Merge branch 'master' into for-next

Sync with Linus tree to have 157550ff ("mtd: add GPMI-NAND driver
in the config and Makefile") as I have patch depending on that one.

448 files changed, 15558 insertions, 6379 deletions

diff --git a/net/802/fc.c b/net/802/fc.c
index 1e49f2d4ea96..bd345f3d29f8 100644
--- a/net/802/fc.c
+++ b/net/802/fc.c
@@ -27,6 +27,7 @@
 #include <linux/net.h>
 #include <linux/proc_fs.h>
 #include <linux/init.h>
+#include <linux/export.h>
 #include <net/arp.h>
 
 /*
diff --git a/net/802/garp.c b/net/802/garp.c
index 16102951d36a..8e21b6db3981 100644
--- a/net/802/garp.c
+++ b/net/802/garp.c
@@ -15,6 +15,7 @@
 #include <linux/rtnetlink.h>
 #include <linux/llc.h>
 #include <linux/slab.h>
+#include <linux/module.h>
 #include <net/llc.h>
 #include <net/llc_pdu.h>
 #include <net/garp.h>
@@ -553,7 +554,7 @@ static void garp_release_port(struct net_device *dev)
                 if (rtnl_dereference(port->applicants[i]))
                         return;
         }
-        rcu_assign_pointer(dev->garp_port, NULL);
+        RCU_INIT_POINTER(dev->garp_port, NULL);
         kfree_rcu(port, rcu);
 }
 
@@ -605,7 +606,7 @@ void garp_uninit_applicant(struct net_device *dev, struct garp_application *appl
 
         ASSERT_RTNL();
 
-        rcu_assign_pointer(port->applicants[appl->type], NULL);
+        RCU_INIT_POINTER(port->applicants[appl->type], NULL);
 
         /* Delete timer and generate a final TRANSMIT_PDU event to flush out
          * all pending messages before the applicant is gone. */
diff --git a/net/802/stp.c b/net/802/stp.c
index 978c30b1b36b..15540b7323cd 100644
--- a/net/802/stp.c
+++ b/net/802/stp.c
@@ -12,6 +12,7 @@
 #include <linux/etherdevice.h>
 #include <linux/llc.h>
 #include <linux/slab.h>
+#include <linux/module.h>
 #include <net/llc.h>
 #include <net/llc_pdu.h>
 #include <net/stp.h>
@@ -88,9 +89,9 @@ void stp_proto_unregister(const struct stp_proto *proto)
 {
         mutex_lock(&stp_proto_mutex);
         if (is_zero_ether_addr(proto->group_address))
-                rcu_assign_pointer(stp_proto, NULL);
+                RCU_INIT_POINTER(stp_proto, NULL);
         else
-                rcu_assign_pointer(garp_protos[proto->group_address[5] -
+                RCU_INIT_POINTER(garp_protos[proto->group_address[5] -
                                                GARP_ADDR_MIN], NULL);
         synchronize_rcu();
 
diff --git a/net/8021q/vlan.c b/net/8021q/vlan.c
index 8970ba139d73..5471628d3ffe 100644
--- a/net/8021q/vlan.c
+++ b/net/8021q/vlan.c
@@ -133,7 +133,7 @@ void unregister_vlan_dev(struct net_device *dev, struct list_head *head)
         if (grp->nr_vlans == 0) {
                 vlan_gvrp_uninit_applicant(real_dev);
 
-                rcu_assign_pointer(real_dev->vlgrp, NULL);
+                RCU_INIT_POINTER(real_dev->vlgrp, NULL);
 
                 /* Free the group, after all cpu's are done. */
                 call_rcu(&grp->rcu, vlan_rcu_free);
diff --git a/net/8021q/vlan_core.c b/net/8021q/vlan_core.c
index f1f2f7bb6661..f5ffc02729d6 100644
--- a/net/8021q/vlan_core.c
+++ b/net/8021q/vlan_core.c
@@ -2,9 +2,10 @@
 #include <linux/netdevice.h>
 #include <linux/if_vlan.h>
 #include <linux/netpoll.h>
+#include <linux/export.h>
 #include "vlan.h"
 
-bool vlan_do_receive(struct sk_buff **skbp)
+bool vlan_do_receive(struct sk_buff **skbp, bool last_handler)
 {
         struct sk_buff *skb = *skbp;
         u16 vlan_id = skb->vlan_tci & VLAN_VID_MASK;
@@ -13,7 +14,10 @@ bool vlan_do_receive(struct sk_buff **skbp)
 
         vlan_dev = vlan_find_dev(skb->dev, vlan_id);
         if (!vlan_dev) {
-                if (vlan_id)
+                /* Only the last call to vlan_do_receive() should change
+                 * pkt_type to PACKET_OTHERHOST
+                 */
+                if (vlan_id && last_handler)
                         skb->pkt_type = PACKET_OTHERHOST;
                 return false;
         }
diff --git a/net/8021q/vlan_dev.c b/net/8021q/vlan_dev.c
index 9d40a071d038..bc2528624583 100644
--- a/net/8021q/vlan_dev.c
+++ b/net/8021q/vlan_dev.c
@@ -470,10 +470,12 @@ static void vlan_dev_change_rx_flags(struct net_device *dev, int change)
 {
         struct net_device *real_dev = vlan_dev_info(dev)->real_dev;
 
-        if (change & IFF_ALLMULTI)
-                dev_set_allmulti(real_dev, dev->flags & IFF_ALLMULTI ? 1 : -1);
-        if (change & IFF_PROMISC)
-                dev_set_promiscuity(real_dev, dev->flags & IFF_PROMISC ? 1 : -1);
+        if (dev->flags & IFF_UP) {
+                if (change & IFF_ALLMULTI)
+                        dev_set_allmulti(real_dev, dev->flags & IFF_ALLMULTI ? 1 : -1);
+                if (change & IFF_PROMISC)
+                        dev_set_promiscuity(real_dev, dev->flags & IFF_PROMISC ? 1 : -1);
+        }
 }
 
 static void vlan_dev_set_rx_mode(struct net_device *vlan_dev)
@@ -610,7 +612,8 @@ static int vlan_ethtool_get_settings(struct net_device *dev,
                                      struct ethtool_cmd *cmd)
 {
         const struct vlan_dev_info *vlan = vlan_dev_info(dev);
-        return dev_ethtool_get_settings(vlan->real_dev, cmd);
+
+        return __ethtool_get_settings(vlan->real_dev, cmd);
 }
 
 static void vlan_ethtool_get_drvinfo(struct net_device *dev,
@@ -674,7 +677,6 @@ static const struct net_device_ops vlan_netdev_ops = {
         .ndo_validate_addr      = eth_validate_addr,
         .ndo_set_mac_address    = vlan_dev_set_mac_address,
         .ndo_set_rx_mode        = vlan_dev_set_rx_mode,
-        .ndo_set_multicast_list = vlan_dev_set_rx_mode,
         .ndo_change_rx_flags    = vlan_dev_change_rx_flags,
         .ndo_do_ioctl           = vlan_dev_ioctl,
         .ndo_neigh_setup        = vlan_dev_neigh_setup,
diff --git a/net/8021q/vlan_netlink.c b/net/8021q/vlan_netlink.c
index be9a5c19a775..235c2197dbb6 100644
--- a/net/8021q/vlan_netlink.c
+++ b/net/8021q/vlan_netlink.c
@@ -11,6 +11,7 @@
 #include <linux/kernel.h>
 #include <linux/netdevice.h>
 #include <linux/if_vlan.h>
+#include <linux/module.h>
 #include <net/net_namespace.h>
 #include <net/netlink.h>
 #include <net/rtnetlink.h>
diff --git a/net/9p/client.c b/net/9p/client.c
index 0505a03c374c..854ca7a911c4 100644
--- a/net/9p/client.c
+++ b/net/9p/client.c
@@ -38,6 +38,9 @@
 #include <net/9p/transport.h>
 #include "protocol.h"
 
+#define CREATE_TRACE_POINTS
+#include <trace/events/9p.h>
+
 /*
   * Client Option Parsing (code inspired by NFS code)
   *  - a little lazy - parse all client options
@@ -123,21 +126,19 @@ static int parse_opts(char *opts, struct p9_client *clnt)
         options = tmp_options;
 
         while ((p = strsep(&options, ",")) != NULL) {
-                int token;
+                int token, r;
                 if (!*p)
                         continue;
                 token = match_token(p, tokens, args);
-                if (token < Opt_trans) {
-                        int r = match_int(&args[0], &option);
+                switch (token) {
+                case Opt_msize:
+                        r = match_int(&args[0], &option);
                         if (r < 0) {
                                 P9_DPRINTK(P9_DEBUG_ERROR,
-                                        "integer field, but no integer?\n");
+                                           "integer field, but no integer?\n");
                                 ret = r;
                                 continue;
                         }
-                }
-                switch (token) {
-                case Opt_msize:
                         clnt->msize = option;
                         break;
                 case Opt_trans:
@@ -203,11 +204,13 @@ free_and_return:
  *
  */
 
-static struct p9_req_t *p9_tag_alloc(struct p9_client *c, u16 tag)
+static struct p9_req_t *
+p9_tag_alloc(struct p9_client *c, u16 tag, unsigned int max_size)
 {
         unsigned long flags;
         int row, col;
         struct p9_req_t *req;
+        int alloc_msize = min(c->msize, max_size);
 
         /* This looks up the original request by tag so we know which
          * buffer to read the data into */
@@ -245,23 +248,10 @@ static struct p9_req_t *p9_tag_alloc(struct p9_client *c, u16 tag)
                         return ERR_PTR(-ENOMEM);
                 }
                 init_waitqueue_head(req->wq);
-                if ((c->trans_mod->pref & P9_TRANS_PREF_PAYLOAD_MASK) ==
-                                P9_TRANS_PREF_PAYLOAD_SEP) {
-                        int alloc_msize = min(c->msize, 4096);
-                        req->tc = kmalloc(sizeof(struct p9_fcall)+alloc_msize,
-                                          GFP_NOFS);
-                        req->tc->capacity = alloc_msize;
-                        req->rc = kmalloc(sizeof(struct p9_fcall)+alloc_msize,
-                                          GFP_NOFS);
-                        req->rc->capacity = alloc_msize;
-                } else {
-                        req->tc = kmalloc(sizeof(struct p9_fcall)+c->msize,
-                                          GFP_NOFS);
-                        req->tc->capacity = c->msize;
-                        req->rc = kmalloc(sizeof(struct p9_fcall)+c->msize,
-                                          GFP_NOFS);
-                        req->rc->capacity = c->msize;
-                }
+                req->tc = kmalloc(sizeof(struct p9_fcall) + alloc_msize,
+                                  GFP_NOFS);
+                req->rc = kmalloc(sizeof(struct p9_fcall) + alloc_msize,
+                                  GFP_NOFS);
                 if ((!req->tc) || (!req->rc)) {
                         printk(KERN_ERR "Couldn't grow tag array\n");
                         kfree(req->tc);
@@ -271,6 +261,8 @@ static struct p9_req_t *p9_tag_alloc(struct p9_client *c, u16 tag)
                         req->wq = NULL;
                         return ERR_PTR(-ENOMEM);
                 }
+                req->tc->capacity = alloc_msize;
+                req->rc->capacity = alloc_msize;
                 req->tc->sdata = (char *) req->tc + sizeof(struct p9_fcall);
                 req->rc->sdata = (char *) req->rc + sizeof(struct p9_fcall);
         }
@@ -475,37 +467,22 @@ static int p9_check_errors(struct p9_client *c, struct p9_req_t *req)
         int ecode;
 
         err = p9_parse_header(req->rc, NULL, &type, NULL, 0);
+        /*
+         * dump the response from server
+         * This should be after check errors which poplulate pdu_fcall.
+         */
+        trace_9p_protocol_dump(c, req->rc);
         if (err) {
                 P9_DPRINTK(P9_DEBUG_ERROR, "couldn't parse header %d\n", err);
                 return err;
         }
-
         if (type != P9_RERROR && type != P9_RLERROR)
                 return 0;
 
         if (!p9_is_proto_dotl(c)) {
                 char *ename;
-
-                if (req->tc->pbuf_size) {
-                        /* Handle user buffers */
-                        size_t len = req->rc->size - req->rc->offset;
-                        if (req->tc->pubuf) {
-                                /* User Buffer */
-                                err = copy_from_user(
-                                        &req->rc->sdata[req->rc->offset],
-                                        req->tc->pubuf, len);
-                                if (err) {
-                                        err = -EFAULT;
-                                        goto out_err;
-                                }
-                        } else {
-                                /* Kernel Buffer */
-                                memmove(&req->rc->sdata[req->rc->offset],
-                                                req->tc->pkbuf, len);
-                        }
-                }
                 err = p9pdu_readf(req->rc, c->proto_version, "s?d",
-                                &ename, &ecode);
+                                  &ename, &ecode);
                 if (err)
                         goto out_err;
 
@@ -515,11 +492,10 @@ static int p9_check_errors(struct p9_client *c, struct p9_req_t *req)
                 if (!err || !IS_ERR_VALUE(err)) {
                         err = p9_errstr2errno(ename, strlen(ename));
 
-                        P9_DPRINTK(P9_DEBUG_9P, "<<< RERROR (%d) %s\n", -ecode,
-                                        ename);
-
-                        kfree(ename);
+                        P9_DPRINTK(P9_DEBUG_9P, "<<< RERROR (%d) %s\n",
+                                   -ecode, ename);
                 }
+                kfree(ename);
         } else {
                 err = p9pdu_readf(req->rc, c->proto_version, "d", &ecode);
                 err = -ecode;
@@ -527,7 +503,6 @@ static int p9_check_errors(struct p9_client *c, struct p9_req_t *req)
                 P9_DPRINTK(P9_DEBUG_9P, "<<< RLERROR (%d)\n", -ecode);
         }
 
-
         return err;
 
 out_err:
@@ -536,6 +511,115 @@ out_err:
         return err;
 }
 
+/**
+ * p9_check_zc_errors - check 9p packet for error return and process it
+ * @c: current client instance
+ * @req: request to parse and check for error conditions
+ * @in_hdrlen: Size of response protocol buffer.
+ *
+ * returns error code if one is discovered, otherwise returns 0
+ *
+ * this will have to be more complicated if we have multiple
+ * error packet types
+ */
+
+static int p9_check_zc_errors(struct p9_client *c, struct p9_req_t *req,
+                              char *uidata, int in_hdrlen, int kern_buf)
+{
+        int err;
+        int ecode;
+        int8_t type;
+        char *ename = NULL;
+
+        err = p9_parse_header(req->rc, NULL, &type, NULL, 0);
+        /*
+         * dump the response from server
+         * This should be after parse_header which poplulate pdu_fcall.
+         */
+        trace_9p_protocol_dump(c, req->rc);
+        if (err) {
+                P9_DPRINTK(P9_DEBUG_ERROR, "couldn't parse header %d\n", err);
+                return err;
+        }
+
+        if (type != P9_RERROR && type != P9_RLERROR)
+                return 0;
+
+        if (!p9_is_proto_dotl(c)) {
+                /* Error is reported in string format */
+                uint16_t len;
+                /* 7 = header size for RERROR, 2 is the size of string len; */
+                int inline_len = in_hdrlen - (7 + 2);
+
+                /* Read the size of error string */
+                err = p9pdu_readf(req->rc, c->proto_version, "w", &len);
+                if (err)
+                        goto out_err;
+
+                ename = kmalloc(len + 1, GFP_NOFS);
+                if (!ename) {
+                        err = -ENOMEM;
+                        goto out_err;
+                }
+                if (len <= inline_len) {
+                        /* We have error in protocol buffer itself */
+                        if (pdu_read(req->rc, ename, len)) {
+                                err = -EFAULT;
+                                goto out_free;
+
+                        }
+                } else {
+                        /*
+                         *  Part of the data is in user space buffer.
+                         */
+                        if (pdu_read(req->rc, ename, inline_len)) {
+                                err = -EFAULT;
+                                goto out_free;
+
+                        }
+                        if (kern_buf) {
+                                memcpy(ename + inline_len, uidata,
+                                       len - inline_len);
+                        } else {
+                                err = copy_from_user(ename + inline_len,
+                                                     uidata, len - inline_len);
+                                if (err) {
+                                        err = -EFAULT;
+                                        goto out_free;
+                                }
+                        }
+                }
+                ename[len] = 0;
+                if (p9_is_proto_dotu(c)) {
+                        /* For dotu we also have error code */
+                        err = p9pdu_readf(req->rc,
+                                          c->proto_version, "d", &ecode);
+                        if (err)
+                                goto out_free;
+                        err = -ecode;
+                }
+                if (!err || !IS_ERR_VALUE(err)) {
+                        err = p9_errstr2errno(ename, strlen(ename));
+
+                        P9_DPRINTK(P9_DEBUG_9P, "<<< RERROR (%d) %s\n",
+                                   -ecode, ename);
+                }
+                kfree(ename);
+        } else {
+                err = p9pdu_readf(req->rc, c->proto_version, "d", &ecode);
+                err = -ecode;
+
+                P9_DPRINTK(P9_DEBUG_9P, "<<< RLERROR (%d)\n", -ecode);
+        }
+        return err;
+
+out_free:
+        kfree(ename);
+out_err:
+        P9_DPRINTK(P9_DEBUG_ERROR, "couldn't parse error%d\n", err);
+        return err;
+}
+
 static struct p9_req_t *
 p9_client_rpc(struct p9_client *c, int8_t type, const char *fmt, ...);
 
@@ -579,23 +663,12 @@ static int p9_client_flush(struct p9_client *c, struct p9_req_t *oldreq)
         return 0;
 }
 
-/**
- * p9_client_rpc - issue a request and wait for a response
- * @c: client session
- * @type: type of request
- * @fmt: protocol format string (see protocol.c)
- *
- * Returns request structure (which client must free using p9_free_req)
- */
-
-static struct p9_req_t *
-p9_client_rpc(struct p9_client *c, int8_t type, const char *fmt, ...)
+static struct p9_req_t *p9_client_prepare_req(struct p9_client *c,
+                                              int8_t type, int req_size,
+                                              const char *fmt, va_list ap)
 {
-        va_list ap;
         int tag, err;
         struct p9_req_t *req;
-        unsigned long flags;
-        int sigpending;
 
         P9_DPRINTK(P9_DEBUG_MUX, "client %p op %d\n", c, type);
 
@@ -607,12 +680,6 @@ p9_client_rpc(struct p9_client *c, int8_t type, const char *fmt, ...)
         if ((c->status == BeginDisconnect) && (type != P9_TCLUNK))
                 return ERR_PTR(-EIO);
 
-        if (signal_pending(current)) {
-                sigpending = 1;
-                clear_thread_flag(TIF_SIGPENDING);
-        } else
-                sigpending = 0;
-
         tag = P9_NOTAG;
         if (type != P9_TVERSION) {
                 tag = p9_idpool_get(c->tagpool);
@@ -620,18 +687,51 @@ p9_client_rpc(struct p9_client *c, int8_t type, const char *fmt, ...)
                         return ERR_PTR(-ENOMEM);
         }
 
-        req = p9_tag_alloc(c, tag);
+        req = p9_tag_alloc(c, tag, req_size);
         if (IS_ERR(req))
                 return req;
 
         /* marshall the data */
         p9pdu_prepare(req->tc, tag, type);
-        va_start(ap, fmt);
         err = p9pdu_vwritef(req->tc, c->proto_version, fmt, ap);
-        va_end(ap);
         if (err)
                 goto reterr;
-        p9pdu_finalize(req->tc);
+        p9pdu_finalize(c, req->tc);
+        trace_9p_client_req(c, type, tag);
+        return req;
+reterr:
+        p9_free_req(c, req);
+        return ERR_PTR(err);
+}
+
+/**
+ * p9_client_rpc - issue a request and wait for a response
+ * @c: client session
+ * @type: type of request
+ * @fmt: protocol format string (see protocol.c)
+ *
+ * Returns request structure (which client must free using p9_free_req)
+ */
+
+static struct p9_req_t *
+p9_client_rpc(struct p9_client *c, int8_t type, const char *fmt, ...)
+{
+        va_list ap;
+        int sigpending, err;
+        unsigned long flags;
+        struct p9_req_t *req;
+
+        va_start(ap, fmt);
+        req = p9_client_prepare_req(c, type, c->msize, fmt, ap);
+        va_end(ap);
+        if (IS_ERR(req))
+                return req;
+
+        if (signal_pending(current)) {
+                sigpending = 1;
+                clear_thread_flag(TIF_SIGPENDING);
+        } else
+                sigpending = 0;
 
         err = c->trans_mod->request(c, req);
         if (err < 0) {
@@ -639,18 +739,14 @@ p9_client_rpc(struct p9_client *c, int8_t type, const char *fmt, ...)
                         c->status = Disconnected;
                 goto reterr;
         }
-
-        P9_DPRINTK(P9_DEBUG_MUX, "wait %p tag: %d\n", req->wq, tag);
+        /* Wait for the response */
         err = wait_event_interruptible(*req->wq,
-                                                req->status >= REQ_STATUS_RCVD);
-        P9_DPRINTK(P9_DEBUG_MUX, "wait %p tag: %d returned %d\n",
-                                                req->wq, tag, err);
+                                       req->status >= REQ_STATUS_RCVD);
 
         if (req->status == REQ_STATUS_ERROR) {
                 P9_DPRINTK(P9_DEBUG_ERROR, "req_status error %d\n", req->t_err);
                 err = req->t_err;
         }
-
         if ((err == -ERESTARTSYS) && (c->status == Connected)) {
                 P9_DPRINTK(P9_DEBUG_MUX, "flushing\n");
                 sigpending = 1;
@@ -663,25 +759,102 @@ p9_client_rpc(struct p9_client *c, int8_t type, const char *fmt, ...)
                 if (req->status == REQ_STATUS_RCVD)
                         err = 0;
         }
-
         if (sigpending) {
                 spin_lock_irqsave(&current->sighand->siglock, flags);
                 recalc_sigpending();
                 spin_unlock_irqrestore(&current->sighand->siglock, flags);
         }
-
         if (err < 0)
                 goto reterr;
 
         err = p9_check_errors(c, req);
-        if (!err) {
-                P9_DPRINTK(P9_DEBUG_MUX, "exit: client %p op %d\n", c, type);
+        trace_9p_client_res(c, type, req->rc->tag, err);
+        if (!err)
+                return req;
+reterr:
+        p9_free_req(c, req);
+        return ERR_PTR(err);
+}
+
+/**
+ * p9_client_zc_rpc - issue a request and wait for a response
+ * @c: client session
+ * @type: type of request
+ * @uidata: user bffer that should be ued for zero copy read
+ * @uodata: user buffer that shoud be user for zero copy write
+ * @inlen: read buffer size
+ * @olen: write buffer size
+ * @hdrlen: reader header size, This is the size of response protocol data
+ * @fmt: protocol format string (see protocol.c)
+ *
+ * Returns request structure (which client must free using p9_free_req)
+ */
+static struct p9_req_t *p9_client_zc_rpc(struct p9_client *c, int8_t type,
+                                         char *uidata, char *uodata,
+                                         int inlen, int olen, int in_hdrlen,
+                                         int kern_buf, const char *fmt, ...)
+{
+        va_list ap;
+        int sigpending, err;
+        unsigned long flags;
+        struct p9_req_t *req;
+
+        va_start(ap, fmt);
+        /*
+         * We allocate a inline protocol data of only 4k bytes.
+         * The actual content is passed in zero-copy fashion.
+         */
+        req = p9_client_prepare_req(c, type, P9_ZC_HDR_SZ, fmt, ap);
+        va_end(ap);
+        if (IS_ERR(req))
                 return req;
+
+        if (signal_pending(current)) {
+                sigpending = 1;
+                clear_thread_flag(TIF_SIGPENDING);
+        } else
+                sigpending = 0;
+
+        /* If we are called with KERNEL_DS force kern_buf */
+        if (segment_eq(get_fs(), KERNEL_DS))
+                kern_buf = 1;
+
+        err = c->trans_mod->zc_request(c, req, uidata, uodata,
+                                       inlen, olen, in_hdrlen, kern_buf);
+        if (err < 0) {
+                if (err == -EIO)
+                        c->status = Disconnected;
+                goto reterr;
+        }
+        if (req->status == REQ_STATUS_ERROR) {
+                P9_DPRINTK(P9_DEBUG_ERROR, "req_status error %d\n", req->t_err);
+                err = req->t_err;
+        }
+        if ((err == -ERESTARTSYS) && (c->status == Connected)) {
+                P9_DPRINTK(P9_DEBUG_MUX, "flushing\n");
+                sigpending = 1;
+                clear_thread_flag(TIF_SIGPENDING);
+
+                if (c->trans_mod->cancel(c, req))
+                        p9_client_flush(c, req);
+
+                /* if we received the response anyway, don't signal error */
+                if (req->status == REQ_STATUS_RCVD)
+                        err = 0;
+        }
+        if (sigpending) {
+                spin_lock_irqsave(&current->sighand->siglock, flags);
+                recalc_sigpending();
+                spin_unlock_irqrestore(&current->sighand->siglock, flags);
         }
+        if (err < 0)
+                goto reterr;
 
+        err = p9_check_zc_errors(c, req, uidata, in_hdrlen, kern_buf);
+        trace_9p_client_res(c, type, req->rc->tag, err);
+        if (!err)
+                return req;
 reterr:
-        P9_DPRINTK(P9_DEBUG_MUX, "exit: client %p op %d error: %d\n", c, type,
-                                                                        err);
         p9_free_req(c, req);
         return ERR_PTR(err);
 }
@@ -769,7 +942,7 @@ static int p9_client_version(struct p9_client *c)
         err = p9pdu_readf(req->rc, c->proto_version, "ds", &msize, &version);
         if (err) {
                 P9_DPRINTK(P9_DEBUG_9P, "version error %d\n", err);
-                P9_DUMP_PKT(1, req->rc);
+                trace_9p_protocol_dump(c, req->rc);
                 goto error;
         }
 
@@ -906,15 +1079,14 @@ EXPORT_SYMBOL(p9_client_begin_disconnect);
 struct p9_fid *p9_client_attach(struct p9_client *clnt, struct p9_fid *afid,
         char *uname, u32 n_uname, char *aname)
 {
-        int err;
+        int err = 0;
         struct p9_req_t *req;
         struct p9_fid *fid;
         struct p9_qid qid;
 
-        P9_DPRINTK(P9_DEBUG_9P, ">>> TATTACH afid %d uname %s aname %s\n",
-                                        afid ? afid->fid : -1, uname, aname);
-        err = 0;
 
+        P9_DPRINTK(P9_DEBUG_9P, ">>> TATTACH afid %d uname %s aname %s\n",
+                   afid ? afid->fid : -1, uname, aname);
         fid = p9_fid_create(clnt);
         if (IS_ERR(fid)) {
                 err = PTR_ERR(fid);
@@ -931,7 +1103,7 @@ struct p9_fid *p9_client_attach(struct p9_client *clnt, struct p9_fid *afid,
 
         err = p9pdu_readf(req->rc, clnt->proto_version, "Q", &qid);
         if (err) {
-                P9_DUMP_PKT(1, req->rc);
+                trace_9p_protocol_dump(clnt, req->rc);
                 p9_free_req(clnt, req);
                 goto error;
         }
@@ -991,7 +1163,7 @@ struct p9_fid *p9_client_walk(struct p9_fid *oldfid, uint16_t nwname,
 
         err = p9pdu_readf(req->rc, clnt->proto_version, "R", &nwqids, &wqids);
         if (err) {
-                P9_DUMP_PKT(1, req->rc);
+                trace_9p_protocol_dump(clnt, req->rc);
                 p9_free_req(clnt, req);
                 goto clunk_fid;
         }
@@ -1058,7 +1230,7 @@ int p9_client_open(struct p9_fid *fid, int mode)
 
         err = p9pdu_readf(req->rc, clnt->proto_version, "Qd", &qid, &iounit);
         if (err) {
-                P9_DUMP_PKT(1, req->rc);
+                trace_9p_protocol_dump(clnt, req->rc);
                 goto free_and_error;
         }
 
@@ -1101,7 +1273,7 @@ int p9_client_create_dotl(struct p9_fid *ofid, char *name, u32 flags, u32 mode,
 
         err = p9pdu_readf(req->rc, clnt->proto_version, "Qd", qid, &iounit);
         if (err) {
-                P9_DUMP_PKT(1, req->rc);
+                trace_9p_protocol_dump(clnt, req->rc);
                 goto free_and_error;
         }
 
@@ -1146,7 +1318,7 @@ int p9_client_fcreate(struct p9_fid *fid, char *name, u32 perm, int mode,
 
         err = p9pdu_readf(req->rc, clnt->proto_version, "Qd", &qid, &iounit);
         if (err) {
-                P9_DUMP_PKT(1, req->rc);
+                trace_9p_protocol_dump(clnt, req->rc);
                 goto free_and_error;
         }
 
@@ -1185,7 +1357,7 @@ int p9_client_symlink(struct p9_fid *dfid, char *name, char *symtgt, gid_t gid,
 
         err = p9pdu_readf(req->rc, clnt->proto_version, "Q", qid);
         if (err) {
-                P9_DUMP_PKT(1, req->rc);
+                trace_9p_protocol_dump(clnt, req->rc);
                 goto free_and_error;
         }
 
@@ -1330,13 +1502,15 @@ int
 p9_client_read(struct p9_fid *fid, char *data, char __user *udata, u64 offset,
                                                                 u32 count)
 {
-        int err, rsize;
-        struct p9_client *clnt;
-        struct p9_req_t *req;
         char *dataptr;
+        int kernel_buf = 0;
+        struct p9_req_t *req;
+        struct p9_client *clnt;
+        int err, rsize, non_zc = 0;
+
 
-        P9_DPRINTK(P9_DEBUG_9P, ">>> TREAD fid %d offset %llu %d\n", fid->fid,
-                                        (long long unsigned) offset, count);
+        P9_DPRINTK(P9_DEBUG_9P, ">>> TREAD fid %d offset %llu %d\n",
+                   fid->fid, (long long unsigned) offset, count);
         err = 0;
         clnt = fid->clnt;
 
@@ -1348,13 +1522,24 @@ p9_client_read(struct p9_fid *fid, char *data, char __user *udata, u64 offset,
                 rsize = count;
 
         /* Don't bother zerocopy for small IO (< 1024) */
-        if (((clnt->trans_mod->pref & P9_TRANS_PREF_PAYLOAD_MASK) ==
-                        P9_TRANS_PREF_PAYLOAD_SEP) && (rsize > 1024)) {
-                req = p9_client_rpc(clnt, P9_TREAD, "dqE", fid->fid, offset,
-                                rsize, data, udata);
+        if (clnt->trans_mod->zc_request && rsize > 1024) {
+                char *indata;
+                if (data) {
+                        kernel_buf = 1;
+                        indata = data;
+                } else
+                        indata = (char *)udata;
+                /*
+                 * response header len is 11
+                 * PDU Header(7) + IO Size (4)
+                 */
+                req = p9_client_zc_rpc(clnt, P9_TREAD, indata, NULL, rsize, 0,
+                                       11, kernel_buf, "dqd", fid->fid,
+                                       offset, rsize);
         } else {
+                non_zc = 1;
                 req = p9_client_rpc(clnt, P9_TREAD, "dqd", fid->fid, offset,
-                                rsize);
+                                    rsize);
         }
         if (IS_ERR(req)) {
                 err = PTR_ERR(req);
@@ -1363,14 +1548,13 @@ p9_client_read(struct p9_fid *fid, char *data, char __user *udata, u64 offset,
 
         err = p9pdu_readf(req->rc, clnt->proto_version, "D", &count, &dataptr);
         if (err) {
-                P9_DUMP_PKT(1, req->rc);
+                trace_9p_protocol_dump(clnt, req->rc);
                 goto free_and_error;
         }
 
         P9_DPRINTK(P9_DEBUG_9P, "<<< RREAD count %d\n", count);
-        P9_DUMP_PKT(1, req->rc);
 
-        if (!req->tc->pbuf_size) {
+        if (non_zc) {
                 if (data) {
                         memmove(data, dataptr, count);
                 } else {
@@ -1396,6 +1580,7 @@ p9_client_write(struct p9_fid *fid, char *data, const char __user *udata,
                                                         u64 offset, u32 count)
 {
         int err, rsize;
+        int kernel_buf = 0;
         struct p9_client *clnt;
         struct p9_req_t *req;
 
@@ -1411,19 +1596,24 @@ p9_client_write(struct p9_fid *fid, char *data, const char __user *udata,
         if (count < rsize)
                 rsize = count;
 
-        /* Don't bother zerocopy form small IO (< 1024) */
-        if (((clnt->trans_mod->pref & P9_TRANS_PREF_PAYLOAD_MASK) ==
-                                P9_TRANS_PREF_PAYLOAD_SEP) && (rsize > 1024)) {
-                req = p9_client_rpc(clnt, P9_TWRITE, "dqE", fid->fid, offset,
-                                rsize, data, udata);
+        /* Don't bother zerocopy for small IO (< 1024) */
+        if (clnt->trans_mod->zc_request && rsize > 1024) {
+                char *odata;
+                if (data) {
+                        kernel_buf = 1;
+                        odata = data;
+                } else
+                        odata = (char *)udata;
+                req = p9_client_zc_rpc(clnt, P9_TWRITE, NULL, odata, 0, rsize,
+                                       P9_ZC_HDR_SZ, kernel_buf, "dqd",
+                                       fid->fid, offset, rsize);
         } else {
-
                 if (data)
                         req = p9_client_rpc(clnt, P9_TWRITE, "dqD", fid->fid,
-                                        offset, rsize, data);
+                                            offset, rsize, data);
                 else
                         req = p9_client_rpc(clnt, P9_TWRITE, "dqU", fid->fid,
-                                        offset, rsize, udata);
+                                            offset, rsize, udata);
         }
         if (IS_ERR(req)) {
                 err = PTR_ERR(req);
@@ -1432,7 +1622,7 @@ p9_client_write(struct p9_fid *fid, char *data, const char __user *udata,
 
         err = p9pdu_readf(req->rc, clnt->proto_version, "d", &count);
         if (err) {
-                P9_DUMP_PKT(1, req->rc);
+                trace_9p_protocol_dump(clnt, req->rc);
                 goto free_and_error;
         }
 
@@ -1472,7 +1662,7 @@ struct p9_wstat *p9_client_stat(struct p9_fid *fid)
 
         err = p9pdu_readf(req->rc, clnt->proto_version, "wS", &ignored, ret);
         if (err) {
-                P9_DUMP_PKT(1, req->rc);
+                trace_9p_protocol_dump(clnt, req->rc);
                 p9_free_req(clnt, req);
                 goto error;
         }
@@ -1523,7 +1713,7 @@ struct p9_stat_dotl *p9_client_getattr_dotl(struct p9_fid *fid,
 
         err = p9pdu_readf(req->rc, clnt->proto_version, "A", ret);
         if (err) {
-                P9_DUMP_PKT(1, req->rc);
+                trace_9p_protocol_dump(clnt, req->rc);
                 p9_free_req(clnt, req);
                 goto error;
         }
@@ -1671,7 +1861,7 @@ int p9_client_statfs(struct p9_fid *fid, struct p9_rstatfs *sb)
                 &sb->bsize, &sb->blocks, &sb->bfree, &sb->bavail,
                 &sb->files, &sb->ffree, &sb->fsid, &sb->namelen);
         if (err) {
-                P9_DUMP_PKT(1, req->rc);
+                trace_9p_protocol_dump(clnt, req->rc);
                 p9_free_req(clnt, req);
                 goto error;
         }
@@ -1778,7 +1968,7 @@ struct p9_fid *p9_client_xattrwalk(struct p9_fid *file_fid,
         }
         err = p9pdu_readf(req->rc, clnt->proto_version, "q", attr_size);
         if (err) {
-                P9_DUMP_PKT(1, req->rc);
+                trace_9p_protocol_dump(clnt, req->rc);
                 p9_free_req(clnt, req);
                 goto clunk_fid;
         }
@@ -1824,7 +2014,7 @@ EXPORT_SYMBOL_GPL(p9_client_xattrcreate);
 
 int p9_client_readdir(struct p9_fid *fid, char *data, u32 count, u64 offset)
 {
-        int err, rsize;
+        int err, rsize, non_zc = 0;
         struct p9_client *clnt;
         struct p9_req_t *req;
         char *dataptr;
@@ -1842,13 +2032,18 @@ int p9_client_readdir(struct p9_fid *fid, char *data, u32 count, u64 offset)
         if (count < rsize)
                 rsize = count;
 
-        if ((clnt->trans_mod->pref & P9_TRANS_PREF_PAYLOAD_MASK) ==
-                        P9_TRANS_PREF_PAYLOAD_SEP) {
-                req = p9_client_rpc(clnt, P9_TREADDIR, "dqF", fid->fid,
-                                offset, rsize, data);
+        /* Don't bother zerocopy for small IO (< 1024) */
+        if (clnt->trans_mod->zc_request && rsize > 1024) {
+                /*
+                 * response header len is 11
+                 * PDU Header(7) + IO Size (4)
+                 */
+                req = p9_client_zc_rpc(clnt, P9_TREADDIR, data, NULL, rsize, 0,
+                                       11, 1, "dqd", fid->fid, offset, rsize);
         } else {
+                non_zc = 1;
                 req = p9_client_rpc(clnt, P9_TREADDIR, "dqd", fid->fid,
-                                offset, rsize);
+                                    offset, rsize);
         }
         if (IS_ERR(req)) {
                 err = PTR_ERR(req);
@@ -1857,13 +2052,13 @@ int p9_client_readdir(struct p9_fid *fid, char *data, u32 count, u64 offset)
 
         err = p9pdu_readf(req->rc, clnt->proto_version, "D", &count, &dataptr);
         if (err) {
-                P9_DUMP_PKT(1, req->rc);
+                trace_9p_protocol_dump(clnt, req->rc);
                 goto free_and_error;
         }
 
         P9_DPRINTK(P9_DEBUG_9P, "<<< RREADDIR count %d\n", count);
 
-        if (!req->tc->pbuf_size && data)
+        if (non_zc)
                 memmove(data, dataptr, count);
 
         p9_free_req(clnt, req);
@@ -1894,7 +2089,7 @@ int p9_client_mknod_dotl(struct p9_fid *fid, char *name, int mode,
 
         err = p9pdu_readf(req->rc, clnt->proto_version, "Q", qid);
         if (err) {
-                P9_DUMP_PKT(1, req->rc);
+                trace_9p_protocol_dump(clnt, req->rc);
                 goto error;
         }
         P9_DPRINTK(P9_DEBUG_9P, "<<< RMKNOD qid %x.%llx.%x\n", qid->type,
@@ -1925,7 +2120,7 @@ int p9_client_mkdir_dotl(struct p9_fid *fid, char *name, int mode,
 
         err = p9pdu_readf(req->rc, clnt->proto_version, "Q", qid);
         if (err) {
-                P9_DUMP_PKT(1, req->rc);
+                trace_9p_protocol_dump(clnt, req->rc);
                 goto error;
         }
         P9_DPRINTK(P9_DEBUG_9P, "<<< RMKDIR qid %x.%llx.%x\n", qid->type,
@@ -1960,7 +2155,7 @@ int p9_client_lock_dotl(struct p9_fid *fid, struct p9_flock *flock, u8 *status)
 
         err = p9pdu_readf(req->rc, clnt->proto_version, "b", status);
         if (err) {
-                P9_DUMP_PKT(1, req->rc);
+                trace_9p_protocol_dump(clnt, req->rc);
                 goto error;
         }
         P9_DPRINTK(P9_DEBUG_9P, "<<< RLOCK status %i\n", *status);
@@ -1993,7 +2188,7 @@ int p9_client_getlock_dotl(struct p9_fid *fid, struct p9_getlock *glock)
                         &glock->start, &glock->length, &glock->proc_id,
                         &glock->client_id);
         if (err) {
-                P9_DUMP_PKT(1, req->rc);
+                trace_9p_protocol_dump(clnt, req->rc);
                 goto error;
         }
         P9_DPRINTK(P9_DEBUG_9P, "<<< RGETLOCK type %i start %lld length %lld "
@@ -2021,7 +2216,7 @@ int p9_client_readlink(struct p9_fid *fid, char **target)
 
         err = p9pdu_readf(req->rc, clnt->proto_version, "s", target);
         if (err) {
-                P9_DUMP_PKT(1, req->rc);
+                trace_9p_protocol_dump(clnt, req->rc);
                 goto error;
         }
         P9_DPRINTK(P9_DEBUG_9P, "<<< RREADLINK target %s\n", *target);
diff --git a/net/9p/protocol.c b/net/9p/protocol.c
index df58375ea6b3..55e10a96c902 100644
--- a/net/9p/protocol.c
+++ b/net/9p/protocol.c
@@ -37,40 +37,11 @@
 #include <net/9p/client.h>
 #include "protocol.h"
 
+#include <trace/events/9p.h>
+
 static int
 p9pdu_writef(struct p9_fcall *pdu, int proto_version, const char *fmt, ...);
 
-#ifdef CONFIG_NET_9P_DEBUG
-void
-p9pdu_dump(int way, struct p9_fcall *pdu)
-{
-        int len = pdu->size;
-
-        if ((p9_debug_level & P9_DEBUG_VPKT) != P9_DEBUG_VPKT) {
-                if ((p9_debug_level & P9_DEBUG_PKT) == P9_DEBUG_PKT) {
-                        if (len > 32)
-                                len = 32;
-                } else {
-                        /* shouldn't happen */
-                        return;
-                }
-        }
-
-        if (way)
-                print_hex_dump_bytes("[9P] ", DUMP_PREFIX_OFFSET, pdu->sdata,
-                                                                        len);
-        else
-                print_hex_dump_bytes("]9P[ ", DUMP_PREFIX_OFFSET, pdu->sdata,
-                                                                        len);
-}
-#else
-void
-p9pdu_dump(int way, struct p9_fcall *pdu)
-{
-}
-#endif
-EXPORT_SYMBOL(p9pdu_dump);
-
 void p9stat_free(struct p9_wstat *stbuf)
 {
         kfree(stbuf->name);
@@ -81,7 +52,7 @@ void p9stat_free(struct p9_wstat *stbuf)
 }
 EXPORT_SYMBOL(p9stat_free);
 
-static size_t pdu_read(struct p9_fcall *pdu, void *data, size_t size)
+size_t pdu_read(struct p9_fcall *pdu, void *data, size_t size)
 {
         size_t len = min(pdu->size - pdu->offset, size);
         memcpy(data, &pdu->sdata[pdu->offset], len);
@@ -108,26 +79,6 @@ pdu_write_u(struct p9_fcall *pdu, const char __user *udata, size_t size)
         return size - len;
 }
 
-static size_t
-pdu_write_urw(struct p9_fcall *pdu, const char *kdata, const char __user *udata,
-                size_t size)
-{
-        BUG_ON(pdu->size > P9_IOHDRSZ);
-        pdu->pubuf = (char __user *)udata;
-        pdu->pkbuf = (char *)kdata;
-        pdu->pbuf_size = size;
-        return 0;
-}
-
-static size_t
-pdu_write_readdir(struct p9_fcall *pdu, const char *kdata, size_t size)
-{
-        BUG_ON(pdu->size > P9_READDIRHDRSZ);
-        pdu->pkbuf = (char *)kdata;
-        pdu->pbuf_size = size;
-        return 0;
-}
-
 /*
         b - int8_t
         w - int16_t
@@ -459,26 +410,6 @@ p9pdu_vwritef(struct p9_fcall *pdu, int proto_version, const char *fmt,
                                         errcode = -EFAULT;
                         }
                         break;
-                case 'E':{
-                                 int32_t cnt = va_arg(ap, int32_t);
-                                 const char *k = va_arg(ap, const void *);
-                                 const char __user *u = va_arg(ap,
-                                                        const void __user *);
-                                 errcode = p9pdu_writef(pdu, proto_version, "d",
-                                                 cnt);
-                                 if (!errcode && pdu_write_urw(pdu, k, u, cnt))
-                                        errcode = -EFAULT;
-                         }
-                         break;
-                case 'F':{
-                                 int32_t cnt = va_arg(ap, int32_t);
-                                 const char *k = va_arg(ap, const void *);
-                                 errcode = p9pdu_writef(pdu, proto_version, "d",
-                                                 cnt);
-                                 if (!errcode && pdu_write_readdir(pdu, k, cnt))
-                                        errcode = -EFAULT;
-                         }
-                         break;
                 case 'U':{
                                 int32_t count = va_arg(ap, int32_t);
                                 const char __user *udata =
@@ -591,7 +522,7 @@ p9pdu_writef(struct p9_fcall *pdu, int proto_version, const char *fmt, ...)
         return ret;
 }
 
-int p9stat_read(char *buf, int len, struct p9_wstat *st, int proto_version)
+int p9stat_read(struct p9_client *clnt, char *buf, int len, struct p9_wstat *st)
 {
         struct p9_fcall fake_pdu;
         int ret;
@@ -601,10 +532,10 @@ int p9stat_read(char *buf, int len, struct p9_wstat *st, int proto_version)
         fake_pdu.sdata = buf;
         fake_pdu.offset = 0;
 
-        ret = p9pdu_readf(&fake_pdu, proto_version, "S", st);
+        ret = p9pdu_readf(&fake_pdu, clnt->proto_version, "S", st);
         if (ret) {
                 P9_DPRINTK(P9_DEBUG_9P, "<<< p9stat_read failed: %d\n", ret);
-                P9_DUMP_PKT(0, &fake_pdu);
+                trace_9p_protocol_dump(clnt, &fake_pdu);
         }
 
         return ret;
@@ -617,7 +548,7 @@ int p9pdu_prepare(struct p9_fcall *pdu, int16_t tag, int8_t type)
         return p9pdu_writef(pdu, 0, "dbw", 0, type, tag);
 }
 
-int p9pdu_finalize(struct p9_fcall *pdu)
+int p9pdu_finalize(struct p9_client *clnt, struct p9_fcall *pdu)
 {
         int size = pdu->size;
         int err;
@@ -626,7 +557,7 @@ int p9pdu_finalize(struct p9_fcall *pdu)
         err = p9pdu_writef(pdu, 0, "d", size);
         pdu->size = size;
 
-        P9_DUMP_PKT(0, pdu);
+        trace_9p_protocol_dump(clnt, pdu);
         P9_DPRINTK(P9_DEBUG_9P, ">>> size=%d type: %d tag: %d\n", pdu->size,
                                                         pdu->id, pdu->tag);
 
@@ -637,14 +568,10 @@ void p9pdu_reset(struct p9_fcall *pdu)
 {
         pdu->offset = 0;
         pdu->size = 0;
-        pdu->private = NULL;
-        pdu->pubuf = NULL;
-        pdu->pkbuf = NULL;
-        pdu->pbuf_size = 0;
 }
 
-int p9dirent_read(char *buf, int len, struct p9_dirent *dirent,
-                                                int proto_version)
+int p9dirent_read(struct p9_client *clnt, char *buf, int len,
+                  struct p9_dirent *dirent)
 {
         struct p9_fcall fake_pdu;
         int ret;
@@ -655,11 +582,11 @@ int p9dirent_read(char *buf, int len, struct p9_dirent *dirent,
         fake_pdu.sdata = buf;
         fake_pdu.offset = 0;
 
-        ret = p9pdu_readf(&fake_pdu, proto_version, "Qqbs", &dirent->qid,
-                        &dirent->d_off, &dirent->d_type, &nameptr);
+        ret = p9pdu_readf(&fake_pdu, clnt->proto_version, "Qqbs", &dirent->qid,
+                          &dirent->d_off, &dirent->d_type, &nameptr);
         if (ret) {
                 P9_DPRINTK(P9_DEBUG_9P, "<<< p9dirent_read failed: %d\n", ret);
-                P9_DUMP_PKT(1, &fake_pdu);
+                trace_9p_protocol_dump(clnt, &fake_pdu);
                 goto out;
         }
 
diff --git a/net/9p/protocol.h b/net/9p/protocol.h
index 2431c0f38d56..2cc525fa49fa 100644
--- a/net/9p/protocol.h
+++ b/net/9p/protocol.h
@@ -29,6 +29,6 @@ int p9pdu_vwritef(struct p9_fcall *pdu, int proto_version, const char *fmt,
                                                                 va_list ap);
 int p9pdu_readf(struct p9_fcall *pdu, int proto_version, const char *fmt, ...);
 int p9pdu_prepare(struct p9_fcall *pdu, int16_t tag, int8_t type);
-int p9pdu_finalize(struct p9_fcall *pdu);
-void p9pdu_dump(int, struct p9_fcall *);
+int p9pdu_finalize(struct p9_client *clnt, struct p9_fcall *pdu);
 void p9pdu_reset(struct p9_fcall *pdu);
+size_t pdu_read(struct p9_fcall *pdu, void *data, size_t size);
diff --git a/net/9p/trans_common.c b/net/9p/trans_common.c
index 9a70ebdec56e..de8df957867d 100644
--- a/net/9p/trans_common.c
+++ b/net/9p/trans_common.c
@@ -21,30 +21,25 @@
 
 /**
  *  p9_release_req_pages - Release pages after the transaction.
- *  @*private: PDU's private page of struct trans_rpage_info
  */
-void
-p9_release_req_pages(struct trans_rpage_info *rpinfo)
+void p9_release_pages(struct page **pages, int nr_pages)
 {
         int i = 0;
-
-        while (rpinfo->rp_data[i] && rpinfo->rp_nr_pages--) {
-                put_page(rpinfo->rp_data[i]);
+        while (pages[i] && nr_pages--) {
+                put_page(pages[i]);
                 i++;
         }
 }
-EXPORT_SYMBOL(p9_release_req_pages);
+EXPORT_SYMBOL(p9_release_pages);
 
 /**
  * p9_nr_pages - Return number of pages needed to accommodate the payload.
  */
-int
-p9_nr_pages(struct p9_req_t *req)
+int p9_nr_pages(char *data, int len)
 {
         unsigned long start_page, end_page;
-        start_page =  (unsigned long)req->tc->pubuf >> PAGE_SHIFT;
-        end_page = ((unsigned long)req->tc->pubuf + req->tc->pbuf_size +
-                        PAGE_SIZE - 1) >> PAGE_SHIFT;
+        start_page =  (unsigned long)data >> PAGE_SHIFT;
+        end_page = ((unsigned long)data + len + PAGE_SIZE - 1) >> PAGE_SHIFT;
         return end_page - start_page;
 }
 EXPORT_SYMBOL(p9_nr_pages);
@@ -58,35 +53,17 @@ EXPORT_SYMBOL(p9_nr_pages);
  * @nr_pages: number of pages to accommodate the payload
  * @rw: Indicates if the pages are for read or write.
  */
-int
-p9_payload_gup(struct p9_req_t *req, size_t *pdata_off, int *pdata_len,
-                int nr_pages, u8 rw)
-{
-        uint32_t first_page_bytes = 0;
-        int32_t pdata_mapped_pages;
-        struct trans_rpage_info  *rpinfo;
-
-        *pdata_off = (__force size_t)req->tc->pubuf & (PAGE_SIZE-1);
 
-        if (*pdata_off)
-                first_page_bytes = min(((size_t)PAGE_SIZE - *pdata_off),
-                                       req->tc->pbuf_size);
+int p9_payload_gup(char *data, int *nr_pages, struct page **pages, int write)
+{
+        int nr_mapped_pages;
 
-        rpinfo = req->tc->private;
-        pdata_mapped_pages = get_user_pages_fast((unsigned long)req->tc->pubuf,
-                        nr_pages, rw, &rpinfo->rp_data[0]);
-        if (pdata_mapped_pages <= 0)
-                return pdata_mapped_pages;
+        nr_mapped_pages = get_user_pages_fast((unsigned long)data,
+                                              *nr_pages, write, pages);
+        if (nr_mapped_pages <= 0)
+                return nr_mapped_pages;
 
-        rpinfo->rp_nr_pages = pdata_mapped_pages;
-        if (*pdata_off) {
-                *pdata_len = first_page_bytes;
-                *pdata_len += min((req->tc->pbuf_size - *pdata_len),
-                                ((size_t)pdata_mapped_pages - 1) << PAGE_SHIFT);
-        } else {
-                *pdata_len = min(req->tc->pbuf_size,
-                                (size_t)pdata_mapped_pages << PAGE_SHIFT);
-        }
+        *nr_pages = nr_mapped_pages;
         return 0;
 }
 EXPORT_SYMBOL(p9_payload_gup);
diff --git a/net/9p/trans_common.h b/net/9p/trans_common.h
index 76309223bb02..173bb550a9eb 100644
--- a/net/9p/trans_common.h
+++ b/net/9p/trans_common.h
@@ -12,21 +12,6 @@
  *
  */
 
-/* TRUE if it is user context */
-#define P9_IS_USER_CONTEXT (!segment_eq(get_fs(), KERNEL_DS))
-
-/**
- * struct trans_rpage_info - To store mapped page information in PDU.
- * @rp_alloc:Set if this structure is allocd, not a reuse unused space in pdu.
- * @rp_nr_pages: Number of mapped pages
- * @rp_data: Array of page pointers
- */
-struct trans_rpage_info {
-        u8 rp_alloc;
-        int rp_nr_pages;
-        struct page *rp_data[0];
-};
-
-void p9_release_req_pages(struct trans_rpage_info *);
-int p9_payload_gup(struct p9_req_t *, size_t *, int *, int, u8);
-int p9_nr_pages(struct p9_req_t *);
+void p9_release_pages(struct page **, int);
+int p9_payload_gup(char *, int *, struct page **, int);
+int p9_nr_pages(char *, int);
diff --git a/net/9p/trans_virtio.c b/net/9p/trans_virtio.c
index e317583fcc73..32aa9834229c 100644
--- a/net/9p/trans_virtio.c
+++ b/net/9p/trans_virtio.c
@@ -150,12 +150,10 @@ static void req_done(struct virtqueue *vq)
         while (1) {
                 spin_lock_irqsave(&chan->lock, flags);
                 rc = virtqueue_get_buf(chan->vq, &len);
-
                 if (rc == NULL) {
                         spin_unlock_irqrestore(&chan->lock, flags);
                         break;
                 }
-
                 chan->ring_bufs_avail = 1;
                 spin_unlock_irqrestore(&chan->lock, flags);
                 /* Wakeup if anyone waiting for VirtIO ring space. */
@@ -163,17 +161,6 @@ static void req_done(struct virtqueue *vq)
                 P9_DPRINTK(P9_DEBUG_TRANS, ": rc %p\n", rc);
                 P9_DPRINTK(P9_DEBUG_TRANS, ": lookup tag %d\n", rc->tag);
                 req = p9_tag_lookup(chan->client, rc->tag);
-                if (req->tc->private) {
-                        struct trans_rpage_info *rp = req->tc->private;
-                        int p = rp->rp_nr_pages;
-                        /*Release pages */
-                        p9_release_req_pages(rp);
-                        atomic_sub(p, &vp_pinned);
-                        wake_up(&vp_wq);
-                        if (rp->rp_alloc)
-                                kfree(rp);
-                        req->tc->private = NULL;
-                }
                 req->status = REQ_STATUS_RCVD;
                 p9_client_cb(chan->client, req);
         }
@@ -193,9 +180,8 @@ static void req_done(struct virtqueue *vq)
  *
  */
 
-static int
-pack_sg_list(struct scatterlist *sg, int start, int limit, char *data,
-                                                                int count)
+static int pack_sg_list(struct scatterlist *sg, int start,
+                        int limit, char *data, int count)
 {
         int s;
         int index = start;
@@ -224,31 +210,36 @@ static int p9_virtio_cancel(struct p9_client *client, struct p9_req_t *req)
  * this takes a list of pages.
  * @sg: scatter/gather list to pack into
  * @start: which segment of the sg_list to start at
- * @pdata_off: Offset into the first page
  * @**pdata: a list of pages to add into sg.
+ * @nr_pages: number of pages to pack into the scatter/gather list
+ * @data: data to pack into scatter/gather list
  * @count: amount of data to pack into the scatter/gather list
  */
 static int
-pack_sg_list_p(struct scatterlist *sg, int start, int limit, size_t pdata_off,
-                struct page **pdata, int count)
+pack_sg_list_p(struct scatterlist *sg, int start, int limit,
+               struct page **pdata, int nr_pages, char *data, int count)
 {
-        int s;
-        int i = 0;
+        int i = 0, s;
+        int data_off;
         int index = start;
 
-        if (pdata_off) {
-                s = min((int)(PAGE_SIZE - pdata_off), count);
-                sg_set_page(&sg[index++], pdata[i++], s, pdata_off);
-                count -= s;
-        }
-
-        while (count) {
-                BUG_ON(index > limit);
-                s = min((int)PAGE_SIZE, count);
-                sg_set_page(&sg[index++], pdata[i++], s, 0);
+        BUG_ON(nr_pages > (limit - start));
+        /*
+         * if the first page doesn't start at
+         * page boundary find the offset
+         */
+        data_off = offset_in_page(data);
+        while (nr_pages) {
+                s = rest_of_page(data);
+                if (s > count)
+                        s = count;
+                sg_set_page(&sg[index++], pdata[i++], s, data_off);
+                data_off = 0;
+                data += s;
                 count -= s;
+                nr_pages--;
         }
-        return index-start;
+        return index - start;
 }
 
 /**
@@ -261,114 +252,166 @@ pack_sg_list_p(struct scatterlist *sg, int start, int limit, size_t pdata_off,
 static int
 p9_virtio_request(struct p9_client *client, struct p9_req_t *req)
 {
-        int in, out, inp, outp;
-        struct virtio_chan *chan = client->trans;
+        int err;
+        int in, out;
         unsigned long flags;
-        size_t pdata_off = 0;
-        struct trans_rpage_info *rpinfo = NULL;
-        int err, pdata_len = 0;
+        struct virtio_chan *chan = client->trans;
 
         P9_DPRINTK(P9_DEBUG_TRANS, "9p debug: virtio request\n");
 
         req->status = REQ_STATUS_SENT;
+req_retry:
+        spin_lock_irqsave(&chan->lock, flags);
+
+        /* Handle out VirtIO ring buffers */
+        out = pack_sg_list(chan->sg, 0,
+                           VIRTQUEUE_NUM, req->tc->sdata, req->tc->size);
 
-        if (req->tc->pbuf_size && (req->tc->pubuf && P9_IS_USER_CONTEXT)) {
-                int nr_pages = p9_nr_pages(req);
-                int rpinfo_size = sizeof(struct trans_rpage_info) +
-                        sizeof(struct page *) * nr_pages;
+        in = pack_sg_list(chan->sg, out,
+                          VIRTQUEUE_NUM, req->rc->sdata, req->rc->capacity);
 
-                if (atomic_read(&vp_pinned) >= chan->p9_max_pages) {
-                        err = wait_event_interruptible(vp_wq,
-                                atomic_read(&vp_pinned) < chan->p9_max_pages);
+        err = virtqueue_add_buf(chan->vq, chan->sg, out, in, req->tc);
+        if (err < 0) {
+                if (err == -ENOSPC) {
+                        chan->ring_bufs_avail = 0;
+                        spin_unlock_irqrestore(&chan->lock, flags);
+                        err = wait_event_interruptible(*chan->vc_wq,
+                                                        chan->ring_bufs_avail);
                         if (err  == -ERESTARTSYS)
                                 return err;
-                        P9_DPRINTK(P9_DEBUG_TRANS, "9p: May gup pages now.\n");
-                }
 
-                if (rpinfo_size <= (req->tc->capacity - req->tc->size)) {
-                        /* We can use sdata */
-                        req->tc->private = req->tc->sdata + req->tc->size;
-                        rpinfo = (struct trans_rpage_info *)req->tc->private;
-                        rpinfo->rp_alloc = 0;
+                        P9_DPRINTK(P9_DEBUG_TRANS, "9p:Retry virtio request\n");
+                        goto req_retry;
                 } else {
-                        req->tc->private = kmalloc(rpinfo_size, GFP_NOFS);
-                        if (!req->tc->private) {
-                                P9_DPRINTK(P9_DEBUG_TRANS, "9p debug: "
-                                        "private kmalloc returned NULL");
-                                return -ENOMEM;
-                        }
-                        rpinfo = (struct trans_rpage_info *)req->tc->private;
-                        rpinfo->rp_alloc = 1;
+                        spin_unlock_irqrestore(&chan->lock, flags);
+                        P9_DPRINTK(P9_DEBUG_TRANS,
+                                        "9p debug: "
+                                        "virtio rpc add_buf returned failure");
+                        return -EIO;
                 }
+        }
+        virtqueue_kick(chan->vq);
+        spin_unlock_irqrestore(&chan->lock, flags);
 
-                err = p9_payload_gup(req, &pdata_off, &pdata_len, nr_pages,
-                                req->tc->id == P9_TREAD ? 1 : 0);
-                if (err < 0) {
-                        if (rpinfo->rp_alloc)
-                                kfree(rpinfo);
+        P9_DPRINTK(P9_DEBUG_TRANS, "9p debug: virtio request kicked\n");
+        return 0;
+}
+
+static int p9_get_mapped_pages(struct virtio_chan *chan,
+                               struct page **pages, char *data,
+                               int nr_pages, int write, int kern_buf)
+{
+        int err;
+        if (!kern_buf) {
+                /*
+                 * We allow only p9_max_pages pinned. We wait for the
+                 * Other zc request to finish here
+                 */
+                if (atomic_read(&vp_pinned) >= chan->p9_max_pages) {
+                        err = wait_event_interruptible(vp_wq,
+                              (atomic_read(&vp_pinned) < chan->p9_max_pages));
+                        if (err == -ERESTARTSYS)
+                                return err;
+                }
+                err = p9_payload_gup(data, &nr_pages, pages, write);
+                if (err < 0)
                         return err;
-                } else {
-                        atomic_add(rpinfo->rp_nr_pages, &vp_pinned);
+                atomic_add(nr_pages, &vp_pinned);
+        } else {
+                /* kernel buffer, no need to pin pages */
+                int s, index = 0;
+                int count = nr_pages;
+                while (nr_pages) {
+                        s = rest_of_page(data);
+                        pages[index++] = virt_to_page(data);
+                        data += s;
+                        nr_pages--;
                 }
+                nr_pages = count;
         }
+        return nr_pages;
+}
 
-req_retry_pinned:
-        spin_lock_irqsave(&chan->lock, flags);
+/**
+ * p9_virtio_zc_request - issue a zero copy request
+ * @client: client instance issuing the request
+ * @req: request to be issued
+ * @uidata: user bffer that should be ued for zero copy read
+ * @uodata: user buffer that shoud be user for zero copy write
+ * @inlen: read buffer size
+ * @olen: write buffer size
+ * @hdrlen: reader header size, This is the size of response protocol data
+ *
+ */
+static int
+p9_virtio_zc_request(struct p9_client *client, struct p9_req_t *req,
+                     char *uidata, char *uodata, int inlen,
+                     int outlen, int in_hdr_len, int kern_buf)
+{
+        int in, out, err;
+        unsigned long flags;
+        int in_nr_pages = 0, out_nr_pages = 0;
+        struct page **in_pages = NULL, **out_pages = NULL;
+        struct virtio_chan *chan = client->trans;
 
-        /* Handle out VirtIO ring buffers */
-        out = pack_sg_list(chan->sg, 0, VIRTQUEUE_NUM, req->tc->sdata,
-                        req->tc->size);
-
-        if (req->tc->pbuf_size && (req->tc->id == P9_TWRITE)) {
-                /* We have additional write payload buffer to take care */
-                if (req->tc->pubuf && P9_IS_USER_CONTEXT) {
-                        outp = pack_sg_list_p(chan->sg, out, VIRTQUEUE_NUM,
-                                        pdata_off, rpinfo->rp_data, pdata_len);
-                } else {
-                        char *pbuf;
-                        if (req->tc->pubuf)
-                                pbuf = (__force char *) req->tc->pubuf;
-                        else
-                                pbuf = req->tc->pkbuf;
-                        outp = pack_sg_list(chan->sg, out, VIRTQUEUE_NUM, pbuf,
-                                        req->tc->pbuf_size);
+        P9_DPRINTK(P9_DEBUG_TRANS, "9p debug: virtio request\n");
+
+        if (uodata) {
+                out_nr_pages = p9_nr_pages(uodata, outlen);
+                out_pages = kmalloc(sizeof(struct page *) * out_nr_pages,
+                                    GFP_NOFS);
+                if (!out_pages) {
+                        err = -ENOMEM;
+                        goto err_out;
+                }
+                out_nr_pages = p9_get_mapped_pages(chan, out_pages, uodata,
+                                                   out_nr_pages, 0, kern_buf);
+                if (out_nr_pages < 0) {
+                        err = out_nr_pages;
+                        kfree(out_pages);
+                        out_pages = NULL;
+                        goto err_out;
                 }
-                out += outp;
         }
-
-        /* Handle in VirtIO ring buffers */
-        if (req->tc->pbuf_size &&
-                ((req->tc->id == P9_TREAD) || (req->tc->id == P9_TREADDIR))) {
-                /*
-                 * Take care of additional Read payload.
-                 * 11 is the read/write header = PDU Header(7) + IO Size (4).
-                 * Arrange in such a way that server places header in the
-                 * alloced memory and payload onto the user buffer.
-                 */
-                inp = pack_sg_list(chan->sg, out,
-                                   VIRTQUEUE_NUM, req->rc->sdata, 11);
-                /*
-                 * Running executables in the filesystem may result in
-                 * a read request with kernel buffer as opposed to user buffer.
-                 */
-                if (req->tc->pubuf && P9_IS_USER_CONTEXT) {
-                        in = pack_sg_list_p(chan->sg, out+inp, VIRTQUEUE_NUM,
-                                        pdata_off, rpinfo->rp_data, pdata_len);
-                } else {
-                        char *pbuf;
-                        if (req->tc->pubuf)
-                                pbuf = (__force char *) req->tc->pubuf;
-                        else
-                                pbuf = req->tc->pkbuf;
-
-                        in = pack_sg_list(chan->sg, out+inp, VIRTQUEUE_NUM,
-                                        pbuf, req->tc->pbuf_size);
+        if (uidata) {
+                in_nr_pages = p9_nr_pages(uidata, inlen);
+                in_pages = kmalloc(sizeof(struct page *) * in_nr_pages,
+                                   GFP_NOFS);
+                if (!in_pages) {
+                        err = -ENOMEM;
+                        goto err_out;
+                }
+                in_nr_pages = p9_get_mapped_pages(chan, in_pages, uidata,
+                                                  in_nr_pages, 1, kern_buf);
+                if (in_nr_pages < 0) {
+                        err = in_nr_pages;
+                        kfree(in_pages);
+                        in_pages = NULL;
+                        goto err_out;
                 }
-                in += inp;
-        } else {
-                in = pack_sg_list(chan->sg, out, VIRTQUEUE_NUM,
-                                  req->rc->sdata, req->rc->capacity);
         }
+        req->status = REQ_STATUS_SENT;
+req_retry_pinned:
+        spin_lock_irqsave(&chan->lock, flags);
+        /* out data */
+        out = pack_sg_list(chan->sg, 0,
+                           VIRTQUEUE_NUM, req->tc->sdata, req->tc->size);
+
+        if (out_pages)
+                out += pack_sg_list_p(chan->sg, out, VIRTQUEUE_NUM,
+                                      out_pages, out_nr_pages, uodata, outlen);
+        /*
+         * Take care of in data
+         * For example TREAD have 11.
+         * 11 is the read/write header = PDU Header(7) + IO Size (4).
+         * Arrange in such a way that server places header in the
+         * alloced memory and payload onto the user buffer.
+         */
+        in = pack_sg_list(chan->sg, out,
+                          VIRTQUEUE_NUM, req->rc->sdata, in_hdr_len);
+        if (in_pages)
+                in += pack_sg_list_p(chan->sg, out + in, VIRTQUEUE_NUM,
+                                     in_pages, in_nr_pages, uidata, inlen);
 
         err = virtqueue_add_buf(chan->vq, chan->sg, out, in, req->tc);
         if (err < 0) {
@@ -376,28 +419,45 @@ req_retry_pinned:
                         chan->ring_bufs_avail = 0;
                         spin_unlock_irqrestore(&chan->lock, flags);
                         err = wait_event_interruptible(*chan->vc_wq,
-                                                        chan->ring_bufs_avail);
+                                                       chan->ring_bufs_avail);
                         if (err  == -ERESTARTSYS)
-                                return err;
+                                goto err_out;
 
                         P9_DPRINTK(P9_DEBUG_TRANS, "9p:Retry virtio request\n");
                         goto req_retry_pinned;
                 } else {
                         spin_unlock_irqrestore(&chan->lock, flags);
                         P9_DPRINTK(P9_DEBUG_TRANS,
-                                        "9p debug: "
-                                        "virtio rpc add_buf returned failure");
-                        if (rpinfo && rpinfo->rp_alloc)
-                                kfree(rpinfo);
-                        return -EIO;
+                                   "9p debug: "
+                                   "virtio rpc add_buf returned failure");
+                        err = -EIO;
+                        goto err_out;
                 }
         }
-
         virtqueue_kick(chan->vq);
         spin_unlock_irqrestore(&chan->lock, flags);
-
         P9_DPRINTK(P9_DEBUG_TRANS, "9p debug: virtio request kicked\n");
-        return 0;
+        err = wait_event_interruptible(*req->wq,
+                                       req->status >= REQ_STATUS_RCVD);
+        /*
+         * Non kernel buffers are pinned, unpin them
+         */
+err_out:
+        if (!kern_buf) {
+                if (in_pages) {
+                        p9_release_pages(in_pages, in_nr_pages);
+                        atomic_sub(in_nr_pages, &vp_pinned);
+                }
+                if (out_pages) {
+                        p9_release_pages(out_pages, out_nr_pages);
+                        atomic_sub(out_nr_pages, &vp_pinned);
+                }
+                /* wakeup anybody waiting for slots to pin pages */
+                wake_up(&vp_wq);
+        }
+        kfree(in_pages);
+        kfree(out_pages);
+        return err;
 }
 
 static ssize_t p9_mount_tag_show(struct device *dev,
@@ -591,8 +651,8 @@ static struct p9_trans_module p9_virtio_trans = {
         .create = p9_virtio_create,
         .close = p9_virtio_close,
         .request = p9_virtio_request,
+        .zc_request = p9_virtio_zc_request,
         .cancel = p9_virtio_cancel,
-
         /*
          * We leave one entry for input and one entry for response
          * headers. We also skip one more entry to accomodate, address
@@ -600,7 +660,6 @@ static struct p9_trans_module p9_virtio_trans = {
          * page in zero copy.
          */
         .maxsize = PAGE_SIZE * (VIRTQUEUE_NUM - 3),
-        .pref = P9_TRANS_PREF_PAYLOAD_SEP,
         .def = 0,
         .owner = THIS_MODULE,
 };
diff --git a/net/appletalk/aarp.c b/net/appletalk/aarp.c
index 1acc69576df8..173a2e82f486 100644
--- a/net/appletalk/aarp.c
+++ b/net/appletalk/aarp.c
@@ -39,6 +39,7 @@
 #include <linux/init.h>
 #include <linux/proc_fs.h>
 #include <linux/seq_file.h>
+#include <linux/export.h>
 
 int sysctl_aarp_expiry_time = AARP_EXPIRY_TIME;
 int sysctl_aarp_tick_time = AARP_TICK_TIME;
diff --git a/net/appletalk/atalk_proc.c b/net/appletalk/atalk_proc.c
index 6ef0e761e5de..b5b1a221c242 100644
--- a/net/appletalk/atalk_proc.c
+++ b/net/appletalk/atalk_proc.c
@@ -14,6 +14,7 @@
 #include <net/net_namespace.h>
 #include <net/sock.h>
 #include <linux/atalk.h>
+#include <linux/export.h>
 
 
 static __inline__ struct atalk_iface *atalk_get_interface_idx(loff_t pos)
diff --git a/net/appletalk/ddp.c b/net/appletalk/ddp.c
index b1fe7c35e8d1..bfa9ab93eda5 100644
--- a/net/appletalk/ddp.c
+++ b/net/appletalk/ddp.c
@@ -951,13 +951,12 @@ static unsigned long atalk_sum_skb(const struct sk_buff *skb, int offset,
         /* checksum stuff in frags */
         for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) {
                 int end;
-
+                const skb_frag_t *frag = &skb_shinfo(skb)->frags[i];
                 WARN_ON(start > offset + len);
 
-                end = start + skb_shinfo(skb)->frags[i].size;
+                end = start + skb_frag_size(frag);
                 if ((copy = end - offset) > 0) {
                         u8 *vaddr;
-                        skb_frag_t *frag = &skb_shinfo(skb)->frags[i];
 
                         if (copy > len)
                                 copy = len;
diff --git a/net/atm/lec.c b/net/atm/lec.c
index 215c9fad7cdf..f1964caa0f83 100644
--- a/net/atm/lec.c
+++ b/net/atm/lec.c
@@ -643,7 +643,7 @@ static const struct net_device_ops lec_netdev_ops = {
         .ndo_start_xmit         = lec_start_xmit,
         .ndo_change_mtu         = lec_change_mtu,
         .ndo_tx_timeout         = lec_tx_timeout,
-        .ndo_set_multicast_list = lec_set_multicast_list,
+        .ndo_set_rx_mode        = lec_set_multicast_list,
 };
 
 static const unsigned char lec_ctrl_magic[] = {
diff --git a/net/atm/pvc.c b/net/atm/pvc.c
index 437ee70c5e62..3a734919c36c 100644
--- a/net/atm/pvc.c
+++ b/net/atm/pvc.c
@@ -11,6 +11,7 @@
 #include <linux/init.h>
 #include <linux/skbuff.h>
 #include <linux/bitops.h>
+#include <linux/export.h>
 #include <net/sock.h>           /* for sock_no_* */
 
 #include "resources.h"          /* devs and vccs */
diff --git a/net/atm/svc.c b/net/atm/svc.c
index 754ee4791d96..1281049c135f 100644
--- a/net/atm/svc.c
+++ b/net/atm/svc.c
@@ -20,6 +20,7 @@
 #include <linux/bitops.h>
 #include <net/sock.h>           /* for sock_no_* */
 #include <linux/uaccess.h>
+#include <linux/export.h>
 
 #include "resources.h"
 #include "common.h"             /* common for PVCs and SVCs */
diff --git a/net/ax25/ax25_route.c b/net/ax25/ax25_route.c
index a1690845dc6e..87fddab22e0f 100644
--- a/net/ax25/ax25_route.c
+++ b/net/ax25/ax25_route.c
@@ -38,6 +38,7 @@
 #include <linux/interrupt.h>
 #include <linux/init.h>
 #include <linux/seq_file.h>
+#include <linux/export.h>
 
 static ax25_route *ax25_route_list;
 static DEFINE_RWLOCK(ax25_route_lock);
diff --git a/net/ax25/ax25_uid.c b/net/ax25/ax25_uid.c
index d349be9578f5..4c83137b5954 100644
--- a/net/ax25/ax25_uid.c
+++ b/net/ax25/ax25_uid.c
@@ -37,6 +37,7 @@
 #include <linux/stat.h>
 #include <linux/netfilter.h>
 #include <linux/sysctl.h>
+#include <linux/export.h>
 #include <net/ip.h>
 #include <net/arp.h>
 
diff --git a/net/batman-adv/Makefile b/net/batman-adv/Makefile
index 2de93d00631b..ce6861166499 100644
--- a/net/batman-adv/Makefile
+++ b/net/batman-adv/Makefile
@@ -19,8 +19,8 @@
 #
 
 obj-$(CONFIG_BATMAN_ADV) += batman-adv.o
-batman-adv-y += aggregation.o
 batman-adv-y += bat_debugfs.o
+batman-adv-y += bat_iv_ogm.o
 batman-adv-y += bat_sysfs.o
 batman-adv-y += bitarray.o
 batman-adv-y += gateway_client.o
diff --git a/net/batman-adv/aggregation.c b/net/batman-adv/aggregation.c
deleted file mode 100644
index 69467fe71ff2..000000000000
--- a/net/batman-adv/aggregation.c
+++ /dev/null
@@ -1,293 +0,0 @@
-/*
- * Copyright (C) 2007-2011 B.A.T.M.A.N. contributors:
- *
- * Marek Lindner, Simon Wunderlich
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of version 2 of the GNU General Public
- * License as published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
- * 02110-1301, USA
- *
- */
-
-#include "main.h"
-#include "translation-table.h"
-#include "aggregation.h"
-#include "send.h"
-#include "routing.h"
-#include "hard-interface.h"
-
-/* return true if new_packet can be aggregated with forw_packet */
-static bool can_aggregate_with(const struct batman_packet *new_batman_packet,
-                               struct bat_priv *bat_priv,
-                               int packet_len,
-                               unsigned long send_time,
-                               bool directlink,
-                               const struct hard_iface *if_incoming,
-                               const struct forw_packet *forw_packet)
-{
-        struct batman_packet *batman_packet =
-                (struct batman_packet *)forw_packet->skb->data;
-        int aggregated_bytes = forw_packet->packet_len + packet_len;
-        struct hard_iface *primary_if = NULL;
-        bool res = false;
-
-        /**
-         * we can aggregate the current packet to this aggregated packet
-         * if:
-         *
-         * - the send time is within our MAX_AGGREGATION_MS time
-         * - the resulting packet wont be bigger than
-         *   MAX_AGGREGATION_BYTES
-         */
-
-        if (time_before(send_time, forw_packet->send_time) &&
-            time_after_eq(send_time + msecs_to_jiffies(MAX_AGGREGATION_MS),
-                                        forw_packet->send_time) &&
-            (aggregated_bytes <= MAX_AGGREGATION_BYTES)) {
-
-                /**
-                 * check aggregation compatibility
-                 * -> direct link packets are broadcasted on
-                 *    their interface only
-                 * -> aggregate packet if the current packet is
-                 *    a "global" packet as well as the base
-                 *    packet
-                 */
-
-                primary_if = primary_if_get_selected(bat_priv);
-                if (!primary_if)
-                        goto out;
-
-                /* packets without direct link flag and high TTL
-                 * are flooded through the net  */
-                if ((!directlink) &&
-                    (!(batman_packet->flags & DIRECTLINK)) &&
-                    (batman_packet->ttl != 1) &&
-
-                    /* own packets originating non-primary
-                     * interfaces leave only that interface */
-                    ((!forw_packet->own) ||
-                     (forw_packet->if_incoming == primary_if))) {
-                        res = true;
-                        goto out;
-                }
-
-                /* if the incoming packet is sent via this one
-                 * interface only - we still can aggregate */
-                if ((directlink) &&
-                    (new_batman_packet->ttl == 1) &&
-                    (forw_packet->if_incoming == if_incoming) &&
-
-                    /* packets from direct neighbors or
-                     * own secondary interface packets
-                     * (= secondary interface packets in general) */
-                    (batman_packet->flags & DIRECTLINK ||
-                     (forw_packet->own &&
-                      forw_packet->if_incoming != primary_if))) {
-                        res = true;
-                        goto out;
-                }
-        }
-
-out:
-        if (primary_if)
-                hardif_free_ref(primary_if);
-        return res;
-}
-
-/* create a new aggregated packet and add this packet to it */
-static void new_aggregated_packet(const unsigned char *packet_buff,
-                                  int packet_len, unsigned long send_time,
-                                  bool direct_link,
-                                  struct hard_iface *if_incoming,
-                                  int own_packet)
-{
-        struct bat_priv *bat_priv = netdev_priv(if_incoming->soft_iface);
-        struct forw_packet *forw_packet_aggr;
-        unsigned char *skb_buff;
-
-        if (!atomic_inc_not_zero(&if_incoming->refcount))
-                return;
-
-        /* own packet should always be scheduled */
-        if (!own_packet) {
-                if (!atomic_dec_not_zero(&bat_priv->batman_queue_left)) {
-                        bat_dbg(DBG_BATMAN, bat_priv,
-                                "batman packet queue full\n");
-                        goto out;
-                }
-        }
-
-        forw_packet_aggr = kmalloc(sizeof(*forw_packet_aggr), GFP_ATOMIC);
-        if (!forw_packet_aggr) {
-                if (!own_packet)
-                        atomic_inc(&bat_priv->batman_queue_left);
-                goto out;
-        }
-
-        if ((atomic_read(&bat_priv->aggregated_ogms)) &&
-            (packet_len < MAX_AGGREGATION_BYTES))
-                forw_packet_aggr->skb = dev_alloc_skb(MAX_AGGREGATION_BYTES +
-                                                      sizeof(struct ethhdr));
-        else
-                forw_packet_aggr->skb = dev_alloc_skb(packet_len +
-                                                      sizeof(struct ethhdr));
-
-        if (!forw_packet_aggr->skb) {
-                if (!own_packet)
-                        atomic_inc(&bat_priv->batman_queue_left);
-                kfree(forw_packet_aggr);
-                goto out;
-        }
-        skb_reserve(forw_packet_aggr->skb, sizeof(struct ethhdr));
-
-        INIT_HLIST_NODE(&forw_packet_aggr->list);
-
-        skb_buff = skb_put(forw_packet_aggr->skb, packet_len);
-        forw_packet_aggr->packet_len = packet_len;
-        memcpy(skb_buff, packet_buff, packet_len);
-
-        forw_packet_aggr->own = own_packet;
-        forw_packet_aggr->if_incoming = if_incoming;
-        forw_packet_aggr->num_packets = 0;
-        forw_packet_aggr->direct_link_flags = NO_FLAGS;
-        forw_packet_aggr->send_time = send_time;
-
-        /* save packet direct link flag status */
-        if (direct_link)
-                forw_packet_aggr->direct_link_flags |= 1;
-
-        /* add new packet to packet list */
-        spin_lock_bh(&bat_priv->forw_bat_list_lock);
-        hlist_add_head(&forw_packet_aggr->list, &bat_priv->forw_bat_list);
-        spin_unlock_bh(&bat_priv->forw_bat_list_lock);
-
-        /* start timer for this packet */
-        INIT_DELAYED_WORK(&forw_packet_aggr->delayed_work,
-                          send_outstanding_bat_packet);
-        queue_delayed_work(bat_event_workqueue,
-                           &forw_packet_aggr->delayed_work,
-                           send_time - jiffies);
-
-        return;
-out:
-        hardif_free_ref(if_incoming);
-}
-
-/* aggregate a new packet into the existing aggregation */
-static void aggregate(struct forw_packet *forw_packet_aggr,
-                      const unsigned char *packet_buff, int packet_len,
-                      bool direct_link)
-{
-        unsigned char *skb_buff;
-
-        skb_buff = skb_put(forw_packet_aggr->skb, packet_len);
-        memcpy(skb_buff, packet_buff, packet_len);
-        forw_packet_aggr->packet_len += packet_len;
-        forw_packet_aggr->num_packets++;
-
-        /* save packet direct link flag status */
-        if (direct_link)
-                forw_packet_aggr->direct_link_flags |=
-                        (1 << forw_packet_aggr->num_packets);
-}
-
-void add_bat_packet_to_list(struct bat_priv *bat_priv,
-                            unsigned char *packet_buff, int packet_len,
-                            struct hard_iface *if_incoming, int own_packet,
-                            unsigned long send_time)
-{
-        /**
-         * _aggr -> pointer to the packet we want to aggregate with
-         * _pos -> pointer to the position in the queue
-         */
-        struct forw_packet *forw_packet_aggr = NULL, *forw_packet_pos = NULL;
-        struct hlist_node *tmp_node;
-        struct batman_packet *batman_packet =
-                (struct batman_packet *)packet_buff;
-        bool direct_link = batman_packet->flags & DIRECTLINK ? 1 : 0;
-
-        /* find position for the packet in the forward queue */
-        spin_lock_bh(&bat_priv->forw_bat_list_lock);
-        /* own packets are not to be aggregated */
-        if ((atomic_read(&bat_priv->aggregated_ogms)) && (!own_packet)) {
-                hlist_for_each_entry(forw_packet_pos, tmp_node,
-                                     &bat_priv->forw_bat_list, list) {
-                        if (can_aggregate_with(batman_packet,
-                                               bat_priv,
-                                               packet_len,
-                                               send_time,
-                                               direct_link,
-                                               if_incoming,
-                                               forw_packet_pos)) {
-                                forw_packet_aggr = forw_packet_pos;
-                                break;
-                        }
-                }
-        }
-
-        /* nothing to aggregate with - either aggregation disabled or no
-         * suitable aggregation packet found */
-        if (!forw_packet_aggr) {
-                /* the following section can run without the lock */
-                spin_unlock_bh(&bat_priv->forw_bat_list_lock);
-
-                /**
-                 * if we could not aggregate this packet with one of the others
-                 * we hold it back for a while, so that it might be aggregated
-                 * later on
-                 */
-                if ((!own_packet) &&
-                    (atomic_read(&bat_priv->aggregated_ogms)))
-                        send_time += msecs_to_jiffies(MAX_AGGREGATION_MS);
-
-                new_aggregated_packet(packet_buff, packet_len,
-                                      send_time, direct_link,
-                                      if_incoming, own_packet);
-        } else {
-                aggregate(forw_packet_aggr,
-                          packet_buff, packet_len,
-                          direct_link);
-                spin_unlock_bh(&bat_priv->forw_bat_list_lock);
-        }
-}
-
-/* unpack the aggregated packets and process them one by one */
-void receive_aggr_bat_packet(const struct ethhdr *ethhdr,
-                             unsigned char *packet_buff, int packet_len,
-                             struct hard_iface *if_incoming)
-{
-        struct batman_packet *batman_packet;
-        int buff_pos = 0;
-        unsigned char *tt_buff;
-
-        batman_packet = (struct batman_packet *)packet_buff;
-
-        do {
-                /* network to host order for our 32bit seqno and the
-                   orig_interval */
-                batman_packet->seqno = ntohl(batman_packet->seqno);
-                batman_packet->tt_crc = ntohs(batman_packet->tt_crc);
-
-                tt_buff = packet_buff + buff_pos + BAT_PACKET_LEN;
-
-                receive_bat_packet(ethhdr, batman_packet, tt_buff, if_incoming);
-
-                buff_pos += BAT_PACKET_LEN +
-                        tt_len(batman_packet->tt_num_changes);
-
-                batman_packet = (struct batman_packet *)
-                        (packet_buff + buff_pos);
-        } while (aggregated_packet(buff_pos, packet_len,
-                                   batman_packet->tt_num_changes));
-}
diff --git a/net/batman-adv/aggregation.h b/net/batman-adv/aggregation.h
deleted file mode 100644
index 216337bb841f..000000000000
--- a/net/batman-adv/aggregation.h
+++ /dev/null
@@ -1,46 +0,0 @@
-/*
- * Copyright (C) 2007-2011 B.A.T.M.A.N. contributors:
- *
- * Marek Lindner, Simon Wunderlich
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of version 2 of the GNU General Public
- * License as published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
- * 02110-1301, USA
- *
- */
-
-#ifndef _NET_BATMAN_ADV_AGGREGATION_H_
-#define _NET_BATMAN_ADV_AGGREGATION_H_
-
-#include "main.h"
-
-/* is there another aggregated packet here? */
-static inline int aggregated_packet(int buff_pos, int packet_len,
-                                    int tt_num_changes)
-{
-        int next_buff_pos = buff_pos + BAT_PACKET_LEN + (tt_num_changes *
-                                                sizeof(struct tt_change));
-
-        return (next_buff_pos <= packet_len) &&
-                (next_buff_pos <= MAX_AGGREGATION_BYTES);
-}
-
-void add_bat_packet_to_list(struct bat_priv *bat_priv,
-                            unsigned char *packet_buff, int packet_len,
-                            struct hard_iface *if_incoming, int own_packet,
-                            unsigned long send_time);
-void receive_aggr_bat_packet(const struct ethhdr *ethhdr,
-                             unsigned char *packet_buff, int packet_len,
-                             struct hard_iface *if_incoming);
-
-#endif /* _NET_BATMAN_ADV_AGGREGATION_H_ */
diff --git a/net/batman-adv/bat_iv_ogm.c b/net/batman-adv/bat_iv_ogm.c
new file mode 100644
index 000000000000..3512e251545b
--- /dev/null
+++ b/net/batman-adv/bat_iv_ogm.c
@@ -0,0 +1,1170 @@
+/*
+ * Copyright (C) 2007-2011 B.A.T.M.A.N. contributors:
+ *
+ * Marek Lindner, Simon Wunderlich
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of version 2 of the GNU General Public
+ * License as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301, USA
+ *
+ */
+
+#include "main.h"
+#include "bat_ogm.h"
+#include "translation-table.h"
+#include "ring_buffer.h"
+#include "originator.h"
+#include "routing.h"
+#include "gateway_common.h"
+#include "gateway_client.h"
+#include "hard-interface.h"
+#include "send.h"
+
+void bat_ogm_init(struct hard_iface *hard_iface)
+{
+        struct batman_ogm_packet *batman_ogm_packet;
+
+        hard_iface->packet_len = BATMAN_OGM_LEN;
+        hard_iface->packet_buff = kmalloc(hard_iface->packet_len, GFP_ATOMIC);
+
+        batman_ogm_packet = (struct batman_ogm_packet *)hard_iface->packet_buff;
+        batman_ogm_packet->packet_type = BAT_OGM;
+        batman_ogm_packet->version = COMPAT_VERSION;
+        batman_ogm_packet->flags = NO_FLAGS;
+        batman_ogm_packet->ttl = 2;
+        batman_ogm_packet->tq = TQ_MAX_VALUE;
+        batman_ogm_packet->tt_num_changes = 0;
+        batman_ogm_packet->ttvn = 0;
+}
+
+void bat_ogm_init_primary(struct hard_iface *hard_iface)
+{
+        struct batman_ogm_packet *batman_ogm_packet;
+
+        batman_ogm_packet = (struct batman_ogm_packet *)hard_iface->packet_buff;
+        batman_ogm_packet->flags = PRIMARIES_FIRST_HOP;
+        batman_ogm_packet->ttl = TTL;
+}
+
+void bat_ogm_update_mac(struct hard_iface *hard_iface)
+{
+        struct batman_ogm_packet *batman_ogm_packet;
+
+        batman_ogm_packet = (struct batman_ogm_packet *)hard_iface->packet_buff;
+        memcpy(batman_ogm_packet->orig,
+               hard_iface->net_dev->dev_addr, ETH_ALEN);
+        memcpy(batman_ogm_packet->prev_sender,
+               hard_iface->net_dev->dev_addr, ETH_ALEN);
+}
+
+/* when do we schedule our own ogm to be sent */
+static unsigned long bat_ogm_emit_send_time(const struct bat_priv *bat_priv)
+{
+        return jiffies + msecs_to_jiffies(
+                   atomic_read(&bat_priv->orig_interval) -
+                   JITTER + (random32() % 2*JITTER));
+}
+
+/* when do we schedule a ogm packet to be sent */
+static unsigned long bat_ogm_fwd_send_time(void)
+{
+        return jiffies + msecs_to_jiffies(random32() % (JITTER/2));
+}
+
+/* apply hop penalty for a normal link */
+static uint8_t hop_penalty(uint8_t tq, const struct bat_priv *bat_priv)
+{
+        int hop_penalty = atomic_read(&bat_priv->hop_penalty);
+        return (tq * (TQ_MAX_VALUE - hop_penalty)) / (TQ_MAX_VALUE);
+}
+
+/* is there another aggregated packet here? */
+static int bat_ogm_aggr_packet(int buff_pos, int packet_len,
+                               int tt_num_changes)
+{
+        int next_buff_pos = buff_pos + BATMAN_OGM_LEN + tt_len(tt_num_changes);
+
+        return (next_buff_pos <= packet_len) &&
+                (next_buff_pos <= MAX_AGGREGATION_BYTES);
+}
+
+/* send a batman ogm to a given interface */
+static void bat_ogm_send_to_if(struct forw_packet *forw_packet,
+                               struct hard_iface *hard_iface)
+{
+        struct bat_priv *bat_priv = netdev_priv(hard_iface->soft_iface);
+        char *fwd_str;
+        uint8_t packet_num;
+        int16_t buff_pos;
+        struct batman_ogm_packet *batman_ogm_packet;
+        struct sk_buff *skb;
+
+        if (hard_iface->if_status != IF_ACTIVE)
+                return;
+
+        packet_num = 0;
+        buff_pos = 0;
+        batman_ogm_packet = (struct batman_ogm_packet *)forw_packet->skb->data;
+
+        /* adjust all flags and log packets */
+        while (bat_ogm_aggr_packet(buff_pos, forw_packet->packet_len,
+                                   batman_ogm_packet->tt_num_changes)) {
+
+                /* we might have aggregated direct link packets with an
+                 * ordinary base packet */
+                if ((forw_packet->direct_link_flags & (1 << packet_num)) &&
+                    (forw_packet->if_incoming == hard_iface))
+                        batman_ogm_packet->flags |= DIRECTLINK;
+                else
+                        batman_ogm_packet->flags &= ~DIRECTLINK;
+
+                fwd_str = (packet_num > 0 ? "Forwarding" : (forw_packet->own ?
+                                                            "Sending own" :
+                                                            "Forwarding"));
+                bat_dbg(DBG_BATMAN, bat_priv,
+                        "%s %spacket (originator %pM, seqno %d, TQ %d, TTL %d,"
+                        " IDF %s, ttvn %d) on interface %s [%pM]\n",
+                        fwd_str, (packet_num > 0 ? "aggregated " : ""),
+                        batman_ogm_packet->orig,
+                        ntohl(batman_ogm_packet->seqno),
+                        batman_ogm_packet->tq, batman_ogm_packet->ttl,
+                        (batman_ogm_packet->flags & DIRECTLINK ?
+                         "on" : "off"),
+                        batman_ogm_packet->ttvn, hard_iface->net_dev->name,
+                        hard_iface->net_dev->dev_addr);
+
+                buff_pos += BATMAN_OGM_LEN +
+                                tt_len(batman_ogm_packet->tt_num_changes);
+                packet_num++;
+                batman_ogm_packet = (struct batman_ogm_packet *)
+                                        (forw_packet->skb->data + buff_pos);
+        }
+
+        /* create clone because function is called more than once */
+        skb = skb_clone(forw_packet->skb, GFP_ATOMIC);
+        if (skb)
+                send_skb_packet(skb, hard_iface, broadcast_addr);
+}
+
+/* send a batman ogm packet */
+void bat_ogm_emit(struct forw_packet *forw_packet)
+{
+        struct hard_iface *hard_iface;
+        struct net_device *soft_iface;
+        struct bat_priv *bat_priv;
+        struct hard_iface *primary_if = NULL;
+        struct batman_ogm_packet *batman_ogm_packet;
+        unsigned char directlink;
+
+        batman_ogm_packet = (struct batman_ogm_packet *)
+                                                (forw_packet->skb->data);
+        directlink = (batman_ogm_packet->flags & DIRECTLINK ? 1 : 0);
+
+        if (!forw_packet->if_incoming) {
+                pr_err("Error - can't forward packet: incoming iface not "
+                       "specified\n");
+                goto out;
+        }
+
+        soft_iface = forw_packet->if_incoming->soft_iface;
+        bat_priv = netdev_priv(soft_iface);
+
+        if (forw_packet->if_incoming->if_status != IF_ACTIVE)
+                goto out;
+
+        primary_if = primary_if_get_selected(bat_priv);
+        if (!primary_if)
+                goto out;
+
+        /* multihomed peer assumed */
+        /* non-primary OGMs are only broadcasted on their interface */
+        if ((directlink && (batman_ogm_packet->ttl == 1)) ||
+            (forw_packet->own && (forw_packet->if_incoming != primary_if))) {
+
+                /* FIXME: what about aggregated packets ? */
+                bat_dbg(DBG_BATMAN, bat_priv,
+                        "%s packet (originator %pM, seqno %d, TTL %d) "
+                        "on interface %s [%pM]\n",
+                        (forw_packet->own ? "Sending own" : "Forwarding"),
+                        batman_ogm_packet->orig,
+                        ntohl(batman_ogm_packet->seqno),
+                        batman_ogm_packet->ttl,
+                        forw_packet->if_incoming->net_dev->name,
+                        forw_packet->if_incoming->net_dev->dev_addr);
+
+                /* skb is only used once and than forw_packet is free'd */
+                send_skb_packet(forw_packet->skb, forw_packet->if_incoming,
+                                broadcast_addr);
+                forw_packet->skb = NULL;
+
+                goto out;
+        }
+
+        /* broadcast on every interface */
+        rcu_read_lock();
+        list_for_each_entry_rcu(hard_iface, &hardif_list, list) {
+                if (hard_iface->soft_iface != soft_iface)
+                        continue;
+
+                bat_ogm_send_to_if(forw_packet, hard_iface);
+        }
+        rcu_read_unlock();
+
+out:
+        if (primary_if)
+                hardif_free_ref(primary_if);
+}
+
+/* return true if new_packet can be aggregated with forw_packet */
+static bool bat_ogm_can_aggregate(const struct batman_ogm_packet
+                                                        *new_batman_ogm_packet,
+                                  struct bat_priv *bat_priv,
+                                  int packet_len, unsigned long send_time,
+                                  bool directlink,
+                                  const struct hard_iface *if_incoming,
+                                  const struct forw_packet *forw_packet)
+{
+        struct batman_ogm_packet *batman_ogm_packet;
+        int aggregated_bytes = forw_packet->packet_len + packet_len;
+        struct hard_iface *primary_if = NULL;
+        bool res = false;
+
+        batman_ogm_packet = (struct batman_ogm_packet *)forw_packet->skb->data;
+
+        /**
+         * we can aggregate the current packet to this aggregated packet
+         * if:
+         *
+         * - the send time is within our MAX_AGGREGATION_MS time
+         * - the resulting packet wont be bigger than
+         *   MAX_AGGREGATION_BYTES
+         */
+
+        if (time_before(send_time, forw_packet->send_time) &&
+            time_after_eq(send_time + msecs_to_jiffies(MAX_AGGREGATION_MS),
+                                        forw_packet->send_time) &&
+            (aggregated_bytes <= MAX_AGGREGATION_BYTES)) {
+
+                /**
+                 * check aggregation compatibility
+                 * -> direct link packets are broadcasted on
+                 *    their interface only
+                 * -> aggregate packet if the current packet is
+                 *    a "global" packet as well as the base
+                 *    packet
+                 */
+
+                primary_if = primary_if_get_selected(bat_priv);
+                if (!primary_if)
+                        goto out;
+
+                /* packets without direct link flag and high TTL
+                 * are flooded through the net  */
+                if ((!directlink) &&
+                    (!(batman_ogm_packet->flags & DIRECTLINK)) &&
+                    (batman_ogm_packet->ttl != 1) &&
+
+                    /* own packets originating non-primary
+                     * interfaces leave only that interface */
+                    ((!forw_packet->own) ||
+                     (forw_packet->if_incoming == primary_if))) {
+                        res = true;
+                        goto out;
+                }
+
+                /* if the incoming packet is sent via this one
+                 * interface only - we still can aggregate */
+                if ((directlink) &&
+                    (new_batman_ogm_packet->ttl == 1) &&
+                    (forw_packet->if_incoming == if_incoming) &&
+
+                    /* packets from direct neighbors or
+                     * own secondary interface packets
+                     * (= secondary interface packets in general) */
+                    (batman_ogm_packet->flags & DIRECTLINK ||
+                     (forw_packet->own &&
+                      forw_packet->if_incoming != primary_if))) {
+                        res = true;
+                        goto out;
+                }
+        }
+
+out:
+        if (primary_if)
+                hardif_free_ref(primary_if);
+        return res;
+}
+
+/* create a new aggregated packet and add this packet to it */
+static void bat_ogm_aggregate_new(const unsigned char *packet_buff,
+                                  int packet_len, unsigned long send_time,
+                                  bool direct_link,
+                                  struct hard_iface *if_incoming,
+                                  int own_packet)
+{
+        struct bat_priv *bat_priv = netdev_priv(if_incoming->soft_iface);
+        struct forw_packet *forw_packet_aggr;
+        unsigned char *skb_buff;
+
+        if (!atomic_inc_not_zero(&if_incoming->refcount))
+                return;
+
+        /* own packet should always be scheduled */
+        if (!own_packet) {
+                if (!atomic_dec_not_zero(&bat_priv->batman_queue_left)) {
+                        bat_dbg(DBG_BATMAN, bat_priv,
+                                "batman packet queue full\n");
+                        goto out;
+                }
+        }
+
+        forw_packet_aggr = kmalloc(sizeof(*forw_packet_aggr), GFP_ATOMIC);
+        if (!forw_packet_aggr) {
+                if (!own_packet)
+                        atomic_inc(&bat_priv->batman_queue_left);
+                goto out;
+        }
+
+        if ((atomic_read(&bat_priv->aggregated_ogms)) &&
+            (packet_len < MAX_AGGREGATION_BYTES))
+                forw_packet_aggr->skb = dev_alloc_skb(MAX_AGGREGATION_BYTES +
+                                                      sizeof(struct ethhdr));
+        else
+                forw_packet_aggr->skb = dev_alloc_skb(packet_len +
+                                                      sizeof(struct ethhdr));
+
+        if (!forw_packet_aggr->skb) {
+                if (!own_packet)
+                        atomic_inc(&bat_priv->batman_queue_left);
+                kfree(forw_packet_aggr);
+                goto out;
+        }
+        skb_reserve(forw_packet_aggr->skb, sizeof(struct ethhdr));
+
+        INIT_HLIST_NODE(&forw_packet_aggr->list);
+
+        skb_buff = skb_put(forw_packet_aggr->skb, packet_len);
+        forw_packet_aggr->packet_len = packet_len;
+        memcpy(skb_buff, packet_buff, packet_len);
+
+        forw_packet_aggr->own = own_packet;
+        forw_packet_aggr->if_incoming = if_incoming;
+        forw_packet_aggr->num_packets = 0;
+        forw_packet_aggr->direct_link_flags = NO_FLAGS;
+        forw_packet_aggr->send_time = send_time;
+
+        /* save packet direct link flag status */
+        if (direct_link)
+                forw_packet_aggr->direct_link_flags |= 1;
+
+        /* add new packet to packet list */
+        spin_lock_bh(&bat_priv->forw_bat_list_lock);
+        hlist_add_head(&forw_packet_aggr->list, &bat_priv->forw_bat_list);
+        spin_unlock_bh(&bat_priv->forw_bat_list_lock);
+
+        /* start timer for this packet */
+        INIT_DELAYED_WORK(&forw_packet_aggr->delayed_work,
+                          send_outstanding_bat_ogm_packet);
+        queue_delayed_work(bat_event_workqueue,
+                           &forw_packet_aggr->delayed_work,
+                           send_time - jiffies);
+
+        return;
+out:
+        hardif_free_ref(if_incoming);
+}
+
+/* aggregate a new packet into the existing ogm packet */
+static void bat_ogm_aggregate(struct forw_packet *forw_packet_aggr,
+                              const unsigned char *packet_buff,
+                              int packet_len, bool direct_link)
+{
+        unsigned char *skb_buff;
+
+        skb_buff = skb_put(forw_packet_aggr->skb, packet_len);
+        memcpy(skb_buff, packet_buff, packet_len);
+        forw_packet_aggr->packet_len += packet_len;
+        forw_packet_aggr->num_packets++;
+
+        /* save packet direct link flag status */
+        if (direct_link)
+                forw_packet_aggr->direct_link_flags |=
+                        (1 << forw_packet_aggr->num_packets);
+}
+
+static void bat_ogm_queue_add(struct bat_priv *bat_priv,
+                              unsigned char *packet_buff,
+                              int packet_len, struct hard_iface *if_incoming,
+                              int own_packet, unsigned long send_time)
+{
+        /**
+         * _aggr -> pointer to the packet we want to aggregate with
+         * _pos -> pointer to the position in the queue
+         */
+        struct forw_packet *forw_packet_aggr = NULL, *forw_packet_pos = NULL;
+        struct hlist_node *tmp_node;
+        struct batman_ogm_packet *batman_ogm_packet;
+        bool direct_link;
+
+        batman_ogm_packet = (struct batman_ogm_packet *)packet_buff;
+        direct_link = batman_ogm_packet->flags & DIRECTLINK ? 1 : 0;
+
+        /* find position for the packet in the forward queue */
+        spin_lock_bh(&bat_priv->forw_bat_list_lock);
+        /* own packets are not to be aggregated */
+        if ((atomic_read(&bat_priv->aggregated_ogms)) && (!own_packet)) {
+                hlist_for_each_entry(forw_packet_pos, tmp_node,
+                                     &bat_priv->forw_bat_list, list) {
+                        if (bat_ogm_can_aggregate(batman_ogm_packet,
+                                                  bat_priv, packet_len,
+                                                  send_time, direct_link,
+                                                  if_incoming,
+                                                  forw_packet_pos)) {
+                                forw_packet_aggr = forw_packet_pos;
+                                break;
+                        }
+                }
+        }
+
+        /* nothing to aggregate with - either aggregation disabled or no
+         * suitable aggregation packet found */
+        if (!forw_packet_aggr) {
+                /* the following section can run without the lock */
+                spin_unlock_bh(&bat_priv->forw_bat_list_lock);
+
+                /**
+                 * if we could not aggregate this packet with one of the others
+                 * we hold it back for a while, so that it might be aggregated
+                 * later on
+                 */
+                if ((!own_packet) &&
+                    (atomic_read(&bat_priv->aggregated_ogms)))
+                        send_time += msecs_to_jiffies(MAX_AGGREGATION_MS);
+
+                bat_ogm_aggregate_new(packet_buff, packet_len,
+                                      send_time, direct_link,
+                                      if_incoming, own_packet);
+        } else {
+                bat_ogm_aggregate(forw_packet_aggr, packet_buff, packet_len,
+                                  direct_link);
+                spin_unlock_bh(&bat_priv->forw_bat_list_lock);
+        }
+}
+
+static void bat_ogm_forward(struct orig_node *orig_node,
+                            const struct ethhdr *ethhdr,
+                            struct batman_ogm_packet *batman_ogm_packet,
+                            int directlink, struct hard_iface *if_incoming)
+{
+        struct bat_priv *bat_priv = netdev_priv(if_incoming->soft_iface);
+        struct neigh_node *router;
+        uint8_t in_tq, in_ttl, tq_avg = 0;
+        uint8_t tt_num_changes;
+
+        if (batman_ogm_packet->ttl <= 1) {
+                bat_dbg(DBG_BATMAN, bat_priv, "ttl exceeded\n");
+                return;
+        }
+
+        router = orig_node_get_router(orig_node);
+
+        in_tq = batman_ogm_packet->tq;
+        in_ttl = batman_ogm_packet->ttl;
+        tt_num_changes = batman_ogm_packet->tt_num_changes;
+
+        batman_ogm_packet->ttl--;
+        memcpy(batman_ogm_packet->prev_sender, ethhdr->h_source, ETH_ALEN);
+
+        /* rebroadcast tq of our best ranking neighbor to ensure the rebroadcast
+         * of our best tq value */
+        if (router && router->tq_avg != 0) {
+
+                /* rebroadcast ogm of best ranking neighbor as is */
+                if (!compare_eth(router->addr, ethhdr->h_source)) {
+                        batman_ogm_packet->tq = router->tq_avg;
+
+                        if (router->last_ttl)
+                                batman_ogm_packet->ttl = router->last_ttl - 1;
+                }
+
+                tq_avg = router->tq_avg;
+        }
+
+        if (router)
+                neigh_node_free_ref(router);
+
+        /* apply hop penalty */
+        batman_ogm_packet->tq = hop_penalty(batman_ogm_packet->tq, bat_priv);
+
+        bat_dbg(DBG_BATMAN, bat_priv,
+                "Forwarding packet: tq_orig: %i, tq_avg: %i, "
+                "tq_forw: %i, ttl_orig: %i, ttl_forw: %i\n",
+                in_tq, tq_avg, batman_ogm_packet->tq, in_ttl - 1,
+                batman_ogm_packet->ttl);
+
+        batman_ogm_packet->seqno = htonl(batman_ogm_packet->seqno);
+        batman_ogm_packet->tt_crc = htons(batman_ogm_packet->tt_crc);
+
+        /* switch of primaries first hop flag when forwarding */
+        batman_ogm_packet->flags &= ~PRIMARIES_FIRST_HOP;
+        if (directlink)
+                batman_ogm_packet->flags |= DIRECTLINK;
+        else
+                batman_ogm_packet->flags &= ~DIRECTLINK;
+
+        bat_ogm_queue_add(bat_priv, (unsigned char *)batman_ogm_packet,
+                          BATMAN_OGM_LEN + tt_len(tt_num_changes),
+                          if_incoming, 0, bat_ogm_fwd_send_time());
+}
+
+void bat_ogm_schedule(struct hard_iface *hard_iface, int tt_num_changes)
+{
+        struct bat_priv *bat_priv = netdev_priv(hard_iface->soft_iface);
+        struct batman_ogm_packet *batman_ogm_packet;
+        struct hard_iface *primary_if;
+        int vis_server;
+
+        vis_server = atomic_read(&bat_priv->vis_mode);
+        primary_if = primary_if_get_selected(bat_priv);
+
+        batman_ogm_packet = (struct batman_ogm_packet *)hard_iface->packet_buff;
+
+        /* change sequence number to network order */
+        batman_ogm_packet->seqno =
+                        htonl((uint32_t)atomic_read(&hard_iface->seqno));
+
+        batman_ogm_packet->ttvn = atomic_read(&bat_priv->ttvn);
+        batman_ogm_packet->tt_crc = htons((uint16_t)
+                                                atomic_read(&bat_priv->tt_crc));
+        if (tt_num_changes >= 0)
+                batman_ogm_packet->tt_num_changes = tt_num_changes;
+
+        if (vis_server == VIS_TYPE_SERVER_SYNC)
+                batman_ogm_packet->flags |= VIS_SERVER;
+        else
+                batman_ogm_packet->flags &= ~VIS_SERVER;
+
+        if ((hard_iface == primary_if) &&
+            (atomic_read(&bat_priv->gw_mode) == GW_MODE_SERVER))
+                batman_ogm_packet->gw_flags =
+                                (uint8_t)atomic_read(&bat_priv->gw_bandwidth);
+        else
+                batman_ogm_packet->gw_flags = NO_FLAGS;
+
+        atomic_inc(&hard_iface->seqno);
+
+        slide_own_bcast_window(hard_iface);
+        bat_ogm_queue_add(bat_priv, hard_iface->packet_buff,
+                          hard_iface->packet_len, hard_iface, 1,
+                          bat_ogm_emit_send_time(bat_priv));
+
+        if (primary_if)
+                hardif_free_ref(primary_if);
+}
+
+static void bat_ogm_orig_update(struct bat_priv *bat_priv,
+                                struct orig_node *orig_node,
+                                const struct ethhdr *ethhdr,
+                                const struct batman_ogm_packet
+                                                        *batman_ogm_packet,
+                                struct hard_iface *if_incoming,
+                                const unsigned char *tt_buff, int is_duplicate)
+{
+        struct neigh_node *neigh_node = NULL, *tmp_neigh_node = NULL;
+        struct neigh_node *router = NULL;
+        struct orig_node *orig_node_tmp;
+        struct hlist_node *node;
+        uint8_t bcast_own_sum_orig, bcast_own_sum_neigh;
+
+        bat_dbg(DBG_BATMAN, bat_priv, "update_originator(): "
+                "Searching and updating originator entry of received packet\n");
+
+        rcu_read_lock();
+        hlist_for_each_entry_rcu(tmp_neigh_node, node,
+                                 &orig_node->neigh_list, list) {
+                if (compare_eth(tmp_neigh_node->addr, ethhdr->h_source) &&
+                    (tmp_neigh_node->if_incoming == if_incoming) &&
+                     atomic_inc_not_zero(&tmp_neigh_node->refcount)) {
+                        if (neigh_node)
+                                neigh_node_free_ref(neigh_node);
+                        neigh_node = tmp_neigh_node;
+                        continue;
+                }
+
+                if (is_duplicate)
+                        continue;
+
+                spin_lock_bh(&tmp_neigh_node->tq_lock);
+                ring_buffer_set(tmp_neigh_node->tq_recv,
+                                &tmp_neigh_node->tq_index, 0);
+                tmp_neigh_node->tq_avg =
+                        ring_buffer_avg(tmp_neigh_node->tq_recv);
+                spin_unlock_bh(&tmp_neigh_node->tq_lock);
+        }
+
+        if (!neigh_node) {
+                struct orig_node *orig_tmp;
+
+                orig_tmp = get_orig_node(bat_priv, ethhdr->h_source);
+                if (!orig_tmp)
+                        goto unlock;
+
+                neigh_node = create_neighbor(orig_node, orig_tmp,
+                                             ethhdr->h_source, if_incoming);
+
+                orig_node_free_ref(orig_tmp);
+                if (!neigh_node)
+                        goto unlock;
+        } else
+                bat_dbg(DBG_BATMAN, bat_priv,
+                        "Updating existing last-hop neighbor of originator\n");
+
+        rcu_read_unlock();
+
+        orig_node->flags = batman_ogm_packet->flags;
+        neigh_node->last_valid = jiffies;
+
+        spin_lock_bh(&neigh_node->tq_lock);
+        ring_buffer_set(neigh_node->tq_recv,
+                        &neigh_node->tq_index,
+                        batman_ogm_packet->tq);
+        neigh_node->tq_avg = ring_buffer_avg(neigh_node->tq_recv);
+        spin_unlock_bh(&neigh_node->tq_lock);
+
+        if (!is_duplicate) {
+                orig_node->last_ttl = batman_ogm_packet->ttl;
+                neigh_node->last_ttl = batman_ogm_packet->ttl;
+        }
+
+        bonding_candidate_add(orig_node, neigh_node);
+
+        /* if this neighbor already is our next hop there is nothing
+         * to change */
+        router = orig_node_get_router(orig_node);
+        if (router == neigh_node)
+                goto update_tt;
+
+        /* if this neighbor does not offer a better TQ we won't consider it */
+        if (router && (router->tq_avg > neigh_node->tq_avg))
+                goto update_tt;
+
+        /* if the TQ is the same and the link not more symmetric we
+         * won't consider it either */
+        if (router && (neigh_node->tq_avg == router->tq_avg)) {
+                orig_node_tmp = router->orig_node;
+                spin_lock_bh(&orig_node_tmp->ogm_cnt_lock);
+                bcast_own_sum_orig =
+                        orig_node_tmp->bcast_own_sum[if_incoming->if_num];
+                spin_unlock_bh(&orig_node_tmp->ogm_cnt_lock);
+
+                orig_node_tmp = neigh_node->orig_node;
+                spin_lock_bh(&orig_node_tmp->ogm_cnt_lock);
+                bcast_own_sum_neigh =
+                        orig_node_tmp->bcast_own_sum[if_incoming->if_num];
+                spin_unlock_bh(&orig_node_tmp->ogm_cnt_lock);
+
+                if (bcast_own_sum_orig >= bcast_own_sum_neigh)
+                        goto update_tt;
+        }
+
+        update_route(bat_priv, orig_node, neigh_node);
+
+update_tt:
+        /* I have to check for transtable changes only if the OGM has been
+         * sent through a primary interface */
+        if (((batman_ogm_packet->orig != ethhdr->h_source) &&
+             (batman_ogm_packet->ttl > 2)) ||
+            (batman_ogm_packet->flags & PRIMARIES_FIRST_HOP))
+                tt_update_orig(bat_priv, orig_node, tt_buff,
+                               batman_ogm_packet->tt_num_changes,
+                               batman_ogm_packet->ttvn,
+                               batman_ogm_packet->tt_crc);
+
+        if (orig_node->gw_flags != batman_ogm_packet->gw_flags)
+                gw_node_update(bat_priv, orig_node,
+                               batman_ogm_packet->gw_flags);
+
+        orig_node->gw_flags = batman_ogm_packet->gw_flags;
+
+        /* restart gateway selection if fast or late switching was enabled */
+        if ((orig_node->gw_flags) &&
+            (atomic_read(&bat_priv->gw_mode) == GW_MODE_CLIENT) &&
+            (atomic_read(&bat_priv->gw_sel_class) > 2))
+                gw_check_election(bat_priv, orig_node);
+
+        goto out;
+
+unlock:
+        rcu_read_unlock();
+out:
+        if (neigh_node)
+                neigh_node_free_ref(neigh_node);
+        if (router)
+                neigh_node_free_ref(router);
+}
+
+static int bat_ogm_calc_tq(struct orig_node *orig_node,
+                           struct orig_node *orig_neigh_node,
+                           struct batman_ogm_packet *batman_ogm_packet,
+                           struct hard_iface *if_incoming)
+{
+        struct bat_priv *bat_priv = netdev_priv(if_incoming->soft_iface);
+        struct neigh_node *neigh_node = NULL, *tmp_neigh_node;
+        struct hlist_node *node;
+        uint8_t total_count;
+        uint8_t orig_eq_count, neigh_rq_count, tq_own;
+        int tq_asym_penalty, ret = 0;
+
+        /* find corresponding one hop neighbor */
+        rcu_read_lock();
+        hlist_for_each_entry_rcu(tmp_neigh_node, node,
+                                 &orig_neigh_node->neigh_list, list) {
+
+                if (!compare_eth(tmp_neigh_node->addr, orig_neigh_node->orig))
+                        continue;
+
+                if (tmp_neigh_node->if_incoming != if_incoming)
+                        continue;
+
+                if (!atomic_inc_not_zero(&tmp_neigh_node->refcount))
+                        continue;
+
+                neigh_node = tmp_neigh_node;
+                break;
+        }
+        rcu_read_unlock();
+
+        if (!neigh_node)
+                neigh_node = create_neighbor(orig_neigh_node,
+                                             orig_neigh_node,
+                                             orig_neigh_node->orig,
+                                             if_incoming);
+
+        if (!neigh_node)
+                goto out;
+
+        /* if orig_node is direct neighbor update neigh_node last_valid */
+        if (orig_node == orig_neigh_node)
+                neigh_node->last_valid = jiffies;
+
+        orig_node->last_valid = jiffies;
+
+        /* find packet count of corresponding one hop neighbor */
+        spin_lock_bh(&orig_node->ogm_cnt_lock);
+        orig_eq_count = orig_neigh_node->bcast_own_sum[if_incoming->if_num];
+        neigh_rq_count = neigh_node->real_packet_count;
+        spin_unlock_bh(&orig_node->ogm_cnt_lock);
+
+        /* pay attention to not get a value bigger than 100 % */
+        total_count = (orig_eq_count > neigh_rq_count ?
+                       neigh_rq_count : orig_eq_count);
+
+        /* if we have too few packets (too less data) we set tq_own to zero */
+        /* if we receive too few packets it is not considered bidirectional */
+        if ((total_count < TQ_LOCAL_BIDRECT_SEND_MINIMUM) ||
+            (neigh_rq_count < TQ_LOCAL_BIDRECT_RECV_MINIMUM))
+                tq_own = 0;
+        else
+                /* neigh_node->real_packet_count is never zero as we
+                 * only purge old information when getting new
+                 * information */
+                tq_own = (TQ_MAX_VALUE * total_count) / neigh_rq_count;
+
+        /*
+         * 1 - ((1-x) ** 3), normalized to TQ_MAX_VALUE this does
+         * affect the nearly-symmetric links only a little, but
+         * punishes asymmetric links more.  This will give a value
+         * between 0 and TQ_MAX_VALUE
+         */
+        tq_asym_penalty = TQ_MAX_VALUE - (TQ_MAX_VALUE *
+                                (TQ_LOCAL_WINDOW_SIZE - neigh_rq_count) *
+                                (TQ_LOCAL_WINDOW_SIZE - neigh_rq_count) *
+                                (TQ_LOCAL_WINDOW_SIZE - neigh_rq_count)) /
+                                        (TQ_LOCAL_WINDOW_SIZE *
+                                         TQ_LOCAL_WINDOW_SIZE *
+                                         TQ_LOCAL_WINDOW_SIZE);
+
+        batman_ogm_packet->tq = ((batman_ogm_packet->tq * tq_own
+                                                        * tq_asym_penalty) /
+                                                (TQ_MAX_VALUE * TQ_MAX_VALUE));
+
+        bat_dbg(DBG_BATMAN, bat_priv,
+                "bidirectional: "
+                "orig = %-15pM neigh = %-15pM => own_bcast = %2i, "
+                "real recv = %2i, local tq: %3i, asym_penalty: %3i, "
+                "total tq: %3i\n",
+                orig_node->orig, orig_neigh_node->orig, total_count,
+                neigh_rq_count, tq_own, tq_asym_penalty, batman_ogm_packet->tq);
+
+        /* if link has the minimum required transmission quality
+         * consider it bidirectional */
+        if (batman_ogm_packet->tq >= TQ_TOTAL_BIDRECT_LIMIT)
+                ret = 1;
+
+out:
+        if (neigh_node)
+                neigh_node_free_ref(neigh_node);
+        return ret;
+}
+
+/* processes a batman packet for all interfaces, adjusts the sequence number and
+ * finds out whether it is a duplicate.
+ * returns:
+ *   1 the packet is a duplicate
+ *   0 the packet has not yet been received
+ *  -1 the packet is old and has been received while the seqno window
+ *     was protected. Caller should drop it.
+ */
+static int bat_ogm_update_seqnos(const struct ethhdr *ethhdr,
+                                 const struct batman_ogm_packet
+                                                        *batman_ogm_packet,
+                                 const struct hard_iface *if_incoming)
+{
+        struct bat_priv *bat_priv = netdev_priv(if_incoming->soft_iface);
+        struct orig_node *orig_node;
+        struct neigh_node *tmp_neigh_node;
+        struct hlist_node *node;
+        int is_duplicate = 0;
+        int32_t seq_diff;
+        int need_update = 0;
+        int set_mark, ret = -1;
+
+        orig_node = get_orig_node(bat_priv, batman_ogm_packet->orig);
+        if (!orig_node)
+                return 0;
+
+        spin_lock_bh(&orig_node->ogm_cnt_lock);
+        seq_diff = batman_ogm_packet->seqno - orig_node->last_real_seqno;
+
+        /* signalize caller that the packet is to be dropped. */
+        if (window_protected(bat_priv, seq_diff,
+                             &orig_node->batman_seqno_reset))
+                goto out;
+
+        rcu_read_lock();
+        hlist_for_each_entry_rcu(tmp_neigh_node, node,
+                                 &orig_node->neigh_list, list) {
+
+                is_duplicate |= get_bit_status(tmp_neigh_node->real_bits,
+                                               orig_node->last_real_seqno,
+                                               batman_ogm_packet->seqno);
+
+                if (compare_eth(tmp_neigh_node->addr, ethhdr->h_source) &&
+                    (tmp_neigh_node->if_incoming == if_incoming))
+                        set_mark = 1;
+                else
+                        set_mark = 0;
+
+                /* if the window moved, set the update flag. */
+                need_update |= bit_get_packet(bat_priv,
+                                              tmp_neigh_node->real_bits,
+                                              seq_diff, set_mark);
+
+                tmp_neigh_node->real_packet_count =
+                        bit_packet_count(tmp_neigh_node->real_bits);
+        }
+        rcu_read_unlock();
+
+        if (need_update) {
+                bat_dbg(DBG_BATMAN, bat_priv,
+                        "updating last_seqno: old %d, new %d\n",
+                        orig_node->last_real_seqno, batman_ogm_packet->seqno);
+                orig_node->last_real_seqno = batman_ogm_packet->seqno;
+        }
+
+        ret = is_duplicate;
+
+out:
+        spin_unlock_bh(&orig_node->ogm_cnt_lock);
+        orig_node_free_ref(orig_node);
+        return ret;
+}
+
+static void bat_ogm_process(const struct ethhdr *ethhdr,
+                            struct batman_ogm_packet *batman_ogm_packet,
+                            const unsigned char *tt_buff,
+                            struct hard_iface *if_incoming)
+{
+        struct bat_priv *bat_priv = netdev_priv(if_incoming->soft_iface);
+        struct hard_iface *hard_iface;
+        struct orig_node *orig_neigh_node, *orig_node;
+        struct neigh_node *router = NULL, *router_router = NULL;
+        struct neigh_node *orig_neigh_router = NULL;
+        int has_directlink_flag;
+        int is_my_addr = 0, is_my_orig = 0, is_my_oldorig = 0;
+        int is_broadcast = 0, is_bidirectional, is_single_hop_neigh;
+        int is_duplicate;
+        uint32_t if_incoming_seqno;
+
+        /* Silently drop when the batman packet is actually not a
+         * correct packet.
+         *
+         * This might happen if a packet is padded (e.g. Ethernet has a
+         * minimum frame length of 64 byte) and the aggregation interprets
+         * it as an additional length.
+         *
+         * TODO: A more sane solution would be to have a bit in the
+         * batman_ogm_packet to detect whether the packet is the last
+         * packet in an aggregation.  Here we expect that the padding
+         * is always zero (or not 0x01)
+         */
+        if (batman_ogm_packet->packet_type != BAT_OGM)
+                return;
+
+        /* could be changed by schedule_own_packet() */
+        if_incoming_seqno = atomic_read(&if_incoming->seqno);
+
+        has_directlink_flag = (batman_ogm_packet->flags & DIRECTLINK ? 1 : 0);
+
+        is_single_hop_neigh = (compare_eth(ethhdr->h_source,
+                                           batman_ogm_packet->orig) ? 1 : 0);
+
+        bat_dbg(DBG_BATMAN, bat_priv,
+                "Received BATMAN packet via NB: %pM, IF: %s [%pM] "
+                "(from OG: %pM, via prev OG: %pM, seqno %d, ttvn %u, "
+                "crc %u, changes %u, td %d, TTL %d, V %d, IDF %d)\n",
+                ethhdr->h_source, if_incoming->net_dev->name,
+                if_incoming->net_dev->dev_addr, batman_ogm_packet->orig,
+                batman_ogm_packet->prev_sender, batman_ogm_packet->seqno,
+                batman_ogm_packet->ttvn, batman_ogm_packet->tt_crc,
+                batman_ogm_packet->tt_num_changes, batman_ogm_packet->tq,
+                batman_ogm_packet->ttl, batman_ogm_packet->version,
+                has_directlink_flag);
+
+        rcu_read_lock();
+        list_for_each_entry_rcu(hard_iface, &hardif_list, list) {
+                if (hard_iface->if_status != IF_ACTIVE)
+                        continue;
+
+                if (hard_iface->soft_iface != if_incoming->soft_iface)
+                        continue;
+
+                if (compare_eth(ethhdr->h_source,
+                                hard_iface->net_dev->dev_addr))
+                        is_my_addr = 1;
+
+                if (compare_eth(batman_ogm_packet->orig,
+                                hard_iface->net_dev->dev_addr))
+                        is_my_orig = 1;
+
+                if (compare_eth(batman_ogm_packet->prev_sender,
+                                hard_iface->net_dev->dev_addr))
+                        is_my_oldorig = 1;
+
+                if (is_broadcast_ether_addr(ethhdr->h_source))
+                        is_broadcast = 1;
+        }
+        rcu_read_unlock();
+
+        if (batman_ogm_packet->version != COMPAT_VERSION) {
+                bat_dbg(DBG_BATMAN, bat_priv,
+                        "Drop packet: incompatible batman version (%i)\n",
+                        batman_ogm_packet->version);
+                return;
+        }
+
+        if (is_my_addr) {
+                bat_dbg(DBG_BATMAN, bat_priv,
+                        "Drop packet: received my own broadcast (sender: %pM"
+                        ")\n",
+                        ethhdr->h_source);
+                return;
+        }
+
+        if (is_broadcast) {
+                bat_dbg(DBG_BATMAN, bat_priv, "Drop packet: "
+                "ignoring all packets with broadcast source addr (sender: %pM"
+                ")\n", ethhdr->h_source);
+                return;
+        }
+
+        if (is_my_orig) {
+                unsigned long *word;
+                int offset;
+
+                orig_neigh_node = get_orig_node(bat_priv, ethhdr->h_source);
+                if (!orig_neigh_node)
+                        return;
+
+                /* neighbor has to indicate direct link and it has to
+                 * come via the corresponding interface */
+                /* save packet seqno for bidirectional check */
+                if (has_directlink_flag &&
+                    compare_eth(if_incoming->net_dev->dev_addr,
+                                batman_ogm_packet->orig)) {
+                        offset = if_incoming->if_num * NUM_WORDS;
+
+                        spin_lock_bh(&orig_neigh_node->ogm_cnt_lock);
+                        word = &(orig_neigh_node->bcast_own[offset]);
+                        bit_mark(word,
+                                 if_incoming_seqno -
+                                                batman_ogm_packet->seqno - 2);
+                        orig_neigh_node->bcast_own_sum[if_incoming->if_num] =
+                                bit_packet_count(word);
+                        spin_unlock_bh(&orig_neigh_node->ogm_cnt_lock);
+                }
+
+                bat_dbg(DBG_BATMAN, bat_priv, "Drop packet: "
+                        "originator packet from myself (via neighbor)\n");
+                orig_node_free_ref(orig_neigh_node);
+                return;
+        }
+
+        if (is_my_oldorig) {
+                bat_dbg(DBG_BATMAN, bat_priv,
+                        "Drop packet: ignoring all rebroadcast echos (sender: "
+                        "%pM)\n", ethhdr->h_source);
+                return;
+        }
+
+        orig_node = get_orig_node(bat_priv, batman_ogm_packet->orig);
+        if (!orig_node)
+                return;
+
+        is_duplicate = bat_ogm_update_seqnos(ethhdr, batman_ogm_packet,
+                                             if_incoming);
+
+        if (is_duplicate == -1) {
+                bat_dbg(DBG_BATMAN, bat_priv,
+                        "Drop packet: packet within seqno protection time "
+                        "(sender: %pM)\n", ethhdr->h_source);
+                goto out;
+        }
+
+        if (batman_ogm_packet->tq == 0) {
+                bat_dbg(DBG_BATMAN, bat_priv,
+                        "Drop packet: originator packet with tq equal 0\n");
+                goto out;
+        }
+
+        router = orig_node_get_router(orig_node);
+        if (router)
+                router_router = orig_node_get_router(router->orig_node);
+
+        /* avoid temporary routing loops */
+        if (router && router_router &&
+            (compare_eth(router->addr, batman_ogm_packet->prev_sender)) &&
+            !(compare_eth(batman_ogm_packet->orig,
+                          batman_ogm_packet->prev_sender)) &&
+            (compare_eth(router->addr, router_router->addr))) {
+                bat_dbg(DBG_BATMAN, bat_priv,
+                        "Drop packet: ignoring all rebroadcast packets that "
+                        "may make me loop (sender: %pM)\n", ethhdr->h_source);
+                goto out;
+        }
+
+        /* if sender is a direct neighbor the sender mac equals
+         * originator mac */
+        orig_neigh_node = (is_single_hop_neigh ?
+                           orig_node :
+                           get_orig_node(bat_priv, ethhdr->h_source));
+        if (!orig_neigh_node)
+                goto out;
+
+        orig_neigh_router = orig_node_get_router(orig_neigh_node);
+
+        /* drop packet if sender is not a direct neighbor and if we
+         * don't route towards it */
+        if (!is_single_hop_neigh && (!orig_neigh_router)) {
+                bat_dbg(DBG_BATMAN, bat_priv,
+                        "Drop packet: OGM via unknown neighbor!\n");
+                goto out_neigh;
+        }
+
+        is_bidirectional = bat_ogm_calc_tq(orig_node, orig_neigh_node,
+                                           batman_ogm_packet, if_incoming);
+
+        bonding_save_primary(orig_node, orig_neigh_node, batman_ogm_packet);
+
+        /* update ranking if it is not a duplicate or has the same
+         * seqno and similar ttl as the non-duplicate */
+        if (is_bidirectional &&
+            (!is_duplicate ||
+             ((orig_node->last_real_seqno == batman_ogm_packet->seqno) &&
+              (orig_node->last_ttl - 3 <= batman_ogm_packet->ttl))))
+                bat_ogm_orig_update(bat_priv, orig_node, ethhdr,
+                                    batman_ogm_packet, if_incoming,
+                                    tt_buff, is_duplicate);
+
+        /* is single hop (direct) neighbor */
+        if (is_single_hop_neigh) {
+
+                /* mark direct link on incoming interface */
+                bat_ogm_forward(orig_node, ethhdr, batman_ogm_packet,
+                                1, if_incoming);
+
+                bat_dbg(DBG_BATMAN, bat_priv, "Forwarding packet: "
+                        "rebroadcast neighbor packet with direct link flag\n");
+                goto out_neigh;
+        }
+
+        /* multihop originator */
+        if (!is_bidirectional) {
+                bat_dbg(DBG_BATMAN, bat_priv,
+                        "Drop packet: not received via bidirectional link\n");
+                goto out_neigh;
+        }
+
+        if (is_duplicate) {
+                bat_dbg(DBG_BATMAN, bat_priv,
+                        "Drop packet: duplicate packet received\n");
+                goto out_neigh;
+        }
+
+        bat_dbg(DBG_BATMAN, bat_priv,
+                "Forwarding packet: rebroadcast originator packet\n");
+        bat_ogm_forward(orig_node, ethhdr, batman_ogm_packet, 0, if_incoming);
+
+out_neigh:
+        if ((orig_neigh_node) && (!is_single_hop_neigh))
+                orig_node_free_ref(orig_neigh_node);
+out:
+        if (router)
+                neigh_node_free_ref(router);
+        if (router_router)
+                neigh_node_free_ref(router_router);
+        if (orig_neigh_router)
+                neigh_node_free_ref(orig_neigh_router);
+
+        orig_node_free_ref(orig_node);
+}
+
+void bat_ogm_receive(const struct ethhdr *ethhdr, unsigned char *packet_buff,
+                     int packet_len, struct hard_iface *if_incoming)
+{
+        struct batman_ogm_packet *batman_ogm_packet;
+        int buff_pos = 0;
+        unsigned char *tt_buff;
+
+        batman_ogm_packet = (struct batman_ogm_packet *)packet_buff;
+
+        /* unpack the aggregated packets and process them one by one */
+        do {
+                /* network to host order for our 32bit seqno and the
+                   orig_interval */
+                batman_ogm_packet->seqno = ntohl(batman_ogm_packet->seqno);
+                batman_ogm_packet->tt_crc = ntohs(batman_ogm_packet->tt_crc);
+
+                tt_buff = packet_buff + buff_pos + BATMAN_OGM_LEN;
+
+                bat_ogm_process(ethhdr, batman_ogm_packet,
+                                tt_buff, if_incoming);
+
+                buff_pos += BATMAN_OGM_LEN +
+                                tt_len(batman_ogm_packet->tt_num_changes);
+
+                batman_ogm_packet = (struct batman_ogm_packet *)
+                                                (packet_buff + buff_pos);
+        } while (bat_ogm_aggr_packet(buff_pos, packet_len,
+                                     batman_ogm_packet->tt_num_changes));
+}
diff --git a/net/batman-adv/bat_ogm.h b/net/batman-adv/bat_ogm.h
new file mode 100644
index 000000000000..69329c107e28
--- /dev/null
+++ b/net/batman-adv/bat_ogm.h
@@ -0,0 +1,35 @@
+/*
+ * Copyright (C) 2007-2011 B.A.T.M.A.N. contributors:
+ *
+ * Marek Lindner, Simon Wunderlich
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of version 2 of the GNU General Public
+ * License as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301, USA
+ *
+ */
+
+#ifndef _NET_BATMAN_ADV_OGM_H_
+#define _NET_BATMAN_ADV_OGM_H_
+
+#include "main.h"
+
+void bat_ogm_init(struct hard_iface *hard_iface);
+void bat_ogm_init_primary(struct hard_iface *hard_iface);
+void bat_ogm_update_mac(struct hard_iface *hard_iface);
+void bat_ogm_schedule(struct hard_iface *hard_iface, int tt_num_changes);
+void bat_ogm_emit(struct forw_packet *forw_packet);
+void bat_ogm_receive(const struct ethhdr *ethhdr, unsigned char *packet_buff,
+                     int packet_len, struct hard_iface *if_incoming);
+
+#endif /* _NET_BATMAN_ADV_OGM_H_ */
diff --git a/net/batman-adv/bat_sysfs.c b/net/batman-adv/bat_sysfs.c
index cd15deba60a1..b8a7414c3571 100644
--- a/net/batman-adv/bat_sysfs.c
+++ b/net/batman-adv/bat_sysfs.c
@@ -380,6 +380,7 @@ static ssize_t store_gw_bwidth(struct kobject *kobj, struct attribute *attr,
 BAT_ATTR_BOOL(aggregated_ogms, S_IRUGO | S_IWUSR, NULL);
 BAT_ATTR_BOOL(bonding, S_IRUGO | S_IWUSR, NULL);
 BAT_ATTR_BOOL(fragmentation, S_IRUGO | S_IWUSR, update_min_mtu);
+BAT_ATTR_BOOL(ap_isolation, S_IRUGO | S_IWUSR, NULL);
 static BAT_ATTR(vis_mode, S_IRUGO | S_IWUSR, show_vis_mode, store_vis_mode);
 static BAT_ATTR(gw_mode, S_IRUGO | S_IWUSR, show_gw_mode, store_gw_mode);
 BAT_ATTR_UINT(orig_interval, S_IRUGO | S_IWUSR, 2 * JITTER, INT_MAX, NULL);
@@ -396,6 +397,7 @@ static struct bat_attribute *mesh_attrs[] = {
         &bat_attr_aggregated_ogms,
         &bat_attr_bonding,
         &bat_attr_fragmentation,
+        &bat_attr_ap_isolation,
         &bat_attr_vis_mode,
         &bat_attr_gw_mode,
         &bat_attr_orig_interval,
diff --git a/net/batman-adv/bitarray.c b/net/batman-adv/bitarray.c
index c1f4bfc09cc3..0be9ff346fa0 100644
--- a/net/batman-adv/bitarray.c
+++ b/net/batman-adv/bitarray.c
@@ -97,12 +97,12 @@ static void bit_shift(unsigned long *seq_bits, int32_t n)
                         (seq_bits[i - word_num - 1] >>
                          (WORD_BIT_SIZE-word_offset));
                 /* and the upper part of the right half and shift it left to
-                 * it's position */
+                 * its position */
                 /* for our example that would be: word[0] = 9800 + 0076 =
                  * 9876 */
         }
-        /* now for our last word, i==word_num, we only have the it's "left"
-         * half. that's the 1000 word in our example.*/
+        /* now for our last word, i==word_num, we only have its "left" half.
+         * that's the 1000 word in our example.*/
 
         seq_bits[i] = (seq_bits[i - word_num] << word_offset);
 
diff --git a/net/batman-adv/gateway_client.c b/net/batman-adv/gateway_client.c
index 056180ef9e1a..619fb73b3b76 100644
--- a/net/batman-adv/gateway_client.c
+++ b/net/batman-adv/gateway_client.c
@@ -532,14 +532,14 @@ static bool is_type_dhcprequest(struct sk_buff *skb, int header_len)
         pkt_len -= header_len + DHCP_OPTIONS_OFFSET + 1;
 
         /* Access the dhcp option lists. Each entry is made up by:
-         * - octect 1: option type
-         * - octect 2: option data len (only if type != 255 and 0)
-         * - octect 3: option data */
+         * - octet 1: option type
+         * - octet 2: option data len (only if type != 255 and 0)
+         * - octet 3: option data */
         while (*p != 255 && !ret) {
-                /* p now points to the first octect: option type */
+                /* p now points to the first octet: option type */
                 if (*p == 53) {
                         /* type 53 is the message type option.
-                         * Jump the len octect and go to the data octect */
+                         * Jump the len octet and go to the data octet */
                         if (pkt_len < 2)
                                 goto out;
                         p += 2;
diff --git a/net/batman-adv/hard-interface.c b/net/batman-adv/hard-interface.c
index db7aacf1e095..7704df468e0b 100644
--- a/net/batman-adv/hard-interface.c
+++ b/net/batman-adv/hard-interface.c
@@ -28,6 +28,7 @@
 #include "bat_sysfs.h"
 #include "originator.h"
 #include "hash.h"
+#include "bat_ogm.h"
 
 #include <linux/if_arp.h>
 
@@ -131,7 +132,6 @@ static void primary_if_select(struct bat_priv *bat_priv,
                               struct hard_iface *new_hard_iface)
 {
         struct hard_iface *curr_hard_iface;
-        struct batman_packet *batman_packet;
 
         ASSERT_RTNL();
 
@@ -147,10 +147,7 @@ static void primary_if_select(struct bat_priv *bat_priv,
         if (!new_hard_iface)
                 return;
 
-        batman_packet = (struct batman_packet *)(new_hard_iface->packet_buff);
-        batman_packet->flags = PRIMARIES_FIRST_HOP;
-        batman_packet->ttl = TTL;
-
+        bat_ogm_init_primary(new_hard_iface);
         primary_if_update_addr(bat_priv);
 }
 
@@ -162,14 +159,6 @@ static bool hardif_is_iface_up(const struct hard_iface *hard_iface)
         return false;
 }
 
-static void update_mac_addresses(struct hard_iface *hard_iface)
-{
-        memcpy(((struct batman_packet *)(hard_iface->packet_buff))->orig,
-               hard_iface->net_dev->dev_addr, ETH_ALEN);
-        memcpy(((struct batman_packet *)(hard_iface->packet_buff))->prev_sender,
-               hard_iface->net_dev->dev_addr, ETH_ALEN);
-}
-
 static void check_known_mac_addr(const struct net_device *net_dev)
 {
         const struct hard_iface *hard_iface;
@@ -244,12 +233,12 @@ static void hardif_activate_interface(struct hard_iface *hard_iface)
 
         bat_priv = netdev_priv(hard_iface->soft_iface);
 
-        update_mac_addresses(hard_iface);
+        bat_ogm_update_mac(hard_iface);
         hard_iface->if_status = IF_TO_BE_ACTIVATED;
 
         /**
          * the first active interface becomes our primary interface or
-         * the next active interface after the old primay interface was removed
+         * the next active interface after the old primary interface was removed
          */
         primary_if = primary_if_get_selected(bat_priv);
         if (!primary_if)
@@ -283,7 +272,6 @@ int hardif_enable_interface(struct hard_iface *hard_iface,
                             const char *iface_name)
 {
         struct bat_priv *bat_priv;
-        struct batman_packet *batman_packet;
         struct net_device *soft_iface;
         int ret;
 
@@ -318,8 +306,8 @@ int hardif_enable_interface(struct hard_iface *hard_iface,
 
         hard_iface->soft_iface = soft_iface;
         bat_priv = netdev_priv(hard_iface->soft_iface);
-        hard_iface->packet_len = BAT_PACKET_LEN;
-        hard_iface->packet_buff = kmalloc(hard_iface->packet_len, GFP_ATOMIC);
+
+        bat_ogm_init(hard_iface);
 
         if (!hard_iface->packet_buff) {
                 bat_err(hard_iface->soft_iface, "Can't add interface packet "
@@ -328,15 +316,6 @@ int hardif_enable_interface(struct hard_iface *hard_iface,
                 goto err;
         }
 
-        batman_packet = (struct batman_packet *)(hard_iface->packet_buff);
-        batman_packet->packet_type = BAT_PACKET;
-        batman_packet->version = COMPAT_VERSION;
-        batman_packet->flags = NO_FLAGS;
-        batman_packet->ttl = 2;
-        batman_packet->tq = TQ_MAX_VALUE;
-        batman_packet->tt_num_changes = 0;
-        batman_packet->ttvn = 0;
-
         hard_iface->if_num = bat_priv->num_ifaces;
         bat_priv->num_ifaces++;
         hard_iface->if_status = IF_INACTIVE;
@@ -381,7 +360,7 @@ int hardif_enable_interface(struct hard_iface *hard_iface,
                         hard_iface->net_dev->name);
 
         /* begin scheduling originator messages on that interface */
-        schedule_own_packet(hard_iface);
+        schedule_bat_ogm(hard_iface);
 
 out:
         return 0;
@@ -455,11 +434,8 @@ static struct hard_iface *hardif_add_interface(struct net_device *net_dev)
         dev_hold(net_dev);
 
         hard_iface = kmalloc(sizeof(*hard_iface), GFP_ATOMIC);
-        if (!hard_iface) {
-                pr_err("Can't add interface (%s): out of memory\n",
-                       net_dev->name);
+        if (!hard_iface)
                 goto release_dev;
-        }
 
         ret = sysfs_add_hardif(&hard_iface->hardif_obj, net_dev);
         if (ret)
@@ -551,7 +527,7 @@ static int hard_if_event(struct notifier_block *this,
                         goto hardif_put;
 
                 check_known_mac_addr(hard_iface->net_dev);
-                update_mac_addresses(hard_iface);
+                bat_ogm_update_mac(hard_iface);
 
                 bat_priv = netdev_priv(hard_iface->soft_iface);
                 primary_if = primary_if_get_selected(bat_priv);
@@ -573,14 +549,14 @@ out:
         return NOTIFY_DONE;
 }
 
-/* receive a packet with the batman ethertype coming on a hard
+/* incoming packets with the batman ethertype received on any active hard
  * interface */
 static int batman_skb_recv(struct sk_buff *skb, struct net_device *dev,
                            struct packet_type *ptype,
                            struct net_device *orig_dev)
 {
         struct bat_priv *bat_priv;
-        struct batman_packet *batman_packet;
+        struct batman_ogm_packet *batman_ogm_packet;
         struct hard_iface *hard_iface;
         int ret;
 
@@ -612,22 +588,22 @@ static int batman_skb_recv(struct sk_buff *skb, struct net_device *dev,
         if (hard_iface->if_status != IF_ACTIVE)
                 goto err_free;
 
-        batman_packet = (struct batman_packet *)skb->data;
+        batman_ogm_packet = (struct batman_ogm_packet *)skb->data;
 
-        if (batman_packet->version != COMPAT_VERSION) {
+        if (batman_ogm_packet->version != COMPAT_VERSION) {
                 bat_dbg(DBG_BATMAN, bat_priv,
                         "Drop packet: incompatible batman version (%i)\n",
-                        batman_packet->version);
+                        batman_ogm_packet->version);
                 goto err_free;
         }
 
         /* all receive handlers return whether they received or reused
          * the supplied skb. if not, we have to free the skb. */
 
-        switch (batman_packet->packet_type) {
+        switch (batman_ogm_packet->packet_type) {
                 /* batman originator packet */
-        case BAT_PACKET:
-                ret = recv_bat_packet(skb, hard_iface);
+        case BAT_OGM:
+                ret = recv_bat_ogm_packet(skb, hard_iface);
                 break;
 
                 /* batman icmp packet */
@@ -681,6 +657,36 @@ err_out:
         return NET_RX_DROP;
 }
 
+/* This function returns true if the interface represented by ifindex is a
+ * 802.11 wireless device */
+bool is_wifi_iface(int ifindex)
+{
+        struct net_device *net_device = NULL;
+        bool ret = false;
+
+        if (ifindex == NULL_IFINDEX)
+                goto out;
+
+        net_device = dev_get_by_index(&init_net, ifindex);
+        if (!net_device)
+                goto out;
+
+#ifdef CONFIG_WIRELESS_EXT
+        /* pre-cfg80211 drivers have to implement WEXT, so it is possible to
+         * check for wireless_handlers != NULL */
+        if (net_device->wireless_handlers)
+                ret = true;
+        else
+#endif
+                /* cfg80211 drivers have to set ieee80211_ptr */
+                if (net_device->ieee80211_ptr)
+                        ret = true;
+out:
+        if (net_device)
+                dev_put(net_device);
+        return ret;
+}
+
 struct notifier_block hard_if_notifier = {
         .notifier_call = hard_if_event,
 };
diff --git a/net/batman-adv/hard-interface.h b/net/batman-adv/hard-interface.h
index 442eacbc9e3a..67f78d1a63b4 100644
--- a/net/batman-adv/hard-interface.h
+++ b/net/batman-adv/hard-interface.h
@@ -42,6 +42,7 @@ void hardif_remove_interfaces(void);
 int hardif_min_mtu(struct net_device *soft_iface);
 void update_min_mtu(struct net_device *soft_iface);
 void hardif_free_rcu(struct rcu_head *rcu);
+bool is_wifi_iface(int ifindex);
 
 static inline void hardif_free_ref(struct hard_iface *hard_iface)
 {
diff --git a/net/batman-adv/hash.h b/net/batman-adv/hash.h
index dd5c9fd7a905..d20aa71ba1e8 100644
--- a/net/batman-adv/hash.h
+++ b/net/batman-adv/hash.h
@@ -76,19 +76,30 @@ static inline void hash_delete(struct hashtable_t *hash,
         hash_destroy(hash);
 }
 
-/* adds data to the hashtable. returns 0 on success, -1 on error */
+/**
+ *      hash_add - adds data to the hashtable
+ *      @hash: storage hash table
+ *      @compare: callback to determine if 2 hash elements are identical
+ *      @choose: callback calculating the hash index
+ *      @data: data passed to the aforementioned callbacks as argument
+ *      @data_node: to be added element
+ *
+ *      Returns 0 on success, 1 if the element already is in the hash
+ *      and -1 on error.
+ */
+
 static inline int hash_add(struct hashtable_t *hash,
                            hashdata_compare_cb compare,
                            hashdata_choose_cb choose,
                            const void *data, struct hlist_node *data_node)
 {
-        int index;
+        int index, ret = -1;
         struct hlist_head *head;
         struct hlist_node *node;
         spinlock_t *list_lock; /* spinlock to protect write access */
 
         if (!hash)
-                goto err;
+                goto out;
 
         index = choose(data, hash->size);
         head = &hash->table[index];
@@ -99,6 +110,7 @@ static inline int hash_add(struct hashtable_t *hash,
                 if (!compare(node, data))
                         continue;
 
+                ret = 1;
                 goto err_unlock;
         }
         rcu_read_unlock();
@@ -108,12 +120,13 @@ static inline int hash_add(struct hashtable_t *hash,
         hlist_add_head_rcu(data_node, head);
         spin_unlock_bh(list_lock);
 
-        return 0;
+        ret = 0;
+        goto out;
 
 err_unlock:
         rcu_read_unlock();
-err:
-        return -1;
+out:
+        return ret;
 }
 
 /* removes data from hash, if found. returns pointer do data on success, so you
diff --git a/net/batman-adv/main.c b/net/batman-adv/main.c
index b0f9068ade57..fb87bdc2ce9b 100644
--- a/net/batman-adv/main.c
+++ b/net/batman-adv/main.c
@@ -107,7 +107,7 @@ int mesh_init(struct net_device *soft_iface)
         if (tt_init(bat_priv) < 1)
                 goto err;
 
-        tt_local_add(soft_iface, soft_iface->dev_addr);
+        tt_local_add(soft_iface, soft_iface->dev_addr, NULL_IFINDEX);
 
         if (vis_init(bat_priv) < 1)
                 goto err;
@@ -117,8 +117,6 @@ int mesh_init(struct net_device *soft_iface)
         goto end;
 
 err:
-        pr_err("Unable to allocate memory for mesh information structures: "
-               "out of mem ?\n");
         mesh_free(soft_iface);
         return -1;
 
diff --git a/net/batman-adv/main.h b/net/batman-adv/main.h
index a6df61a6933b..964ad4d8ba33 100644
--- a/net/batman-adv/main.h
+++ b/net/batman-adv/main.h
@@ -28,7 +28,7 @@
 #define DRIVER_DEVICE "batman-adv"
 
 #ifndef SOURCE_VERSION
-#define SOURCE_VERSION "2011.3.0"
+#define SOURCE_VERSION "2011.4.0"
 #endif
 
 /* B.A.T.M.A.N. parameters */
@@ -44,7 +44,7 @@
 #define PURGE_TIMEOUT 200
 #define TT_LOCAL_TIMEOUT 3600 /* in seconds */
 #define TT_CLIENT_ROAM_TIMEOUT 600
-/* sliding packet range of received originator messages in squence numbers
+/* sliding packet range of received originator messages in sequence numbers
  * (should be a multiple of our word size) */
 #define TQ_LOCAL_WINDOW_SIZE 64
 #define TT_REQUEST_TIMEOUT 3 /* seconds we have to keep pending tt_req */
@@ -62,6 +62,8 @@
 
 #define NO_FLAGS 0
 
+#define NULL_IFINDEX 0 /* dummy ifindex used to avoid iface checks */
+
 #define NUM_WORDS (TQ_LOCAL_WINDOW_SIZE / WORD_BIT_SIZE)
 
 #define LOG_BUF_LEN 8192          /* has to be a power of 2 */
@@ -133,7 +135,7 @@ enum dbg_level {
 #include <linux/mutex.h>        /* mutex */
 #include <linux/module.h>       /* needed by all modules */
 #include <linux/netdevice.h>    /* netdevice */
-#include <linux/etherdevice.h>  /* ethernet address classifaction */
+#include <linux/etherdevice.h>  /* ethernet address classification */
 #include <linux/if_ether.h>     /* ethernet header */
 #include <linux/poll.h>         /* poll_table */
 #include <linux/kthread.h>      /* kernel threads */
diff --git a/net/batman-adv/originator.c b/net/batman-adv/originator.c
index f3c3f620d195..0e5b77255d99 100644
--- a/net/batman-adv/originator.c
+++ b/net/batman-adv/originator.c
@@ -252,7 +252,7 @@ struct orig_node *get_orig_node(struct bat_priv *bat_priv, const uint8_t *addr)
 
         hash_added = hash_add(bat_priv->orig_hash, compare_orig,
                               choose_orig, orig_node, &orig_node->hash_entry);
-        if (hash_added < 0)
+        if (hash_added != 0)
                 goto free_bcast_own_sum;
 
         return orig_node;
@@ -336,8 +336,7 @@ static bool purge_orig_node(struct bat_priv *bat_priv,
         } else {
                 if (purge_orig_neighbors(bat_priv, orig_node,
                                                         &best_neigh_node)) {
-                        update_routes(bat_priv, orig_node,
-                                      best_neigh_node);
+                        update_route(bat_priv, orig_node, best_neigh_node);
                 }
         }
 
@@ -493,10 +492,8 @@ static int orig_node_add_if(struct orig_node *orig_node, int max_if_num)
 
         data_ptr = kmalloc(max_if_num * sizeof(unsigned long) * NUM_WORDS,
                            GFP_ATOMIC);
-        if (!data_ptr) {
-                pr_err("Can't resize orig: out of memory\n");
+        if (!data_ptr)
                 return -1;
-        }
 
         memcpy(data_ptr, orig_node->bcast_own,
                (max_if_num - 1) * sizeof(unsigned long) * NUM_WORDS);
@@ -504,10 +501,8 @@ static int orig_node_add_if(struct orig_node *orig_node, int max_if_num)
         orig_node->bcast_own = data_ptr;
 
         data_ptr = kmalloc(max_if_num * sizeof(uint8_t), GFP_ATOMIC);
-        if (!data_ptr) {
-                pr_err("Can't resize orig: out of memory\n");
+        if (!data_ptr)
                 return -1;
-        }
 
         memcpy(data_ptr, orig_node->bcast_own_sum,
                (max_if_num - 1) * sizeof(uint8_t));
@@ -562,10 +557,8 @@ static int orig_node_del_if(struct orig_node *orig_node,
 
         chunk_size = sizeof(unsigned long) * NUM_WORDS;
         data_ptr = kmalloc(max_if_num * chunk_size, GFP_ATOMIC);
-        if (!data_ptr) {
-                pr_err("Can't resize orig: out of memory\n");
+        if (!data_ptr)
                 return -1;
-        }
 
         /* copy first part */
         memcpy(data_ptr, orig_node->bcast_own, del_if_num * chunk_size);
@@ -583,10 +576,8 @@ free_bcast_own:
                 goto free_own_sum;
 
         data_ptr = kmalloc(max_if_num * sizeof(uint8_t), GFP_ATOMIC);
-        if (!data_ptr) {
-                pr_err("Can't resize orig: out of memory\n");
+        if (!data_ptr)
                 return -1;
-        }
 
         memcpy(data_ptr, orig_node->bcast_own_sum,
                del_if_num * sizeof(uint8_t));
diff --git a/net/batman-adv/packet.h b/net/batman-adv/packet.h
index b76b4be10b92..4d9e54c57a36 100644
--- a/net/batman-adv/packet.h
+++ b/net/batman-adv/packet.h
@@ -25,14 +25,14 @@
 #define ETH_P_BATMAN  0x4305    /* unofficial/not registered Ethertype */
 
 enum bat_packettype {
-        BAT_PACKET       = 0x01,
-        BAT_ICMP         = 0x02,
-        BAT_UNICAST      = 0x03,
-        BAT_BCAST        = 0x04,
-        BAT_VIS          = 0x05,
+        BAT_OGM          = 0x01,
+        BAT_ICMP         = 0x02,
+        BAT_UNICAST      = 0x03,
+        BAT_BCAST        = 0x04,
+        BAT_VIS          = 0x05,
         BAT_UNICAST_FRAG = 0x06,
-        BAT_TT_QUERY     = 0x07,
-        BAT_ROAM_ADV     = 0x08
+        BAT_TT_QUERY     = 0x07,
+        BAT_ROAM_ADV     = 0x08
 };
 
 /* this file is included by batctl which needs these defines */
@@ -84,12 +84,13 @@ enum tt_query_flags {
 enum tt_client_flags {
         TT_CLIENT_DEL     = 1 << 0,
         TT_CLIENT_ROAM    = 1 << 1,
+        TT_CLIENT_WIFI    = 1 << 2,
         TT_CLIENT_NOPURGE = 1 << 8,
         TT_CLIENT_NEW     = 1 << 9,
         TT_CLIENT_PENDING = 1 << 10
 };
 
-struct batman_packet {
+struct batman_ogm_packet {
         uint8_t  packet_type;
         uint8_t  version;  /* batman version field */
         uint8_t  ttl;
@@ -104,7 +105,7 @@ struct batman_packet {
         uint16_t tt_crc;
 } __packed;
 
-#define BAT_PACKET_LEN sizeof(struct batman_packet)
+#define BATMAN_OGM_LEN sizeof(struct batman_ogm_packet)
 
 struct icmp_packet {
         uint8_t  packet_type;
diff --git a/net/batman-adv/routing.c b/net/batman-adv/routing.c
index 0f32c818874d..f961cc5eade5 100644
--- a/net/batman-adv/routing.c
+++ b/net/batman-adv/routing.c
@@ -22,18 +22,14 @@
 #include "main.h"
 #include "routing.h"
 #include "send.h"
-#include "hash.h"
 #include "soft-interface.h"
 #include "hard-interface.h"
 #include "icmp_socket.h"
 #include "translation-table.h"
 #include "originator.h"
-#include "ring_buffer.h"
 #include "vis.h"
-#include "aggregation.h"
-#include "gateway_common.h"
-#include "gateway_client.h"
 #include "unicast.h"
+#include "bat_ogm.h"
 
 void slide_own_bcast_window(struct hard_iface *hard_iface)
 {
@@ -64,69 +60,9 @@ void slide_own_bcast_window(struct hard_iface *hard_iface)
         }
 }
 
-static void update_transtable(struct bat_priv *bat_priv,
-                              struct orig_node *orig_node,
-                              const unsigned char *tt_buff,
-                              uint8_t tt_num_changes, uint8_t ttvn,
-                              uint16_t tt_crc)
-{
-        uint8_t orig_ttvn = (uint8_t)atomic_read(&orig_node->last_ttvn);
-        bool full_table = true;
-
-        /* the ttvn increased by one -> we can apply the attached changes */
-        if (ttvn - orig_ttvn == 1) {
-                /* the OGM could not contain the changes because they were too
-                 * many to fit in one frame or because they have already been
-                 * sent TT_OGM_APPEND_MAX times. In this case send a tt
-                 * request */
-                if (!tt_num_changes) {
-                        full_table = false;
-                        goto request_table;
-                }
-
-                tt_update_changes(bat_priv, orig_node, tt_num_changes, ttvn,
-                                  (struct tt_change *)tt_buff);
-
-                /* Even if we received the crc into the OGM, we prefer
-                 * to recompute it to spot any possible inconsistency
-                 * in the global table */
-                orig_node->tt_crc = tt_global_crc(bat_priv, orig_node);
-
-                /* The ttvn alone is not enough to guarantee consistency
-                 * because a single value could repesent different states
-                 * (due to the wrap around). Thus a node has to check whether
-                 * the resulting table (after applying the changes) is still
-                 * consistent or not. E.g. a node could disconnect while its
-                 * ttvn is X and reconnect on ttvn = X + TTVN_MAX: in this case
-                 * checking the CRC value is mandatory to detect the
-                 * inconsistency */
-                if (orig_node->tt_crc != tt_crc)
-                        goto request_table;
-
-                /* Roaming phase is over: tables are in sync again. I can
-                 * unset the flag */
-                orig_node->tt_poss_change = false;
-        } else {
-                /* if we missed more than one change or our tables are not
-                 * in sync anymore -> request fresh tt data */
-                if (ttvn != orig_ttvn || orig_node->tt_crc != tt_crc) {
-request_table:
-                        bat_dbg(DBG_TT, bat_priv, "TT inconsistency for %pM. "
-                                "Need to retrieve the correct information "
-                                "(ttvn: %u last_ttvn: %u crc: %u last_crc: "
-                                "%u num_changes: %u)\n", orig_node->orig, ttvn,
-                                orig_ttvn, tt_crc, orig_node->tt_crc,
-                                tt_num_changes);
-                        send_tt_request(bat_priv, orig_node, ttvn, tt_crc,
-                                        full_table);
-                        return;
-                }
-        }
-}
-
-static void update_route(struct bat_priv *bat_priv,
-                         struct orig_node *orig_node,
-                         struct neigh_node *neigh_node)
+static void _update_route(struct bat_priv *bat_priv,
+                          struct orig_node *orig_node,
+                          struct neigh_node *neigh_node)
 {
         struct neigh_node *curr_router;
 
@@ -170,8 +106,8 @@ static void update_route(struct bat_priv *bat_priv,
                 neigh_node_free_ref(curr_router);
 }
 
-void update_routes(struct bat_priv *bat_priv, struct orig_node *orig_node,
-                   struct neigh_node *neigh_node)
+void update_route(struct bat_priv *bat_priv, struct orig_node *orig_node,
+                  struct neigh_node *neigh_node)
 {
         struct neigh_node *router = NULL;
 
@@ -181,116 +117,13 @@ void update_routes(struct bat_priv *bat_priv, struct orig_node *orig_node,
         router = orig_node_get_router(orig_node);
 
         if (router != neigh_node)
-                update_route(bat_priv, orig_node, neigh_node);
+                _update_route(bat_priv, orig_node, neigh_node);
 
 out:
         if (router)
                 neigh_node_free_ref(router);
 }
 
-static int is_bidirectional_neigh(struct orig_node *orig_node,
-                                struct orig_node *orig_neigh_node,
-                                struct batman_packet *batman_packet,
-                                struct hard_iface *if_incoming)
-{
-        struct bat_priv *bat_priv = netdev_priv(if_incoming->soft_iface);
-        struct neigh_node *neigh_node = NULL, *tmp_neigh_node;
-        struct hlist_node *node;
-        uint8_t total_count;
-        uint8_t orig_eq_count, neigh_rq_count, tq_own;
-        int tq_asym_penalty, ret = 0;
-
-        /* find corresponding one hop neighbor */
-        rcu_read_lock();
-        hlist_for_each_entry_rcu(tmp_neigh_node, node,
-                                 &orig_neigh_node->neigh_list, list) {
-
-                if (!compare_eth(tmp_neigh_node->addr, orig_neigh_node->orig))
-                        continue;
-
-                if (tmp_neigh_node->if_incoming != if_incoming)
-                        continue;
-
-                if (!atomic_inc_not_zero(&tmp_neigh_node->refcount))
-                        continue;
-
-                neigh_node = tmp_neigh_node;
-                break;
-        }
-        rcu_read_unlock();
-
-        if (!neigh_node)
-                neigh_node = create_neighbor(orig_neigh_node,
-                                             orig_neigh_node,
-                                             orig_neigh_node->orig,
-                                             if_incoming);
-
-        if (!neigh_node)
-                goto out;
-
-        /* if orig_node is direct neighbour update neigh_node last_valid */
-        if (orig_node == orig_neigh_node)
-                neigh_node->last_valid = jiffies;
-
-        orig_node->last_valid = jiffies;
-
-        /* find packet count of corresponding one hop neighbor */
-        spin_lock_bh(&orig_node->ogm_cnt_lock);
-        orig_eq_count = orig_neigh_node->bcast_own_sum[if_incoming->if_num];
-        neigh_rq_count = neigh_node->real_packet_count;
-        spin_unlock_bh(&orig_node->ogm_cnt_lock);
-
-        /* pay attention to not get a value bigger than 100 % */
-        total_count = (orig_eq_count > neigh_rq_count ?
-                       neigh_rq_count : orig_eq_count);
-
-        /* if we have too few packets (too less data) we set tq_own to zero */
-        /* if we receive too few packets it is not considered bidirectional */
-        if ((total_count < TQ_LOCAL_BIDRECT_SEND_MINIMUM) ||
-            (neigh_rq_count < TQ_LOCAL_BIDRECT_RECV_MINIMUM))
-                tq_own = 0;
-        else
-                /* neigh_node->real_packet_count is never zero as we
-                 * only purge old information when getting new
-                 * information */
-                tq_own = (TQ_MAX_VALUE * total_count) / neigh_rq_count;
-
-        /*
-         * 1 - ((1-x) ** 3), normalized to TQ_MAX_VALUE this does
-         * affect the nearly-symmetric links only a little, but
-         * punishes asymmetric links more.  This will give a value
-         * between 0 and TQ_MAX_VALUE
-         */
-        tq_asym_penalty = TQ_MAX_VALUE - (TQ_MAX_VALUE *
-                                (TQ_LOCAL_WINDOW_SIZE - neigh_rq_count) *
-                                (TQ_LOCAL_WINDOW_SIZE - neigh_rq_count) *
-                                (TQ_LOCAL_WINDOW_SIZE - neigh_rq_count)) /
-                                        (TQ_LOCAL_WINDOW_SIZE *
-                                         TQ_LOCAL_WINDOW_SIZE *
-                                         TQ_LOCAL_WINDOW_SIZE);
-
-        batman_packet->tq = ((batman_packet->tq * tq_own * tq_asym_penalty) /
-                                                (TQ_MAX_VALUE * TQ_MAX_VALUE));
-
-        bat_dbg(DBG_BATMAN, bat_priv,
-                "bidirectional: "
-                "orig = %-15pM neigh = %-15pM => own_bcast = %2i, "
-                "real recv = %2i, local tq: %3i, asym_penalty: %3i, "
-                "total tq: %3i\n",
-                orig_node->orig, orig_neigh_node->orig, total_count,
-                neigh_rq_count, tq_own, tq_asym_penalty, batman_packet->tq);
-
-        /* if link has the minimum required transmission quality
-         * consider it bidirectional */
-        if (batman_packet->tq >= TQ_TOTAL_BIDRECT_LIMIT)
-                ret = 1;
-
-out:
-        if (neigh_node)
-                neigh_node_free_ref(neigh_node);
-        return ret;
-}
-
 /* caller must hold the neigh_list_lock */
 void bonding_candidate_del(struct orig_node *orig_node,
                            struct neigh_node *neigh_node)
@@ -308,8 +141,8 @@ out:
         return;
 }
 
-static void bonding_candidate_add(struct orig_node *orig_node,
-                                  struct neigh_node *neigh_node)
+void bonding_candidate_add(struct orig_node *orig_node,
+                           struct neigh_node *neigh_node)
 {
         struct hlist_node *node;
         struct neigh_node *tmp_neigh_node, *router = NULL;
@@ -379,162 +212,23 @@ out:
 }
 
 /* copy primary address for bonding */
-static void bonding_save_primary(const struct orig_node *orig_node,
-                                 struct orig_node *orig_neigh_node,
-                                 const struct batman_packet *batman_packet)
+void bonding_save_primary(const struct orig_node *orig_node,
+                          struct orig_node *orig_neigh_node,
+                          const struct batman_ogm_packet *batman_ogm_packet)
 {
-        if (!(batman_packet->flags & PRIMARIES_FIRST_HOP))
+        if (!(batman_ogm_packet->flags & PRIMARIES_FIRST_HOP))
                 return;
 
         memcpy(orig_neigh_node->primary_addr, orig_node->orig, ETH_ALEN);
 }
 
-static void update_orig(struct bat_priv *bat_priv, struct orig_node *orig_node,
-                        const struct ethhdr *ethhdr,
-                        const struct batman_packet *batman_packet,
-                        struct hard_iface *if_incoming,
-                        const unsigned char *tt_buff, int is_duplicate)
-{
-        struct neigh_node *neigh_node = NULL, *tmp_neigh_node = NULL;
-        struct neigh_node *router = NULL;
-        struct orig_node *orig_node_tmp;
-        struct hlist_node *node;
-        uint8_t bcast_own_sum_orig, bcast_own_sum_neigh;
-
-        bat_dbg(DBG_BATMAN, bat_priv, "update_originator(): "
-                "Searching and updating originator entry of received packet\n");
-
-        rcu_read_lock();
-        hlist_for_each_entry_rcu(tmp_neigh_node, node,
-                                 &orig_node->neigh_list, list) {
-                if (compare_eth(tmp_neigh_node->addr, ethhdr->h_source) &&
-                    (tmp_neigh_node->if_incoming == if_incoming) &&
-                     atomic_inc_not_zero(&tmp_neigh_node->refcount)) {
-                        if (neigh_node)
-                                neigh_node_free_ref(neigh_node);
-                        neigh_node = tmp_neigh_node;
-                        continue;
-                }
-
-                if (is_duplicate)
-                        continue;
-
-                spin_lock_bh(&tmp_neigh_node->tq_lock);
-                ring_buffer_set(tmp_neigh_node->tq_recv,
-                                &tmp_neigh_node->tq_index, 0);
-                tmp_neigh_node->tq_avg =
-                        ring_buffer_avg(tmp_neigh_node->tq_recv);
-                spin_unlock_bh(&tmp_neigh_node->tq_lock);
-        }
-
-        if (!neigh_node) {
-                struct orig_node *orig_tmp;
-
-                orig_tmp = get_orig_node(bat_priv, ethhdr->h_source);
-                if (!orig_tmp)
-                        goto unlock;
-
-                neigh_node = create_neighbor(orig_node, orig_tmp,
-                                             ethhdr->h_source, if_incoming);
-
-                orig_node_free_ref(orig_tmp);
-                if (!neigh_node)
-                        goto unlock;
-        } else
-                bat_dbg(DBG_BATMAN, bat_priv,
-                        "Updating existing last-hop neighbor of originator\n");
-
-        rcu_read_unlock();
-
-        orig_node->flags = batman_packet->flags;
-        neigh_node->last_valid = jiffies;
-
-        spin_lock_bh(&neigh_node->tq_lock);
-        ring_buffer_set(neigh_node->tq_recv,
-                        &neigh_node->tq_index,
-                        batman_packet->tq);
-        neigh_node->tq_avg = ring_buffer_avg(neigh_node->tq_recv);
-        spin_unlock_bh(&neigh_node->tq_lock);
-
-        if (!is_duplicate) {
-                orig_node->last_ttl = batman_packet->ttl;
-                neigh_node->last_ttl = batman_packet->ttl;
-        }
-
-        bonding_candidate_add(orig_node, neigh_node);
-
-        /* if this neighbor already is our next hop there is nothing
-         * to change */
-        router = orig_node_get_router(orig_node);
-        if (router == neigh_node)
-                goto update_tt;
-
-        /* if this neighbor does not offer a better TQ we won't consider it */
-        if (router && (router->tq_avg > neigh_node->tq_avg))
-                goto update_tt;
-
-        /* if the TQ is the same and the link not more symetric we
-         * won't consider it either */
-        if (router && (neigh_node->tq_avg == router->tq_avg)) {
-                orig_node_tmp = router->orig_node;
-                spin_lock_bh(&orig_node_tmp->ogm_cnt_lock);
-                bcast_own_sum_orig =
-                        orig_node_tmp->bcast_own_sum[if_incoming->if_num];
-                spin_unlock_bh(&orig_node_tmp->ogm_cnt_lock);
-
-                orig_node_tmp = neigh_node->orig_node;
-                spin_lock_bh(&orig_node_tmp->ogm_cnt_lock);
-                bcast_own_sum_neigh =
-                        orig_node_tmp->bcast_own_sum[if_incoming->if_num];
-                spin_unlock_bh(&orig_node_tmp->ogm_cnt_lock);
-
-                if (bcast_own_sum_orig >= bcast_own_sum_neigh)
-                        goto update_tt;
-        }
-
-        update_routes(bat_priv, orig_node, neigh_node);
-
-update_tt:
-        /* I have to check for transtable changes only if the OGM has been
-         * sent through a primary interface */
-        if (((batman_packet->orig != ethhdr->h_source) &&
-                                (batman_packet->ttl > 2)) ||
-                                (batman_packet->flags & PRIMARIES_FIRST_HOP))
-                update_transtable(bat_priv, orig_node, tt_buff,
-                                  batman_packet->tt_num_changes,
-                                  batman_packet->ttvn,
-                                  batman_packet->tt_crc);
-
-        if (orig_node->gw_flags != batman_packet->gw_flags)
-                gw_node_update(bat_priv, orig_node, batman_packet->gw_flags);
-
-        orig_node->gw_flags = batman_packet->gw_flags;
-
-        /* restart gateway selection if fast or late switching was enabled */
-        if ((orig_node->gw_flags) &&
-            (atomic_read(&bat_priv->gw_mode) == GW_MODE_CLIENT) &&
-            (atomic_read(&bat_priv->gw_sel_class) > 2))
-                gw_check_election(bat_priv, orig_node);
-
-        goto out;
-
-unlock:
-        rcu_read_unlock();
-out:
-        if (neigh_node)
-                neigh_node_free_ref(neigh_node);
-        if (router)
-                neigh_node_free_ref(router);
-}
-
 /* checks whether the host restarted and is in the protection time.
  * returns:
  *  0 if the packet is to be accepted
  *  1 if the packet is to be ignored.
  */
-static int window_protected(struct bat_priv *bat_priv,
-                            int32_t seq_num_diff,
-                            unsigned long *last_reset)
+int window_protected(struct bat_priv *bat_priv, int32_t seq_num_diff,
+                     unsigned long *last_reset)
 {
         if ((seq_num_diff <= -TQ_LOCAL_WINDOW_SIZE)
                 || (seq_num_diff >= EXPECTED_SEQNO_RANGE)) {
@@ -552,330 +246,12 @@ static int window_protected(struct bat_priv *bat_priv,
         return 0;
 }
 
-/* processes a batman packet for all interfaces, adjusts the sequence number and
- * finds out whether it is a duplicate.
- * returns:
- *   1 the packet is a duplicate
- *   0 the packet has not yet been received
- *  -1 the packet is old and has been received while the seqno window
- *     was protected. Caller should drop it.
- */
-static int count_real_packets(const struct ethhdr *ethhdr,
-                               const struct batman_packet *batman_packet,
-                               const struct hard_iface *if_incoming)
-{
-        struct bat_priv *bat_priv = netdev_priv(if_incoming->soft_iface);
-        struct orig_node *orig_node;
-        struct neigh_node *tmp_neigh_node;
-        struct hlist_node *node;
-        int is_duplicate = 0;
-        int32_t seq_diff;
-        int need_update = 0;
-        int set_mark, ret = -1;
-
-        orig_node = get_orig_node(bat_priv, batman_packet->orig);
-        if (!orig_node)
-                return 0;
-
-        spin_lock_bh(&orig_node->ogm_cnt_lock);
-        seq_diff = batman_packet->seqno - orig_node->last_real_seqno;
-
-        /* signalize caller that the packet is to be dropped. */
-        if (window_protected(bat_priv, seq_diff,
-                             &orig_node->batman_seqno_reset))
-                goto out;
-
-        rcu_read_lock();
-        hlist_for_each_entry_rcu(tmp_neigh_node, node,
-                                 &orig_node->neigh_list, list) {
-
-                is_duplicate |= get_bit_status(tmp_neigh_node->real_bits,
-                                               orig_node->last_real_seqno,
-                                               batman_packet->seqno);
-
-                if (compare_eth(tmp_neigh_node->addr, ethhdr->h_source) &&
-                    (tmp_neigh_node->if_incoming == if_incoming))
-                        set_mark = 1;
-                else
-                        set_mark = 0;
-
-                /* if the window moved, set the update flag. */
-                need_update |= bit_get_packet(bat_priv,
-                                              tmp_neigh_node->real_bits,
-                                              seq_diff, set_mark);
-
-                tmp_neigh_node->real_packet_count =
-                        bit_packet_count(tmp_neigh_node->real_bits);
-        }
-        rcu_read_unlock();
-
-        if (need_update) {
-                bat_dbg(DBG_BATMAN, bat_priv,
-                        "updating last_seqno: old %d, new %d\n",
-                        orig_node->last_real_seqno, batman_packet->seqno);
-                orig_node->last_real_seqno = batman_packet->seqno;
-        }
-
-        ret = is_duplicate;
-
-out:
-        spin_unlock_bh(&orig_node->ogm_cnt_lock);
-        orig_node_free_ref(orig_node);
-        return ret;
-}
-
-void receive_bat_packet(const struct ethhdr *ethhdr,
-                        struct batman_packet *batman_packet,
-                        const unsigned char *tt_buff,
-                        struct hard_iface *if_incoming)
-{
-        struct bat_priv *bat_priv = netdev_priv(if_incoming->soft_iface);
-        struct hard_iface *hard_iface;
-        struct orig_node *orig_neigh_node, *orig_node;
-        struct neigh_node *router = NULL, *router_router = NULL;
-        struct neigh_node *orig_neigh_router = NULL;
-        int has_directlink_flag;
-        int is_my_addr = 0, is_my_orig = 0, is_my_oldorig = 0;
-        int is_broadcast = 0, is_bidirectional, is_single_hop_neigh;
-        int is_duplicate;
-        uint32_t if_incoming_seqno;
-
-        /* Silently drop when the batman packet is actually not a
-         * correct packet.
-         *
-         * This might happen if a packet is padded (e.g. Ethernet has a
-         * minimum frame length of 64 byte) and the aggregation interprets
-         * it as an additional length.
-         *
-         * TODO: A more sane solution would be to have a bit in the
-         * batman_packet to detect whether the packet is the last
-         * packet in an aggregation.  Here we expect that the padding
-         * is always zero (or not 0x01)
-         */
-        if (batman_packet->packet_type != BAT_PACKET)
-                return;
-
-        /* could be changed by schedule_own_packet() */
-        if_incoming_seqno = atomic_read(&if_incoming->seqno);
-
-        has_directlink_flag = (batman_packet->flags & DIRECTLINK ? 1 : 0);
-
-        is_single_hop_neigh = (compare_eth(ethhdr->h_source,
-                                           batman_packet->orig) ? 1 : 0);
-
-        bat_dbg(DBG_BATMAN, bat_priv,
-                "Received BATMAN packet via NB: %pM, IF: %s [%pM] "
-                "(from OG: %pM, via prev OG: %pM, seqno %d, ttvn %u, "
-                "crc %u, changes %u, td %d, TTL %d, V %d, IDF %d)\n",
-                ethhdr->h_source, if_incoming->net_dev->name,
-                if_incoming->net_dev->dev_addr, batman_packet->orig,
-                batman_packet->prev_sender, batman_packet->seqno,
-                batman_packet->ttvn, batman_packet->tt_crc,
-                batman_packet->tt_num_changes, batman_packet->tq,
-                batman_packet->ttl, batman_packet->version,
-                has_directlink_flag);
-
-        rcu_read_lock();
-        list_for_each_entry_rcu(hard_iface, &hardif_list, list) {
-                if (hard_iface->if_status != IF_ACTIVE)
-                        continue;
-
-                if (hard_iface->soft_iface != if_incoming->soft_iface)
-                        continue;
-
-                if (compare_eth(ethhdr->h_source,
-                                hard_iface->net_dev->dev_addr))
-                        is_my_addr = 1;
-
-                if (compare_eth(batman_packet->orig,
-                                hard_iface->net_dev->dev_addr))
-                        is_my_orig = 1;
-
-                if (compare_eth(batman_packet->prev_sender,
-                                hard_iface->net_dev->dev_addr))
-                        is_my_oldorig = 1;
-
-                if (is_broadcast_ether_addr(ethhdr->h_source))
-                        is_broadcast = 1;
-        }
-        rcu_read_unlock();
-
-        if (batman_packet->version != COMPAT_VERSION) {
-                bat_dbg(DBG_BATMAN, bat_priv,
-                        "Drop packet: incompatible batman version (%i)\n",
-                        batman_packet->version);
-                return;
-        }
-
-        if (is_my_addr) {
-                bat_dbg(DBG_BATMAN, bat_priv,
-                        "Drop packet: received my own broadcast (sender: %pM"
-                        ")\n",
-                        ethhdr->h_source);
-                return;
-        }
-
-        if (is_broadcast) {
-                bat_dbg(DBG_BATMAN, bat_priv, "Drop packet: "
-                "ignoring all packets with broadcast source addr (sender: %pM"
-                ")\n", ethhdr->h_source);
-                return;
-        }
-
-        if (is_my_orig) {
-                unsigned long *word;
-                int offset;
-
-                orig_neigh_node = get_orig_node(bat_priv, ethhdr->h_source);
-                if (!orig_neigh_node)
-                        return;
-
-                /* neighbor has to indicate direct link and it has to
-                 * come via the corresponding interface */
-                /* save packet seqno for bidirectional check */
-                if (has_directlink_flag &&
-                    compare_eth(if_incoming->net_dev->dev_addr,
-                                batman_packet->orig)) {
-                        offset = if_incoming->if_num * NUM_WORDS;
-
-                        spin_lock_bh(&orig_neigh_node->ogm_cnt_lock);
-                        word = &(orig_neigh_node->bcast_own[offset]);
-                        bit_mark(word,
-                                 if_incoming_seqno - batman_packet->seqno - 2);
-                        orig_neigh_node->bcast_own_sum[if_incoming->if_num] =
-                                bit_packet_count(word);
-                        spin_unlock_bh(&orig_neigh_node->ogm_cnt_lock);
-                }
-
-                bat_dbg(DBG_BATMAN, bat_priv, "Drop packet: "
-                        "originator packet from myself (via neighbor)\n");
-                orig_node_free_ref(orig_neigh_node);
-                return;
-        }
-
-        if (is_my_oldorig) {
-                bat_dbg(DBG_BATMAN, bat_priv,
-                        "Drop packet: ignoring all rebroadcast echos (sender: "
-                        "%pM)\n", ethhdr->h_source);
-                return;
-        }
-
-        orig_node = get_orig_node(bat_priv, batman_packet->orig);
-        if (!orig_node)
-                return;
-
-        is_duplicate = count_real_packets(ethhdr, batman_packet, if_incoming);
-
-        if (is_duplicate == -1) {
-                bat_dbg(DBG_BATMAN, bat_priv,
-                        "Drop packet: packet within seqno protection time "
-                        "(sender: %pM)\n", ethhdr->h_source);
-                goto out;
-        }
-
-        if (batman_packet->tq == 0) {
-                bat_dbg(DBG_BATMAN, bat_priv,
-                        "Drop packet: originator packet with tq equal 0\n");
-                goto out;
-        }
-
-        router = orig_node_get_router(orig_node);
-        if (router)
-                router_router = orig_node_get_router(router->orig_node);
-
-        /* avoid temporary routing loops */
-        if (router && router_router &&
-            (compare_eth(router->addr, batman_packet->prev_sender)) &&
-            !(compare_eth(batman_packet->orig, batman_packet->prev_sender)) &&
-            (compare_eth(router->addr, router_router->addr))) {
-                bat_dbg(DBG_BATMAN, bat_priv,
-                        "Drop packet: ignoring all rebroadcast packets that "
-                        "may make me loop (sender: %pM)\n", ethhdr->h_source);
-                goto out;
-        }
-
-        /* if sender is a direct neighbor the sender mac equals
-         * originator mac */
-        orig_neigh_node = (is_single_hop_neigh ?
-                           orig_node :
-                           get_orig_node(bat_priv, ethhdr->h_source));
-        if (!orig_neigh_node)
-                goto out;
-
-        orig_neigh_router = orig_node_get_router(orig_neigh_node);
-
-        /* drop packet if sender is not a direct neighbor and if we
-         * don't route towards it */
-        if (!is_single_hop_neigh && (!orig_neigh_router)) {
-                bat_dbg(DBG_BATMAN, bat_priv,
-                        "Drop packet: OGM via unknown neighbor!\n");
-                goto out_neigh;
-        }
-
-        is_bidirectional = is_bidirectional_neigh(orig_node, orig_neigh_node,
-                                                batman_packet, if_incoming);
-
-        bonding_save_primary(orig_node, orig_neigh_node, batman_packet);
-
-        /* update ranking if it is not a duplicate or has the same
-         * seqno and similar ttl as the non-duplicate */
-        if (is_bidirectional &&
-            (!is_duplicate ||
-             ((orig_node->last_real_seqno == batman_packet->seqno) &&
-              (orig_node->last_ttl - 3 <= batman_packet->ttl))))
-                update_orig(bat_priv, orig_node, ethhdr, batman_packet,
-                            if_incoming, tt_buff, is_duplicate);
-
-        /* is single hop (direct) neighbor */
-        if (is_single_hop_neigh) {
-
-                /* mark direct link on incoming interface */
-                schedule_forward_packet(orig_node, ethhdr, batman_packet,
-                                        1, if_incoming);
-
-                bat_dbg(DBG_BATMAN, bat_priv, "Forwarding packet: "
-                        "rebroadcast neighbor packet with direct link flag\n");
-                goto out_neigh;
-        }
-
-        /* multihop originator */
-        if (!is_bidirectional) {
-                bat_dbg(DBG_BATMAN, bat_priv,
-                        "Drop packet: not received via bidirectional link\n");
-                goto out_neigh;
-        }
-
-        if (is_duplicate) {
-                bat_dbg(DBG_BATMAN, bat_priv,
-                        "Drop packet: duplicate packet received\n");
-                goto out_neigh;
-        }
-
-        bat_dbg(DBG_BATMAN, bat_priv,
-                "Forwarding packet: rebroadcast originator packet\n");
-        schedule_forward_packet(orig_node, ethhdr, batman_packet,
-                                0, if_incoming);
-
-out_neigh:
-        if ((orig_neigh_node) && (!is_single_hop_neigh))
-                orig_node_free_ref(orig_neigh_node);
-out:
-        if (router)
-                neigh_node_free_ref(router);
-        if (router_router)
-                neigh_node_free_ref(router_router);
-        if (orig_neigh_router)
-                neigh_node_free_ref(orig_neigh_router);
-
-        orig_node_free_ref(orig_node);
-}
-
-int recv_bat_packet(struct sk_buff *skb, struct hard_iface *hard_iface)
+int recv_bat_ogm_packet(struct sk_buff *skb, struct hard_iface *hard_iface)
 {
         struct ethhdr *ethhdr;
 
         /* drop packet if it has not necessary minimum size */
-        if (unlikely(!pskb_may_pull(skb, sizeof(struct batman_packet))))
+        if (unlikely(!pskb_may_pull(skb, BATMAN_OGM_LEN)))
                 return NET_RX_DROP;
 
         ethhdr = (struct ethhdr *)skb_mac_header(skb);
@@ -898,10 +274,7 @@ int recv_bat_packet(struct sk_buff *skb, struct hard_iface *hard_iface)
 
         ethhdr = (struct ethhdr *)skb_mac_header(skb);
 
-        receive_aggr_bat_packet(ethhdr,
-                                skb->data,
-                                skb_headlen(skb),
-                                hard_iface);
+        bat_ogm_receive(ethhdr, skb->data, skb_headlen(skb), hard_iface);
 
         kfree_skb(skb);
         return NET_RX_SUCCESS;
@@ -1243,7 +616,7 @@ int recv_tt_query(struct sk_buff *skb, struct hard_iface *recv_if)
                 }
                 break;
         case TT_RESPONSE:
-                /* packet needs to be linearised to access the TT changes */
+                /* packet needs to be linearized to access the TT changes */
                 if (skb_linearize(skb) < 0)
                         goto out;
 
@@ -1300,7 +673,7 @@ int recv_roam_adv(struct sk_buff *skb, struct hard_iface *recv_if)
                 roam_adv_packet->client);
 
         tt_global_add(bat_priv, orig_node, roam_adv_packet->client,
-                      atomic_read(&orig_node->last_ttvn) + 1, true);
+                      atomic_read(&orig_node->last_ttvn) + 1, true, false);
 
         /* Roaming phase starts: I have new information but the ttvn has not
          * been incremented yet. This flag will make me check all the incoming
@@ -1536,7 +909,7 @@ static int check_unicast_ttvn(struct bat_priv *bat_priv,
 
                 ethhdr = (struct ethhdr *)(skb->data +
                         sizeof(struct unicast_packet));
-                orig_node = transtable_search(bat_priv, ethhdr->h_dest);
+                orig_node = transtable_search(bat_priv, NULL, ethhdr->h_dest);
 
                 if (!orig_node) {
                         if (!is_my_client(bat_priv, ethhdr->h_dest))
diff --git a/net/batman-adv/routing.h b/net/batman-adv/routing.h
index fb14e9579b19..7aaee0fb0fdc 100644
--- a/net/batman-adv/routing.h
+++ b/net/batman-adv/routing.h
@@ -23,19 +23,15 @@
 #define _NET_BATMAN_ADV_ROUTING_H_
 
 void slide_own_bcast_window(struct hard_iface *hard_iface);
-void receive_bat_packet(const struct ethhdr *ethhdr,
-                        struct batman_packet *batman_packet,
-                        const unsigned char *tt_buff,
-                        struct hard_iface *if_incoming);
-void update_routes(struct bat_priv *bat_priv, struct orig_node *orig_node,
-                   struct neigh_node *neigh_node);
+void update_route(struct bat_priv *bat_priv, struct orig_node *orig_node,
+                  struct neigh_node *neigh_node);
 int route_unicast_packet(struct sk_buff *skb, struct hard_iface *recv_if);
 int recv_icmp_packet(struct sk_buff *skb, struct hard_iface *recv_if);
 int recv_unicast_packet(struct sk_buff *skb, struct hard_iface *recv_if);
 int recv_ucast_frag_packet(struct sk_buff *skb, struct hard_iface *recv_if);
 int recv_bcast_packet(struct sk_buff *skb, struct hard_iface *recv_if);
 int recv_vis_packet(struct sk_buff *skb, struct hard_iface *recv_if);
-int recv_bat_packet(struct sk_buff *skb, struct hard_iface *recv_if);
+int recv_bat_ogm_packet(struct sk_buff *skb, struct hard_iface *recv_if);
 int recv_tt_query(struct sk_buff *skb, struct hard_iface *recv_if);
 int recv_roam_adv(struct sk_buff *skb, struct hard_iface *recv_if);
 struct neigh_node *find_router(struct bat_priv *bat_priv,
@@ -43,5 +39,12 @@ struct neigh_node *find_router(struct bat_priv *bat_priv,
                                const struct hard_iface *recv_if);
 void bonding_candidate_del(struct orig_node *orig_node,
                            struct neigh_node *neigh_node);
+void bonding_candidate_add(struct orig_node *orig_node,
+                           struct neigh_node *neigh_node);
+void bonding_save_primary(const struct orig_node *orig_node,
+                          struct orig_node *orig_neigh_node,
+                          const struct batman_ogm_packet *batman_ogm_packet);
+int window_protected(struct bat_priv *bat_priv, int32_t seq_num_diff,
+                     unsigned long *last_reset);
 
 #endif /* _NET_BATMAN_ADV_ROUTING_H_ */
diff --git a/net/batman-adv/send.c b/net/batman-adv/send.c
index 58d14472068c..8a684eb738ad 100644
--- a/net/batman-adv/send.c
+++ b/net/batman-adv/send.c
@@ -26,33 +26,12 @@
 #include "soft-interface.h"
 #include "hard-interface.h"
 #include "vis.h"
-#include "aggregation.h"
 #include "gateway_common.h"
 #include "originator.h"
+#include "bat_ogm.h"
 
 static void send_outstanding_bcast_packet(struct work_struct *work);
 
-/* apply hop penalty for a normal link */
-static uint8_t hop_penalty(uint8_t tq, const struct bat_priv *bat_priv)
-{
-        int hop_penalty = atomic_read(&bat_priv->hop_penalty);
-        return (tq * (TQ_MAX_VALUE - hop_penalty)) / (TQ_MAX_VALUE);
-}
-
-/* when do we schedule our own packet to be sent */
-static unsigned long own_send_time(const struct bat_priv *bat_priv)
-{
-        return jiffies + msecs_to_jiffies(
-                   atomic_read(&bat_priv->orig_interval) -
-                   JITTER + (random32() % 2*JITTER));
-}
-
-/* when do we schedule a forwarded packet to be sent */
-static unsigned long forward_send_time(void)
-{
-        return jiffies + msecs_to_jiffies(random32() % (JITTER/2));
-}
-
 /* send out an already prepared packet to the given address via the
  * specified batman interface */
 int send_skb_packet(struct sk_buff *skb, struct hard_iface *hard_iface,
@@ -99,141 +78,17 @@ send_skb_err:
         return NET_XMIT_DROP;
 }
 
-/* Send a packet to a given interface */
-static void send_packet_to_if(struct forw_packet *forw_packet,
-                              struct hard_iface *hard_iface)
-{
-        struct bat_priv *bat_priv = netdev_priv(hard_iface->soft_iface);
-        char *fwd_str;
-        uint8_t packet_num;
-        int16_t buff_pos;
-        struct batman_packet *batman_packet;
-        struct sk_buff *skb;
-
-        if (hard_iface->if_status != IF_ACTIVE)
-                return;
-
-        packet_num = 0;
-        buff_pos = 0;
-        batman_packet = (struct batman_packet *)forw_packet->skb->data;
-
-        /* adjust all flags and log packets */
-        while (aggregated_packet(buff_pos,
-                                 forw_packet->packet_len,
-                                 batman_packet->tt_num_changes)) {
-
-                /* we might have aggregated direct link packets with an
-                 * ordinary base packet */
-                if ((forw_packet->direct_link_flags & (1 << packet_num)) &&
-                    (forw_packet->if_incoming == hard_iface))
-                        batman_packet->flags |= DIRECTLINK;
-                else
-                        batman_packet->flags &= ~DIRECTLINK;
-
-                fwd_str = (packet_num > 0 ? "Forwarding" : (forw_packet->own ?
-                                                            "Sending own" :
-                                                            "Forwarding"));
-                bat_dbg(DBG_BATMAN, bat_priv,
-                        "%s %spacket (originator %pM, seqno %d, TQ %d, TTL %d,"
-                        " IDF %s, hvn %d) on interface %s [%pM]\n",
-                        fwd_str, (packet_num > 0 ? "aggregated " : ""),
-                        batman_packet->orig, ntohl(batman_packet->seqno),
-                        batman_packet->tq, batman_packet->ttl,
-                        (batman_packet->flags & DIRECTLINK ?
-                         "on" : "off"),
-                        batman_packet->ttvn, hard_iface->net_dev->name,
-                        hard_iface->net_dev->dev_addr);
-
-                buff_pos += sizeof(*batman_packet) +
-                        tt_len(batman_packet->tt_num_changes);
-                packet_num++;
-                batman_packet = (struct batman_packet *)
-                        (forw_packet->skb->data + buff_pos);
-        }
-
-        /* create clone because function is called more than once */
-        skb = skb_clone(forw_packet->skb, GFP_ATOMIC);
-        if (skb)
-                send_skb_packet(skb, hard_iface, broadcast_addr);
-}
-
-/* send a batman packet */
-static void send_packet(struct forw_packet *forw_packet)
-{
-        struct hard_iface *hard_iface;
-        struct net_device *soft_iface;
-        struct bat_priv *bat_priv;
-        struct hard_iface *primary_if = NULL;
-        struct batman_packet *batman_packet =
-                (struct batman_packet *)(forw_packet->skb->data);
-        int directlink = (batman_packet->flags & DIRECTLINK ? 1 : 0);
-
-        if (!forw_packet->if_incoming) {
-                pr_err("Error - can't forward packet: incoming iface not "
-                       "specified\n");
-                goto out;
-        }
-
-        soft_iface = forw_packet->if_incoming->soft_iface;
-        bat_priv = netdev_priv(soft_iface);
-
-        if (forw_packet->if_incoming->if_status != IF_ACTIVE)
-                goto out;
-
-        primary_if = primary_if_get_selected(bat_priv);
-        if (!primary_if)
-                goto out;
-
-        /* multihomed peer assumed */
-        /* non-primary OGMs are only broadcasted on their interface */
-        if ((directlink && (batman_packet->ttl == 1)) ||
-            (forw_packet->own && (forw_packet->if_incoming != primary_if))) {
-
-                /* FIXME: what about aggregated packets ? */
-                bat_dbg(DBG_BATMAN, bat_priv,
-                        "%s packet (originator %pM, seqno %d, TTL %d) "
-                        "on interface %s [%pM]\n",
-                        (forw_packet->own ? "Sending own" : "Forwarding"),
-                        batman_packet->orig, ntohl(batman_packet->seqno),
-                        batman_packet->ttl,
-                        forw_packet->if_incoming->net_dev->name,
-                        forw_packet->if_incoming->net_dev->dev_addr);
-
-                /* skb is only used once and than forw_packet is free'd */
-                send_skb_packet(forw_packet->skb, forw_packet->if_incoming,
-                                broadcast_addr);
-                forw_packet->skb = NULL;
-
-                goto out;
-        }
-
-        /* broadcast on every interface */
-        rcu_read_lock();
-        list_for_each_entry_rcu(hard_iface, &hardif_list, list) {
-                if (hard_iface->soft_iface != soft_iface)
-                        continue;
-
-                send_packet_to_if(forw_packet, hard_iface);
-        }
-        rcu_read_unlock();
-
-out:
-        if (primary_if)
-                hardif_free_ref(primary_if);
-}
-
 static void realloc_packet_buffer(struct hard_iface *hard_iface,
-                                int new_len)
+                                  int new_len)
 {
         unsigned char *new_buff;
-        struct batman_packet *batman_packet;
 
         new_buff = kmalloc(new_len, GFP_ATOMIC);
 
         /* keep old buffer if kmalloc should fail */
         if (new_buff) {
                 memcpy(new_buff, hard_iface->packet_buff,
-                       sizeof(*batman_packet));
+                       BATMAN_OGM_LEN);
 
                 kfree(hard_iface->packet_buff);
                 hard_iface->packet_buff = new_buff;
@@ -242,60 +97,48 @@ static void realloc_packet_buffer(struct hard_iface *hard_iface,
 }
 
 /* when calling this function (hard_iface == primary_if) has to be true */
-static void prepare_packet_buffer(struct bat_priv *bat_priv,
+static int prepare_packet_buffer(struct bat_priv *bat_priv,
                                   struct hard_iface *hard_iface)
 {
         int new_len;
-        struct batman_packet *batman_packet;
 
-        new_len = BAT_PACKET_LEN +
+        new_len = BATMAN_OGM_LEN +
                   tt_len((uint8_t)atomic_read(&bat_priv->tt_local_changes));
 
         /* if we have too many changes for one packet don't send any
          * and wait for the tt table request which will be fragmented */
         if (new_len > hard_iface->soft_iface->mtu)
-                new_len = BAT_PACKET_LEN;
+                new_len = BATMAN_OGM_LEN;
 
         realloc_packet_buffer(hard_iface, new_len);
-        batman_packet = (struct batman_packet *)hard_iface->packet_buff;
 
         atomic_set(&bat_priv->tt_crc, tt_local_crc(bat_priv));
 
         /* reset the sending counter */
         atomic_set(&bat_priv->tt_ogm_append_cnt, TT_OGM_APPEND_MAX);
 
-        batman_packet->tt_num_changes = tt_changes_fill_buffer(bat_priv,
-                                hard_iface->packet_buff + BAT_PACKET_LEN,
-                                hard_iface->packet_len - BAT_PACKET_LEN);
-
+        return tt_changes_fill_buffer(bat_priv,
+                                      hard_iface->packet_buff + BATMAN_OGM_LEN,
+                                      hard_iface->packet_len - BATMAN_OGM_LEN);
 }
 
-static void reset_packet_buffer(struct bat_priv *bat_priv,
-        struct hard_iface *hard_iface)
+static int reset_packet_buffer(struct bat_priv *bat_priv,
+                                struct hard_iface *hard_iface)
 {
-        struct batman_packet *batman_packet;
-
-        realloc_packet_buffer(hard_iface, BAT_PACKET_LEN);
-
-        batman_packet = (struct batman_packet *)hard_iface->packet_buff;
-        batman_packet->tt_num_changes = 0;
+        realloc_packet_buffer(hard_iface, BATMAN_OGM_LEN);
+        return 0;
 }
 
-void schedule_own_packet(struct hard_iface *hard_iface)
+void schedule_bat_ogm(struct hard_iface *hard_iface)
 {
         struct bat_priv *bat_priv = netdev_priv(hard_iface->soft_iface);
         struct hard_iface *primary_if;
-        unsigned long send_time;
-        struct batman_packet *batman_packet;
-        int vis_server;
+        int tt_num_changes = -1;
 
         if ((hard_iface->if_status == IF_NOT_IN_USE) ||
             (hard_iface->if_status == IF_TO_BE_REMOVED))
                 return;
 
-        vis_server = atomic_read(&bat_priv->vis_mode);
-        primary_if = primary_if_get_selected(bat_priv);
-
         /**
          * the interface gets activated here to avoid race conditions between
          * the moment of activating the interface in
@@ -306,124 +149,26 @@ void schedule_own_packet(struct hard_iface *hard_iface)
         if (hard_iface->if_status == IF_TO_BE_ACTIVATED)
                 hard_iface->if_status = IF_ACTIVE;
 
+        primary_if = primary_if_get_selected(bat_priv);
+
         if (hard_iface == primary_if) {
                 /* if at least one change happened */
                 if (atomic_read(&bat_priv->tt_local_changes) > 0) {
                         tt_commit_changes(bat_priv);
-                        prepare_packet_buffer(bat_priv, hard_iface);
+                        tt_num_changes = prepare_packet_buffer(bat_priv,
+                                                               hard_iface);
                 }
 
-                /* if the changes have been sent enough times */
+                /* if the changes have been sent often enough */
                 if (!atomic_dec_not_zero(&bat_priv->tt_ogm_append_cnt))
-                        reset_packet_buffer(bat_priv, hard_iface);
+                        tt_num_changes = reset_packet_buffer(bat_priv,
+                                                             hard_iface);
         }
 
-        /**
-         * NOTE: packet_buff might just have been re-allocated in
-         * prepare_packet_buffer() or in reset_packet_buffer()
-         */
-        batman_packet = (struct batman_packet *)hard_iface->packet_buff;
-
-        /* change sequence number to network order */
-        batman_packet->seqno =
-                htonl((uint32_t)atomic_read(&hard_iface->seqno));
-
-        batman_packet->ttvn = atomic_read(&bat_priv->ttvn);
-        batman_packet->tt_crc = htons((uint16_t)atomic_read(&bat_priv->tt_crc));
-
-        if (vis_server == VIS_TYPE_SERVER_SYNC)
-                batman_packet->flags |= VIS_SERVER;
-        else
-                batman_packet->flags &= ~VIS_SERVER;
-
-        if ((hard_iface == primary_if) &&
-            (atomic_read(&bat_priv->gw_mode) == GW_MODE_SERVER))
-                batman_packet->gw_flags =
-                                (uint8_t)atomic_read(&bat_priv->gw_bandwidth);
-        else
-                batman_packet->gw_flags = NO_FLAGS;
-
-        atomic_inc(&hard_iface->seqno);
-
-        slide_own_bcast_window(hard_iface);
-        send_time = own_send_time(bat_priv);
-        add_bat_packet_to_list(bat_priv,
-                               hard_iface->packet_buff,
-                               hard_iface->packet_len,
-                               hard_iface, 1, send_time);
-
         if (primary_if)
                 hardif_free_ref(primary_if);
-}
-
-void schedule_forward_packet(struct orig_node *orig_node,
-                             const struct ethhdr *ethhdr,
-                             struct batman_packet *batman_packet,
-                             int directlink,
-                             struct hard_iface *if_incoming)
-{
-        struct bat_priv *bat_priv = netdev_priv(if_incoming->soft_iface);
-        struct neigh_node *router;
-        uint8_t in_tq, in_ttl, tq_avg = 0;
-        unsigned long send_time;
-        uint8_t tt_num_changes;
-
-        if (batman_packet->ttl <= 1) {
-                bat_dbg(DBG_BATMAN, bat_priv, "ttl exceeded\n");
-                return;
-        }
-
-        router = orig_node_get_router(orig_node);
-
-        in_tq = batman_packet->tq;
-        in_ttl = batman_packet->ttl;
-        tt_num_changes = batman_packet->tt_num_changes;
-
-        batman_packet->ttl--;
-        memcpy(batman_packet->prev_sender, ethhdr->h_source, ETH_ALEN);
-
-        /* rebroadcast tq of our best ranking neighbor to ensure the rebroadcast
-         * of our best tq value */
-        if (router && router->tq_avg != 0) {
-
-                /* rebroadcast ogm of best ranking neighbor as is */
-                if (!compare_eth(router->addr, ethhdr->h_source)) {
-                        batman_packet->tq = router->tq_avg;
-
-                        if (router->last_ttl)
-                                batman_packet->ttl = router->last_ttl - 1;
-                }
-
-                tq_avg = router->tq_avg;
-        }
-
-        if (router)
-                neigh_node_free_ref(router);
-
-        /* apply hop penalty */
-        batman_packet->tq = hop_penalty(batman_packet->tq, bat_priv);
-
-        bat_dbg(DBG_BATMAN, bat_priv,
-                "Forwarding packet: tq_orig: %i, tq_avg: %i, "
-                "tq_forw: %i, ttl_orig: %i, ttl_forw: %i\n",
-                in_tq, tq_avg, batman_packet->tq, in_ttl - 1,
-                batman_packet->ttl);
-
-        batman_packet->seqno = htonl(batman_packet->seqno);
-        batman_packet->tt_crc = htons(batman_packet->tt_crc);
-
-        /* switch of primaries first hop flag when forwarding */
-        batman_packet->flags &= ~PRIMARIES_FIRST_HOP;
-        if (directlink)
-                batman_packet->flags |= DIRECTLINK;
-        else
-                batman_packet->flags &= ~DIRECTLINK;
 
-        send_time = forward_send_time();
-        add_bat_packet_to_list(bat_priv,
-                               (unsigned char *)batman_packet,
-                               sizeof(*batman_packet) + tt_len(tt_num_changes),
-                               if_incoming, 0, send_time);
+        bat_ogm_schedule(hard_iface, tt_num_changes);
 }
 
 static void forw_packet_free(struct forw_packet *forw_packet)
@@ -454,7 +199,7 @@ static void _add_bcast_packet_to_list(struct bat_priv *bat_priv,
 }
 
 /* add a broadcast packet to the queue and setup timers. broadcast packets
- * are sent multiple times to increase probability for beeing received.
+ * are sent multiple times to increase probability for being received.
  *
  * This function returns NETDEV_TX_OK on success and NETDEV_TX_BUSY on
  * errors.
@@ -557,7 +302,7 @@ out:
         atomic_inc(&bat_priv->bcast_queue_left);
 }
 
-void send_outstanding_bat_packet(struct work_struct *work)
+void send_outstanding_bat_ogm_packet(struct work_struct *work)
 {
         struct delayed_work *delayed_work =
                 container_of(work, struct delayed_work, work);
@@ -573,7 +318,7 @@ void send_outstanding_bat_packet(struct work_struct *work)
         if (atomic_read(&bat_priv->mesh_state) == MESH_DEACTIVATING)
                 goto out;
 
-        send_packet(forw_packet);
+        bat_ogm_emit(forw_packet);
 
         /**
          * we have to have at least one packet in the queue
@@ -581,7 +326,7 @@ void send_outstanding_bat_packet(struct work_struct *work)
          * shutting down
          */
         if (forw_packet->own)
-                schedule_own_packet(forw_packet->if_incoming);
+                schedule_bat_ogm(forw_packet->if_incoming);
 
 out:
         /* don't count own packet */
@@ -612,7 +357,7 @@ void purge_outstanding_packets(struct bat_priv *bat_priv,
                                   &bat_priv->forw_bcast_list, list) {
 
                 /**
-                 * if purge_outstanding_packets() was called with an argmument
+                 * if purge_outstanding_packets() was called with an argument
                  * we delete only packets belonging to the given interface
                  */
                 if ((hard_iface) &&
@@ -641,7 +386,7 @@ void purge_outstanding_packets(struct bat_priv *bat_priv,
                                   &bat_priv->forw_bat_list, list) {
 
                 /**
-                 * if purge_outstanding_packets() was called with an argmument
+                 * if purge_outstanding_packets() was called with an argument
                  * we delete only packets belonging to the given interface
                  */
                 if ((hard_iface) &&
diff --git a/net/batman-adv/send.h b/net/batman-adv/send.h
index 1f2d1e877663..c8ca3ef7385b 100644
--- a/net/batman-adv/send.h
+++ b/net/batman-adv/send.h
@@ -24,15 +24,10 @@
 
 int send_skb_packet(struct sk_buff *skb, struct hard_iface *hard_iface,
                     const uint8_t *dst_addr);
-void schedule_own_packet(struct hard_iface *hard_iface);
-void schedule_forward_packet(struct orig_node *orig_node,
-                             const struct ethhdr *ethhdr,
-                             struct batman_packet *batman_packet,
-                             int directlink,
-                             struct hard_iface *if_outgoing);
+void schedule_bat_ogm(struct hard_iface *hard_iface);
 int add_bcast_packet_to_list(struct bat_priv *bat_priv,
                              const struct sk_buff *skb, unsigned long delay);
-void send_outstanding_bat_packet(struct work_struct *work);
+void send_outstanding_bat_ogm_packet(struct work_struct *work);
 void purge_outstanding_packets(struct bat_priv *bat_priv,
                                const struct hard_iface *hard_iface);
 
diff --git a/net/batman-adv/soft-interface.c b/net/batman-adv/soft-interface.c
index 05dd35114a27..f9cc95728989 100644
--- a/net/batman-adv/soft-interface.c
+++ b/net/batman-adv/soft-interface.c
@@ -445,30 +445,31 @@ static void softif_batman_recv(struct sk_buff *skb, struct net_device *dev,
 {
         struct bat_priv *bat_priv = netdev_priv(dev);
         struct ethhdr *ethhdr = (struct ethhdr *)skb->data;
-        struct batman_packet *batman_packet;
+        struct batman_ogm_packet *batman_ogm_packet;
         struct softif_neigh *softif_neigh = NULL;
         struct hard_iface *primary_if = NULL;
         struct softif_neigh *curr_softif_neigh = NULL;
 
         if (ntohs(ethhdr->h_proto) == ETH_P_8021Q)
-                batman_packet = (struct batman_packet *)
+                batman_ogm_packet = (struct batman_ogm_packet *)
                                         (skb->data + ETH_HLEN + VLAN_HLEN);
         else
-                batman_packet = (struct batman_packet *)(skb->data + ETH_HLEN);
+                batman_ogm_packet = (struct batman_ogm_packet *)
+                                                        (skb->data + ETH_HLEN);
 
-        if (batman_packet->version != COMPAT_VERSION)
+        if (batman_ogm_packet->version != COMPAT_VERSION)
                 goto out;
 
-        if (batman_packet->packet_type != BAT_PACKET)
+        if (batman_ogm_packet->packet_type != BAT_OGM)
                 goto out;
 
-        if (!(batman_packet->flags & PRIMARIES_FIRST_HOP))
+        if (!(batman_ogm_packet->flags & PRIMARIES_FIRST_HOP))
                 goto out;
 
-        if (is_my_mac(batman_packet->orig))
+        if (is_my_mac(batman_ogm_packet->orig))
                 goto out;
 
-        softif_neigh = softif_neigh_get(bat_priv, batman_packet->orig, vid);
+        softif_neigh = softif_neigh_get(bat_priv, batman_ogm_packet->orig, vid);
         if (!softif_neigh)
                 goto out;
 
@@ -532,11 +533,11 @@ static int interface_set_mac_addr(struct net_device *dev, void *p)
         if (!is_valid_ether_addr(addr->sa_data))
                 return -EADDRNOTAVAIL;
 
-        /* only modify transtable if it has been initialised before */
+        /* only modify transtable if it has been initialized before */
         if (atomic_read(&bat_priv->mesh_state) == MESH_ACTIVE) {
                 tt_local_remove(bat_priv, dev->dev_addr,
                                 "mac address changed", false);
-                tt_local_add(dev, addr->sa_data);
+                tt_local_add(dev, addr->sa_data, NULL_IFINDEX);
         }
 
         memcpy(dev->dev_addr, addr->sa_data, ETH_ALEN);
@@ -595,11 +596,12 @@ static int interface_tx(struct sk_buff *skb, struct net_device *soft_iface)
                 goto dropped;
 
         /* Register the client MAC in the transtable */
-        tt_local_add(soft_iface, ethhdr->h_source);
+        tt_local_add(soft_iface, ethhdr->h_source, skb->skb_iif);
 
-        orig_node = transtable_search(bat_priv, ethhdr->h_dest);
+        orig_node = transtable_search(bat_priv, ethhdr->h_source,
+                                      ethhdr->h_dest);
         do_bcast = is_multicast_ether_addr(ethhdr->h_dest);
-        if (do_bcast || (orig_node && orig_node->gw_flags)) {
+        if (do_bcast || (orig_node && orig_node->gw_flags)) {
                 ret = gw_is_target(bat_priv, skb, orig_node);
 
                 if (ret < 0)
@@ -739,6 +741,9 @@ void interface_rx(struct net_device *soft_iface,
 
         soft_iface->last_rx = jiffies;
 
+        if (is_ap_isolated(bat_priv, ethhdr->h_source, ethhdr->h_dest))
+                goto dropped;
+
         netif_rx(skb);
         goto out;
 
@@ -796,10 +801,8 @@ struct net_device *softif_create(const char *name)
 
         soft_iface = alloc_netdev(sizeof(*bat_priv), name, interface_setup);
 
-        if (!soft_iface) {
-                pr_err("Unable to allocate the batman interface: %s\n", name);
+        if (!soft_iface)
                 goto out;
-        }
 
         ret = register_netdevice(soft_iface);
         if (ret < 0) {
@@ -812,6 +815,7 @@ struct net_device *softif_create(const char *name)
 
         atomic_set(&bat_priv->aggregated_ogms, 1);
         atomic_set(&bat_priv->bonding, 0);
+        atomic_set(&bat_priv->ap_isolation, 0);
         atomic_set(&bat_priv->vis_mode, VIS_TYPE_CLIENT_UPDATE);
         atomic_set(&bat_priv->gw_mode, GW_MODE_OFF);
         atomic_set(&bat_priv->gw_sel_class, 20);
diff --git a/net/batman-adv/translation-table.c b/net/batman-adv/translation-table.c
index fb6931d00cd7..c7aafc7c5ed4 100644
--- a/net/batman-adv/translation-table.c
+++ b/net/batman-adv/translation-table.c
@@ -137,10 +137,22 @@ static void tt_local_entry_free_ref(struct tt_local_entry *tt_local_entry)
                 kfree_rcu(tt_local_entry, rcu);
 }
 
+static void tt_global_entry_free_rcu(struct rcu_head *rcu)
+{
+        struct tt_global_entry *tt_global_entry;
+
+        tt_global_entry = container_of(rcu, struct tt_global_entry, rcu);
+
+        if (tt_global_entry->orig_node)
+                orig_node_free_ref(tt_global_entry->orig_node);
+
+        kfree(tt_global_entry);
+}
+
 static void tt_global_entry_free_ref(struct tt_global_entry *tt_global_entry)
 {
         if (atomic_dec_and_test(&tt_global_entry->refcount))
-                kfree_rcu(tt_global_entry, rcu);
+                call_rcu(&tt_global_entry->rcu, tt_global_entry_free_rcu);
 }
 
 static void tt_local_event(struct bat_priv *bat_priv, const uint8_t *addr,
@@ -183,7 +195,8 @@ static int tt_local_init(struct bat_priv *bat_priv)
         return 1;
 }
 
-void tt_local_add(struct net_device *soft_iface, const uint8_t *addr)
+void tt_local_add(struct net_device *soft_iface, const uint8_t *addr,
+                  int ifindex)
 {
         struct bat_priv *bat_priv = netdev_priv(soft_iface);
         struct tt_local_entry *tt_local_entry = NULL;
@@ -207,6 +220,8 @@ void tt_local_add(struct net_device *soft_iface, const uint8_t *addr)
         memcpy(tt_local_entry->addr, addr, ETH_ALEN);
         tt_local_entry->last_seen = jiffies;
         tt_local_entry->flags = NO_FLAGS;
+        if (is_wifi_iface(ifindex))
+                tt_local_entry->flags |= TT_CLIENT_WIFI;
         atomic_set(&tt_local_entry->refcount, 2);
 
         /* the batman interface mac address should never be purged */
@@ -329,7 +344,7 @@ int tt_local_seq_print_text(struct seq_file *seq, void *offset)
 
                 rcu_read_lock();
                 __hlist_for_each_rcu(node, head)
-                        buf_size += 21;
+                        buf_size += 29;
                 rcu_read_unlock();
         }
 
@@ -348,8 +363,19 @@ int tt_local_seq_print_text(struct seq_file *seq, void *offset)
                 rcu_read_lock();
                 hlist_for_each_entry_rcu(tt_local_entry, node,
                                          head, hash_entry) {
-                        pos += snprintf(buff + pos, 22, " * %pM\n",
-                                        tt_local_entry->addr);
+                        pos += snprintf(buff + pos, 30, " * %pM "
+                                        "[%c%c%c%c%c]\n",
+                                        tt_local_entry->addr,
+                                        (tt_local_entry->flags &
+                                         TT_CLIENT_ROAM ? 'R' : '.'),
+                                        (tt_local_entry->flags &
+                                         TT_CLIENT_NOPURGE ? 'P' : '.'),
+                                        (tt_local_entry->flags &
+                                         TT_CLIENT_NEW ? 'N' : '.'),
+                                        (tt_local_entry->flags &
+                                         TT_CLIENT_PENDING ? 'X' : '.'),
+                                        (tt_local_entry->flags &
+                                         TT_CLIENT_WIFI ? 'W' : '.'));
                 }
                 rcu_read_unlock();
         }
@@ -369,8 +395,8 @@ static void tt_local_set_pending(struct bat_priv *bat_priv,
         tt_local_event(bat_priv, tt_local_entry->addr,
                        tt_local_entry->flags | flags);
 
-        /* The local client has to be merked as "pending to be removed" but has
-         * to be kept in the table in order to send it in an full tables
+        /* The local client has to be marked as "pending to be removed" but has
+         * to be kept in the table in order to send it in a full table
          * response issued before the net ttvn increment (consistency check) */
         tt_local_entry->flags |= TT_CLIENT_PENDING;
 }
@@ -495,7 +521,8 @@ static void tt_changes_list_free(struct bat_priv *bat_priv)
 
 /* caller must hold orig_node refcount */
 int tt_global_add(struct bat_priv *bat_priv, struct orig_node *orig_node,
-                  const unsigned char *tt_addr, uint8_t ttvn, bool roaming)
+                  const unsigned char *tt_addr, uint8_t ttvn, bool roaming,
+                  bool wifi)
 {
         struct tt_global_entry *tt_global_entry;
         struct orig_node *orig_node_tmp;
@@ -537,6 +564,9 @@ int tt_global_add(struct bat_priv *bat_priv, struct orig_node *orig_node,
                 tt_global_entry->roam_at = 0;
         }
 
+        if (wifi)
+                tt_global_entry->flags |= TT_CLIENT_WIFI;
+
         bat_dbg(DBG_TT, bat_priv,
                 "Creating new global tt entry: %pM (via %pM)\n",
                 tt_global_entry->addr, orig_node->orig);
@@ -582,8 +612,8 @@ int tt_global_seq_print_text(struct seq_file *seq, void *offset)
         seq_printf(seq,
                    "Globally announced TT entries received via the mesh %s\n",
                    net_dev->name);
-        seq_printf(seq, "       %-13s %s       %-15s %s\n",
-                   "Client", "(TTVN)", "Originator", "(Curr TTVN)");
+        seq_printf(seq, "       %-13s %s       %-15s %s %s\n",
+                   "Client", "(TTVN)", "Originator", "(Curr TTVN)", "Flags");
 
         buf_size = 1;
         /* Estimate length for: " * xx:xx:xx:xx:xx:xx (ttvn) via
@@ -593,7 +623,7 @@ int tt_global_seq_print_text(struct seq_file *seq, void *offset)
 
                 rcu_read_lock();
                 __hlist_for_each_rcu(node, head)
-                        buf_size += 59;
+                        buf_size += 67;
                 rcu_read_unlock();
         }
 
@@ -612,14 +642,20 @@ int tt_global_seq_print_text(struct seq_file *seq, void *offset)
                 rcu_read_lock();
                 hlist_for_each_entry_rcu(tt_global_entry, node,
                                          head, hash_entry) {
-                        pos += snprintf(buff + pos, 61,
-                                        " * %pM  (%3u) via %pM     (%3u)\n",
-                                        tt_global_entry->addr,
+                        pos += snprintf(buff + pos, 69,
+                                        " * %pM  (%3u) via %pM     (%3u)   "
+                                        "[%c%c%c]\n", tt_global_entry->addr,
                                         tt_global_entry->ttvn,
                                         tt_global_entry->orig_node->orig,
                                         (uint8_t) atomic_read(
                                                 &tt_global_entry->orig_node->
-                                                last_ttvn));
+                                                last_ttvn),
+                                        (tt_global_entry->flags &
+                                         TT_CLIENT_ROAM ? 'R' : '.'),
+                                        (tt_global_entry->flags &
+                                         TT_CLIENT_PENDING ? 'X' : '.'),
+                                        (tt_global_entry->flags &
+                                         TT_CLIENT_WIFI ? 'W' : '.'));
                 }
                 rcu_read_unlock();
         }
@@ -686,6 +722,9 @@ void tt_global_del_orig(struct bat_priv *bat_priv,
         struct hlist_head *head;
         spinlock_t *list_lock; /* protects write access to the hash lists */
 
+        if (!hash)
+                return;
+
         for (i = 0; i < hash->size; i++) {
                 head = &hash->table[i];
                 list_lock = &hash->list_locks[i];
@@ -774,30 +813,56 @@ static void tt_global_table_free(struct bat_priv *bat_priv)
         bat_priv->tt_global_hash = NULL;
 }
 
+static bool _is_ap_isolated(struct tt_local_entry *tt_local_entry,
+                            struct tt_global_entry *tt_global_entry)
+{
+        bool ret = false;
+
+        if (tt_local_entry->flags & TT_CLIENT_WIFI &&
+            tt_global_entry->flags & TT_CLIENT_WIFI)
+                ret = true;
+
+        return ret;
+}
+
 struct orig_node *transtable_search(struct bat_priv *bat_priv,
-                                    const uint8_t *addr)
+                                    const uint8_t *src, const uint8_t *addr)
 {
-        struct tt_global_entry *tt_global_entry;
+        struct tt_local_entry *tt_local_entry = NULL;
+        struct tt_global_entry *tt_global_entry = NULL;
         struct orig_node *orig_node = NULL;
 
-        tt_global_entry = tt_global_hash_find(bat_priv, addr);
+        if (src && atomic_read(&bat_priv->ap_isolation)) {
+                tt_local_entry = tt_local_hash_find(bat_priv, src);
+                if (!tt_local_entry)
+                        goto out;
+        }
 
+        tt_global_entry = tt_global_hash_find(bat_priv, addr);
         if (!tt_global_entry)
                 goto out;
 
+        /* check whether the clients should not communicate due to AP
+         * isolation */
+        if (tt_local_entry && _is_ap_isolated(tt_local_entry, tt_global_entry))
+                goto out;
+
         if (!atomic_inc_not_zero(&tt_global_entry->orig_node->refcount))
-                goto free_tt;
+                goto out;
 
         /* A global client marked as PENDING has already moved from that
          * originator */
         if (tt_global_entry->flags & TT_CLIENT_PENDING)
-                goto free_tt;
+                goto out;
 
         orig_node = tt_global_entry->orig_node;
 
-free_tt:
-        tt_global_entry_free_ref(tt_global_entry);
 out:
+        if (tt_global_entry)
+                tt_global_entry_free_ref(tt_global_entry);
+        if (tt_local_entry)
+                tt_local_entry_free_ref(tt_local_entry);
+
         return orig_node;
 }
 
@@ -999,7 +1064,6 @@ static struct sk_buff *tt_response_fill_table(uint16_t tt_len, uint8_t ttvn,
         tt_response = (struct tt_query_packet *)skb_put(skb,
                                                      tt_query_size + tt_len);
         tt_response->ttvn = ttvn;
-        tt_response->tt_data = htons(tt_tot);
 
         tt_change = (struct tt_change *)(skb->data + tt_query_size);
         tt_count = 0;
@@ -1025,12 +1089,17 @@ static struct sk_buff *tt_response_fill_table(uint16_t tt_len, uint8_t ttvn,
         }
         rcu_read_unlock();
 
+        /* store in the message the number of entries we have successfully
+         * copied */
+        tt_response->tt_data = htons(tt_count);
+
 out:
         return skb;
 }
 
-int send_tt_request(struct bat_priv *bat_priv, struct orig_node *dst_orig_node,
-                    uint8_t ttvn, uint16_t tt_crc, bool full_table)
+static int send_tt_request(struct bat_priv *bat_priv,
+                           struct orig_node *dst_orig_node,
+                           uint8_t ttvn, uint16_t tt_crc, bool full_table)
 {
         struct sk_buff *skb = NULL;
         struct tt_query_packet *tt_request;
@@ -1137,12 +1206,12 @@ static bool send_other_tt_response(struct bat_priv *bat_priv,
         orig_ttvn = (uint8_t)atomic_read(&req_dst_orig_node->last_ttvn);
         req_ttvn = tt_request->ttvn;
 
-        /* I have not the requested data */
+        /* I don't have the requested data */
         if (orig_ttvn != req_ttvn ||
             tt_request->tt_data != req_dst_orig_node->tt_crc)
                 goto out;
 
-        /* If it has explicitly been requested the full table */
+        /* If the full table has been explicitly requested */
         if (tt_request->flags & TT_FULL_TABLE ||
             !req_dst_orig_node->tt_buff)
                 full_table = true;
@@ -1363,7 +1432,9 @@ static void _tt_update_changes(struct bat_priv *bat_priv,
                                       (tt_change + i)->flags & TT_CLIENT_ROAM);
                 else
                         if (!tt_global_add(bat_priv, orig_node,
-                                           (tt_change + i)->addr, ttvn, false))
+                                           (tt_change + i)->addr, ttvn, false,
+                                           (tt_change + i)->flags &
+                                                        TT_CLIENT_WIFI))
                                 /* In case of problem while storing a
                                  * global_entry, we stop the updating
                                  * procedure without committing the
@@ -1403,9 +1474,10 @@ out:
                 orig_node_free_ref(orig_node);
 }
 
-void tt_update_changes(struct bat_priv *bat_priv, struct orig_node *orig_node,
-                       uint16_t tt_num_changes, uint8_t ttvn,
-                       struct tt_change *tt_change)
+static void tt_update_changes(struct bat_priv *bat_priv,
+                              struct orig_node *orig_node,
+                              uint16_t tt_num_changes, uint8_t ttvn,
+                              struct tt_change *tt_change)
 {
         _tt_update_changes(bat_priv, orig_node, tt_change, tt_num_changes,
                            ttvn);
@@ -1668,6 +1740,8 @@ static void tt_local_reset_flags(struct bat_priv *bat_priv, uint16_t flags)
                 rcu_read_lock();
                 hlist_for_each_entry_rcu(tt_local_entry, node,
                                          head, hash_entry) {
+                        if (!(tt_local_entry->flags & flags))
+                                continue;
                         tt_local_entry->flags &= ~flags;
                         atomic_inc(&bat_priv->num_local_tt);
                 }
@@ -1720,3 +1794,90 @@ void tt_commit_changes(struct bat_priv *bat_priv)
         atomic_inc(&bat_priv->ttvn);
         bat_priv->tt_poss_change = false;
 }
+
+bool is_ap_isolated(struct bat_priv *bat_priv, uint8_t *src, uint8_t *dst)
+{
+        struct tt_local_entry *tt_local_entry = NULL;
+        struct tt_global_entry *tt_global_entry = NULL;
+        bool ret = true;
+
+        if (!atomic_read(&bat_priv->ap_isolation))
+                return false;
+
+        tt_local_entry = tt_local_hash_find(bat_priv, dst);
+        if (!tt_local_entry)
+                goto out;
+
+        tt_global_entry = tt_global_hash_find(bat_priv, src);
+        if (!tt_global_entry)
+                goto out;
+
+        if (_is_ap_isolated(tt_local_entry, tt_global_entry))
+                goto out;
+
+        ret = false;
+
+out:
+        if (tt_global_entry)
+                tt_global_entry_free_ref(tt_global_entry);
+        if (tt_local_entry)
+                tt_local_entry_free_ref(tt_local_entry);
+        return ret;
+}
+
+void tt_update_orig(struct bat_priv *bat_priv, struct orig_node *orig_node,
+                    const unsigned char *tt_buff, uint8_t tt_num_changes,
+                    uint8_t ttvn, uint16_t tt_crc)
+{
+        uint8_t orig_ttvn = (uint8_t)atomic_read(&orig_node->last_ttvn);
+        bool full_table = true;
+
+        /* the ttvn increased by one -> we can apply the attached changes */
+        if (ttvn - orig_ttvn == 1) {
+                /* the OGM could not contain the changes due to their size or
+                 * because they have already been sent TT_OGM_APPEND_MAX times.
+                 * In this case send a tt request */
+                if (!tt_num_changes) {
+                        full_table = false;
+                        goto request_table;
+                }
+
+                tt_update_changes(bat_priv, orig_node, tt_num_changes, ttvn,
+                                  (struct tt_change *)tt_buff);
+
+                /* Even if we received the precomputed crc with the OGM, we
+                 * prefer to recompute it to spot any possible inconsistency
+                 * in the global table */
+                orig_node->tt_crc = tt_global_crc(bat_priv, orig_node);
+
+                /* The ttvn alone is not enough to guarantee consistency
+                 * because a single value could represent different states
+                 * (due to the wrap around). Thus a node has to check whether
+                 * the resulting table (after applying the changes) is still
+                 * consistent or not. E.g. a node could disconnect while its
+                 * ttvn is X and reconnect on ttvn = X + TTVN_MAX: in this case
+                 * checking the CRC value is mandatory to detect the
+                 * inconsistency */
+                if (orig_node->tt_crc != tt_crc)
+                        goto request_table;
+
+                /* Roaming phase is over: tables are in sync again. I can
+                 * unset the flag */
+                orig_node->tt_poss_change = false;
+        } else {
+                /* if we missed more than one change or our tables are not
+                 * in sync anymore -> request fresh tt data */
+                if (ttvn != orig_ttvn || orig_node->tt_crc != tt_crc) {
+request_table:
+                        bat_dbg(DBG_TT, bat_priv, "TT inconsistency for %pM. "
+                                "Need to retrieve the correct information "
+                                "(ttvn: %u last_ttvn: %u crc: %u last_crc: "
+                                "%u num_changes: %u)\n", orig_node->orig, ttvn,
+                                orig_ttvn, tt_crc, orig_node->tt_crc,
+                                tt_num_changes);
+                        send_tt_request(bat_priv, orig_node, ttvn, tt_crc,
+                                        full_table);
+                        return;
+                }
+        }
+}
diff --git a/net/batman-adv/translation-table.h b/net/batman-adv/translation-table.h
index d4122cba53b8..30efd49881a3 100644
--- a/net/batman-adv/translation-table.h
+++ b/net/batman-adv/translation-table.h
@@ -26,15 +26,16 @@ int tt_len(int changes_num);
 int tt_changes_fill_buffer(struct bat_priv *bat_priv,
                            unsigned char *buff, int buff_len);
 int tt_init(struct bat_priv *bat_priv);
-void tt_local_add(struct net_device *soft_iface, const uint8_t *addr);
+void tt_local_add(struct net_device *soft_iface, const uint8_t *addr,
+                  int ifindex);
 void tt_local_remove(struct bat_priv *bat_priv,
                      const uint8_t *addr, const char *message, bool roaming);
 int tt_local_seq_print_text(struct seq_file *seq, void *offset);
 void tt_global_add_orig(struct bat_priv *bat_priv, struct orig_node *orig_node,
                         const unsigned char *tt_buff, int tt_buff_len);
-int tt_global_add(struct bat_priv *bat_priv,
-                  struct orig_node *orig_node, const unsigned char *addr,
-                  uint8_t ttvn, bool roaming);
+int tt_global_add(struct bat_priv *bat_priv, struct orig_node *orig_node,
+                  const unsigned char *addr, uint8_t ttvn, bool roaming,
+                  bool wifi);
 int tt_global_seq_print_text(struct seq_file *seq, void *offset);
 void tt_global_del_orig(struct bat_priv *bat_priv,
                         struct orig_node *orig_node, const char *message);
@@ -42,25 +43,23 @@ void tt_global_del(struct bat_priv *bat_priv,
                    struct orig_node *orig_node, const unsigned char *addr,
                    const char *message, bool roaming);
 struct orig_node *transtable_search(struct bat_priv *bat_priv,
-                                    const uint8_t *addr);
+                                    const uint8_t *src, const uint8_t *addr);
 void tt_save_orig_buffer(struct bat_priv *bat_priv, struct orig_node *orig_node,
                          const unsigned char *tt_buff, uint8_t tt_num_changes);
 uint16_t tt_local_crc(struct bat_priv *bat_priv);
 uint16_t tt_global_crc(struct bat_priv *bat_priv, struct orig_node *orig_node);
 void tt_free(struct bat_priv *bat_priv);
-int send_tt_request(struct bat_priv *bat_priv,
-                    struct orig_node *dst_orig_node, uint8_t hvn,
-                    uint16_t tt_crc, bool full_table);
 bool send_tt_response(struct bat_priv *bat_priv,
                       struct tt_query_packet *tt_request);
-void tt_update_changes(struct bat_priv *bat_priv, struct orig_node *orig_node,
-                       uint16_t tt_num_changes, uint8_t ttvn,
-                       struct tt_change *tt_change);
 bool is_my_client(struct bat_priv *bat_priv, const uint8_t *addr);
 void handle_tt_response(struct bat_priv *bat_priv,
                         struct tt_query_packet *tt_response);
 void send_roam_adv(struct bat_priv *bat_priv, uint8_t *client,
                    struct orig_node *orig_node);
 void tt_commit_changes(struct bat_priv *bat_priv);
+bool is_ap_isolated(struct bat_priv *bat_priv, uint8_t *src, uint8_t *dst);
+void tt_update_orig(struct bat_priv *bat_priv, struct orig_node *orig_node,
+                    const unsigned char *tt_buff, uint8_t tt_num_changes,
+                    uint8_t ttvn, uint16_t tt_crc);
 
 #endif /* _NET_BATMAN_ADV_TRANSLATION_TABLE_H_ */
diff --git a/net/batman-adv/types.h b/net/batman-adv/types.h
index 25bd1db35370..ab8d0fe6df5a 100644
--- a/net/batman-adv/types.h
+++ b/net/batman-adv/types.h
@@ -57,7 +57,7 @@ struct hard_iface {
  *      @batman_seqno_reset: time when the batman seqno window was reset
  *      @gw_flags: flags related to gateway class
  *      @flags: for now only VIS_SERVER flag
- *      @last_real_seqno: last and best known squence number
+ *      @last_real_seqno: last and best known sequence number
  *      @last_ttl: ttl of last received packet
  *      @last_bcast_seqno: last broadcast sequence number received by this host
  *
@@ -146,6 +146,7 @@ struct bat_priv {
         atomic_t aggregated_ogms;       /* boolean */
         atomic_t bonding;               /* boolean */
         atomic_t fragmentation;         /* boolean */
+        atomic_t ap_isolation;          /* boolean */
         atomic_t vis_mode;              /* VIS_TYPE_* */
         atomic_t gw_mode;               /* GW_MODE_* */
         atomic_t gw_sel_class;          /* uint */
@@ -156,7 +157,7 @@ struct bat_priv {
         atomic_t bcast_seqno;
         atomic_t bcast_queue_left;
         atomic_t batman_queue_left;
-        atomic_t ttvn; /* tranlation table version number */
+        atomic_t ttvn; /* translation table version number */
         atomic_t tt_ogm_append_cnt;
         atomic_t tt_local_changes; /* changes registered in a OGM interval */
         /* The tt_poss_change flag is used to detect an ongoing roaming phase.
@@ -223,22 +224,22 @@ struct socket_packet {
 
 struct tt_local_entry {
         uint8_t addr[ETH_ALEN];
+        struct hlist_node hash_entry;
         unsigned long last_seen;
         uint16_t flags;
         atomic_t refcount;
         struct rcu_head rcu;
-        struct hlist_node hash_entry;
 };
 
 struct tt_global_entry {
         uint8_t addr[ETH_ALEN];
+        struct hlist_node hash_entry; /* entry in the global table */
         struct orig_node *orig_node;
         uint8_t ttvn;
         uint16_t flags; /* only TT_GLOBAL_ROAM is used */
         unsigned long roam_at; /* time at which TT_GLOBAL_ROAM was set */
         atomic_t refcount;
         struct rcu_head rcu;
-        struct hlist_node hash_entry; /* entry in the global table */
 };
 
 struct tt_change_node {
diff --git a/net/batman-adv/unicast.c b/net/batman-adv/unicast.c
index 32b125fb3d3b..07d1c1da89dd 100644
--- a/net/batman-adv/unicast.c
+++ b/net/batman-adv/unicast.c
@@ -299,8 +299,10 @@ int unicast_send_skb(struct sk_buff *skb, struct bat_priv *bat_priv)
                         goto find_router;
         }
 
-        /* check for tt host - increases orig_node refcount */
-        orig_node = transtable_search(bat_priv, ethhdr->h_dest);
+        /* check for tt host - increases orig_node refcount.
+         * returns NULL in case of AP isolation */
+        orig_node = transtable_search(bat_priv, ethhdr->h_source,
+                                      ethhdr->h_dest);
 
 find_router:
         /**
diff --git a/net/batman-adv/unicast.h b/net/batman-adv/unicast.h
index 62f54b954625..8fd5535544b9 100644
--- a/net/batman-adv/unicast.h
+++ b/net/batman-adv/unicast.h
@@ -24,7 +24,7 @@
 
 #include "packet.h"
 
-#define FRAG_TIMEOUT 10000      /* purge frag list entrys after time in ms */
+#define FRAG_TIMEOUT 10000      /* purge frag list entries after time in ms */
 #define FRAG_BUFFER_SIZE 6      /* number of list elements in buffer */
 
 int frag_reassemble_skb(struct sk_buff *skb, struct bat_priv *bat_priv,
diff --git a/net/batman-adv/vis.c b/net/batman-adv/vis.c
index 8a1b98589d76..f81a6b668b0c 100644
--- a/net/batman-adv/vis.c
+++ b/net/batman-adv/vis.c
@@ -131,7 +131,7 @@ static void vis_data_insert_interface(const uint8_t *interface,
                         return;
         }
 
-        /* its a new address, add it to the list */
+        /* it's a new address, add it to the list */
         entry = kmalloc(sizeof(*entry), GFP_ATOMIC);
         if (!entry)
                 return;
@@ -465,7 +465,7 @@ static struct vis_info *add_packet(struct bat_priv *bat_priv,
         /* try to add it */
         hash_added = hash_add(bat_priv->vis_hash, vis_info_cmp, vis_info_choose,
                               info, &info->hash_entry);
-        if (hash_added < 0) {
+        if (hash_added != 0) {
                 /* did not work (for some reason) */
                 kref_put(&info->refcount, free_info);
                 info = NULL;
@@ -887,10 +887,8 @@ int vis_init(struct bat_priv *bat_priv)
         }
 
         bat_priv->my_vis_info = kmalloc(MAX_VIS_PACKET_SIZE, GFP_ATOMIC);
-        if (!bat_priv->my_vis_info) {
-                pr_err("Can't initialize vis packet\n");
+        if (!bat_priv->my_vis_info)
                 goto err;
-        }
 
         bat_priv->my_vis_info->skb_packet = dev_alloc_skb(sizeof(*packet) +
                                                           MAX_VIS_PACKET_SIZE +
@@ -920,7 +918,7 @@ int vis_init(struct bat_priv *bat_priv)
         hash_added = hash_add(bat_priv->vis_hash, vis_info_cmp, vis_info_choose,
                               bat_priv->my_vis_info,
                               &bat_priv->my_vis_info->hash_entry);
-        if (hash_added < 0) {
+        if (hash_added != 0) {
                 pr_err("Can't add own vis packet into hash\n");
                 /* not in hash, need to remove it manually. */
                 kref_put(&bat_priv->my_vis_info->refcount, free_info);
diff --git a/net/bluetooth/af_bluetooth.c b/net/bluetooth/af_bluetooth.c
index 117e0d161780..062124cd89cf 100644
--- a/net/bluetooth/af_bluetooth.c
+++ b/net/bluetooth/af_bluetooth.c
@@ -349,7 +349,7 @@ int bt_sock_stream_recvmsg(struct kiocb *iocb, struct socket *sock,
                 }
 
                 chunk = min_t(unsigned int, skb->len, size);
-                if (memcpy_toiovec(msg->msg_iov, skb->data, chunk)) {
+                if (skb_copy_datagram_iovec(skb, 0, msg->msg_iov, chunk)) {
                         skb_queue_head(&sk->sk_receive_queue, skb);
                         if (!copied)
                                 copied = -EFAULT;
@@ -361,7 +361,33 @@ int bt_sock_stream_recvmsg(struct kiocb *iocb, struct socket *sock,
                 sock_recv_ts_and_drops(msg, sk, skb);
 
                 if (!(flags & MSG_PEEK)) {
-                        skb_pull(skb, chunk);
+                        int skb_len = skb_headlen(skb);
+
+                        if (chunk <= skb_len) {
+                                __skb_pull(skb, chunk);
+                        } else {
+                                struct sk_buff *frag;
+
+                                __skb_pull(skb, skb_len);
+                                chunk -= skb_len;
+
+                                skb_walk_frags(skb, frag) {
+                                        if (chunk <= frag->len) {
+                                                /* Pulling partial data */
+                                                skb->len -= chunk;
+                                                skb->data_len -= chunk;
+                                                __skb_pull(frag, chunk);
+                                                break;
+                                        } else if (frag->len) {
+                                                /* Pulling all frag data */
+                                                chunk -= frag->len;
+                                                skb->len -= frag->len;
+                                                skb->data_len -= frag->len;
+                                                __skb_pull(frag, frag->len);
+                                        }
+                                }
+                        }
+
                         if (skb->len) {
                                 skb_queue_head(&sk->sk_receive_queue, skb);
                                 break;
diff --git a/net/bluetooth/bnep/core.c b/net/bluetooth/bnep/core.c
index d9edfe8bf9d6..91bcd3a961ec 100644
--- a/net/bluetooth/bnep/core.c
+++ b/net/bluetooth/bnep/core.c
@@ -492,7 +492,10 @@ static int bnep_session(void *arg)
                 /* RX */
                 while ((skb = skb_dequeue(&sk->sk_receive_queue))) {
                         skb_orphan(skb);
-                        bnep_rx_frame(s, skb);
+                        if (!skb_linearize(skb))
+                                bnep_rx_frame(s, skb);
+                        else
+                                kfree_skb(skb);
                 }
 
                 if (sk->sk_state != BT_CONNECTED)
diff --git a/net/bluetooth/bnep/netdev.c b/net/bluetooth/bnep/netdev.c
index d4f5dff7c955..bc4086480d97 100644
--- a/net/bluetooth/bnep/netdev.c
+++ b/net/bluetooth/bnep/netdev.c
@@ -217,7 +217,7 @@ static const struct net_device_ops bnep_netdev_ops = {
         .ndo_stop            = bnep_net_close,
         .ndo_start_xmit      = bnep_net_xmit,
         .ndo_validate_addr   = eth_validate_addr,
-        .ndo_set_multicast_list = bnep_net_set_mc_list,
+        .ndo_set_rx_mode     = bnep_net_set_mc_list,
         .ndo_set_mac_address = bnep_net_set_mac_addr,
         .ndo_tx_timeout      = bnep_net_timeout,
         .ndo_change_mtu      = eth_change_mtu,
diff --git a/net/bluetooth/cmtp/core.c b/net/bluetooth/cmtp/core.c
index 521baa4fe835..7d00ddf9e9dc 100644
--- a/net/bluetooth/cmtp/core.c
+++ b/net/bluetooth/cmtp/core.c
@@ -302,7 +302,10 @@ static int cmtp_session(void *arg)
 
                 while ((skb = skb_dequeue(&sk->sk_receive_queue))) {
                         skb_orphan(skb);
-                        cmtp_recv_frame(session, skb);
+                        if (!skb_linearize(skb))
+                                cmtp_recv_frame(session, skb);
+                        else
+                                kfree_skb(skb);
                 }
 
                 cmtp_process_transmit(session);
diff --git a/net/bluetooth/hci_conn.c b/net/bluetooth/hci_conn.c
index ea7f031f3b04..c1c597e3e198 100644
--- a/net/bluetooth/hci_conn.c
+++ b/net/bluetooth/hci_conn.c
@@ -56,15 +56,15 @@ static void hci_le_connect(struct hci_conn *conn)
         conn->sec_level = BT_SECURITY_LOW;
 
         memset(&cp, 0, sizeof(cp));
-        cp.scan_interval = cpu_to_le16(0x0004);
-        cp.scan_window = cpu_to_le16(0x0004);
+        cp.scan_interval = cpu_to_le16(0x0060);
+        cp.scan_window = cpu_to_le16(0x0030);
         bacpy(&cp.peer_addr, &conn->dst);
         cp.peer_addr_type = conn->dst_type;
-        cp.conn_interval_min = cpu_to_le16(0x0008);
-        cp.conn_interval_max = cpu_to_le16(0x0100);
-        cp.supervision_timeout = cpu_to_le16(0x0064);
-        cp.min_ce_len = cpu_to_le16(0x0001);
-        cp.max_ce_len = cpu_to_le16(0x0001);
+        cp.conn_interval_min = cpu_to_le16(0x0028);
+        cp.conn_interval_max = cpu_to_le16(0x0038);
+        cp.supervision_timeout = cpu_to_le16(0x002a);
+        cp.min_ce_len = cpu_to_le16(0x0000);
+        cp.max_ce_len = cpu_to_le16(0x0000);
 
         hci_send_cmd(hdev, HCI_OP_LE_CREATE_CONN, sizeof(cp), &cp);
 }
@@ -218,7 +218,7 @@ void hci_le_start_enc(struct hci_conn *conn, __le16 ediv, __u8 rand[8],
         cp.handle = cpu_to_le16(conn->handle);
         memcpy(cp.ltk, ltk, sizeof(cp.ltk));
         cp.ediv = ediv;
-        memcpy(cp.rand, rand, sizeof(rand));
+        memcpy(cp.rand, rand, sizeof(cp.rand));
 
         hci_send_cmd(hdev, HCI_OP_LE_START_ENC, sizeof(cp), &cp);
 }
diff --git a/net/bluetooth/hci_core.c b/net/bluetooth/hci_core.c
index 56943add45cc..be84ae33ae36 100644
--- a/net/bluetooth/hci_core.c
+++ b/net/bluetooth/hci_core.c
@@ -613,7 +613,7 @@ static int hci_dev_do_close(struct hci_dev *hdev)
         if (!test_bit(HCI_RAW, &hdev->flags)) {
                 set_bit(HCI_INIT, &hdev->flags);
                 __hci_request(hdev, hci_reset_req, 0,
-                                        msecs_to_jiffies(250));
+                                        msecs_to_jiffies(HCI_INIT_TIMEOUT));
                 clear_bit(HCI_INIT, &hdev->flags);
         }
 
@@ -1312,59 +1312,41 @@ int hci_blacklist_clear(struct hci_dev *hdev)
 int hci_blacklist_add(struct hci_dev *hdev, bdaddr_t *bdaddr)
 {
         struct bdaddr_list *entry;
-        int err;
 
         if (bacmp(bdaddr, BDADDR_ANY) == 0)
                 return -EBADF;
 
-        hci_dev_lock_bh(hdev);
-
-        if (hci_blacklist_lookup(hdev, bdaddr)) {
-                err = -EEXIST;
-                goto err;
-        }
+        if (hci_blacklist_lookup(hdev, bdaddr))
+                return -EEXIST;
 
         entry = kzalloc(sizeof(struct bdaddr_list), GFP_KERNEL);
-        if (!entry) {
-                err = -ENOMEM;
-                goto err;
-        }
+        if (!entry)
+                return -ENOMEM;
 
         bacpy(&entry->bdaddr, bdaddr);
 
         list_add(&entry->list, &hdev->blacklist);
 
-        err = 0;
-
-err:
-        hci_dev_unlock_bh(hdev);
-        return err;
+        return mgmt_device_blocked(hdev->id, bdaddr);
 }
 
 int hci_blacklist_del(struct hci_dev *hdev, bdaddr_t *bdaddr)
 {
         struct bdaddr_list *entry;
-        int err = 0;
-
-        hci_dev_lock_bh(hdev);
 
         if (bacmp(bdaddr, BDADDR_ANY) == 0) {
-                hci_blacklist_clear(hdev);
-                goto done;
+                return hci_blacklist_clear(hdev);
         }
 
         entry = hci_blacklist_lookup(hdev, bdaddr);
         if (!entry) {
-                err = -ENOENT;
-                goto done;
+                return -ENOENT;
         }
 
         list_del(&entry->list);
         kfree(entry);
 
-done:
-        hci_dev_unlock_bh(hdev);
-        return err;
+        return mgmt_device_unblocked(hdev->id, bdaddr);
 }
 
 static void hci_clear_adv_cache(unsigned long arg)
@@ -1523,11 +1505,6 @@ int hci_register_dev(struct hci_dev *hdev)
         if (!hdev->workqueue)
                 goto nomem;
 
-        hdev->tfm = crypto_alloc_blkcipher("ecb(aes)", 0, CRYPTO_ALG_ASYNC);
-        if (IS_ERR(hdev->tfm))
-                BT_INFO("Failed to load transform for ecb(aes): %ld",
-                                                        PTR_ERR(hdev->tfm));
-
         hci_register_sysfs(hdev);
 
         hdev->rfkill = rfkill_alloc(hdev->name, &hdev->dev,
@@ -1576,9 +1553,6 @@ int hci_unregister_dev(struct hci_dev *hdev)
                                         !test_bit(HCI_SETUP, &hdev->flags))
                 mgmt_index_removed(hdev->id);
 
-        if (!IS_ERR(hdev->tfm))
-                crypto_free_blkcipher(hdev->tfm);
-
         hci_notify(hdev, HCI_DEV_UNREG);
 
         if (hdev->rfkill) {
@@ -2074,6 +2048,9 @@ static inline struct hci_conn *hci_low_sent(struct hci_dev *hdev, __u8 type, int
                         min  = c->sent;
                         conn = c;
                 }
+
+                if (hci_conn_num(hdev, type) == num)
+                        break;
         }
 
         if (conn) {
@@ -2131,6 +2108,9 @@ static inline void hci_sched_acl(struct hci_dev *hdev)
 
         BT_DBG("%s", hdev->name);
 
+        if (!hci_conn_num(hdev, ACL_LINK))
+                return;
+
         if (!test_bit(HCI_RAW, &hdev->flags)) {
                 /* ACL tx timeout must be longer than maximum
                  * link supervision timeout (40.9 seconds) */
@@ -2162,6 +2142,9 @@ static inline void hci_sched_sco(struct hci_dev *hdev)
 
         BT_DBG("%s", hdev->name);
 
+        if (!hci_conn_num(hdev, SCO_LINK))
+                return;
+
         while (hdev->sco_cnt && (conn = hci_low_sent(hdev, SCO_LINK, &quote))) {
                 while (quote-- && (skb = skb_dequeue(&conn->data_q))) {
                         BT_DBG("skb %p len %d", skb, skb->len);
@@ -2182,6 +2165,9 @@ static inline void hci_sched_esco(struct hci_dev *hdev)
 
         BT_DBG("%s", hdev->name);
 
+        if (!hci_conn_num(hdev, ESCO_LINK))
+                return;
+
         while (hdev->sco_cnt && (conn = hci_low_sent(hdev, ESCO_LINK, &quote))) {
                 while (quote-- && (skb = skb_dequeue(&conn->data_q))) {
                         BT_DBG("skb %p len %d", skb, skb->len);
@@ -2202,6 +2188,9 @@ static inline void hci_sched_le(struct hci_dev *hdev)
 
         BT_DBG("%s", hdev->name);
 
+        if (!hci_conn_num(hdev, LE_LINK))
+                return;
+
         if (!test_bit(HCI_RAW, &hdev->flags)) {
                 /* LE tx timeout must be longer than maximum
                  * link supervision timeout (40.9 seconds) */
diff --git a/net/bluetooth/hci_event.c b/net/bluetooth/hci_event.c
index 7ef4eb4435fb..d7d96b6b1f0d 100644
--- a/net/bluetooth/hci_event.c
+++ b/net/bluetooth/hci_event.c
@@ -898,16 +898,15 @@ static void hci_cc_le_set_scan_enable(struct hci_dev *hdev,
         if (!cp)
                 return;
 
-        hci_dev_lock(hdev);
-
         if (cp->enable == 0x01) {
                 del_timer(&hdev->adv_timer);
+
+                hci_dev_lock(hdev);
                 hci_adv_entries_clear(hdev);
+                hci_dev_unlock(hdev);
         } else if (cp->enable == 0x00) {
                 mod_timer(&hdev->adv_timer, jiffies + ADV_CLEAR_TIMEOUT);
         }
-
-        hci_dev_unlock(hdev);
 }
 
 static void hci_cc_le_ltk_reply(struct hci_dev *hdev, struct sk_buff *skb)
@@ -1103,9 +1102,10 @@ static int hci_outgoing_auth_needed(struct hci_dev *hdev,
                 return 0;
 
         /* Only request authentication for SSP connections or non-SSP
-         * devices with sec_level HIGH */
+         * devices with sec_level HIGH or if MITM protection is requested */
         if (!(hdev->ssp_mode > 0 && conn->ssp_mode > 0) &&
-                                conn->pending_sec_level != BT_SECURITY_HIGH)
+                                conn->pending_sec_level != BT_SECURITY_HIGH &&
+                                !(conn->auth_type & 0x01))
                 return 0;
 
         return 1;
@@ -1412,7 +1412,7 @@ static inline void hci_conn_complete_evt(struct hci_dev *hdev, struct sk_buff *s
                         conn->state = BT_CONFIG;
                         hci_conn_hold(conn);
                         conn->disc_timeout = HCI_DISCONN_TIMEOUT;
-                        mgmt_connected(hdev->id, &ev->bdaddr);
+                        mgmt_connected(hdev->id, &ev->bdaddr, conn->type);
                 } else
                         conn->state = BT_CONNECTED;
 
@@ -2174,7 +2174,10 @@ static inline void hci_pin_code_request_evt(struct hci_dev *hdev, struct sk_buff
         hci_dev_lock(hdev);
 
         conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
-        if (conn && conn->state == BT_CONNECTED) {
+        if (!conn)
+                goto unlock;
+
+        if (conn->state == BT_CONNECTED) {
                 hci_conn_hold(conn);
                 conn->disc_timeout = HCI_PAIRING_TIMEOUT;
                 hci_conn_put(conn);
@@ -2194,6 +2197,7 @@ static inline void hci_pin_code_request_evt(struct hci_dev *hdev, struct sk_buff
                 mgmt_pin_code_request(hdev->id, &ev->bdaddr, secure);
         }
 
+unlock:
         hci_dev_unlock(hdev);
 }
 
@@ -2816,7 +2820,7 @@ static inline void hci_le_conn_complete_evt(struct hci_dev *hdev, struct sk_buff
                 goto unlock;
         }
 
-        mgmt_connected(hdev->id, &ev->bdaddr);
+        mgmt_connected(hdev->id, &ev->bdaddr, conn->type);
 
         conn->sec_level = BT_SECURITY_LOW;
         conn->handle = __le16_to_cpu(ev->handle);
@@ -2834,19 +2838,17 @@ unlock:
 static inline void hci_le_adv_report_evt(struct hci_dev *hdev,
                                                 struct sk_buff *skb)
 {
-        struct hci_ev_le_advertising_info *ev;
-        u8 num_reports;
-
-        num_reports = skb->data[0];
-        ev = (void *) &skb->data[1];
+        u8 num_reports = skb->data[0];
+        void *ptr = &skb->data[1];
 
         hci_dev_lock(hdev);
 
-        hci_add_adv_entry(hdev, ev);
+        while (num_reports--) {
+                struct hci_ev_le_advertising_info *ev = ptr;
 
-        while (--num_reports) {
-                ev = (void *) (ev->data + ev->length + 1);
                 hci_add_adv_entry(hdev, ev);
+
+                ptr += sizeof(*ev) + ev->length + 1;
         }
 
         hci_dev_unlock(hdev);
diff --git a/net/bluetooth/hci_sock.c b/net/bluetooth/hci_sock.c
index ff02cf5e77cc..f6afe3d76a66 100644
--- a/net/bluetooth/hci_sock.c
+++ b/net/bluetooth/hci_sock.c
@@ -183,21 +183,35 @@ static int hci_sock_release(struct socket *sock)
 static int hci_sock_blacklist_add(struct hci_dev *hdev, void __user *arg)
 {
         bdaddr_t bdaddr;
+        int err;
 
         if (copy_from_user(&bdaddr, arg, sizeof(bdaddr)))
                 return -EFAULT;
 
-        return hci_blacklist_add(hdev, &bdaddr);
+        hci_dev_lock_bh(hdev);
+
+        err = hci_blacklist_add(hdev, &bdaddr);
+
+        hci_dev_unlock_bh(hdev);
+
+        return err;
 }
 
 static int hci_sock_blacklist_del(struct hci_dev *hdev, void __user *arg)
 {
         bdaddr_t bdaddr;
+        int err;
 
         if (copy_from_user(&bdaddr, arg, sizeof(bdaddr)))
                 return -EFAULT;
 
-        return hci_blacklist_del(hdev, &bdaddr);
+        hci_dev_lock_bh(hdev);
+
+        err = hci_blacklist_del(hdev, &bdaddr);
+
+        hci_dev_unlock_bh(hdev);
+
+        return err;
 }
 
 /* Ioctls that require bound socket */
diff --git a/net/bluetooth/hci_sysfs.c b/net/bluetooth/hci_sysfs.c
index a6c3aa8be1f7..661b461cf0b0 100644
--- a/net/bluetooth/hci_sysfs.c
+++ b/net/bluetooth/hci_sysfs.c
@@ -5,6 +5,7 @@
 #include <linux/init.h>
 #include <linux/debugfs.h>
 #include <linux/seq_file.h>
+#include <linux/module.h>
 
 #include <net/bluetooth/bluetooth.h>
 #include <net/bluetooth/hci_core.h>
@@ -23,6 +24,8 @@ static inline char *link_typetostr(int type)
                 return "SCO";
         case ESCO_LINK:
                 return "eSCO";
+        case LE_LINK:
+                return "LE";
         default:
                 return "UNKNOWN";
         }
diff --git a/net/bluetooth/hidp/core.c b/net/bluetooth/hidp/core.c
index fb68f344c34a..075a3e920caf 100644
--- a/net/bluetooth/hidp/core.c
+++ b/net/bluetooth/hidp/core.c
@@ -716,12 +716,18 @@ static int hidp_session(void *arg)
 
                 while ((skb = skb_dequeue(&ctrl_sk->sk_receive_queue))) {
                         skb_orphan(skb);
-                        hidp_recv_ctrl_frame(session, skb);
+                        if (!skb_linearize(skb))
+                                hidp_recv_ctrl_frame(session, skb);
+                        else
+                                kfree_skb(skb);
                 }
 
                 while ((skb = skb_dequeue(&intr_sk->sk_receive_queue))) {
                         skb_orphan(skb);
-                        hidp_recv_intr_frame(session, skb);
+                        if (!skb_linearize(skb))
+                                hidp_recv_intr_frame(session, skb);
+                        else
+                                kfree_skb(skb);
                 }
 
                 hidp_process_transmit(session);
@@ -872,6 +878,9 @@ static int hidp_start(struct hid_device *hid)
         struct hidp_session *session = hid->driver_data;
         struct hid_report *report;
 
+        if (hid->quirks & HID_QUIRK_NO_INIT_REPORTS)
+                return 0;
+
         list_for_each_entry(report, &hid->report_enum[HID_INPUT_REPORT].
                         report_list, list)
                 hidp_send_report(session, report);
diff --git a/net/bluetooth/l2cap_core.c b/net/bluetooth/l2cap_core.c
index b3bdb482bbe6..8cd12917733b 100644
--- a/net/bluetooth/l2cap_core.c
+++ b/net/bluetooth/l2cap_core.c
@@ -907,6 +907,9 @@ static void l2cap_conn_ready(struct l2cap_conn *conn)
         if (!conn->hcon->out && conn->hcon->type == LE_LINK)
                 l2cap_le_conn_ready(conn);
 
+        if (conn->hcon->out && conn->hcon->type == LE_LINK)
+                smp_conn_security(conn, conn->hcon->pending_sec_level);
+
         read_lock(&conn->chan_lock);
 
         list_for_each_entry(chan, &conn->chan_l, list) {
@@ -986,8 +989,10 @@ static void l2cap_conn_del(struct hci_conn *hcon, int err)
         if (conn->info_state & L2CAP_INFO_FEAT_MASK_REQ_SENT)
                 del_timer_sync(&conn->info_timer);
 
-        if (test_bit(HCI_CONN_ENCRYPT_PEND, &hcon->pend))
+        if (test_and_clear_bit(HCI_CONN_LE_SMP_PEND, &hcon->pend)) {
                 del_timer(&conn->security_timer);
+                smp_chan_destroy(conn);
+        }
 
         hcon->l2cap_data = NULL;
         kfree(conn);
@@ -1240,7 +1245,7 @@ static void l2cap_drop_acked_frames(struct l2cap_chan *chan)
                 __clear_retrans_timer(chan);
 }
 
-void l2cap_do_send(struct l2cap_chan *chan, struct sk_buff *skb)
+static void l2cap_do_send(struct l2cap_chan *chan, struct sk_buff *skb)
 {
         struct hci_conn *hcon = chan->conn->hcon;
         u16 flags;
@@ -1256,7 +1261,7 @@ void l2cap_do_send(struct l2cap_chan *chan, struct sk_buff *skb)
         hci_send_acl(hcon, skb, flags);
 }
 
-void l2cap_streaming_send(struct l2cap_chan *chan)
+static void l2cap_streaming_send(struct l2cap_chan *chan)
 {
         struct sk_buff *skb;
         u16 control, fcs;
@@ -1322,7 +1327,7 @@ static void l2cap_retransmit_one_frame(struct l2cap_chan *chan, u8 tx_seq)
         l2cap_do_send(chan, tx_skb);
 }
 
-int l2cap_ertm_send(struct l2cap_chan *chan)
+static int l2cap_ertm_send(struct l2cap_chan *chan)
 {
         struct sk_buff *skb, *tx_skb;
         u16 control, fcs;
@@ -1460,7 +1465,7 @@ static inline int l2cap_skbuff_fromiovec(struct sock *sk, struct msghdr *msg, in
         return sent;
 }
 
-struct sk_buff *l2cap_create_connless_pdu(struct l2cap_chan *chan, struct msghdr *msg, size_t len)
+static struct sk_buff *l2cap_create_connless_pdu(struct l2cap_chan *chan, struct msghdr *msg, size_t len)
 {
         struct sock *sk = chan->sk;
         struct l2cap_conn *conn = chan->conn;
@@ -1490,7 +1495,7 @@ struct sk_buff *l2cap_create_connless_pdu(struct l2cap_chan *chan, struct msghdr
         return skb;
 }
 
-struct sk_buff *l2cap_create_basic_pdu(struct l2cap_chan *chan, struct msghdr *msg, size_t len)
+static struct sk_buff *l2cap_create_basic_pdu(struct l2cap_chan *chan, struct msghdr *msg, size_t len)
 {
         struct sock *sk = chan->sk;
         struct l2cap_conn *conn = chan->conn;
@@ -1519,7 +1524,9 @@ struct sk_buff *l2cap_create_basic_pdu(struct l2cap_chan *chan, struct msghdr *m
         return skb;
 }
 
-struct sk_buff *l2cap_create_iframe_pdu(struct l2cap_chan *chan, struct msghdr *msg, size_t len, u16 control, u16 sdulen)
+static struct sk_buff *l2cap_create_iframe_pdu(struct l2cap_chan *chan,
+                                                struct msghdr *msg, size_t len,
+                                                u16 control, u16 sdulen)
 {
         struct sock *sk = chan->sk;
         struct l2cap_conn *conn = chan->conn;
@@ -1565,7 +1572,7 @@ struct sk_buff *l2cap_create_iframe_pdu(struct l2cap_chan *chan, struct msghdr *
         return skb;
 }
 
-int l2cap_sar_segment_sdu(struct l2cap_chan *chan, struct msghdr *msg, size_t len)
+static int l2cap_sar_segment_sdu(struct l2cap_chan *chan, struct msghdr *msg, size_t len)
 {
         struct sk_buff *skb;
         struct sk_buff_head sar_queue;
@@ -3121,102 +3128,104 @@ static int l2cap_add_to_srej_queue(struct l2cap_chan *chan, struct sk_buff *skb,
         return 0;
 }
 
-static int l2cap_ertm_reassembly_sdu(struct l2cap_chan *chan, struct sk_buff *skb, u16 control)
+static void append_skb_frag(struct sk_buff *skb,
+                        struct sk_buff *new_frag, struct sk_buff **last_frag)
 {
-        struct sk_buff *_skb;
-        int err;
+        /* skb->len reflects data in skb as well as all fragments
+         * skb->data_len reflects only data in fragments
+         */
+        if (!skb_has_frag_list(skb))
+                skb_shinfo(skb)->frag_list = new_frag;
+
+        new_frag->next = NULL;
+
+        (*last_frag)->next = new_frag;
+        *last_frag = new_frag;
+
+        skb->len += new_frag->len;
+        skb->data_len += new_frag->len;
+        skb->truesize += new_frag->truesize;
+}
+
+static int l2cap_reassemble_sdu(struct l2cap_chan *chan, struct sk_buff *skb, u16 control)
+{
+        int err = -EINVAL;
 
         switch (control & L2CAP_CTRL_SAR) {
         case L2CAP_SDU_UNSEGMENTED:
-                if (test_bit(CONN_SAR_SDU, &chan->conn_state))
-                        goto drop;
+                if (chan->sdu)
+                        break;
 
-                return chan->ops->recv(chan->data, skb);
+                err = chan->ops->recv(chan->data, skb);
+                break;
 
         case L2CAP_SDU_START:
-                if (test_bit(CONN_SAR_SDU, &chan->conn_state))
-                        goto drop;
+                if (chan->sdu)
+                        break;
 
                 chan->sdu_len = get_unaligned_le16(skb->data);
+                skb_pull(skb, 2);
 
-                if (chan->sdu_len > chan->imtu)
-                        goto disconnect;
-
-                chan->sdu = bt_skb_alloc(chan->sdu_len, GFP_ATOMIC);
-                if (!chan->sdu)
-                        return -ENOMEM;
+                if (chan->sdu_len > chan->imtu) {
+                        err = -EMSGSIZE;
+                        break;
+                }
 
-                /* pull sdu_len bytes only after alloc, because of Local Busy
-                 * condition we have to be sure that this will be executed
-                 * only once, i.e., when alloc does not fail */
-                skb_pull(skb, 2);
+                if (skb->len >= chan->sdu_len)
+                        break;
 
-                memcpy(skb_put(chan->sdu, skb->len), skb->data, skb->len);
+                chan->sdu = skb;
+                chan->sdu_last_frag = skb;
 
-                set_bit(CONN_SAR_SDU, &chan->conn_state);
-                chan->partial_sdu_len = skb->len;
+                skb = NULL;
+                err = 0;
                 break;
 
         case L2CAP_SDU_CONTINUE:
-                if (!test_bit(CONN_SAR_SDU, &chan->conn_state))
-                        goto disconnect;
-
                 if (!chan->sdu)
-                        goto disconnect;
+                        break;
 
-                chan->partial_sdu_len += skb->len;
-                if (chan->partial_sdu_len > chan->sdu_len)
-                        goto drop;
+                append_skb_frag(chan->sdu, skb,
+                                &chan->sdu_last_frag);
+                skb = NULL;
 
-                memcpy(skb_put(chan->sdu, skb->len), skb->data, skb->len);
+                if (chan->sdu->len >= chan->sdu_len)
+                        break;
 
+                err = 0;
                 break;
 
         case L2CAP_SDU_END:
-                if (!test_bit(CONN_SAR_SDU, &chan->conn_state))
-                        goto disconnect;
-
                 if (!chan->sdu)
-                        goto disconnect;
-
-                chan->partial_sdu_len += skb->len;
-
-                if (chan->partial_sdu_len > chan->imtu)
-                        goto drop;
+                        break;
 
-                if (chan->partial_sdu_len != chan->sdu_len)
-                        goto drop;
+                append_skb_frag(chan->sdu, skb,
+                                &chan->sdu_last_frag);
+                skb = NULL;
 
-                memcpy(skb_put(chan->sdu, skb->len), skb->data, skb->len);
+                if (chan->sdu->len != chan->sdu_len)
+                        break;
 
-                _skb = skb_clone(chan->sdu, GFP_ATOMIC);
-                if (!_skb) {
-                        return -ENOMEM;
-                }
+                err = chan->ops->recv(chan->data, chan->sdu);
 
-                err = chan->ops->recv(chan->data, _skb);
-                if (err < 0) {
-                        kfree_skb(_skb);
-                        return err;
+                if (!err) {
+                        /* Reassembly complete */
+                        chan->sdu = NULL;
+                        chan->sdu_last_frag = NULL;
+                        chan->sdu_len = 0;
                 }
-
-                clear_bit(CONN_SAR_SDU, &chan->conn_state);
-
-                kfree_skb(chan->sdu);
                 break;
         }
 
-        kfree_skb(skb);
-        return 0;
-
-drop:
-        kfree_skb(chan->sdu);
-        chan->sdu = NULL;
+        if (err) {
+                kfree_skb(skb);
+                kfree_skb(chan->sdu);
+                chan->sdu = NULL;
+                chan->sdu_last_frag = NULL;
+                chan->sdu_len = 0;
+        }
 
-disconnect:
-        l2cap_send_disconn_req(chan->conn, chan, ECONNRESET);
-        kfree_skb(skb);
-        return 0;
+        return err;
 }
 
 static void l2cap_ertm_enter_local_busy(struct l2cap_chan *chan)
@@ -3270,99 +3279,6 @@ void l2cap_chan_busy(struct l2cap_chan *chan, int busy)
         }
 }
 
-static int l2cap_streaming_reassembly_sdu(struct l2cap_chan *chan, struct sk_buff *skb, u16 control)
-{
-        struct sk_buff *_skb;
-        int err = -EINVAL;
-
-        /*
-         * TODO: We have to notify the userland if some data is lost with the
-         * Streaming Mode.
-         */
-
-        switch (control & L2CAP_CTRL_SAR) {
-        case L2CAP_SDU_UNSEGMENTED:
-                if (test_bit(CONN_SAR_SDU, &chan->conn_state)) {
-                        kfree_skb(chan->sdu);
-                        break;
-                }
-
-                err = chan->ops->recv(chan->data, skb);
-                if (!err)
-                        return 0;
-
-                break;
-
-        case L2CAP_SDU_START:
-                if (test_bit(CONN_SAR_SDU, &chan->conn_state)) {
-                        kfree_skb(chan->sdu);
-                        break;
-                }
-
-                chan->sdu_len = get_unaligned_le16(skb->data);
-                skb_pull(skb, 2);
-
-                if (chan->sdu_len > chan->imtu) {
-                        err = -EMSGSIZE;
-                        break;
-                }
-
-                chan->sdu = bt_skb_alloc(chan->sdu_len, GFP_ATOMIC);
-                if (!chan->sdu) {
-                        err = -ENOMEM;
-                        break;
-                }
-
-                memcpy(skb_put(chan->sdu, skb->len), skb->data, skb->len);
-
-                set_bit(CONN_SAR_SDU, &chan->conn_state);
-                chan->partial_sdu_len = skb->len;
-                err = 0;
-                break;
-
-        case L2CAP_SDU_CONTINUE:
-                if (!test_bit(CONN_SAR_SDU, &chan->conn_state))
-                        break;
-
-                memcpy(skb_put(chan->sdu, skb->len), skb->data, skb->len);
-
-                chan->partial_sdu_len += skb->len;
-                if (chan->partial_sdu_len > chan->sdu_len)
-                        kfree_skb(chan->sdu);
-                else
-                        err = 0;
-
-                break;
-
-        case L2CAP_SDU_END:
-                if (!test_bit(CONN_SAR_SDU, &chan->conn_state))
-                        break;
-
-                memcpy(skb_put(chan->sdu, skb->len), skb->data, skb->len);
-
-                clear_bit(CONN_SAR_SDU, &chan->conn_state);
-                chan->partial_sdu_len += skb->len;
-
-                if (chan->partial_sdu_len > chan->imtu)
-                        goto drop;
-
-                if (chan->partial_sdu_len == chan->sdu_len) {
-                        _skb = skb_clone(chan->sdu, GFP_ATOMIC);
-                        err = chan->ops->recv(chan->data, _skb);
-                        if (err < 0)
-                                kfree_skb(_skb);
-                }
-                err = 0;
-
-drop:
-                kfree_skb(chan->sdu);
-                break;
-        }
-
-        kfree_skb(skb);
-        return err;
-}
-
 static void l2cap_check_srej_gap(struct l2cap_chan *chan, u8 tx_seq)
 {
         struct sk_buff *skb;
@@ -3377,7 +3293,7 @@ static void l2cap_check_srej_gap(struct l2cap_chan *chan, u8 tx_seq)
 
                 skb = skb_dequeue(&chan->srej_q);
                 control = bt_cb(skb)->sar << L2CAP_CTRL_SAR_SHIFT;
-                err = l2cap_ertm_reassembly_sdu(chan, skb, control);
+                err = l2cap_reassemble_sdu(chan, skb, control);
 
                 if (err < 0) {
                         l2cap_send_disconn_req(chan->conn, chan, ECONNRESET);
@@ -3537,7 +3453,7 @@ expected:
                 return 0;
         }
 
-        err = l2cap_ertm_reassembly_sdu(chan, skb, rx_control);
+        err = l2cap_reassemble_sdu(chan, skb, rx_control);
         chan->buffer_seq = (chan->buffer_seq + 1) % 64;
         if (err < 0) {
                 l2cap_send_disconn_req(chan->conn, chan, ECONNRESET);
@@ -3853,12 +3769,20 @@ static inline int l2cap_data_channel(struct l2cap_conn *conn, u16 cid, struct sk
 
                 tx_seq = __get_txseq(control);
 
-                if (chan->expected_tx_seq == tx_seq)
-                        chan->expected_tx_seq = (chan->expected_tx_seq + 1) % 64;
-                else
-                        chan->expected_tx_seq = (tx_seq + 1) % 64;
+                if (chan->expected_tx_seq != tx_seq) {
+                        /* Frame(s) missing - must discard partial SDU */
+                        kfree_skb(chan->sdu);
+                        chan->sdu = NULL;
+                        chan->sdu_last_frag = NULL;
+                        chan->sdu_len = 0;
+
+                        /* TODO: Notify userland of missing data */
+                }
+
+                chan->expected_tx_seq = (tx_seq + 1) % 64;
 
-                l2cap_streaming_reassembly_sdu(chan, skb, control);
+                if (l2cap_reassemble_sdu(chan, skb, control) == -EMSGSIZE)
+                        l2cap_send_disconn_req(chan->conn, chan, ECONNRESET);
 
                 goto done;
 
@@ -4093,6 +4017,11 @@ static int l2cap_security_cfm(struct hci_conn *hcon, u8 status, u8 encrypt)
 
         BT_DBG("conn %p", conn);
 
+        if (hcon->type == LE_LINK) {
+                smp_distribute_keys(conn, 0);
+                del_timer(&conn->security_timer);
+        }
+
         read_lock(&conn->chan_lock);
 
         list_for_each_entry(chan, &conn->chan_l, list) {
@@ -4105,9 +4034,7 @@ static int l2cap_security_cfm(struct hci_conn *hcon, u8 status, u8 encrypt)
                 if (chan->scid == L2CAP_CID_LE_DATA) {
                         if (!status && encrypt) {
                                 chan->sec_level = hcon->sec_level;
-                                del_timer(&conn->security_timer);
                                 l2cap_chan_ready(sk);
-                                smp_distribute_keys(conn, 0);
                         }
 
                         bh_unlock_sock(sk);
diff --git a/net/bluetooth/l2cap_sock.c b/net/bluetooth/l2cap_sock.c
index e8292369cdcf..5c406d3136f7 100644
--- a/net/bluetooth/l2cap_sock.c
+++ b/net/bluetooth/l2cap_sock.c
@@ -27,6 +27,7 @@
 /* Bluetooth L2CAP sockets. */
 
 #include <linux/security.h>
+#include <linux/export.h>
 
 #include <net/bluetooth/bluetooth.h>
 #include <net/bluetooth/hci_core.h>
diff --git a/net/bluetooth/mgmt.c b/net/bluetooth/mgmt.c
index 53e109eb043e..2c7634296866 100644
--- a/net/bluetooth/mgmt.c
+++ b/net/bluetooth/mgmt.c
@@ -23,6 +23,7 @@
 /* Bluetooth HCI Management interface */
 
 #include <linux/uaccess.h>
+#include <linux/module.h>
 #include <asm/unaligned.h>
 
 #include <net/bluetooth/bluetooth.h>
@@ -147,8 +148,6 @@ static int read_index_list(struct sock *sk)
 
                 hci_del_off_timer(d);
 
-                set_bit(HCI_MGMT, &d->flags);
-
                 if (test_bit(HCI_SETUP, &d->flags))
                         continue;
 
@@ -908,7 +907,7 @@ static int load_keys(struct sock *sk, u16 index, unsigned char *data, u16 len)
         struct hci_dev *hdev;
         struct mgmt_cp_load_keys *cp;
         u16 key_count, expected_len;
-        int i, err;
+        int i;
 
         cp = (void *) data;
 
@@ -918,9 +917,9 @@ static int load_keys(struct sock *sk, u16 index, unsigned char *data, u16 len)
         key_count = get_unaligned_le16(&cp->key_count);
 
         expected_len = sizeof(*cp) + key_count * sizeof(struct mgmt_key_info);
-        if (expected_len > len) {
-                BT_ERR("load_keys: expected at least %u bytes, got %u bytes",
-                                                        expected_len, len);
+        if (expected_len != len) {
+                BT_ERR("load_keys: expected %u bytes, got %u bytes",
+                                                        len, expected_len);
                 return -EINVAL;
         }
 
@@ -942,36 +941,17 @@ static int load_keys(struct sock *sk, u16 index, unsigned char *data, u16 len)
         else
                 clear_bit(HCI_DEBUG_KEYS, &hdev->flags);
 
-        len -= sizeof(*cp);
-        i = 0;
-
-        while (i < len) {
-                struct mgmt_key_info *key = (void *) cp->keys + i;
-
-                i += sizeof(*key) + key->dlen;
-
-                if (key->type == HCI_LK_SMP_LTK) {
-                        struct key_master_id *id = (void *) key->data;
-
-                        if (key->dlen != sizeof(struct key_master_id))
-                                continue;
-
-                        hci_add_ltk(hdev, 0, &key->bdaddr, key->pin_len,
-                                                id->ediv, id->rand, key->val);
-
-                        continue;
-                }
+        for (i = 0; i < key_count; i++) {
+                struct mgmt_key_info *key = &cp->keys[i];
 
                 hci_add_link_key(hdev, NULL, 0, &key->bdaddr, key->val, key->type,
                                                                 key->pin_len);
         }
 
-        err = cmd_complete(sk, index, MGMT_OP_LOAD_KEYS, NULL, 0);
-
         hci_dev_unlock_bh(hdev);
         hci_dev_put(hdev);
 
-        return err;
+        return 0;
 }
 
 static int remove_key(struct sock *sk, u16 index, unsigned char *data, u16 len)
@@ -1347,6 +1327,7 @@ static int pair_device(struct sock *sk, u16 index, unsigned char *data, u16 len)
         struct hci_dev *hdev;
         struct mgmt_cp_pair_device *cp;
         struct pending_cmd *cmd;
+        struct adv_entry *entry;
         u8 sec_level, auth_type;
         struct hci_conn *conn;
         int err;
@@ -1364,15 +1345,20 @@ static int pair_device(struct sock *sk, u16 index, unsigned char *data, u16 len)
 
         hci_dev_lock_bh(hdev);
 
-        if (cp->io_cap == 0x03) {
-                sec_level = BT_SECURITY_MEDIUM;
+        sec_level = BT_SECURITY_MEDIUM;
+        if (cp->io_cap == 0x03)
                 auth_type = HCI_AT_DEDICATED_BONDING;
-        } else {
-                sec_level = BT_SECURITY_HIGH;
+        else
                 auth_type = HCI_AT_DEDICATED_BONDING_MITM;
-        }
 
-        conn = hci_connect(hdev, ACL_LINK, &cp->bdaddr, sec_level, auth_type);
+        entry = hci_find_adv_entry(hdev, &cp->bdaddr);
+        if (entry)
+                conn = hci_connect(hdev, LE_LINK, &cp->bdaddr, sec_level,
+                                                                auth_type);
+        else
+                conn = hci_connect(hdev, ACL_LINK, &cp->bdaddr, sec_level,
+                                                                auth_type);
+
         if (IS_ERR(conn)) {
                 err = PTR_ERR(conn);
                 goto unlock;
@@ -1391,7 +1377,10 @@ static int pair_device(struct sock *sk, u16 index, unsigned char *data, u16 len)
                 goto unlock;
         }
 
-        conn->connect_cfm_cb = pairing_complete_cb;
+        /* For LE, just connecting isn't a proof that the pairing finished */
+        if (!entry)
+                conn->connect_cfm_cb = pairing_complete_cb;
+
         conn->security_cfm_cb = pairing_complete_cb;
         conn->disconn_cfm_cb = pairing_complete_cb;
         conn->io_capability = cp->io_cap;
@@ -1689,13 +1678,12 @@ static int block_device(struct sock *sk, u16 index, unsigned char *data,
                                                                 u16 len)
 {
         struct hci_dev *hdev;
-        struct mgmt_cp_block_device *cp;
+        struct pending_cmd *cmd;
+        struct mgmt_cp_block_device *cp = (void *) data;
         int err;
 
         BT_DBG("hci%u", index);
 
-        cp = (void *) data;
-
         if (len != sizeof(*cp))
                 return cmd_status(sk, index, MGMT_OP_BLOCK_DEVICE,
                                                         EINVAL);
@@ -1705,6 +1693,14 @@ static int block_device(struct sock *sk, u16 index, unsigned char *data,
                 return cmd_status(sk, index, MGMT_OP_BLOCK_DEVICE,
                                                         ENODEV);
 
+        hci_dev_lock_bh(hdev);
+
+        cmd = mgmt_pending_add(sk, MGMT_OP_BLOCK_DEVICE, index, NULL, 0);
+        if (!cmd) {
+                err = -ENOMEM;
+                goto failed;
+        }
+
         err = hci_blacklist_add(hdev, &cp->bdaddr);
 
         if (err < 0)
@@ -1712,6 +1708,11 @@ static int block_device(struct sock *sk, u16 index, unsigned char *data,
         else
                 err = cmd_complete(sk, index, MGMT_OP_BLOCK_DEVICE,
                                                         NULL, 0);
+
+        mgmt_pending_remove(cmd);
+
+failed:
+        hci_dev_unlock_bh(hdev);
         hci_dev_put(hdev);
 
         return err;
@@ -1721,13 +1722,12 @@ static int unblock_device(struct sock *sk, u16 index, unsigned char *data,
                                                                 u16 len)
 {
         struct hci_dev *hdev;
-        struct mgmt_cp_unblock_device *cp;
+        struct pending_cmd *cmd;
+        struct mgmt_cp_unblock_device *cp = (void *) data;
         int err;
 
         BT_DBG("hci%u", index);
 
-        cp = (void *) data;
-
         if (len != sizeof(*cp))
                 return cmd_status(sk, index, MGMT_OP_UNBLOCK_DEVICE,
                                                                 EINVAL);
@@ -1737,6 +1737,14 @@ static int unblock_device(struct sock *sk, u16 index, unsigned char *data,
                 return cmd_status(sk, index, MGMT_OP_UNBLOCK_DEVICE,
                                                                 ENODEV);
 
+        hci_dev_lock_bh(hdev);
+
+        cmd = mgmt_pending_add(sk, MGMT_OP_UNBLOCK_DEVICE, index, NULL, 0);
+        if (!cmd) {
+                err = -ENOMEM;
+                goto failed;
+        }
+
         err = hci_blacklist_del(hdev, &cp->bdaddr);
 
         if (err < 0)
@@ -1744,6 +1752,67 @@ static int unblock_device(struct sock *sk, u16 index, unsigned char *data,
         else
                 err = cmd_complete(sk, index, MGMT_OP_UNBLOCK_DEVICE,
                                                                 NULL, 0);
+
+        mgmt_pending_remove(cmd);
+
+failed:
+        hci_dev_unlock_bh(hdev);
+        hci_dev_put(hdev);
+
+        return err;
+}
+
+static int set_fast_connectable(struct sock *sk, u16 index,
+                                        unsigned char *data, u16 len)
+{
+        struct hci_dev *hdev;
+        struct mgmt_cp_set_fast_connectable *cp = (void *) data;
+        struct hci_cp_write_page_scan_activity acp;
+        u8 type;
+        int err;
+
+        BT_DBG("hci%u", index);
+
+        if (len != sizeof(*cp))
+                return cmd_status(sk, index, MGMT_OP_SET_FAST_CONNECTABLE,
+                                                                EINVAL);
+
+        hdev = hci_dev_get(index);
+        if (!hdev)
+                return cmd_status(sk, index, MGMT_OP_SET_FAST_CONNECTABLE,
+                                                                ENODEV);
+
+        hci_dev_lock(hdev);
+
+        if (cp->enable) {
+                type = PAGE_SCAN_TYPE_INTERLACED;
+                acp.interval = 0x0024;  /* 22.5 msec page scan interval */
+        } else {
+                type = PAGE_SCAN_TYPE_STANDARD; /* default */
+                acp.interval = 0x0800;  /* default 1.28 sec page scan */
+        }
+
+        acp.window = 0x0012;    /* default 11.25 msec page scan window */
+
+        err = hci_send_cmd(hdev, HCI_OP_WRITE_PAGE_SCAN_ACTIVITY,
+                                                sizeof(acp), &acp);
+        if (err < 0) {
+                err = cmd_status(sk, index, MGMT_OP_SET_FAST_CONNECTABLE,
+                                                                -err);
+                goto done;
+        }
+
+        err = hci_send_cmd(hdev, HCI_OP_WRITE_PAGE_SCAN_TYPE, 1, &type);
+        if (err < 0) {
+                err = cmd_status(sk, index, MGMT_OP_SET_FAST_CONNECTABLE,
+                                                                -err);
+                goto done;
+        }
+
+        err = cmd_complete(sk, index, MGMT_OP_SET_FAST_CONNECTABLE,
+                                                        NULL, 0);
+done:
+        hci_dev_unlock(hdev);
         hci_dev_put(hdev);
 
         return err;
@@ -1869,6 +1938,10 @@ int mgmt_control(struct sock *sk, struct msghdr *msg, size_t msglen)
         case MGMT_OP_UNBLOCK_DEVICE:
                 err = unblock_device(sk, index, buf + sizeof(*hdr), len);
                 break;
+        case MGMT_OP_SET_FAST_CONNECTABLE:
+                err = set_fast_connectable(sk, index, buf + sizeof(*hdr),
+                                                                len);
+                break;
         default:
                 BT_DBG("Unknown op %u", opcode);
                 err = cmd_status(sk, index, opcode, 0x01);
@@ -1977,35 +2050,25 @@ int mgmt_connectable(u16 index, u8 connectable)
 
 int mgmt_new_key(u16 index, struct link_key *key, u8 persistent)
 {
-        struct mgmt_ev_new_key *ev;
-        int err, total;
-
-        total = sizeof(struct mgmt_ev_new_key) + key->dlen;
-        ev = kzalloc(total, GFP_ATOMIC);
-        if (!ev)
-                return -ENOMEM;
-
-        bacpy(&ev->key.bdaddr, &key->bdaddr);
-        ev->key.type = key->type;
-        memcpy(ev->key.val, key->val, 16);
-        ev->key.pin_len = key->pin_len;
-        ev->key.dlen = key->dlen;
-        ev->store_hint = persistent;
+        struct mgmt_ev_new_key ev;
 
-        memcpy(ev->key.data, key->data, key->dlen);
-
-        err = mgmt_event(MGMT_EV_NEW_KEY, index, ev, total, NULL);
+        memset(&ev, 0, sizeof(ev));
 
-        kfree(ev);
+        ev.store_hint = persistent;
+        bacpy(&ev.key.bdaddr, &key->bdaddr);
+        ev.key.type = key->type;
+        memcpy(ev.key.val, key->val, 16);
+        ev.key.pin_len = key->pin_len;
 
-        return err;
+        return mgmt_event(MGMT_EV_NEW_KEY, index, &ev, sizeof(ev), NULL);
 }
 
-int mgmt_connected(u16 index, bdaddr_t *bdaddr)
+int mgmt_connected(u16 index, bdaddr_t *bdaddr, u8 link_type)
 {
         struct mgmt_ev_connected ev;
 
         bacpy(&ev.bdaddr, bdaddr);
+        ev.link_type = link_type;
 
         return mgmt_event(MGMT_EV_CONNECTED, index, &ev, sizeof(ev), NULL);
 }
@@ -2260,12 +2323,14 @@ int mgmt_device_found(u16 index, bdaddr_t *bdaddr, u8 *dev_class, s8 rssi,
         memset(&ev, 0, sizeof(ev));
 
         bacpy(&ev.bdaddr, bdaddr);
-        memcpy(ev.dev_class, dev_class, sizeof(ev.dev_class));
         ev.rssi = rssi;
 
         if (eir)
                 memcpy(ev.eir, eir, sizeof(ev.eir));
 
+        if (dev_class)
+                memcpy(ev.dev_class, dev_class, sizeof(ev.dev_class));
+
         return mgmt_event(MGMT_EV_DEVICE_FOUND, index, &ev, sizeof(ev), NULL);
 }
 
@@ -2286,3 +2351,29 @@ int mgmt_discovering(u16 index, u8 discovering)
         return mgmt_event(MGMT_EV_DISCOVERING, index, &discovering,
                                                 sizeof(discovering), NULL);
 }
+
+int mgmt_device_blocked(u16 index, bdaddr_t *bdaddr)
+{
+        struct pending_cmd *cmd;
+        struct mgmt_ev_device_blocked ev;
+
+        cmd = mgmt_pending_find(MGMT_OP_BLOCK_DEVICE, index);
+
+        bacpy(&ev.bdaddr, bdaddr);
+
+        return mgmt_event(MGMT_EV_DEVICE_BLOCKED, index, &ev, sizeof(ev),
+                                                cmd ? cmd->sk : NULL);
+}
+
+int mgmt_device_unblocked(u16 index, bdaddr_t *bdaddr)
+{
+        struct pending_cmd *cmd;
+        struct mgmt_ev_device_unblocked ev;
+
+        cmd = mgmt_pending_find(MGMT_OP_UNBLOCK_DEVICE, index);
+
+        bacpy(&ev.bdaddr, bdaddr);
+
+        return mgmt_event(MGMT_EV_DEVICE_UNBLOCKED, index, &ev, sizeof(ev),
+                                                cmd ? cmd->sk : NULL);
+}
diff --git a/net/bluetooth/rfcomm/core.c b/net/bluetooth/rfcomm/core.c
index 5ba3f6df665c..4e32e18211f9 100644
--- a/net/bluetooth/rfcomm/core.c
+++ b/net/bluetooth/rfcomm/core.c
@@ -1802,6 +1802,11 @@ static inline void rfcomm_process_dlcs(struct rfcomm_session *s)
                         continue;
                 }
 
+                if (test_bit(RFCOMM_ENC_DROP, &d->flags)) {
+                        __rfcomm_dlc_close(d, ECONNREFUSED);
+                        continue;
+                }
+
                 if (test_and_clear_bit(RFCOMM_AUTH_ACCEPT, &d->flags)) {
                         rfcomm_dlc_clear_timer(d);
                         if (d->out) {
@@ -1853,7 +1858,10 @@ static inline void rfcomm_process_rx(struct rfcomm_session *s)
         /* Get data directly from socket receive queue without copying it. */
         while ((skb = skb_dequeue(&sk->sk_receive_queue))) {
                 skb_orphan(skb);
-                rfcomm_recv_frame(s, skb);
+                if (!skb_linearize(skb))
+                        rfcomm_recv_frame(s, skb);
+                else
+                        kfree_skb(skb);
         }
 
         if (sk->sk_state == BT_CLOSED) {
@@ -2074,7 +2082,7 @@ static void rfcomm_security_cfm(struct hci_conn *conn, u8 status, u8 encrypt)
                 if (test_and_clear_bit(RFCOMM_SEC_PENDING, &d->flags)) {
                         rfcomm_dlc_clear_timer(d);
                         if (status || encrypt == 0x00) {
-                                __rfcomm_dlc_close(d, ECONNREFUSED);
+                                set_bit(RFCOMM_ENC_DROP, &d->flags);
                                 continue;
                         }
                 }
@@ -2085,7 +2093,7 @@ static void rfcomm_security_cfm(struct hci_conn *conn, u8 status, u8 encrypt)
                                 rfcomm_dlc_set_timer(d, RFCOMM_AUTH_TIMEOUT);
                                 continue;
                         } else if (d->sec_level == BT_SECURITY_HIGH) {
-                                __rfcomm_dlc_close(d, ECONNREFUSED);
+                                set_bit(RFCOMM_ENC_DROP, &d->flags);
                                 continue;
                         }
                 }
diff --git a/net/bluetooth/smp.c b/net/bluetooth/smp.c
index 391888b88a92..759b63572641 100644
--- a/net/bluetooth/smp.c
+++ b/net/bluetooth/smp.c
@@ -182,18 +182,9 @@ static void smp_send_cmd(struct l2cap_conn *conn, u8 code, u16 len, void *data)
                 return;
 
         hci_send_acl(conn->hcon, skb, 0);
-}
-
-static __u8 seclevel_to_authreq(__u8 level)
-{
-        switch (level) {
-        case BT_SECURITY_HIGH:
-                /* Right now we don't support bonding */
-                return SMP_AUTH_MITM;
 
-        default:
-                return SMP_AUTH_NONE;
-        }
+        mod_timer(&conn->security_timer, jiffies +
+                                        msecs_to_jiffies(SMP_TIMEOUT));
 }
 
 static void build_pairing_cmd(struct l2cap_conn *conn,
@@ -205,7 +196,7 @@ static void build_pairing_cmd(struct l2cap_conn *conn,
 
         dist_keys = 0;
         if (test_bit(HCI_PAIRABLE, &conn->hcon->hdev->flags)) {
-                dist_keys = SMP_DIST_ENC_KEY | SMP_DIST_ID_KEY | SMP_DIST_SIGN;
+                dist_keys = SMP_DIST_ENC_KEY;
                 authreq |= SMP_AUTH_BONDING;
         }
 
@@ -229,24 +220,184 @@ static void build_pairing_cmd(struct l2cap_conn *conn,
 
 static u8 check_enc_key_size(struct l2cap_conn *conn, __u8 max_key_size)
 {
+        struct smp_chan *smp = conn->smp_chan;
+
         if ((max_key_size > SMP_MAX_ENC_KEY_SIZE) ||
                         (max_key_size < SMP_MIN_ENC_KEY_SIZE))
                 return SMP_ENC_KEY_SIZE;
 
-        conn->smp_key_size = max_key_size;
+        smp->smp_key_size = max_key_size;
 
         return 0;
 }
 
+static void confirm_work(struct work_struct *work)
+{
+        struct smp_chan *smp = container_of(work, struct smp_chan, confirm);
+        struct l2cap_conn *conn = smp->conn;
+        struct crypto_blkcipher *tfm;
+        struct smp_cmd_pairing_confirm cp;
+        int ret;
+        u8 res[16], reason;
+
+        BT_DBG("conn %p", conn);
+
+        tfm = crypto_alloc_blkcipher("ecb(aes)", 0, CRYPTO_ALG_ASYNC);
+        if (IS_ERR(tfm)) {
+                reason = SMP_UNSPECIFIED;
+                goto error;
+        }
+
+        smp->tfm = tfm;
+
+        if (conn->hcon->out)
+                ret = smp_c1(tfm, smp->tk, smp->prnd, smp->preq, smp->prsp, 0,
+                                conn->src, conn->hcon->dst_type, conn->dst,
+                                res);
+        else
+                ret = smp_c1(tfm, smp->tk, smp->prnd, smp->preq, smp->prsp,
+                                conn->hcon->dst_type, conn->dst, 0, conn->src,
+                                res);
+        if (ret) {
+                reason = SMP_UNSPECIFIED;
+                goto error;
+        }
+
+        swap128(res, cp.confirm_val);
+        smp_send_cmd(smp->conn, SMP_CMD_PAIRING_CONFIRM, sizeof(cp), &cp);
+
+        return;
+
+error:
+        smp_send_cmd(conn, SMP_CMD_PAIRING_FAIL, sizeof(reason), &reason);
+        smp_chan_destroy(conn);
+}
+
+static void random_work(struct work_struct *work)
+{
+        struct smp_chan *smp = container_of(work, struct smp_chan, random);
+        struct l2cap_conn *conn = smp->conn;
+        struct hci_conn *hcon = conn->hcon;
+        struct crypto_blkcipher *tfm = smp->tfm;
+        u8 reason, confirm[16], res[16], key[16];
+        int ret;
+
+        if (IS_ERR_OR_NULL(tfm)) {
+                reason = SMP_UNSPECIFIED;
+                goto error;
+        }
+
+        BT_DBG("conn %p %s", conn, conn->hcon->out ? "master" : "slave");
+
+        if (hcon->out)
+                ret = smp_c1(tfm, smp->tk, smp->rrnd, smp->preq, smp->prsp, 0,
+                                conn->src, hcon->dst_type, conn->dst,
+                                res);
+        else
+                ret = smp_c1(tfm, smp->tk, smp->rrnd, smp->preq, smp->prsp,
+                                hcon->dst_type, conn->dst, 0, conn->src,
+                                res);
+        if (ret) {
+                reason = SMP_UNSPECIFIED;
+                goto error;
+        }
+
+        swap128(res, confirm);
+
+        if (memcmp(smp->pcnf, confirm, sizeof(smp->pcnf)) != 0) {
+                BT_ERR("Pairing failed (confirmation values mismatch)");
+                reason = SMP_CONFIRM_FAILED;
+                goto error;
+        }
+
+        if (hcon->out) {
+                u8 stk[16], rand[8];
+                __le16 ediv;
+
+                memset(rand, 0, sizeof(rand));
+                ediv = 0;
+
+                smp_s1(tfm, smp->tk, smp->rrnd, smp->prnd, key);
+                swap128(key, stk);
+
+                memset(stk + smp->smp_key_size, 0,
+                                SMP_MAX_ENC_KEY_SIZE - smp->smp_key_size);
+
+                if (test_and_set_bit(HCI_CONN_ENCRYPT_PEND, &hcon->pend)) {
+                        reason = SMP_UNSPECIFIED;
+                        goto error;
+                }
+
+                hci_le_start_enc(hcon, ediv, rand, stk);
+                hcon->enc_key_size = smp->smp_key_size;
+        } else {
+                u8 stk[16], r[16], rand[8];
+                __le16 ediv;
+
+                memset(rand, 0, sizeof(rand));
+                ediv = 0;
+
+                swap128(smp->prnd, r);
+                smp_send_cmd(conn, SMP_CMD_PAIRING_RANDOM, sizeof(r), r);
+
+                smp_s1(tfm, smp->tk, smp->prnd, smp->rrnd, key);
+                swap128(key, stk);
+
+                memset(stk + smp->smp_key_size, 0,
+                                SMP_MAX_ENC_KEY_SIZE - smp->smp_key_size);
+
+                hci_add_ltk(hcon->hdev, 0, conn->dst, smp->smp_key_size,
+                                                        ediv, rand, stk);
+        }
+
+        return;
+
+error:
+        smp_send_cmd(conn, SMP_CMD_PAIRING_FAIL, sizeof(reason), &reason);
+        smp_chan_destroy(conn);
+}
+
+static struct smp_chan *smp_chan_create(struct l2cap_conn *conn)
+{
+        struct smp_chan *smp;
+
+        smp = kzalloc(sizeof(struct smp_chan), GFP_ATOMIC);
+        if (!smp)
+                return NULL;
+
+        INIT_WORK(&smp->confirm, confirm_work);
+        INIT_WORK(&smp->random, random_work);
+
+        smp->conn = conn;
+        conn->smp_chan = smp;
+
+        hci_conn_hold(conn->hcon);
+
+        return smp;
+}
+
+void smp_chan_destroy(struct l2cap_conn *conn)
+{
+        kfree(conn->smp_chan);
+        hci_conn_put(conn->hcon);
+}
+
 static u8 smp_cmd_pairing_req(struct l2cap_conn *conn, struct sk_buff *skb)
 {
         struct smp_cmd_pairing rsp, *req = (void *) skb->data;
+        struct smp_chan *smp;
         u8 key_size;
+        int ret;
 
         BT_DBG("conn %p", conn);
 
-        conn->preq[0] = SMP_CMD_PAIRING_REQ;
-        memcpy(&conn->preq[1], req, sizeof(*req));
+        if (!test_and_set_bit(HCI_CONN_LE_SMP_PEND, &conn->hcon->pend))
+                smp = smp_chan_create(conn);
+
+        smp = conn->smp_chan;
+
+        smp->preq[0] = SMP_CMD_PAIRING_REQ;
+        memcpy(&smp->preq[1], req, sizeof(*req));
         skb_pull(skb, sizeof(*req));
 
         if (req->oob_flag)
@@ -260,32 +411,33 @@ static u8 smp_cmd_pairing_req(struct l2cap_conn *conn, struct sk_buff *skb)
                 return SMP_ENC_KEY_SIZE;
 
         /* Just works */
-        memset(conn->tk, 0, sizeof(conn->tk));
+        memset(smp->tk, 0, sizeof(smp->tk));
+
+        ret = smp_rand(smp->prnd);
+        if (ret)
+                return SMP_UNSPECIFIED;
 
-        conn->prsp[0] = SMP_CMD_PAIRING_RSP;
-        memcpy(&conn->prsp[1], &rsp, sizeof(rsp));
+        smp->prsp[0] = SMP_CMD_PAIRING_RSP;
+        memcpy(&smp->prsp[1], &rsp, sizeof(rsp));
 
         smp_send_cmd(conn, SMP_CMD_PAIRING_RSP, sizeof(rsp), &rsp);
 
-        mod_timer(&conn->security_timer, jiffies +
-                                        msecs_to_jiffies(SMP_TIMEOUT));
-
         return 0;
 }
 
 static u8 smp_cmd_pairing_rsp(struct l2cap_conn *conn, struct sk_buff *skb)
 {
         struct smp_cmd_pairing *req, *rsp = (void *) skb->data;
-        struct smp_cmd_pairing_confirm cp;
-        struct crypto_blkcipher *tfm = conn->hcon->hdev->tfm;
+        struct smp_chan *smp = conn->smp_chan;
+        struct hci_dev *hdev = conn->hcon->hdev;
+        u8 key_size;
         int ret;
-        u8 res[16], key_size;
 
         BT_DBG("conn %p", conn);
 
         skb_pull(skb, sizeof(*rsp));
 
-        req = (void *) &conn->preq[1];
+        req = (void *) &smp->preq[1];
 
         key_size = min(req->max_key_size, rsp->max_key_size);
         if (check_enc_key_size(conn, key_size))
@@ -295,222 +447,154 @@ static u8 smp_cmd_pairing_rsp(struct l2cap_conn *conn, struct sk_buff *skb)
                 return SMP_OOB_NOT_AVAIL;
 
         /* Just works */
-        memset(conn->tk, 0, sizeof(conn->tk));
-
-        conn->prsp[0] = SMP_CMD_PAIRING_RSP;
-        memcpy(&conn->prsp[1], rsp, sizeof(*rsp));
-
-        ret = smp_rand(conn->prnd);
-        if (ret)
-                return SMP_UNSPECIFIED;
+        memset(smp->tk, 0, sizeof(smp->tk));
 
-        ret = smp_c1(tfm, conn->tk, conn->prnd, conn->preq, conn->prsp, 0,
-                        conn->src, conn->hcon->dst_type, conn->dst, res);
+        ret = smp_rand(smp->prnd);
         if (ret)
                 return SMP_UNSPECIFIED;
 
-        swap128(res, cp.confirm_val);
+        smp->prsp[0] = SMP_CMD_PAIRING_RSP;
+        memcpy(&smp->prsp[1], rsp, sizeof(*rsp));
 
-        smp_send_cmd(conn, SMP_CMD_PAIRING_CONFIRM, sizeof(cp), &cp);
+        queue_work(hdev->workqueue, &smp->confirm);
 
         return 0;
 }
 
 static u8 smp_cmd_pairing_confirm(struct l2cap_conn *conn, struct sk_buff *skb)
 {
-        struct crypto_blkcipher *tfm = conn->hcon->hdev->tfm;
+        struct smp_chan *smp = conn->smp_chan;
+        struct hci_dev *hdev = conn->hcon->hdev;
 
         BT_DBG("conn %p %s", conn, conn->hcon->out ? "master" : "slave");
 
-        memcpy(conn->pcnf, skb->data, sizeof(conn->pcnf));
-        skb_pull(skb, sizeof(conn->pcnf));
+        memcpy(smp->pcnf, skb->data, sizeof(smp->pcnf));
+        skb_pull(skb, sizeof(smp->pcnf));
 
         if (conn->hcon->out) {
                 u8 random[16];
 
-                swap128(conn->prnd, random);
+                swap128(smp->prnd, random);
                 smp_send_cmd(conn, SMP_CMD_PAIRING_RANDOM, sizeof(random),
                                                                 random);
         } else {
-                struct smp_cmd_pairing_confirm cp;
-                int ret;
-                u8 res[16];
-
-                ret = smp_rand(conn->prnd);
-                if (ret)
-                        return SMP_UNSPECIFIED;
-
-                ret = smp_c1(tfm, conn->tk, conn->prnd, conn->preq, conn->prsp,
-                                                conn->hcon->dst_type, conn->dst,
-                                                0, conn->src, res);
-                if (ret)
-                        return SMP_CONFIRM_FAILED;
-
-                swap128(res, cp.confirm_val);
-
-                smp_send_cmd(conn, SMP_CMD_PAIRING_CONFIRM, sizeof(cp), &cp);
+                queue_work(hdev->workqueue, &smp->confirm);
         }
 
-        mod_timer(&conn->security_timer, jiffies +
-                                        msecs_to_jiffies(SMP_TIMEOUT));
-
         return 0;
 }
 
 static u8 smp_cmd_pairing_random(struct l2cap_conn *conn, struct sk_buff *skb)
 {
-        struct hci_conn *hcon = conn->hcon;
-        struct crypto_blkcipher *tfm = hcon->hdev->tfm;
-        int ret;
-        u8 key[16], res[16], random[16], confirm[16];
+        struct smp_chan *smp = conn->smp_chan;
+        struct hci_dev *hdev = conn->hcon->hdev;
 
-        swap128(skb->data, random);
-        skb_pull(skb, sizeof(random));
-
-        if (conn->hcon->out)
-                ret = smp_c1(tfm, conn->tk, random, conn->preq, conn->prsp, 0,
-                                conn->src, conn->hcon->dst_type, conn->dst,
-                                res);
-        else
-                ret = smp_c1(tfm, conn->tk, random, conn->preq, conn->prsp,
-                                conn->hcon->dst_type, conn->dst, 0, conn->src,
-                                res);
-        if (ret)
-                return SMP_UNSPECIFIED;
-
-        BT_DBG("conn %p %s", conn, conn->hcon->out ? "master" : "slave");
-
-        swap128(res, confirm);
-
-        if (memcmp(conn->pcnf, confirm, sizeof(conn->pcnf)) != 0) {
-                BT_ERR("Pairing failed (confirmation values mismatch)");
-                return SMP_CONFIRM_FAILED;
-        }
-
-        if (conn->hcon->out) {
-                u8 stk[16], rand[8];
-                __le16 ediv;
-
-                memset(rand, 0, sizeof(rand));
-                ediv = 0;
+        BT_DBG("conn %p", conn);
 
-                smp_s1(tfm, conn->tk, random, conn->prnd, key);
-                swap128(key, stk);
+        swap128(skb->data, smp->rrnd);
+        skb_pull(skb, sizeof(smp->rrnd));
 
-                memset(stk + conn->smp_key_size, 0,
-                                SMP_MAX_ENC_KEY_SIZE - conn->smp_key_size);
+        queue_work(hdev->workqueue, &smp->random);
 
-                hci_le_start_enc(hcon, ediv, rand, stk);
-                hcon->enc_key_size = conn->smp_key_size;
-        } else {
-                u8 stk[16], r[16], rand[8];
-                __le16 ediv;
+        return 0;
+}
 
-                memset(rand, 0, sizeof(rand));
-                ediv = 0;
+static u8 smp_ltk_encrypt(struct l2cap_conn *conn)
+{
+        struct link_key *key;
+        struct key_master_id *master;
+        struct hci_conn *hcon = conn->hcon;
 
-                swap128(conn->prnd, r);
-                smp_send_cmd(conn, SMP_CMD_PAIRING_RANDOM, sizeof(r), r);
+        key = hci_find_link_key_type(hcon->hdev, conn->dst,
+                                                HCI_LK_SMP_LTK);
+        if (!key)
+                return 0;
 
-                smp_s1(tfm, conn->tk, conn->prnd, random, key);
-                swap128(key, stk);
+        if (test_and_set_bit(HCI_CONN_ENCRYPT_PEND,
+                                        &hcon->pend))
+                return 1;
 
-                memset(stk + conn->smp_key_size, 0,
-                                SMP_MAX_ENC_KEY_SIZE - conn->smp_key_size);
+        master = (void *) key->data;
+        hci_le_start_enc(hcon, master->ediv, master->rand,
+                                                key->val);
+        hcon->enc_key_size = key->pin_len;
 
-                hci_add_ltk(conn->hcon->hdev, 0, conn->dst, conn->smp_key_size,
-                                                        ediv, rand, stk);
-        }
+        return 1;
 
-        return 0;
 }
-
 static u8 smp_cmd_security_req(struct l2cap_conn *conn, struct sk_buff *skb)
 {
         struct smp_cmd_security_req *rp = (void *) skb->data;
         struct smp_cmd_pairing cp;
         struct hci_conn *hcon = conn->hcon;
+        struct smp_chan *smp;
 
         BT_DBG("conn %p", conn);
 
-        if (test_bit(HCI_CONN_ENCRYPT_PEND, &hcon->pend))
+        hcon->pending_sec_level = BT_SECURITY_MEDIUM;
+
+        if (smp_ltk_encrypt(conn))
                 return 0;
 
+        if (test_and_set_bit(HCI_CONN_LE_SMP_PEND, &hcon->pend))
+                return 0;
+
+        smp = smp_chan_create(conn);
+
         skb_pull(skb, sizeof(*rp));
 
         memset(&cp, 0, sizeof(cp));
         build_pairing_cmd(conn, &cp, NULL, rp->auth_req);
 
-        conn->preq[0] = SMP_CMD_PAIRING_REQ;
-        memcpy(&conn->preq[1], &cp, sizeof(cp));
+        smp->preq[0] = SMP_CMD_PAIRING_REQ;
+        memcpy(&smp->preq[1], &cp, sizeof(cp));
 
         smp_send_cmd(conn, SMP_CMD_PAIRING_REQ, sizeof(cp), &cp);
 
-        mod_timer(&conn->security_timer, jiffies +
-                                        msecs_to_jiffies(SMP_TIMEOUT));
-
-        set_bit(HCI_CONN_ENCRYPT_PEND, &hcon->pend);
-
         return 0;
 }
 
 int smp_conn_security(struct l2cap_conn *conn, __u8 sec_level)
 {
         struct hci_conn *hcon = conn->hcon;
-        __u8 authreq;
+        struct smp_chan *smp = conn->smp_chan;
 
         BT_DBG("conn %p hcon %p level 0x%2.2x", conn, hcon, sec_level);
 
         if (!lmp_host_le_capable(hcon->hdev))
                 return 1;
 
-        if (IS_ERR(hcon->hdev->tfm))
-                return 1;
-
-        if (test_bit(HCI_CONN_ENCRYPT_PEND, &hcon->pend))
-                return 0;
-
         if (sec_level == BT_SECURITY_LOW)
                 return 1;
 
         if (hcon->sec_level >= sec_level)
                 return 1;
 
-        authreq = seclevel_to_authreq(sec_level);
-
-        if (hcon->link_mode & HCI_LM_MASTER) {
-                struct smp_cmd_pairing cp;
-                struct link_key *key;
+        if (hcon->link_mode & HCI_LM_MASTER)
+                if (smp_ltk_encrypt(conn))
+                        goto done;
 
-                key = hci_find_link_key_type(hcon->hdev, conn->dst,
-                                                        HCI_LK_SMP_LTK);
-                if (key) {
-                        struct key_master_id *master = (void *) key->data;
+        if (test_and_set_bit(HCI_CONN_LE_SMP_PEND, &hcon->pend))
+                return 0;
 
-                        hci_le_start_enc(hcon, master->ediv, master->rand,
-                                                                key->val);
-                        hcon->enc_key_size = key->pin_len;
+        smp = smp_chan_create(conn);
 
-                        goto done;
-                }
-
-                build_pairing_cmd(conn, &cp, NULL, authreq);
-                conn->preq[0] = SMP_CMD_PAIRING_REQ;
-                memcpy(&conn->preq[1], &cp, sizeof(cp));
+        if (hcon->link_mode & HCI_LM_MASTER) {
+                struct smp_cmd_pairing cp;
 
-                mod_timer(&conn->security_timer, jiffies +
-                                        msecs_to_jiffies(SMP_TIMEOUT));
+                build_pairing_cmd(conn, &cp, NULL, SMP_AUTH_NONE);
+                smp->preq[0] = SMP_CMD_PAIRING_REQ;
+                memcpy(&smp->preq[1], &cp, sizeof(cp));
 
                 smp_send_cmd(conn, SMP_CMD_PAIRING_REQ, sizeof(cp), &cp);
         } else {
                 struct smp_cmd_security_req cp;
-                cp.auth_req = authreq;
+                cp.auth_req = SMP_AUTH_NONE;
                 smp_send_cmd(conn, SMP_CMD_SECURITY_REQ, sizeof(cp), &cp);
         }
 
 done:
         hcon->pending_sec_level = sec_level;
-        set_bit(HCI_CONN_ENCRYPT_PEND, &hcon->pend);
 
         return 0;
 }
@@ -518,10 +602,11 @@ done:
 static int smp_cmd_encrypt_info(struct l2cap_conn *conn, struct sk_buff *skb)
 {
         struct smp_cmd_encrypt_info *rp = (void *) skb->data;
+        struct smp_chan *smp = conn->smp_chan;
 
         skb_pull(skb, sizeof(*rp));
 
-        memcpy(conn->tk, rp->ltk, sizeof(conn->tk));
+        memcpy(smp->tk, rp->ltk, sizeof(smp->tk));
 
         return 0;
 }
@@ -529,11 +614,12 @@ static int smp_cmd_encrypt_info(struct l2cap_conn *conn, struct sk_buff *skb)
 static int smp_cmd_master_ident(struct l2cap_conn *conn, struct sk_buff *skb)
 {
         struct smp_cmd_master_ident *rp = (void *) skb->data;
+        struct smp_chan *smp = conn->smp_chan;
 
         skb_pull(skb, sizeof(*rp));
 
-        hci_add_ltk(conn->hcon->hdev, 1, conn->src, conn->smp_key_size,
-                                                rp->ediv, rp->rand, conn->tk);
+        hci_add_ltk(conn->hcon->hdev, 1, conn->src, smp->smp_key_size,
+                                                rp->ediv, rp->rand, smp->tk);
 
         smp_distribute_keys(conn, 1);
 
@@ -552,12 +638,6 @@ int smp_sig_channel(struct l2cap_conn *conn, struct sk_buff *skb)
                 goto done;
         }
 
-        if (IS_ERR(conn->hcon->hdev->tfm)) {
-                err = PTR_ERR(conn->hcon->hdev->tfm);
-                reason = SMP_PAIRING_NOTSUPP;
-                goto done;
-        }
-
         skb_pull(skb, sizeof(code));
 
         switch (code) {
@@ -621,20 +701,21 @@ done:
 int smp_distribute_keys(struct l2cap_conn *conn, __u8 force)
 {
         struct smp_cmd_pairing *req, *rsp;
+        struct smp_chan *smp = conn->smp_chan;
         __u8 *keydist;
 
         BT_DBG("conn %p force %d", conn, force);
 
-        if (IS_ERR(conn->hcon->hdev->tfm))
-                return PTR_ERR(conn->hcon->hdev->tfm);
+        if (!test_bit(HCI_CONN_LE_SMP_PEND, &conn->hcon->pend))
+                return 0;
 
-        rsp = (void *) &conn->prsp[1];
+        rsp = (void *) &smp->prsp[1];
 
         /* The responder sends its keys first */
         if (!force && conn->hcon->out && (rsp->resp_key_dist & 0x07))
                 return 0;
 
-        req = (void *) &conn->preq[1];
+        req = (void *) &smp->preq[1];
 
         if (conn->hcon->out) {
                 keydist = &rsp->init_key_dist;
@@ -658,7 +739,7 @@ int smp_distribute_keys(struct l2cap_conn *conn, __u8 force)
 
                 smp_send_cmd(conn, SMP_CMD_ENCRYPT_INFO, sizeof(enc), &enc);
 
-                hci_add_ltk(conn->hcon->hdev, 1, conn->dst, conn->smp_key_size,
+                hci_add_ltk(conn->hcon->hdev, 1, conn->dst, smp->smp_key_size,
                                                 ediv, ident.rand, enc.ltk);
 
                 ident.ediv = cpu_to_le16(ediv);
@@ -698,5 +779,11 @@ int smp_distribute_keys(struct l2cap_conn *conn, __u8 force)
                 *keydist &= ~SMP_DIST_SIGN;
         }
 
+        if (conn->hcon->out || force) {
+                clear_bit(HCI_CONN_LE_SMP_PEND, &conn->hcon->pend);
+                del_timer(&conn->security_timer);
+                smp_chan_destroy(conn);
+        }
+
         return 0;
 }
diff --git a/net/bridge/br_device.c b/net/bridge/br_device.c
index ff3ed6086ce1..feb77ea7b58e 100644
--- a/net/bridge/br_device.c
+++ b/net/bridge/br_device.c
@@ -301,7 +301,7 @@ static const struct net_device_ops br_netdev_ops = {
         .ndo_start_xmit          = br_dev_xmit,
         .ndo_get_stats64         = br_get_stats64,
         .ndo_set_mac_address     = br_set_mac_address,
-        .ndo_set_multicast_list  = br_dev_set_multicast_list,
+        .ndo_set_rx_mode         = br_dev_set_multicast_list,
         .ndo_change_mtu          = br_change_mtu,
         .ndo_do_ioctl            = br_dev_ioctl,
 #ifdef CONFIG_NET_POLL_CONTROLLER
@@ -358,6 +358,8 @@ void br_dev_setup(struct net_device *dev)
         memcpy(br->group_addr, br_group_address, ETH_ALEN);
 
         br->stp_enabled = BR_NO_STP;
+        br->group_fwd_mask = BR_GROUPFWD_DEFAULT;
+
         br->designated_root = br->bridge_id;
         br->bridge_max_age = br->max_age = 20 * HZ;
         br->bridge_hello_time = br->hello_time = 2 * HZ;
diff --git a/net/bridge/br_fdb.c b/net/bridge/br_fdb.c
index 68def3b7fb49..c8e7861b88b0 100644
--- a/net/bridge/br_fdb.c
+++ b/net/bridge/br_fdb.c
@@ -558,19 +558,28 @@ skip:
 
 /* Create new static fdb entry */
 static int fdb_add_entry(struct net_bridge_port *source, const __u8 *addr,
-                         __u16 state)
+                         __u16 state, __u16 flags)
 {
         struct net_bridge *br = source->br;
         struct hlist_head *head = &br->hash[br_mac_hash(addr)];
         struct net_bridge_fdb_entry *fdb;
 
         fdb = fdb_find(head, addr);
-        if (fdb)
-                return -EEXIST;
+        if (fdb == NULL) {
+                if (!(flags & NLM_F_CREATE))
+                        return -ENOENT;
 
-        fdb = fdb_create(head, source, addr);
-        if (!fdb)
-                return -ENOMEM;
+                fdb = fdb_create(head, source, addr);
+                if (!fdb)
+                        return -ENOMEM;
+        } else {
+                if (flags & NLM_F_EXCL)
+                        return -EEXIST;
+
+                if (flags & NLM_F_REPLACE)
+                        fdb->updated = fdb->used = jiffies;
+                fdb->is_local = fdb->is_static = 0;
+        }
 
         if (state & NUD_PERMANENT)
                 fdb->is_local = fdb->is_static = 1;
@@ -626,7 +635,7 @@ int br_fdb_add(struct sk_buff *skb, struct nlmsghdr *nlh, void *arg)
         }
 
         spin_lock_bh(&p->br->hash_lock);
-        err = fdb_add_entry(p, addr, ndm->ndm_state);
+        err = fdb_add_entry(p, addr, ndm->ndm_state, nlh->nlmsg_flags);
         spin_unlock_bh(&p->br->hash_lock);
 
         return err;
diff --git a/net/bridge/br_if.c b/net/bridge/br_if.c
index 1d420f64ff27..f603e5b0b930 100644
--- a/net/bridge/br_if.c
+++ b/net/bridge/br_if.c
@@ -13,6 +13,7 @@
 
 #include <linux/kernel.h>
 #include <linux/netdevice.h>
+#include <linux/etherdevice.h>
 #include <linux/netpoll.h>
 #include <linux/ethtool.h>
 #include <linux/if_arp.h>
@@ -33,20 +34,18 @@
  */
 static int port_cost(struct net_device *dev)
 {
-        if (dev->ethtool_ops && dev->ethtool_ops->get_settings) {
-                struct ethtool_cmd ecmd = { .cmd = ETHTOOL_GSET, };
-
-                if (!dev_ethtool_get_settings(dev, &ecmd)) {
-                        switch (ethtool_cmd_speed(&ecmd)) {
-                        case SPEED_10000:
-                                return 2;
-                        case SPEED_1000:
-                                return 4;
-                        case SPEED_100:
-                                return 19;
-                        case SPEED_10:
-                                return 100;
-                        }
+        struct ethtool_cmd ecmd;
+
+        if (!__ethtool_get_settings(dev, &ecmd)) {
+                switch (ethtool_cmd_speed(&ecmd)) {
+                case SPEED_10000:
+                        return 2;
+                case SPEED_1000:
+                        return 4;
+                case SPEED_100:
+                        return 19;
+                case SPEED_10:
+                        return 100;
                 }
         }
 
@@ -325,7 +324,8 @@ int br_add_if(struct net_bridge *br, struct net_device *dev)
 
         /* Don't allow bridging non-ethernet like devices */
         if ((dev->flags & IFF_LOOPBACK) ||
-            dev->type != ARPHRD_ETHER || dev->addr_len != ETH_ALEN)
+            dev->type != ARPHRD_ETHER || dev->addr_len != ETH_ALEN ||
+            !is_valid_ether_addr(dev->dev_addr))
                 return -EINVAL;
 
         /* No bridging of bridges */
@@ -353,10 +353,6 @@ int br_add_if(struct net_bridge *br, struct net_device *dev)
         err = kobject_init_and_add(&p->kobj, &brport_ktype, &(dev->dev.kobj),
                                    SYSFS_BRIDGE_PORT_ATTR);
         if (err)
-                goto err0;
-
-        err = br_fdb_insert(br, p, dev->dev_addr);
-        if (err)
                 goto err1;
 
         err = br_sysfs_addif(p);
@@ -397,6 +393,9 @@ int br_add_if(struct net_bridge *br, struct net_device *dev)
 
         dev_set_mtu(br->dev, br_min_mtu(br));
 
+        if (br_fdb_insert(br, p, dev->dev_addr))
+                netdev_err(dev, "failed insert local address bridge forwarding table\n");
+
         kobject_uevent(&p->kobj, KOBJ_ADD);
 
         return 0;
@@ -406,11 +405,9 @@ err4:
 err3:
         sysfs_remove_link(br->ifobj, p->dev->name);
 err2:
-        br_fdb_delete_by_port(br, p, 1);
-err1:
         kobject_put(&p->kobj);
         p = NULL; /* kobject_put frees */
-err0:
+err1:
         dev_set_promiscuity(dev, -1);
 put_back:
         dev_put(dev);
diff --git a/net/bridge/br_input.c b/net/bridge/br_input.c
index f06ee39c73fd..5a31731be4d0 100644
--- a/net/bridge/br_input.c
+++ b/net/bridge/br_input.c
@@ -16,6 +16,7 @@
 #include <linux/netdevice.h>
 #include <linux/etherdevice.h>
 #include <linux/netfilter_bridge.h>
+#include <linux/export.h>
 #include "br_private.h"
 
 /* Bridge group multicast address 802.1d (pg 51). */
@@ -162,14 +163,37 @@ rx_handler_result_t br_handle_frame(struct sk_buff **pskb)
         p = br_port_get_rcu(skb->dev);
 
         if (unlikely(is_link_local(dest))) {
-                /* Pause frames shouldn't be passed up by driver anyway */
-                if (skb->protocol == htons(ETH_P_PAUSE))
+                /*
+                 * See IEEE 802.1D Table 7-10 Reserved addresses
+                 *
+                 * Assignment                           Value
+                 * Bridge Group Address         01-80-C2-00-00-00
+                 * (MAC Control) 802.3          01-80-C2-00-00-01
+                 * (Link Aggregation) 802.3     01-80-C2-00-00-02
+                 * 802.1X PAE address           01-80-C2-00-00-03
+                 *
+                 * 802.1AB LLDP                 01-80-C2-00-00-0E
+                 *
+                 * Others reserved for future standardization
+                 */
+                switch (dest[5]) {
+                case 0x00:      /* Bridge Group Address */
+                        /* If STP is turned off,
+                           then must forward to keep loop detection */
+                        if (p->br->stp_enabled == BR_NO_STP)
+                                goto forward;
+                        break;
+
+                case 0x01:      /* IEEE MAC (Pause) */
                         goto drop;
 
-                /* If STP is turned off, then forward */
-                if (p->br->stp_enabled == BR_NO_STP && dest[5] == 0)
-                        goto forward;
+                default:
+                        /* Allow selective forwarding for most other protocols */
+                        if (p->br->group_fwd_mask & (1u << dest[5]))
+                                goto forward;
+                }
 
+                /* Deliver packet to local host only */
                 if (NF_HOOK(NFPROTO_BRIDGE, NF_BR_LOCAL_IN, skb, skb->dev,
                             NULL, br_handle_local_finish)) {
                         return RX_HANDLER_CONSUMED; /* consumed by filter */
diff --git a/net/bridge/br_private.h b/net/bridge/br_private.h
index 857a021deea9..d7d6fb05411f 100644
--- a/net/bridge/br_private.h
+++ b/net/bridge/br_private.h
@@ -29,6 +29,11 @@
 
 #define BR_VERSION      "2.3"
 
+/* Control of forwarding link local multicast */
+#define BR_GROUPFWD_DEFAULT     0
+/* Don't allow forwarding control protocols like STP and LLDP */
+#define BR_GROUPFWD_RESTRICTED  0x4007u
+
 /* Path to usermode spanning tree program */
 #define BR_STP_PROG     "/sbin/bridge-stp"
 
@@ -193,6 +198,8 @@ struct net_bridge
         unsigned long                   flags;
 #define BR_SET_MAC_ADDR         0x00000001
 
+        u16                             group_fwd_mask;
+
         /* STP */
         bridge_id                       designated_root;
         bridge_id                       bridge_id;
diff --git a/net/bridge/br_stp_if.c b/net/bridge/br_stp_if.c
index 10eda3cd1d71..19308e305d85 100644
--- a/net/bridge/br_stp_if.c
+++ b/net/bridge/br_stp_if.c
@@ -12,6 +12,7 @@
  */
 
 #include <linux/kernel.h>
+#include <linux/kmod.h>
 #include <linux/etherdevice.h>
 #include <linux/rtnetlink.h>
 
diff --git a/net/bridge/br_sysfs_br.c b/net/bridge/br_sysfs_br.c
index 68b893ea8c3a..c236c0e43984 100644
--- a/net/bridge/br_sysfs_br.c
+++ b/net/bridge/br_sysfs_br.c
@@ -149,6 +149,39 @@ static ssize_t store_stp_state(struct device *d,
 static DEVICE_ATTR(stp_state, S_IRUGO | S_IWUSR, show_stp_state,
                    store_stp_state);
 
+static ssize_t show_group_fwd_mask(struct device *d,
+                              struct device_attribute *attr, char *buf)
+{
+        struct net_bridge *br = to_bridge(d);
+        return sprintf(buf, "%#x\n", br->group_fwd_mask);
+}
+
+
+static ssize_t store_group_fwd_mask(struct device *d,
+                               struct device_attribute *attr, const char *buf,
+                               size_t len)
+{
+        struct net_bridge *br = to_bridge(d);
+        char *endp;
+        unsigned long val;
+
+        if (!capable(CAP_NET_ADMIN))
+                return -EPERM;
+
+        val = simple_strtoul(buf, &endp, 0);
+        if (endp == buf)
+                return -EINVAL;
+
+        if (val & BR_GROUPFWD_RESTRICTED)
+                return -EINVAL;
+
+        br->group_fwd_mask = val;
+
+        return len;
+}
+static DEVICE_ATTR(group_fwd_mask, S_IRUGO | S_IWUSR, show_group_fwd_mask,
+                   store_group_fwd_mask);
+
 static ssize_t show_priority(struct device *d, struct device_attribute *attr,
                              char *buf)
 {
@@ -652,6 +685,7 @@ static struct attribute *bridge_attrs[] = {
         &dev_attr_max_age.attr,
         &dev_attr_ageing_time.attr,
         &dev_attr_stp_state.attr,
+        &dev_attr_group_fwd_mask.attr,
         &dev_attr_priority.attr,
         &dev_attr_bridge_id.attr,
         &dev_attr_root_id.attr,
diff --git a/net/bridge/netfilter/ebt_ulog.c b/net/bridge/netfilter/ebt_ulog.c
index bf2a333ca7c7..5449294bdd5e 100644
--- a/net/bridge/netfilter/ebt_ulog.c
+++ b/net/bridge/netfilter/ebt_ulog.c
@@ -102,16 +102,15 @@ static struct sk_buff *ulog_alloc_skb(unsigned int size)
         unsigned int n;
 
         n = max(size, nlbufsiz);
-        skb = alloc_skb(n, GFP_ATOMIC);
+        skb = alloc_skb(n, GFP_ATOMIC | __GFP_NOWARN);
         if (!skb) {
-                pr_debug("cannot alloc whole buffer of size %ub!\n", n);
                 if (n > size) {
                         /* try to allocate only as much as we need for
                          * current packet */
                         skb = alloc_skb(size, GFP_ATOMIC);
                         if (!skb)
-                                pr_debug("cannot even allocate "
-                                         "buffer of size %ub\n", size);
+                                pr_debug("cannot even allocate buffer of size %ub\n",
+                                         size);
                 }
         }
 
diff --git a/net/bridge/netfilter/ebtable_broute.c b/net/bridge/netfilter/ebtable_broute.c
index 1bcaf36ad612..40d8258bf74f 100644
--- a/net/bridge/netfilter/ebtable_broute.c
+++ b/net/bridge/netfilter/ebtable_broute.c
@@ -87,14 +87,14 @@ static int __init ebtable_broute_init(void)
         if (ret < 0)
                 return ret;
         /* see br_input.c */
-        rcu_assign_pointer(br_should_route_hook,
+        RCU_INIT_POINTER(br_should_route_hook,
                            (br_should_route_hook_t *)ebt_broute);
         return 0;
 }
 
 static void __exit ebtable_broute_fini(void)
 {
-        rcu_assign_pointer(br_should_route_hook, NULL);
+        RCU_INIT_POINTER(br_should_route_hook, NULL);
         synchronize_net();
         unregister_pernet_subsys(&broute_net_ops);
 }
diff --git a/net/caif/caif_dev.c b/net/caif/caif_dev.c
index 7f9ac0742d19..f1fa1f6e658d 100644
--- a/net/caif/caif_dev.c
+++ b/net/caif/caif_dev.c
@@ -16,6 +16,7 @@
 #include <linux/net.h>
 #include <linux/netdevice.h>
 #include <linux/mutex.h>
+#include <linux/module.h>
 #include <net/netns/generic.h>
 #include <net/net_namespace.h>
 #include <net/pkt_sched.h>
@@ -212,8 +213,7 @@ static int caif_device_notify(struct notifier_block *me, unsigned long what,
         enum cfcnfg_phy_preference pref;
         enum cfcnfg_phy_type phy_type;
         struct cfcnfg *cfg;
-        struct caif_device_entry_list *caifdevs =
-            caif_device_list(dev_net(dev));
+        struct caif_device_entry_list *caifdevs;
 
         if (dev->type != ARPHRD_CAIF)
                 return 0;
@@ -222,6 +222,8 @@ static int caif_device_notify(struct notifier_block *me, unsigned long what,
         if (cfg == NULL)
                 return 0;
 
+        caifdevs = caif_device_list(dev_net(dev));
+
         switch (what) {
         case NETDEV_REGISTER:
                 caifd = caif_device_alloc(dev);
diff --git a/net/caif/cfcnfg.c b/net/caif/cfcnfg.c
index 52fe33bee029..00523ecc4ced 100644
--- a/net/caif/cfcnfg.c
+++ b/net/caif/cfcnfg.c
@@ -78,10 +78,8 @@ struct cfcnfg *cfcnfg_create(void)
 
         /* Initiate this layer */
         this = kzalloc(sizeof(struct cfcnfg), GFP_ATOMIC);
-        if (!this) {
-                pr_warn("Out of memory\n");
+        if (!this)
                 return NULL;
-        }
         this->mux = cfmuxl_create();
         if (!this->mux)
                 goto out_of_mem;
@@ -108,8 +106,6 @@ struct cfcnfg *cfcnfg_create(void)
 
         return this;
 out_of_mem:
-        pr_warn("Out of memory\n");
-
         synchronize_rcu();
 
         kfree(this->mux);
@@ -448,10 +444,8 @@ cfcnfg_linkup_rsp(struct cflayer *layer, u8 channel_id, enum cfctrl_srv serv,
                                 "- unknown channel type\n");
                 goto unlock;
         }
-        if (!servicel) {
-                pr_warn("Out of memory\n");
+        if (!servicel)
                 goto unlock;
-        }
         layer_set_dn(servicel, cnfg->mux);
         cfmuxl_set_uplayer(cnfg->mux, servicel, channel_id);
         layer_set_up(servicel, adapt_layer);
@@ -473,7 +467,7 @@ cfcnfg_add_phy_layer(struct cfcnfg *cnfg, enum cfcnfg_phy_type phy_type,
 {
         struct cflayer *frml;
         struct cflayer *phy_driver = NULL;
-        struct cfcnfg_phyinfo *phyinfo;
+        struct cfcnfg_phyinfo *phyinfo = NULL;
         int i;
         u8 phyid;
 
@@ -488,25 +482,25 @@ cfcnfg_add_phy_layer(struct cfcnfg *cnfg, enum cfcnfg_phy_type phy_type,
                         goto got_phyid;
         }
         pr_warn("Too many CAIF Link Layers (max 6)\n");
-        goto out;
+        goto out_err;
 
 got_phyid:
         phyinfo = kzalloc(sizeof(struct cfcnfg_phyinfo), GFP_ATOMIC);
+        if (!phyinfo)
+                goto out_err;
 
         switch (phy_type) {
         case CFPHYTYPE_FRAG:
                 phy_driver =
                     cfserl_create(CFPHYTYPE_FRAG, phyid, stx);
-                if (!phy_driver) {
-                        pr_warn("Out of memory\n");
-                        goto out;
-                }
+                if (!phy_driver)
+                        goto out_err;
                 break;
         case CFPHYTYPE_CAIF:
                 phy_driver = NULL;
                 break;
         default:
-                goto out;
+                goto out_err;
         }
         phy_layer->id = phyid;
         phyinfo->pref = pref;
@@ -520,11 +514,8 @@ got_phyid:
 
         frml = cffrml_create(phyid, fcs);
 
-        if (!frml) {
-                pr_warn("Out of memory\n");
-                kfree(phyinfo);
-                goto out;
-        }
+        if (!frml)
+                goto out_err;
         phyinfo->frm_layer = frml;
         layer_set_up(frml, cnfg->mux);
 
@@ -540,7 +531,12 @@ got_phyid:
         }
 
         list_add_rcu(&phyinfo->node, &cnfg->phys);
-out:
+        mutex_unlock(&cnfg->lock);
+        return;
+
+out_err:
+        kfree(phy_driver);
+        kfree(phyinfo);
         mutex_unlock(&cnfg->lock);
 }
 EXPORT_SYMBOL(cfcnfg_add_phy_layer);
diff --git a/net/caif/cfctrl.c b/net/caif/cfctrl.c
index e22671bed669..5cf52225692e 100644
--- a/net/caif/cfctrl.c
+++ b/net/caif/cfctrl.c
@@ -35,15 +35,12 @@ struct cflayer *cfctrl_create(void)
 {
         struct dev_info dev_info;
         struct cfctrl *this =
-                kmalloc(sizeof(struct cfctrl), GFP_ATOMIC);
-        if (!this) {
-                pr_warn("Out of memory\n");
+                kzalloc(sizeof(struct cfctrl), GFP_ATOMIC);
+        if (!this)
                 return NULL;
-        }
         caif_assert(offsetof(struct cfctrl, serv.layer) == 0);
         memset(&dev_info, 0, sizeof(dev_info));
         dev_info.id = 0xff;
-        memset(this, 0, sizeof(*this));
         cfsrvl_init(&this->serv, 0, &dev_info, false);
         atomic_set(&this->req_seq_no, 1);
         atomic_set(&this->rsp_seq_no, 1);
@@ -180,10 +177,8 @@ void cfctrl_enum_req(struct cflayer *layer, u8 physlinkid)
         struct cfctrl *cfctrl = container_obj(layer);
         struct cfpkt *pkt = cfpkt_create(CFPKT_CTRL_PKT_LEN);
         struct cflayer *dn = cfctrl->serv.layer.dn;
-        if (!pkt) {
-                pr_warn("Out of memory\n");
+        if (!pkt)
                 return;
-        }
         if (!dn) {
                 pr_debug("not able to send enum request\n");
                 return;
@@ -224,10 +219,8 @@ int cfctrl_linkup_request(struct cflayer *layer,
         }
 
         pkt = cfpkt_create(CFPKT_CTRL_PKT_LEN);
-        if (!pkt) {
-                pr_warn("Out of memory\n");
+        if (!pkt)
                 return -ENOMEM;
-        }
         cfpkt_addbdy(pkt, CFCTRL_CMD_LINK_SETUP);
         cfpkt_addbdy(pkt, (param->chtype << 4) | param->linktype);
         cfpkt_addbdy(pkt, (param->priority << 3) | param->phyid);
@@ -275,10 +268,8 @@ int cfctrl_linkup_request(struct cflayer *layer,
                 return -EINVAL;
         }
         req = kzalloc(sizeof(*req), GFP_KERNEL);
-        if (!req) {
-                pr_warn("Out of memory\n");
+        if (!req)
                 return -ENOMEM;
-        }
         req->client_layer = user_layer;
         req->cmd = CFCTRL_CMD_LINK_SETUP;
         req->param = *param;
@@ -312,10 +303,8 @@ int cfctrl_linkdown_req(struct cflayer *layer, u8 channelid,
         struct cfpkt *pkt = cfpkt_create(CFPKT_CTRL_PKT_LEN);
         struct cflayer *dn = cfctrl->serv.layer.dn;
 
-        if (!pkt) {
-                pr_warn("Out of memory\n");
+        if (!pkt)
                 return -ENOMEM;
-        }
 
         if (!dn) {
                 pr_debug("not able to send link-down request\n");
diff --git a/net/caif/cfdbgl.c b/net/caif/cfdbgl.c
index 11a2af4c162a..65d6ef3cf9aa 100644
--- a/net/caif/cfdbgl.c
+++ b/net/caif/cfdbgl.c
@@ -19,13 +19,10 @@ static int cfdbgl_transmit(struct cflayer *layr, struct cfpkt *pkt);
 
 struct cflayer *cfdbgl_create(u8 channel_id, struct dev_info *dev_info)
 {
-        struct cfsrvl *dbg = kmalloc(sizeof(struct cfsrvl), GFP_ATOMIC);
-        if (!dbg) {
-                pr_warn("Out of memory\n");
+        struct cfsrvl *dbg = kzalloc(sizeof(struct cfsrvl), GFP_ATOMIC);
+        if (!dbg)
                 return NULL;
-        }
         caif_assert(offsetof(struct cfsrvl, layer) == 0);
-        memset(dbg, 0, sizeof(struct cfsrvl));
         cfsrvl_init(dbg, channel_id, dev_info, false);
         dbg->layer.receive = cfdbgl_receive;
         dbg->layer.transmit = cfdbgl_transmit;
diff --git a/net/caif/cfdgml.c b/net/caif/cfdgml.c
index 0382dec84fdc..0f5ff27aa41c 100644
--- a/net/caif/cfdgml.c
+++ b/net/caif/cfdgml.c
@@ -26,13 +26,10 @@ static int cfdgml_transmit(struct cflayer *layr, struct cfpkt *pkt);
 
 struct cflayer *cfdgml_create(u8 channel_id, struct dev_info *dev_info)
 {
-        struct cfsrvl *dgm = kmalloc(sizeof(struct cfsrvl), GFP_ATOMIC);
-        if (!dgm) {
-                pr_warn("Out of memory\n");
+        struct cfsrvl *dgm = kzalloc(sizeof(struct cfsrvl), GFP_ATOMIC);
+        if (!dgm)
                 return NULL;
-        }
         caif_assert(offsetof(struct cfsrvl, layer) == 0);
-        memset(dgm, 0, sizeof(struct cfsrvl));
         cfsrvl_init(dgm, channel_id, dev_info, true);
         dgm->layer.receive = cfdgml_receive;
         dgm->layer.transmit = cfdgml_transmit;
diff --git a/net/caif/cffrml.c b/net/caif/cffrml.c
index 04204b202718..f39921171d0d 100644
--- a/net/caif/cffrml.c
+++ b/net/caif/cffrml.c
@@ -34,11 +34,9 @@ static u32 cffrml_rcv_error;
 static u32 cffrml_rcv_checsum_error;
 struct cflayer *cffrml_create(u16 phyid, bool use_fcs)
 {
-        struct cffrml *this = kmalloc(sizeof(struct cffrml), GFP_ATOMIC);
-        if (!this) {
-                pr_warn("Out of memory\n");
+        struct cffrml *this = kzalloc(sizeof(struct cffrml), GFP_ATOMIC);
+        if (!this)
                 return NULL;
-        }
         this->pcpu_refcnt = alloc_percpu(int);
         if (this->pcpu_refcnt == NULL) {
                 kfree(this);
@@ -47,7 +45,6 @@ struct cflayer *cffrml_create(u16 phyid, bool use_fcs)
 
         caif_assert(offsetof(struct cffrml, layer) == 0);
 
-        memset(this, 0, sizeof(struct cflayer));
         this->layer.receive = cffrml_receive;
         this->layer.transmit = cffrml_transmit;
         this->layer.ctrlcmd = cffrml_ctrlcmd;
diff --git a/net/caif/cfmuxl.c b/net/caif/cfmuxl.c
index c23979e79dfa..b36f24a4c8e7 100644
--- a/net/caif/cfmuxl.c
+++ b/net/caif/cfmuxl.c
@@ -108,7 +108,7 @@ struct cflayer *cfmuxl_remove_dnlayer(struct cflayer *layr, u8 phyid)
         int idx = phyid % DN_CACHE_SIZE;
 
         spin_lock_bh(&muxl->transmit_lock);
-        rcu_assign_pointer(muxl->dn_cache[idx], NULL);
+        RCU_INIT_POINTER(muxl->dn_cache[idx], NULL);
         dn = get_from_id(&muxl->frml_list, phyid);
         if (dn == NULL)
                 goto out;
@@ -164,7 +164,7 @@ struct cflayer *cfmuxl_remove_uplayer(struct cflayer *layr, u8 id)
         if (up == NULL)
                 goto out;
 
-        rcu_assign_pointer(muxl->up_cache[idx], NULL);
+        RCU_INIT_POINTER(muxl->up_cache[idx], NULL);
         list_del_rcu(&up->node);
 out:
         spin_unlock_bh(&muxl->receive_lock);
@@ -261,7 +261,7 @@ static void cfmuxl_ctrlcmd(struct cflayer *layr, enum caif_ctrlcmd ctrl,
 
                                 idx = layer->id % UP_CACHE_SIZE;
                                 spin_lock_bh(&muxl->receive_lock);
-                                rcu_assign_pointer(muxl->up_cache[idx], NULL);
+                                RCU_INIT_POINTER(muxl->up_cache[idx], NULL);
                                 list_del_rcu(&layer->node);
                                 spin_unlock_bh(&muxl->receive_lock);
                         }
diff --git a/net/caif/cfpkt_skbuff.c b/net/caif/cfpkt_skbuff.c
index 75d4bfae1a78..df08c47183d4 100644
--- a/net/caif/cfpkt_skbuff.c
+++ b/net/caif/cfpkt_skbuff.c
@@ -9,6 +9,7 @@
 #include <linux/string.h>
 #include <linux/skbuff.h>
 #include <linux/hardirq.h>
+#include <linux/export.h>
 #include <net/caif/cfpkt.h>
 
 #define PKT_PREFIX  48
diff --git a/net/caif/cfrfml.c b/net/caif/cfrfml.c
index 0deabb440051..81660f809713 100644
--- a/net/caif/cfrfml.c
+++ b/net/caif/cfrfml.c
@@ -46,13 +46,10 @@ struct cflayer *cfrfml_create(u8 channel_id, struct dev_info *dev_info,
                                         int mtu_size)
 {
         int tmp;
-        struct cfrfml *this =
-                kzalloc(sizeof(struct cfrfml), GFP_ATOMIC);
+        struct cfrfml *this = kzalloc(sizeof(struct cfrfml), GFP_ATOMIC);
 
-        if (!this) {
-                pr_warn("Out of memory\n");
+        if (!this)
                 return NULL;
-        }
 
         cfsrvl_init(&this->serv, channel_id, dev_info, false);
         this->serv.release = cfrfml_release;
diff --git a/net/caif/cfserl.c b/net/caif/cfserl.c
index 2715c84cfa87..797c8d165993 100644
--- a/net/caif/cfserl.c
+++ b/net/caif/cfserl.c
@@ -33,13 +33,10 @@ static void cfserl_ctrlcmd(struct cflayer *layr, enum caif_ctrlcmd ctrl,
 
 struct cflayer *cfserl_create(int type, int instance, bool use_stx)
 {
-        struct cfserl *this = kmalloc(sizeof(struct cfserl), GFP_ATOMIC);
-        if (!this) {
-                pr_warn("Out of memory\n");
+        struct cfserl *this = kzalloc(sizeof(struct cfserl), GFP_ATOMIC);
+        if (!this)
                 return NULL;
-        }
         caif_assert(offsetof(struct cfserl, layer) == 0);
-        memset(this, 0, sizeof(struct cfserl));
         this->layer.receive = cfserl_receive;
         this->layer.transmit = cfserl_transmit;
         this->layer.ctrlcmd = cfserl_ctrlcmd;
diff --git a/net/caif/cfsrvl.c b/net/caif/cfsrvl.c
index 535a1e72b366..b99f5b22689d 100644
--- a/net/caif/cfsrvl.c
+++ b/net/caif/cfsrvl.c
@@ -108,10 +108,8 @@ static int cfservl_modemcmd(struct cflayer *layr, enum caif_modemcmd ctrl)
                         struct caif_payload_info *info;
                         u8 flow_on = SRVL_FLOW_ON;
                         pkt = cfpkt_create(SRVL_CTRL_PKT_SIZE);
-                        if (!pkt) {
-                                pr_warn("Out of memory\n");
+                        if (!pkt)
                                 return -ENOMEM;
-                        }
 
                         if (cfpkt_add_head(pkt, &flow_on, 1) < 0) {
                                 pr_err("Packet is erroneous!\n");
@@ -130,10 +128,8 @@ static int cfservl_modemcmd(struct cflayer *layr, enum caif_modemcmd ctrl)
                         struct caif_payload_info *info;
                         u8 flow_off = SRVL_FLOW_OFF;
                         pkt = cfpkt_create(SRVL_CTRL_PKT_SIZE);
-                        if (!pkt) {
-                                pr_warn("Out of memory\n");
+                        if (!pkt)
                                 return -ENOMEM;
-                        }
 
                         if (cfpkt_add_head(pkt, &flow_off, 1) < 0) {
                                 pr_err("Packet is erroneous!\n");
diff --git a/net/caif/cfutill.c b/net/caif/cfutill.c
index 98e027db18ed..53e49f3e3af3 100644
--- a/net/caif/cfutill.c
+++ b/net/caif/cfutill.c
@@ -26,13 +26,10 @@ static int cfutill_transmit(struct cflayer *layr, struct cfpkt *pkt);
 
 struct cflayer *cfutill_create(u8 channel_id, struct dev_info *dev_info)
 {
-        struct cfsrvl *util = kmalloc(sizeof(struct cfsrvl), GFP_ATOMIC);
-        if (!util) {
-                pr_warn("Out of memory\n");
+        struct cfsrvl *util = kzalloc(sizeof(struct cfsrvl), GFP_ATOMIC);
+        if (!util)
                 return NULL;
-        }
         caif_assert(offsetof(struct cfsrvl, layer) == 0);
-        memset(util, 0, sizeof(struct cfsrvl));
         cfsrvl_init(util, channel_id, dev_info, true);
         util->layer.receive = cfutill_receive;
         util->layer.transmit = cfutill_transmit;
diff --git a/net/caif/cfveil.c b/net/caif/cfveil.c
index 3ec83fbc2887..910ab0661f66 100644
--- a/net/caif/cfveil.c
+++ b/net/caif/cfveil.c
@@ -25,13 +25,10 @@ static int cfvei_transmit(struct cflayer *layr, struct cfpkt *pkt);
 
 struct cflayer *cfvei_create(u8 channel_id, struct dev_info *dev_info)
 {
-        struct cfsrvl *vei = kmalloc(sizeof(struct cfsrvl), GFP_ATOMIC);
-        if (!vei) {
-                pr_warn("Out of memory\n");
+        struct cfsrvl *vei = kzalloc(sizeof(struct cfsrvl), GFP_ATOMIC);
+        if (!vei)
                 return NULL;
-        }
         caif_assert(offsetof(struct cfsrvl, layer) == 0);
-        memset(vei, 0, sizeof(struct cfsrvl));
         cfsrvl_init(vei, channel_id, dev_info, true);
         vei->layer.receive = cfvei_receive;
         vei->layer.transmit = cfvei_transmit;
diff --git a/net/caif/cfvidl.c b/net/caif/cfvidl.c
index b2f5989ad455..e3f37db40ac3 100644
--- a/net/caif/cfvidl.c
+++ b/net/caif/cfvidl.c
@@ -21,14 +21,11 @@ static int cfvidl_transmit(struct cflayer *layr, struct cfpkt *pkt);
 
 struct cflayer *cfvidl_create(u8 channel_id, struct dev_info *dev_info)
 {
-        struct cfsrvl *vid = kmalloc(sizeof(struct cfsrvl), GFP_ATOMIC);
-        if (!vid) {
-                pr_warn("Out of memory\n");
+        struct cfsrvl *vid = kzalloc(sizeof(struct cfsrvl), GFP_ATOMIC);
+        if (!vid)
                 return NULL;
-        }
         caif_assert(offsetof(struct cfsrvl, layer) == 0);
 
-        memset(vid, 0, sizeof(struct cfsrvl));
         cfsrvl_init(vid, channel_id, dev_info, false);
         vid->layer.receive = cfvidl_receive;
         vid->layer.transmit = cfvidl_transmit;
diff --git a/net/can/Kconfig b/net/can/Kconfig
index 89395b2c8bca..03200699d274 100644
--- a/net/can/Kconfig
+++ b/net/can/Kconfig
@@ -40,5 +40,16 @@ config CAN_BCM
           CAN messages are used on the bus (e.g. in automotive environments).
           To use the Broadcast Manager, use AF_CAN with protocol CAN_BCM.
 
+config CAN_GW
+        tristate "CAN Gateway/Router (with netlink configuration)"
+        depends on CAN
+        default N
+        ---help---
+          The CAN Gateway/Router is used to route (and modify) CAN frames.
+          It is based on the PF_CAN core infrastructure for msg filtering and
+          msg sending and can optionally modify routed CAN frames on the fly.
+          CAN frames can be routed between CAN network interfaces (one hop).
+          They can be modified with AND/OR/XOR/SET operations as configured
+          by the netlink configuration interface known e.g. from iptables.
 
 source "drivers/net/can/Kconfig"
diff --git a/net/can/Makefile b/net/can/Makefile
index 2d3894b32742..cef49eb1f5c7 100644
--- a/net/can/Makefile
+++ b/net/can/Makefile
@@ -10,3 +10,6 @@ can-raw-y		:= raw.o
 
 obj-$(CONFIG_CAN_BCM)   += can-bcm.o
 can-bcm-y               := bcm.o
+
+obj-$(CONFIG_CAN_GW)    += can-gw.o
+can-gw-y                := gw.o
diff --git a/net/can/af_can.c b/net/can/af_can.c
index 9b0c32a2690c..0ce2ad0696da 100644
--- a/net/can/af_can.c
+++ b/net/can/af_can.c
@@ -38,8 +38,6 @@
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
  * DAMAGE.
  *
- * Send feedback to <socketcan-users@lists.berlios.de>
- *
  */
 
 #include <linux/module.h>
@@ -719,7 +717,7 @@ int can_proto_register(const struct can_proto *cp)
                        proto);
                 err = -EBUSY;
         } else
-                rcu_assign_pointer(proto_tab[proto], cp);
+                RCU_INIT_POINTER(proto_tab[proto], cp);
 
         mutex_unlock(&proto_tab_lock);
 
@@ -740,7 +738,7 @@ void can_proto_unregister(const struct can_proto *cp)
 
         mutex_lock(&proto_tab_lock);
         BUG_ON(proto_tab[proto] != cp);
-        rcu_assign_pointer(proto_tab[proto], NULL);
+        RCU_INIT_POINTER(proto_tab[proto], NULL);
         mutex_unlock(&proto_tab_lock);
 
         synchronize_rcu();
diff --git a/net/can/af_can.h b/net/can/af_can.h
index 34253b84e30f..fd882dbadad3 100644
--- a/net/can/af_can.h
+++ b/net/can/af_can.h
@@ -35,8 +35,6 @@
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
  * DAMAGE.
  *
- * Send feedback to <socketcan-users@lists.berlios.de>
- *
  */
 
 #ifndef AF_CAN_H
diff --git a/net/can/bcm.c b/net/can/bcm.c
index c84963d2dee6..151b7730c12c 100644
--- a/net/can/bcm.c
+++ b/net/can/bcm.c
@@ -37,8 +37,6 @@
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
  * DAMAGE.
  *
- * Send feedback to <socketcan-users@lists.berlios.de>
- *
  */
 
 #include <linux/module.h>
diff --git a/net/can/gw.c b/net/can/gw.c
new file mode 100644
index 000000000000..3d79b127881e
--- /dev/null
+++ b/net/can/gw.c
@@ -0,0 +1,957 @@
+/*
+ * gw.c - CAN frame Gateway/Router/Bridge with netlink interface
+ *
+ * Copyright (c) 2011 Volkswagen Group Electronic Research
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of Volkswagen nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * Alternatively, provided that this notice is retained in full, this
+ * software may be distributed under the terms of the GNU General
+ * Public License ("GPL") version 2, in which case the provisions of the
+ * GPL apply INSTEAD OF those given above.
+ *
+ * The provided data structures and external interfaces from this code
+ * are not restricted to be used by modules with a GPL compatible license.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
+ * DAMAGE.
+ *
+ */
+
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/types.h>
+#include <linux/list.h>
+#include <linux/spinlock.h>
+#include <linux/rcupdate.h>
+#include <linux/rculist.h>
+#include <linux/net.h>
+#include <linux/netdevice.h>
+#include <linux/if_arp.h>
+#include <linux/skbuff.h>
+#include <linux/can.h>
+#include <linux/can/core.h>
+#include <linux/can/gw.h>
+#include <net/rtnetlink.h>
+#include <net/net_namespace.h>
+#include <net/sock.h>
+
+#define CAN_GW_VERSION "20101209"
+static __initdata const char banner[] =
+        KERN_INFO "can: netlink gateway (rev " CAN_GW_VERSION ")\n";
+
+MODULE_DESCRIPTION("PF_CAN netlink gateway");
+MODULE_LICENSE("Dual BSD/GPL");
+MODULE_AUTHOR("Oliver Hartkopp <oliver.hartkopp@volkswagen.de>");
+MODULE_ALIAS("can-gw");
+
+HLIST_HEAD(cgw_list);
+static struct notifier_block notifier;
+
+static struct kmem_cache *cgw_cache __read_mostly;
+
+/* structure that contains the (on-the-fly) CAN frame modifications */
+struct cf_mod {
+        struct {
+                struct can_frame and;
+                struct can_frame or;
+                struct can_frame xor;
+                struct can_frame set;
+        } modframe;
+        struct {
+                u8 and;
+                u8 or;
+                u8 xor;
+                u8 set;
+        } modtype;
+        void (*modfunc[MAX_MODFUNCTIONS])(struct can_frame *cf,
+                                          struct cf_mod *mod);
+
+        /* CAN frame checksum calculation after CAN frame modifications */
+        struct {
+                struct cgw_csum_xor xor;
+                struct cgw_csum_crc8 crc8;
+        } csum;
+        struct {
+                void (*xor)(struct can_frame *cf, struct cgw_csum_xor *xor);
+                void (*crc8)(struct can_frame *cf, struct cgw_csum_crc8 *crc8);
+        } csumfunc;
+};
+
+
+/*
+ * So far we just support CAN -> CAN routing and frame modifications.
+ *
+ * The internal can_can_gw structure contains data and attributes for
+ * a CAN -> CAN gateway job.
+ */
+struct can_can_gw {
+        struct can_filter filter;
+        int src_idx;
+        int dst_idx;
+};
+
+/* list entry for CAN gateways jobs */
+struct cgw_job {
+        struct hlist_node list;
+        struct rcu_head rcu;
+        u32 handled_frames;
+        u32 dropped_frames;
+        struct cf_mod mod;
+        union {
+                /* CAN frame data source */
+                struct net_device *dev;
+        } src;
+        union {
+                /* CAN frame data destination */
+                struct net_device *dev;
+        } dst;
+        union {
+                struct can_can_gw ccgw;
+                /* tbc */
+        };
+        u8 gwtype;
+        u16 flags;
+};
+
+/* modification functions that are invoked in the hot path in can_can_gw_rcv */
+
+#define MODFUNC(func, op) static void func(struct can_frame *cf, \
+                                           struct cf_mod *mod) { op ; }
+
+MODFUNC(mod_and_id, cf->can_id &= mod->modframe.and.can_id)
+MODFUNC(mod_and_dlc, cf->can_dlc &= mod->modframe.and.can_dlc)
+MODFUNC(mod_and_data, *(u64 *)cf->data &= *(u64 *)mod->modframe.and.data)
+MODFUNC(mod_or_id, cf->can_id |= mod->modframe.or.can_id)
+MODFUNC(mod_or_dlc, cf->can_dlc |= mod->modframe.or.can_dlc)
+MODFUNC(mod_or_data, *(u64 *)cf->data |= *(u64 *)mod->modframe.or.data)
+MODFUNC(mod_xor_id, cf->can_id ^= mod->modframe.xor.can_id)
+MODFUNC(mod_xor_dlc, cf->can_dlc ^= mod->modframe.xor.can_dlc)
+MODFUNC(mod_xor_data, *(u64 *)cf->data ^= *(u64 *)mod->modframe.xor.data)
+MODFUNC(mod_set_id, cf->can_id = mod->modframe.set.can_id)
+MODFUNC(mod_set_dlc, cf->can_dlc = mod->modframe.set.can_dlc)
+MODFUNC(mod_set_data, *(u64 *)cf->data = *(u64 *)mod->modframe.set.data)
+
+static inline void canframecpy(struct can_frame *dst, struct can_frame *src)
+{
+        /*
+         * Copy the struct members separately to ensure that no uninitialized
+         * data are copied in the 3 bytes hole of the struct. This is needed
+         * to make easy compares of the data in the struct cf_mod.
+         */
+
+        dst->can_id = src->can_id;
+        dst->can_dlc = src->can_dlc;
+        *(u64 *)dst->data = *(u64 *)src->data;
+}
+
+static int cgw_chk_csum_parms(s8 fr, s8 to, s8 re)
+{
+        /*
+         * absolute dlc values 0 .. 7 => 0 .. 7, e.g. data [0]
+         * relative to received dlc -1 .. -8 :
+         * e.g. for received dlc = 8
+         * -1 => index = 7 (data[7])
+         * -3 => index = 5 (data[5])
+         * -8 => index = 0 (data[0])
+         */
+
+        if (fr > -9 && fr < 8 &&
+            to > -9 && to < 8 &&
+            re > -9 && re < 8)
+                return 0;
+        else
+                return -EINVAL;
+}
+
+static inline int calc_idx(int idx, int rx_dlc)
+{
+        if (idx < 0)
+                return rx_dlc + idx;
+        else
+                return idx;
+}
+
+static void cgw_csum_xor_rel(struct can_frame *cf, struct cgw_csum_xor *xor)
+{
+        int from = calc_idx(xor->from_idx, cf->can_dlc);
+        int to = calc_idx(xor->to_idx, cf->can_dlc);
+        int res = calc_idx(xor->result_idx, cf->can_dlc);
+        u8 val = xor->init_xor_val;
+        int i;
+
+        if (from < 0 || to < 0 || res < 0)
+                return;
+
+        if (from <= to) {
+                for (i = from; i <= to; i++)
+                        val ^= cf->data[i];
+        } else {
+                for (i = from; i >= to; i--)
+                        val ^= cf->data[i];
+        }
+
+        cf->data[res] = val;
+}
+
+static void cgw_csum_xor_pos(struct can_frame *cf, struct cgw_csum_xor *xor)
+{
+        u8 val = xor->init_xor_val;
+        int i;
+
+        for (i = xor->from_idx; i <= xor->to_idx; i++)
+                val ^= cf->data[i];
+
+        cf->data[xor->result_idx] = val;
+}
+
+static void cgw_csum_xor_neg(struct can_frame *cf, struct cgw_csum_xor *xor)
+{
+        u8 val = xor->init_xor_val;
+        int i;
+
+        for (i = xor->from_idx; i >= xor->to_idx; i--)
+                val ^= cf->data[i];
+
+        cf->data[xor->result_idx] = val;
+}
+
+static void cgw_csum_crc8_rel(struct can_frame *cf, struct cgw_csum_crc8 *crc8)
+{
+        int from = calc_idx(crc8->from_idx, cf->can_dlc);
+        int to = calc_idx(crc8->to_idx, cf->can_dlc);
+        int res = calc_idx(crc8->result_idx, cf->can_dlc);
+        u8 crc = crc8->init_crc_val;
+        int i;
+
+        if (from < 0 || to < 0 || res < 0)
+                return;
+
+        if (from <= to) {
+                for (i = crc8->from_idx; i <= crc8->to_idx; i++)
+                        crc = crc8->crctab[crc^cf->data[i]];
+        } else {
+                for (i = crc8->from_idx; i >= crc8->to_idx; i--)
+                        crc = crc8->crctab[crc^cf->data[i]];
+        }
+
+        switch (crc8->profile) {
+
+        case CGW_CRC8PRF_1U8:
+                crc = crc8->crctab[crc^crc8->profile_data[0]];
+                break;
+
+        case  CGW_CRC8PRF_16U8:
+                crc = crc8->crctab[crc^crc8->profile_data[cf->data[1] & 0xF]];
+                break;
+
+        case CGW_CRC8PRF_SFFID_XOR:
+                crc = crc8->crctab[crc^(cf->can_id & 0xFF)^
+                                   (cf->can_id >> 8 & 0xFF)];
+                break;
+
+        }
+
+        cf->data[crc8->result_idx] = crc^crc8->final_xor_val;
+}
+
+static void cgw_csum_crc8_pos(struct can_frame *cf, struct cgw_csum_crc8 *crc8)
+{
+        u8 crc = crc8->init_crc_val;
+        int i;
+
+        for (i = crc8->from_idx; i <= crc8->to_idx; i++)
+                crc = crc8->crctab[crc^cf->data[i]];
+
+        switch (crc8->profile) {
+
+        case CGW_CRC8PRF_1U8:
+                crc = crc8->crctab[crc^crc8->profile_data[0]];
+                break;
+
+        case  CGW_CRC8PRF_16U8:
+                crc = crc8->crctab[crc^crc8->profile_data[cf->data[1] & 0xF]];
+                break;
+
+        case CGW_CRC8PRF_SFFID_XOR:
+                crc = crc8->crctab[crc^(cf->can_id & 0xFF)^
+                                   (cf->can_id >> 8 & 0xFF)];
+                break;
+        }
+
+        cf->data[crc8->result_idx] = crc^crc8->final_xor_val;
+}
+
+static void cgw_csum_crc8_neg(struct can_frame *cf, struct cgw_csum_crc8 *crc8)
+{
+        u8 crc = crc8->init_crc_val;
+        int i;
+
+        for (i = crc8->from_idx; i >= crc8->to_idx; i--)
+                crc = crc8->crctab[crc^cf->data[i]];
+
+        switch (crc8->profile) {
+
+        case CGW_CRC8PRF_1U8:
+                crc = crc8->crctab[crc^crc8->profile_data[0]];
+                break;
+
+        case  CGW_CRC8PRF_16U8:
+                crc = crc8->crctab[crc^crc8->profile_data[cf->data[1] & 0xF]];
+                break;
+
+        case CGW_CRC8PRF_SFFID_XOR:
+                crc = crc8->crctab[crc^(cf->can_id & 0xFF)^
+                                   (cf->can_id >> 8 & 0xFF)];
+                break;
+        }
+
+        cf->data[crc8->result_idx] = crc^crc8->final_xor_val;
+}
+
+/* the receive & process & send function */
+static void can_can_gw_rcv(struct sk_buff *skb, void *data)
+{
+        struct cgw_job *gwj = (struct cgw_job *)data;
+        struct can_frame *cf;
+        struct sk_buff *nskb;
+        int modidx = 0;
+
+        /* do not handle already routed frames - see comment below */
+        if (skb_mac_header_was_set(skb))
+                return;
+
+        if (!(gwj->dst.dev->flags & IFF_UP)) {
+                gwj->dropped_frames++;
+                return;
+        }
+
+        /*
+         * clone the given skb, which has not been done in can_rcv()
+         *
+         * When there is at least one modification function activated,
+         * we need to copy the skb as we want to modify skb->data.
+         */
+        if (gwj->mod.modfunc[0])
+                nskb = skb_copy(skb, GFP_ATOMIC);
+        else
+                nskb = skb_clone(skb, GFP_ATOMIC);
+
+        if (!nskb) {
+                gwj->dropped_frames++;
+                return;
+        }
+
+        /*
+         * Mark routed frames by setting some mac header length which is
+         * not relevant for the CAN frames located in the skb->data section.
+         *
+         * As dev->header_ops is not set in CAN netdevices no one is ever
+         * accessing the various header offsets in the CAN skbuffs anyway.
+         * E.g. using the packet socket to read CAN frames is still working.
+         */
+        skb_set_mac_header(nskb, 8);
+        nskb->dev = gwj->dst.dev;
+
+        /* pointer to modifiable CAN frame */
+        cf = (struct can_frame *)nskb->data;
+
+        /* perform preprocessed modification functions if there are any */
+        while (modidx < MAX_MODFUNCTIONS && gwj->mod.modfunc[modidx])
+                (*gwj->mod.modfunc[modidx++])(cf, &gwj->mod);
+
+        /* check for checksum updates when the CAN frame has been modified */
+        if (modidx) {
+                if (gwj->mod.csumfunc.crc8)
+                        (*gwj->mod.csumfunc.crc8)(cf, &gwj->mod.csum.crc8);
+
+                if (gwj->mod.csumfunc.xor)
+                        (*gwj->mod.csumfunc.xor)(cf, &gwj->mod.csum.xor);
+        }
+
+        /* clear the skb timestamp if not configured the other way */
+        if (!(gwj->flags & CGW_FLAGS_CAN_SRC_TSTAMP))
+                nskb->tstamp.tv64 = 0;
+
+        /* send to netdevice */
+        if (can_send(nskb, gwj->flags & CGW_FLAGS_CAN_ECHO))
+                gwj->dropped_frames++;
+        else
+                gwj->handled_frames++;
+}
+
+static inline int cgw_register_filter(struct cgw_job *gwj)
+{
+        return can_rx_register(gwj->src.dev, gwj->ccgw.filter.can_id,
+                               gwj->ccgw.filter.can_mask, can_can_gw_rcv,
+                               gwj, "gw");
+}
+
+static inline void cgw_unregister_filter(struct cgw_job *gwj)
+{
+        can_rx_unregister(gwj->src.dev, gwj->ccgw.filter.can_id,
+                          gwj->ccgw.filter.can_mask, can_can_gw_rcv, gwj);
+}
+
+static int cgw_notifier(struct notifier_block *nb,
+                        unsigned long msg, void *data)
+{
+        struct net_device *dev = (struct net_device *)data;
+
+        if (!net_eq(dev_net(dev), &init_net))
+                return NOTIFY_DONE;
+        if (dev->type != ARPHRD_CAN)
+                return NOTIFY_DONE;
+
+        if (msg == NETDEV_UNREGISTER) {
+
+                struct cgw_job *gwj = NULL;
+                struct hlist_node *n, *nx;
+
+                ASSERT_RTNL();
+
+                hlist_for_each_entry_safe(gwj, n, nx, &cgw_list, list) {
+
+                        if (gwj->src.dev == dev || gwj->dst.dev == dev) {
+                                hlist_del(&gwj->list);
+                                cgw_unregister_filter(gwj);
+                                kfree(gwj);
+                        }
+                }
+        }
+
+        return NOTIFY_DONE;
+}
+
+static int cgw_put_job(struct sk_buff *skb, struct cgw_job *gwj)
+{
+        struct cgw_frame_mod mb;
+        struct rtcanmsg *rtcan;
+        struct nlmsghdr *nlh = nlmsg_put(skb, 0, 0, 0, sizeof(*rtcan), 0);
+        if (!nlh)
+                return -EMSGSIZE;
+
+        rtcan = nlmsg_data(nlh);
+        rtcan->can_family = AF_CAN;
+        rtcan->gwtype = gwj->gwtype;
+        rtcan->flags = gwj->flags;
+
+        /* add statistics if available */
+
+        if (gwj->handled_frames) {
+                if (nla_put_u32(skb, CGW_HANDLED, gwj->handled_frames) < 0)
+                        goto cancel;
+                else
+                        nlh->nlmsg_len += NLA_HDRLEN + NLA_ALIGN(sizeof(u32));
+        }
+
+        if (gwj->dropped_frames) {
+                if (nla_put_u32(skb, CGW_DROPPED, gwj->dropped_frames) < 0)
+                        goto cancel;
+                else
+                        nlh->nlmsg_len += NLA_HDRLEN + NLA_ALIGN(sizeof(u32));
+        }
+
+        /* check non default settings of attributes */
+
+        if (gwj->mod.modtype.and) {
+                memcpy(&mb.cf, &gwj->mod.modframe.and, sizeof(mb.cf));
+                mb.modtype = gwj->mod.modtype.and;
+                if (nla_put(skb, CGW_MOD_AND, sizeof(mb), &mb) < 0)
+                        goto cancel;
+                else
+                        nlh->nlmsg_len += NLA_HDRLEN + NLA_ALIGN(sizeof(mb));
+        }
+
+        if (gwj->mod.modtype.or) {
+                memcpy(&mb.cf, &gwj->mod.modframe.or, sizeof(mb.cf));
+                mb.modtype = gwj->mod.modtype.or;
+                if (nla_put(skb, CGW_MOD_OR, sizeof(mb), &mb) < 0)
+                        goto cancel;
+                else
+                        nlh->nlmsg_len += NLA_HDRLEN + NLA_ALIGN(sizeof(mb));
+        }
+
+        if (gwj->mod.modtype.xor) {
+                memcpy(&mb.cf, &gwj->mod.modframe.xor, sizeof(mb.cf));
+                mb.modtype = gwj->mod.modtype.xor;
+                if (nla_put(skb, CGW_MOD_XOR, sizeof(mb), &mb) < 0)
+                        goto cancel;
+                else
+                        nlh->nlmsg_len += NLA_HDRLEN + NLA_ALIGN(sizeof(mb));
+        }
+
+        if (gwj->mod.modtype.set) {
+                memcpy(&mb.cf, &gwj->mod.modframe.set, sizeof(mb.cf));
+                mb.modtype = gwj->mod.modtype.set;
+                if (nla_put(skb, CGW_MOD_SET, sizeof(mb), &mb) < 0)
+                        goto cancel;
+                else
+                        nlh->nlmsg_len += NLA_HDRLEN + NLA_ALIGN(sizeof(mb));
+        }
+
+        if (gwj->mod.csumfunc.crc8) {
+                if (nla_put(skb, CGW_CS_CRC8, CGW_CS_CRC8_LEN,
+                            &gwj->mod.csum.crc8) < 0)
+                        goto cancel;
+                else
+                        nlh->nlmsg_len += NLA_HDRLEN + \
+                                NLA_ALIGN(CGW_CS_CRC8_LEN);
+        }
+
+        if (gwj->mod.csumfunc.xor) {
+                if (nla_put(skb, CGW_CS_XOR, CGW_CS_XOR_LEN,
+                            &gwj->mod.csum.xor) < 0)
+                        goto cancel;
+                else
+                        nlh->nlmsg_len += NLA_HDRLEN + \
+                                NLA_ALIGN(CGW_CS_XOR_LEN);
+        }
+
+        if (gwj->gwtype == CGW_TYPE_CAN_CAN) {
+
+                if (gwj->ccgw.filter.can_id || gwj->ccgw.filter.can_mask) {
+                        if (nla_put(skb, CGW_FILTER, sizeof(struct can_filter),
+                                    &gwj->ccgw.filter) < 0)
+                                goto cancel;
+                        else
+                                nlh->nlmsg_len += NLA_HDRLEN +
+                                        NLA_ALIGN(sizeof(struct can_filter));
+                }
+
+                if (nla_put_u32(skb, CGW_SRC_IF, gwj->ccgw.src_idx) < 0)
+                        goto cancel;
+                else
+                        nlh->nlmsg_len += NLA_HDRLEN + NLA_ALIGN(sizeof(u32));
+
+                if (nla_put_u32(skb, CGW_DST_IF, gwj->ccgw.dst_idx) < 0)
+                        goto cancel;
+                else
+                        nlh->nlmsg_len += NLA_HDRLEN + NLA_ALIGN(sizeof(u32));
+        }
+
+        return skb->len;
+
+cancel:
+        nlmsg_cancel(skb, nlh);
+        return -EMSGSIZE;
+}
+
+/* Dump information about all CAN gateway jobs, in response to RTM_GETROUTE */
+static int cgw_dump_jobs(struct sk_buff *skb, struct netlink_callback *cb)
+{
+        struct cgw_job *gwj = NULL;
+        struct hlist_node *n;
+        int idx = 0;
+        int s_idx = cb->args[0];
+
+        rcu_read_lock();
+        hlist_for_each_entry_rcu(gwj, n, &cgw_list, list) {
+                if (idx < s_idx)
+                        goto cont;
+
+                if (cgw_put_job(skb, gwj) < 0)
+                        break;
+cont:
+                idx++;
+        }
+        rcu_read_unlock();
+
+        cb->args[0] = idx;
+
+        return skb->len;
+}
+
+/* check for common and gwtype specific attributes */
+static int cgw_parse_attr(struct nlmsghdr *nlh, struct cf_mod *mod,
+                          u8 gwtype, void *gwtypeattr)
+{
+        struct nlattr *tb[CGW_MAX+1];
+        struct cgw_frame_mod mb;
+        int modidx = 0;
+        int err = 0;
+
+        /* initialize modification & checksum data space */
+        memset(mod, 0, sizeof(*mod));
+
+        err = nlmsg_parse(nlh, sizeof(struct rtcanmsg), tb, CGW_MAX, NULL);
+        if (err < 0)
+                return err;
+
+        /* check for AND/OR/XOR/SET modifications */
+
+        if (tb[CGW_MOD_AND] &&
+            nla_len(tb[CGW_MOD_AND]) == CGW_MODATTR_LEN) {
+                nla_memcpy(&mb, tb[CGW_MOD_AND], CGW_MODATTR_LEN);
+
+                canframecpy(&mod->modframe.and, &mb.cf);
+                mod->modtype.and = mb.modtype;
+
+                if (mb.modtype & CGW_MOD_ID)
+                        mod->modfunc[modidx++] = mod_and_id;
+
+                if (mb.modtype & CGW_MOD_DLC)
+                        mod->modfunc[modidx++] = mod_and_dlc;
+
+                if (mb.modtype & CGW_MOD_DATA)
+                        mod->modfunc[modidx++] = mod_and_data;
+        }
+
+        if (tb[CGW_MOD_OR] &&
+            nla_len(tb[CGW_MOD_OR]) == CGW_MODATTR_LEN) {
+                nla_memcpy(&mb, tb[CGW_MOD_OR], CGW_MODATTR_LEN);
+
+                canframecpy(&mod->modframe.or, &mb.cf);
+                mod->modtype.or = mb.modtype;
+
+                if (mb.modtype & CGW_MOD_ID)
+                        mod->modfunc[modidx++] = mod_or_id;
+
+                if (mb.modtype & CGW_MOD_DLC)
+                        mod->modfunc[modidx++] = mod_or_dlc;
+
+                if (mb.modtype & CGW_MOD_DATA)
+                        mod->modfunc[modidx++] = mod_or_data;
+        }
+
+        if (tb[CGW_MOD_XOR] &&
+            nla_len(tb[CGW_MOD_XOR]) == CGW_MODATTR_LEN) {
+                nla_memcpy(&mb, tb[CGW_MOD_XOR], CGW_MODATTR_LEN);
+
+                canframecpy(&mod->modframe.xor, &mb.cf);
+                mod->modtype.xor = mb.modtype;
+
+                if (mb.modtype & CGW_MOD_ID)
+                        mod->modfunc[modidx++] = mod_xor_id;
+
+                if (mb.modtype & CGW_MOD_DLC)
+                        mod->modfunc[modidx++] = mod_xor_dlc;
+
+                if (mb.modtype & CGW_MOD_DATA)
+                        mod->modfunc[modidx++] = mod_xor_data;
+        }
+
+        if (tb[CGW_MOD_SET] &&
+            nla_len(tb[CGW_MOD_SET]) == CGW_MODATTR_LEN) {
+                nla_memcpy(&mb, tb[CGW_MOD_SET], CGW_MODATTR_LEN);
+
+                canframecpy(&mod->modframe.set, &mb.cf);
+                mod->modtype.set = mb.modtype;
+
+                if (mb.modtype & CGW_MOD_ID)
+                        mod->modfunc[modidx++] = mod_set_id;
+
+                if (mb.modtype & CGW_MOD_DLC)
+                        mod->modfunc[modidx++] = mod_set_dlc;
+
+                if (mb.modtype & CGW_MOD_DATA)
+                        mod->modfunc[modidx++] = mod_set_data;
+        }
+
+        /* check for checksum operations after CAN frame modifications */
+        if (modidx) {
+
+                if (tb[CGW_CS_CRC8] &&
+                    nla_len(tb[CGW_CS_CRC8]) == CGW_CS_CRC8_LEN) {
+
+                        struct cgw_csum_crc8 *c = (struct cgw_csum_crc8 *)\
+                                nla_data(tb[CGW_CS_CRC8]);
+
+                        err = cgw_chk_csum_parms(c->from_idx, c->to_idx,
+                                                 c->result_idx);
+                        if (err)
+                                return err;
+
+                        nla_memcpy(&mod->csum.crc8, tb[CGW_CS_CRC8],
+                                   CGW_CS_CRC8_LEN);
+
+                        /*
+                         * select dedicated processing function to reduce
+                         * runtime operations in receive hot path.
+                         */
+                        if (c->from_idx < 0 || c->to_idx < 0 ||
+                            c->result_idx < 0)
+                                mod->csumfunc.crc8 = cgw_csum_crc8_rel;
+                        else if (c->from_idx <= c->to_idx)
+                                mod->csumfunc.crc8 = cgw_csum_crc8_pos;
+                        else
+                                mod->csumfunc.crc8 = cgw_csum_crc8_neg;
+                }
+
+                if (tb[CGW_CS_XOR] &&
+                    nla_len(tb[CGW_CS_XOR]) == CGW_CS_XOR_LEN) {
+
+                        struct cgw_csum_xor *c = (struct cgw_csum_xor *)\
+                                nla_data(tb[CGW_CS_XOR]);
+
+                        err = cgw_chk_csum_parms(c->from_idx, c->to_idx,
+                                                 c->result_idx);
+                        if (err)
+                                return err;
+
+                        nla_memcpy(&mod->csum.xor, tb[CGW_CS_XOR],
+                                   CGW_CS_XOR_LEN);
+
+                        /*
+                         * select dedicated processing function to reduce
+                         * runtime operations in receive hot path.
+                         */
+                        if (c->from_idx < 0 || c->to_idx < 0 ||
+                            c->result_idx < 0)
+                                mod->csumfunc.xor = cgw_csum_xor_rel;
+                        else if (c->from_idx <= c->to_idx)
+                                mod->csumfunc.xor = cgw_csum_xor_pos;
+                        else
+                                mod->csumfunc.xor = cgw_csum_xor_neg;
+                }
+        }
+
+        if (gwtype == CGW_TYPE_CAN_CAN) {
+
+                /* check CGW_TYPE_CAN_CAN specific attributes */
+
+                struct can_can_gw *ccgw = (struct can_can_gw *)gwtypeattr;
+                memset(ccgw, 0, sizeof(*ccgw));
+
+                /* check for can_filter in attributes */
+                if (tb[CGW_FILTER] &&
+                    nla_len(tb[CGW_FILTER]) == sizeof(struct can_filter))
+                        nla_memcpy(&ccgw->filter, tb[CGW_FILTER],
+                                   sizeof(struct can_filter));
+
+                err = -ENODEV;
+
+                /* specifying two interfaces is mandatory */
+                if (!tb[CGW_SRC_IF] || !tb[CGW_DST_IF])
+                        return err;
+
+                if (nla_len(tb[CGW_SRC_IF]) == sizeof(u32))
+                        nla_memcpy(&ccgw->src_idx, tb[CGW_SRC_IF],
+                                   sizeof(u32));
+
+                if (nla_len(tb[CGW_DST_IF]) == sizeof(u32))
+                        nla_memcpy(&ccgw->dst_idx, tb[CGW_DST_IF],
+                                   sizeof(u32));
+
+                /* both indices set to 0 for flushing all routing entries */
+                if (!ccgw->src_idx && !ccgw->dst_idx)
+                        return 0;
+
+                /* only one index set to 0 is an error */
+                if (!ccgw->src_idx || !ccgw->dst_idx)
+                        return err;
+        }
+
+        /* add the checks for other gwtypes here */
+
+        return 0;
+}
+
+static int cgw_create_job(struct sk_buff *skb,  struct nlmsghdr *nlh,
+                          void *arg)
+{
+        struct rtcanmsg *r;
+        struct cgw_job *gwj;
+        int err = 0;
+
+        if (nlmsg_len(nlh) < sizeof(*r))
+                return -EINVAL;
+
+        r = nlmsg_data(nlh);
+        if (r->can_family != AF_CAN)
+                return -EPFNOSUPPORT;
+
+        /* so far we only support CAN -> CAN routings */
+        if (r->gwtype != CGW_TYPE_CAN_CAN)
+                return -EINVAL;
+
+        gwj = kmem_cache_alloc(cgw_cache, GFP_KERNEL);
+        if (!gwj)
+                return -ENOMEM;
+
+        gwj->handled_frames = 0;
+        gwj->dropped_frames = 0;
+        gwj->flags = r->flags;
+        gwj->gwtype = r->gwtype;
+
+        err = cgw_parse_attr(nlh, &gwj->mod, CGW_TYPE_CAN_CAN, &gwj->ccgw);
+        if (err < 0)
+                goto out;
+
+        err = -ENODEV;
+
+        /* ifindex == 0 is not allowed for job creation */
+        if (!gwj->ccgw.src_idx || !gwj->ccgw.dst_idx)
+                goto out;
+
+        gwj->src.dev = dev_get_by_index(&init_net, gwj->ccgw.src_idx);
+
+        if (!gwj->src.dev)
+                goto out;
+
+        /* check for CAN netdev not using header_ops - see gw_rcv() */
+        if (gwj->src.dev->type != ARPHRD_CAN || gwj->src.dev->header_ops)
+                goto put_src_out;
+
+        gwj->dst.dev = dev_get_by_index(&init_net, gwj->ccgw.dst_idx);
+
+        if (!gwj->dst.dev)
+                goto put_src_out;
+
+        /* check for CAN netdev not using header_ops - see gw_rcv() */
+        if (gwj->dst.dev->type != ARPHRD_CAN || gwj->dst.dev->header_ops)
+                goto put_src_dst_out;
+
+        ASSERT_RTNL();
+
+        err = cgw_register_filter(gwj);
+        if (!err)
+                hlist_add_head_rcu(&gwj->list, &cgw_list);
+
+put_src_dst_out:
+        dev_put(gwj->dst.dev);
+put_src_out:
+        dev_put(gwj->src.dev);
+out:
+        if (err)
+                kmem_cache_free(cgw_cache, gwj);
+
+        return err;
+}
+
+static void cgw_remove_all_jobs(void)
+{
+        struct cgw_job *gwj = NULL;
+        struct hlist_node *n, *nx;
+
+        ASSERT_RTNL();
+
+        hlist_for_each_entry_safe(gwj, n, nx, &cgw_list, list) {
+                hlist_del(&gwj->list);
+                cgw_unregister_filter(gwj);
+                kfree(gwj);
+        }
+}
+
+static int cgw_remove_job(struct sk_buff *skb,  struct nlmsghdr *nlh, void *arg)
+{
+        struct cgw_job *gwj = NULL;
+        struct hlist_node *n, *nx;
+        struct rtcanmsg *r;
+        struct cf_mod mod;
+        struct can_can_gw ccgw;
+        int err = 0;
+
+        if (nlmsg_len(nlh) < sizeof(*r))
+                return -EINVAL;
+
+        r = nlmsg_data(nlh);
+        if (r->can_family != AF_CAN)
+                return -EPFNOSUPPORT;
+
+        /* so far we only support CAN -> CAN routings */
+        if (r->gwtype != CGW_TYPE_CAN_CAN)
+                return -EINVAL;
+
+        err = cgw_parse_attr(nlh, &mod, CGW_TYPE_CAN_CAN, &ccgw);
+        if (err < 0)
+                return err;
+
+        /* two interface indices both set to 0 => remove all entries */
+        if (!ccgw.src_idx && !ccgw.dst_idx) {
+                cgw_remove_all_jobs();
+                return 0;
+        }
+
+        err = -EINVAL;
+
+        ASSERT_RTNL();
+
+        /* remove only the first matching entry */
+        hlist_for_each_entry_safe(gwj, n, nx, &cgw_list, list) {
+
+                if (gwj->flags != r->flags)
+                        continue;
+
+                if (memcmp(&gwj->mod, &mod, sizeof(mod)))
+                        continue;
+
+                /* if (r->gwtype == CGW_TYPE_CAN_CAN) - is made sure here */
+                if (memcmp(&gwj->ccgw, &ccgw, sizeof(ccgw)))
+                        continue;
+
+                hlist_del(&gwj->list);
+                cgw_unregister_filter(gwj);
+                kfree(gwj);
+                err = 0;
+                break;
+        }
+
+        return err;
+}
+
+static __init int cgw_module_init(void)
+{
+        printk(banner);
+
+        cgw_cache = kmem_cache_create("can_gw", sizeof(struct cgw_job),
+                                      0, 0, NULL);
+
+        if (!cgw_cache)
+                return -ENOMEM;
+
+        /* set notifier */
+        notifier.notifier_call = cgw_notifier;
+        register_netdevice_notifier(&notifier);
+
+        if (__rtnl_register(PF_CAN, RTM_GETROUTE, NULL, cgw_dump_jobs, NULL)) {
+                unregister_netdevice_notifier(&notifier);
+                kmem_cache_destroy(cgw_cache);
+                return -ENOBUFS;
+        }
+
+        /* Only the first call to __rtnl_register can fail */
+        __rtnl_register(PF_CAN, RTM_NEWROUTE, cgw_create_job, NULL, NULL);
+        __rtnl_register(PF_CAN, RTM_DELROUTE, cgw_remove_job, NULL, NULL);
+
+        return 0;
+}
+
+static __exit void cgw_module_exit(void)
+{
+        rtnl_unregister_all(PF_CAN);
+
+        unregister_netdevice_notifier(&notifier);
+
+        rtnl_lock();
+        cgw_remove_all_jobs();
+        rtnl_unlock();
+
+        rcu_barrier(); /* Wait for completion of call_rcu()'s */
+
+        kmem_cache_destroy(cgw_cache);
+}
+
+module_init(cgw_module_init);
+module_exit(cgw_module_exit);
diff --git a/net/can/proc.c b/net/can/proc.c
index 0016f7339699..ba873c36d2fd 100644
--- a/net/can/proc.c
+++ b/net/can/proc.c
@@ -37,8 +37,6 @@
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
  * DAMAGE.
  *
- * Send feedback to <socketcan-users@lists.berlios.de>
- *
  */
 
 #include <linux/module.h>
diff --git a/net/can/raw.c b/net/can/raw.c
index dea99a6e596c..cde1b4a20f75 100644
--- a/net/can/raw.c
+++ b/net/can/raw.c
@@ -37,8 +37,6 @@
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
  * DAMAGE.
  *
- * Send feedback to <socketcan-users@lists.berlios.de>
- *
  */
 
 #include <linux/module.h>
diff --git a/net/ceph/Kconfig b/net/ceph/Kconfig
index be683f2d401f..cc04dd667a10 100644
--- a/net/ceph/Kconfig
+++ b/net/ceph/Kconfig
@@ -27,3 +27,17 @@ config CEPH_LIB_PRETTYDEBUG
 
           If unsure, say N.
 
+config CEPH_LIB_USE_DNS_RESOLVER
+        bool "Use in-kernel support for DNS lookup"
+        depends on CEPH_LIB
+        select DNS_RESOLVER
+        default n
+        help
+          If you say Y here, hostnames (e.g. monitor addresses) will
+          be resolved using the CONFIG_DNS_RESOLVER facility.
+
+          For information on how to use CONFIG_DNS_RESOLVER consult
+          Documentation/networking/dns_resolver.txt
+
+          If unsure, say N.
+
diff --git a/net/ceph/ceph_common.c b/net/ceph/ceph_common.c
index 2883ea01e680..97f70e50ad3b 100644
--- a/net/ceph/ceph_common.c
+++ b/net/ceph/ceph_common.c
@@ -432,9 +432,12 @@ EXPORT_SYMBOL(ceph_client_id);
 /*
  * create a fresh client instance
  */
-struct ceph_client *ceph_create_client(struct ceph_options *opt, void *private)
+struct ceph_client *ceph_create_client(struct ceph_options *opt, void *private,
+                                       unsigned supported_features,
+                                       unsigned required_features)
 {
         struct ceph_client *client;
+        struct ceph_entity_addr *myaddr = NULL;
         int err = -ENOMEM;
 
         client = kzalloc(sizeof(*client), GFP_KERNEL);
@@ -449,15 +452,27 @@ struct ceph_client *ceph_create_client(struct ceph_options *opt, void *private)
         client->auth_err = 0;
 
         client->extra_mon_dispatch = NULL;
-        client->supported_features = CEPH_FEATURE_SUPPORTED_DEFAULT;
-        client->required_features = CEPH_FEATURE_REQUIRED_DEFAULT;
-
-        client->msgr = NULL;
+        client->supported_features = CEPH_FEATURE_SUPPORTED_DEFAULT |
+                supported_features;
+        client->required_features = CEPH_FEATURE_REQUIRED_DEFAULT |
+                required_features;
+
+        /* msgr */
+        if (ceph_test_opt(client, MYIP))
+                myaddr = &client->options->my_addr;
+        client->msgr = ceph_messenger_create(myaddr,
+                                             client->supported_features,
+                                             client->required_features);
+        if (IS_ERR(client->msgr)) {
+                err = PTR_ERR(client->msgr);
+                goto fail;
+        }
+        client->msgr->nocrc = ceph_test_opt(client, NOCRC);
 
         /* subsystems */
         err = ceph_monc_init(&client->monc, client);
         if (err < 0)
-                goto fail;
+                goto fail_msgr;
         err = ceph_osdc_init(&client->osdc, client);
         if (err < 0)
                 goto fail_monc;
@@ -466,6 +481,8 @@ struct ceph_client *ceph_create_client(struct ceph_options *opt, void *private)
 
 fail_monc:
         ceph_monc_stop(&client->monc);
+fail_msgr:
+        ceph_messenger_destroy(client->msgr);
 fail:
         kfree(client);
         return ERR_PTR(err);
@@ -490,8 +507,7 @@ void ceph_destroy_client(struct ceph_client *client)
 
         ceph_debugfs_client_cleanup(client);
 
-        if (client->msgr)
-                ceph_messenger_destroy(client->msgr);
+        ceph_messenger_destroy(client->msgr);
 
         ceph_destroy_options(client->options);
 
@@ -514,24 +530,9 @@ static int have_mon_and_osd_map(struct ceph_client *client)
  */
 int __ceph_open_session(struct ceph_client *client, unsigned long started)
 {
-        struct ceph_entity_addr *myaddr = NULL;
         int err;
         unsigned long timeout = client->options->mount_timeout * HZ;
 
-        /* initialize the messenger */
-        if (client->msgr == NULL) {
-                if (ceph_test_opt(client, MYIP))
-                        myaddr = &client->options->my_addr;
-                client->msgr = ceph_messenger_create(myaddr,
-                                        client->supported_features,
-                                        client->required_features);
-                if (IS_ERR(client->msgr)) {
-                        client->msgr = NULL;
-                        return PTR_ERR(client->msgr);
-                }
-                client->msgr->nocrc = ceph_test_opt(client, NOCRC);
-        }
-
         /* open session, and wait for mon and osd maps */
         err = ceph_monc_open_session(&client->monc);
         if (err < 0)
diff --git a/net/ceph/messenger.c b/net/ceph/messenger.c
index 9918e9eb276e..ad5b70801f37 100644
--- a/net/ceph/messenger.c
+++ b/net/ceph/messenger.c
@@ -11,12 +11,14 @@
 #include <linux/string.h>
 #include <linux/bio.h>
 #include <linux/blkdev.h>
+#include <linux/dns_resolver.h>
 #include <net/tcp.h>
 
 #include <linux/ceph/libceph.h>
 #include <linux/ceph/messenger.h>
 #include <linux/ceph/decode.h>
 #include <linux/ceph/pagelist.h>
+#include <linux/export.h>
 
 /*
  * Ceph uses the messenger to exchange ceph_msg messages with other
@@ -1078,6 +1080,101 @@ static void addr_set_port(struct sockaddr_storage *ss, int p)
 }
 
 /*
+ * Unlike other *_pton function semantics, zero indicates success.
+ */
+static int ceph_pton(const char *str, size_t len, struct sockaddr_storage *ss,
+                char delim, const char **ipend)
+{
+        struct sockaddr_in *in4 = (void *)ss;
+        struct sockaddr_in6 *in6 = (void *)ss;
+
+        memset(ss, 0, sizeof(*ss));
+
+        if (in4_pton(str, len, (u8 *)&in4->sin_addr.s_addr, delim, ipend)) {
+                ss->ss_family = AF_INET;
+                return 0;
+        }
+
+        if (in6_pton(str, len, (u8 *)&in6->sin6_addr.s6_addr, delim, ipend)) {
+                ss->ss_family = AF_INET6;
+                return 0;
+        }
+
+        return -EINVAL;
+}
+
+/*
+ * Extract hostname string and resolve using kernel DNS facility.
+ */
+#ifdef CONFIG_CEPH_LIB_USE_DNS_RESOLVER
+static int ceph_dns_resolve_name(const char *name, size_t namelen,
+                struct sockaddr_storage *ss, char delim, const char **ipend)
+{
+        const char *end, *delim_p;
+        char *colon_p, *ip_addr = NULL;
+        int ip_len, ret;
+
+        /*
+         * The end of the hostname occurs immediately preceding the delimiter or
+         * the port marker (':') where the delimiter takes precedence.
+         */
+        delim_p = memchr(name, delim, namelen);
+        colon_p = memchr(name, ':', namelen);
+
+        if (delim_p && colon_p)
+                end = delim_p < colon_p ? delim_p : colon_p;
+        else if (!delim_p && colon_p)
+                end = colon_p;
+        else {
+                end = delim_p;
+                if (!end) /* case: hostname:/ */
+                        end = name + namelen;
+        }
+
+        if (end <= name)
+                return -EINVAL;
+
+        /* do dns_resolve upcall */
+        ip_len = dns_query(NULL, name, end - name, NULL, &ip_addr, NULL);
+        if (ip_len > 0)
+                ret = ceph_pton(ip_addr, ip_len, ss, -1, NULL);
+        else
+                ret = -ESRCH;
+
+        kfree(ip_addr);
+
+        *ipend = end;
+
+        pr_info("resolve '%.*s' (ret=%d): %s\n", (int)(end - name), name,
+                        ret, ret ? "failed" : ceph_pr_addr(ss));
+
+        return ret;
+}
+#else
+static inline int ceph_dns_resolve_name(const char *name, size_t namelen,
+                struct sockaddr_storage *ss, char delim, const char **ipend)
+{
+        return -EINVAL;
+}
+#endif
+
+/*
+ * Parse a server name (IP or hostname). If a valid IP address is not found
+ * then try to extract a hostname to resolve using userspace DNS upcall.
+ */
+static int ceph_parse_server_name(const char *name, size_t namelen,
+                        struct sockaddr_storage *ss, char delim, const char **ipend)
+{
+        int ret;
+
+        ret = ceph_pton(name, namelen, ss, delim, ipend);
+        if (ret)
+                ret = ceph_dns_resolve_name(name, namelen, ss, delim, ipend);
+
+        return ret;
+}
+
+/*
  * Parse an ip[:port] list into an addr array.  Use the default
  * monitor port if a port isn't specified.
  */
@@ -1085,15 +1182,13 @@ int ceph_parse_ips(const char *c, const char *end,
                    struct ceph_entity_addr *addr,
                    int max_count, int *count)
 {
-        int i;
+        int i, ret = -EINVAL;
         const char *p = c;
 
         dout("parse_ips on '%.*s'\n", (int)(end-c), c);
         for (i = 0; i < max_count; i++) {
                 const char *ipend;
                 struct sockaddr_storage *ss = &addr[i].in_addr;
-                struct sockaddr_in *in4 = (void *)ss;
-                struct sockaddr_in6 *in6 = (void *)ss;
                 int port;
                 char delim = ',';
 
@@ -1102,15 +1197,11 @@ int ceph_parse_ips(const char *c, const char *end,
                         p++;
                 }
 
-                memset(ss, 0, sizeof(*ss));
-                if (in4_pton(p, end - p, (u8 *)&in4->sin_addr.s_addr,
-                             delim, &ipend))
-                        ss->ss_family = AF_INET;
-                else if (in6_pton(p, end - p, (u8 *)&in6->sin6_addr.s6_addr,
-                                  delim, &ipend))
-                        ss->ss_family = AF_INET6;
-                else
+                ret = ceph_parse_server_name(p, end - p, ss, delim, &ipend);
+                if (ret)
                         goto bad;
+                ret = -EINVAL;
+
                 p = ipend;
 
                 if (delim == ']') {
@@ -1155,7 +1246,7 @@ int ceph_parse_ips(const char *c, const char *end,
 
 bad:
         pr_err("parse_ips bad ip '%.*s'\n", (int)(end - c), c);
-        return -EINVAL;
+        return ret;
 }
 EXPORT_SYMBOL(ceph_parse_ips);
 
@@ -2281,7 +2372,8 @@ EXPORT_SYMBOL(ceph_con_keepalive);
  * construct a new message with given type, size
  * the new msg has a ref count of 1.
  */
-struct ceph_msg *ceph_msg_new(int type, int front_len, gfp_t flags)
+struct ceph_msg *ceph_msg_new(int type, int front_len, gfp_t flags,
+                              bool can_fail)
 {
         struct ceph_msg *m;
 
@@ -2333,7 +2425,7 @@ struct ceph_msg *ceph_msg_new(int type, int front_len, gfp_t flags)
                         m->front.iov_base = kmalloc(front_len, flags);
                 }
                 if (m->front.iov_base == NULL) {
-                        pr_err("msg_new can't allocate %d bytes\n",
+                        dout("ceph_msg_new can't allocate %d bytes\n",
                              front_len);
                         goto out2;
                 }
@@ -2348,7 +2440,14 @@ struct ceph_msg *ceph_msg_new(int type, int front_len, gfp_t flags)
 out2:
         ceph_msg_put(m);
 out:
-        pr_err("msg_new can't create type %d front %d\n", type, front_len);
+        if (!can_fail) {
+                pr_err("msg_new can't create type %d front %d\n", type,
+                       front_len);
+                WARN_ON(1);
+        } else {
+                dout("msg_new can't create type %d front %d\n", type,
+                     front_len);
+        }
         return NULL;
 }
 EXPORT_SYMBOL(ceph_msg_new);
@@ -2398,7 +2497,7 @@ static struct ceph_msg *ceph_alloc_msg(struct ceph_connection *con,
         }
         if (!msg) {
                 *skip = 0;
-                msg = ceph_msg_new(type, front_len, GFP_NOFS);
+                msg = ceph_msg_new(type, front_len, GFP_NOFS, false);
                 if (!msg) {
                         pr_err("unable to allocate msg type %d len %d\n",
                                type, front_len);
diff --git a/net/ceph/mon_client.c b/net/ceph/mon_client.c
index cbe31fa45508..0b62deae42bd 100644
--- a/net/ceph/mon_client.c
+++ b/net/ceph/mon_client.c
@@ -116,14 +116,12 @@ static void __send_prepared_auth_request(struct ceph_mon_client *monc, int len)
  */
 static void __close_session(struct ceph_mon_client *monc)
 {
-        if (monc->con) {
-                dout("__close_session closing mon%d\n", monc->cur_mon);
-                ceph_con_revoke(monc->con, monc->m_auth);
-                ceph_con_close(monc->con);
-                monc->cur_mon = -1;
-                monc->pending_auth = 0;
-                ceph_auth_reset(monc->auth);
-        }
+        dout("__close_session closing mon%d\n", monc->cur_mon);
+        ceph_con_revoke(monc->con, monc->m_auth);
+        ceph_con_close(monc->con);
+        monc->cur_mon = -1;
+        monc->pending_auth = 0;
+        ceph_auth_reset(monc->auth);
 }
 
 /*
@@ -302,15 +300,6 @@ void ceph_monc_request_next_osdmap(struct ceph_mon_client *monc)
  */
 int ceph_monc_open_session(struct ceph_mon_client *monc)
 {
-        if (!monc->con) {
-                monc->con = kmalloc(sizeof(*monc->con), GFP_KERNEL);
-                if (!monc->con)
-                        return -ENOMEM;
-                ceph_con_init(monc->client->msgr, monc->con);
-                monc->con->private = monc;
-                monc->con->ops = &mon_con_ops;
-        }
-
         mutex_lock(&monc->mutex);
         __open_session(monc);
         __schedule_delayed(monc);
@@ -528,10 +517,12 @@ int ceph_monc_do_statfs(struct ceph_mon_client *monc, struct ceph_statfs *buf)
         init_completion(&req->completion);
 
         err = -ENOMEM;
-        req->request = ceph_msg_new(CEPH_MSG_STATFS, sizeof(*h), GFP_NOFS);
+        req->request = ceph_msg_new(CEPH_MSG_STATFS, sizeof(*h), GFP_NOFS,
+                                    true);
         if (!req->request)
                 goto out;
-        req->reply = ceph_msg_new(CEPH_MSG_STATFS_REPLY, 1024, GFP_NOFS);
+        req->reply = ceph_msg_new(CEPH_MSG_STATFS_REPLY, 1024, GFP_NOFS,
+                                  true);
         if (!req->reply)
                 goto out;
 
@@ -626,10 +617,12 @@ int ceph_monc_do_poolop(struct ceph_mon_client *monc, u32 op,
         init_completion(&req->completion);
 
         err = -ENOMEM;
-        req->request = ceph_msg_new(CEPH_MSG_POOLOP, sizeof(*h), GFP_NOFS);
+        req->request = ceph_msg_new(CEPH_MSG_POOLOP, sizeof(*h), GFP_NOFS,
+                                    true);
         if (!req->request)
                 goto out;
-        req->reply = ceph_msg_new(CEPH_MSG_POOLOP_REPLY, 1024, GFP_NOFS);
+        req->reply = ceph_msg_new(CEPH_MSG_POOLOP_REPLY, 1024, GFP_NOFS,
+                                  true);
         if (!req->reply)
                 goto out;
 
@@ -755,13 +748,21 @@ int ceph_monc_init(struct ceph_mon_client *monc, struct ceph_client *cl)
         if (err)
                 goto out;
 
-        monc->con = NULL;
+        /* connection */
+        monc->con = kmalloc(sizeof(*monc->con), GFP_KERNEL);
+        if (!monc->con)
+                goto out_monmap;
+        ceph_con_init(monc->client->msgr, monc->con);
+        monc->con->private = monc;
+        monc->con->ops = &mon_con_ops;
 
         /* authentication */
         monc->auth = ceph_auth_init(cl->options->name,
                                     cl->options->key);
-        if (IS_ERR(monc->auth))
-                return PTR_ERR(monc->auth);
+        if (IS_ERR(monc->auth)) {
+                err = PTR_ERR(monc->auth);
+                goto out_con;
+        }
         monc->auth->want_keys =
                 CEPH_ENTITY_TYPE_AUTH | CEPH_ENTITY_TYPE_MON |
                 CEPH_ENTITY_TYPE_OSD | CEPH_ENTITY_TYPE_MDS;
@@ -770,19 +771,21 @@ int ceph_monc_init(struct ceph_mon_client *monc, struct ceph_client *cl)
         err = -ENOMEM;
         monc->m_subscribe_ack = ceph_msg_new(CEPH_MSG_MON_SUBSCRIBE_ACK,
                                      sizeof(struct ceph_mon_subscribe_ack),
-                                     GFP_NOFS);
+                                     GFP_NOFS, true);
         if (!monc->m_subscribe_ack)
-                goto out_monmap;
+                goto out_auth;
 
-        monc->m_subscribe = ceph_msg_new(CEPH_MSG_MON_SUBSCRIBE, 96, GFP_NOFS);
+        monc->m_subscribe = ceph_msg_new(CEPH_MSG_MON_SUBSCRIBE, 96, GFP_NOFS,
+                                         true);
         if (!monc->m_subscribe)
                 goto out_subscribe_ack;
 
-        monc->m_auth_reply = ceph_msg_new(CEPH_MSG_AUTH_REPLY, 4096, GFP_NOFS);
+        monc->m_auth_reply = ceph_msg_new(CEPH_MSG_AUTH_REPLY, 4096, GFP_NOFS,
+                                          true);
         if (!monc->m_auth_reply)
                 goto out_subscribe;
 
-        monc->m_auth = ceph_msg_new(CEPH_MSG_AUTH, 4096, GFP_NOFS);
+        monc->m_auth = ceph_msg_new(CEPH_MSG_AUTH, 4096, GFP_NOFS, true);
         monc->pending_auth = 0;
         if (!monc->m_auth)
                 goto out_auth_reply;
@@ -808,6 +811,10 @@ out_subscribe:
         ceph_msg_put(monc->m_subscribe);
 out_subscribe_ack:
         ceph_msg_put(monc->m_subscribe_ack);
+out_auth:
+        ceph_auth_destroy(monc->auth);
+out_con:
+        monc->con->ops->put(monc->con);
 out_monmap:
         kfree(monc->monmap);
 out:
@@ -822,11 +829,11 @@ void ceph_monc_stop(struct ceph_mon_client *monc)
 
         mutex_lock(&monc->mutex);
         __close_session(monc);
-        if (monc->con) {
-                monc->con->private = NULL;
-                monc->con->ops->put(monc->con);
-                monc->con = NULL;
-        }
+
+        monc->con->private = NULL;
+        monc->con->ops->put(monc->con);
+        monc->con = NULL;
+
         mutex_unlock(&monc->mutex);
 
         ceph_auth_destroy(monc->auth);
@@ -973,7 +980,7 @@ static struct ceph_msg *mon_alloc_msg(struct ceph_connection *con,
         case CEPH_MSG_MON_MAP:
         case CEPH_MSG_MDS_MAP:
         case CEPH_MSG_OSD_MAP:
-                m = ceph_msg_new(type, front_len, GFP_NOFS);
+                m = ceph_msg_new(type, front_len, GFP_NOFS, false);
                 break;
         }
 
@@ -1000,7 +1007,7 @@ static void mon_fault(struct ceph_connection *con)
         if (!con->private)
                 goto out;
 
-        if (monc->con && !monc->hunting)
+        if (!monc->hunting)
                 pr_info("mon%d %s session lost, "
                         "hunting for new mon\n", monc->cur_mon,
                         ceph_pr_addr(&monc->con->peer_addr.in_addr));
diff --git a/net/ceph/msgpool.c b/net/ceph/msgpool.c
index 1f4cb30a42c5..11d5f4196a73 100644
--- a/net/ceph/msgpool.c
+++ b/net/ceph/msgpool.c
@@ -12,7 +12,7 @@ static void *msgpool_alloc(gfp_t gfp_mask, void *arg)
         struct ceph_msgpool *pool = arg;
         struct ceph_msg *msg;
 
-        msg = ceph_msg_new(0, pool->front_len, gfp_mask);
+        msg = ceph_msg_new(0, pool->front_len, gfp_mask, true);
         if (!msg) {
                 dout("msgpool_alloc %s failed\n", pool->name);
         } else {
@@ -61,7 +61,7 @@ struct ceph_msg *ceph_msgpool_get(struct ceph_msgpool *pool,
                 WARN_ON(1);
 
                 /* try to alloc a fresh message */
-                return ceph_msg_new(0, front_len, GFP_NOFS);
+                return ceph_msg_new(0, front_len, GFP_NOFS, false);
         }
 
         msg = mempool_alloc(pool->pool, GFP_NOFS);
diff --git a/net/ceph/osd_client.c b/net/ceph/osd_client.c
index 88ad8a2501b5..733e46008b89 100644
--- a/net/ceph/osd_client.c
+++ b/net/ceph/osd_client.c
@@ -227,7 +227,7 @@ struct ceph_osd_request *ceph_osdc_alloc_request(struct ceph_osd_client *osdc,
                 msg = ceph_msgpool_get(&osdc->msgpool_op_reply, 0);
         else
                 msg = ceph_msg_new(CEPH_MSG_OSD_OPREPLY,
-                                   OSD_OPREPLY_FRONT_LEN, gfp_flags);
+                                   OSD_OPREPLY_FRONT_LEN, gfp_flags, true);
         if (!msg) {
                 ceph_osdc_put_request(req);
                 return NULL;
@@ -250,7 +250,7 @@ struct ceph_osd_request *ceph_osdc_alloc_request(struct ceph_osd_client *osdc,
         if (use_mempool)
                 msg = ceph_msgpool_get(&osdc->msgpool_op, 0);
         else
-                msg = ceph_msg_new(CEPH_MSG_OSD_OP, msg_size, gfp_flags);
+                msg = ceph_msg_new(CEPH_MSG_OSD_OP, msg_size, gfp_flags, true);
         if (!msg) {
                 ceph_osdc_put_request(req);
                 return NULL;
@@ -943,7 +943,7 @@ EXPORT_SYMBOL(ceph_osdc_set_request_linger);
  * Caller should hold map_sem for read and request_mutex.
  */
 static int __map_request(struct ceph_osd_client *osdc,
-                         struct ceph_osd_request *req)
+                         struct ceph_osd_request *req, int force_resend)
 {
         struct ceph_osd_request_head *reqhead = req->r_request->front.iov_base;
         struct ceph_pg pgid;
@@ -967,7 +967,8 @@ static int __map_request(struct ceph_osd_client *osdc,
                 num = err;
         }
 
-        if ((req->r_osd && req->r_osd->o_osd == o &&
+        if ((!force_resend &&
+             req->r_osd && req->r_osd->o_osd == o &&
              req->r_sent >= req->r_osd->o_incarnation &&
              req->r_num_pg_osds == num &&
              memcmp(req->r_pg_osds, acting, sizeof(acting[0])*num) == 0) ||
@@ -1289,18 +1290,18 @@ static void reset_changed_osds(struct ceph_osd_client *osdc)
  *
  * Caller should hold map_sem for read and request_mutex.
  */
-static void kick_requests(struct ceph_osd_client *osdc)
+static void kick_requests(struct ceph_osd_client *osdc, int force_resend)
 {
         struct ceph_osd_request *req, *nreq;
         struct rb_node *p;
         int needmap = 0;
         int err;
 
-        dout("kick_requests\n");
+        dout("kick_requests %s\n", force_resend ? " (force resend)" : "");
         mutex_lock(&osdc->request_mutex);
         for (p = rb_first(&osdc->requests); p; p = rb_next(p)) {
                 req = rb_entry(p, struct ceph_osd_request, r_node);
-                err = __map_request(osdc, req);
+                err = __map_request(osdc, req, force_resend);
                 if (err < 0)
                         continue;  /* error */
                 if (req->r_osd == NULL) {
@@ -1318,7 +1319,7 @@ static void kick_requests(struct ceph_osd_client *osdc)
                                  r_linger_item) {
                 dout("linger req=%p req->r_osd=%p\n", req, req->r_osd);
 
-                err = __map_request(osdc, req);
+                err = __map_request(osdc, req, force_resend);
                 if (err == 0)
                         continue;  /* no change and no osd was specified */
                 if (err < 0)
@@ -1395,7 +1396,7 @@ void ceph_osdc_handle_map(struct ceph_osd_client *osdc, struct ceph_msg *msg)
                                 ceph_osdmap_destroy(osdc->osdmap);
                                 osdc->osdmap = newmap;
                         }
-                        kick_requests(osdc);
+                        kick_requests(osdc, 0);
                         reset_changed_osds(osdc);
                 } else {
                         dout("ignoring incremental map %u len %d\n",
@@ -1423,6 +1424,8 @@ void ceph_osdc_handle_map(struct ceph_osd_client *osdc, struct ceph_msg *msg)
                              "older than our %u\n", epoch, maplen,
                              osdc->osdmap->epoch);
                 } else {
+                        int skipped_map = 0;
+
                         dout("taking full map %u len %d\n", epoch, maplen);
                         newmap = osdmap_decode(&p, p+maplen);
                         if (IS_ERR(newmap)) {
@@ -1432,9 +1435,12 @@ void ceph_osdc_handle_map(struct ceph_osd_client *osdc, struct ceph_msg *msg)
                         BUG_ON(!newmap);
                         oldmap = osdc->osdmap;
                         osdc->osdmap = newmap;
-                        if (oldmap)
+                        if (oldmap) {
+                                if (oldmap->epoch + 1 < newmap->epoch)
+                                        skipped_map = 1;
                                 ceph_osdmap_destroy(oldmap);
-                        kick_requests(osdc);
+                        }
+                        kick_requests(osdc, skipped_map);
                 }
                 p += maplen;
                 nr_maps--;
@@ -1707,7 +1713,7 @@ int ceph_osdc_start_request(struct ceph_osd_client *osdc,
          * the request still han't been touched yet.
          */
         if (req->r_sent == 0) {
-                rc = __map_request(osdc, req);
+                rc = __map_request(osdc, req, 0);
                 if (rc < 0) {
                         if (nofail) {
                                 dout("osdc_start_request failed map, "
@@ -2032,7 +2038,7 @@ static struct ceph_msg *get_reply(struct ceph_connection *con,
         if (front > req->r_reply->front.iov_len) {
                 pr_warning("get_reply front %d > preallocated %d\n",
                            front, (int)req->r_reply->front.iov_len);
-                m = ceph_msg_new(CEPH_MSG_OSD_OPREPLY, front, GFP_NOFS);
+                m = ceph_msg_new(CEPH_MSG_OSD_OPREPLY, front, GFP_NOFS, false);
                 if (!m)
                         goto out;
                 ceph_msg_put(req->r_reply);
@@ -2080,7 +2086,7 @@ static struct ceph_msg *alloc_msg(struct ceph_connection *con,
         switch (type) {
         case CEPH_MSG_OSD_MAP:
         case CEPH_MSG_WATCH_NOTIFY:
-                return ceph_msg_new(type, front, GFP_NOFS);
+                return ceph_msg_new(type, front, GFP_NOFS, false);
         case CEPH_MSG_OSD_OPREPLY:
                 return get_reply(con, hdr, skip);
         default:
diff --git a/net/compat.c b/net/compat.c
index c578d9382e19..6def90e0a112 100644
--- a/net/compat.c
+++ b/net/compat.c
@@ -22,6 +22,7 @@
 #include <linux/filter.h>
 #include <linux/compat.h>
 #include <linux/security.h>
+#include <linux/export.h>
 
 #include <net/scm.h>
 #include <net/sock.h>
diff --git a/net/core/datagram.c b/net/core/datagram.c
index 18ac112ea7ae..68bbf9f65cb0 100644
--- a/net/core/datagram.c
+++ b/net/core/datagram.c
@@ -324,15 +324,15 @@ int skb_copy_datagram_iovec(const struct sk_buff *skb, int offset,
         /* Copy paged appendix. Hmm... why does this look so complicated? */
         for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) {
                 int end;
+                const skb_frag_t *frag = &skb_shinfo(skb)->frags[i];
 
                 WARN_ON(start > offset + len);
 
-                end = start + skb_shinfo(skb)->frags[i].size;
+                end = start + skb_frag_size(frag);
                 if ((copy = end - offset) > 0) {
                         int err;
                         u8  *vaddr;
-                        skb_frag_t *frag = &skb_shinfo(skb)->frags[i];
-                        struct page *page = frag->page;
+                        struct page *page = skb_frag_page(frag);
 
                         if (copy > len)
                                 copy = len;
@@ -410,15 +410,15 @@ int skb_copy_datagram_const_iovec(const struct sk_buff *skb, int offset,
         /* Copy paged appendix. Hmm... why does this look so complicated? */
         for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) {
                 int end;
+                const skb_frag_t *frag = &skb_shinfo(skb)->frags[i];
 
                 WARN_ON(start > offset + len);
 
-                end = start + skb_shinfo(skb)->frags[i].size;
+                end = start + skb_frag_size(frag);
                 if ((copy = end - offset) > 0) {
                         int err;
                         u8  *vaddr;
-                        skb_frag_t *frag = &skb_shinfo(skb)->frags[i];
-                        struct page *page = frag->page;
+                        struct page *page = skb_frag_page(frag);
 
                         if (copy > len)
                                 copy = len;
@@ -500,15 +500,15 @@ int skb_copy_datagram_from_iovec(struct sk_buff *skb, int offset,
         /* Copy paged appendix. Hmm... why does this look so complicated? */
         for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) {
                 int end;
+                const skb_frag_t *frag = &skb_shinfo(skb)->frags[i];
 
                 WARN_ON(start > offset + len);
 
-                end = start + skb_shinfo(skb)->frags[i].size;
+                end = start + skb_frag_size(frag);
                 if ((copy = end - offset) > 0) {
                         int err;
                         u8  *vaddr;
-                        skb_frag_t *frag = &skb_shinfo(skb)->frags[i];
-                        struct page *page = frag->page;
+                        struct page *page = skb_frag_page(frag);
 
                         if (copy > len)
                                 copy = len;
@@ -585,16 +585,16 @@ static int skb_copy_and_csum_datagram(const struct sk_buff *skb, int offset,
 
         for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) {
                 int end;
+                const skb_frag_t *frag = &skb_shinfo(skb)->frags[i];
 
                 WARN_ON(start > offset + len);
 
-                end = start + skb_shinfo(skb)->frags[i].size;
+                end = start + skb_frag_size(frag);
                 if ((copy = end - offset) > 0) {
                         __wsum csum2;
                         int err = 0;
                         u8  *vaddr;
-                        skb_frag_t *frag = &skb_shinfo(skb)->frags[i];
-                        struct page *page = frag->page;
+                        struct page *page = skb_frag_page(frag);
 
                         if (copy > len)
                                 copy = len;
diff --git a/net/core/dev.c b/net/core/dev.c
index b10ff0a71855..6ba50a1e404c 100644
--- a/net/core/dev.c
+++ b/net/core/dev.c
@@ -133,6 +133,10 @@
 #include <linux/pci.h>
 #include <linux/inetdevice.h>
 #include <linux/cpu_rmap.h>
+#include <linux/if_tunnel.h>
+#include <linux/if_pppox.h>
+#include <linux/ppp_defs.h>
+#include <linux/net_tstamp.h>
 
 #include "net-sysfs.h"
 
@@ -1474,6 +1478,57 @@ static inline void net_timestamp_check(struct sk_buff *skb)
                 __net_timestamp(skb);
 }
 
+static int net_hwtstamp_validate(struct ifreq *ifr)
+{
+        struct hwtstamp_config cfg;
+        enum hwtstamp_tx_types tx_type;
+        enum hwtstamp_rx_filters rx_filter;
+        int tx_type_valid = 0;
+        int rx_filter_valid = 0;
+
+        if (copy_from_user(&cfg, ifr->ifr_data, sizeof(cfg)))
+                return -EFAULT;
+
+        if (cfg.flags) /* reserved for future extensions */
+                return -EINVAL;
+
+        tx_type = cfg.tx_type;
+        rx_filter = cfg.rx_filter;
+
+        switch (tx_type) {
+        case HWTSTAMP_TX_OFF:
+        case HWTSTAMP_TX_ON:
+        case HWTSTAMP_TX_ONESTEP_SYNC:
+                tx_type_valid = 1;
+                break;
+        }
+
+        switch (rx_filter) {
+        case HWTSTAMP_FILTER_NONE:
+        case HWTSTAMP_FILTER_ALL:
+        case HWTSTAMP_FILTER_SOME:
+        case HWTSTAMP_FILTER_PTP_V1_L4_EVENT:
+        case HWTSTAMP_FILTER_PTP_V1_L4_SYNC:
+        case HWTSTAMP_FILTER_PTP_V1_L4_DELAY_REQ:
+        case HWTSTAMP_FILTER_PTP_V2_L4_EVENT:
+        case HWTSTAMP_FILTER_PTP_V2_L4_SYNC:
+        case HWTSTAMP_FILTER_PTP_V2_L4_DELAY_REQ:
+        case HWTSTAMP_FILTER_PTP_V2_L2_EVENT:
+        case HWTSTAMP_FILTER_PTP_V2_L2_SYNC:
+        case HWTSTAMP_FILTER_PTP_V2_L2_DELAY_REQ:
+        case HWTSTAMP_FILTER_PTP_V2_EVENT:
+        case HWTSTAMP_FILTER_PTP_V2_SYNC:
+        case HWTSTAMP_FILTER_PTP_V2_DELAY_REQ:
+                rx_filter_valid = 1;
+                break;
+        }
+
+        if (!tx_type_valid || !rx_filter_valid)
+                return -ERANGE;
+
+        return 0;
+}
+
 static inline bool is_skb_forwardable(struct net_device *dev,
                                       struct sk_buff *skb)
 {
@@ -1955,9 +2010,11 @@ static int illegal_highdma(struct net_device *dev, struct sk_buff *skb)
 #ifdef CONFIG_HIGHMEM
         int i;
         if (!(dev->features & NETIF_F_HIGHDMA)) {
-                for (i = 0; i < skb_shinfo(skb)->nr_frags; i++)
-                        if (PageHighMem(skb_shinfo(skb)->frags[i].page))
+                for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) {
+                        skb_frag_t *frag = &skb_shinfo(skb)->frags[i];
+                        if (PageHighMem(skb_frag_page(frag)))
                                 return 1;
+                }
         }
 
         if (PCI_DMA_BUS_IS_PHYS) {
@@ -1966,7 +2023,8 @@ static int illegal_highdma(struct net_device *dev, struct sk_buff *skb)
                 if (!pdev)
                         return 0;
                 for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) {
-                        dma_addr_t addr = page_to_phys(skb_shinfo(skb)->frags[i].page);
+                        skb_frag_t *frag = &skb_shinfo(skb)->frags[i];
+                        dma_addr_t addr = page_to_phys(skb_frag_page(frag));
                         if (!pdev->dma_mask || addr + PAGE_SIZE - 1 > *pdev->dma_mask)
                                 return 1;
                 }
@@ -2527,25 +2585,31 @@ static inline void ____napi_schedule(struct softnet_data *sd,
 
 /*
  * __skb_get_rxhash: calculate a flow hash based on src/dst addresses
- * and src/dst port numbers. Returns a non-zero hash number on success
- * and 0 on failure.
+ * and src/dst port numbers.  Sets rxhash in skb to non-zero hash value
+ * on success, zero indicates no valid hash.  Also, sets l4_rxhash in skb
+ * if hash is a canonical 4-tuple hash over transport ports.
  */
-__u32 __skb_get_rxhash(struct sk_buff *skb)
+void __skb_get_rxhash(struct sk_buff *skb)
 {
         int nhoff, hash = 0, poff;
         const struct ipv6hdr *ip6;
         const struct iphdr *ip;
+        const struct vlan_hdr *vlan;
         u8 ip_proto;
-        u32 addr1, addr2, ihl;
+        u32 addr1, addr2;
+        u16 proto;
         union {
                 u32 v32;
                 u16 v16[2];
         } ports;
 
         nhoff = skb_network_offset(skb);
+        proto = skb->protocol;
 
-        switch (skb->protocol) {
+again:
+        switch (proto) {
         case __constant_htons(ETH_P_IP):
+ip:
                 if (!pskb_may_pull(skb, sizeof(*ip) + nhoff))
                         goto done;
 
@@ -2556,9 +2620,10 @@ __u32 __skb_get_rxhash(struct sk_buff *skb)
                         ip_proto = ip->protocol;
                 addr1 = (__force u32) ip->saddr;
                 addr2 = (__force u32) ip->daddr;
-                ihl = ip->ihl;
+                nhoff += ip->ihl * 4;
                 break;
         case __constant_htons(ETH_P_IPV6):
+ipv6:
                 if (!pskb_may_pull(skb, sizeof(*ip6) + nhoff))
                         goto done;
 
@@ -2566,20 +2631,71 @@ __u32 __skb_get_rxhash(struct sk_buff *skb)
                 ip_proto = ip6->nexthdr;
                 addr1 = (__force u32) ip6->saddr.s6_addr32[3];
                 addr2 = (__force u32) ip6->daddr.s6_addr32[3];
-                ihl = (40 >> 2);
+                nhoff += 40;
                 break;
+        case __constant_htons(ETH_P_8021Q):
+                if (!pskb_may_pull(skb, sizeof(*vlan) + nhoff))
+                        goto done;
+                vlan = (const struct vlan_hdr *) (skb->data + nhoff);
+                proto = vlan->h_vlan_encapsulated_proto;
+                nhoff += sizeof(*vlan);
+                goto again;
+        case __constant_htons(ETH_P_PPP_SES):
+                if (!pskb_may_pull(skb, PPPOE_SES_HLEN + nhoff))
+                        goto done;
+                proto = *((__be16 *) (skb->data + nhoff +
+                                      sizeof(struct pppoe_hdr)));
+                nhoff += PPPOE_SES_HLEN;
+                switch (proto) {
+                case __constant_htons(PPP_IP):
+                        goto ip;
+                case __constant_htons(PPP_IPV6):
+                        goto ipv6;
+                default:
+                        goto done;
+                }
         default:
                 goto done;
         }
 
+        switch (ip_proto) {
+        case IPPROTO_GRE:
+                if (pskb_may_pull(skb, nhoff + 16)) {
+                        u8 *h = skb->data + nhoff;
+                        __be16 flags = *(__be16 *)h;
+
+                        /*
+                         * Only look inside GRE if version zero and no
+                         * routing
+                         */
+                        if (!(flags & (GRE_VERSION|GRE_ROUTING))) {
+                                proto = *(__be16 *)(h + 2);
+                                nhoff += 4;
+                                if (flags & GRE_CSUM)
+                                        nhoff += 4;
+                                if (flags & GRE_KEY)
+                                        nhoff += 4;
+                                if (flags & GRE_SEQ)
+                                        nhoff += 4;
+                                goto again;
+                        }
+                }
+                break;
+        case IPPROTO_IPIP:
+                goto again;
+        default:
+                break;
+        }
+
         ports.v32 = 0;
         poff = proto_ports_offset(ip_proto);
         if (poff >= 0) {
-                nhoff += ihl * 4 + poff;
+                nhoff += poff;
                 if (pskb_may_pull(skb, nhoff + 4)) {
                         ports.v32 = * (__force u32 *) (skb->data + nhoff);
                         if (ports.v16[1] < ports.v16[0])
                                 swap(ports.v16[0], ports.v16[1]);
+                        skb->l4_rxhash = 1;
                 }
         }
 
@@ -2592,7 +2708,7 @@ __u32 __skb_get_rxhash(struct sk_buff *skb)
                 hash = 1;
 
 done:
-        return hash;
+        skb->rxhash = hash;
 }
 EXPORT_SYMBOL(__skb_get_rxhash);
 
@@ -2606,10 +2722,7 @@ static struct rps_dev_flow *
 set_rps_cpu(struct net_device *dev, struct sk_buff *skb,
             struct rps_dev_flow *rflow, u16 next_cpu)
 {
-        u16 tcpu;
-
-        tcpu = rflow->cpu = next_cpu;
-        if (tcpu != RPS_NO_CPU) {
+        if (next_cpu != RPS_NO_CPU) {
 #ifdef CONFIG_RFS_ACCEL
                 struct netdev_rx_queue *rxqueue;
                 struct rps_dev_flow_table *flow_table;
@@ -2637,16 +2750,16 @@ set_rps_cpu(struct net_device *dev, struct sk_buff *skb,
                         goto out;
                 old_rflow = rflow;
                 rflow = &flow_table->flows[flow_id];
-                rflow->cpu = next_cpu;
                 rflow->filter = rc;
                 if (old_rflow->filter == rflow->filter)
                         old_rflow->filter = RPS_NO_FILTER;
         out:
 #endif
                 rflow->last_qtail =
-                        per_cpu(softnet_data, tcpu).input_queue_head;
+                        per_cpu(softnet_data, next_cpu).input_queue_head;
         }
 
+        rflow->cpu = next_cpu;
         return rflow;
 }
 
@@ -2681,13 +2794,13 @@ static int get_rps_cpu(struct net_device *dev, struct sk_buff *skb,
         map = rcu_dereference(rxqueue->rps_map);
         if (map) {
                 if (map->len == 1 &&
-                    !rcu_dereference_raw(rxqueue->rps_flow_table)) {
+                    !rcu_access_pointer(rxqueue->rps_flow_table)) {
                         tcpu = map->cpus[0];
                         if (cpu_online(tcpu))
                                 cpu = tcpu;
                         goto done;
                 }
-        } else if (!rcu_dereference_raw(rxqueue->rps_flow_table)) {
+        } else if (!rcu_access_pointer(rxqueue->rps_flow_table)) {
                 goto done;
         }
 
@@ -3102,8 +3215,8 @@ void netdev_rx_handler_unregister(struct net_device *dev)
 {
 
         ASSERT_RTNL();
-        rcu_assign_pointer(dev->rx_handler, NULL);
-        rcu_assign_pointer(dev->rx_handler_data, NULL);
+        RCU_INIT_POINTER(dev->rx_handler, NULL);
+        RCU_INIT_POINTER(dev->rx_handler_data, NULL);
 }
 EXPORT_SYMBOL_GPL(netdev_rx_handler_unregister);
 
@@ -3171,6 +3284,17 @@ ncls:
 #endif
 
         rx_handler = rcu_dereference(skb->dev->rx_handler);
+        if (vlan_tx_tag_present(skb)) {
+                if (pt_prev) {
+                        ret = deliver_skb(skb, pt_prev, orig_dev);
+                        pt_prev = NULL;
+                }
+                if (vlan_do_receive(&skb, !rx_handler))
+                        goto another_round;
+                else if (unlikely(!skb))
+                        goto out;
+        }
+
         if (rx_handler) {
                 if (pt_prev) {
                         ret = deliver_skb(skb, pt_prev, orig_dev);
@@ -3190,18 +3314,6 @@ ncls:
                 }
         }
 
-        if (vlan_tx_tag_present(skb)) {
-                if (pt_prev) {
-                        ret = deliver_skb(skb, pt_prev, orig_dev);
-                        pt_prev = NULL;
-                }
-                if (vlan_do_receive(&skb)) {
-                        ret = __netif_receive_skb(skb);
-                        goto out;
-                } else if (unlikely(!skb))
-                        goto out;
-        }
-
         /* deliver only exact match when indicated */
         null_or_dev = deliver_exact ? skb->dev : NULL;
 
@@ -3429,10 +3541,10 @@ pull:
                 skb->data_len -= grow;
 
                 skb_shinfo(skb)->frags[0].page_offset += grow;
-                skb_shinfo(skb)->frags[0].size -= grow;
+                skb_frag_size_sub(&skb_shinfo(skb)->frags[0], grow);
 
-                if (unlikely(!skb_shinfo(skb)->frags[0].size)) {
-                        put_page(skb_shinfo(skb)->frags[0].page);
+                if (unlikely(!skb_frag_size(&skb_shinfo(skb)->frags[0]))) {
+                        skb_frag_unref(skb, 0);
                         memmove(skb_shinfo(skb)->frags,
                                 skb_shinfo(skb)->frags + 1,
                                 --skb_shinfo(skb)->nr_frags * sizeof(skb_frag_t));
@@ -3496,11 +3608,10 @@ void skb_gro_reset_offset(struct sk_buff *skb)
         NAPI_GRO_CB(skb)->frag0_len = 0;
 
         if (skb->mac_header == skb->tail &&
-            !PageHighMem(skb_shinfo(skb)->frags[0].page)) {
+            !PageHighMem(skb_frag_page(&skb_shinfo(skb)->frags[0]))) {
                 NAPI_GRO_CB(skb)->frag0 =
-                        page_address(skb_shinfo(skb)->frags[0].page) +
-                        skb_shinfo(skb)->frags[0].page_offset;
-                NAPI_GRO_CB(skb)->frag0_len = skb_shinfo(skb)->frags[0].size;
+                        skb_frag_address(&skb_shinfo(skb)->frags[0]);
+                NAPI_GRO_CB(skb)->frag0_len = skb_frag_size(&skb_shinfo(skb)->frags[0]);
         }
 }
 EXPORT_SYMBOL(skb_gro_reset_offset);
@@ -3982,6 +4093,60 @@ static int dev_ifconf(struct net *net, char __user *arg)
 }
 
 #ifdef CONFIG_PROC_FS
+
+#define BUCKET_SPACE (32 - NETDEV_HASHBITS)
+
+struct dev_iter_state {
+        struct seq_net_private p;
+        unsigned int pos; /* bucket << BUCKET_SPACE + offset */
+};
+
+#define get_bucket(x) ((x) >> BUCKET_SPACE)
+#define get_offset(x) ((x) & ((1 << BUCKET_SPACE) - 1))
+#define set_bucket_offset(b, o) ((b) << BUCKET_SPACE | (o))
+
+static inline struct net_device *dev_from_same_bucket(struct seq_file *seq)
+{
+        struct dev_iter_state *state = seq->private;
+        struct net *net = seq_file_net(seq);
+        struct net_device *dev;
+        struct hlist_node *p;
+        struct hlist_head *h;
+        unsigned int count, bucket, offset;
+
+        bucket = get_bucket(state->pos);
+        offset = get_offset(state->pos);
+        h = &net->dev_name_head[bucket];
+        count = 0;
+        hlist_for_each_entry_rcu(dev, p, h, name_hlist) {
+                if (count++ == offset) {
+                        state->pos = set_bucket_offset(bucket, count);
+                        return dev;
+                }
+        }
+
+        return NULL;
+}
+
+static inline struct net_device *dev_from_new_bucket(struct seq_file *seq)
+{
+        struct dev_iter_state *state = seq->private;
+        struct net_device *dev;
+        unsigned int bucket;
+
+        bucket = get_bucket(state->pos);
+        do {
+                dev = dev_from_same_bucket(seq);
+                if (dev)
+                        return dev;
+
+                bucket++;
+                state->pos = set_bucket_offset(bucket, 0);
+        } while (bucket < NETDEV_HASHENTRIES);
+
+        return NULL;
+}
+
 /*
  *      This is invoked by the /proc filesystem handler to display a device
  *      in detail.
@@ -3989,33 +4154,33 @@ static int dev_ifconf(struct net *net, char __user *arg)
 void *dev_seq_start(struct seq_file *seq, loff_t *pos)
         __acquires(RCU)
 {
-        struct net *net = seq_file_net(seq);
-        loff_t off;
-        struct net_device *dev;
+        struct dev_iter_state *state = seq->private;
 
         rcu_read_lock();
         if (!*pos)
                 return SEQ_START_TOKEN;
 
-        off = 1;
-        for_each_netdev_rcu(net, dev)
-                if (off++ == *pos)
-                        return dev;
+        /* check for end of the hash */
+        if (state->pos == 0 && *pos > 1)
+                return NULL;
 
-        return NULL;
+        return dev_from_new_bucket(seq);
 }
 
 void *dev_seq_next(struct seq_file *seq, void *v, loff_t *pos)
 {
-        struct net_device *dev = v;
+        struct net_device *dev;
+
+        ++*pos;
 
         if (v == SEQ_START_TOKEN)
-                dev = first_net_device_rcu(seq_file_net(seq));
-        else
-                dev = next_net_device_rcu(dev);
+                return dev_from_new_bucket(seq);
 
-        ++*pos;
-        return dev;
+        dev = dev_from_same_bucket(seq);
+        if (dev)
+                return dev;
+
+        return dev_from_new_bucket(seq);
 }
 
 void dev_seq_stop(struct seq_file *seq, void *v)
@@ -4114,7 +4279,7 @@ static const struct seq_operations dev_seq_ops = {
 static int dev_seq_open(struct inode *inode, struct file *file)
 {
         return seq_open_net(inode, file, &dev_seq_ops,
-                            sizeof(struct seq_net_private));
+                            sizeof(struct dev_iter_state));
 }
 
 static const struct file_operations dev_seq_fops = {
@@ -4497,9 +4662,7 @@ void __dev_set_rx_mode(struct net_device *dev)
         if (!netif_device_present(dev))
                 return;
 
-        if (ops->ndo_set_rx_mode)
-                ops->ndo_set_rx_mode(dev);
-        else {
+        if (!(dev->priv_flags & IFF_UNICAST_FLT)) {
                 /* Unicast addresses changes may only happen under the rtnl,
                  * therefore calling __dev_set_promiscuity here is safe.
                  */
@@ -4510,10 +4673,10 @@ void __dev_set_rx_mode(struct net_device *dev)
                         __dev_set_promiscuity(dev, -1);
                         dev->uc_promisc = false;
                 }
-
-                if (ops->ndo_set_multicast_list)
-                        ops->ndo_set_multicast_list(dev);
         }
+
+        if (ops->ndo_set_rx_mode)
+                ops->ndo_set_rx_mode(dev);
 }
 
 void dev_set_rx_mode(struct net_device *dev)
@@ -4524,30 +4687,6 @@ void dev_set_rx_mode(struct net_device *dev)
 }
 
 /**
- *      dev_ethtool_get_settings - call device's ethtool_ops::get_settings()
- *      @dev: device
- *      @cmd: memory area for ethtool_ops::get_settings() result
- *
- *      The cmd arg is initialized properly (cleared and
- *      ethtool_cmd::cmd field set to ETHTOOL_GSET).
- *
- *      Return device's ethtool_ops::get_settings() result value or
- *      -EOPNOTSUPP when device doesn't expose
- *      ethtool_ops::get_settings() operation.
- */
-int dev_ethtool_get_settings(struct net_device *dev,
-                             struct ethtool_cmd *cmd)
-{
-        if (!dev->ethtool_ops || !dev->ethtool_ops->get_settings)
-                return -EOPNOTSUPP;
-
-        memset(cmd, 0, sizeof(struct ethtool_cmd));
-        cmd->cmd = ETHTOOL_GSET;
-        return dev->ethtool_ops->get_settings(dev, cmd);
-}
-EXPORT_SYMBOL(dev_ethtool_get_settings);
-
-/**
  *      dev_get_flags - get flags reported to userspace
  *      @dev: device
  *
@@ -4863,7 +5002,7 @@ static int dev_ifsioc(struct net *net, struct ifreq *ifr, unsigned int cmd)
                 return -EOPNOTSUPP;
 
         case SIOCADDMULTI:
-                if ((!ops->ndo_set_multicast_list && !ops->ndo_set_rx_mode) ||
+                if (!ops->ndo_set_rx_mode ||
                     ifr->ifr_hwaddr.sa_family != AF_UNSPEC)
                         return -EINVAL;
                 if (!netif_device_present(dev))
@@ -4871,7 +5010,7 @@ static int dev_ifsioc(struct net *net, struct ifreq *ifr, unsigned int cmd)
                 return dev_mc_add_global(dev, ifr->ifr_hwaddr.sa_data);
 
         case SIOCDELMULTI:
-                if ((!ops->ndo_set_multicast_list && !ops->ndo_set_rx_mode) ||
+                if (!ops->ndo_set_rx_mode ||
                     ifr->ifr_hwaddr.sa_family != AF_UNSPEC)
                         return -EINVAL;
                 if (!netif_device_present(dev))
@@ -4888,6 +5027,12 @@ static int dev_ifsioc(struct net *net, struct ifreq *ifr, unsigned int cmd)
                 ifr->ifr_newname[IFNAMSIZ-1] = '\0';
                 return dev_change_name(dev, ifr->ifr_newname);
 
+        case SIOCSHWTSTAMP:
+                err = net_hwtstamp_validate(ifr);
+                if (err)
+                        return err;
+                /* fall through */
+
         /*
          *      Unknown or private ioctl
          */
@@ -5202,7 +5347,7 @@ static void rollback_registered_many(struct list_head *head)
         dev = list_first_entry(head, struct net_device, unreg_list);
         call_netdevice_notifiers(NETDEV_UNREGISTER_BATCH, dev);
 
-        rcu_barrier();
+        synchronize_net();
 
         list_for_each_entry(dev, head, unreg_list)
                 dev_put(dev);
@@ -5715,6 +5860,12 @@ void netdev_run_todo(void)
 
         __rtnl_unlock();
 
+        /* Wait for rcu callbacks to finish before attempting to drain
+         * the device list.  This usually avoids a 250ms wait.
+         */
+        if (!list_empty(&list))
+                rcu_barrier();
+
         while (!list_empty(&list)) {
                 struct net_device *dev
                         = list_first_entry(&list, struct net_device, todo_list);
@@ -5735,8 +5886,8 @@ void netdev_run_todo(void)
 
                 /* paranoia */
                 BUG_ON(netdev_refcnt_read(dev));
-                WARN_ON(rcu_dereference_raw(dev->ip_ptr));
-                WARN_ON(rcu_dereference_raw(dev->ip6_ptr));
+                WARN_ON(rcu_access_pointer(dev->ip_ptr));
+                WARN_ON(rcu_access_pointer(dev->ip6_ptr));
                 WARN_ON(dev->dn_ptr);
 
                 if (dev->destructor)
@@ -5940,7 +6091,7 @@ void free_netdev(struct net_device *dev)
         kfree(dev->_rx);
 #endif
 
-        kfree(rcu_dereference_raw(dev->ingress_queue));
+        kfree(rcu_dereference_protected(dev->ingress_queue, 1));
 
         /* Flush device addresses */
         dev_addr_flush(dev);
@@ -6115,6 +6266,7 @@ int dev_change_net_namespace(struct net_device *dev, struct net *net, const char
         */
         call_netdevice_notifiers(NETDEV_UNREGISTER, dev);
         call_netdevice_notifiers(NETDEV_UNREGISTER_BATCH, dev);
+        rtmsg_ifinfo(RTM_DELLINK, dev, ~0U);
 
         /*
          *      Flush the unicast and multicast chains
@@ -6298,7 +6450,7 @@ const char *netdev_drivername(const struct net_device *dev)
         return empty;
 }
 
-static int __netdev_printk(const char *level, const struct net_device *dev,
+int __netdev_printk(const char *level, const struct net_device *dev,
                            struct va_format *vaf)
 {
         int r;
@@ -6313,6 +6465,7 @@ static int __netdev_printk(const char *level, const struct net_device *dev,
 
         return r;
 }
+EXPORT_SYMBOL(__netdev_printk);
 
 int netdev_printk(const char *level, const struct net_device *dev,
                   const char *format, ...)
diff --git a/net/core/dev_addr_lists.c b/net/core/dev_addr_lists.c
index e2e66939ed00..277faef9148d 100644
--- a/net/core/dev_addr_lists.c
+++ b/net/core/dev_addr_lists.c
@@ -13,6 +13,7 @@
 
 #include <linux/netdevice.h>
 #include <linux/rtnetlink.h>
+#include <linux/export.h>
 #include <linux/list.h>
 #include <linux/proc_fs.h>
 
@@ -591,8 +592,8 @@ EXPORT_SYMBOL(dev_mc_del_global);
  *      addresses that have no users left. The source device must be
  *      locked by netif_tx_lock_bh.
  *
- *      This function is intended to be called from the dev->set_multicast_list
- *      or dev->set_rx_mode function of layered software devices.
+ *      This function is intended to be called from the ndo_set_rx_mode
+ *      function of layered software devices.
  */
 int dev_mc_sync(struct net_device *to, struct net_device *from)
 {
diff --git a/net/core/dst.c b/net/core/dst.c
index 14b33baf0733..d5e2c4c09107 100644
--- a/net/core/dst.c
+++ b/net/core/dst.c
@@ -171,7 +171,7 @@ void *dst_alloc(struct dst_ops *ops, struct net_device *dev,
         dst_init_metrics(dst, dst_default_metrics, true);
         dst->expires = 0UL;
         dst->path = dst;
-        dst->_neighbour = NULL;
+        RCU_INIT_POINTER(dst->_neighbour, NULL);
 #ifdef CONFIG_XFRM
         dst->xfrm = NULL;
 #endif
@@ -229,11 +229,11 @@ struct dst_entry *dst_destroy(struct dst_entry * dst)
         smp_rmb();
 
 again:
-        neigh = dst->_neighbour;
+        neigh = rcu_dereference_protected(dst->_neighbour, 1);
         child = dst->child;
 
         if (neigh) {
-                dst->_neighbour = NULL;
+                RCU_INIT_POINTER(dst->_neighbour, NULL);
                 neigh_release(neigh);
         }
 
@@ -360,14 +360,19 @@ static void dst_ifdown(struct dst_entry *dst, struct net_device *dev,
         if (!unregister) {
                 dst->input = dst->output = dst_discard;
         } else {
+                struct neighbour *neigh;
+
                 dst->dev = dev_net(dst->dev)->loopback_dev;
                 dev_hold(dst->dev);
                 dev_put(dev);
-                if (dst->_neighbour && dst->_neighbour->dev == dev) {
-                        dst->_neighbour->dev = dst->dev;
+                rcu_read_lock();
+                neigh = dst_get_neighbour(dst);
+                if (neigh && neigh->dev == dev) {
+                        neigh->dev = dst->dev;
                         dev_hold(dst->dev);
                         dev_put(dev);
                 }
+                rcu_read_unlock();
         }
 }
 
diff --git a/net/core/ethtool.c b/net/core/ethtool.c
index 6cdba5fc2bed..f44481707124 100644
--- a/net/core/ethtool.c
+++ b/net/core/ethtool.c
@@ -569,15 +569,25 @@ int __ethtool_set_flags(struct net_device *dev, u32 data)
         return 0;
 }
 
-static int ethtool_get_settings(struct net_device *dev, void __user *useraddr)
+int __ethtool_get_settings(struct net_device *dev, struct ethtool_cmd *cmd)
 {
-        struct ethtool_cmd cmd = { .cmd = ETHTOOL_GSET };
-        int err;
+        ASSERT_RTNL();
 
-        if (!dev->ethtool_ops->get_settings)
+        if (!dev->ethtool_ops || !dev->ethtool_ops->get_settings)
                 return -EOPNOTSUPP;
 
-        err = dev->ethtool_ops->get_settings(dev, &cmd);
+        memset(cmd, 0, sizeof(struct ethtool_cmd));
+        cmd->cmd = ETHTOOL_GSET;
+        return dev->ethtool_ops->get_settings(dev, cmd);
+}
+EXPORT_SYMBOL(__ethtool_get_settings);
+
+static int ethtool_get_settings(struct net_device *dev, void __user *useraddr)
+{
+        int err;
+        struct ethtool_cmd cmd;
+
+        err = __ethtool_get_settings(dev, &cmd);
         if (err < 0)
                 return err;
 
diff --git a/net/core/fib_rules.c b/net/core/fib_rules.c
index 27071ee2a4e1..c02e63c908da 100644
--- a/net/core/fib_rules.c
+++ b/net/core/fib_rules.c
@@ -12,6 +12,7 @@
 #include <linux/kernel.h>
 #include <linux/slab.h>
 #include <linux/list.h>
+#include <linux/module.h>
 #include <net/net_namespace.h>
 #include <net/sock.h>
 #include <net/fib_rules.h>
@@ -490,7 +491,7 @@ static int fib_nl_delrule(struct sk_buff *skb, struct nlmsghdr* nlh, void *arg)
                 if (ops->nr_goto_rules > 0) {
                         list_for_each_entry(tmp, &ops->rules_list, list) {
                                 if (rtnl_dereference(tmp->ctarget) == rule) {
-                                        rcu_assign_pointer(tmp->ctarget, NULL);
+                                        RCU_INIT_POINTER(tmp->ctarget, NULL);
                                         ops->unresolved_rules++;
                                 }
                         }
@@ -548,7 +549,7 @@ static int fib_nl_fill_rule(struct sk_buff *skb, struct fib_rule *rule,
         frh->flags = rule->flags;
 
         if (rule->action == FR_ACT_GOTO &&
-            rcu_dereference_raw(rule->ctarget) == NULL)
+            rcu_access_pointer(rule->ctarget) == NULL)
                 frh->flags |= FIB_RULE_UNRESOLVED;
 
         if (rule->iifname[0]) {
diff --git a/net/core/filter.c b/net/core/filter.c
index 36f975fa87cb..5dea45279215 100644
--- a/net/core/filter.c
+++ b/net/core/filter.c
@@ -436,7 +436,7 @@ error:
  *
  * Returns 0 if the rule set is legal or -EINVAL if not.
  */
-int sk_chk_filter(struct sock_filter *filter, int flen)
+int sk_chk_filter(struct sock_filter *filter, unsigned int flen)
 {
         /*
          * Valid instructions are initialized to non-0.
@@ -645,7 +645,7 @@ int sk_detach_filter(struct sock *sk)
         filter = rcu_dereference_protected(sk->sk_filter,
                                            sock_owned_by_user(sk));
         if (filter) {
-                rcu_assign_pointer(sk->sk_filter, NULL);
+                RCU_INIT_POINTER(sk->sk_filter, NULL);
                 sk_filter_uncharge(sk, filter);
                 ret = 0;
         }
diff --git a/net/core/flow.c b/net/core/flow.c
index 555a456efb07..8ae42de9c79e 100644
--- a/net/core/flow.c
+++ b/net/core/flow.c
@@ -413,7 +413,7 @@ static int __init flow_cache_init(struct flow_cache *fc)
 
         for_each_online_cpu(i) {
                 if (flow_cache_cpu_prepare(fc, i))
-                        return -ENOMEM;
+                        goto err;
         }
         fc->hotcpu_notifier = (struct notifier_block){
                 .notifier_call = flow_cache_cpu,
@@ -426,6 +426,18 @@ static int __init flow_cache_init(struct flow_cache *fc)
         add_timer(&fc->rnd_timer);
 
         return 0;
+
+err:
+        for_each_possible_cpu(i) {
+                struct flow_cache_percpu *fcp = per_cpu_ptr(fc->percpu, i);
+                kfree(fcp->hash_table);
+                fcp->hash_table = NULL;
+        }
+
+        free_percpu(fc->percpu);
+        fc->percpu = NULL;
+
+        return -ENOMEM;
 }
 
 static int __init flow_cache_init_global(void)
diff --git a/net/core/kmap_skb.h b/net/core/kmap_skb.h
index 283c2b993fb8..81e1ed7c8383 100644
--- a/net/core/kmap_skb.h
+++ b/net/core/kmap_skb.h
@@ -7,7 +7,7 @@ static inline void *kmap_skb_frag(const skb_frag_t *frag)
 
         local_bh_disable();
 #endif
-        return kmap_atomic(frag->page, KM_SKB_DATA_SOFTIRQ);
+        return kmap_atomic(skb_frag_page(frag), KM_SKB_DATA_SOFTIRQ);
 }
 
 static inline void kunmap_skb_frag(void *vaddr)
diff --git a/net/core/link_watch.c b/net/core/link_watch.c
index 357bd4ee4baa..c3519c6d1b16 100644
--- a/net/core/link_watch.c
+++ b/net/core/link_watch.c
@@ -78,8 +78,13 @@ static void rfc2863_policy(struct net_device *dev)
 
 static bool linkwatch_urgent_event(struct net_device *dev)
 {
-        return netif_running(dev) && netif_carrier_ok(dev) &&
-                qdisc_tx_changing(dev);
+        if (!netif_running(dev))
+                return false;
+
+        if (dev->ifindex != dev->iflink)
+                return true;
+
+        return netif_carrier_ok(dev) && qdisc_tx_changing(dev);
 }
 
 
diff --git a/net/core/neighbour.c b/net/core/neighbour.c
index 1334d7e56f02..039d51e6c284 100644
--- a/net/core/neighbour.c
+++ b/net/core/neighbour.c
@@ -844,6 +844,19 @@ static void neigh_invalidate(struct neighbour *neigh)
         skb_queue_purge(&neigh->arp_queue);
 }
 
+static void neigh_probe(struct neighbour *neigh)
+        __releases(neigh->lock)
+{
+        struct sk_buff *skb = skb_peek(&neigh->arp_queue);
+        /* keep skb alive even if arp_queue overflows */
+        if (skb)
+                skb = skb_copy(skb, GFP_ATOMIC);
+        write_unlock(&neigh->lock);
+        neigh->ops->solicit(neigh, skb);
+        atomic_inc(&neigh->probes);
+        kfree_skb(skb);
+}
+
 /* Called when a timer expires for a neighbour entry. */
 
 static void neigh_timer_handler(unsigned long arg)
@@ -859,12 +872,8 @@ static void neigh_timer_handler(unsigned long arg)
         now = jiffies;
         next = now + HZ;
 
-        if (!(state & NUD_IN_TIMER)) {
-#ifndef CONFIG_SMP
-                printk(KERN_WARNING "neigh: timer & !nud_in_timer\n");
-#endif
+        if (!(state & NUD_IN_TIMER))
                 goto out;
-        }
 
         if (state & NUD_REACHABLE) {
                 if (time_before_eq(now,
@@ -920,14 +929,7 @@ static void neigh_timer_handler(unsigned long arg)
                         neigh_hold(neigh);
         }
         if (neigh->nud_state & (NUD_INCOMPLETE | NUD_PROBE)) {
-                struct sk_buff *skb = skb_peek(&neigh->arp_queue);
-                /* keep skb alive even if arp_queue overflows */
-                if (skb)
-                        skb = skb_copy(skb, GFP_ATOMIC);
-                write_unlock(&neigh->lock);
-                neigh->ops->solicit(neigh, skb);
-                atomic_inc(&neigh->probes);
-                kfree_skb(skb);
+                neigh_probe(neigh);
         } else {
 out:
                 write_unlock(&neigh->lock);
@@ -942,7 +944,7 @@ out:
 int __neigh_event_send(struct neighbour *neigh, struct sk_buff *skb)
 {
         int rc;
-        unsigned long now;
+        bool immediate_probe = false;
 
         write_lock_bh(&neigh->lock);
 
@@ -950,14 +952,16 @@ int __neigh_event_send(struct neighbour *neigh, struct sk_buff *skb)
         if (neigh->nud_state & (NUD_CONNECTED | NUD_DELAY | NUD_PROBE))
                 goto out_unlock_bh;
 
-        now = jiffies;
-
         if (!(neigh->nud_state & (NUD_STALE | NUD_INCOMPLETE))) {
                 if (neigh->parms->mcast_probes + neigh->parms->app_probes) {
+                        unsigned long next, now = jiffies;
+
                         atomic_set(&neigh->probes, neigh->parms->ucast_probes);
                         neigh->nud_state     = NUD_INCOMPLETE;
-                        neigh->updated = jiffies;
-                        neigh_add_timer(neigh, now + 1);
+                        neigh->updated = now;
+                        next = now + max(neigh->parms->retrans_time, HZ/2);
+                        neigh_add_timer(neigh, next);
+                        immediate_probe = true;
                 } else {
                         neigh->nud_state = NUD_FAILED;
                         neigh->updated = jiffies;
@@ -989,7 +993,11 @@ int __neigh_event_send(struct neighbour *neigh, struct sk_buff *skb)
                 rc = 1;
         }
 out_unlock_bh:
-        write_unlock_bh(&neigh->lock);
+        if (immediate_probe)
+                neigh_probe(neigh);
+        else
+                write_unlock(&neigh->lock);
+        local_bh_enable();
         return rc;
 }
 EXPORT_SYMBOL(__neigh_event_send);
@@ -1156,10 +1164,14 @@ int neigh_update(struct neighbour *neigh, const u8 *lladdr, u8 new,
                         struct dst_entry *dst = skb_dst(skb);
                         struct neighbour *n2, *n1 = neigh;
                         write_unlock_bh(&neigh->lock);
+
+                        rcu_read_lock();
                         /* On shaper/eql skb->dst->neighbour != neigh :( */
                         if (dst && (n2 = dst_get_neighbour(dst)) != NULL)
                                 n1 = n2;
                         n1->output(n1, skb);
+                        rcu_read_unlock();
+
                         write_lock_bh(&neigh->lock);
                 }
                 skb_queue_purge(&neigh->arp_queue);
diff --git a/net/core/net-sysfs.c b/net/core/net-sysfs.c
index 1683e5db2f27..c71c434a4c05 100644
--- a/net/core/net-sysfs.c
+++ b/net/core/net-sysfs.c
@@ -20,6 +20,7 @@
 #include <linux/rtnetlink.h>
 #include <linux/wireless.h>
 #include <linux/vmalloc.h>
+#include <linux/export.h>
 #include <net/wext.h>
 
 #include "net-sysfs.h"
@@ -147,7 +148,7 @@ static ssize_t show_speed(struct device *dev,
 
         if (netif_running(netdev)) {
                 struct ethtool_cmd cmd;
-                if (!dev_ethtool_get_settings(netdev, &cmd))
+                if (!__ethtool_get_settings(netdev, &cmd))
                         ret = sprintf(buf, fmt_udec, ethtool_cmd_speed(&cmd));
         }
         rtnl_unlock();
@@ -165,7 +166,7 @@ static ssize_t show_duplex(struct device *dev,
 
         if (netif_running(netdev)) {
                 struct ethtool_cmd cmd;
-                if (!dev_ethtool_get_settings(netdev, &cmd))
+                if (!__ethtool_get_settings(netdev, &cmd))
                         ret = sprintf(buf, "%s\n",
                                       cmd.duplex ? "full" : "half");
         }
@@ -712,13 +713,13 @@ static void rx_queue_release(struct kobject *kobj)
         struct rps_dev_flow_table *flow_table;
 
 
-        map = rcu_dereference_raw(queue->rps_map);
+        map = rcu_dereference_protected(queue->rps_map, 1);
         if (map) {
                 RCU_INIT_POINTER(queue->rps_map, NULL);
                 kfree_rcu(map, rcu);
         }
 
-        flow_table = rcu_dereference_raw(queue->rps_flow_table);
+        flow_table = rcu_dereference_protected(queue->rps_flow_table, 1);
         if (flow_table) {
                 RCU_INIT_POINTER(queue->rps_flow_table, NULL);
                 call_rcu(&flow_table->rcu, rps_dev_flow_table_release);
@@ -987,10 +988,10 @@ static ssize_t store_xps_map(struct netdev_queue *queue,
         }
 
         if (nonempty)
-                rcu_assign_pointer(dev->xps_maps, new_dev_maps);
+                RCU_INIT_POINTER(dev->xps_maps, new_dev_maps);
         else {
                 kfree(new_dev_maps);
-                rcu_assign_pointer(dev->xps_maps, NULL);
+                RCU_INIT_POINTER(dev->xps_maps, NULL);
         }
 
         if (dev_maps)
diff --git a/net/core/net-traces.c b/net/core/net-traces.c
index 52380b1d552a..ba3c0120786c 100644
--- a/net/core/net-traces.c
+++ b/net/core/net-traces.c
@@ -11,6 +11,7 @@
 #include <linux/inetdevice.h>
 #include <linux/inet.h>
 #include <linux/interrupt.h>
+#include <linux/export.h>
 #include <linux/netpoll.h>
 #include <linux/sched.h>
 #include <linux/delay.h>
diff --git a/net/core/net_namespace.c b/net/core/net_namespace.c
index 5bbdbf0d3664..aefcd7acbffa 100644
--- a/net/core/net_namespace.c
+++ b/net/core/net_namespace.c
@@ -10,6 +10,7 @@
 #include <linux/nsproxy.h>
 #include <linux/proc_fs.h>
 #include <linux/file.h>
+#include <linux/export.h>
 #include <net/net_namespace.h>
 #include <net/netns/generic.h>
 
diff --git a/net/core/netevent.c b/net/core/netevent.c
index 865f0ceb81fb..f17ccd291d39 100644
--- a/net/core/netevent.c
+++ b/net/core/netevent.c
@@ -15,6 +15,7 @@
 
 #include <linux/rtnetlink.h>
 #include <linux/notifier.h>
+#include <linux/export.h>
 #include <net/netevent.h>
 
 static ATOMIC_NOTIFIER_HEAD(netevent_notif_chain);
diff --git a/net/core/netpoll.c b/net/core/netpoll.c
index 52622517e0d8..cf64c1ffa4cd 100644
--- a/net/core/netpoll.c
+++ b/net/core/netpoll.c
@@ -23,6 +23,7 @@
 #include <linux/rcupdate.h>
 #include <linux/workqueue.h>
 #include <linux/slab.h>
+#include <linux/export.h>
 #include <net/tcp.h>
 #include <net/udp.h>
 #include <asm/unaligned.h>
@@ -762,7 +763,7 @@ int __netpoll_setup(struct netpoll *np)
         }
 
         /* last thing to do is link it to the net device structure */
-        rcu_assign_pointer(ndev->npinfo, npinfo);
+        RCU_INIT_POINTER(ndev->npinfo, npinfo);
 
         return 0;
 
@@ -903,7 +904,7 @@ void __netpoll_cleanup(struct netpoll *np)
                 if (ops->ndo_netpoll_cleanup)
                         ops->ndo_netpoll_cleanup(np->dev);
 
-                rcu_assign_pointer(np->dev->npinfo, NULL);
+                RCU_INIT_POINTER(np->dev->npinfo, NULL);
 
                 /* avoid racing with NAPI reading npinfo */
                 synchronize_rcu_bh();
diff --git a/net/core/pktgen.c b/net/core/pktgen.c
index e35a6fbb8110..0001c243b35c 100644
--- a/net/core/pktgen.c
+++ b/net/core/pktgen.c
@@ -2145,9 +2145,12 @@ static void spin(struct pktgen_dev *pkt_dev, ktime_t spin_until)
         }
 
         start_time = ktime_now();
-        if (remaining < 100000)
-                ndelay(remaining);      /* really small just spin */
-        else {
+        if (remaining < 100000) {
+                /* for small delays (<100us), just loop until limit is reached */
+                do {
+                        end_time = ktime_now();
+                } while (ktime_lt(end_time, spin_until));
+        } else {
                 /* see do_nanosleep */
                 hrtimer_init_sleeper(&t, current);
                 do {
@@ -2162,8 +2165,8 @@ static void spin(struct pktgen_dev *pkt_dev, ktime_t spin_until)
                         hrtimer_cancel(&t.timer);
                 } while (t.task && pkt_dev->running && !signal_pending(current));
                 __set_current_state(TASK_RUNNING);
+                end_time = ktime_now();
         }
-        end_time = ktime_now();
 
         pkt_dev->idle_acc += ktime_to_ns(ktime_sub(end_time, start_time));
         pkt_dev->next_tx = ktime_add_ns(spin_until, pkt_dev->delay);
@@ -2602,18 +2605,18 @@ static void pktgen_finalize_skb(struct pktgen_dev *pkt_dev, struct sk_buff *skb,
                                 if (!pkt_dev->page)
                                         break;
                         }
-                        skb_shinfo(skb)->frags[i].page = pkt_dev->page;
                         get_page(pkt_dev->page);
+                        skb_frag_set_page(skb, i, pkt_dev->page);
                         skb_shinfo(skb)->frags[i].page_offset = 0;
                         /*last fragment, fill rest of data*/
                         if (i == (frags - 1))
-                                skb_shinfo(skb)->frags[i].size =
-                                    (datalen < PAGE_SIZE ? datalen : PAGE_SIZE);
+                                skb_frag_size_set(&skb_shinfo(skb)->frags[i],
+                                    (datalen < PAGE_SIZE ? datalen : PAGE_SIZE));
                         else
-                                skb_shinfo(skb)->frags[i].size = frag_len;
-                        datalen -= skb_shinfo(skb)->frags[i].size;
-                        skb->len += skb_shinfo(skb)->frags[i].size;
-                        skb->data_len += skb_shinfo(skb)->frags[i].size;
+                                skb_frag_size_set(&skb_shinfo(skb)->frags[i], frag_len);
+                        datalen -= skb_frag_size(&skb_shinfo(skb)->frags[i]);
+                        skb->len += skb_frag_size(&skb_shinfo(skb)->frags[i]);
+                        skb->data_len += skb_frag_size(&skb_shinfo(skb)->frags[i]);
                         i++;
                         skb_shinfo(skb)->nr_frags = i;
                 }
diff --git a/net/core/rtnetlink.c b/net/core/rtnetlink.c
index 99d9e953fe39..9083e82bdae5 100644
--- a/net/core/rtnetlink.c
+++ b/net/core/rtnetlink.c
@@ -731,7 +731,8 @@ static inline int rtnl_vfinfo_size(const struct net_device *dev)
                 size += num_vfs *
                         (nla_total_size(sizeof(struct ifla_vf_mac)) +
                          nla_total_size(sizeof(struct ifla_vf_vlan)) +
-                         nla_total_size(sizeof(struct ifla_vf_tx_rate)));
+                         nla_total_size(sizeof(struct ifla_vf_tx_rate)) +
+                         nla_total_size(sizeof(struct ifla_vf_spoofchk)));
                 return size;
         } else
                 return 0;
@@ -954,13 +955,27 @@ static int rtnl_fill_ifinfo(struct sk_buff *skb, struct net_device *dev,
                         struct ifla_vf_mac vf_mac;
                         struct ifla_vf_vlan vf_vlan;
                         struct ifla_vf_tx_rate vf_tx_rate;
+                        struct ifla_vf_spoofchk vf_spoofchk;
+
+                        /*
+                         * Not all SR-IOV capable drivers support the
+                         * spoofcheck query.  Preset to -1 so the user
+                         * space tool can detect that the driver didn't
+                         * report anything.
+                         */
+                        ivi.spoofchk = -1;
                         if (dev->netdev_ops->ndo_get_vf_config(dev, i, &ivi))
                                 break;
-                        vf_mac.vf = vf_vlan.vf = vf_tx_rate.vf = ivi.vf;
+                        vf_mac.vf =
+                                vf_vlan.vf =
+                                vf_tx_rate.vf =
+                                vf_spoofchk.vf = ivi.vf;
+
                         memcpy(vf_mac.mac, ivi.mac, sizeof(ivi.mac));
                         vf_vlan.vlan = ivi.vlan;
                         vf_vlan.qos = ivi.qos;
                         vf_tx_rate.rate = ivi.tx_rate;
+                        vf_spoofchk.setting = ivi.spoofchk;
                         vf = nla_nest_start(skb, IFLA_VF_INFO);
                         if (!vf) {
                                 nla_nest_cancel(skb, vfinfo);
@@ -968,7 +983,10 @@ static int rtnl_fill_ifinfo(struct sk_buff *skb, struct net_device *dev,
                         }
                         NLA_PUT(skb, IFLA_VF_MAC, sizeof(vf_mac), &vf_mac);
                         NLA_PUT(skb, IFLA_VF_VLAN, sizeof(vf_vlan), &vf_vlan);
-                        NLA_PUT(skb, IFLA_VF_TX_RATE, sizeof(vf_tx_rate), &vf_tx_rate);
+                        NLA_PUT(skb, IFLA_VF_TX_RATE, sizeof(vf_tx_rate),
+                                &vf_tx_rate);
+                        NLA_PUT(skb, IFLA_VF_SPOOFCHK, sizeof(vf_spoofchk),
+                                &vf_spoofchk);
                         nla_nest_end(skb, vf);
                 }
                 nla_nest_end(skb, vfinfo);
@@ -1202,6 +1220,15 @@ static int do_setvfinfo(struct net_device *dev, struct nlattr *attr)
                                                               ivt->rate);
                         break;
                 }
+                case IFLA_VF_SPOOFCHK: {
+                        struct ifla_vf_spoofchk *ivs;
+                        ivs = nla_data(vf);
+                        err = -EOPNOTSUPP;
+                        if (ops->ndo_set_vf_spoofchk)
+                                err = ops->ndo_set_vf_spoofchk(dev, ivs->vf,
+                                                               ivs->setting);
+                        break;
+                }
                 default:
                         err = -EINVAL;
                         break;
@@ -1604,7 +1631,6 @@ struct net_device *rtnl_create_link(struct net *src_net, struct net *net,
         dev_net_set(dev, net);
         dev->rtnl_link_ops = ops;
         dev->rtnl_link_state = RTNL_LINK_INITIALIZING;
-        dev->real_num_tx_queues = real_num_queues;
 
         if (tb[IFLA_MTU])
                 dev->mtu = nla_get_u32(tb[IFLA_MTU]);
diff --git a/net/core/scm.c b/net/core/scm.c
index 811b53fb330e..ff52ad0a5150 100644
--- a/net/core/scm.c
+++ b/net/core/scm.c
@@ -173,7 +173,7 @@ int __scm_send(struct socket *sock, struct msghdr *msg, struct scm_cookie *p)
                         if (err)
                                 goto error;
 
-                        if (pid_vnr(p->pid) != p->creds.pid) {
+                        if (!p->pid || pid_vnr(p->pid) != p->creds.pid) {
                                 struct pid *pid;
                                 err = -ESRCH;
                                 pid = find_get_pid(p->creds.pid);
@@ -183,8 +183,9 @@ int __scm_send(struct socket *sock, struct msghdr *msg, struct scm_cookie *p)
                                 p->pid = pid;
                         }
 
-                        if ((p->cred->euid != p->creds.uid) ||
-                                (p->cred->egid != p->creds.gid)) {
+                        if (!p->cred ||
+                            (p->cred->euid != p->creds.uid) ||
+                            (p->cred->egid != p->creds.gid)) {
                                 struct cred *cred;
                                 err = -ENOMEM;
                                 cred = prepare_creds();
@@ -193,7 +194,8 @@ int __scm_send(struct socket *sock, struct msghdr *msg, struct scm_cookie *p)
 
                                 cred->uid = cred->euid = p->creds.uid;
                                 cred->gid = cred->egid = p->creds.gid;
-                                put_cred(p->cred);
+                                if (p->cred)
+                                        put_cred(p->cred);
                                 p->cred = cred;
                         }
                         break;
diff --git a/net/core/secure_seq.c b/net/core/secure_seq.c
index 45329d7c9dd9..025233de25f9 100644
--- a/net/core/secure_seq.c
+++ b/net/core/secure_seq.c
@@ -35,7 +35,7 @@ static u32 seq_scale(u32 seq)
 }
 
 #if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
-__u32 secure_tcpv6_sequence_number(__be32 *saddr, __be32 *daddr,
+__u32 secure_tcpv6_sequence_number(const __be32 *saddr, const __be32 *daddr,
                                    __be16 sport, __be16 dport)
 {
         u32 secret[MD5_MESSAGE_BYTES / 4];
diff --git a/net/core/skbuff.c b/net/core/skbuff.c
index 387703f56fce..18a3cebb753d 100644
--- a/net/core/skbuff.c
+++ b/net/core/skbuff.c
@@ -184,11 +184,21 @@ struct sk_buff *__alloc_skb(unsigned int size, gfp_t gfp_mask,
                 goto out;
         prefetchw(skb);
 
+        /* We do our best to align skb_shared_info on a separate cache
+         * line. It usually works because kmalloc(X > SMP_CACHE_BYTES) gives
+         * aligned memory blocks, unless SLUB/SLAB debug is enabled.
+         * Both skb->head and skb_shared_info are cache line aligned.
+         */
         size = SKB_DATA_ALIGN(size);
-        data = kmalloc_node_track_caller(size + sizeof(struct skb_shared_info),
-                        gfp_mask, node);
+        size += SKB_DATA_ALIGN(sizeof(struct skb_shared_info));
+        data = kmalloc_node_track_caller(size, gfp_mask, node);
         if (!data)
                 goto nodata;
+        /* kmalloc(size) might give us more room than requested.
+         * Put skb_shared_info exactly at the end of allocated zone,
+         * to allow max possible filling before reallocation.
+         */
+        size = SKB_WITH_OVERHEAD(ksize(data));
         prefetchw(data + size);
 
         /*
@@ -197,7 +207,8 @@ struct sk_buff *__alloc_skb(unsigned int size, gfp_t gfp_mask,
          * the tail pointer in struct sk_buff!
          */
         memset(skb, 0, offsetof(struct sk_buff, tail));
-        skb->truesize = size + sizeof(struct sk_buff);
+        /* Account for allocated memory : skb + skb->head */
+        skb->truesize = SKB_TRUESIZE(size);
         atomic_set(&skb->users, 1);
         skb->head = data;
         skb->data = data;
@@ -326,7 +337,7 @@ static void skb_release_data(struct sk_buff *skb)
                 if (skb_shinfo(skb)->nr_frags) {
                         int i;
                         for (i = 0; i < skb_shinfo(skb)->nr_frags; i++)
-                                put_page(skb_shinfo(skb)->frags[i].page);
+                                skb_frag_unref(skb, i);
                 }
 
                 /*
@@ -475,6 +486,30 @@ void consume_skb(struct sk_buff *skb)
 EXPORT_SYMBOL(consume_skb);
 
 /**
+ *      skb_recycle - clean up an skb for reuse
+ *      @skb: buffer
+ *
+ *      Recycles the skb to be reused as a receive buffer. This
+ *      function does any necessary reference count dropping, and
+ *      cleans up the skbuff as if it just came from __alloc_skb().
+ */
+void skb_recycle(struct sk_buff *skb)
+{
+        struct skb_shared_info *shinfo;
+
+        skb_release_head_state(skb);
+
+        shinfo = skb_shinfo(skb);
+        memset(shinfo, 0, offsetof(struct skb_shared_info, dataref));
+        atomic_set(&shinfo->dataref, 1);
+
+        memset(skb, 0, offsetof(struct sk_buff, tail));
+        skb->data = skb->head + NET_SKB_PAD;
+        skb_reset_tail_pointer(skb);
+}
+EXPORT_SYMBOL(skb_recycle);
+
+/**
  *      skb_recycle_check - check if skb can be reused for receive
  *      @skb: buffer
  *      @skb_size: minimum receive buffer size
@@ -488,33 +523,10 @@ EXPORT_SYMBOL(consume_skb);
  */
 bool skb_recycle_check(struct sk_buff *skb, int skb_size)
 {
-        struct skb_shared_info *shinfo;
-
-        if (irqs_disabled())
-                return false;
-
-        if (skb_shinfo(skb)->tx_flags & SKBTX_DEV_ZEROCOPY)
-                return false;
-
-        if (skb_is_nonlinear(skb) || skb->fclone != SKB_FCLONE_UNAVAILABLE)
+        if (!skb_is_recycleable(skb, skb_size))
                 return false;
 
-        skb_size = SKB_DATA_ALIGN(skb_size + NET_SKB_PAD);
-        if (skb_end_pointer(skb) - skb->head < skb_size)
-                return false;
-
-        if (skb_shared(skb) || skb_cloned(skb))
-                return false;
-
-        skb_release_head_state(skb);
-
-        shinfo = skb_shinfo(skb);
-        memset(shinfo, 0, offsetof(struct skb_shared_info, dataref));
-        atomic_set(&shinfo->dataref, 1);
-
-        memset(skb, 0, offsetof(struct sk_buff, tail));
-        skb->data = skb->head + NET_SKB_PAD;
-        skb_reset_tail_pointer(skb);
+        skb_recycle(skb);
 
         return true;
 }
@@ -529,6 +541,8 @@ static void __copy_skb_header(struct sk_buff *new, const struct sk_buff *old)
         new->mac_header         = old->mac_header;
         skb_dst_copy(new, old);
         new->rxhash             = old->rxhash;
+        new->ooo_okay           = old->ooo_okay;
+        new->l4_rxhash          = old->l4_rxhash;
 #ifdef CONFIG_XFRM
         new->sp                 = secpath_get(old->sp);
 #endif
@@ -647,7 +661,7 @@ int skb_copy_ubufs(struct sk_buff *skb, gfp_t gfp_mask)
                 }
                 vaddr = kmap_skb_frag(&skb_shinfo(skb)->frags[i]);
                 memcpy(page_address(page),
-                       vaddr + f->page_offset, f->size);
+                       vaddr + f->page_offset, skb_frag_size(f));
                 kunmap_skb_frag(vaddr);
                 page->private = (unsigned long)head;
                 head = page;
@@ -655,14 +669,14 @@ int skb_copy_ubufs(struct sk_buff *skb, gfp_t gfp_mask)
 
         /* skb frags release userspace buffers */
         for (i = 0; i < skb_shinfo(skb)->nr_frags; i++)
-                put_page(skb_shinfo(skb)->frags[i].page);
+                skb_frag_unref(skb, i);
 
         uarg->callback(uarg);
 
         /* skb frags point to kernel buffers */
         for (i = skb_shinfo(skb)->nr_frags; i > 0; i--) {
-                skb_shinfo(skb)->frags[i - 1].page_offset = 0;
-                skb_shinfo(skb)->frags[i - 1].page = head;
+                __skb_fill_page_desc(skb, i-1, head, 0,
+                                     skb_shinfo(skb)->frags[i - 1].size);
                 head = (struct page *)head->private;
         }
 
@@ -820,7 +834,7 @@ struct sk_buff *pskb_copy(struct sk_buff *skb, gfp_t gfp_mask)
                 }
                 for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) {
                         skb_shinfo(n)->frags[i] = skb_shinfo(skb)->frags[i];
-                        get_page(skb_shinfo(n)->frags[i].page);
+                        skb_frag_ref(skb, i);
                 }
                 skb_shinfo(n)->nr_frags = i;
         }
@@ -911,7 +925,7 @@ int pskb_expand_head(struct sk_buff *skb, int nhead, int ntail,
                                 goto nofrags;
                 }
                 for (i = 0; i < skb_shinfo(skb)->nr_frags; i++)
-                        get_page(skb_shinfo(skb)->frags[i].page);
+                        skb_frag_ref(skb, i);
 
                 if (skb_has_frag_list(skb))
                         skb_clone_fraglist(skb);
@@ -1178,20 +1192,20 @@ int ___pskb_trim(struct sk_buff *skb, unsigned int len)
                 goto drop_pages;
 
         for (; i < nfrags; i++) {
-                int end = offset + skb_shinfo(skb)->frags[i].size;
+                int end = offset + skb_frag_size(&skb_shinfo(skb)->frags[i]);
 
                 if (end < len) {
                         offset = end;
                         continue;
                 }
 
-                skb_shinfo(skb)->frags[i++].size = len - offset;
+                skb_frag_size_set(&skb_shinfo(skb)->frags[i++], len - offset);
 
 drop_pages:
                 skb_shinfo(skb)->nr_frags = i;
 
                 for (; i < nfrags; i++)
-                        put_page(skb_shinfo(skb)->frags[i].page);
+                        skb_frag_unref(skb, i);
 
                 if (skb_has_frag_list(skb))
                         skb_drop_fraglist(skb);
@@ -1294,9 +1308,11 @@ unsigned char *__pskb_pull_tail(struct sk_buff *skb, int delta)
         /* Estimate size of pulled pages. */
         eat = delta;
         for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) {
-                if (skb_shinfo(skb)->frags[i].size >= eat)
+                int size = skb_frag_size(&skb_shinfo(skb)->frags[i]);
+
+                if (size >= eat)
                         goto pull_pages;
-                eat -= skb_shinfo(skb)->frags[i].size;
+                eat -= size;
         }
 
         /* If we need update frag list, we are in troubles.
@@ -1359,14 +1375,16 @@ pull_pages:
         eat = delta;
         k = 0;
         for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) {
-                if (skb_shinfo(skb)->frags[i].size <= eat) {
-                        put_page(skb_shinfo(skb)->frags[i].page);
-                        eat -= skb_shinfo(skb)->frags[i].size;
+                int size = skb_frag_size(&skb_shinfo(skb)->frags[i]);
+
+                if (size <= eat) {
+                        skb_frag_unref(skb, i);
+                        eat -= size;
                 } else {
                         skb_shinfo(skb)->frags[k] = skb_shinfo(skb)->frags[i];
                         if (eat) {
                                 skb_shinfo(skb)->frags[k].page_offset += eat;
-                                skb_shinfo(skb)->frags[k].size -= eat;
+                                skb_frag_size_sub(&skb_shinfo(skb)->frags[k], eat);
                                 eat = 0;
                         }
                         k++;
@@ -1421,7 +1439,7 @@ int skb_copy_bits(const struct sk_buff *skb, int offset, void *to, int len)
 
                 WARN_ON(start > offset + len);
 
-                end = start + skb_shinfo(skb)->frags[i].size;
+                end = start + skb_frag_size(&skb_shinfo(skb)->frags[i]);
                 if ((copy = end - offset) > 0) {
                         u8 *vaddr;
 
@@ -1619,7 +1637,8 @@ static int __skb_splice_bits(struct sk_buff *skb, struct pipe_inode_info *pipe,
         for (seg = 0; seg < skb_shinfo(skb)->nr_frags; seg++) {
                 const skb_frag_t *f = &skb_shinfo(skb)->frags[seg];
 
-                if (__splice_segment(f->page, f->page_offset, f->size,
+                if (__splice_segment(skb_frag_page(f),
+                                     f->page_offset, skb_frag_size(f),
                                      offset, len, skb, spd, 0, sk, pipe))
                         return 1;
         }
@@ -1729,7 +1748,7 @@ int skb_store_bits(struct sk_buff *skb, int offset, const void *from, int len)
 
                 WARN_ON(start > offset + len);
 
-                end = start + frag->size;
+                end = start + skb_frag_size(frag);
                 if ((copy = end - offset) > 0) {
                         u8 *vaddr;
 
@@ -1802,7 +1821,7 @@ __wsum skb_checksum(const struct sk_buff *skb, int offset,
 
                 WARN_ON(start > offset + len);
 
-                end = start + skb_shinfo(skb)->frags[i].size;
+                end = start + skb_frag_size(&skb_shinfo(skb)->frags[i]);
                 if ((copy = end - offset) > 0) {
                         __wsum csum2;
                         u8 *vaddr;
@@ -1877,7 +1896,7 @@ __wsum skb_copy_and_csum_bits(const struct sk_buff *skb, int offset,
 
                 WARN_ON(start > offset + len);
 
-                end = start + skb_shinfo(skb)->frags[i].size;
+                end = start + skb_frag_size(&skb_shinfo(skb)->frags[i]);
                 if ((copy = end - offset) > 0) {
                         __wsum csum2;
                         u8 *vaddr;
@@ -2150,7 +2169,7 @@ static inline void skb_split_no_header(struct sk_buff *skb,
         skb->data_len             = len - pos;
 
         for (i = 0; i < nfrags; i++) {
-                int size = skb_shinfo(skb)->frags[i].size;
+                int size = skb_frag_size(&skb_shinfo(skb)->frags[i]);
 
                 if (pos + size > len) {
                         skb_shinfo(skb1)->frags[k] = skb_shinfo(skb)->frags[i];
@@ -2164,10 +2183,10 @@ static inline void skb_split_no_header(struct sk_buff *skb,
                                  *    where splitting is expensive.
                                  * 2. Split is accurately. We make this.
                                  */
-                                get_page(skb_shinfo(skb)->frags[i].page);
+                                skb_frag_ref(skb, i);
                                 skb_shinfo(skb1)->frags[0].page_offset += len - pos;
-                                skb_shinfo(skb1)->frags[0].size -= len - pos;
-                                skb_shinfo(skb)->frags[i].size  = len - pos;
+                                skb_frag_size_sub(&skb_shinfo(skb1)->frags[0], len - pos);
+                                skb_frag_size_set(&skb_shinfo(skb)->frags[i], len - pos);
                                 skb_shinfo(skb)->nr_frags++;
                         }
                         k++;
@@ -2239,12 +2258,13 @@ int skb_shift(struct sk_buff *tgt, struct sk_buff *skb, int shiftlen)
          * commit all, so that we don't have to undo partial changes
          */
         if (!to ||
-            !skb_can_coalesce(tgt, to, fragfrom->page, fragfrom->page_offset)) {
+            !skb_can_coalesce(tgt, to, skb_frag_page(fragfrom),
+                              fragfrom->page_offset)) {
                 merge = -1;
         } else {
                 merge = to - 1;
 
-                todo -= fragfrom->size;
+                todo -= skb_frag_size(fragfrom);
                 if (todo < 0) {
                         if (skb_prepare_for_shift(skb) ||
                             skb_prepare_for_shift(tgt))
@@ -2254,8 +2274,8 @@ int skb_shift(struct sk_buff *tgt, struct sk_buff *skb, int shiftlen)
                         fragfrom = &skb_shinfo(skb)->frags[from];
                         fragto = &skb_shinfo(tgt)->frags[merge];
 
-                        fragto->size += shiftlen;
-                        fragfrom->size -= shiftlen;
+                        skb_frag_size_add(fragto, shiftlen);
+                        skb_frag_size_sub(fragfrom, shiftlen);
                         fragfrom->page_offset += shiftlen;
 
                         goto onlymerged;
@@ -2279,20 +2299,20 @@ int skb_shift(struct sk_buff *tgt, struct sk_buff *skb, int shiftlen)
                 fragfrom = &skb_shinfo(skb)->frags[from];
                 fragto = &skb_shinfo(tgt)->frags[to];
 
-                if (todo >= fragfrom->size) {
+                if (todo >= skb_frag_size(fragfrom)) {
                         *fragto = *fragfrom;
-                        todo -= fragfrom->size;
+                        todo -= skb_frag_size(fragfrom);
                         from++;
                         to++;
 
                 } else {
-                        get_page(fragfrom->page);
+                        __skb_frag_ref(fragfrom);
                         fragto->page = fragfrom->page;
                         fragto->page_offset = fragfrom->page_offset;
-                        fragto->size = todo;
+                        skb_frag_size_set(fragto, todo);
 
                         fragfrom->page_offset += todo;
-                        fragfrom->size -= todo;
+                        skb_frag_size_sub(fragfrom, todo);
                         todo = 0;
 
                         to++;
@@ -2307,8 +2327,8 @@ int skb_shift(struct sk_buff *tgt, struct sk_buff *skb, int shiftlen)
                 fragfrom = &skb_shinfo(skb)->frags[0];
                 fragto = &skb_shinfo(tgt)->frags[merge];
 
-                fragto->size += fragfrom->size;
-                put_page(fragfrom->page);
+                skb_frag_size_add(fragto, skb_frag_size(fragfrom));
+                __skb_frag_unref(fragfrom);
         }
 
         /* Reposition in the original skb */
@@ -2405,7 +2425,7 @@ next_skb:
 
         while (st->frag_idx < skb_shinfo(st->cur_skb)->nr_frags) {
                 frag = &skb_shinfo(st->cur_skb)->frags[st->frag_idx];
-                block_limit = frag->size + st->stepped_offset;
+                block_limit = skb_frag_size(frag) + st->stepped_offset;
 
                 if (abs_offset < block_limit) {
                         if (!st->frag_data)
@@ -2423,7 +2443,7 @@ next_skb:
                 }
 
                 st->frag_idx++;
-                st->stepped_offset += frag->size;
+                st->stepped_offset += skb_frag_size(frag);
         }
 
         if (st->frag_data) {
@@ -2553,14 +2573,13 @@ int skb_append_datato_frags(struct sock *sk, struct sk_buff *skb,
                 left = PAGE_SIZE - frag->page_offset;
                 copy = (length > left)? left : length;
 
-                ret = getfrag(from, (page_address(frag->page) +
-                            frag->page_offset + frag->size),
+                ret = getfrag(from, skb_frag_address(frag) + skb_frag_size(frag),
                             offset, copy, 0, skb);
                 if (ret < 0)
                         return -EFAULT;
 
                 /* copy was successful so update the size parameters */
-                frag->size += copy;
+                skb_frag_size_add(frag, copy);
                 skb->len += copy;
                 skb->data_len += copy;
                 offset += copy;
@@ -2706,12 +2725,12 @@ struct sk_buff *skb_segment(struct sk_buff *skb, u32 features)
 
                 while (pos < offset + len && i < nfrags) {
                         *frag = skb_shinfo(skb)->frags[i];
-                        get_page(frag->page);
-                        size = frag->size;
+                        __skb_frag_ref(frag);
+                        size = skb_frag_size(frag);
 
                         if (pos < offset) {
                                 frag->page_offset += offset - pos;
-                                frag->size -= offset - pos;
+                                skb_frag_size_sub(frag, offset - pos);
                         }
 
                         skb_shinfo(nskb)->nr_frags++;
@@ -2720,7 +2739,7 @@ struct sk_buff *skb_segment(struct sk_buff *skb, u32 features)
                                 i++;
                                 pos += size;
                         } else {
-                                frag->size -= pos + size - (offset + len);
+                                skb_frag_size_sub(frag, pos + size - (offset + len));
                                 goto skip_fraglist;
                         }
 
@@ -2800,7 +2819,7 @@ int skb_gro_receive(struct sk_buff **head, struct sk_buff *skb)
                 } while (--i);
 
                 frag->page_offset += offset;
-                frag->size -= offset;
+                skb_frag_size_sub(frag, offset);
 
                 skb->truesize -= skb->data_len;
                 skb->len -= skb->data_len;
@@ -2852,7 +2871,7 @@ merge:
                 unsigned int eat = offset - headlen;
 
                 skbinfo->frags[0].page_offset += eat;
-                skbinfo->frags[0].size -= eat;
+                skb_frag_size_sub(&skbinfo->frags[0], eat);
                 skb->data_len -= eat;
                 skb->len -= eat;
                 offset = headlen;
@@ -2923,13 +2942,13 @@ __skb_to_sgvec(struct sk_buff *skb, struct scatterlist *sg, int offset, int len)
 
                 WARN_ON(start > offset + len);
 
-                end = start + skb_shinfo(skb)->frags[i].size;
+                end = start + skb_frag_size(&skb_shinfo(skb)->frags[i]);
                 if ((copy = end - offset) > 0) {
                         skb_frag_t *frag = &skb_shinfo(skb)->frags[i];
 
                         if (copy > len)
                                 copy = len;
-                        sg_set_page(&sg[elt], frag->page, copy,
+                        sg_set_page(&sg[elt], skb_frag_page(frag), copy,
                                         frag->page_offset+offset-start);
                         elt++;
                         if (!(len -= copy))
diff --git a/net/core/sock.c b/net/core/sock.c
index bc745d00ea4d..4ed7b1d12f5e 100644
--- a/net/core/sock.c
+++ b/net/core/sock.c
@@ -207,7 +207,7 @@ static struct lock_class_key af_callback_keys[AF_MAX];
  * not depend upon such differences.
  */
 #define _SK_MEM_PACKETS         256
-#define _SK_MEM_OVERHEAD        (sizeof(struct sk_buff) + 256)
+#define _SK_MEM_OVERHEAD        SKB_TRUESIZE(256)
 #define SK_WMEM_MAX             (_SK_MEM_OVERHEAD * _SK_MEM_PACKETS)
 #define SK_RMEM_MAX             (_SK_MEM_OVERHEAD * _SK_MEM_PACKETS)
 
@@ -387,7 +387,7 @@ struct dst_entry *__sk_dst_check(struct sock *sk, u32 cookie)
 
         if (dst && dst->obsolete && dst->ops->check(dst, cookie) == NULL) {
                 sk_tx_queue_clear(sk);
-                rcu_assign_pointer(sk->sk_dst_cache, NULL);
+                RCU_INIT_POINTER(sk->sk_dst_cache, NULL);
                 dst_release(dst);
                 return NULL;
         }
@@ -738,10 +738,7 @@ set_rcvbuf:
                 /* We implement the SO_SNDLOWAT etc to
                    not be settable (1003.1g 5.3) */
         case SO_RXQ_OVFL:
-                if (valbool)
-                        sock_set_flag(sk, SOCK_RXQ_OVFL);
-                else
-                        sock_reset_flag(sk, SOCK_RXQ_OVFL);
+                sock_valbool_flag(sk, SOCK_RXQ_OVFL, valbool);
                 break;
         default:
                 ret = -ENOPROTOOPT;
@@ -1158,7 +1155,7 @@ static void __sk_free(struct sock *sk)
                                        atomic_read(&sk->sk_wmem_alloc) == 0);
         if (filter) {
                 sk_filter_uncharge(sk, filter);
-                rcu_assign_pointer(sk->sk_filter, NULL);
+                RCU_INIT_POINTER(sk->sk_filter, NULL);
         }
 
         sock_disable_timestamp(sk, SOCK_TIMESTAMP);
@@ -1260,6 +1257,7 @@ struct sock *sk_clone(const struct sock *sk, const gfp_t priority)
                         /* It is still raw copy of parent, so invalidate
                          * destructor and make plain sk_free() */
                         newsk->sk_destruct = NULL;
+                        bh_unlock_sock(newsk);
                         sk_free(newsk);
                         newsk = NULL;
                         goto out;
@@ -1533,7 +1531,6 @@ struct sk_buff *sock_alloc_send_pskb(struct sock *sk, unsigned long header_len,
                                 skb_shinfo(skb)->nr_frags = npages;
                                 for (i = 0; i < npages; i++) {
                                         struct page *page;
-                                        skb_frag_t *frag;
 
                                         page = alloc_pages(sk->sk_allocation, 0);
                                         if (!page) {
@@ -1543,12 +1540,11 @@ struct sk_buff *sock_alloc_send_pskb(struct sock *sk, unsigned long header_len,
                                                 goto failure;
                                         }
 
-                                        frag = &skb_shinfo(skb)->frags[i];
-                                        frag->page = page;
-                                        frag->page_offset = 0;
-                                        frag->size = (data_len >= PAGE_SIZE ?
-                                                      PAGE_SIZE :
-                                                      data_len);
+                                        __skb_fill_page_desc(skb, i,
+                                                        page, 0,
+                                                        (data_len >= PAGE_SIZE ?
+                                                         PAGE_SIZE :
+                                                         data_len));
                                         data_len -= PAGE_SIZE;
                                 }
 
diff --git a/net/core/timestamping.c b/net/core/timestamping.c
index 98a52640e7cd..661b5a40ec10 100644
--- a/net/core/timestamping.c
+++ b/net/core/timestamping.c
@@ -21,6 +21,7 @@
 #include <linux/phy.h>
 #include <linux/ptp_classify.h>
 #include <linux/skbuff.h>
+#include <linux/export.h>
 
 static struct sock_filter ptp_filter[] = {
         PTP_FILTER
@@ -57,9 +58,13 @@ void skb_clone_tx_timestamp(struct sk_buff *skb)
         case PTP_CLASS_V2_VLAN:
                 phydev = skb->dev->phydev;
                 if (likely(phydev->drv->txtstamp)) {
+                        if (!atomic_inc_not_zero(&sk->sk_refcnt))
+                                return;
                         clone = skb_clone(skb, GFP_ATOMIC);
-                        if (!clone)
+                        if (!clone) {
+                                sock_put(sk);
                                 return;
+                        }
                         clone->sk = sk;
                         phydev->drv->txtstamp(phydev, clone, type);
                 }
@@ -77,8 +82,11 @@ void skb_complete_tx_timestamp(struct sk_buff *skb,
         struct sock_exterr_skb *serr;
         int err;
 
-        if (!hwtstamps)
+        if (!hwtstamps) {
+                sock_put(sk);
+                kfree_skb(skb);
                 return;
+        }
 
         *skb_hwtstamps(skb) = *hwtstamps;
         serr = SKB_EXT_ERR(skb);
@@ -87,6 +95,7 @@ void skb_complete_tx_timestamp(struct sk_buff *skb,
         serr->ee.ee_origin = SO_EE_ORIGIN_TIMESTAMPING;
         skb->sk = NULL;
         err = sock_queue_err_skb(sk, skb);
+        sock_put(sk);
         if (err)
                 kfree_skb(skb);
 }
diff --git a/net/core/user_dma.c b/net/core/user_dma.c
index 25d717ebc92e..1b5fefdb8198 100644
--- a/net/core/user_dma.c
+++ b/net/core/user_dma.c
@@ -27,6 +27,7 @@
 
 #include <linux/dmaengine.h>
 #include <linux/socket.h>
+#include <linux/export.h>
 #include <net/tcp.h>
 #include <net/netdma.h>
 
@@ -71,14 +72,14 @@ int dma_skb_copy_datagram_iovec(struct dma_chan *chan,
         /* Copy paged appendix. Hmm... why does this look so complicated? */
         for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) {
                 int end;
+                const skb_frag_t *frag = &skb_shinfo(skb)->frags[i];
 
                 WARN_ON(start > offset + len);
 
-                end = start + skb_shinfo(skb)->frags[i].size;
+                end = start + skb_frag_size(frag);
                 copy = end - offset;
                 if (copy > 0) {
-                        skb_frag_t *frag = &skb_shinfo(skb)->frags[i];
-                        struct page *page = frag->page;
+                        struct page *page = skb_frag_page(frag);
 
                         if (copy > len)
                                 copy = len;
diff --git a/net/dcb/dcbevent.c b/net/dcb/dcbevent.c
index 665a8802105a..1d9eb7c60a68 100644
--- a/net/dcb/dcbevent.c
+++ b/net/dcb/dcbevent.c
@@ -19,6 +19,7 @@
 
 #include <linux/rtnetlink.h>
 #include <linux/notifier.h>
+#include <linux/export.h>
 
 static ATOMIC_NOTIFIER_HEAD(dcbevent_notif_chain);
 
diff --git a/net/dcb/dcbnl.c b/net/dcb/dcbnl.c
index 3cb56af4e13c..d86053002c16 100644
--- a/net/dcb/dcbnl.c
+++ b/net/dcb/dcbnl.c
@@ -25,6 +25,7 @@
 #include <linux/dcbnl.h>
 #include <net/dcbevent.h>
 #include <linux/rtnetlink.h>
+#include <linux/module.h>
 #include <net/sock.h>
 
 /**
@@ -1255,7 +1256,7 @@ static int dcbnl_ieee_fill(struct sk_buff *skb, struct net_device *netdev)
 
         spin_lock(&dcb_lock);
         list_for_each_entry(itr, &dcb_app_list, list) {
-                if (strncmp(itr->name, netdev->name, IFNAMSIZ) == 0) {
+                if (itr->ifindex == netdev->ifindex) {
                         err = nla_put(skb, DCB_ATTR_IEEE_APP, sizeof(itr->app),
                                          &itr->app);
                         if (err) {
@@ -1412,7 +1413,7 @@ static int dcbnl_cee_fill(struct sk_buff *skb, struct net_device *netdev)
                 goto dcb_unlock;
 
         list_for_each_entry(itr, &dcb_app_list, list) {
-                if (strncmp(itr->name, netdev->name, IFNAMSIZ) == 0) {
+                if (itr->ifindex == netdev->ifindex) {
                         struct nlattr *app_nest = nla_nest_start(skb,
                                                                  DCB_ATTR_APP);
                         if (!app_nest)
@@ -2050,7 +2051,7 @@ u8 dcb_getapp(struct net_device *dev, struct dcb_app *app)
         list_for_each_entry(itr, &dcb_app_list, list) {
                 if (itr->app.selector == app->selector &&
                     itr->app.protocol == app->protocol &&
-                    (strncmp(itr->name, dev->name, IFNAMSIZ) == 0)) {
+                    itr->ifindex == dev->ifindex) {
                         prio = itr->app.priority;
                         break;
                 }
@@ -2073,15 +2074,17 @@ int dcb_setapp(struct net_device *dev, struct dcb_app *new)
         struct dcb_app_type *itr;
         struct dcb_app_type event;
 
-        memcpy(&event.name, dev->name, sizeof(event.name));
+        event.ifindex = dev->ifindex;
         memcpy(&event.app, new, sizeof(event.app));
+        if (dev->dcbnl_ops->getdcbx)
+                event.dcbx = dev->dcbnl_ops->getdcbx(dev);
 
         spin_lock(&dcb_lock);
         /* Search for existing match and replace */
         list_for_each_entry(itr, &dcb_app_list, list) {
                 if (itr->app.selector == new->selector &&
                     itr->app.protocol == new->protocol &&
-                    (strncmp(itr->name, dev->name, IFNAMSIZ) == 0)) {
+                    itr->ifindex == dev->ifindex) {
                         if (new->priority)
                                 itr->app.priority = new->priority;
                         else {
@@ -2101,7 +2104,7 @@ int dcb_setapp(struct net_device *dev, struct dcb_app *new)
                 }
 
                 memcpy(&entry->app, new, sizeof(*new));
-                strncpy(entry->name, dev->name, IFNAMSIZ);
+                entry->ifindex = dev->ifindex;
                 list_add(&entry->list, &dcb_app_list);
         }
 out:
@@ -2127,7 +2130,7 @@ u8 dcb_ieee_getapp_mask(struct net_device *dev, struct dcb_app *app)
         list_for_each_entry(itr, &dcb_app_list, list) {
                 if (itr->app.selector == app->selector &&
                     itr->app.protocol == app->protocol &&
-                    (strncmp(itr->name, dev->name, IFNAMSIZ) == 0)) {
+                    itr->ifindex == dev->ifindex) {
                         prio |= 1 << itr->app.priority;
                 }
         }
@@ -2150,8 +2153,10 @@ int dcb_ieee_setapp(struct net_device *dev, struct dcb_app *new)
         struct dcb_app_type event;
         int err = 0;
 
-        memcpy(&event.name, dev->name, sizeof(event.name));
+        event.ifindex = dev->ifindex;
         memcpy(&event.app, new, sizeof(event.app));
+        if (dev->dcbnl_ops->getdcbx)
+                event.dcbx = dev->dcbnl_ops->getdcbx(dev);
 
         spin_lock(&dcb_lock);
         /* Search for existing match and abort if found */
@@ -2159,7 +2164,7 @@ int dcb_ieee_setapp(struct net_device *dev, struct dcb_app *new)
                 if (itr->app.selector == new->selector &&
                     itr->app.protocol == new->protocol &&
                     itr->app.priority == new->priority &&
-                    (strncmp(itr->name, dev->name, IFNAMSIZ) == 0)) {
+                    itr->ifindex == dev->ifindex) {
                         err = -EEXIST;
                         goto out;
                 }
@@ -2173,7 +2178,7 @@ int dcb_ieee_setapp(struct net_device *dev, struct dcb_app *new)
         }
 
         memcpy(&entry->app, new, sizeof(*new));
-        strncpy(entry->name, dev->name, IFNAMSIZ);
+        entry->ifindex = dev->ifindex;
         list_add(&entry->list, &dcb_app_list);
 out:
         spin_unlock(&dcb_lock);
@@ -2194,8 +2199,10 @@ int dcb_ieee_delapp(struct net_device *dev, struct dcb_app *del)
         struct dcb_app_type event;
         int err = -ENOENT;
 
-        memcpy(&event.name, dev->name, sizeof(event.name));
+        event.ifindex = dev->ifindex;
         memcpy(&event.app, del, sizeof(event.app));
+        if (dev->dcbnl_ops->getdcbx)
+                event.dcbx = dev->dcbnl_ops->getdcbx(dev);
 
         spin_lock(&dcb_lock);
         /* Search for existing match and remove it. */
@@ -2203,7 +2210,7 @@ int dcb_ieee_delapp(struct net_device *dev, struct dcb_app *del)
                 if (itr->app.selector == del->selector &&
                     itr->app.protocol == del->protocol &&
                     itr->app.priority == del->priority &&
-                    (strncmp(itr->name, dev->name, IFNAMSIZ) == 0)) {
+                    itr->ifindex == dev->ifindex) {
                         list_del(&itr->list);
                         kfree(itr);
                         err = 0;
diff --git a/net/dccp/ackvec.c b/net/dccp/ackvec.c
index 25b7a8d1ad58..ba07824af4c0 100644
--- a/net/dccp/ackvec.c
+++ b/net/dccp/ackvec.c
@@ -12,6 +12,7 @@
 #include "dccp.h"
 #include <linux/kernel.h>
 #include <linux/slab.h>
+#include <linux/export.h>
 
 static struct kmem_cache *dccp_ackvec_slab;
 static struct kmem_cache *dccp_ackvec_record_slab;
diff --git a/net/dccp/ccids/ccid2.c b/net/dccp/ccids/ccid2.c
index 0462040fc818..67164bb6ae4d 100644
--- a/net/dccp/ccids/ccid2.c
+++ b/net/dccp/ccids/ccid2.c
@@ -85,7 +85,6 @@ static int ccid2_hc_tx_send_packet(struct sock *sk, struct sk_buff *skb)
 
 static void ccid2_change_l_ack_ratio(struct sock *sk, u32 val)
 {
-        struct dccp_sock *dp = dccp_sk(sk);
         u32 max_ratio = DIV_ROUND_UP(ccid2_hc_tx_sk(sk)->tx_cwnd, 2);
 
         /*
@@ -98,14 +97,33 @@ static void ccid2_change_l_ack_ratio(struct sock *sk, u32 val)
                 DCCP_WARN("Limiting Ack Ratio (%u) to %u\n", val, max_ratio);
                 val = max_ratio;
         }
-        if (val > DCCPF_ACK_RATIO_MAX)
-                val = DCCPF_ACK_RATIO_MAX;
+        dccp_feat_signal_nn_change(sk, DCCPF_ACK_RATIO,
+                                   min_t(u32, val, DCCPF_ACK_RATIO_MAX));
+}
 
-        if (val == dp->dccps_l_ack_ratio)
-                return;
+static void ccid2_check_l_ack_ratio(struct sock *sk)
+{
+        struct ccid2_hc_tx_sock *hc = ccid2_hc_tx_sk(sk);
 
-        ccid2_pr_debug("changing local ack ratio to %u\n", val);
-        dp->dccps_l_ack_ratio = val;
+        /*
+         * After a loss, idle period, application limited period, or RTO we
+         * need to check that the ack ratio is still less than the congestion
+         * window. Otherwise, we will send an entire congestion window of
+         * packets and got no response because we haven't sent ack ratio
+         * packets yet.
+         * If the ack ratio does need to be reduced, we reduce it to half of
+         * the congestion window (or 1 if that's zero) instead of to the
+         * congestion window. This prevents problems if one ack is lost.
+         */
+        if (dccp_feat_nn_get(sk, DCCPF_ACK_RATIO) > hc->tx_cwnd)
+                ccid2_change_l_ack_ratio(sk, hc->tx_cwnd/2 ? : 1U);
+}
+
+static void ccid2_change_l_seq_window(struct sock *sk, u64 val)
+{
+        dccp_feat_signal_nn_change(sk, DCCPF_SEQUENCE_WINDOW,
+                                   clamp_val(val, DCCPF_SEQ_WMIN,
+                                                  DCCPF_SEQ_WMAX));
 }
 
 static void ccid2_hc_tx_rto_expire(unsigned long data)
@@ -187,6 +205,8 @@ static void ccid2_cwnd_application_limited(struct sock *sk, const u32 now)
         }
         hc->tx_cwnd_used  = 0;
         hc->tx_cwnd_stamp = now;
+
+        ccid2_check_l_ack_ratio(sk);
 }
 
 /* This borrows the code of tcp_cwnd_restart() */
@@ -205,6 +225,8 @@ static void ccid2_cwnd_restart(struct sock *sk, const u32 now)
 
         hc->tx_cwnd_stamp = now;
         hc->tx_cwnd_used  = 0;
+
+        ccid2_check_l_ack_ratio(sk);
 }
 
 static void ccid2_hc_tx_packet_sent(struct sock *sk, unsigned int len)
@@ -405,17 +427,37 @@ static void ccid2_new_ack(struct sock *sk, struct ccid2_seq *seqp,
                           unsigned int *maxincr)
 {
         struct ccid2_hc_tx_sock *hc = ccid2_hc_tx_sk(sk);
-
-        if (hc->tx_cwnd < hc->tx_ssthresh) {
-                if (*maxincr > 0 && ++hc->tx_packets_acked == 2) {
+        struct dccp_sock *dp = dccp_sk(sk);
+        int r_seq_used = hc->tx_cwnd / dp->dccps_l_ack_ratio;
+
+        if (hc->tx_cwnd < dp->dccps_l_seq_win &&
+            r_seq_used < dp->dccps_r_seq_win) {
+                if (hc->tx_cwnd < hc->tx_ssthresh) {
+                        if (*maxincr > 0 && ++hc->tx_packets_acked >= 2) {
+                                hc->tx_cwnd += 1;
+                                *maxincr    -= 1;
+                                hc->tx_packets_acked = 0;
+                        }
+                } else if (++hc->tx_packets_acked >= hc->tx_cwnd) {
                         hc->tx_cwnd += 1;
-                        *maxincr    -= 1;
                         hc->tx_packets_acked = 0;
                 }
-        } else if (++hc->tx_packets_acked >= hc->tx_cwnd) {
-                        hc->tx_cwnd += 1;
-                        hc->tx_packets_acked = 0;
         }
+
+        /*
+         * Adjust the local sequence window and the ack ratio to allow about
+         * 5 times the number of packets in the network (RFC 4340 7.5.2)
+         */
+        if (r_seq_used * CCID2_WIN_CHANGE_FACTOR >= dp->dccps_r_seq_win)
+                ccid2_change_l_ack_ratio(sk, dp->dccps_l_ack_ratio * 2);
+        else if (r_seq_used * CCID2_WIN_CHANGE_FACTOR < dp->dccps_r_seq_win/2)
+                ccid2_change_l_ack_ratio(sk, dp->dccps_l_ack_ratio / 2 ? : 1U);
+
+        if (hc->tx_cwnd * CCID2_WIN_CHANGE_FACTOR >= dp->dccps_l_seq_win)
+                ccid2_change_l_seq_window(sk, dp->dccps_l_seq_win * 2);
+        else if (hc->tx_cwnd * CCID2_WIN_CHANGE_FACTOR < dp->dccps_l_seq_win/2)
+                ccid2_change_l_seq_window(sk, dp->dccps_l_seq_win / 2);
+
         /*
          * FIXME: RTT is sampled several times per acknowledgment (for each
          * entry in the Ack Vector), instead of once per Ack (as in TCP SACK).
@@ -441,9 +483,7 @@ static void ccid2_congestion_event(struct sock *sk, struct ccid2_seq *seqp)
         hc->tx_cwnd      = hc->tx_cwnd / 2 ? : 1U;
         hc->tx_ssthresh  = max(hc->tx_cwnd, 2U);
 
-        /* Avoid spurious timeouts resulting from Ack Ratio > cwnd */
-        if (dccp_sk(sk)->dccps_l_ack_ratio > hc->tx_cwnd)
-                ccid2_change_l_ack_ratio(sk, hc->tx_cwnd);
+        ccid2_check_l_ack_ratio(sk);
 }
 
 static int ccid2_hc_tx_parse_options(struct sock *sk, u8 packet_type,
@@ -494,8 +534,16 @@ static void ccid2_hc_tx_packet_recv(struct sock *sk, struct sk_buff *skb)
                         if (hc->tx_rpdupack >= NUMDUPACK) {
                                 hc->tx_rpdupack = -1; /* XXX lame */
                                 hc->tx_rpseq    = 0;
-
+#ifdef __CCID2_COPES_GRACEFULLY_WITH_ACK_CONGESTION_CONTROL__
+                                /*
+                                 * FIXME: Ack Congestion Control is broken; in
+                                 * the current state instabilities occurred with
+                                 * Ack Ratios greater than 1; causing hang-ups
+                                 * and long RTO timeouts. This needs to be fixed
+                                 * before opening up dynamic changes. -- gerrit
+                                 */
                                 ccid2_change_l_ack_ratio(sk, 2 * dp->dccps_l_ack_ratio);
+#endif
                         }
                 }
         }
diff --git a/net/dccp/ccids/ccid2.h b/net/dccp/ccids/ccid2.h
index f585d330e1e5..18c97543e522 100644
--- a/net/dccp/ccids/ccid2.h
+++ b/net/dccp/ccids/ccid2.h
@@ -43,6 +43,12 @@ struct ccid2_seq {
 #define CCID2_SEQBUF_LEN 1024
 #define CCID2_SEQBUF_MAX 128
 
+/*
+ * Multiple of congestion window to keep the sequence window at
+ * (RFC 4340 7.5.2)
+ */
+#define CCID2_WIN_CHANGE_FACTOR 5
+
 /**
  * struct ccid2_hc_tx_sock - CCID2 TX half connection
  * @tx_{cwnd,ssthresh,pipe}: as per RFC 4341, section 5
diff --git a/net/dccp/ccids/lib/tfrc.c b/net/dccp/ccids/lib/tfrc.c
index 4902029854d8..1f94b7e01d39 100644
--- a/net/dccp/ccids/lib/tfrc.c
+++ b/net/dccp/ccids/lib/tfrc.c
@@ -4,6 +4,7 @@
  * Copyright (c) 2007 The University of Aberdeen, Scotland, UK
  * Copyright (c) 2007 Arnaldo Carvalho de Melo <acme@redhat.com>
  */
+#include <linux/moduleparam.h>
 #include "tfrc.h"
 
 #ifdef CONFIG_IP_DCCP_TFRC_DEBUG
diff --git a/net/dccp/dccp.h b/net/dccp/dccp.h
index 5fdb07229017..583490aaf56f 100644
--- a/net/dccp/dccp.h
+++ b/net/dccp/dccp.h
@@ -474,6 +474,7 @@ static inline int dccp_ack_pending(const struct sock *sk)
         return dccp_ackvec_pending(sk) || inet_csk_ack_scheduled(sk);
 }
 
+extern int  dccp_feat_signal_nn_change(struct sock *sk, u8 feat, u64 nn_val);
 extern int  dccp_feat_finalise_settings(struct dccp_sock *dp);
 extern int  dccp_feat_server_ccid_dependencies(struct dccp_request_sock *dreq);
 extern int  dccp_feat_insert_opts(struct dccp_sock*, struct dccp_request_sock*,
diff --git a/net/dccp/feat.c b/net/dccp/feat.c
index 568def952722..23cea0ee3101 100644
--- a/net/dccp/feat.c
+++ b/net/dccp/feat.c
@@ -12,6 +12,7 @@
  *  -----------
  *  o Feature negotiation is coordinated with connection setup (as in TCP), wild
  *    changes of parameters of an established connection are not supported.
+ *  o Changing non-negotiable (NN) values is supported in state OPEN/PARTOPEN.
  *  o All currently known SP features have 1-byte quantities. If in the future
  *    extensions of RFCs 4340..42 define features with item lengths larger than
  *    one byte, a feature-specific extension of the code will be required.
@@ -343,6 +344,20 @@ static int __dccp_feat_activate(struct sock *sk, const int idx,
         return dccp_feat_table[idx].activation_hdlr(sk, val, rx);
 }
 
+/**
+ * dccp_feat_activate  -  Activate feature value on socket
+ * @sk: fully connected DCCP socket (after handshake is complete)
+ * @feat_num: feature to activate, one of %dccp_feature_numbers
+ * @local: whether local (1) or remote (0) @feat_num is meant
+ * @fval: the value (SP or NN) to activate, or NULL to use the default value
+ * For general use this function is preferable over __dccp_feat_activate().
+ */
+static int dccp_feat_activate(struct sock *sk, u8 feat_num, bool local,
+                              dccp_feat_val const *fval)
+{
+        return __dccp_feat_activate(sk, dccp_feat_index(feat_num), local, fval);
+}
+
 /* Test for "Req'd" feature (RFC 4340, 6.4) */
 static inline int dccp_feat_must_be_understood(u8 feat_num)
 {
@@ -650,11 +665,22 @@ int dccp_feat_insert_opts(struct dccp_sock *dp, struct dccp_request_sock *dreq,
                         return -1;
                 if (pos->needs_mandatory && dccp_insert_option_mandatory(skb))
                         return -1;
-                /*
-                 * Enter CHANGING after transmitting the Change option (6.6.2).
-                 */
-                if (pos->state == FEAT_INITIALISING)
-                        pos->state = FEAT_CHANGING;
+
+                if (skb->sk->sk_state == DCCP_OPEN &&
+                    (opt == DCCPO_CONFIRM_R || opt == DCCPO_CONFIRM_L)) {
+                        /*
+                         * Confirms don't get retransmitted (6.6.3) once the
+                         * connection is in state OPEN
+                         */
+                        dccp_feat_list_pop(pos);
+                } else {
+                        /*
+                         * Enter CHANGING after transmitting the Change
+                         * option (6.6.2).
+                         */
+                        if (pos->state == FEAT_INITIALISING)
+                                pos->state = FEAT_CHANGING;
+                }
         }
         return 0;
 }
@@ -730,6 +756,70 @@ int dccp_feat_register_sp(struct sock *sk, u8 feat, u8 is_local,
                                   0, list, len);
 }
 
+/**
+ * dccp_feat_nn_get  -  Query current/pending value of NN feature
+ * @sk: DCCP socket of an established connection
+ * @feat: NN feature number from %dccp_feature_numbers
+ * For a known NN feature, returns value currently being negotiated, or
+ * current (confirmed) value if no negotiation is going on.
+ */
+u64 dccp_feat_nn_get(struct sock *sk, u8 feat)
+{
+        if (dccp_feat_type(feat) == FEAT_NN) {
+                struct dccp_sock *dp = dccp_sk(sk);
+                struct dccp_feat_entry *entry;
+
+                entry = dccp_feat_list_lookup(&dp->dccps_featneg, feat, 1);
+                if (entry != NULL)
+                        return entry->val.nn;
+
+                switch (feat) {
+                case DCCPF_ACK_RATIO:
+                        return dp->dccps_l_ack_ratio;
+                case DCCPF_SEQUENCE_WINDOW:
+                        return dp->dccps_l_seq_win;
+                }
+        }
+        DCCP_BUG("attempt to look up unsupported feature %u", feat);
+        return 0;
+}
+EXPORT_SYMBOL_GPL(dccp_feat_nn_get);
+
+/**
+ * dccp_feat_signal_nn_change  -  Update NN values for an established connection
+ * @sk: DCCP socket of an established connection
+ * @feat: NN feature number from %dccp_feature_numbers
+ * @nn_val: the new value to use
+ * This function is used to communicate NN updates out-of-band.
+ */
+int dccp_feat_signal_nn_change(struct sock *sk, u8 feat, u64 nn_val)
+{
+        struct list_head *fn = &dccp_sk(sk)->dccps_featneg;
+        dccp_feat_val fval = { .nn = nn_val };
+        struct dccp_feat_entry *entry;
+
+        if (sk->sk_state != DCCP_OPEN && sk->sk_state != DCCP_PARTOPEN)
+                return 0;
+
+        if (dccp_feat_type(feat) != FEAT_NN ||
+            !dccp_feat_is_valid_nn_val(feat, nn_val))
+                return -EINVAL;
+
+        if (nn_val == dccp_feat_nn_get(sk, feat))
+                return 0;       /* already set or negotiation under way */
+
+        entry = dccp_feat_list_lookup(fn, feat, 1);
+        if (entry != NULL) {
+                dccp_pr_debug("Clobbering existing NN entry %llu -> %llu\n",
+                              (unsigned long long)entry->val.nn,
+                              (unsigned long long)nn_val);
+                dccp_feat_list_pop(entry);
+        }
+
+        inet_csk_schedule_ack(sk);
+        return dccp_feat_push_change(fn, feat, 1, 0, &fval);
+}
+EXPORT_SYMBOL_GPL(dccp_feat_signal_nn_change);
 
 /*
  *      Tracking features whose value depend on the choice of CCID
@@ -1187,6 +1277,100 @@ confirmation_failed:
 }
 
 /**
+ * dccp_feat_handle_nn_established  -  Fast-path reception of NN options
+ * @sk:         socket of an established DCCP connection
+ * @mandatory:  whether @opt was preceded by a Mandatory option
+ * @opt:        %DCCPO_CHANGE_L | %DCCPO_CONFIRM_R (NN only)
+ * @feat:       NN number, one of %dccp_feature_numbers
+ * @val:        NN value
+ * @len:        length of @val in bytes
+ * This function combines the functionality of change_recv/confirm_recv, with
+ * the following differences (reset codes are the same):
+ *    - cleanup after receiving the Confirm;
+ *    - values are directly activated after successful parsing;
+ *    - deliberately restricted to NN features.
+ * The restriction to NN features is essential since SP features can have non-
+ * predictable outcomes (depending on the remote configuration), and are inter-
+ * dependent (CCIDs for instance cause further dependencies).
+ */
+static u8 dccp_feat_handle_nn_established(struct sock *sk, u8 mandatory, u8 opt,
+                                          u8 feat, u8 *val, u8 len)
+{
+        struct list_head *fn = &dccp_sk(sk)->dccps_featneg;
+        const bool local = (opt == DCCPO_CONFIRM_R);
+        struct dccp_feat_entry *entry;
+        u8 type = dccp_feat_type(feat);
+        dccp_feat_val fval;
+
+        dccp_feat_print_opt(opt, feat, val, len, mandatory);
+
+        /* Ignore non-mandatory unknown and non-NN features */
+        if (type == FEAT_UNKNOWN) {
+                if (local && !mandatory)
+                        return 0;
+                goto fast_path_unknown;
+        } else if (type != FEAT_NN) {
+                return 0;
+        }
+
+        /*
+         * We don't accept empty Confirms, since in fast-path feature
+         * negotiation the values are enabled immediately after sending
+         * the Change option.
+         * Empty Changes on the other hand are invalid (RFC 4340, 6.1).
+         */
+        if (len == 0 || len > sizeof(fval.nn))
+                goto fast_path_unknown;
+
+        if (opt == DCCPO_CHANGE_L) {
+                fval.nn = dccp_decode_value_var(val, len);
+                if (!dccp_feat_is_valid_nn_val(feat, fval.nn))
+                        goto fast_path_unknown;
+
+                if (dccp_feat_push_confirm(fn, feat, local, &fval) ||
+                    dccp_feat_activate(sk, feat, local, &fval))
+                        return DCCP_RESET_CODE_TOO_BUSY;
+
+                /* set the `Ack Pending' flag to piggyback a Confirm */
+                inet_csk_schedule_ack(sk);
+
+        } else if (opt == DCCPO_CONFIRM_R) {
+                entry = dccp_feat_list_lookup(fn, feat, local);
+                if (entry == NULL || entry->state != FEAT_CHANGING)
+                        return 0;
+
+                fval.nn = dccp_decode_value_var(val, len);
+                /*
+                 * Just ignore a value that doesn't match our current value.
+                 * If the option changes twice within two RTTs, then at least
+                 * one CONFIRM will be received for the old value after a
+                 * new CHANGE was sent.
+                 */
+                if (fval.nn != entry->val.nn)
+                        return 0;
+
+                /* Only activate after receiving the Confirm option (6.6.1). */
+                dccp_feat_activate(sk, feat, local, &fval);
+
+                /* It has been confirmed - so remove the entry */
+                dccp_feat_list_pop(entry);
+
+        } else {
+                DCCP_WARN("Received illegal option %u\n", opt);
+                goto fast_path_failed;
+        }
+        return 0;
+
+fast_path_unknown:
+        if (!mandatory)
+                return dccp_push_empty_confirm(fn, feat, local);
+
+fast_path_failed:
+        return mandatory ? DCCP_RESET_CODE_MANDATORY_ERROR
+                         : DCCP_RESET_CODE_OPTION_ERROR;
+}
+
+/**
  * dccp_feat_parse_options  -  Process Feature-Negotiation Options
  * @sk: for general use and used by the client during connection setup
  * @dreq: used by the server during connection setup
@@ -1221,6 +1405,14 @@ int dccp_feat_parse_options(struct sock *sk, struct dccp_request_sock *dreq,
                         return dccp_feat_confirm_recv(fn, mandatory, opt, feat,
                                                       val, len, server);
                 }
+                break;
+        /*
+         *      Support for exchanging NN options on an established connection.
+         */
+        case DCCP_OPEN:
+        case DCCP_PARTOPEN:
+                return dccp_feat_handle_nn_established(sk, mandatory, opt, feat,
+                                                       val, len);
         }
         return 0;       /* ignore FN options in all other states */
 }
diff --git a/net/dccp/feat.h b/net/dccp/feat.h
index e56a4e5e634e..90b957d34d26 100644
--- a/net/dccp/feat.h
+++ b/net/dccp/feat.h
@@ -129,6 +129,7 @@ extern int  dccp_feat_clone_list(struct list_head const *, struct list_head *);
 
 extern void dccp_encode_value_var(const u64 value, u8 *to, const u8 len);
 extern u64  dccp_decode_value_var(const u8 *bf, const u8 len);
+extern u64  dccp_feat_nn_get(struct sock *sk, u8 feat);
 
 extern int  dccp_insert_option_mandatory(struct sk_buff *skb);
 extern int  dccp_insert_fn_opt(struct sk_buff *skb, u8 type, u8 feat,
diff --git a/net/dccp/ipv4.c b/net/dccp/ipv4.c
index 332639b56f4d..90a919afbed7 100644
--- a/net/dccp/ipv4.c
+++ b/net/dccp/ipv4.c
@@ -433,6 +433,7 @@ exit:
         NET_INC_STATS_BH(sock_net(sk), LINUX_MIB_LISTENDROPS);
         return NULL;
 put_and_exit:
+        bh_unlock_sock(newsk);
         sock_put(newsk);
         goto exit;
 }
diff --git a/net/dccp/ipv6.c b/net/dccp/ipv6.c
index b74f76117dcf..17ee85ce148d 100644
--- a/net/dccp/ipv6.c
+++ b/net/dccp/ipv6.c
@@ -271,7 +271,7 @@ static int dccp_v6_send_response(struct sock *sk, struct request_sock *req,
                                                          &ireq6->loc_addr,
                                                          &ireq6->rmt_addr);
                 ipv6_addr_copy(&fl6.daddr, &ireq6->rmt_addr);
-                err = ip6_xmit(sk, skb, &fl6, opt);
+                err = ip6_xmit(sk, skb, &fl6, opt, np->tclass);
                 err = net_xmit_eval(err);
         }
 
@@ -326,7 +326,7 @@ static void dccp_v6_ctl_send_reset(struct sock *sk, struct sk_buff *rxskb)
         dst = ip6_dst_lookup_flow(ctl_sk, &fl6, NULL, false);
         if (!IS_ERR(dst)) {
                 skb_dst_set(skb, dst);
-                ip6_xmit(ctl_sk, skb, &fl6, NULL);
+                ip6_xmit(ctl_sk, skb, &fl6, NULL, 0);
                 DCCP_INC_STATS_BH(DCCP_MIB_OUTSEGS);
                 DCCP_INC_STATS_BH(DCCP_MIB_OUTRSTS);
                 return;
diff --git a/net/dccp/proto.c b/net/dccp/proto.c
index 152975d942d9..e742f90a6858 100644
--- a/net/dccp/proto.c
+++ b/net/dccp/proto.c
@@ -184,7 +184,6 @@ int dccp_init_sock(struct sock *sk, const __u8 ctl_sock_initialized)
         dp->dccps_rate_last     = jiffies;
         dp->dccps_role          = DCCP_ROLE_UNDEFINED;
         dp->dccps_service       = DCCP_SERVICE_CODE_IS_ABSENT;
-        dp->dccps_l_ack_ratio   = dp->dccps_r_ack_ratio = 1;
         dp->dccps_tx_qlen       = sysctl_dccp_tx_qlen;
 
         dccp_init_xmit_timers(sk);
diff --git a/net/dccp/timer.c b/net/dccp/timer.c
index 7587870b7040..16f0b223102e 100644
--- a/net/dccp/timer.c
+++ b/net/dccp/timer.c
@@ -12,6 +12,7 @@
 
 #include <linux/dccp.h>
 #include <linux/skbuff.h>
+#include <linux/export.h>
 
 #include "dccp.h"
 
diff --git a/net/decnet/dn_dev.c b/net/decnet/dn_dev.c
index ba4faceec405..2ab16e12520c 100644
--- a/net/decnet/dn_dev.c
+++ b/net/decnet/dn_dev.c
@@ -388,7 +388,7 @@ static int dn_dev_insert_ifa(struct dn_dev *dn_db, struct dn_ifaddr *ifa)
         }
 
         ifa->ifa_next = dn_db->ifa_list;
-        rcu_assign_pointer(dn_db->ifa_list, ifa);
+        RCU_INIT_POINTER(dn_db->ifa_list, ifa);
 
         dn_ifaddr_notify(RTM_NEWADDR, ifa);
         blocking_notifier_call_chain(&dnaddr_chain, NETDEV_UP, ifa);
@@ -1093,7 +1093,7 @@ static struct dn_dev *dn_dev_create(struct net_device *dev, int *err)
 
         memcpy(&dn_db->parms, p, sizeof(struct dn_dev_parms));
 
-        rcu_assign_pointer(dev->dn_ptr, dn_db);
+        RCU_INIT_POINTER(dev->dn_ptr, dn_db);
         dn_db->dev = dev;
         init_timer(&dn_db->timer);
 
@@ -1101,7 +1101,7 @@ static struct dn_dev *dn_dev_create(struct net_device *dev, int *err)
 
         dn_db->neigh_parms = neigh_parms_alloc(dev, &dn_neigh_table);
         if (!dn_db->neigh_parms) {
-                rcu_assign_pointer(dev->dn_ptr, NULL);
+                RCU_INIT_POINTER(dev->dn_ptr, NULL);
                 kfree(dn_db);
                 return NULL;
         }
diff --git a/net/decnet/dn_route.c b/net/decnet/dn_route.c
index 43450c100226..a77d16158eb6 100644
--- a/net/decnet/dn_route.c
+++ b/net/decnet/dn_route.c
@@ -77,6 +77,7 @@
 #include <linux/netfilter_decnet.h>
 #include <linux/rcupdate.h>
 #include <linux/times.h>
+#include <linux/export.h>
 #include <asm/errno.h>
 #include <net/net_namespace.h>
 #include <net/netlink.h>
diff --git a/net/decnet/dn_rules.c b/net/decnet/dn_rules.c
index f0efb0ccfeca..f65c9ddaee41 100644
--- a/net/decnet/dn_rules.c
+++ b/net/decnet/dn_rules.c
@@ -23,6 +23,7 @@
 #include <linux/spinlock.h>
 #include <linux/list.h>
 #include <linux/rcupdate.h>
+#include <linux/export.h>
 #include <net/neighbour.h>
 #include <net/dst.h>
 #include <net/flow.h>
diff --git a/net/dsa/dsa.c b/net/dsa/dsa.c
index 3fb14b7c13cf..0dc1589343c3 100644
--- a/net/dsa/dsa.c
+++ b/net/dsa/dsa.c
@@ -12,6 +12,7 @@
 #include <linux/netdevice.h>
 #include <linux/platform_device.h>
 #include <linux/slab.h>
+#include <linux/module.h>
 #include <net/dsa.h>
 #include "dsa_priv.h"
 
diff --git a/net/dsa/slave.c b/net/dsa/slave.c
index 0a47b6c37038..56cf9b8e1c7c 100644
--- a/net/dsa/slave.c
+++ b/net/dsa/slave.c
@@ -301,7 +301,6 @@ static const struct net_device_ops dsa_netdev_ops = {
         .ndo_start_xmit         = dsa_xmit,
         .ndo_change_rx_flags    = dsa_slave_change_rx_flags,
         .ndo_set_rx_mode        = dsa_slave_set_rx_mode,
-        .ndo_set_multicast_list = dsa_slave_set_rx_mode,
         .ndo_set_mac_address    = dsa_slave_set_mac_address,
         .ndo_do_ioctl           = dsa_slave_ioctl,
 };
@@ -314,7 +313,6 @@ static const struct net_device_ops edsa_netdev_ops = {
         .ndo_start_xmit         = edsa_xmit,
         .ndo_change_rx_flags    = dsa_slave_change_rx_flags,
         .ndo_set_rx_mode        = dsa_slave_set_rx_mode,
-        .ndo_set_multicast_list = dsa_slave_set_rx_mode,
         .ndo_set_mac_address    = dsa_slave_set_mac_address,
         .ndo_do_ioctl           = dsa_slave_ioctl,
 };
@@ -327,7 +325,6 @@ static const struct net_device_ops trailer_netdev_ops = {
         .ndo_start_xmit         = trailer_xmit,
         .ndo_change_rx_flags    = dsa_slave_change_rx_flags,
         .ndo_set_rx_mode        = dsa_slave_set_rx_mode,
-        .ndo_set_multicast_list = dsa_slave_set_rx_mode,
         .ndo_set_mac_address    = dsa_slave_set_mac_address,
         .ndo_do_ioctl           = dsa_slave_ioctl,
 };
diff --git a/net/ieee802154/6lowpan.c b/net/ieee802154/6lowpan.c
new file mode 100644
index 000000000000..19d6aefe97d4
--- /dev/null
+++ b/net/ieee802154/6lowpan.c
@@ -0,0 +1,891 @@
+/*
+ * Copyright 2011, Siemens AG
+ * written by Alexander Smirnov <alex.bluesman.smirnov@gmail.com>
+ */
+
+/*
+ * Based on patches from Jon Smirl <jonsmirl@gmail.com>
+ * Copyright (c) 2011 Jon Smirl <jonsmirl@gmail.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2
+ * as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ */
+
+/* Jon's code is based on 6lowpan implementation for Contiki which is:
+ * Copyright (c) 2008, Swedish Institute of Computer Science.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of the Institute nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#define DEBUG
+
+#include <linux/bitops.h>
+#include <linux/if_arp.h>
+#include <linux/module.h>
+#include <linux/moduleparam.h>
+#include <linux/netdevice.h>
+#include <net/af_ieee802154.h>
+#include <net/ieee802154.h>
+#include <net/ieee802154_netdev.h>
+#include <net/ipv6.h>
+
+#include "6lowpan.h"
+
+/* TTL uncompression values */
+static const u8 lowpan_ttl_values[] = {0, 1, 64, 255};
+
+static LIST_HEAD(lowpan_devices);
+
+/*
+ * Uncompression of linklocal:
+ *   0 -> 16 bytes from packet
+ *   1 -> 2  bytes from prefix - bunch of zeroes and 8 from packet
+ *   2 -> 2  bytes from prefix - zeroes + 2 from packet
+ *   3 -> 2  bytes from prefix - infer 8 bytes from lladdr
+ *
+ *  NOTE: => the uncompress function does change 0xf to 0x10
+ *  NOTE: 0x00 => no-autoconfig => unspecified
+ */
+static const u8 lowpan_unc_llconf[] = {0x0f, 0x28, 0x22, 0x20};
+
+/*
+ * Uncompression of ctx-based:
+ *   0 -> 0 bits  from packet [unspecified / reserved]
+ *   1 -> 8 bytes from prefix - bunch of zeroes and 8 from packet
+ *   2 -> 8 bytes from prefix - zeroes + 2 from packet
+ *   3 -> 8 bytes from prefix - infer 8 bytes from lladdr
+ */
+static const u8 lowpan_unc_ctxconf[] = {0x00, 0x88, 0x82, 0x80};
+
+/*
+ * Uncompression of ctx-base
+ *   0 -> 0 bits from packet
+ *   1 -> 2 bytes from prefix - bunch of zeroes 5 from packet
+ *   2 -> 2 bytes from prefix - zeroes + 3 from packet
+ *   3 -> 2 bytes from prefix - infer 1 bytes from lladdr
+ */
+static const u8 lowpan_unc_mxconf[] = {0x0f, 0x25, 0x23, 0x21};
+
+/* Link local prefix */
+static const u8 lowpan_llprefix[] = {0xfe, 0x80};
+
+/* private device info */
+struct lowpan_dev_info {
+        struct net_device       *real_dev; /* real WPAN device ptr */
+        struct mutex            dev_list_mtx; /* mutex for list ops */
+};
+
+struct lowpan_dev_record {
+        struct net_device *ldev;
+        struct list_head list;
+};
+
+static inline struct
+lowpan_dev_info *lowpan_dev_info(const struct net_device *dev)
+{
+        return netdev_priv(dev);
+}
+
+static inline void lowpan_address_flip(u8 *src, u8 *dest)
+{
+        int i;
+        for (i = 0; i < IEEE802154_ADDR_LEN; i++)
+                (dest)[IEEE802154_ADDR_LEN - i - 1] = (src)[i];
+}
+
+/* list of all 6lowpan devices, uses for package delivering */
+/* print data in line */
+static inline void lowpan_raw_dump_inline(const char *caller, char *msg,
+                                   unsigned char *buf, int len)
+{
+#ifdef DEBUG
+        if (msg)
+                pr_debug("(%s) %s: ", caller, msg);
+        print_hex_dump(KERN_DEBUG, "", DUMP_PREFIX_NONE,
+                       16, 1, buf, len, false);
+#endif /* DEBUG */
+}
+
+/*
+ * print data in a table format:
+ *
+ * addr: xx xx xx xx xx xx
+ * addr: xx xx xx xx xx xx
+ * ...
+ */
+static inline void lowpan_raw_dump_table(const char *caller, char *msg,
+                                   unsigned char *buf, int len)
+{
+#ifdef DEBUG
+        if (msg)
+                pr_debug("(%s) %s:\n", caller, msg);
+        print_hex_dump(KERN_DEBUG, "\t", DUMP_PREFIX_OFFSET,
+                       16, 1, buf, len, false);
+#endif /* DEBUG */
+}
+
+static u8
+lowpan_compress_addr_64(u8 **hc06_ptr, u8 shift, const struct in6_addr *ipaddr,
+                 const unsigned char *lladdr)
+{
+        u8 val = 0;
+
+        if (is_addr_mac_addr_based(ipaddr, lladdr))
+                val = 3; /* 0-bits */
+        else if (lowpan_is_iid_16_bit_compressable(ipaddr)) {
+                /* compress IID to 16 bits xxxx::XXXX */
+                memcpy(*hc06_ptr, &ipaddr->s6_addr16[7], 2);
+                *hc06_ptr += 2;
+                val = 2; /* 16-bits */
+        } else {
+                /* do not compress IID => xxxx::IID */
+                memcpy(*hc06_ptr, &ipaddr->s6_addr16[4], 8);
+                *hc06_ptr += 8;
+                val = 1; /* 64-bits */
+        }
+
+        return rol8(val, shift);
+}
+
+static void
+lowpan_uip_ds6_set_addr_iid(struct in6_addr *ipaddr, unsigned char *lladdr)
+{
+        memcpy(&ipaddr->s6_addr[8], lladdr, IEEE802154_ALEN);
+        /* second bit-flip (Universe/Local) is done according RFC2464 */
+        ipaddr->s6_addr[8] ^= 0x02;
+}
+
+/*
+ * Uncompress addresses based on a prefix and a postfix with zeroes in
+ * between. If the postfix is zero in length it will use the link address
+ * to configure the IP address (autoconf style).
+ * pref_post_count takes a byte where the first nibble specify prefix count
+ * and the second postfix count (NOTE: 15/0xf => 16 bytes copy).
+ */
+static int
+lowpan_uncompress_addr(struct sk_buff *skb, struct in6_addr *ipaddr,
+        u8 const *prefix, u8 pref_post_count, unsigned char *lladdr)
+{
+        u8 prefcount = pref_post_count >> 4;
+        u8 postcount = pref_post_count & 0x0f;
+
+        /* full nibble 15 => 16 */
+        prefcount = (prefcount == 15 ? 16 : prefcount);
+        postcount = (postcount == 15 ? 16 : postcount);
+
+        if (lladdr)
+                lowpan_raw_dump_inline(__func__, "linklocal address",
+                                                lladdr, IEEE802154_ALEN);
+        if (prefcount > 0)
+                memcpy(ipaddr, prefix, prefcount);
+
+        if (prefcount + postcount < 16)
+                memset(&ipaddr->s6_addr[prefcount], 0,
+                                        16 - (prefcount + postcount));
+
+        if (postcount > 0) {
+                memcpy(&ipaddr->s6_addr[16 - postcount], skb->data, postcount);
+                skb_pull(skb, postcount);
+        } else if (prefcount > 0) {
+                if (lladdr == NULL)
+                        return -EINVAL;
+
+                /* no IID based configuration if no prefix and no data */
+                lowpan_uip_ds6_set_addr_iid(ipaddr, lladdr);
+        }
+
+        pr_debug("(%s): uncompressing %d + %d => ", __func__, prefcount,
+                                                                postcount);
+        lowpan_raw_dump_inline(NULL, NULL, ipaddr->s6_addr, 16);
+
+        return 0;
+}
+
+static u8 lowpan_fetch_skb_u8(struct sk_buff *skb)
+{
+        u8 ret;
+
+        ret = skb->data[0];
+        skb_pull(skb, 1);
+
+        return ret;
+}
+
+static int lowpan_header_create(struct sk_buff *skb,
+                           struct net_device *dev,
+                           unsigned short type, const void *_daddr,
+                           const void *_saddr, unsigned len)
+{
+        u8 tmp, iphc0, iphc1, *hc06_ptr;
+        struct ipv6hdr *hdr;
+        const u8 *saddr = _saddr;
+        const u8 *daddr = _daddr;
+        u8 *head;
+        struct ieee802154_addr sa, da;
+
+        if (type != ETH_P_IPV6)
+                return 0;
+                /* TODO:
+                 * if this package isn't ipv6 one, where should it be routed?
+                 */
+        head = kzalloc(100, GFP_KERNEL);
+        if (head == NULL)
+                return -ENOMEM;
+
+        hdr = ipv6_hdr(skb);
+        hc06_ptr = head + 2;
+
+        pr_debug("(%s): IPv6 header dump:\n\tversion = %d\n\tlength  = %d\n"
+                 "\tnexthdr = 0x%02x\n\thop_lim = %d\n", __func__,
+                hdr->version, ntohs(hdr->payload_len), hdr->nexthdr,
+                hdr->hop_limit);
+
+        lowpan_raw_dump_table(__func__, "raw skb network header dump",
+                skb_network_header(skb), sizeof(struct ipv6hdr));
+
+        if (!saddr)
+                saddr = dev->dev_addr;
+
+        lowpan_raw_dump_inline(__func__, "saddr", (unsigned char *)saddr, 8);
+
+        /*
+         * As we copy some bit-length fields, in the IPHC encoding bytes,
+         * we sometimes use |=
+         * If the field is 0, and the current bit value in memory is 1,
+         * this does not work. We therefore reset the IPHC encoding here
+         */
+        iphc0 = LOWPAN_DISPATCH_IPHC;
+        iphc1 = 0;
+
+        /* TODO: context lookup */
+
+        lowpan_raw_dump_inline(__func__, "daddr", (unsigned char *)daddr, 8);
+
+        /*
+         * Traffic class, flow label
+         * If flow label is 0, compress it. If traffic class is 0, compress it
+         * We have to process both in the same time as the offset of traffic
+         * class depends on the presence of version and flow label
+         */
+
+        /* hc06 format of TC is ECN | DSCP , original one is DSCP | ECN */
+        tmp = (hdr->priority << 4) | (hdr->flow_lbl[0] >> 4);
+        tmp = ((tmp & 0x03) << 6) | (tmp >> 2);
+
+        if (((hdr->flow_lbl[0] & 0x0F) == 0) &&
+             (hdr->flow_lbl[1] == 0) && (hdr->flow_lbl[2] == 0)) {
+                /* flow label can be compressed */
+                iphc0 |= LOWPAN_IPHC_FL_C;
+                if ((hdr->priority == 0) &&
+                   ((hdr->flow_lbl[0] & 0xF0) == 0)) {
+                        /* compress (elide) all */
+                        iphc0 |= LOWPAN_IPHC_TC_C;
+                } else {
+                        /* compress only the flow label */
+                        *hc06_ptr = tmp;
+                        hc06_ptr += 1;
+                }
+        } else {
+                /* Flow label cannot be compressed */
+                if ((hdr->priority == 0) &&
+                   ((hdr->flow_lbl[0] & 0xF0) == 0)) {
+                        /* compress only traffic class */
+                        iphc0 |= LOWPAN_IPHC_TC_C;
+                        *hc06_ptr = (tmp & 0xc0) | (hdr->flow_lbl[0] & 0x0F);
+                        memcpy(hc06_ptr + 1, &hdr->flow_lbl[1], 2);
+                        hc06_ptr += 3;
+                } else {
+                        /* compress nothing */
+                        memcpy(hc06_ptr, &hdr, 4);
+                        /* replace the top byte with new ECN | DSCP format */
+                        *hc06_ptr = tmp;
+                        hc06_ptr += 4;
+                }
+        }
+
+        /* NOTE: payload length is always compressed */
+
+        /* Next Header is compress if UDP */
+        if (hdr->nexthdr == UIP_PROTO_UDP)
+                iphc0 |= LOWPAN_IPHC_NH_C;
+
+/* TODO: next header compression */
+
+        if ((iphc0 & LOWPAN_IPHC_NH_C) == 0) {
+                *hc06_ptr = hdr->nexthdr;
+                hc06_ptr += 1;
+        }
+
+        /*
+         * Hop limit
+         * if 1:   compress, encoding is 01
+         * if 64:  compress, encoding is 10
+         * if 255: compress, encoding is 11
+         * else do not compress
+         */
+        switch (hdr->hop_limit) {
+        case 1:
+                iphc0 |= LOWPAN_IPHC_TTL_1;
+                break;
+        case 64:
+                iphc0 |= LOWPAN_IPHC_TTL_64;
+                break;
+        case 255:
+                iphc0 |= LOWPAN_IPHC_TTL_255;
+                break;
+        default:
+                *hc06_ptr = hdr->hop_limit;
+                break;
+        }
+
+        /* source address compression */
+        if (is_addr_unspecified(&hdr->saddr)) {
+                pr_debug("(%s): source address is unspecified, setting SAC\n",
+                                                                __func__);
+                iphc1 |= LOWPAN_IPHC_SAC;
+        /* TODO: context lookup */
+        } else if (is_addr_link_local(&hdr->saddr)) {
+                pr_debug("(%s): source address is link-local\n", __func__);
+                iphc1 |= lowpan_compress_addr_64(&hc06_ptr,
+                                LOWPAN_IPHC_SAM_BIT, &hdr->saddr, saddr);
+        } else {
+                pr_debug("(%s): send the full source address\n", __func__);
+                memcpy(hc06_ptr, &hdr->saddr.s6_addr16[0], 16);
+                hc06_ptr += 16;
+        }
+
+        /* destination address compression */
+        if (is_addr_mcast(&hdr->daddr)) {
+                pr_debug("(%s): destination address is multicast", __func__);
+                iphc1 |= LOWPAN_IPHC_M;
+                if (lowpan_is_mcast_addr_compressable8(&hdr->daddr)) {
+                        pr_debug("compressed to 1 octet\n");
+                        iphc1 |= LOWPAN_IPHC_DAM_11;
+                        /* use last byte */
+                        *hc06_ptr = hdr->daddr.s6_addr[15];
+                        hc06_ptr += 1;
+                } else if (lowpan_is_mcast_addr_compressable32(&hdr->daddr)) {
+                        pr_debug("compressed to 4 octets\n");
+                        iphc1 |= LOWPAN_IPHC_DAM_10;
+                        /* second byte + the last three */
+                        *hc06_ptr = hdr->daddr.s6_addr[1];
+                        memcpy(hc06_ptr + 1, &hdr->daddr.s6_addr[13], 3);
+                        hc06_ptr += 4;
+                } else if (lowpan_is_mcast_addr_compressable48(&hdr->daddr)) {
+                        pr_debug("compressed to 6 octets\n");
+                        iphc1 |= LOWPAN_IPHC_DAM_01;
+                        /* second byte + the last five */
+                        *hc06_ptr = hdr->daddr.s6_addr[1];
+                        memcpy(hc06_ptr + 1, &hdr->daddr.s6_addr[11], 5);
+                        hc06_ptr += 6;
+                } else {
+                        pr_debug("using full address\n");
+                        iphc1 |= LOWPAN_IPHC_DAM_00;
+                        memcpy(hc06_ptr, &hdr->daddr.s6_addr[0], 16);
+                        hc06_ptr += 16;
+                }
+        } else {
+                pr_debug("(%s): destination address is unicast: ", __func__);
+                /* TODO: context lookup */
+                if (is_addr_link_local(&hdr->daddr)) {
+                        pr_debug("destination address is link-local\n");
+                        iphc1 |= lowpan_compress_addr_64(&hc06_ptr,
+                                LOWPAN_IPHC_DAM_BIT, &hdr->daddr, daddr);
+                } else {
+                        pr_debug("using full address\n");
+                        memcpy(hc06_ptr, &hdr->daddr.s6_addr16[0], 16);
+                        hc06_ptr += 16;
+                }
+        }
+
+        /* TODO: UDP header compression */
+        /* TODO: Next Header compression */
+
+        head[0] = iphc0;
+        head[1] = iphc1;
+
+        skb_pull(skb, sizeof(struct ipv6hdr));
+        memcpy(skb_push(skb, hc06_ptr - head), head, hc06_ptr - head);
+
+        kfree(head);
+
+        lowpan_raw_dump_table(__func__, "raw skb data dump", skb->data,
+                                skb->len);
+
+        /*
+         * NOTE1: I'm still unsure about the fact that compression and WPAN
+         * header are created here and not later in the xmit. So wait for
+         * an opinion of net maintainers.
+         */
+        /*
+         * NOTE2: to be absolutely correct, we must derive PANid information
+         * from MAC subif of the 'dev' and 'real_dev' network devices, but
+         * this isn't implemented in mainline yet, so currently we assign 0xff
+         */
+        {
+                /* prepare wpan address data */
+                sa.addr_type = IEEE802154_ADDR_LONG;
+                sa.pan_id = 0xff;
+
+                da.addr_type = IEEE802154_ADDR_LONG;
+                da.pan_id = 0xff;
+
+                memcpy(&(da.hwaddr), daddr, 8);
+                memcpy(&(sa.hwaddr), saddr, 8);
+
+                mac_cb(skb)->flags = IEEE802154_FC_TYPE_DATA;
+                return dev_hard_header(skb, lowpan_dev_info(dev)->real_dev,
+                                type, (void *)&da, (void *)&sa, skb->len);
+        }
+}
+
+static int lowpan_skb_deliver(struct sk_buff *skb, struct ipv6hdr *hdr)
+{
+        struct sk_buff *new;
+        struct lowpan_dev_record *entry;
+        int stat = NET_RX_SUCCESS;
+
+        new = skb_copy_expand(skb, sizeof(struct ipv6hdr), skb_tailroom(skb),
+                                                                GFP_ATOMIC);
+        kfree_skb(skb);
+
+        if (!new)
+                return -ENOMEM;
+
+        skb_push(new, sizeof(struct ipv6hdr));
+        skb_reset_network_header(new);
+        skb_copy_to_linear_data(new, hdr, sizeof(struct ipv6hdr));
+
+        new->protocol = htons(ETH_P_IPV6);
+        new->pkt_type = PACKET_HOST;
+
+        rcu_read_lock();
+        list_for_each_entry_rcu(entry, &lowpan_devices, list)
+                if (lowpan_dev_info(entry->ldev)->real_dev == new->dev) {
+                        skb = skb_copy(new, GFP_ATOMIC);
+                        if (!skb) {
+                                stat = -ENOMEM;
+                                break;
+                        }
+
+                        skb->dev = entry->ldev;
+                        stat = netif_rx(skb);
+                }
+        rcu_read_unlock();
+
+        kfree_skb(new);
+
+        return stat;
+}
+
+static int
+lowpan_process_data(struct sk_buff *skb)
+{
+        struct ipv6hdr hdr;
+        u8 tmp, iphc0, iphc1, num_context = 0;
+        u8 *_saddr, *_daddr;
+        int err;
+
+        lowpan_raw_dump_table(__func__, "raw skb data dump", skb->data,
+                                skb->len);
+        /* at least two bytes will be used for the encoding */
+        if (skb->len < 2)
+                goto drop;
+        iphc0 = lowpan_fetch_skb_u8(skb);
+        iphc1 = lowpan_fetch_skb_u8(skb);
+
+        _saddr = mac_cb(skb)->sa.hwaddr;
+        _daddr = mac_cb(skb)->da.hwaddr;
+
+        pr_debug("(%s): iphc0 = %02x, iphc1 = %02x\n", __func__, iphc0, iphc1);
+
+        /* another if the CID flag is set */
+        if (iphc1 & LOWPAN_IPHC_CID) {
+                pr_debug("(%s): CID flag is set, increase header with one\n",
+                                                                __func__);
+                if (!skb->len)
+                        goto drop;
+                num_context = lowpan_fetch_skb_u8(skb);
+        }
+
+        hdr.version = 6;
+
+        /* Traffic Class and Flow Label */
+        switch ((iphc0 & LOWPAN_IPHC_TF) >> 3) {
+        /*
+         * Traffic Class and FLow Label carried in-line
+         * ECN + DSCP + 4-bit Pad + Flow Label (4 bytes)
+         */
+        case 0: /* 00b */
+                if (!skb->len)
+                        goto drop;
+                tmp = lowpan_fetch_skb_u8(skb);
+                memcpy(&hdr.flow_lbl, &skb->data[0], 3);
+                skb_pull(skb, 3);
+                hdr.priority = ((tmp >> 2) & 0x0f);
+                hdr.flow_lbl[0] = ((tmp >> 2) & 0x30) | (tmp << 6) |
+                                        (hdr.flow_lbl[0] & 0x0f);
+                break;
+        /*
+         * Traffic class carried in-line
+         * ECN + DSCP (1 byte), Flow Label is elided
+         */
+        case 1: /* 10b */
+                if (!skb->len)
+                        goto drop;
+                tmp = lowpan_fetch_skb_u8(skb);
+                hdr.priority = ((tmp >> 2) & 0x0f);
+                hdr.flow_lbl[0] = ((tmp << 6) & 0xC0) | ((tmp >> 2) & 0x30);
+                hdr.flow_lbl[1] = 0;
+                hdr.flow_lbl[2] = 0;
+                break;
+        /*
+         * Flow Label carried in-line
+         * ECN + 2-bit Pad + Flow Label (3 bytes), DSCP is elided
+         */
+        case 2: /* 01b */
+                if (!skb->len)
+                        goto drop;
+                tmp = lowpan_fetch_skb_u8(skb);
+                hdr.flow_lbl[0] = (skb->data[0] & 0x0F) | ((tmp >> 2) & 0x30);
+                memcpy(&hdr.flow_lbl[1], &skb->data[0], 2);
+                skb_pull(skb, 2);
+                break;
+        /* Traffic Class and Flow Label are elided */
+        case 3: /* 11b */
+                hdr.priority = 0;
+                hdr.flow_lbl[0] = 0;
+                hdr.flow_lbl[1] = 0;
+                hdr.flow_lbl[2] = 0;
+                break;
+        default:
+                break;
+        }
+
+        /* Next Header */
+        if ((iphc0 & LOWPAN_IPHC_NH_C) == 0) {
+                /* Next header is carried inline */
+                if (!skb->len)
+                        goto drop;
+                hdr.nexthdr = lowpan_fetch_skb_u8(skb);
+                pr_debug("(%s): NH flag is set, next header is carried "
+                         "inline: %02x\n", __func__, hdr.nexthdr);
+        }
+
+        /* Hop Limit */
+        if ((iphc0 & 0x03) != LOWPAN_IPHC_TTL_I)
+                hdr.hop_limit = lowpan_ttl_values[iphc0 & 0x03];
+        else {
+                if (!skb->len)
+                        goto drop;
+                hdr.hop_limit = lowpan_fetch_skb_u8(skb);
+        }
+
+        /* Extract SAM to the tmp variable */
+        tmp = ((iphc1 & LOWPAN_IPHC_SAM) >> LOWPAN_IPHC_SAM_BIT) & 0x03;
+
+        /* Source address uncompression */
+        pr_debug("(%s): source address stateless compression\n", __func__);
+        err = lowpan_uncompress_addr(skb, &hdr.saddr, lowpan_llprefix,
+                                lowpan_unc_llconf[tmp], skb->data);
+        if (err)
+                goto drop;
+
+        /* Extract DAM to the tmp variable */
+        tmp = ((iphc1 & LOWPAN_IPHC_DAM_11) >> LOWPAN_IPHC_DAM_BIT) & 0x03;
+
+        /* check for Multicast Compression */
+        if (iphc1 & LOWPAN_IPHC_M) {
+                if (iphc1 & LOWPAN_IPHC_DAC) {
+                        pr_debug("(%s): destination address context-based "
+                                 "multicast compression\n", __func__);
+                        /* TODO: implement this */
+                } else {
+                        u8 prefix[] = {0xff, 0x02};
+
+                        pr_debug("(%s): destination address non-context-based"
+                                 " multicast compression\n", __func__);
+                        if (0 < tmp && tmp < 3) {
+                                if (!skb->len)
+                                        goto drop;
+                                else
+                                        prefix[1] = lowpan_fetch_skb_u8(skb);
+                        }
+
+                        err = lowpan_uncompress_addr(skb, &hdr.daddr, prefix,
+                                        lowpan_unc_mxconf[tmp], NULL);
+                        if (err)
+                                goto drop;
+                }
+        } else {
+                pr_debug("(%s): destination address stateless compression\n",
+                                                                __func__);
+                err = lowpan_uncompress_addr(skb, &hdr.daddr, lowpan_llprefix,
+                                lowpan_unc_llconf[tmp], skb->data);
+                if (err)
+                        goto drop;
+        }
+
+        /* TODO: UDP header parse */
+
+        /* Not fragmented package */
+        hdr.payload_len = htons(skb->len);
+
+        pr_debug("(%s): skb headroom size = %d, data length = %d\n", __func__,
+                                                skb_headroom(skb), skb->len);
+
+        pr_debug("(%s): IPv6 header dump:\n\tversion = %d\n\tlength  = %d\n\t"
+                 "nexthdr = 0x%02x\n\thop_lim = %d\n", __func__, hdr.version,
+                 ntohs(hdr.payload_len), hdr.nexthdr, hdr.hop_limit);
+
+        lowpan_raw_dump_table(__func__, "raw header dump", (u8 *)&hdr,
+                                                        sizeof(hdr));
+        return lowpan_skb_deliver(skb, &hdr);
+drop:
+        kfree_skb(skb);
+        return -EINVAL;
+}
+
+static int lowpan_set_address(struct net_device *dev, void *p)
+{
+        struct sockaddr *sa = p;
+
+        if (netif_running(dev))
+                return -EBUSY;
+
+        /* TODO: validate addr */
+        memcpy(dev->dev_addr, sa->sa_data, dev->addr_len);
+
+        return 0;
+}
+
+static netdev_tx_t lowpan_xmit(struct sk_buff *skb, struct net_device *dev)
+{
+        int err = 0;
+
+        pr_debug("(%s): package xmit\n", __func__);
+
+        skb->dev = lowpan_dev_info(dev)->real_dev;
+        if (skb->dev == NULL) {
+                pr_debug("(%s) ERROR: no real wpan device found\n", __func__);
+                dev_kfree_skb(skb);
+        } else
+                err = dev_queue_xmit(skb);
+
+        return (err < 0 ? NETDEV_TX_BUSY : NETDEV_TX_OK);
+}
+
+static void lowpan_dev_free(struct net_device *dev)
+{
+        dev_put(lowpan_dev_info(dev)->real_dev);
+        free_netdev(dev);
+}
+
+static struct header_ops lowpan_header_ops = {
+        .create = lowpan_header_create,
+};
+
+static const struct net_device_ops lowpan_netdev_ops = {
+        .ndo_start_xmit         = lowpan_xmit,
+        .ndo_set_mac_address    = lowpan_set_address,
+};
+
+static void lowpan_setup(struct net_device *dev)
+{
+        pr_debug("(%s)\n", __func__);
+
+        dev->addr_len           = IEEE802154_ADDR_LEN;
+        memset(dev->broadcast, 0xff, IEEE802154_ADDR_LEN);
+        dev->type               = ARPHRD_IEEE802154;
+        dev->features           = NETIF_F_NO_CSUM;
+        /* Frame Control + Sequence Number + Address fields + Security Header */
+        dev->hard_header_len    = 2 + 1 + 20 + 14;
+        dev->needed_tailroom    = 2; /* FCS */
+        dev->mtu                = 1281;
+        dev->tx_queue_len       = 0;
+        dev->flags              = IFF_NOARP | IFF_BROADCAST;
+        dev->watchdog_timeo     = 0;
+
+        dev->netdev_ops         = &lowpan_netdev_ops;
+        dev->header_ops         = &lowpan_header_ops;
+        dev->destructor         = lowpan_dev_free;
+}
+
+static int lowpan_validate(struct nlattr *tb[], struct nlattr *data[])
+{
+        pr_debug("(%s)\n", __func__);
+
+        if (tb[IFLA_ADDRESS]) {
+                if (nla_len(tb[IFLA_ADDRESS]) != IEEE802154_ADDR_LEN)
+                        return -EINVAL;
+        }
+        return 0;
+}
+
+static int lowpan_rcv(struct sk_buff *skb, struct net_device *dev,
+        struct packet_type *pt, struct net_device *orig_dev)
+{
+        if (!netif_running(dev))
+                goto drop;
+
+        if (dev->type != ARPHRD_IEEE802154)
+                goto drop;
+
+        /* check that it's our buffer */
+        if ((skb->data[0] & 0xe0) == 0x60)
+                lowpan_process_data(skb);
+
+        return NET_RX_SUCCESS;
+
+drop:
+        kfree_skb(skb);
+        return NET_RX_DROP;
+}
+
+static int lowpan_newlink(struct net *src_net, struct net_device *dev,
+                          struct nlattr *tb[], struct nlattr *data[])
+{
+        struct net_device *real_dev;
+        struct lowpan_dev_record *entry;
+
+        pr_debug("(%s)\n", __func__);
+
+        if (!tb[IFLA_LINK])
+                return -EINVAL;
+        /* find and hold real wpan device */
+        real_dev = dev_get_by_index(src_net, nla_get_u32(tb[IFLA_LINK]));
+        if (!real_dev)
+                return -ENODEV;
+
+        lowpan_dev_info(dev)->real_dev = real_dev;
+        mutex_init(&lowpan_dev_info(dev)->dev_list_mtx);
+
+        entry = kzalloc(sizeof(struct lowpan_dev_record), GFP_KERNEL);
+        if (!entry) {
+                dev_put(real_dev);
+                lowpan_dev_info(dev)->real_dev = NULL;
+                return -ENOMEM;
+        }
+
+        entry->ldev = dev;
+
+        mutex_lock(&lowpan_dev_info(dev)->dev_list_mtx);
+        INIT_LIST_HEAD(&entry->list);
+        list_add_tail(&entry->list, &lowpan_devices);
+        mutex_unlock(&lowpan_dev_info(dev)->dev_list_mtx);
+
+        register_netdevice(dev);
+
+        return 0;
+}
+
+static void lowpan_dellink(struct net_device *dev, struct list_head *head)
+{
+        struct lowpan_dev_info *lowpan_dev = lowpan_dev_info(dev);
+        struct net_device *real_dev = lowpan_dev->real_dev;
+        struct lowpan_dev_record *entry;
+        struct lowpan_dev_record *tmp;
+
+        ASSERT_RTNL();
+
+        mutex_lock(&lowpan_dev_info(dev)->dev_list_mtx);
+        list_for_each_entry_safe(entry, tmp, &lowpan_devices, list) {
+                if (entry->ldev == dev) {
+                        list_del(&entry->list);
+                        kfree(entry);
+                }
+        }
+        mutex_unlock(&lowpan_dev_info(dev)->dev_list_mtx);
+
+        mutex_destroy(&lowpan_dev_info(dev)->dev_list_mtx);
+
+        unregister_netdevice_queue(dev, head);
+
+        dev_put(real_dev);
+}
+
+static struct rtnl_link_ops lowpan_link_ops __read_mostly = {
+        .kind           = "lowpan",
+        .priv_size      = sizeof(struct lowpan_dev_info),
+        .setup          = lowpan_setup,
+        .newlink        = lowpan_newlink,
+        .dellink        = lowpan_dellink,
+        .validate       = lowpan_validate,
+};
+
+static inline int __init lowpan_netlink_init(void)
+{
+        return rtnl_link_register(&lowpan_link_ops);
+}
+
+static inline void __init lowpan_netlink_fini(void)
+{
+        rtnl_link_unregister(&lowpan_link_ops);
+}
+
+static struct packet_type lowpan_packet_type = {
+        .type = __constant_htons(ETH_P_IEEE802154),
+        .func = lowpan_rcv,
+};
+
+static int __init lowpan_init_module(void)
+{
+        int err = 0;
+
+        pr_debug("(%s)\n", __func__);
+
+        err = lowpan_netlink_init();
+        if (err < 0)
+                goto out;
+
+        dev_add_pack(&lowpan_packet_type);
+out:
+        return err;
+}
+
+static void __exit lowpan_cleanup_module(void)
+{
+        pr_debug("(%s)\n", __func__);
+
+        lowpan_netlink_fini();
+
+        dev_remove_pack(&lowpan_packet_type);
+}
+
+module_init(lowpan_init_module);
+module_exit(lowpan_cleanup_module);
+MODULE_LICENSE("GPL");
+MODULE_ALIAS_RTNL_LINK("lowpan");
diff --git a/net/ieee802154/6lowpan.h b/net/ieee802154/6lowpan.h
new file mode 100644
index 000000000000..5d8cf80b930d
--- /dev/null
+++ b/net/ieee802154/6lowpan.h
@@ -0,0 +1,212 @@
+/*
+ * Copyright 2011, Siemens AG
+ * written by Alexander Smirnov <alex.bluesman.smirnov@gmail.com>
+ */
+
+/*
+ * Based on patches from Jon Smirl <jonsmirl@gmail.com>
+ * Copyright (c) 2011 Jon Smirl <jonsmirl@gmail.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2
+ * as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ */
+
+/* Jon's code is based on 6lowpan implementation for Contiki which is:
+ * Copyright (c) 2008, Swedish Institute of Computer Science.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of the Institute nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#ifndef __6LOWPAN_H__
+#define __6LOWPAN_H__
+
+/* need to know address length to manipulate with it */
+#define IEEE802154_ALEN         8
+
+#define UIP_802154_SHORTADDR_LEN        2  /* compressed ipv6 address length */
+#define UIP_IPH_LEN                     40 /* ipv6 fixed header size */
+#define UIP_PROTO_UDP                   17 /* ipv6 next header value for UDP */
+#define UIP_FRAGH_LEN                   8  /* ipv6 fragment header size */
+
+/*
+ * ipv6 address based on mac
+ * second bit-flip (Universe/Local) is done according RFC2464
+ */
+#define is_addr_mac_addr_based(a, m) \
+        ((((a)->s6_addr[8])  == (((m)[0]) ^ 0x02)) &&   \
+         (((a)->s6_addr[9])  == (m)[1]) &&              \
+         (((a)->s6_addr[10]) == (m)[2]) &&              \
+         (((a)->s6_addr[11]) == (m)[3]) &&              \
+         (((a)->s6_addr[12]) == (m)[4]) &&              \
+         (((a)->s6_addr[13]) == (m)[5]) &&              \
+         (((a)->s6_addr[14]) == (m)[6]) &&              \
+         (((a)->s6_addr[15]) == (m)[7]))
+
+/* ipv6 address is unspecified */
+#define is_addr_unspecified(a)          \
+        ((((a)->s6_addr32[0]) == 0) &&  \
+         (((a)->s6_addr32[1]) == 0) &&  \
+         (((a)->s6_addr32[2]) == 0) &&  \
+         (((a)->s6_addr32[3]) == 0))
+
+/* compare ipv6 addresses prefixes */
+#define ipaddr_prefixcmp(addr1, addr2, length) \
+        (memcmp(addr1, addr2, length >> 3) == 0)
+
+/* local link, i.e. FE80::/10 */
+#define is_addr_link_local(a) (((a)->s6_addr16[0]) == 0x80FE)
+
+/*
+ * check whether we can compress the IID to 16 bits,
+ * it's possible for unicast adresses with first 49 bits are zero only.
+ */
+#define lowpan_is_iid_16_bit_compressable(a)    \
+        ((((a)->s6_addr16[4]) == 0) &&          \
+         (((a)->s6_addr16[5]) == 0) &&          \
+         (((a)->s6_addr16[6]) == 0) &&          \
+         ((((a)->s6_addr[14]) & 0x80) == 0))
+
+/* multicast address */
+#define is_addr_mcast(a) (((a)->s6_addr[0]) == 0xFF)
+
+/* check whether the 112-bit gid of the multicast address is mappable to: */
+
+/* 9 bits, for FF02::1 (all nodes) and FF02::2 (all routers) addresses only. */
+#define lowpan_is_mcast_addr_compressable(a)    \
+        ((((a)->s6_addr16[1]) == 0) &&          \
+         (((a)->s6_addr16[2]) == 0) &&          \
+         (((a)->s6_addr16[3]) == 0) &&          \
+         (((a)->s6_addr16[4]) == 0) &&          \
+         (((a)->s6_addr16[5]) == 0) &&          \
+         (((a)->s6_addr16[6]) == 0) &&          \
+         (((a)->s6_addr[14])  == 0) &&          \
+         ((((a)->s6_addr[15]) == 1) || (((a)->s6_addr[15]) == 2)))
+
+/* 48 bits, FFXX::00XX:XXXX:XXXX */
+#define lowpan_is_mcast_addr_compressable48(a)  \
+        ((((a)->s6_addr16[1]) == 0) &&          \
+         (((a)->s6_addr16[2]) == 0) &&          \
+         (((a)->s6_addr16[3]) == 0) &&          \
+         (((a)->s6_addr16[4]) == 0) &&          \
+         (((a)->s6_addr[10]) == 0))
+
+/* 32 bits, FFXX::00XX:XXXX */
+#define lowpan_is_mcast_addr_compressable32(a)  \
+        ((((a)->s6_addr16[1]) == 0) &&          \
+         (((a)->s6_addr16[2]) == 0) &&          \
+         (((a)->s6_addr16[3]) == 0) &&          \
+         (((a)->s6_addr16[4]) == 0) &&          \
+         (((a)->s6_addr16[5]) == 0) &&          \
+         (((a)->s6_addr[12]) == 0))
+
+/* 8 bits, FF02::00XX */
+#define lowpan_is_mcast_addr_compressable8(a)   \
+        ((((a)->s6_addr[1])  == 2) &&           \
+         (((a)->s6_addr16[1]) == 0) &&          \
+         (((a)->s6_addr16[2]) == 0) &&          \
+         (((a)->s6_addr16[3]) == 0) &&          \
+         (((a)->s6_addr16[4]) == 0) &&          \
+         (((a)->s6_addr16[5]) == 0) &&          \
+         (((a)->s6_addr16[6]) == 0) &&          \
+         (((a)->s6_addr[14]) == 0))
+
+#define lowpan_is_addr_broadcast(a)     \
+        ((((a)[0]) == 0xFF) &&  \
+         (((a)[1]) == 0xFF) &&  \
+         (((a)[2]) == 0xFF) &&  \
+         (((a)[3]) == 0xFF) &&  \
+         (((a)[4]) == 0xFF) &&  \
+         (((a)[5]) == 0xFF) &&  \
+         (((a)[6]) == 0xFF) &&  \
+         (((a)[7]) == 0xFF))
+
+#define LOWPAN_DISPATCH_IPV6    0x41 /* 01000001 = 65 */
+#define LOWPAN_DISPATCH_HC1     0x42 /* 01000010 = 66 */
+#define LOWPAN_DISPATCH_IPHC    0x60 /* 011xxxxx = ... */
+#define LOWPAN_DISPATCH_FRAG1   0xc0 /* 11000xxx */
+#define LOWPAN_DISPATCH_FRAGN   0xe0 /* 11100xxx */
+
+/*
+ * Values of fields within the IPHC encoding first byte
+ * (C stands for compressed and I for inline)
+ */
+#define LOWPAN_IPHC_TF          0x18
+
+#define LOWPAN_IPHC_FL_C        0x10
+#define LOWPAN_IPHC_TC_C        0x08
+#define LOWPAN_IPHC_NH_C        0x04
+#define LOWPAN_IPHC_TTL_1       0x01
+#define LOWPAN_IPHC_TTL_64      0x02
+#define LOWPAN_IPHC_TTL_255     0x03
+#define LOWPAN_IPHC_TTL_I       0x00
+
+
+/* Values of fields within the IPHC encoding second byte */
+#define LOWPAN_IPHC_CID         0x80
+
+#define LOWPAN_IPHC_SAC         0x40
+#define LOWPAN_IPHC_SAM_00      0x00
+#define LOWPAN_IPHC_SAM_01      0x10
+#define LOWPAN_IPHC_SAM_10      0x20
+#define LOWPAN_IPHC_SAM         0x30
+
+#define LOWPAN_IPHC_SAM_BIT     4
+
+#define LOWPAN_IPHC_M           0x08
+#define LOWPAN_IPHC_DAC         0x04
+#define LOWPAN_IPHC_DAM_00      0x00
+#define LOWPAN_IPHC_DAM_01      0x01
+#define LOWPAN_IPHC_DAM_10      0x02
+#define LOWPAN_IPHC_DAM_11      0x03
+
+#define LOWPAN_IPHC_DAM_BIT     0
+/*
+ * LOWPAN_UDP encoding (works together with IPHC)
+ */
+#define LOWPAN_NHC_UDP_MASK             0xF8
+#define LOWPAN_NHC_UDP_ID               0xF0
+#define LOWPAN_NHC_UDP_CHECKSUMC        0x04
+#define LOWPAN_NHC_UDP_CHECKSUMI        0x00
+
+/* values for port compression, _with checksum_ ie bit 5 set to 0 */
+#define LOWPAN_NHC_UDP_CS_P_00  0xF0 /* all inline */
+#define LOWPAN_NHC_UDP_CS_P_01  0xF1 /* source 16bit inline,
+                                        dest = 0xF0 + 8 bit inline */
+#define LOWPAN_NHC_UDP_CS_P_10  0xF2 /* source = 0xF0 + 8bit inline,
+                                        dest = 16 bit inline */
+#define LOWPAN_NHC_UDP_CS_P_11  0xF3 /* source & dest = 0xF0B + 4bit inline */
+
+#endif /* __6LOWPAN_H__ */
diff --git a/net/ieee802154/Kconfig b/net/ieee802154/Kconfig
index 1c1de97d264a..7dee65052925 100644
--- a/net/ieee802154/Kconfig
+++ b/net/ieee802154/Kconfig
@@ -10,3 +10,9 @@ config IEEE802154
 
           Say Y here to compile LR-WPAN support into the kernel or say M to
           compile it as modules.
+
+config IEEE802154_6LOWPAN
+        tristate "6lowpan support over IEEE 802.15.4"
+        depends on IEEE802154 && IPV6
+        ---help---
+        IPv6 compression over IEEE 802.15.4.
diff --git a/net/ieee802154/Makefile b/net/ieee802154/Makefile
index 5761185f884e..d7716d64c6bb 100644
--- a/net/ieee802154/Makefile
+++ b/net/ieee802154/Makefile
@@ -1,3 +1,5 @@
-obj-$(CONFIG_IEEE802154) +=     ieee802154.o af_802154.o
-ieee802154-y            := netlink.o nl-mac.o nl-phy.o nl_policy.o wpan-class.o
-af_802154-y             := af_ieee802154.o raw.o dgram.o
+obj-$(CONFIG_IEEE802154) += ieee802154.o af_802154.o
+obj-$(CONFIG_IEEE802154_6LOWPAN) += 6lowpan.o
+
+ieee802154-y := netlink.o nl-mac.o nl-phy.o nl_policy.o wpan-class.o
+af_802154-y := af_ieee802154.o raw.o dgram.o
diff --git a/net/ieee802154/nl-mac.c b/net/ieee802154/nl-mac.c
index 71ee1108d4f8..adaf46214905 100644
--- a/net/ieee802154/nl-mac.c
+++ b/net/ieee802154/nl-mac.c
@@ -30,6 +30,7 @@
 #include <net/genetlink.h>
 #include <net/sock.h>
 #include <linux/nl802154.h>
+#include <linux/export.h>
 #include <net/af_ieee802154.h>
 #include <net/nl802154.h>
 #include <net/ieee802154.h>
diff --git a/net/ipv4/af_inet.c b/net/ipv4/af_inet.c
index dd2b9478ddd1..1b5096a9875a 100644
--- a/net/ipv4/af_inet.c
+++ b/net/ipv4/af_inet.c
@@ -893,7 +893,7 @@ int inet_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg)
 EXPORT_SYMBOL(inet_ioctl);
 
 #ifdef CONFIG_COMPAT
-int inet_compat_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg)
+static int inet_compat_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg)
 {
         struct sock *sk = sock->sk;
         int err = -ENOIOCTLCMD;
diff --git a/net/ipv4/cipso_ipv4.c b/net/ipv4/cipso_ipv4.c
index 2c2a98e402e7..86f3b885b4f3 100644
--- a/net/ipv4/cipso_ipv4.c
+++ b/net/ipv4/cipso_ipv4.c
@@ -476,7 +476,7 @@ int cipso_v4_doi_add(struct cipso_v4_doi *doi_def,
         doi = doi_def->doi;
         doi_type = doi_def->type;
 
-        if (doi_def == NULL || doi_def->doi == CIPSO_V4_DOI_UNKNOWN)
+        if (doi_def->doi == CIPSO_V4_DOI_UNKNOWN)
                 goto doi_add_return;
         for (iter = 0; iter < CIPSO_V4_TAG_MAXCNT; iter++) {
                 switch (doi_def->tags[iter]) {
diff --git a/net/ipv4/devinet.c b/net/ipv4/devinet.c
index bc19bd06dd00..c6b5092f29a1 100644
--- a/net/ipv4/devinet.c
+++ b/net/ipv4/devinet.c
@@ -258,7 +258,7 @@ static struct in_device *inetdev_init(struct net_device *dev)
                 ip_mc_up(in_dev);
 
         /* we can receive as soon as ip_ptr is set -- do this last */
-        rcu_assign_pointer(dev->ip_ptr, in_dev);
+        RCU_INIT_POINTER(dev->ip_ptr, in_dev);
 out:
         return in_dev;
 out_kfree:
@@ -291,7 +291,7 @@ static void inetdev_destroy(struct in_device *in_dev)
                 inet_free_ifa(ifa);
         }
 
-        rcu_assign_pointer(dev->ip_ptr, NULL);
+        RCU_INIT_POINTER(dev->ip_ptr, NULL);
 
         devinet_sysctl_unregister(in_dev);
         neigh_parms_release(&arp_tbl, in_dev->arp_parms);
@@ -1175,7 +1175,7 @@ static int inetdev_event(struct notifier_block *this, unsigned long event,
         switch (event) {
         case NETDEV_REGISTER:
                 printk(KERN_DEBUG "inetdev_event: bug\n");
-                rcu_assign_pointer(dev->ip_ptr, NULL);
+                RCU_INIT_POINTER(dev->ip_ptr, NULL);
                 break;
         case NETDEV_UP:
                 if (!inetdev_valid_mtu(dev->mtu))
diff --git a/net/ipv4/fib_rules.c b/net/ipv4/fib_rules.c
index a53bb1b5b118..46339ba7a2d3 100644
--- a/net/ipv4/fib_rules.c
+++ b/net/ipv4/fib_rules.c
@@ -26,6 +26,7 @@
 #include <linux/init.h>
 #include <linux/list.h>
 #include <linux/rcupdate.h>
+#include <linux/export.h>
 #include <net/ip.h>
 #include <net/route.h>
 #include <net/tcp.h>
diff --git a/net/ipv4/fib_trie.c b/net/ipv4/fib_trie.c
index de9e2978476f..37b671185c81 100644
--- a/net/ipv4/fib_trie.c
+++ b/net/ipv4/fib_trie.c
@@ -73,6 +73,7 @@
 #include <linux/list.h>
 #include <linux/slab.h>
 #include <linux/prefetch.h>
+#include <linux/export.h>
 #include <net/net_namespace.h>
 #include <net/ip.h>
 #include <net/protocol.h>
@@ -204,7 +205,7 @@ static inline struct tnode *node_parent_rcu(const struct rt_trie_node *node)
         return (struct tnode *)(parent & ~NODE_TYPE_MASK);
 }
 
-/* Same as rcu_assign_pointer
+/* Same as RCU_INIT_POINTER
  * but that macro() assumes that value is a pointer.
  */
 static inline void node_set_parent(struct rt_trie_node *node, struct tnode *ptr)
@@ -528,7 +529,7 @@ static void tnode_put_child_reorg(struct tnode *tn, int i, struct rt_trie_node *
         if (n)
                 node_set_parent(n, tn);
 
-        rcu_assign_pointer(tn->child[i], n);
+        RCU_INIT_POINTER(tn->child[i], n);
 }
 
 #define MAX_WORK 10
@@ -1014,7 +1015,7 @@ static void trie_rebalance(struct trie *t, struct tnode *tn)
 
                 tp = node_parent((struct rt_trie_node *) tn);
                 if (!tp)
-                        rcu_assign_pointer(t->trie, (struct rt_trie_node *)tn);
+                        RCU_INIT_POINTER(t->trie, (struct rt_trie_node *)tn);
 
                 tnode_free_flush();
                 if (!tp)
@@ -1026,7 +1027,7 @@ static void trie_rebalance(struct trie *t, struct tnode *tn)
         if (IS_TNODE(tn))
                 tn = (struct tnode *)resize(t, (struct tnode *)tn);
 
-        rcu_assign_pointer(t->trie, (struct rt_trie_node *)tn);
+        RCU_INIT_POINTER(t->trie, (struct rt_trie_node *)tn);
         tnode_free_flush();
 }
 
@@ -1163,7 +1164,7 @@ static struct list_head *fib_insert_node(struct trie *t, u32 key, int plen)
                         put_child(t, (struct tnode *)tp, cindex,
                                   (struct rt_trie_node *)tn);
                 } else {
-                        rcu_assign_pointer(t->trie, (struct rt_trie_node *)tn);
+                        RCU_INIT_POINTER(t->trie, (struct rt_trie_node *)tn);
                         tp = tn;
                 }
         }
@@ -1621,7 +1622,7 @@ static void trie_leaf_remove(struct trie *t, struct leaf *l)
                 put_child(t, (struct tnode *)tp, cindex, NULL);
                 trie_rebalance(t, tp);
         } else
-                rcu_assign_pointer(t->trie, NULL);
+                RCU_INIT_POINTER(t->trie, NULL);
 
         free_leaf(l);
 }
diff --git a/net/ipv4/gre.c b/net/ipv4/gre.c
index dbfc21de3479..8cb1ebb7cd74 100644
--- a/net/ipv4/gre.c
+++ b/net/ipv4/gre.c
@@ -34,7 +34,7 @@ int gre_add_protocol(const struct gre_protocol *proto, u8 version)
         if (gre_proto[version])
                 goto err_out_unlock;
 
-        rcu_assign_pointer(gre_proto[version], proto);
+        RCU_INIT_POINTER(gre_proto[version], proto);
         spin_unlock(&gre_proto_lock);
         return 0;
 
@@ -54,7 +54,7 @@ int gre_del_protocol(const struct gre_protocol *proto, u8 version)
         if (rcu_dereference_protected(gre_proto[version],
                         lockdep_is_held(&gre_proto_lock)) != proto)
                 goto err_out_unlock;
-        rcu_assign_pointer(gre_proto[version], NULL);
+        RCU_INIT_POINTER(gre_proto[version], NULL);
         spin_unlock(&gre_proto_lock);
         synchronize_rcu();
         return 0;
diff --git a/net/ipv4/icmp.c b/net/ipv4/icmp.c
index 23ef31baa1af..ab188ae12fd9 100644
--- a/net/ipv4/icmp.c
+++ b/net/ipv4/icmp.c
@@ -1152,10 +1152,9 @@ static int __net_init icmp_sk_init(struct net *net)
                 net->ipv4.icmp_sk[i] = sk;
 
                 /* Enough space for 2 64K ICMP packets, including
-                 * sk_buff struct overhead.
+                 * sk_buff/skb_shared_info struct overhead.
                  */
-                sk->sk_sndbuf =
-                        (2 * ((64 * 1024) + sizeof(struct sk_buff)));
+                sk->sk_sndbuf = 2 * SKB_TRUESIZE(64 * 1024);
 
                 /*
                  * Speedup sock_wfree()
diff --git a/net/ipv4/igmp.c b/net/ipv4/igmp.c
index d577199eabd5..c7472eff2d51 100644
--- a/net/ipv4/igmp.c
+++ b/net/ipv4/igmp.c
@@ -1009,7 +1009,7 @@ static void ip_mc_filter_add(struct in_device *in_dev, __be32 addr)
 
         /* Checking for IFF_MULTICAST here is WRONG-WRONG-WRONG.
            We will get multicast token leakage, when IFF_MULTICAST
-           is changed. This check should be done in dev->set_multicast_list
+           is changed. This check should be done in ndo_set_rx_mode
            routine. Something sort of:
            if (dev->mc_list && dev->flags&IFF_MULTICAST) { do it; }
            --ANK
@@ -1242,7 +1242,7 @@ void ip_mc_inc_group(struct in_device *in_dev, __be32 addr)
 
         im->next_rcu = in_dev->mc_list;
         in_dev->mc_count++;
-        rcu_assign_pointer(in_dev->mc_list, im);
+        RCU_INIT_POINTER(in_dev->mc_list, im);
 
 #ifdef CONFIG_IP_MULTICAST
         igmpv3_del_delrec(in_dev, im->multiaddr);
@@ -1813,7 +1813,7 @@ int ip_mc_join_group(struct sock *sk , struct ip_mreqn *imr)
         iml->next_rcu = inet->mc_list;
         iml->sflist = NULL;
         iml->sfmode = MCAST_EXCLUDE;
-        rcu_assign_pointer(inet->mc_list, iml);
+        RCU_INIT_POINTER(inet->mc_list, iml);
         ip_mc_inc_group(in_dev, addr);
         err = 0;
 done:
@@ -1835,7 +1835,7 @@ static int ip_mc_leave_src(struct sock *sk, struct ip_mc_socklist *iml,
         }
         err = ip_mc_del_src(in_dev, &iml->multi.imr_multiaddr.s_addr,
                         iml->sfmode, psf->sl_count, psf->sl_addr, 0);
-        rcu_assign_pointer(iml->sflist, NULL);
+        RCU_INIT_POINTER(iml->sflist, NULL);
         /* decrease mem now to avoid the memleak warning */
         atomic_sub(IP_SFLSIZE(psf->sl_max), &sk->sk_omem_alloc);
         kfree_rcu(psf, rcu);
@@ -2000,7 +2000,7 @@ int ip_mc_source(int add, int omode, struct sock *sk, struct
                         atomic_sub(IP_SFLSIZE(psl->sl_max), &sk->sk_omem_alloc);
                         kfree_rcu(psl, rcu);
                 }
-                rcu_assign_pointer(pmc->sflist, newpsl);
+                RCU_INIT_POINTER(pmc->sflist, newpsl);
                 psl = newpsl;
         }
         rv = 1; /* > 0 for insert logic below if sl_count is 0 */
@@ -2103,7 +2103,7 @@ int ip_mc_msfilter(struct sock *sk, struct ip_msfilter *msf, int ifindex)
         } else
                 (void) ip_mc_del_src(in_dev, &msf->imsf_multiaddr, pmc->sfmode,
                         0, NULL, 0);
-        rcu_assign_pointer(pmc->sflist, newpsl);
+        RCU_INIT_POINTER(pmc->sflist, newpsl);
         pmc->sfmode = msf->imsf_fmode;
         err = 0;
 done:
diff --git a/net/ipv4/inet_diag.c b/net/ipv4/inet_diag.c
index 389a2e6a17fd..f5e2bdaef949 100644
--- a/net/ipv4/inet_diag.c
+++ b/net/ipv4/inet_diag.c
@@ -108,6 +108,9 @@ static int inet_csk_diag_fill(struct sock *sk,
                        icsk->icsk_ca_ops->name);
         }
 
+        if ((ext & (1 << (INET_DIAG_TOS - 1))) && (sk->sk_family != AF_INET6))
+                RTA_PUT_U8(skb, INET_DIAG_TOS, inet->tos);
+
         r->idiag_family = sk->sk_family;
         r->idiag_state = sk->sk_state;
         r->idiag_timer = 0;
@@ -130,6 +133,8 @@ static int inet_csk_diag_fill(struct sock *sk,
                                &np->rcv_saddr);
                 ipv6_addr_copy((struct in6_addr *)r->id.idiag_dst,
                                &np->daddr);
+                if (ext & (1 << (INET_DIAG_TOS - 1)))
+                        RTA_PUT_U8(skb, INET_DIAG_TOS, np->tclass);
         }
 #endif
 
diff --git a/net/ipv4/inet_lro.c b/net/ipv4/inet_lro.c
index ef7ae6049a51..cc280a3f4f96 100644
--- a/net/ipv4/inet_lro.c
+++ b/net/ipv4/inet_lro.c
@@ -244,11 +244,11 @@ static void lro_add_frags(struct net_lro_desc *lro_desc,
         skb->truesize += truesize;
 
         skb_frags[0].page_offset += hlen;
-        skb_frags[0].size -= hlen;
+        skb_frag_size_sub(&skb_frags[0], hlen);
 
         while (tcp_data_len > 0) {
                 *(lro_desc->next_frag) = *skb_frags;
-                tcp_data_len -= skb_frags->size;
+                tcp_data_len -= skb_frag_size(skb_frags);
                 lro_desc->next_frag++;
                 skb_frags++;
                 skb_shinfo(skb)->nr_frags++;
@@ -400,14 +400,14 @@ static struct sk_buff *lro_gen_skb(struct net_lro_mgr *lro_mgr,
         skb_frags = skb_shinfo(skb)->frags;
         while (data_len > 0) {
                 *skb_frags = *frags;
-                data_len -= frags->size;
+                data_len -= skb_frag_size(frags);
                 skb_frags++;
                 frags++;
                 skb_shinfo(skb)->nr_frags++;
         }
 
         skb_shinfo(skb)->frags[0].page_offset += hdr_len;
-        skb_shinfo(skb)->frags[0].size -= hdr_len;
+        skb_frag_size_sub(&skb_shinfo(skb)->frags[0], hdr_len);
 
         skb->ip_summed = ip_summed;
         skb->csum = sum;
@@ -433,7 +433,7 @@ static struct sk_buff *__lro_proc_segment(struct net_lro_mgr *lro_mgr,
         if (!lro_mgr->get_frag_header ||
             lro_mgr->get_frag_header(frags, (void *)&mac_hdr, (void *)&iph,
                                      (void *)&tcph, &flags, priv)) {
-                mac_hdr = page_address(frags->page) + frags->page_offset;
+                mac_hdr = skb_frag_address(frags);
                 goto out1;
         }
 
diff --git a/net/ipv4/inet_timewait_sock.c b/net/ipv4/inet_timewait_sock.c
index 3c8dfa16614d..89168c6351ff 100644
--- a/net/ipv4/inet_timewait_sock.c
+++ b/net/ipv4/inet_timewait_sock.c
@@ -11,6 +11,7 @@
 #include <linux/kernel.h>
 #include <linux/kmemcheck.h>
 #include <linux/slab.h>
+#include <linux/module.h>
 #include <net/inet_hashtables.h>
 #include <net/inet_timewait_sock.h>
 #include <net/ip.h>
@@ -183,6 +184,7 @@ struct inet_timewait_sock *inet_twsk_alloc(const struct sock *sk, const int stat
                 tw->tw_daddr        = inet->inet_daddr;
                 tw->tw_rcv_saddr    = inet->inet_rcv_saddr;
                 tw->tw_bound_dev_if = sk->sk_bound_dev_if;
+                tw->tw_tos          = inet->tos;
                 tw->tw_num          = inet->inet_num;
                 tw->tw_state        = TCP_TIME_WAIT;
                 tw->tw_substate     = state;
diff --git a/net/ipv4/ip_fragment.c b/net/ipv4/ip_fragment.c
index 0e0ab98abc6f..fdaabf2f2b68 100644
--- a/net/ipv4/ip_fragment.c
+++ b/net/ipv4/ip_fragment.c
@@ -599,8 +599,8 @@ static int ip_frag_reasm(struct ipq *qp, struct sk_buff *prev,
                 head->next = clone;
                 skb_shinfo(clone)->frag_list = skb_shinfo(head)->frag_list;
                 skb_frag_list_init(head);
-                for (i=0; i<skb_shinfo(head)->nr_frags; i++)
-                        plen += skb_shinfo(head)->frags[i].size;
+                for (i = 0; i < skb_shinfo(head)->nr_frags; i++)
+                        plen += skb_frag_size(&skb_shinfo(head)->frags[i]);
                 clone->len = clone->data_len = head->data_len - plen;
                 head->data_len -= clone->len;
                 head->len -= clone->len;
@@ -682,6 +682,42 @@ int ip_defrag(struct sk_buff *skb, u32 user)
 }
 EXPORT_SYMBOL(ip_defrag);
 
+struct sk_buff *ip_check_defrag(struct sk_buff *skb, u32 user)
+{
+        const struct iphdr *iph;
+        u32 len;
+
+        if (skb->protocol != htons(ETH_P_IP))
+                return skb;
+
+        if (!pskb_may_pull(skb, sizeof(struct iphdr)))
+                return skb;
+
+        iph = ip_hdr(skb);
+        if (iph->ihl < 5 || iph->version != 4)
+                return skb;
+        if (!pskb_may_pull(skb, iph->ihl*4))
+                return skb;
+        iph = ip_hdr(skb);
+        len = ntohs(iph->tot_len);
+        if (skb->len < len || len < (iph->ihl * 4))
+                return skb;
+
+        if (ip_is_fragment(ip_hdr(skb))) {
+                skb = skb_share_check(skb, GFP_ATOMIC);
+                if (skb) {
+                        if (pskb_trim_rcsum(skb, len))
+                                return skb;
+                        memset(IPCB(skb), 0, sizeof(struct inet_skb_parm));
+                        if (ip_defrag(skb, user))
+                                return NULL;
+                        skb->rxhash = 0;
+                }
+        }
+        return skb;
+}
+EXPORT_SYMBOL(ip_check_defrag);
+
 #ifdef CONFIG_SYSCTL
 static int zero;
 
diff --git a/net/ipv4/ip_gre.c b/net/ipv4/ip_gre.c
index d7bb94c48345..d55110e93120 100644
--- a/net/ipv4/ip_gre.c
+++ b/net/ipv4/ip_gre.c
@@ -835,8 +835,6 @@ static netdev_tx_t ipgre_tunnel_xmit(struct sk_buff *skb, struct net_device *dev
         if (skb_headroom(skb) < max_headroom || skb_shared(skb)||
             (skb_cloned(skb) && !skb_clone_writable(skb, 0))) {
                 struct sk_buff *new_skb = skb_realloc_headroom(skb, max_headroom);
-                if (max_headroom > dev->needed_headroom)
-                        dev->needed_headroom = max_headroom;
                 if (!new_skb) {
                         ip_rt_put(rt);
                         dev->stats.tx_dropped++;
diff --git a/net/ipv4/ip_output.c b/net/ipv4/ip_output.c
index 8c6563361ab5..0bc95f3977d2 100644
--- a/net/ipv4/ip_output.c
+++ b/net/ipv4/ip_output.c
@@ -989,13 +989,13 @@ alloc_new_skb:
                         if (page && (left = PAGE_SIZE - off) > 0) {
                                 if (copy >= left)
                                         copy = left;
-                                if (page != frag->page) {
+                                if (page != skb_frag_page(frag)) {
                                         if (i == MAX_SKB_FRAGS) {
                                                 err = -EMSGSIZE;
                                                 goto error;
                                         }
-                                        get_page(page);
                                         skb_fill_page_desc(skb, i, page, off, 0);
+                                        skb_frag_ref(skb, i);
                                         frag = &skb_shinfo(skb)->frags[i];
                                 }
                         } else if (i < MAX_SKB_FRAGS) {
@@ -1015,12 +1015,13 @@ alloc_new_skb:
                                 err = -EMSGSIZE;
                                 goto error;
                         }
-                        if (getfrag(from, page_address(frag->page)+frag->page_offset+frag->size, offset, copy, skb->len, skb) < 0) {
+                        if (getfrag(from, skb_frag_address(frag)+skb_frag_size(frag),
+                                    offset, copy, skb->len, skb) < 0) {
                                 err = -EFAULT;
                                 goto error;
                         }
                         cork->off += copy;
-                        frag->size += copy;
+                        skb_frag_size_add(frag, copy);
                         skb->len += copy;
                         skb->data_len += copy;
                         skb->truesize += copy;
@@ -1229,7 +1230,7 @@ ssize_t	ip_append_page(struct sock *sk, struct flowi4 *fl4, struct page *page,
                 if (len > size)
                         len = size;
                 if (skb_can_coalesce(skb, i, page, offset)) {
-                        skb_shinfo(skb)->frags[i-1].size += len;
+                        skb_frag_size_add(&skb_shinfo(skb)->frags[i-1], len);
                 } else if (i < MAX_SKB_FRAGS) {
                         get_page(page);
                         skb_fill_page_desc(skb, i, page, offset, len);
@@ -1465,7 +1466,7 @@ static int ip_reply_glue_bits(void *dptr, char *to, int offset,
  *      structure to pass arguments.
  */
 void ip_send_reply(struct sock *sk, struct sk_buff *skb, __be32 daddr,
-                   struct ip_reply_arg *arg, unsigned int len)
+                   const struct ip_reply_arg *arg, unsigned int len)
 {
         struct inet_sock *inet = inet_sk(sk);
         struct ip_options_data replyopts;
@@ -1488,7 +1489,7 @@ void ip_send_reply(struct sock *sk, struct sk_buff *skb, __be32 daddr,
         }
 
         flowi4_init_output(&fl4, arg->bound_dev_if, 0,
-                           RT_TOS(ip_hdr(skb)->tos),
+                           RT_TOS(arg->tos),
                            RT_SCOPE_UNIVERSE, sk->sk_protocol,
                            ip_reply_arg_flowi_flags(arg),
                            daddr, rt->rt_spec_dst,
@@ -1505,7 +1506,7 @@ void ip_send_reply(struct sock *sk, struct sk_buff *skb, __be32 daddr,
            with locally disabled BH and that sk cannot be already spinlocked.
          */
         bh_lock_sock(sk);
-        inet->tos = ip_hdr(skb)->tos;
+        inet->tos = arg->tos;
         sk->sk_priority = skb->priority;
         sk->sk_protocol = ip_hdr(skb)->protocol;
         sk->sk_bound_dev_if = arg->bound_dev_if;
diff --git a/net/ipv4/ip_sockglue.c b/net/ipv4/ip_sockglue.c
index 8905e92f896a..09ff51bf16a4 100644
--- a/net/ipv4/ip_sockglue.c
+++ b/net/ipv4/ip_sockglue.c
@@ -33,6 +33,7 @@
 #include <linux/netfilter.h>
 #include <linux/route.h>
 #include <linux/mroute.h>
+#include <net/inet_ecn.h>
 #include <net/route.h>
 #include <net/xfrm.h>
 #include <net/compat.h>
@@ -578,8 +579,8 @@ static int do_ip_setsockopt(struct sock *sk, int level,
                 break;
         case IP_TOS:    /* This sets both TOS and Precedence */
                 if (sk->sk_type == SOCK_STREAM) {
-                        val &= ~3;
-                        val |= inet->tos & 3;
+                        val &= ~INET_ECN_MASK;
+                        val |= inet->tos & INET_ECN_MASK;
                 }
                 if (inet->tos != val) {
                         inet->tos = val;
@@ -961,7 +962,7 @@ mc_msf_out:
                 break;
 
         case IP_TRANSPARENT:
-                if (!capable(CAP_NET_ADMIN)) {
+                if (!!val && !capable(CAP_NET_RAW) && !capable(CAP_NET_ADMIN)) {
                         err = -EPERM;
                         break;
                 }
diff --git a/net/ipv4/ipconfig.c b/net/ipv4/ipconfig.c
index 472a8c4f1dc0..0da2afc97f32 100644
--- a/net/ipv4/ipconfig.c
+++ b/net/ipv4/ipconfig.c
@@ -54,6 +54,7 @@
 #include <linux/delay.h>
 #include <linux/nfs_fs.h>
 #include <linux/slab.h>
+#include <linux/export.h>
 #include <net/net_namespace.h>
 #include <net/arp.h>
 #include <net/ip.h>
diff --git a/net/ipv4/ipip.c b/net/ipv4/ipip.c
index 378b20b7ca6e..065effd8349a 100644
--- a/net/ipv4/ipip.c
+++ b/net/ipv4/ipip.c
@@ -231,7 +231,7 @@ static void ipip_tunnel_unlink(struct ipip_net *ipn, struct ip_tunnel *t)
              (iter = rtnl_dereference(*tp)) != NULL;
              tp = &iter->next) {
                 if (t == iter) {
-                        rcu_assign_pointer(*tp, t->next);
+                        RCU_INIT_POINTER(*tp, t->next);
                         break;
                 }
         }
@@ -241,8 +241,8 @@ static void ipip_tunnel_link(struct ipip_net *ipn, struct ip_tunnel *t)
 {
         struct ip_tunnel __rcu **tp = ipip_bucket(ipn, t);
 
-        rcu_assign_pointer(t->next, rtnl_dereference(*tp));
-        rcu_assign_pointer(*tp, t);
+        RCU_INIT_POINTER(t->next, rtnl_dereference(*tp));
+        RCU_INIT_POINTER(*tp, t);
 }
 
 static struct ip_tunnel * ipip_tunnel_locate(struct net *net,
@@ -301,7 +301,7 @@ static void ipip_tunnel_uninit(struct net_device *dev)
         struct ipip_net *ipn = net_generic(net, ipip_net_id);
 
         if (dev == ipn->fb_tunnel_dev)
-                rcu_assign_pointer(ipn->tunnels_wc[0], NULL);
+                RCU_INIT_POINTER(ipn->tunnels_wc[0], NULL);
         else
                 ipip_tunnel_unlink(ipn, netdev_priv(dev));
         dev_put(dev);
@@ -791,7 +791,7 @@ static int __net_init ipip_fb_tunnel_init(struct net_device *dev)
                 return -ENOMEM;
 
         dev_hold(dev);
-        rcu_assign_pointer(ipn->tunnels_wc[0], tunnel);
+        RCU_INIT_POINTER(ipn->tunnels_wc[0], tunnel);
         return 0;
 }
 
diff --git a/net/ipv4/ipmr.c b/net/ipv4/ipmr.c
index 58e879157976..76a7f07b38b6 100644
--- a/net/ipv4/ipmr.c
+++ b/net/ipv4/ipmr.c
@@ -61,6 +61,7 @@
 #include <linux/if_arp.h>
 #include <linux/netfilter_ipv4.h>
 #include <linux/compat.h>
+#include <linux/export.h>
 #include <net/ipip.h>
 #include <net/checksum.h>
 #include <net/netlink.h>
@@ -1176,7 +1177,7 @@ static void mrtsock_destruct(struct sock *sk)
         ipmr_for_each_table(mrt, net) {
                 if (sk == rtnl_dereference(mrt->mroute_sk)) {
                         IPV4_DEVCONF_ALL(net, MC_FORWARDING)--;
-                        rcu_assign_pointer(mrt->mroute_sk, NULL);
+                        RCU_INIT_POINTER(mrt->mroute_sk, NULL);
                         mroute_clean_tables(mrt);
                 }
         }
@@ -1203,7 +1204,7 @@ int ip_mroute_setsockopt(struct sock *sk, int optname, char __user *optval, unsi
                 return -ENOENT;
 
         if (optname != MRT_INIT) {
-                if (sk != rcu_dereference_raw(mrt->mroute_sk) &&
+                if (sk != rcu_access_pointer(mrt->mroute_sk) &&
                     !capable(CAP_NET_ADMIN))
                         return -EACCES;
         }
@@ -1224,13 +1225,13 @@ int ip_mroute_setsockopt(struct sock *sk, int optname, char __user *optval, unsi
 
                 ret = ip_ra_control(sk, 1, mrtsock_destruct);
                 if (ret == 0) {
-                        rcu_assign_pointer(mrt->mroute_sk, sk);
+                        RCU_INIT_POINTER(mrt->mroute_sk, sk);
                         IPV4_DEVCONF_ALL(net, MC_FORWARDING)++;
                 }
                 rtnl_unlock();
                 return ret;
         case MRT_DONE:
-                if (sk != rcu_dereference_raw(mrt->mroute_sk))
+                if (sk != rcu_access_pointer(mrt->mroute_sk))
                         return -EACCES;
                 return ip_ra_control(sk, 0, NULL);
         case MRT_ADD_VIF:
diff --git a/net/ipv4/netfilter.c b/net/ipv4/netfilter.c
index 929b27bdeb79..9899619ab9b8 100644
--- a/net/ipv4/netfilter.c
+++ b/net/ipv4/netfilter.c
@@ -5,6 +5,7 @@
 #include <linux/ip.h>
 #include <linux/skbuff.h>
 #include <linux/gfp.h>
+#include <linux/export.h>
 #include <net/route.h>
 #include <net/xfrm.h>
 #include <net/ip.h>
diff --git a/net/ipv4/netfilter/ipt_CLUSTERIP.c b/net/ipv4/netfilter/ipt_CLUSTERIP.c
index db8d22db425f..a639967eb727 100644
--- a/net/ipv4/netfilter/ipt_CLUSTERIP.c
+++ b/net/ipv4/netfilter/ipt_CLUSTERIP.c
@@ -395,7 +395,6 @@ static int clusterip_tg_check(const struct xt_tgchk_param *par)
                         config = clusterip_config_init(cipinfo,
                                                         e->ip.dst.s_addr, dev);
                         if (!config) {
-                                pr_info("cannot allocate config\n");
                                 dev_put(dev);
                                 return -ENOMEM;
                         }
diff --git a/net/ipv4/netfilter/ipt_ULOG.c b/net/ipv4/netfilter/ipt_ULOG.c
index 446e0f467a17..b5508151e547 100644
--- a/net/ipv4/netfilter/ipt_ULOG.c
+++ b/net/ipv4/netfilter/ipt_ULOG.c
@@ -135,10 +135,8 @@ static struct sk_buff *ulog_alloc_skb(unsigned int size)
          * due to slab allocator restrictions */
 
         n = max(size, nlbufsiz);
-        skb = alloc_skb(n, GFP_ATOMIC);
+        skb = alloc_skb(n, GFP_ATOMIC | __GFP_NOWARN);
         if (!skb) {
-                pr_debug("cannot alloc whole buffer %ub!\n", n);
-
                 if (n > size) {
                         /* try to allocate only as much as we need for
                          * current packet */
diff --git a/net/ipv4/netfilter/nf_conntrack_l3proto_ipv4_compat.c b/net/ipv4/netfilter/nf_conntrack_l3proto_ipv4_compat.c
index 5585980fce2e..9682b36df38c 100644
--- a/net/ipv4/netfilter/nf_conntrack_l3proto_ipv4_compat.c
+++ b/net/ipv4/netfilter/nf_conntrack_l3proto_ipv4_compat.c
@@ -21,6 +21,7 @@
 #include <net/netfilter/nf_conntrack_expect.h>
 #include <net/netfilter/nf_conntrack_acct.h>
 #include <linux/rculist_nulls.h>
+#include <linux/export.h>
 
 struct ct_iter_state {
         struct seq_net_private p;
diff --git a/net/ipv4/netfilter/nf_nat_amanda.c b/net/ipv4/netfilter/nf_nat_amanda.c
index 703f366fd235..7b22382ff0e9 100644
--- a/net/ipv4/netfilter/nf_nat_amanda.c
+++ b/net/ipv4/netfilter/nf_nat_amanda.c
@@ -70,14 +70,14 @@ static unsigned int help(struct sk_buff *skb,
 
 static void __exit nf_nat_amanda_fini(void)
 {
-        rcu_assign_pointer(nf_nat_amanda_hook, NULL);
+        RCU_INIT_POINTER(nf_nat_amanda_hook, NULL);
         synchronize_rcu();
 }
 
 static int __init nf_nat_amanda_init(void)
 {
         BUG_ON(nf_nat_amanda_hook != NULL);
-        rcu_assign_pointer(nf_nat_amanda_hook, help);
+        RCU_INIT_POINTER(nf_nat_amanda_hook, help);
         return 0;
 }
 
diff --git a/net/ipv4/netfilter/nf_nat_core.c b/net/ipv4/netfilter/nf_nat_core.c
index 3346de5d94d0..447bc5cfdc6c 100644
--- a/net/ipv4/netfilter/nf_nat_core.c
+++ b/net/ipv4/netfilter/nf_nat_core.c
@@ -514,7 +514,7 @@ int nf_nat_protocol_register(const struct nf_nat_protocol *proto)
                 ret = -EBUSY;
                 goto out;
         }
-        rcu_assign_pointer(nf_nat_protos[proto->protonum], proto);
+        RCU_INIT_POINTER(nf_nat_protos[proto->protonum], proto);
  out:
         spin_unlock_bh(&nf_nat_lock);
         return ret;
@@ -525,7 +525,7 @@ EXPORT_SYMBOL(nf_nat_protocol_register);
 void nf_nat_protocol_unregister(const struct nf_nat_protocol *proto)
 {
         spin_lock_bh(&nf_nat_lock);
-        rcu_assign_pointer(nf_nat_protos[proto->protonum],
+        RCU_INIT_POINTER(nf_nat_protos[proto->protonum],
                            &nf_nat_unknown_protocol);
         spin_unlock_bh(&nf_nat_lock);
         synchronize_rcu();
@@ -736,10 +736,10 @@ static int __init nf_nat_init(void)
         /* Sew in builtin protocols. */
         spin_lock_bh(&nf_nat_lock);
         for (i = 0; i < MAX_IP_NAT_PROTO; i++)
-                rcu_assign_pointer(nf_nat_protos[i], &nf_nat_unknown_protocol);
-        rcu_assign_pointer(nf_nat_protos[IPPROTO_TCP], &nf_nat_protocol_tcp);
-        rcu_assign_pointer(nf_nat_protos[IPPROTO_UDP], &nf_nat_protocol_udp);
-        rcu_assign_pointer(nf_nat_protos[IPPROTO_ICMP], &nf_nat_protocol_icmp);
+                RCU_INIT_POINTER(nf_nat_protos[i], &nf_nat_unknown_protocol);
+        RCU_INIT_POINTER(nf_nat_protos[IPPROTO_TCP], &nf_nat_protocol_tcp);
+        RCU_INIT_POINTER(nf_nat_protos[IPPROTO_UDP], &nf_nat_protocol_udp);
+        RCU_INIT_POINTER(nf_nat_protos[IPPROTO_ICMP], &nf_nat_protocol_icmp);
         spin_unlock_bh(&nf_nat_lock);
 
         /* Initialize fake conntrack so that NAT will skip it */
@@ -748,12 +748,12 @@ static int __init nf_nat_init(void)
         l3proto = nf_ct_l3proto_find_get((u_int16_t)AF_INET);
 
         BUG_ON(nf_nat_seq_adjust_hook != NULL);
-        rcu_assign_pointer(nf_nat_seq_adjust_hook, nf_nat_seq_adjust);
+        RCU_INIT_POINTER(nf_nat_seq_adjust_hook, nf_nat_seq_adjust);
         BUG_ON(nfnetlink_parse_nat_setup_hook != NULL);
-        rcu_assign_pointer(nfnetlink_parse_nat_setup_hook,
+        RCU_INIT_POINTER(nfnetlink_parse_nat_setup_hook,
                            nfnetlink_parse_nat_setup);
         BUG_ON(nf_ct_nat_offset != NULL);
-        rcu_assign_pointer(nf_ct_nat_offset, nf_nat_get_offset);
+        RCU_INIT_POINTER(nf_ct_nat_offset, nf_nat_get_offset);
         return 0;
 
  cleanup_extend:
@@ -766,9 +766,9 @@ static void __exit nf_nat_cleanup(void)
         unregister_pernet_subsys(&nf_nat_net_ops);
         nf_ct_l3proto_put(l3proto);
         nf_ct_extend_unregister(&nat_extend);
-        rcu_assign_pointer(nf_nat_seq_adjust_hook, NULL);
-        rcu_assign_pointer(nfnetlink_parse_nat_setup_hook, NULL);
-        rcu_assign_pointer(nf_ct_nat_offset, NULL);
+        RCU_INIT_POINTER(nf_nat_seq_adjust_hook, NULL);
+        RCU_INIT_POINTER(nfnetlink_parse_nat_setup_hook, NULL);
+        RCU_INIT_POINTER(nf_ct_nat_offset, NULL);
         synchronize_net();
 }
 
diff --git a/net/ipv4/netfilter/nf_nat_ftp.c b/net/ipv4/netfilter/nf_nat_ftp.c
index dc73abb3fe27..e462a957d080 100644
--- a/net/ipv4/netfilter/nf_nat_ftp.c
+++ b/net/ipv4/netfilter/nf_nat_ftp.c
@@ -113,14 +113,14 @@ out:
 
 static void __exit nf_nat_ftp_fini(void)
 {
-        rcu_assign_pointer(nf_nat_ftp_hook, NULL);
+        RCU_INIT_POINTER(nf_nat_ftp_hook, NULL);
         synchronize_rcu();
 }
 
 static int __init nf_nat_ftp_init(void)
 {
         BUG_ON(nf_nat_ftp_hook != NULL);
-        rcu_assign_pointer(nf_nat_ftp_hook, nf_nat_ftp);
+        RCU_INIT_POINTER(nf_nat_ftp_hook, nf_nat_ftp);
         return 0;
 }
 
diff --git a/net/ipv4/netfilter/nf_nat_h323.c b/net/ipv4/netfilter/nf_nat_h323.c
index 790f3160e012..b9a1136addbd 100644
--- a/net/ipv4/netfilter/nf_nat_h323.c
+++ b/net/ipv4/netfilter/nf_nat_h323.c
@@ -581,30 +581,30 @@ static int __init init(void)
         BUG_ON(nat_callforwarding_hook != NULL);
         BUG_ON(nat_q931_hook != NULL);
 
-        rcu_assign_pointer(set_h245_addr_hook, set_h245_addr);
-        rcu_assign_pointer(set_h225_addr_hook, set_h225_addr);
-        rcu_assign_pointer(set_sig_addr_hook, set_sig_addr);
-        rcu_assign_pointer(set_ras_addr_hook, set_ras_addr);
-        rcu_assign_pointer(nat_rtp_rtcp_hook, nat_rtp_rtcp);
-        rcu_assign_pointer(nat_t120_hook, nat_t120);
-        rcu_assign_pointer(nat_h245_hook, nat_h245);
-        rcu_assign_pointer(nat_callforwarding_hook, nat_callforwarding);
-        rcu_assign_pointer(nat_q931_hook, nat_q931);
+        RCU_INIT_POINTER(set_h245_addr_hook, set_h245_addr);
+        RCU_INIT_POINTER(set_h225_addr_hook, set_h225_addr);
+        RCU_INIT_POINTER(set_sig_addr_hook, set_sig_addr);
+        RCU_INIT_POINTER(set_ras_addr_hook, set_ras_addr);
+        RCU_INIT_POINTER(nat_rtp_rtcp_hook, nat_rtp_rtcp);
+        RCU_INIT_POINTER(nat_t120_hook, nat_t120);
+        RCU_INIT_POINTER(nat_h245_hook, nat_h245);
+        RCU_INIT_POINTER(nat_callforwarding_hook, nat_callforwarding);
+        RCU_INIT_POINTER(nat_q931_hook, nat_q931);
         return 0;
 }
 
 /****************************************************************************/
 static void __exit fini(void)
 {
-        rcu_assign_pointer(set_h245_addr_hook, NULL);
-        rcu_assign_pointer(set_h225_addr_hook, NULL);
-        rcu_assign_pointer(set_sig_addr_hook, NULL);
-        rcu_assign_pointer(set_ras_addr_hook, NULL);
-        rcu_assign_pointer(nat_rtp_rtcp_hook, NULL);
-        rcu_assign_pointer(nat_t120_hook, NULL);
-        rcu_assign_pointer(nat_h245_hook, NULL);
-        rcu_assign_pointer(nat_callforwarding_hook, NULL);
-        rcu_assign_pointer(nat_q931_hook, NULL);
+        RCU_INIT_POINTER(set_h245_addr_hook, NULL);
+        RCU_INIT_POINTER(set_h225_addr_hook, NULL);
+        RCU_INIT_POINTER(set_sig_addr_hook, NULL);
+        RCU_INIT_POINTER(set_ras_addr_hook, NULL);
+        RCU_INIT_POINTER(nat_rtp_rtcp_hook, NULL);
+        RCU_INIT_POINTER(nat_t120_hook, NULL);
+        RCU_INIT_POINTER(nat_h245_hook, NULL);
+        RCU_INIT_POINTER(nat_callforwarding_hook, NULL);
+        RCU_INIT_POINTER(nat_q931_hook, NULL);
         synchronize_rcu();
 }
 
diff --git a/net/ipv4/netfilter/nf_nat_irc.c b/net/ipv4/netfilter/nf_nat_irc.c
index 535e1a802356..979ae165f4ef 100644
--- a/net/ipv4/netfilter/nf_nat_irc.c
+++ b/net/ipv4/netfilter/nf_nat_irc.c
@@ -75,14 +75,14 @@ static unsigned int help(struct sk_buff *skb,
 
 static void __exit nf_nat_irc_fini(void)
 {
-        rcu_assign_pointer(nf_nat_irc_hook, NULL);
+        RCU_INIT_POINTER(nf_nat_irc_hook, NULL);
         synchronize_rcu();
 }
 
 static int __init nf_nat_irc_init(void)
 {
         BUG_ON(nf_nat_irc_hook != NULL);
-        rcu_assign_pointer(nf_nat_irc_hook, help);
+        RCU_INIT_POINTER(nf_nat_irc_hook, help);
         return 0;
 }
 
diff --git a/net/ipv4/netfilter/nf_nat_pptp.c b/net/ipv4/netfilter/nf_nat_pptp.c
index 4c060038d29f..3e8284ba46b8 100644
--- a/net/ipv4/netfilter/nf_nat_pptp.c
+++ b/net/ipv4/netfilter/nf_nat_pptp.c
@@ -282,25 +282,25 @@ static int __init nf_nat_helper_pptp_init(void)
         nf_nat_need_gre();
 
         BUG_ON(nf_nat_pptp_hook_outbound != NULL);
-        rcu_assign_pointer(nf_nat_pptp_hook_outbound, pptp_outbound_pkt);
+        RCU_INIT_POINTER(nf_nat_pptp_hook_outbound, pptp_outbound_pkt);
 
         BUG_ON(nf_nat_pptp_hook_inbound != NULL);
-        rcu_assign_pointer(nf_nat_pptp_hook_inbound, pptp_inbound_pkt);
+        RCU_INIT_POINTER(nf_nat_pptp_hook_inbound, pptp_inbound_pkt);
 
         BUG_ON(nf_nat_pptp_hook_exp_gre != NULL);
-        rcu_assign_pointer(nf_nat_pptp_hook_exp_gre, pptp_exp_gre);
+        RCU_INIT_POINTER(nf_nat_pptp_hook_exp_gre, pptp_exp_gre);
 
         BUG_ON(nf_nat_pptp_hook_expectfn != NULL);
-        rcu_assign_pointer(nf_nat_pptp_hook_expectfn, pptp_nat_expected);
+        RCU_INIT_POINTER(nf_nat_pptp_hook_expectfn, pptp_nat_expected);
         return 0;
 }
 
 static void __exit nf_nat_helper_pptp_fini(void)
 {
-        rcu_assign_pointer(nf_nat_pptp_hook_expectfn, NULL);
-        rcu_assign_pointer(nf_nat_pptp_hook_exp_gre, NULL);
-        rcu_assign_pointer(nf_nat_pptp_hook_inbound, NULL);
-        rcu_assign_pointer(nf_nat_pptp_hook_outbound, NULL);
+        RCU_INIT_POINTER(nf_nat_pptp_hook_expectfn, NULL);
+        RCU_INIT_POINTER(nf_nat_pptp_hook_exp_gre, NULL);
+        RCU_INIT_POINTER(nf_nat_pptp_hook_inbound, NULL);
+        RCU_INIT_POINTER(nf_nat_pptp_hook_outbound, NULL);
         synchronize_rcu();
 }
 
diff --git a/net/ipv4/netfilter/nf_nat_proto_common.c b/net/ipv4/netfilter/nf_nat_proto_common.c
index f52d41ea0690..a3d997618602 100644
--- a/net/ipv4/netfilter/nf_nat_proto_common.c
+++ b/net/ipv4/netfilter/nf_nat_proto_common.c
@@ -12,6 +12,7 @@
 #include <linux/ip.h>
 
 #include <linux/netfilter.h>
+#include <linux/export.h>
 #include <net/secure_seq.h>
 #include <net/netfilter/nf_nat.h>
 #include <net/netfilter/nf_nat_core.h>
diff --git a/net/ipv4/netfilter/nf_nat_proto_icmp.c b/net/ipv4/netfilter/nf_nat_proto_icmp.c
index 5744c3ec847c..9f4dc1235dc7 100644
--- a/net/ipv4/netfilter/nf_nat_proto_icmp.c
+++ b/net/ipv4/netfilter/nf_nat_proto_icmp.c
@@ -8,6 +8,7 @@
 
 #include <linux/types.h>
 #include <linux/init.h>
+#include <linux/export.h>
 #include <linux/ip.h>
 #include <linux/icmp.h>
 
diff --git a/net/ipv4/netfilter/nf_nat_proto_sctp.c b/net/ipv4/netfilter/nf_nat_proto_sctp.c
index 756331d42661..bd5a80a62a5b 100644
--- a/net/ipv4/netfilter/nf_nat_proto_sctp.c
+++ b/net/ipv4/netfilter/nf_nat_proto_sctp.c
@@ -10,6 +10,7 @@
 #include <linux/init.h>
 #include <linux/ip.h>
 #include <linux/sctp.h>
+#include <linux/module.h>
 #include <net/sctp/checksum.h>
 
 #include <net/netfilter/nf_nat_protocol.h>
diff --git a/net/ipv4/netfilter/nf_nat_proto_tcp.c b/net/ipv4/netfilter/nf_nat_proto_tcp.c
index aa460a595d5d..0d67bb80130f 100644
--- a/net/ipv4/netfilter/nf_nat_proto_tcp.c
+++ b/net/ipv4/netfilter/nf_nat_proto_tcp.c
@@ -8,6 +8,7 @@
 
 #include <linux/types.h>
 #include <linux/init.h>
+#include <linux/export.h>
 #include <linux/ip.h>
 #include <linux/tcp.h>
 
diff --git a/net/ipv4/netfilter/nf_nat_proto_udp.c b/net/ipv4/netfilter/nf_nat_proto_udp.c
index dfe65c7e2925..0b1b8601cba7 100644
--- a/net/ipv4/netfilter/nf_nat_proto_udp.c
+++ b/net/ipv4/netfilter/nf_nat_proto_udp.c
@@ -7,6 +7,7 @@
  */
 
 #include <linux/types.h>
+#include <linux/export.h>
 #include <linux/init.h>
 #include <linux/ip.h>
 #include <linux/udp.h>
diff --git a/net/ipv4/netfilter/nf_nat_proto_udplite.c b/net/ipv4/netfilter/nf_nat_proto_udplite.c
index 3cc8c8af39ef..f83ef23e2ab7 100644
--- a/net/ipv4/netfilter/nf_nat_proto_udplite.c
+++ b/net/ipv4/netfilter/nf_nat_proto_udplite.c
@@ -13,6 +13,7 @@
 #include <linux/udp.h>
 
 #include <linux/netfilter.h>
+#include <linux/module.h>
 #include <net/netfilter/nf_nat.h>
 #include <net/netfilter/nf_nat_protocol.h>
 
diff --git a/net/ipv4/netfilter/nf_nat_sip.c b/net/ipv4/netfilter/nf_nat_sip.c
index e40cf7816fdb..78844d9208f1 100644
--- a/net/ipv4/netfilter/nf_nat_sip.c
+++ b/net/ipv4/netfilter/nf_nat_sip.c
@@ -528,13 +528,13 @@ err1:
 
 static void __exit nf_nat_sip_fini(void)
 {
-        rcu_assign_pointer(nf_nat_sip_hook, NULL);
-        rcu_assign_pointer(nf_nat_sip_seq_adjust_hook, NULL);
-        rcu_assign_pointer(nf_nat_sip_expect_hook, NULL);
-        rcu_assign_pointer(nf_nat_sdp_addr_hook, NULL);
-        rcu_assign_pointer(nf_nat_sdp_port_hook, NULL);
-        rcu_assign_pointer(nf_nat_sdp_session_hook, NULL);
-        rcu_assign_pointer(nf_nat_sdp_media_hook, NULL);
+        RCU_INIT_POINTER(nf_nat_sip_hook, NULL);
+        RCU_INIT_POINTER(nf_nat_sip_seq_adjust_hook, NULL);
+        RCU_INIT_POINTER(nf_nat_sip_expect_hook, NULL);
+        RCU_INIT_POINTER(nf_nat_sdp_addr_hook, NULL);
+        RCU_INIT_POINTER(nf_nat_sdp_port_hook, NULL);
+        RCU_INIT_POINTER(nf_nat_sdp_session_hook, NULL);
+        RCU_INIT_POINTER(nf_nat_sdp_media_hook, NULL);
         synchronize_rcu();
 }
 
@@ -547,13 +547,13 @@ static int __init nf_nat_sip_init(void)
         BUG_ON(nf_nat_sdp_port_hook != NULL);
         BUG_ON(nf_nat_sdp_session_hook != NULL);
         BUG_ON(nf_nat_sdp_media_hook != NULL);
-        rcu_assign_pointer(nf_nat_sip_hook, ip_nat_sip);
-        rcu_assign_pointer(nf_nat_sip_seq_adjust_hook, ip_nat_sip_seq_adjust);
-        rcu_assign_pointer(nf_nat_sip_expect_hook, ip_nat_sip_expect);
-        rcu_assign_pointer(nf_nat_sdp_addr_hook, ip_nat_sdp_addr);
-        rcu_assign_pointer(nf_nat_sdp_port_hook, ip_nat_sdp_port);
-        rcu_assign_pointer(nf_nat_sdp_session_hook, ip_nat_sdp_session);
-        rcu_assign_pointer(nf_nat_sdp_media_hook, ip_nat_sdp_media);
+        RCU_INIT_POINTER(nf_nat_sip_hook, ip_nat_sip);
+        RCU_INIT_POINTER(nf_nat_sip_seq_adjust_hook, ip_nat_sip_seq_adjust);
+        RCU_INIT_POINTER(nf_nat_sip_expect_hook, ip_nat_sip_expect);
+        RCU_INIT_POINTER(nf_nat_sdp_addr_hook, ip_nat_sdp_addr);
+        RCU_INIT_POINTER(nf_nat_sdp_port_hook, ip_nat_sdp_port);
+        RCU_INIT_POINTER(nf_nat_sdp_session_hook, ip_nat_sdp_session);
+        RCU_INIT_POINTER(nf_nat_sdp_media_hook, ip_nat_sdp_media);
         return 0;
 }
 
diff --git a/net/ipv4/netfilter/nf_nat_snmp_basic.c b/net/ipv4/netfilter/nf_nat_snmp_basic.c
index 076b7c8c4aa4..2133c30a4a5f 100644
--- a/net/ipv4/netfilter/nf_nat_snmp_basic.c
+++ b/net/ipv4/netfilter/nf_nat_snmp_basic.c
@@ -400,11 +400,8 @@ static unsigned char asn1_octets_decode(struct asn1_ctx *ctx,
         *len = 0;
 
         *octets = kmalloc(eoc - ctx->pointer, GFP_ATOMIC);
-        if (*octets == NULL) {
-                if (net_ratelimit())
-                        pr_notice("OOM in bsalg (%d)\n", __LINE__);
+        if (*octets == NULL)
                 return 0;
-        }
 
         ptr = *octets;
         while (ctx->pointer < eoc) {
@@ -451,11 +448,8 @@ static unsigned char asn1_oid_decode(struct asn1_ctx *ctx,
                 return 0;
 
         *oid = kmalloc(size * sizeof(unsigned long), GFP_ATOMIC);
-        if (*oid == NULL) {
-                if (net_ratelimit())
-                        pr_notice("OOM in bsalg (%d)\n", __LINE__);
+        if (*oid == NULL)
                 return 0;
-        }
 
         optr = *oid;
 
@@ -728,8 +722,6 @@ static unsigned char snmp_object_decode(struct asn1_ctx *ctx,
                 *obj = kmalloc(sizeof(struct snmp_object) + len, GFP_ATOMIC);
                 if (*obj == NULL) {
                         kfree(id);
-                        if (net_ratelimit())
-                                pr_notice("OOM in bsalg (%d)\n", __LINE__);
                         return 0;
                 }
                 (*obj)->syntax.l[0] = l;
@@ -744,8 +736,6 @@ static unsigned char snmp_object_decode(struct asn1_ctx *ctx,
                 if (*obj == NULL) {
                         kfree(p);
                         kfree(id);
-                        if (net_ratelimit())
-                                pr_notice("OOM in bsalg (%d)\n", __LINE__);
                         return 0;
                 }
                 memcpy((*obj)->syntax.c, p, len);
@@ -759,8 +749,6 @@ static unsigned char snmp_object_decode(struct asn1_ctx *ctx,
                 *obj = kmalloc(sizeof(struct snmp_object), GFP_ATOMIC);
                 if (*obj == NULL) {
                         kfree(id);
-                        if (net_ratelimit())
-                                pr_notice("OOM in bsalg (%d)\n", __LINE__);
                         return 0;
                 }
                 if (!asn1_null_decode(ctx, end)) {
@@ -780,8 +768,6 @@ static unsigned char snmp_object_decode(struct asn1_ctx *ctx,
                 if (*obj == NULL) {
                         kfree(lp);
                         kfree(id);
-                        if (net_ratelimit())
-                                pr_notice("OOM in bsalg (%d)\n", __LINE__);
                         return 0;
                 }
                 memcpy((*obj)->syntax.ul, lp, len);
@@ -801,8 +787,6 @@ static unsigned char snmp_object_decode(struct asn1_ctx *ctx,
                 if (*obj == NULL) {
                         kfree(p);
                         kfree(id);
-                        if (net_ratelimit())
-                                pr_notice("OOM in bsalg (%d)\n", __LINE__);
                         return 0;
                 }
                 memcpy((*obj)->syntax.uc, p, len);
@@ -819,8 +803,6 @@ static unsigned char snmp_object_decode(struct asn1_ctx *ctx,
                 *obj = kmalloc(sizeof(struct snmp_object) + len, GFP_ATOMIC);
                 if (*obj == NULL) {
                         kfree(id);
-                        if (net_ratelimit())
-                                pr_notice("OOM in bsalg (%d)\n", __LINE__);
                         return 0;
                 }
                 (*obj)->syntax.ul[0] = ul;
@@ -1310,7 +1292,7 @@ static int __init nf_nat_snmp_basic_init(void)
         int ret = 0;
 
         BUG_ON(nf_nat_snmp_hook != NULL);
-        rcu_assign_pointer(nf_nat_snmp_hook, help);
+        RCU_INIT_POINTER(nf_nat_snmp_hook, help);
 
         ret = nf_conntrack_helper_register(&snmp_trap_helper);
         if (ret < 0) {
@@ -1322,7 +1304,7 @@ static int __init nf_nat_snmp_basic_init(void)
 
 static void __exit nf_nat_snmp_basic_fini(void)
 {
-        rcu_assign_pointer(nf_nat_snmp_hook, NULL);
+        RCU_INIT_POINTER(nf_nat_snmp_hook, NULL);
         nf_conntrack_helper_unregister(&snmp_trap_helper);
 }
 
diff --git a/net/ipv4/netfilter/nf_nat_standalone.c b/net/ipv4/netfilter/nf_nat_standalone.c
index a6e606e84820..92900482edea 100644
--- a/net/ipv4/netfilter/nf_nat_standalone.c
+++ b/net/ipv4/netfilter/nf_nat_standalone.c
@@ -284,7 +284,7 @@ static int __init nf_nat_standalone_init(void)
 
 #ifdef CONFIG_XFRM
         BUG_ON(ip_nat_decode_session != NULL);
-        rcu_assign_pointer(ip_nat_decode_session, nat_decode_session);
+        RCU_INIT_POINTER(ip_nat_decode_session, nat_decode_session);
 #endif
         ret = nf_nat_rule_init();
         if (ret < 0) {
@@ -302,7 +302,7 @@ static int __init nf_nat_standalone_init(void)
         nf_nat_rule_cleanup();
  cleanup_decode_session:
 #ifdef CONFIG_XFRM
-        rcu_assign_pointer(ip_nat_decode_session, NULL);
+        RCU_INIT_POINTER(ip_nat_decode_session, NULL);
         synchronize_net();
 #endif
         return ret;
@@ -313,7 +313,7 @@ static void __exit nf_nat_standalone_fini(void)
         nf_unregister_hooks(nf_nat_ops, ARRAY_SIZE(nf_nat_ops));
         nf_nat_rule_cleanup();
 #ifdef CONFIG_XFRM
-        rcu_assign_pointer(ip_nat_decode_session, NULL);
+        RCU_INIT_POINTER(ip_nat_decode_session, NULL);
         synchronize_net();
 #endif
         /* Conntrack caches are unregistered in nf_conntrack_cleanup */
diff --git a/net/ipv4/netfilter/nf_nat_tftp.c b/net/ipv4/netfilter/nf_nat_tftp.c
index 7274a43c7a12..a2901bf829c0 100644
--- a/net/ipv4/netfilter/nf_nat_tftp.c
+++ b/net/ipv4/netfilter/nf_nat_tftp.c
@@ -36,14 +36,14 @@ static unsigned int help(struct sk_buff *skb,
 
 static void __exit nf_nat_tftp_fini(void)
 {
-        rcu_assign_pointer(nf_nat_tftp_hook, NULL);
+        RCU_INIT_POINTER(nf_nat_tftp_hook, NULL);
         synchronize_rcu();
 }
 
 static int __init nf_nat_tftp_init(void)
 {
         BUG_ON(nf_nat_tftp_hook != NULL);
-        rcu_assign_pointer(nf_nat_tftp_hook, help);
+        RCU_INIT_POINTER(nf_nat_tftp_hook, help);
         return 0;
 }
 
diff --git a/net/ipv4/ping.c b/net/ipv4/ping.c
index 39b403f854c6..a06f73fdb3c0 100644
--- a/net/ipv4/ping.c
+++ b/net/ipv4/ping.c
@@ -39,6 +39,7 @@
 #include <net/protocol.h>
 #include <linux/skbuff.h>
 #include <linux/proc_fs.h>
+#include <linux/export.h>
 #include <net/sock.h>
 #include <net/ping.h>
 #include <net/udp.h>
diff --git a/net/ipv4/proc.c b/net/ipv4/proc.c
index 4bfad5da94f4..466ea8bb7a4d 100644
--- a/net/ipv4/proc.c
+++ b/net/ipv4/proc.c
@@ -42,6 +42,7 @@
 #include <linux/inetdevice.h>
 #include <linux/proc_fs.h>
 #include <linux/seq_file.h>
+#include <linux/export.h>
 #include <net/sock.h>
 #include <net/raw.h>
 
diff --git a/net/ipv4/raw.c b/net/ipv4/raw.c
index 61714bd52925..007e2eb769d3 100644
--- a/net/ipv4/raw.c
+++ b/net/ipv4/raw.c
@@ -48,6 +48,7 @@
 #include <linux/errno.h>
 #include <linux/aio.h>
 #include <linux/kernel.h>
+#include <linux/export.h>
 #include <linux/spinlock.h>
 #include <linux/sockios.h>
 #include <linux/socket.h>
diff --git a/net/ipv4/route.c b/net/ipv4/route.c
index 075212e41b83..155138d8ec8b 100644
--- a/net/ipv4/route.c
+++ b/net/ipv4/route.c
@@ -120,7 +120,6 @@
 
 static int ip_rt_max_size;
 static int ip_rt_gc_timeout __read_mostly       = RT_GC_TIMEOUT;
-static int ip_rt_gc_interval __read_mostly      = 60 * HZ;
 static int ip_rt_gc_min_interval __read_mostly  = HZ / 2;
 static int ip_rt_redirect_number __read_mostly  = 9;
 static int ip_rt_redirect_load __read_mostly    = HZ / 50;
@@ -324,7 +323,7 @@ static struct rtable *rt_cache_get_first(struct seq_file *seq)
         struct rtable *r = NULL;
 
         for (st->bucket = rt_hash_mask; st->bucket >= 0; --st->bucket) {
-                if (!rcu_dereference_raw(rt_hash_table[st->bucket].chain))
+                if (!rcu_access_pointer(rt_hash_table[st->bucket].chain))
                         continue;
                 rcu_read_lock_bh();
                 r = rcu_dereference_bh(rt_hash_table[st->bucket].chain);
@@ -350,7 +349,7 @@ static struct rtable *__rt_cache_get_next(struct seq_file *seq,
                 do {
                         if (--st->bucket < 0)
                                 return NULL;
-                } while (!rcu_dereference_raw(rt_hash_table[st->bucket].chain));
+                } while (!rcu_access_pointer(rt_hash_table[st->bucket].chain));
                 rcu_read_lock_bh();
                 r = rcu_dereference_bh(rt_hash_table[st->bucket].chain);
         }
@@ -761,7 +760,7 @@ static void rt_do_flush(struct net *net, int process_context)
 
                 if (process_context && need_resched())
                         cond_resched();
-                rth = rcu_dereference_raw(rt_hash_table[i].chain);
+                rth = rcu_access_pointer(rt_hash_table[i].chain);
                 if (!rth)
                         continue;
 
@@ -1309,7 +1308,12 @@ static void rt_del(unsigned hash, struct rtable *rt)
 void ip_rt_redirect(__be32 old_gw, __be32 daddr, __be32 new_gw,
                     __be32 saddr, struct net_device *dev)
 {
+        int s, i;
         struct in_device *in_dev = __in_dev_get_rcu(dev);
+        struct rtable *rt;
+        __be32 skeys[2] = { saddr, 0 };
+        int    ikeys[2] = { dev->ifindex, 0 };
+        struct flowi4 fl4;
         struct inet_peer *peer;
         struct net *net;
 
@@ -1332,13 +1336,34 @@ void ip_rt_redirect(__be32 old_gw, __be32 daddr, __be32 new_gw,
                         goto reject_redirect;
         }
 
-        peer = inet_getpeer_v4(daddr, 1);
-        if (peer) {
-                peer->redirect_learned.a4 = new_gw;
+        memset(&fl4, 0, sizeof(fl4));
+        fl4.daddr = daddr;
+        for (s = 0; s < 2; s++) {
+                for (i = 0; i < 2; i++) {
+                        fl4.flowi4_oif = ikeys[i];
+                        fl4.saddr = skeys[s];
+                        rt = __ip_route_output_key(net, &fl4);
+                        if (IS_ERR(rt))
+                                continue;
 
-                inet_putpeer(peer);
+                        if (rt->dst.error || rt->dst.dev != dev ||
+                            rt->rt_gateway != old_gw) {
+                                ip_rt_put(rt);
+                                continue;
+                        }
+
+                        if (!rt->peer)
+                                rt_bind_peer(rt, rt->rt_dst, 1);
+
+                        peer = rt->peer;
+                        if (peer) {
+                                peer->redirect_learned.a4 = new_gw;
+                                atomic_inc(&__rt_peer_genid);
+                        }
 
-                atomic_inc(&__rt_peer_genid);
+                        ip_rt_put(rt);
+                        return;
+                }
         }
         return;
 
@@ -1568,11 +1593,10 @@ unsigned short ip_rt_frag_needed(struct net *net, const struct iphdr *iph,
                         est_mtu = mtu;
                         peer->pmtu_learned = mtu;
                         peer->pmtu_expires = pmtu_expires;
+                        atomic_inc(&__rt_peer_genid);
                 }
 
                 inet_putpeer(peer);
-
-                atomic_inc(&__rt_peer_genid);
         }
         return est_mtu ? : new_mtu;
 }
@@ -3121,13 +3145,6 @@ static ctl_table ipv4_route_table[] = {
                 .proc_handler   = proc_dointvec_jiffies,
         },
         {
-                .procname       = "gc_interval",
-                .data           = &ip_rt_gc_interval,
-                .maxlen         = sizeof(int),
-                .mode           = 0644,
-                .proc_handler   = proc_dointvec_jiffies,
-        },
-        {
                 .procname       = "redirect_load",
                 .data           = &ip_rt_redirect_load,
                 .maxlen         = sizeof(int),
diff --git a/net/ipv4/syncookies.c b/net/ipv4/syncookies.c
index 3bc5c8f7c71b..90f6544c13e2 100644
--- a/net/ipv4/syncookies.c
+++ b/net/ipv4/syncookies.c
@@ -15,6 +15,7 @@
 #include <linux/random.h>
 #include <linux/cryptohash.h>
 #include <linux/kernel.h>
+#include <linux/export.h>
 #include <net/tcp.h>
 #include <net/route.h>
 
@@ -265,7 +266,7 @@ struct sock *cookie_v4_check(struct sock *sk, struct sk_buff *skb,
                              struct ip_options *opt)
 {
         struct tcp_options_received tcp_opt;
-        u8 *hash_location;
+        const u8 *hash_location;
         struct inet_request_sock *ireq;
         struct tcp_request_sock *treq;
         struct tcp_sock *tp = tcp_sk(sk);
diff --git a/net/ipv4/tcp.c b/net/ipv4/tcp.c
index 46febcacb729..34f5db1e1c8b 100644
--- a/net/ipv4/tcp.c
+++ b/net/ipv4/tcp.c
@@ -374,7 +374,7 @@ unsigned int tcp_poll(struct file *file, struct socket *sock, poll_table *wait)
 {
         unsigned int mask;
         struct sock *sk = sock->sk;
-        struct tcp_sock *tp = tcp_sk(sk);
+        const struct tcp_sock *tp = tcp_sk(sk);
 
         sock_poll_wait(file, sk_sleep(sk), wait);
         if (sk->sk_state == TCP_LISTEN)
@@ -524,11 +524,11 @@ EXPORT_SYMBOL(tcp_ioctl);
 
 static inline void tcp_mark_push(struct tcp_sock *tp, struct sk_buff *skb)
 {
-        TCP_SKB_CB(skb)->flags |= TCPHDR_PSH;
+        TCP_SKB_CB(skb)->tcp_flags |= TCPHDR_PSH;
         tp->pushed_seq = tp->write_seq;
 }
 
-static inline int forced_push(struct tcp_sock *tp)
+static inline int forced_push(const struct tcp_sock *tp)
 {
         return after(tp->write_seq, tp->pushed_seq + (tp->max_window >> 1));
 }
@@ -540,7 +540,7 @@ static inline void skb_entail(struct sock *sk, struct sk_buff *skb)
 
         skb->csum    = 0;
         tcb->seq     = tcb->end_seq = tp->write_seq;
-        tcb->flags   = TCPHDR_ACK;
+        tcb->tcp_flags = TCPHDR_ACK;
         tcb->sacked  = 0;
         skb_header_release(skb);
         tcp_add_write_queue_tail(sk, skb);
@@ -813,7 +813,7 @@ new_segment:
                         goto wait_for_memory;
 
                 if (can_coalesce) {
-                        skb_shinfo(skb)->frags[i - 1].size += copy;
+                        skb_frag_size_add(&skb_shinfo(skb)->frags[i - 1], copy);
                 } else {
                         get_page(page);
                         skb_fill_page_desc(skb, i, page, offset, copy);
@@ -830,7 +830,7 @@ new_segment:
                 skb_shinfo(skb)->gso_segs = 0;
 
                 if (!copied)
-                        TCP_SKB_CB(skb)->flags &= ~TCPHDR_PSH;
+                        TCP_SKB_CB(skb)->tcp_flags &= ~TCPHDR_PSH;
 
                 copied += copy;
                 poffset += copy;
@@ -891,9 +891,9 @@ EXPORT_SYMBOL(tcp_sendpage);
 #define TCP_PAGE(sk)    (sk->sk_sndmsg_page)
 #define TCP_OFF(sk)     (sk->sk_sndmsg_off)
 
-static inline int select_size(struct sock *sk, int sg)
+static inline int select_size(const struct sock *sk, int sg)
 {
-        struct tcp_sock *tp = tcp_sk(sk);
+        const struct tcp_sock *tp = tcp_sk(sk);
         int tmp = tp->mss_cache;
 
         if (sg) {
@@ -1058,8 +1058,7 @@ new_segment:
 
                                 /* Update the skb. */
                                 if (merge) {
-                                        skb_shinfo(skb)->frags[i - 1].size +=
-                                                                        copy;
+                                        skb_frag_size_add(&skb_shinfo(skb)->frags[i - 1], copy);
                                 } else {
                                         skb_fill_page_desc(skb, i, page, off, copy);
                                         if (TCP_PAGE(sk)) {
@@ -1074,7 +1073,7 @@ new_segment:
                         }
 
                         if (!copied)
-                                TCP_SKB_CB(skb)->flags &= ~TCPHDR_PSH;
+                                TCP_SKB_CB(skb)->tcp_flags &= ~TCPHDR_PSH;
 
                         tp->write_seq += copy;
                         TCP_SKB_CB(skb)->end_seq += copy;
@@ -1194,13 +1193,11 @@ void tcp_cleanup_rbuf(struct sock *sk, int copied)
         struct tcp_sock *tp = tcp_sk(sk);
         int time_to_ack = 0;
 
-#if TCP_DEBUG
         struct sk_buff *skb = skb_peek(&sk->sk_receive_queue);
 
         WARN(skb && !before(tp->copied_seq, TCP_SKB_CB(skb)->end_seq),
              "cleanup rbuf bug: copied %X seq %X rcvnxt %X\n",
              tp->copied_seq, TCP_SKB_CB(skb)->end_seq, tp->rcv_nxt);
-#endif
 
         if (inet_csk_ack_scheduled(sk)) {
                 const struct inet_connection_sock *icsk = inet_csk(sk);
@@ -2409,7 +2406,7 @@ static int do_tcp_setsockopt(struct sock *sk, int level,
 int tcp_setsockopt(struct sock *sk, int level, int optname, char __user *optval,
                    unsigned int optlen)
 {
-        struct inet_connection_sock *icsk = inet_csk(sk);
+        const struct inet_connection_sock *icsk = inet_csk(sk);
 
         if (level != SOL_TCP)
                 return icsk->icsk_af_ops->setsockopt(sk, level, optname,
@@ -2431,9 +2428,9 @@ EXPORT_SYMBOL(compat_tcp_setsockopt);
 #endif
 
 /* Return information about state of tcp endpoint in API format. */
-void tcp_get_info(struct sock *sk, struct tcp_info *info)
+void tcp_get_info(const struct sock *sk, struct tcp_info *info)
 {
-        struct tcp_sock *tp = tcp_sk(sk);
+        const struct tcp_sock *tp = tcp_sk(sk);
         const struct inet_connection_sock *icsk = inet_csk(sk);
         u32 now = tcp_time_stamp;
 
@@ -2455,8 +2452,10 @@ void tcp_get_info(struct sock *sk, struct tcp_info *info)
                 info->tcpi_rcv_wscale = tp->rx_opt.rcv_wscale;
         }
 
-        if (tp->ecn_flags&TCP_ECN_OK)
+        if (tp->ecn_flags & TCP_ECN_OK)
                 info->tcpi_options |= TCPI_OPT_ECN;
+        if (tp->ecn_flags & TCP_ECN_SEEN)
+                info->tcpi_options |= TCPI_OPT_ECN_SEEN;
 
         info->tcpi_rto = jiffies_to_usecs(icsk->icsk_rto);
         info->tcpi_ato = jiffies_to_usecs(icsk->icsk_ack.ato);
@@ -2857,26 +2856,25 @@ EXPORT_SYMBOL(tcp_gro_complete);
 
 #ifdef CONFIG_TCP_MD5SIG
 static unsigned long tcp_md5sig_users;
-static struct tcp_md5sig_pool * __percpu *tcp_md5sig_pool;
+static struct tcp_md5sig_pool __percpu *tcp_md5sig_pool;
 static DEFINE_SPINLOCK(tcp_md5sig_pool_lock);
 
-static void __tcp_free_md5sig_pool(struct tcp_md5sig_pool * __percpu *pool)
+static void __tcp_free_md5sig_pool(struct tcp_md5sig_pool __percpu *pool)
 {
         int cpu;
+
         for_each_possible_cpu(cpu) {
-                struct tcp_md5sig_pool *p = *per_cpu_ptr(pool, cpu);
-                if (p) {
-                        if (p->md5_desc.tfm)
-                                crypto_free_hash(p->md5_desc.tfm);
-                        kfree(p);
-                }
+                struct tcp_md5sig_pool *p = per_cpu_ptr(pool, cpu);
+
+                if (p->md5_desc.tfm)
+                        crypto_free_hash(p->md5_desc.tfm);
         }
         free_percpu(pool);
 }
 
 void tcp_free_md5sig_pool(void)
 {
-        struct tcp_md5sig_pool * __percpu *pool = NULL;
+        struct tcp_md5sig_pool __percpu *pool = NULL;
 
         spin_lock_bh(&tcp_md5sig_pool_lock);
         if (--tcp_md5sig_users == 0) {
@@ -2889,30 +2887,24 @@ void tcp_free_md5sig_pool(void)
 }
 EXPORT_SYMBOL(tcp_free_md5sig_pool);
 
-static struct tcp_md5sig_pool * __percpu *
+static struct tcp_md5sig_pool __percpu *
 __tcp_alloc_md5sig_pool(struct sock *sk)
 {
         int cpu;
-        struct tcp_md5sig_pool * __percpu *pool;
+        struct tcp_md5sig_pool __percpu *pool;
 
-        pool = alloc_percpu(struct tcp_md5sig_pool *);
+        pool = alloc_percpu(struct tcp_md5sig_pool);
         if (!pool)
                 return NULL;
 
         for_each_possible_cpu(cpu) {
-                struct tcp_md5sig_pool *p;
                 struct crypto_hash *hash;
 
-                p = kzalloc(sizeof(*p), sk->sk_allocation);
-                if (!p)
-                        goto out_free;
-                *per_cpu_ptr(pool, cpu) = p;
-
                 hash = crypto_alloc_hash("md5", 0, CRYPTO_ALG_ASYNC);
                 if (!hash || IS_ERR(hash))
                         goto out_free;
 
-                p->md5_desc.tfm = hash;
+                per_cpu_ptr(pool, cpu)->md5_desc.tfm = hash;
         }
         return pool;
 out_free:
@@ -2920,9 +2912,9 @@ out_free:
         return NULL;
 }
 
-struct tcp_md5sig_pool * __percpu *tcp_alloc_md5sig_pool(struct sock *sk)
+struct tcp_md5sig_pool __percpu *tcp_alloc_md5sig_pool(struct sock *sk)
 {
-        struct tcp_md5sig_pool * __percpu *pool;
+        struct tcp_md5sig_pool __percpu *pool;
         int alloc = 0;
 
 retry:
@@ -2941,7 +2933,7 @@ retry:
 
         if (alloc) {
                 /* we cannot hold spinlock here because this may sleep. */
-                struct tcp_md5sig_pool * __percpu *p;
+                struct tcp_md5sig_pool __percpu *p;
 
                 p = __tcp_alloc_md5sig_pool(sk);
                 spin_lock_bh(&tcp_md5sig_pool_lock);
@@ -2974,7 +2966,7 @@ EXPORT_SYMBOL(tcp_alloc_md5sig_pool);
  */
 struct tcp_md5sig_pool *tcp_get_md5sig_pool(void)
 {
-        struct tcp_md5sig_pool * __percpu *p;
+        struct tcp_md5sig_pool __percpu *p;
 
         local_bh_disable();
 
@@ -2985,7 +2977,7 @@ struct tcp_md5sig_pool *tcp_get_md5sig_pool(void)
         spin_unlock(&tcp_md5sig_pool_lock);
 
         if (p)
-                return *this_cpu_ptr(p);
+                return this_cpu_ptr(p);
 
         local_bh_enable();
         return NULL;
@@ -3000,23 +2992,25 @@ void tcp_put_md5sig_pool(void)
 EXPORT_SYMBOL(tcp_put_md5sig_pool);
 
 int tcp_md5_hash_header(struct tcp_md5sig_pool *hp,
-                        struct tcphdr *th)
+                        const struct tcphdr *th)
 {
         struct scatterlist sg;
+        struct tcphdr hdr;
         int err;
 
-        __sum16 old_checksum = th->check;
-        th->check = 0;
+        /* We are not allowed to change tcphdr, make a local copy */
+        memcpy(&hdr, th, sizeof(hdr));
+        hdr.check = 0;
+
         /* options aren't included in the hash */
-        sg_init_one(&sg, th, sizeof(struct tcphdr));
-        err = crypto_hash_update(&hp->md5_desc, &sg, sizeof(struct tcphdr));
-        th->check = old_checksum;
+        sg_init_one(&sg, &hdr, sizeof(hdr));
+        err = crypto_hash_update(&hp->md5_desc, &sg, sizeof(hdr));
         return err;
 }
 EXPORT_SYMBOL(tcp_md5_hash_header);
 
 int tcp_md5_hash_skb_data(struct tcp_md5sig_pool *hp,
-                          struct sk_buff *skb, unsigned header_len)
+                          const struct sk_buff *skb, unsigned int header_len)
 {
         struct scatterlist sg;
         const struct tcphdr *tp = tcp_hdr(skb);
@@ -3035,8 +3029,9 @@ int tcp_md5_hash_skb_data(struct tcp_md5sig_pool *hp,
 
         for (i = 0; i < shi->nr_frags; ++i) {
                 const struct skb_frag_struct *f = &shi->frags[i];
-                sg_set_page(&sg, f->page, f->size, f->page_offset);
-                if (crypto_hash_update(desc, &sg, f->size))
+                struct page *page = skb_frag_page(f);
+                sg_set_page(&sg, page, skb_frag_size(f), f->page_offset);
+                if (crypto_hash_update(desc, &sg, skb_frag_size(f)))
                         return 1;
         }
 
@@ -3048,7 +3043,7 @@ int tcp_md5_hash_skb_data(struct tcp_md5sig_pool *hp,
 }
 EXPORT_SYMBOL(tcp_md5_hash_skb_data);
 
-int tcp_md5_hash_key(struct tcp_md5sig_pool *hp, struct tcp_md5sig_key *key)
+int tcp_md5_hash_key(struct tcp_md5sig_pool *hp, const struct tcp_md5sig_key *key)
 {
         struct scatterlist sg;
 
diff --git a/net/ipv4/tcp_input.c b/net/ipv4/tcp_input.c
index d73aab3fbfc0..52b5c2d0ecd0 100644
--- a/net/ipv4/tcp_input.c
+++ b/net/ipv4/tcp_input.c
@@ -206,7 +206,7 @@ static inline void TCP_ECN_queue_cwr(struct tcp_sock *tp)
                 tp->ecn_flags |= TCP_ECN_QUEUE_CWR;
 }
 
-static inline void TCP_ECN_accept_cwr(struct tcp_sock *tp, struct sk_buff *skb)
+static inline void TCP_ECN_accept_cwr(struct tcp_sock *tp, const struct sk_buff *skb)
 {
         if (tcp_hdr(skb)->cwr)
                 tp->ecn_flags &= ~TCP_ECN_DEMAND_CWR;
@@ -217,32 +217,41 @@ static inline void TCP_ECN_withdraw_cwr(struct tcp_sock *tp)
         tp->ecn_flags &= ~TCP_ECN_DEMAND_CWR;
 }
 
-static inline void TCP_ECN_check_ce(struct tcp_sock *tp, struct sk_buff *skb)
+static inline void TCP_ECN_check_ce(struct tcp_sock *tp, const struct sk_buff *skb)
 {
-        if (tp->ecn_flags & TCP_ECN_OK) {
-                if (INET_ECN_is_ce(TCP_SKB_CB(skb)->flags))
-                        tp->ecn_flags |= TCP_ECN_DEMAND_CWR;
+        if (!(tp->ecn_flags & TCP_ECN_OK))
+                return;
+
+        switch (TCP_SKB_CB(skb)->ip_dsfield & INET_ECN_MASK) {
+        case INET_ECN_NOT_ECT:
                 /* Funny extension: if ECT is not set on a segment,
-                 * it is surely retransmit. It is not in ECN RFC,
-                 * but Linux follows this rule. */
-                else if (INET_ECN_is_not_ect((TCP_SKB_CB(skb)->flags)))
+                 * and we already seen ECT on a previous segment,
+                 * it is probably a retransmit.
+                 */
+                if (tp->ecn_flags & TCP_ECN_SEEN)
                         tcp_enter_quickack_mode((struct sock *)tp);
+                break;
+        case INET_ECN_CE:
+                tp->ecn_flags |= TCP_ECN_DEMAND_CWR;
+                /* fallinto */
+        default:
+                tp->ecn_flags |= TCP_ECN_SEEN;
         }
 }
 
-static inline void TCP_ECN_rcv_synack(struct tcp_sock *tp, struct tcphdr *th)
+static inline void TCP_ECN_rcv_synack(struct tcp_sock *tp, const struct tcphdr *th)
 {
         if ((tp->ecn_flags & TCP_ECN_OK) && (!th->ece || th->cwr))
                 tp->ecn_flags &= ~TCP_ECN_OK;
 }
 
-static inline void TCP_ECN_rcv_syn(struct tcp_sock *tp, struct tcphdr *th)
+static inline void TCP_ECN_rcv_syn(struct tcp_sock *tp, const struct tcphdr *th)
 {
         if ((tp->ecn_flags & TCP_ECN_OK) && (!th->ece || !th->cwr))
                 tp->ecn_flags &= ~TCP_ECN_OK;
 }
 
-static inline int TCP_ECN_rcv_ecn_echo(struct tcp_sock *tp, struct tcphdr *th)
+static inline int TCP_ECN_rcv_ecn_echo(const struct tcp_sock *tp, const struct tcphdr *th)
 {
         if (th->ece && !th->syn && (tp->ecn_flags & TCP_ECN_OK))
                 return 1;
@@ -256,14 +265,11 @@ static inline int TCP_ECN_rcv_ecn_echo(struct tcp_sock *tp, struct tcphdr *th)
 
 static void tcp_fixup_sndbuf(struct sock *sk)
 {
-        int sndmem = tcp_sk(sk)->rx_opt.mss_clamp + MAX_TCP_HEADER + 16 +
-                     sizeof(struct sk_buff);
+        int sndmem = SKB_TRUESIZE(tcp_sk(sk)->rx_opt.mss_clamp + MAX_TCP_HEADER);
 
-        if (sk->sk_sndbuf < 3 * sndmem) {
-                sk->sk_sndbuf = 3 * sndmem;
-                if (sk->sk_sndbuf > sysctl_tcp_wmem[2])
-                        sk->sk_sndbuf = sysctl_tcp_wmem[2];
-        }
+        sndmem *= TCP_INIT_CWND;
+        if (sk->sk_sndbuf < sndmem)
+                sk->sk_sndbuf = min(sndmem, sysctl_tcp_wmem[2]);
 }
 
 /* 2. Tuning advertised window (window_clamp, rcv_ssthresh)
@@ -309,7 +315,7 @@ static int __tcp_grow_window(const struct sock *sk, const struct sk_buff *skb)
         return 0;
 }
 
-static void tcp_grow_window(struct sock *sk, struct sk_buff *skb)
+static void tcp_grow_window(struct sock *sk, const struct sk_buff *skb)
 {
         struct tcp_sock *tp = tcp_sk(sk);
 
@@ -339,17 +345,24 @@ static void tcp_grow_window(struct sock *sk, struct sk_buff *skb)
 
 static void tcp_fixup_rcvbuf(struct sock *sk)
 {
-        struct tcp_sock *tp = tcp_sk(sk);
-        int rcvmem = tp->advmss + MAX_TCP_HEADER + 16 + sizeof(struct sk_buff);
+        u32 mss = tcp_sk(sk)->advmss;
+        u32 icwnd = TCP_DEFAULT_INIT_RCVWND;
+        int rcvmem;
 
-        /* Try to select rcvbuf so that 4 mss-sized segments
-         * will fit to window and corresponding skbs will fit to our rcvbuf.
-         * (was 3; 4 is minimum to allow fast retransmit to work.)
+        /* Limit to 10 segments if mss <= 1460,
+         * or 14600/mss segments, with a minimum of two segments.
          */
-        while (tcp_win_from_space(rcvmem) < tp->advmss)
+        if (mss > 1460)
+                icwnd = max_t(u32, (1460 * TCP_DEFAULT_INIT_RCVWND) / mss, 2);
+
+        rcvmem = SKB_TRUESIZE(mss + MAX_TCP_HEADER);
+        while (tcp_win_from_space(rcvmem) < mss)
                 rcvmem += 128;
-        if (sk->sk_rcvbuf < 4 * rcvmem)
-                sk->sk_rcvbuf = min(4 * rcvmem, sysctl_tcp_rmem[2]);
+
+        rcvmem *= icwnd;
+
+        if (sk->sk_rcvbuf < rcvmem)
+                sk->sk_rcvbuf = min(rcvmem, sysctl_tcp_rmem[2]);
 }
 
 /* 4. Try to fixup all. It is made immediately after connection enters
@@ -416,7 +429,7 @@ static void tcp_clamp_window(struct sock *sk)
  */
 void tcp_initialize_rcv_mss(struct sock *sk)
 {
-        struct tcp_sock *tp = tcp_sk(sk);
+        const struct tcp_sock *tp = tcp_sk(sk);
         unsigned int hint = min_t(unsigned int, tp->advmss, tp->mss_cache);
 
         hint = min(hint, tp->rcv_wnd / 2);
@@ -531,8 +544,7 @@ void tcp_rcv_space_adjust(struct sock *sk)
                         space /= tp->advmss;
                         if (!space)
                                 space = 1;
-                        rcvmem = (tp->advmss + MAX_TCP_HEADER +
-                                  16 + sizeof(struct sk_buff));
+                        rcvmem = SKB_TRUESIZE(tp->advmss + MAX_TCP_HEADER);
                         while (tcp_win_from_space(rcvmem) < tp->advmss)
                                 rcvmem += 128;
                         space *= rcvmem;
@@ -812,7 +824,7 @@ void tcp_update_metrics(struct sock *sk)
         }
 }
 
-__u32 tcp_init_cwnd(struct tcp_sock *tp, struct dst_entry *dst)
+__u32 tcp_init_cwnd(const struct tcp_sock *tp, const struct dst_entry *dst)
 {
         __u32 cwnd = (dst ? dst_metric(dst, RTAX_INITCWND) : 0);
 
@@ -1204,7 +1216,7 @@ static void tcp_mark_lost_retrans(struct sock *sk)
                 tp->lost_retrans_low = new_low_seq;
 }
 
-static int tcp_check_dsack(struct sock *sk, struct sk_buff *ack_skb,
+static int tcp_check_dsack(struct sock *sk, const struct sk_buff *ack_skb,
                            struct tcp_sack_block_wire *sp, int num_sacks,
                            u32 prior_snd_una)
 {
@@ -1298,7 +1310,7 @@ static int tcp_match_skb_to_sack(struct sock *sk, struct sk_buff *skb,
         return in_sack;
 }
 
-static u8 tcp_sacktag_one(struct sk_buff *skb, struct sock *sk,
+static u8 tcp_sacktag_one(const struct sk_buff *skb, struct sock *sk,
                           struct tcp_sacktag_state *state,
                           int dup_sack, int pcount)
 {
@@ -1438,7 +1450,7 @@ static int tcp_shifted_skb(struct sock *sk, struct sk_buff *skb,
                 tp->lost_cnt_hint -= tcp_skb_pcount(prev);
         }
 
-        TCP_SKB_CB(skb)->flags |= TCP_SKB_CB(prev)->flags;
+        TCP_SKB_CB(skb)->tcp_flags |= TCP_SKB_CB(prev)->tcp_flags;
         if (skb == tcp_highest_sack(sk))
                 tcp_advance_highest_sack(sk, skb);
 
@@ -1453,13 +1465,13 @@ static int tcp_shifted_skb(struct sock *sk, struct sk_buff *skb,
 /* I wish gso_size would have a bit more sane initialization than
  * something-or-zero which complicates things
  */
-static int tcp_skb_seglen(struct sk_buff *skb)
+static int tcp_skb_seglen(const struct sk_buff *skb)
 {
         return tcp_skb_pcount(skb) == 1 ? skb->len : tcp_skb_mss(skb);
 }
 
 /* Shifting pages past head area doesn't work */
-static int skb_can_shift(struct sk_buff *skb)
+static int skb_can_shift(const struct sk_buff *skb)
 {
         return !skb_headlen(skb) && skb_is_nonlinear(skb);
 }
@@ -1708,19 +1720,19 @@ static struct sk_buff *tcp_maybe_skipping_dsack(struct sk_buff *skb,
         return skb;
 }
 
-static int tcp_sack_cache_ok(struct tcp_sock *tp, struct tcp_sack_block *cache)
+static int tcp_sack_cache_ok(const struct tcp_sock *tp, const struct tcp_sack_block *cache)
 {
         return cache < tp->recv_sack_cache + ARRAY_SIZE(tp->recv_sack_cache);
 }
 
 static int
-tcp_sacktag_write_queue(struct sock *sk, struct sk_buff *ack_skb,
+tcp_sacktag_write_queue(struct sock *sk, const struct sk_buff *ack_skb,
                         u32 prior_snd_una)
 {
         const struct inet_connection_sock *icsk = inet_csk(sk);
         struct tcp_sock *tp = tcp_sk(sk);
-        unsigned char *ptr = (skb_transport_header(ack_skb) +
-                              TCP_SKB_CB(ack_skb)->sacked);
+        const unsigned char *ptr = (skb_transport_header(ack_skb) +
+                                    TCP_SKB_CB(ack_skb)->sacked);
         struct tcp_sack_block_wire *sp_wire = (struct tcp_sack_block_wire *)(ptr+2);
         struct tcp_sack_block sp[TCP_NUM_SACKS];
         struct tcp_sack_block *cache;
@@ -2284,7 +2296,7 @@ static int tcp_check_sack_reneging(struct sock *sk, int flag)
         return 0;
 }
 
-static inline int tcp_fackets_out(struct tcp_sock *tp)
+static inline int tcp_fackets_out(const struct tcp_sock *tp)
 {
         return tcp_is_reno(tp) ? tp->sacked_out + 1 : tp->fackets_out;
 }
@@ -2304,19 +2316,20 @@ static inline int tcp_fackets_out(struct tcp_sock *tp)
  * they differ. Since neither occurs due to loss, TCP should really
  * ignore them.
  */
-static inline int tcp_dupack_heuristics(struct tcp_sock *tp)
+static inline int tcp_dupack_heuristics(const struct tcp_sock *tp)
 {
         return tcp_is_fack(tp) ? tp->fackets_out : tp->sacked_out + 1;
 }
 
-static inline int tcp_skb_timedout(struct sock *sk, struct sk_buff *skb)
+static inline int tcp_skb_timedout(const struct sock *sk,
+                                   const struct sk_buff *skb)
 {
         return tcp_time_stamp - TCP_SKB_CB(skb)->when > inet_csk(sk)->icsk_rto;
 }
 
-static inline int tcp_head_timedout(struct sock *sk)
+static inline int tcp_head_timedout(const struct sock *sk)
 {
-        struct tcp_sock *tp = tcp_sk(sk);
+        const struct tcp_sock *tp = tcp_sk(sk);
 
         return tp->packets_out &&
                tcp_skb_timedout(sk, tcp_write_queue_head(sk));
@@ -2627,7 +2640,7 @@ static void tcp_cwnd_down(struct sock *sk, int flag)
 /* Nothing was retransmitted or returned timestamp is less
  * than timestamp of the first retransmission.
  */
-static inline int tcp_packet_delayed(struct tcp_sock *tp)
+static inline int tcp_packet_delayed(const struct tcp_sock *tp)
 {
         return !tp->retrans_stamp ||
                 (tp->rx_opt.saw_tstamp && tp->rx_opt.rcv_tsecr &&
@@ -2688,7 +2701,7 @@ static void tcp_undo_cwr(struct sock *sk, const bool undo_ssthresh)
         tp->snd_cwnd_stamp = tcp_time_stamp;
 }
 
-static inline int tcp_may_undo(struct tcp_sock *tp)
+static inline int tcp_may_undo(const struct tcp_sock *tp)
 {
         return tp->undo_marker && (!tp->undo_retrans || tcp_packet_delayed(tp));
 }
@@ -2752,9 +2765,9 @@ static void tcp_try_undo_dsack(struct sock *sk)
  * that successive retransmissions of a segment must not advance
  * retrans_stamp under any conditions.
  */
-static int tcp_any_retrans_done(struct sock *sk)
+static int tcp_any_retrans_done(const struct sock *sk)
 {
-        struct tcp_sock *tp = tcp_sk(sk);
+        const struct tcp_sock *tp = tcp_sk(sk);
         struct sk_buff *skb;
 
         if (tp->retrans_out)
@@ -2828,9 +2841,13 @@ static int tcp_try_undo_loss(struct sock *sk)
 static inline void tcp_complete_cwr(struct sock *sk)
 {
         struct tcp_sock *tp = tcp_sk(sk);
-        /* Do not moderate cwnd if it's already undone in cwr or recovery */
-        if (tp->undo_marker && tp->snd_cwnd > tp->snd_ssthresh) {
-                tp->snd_cwnd = tp->snd_ssthresh;
+
+        /* Do not moderate cwnd if it's already undone in cwr or recovery. */
+        if (tp->undo_marker) {
+                if (inet_csk(sk)->icsk_ca_state == TCP_CA_CWR)
+                        tp->snd_cwnd = min(tp->snd_cwnd, tp->snd_ssthresh);
+                else /* PRR */
+                        tp->snd_cwnd = tp->snd_ssthresh;
                 tp->snd_cwnd_stamp = tcp_time_stamp;
         }
         tcp_ca_event(sk, CA_EVENT_COMPLETE_CWR);
@@ -2948,6 +2965,38 @@ void tcp_simple_retransmit(struct sock *sk)
 }
 EXPORT_SYMBOL(tcp_simple_retransmit);
 
+/* This function implements the PRR algorithm, specifcally the PRR-SSRB
+ * (proportional rate reduction with slow start reduction bound) as described in
+ * http://www.ietf.org/id/draft-mathis-tcpm-proportional-rate-reduction-01.txt.
+ * It computes the number of packets to send (sndcnt) based on packets newly
+ * delivered:
+ *   1) If the packets in flight is larger than ssthresh, PRR spreads the
+ *      cwnd reductions across a full RTT.
+ *   2) If packets in flight is lower than ssthresh (such as due to excess
+ *      losses and/or application stalls), do not perform any further cwnd
+ *      reductions, but instead slow start up to ssthresh.
+ */
+static void tcp_update_cwnd_in_recovery(struct sock *sk, int newly_acked_sacked,
+                                        int fast_rexmit, int flag)
+{
+        struct tcp_sock *tp = tcp_sk(sk);
+        int sndcnt = 0;
+        int delta = tp->snd_ssthresh - tcp_packets_in_flight(tp);
+
+        if (tcp_packets_in_flight(tp) > tp->snd_ssthresh) {
+                u64 dividend = (u64)tp->snd_ssthresh * tp->prr_delivered +
+                               tp->prior_cwnd - 1;
+                sndcnt = div_u64(dividend, tp->prior_cwnd) - tp->prr_out;
+        } else {
+                sndcnt = min_t(int, delta,
+                               max_t(int, tp->prr_delivered - tp->prr_out,
+                                     newly_acked_sacked) + 1);
+        }
+
+        sndcnt = max(sndcnt, (fast_rexmit ? 1 : 0));
+        tp->snd_cwnd = tcp_packets_in_flight(tp) + sndcnt;
+}
+
 /* Process an event, which can update packets-in-flight not trivially.
  * Main goal of this function is to calculate new estimate for left_out,
  * taking into account both packets sitting in receiver's buffer and
@@ -2959,7 +3008,8 @@ EXPORT_SYMBOL(tcp_simple_retransmit);
  * It does _not_ decide what to send, it is made in function
  * tcp_xmit_retransmit_queue().
  */
-static void tcp_fastretrans_alert(struct sock *sk, int pkts_acked, int flag)
+static void tcp_fastretrans_alert(struct sock *sk, int pkts_acked,
+                                  int newly_acked_sacked, int flag)
 {
         struct inet_connection_sock *icsk = inet_csk(sk);
         struct tcp_sock *tp = tcp_sk(sk);
@@ -3109,13 +3159,17 @@ static void tcp_fastretrans_alert(struct sock *sk, int pkts_acked, int flag)
 
                 tp->bytes_acked = 0;
                 tp->snd_cwnd_cnt = 0;
+                tp->prior_cwnd = tp->snd_cwnd;
+                tp->prr_delivered = 0;
+                tp->prr_out = 0;
                 tcp_set_ca_state(sk, TCP_CA_Recovery);
                 fast_rexmit = 1;
         }
 
         if (do_lost || (tcp_is_fack(tp) && tcp_head_timedout(sk)))
                 tcp_update_scoreboard(sk, fast_rexmit);
-        tcp_cwnd_down(sk, flag);
+        tp->prr_delivered += newly_acked_sacked;
+        tcp_update_cwnd_in_recovery(sk, newly_acked_sacked, fast_rexmit, flag);
         tcp_xmit_retransmit_queue(sk);
 }
 
@@ -3192,7 +3246,7 @@ static void tcp_cong_avoid(struct sock *sk, u32 ack, u32 in_flight)
  */
 static void tcp_rearm_rto(struct sock *sk)
 {
-        struct tcp_sock *tp = tcp_sk(sk);
+        const struct tcp_sock *tp = tcp_sk(sk);
 
         if (!tp->packets_out) {
                 inet_csk_clear_xmit_timer(sk, ICSK_TIME_RETRANS);
@@ -3296,7 +3350,7 @@ static int tcp_clean_rtx_queue(struct sock *sk, int prior_fackets,
                  * connection startup slow start one packet too
                  * quickly.  This is severely frowned upon behavior.
                  */
-                if (!(scb->flags & TCPHDR_SYN)) {
+                if (!(scb->tcp_flags & TCPHDR_SYN)) {
                         flag |= FLAG_DATA_ACKED;
                 } else {
                         flag |= FLAG_SYN_ACKED;
@@ -3444,7 +3498,7 @@ static inline int tcp_may_update_window(const struct tcp_sock *tp,
  * Window update algorithm, described in RFC793/RFC1122 (used in linux-2.2
  * and in FreeBSD. NetBSD's one is even worse.) is wrong.
  */
-static int tcp_ack_update_window(struct sock *sk, struct sk_buff *skb, u32 ack,
+static int tcp_ack_update_window(struct sock *sk, const struct sk_buff *skb, u32 ack,
                                  u32 ack_seq)
 {
         struct tcp_sock *tp = tcp_sk(sk);
@@ -3620,7 +3674,7 @@ static int tcp_process_frto(struct sock *sk, int flag)
 }
 
 /* This routine deals with incoming acks, but not outgoing ones. */
-static int tcp_ack(struct sock *sk, struct sk_buff *skb, int flag)
+static int tcp_ack(struct sock *sk, const struct sk_buff *skb, int flag)
 {
         struct inet_connection_sock *icsk = inet_csk(sk);
         struct tcp_sock *tp = tcp_sk(sk);
@@ -3630,6 +3684,8 @@ static int tcp_ack(struct sock *sk, struct sk_buff *skb, int flag)
         u32 prior_in_flight;
         u32 prior_fackets;
         int prior_packets;
+        int prior_sacked = tp->sacked_out;
+        int newly_acked_sacked = 0;
         int frto_cwnd = 0;
 
         /* If the ack is older than previous acks
@@ -3701,6 +3757,9 @@ static int tcp_ack(struct sock *sk, struct sk_buff *skb, int flag)
         /* See if we can take anything off of the retransmit queue. */
         flag |= tcp_clean_rtx_queue(sk, prior_fackets, prior_snd_una);
 
+        newly_acked_sacked = (prior_packets - prior_sacked) -
+                             (tp->packets_out - tp->sacked_out);
+
         if (tp->frto_counter)
                 frto_cwnd = tcp_process_frto(sk, flag);
         /* Guarantee sacktag reordering detection against wrap-arounds */
@@ -3713,7 +3772,7 @@ static int tcp_ack(struct sock *sk, struct sk_buff *skb, int flag)
                     tcp_may_raise_cwnd(sk, flag))
                         tcp_cong_avoid(sk, ack, prior_in_flight);
                 tcp_fastretrans_alert(sk, prior_packets - tp->packets_out,
-                                      flag);
+                                      newly_acked_sacked, flag);
         } else {
                 if ((flag & FLAG_DATA_ACKED) && !frto_cwnd)
                         tcp_cong_avoid(sk, ack, prior_in_flight);
@@ -3752,14 +3811,14 @@ old_ack:
  * But, this can also be called on packets in the established flow when
  * the fast version below fails.
  */
-void tcp_parse_options(struct sk_buff *skb, struct tcp_options_received *opt_rx,
-                       u8 **hvpp, int estab)
+void tcp_parse_options(const struct sk_buff *skb, struct tcp_options_received *opt_rx,
+                       const u8 **hvpp, int estab)
 {
-        unsigned char *ptr;
-        struct tcphdr *th = tcp_hdr(skb);
+        const unsigned char *ptr;
+        const struct tcphdr *th = tcp_hdr(skb);
         int length = (th->doff * 4) - sizeof(struct tcphdr);
 
-        ptr = (unsigned char *)(th + 1);
+        ptr = (const unsigned char *)(th + 1);
         opt_rx->saw_tstamp = 0;
 
         while (length > 0) {
@@ -3870,9 +3929,9 @@ void tcp_parse_options(struct sk_buff *skb, struct tcp_options_received *opt_rx,
 }
 EXPORT_SYMBOL(tcp_parse_options);
 
-static int tcp_parse_aligned_timestamp(struct tcp_sock *tp, struct tcphdr *th)
+static int tcp_parse_aligned_timestamp(struct tcp_sock *tp, const struct tcphdr *th)
 {
-        __be32 *ptr = (__be32 *)(th + 1);
+        const __be32 *ptr = (const __be32 *)(th + 1);
 
         if (*ptr == htonl((TCPOPT_NOP << 24) | (TCPOPT_NOP << 16)
                           | (TCPOPT_TIMESTAMP << 8) | TCPOLEN_TIMESTAMP)) {
@@ -3889,8 +3948,9 @@ static int tcp_parse_aligned_timestamp(struct tcp_sock *tp, struct tcphdr *th)
 /* Fast parse options. This hopes to only see timestamps.
  * If it is wrong it falls back on tcp_parse_options().
  */
-static int tcp_fast_parse_options(struct sk_buff *skb, struct tcphdr *th,
-                                  struct tcp_sock *tp, u8 **hvpp)
+static int tcp_fast_parse_options(const struct sk_buff *skb,
+                                  const struct tcphdr *th,
+                                  struct tcp_sock *tp, const u8 **hvpp)
 {
         /* In the spirit of fast parsing, compare doff directly to constant
          * values.  Because equality is used, short doff can be ignored here.
@@ -3911,10 +3971,10 @@ static int tcp_fast_parse_options(struct sk_buff *skb, struct tcphdr *th,
 /*
  * Parse MD5 Signature option
  */
-u8 *tcp_parse_md5sig_option(struct tcphdr *th)
+const u8 *tcp_parse_md5sig_option(const struct tcphdr *th)
 {
-        int length = (th->doff << 2) - sizeof (*th);
-        u8 *ptr = (u8*)(th + 1);
+        int length = (th->doff << 2) - sizeof(*th);
+        const u8 *ptr = (const u8 *)(th + 1);
 
         /* If the TCP option is too short, we can short cut */
         if (length < TCPOLEN_MD5SIG)
@@ -3991,8 +4051,8 @@ static inline void tcp_replace_ts_recent(struct tcp_sock *tp, u32 seq)
 
 static int tcp_disordered_ack(const struct sock *sk, const struct sk_buff *skb)
 {
-        struct tcp_sock *tp = tcp_sk(sk);
-        struct tcphdr *th = tcp_hdr(skb);
+        const struct tcp_sock *tp = tcp_sk(sk);
+        const struct tcphdr *th = tcp_hdr(skb);
         u32 seq = TCP_SKB_CB(skb)->seq;
         u32 ack = TCP_SKB_CB(skb)->ack_seq;
 
@@ -4031,7 +4091,7 @@ static inline int tcp_paws_discard(const struct sock *sk,
  * (borrowed from freebsd)
  */
 
-static inline int tcp_sequence(struct tcp_sock *tp, u32 seq, u32 end_seq)
+static inline int tcp_sequence(const struct tcp_sock *tp, u32 seq, u32 end_seq)
 {
         return  !before(end_seq, tp->rcv_wup) &&
                 !after(seq, tp->rcv_nxt + tcp_receive_window(tp));
@@ -4076,7 +4136,7 @@ static void tcp_reset(struct sock *sk)
  *
  *      If we are in FINWAIT-2, a received FIN moves us to TIME-WAIT.
  */
-static void tcp_fin(struct sk_buff *skb, struct sock *sk, struct tcphdr *th)
+static void tcp_fin(struct sock *sk)
 {
         struct tcp_sock *tp = tcp_sk(sk);
 
@@ -4188,7 +4248,7 @@ static void tcp_dsack_extend(struct sock *sk, u32 seq, u32 end_seq)
                 tcp_sack_extend(tp->duplicate_sack, seq, end_seq);
 }
 
-static void tcp_send_dupack(struct sock *sk, struct sk_buff *skb)
+static void tcp_send_dupack(struct sock *sk, const struct sk_buff *skb)
 {
         struct tcp_sock *tp = tcp_sk(sk);
 
@@ -4347,7 +4407,7 @@ static void tcp_ofo_queue(struct sock *sk)
                 __skb_queue_tail(&sk->sk_receive_queue, skb);
                 tp->rcv_nxt = TCP_SKB_CB(skb)->end_seq;
                 if (tcp_hdr(skb)->fin)
-                        tcp_fin(skb, sk, tcp_hdr(skb));
+                        tcp_fin(sk);
         }
 }
 
@@ -4375,7 +4435,7 @@ static inline int tcp_try_rmem_schedule(struct sock *sk, unsigned int size)
 
 static void tcp_data_queue(struct sock *sk, struct sk_buff *skb)
 {
-        struct tcphdr *th = tcp_hdr(skb);
+        const struct tcphdr *th = tcp_hdr(skb);
         struct tcp_sock *tp = tcp_sk(sk);
         int eaten = -1;
 
@@ -4429,7 +4489,7 @@ queue_and_out:
                 if (skb->len)
                         tcp_event_data_recv(sk, skb);
                 if (th->fin)
-                        tcp_fin(skb, sk, th);
+                        tcp_fin(sk);
 
                 if (!skb_queue_empty(&tp->out_of_order_queue)) {
                         tcp_ofo_queue(sk);
@@ -4859,9 +4919,9 @@ void tcp_cwnd_application_limited(struct sock *sk)
         tp->snd_cwnd_stamp = tcp_time_stamp;
 }
 
-static int tcp_should_expand_sndbuf(struct sock *sk)
+static int tcp_should_expand_sndbuf(const struct sock *sk)
 {
-        struct tcp_sock *tp = tcp_sk(sk);
+        const struct tcp_sock *tp = tcp_sk(sk);
 
         /* If the user specified a specific send buffer setting, do
          * not modify it.
@@ -4895,8 +4955,10 @@ static void tcp_new_space(struct sock *sk)
         struct tcp_sock *tp = tcp_sk(sk);
 
         if (tcp_should_expand_sndbuf(sk)) {
-                int sndmem = max_t(u32, tp->rx_opt.mss_clamp, tp->mss_cache) +
-                        MAX_TCP_HEADER + 16 + sizeof(struct sk_buff);
+                int sndmem = SKB_TRUESIZE(max_t(u32,
+                                                tp->rx_opt.mss_clamp,
+                                                tp->mss_cache) +
+                                          MAX_TCP_HEADER);
                 int demanded = max_t(unsigned int, tp->snd_cwnd,
                                      tp->reordering + 1);
                 sndmem *= 2 * demanded;
@@ -4968,7 +5030,7 @@ static inline void tcp_ack_snd_check(struct sock *sk)
  *      either form (or just set the sysctl tcp_stdurg).
  */
 
-static void tcp_check_urg(struct sock *sk, struct tcphdr *th)
+static void tcp_check_urg(struct sock *sk, const struct tcphdr *th)
 {
         struct tcp_sock *tp = tcp_sk(sk);
         u32 ptr = ntohs(th->urg_ptr);
@@ -5034,7 +5096,7 @@ static void tcp_check_urg(struct sock *sk, struct tcphdr *th)
 }
 
 /* This is the 'fast' part of urgent handling. */
-static void tcp_urg(struct sock *sk, struct sk_buff *skb, struct tcphdr *th)
+static void tcp_urg(struct sock *sk, struct sk_buff *skb, const struct tcphdr *th)
 {
         struct tcp_sock *tp = tcp_sk(sk);
 
@@ -5155,9 +5217,9 @@ out:
  * play significant role here.
  */
 static int tcp_validate_incoming(struct sock *sk, struct sk_buff *skb,
-                              struct tcphdr *th, int syn_inerr)
+                              const struct tcphdr *th, int syn_inerr)
 {
-        u8 *hash_location;
+        const u8 *hash_location;
         struct tcp_sock *tp = tcp_sk(sk);
 
         /* RFC1323: H1. Apply PAWS check first. */
@@ -5238,7 +5300,7 @@ discard:
  *      tcp_data_queue when everything is OK.
  */
 int tcp_rcv_established(struct sock *sk, struct sk_buff *skb,
-                        struct tcphdr *th, unsigned len)
+                        const struct tcphdr *th, unsigned int len)
 {
         struct tcp_sock *tp = tcp_sk(sk);
         int res;
@@ -5449,9 +5511,9 @@ discard:
 EXPORT_SYMBOL(tcp_rcv_established);
 
 static int tcp_rcv_synsent_state_process(struct sock *sk, struct sk_buff *skb,
-                                         struct tcphdr *th, unsigned len)
+                                         const struct tcphdr *th, unsigned int len)
 {
-        u8 *hash_location;
+        const u8 *hash_location;
         struct inet_connection_sock *icsk = inet_csk(sk);
         struct tcp_sock *tp = tcp_sk(sk);
         struct tcp_cookie_values *cvp = tp->cookie_values;
@@ -5726,7 +5788,7 @@ reset_and_undo:
  */
 
 int tcp_rcv_state_process(struct sock *sk, struct sk_buff *skb,
-                          struct tcphdr *th, unsigned len)
+                          const struct tcphdr *th, unsigned int len)
 {
         struct tcp_sock *tp = tcp_sk(sk);
         struct inet_connection_sock *icsk = inet_csk(sk);
diff --git a/net/ipv4/tcp_ipv4.c b/net/ipv4/tcp_ipv4.c
index 7963e03f1068..a7443159c400 100644
--- a/net/ipv4/tcp_ipv4.c
+++ b/net/ipv4/tcp_ipv4.c
@@ -92,7 +92,7 @@ EXPORT_SYMBOL(sysctl_tcp_low_latency);
 static struct tcp_md5sig_key *tcp_v4_md5_do_lookup(struct sock *sk,
                                                    __be32 addr);
 static int tcp_v4_md5_hash_hdr(char *md5_hash, struct tcp_md5sig_key *key,
-                               __be32 daddr, __be32 saddr, struct tcphdr *th);
+                               __be32 daddr, __be32 saddr, const struct tcphdr *th);
 #else
 static inline
 struct tcp_md5sig_key *tcp_v4_md5_do_lookup(struct sock *sk, __be32 addr)
@@ -104,7 +104,7 @@ struct tcp_md5sig_key *tcp_v4_md5_do_lookup(struct sock *sk, __be32 addr)
 struct inet_hashinfo tcp_hashinfo;
 EXPORT_SYMBOL(tcp_hashinfo);
 
-static inline __u32 tcp_v4_init_sequence(struct sk_buff *skb)
+static inline __u32 tcp_v4_init_sequence(const struct sk_buff *skb)
 {
         return secure_tcp_sequence_number(ip_hdr(skb)->daddr,
                                           ip_hdr(skb)->saddr,
@@ -552,7 +552,7 @@ static void __tcp_v4_send_check(struct sk_buff *skb,
 /* This routine computes an IPv4 TCP checksum. */
 void tcp_v4_send_check(struct sock *sk, struct sk_buff *skb)
 {
-        struct inet_sock *inet = inet_sk(sk);
+        const struct inet_sock *inet = inet_sk(sk);
 
         __tcp_v4_send_check(skb, inet->inet_saddr, inet->inet_daddr);
 }
@@ -590,7 +590,7 @@ int tcp_v4_gso_send_check(struct sk_buff *skb)
 
 static void tcp_v4_send_reset(struct sock *sk, struct sk_buff *skb)
 {
-        struct tcphdr *th = tcp_hdr(skb);
+        const struct tcphdr *th = tcp_hdr(skb);
         struct {
                 struct tcphdr th;
 #ifdef CONFIG_TCP_MD5SIG
@@ -652,6 +652,7 @@ static void tcp_v4_send_reset(struct sock *sk, struct sk_buff *skb)
         arg.flags = (sk && inet_sk(sk)->transparent) ? IP_REPLY_ARG_NOSRCCHECK : 0;
 
         net = dev_net(skb_dst(skb)->dev);
+        arg.tos = ip_hdr(skb)->tos;
         ip_send_reply(net->ipv4.tcp_sock, skb, ip_hdr(skb)->saddr,
                       &arg, arg.iov[0].iov_len);
 
@@ -666,9 +667,9 @@ static void tcp_v4_send_reset(struct sock *sk, struct sk_buff *skb)
 static void tcp_v4_send_ack(struct sk_buff *skb, u32 seq, u32 ack,
                             u32 win, u32 ts, int oif,
                             struct tcp_md5sig_key *key,
-                            int reply_flags)
+                            int reply_flags, u8 tos)
 {
-        struct tcphdr *th = tcp_hdr(skb);
+        const struct tcphdr *th = tcp_hdr(skb);
         struct {
                 struct tcphdr th;
                 __be32 opt[(TCPOLEN_TSTAMP_ALIGNED >> 2)
@@ -726,7 +727,7 @@ static void tcp_v4_send_ack(struct sk_buff *skb, u32 seq, u32 ack,
         arg.csumoffset = offsetof(struct tcphdr, check) / 2;
         if (oif)
                 arg.bound_dev_if = oif;
-
+        arg.tos = tos;
         ip_send_reply(net->ipv4.tcp_sock, skb, ip_hdr(skb)->saddr,
                       &arg, arg.iov[0].iov_len);
 
@@ -743,7 +744,8 @@ static void tcp_v4_timewait_ack(struct sock *sk, struct sk_buff *skb)
                         tcptw->tw_ts_recent,
                         tw->tw_bound_dev_if,
                         tcp_twsk_md5_key(tcptw),
-                        tw->tw_transparent ? IP_REPLY_ARG_NOSRCCHECK : 0
+                        tw->tw_transparent ? IP_REPLY_ARG_NOSRCCHECK : 0,
+                        tw->tw_tos
                         );
 
         inet_twsk_put(tw);
@@ -757,7 +759,8 @@ static void tcp_v4_reqsk_send_ack(struct sock *sk, struct sk_buff *skb,
                         req->ts_recent,
                         0,
                         tcp_v4_md5_do_lookup(sk, ip_hdr(skb)->daddr),
-                        inet_rsk(req)->no_srccheck ? IP_REPLY_ARG_NOSRCCHECK : 0);
+                        inet_rsk(req)->no_srccheck ? IP_REPLY_ARG_NOSRCCHECK : 0,
+                        ip_hdr(skb)->tos);
 }
 
 /*
@@ -1090,7 +1093,7 @@ static int tcp_v4_md5_hash_pseudoheader(struct tcp_md5sig_pool *hp,
 }
 
 static int tcp_v4_md5_hash_hdr(char *md5_hash, struct tcp_md5sig_key *key,
-                               __be32 daddr, __be32 saddr, struct tcphdr *th)
+                               __be32 daddr, __be32 saddr, const struct tcphdr *th)
 {
         struct tcp_md5sig_pool *hp;
         struct hash_desc *desc;
@@ -1122,12 +1125,12 @@ clear_hash_noput:
 }
 
 int tcp_v4_md5_hash_skb(char *md5_hash, struct tcp_md5sig_key *key,
-                        struct sock *sk, struct request_sock *req,
-                        struct sk_buff *skb)
+                        const struct sock *sk, const struct request_sock *req,
+                        const struct sk_buff *skb)
 {
         struct tcp_md5sig_pool *hp;
         struct hash_desc *desc;
-        struct tcphdr *th = tcp_hdr(skb);
+        const struct tcphdr *th = tcp_hdr(skb);
         __be32 saddr, daddr;
 
         if (sk) {
@@ -1172,7 +1175,7 @@ clear_hash_noput:
 }
 EXPORT_SYMBOL(tcp_v4_md5_hash_skb);
 
-static int tcp_v4_inbound_md5_hash(struct sock *sk, struct sk_buff *skb)
+static int tcp_v4_inbound_md5_hash(struct sock *sk, const struct sk_buff *skb)
 {
         /*
          * This gets called for each TCP segment that arrives
@@ -1182,10 +1185,10 @@ static int tcp_v4_inbound_md5_hash(struct sock *sk, struct sk_buff *skb)
          * o MD5 hash and we're not expecting one.
          * o MD5 hash and its wrong.
          */
-        __u8 *hash_location = NULL;
+        const __u8 *hash_location = NULL;
         struct tcp_md5sig_key *hash_expected;
         const struct iphdr *iph = ip_hdr(skb);
-        struct tcphdr *th = tcp_hdr(skb);
+        const struct tcphdr *th = tcp_hdr(skb);
         int genhash;
         unsigned char newhash[16];
 
@@ -1248,7 +1251,7 @@ int tcp_v4_conn_request(struct sock *sk, struct sk_buff *skb)
 {
         struct tcp_extend_values tmp_ext;
         struct tcp_options_received tmp_opt;
-        u8 *hash_location;
+        const u8 *hash_location;
         struct request_sock *req;
         struct inet_request_sock *ireq;
         struct tcp_sock *tp = tcp_sk(sk);
@@ -1507,6 +1510,7 @@ exit:
         NET_INC_STATS_BH(sock_net(sk), LINUX_MIB_LISTENDROPS);
         return NULL;
 put_and_exit:
+        bh_unlock_sock(newsk);
         sock_put(newsk);
         goto exit;
 }
@@ -1588,7 +1592,7 @@ int tcp_v4_do_rcv(struct sock *sk, struct sk_buff *skb)
 #endif
 
         if (sk->sk_state == TCP_ESTABLISHED) { /* Fast path */
-                sock_rps_save_rxhash(sk, skb->rxhash);
+                sock_rps_save_rxhash(sk, skb);
                 if (tcp_rcv_established(sk, skb, tcp_hdr(skb), skb->len)) {
                         rsk = sk;
                         goto reset;
@@ -1605,7 +1609,7 @@ int tcp_v4_do_rcv(struct sock *sk, struct sk_buff *skb)
                         goto discard;
 
                 if (nsk != sk) {
-                        sock_rps_save_rxhash(nsk, skb->rxhash);
+                        sock_rps_save_rxhash(nsk, skb);
                         if (tcp_child_process(sk, nsk, skb)) {
                                 rsk = nsk;
                                 goto reset;
@@ -1613,7 +1617,7 @@ int tcp_v4_do_rcv(struct sock *sk, struct sk_buff *skb)
                         return 0;
                 }
         } else
-                sock_rps_save_rxhash(sk, skb->rxhash);
+                sock_rps_save_rxhash(sk, skb);
 
         if (tcp_rcv_state_process(sk, skb, tcp_hdr(skb), skb->len)) {
                 rsk = sk;
@@ -1645,7 +1649,7 @@ EXPORT_SYMBOL(tcp_v4_do_rcv);
 int tcp_v4_rcv(struct sk_buff *skb)
 {
         const struct iphdr *iph;
-        struct tcphdr *th;
+        const struct tcphdr *th;
         struct sock *sk;
         int ret;
         struct net *net = dev_net(skb->dev);
@@ -1680,7 +1684,7 @@ int tcp_v4_rcv(struct sk_buff *skb)
                                     skb->len - th->doff * 4);
         TCP_SKB_CB(skb)->ack_seq = ntohl(th->ack_seq);
         TCP_SKB_CB(skb)->when    = 0;
-        TCP_SKB_CB(skb)->flags   = iph->tos;
+        TCP_SKB_CB(skb)->ip_dsfield = ipv4_get_dsfield(iph);
         TCP_SKB_CB(skb)->sacked  = 0;
 
         sk = __inet_lookup_skb(&tcp_hashinfo, skb, th->source, th->dest);
@@ -1809,7 +1813,7 @@ EXPORT_SYMBOL(tcp_v4_get_peer);
 
 void *tcp_v4_tw_get_peer(struct sock *sk)
 {
-        struct inet_timewait_sock *tw = inet_twsk(sk);
+        const struct inet_timewait_sock *tw = inet_twsk(sk);
 
         return inet_getpeer_v4(tw->tw_daddr, 1);
 }
@@ -2336,7 +2340,7 @@ static void tcp_seq_stop(struct seq_file *seq, void *v)
         }
 }
 
-static int tcp_seq_open(struct inode *inode, struct file *file)
+int tcp_seq_open(struct inode *inode, struct file *file)
 {
         struct tcp_seq_afinfo *afinfo = PDE(inode)->data;
         struct tcp_iter_state *s;
@@ -2352,23 +2356,19 @@ static int tcp_seq_open(struct inode *inode, struct file *file)
         s->last_pos             = 0;
         return 0;
 }
+EXPORT_SYMBOL(tcp_seq_open);
 
 int tcp_proc_register(struct net *net, struct tcp_seq_afinfo *afinfo)
 {
         int rc = 0;
         struct proc_dir_entry *p;
 
-        afinfo->seq_fops.open           = tcp_seq_open;
-        afinfo->seq_fops.read           = seq_read;
-        afinfo->seq_fops.llseek         = seq_lseek;
-        afinfo->seq_fops.release        = seq_release_net;
-
         afinfo->seq_ops.start           = tcp_seq_start;
         afinfo->seq_ops.next            = tcp_seq_next;
         afinfo->seq_ops.stop            = tcp_seq_stop;
 
         p = proc_create_data(afinfo->name, S_IRUGO, net->proc_net,
-                             &afinfo->seq_fops, afinfo);
+                             afinfo->seq_fops, afinfo);
         if (!p)
                 rc = -ENOMEM;
         return rc;
@@ -2381,7 +2381,7 @@ void tcp_proc_unregister(struct net *net, struct tcp_seq_afinfo *afinfo)
 }
 EXPORT_SYMBOL(tcp_proc_unregister);
 
-static void get_openreq4(struct sock *sk, struct request_sock *req,
+static void get_openreq4(const struct sock *sk, const struct request_sock *req,
                          struct seq_file *f, int i, int uid, int *len)
 {
         const struct inet_request_sock *ireq = inet_rsk(req);
@@ -2411,9 +2411,9 @@ static void get_tcp4_sock(struct sock *sk, struct seq_file *f, int i, int *len)
 {
         int timer_active;
         unsigned long timer_expires;
-        struct tcp_sock *tp = tcp_sk(sk);
+        const struct tcp_sock *tp = tcp_sk(sk);
         const struct inet_connection_sock *icsk = inet_csk(sk);
-        struct inet_sock *inet = inet_sk(sk);
+        const struct inet_sock *inet = inet_sk(sk);
         __be32 dest = inet->inet_daddr;
         __be32 src = inet->inet_rcv_saddr;
         __u16 destp = ntohs(inet->inet_dport);
@@ -2462,7 +2462,7 @@ static void get_tcp4_sock(struct sock *sk, struct seq_file *f, int i, int *len)
                 len);
 }
 
-static void get_timewait4_sock(struct inet_timewait_sock *tw,
+static void get_timewait4_sock(const struct inet_timewait_sock *tw,
                                struct seq_file *f, int i, int *len)
 {
         __be32 dest, src;
@@ -2517,12 +2517,18 @@ out:
         return 0;
 }
 
+static const struct file_operations tcp_afinfo_seq_fops = {
+        .owner   = THIS_MODULE,
+        .open    = tcp_seq_open,
+        .read    = seq_read,
+        .llseek  = seq_lseek,
+        .release = seq_release_net
+};
+
 static struct tcp_seq_afinfo tcp4_seq_afinfo = {
         .name           = "tcp",
         .family         = AF_INET,
-        .seq_fops       = {
-                .owner          = THIS_MODULE,
-        },
+        .seq_fops       = &tcp_afinfo_seq_fops,
         .seq_ops        = {
                 .show           = tcp4_seq_show,
         },
diff --git a/net/ipv4/tcp_minisocks.c b/net/ipv4/tcp_minisocks.c
index 0ce3d06dce60..66363b689ad6 100644
--- a/net/ipv4/tcp_minisocks.c
+++ b/net/ipv4/tcp_minisocks.c
@@ -141,7 +141,7 @@ tcp_timewait_state_process(struct inet_timewait_sock *tw, struct sk_buff *skb,
                            const struct tcphdr *th)
 {
         struct tcp_options_received tmp_opt;
-        u8 *hash_location;
+        const u8 *hash_location;
         struct tcp_timewait_sock *tcptw = tcp_twsk((struct sock *)tw);
         int paws_reject = 0;
 
@@ -345,6 +345,7 @@ void tcp_time_wait(struct sock *sk, int state, int timeo)
                         tw6 = inet6_twsk((struct sock *)tw);
                         ipv6_addr_copy(&tw6->tw_v6_daddr, &np->daddr);
                         ipv6_addr_copy(&tw6->tw_v6_rcv_saddr, &np->rcv_saddr);
+                        tw->tw_tclass = np->tclass;
                         tw->tw_ipv6only = np->ipv6only;
                 }
 #endif
@@ -567,7 +568,7 @@ struct sock *tcp_check_req(struct sock *sk, struct sk_buff *skb,
                            struct request_sock **prev)
 {
         struct tcp_options_received tmp_opt;
-        u8 *hash_location;
+        const u8 *hash_location;
         struct sock *child;
         const struct tcphdr *th = tcp_hdr(skb);
         __be32 flg = tcp_flag_word(th) & (TCP_FLAG_RST|TCP_FLAG_SYN|TCP_FLAG_ACK);
diff --git a/net/ipv4/tcp_output.c b/net/ipv4/tcp_output.c
index 882e0b0964d0..980b98f6288c 100644
--- a/net/ipv4/tcp_output.c
+++ b/net/ipv4/tcp_output.c
@@ -65,7 +65,7 @@ EXPORT_SYMBOL_GPL(sysctl_tcp_cookie_size);
 
 
 /* Account for new data that has been sent to the network. */
-static void tcp_event_new_data_sent(struct sock *sk, struct sk_buff *skb)
+static void tcp_event_new_data_sent(struct sock *sk, const struct sk_buff *skb)
 {
         struct tcp_sock *tp = tcp_sk(sk);
         unsigned int prior_packets = tp->packets_out;
@@ -89,9 +89,9 @@ static void tcp_event_new_data_sent(struct sock *sk, struct sk_buff *skb)
  * Anything in between SND.UNA...SND.UNA+SND.WND also can be already
  * invalid. OK, let's make this for now:
  */
-static inline __u32 tcp_acceptable_seq(struct sock *sk)
+static inline __u32 tcp_acceptable_seq(const struct sock *sk)
 {
-        struct tcp_sock *tp = tcp_sk(sk);
+        const struct tcp_sock *tp = tcp_sk(sk);
 
         if (!before(tcp_wnd_end(tp), tp->snd_nxt))
                 return tp->snd_nxt;
@@ -116,7 +116,7 @@ static inline __u32 tcp_acceptable_seq(struct sock *sk)
 static __u16 tcp_advertise_mss(struct sock *sk)
 {
         struct tcp_sock *tp = tcp_sk(sk);
-        struct dst_entry *dst = __sk_dst_get(sk);
+        const struct dst_entry *dst = __sk_dst_get(sk);
         int mss = tp->advmss;
 
         if (dst) {
@@ -133,7 +133,7 @@ static __u16 tcp_advertise_mss(struct sock *sk)
 
 /* RFC2861. Reset CWND after idle period longer RTO to "restart window".
  * This is the first part of cwnd validation mechanism. */
-static void tcp_cwnd_restart(struct sock *sk, struct dst_entry *dst)
+static void tcp_cwnd_restart(struct sock *sk, const struct dst_entry *dst)
 {
         struct tcp_sock *tp = tcp_sk(sk);
         s32 delta = tcp_time_stamp - tp->lsndtime;
@@ -154,7 +154,7 @@ static void tcp_cwnd_restart(struct sock *sk, struct dst_entry *dst)
 
 /* Congestion state accounting after a packet has been sent. */
 static void tcp_event_data_sent(struct tcp_sock *tp,
-                                struct sk_buff *skb, struct sock *sk)
+                                struct sock *sk)
 {
         struct inet_connection_sock *icsk = inet_csk(sk);
         const u32 now = tcp_time_stamp;
@@ -295,11 +295,11 @@ static u16 tcp_select_window(struct sock *sk)
 }
 
 /* Packet ECN state for a SYN-ACK */
-static inline void TCP_ECN_send_synack(struct tcp_sock *tp, struct sk_buff *skb)
+static inline void TCP_ECN_send_synack(const struct tcp_sock *tp, struct sk_buff *skb)
 {
-        TCP_SKB_CB(skb)->flags &= ~TCPHDR_CWR;
+        TCP_SKB_CB(skb)->tcp_flags &= ~TCPHDR_CWR;
         if (!(tp->ecn_flags & TCP_ECN_OK))
-                TCP_SKB_CB(skb)->flags &= ~TCPHDR_ECE;
+                TCP_SKB_CB(skb)->tcp_flags &= ~TCPHDR_ECE;
 }
 
 /* Packet ECN state for a SYN.  */
@@ -309,13 +309,13 @@ static inline void TCP_ECN_send_syn(struct sock *sk, struct sk_buff *skb)
 
         tp->ecn_flags = 0;
         if (sysctl_tcp_ecn == 1) {
-                TCP_SKB_CB(skb)->flags |= TCPHDR_ECE | TCPHDR_CWR;
+                TCP_SKB_CB(skb)->tcp_flags |= TCPHDR_ECE | TCPHDR_CWR;
                 tp->ecn_flags = TCP_ECN_OK;
         }
 }
 
 static __inline__ void
-TCP_ECN_make_synack(struct request_sock *req, struct tcphdr *th)
+TCP_ECN_make_synack(const struct request_sock *req, struct tcphdr *th)
 {
         if (inet_rsk(req)->ecn_ok)
                 th->ece = 1;
@@ -356,7 +356,7 @@ static void tcp_init_nondata_skb(struct sk_buff *skb, u32 seq, u8 flags)
         skb->ip_summed = CHECKSUM_PARTIAL;
         skb->csum = 0;
 
-        TCP_SKB_CB(skb)->flags = flags;
+        TCP_SKB_CB(skb)->tcp_flags = flags;
         TCP_SKB_CB(skb)->sacked = 0;
 
         skb_shinfo(skb)->gso_segs = 1;
@@ -565,7 +565,8 @@ static void tcp_options_write(__be32 *ptr, struct tcp_sock *tp,
  */
 static unsigned tcp_syn_options(struct sock *sk, struct sk_buff *skb,
                                 struct tcp_out_options *opts,
-                                struct tcp_md5sig_key **md5) {
+                                struct tcp_md5sig_key **md5)
+{
         struct tcp_sock *tp = tcp_sk(sk);
         struct tcp_cookie_values *cvp = tp->cookie_values;
         unsigned remaining = MAX_TCP_OPTION_SPACE;
@@ -743,7 +744,8 @@ static unsigned tcp_synack_options(struct sock *sk,
  */
 static unsigned tcp_established_options(struct sock *sk, struct sk_buff *skb,
                                         struct tcp_out_options *opts,
-                                        struct tcp_md5sig_key **md5) {
+                                        struct tcp_md5sig_key **md5)
+{
         struct tcp_skb_cb *tcb = skb ? TCP_SKB_CB(skb) : NULL;
         struct tcp_sock *tp = tcp_sk(sk);
         unsigned size = 0;
@@ -826,7 +828,7 @@ static int tcp_transmit_skb(struct sock *sk, struct sk_buff *skb, int clone_it,
         tcb = TCP_SKB_CB(skb);
         memset(&opts, 0, sizeof(opts));
 
-        if (unlikely(tcb->flags & TCPHDR_SYN))
+        if (unlikely(tcb->tcp_flags & TCPHDR_SYN))
                 tcp_options_size = tcp_syn_options(sk, skb, &opts, &md5);
         else
                 tcp_options_size = tcp_established_options(sk, skb, &opts,
@@ -850,9 +852,9 @@ static int tcp_transmit_skb(struct sock *sk, struct sk_buff *skb, int clone_it,
         th->seq                 = htonl(tcb->seq);
         th->ack_seq             = htonl(tp->rcv_nxt);
         *(((__be16 *)th) + 6)   = htons(((tcp_header_size >> 2) << 12) |
-                                        tcb->flags);
+                                        tcb->tcp_flags);
 
-        if (unlikely(tcb->flags & TCPHDR_SYN)) {
+        if (unlikely(tcb->tcp_flags & TCPHDR_SYN)) {
                 /* RFC1323: The window in SYN & SYN/ACK segments
                  * is never scaled.
                  */
@@ -875,7 +877,7 @@ static int tcp_transmit_skb(struct sock *sk, struct sk_buff *skb, int clone_it,
         }
 
         tcp_options_write((__be32 *)(th + 1), tp, &opts);
-        if (likely((tcb->flags & TCPHDR_SYN) == 0))
+        if (likely((tcb->tcp_flags & TCPHDR_SYN) == 0))
                 TCP_ECN_send(sk, skb, tcp_header_size);
 
 #ifdef CONFIG_TCP_MD5SIG
@@ -889,11 +891,11 @@ static int tcp_transmit_skb(struct sock *sk, struct sk_buff *skb, int clone_it,
 
         icsk->icsk_af_ops->send_check(sk, skb);
 
-        if (likely(tcb->flags & TCPHDR_ACK))
+        if (likely(tcb->tcp_flags & TCPHDR_ACK))
                 tcp_event_ack_sent(sk, tcp_skb_pcount(skb));
 
         if (skb->len != tcp_header_size)
-                tcp_event_data_sent(tp, skb, sk);
+                tcp_event_data_sent(tp, sk);
 
         if (after(tcb->end_seq, tp->snd_nxt) || tcb->seq == tcb->end_seq)
                 TCP_ADD_STATS(sock_net(sk), TCP_MIB_OUTSEGS,
@@ -926,7 +928,7 @@ static void tcp_queue_skb(struct sock *sk, struct sk_buff *skb)
 }
 
 /* Initialize TSO segments for a packet. */
-static void tcp_set_skb_tso_segs(struct sock *sk, struct sk_buff *skb,
+static void tcp_set_skb_tso_segs(const struct sock *sk, struct sk_buff *skb,
                                  unsigned int mss_now)
 {
         if (skb->len <= mss_now || !sk_can_gso(sk) ||
@@ -947,7 +949,7 @@ static void tcp_set_skb_tso_segs(struct sock *sk, struct sk_buff *skb,
 /* When a modification to fackets out becomes necessary, we need to check
  * skb is counted to fackets_out or not.
  */
-static void tcp_adjust_fackets_out(struct sock *sk, struct sk_buff *skb,
+static void tcp_adjust_fackets_out(struct sock *sk, const struct sk_buff *skb,
                                    int decr)
 {
         struct tcp_sock *tp = tcp_sk(sk);
@@ -962,7 +964,7 @@ static void tcp_adjust_fackets_out(struct sock *sk, struct sk_buff *skb,
 /* Pcount in the middle of the write queue got changed, we need to do various
  * tweaks to fix counters
  */
-static void tcp_adjust_pcount(struct sock *sk, struct sk_buff *skb, int decr)
+static void tcp_adjust_pcount(struct sock *sk, const struct sk_buff *skb, int decr)
 {
         struct tcp_sock *tp = tcp_sk(sk);
 
@@ -1032,9 +1034,9 @@ int tcp_fragment(struct sock *sk, struct sk_buff *skb, u32 len,
         TCP_SKB_CB(skb)->end_seq = TCP_SKB_CB(buff)->seq;
 
         /* PSH and FIN should only be set in the second packet. */
-        flags = TCP_SKB_CB(skb)->flags;
-        TCP_SKB_CB(skb)->flags = flags & ~(TCPHDR_FIN | TCPHDR_PSH);
-        TCP_SKB_CB(buff)->flags = flags;
+        flags = TCP_SKB_CB(skb)->tcp_flags;
+        TCP_SKB_CB(skb)->tcp_flags = flags & ~(TCPHDR_FIN | TCPHDR_PSH);
+        TCP_SKB_CB(buff)->tcp_flags = flags;
         TCP_SKB_CB(buff)->sacked = TCP_SKB_CB(skb)->sacked;
 
         if (!skb_shinfo(skb)->nr_frags && skb->ip_summed != CHECKSUM_PARTIAL) {
@@ -1094,14 +1096,16 @@ static void __pskb_trim_head(struct sk_buff *skb, int len)
         eat = len;
         k = 0;
         for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) {
-                if (skb_shinfo(skb)->frags[i].size <= eat) {
-                        put_page(skb_shinfo(skb)->frags[i].page);
-                        eat -= skb_shinfo(skb)->frags[i].size;
+                int size = skb_frag_size(&skb_shinfo(skb)->frags[i]);
+
+                if (size <= eat) {
+                        skb_frag_unref(skb, i);
+                        eat -= size;
                 } else {
                         skb_shinfo(skb)->frags[k] = skb_shinfo(skb)->frags[i];
                         if (eat) {
                                 skb_shinfo(skb)->frags[k].page_offset += eat;
-                                skb_shinfo(skb)->frags[k].size -= eat;
+                                skb_frag_size_sub(&skb_shinfo(skb)->frags[k], eat);
                                 eat = 0;
                         }
                         k++;
@@ -1144,10 +1148,10 @@ int tcp_trim_head(struct sock *sk, struct sk_buff *skb, u32 len)
 }
 
 /* Calculate MSS. Not accounting for SACKs here.  */
-int tcp_mtu_to_mss(struct sock *sk, int pmtu)
+int tcp_mtu_to_mss(const struct sock *sk, int pmtu)
 {
-        struct tcp_sock *tp = tcp_sk(sk);
-        struct inet_connection_sock *icsk = inet_csk(sk);
+        const struct tcp_sock *tp = tcp_sk(sk);
+        const struct inet_connection_sock *icsk = inet_csk(sk);
         int mss_now;
 
         /* Calculate base mss without TCP options:
@@ -1173,10 +1177,10 @@ int tcp_mtu_to_mss(struct sock *sk, int pmtu)
 }
 
 /* Inverse of above */
-int tcp_mss_to_mtu(struct sock *sk, int mss)
+int tcp_mss_to_mtu(const struct sock *sk, int mss)
 {
-        struct tcp_sock *tp = tcp_sk(sk);
-        struct inet_connection_sock *icsk = inet_csk(sk);
+        const struct tcp_sock *tp = tcp_sk(sk);
+        const struct inet_connection_sock *icsk = inet_csk(sk);
         int mtu;
 
         mtu = mss +
@@ -1250,8 +1254,8 @@ EXPORT_SYMBOL(tcp_sync_mss);
  */
 unsigned int tcp_current_mss(struct sock *sk)
 {
-        struct tcp_sock *tp = tcp_sk(sk);
-        struct dst_entry *dst = __sk_dst_get(sk);
+        const struct tcp_sock *tp = tcp_sk(sk);
+        const struct dst_entry *dst = __sk_dst_get(sk);
         u32 mss_now;
         unsigned header_len;
         struct tcp_out_options opts;
@@ -1311,10 +1315,10 @@ static void tcp_cwnd_validate(struct sock *sk)
  * modulo only when the receiver window alone is the limiting factor or
  * when we would be allowed to send the split-due-to-Nagle skb fully.
  */
-static unsigned int tcp_mss_split_point(struct sock *sk, struct sk_buff *skb,
+static unsigned int tcp_mss_split_point(const struct sock *sk, const struct sk_buff *skb,
                                         unsigned int mss_now, unsigned int cwnd)
 {
-        struct tcp_sock *tp = tcp_sk(sk);
+        const struct tcp_sock *tp = tcp_sk(sk);
         u32 needed, window, cwnd_len;
 
         window = tcp_wnd_end(tp) - TCP_SKB_CB(skb)->seq;
@@ -1334,13 +1338,14 @@ static unsigned int tcp_mss_split_point(struct sock *sk, struct sk_buff *skb,
 /* Can at least one segment of SKB be sent right now, according to the
  * congestion window rules?  If so, return how many segments are allowed.
  */
-static inline unsigned int tcp_cwnd_test(struct tcp_sock *tp,
-                                         struct sk_buff *skb)
+static inline unsigned int tcp_cwnd_test(const struct tcp_sock *tp,
+                                         const struct sk_buff *skb)
 {
         u32 in_flight, cwnd;
 
         /* Don't be strict about the congestion window for the final FIN.  */
-        if ((TCP_SKB_CB(skb)->flags & TCPHDR_FIN) && tcp_skb_pcount(skb) == 1)
+        if ((TCP_SKB_CB(skb)->tcp_flags & TCPHDR_FIN) &&
+            tcp_skb_pcount(skb) == 1)
                 return 1;
 
         in_flight = tcp_packets_in_flight(tp);
@@ -1355,7 +1360,7 @@ static inline unsigned int tcp_cwnd_test(struct tcp_sock *tp,
  * This must be invoked the first time we consider transmitting
  * SKB onto the wire.
  */
-static int tcp_init_tso_segs(struct sock *sk, struct sk_buff *skb,
+static int tcp_init_tso_segs(const struct sock *sk, struct sk_buff *skb,
                              unsigned int mss_now)
 {
         int tso_segs = tcp_skb_pcount(skb);
@@ -1393,7 +1398,7 @@ static inline int tcp_nagle_check(const struct tcp_sock *tp,
 /* Return non-zero if the Nagle test allows this packet to be
  * sent now.
  */
-static inline int tcp_nagle_test(struct tcp_sock *tp, struct sk_buff *skb,
+static inline int tcp_nagle_test(const struct tcp_sock *tp, const struct sk_buff *skb,
                                  unsigned int cur_mss, int nonagle)
 {
         /* Nagle rule does not apply to frames, which sit in the middle of the
@@ -1409,7 +1414,7 @@ static inline int tcp_nagle_test(struct tcp_sock *tp, struct sk_buff *skb,
          * Nagle can be ignored during F-RTO too (see RFC4138).
          */
         if (tcp_urg_mode(tp) || (tp->frto_counter == 2) ||
-            (TCP_SKB_CB(skb)->flags & TCPHDR_FIN))
+            (TCP_SKB_CB(skb)->tcp_flags & TCPHDR_FIN))
                 return 1;
 
         if (!tcp_nagle_check(tp, skb, cur_mss, nonagle))
@@ -1419,7 +1424,7 @@ static inline int tcp_nagle_test(struct tcp_sock *tp, struct sk_buff *skb,
 }
 
 /* Does at least the first segment of SKB fit into the send window? */
-static inline int tcp_snd_wnd_test(struct tcp_sock *tp, struct sk_buff *skb,
+static inline int tcp_snd_wnd_test(const struct tcp_sock *tp, const struct sk_buff *skb,
                                    unsigned int cur_mss)
 {
         u32 end_seq = TCP_SKB_CB(skb)->end_seq;
@@ -1434,10 +1439,10 @@ static inline int tcp_snd_wnd_test(struct tcp_sock *tp, struct sk_buff *skb,
  * should be put on the wire right now.  If so, it returns the number of
  * packets allowed by the congestion window.
  */
-static unsigned int tcp_snd_test(struct sock *sk, struct sk_buff *skb,
+static unsigned int tcp_snd_test(const struct sock *sk, struct sk_buff *skb,
                                  unsigned int cur_mss, int nonagle)
 {
-        struct tcp_sock *tp = tcp_sk(sk);
+        const struct tcp_sock *tp = tcp_sk(sk);
         unsigned int cwnd_quota;
 
         tcp_init_tso_segs(sk, skb, cur_mss);
@@ -1455,7 +1460,7 @@ static unsigned int tcp_snd_test(struct sock *sk, struct sk_buff *skb,
 /* Test if sending is allowed right now. */
 int tcp_may_send_now(struct sock *sk)
 {
-        struct tcp_sock *tp = tcp_sk(sk);
+        const struct tcp_sock *tp = tcp_sk(sk);
         struct sk_buff *skb = tcp_send_head(sk);
 
         return skb &&
@@ -1497,9 +1502,9 @@ static int tso_fragment(struct sock *sk, struct sk_buff *skb, unsigned int len,
         TCP_SKB_CB(skb)->end_seq = TCP_SKB_CB(buff)->seq;
 
         /* PSH and FIN should only be set in the second packet. */
-        flags = TCP_SKB_CB(skb)->flags;
-        TCP_SKB_CB(skb)->flags = flags & ~(TCPHDR_FIN | TCPHDR_PSH);
-        TCP_SKB_CB(buff)->flags = flags;
+        flags = TCP_SKB_CB(skb)->tcp_flags;
+        TCP_SKB_CB(skb)->tcp_flags = flags & ~(TCPHDR_FIN | TCPHDR_PSH);
+        TCP_SKB_CB(buff)->tcp_flags = flags;
 
         /* This packet was never sent out yet, so no SACK bits. */
         TCP_SKB_CB(buff)->sacked = 0;
@@ -1530,7 +1535,7 @@ static int tcp_tso_should_defer(struct sock *sk, struct sk_buff *skb)
         u32 send_win, cong_win, limit, in_flight;
         int win_divisor;
 
-        if (TCP_SKB_CB(skb)->flags & TCPHDR_FIN)
+        if (TCP_SKB_CB(skb)->tcp_flags & TCPHDR_FIN)
                 goto send_now;
 
         if (icsk->icsk_ca_state != TCP_CA_Open)
@@ -1657,7 +1662,7 @@ static int tcp_mtu_probe(struct sock *sk)
 
         TCP_SKB_CB(nskb)->seq = TCP_SKB_CB(skb)->seq;
         TCP_SKB_CB(nskb)->end_seq = TCP_SKB_CB(skb)->seq + probe_size;
-        TCP_SKB_CB(nskb)->flags = TCPHDR_ACK;
+        TCP_SKB_CB(nskb)->tcp_flags = TCPHDR_ACK;
         TCP_SKB_CB(nskb)->sacked = 0;
         nskb->csum = 0;
         nskb->ip_summed = skb->ip_summed;
@@ -1677,11 +1682,11 @@ static int tcp_mtu_probe(struct sock *sk)
                 if (skb->len <= copy) {
                         /* We've eaten all the data from this skb.
                          * Throw it away. */
-                        TCP_SKB_CB(nskb)->flags |= TCP_SKB_CB(skb)->flags;
+                        TCP_SKB_CB(nskb)->tcp_flags |= TCP_SKB_CB(skb)->tcp_flags;
                         tcp_unlink_write_queue(skb, sk);
                         sk_wmem_free_skb(sk, skb);
                 } else {
-                        TCP_SKB_CB(nskb)->flags |= TCP_SKB_CB(skb)->flags &
+                        TCP_SKB_CB(nskb)->tcp_flags |= TCP_SKB_CB(skb)->tcp_flags &
                                                    ~(TCPHDR_FIN|TCPHDR_PSH);
                         if (!skb_shinfo(skb)->nr_frags) {
                                 skb_pull(skb, copy);
@@ -1796,11 +1801,13 @@ static int tcp_write_xmit(struct sock *sk, unsigned int mss_now, int nonagle,
                 tcp_event_new_data_sent(sk, skb);
 
                 tcp_minshall_update(tp, mss_now, skb);
-                sent_pkts++;
+                sent_pkts += tcp_skb_pcount(skb);
 
                 if (push_one)
                         break;
         }
+        if (inet_csk(sk)->icsk_ca_state == TCP_CA_Recovery)
+                tp->prr_out += sent_pkts;
 
         if (likely(sent_pkts)) {
                 tcp_cwnd_validate(sk);
@@ -1985,7 +1992,7 @@ static void tcp_collapse_retrans(struct sock *sk, struct sk_buff *skb)
         TCP_SKB_CB(skb)->end_seq = TCP_SKB_CB(next_skb)->end_seq;
 
         /* Merge over control information. This moves PSH/FIN etc. over */
-        TCP_SKB_CB(skb)->flags |= TCP_SKB_CB(next_skb)->flags;
+        TCP_SKB_CB(skb)->tcp_flags |= TCP_SKB_CB(next_skb)->tcp_flags;
 
         /* All done, get rid of second SKB and account for it so
          * packet counting does not break.
@@ -2003,7 +2010,7 @@ static void tcp_collapse_retrans(struct sock *sk, struct sk_buff *skb)
 }
 
 /* Check if coalescing SKBs is legal. */
-static int tcp_can_collapse(struct sock *sk, struct sk_buff *skb)
+static int tcp_can_collapse(const struct sock *sk, const struct sk_buff *skb)
 {
         if (tcp_skb_pcount(skb) > 1)
                 return 0;
@@ -2033,7 +2040,7 @@ static void tcp_retrans_try_collapse(struct sock *sk, struct sk_buff *to,
 
         if (!sysctl_tcp_retrans_collapse)
                 return;
-        if (TCP_SKB_CB(skb)->flags & TCPHDR_SYN)
+        if (TCP_SKB_CB(skb)->tcp_flags & TCPHDR_SYN)
                 return;
 
         tcp_for_write_queue_from_safe(skb, tmp, sk) {
@@ -2125,12 +2132,12 @@ int tcp_retransmit_skb(struct sock *sk, struct sk_buff *skb)
          * since it is cheap to do so and saves bytes on the network.
          */
         if (skb->len > 0 &&
-            (TCP_SKB_CB(skb)->flags & TCPHDR_FIN) &&
+            (TCP_SKB_CB(skb)->tcp_flags & TCPHDR_FIN) &&
             tp->snd_una == (TCP_SKB_CB(skb)->end_seq - 1)) {
                 if (!pskb_trim(skb, 0)) {
                         /* Reuse, even though it does some unnecessary work */
                         tcp_init_nondata_skb(skb, TCP_SKB_CB(skb)->end_seq - 1,
-                                             TCP_SKB_CB(skb)->flags);
+                                             TCP_SKB_CB(skb)->tcp_flags);
                         skb->ip_summed = CHECKSUM_NONE;
                 }
         }
@@ -2179,7 +2186,7 @@ int tcp_retransmit_skb(struct sock *sk, struct sk_buff *skb)
 static int tcp_can_forward_retransmit(struct sock *sk)
 {
         const struct inet_connection_sock *icsk = inet_csk(sk);
-        struct tcp_sock *tp = tcp_sk(sk);
+        const struct tcp_sock *tp = tcp_sk(sk);
 
         /* Forward retransmissions are possible only during Recovery. */
         if (icsk->icsk_ca_state != TCP_CA_Recovery)
@@ -2294,6 +2301,9 @@ begin_fwd:
                         return;
                 NET_INC_STATS_BH(sock_net(sk), mib_idx);
 
+                if (inet_csk(sk)->icsk_ca_state == TCP_CA_Recovery)
+                        tp->prr_out += tcp_skb_pcount(skb);
+
                 if (skb == tcp_write_queue_head(sk))
                         inet_csk_reset_xmit_timer(sk, ICSK_TIME_RETRANS,
                                                   inet_csk(sk)->icsk_rto,
@@ -2317,7 +2327,7 @@ void tcp_send_fin(struct sock *sk)
         mss_now = tcp_current_mss(sk);
 
         if (tcp_send_head(sk) != NULL) {
-                TCP_SKB_CB(skb)->flags |= TCPHDR_FIN;
+                TCP_SKB_CB(skb)->tcp_flags |= TCPHDR_FIN;
                 TCP_SKB_CB(skb)->end_seq++;
                 tp->write_seq++;
         } else {
@@ -2379,11 +2389,11 @@ int tcp_send_synack(struct sock *sk)
         struct sk_buff *skb;
 
         skb = tcp_write_queue_head(sk);
-        if (skb == NULL || !(TCP_SKB_CB(skb)->flags & TCPHDR_SYN)) {
+        if (skb == NULL || !(TCP_SKB_CB(skb)->tcp_flags & TCPHDR_SYN)) {
                 printk(KERN_DEBUG "tcp_send_synack: wrong queue state\n");
                 return -EFAULT;
         }
-        if (!(TCP_SKB_CB(skb)->flags & TCPHDR_ACK)) {
+        if (!(TCP_SKB_CB(skb)->tcp_flags & TCPHDR_ACK)) {
                 if (skb_cloned(skb)) {
                         struct sk_buff *nskb = skb_copy(skb, GFP_ATOMIC);
                         if (nskb == NULL)
@@ -2397,7 +2407,7 @@ int tcp_send_synack(struct sock *sk)
                         skb = nskb;
                 }
 
-                TCP_SKB_CB(skb)->flags |= TCPHDR_ACK;
+                TCP_SKB_CB(skb)->tcp_flags |= TCPHDR_ACK;
                 TCP_ECN_send_synack(tcp_sk(sk), skb);
         }
         TCP_SKB_CB(skb)->when = tcp_time_stamp;
@@ -2542,7 +2552,7 @@ EXPORT_SYMBOL(tcp_make_synack);
 /* Do all connect socket setups that can be done AF independent. */
 static void tcp_connect_init(struct sock *sk)
 {
-        struct dst_entry *dst = __sk_dst_get(sk);
+        const struct dst_entry *dst = __sk_dst_get(sk);
         struct tcp_sock *tp = tcp_sk(sk);
         __u8 rcv_wscale;
 
@@ -2794,13 +2804,13 @@ int tcp_write_wakeup(struct sock *sk)
                 if (seg_size < TCP_SKB_CB(skb)->end_seq - TCP_SKB_CB(skb)->seq ||
                     skb->len > mss) {
                         seg_size = min(seg_size, mss);
-                        TCP_SKB_CB(skb)->flags |= TCPHDR_PSH;
+                        TCP_SKB_CB(skb)->tcp_flags |= TCPHDR_PSH;
                         if (tcp_fragment(sk, skb, seg_size, mss))
                                 return -1;
                 } else if (!tcp_skb_pcount(skb))
                         tcp_set_skb_tso_segs(sk, skb, mss);
 
-                TCP_SKB_CB(skb)->flags |= TCPHDR_PSH;
+                TCP_SKB_CB(skb)->tcp_flags |= TCPHDR_PSH;
                 TCP_SKB_CB(skb)->when = tcp_time_stamp;
                 err = tcp_transmit_skb(sk, skb, 1, GFP_ATOMIC);
                 if (!err)
diff --git a/net/ipv4/tcp_timer.c b/net/ipv4/tcp_timer.c
index ecd44b0c45f1..2e0f0af76c19 100644
--- a/net/ipv4/tcp_timer.c
+++ b/net/ipv4/tcp_timer.c
@@ -334,7 +334,6 @@ void tcp_retransmit_timer(struct sock *sk)
                  * connection. If the socket is an orphan, time it out,
                  * we cannot allow such beasts to hang infinitely.
                  */
-#ifdef TCP_DEBUG
                 struct inet_sock *inet = inet_sk(sk);
                 if (sk->sk_family == AF_INET) {
                         LIMIT_NETDEBUG(KERN_DEBUG "TCP: Peer %pI4:%u/%u unexpectedly shrunk window %u:%u (repaired)\n",
@@ -349,7 +348,6 @@ void tcp_retransmit_timer(struct sock *sk)
                                inet->inet_num, tp->snd_una, tp->snd_nxt);
                 }
 #endif
-#endif
                 if (tcp_time_stamp - tp->rcv_tstamp > TCP_RTO_MAX) {
                         tcp_write_err(sk);
                         goto out;
diff --git a/net/ipv4/udp.c b/net/ipv4/udp.c
index 1b5a19340a95..ab0966df1e2a 100644
--- a/net/ipv4/udp.c
+++ b/net/ipv4/udp.c
@@ -1267,7 +1267,7 @@ int udp_disconnect(struct sock *sk, int flags)
         sk->sk_state = TCP_CLOSE;
         inet->inet_daddr = 0;
         inet->inet_dport = 0;
-        sock_rps_save_rxhash(sk, 0);
+        sock_rps_reset_rxhash(sk);
         sk->sk_bound_dev_if = 0;
         if (!(sk->sk_userlocks & SOCK_BINDADDR_LOCK))
                 inet_reset_saddr(sk);
@@ -1355,7 +1355,7 @@ static int __udp_queue_rcv_skb(struct sock *sk, struct sk_buff *skb)
         int rc;
 
         if (inet_sk(sk)->inet_daddr)
-                sock_rps_save_rxhash(sk, skb->rxhash);
+                sock_rps_save_rxhash(sk, skb);
 
         rc = ip_queue_rcv_skb(sk, skb);
         if (rc < 0) {
@@ -1397,6 +1397,8 @@ int udp_queue_rcv_skb(struct sock *sk, struct sk_buff *skb)
         nf_reset(skb);
 
         if (up->encap_type) {
+                int (*encap_rcv)(struct sock *sk, struct sk_buff *skb);
+
                 /*
                  * This is an encapsulation socket so pass the skb to
                  * the socket's udp_encap_rcv() hook. Otherwise, just
@@ -1409,11 +1411,11 @@ int udp_queue_rcv_skb(struct sock *sk, struct sk_buff *skb)
                  */
 
                 /* if we're overly short, let UDP handle it */
-                if (skb->len > sizeof(struct udphdr) &&
-                    up->encap_rcv != NULL) {
+                encap_rcv = ACCESS_ONCE(up->encap_rcv);
+                if (skb->len > sizeof(struct udphdr) && encap_rcv != NULL) {
                         int ret;
 
-                        ret = (*up->encap_rcv)(sk, skb);
+                        ret = encap_rcv(sk, skb);
                         if (ret <= 0) {
                                 UDP_INC_STATS_BH(sock_net(sk),
                                                  UDP_MIB_INDATAGRAMS,
@@ -1461,10 +1463,9 @@ int udp_queue_rcv_skb(struct sock *sk, struct sk_buff *skb)
                 }
         }
 
-        if (rcu_dereference_raw(sk->sk_filter)) {
-                if (udp_lib_checksum_complete(skb))
-                        goto drop;
-        }
+        if (rcu_access_pointer(sk->sk_filter) &&
+            udp_lib_checksum_complete(skb))
+                goto drop;
 
 
         if (sk_rcvqueues_full(sk, skb))
@@ -2038,7 +2039,7 @@ static void udp_seq_stop(struct seq_file *seq, void *v)
                 spin_unlock_bh(&state->udp_table->hash[state->bucket].lock);
 }
 
-static int udp_seq_open(struct inode *inode, struct file *file)
+int udp_seq_open(struct inode *inode, struct file *file)
 {
         struct udp_seq_afinfo *afinfo = PDE(inode)->data;
         struct udp_iter_state *s;
@@ -2054,6 +2055,7 @@ static int udp_seq_open(struct inode *inode, struct file *file)
         s->udp_table            = afinfo->udp_table;
         return err;
 }
+EXPORT_SYMBOL(udp_seq_open);
 
 /* ------------------------------------------------------------------------ */
 int udp_proc_register(struct net *net, struct udp_seq_afinfo *afinfo)
@@ -2061,17 +2063,12 @@ int udp_proc_register(struct net *net, struct udp_seq_afinfo *afinfo)
         struct proc_dir_entry *p;
         int rc = 0;
 
-        afinfo->seq_fops.open           = udp_seq_open;
-        afinfo->seq_fops.read           = seq_read;
-        afinfo->seq_fops.llseek         = seq_lseek;
-        afinfo->seq_fops.release        = seq_release_net;
-
         afinfo->seq_ops.start           = udp_seq_start;
         afinfo->seq_ops.next            = udp_seq_next;
         afinfo->seq_ops.stop            = udp_seq_stop;
 
         p = proc_create_data(afinfo->name, S_IRUGO, net->proc_net,
-                             &afinfo->seq_fops, afinfo);
+                             afinfo->seq_fops, afinfo);
         if (!p)
                 rc = -ENOMEM;
         return rc;
@@ -2121,14 +2118,20 @@ int udp4_seq_show(struct seq_file *seq, void *v)
         return 0;
 }
 
+static const struct file_operations udp_afinfo_seq_fops = {
+        .owner    = THIS_MODULE,
+        .open     = udp_seq_open,
+        .read     = seq_read,
+        .llseek   = seq_lseek,
+        .release  = seq_release_net
+};
+
 /* ------------------------------------------------------------------------ */
 static struct udp_seq_afinfo udp4_seq_afinfo = {
         .name           = "udp",
         .family         = AF_INET,
         .udp_table      = &udp_table,
-        .seq_fops       = {
-                .owner  =       THIS_MODULE,
-        },
+        .seq_fops       = &udp_afinfo_seq_fops,
         .seq_ops        = {
                 .show           = udp4_seq_show,
         },
diff --git a/net/ipv4/udplite.c b/net/ipv4/udplite.c
index aee9963f7f5a..12e9499a1a6c 100644
--- a/net/ipv4/udplite.c
+++ b/net/ipv4/udplite.c
@@ -10,6 +10,7 @@
  *              as published by the Free Software Foundation; either version
  *              2 of the License, or (at your option) any later version.
  */
+#include <linux/export.h>
 #include "udp_impl.h"
 
 struct udp_table        udplite_table __read_mostly;
@@ -71,13 +72,20 @@ static struct inet_protosw udplite4_protosw = {
 };
 
 #ifdef CONFIG_PROC_FS
+
+static const struct file_operations udplite_afinfo_seq_fops = {
+        .owner    = THIS_MODULE,
+        .open     = udp_seq_open,
+        .read     = seq_read,
+        .llseek   = seq_lseek,
+        .release  = seq_release_net
+};
+
 static struct udp_seq_afinfo udplite4_seq_afinfo = {
         .name           = "udplite",
         .family         = AF_INET,
         .udp_table      = &udplite_table,
-        .seq_fops       = {
-                .owner  =       THIS_MODULE,
-        },
+        .seq_fops       = &udplite_afinfo_seq_fops,
         .seq_ops        = {
                 .show           = udp4_seq_show,
         },
diff --git a/net/ipv4/xfrm4_policy.c b/net/ipv4/xfrm4_policy.c
index fc5368ad2b0d..a0b4c5da8d43 100644
--- a/net/ipv4/xfrm4_policy.c
+++ b/net/ipv4/xfrm4_policy.c
@@ -79,13 +79,13 @@ static int xfrm4_fill_dst(struct xfrm_dst *xdst, struct net_device *dev,
         struct rtable *rt = (struct rtable *)xdst->route;
         const struct flowi4 *fl4 = &fl->u.ip4;
 
-        rt->rt_key_dst = fl4->daddr;
-        rt->rt_key_src = fl4->saddr;
-        rt->rt_key_tos = fl4->flowi4_tos;
-        rt->rt_route_iif = fl4->flowi4_iif;
-        rt->rt_iif = fl4->flowi4_iif;
-        rt->rt_oif = fl4->flowi4_oif;
-        rt->rt_mark = fl4->flowi4_mark;
+        xdst->u.rt.rt_key_dst = fl4->daddr;
+        xdst->u.rt.rt_key_src = fl4->saddr;
+        xdst->u.rt.rt_key_tos = fl4->flowi4_tos;
+        xdst->u.rt.rt_route_iif = fl4->flowi4_iif;
+        xdst->u.rt.rt_iif = fl4->flowi4_iif;
+        xdst->u.rt.rt_oif = fl4->flowi4_oif;
+        xdst->u.rt.rt_mark = fl4->flowi4_mark;
 
         xdst->u.dst.dev = dev;
         dev_hold(dev);
diff --git a/net/ipv4/xfrm4_state.c b/net/ipv4/xfrm4_state.c
index d9ac0a0058b5..9258e751baba 100644
--- a/net/ipv4/xfrm4_state.c
+++ b/net/ipv4/xfrm4_state.c
@@ -12,6 +12,7 @@
 #include <linux/pfkeyv2.h>
 #include <linux/ipsec.h>
 #include <linux/netfilter_ipv4.h>
+#include <linux/export.h>
 
 static int xfrm4_init_flags(struct xfrm_state *x)
 {
diff --git a/net/ipv6/addrconf.c b/net/ipv6/addrconf.c
index 12368c586068..cf88df82e2c2 100644
--- a/net/ipv6/addrconf.c
+++ b/net/ipv6/addrconf.c
@@ -87,6 +87,7 @@
 
 #include <linux/proc_fs.h>
 #include <linux/seq_file.h>
+#include <linux/export.h>
 
 /* Set to 3 to get tracing... */
 #define ACONF_DEBUG 2
@@ -428,7 +429,7 @@ static struct inet6_dev * ipv6_add_dev(struct net_device *dev)
         ndev->tstamp = jiffies;
         addrconf_sysctl_register(ndev);
         /* protected by rtnl_lock */
-        rcu_assign_pointer(dev->ip6_ptr, ndev);
+        RCU_INIT_POINTER(dev->ip6_ptr, ndev);
 
         /* Join all-node multicast group */
         ipv6_dev_mc_inc(dev, &in6addr_linklocal_allnodes);
@@ -824,12 +825,13 @@ static int ipv6_create_tempaddr(struct inet6_ifaddr *ifp, struct inet6_ifaddr *i
 {
         struct inet6_dev *idev = ifp->idev;
         struct in6_addr addr, *tmpaddr;
-        unsigned long tmp_prefered_lft, tmp_valid_lft, tmp_cstamp, tmp_tstamp, age;
+        unsigned long tmp_prefered_lft, tmp_valid_lft, tmp_tstamp, age;
         unsigned long regen_advance;
         int tmp_plen;
         int ret = 0;
         int max_addresses;
         u32 addr_flags;
+        unsigned long now = jiffies;
 
         write_lock(&idev->lock);
         if (ift) {
@@ -874,7 +876,7 @@ retry:
                 goto out;
         }
         memcpy(&addr.s6_addr[8], idev->rndid, 8);
-        age = (jiffies - ifp->tstamp) / HZ;
+        age = (now - ifp->tstamp) / HZ;
         tmp_valid_lft = min_t(__u32,
                               ifp->valid_lft,
                               idev->cnf.temp_valid_lft + age);
@@ -884,7 +886,6 @@ retry:
                                  idev->cnf.max_desync_factor);
         tmp_plen = ifp->prefix_len;
         max_addresses = idev->cnf.max_addresses;
-        tmp_cstamp = ifp->cstamp;
         tmp_tstamp = ifp->tstamp;
         spin_unlock_bh(&ifp->lock);
 
@@ -929,7 +930,7 @@ retry:
         ift->ifpub = ifp;
         ift->valid_lft = tmp_valid_lft;
         ift->prefered_lft = tmp_prefered_lft;
-        ift->cstamp = tmp_cstamp;
+        ift->cstamp = now;
         ift->tstamp = tmp_tstamp;
         spin_unlock_bh(&ift->lock);
 
@@ -1713,6 +1714,40 @@ addrconf_prefix_route(struct in6_addr *pfx, int plen, struct net_device *dev,
         ip6_route_add(&cfg);
 }
 
+
+static struct rt6_info *addrconf_get_prefix_route(const struct in6_addr *pfx,
+                                                  int plen,
+                                                  const struct net_device *dev,
+                                                  u32 flags, u32 noflags)
+{
+        struct fib6_node *fn;
+        struct rt6_info *rt = NULL;
+        struct fib6_table *table;
+
+        table = fib6_get_table(dev_net(dev), RT6_TABLE_PREFIX);
+        if (table == NULL)
+                return NULL;
+
+        write_lock_bh(&table->tb6_lock);
+        fn = fib6_locate(&table->tb6_root, pfx, plen, NULL, 0);
+        if (!fn)
+                goto out;
+        for (rt = fn->leaf; rt; rt = rt->dst.rt6_next) {
+                if (rt->rt6i_dev->ifindex != dev->ifindex)
+                        continue;
+                if ((rt->rt6i_flags & flags) != flags)
+                        continue;
+                if ((noflags != 0) && ((rt->rt6i_flags & flags) != 0))
+                        continue;
+                dst_hold(&rt->dst);
+                break;
+        }
+out:
+        write_unlock_bh(&table->tb6_lock);
+        return rt;
+}
+
+
 /* Create "default" multicast route to the interface */
 
 static void addrconf_add_mroute(struct net_device *dev)
@@ -1842,10 +1877,13 @@ void addrconf_prefix_rcv(struct net_device *dev, u8 *opt, int len)
                 if (addrconf_finite_timeout(rt_expires))
                         rt_expires *= HZ;
 
-                rt = rt6_lookup(net, &pinfo->prefix, NULL,
-                                dev->ifindex, 1);
+                rt = addrconf_get_prefix_route(&pinfo->prefix,
+                                               pinfo->prefix_len,
+                                               dev,
+                                               RTF_ADDRCONF | RTF_PREFIX_RT,
+                                               RTF_GATEWAY | RTF_DEFAULT);
 
-                if (rt && addrconf_is_prefix_route(rt)) {
+                if (rt) {
                         /* Autoconf prefix route */
                         if (valid_lft == 0) {
                                 ip6_del_rt(rt);
@@ -1999,25 +2037,50 @@ ok:
 #ifdef CONFIG_IPV6_PRIVACY
                         read_lock_bh(&in6_dev->lock);
                         /* update all temporary addresses in the list */
-                        list_for_each_entry(ift, &in6_dev->tempaddr_list, tmp_list) {
-                                /*
-                                 * When adjusting the lifetimes of an existing
-                                 * temporary address, only lower the lifetimes.
-                                 * Implementations must not increase the
-                                 * lifetimes of an existing temporary address
-                                 * when processing a Prefix Information Option.
-                                 */
+                        list_for_each_entry(ift, &in6_dev->tempaddr_list,
+                                            tmp_list) {
+                                int age, max_valid, max_prefered;
+
                                 if (ifp != ift->ifpub)
                                         continue;
 
+                                /*
+                                 * RFC 4941 section 3.3:
+                                 * If a received option will extend the lifetime
+                                 * of a public address, the lifetimes of
+                                 * temporary addresses should be extended,
+                                 * subject to the overall constraint that no
+                                 * temporary addresses should ever remain
+                                 * "valid" or "preferred" for a time longer than
+                                 * (TEMP_VALID_LIFETIME) or
+                                 * (TEMP_PREFERRED_LIFETIME - DESYNC_FACTOR),
+                                 * respectively.
+                                 */
+                                age = (now - ift->cstamp) / HZ;
+                                max_valid = in6_dev->cnf.temp_valid_lft - age;
+                                if (max_valid < 0)
+                                        max_valid = 0;
+
+                                max_prefered = in6_dev->cnf.temp_prefered_lft -
+                                               in6_dev->cnf.max_desync_factor -
+                                               age;
+                                if (max_prefered < 0)
+                                        max_prefered = 0;
+
+                                if (valid_lft > max_valid)
+                                        valid_lft = max_valid;
+
+                                if (prefered_lft > max_prefered)
+                                        prefered_lft = max_prefered;
+
                                 spin_lock(&ift->lock);
                                 flags = ift->flags;
-                                if (ift->valid_lft > valid_lft &&
-                                    ift->valid_lft - valid_lft > (jiffies - ift->tstamp) / HZ)
-                                        ift->valid_lft = valid_lft + (jiffies - ift->tstamp) / HZ;
-                                if (ift->prefered_lft > prefered_lft &&
-                                    ift->prefered_lft - prefered_lft > (jiffies - ift->tstamp) / HZ)
-                                        ift->prefered_lft = prefered_lft + (jiffies - ift->tstamp) / HZ;
+                                ift->valid_lft = valid_lft;
+                                ift->prefered_lft = prefered_lft;
+                                ift->tstamp = now;
+                                if (prefered_lft > 0)
+                                        ift->flags &= ~IFA_F_DEPRECATED;
+
                                 spin_unlock(&ift->lock);
                                 if (!(flags&IFA_F_TENTATIVE))
                                         ipv6_ifa_notify(0, ift);
@@ -2025,9 +2088,11 @@ ok:
 
                         if ((create || list_empty(&in6_dev->tempaddr_list)) && in6_dev->cnf.use_tempaddr > 0) {
                                 /*
-                                 * When a new public address is created as described in [ADDRCONF],
-                                 * also create a new temporary address. Also create a temporary
-                                 * address if it's enabled but no temporary address currently exists.
+                                 * When a new public address is created as
+                                 * described in [ADDRCONF], also create a new
+                                 * temporary address. Also create a temporary
+                                 * address if it's enabled but no temporary
+                                 * address currently exists.
                                  */
                                 read_unlock_bh(&in6_dev->lock);
                                 ipv6_create_tempaddr(ifp, NULL);
@@ -2706,7 +2771,7 @@ static int addrconf_ifdown(struct net_device *dev, int how)
                 idev->dead = 1;
 
                 /* protected by rtnl_lock */
-                rcu_assign_pointer(dev->ip6_ptr, NULL);
+                RCU_INIT_POINTER(dev->ip6_ptr, NULL);
 
                 /* Step 1.5: remove snmp6 entry */
                 snmp6_unregister_dev(idev);
@@ -2969,12 +3034,12 @@ static void addrconf_dad_completed(struct inet6_ifaddr *ifp)
 
         ipv6_ifa_notify(RTM_NEWADDR, ifp);
 
-        /* If added prefix is link local and forwarding is off,
-           start sending router solicitations.
+        /* If added prefix is link local and we are prepared to process
+           router advertisements, start sending router solicitations.
          */
 
-        if ((ifp->idev->cnf.forwarding == 0 ||
-             ifp->idev->cnf.forwarding == 2) &&
+        if (((ifp->idev->cnf.accept_ra == 1 && !ifp->idev->cnf.forwarding) ||
+             ifp->idev->cnf.accept_ra == 2) &&
             ifp->idev->cnf.rtr_solicits > 0 &&
             (dev->flags&IFF_LOOPBACK) == 0 &&
             (ipv6_addr_type(&ifp->addr) & IPV6_ADDR_LINKLOCAL)) {
diff --git a/net/ipv6/addrconf_core.c b/net/ipv6/addrconf_core.c
index 6b03826552e1..399287e595d7 100644
--- a/net/ipv6/addrconf_core.c
+++ b/net/ipv6/addrconf_core.c
@@ -3,6 +3,7 @@
  * not configured or static.
  */
 
+#include <linux/export.h>
 #include <net/ipv6.h>
 
 #define IPV6_ADDR_SCOPE_TYPE(scope)     ((scope) << 16)
diff --git a/net/ipv6/datagram.c b/net/ipv6/datagram.c
index b46e9f88ce37..e2480691c220 100644
--- a/net/ipv6/datagram.c
+++ b/net/ipv6/datagram.c
@@ -297,10 +297,6 @@ void ipv6_local_rxpmtu(struct sock *sk, struct flowi6 *fl6, u32 mtu)
         ipv6_addr_copy(&iph->daddr, &fl6->daddr);
 
         mtu_info = IP6CBMTU(skb);
-        if (!mtu_info) {
-                kfree_skb(skb);
-                return;
-        }
 
         mtu_info->ip6m_mtu = mtu;
         mtu_info->ip6m_addr.sin6_family = AF_INET6;
diff --git a/net/ipv6/exthdrs.c b/net/ipv6/exthdrs.c
index 79a485e8a700..bf22a225f422 100644
--- a/net/ipv6/exthdrs.c
+++ b/net/ipv6/exthdrs.c
@@ -30,6 +30,7 @@
 #include <linux/in6.h>
 #include <linux/icmpv6.h>
 #include <linux/slab.h>
+#include <linux/export.h>
 
 #include <net/dst.h>
 #include <net/sock.h>
@@ -273,12 +274,12 @@ static int ipv6_destopt_rcv(struct sk_buff *skb)
 #if defined(CONFIG_IPV6_MIP6) || defined(CONFIG_IPV6_MIP6_MODULE)
         __u16 dstbuf;
 #endif
-        struct dst_entry *dst;
+        struct dst_entry *dst = skb_dst(skb);
 
         if (!pskb_may_pull(skb, skb_transport_offset(skb) + 8) ||
             !pskb_may_pull(skb, (skb_transport_offset(skb) +
                                  ((skb_transport_header(skb)[1] + 1) << 3)))) {
-                IP6_INC_STATS_BH(dev_net(skb_dst(skb)->dev), ip6_dst_idev(skb_dst(skb)),
+                IP6_INC_STATS_BH(dev_net(dst->dev), ip6_dst_idev(dst),
                                  IPSTATS_MIB_INHDRERRORS);
                 kfree_skb(skb);
                 return -1;
@@ -289,9 +290,7 @@ static int ipv6_destopt_rcv(struct sk_buff *skb)
         dstbuf = opt->dst1;
 #endif
 
-        dst = dst_clone(skb_dst(skb));
         if (ip6_parse_tlv(tlvprocdestopt_lst, skb)) {
-                dst_release(dst);
                 skb->transport_header += (skb_transport_header(skb)[1] + 1) << 3;
                 opt = IP6CB(skb);
 #if defined(CONFIG_IPV6_MIP6) || defined(CONFIG_IPV6_MIP6_MODULE)
@@ -304,7 +303,6 @@ static int ipv6_destopt_rcv(struct sk_buff *skb)
 
         IP6_INC_STATS_BH(dev_net(dst->dev),
                          ip6_dst_idev(dst), IPSTATS_MIB_INHDRERRORS);
-        dst_release(dst);
         return -1;
 }
 
diff --git a/net/ipv6/exthdrs_core.c b/net/ipv6/exthdrs_core.c
index 14ed0a955b56..37f548b7f6dc 100644
--- a/net/ipv6/exthdrs_core.c
+++ b/net/ipv6/exthdrs_core.c
@@ -2,6 +2,7 @@
  * IPv6 library code, needed by static components when full IPv6 support is
  * not configured or static.
  */
+#include <linux/export.h>
 #include <net/ipv6.h>
 
 /*
diff --git a/net/ipv6/fib6_rules.c b/net/ipv6/fib6_rules.c
index 34d244df907d..295571576f83 100644
--- a/net/ipv6/fib6_rules.c
+++ b/net/ipv6/fib6_rules.c
@@ -14,6 +14,7 @@
  */
 
 #include <linux/netdevice.h>
+#include <linux/export.h>
 
 #include <net/fib_rules.h>
 #include <net/ipv6.h>
diff --git a/net/ipv6/icmp.c b/net/ipv6/icmp.c
index 11900417b1cc..90868fb42757 100644
--- a/net/ipv6/icmp.c
+++ b/net/ipv6/icmp.c
@@ -490,7 +490,8 @@ void icmpv6_send(struct sk_buff *skb, u8 type, u8 code, __u32 info)
                 goto out_dst_release;
         }
 
-        idev = in6_dev_get(skb->dev);
+        rcu_read_lock();
+        idev = __in6_dev_get(skb->dev);
 
         err = ip6_append_data(sk, icmpv6_getfrag, &msg,
                               len + sizeof(struct icmp6hdr),
@@ -500,19 +501,16 @@ void icmpv6_send(struct sk_buff *skb, u8 type, u8 code, __u32 info)
         if (err) {
                 ICMP6_INC_STATS_BH(net, idev, ICMP6_MIB_OUTERRORS);
                 ip6_flush_pending_frames(sk);
-                goto out_put;
+        } else {
+                err = icmpv6_push_pending_frames(sk, &fl6, &tmp_hdr,
+                                                 len + sizeof(struct icmp6hdr));
         }
-        err = icmpv6_push_pending_frames(sk, &fl6, &tmp_hdr, len + sizeof(struct icmp6hdr));
-
-out_put:
-        if (likely(idev != NULL))
-                in6_dev_put(idev);
+        rcu_read_unlock();
 out_dst_release:
         dst_release(dst);
 out:
         icmpv6_xmit_unlock(sk);
 }
-
 EXPORT_SYMBOL(icmpv6_send);
 
 static void icmpv6_echo_reply(struct sk_buff *skb)
@@ -569,7 +567,7 @@ static void icmpv6_echo_reply(struct sk_buff *skb)
         if (hlimit < 0)
                 hlimit = ip6_dst_hoplimit(dst);
 
-        idev = in6_dev_get(skb->dev);
+        idev = __in6_dev_get(skb->dev);
 
         msg.skb = skb;
         msg.offset = 0;
@@ -583,13 +581,10 @@ static void icmpv6_echo_reply(struct sk_buff *skb)
         if (err) {
                 ICMP6_INC_STATS_BH(net, idev, ICMP6_MIB_OUTERRORS);
                 ip6_flush_pending_frames(sk);
-                goto out_put;
+        } else {
+                err = icmpv6_push_pending_frames(sk, &fl6, &tmp_hdr,
+                                                 skb->len + sizeof(struct icmp6hdr));
         }
-        err = icmpv6_push_pending_frames(sk, &fl6, &tmp_hdr, skb->len + sizeof(struct icmp6hdr));
-
-out_put:
-        if (likely(idev != NULL))
-                in6_dev_put(idev);
         dst_release(dst);
 out:
         icmpv6_xmit_unlock(sk);
@@ -840,8 +835,7 @@ static int __net_init icmpv6_sk_init(struct net *net)
                 /* Enough space for 2 64K ICMP packets, including
                  * sk_buff struct overhead.
                  */
-                sk->sk_sndbuf =
-                        (2 * ((64 * 1024) + sizeof(struct sk_buff)));
+                sk->sk_sndbuf = 2 * SKB_TRUESIZE(64 * 1024);
         }
         return 0;
 
diff --git a/net/ipv6/inet6_connection_sock.c b/net/ipv6/inet6_connection_sock.c
index 8a58e8cf6646..fee46d5a2f12 100644
--- a/net/ipv6/inet6_connection_sock.c
+++ b/net/ipv6/inet6_connection_sock.c
@@ -211,6 +211,7 @@ int inet6_csk_xmit(struct sk_buff *skb, struct flowi *fl_unused)
         struct flowi6 fl6;
         struct dst_entry *dst;
         struct in6_addr *final_p, final;
+        int res;
 
         memset(&fl6, 0, sizeof(fl6));
         fl6.flowi6_proto = sk->sk_protocol;
@@ -241,12 +242,14 @@ int inet6_csk_xmit(struct sk_buff *skb, struct flowi *fl_unused)
                 __inet6_csk_dst_store(sk, dst, NULL, NULL);
         }
 
-        skb_dst_set(skb, dst_clone(dst));
+        rcu_read_lock();
+        skb_dst_set_noref(skb, dst);
 
         /* Restore final destination back after routing done */
         ipv6_addr_copy(&fl6.daddr, &np->daddr);
 
-        return ip6_xmit(sk, skb, &fl6, np->opt);
+        res = ip6_xmit(sk, skb, &fl6, np->opt, np->tclass);
+        rcu_read_unlock();
+        return res;
 }
-
 EXPORT_SYMBOL_GPL(inet6_csk_xmit);
diff --git a/net/ipv6/ip6_fib.c b/net/ipv6/ip6_fib.c
index 320d91d20ad7..93718f3db79b 100644
--- a/net/ipv6/ip6_fib.c
+++ b/net/ipv6/ip6_fib.c
@@ -28,10 +28,6 @@
 #include <linux/list.h>
 #include <linux/slab.h>
 
-#ifdef  CONFIG_PROC_FS
-#include <linux/proc_fs.h>
-#endif
-
 #include <net/ipv6.h>
 #include <net/ndisc.h>
 #include <net/addrconf.h>
diff --git a/net/ipv6/ip6_flowlabel.c b/net/ipv6/ip6_flowlabel.c
index 543039450193..4566dbd916d3 100644
--- a/net/ipv6/ip6_flowlabel.c
+++ b/net/ipv6/ip6_flowlabel.c
@@ -21,6 +21,7 @@
 #include <linux/proc_fs.h>
 #include <linux/seq_file.h>
 #include <linux/slab.h>
+#include <linux/export.h>
 
 #include <net/net_namespace.h>
 #include <net/sock.h>
diff --git a/net/ipv6/ip6_output.c b/net/ipv6/ip6_output.c
index 4c882cf4e8a1..84d0bd5cac93 100644
--- a/net/ipv6/ip6_output.c
+++ b/net/ipv6/ip6_output.c
@@ -180,7 +180,7 @@ int ip6_output(struct sk_buff *skb)
  */
 
 int ip6_xmit(struct sock *sk, struct sk_buff *skb, struct flowi6 *fl6,
-             struct ipv6_txoptions *opt)
+             struct ipv6_txoptions *opt, int tclass)
 {
         struct net *net = sock_net(sk);
         struct ipv6_pinfo *np = inet6_sk(sk);
@@ -190,7 +190,6 @@ int ip6_xmit(struct sock *sk, struct sk_buff *skb, struct flowi6 *fl6,
         u8  proto = fl6->flowi6_proto;
         int seg_len = skb->len;
         int hlimit = -1;
-        int tclass = 0;
         u32 mtu;
 
         if (opt) {
@@ -228,10 +227,8 @@ int ip6_xmit(struct sock *sk, struct sk_buff *skb, struct flowi6 *fl6,
         /*
          *      Fill in the IPv6 header
          */
-        if (np) {
-                tclass = np->tclass;
+        if (np)
                 hlimit = np->hop_limit;
-        }
         if (hlimit < 0)
                 hlimit = ip6_dst_hoplimit(dst);
 
@@ -1126,7 +1123,7 @@ static inline int ip6_ufo_append_data(struct sock *sk,
                         hh_len + fragheaderlen + transhdrlen + 20,
                         (flags & MSG_DONTWAIT), &err);
                 if (skb == NULL)
-                        return -ENOMEM;
+                        return err;
 
                 /* reserve space for Hardware header */
                 skb_reserve(skb, hh_len);
@@ -1193,6 +1190,7 @@ int ip6_append_data(struct sock *sk, int getfrag(void *from, char *to,
         struct sk_buff *skb;
         unsigned int maxfraglen, fragheaderlen;
         int exthdrlen;
+        int dst_exthdrlen;
         int hh_len;
         int mtu;
         int copy;
@@ -1248,7 +1246,7 @@ int ip6_append_data(struct sock *sk, int getfrag(void *from, char *to,
                 np->cork.hop_limit = hlimit;
                 np->cork.tclass = tclass;
                 mtu = np->pmtudisc == IPV6_PMTUDISC_PROBE ?
-                      rt->dst.dev->mtu : dst_mtu(rt->dst.path);
+                      rt->dst.dev->mtu : dst_mtu(&rt->dst);
                 if (np->frag_size < mtu) {
                         if (np->frag_size)
                                 mtu = np->frag_size;
@@ -1259,16 +1257,17 @@ int ip6_append_data(struct sock *sk, int getfrag(void *from, char *to,
                 cork->length = 0;
                 sk->sk_sndmsg_page = NULL;
                 sk->sk_sndmsg_off = 0;
-                exthdrlen = rt->dst.header_len + (opt ? opt->opt_flen : 0) -
-                            rt->rt6i_nfheader_len;
+                exthdrlen = (opt ? opt->opt_flen : 0) - rt->rt6i_nfheader_len;
                 length += exthdrlen;
                 transhdrlen += exthdrlen;
+                dst_exthdrlen = rt->dst.header_len;
         } else {
                 rt = (struct rt6_info *)cork->dst;
                 fl6 = &inet->cork.fl.u.ip6;
                 opt = np->cork.opt;
                 transhdrlen = 0;
                 exthdrlen = 0;
+                dst_exthdrlen = 0;
                 mtu = cork->fragsize;
         }
 
@@ -1368,6 +1367,8 @@ alloc_new_skb:
                         else
                                 alloclen = datalen + fragheaderlen;
 
+                        alloclen += dst_exthdrlen;
+
                         /*
                          * The last fragment gets additional space at tail.
                          * Note: we overallocate on fragments with MSG_MODE
@@ -1419,9 +1420,9 @@ alloc_new_skb:
                         /*
                          *      Find where to start putting bytes
                          */
-                        data = skb_put(skb, fraglen);
-                        skb_set_network_header(skb, exthdrlen);
-                        data += fragheaderlen;
+                        data = skb_put(skb, fraglen + dst_exthdrlen);
+                        skb_set_network_header(skb, exthdrlen + dst_exthdrlen);
+                        data += fragheaderlen + dst_exthdrlen;
                         skb->transport_header = (skb->network_header +
                                                  fragheaderlen);
                         if (fraggap) {
@@ -1434,6 +1435,7 @@ alloc_new_skb:
                                 pskb_trim_unique(skb_prev, maxfraglen);
                         }
                         copy = datalen - transhdrlen - fraggap;
+
                         if (copy < 0) {
                                 err = -EINVAL;
                                 kfree_skb(skb);
@@ -1448,6 +1450,7 @@ alloc_new_skb:
                         length -= datalen - fraggap;
                         transhdrlen = 0;
                         exthdrlen = 0;
+                        dst_exthdrlen = 0;
                         csummode = CHECKSUM_NONE;
 
                         /*
@@ -1480,13 +1483,13 @@ alloc_new_skb:
                         if (page && (left = PAGE_SIZE - off) > 0) {
                                 if (copy >= left)
                                         copy = left;
-                                if (page != frag->page) {
+                                if (page != skb_frag_page(frag)) {
                                         if (i == MAX_SKB_FRAGS) {
                                                 err = -EMSGSIZE;
                                                 goto error;
                                         }
-                                        get_page(page);
                                         skb_fill_page_desc(skb, i, page, sk->sk_sndmsg_off, 0);
+                                        skb_frag_ref(skb, i);
                                         frag = &skb_shinfo(skb)->frags[i];
                                 }
                         } else if(i < MAX_SKB_FRAGS) {
@@ -1506,12 +1509,14 @@ alloc_new_skb:
                                 err = -EMSGSIZE;
                                 goto error;
                         }
-                        if (getfrag(from, page_address(frag->page)+frag->page_offset+frag->size, offset, copy, skb->len, skb) < 0) {
+                        if (getfrag(from,
+                                    skb_frag_address(frag) + skb_frag_size(frag),
+                                    offset, copy, skb->len, skb) < 0) {
                                 err = -EFAULT;
                                 goto error;
                         }
                         sk->sk_sndmsg_off += copy;
-                        frag->size += copy;
+                        skb_frag_size_add(frag, copy);
                         skb->len += copy;
                         skb->data_len += copy;
                         skb->truesize += copy;
diff --git a/net/ipv6/ip6_tunnel.c b/net/ipv6/ip6_tunnel.c
index 0bc98886c383..bdc15c9003d7 100644
--- a/net/ipv6/ip6_tunnel.c
+++ b/net/ipv6/ip6_tunnel.c
@@ -218,8 +218,8 @@ ip6_tnl_link(struct ip6_tnl_net *ip6n, struct ip6_tnl *t)
 {
         struct ip6_tnl __rcu **tp = ip6_tnl_bucket(ip6n, &t->parms);
 
-        rcu_assign_pointer(t->next , rtnl_dereference(*tp));
-        rcu_assign_pointer(*tp, t);
+        RCU_INIT_POINTER(t->next , rtnl_dereference(*tp));
+        RCU_INIT_POINTER(*tp, t);
 }
 
 /**
@@ -237,7 +237,7 @@ ip6_tnl_unlink(struct ip6_tnl_net *ip6n, struct ip6_tnl *t)
              (iter = rtnl_dereference(*tp)) != NULL;
              tp = &iter->next) {
                 if (t == iter) {
-                        rcu_assign_pointer(*tp, t->next);
+                        RCU_INIT_POINTER(*tp, t->next);
                         break;
                 }
         }
@@ -350,7 +350,7 @@ ip6_tnl_dev_uninit(struct net_device *dev)
         struct ip6_tnl_net *ip6n = net_generic(net, ip6_tnl_net_id);
 
         if (dev == ip6n->fb_tnl_dev)
-                rcu_assign_pointer(ip6n->tnls_wc[0], NULL);
+                RCU_INIT_POINTER(ip6n->tnls_wc[0], NULL);
         else
                 ip6_tnl_unlink(ip6n, t);
         ip6_tnl_dst_reset(t);
@@ -889,7 +889,7 @@ static int ip6_tnl_xmit2(struct sk_buff *skb,
         struct net_device_stats *stats = &t->dev->stats;
         struct ipv6hdr *ipv6h = ipv6_hdr(skb);
         struct ipv6_tel_txoption opt;
-        struct dst_entry *dst;
+        struct dst_entry *dst = NULL, *ndst = NULL;
         struct net_device *tdev;
         int mtu;
         unsigned int max_headroom = sizeof(struct ipv6hdr);
@@ -897,19 +897,20 @@ static int ip6_tnl_xmit2(struct sk_buff *skb,
         int err = -1;
         int pkt_len;
 
-        if ((dst = ip6_tnl_dst_check(t)) != NULL)
-                dst_hold(dst);
-        else {
-                dst = ip6_route_output(net, NULL, fl6);
+        if (!fl6->flowi6_mark)
+                dst = ip6_tnl_dst_check(t);
+        if (!dst) {
+                ndst = ip6_route_output(net, NULL, fl6);
 
-                if (dst->error)
+                if (ndst->error)
                         goto tx_err_link_failure;
-                dst = xfrm_lookup(net, dst, flowi6_to_flowi(fl6), NULL, 0);
-                if (IS_ERR(dst)) {
-                        err = PTR_ERR(dst);
-                        dst = NULL;
+                ndst = xfrm_lookup(net, ndst, flowi6_to_flowi(fl6), NULL, 0);
+                if (IS_ERR(ndst)) {
+                        err = PTR_ERR(ndst);
+                        ndst = NULL;
                         goto tx_err_link_failure;
                 }
+                dst = ndst;
         }
 
         tdev = dst->dev;
@@ -955,8 +956,12 @@ static int ip6_tnl_xmit2(struct sk_buff *skb,
                 skb = new_skb;
         }
         skb_dst_drop(skb);
-        skb_dst_set(skb, dst_clone(dst));
-
+        if (fl6->flowi6_mark) {
+                skb_dst_set(skb, dst);
+                ndst = NULL;
+        } else {
+                skb_dst_set_noref(skb, dst);
+        }
         skb->transport_header = skb->network_header;
 
         proto = fl6->flowi6_proto;
@@ -987,13 +992,14 @@ static int ip6_tnl_xmit2(struct sk_buff *skb,
                 stats->tx_errors++;
                 stats->tx_aborted_errors++;
         }
-        ip6_tnl_dst_store(t, dst);
+        if (ndst)
+                ip6_tnl_dst_store(t, ndst);
         return 0;
 tx_err_link_failure:
         stats->tx_carrier_errors++;
         dst_link_failure(skb);
 tx_err_dst_release:
-        dst_release(dst);
+        dst_release(ndst);
         return err;
 }
 
@@ -1020,9 +1026,11 @@ ip4ip6_tnl_xmit(struct sk_buff *skb, struct net_device *dev)
 
         dsfield = ipv4_get_dsfield(iph);
 
-        if ((t->parms.flags & IP6_TNL_F_USE_ORIG_TCLASS))
+        if (t->parms.flags & IP6_TNL_F_USE_ORIG_TCLASS)
                 fl6.flowlabel |= htonl((__u32)iph->tos << IPV6_TCLASS_SHIFT)
                                           & IPV6_TCLASS_MASK;
+        if (t->parms.flags & IP6_TNL_F_USE_ORIG_FWMARK)
+                fl6.flowi6_mark = skb->mark;
 
         err = ip6_tnl_xmit2(skb, dev, dsfield, &fl6, encap_limit, &mtu);
         if (err != 0) {
@@ -1069,10 +1077,12 @@ ip6ip6_tnl_xmit(struct sk_buff *skb, struct net_device *dev)
         fl6.flowi6_proto = IPPROTO_IPV6;
 
         dsfield = ipv6_get_dsfield(ipv6h);
-        if ((t->parms.flags & IP6_TNL_F_USE_ORIG_TCLASS))
+        if (t->parms.flags & IP6_TNL_F_USE_ORIG_TCLASS)
                 fl6.flowlabel |= (*(__be32 *) ipv6h & IPV6_TCLASS_MASK);
-        if ((t->parms.flags & IP6_TNL_F_USE_ORIG_FLOWLABEL))
+        if (t->parms.flags & IP6_TNL_F_USE_ORIG_FLOWLABEL)
                 fl6.flowlabel |= (*(__be32 *) ipv6h & IPV6_FLOWLABEL_MASK);
+        if (t->parms.flags & IP6_TNL_F_USE_ORIG_FWMARK)
+                fl6.flowi6_mark = skb->mark;
 
         err = ip6_tnl_xmit2(skb, dev, dsfield, &fl6, encap_limit, &mtu);
         if (err != 0) {
@@ -1439,7 +1449,7 @@ static int __net_init ip6_fb_tnl_dev_init(struct net_device *dev)
 
         t->parms.proto = IPPROTO_IPV6;
         dev_hold(dev);
-        rcu_assign_pointer(ip6n->tnls_wc[0], t);
+        RCU_INIT_POINTER(ip6n->tnls_wc[0], t);
         return 0;
 }
 
diff --git a/net/ipv6/ip6mr.c b/net/ipv6/ip6mr.c
index def0538e2413..449a9185b8f2 100644
--- a/net/ipv6/ip6mr.c
+++ b/net/ipv6/ip6mr.c
@@ -51,6 +51,7 @@
 #include <linux/pim.h>
 #include <net/addrconf.h>
 #include <linux/netfilter_ipv6.h>
+#include <linux/export.h>
 #include <net/ip6_checksum.h>
 
 struct mr6_table {
diff --git a/net/ipv6/ipv6_sockglue.c b/net/ipv6/ipv6_sockglue.c
index 2fbda5fc4cc4..c99e3ee9781f 100644
--- a/net/ipv6/ipv6_sockglue.c
+++ b/net/ipv6/ipv6_sockglue.c
@@ -343,7 +343,7 @@ static int do_ipv6_setsockopt(struct sock *sk, int level, int optname,
                 break;
 
         case IPV6_TRANSPARENT:
-                if (!capable(CAP_NET_ADMIN)) {
+                if (valbool && !capable(CAP_NET_ADMIN) && !capable(CAP_NET_RAW)) {
                         retv = -EPERM;
                         break;
                 }
diff --git a/net/ipv6/ndisc.c b/net/ipv6/ndisc.c
index 9da6e02eaaeb..44e5b7f2a6c1 100644
--- a/net/ipv6/ndisc.c
+++ b/net/ipv6/ndisc.c
@@ -370,17 +370,14 @@ static int ndisc_constructor(struct neighbour *neigh)
         struct neigh_parms *parms;
         int is_multicast = ipv6_addr_is_multicast(addr);
 
-        rcu_read_lock();
         in6_dev = in6_dev_get(dev);
         if (in6_dev == NULL) {
-                rcu_read_unlock();
                 return -EINVAL;
         }
 
         parms = in6_dev->nd_parms;
         __neigh_parms_put(neigh->parms);
         neigh->parms = neigh_parms_clone(parms);
-        rcu_read_unlock();
 
         neigh->type = is_multicast ? RTN_MULTICAST : RTN_UNICAST;
         if (!dev->header_ops) {
@@ -533,7 +530,8 @@ void ndisc_send_skb(struct sk_buff *skb,
 
         skb_dst_set(skb, dst);
 
-        idev = in6_dev_get(dst->dev);
+        rcu_read_lock();
+        idev = __in6_dev_get(dst->dev);
         IP6_UPD_PO_STATS(net, idev, IPSTATS_MIB_OUT, skb->len);
 
         err = NF_HOOK(NFPROTO_IPV6, NF_INET_LOCAL_OUT, skb, NULL, dst->dev,
@@ -543,8 +541,7 @@ void ndisc_send_skb(struct sk_buff *skb,
                 ICMP6_INC_STATS(net, idev, ICMP6_MIB_OUTMSGS);
         }
 
-        if (likely(idev != NULL))
-                in6_dev_put(idev);
+        rcu_read_unlock();
 }
 
 EXPORT_SYMBOL(ndisc_send_skb);
@@ -1039,7 +1036,7 @@ static void ndisc_recv_rs(struct sk_buff *skb)
         if (skb->len < sizeof(*rs_msg))
                 return;
 
-        idev = in6_dev_get(skb->dev);
+        idev = __in6_dev_get(skb->dev);
         if (!idev) {
                 if (net_ratelimit())
                         ND_PRINTK1("ICMP6 RS: can't find in6 device\n");
@@ -1080,7 +1077,7 @@ static void ndisc_recv_rs(struct sk_buff *skb)
                 neigh_release(neigh);
         }
 out:
-        in6_dev_put(idev);
+        return;
 }
 
 static void ndisc_ra_useropt(struct sk_buff *ra, struct nd_opt_hdr *opt)
@@ -1179,7 +1176,7 @@ static void ndisc_router_discovery(struct sk_buff *skb)
          *      set the RA_RECV flag in the interface
          */
 
-        in6_dev = in6_dev_get(skb->dev);
+        in6_dev = __in6_dev_get(skb->dev);
         if (in6_dev == NULL) {
                 ND_PRINTK0(KERN_ERR
                            "ICMPv6 RA: can't find inet6 device for %s.\n",
@@ -1188,7 +1185,6 @@ static void ndisc_router_discovery(struct sk_buff *skb)
         }
 
         if (!ndisc_parse_options(opt, optlen, &ndopts)) {
-                in6_dev_put(in6_dev);
                 ND_PRINTK2(KERN_WARNING
                            "ICMP6 RA: invalid ND options\n");
                 return;
@@ -1225,6 +1221,9 @@ static void ndisc_router_discovery(struct sk_buff *skb)
         if (!in6_dev->cnf.accept_ra_defrtr)
                 goto skip_defrtr;
 
+        if (ipv6_chk_addr(dev_net(in6_dev->dev), &ipv6_hdr(skb)->saddr, NULL, 0))
+                goto skip_defrtr;
+
         lifetime = ntohs(ra_msg->icmph.icmp6_rt_lifetime);
 
 #ifdef CONFIG_IPV6_ROUTER_PREF
@@ -1255,7 +1254,6 @@ static void ndisc_router_discovery(struct sk_buff *skb)
                         ND_PRINTK0(KERN_ERR
                                    "ICMPv6 RA: %s() failed to add default route.\n",
                                    __func__);
-                        in6_dev_put(in6_dev);
                         return;
                 }
 
@@ -1265,7 +1263,6 @@ static void ndisc_router_discovery(struct sk_buff *skb)
                                    "ICMPv6 RA: %s() got default router without neighbour.\n",
                                    __func__);
                         dst_release(&rt->dst);
-                        in6_dev_put(in6_dev);
                         return;
                 }
                 neigh->flags |= NTF_ROUTER;
@@ -1349,6 +1346,9 @@ skip_linkparms:
                 goto out;
 
 #ifdef CONFIG_IPV6_ROUTE_INFO
+        if (ipv6_chk_addr(dev_net(in6_dev->dev), &ipv6_hdr(skb)->saddr, NULL, 0))
+                goto skip_routeinfo;
+
         if (in6_dev->cnf.accept_ra_rtr_pref && ndopts.nd_opts_ri) {
                 struct nd_opt_hdr *p;
                 for (p = ndopts.nd_opts_ri;
@@ -1366,6 +1366,8 @@ skip_linkparms:
                                       &ipv6_hdr(skb)->saddr);
                 }
         }
+
+skip_routeinfo:
 #endif
 
 #ifdef CONFIG_IPV6_NDISC_NODETYPE
@@ -1422,7 +1424,6 @@ out:
                 dst_release(&rt->dst);
         else if (neigh)
                 neigh_release(neigh);
-        in6_dev_put(in6_dev);
 }
 
 static void ndisc_redirect_rcv(struct sk_buff *skb)
@@ -1481,13 +1482,11 @@ static void ndisc_redirect_rcv(struct sk_buff *skb)
                 return;
         }
 
-        in6_dev = in6_dev_get(skb->dev);
+        in6_dev = __in6_dev_get(skb->dev);
         if (!in6_dev)
                 return;
-        if (in6_dev->cnf.forwarding || !in6_dev->cnf.accept_redirects) {
-                in6_dev_put(in6_dev);
+        if (in6_dev->cnf.forwarding || !in6_dev->cnf.accept_redirects)
                 return;
-        }
 
         /* RFC2461 8.1:
          *      The IP source address of the Redirect MUST be the same as the current
@@ -1497,7 +1496,6 @@ static void ndisc_redirect_rcv(struct sk_buff *skb)
         if (!ndisc_parse_options((u8*)(dest + 1), optlen, &ndopts)) {
                 ND_PRINTK2(KERN_WARNING
                            "ICMPv6 Redirect: invalid ND options\n");
-                in6_dev_put(in6_dev);
                 return;
         }
         if (ndopts.nd_opts_tgt_lladdr) {
@@ -1506,7 +1504,6 @@ static void ndisc_redirect_rcv(struct sk_buff *skb)
                 if (!lladdr) {
                         ND_PRINTK2(KERN_WARNING
                                    "ICMPv6 Redirect: invalid link-layer address length\n");
-                        in6_dev_put(in6_dev);
                         return;
                 }
         }
@@ -1518,7 +1515,6 @@ static void ndisc_redirect_rcv(struct sk_buff *skb)
                              on_link);
                 neigh_release(neigh);
         }
-        in6_dev_put(in6_dev);
 }
 
 void ndisc_send_redirect(struct sk_buff *skb, struct neighbour *neigh,
@@ -1651,7 +1647,8 @@ void ndisc_send_redirect(struct sk_buff *skb, struct neighbour *neigh,
                                              csum_partial(icmph, len, 0));
 
         skb_dst_set(buff, dst);
-        idev = in6_dev_get(dst->dev);
+        rcu_read_lock();
+        idev = __in6_dev_get(dst->dev);
         IP6_UPD_PO_STATS(net, idev, IPSTATS_MIB_OUT, skb->len);
         err = NF_HOOK(NFPROTO_IPV6, NF_INET_LOCAL_OUT, buff, NULL, dst->dev,
                       dst_output);
@@ -1660,8 +1657,7 @@ void ndisc_send_redirect(struct sk_buff *skb, struct neighbour *neigh,
                 ICMP6_INC_STATS(net, idev, ICMP6_MIB_OUTMSGS);
         }
 
-        if (likely(idev != NULL))
-                in6_dev_put(idev);
+        rcu_read_unlock();
         return;
 
 release:
diff --git a/net/ipv6/netfilter.c b/net/ipv6/netfilter.c
index 30fcee465448..db31561cc8df 100644
--- a/net/ipv6/netfilter.c
+++ b/net/ipv6/netfilter.c
@@ -3,6 +3,7 @@
 #include <linux/ipv6.h>
 #include <linux/netfilter.h>
 #include <linux/netfilter_ipv6.h>
+#include <linux/export.h>
 #include <net/dst.h>
 #include <net/ipv6.h>
 #include <net/ip6_route.h>
@@ -100,9 +101,16 @@ static int nf_ip6_route(struct net *net, struct dst_entry **dst,
                 .pinet6 = (struct ipv6_pinfo *) &fake_pinfo,
         };
         const void *sk = strict ? &fake_sk : NULL;
-
-        *dst = ip6_route_output(net, sk, &fl->u.ip6);
-        return (*dst)->error;
+        struct dst_entry *result;
+        int err;
+
+        result = ip6_route_output(net, sk, &fl->u.ip6);
+        err = result->error;
+        if (err)
+                dst_release(result);
+        else
+                *dst = result;
+        return err;
 }
 
 __sum16 nf_ip6_checksum(struct sk_buff *skb, unsigned int hook,
diff --git a/net/ipv6/netfilter/nf_conntrack_reasm.c b/net/ipv6/netfilter/nf_conntrack_reasm.c
index 085727263812..38f00b0298d3 100644
--- a/net/ipv6/netfilter/nf_conntrack_reasm.c
+++ b/net/ipv6/netfilter/nf_conntrack_reasm.c
@@ -182,7 +182,6 @@ fq_find(__be32 id, u32 user, struct in6_addr *src, struct in6_addr *dst)
         return container_of(q, struct nf_ct_frag6_queue, q);
 
 oom:
-        pr_debug("Can't alloc new queue\n");
         return NULL;
 }
 
@@ -370,16 +369,16 @@ nf_ct_frag6_reasm(struct nf_ct_frag6_queue *fq, struct net_device *dev)
                 struct sk_buff *clone;
                 int i, plen = 0;
 
-                if ((clone = alloc_skb(0, GFP_ATOMIC)) == NULL) {
-                        pr_debug("Can't alloc skb\n");
+                clone = alloc_skb(0, GFP_ATOMIC);
+                if (clone == NULL)
                         goto out_oom;
-                }
+
                 clone->next = head->next;
                 head->next = clone;
                 skb_shinfo(clone)->frag_list = skb_shinfo(head)->frag_list;
                 skb_frag_list_init(head);
-                for (i=0; i<skb_shinfo(head)->nr_frags; i++)
-                        plen += skb_shinfo(head)->frags[i].size;
+                for (i = 0; i < skb_shinfo(head)->nr_frags; i++)
+                        plen += skb_frag_size(&skb_shinfo(head)->frags[i]);
                 clone->len = clone->data_len = head->data_len - plen;
                 head->data_len -= clone->len;
                 head->len -= clone->len;
diff --git a/net/ipv6/proc.c b/net/ipv6/proc.c
index 18ff5df7ec02..1008ce94bc33 100644
--- a/net/ipv6/proc.c
+++ b/net/ipv6/proc.c
@@ -21,6 +21,7 @@
 #include <linux/proc_fs.h>
 #include <linux/seq_file.h>
 #include <linux/stddef.h>
+#include <linux/export.h>
 #include <net/net_namespace.h>
 #include <net/ip.h>
 #include <net/sock.h>
diff --git a/net/ipv6/raw.c b/net/ipv6/raw.c
index 343852e5c703..331af3b882ac 100644
--- a/net/ipv6/raw.c
+++ b/net/ipv6/raw.c
@@ -61,6 +61,7 @@
 
 #include <linux/proc_fs.h>
 #include <linux/seq_file.h>
+#include <linux/export.h>
 
 static struct raw_hashinfo raw_v6_hashinfo = {
         .lock = __RW_LOCK_UNLOCKED(raw_v6_hashinfo.lock),
@@ -130,14 +131,14 @@ static mh_filter_t __rcu *mh_filter __read_mostly;
 
 int rawv6_mh_filter_register(mh_filter_t filter)
 {
-        rcu_assign_pointer(mh_filter, filter);
+        RCU_INIT_POINTER(mh_filter, filter);
         return 0;
 }
 EXPORT_SYMBOL(rawv6_mh_filter_register);
 
 int rawv6_mh_filter_unregister(mh_filter_t filter)
 {
-        rcu_assign_pointer(mh_filter, NULL);
+        RCU_INIT_POINTER(mh_filter, NULL);
         synchronize_rcu();
         return 0;
 }
@@ -372,9 +373,9 @@ void raw6_icmp_error(struct sk_buff *skb, int nexthdr,
         read_unlock(&raw_v6_hashinfo.lock);
 }
 
-static inline int rawv6_rcv_skb(struct sock * sk, struct sk_buff * skb)
+static inline int rawv6_rcv_skb(struct sock *sk, struct sk_buff *skb)
 {
-        if ((raw6_sk(sk)->checksum || rcu_dereference_raw(sk->sk_filter)) &&
+        if ((raw6_sk(sk)->checksum || rcu_access_pointer(sk->sk_filter)) &&
             skb_checksum_complete(skb)) {
                 atomic_inc(&sk->sk_drops);
                 kfree_skb(skb);
@@ -542,8 +543,7 @@ static int rawv6_push_pending_frames(struct sock *sk, struct flowi6 *fl6,
                 goto out;
 
         offset = rp->offset;
-        total_len = inet_sk(sk)->cork.base.length - (skb_network_header(skb) -
-                                                     skb->data);
+        total_len = inet_sk(sk)->cork.base.length;
         if (offset >= total_len - 1) {
                 err = -EINVAL;
                 ip6_flush_pending_frames(sk);
diff --git a/net/ipv6/reassembly.c b/net/ipv6/reassembly.c
index 7b954e2539d0..dfb164e9051a 100644
--- a/net/ipv6/reassembly.c
+++ b/net/ipv6/reassembly.c
@@ -42,6 +42,7 @@
 #include <linux/jhash.h>
 #include <linux/skbuff.h>
 #include <linux/slab.h>
+#include <linux/export.h>
 
 #include <net/sock.h>
 #include <net/snmp.h>
@@ -464,8 +465,8 @@ static int ip6_frag_reasm(struct frag_queue *fq, struct sk_buff *prev,
                 head->next = clone;
                 skb_shinfo(clone)->frag_list = skb_shinfo(head)->frag_list;
                 skb_frag_list_init(head);
-                for (i=0; i<skb_shinfo(head)->nr_frags; i++)
-                        plen += skb_shinfo(head)->frags[i].size;
+                for (i = 0; i < skb_shinfo(head)->nr_frags; i++)
+                        plen += skb_frag_size(&skb_shinfo(head)->frags[i]);
                 clone->len = clone->data_len = head->data_len - plen;
                 head->data_len -= clone->len;
                 head->len -= clone->len;
diff --git a/net/ipv6/route.c b/net/ipv6/route.c
index fb545edef6ea..8473016bba4a 100644
--- a/net/ipv6/route.c
+++ b/net/ipv6/route.c
@@ -26,6 +26,7 @@
 
 #include <linux/capability.h>
 #include <linux/errno.h>
+#include <linux/export.h>
 #include <linux/types.h>
 #include <linux/times.h>
 #include <linux/socket.h>
@@ -1086,11 +1087,10 @@ struct dst_entry *icmp6_dst_alloc(struct net_device *dev,
         rt->dst.output  = ip6_output;
         dst_set_neighbour(&rt->dst, neigh);
         atomic_set(&rt->dst.__refcnt, 1);
-        dst_metric_set(&rt->dst, RTAX_HOPLIMIT, 255);
-
         ipv6_addr_copy(&rt->rt6i_dst.addr, addr);
         rt->rt6i_dst.plen = 128;
         rt->rt6i_idev     = idev;
+        dst_metric_set(&rt->dst, RTAX_HOPLIMIT, 255);
 
         spin_lock_bh(&icmp6_dst_lock);
         rt->dst.next = icmp6_dst_gc_list;
diff --git a/net/ipv6/sit.c b/net/ipv6/sit.c
index 00b15ac7a702..a7a18602a046 100644
--- a/net/ipv6/sit.c
+++ b/net/ipv6/sit.c
@@ -182,7 +182,7 @@ static void ipip6_tunnel_unlink(struct sit_net *sitn, struct ip_tunnel *t)
              (iter = rtnl_dereference(*tp)) != NULL;
              tp = &iter->next) {
                 if (t == iter) {
-                        rcu_assign_pointer(*tp, t->next);
+                        RCU_INIT_POINTER(*tp, t->next);
                         break;
                 }
         }
@@ -192,8 +192,8 @@ static void ipip6_tunnel_link(struct sit_net *sitn, struct ip_tunnel *t)
 {
         struct ip_tunnel __rcu **tp = ipip6_bucket(sitn, t);
 
-        rcu_assign_pointer(t->next, rtnl_dereference(*tp));
-        rcu_assign_pointer(*tp, t);
+        RCU_INIT_POINTER(t->next, rtnl_dereference(*tp));
+        RCU_INIT_POINTER(*tp, t);
 }
 
 static void ipip6_tunnel_clone_6rd(struct net_device *dev, struct sit_net *sitn)
@@ -391,7 +391,7 @@ ipip6_tunnel_add_prl(struct ip_tunnel *t, struct ip_tunnel_prl *a, int chg)
         p->addr = a->addr;
         p->flags = a->flags;
         t->prl_count++;
-        rcu_assign_pointer(t->prl, p);
+        RCU_INIT_POINTER(t->prl, p);
 out:
         return err;
 }
@@ -474,7 +474,7 @@ static void ipip6_tunnel_uninit(struct net_device *dev)
         struct sit_net *sitn = net_generic(net, sit_net_id);
 
         if (dev == sitn->fb_tunnel_dev) {
-                rcu_assign_pointer(sitn->tunnels_wc[0], NULL);
+                RCU_INIT_POINTER(sitn->tunnels_wc[0], NULL);
         } else {
                 ipip6_tunnel_unlink(sitn, netdev_priv(dev));
                 ipip6_tunnel_del_prl(netdev_priv(dev), NULL);
@@ -1176,7 +1176,7 @@ static int __net_init ipip6_fb_tunnel_init(struct net_device *dev)
         if (!dev->tstats)
                 return -ENOMEM;
         dev_hold(dev);
-        rcu_assign_pointer(sitn->tunnels_wc[0], tunnel);
+        RCU_INIT_POINTER(sitn->tunnels_wc[0], tunnel);
         return 0;
 }
 
diff --git a/net/ipv6/syncookies.c b/net/ipv6/syncookies.c
index ac838965ff34..5a0d6648bbbc 100644
--- a/net/ipv6/syncookies.c
+++ b/net/ipv6/syncookies.c
@@ -115,7 +115,7 @@ static __u32 check_tcp_syn_cookie(__u32 cookie, const struct in6_addr *saddr,
                 & COOKIEMASK;
 }
 
-__u32 cookie_v6_init_sequence(struct sock *sk, struct sk_buff *skb, __u16 *mssp)
+__u32 cookie_v6_init_sequence(struct sock *sk, const struct sk_buff *skb, __u16 *mssp)
 {
         const struct ipv6hdr *iph = ipv6_hdr(skb);
         const struct tcphdr *th = tcp_hdr(skb);
@@ -137,7 +137,7 @@ __u32 cookie_v6_init_sequence(struct sock *sk, struct sk_buff *skb, __u16 *mssp)
                                      jiffies / (HZ * 60), mssind);
 }
 
-static inline int cookie_check(struct sk_buff *skb, __u32 cookie)
+static inline int cookie_check(const struct sk_buff *skb, __u32 cookie)
 {
         const struct ipv6hdr *iph = ipv6_hdr(skb);
         const struct tcphdr *th = tcp_hdr(skb);
@@ -152,7 +152,7 @@ static inline int cookie_check(struct sk_buff *skb, __u32 cookie)
 struct sock *cookie_v6_check(struct sock *sk, struct sk_buff *skb)
 {
         struct tcp_options_received tcp_opt;
-        u8 *hash_location;
+        const u8 *hash_location;
         struct inet_request_sock *ireq;
         struct inet6_request_sock *ireq6;
         struct tcp_request_sock *treq;
diff --git a/net/ipv6/sysctl_net_ipv6.c b/net/ipv6/sysctl_net_ipv6.c
index 6dcf5e7d661b..166a57c47d39 100644
--- a/net/ipv6/sysctl_net_ipv6.c
+++ b/net/ipv6/sysctl_net_ipv6.c
@@ -10,6 +10,7 @@
 #include <linux/in6.h>
 #include <linux/ipv6.h>
 #include <linux/slab.h>
+#include <linux/export.h>
 #include <net/ndisc.h>
 #include <net/ipv6.h>
 #include <net/addrconf.h>
diff --git a/net/ipv6/tcp_ipv6.c b/net/ipv6/tcp_ipv6.c
index 7b8fc5794352..36131d122a6f 100644
--- a/net/ipv6/tcp_ipv6.c
+++ b/net/ipv6/tcp_ipv6.c
@@ -114,7 +114,7 @@ static __inline__ __sum16 tcp_v6_check(int len,
         return csum_ipv6_magic(saddr, daddr, len, IPPROTO_TCP, base);
 }
 
-static __u32 tcp_v6_init_sequence(struct sk_buff *skb)
+static __u32 tcp_v6_init_sequence(const struct sk_buff *skb)
 {
         return secure_tcpv6_sequence_number(ipv6_hdr(skb)->daddr.s6_addr32,
                                             ipv6_hdr(skb)->saddr.s6_addr32,
@@ -513,7 +513,7 @@ static int tcp_v6_send_synack(struct sock *sk, struct request_sock *req,
                 __tcp_v6_send_check(skb, &treq->loc_addr, &treq->rmt_addr);
 
                 ipv6_addr_copy(&fl6.daddr, &treq->rmt_addr);
-                err = ip6_xmit(sk, skb, &fl6, opt);
+                err = ip6_xmit(sk, skb, &fl6, opt, np->tclass);
                 err = net_xmit_eval(err);
         }
 
@@ -761,7 +761,7 @@ static int tcp_v6_md5_hash_pseudoheader(struct tcp_md5sig_pool *hp,
 
 static int tcp_v6_md5_hash_hdr(char *md5_hash, struct tcp_md5sig_key *key,
                                const struct in6_addr *daddr, struct in6_addr *saddr,
-                               struct tcphdr *th)
+                               const struct tcphdr *th)
 {
         struct tcp_md5sig_pool *hp;
         struct hash_desc *desc;
@@ -793,13 +793,14 @@ clear_hash_noput:
 }
 
 static int tcp_v6_md5_hash_skb(char *md5_hash, struct tcp_md5sig_key *key,
-                               struct sock *sk, struct request_sock *req,
-                               struct sk_buff *skb)
+                               const struct sock *sk,
+                               const struct request_sock *req,
+                               const struct sk_buff *skb)
 {
         const struct in6_addr *saddr, *daddr;
         struct tcp_md5sig_pool *hp;
         struct hash_desc *desc;
-        struct tcphdr *th = tcp_hdr(skb);
+        const struct tcphdr *th = tcp_hdr(skb);
 
         if (sk) {
                 saddr = &inet6_sk(sk)->saddr;
@@ -842,12 +843,12 @@ clear_hash_noput:
         return 1;
 }
 
-static int tcp_v6_inbound_md5_hash (struct sock *sk, struct sk_buff *skb)
+static int tcp_v6_inbound_md5_hash(struct sock *sk, const struct sk_buff *skb)
 {
-        __u8 *hash_location = NULL;
+        const __u8 *hash_location = NULL;
         struct tcp_md5sig_key *hash_expected;
         const struct ipv6hdr *ip6h = ipv6_hdr(skb);
-        struct tcphdr *th = tcp_hdr(skb);
+        const struct tcphdr *th = tcp_hdr(skb);
         int genhash;
         u8 newhash[16];
 
@@ -978,9 +979,10 @@ static int tcp6_gro_complete(struct sk_buff *skb)
 }
 
 static void tcp_v6_send_response(struct sk_buff *skb, u32 seq, u32 ack, u32 win,
-                                 u32 ts, struct tcp_md5sig_key *key, int rst)
+                                 u32 ts, struct tcp_md5sig_key *key, int rst, u8 tclass)
 {
-        struct tcphdr *th = tcp_hdr(skb), *t1;
+        const struct tcphdr *th = tcp_hdr(skb);
+        struct tcphdr *t1;
         struct sk_buff *buff;
         struct flowi6 fl6;
         struct net *net = dev_net(skb_dst(skb)->dev);
@@ -1058,7 +1060,7 @@ static void tcp_v6_send_response(struct sk_buff *skb, u32 seq, u32 ack, u32 win,
         dst = ip6_dst_lookup_flow(ctl_sk, &fl6, NULL, false);
         if (!IS_ERR(dst)) {
                 skb_dst_set(buff, dst);
-                ip6_xmit(ctl_sk, buff, &fl6, NULL);
+                ip6_xmit(ctl_sk, buff, &fl6, NULL, tclass);
                 TCP_INC_STATS_BH(net, TCP_MIB_OUTSEGS);
                 if (rst)
                         TCP_INC_STATS_BH(net, TCP_MIB_OUTRSTS);
@@ -1070,7 +1072,7 @@ static void tcp_v6_send_response(struct sk_buff *skb, u32 seq, u32 ack, u32 win,
 
 static void tcp_v6_send_reset(struct sock *sk, struct sk_buff *skb)
 {
-        struct tcphdr *th = tcp_hdr(skb);
+        const struct tcphdr *th = tcp_hdr(skb);
         u32 seq = 0, ack_seq = 0;
         struct tcp_md5sig_key *key = NULL;
 
@@ -1091,13 +1093,13 @@ static void tcp_v6_send_reset(struct sock *sk, struct sk_buff *skb)
                 ack_seq = ntohl(th->seq) + th->syn + th->fin + skb->len -
                           (th->doff << 2);
 
-        tcp_v6_send_response(skb, seq, ack_seq, 0, 0, key, 1);
+        tcp_v6_send_response(skb, seq, ack_seq, 0, 0, key, 1, 0);
 }
 
 static void tcp_v6_send_ack(struct sk_buff *skb, u32 seq, u32 ack, u32 win, u32 ts,
-                            struct tcp_md5sig_key *key)
+                            struct tcp_md5sig_key *key, u8 tclass)
 {
-        tcp_v6_send_response(skb, seq, ack, win, ts, key, 0);
+        tcp_v6_send_response(skb, seq, ack, win, ts, key, 0, tclass);
 }
 
 static void tcp_v6_timewait_ack(struct sock *sk, struct sk_buff *skb)
@@ -1107,7 +1109,8 @@ static void tcp_v6_timewait_ack(struct sock *sk, struct sk_buff *skb)
 
         tcp_v6_send_ack(skb, tcptw->tw_snd_nxt, tcptw->tw_rcv_nxt,
                         tcptw->tw_rcv_wnd >> tw->tw_rcv_wscale,
-                        tcptw->tw_ts_recent, tcp_twsk_md5_key(tcptw));
+                        tcptw->tw_ts_recent, tcp_twsk_md5_key(tcptw),
+                        tw->tw_tclass);
 
         inet_twsk_put(tw);
 }
@@ -1116,7 +1119,7 @@ static void tcp_v6_reqsk_send_ack(struct sock *sk, struct sk_buff *skb,
                                   struct request_sock *req)
 {
         tcp_v6_send_ack(skb, tcp_rsk(req)->snt_isn + 1, tcp_rsk(req)->rcv_isn + 1, req->rcv_wnd, req->ts_recent,
-                        tcp_v6_md5_do_lookup(sk, &ipv6_hdr(skb)->daddr));
+                        tcp_v6_md5_do_lookup(sk, &ipv6_hdr(skb)->daddr), 0);
 }
 
 
@@ -1160,7 +1163,7 @@ static int tcp_v6_conn_request(struct sock *sk, struct sk_buff *skb)
 {
         struct tcp_extend_values tmp_ext;
         struct tcp_options_received tmp_opt;
-        u8 *hash_location;
+        const u8 *hash_location;
         struct request_sock *req;
         struct inet6_request_sock *treq;
         struct ipv6_pinfo *np = inet6_sk(sk);
@@ -1608,7 +1611,7 @@ static int tcp_v6_do_rcv(struct sock *sk, struct sk_buff *skb)
                 opt_skb = skb_clone(skb, GFP_ATOMIC);
 
         if (sk->sk_state == TCP_ESTABLISHED) { /* Fast path */
-                sock_rps_save_rxhash(sk, skb->rxhash);
+                sock_rps_save_rxhash(sk, skb);
                 if (tcp_rcv_established(sk, skb, tcp_hdr(skb), skb->len))
                         goto reset;
                 if (opt_skb)
@@ -1630,7 +1633,7 @@ static int tcp_v6_do_rcv(struct sock *sk, struct sk_buff *skb)
                  * the new socket..
                  */
                 if(nsk != sk) {
-                        sock_rps_save_rxhash(nsk, skb->rxhash);
+                        sock_rps_save_rxhash(nsk, skb);
                         if (tcp_child_process(sk, nsk, skb))
                                 goto reset;
                         if (opt_skb)
@@ -1638,7 +1641,7 @@ static int tcp_v6_do_rcv(struct sock *sk, struct sk_buff *skb)
                         return 0;
                 }
         } else
-                sock_rps_save_rxhash(sk, skb->rxhash);
+                sock_rps_save_rxhash(sk, skb);
 
         if (tcp_rcv_state_process(sk, skb, tcp_hdr(skb), skb->len))
                 goto reset;
@@ -1688,7 +1691,7 @@ ipv6_pktoptions:
 
 static int tcp_v6_rcv(struct sk_buff *skb)
 {
-        struct tcphdr *th;
+        const struct tcphdr *th;
         const struct ipv6hdr *hdr;
         struct sock *sk;
         int ret;
@@ -1722,7 +1725,7 @@ static int tcp_v6_rcv(struct sk_buff *skb)
                                     skb->len - th->doff*4);
         TCP_SKB_CB(skb)->ack_seq = ntohl(th->ack_seq);
         TCP_SKB_CB(skb)->when = 0;
-        TCP_SKB_CB(skb)->flags = ipv6_get_dsfield(hdr);
+        TCP_SKB_CB(skb)->ip_dsfield = ipv6_get_dsfield(hdr);
         TCP_SKB_CB(skb)->sacked = 0;
 
         sk = __inet6_lookup_skb(&tcp_hashinfo, skb, th->source, th->dest);
@@ -1856,8 +1859,8 @@ static struct inet_peer *tcp_v6_get_peer(struct sock *sk, bool *release_it)
 
 static void *tcp_v6_tw_get_peer(struct sock *sk)
 {
-        struct inet6_timewait_sock *tw6 = inet6_twsk(sk);
-        struct inet_timewait_sock *tw = inet_twsk(sk);
+        const struct inet6_timewait_sock *tw6 = inet6_twsk(sk);
+        const struct inet_timewait_sock *tw = inet_twsk(sk);
 
         if (tw->tw_family == AF_INET)
                 return tcp_v4_tw_get_peer(sk);
@@ -2012,7 +2015,7 @@ static void tcp_v6_destroy_sock(struct sock *sk)
 #ifdef CONFIG_PROC_FS
 /* Proc filesystem TCPv6 sock list dumping. */
 static void get_openreq6(struct seq_file *seq,
-                         struct sock *sk, struct request_sock *req, int i, int uid)
+                         const struct sock *sk, struct request_sock *req, int i, int uid)
 {
         int ttd = req->expires - jiffies;
         const struct in6_addr *src = &inet6_rsk(req)->loc_addr;
@@ -2048,10 +2051,10 @@ static void get_tcp6_sock(struct seq_file *seq, struct sock *sp, int i)
         __u16 destp, srcp;
         int timer_active;
         unsigned long timer_expires;
-        struct inet_sock *inet = inet_sk(sp);
-        struct tcp_sock *tp = tcp_sk(sp);
+        const struct inet_sock *inet = inet_sk(sp);
+        const struct tcp_sock *tp = tcp_sk(sp);
         const struct inet_connection_sock *icsk = inet_csk(sp);
-        struct ipv6_pinfo *np = inet6_sk(sp);
+        const struct ipv6_pinfo *np = inet6_sk(sp);
 
         dest  = &np->daddr;
         src   = &np->rcv_saddr;
@@ -2103,7 +2106,7 @@ static void get_timewait6_sock(struct seq_file *seq,
 {
         const struct in6_addr *dest, *src;
         __u16 destp, srcp;
-        struct inet6_timewait_sock *tw6 = inet6_twsk((struct sock *)tw);
+        const struct inet6_timewait_sock *tw6 = inet6_twsk((struct sock *)tw);
         int ttd = tw->tw_ttd - jiffies;
 
         if (ttd < 0)
@@ -2158,12 +2161,18 @@ out:
         return 0;
 }
 
+static const struct file_operations tcp6_afinfo_seq_fops = {
+        .owner   = THIS_MODULE,
+        .open    = tcp_seq_open,
+        .read    = seq_read,
+        .llseek  = seq_lseek,
+        .release = seq_release_net
+};
+
 static struct tcp_seq_afinfo tcp6_seq_afinfo = {
         .name           = "tcp6",
         .family         = AF_INET6,
-        .seq_fops       = {
-                .owner          = THIS_MODULE,
-        },
+        .seq_fops       = &tcp6_afinfo_seq_fops,
         .seq_ops        = {
                 .show           = tcp6_seq_show,
         },
diff --git a/net/ipv6/udp.c b/net/ipv6/udp.c
index bb95e8e1c6f9..846f4757eb8d 100644
--- a/net/ipv6/udp.c
+++ b/net/ipv6/udp.c
@@ -509,7 +509,7 @@ int udpv6_queue_rcv_skb(struct sock * sk, struct sk_buff *skb)
         int is_udplite = IS_UDPLITE(sk);
 
         if (!ipv6_addr_any(&inet6_sk(sk)->daddr))
-                sock_rps_save_rxhash(sk, skb->rxhash);
+                sock_rps_save_rxhash(sk, skb);
 
         if (!xfrm6_policy_check(sk, XFRM_POLICY_IN, skb))
                 goto drop;
@@ -533,7 +533,7 @@ int udpv6_queue_rcv_skb(struct sock * sk, struct sk_buff *skb)
                 }
         }
 
-        if (rcu_dereference_raw(sk->sk_filter)) {
+        if (rcu_access_pointer(sk->sk_filter)) {
                 if (udp_lib_checksum_complete(skb))
                         goto drop;
         }
@@ -1424,13 +1424,19 @@ int udp6_seq_show(struct seq_file *seq, void *v)
         return 0;
 }
 
+static const struct file_operations udp6_afinfo_seq_fops = {
+        .owner    = THIS_MODULE,
+        .open     = udp_seq_open,
+        .read     = seq_read,
+        .llseek   = seq_lseek,
+        .release  = seq_release_net
+};
+
 static struct udp_seq_afinfo udp6_seq_afinfo = {
         .name           = "udp6",
         .family         = AF_INET6,
         .udp_table      = &udp_table,
-        .seq_fops       = {
-                .owner  =       THIS_MODULE,
-        },
+        .seq_fops       = &udp6_afinfo_seq_fops,
         .seq_ops        = {
                 .show           = udp6_seq_show,
         },
diff --git a/net/ipv6/udplite.c b/net/ipv6/udplite.c
index 986c4de5292e..1d08e21d9f69 100644
--- a/net/ipv6/udplite.c
+++ b/net/ipv6/udplite.c
@@ -11,6 +11,7 @@
  *              as published by the Free Software Foundation; either version
  *              2 of the License, or (at your option) any later version.
  */
+#include <linux/export.h>
 #include "udp_impl.h"
 
 static int udplitev6_rcv(struct sk_buff *skb)
@@ -93,13 +94,20 @@ void udplitev6_exit(void)
 }
 
 #ifdef CONFIG_PROC_FS
+
+static const struct file_operations udplite6_afinfo_seq_fops = {
+        .owner    = THIS_MODULE,
+        .open     = udp_seq_open,
+        .read     = seq_read,
+        .llseek   = seq_lseek,
+        .release  = seq_release_net
+};
+
 static struct udp_seq_afinfo udplite6_seq_afinfo = {
         .name           = "udplite6",
         .family         = AF_INET6,
         .udp_table      = &udplite_table,
-        .seq_fops       = {
-                .owner  =       THIS_MODULE,
-        },
+        .seq_fops       = &udplite6_afinfo_seq_fops,
         .seq_ops        = {
                 .show           = udp6_seq_show,
         },
diff --git a/net/ipv6/xfrm6_output.c b/net/ipv6/xfrm6_output.c
index 49a91c5f5623..faae41737fca 100644
--- a/net/ipv6/xfrm6_output.c
+++ b/net/ipv6/xfrm6_output.c
@@ -28,6 +28,43 @@ int xfrm6_find_1stfragopt(struct xfrm_state *x, struct sk_buff *skb,
 
 EXPORT_SYMBOL(xfrm6_find_1stfragopt);
 
+static int xfrm6_local_dontfrag(struct sk_buff *skb)
+{
+        int proto;
+        struct sock *sk = skb->sk;
+
+        if (sk) {
+                proto = sk->sk_protocol;
+
+                if (proto == IPPROTO_UDP || proto == IPPROTO_RAW)
+                        return inet6_sk(sk)->dontfrag;
+        }
+
+        return 0;
+}
+
+static void xfrm6_local_rxpmtu(struct sk_buff *skb, u32 mtu)
+{
+        struct flowi6 fl6;
+        struct sock *sk = skb->sk;
+
+        fl6.flowi6_oif = sk->sk_bound_dev_if;
+        ipv6_addr_copy(&fl6.daddr, &ipv6_hdr(skb)->daddr);
+
+        ipv6_local_rxpmtu(sk, &fl6, mtu);
+}
+
+static void xfrm6_local_error(struct sk_buff *skb, u32 mtu)
+{
+        struct flowi6 fl6;
+        struct sock *sk = skb->sk;
+
+        fl6.fl6_dport = inet_sk(sk)->inet_dport;
+        ipv6_addr_copy(&fl6.daddr, &ipv6_hdr(skb)->daddr);
+
+        ipv6_local_error(sk, EMSGSIZE, &fl6, mtu);
+}
+
 static int xfrm6_tunnel_check_size(struct sk_buff *skb)
 {
         int mtu, ret = 0;
@@ -39,7 +76,13 @@ static int xfrm6_tunnel_check_size(struct sk_buff *skb)
 
         if (!skb->local_df && skb->len > mtu) {
                 skb->dev = dst->dev;
-                icmpv6_send(skb, ICMPV6_PKT_TOOBIG, 0, mtu);
+
+                if (xfrm6_local_dontfrag(skb))
+                        xfrm6_local_rxpmtu(skb, mtu);
+                else if (skb->sk)
+                        xfrm6_local_error(skb, mtu);
+                else
+                        icmpv6_send(skb, ICMPV6_PKT_TOOBIG, 0, mtu);
                 ret = -EMSGSIZE;
         }
 
@@ -93,9 +136,18 @@ static int __xfrm6_output(struct sk_buff *skb)
 {
         struct dst_entry *dst = skb_dst(skb);
         struct xfrm_state *x = dst->xfrm;
+        int mtu = ip6_skb_dst_mtu(skb);
+
+        if (skb->len > mtu && xfrm6_local_dontfrag(skb)) {
+                xfrm6_local_rxpmtu(skb, mtu);
+                return -EMSGSIZE;
+        } else if (!skb->local_df && skb->len > mtu && skb->sk) {
+                xfrm6_local_error(skb, mtu);
+                return -EMSGSIZE;
+        }
 
         if ((x && x->props.mode == XFRM_MODE_TUNNEL) &&
-            ((skb->len > ip6_skb_dst_mtu(skb) && !skb_is_gso(skb)) ||
+            ((skb->len > mtu && !skb_is_gso(skb)) ||
                 dst_allfrag(skb_dst(skb)))) {
                         return ip6_fragment(skb, x->outer_mode->afinfo->output_finish);
         }
diff --git a/net/ipv6/xfrm6_state.c b/net/ipv6/xfrm6_state.c
index 248f0b2a7ee9..f2d72b8a3faa 100644
--- a/net/ipv6/xfrm6_state.c
+++ b/net/ipv6/xfrm6_state.c
@@ -15,6 +15,7 @@
 #include <linux/pfkeyv2.h>
 #include <linux/ipsec.h>
 #include <linux/netfilter_ipv6.h>
+#include <linux/export.h>
 #include <net/dsfield.h>
 #include <net/ipv6.h>
 #include <net/addrconf.h>
diff --git a/net/ipx/ipx_proc.c b/net/ipx/ipx_proc.c
index 26b5bfcf1d03..f8ba30dfecae 100644
--- a/net/ipx/ipx_proc.c
+++ b/net/ipx/ipx_proc.c
@@ -9,6 +9,7 @@
 #include <linux/proc_fs.h>
 #include <linux/spinlock.h>
 #include <linux/seq_file.h>
+#include <linux/export.h>
 #include <net/net_namespace.h>
 #include <net/tcp_states.h>
 #include <net/ipx.h>
diff --git a/net/irda/discovery.c b/net/irda/discovery.c
index 36c3f037f172..b0b56a339a83 100644
--- a/net/irda/discovery.c
+++ b/net/irda/discovery.c
@@ -35,6 +35,7 @@
 #include <linux/fs.h>
 #include <linux/seq_file.h>
 #include <linux/slab.h>
+#include <linux/export.h>
 
 #include <net/irda/irda.h>
 #include <net/irda/irlmp.h>
diff --git a/net/irda/ircomm/ircomm_tty.c b/net/irda/ircomm/ircomm_tty.c
index b3cc8b3989a9..253695d43fd9 100644
--- a/net/irda/ircomm/ircomm_tty.c
+++ b/net/irda/ircomm/ircomm_tty.c
@@ -551,7 +551,7 @@ static void ircomm_tty_close(struct tty_struct *tty, struct file *filp)
          */
         tty->closing = 1;
         if (self->closing_wait != ASYNC_CLOSING_WAIT_NONE)
-                tty_wait_until_sent(tty, self->closing_wait);
+                tty_wait_until_sent_from_close(tty, self->closing_wait);
 
         ircomm_tty_shutdown(self);
 
diff --git a/net/irda/irda_device.c b/net/irda/irda_device.c
index 3eca35faf2a8..14653b8d664d 100644
--- a/net/irda/irda_device.c
+++ b/net/irda/irda_device.c
@@ -42,6 +42,7 @@
 #include <linux/kmod.h>
 #include <linux/spinlock.h>
 #include <linux/slab.h>
+#include <linux/export.h>
 
 #include <asm/ioctls.h>
 #include <asm/uaccess.h>
diff --git a/net/irda/irlan/irlan_eth.c b/net/irda/irlan/irlan_eth.c
index e8d5f4405d68..d14152e866d9 100644
--- a/net/irda/irlan/irlan_eth.c
+++ b/net/irda/irlan/irlan_eth.c
@@ -50,7 +50,7 @@ static const struct net_device_ops irlan_eth_netdev_ops = {
         .ndo_open               = irlan_eth_open,
         .ndo_stop               = irlan_eth_close,
         .ndo_start_xmit         = irlan_eth_xmit,
-        .ndo_set_multicast_list = irlan_eth_set_multicast_list,
+        .ndo_set_rx_mode        = irlan_eth_set_multicast_list,
         .ndo_change_mtu         = eth_change_mtu,
         .ndo_validate_addr      = eth_validate_addr,
 };
diff --git a/net/irda/irttp.c b/net/irda/irttp.c
index 285ccd623ae5..32e3bb026110 100644
--- a/net/irda/irttp.c
+++ b/net/irda/irttp.c
@@ -29,6 +29,7 @@
 #include <linux/fs.h>
 #include <linux/seq_file.h>
 #include <linux/slab.h>
+#include <linux/export.h>
 
 #include <asm/byteorder.h>
 #include <asm/unaligned.h>
diff --git a/net/irda/qos.c b/net/irda/qos.c
index 4369f7f41bcb..798ffd9a705e 100644
--- a/net/irda/qos.c
+++ b/net/irda/qos.c
@@ -30,6 +30,8 @@
  *
  ********************************************************************/
 
+#include <linux/export.h>
+
 #include <asm/byteorder.h>
 
 #include <net/irda/irda.h>
diff --git a/net/iucv/Kconfig b/net/iucv/Kconfig
index 16ce9cd4f39e..497fbe732def 100644
--- a/net/iucv/Kconfig
+++ b/net/iucv/Kconfig
@@ -1,15 +1,17 @@
 config IUCV
-        tristate "IUCV support (S390 - z/VM only)"
         depends on S390
+        def_tristate y if S390
+        prompt "IUCV support (S390 - z/VM only)"
         help
           Select this option if you want to use inter-user communication
           under VM or VIF. If you run on z/VM, say "Y" to enable a fast
           communication link between VM guests.
 
 config AFIUCV
-        tristate "AF_IUCV support (S390 - z/VM only)"
-        depends on IUCV
+        depends on S390
+        def_tristate m if QETH_L3 || IUCV
+        prompt "AF_IUCV Socket support (S390 - z/VM and HiperSockets transport)"
         help
-          Select this option if you want to use inter-user communication under
-          VM or VIF sockets. If you run on z/VM, say "Y" to enable a fast
-          communication link between VM guests.
+          Select this option if you want to use AF_IUCV socket applications
+          based on z/VM inter-user communication vehicle or based on
+          HiperSockets.
diff --git a/net/iucv/af_iucv.c b/net/iucv/af_iucv.c
index e2013e434d03..274d150320c0 100644
--- a/net/iucv/af_iucv.c
+++ b/net/iucv/af_iucv.c
@@ -27,10 +27,9 @@
 #include <asm/cpcmd.h>
 #include <linux/kmod.h>
 
-#include <net/iucv/iucv.h>
 #include <net/iucv/af_iucv.h>
 
-#define VERSION "1.1"
+#define VERSION "1.2"
 
 static char iucv_userid[80];
 
@@ -42,6 +41,8 @@ static struct proto iucv_proto = {
         .obj_size       = sizeof(struct iucv_sock),
 };
 
+static struct iucv_interface *pr_iucv;
+
 /* special AF_IUCV IPRM messages */
 static const u8 iprm_shutdown[8] =
         {0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01};
@@ -90,6 +91,12 @@ do {									\
 static void iucv_sock_kill(struct sock *sk);
 static void iucv_sock_close(struct sock *sk);
 
+static int afiucv_hs_rcv(struct sk_buff *skb, struct net_device *dev,
+        struct packet_type *pt, struct net_device *orig_dev);
+static int afiucv_hs_send(struct iucv_message *imsg, struct sock *sock,
+                   struct sk_buff *skb, u8 flags);
+static void afiucv_hs_callback_txnotify(struct sk_buff *, enum iucv_tx_notify);
+
 /* Call Back functions */
 static void iucv_callback_rx(struct iucv_path *, struct iucv_message *);
 static void iucv_callback_txdone(struct iucv_path *, struct iucv_message *);
@@ -165,7 +172,7 @@ static int afiucv_pm_freeze(struct device *dev)
                 case IUCV_CLOSING:
                 case IUCV_CONNECTED:
                         if (iucv->path) {
-                                err = iucv_path_sever(iucv->path, NULL);
+                                err = pr_iucv->path_sever(iucv->path, NULL);
                                 iucv_path_free(iucv->path);
                                 iucv->path = NULL;
                         }
@@ -229,7 +236,7 @@ static const struct dev_pm_ops afiucv_pm_ops = {
 static struct device_driver af_iucv_driver = {
         .owner = THIS_MODULE,
         .name = "afiucv",
-        .bus  = &iucv_bus,
+        .bus  = NULL,
         .pm   = &afiucv_pm_ops,
 };
 
@@ -294,7 +301,11 @@ static inline int iucv_below_msglim(struct sock *sk)
 
         if (sk->sk_state != IUCV_CONNECTED)
                 return 1;
-        return (skb_queue_len(&iucv->send_skb_q) < iucv->path->msglim);
+        if (iucv->transport == AF_IUCV_TRANS_IUCV)
+                return (skb_queue_len(&iucv->send_skb_q) < iucv->path->msglim);
+        else
+                return ((atomic_read(&iucv->msg_sent) < iucv->msglimit_peer) &&
+                        (atomic_read(&iucv->pendings) <= 0));
 }
 
 /**
@@ -312,6 +323,79 @@ static void iucv_sock_wake_msglim(struct sock *sk)
         rcu_read_unlock();
 }
 
+/**
+ * afiucv_hs_send() - send a message through HiperSockets transport
+ */
+static int afiucv_hs_send(struct iucv_message *imsg, struct sock *sock,
+                   struct sk_buff *skb, u8 flags)
+{
+        struct net *net = sock_net(sock);
+        struct iucv_sock *iucv = iucv_sk(sock);
+        struct af_iucv_trans_hdr *phs_hdr;
+        struct sk_buff *nskb;
+        int err, confirm_recv = 0;
+
+        memset(skb->head, 0, ETH_HLEN);
+        phs_hdr = (struct af_iucv_trans_hdr *)skb_push(skb,
+                                        sizeof(struct af_iucv_trans_hdr));
+        skb_reset_mac_header(skb);
+        skb_reset_network_header(skb);
+        skb_push(skb, ETH_HLEN);
+        skb_reset_mac_header(skb);
+        memset(phs_hdr, 0, sizeof(struct af_iucv_trans_hdr));
+
+        phs_hdr->magic = ETH_P_AF_IUCV;
+        phs_hdr->version = 1;
+        phs_hdr->flags = flags;
+        if (flags == AF_IUCV_FLAG_SYN)
+                phs_hdr->window = iucv->msglimit;
+        else if ((flags == AF_IUCV_FLAG_WIN) || !flags) {
+                confirm_recv = atomic_read(&iucv->msg_recv);
+                phs_hdr->window = confirm_recv;
+                if (confirm_recv)
+                        phs_hdr->flags = phs_hdr->flags | AF_IUCV_FLAG_WIN;
+        }
+        memcpy(phs_hdr->destUserID, iucv->dst_user_id, 8);
+        memcpy(phs_hdr->destAppName, iucv->dst_name, 8);
+        memcpy(phs_hdr->srcUserID, iucv->src_user_id, 8);
+        memcpy(phs_hdr->srcAppName, iucv->src_name, 8);
+        ASCEBC(phs_hdr->destUserID, sizeof(phs_hdr->destUserID));
+        ASCEBC(phs_hdr->destAppName, sizeof(phs_hdr->destAppName));
+        ASCEBC(phs_hdr->srcUserID, sizeof(phs_hdr->srcUserID));
+        ASCEBC(phs_hdr->srcAppName, sizeof(phs_hdr->srcAppName));
+        if (imsg)
+                memcpy(&phs_hdr->iucv_hdr, imsg, sizeof(struct iucv_message));
+
+        rcu_read_lock();
+        skb->dev = dev_get_by_index_rcu(net, sock->sk_bound_dev_if);
+        rcu_read_unlock();
+        if (!skb->dev)
+                return -ENODEV;
+        if (!(skb->dev->flags & IFF_UP))
+                return -ENETDOWN;
+        if (skb->len > skb->dev->mtu) {
+                if (sock->sk_type == SOCK_SEQPACKET)
+                        return -EMSGSIZE;
+                else
+                        skb_trim(skb, skb->dev->mtu);
+        }
+        skb->protocol = ETH_P_AF_IUCV;
+        skb_shinfo(skb)->tx_flags |= SKBTX_DRV_NEEDS_SK_REF;
+        nskb = skb_clone(skb, GFP_ATOMIC);
+        if (!nskb)
+                return -ENOMEM;
+        skb_queue_tail(&iucv->send_skb_q, nskb);
+        err = dev_queue_xmit(skb);
+        if (err) {
+                skb_unlink(nskb, &iucv->send_skb_q);
+                kfree_skb(nskb);
+        } else {
+                atomic_sub(confirm_recv, &iucv->msg_recv);
+                WARN_ON(atomic_read(&iucv->msg_recv) < 0);
+        }
+        return err;
+}
+
 /* Timers */
 static void iucv_sock_timeout(unsigned long arg)
 {
@@ -380,6 +464,8 @@ static void iucv_sock_close(struct sock *sk)
         unsigned char user_data[16];
         struct iucv_sock *iucv = iucv_sk(sk);
         unsigned long timeo;
+        int err, blen;
+        struct sk_buff *skb;
 
         iucv_sock_clear_timer(sk);
         lock_sock(sk);
@@ -390,6 +476,20 @@ static void iucv_sock_close(struct sock *sk)
                 break;
 
         case IUCV_CONNECTED:
+                if (iucv->transport == AF_IUCV_TRANS_HIPER) {
+                        /* send fin */
+                        blen = sizeof(struct af_iucv_trans_hdr) + ETH_HLEN;
+                        skb = sock_alloc_send_skb(sk, blen, 1, &err);
+                        if (skb) {
+                                skb_reserve(skb,
+                                        sizeof(struct af_iucv_trans_hdr) +
+                                        ETH_HLEN);
+                                err = afiucv_hs_send(NULL, sk, skb,
+                                                     AF_IUCV_FLAG_FIN);
+                        }
+                        sk->sk_state = IUCV_DISCONN;
+                        sk->sk_state_change(sk);
+                }
         case IUCV_DISCONN:
                 sk->sk_state = IUCV_CLOSING;
                 sk->sk_state_change(sk);
@@ -412,7 +512,7 @@ static void iucv_sock_close(struct sock *sk)
                         low_nmcpy(user_data, iucv->src_name);
                         high_nmcpy(user_data, iucv->dst_name);
                         ASCEBC(user_data, sizeof(user_data));
-                        iucv_path_sever(iucv->path, user_data);
+                        pr_iucv->path_sever(iucv->path, user_data);
                         iucv_path_free(iucv->path);
                         iucv->path = NULL;
                 }
@@ -444,23 +544,33 @@ static void iucv_sock_init(struct sock *sk, struct sock *parent)
 static struct sock *iucv_sock_alloc(struct socket *sock, int proto, gfp_t prio)
 {
         struct sock *sk;
+        struct iucv_sock *iucv;
 
         sk = sk_alloc(&init_net, PF_IUCV, prio, &iucv_proto);
         if (!sk)
                 return NULL;
+        iucv = iucv_sk(sk);
 
         sock_init_data(sock, sk);
-        INIT_LIST_HEAD(&iucv_sk(sk)->accept_q);
-        spin_lock_init(&iucv_sk(sk)->accept_q_lock);
-        skb_queue_head_init(&iucv_sk(sk)->send_skb_q);
-        INIT_LIST_HEAD(&iucv_sk(sk)->message_q.list);
-        spin_lock_init(&iucv_sk(sk)->message_q.lock);
-        skb_queue_head_init(&iucv_sk(sk)->backlog_skb_q);
-        iucv_sk(sk)->send_tag = 0;
-        iucv_sk(sk)->flags = 0;
-        iucv_sk(sk)->msglimit = IUCV_QUEUELEN_DEFAULT;
-        iucv_sk(sk)->path = NULL;
-        memset(&iucv_sk(sk)->src_user_id , 0, 32);
+        INIT_LIST_HEAD(&iucv->accept_q);
+        spin_lock_init(&iucv->accept_q_lock);
+        skb_queue_head_init(&iucv->send_skb_q);
+        INIT_LIST_HEAD(&iucv->message_q.list);
+        spin_lock_init(&iucv->message_q.lock);
+        skb_queue_head_init(&iucv->backlog_skb_q);
+        iucv->send_tag = 0;
+        atomic_set(&iucv->pendings, 0);
+        iucv->flags = 0;
+        iucv->msglimit = 0;
+        atomic_set(&iucv->msg_sent, 0);
+        atomic_set(&iucv->msg_recv, 0);
+        iucv->path = NULL;
+        iucv->sk_txnotify = afiucv_hs_callback_txnotify;
+        memset(&iucv->src_user_id , 0, 32);
+        if (pr_iucv)
+                iucv->transport = AF_IUCV_TRANS_IUCV;
+        else
+                iucv->transport = AF_IUCV_TRANS_HIPER;
 
         sk->sk_destruct = iucv_sock_destruct;
         sk->sk_sndtimeo = IUCV_CONN_TIMEOUT;
@@ -591,7 +701,9 @@ static int iucv_sock_bind(struct socket *sock, struct sockaddr *addr,
         struct sockaddr_iucv *sa = (struct sockaddr_iucv *) addr;
         struct sock *sk = sock->sk;
         struct iucv_sock *iucv;
-        int err;
+        int err = 0;
+        struct net_device *dev;
+        char uid[9];
 
         /* Verify the input sockaddr */
         if (!addr || addr->sa_family != AF_IUCV)
@@ -610,19 +722,46 @@ static int iucv_sock_bind(struct socket *sock, struct sockaddr *addr,
                 err = -EADDRINUSE;
                 goto done_unlock;
         }
-        if (iucv->path) {
-                err = 0;
+        if (iucv->path)
                 goto done_unlock;
-        }
 
         /* Bind the socket */
-        memcpy(iucv->src_name, sa->siucv_name, 8);
 
-        /* Copy the user id */
-        memcpy(iucv->src_user_id, iucv_userid, 8);
-        sk->sk_state = IUCV_BOUND;
-        err = 0;
+        if (pr_iucv)
+                if (!memcmp(sa->siucv_user_id, iucv_userid, 8))
+                        goto vm_bind; /* VM IUCV transport */
 
+        /* try hiper transport */
+        memcpy(uid, sa->siucv_user_id, sizeof(uid));
+        ASCEBC(uid, 8);
+        rcu_read_lock();
+        for_each_netdev_rcu(&init_net, dev) {
+                if (!memcmp(dev->perm_addr, uid, 8)) {
+                        memcpy(iucv->src_name, sa->siucv_name, 8);
+                        memcpy(iucv->src_user_id, sa->siucv_user_id, 8);
+                        sock->sk->sk_bound_dev_if = dev->ifindex;
+                        sk->sk_state = IUCV_BOUND;
+                        iucv->transport = AF_IUCV_TRANS_HIPER;
+                        if (!iucv->msglimit)
+                                iucv->msglimit = IUCV_HIPER_MSGLIM_DEFAULT;
+                        rcu_read_unlock();
+                        goto done_unlock;
+                }
+        }
+        rcu_read_unlock();
+vm_bind:
+        if (pr_iucv) {
+                /* use local userid for backward compat */
+                memcpy(iucv->src_name, sa->siucv_name, 8);
+                memcpy(iucv->src_user_id, iucv_userid, 8);
+                sk->sk_state = IUCV_BOUND;
+                iucv->transport = AF_IUCV_TRANS_IUCV;
+                if (!iucv->msglimit)
+                        iucv->msglimit = IUCV_QUEUELEN_DEFAULT;
+                goto done_unlock;
+        }
+        /* found no dev to bind */
+        err = -ENODEV;
 done_unlock:
         /* Release the socket list lock */
         write_unlock_bh(&iucv_sk_list.lock);
@@ -658,45 +797,44 @@ static int iucv_sock_autobind(struct sock *sk)
 
         memcpy(&iucv->src_name, name, 8);
 
+        if (!iucv->msglimit)
+                iucv->msglimit = IUCV_QUEUELEN_DEFAULT;
+
         return err;
 }
 
-/* Connect an unconnected socket */
-static int iucv_sock_connect(struct socket *sock, struct sockaddr *addr,
-                             int alen, int flags)
+static int afiucv_hs_connect(struct socket *sock)
 {
-        struct sockaddr_iucv *sa = (struct sockaddr_iucv *) addr;
         struct sock *sk = sock->sk;
-        struct iucv_sock *iucv;
-        unsigned char user_data[16];
-        int err;
-
-        if (addr->sa_family != AF_IUCV || alen < sizeof(struct sockaddr_iucv))
-                return -EINVAL;
-
-        if (sk->sk_state != IUCV_OPEN && sk->sk_state != IUCV_BOUND)
-                return -EBADFD;
-
-        if (sk->sk_type != SOCK_STREAM && sk->sk_type != SOCK_SEQPACKET)
-                return -EINVAL;
+        struct sk_buff *skb;
+        int blen = sizeof(struct af_iucv_trans_hdr) + ETH_HLEN;
+        int err = 0;
 
-        if (sk->sk_state == IUCV_OPEN) {
-                err = iucv_sock_autobind(sk);
-                if (unlikely(err))
-                        return err;
+        /* send syn */
+        skb = sock_alloc_send_skb(sk, blen, 1, &err);
+        if (!skb) {
+                err = -ENOMEM;
+                goto done;
         }
+        skb->dev = NULL;
+        skb_reserve(skb, blen);
+        err = afiucv_hs_send(NULL, sk, skb, AF_IUCV_FLAG_SYN);
+done:
+        return err;
+}
 
-        lock_sock(sk);
-
-        /* Set the destination information */
-        memcpy(iucv_sk(sk)->dst_user_id, sa->siucv_user_id, 8);
-        memcpy(iucv_sk(sk)->dst_name, sa->siucv_name, 8);
+static int afiucv_path_connect(struct socket *sock, struct sockaddr *addr)
+{
+        struct sockaddr_iucv *sa = (struct sockaddr_iucv *) addr;
+        struct sock *sk = sock->sk;
+        struct iucv_sock *iucv = iucv_sk(sk);
+        unsigned char user_data[16];
+        int err;
 
         high_nmcpy(user_data, sa->siucv_name);
-        low_nmcpy(user_data, iucv_sk(sk)->src_name);
+        low_nmcpy(user_data, iucv->src_name);
         ASCEBC(user_data, sizeof(user_data));
 
-        iucv = iucv_sk(sk);
         /* Create path. */
         iucv->path = iucv_path_alloc(iucv->msglimit,
                                      IUCV_IPRMDATA, GFP_KERNEL);
@@ -704,8 +842,9 @@ static int iucv_sock_connect(struct socket *sock, struct sockaddr *addr,
                 err = -ENOMEM;
                 goto done;
         }
-        err = iucv_path_connect(iucv->path, &af_iucv_handler,
-                                sa->siucv_user_id, NULL, user_data, sk);
+        err = pr_iucv->path_connect(iucv->path, &af_iucv_handler,
+                                    sa->siucv_user_id, NULL, user_data,
+                                    sk);
         if (err) {
                 iucv_path_free(iucv->path);
                 iucv->path = NULL;
@@ -724,21 +863,62 @@ static int iucv_sock_connect(struct socket *sock, struct sockaddr *addr,
                         err = -ECONNREFUSED;
                         break;
                 }
-                goto done;
         }
+done:
+        return err;
+}
 
-        if (sk->sk_state != IUCV_CONNECTED) {
+/* Connect an unconnected socket */
+static int iucv_sock_connect(struct socket *sock, struct sockaddr *addr,
+                             int alen, int flags)
+{
+        struct sockaddr_iucv *sa = (struct sockaddr_iucv *) addr;
+        struct sock *sk = sock->sk;
+        struct iucv_sock *iucv = iucv_sk(sk);
+        int err;
+
+        if (addr->sa_family != AF_IUCV || alen < sizeof(struct sockaddr_iucv))
+                return -EINVAL;
+
+        if (sk->sk_state != IUCV_OPEN && sk->sk_state != IUCV_BOUND)
+                return -EBADFD;
+
+        if (sk->sk_state == IUCV_OPEN &&
+            iucv->transport == AF_IUCV_TRANS_HIPER)
+                return -EBADFD; /* explicit bind required */
+
+        if (sk->sk_type != SOCK_STREAM && sk->sk_type != SOCK_SEQPACKET)
+                return -EINVAL;
+
+        if (sk->sk_state == IUCV_OPEN) {
+                err = iucv_sock_autobind(sk);
+                if (unlikely(err))
+                        return err;
+        }
+
+        lock_sock(sk);
+
+        /* Set the destination information */
+        memcpy(iucv->dst_user_id, sa->siucv_user_id, 8);
+        memcpy(iucv->dst_name, sa->siucv_name, 8);
+
+        if (iucv->transport == AF_IUCV_TRANS_HIPER)
+                err = afiucv_hs_connect(sock);
+        else
+                err = afiucv_path_connect(sock, addr);
+        if (err)
+                goto done;
+
+        if (sk->sk_state != IUCV_CONNECTED)
                 err = iucv_sock_wait(sk, iucv_sock_in_state(sk, IUCV_CONNECTED,
                                                             IUCV_DISCONN),
                                      sock_sndtimeo(sk, flags & O_NONBLOCK));
-        }
 
-        if (sk->sk_state == IUCV_DISCONN) {
+        if (sk->sk_state == IUCV_DISCONN || sk->sk_state == IUCV_CLOSED)
                 err = -ECONNREFUSED;
-        }
 
-        if (err) {
-                iucv_path_sever(iucv->path, NULL);
+        if (err && iucv->transport == AF_IUCV_TRANS_IUCV) {
+                pr_iucv->path_sever(iucv->path, NULL);
                 iucv_path_free(iucv->path);
                 iucv->path = NULL;
         }
@@ -833,20 +1013,21 @@ static int iucv_sock_getname(struct socket *sock, struct sockaddr *addr,
 {
         struct sockaddr_iucv *siucv = (struct sockaddr_iucv *) addr;
         struct sock *sk = sock->sk;
+        struct iucv_sock *iucv = iucv_sk(sk);
 
         addr->sa_family = AF_IUCV;
         *len = sizeof(struct sockaddr_iucv);
 
         if (peer) {
-                memcpy(siucv->siucv_user_id, iucv_sk(sk)->dst_user_id, 8);
-                memcpy(siucv->siucv_name, &iucv_sk(sk)->dst_name, 8);
+                memcpy(siucv->siucv_user_id, iucv->dst_user_id, 8);
+                memcpy(siucv->siucv_name, iucv->dst_name, 8);
         } else {
-                memcpy(siucv->siucv_user_id, iucv_sk(sk)->src_user_id, 8);
-                memcpy(siucv->siucv_name, iucv_sk(sk)->src_name, 8);
+                memcpy(siucv->siucv_user_id, iucv->src_user_id, 8);
+                memcpy(siucv->siucv_name, iucv->src_name, 8);
         }
         memset(&siucv->siucv_port, 0, sizeof(siucv->siucv_port));
         memset(&siucv->siucv_addr, 0, sizeof(siucv->siucv_addr));
-        memset(siucv->siucv_nodeid, 0, sizeof(siucv->siucv_nodeid));
+        memset(&siucv->siucv_nodeid, 0, sizeof(siucv->siucv_nodeid));
 
         return 0;
 }
@@ -871,7 +1052,7 @@ static int iucv_send_iprm(struct iucv_path *path, struct iucv_message *msg,
 
         memcpy(prmdata, (void *) skb->data, skb->len);
         prmdata[7] = 0xff - (u8) skb->len;
-        return iucv_message_send(path, msg, IUCV_IPRMDATA, 0,
+        return pr_iucv->message_send(path, msg, IUCV_IPRMDATA, 0,
                                  (void *) prmdata, 8);
 }
 
@@ -960,9 +1141,16 @@ static int iucv_sock_sendmsg(struct kiocb *iocb, struct socket *sock,
          * this is fine for SOCK_SEQPACKET (unless we want to support
          * segmented records using the MSG_EOR flag), but
          * for SOCK_STREAM we might want to improve it in future */
-        skb = sock_alloc_send_skb(sk, len, noblock, &err);
+        if (iucv->transport == AF_IUCV_TRANS_HIPER)
+                skb = sock_alloc_send_skb(sk,
+                        len + sizeof(struct af_iucv_trans_hdr) + ETH_HLEN,
+                        noblock, &err);
+        else
+                skb = sock_alloc_send_skb(sk, len, noblock, &err);
         if (!skb)
                 goto out;
+        if (iucv->transport == AF_IUCV_TRANS_HIPER)
+                skb_reserve(skb, sizeof(struct af_iucv_trans_hdr) + ETH_HLEN);
         if (memcpy_fromiovec(skb_put(skb, len), msg->msg_iov, len)) {
                 err = -EFAULT;
                 goto fail;
@@ -983,6 +1171,15 @@ static int iucv_sock_sendmsg(struct kiocb *iocb, struct socket *sock,
         /* increment and save iucv message tag for msg_completion cbk */
         txmsg.tag = iucv->send_tag++;
         memcpy(CB_TAG(skb), &txmsg.tag, CB_TAG_LEN);
+        if (iucv->transport == AF_IUCV_TRANS_HIPER) {
+                atomic_inc(&iucv->msg_sent);
+                err = afiucv_hs_send(&txmsg, sk, skb, 0);
+                if (err) {
+                        atomic_dec(&iucv->msg_sent);
+                        goto fail;
+                }
+                goto release;
+        }
         skb_queue_tail(&iucv->send_skb_q, skb);
 
         if (((iucv->path->flags & IUCV_IPRMDATA) & iucv->flags)
@@ -999,13 +1196,13 @@ static int iucv_sock_sendmsg(struct kiocb *iocb, struct socket *sock,
                 /* this error should never happen since the
                  * IUCV_IPRMDATA path flag is set... sever path */
                 if (err == 0x15) {
-                        iucv_path_sever(iucv->path, NULL);
+                        pr_iucv->path_sever(iucv->path, NULL);
                         skb_unlink(skb, &iucv->send_skb_q);
                         err = -EPIPE;
                         goto fail;
                 }
         } else
-                err = iucv_message_send(iucv->path, &txmsg, 0, 0,
+                err = pr_iucv->message_send(iucv->path, &txmsg, 0, 0,
                                         (void *) skb->data, skb->len);
         if (err) {
                 if (err == 3) {
@@ -1023,6 +1220,7 @@ static int iucv_sock_sendmsg(struct kiocb *iocb, struct socket *sock,
                 goto fail;
         }
 
+release:
         release_sock(sk);
         return len;
 
@@ -1095,8 +1293,9 @@ static void iucv_process_message(struct sock *sk, struct sk_buff *skb,
                         skb->len = 0;
                 }
         } else {
-                rc = iucv_message_receive(path, msg, msg->flags & IUCV_IPRMDATA,
-                                          skb->data, len, NULL);
+                rc = pr_iucv->message_receive(path, msg,
+                                              msg->flags & IUCV_IPRMDATA,
+                                              skb->data, len, NULL);
                 if (rc) {
                         kfree_skb(skb);
                         return;
@@ -1110,7 +1309,7 @@ static void iucv_process_message(struct sock *sk, struct sk_buff *skb,
                         kfree_skb(skb);
                         skb = NULL;
                         if (rc) {
-                                iucv_path_sever(path, NULL);
+                                pr_iucv->path_sever(path, NULL);
                                 return;
                         }
                         skb = skb_dequeue(&iucv_sk(sk)->backlog_skb_q);
@@ -1154,7 +1353,8 @@ static int iucv_sock_recvmsg(struct kiocb *iocb, struct socket *sock,
         struct sock *sk = sock->sk;
         struct iucv_sock *iucv = iucv_sk(sk);
         unsigned int copied, rlen;
-        struct sk_buff *skb, *rskb, *cskb;
+        struct sk_buff *skb, *rskb, *cskb, *sskb;
+        int blen;
         int err = 0;
 
         if ((sk->sk_state == IUCV_DISCONN || sk->sk_state == IUCV_SEVERED) &&
@@ -1179,7 +1379,7 @@ static int iucv_sock_recvmsg(struct kiocb *iocb, struct socket *sock,
         copied = min_t(unsigned int, rlen, len);
 
         cskb = skb;
-        if (memcpy_toiovec(msg->msg_iov, cskb->data, copied)) {
+        if (skb_copy_datagram_iovec(cskb, 0, msg->msg_iov, copied)) {
                 if (!(flags & MSG_PEEK))
                         skb_queue_head(&sk->sk_receive_queue, skb);
                 return -EFAULT;
@@ -1217,6 +1417,7 @@ static int iucv_sock_recvmsg(struct kiocb *iocb, struct socket *sock,
                 }
 
                 kfree_skb(skb);
+                atomic_inc(&iucv->msg_recv);
 
                 /* Queue backlog skbs */
                 spin_lock_bh(&iucv->message_q.lock);
@@ -1233,6 +1434,24 @@ static int iucv_sock_recvmsg(struct kiocb *iocb, struct socket *sock,
                 if (skb_queue_empty(&iucv->backlog_skb_q)) {
                         if (!list_empty(&iucv->message_q.list))
                                 iucv_process_message_q(sk);
+                        if (atomic_read(&iucv->msg_recv) >=
+                                                        iucv->msglimit / 2) {
+                                /* send WIN to peer */
+                                blen = sizeof(struct af_iucv_trans_hdr) +
+                                        ETH_HLEN;
+                                sskb = sock_alloc_send_skb(sk, blen, 1, &err);
+                                if (sskb) {
+                                        skb_reserve(sskb,
+                                                sizeof(struct af_iucv_trans_hdr)
+                                                + ETH_HLEN);
+                                        err = afiucv_hs_send(NULL, sk, sskb,
+                                                             AF_IUCV_FLAG_WIN);
+                                }
+                                if (err) {
+                                        sk->sk_state = IUCV_DISCONN;
+                                        sk->sk_state_change(sk);
+                                }
+                        }
                 }
                 spin_unlock_bh(&iucv->message_q.lock);
         }
@@ -1327,8 +1546,8 @@ static int iucv_sock_shutdown(struct socket *sock, int how)
         if (how == SEND_SHUTDOWN || how == SHUTDOWN_MASK) {
                 txmsg.class = 0;
                 txmsg.tag = 0;
-                err = iucv_message_send(iucv->path, &txmsg, IUCV_IPRMDATA, 0,
-                                        (void *) iprm_shutdown, 8);
+                err = pr_iucv->message_send(iucv->path, &txmsg, IUCV_IPRMDATA,
+                                        0, (void *) iprm_shutdown, 8);
                 if (err) {
                         switch (err) {
                         case 1:
@@ -1345,7 +1564,7 @@ static int iucv_sock_shutdown(struct socket *sock, int how)
         }
 
         if (how == RCV_SHUTDOWN || how == SHUTDOWN_MASK) {
-                err = iucv_path_quiesce(iucv_sk(sk)->path, NULL);
+                err = pr_iucv->path_quiesce(iucv->path, NULL);
                 if (err)
                         err = -ENOTCONN;
 
@@ -1372,7 +1591,7 @@ static int iucv_sock_release(struct socket *sock)
 
         /* Unregister with IUCV base support */
         if (iucv_sk(sk)->path) {
-                iucv_path_sever(iucv_sk(sk)->path, NULL);
+                pr_iucv->path_sever(iucv_sk(sk)->path, NULL);
                 iucv_path_free(iucv_sk(sk)->path);
                 iucv_sk(sk)->path = NULL;
         }
@@ -1514,14 +1733,14 @@ static int iucv_callback_connreq(struct iucv_path *path,
         high_nmcpy(user_data, iucv->dst_name);
         ASCEBC(user_data, sizeof(user_data));
         if (sk->sk_state != IUCV_LISTEN) {
-                err = iucv_path_sever(path, user_data);
+                err = pr_iucv->path_sever(path, user_data);
                 iucv_path_free(path);
                 goto fail;
         }
 
         /* Check for backlog size */
         if (sk_acceptq_is_full(sk)) {
-                err = iucv_path_sever(path, user_data);
+                err = pr_iucv->path_sever(path, user_data);
                 iucv_path_free(path);
                 goto fail;
         }
@@ -1529,7 +1748,7 @@ static int iucv_callback_connreq(struct iucv_path *path,
         /* Create the new socket */
         nsk = iucv_sock_alloc(NULL, sk->sk_type, GFP_ATOMIC);
         if (!nsk) {
-                err = iucv_path_sever(path, user_data);
+                err = pr_iucv->path_sever(path, user_data);
                 iucv_path_free(path);
                 goto fail;
         }
@@ -1553,9 +1772,9 @@ static int iucv_callback_connreq(struct iucv_path *path,
         /* set message limit for path based on msglimit of accepting socket */
         niucv->msglimit = iucv->msglimit;
         path->msglim = iucv->msglimit;
-        err = iucv_path_accept(path, &af_iucv_handler, nuser_data, nsk);
+        err = pr_iucv->path_accept(path, &af_iucv_handler, nuser_data, nsk);
         if (err) {
-                err = iucv_path_sever(path, user_data);
+                err = pr_iucv->path_sever(path, user_data);
                 iucv_path_free(path);
                 iucv_sock_kill(nsk);
                 goto fail;
@@ -1589,7 +1808,7 @@ static void iucv_callback_rx(struct iucv_path *path, struct iucv_message *msg)
         int len;
 
         if (sk->sk_shutdown & RCV_SHUTDOWN) {
-                iucv_message_reject(path, msg);
+                pr_iucv->message_reject(path, msg);
                 return;
         }
 
@@ -1600,7 +1819,7 @@ static void iucv_callback_rx(struct iucv_path *path, struct iucv_message *msg)
                 goto save_message;
 
         len = atomic_read(&sk->sk_rmem_alloc);
-        len += iucv_msg_length(msg) + sizeof(struct sk_buff);
+        len += SKB_TRUESIZE(iucv_msg_length(msg));
         if (len > sk->sk_rcvbuf)
                 goto save_message;
 
@@ -1692,6 +1911,389 @@ static void iucv_callback_shutdown(struct iucv_path *path, u8 ipuser[16])
         bh_unlock_sock(sk);
 }
 
+/***************** HiperSockets transport callbacks ********************/
+static void afiucv_swap_src_dest(struct sk_buff *skb)
+{
+        struct af_iucv_trans_hdr *trans_hdr =
+                                (struct af_iucv_trans_hdr *)skb->data;
+        char tmpID[8];
+        char tmpName[8];
+
+        ASCEBC(trans_hdr->destUserID, sizeof(trans_hdr->destUserID));
+        ASCEBC(trans_hdr->destAppName, sizeof(trans_hdr->destAppName));
+        ASCEBC(trans_hdr->srcUserID, sizeof(trans_hdr->srcUserID));
+        ASCEBC(trans_hdr->srcAppName, sizeof(trans_hdr->srcAppName));
+        memcpy(tmpID, trans_hdr->srcUserID, 8);
+        memcpy(tmpName, trans_hdr->srcAppName, 8);
+        memcpy(trans_hdr->srcUserID, trans_hdr->destUserID, 8);
+        memcpy(trans_hdr->srcAppName, trans_hdr->destAppName, 8);
+        memcpy(trans_hdr->destUserID, tmpID, 8);
+        memcpy(trans_hdr->destAppName, tmpName, 8);
+        skb_push(skb, ETH_HLEN);
+        memset(skb->data, 0, ETH_HLEN);
+}
+
+/**
+ * afiucv_hs_callback_syn - react on received SYN
+ **/
+static int afiucv_hs_callback_syn(struct sock *sk, struct sk_buff *skb)
+{
+        struct sock *nsk;
+        struct iucv_sock *iucv, *niucv;
+        struct af_iucv_trans_hdr *trans_hdr;
+        int err;
+
+        iucv = iucv_sk(sk);
+        trans_hdr = (struct af_iucv_trans_hdr *)skb->data;
+        if (!iucv) {
+                /* no sock - connection refused */
+                afiucv_swap_src_dest(skb);
+                trans_hdr->flags = AF_IUCV_FLAG_SYN | AF_IUCV_FLAG_FIN;
+                err = dev_queue_xmit(skb);
+                goto out;
+        }
+
+        nsk = iucv_sock_alloc(NULL, sk->sk_type, GFP_ATOMIC);
+        bh_lock_sock(sk);
+        if ((sk->sk_state != IUCV_LISTEN) ||
+            sk_acceptq_is_full(sk) ||
+            !nsk) {
+                /* error on server socket - connection refused */
+                if (nsk)
+                        sk_free(nsk);
+                afiucv_swap_src_dest(skb);
+                trans_hdr->flags = AF_IUCV_FLAG_SYN | AF_IUCV_FLAG_FIN;
+                err = dev_queue_xmit(skb);
+                bh_unlock_sock(sk);
+                goto out;
+        }
+
+        niucv = iucv_sk(nsk);
+        iucv_sock_init(nsk, sk);
+        niucv->transport = AF_IUCV_TRANS_HIPER;
+        niucv->msglimit = iucv->msglimit;
+        if (!trans_hdr->window)
+                niucv->msglimit_peer = IUCV_HIPER_MSGLIM_DEFAULT;
+        else
+                niucv->msglimit_peer = trans_hdr->window;
+        memcpy(niucv->dst_name, trans_hdr->srcAppName, 8);
+        memcpy(niucv->dst_user_id, trans_hdr->srcUserID, 8);
+        memcpy(niucv->src_name, iucv->src_name, 8);
+        memcpy(niucv->src_user_id, iucv->src_user_id, 8);
+        nsk->sk_bound_dev_if = sk->sk_bound_dev_if;
+        afiucv_swap_src_dest(skb);
+        trans_hdr->flags = AF_IUCV_FLAG_SYN | AF_IUCV_FLAG_ACK;
+        trans_hdr->window = niucv->msglimit;
+        /* if receiver acks the xmit connection is established */
+        err = dev_queue_xmit(skb);
+        if (!err) {
+                iucv_accept_enqueue(sk, nsk);
+                nsk->sk_state = IUCV_CONNECTED;
+                sk->sk_data_ready(sk, 1);
+        } else
+                iucv_sock_kill(nsk);
+        bh_unlock_sock(sk);
+
+out:
+        return NET_RX_SUCCESS;
+}
+
+/**
+ * afiucv_hs_callback_synack() - react on received SYN-ACK
+ **/
+static int afiucv_hs_callback_synack(struct sock *sk, struct sk_buff *skb)
+{
+        struct iucv_sock *iucv = iucv_sk(sk);
+        struct af_iucv_trans_hdr *trans_hdr =
+                                        (struct af_iucv_trans_hdr *)skb->data;
+
+        if (!iucv)
+                goto out;
+        if (sk->sk_state != IUCV_BOUND)
+                goto out;
+        bh_lock_sock(sk);
+        iucv->msglimit_peer = trans_hdr->window;
+        sk->sk_state = IUCV_CONNECTED;
+        sk->sk_state_change(sk);
+        bh_unlock_sock(sk);
+out:
+        kfree_skb(skb);
+        return NET_RX_SUCCESS;
+}
+
+/**
+ * afiucv_hs_callback_synfin() - react on received SYN_FIN
+ **/
+static int afiucv_hs_callback_synfin(struct sock *sk, struct sk_buff *skb)
+{
+        struct iucv_sock *iucv = iucv_sk(sk);
+
+        if (!iucv)
+                goto out;
+        if (sk->sk_state != IUCV_BOUND)
+                goto out;
+        bh_lock_sock(sk);
+        sk->sk_state = IUCV_DISCONN;
+        sk->sk_state_change(sk);
+        bh_unlock_sock(sk);
+out:
+        kfree_skb(skb);
+        return NET_RX_SUCCESS;
+}
+
+/**
+ * afiucv_hs_callback_fin() - react on received FIN
+ **/
+static int afiucv_hs_callback_fin(struct sock *sk, struct sk_buff *skb)
+{
+        struct iucv_sock *iucv = iucv_sk(sk);
+
+        /* other end of connection closed */
+        if (iucv) {
+                bh_lock_sock(sk);
+                if (!list_empty(&iucv->accept_q))
+                        sk->sk_state = IUCV_SEVERED;
+                else
+                        sk->sk_state = IUCV_DISCONN;
+                sk->sk_state_change(sk);
+                bh_unlock_sock(sk);
+        }
+        kfree_skb(skb);
+        return NET_RX_SUCCESS;
+}
+
+/**
+ * afiucv_hs_callback_win() - react on received WIN
+ **/
+static int afiucv_hs_callback_win(struct sock *sk, struct sk_buff *skb)
+{
+        struct iucv_sock *iucv = iucv_sk(sk);
+        struct af_iucv_trans_hdr *trans_hdr =
+                                        (struct af_iucv_trans_hdr *)skb->data;
+
+        if (!iucv)
+                return NET_RX_SUCCESS;
+
+        if (sk->sk_state != IUCV_CONNECTED)
+                return NET_RX_SUCCESS;
+
+        atomic_sub(trans_hdr->window, &iucv->msg_sent);
+        iucv_sock_wake_msglim(sk);
+        return NET_RX_SUCCESS;
+}
+
+/**
+ * afiucv_hs_callback_rx() - react on received data
+ **/
+static int afiucv_hs_callback_rx(struct sock *sk, struct sk_buff *skb)
+{
+        struct iucv_sock *iucv = iucv_sk(sk);
+
+        if (!iucv) {
+                kfree_skb(skb);
+                return NET_RX_SUCCESS;
+        }
+
+        if (sk->sk_state != IUCV_CONNECTED) {
+                kfree_skb(skb);
+                return NET_RX_SUCCESS;
+        }
+
+                /* write stuff from iucv_msg to skb cb */
+        if (skb->len <= sizeof(struct af_iucv_trans_hdr)) {
+                kfree_skb(skb);
+                return NET_RX_SUCCESS;
+        }
+        skb_pull(skb, sizeof(struct af_iucv_trans_hdr));
+        skb_reset_transport_header(skb);
+        skb_reset_network_header(skb);
+        spin_lock(&iucv->message_q.lock);
+        if (skb_queue_empty(&iucv->backlog_skb_q)) {
+                if (sock_queue_rcv_skb(sk, skb)) {
+                        /* handle rcv queue full */
+                        skb_queue_tail(&iucv->backlog_skb_q, skb);
+                }
+        } else
+                skb_queue_tail(&iucv_sk(sk)->backlog_skb_q, skb);
+        spin_unlock(&iucv->message_q.lock);
+        return NET_RX_SUCCESS;
+}
+
+/**
+ * afiucv_hs_rcv() - base function for arriving data through HiperSockets
+ *                   transport
+ *                   called from netif RX softirq
+ **/
+static int afiucv_hs_rcv(struct sk_buff *skb, struct net_device *dev,
+        struct packet_type *pt, struct net_device *orig_dev)
+{
+        struct hlist_node *node;
+        struct sock *sk;
+        struct iucv_sock *iucv;
+        struct af_iucv_trans_hdr *trans_hdr;
+        char nullstring[8];
+        int err = 0;
+
+        skb_pull(skb, ETH_HLEN);
+        trans_hdr = (struct af_iucv_trans_hdr *)skb->data;
+        EBCASC(trans_hdr->destAppName, sizeof(trans_hdr->destAppName));
+        EBCASC(trans_hdr->destUserID, sizeof(trans_hdr->destUserID));
+        EBCASC(trans_hdr->srcAppName, sizeof(trans_hdr->srcAppName));
+        EBCASC(trans_hdr->srcUserID, sizeof(trans_hdr->srcUserID));
+        memset(nullstring, 0, sizeof(nullstring));
+        iucv = NULL;
+        sk = NULL;
+        read_lock(&iucv_sk_list.lock);
+        sk_for_each(sk, node, &iucv_sk_list.head) {
+                if (trans_hdr->flags == AF_IUCV_FLAG_SYN) {
+                        if ((!memcmp(&iucv_sk(sk)->src_name,
+                                     trans_hdr->destAppName, 8)) &&
+                            (!memcmp(&iucv_sk(sk)->src_user_id,
+                                     trans_hdr->destUserID, 8)) &&
+                            (!memcmp(&iucv_sk(sk)->dst_name, nullstring, 8)) &&
+                            (!memcmp(&iucv_sk(sk)->dst_user_id,
+                                     nullstring, 8))) {
+                                iucv = iucv_sk(sk);
+                                break;
+                        }
+                } else {
+                        if ((!memcmp(&iucv_sk(sk)->src_name,
+                                     trans_hdr->destAppName, 8)) &&
+                            (!memcmp(&iucv_sk(sk)->src_user_id,
+                                     trans_hdr->destUserID, 8)) &&
+                            (!memcmp(&iucv_sk(sk)->dst_name,
+                                     trans_hdr->srcAppName, 8)) &&
+                            (!memcmp(&iucv_sk(sk)->dst_user_id,
+                                     trans_hdr->srcUserID, 8))) {
+                                iucv = iucv_sk(sk);
+                                break;
+                        }
+                }
+        }
+        read_unlock(&iucv_sk_list.lock);
+        if (!iucv)
+                sk = NULL;
+
+        /* no sock
+        how should we send with no sock
+        1) send without sock no send rc checking?
+        2) introduce default sock to handle this cases
+
+         SYN -> send SYN|ACK in good case, send SYN|FIN in bad case
+         data -> send FIN
+         SYN|ACK, SYN|FIN, FIN -> no action? */
+
+        switch (trans_hdr->flags) {
+        case AF_IUCV_FLAG_SYN:
+                /* connect request */
+                err = afiucv_hs_callback_syn(sk, skb);
+                break;
+        case (AF_IUCV_FLAG_SYN | AF_IUCV_FLAG_ACK):
+                /* connect request confirmed */
+                err = afiucv_hs_callback_synack(sk, skb);
+                break;
+        case (AF_IUCV_FLAG_SYN | AF_IUCV_FLAG_FIN):
+                /* connect request refused */
+                err = afiucv_hs_callback_synfin(sk, skb);
+                break;
+        case (AF_IUCV_FLAG_FIN):
+                /* close request */
+                err = afiucv_hs_callback_fin(sk, skb);
+                break;
+        case (AF_IUCV_FLAG_WIN):
+                err = afiucv_hs_callback_win(sk, skb);
+                if (skb->len > sizeof(struct af_iucv_trans_hdr))
+                        err = afiucv_hs_callback_rx(sk, skb);
+                else
+                        kfree(skb);
+                break;
+        case 0:
+                /* plain data frame */
+                err = afiucv_hs_callback_rx(sk, skb);
+                break;
+        default:
+                ;
+        }
+
+        return err;
+}
+
+/**
+ * afiucv_hs_callback_txnotify() - handle send notifcations from HiperSockets
+ *                                 transport
+ **/
+static void afiucv_hs_callback_txnotify(struct sk_buff *skb,
+                                        enum iucv_tx_notify n)
+{
+        struct sock *isk = skb->sk;
+        struct sock *sk = NULL;
+        struct iucv_sock *iucv = NULL;
+        struct sk_buff_head *list;
+        struct sk_buff *list_skb;
+        struct sk_buff *this = NULL;
+        unsigned long flags;
+        struct hlist_node *node;
+
+        read_lock(&iucv_sk_list.lock);
+        sk_for_each(sk, node, &iucv_sk_list.head)
+                if (sk == isk) {
+                        iucv = iucv_sk(sk);
+                        break;
+                }
+        read_unlock(&iucv_sk_list.lock);
+
+        if (!iucv)
+                return;
+
+        bh_lock_sock(sk);
+        list = &iucv->send_skb_q;
+        list_skb = list->next;
+        if (skb_queue_empty(list))
+                goto out_unlock;
+
+        spin_lock_irqsave(&list->lock, flags);
+        while (list_skb != (struct sk_buff *)list) {
+                if (skb_shinfo(list_skb) == skb_shinfo(skb)) {
+                        this = list_skb;
+                        switch (n) {
+                        case TX_NOTIFY_OK:
+                                __skb_unlink(this, list);
+                                iucv_sock_wake_msglim(sk);
+                                kfree_skb(this);
+                                break;
+                        case TX_NOTIFY_PENDING:
+                                atomic_inc(&iucv->pendings);
+                                break;
+                        case TX_NOTIFY_DELAYED_OK:
+                                __skb_unlink(this, list);
+                                atomic_dec(&iucv->pendings);
+                                if (atomic_read(&iucv->pendings) <= 0)
+                                        iucv_sock_wake_msglim(sk);
+                                kfree_skb(this);
+                                break;
+                        case TX_NOTIFY_UNREACHABLE:
+                        case TX_NOTIFY_DELAYED_UNREACHABLE:
+                        case TX_NOTIFY_TPQFULL: /* not yet used */
+                        case TX_NOTIFY_GENERALERROR:
+                        case TX_NOTIFY_DELAYED_GENERALERROR:
+                                __skb_unlink(this, list);
+                                kfree_skb(this);
+                                if (!list_empty(&iucv->accept_q))
+                                        sk->sk_state = IUCV_SEVERED;
+                                else
+                                        sk->sk_state = IUCV_DISCONN;
+                                sk->sk_state_change(sk);
+                                break;
+                        }
+                        break;
+                }
+                list_skb = list_skb->next;
+        }
+        spin_unlock_irqrestore(&list->lock, flags);
+
+out_unlock:
+        bh_unlock_sock(sk);
+}
 static const struct proto_ops iucv_sock_ops = {
         .family         = PF_IUCV,
         .owner          = THIS_MODULE,
@@ -1718,71 +2320,104 @@ static const struct net_proto_family iucv_sock_family_ops = {
         .create = iucv_sock_create,
 };
 
-static int __init afiucv_init(void)
+static struct packet_type iucv_packet_type = {
+        .type = cpu_to_be16(ETH_P_AF_IUCV),
+        .func = afiucv_hs_rcv,
+};
+
+static int afiucv_iucv_init(void)
 {
         int err;
 
-        if (!MACHINE_IS_VM) {
-                pr_err("The af_iucv module cannot be loaded"
-                       " without z/VM\n");
-                err = -EPROTONOSUPPORT;
-                goto out;
-        }
-        cpcmd("QUERY USERID", iucv_userid, sizeof(iucv_userid), &err);
-        if (unlikely(err)) {
-                WARN_ON(err);
-                err = -EPROTONOSUPPORT;
-                goto out;
-        }
-
-        err = iucv_register(&af_iucv_handler, 0);
+        err = pr_iucv->iucv_register(&af_iucv_handler, 0);
         if (err)
                 goto out;
-        err = proto_register(&iucv_proto, 0);
-        if (err)
-                goto out_iucv;
-        err = sock_register(&iucv_sock_family_ops);
-        if (err)
-                goto out_proto;
         /* establish dummy device */
+        af_iucv_driver.bus = pr_iucv->bus;
         err = driver_register(&af_iucv_driver);
         if (err)
-                goto out_sock;
+                goto out_iucv;
         af_iucv_dev = kzalloc(sizeof(struct device), GFP_KERNEL);
         if (!af_iucv_dev) {
                 err = -ENOMEM;
                 goto out_driver;
         }
         dev_set_name(af_iucv_dev, "af_iucv");
-        af_iucv_dev->bus = &iucv_bus;
-        af_iucv_dev->parent = iucv_root;
+        af_iucv_dev->bus = pr_iucv->bus;
+        af_iucv_dev->parent = pr_iucv->root;
         af_iucv_dev->release = (void (*)(struct device *))kfree;
         af_iucv_dev->driver = &af_iucv_driver;
         err = device_register(af_iucv_dev);
         if (err)
                 goto out_driver;
-
         return 0;
 
 out_driver:
         driver_unregister(&af_iucv_driver);
+out_iucv:
+        pr_iucv->iucv_unregister(&af_iucv_handler, 0);
+out:
+        return err;
+}
+
+static int __init afiucv_init(void)
+{
+        int err;
+
+        if (MACHINE_IS_VM) {
+                cpcmd("QUERY USERID", iucv_userid, sizeof(iucv_userid), &err);
+                if (unlikely(err)) {
+                        WARN_ON(err);
+                        err = -EPROTONOSUPPORT;
+                        goto out;
+                }
+
+                pr_iucv = try_then_request_module(symbol_get(iucv_if), "iucv");
+                if (!pr_iucv) {
+                        printk(KERN_WARNING "iucv_if lookup failed\n");
+                        memset(&iucv_userid, 0, sizeof(iucv_userid));
+                }
+        } else {
+                memset(&iucv_userid, 0, sizeof(iucv_userid));
+                pr_iucv = NULL;
+        }
+
+        err = proto_register(&iucv_proto, 0);
+        if (err)
+                goto out;
+        err = sock_register(&iucv_sock_family_ops);
+        if (err)
+                goto out_proto;
+
+        if (pr_iucv) {
+                err = afiucv_iucv_init();
+                if (err)
+                        goto out_sock;
+        }
+        dev_add_pack(&iucv_packet_type);
+        return 0;
+
 out_sock:
         sock_unregister(PF_IUCV);
 out_proto:
         proto_unregister(&iucv_proto);
-out_iucv:
-        iucv_unregister(&af_iucv_handler, 0);
 out:
+        if (pr_iucv)
+                symbol_put(iucv_if);
         return err;
 }
 
 static void __exit afiucv_exit(void)
 {
-        device_unregister(af_iucv_dev);
-        driver_unregister(&af_iucv_driver);
+        if (pr_iucv) {
+                device_unregister(af_iucv_dev);
+                driver_unregister(&af_iucv_driver);
+                pr_iucv->iucv_unregister(&af_iucv_handler, 0);
+                symbol_put(iucv_if);
+        }
+        dev_remove_pack(&iucv_packet_type);
         sock_unregister(PF_IUCV);
         proto_unregister(&iucv_proto);
-        iucv_unregister(&af_iucv_handler, 0);
 }
 
 module_init(afiucv_init);
@@ -1793,3 +2428,4 @@ MODULE_DESCRIPTION("IUCV Sockets ver " VERSION);
 MODULE_VERSION(VERSION);
 MODULE_LICENSE("GPL");
 MODULE_ALIAS_NETPROTO(PF_IUCV);
+
diff --git a/net/iucv/iucv.c b/net/iucv/iucv.c
index 075a3808aa40..403be43b793d 100644
--- a/net/iucv/iucv.c
+++ b/net/iucv/iucv.c
@@ -1974,6 +1974,27 @@ out:
         return rc;
 }
 
+struct iucv_interface iucv_if = {
+        .message_receive = iucv_message_receive,
+        .__message_receive = __iucv_message_receive,
+        .message_reply = iucv_message_reply,
+        .message_reject = iucv_message_reject,
+        .message_send = iucv_message_send,
+        .__message_send = __iucv_message_send,
+        .message_send2way = iucv_message_send2way,
+        .message_purge = iucv_message_purge,
+        .path_accept = iucv_path_accept,
+        .path_connect = iucv_path_connect,
+        .path_quiesce = iucv_path_quiesce,
+        .path_resume = iucv_path_resume,
+        .path_sever = iucv_path_sever,
+        .iucv_register = iucv_register,
+        .iucv_unregister = iucv_unregister,
+        .bus = NULL,
+        .root = NULL,
+};
+EXPORT_SYMBOL(iucv_if);
+
 /**
  * iucv_init
  *
@@ -2038,6 +2059,8 @@ static int __init iucv_init(void)
         rc = bus_register(&iucv_bus);
         if (rc)
                 goto out_reboot;
+        iucv_if.root = iucv_root;
+        iucv_if.bus = &iucv_bus;
         return 0;
 
 out_reboot:
diff --git a/net/l2tp/l2tp_core.c b/net/l2tp/l2tp_core.c
index 34b2ddeacb67..bf8d50c67931 100644
--- a/net/l2tp/l2tp_core.c
+++ b/net/l2tp/l2tp_core.c
@@ -397,6 +397,7 @@ static void l2tp_recv_dequeue(struct l2tp_session *session)
          * expect to send up next, dequeue it and any other
          * in-sequence packets behind it.
          */
+start:
         spin_lock_bh(&session->reorder_q.lock);
         skb_queue_walk_safe(&session->reorder_q, skb, tmp) {
                 if (time_after(jiffies, L2TP_SKB_CB(skb)->expires)) {
@@ -433,7 +434,7 @@ static void l2tp_recv_dequeue(struct l2tp_session *session)
                  */
                 spin_unlock_bh(&session->reorder_q.lock);
                 l2tp_recv_dequeue_skb(session, skb);
-                spin_lock_bh(&session->reorder_q.lock);
+                goto start;
         }
 
 out:
diff --git a/net/l2tp/l2tp_ppp.c b/net/l2tp/l2tp_ppp.c
index f42cd0915966..8a90d756c904 100644
--- a/net/l2tp/l2tp_ppp.c
+++ b/net/l2tp/l2tp_ppp.c
@@ -395,6 +395,7 @@ static int pppol2tp_xmit(struct ppp_channel *chan, struct sk_buff *skb)
         struct pppol2tp_session *ps;
         int old_headroom;
         int new_headroom;
+        int uhlen, headroom;
 
         if (sock_flag(sk, SOCK_DEAD) || !(sk->sk_state & PPPOX_CONNECTED))
                 goto abort;
@@ -413,7 +414,13 @@ static int pppol2tp_xmit(struct ppp_channel *chan, struct sk_buff *skb)
                 goto abort_put_sess;
 
         old_headroom = skb_headroom(skb);
-        if (skb_cow_head(skb, sizeof(ppph)))
+        uhlen = (tunnel->encap == L2TP_ENCAPTYPE_UDP) ? sizeof(struct udphdr) : 0;
+        headroom = NET_SKB_PAD +
+                   sizeof(struct iphdr) + /* IP header */
+                   uhlen +              /* UDP header (if L2TP_ENCAPTYPE_UDP) */
+                   session->hdr_len +   /* L2TP header */
+                   sizeof(ppph);        /* PPP header */
+        if (skb_cow_head(skb, headroom))
                 goto abort_put_sess_tun;
 
         new_headroom = skb_headroom(skb);
diff --git a/net/lapb/lapb_iface.c b/net/lapb/lapb_iface.c
index 956b7e47dc52..8d0324bac01c 100644
--- a/net/lapb/lapb_iface.c
+++ b/net/lapb/lapb_iface.c
@@ -139,7 +139,8 @@ out:
         return lapb;
 }
 
-int lapb_register(struct net_device *dev, struct lapb_register_struct *callbacks)
+int lapb_register(struct net_device *dev,
+                  const struct lapb_register_struct *callbacks)
 {
         struct lapb_cb *lapb;
         int rc = LAPB_BADTOKEN;
@@ -158,7 +159,7 @@ int lapb_register(struct net_device *dev, struct lapb_register_struct *callbacks
                 goto out;
 
         lapb->dev       = dev;
-        lapb->callbacks = *callbacks;
+        lapb->callbacks = callbacks;
 
         __lapb_insert_cb(lapb);
 
@@ -380,32 +381,32 @@ int lapb_data_received(struct net_device *dev, struct sk_buff *skb)
 
 void lapb_connect_confirmation(struct lapb_cb *lapb, int reason)
 {
-        if (lapb->callbacks.connect_confirmation)
-                lapb->callbacks.connect_confirmation(lapb->dev, reason);
+        if (lapb->callbacks->connect_confirmation)
+                lapb->callbacks->connect_confirmation(lapb->dev, reason);
 }
 
 void lapb_connect_indication(struct lapb_cb *lapb, int reason)
 {
-        if (lapb->callbacks.connect_indication)
-                lapb->callbacks.connect_indication(lapb->dev, reason);
+        if (lapb->callbacks->connect_indication)
+                lapb->callbacks->connect_indication(lapb->dev, reason);
 }
 
 void lapb_disconnect_confirmation(struct lapb_cb *lapb, int reason)
 {
-        if (lapb->callbacks.disconnect_confirmation)
-                lapb->callbacks.disconnect_confirmation(lapb->dev, reason);
+        if (lapb->callbacks->disconnect_confirmation)
+                lapb->callbacks->disconnect_confirmation(lapb->dev, reason);
 }
 
 void lapb_disconnect_indication(struct lapb_cb *lapb, int reason)
 {
-        if (lapb->callbacks.disconnect_indication)
-                lapb->callbacks.disconnect_indication(lapb->dev, reason);
+        if (lapb->callbacks->disconnect_indication)
+                lapb->callbacks->disconnect_indication(lapb->dev, reason);
 }
 
 int lapb_data_indication(struct lapb_cb *lapb, struct sk_buff *skb)
 {
-        if (lapb->callbacks.data_indication)
-                return lapb->callbacks.data_indication(lapb->dev, skb);
+        if (lapb->callbacks->data_indication)
+                return lapb->callbacks->data_indication(lapb->dev, skb);
 
         kfree_skb(skb);
         return NET_RX_SUCCESS; /* For now; must be != NET_RX_DROP */
@@ -415,8 +416,8 @@ int lapb_data_transmit(struct lapb_cb *lapb, struct sk_buff *skb)
 {
         int used = 0;
 
-        if (lapb->callbacks.data_transmit) {
-                lapb->callbacks.data_transmit(lapb->dev, skb);
+        if (lapb->callbacks->data_transmit) {
+                lapb->callbacks->data_transmit(lapb->dev, skb);
                 used = 1;
         }
 
diff --git a/net/llc/llc_input.c b/net/llc/llc_input.c
index 903242111317..e32cab44ea95 100644
--- a/net/llc/llc_input.c
+++ b/net/llc/llc_input.c
@@ -13,6 +13,7 @@
  */
 #include <linux/netdevice.h>
 #include <linux/slab.h>
+#include <linux/export.h>
 #include <net/net_namespace.h>
 #include <net/llc.h>
 #include <net/llc_pdu.h>
diff --git a/net/llc/llc_output.c b/net/llc/llc_output.c
index b38a1079a98e..b658cba89fdd 100644
--- a/net/llc/llc_output.c
+++ b/net/llc/llc_output.c
@@ -18,6 +18,7 @@
 #include <linux/netdevice.h>
 #include <linux/trdevice.h>
 #include <linux/skbuff.h>
+#include <linux/export.h>
 #include <net/llc.h>
 #include <net/llc_pdu.h>
 
diff --git a/net/llc/llc_proc.c b/net/llc/llc_proc.c
index 7af1ff2d1f19..a1839c004357 100644
--- a/net/llc/llc_proc.c
+++ b/net/llc/llc_proc.c
@@ -17,6 +17,7 @@
 #include <linux/proc_fs.h>
 #include <linux/errno.h>
 #include <linux/seq_file.h>
+#include <linux/export.h>
 #include <net/net_namespace.h>
 #include <net/sock.h>
 #include <net/llc.h>
diff --git a/net/mac80211/Kconfig b/net/mac80211/Kconfig
index f5fdfcbf552a..7d3b438755f0 100644
--- a/net/mac80211/Kconfig
+++ b/net/mac80211/Kconfig
@@ -199,6 +199,19 @@ config MAC80211_VERBOSE_MPL_DEBUG
 
           Do not select this option.
 
+config MAC80211_VERBOSE_MPATH_DEBUG
+        bool "Verbose mesh path debugging"
+        depends on MAC80211_DEBUG_MENU
+        depends on MAC80211_MESH
+        ---help---
+          Selecting this option causes mac80211 to print out very
+          verbose mesh path selection debugging messages (when mac80211
+          is taking part in a mesh network).
+          It should not be selected on production systems as those
+          messages are remotely triggerable.
+
+          Do not select this option.
+
 config MAC80211_VERBOSE_MHWMP_DEBUG
         bool "Verbose mesh HWMP routing debugging"
         depends on MAC80211_DEBUG_MENU
@@ -212,6 +225,18 @@ config MAC80211_VERBOSE_MHWMP_DEBUG
 
           Do not select this option.
 
+config MAC80211_VERBOSE_TDLS_DEBUG
+        bool "Verbose TDLS debugging"
+        depends on MAC80211_DEBUG_MENU
+        ---help---
+          Selecting this option causes mac80211 to print out very
+          verbose TDLS selection debugging messages (when mac80211
+          is a TDLS STA).
+          It should not be selected on production systems as those
+          messages are remotely triggerable.
+
+          Do not select this option.
+
 config MAC80211_DEBUG_COUNTERS
         bool "Extra statistics for TX/RX debugging"
         depends on MAC80211_DEBUG_MENU
diff --git a/net/mac80211/agg-rx.c b/net/mac80211/agg-rx.c
index fd1aaf2a4a6c..93b243422659 100644
--- a/net/mac80211/agg-rx.c
+++ b/net/mac80211/agg-rx.c
@@ -38,6 +38,7 @@
 
 #include <linux/ieee80211.h>
 #include <linux/slab.h>
+#include <linux/export.h>
 #include <net/mac80211.h>
 #include "ieee80211_i.h"
 #include "driver-ops.h"
@@ -69,7 +70,7 @@ void ___ieee80211_stop_rx_ba_session(struct sta_info *sta, u16 tid,
         if (!tid_rx)
                 return;
 
-        rcu_assign_pointer(sta->ampdu_mlme.tid_rx[tid], NULL);
+        RCU_INIT_POINTER(sta->ampdu_mlme.tid_rx[tid], NULL);
 
 #ifdef CONFIG_MAC80211_HT_DEBUG
         printk(KERN_DEBUG "Rx BA session stop requested for %pM tid %u\n",
@@ -167,12 +168,8 @@ static void ieee80211_send_addba_resp(struct ieee80211_sub_if_data *sdata, u8 *d
         u16 capab;
 
         skb = dev_alloc_skb(sizeof(*mgmt) + local->hw.extra_tx_headroom);
-
-        if (!skb) {
-                printk(KERN_DEBUG "%s: failed to allocate buffer "
-                       "for addba resp frame\n", sdata->name);
+        if (!skb)
                 return;
-        }
 
         skb_reserve(skb, local->hw.extra_tx_headroom);
         mgmt = (struct ieee80211_mgmt *) skb_put(skb, 24);
@@ -227,7 +224,7 @@ void ieee80211_process_addba_request(struct ieee80211_local *local,
 
         status = WLAN_STATUS_REQUEST_DECLINED;
 
-        if (test_sta_flags(sta, WLAN_STA_BLOCK_BA)) {
+        if (test_sta_flag(sta, WLAN_STA_BLOCK_BA)) {
 #ifdef CONFIG_MAC80211_HT_DEBUG
                 printk(KERN_DEBUG "Suspend in progress. "
                        "Denying ADDBA request\n");
@@ -279,14 +276,8 @@ void ieee80211_process_addba_request(struct ieee80211_local *local,
 
         /* prepare A-MPDU MLME for Rx aggregation */
         tid_agg_rx = kmalloc(sizeof(struct tid_ampdu_rx), GFP_KERNEL);
-        if (!tid_agg_rx) {
-#ifdef CONFIG_MAC80211_HT_DEBUG
-                if (net_ratelimit())
-                        printk(KERN_ERR "allocate rx mlme to tid %d failed\n",
-                                        tid);
-#endif
+        if (!tid_agg_rx)
                 goto end;
-        }
 
         spin_lock_init(&tid_agg_rx->reorder_lock);
 
@@ -306,11 +297,6 @@ void ieee80211_process_addba_request(struct ieee80211_local *local,
         tid_agg_rx->reorder_time =
                 kcalloc(buf_size, sizeof(unsigned long), GFP_KERNEL);
         if (!tid_agg_rx->reorder_buf || !tid_agg_rx->reorder_time) {
-#ifdef CONFIG_MAC80211_HT_DEBUG
-                if (net_ratelimit())
-                        printk(KERN_ERR "can not allocate reordering buffer "
-                               "to tid %d\n", tid);
-#endif
                 kfree(tid_agg_rx->reorder_buf);
                 kfree(tid_agg_rx->reorder_time);
                 kfree(tid_agg_rx);
@@ -340,7 +326,7 @@ void ieee80211_process_addba_request(struct ieee80211_local *local,
         status = WLAN_STATUS_SUCCESS;
 
         /* activate it for RX */
-        rcu_assign_pointer(sta->ampdu_mlme.tid_rx[tid], tid_agg_rx);
+        RCU_INIT_POINTER(sta->ampdu_mlme.tid_rx[tid], tid_agg_rx);
 
         if (timeout)
                 mod_timer(&tid_agg_rx->session_timer, TU_TO_EXP_TIME(timeout));
diff --git a/net/mac80211/agg-tx.c b/net/mac80211/agg-tx.c
index c8be8eff70da..b3f65520e7a7 100644
--- a/net/mac80211/agg-tx.c
+++ b/net/mac80211/agg-tx.c
@@ -15,6 +15,7 @@
 
 #include <linux/ieee80211.h>
 #include <linux/slab.h>
+#include <linux/export.h>
 #include <net/mac80211.h>
 #include "ieee80211_i.h"
 #include "driver-ops.h"
@@ -68,11 +69,9 @@ static void ieee80211_send_addba_request(struct ieee80211_sub_if_data *sdata,
 
         skb = dev_alloc_skb(sizeof(*mgmt) + local->hw.extra_tx_headroom);
 
-        if (!skb) {
-                printk(KERN_ERR "%s: failed to allocate buffer "
-                                "for addba request frame\n", sdata->name);
+        if (!skb)
                 return;
-        }
+
         skb_reserve(skb, local->hw.extra_tx_headroom);
         mgmt = (struct ieee80211_mgmt *) skb_put(skb, 24);
         memset(mgmt, 0, 24);
@@ -106,19 +105,18 @@ static void ieee80211_send_addba_request(struct ieee80211_sub_if_data *sdata,
         ieee80211_tx_skb(sdata, skb);
 }
 
-void ieee80211_send_bar(struct ieee80211_sub_if_data *sdata, u8 *ra, u16 tid, u16 ssn)
+void ieee80211_send_bar(struct ieee80211_vif *vif, u8 *ra, u16 tid, u16 ssn)
 {
+        struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
         struct ieee80211_local *local = sdata->local;
         struct sk_buff *skb;
         struct ieee80211_bar *bar;
         u16 bar_control = 0;
 
         skb = dev_alloc_skb(sizeof(*bar) + local->hw.extra_tx_headroom);
-        if (!skb) {
-                printk(KERN_ERR "%s: failed to allocate buffer for "
-                        "bar frame\n", sdata->name);
+        if (!skb)
                 return;
-        }
+
         skb_reserve(skb, local->hw.extra_tx_headroom);
         bar = (struct ieee80211_bar *)skb_put(skb, sizeof(*bar));
         memset(bar, 0, sizeof(*bar));
@@ -128,13 +126,14 @@ void ieee80211_send_bar(struct ieee80211_sub_if_data *sdata, u8 *ra, u16 tid, u1
         memcpy(bar->ta, sdata->vif.addr, ETH_ALEN);
         bar_control |= (u16)IEEE80211_BAR_CTRL_ACK_POLICY_NORMAL;
         bar_control |= (u16)IEEE80211_BAR_CTRL_CBMTID_COMPRESSED_BA;
-        bar_control |= (u16)(tid << 12);
+        bar_control |= (u16)(tid << IEEE80211_BAR_CTRL_TID_INFO_SHIFT);
         bar->control = cpu_to_le16(bar_control);
         bar->start_seq_num = cpu_to_le16(ssn);
 
         IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_INTFL_DONT_ENCRYPT;
         ieee80211_tx_skb(sdata, skb);
 }
+EXPORT_SYMBOL(ieee80211_send_bar);
 
 void ieee80211_assign_tid_tx(struct sta_info *sta, int tid,
                              struct tid_ampdu_tx *tid_tx)
@@ -364,7 +363,8 @@ int ieee80211_start_tx_ba_session(struct ieee80211_sta *pubsta, u16 tid,
                 return -EINVAL;
 
         if ((tid >= STA_TID_NUM) ||
-            !(local->hw.flags & IEEE80211_HW_AMPDU_AGGREGATION))
+            !(local->hw.flags & IEEE80211_HW_AMPDU_AGGREGATION) ||
+            (local->hw.flags & IEEE80211_HW_TX_AMPDU_SETUP_IN_HW))
                 return -EINVAL;
 
 #ifdef CONFIG_MAC80211_HT_DEBUG
@@ -383,7 +383,7 @@ int ieee80211_start_tx_ba_session(struct ieee80211_sta *pubsta, u16 tid,
             sdata->vif.type != NL80211_IFTYPE_AP)
                 return -EINVAL;
 
-        if (test_sta_flags(sta, WLAN_STA_BLOCK_BA)) {
+        if (test_sta_flag(sta, WLAN_STA_BLOCK_BA)) {
 #ifdef CONFIG_MAC80211_HT_DEBUG
                 printk(KERN_DEBUG "BA sessions blocked. "
                        "Denying BA session request\n");
@@ -413,11 +413,6 @@ int ieee80211_start_tx_ba_session(struct ieee80211_sta *pubsta, u16 tid,
         /* prepare A-MPDU MLME for Tx aggregation */
         tid_tx = kzalloc(sizeof(struct tid_ampdu_tx), GFP_ATOMIC);
         if (!tid_tx) {
-#ifdef CONFIG_MAC80211_HT_DEBUG
-                if (net_ratelimit())
-                        printk(KERN_ERR "allocate tx mlme to tid %d failed\n",
-                                        tid);
-#endif
                 ret = -ENOMEM;
                 goto err_unlock_sta;
         }
@@ -574,14 +569,9 @@ void ieee80211_start_tx_ba_cb_irqsafe(struct ieee80211_vif *vif,
         struct ieee80211_ra_tid *ra_tid;
         struct sk_buff *skb = dev_alloc_skb(0);
 
-        if (unlikely(!skb)) {
-#ifdef CONFIG_MAC80211_HT_DEBUG
-                if (net_ratelimit())
-                        printk(KERN_WARNING "%s: Not enough memory, "
-                               "dropping start BA session", sdata->name);
-#endif
+        if (unlikely(!skb))
                 return;
-        }
+
         ra_tid = (struct ieee80211_ra_tid *) &skb->cb;
         memcpy(&ra_tid->ra, ra, ETH_ALEN);
         ra_tid->tid = tid;
@@ -727,14 +717,9 @@ void ieee80211_stop_tx_ba_cb_irqsafe(struct ieee80211_vif *vif,
         struct ieee80211_ra_tid *ra_tid;
         struct sk_buff *skb = dev_alloc_skb(0);
 
-        if (unlikely(!skb)) {
-#ifdef CONFIG_MAC80211_HT_DEBUG
-                if (net_ratelimit())
-                        printk(KERN_WARNING "%s: Not enough memory, "
-                               "dropping stop BA session", sdata->name);
-#endif
+        if (unlikely(!skb))
                 return;
-        }
+
         ra_tid = (struct ieee80211_ra_tid *) &skb->cb;
         memcpy(&ra_tid->ra, ra, ETH_ALEN);
         ra_tid->tid = tid;
@@ -777,18 +762,14 @@ void ieee80211_process_addba_resp(struct ieee80211_local *local,
 #ifdef CONFIG_MAC80211_HT_DEBUG
         printk(KERN_DEBUG "switched off addBA timer for tid %d\n", tid);
 #endif
-
+        /*
+         * IEEE 802.11-2007 7.3.1.14:
+         * In an ADDBA Response frame, when the Status Code field
+         * is set to 0, the Buffer Size subfield is set to a value
+         * of at least 1.
+         */
         if (le16_to_cpu(mgmt->u.action.u.addba_resp.status)
-                        == WLAN_STATUS_SUCCESS) {
-                /*
-                 * IEEE 802.11-2007 7.3.1.14:
-                 * In an ADDBA Response frame, when the Status Code field
-                 * is set to 0, the Buffer Size subfield is set to a value
-                 * of at least 1.
-                 */
-                if (!buf_size)
-                        goto out;
-
+                        == WLAN_STATUS_SUCCESS && buf_size) {
                 if (test_and_set_bit(HT_AGG_STATE_RESPONSE_RECEIVED,
                                      &tid_tx->state)) {
                         /* ignore duplicate response */
diff --git a/net/mac80211/cfg.c b/net/mac80211/cfg.c
index 3d1b091d9b2e..d06c65fa5526 100644
--- a/net/mac80211/cfg.c
+++ b/net/mac80211/cfg.c
@@ -12,6 +12,7 @@
 #include <linux/slab.h>
 #include <net/net_namespace.h>
 #include <linux/rcupdate.h>
+#include <linux/if_ether.h>
 #include <net/cfg80211.h>
 #include "ieee80211_i.h"
 #include "driver-ops.h"
@@ -62,7 +63,7 @@ static int ieee80211_change_iface(struct wiphy *wiphy,
 
         if (type == NL80211_IFTYPE_AP_VLAN &&
             params && params->use_4addr == 0)
-                rcu_assign_pointer(sdata->u.vlan.sta, NULL);
+                RCU_INIT_POINTER(sdata->u.vlan.sta, NULL);
         else if (type == NL80211_IFTYPE_STATION &&
                  params && params->use_4addr >= 0)
                 sdata->u.mgd.use_4addr = params->use_4addr;
@@ -343,7 +344,8 @@ static void sta_set_sinfo(struct sta_info *sta, struct station_info *sinfo)
                         STATION_INFO_RX_BITRATE |
                         STATION_INFO_RX_DROP_MISC |
                         STATION_INFO_BSS_PARAM |
-                        STATION_INFO_CONNECTED_TIME;
+                        STATION_INFO_CONNECTED_TIME |
+                        STATION_INFO_STA_FLAGS;
 
         do_posix_clock_monotonic_gettime(&uptime);
         sinfo->connected_time = uptime.tv_sec - sta->last_connected;
@@ -403,6 +405,23 @@ static void sta_set_sinfo(struct sta_info *sta, struct station_info *sinfo)
                 sinfo->bss_param.flags |= BSS_PARAM_FLAGS_SHORT_SLOT_TIME;
         sinfo->bss_param.dtim_period = sdata->local->hw.conf.ps_dtim_period;
         sinfo->bss_param.beacon_interval = sdata->vif.bss_conf.beacon_int;
+
+        sinfo->sta_flags.set = 0;
+        sinfo->sta_flags.mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
+                                BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
+                                BIT(NL80211_STA_FLAG_WME) |
+                                BIT(NL80211_STA_FLAG_MFP) |
+                                BIT(NL80211_STA_FLAG_AUTHENTICATED);
+        if (test_sta_flag(sta, WLAN_STA_AUTHORIZED))
+                sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_AUTHORIZED);
+        if (test_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE))
+                sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_SHORT_PREAMBLE);
+        if (test_sta_flag(sta, WLAN_STA_WME))
+                sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_WME);
+        if (test_sta_flag(sta, WLAN_STA_MFP))
+                sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_MFP);
+        if (test_sta_flag(sta, WLAN_STA_AUTH))
+                sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_AUTHENTICATED);
 }
 
 
@@ -455,6 +474,20 @@ static int ieee80211_get_station(struct wiphy *wiphy, struct net_device *dev,
         return ret;
 }
 
+static void ieee80211_config_ap_ssid(struct ieee80211_sub_if_data *sdata,
+                                     struct beacon_parameters *params)
+{
+        struct ieee80211_bss_conf *bss_conf = &sdata->vif.bss_conf;
+
+        bss_conf->ssid_len = params->ssid_len;
+
+        if (params->ssid_len)
+                memcpy(bss_conf->ssid, params->ssid, params->ssid_len);
+
+        bss_conf->hidden_ssid =
+                (params->hidden_ssid != NL80211_HIDDEN_SSID_NOT_IN_USE);
+}
+
 /*
  * This handles both adding a beacon and setting new beacon info
  */
@@ -542,14 +575,17 @@ static int ieee80211_config_beacon(struct ieee80211_sub_if_data *sdata,
 
         sdata->vif.bss_conf.dtim_period = new->dtim_period;
 
-        rcu_assign_pointer(sdata->u.ap.beacon, new);
+        RCU_INIT_POINTER(sdata->u.ap.beacon, new);
 
         synchronize_rcu();
 
         kfree(old);
 
+        ieee80211_config_ap_ssid(sdata, params);
+
         ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BEACON_ENABLED |
-                                                BSS_CHANGED_BEACON);
+                                                BSS_CHANGED_BEACON |
+                                                BSS_CHANGED_SSID);
         return 0;
 }
 
@@ -594,7 +630,7 @@ static int ieee80211_del_beacon(struct wiphy *wiphy, struct net_device *dev)
         if (!old)
                 return -ENOENT;
 
-        rcu_assign_pointer(sdata->u.ap.beacon, NULL);
+        RCU_INIT_POINTER(sdata->u.ap.beacon, NULL);
         synchronize_rcu();
         kfree(old);
 
@@ -650,7 +686,6 @@ static void sta_apply_parameters(struct ieee80211_local *local,
                                  struct sta_info *sta,
                                  struct station_parameters *params)
 {
-        unsigned long flags;
         u32 rates;
         int i, j;
         struct ieee80211_supported_band *sband;
@@ -659,43 +694,58 @@ static void sta_apply_parameters(struct ieee80211_local *local,
 
         sband = local->hw.wiphy->bands[local->oper_channel->band];
 
-        spin_lock_irqsave(&sta->flaglock, flags);
         mask = params->sta_flags_mask;
         set = params->sta_flags_set;
 
         if (mask & BIT(NL80211_STA_FLAG_AUTHORIZED)) {
-                sta->flags &= ~WLAN_STA_AUTHORIZED;
                 if (set & BIT(NL80211_STA_FLAG_AUTHORIZED))
-                        sta->flags |= WLAN_STA_AUTHORIZED;
+                        set_sta_flag(sta, WLAN_STA_AUTHORIZED);
+                else
+                        clear_sta_flag(sta, WLAN_STA_AUTHORIZED);
         }
 
         if (mask & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE)) {
-                sta->flags &= ~WLAN_STA_SHORT_PREAMBLE;
                 if (set & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE))
-                        sta->flags |= WLAN_STA_SHORT_PREAMBLE;
+                        set_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE);
+                else
+                        clear_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE);
         }
 
         if (mask & BIT(NL80211_STA_FLAG_WME)) {
-                sta->flags &= ~WLAN_STA_WME;
-                sta->sta.wme = false;
                 if (set & BIT(NL80211_STA_FLAG_WME)) {
-                        sta->flags |= WLAN_STA_WME;
+                        set_sta_flag(sta, WLAN_STA_WME);
                         sta->sta.wme = true;
+                } else {
+                        clear_sta_flag(sta, WLAN_STA_WME);
+                        sta->sta.wme = false;
                 }
         }
 
         if (mask & BIT(NL80211_STA_FLAG_MFP)) {
-                sta->flags &= ~WLAN_STA_MFP;
                 if (set & BIT(NL80211_STA_FLAG_MFP))
-                        sta->flags |= WLAN_STA_MFP;
+                        set_sta_flag(sta, WLAN_STA_MFP);
+                else
+                        clear_sta_flag(sta, WLAN_STA_MFP);
         }
 
         if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED)) {
-                sta->flags &= ~WLAN_STA_AUTH;
                 if (set & BIT(NL80211_STA_FLAG_AUTHENTICATED))
-                        sta->flags |= WLAN_STA_AUTH;
+                        set_sta_flag(sta, WLAN_STA_AUTH);
+                else
+                        clear_sta_flag(sta, WLAN_STA_AUTH);
+        }
+
+        if (mask & BIT(NL80211_STA_FLAG_TDLS_PEER)) {
+                if (set & BIT(NL80211_STA_FLAG_TDLS_PEER))
+                        set_sta_flag(sta, WLAN_STA_TDLS_PEER);
+                else
+                        clear_sta_flag(sta, WLAN_STA_TDLS_PEER);
+        }
+
+        if (params->sta_modify_mask & STATION_PARAM_APPLY_UAPSD) {
+                sta->sta.uapsd_queues = params->uapsd_queues;
+                sta->sta.max_sp = params->max_sp;
         }
-        spin_unlock_irqrestore(&sta->flaglock, flags);
 
         /*
          * cfg80211 validates this (1-2007) and allows setting the AID
@@ -782,11 +832,18 @@ static int ieee80211_add_station(struct wiphy *wiphy, struct net_device *dev,
         if (is_multicast_ether_addr(mac))
                 return -EINVAL;
 
+        /* Only TDLS-supporting stations can add TDLS peers */
+        if ((params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) &&
+            !((wiphy->flags & WIPHY_FLAG_SUPPORTS_TDLS) &&
+              sdata->vif.type == NL80211_IFTYPE_STATION))
+                return -ENOTSUPP;
+
         sta = sta_info_alloc(sdata, mac, GFP_KERNEL);
         if (!sta)
                 return -ENOMEM;
 
-        sta->flags = WLAN_STA_AUTH | WLAN_STA_ASSOC;
+        set_sta_flag(sta, WLAN_STA_AUTH);
+        set_sta_flag(sta, WLAN_STA_ASSOC);
 
         sta_apply_parameters(local, sta, params);
 
@@ -842,6 +899,14 @@ static int ieee80211_change_station(struct wiphy *wiphy,
                 return -ENOENT;
         }
 
+        /* The TDLS bit cannot be toggled after the STA was added */
+        if ((params->sta_flags_mask & BIT(NL80211_STA_FLAG_TDLS_PEER)) &&
+            !!(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) !=
+            !!test_sta_flag(sta, WLAN_STA_TDLS_PEER)) {
+                rcu_read_unlock();
+                return -EINVAL;
+        }
+
         if (params->vlan && params->vlan != sta->sdata->dev) {
                 vlansdata = IEEE80211_DEV_TO_SUB_IF(params->vlan);
 
@@ -857,7 +922,7 @@ static int ieee80211_change_station(struct wiphy *wiphy,
                                 return -EBUSY;
                         }
 
-                        rcu_assign_pointer(vlansdata->u.vlan.sta, sta);
+                        RCU_INIT_POINTER(vlansdata->u.vlan.sta, sta);
                 }
 
                 sta->sdata = vlansdata;
@@ -918,7 +983,7 @@ static int ieee80211_del_mpath(struct wiphy *wiphy, struct net_device *dev,
         if (dst)
                 return mesh_path_del(dst, sdata);
 
-        mesh_path_flush(sdata);
+        mesh_path_flush_by_iface(sdata);
         return 0;
 }
 
@@ -1137,6 +1202,22 @@ static int ieee80211_update_mesh_config(struct wiphy *wiphy,
                 conf->dot11MeshHWMPRootMode = nconf->dot11MeshHWMPRootMode;
                 ieee80211_mesh_root_setup(ifmsh);
         }
+        if (_chg_mesh_attr(NL80211_MESHCONF_GATE_ANNOUNCEMENTS, mask)) {
+                /* our current gate announcement implementation rides on root
+                 * announcements, so require this ifmsh to also be a root node
+                 * */
+                if (nconf->dot11MeshGateAnnouncementProtocol &&
+                    !conf->dot11MeshHWMPRootMode) {
+                        conf->dot11MeshHWMPRootMode = 1;
+                        ieee80211_mesh_root_setup(ifmsh);
+                }
+                conf->dot11MeshGateAnnouncementProtocol =
+                        nconf->dot11MeshGateAnnouncementProtocol;
+        }
+        if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_RANN_INTERVAL, mask)) {
+                conf->dot11MeshHWMPRannInterval =
+                        nconf->dot11MeshHWMPRannInterval;
+        }
         return 0;
 }
 
@@ -1235,9 +1316,11 @@ static int ieee80211_change_bss(struct wiphy *wiphy,
 }
 
 static int ieee80211_set_txq_params(struct wiphy *wiphy,
+                                    struct net_device *dev,
                                     struct ieee80211_txq_params *params)
 {
         struct ieee80211_local *local = wiphy_priv(wiphy);
+        struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
         struct ieee80211_tx_queue_params p;
 
         if (!local->ops->conf_tx)
@@ -1258,8 +1341,8 @@ static int ieee80211_set_txq_params(struct wiphy *wiphy,
         if (params->queue >= local->hw.queues)
                 return -EINVAL;
 
-        local->tx_conf[params->queue] = p;
-        if (drv_conf_tx(local, params->queue, &p)) {
+        sdata->tx_conf[params->queue] = p;
+        if (drv_conf_tx(local, sdata, params->queue, &p)) {
                 wiphy_debug(local->hw.wiphy,
                             "failed to set TX queue parameters for queue %d\n",
                             params->queue);
@@ -1821,7 +1904,7 @@ ieee80211_offchan_tx_done(struct ieee80211_work *wk, struct sk_buff *skb)
          * so in that case userspace will have to deal with it.
          */
 
-        if (wk->offchan_tx.wait && wk->offchan_tx.frame)
+        if (wk->offchan_tx.wait && !wk->offchan_tx.status)
                 cfg80211_mgmt_tx_status(wk->sdata->dev,
                                         (unsigned long) wk->offchan_tx.frame,
                                         wk->ie, wk->ie_len, false, GFP_KERNEL);
@@ -1833,7 +1916,8 @@ static int ieee80211_mgmt_tx(struct wiphy *wiphy, struct net_device *dev,
                              struct ieee80211_channel *chan, bool offchan,
                              enum nl80211_channel_type channel_type,
                              bool channel_type_valid, unsigned int wait,
-                             const u8 *buf, size_t len, u64 *cookie)
+                             const u8 *buf, size_t len, bool no_cck,
+                             u64 *cookie)
 {
         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
         struct ieee80211_local *local = sdata->local;
@@ -1860,6 +1944,9 @@ static int ieee80211_mgmt_tx(struct wiphy *wiphy, struct net_device *dev,
                 flags |= IEEE80211_TX_CTL_TX_OFFCHAN;
         }
 
+        if (no_cck)
+                flags |= IEEE80211_TX_CTL_NO_CCK_RATE;
+
         if (is_offchan && !offchan)
                 return -EBUSY;
 
@@ -1898,33 +1985,6 @@ static int ieee80211_mgmt_tx(struct wiphy *wiphy, struct net_device *dev,
 
         *cookie = (unsigned long) skb;
 
-        if (is_offchan && local->ops->offchannel_tx) {
-                int ret;
-
-                IEEE80211_SKB_CB(skb)->band = chan->band;
-
-                mutex_lock(&local->mtx);
-
-                if (local->hw_offchan_tx_cookie) {
-                        mutex_unlock(&local->mtx);
-                        return -EBUSY;
-                }
-
-                /* TODO: bitrate control, TX processing? */
-                ret = drv_offchannel_tx(local, skb, chan, channel_type, wait);
-
-                if (ret == 0)
-                        local->hw_offchan_tx_cookie = *cookie;
-                mutex_unlock(&local->mtx);
-
-                /*
-                 * Allow driver to return 1 to indicate it wants to have the
-                 * frame transmitted with a remain_on_channel + regular TX.
-                 */
-                if (ret != 1)
-                        return ret;
-        }
-
         if (is_offchan && local->ops->remain_on_channel) {
                 unsigned int duration;
                 int ret;
@@ -2011,18 +2071,6 @@ static int ieee80211_mgmt_tx_cancel_wait(struct wiphy *wiphy,
 
         mutex_lock(&local->mtx);
 
-        if (local->ops->offchannel_tx_cancel_wait &&
-            local->hw_offchan_tx_cookie == cookie) {
-                ret = drv_offchannel_tx_cancel_wait(local);
-
-                if (!ret)
-                        local->hw_offchan_tx_cookie = 0;
-
-                mutex_unlock(&local->mtx);
-
-                return ret;
-        }
-
         if (local->ops->cancel_remain_on_channel) {
                 cookie ^= 2;
                 ret = ieee80211_cancel_remain_on_channel_hw(local, cookie);
@@ -2123,6 +2171,323 @@ static int ieee80211_set_rekey_data(struct wiphy *wiphy,
         return 0;
 }
 
+static void ieee80211_tdls_add_ext_capab(struct sk_buff *skb)
+{
+        u8 *pos = (void *)skb_put(skb, 7);
+
+        *pos++ = WLAN_EID_EXT_CAPABILITY;
+        *pos++ = 5; /* len */
+        *pos++ = 0x0;
+        *pos++ = 0x0;
+        *pos++ = 0x0;
+        *pos++ = 0x0;
+        *pos++ = WLAN_EXT_CAPA5_TDLS_ENABLED;
+}
+
+static u16 ieee80211_get_tdls_sta_capab(struct ieee80211_sub_if_data *sdata)
+{
+        struct ieee80211_local *local = sdata->local;
+        u16 capab;
+
+        capab = 0;
+        if (local->oper_channel->band != IEEE80211_BAND_2GHZ)
+                return capab;
+
+        if (!(local->hw.flags & IEEE80211_HW_2GHZ_SHORT_SLOT_INCAPABLE))
+                capab |= WLAN_CAPABILITY_SHORT_SLOT_TIME;
+        if (!(local->hw.flags & IEEE80211_HW_2GHZ_SHORT_PREAMBLE_INCAPABLE))
+                capab |= WLAN_CAPABILITY_SHORT_PREAMBLE;
+
+        return capab;
+}
+
+static void ieee80211_tdls_add_link_ie(struct sk_buff *skb, u8 *src_addr,
+                                       u8 *peer, u8 *bssid)
+{
+        struct ieee80211_tdls_lnkie *lnkid;
+
+        lnkid = (void *)skb_put(skb, sizeof(struct ieee80211_tdls_lnkie));
+
+        lnkid->ie_type = WLAN_EID_LINK_ID;
+        lnkid->ie_len = sizeof(struct ieee80211_tdls_lnkie) - 2;
+
+        memcpy(lnkid->bssid, bssid, ETH_ALEN);
+        memcpy(lnkid->init_sta, src_addr, ETH_ALEN);
+        memcpy(lnkid->resp_sta, peer, ETH_ALEN);
+}
+
+static int
+ieee80211_prep_tdls_encap_data(struct wiphy *wiphy, struct net_device *dev,
+                               u8 *peer, u8 action_code, u8 dialog_token,
+                               u16 status_code, struct sk_buff *skb)
+{
+        struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+        struct ieee80211_tdls_data *tf;
+
+        tf = (void *)skb_put(skb, offsetof(struct ieee80211_tdls_data, u));
+
+        memcpy(tf->da, peer, ETH_ALEN);
+        memcpy(tf->sa, sdata->vif.addr, ETH_ALEN);
+        tf->ether_type = cpu_to_be16(ETH_P_TDLS);
+        tf->payload_type = WLAN_TDLS_SNAP_RFTYPE;
+
+        switch (action_code) {
+        case WLAN_TDLS_SETUP_REQUEST:
+                tf->category = WLAN_CATEGORY_TDLS;
+                tf->action_code = WLAN_TDLS_SETUP_REQUEST;
+
+                skb_put(skb, sizeof(tf->u.setup_req));
+                tf->u.setup_req.dialog_token = dialog_token;
+                tf->u.setup_req.capability =
+                        cpu_to_le16(ieee80211_get_tdls_sta_capab(sdata));
+
+                ieee80211_add_srates_ie(&sdata->vif, skb);
+                ieee80211_add_ext_srates_ie(&sdata->vif, skb);
+                ieee80211_tdls_add_ext_capab(skb);
+                break;
+        case WLAN_TDLS_SETUP_RESPONSE:
+                tf->category = WLAN_CATEGORY_TDLS;
+                tf->action_code = WLAN_TDLS_SETUP_RESPONSE;
+
+                skb_put(skb, sizeof(tf->u.setup_resp));
+                tf->u.setup_resp.status_code = cpu_to_le16(status_code);
+                tf->u.setup_resp.dialog_token = dialog_token;
+                tf->u.setup_resp.capability =
+                        cpu_to_le16(ieee80211_get_tdls_sta_capab(sdata));
+
+                ieee80211_add_srates_ie(&sdata->vif, skb);
+                ieee80211_add_ext_srates_ie(&sdata->vif, skb);
+                ieee80211_tdls_add_ext_capab(skb);
+                break;
+        case WLAN_TDLS_SETUP_CONFIRM:
+                tf->category = WLAN_CATEGORY_TDLS;
+                tf->action_code = WLAN_TDLS_SETUP_CONFIRM;
+
+                skb_put(skb, sizeof(tf->u.setup_cfm));
+                tf->u.setup_cfm.status_code = cpu_to_le16(status_code);
+                tf->u.setup_cfm.dialog_token = dialog_token;
+                break;
+        case WLAN_TDLS_TEARDOWN:
+                tf->category = WLAN_CATEGORY_TDLS;
+                tf->action_code = WLAN_TDLS_TEARDOWN;
+
+                skb_put(skb, sizeof(tf->u.teardown));
+                tf->u.teardown.reason_code = cpu_to_le16(status_code);
+                break;
+        case WLAN_TDLS_DISCOVERY_REQUEST:
+                tf->category = WLAN_CATEGORY_TDLS;
+                tf->action_code = WLAN_TDLS_DISCOVERY_REQUEST;
+
+                skb_put(skb, sizeof(tf->u.discover_req));
+                tf->u.discover_req.dialog_token = dialog_token;
+                break;
+        default:
+                return -EINVAL;
+        }
+
+        return 0;
+}
+
+static int
+ieee80211_prep_tdls_direct(struct wiphy *wiphy, struct net_device *dev,
+                           u8 *peer, u8 action_code, u8 dialog_token,
+                           u16 status_code, struct sk_buff *skb)
+{
+        struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+        struct ieee80211_mgmt *mgmt;
+
+        mgmt = (void *)skb_put(skb, 24);
+        memset(mgmt, 0, 24);
+        memcpy(mgmt->da, peer, ETH_ALEN);
+        memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN);
+        memcpy(mgmt->bssid, sdata->u.mgd.bssid, ETH_ALEN);
+
+        mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT |
+                                          IEEE80211_STYPE_ACTION);
+
+        switch (action_code) {
+        case WLAN_PUB_ACTION_TDLS_DISCOVER_RES:
+                skb_put(skb, 1 + sizeof(mgmt->u.action.u.tdls_discover_resp));
+                mgmt->u.action.category = WLAN_CATEGORY_PUBLIC;
+                mgmt->u.action.u.tdls_discover_resp.action_code =
+                        WLAN_PUB_ACTION_TDLS_DISCOVER_RES;
+                mgmt->u.action.u.tdls_discover_resp.dialog_token =
+                        dialog_token;
+                mgmt->u.action.u.tdls_discover_resp.capability =
+                        cpu_to_le16(ieee80211_get_tdls_sta_capab(sdata));
+
+                ieee80211_add_srates_ie(&sdata->vif, skb);
+                ieee80211_add_ext_srates_ie(&sdata->vif, skb);
+                ieee80211_tdls_add_ext_capab(skb);
+                break;
+        default:
+                return -EINVAL;
+        }
+
+        return 0;
+}
+
+static int ieee80211_tdls_mgmt(struct wiphy *wiphy, struct net_device *dev,
+                               u8 *peer, u8 action_code, u8 dialog_token,
+                               u16 status_code, const u8 *extra_ies,
+                               size_t extra_ies_len)
+{
+        struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+        struct ieee80211_local *local = sdata->local;
+        struct ieee80211_tx_info *info;
+        struct sk_buff *skb = NULL;
+        bool send_direct;
+        int ret;
+
+        if (!(wiphy->flags & WIPHY_FLAG_SUPPORTS_TDLS))
+                return -ENOTSUPP;
+
+        /* make sure we are in managed mode, and associated */
+        if (sdata->vif.type != NL80211_IFTYPE_STATION ||
+            !sdata->u.mgd.associated)
+                return -EINVAL;
+
+#ifdef CONFIG_MAC80211_VERBOSE_TDLS_DEBUG
+        printk(KERN_DEBUG "TDLS mgmt action %d peer %pM\n", action_code, peer);
+#endif
+
+        skb = dev_alloc_skb(local->hw.extra_tx_headroom +
+                            max(sizeof(struct ieee80211_mgmt),
+                                sizeof(struct ieee80211_tdls_data)) +
+                            50 + /* supported rates */
+                            7 + /* ext capab */
+                            extra_ies_len +
+                            sizeof(struct ieee80211_tdls_lnkie));
+        if (!skb)
+                return -ENOMEM;
+
+        info = IEEE80211_SKB_CB(skb);
+        skb_reserve(skb, local->hw.extra_tx_headroom);
+
+        switch (action_code) {
+        case WLAN_TDLS_SETUP_REQUEST:
+        case WLAN_TDLS_SETUP_RESPONSE:
+        case WLAN_TDLS_SETUP_CONFIRM:
+        case WLAN_TDLS_TEARDOWN:
+        case WLAN_TDLS_DISCOVERY_REQUEST:
+                ret = ieee80211_prep_tdls_encap_data(wiphy, dev, peer,
+                                                     action_code, dialog_token,
+                                                     status_code, skb);
+                send_direct = false;
+                break;
+        case WLAN_PUB_ACTION_TDLS_DISCOVER_RES:
+                ret = ieee80211_prep_tdls_direct(wiphy, dev, peer, action_code,
+                                                 dialog_token, status_code,
+                                                 skb);
+                send_direct = true;
+                break;
+        default:
+                ret = -ENOTSUPP;
+                break;
+        }
+
+        if (ret < 0)
+                goto fail;
+
+        if (extra_ies_len)
+                memcpy(skb_put(skb, extra_ies_len), extra_ies, extra_ies_len);
+
+        /* the TDLS link IE is always added last */
+        switch (action_code) {
+        case WLAN_TDLS_SETUP_REQUEST:
+        case WLAN_TDLS_SETUP_CONFIRM:
+        case WLAN_TDLS_TEARDOWN:
+        case WLAN_TDLS_DISCOVERY_REQUEST:
+                /* we are the initiator */
+                ieee80211_tdls_add_link_ie(skb, sdata->vif.addr, peer,
+                                           sdata->u.mgd.bssid);
+                break;
+        case WLAN_TDLS_SETUP_RESPONSE:
+        case WLAN_PUB_ACTION_TDLS_DISCOVER_RES:
+                /* we are the responder */
+                ieee80211_tdls_add_link_ie(skb, peer, sdata->vif.addr,
+                                           sdata->u.mgd.bssid);
+                break;
+        default:
+                ret = -ENOTSUPP;
+                goto fail;
+        }
+
+        if (send_direct) {
+                ieee80211_tx_skb(sdata, skb);
+                return 0;
+        }
+
+        /*
+         * According to 802.11z: Setup req/resp are sent in AC_BK, otherwise
+         * we should default to AC_VI.
+         */
+        switch (action_code) {
+        case WLAN_TDLS_SETUP_REQUEST:
+        case WLAN_TDLS_SETUP_RESPONSE:
+                skb_set_queue_mapping(skb, IEEE80211_AC_BK);
+                skb->priority = 2;
+                break;
+        default:
+                skb_set_queue_mapping(skb, IEEE80211_AC_VI);
+                skb->priority = 5;
+                break;
+        }
+
+        /* disable bottom halves when entering the Tx path */
+        local_bh_disable();
+        ret = ieee80211_subif_start_xmit(skb, dev);
+        local_bh_enable();
+
+        return ret;
+
+fail:
+        dev_kfree_skb(skb);
+        return ret;
+}
+
+static int ieee80211_tdls_oper(struct wiphy *wiphy, struct net_device *dev,
+                               u8 *peer, enum nl80211_tdls_operation oper)
+{
+        struct sta_info *sta;
+        struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+
+        if (!(wiphy->flags & WIPHY_FLAG_SUPPORTS_TDLS))
+                return -ENOTSUPP;
+
+        if (sdata->vif.type != NL80211_IFTYPE_STATION)
+                return -EINVAL;
+
+#ifdef CONFIG_MAC80211_VERBOSE_TDLS_DEBUG
+        printk(KERN_DEBUG "TDLS oper %d peer %pM\n", oper, peer);
+#endif
+
+        switch (oper) {
+        case NL80211_TDLS_ENABLE_LINK:
+                rcu_read_lock();
+                sta = sta_info_get(sdata, peer);
+                if (!sta) {
+                        rcu_read_unlock();
+                        return -ENOLINK;
+                }
+
+                set_sta_flag(sta, WLAN_STA_TDLS_PEER_AUTH);
+                rcu_read_unlock();
+                break;
+        case NL80211_TDLS_DISABLE_LINK:
+                return sta_info_destroy_addr(sdata, peer);
+        case NL80211_TDLS_TEARDOWN:
+        case NL80211_TDLS_SETUP:
+        case NL80211_TDLS_DISCOVERY_REQ:
+                /* We don't support in-driver setup/teardown/discovery */
+                return -ENOTSUPP;
+        default:
+                return -ENOTSUPP;
+        }
+
+        return 0;
+}
+
 struct cfg80211_ops mac80211_config_ops = {
         .add_virtual_intf = ieee80211_add_iface,
         .del_virtual_intf = ieee80211_del_iface,
@@ -2186,4 +2551,6 @@ struct cfg80211_ops mac80211_config_ops = {
         .set_ringparam = ieee80211_set_ringparam,
         .get_ringparam = ieee80211_get_ringparam,
         .set_rekey_data = ieee80211_set_rekey_data,
+        .tdls_oper = ieee80211_tdls_oper,
+        .tdls_mgmt = ieee80211_tdls_mgmt,
 };
diff --git a/net/mac80211/debugfs.c b/net/mac80211/debugfs.c
index 186e02f7cc32..883996b2f99f 100644
--- a/net/mac80211/debugfs.c
+++ b/net/mac80211/debugfs.c
@@ -78,57 +78,6 @@ DEBUGFS_READONLY_FILE(wep_iv, "%#08x",
 DEBUGFS_READONLY_FILE(rate_ctrl_alg, "%s",
         local->rate_ctrl ? local->rate_ctrl->ops->name : "hw/driver");
 
-static ssize_t tsf_read(struct file *file, char __user *user_buf,
-                             size_t count, loff_t *ppos)
-{
-        struct ieee80211_local *local = file->private_data;
-        u64 tsf;
-
-        tsf = drv_get_tsf(local);
-
-        return mac80211_format_buffer(user_buf, count, ppos, "0x%016llx\n",
-                                      (unsigned long long) tsf);
-}
-
-static ssize_t tsf_write(struct file *file,
-                         const char __user *user_buf,
-                         size_t count, loff_t *ppos)
-{
-        struct ieee80211_local *local = file->private_data;
-        unsigned long long tsf;
-        char buf[100];
-        size_t len;
-
-        len = min(count, sizeof(buf) - 1);
-        if (copy_from_user(buf, user_buf, len))
-                return -EFAULT;
-        buf[len] = '\0';
-
-        if (strncmp(buf, "reset", 5) == 0) {
-                if (local->ops->reset_tsf) {
-                        drv_reset_tsf(local);
-                        wiphy_info(local->hw.wiphy, "debugfs reset TSF\n");
-                }
-        } else {
-                tsf = simple_strtoul(buf, NULL, 0);
-                if (local->ops->set_tsf) {
-                        drv_set_tsf(local, tsf);
-                        wiphy_info(local->hw.wiphy,
-                                   "debugfs set TSF to %#018llx\n", tsf);
-
-                }
-        }
-
-        return count;
-}
-
-static const struct file_operations tsf_ops = {
-        .read = tsf_read,
-        .write = tsf_write,
-        .open = mac80211_open_file_generic,
-        .llseek = default_llseek,
-};
-
 static ssize_t reset_write(struct file *file, const char __user *user_buf,
                            size_t count, loff_t *ppos)
 {
@@ -195,20 +144,12 @@ static ssize_t uapsd_queues_write(struct file *file,
                                   size_t count, loff_t *ppos)
 {
         struct ieee80211_local *local = file->private_data;
-        unsigned long val;
-        char buf[10];
-        size_t len;
+        u8 val;
         int ret;
 
-        len = min(count, sizeof(buf) - 1);
-        if (copy_from_user(buf, user_buf, len))
-                return -EFAULT;
-        buf[len] = '\0';
-
-        ret = strict_strtoul(buf, 0, &val);
-
+        ret = kstrtou8_from_user(user_buf, count, 0, &val);
         if (ret)
-                return -EINVAL;
+                return ret;
 
         if (val & ~IEEE80211_WMM_IE_STA_QOSINFO_AC_MASK)
                 return -ERANGE;
@@ -305,6 +246,9 @@ static ssize_t hwflags_read(struct file *file, char __user *user_buf,
         char *buf = kzalloc(mxln, GFP_KERNEL);
         int sf = 0; /* how many written so far */
 
+        if (!buf)
+                return 0;
+
         sf += snprintf(buf, mxln - sf, "0x%x\n", local->hw.flags);
         if (local->hw.flags & IEEE80211_HW_HAS_RATE_CONTROL)
                 sf += snprintf(buf + sf, mxln - sf, "HAS_RATE_CONTROL\n");
@@ -355,6 +299,8 @@ static ssize_t hwflags_read(struct file *file, char __user *user_buf,
                 sf += snprintf(buf + sf, mxln - sf, "SUPPORTS_PER_STA_GTK\n");
         if (local->hw.flags & IEEE80211_HW_AP_LINK_PS)
                 sf += snprintf(buf + sf, mxln - sf, "AP_LINK_PS\n");
+        if (local->hw.flags & IEEE80211_HW_TX_AMPDU_SETUP_IN_HW)
+                sf += snprintf(buf + sf, mxln - sf, "TX_AMPDU_SETUP_IN_HW\n");
 
         rv = simple_read_from_buffer(user_buf, count, ppos, buf, strlen(buf));
         kfree(buf);
@@ -450,7 +396,6 @@ void debugfs_hw_add(struct ieee80211_local *local)
         DEBUGFS_ADD(frequency);
         DEBUGFS_ADD(total_ps_buffered);
         DEBUGFS_ADD(wep_iv);
-        DEBUGFS_ADD(tsf);
         DEBUGFS_ADD(queues);
         DEBUGFS_ADD_MODE(reset, 0200);
         DEBUGFS_ADD(noack);
diff --git a/net/mac80211/debugfs_netdev.c b/net/mac80211/debugfs_netdev.c
index 9ea7c0d0103f..9352819a986b 100644
--- a/net/mac80211/debugfs_netdev.c
+++ b/net/mac80211/debugfs_netdev.c
@@ -21,6 +21,7 @@
 #include "rate.h"
 #include "debugfs.h"
 #include "debugfs_netdev.h"
+#include "driver-ops.h"
 
 static ssize_t ieee80211_if_read(
         struct ieee80211_sub_if_data *sdata,
@@ -331,6 +332,46 @@ static ssize_t ieee80211_if_fmt_num_buffered_multicast(
 }
 __IEEE80211_IF_FILE(num_buffered_multicast, NULL);
 
+/* IBSS attributes */
+static ssize_t ieee80211_if_fmt_tsf(
+        const struct ieee80211_sub_if_data *sdata, char *buf, int buflen)
+{
+        struct ieee80211_local *local = sdata->local;
+        u64 tsf;
+
+        tsf = drv_get_tsf(local, (struct ieee80211_sub_if_data *)sdata);
+
+        return scnprintf(buf, buflen, "0x%016llx\n", (unsigned long long) tsf);
+}
+
+static ssize_t ieee80211_if_parse_tsf(
+        struct ieee80211_sub_if_data *sdata, const char *buf, int buflen)
+{
+        struct ieee80211_local *local = sdata->local;
+        unsigned long long tsf;
+        int ret;
+
+        if (strncmp(buf, "reset", 5) == 0) {
+                if (local->ops->reset_tsf) {
+                        drv_reset_tsf(local, sdata);
+                        wiphy_info(local->hw.wiphy, "debugfs reset TSF\n");
+                }
+        } else {
+                ret = kstrtoull(buf, 10, &tsf);
+                if (ret < 0)
+                        return -EINVAL;
+                if (local->ops->set_tsf) {
+                        drv_set_tsf(local, sdata, tsf);
+                        wiphy_info(local->hw.wiphy,
+                                   "debugfs set TSF to %#018llx\n", tsf);
+                }
+        }
+
+        return buflen;
+}
+__IEEE80211_IF_FILE_W(tsf);
+
+
 /* WDS attributes */
 IEEE80211_IF_FILE(peer, u.wds.remote_addr, MAC);
 
@@ -340,6 +381,8 @@ IEEE80211_IF_FILE(fwded_mcast, u.mesh.mshstats.fwded_mcast, DEC);
 IEEE80211_IF_FILE(fwded_unicast, u.mesh.mshstats.fwded_unicast, DEC);
 IEEE80211_IF_FILE(fwded_frames, u.mesh.mshstats.fwded_frames, DEC);
 IEEE80211_IF_FILE(dropped_frames_ttl, u.mesh.mshstats.dropped_frames_ttl, DEC);
+IEEE80211_IF_FILE(dropped_frames_congestion,
+                u.mesh.mshstats.dropped_frames_congestion, DEC);
 IEEE80211_IF_FILE(dropped_frames_no_route,
                 u.mesh.mshstats.dropped_frames_no_route, DEC);
 IEEE80211_IF_FILE(estab_plinks, u.mesh.mshstats.estab_plinks, ATOMIC);
@@ -372,6 +415,10 @@ IEEE80211_IF_FILE(min_discovery_timeout,
                 u.mesh.mshcfg.min_discovery_timeout, DEC);
 IEEE80211_IF_FILE(dot11MeshHWMPRootMode,
                 u.mesh.mshcfg.dot11MeshHWMPRootMode, DEC);
+IEEE80211_IF_FILE(dot11MeshGateAnnouncementProtocol,
+                u.mesh.mshcfg.dot11MeshGateAnnouncementProtocol, DEC);
+IEEE80211_IF_FILE(dot11MeshHWMPRannInterval,
+                u.mesh.mshcfg.dot11MeshHWMPRannInterval, DEC);
 #endif
 
 
@@ -415,6 +462,11 @@ static void add_ap_files(struct ieee80211_sub_if_data *sdata)
         DEBUGFS_ADD_MODE(tkip_mic_test, 0200);
 }
 
+static void add_ibss_files(struct ieee80211_sub_if_data *sdata)
+{
+        DEBUGFS_ADD_MODE(tsf, 0600);
+}
+
 static void add_wds_files(struct ieee80211_sub_if_data *sdata)
 {
         DEBUGFS_ADD(drop_unencrypted);
@@ -459,6 +511,7 @@ static void add_mesh_stats(struct ieee80211_sub_if_data *sdata)
         MESHSTATS_ADD(fwded_frames);
         MESHSTATS_ADD(dropped_frames_ttl);
         MESHSTATS_ADD(dropped_frames_no_route);
+        MESHSTATS_ADD(dropped_frames_congestion);
         MESHSTATS_ADD(estab_plinks);
 #undef MESHSTATS_ADD
 }
@@ -485,7 +538,9 @@ static void add_mesh_config(struct ieee80211_sub_if_data *sdata)
         MESHPARAMS_ADD(dot11MeshHWMPmaxPREQretries);
         MESHPARAMS_ADD(path_refresh_time);
         MESHPARAMS_ADD(min_discovery_timeout);
-
+        MESHPARAMS_ADD(dot11MeshHWMPRootMode);
+        MESHPARAMS_ADD(dot11MeshHWMPRannInterval);
+        MESHPARAMS_ADD(dot11MeshGateAnnouncementProtocol);
 #undef MESHPARAMS_ADD
 }
 #endif
@@ -506,7 +561,7 @@ static void add_files(struct ieee80211_sub_if_data *sdata)
                 add_sta_files(sdata);
                 break;
         case NL80211_IFTYPE_ADHOC:
-                /* XXX */
+                add_ibss_files(sdata);
                 break;
         case NL80211_IFTYPE_AP:
                 add_ap_files(sdata);
diff --git a/net/mac80211/debugfs_sta.c b/net/mac80211/debugfs_sta.c
index a01d2137fddc..c5f341798c16 100644
--- a/net/mac80211/debugfs_sta.c
+++ b/net/mac80211/debugfs_sta.c
@@ -56,19 +56,22 @@ STA_FILE(last_signal, last_signal, D);
 static ssize_t sta_flags_read(struct file *file, char __user *userbuf,
                               size_t count, loff_t *ppos)
 {
-        char buf[100];
+        char buf[121];
         struct sta_info *sta = file->private_data;
-        u32 staflags = get_sta_flags(sta);
-        int res = scnprintf(buf, sizeof(buf), "%s%s%s%s%s%s%s%s%s",
-                staflags & WLAN_STA_AUTH ? "AUTH\n" : "",
-                staflags & WLAN_STA_ASSOC ? "ASSOC\n" : "",
-                staflags & WLAN_STA_PS_STA ? "PS (sta)\n" : "",
-                staflags & WLAN_STA_PS_DRIVER ? "PS (driver)\n" : "",
-                staflags & WLAN_STA_AUTHORIZED ? "AUTHORIZED\n" : "",
-                staflags & WLAN_STA_SHORT_PREAMBLE ? "SHORT PREAMBLE\n" : "",
-                staflags & WLAN_STA_WME ? "WME\n" : "",
-                staflags & WLAN_STA_WDS ? "WDS\n" : "",
-                staflags & WLAN_STA_MFP ? "MFP\n" : "");
+
+#define TEST(flg) \
+        test_sta_flag(sta, WLAN_STA_##flg) ? #flg "\n" : ""
+
+        int res = scnprintf(buf, sizeof(buf),
+                            "%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s",
+                            TEST(AUTH), TEST(ASSOC), TEST(PS_STA),
+                            TEST(PS_DRIVER), TEST(AUTHORIZED),
+                            TEST(SHORT_PREAMBLE), TEST(ASSOC_AP),
+                            TEST(WME), TEST(WDS), TEST(CLEAR_PS_FILT),
+                            TEST(MFP), TEST(BLOCK_BA), TEST(PSPOLL),
+                            TEST(UAPSD), TEST(SP), TEST(TDLS_PEER),
+                            TEST(TDLS_PEER_AUTH));
+#undef TEST
         return simple_read_from_buffer(userbuf, count, ppos, buf, res);
 }
 STA_OPS(flags);
@@ -78,8 +81,14 @@ static ssize_t sta_num_ps_buf_frames_read(struct file *file,
                                           size_t count, loff_t *ppos)
 {
         struct sta_info *sta = file->private_data;
-        return mac80211_format_buffer(userbuf, count, ppos, "%u\n",
-                                      skb_queue_len(&sta->ps_tx_buf));
+        char buf[17*IEEE80211_NUM_ACS], *p = buf;
+        int ac;
+
+        for (ac = 0; ac < IEEE80211_NUM_ACS; ac++)
+                p += scnprintf(p, sizeof(buf)+buf-p, "AC%d: %d\n", ac,
+                               skb_queue_len(&sta->ps_tx_buf[ac]) +
+                               skb_queue_len(&sta->tx_filtered[ac]));
+        return simple_read_from_buffer(userbuf, count, ppos, buf, p - buf);
 }
 STA_OPS(num_ps_buf_frames);
 
diff --git a/net/mac80211/driver-ops.h b/net/mac80211/driver-ops.h
index 1425380983f7..5f165d7eb2db 100644
--- a/net/mac80211/driver-ops.h
+++ b/net/mac80211/driver-ops.h
@@ -413,50 +413,56 @@ static inline void drv_sta_remove(struct ieee80211_local *local,
         trace_drv_return_void(local);
 }
 
-static inline int drv_conf_tx(struct ieee80211_local *local, u16 queue,
+static inline int drv_conf_tx(struct ieee80211_local *local,
+                              struct ieee80211_sub_if_data *sdata, u16 queue,
                               const struct ieee80211_tx_queue_params *params)
 {
         int ret = -EOPNOTSUPP;
 
         might_sleep();
 
-        trace_drv_conf_tx(local, queue, params);
+        trace_drv_conf_tx(local, sdata, queue, params);
         if (local->ops->conf_tx)
-                ret = local->ops->conf_tx(&local->hw, queue, params);
+                ret = local->ops->conf_tx(&local->hw, &sdata->vif,
+                                          queue, params);
         trace_drv_return_int(local, ret);
         return ret;
 }
 
-static inline u64 drv_get_tsf(struct ieee80211_local *local)
+static inline u64 drv_get_tsf(struct ieee80211_local *local,
+                              struct ieee80211_sub_if_data *sdata)
 {
         u64 ret = -1ULL;
 
         might_sleep();
 
-        trace_drv_get_tsf(local);
+        trace_drv_get_tsf(local, sdata);
         if (local->ops->get_tsf)
-                ret = local->ops->get_tsf(&local->hw);
+                ret = local->ops->get_tsf(&local->hw, &sdata->vif);
         trace_drv_return_u64(local, ret);
         return ret;
 }
 
-static inline void drv_set_tsf(struct ieee80211_local *local, u64 tsf)
+static inline void drv_set_tsf(struct ieee80211_local *local,
+                               struct ieee80211_sub_if_data *sdata,
+                               u64 tsf)
 {
         might_sleep();
 
-        trace_drv_set_tsf(local, tsf);
+        trace_drv_set_tsf(local, sdata, tsf);
         if (local->ops->set_tsf)
-                local->ops->set_tsf(&local->hw, tsf);
+                local->ops->set_tsf(&local->hw, &sdata->vif, tsf);
         trace_drv_return_void(local);
 }
 
-static inline void drv_reset_tsf(struct ieee80211_local *local)
+static inline void drv_reset_tsf(struct ieee80211_local *local,
+                                 struct ieee80211_sub_if_data *sdata)
 {
         might_sleep();
 
-        trace_drv_reset_tsf(local);
+        trace_drv_reset_tsf(local, sdata);
         if (local->ops->reset_tsf)
-                local->ops->reset_tsf(&local->hw);
+                local->ops->reset_tsf(&local->hw, &sdata->vif);
         trace_drv_return_void(local);
 }
 
@@ -590,37 +596,6 @@ static inline int drv_cancel_remain_on_channel(struct ieee80211_local *local)
         return ret;
 }
 
-static inline int drv_offchannel_tx(struct ieee80211_local *local,
-                                    struct sk_buff *skb,
-                                    struct ieee80211_channel *chan,
-                                    enum nl80211_channel_type channel_type,
-                                    unsigned int wait)
-{
-        int ret;
-
-        might_sleep();
-
-        trace_drv_offchannel_tx(local, skb, chan, channel_type, wait);
-        ret = local->ops->offchannel_tx(&local->hw, skb, chan,
-                                        channel_type, wait);
-        trace_drv_return_int(local, ret);
-
-        return ret;
-}
-
-static inline int drv_offchannel_tx_cancel_wait(struct ieee80211_local *local)
-{
-        int ret;
-
-        might_sleep();
-
-        trace_drv_offchannel_tx_cancel_wait(local);
-        ret = local->ops->offchannel_tx_cancel_wait(&local->hw);
-        trace_drv_return_int(local, ret);
-
-        return ret;
-}
-
 static inline int drv_set_ringparam(struct ieee80211_local *local,
                                     u32 tx, u32 rx)
 {
@@ -696,4 +671,34 @@ static inline void drv_rssi_callback(struct ieee80211_local *local,
                 local->ops->rssi_callback(&local->hw, event);
         trace_drv_return_void(local);
 }
+
+static inline void
+drv_release_buffered_frames(struct ieee80211_local *local,
+                            struct sta_info *sta, u16 tids, int num_frames,
+                            enum ieee80211_frame_release_type reason,
+                            bool more_data)
+{
+        trace_drv_release_buffered_frames(local, &sta->sta, tids, num_frames,
+                                          reason, more_data);
+        if (local->ops->release_buffered_frames)
+                local->ops->release_buffered_frames(&local->hw, &sta->sta, tids,
+                                                    num_frames, reason,
+                                                    more_data);
+        trace_drv_return_void(local);
+}
+
+static inline void
+drv_allow_buffered_frames(struct ieee80211_local *local,
+                          struct sta_info *sta, u16 tids, int num_frames,
+                          enum ieee80211_frame_release_type reason,
+                          bool more_data)
+{
+        trace_drv_allow_buffered_frames(local, &sta->sta, tids, num_frames,
+                                        reason, more_data);
+        if (local->ops->allow_buffered_frames)
+                local->ops->allow_buffered_frames(&local->hw, &sta->sta,
+                                                  tids, num_frames, reason,
+                                                  more_data);
+        trace_drv_return_void(local);
+}
 #endif /* __MAC80211_DRIVER_OPS */
diff --git a/net/mac80211/driver-trace.h b/net/mac80211/driver-trace.h
index f47b00dc7afd..2af4fca55337 100644
--- a/net/mac80211/driver-trace.h
+++ b/net/mac80211/driver-trace.h
@@ -697,64 +697,76 @@ TRACE_EVENT(drv_sta_remove,
 );
 
 TRACE_EVENT(drv_conf_tx,
-        TP_PROTO(struct ieee80211_local *local, u16 queue,
+        TP_PROTO(struct ieee80211_local *local,
+                 struct ieee80211_sub_if_data *sdata,
+                 u16 queue,
                  const struct ieee80211_tx_queue_params *params),
 
-        TP_ARGS(local, queue, params),
+        TP_ARGS(local, sdata, queue, params),
 
         TP_STRUCT__entry(
                 LOCAL_ENTRY
+                VIF_ENTRY
                 __field(u16, queue)
                 __field(u16, txop)
                 __field(u16, cw_min)
                 __field(u16, cw_max)
                 __field(u8, aifs)
+                __field(bool, uapsd)
         ),
 
         TP_fast_assign(
                 LOCAL_ASSIGN;
+                VIF_ASSIGN;
                 __entry->queue = queue;
                 __entry->txop = params->txop;
                 __entry->cw_max = params->cw_max;
                 __entry->cw_min = params->cw_min;
                 __entry->aifs = params->aifs;
+                __entry->uapsd = params->uapsd;
         ),
 
         TP_printk(
-                LOCAL_PR_FMT " queue:%d",
-                LOCAL_PR_ARG, __entry->queue
+                LOCAL_PR_FMT  VIF_PR_FMT  " queue:%d",
+                LOCAL_PR_ARG, VIF_PR_ARG, __entry->queue
         )
 );
 
-DEFINE_EVENT(local_only_evt, drv_get_tsf,
-        TP_PROTO(struct ieee80211_local *local),
-        TP_ARGS(local)
+DEFINE_EVENT(local_sdata_evt, drv_get_tsf,
+        TP_PROTO(struct ieee80211_local *local,
+                 struct ieee80211_sub_if_data *sdata),
+        TP_ARGS(local, sdata)
 );
 
 TRACE_EVENT(drv_set_tsf,
-        TP_PROTO(struct ieee80211_local *local, u64 tsf),
+        TP_PROTO(struct ieee80211_local *local,
+                 struct ieee80211_sub_if_data *sdata,
+                 u64 tsf),
 
-        TP_ARGS(local, tsf),
+        TP_ARGS(local, sdata, tsf),
 
         TP_STRUCT__entry(
                 LOCAL_ENTRY
+                VIF_ENTRY
                 __field(u64, tsf)
         ),
 
         TP_fast_assign(
                 LOCAL_ASSIGN;
+                VIF_ASSIGN;
                 __entry->tsf = tsf;
         ),
 
         TP_printk(
-                LOCAL_PR_FMT " tsf:%llu",
-                LOCAL_PR_ARG, (unsigned long long)__entry->tsf
+                LOCAL_PR_FMT  VIF_PR_FMT  " tsf:%llu",
+                LOCAL_PR_ARG, VIF_PR_ARG, (unsigned long long)__entry->tsf
         )
 );
 
-DEFINE_EVENT(local_only_evt, drv_reset_tsf,
-        TP_PROTO(struct ieee80211_local *local),
-        TP_ARGS(local)
+DEFINE_EVENT(local_sdata_evt, drv_reset_tsf,
+        TP_PROTO(struct ieee80211_local *local,
+                 struct ieee80211_sub_if_data *sdata),
+        TP_ARGS(local, sdata)
 );
 
 DEFINE_EVENT(local_only_evt, drv_tx_last_beacon,
@@ -1117,6 +1129,61 @@ TRACE_EVENT(drv_rssi_callback,
         )
 );
 
+DECLARE_EVENT_CLASS(release_evt,
+        TP_PROTO(struct ieee80211_local *local,
+                 struct ieee80211_sta *sta,
+                 u16 tids, int num_frames,
+                 enum ieee80211_frame_release_type reason,
+                 bool more_data),
+
+        TP_ARGS(local, sta, tids, num_frames, reason, more_data),
+
+        TP_STRUCT__entry(
+                LOCAL_ENTRY
+                STA_ENTRY
+                __field(u16, tids)
+                __field(int, num_frames)
+                __field(int, reason)
+                __field(bool, more_data)
+        ),
+
+        TP_fast_assign(
+                LOCAL_ASSIGN;
+                STA_ASSIGN;
+                __entry->tids = tids;
+                __entry->num_frames = num_frames;
+                __entry->reason = reason;
+                __entry->more_data = more_data;
+        ),
+
+        TP_printk(
+                LOCAL_PR_FMT STA_PR_FMT
+                " TIDs:0x%.4x frames:%d reason:%d more:%d",
+                LOCAL_PR_ARG, STA_PR_ARG, __entry->tids, __entry->num_frames,
+                __entry->reason, __entry->more_data
+        )
+);
+
+DEFINE_EVENT(release_evt, drv_release_buffered_frames,
+        TP_PROTO(struct ieee80211_local *local,
+                 struct ieee80211_sta *sta,
+                 u16 tids, int num_frames,
+                 enum ieee80211_frame_release_type reason,
+                 bool more_data),
+
+        TP_ARGS(local, sta, tids, num_frames, reason, more_data)
+);
+
+DEFINE_EVENT(release_evt, drv_allow_buffered_frames,
+        TP_PROTO(struct ieee80211_local *local,
+                 struct ieee80211_sta *sta,
+                 u16 tids, int num_frames,
+                 enum ieee80211_frame_release_type reason,
+                 bool more_data),
+
+        TP_ARGS(local, sta, tids, num_frames, reason, more_data)
+);
+
 /*
  * Tracing for API calls that drivers call.
  */
@@ -1431,6 +1498,28 @@ TRACE_EVENT(api_enable_rssi_reports,
         )
 );
 
+TRACE_EVENT(api_eosp,
+        TP_PROTO(struct ieee80211_local *local,
+                 struct ieee80211_sta *sta),
+
+        TP_ARGS(local, sta),
+
+        TP_STRUCT__entry(
+                LOCAL_ENTRY
+                STA_ENTRY
+        ),
+
+        TP_fast_assign(
+                LOCAL_ASSIGN;
+                STA_ASSIGN;
+        ),
+
+        TP_printk(
+                LOCAL_PR_FMT STA_PR_FMT,
+                LOCAL_PR_ARG, STA_PR_FMT
+        )
+);
+
 /*
  * Tracing for internal functions
  * (which may also be called in response to driver calls)
diff --git a/net/mac80211/ht.c b/net/mac80211/ht.c
index 7cfc286946c0..f0fb737efa86 100644
--- a/net/mac80211/ht.c
+++ b/net/mac80211/ht.c
@@ -14,6 +14,7 @@
  */
 
 #include <linux/ieee80211.h>
+#include <linux/export.h>
 #include <net/mac80211.h>
 #include "ieee80211_i.h"
 #include "rate.h"
@@ -130,7 +131,7 @@ void ieee80211_ba_session_work(struct work_struct *work)
          * down by the code that set the flag, so this
          * need not run.
          */
-        if (test_sta_flags(sta, WLAN_STA_BLOCK_BA))
+        if (test_sta_flag(sta, WLAN_STA_BLOCK_BA))
                 return;
 
         mutex_lock(&sta->ampdu_mlme.mtx);
@@ -186,12 +187,8 @@ void ieee80211_send_delba(struct ieee80211_sub_if_data *sdata,
         u16 params;
 
         skb = dev_alloc_skb(sizeof(*mgmt) + local->hw.extra_tx_headroom);
-
-        if (!skb) {
-                printk(KERN_ERR "%s: failed to allocate buffer "
-                                        "for delba frame\n", sdata->name);
+        if (!skb)
                 return;
-        }
 
         skb_reserve(skb, local->hw.extra_tx_headroom);
         mgmt = (struct ieee80211_mgmt *) skb_put(skb, 24);
diff --git a/net/mac80211/ibss.c b/net/mac80211/ibss.c
index 56c24cabf26d..ede9a8b341ac 100644
--- a/net/mac80211/ibss.c
+++ b/net/mac80211/ibss.c
@@ -81,10 +81,10 @@ static void __ieee80211_sta_join_ibss(struct ieee80211_sub_if_data *sdata,
         lockdep_assert_held(&ifibss->mtx);
 
         /* Reset own TSF to allow time synchronization work. */
-        drv_reset_tsf(local);
+        drv_reset_tsf(local, sdata);
 
         skb = ifibss->skb;
-        rcu_assign_pointer(ifibss->presp, NULL);
+        RCU_INIT_POINTER(ifibss->presp, NULL);
         synchronize_rcu();
         skb->data = skb->head;
         skb->len = 0;
@@ -184,7 +184,7 @@ static void __ieee80211_sta_join_ibss(struct ieee80211_sub_if_data *sdata,
                 *pos++ = 0; /* U-APSD no in use */
         }
 
-        rcu_assign_pointer(ifibss->presp, skb);
+        RCU_INIT_POINTER(ifibss->presp, skb);
 
         sdata->vif.bss_conf.beacon_int = beacon_int;
         sdata->vif.bss_conf.basic_rates = basic_rates;
@@ -314,7 +314,7 @@ static void ieee80211_rx_bss_info(struct ieee80211_sub_if_data *sdata,
                 }
 
                 if (sta && elems->wmm_info)
-                        set_sta_flags(sta, WLAN_STA_WME);
+                        set_sta_flag(sta, WLAN_STA_WME);
 
                 rcu_read_unlock();
         }
@@ -382,7 +382,7 @@ static void ieee80211_rx_bss_info(struct ieee80211_sub_if_data *sdata,
                  * second best option: get current TSF
                  * (will return -1 if not supported)
                  */
-                rx_timestamp = drv_get_tsf(local);
+                rx_timestamp = drv_get_tsf(local, sdata);
         }
 
 #ifdef CONFIG_MAC80211_IBSS_DEBUG
@@ -417,7 +417,7 @@ static void ieee80211_rx_bss_info(struct ieee80211_sub_if_data *sdata,
  * must be callable in atomic context.
  */
 struct sta_info *ieee80211_ibss_add_sta(struct ieee80211_sub_if_data *sdata,
-                                        u8 *bssid,u8 *addr, u32 supp_rates,
+                                        u8 *bssid, u8 *addr, u32 supp_rates,
                                         gfp_t gfp)
 {
         struct ieee80211_if_ibss *ifibss = &sdata->u.ibss;
@@ -452,7 +452,7 @@ struct sta_info *ieee80211_ibss_add_sta(struct ieee80211_sub_if_data *sdata,
                 return NULL;
 
         sta->last_rx = jiffies;
-        set_sta_flags(sta, WLAN_STA_AUTHORIZED);
+        set_sta_flag(sta, WLAN_STA_AUTHORIZED);
 
         /* make sure mandatory rates are always added */
         sta->sta.supp_rates[band] = supp_rates |
@@ -995,7 +995,7 @@ int ieee80211_ibss_leave(struct ieee80211_sub_if_data *sdata)
         kfree(sdata->u.ibss.ie);
         skb = rcu_dereference_protected(sdata->u.ibss.presp,
                                         lockdep_is_held(&sdata->u.ibss.mtx));
-        rcu_assign_pointer(sdata->u.ibss.presp, NULL);
+        RCU_INIT_POINTER(sdata->u.ibss.presp, NULL);
         sdata->vif.bss_conf.ibss_joined = false;
         ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BEACON_ENABLED |
                                                 BSS_CHANGED_IBSS);
diff --git a/net/mac80211/ieee80211_i.h b/net/mac80211/ieee80211_i.h
index 400c09bea639..ea10a51babda 100644
--- a/net/mac80211/ieee80211_i.h
+++ b/net/mac80211/ieee80211_i.h
@@ -136,7 +136,6 @@ typedef unsigned __bitwise__ ieee80211_tx_result;
 #define TX_DROP         ((__force ieee80211_tx_result) 1u)
 #define TX_QUEUED       ((__force ieee80211_tx_result) 2u)
 
-#define IEEE80211_TX_FRAGMENTED         BIT(0)
 #define IEEE80211_TX_UNICAST            BIT(1)
 #define IEEE80211_TX_PS_BUFFERED        BIT(2)
 
@@ -149,7 +148,6 @@ struct ieee80211_tx_data {
 
         struct ieee80211_channel *channel;
 
-        u16 ethertype;
         unsigned int flags;
 };
 
@@ -261,6 +259,7 @@ struct mesh_stats {
         __u32 fwded_frames;             /* Mesh total forwarded frames */
         __u32 dropped_frames_ttl;       /* Not transmitted since mesh_ttl == 0*/
         __u32 dropped_frames_no_route;  /* Not transmitted, no route found */
+        __u32 dropped_frames_congestion;/* Not forwarded due to congestion */
         atomic_t estab_plinks;
 };
 
@@ -345,6 +344,7 @@ struct ieee80211_work {
                 struct {
                         struct sk_buff *frame;
                         u32 wait;
+                        bool status;
                 } offchan_tx;
         };
 
@@ -389,6 +389,7 @@ struct ieee80211_if_managed {
 
         unsigned long timers_running; /* used for quiesce/restart */
         bool powersave; /* powersave requested for this iface */
+        bool broken_ap; /* AP is broken -- turn off powersave */
         enum ieee80211_smps_mode req_smps, /* requested smps mode */
                                  ap_smps, /* smps mode AP thinks we're in */
                                  driver_smps_mode; /* smps mode request */
@@ -514,6 +515,7 @@ struct ieee80211_if_mesh {
         struct mesh_config mshcfg;
         u32 mesh_seqnum;
         bool accepting_plinks;
+        int num_gates;
         const u8 *ie;
         u8 ie_len;
         enum {
@@ -607,6 +609,8 @@ struct ieee80211_sub_if_data {
         __be16 control_port_protocol;
         bool control_port_no_encrypt;
 
+        struct ieee80211_tx_queue_params tx_conf[IEEE80211_MAX_QUEUES];
+
         struct work_struct work;
         struct sk_buff_head skb_queue;
 
@@ -660,6 +664,11 @@ enum sdata_queue_type {
 enum {
         IEEE80211_RX_MSG        = 1,
         IEEE80211_TX_STATUS_MSG = 2,
+        IEEE80211_EOSP_MSG      = 3,
+};
+
+struct skb_eosp_msg_data {
+        u8 sta[ETH_ALEN], iface[ETH_ALEN];
 };
 
 enum queue_stop_reason {
@@ -669,6 +678,7 @@ enum queue_stop_reason {
         IEEE80211_QUEUE_STOP_REASON_AGGREGATION,
         IEEE80211_QUEUE_STOP_REASON_SUSPEND,
         IEEE80211_QUEUE_STOP_REASON_SKB_ADD,
+        IEEE80211_QUEUE_STOP_REASON_CHTYPE_CHANGE,
 };
 
 #ifdef CONFIG_MAC80211_LEDS
@@ -748,7 +758,6 @@ struct ieee80211_local {
         struct workqueue_struct *workqueue;
 
         unsigned long queue_stop_reasons[IEEE80211_MAX_QUEUES];
-        struct ieee80211_tx_queue_params tx_conf[IEEE80211_MAX_QUEUES];
         /* also used to protect ampdu_ac_queue and amdpu_ac_stop_refcnt */
         spinlock_t queue_stop_reason_lock;
 
@@ -1002,7 +1011,6 @@ struct ieee80211_local {
         unsigned int hw_roc_duration;
         u32 hw_roc_cookie;
         bool hw_roc_for_tx;
-        unsigned long hw_offchan_tx_cookie;
 
         /* dummy netdev for use w/ NAPI */
         struct net_device napi_dev;
@@ -1022,69 +1030,6 @@ struct ieee80211_ra_tid {
         u16 tid;
 };
 
-/* Parsed Information Elements */
-struct ieee802_11_elems {
-        u8 *ie_start;
-        size_t total_len;
-
-        /* pointers to IEs */
-        u8 *ssid;
-        u8 *supp_rates;
-        u8 *fh_params;
-        u8 *ds_params;
-        u8 *cf_params;
-        struct ieee80211_tim_ie *tim;
-        u8 *ibss_params;
-        u8 *challenge;
-        u8 *wpa;
-        u8 *rsn;
-        u8 *erp_info;
-        u8 *ext_supp_rates;
-        u8 *wmm_info;
-        u8 *wmm_param;
-        struct ieee80211_ht_cap *ht_cap_elem;
-        struct ieee80211_ht_info *ht_info_elem;
-        struct ieee80211_meshconf_ie *mesh_config;
-        u8 *mesh_id;
-        u8 *peer_link;
-        u8 *preq;
-        u8 *prep;
-        u8 *perr;
-        struct ieee80211_rann_ie *rann;
-        u8 *ch_switch_elem;
-        u8 *country_elem;
-        u8 *pwr_constr_elem;
-        u8 *quiet_elem;         /* first quite element */
-        u8 *timeout_int;
-
-        /* length of them, respectively */
-        u8 ssid_len;
-        u8 supp_rates_len;
-        u8 fh_params_len;
-        u8 ds_params_len;
-        u8 cf_params_len;
-        u8 tim_len;
-        u8 ibss_params_len;
-        u8 challenge_len;
-        u8 wpa_len;
-        u8 rsn_len;
-        u8 erp_info_len;
-        u8 ext_supp_rates_len;
-        u8 wmm_info_len;
-        u8 wmm_param_len;
-        u8 mesh_id_len;
-        u8 peer_link_len;
-        u8 preq_len;
-        u8 prep_len;
-        u8 perr_len;
-        u8 ch_switch_elem_len;
-        u8 country_elem_len;
-        u8 pwr_constr_elem_len;
-        u8 quiet_elem_len;
-        u8 num_of_quiet_elem;   /* can be more the one */
-        u8 timeout_int_len;
-};
-
 static inline struct ieee80211_local *hw_to_local(
         struct ieee80211_hw *hw)
 {
@@ -1233,23 +1178,10 @@ netdev_tx_t ieee80211_monitor_start_xmit(struct sk_buff *skb,
 netdev_tx_t ieee80211_subif_start_xmit(struct sk_buff *skb,
                                        struct net_device *dev);
 
-/*
- * radiotap header for status frames
- */
-struct ieee80211_tx_status_rtap_hdr {
-        struct ieee80211_radiotap_header hdr;
-        u8 rate;
-        u8 padding_for_rate;
-        __le16 tx_flags;
-        u8 data_retries;
-} __packed;
-
-
 /* HT */
 void ieee80211_ht_cap_ie_to_sta_ht_cap(struct ieee80211_supported_band *sband,
                                        struct ieee80211_ht_cap *ht_cap_ie,
                                        struct ieee80211_sta_ht_cap *ht_cap);
-void ieee80211_send_bar(struct ieee80211_sub_if_data *sdata, u8 *ra, u16 tid, u16 ssn);
 void ieee80211_send_delba(struct ieee80211_sub_if_data *sdata,
                           const u8 *da, u16 tid,
                           u16 initiator, u16 reason_code);
@@ -1333,6 +1265,7 @@ void mac80211_ev_michael_mic_failure(struct ieee80211_sub_if_data *sdata, int ke
                                      struct ieee80211_hdr *hdr, const u8 *tsc,
                                      gfp_t gfp);
 void ieee80211_set_wmm_default(struct ieee80211_sub_if_data *sdata);
+void ieee80211_xmit(struct ieee80211_sub_if_data *sdata, struct sk_buff *skb);
 void ieee80211_tx_skb(struct ieee80211_sub_if_data *sdata, struct sk_buff *skb);
 void ieee802_11_parse_elems(u8 *start, size_t len,
                             struct ieee802_11_elems *elems);
@@ -1364,11 +1297,11 @@ void ieee80211_stop_queue_by_reason(struct ieee80211_hw *hw, int queue,
                                     enum queue_stop_reason reason);
 void ieee80211_add_pending_skb(struct ieee80211_local *local,
                                struct sk_buff *skb);
-int ieee80211_add_pending_skbs(struct ieee80211_local *local,
-                               struct sk_buff_head *skbs);
-int ieee80211_add_pending_skbs_fn(struct ieee80211_local *local,
-                                  struct sk_buff_head *skbs,
-                                  void (*fn)(void *data), void *data);
+void ieee80211_add_pending_skbs(struct ieee80211_local *local,
+                                struct sk_buff_head *skbs);
+void ieee80211_add_pending_skbs_fn(struct ieee80211_local *local,
+                                   struct sk_buff_head *skbs,
+                                   void (*fn)(void *data), void *data);
 
 void ieee80211_send_auth(struct ieee80211_sub_if_data *sdata,
                          u16 transaction, u16 auth_alg,
@@ -1386,7 +1319,7 @@ struct sk_buff *ieee80211_build_probe_req(struct ieee80211_sub_if_data *sdata,
 void ieee80211_send_probe_req(struct ieee80211_sub_if_data *sdata, u8 *dst,
                               const u8 *ssid, size_t ssid_len,
                               const u8 *ie, size_t ie_len,
-                              u32 ratemask, bool directed);
+                              u32 ratemask, bool directed, bool no_cck);
 
 void ieee80211_sta_def_wmm_params(struct ieee80211_sub_if_data *sdata,
                                   const size_t supp_rates_len,
diff --git a/net/mac80211/iface.c b/net/mac80211/iface.c
index 556e7e6ddf0a..30d73552e9ab 100644
--- a/net/mac80211/iface.c
+++ b/net/mac80211/iface.c
@@ -299,8 +299,8 @@ static int ieee80211_do_open(struct net_device *dev, bool coming_up)
                         goto err_del_interface;
                 }
 
-                /* no locking required since STA is not live yet */
-                sta->flags |= WLAN_STA_AUTHORIZED;
+                /* no atomic bitop required since STA is not live yet */
+                set_sta_flag(sta, WLAN_STA_AUTHORIZED);
 
                 res = sta_info_insert(sta);
                 if (res) {
@@ -456,21 +456,19 @@ static void ieee80211_do_stop(struct ieee80211_sub_if_data *sdata,
                                                  BSS_CHANGED_BEACON_ENABLED);
 
                 /* remove beacon */
-                rcu_assign_pointer(sdata->u.ap.beacon, NULL);
+                RCU_INIT_POINTER(sdata->u.ap.beacon, NULL);
                 synchronize_rcu();
                 kfree(old_beacon);
 
-                /* free all potentially still buffered bcast frames */
-                while ((skb = skb_dequeue(&sdata->u.ap.ps_bc_buf))) {
-                        local->total_ps_buffered--;
-                        dev_kfree_skb(skb);
-                }
-
                 /* down all dependent devices, that is VLANs */
                 list_for_each_entry_safe(vlan, tmpsdata, &sdata->u.ap.vlans,
                                          u.vlan.list)
                         dev_close(vlan->dev);
                 WARN_ON(!list_empty(&sdata->u.ap.vlans));
+
+                /* free all potentially still buffered bcast frames */
+                local->total_ps_buffered -= skb_queue_len(&sdata->u.ap.ps_bc_buf);
+                skb_queue_purge(&sdata->u.ap.ps_bc_buf);
         }
 
         if (going_down)
@@ -645,7 +643,7 @@ static const struct net_device_ops ieee80211_dataif_ops = {
         .ndo_stop               = ieee80211_stop,
         .ndo_uninit             = ieee80211_teardown_sdata,
         .ndo_start_xmit         = ieee80211_subif_start_xmit,
-        .ndo_set_multicast_list = ieee80211_set_multicast_list,
+        .ndo_set_rx_mode        = ieee80211_set_multicast_list,
         .ndo_change_mtu         = ieee80211_change_mtu,
         .ndo_set_mac_address    = ieee80211_change_mac,
         .ndo_select_queue       = ieee80211_netdev_select_queue,
@@ -689,7 +687,7 @@ static const struct net_device_ops ieee80211_monitorif_ops = {
         .ndo_stop               = ieee80211_stop,
         .ndo_uninit             = ieee80211_teardown_sdata,
         .ndo_start_xmit         = ieee80211_monitor_start_xmit,
-        .ndo_set_multicast_list = ieee80211_set_multicast_list,
+        .ndo_set_rx_mode        = ieee80211_set_multicast_list,
         .ndo_change_mtu         = ieee80211_change_mtu,
         .ndo_set_mac_address    = eth_mac_addr,
         .ndo_select_queue       = ieee80211_monitor_select_queue,
@@ -1214,6 +1212,9 @@ void ieee80211_if_remove(struct ieee80211_sub_if_data *sdata)
         list_del_rcu(&sdata->list);
         mutex_unlock(&sdata->local->iflist_mtx);
 
+        if (ieee80211_vif_is_mesh(&sdata->vif))
+                mesh_path_flush_by_iface(sdata);
+
         synchronize_rcu();
         unregister_netdevice(sdata->dev);
 }
@@ -1233,6 +1234,9 @@ void ieee80211_remove_interfaces(struct ieee80211_local *local)
         list_for_each_entry_safe(sdata, tmp, &local->interfaces, list) {
                 list_del(&sdata->list);
 
+                if (ieee80211_vif_is_mesh(&sdata->vif))
+                        mesh_path_flush_by_iface(sdata);
+
                 unregister_netdevice_queue(sdata->dev, &unreg_list);
         }
         mutex_unlock(&local->iflist_mtx);
diff --git a/net/mac80211/key.c b/net/mac80211/key.c
index 5150c6d11b57..fb02ea52d2c2 100644
--- a/net/mac80211/key.c
+++ b/net/mac80211/key.c
@@ -15,6 +15,7 @@
 #include <linux/rcupdate.h>
 #include <linux/rtnetlink.h>
 #include <linux/slab.h>
+#include <linux/export.h>
 #include <net/mac80211.h>
 #include "ieee80211_i.h"
 #include "driver-ops.h"
@@ -464,7 +465,7 @@ int ieee80211_key_link(struct ieee80211_key *key,
                  * some hardware cannot handle TKIP with QoS, so
                  * we indicate whether QoS could be in use.
                  */
-                if (test_sta_flags(sta, WLAN_STA_WME))
+                if (test_sta_flag(sta, WLAN_STA_WME))
                         key->conf.flags |= IEEE80211_KEY_FLAG_WMM_STA;
         } else {
                 if (sdata->vif.type == NL80211_IFTYPE_STATION) {
@@ -478,7 +479,7 @@ int ieee80211_key_link(struct ieee80211_key *key,
                         /* same here, the AP could be using QoS */
                         ap = sta_info_get(key->sdata, key->sdata->u.mgd.bssid);
                         if (ap) {
-                                if (test_sta_flags(ap, WLAN_STA_WME))
+                                if (test_sta_flag(ap, WLAN_STA_WME))
                                         key->conf.flags |=
                                                 IEEE80211_KEY_FLAG_WMM_STA;
                         }
diff --git a/net/mac80211/led.c b/net/mac80211/led.c
index 14590332c81c..1bf7903496f8 100644
--- a/net/mac80211/led.c
+++ b/net/mac80211/led.c
@@ -9,6 +9,7 @@
 /* just for IFNAMSIZ */
 #include <linux/if.h>
 #include <linux/slab.h>
+#include <linux/export.h>
 #include "led.h"
 
 void ieee80211_led_rx(struct ieee80211_local *local)
diff --git a/net/mac80211/main.c b/net/mac80211/main.c
index acb44230b251..d999bf3b84e1 100644
--- a/net/mac80211/main.c
+++ b/net/mac80211/main.c
@@ -19,7 +19,7 @@
 #include <linux/if_arp.h>
 #include <linux/rtnetlink.h>
 #include <linux/bitmap.h>
-#include <linux/pm_qos_params.h>
+#include <linux/pm_qos.h>
 #include <linux/inetdevice.h>
 #include <net/net_namespace.h>
 #include <net/cfg80211.h>
@@ -325,6 +325,8 @@ u32 ieee80211_reset_erp_info(struct ieee80211_sub_if_data *sdata)
 static void ieee80211_tasklet_handler(unsigned long data)
 {
         struct ieee80211_local *local = (struct ieee80211_local *) data;
+        struct sta_info *sta, *tmp;
+        struct skb_eosp_msg_data *eosp_data;
         struct sk_buff *skb;
 
         while ((skb = skb_dequeue(&local->skb_queue)) ||
@@ -340,6 +342,18 @@ static void ieee80211_tasklet_handler(unsigned long data)
                         skb->pkt_type = 0;
                         ieee80211_tx_status(local_to_hw(local), skb);
                         break;
+                case IEEE80211_EOSP_MSG:
+                        eosp_data = (void *)skb->cb;
+                        for_each_sta_info(local, eosp_data->sta, sta, tmp) {
+                                /* skip wrong virtual interface */
+                                if (memcmp(eosp_data->iface,
+                                           sta->sdata->vif.addr, ETH_ALEN))
+                                        continue;
+                                clear_sta_flag(sta, WLAN_STA_SP);
+                                break;
+                        }
+                        dev_kfree_skb(skb);
+                        break;
                 default:
                         WARN(1, "mac80211: Packet is of unknown type %d\n",
                              skb->pkt_type);
@@ -608,6 +622,7 @@ struct ieee80211_hw *ieee80211_alloc_hw(size_t priv_data_len,
         local->hw.max_rates = 1;
         local->hw.max_report_rates = 0;
         local->hw.max_rx_aggregation_subframes = IEEE80211_MAX_AMPDU_BUF;
+        local->hw.max_tx_aggregation_subframes = IEEE80211_MAX_AMPDU_BUF;
         local->hw.conf.long_frame_max_tx_count = wiphy->retry_long;
         local->hw.conf.short_frame_max_tx_count = wiphy->retry_short;
         local->user_power_level = -1;
@@ -862,6 +877,10 @@ int ieee80211_register_hw(struct ieee80211_hw *hw)
         if (local->ops->sched_scan_start)
                 local->hw.wiphy->flags |= WIPHY_FLAG_SUPPORTS_SCHED_SCAN;
 
+        /* mac80211 based drivers don't support internal TDLS setup */
+        if (local->hw.wiphy->flags & WIPHY_FLAG_SUPPORTS_TDLS)
+                local->hw.wiphy->flags |= WIPHY_FLAG_TDLS_EXTERNAL_SETUP;
+
         result = wiphy_register(local->hw.wiphy);
         if (result < 0)
                 goto fail_wiphy_register;
@@ -885,12 +904,8 @@ int ieee80211_register_hw(struct ieee80211_hw *hw)
          * and we need some headroom for passing the frame to monitor
          * interfaces, but never both at the same time.
          */
-#ifndef __CHECKER__
-        BUILD_BUG_ON(IEEE80211_TX_STATUS_HEADROOM !=
-                        sizeof(struct ieee80211_tx_status_rtap_hdr));
-#endif
         local->tx_headroom = max_t(unsigned int , local->hw.extra_tx_headroom,
-                                   sizeof(struct ieee80211_tx_status_rtap_hdr));
+                                   IEEE80211_TX_STATUS_HEADROOM);
 
         debugfs_hw_add(local);
 
diff --git a/net/mac80211/mesh.c b/net/mac80211/mesh.c
index 29e9980c8e60..a7078fdba8ca 100644
--- a/net/mac80211/mesh.c
+++ b/net/mac80211/mesh.c
@@ -13,10 +13,6 @@
 #include "ieee80211_i.h"
 #include "mesh.h"
 
-#define IEEE80211_MESH_PEER_INACTIVITY_LIMIT (1800 * HZ)
-#define IEEE80211_MESH_HOUSEKEEPING_INTERVAL (60 * HZ)
-#define IEEE80211_MESH_RANN_INTERVAL         (1 * HZ)
-
 #define MESHCONF_CAPAB_ACCEPT_PLINKS 0x01
 #define MESHCONF_CAPAB_FORWARDING    0x08
 
@@ -27,6 +23,17 @@
 int mesh_allocated;
 static struct kmem_cache *rm_cache;
 
+#ifdef CONFIG_MAC80211_MESH
+bool mesh_action_is_path_sel(struct ieee80211_mgmt *mgmt)
+{
+        return (mgmt->u.action.u.mesh_action.action_code ==
+                        WLAN_MESH_ACTION_HWMP_PATH_SELECTION);
+}
+#else
+bool mesh_action_is_path_sel(struct ieee80211_mgmt *mgmt)
+{ return false; }
+#endif
+
 void ieee80211s_init(void)
 {
         mesh_pathtbl_init();
@@ -193,10 +200,9 @@ int mesh_rmc_check(u8 *sa, struct ieee80211s_hdr *mesh_hdr,
         }
 
         p = kmem_cache_alloc(rm_cache, GFP_ATOMIC);
-        if (!p) {
-                printk(KERN_DEBUG "o11s: could not allocate RMC entry\n");
+        if (!p)
                 return 0;
-        }
+
         p->seqnum = seqnum;
         p->exp_time = jiffies + RMC_TIMEOUT;
         memcpy(p->sa, sa, ETH_ALEN);
@@ -204,89 +210,136 @@ int mesh_rmc_check(u8 *sa, struct ieee80211s_hdr *mesh_hdr,
         return 0;
 }
 
-void mesh_mgmt_ies_add(struct sk_buff *skb, struct ieee80211_sub_if_data *sdata)
+int
+mesh_add_meshconf_ie(struct sk_buff *skb, struct ieee80211_sub_if_data *sdata)
 {
-        struct ieee80211_local *local = sdata->local;
-        struct ieee80211_supported_band *sband;
-        u8 *pos;
-        int len, i, rate;
-        u8 neighbors;
-
-        sband = local->hw.wiphy->bands[local->hw.conf.channel->band];
-        len = sband->n_bitrates;
-        if (len > 8)
-                len = 8;
-        pos = skb_put(skb, len + 2);
-        *pos++ = WLAN_EID_SUPP_RATES;
-        *pos++ = len;
-        for (i = 0; i < len; i++) {
-                rate = sband->bitrates[i].bitrate;
-                *pos++ = (u8) (rate / 5);
-        }
-
-        if (sband->n_bitrates > len) {
-                pos = skb_put(skb, sband->n_bitrates - len + 2);
-                *pos++ = WLAN_EID_EXT_SUPP_RATES;
-                *pos++ = sband->n_bitrates - len;
-                for (i = len; i < sband->n_bitrates; i++) {
-                        rate = sband->bitrates[i].bitrate;
-                        *pos++ = (u8) (rate / 5);
-                }
-        }
-
-        if (sband->band == IEEE80211_BAND_2GHZ) {
-                pos = skb_put(skb, 2 + 1);
-                *pos++ = WLAN_EID_DS_PARAMS;
-                *pos++ = 1;
-                *pos++ = ieee80211_frequency_to_channel(local->hw.conf.channel->center_freq);
-        }
+        struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
+        u8 *pos, neighbors;
+        u8 meshconf_len = sizeof(struct ieee80211_meshconf_ie);
 
-        pos = skb_put(skb, 2 + sdata->u.mesh.mesh_id_len);
-        *pos++ = WLAN_EID_MESH_ID;
-        *pos++ = sdata->u.mesh.mesh_id_len;
-        if (sdata->u.mesh.mesh_id_len)
-                memcpy(pos, sdata->u.mesh.mesh_id, sdata->u.mesh.mesh_id_len);
+        if (skb_tailroom(skb) < 2 + meshconf_len)
+                return -ENOMEM;
 
-        pos = skb_put(skb, 2 + sizeof(struct ieee80211_meshconf_ie));
+        pos = skb_put(skb, 2 + meshconf_len);
         *pos++ = WLAN_EID_MESH_CONFIG;
-        *pos++ = sizeof(struct ieee80211_meshconf_ie);
+        *pos++ = meshconf_len;
 
         /* Active path selection protocol ID */
-        *pos++ = sdata->u.mesh.mesh_pp_id;
-
+        *pos++ = ifmsh->mesh_pp_id;
         /* Active path selection metric ID   */
-        *pos++ = sdata->u.mesh.mesh_pm_id;
-
+        *pos++ = ifmsh->mesh_pm_id;
         /* Congestion control mode identifier */
-        *pos++ = sdata->u.mesh.mesh_cc_id;
-
+        *pos++ = ifmsh->mesh_cc_id;
         /* Synchronization protocol identifier */
-        *pos++ = sdata->u.mesh.mesh_sp_id;
-
+        *pos++ = ifmsh->mesh_sp_id;
         /* Authentication Protocol identifier */
-        *pos++ = sdata->u.mesh.mesh_auth_id;
-
+        *pos++ = ifmsh->mesh_auth_id;
         /* Mesh Formation Info - number of neighbors */
-        neighbors = atomic_read(&sdata->u.mesh.mshstats.estab_plinks);
+        neighbors = atomic_read(&ifmsh->mshstats.estab_plinks);
         /* Number of neighbor mesh STAs or 15 whichever is smaller */
         neighbors = (neighbors > 15) ? 15 : neighbors;
         *pos++ = neighbors << 1;
-
         /* Mesh capability */
-        sdata->u.mesh.accepting_plinks = mesh_plink_availables(sdata);
+        ifmsh->accepting_plinks = mesh_plink_availables(sdata);
         *pos = MESHCONF_CAPAB_FORWARDING;
-        *pos++ |= sdata->u.mesh.accepting_plinks ?
+        *pos++ |= ifmsh->accepting_plinks ?
             MESHCONF_CAPAB_ACCEPT_PLINKS : 0x00;
         *pos++ = 0x00;
 
-        if (sdata->u.mesh.ie) {
-                int len = sdata->u.mesh.ie_len;
-                const u8 *data = sdata->u.mesh.ie;
-                if (skb_tailroom(skb) > len)
-                        memcpy(skb_put(skb, len), data, len);
+        return 0;
+}
+
+int
+mesh_add_meshid_ie(struct sk_buff *skb, struct ieee80211_sub_if_data *sdata)
+{
+        struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
+        u8 *pos;
+
+        if (skb_tailroom(skb) < 2 + ifmsh->mesh_id_len)
+                return -ENOMEM;
+
+        pos = skb_put(skb, 2 + ifmsh->mesh_id_len);
+        *pos++ = WLAN_EID_MESH_ID;
+        *pos++ = ifmsh->mesh_id_len;
+        if (ifmsh->mesh_id_len)
+                memcpy(pos, ifmsh->mesh_id, ifmsh->mesh_id_len);
+
+        return 0;
+}
+
+int
+mesh_add_vendor_ies(struct sk_buff *skb, struct ieee80211_sub_if_data *sdata)
+{
+        struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
+        u8 offset, len;
+        const u8 *data;
+
+        if (!ifmsh->ie || !ifmsh->ie_len)
+                return 0;
+
+        /* fast-forward to vendor IEs */
+        offset = ieee80211_ie_split_vendor(ifmsh->ie, ifmsh->ie_len, 0);
+
+        if (offset) {
+                len = ifmsh->ie_len - offset;
+                data = ifmsh->ie + offset;
+                if (skb_tailroom(skb) < len)
+                        return -ENOMEM;
+                memcpy(skb_put(skb, len), data, len);
         }
+
+        return 0;
 }
 
+int
+mesh_add_rsn_ie(struct sk_buff *skb, struct ieee80211_sub_if_data *sdata)
+{
+        struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
+        u8 len = 0;
+        const u8 *data;
+
+        if (!ifmsh->ie || !ifmsh->ie_len)
+                return 0;
+
+        /* find RSN IE */
+        data = ifmsh->ie;
+        while (data < ifmsh->ie + ifmsh->ie_len) {
+                if (*data == WLAN_EID_RSN) {
+                        len = data[1] + 2;
+                        break;
+                }
+                data++;
+        }
+
+        if (len) {
+                if (skb_tailroom(skb) < len)
+                        return -ENOMEM;
+                memcpy(skb_put(skb, len), data, len);
+        }
+
+        return 0;
+}
+
+int mesh_add_ds_params_ie(struct sk_buff *skb,
+                          struct ieee80211_sub_if_data *sdata)
+{
+        struct ieee80211_local *local = sdata->local;
+        struct ieee80211_supported_band *sband;
+        u8 *pos;
+
+        if (skb_tailroom(skb) < 3)
+                return -ENOMEM;
+
+        sband = local->hw.wiphy->bands[local->hw.conf.channel->band];
+        if (sband->band == IEEE80211_BAND_2GHZ) {
+                pos = skb_put(skb, 2 + 1);
+                *pos++ = WLAN_EID_DS_PARAMS;
+                *pos++ = 1;
+                *pos++ = ieee80211_frequency_to_channel(local->hw.conf.channel->center_freq);
+        }
+
+        return 0;
+}
 
 static void ieee80211_mesh_path_timer(unsigned long data)
 {
@@ -352,8 +405,7 @@ int ieee80211_fill_mesh_addresses(struct ieee80211_hdr *hdr, __le16 *fc,
                 memcpy(hdr->addr3, meshsa, ETH_ALEN);
                 return 24;
         } else {
-                *fc |= cpu_to_le16(IEEE80211_FCTL_FROMDS |
-                                IEEE80211_FCTL_TODS);
+                *fc |= cpu_to_le16(IEEE80211_FCTL_FROMDS | IEEE80211_FCTL_TODS);
                 /* RA TA DA SA */
                 memset(hdr->addr1, 0, ETH_ALEN);   /* RA is resolved later */
                 memcpy(hdr->addr2, meshsa, ETH_ALEN);
@@ -425,7 +477,8 @@ static void ieee80211_mesh_rootpath(struct ieee80211_sub_if_data *sdata)
 
         mesh_path_tx_root_frame(sdata);
         mod_timer(&ifmsh->mesh_path_root_timer,
-                  round_jiffies(jiffies + IEEE80211_MESH_RANN_INTERVAL));
+                  round_jiffies(TU_TO_EXP_TIME(
+                                  ifmsh->mshcfg.dot11MeshHWMPRannInterval)));
 }
 
 #ifdef CONFIG_PM
@@ -433,7 +486,7 @@ void ieee80211_mesh_quiesce(struct ieee80211_sub_if_data *sdata)
 {
         struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
 
-        /* use atomic bitops in case both timers fire at the same time */
+        /* use atomic bitops in case all timers fire at the same time */
 
         if (del_timer_sync(&ifmsh->housekeeping_timer))
                 set_bit(TMR_RUNNING_HK, &ifmsh->timers_running);
@@ -557,11 +610,18 @@ static void ieee80211_mesh_rx_mgmt_action(struct ieee80211_sub_if_data *sdata,
                                           struct ieee80211_rx_status *rx_status)
 {
         switch (mgmt->u.action.category) {
-        case WLAN_CATEGORY_MESH_ACTION:
-                mesh_rx_plink_frame(sdata, mgmt, len, rx_status);
+        case WLAN_CATEGORY_SELF_PROTECTED:
+                switch (mgmt->u.action.u.self_prot.action_code) {
+                case WLAN_SP_MESH_PEERING_OPEN:
+                case WLAN_SP_MESH_PEERING_CLOSE:
+                case WLAN_SP_MESH_PEERING_CONFIRM:
+                        mesh_rx_plink_frame(sdata, mgmt, len, rx_status);
+                        break;
+                }
                 break;
-        case WLAN_CATEGORY_MESH_PATH_SEL:
-                mesh_rx_path_sel_frame(sdata, mgmt, len);
+        case WLAN_CATEGORY_MESH_ACTION:
+                if (mesh_action_is_path_sel(mgmt))
+                        mesh_rx_path_sel_frame(sdata, mgmt, len);
                 break;
         }
 }
@@ -633,6 +693,7 @@ void ieee80211_mesh_init_sdata(struct ieee80211_sub_if_data *sdata)
         ifmsh->accepting_plinks = true;
         ifmsh->preq_id = 0;
         ifmsh->sn = 0;
+        ifmsh->num_gates = 0;
         atomic_set(&ifmsh->mpaths, 0);
         mesh_rmc_init(sdata);
         ifmsh->last_preq = jiffies;
diff --git a/net/mac80211/mesh.h b/net/mac80211/mesh.h
index 249e733362e7..8c00e2d1d636 100644
--- a/net/mac80211/mesh.h
+++ b/net/mac80211/mesh.h
@@ -80,7 +80,10 @@ enum mesh_deferred_task_flags {
  *      retry
  * @discovery_retries: number of discovery retries
  * @flags: mesh path flags, as specified on &enum mesh_path_flags
- * @state_lock: mesh path state lock
+ * @state_lock: mesh path state lock used to protect changes to the
+ * mpath itself.  No need to take this lock when adding or removing
+ * an mpath to a hash bucket on a path table.
+ * @is_gate: the destination station of this path is a mesh gate
  *
  *
  * The combination of dst and sdata is unique in the mesh path table. Since the
@@ -104,6 +107,7 @@ struct mesh_path {
         u8 discovery_retries;
         enum mesh_path_flags flags;
         spinlock_t state_lock;
+        bool is_gate;
 };
 
 /**
@@ -120,6 +124,9 @@ struct mesh_path {
  *      buckets
  * @mean_chain_len: maximum average length for the hash buckets' list, if it is
  *      reached, the table will grow
+ * @known_gates: list of known mesh gates and their mpaths by the station. The
+ * gate's mpath may or may not be resolved and active.
+ *
  * rcu_head: RCU head to free the table
  */
 struct mesh_table {
@@ -133,6 +140,8 @@ struct mesh_table {
         int (*copy_node) (struct hlist_node *p, struct mesh_table *newtbl);
         int size_order;
         int mean_chain_len;
+        struct hlist_head *known_gates;
+        spinlock_t gates_lock;
 
         struct rcu_head rcu_head;
 };
@@ -166,6 +175,8 @@ struct mesh_rmc {
         u32 idx_mask;
 };
 
+#define IEEE80211_MESH_PEER_INACTIVITY_LIMIT (1800 * HZ)
+#define IEEE80211_MESH_HOUSEKEEPING_INTERVAL (60 * HZ)
 
 #define MESH_DEFAULT_BEACON_INTERVAL            1000    /* in 1024 us units */
 
@@ -177,14 +188,6 @@ struct mesh_rmc {
 /* Maximum number of paths per interface */
 #define MESH_MAX_MPATHS         1024
 
-/* Pending ANA approval */
-#define MESH_PATH_SEL_ACTION    0
-
-/* PERR reason codes */
-#define PEER_RCODE_UNSPECIFIED  11
-#define PERR_RCODE_NO_ROUTE     12
-#define PERR_RCODE_DEST_UNREACH 13
-
 /* Public interfaces */
 /* Various */
 int ieee80211_fill_mesh_addresses(struct ieee80211_hdr *hdr, __le16 *fc,
@@ -199,6 +202,16 @@ bool mesh_matches_local(struct ieee802_11_elems *ie,
 void mesh_ids_set_default(struct ieee80211_if_mesh *mesh);
 void mesh_mgmt_ies_add(struct sk_buff *skb,
                 struct ieee80211_sub_if_data *sdata);
+int mesh_add_meshconf_ie(struct sk_buff *skb,
+                         struct ieee80211_sub_if_data *sdata);
+int mesh_add_meshid_ie(struct sk_buff *skb,
+                       struct ieee80211_sub_if_data *sdata);
+int mesh_add_rsn_ie(struct sk_buff *skb,
+                    struct ieee80211_sub_if_data *sdata);
+int mesh_add_vendor_ies(struct sk_buff *skb,
+                        struct ieee80211_sub_if_data *sdata);
+int mesh_add_ds_params_ie(struct sk_buff *skb,
+                          struct ieee80211_sub_if_data *sdata);
 void mesh_rmc_free(struct ieee80211_sub_if_data *sdata);
 int mesh_rmc_init(struct ieee80211_sub_if_data *sdata);
 void ieee80211s_init(void);
@@ -223,10 +236,13 @@ struct mesh_path *mesh_path_lookup_by_idx(int idx,
                 struct ieee80211_sub_if_data *sdata);
 void mesh_path_fix_nexthop(struct mesh_path *mpath, struct sta_info *next_hop);
 void mesh_path_expire(struct ieee80211_sub_if_data *sdata);
-void mesh_path_flush(struct ieee80211_sub_if_data *sdata);
 void mesh_rx_path_sel_frame(struct ieee80211_sub_if_data *sdata,
                 struct ieee80211_mgmt *mgmt, size_t len);
 int mesh_path_add(u8 *dst, struct ieee80211_sub_if_data *sdata);
+
+int mesh_path_add_gate(struct mesh_path *mpath);
+int mesh_path_send_to_gates(struct mesh_path *mpath);
+int mesh_gate_num(struct ieee80211_sub_if_data *sdata);
 /* Mesh plinks */
 void mesh_neighbour_update(u8 *hw_addr, u32 rates,
                 struct ieee80211_sub_if_data *sdata,
@@ -256,12 +272,14 @@ void mesh_pathtbl_unregister(void);
 int mesh_path_del(u8 *addr, struct ieee80211_sub_if_data *sdata);
 void mesh_path_timer(unsigned long data);
 void mesh_path_flush_by_nexthop(struct sta_info *sta);
+void mesh_path_flush_by_iface(struct ieee80211_sub_if_data *sdata);
 void mesh_path_discard_frame(struct sk_buff *skb,
                 struct ieee80211_sub_if_data *sdata);
 void mesh_path_quiesce(struct ieee80211_sub_if_data *sdata);
 void mesh_path_restart(struct ieee80211_sub_if_data *sdata);
 void mesh_path_tx_root_frame(struct ieee80211_sub_if_data *sdata);
 
+bool mesh_action_is_path_sel(struct ieee80211_mgmt *mgmt);
 extern int mesh_paths_generation;
 
 #ifdef CONFIG_MAC80211_MESH
diff --git a/net/mac80211/mesh_hwmp.c b/net/mac80211/mesh_hwmp.c
index 3460108810d5..174040a42887 100644
--- a/net/mac80211/mesh_hwmp.c
+++ b/net/mac80211/mesh_hwmp.c
@@ -8,10 +8,12 @@
  */
 
 #include <linux/slab.h>
+#include "wme.h"
 #include "mesh.h"
 
 #ifdef CONFIG_MAC80211_VERBOSE_MHWMP_DEBUG
-#define mhwmp_dbg(fmt, args...)   printk(KERN_DEBUG "Mesh HWMP: " fmt, ##args)
+#define mhwmp_dbg(fmt, args...) \
+        printk(KERN_DEBUG "Mesh HWMP (%s): " fmt "\n", sdata->name, ##args)
 #else
 #define mhwmp_dbg(fmt, args...)   do { (void)(0); } while (0)
 #endif
@@ -68,12 +70,12 @@ static inline u32 u16_field_get(u8 *preq_elem, int offset, bool ae)
 #define PREP_IE_FLAGS(x)        PREQ_IE_FLAGS(x)
 #define PREP_IE_HOPCOUNT(x)     PREQ_IE_HOPCOUNT(x)
 #define PREP_IE_TTL(x)          PREQ_IE_TTL(x)
-#define PREP_IE_ORIG_ADDR(x)    (x + 3)
-#define PREP_IE_ORIG_SN(x)      u32_field_get(x, 9, 0)
+#define PREP_IE_ORIG_ADDR(x)    (AE_F_SET(x) ? x + 27 : x + 21)
+#define PREP_IE_ORIG_SN(x)      u32_field_get(x, 27, AE_F_SET(x))
 #define PREP_IE_LIFETIME(x)     u32_field_get(x, 13, AE_F_SET(x))
 #define PREP_IE_METRIC(x)       u32_field_get(x, 17, AE_F_SET(x))
-#define PREP_IE_TARGET_ADDR(x)  (AE_F_SET(x) ? x + 27 : x + 21)
-#define PREP_IE_TARGET_SN(x)    u32_field_get(x, 27, AE_F_SET(x))
+#define PREP_IE_TARGET_ADDR(x)  (x + 3)
+#define PREP_IE_TARGET_SN(x)    u32_field_get(x, 9, 0)
 
 #define PERR_IE_TTL(x)          (*(x))
 #define PERR_IE_TARGET_FLAGS(x) (*(x + 2))
@@ -132,24 +134,25 @@ static int mesh_path_sel_frame_tx(enum mpath_frame_type action, u8 flags,
         memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN);
         /* BSSID == SA */
         memcpy(mgmt->bssid, sdata->vif.addr, ETH_ALEN);
-        mgmt->u.action.category = WLAN_CATEGORY_MESH_PATH_SEL;
-        mgmt->u.action.u.mesh_action.action_code = MESH_PATH_SEL_ACTION;
+        mgmt->u.action.category = WLAN_CATEGORY_MESH_ACTION;
+        mgmt->u.action.u.mesh_action.action_code =
+                                        WLAN_MESH_ACTION_HWMP_PATH_SELECTION;
 
         switch (action) {
         case MPATH_PREQ:
-                mhwmp_dbg("sending PREQ to %pM\n", target);
+                mhwmp_dbg("sending PREQ to %pM", target);
                 ie_len = 37;
                 pos = skb_put(skb, 2 + ie_len);
                 *pos++ = WLAN_EID_PREQ;
                 break;
         case MPATH_PREP:
-                mhwmp_dbg("sending PREP to %pM\n", target);
+                mhwmp_dbg("sending PREP to %pM", target);
                 ie_len = 31;
                 pos = skb_put(skb, 2 + ie_len);
                 *pos++ = WLAN_EID_PREP;
                 break;
         case MPATH_RANN:
-                mhwmp_dbg("sending RANN from %pM\n", orig_addr);
+                mhwmp_dbg("sending RANN from %pM", orig_addr);
                 ie_len = sizeof(struct ieee80211_rann_ie);
                 pos = skb_put(skb, 2 + ie_len);
                 *pos++ = WLAN_EID_RANN;
@@ -163,35 +166,63 @@ static int mesh_path_sel_frame_tx(enum mpath_frame_type action, u8 flags,
         *pos++ = flags;
         *pos++ = hop_count;
         *pos++ = ttl;
-        if (action == MPATH_PREQ) {
-                memcpy(pos, &preq_id, 4);
+        if (action == MPATH_PREP) {
+                memcpy(pos, target, ETH_ALEN);
+                pos += ETH_ALEN;
+                memcpy(pos, &target_sn, 4);
                 pos += 4;
-        }
-        memcpy(pos, orig_addr, ETH_ALEN);
-        pos += ETH_ALEN;
-        memcpy(pos, &orig_sn, 4);
-        pos += 4;
-        if (action != MPATH_RANN) {
-                memcpy(pos, &lifetime, 4);
+        } else {
+                if (action == MPATH_PREQ) {
+                        memcpy(pos, &preq_id, 4);
+                        pos += 4;
+                }
+                memcpy(pos, orig_addr, ETH_ALEN);
+                pos += ETH_ALEN;
+                memcpy(pos, &orig_sn, 4);
                 pos += 4;
         }
+        memcpy(pos, &lifetime, 4);      /* interval for RANN */
+        pos += 4;
         memcpy(pos, &metric, 4);
         pos += 4;
         if (action == MPATH_PREQ) {
-                /* destination count */
-                *pos++ = 1;
+                *pos++ = 1; /* destination count */
                 *pos++ = target_flags;
-        }
-        if (action != MPATH_RANN) {
                 memcpy(pos, target, ETH_ALEN);
                 pos += ETH_ALEN;
                 memcpy(pos, &target_sn, 4);
+                pos += 4;
+        } else if (action == MPATH_PREP) {
+                memcpy(pos, orig_addr, ETH_ALEN);
+                pos += ETH_ALEN;
+                memcpy(pos, &orig_sn, 4);
+                pos += 4;
         }
 
         ieee80211_tx_skb(sdata, skb);
         return 0;
 }
 
+
+/*  Headroom is not adjusted.  Caller should ensure that skb has sufficient
+ *  headroom in case the frame is encrypted. */
+static void prepare_frame_for_deferred_tx(struct ieee80211_sub_if_data *sdata,
+                struct sk_buff *skb)
+{
+        struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
+
+        skb_set_mac_header(skb, 0);
+        skb_set_network_header(skb, 0);
+        skb_set_transport_header(skb, 0);
+
+        /* Send all internal mgmt frames on VO. Accordingly set TID to 7. */
+        skb_set_queue_mapping(skb, IEEE80211_AC_VO);
+        skb->priority = 7;
+
+        info->control.vif = &sdata->vif;
+        ieee80211_set_qos_hdr(sdata, skb);
+}
+
 /**
  * mesh_send_path error - Sends a PERR mesh management frame
  *
@@ -199,6 +230,10 @@ static int mesh_path_sel_frame_tx(enum mpath_frame_type action, u8 flags,
  * @target_sn: SN of the broken destination
  * @target_rcode: reason code for this PERR
  * @ra: node this frame is addressed to
+ *
+ * Note: This function may be called with driver locks taken that the driver
+ * also acquires in the TX path.  To avoid a deadlock we don't transmit the
+ * frame directly but add it to the pending queue instead.
  */
 int mesh_path_error_tx(u8 ttl, u8 *target, __le32 target_sn,
                        __le16 target_rcode, const u8 *ra,
@@ -212,7 +247,7 @@ int mesh_path_error_tx(u8 ttl, u8 *target, __le32 target_sn,
 
         if (!skb)
                 return -1;
-        skb_reserve(skb, local->hw.extra_tx_headroom);
+        skb_reserve(skb, local->tx_headroom + local->hw.extra_tx_headroom);
         /* 25 is the size of the common mgmt part (24) plus the size of the
          * common action part (1)
          */
@@ -224,9 +259,11 @@ int mesh_path_error_tx(u8 ttl, u8 *target, __le32 target_sn,
 
         memcpy(mgmt->da, ra, ETH_ALEN);
         memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN);
-        /* BSSID is left zeroed, wildcard value */
-        mgmt->u.action.category = WLAN_CATEGORY_MESH_PATH_SEL;
-        mgmt->u.action.u.mesh_action.action_code = MESH_PATH_SEL_ACTION;
+        /* BSSID == SA */
+        memcpy(mgmt->bssid, sdata->vif.addr, ETH_ALEN);
+        mgmt->u.action.category = WLAN_CATEGORY_MESH_ACTION;
+        mgmt->u.action.u.mesh_action.action_code =
+                                        WLAN_MESH_ACTION_HWMP_PATH_SELECTION;
         ie_len = 15;
         pos = skb_put(skb, 2 + ie_len);
         *pos++ = WLAN_EID_PERR;
@@ -251,7 +288,9 @@ int mesh_path_error_tx(u8 ttl, u8 *target, __le32 target_sn,
         pos += 4;
         memcpy(pos, &target_rcode, 2);
 
-        ieee80211_tx_skb(sdata, skb);
+        /* see note in function header */
+        prepare_frame_for_deferred_tx(sdata, skb);
+        ieee80211_add_pending_skb(local, skb);
         return 0;
 }
 
@@ -449,7 +488,6 @@ static u32 hwmp_route_info_get(struct ieee80211_sub_if_data *sdata,
 
                 if (fresh_info) {
                         mesh_path_assign_nexthop(mpath, sta);
-                        mpath->flags &= ~MESH_PATH_SN_VALID;
                         mpath->metric = last_hop_metric;
                         mpath->exp_time = time_after(mpath->exp_time, exp_time)
                                           ?  mpath->exp_time : exp_time;
@@ -484,10 +522,10 @@ static void hwmp_preq_frame_process(struct ieee80211_sub_if_data *sdata,
         orig_sn = PREQ_IE_ORIG_SN(preq_elem);
         target_flags = PREQ_IE_TARGET_F(preq_elem);
 
-        mhwmp_dbg("received PREQ from %pM\n", orig_addr);
+        mhwmp_dbg("received PREQ from %pM", orig_addr);
 
         if (memcmp(target_addr, sdata->vif.addr, ETH_ALEN) == 0) {
-                mhwmp_dbg("PREQ is for us\n");
+                mhwmp_dbg("PREQ is for us");
                 forward = false;
                 reply = true;
                 metric = 0;
@@ -523,7 +561,7 @@ static void hwmp_preq_frame_process(struct ieee80211_sub_if_data *sdata,
                 lifetime = PREQ_IE_LIFETIME(preq_elem);
                 ttl = ifmsh->mshcfg.element_ttl;
                 if (ttl != 0) {
-                        mhwmp_dbg("replying to the PREQ\n");
+                        mhwmp_dbg("replying to the PREQ");
                         mesh_path_sel_frame_tx(MPATH_PREP, 0, target_addr,
                                 cpu_to_le32(target_sn), 0, orig_addr,
                                 cpu_to_le32(orig_sn), mgmt->sa, 0, ttl,
@@ -543,7 +581,7 @@ static void hwmp_preq_frame_process(struct ieee80211_sub_if_data *sdata,
                         ifmsh->mshstats.dropped_frames_ttl++;
                         return;
                 }
-                mhwmp_dbg("forwarding the PREQ from %pM\n", orig_addr);
+                mhwmp_dbg("forwarding the PREQ from %pM", orig_addr);
                 --ttl;
                 flags = PREQ_IE_FLAGS(preq_elem);
                 preq_id = PREQ_IE_PREQ_ID(preq_elem);
@@ -578,7 +616,7 @@ static void hwmp_prep_frame_process(struct ieee80211_sub_if_data *sdata,
         u8 next_hop[ETH_ALEN];
         u32 target_sn, orig_sn, lifetime;
 
-        mhwmp_dbg("received PREP from %pM\n", PREP_IE_ORIG_ADDR(prep_elem));
+        mhwmp_dbg("received PREP from %pM", PREP_IE_ORIG_ADDR(prep_elem));
 
         /* Note that we divert from the draft nomenclature and denominate
          * destination to what the draft refers to as origininator. So in this
@@ -684,6 +722,8 @@ static void hwmp_rann_frame_process(struct ieee80211_sub_if_data *sdata,
         u8 ttl, flags, hopcount;
         u8 *orig_addr;
         u32 orig_sn, metric;
+        u32 interval = ifmsh->mshcfg.dot11MeshHWMPRannInterval;
+        bool root_is_gate;
 
         ttl = rann->rann_ttl;
         if (ttl <= 1) {
@@ -692,12 +732,19 @@ static void hwmp_rann_frame_process(struct ieee80211_sub_if_data *sdata,
         }
         ttl--;
         flags = rann->rann_flags;
+        root_is_gate = !!(flags & RANN_FLAG_IS_GATE);
         orig_addr = rann->rann_addr;
         orig_sn = rann->rann_seq;
         hopcount = rann->rann_hopcount;
         hopcount++;
         metric = rann->rann_metric;
-        mhwmp_dbg("received RANN from %pM\n", orig_addr);
+
+        /*  Ignore our own RANNs */
+        if (memcmp(orig_addr, sdata->vif.addr, ETH_ALEN) == 0)
+                return;
+
+        mhwmp_dbg("received RANN from %pM (is_gate=%d)", orig_addr,
+                        root_is_gate);
 
         rcu_read_lock();
         mpath = mesh_path_lookup(orig_addr, sdata);
@@ -709,18 +756,28 @@ static void hwmp_rann_frame_process(struct ieee80211_sub_if_data *sdata,
                         sdata->u.mesh.mshstats.dropped_frames_no_route++;
                         return;
                 }
-                mesh_queue_preq(mpath,
-                                PREQ_Q_F_START | PREQ_Q_F_REFRESH);
         }
+
+        if ((!(mpath->flags & (MESH_PATH_ACTIVE | MESH_PATH_RESOLVING)) ||
+             time_after(jiffies, mpath->exp_time - 1*HZ)) &&
+             !(mpath->flags & MESH_PATH_FIXED)) {
+                mhwmp_dbg("%s time to refresh root mpath %pM", sdata->name,
+                                                               orig_addr);
+                mesh_queue_preq(mpath, PREQ_Q_F_START | PREQ_Q_F_REFRESH);
+        }
+
         if (mpath->sn < orig_sn) {
                 mesh_path_sel_frame_tx(MPATH_RANN, flags, orig_addr,
                                        cpu_to_le32(orig_sn),
                                        0, NULL, 0, broadcast_addr,
-                                       hopcount, ttl, 0,
+                                       hopcount, ttl, cpu_to_le32(interval),
                                        cpu_to_le32(metric + mpath->metric),
                                        0, sdata);
                 mpath->sn = orig_sn;
         }
+        if (root_is_gate)
+                mesh_path_add_gate(mpath);
+
         rcu_read_unlock();
 }
 
@@ -732,11 +789,20 @@ void mesh_rx_path_sel_frame(struct ieee80211_sub_if_data *sdata,
         struct ieee802_11_elems elems;
         size_t baselen;
         u32 last_hop_metric;
+        struct sta_info *sta;
 
         /* need action_code */
         if (len < IEEE80211_MIN_ACTION_SIZE + 1)
                 return;
 
+        rcu_read_lock();
+        sta = sta_info_get(sdata, mgmt->sa);
+        if (!sta || sta->plink_state != NL80211_PLINK_ESTAB) {
+                rcu_read_unlock();
+                return;
+        }
+        rcu_read_unlock();
+
         baselen = (u8 *) mgmt->u.action.u.mesh_action.variable - (u8 *) mgmt;
         ieee802_11_parse_elems(mgmt->u.action.u.mesh_action.variable,
                         len - baselen, &elems);
@@ -788,16 +854,16 @@ static void mesh_queue_preq(struct mesh_path *mpath, u8 flags)
 
         preq_node = kmalloc(sizeof(struct mesh_preq_queue), GFP_ATOMIC);
         if (!preq_node) {
-                mhwmp_dbg("could not allocate PREQ node\n");
+                mhwmp_dbg("could not allocate PREQ node");
                 return;
         }
 
-        spin_lock(&ifmsh->mesh_preq_queue_lock);
+        spin_lock_bh(&ifmsh->mesh_preq_queue_lock);
         if (ifmsh->preq_queue_len == MAX_PREQ_QUEUE_LEN) {
-                spin_unlock(&ifmsh->mesh_preq_queue_lock);
+                spin_unlock_bh(&ifmsh->mesh_preq_queue_lock);
                 kfree(preq_node);
                 if (printk_ratelimit())
-                        mhwmp_dbg("PREQ node queue full\n");
+                        mhwmp_dbg("PREQ node queue full");
                 return;
         }
 
@@ -806,7 +872,7 @@ static void mesh_queue_preq(struct mesh_path *mpath, u8 flags)
 
         list_add_tail(&preq_node->list, &ifmsh->preq_queue.list);
         ++ifmsh->preq_queue_len;
-        spin_unlock(&ifmsh->mesh_preq_queue_lock);
+        spin_unlock_bh(&ifmsh->mesh_preq_queue_lock);
 
         if (time_after(jiffies, ifmsh->last_preq + min_preq_int_jiff(sdata)))
                 ieee80211_queue_work(&sdata->local->hw, &sdata->work);
@@ -982,35 +1048,46 @@ void mesh_path_timer(unsigned long data)
 {
         struct mesh_path *mpath = (void *) data;
         struct ieee80211_sub_if_data *sdata = mpath->sdata;
+        int ret;
 
         if (sdata->local->quiescing)
                 return;
 
         spin_lock_bh(&mpath->state_lock);
         if (mpath->flags & MESH_PATH_RESOLVED ||
-                        (!(mpath->flags & MESH_PATH_RESOLVING)))
+                        (!(mpath->flags & MESH_PATH_RESOLVING))) {
                 mpath->flags &= ~(MESH_PATH_RESOLVING | MESH_PATH_RESOLVED);
-        else if (mpath->discovery_retries < max_preq_retries(sdata)) {
+                spin_unlock_bh(&mpath->state_lock);
+        } else if (mpath->discovery_retries < max_preq_retries(sdata)) {
                 ++mpath->discovery_retries;
                 mpath->discovery_timeout *= 2;
+                spin_unlock_bh(&mpath->state_lock);
                 mesh_queue_preq(mpath, 0);
         } else {
                 mpath->flags = 0;
                 mpath->exp_time = jiffies;
-                mesh_path_flush_pending(mpath);
+                spin_unlock_bh(&mpath->state_lock);
+                if (!mpath->is_gate && mesh_gate_num(sdata) > 0) {
+                        ret = mesh_path_send_to_gates(mpath);
+                        if (ret)
+                                mhwmp_dbg("no gate was reachable");
+                } else
+                        mesh_path_flush_pending(mpath);
         }
-
-        spin_unlock_bh(&mpath->state_lock);
 }
 
 void
 mesh_path_tx_root_frame(struct ieee80211_sub_if_data *sdata)
 {
         struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
+        u32 interval = ifmsh->mshcfg.dot11MeshHWMPRannInterval;
+        u8 flags;
 
-        mesh_path_sel_frame_tx(MPATH_RANN, 0, sdata->vif.addr,
+        flags = (ifmsh->mshcfg.dot11MeshGateAnnouncementProtocol)
+                        ? RANN_FLAG_IS_GATE : 0;
+        mesh_path_sel_frame_tx(MPATH_RANN, flags, sdata->vif.addr,
                                cpu_to_le32(++ifmsh->sn),
                                0, NULL, 0, broadcast_addr,
                                0, sdata->u.mesh.mshcfg.element_ttl,
-                               0, 0, 0, sdata);
+                               cpu_to_le32(interval), 0, 0, sdata);
 }
diff --git a/net/mac80211/mesh_pathtbl.c b/net/mac80211/mesh_pathtbl.c
index 068ee6518254..7f54c5042235 100644
--- a/net/mac80211/mesh_pathtbl.c
+++ b/net/mac80211/mesh_pathtbl.c
@@ -14,9 +14,16 @@
 #include <linux/spinlock.h>
 #include <linux/string.h>
 #include <net/mac80211.h>
+#include "wme.h"
 #include "ieee80211_i.h"
 #include "mesh.h"
 
+#ifdef CONFIG_MAC80211_VERBOSE_MPATH_DEBUG
+#define mpath_dbg(fmt, args...) printk(KERN_DEBUG fmt, ##args)
+#else
+#define mpath_dbg(fmt, args...) do { (void)(0); } while (0)
+#endif
+
 /* There will be initially 2^INIT_PATHS_SIZE_ORDER buckets */
 #define INIT_PATHS_SIZE_ORDER   2
 
@@ -42,8 +49,10 @@ static struct mesh_table __rcu *mpp_paths; /* Store paths for MPP&MAP */
 int mesh_paths_generation;
 
 /* This lock will have the grow table function as writer and add / delete nodes
- * as readers. When reading the table (i.e. doing lookups) we are well protected
- * by RCU
+ * as readers. RCU provides sufficient protection only when reading the table
+ * (i.e. doing lookups).  Adding or adding or removing nodes requires we take
+ * the read lock or we risk operating on an old table.  The write lock is only
+ * needed when modifying the number of buckets a table.
  */
 static DEFINE_RWLOCK(pathtbl_resize_lock);
 
@@ -60,6 +69,8 @@ static inline struct mesh_table *resize_dereference_mpp_paths(void)
                 lockdep_is_held(&pathtbl_resize_lock));
 }
 
+static int mesh_gate_add(struct mesh_table *tbl, struct mesh_path *mpath);
+
 /*
  * CAREFUL -- "tbl" must not be an expression,
  * in particular not an rcu_dereference(), since
@@ -103,6 +114,7 @@ static struct mesh_table *mesh_table_alloc(int size_order)
                         sizeof(newtbl->hash_rnd));
         for (i = 0; i <= newtbl->hash_mask; i++)
                 spin_lock_init(&newtbl->hashwlock[i]);
+        spin_lock_init(&newtbl->gates_lock);
 
         return newtbl;
 }
@@ -118,6 +130,7 @@ static void mesh_table_free(struct mesh_table *tbl, bool free_leafs)
 {
         struct hlist_head *mesh_hash;
         struct hlist_node *p, *q;
+        struct mpath_node *gate;
         int i;
 
         mesh_hash = tbl->hash_buckets;
@@ -129,6 +142,17 @@ static void mesh_table_free(struct mesh_table *tbl, bool free_leafs)
                 }
                 spin_unlock_bh(&tbl->hashwlock[i]);
         }
+        if (free_leafs) {
+                spin_lock_bh(&tbl->gates_lock);
+                hlist_for_each_entry_safe(gate, p, q,
+                                         tbl->known_gates, list) {
+                        hlist_del(&gate->list);
+                        kfree(gate);
+                }
+                kfree(tbl->known_gates);
+                spin_unlock_bh(&tbl->gates_lock);
+        }
+
         __mesh_table_free(tbl);
 }
 
@@ -146,6 +170,7 @@ static int mesh_table_grow(struct mesh_table *oldtbl,
         newtbl->free_node = oldtbl->free_node;
         newtbl->mean_chain_len = oldtbl->mean_chain_len;
         newtbl->copy_node = oldtbl->copy_node;
+        newtbl->known_gates = oldtbl->known_gates;
         atomic_set(&newtbl->entries, atomic_read(&oldtbl->entries));
 
         oldhash = oldtbl->hash_buckets;
@@ -188,6 +213,7 @@ void mesh_path_assign_nexthop(struct mesh_path *mpath, struct sta_info *sta)
         struct ieee80211_hdr *hdr;
         struct sk_buff_head tmpq;
         unsigned long flags;
+        struct ieee80211_sub_if_data *sdata = mpath->sdata;
 
         rcu_assign_pointer(mpath->next_hop, sta);
 
@@ -198,6 +224,8 @@ void mesh_path_assign_nexthop(struct mesh_path *mpath, struct sta_info *sta)
         while ((skb = __skb_dequeue(&mpath->frame_queue)) != NULL) {
                 hdr = (struct ieee80211_hdr *) skb->data;
                 memcpy(hdr->addr1, sta->sta.addr, ETH_ALEN);
+                skb_set_queue_mapping(skb, ieee80211_select_queue(sdata, skb));
+                ieee80211_set_qos_hdr(sdata, skb);
                 __skb_queue_tail(&tmpq, skb);
         }
 
@@ -205,62 +233,128 @@ void mesh_path_assign_nexthop(struct mesh_path *mpath, struct sta_info *sta)
         spin_unlock_irqrestore(&mpath->frame_queue.lock, flags);
 }
 
+static void prepare_for_gate(struct sk_buff *skb, char *dst_addr,
+                             struct mesh_path *gate_mpath)
+{
+        struct ieee80211_hdr *hdr;
+        struct ieee80211s_hdr *mshdr;
+        int mesh_hdrlen, hdrlen;
+        char *next_hop;
+
+        hdr = (struct ieee80211_hdr *) skb->data;
+        hdrlen = ieee80211_hdrlen(hdr->frame_control);
+        mshdr = (struct ieee80211s_hdr *) (skb->data + hdrlen);
+
+        if (!(mshdr->flags & MESH_FLAGS_AE)) {
+                /* size of the fixed part of the mesh header */
+                mesh_hdrlen = 6;
+
+                /* make room for the two extended addresses */
+                skb_push(skb, 2 * ETH_ALEN);
+                memmove(skb->data, hdr, hdrlen + mesh_hdrlen);
+
+                hdr = (struct ieee80211_hdr *) skb->data;
+
+                /* we preserve the previous mesh header and only add
+                 * the new addreses */
+                mshdr = (struct ieee80211s_hdr *) (skb->data + hdrlen);
+                mshdr->flags = MESH_FLAGS_AE_A5_A6;
+                memcpy(mshdr->eaddr1, hdr->addr3, ETH_ALEN);
+                memcpy(mshdr->eaddr2, hdr->addr4, ETH_ALEN);
+        }
+
+        /* update next hop */
+        hdr = (struct ieee80211_hdr *) skb->data;
+        rcu_read_lock();
+        next_hop = rcu_dereference(gate_mpath->next_hop)->sta.addr;
+        memcpy(hdr->addr1, next_hop, ETH_ALEN);
+        rcu_read_unlock();
+        memcpy(hdr->addr3, dst_addr, ETH_ALEN);
+}
 
 /**
- * mesh_path_lookup - look up a path in the mesh path table
- * @dst: hardware address (ETH_ALEN length) of destination
- * @sdata: local subif
  *
- * Returns: pointer to the mesh path structure, or NULL if not found
+ * mesh_path_move_to_queue - Move or copy frames from one mpath queue to another
  *
- * Locking: must be called within a read rcu section.
+ * This function is used to transfer or copy frames from an unresolved mpath to
+ * a gate mpath.  The function also adds the Address Extension field and
+ * updates the next hop.
+ *
+ * If a frame already has an Address Extension field, only the next hop and
+ * destination addresses are updated.
+ *
+ * The gate mpath must be an active mpath with a valid mpath->next_hop.
+ *
+ * @mpath: An active mpath the frames will be sent to (i.e. the gate)
+ * @from_mpath: The failed mpath
+ * @copy: When true, copy all the frames to the new mpath queue.  When false,
+ * move them.
  */
-struct mesh_path *mesh_path_lookup(u8 *dst, struct ieee80211_sub_if_data *sdata)
+static void mesh_path_move_to_queue(struct mesh_path *gate_mpath,
+                                    struct mesh_path *from_mpath,
+                                    bool copy)
 {
-        struct mesh_path *mpath;
-        struct hlist_node *n;
-        struct hlist_head *bucket;
-        struct mesh_table *tbl;
-        struct mpath_node *node;
+        struct sk_buff *skb, *cp_skb = NULL;
+        struct sk_buff_head gateq, failq;
+        unsigned long flags;
+        int num_skbs;
 
-        tbl = rcu_dereference(mesh_paths);
+        BUG_ON(gate_mpath == from_mpath);
+        BUG_ON(!gate_mpath->next_hop);
 
-        bucket = &tbl->hash_buckets[mesh_table_hash(dst, sdata, tbl)];
-        hlist_for_each_entry_rcu(node, n, bucket, list) {
-                mpath = node->mpath;
-                if (mpath->sdata == sdata &&
-                                memcmp(dst, mpath->dst, ETH_ALEN) == 0) {
-                        if (MPATH_EXPIRED(mpath)) {
-                                spin_lock_bh(&mpath->state_lock);
-                                if (MPATH_EXPIRED(mpath))
-                                        mpath->flags &= ~MESH_PATH_ACTIVE;
-                                spin_unlock_bh(&mpath->state_lock);
-                        }
-                        return mpath;
+        __skb_queue_head_init(&gateq);
+        __skb_queue_head_init(&failq);
+
+        spin_lock_irqsave(&from_mpath->frame_queue.lock, flags);
+        skb_queue_splice_init(&from_mpath->frame_queue, &failq);
+        spin_unlock_irqrestore(&from_mpath->frame_queue.lock, flags);
+
+        num_skbs = skb_queue_len(&failq);
+
+        while (num_skbs--) {
+                skb = __skb_dequeue(&failq);
+                if (copy) {
+                        cp_skb = skb_copy(skb, GFP_ATOMIC);
+                        if (cp_skb)
+                                __skb_queue_tail(&failq, cp_skb);
                 }
+
+                prepare_for_gate(skb, gate_mpath->dst, gate_mpath);
+                __skb_queue_tail(&gateq, skb);
         }
-        return NULL;
+
+        spin_lock_irqsave(&gate_mpath->frame_queue.lock, flags);
+        skb_queue_splice(&gateq, &gate_mpath->frame_queue);
+        mpath_dbg("Mpath queue for gate %pM has %d frames\n",
+                        gate_mpath->dst,
+                        skb_queue_len(&gate_mpath->frame_queue));
+        spin_unlock_irqrestore(&gate_mpath->frame_queue.lock, flags);
+
+        if (!copy)
+                return;
+
+        spin_lock_irqsave(&from_mpath->frame_queue.lock, flags);
+        skb_queue_splice(&failq, &from_mpath->frame_queue);
+        spin_unlock_irqrestore(&from_mpath->frame_queue.lock, flags);
 }
 
-struct mesh_path *mpp_path_lookup(u8 *dst, struct ieee80211_sub_if_data *sdata)
+
+static struct mesh_path *path_lookup(struct mesh_table *tbl, u8 *dst,
+                                          struct ieee80211_sub_if_data *sdata)
 {
         struct mesh_path *mpath;
         struct hlist_node *n;
         struct hlist_head *bucket;
-        struct mesh_table *tbl;
         struct mpath_node *node;
 
-        tbl = rcu_dereference(mpp_paths);
-
         bucket = &tbl->hash_buckets[mesh_table_hash(dst, sdata, tbl)];
         hlist_for_each_entry_rcu(node, n, bucket, list) {
                 mpath = node->mpath;
                 if (mpath->sdata == sdata &&
-                    memcmp(dst, mpath->dst, ETH_ALEN) == 0) {
+                                memcmp(dst, mpath->dst, ETH_ALEN) == 0) {
                         if (MPATH_EXPIRED(mpath)) {
                                 spin_lock_bh(&mpath->state_lock);
-                                if (MPATH_EXPIRED(mpath))
-                                        mpath->flags &= ~MESH_PATH_ACTIVE;
+                                mpath->flags &= ~MESH_PATH_ACTIVE;
                                 spin_unlock_bh(&mpath->state_lock);
                         }
                         return mpath;
@@ -269,6 +363,25 @@ struct mesh_path *mpp_path_lookup(u8 *dst, struct ieee80211_sub_if_data *sdata)
         return NULL;
 }
 
+/**
+ * mesh_path_lookup - look up a path in the mesh path table
+ * @dst: hardware address (ETH_ALEN length) of destination
+ * @sdata: local subif
+ *
+ * Returns: pointer to the mesh path structure, or NULL if not found
+ *
+ * Locking: must be called within a read rcu section.
+ */
+struct mesh_path *mesh_path_lookup(u8 *dst, struct ieee80211_sub_if_data *sdata)
+{
+        return path_lookup(rcu_dereference(mesh_paths), dst, sdata);
+}
+
+struct mesh_path *mpp_path_lookup(u8 *dst, struct ieee80211_sub_if_data *sdata)
+{
+        return path_lookup(rcu_dereference(mpp_paths), dst, sdata);
+}
+
 
 /**
  * mesh_path_lookup_by_idx - look up a path in the mesh path table by its index
@@ -293,8 +406,7 @@ struct mesh_path *mesh_path_lookup_by_idx(int idx, struct ieee80211_sub_if_data
                 if (j++ == idx) {
                         if (MPATH_EXPIRED(node->mpath)) {
                                 spin_lock_bh(&node->mpath->state_lock);
-                                if (MPATH_EXPIRED(node->mpath))
-                                        node->mpath->flags &= ~MESH_PATH_ACTIVE;
+                                node->mpath->flags &= ~MESH_PATH_ACTIVE;
                                 spin_unlock_bh(&node->mpath->state_lock);
                         }
                         return node->mpath;
@@ -304,6 +416,109 @@ struct mesh_path *mesh_path_lookup_by_idx(int idx, struct ieee80211_sub_if_data
         return NULL;
 }
 
+static void mesh_gate_node_reclaim(struct rcu_head *rp)
+{
+        struct mpath_node *node = container_of(rp, struct mpath_node, rcu);
+        kfree(node);
+}
+
+/**
+ * mesh_gate_add - mark mpath as path to a mesh gate and add to known_gates
+ * @mesh_tbl: table which contains known_gates list
+ * @mpath: mpath to known mesh gate
+ *
+ * Returns: 0 on success
+ *
+ */
+static int mesh_gate_add(struct mesh_table *tbl, struct mesh_path *mpath)
+{
+        struct mpath_node *gate, *new_gate;
+        struct hlist_node *n;
+        int err;
+
+        rcu_read_lock();
+        tbl = rcu_dereference(tbl);
+
+        hlist_for_each_entry_rcu(gate, n, tbl->known_gates, list)
+                if (gate->mpath == mpath) {
+                        err = -EEXIST;
+                        goto err_rcu;
+                }
+
+        new_gate = kzalloc(sizeof(struct mpath_node), GFP_ATOMIC);
+        if (!new_gate) {
+                err = -ENOMEM;
+                goto err_rcu;
+        }
+
+        mpath->is_gate = true;
+        mpath->sdata->u.mesh.num_gates++;
+        new_gate->mpath = mpath;
+        spin_lock_bh(&tbl->gates_lock);
+        hlist_add_head_rcu(&new_gate->list, tbl->known_gates);
+        spin_unlock_bh(&tbl->gates_lock);
+        rcu_read_unlock();
+        mpath_dbg("Mesh path (%s): Recorded new gate: %pM. %d known gates\n",
+                  mpath->sdata->name, mpath->dst,
+                  mpath->sdata->u.mesh.num_gates);
+        return 0;
+err_rcu:
+        rcu_read_unlock();
+        return err;
+}
+
+/**
+ * mesh_gate_del - remove a mesh gate from the list of known gates
+ * @tbl: table which holds our list of known gates
+ * @mpath: gate mpath
+ *
+ * Returns: 0 on success
+ *
+ * Locking: must be called inside rcu_read_lock() section
+ */
+static int mesh_gate_del(struct mesh_table *tbl, struct mesh_path *mpath)
+{
+        struct mpath_node *gate;
+        struct hlist_node *p, *q;
+
+        tbl = rcu_dereference(tbl);
+
+        hlist_for_each_entry_safe(gate, p, q, tbl->known_gates, list)
+                if (gate->mpath == mpath) {
+                        spin_lock_bh(&tbl->gates_lock);
+                        hlist_del_rcu(&gate->list);
+                        call_rcu(&gate->rcu, mesh_gate_node_reclaim);
+                        spin_unlock_bh(&tbl->gates_lock);
+                        mpath->sdata->u.mesh.num_gates--;
+                        mpath->is_gate = false;
+                        mpath_dbg("Mesh path (%s): Deleted gate: %pM. "
+                                  "%d known gates\n", mpath->sdata->name,
+                                  mpath->dst, mpath->sdata->u.mesh.num_gates);
+                        break;
+                }
+
+        return 0;
+}
+
+/**
+ *
+ * mesh_path_add_gate - add the given mpath to a mesh gate to our path table
+ * @mpath: gate path to add to table
+ */
+int mesh_path_add_gate(struct mesh_path *mpath)
+{
+        return mesh_gate_add(mesh_paths, mpath);
+}
+
+/**
+ * mesh_gate_num - number of gates known to this interface
+ * @sdata: subif data
+ */
+int mesh_gate_num(struct ieee80211_sub_if_data *sdata)
+{
+        return sdata->u.mesh.num_gates;
+}
+
 /**
  * mesh_path_add - allocate and add a new path to the mesh path table
  * @addr: destination address of the path (ETH_ALEN length)
@@ -481,6 +696,7 @@ int mpp_path_add(u8 *dst, u8 *mpp, struct ieee80211_sub_if_data *sdata)
         new_mpath->flags = 0;
         skb_queue_head_init(&new_mpath->frame_queue);
         new_node->mpath = new_mpath;
+        init_timer(&new_mpath->timer);
         new_mpath->exp_time = jiffies;
         spin_lock_init(&new_mpath->state_lock);
 
@@ -539,28 +755,53 @@ void mesh_plink_broken(struct sta_info *sta)
         struct hlist_node *p;
         struct ieee80211_sub_if_data *sdata = sta->sdata;
         int i;
+        __le16 reason = cpu_to_le16(WLAN_REASON_MESH_PATH_DEST_UNREACHABLE);
 
         rcu_read_lock();
         tbl = rcu_dereference(mesh_paths);
         for_each_mesh_entry(tbl, p, node, i) {
                 mpath = node->mpath;
-                spin_lock_bh(&mpath->state_lock);
                 if (rcu_dereference(mpath->next_hop) == sta &&
                     mpath->flags & MESH_PATH_ACTIVE &&
                     !(mpath->flags & MESH_PATH_FIXED)) {
+                        spin_lock_bh(&mpath->state_lock);
                         mpath->flags &= ~MESH_PATH_ACTIVE;
                         ++mpath->sn;
                         spin_unlock_bh(&mpath->state_lock);
                         mesh_path_error_tx(sdata->u.mesh.mshcfg.element_ttl,
                                         mpath->dst, cpu_to_le32(mpath->sn),
-                                        cpu_to_le16(PERR_RCODE_DEST_UNREACH),
-                                        bcast, sdata);
-                } else
-                spin_unlock_bh(&mpath->state_lock);
+                                        reason, bcast, sdata);
+                }
         }
         rcu_read_unlock();
 }
 
+static void mesh_path_node_reclaim(struct rcu_head *rp)
+{
+        struct mpath_node *node = container_of(rp, struct mpath_node, rcu);
+        struct ieee80211_sub_if_data *sdata = node->mpath->sdata;
+
+        del_timer_sync(&node->mpath->timer);
+        atomic_dec(&sdata->u.mesh.mpaths);
+        kfree(node->mpath);
+        kfree(node);
+}
+
+/* needs to be called with the corresponding hashwlock taken */
+static void __mesh_path_del(struct mesh_table *tbl, struct mpath_node *node)
+{
+        struct mesh_path *mpath;
+        mpath = node->mpath;
+        spin_lock(&mpath->state_lock);
+        mpath->flags |= MESH_PATH_RESOLVING;
+        if (mpath->is_gate)
+                mesh_gate_del(tbl, mpath);
+        hlist_del_rcu(&node->list);
+        call_rcu(&node->rcu, mesh_path_node_reclaim);
+        spin_unlock(&mpath->state_lock);
+        atomic_dec(&tbl->entries);
+}
+
 /**
  * mesh_path_flush_by_nexthop - Deletes mesh paths if their next hop matches
  *
@@ -581,42 +822,59 @@ void mesh_path_flush_by_nexthop(struct sta_info *sta)
         int i;
 
         rcu_read_lock();
-        tbl = rcu_dereference(mesh_paths);
+        read_lock_bh(&pathtbl_resize_lock);
+        tbl = resize_dereference_mesh_paths();
         for_each_mesh_entry(tbl, p, node, i) {
                 mpath = node->mpath;
-                if (rcu_dereference(mpath->next_hop) == sta)
-                        mesh_path_del(mpath->dst, mpath->sdata);
+                if (rcu_dereference(mpath->next_hop) == sta) {
+                        spin_lock_bh(&tbl->hashwlock[i]);
+                        __mesh_path_del(tbl, node);
+                        spin_unlock_bh(&tbl->hashwlock[i]);
+                }
         }
+        read_unlock_bh(&pathtbl_resize_lock);
         rcu_read_unlock();
 }
 
-void mesh_path_flush(struct ieee80211_sub_if_data *sdata)
+static void table_flush_by_iface(struct mesh_table *tbl,
+                                 struct ieee80211_sub_if_data *sdata)
 {
-        struct mesh_table *tbl;
         struct mesh_path *mpath;
         struct mpath_node *node;
         struct hlist_node *p;
         int i;
 
-        rcu_read_lock();
-        tbl = rcu_dereference(mesh_paths);
+        WARN_ON(!rcu_read_lock_held());
         for_each_mesh_entry(tbl, p, node, i) {
                 mpath = node->mpath;
-                if (mpath->sdata == sdata)
-                        mesh_path_del(mpath->dst, mpath->sdata);
+                if (mpath->sdata != sdata)
+                        continue;
+                spin_lock_bh(&tbl->hashwlock[i]);
+                __mesh_path_del(tbl, node);
+                spin_unlock_bh(&tbl->hashwlock[i]);
         }
-        rcu_read_unlock();
 }
 
-static void mesh_path_node_reclaim(struct rcu_head *rp)
+/**
+ * mesh_path_flush_by_iface - Deletes all mesh paths associated with a given iface
+ *
+ * This function deletes both mesh paths as well as mesh portal paths.
+ *
+ * @sdata - interface data to match
+ *
+ */
+void mesh_path_flush_by_iface(struct ieee80211_sub_if_data *sdata)
 {
-        struct mpath_node *node = container_of(rp, struct mpath_node, rcu);
-        struct ieee80211_sub_if_data *sdata = node->mpath->sdata;
+        struct mesh_table *tbl;
 
-        del_timer_sync(&node->mpath->timer);
-        atomic_dec(&sdata->u.mesh.mpaths);
-        kfree(node->mpath);
-        kfree(node);
+        rcu_read_lock();
+        read_lock_bh(&pathtbl_resize_lock);
+        tbl = resize_dereference_mesh_paths();
+        table_flush_by_iface(tbl, sdata);
+        tbl = resize_dereference_mpp_paths();
+        table_flush_by_iface(tbl, sdata);
+        read_unlock_bh(&pathtbl_resize_lock);
+        rcu_read_unlock();
 }
 
 /**
@@ -647,12 +905,7 @@ int mesh_path_del(u8 *addr, struct ieee80211_sub_if_data *sdata)
                 mpath = node->mpath;
                 if (mpath->sdata == sdata &&
                     memcmp(addr, mpath->dst, ETH_ALEN) == 0) {
-                        spin_lock(&mpath->state_lock);
-                        mpath->flags |= MESH_PATH_RESOLVING;
-                        hlist_del_rcu(&node->list);
-                        call_rcu(&node->rcu, mesh_path_node_reclaim);
-                        atomic_dec(&tbl->entries);
-                        spin_unlock(&mpath->state_lock);
+                        __mesh_path_del(tbl, node);
                         goto enddel;
                 }
         }
@@ -681,6 +934,58 @@ void mesh_path_tx_pending(struct mesh_path *mpath)
 }
 
 /**
+ * mesh_path_send_to_gates - sends pending frames to all known mesh gates
+ *
+ * @mpath: mesh path whose queue will be emptied
+ *
+ * If there is only one gate, the frames are transferred from the failed mpath
+ * queue to that gate's queue.  If there are more than one gates, the frames
+ * are copied from each gate to the next.  After frames are copied, the
+ * mpath queues are emptied onto the transmission queue.
+ */
+int mesh_path_send_to_gates(struct mesh_path *mpath)
+{
+        struct ieee80211_sub_if_data *sdata = mpath->sdata;
+        struct hlist_node *n;
+        struct mesh_table *tbl;
+        struct mesh_path *from_mpath = mpath;
+        struct mpath_node *gate = NULL;
+        bool copy = false;
+        struct hlist_head *known_gates;
+
+        rcu_read_lock();
+        tbl = rcu_dereference(mesh_paths);
+        known_gates = tbl->known_gates;
+        rcu_read_unlock();
+
+        if (!known_gates)
+                return -EHOSTUNREACH;
+
+        hlist_for_each_entry_rcu(gate, n, known_gates, list) {
+                if (gate->mpath->sdata != sdata)
+                        continue;
+
+                if (gate->mpath->flags & MESH_PATH_ACTIVE) {
+                        mpath_dbg("Forwarding to %pM\n", gate->mpath->dst);
+                        mesh_path_move_to_queue(gate->mpath, from_mpath, copy);
+                        from_mpath = gate->mpath;
+                        copy = true;
+                } else {
+                        mpath_dbg("Not forwarding %p\n", gate->mpath);
+                        mpath_dbg("flags %x\n", gate->mpath->flags);
+                }
+        }
+
+        hlist_for_each_entry_rcu(gate, n, known_gates, list)
+                if (gate->mpath->sdata == sdata) {
+                        mpath_dbg("Sending to %pM\n", gate->mpath->dst);
+                        mesh_path_tx_pending(gate->mpath);
+                }
+
+        return (from_mpath == mpath) ? -EHOSTUNREACH : 0;
+}
+
+/**
  * mesh_path_discard_frame - discard a frame whose path could not be resolved
  *
  * @skb: frame to discard
@@ -699,18 +1004,23 @@ void mesh_path_discard_frame(struct sk_buff *skb,
         struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
         struct mesh_path *mpath;
         u32 sn = 0;
+        __le16 reason = cpu_to_le16(WLAN_REASON_MESH_PATH_NOFORWARD);
 
         if (memcmp(hdr->addr4, sdata->vif.addr, ETH_ALEN) != 0) {
                 u8 *ra, *da;
 
                 da = hdr->addr3;
                 ra = hdr->addr1;
+                rcu_read_lock();
                 mpath = mesh_path_lookup(da, sdata);
-                if (mpath)
+                if (mpath) {
+                        spin_lock_bh(&mpath->state_lock);
                         sn = ++mpath->sn;
+                        spin_unlock_bh(&mpath->state_lock);
+                }
+                rcu_read_unlock();
                 mesh_path_error_tx(sdata->u.mesh.mshcfg.element_ttl, skb->data,
-                                   cpu_to_le32(sn),
-                                   cpu_to_le16(PERR_RCODE_NO_ROUTE), ra, sdata);
+                                   cpu_to_le32(sn), reason, ra, sdata);
         }
 
         kfree_skb(skb);
@@ -728,8 +1038,7 @@ void mesh_path_flush_pending(struct mesh_path *mpath)
 {
         struct sk_buff *skb;
 
-        while ((skb = skb_dequeue(&mpath->frame_queue)) &&
-                        (mpath->flags & MESH_PATH_ACTIVE))
+        while ((skb = skb_dequeue(&mpath->frame_queue)) != NULL)
                 mesh_path_discard_frame(skb, mpath->sdata);
 }
 
@@ -790,6 +1099,7 @@ static int mesh_path_node_copy(struct hlist_node *p, struct mesh_table *newtbl)
 int mesh_pathtbl_init(void)
 {
         struct mesh_table *tbl_path, *tbl_mpp;
+        int ret;
 
         tbl_path = mesh_table_alloc(INIT_PATHS_SIZE_ORDER);
         if (!tbl_path)
@@ -797,21 +1107,40 @@ int mesh_pathtbl_init(void)
         tbl_path->free_node = &mesh_path_node_free;
         tbl_path->copy_node = &mesh_path_node_copy;
         tbl_path->mean_chain_len = MEAN_CHAIN_LEN;
+        tbl_path->known_gates = kzalloc(sizeof(struct hlist_head), GFP_ATOMIC);
+        if (!tbl_path->known_gates) {
+                ret = -ENOMEM;
+                goto free_path;
+        }
+        INIT_HLIST_HEAD(tbl_path->known_gates);
+
 
         tbl_mpp = mesh_table_alloc(INIT_PATHS_SIZE_ORDER);
         if (!tbl_mpp) {
-                mesh_table_free(tbl_path, true);
-                return -ENOMEM;
+                ret = -ENOMEM;
+                goto free_path;
         }
         tbl_mpp->free_node = &mesh_path_node_free;
         tbl_mpp->copy_node = &mesh_path_node_copy;
         tbl_mpp->mean_chain_len = MEAN_CHAIN_LEN;
+        tbl_mpp->known_gates = kzalloc(sizeof(struct hlist_head), GFP_ATOMIC);
+        if (!tbl_mpp->known_gates) {
+                ret = -ENOMEM;
+                goto free_mpp;
+        }
+        INIT_HLIST_HEAD(tbl_mpp->known_gates);
 
         /* Need no locking since this is during init */
         RCU_INIT_POINTER(mesh_paths, tbl_path);
         RCU_INIT_POINTER(mpp_paths, tbl_mpp);
 
         return 0;
+
+free_mpp:
+        mesh_table_free(tbl_mpp, true);
+free_path:
+        mesh_table_free(tbl_path, true);
+        return ret;
 }
 
 void mesh_path_expire(struct ieee80211_sub_if_data *sdata)
@@ -828,14 +1157,10 @@ void mesh_path_expire(struct ieee80211_sub_if_data *sdata)
                 if (node->mpath->sdata != sdata)
                         continue;
                 mpath = node->mpath;
-                spin_lock_bh(&mpath->state_lock);
                 if ((!(mpath->flags & MESH_PATH_RESOLVING)) &&
                     (!(mpath->flags & MESH_PATH_FIXED)) &&
-                     time_after(jiffies, mpath->exp_time + MESH_PATH_EXPIRE)) {
-                        spin_unlock_bh(&mpath->state_lock);
+                     time_after(jiffies, mpath->exp_time + MESH_PATH_EXPIRE))
                         mesh_path_del(mpath->dst, mpath->sdata);
-                } else
-                        spin_unlock_bh(&mpath->state_lock);
         }
         rcu_read_unlock();
 }
@@ -843,6 +1168,6 @@ void mesh_path_expire(struct ieee80211_sub_if_data *sdata)
 void mesh_pathtbl_unregister(void)
 {
         /* no need for locking during exit path */
-        mesh_table_free(rcu_dereference_raw(mesh_paths), true);
-        mesh_table_free(rcu_dereference_raw(mpp_paths), true);
+        mesh_table_free(rcu_dereference_protected(mesh_paths, 1), true);
+        mesh_table_free(rcu_dereference_protected(mpp_paths, 1), true);
 }
diff --git a/net/mac80211/mesh_plink.c b/net/mac80211/mesh_plink.c
index f4adc0917888..7e57f5d07f66 100644
--- a/net/mac80211/mesh_plink.c
+++ b/net/mac80211/mesh_plink.c
@@ -19,35 +19,18 @@
 #define mpl_dbg(fmt, args...)   do { (void)(0); } while (0)
 #endif
 
-#define PLINK_GET_LLID(p) (p + 4)
-#define PLINK_GET_PLID(p) (p + 6)
+#define PLINK_GET_LLID(p) (p + 2)
+#define PLINK_GET_PLID(p) (p + 4)
 
 #define mod_plink_timer(s, t) (mod_timer(&s->plink_timer, \
                                 jiffies + HZ * t / 1000))
 
-/* Peer link cancel reasons, all subject to ANA approval */
-#define MESH_LINK_CANCELLED                     2
-#define MESH_MAX_NEIGHBORS                      3
-#define MESH_CAPABILITY_POLICY_VIOLATION        4
-#define MESH_CLOSE_RCVD                         5
-#define MESH_MAX_RETRIES                        6
-#define MESH_CONFIRM_TIMEOUT                    7
-#define MESH_SECURITY_ROLE_NEGOTIATION_DIFFERS  8
-#define MESH_SECURITY_AUTHENTICATION_IMPOSSIBLE 9
-#define MESH_SECURITY_FAILED_VERIFICATION       10
-
 #define dot11MeshMaxRetries(s) (s->u.mesh.mshcfg.dot11MeshMaxRetries)
 #define dot11MeshRetryTimeout(s) (s->u.mesh.mshcfg.dot11MeshRetryTimeout)
 #define dot11MeshConfirmTimeout(s) (s->u.mesh.mshcfg.dot11MeshConfirmTimeout)
 #define dot11MeshHoldingTimeout(s) (s->u.mesh.mshcfg.dot11MeshHoldingTimeout)
 #define dot11MeshMaxPeerLinks(s) (s->u.mesh.mshcfg.dot11MeshMaxPeerLinks)
 
-enum plink_frame_type {
-        PLINK_OPEN = 1,
-        PLINK_CONFIRM,
-        PLINK_CLOSE
-};
-
 enum plink_event {
         PLINK_UNDEFINED,
         OPN_ACPT,
@@ -60,6 +43,10 @@ enum plink_event {
         CLS_IGNR
 };
 
+static int mesh_plink_frame_tx(struct ieee80211_sub_if_data *sdata,
+                enum ieee80211_self_protected_actioncode action,
+                u8 *da, __le16 llid, __le16 plid, __le16 reason);
+
 static inline
 void mesh_plink_inc_estab_count(struct ieee80211_sub_if_data *sdata)
 {
@@ -105,7 +92,9 @@ static struct sta_info *mesh_plink_alloc(struct ieee80211_sub_if_data *sdata,
         if (!sta)
                 return NULL;
 
-        sta->flags = WLAN_STA_AUTHORIZED | WLAN_STA_AUTH;
+        set_sta_flag(sta, WLAN_STA_AUTH);
+        set_sta_flag(sta, WLAN_STA_AUTHORIZED);
+        set_sta_flag(sta, WLAN_STA_WME);
         sta->sta.supp_rates[local->hw.conf.channel->band] = rates;
         rate_control_rate_init(sta);
 
@@ -150,6 +139,10 @@ void mesh_plink_deactivate(struct sta_info *sta)
 
         spin_lock_bh(&sta->lock);
         deactivated = __mesh_plink_deactivate(sta);
+        sta->reason = cpu_to_le16(WLAN_REASON_MESH_PEER_CANCELED);
+        mesh_plink_frame_tx(sdata, WLAN_SP_MESH_PEERING_CLOSE,
+                            sta->sta.addr, sta->llid, sta->plid,
+                            sta->reason);
         spin_unlock_bh(&sta->lock);
 
         if (deactivated)
@@ -157,16 +150,16 @@ void mesh_plink_deactivate(struct sta_info *sta)
 }
 
 static int mesh_plink_frame_tx(struct ieee80211_sub_if_data *sdata,
-                enum plink_frame_type action, u8 *da, __le16 llid, __le16 plid,
-                __le16 reason) {
+                enum ieee80211_self_protected_actioncode action,
+                u8 *da, __le16 llid, __le16 plid, __le16 reason) {
         struct ieee80211_local *local = sdata->local;
         struct sk_buff *skb = dev_alloc_skb(local->hw.extra_tx_headroom + 400 +
                         sdata->u.mesh.ie_len);
         struct ieee80211_mgmt *mgmt;
         bool include_plid = false;
-        static const u8 meshpeeringproto[] = { 0x00, 0x0F, 0xAC, 0x2A };
+        int ie_len = 4;
+        u16 peering_proto = 0;
         u8 *pos;
-        int ie_len;
 
         if (!skb)
                 return -1;
@@ -175,63 +168,75 @@ static int mesh_plink_frame_tx(struct ieee80211_sub_if_data *sdata,
          * common action part (1)
          */
         mgmt = (struct ieee80211_mgmt *)
-                skb_put(skb, 25 + sizeof(mgmt->u.action.u.plink_action));
-        memset(mgmt, 0, 25 + sizeof(mgmt->u.action.u.plink_action));
+                skb_put(skb, 25 + sizeof(mgmt->u.action.u.self_prot));
+        memset(mgmt, 0, 25 + sizeof(mgmt->u.action.u.self_prot));
         mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT |
                                           IEEE80211_STYPE_ACTION);
         memcpy(mgmt->da, da, ETH_ALEN);
         memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN);
         memcpy(mgmt->bssid, sdata->vif.addr, ETH_ALEN);
-        mgmt->u.action.category = WLAN_CATEGORY_MESH_ACTION;
-        mgmt->u.action.u.plink_action.action_code = action;
-
-        if (action == PLINK_CLOSE)
-                mgmt->u.action.u.plink_action.aux = reason;
-        else {
-                mgmt->u.action.u.plink_action.aux = cpu_to_le16(0x0);
-                if (action == PLINK_CONFIRM) {
-                        pos = skb_put(skb, 4);
-                        /* two-byte status code followed by two-byte AID */
-                        memset(pos, 0, 2);
+        mgmt->u.action.category = WLAN_CATEGORY_SELF_PROTECTED;
+        mgmt->u.action.u.self_prot.action_code = action;
+
+        if (action != WLAN_SP_MESH_PEERING_CLOSE) {
+                /* capability info */
+                pos = skb_put(skb, 2);
+                memset(pos, 0, 2);
+                if (action == WLAN_SP_MESH_PEERING_CONFIRM) {
+                        /* AID */
+                        pos = skb_put(skb, 2);
                         memcpy(pos + 2, &plid, 2);
                 }
-                mesh_mgmt_ies_add(skb, sdata);
+                if (ieee80211_add_srates_ie(&sdata->vif, skb) ||
+                    ieee80211_add_ext_srates_ie(&sdata->vif, skb) ||
+                    mesh_add_rsn_ie(skb, sdata) ||
+                    mesh_add_meshid_ie(skb, sdata) ||
+                    mesh_add_meshconf_ie(skb, sdata))
+                        return -1;
+        } else {        /* WLAN_SP_MESH_PEERING_CLOSE */
+                if (mesh_add_meshid_ie(skb, sdata))
+                        return -1;
         }
 
-        /* Add Peer Link Management element */
+        /* Add Mesh Peering Management element */
         switch (action) {
-        case PLINK_OPEN:
-                ie_len = 6;
+        case WLAN_SP_MESH_PEERING_OPEN:
                 break;
-        case PLINK_CONFIRM:
-                ie_len = 8;
+        case WLAN_SP_MESH_PEERING_CONFIRM:
+                ie_len += 2;
                 include_plid = true;
                 break;
-        case PLINK_CLOSE:
-        default:
-                if (!plid)
-                        ie_len = 8;
-                else {
-                        ie_len = 10;
+        case WLAN_SP_MESH_PEERING_CLOSE:
+                if (plid) {
+                        ie_len += 2;
                         include_plid = true;
                 }
+                ie_len += 2;    /* reason code */
                 break;
+        default:
+                return -EINVAL;
         }
 
+        if (WARN_ON(skb_tailroom(skb) < 2 + ie_len))
+                return -ENOMEM;
+
         pos = skb_put(skb, 2 + ie_len);
-        *pos++ = WLAN_EID_PEER_LINK;
+        *pos++ = WLAN_EID_PEER_MGMT;
         *pos++ = ie_len;
-        memcpy(pos, meshpeeringproto, sizeof(meshpeeringproto));
-        pos += 4;
+        memcpy(pos, &peering_proto, 2);
+        pos += 2;
         memcpy(pos, &llid, 2);
+        pos += 2;
         if (include_plid) {
-                pos += 2;
                 memcpy(pos, &plid, 2);
-        }
-        if (action == PLINK_CLOSE) {
                 pos += 2;
+        }
+        if (action == WLAN_SP_MESH_PEERING_CLOSE) {
                 memcpy(pos, &reason, 2);
+                pos += 2;
         }
+        if (mesh_add_vendor_ies(skb, sdata))
+                return -1;
 
         ieee80211_tx_skb(sdata, skb);
         return 0;
@@ -322,21 +327,21 @@ static void mesh_plink_timer(unsigned long data)
                         ++sta->plink_retries;
                         mod_plink_timer(sta, sta->plink_timeout);
                         spin_unlock_bh(&sta->lock);
-                        mesh_plink_frame_tx(sdata, PLINK_OPEN, sta->sta.addr, llid,
-                                            0, 0);
+                        mesh_plink_frame_tx(sdata, WLAN_SP_MESH_PEERING_OPEN,
+                                            sta->sta.addr, llid, 0, 0);
                         break;
                 }
-                reason = cpu_to_le16(MESH_MAX_RETRIES);
+                reason = cpu_to_le16(WLAN_REASON_MESH_MAX_RETRIES);
                 /* fall through on else */
         case NL80211_PLINK_CNF_RCVD:
                 /* confirm timer */
                 if (!reason)
-                        reason = cpu_to_le16(MESH_CONFIRM_TIMEOUT);
+                        reason = cpu_to_le16(WLAN_REASON_MESH_CONFIRM_TIMEOUT);
                 sta->plink_state = NL80211_PLINK_HOLDING;
                 mod_plink_timer(sta, dot11MeshHoldingTimeout(sdata));
                 spin_unlock_bh(&sta->lock);
-                mesh_plink_frame_tx(sdata, PLINK_CLOSE, sta->sta.addr, llid, plid,
-                                    reason);
+                mesh_plink_frame_tx(sdata, WLAN_SP_MESH_PEERING_CLOSE,
+                                    sta->sta.addr, llid, plid, reason);
                 break;
         case NL80211_PLINK_HOLDING:
                 /* holding timer */
@@ -380,7 +385,7 @@ int mesh_plink_open(struct sta_info *sta)
         __le16 llid;
         struct ieee80211_sub_if_data *sdata = sta->sdata;
 
-        if (!test_sta_flags(sta, WLAN_STA_AUTH))
+        if (!test_sta_flag(sta, WLAN_STA_AUTH))
                 return -EPERM;
 
         spin_lock_bh(&sta->lock);
@@ -396,7 +401,7 @@ int mesh_plink_open(struct sta_info *sta)
         mpl_dbg("Mesh plink: starting establishment with %pM\n",
                 sta->sta.addr);
 
-        return mesh_plink_frame_tx(sdata, PLINK_OPEN,
+        return mesh_plink_frame_tx(sdata, WLAN_SP_MESH_PEERING_OPEN,
                                    sta->sta.addr, llid, 0, 0);
 }
 
@@ -422,7 +427,7 @@ void mesh_rx_plink_frame(struct ieee80211_sub_if_data *sdata, struct ieee80211_m
         struct ieee802_11_elems elems;
         struct sta_info *sta;
         enum plink_event event;
-        enum plink_frame_type ftype;
+        enum ieee80211_self_protected_actioncode ftype;
         size_t baselen;
         bool deactivated, matches_local = true;
         u8 ie_len;
@@ -449,14 +454,15 @@ void mesh_rx_plink_frame(struct ieee80211_sub_if_data *sdata, struct ieee80211_m
                 return;
         }
 
-        baseaddr = mgmt->u.action.u.plink_action.variable;
-        baselen = (u8 *) mgmt->u.action.u.plink_action.variable - (u8 *) mgmt;
-        if (mgmt->u.action.u.plink_action.action_code == PLINK_CONFIRM) {
+        baseaddr = mgmt->u.action.u.self_prot.variable;
+        baselen = (u8 *) mgmt->u.action.u.self_prot.variable - (u8 *) mgmt;
+        if (mgmt->u.action.u.self_prot.action_code ==
+                                                WLAN_SP_MESH_PEERING_CONFIRM) {
                 baseaddr += 4;
                 baselen += 4;
         }
         ieee802_11_parse_elems(baseaddr, len - baselen, &elems);
-        if (!elems.peer_link) {
+        if (!elems.peering) {
                 mpl_dbg("Mesh plink: missing necessary peer link ie\n");
                 return;
         }
@@ -466,37 +472,40 @@ void mesh_rx_plink_frame(struct ieee80211_sub_if_data *sdata, struct ieee80211_m
                 return;
         }
 
-        ftype = mgmt->u.action.u.plink_action.action_code;
-        ie_len = elems.peer_link_len;
-        if ((ftype == PLINK_OPEN && ie_len != 6) ||
-            (ftype == PLINK_CONFIRM && ie_len != 8) ||
-            (ftype == PLINK_CLOSE && ie_len != 8 && ie_len != 10)) {
+        ftype = mgmt->u.action.u.self_prot.action_code;
+        ie_len = elems.peering_len;
+        if ((ftype == WLAN_SP_MESH_PEERING_OPEN && ie_len != 4) ||
+            (ftype == WLAN_SP_MESH_PEERING_CONFIRM && ie_len != 6) ||
+            (ftype == WLAN_SP_MESH_PEERING_CLOSE && ie_len != 6
+                                                        && ie_len != 8)) {
                 mpl_dbg("Mesh plink: incorrect plink ie length %d %d\n",
                     ftype, ie_len);
                 return;
         }
 
-        if (ftype != PLINK_CLOSE && (!elems.mesh_id || !elems.mesh_config)) {
+        if (ftype != WLAN_SP_MESH_PEERING_CLOSE &&
+                                (!elems.mesh_id || !elems.mesh_config)) {
                 mpl_dbg("Mesh plink: missing necessary ie\n");
                 return;
         }
         /* Note the lines below are correct, the llid in the frame is the plid
          * from the point of view of this host.
          */
-        memcpy(&plid, PLINK_GET_LLID(elems.peer_link), 2);
-        if (ftype == PLINK_CONFIRM || (ftype == PLINK_CLOSE && ie_len == 10))
-                memcpy(&llid, PLINK_GET_PLID(elems.peer_link), 2);
+        memcpy(&plid, PLINK_GET_LLID(elems.peering), 2);
+        if (ftype == WLAN_SP_MESH_PEERING_CONFIRM ||
+            (ftype == WLAN_SP_MESH_PEERING_CLOSE && ie_len == 8))
+                memcpy(&llid, PLINK_GET_PLID(elems.peering), 2);
 
         rcu_read_lock();
 
         sta = sta_info_get(sdata, mgmt->sa);
-        if (!sta && ftype != PLINK_OPEN) {
+        if (!sta && ftype != WLAN_SP_MESH_PEERING_OPEN) {
                 mpl_dbg("Mesh plink: cls or cnf from unknown peer\n");
                 rcu_read_unlock();
                 return;
         }
 
-        if (sta && !test_sta_flags(sta, WLAN_STA_AUTH)) {
+        if (sta && !test_sta_flag(sta, WLAN_STA_AUTH)) {
                 mpl_dbg("Mesh plink: Action frame from non-authed peer\n");
                 rcu_read_unlock();
                 return;
@@ -509,30 +518,30 @@ void mesh_rx_plink_frame(struct ieee80211_sub_if_data *sdata, struct ieee80211_m
 
         /* Now we will figure out the appropriate event... */
         event = PLINK_UNDEFINED;
-        if (ftype != PLINK_CLOSE && (!mesh_matches_local(&elems, sdata))) {
+        if (ftype != WLAN_SP_MESH_PEERING_CLOSE &&
+            (!mesh_matches_local(&elems, sdata))) {
                 matches_local = false;
                 switch (ftype) {
-                case PLINK_OPEN:
+                case WLAN_SP_MESH_PEERING_OPEN:
                         event = OPN_RJCT;
                         break;
-                case PLINK_CONFIRM:
+                case WLAN_SP_MESH_PEERING_CONFIRM:
                         event = CNF_RJCT;
                         break;
-                case PLINK_CLOSE:
-                        /* avoid warning */
+                default:
                         break;
                 }
         }
 
         if (!sta && !matches_local) {
                 rcu_read_unlock();
-                reason = cpu_to_le16(MESH_CAPABILITY_POLICY_VIOLATION);
+                reason = cpu_to_le16(WLAN_REASON_MESH_CONFIG);
                 llid = 0;
-                mesh_plink_frame_tx(sdata, PLINK_CLOSE, mgmt->sa, llid,
-                                    plid, reason);
+                mesh_plink_frame_tx(sdata, WLAN_SP_MESH_PEERING_CLOSE,
+                                    mgmt->sa, llid, plid, reason);
                 return;
         } else if (!sta) {
-                /* ftype == PLINK_OPEN */
+                /* ftype == WLAN_SP_MESH_PEERING_OPEN */
                 u32 rates;
 
                 rcu_read_unlock();
@@ -557,21 +566,21 @@ void mesh_rx_plink_frame(struct ieee80211_sub_if_data *sdata, struct ieee80211_m
         } else if (matches_local) {
                 spin_lock_bh(&sta->lock);
                 switch (ftype) {
-                case PLINK_OPEN:
+                case WLAN_SP_MESH_PEERING_OPEN:
                         if (!mesh_plink_free_count(sdata) ||
                             (sta->plid && sta->plid != plid))
                                 event = OPN_IGNR;
                         else
                                 event = OPN_ACPT;
                         break;
-                case PLINK_CONFIRM:
+                case WLAN_SP_MESH_PEERING_CONFIRM:
                         if (!mesh_plink_free_count(sdata) ||
                             (sta->llid != llid || sta->plid != plid))
                                 event = CNF_IGNR;
                         else
                                 event = CNF_ACPT;
                         break;
-                case PLINK_CLOSE:
+                case WLAN_SP_MESH_PEERING_CLOSE:
                         if (sta->plink_state == NL80211_PLINK_ESTAB)
                                 /* Do not check for llid or plid. This does not
                                  * follow the standard but since multiple plinks
@@ -620,10 +629,12 @@ void mesh_rx_plink_frame(struct ieee80211_sub_if_data *sdata, struct ieee80211_m
                         sta->llid = llid;
                         mesh_plink_timer_set(sta, dot11MeshRetryTimeout(sdata));
                         spin_unlock_bh(&sta->lock);
-                        mesh_plink_frame_tx(sdata, PLINK_OPEN, sta->sta.addr, llid,
-                                            0, 0);
-                        mesh_plink_frame_tx(sdata, PLINK_CONFIRM, sta->sta.addr,
-                                            llid, plid, 0);
+                        mesh_plink_frame_tx(sdata,
+                                            WLAN_SP_MESH_PEERING_OPEN,
+                                            sta->sta.addr, llid, 0, 0);
+                        mesh_plink_frame_tx(sdata,
+                                            WLAN_SP_MESH_PEERING_CONFIRM,
+                                            sta->sta.addr, llid, plid, 0);
                         break;
                 default:
                         spin_unlock_bh(&sta->lock);
@@ -635,10 +646,10 @@ void mesh_rx_plink_frame(struct ieee80211_sub_if_data *sdata, struct ieee80211_m
                 switch (event) {
                 case OPN_RJCT:
                 case CNF_RJCT:
-                        reason = cpu_to_le16(MESH_CAPABILITY_POLICY_VIOLATION);
+                        reason = cpu_to_le16(WLAN_REASON_MESH_CONFIG);
                 case CLS_ACPT:
                         if (!reason)
-                                reason = cpu_to_le16(MESH_CLOSE_RCVD);
+                                reason = cpu_to_le16(WLAN_REASON_MESH_CLOSE);
                         sta->reason = reason;
                         sta->plink_state = NL80211_PLINK_HOLDING;
                         if (!mod_plink_timer(sta,
@@ -647,8 +658,9 @@ void mesh_rx_plink_frame(struct ieee80211_sub_if_data *sdata, struct ieee80211_m
 
                         llid = sta->llid;
                         spin_unlock_bh(&sta->lock);
-                        mesh_plink_frame_tx(sdata, PLINK_CLOSE, sta->sta.addr, llid,
-                                            plid, reason);
+                        mesh_plink_frame_tx(sdata,
+                                            WLAN_SP_MESH_PEERING_CLOSE,
+                                            sta->sta.addr, llid, plid, reason);
                         break;
                 case OPN_ACPT:
                         /* retry timer is left untouched */
@@ -656,8 +668,9 @@ void mesh_rx_plink_frame(struct ieee80211_sub_if_data *sdata, struct ieee80211_m
                         sta->plid = plid;
                         llid = sta->llid;
                         spin_unlock_bh(&sta->lock);
-                        mesh_plink_frame_tx(sdata, PLINK_CONFIRM, sta->sta.addr, llid,
-                                            plid, 0);
+                        mesh_plink_frame_tx(sdata,
+                                            WLAN_SP_MESH_PEERING_CONFIRM,
+                                            sta->sta.addr, llid, plid, 0);
                         break;
                 case CNF_ACPT:
                         sta->plink_state = NL80211_PLINK_CNF_RCVD;
@@ -677,10 +690,10 @@ void mesh_rx_plink_frame(struct ieee80211_sub_if_data *sdata, struct ieee80211_m
                 switch (event) {
                 case OPN_RJCT:
                 case CNF_RJCT:
-                        reason = cpu_to_le16(MESH_CAPABILITY_POLICY_VIOLATION);
+                        reason = cpu_to_le16(WLAN_REASON_MESH_CONFIG);
                 case CLS_ACPT:
                         if (!reason)
-                                reason = cpu_to_le16(MESH_CLOSE_RCVD);
+                                reason = cpu_to_le16(WLAN_REASON_MESH_CLOSE);
                         sta->reason = reason;
                         sta->plink_state = NL80211_PLINK_HOLDING;
                         if (!mod_plink_timer(sta,
@@ -689,14 +702,15 @@ void mesh_rx_plink_frame(struct ieee80211_sub_if_data *sdata, struct ieee80211_m
 
                         llid = sta->llid;
                         spin_unlock_bh(&sta->lock);
-                        mesh_plink_frame_tx(sdata, PLINK_CLOSE, sta->sta.addr, llid,
-                                            plid, reason);
+                        mesh_plink_frame_tx(sdata, WLAN_SP_MESH_PEERING_CLOSE,
+                                            sta->sta.addr, llid, plid, reason);
                         break;
                 case OPN_ACPT:
                         llid = sta->llid;
                         spin_unlock_bh(&sta->lock);
-                        mesh_plink_frame_tx(sdata, PLINK_CONFIRM, sta->sta.addr, llid,
-                                            plid, 0);
+                        mesh_plink_frame_tx(sdata,
+                                            WLAN_SP_MESH_PEERING_CONFIRM,
+                                            sta->sta.addr, llid, plid, 0);
                         break;
                 case CNF_ACPT:
                         del_timer(&sta->plink_timer);
@@ -717,10 +731,10 @@ void mesh_rx_plink_frame(struct ieee80211_sub_if_data *sdata, struct ieee80211_m
                 switch (event) {
                 case OPN_RJCT:
                 case CNF_RJCT:
-                        reason = cpu_to_le16(MESH_CAPABILITY_POLICY_VIOLATION);
+                        reason = cpu_to_le16(WLAN_REASON_MESH_CONFIG);
                 case CLS_ACPT:
                         if (!reason)
-                                reason = cpu_to_le16(MESH_CLOSE_RCVD);
+                                reason = cpu_to_le16(WLAN_REASON_MESH_CLOSE);
                         sta->reason = reason;
                         sta->plink_state = NL80211_PLINK_HOLDING;
                         if (!mod_plink_timer(sta,
@@ -729,8 +743,9 @@ void mesh_rx_plink_frame(struct ieee80211_sub_if_data *sdata, struct ieee80211_m
 
                         llid = sta->llid;
                         spin_unlock_bh(&sta->lock);
-                        mesh_plink_frame_tx(sdata, PLINK_CLOSE, sta->sta.addr, llid,
-                                            plid, reason);
+                        mesh_plink_frame_tx(sdata,
+                                            WLAN_SP_MESH_PEERING_CLOSE,
+                                            sta->sta.addr, llid, plid, reason);
                         break;
                 case OPN_ACPT:
                         del_timer(&sta->plink_timer);
@@ -740,8 +755,9 @@ void mesh_rx_plink_frame(struct ieee80211_sub_if_data *sdata, struct ieee80211_m
                         ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BEACON);
                         mpl_dbg("Mesh plink with %pM ESTABLISHED\n",
                                 sta->sta.addr);
-                        mesh_plink_frame_tx(sdata, PLINK_CONFIRM, sta->sta.addr, llid,
-                                            plid, 0);
+                        mesh_plink_frame_tx(sdata,
+                                            WLAN_SP_MESH_PEERING_CONFIRM,
+                                            sta->sta.addr, llid, plid, 0);
                         break;
                 default:
                         spin_unlock_bh(&sta->lock);
@@ -752,7 +768,7 @@ void mesh_rx_plink_frame(struct ieee80211_sub_if_data *sdata, struct ieee80211_m
         case NL80211_PLINK_ESTAB:
                 switch (event) {
                 case CLS_ACPT:
-                        reason = cpu_to_le16(MESH_CLOSE_RCVD);
+                        reason = cpu_to_le16(WLAN_REASON_MESH_CLOSE);
                         sta->reason = reason;
                         deactivated = __mesh_plink_deactivate(sta);
                         sta->plink_state = NL80211_PLINK_HOLDING;
@@ -761,14 +777,15 @@ void mesh_rx_plink_frame(struct ieee80211_sub_if_data *sdata, struct ieee80211_m
                         spin_unlock_bh(&sta->lock);
                         if (deactivated)
                                 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BEACON);
-                        mesh_plink_frame_tx(sdata, PLINK_CLOSE, sta->sta.addr, llid,
-                                            plid, reason);
+                        mesh_plink_frame_tx(sdata, WLAN_SP_MESH_PEERING_CLOSE,
+                                            sta->sta.addr, llid, plid, reason);
                         break;
                 case OPN_ACPT:
                         llid = sta->llid;
                         spin_unlock_bh(&sta->lock);
-                        mesh_plink_frame_tx(sdata, PLINK_CONFIRM, sta->sta.addr, llid,
-                                            plid, 0);
+                        mesh_plink_frame_tx(sdata,
+                                            WLAN_SP_MESH_PEERING_CONFIRM,
+                                            sta->sta.addr, llid, plid, 0);
                         break;
                 default:
                         spin_unlock_bh(&sta->lock);
@@ -790,8 +807,8 @@ void mesh_rx_plink_frame(struct ieee80211_sub_if_data *sdata, struct ieee80211_m
                         llid = sta->llid;
                         reason = sta->reason;
                         spin_unlock_bh(&sta->lock);
-                        mesh_plink_frame_tx(sdata, PLINK_CLOSE, sta->sta.addr,
-                                            llid, plid, reason);
+                        mesh_plink_frame_tx(sdata, WLAN_SP_MESH_PEERING_CLOSE,
+                                            sta->sta.addr, llid, plid, reason);
                         break;
                 default:
                         spin_unlock_bh(&sta->lock);
diff --git a/net/mac80211/mlme.c b/net/mac80211/mlme.c
index d6470c7fd6ce..72c8bea81a6c 100644
--- a/net/mac80211/mlme.c
+++ b/net/mac80211/mlme.c
@@ -16,10 +16,12 @@
 #include <linux/skbuff.h>
 #include <linux/if_arp.h>
 #include <linux/etherdevice.h>
+#include <linux/moduleparam.h>
 #include <linux/rtnetlink.h>
-#include <linux/pm_qos_params.h>
+#include <linux/pm_qos.h>
 #include <linux/crc32.h>
 #include <linux/slab.h>
+#include <linux/export.h>
 #include <net/mac80211.h>
 #include <asm/unaligned.h>
 
@@ -160,7 +162,8 @@ static int ecw2cw(int ecw)
  */
 static u32 ieee80211_enable_ht(struct ieee80211_sub_if_data *sdata,
                                struct ieee80211_ht_info *hti,
-                               const u8 *bssid, u16 ap_ht_cap_flags)
+                               const u8 *bssid, u16 ap_ht_cap_flags,
+                               bool beacon_htcap_ie)
 {
         struct ieee80211_local *local = sdata->local;
         struct ieee80211_supported_band *sband;
@@ -232,6 +235,21 @@ static u32 ieee80211_enable_ht(struct ieee80211_sub_if_data *sdata,
                 WARN_ON(!ieee80211_set_channel_type(local, sdata, channel_type));
         }
 
+        if (beacon_htcap_ie && (prev_chantype != channel_type)) {
+                /*
+                 * Whenever the AP announces the HT mode change that can be
+                 * 40MHz intolerant or etc., it would be safer to stop tx
+                 * queues before doing hw config to avoid buffer overflow.
+                 */
+                ieee80211_stop_queues_by_reason(&sdata->local->hw,
+                                IEEE80211_QUEUE_STOP_REASON_CHTYPE_CHANGE);
+
+                /* flush out all packets */
+                synchronize_net();
+
+                drv_flush(local, false);
+        }
+
         /* channel_type change automatically detected */
         ieee80211_hw_config(local, 0);
 
@@ -243,6 +261,10 @@ static u32 ieee80211_enable_ht(struct ieee80211_sub_if_data *sdata,
                                                  IEEE80211_RC_HT_CHANGED,
                                                  channel_type);
                 rcu_read_unlock();
+
+                if (beacon_htcap_ie)
+                        ieee80211_wake_queues_by_reason(&sdata->local->hw,
+                                IEEE80211_QUEUE_STOP_REASON_CHTYPE_CHANGE);
         }
 
         ht_opmode = le16_to_cpu(hti->operation_mode);
@@ -271,11 +293,9 @@ static void ieee80211_send_deauth_disassoc(struct ieee80211_sub_if_data *sdata,
         struct ieee80211_mgmt *mgmt;
 
         skb = dev_alloc_skb(local->hw.extra_tx_headroom + sizeof(*mgmt));
-        if (!skb) {
-                printk(KERN_DEBUG "%s: failed to allocate buffer for "
-                       "deauth/disassoc frame\n", sdata->name);
+        if (!skb)
                 return;
-        }
+
         skb_reserve(skb, local->hw.extra_tx_headroom);
 
         mgmt = (struct ieee80211_mgmt *) skb_put(skb, 24);
@@ -330,6 +350,7 @@ void ieee80211_send_nullfunc(struct ieee80211_local *local,
 {
         struct sk_buff *skb;
         struct ieee80211_hdr_3addr *nullfunc;
+        struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
 
         skb = ieee80211_nullfunc_get(&local->hw, &sdata->vif);
         if (!skb)
@@ -340,6 +361,10 @@ void ieee80211_send_nullfunc(struct ieee80211_local *local,
                 nullfunc->frame_control |= cpu_to_le16(IEEE80211_FCTL_PM);
 
         IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_INTFL_DONT_ENCRYPT;
+        if (ifmgd->flags & (IEEE80211_STA_BEACON_POLL |
+                            IEEE80211_STA_CONNECTION_POLL))
+                IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_CTL_USE_MINRATE;
+
         ieee80211_tx_skb(sdata, skb);
 }
 
@@ -354,11 +379,9 @@ static void ieee80211_send_4addr_nullfunc(struct ieee80211_local *local,
                 return;
 
         skb = dev_alloc_skb(local->hw.extra_tx_headroom + 30);
-        if (!skb) {
-                printk(KERN_DEBUG "%s: failed to allocate buffer for 4addr "
-                       "nullfunc frame\n", sdata->name);
+        if (!skb)
                 return;
-        }
+
         skb_reserve(skb, local->hw.extra_tx_headroom);
 
         nullfunc = (struct ieee80211_hdr *) skb_put(skb, 30);
@@ -394,6 +417,9 @@ static void ieee80211_chswitch_work(struct work_struct *work)
                 /* call "hw_config" only if doing sw channel switch */
                 ieee80211_hw_config(sdata->local,
                         IEEE80211_CONF_CHANGE_CHANNEL);
+        } else {
+                /* update the device channel directly */
+                sdata->local->hw.conf.channel = sdata->local->oper_channel;
         }
 
         /* XXX: shouldn't really modify cfg80211-owned data! */
@@ -608,11 +634,14 @@ static bool ieee80211_powersave_allowed(struct ieee80211_sub_if_data *sdata)
 {
         struct ieee80211_if_managed *mgd = &sdata->u.mgd;
         struct sta_info *sta = NULL;
-        u32 sta_flags = 0;
+        bool authorized = false;
 
         if (!mgd->powersave)
                 return false;
 
+        if (mgd->broken_ap)
+                return false;
+
         if (!mgd->associated)
                 return false;
 
@@ -626,13 +655,10 @@ static bool ieee80211_powersave_allowed(struct ieee80211_sub_if_data *sdata)
         rcu_read_lock();
         sta = sta_info_get(sdata, mgd->bssid);
         if (sta)
-                sta_flags = get_sta_flags(sta);
+                authorized = test_sta_flag(sta, WLAN_STA_AUTHORIZED);
         rcu_read_unlock();
 
-        if (!(sta_flags & WLAN_STA_AUTHORIZED))
-                return false;
-
-        return true;
+        return authorized;
 }
 
 /* need to hold RTNL or interface lock */
@@ -917,8 +943,8 @@ static void ieee80211_sta_wmm_params(struct ieee80211_local *local,
                             params.aifs, params.cw_min, params.cw_max,
                             params.txop, params.uapsd);
 #endif
-                local->tx_conf[queue] = params;
-                if (drv_conf_tx(local, queue, &params))
+                sdata->tx_conf[queue] = params;
+                if (drv_conf_tx(local, sdata, queue, &params))
                         wiphy_debug(local->hw.wiphy,
                                     "failed to set TX queue parameters for queue %d\n",
                                     queue);
@@ -1076,7 +1102,7 @@ static void ieee80211_set_disassoc(struct ieee80211_sub_if_data *sdata,
         mutex_lock(&local->sta_mtx);
         sta = sta_info_get(sdata, bssid);
         if (sta) {
-                set_sta_flags(sta, WLAN_STA_BLOCK_BA);
+                set_sta_flag(sta, WLAN_STA_BLOCK_BA);
                 ieee80211_sta_tear_down_BA_sessions(sta, tx);
         }
         mutex_unlock(&local->sta_mtx);
@@ -1118,8 +1144,9 @@ static void ieee80211_set_disassoc(struct ieee80211_sub_if_data *sdata,
         changed |= BSS_CHANGED_BSSID | BSS_CHANGED_HT;
         ieee80211_bss_info_change_notify(sdata, changed);
 
+        /* remove AP and TDLS peers */
         if (remove_sta)
-                sta_info_destroy_addr(sdata, bssid);
+                sta_info_flush(local, sdata);
 
         del_timer_sync(&sdata->u.mgd.conn_mon_timer);
         del_timer_sync(&sdata->u.mgd.bcn_mon_timer);
@@ -1220,7 +1247,7 @@ static void ieee80211_mgd_probe_ap_send(struct ieee80211_sub_if_data *sdata)
         } else {
                 ssid = ieee80211_bss_get_ie(ifmgd->associated, WLAN_EID_SSID);
                 ieee80211_send_probe_req(sdata, dst, ssid + 2, ssid[1], NULL, 0,
-                                         (u32) -1, true);
+                                         (u32) -1, true, false);
         }
 
         ifmgd->probe_send_count++;
@@ -1467,10 +1494,21 @@ static bool ieee80211_assoc_success(struct ieee80211_work *wk,
         capab_info = le16_to_cpu(mgmt->u.assoc_resp.capab_info);
 
         if ((aid & (BIT(15) | BIT(14))) != (BIT(15) | BIT(14)))
-                printk(KERN_DEBUG "%s: invalid aid value %d; bits 15:14 not "
-                       "set\n", sdata->name, aid);
+                printk(KERN_DEBUG
+                       "%s: invalid AID value 0x%x; bits 15:14 not set\n",
+                       sdata->name, aid);
         aid &= ~(BIT(15) | BIT(14));
 
+        ifmgd->broken_ap = false;
+
+        if (aid == 0 || aid > IEEE80211_MAX_AID) {
+                printk(KERN_DEBUG
+                       "%s: invalid AID value %d (out of range), turn off PS\n",
+                       sdata->name, aid);
+                aid = 0;
+                ifmgd->broken_ap = true;
+        }
+
         pos = mgmt->u.assoc_resp.variable;
         ieee802_11_parse_elems(pos, len - (pos - (u8 *) mgmt), &elems);
 
@@ -1482,17 +1520,22 @@ static bool ieee80211_assoc_success(struct ieee80211_work *wk,
 
         ifmgd->aid = aid;
 
-        sta = sta_info_alloc(sdata, cbss->bssid, GFP_KERNEL);
-        if (!sta) {
-                printk(KERN_DEBUG "%s: failed to alloc STA entry for"
-                       " the AP\n", sdata->name);
+        mutex_lock(&sdata->local->sta_mtx);
+        /*
+         * station info was already allocated and inserted before
+         * the association and should be available to us
+         */
+        sta = sta_info_get_rx(sdata, cbss->bssid);
+        if (WARN_ON(!sta)) {
+                mutex_unlock(&sdata->local->sta_mtx);
                 return false;
         }
 
-        set_sta_flags(sta, WLAN_STA_AUTH | WLAN_STA_ASSOC |
-                           WLAN_STA_ASSOC_AP);
+        set_sta_flag(sta, WLAN_STA_AUTH);
+        set_sta_flag(sta, WLAN_STA_ASSOC);
+        set_sta_flag(sta, WLAN_STA_ASSOC_AP);
         if (!(ifmgd->flags & IEEE80211_STA_CONTROL_PORT))
-                set_sta_flags(sta, WLAN_STA_AUTHORIZED);
+                set_sta_flag(sta, WLAN_STA_AUTHORIZED);
 
         rates = 0;
         basic_rates = 0;
@@ -1551,12 +1594,13 @@ static bool ieee80211_assoc_success(struct ieee80211_work *wk,
         rate_control_rate_init(sta);
 
         if (ifmgd->flags & IEEE80211_STA_MFP_ENABLED)
-                set_sta_flags(sta, WLAN_STA_MFP);
+                set_sta_flag(sta, WLAN_STA_MFP);
 
         if (elems.wmm_param)
-                set_sta_flags(sta, WLAN_STA_WME);
+                set_sta_flag(sta, WLAN_STA_WME);
 
-        err = sta_info_insert(sta);
+        /* sta_info_reinsert will also unlock the mutex lock */
+        err = sta_info_reinsert(sta);
         sta = NULL;
         if (err) {
                 printk(KERN_DEBUG "%s: failed to insert STA entry for"
@@ -1584,7 +1628,8 @@ static bool ieee80211_assoc_success(struct ieee80211_work *wk,
             (sdata->local->hw.queues >= 4) &&
             !(ifmgd->flags & IEEE80211_STA_DISABLE_11N))
                 changed |= ieee80211_enable_ht(sdata, elems.ht_info_elem,
-                                               cbss->bssid, ap_ht_cap_flags);
+                                               cbss->bssid, ap_ht_cap_flags,
+                                               false);
 
         /* set AID and assoc capability,
          * ieee80211_set_associated() will tell the driver */
@@ -1918,7 +1963,7 @@ static void ieee80211_rx_mgmt_beacon(struct ieee80211_sub_if_data *sdata,
                 rcu_read_unlock();
 
                 changed |= ieee80211_enable_ht(sdata, elems.ht_info_elem,
-                                               bssid, ap_ht_cap_flags);
+                                               bssid, ap_ht_cap_flags, true);
         }
 
         /* Note: country IE parsing is done for us by cfg80211 */
@@ -2429,6 +2474,29 @@ int ieee80211_mgd_auth(struct ieee80211_sub_if_data *sdata,
         return 0;
 }
 
+/* create and insert a dummy station entry */
+static int ieee80211_pre_assoc(struct ieee80211_sub_if_data *sdata,
+                                u8 *bssid) {
+        struct sta_info *sta;
+        int err;
+
+        sta = sta_info_alloc(sdata, bssid, GFP_KERNEL);
+        if (!sta)
+                return -ENOMEM;
+
+        sta->dummy = true;
+
+        err = sta_info_insert(sta);
+        sta = NULL;
+        if (err) {
+                printk(KERN_DEBUG "%s: failed to insert Dummy STA entry for"
+                       " the AP (error %d)\n", sdata->name, err);
+                return err;
+        }
+
+        return 0;
+}
+
 static enum work_done_result ieee80211_assoc_done(struct ieee80211_work *wk,
                                                   struct sk_buff *skb)
 {
@@ -2436,9 +2504,11 @@ static enum work_done_result ieee80211_assoc_done(struct ieee80211_work *wk,
         struct ieee80211_mgmt *mgmt;
         struct ieee80211_rx_status *rx_status;
         struct ieee802_11_elems elems;
+        struct cfg80211_bss *cbss = wk->assoc.bss;
         u16 status;
 
         if (!skb) {
+                sta_info_destroy_addr(wk->sdata, cbss->bssid);
                 cfg80211_send_assoc_timeout(wk->sdata->dev, wk->filter_ta);
                 goto destroy;
         }
@@ -2468,12 +2538,16 @@ static enum work_done_result ieee80211_assoc_done(struct ieee80211_work *wk,
                 if (!ieee80211_assoc_success(wk, mgmt, skb->len)) {
                         mutex_unlock(&wk->sdata->u.mgd.mtx);
                         /* oops -- internal error -- send timeout for now */
+                        sta_info_destroy_addr(wk->sdata, cbss->bssid);
                         cfg80211_send_assoc_timeout(wk->sdata->dev,
                                                     wk->filter_ta);
                         return WORK_DONE_DESTROY;
                 }
 
                 mutex_unlock(&wk->sdata->u.mgd.mtx);
+        } else {
+                /* assoc failed - destroy the dummy station entry */
+                sta_info_destroy_addr(wk->sdata, cbss->bssid);
         }
 
         cfg80211_send_rx_assoc(wk->sdata->dev, skb->data, skb->len);
@@ -2492,7 +2566,7 @@ int ieee80211_mgd_assoc(struct ieee80211_sub_if_data *sdata,
         struct ieee80211_bss *bss = (void *)req->bss->priv;
         struct ieee80211_work *wk;
         const u8 *ssid;
-        int i;
+        int i, err;
 
         mutex_lock(&ifmgd->mtx);
         if (ifmgd->associated) {
@@ -2517,6 +2591,16 @@ int ieee80211_mgd_assoc(struct ieee80211_sub_if_data *sdata,
         if (!wk)
                 return -ENOMEM;
 
+        /*
+         * create a dummy station info entry in order
+         * to start accepting incoming EAPOL packets from the station
+         */
+        err = ieee80211_pre_assoc(sdata, req->bss->bssid);
+        if (err) {
+                kfree(wk);
+                return err;
+        }
+
         ifmgd->flags &= ~IEEE80211_STA_DISABLE_11N;
         ifmgd->flags &= ~IEEE80211_STA_NULLFUNC_ACKED;
 
@@ -2674,7 +2758,7 @@ int ieee80211_mgd_deauth(struct ieee80211_sub_if_data *sdata,
                                        req->reason_code, cookie,
                                        !req->local_state_change);
         if (assoc_bss)
-                sta_info_destroy_addr(sdata, bssid);
+                sta_info_flush(sdata->local, sdata);
 
         mutex_lock(&sdata->local->mtx);
         ieee80211_recalc_idle(sdata->local);
@@ -2714,7 +2798,7 @@ int ieee80211_mgd_disassoc(struct ieee80211_sub_if_data *sdata,
         ieee80211_send_deauth_disassoc(sdata, req->bss->bssid,
                         IEEE80211_STYPE_DISASSOC, req->reason_code,
                         cookie, !req->local_state_change);
-        sta_info_destroy_addr(sdata, bssid);
+        sta_info_flush(sdata->local, sdata);
 
         mutex_lock(&sdata->local->mtx);
         ieee80211_recalc_idle(sdata->local);
diff --git a/net/mac80211/offchannel.c b/net/mac80211/offchannel.c
index 13427b194ced..3d414411a96e 100644
--- a/net/mac80211/offchannel.c
+++ b/net/mac80211/offchannel.c
@@ -12,6 +12,7 @@
  * it under the terms of the GNU General Public License version 2 as
  * published by the Free Software Foundation.
  */
+#include <linux/export.h>
 #include <net/mac80211.h>
 #include "ieee80211_i.h"
 #include "driver-trace.h"
diff --git a/net/mac80211/pm.c b/net/mac80211/pm.c
index 6326d3439861..9ee7164b207c 100644
--- a/net/mac80211/pm.c
+++ b/net/mac80211/pm.c
@@ -42,7 +42,7 @@ int __ieee80211_suspend(struct ieee80211_hw *hw, struct cfg80211_wowlan *wowlan)
         if (hw->flags & IEEE80211_HW_AMPDU_AGGREGATION) {
                 mutex_lock(&local->sta_mtx);
                 list_for_each_entry(sta, &local->sta_list, list) {
-                        set_sta_flags(sta, WLAN_STA_BLOCK_BA);
+                        set_sta_flag(sta, WLAN_STA_BLOCK_BA);
                         ieee80211_sta_tear_down_BA_sessions(sta, true);
                 }
                 mutex_unlock(&local->sta_mtx);
diff --git a/net/mac80211/rate.c b/net/mac80211/rate.c
index 3d5a2cb835c4..5a5a7767d541 100644
--- a/net/mac80211/rate.c
+++ b/net/mac80211/rate.c
@@ -11,6 +11,7 @@
 #include <linux/kernel.h>
 #include <linux/rtnetlink.h>
 #include <linux/slab.h>
+#include <linux/module.h>
 #include "rate.h"
 #include "ieee80211_i.h"
 #include "debugfs.h"
@@ -199,7 +200,7 @@ static void rate_control_release(struct kref *kref)
         kfree(ctrl_ref);
 }
 
-static bool rc_no_data_or_no_ack(struct ieee80211_tx_rate_control *txrc)
+static bool rc_no_data_or_no_ack_use_min(struct ieee80211_tx_rate_control *txrc)
 {
         struct sk_buff *skb = txrc->skb;
         struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
@@ -208,7 +209,9 @@ static bool rc_no_data_or_no_ack(struct ieee80211_tx_rate_control *txrc)
 
         fc = hdr->frame_control;
 
-        return (info->flags & IEEE80211_TX_CTL_NO_ACK) || !ieee80211_is_data(fc);
+        return (info->flags & (IEEE80211_TX_CTL_NO_ACK |
+                               IEEE80211_TX_CTL_USE_MINRATE)) ||
+                !ieee80211_is_data(fc);
 }
 
 static void rc_send_low_broadcast(s8 *idx, u32 basic_rates,
@@ -233,6 +236,27 @@ static void rc_send_low_broadcast(s8 *idx, u32 basic_rates,
         /* could not find a basic rate; use original selection */
 }
 
+static inline s8
+rate_lowest_non_cck_index(struct ieee80211_supported_band *sband,
+                          struct ieee80211_sta *sta)
+{
+        int i;
+
+        for (i = 0; i < sband->n_bitrates; i++) {
+                struct ieee80211_rate *srate = &sband->bitrates[i];
+                if ((srate->bitrate == 10) || (srate->bitrate == 20) ||
+                    (srate->bitrate == 55) || (srate->bitrate == 110))
+                        continue;
+
+                if (rate_supported(sta, sband->band, i))
+                        return i;
+        }
+
+        /* No matching rate found */
+        return 0;
+}
+
+
 bool rate_control_send_low(struct ieee80211_sta *sta,
                            void *priv_sta,
                            struct ieee80211_tx_rate_control *txrc)
@@ -241,8 +265,14 @@ bool rate_control_send_low(struct ieee80211_sta *sta,
         struct ieee80211_supported_band *sband = txrc->sband;
         int mcast_rate;
 
-        if (!sta || !priv_sta || rc_no_data_or_no_ack(txrc)) {
-                info->control.rates[0].idx = rate_lowest_index(txrc->sband, sta);
+        if (!sta || !priv_sta || rc_no_data_or_no_ack_use_min(txrc)) {
+                if ((sband->band != IEEE80211_BAND_2GHZ) ||
+                    !(info->flags & IEEE80211_TX_CTL_NO_CCK_RATE))
+                        info->control.rates[0].idx =
+                                rate_lowest_index(txrc->sband, sta);
+                else
+                        info->control.rates[0].idx =
+                                rate_lowest_non_cck_index(txrc->sband, sta);
                 info->control.rates[0].count =
                         (info->flags & IEEE80211_TX_CTL_NO_ACK) ?
                         1 : txrc->hw->max_rate_tries;
diff --git a/net/mac80211/rc80211_minstrel_debugfs.c b/net/mac80211/rc80211_minstrel_debugfs.c
index a290ad231d77..d5a56226e675 100644
--- a/net/mac80211/rc80211_minstrel_debugfs.c
+++ b/net/mac80211/rc80211_minstrel_debugfs.c
@@ -50,6 +50,7 @@
 #include <linux/debugfs.h>
 #include <linux/ieee80211.h>
 #include <linux/slab.h>
+#include <linux/export.h>
 #include <net/mac80211.h>
 #include "rc80211_minstrel.h"
 
diff --git a/net/mac80211/rc80211_minstrel_ht.c b/net/mac80211/rc80211_minstrel_ht.c
index 66a1eeb279c6..cdb28535716b 100644
--- a/net/mac80211/rc80211_minstrel_ht.c
+++ b/net/mac80211/rc80211_minstrel_ht.c
@@ -281,6 +281,8 @@ minstrel_ht_update_stats(struct minstrel_priv *mp, struct minstrel_ht_sta *mi)
 
                 mr = minstrel_get_ratestats(mi, mg->max_tp_rate);
                 if (cur_tp < mr->cur_tp) {
+                        mi->max_tp_rate2 = mi->max_tp_rate;
+                        cur_tp2 = cur_tp;
                         mi->max_tp_rate = mg->max_tp_rate;
                         cur_tp = mr->cur_tp;
                 }
@@ -452,7 +454,8 @@ minstrel_ht_tx_status(void *priv, struct ieee80211_supported_band *sband,
 
         if (time_after(jiffies, mi->stats_update + (mp->update_interval / 2 * HZ) / 1000)) {
                 minstrel_ht_update_stats(mp, mi);
-                minstrel_aggr_check(mp, sta, skb);
+                if (!(info->flags & IEEE80211_TX_CTL_AMPDU))
+                        minstrel_aggr_check(mp, sta, skb);
         }
 }
 
@@ -608,7 +611,13 @@ minstrel_ht_get_rate(void *priv, struct ieee80211_sta *sta, void *priv_sta,
                 return mac80211_minstrel.get_rate(priv, sta, &msp->legacy, txrc);
 
         info->flags |= mi->tx_flags;
-        sample_idx = minstrel_get_sample_rate(mp, mi);
+
+        /* Don't use EAPOL frames for sampling on non-mrr hw */
+        if (mp->hw->max_rates == 1 &&
+            txrc->skb->protocol == cpu_to_be16(ETH_P_PAE))
+                sample_idx = -1;
+        else
+                sample_idx = minstrel_get_sample_rate(mp, mi);
 
 #ifdef CONFIG_MAC80211_DEBUGFS
         /* use fixed index if set */
diff --git a/net/mac80211/rc80211_minstrel_ht_debugfs.c b/net/mac80211/rc80211_minstrel_ht_debugfs.c
index cefcb5d2dae6..e788f76a1dfe 100644
--- a/net/mac80211/rc80211_minstrel_ht_debugfs.c
+++ b/net/mac80211/rc80211_minstrel_ht_debugfs.c
@@ -10,6 +10,7 @@
 #include <linux/skbuff.h>
 #include <linux/debugfs.h>
 #include <linux/ieee80211.h>
+#include <linux/export.h>
 #include <net/mac80211.h>
 #include "rc80211_minstrel.h"
 #include "rc80211_minstrel_ht.h"
diff --git a/net/mac80211/rc80211_pid_debugfs.c b/net/mac80211/rc80211_pid_debugfs.c
index 4851e9e2daed..c97a0657c043 100644
--- a/net/mac80211/rc80211_pid_debugfs.c
+++ b/net/mac80211/rc80211_pid_debugfs.c
@@ -13,6 +13,7 @@
 #include <linux/types.h>
 #include <linux/skbuff.h>
 #include <linux/slab.h>
+#include <linux/export.h>
 
 #include <net/mac80211.h>
 #include "rate.h"
diff --git a/net/mac80211/rx.c b/net/mac80211/rx.c
index fe2c2a717793..bb53726cb04a 100644
--- a/net/mac80211/rx.c
+++ b/net/mac80211/rx.c
@@ -16,6 +16,7 @@
 #include <linux/netdevice.h>
 #include <linux/etherdevice.h>
 #include <linux/rcupdate.h>
+#include <linux/export.h>
 #include <net/mac80211.h>
 #include <net/ieee80211_radiotap.h>
 
@@ -476,7 +477,6 @@ static ieee80211_rx_result
 ieee80211_rx_mesh_check(struct ieee80211_rx_data *rx)
 {
         struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)rx->skb->data;
-        unsigned int hdrlen = ieee80211_hdrlen(hdr->frame_control);
         char *dev_addr = rx->sdata->vif.addr;
 
         if (ieee80211_is_data(hdr->frame_control)) {
@@ -524,14 +524,6 @@ ieee80211_rx_mesh_check(struct ieee80211_rx_data *rx)
 
         }
 
-#define msh_h_get(h, l) ((struct ieee80211s_hdr *) ((u8 *)h + l))
-
-        if (ieee80211_is_data(hdr->frame_control) &&
-            is_multicast_ether_addr(hdr->addr1) &&
-            mesh_rmc_check(hdr->addr3, msh_h_get(hdr, hdrlen), rx->sdata))
-                return RX_DROP_MONITOR;
-#undef msh_h_get
-
         return RX_CONTINUE;
 }
 
@@ -850,8 +842,21 @@ ieee80211_rx_h_check(struct ieee80211_rx_data *rx)
                       ieee80211_is_pspoll(hdr->frame_control)) &&
                      rx->sdata->vif.type != NL80211_IFTYPE_ADHOC &&
                      rx->sdata->vif.type != NL80211_IFTYPE_WDS &&
-                     (!rx->sta || !test_sta_flags(rx->sta, WLAN_STA_ASSOC))))
+                     (!rx->sta || !test_sta_flag(rx->sta, WLAN_STA_ASSOC)))) {
+                if (rx->sta && rx->sta->dummy &&
+                    ieee80211_is_data_present(hdr->frame_control)) {
+                        u16 ethertype;
+                        u8 *payload;
+
+                        payload = rx->skb->data +
+                                ieee80211_hdrlen(hdr->frame_control);
+                        ethertype = (payload[6] << 8) | payload[7];
+                        if (cpu_to_be16(ethertype) ==
+                            rx->sdata->control_port_protocol)
+                                return RX_CONTINUE;
+                }
                 return RX_DROP_MONITOR;
+        }
 
         return RX_CONTINUE;
 }
@@ -1106,7 +1111,7 @@ static void ap_sta_ps_start(struct sta_info *sta)
         struct ieee80211_local *local = sdata->local;
 
         atomic_inc(&sdata->bss->num_sta_ps);
-        set_sta_flags(sta, WLAN_STA_PS_STA);
+        set_sta_flag(sta, WLAN_STA_PS_STA);
         if (!(local->hw.flags & IEEE80211_HW_AP_LINK_PS))
                 drv_sta_notify(local, sdata, STA_NOTIFY_SLEEP, &sta->sta);
 #ifdef CONFIG_MAC80211_VERBOSE_PS_DEBUG
@@ -1126,7 +1131,7 @@ static void ap_sta_ps_end(struct sta_info *sta)
                sdata->name, sta->sta.addr, sta->sta.aid);
 #endif /* CONFIG_MAC80211_VERBOSE_PS_DEBUG */
 
-        if (test_sta_flags(sta, WLAN_STA_PS_DRIVER)) {
+        if (test_sta_flag(sta, WLAN_STA_PS_DRIVER)) {
 #ifdef CONFIG_MAC80211_VERBOSE_PS_DEBUG
                 printk(KERN_DEBUG "%s: STA %pM aid %d driver-ps-blocked\n",
                        sdata->name, sta->sta.addr, sta->sta.aid);
@@ -1145,7 +1150,7 @@ int ieee80211_sta_ps_transition(struct ieee80211_sta *sta, bool start)
         WARN_ON(!(sta_inf->local->hw.flags & IEEE80211_HW_AP_LINK_PS));
 
         /* Don't let the same PS state be set twice */
-        in_ps = test_sta_flags(sta_inf, WLAN_STA_PS_STA);
+        in_ps = test_sta_flag(sta_inf, WLAN_STA_PS_STA);
         if ((start && in_ps) || (!start && !in_ps))
                 return -EINVAL;
 
@@ -1159,6 +1164,81 @@ int ieee80211_sta_ps_transition(struct ieee80211_sta *sta, bool start)
 EXPORT_SYMBOL(ieee80211_sta_ps_transition);
 
 static ieee80211_rx_result debug_noinline
+ieee80211_rx_h_uapsd_and_pspoll(struct ieee80211_rx_data *rx)
+{
+        struct ieee80211_sub_if_data *sdata = rx->sdata;
+        struct ieee80211_hdr *hdr = (void *)rx->skb->data;
+        struct ieee80211_rx_status *status = IEEE80211_SKB_RXCB(rx->skb);
+        int tid, ac;
+
+        if (!rx->sta || !(status->rx_flags & IEEE80211_RX_RA_MATCH))
+                return RX_CONTINUE;
+
+        if (sdata->vif.type != NL80211_IFTYPE_AP &&
+            sdata->vif.type != NL80211_IFTYPE_AP_VLAN)
+                return RX_CONTINUE;
+
+        /*
+         * The device handles station powersave, so don't do anything about
+         * uAPSD and PS-Poll frames (the latter shouldn't even come up from
+         * it to mac80211 since they're handled.)
+         */
+        if (sdata->local->hw.flags & IEEE80211_HW_AP_LINK_PS)
+                return RX_CONTINUE;
+
+        /*
+         * Don't do anything if the station isn't already asleep. In
+         * the uAPSD case, the station will probably be marked asleep,
+         * in the PS-Poll case the station must be confused ...
+         */
+        if (!test_sta_flag(rx->sta, WLAN_STA_PS_STA))
+                return RX_CONTINUE;
+
+        if (unlikely(ieee80211_is_pspoll(hdr->frame_control))) {
+                if (!test_sta_flag(rx->sta, WLAN_STA_SP)) {
+                        if (!test_sta_flag(rx->sta, WLAN_STA_PS_DRIVER))
+                                ieee80211_sta_ps_deliver_poll_response(rx->sta);
+                        else
+                                set_sta_flag(rx->sta, WLAN_STA_PSPOLL);
+                }
+
+                /* Free PS Poll skb here instead of returning RX_DROP that would
+                 * count as an dropped frame. */
+                dev_kfree_skb(rx->skb);
+
+                return RX_QUEUED;
+        } else if (!ieee80211_has_morefrags(hdr->frame_control) &&
+                   !(status->rx_flags & IEEE80211_RX_DEFERRED_RELEASE) &&
+                   ieee80211_has_pm(hdr->frame_control) &&
+                   (ieee80211_is_data_qos(hdr->frame_control) ||
+                    ieee80211_is_qos_nullfunc(hdr->frame_control))) {
+                tid = *ieee80211_get_qos_ctl(hdr) & IEEE80211_QOS_CTL_TID_MASK;
+                ac = ieee802_1d_to_ac[tid & 7];
+
+                /*
+                 * If this AC is not trigger-enabled do nothing.
+                 *
+                 * NB: This could/should check a separate bitmap of trigger-
+                 * enabled queues, but for now we only implement uAPSD w/o
+                 * TSPEC changes to the ACs, so they're always the same.
+                 */
+                if (!(rx->sta->sta.uapsd_queues & BIT(ac)))
+                        return RX_CONTINUE;
+
+                /* if we are in a service period, do nothing */
+                if (test_sta_flag(rx->sta, WLAN_STA_SP))
+                        return RX_CONTINUE;
+
+                if (!test_sta_flag(rx->sta, WLAN_STA_PS_DRIVER))
+                        ieee80211_sta_ps_deliver_uapsd(rx->sta);
+                else
+                        set_sta_flag(rx->sta, WLAN_STA_UAPSD);
+        }
+
+        return RX_CONTINUE;
+}
+
+static ieee80211_rx_result debug_noinline
 ieee80211_rx_h_sta_process(struct ieee80211_rx_data *rx)
 {
         struct sta_info *sta = rx->sta;
@@ -1216,7 +1296,7 @@ ieee80211_rx_h_sta_process(struct ieee80211_rx_data *rx)
             !(status->rx_flags & IEEE80211_RX_DEFERRED_RELEASE) &&
             (rx->sdata->vif.type == NL80211_IFTYPE_AP ||
              rx->sdata->vif.type == NL80211_IFTYPE_AP_VLAN)) {
-                if (test_sta_flags(sta, WLAN_STA_PS_STA)) {
+                if (test_sta_flag(sta, WLAN_STA_PS_STA)) {
                         /*
                          * Ignore doze->wake transitions that are
                          * indicated by non-data frames, the standard
@@ -1469,33 +1549,6 @@ ieee80211_rx_h_defragment(struct ieee80211_rx_data *rx)
 }
 
 static ieee80211_rx_result debug_noinline
-ieee80211_rx_h_ps_poll(struct ieee80211_rx_data *rx)
-{
-        struct ieee80211_sub_if_data *sdata = rx->sdata;
-        __le16 fc = ((struct ieee80211_hdr *)rx->skb->data)->frame_control;
-        struct ieee80211_rx_status *status = IEEE80211_SKB_RXCB(rx->skb);
-
-        if (likely(!rx->sta || !ieee80211_is_pspoll(fc) ||
-                   !(status->rx_flags & IEEE80211_RX_RA_MATCH)))
-                return RX_CONTINUE;
-
-        if ((sdata->vif.type != NL80211_IFTYPE_AP) &&
-            (sdata->vif.type != NL80211_IFTYPE_AP_VLAN))
-                return RX_DROP_UNUSABLE;
-
-        if (!test_sta_flags(rx->sta, WLAN_STA_PS_DRIVER))
-                ieee80211_sta_ps_deliver_poll_response(rx->sta);
-        else
-                set_sta_flags(rx->sta, WLAN_STA_PSPOLL);
-
-        /* Free PS Poll skb here instead of returning RX_DROP that would
-         * count as an dropped frame. */
-        dev_kfree_skb(rx->skb);
-
-        return RX_QUEUED;
-}
-
-static ieee80211_rx_result debug_noinline
 ieee80211_rx_h_remove_qos_control(struct ieee80211_rx_data *rx)
 {
         u8 *data = rx->skb->data;
@@ -1518,7 +1571,7 @@ static int
 ieee80211_802_1x_port_control(struct ieee80211_rx_data *rx)
 {
         if (unlikely(!rx->sta ||
-            !test_sta_flags(rx->sta, WLAN_STA_AUTHORIZED)))
+            !test_sta_flag(rx->sta, WLAN_STA_AUTHORIZED)))
                 return -EACCES;
 
         return 0;
@@ -1561,7 +1614,7 @@ ieee80211_drop_unencrypted_mgmt(struct ieee80211_rx_data *rx)
         if (status->flag & RX_FLAG_DECRYPTED)
                 return 0;
 
-        if (rx->sta && test_sta_flags(rx->sta, WLAN_STA_MFP)) {
+        if (rx->sta && test_sta_flag(rx->sta, WLAN_STA_MFP)) {
                 if (unlikely(!ieee80211_has_protected(fc) &&
                              ieee80211_is_unicast_robust_mgmt_frame(rx->skb) &&
                              rx->key)) {
@@ -1827,6 +1880,12 @@ ieee80211_rx_h_mesh_fwding(struct ieee80211_rx_data *rx)
         hdrlen = ieee80211_hdrlen(hdr->frame_control);
         mesh_hdr = (struct ieee80211s_hdr *) (skb->data + hdrlen);
 
+        /* frame is in RMC, don't forward */
+        if (ieee80211_is_data(hdr->frame_control) &&
+            is_multicast_ether_addr(hdr->addr1) &&
+            mesh_rmc_check(hdr->addr3, mesh_hdr, rx->sdata))
+                return RX_DROP_MONITOR;
+
         if (!ieee80211_is_data(hdr->frame_control))
                 return RX_CONTINUE;
 
@@ -1834,6 +1893,12 @@ ieee80211_rx_h_mesh_fwding(struct ieee80211_rx_data *rx)
                 /* illegal frame */
                 return RX_DROP_MONITOR;
 
+        if (ieee80211_queue_stopped(&local->hw, skb_get_queue_mapping(skb))) {
+                IEEE80211_IFSTA_MESH_CTR_INC(&sdata->u.mesh,
+                                                dropped_frames_congestion);
+                return RX_DROP_MONITOR;
+        }
+
         if (mesh_hdr->flags & MESH_FLAGS_AE) {
                 struct mesh_path *mppath;
                 char *proxied_addr;
@@ -1889,13 +1954,13 @@ ieee80211_rx_h_mesh_fwding(struct ieee80211_rx_data *rx)
                         memset(info, 0, sizeof(*info));
                         info->flags |= IEEE80211_TX_INTFL_NEED_TXPROCESSING;
                         info->control.vif = &rx->sdata->vif;
-                        skb_set_queue_mapping(skb,
-                                ieee80211_select_queue(rx->sdata, fwd_skb));
-                        ieee80211_set_qos_hdr(local, skb);
-                        if (is_multicast_ether_addr(fwd_hdr->addr1))
+                        if (is_multicast_ether_addr(fwd_hdr->addr1)) {
                                 IEEE80211_IFSTA_MESH_CTR_INC(&sdata->u.mesh,
                                                                 fwded_mcast);
-                        else {
+                                skb_set_queue_mapping(fwd_skb,
+                                        ieee80211_select_queue(sdata, fwd_skb));
+                                ieee80211_set_qos_hdr(sdata, fwd_skb);
+                        } else {
                                 int err;
                                 /*
                                  * Save TA to addr1 to send TA a path error if a
@@ -2220,12 +2285,29 @@ ieee80211_rx_h_action(struct ieee80211_rx_data *rx)
                         goto handled;
                 }
                 break;
+        case WLAN_CATEGORY_SELF_PROTECTED:
+                switch (mgmt->u.action.u.self_prot.action_code) {
+                case WLAN_SP_MESH_PEERING_OPEN:
+                case WLAN_SP_MESH_PEERING_CLOSE:
+                case WLAN_SP_MESH_PEERING_CONFIRM:
+                        if (!ieee80211_vif_is_mesh(&sdata->vif))
+                                goto invalid;
+                        if (sdata->u.mesh.security != IEEE80211_MESH_SEC_NONE)
+                                /* userspace handles this frame */
+                                break;
+                        goto queue;
+                case WLAN_SP_MGK_INFORM:
+                case WLAN_SP_MGK_ACK:
+                        if (!ieee80211_vif_is_mesh(&sdata->vif))
+                                goto invalid;
+                        break;
+                }
+                break;
         case WLAN_CATEGORY_MESH_ACTION:
                 if (!ieee80211_vif_is_mesh(&sdata->vif))
                         break;
-                goto queue;
-        case WLAN_CATEGORY_MESH_PATH_SEL:
-                if (!mesh_path_sel_is_hwmp(sdata))
+                if (mesh_action_is_path_sel(mgmt) &&
+                  (!mesh_path_sel_is_hwmp(sdata)))
                         break;
                 goto queue;
         }
@@ -2534,17 +2616,17 @@ static void ieee80211_rx_handlers(struct ieee80211_rx_data *rx)
 
                 CALL_RXH(ieee80211_rx_h_decrypt)
                 CALL_RXH(ieee80211_rx_h_check_more_data)
+                CALL_RXH(ieee80211_rx_h_uapsd_and_pspoll)
                 CALL_RXH(ieee80211_rx_h_sta_process)
                 CALL_RXH(ieee80211_rx_h_defragment)
-                CALL_RXH(ieee80211_rx_h_ps_poll)
                 CALL_RXH(ieee80211_rx_h_michael_mic_verify)
                 /* must be after MMIC verify so header is counted in MPDU mic */
-                CALL_RXH(ieee80211_rx_h_remove_qos_control)
-                CALL_RXH(ieee80211_rx_h_amsdu)
 #ifdef CONFIG_MAC80211_MESH
                 if (ieee80211_vif_is_mesh(&rx->sdata->vif))
                         CALL_RXH(ieee80211_rx_h_mesh_fwding);
 #endif
+                CALL_RXH(ieee80211_rx_h_remove_qos_control)
+                CALL_RXH(ieee80211_rx_h_amsdu)
                 CALL_RXH(ieee80211_rx_h_data)
                 CALL_RXH(ieee80211_rx_h_ctrl);
                 CALL_RXH(ieee80211_rx_h_mgmt_check)
@@ -2686,7 +2768,9 @@ static int prepare_for_handlers(struct ieee80211_rx_data *rx,
                 } else if (!ieee80211_bssid_match(bssid,
                                         sdata->vif.addr)) {
                         if (!(status->rx_flags & IEEE80211_RX_IN_SCAN) &&
-                            !ieee80211_is_beacon(hdr->frame_control))
+                            !ieee80211_is_beacon(hdr->frame_control) &&
+                            !(ieee80211_is_action(hdr->frame_control) &&
+                              sdata->vif.p2p))
                                 return 0;
                         status->rx_flags &= ~IEEE80211_RX_RA_MATCH;
                 }
@@ -2791,7 +2875,7 @@ static void __ieee80211_rx_handle_packet(struct ieee80211_hw *hw,
         if (ieee80211_is_data(fc)) {
                 prev_sta = NULL;
 
-                for_each_sta_info(local, hdr->addr2, sta, tmp) {
+                for_each_sta_info_rx(local, hdr->addr2, sta, tmp) {
                         if (!prev_sta) {
                                 prev_sta = sta;
                                 continue;
@@ -2835,7 +2919,7 @@ static void __ieee80211_rx_handle_packet(struct ieee80211_hw *hw,
                         continue;
                 }
 
-                rx.sta = sta_info_get_bss(prev, hdr->addr2);
+                rx.sta = sta_info_get_bss_rx(prev, hdr->addr2);
                 rx.sdata = prev;
                 ieee80211_prepare_and_rx_handle(&rx, skb, false);
 
@@ -2843,7 +2927,7 @@ static void __ieee80211_rx_handle_packet(struct ieee80211_hw *hw,
         }
 
         if (prev) {
-                rx.sta = sta_info_get_bss(prev, hdr->addr2);
+                rx.sta = sta_info_get_bss_rx(prev, hdr->addr2);
                 rx.sdata = prev;
 
                 if (ieee80211_prepare_and_rx_handle(&rx, skb, true))
diff --git a/net/mac80211/scan.c b/net/mac80211/scan.c
index 6f09eca01112..105436dbb90d 100644
--- a/net/mac80211/scan.c
+++ b/net/mac80211/scan.c
@@ -14,9 +14,10 @@
 
 #include <linux/if_arp.h>
 #include <linux/rtnetlink.h>
-#include <linux/pm_qos_params.h>
+#include <linux/pm_qos.h>
 #include <net/sch_generic.h>
 #include <linux/slab.h>
+#include <linux/export.h>
 #include <net/mac80211.h>
 
 #include "ieee80211_i.h"
@@ -254,6 +255,7 @@ static bool ieee80211_prep_hw_scan(struct ieee80211_local *local)
                                          req->ie, req->ie_len, band,
                                          req->rates[band], 0);
         local->hw_scan_req->ie_len = ielen;
+        local->hw_scan_req->no_cck = req->no_cck;
 
         return true;
 }
@@ -660,7 +662,8 @@ static void ieee80211_scan_state_send_probe(struct ieee80211_local *local,
                         local->scan_req->ssids[i].ssid,
                         local->scan_req->ssids[i].ssid_len,
                         local->scan_req->ie, local->scan_req->ie_len,
-                        local->scan_req->rates[band], false);
+                        local->scan_req->rates[band], false,
+                        local->scan_req->no_cck);
 
         /*
          * After sending probe requests, wait for probe responses
diff --git a/net/mac80211/spectmgmt.c b/net/mac80211/spectmgmt.c
index 7733f66ee2c4..578eea3fc04d 100644
--- a/net/mac80211/spectmgmt.c
+++ b/net/mac80211/spectmgmt.c
@@ -32,12 +32,8 @@ static void ieee80211_send_refuse_measurement_request(struct ieee80211_sub_if_da
 
         skb = dev_alloc_skb(sizeof(*msr_report) + local->hw.extra_tx_headroom +
                                 sizeof(struct ieee80211_msrment_ie));
-
-        if (!skb) {
-                printk(KERN_ERR "%s: failed to allocate buffer for "
-                                "measurement report frame\n", sdata->name);
+        if (!skb)
                 return;
-        }
 
         skb_reserve(skb, local->hw.extra_tx_headroom);
         msr_report = (struct ieee80211_mgmt *)skb_put(skb, 24);
diff --git a/net/mac80211/sta_info.c b/net/mac80211/sta_info.c
index 21070e9bc8d0..ce962d2c8782 100644
--- a/net/mac80211/sta_info.c
+++ b/net/mac80211/sta_info.c
@@ -24,6 +24,7 @@
 #include "sta_info.h"
 #include "debugfs_sta.h"
 #include "mesh.h"
+#include "wme.h"
 
 /**
  * DOC: STA information lifetime rules
@@ -72,7 +73,7 @@ static int sta_info_hash_del(struct ieee80211_local *local,
         if (!s)
                 return -ENOENT;
         if (s == sta) {
-                rcu_assign_pointer(local->sta_hash[STA_HASH(sta->sta.addr)],
+                RCU_INIT_POINTER(local->sta_hash[STA_HASH(sta->sta.addr)],
                                    s->hnext);
                 return 0;
         }
@@ -82,7 +83,7 @@ static int sta_info_hash_del(struct ieee80211_local *local,
                 s = rcu_dereference_protected(s->hnext,
                                         lockdep_is_held(&local->sta_lock));
         if (rcu_access_pointer(s->hnext)) {
-                rcu_assign_pointer(s->hnext, sta->hnext);
+                RCU_INIT_POINTER(s->hnext, sta->hnext);
                 return 0;
         }
 
@@ -100,6 +101,27 @@ struct sta_info *sta_info_get(struct ieee80211_sub_if_data *sdata,
                                     lockdep_is_held(&local->sta_lock) ||
                                     lockdep_is_held(&local->sta_mtx));
         while (sta) {
+                if (sta->sdata == sdata && !sta->dummy &&
+                    memcmp(sta->sta.addr, addr, ETH_ALEN) == 0)
+                        break;
+                sta = rcu_dereference_check(sta->hnext,
+                                            lockdep_is_held(&local->sta_lock) ||
+                                            lockdep_is_held(&local->sta_mtx));
+        }
+        return sta;
+}
+
+/* get a station info entry even if it is a dummy station*/
+struct sta_info *sta_info_get_rx(struct ieee80211_sub_if_data *sdata,
+                              const u8 *addr)
+{
+        struct ieee80211_local *local = sdata->local;
+        struct sta_info *sta;
+
+        sta = rcu_dereference_check(local->sta_hash[STA_HASH(addr)],
+                                    lockdep_is_held(&local->sta_lock) ||
+                                    lockdep_is_held(&local->sta_mtx));
+        while (sta) {
                 if (sta->sdata == sdata &&
                     memcmp(sta->sta.addr, addr, ETH_ALEN) == 0)
                         break;
@@ -126,6 +148,32 @@ struct sta_info *sta_info_get_bss(struct ieee80211_sub_if_data *sdata,
         while (sta) {
                 if ((sta->sdata == sdata ||
                      (sta->sdata->bss && sta->sdata->bss == sdata->bss)) &&
+                    !sta->dummy &&
+                    memcmp(sta->sta.addr, addr, ETH_ALEN) == 0)
+                        break;
+                sta = rcu_dereference_check(sta->hnext,
+                                            lockdep_is_held(&local->sta_lock) ||
+                                            lockdep_is_held(&local->sta_mtx));
+        }
+        return sta;
+}
+
+/*
+ * Get sta info either from the specified interface
+ * or from one of its vlans (including dummy stations)
+ */
+struct sta_info *sta_info_get_bss_rx(struct ieee80211_sub_if_data *sdata,
+                                  const u8 *addr)
+{
+        struct ieee80211_local *local = sdata->local;
+        struct sta_info *sta;
+
+        sta = rcu_dereference_check(local->sta_hash[STA_HASH(addr)],
+                                    lockdep_is_held(&local->sta_lock) ||
+                                    lockdep_is_held(&local->sta_mtx));
+        while (sta) {
+                if ((sta->sdata == sdata ||
+                     (sta->sdata->bss && sta->sdata->bss == sdata->bss)) &&
                     memcmp(sta->sta.addr, addr, ETH_ALEN) == 0)
                         break;
                 sta = rcu_dereference_check(sta->hnext,
@@ -184,7 +232,7 @@ static void sta_info_hash_add(struct ieee80211_local *local,
                               struct sta_info *sta)
 {
         sta->hnext = local->sta_hash[STA_HASH(sta->sta.addr)];
-        rcu_assign_pointer(local->sta_hash[STA_HASH(sta->sta.addr)], sta);
+        RCU_INIT_POINTER(local->sta_hash[STA_HASH(sta->sta.addr)], sta);
 }
 
 static void sta_unblock(struct work_struct *wk)
@@ -196,13 +244,22 @@ static void sta_unblock(struct work_struct *wk)
         if (sta->dead)
                 return;
 
-        if (!test_sta_flags(sta, WLAN_STA_PS_STA))
+        if (!test_sta_flag(sta, WLAN_STA_PS_STA))
                 ieee80211_sta_ps_deliver_wakeup(sta);
-        else if (test_and_clear_sta_flags(sta, WLAN_STA_PSPOLL)) {
-                clear_sta_flags(sta, WLAN_STA_PS_DRIVER);
+        else if (test_and_clear_sta_flag(sta, WLAN_STA_PSPOLL)) {
+                clear_sta_flag(sta, WLAN_STA_PS_DRIVER);
+
+                local_bh_disable();
                 ieee80211_sta_ps_deliver_poll_response(sta);
+                local_bh_enable();
+        } else if (test_and_clear_sta_flag(sta, WLAN_STA_UAPSD)) {
+                clear_sta_flag(sta, WLAN_STA_PS_DRIVER);
+
+                local_bh_disable();
+                ieee80211_sta_ps_deliver_uapsd(sta);
+                local_bh_enable();
         } else
-                clear_sta_flags(sta, WLAN_STA_PS_DRIVER);
+                clear_sta_flag(sta, WLAN_STA_PS_DRIVER);
 }
 
 static int sta_prepare_rate_control(struct ieee80211_local *local,
@@ -235,7 +292,6 @@ struct sta_info *sta_info_alloc(struct ieee80211_sub_if_data *sdata,
                 return NULL;
 
         spin_lock_init(&sta->lock);
-        spin_lock_init(&sta->flaglock);
         INIT_WORK(&sta->drv_unblock_wk, sta_unblock);
         INIT_WORK(&sta->ampdu_mlme.work, ieee80211_ba_session_work);
         mutex_init(&sta->ampdu_mlme.mtx);
@@ -262,8 +318,10 @@ struct sta_info *sta_info_alloc(struct ieee80211_sub_if_data *sdata,
                  */
                 sta->timer_to_tid[i] = i;
         }
-        skb_queue_head_init(&sta->ps_tx_buf);
-        skb_queue_head_init(&sta->tx_filtered);
+        for (i = 0; i < IEEE80211_NUM_ACS; i++) {
+                skb_queue_head_init(&sta->ps_tx_buf[i]);
+                skb_queue_head_init(&sta->tx_filtered[i]);
+        }
 
         for (i = 0; i < NUM_RX_DATA_QUEUES; i++)
                 sta->last_seq_ctrl[i] = cpu_to_le16(USHRT_MAX);
@@ -280,7 +338,8 @@ struct sta_info *sta_info_alloc(struct ieee80211_sub_if_data *sdata,
         return sta;
 }
 
-static int sta_info_finish_insert(struct sta_info *sta, bool async)
+static int sta_info_finish_insert(struct sta_info *sta,
+                                bool async, bool dummy_reinsert)
 {
         struct ieee80211_local *local = sta->local;
         struct ieee80211_sub_if_data *sdata = sta->sdata;
@@ -290,50 +349,58 @@ static int sta_info_finish_insert(struct sta_info *sta, bool async)
 
         lockdep_assert_held(&local->sta_mtx);
 
-        /* notify driver */
-        if (sdata->vif.type == NL80211_IFTYPE_AP_VLAN)
-                sdata = container_of(sdata->bss,
-                                     struct ieee80211_sub_if_data,
-                                     u.ap);
-        err = drv_sta_add(local, sdata, &sta->sta);
-        if (err) {
-                if (!async)
-                        return err;
-                printk(KERN_DEBUG "%s: failed to add IBSS STA %pM to driver (%d)"
-                                  " - keeping it anyway.\n",
-                       sdata->name, sta->sta.addr, err);
-        } else {
-                sta->uploaded = true;
+        if (!sta->dummy || dummy_reinsert) {
+                /* notify driver */
+                if (sdata->vif.type == NL80211_IFTYPE_AP_VLAN)
+                        sdata = container_of(sdata->bss,
+                                             struct ieee80211_sub_if_data,
+                                             u.ap);
+                err = drv_sta_add(local, sdata, &sta->sta);
+                if (err) {
+                        if (!async)
+                                return err;
+                        printk(KERN_DEBUG "%s: failed to add IBSS STA %pM to "
+                                          "driver (%d) - keeping it anyway.\n",
+                               sdata->name, sta->sta.addr, err);
+                } else {
+                        sta->uploaded = true;
 #ifdef CONFIG_MAC80211_VERBOSE_DEBUG
-                if (async)
-                        wiphy_debug(local->hw.wiphy,
-                                    "Finished adding IBSS STA %pM\n",
-                                    sta->sta.addr);
+                        if (async)
+                                wiphy_debug(local->hw.wiphy,
+                                            "Finished adding IBSS STA %pM\n",
+                                            sta->sta.addr);
 #endif
+                }
+
+                sdata = sta->sdata;
         }
 
-        sdata = sta->sdata;
+        if (!dummy_reinsert) {
+                if (!async) {
+                        local->num_sta++;
+                        local->sta_generation++;
+                        smp_mb();
 
-        if (!async) {
-                local->num_sta++;
-                local->sta_generation++;
-                smp_mb();
+                        /* make the station visible */
+                        spin_lock_irqsave(&local->sta_lock, flags);
+                        sta_info_hash_add(local, sta);
+                        spin_unlock_irqrestore(&local->sta_lock, flags);
+                }
 
-                /* make the station visible */
-                spin_lock_irqsave(&local->sta_lock, flags);
-                sta_info_hash_add(local, sta);
-                spin_unlock_irqrestore(&local->sta_lock, flags);
+                list_add(&sta->list, &local->sta_list);
+        } else {
+                sta->dummy = false;
         }
 
-        list_add(&sta->list, &local->sta_list);
-
-        ieee80211_sta_debugfs_add(sta);
-        rate_control_add_sta_debugfs(sta);
-
-        sinfo.filled = 0;
-        sinfo.generation = local->sta_generation;
-        cfg80211_new_sta(sdata->dev, sta->sta.addr, &sinfo, GFP_KERNEL);
+        if (!sta->dummy) {
+                ieee80211_sta_debugfs_add(sta);
+                rate_control_add_sta_debugfs(sta);
 
+                memset(&sinfo, 0, sizeof(sinfo));
+                sinfo.filled = 0;
+                sinfo.generation = local->sta_generation;
+                cfg80211_new_sta(sdata->dev, sta->sta.addr, &sinfo, GFP_KERNEL);
+        }
 
         return 0;
 }
@@ -350,7 +417,7 @@ static void sta_info_finish_pending(struct ieee80211_local *local)
                 list_del(&sta->list);
                 spin_unlock_irqrestore(&local->sta_lock, flags);
 
-                sta_info_finish_insert(sta, true);
+                sta_info_finish_insert(sta, true, false);
 
                 spin_lock_irqsave(&local->sta_lock, flags);
         }
@@ -367,106 +434,117 @@ static void sta_info_finish_work(struct work_struct *work)
         mutex_unlock(&local->sta_mtx);
 }
 
-int sta_info_insert_rcu(struct sta_info *sta) __acquires(RCU)
+static int sta_info_insert_check(struct sta_info *sta)
 {
-        struct ieee80211_local *local = sta->local;
         struct ieee80211_sub_if_data *sdata = sta->sdata;
-        unsigned long flags;
-        int err = 0;
 
         /*
          * Can't be a WARN_ON because it can be triggered through a race:
          * something inserts a STA (on one CPU) without holding the RTNL
          * and another CPU turns off the net device.
          */
-        if (unlikely(!ieee80211_sdata_running(sdata))) {
-                err = -ENETDOWN;
-                rcu_read_lock();
-                goto out_free;
-        }
+        if (unlikely(!ieee80211_sdata_running(sdata)))
+                return -ENETDOWN;
 
         if (WARN_ON(compare_ether_addr(sta->sta.addr, sdata->vif.addr) == 0 ||
-                    is_multicast_ether_addr(sta->sta.addr))) {
-                err = -EINVAL;
+                    is_multicast_ether_addr(sta->sta.addr)))
+                return -EINVAL;
+
+        return 0;
+}
+
+static int sta_info_insert_ibss(struct sta_info *sta) __acquires(RCU)
+{
+        struct ieee80211_local *local = sta->local;
+        struct ieee80211_sub_if_data *sdata = sta->sdata;
+        unsigned long flags;
+
+        spin_lock_irqsave(&local->sta_lock, flags);
+        /* check if STA exists already */
+        if (sta_info_get_bss_rx(sdata, sta->sta.addr)) {
+                spin_unlock_irqrestore(&local->sta_lock, flags);
                 rcu_read_lock();
-                goto out_free;
+                return -EEXIST;
         }
 
-        /*
-         * In ad-hoc mode, we sometimes need to insert stations
-         * from tasklet context from the RX path. To avoid races,
-         * always do so in that case -- see the comment below.
-         */
-        if (sdata->vif.type == NL80211_IFTYPE_ADHOC) {
-                spin_lock_irqsave(&local->sta_lock, flags);
-                /* check if STA exists already */
-                if (sta_info_get_bss(sdata, sta->sta.addr)) {
-                        spin_unlock_irqrestore(&local->sta_lock, flags);
-                        rcu_read_lock();
-                        err = -EEXIST;
-                        goto out_free;
-                }
-
-                local->num_sta++;
-                local->sta_generation++;
-                smp_mb();
-                sta_info_hash_add(local, sta);
+        local->num_sta++;
+        local->sta_generation++;
+        smp_mb();
+        sta_info_hash_add(local, sta);
 
-                list_add_tail(&sta->list, &local->sta_pending_list);
+        list_add_tail(&sta->list, &local->sta_pending_list);
 
-                rcu_read_lock();
-                spin_unlock_irqrestore(&local->sta_lock, flags);
+        rcu_read_lock();
+        spin_unlock_irqrestore(&local->sta_lock, flags);
 
 #ifdef CONFIG_MAC80211_VERBOSE_DEBUG
-                wiphy_debug(local->hw.wiphy, "Added IBSS STA %pM\n",
-                            sta->sta.addr);
+        wiphy_debug(local->hw.wiphy, "Added IBSS STA %pM\n",
+                        sta->sta.addr);
 #endif /* CONFIG_MAC80211_VERBOSE_DEBUG */
 
-                ieee80211_queue_work(&local->hw, &local->sta_finish_work);
+        ieee80211_queue_work(&local->hw, &local->sta_finish_work);
 
-                return 0;
-        }
+        return 0;
+}
+
+/*
+ * should be called with sta_mtx locked
+ * this function replaces the mutex lock
+ * with a RCU lock
+ */
+static int sta_info_insert_non_ibss(struct sta_info *sta) __acquires(RCU)
+{
+        struct ieee80211_local *local = sta->local;
+        struct ieee80211_sub_if_data *sdata = sta->sdata;
+        unsigned long flags;
+        struct sta_info *exist_sta;
+        bool dummy_reinsert = false;
+        int err = 0;
+
+        lockdep_assert_held(&local->sta_mtx);
 
         /*
          * On first glance, this will look racy, because the code
-         * below this point, which inserts a station with sleeping,
+         * in this function, which inserts a station with sleeping,
          * unlocks the sta_lock between checking existence in the
          * hash table and inserting into it.
          *
          * However, it is not racy against itself because it keeps
-         * the mutex locked. It still seems to race against the
-         * above code that atomically inserts the station... That,
-         * however, is not true because the above code can only
-         * be invoked for IBSS interfaces, and the below code will
-         * not be -- and the two do not race against each other as
-         * the hash table also keys off the interface.
+         * the mutex locked.
          */
 
-        might_sleep();
-
-        mutex_lock(&local->sta_mtx);
-
         spin_lock_irqsave(&local->sta_lock, flags);
-        /* check if STA exists already */
-        if (sta_info_get_bss(sdata, sta->sta.addr)) {
-                spin_unlock_irqrestore(&local->sta_lock, flags);
-                mutex_unlock(&local->sta_mtx);
-                rcu_read_lock();
-                err = -EEXIST;
-                goto out_free;
+        /*
+         * check if STA exists already.
+         * only accept a scenario of a second call to sta_info_insert_non_ibss
+         * with a dummy station entry that was inserted earlier
+         * in that case - assume that the dummy station flag should
+         * be removed.
+         */
+        exist_sta = sta_info_get_bss_rx(sdata, sta->sta.addr);
+        if (exist_sta) {
+                if (exist_sta == sta && sta->dummy) {
+                        dummy_reinsert = true;
+                } else {
+                        spin_unlock_irqrestore(&local->sta_lock, flags);
+                        mutex_unlock(&local->sta_mtx);
+                        rcu_read_lock();
+                        return -EEXIST;
+                }
         }
 
         spin_unlock_irqrestore(&local->sta_lock, flags);
 
-        err = sta_info_finish_insert(sta, false);
+        err = sta_info_finish_insert(sta, false, dummy_reinsert);
         if (err) {
                 mutex_unlock(&local->sta_mtx);
                 rcu_read_lock();
-                goto out_free;
+                return err;
         }
 
 #ifdef CONFIG_MAC80211_VERBOSE_DEBUG
-        wiphy_debug(local->hw.wiphy, "Inserted STA %pM\n", sta->sta.addr);
+        wiphy_debug(local->hw.wiphy, "Inserted %sSTA %pM\n",
+                        sta->dummy ? "dummy " : "", sta->sta.addr);
 #endif /* CONFIG_MAC80211_VERBOSE_DEBUG */
 
         /* move reference to rcu-protected */
@@ -477,6 +555,51 @@ int sta_info_insert_rcu(struct sta_info *sta) __acquires(RCU)
                 mesh_accept_plinks_update(sdata);
 
         return 0;
+}
+
+int sta_info_insert_rcu(struct sta_info *sta) __acquires(RCU)
+{
+        struct ieee80211_local *local = sta->local;
+        struct ieee80211_sub_if_data *sdata = sta->sdata;
+        int err = 0;
+
+        err = sta_info_insert_check(sta);
+        if (err) {
+                rcu_read_lock();
+                goto out_free;
+        }
+
+        /*
+         * In ad-hoc mode, we sometimes need to insert stations
+         * from tasklet context from the RX path. To avoid races,
+         * always do so in that case -- see the comment below.
+         */
+        if (sdata->vif.type == NL80211_IFTYPE_ADHOC) {
+                err = sta_info_insert_ibss(sta);
+                if (err)
+                        goto out_free;
+
+                return 0;
+        }
+
+        /*
+         * It might seem that the function called below is in race against
+         * the function call above that atomically inserts the station... That,
+         * however, is not true because the above code can only
+         * be invoked for IBSS interfaces, and the below code will
+         * not be -- and the two do not race against each other as
+         * the hash table also keys off the interface.
+         */
+
+        might_sleep();
+
+        mutex_lock(&local->sta_mtx);
+
+        err = sta_info_insert_non_ibss(sta);
+        if (err)
+                goto out_free;
+
+        return 0;
  out_free:
         BUG_ON(!err);
         __sta_info_free(local, sta);
@@ -492,6 +615,25 @@ int sta_info_insert(struct sta_info *sta)
         return err;
 }
 
+/* Caller must hold sta->local->sta_mtx */
+int sta_info_reinsert(struct sta_info *sta)
+{
+        struct ieee80211_local *local = sta->local;
+        int err = 0;
+
+        err = sta_info_insert_check(sta);
+        if (err) {
+                mutex_unlock(&local->sta_mtx);
+                return err;
+        }
+
+        might_sleep();
+
+        err = sta_info_insert_non_ibss(sta);
+        rcu_read_unlock();
+        return err;
+}
+
 static inline void __bss_tim_set(struct ieee80211_if_ap *bss, u16 aid)
 {
         /*
@@ -510,64 +652,93 @@ static inline void __bss_tim_clear(struct ieee80211_if_ap *bss, u16 aid)
         bss->tim[aid / 8] &= ~(1 << (aid % 8));
 }
 
-static void __sta_info_set_tim_bit(struct ieee80211_if_ap *bss,
-                                   struct sta_info *sta)
+static unsigned long ieee80211_tids_for_ac(int ac)
 {
-        BUG_ON(!bss);
-
-        __bss_tim_set(bss, sta->sta.aid);
-
-        if (sta->local->ops->set_tim) {
-                sta->local->tim_in_locked_section = true;
-                drv_set_tim(sta->local, &sta->sta, true);
-                sta->local->tim_in_locked_section = false;
+        /* If we ever support TIDs > 7, this obviously needs to be adjusted */
+        switch (ac) {
+        case IEEE80211_AC_VO:
+                return BIT(6) | BIT(7);
+        case IEEE80211_AC_VI:
+                return BIT(4) | BIT(5);
+        case IEEE80211_AC_BE:
+                return BIT(0) | BIT(3);
+        case IEEE80211_AC_BK:
+                return BIT(1) | BIT(2);
+        default:
+                WARN_ON(1);
+                return 0;
         }
 }
 
-void sta_info_set_tim_bit(struct sta_info *sta)
+void sta_info_recalc_tim(struct sta_info *sta)
 {
+        struct ieee80211_local *local = sta->local;
+        struct ieee80211_if_ap *bss = sta->sdata->bss;
         unsigned long flags;
+        bool indicate_tim = false;
+        u8 ignore_for_tim = sta->sta.uapsd_queues;
+        int ac;
 
-        BUG_ON(!sta->sdata->bss);
+        if (WARN_ON_ONCE(!sta->sdata->bss))
+                return;
 
-        spin_lock_irqsave(&sta->local->sta_lock, flags);
-        __sta_info_set_tim_bit(sta->sdata->bss, sta);
-        spin_unlock_irqrestore(&sta->local->sta_lock, flags);
-}
+        /* No need to do anything if the driver does all */
+        if (local->hw.flags & IEEE80211_HW_AP_LINK_PS)
+                return;
 
-static void __sta_info_clear_tim_bit(struct ieee80211_if_ap *bss,
-                                     struct sta_info *sta)
-{
-        BUG_ON(!bss);
+        if (sta->dead)
+                goto done;
+
+        /*
+         * If all ACs are delivery-enabled then we should build
+         * the TIM bit for all ACs anyway; if only some are then
+         * we ignore those and build the TIM bit using only the
+         * non-enabled ones.
+         */
+        if (ignore_for_tim == BIT(IEEE80211_NUM_ACS) - 1)
+                ignore_for_tim = 0;
+
+        for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) {
+                unsigned long tids;
 
-        __bss_tim_clear(bss, sta->sta.aid);
+                if (ignore_for_tim & BIT(ac))
+                        continue;
+
+                indicate_tim |= !skb_queue_empty(&sta->tx_filtered[ac]) ||
+                                !skb_queue_empty(&sta->ps_tx_buf[ac]);
+                if (indicate_tim)
+                        break;
 
-        if (sta->local->ops->set_tim) {
-                sta->local->tim_in_locked_section = true;
-                drv_set_tim(sta->local, &sta->sta, false);
-                sta->local->tim_in_locked_section = false;
+                tids = ieee80211_tids_for_ac(ac);
+
+                indicate_tim |=
+                        sta->driver_buffered_tids & tids;
         }
-}
 
-void sta_info_clear_tim_bit(struct sta_info *sta)
-{
-        unsigned long flags;
+ done:
+        spin_lock_irqsave(&local->sta_lock, flags);
 
-        BUG_ON(!sta->sdata->bss);
+        if (indicate_tim)
+                __bss_tim_set(bss, sta->sta.aid);
+        else
+                __bss_tim_clear(bss, sta->sta.aid);
 
-        spin_lock_irqsave(&sta->local->sta_lock, flags);
-        __sta_info_clear_tim_bit(sta->sdata->bss, sta);
-        spin_unlock_irqrestore(&sta->local->sta_lock, flags);
+        if (local->ops->set_tim) {
+                local->tim_in_locked_section = true;
+                drv_set_tim(local, &sta->sta, indicate_tim);
+                local->tim_in_locked_section = false;
+        }
+
+        spin_unlock_irqrestore(&local->sta_lock, flags);
 }
 
-static int sta_info_buffer_expired(struct sta_info *sta,
-                                   struct sk_buff *skb)
+static bool sta_info_buffer_expired(struct sta_info *sta, struct sk_buff *skb)
 {
         struct ieee80211_tx_info *info;
         int timeout;
 
         if (!skb)
-                return 0;
+                return false;
 
         info = IEEE80211_SKB_CB(skb);
 
@@ -581,24 +752,59 @@ static int sta_info_buffer_expired(struct sta_info *sta,
 }
 
 
-static bool sta_info_cleanup_expire_buffered(struct ieee80211_local *local,
-                                             struct sta_info *sta)
+static bool sta_info_cleanup_expire_buffered_ac(struct ieee80211_local *local,
+                                                struct sta_info *sta, int ac)
 {
         unsigned long flags;
         struct sk_buff *skb;
 
-        if (skb_queue_empty(&sta->ps_tx_buf))
-                return false;
+        /*
+         * First check for frames that should expire on the filtered
+         * queue. Frames here were rejected by the driver and are on
+         * a separate queue to avoid reordering with normal PS-buffered
+         * frames. They also aren't accounted for right now in the
+         * total_ps_buffered counter.
+         */
+        for (;;) {
+                spin_lock_irqsave(&sta->tx_filtered[ac].lock, flags);
+                skb = skb_peek(&sta->tx_filtered[ac]);
+                if (sta_info_buffer_expired(sta, skb))
+                        skb = __skb_dequeue(&sta->tx_filtered[ac]);
+                else
+                        skb = NULL;
+                spin_unlock_irqrestore(&sta->tx_filtered[ac].lock, flags);
 
+                /*
+                 * Frames are queued in order, so if this one
+                 * hasn't expired yet we can stop testing. If
+                 * we actually reached the end of the queue we
+                 * also need to stop, of course.
+                 */
+                if (!skb)
+                        break;
+                dev_kfree_skb(skb);
+        }
+
+        /*
+         * Now also check the normal PS-buffered queue, this will
+         * only find something if the filtered queue was emptied
+         * since the filtered frames are all before the normal PS
+         * buffered frames.
+         */
         for (;;) {
-                spin_lock_irqsave(&sta->ps_tx_buf.lock, flags);
-                skb = skb_peek(&sta->ps_tx_buf);
+                spin_lock_irqsave(&sta->ps_tx_buf[ac].lock, flags);
+                skb = skb_peek(&sta->ps_tx_buf[ac]);
                 if (sta_info_buffer_expired(sta, skb))
-                        skb = __skb_dequeue(&sta->ps_tx_buf);
+                        skb = __skb_dequeue(&sta->ps_tx_buf[ac]);
                 else
                         skb = NULL;
-                spin_unlock_irqrestore(&sta->ps_tx_buf.lock, flags);
+                spin_unlock_irqrestore(&sta->ps_tx_buf[ac].lock, flags);
 
+                /*
+                 * frames are queued in order, so if this one
+                 * hasn't expired yet (or we reached the end of
+                 * the queue) we can stop testing
+                 */
                 if (!skb)
                         break;
 
@@ -608,22 +814,47 @@ static bool sta_info_cleanup_expire_buffered(struct ieee80211_local *local,
                        sta->sta.addr);
 #endif
                 dev_kfree_skb(skb);
-
-                if (skb_queue_empty(&sta->ps_tx_buf) &&
-                    !test_sta_flags(sta, WLAN_STA_PS_DRIVER_BUF))
-                        sta_info_clear_tim_bit(sta);
         }
 
-        return true;
+        /*
+         * Finally, recalculate the TIM bit for this station -- it might
+         * now be clear because the station was too slow to retrieve its
+         * frames.
+         */
+        sta_info_recalc_tim(sta);
+
+        /*
+         * Return whether there are any frames still buffered, this is
+         * used to check whether the cleanup timer still needs to run,
+         * if there are no frames we don't need to rearm the timer.
+         */
+        return !(skb_queue_empty(&sta->ps_tx_buf[ac]) &&
+                 skb_queue_empty(&sta->tx_filtered[ac]));
+}
+
+static bool sta_info_cleanup_expire_buffered(struct ieee80211_local *local,
+                                             struct sta_info *sta)
+{
+        bool have_buffered = false;
+        int ac;
+
+        /* This is only necessary for stations on BSS interfaces */
+        if (!sta->sdata->bss)
+                return false;
+
+        for (ac = 0; ac < IEEE80211_NUM_ACS; ac++)
+                have_buffered |=
+                        sta_info_cleanup_expire_buffered_ac(local, sta, ac);
+
+        return have_buffered;
 }
 
 static int __must_check __sta_info_destroy(struct sta_info *sta)
 {
         struct ieee80211_local *local;
         struct ieee80211_sub_if_data *sdata;
-        struct sk_buff *skb;
         unsigned long flags;
-        int ret, i;
+        int ret, i, ac;
 
         might_sleep();
 
@@ -639,7 +870,7 @@ static int __must_check __sta_info_destroy(struct sta_info *sta)
          * sessions -- block that to make sure the tear-down
          * will be sufficient.
          */
-        set_sta_flags(sta, WLAN_STA_BLOCK_BA);
+        set_sta_flag(sta, WLAN_STA_BLOCK_BA);
         ieee80211_sta_tear_down_BA_sessions(sta, true);
 
         spin_lock_irqsave(&local->sta_lock, flags);
@@ -660,19 +891,22 @@ static int __must_check __sta_info_destroy(struct sta_info *sta)
 
         sta->dead = true;
 
-        if (test_and_clear_sta_flags(sta,
-                                WLAN_STA_PS_STA | WLAN_STA_PS_DRIVER)) {
+        if (test_sta_flag(sta, WLAN_STA_PS_STA) ||
+            test_sta_flag(sta, WLAN_STA_PS_DRIVER)) {
                 BUG_ON(!sdata->bss);
 
+                clear_sta_flag(sta, WLAN_STA_PS_STA);
+                clear_sta_flag(sta, WLAN_STA_PS_DRIVER);
+
                 atomic_dec(&sdata->bss->num_sta_ps);
-                sta_info_clear_tim_bit(sta);
+                sta_info_recalc_tim(sta);
         }
 
         local->num_sta--;
         local->sta_generation++;
 
         if (sdata->vif.type == NL80211_IFTYPE_AP_VLAN)
-                rcu_assign_pointer(sdata->u.vlan.sta, NULL);
+                RCU_INIT_POINTER(sdata->u.vlan.sta, NULL);
 
         if (sta->uploaded) {
                 if (sdata->vif.type == NL80211_IFTYPE_AP_VLAN)
@@ -691,6 +925,12 @@ static int __must_check __sta_info_destroy(struct sta_info *sta)
          */
         synchronize_rcu();
 
+        for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) {
+                local->total_ps_buffered -= skb_queue_len(&sta->ps_tx_buf[ac]);
+                __skb_queue_purge(&sta->ps_tx_buf[ac]);
+                __skb_queue_purge(&sta->tx_filtered[ac]);
+        }
+
 #ifdef CONFIG_MAC80211_MESH
         if (ieee80211_vif_is_mesh(&sdata->vif))
                 mesh_accept_plinks_update(sdata);
@@ -713,14 +953,6 @@ static int __must_check __sta_info_destroy(struct sta_info *sta)
         }
 #endif
 
-        while ((skb = skb_dequeue(&sta->ps_tx_buf)) != NULL) {
-                local->total_ps_buffered--;
-                dev_kfree_skb_any(skb);
-        }
-
-        while ((skb = skb_dequeue(&sta->tx_filtered)) != NULL)
-                dev_kfree_skb_any(skb);
-
         __sta_info_free(local, sta);
 
         return 0;
@@ -732,7 +964,7 @@ int sta_info_destroy_addr(struct ieee80211_sub_if_data *sdata, const u8 *addr)
         int ret;
 
         mutex_lock(&sdata->local->sta_mtx);
-        sta = sta_info_get(sdata, addr);
+        sta = sta_info_get_rx(sdata, addr);
         ret = __sta_info_destroy(sta);
         mutex_unlock(&sdata->local->sta_mtx);
 
@@ -746,7 +978,7 @@ int sta_info_destroy_addr_bss(struct ieee80211_sub_if_data *sdata,
         int ret;
 
         mutex_lock(&sdata->local->sta_mtx);
-        sta = sta_info_get_bss(sdata, addr);
+        sta = sta_info_get_bss_rx(sdata, addr);
         ret = __sta_info_destroy(sta);
         mutex_unlock(&sdata->local->sta_mtx);
 
@@ -886,7 +1118,8 @@ static void clear_sta_ps_flags(void *_sta)
 {
         struct sta_info *sta = _sta;
 
-        clear_sta_flags(sta, WLAN_STA_PS_DRIVER | WLAN_STA_PS_STA);
+        clear_sta_flag(sta, WLAN_STA_PS_DRIVER);
+        clear_sta_flag(sta, WLAN_STA_PS_STA);
 }
 
 /* powersave support code */
@@ -894,88 +1127,341 @@ void ieee80211_sta_ps_deliver_wakeup(struct sta_info *sta)
 {
         struct ieee80211_sub_if_data *sdata = sta->sdata;
         struct ieee80211_local *local = sdata->local;
-        int sent, buffered;
+        struct sk_buff_head pending;
+        int filtered = 0, buffered = 0, ac;
+
+        clear_sta_flag(sta, WLAN_STA_SP);
+
+        BUILD_BUG_ON(BITS_TO_LONGS(STA_TID_NUM) > 1);
+        sta->driver_buffered_tids = 0;
 
-        clear_sta_flags(sta, WLAN_STA_PS_DRIVER_BUF);
         if (!(local->hw.flags & IEEE80211_HW_AP_LINK_PS))
                 drv_sta_notify(local, sdata, STA_NOTIFY_AWAKE, &sta->sta);
 
-        if (!skb_queue_empty(&sta->ps_tx_buf))
-                sta_info_clear_tim_bit(sta);
+        skb_queue_head_init(&pending);
 
         /* Send all buffered frames to the station */
-        sent = ieee80211_add_pending_skbs(local, &sta->tx_filtered);
-        buffered = ieee80211_add_pending_skbs_fn(local, &sta->ps_tx_buf,
-                                                 clear_sta_ps_flags, sta);
-        sent += buffered;
+        for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) {
+                int count = skb_queue_len(&pending), tmp;
+
+                skb_queue_splice_tail_init(&sta->tx_filtered[ac], &pending);
+                tmp = skb_queue_len(&pending);
+                filtered += tmp - count;
+                count = tmp;
+
+                skb_queue_splice_tail_init(&sta->ps_tx_buf[ac], &pending);
+                tmp = skb_queue_len(&pending);
+                buffered += tmp - count;
+        }
+
+        ieee80211_add_pending_skbs_fn(local, &pending, clear_sta_ps_flags, sta);
+
         local->total_ps_buffered -= buffered;
 
+        sta_info_recalc_tim(sta);
+
 #ifdef CONFIG_MAC80211_VERBOSE_PS_DEBUG
         printk(KERN_DEBUG "%s: STA %pM aid %d sending %d filtered/%d PS frames "
                "since STA not sleeping anymore\n", sdata->name,
-               sta->sta.addr, sta->sta.aid, sent - buffered, buffered);
+               sta->sta.addr, sta->sta.aid, filtered, buffered);
 #endif /* CONFIG_MAC80211_VERBOSE_PS_DEBUG */
 }
 
-void ieee80211_sta_ps_deliver_poll_response(struct sta_info *sta)
+static void ieee80211_send_null_response(struct ieee80211_sub_if_data *sdata,
+                                         struct sta_info *sta, int tid,
+                                         enum ieee80211_frame_release_type reason)
 {
-        struct ieee80211_sub_if_data *sdata = sta->sdata;
         struct ieee80211_local *local = sdata->local;
+        struct ieee80211_qos_hdr *nullfunc;
         struct sk_buff *skb;
-        int no_pending_pkts;
+        int size = sizeof(*nullfunc);
+        __le16 fc;
+        bool qos = test_sta_flag(sta, WLAN_STA_WME);
+        struct ieee80211_tx_info *info;
 
-        skb = skb_dequeue(&sta->tx_filtered);
-        if (!skb) {
-                skb = skb_dequeue(&sta->ps_tx_buf);
-                if (skb)
-                        local->total_ps_buffered--;
+        if (qos) {
+                fc = cpu_to_le16(IEEE80211_FTYPE_DATA |
+                                 IEEE80211_STYPE_QOS_NULLFUNC |
+                                 IEEE80211_FCTL_FROMDS);
+        } else {
+                size -= 2;
+                fc = cpu_to_le16(IEEE80211_FTYPE_DATA |
+                                 IEEE80211_STYPE_NULLFUNC |
+                                 IEEE80211_FCTL_FROMDS);
+        }
+
+        skb = dev_alloc_skb(local->hw.extra_tx_headroom + size);
+        if (!skb)
+                return;
+
+        skb_reserve(skb, local->hw.extra_tx_headroom);
+
+        nullfunc = (void *) skb_put(skb, size);
+        nullfunc->frame_control = fc;
+        nullfunc->duration_id = 0;
+        memcpy(nullfunc->addr1, sta->sta.addr, ETH_ALEN);
+        memcpy(nullfunc->addr2, sdata->vif.addr, ETH_ALEN);
+        memcpy(nullfunc->addr3, sdata->vif.addr, ETH_ALEN);
+
+        skb->priority = tid;
+        skb_set_queue_mapping(skb, ieee802_1d_to_ac[tid]);
+        if (qos) {
+                nullfunc->qos_ctrl = cpu_to_le16(tid);
+
+                if (reason == IEEE80211_FRAME_RELEASE_UAPSD)
+                        nullfunc->qos_ctrl |=
+                                cpu_to_le16(IEEE80211_QOS_CTL_EOSP);
         }
-        no_pending_pkts = skb_queue_empty(&sta->tx_filtered) &&
-                skb_queue_empty(&sta->ps_tx_buf);
 
-        if (skb) {
-                struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
-                struct ieee80211_hdr *hdr =
-                        (struct ieee80211_hdr *) skb->data;
+        info = IEEE80211_SKB_CB(skb);
+
+        /*
+         * Tell TX path to send this frame even though the
+         * STA may still remain is PS mode after this frame
+         * exchange. Also set EOSP to indicate this packet
+         * ends the poll/service period.
+         */
+        info->flags |= IEEE80211_TX_CTL_POLL_RESPONSE |
+                       IEEE80211_TX_STATUS_EOSP |
+                       IEEE80211_TX_CTL_REQ_TX_STATUS;
+
+        drv_allow_buffered_frames(local, sta, BIT(tid), 1, reason, false);
+
+        ieee80211_xmit(sdata, skb);
+}
+
+static void
+ieee80211_sta_ps_deliver_response(struct sta_info *sta,
+                                  int n_frames, u8 ignored_acs,
+                                  enum ieee80211_frame_release_type reason)
+{
+        struct ieee80211_sub_if_data *sdata = sta->sdata;
+        struct ieee80211_local *local = sdata->local;
+        bool found = false;
+        bool more_data = false;
+        int ac;
+        unsigned long driver_release_tids = 0;
+        struct sk_buff_head frames;
+
+        /* Service or PS-Poll period starts */
+        set_sta_flag(sta, WLAN_STA_SP);
+
+        __skb_queue_head_init(&frames);
+
+        /*
+         * Get response frame(s) and more data bit for it.
+         */
+        for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) {
+                unsigned long tids;
+
+                if (ignored_acs & BIT(ac))
+                        continue;
+
+                tids = ieee80211_tids_for_ac(ac);
+
+                if (!found) {
+                        driver_release_tids = sta->driver_buffered_tids & tids;
+                        if (driver_release_tids) {
+                                found = true;
+                        } else {
+                                struct sk_buff *skb;
+
+                                while (n_frames > 0) {
+                                        skb = skb_dequeue(&sta->tx_filtered[ac]);
+                                        if (!skb) {
+                                                skb = skb_dequeue(
+                                                        &sta->ps_tx_buf[ac]);
+                                                if (skb)
+                                                        local->total_ps_buffered--;
+                                        }
+                                        if (!skb)
+                                                break;
+                                        n_frames--;
+                                        found = true;
+                                        __skb_queue_tail(&frames, skb);
+                                }
+                        }
+
+                        /*
+                         * If the driver has data on more than one TID then
+                         * certainly there's more data if we release just a
+                         * single frame now (from a single TID).
+                         */
+                        if (reason == IEEE80211_FRAME_RELEASE_PSPOLL &&
+                            hweight16(driver_release_tids) > 1) {
+                                more_data = true;
+                                driver_release_tids =
+                                        BIT(ffs(driver_release_tids) - 1);
+                                break;
+                        }
+                }
+
+                if (!skb_queue_empty(&sta->tx_filtered[ac]) ||
+                    !skb_queue_empty(&sta->ps_tx_buf[ac])) {
+                        more_data = true;
+                        break;
+                }
+        }
+
+        if (!found) {
+                int tid;
 
                 /*
-                 * Tell TX path to send this frame even though the STA may
-                 * still remain is PS mode after this frame exchange.
+                 * For PS-Poll, this can only happen due to a race condition
+                 * when we set the TIM bit and the station notices it, but
+                 * before it can poll for the frame we expire it.
+                 *
+                 * For uAPSD, this is said in the standard (11.2.1.5 h):
+                 *      At each unscheduled SP for a non-AP STA, the AP shall
+                 *      attempt to transmit at least one MSDU or MMPDU, but no
+                 *      more than the value specified in the Max SP Length field
+                 *      in the QoS Capability element from delivery-enabled ACs,
+                 *      that are destined for the non-AP STA.
+                 *
+                 * Since we have no other MSDU/MMPDU, transmit a QoS null frame.
                  */
-                info->flags |= IEEE80211_TX_CTL_PSPOLL_RESPONSE;
 
-#ifdef CONFIG_MAC80211_VERBOSE_PS_DEBUG
-                printk(KERN_DEBUG "STA %pM aid %d: PS Poll (entries after %d)\n",
-                       sta->sta.addr, sta->sta.aid,
-                       skb_queue_len(&sta->ps_tx_buf));
-#endif /* CONFIG_MAC80211_VERBOSE_PS_DEBUG */
+                /* This will evaluate to 1, 3, 5 or 7. */
+                tid = 7 - ((ffs(~ignored_acs) - 1) << 1);
 
-                /* Use MoreData flag to indicate whether there are more
-                 * buffered frames for this STA */
-                if (no_pending_pkts)
-                        hdr->frame_control &= cpu_to_le16(~IEEE80211_FCTL_MOREDATA);
-                else
-                        hdr->frame_control |= cpu_to_le16(IEEE80211_FCTL_MOREDATA);
+                ieee80211_send_null_response(sdata, sta, tid, reason);
+                return;
+        }
+
+        if (!driver_release_tids) {
+                struct sk_buff_head pending;
+                struct sk_buff *skb;
+                int num = 0;
+                u16 tids = 0;
+
+                skb_queue_head_init(&pending);
+
+                while ((skb = __skb_dequeue(&frames))) {
+                        struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
+                        struct ieee80211_hdr *hdr = (void *) skb->data;
+                        u8 *qoshdr = NULL;
+
+                        num++;
+
+                        /*
+                         * Tell TX path to send this frame even though the
+                         * STA may still remain is PS mode after this frame
+                         * exchange.
+                         */
+                        info->flags |= IEEE80211_TX_CTL_POLL_RESPONSE;
+
+                        /*
+                         * Use MoreData flag to indicate whether there are
+                         * more buffered frames for this STA
+                         */
+                        if (!more_data)
+                                hdr->frame_control &=
+                                        cpu_to_le16(~IEEE80211_FCTL_MOREDATA);
+                        else
+                                hdr->frame_control |=
+                                        cpu_to_le16(IEEE80211_FCTL_MOREDATA);
+
+                        if (ieee80211_is_data_qos(hdr->frame_control) ||
+                            ieee80211_is_qos_nullfunc(hdr->frame_control))
+                                qoshdr = ieee80211_get_qos_ctl(hdr);
+
+                        /* set EOSP for the frame */
+                        if (reason == IEEE80211_FRAME_RELEASE_UAPSD &&
+                            qoshdr && skb_queue_empty(&frames))
+                                *qoshdr |= IEEE80211_QOS_CTL_EOSP;
+
+                        info->flags |= IEEE80211_TX_STATUS_EOSP |
+                                       IEEE80211_TX_CTL_REQ_TX_STATUS;
+
+                        if (qoshdr)
+                                tids |= BIT(*qoshdr & IEEE80211_QOS_CTL_TID_MASK);
+                        else
+                                tids |= BIT(0);
+
+                        __skb_queue_tail(&pending, skb);
+                }
 
-                ieee80211_add_pending_skb(local, skb);
+                drv_allow_buffered_frames(local, sta, tids, num,
+                                          reason, more_data);
 
-                if (no_pending_pkts)
-                        sta_info_clear_tim_bit(sta);
-#ifdef CONFIG_MAC80211_VERBOSE_PS_DEBUG
+                ieee80211_add_pending_skbs(local, &pending);
+
+                sta_info_recalc_tim(sta);
         } else {
                 /*
-                 * FIXME: This can be the result of a race condition between
-                 *        us expiring a frame and the station polling for it.
-                 *        Should we send it a null-func frame indicating we
-                 *        have nothing buffered for it?
+                 * We need to release a frame that is buffered somewhere in the
+                 * driver ... it'll have to handle that.
+                 * Note that, as per the comment above, it'll also have to see
+                 * if there is more than just one frame on the specific TID that
+                 * we're releasing from, and it needs to set the more-data bit
+                 * accordingly if we tell it that there's no more data. If we do
+                 * tell it there's more data, then of course the more-data bit
+                 * needs to be set anyway.
+                 */
+                drv_release_buffered_frames(local, sta, driver_release_tids,
+                                            n_frames, reason, more_data);
+
+                /*
+                 * Note that we don't recalculate the TIM bit here as it would
+                 * most likely have no effect at all unless the driver told us
+                 * that the TID became empty before returning here from the
+                 * release function.
+                 * Either way, however, when the driver tells us that the TID
+                 * became empty we'll do the TIM recalculation.
                  */
-                printk(KERN_DEBUG "%s: STA %pM sent PS Poll even "
-                       "though there are no buffered frames for it\n",
-                       sdata->name, sta->sta.addr);
-#endif /* CONFIG_MAC80211_VERBOSE_PS_DEBUG */
         }
 }
 
+void ieee80211_sta_ps_deliver_poll_response(struct sta_info *sta)
+{
+        u8 ignore_for_response = sta->sta.uapsd_queues;
+
+        /*
+         * If all ACs are delivery-enabled then we should reply
+         * from any of them, if only some are enabled we reply
+         * only from the non-enabled ones.
+         */
+        if (ignore_for_response == BIT(IEEE80211_NUM_ACS) - 1)
+                ignore_for_response = 0;
+
+        ieee80211_sta_ps_deliver_response(sta, 1, ignore_for_response,
+                                          IEEE80211_FRAME_RELEASE_PSPOLL);
+}
+
+void ieee80211_sta_ps_deliver_uapsd(struct sta_info *sta)
+{
+        int n_frames = sta->sta.max_sp;
+        u8 delivery_enabled = sta->sta.uapsd_queues;
+
+        /*
+         * If we ever grow support for TSPEC this might happen if
+         * the TSPEC update from hostapd comes in between a trigger
+         * frame setting WLAN_STA_UAPSD in the RX path and this
+         * actually getting called.
+         */
+        if (!delivery_enabled)
+                return;
+
+        switch (sta->sta.max_sp) {
+        case 1:
+                n_frames = 2;
+                break;
+        case 2:
+                n_frames = 4;
+                break;
+        case 3:
+                n_frames = 6;
+                break;
+        case 0:
+                /* XXX: what is a good value? */
+                n_frames = 8;
+                break;
+        }
+
+        ieee80211_sta_ps_deliver_response(sta, n_frames, ~delivery_enabled,
+                                          IEEE80211_FRAME_RELEASE_UAPSD);
+}
+
 void ieee80211_sta_block_awake(struct ieee80211_hw *hw,
                                struct ieee80211_sta *pubsta, bool block)
 {
@@ -984,17 +1470,50 @@ void ieee80211_sta_block_awake(struct ieee80211_hw *hw,
         trace_api_sta_block_awake(sta->local, pubsta, block);
 
         if (block)
-                set_sta_flags(sta, WLAN_STA_PS_DRIVER);
-        else if (test_sta_flags(sta, WLAN_STA_PS_DRIVER))
+                set_sta_flag(sta, WLAN_STA_PS_DRIVER);
+        else if (test_sta_flag(sta, WLAN_STA_PS_DRIVER))
                 ieee80211_queue_work(hw, &sta->drv_unblock_wk);
 }
 EXPORT_SYMBOL(ieee80211_sta_block_awake);
 
-void ieee80211_sta_set_tim(struct ieee80211_sta *pubsta)
+void ieee80211_sta_eosp_irqsafe(struct ieee80211_sta *pubsta)
 {
         struct sta_info *sta = container_of(pubsta, struct sta_info, sta);
+        struct ieee80211_local *local = sta->local;
+        struct sk_buff *skb;
+        struct skb_eosp_msg_data *data;
+
+        trace_api_eosp(local, pubsta);
+
+        skb = alloc_skb(0, GFP_ATOMIC);
+        if (!skb) {
+                /* too bad ... but race is better than loss */
+                clear_sta_flag(sta, WLAN_STA_SP);
+                return;
+        }
+
+        data = (void *)skb->cb;
+        memcpy(data->sta, pubsta->addr, ETH_ALEN);
+        memcpy(data->iface, sta->sdata->vif.addr, ETH_ALEN);
+        skb->pkt_type = IEEE80211_EOSP_MSG;
+        skb_queue_tail(&local->skb_queue, skb);
+        tasklet_schedule(&local->tasklet);
+}
+EXPORT_SYMBOL(ieee80211_sta_eosp_irqsafe);
+
+void ieee80211_sta_set_buffered(struct ieee80211_sta *pubsta,
+                                u8 tid, bool buffered)
+{
+        struct sta_info *sta = container_of(pubsta, struct sta_info, sta);
+
+        if (WARN_ON(tid >= STA_TID_NUM))
+                return;
+
+        if (buffered)
+                set_bit(tid, &sta->driver_buffered_tids);
+        else
+                clear_bit(tid, &sta->driver_buffered_tids);
 
-        set_sta_flags(sta, WLAN_STA_PS_DRIVER_BUF);
-        sta_info_set_tim_bit(sta);
+        sta_info_recalc_tim(sta);
 }
-EXPORT_SYMBOL(ieee80211_sta_set_tim);
+EXPORT_SYMBOL(ieee80211_sta_set_buffered);
diff --git a/net/mac80211/sta_info.h b/net/mac80211/sta_info.h
index 28beb78e601e..8c8ce05ad26f 100644
--- a/net/mac80211/sta_info.h
+++ b/net/mac80211/sta_info.h
@@ -19,7 +19,8 @@
 /**
  * enum ieee80211_sta_info_flags - Stations flags
  *
- * These flags are used with &struct sta_info's @flags member.
+ * These flags are used with &struct sta_info's @flags member, but
+ * only indirectly with set_sta_flag() and friends.
  *
  * @WLAN_STA_AUTH: Station is authenticated.
  * @WLAN_STA_ASSOC: Station is associated.
@@ -43,24 +44,33 @@
  *      be in the queues
  * @WLAN_STA_PSPOLL: Station sent PS-poll while driver was keeping
  *      station in power-save mode, reply when the driver unblocks.
- * @WLAN_STA_PS_DRIVER_BUF: Station has frames pending in driver internal
- *      buffers. Automatically cleared on station wake-up.
+ * @WLAN_STA_TDLS_PEER: Station is a TDLS peer.
+ * @WLAN_STA_TDLS_PEER_AUTH: This TDLS peer is authorized to send direct
+ *      packets. This means the link is enabled.
+ * @WLAN_STA_UAPSD: Station requested unscheduled SP while driver was
+ *      keeping station in power-save mode, reply when the driver
+ *      unblocks the station.
+ * @WLAN_STA_SP: Station is in a service period, so don't try to
+ *      reply to other uAPSD trigger frames or PS-Poll.
  */
 enum ieee80211_sta_info_flags {
-        WLAN_STA_AUTH           = 1<<0,
-        WLAN_STA_ASSOC          = 1<<1,
-        WLAN_STA_PS_STA         = 1<<2,
-        WLAN_STA_AUTHORIZED     = 1<<3,
-        WLAN_STA_SHORT_PREAMBLE = 1<<4,
-        WLAN_STA_ASSOC_AP       = 1<<5,
-        WLAN_STA_WME            = 1<<6,
-        WLAN_STA_WDS            = 1<<7,
-        WLAN_STA_CLEAR_PS_FILT  = 1<<9,
-        WLAN_STA_MFP            = 1<<10,
-        WLAN_STA_BLOCK_BA       = 1<<11,
-        WLAN_STA_PS_DRIVER      = 1<<12,
-        WLAN_STA_PSPOLL         = 1<<13,
-        WLAN_STA_PS_DRIVER_BUF  = 1<<14,
+        WLAN_STA_AUTH,
+        WLAN_STA_ASSOC,
+        WLAN_STA_PS_STA,
+        WLAN_STA_AUTHORIZED,
+        WLAN_STA_SHORT_PREAMBLE,
+        WLAN_STA_ASSOC_AP,
+        WLAN_STA_WME,
+        WLAN_STA_WDS,
+        WLAN_STA_CLEAR_PS_FILT,
+        WLAN_STA_MFP,
+        WLAN_STA_BLOCK_BA,
+        WLAN_STA_PS_DRIVER,
+        WLAN_STA_PSPOLL,
+        WLAN_STA_TDLS_PEER,
+        WLAN_STA_TDLS_PEER_AUTH,
+        WLAN_STA_UAPSD,
+        WLAN_STA_SP,
 };
 
 #define STA_TID_NUM 16
@@ -86,6 +96,8 @@ enum ieee80211_sta_info_flags {
  * @stop_initiator: initiator of a session stop
  * @tx_stop: TX DelBA frame when stopping
  * @buf_size: reorder buffer size at receiver
+ * @failed_bar_ssn: ssn of the last failed BAR tx attempt
+ * @bar_pending: BAR needs to be re-sent
  *
  * This structure's lifetime is managed by RCU, assignments to
  * the array holding it must hold the aggregation mutex.
@@ -106,6 +118,9 @@ struct tid_ampdu_tx {
         u8 stop_initiator;
         bool tx_stop;
         u8 buf_size;
+
+        u16 failed_bar_ssn;
+        bool bar_pending;
 };
 
 /**
@@ -198,15 +213,16 @@ struct sta_ampdu_mlme {
  * @last_rx_rate_flag: rx status flag of the last data packet
  * @lock: used for locking all fields that require locking, see comments
  *      in the header file.
- * @flaglock: spinlock for flags accesses
  * @drv_unblock_wk: used for driver PS unblocking
  * @listen_interval: listen interval of this station, when we're acting as AP
- * @flags: STA flags, see &enum ieee80211_sta_info_flags
- * @ps_tx_buf: buffer of frames to transmit to this station
- *      when it leaves power saving state
- * @tx_filtered: buffer of frames we already tried to transmit
- *      but were filtered by hardware due to STA having entered
- *      power saving state
+ * @_flags: STA flags, see &enum ieee80211_sta_info_flags, do not use directly
+ * @ps_tx_buf: buffers (per AC) of frames to transmit to this station
+ *      when it leaves power saving state or polls
+ * @tx_filtered: buffers (per AC) of frames we already tried to
+ *      transmit but were filtered by hardware due to STA having
+ *      entered power saving state, these are also delivered to
+ *      the station when it leaves powersave or polls for frames
+ * @driver_buffered_tids: bitmap of TIDs the driver has data buffered on
  * @rx_packets: Number of MSDUs received from this STA
  * @rx_bytes: Number of bytes received from this STA
  * @wep_weak_iv_count: number of weak WEP IVs received from this station
@@ -238,10 +254,12 @@ struct sta_ampdu_mlme {
  * @plink_timer: peer link watch timer
  * @plink_timer_was_running: used by suspend/resume to restore timers
  * @debugfs: debug filesystem info
- * @sta: station information we share with the driver
  * @dead: set to true when sta is unlinked
  * @uploaded: set to true when sta is uploaded to the driver
  * @lost_packets: number of consecutive lost packets
+ * @dummy: indicate a dummy station created for receiving
+ *      EAP frames before association
+ * @sta: station information we share with the driver
  */
 struct sta_info {
         /* General information, mostly static */
@@ -254,7 +272,6 @@ struct sta_info {
         struct rate_control_ref *rate_ctrl;
         void *rate_ctrl_priv;
         spinlock_t lock;
-        spinlock_t flaglock;
 
         struct work_struct drv_unblock_wk;
 
@@ -264,18 +281,16 @@ struct sta_info {
 
         bool uploaded;
 
-        /*
-         * frequently updated, locked with own spinlock (flaglock),
-         * use the accessors defined below
-         */
-        u32 flags;
+        /* use the accessors defined below */
+        unsigned long _flags;
 
         /*
          * STA powersave frame queues, no more than the internal
          * locking required.
          */
-        struct sk_buff_head ps_tx_buf;
-        struct sk_buff_head tx_filtered;
+        struct sk_buff_head ps_tx_buf[IEEE80211_NUM_ACS];
+        struct sk_buff_head tx_filtered[IEEE80211_NUM_ACS];
+        unsigned long driver_buffered_tids;
 
         /* Updated from RX path only, no locking requirements */
         unsigned long rx_packets, rx_bytes;
@@ -336,6 +351,9 @@ struct sta_info {
 
         unsigned int lost_packets;
 
+        /* should be right in front of sta to be in the same cache line */
+        bool dummy;
+
         /* keep last! */
         struct ieee80211_sta sta;
 };
@@ -348,60 +366,28 @@ static inline enum nl80211_plink_state sta_plink_state(struct sta_info *sta)
         return NL80211_PLINK_LISTEN;
 }
 
-static inline void set_sta_flags(struct sta_info *sta, const u32 flags)
+static inline void set_sta_flag(struct sta_info *sta,
+                                enum ieee80211_sta_info_flags flag)
 {
-        unsigned long irqfl;
-
-        spin_lock_irqsave(&sta->flaglock, irqfl);
-        sta->flags |= flags;
-        spin_unlock_irqrestore(&sta->flaglock, irqfl);
+        set_bit(flag, &sta->_flags);
 }
 
-static inline void clear_sta_flags(struct sta_info *sta, const u32 flags)
+static inline void clear_sta_flag(struct sta_info *sta,
+                                  enum ieee80211_sta_info_flags flag)
 {
-        unsigned long irqfl;
-
-        spin_lock_irqsave(&sta->flaglock, irqfl);
-        sta->flags &= ~flags;
-        spin_unlock_irqrestore(&sta->flaglock, irqfl);
+        clear_bit(flag, &sta->_flags);
 }
 
-static inline u32 test_sta_flags(struct sta_info *sta, const u32 flags)
+static inline int test_sta_flag(struct sta_info *sta,
+                                enum ieee80211_sta_info_flags flag)
 {
-        u32 ret;
-        unsigned long irqfl;
-
-        spin_lock_irqsave(&sta->flaglock, irqfl);
-        ret = sta->flags & flags;
-        spin_unlock_irqrestore(&sta->flaglock, irqfl);
-
-        return ret;
-}
-
-static inline u32 test_and_clear_sta_flags(struct sta_info *sta,
-                                           const u32 flags)
-{
-        u32 ret;
-        unsigned long irqfl;
-
-        spin_lock_irqsave(&sta->flaglock, irqfl);
-        ret = sta->flags & flags;
-        sta->flags &= ~flags;
-        spin_unlock_irqrestore(&sta->flaglock, irqfl);
-
-        return ret;
+        return test_bit(flag, &sta->_flags);
 }
 
-static inline u32 get_sta_flags(struct sta_info *sta)
+static inline int test_and_clear_sta_flag(struct sta_info *sta,
+                                          enum ieee80211_sta_info_flags flag)
 {
-        u32 ret;
-        unsigned long irqfl;
-
-        spin_lock_irqsave(&sta->flaglock, irqfl);
-        ret = sta->flags;
-        spin_unlock_irqrestore(&sta->flaglock, irqfl);
-
-        return ret;
+        return test_and_clear_bit(flag, &sta->_flags);
 }
 
 void ieee80211_assign_tid_tx(struct sta_info *sta, int tid,
@@ -419,8 +405,8 @@ rcu_dereference_protected_tid_tx(struct sta_info *sta, int tid)
 #define STA_HASH(sta) (sta[5])
 
 
-/* Maximum number of frames to buffer per power saving station */
-#define STA_MAX_TX_BUFFER 128
+/* Maximum number of frames to buffer per power saving station per AC */
+#define STA_MAX_TX_BUFFER       64
 
 /* Minimum buffered frame expiry time. If STA uses listen interval that is
  * smaller than this value, the minimum value here is used instead. */
@@ -436,9 +422,15 @@ rcu_dereference_protected_tid_tx(struct sta_info *sta, int tid)
 struct sta_info *sta_info_get(struct ieee80211_sub_if_data *sdata,
                               const u8 *addr);
 
+struct sta_info *sta_info_get_rx(struct ieee80211_sub_if_data *sdata,
+                              const u8 *addr);
+
 struct sta_info *sta_info_get_bss(struct ieee80211_sub_if_data *sdata,
                                   const u8 *addr);
 
+struct sta_info *sta_info_get_bss_rx(struct ieee80211_sub_if_data *sdata,
+                                  const u8 *addr);
+
 static inline
 void for_each_sta_info_type_check(struct ieee80211_local *local,
                                   const u8 *addr,
@@ -459,6 +451,22 @@ void for_each_sta_info_type_check(struct ieee80211_local *local,
                 _sta = nxt,                                             \
                 nxt = _sta ? rcu_dereference(_sta->hnext) : NULL        \
              )                                                          \
+        /* run code only if address matches and it's not a dummy sta */ \
+        if (memcmp(_sta->sta.addr, (_addr), ETH_ALEN) == 0 &&           \
+                !_sta->dummy)
+
+#define for_each_sta_info_rx(local, _addr, _sta, nxt)                   \
+        for (   /* initialise loop */                                   \
+                _sta = rcu_dereference(local->sta_hash[STA_HASH(_addr)]),\
+                nxt = _sta ? rcu_dereference(_sta->hnext) : NULL;       \
+                /* typecheck */                                         \
+                for_each_sta_info_type_check(local, (_addr), _sta, nxt),\
+                /* continue condition */                                \
+                _sta;                                                   \
+                /* advance loop */                                      \
+                _sta = nxt,                                             \
+                nxt = _sta ? rcu_dereference(_sta->hnext) : NULL        \
+             )                                                          \
         /* compare address and run code only if it matches */           \
         if (memcmp(_sta->sta.addr, (_addr), ETH_ALEN) == 0)
 
@@ -484,14 +492,14 @@ struct sta_info *sta_info_alloc(struct ieee80211_sub_if_data *sdata,
 int sta_info_insert(struct sta_info *sta);
 int sta_info_insert_rcu(struct sta_info *sta) __acquires(RCU);
 int sta_info_insert_atomic(struct sta_info *sta);
+int sta_info_reinsert(struct sta_info *sta);
 
 int sta_info_destroy_addr(struct ieee80211_sub_if_data *sdata,
                           const u8 *addr);
 int sta_info_destroy_addr_bss(struct ieee80211_sub_if_data *sdata,
                               const u8 *addr);
 
-void sta_info_set_tim_bit(struct sta_info *sta);
-void sta_info_clear_tim_bit(struct sta_info *sta);
+void sta_info_recalc_tim(struct sta_info *sta);
 
 void sta_info_init(struct ieee80211_local *local);
 void sta_info_stop(struct ieee80211_local *local);
@@ -502,5 +510,6 @@ void ieee80211_sta_expire(struct ieee80211_sub_if_data *sdata,
 
 void ieee80211_sta_ps_deliver_wakeup(struct sta_info *sta);
 void ieee80211_sta_ps_deliver_poll_response(struct sta_info *sta);
+void ieee80211_sta_ps_deliver_uapsd(struct sta_info *sta);
 
 #endif /* STA_INFO_H */
diff --git a/net/mac80211/status.c b/net/mac80211/status.c
index 1658efaa2e8e..80de436eae20 100644
--- a/net/mac80211/status.c
+++ b/net/mac80211/status.c
@@ -9,11 +9,13 @@
  * published by the Free Software Foundation.
  */
 
+#include <linux/export.h>
 #include <net/mac80211.h>
 #include "ieee80211_i.h"
 #include "rate.h"
 #include "mesh.h"
 #include "led.h"
+#include "wme.h"
 
 
 void ieee80211_tx_status_irqsafe(struct ieee80211_hw *hw,
@@ -43,6 +45,8 @@ static void ieee80211_handle_filtered_frame(struct ieee80211_local *local,
                                             struct sk_buff *skb)
 {
         struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
+        struct ieee80211_hdr *hdr = (void *)skb->data;
+        int ac;
 
         /*
          * This skb 'survived' a round-trip through the driver, and
@@ -63,11 +67,37 @@ static void ieee80211_handle_filtered_frame(struct ieee80211_local *local,
         sta->tx_filtered_count++;
 
         /*
+         * Clear more-data bit on filtered frames, it might be set
+         * but later frames might time out so it might have to be
+         * clear again ... It's all rather unlikely (this frame
+         * should time out first, right?) but let's not confuse
+         * peers unnecessarily.
+         */
+        if (hdr->frame_control & cpu_to_le16(IEEE80211_FCTL_MOREDATA))
+                hdr->frame_control &= ~cpu_to_le16(IEEE80211_FCTL_MOREDATA);
+
+        if (ieee80211_is_data_qos(hdr->frame_control)) {
+                u8 *p = ieee80211_get_qos_ctl(hdr);
+                int tid = *p & IEEE80211_QOS_CTL_TID_MASK;
+
+                /*
+                 * Clear EOSP if set, this could happen e.g.
+                 * if an absence period (us being a P2P GO)
+                 * shortens the SP.
+                 */
+                if (*p & IEEE80211_QOS_CTL_EOSP)
+                        *p &= ~IEEE80211_QOS_CTL_EOSP;
+                ac = ieee802_1d_to_ac[tid & 7];
+        } else {
+                ac = IEEE80211_AC_BE;
+        }
+
+        /*
          * Clear the TX filter mask for this STA when sending the next
          * packet. If the STA went to power save mode, this will happen
          * when it wakes up for the next time.
          */
-        set_sta_flags(sta, WLAN_STA_CLEAR_PS_FILT);
+        set_sta_flag(sta, WLAN_STA_CLEAR_PS_FILT);
 
         /*
          * This code races in the following way:
@@ -103,13 +133,19 @@ static void ieee80211_handle_filtered_frame(struct ieee80211_local *local,
          *      changes before calling TX status events if ordering can be
          *      unknown.
          */
-        if (test_sta_flags(sta, WLAN_STA_PS_STA) &&
-            skb_queue_len(&sta->tx_filtered) < STA_MAX_TX_BUFFER) {
-                skb_queue_tail(&sta->tx_filtered, skb);
+        if (test_sta_flag(sta, WLAN_STA_PS_STA) &&
+            skb_queue_len(&sta->tx_filtered[ac]) < STA_MAX_TX_BUFFER) {
+                skb_queue_tail(&sta->tx_filtered[ac], skb);
+                sta_info_recalc_tim(sta);
+
+                if (!timer_pending(&local->sta_cleanup))
+                        mod_timer(&local->sta_cleanup,
+                                  round_jiffies(jiffies +
+                                                STA_INFO_CLEANUP_INTERVAL));
                 return;
         }
 
-        if (!test_sta_flags(sta, WLAN_STA_PS_STA) &&
+        if (!test_sta_flag(sta, WLAN_STA_PS_STA) &&
             !(info->flags & IEEE80211_TX_INTFL_RETRIED)) {
                 /* Software retry the packet once */
                 info->flags |= IEEE80211_TX_INTFL_RETRIED;
@@ -121,18 +157,38 @@ static void ieee80211_handle_filtered_frame(struct ieee80211_local *local,
         if (net_ratelimit())
                 wiphy_debug(local->hw.wiphy,
                             "dropped TX filtered frame, queue_len=%d PS=%d @%lu\n",
-                            skb_queue_len(&sta->tx_filtered),
-                            !!test_sta_flags(sta, WLAN_STA_PS_STA), jiffies);
+                            skb_queue_len(&sta->tx_filtered[ac]),
+                            !!test_sta_flag(sta, WLAN_STA_PS_STA), jiffies);
 #endif
         dev_kfree_skb(skb);
 }
 
+static void ieee80211_check_pending_bar(struct sta_info *sta, u8 *addr, u8 tid)
+{
+        struct tid_ampdu_tx *tid_tx;
+
+        tid_tx = rcu_dereference(sta->ampdu_mlme.tid_tx[tid]);
+        if (!tid_tx || !tid_tx->bar_pending)
+                return;
+
+        tid_tx->bar_pending = false;
+        ieee80211_send_bar(&sta->sdata->vif, addr, tid, tid_tx->failed_bar_ssn);
+}
+
 static void ieee80211_frame_acked(struct sta_info *sta, struct sk_buff *skb)
 {
         struct ieee80211_mgmt *mgmt = (void *) skb->data;
         struct ieee80211_local *local = sta->local;
         struct ieee80211_sub_if_data *sdata = sta->sdata;
 
+        if (ieee80211_is_data_qos(mgmt->frame_control)) {
+                struct ieee80211_hdr *hdr = (void *) skb->data;
+                u8 *qc = ieee80211_get_qos_ctl(hdr);
+                u16 tid = qc[0] & 0xf;
+
+                ieee80211_check_pending_bar(sta, hdr->addr1, tid);
+        }
+
         if (ieee80211_is_action(mgmt->frame_control) &&
             sdata->vif.type == NL80211_IFTYPE_STATION &&
             mgmt->u.action.category == WLAN_CATEGORY_HT &&
@@ -161,6 +217,114 @@ static void ieee80211_frame_acked(struct sta_info *sta, struct sk_buff *skb)
         }
 }
 
+static void ieee80211_set_bar_pending(struct sta_info *sta, u8 tid, u16 ssn)
+{
+        struct tid_ampdu_tx *tid_tx;
+
+        tid_tx = rcu_dereference(sta->ampdu_mlme.tid_tx[tid]);
+        if (!tid_tx)
+                return;
+
+        tid_tx->failed_bar_ssn = ssn;
+        tid_tx->bar_pending = true;
+}
+
+static int ieee80211_tx_radiotap_len(struct ieee80211_tx_info *info)
+{
+        int len = sizeof(struct ieee80211_radiotap_header);
+
+        /* IEEE80211_RADIOTAP_RATE rate */
+        if (info->status.rates[0].idx >= 0 &&
+            !(info->status.rates[0].flags & IEEE80211_TX_RC_MCS))
+                len += 2;
+
+        /* IEEE80211_RADIOTAP_TX_FLAGS */
+        len += 2;
+
+        /* IEEE80211_RADIOTAP_DATA_RETRIES */
+        len += 1;
+
+        /* IEEE80211_TX_RC_MCS */
+        if (info->status.rates[0].idx >= 0 &&
+            info->status.rates[0].flags & IEEE80211_TX_RC_MCS)
+                len += 3;
+
+        return len;
+}
+
+static void ieee80211_add_tx_radiotap_header(struct ieee80211_supported_band
+                                             *sband, struct sk_buff *skb,
+                                             int retry_count, int rtap_len)
+{
+        struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
+        struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
+        struct ieee80211_radiotap_header *rthdr;
+        unsigned char *pos;
+        __le16 txflags;
+
+        rthdr = (struct ieee80211_radiotap_header *) skb_push(skb, rtap_len);
+
+        memset(rthdr, 0, rtap_len);
+        rthdr->it_len = cpu_to_le16(rtap_len);
+        rthdr->it_present =
+                cpu_to_le32((1 << IEEE80211_RADIOTAP_TX_FLAGS) |
+                            (1 << IEEE80211_RADIOTAP_DATA_RETRIES));
+        pos = (unsigned char *)(rthdr + 1);
+
+        /*
+         * XXX: Once radiotap gets the bitmap reset thing the vendor
+         *      extensions proposal contains, we can actually report
+         *      the whole set of tries we did.
+         */
+
+        /* IEEE80211_RADIOTAP_RATE */
+        if (info->status.rates[0].idx >= 0 &&
+            !(info->status.rates[0].flags & IEEE80211_TX_RC_MCS)) {
+                rthdr->it_present |= cpu_to_le32(1 << IEEE80211_RADIOTAP_RATE);
+                *pos = sband->bitrates[info->status.rates[0].idx].bitrate / 5;
+                /* padding for tx flags */
+                pos += 2;
+        }
+
+        /* IEEE80211_RADIOTAP_TX_FLAGS */
+        txflags = 0;
+        if (!(info->flags & IEEE80211_TX_STAT_ACK) &&
+            !is_multicast_ether_addr(hdr->addr1))
+                txflags |= cpu_to_le16(IEEE80211_RADIOTAP_F_TX_FAIL);
+
+        if ((info->status.rates[0].flags & IEEE80211_TX_RC_USE_RTS_CTS) ||
+            (info->status.rates[0].flags & IEEE80211_TX_RC_USE_CTS_PROTECT))
+                txflags |= cpu_to_le16(IEEE80211_RADIOTAP_F_TX_CTS);
+        else if (info->status.rates[0].flags & IEEE80211_TX_RC_USE_RTS_CTS)
+                txflags |= cpu_to_le16(IEEE80211_RADIOTAP_F_TX_RTS);
+
+        put_unaligned_le16(txflags, pos);
+        pos += 2;
+
+        /* IEEE80211_RADIOTAP_DATA_RETRIES */
+        /* for now report the total retry_count */
+        *pos = retry_count;
+        pos++;
+
+        /* IEEE80211_TX_RC_MCS */
+        if (info->status.rates[0].idx >= 0 &&
+            info->status.rates[0].flags & IEEE80211_TX_RC_MCS) {
+                rthdr->it_present |= cpu_to_le32(1 << IEEE80211_RADIOTAP_MCS);
+                pos[0] = IEEE80211_RADIOTAP_MCS_HAVE_MCS |
+                         IEEE80211_RADIOTAP_MCS_HAVE_GI |
+                         IEEE80211_RADIOTAP_MCS_HAVE_BW;
+                if (info->status.rates[0].flags & IEEE80211_TX_RC_SHORT_GI)
+                        pos[1] |= IEEE80211_RADIOTAP_MCS_SGI;
+                if (info->status.rates[0].flags & IEEE80211_TX_RC_40_MHZ_WIDTH)
+                        pos[1] |= IEEE80211_RADIOTAP_MCS_BW_40;
+                if (info->status.rates[0].flags & IEEE80211_TX_RC_GREEN_FIELD)
+                        pos[1] |= IEEE80211_RADIOTAP_MCS_FMT_GF;
+                pos[2] = info->status.rates[0].idx;
+                pos += 3;
+        }
+
+}
+
 /*
  * Use a static threshold for now, best value to be determined
  * by testing ...
@@ -179,7 +343,6 @@ void ieee80211_tx_status(struct ieee80211_hw *hw, struct sk_buff *skb)
         u16 frag, type;
         __le16 fc;
         struct ieee80211_supported_band *sband;
-        struct ieee80211_tx_status_rtap_hdr *rthdr;
         struct ieee80211_sub_if_data *sdata;
         struct net_device *prev_dev = NULL;
         struct sta_info *sta, *tmp;
@@ -187,6 +350,9 @@ void ieee80211_tx_status(struct ieee80211_hw *hw, struct sk_buff *skb)
         int rates_idx = -1;
         bool send_to_cooked;
         bool acked;
+        struct ieee80211_bar *bar;
+        u16 tid;
+        int rtap_len;
 
         for (i = 0; i < IEEE80211_TX_MAX_RATES; i++) {
                 if (info->status.rates[i].idx < 0) {
@@ -215,8 +381,11 @@ void ieee80211_tx_status(struct ieee80211_hw *hw, struct sk_buff *skb)
                 if (memcmp(hdr->addr2, sta->sdata->vif.addr, ETH_ALEN))
                         continue;
 
+                if (info->flags & IEEE80211_TX_STATUS_EOSP)
+                        clear_sta_flag(sta, WLAN_STA_SP);
+
                 acked = !!(info->flags & IEEE80211_TX_STAT_ACK);
-                if (!acked && test_sta_flags(sta, WLAN_STA_PS_STA)) {
+                if (!acked && test_sta_flag(sta, WLAN_STA_PS_STA)) {
                         /*
                          * The STA is in power save mode, so assume
                          * that this TX packet failed because of that.
@@ -239,10 +408,31 @@ void ieee80211_tx_status(struct ieee80211_hw *hw, struct sk_buff *skb)
                         tid = qc[0] & 0xf;
                         ssn = ((le16_to_cpu(hdr->seq_ctrl) + 0x10)
                                                 & IEEE80211_SCTL_SEQ);
-                        ieee80211_send_bar(sta->sdata, hdr->addr1,
+                        ieee80211_send_bar(&sta->sdata->vif, hdr->addr1,
                                            tid, ssn);
                 }
 
+                if (!acked && ieee80211_is_back_req(fc)) {
+                        u16 control;
+
+                        /*
+                         * BAR failed, store the last SSN and retry sending
+                         * the BAR when the next unicast transmission on the
+                         * same TID succeeds.
+                         */
+                        bar = (struct ieee80211_bar *) skb->data;
+                        control = le16_to_cpu(bar->control);
+                        if (!(control & IEEE80211_BAR_CTRL_MULTI_TID)) {
+                                u16 ssn = le16_to_cpu(bar->start_seq_num);
+
+                                tid = (control &
+                                       IEEE80211_BAR_CTRL_TID_INFO_MASK) >>
+                                      IEEE80211_BAR_CTRL_TID_INFO_SHIFT;
+
+                                ieee80211_set_bar_pending(sta, tid, ssn);
+                        }
+                }
+
                 if (info->flags & IEEE80211_TX_STAT_TX_FILTERED) {
                         ieee80211_handle_filtered_frame(local, sta, skb);
                         rcu_read_unlock();
@@ -336,7 +526,7 @@ void ieee80211_tx_status(struct ieee80211_hw *hw, struct sk_buff *skb)
                                 continue;
                         if (wk->offchan_tx.frame != skb)
                                 continue;
-                        wk->offchan_tx.frame = NULL;
+                        wk->offchan_tx.status = true;
                         break;
                 }
                 rcu_read_unlock();
@@ -345,9 +535,6 @@ void ieee80211_tx_status(struct ieee80211_hw *hw, struct sk_buff *skb)
                         local->hw_roc_skb_for_status = NULL;
                 }
 
-                if (cookie == local->hw_offchan_tx_cookie)
-                        local->hw_offchan_tx_cookie = 0;
-
                 cfg80211_mgmt_tx_status(
                         skb->dev, cookie, skb->data, skb->len,
                         !!(info->flags & IEEE80211_TX_STAT_ACK), GFP_ATOMIC);
@@ -370,44 +557,13 @@ void ieee80211_tx_status(struct ieee80211_hw *hw, struct sk_buff *skb)
         }
 
         /* send frame to monitor interfaces now */
-
-        if (skb_headroom(skb) < sizeof(*rthdr)) {
+        rtap_len = ieee80211_tx_radiotap_len(info);
+        if (WARN_ON_ONCE(skb_headroom(skb) < rtap_len)) {
                 printk(KERN_ERR "ieee80211_tx_status: headroom too small\n");
                 dev_kfree_skb(skb);
                 return;
         }
-
-        rthdr = (struct ieee80211_tx_status_rtap_hdr *)
-                                skb_push(skb, sizeof(*rthdr));
-
-        memset(rthdr, 0, sizeof(*rthdr));
-        rthdr->hdr.it_len = cpu_to_le16(sizeof(*rthdr));
-        rthdr->hdr.it_present =
-                cpu_to_le32((1 << IEEE80211_RADIOTAP_TX_FLAGS) |
-                            (1 << IEEE80211_RADIOTAP_DATA_RETRIES) |
-                            (1 << IEEE80211_RADIOTAP_RATE));
-
-        if (!(info->flags & IEEE80211_TX_STAT_ACK) &&
-            !is_multicast_ether_addr(hdr->addr1))
-                rthdr->tx_flags |= cpu_to_le16(IEEE80211_RADIOTAP_F_TX_FAIL);
-
-        /*
-         * XXX: Once radiotap gets the bitmap reset thing the vendor
-         *      extensions proposal contains, we can actually report
-         *      the whole set of tries we did.
-         */
-        if ((info->status.rates[0].flags & IEEE80211_TX_RC_USE_RTS_CTS) ||
-            (info->status.rates[0].flags & IEEE80211_TX_RC_USE_CTS_PROTECT))
-                rthdr->tx_flags |= cpu_to_le16(IEEE80211_RADIOTAP_F_TX_CTS);
-        else if (info->status.rates[0].flags & IEEE80211_TX_RC_USE_RTS_CTS)
-                rthdr->tx_flags |= cpu_to_le16(IEEE80211_RADIOTAP_F_TX_RTS);
-        if (info->status.rates[0].idx >= 0 &&
-            !(info->status.rates[0].flags & IEEE80211_TX_RC_MCS))
-                rthdr->rate = sband->bitrates[
-                                info->status.rates[0].idx].bitrate / 5;
-
-        /* for now report the total retry_count */
-        rthdr->data_retries = retry_count;
+        ieee80211_add_tx_radiotap_header(sband, skb, retry_count, rtap_len);
 
         /* XXX: is this sufficient for BPF? */
         skb_set_mac_header(skb, 0);
diff --git a/net/mac80211/tkip.c b/net/mac80211/tkip.c
index f49d00a4c7fd..51077a956a83 100644
--- a/net/mac80211/tkip.c
+++ b/net/mac80211/tkip.c
@@ -10,6 +10,7 @@
 #include <linux/bitops.h>
 #include <linux/types.h>
 #include <linux/netdevice.h>
+#include <linux/export.h>
 #include <asm/unaligned.h>
 
 #include <net/mac80211.h>
diff --git a/net/mac80211/tx.c b/net/mac80211/tx.c
index 8cb0d2d0ac69..1f8b120146d1 100644
--- a/net/mac80211/tx.c
+++ b/net/mac80211/tx.c
@@ -18,6 +18,7 @@
 #include <linux/etherdevice.h>
 #include <linux/bitmap.h>
 #include <linux/rcupdate.h>
+#include <linux/export.h>
 #include <net/net_namespace.h>
 #include <net/ieee80211_radiotap.h>
 #include <net/cfg80211.h>
@@ -253,7 +254,7 @@ ieee80211_tx_h_check_assoc(struct ieee80211_tx_data *tx)
 
         struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)tx->skb->data;
         struct ieee80211_tx_info *info = IEEE80211_SKB_CB(tx->skb);
-        u32 sta_flags;
+        bool assoc = false;
 
         if (unlikely(info->flags & IEEE80211_TX_CTL_INJECTED))
                 return TX_CONTINUE;
@@ -284,10 +285,11 @@ ieee80211_tx_h_check_assoc(struct ieee80211_tx_data *tx)
         if (tx->flags & IEEE80211_TX_PS_BUFFERED)
                 return TX_CONTINUE;
 
-        sta_flags = tx->sta ? get_sta_flags(tx->sta) : 0;
+        if (tx->sta)
+                assoc = test_sta_flag(tx->sta, WLAN_STA_ASSOC);
 
         if (likely(tx->flags & IEEE80211_TX_UNICAST)) {
-                if (unlikely(!(sta_flags & WLAN_STA_ASSOC) &&
+                if (unlikely(!assoc &&
                              tx->sdata->vif.type != NL80211_IFTYPE_ADHOC &&
                              ieee80211_is_data(hdr->frame_control))) {
 #ifdef CONFIG_MAC80211_VERBOSE_DEBUG
@@ -343,13 +345,22 @@ static void purge_old_ps_buffers(struct ieee80211_local *local)
                 total += skb_queue_len(&ap->ps_bc_buf);
         }
 
+        /*
+         * Drop one frame from each station from the lowest-priority
+         * AC that has frames at all.
+         */
         list_for_each_entry_rcu(sta, &local->sta_list, list) {
-                skb = skb_dequeue(&sta->ps_tx_buf);
-                if (skb) {
-                        purged++;
-                        dev_kfree_skb(skb);
+                int ac;
+
+                for (ac = IEEE80211_AC_BK; ac >= IEEE80211_AC_VO; ac--) {
+                        skb = skb_dequeue(&sta->ps_tx_buf[ac]);
+                        total += skb_queue_len(&sta->ps_tx_buf[ac]);
+                        if (skb) {
+                                purged++;
+                                dev_kfree_skb(skb);
+                                break;
+                        }
                 }
-                total += skb_queue_len(&sta->ps_tx_buf);
         }
 
         rcu_read_unlock();
@@ -418,7 +429,7 @@ static int ieee80211_use_mfp(__le16 fc, struct sta_info *sta,
         if (!ieee80211_is_mgmt(fc))
                 return 0;
 
-        if (sta == NULL || !test_sta_flags(sta, WLAN_STA_MFP))
+        if (sta == NULL || !test_sta_flag(sta, WLAN_STA_MFP))
                 return 0;
 
         if (!ieee80211_is_robust_mgmt_frame((struct ieee80211_hdr *)
@@ -435,7 +446,6 @@ ieee80211_tx_h_unicast_ps_buf(struct ieee80211_tx_data *tx)
         struct ieee80211_tx_info *info = IEEE80211_SKB_CB(tx->skb);
         struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)tx->skb->data;
         struct ieee80211_local *local = tx->local;
-        u32 staflags;
 
         if (unlikely(!sta ||
                      ieee80211_is_probe_resp(hdr->frame_control) ||
@@ -444,57 +454,52 @@ ieee80211_tx_h_unicast_ps_buf(struct ieee80211_tx_data *tx)
                      ieee80211_is_reassoc_resp(hdr->frame_control)))
                 return TX_CONTINUE;
 
-        staflags = get_sta_flags(sta);
+        if (unlikely((test_sta_flag(sta, WLAN_STA_PS_STA) ||
+                      test_sta_flag(sta, WLAN_STA_PS_DRIVER)) &&
+                     !(info->flags & IEEE80211_TX_CTL_POLL_RESPONSE))) {
+                int ac = skb_get_queue_mapping(tx->skb);
 
-        if (unlikely((staflags & (WLAN_STA_PS_STA | WLAN_STA_PS_DRIVER)) &&
-                     !(info->flags & IEEE80211_TX_CTL_PSPOLL_RESPONSE))) {
 #ifdef CONFIG_MAC80211_VERBOSE_PS_DEBUG
-                printk(KERN_DEBUG "STA %pM aid %d: PS buffer (entries "
-                       "before %d)\n",
-                       sta->sta.addr, sta->sta.aid,
-                       skb_queue_len(&sta->ps_tx_buf));
+                printk(KERN_DEBUG "STA %pM aid %d: PS buffer for AC %d\n",
+                       sta->sta.addr, sta->sta.aid, ac);
 #endif /* CONFIG_MAC80211_VERBOSE_PS_DEBUG */
                 if (tx->local->total_ps_buffered >= TOTAL_MAX_TX_BUFFER)
                         purge_old_ps_buffers(tx->local);
-                if (skb_queue_len(&sta->ps_tx_buf) >= STA_MAX_TX_BUFFER) {
-                        struct sk_buff *old = skb_dequeue(&sta->ps_tx_buf);
+                if (skb_queue_len(&sta->ps_tx_buf[ac]) >= STA_MAX_TX_BUFFER) {
+                        struct sk_buff *old = skb_dequeue(&sta->ps_tx_buf[ac]);
 #ifdef CONFIG_MAC80211_VERBOSE_PS_DEBUG
-                        if (net_ratelimit()) {
-                                printk(KERN_DEBUG "%s: STA %pM TX "
-                                       "buffer full - dropping oldest frame\n",
-                                       tx->sdata->name, sta->sta.addr);
-                        }
+                        if (net_ratelimit())
+                                printk(KERN_DEBUG "%s: STA %pM TX buffer for "
+                                       "AC %d full - dropping oldest frame\n",
+                                       tx->sdata->name, sta->sta.addr, ac);
 #endif
                         dev_kfree_skb(old);
                 } else
                         tx->local->total_ps_buffered++;
 
-                /*
-                 * Queue frame to be sent after STA wakes up/polls,
-                 * but don't set the TIM bit if the driver is blocking
-                 * wakeup or poll response transmissions anyway.
-                 */
-                if (skb_queue_empty(&sta->ps_tx_buf) &&
-                    !(staflags & WLAN_STA_PS_DRIVER))
-                        sta_info_set_tim_bit(sta);
-
                 info->control.jiffies = jiffies;
                 info->control.vif = &tx->sdata->vif;
                 info->flags |= IEEE80211_TX_INTFL_NEED_TXPROCESSING;
-                skb_queue_tail(&sta->ps_tx_buf, tx->skb);
+                skb_queue_tail(&sta->ps_tx_buf[ac], tx->skb);
 
                 if (!timer_pending(&local->sta_cleanup))
                         mod_timer(&local->sta_cleanup,
                                   round_jiffies(jiffies +
                                                 STA_INFO_CLEANUP_INTERVAL));
 
+                /*
+                 * We queued up some frames, so the TIM bit might
+                 * need to be set, recalculate it.
+                 */
+                sta_info_recalc_tim(sta);
+
                 return TX_QUEUED;
         }
 #ifdef CONFIG_MAC80211_VERBOSE_PS_DEBUG
-        else if (unlikely(staflags & WLAN_STA_PS_STA)) {
-                printk(KERN_DEBUG "%s: STA %pM in PS mode, but pspoll "
-                       "set -> send frame\n", tx->sdata->name,
-                       sta->sta.addr);
+        else if (unlikely(test_sta_flag(sta, WLAN_STA_PS_STA))) {
+                printk(KERN_DEBUG
+                       "%s: STA %pM in PS mode, but polling/in SP -> send frame\n",
+                       tx->sdata->name, sta->sta.addr);
         }
 #endif /* CONFIG_MAC80211_VERBOSE_PS_DEBUG */
 
@@ -552,7 +557,7 @@ ieee80211_tx_h_select_key(struct ieee80211_tx_data *tx)
                  !(info->flags & IEEE80211_TX_CTL_INJECTED) &&
                  (!ieee80211_is_robust_mgmt_frame(hdr) ||
                   (ieee80211_is_action(hdr->frame_control) &&
-                   tx->sta && test_sta_flags(tx->sta, WLAN_STA_MFP)))) {
+                   tx->sta && test_sta_flag(tx->sta, WLAN_STA_MFP)))) {
                 I802_DEBUG_INC(tx->local->tx_handlers_drop_unencrypted);
                 return TX_DROP;
         } else
@@ -611,7 +616,7 @@ ieee80211_tx_h_rate_ctrl(struct ieee80211_tx_data *tx)
         u32 len;
         bool inval = false, rts = false, short_preamble = false;
         struct ieee80211_tx_rate_control txrc;
-        u32 sta_flags;
+        bool assoc = false;
 
         memset(&txrc, 0, sizeof(txrc));
 
@@ -647,17 +652,17 @@ ieee80211_tx_h_rate_ctrl(struct ieee80211_tx_data *tx)
          */
         if (tx->sdata->vif.bss_conf.use_short_preamble &&
             (ieee80211_is_data(hdr->frame_control) ||
-             (tx->sta && test_sta_flags(tx->sta, WLAN_STA_SHORT_PREAMBLE))))
+             (tx->sta && test_sta_flag(tx->sta, WLAN_STA_SHORT_PREAMBLE))))
                 txrc.short_preamble = short_preamble = true;
 
-        sta_flags = tx->sta ? get_sta_flags(tx->sta) : 0;
+        if (tx->sta)
+                assoc = test_sta_flag(tx->sta, WLAN_STA_ASSOC);
 
         /*
          * Lets not bother rate control if we're associated and cannot
          * talk to the sta. This should not happen.
          */
-        if (WARN(test_bit(SCAN_SW_SCANNING, &tx->local->scanning) &&
-                 (sta_flags & WLAN_STA_ASSOC) &&
+        if (WARN(test_bit(SCAN_SW_SCANNING, &tx->local->scanning) && assoc &&
                  !rate_usable_index_exists(sband, &tx->sta->sta),
                  "%s: Dropped data frame as no usable bitrate found while "
                  "scanning and associated. Target station: "
@@ -800,6 +805,9 @@ ieee80211_tx_h_sequence(struct ieee80211_tx_data *tx)
         if (ieee80211_hdrlen(hdr->frame_control) < 24)
                 return TX_CONTINUE;
 
+        if (ieee80211_is_qos_nullfunc(hdr->frame_control))
+                return TX_CONTINUE;
+
         /*
          * Anything but QoS data that has a sequence number field
          * (is long enough) gets a sequence number from the global
@@ -891,7 +899,10 @@ ieee80211_tx_h_fragment(struct ieee80211_tx_data *tx)
         int hdrlen;
         int fragnum;
 
-        if (!(tx->flags & IEEE80211_TX_FRAGMENTED))
+        if (info->flags & IEEE80211_TX_CTL_DONTFRAG)
+                return TX_CONTINUE;
+
+        if (tx->local->ops->set_frag_threshold)
                 return TX_CONTINUE;
 
         /*
@@ -904,7 +915,7 @@ ieee80211_tx_h_fragment(struct ieee80211_tx_data *tx)
 
         hdrlen = ieee80211_hdrlen(hdr->frame_control);
 
-        /* internal error, why is TX_FRAGMENTED set? */
+        /* internal error, why isn't DONTFRAG set? */
         if (WARN_ON(skb->len + FCS_LEN <= frag_threshold))
                 return TX_DROP;
 
@@ -1025,100 +1036,6 @@ ieee80211_tx_h_calculate_duration(struct ieee80211_tx_data *tx)
 
 /* actual transmit path */
 
-/*
- * deal with packet injection down monitor interface
- * with Radiotap Header -- only called for monitor mode interface
- */
-static bool __ieee80211_parse_tx_radiotap(struct ieee80211_tx_data *tx,
-                                          struct sk_buff *skb)
-{
-        /*
-         * this is the moment to interpret and discard the radiotap header that
-         * must be at the start of the packet injected in Monitor mode
-         *
-         * Need to take some care with endian-ness since radiotap
-         * args are little-endian
-         */
-
-        struct ieee80211_radiotap_iterator iterator;
-        struct ieee80211_radiotap_header *rthdr =
-                (struct ieee80211_radiotap_header *) skb->data;
-        bool hw_frag;
-        struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
-        int ret = ieee80211_radiotap_iterator_init(&iterator, rthdr, skb->len,
-                                                   NULL);
-
-        info->flags |= IEEE80211_TX_INTFL_DONT_ENCRYPT;
-        tx->flags &= ~IEEE80211_TX_FRAGMENTED;
-
-        /* packet is fragmented in HW if we have a non-NULL driver callback */
-        hw_frag = (tx->local->ops->set_frag_threshold != NULL);
-
-        /*
-         * for every radiotap entry that is present
-         * (ieee80211_radiotap_iterator_next returns -ENOENT when no more
-         * entries present, or -EINVAL on error)
-         */
-
-        while (!ret) {
-                ret = ieee80211_radiotap_iterator_next(&iterator);
-
-                if (ret)
-                        continue;
-
-                /* see if this argument is something we can use */
-                switch (iterator.this_arg_index) {
-                /*
-                 * You must take care when dereferencing iterator.this_arg
-                 * for multibyte types... the pointer is not aligned.  Use
-                 * get_unaligned((type *)iterator.this_arg) to dereference
-                 * iterator.this_arg for type "type" safely on all arches.
-                */
-                case IEEE80211_RADIOTAP_FLAGS:
-                        if (*iterator.this_arg & IEEE80211_RADIOTAP_F_FCS) {
-                                /*
-                                 * this indicates that the skb we have been
-                                 * handed has the 32-bit FCS CRC at the end...
-                                 * we should react to that by snipping it off
-                                 * because it will be recomputed and added
-                                 * on transmission
-                                 */
-                                if (skb->len < (iterator._max_length + FCS_LEN))
-                                        return false;
-
-                                skb_trim(skb, skb->len - FCS_LEN);
-                        }
-                        if (*iterator.this_arg & IEEE80211_RADIOTAP_F_WEP)
-                                info->flags &= ~IEEE80211_TX_INTFL_DONT_ENCRYPT;
-                        if ((*iterator.this_arg & IEEE80211_RADIOTAP_F_FRAG) &&
-                                                                !hw_frag)
-                                tx->flags |= IEEE80211_TX_FRAGMENTED;
-                        break;
-
-                /*
-                 * Please update the file
-                 * Documentation/networking/mac80211-injection.txt
-                 * when parsing new fields here.
-                 */
-
-                default:
-                        break;
-                }
-        }
-
-        if (ret != -ENOENT) /* ie, if we didn't simply run out of fields */
-                return false;
-
-        /*
-         * remove the radiotap header
-         * iterator->_max_length was sanity-checked against
-         * skb->len by iterator init
-         */
-        skb_pull(skb, iterator._max_length);
-
-        return true;
-}
-
 static bool ieee80211_tx_prep_agg(struct ieee80211_tx_data *tx,
                                   struct sk_buff *skb,
                                   struct ieee80211_tx_info *info,
@@ -1183,7 +1100,7 @@ ieee80211_tx_prepare(struct ieee80211_sub_if_data *sdata,
         struct ieee80211_local *local = sdata->local;
         struct ieee80211_hdr *hdr;
         struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
-        int hdrlen, tid;
+        int tid;
         u8 *qc;
 
         memset(tx, 0, sizeof(*tx));
@@ -1191,26 +1108,6 @@ ieee80211_tx_prepare(struct ieee80211_sub_if_data *sdata,
         tx->local = local;
         tx->sdata = sdata;
         tx->channel = local->hw.conf.channel;
-        /*
-         * Set this flag (used below to indicate "automatic fragmentation"),
-         * it will be cleared/left by radiotap as desired.
-         * Only valid when fragmentation is done by the stack.
-         */
-        if (!local->ops->set_frag_threshold)
-                tx->flags |= IEEE80211_TX_FRAGMENTED;
-
-        /* process and remove the injection radiotap header */
-        if (unlikely(info->flags & IEEE80211_TX_INTFL_HAS_RADIOTAP)) {
-                if (!__ieee80211_parse_tx_radiotap(tx, skb))
-                        return TX_DROP;
-
-                /*
-                 * __ieee80211_parse_tx_radiotap has now removed
-                 * the radiotap header that was present and pre-filled
-                 * 'tx' with tx control information.
-                 */
-                info->flags &= ~IEEE80211_TX_INTFL_HAS_RADIOTAP;
-        }
 
         /*
          * If this flag is set to true anywhere, and we get here,
@@ -1232,7 +1129,9 @@ ieee80211_tx_prepare(struct ieee80211_sub_if_data *sdata,
                 tx->sta = sta_info_get(sdata, hdr->addr1);
 
         if (tx->sta && ieee80211_is_data_qos(hdr->frame_control) &&
-            (local->hw.flags & IEEE80211_HW_AMPDU_AGGREGATION)) {
+            !ieee80211_is_qos_nullfunc(hdr->frame_control) &&
+            (local->hw.flags & IEEE80211_HW_AMPDU_AGGREGATION) &&
+            !(local->hw.flags & IEEE80211_HW_TX_AMPDU_SETUP_IN_HW)) {
                 struct tid_ampdu_tx *tid_tx;
 
                 qc = ieee80211_get_qos_ctl(hdr);
@@ -1257,29 +1156,25 @@ ieee80211_tx_prepare(struct ieee80211_sub_if_data *sdata,
                 tx->flags |= IEEE80211_TX_UNICAST;
                 if (unlikely(local->wifi_wme_noack_test))
                         info->flags |= IEEE80211_TX_CTL_NO_ACK;
-                else
-                        info->flags &= ~IEEE80211_TX_CTL_NO_ACK;
+                /*
+                 * Flags are initialized to 0. Hence, no need to
+                 * explicitly unset IEEE80211_TX_CTL_NO_ACK since
+                 * it might already be set for injected frames.
+                 */
         }
 
-        if (tx->flags & IEEE80211_TX_FRAGMENTED) {
-                if ((tx->flags & IEEE80211_TX_UNICAST) &&
-                    skb->len + FCS_LEN > local->hw.wiphy->frag_threshold &&
-                    !(info->flags & IEEE80211_TX_CTL_AMPDU))
-                        tx->flags |= IEEE80211_TX_FRAGMENTED;
-                else
-                        tx->flags &= ~IEEE80211_TX_FRAGMENTED;
+        if (!(info->flags & IEEE80211_TX_CTL_DONTFRAG)) {
+                if (!(tx->flags & IEEE80211_TX_UNICAST) ||
+                    skb->len + FCS_LEN <= local->hw.wiphy->frag_threshold ||
+                    info->flags & IEEE80211_TX_CTL_AMPDU)
+                        info->flags |= IEEE80211_TX_CTL_DONTFRAG;
         }
 
         if (!tx->sta)
                 info->flags |= IEEE80211_TX_CTL_CLEAR_PS_FILT;
-        else if (test_and_clear_sta_flags(tx->sta, WLAN_STA_CLEAR_PS_FILT))
+        else if (test_and_clear_sta_flag(tx->sta, WLAN_STA_CLEAR_PS_FILT))
                 info->flags |= IEEE80211_TX_CTL_CLEAR_PS_FILT;
 
-        hdrlen = ieee80211_hdrlen(hdr->frame_control);
-        if (skb->len > hdrlen + sizeof(rfc1042_header) + 2) {
-                u8 *pos = &skb->data[hdrlen + sizeof(rfc1042_header)];
-                tx->ethertype = (pos[0] << 8) | pos[1];
-        }
         info->flags |= IEEE80211_TX_CTL_FIRST_FRAGMENT;
 
         return TX_CONTINUE;
@@ -1490,11 +1385,6 @@ static int ieee80211_skb_resize(struct ieee80211_sub_if_data *sdata,
                 tail_need = max_t(int, tail_need, 0);
         }
 
-        if (head_need || tail_need) {
-                /* Sorry. Can't account for this any more */
-                skb_orphan(skb);
-        }
-
         if (skb_cloned(skb))
                 I802_DEBUG_INC(local->tx_expand_skb_head_cloned);
         else if (head_need || tail_need)
@@ -1508,67 +1398,19 @@ static int ieee80211_skb_resize(struct ieee80211_sub_if_data *sdata,
                 return -ENOMEM;
         }
 
-        /* update truesize too */
-        skb->truesize += head_need + tail_need;
-
         return 0;
 }
 
-static void ieee80211_xmit(struct ieee80211_sub_if_data *sdata,
-                           struct sk_buff *skb)
+void ieee80211_xmit(struct ieee80211_sub_if_data *sdata, struct sk_buff *skb)
 {
         struct ieee80211_local *local = sdata->local;
         struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
         struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
-        struct ieee80211_sub_if_data *tmp_sdata;
         int headroom;
         bool may_encrypt;
 
         rcu_read_lock();
 
-        if (unlikely(sdata->vif.type == NL80211_IFTYPE_MONITOR)) {
-                int hdrlen;
-                u16 len_rthdr;
-
-                info->flags |= IEEE80211_TX_CTL_INJECTED |
-                               IEEE80211_TX_INTFL_HAS_RADIOTAP;
-
-                len_rthdr = ieee80211_get_radiotap_len(skb->data);
-                hdr = (struct ieee80211_hdr *)(skb->data + len_rthdr);
-                hdrlen = ieee80211_hdrlen(hdr->frame_control);
-
-                /* check the header is complete in the frame */
-                if (likely(skb->len >= len_rthdr + hdrlen)) {
-                        /*
-                         * We process outgoing injected frames that have a
-                         * local address we handle as though they are our
-                         * own frames.
-                         * This code here isn't entirely correct, the local
-                         * MAC address is not necessarily enough to find
-                         * the interface to use; for that proper VLAN/WDS
-                         * support we will need a different mechanism.
-                         */
-
-                        list_for_each_entry_rcu(tmp_sdata, &local->interfaces,
-                                                list) {
-                                if (!ieee80211_sdata_running(tmp_sdata))
-                                        continue;
-                                if (tmp_sdata->vif.type ==
-                                    NL80211_IFTYPE_MONITOR ||
-                                    tmp_sdata->vif.type ==
-                                    NL80211_IFTYPE_AP_VLAN ||
-                                        tmp_sdata->vif.type ==
-                                    NL80211_IFTYPE_WDS)
-                                        continue;
-                                if (compare_ether_addr(tmp_sdata->vif.addr,
-                                                       hdr->addr2) == 0) {
-                                        sdata = tmp_sdata;
-                                        break;
-                                }
-                        }
-                }
-        }
-
         may_encrypt = !(info->flags & IEEE80211_TX_INTFL_DONT_ENCRYPT);
 
         headroom = local->tx_headroom;
@@ -1595,11 +1437,94 @@ static void ieee80211_xmit(struct ieee80211_sub_if_data *sdata,
                                 return;
                         }
 
-        ieee80211_set_qos_hdr(local, skb);
+        ieee80211_set_qos_hdr(sdata, skb);
         ieee80211_tx(sdata, skb, false);
         rcu_read_unlock();
 }
 
+static bool ieee80211_parse_tx_radiotap(struct sk_buff *skb)
+{
+        struct ieee80211_radiotap_iterator iterator;
+        struct ieee80211_radiotap_header *rthdr =
+                (struct ieee80211_radiotap_header *) skb->data;
+        struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
+        int ret = ieee80211_radiotap_iterator_init(&iterator, rthdr, skb->len,
+                                                   NULL);
+        u16 txflags;
+
+        info->flags |= IEEE80211_TX_INTFL_DONT_ENCRYPT |
+                       IEEE80211_TX_CTL_DONTFRAG;
+
+        /*
+         * for every radiotap entry that is present
+         * (ieee80211_radiotap_iterator_next returns -ENOENT when no more
+         * entries present, or -EINVAL on error)
+         */
+
+        while (!ret) {
+                ret = ieee80211_radiotap_iterator_next(&iterator);
+
+                if (ret)
+                        continue;
+
+                /* see if this argument is something we can use */
+                switch (iterator.this_arg_index) {
+                /*
+                 * You must take care when dereferencing iterator.this_arg
+                 * for multibyte types... the pointer is not aligned.  Use
+                 * get_unaligned((type *)iterator.this_arg) to dereference
+                 * iterator.this_arg for type "type" safely on all arches.
+                */
+                case IEEE80211_RADIOTAP_FLAGS:
+                        if (*iterator.this_arg & IEEE80211_RADIOTAP_F_FCS) {
+                                /*
+                                 * this indicates that the skb we have been
+                                 * handed has the 32-bit FCS CRC at the end...
+                                 * we should react to that by snipping it off
+                                 * because it will be recomputed and added
+                                 * on transmission
+                                 */
+                                if (skb->len < (iterator._max_length + FCS_LEN))
+                                        return false;
+
+                                skb_trim(skb, skb->len - FCS_LEN);
+                        }
+                        if (*iterator.this_arg & IEEE80211_RADIOTAP_F_WEP)
+                                info->flags &= ~IEEE80211_TX_INTFL_DONT_ENCRYPT;
+                        if (*iterator.this_arg & IEEE80211_RADIOTAP_F_FRAG)
+                                info->flags &= ~IEEE80211_TX_CTL_DONTFRAG;
+                        break;
+
+                case IEEE80211_RADIOTAP_TX_FLAGS:
+                        txflags = get_unaligned_le16(iterator.this_arg);
+                        if (txflags & IEEE80211_RADIOTAP_F_TX_NOACK)
+                                info->flags |= IEEE80211_TX_CTL_NO_ACK;
+                        break;
+
+                /*
+                 * Please update the file
+                 * Documentation/networking/mac80211-injection.txt
+                 * when parsing new fields here.
+                 */
+
+                default:
+                        break;
+                }
+        }
+
+        if (ret != -ENOENT) /* ie, if we didn't simply run out of fields */
+                return false;
+
+        /*
+         * remove the radiotap header
+         * iterator->_max_length was sanity-checked against
+         * skb->len by iterator init
+         */
+        skb_pull(skb, iterator._max_length);
+
+        return true;
+}
+
 netdev_tx_t ieee80211_monitor_start_xmit(struct sk_buff *skb,
                                          struct net_device *dev)
 {
@@ -1608,7 +1533,10 @@ netdev_tx_t ieee80211_monitor_start_xmit(struct sk_buff *skb,
         struct ieee80211_radiotap_header *prthdr =
                 (struct ieee80211_radiotap_header *)skb->data;
         struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
+        struct ieee80211_hdr *hdr;
+        struct ieee80211_sub_if_data *tmp_sdata, *sdata;
         u16 len_rthdr;
+        int hdrlen;
 
         /*
          * Frame injection is not allowed if beaconing is not allowed
@@ -1659,12 +1587,65 @@ netdev_tx_t ieee80211_monitor_start_xmit(struct sk_buff *skb,
         skb_set_network_header(skb, len_rthdr);
         skb_set_transport_header(skb, len_rthdr);
 
+        if (skb->len < len_rthdr + 2)
+                goto fail;
+
+        hdr = (struct ieee80211_hdr *)(skb->data + len_rthdr);
+        hdrlen = ieee80211_hdrlen(hdr->frame_control);
+
+        if (skb->len < len_rthdr + hdrlen)
+                goto fail;
+
+        /*
+         * Initialize skb->protocol if the injected frame is a data frame
+         * carrying a rfc1042 header
+         */
+        if (ieee80211_is_data(hdr->frame_control) &&
+            skb->len >= len_rthdr + hdrlen + sizeof(rfc1042_header) + 2) {
+                u8 *payload = (u8 *)hdr + hdrlen;
+
+                if (compare_ether_addr(payload, rfc1042_header) == 0)
+                        skb->protocol = cpu_to_be16((payload[6] << 8) |
+                                                    payload[7]);
+        }
+
         memset(info, 0, sizeof(*info));
 
-        info->flags |= IEEE80211_TX_CTL_REQ_TX_STATUS;
+        info->flags = IEEE80211_TX_CTL_REQ_TX_STATUS |
+                      IEEE80211_TX_CTL_INJECTED;
+
+        /* process and remove the injection radiotap header */
+        if (!ieee80211_parse_tx_radiotap(skb))
+                goto fail;
+
+        rcu_read_lock();
+
+        /*
+         * We process outgoing injected frames that have a local address
+         * we handle as though they are non-injected frames.
+         * This code here isn't entirely correct, the local MAC address
+         * isn't always enough to find the interface to use; for proper
+         * VLAN/WDS support we will need a different mechanism (which
+         * likely isn't going to be monitor interfaces).
+         */
+        sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+
+        list_for_each_entry_rcu(tmp_sdata, &local->interfaces, list) {
+                if (!ieee80211_sdata_running(tmp_sdata))
+                        continue;
+                if (tmp_sdata->vif.type == NL80211_IFTYPE_MONITOR ||
+                    tmp_sdata->vif.type == NL80211_IFTYPE_AP_VLAN ||
+                    tmp_sdata->vif.type == NL80211_IFTYPE_WDS)
+                        continue;
+                if (compare_ether_addr(tmp_sdata->vif.addr, hdr->addr2) == 0) {
+                        sdata = tmp_sdata;
+                        break;
+                }
+        }
+
+        ieee80211_xmit(sdata, skb);
+        rcu_read_unlock();
 
-        /* pass the radiotap header up to xmit */
-        ieee80211_xmit(IEEE80211_DEV_TO_SUB_IF(dev), skb);
         return NETDEV_TX_OK;
 
 fail:
@@ -1703,8 +1684,9 @@ netdev_tx_t ieee80211_subif_start_xmit(struct sk_buff *skb,
         int encaps_len, skip_header_bytes;
         int nh_pos, h_pos;
         struct sta_info *sta = NULL;
-        u32 sta_flags = 0;
+        bool wme_sta = false, authorized = false, tdls_auth = false;
         struct sk_buff *tmp_skb;
+        bool tdls_direct = false;
 
         if (unlikely(skb->len < ETH_HLEN)) {
                 ret = NETDEV_TX_OK;
@@ -1728,7 +1710,8 @@ netdev_tx_t ieee80211_subif_start_xmit(struct sk_buff *skb,
                         memcpy(hdr.addr3, skb->data, ETH_ALEN);
                         memcpy(hdr.addr4, skb->data + ETH_ALEN, ETH_ALEN);
                         hdrlen = 30;
-                        sta_flags = get_sta_flags(sta);
+                        authorized = test_sta_flag(sta, WLAN_STA_AUTHORIZED);
+                        wme_sta = test_sta_flag(sta, WLAN_STA_WME);
                 }
                 rcu_read_unlock();
                 if (sta)
@@ -1816,11 +1799,50 @@ netdev_tx_t ieee80211_subif_start_xmit(struct sk_buff *skb,
                 break;
 #endif
         case NL80211_IFTYPE_STATION:
-                memcpy(hdr.addr1, sdata->u.mgd.bssid, ETH_ALEN);
-                if (sdata->u.mgd.use_4addr &&
-                    cpu_to_be16(ethertype) != sdata->control_port_protocol) {
-                        fc |= cpu_to_le16(IEEE80211_FCTL_FROMDS | IEEE80211_FCTL_TODS);
+                if (sdata->wdev.wiphy->flags & WIPHY_FLAG_SUPPORTS_TDLS) {
+                        bool tdls_peer = false;
+
+                        rcu_read_lock();
+                        sta = sta_info_get(sdata, skb->data);
+                        if (sta) {
+                                authorized = test_sta_flag(sta,
+                                                        WLAN_STA_AUTHORIZED);
+                                wme_sta = test_sta_flag(sta, WLAN_STA_WME);
+                                tdls_peer = test_sta_flag(sta,
+                                                         WLAN_STA_TDLS_PEER);
+                                tdls_auth = test_sta_flag(sta,
+                                                WLAN_STA_TDLS_PEER_AUTH);
+                        }
+                        rcu_read_unlock();
+
+                        /*
+                         * If the TDLS link is enabled, send everything
+                         * directly. Otherwise, allow TDLS setup frames
+                         * to be transmitted indirectly.
+                         */
+                        tdls_direct = tdls_peer && (tdls_auth ||
+                                 !(ethertype == ETH_P_TDLS && skb->len > 14 &&
+                                   skb->data[14] == WLAN_TDLS_SNAP_RFTYPE));
+                }
+
+                if (tdls_direct) {
+                        /* link during setup - throw out frames to peer */
+                        if (!tdls_auth) {
+                                ret = NETDEV_TX_OK;
+                                goto fail;
+                        }
+
+                        /* DA SA BSSID */
+                        memcpy(hdr.addr1, skb->data, ETH_ALEN);
+                        memcpy(hdr.addr2, skb->data + ETH_ALEN, ETH_ALEN);
+                        memcpy(hdr.addr3, sdata->u.mgd.bssid, ETH_ALEN);
+                        hdrlen = 24;
+                }  else if (sdata->u.mgd.use_4addr &&
+                            cpu_to_be16(ethertype) != sdata->control_port_protocol) {
+                        fc |= cpu_to_le16(IEEE80211_FCTL_FROMDS |
+                                          IEEE80211_FCTL_TODS);
                         /* RA TA DA SA */
+                        memcpy(hdr.addr1, sdata->u.mgd.bssid, ETH_ALEN);
                         memcpy(hdr.addr2, sdata->vif.addr, ETH_ALEN);
                         memcpy(hdr.addr3, skb->data, ETH_ALEN);
                         memcpy(hdr.addr4, skb->data + ETH_ALEN, ETH_ALEN);
@@ -1828,6 +1850,7 @@ netdev_tx_t ieee80211_subif_start_xmit(struct sk_buff *skb,
                 } else {
                         fc |= cpu_to_le16(IEEE80211_FCTL_TODS);
                         /* BSSID SA DA */
+                        memcpy(hdr.addr1, sdata->u.mgd.bssid, ETH_ALEN);
                         memcpy(hdr.addr2, skb->data + ETH_ALEN, ETH_ALEN);
                         memcpy(hdr.addr3, skb->data, ETH_ALEN);
                         hdrlen = 24;
@@ -1853,13 +1876,19 @@ netdev_tx_t ieee80211_subif_start_xmit(struct sk_buff *skb,
         if (!is_multicast_ether_addr(hdr.addr1)) {
                 rcu_read_lock();
                 sta = sta_info_get(sdata, hdr.addr1);
-                if (sta)
-                        sta_flags = get_sta_flags(sta);
+                if (sta) {
+                        authorized = test_sta_flag(sta, WLAN_STA_AUTHORIZED);
+                        wme_sta = test_sta_flag(sta, WLAN_STA_WME);
+                }
                 rcu_read_unlock();
         }
 
+        /* For mesh, the use of the QoS header is mandatory */
+        if (ieee80211_vif_is_mesh(&sdata->vif))
+                wme_sta = true;
+
         /* receiver and we are QoS enabled, use a QoS type frame */
-        if ((sta_flags & WLAN_STA_WME) && local->hw.queues >= 4) {
+        if (wme_sta && local->hw.queues >= 4) {
                 fc |= cpu_to_le16(IEEE80211_STYPE_QOS_DATA);
                 hdrlen += 2;
         }
@@ -1868,12 +1897,10 @@ netdev_tx_t ieee80211_subif_start_xmit(struct sk_buff *skb,
          * Drop unicast frames to unauthorised stations unless they are
          * EAPOL frames from the local station.
          */
-        if (!ieee80211_vif_is_mesh(&sdata->vif) &&
-                unlikely(!is_multicast_ether_addr(hdr.addr1) &&
-                      !(sta_flags & WLAN_STA_AUTHORIZED) &&
-                      !(cpu_to_be16(ethertype) == sdata->control_port_protocol &&
-                       compare_ether_addr(sdata->vif.addr,
-                                          skb->data + ETH_ALEN) == 0))) {
+        if (unlikely(!ieee80211_vif_is_mesh(&sdata->vif) &&
+                     !is_multicast_ether_addr(hdr.addr1) && !authorized &&
+                     (cpu_to_be16(ethertype) != sdata->control_port_protocol ||
+                      compare_ether_addr(sdata->vif.addr, skb->data + ETH_ALEN)))) {
 #ifdef CONFIG_MAC80211_VERBOSE_DEBUG
                 if (net_ratelimit())
                         printk(KERN_DEBUG "%s: dropped frame to %pM"
@@ -2275,13 +2302,23 @@ struct sk_buff *ieee80211_beacon_get_tim(struct ieee80211_hw *hw,
                 memcpy(mgmt->bssid, sdata->vif.addr, ETH_ALEN);
                 mgmt->u.beacon.beacon_int =
                         cpu_to_le16(sdata->vif.bss_conf.beacon_int);
-                mgmt->u.beacon.capab_info = 0x0; /* 0x0 for MPs */
+                mgmt->u.beacon.capab_info |= cpu_to_le16(
+                        sdata->u.mesh.security ? WLAN_CAPABILITY_PRIVACY : 0);
 
                 pos = skb_put(skb, 2);
                 *pos++ = WLAN_EID_SSID;
                 *pos++ = 0x0;
 
-                mesh_mgmt_ies_add(skb, sdata);
+                if (ieee80211_add_srates_ie(&sdata->vif, skb) ||
+                    mesh_add_ds_params_ie(skb, sdata) ||
+                    ieee80211_add_ext_srates_ie(&sdata->vif, skb) ||
+                    mesh_add_rsn_ie(skb, sdata) ||
+                    mesh_add_meshid_ie(skb, sdata) ||
+                    mesh_add_meshconf_ie(skb, sdata) ||
+                    mesh_add_vendor_ies(skb, sdata)) {
+                        pr_err("o11s: couldn't add ies!\n");
+                        goto out;
+                }
         } else {
                 WARN_ON(1);
                 goto out;
@@ -2335,11 +2372,9 @@ struct sk_buff *ieee80211_pspoll_get(struct ieee80211_hw *hw,
         local = sdata->local;
 
         skb = dev_alloc_skb(local->hw.extra_tx_headroom + sizeof(*pspoll));
-        if (!skb) {
-                printk(KERN_DEBUG "%s: failed to allocate buffer for "
-                       "pspoll template\n", sdata->name);
+        if (!skb)
                 return NULL;
-        }
+
         skb_reserve(skb, local->hw.extra_tx_headroom);
 
         pspoll = (struct ieee80211_pspoll *) skb_put(skb, sizeof(*pspoll));
@@ -2375,11 +2410,9 @@ struct sk_buff *ieee80211_nullfunc_get(struct ieee80211_hw *hw,
         local = sdata->local;
 
         skb = dev_alloc_skb(local->hw.extra_tx_headroom + sizeof(*nullfunc));
-        if (!skb) {
-                printk(KERN_DEBUG "%s: failed to allocate buffer for nullfunc "
-                       "template\n", sdata->name);
+        if (!skb)
                 return NULL;
-        }
+
         skb_reserve(skb, local->hw.extra_tx_headroom);
 
         nullfunc = (struct ieee80211_hdr_3addr *) skb_put(skb,
@@ -2414,11 +2447,8 @@ struct sk_buff *ieee80211_probereq_get(struct ieee80211_hw *hw,
 
         skb = dev_alloc_skb(local->hw.extra_tx_headroom + sizeof(*hdr) +
                             ie_ssid_len + ie_len);
-        if (!skb) {
-                printk(KERN_DEBUG "%s: failed to allocate buffer for probe "
-                       "request template\n", sdata->name);
+        if (!skb)
                 return NULL;
-        }
 
         skb_reserve(skb, local->hw.extra_tx_headroom);
 
diff --git a/net/mac80211/util.c b/net/mac80211/util.c
index ddeb1b998383..51e256c5fb78 100644
--- a/net/mac80211/util.c
+++ b/net/mac80211/util.c
@@ -13,13 +13,13 @@
 
 #include <net/mac80211.h>
 #include <linux/netdevice.h>
+#include <linux/export.h>
 #include <linux/types.h>
 #include <linux/slab.h>
 #include <linux/skbuff.h>
 #include <linux/etherdevice.h>
 #include <linux/if_arp.h>
 #include <linux/bitmap.h>
-#include <linux/crc32.h>
 #include <net/net_namespace.h>
 #include <net/cfg80211.h>
 #include <net/rtnetlink.h>
@@ -368,14 +368,14 @@ void ieee80211_add_pending_skb(struct ieee80211_local *local,
         spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags);
 }
 
-int ieee80211_add_pending_skbs_fn(struct ieee80211_local *local,
-                                  struct sk_buff_head *skbs,
-                                  void (*fn)(void *data), void *data)
+void ieee80211_add_pending_skbs_fn(struct ieee80211_local *local,
+                                   struct sk_buff_head *skbs,
+                                   void (*fn)(void *data), void *data)
 {
         struct ieee80211_hw *hw = &local->hw;
         struct sk_buff *skb;
         unsigned long flags;
-        int queue, ret = 0, i;
+        int queue, i;
 
         spin_lock_irqsave(&local->queue_stop_reason_lock, flags);
         for (i = 0; i < hw->queues; i++)
@@ -390,7 +390,6 @@ int ieee80211_add_pending_skbs_fn(struct ieee80211_local *local,
                         continue;
                 }
 
-                ret++;
                 queue = skb_get_queue_mapping(skb);
                 __skb_queue_tail(&local->pending[queue], skb);
         }
@@ -402,14 +401,12 @@ int ieee80211_add_pending_skbs_fn(struct ieee80211_local *local,
                 __ieee80211_wake_queue(hw, i,
                         IEEE80211_QUEUE_STOP_REASON_SKB_ADD);
         spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags);
-
-        return ret;
 }
 
-int ieee80211_add_pending_skbs(struct ieee80211_local *local,
-                               struct sk_buff_head *skbs)
+void ieee80211_add_pending_skbs(struct ieee80211_local *local,
+                                struct sk_buff_head *skbs)
 {
-        return ieee80211_add_pending_skbs_fn(local, skbs, NULL, NULL);
+        ieee80211_add_pending_skbs_fn(local, skbs, NULL, NULL);
 }
 
 void ieee80211_stop_queues_by_reason(struct ieee80211_hw *hw,
@@ -573,172 +570,6 @@ void ieee802_11_parse_elems(u8 *start, size_t len,
         ieee802_11_parse_elems_crc(start, len, elems, 0, 0);
 }
 
-u32 ieee802_11_parse_elems_crc(u8 *start, size_t len,
-                               struct ieee802_11_elems *elems,
-                               u64 filter, u32 crc)
-{
-        size_t left = len;
-        u8 *pos = start;
-        bool calc_crc = filter != 0;
-
-        memset(elems, 0, sizeof(*elems));
-        elems->ie_start = start;
-        elems->total_len = len;
-
-        while (left >= 2) {
-                u8 id, elen;
-
-                id = *pos++;
-                elen = *pos++;
-                left -= 2;
-
-                if (elen > left)
-                        break;
-
-                if (calc_crc && id < 64 && (filter & (1ULL << id)))
-                        crc = crc32_be(crc, pos - 2, elen + 2);
-
-                switch (id) {
-                case WLAN_EID_SSID:
-                        elems->ssid = pos;
-                        elems->ssid_len = elen;
-                        break;
-                case WLAN_EID_SUPP_RATES:
-                        elems->supp_rates = pos;
-                        elems->supp_rates_len = elen;
-                        break;
-                case WLAN_EID_FH_PARAMS:
-                        elems->fh_params = pos;
-                        elems->fh_params_len = elen;
-                        break;
-                case WLAN_EID_DS_PARAMS:
-                        elems->ds_params = pos;
-                        elems->ds_params_len = elen;
-                        break;
-                case WLAN_EID_CF_PARAMS:
-                        elems->cf_params = pos;
-                        elems->cf_params_len = elen;
-                        break;
-                case WLAN_EID_TIM:
-                        if (elen >= sizeof(struct ieee80211_tim_ie)) {
-                                elems->tim = (void *)pos;
-                                elems->tim_len = elen;
-                        }
-                        break;
-                case WLAN_EID_IBSS_PARAMS:
-                        elems->ibss_params = pos;
-                        elems->ibss_params_len = elen;
-                        break;
-                case WLAN_EID_CHALLENGE:
-                        elems->challenge = pos;
-                        elems->challenge_len = elen;
-                        break;
-                case WLAN_EID_VENDOR_SPECIFIC:
-                        if (elen >= 4 && pos[0] == 0x00 && pos[1] == 0x50 &&
-                            pos[2] == 0xf2) {
-                                /* Microsoft OUI (00:50:F2) */
-
-                                if (calc_crc)
-                                        crc = crc32_be(crc, pos - 2, elen + 2);
-
-                                if (pos[3] == 1) {
-                                        /* OUI Type 1 - WPA IE */
-                                        elems->wpa = pos;
-                                        elems->wpa_len = elen;
-                                } else if (elen >= 5 && pos[3] == 2) {
-                                        /* OUI Type 2 - WMM IE */
-                                        if (pos[4] == 0) {
-                                                elems->wmm_info = pos;
-                                                elems->wmm_info_len = elen;
-                                        } else if (pos[4] == 1) {
-                                                elems->wmm_param = pos;
-                                                elems->wmm_param_len = elen;
-                                        }
-                                }
-                        }
-                        break;
-                case WLAN_EID_RSN:
-                        elems->rsn = pos;
-                        elems->rsn_len = elen;
-                        break;
-                case WLAN_EID_ERP_INFO:
-                        elems->erp_info = pos;
-                        elems->erp_info_len = elen;
-                        break;
-                case WLAN_EID_EXT_SUPP_RATES:
-                        elems->ext_supp_rates = pos;
-                        elems->ext_supp_rates_len = elen;
-                        break;
-                case WLAN_EID_HT_CAPABILITY:
-                        if (elen >= sizeof(struct ieee80211_ht_cap))
-                                elems->ht_cap_elem = (void *)pos;
-                        break;
-                case WLAN_EID_HT_INFORMATION:
-                        if (elen >= sizeof(struct ieee80211_ht_info))
-                                elems->ht_info_elem = (void *)pos;
-                        break;
-                case WLAN_EID_MESH_ID:
-                        elems->mesh_id = pos;
-                        elems->mesh_id_len = elen;
-                        break;
-                case WLAN_EID_MESH_CONFIG:
-                        if (elen >= sizeof(struct ieee80211_meshconf_ie))
-                                elems->mesh_config = (void *)pos;
-                        break;
-                case WLAN_EID_PEER_LINK:
-                        elems->peer_link = pos;
-                        elems->peer_link_len = elen;
-                        break;
-                case WLAN_EID_PREQ:
-                        elems->preq = pos;
-                        elems->preq_len = elen;
-                        break;
-                case WLAN_EID_PREP:
-                        elems->prep = pos;
-                        elems->prep_len = elen;
-                        break;
-                case WLAN_EID_PERR:
-                        elems->perr = pos;
-                        elems->perr_len = elen;
-                        break;
-                case WLAN_EID_RANN:
-                        if (elen >= sizeof(struct ieee80211_rann_ie))
-                                elems->rann = (void *)pos;
-                        break;
-                case WLAN_EID_CHANNEL_SWITCH:
-                        elems->ch_switch_elem = pos;
-                        elems->ch_switch_elem_len = elen;
-                        break;
-                case WLAN_EID_QUIET:
-                        if (!elems->quiet_elem) {
-                                elems->quiet_elem = pos;
-                                elems->quiet_elem_len = elen;
-                        }
-                        elems->num_of_quiet_elem++;
-                        break;
-                case WLAN_EID_COUNTRY:
-                        elems->country_elem = pos;
-                        elems->country_elem_len = elen;
-                        break;
-                case WLAN_EID_PWR_CONSTRAINT:
-                        elems->pwr_constr_elem = pos;
-                        elems->pwr_constr_elem_len = elen;
-                        break;
-                case WLAN_EID_TIMEOUT_INTERVAL:
-                        elems->timeout_int = pos;
-                        elems->timeout_int_len = elen;
-                        break;
-                default:
-                        break;
-                }
-
-                left -= elen;
-                pos += elen;
-        }
-
-        return crc;
-}
-
 void ieee80211_set_wmm_default(struct ieee80211_sub_if_data *sdata)
 {
         struct ieee80211_local *local = sdata->local;
@@ -799,8 +630,8 @@ void ieee80211_set_wmm_default(struct ieee80211_sub_if_data *sdata)
 
                 qparam.uapsd = false;
 
-                local->tx_conf[queue] = qparam;
-                drv_conf_tx(local, queue, &qparam);
+                sdata->tx_conf[queue] = qparam;
+                drv_conf_tx(local, sdata, queue, &qparam);
         }
 
         /* after reinitialize QoS TX queues setting to default,
@@ -874,11 +705,9 @@ void ieee80211_send_auth(struct ieee80211_sub_if_data *sdata,
 
         skb = dev_alloc_skb(local->hw.extra_tx_headroom +
                             sizeof(*mgmt) + 6 + extra_len);
-        if (!skb) {
-                printk(KERN_DEBUG "%s: failed to allocate buffer for auth "
-                       "frame\n", sdata->name);
+        if (!skb)
                 return;
-        }
+
         skb_reserve(skb, local->hw.extra_tx_headroom);
 
         mgmt = (struct ieee80211_mgmt *) skb_put(skb, 24 + 6);
@@ -1031,11 +860,8 @@ struct sk_buff *ieee80211_build_probe_req(struct ieee80211_sub_if_data *sdata,
 
         /* FIXME: come up with a proper value */
         buf = kmalloc(200 + ie_len, GFP_KERNEL);
-        if (!buf) {
-                printk(KERN_DEBUG "%s: failed to allocate temporary IE "
-                       "buffer\n", sdata->name);
+        if (!buf)
                 return NULL;
-        }
 
         /*
          * Do not send DS Channel parameter for directed probe requests
@@ -1071,14 +897,18 @@ struct sk_buff *ieee80211_build_probe_req(struct ieee80211_sub_if_data *sdata,
 void ieee80211_send_probe_req(struct ieee80211_sub_if_data *sdata, u8 *dst,
                               const u8 *ssid, size_t ssid_len,
                               const u8 *ie, size_t ie_len,
-                              u32 ratemask, bool directed)
+                              u32 ratemask, bool directed, bool no_cck)
 {
         struct sk_buff *skb;
 
         skb = ieee80211_build_probe_req(sdata, dst, ratemask, ssid, ssid_len,
                                         ie, ie_len, directed);
-        if (skb)
+        if (skb) {
+                if (no_cck)
+                        IEEE80211_SKB_CB(skb)->flags |=
+                                IEEE80211_TX_CTL_NO_CCK_RATE;
                 ieee80211_tx_skb(sdata, skb);
+        }
 }
 
 u32 ieee80211_sta_get_rates(struct ieee80211_local *local,
@@ -1205,14 +1035,22 @@ int ieee80211_reconfig(struct ieee80211_local *local)
                                              struct ieee80211_sub_if_data,
                                              u.ap);
 
+                        memset(&sta->sta.drv_priv, 0, hw->sta_data_size);
                         WARN_ON(drv_sta_add(local, sdata, &sta->sta));
                 }
         }
         mutex_unlock(&local->sta_mtx);
 
         /* reconfigure tx conf */
-        for (i = 0; i < hw->queues; i++)
-                drv_conf_tx(local, i, &local->tx_conf[i]);
+        list_for_each_entry(sdata, &local->interfaces, list) {
+                if (sdata->vif.type == NL80211_IFTYPE_AP_VLAN ||
+                    sdata->vif.type == NL80211_IFTYPE_MONITOR ||
+                    !ieee80211_sdata_running(sdata))
+                        continue;
+
+                for (i = 0; i < hw->queues; i++)
+                        drv_conf_tx(local, sdata, i, &sdata->tx_conf[i]);
+        }
 
         /* reconfigure hardware */
         ieee80211_hw_config(local, ~0);
@@ -1248,6 +1086,8 @@ int ieee80211_reconfig(struct ieee80211_local *local)
                         changed |= BSS_CHANGED_IBSS;
                         /* fall through */
                 case NL80211_IFTYPE_AP:
+                        changed |= BSS_CHANGED_SSID;
+                        /* fall through */
                 case NL80211_IFTYPE_MESH_POINT:
                         changed |= BSS_CHANGED_BEACON |
                                    BSS_CHANGED_BEACON_ENABLED;
@@ -1283,7 +1123,7 @@ int ieee80211_reconfig(struct ieee80211_local *local)
 
                 list_for_each_entry(sta, &local->sta_list, list) {
                         ieee80211_sta_tear_down_BA_sessions(sta, true);
-                        clear_sta_flags(sta, WLAN_STA_BLOCK_BA);
+                        clear_sta_flag(sta, WLAN_STA_BLOCK_BA);
                 }
 
                 mutex_unlock(&local->sta_mtx);
@@ -1522,3 +1362,60 @@ void ieee80211_disable_rssi_reports(struct ieee80211_vif *vif)
         _ieee80211_enable_rssi_reports(sdata, 0, 0);
 }
 EXPORT_SYMBOL(ieee80211_disable_rssi_reports);
+
+int ieee80211_add_srates_ie(struct ieee80211_vif *vif, struct sk_buff *skb)
+{
+        struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
+        struct ieee80211_local *local = sdata->local;
+        struct ieee80211_supported_band *sband;
+        int rate;
+        u8 i, rates, *pos;
+
+        sband = local->hw.wiphy->bands[local->hw.conf.channel->band];
+        rates = sband->n_bitrates;
+        if (rates > 8)
+                rates = 8;
+
+        if (skb_tailroom(skb) < rates + 2)
+                return -ENOMEM;
+
+        pos = skb_put(skb, rates + 2);
+        *pos++ = WLAN_EID_SUPP_RATES;
+        *pos++ = rates;
+        for (i = 0; i < rates; i++) {
+                rate = sband->bitrates[i].bitrate;
+                *pos++ = (u8) (rate / 5);
+        }
+
+        return 0;
+}
+
+int ieee80211_add_ext_srates_ie(struct ieee80211_vif *vif, struct sk_buff *skb)
+{
+        struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
+        struct ieee80211_local *local = sdata->local;
+        struct ieee80211_supported_band *sband;
+        int rate;
+        u8 i, exrates, *pos;
+
+        sband = local->hw.wiphy->bands[local->hw.conf.channel->band];
+        exrates = sband->n_bitrates;
+        if (exrates > 8)
+                exrates -= 8;
+        else
+                exrates = 0;
+
+        if (skb_tailroom(skb) < exrates + 2)
+                return -ENOMEM;
+
+        if (exrates) {
+                pos = skb_put(skb, exrates + 2);
+                *pos++ = WLAN_EID_EXT_SUPP_RATES;
+                *pos++ = exrates;
+                for (i = 8; i < sband->n_bitrates; i++) {
+                        rate = sband->bitrates[i].bitrate;
+                        *pos++ = (u8) (rate / 5);
+                }
+        }
+        return 0;
+}
diff --git a/net/mac80211/wme.c b/net/mac80211/wme.c
index 7a49532f14cb..fd52e695c071 100644
--- a/net/mac80211/wme.c
+++ b/net/mac80211/wme.c
@@ -72,7 +72,7 @@ u16 ieee80211_select_queue(struct ieee80211_sub_if_data *sdata,
         case NL80211_IFTYPE_AP_VLAN:
                 sta = rcu_dereference(sdata->u.vlan.sta);
                 if (sta) {
-                        qos = get_sta_flags(sta) & WLAN_STA_WME;
+                        qos = test_sta_flag(sta, WLAN_STA_WME);
                         break;
                 }
         case NL80211_IFTYPE_AP:
@@ -83,11 +83,7 @@ u16 ieee80211_select_queue(struct ieee80211_sub_if_data *sdata,
                 break;
 #ifdef CONFIG_MAC80211_MESH
         case NL80211_IFTYPE_MESH_POINT:
-                /*
-                 * XXX: This is clearly broken ... but already was before,
-                 * because ieee80211_fill_mesh_addresses() would clear A1
-                 * except for multicast addresses.
-                 */
+                ra = skb->data;
                 break;
 #endif
         case NL80211_IFTYPE_STATION:
@@ -103,7 +99,7 @@ u16 ieee80211_select_queue(struct ieee80211_sub_if_data *sdata,
         if (!sta && ra && !is_multicast_ether_addr(ra)) {
                 sta = sta_info_get(sdata, ra);
                 if (sta)
-                        qos = get_sta_flags(sta) & WLAN_STA_WME;
+                        qos = test_sta_flag(sta, WLAN_STA_WME);
         }
         rcu_read_unlock();
 
@@ -139,7 +135,8 @@ u16 ieee80211_downgrade_queue(struct ieee80211_local *local,
         return ieee802_1d_to_ac[skb->priority];
 }
 
-void ieee80211_set_qos_hdr(struct ieee80211_local *local, struct sk_buff *skb)
+void ieee80211_set_qos_hdr(struct ieee80211_sub_if_data *sdata,
+                           struct sk_buff *skb)
 {
         struct ieee80211_hdr *hdr = (void *)skb->data;
 
@@ -150,10 +147,11 @@ void ieee80211_set_qos_hdr(struct ieee80211_local *local, struct sk_buff *skb)
 
                 tid = skb->priority & IEEE80211_QOS_CTL_TAG1D_MASK;
 
-                if (unlikely(local->wifi_wme_noack_test))
+                if (unlikely(sdata->local->wifi_wme_noack_test))
                         ack_policy |= IEEE80211_QOS_CTL_ACK_POLICY_NOACK;
-                /* qos header is 2 bytes, second reserved */
+                /* qos header is 2 bytes */
                 *p++ = ack_policy | tid;
-                *p = 0;
+                *p = ieee80211_vif_is_mesh(&sdata->vif) ?
+                        (IEEE80211_QOS_CTL_MESH_CONTROL_PRESENT >> 8) : 0;
         }
 }
diff --git a/net/mac80211/wme.h b/net/mac80211/wme.h
index faead6d02026..34e166fbf4d4 100644
--- a/net/mac80211/wme.h
+++ b/net/mac80211/wme.h
@@ -17,7 +17,8 @@ extern const int ieee802_1d_to_ac[8];
 
 u16 ieee80211_select_queue(struct ieee80211_sub_if_data *sdata,
                            struct sk_buff *skb);
-void ieee80211_set_qos_hdr(struct ieee80211_local *local, struct sk_buff *skb);
+void ieee80211_set_qos_hdr(struct ieee80211_sub_if_data *sdata,
+                           struct sk_buff *skb);
 u16 ieee80211_downgrade_queue(struct ieee80211_local *local,
                               struct sk_buff *skb);
 
diff --git a/net/mac80211/work.c b/net/mac80211/work.c
index 380b9a7462b6..6c53b6d1002b 100644
--- a/net/mac80211/work.c
+++ b/net/mac80211/work.c
@@ -229,11 +229,9 @@ static void ieee80211_send_assoc(struct ieee80211_sub_if_data *sdata,
                         wk->ie_len + /* extra IEs */
                         9, /* WMM */
                         GFP_KERNEL);
-        if (!skb) {
-                printk(KERN_DEBUG "%s: failed to allocate buffer for assoc "
-                       "frame\n", sdata->name);
+        if (!skb)
                 return;
-        }
+
         skb_reserve(skb, local->hw.extra_tx_headroom);
 
         capab = WLAN_CAPABILITY_ESS;
@@ -460,7 +458,7 @@ ieee80211_direct_probe(struct ieee80211_work *wk)
          */
         ieee80211_send_probe_req(sdata, NULL, wk->probe_auth.ssid,
                                  wk->probe_auth.ssid_len, NULL, 0,
-                                 (u32) -1, true);
+                                 (u32) -1, true, false);
 
         wk->timeout = jiffies + IEEE80211_AUTH_TIMEOUT;
         run_again(local, wk->timeout);
@@ -579,7 +577,7 @@ ieee80211_offchannel_tx(struct ieee80211_work *wk)
                 /*
                  * After this, offchan_tx.frame remains but now is no
                  * longer a valid pointer -- we still need it as the
-                 * cookie for canceling this work.
+                 * cookie for canceling this work/status matching.
                  */
                 ieee80211_tx_skb(wk->sdata, wk->offchan_tx.frame);
 
@@ -1086,14 +1084,13 @@ static void ieee80211_work_work(struct work_struct *work)
                         continue;
                 if (wk->chan != local->tmp_channel)
                         continue;
-                if (ieee80211_work_ct_coexists(wk->chan_type,
-                                               local->tmp_channel_type))
+                if (!ieee80211_work_ct_coexists(wk->chan_type,
+                                                local->tmp_channel_type))
                         continue;
                 remain_off_channel = true;
         }
 
         if (!remain_off_channel && local->tmp_channel) {
-                bool on_oper_chan = ieee80211_cfg_on_oper_channel(local);
                 local->tmp_channel = NULL;
                 /* If tmp_channel wasn't operating channel, then
                  * we need to go back on-channel.
@@ -1103,7 +1100,7 @@ static void ieee80211_work_work(struct work_struct *work)
                  * we still need to do a hardware config.  Currently,
                  * we cannot be here while scanning, however.
                  */
-                if (ieee80211_cfg_on_oper_channel(local) && !on_oper_chan)
+                if (!ieee80211_cfg_on_oper_channel(local))
                         ieee80211_hw_config(local, 0);
 
                 /* At the least, we need to disable offchannel_ps,
diff --git a/net/mac80211/wpa.c b/net/mac80211/wpa.c
index 7bc8702808fa..f614ce7bb6e3 100644
--- a/net/mac80211/wpa.c
+++ b/net/mac80211/wpa.c
@@ -53,7 +53,8 @@ ieee80211_tx_h_michael_mic_add(struct ieee80211_tx_data *tx)
         }
 
         if (info->control.hw_key &&
-            !(tx->flags & IEEE80211_TX_FRAGMENTED) &&
+            (info->flags & IEEE80211_TX_CTL_DONTFRAG ||
+             tx->local->ops->set_frag_threshold) &&
             !(tx->key->conf.flags & IEEE80211_KEY_FLAG_GENERATE_MMIC)) {
                 /* hwaccel - with no need for SW-generated MMIC */
                 return TX_CONTINUE;
diff --git a/net/netfilter/core.c b/net/netfilter/core.c
index 899b71c0ff5d..afca6c78948c 100644
--- a/net/netfilter/core.c
+++ b/net/netfilter/core.c
@@ -37,7 +37,7 @@ int nf_register_afinfo(const struct nf_afinfo *afinfo)
         err = mutex_lock_interruptible(&afinfo_mutex);
         if (err < 0)
                 return err;
-        rcu_assign_pointer(nf_afinfo[afinfo->family], afinfo);
+        RCU_INIT_POINTER(nf_afinfo[afinfo->family], afinfo);
         mutex_unlock(&afinfo_mutex);
         return 0;
 }
@@ -46,7 +46,7 @@ EXPORT_SYMBOL_GPL(nf_register_afinfo);
 void nf_unregister_afinfo(const struct nf_afinfo *afinfo)
 {
         mutex_lock(&afinfo_mutex);
-        rcu_assign_pointer(nf_afinfo[afinfo->family], NULL);
+        RCU_INIT_POINTER(nf_afinfo[afinfo->family], NULL);
         mutex_unlock(&afinfo_mutex);
         synchronize_rcu();
 }
@@ -180,17 +180,16 @@ next_hook:
                 if (ret == 0)
                         ret = -EPERM;
         } else if ((verdict & NF_VERDICT_MASK) == NF_QUEUE) {
-                ret = nf_queue(skb, elem, pf, hook, indev, outdev, okfn,
-                               verdict >> NF_VERDICT_QBITS);
-                if (ret < 0) {
-                        if (ret == -ECANCELED)
+                int err = nf_queue(skb, elem, pf, hook, indev, outdev, okfn,
+                                                verdict >> NF_VERDICT_QBITS);
+                if (err < 0) {
+                        if (err == -ECANCELED)
                                 goto next_hook;
-                        if (ret == -ESRCH &&
+                        if (err == -ESRCH &&
                            (verdict & NF_VERDICT_FLAG_QUEUE_BYPASS))
                                 goto next_hook;
                         kfree_skb(skb);
                 }
-                ret = 0;
         }
         rcu_read_unlock();
         return ret;
diff --git a/net/netfilter/ipset/ip_set_core.c b/net/netfilter/ipset/ip_set_core.c
index d7e86ef9d23a..86137b558f45 100644
--- a/net/netfilter/ipset/ip_set_core.c
+++ b/net/netfilter/ipset/ip_set_core.c
@@ -1699,10 +1699,8 @@ ip_set_init(void)
 
         ip_set_list = kzalloc(sizeof(struct ip_set *) * ip_set_max,
                               GFP_KERNEL);
-        if (!ip_set_list) {
-                pr_err("ip_set: Unable to create ip_set_list\n");
+        if (!ip_set_list)
                 return -ENOMEM;
-        }
 
         ret = nfnetlink_subsys_register(&ip_set_netlink_subsys);
         if (ret != 0) {
diff --git a/net/netfilter/ipset/ip_set_getport.c b/net/netfilter/ipset/ip_set_getport.c
index 757143b2240a..052579fe389a 100644
--- a/net/netfilter/ipset/ip_set_getport.c
+++ b/net/netfilter/ipset/ip_set_getport.c
@@ -17,6 +17,7 @@
 #include <net/ipv6.h>
 
 #include <linux/netfilter/ipset/ip_set_getport.h>
+#include <linux/export.h>
 
 /* We must handle non-linear skbs */
 static bool
diff --git a/net/netfilter/ipset/pfxlen.c b/net/netfilter/ipset/pfxlen.c
index bd13d66220f1..4f29fa97044b 100644
--- a/net/netfilter/ipset/pfxlen.c
+++ b/net/netfilter/ipset/pfxlen.c
@@ -1,3 +1,4 @@
+#include <linux/export.h>
 #include <linux/netfilter/ipset/pfxlen.h>
 
 /*
diff --git a/net/netfilter/ipvs/ip_vs_core.c b/net/netfilter/ipvs/ip_vs_core.c
index 4f77bb16d22a..093cc327020f 100644
--- a/net/netfilter/ipvs/ip_vs_core.c
+++ b/net/netfilter/ipvs/ip_vs_core.c
@@ -188,14 +188,13 @@ ip_vs_conn_stats(struct ip_vs_conn *cp, struct ip_vs_service *svc)
 }
 
 
-static inline int
+static inline void
 ip_vs_set_state(struct ip_vs_conn *cp, int direction,
                 const struct sk_buff *skb,
                 struct ip_vs_proto_data *pd)
 {
-        if (unlikely(!pd->pp->state_transition))
-                return 0;
-        return pd->pp->state_transition(cp, direction, skb, pd);
+        if (likely(pd->pp->state_transition))
+                pd->pp->state_transition(cp, direction, skb, pd);
 }
 
 static inline int
@@ -530,7 +529,7 @@ int ip_vs_leave(struct ip_vs_service *svc, struct sk_buff *skb,
            a cache_bypass connection entry */
         ipvs = net_ipvs(net);
         if (ipvs->sysctl_cache_bypass && svc->fwmark && unicast) {
-                int ret, cs;
+                int ret;
                 struct ip_vs_conn *cp;
                 unsigned int flags = (svc->flags & IP_VS_SVC_F_ONEPACKET &&
                                       iph.protocol == IPPROTO_UDP)?
@@ -557,7 +556,7 @@ int ip_vs_leave(struct ip_vs_service *svc, struct sk_buff *skb,
                 ip_vs_in_stats(cp, skb);
 
                 /* set state */
-                cs = ip_vs_set_state(cp, IP_VS_DIR_INPUT, skb, pd);
+                ip_vs_set_state(cp, IP_VS_DIR_INPUT, skb, pd);
 
                 /* transmit the first SYN packet */
                 ret = cp->packet_xmit(skb, cp, pd->pp);
@@ -1490,7 +1489,7 @@ ip_vs_in(unsigned int hooknum, struct sk_buff *skb, int af)
         struct ip_vs_protocol *pp;
         struct ip_vs_proto_data *pd;
         struct ip_vs_conn *cp;
-        int ret, restart, pkts;
+        int ret, pkts;
         struct netns_ipvs *ipvs;
 
         /* Already marked as IPVS request or reply? */
@@ -1591,7 +1590,7 @@ ip_vs_in(unsigned int hooknum, struct sk_buff *skb, int af)
         }
 
         ip_vs_in_stats(cp, skb);
-        restart = ip_vs_set_state(cp, IP_VS_DIR_INPUT, skb, pd);
+        ip_vs_set_state(cp, IP_VS_DIR_INPUT, skb, pd);
         if (cp->packet_xmit)
                 ret = cp->packet_xmit(skb, cp, pp);
                 /* do not touch skb anymore */
@@ -1878,10 +1877,9 @@ static int __net_init __ip_vs_init(struct net *net)
         struct netns_ipvs *ipvs;
 
         ipvs = net_generic(net, ip_vs_net_id);
-        if (ipvs == NULL) {
-                pr_err("%s(): no memory.\n", __func__);
+        if (ipvs == NULL)
                 return -ENOMEM;
-        }
+
         /* Hold the beast until a service is registerd */
         ipvs->enable = 0;
         ipvs->net = net;
diff --git a/net/netfilter/ipvs/ip_vs_ctl.c b/net/netfilter/ipvs/ip_vs_ctl.c
index e3be48bf4dcd..008bf97cc91a 100644
--- a/net/netfilter/ipvs/ip_vs_ctl.c
+++ b/net/netfilter/ipvs/ip_vs_ctl.c
@@ -856,15 +856,12 @@ ip_vs_new_dest(struct ip_vs_service *svc, struct ip_vs_dest_user_kern *udest,
         }
 
         dest = kzalloc(sizeof(struct ip_vs_dest), GFP_KERNEL);
-        if (dest == NULL) {
-                pr_err("%s(): no memory.\n", __func__);
+        if (dest == NULL)
                 return -ENOMEM;
-        }
+
         dest->stats.cpustats = alloc_percpu(struct ip_vs_cpu_stats);
-        if (!dest->stats.cpustats) {
-                pr_err("%s() alloc_percpu failed\n", __func__);
+        if (!dest->stats.cpustats)
                 goto err_alloc;
-        }
 
         dest->af = svc->af;
         dest->protocol = svc->protocol;
@@ -1168,10 +1165,8 @@ ip_vs_add_service(struct net *net, struct ip_vs_service_user_kern *u,
                 goto out_err;
         }
         svc->stats.cpustats = alloc_percpu(struct ip_vs_cpu_stats);
-        if (!svc->stats.cpustats) {
-                pr_err("%s() alloc_percpu failed\n", __func__);
+        if (!svc->stats.cpustats)
                 goto out_err;
-        }
 
         /* I'm the first user of the service */
         atomic_set(&svc->usecnt, 0);
@@ -3326,10 +3321,8 @@ static int ip_vs_genl_set_cmd(struct sk_buff *skb, struct genl_info *info)
         int ret = 0, cmd;
         int need_full_svc = 0, need_full_dest = 0;
         struct net *net;
-        struct netns_ipvs *ipvs;
 
         net = skb_sknet(skb);
-        ipvs = net_ipvs(net);
         cmd = info->genlhdr->cmd;
 
         mutex_lock(&__ip_vs_mutex);
@@ -3421,10 +3414,8 @@ static int ip_vs_genl_get_cmd(struct sk_buff *skb, struct genl_info *info)
         void *reply;
         int ret, cmd, reply_cmd;
         struct net *net;
-        struct netns_ipvs *ipvs;
 
         net = skb_sknet(skb);
-        ipvs = net_ipvs(net);
         cmd = info->genlhdr->cmd;
 
         if (cmd == IPVS_CMD_GET_SERVICE)
@@ -3720,10 +3711,9 @@ int __net_init ip_vs_control_net_init(struct net *net)
 
         /* procfs stats */
         ipvs->tot_stats.cpustats = alloc_percpu(struct ip_vs_cpu_stats);
-        if (!ipvs->tot_stats.cpustats) {
-                pr_err("%s(): alloc_percpu.\n", __func__);
+        if (!ipvs->tot_stats.cpustats)
                 return -ENOMEM;
-        }
+
         spin_lock_init(&ipvs->tot_stats.lock);
 
         proc_net_fops_create(net, "ip_vs", 0, &ip_vs_info_fops);
diff --git a/net/netfilter/ipvs/ip_vs_dh.c b/net/netfilter/ipvs/ip_vs_dh.c
index 95fd0d14200b..1c269e56200a 100644
--- a/net/netfilter/ipvs/ip_vs_dh.c
+++ b/net/netfilter/ipvs/ip_vs_dh.c
@@ -150,10 +150,9 @@ static int ip_vs_dh_init_svc(struct ip_vs_service *svc)
         /* allocate the DH table for this service */
         tbl = kmalloc(sizeof(struct ip_vs_dh_bucket)*IP_VS_DH_TAB_SIZE,
                       GFP_ATOMIC);
-        if (tbl == NULL) {
-                pr_err("%s(): no memory\n", __func__);
+        if (tbl == NULL)
                 return -ENOMEM;
-        }
+
         svc->sched_data = tbl;
         IP_VS_DBG(6, "DH hash table (memory=%Zdbytes) allocated for "
                   "current service\n",
diff --git a/net/netfilter/ipvs/ip_vs_ftp.c b/net/netfilter/ipvs/ip_vs_ftp.c
index 4490a32ad5b2..538d74ee4f68 100644
--- a/net/netfilter/ipvs/ip_vs_ftp.c
+++ b/net/netfilter/ipvs/ip_vs_ftp.c
@@ -52,8 +52,9 @@
  * List of ports (up to IP_VS_APP_MAX_PORTS) to be handled by helper
  * First port is set to the default port.
  */
+static unsigned int ports_count = 1;
 static unsigned short ports[IP_VS_APP_MAX_PORTS] = {21, 0};
-module_param_array(ports, ushort, NULL, 0);
+module_param_array(ports, ushort, &ports_count, 0444);
 MODULE_PARM_DESC(ports, "Ports to monitor for FTP control commands");
 
 
@@ -449,7 +450,7 @@ static int __net_init __ip_vs_ftp_init(struct net *net)
         if (ret)
                 goto err_exit;
 
-        for (i=0; i<IP_VS_APP_MAX_PORTS; i++) {
+        for (i = 0; i < ports_count; i++) {
                 if (!ports[i])
                         continue;
                 ret = register_ip_vs_app_inc(net, app, app->protocol, ports[i]);
diff --git a/net/netfilter/ipvs/ip_vs_lblc.c b/net/netfilter/ipvs/ip_vs_lblc.c
index 87e40ea77a95..0f16283fd058 100644
--- a/net/netfilter/ipvs/ip_vs_lblc.c
+++ b/net/netfilter/ipvs/ip_vs_lblc.c
@@ -202,10 +202,8 @@ ip_vs_lblc_new(struct ip_vs_lblc_table *tbl, const union nf_inet_addr *daddr,
         en = ip_vs_lblc_get(dest->af, tbl, daddr);
         if (!en) {
                 en = kmalloc(sizeof(*en), GFP_ATOMIC);
-                if (!en) {
-                        pr_err("%s(): no memory\n", __func__);
+                if (!en)
                         return NULL;
-                }
 
                 en->af = dest->af;
                 ip_vs_addr_copy(dest->af, &en->addr, daddr);
@@ -345,10 +343,9 @@ static int ip_vs_lblc_init_svc(struct ip_vs_service *svc)
          *    Allocate the ip_vs_lblc_table for this service
          */
         tbl = kmalloc(sizeof(*tbl), GFP_ATOMIC);
-        if (tbl == NULL) {
-                pr_err("%s(): no memory\n", __func__);
+        if (tbl == NULL)
                 return -ENOMEM;
-        }
+
         svc->sched_data = tbl;
         IP_VS_DBG(6, "LBLC hash table (memory=%Zdbytes) allocated for "
                   "current service\n", sizeof(*tbl));
diff --git a/net/netfilter/ipvs/ip_vs_lblcr.c b/net/netfilter/ipvs/ip_vs_lblcr.c
index 90f618ab6dda..eec797f8cce7 100644
--- a/net/netfilter/ipvs/ip_vs_lblcr.c
+++ b/net/netfilter/ipvs/ip_vs_lblcr.c
@@ -112,10 +112,8 @@ ip_vs_dest_set_insert(struct ip_vs_dest_set *set, struct ip_vs_dest *dest)
         }
 
         e = kmalloc(sizeof(*e), GFP_ATOMIC);
-        if (e == NULL) {
-                pr_err("%s(): no memory\n", __func__);
+        if (e == NULL)
                 return NULL;
-        }
 
         atomic_inc(&dest->refcnt);
         e->dest = dest;
@@ -373,10 +371,8 @@ ip_vs_lblcr_new(struct ip_vs_lblcr_table *tbl, const union nf_inet_addr *daddr,
         en = ip_vs_lblcr_get(dest->af, tbl, daddr);
         if (!en) {
                 en = kmalloc(sizeof(*en), GFP_ATOMIC);
-                if (!en) {
-                        pr_err("%s(): no memory\n", __func__);
+                if (!en)
                         return NULL;
-                }
 
                 en->af = dest->af;
                 ip_vs_addr_copy(dest->af, &en->addr, daddr);
@@ -516,10 +512,9 @@ static int ip_vs_lblcr_init_svc(struct ip_vs_service *svc)
          *    Allocate the ip_vs_lblcr_table for this service
          */
         tbl = kmalloc(sizeof(*tbl), GFP_ATOMIC);
-        if (tbl == NULL) {
-                pr_err("%s(): no memory\n", __func__);
+        if (tbl == NULL)
                 return -ENOMEM;
-        }
+
         svc->sched_data = tbl;
         IP_VS_DBG(6, "LBLCR hash table (memory=%Zdbytes) allocated for "
                   "current service\n", sizeof(*tbl));
diff --git a/net/netfilter/ipvs/ip_vs_nfct.c b/net/netfilter/ipvs/ip_vs_nfct.c
index f454c80df0a7..022e77e1e766 100644
--- a/net/netfilter/ipvs/ip_vs_nfct.c
+++ b/net/netfilter/ipvs/ip_vs_nfct.c
@@ -127,7 +127,7 @@ ip_vs_update_conntrack(struct sk_buff *skb, struct ip_vs_conn *cp, int outin)
         nf_conntrack_alter_reply(ct, &new_tuple);
 }
 
-int ip_vs_confirm_conntrack(struct sk_buff *skb, struct ip_vs_conn *cp)
+int ip_vs_confirm_conntrack(struct sk_buff *skb)
 {
         return nf_conntrack_confirm(skb);
 }
diff --git a/net/netfilter/ipvs/ip_vs_proto.c b/net/netfilter/ipvs/ip_vs_proto.c
index 52d073c105e9..85312939695f 100644
--- a/net/netfilter/ipvs/ip_vs_proto.c
+++ b/net/netfilter/ipvs/ip_vs_proto.c
@@ -74,10 +74,9 @@ register_ip_vs_proto_netns(struct net *net, struct ip_vs_protocol *pp)
         struct ip_vs_proto_data *pd =
                         kzalloc(sizeof(struct ip_vs_proto_data), GFP_ATOMIC);
 
-        if (!pd) {
-                pr_err("%s(): no memory.\n", __func__);
+        if (!pd)
                 return -ENOMEM;
-        }
+
         pd->pp = pp;    /* For speed issues */
         pd->next = ipvs->proto_data_table[hash];
         ipvs->proto_data_table[hash] = pd;
diff --git a/net/netfilter/ipvs/ip_vs_proto_sctp.c b/net/netfilter/ipvs/ip_vs_proto_sctp.c
index d12ed53ec95f..1fbf7a2816f5 100644
--- a/net/netfilter/ipvs/ip_vs_proto_sctp.c
+++ b/net/netfilter/ipvs/ip_vs_proto_sctp.c
@@ -906,7 +906,7 @@ static const char *sctp_state_name(int state)
         return "?";
 }
 
-static inline int
+static inline void
 set_sctp_state(struct ip_vs_proto_data *pd, struct ip_vs_conn *cp,
                 int direction, const struct sk_buff *skb)
 {
@@ -924,7 +924,7 @@ set_sctp_state(struct ip_vs_proto_data *pd, struct ip_vs_conn *cp,
         sch = skb_header_pointer(skb, ihl + sizeof(sctp_sctphdr_t),
                                 sizeof(_sctpch), &_sctpch);
         if (sch == NULL)
-                return 0;
+                return;
 
         chunk_type = sch->type;
         /*
@@ -993,21 +993,15 @@ set_sctp_state(struct ip_vs_proto_data *pd, struct ip_vs_conn *cp,
                 cp->timeout = pd->timeout_table[cp->state = next_state];
         else    /* What to do ? */
                 cp->timeout = sctp_timeouts[cp->state = next_state];
-
-        return 1;
 }
 
-static int
+static void
 sctp_state_transition(struct ip_vs_conn *cp, int direction,
                 const struct sk_buff *skb, struct ip_vs_proto_data *pd)
 {
-        int ret = 0;
-
         spin_lock(&cp->lock);
-        ret = set_sctp_state(pd, cp, direction, skb);
+        set_sctp_state(pd, cp, direction, skb);
         spin_unlock(&cp->lock);
-
-        return ret;
 }
 
 static inline __u16 sctp_app_hashkey(__be16 port)
diff --git a/net/netfilter/ipvs/ip_vs_proto_tcp.c b/net/netfilter/ipvs/ip_vs_proto_tcp.c
index c0cc341b840d..ef8641f7af83 100644
--- a/net/netfilter/ipvs/ip_vs_proto_tcp.c
+++ b/net/netfilter/ipvs/ip_vs_proto_tcp.c
@@ -546,7 +546,7 @@ set_tcp_state(struct ip_vs_proto_data *pd, struct ip_vs_conn *cp,
 /*
  *      Handle state transitions
  */
-static int
+static void
 tcp_state_transition(struct ip_vs_conn *cp, int direction,
                      const struct sk_buff *skb,
                      struct ip_vs_proto_data *pd)
@@ -561,13 +561,11 @@ tcp_state_transition(struct ip_vs_conn *cp, int direction,
 
         th = skb_header_pointer(skb, ihl, sizeof(_tcph), &_tcph);
         if (th == NULL)
-                return 0;
+                return;
 
         spin_lock(&cp->lock);
         set_tcp_state(pd, cp, direction, th);
         spin_unlock(&cp->lock);
-
-        return 1;
 }
 
 static inline __u16 tcp_app_hashkey(__be16 port)
diff --git a/net/netfilter/ipvs/ip_vs_proto_udp.c b/net/netfilter/ipvs/ip_vs_proto_udp.c
index f1282cbe6fe3..f4b7262896bb 100644
--- a/net/netfilter/ipvs/ip_vs_proto_udp.c
+++ b/net/netfilter/ipvs/ip_vs_proto_udp.c
@@ -454,18 +454,17 @@ static const char * udp_state_name(int state)
         return udp_state_name_table[state] ? udp_state_name_table[state] : "?";
 }
 
-static int
+static void
 udp_state_transition(struct ip_vs_conn *cp, int direction,
                      const struct sk_buff *skb,
                      struct ip_vs_proto_data *pd)
 {
         if (unlikely(!pd)) {
                 pr_err("UDP no ns data\n");
-                return 0;
+                return;
         }
 
         cp->timeout = pd->timeout_table[IP_VS_UDP_S_NORMAL];
-        return 1;
 }
 
 static void __udp_init(struct net *net, struct ip_vs_proto_data *pd)
diff --git a/net/netfilter/ipvs/ip_vs_sh.c b/net/netfilter/ipvs/ip_vs_sh.c
index b5e2556c581a..33815f4fb451 100644
--- a/net/netfilter/ipvs/ip_vs_sh.c
+++ b/net/netfilter/ipvs/ip_vs_sh.c
@@ -147,10 +147,9 @@ static int ip_vs_sh_init_svc(struct ip_vs_service *svc)
         /* allocate the SH table for this service */
         tbl = kmalloc(sizeof(struct ip_vs_sh_bucket)*IP_VS_SH_TAB_SIZE,
                       GFP_ATOMIC);
-        if (tbl == NULL) {
-                pr_err("%s(): no memory\n", __func__);
+        if (tbl == NULL)
                 return -ENOMEM;
-        }
+
         svc->sched_data = tbl;
         IP_VS_DBG(6, "SH hash table (memory=%Zdbytes) allocated for "
                   "current service\n",
diff --git a/net/netfilter/ipvs/ip_vs_wrr.c b/net/netfilter/ipvs/ip_vs_wrr.c
index 1ef41f50723c..fd0d4e09876a 100644
--- a/net/netfilter/ipvs/ip_vs_wrr.c
+++ b/net/netfilter/ipvs/ip_vs_wrr.c
@@ -85,10 +85,9 @@ static int ip_vs_wrr_init_svc(struct ip_vs_service *svc)
          *    Allocate the mark variable for WRR scheduling
          */
         mark = kmalloc(sizeof(struct ip_vs_wrr_mark), GFP_ATOMIC);
-        if (mark == NULL) {
-                pr_err("%s(): no memory\n", __func__);
+        if (mark == NULL)
                 return -ENOMEM;
-        }
+
         mark->cl = &svc->destinations;
         mark->cw = 0;
         mark->mw = ip_vs_wrr_max_weight(svc);
diff --git a/net/netfilter/ipvs/ip_vs_xmit.c b/net/netfilter/ipvs/ip_vs_xmit.c
index ee319a4338b0..aa2d7206ee8a 100644
--- a/net/netfilter/ipvs/ip_vs_xmit.c
+++ b/net/netfilter/ipvs/ip_vs_xmit.c
@@ -339,7 +339,7 @@ ip_vs_dst_reset(struct ip_vs_dest *dest)
                                                                 \
         (skb)->ipvs_property = 1;                               \
         if (unlikely((cp)->flags & IP_VS_CONN_F_NFCT))          \
-                __ret = ip_vs_confirm_conntrack(skb, cp);       \
+                __ret = ip_vs_confirm_conntrack(skb);           \
         if (__ret == NF_ACCEPT) {                               \
                 nf_reset(skb);                                  \
                 skb_forward_csum(skb);                          \
diff --git a/net/netfilter/nf_conntrack_acct.c b/net/netfilter/nf_conntrack_acct.c
index 5178c691ecbf..369df3f08d42 100644
--- a/net/netfilter/nf_conntrack_acct.c
+++ b/net/netfilter/nf_conntrack_acct.c
@@ -12,6 +12,7 @@
 #include <linux/slab.h>
 #include <linux/kernel.h>
 #include <linux/moduleparam.h>
+#include <linux/export.h>
 
 #include <net/netfilter/nf_conntrack.h>
 #include <net/netfilter/nf_conntrack_extend.h>
diff --git a/net/netfilter/nf_conntrack_core.c b/net/netfilter/nf_conntrack_core.c
index f7af8b866017..7202b0631cd6 100644
--- a/net/netfilter/nf_conntrack_core.c
+++ b/net/netfilter/nf_conntrack_core.c
@@ -661,7 +661,6 @@ __nf_conntrack_alloc(struct net *net, u16 zone,
          */
         ct = kmem_cache_alloc(net->ct.nf_conntrack_cachep, gfp);
         if (ct == NULL) {
-                pr_debug("nf_conntrack_alloc: Can't alloc conntrack.\n");
                 atomic_dec(&net->ct.count);
                 return ERR_PTR(-ENOMEM);
         }
@@ -749,10 +748,8 @@ init_conntrack(struct net *net, struct nf_conn *tmpl,
 
         ct = __nf_conntrack_alloc(net, zone, tuple, &repl_tuple, GFP_ATOMIC,
                                   hash);
-        if (IS_ERR(ct)) {
-                pr_debug("Can't allocate conntrack.\n");
+        if (IS_ERR(ct))
                 return (struct nf_conntrack_tuple_hash *)ct;
-        }
 
         if (!l4proto->new(ct, skb, dataoff)) {
                 nf_conntrack_free(ct);
@@ -779,7 +776,7 @@ init_conntrack(struct net *net, struct nf_conn *tmpl,
                 if (exp->helper) {
                         help = nf_ct_helper_ext_add(ct, GFP_ATOMIC);
                         if (help)
-                                rcu_assign_pointer(help->helper, exp->helper);
+                                RCU_INIT_POINTER(help->helper, exp->helper);
                 }
 
 #ifdef CONFIG_NF_CONNTRACK_MARK
@@ -1317,7 +1314,7 @@ static void nf_conntrack_cleanup_net(struct net *net)
 void nf_conntrack_cleanup(struct net *net)
 {
         if (net_eq(net, &init_net))
-                rcu_assign_pointer(ip_ct_attach, NULL);
+                RCU_INIT_POINTER(ip_ct_attach, NULL);
 
         /* This makes sure all current packets have passed through
            netfilter framework.  Roll on, two-stage module
@@ -1327,7 +1324,7 @@ void nf_conntrack_cleanup(struct net *net)
         nf_conntrack_cleanup_net(net);
 
         if (net_eq(net, &init_net)) {
-                rcu_assign_pointer(nf_ct_destroy, NULL);
+                RCU_INIT_POINTER(nf_ct_destroy, NULL);
                 nf_conntrack_cleanup_init_net();
         }
 }
@@ -1576,11 +1573,11 @@ int nf_conntrack_init(struct net *net)
 
         if (net_eq(net, &init_net)) {
                 /* For use by REJECT target */
-                rcu_assign_pointer(ip_ct_attach, nf_conntrack_attach);
-                rcu_assign_pointer(nf_ct_destroy, destroy_conntrack);
+                RCU_INIT_POINTER(ip_ct_attach, nf_conntrack_attach);
+                RCU_INIT_POINTER(nf_ct_destroy, destroy_conntrack);
 
                 /* Howto get NAT offsets */
-                rcu_assign_pointer(nf_ct_nat_offset, NULL);
+                RCU_INIT_POINTER(nf_ct_nat_offset, NULL);
         }
         return 0;
 
diff --git a/net/netfilter/nf_conntrack_ecache.c b/net/netfilter/nf_conntrack_ecache.c
index 63a1b915a7e4..6b368be937c6 100644
--- a/net/netfilter/nf_conntrack_ecache.c
+++ b/net/netfilter/nf_conntrack_ecache.c
@@ -19,6 +19,7 @@
 #include <linux/kernel.h>
 #include <linux/netdevice.h>
 #include <linux/slab.h>
+#include <linux/export.h>
 
 #include <net/netfilter/nf_conntrack.h>
 #include <net/netfilter/nf_conntrack_core.h>
@@ -94,7 +95,7 @@ int nf_conntrack_register_notifier(struct nf_ct_event_notifier *new)
                 ret = -EBUSY;
                 goto out_unlock;
         }
-        rcu_assign_pointer(nf_conntrack_event_cb, new);
+        RCU_INIT_POINTER(nf_conntrack_event_cb, new);
         mutex_unlock(&nf_ct_ecache_mutex);
         return ret;
 
@@ -112,7 +113,7 @@ void nf_conntrack_unregister_notifier(struct nf_ct_event_notifier *new)
         notify = rcu_dereference_protected(nf_conntrack_event_cb,
                                            lockdep_is_held(&nf_ct_ecache_mutex));
         BUG_ON(notify != new);
-        rcu_assign_pointer(nf_conntrack_event_cb, NULL);
+        RCU_INIT_POINTER(nf_conntrack_event_cb, NULL);
         mutex_unlock(&nf_ct_ecache_mutex);
 }
 EXPORT_SYMBOL_GPL(nf_conntrack_unregister_notifier);
@@ -129,7 +130,7 @@ int nf_ct_expect_register_notifier(struct nf_exp_event_notifier *new)
                 ret = -EBUSY;
                 goto out_unlock;
         }
-        rcu_assign_pointer(nf_expect_event_cb, new);
+        RCU_INIT_POINTER(nf_expect_event_cb, new);
         mutex_unlock(&nf_ct_ecache_mutex);
         return ret;
 
@@ -147,7 +148,7 @@ void nf_ct_expect_unregister_notifier(struct nf_exp_event_notifier *new)
         notify = rcu_dereference_protected(nf_expect_event_cb,
                                            lockdep_is_held(&nf_ct_ecache_mutex));
         BUG_ON(notify != new);
-        rcu_assign_pointer(nf_expect_event_cb, NULL);
+        RCU_INIT_POINTER(nf_expect_event_cb, NULL);
         mutex_unlock(&nf_ct_ecache_mutex);
 }
 EXPORT_SYMBOL_GPL(nf_ct_expect_unregister_notifier);
diff --git a/net/netfilter/nf_conntrack_expect.c b/net/netfilter/nf_conntrack_expect.c
index cd1e8e0970f2..340c80d968d4 100644
--- a/net/netfilter/nf_conntrack_expect.c
+++ b/net/netfilter/nf_conntrack_expect.c
@@ -20,6 +20,8 @@
 #include <linux/percpu.h>
 #include <linux/kernel.h>
 #include <linux/jhash.h>
+#include <linux/moduleparam.h>
+#include <linux/export.h>
 #include <net/net_namespace.h>
 
 #include <net/netfilter/nf_conntrack.h>
diff --git a/net/netfilter/nf_conntrack_extend.c b/net/netfilter/nf_conntrack_extend.c
index 05ecdc281a53..4605c947dcc4 100644
--- a/net/netfilter/nf_conntrack_extend.c
+++ b/net/netfilter/nf_conntrack_extend.c
@@ -169,7 +169,7 @@ int nf_ct_extend_register(struct nf_ct_ext_type *type)
            before updating alloc_size */
         type->alloc_size = ALIGN(sizeof(struct nf_ct_ext), type->align)
                            + type->len;
-        rcu_assign_pointer(nf_ct_ext_types[type->id], type);
+        RCU_INIT_POINTER(nf_ct_ext_types[type->id], type);
         update_alloc_size(type);
 out:
         mutex_unlock(&nf_ct_ext_type_mutex);
@@ -181,7 +181,7 @@ EXPORT_SYMBOL_GPL(nf_ct_extend_register);
 void nf_ct_extend_unregister(struct nf_ct_ext_type *type)
 {
         mutex_lock(&nf_ct_ext_type_mutex);
-        rcu_assign_pointer(nf_ct_ext_types[type->id], NULL);
+        RCU_INIT_POINTER(nf_ct_ext_types[type->id], NULL);
         update_alloc_size(type);
         mutex_unlock(&nf_ct_ext_type_mutex);
         rcu_barrier(); /* Wait for completion of call_rcu()'s */
diff --git a/net/netfilter/nf_conntrack_helper.c b/net/netfilter/nf_conntrack_helper.c
index 1bdfea357955..93c4bdbfc1ae 100644
--- a/net/netfilter/nf_conntrack_helper.c
+++ b/net/netfilter/nf_conntrack_helper.c
@@ -131,7 +131,7 @@ int __nf_ct_try_assign_helper(struct nf_conn *ct, struct nf_conn *tmpl,
                 helper = __nf_ct_helper_find(&ct->tuplehash[IP_CT_DIR_REPLY].tuple);
         if (helper == NULL) {
                 if (help)
-                        rcu_assign_pointer(help->helper, NULL);
+                        RCU_INIT_POINTER(help->helper, NULL);
                 goto out;
         }
 
@@ -145,7 +145,7 @@ int __nf_ct_try_assign_helper(struct nf_conn *ct, struct nf_conn *tmpl,
                 memset(&help->help, 0, sizeof(help->help));
         }
 
-        rcu_assign_pointer(help->helper, helper);
+        RCU_INIT_POINTER(help->helper, helper);
 out:
         return ret;
 }
@@ -162,7 +162,7 @@ static inline int unhelp(struct nf_conntrack_tuple_hash *i,
                         lockdep_is_held(&nf_conntrack_lock)
                         ) == me) {
                 nf_conntrack_event(IPCT_HELPER, ct);
-                rcu_assign_pointer(help->helper, NULL);
+                RCU_INIT_POINTER(help->helper, NULL);
         }
         return 0;
 }
diff --git a/net/netfilter/nf_conntrack_netlink.c b/net/netfilter/nf_conntrack_netlink.c
index 7dec88a1755b..e58aa9b1fe8a 100644
--- a/net/netfilter/nf_conntrack_netlink.c
+++ b/net/netfilter/nf_conntrack_netlink.c
@@ -1125,7 +1125,7 @@ ctnetlink_change_helper(struct nf_conn *ct, const struct nlattr * const cda[])
                 if (help && help->helper) {
                         /* we had a helper before ... */
                         nf_ct_remove_expectations(ct);
-                        rcu_assign_pointer(help->helper, NULL);
+                        RCU_INIT_POINTER(help->helper, NULL);
                 }
 
                 return 0;
@@ -1163,7 +1163,7 @@ ctnetlink_change_helper(struct nf_conn *ct, const struct nlattr * const cda[])
                 return -EOPNOTSUPP;
         }
 
-        rcu_assign_pointer(help->helper, helper);
+        RCU_INIT_POINTER(help->helper, helper);
 
         return 0;
 }
@@ -1386,7 +1386,7 @@ ctnetlink_create_conntrack(struct net *net, u16 zone,
                         }
 
                         /* not in hash table yet so not strictly necessary */
-                        rcu_assign_pointer(help->helper, helper);
+                        RCU_INIT_POINTER(help->helper, helper);
                 }
         } else {
                 /* try an implicit helper assignation */
diff --git a/net/netfilter/nf_log.c b/net/netfilter/nf_log.c
index 20714edf6cd2..ce0c406f58a8 100644
--- a/net/netfilter/nf_log.c
+++ b/net/netfilter/nf_log.c
@@ -55,7 +55,7 @@ int nf_log_register(u_int8_t pf, struct nf_logger *logger)
                 llog = rcu_dereference_protected(nf_loggers[pf],
                                                  lockdep_is_held(&nf_log_mutex));
                 if (llog == NULL)
-                        rcu_assign_pointer(nf_loggers[pf], logger);
+                        RCU_INIT_POINTER(nf_loggers[pf], logger);
         }
 
         mutex_unlock(&nf_log_mutex);
@@ -74,7 +74,7 @@ void nf_log_unregister(struct nf_logger *logger)
                 c_logger = rcu_dereference_protected(nf_loggers[i],
                                                      lockdep_is_held(&nf_log_mutex));
                 if (c_logger == logger)
-                        rcu_assign_pointer(nf_loggers[i], NULL);
+                        RCU_INIT_POINTER(nf_loggers[i], NULL);
                 list_del(&logger->list[i]);
         }
         mutex_unlock(&nf_log_mutex);
@@ -92,7 +92,7 @@ int nf_log_bind_pf(u_int8_t pf, const struct nf_logger *logger)
                 mutex_unlock(&nf_log_mutex);
                 return -ENOENT;
         }
-        rcu_assign_pointer(nf_loggers[pf], logger);
+        RCU_INIT_POINTER(nf_loggers[pf], logger);
         mutex_unlock(&nf_log_mutex);
         return 0;
 }
@@ -103,7 +103,7 @@ void nf_log_unbind_pf(u_int8_t pf)
         if (pf >= ARRAY_SIZE(nf_loggers))
                 return;
         mutex_lock(&nf_log_mutex);
-        rcu_assign_pointer(nf_loggers[pf], NULL);
+        RCU_INIT_POINTER(nf_loggers[pf], NULL);
         mutex_unlock(&nf_log_mutex);
 }
 EXPORT_SYMBOL(nf_log_unbind_pf);
@@ -250,7 +250,7 @@ static int nf_log_proc_dostring(ctl_table *table, int write,
                         mutex_unlock(&nf_log_mutex);
                         return -ENOENT;
                 }
-                rcu_assign_pointer(nf_loggers[tindex], logger);
+                RCU_INIT_POINTER(nf_loggers[tindex], logger);
                 mutex_unlock(&nf_log_mutex);
         } else {
                 mutex_lock(&nf_log_mutex);
diff --git a/net/netfilter/nf_queue.c b/net/netfilter/nf_queue.c
index 84d0fd47636a..99ffd2885088 100644
--- a/net/netfilter/nf_queue.c
+++ b/net/netfilter/nf_queue.c
@@ -40,7 +40,7 @@ int nf_register_queue_handler(u_int8_t pf, const struct nf_queue_handler *qh)
         else if (old)
                 ret = -EBUSY;
         else {
-                rcu_assign_pointer(queue_handler[pf], qh);
+                RCU_INIT_POINTER(queue_handler[pf], qh);
                 ret = 0;
         }
         mutex_unlock(&queue_handler_mutex);
@@ -65,7 +65,7 @@ int nf_unregister_queue_handler(u_int8_t pf, const struct nf_queue_handler *qh)
                 return -EINVAL;
         }
 
-        rcu_assign_pointer(queue_handler[pf], NULL);
+        RCU_INIT_POINTER(queue_handler[pf], NULL);
         mutex_unlock(&queue_handler_mutex);
 
         synchronize_rcu();
@@ -84,7 +84,7 @@ void nf_unregister_queue_handlers(const struct nf_queue_handler *qh)
                                 queue_handler[pf],
                                 lockdep_is_held(&queue_handler_mutex)
                                 ) == qh)
-                        rcu_assign_pointer(queue_handler[pf], NULL);
+                        RCU_INIT_POINTER(queue_handler[pf], NULL);
         }
         mutex_unlock(&queue_handler_mutex);
 
diff --git a/net/netfilter/nfnetlink.c b/net/netfilter/nfnetlink.c
index 1905976b5135..c879c1a2370e 100644
--- a/net/netfilter/nfnetlink.c
+++ b/net/netfilter/nfnetlink.c
@@ -59,7 +59,7 @@ int nfnetlink_subsys_register(const struct nfnetlink_subsystem *n)
                 nfnl_unlock();
                 return -EBUSY;
         }
-        rcu_assign_pointer(subsys_table[n->subsys_id], n);
+        RCU_INIT_POINTER(subsys_table[n->subsys_id], n);
         nfnl_unlock();
 
         return 0;
@@ -210,7 +210,7 @@ static int __net_init nfnetlink_net_init(struct net *net)
         if (!nfnl)
                 return -ENOMEM;
         net->nfnl_stash = nfnl;
-        rcu_assign_pointer(net->nfnl, nfnl);
+        RCU_INIT_POINTER(net->nfnl, nfnl);
         return 0;
 }
 
@@ -219,7 +219,7 @@ static void __net_exit nfnetlink_net_exit_batch(struct list_head *net_exit_list)
         struct net *net;
 
         list_for_each_entry(net, net_exit_list, exit_list)
-                rcu_assign_pointer(net->nfnl, NULL);
+                RCU_INIT_POINTER(net->nfnl, NULL);
         synchronize_net();
         list_for_each_entry(net, net_exit_list, exit_list)
                 netlink_kernel_release(net->nfnl_stash);
diff --git a/net/netfilter/nfnetlink_log.c b/net/netfilter/nfnetlink_log.c
index 2d8158acf6fa..66b2c54c544f 100644
--- a/net/netfilter/nfnetlink_log.c
+++ b/net/netfilter/nfnetlink_log.c
@@ -307,17 +307,14 @@ nfulnl_alloc_skb(unsigned int inst_size, unsigned int pkt_size)
         n = max(inst_size, pkt_size);
         skb = alloc_skb(n, GFP_ATOMIC);
         if (!skb) {
-                pr_notice("nfnetlink_log: can't alloc whole buffer (%u bytes)\n",
-                        inst_size);
-
                 if (n > pkt_size) {
                         /* try to allocate only as much as we need for current
                          * packet */
 
                         skb = alloc_skb(pkt_size, GFP_ATOMIC);
                         if (!skb)
-                                pr_err("nfnetlink_log: can't even alloc %u "
-                                       "bytes\n", pkt_size);
+                                pr_err("nfnetlink_log: can't even alloc %u bytes\n",
+                                       pkt_size);
                 }
         }
 
diff --git a/net/netfilter/x_tables.c b/net/netfilter/x_tables.c
index 71441b934ffd..8d987c3573fd 100644
--- a/net/netfilter/x_tables.c
+++ b/net/netfilter/x_tables.c
@@ -14,6 +14,7 @@
  */
 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
 #include <linux/kernel.h>
+#include <linux/module.h>
 #include <linux/socket.h>
 #include <linux/net.h>
 #include <linux/proc_fs.h>
diff --git a/net/netfilter/xt_IDLETIMER.c b/net/netfilter/xt_IDLETIMER.c
index 3bdd443aaf15..f407ebc13481 100644
--- a/net/netfilter/xt_IDLETIMER.c
+++ b/net/netfilter/xt_IDLETIMER.c
@@ -122,14 +122,12 @@ static int idletimer_tg_create(struct idletimer_tg_info *info)
 
         info->timer = kmalloc(sizeof(*info->timer), GFP_KERNEL);
         if (!info->timer) {
-                pr_debug("couldn't alloc timer\n");
                 ret = -ENOMEM;
                 goto out;
         }
 
         info->timer->attr.attr.name = kstrdup(info->label, GFP_KERNEL);
         if (!info->timer->attr.attr.name) {
-                pr_debug("couldn't alloc attribute name\n");
                 ret = -ENOMEM;
                 goto out_free_timer;
         }
diff --git a/net/netfilter/xt_hashlimit.c b/net/netfilter/xt_hashlimit.c
index 9228ee0dc11a..dfd52bad1523 100644
--- a/net/netfilter/xt_hashlimit.c
+++ b/net/netfilter/xt_hashlimit.c
@@ -176,10 +176,7 @@ dsthash_alloc_init(struct xt_hashlimit_htable *ht,
                 ent = NULL;
         } else
                 ent = kmem_cache_alloc(hashlimit_cachep, GFP_ATOMIC);
-        if (!ent) {
-                if (net_ratelimit())
-                        pr_err("cannot allocate dsthash_ent\n");
-        } else {
+        if (ent) {
                 memcpy(&ent->dst, dst, sizeof(ent->dst));
                 spin_lock_init(&ent->lock);
 
diff --git a/net/netfilter/xt_quota.c b/net/netfilter/xt_quota.c
index 70eb2b4984dd..44c8eb4c9d66 100644
--- a/net/netfilter/xt_quota.c
+++ b/net/netfilter/xt_quota.c
@@ -9,6 +9,7 @@
 
 #include <linux/netfilter/x_tables.h>
 #include <linux/netfilter/xt_quota.h>
+#include <linux/module.h>
 
 struct xt_quota_priv {
         spinlock_t      lock;
diff --git a/net/netfilter/xt_statistic.c b/net/netfilter/xt_statistic.c
index 42ecb71d445f..4fe4fb4276d0 100644
--- a/net/netfilter/xt_statistic.c
+++ b/net/netfilter/xt_statistic.c
@@ -16,6 +16,7 @@
 
 #include <linux/netfilter/xt_statistic.h>
 #include <linux/netfilter/x_tables.h>
+#include <linux/module.h>
 
 struct xt_statistic_priv {
         atomic_t count;
diff --git a/net/netlabel/netlabel_domainhash.c b/net/netlabel/netlabel_domainhash.c
index 7d8083cde34f..3f905e5370c2 100644
--- a/net/netlabel/netlabel_domainhash.c
+++ b/net/netlabel/netlabel_domainhash.c
@@ -282,7 +282,7 @@ int __init netlbl_domhsh_init(u32 size)
                 INIT_LIST_HEAD(&hsh_tbl->tbl[iter]);
 
         spin_lock(&netlbl_domhsh_lock);
-        rcu_assign_pointer(netlbl_domhsh, hsh_tbl);
+        RCU_INIT_POINTER(netlbl_domhsh, hsh_tbl);
         spin_unlock(&netlbl_domhsh_lock);
 
         return 0;
@@ -330,7 +330,7 @@ int netlbl_domhsh_add(struct netlbl_dom_map *entry,
                                     &rcu_dereference(netlbl_domhsh)->tbl[bkt]);
                 } else {
                         INIT_LIST_HEAD(&entry->list);
-                        rcu_assign_pointer(netlbl_domhsh_def, entry);
+                        RCU_INIT_POINTER(netlbl_domhsh_def, entry);
                 }
 
                 if (entry->type == NETLBL_NLTYPE_ADDRSELECT) {
@@ -451,7 +451,7 @@ int netlbl_domhsh_remove_entry(struct netlbl_dom_map *entry,
                 if (entry != rcu_dereference(netlbl_domhsh_def))
                         list_del_rcu(&entry->list);
                 else
-                        rcu_assign_pointer(netlbl_domhsh_def, NULL);
+                        RCU_INIT_POINTER(netlbl_domhsh_def, NULL);
         } else
                 ret_val = -ENOENT;
         spin_unlock(&netlbl_domhsh_lock);
diff --git a/net/netlabel/netlabel_unlabeled.c b/net/netlabel/netlabel_unlabeled.c
index e6e823656f9d..e251c2c88521 100644
--- a/net/netlabel/netlabel_unlabeled.c
+++ b/net/netlabel/netlabel_unlabeled.c
@@ -354,7 +354,7 @@ static struct netlbl_unlhsh_iface *netlbl_unlhsh_add_iface(int ifindex)
                 INIT_LIST_HEAD(&iface->list);
                 if (netlbl_unlhsh_rcu_deref(netlbl_unlhsh_def) != NULL)
                         goto add_iface_failure;
-                rcu_assign_pointer(netlbl_unlhsh_def, iface);
+                RCU_INIT_POINTER(netlbl_unlhsh_def, iface);
         }
         spin_unlock(&netlbl_unlhsh_lock);
 
@@ -621,7 +621,7 @@ static void netlbl_unlhsh_condremove_iface(struct netlbl_unlhsh_iface *iface)
         if (iface->ifindex > 0)
                 list_del_rcu(&iface->list);
         else
-                rcu_assign_pointer(netlbl_unlhsh_def, NULL);
+                RCU_INIT_POINTER(netlbl_unlhsh_def, NULL);
         spin_unlock(&netlbl_unlhsh_lock);
 
         call_rcu(&iface->rcu, netlbl_unlhsh_free_iface);
@@ -1449,7 +1449,7 @@ int __init netlbl_unlabel_init(u32 size)
 
         rcu_read_lock();
         spin_lock(&netlbl_unlhsh_lock);
-        rcu_assign_pointer(netlbl_unlhsh, hsh_tbl);
+        RCU_INIT_POINTER(netlbl_unlhsh, hsh_tbl);
         spin_unlock(&netlbl_unlhsh_lock);
         rcu_read_unlock();
 
diff --git a/net/netlink/af_netlink.c b/net/netlink/af_netlink.c
index 0a4db0211da0..1201b6d4183d 100644
--- a/net/netlink/af_netlink.c
+++ b/net/netlink/af_netlink.c
@@ -1324,10 +1324,9 @@ static int netlink_sendmsg(struct kiocb *kiocb, struct socket *sock,
         if (msg->msg_flags&MSG_OOB)
                 return -EOPNOTSUPP;
 
-        if (NULL == siocb->scm) {
+        if (NULL == siocb->scm)
                 siocb->scm = &scm;
-                memset(&scm, 0, sizeof(scm));
-        }
+
         err = scm_send(sock, msg, siocb->scm);
         if (err < 0)
                 return err;
@@ -1578,7 +1577,7 @@ int __netlink_change_ngroups(struct sock *sk, unsigned int groups)
                 new = kzalloc(sizeof(*new) + NLGRPSZ(groups), GFP_ATOMIC);
                 if (!new)
                         return -ENOMEM;
-                old = rcu_dereference_raw(tbl->listeners);
+                old = rcu_dereference_protected(tbl->listeners, 1);
                 memcpy(new->masks, old->masks, NLGRPSZ(tbl->groups));
                 rcu_assign_pointer(tbl->listeners, new);
 
diff --git a/net/netrom/nr_route.c b/net/netrom/nr_route.c
index cd5ddb2ebc43..915a87ba23e1 100644
--- a/net/netrom/nr_route.c
+++ b/net/netrom/nr_route.c
@@ -37,6 +37,7 @@
 #include <linux/spinlock.h>
 #include <net/netrom.h>
 #include <linux/seq_file.h>
+#include <linux/export.h>
 
 static unsigned int nr_neigh_no = 1;
 
diff --git a/net/nfc/Kconfig b/net/nfc/Kconfig
index 33e095b124b3..58cddadf8e8e 100644
--- a/net/nfc/Kconfig
+++ b/net/nfc/Kconfig
@@ -13,4 +13,6 @@ menuconfig NFC
           To compile this support as a module, choose M here: the module will
           be called nfc.
 
+source "net/nfc/nci/Kconfig"
+
 source "drivers/nfc/Kconfig"
diff --git a/net/nfc/Makefile b/net/nfc/Makefile
index 16250c353851..fbb550f2377b 100644
--- a/net/nfc/Makefile
+++ b/net/nfc/Makefile
@@ -3,5 +3,6 @@
 #
 
 obj-$(CONFIG_NFC) += nfc.o
+obj-$(CONFIG_NFC_NCI) += nci/
 
 nfc-objs := core.o netlink.o af_nfc.o rawsock.o
diff --git a/net/nfc/af_nfc.c b/net/nfc/af_nfc.c
index e982cef8f49d..da67756425ce 100644
--- a/net/nfc/af_nfc.c
+++ b/net/nfc/af_nfc.c
@@ -22,6 +22,7 @@
  */
 
 #include <linux/nfc.h>
+#include <linux/module.h>
 
 #include "nfc.h"
 
diff --git a/net/nfc/core.c b/net/nfc/core.c
index b6fd4e1f2057..47e02c1b8c02 100644
--- a/net/nfc/core.c
+++ b/net/nfc/core.c
@@ -53,6 +53,80 @@ int nfc_printk(const char *level, const char *format, ...)
 EXPORT_SYMBOL(nfc_printk);
 
 /**
+ * nfc_dev_up - turn on the NFC device
+ *
+ * @dev: The nfc device to be turned on
+ *
+ * The device remains up until the nfc_dev_down function is called.
+ */
+int nfc_dev_up(struct nfc_dev *dev)
+{
+        int rc = 0;
+
+        nfc_dbg("dev_name=%s", dev_name(&dev->dev));
+
+        device_lock(&dev->dev);
+
+        if (!device_is_registered(&dev->dev)) {
+                rc = -ENODEV;
+                goto error;
+        }
+
+        if (dev->dev_up) {
+                rc = -EALREADY;
+                goto error;
+        }
+
+        if (dev->ops->dev_up)
+                rc = dev->ops->dev_up(dev);
+
+        if (!rc)
+                dev->dev_up = true;
+
+error:
+        device_unlock(&dev->dev);
+        return rc;
+}
+
+/**
+ * nfc_dev_down - turn off the NFC device
+ *
+ * @dev: The nfc device to be turned off
+ */
+int nfc_dev_down(struct nfc_dev *dev)
+{
+        int rc = 0;
+
+        nfc_dbg("dev_name=%s", dev_name(&dev->dev));
+
+        device_lock(&dev->dev);
+
+        if (!device_is_registered(&dev->dev)) {
+                rc = -ENODEV;
+                goto error;
+        }
+
+        if (!dev->dev_up) {
+                rc = -EALREADY;
+                goto error;
+        }
+
+        if (dev->polling || dev->remote_activated) {
+                rc = -EBUSY;
+                goto error;
+        }
+
+        if (dev->ops->dev_down)
+                dev->ops->dev_down(dev);
+
+        dev->dev_up = false;
+
+error:
+        device_unlock(&dev->dev);
+        return rc;
+}
+
+/**
  * nfc_start_poll - start polling for nfc targets
  *
  * @dev: The nfc device that must start polling
@@ -144,6 +218,8 @@ int nfc_activate_target(struct nfc_dev *dev, u32 target_idx, u32 protocol)
         }
 
         rc = dev->ops->activate_target(dev, target_idx, protocol);
+        if (!rc)
+                dev->remote_activated = true;
 
 error:
         device_unlock(&dev->dev);
@@ -170,6 +246,7 @@ int nfc_deactivate_target(struct nfc_dev *dev, u32 target_idx)
         }
 
         dev->ops->deactivate_target(dev, target_idx);
+        dev->remote_activated = false;
 
 error:
         device_unlock(&dev->dev);
@@ -322,7 +399,9 @@ struct nfc_dev *nfc_get_device(unsigned idx)
  * @supported_protocols: NFC protocols supported by the device
  */
 struct nfc_dev *nfc_allocate_device(struct nfc_ops *ops,
-                                        u32 supported_protocols)
+                                        u32 supported_protocols,
+                                        int tx_headroom,
+                                        int tx_tailroom)
 {
         static atomic_t dev_no = ATOMIC_INIT(0);
         struct nfc_dev *dev;
@@ -345,6 +424,8 @@ struct nfc_dev *nfc_allocate_device(struct nfc_ops *ops,
 
         dev->ops = ops;
         dev->supported_protocols = supported_protocols;
+        dev->tx_headroom = tx_headroom;
+        dev->tx_tailroom = tx_tailroom;
 
         spin_lock_init(&dev->targets_lock);
         nfc_genl_data_init(&dev->genl_data);
diff --git a/net/nfc/nci/Kconfig b/net/nfc/nci/Kconfig
new file mode 100644
index 000000000000..decdc49b26d8
--- /dev/null
+++ b/net/nfc/nci/Kconfig
@@ -0,0 +1,10 @@
+config NFC_NCI
+        depends on NFC && EXPERIMENTAL
+        tristate "NCI protocol support (EXPERIMENTAL)"
+        default n
+        help
+          NCI (NFC Controller Interface) is a communication protocol between
+          an NFC Controller (NFCC) and a Device Host (DH).
+
+          Say Y here to compile NCI support into the kernel or say M to
+          compile it as module (nci).
diff --git a/net/nfc/nci/Makefile b/net/nfc/nci/Makefile
new file mode 100644
index 000000000000..cdb3a2e44471
--- /dev/null
+++ b/net/nfc/nci/Makefile
@@ -0,0 +1,7 @@
+#
+# Makefile for the Linux NFC NCI layer.
+#
+
+obj-$(CONFIG_NFC_NCI) += nci.o
+
+nci-objs := core.o data.o lib.o ntf.o rsp.o
\ No newline at end of file
diff --git a/net/nfc/nci/core.c b/net/nfc/nci/core.c
new file mode 100644
index 000000000000..3925c6578767
--- /dev/null
+++ b/net/nfc/nci/core.c
@@ -0,0 +1,798 @@
+/*
+ *  The NFC Controller Interface is the communication protocol between an
+ *  NFC Controller (NFCC) and a Device Host (DH).
+ *
+ *  Copyright (C) 2011 Texas Instruments, Inc.
+ *
+ *  Written by Ilan Elias <ilane@ti.com>
+ *
+ *  Acknowledgements:
+ *  This file is based on hci_core.c, which was written
+ *  by Maxim Krasnyansky.
+ *
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License version 2
+ *  as published by the Free Software Foundation
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program; if not, write to the Free Software
+ *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ *
+ */
+
+#include <linux/types.h>
+#include <linux/workqueue.h>
+#include <linux/completion.h>
+#include <linux/export.h>
+#include <linux/sched.h>
+#include <linux/bitops.h>
+#include <linux/skbuff.h>
+
+#include "../nfc.h"
+#include <net/nfc/nci.h>
+#include <net/nfc/nci_core.h>
+#include <linux/nfc.h>
+
+static void nci_cmd_work(struct work_struct *work);
+static void nci_rx_work(struct work_struct *work);
+static void nci_tx_work(struct work_struct *work);
+
+/* ---- NCI requests ---- */
+
+void nci_req_complete(struct nci_dev *ndev, int result)
+{
+        if (ndev->req_status == NCI_REQ_PEND) {
+                ndev->req_result = result;
+                ndev->req_status = NCI_REQ_DONE;
+                complete(&ndev->req_completion);
+        }
+}
+
+static void nci_req_cancel(struct nci_dev *ndev, int err)
+{
+        if (ndev->req_status == NCI_REQ_PEND) {
+                ndev->req_result = err;
+                ndev->req_status = NCI_REQ_CANCELED;
+                complete(&ndev->req_completion);
+        }
+}
+
+/* Execute request and wait for completion. */
+static int __nci_request(struct nci_dev *ndev,
+        void (*req)(struct nci_dev *ndev, unsigned long opt),
+        unsigned long opt,
+        __u32 timeout)
+{
+        int rc = 0;
+        unsigned long completion_rc;
+
+        ndev->req_status = NCI_REQ_PEND;
+
+        init_completion(&ndev->req_completion);
+        req(ndev, opt);
+        completion_rc = wait_for_completion_interruptible_timeout(
+                                                        &ndev->req_completion,
+                                                        timeout);
+
+        nfc_dbg("wait_for_completion return %ld", completion_rc);
+
+        if (completion_rc > 0) {
+                switch (ndev->req_status) {
+                case NCI_REQ_DONE:
+                        rc = nci_to_errno(ndev->req_result);
+                        break;
+
+                case NCI_REQ_CANCELED:
+                        rc = -ndev->req_result;
+                        break;
+
+                default:
+                        rc = -ETIMEDOUT;
+                        break;
+                }
+        } else {
+                nfc_err("wait_for_completion_interruptible_timeout failed %ld",
+                        completion_rc);
+
+                rc = ((completion_rc == 0) ? (-ETIMEDOUT) : (completion_rc));
+        }
+
+        ndev->req_status = ndev->req_result = 0;
+
+        return rc;
+}
+
+static inline int nci_request(struct nci_dev *ndev,
+                void (*req)(struct nci_dev *ndev, unsigned long opt),
+                unsigned long opt, __u32 timeout)
+{
+        int rc;
+
+        if (!test_bit(NCI_UP, &ndev->flags))
+                return -ENETDOWN;
+
+        /* Serialize all requests */
+        mutex_lock(&ndev->req_lock);
+        rc = __nci_request(ndev, req, opt, timeout);
+        mutex_unlock(&ndev->req_lock);
+
+        return rc;
+}
+
+static void nci_reset_req(struct nci_dev *ndev, unsigned long opt)
+{
+        nci_send_cmd(ndev, NCI_OP_CORE_RESET_CMD, 0, NULL);
+}
+
+static void nci_init_req(struct nci_dev *ndev, unsigned long opt)
+{
+        nci_send_cmd(ndev, NCI_OP_CORE_INIT_CMD, 0, NULL);
+}
+
+static void nci_init_complete_req(struct nci_dev *ndev, unsigned long opt)
+{
+        struct nci_core_conn_create_cmd conn_cmd;
+        struct nci_rf_disc_map_cmd cmd;
+        struct disc_map_config *cfg = cmd.mapping_configs;
+        __u8 *num = &cmd.num_mapping_configs;
+        int i;
+
+        /* create static rf connection */
+        conn_cmd.target_handle = 0;
+        conn_cmd.num_target_specific_params = 0;
+        nci_send_cmd(ndev, NCI_OP_CORE_CONN_CREATE_CMD, 2, &conn_cmd);
+
+        /* set rf mapping configurations */
+        *num = 0;
+
+        /* by default mapping is set to NCI_RF_INTERFACE_FRAME */
+        for (i = 0; i < ndev->num_supported_rf_interfaces; i++) {
+                if (ndev->supported_rf_interfaces[i] ==
+                        NCI_RF_INTERFACE_ISO_DEP) {
+                        cfg[*num].rf_protocol = NCI_RF_PROTOCOL_ISO_DEP;
+                        cfg[*num].mode = NCI_DISC_MAP_MODE_BOTH;
+                        cfg[*num].rf_interface_type = NCI_RF_INTERFACE_ISO_DEP;
+                        (*num)++;
+                } else if (ndev->supported_rf_interfaces[i] ==
+                        NCI_RF_INTERFACE_NFC_DEP) {
+                        cfg[*num].rf_protocol = NCI_RF_PROTOCOL_NFC_DEP;
+                        cfg[*num].mode = NCI_DISC_MAP_MODE_BOTH;
+                        cfg[*num].rf_interface_type = NCI_RF_INTERFACE_NFC_DEP;
+                        (*num)++;
+                }
+
+                if (*num == NCI_MAX_NUM_MAPPING_CONFIGS)
+                        break;
+        }
+
+        nci_send_cmd(ndev, NCI_OP_RF_DISCOVER_MAP_CMD,
+                (1 + ((*num)*sizeof(struct disc_map_config))),
+                &cmd);
+}
+
+static void nci_rf_discover_req(struct nci_dev *ndev, unsigned long opt)
+{
+        struct nci_rf_disc_cmd cmd;
+        __u32 protocols = opt;
+
+        cmd.num_disc_configs = 0;
+
+        if ((cmd.num_disc_configs < NCI_MAX_NUM_RF_CONFIGS) &&
+                (protocols & NFC_PROTO_JEWEL_MASK
+                || protocols & NFC_PROTO_MIFARE_MASK
+                || protocols & NFC_PROTO_ISO14443_MASK
+                || protocols & NFC_PROTO_NFC_DEP_MASK)) {
+                cmd.disc_configs[cmd.num_disc_configs].type =
+                NCI_DISCOVERY_TYPE_POLL_A_PASSIVE;
+                cmd.disc_configs[cmd.num_disc_configs].frequency = 1;
+                cmd.num_disc_configs++;
+        }
+
+        if ((cmd.num_disc_configs < NCI_MAX_NUM_RF_CONFIGS) &&
+                (protocols & NFC_PROTO_ISO14443_MASK)) {
+                cmd.disc_configs[cmd.num_disc_configs].type =
+                NCI_DISCOVERY_TYPE_POLL_B_PASSIVE;
+                cmd.disc_configs[cmd.num_disc_configs].frequency = 1;
+                cmd.num_disc_configs++;
+        }
+
+        if ((cmd.num_disc_configs < NCI_MAX_NUM_RF_CONFIGS) &&
+                (protocols & NFC_PROTO_FELICA_MASK
+                || protocols & NFC_PROTO_NFC_DEP_MASK)) {
+                cmd.disc_configs[cmd.num_disc_configs].type =
+                NCI_DISCOVERY_TYPE_POLL_F_PASSIVE;
+                cmd.disc_configs[cmd.num_disc_configs].frequency = 1;
+                cmd.num_disc_configs++;
+        }
+
+        nci_send_cmd(ndev, NCI_OP_RF_DISCOVER_CMD,
+                (1 + (cmd.num_disc_configs*sizeof(struct disc_config))),
+                &cmd);
+}
+
+static void nci_rf_deactivate_req(struct nci_dev *ndev, unsigned long opt)
+{
+        struct nci_rf_deactivate_cmd cmd;
+
+        cmd.type = NCI_DEACTIVATE_TYPE_IDLE_MODE;
+
+        nci_send_cmd(ndev, NCI_OP_RF_DEACTIVATE_CMD,
+                        sizeof(struct nci_rf_deactivate_cmd),
+                        &cmd);
+}
+
+static int nci_open_device(struct nci_dev *ndev)
+{
+        int rc = 0;
+
+        mutex_lock(&ndev->req_lock);
+
+        if (test_bit(NCI_UP, &ndev->flags)) {
+                rc = -EALREADY;
+                goto done;
+        }
+
+        if (ndev->ops->open(ndev)) {
+                rc = -EIO;
+                goto done;
+        }
+
+        atomic_set(&ndev->cmd_cnt, 1);
+
+        set_bit(NCI_INIT, &ndev->flags);
+
+        rc = __nci_request(ndev, nci_reset_req, 0,
+                                msecs_to_jiffies(NCI_RESET_TIMEOUT));
+
+        if (!rc) {
+                rc = __nci_request(ndev, nci_init_req, 0,
+                                msecs_to_jiffies(NCI_INIT_TIMEOUT));
+        }
+
+        if (!rc) {
+                rc = __nci_request(ndev, nci_init_complete_req, 0,
+                                msecs_to_jiffies(NCI_INIT_TIMEOUT));
+        }
+
+        clear_bit(NCI_INIT, &ndev->flags);
+
+        if (!rc) {
+                set_bit(NCI_UP, &ndev->flags);
+        } else {
+                /* Init failed, cleanup */
+                skb_queue_purge(&ndev->cmd_q);
+                skb_queue_purge(&ndev->rx_q);
+                skb_queue_purge(&ndev->tx_q);
+
+                ndev->ops->close(ndev);
+                ndev->flags = 0;
+        }
+
+done:
+        mutex_unlock(&ndev->req_lock);
+        return rc;
+}
+
+static int nci_close_device(struct nci_dev *ndev)
+{
+        nci_req_cancel(ndev, ENODEV);
+        mutex_lock(&ndev->req_lock);
+
+        if (!test_and_clear_bit(NCI_UP, &ndev->flags)) {
+                del_timer_sync(&ndev->cmd_timer);
+                mutex_unlock(&ndev->req_lock);
+                return 0;
+        }
+
+        /* Drop RX and TX queues */
+        skb_queue_purge(&ndev->rx_q);
+        skb_queue_purge(&ndev->tx_q);
+
+        /* Flush RX and TX wq */
+        flush_workqueue(ndev->rx_wq);
+        flush_workqueue(ndev->tx_wq);
+
+        /* Reset device */
+        skb_queue_purge(&ndev->cmd_q);
+        atomic_set(&ndev->cmd_cnt, 1);
+
+        set_bit(NCI_INIT, &ndev->flags);
+        __nci_request(ndev, nci_reset_req, 0,
+                                msecs_to_jiffies(NCI_RESET_TIMEOUT));
+        clear_bit(NCI_INIT, &ndev->flags);
+
+        /* Flush cmd wq */
+        flush_workqueue(ndev->cmd_wq);
+
+        /* After this point our queues are empty
+         * and no works are scheduled. */
+        ndev->ops->close(ndev);
+
+        /* Clear flags */
+        ndev->flags = 0;
+
+        mutex_unlock(&ndev->req_lock);
+
+        return 0;
+}
+
+/* NCI command timer function */
+static void nci_cmd_timer(unsigned long arg)
+{
+        struct nci_dev *ndev = (void *) arg;
+
+        nfc_dbg("entry");
+
+        atomic_set(&ndev->cmd_cnt, 1);
+        queue_work(ndev->cmd_wq, &ndev->cmd_work);
+}
+
+static int nci_dev_up(struct nfc_dev *nfc_dev)
+{
+        struct nci_dev *ndev = nfc_get_drvdata(nfc_dev);
+
+        nfc_dbg("entry");
+
+        return nci_open_device(ndev);
+}
+
+static int nci_dev_down(struct nfc_dev *nfc_dev)
+{
+        struct nci_dev *ndev = nfc_get_drvdata(nfc_dev);
+
+        nfc_dbg("entry");
+
+        return nci_close_device(ndev);
+}
+
+static int nci_start_poll(struct nfc_dev *nfc_dev, __u32 protocols)
+{
+        struct nci_dev *ndev = nfc_get_drvdata(nfc_dev);
+        int rc;
+
+        nfc_dbg("entry");
+
+        if (test_bit(NCI_DISCOVERY, &ndev->flags)) {
+                nfc_err("unable to start poll, since poll is already active");
+                return -EBUSY;
+        }
+
+        if (ndev->target_active_prot) {
+                nfc_err("there is an active target");
+                return -EBUSY;
+        }
+
+        if (test_bit(NCI_POLL_ACTIVE, &ndev->flags)) {
+                nfc_dbg("target is active, implicitly deactivate...");
+
+                rc = nci_request(ndev, nci_rf_deactivate_req, 0,
+                        msecs_to_jiffies(NCI_RF_DEACTIVATE_TIMEOUT));
+                if (rc)
+                        return -EBUSY;
+        }
+
+        rc = nci_request(ndev, nci_rf_discover_req, protocols,
+                msecs_to_jiffies(NCI_RF_DISC_TIMEOUT));
+
+        if (!rc)
+                ndev->poll_prots = protocols;
+
+        return rc;
+}
+
+static void nci_stop_poll(struct nfc_dev *nfc_dev)
+{
+        struct nci_dev *ndev = nfc_get_drvdata(nfc_dev);
+
+        nfc_dbg("entry");
+
+        if (!test_bit(NCI_DISCOVERY, &ndev->flags)) {
+                nfc_err("unable to stop poll, since poll is not active");
+                return;
+        }
+
+        nci_request(ndev, nci_rf_deactivate_req, 0,
+                msecs_to_jiffies(NCI_RF_DEACTIVATE_TIMEOUT));
+}
+
+static int nci_activate_target(struct nfc_dev *nfc_dev, __u32 target_idx,
+                                __u32 protocol)
+{
+        struct nci_dev *ndev = nfc_get_drvdata(nfc_dev);
+
+        nfc_dbg("entry, target_idx %d, protocol 0x%x", target_idx, protocol);
+
+        if (!test_bit(NCI_POLL_ACTIVE, &ndev->flags)) {
+                nfc_err("there is no available target to activate");
+                return -EINVAL;
+        }
+
+        if (ndev->target_active_prot) {
+                nfc_err("there is already an active target");
+                return -EBUSY;
+        }
+
+        if (!(ndev->target_available_prots & (1 << protocol))) {
+                nfc_err("target does not support the requested protocol 0x%x",
+                        protocol);
+                return -EINVAL;
+        }
+
+        ndev->target_active_prot = protocol;
+        ndev->target_available_prots = 0;
+
+        return 0;
+}
+
+static void nci_deactivate_target(struct nfc_dev *nfc_dev, __u32 target_idx)
+{
+        struct nci_dev *ndev = nfc_get_drvdata(nfc_dev);
+
+        nfc_dbg("entry, target_idx %d", target_idx);
+
+        if (!ndev->target_active_prot) {
+                nfc_err("unable to deactivate target, no active target");
+                return;
+        }
+
+        ndev->target_active_prot = 0;
+
+        if (test_bit(NCI_POLL_ACTIVE, &ndev->flags)) {
+                nci_request(ndev, nci_rf_deactivate_req, 0,
+                        msecs_to_jiffies(NCI_RF_DEACTIVATE_TIMEOUT));
+        }
+}
+
+static int nci_data_exchange(struct nfc_dev *nfc_dev, __u32 target_idx,
+                                                struct sk_buff *skb,
+                                                data_exchange_cb_t cb,
+                                                void *cb_context)
+{
+        struct nci_dev *ndev = nfc_get_drvdata(nfc_dev);
+        int rc;
+
+        nfc_dbg("entry, target_idx %d, len %d", target_idx, skb->len);
+
+        if (!ndev->target_active_prot) {
+                nfc_err("unable to exchange data, no active target");
+                return -EINVAL;
+        }
+
+        if (test_and_set_bit(NCI_DATA_EXCHANGE, &ndev->flags))
+                return -EBUSY;
+
+        /* store cb and context to be used on receiving data */
+        ndev->data_exchange_cb = cb;
+        ndev->data_exchange_cb_context = cb_context;
+
+        rc = nci_send_data(ndev, ndev->conn_id, skb);
+        if (rc)
+                clear_bit(NCI_DATA_EXCHANGE, &ndev->flags);
+
+        return rc;
+}
+
+static struct nfc_ops nci_nfc_ops = {
+        .dev_up = nci_dev_up,
+        .dev_down = nci_dev_down,
+        .start_poll = nci_start_poll,
+        .stop_poll = nci_stop_poll,
+        .activate_target = nci_activate_target,
+        .deactivate_target = nci_deactivate_target,
+        .data_exchange = nci_data_exchange,
+};
+
+/* ---- Interface to NCI drivers ---- */
+
+/**
+ * nci_allocate_device - allocate a new nci device
+ *
+ * @ops: device operations
+ * @supported_protocols: NFC protocols supported by the device
+ */
+struct nci_dev *nci_allocate_device(struct nci_ops *ops,
+                                        __u32 supported_protocols,
+                                        int tx_headroom,
+                                        int tx_tailroom)
+{
+        struct nci_dev *ndev;
+
+        nfc_dbg("entry, supported_protocols 0x%x", supported_protocols);
+
+        if (!ops->open || !ops->close || !ops->send)
+                return NULL;
+
+        if (!supported_protocols)
+                return NULL;
+
+        ndev = kzalloc(sizeof(struct nci_dev), GFP_KERNEL);
+        if (!ndev)
+                return NULL;
+
+        ndev->ops = ops;
+        ndev->tx_headroom = tx_headroom;
+        ndev->tx_tailroom = tx_tailroom;
+
+        ndev->nfc_dev = nfc_allocate_device(&nci_nfc_ops,
+                                                supported_protocols,
+                                                tx_headroom + NCI_DATA_HDR_SIZE,
+                                                tx_tailroom);
+        if (!ndev->nfc_dev)
+                goto free_exit;
+
+        nfc_set_drvdata(ndev->nfc_dev, ndev);
+
+        return ndev;
+
+free_exit:
+        kfree(ndev);
+        return NULL;
+}
+EXPORT_SYMBOL(nci_allocate_device);
+
+/**
+ * nci_free_device - deallocate nci device
+ *
+ * @ndev: The nci device to deallocate
+ */
+void nci_free_device(struct nci_dev *ndev)
+{
+        nfc_dbg("entry");
+
+        nfc_free_device(ndev->nfc_dev);
+        kfree(ndev);
+}
+EXPORT_SYMBOL(nci_free_device);
+
+/**
+ * nci_register_device - register a nci device in the nfc subsystem
+ *
+ * @dev: The nci device to register
+ */
+int nci_register_device(struct nci_dev *ndev)
+{
+        int rc;
+        struct device *dev = &ndev->nfc_dev->dev;
+        char name[32];
+
+        nfc_dbg("entry");
+
+        rc = nfc_register_device(ndev->nfc_dev);
+        if (rc)
+                goto exit;
+
+        ndev->flags = 0;
+
+        INIT_WORK(&ndev->cmd_work, nci_cmd_work);
+        snprintf(name, sizeof(name), "%s_nci_cmd_wq", dev_name(dev));
+        ndev->cmd_wq = create_singlethread_workqueue(name);
+        if (!ndev->cmd_wq) {
+                rc = -ENOMEM;
+                goto unreg_exit;
+        }
+
+        INIT_WORK(&ndev->rx_work, nci_rx_work);
+        snprintf(name, sizeof(name), "%s_nci_rx_wq", dev_name(dev));
+        ndev->rx_wq = create_singlethread_workqueue(name);
+        if (!ndev->rx_wq) {
+                rc = -ENOMEM;
+                goto destroy_cmd_wq_exit;
+        }
+
+        INIT_WORK(&ndev->tx_work, nci_tx_work);
+        snprintf(name, sizeof(name), "%s_nci_tx_wq", dev_name(dev));
+        ndev->tx_wq = create_singlethread_workqueue(name);
+        if (!ndev->tx_wq) {
+                rc = -ENOMEM;
+                goto destroy_rx_wq_exit;
+        }
+
+        skb_queue_head_init(&ndev->cmd_q);
+        skb_queue_head_init(&ndev->rx_q);
+        skb_queue_head_init(&ndev->tx_q);
+
+        setup_timer(&ndev->cmd_timer, nci_cmd_timer,
+                        (unsigned long) ndev);
+
+        mutex_init(&ndev->req_lock);
+
+        goto exit;
+
+destroy_rx_wq_exit:
+        destroy_workqueue(ndev->rx_wq);
+
+destroy_cmd_wq_exit:
+        destroy_workqueue(ndev->cmd_wq);
+
+unreg_exit:
+        nfc_unregister_device(ndev->nfc_dev);
+
+exit:
+        return rc;
+}
+EXPORT_SYMBOL(nci_register_device);
+
+/**
+ * nci_unregister_device - unregister a nci device in the nfc subsystem
+ *
+ * @dev: The nci device to unregister
+ */
+void nci_unregister_device(struct nci_dev *ndev)
+{
+        nfc_dbg("entry");
+
+        nci_close_device(ndev);
+
+        destroy_workqueue(ndev->cmd_wq);
+        destroy_workqueue(ndev->rx_wq);
+        destroy_workqueue(ndev->tx_wq);
+
+        nfc_unregister_device(ndev->nfc_dev);
+}
+EXPORT_SYMBOL(nci_unregister_device);
+
+/**
+ * nci_recv_frame - receive frame from NCI drivers
+ *
+ * @skb: The sk_buff to receive
+ */
+int nci_recv_frame(struct sk_buff *skb)
+{
+        struct nci_dev *ndev = (struct nci_dev *) skb->dev;
+
+        nfc_dbg("entry, len %d", skb->len);
+
+        if (!ndev || (!test_bit(NCI_UP, &ndev->flags)
+                && !test_bit(NCI_INIT, &ndev->flags))) {
+                kfree_skb(skb);
+                return -ENXIO;
+        }
+
+        /* Queue frame for rx worker thread */
+        skb_queue_tail(&ndev->rx_q, skb);
+        queue_work(ndev->rx_wq, &ndev->rx_work);
+
+        return 0;
+}
+EXPORT_SYMBOL(nci_recv_frame);
+
+static int nci_send_frame(struct sk_buff *skb)
+{
+        struct nci_dev *ndev = (struct nci_dev *) skb->dev;
+
+        nfc_dbg("entry, len %d", skb->len);
+
+        if (!ndev) {
+                kfree_skb(skb);
+                return -ENODEV;
+        }
+
+        /* Get rid of skb owner, prior to sending to the driver. */
+        skb_orphan(skb);
+
+        return ndev->ops->send(skb);
+}
+
+/* Send NCI command */
+int nci_send_cmd(struct nci_dev *ndev, __u16 opcode, __u8 plen, void *payload)
+{
+        struct nci_ctrl_hdr *hdr;
+        struct sk_buff *skb;
+
+        nfc_dbg("entry, opcode 0x%x, plen %d", opcode, plen);
+
+        skb = nci_skb_alloc(ndev, (NCI_CTRL_HDR_SIZE + plen), GFP_KERNEL);
+        if (!skb) {
+                nfc_err("no memory for command");
+                return -ENOMEM;
+        }
+
+        hdr = (struct nci_ctrl_hdr *) skb_put(skb, NCI_CTRL_HDR_SIZE);
+        hdr->gid = nci_opcode_gid(opcode);
+        hdr->oid = nci_opcode_oid(opcode);
+        hdr->plen = plen;
+
+        nci_mt_set((__u8 *)hdr, NCI_MT_CMD_PKT);
+        nci_pbf_set((__u8 *)hdr, NCI_PBF_LAST);
+
+        if (plen)
+                memcpy(skb_put(skb, plen), payload, plen);
+
+        skb->dev = (void *) ndev;
+
+        skb_queue_tail(&ndev->cmd_q, skb);
+        queue_work(ndev->cmd_wq, &ndev->cmd_work);
+
+        return 0;
+}
+
+/* ---- NCI TX Data worker thread ---- */
+
+static void nci_tx_work(struct work_struct *work)
+{
+        struct nci_dev *ndev = container_of(work, struct nci_dev, tx_work);
+        struct sk_buff *skb;
+
+        nfc_dbg("entry, credits_cnt %d", atomic_read(&ndev->credits_cnt));
+
+        /* Send queued tx data */
+        while (atomic_read(&ndev->credits_cnt)) {
+                skb = skb_dequeue(&ndev->tx_q);
+                if (!skb)
+                        return;
+
+                atomic_dec(&ndev->credits_cnt);
+
+                nfc_dbg("NCI TX: MT=data, PBF=%d, conn_id=%d, plen=%d",
+                                nci_pbf(skb->data),
+                                nci_conn_id(skb->data),
+                                nci_plen(skb->data));
+
+                nci_send_frame(skb);
+        }
+}
+
+/* ----- NCI RX worker thread (data & control) ----- */
+
+static void nci_rx_work(struct work_struct *work)
+{
+        struct nci_dev *ndev = container_of(work, struct nci_dev, rx_work);
+        struct sk_buff *skb;
+
+        while ((skb = skb_dequeue(&ndev->rx_q))) {
+                /* Process frame */
+                switch (nci_mt(skb->data)) {
+                case NCI_MT_RSP_PKT:
+                        nci_rsp_packet(ndev, skb);
+                        break;
+
+                case NCI_MT_NTF_PKT:
+                        nci_ntf_packet(ndev, skb);
+                        break;
+
+                case NCI_MT_DATA_PKT:
+                        nci_rx_data_packet(ndev, skb);
+                        break;
+
+                default:
+                        nfc_err("unknown MT 0x%x", nci_mt(skb->data));
+                        kfree_skb(skb);
+                        break;
+                }
+        }
+}
+
+/* ----- NCI TX CMD worker thread ----- */
+
+static void nci_cmd_work(struct work_struct *work)
+{
+        struct nci_dev *ndev = container_of(work, struct nci_dev, cmd_work);
+        struct sk_buff *skb;
+
+        nfc_dbg("entry, cmd_cnt %d", atomic_read(&ndev->cmd_cnt));
+
+        /* Send queued command */
+        if (atomic_read(&ndev->cmd_cnt)) {
+                skb = skb_dequeue(&ndev->cmd_q);
+                if (!skb)
+                        return;
+
+                atomic_dec(&ndev->cmd_cnt);
+
+                nfc_dbg("NCI TX: MT=cmd, PBF=%d, GID=0x%x, OID=0x%x, plen=%d",
+                                nci_pbf(skb->data),
+                                nci_opcode_gid(nci_opcode(skb->data)),
+                                nci_opcode_oid(nci_opcode(skb->data)),
+                                nci_plen(skb->data));
+
+                nci_send_frame(skb);
+
+                mod_timer(&ndev->cmd_timer,
+                        jiffies + msecs_to_jiffies(NCI_CMD_TIMEOUT));
+        }
+}
diff --git a/net/nfc/nci/data.c b/net/nfc/nci/data.c
new file mode 100644
index 000000000000..e5ed90fc1a9c
--- /dev/null
+++ b/net/nfc/nci/data.c
@@ -0,0 +1,247 @@
+/*
+ *  The NFC Controller Interface is the communication protocol between an
+ *  NFC Controller (NFCC) and a Device Host (DH).
+ *
+ *  Copyright (C) 2011 Texas Instruments, Inc.
+ *
+ *  Written by Ilan Elias <ilane@ti.com>
+ *
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License version 2
+ *  as published by the Free Software Foundation
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program; if not, write to the Free Software
+ *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ *
+ */
+
+#include <linux/types.h>
+#include <linux/interrupt.h>
+#include <linux/wait.h>
+#include <linux/bitops.h>
+#include <linux/skbuff.h>
+
+#include "../nfc.h"
+#include <net/nfc/nci.h>
+#include <net/nfc/nci_core.h>
+#include <linux/nfc.h>
+
+/* Complete data exchange transaction and forward skb to nfc core */
+void nci_data_exchange_complete(struct nci_dev *ndev,
+                                struct sk_buff *skb,
+                                int err)
+{
+        data_exchange_cb_t cb = ndev->data_exchange_cb;
+        void *cb_context = ndev->data_exchange_cb_context;
+
+        nfc_dbg("entry, len %d, err %d", ((skb) ? (skb->len) : (0)), err);
+
+        if (cb) {
+                ndev->data_exchange_cb = NULL;
+                ndev->data_exchange_cb_context = 0;
+
+                /* forward skb to nfc core */
+                cb(cb_context, skb, err);
+        } else if (skb) {
+                nfc_err("no rx callback, dropping rx data...");
+
+                /* no waiting callback, free skb */
+                kfree_skb(skb);
+        }
+
+        clear_bit(NCI_DATA_EXCHANGE, &ndev->flags);
+}
+
+/* ----------------- NCI TX Data ----------------- */
+
+static inline void nci_push_data_hdr(struct nci_dev *ndev,
+                                        __u8 conn_id,
+                                        struct sk_buff *skb,
+                                        __u8 pbf)
+{
+        struct nci_data_hdr *hdr;
+        int plen = skb->len;
+
+        hdr = (struct nci_data_hdr *) skb_push(skb, NCI_DATA_HDR_SIZE);
+        hdr->conn_id = conn_id;
+        hdr->rfu = 0;
+        hdr->plen = plen;
+
+        nci_mt_set((__u8 *)hdr, NCI_MT_DATA_PKT);
+        nci_pbf_set((__u8 *)hdr, pbf);
+
+        skb->dev = (void *) ndev;
+}
+
+static int nci_queue_tx_data_frags(struct nci_dev *ndev,
+                                        __u8 conn_id,
+                                        struct sk_buff *skb) {
+        int total_len = skb->len;
+        unsigned char *data = skb->data;
+        unsigned long flags;
+        struct sk_buff_head frags_q;
+        struct sk_buff *skb_frag;
+        int frag_len;
+        int rc = 0;
+
+        nfc_dbg("entry, conn_id 0x%x, total_len %d", conn_id, total_len);
+
+        __skb_queue_head_init(&frags_q);
+
+        while (total_len) {
+                frag_len = min_t(int, total_len, ndev->max_pkt_payload_size);
+
+                skb_frag = nci_skb_alloc(ndev,
+                                        (NCI_DATA_HDR_SIZE + frag_len),
+                                        GFP_KERNEL);
+                if (skb_frag == NULL) {
+                        rc = -ENOMEM;
+                        goto free_exit;
+                }
+                skb_reserve(skb_frag, NCI_DATA_HDR_SIZE);
+
+                /* first, copy the data */
+                memcpy(skb_put(skb_frag, frag_len), data, frag_len);
+
+                /* second, set the header */
+                nci_push_data_hdr(ndev, conn_id, skb_frag,
+                ((total_len == frag_len) ? (NCI_PBF_LAST) : (NCI_PBF_CONT)));
+
+                __skb_queue_tail(&frags_q, skb_frag);
+
+                data += frag_len;
+                total_len -= frag_len;
+
+                nfc_dbg("frag_len %d, remaining total_len %d",
+                        frag_len, total_len);
+        }
+
+        /* queue all fragments atomically */
+        spin_lock_irqsave(&ndev->tx_q.lock, flags);
+
+        while ((skb_frag = __skb_dequeue(&frags_q)) != NULL)
+                __skb_queue_tail(&ndev->tx_q, skb_frag);
+
+        spin_unlock_irqrestore(&ndev->tx_q.lock, flags);
+
+        /* free the original skb */
+        kfree_skb(skb);
+
+        goto exit;
+
+free_exit:
+        while ((skb_frag = __skb_dequeue(&frags_q)) != NULL)
+                kfree_skb(skb_frag);
+
+exit:
+        return rc;
+}
+
+/* Send NCI data */
+int nci_send_data(struct nci_dev *ndev, __u8 conn_id, struct sk_buff *skb)
+{
+        int rc = 0;
+
+        nfc_dbg("entry, conn_id 0x%x, plen %d", conn_id, skb->len);
+
+        /* check if the packet need to be fragmented */
+        if (skb->len <= ndev->max_pkt_payload_size) {
+                /* no need to fragment packet */
+                nci_push_data_hdr(ndev, conn_id, skb, NCI_PBF_LAST);
+
+                skb_queue_tail(&ndev->tx_q, skb);
+        } else {
+                /* fragment packet and queue the fragments */
+                rc = nci_queue_tx_data_frags(ndev, conn_id, skb);
+                if (rc) {
+                        nfc_err("failed to fragment tx data packet");
+                        goto free_exit;
+                }
+        }
+
+        queue_work(ndev->tx_wq, &ndev->tx_work);
+
+        goto exit;
+
+free_exit:
+        kfree_skb(skb);
+
+exit:
+        return rc;
+}
+
+/* ----------------- NCI RX Data ----------------- */
+
+static void nci_add_rx_data_frag(struct nci_dev *ndev,
+                                struct sk_buff *skb,
+                                __u8 pbf)
+{
+        int reassembly_len;
+        int err = 0;
+
+        if (ndev->rx_data_reassembly) {
+                reassembly_len = ndev->rx_data_reassembly->len;
+
+                /* first, make enough room for the already accumulated data */
+                if (skb_cow_head(skb, reassembly_len)) {
+                        nfc_err("error adding room for accumulated rx data");
+
+                        kfree_skb(skb);
+                        skb = 0;
+
+                        kfree_skb(ndev->rx_data_reassembly);
+                        ndev->rx_data_reassembly = 0;
+
+                        err = -ENOMEM;
+                        goto exit;
+                }
+
+                /* second, combine the two fragments */
+                memcpy(skb_push(skb, reassembly_len),
+                                ndev->rx_data_reassembly->data,
+                                reassembly_len);
+
+                /* third, free old reassembly */
+                kfree_skb(ndev->rx_data_reassembly);
+                ndev->rx_data_reassembly = 0;
+        }
+
+        if (pbf == NCI_PBF_CONT) {
+                /* need to wait for next fragment, store skb and exit */
+                ndev->rx_data_reassembly = skb;
+                return;
+        }
+
+exit:
+        nci_data_exchange_complete(ndev, skb, err);
+}
+
+/* Rx Data packet */
+void nci_rx_data_packet(struct nci_dev *ndev, struct sk_buff *skb)
+{
+        __u8 pbf = nci_pbf(skb->data);
+
+        nfc_dbg("entry, len %d", skb->len);
+
+        nfc_dbg("NCI RX: MT=data, PBF=%d, conn_id=%d, plen=%d",
+                        nci_pbf(skb->data),
+                        nci_conn_id(skb->data),
+                        nci_plen(skb->data));
+
+        /* strip the nci data header */
+        skb_pull(skb, NCI_DATA_HDR_SIZE);
+
+        if (ndev->target_active_prot == NFC_PROTO_MIFARE) {
+                /* frame I/F => remove the status byte */
+                nfc_dbg("NFC_PROTO_MIFARE => remove the status byte");
+                skb_trim(skb, (skb->len - 1));
+        }
+
+        nci_add_rx_data_frag(ndev, skb, pbf);
+}
diff --git a/net/nfc/nci/lib.c b/net/nfc/nci/lib.c
new file mode 100644
index 000000000000..b19dc2fa90e1
--- /dev/null
+++ b/net/nfc/nci/lib.c
@@ -0,0 +1,94 @@
+/*
+ *  The NFC Controller Interface is the communication protocol between an
+ *  NFC Controller (NFCC) and a Device Host (DH).
+ *
+ *  Copyright (C) 2011 Texas Instruments, Inc.
+ *
+ *  Written by Ilan Elias <ilane@ti.com>
+ *
+ *  Acknowledgements:
+ *  This file is based on lib.c, which was written
+ *  by Maxim Krasnyansky.
+ *
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License version 2
+ *  as published by the Free Software Foundation
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program; if not, write to the Free Software
+ *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ *
+ */
+
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/types.h>
+#include <linux/errno.h>
+
+#include <net/nfc/nci.h>
+
+/* NCI status codes to Unix errno mapping */
+int nci_to_errno(__u8 code)
+{
+        switch (code) {
+        case NCI_STATUS_OK:
+                return 0;
+
+        case NCI_STATUS_REJECTED:
+                return -EBUSY;
+
+        case NCI_STATUS_MESSAGE_CORRUPTED:
+                return -EBADMSG;
+
+        case NCI_STATUS_BUFFER_FULL:
+                return -ENOBUFS;
+
+        case NCI_STATUS_NOT_INITIALIZED:
+                return -EHOSTDOWN;
+
+        case NCI_STATUS_SYNTAX_ERROR:
+        case NCI_STATUS_SEMANTIC_ERROR:
+        case NCI_STATUS_INVALID_PARAM:
+        case NCI_STATUS_RF_PROTOCOL_ERROR:
+        case NCI_STATUS_NFCEE_PROTOCOL_ERROR:
+                return -EPROTO;
+
+        case NCI_STATUS_UNKNOWN_GID:
+        case NCI_STATUS_UNKNOWN_OID:
+                return -EBADRQC;
+
+        case NCI_STATUS_MESSAGE_SIZE_EXCEEDED:
+                return -EMSGSIZE;
+
+        case NCI_STATUS_DISCOVERY_ALREADY_STARTED:
+                return -EALREADY;
+
+        case NCI_STATUS_DISCOVERY_TARGET_ACTIVATION_FAILED:
+        case NCI_STATUS_NFCEE_INTERFACE_ACTIVATION_FAILED:
+                return -ECONNREFUSED;
+
+        case NCI_STATUS_RF_TRANSMISSION_ERROR:
+        case NCI_STATUS_NFCEE_TRANSMISSION_ERROR:
+                return -ECOMM;
+
+        case NCI_STATUS_RF_TIMEOUT_ERROR:
+        case NCI_STATUS_NFCEE_TIMEOUT_ERROR:
+                return -ETIMEDOUT;
+
+        case NCI_STATUS_RF_LINK_LOSS_ERROR:
+                return -ENOLINK;
+
+        case NCI_STATUS_MAX_ACTIVE_NFCEE_INTERFACES_REACHED:
+                return -EDQUOT;
+
+        case NCI_STATUS_FAILED:
+        default:
+                return -ENOSYS;
+        }
+}
+EXPORT_SYMBOL(nci_to_errno);
diff --git a/net/nfc/nci/ntf.c b/net/nfc/nci/ntf.c
new file mode 100644
index 000000000000..96633f5cda4f
--- /dev/null
+++ b/net/nfc/nci/ntf.c
@@ -0,0 +1,258 @@
+/*
+ *  The NFC Controller Interface is the communication protocol between an
+ *  NFC Controller (NFCC) and a Device Host (DH).
+ *
+ *  Copyright (C) 2011 Texas Instruments, Inc.
+ *
+ *  Written by Ilan Elias <ilane@ti.com>
+ *
+ *  Acknowledgements:
+ *  This file is based on hci_event.c, which was written
+ *  by Maxim Krasnyansky.
+ *
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License version 2
+ *  as published by the Free Software Foundation
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program; if not, write to the Free Software
+ *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ *
+ */
+
+#include <linux/types.h>
+#include <linux/interrupt.h>
+#include <linux/bitops.h>
+#include <linux/skbuff.h>
+
+#include "../nfc.h"
+#include <net/nfc/nci.h>
+#include <net/nfc/nci_core.h>
+#include <linux/nfc.h>
+
+/* Handle NCI Notification packets */
+
+static void nci_core_conn_credits_ntf_packet(struct nci_dev *ndev,
+                                                struct sk_buff *skb)
+{
+        struct nci_core_conn_credit_ntf *ntf = (void *) skb->data;
+        int i;
+
+        nfc_dbg("entry, num_entries %d", ntf->num_entries);
+
+        if (ntf->num_entries > NCI_MAX_NUM_CONN)
+                ntf->num_entries = NCI_MAX_NUM_CONN;
+
+        /* update the credits */
+        for (i = 0; i < ntf->num_entries; i++) {
+                nfc_dbg("entry[%d]: conn_id %d, credits %d", i,
+                        ntf->conn_entries[i].conn_id,
+                        ntf->conn_entries[i].credits);
+
+                if (ntf->conn_entries[i].conn_id == ndev->conn_id) {
+                        /* found static rf connection */
+                        atomic_add(ntf->conn_entries[i].credits,
+                                &ndev->credits_cnt);
+                }
+        }
+
+        /* trigger the next tx */
+        if (!skb_queue_empty(&ndev->tx_q))
+                queue_work(ndev->tx_wq, &ndev->tx_work);
+}
+
+static void nci_rf_field_info_ntf_packet(struct nci_dev *ndev,
+                                        struct sk_buff *skb)
+{
+        struct nci_rf_field_info_ntf *ntf = (void *) skb->data;
+
+        nfc_dbg("entry, rf_field_status %d", ntf->rf_field_status);
+}
+
+static int nci_rf_activate_nfca_passive_poll(struct nci_dev *ndev,
+                        struct nci_rf_activate_ntf *ntf, __u8 *data)
+{
+        struct rf_tech_specific_params_nfca_poll *nfca_poll;
+        struct activation_params_nfca_poll_iso_dep *nfca_poll_iso_dep;
+
+        nfca_poll = &ntf->rf_tech_specific_params.nfca_poll;
+        nfca_poll_iso_dep = &ntf->activation_params.nfca_poll_iso_dep;
+
+        nfca_poll->sens_res = __le16_to_cpu(*((__u16 *)data));
+        data += 2;
+
+        nfca_poll->nfcid1_len = *data++;
+
+        nfc_dbg("sens_res 0x%x, nfcid1_len %d",
+                nfca_poll->sens_res,
+                nfca_poll->nfcid1_len);
+
+        memcpy(nfca_poll->nfcid1, data, nfca_poll->nfcid1_len);
+        data += nfca_poll->nfcid1_len;
+
+        nfca_poll->sel_res_len = *data++;
+
+        if (nfca_poll->sel_res_len != 0)
+                nfca_poll->sel_res = *data++;
+
+        ntf->rf_interface_type = *data++;
+        ntf->activation_params_len = *data++;
+
+        nfc_dbg("sel_res_len %d, sel_res 0x%x, rf_interface_type %d, activation_params_len %d",
+                nfca_poll->sel_res_len,
+                nfca_poll->sel_res,
+                ntf->rf_interface_type,
+                ntf->activation_params_len);
+
+        switch (ntf->rf_interface_type) {
+        case NCI_RF_INTERFACE_ISO_DEP:
+                nfca_poll_iso_dep->rats_res_len = *data++;
+                if (nfca_poll_iso_dep->rats_res_len > 0) {
+                        memcpy(nfca_poll_iso_dep->rats_res,
+                                data,
+                                nfca_poll_iso_dep->rats_res_len);
+                }
+                break;
+
+        case NCI_RF_INTERFACE_FRAME:
+                /* no activation params */
+                break;
+
+        default:
+                nfc_err("unsupported rf_interface_type 0x%x",
+                        ntf->rf_interface_type);
+                return -EPROTO;
+        }
+
+        return 0;
+}
+
+static void nci_target_found(struct nci_dev *ndev,
+                                struct nci_rf_activate_ntf *ntf)
+{
+        struct nfc_target nfc_tgt;
+
+        if (ntf->rf_protocol == NCI_RF_PROTOCOL_T2T)    /* T2T MifareUL */
+                nfc_tgt.supported_protocols = NFC_PROTO_MIFARE_MASK;
+        else if (ntf->rf_protocol == NCI_RF_PROTOCOL_ISO_DEP)   /* 4A */
+                nfc_tgt.supported_protocols = NFC_PROTO_ISO14443_MASK;
+
+        nfc_tgt.sens_res = ntf->rf_tech_specific_params.nfca_poll.sens_res;
+        nfc_tgt.sel_res = ntf->rf_tech_specific_params.nfca_poll.sel_res;
+
+        if (!(nfc_tgt.supported_protocols & ndev->poll_prots)) {
+                nfc_dbg("the target found does not have the desired protocol");
+                return;
+        }
+
+        nfc_dbg("new target found,  supported_protocols 0x%x",
+                nfc_tgt.supported_protocols);
+
+        ndev->target_available_prots = nfc_tgt.supported_protocols;
+
+        nfc_targets_found(ndev->nfc_dev, &nfc_tgt, 1);
+}
+
+static void nci_rf_activate_ntf_packet(struct nci_dev *ndev,
+                                        struct sk_buff *skb)
+{
+        struct nci_rf_activate_ntf ntf;
+        __u8 *data = skb->data;
+        int rc = -1;
+
+        clear_bit(NCI_DISCOVERY, &ndev->flags);
+        set_bit(NCI_POLL_ACTIVE, &ndev->flags);
+
+        ntf.target_handle = *data++;
+        ntf.rf_protocol = *data++;
+        ntf.rf_tech_and_mode = *data++;
+        ntf.rf_tech_specific_params_len = *data++;
+
+        nfc_dbg("target_handle %d, rf_protocol 0x%x, rf_tech_and_mode 0x%x, rf_tech_specific_params_len %d",
+                ntf.target_handle,
+                ntf.rf_protocol,
+                ntf.rf_tech_and_mode,
+                ntf.rf_tech_specific_params_len);
+
+        switch (ntf.rf_tech_and_mode) {
+        case NCI_NFC_A_PASSIVE_POLL_MODE:
+                rc = nci_rf_activate_nfca_passive_poll(ndev, &ntf,
+                        data);
+                break;
+
+        default:
+                nfc_err("unsupported rf_tech_and_mode 0x%x",
+                        ntf.rf_tech_and_mode);
+                return;
+        }
+
+        if (!rc)
+                nci_target_found(ndev, &ntf);
+}
+
+static void nci_rf_deactivate_ntf_packet(struct nci_dev *ndev,
+                                        struct sk_buff *skb)
+{
+        __u8 type = skb->data[0];
+
+        nfc_dbg("entry, type 0x%x", type);
+
+        clear_bit(NCI_POLL_ACTIVE, &ndev->flags);
+        ndev->target_active_prot = 0;
+
+        /* drop tx data queue */
+        skb_queue_purge(&ndev->tx_q);
+
+        /* drop partial rx data packet */
+        if (ndev->rx_data_reassembly) {
+                kfree_skb(ndev->rx_data_reassembly);
+                ndev->rx_data_reassembly = 0;
+        }
+
+        /* complete the data exchange transaction, if exists */
+        if (test_bit(NCI_DATA_EXCHANGE, &ndev->flags))
+                nci_data_exchange_complete(ndev, NULL, -EIO);
+}
+
+void nci_ntf_packet(struct nci_dev *ndev, struct sk_buff *skb)
+{
+        __u16 ntf_opcode = nci_opcode(skb->data);
+
+        nfc_dbg("NCI RX: MT=ntf, PBF=%d, GID=0x%x, OID=0x%x, plen=%d",
+                        nci_pbf(skb->data),
+                        nci_opcode_gid(ntf_opcode),
+                        nci_opcode_oid(ntf_opcode),
+                        nci_plen(skb->data));
+
+        /* strip the nci control header */
+        skb_pull(skb, NCI_CTRL_HDR_SIZE);
+
+        switch (ntf_opcode) {
+        case NCI_OP_CORE_CONN_CREDITS_NTF:
+                nci_core_conn_credits_ntf_packet(ndev, skb);
+                break;
+
+        case NCI_OP_RF_FIELD_INFO_NTF:
+                nci_rf_field_info_ntf_packet(ndev, skb);
+                break;
+
+        case NCI_OP_RF_ACTIVATE_NTF:
+                nci_rf_activate_ntf_packet(ndev, skb);
+                break;
+
+        case NCI_OP_RF_DEACTIVATE_NTF:
+                nci_rf_deactivate_ntf_packet(ndev, skb);
+                break;
+
+        default:
+                nfc_err("unknown ntf opcode 0x%x", ntf_opcode);
+                break;
+        }
+
+        kfree_skb(skb);
+}
diff --git a/net/nfc/nci/rsp.c b/net/nfc/nci/rsp.c
new file mode 100644
index 000000000000..0403d4cd0917
--- /dev/null
+++ b/net/nfc/nci/rsp.c
@@ -0,0 +1,226 @@
+/*
+ *  The NFC Controller Interface is the communication protocol between an
+ *  NFC Controller (NFCC) and a Device Host (DH).
+ *
+ *  Copyright (C) 2011 Texas Instruments, Inc.
+ *
+ *  Written by Ilan Elias <ilane@ti.com>
+ *
+ *  Acknowledgements:
+ *  This file is based on hci_event.c, which was written
+ *  by Maxim Krasnyansky.
+ *
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License version 2
+ *  as published by the Free Software Foundation
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program; if not, write to the Free Software
+ *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ *
+ */
+
+#include <linux/types.h>
+#include <linux/interrupt.h>
+#include <linux/bitops.h>
+#include <linux/skbuff.h>
+
+#include "../nfc.h"
+#include <net/nfc/nci.h>
+#include <net/nfc/nci_core.h>
+
+/* Handle NCI Response packets */
+
+static void nci_core_reset_rsp_packet(struct nci_dev *ndev, struct sk_buff *skb)
+{
+        struct nci_core_reset_rsp *rsp = (void *) skb->data;
+
+        nfc_dbg("entry, status 0x%x", rsp->status);
+
+        if (rsp->status == NCI_STATUS_OK)
+                ndev->nci_ver = rsp->nci_ver;
+
+        nfc_dbg("nci_ver 0x%x", ndev->nci_ver);
+
+        nci_req_complete(ndev, rsp->status);
+}
+
+static void nci_core_init_rsp_packet(struct nci_dev *ndev, struct sk_buff *skb)
+{
+        struct nci_core_init_rsp_1 *rsp_1 = (void *) skb->data;
+        struct nci_core_init_rsp_2 *rsp_2;
+
+        nfc_dbg("entry, status 0x%x", rsp_1->status);
+
+        if (rsp_1->status != NCI_STATUS_OK)
+                return;
+
+        ndev->nfcc_features = __le32_to_cpu(rsp_1->nfcc_features);
+        ndev->num_supported_rf_interfaces = rsp_1->num_supported_rf_interfaces;
+
+        if (ndev->num_supported_rf_interfaces >
+                NCI_MAX_SUPPORTED_RF_INTERFACES) {
+                ndev->num_supported_rf_interfaces =
+                        NCI_MAX_SUPPORTED_RF_INTERFACES;
+        }
+
+        memcpy(ndev->supported_rf_interfaces,
+                rsp_1->supported_rf_interfaces,
+                ndev->num_supported_rf_interfaces);
+
+        rsp_2 = (void *) (skb->data + 6 + ndev->num_supported_rf_interfaces);
+
+        ndev->max_logical_connections =
+                rsp_2->max_logical_connections;
+        ndev->max_routing_table_size =
+                __le16_to_cpu(rsp_2->max_routing_table_size);
+        ndev->max_control_packet_payload_length =
+                rsp_2->max_control_packet_payload_length;
+        ndev->rf_sending_buffer_size =
+                __le16_to_cpu(rsp_2->rf_sending_buffer_size);
+        ndev->rf_receiving_buffer_size =
+                __le16_to_cpu(rsp_2->rf_receiving_buffer_size);
+        ndev->manufacturer_id =
+                __le16_to_cpu(rsp_2->manufacturer_id);
+
+        nfc_dbg("nfcc_features 0x%x",
+                ndev->nfcc_features);
+        nfc_dbg("num_supported_rf_interfaces %d",
+                ndev->num_supported_rf_interfaces);
+        nfc_dbg("supported_rf_interfaces[0] 0x%x",
+                ndev->supported_rf_interfaces[0]);
+        nfc_dbg("supported_rf_interfaces[1] 0x%x",
+                ndev->supported_rf_interfaces[1]);
+        nfc_dbg("supported_rf_interfaces[2] 0x%x",
+                ndev->supported_rf_interfaces[2]);
+        nfc_dbg("supported_rf_interfaces[3] 0x%x",
+                ndev->supported_rf_interfaces[3]);
+        nfc_dbg("max_logical_connections %d",
+                ndev->max_logical_connections);
+        nfc_dbg("max_routing_table_size %d",
+                ndev->max_routing_table_size);
+        nfc_dbg("max_control_packet_payload_length %d",
+                ndev->max_control_packet_payload_length);
+        nfc_dbg("rf_sending_buffer_size %d",
+                ndev->rf_sending_buffer_size);
+        nfc_dbg("rf_receiving_buffer_size %d",
+                ndev->rf_receiving_buffer_size);
+        nfc_dbg("manufacturer_id 0x%x",
+                ndev->manufacturer_id);
+
+        nci_req_complete(ndev, rsp_1->status);
+}
+
+static void nci_core_conn_create_rsp_packet(struct nci_dev *ndev,
+                                                struct sk_buff *skb)
+{
+        struct nci_core_conn_create_rsp *rsp = (void *) skb->data;
+
+        nfc_dbg("entry, status 0x%x", rsp->status);
+
+        if (rsp->status != NCI_STATUS_OK)
+                return;
+
+        ndev->max_pkt_payload_size = rsp->max_pkt_payload_size;
+        ndev->initial_num_credits = rsp->initial_num_credits;
+        ndev->conn_id = rsp->conn_id;
+
+        atomic_set(&ndev->credits_cnt, ndev->initial_num_credits);
+
+        nfc_dbg("max_pkt_payload_size %d", ndev->max_pkt_payload_size);
+        nfc_dbg("initial_num_credits %d", ndev->initial_num_credits);
+        nfc_dbg("conn_id %d", ndev->conn_id);
+}
+
+static void nci_rf_disc_map_rsp_packet(struct nci_dev *ndev,
+                                        struct sk_buff *skb)
+{
+        __u8 status = skb->data[0];
+
+        nfc_dbg("entry, status 0x%x", status);
+
+        nci_req_complete(ndev, status);
+}
+
+static void nci_rf_disc_rsp_packet(struct nci_dev *ndev, struct sk_buff *skb)
+{
+        __u8 status = skb->data[0];
+
+        nfc_dbg("entry, status 0x%x", status);
+
+        if (status == NCI_STATUS_OK)
+                set_bit(NCI_DISCOVERY, &ndev->flags);
+
+        nci_req_complete(ndev, status);
+}
+
+static void nci_rf_deactivate_rsp_packet(struct nci_dev *ndev,
+                                        struct sk_buff *skb)
+{
+        __u8 status = skb->data[0];
+
+        nfc_dbg("entry, status 0x%x", status);
+
+        clear_bit(NCI_DISCOVERY, &ndev->flags);
+
+        nci_req_complete(ndev, status);
+}
+
+void nci_rsp_packet(struct nci_dev *ndev, struct sk_buff *skb)
+{
+        __u16 rsp_opcode = nci_opcode(skb->data);
+
+        /* we got a rsp, stop the cmd timer */
+        del_timer(&ndev->cmd_timer);
+
+        nfc_dbg("NCI RX: MT=rsp, PBF=%d, GID=0x%x, OID=0x%x, plen=%d",
+                        nci_pbf(skb->data),
+                        nci_opcode_gid(rsp_opcode),
+                        nci_opcode_oid(rsp_opcode),
+                        nci_plen(skb->data));
+
+        /* strip the nci control header */
+        skb_pull(skb, NCI_CTRL_HDR_SIZE);
+
+        switch (rsp_opcode) {
+        case NCI_OP_CORE_RESET_RSP:
+                nci_core_reset_rsp_packet(ndev, skb);
+                break;
+
+        case NCI_OP_CORE_INIT_RSP:
+                nci_core_init_rsp_packet(ndev, skb);
+                break;
+
+        case NCI_OP_CORE_CONN_CREATE_RSP:
+                nci_core_conn_create_rsp_packet(ndev, skb);
+                break;
+
+        case NCI_OP_RF_DISCOVER_MAP_RSP:
+                nci_rf_disc_map_rsp_packet(ndev, skb);
+                break;
+
+        case NCI_OP_RF_DISCOVER_RSP:
+                nci_rf_disc_rsp_packet(ndev, skb);
+                break;
+
+        case NCI_OP_RF_DEACTIVATE_RSP:
+                nci_rf_deactivate_rsp_packet(ndev, skb);
+                break;
+
+        default:
+                nfc_err("unknown rsp opcode 0x%x", rsp_opcode);
+                break;
+        }
+
+        kfree_skb(skb);
+
+        /* trigger the next cmd */
+        atomic_set(&ndev->cmd_cnt, 1);
+        if (!skb_queue_empty(&ndev->cmd_q))
+                queue_work(ndev->cmd_wq, &ndev->cmd_work);
+}
diff --git a/net/nfc/netlink.c b/net/nfc/netlink.c
index ccdff7953f7d..03f8818e1f16 100644
--- a/net/nfc/netlink.c
+++ b/net/nfc/netlink.c
@@ -367,6 +367,52 @@ out_putdev:
         return rc;
 }
 
+static int nfc_genl_dev_up(struct sk_buff *skb, struct genl_info *info)
+{
+        struct nfc_dev *dev;
+        int rc;
+        u32 idx;
+
+        nfc_dbg("entry");
+
+        if (!info->attrs[NFC_ATTR_DEVICE_INDEX])
+                return -EINVAL;
+
+        idx = nla_get_u32(info->attrs[NFC_ATTR_DEVICE_INDEX]);
+
+        dev = nfc_get_device(idx);
+        if (!dev)
+                return -ENODEV;
+
+        rc = nfc_dev_up(dev);
+
+        nfc_put_device(dev);
+        return rc;
+}
+
+static int nfc_genl_dev_down(struct sk_buff *skb, struct genl_info *info)
+{
+        struct nfc_dev *dev;
+        int rc;
+        u32 idx;
+
+        nfc_dbg("entry");
+
+        if (!info->attrs[NFC_ATTR_DEVICE_INDEX])
+                return -EINVAL;
+
+        idx = nla_get_u32(info->attrs[NFC_ATTR_DEVICE_INDEX]);
+
+        dev = nfc_get_device(idx);
+        if (!dev)
+                return -ENODEV;
+
+        rc = nfc_dev_down(dev);
+
+        nfc_put_device(dev);
+        return rc;
+}
+
 static int nfc_genl_start_poll(struct sk_buff *skb, struct genl_info *info)
 {
         struct nfc_dev *dev;
@@ -441,6 +487,16 @@ static struct genl_ops nfc_genl_ops[] = {
                 .policy = nfc_genl_policy,
         },
         {
+                .cmd = NFC_CMD_DEV_UP,
+                .doit = nfc_genl_dev_up,
+                .policy = nfc_genl_policy,
+        },
+        {
+                .cmd = NFC_CMD_DEV_DOWN,
+                .doit = nfc_genl_dev_down,
+                .policy = nfc_genl_policy,
+        },
+        {
                 .cmd = NFC_CMD_START_POLL,
                 .doit = nfc_genl_start_poll,
                 .policy = nfc_genl_policy,
diff --git a/net/nfc/nfc.h b/net/nfc/nfc.h
index aaf9832298f3..d86583f4831d 100644
--- a/net/nfc/nfc.h
+++ b/net/nfc/nfc.h
@@ -24,10 +24,10 @@
 #ifndef __LOCAL_NFC_H
 #define __LOCAL_NFC_H
 
-#include <net/nfc.h>
+#include <net/nfc/nfc.h>
 #include <net/sock.h>
 
-__attribute__((format (printf, 2, 3)))
+__printf(2, 3)
 int nfc_printk(const char *level, const char *fmt, ...);
 
 #define nfc_info(fmt, arg...) nfc_printk(KERN_INFO, fmt, ##arg)
@@ -101,6 +101,10 @@ static inline void nfc_device_iter_exit(struct class_dev_iter *iter)
         class_dev_iter_exit(iter);
 }
 
+int nfc_dev_up(struct nfc_dev *dev);
+
+int nfc_dev_down(struct nfc_dev *dev);
+
 int nfc_start_poll(struct nfc_dev *dev, u32 protocols);
 
 int nfc_stop_poll(struct nfc_dev *dev);
diff --git a/net/nfc/rawsock.c b/net/nfc/rawsock.c
index 52de84a55115..ee7b2b365ef2 100644
--- a/net/nfc/rawsock.c
+++ b/net/nfc/rawsock.c
@@ -23,6 +23,7 @@
 
 #include <net/tcp_states.h>
 #include <linux/nfc.h>
+#include <linux/export.h>
 
 #include "nfc.h"
 
@@ -123,11 +124,7 @@ error:
 
 static int rawsock_add_header(struct sk_buff *skb)
 {
-
-        if (skb_cow_head(skb, 1))
-                return -ENOMEM;
-
-        *skb_push(skb, 1) = 0;
+        *skb_push(skb, NFC_HEADER_SIZE) = 0;
 
         return 0;
 }
@@ -197,6 +194,7 @@ static int rawsock_sendmsg(struct kiocb *iocb, struct socket *sock,
                                         struct msghdr *msg, size_t len)
 {
         struct sock *sk = sock->sk;
+        struct nfc_dev *dev = nfc_rawsock(sk)->dev;
         struct sk_buff *skb;
         int rc;
 
@@ -208,11 +206,13 @@ static int rawsock_sendmsg(struct kiocb *iocb, struct socket *sock,
         if (sock->state != SS_CONNECTED)
                 return -ENOTCONN;
 
-        skb = sock_alloc_send_skb(sk, len, msg->msg_flags & MSG_DONTWAIT,
-                                                                        &rc);
+        skb = sock_alloc_send_skb(sk, len + dev->tx_headroom + dev->tx_tailroom + NFC_HEADER_SIZE,
+                                        msg->msg_flags & MSG_DONTWAIT, &rc);
         if (!skb)
                 return rc;
 
+        skb_reserve(skb, dev->tx_headroom + NFC_HEADER_SIZE);
+
         rc = memcpy_fromiovec(skb_put(skb, len), msg->msg_iov, len);
         if (rc < 0) {
                 kfree_skb(skb);
diff --git a/net/packet/af_packet.c b/net/packet/af_packet.c
index fabb4fafa281..82a6f34d39d0 100644
--- a/net/packet/af_packet.c
+++ b/net/packet/af_packet.c
@@ -40,6 +40,10 @@
  *                                      byte arrays at the end of sockaddr_ll
  *                                      and packet_mreq.
  *              Johann Baudy    :       Added TX RING.
+ *              Chetan Loke     :       Implemented TPACKET_V3 block abstraction
+ *                                      layer.
+ *                                      Copyright (C) 2011, <lokec@ccs.neu.edu>
+ *
  *
  *              This program is free software; you can redistribute it and/or
  *              modify it under the terms of the GNU General Public License
@@ -161,9 +165,56 @@ struct packet_mreq_max {
         unsigned char   mr_address[MAX_ADDR_LEN];
 };
 
-static int packet_set_ring(struct sock *sk, struct tpacket_req *req,
+static int packet_set_ring(struct sock *sk, union tpacket_req_u *req_u,
                 int closing, int tx_ring);
 
+
+#define V3_ALIGNMENT    (8)
+
+#define BLK_HDR_LEN     (ALIGN(sizeof(struct tpacket_block_desc), V3_ALIGNMENT))
+
+#define BLK_PLUS_PRIV(sz_of_priv) \
+        (BLK_HDR_LEN + ALIGN((sz_of_priv), V3_ALIGNMENT))
+
+/* kbdq - kernel block descriptor queue */
+struct tpacket_kbdq_core {
+        struct pgv      *pkbdq;
+        unsigned int    feature_req_word;
+        unsigned int    hdrlen;
+        unsigned char   reset_pending_on_curr_blk;
+        unsigned char   delete_blk_timer;
+        unsigned short  kactive_blk_num;
+        unsigned short  blk_sizeof_priv;
+
+        /* last_kactive_blk_num:
+         * trick to see if user-space has caught up
+         * in order to avoid refreshing timer when every single pkt arrives.
+         */
+        unsigned short  last_kactive_blk_num;
+
+        char            *pkblk_start;
+        char            *pkblk_end;
+        int             kblk_size;
+        unsigned int    knum_blocks;
+        uint64_t        knxt_seq_num;
+        char            *prev;
+        char            *nxt_offset;
+        struct sk_buff  *skb;
+
+        atomic_t        blk_fill_in_prog;
+
+        /* Default is set to 8ms */
+#define DEFAULT_PRB_RETIRE_TOV  (8)
+
+        unsigned short  retire_blk_tov;
+        unsigned short  version;
+        unsigned long   tov_in_jiffies;
+
+        /* timer to retire an outstanding block */
+        struct timer_list retire_blk_timer;
+};
+
+#define PGV_FROM_VMALLOC 1
 struct pgv {
         char *buffer;
 };
@@ -179,12 +230,44 @@ struct packet_ring_buffer {
         unsigned int            pg_vec_pages;
         unsigned int            pg_vec_len;
 
+        struct tpacket_kbdq_core        prb_bdqc;
         atomic_t                pending;
 };
 
+#define BLOCK_STATUS(x) ((x)->hdr.bh1.block_status)
+#define BLOCK_NUM_PKTS(x)       ((x)->hdr.bh1.num_pkts)
+#define BLOCK_O2FP(x)           ((x)->hdr.bh1.offset_to_first_pkt)
+#define BLOCK_LEN(x)            ((x)->hdr.bh1.blk_len)
+#define BLOCK_SNUM(x)           ((x)->hdr.bh1.seq_num)
+#define BLOCK_O2PRIV(x) ((x)->offset_to_priv)
+#define BLOCK_PRIV(x)           ((void *)((char *)(x) + BLOCK_O2PRIV(x)))
+
 struct packet_sock;
 static int tpacket_snd(struct packet_sock *po, struct msghdr *msg);
 
+static void *packet_previous_frame(struct packet_sock *po,
+                struct packet_ring_buffer *rb,
+                int status);
+static void packet_increment_head(struct packet_ring_buffer *buff);
+static int prb_curr_blk_in_use(struct tpacket_kbdq_core *,
+                        struct tpacket_block_desc *);
+static void *prb_dispatch_next_block(struct tpacket_kbdq_core *,
+                        struct packet_sock *);
+static void prb_retire_current_block(struct tpacket_kbdq_core *,
+                struct packet_sock *, unsigned int status);
+static int prb_queue_frozen(struct tpacket_kbdq_core *);
+static void prb_open_block(struct tpacket_kbdq_core *,
+                struct tpacket_block_desc *);
+static void prb_retire_rx_blk_timer_expired(unsigned long);
+static void _prb_refresh_rx_retire_blk_timer(struct tpacket_kbdq_core *);
+static void prb_init_blk_timer(struct packet_sock *,
+                struct tpacket_kbdq_core *,
+                void (*func) (unsigned long));
+static void prb_fill_rxhash(struct tpacket_kbdq_core *, struct tpacket3_hdr *);
+static void prb_clear_rxhash(struct tpacket_kbdq_core *,
+                struct tpacket3_hdr *);
+static void prb_fill_vlan_info(struct tpacket_kbdq_core *,
+                struct tpacket3_hdr *);
 static void packet_flush_mclist(struct sock *sk);
 
 struct packet_fanout;
@@ -193,6 +276,7 @@ struct packet_sock {
         struct sock             sk;
         struct packet_fanout    *fanout;
         struct tpacket_stats    stats;
+        union  tpacket_stats_u  stats_u;
         struct packet_ring_buffer       rx_ring;
         struct packet_ring_buffer       tx_ring;
         int                     copy_thresh;
@@ -242,7 +326,16 @@ struct packet_skb_cb {
 
 #define PACKET_SKB_CB(__skb)    ((struct packet_skb_cb *)((__skb)->cb))
 
-static inline struct packet_sock *pkt_sk(struct sock *sk)
+#define GET_PBDQC_FROM_RB(x)    ((struct tpacket_kbdq_core *)(&(x)->prb_bdqc))
+#define GET_PBLOCK_DESC(x, bid) \
+        ((struct tpacket_block_desc *)((x)->pkbdq[(bid)].buffer))
+#define GET_CURR_PBLOCK_DESC_FROM_CORE(x)       \
+        ((struct tpacket_block_desc *)((x)->pkbdq[(x)->kactive_blk_num].buffer))
+#define GET_NEXT_PRB_BLK_NUM(x) \
+        (((x)->kactive_blk_num < ((x)->knum_blocks-1)) ? \
+        ((x)->kactive_blk_num+1) : 0)
+
+static struct packet_sock *pkt_sk(struct sock *sk)
 {
         return (struct packet_sock *)sk;
 }
@@ -325,8 +418,9 @@ static void __packet_set_status(struct packet_sock *po, void *frame, int status)
                 h.h2->tp_status = status;
                 flush_dcache_page(pgv_to_page(&h.h2->tp_status));
                 break;
+        case TPACKET_V3:
         default:
-                pr_err("TPACKET version not supported\n");
+                WARN(1, "TPACKET version not supported.\n");
                 BUG();
         }
 
@@ -351,8 +445,9 @@ static int __packet_get_status(struct packet_sock *po, void *frame)
         case TPACKET_V2:
                 flush_dcache_page(pgv_to_page(&h.h2->tp_status));
                 return h.h2->tp_status;
+        case TPACKET_V3:
         default:
-                pr_err("TPACKET version not supported\n");
+                WARN(1, "TPACKET version not supported.\n");
                 BUG();
                 return 0;
         }
@@ -382,14 +477,678 @@ static void *packet_lookup_frame(struct packet_sock *po,
         return h.raw;
 }
 
-static inline void *packet_current_frame(struct packet_sock *po,
+static void *packet_current_frame(struct packet_sock *po,
                 struct packet_ring_buffer *rb,
                 int status)
 {
         return packet_lookup_frame(po, rb, rb->head, status);
 }
 
-static inline void *packet_previous_frame(struct packet_sock *po,
+static void prb_del_retire_blk_timer(struct tpacket_kbdq_core *pkc)
+{
+        del_timer_sync(&pkc->retire_blk_timer);
+}
+
+static void prb_shutdown_retire_blk_timer(struct packet_sock *po,
+                int tx_ring,
+                struct sk_buff_head *rb_queue)
+{
+        struct tpacket_kbdq_core *pkc;
+
+        pkc = tx_ring ? &po->tx_ring.prb_bdqc : &po->rx_ring.prb_bdqc;
+
+        spin_lock(&rb_queue->lock);
+        pkc->delete_blk_timer = 1;
+        spin_unlock(&rb_queue->lock);
+
+        prb_del_retire_blk_timer(pkc);
+}
+
+static void prb_init_blk_timer(struct packet_sock *po,
+                struct tpacket_kbdq_core *pkc,
+                void (*func) (unsigned long))
+{
+        init_timer(&pkc->retire_blk_timer);
+        pkc->retire_blk_timer.data = (long)po;
+        pkc->retire_blk_timer.function = func;
+        pkc->retire_blk_timer.expires = jiffies;
+}
+
+static void prb_setup_retire_blk_timer(struct packet_sock *po, int tx_ring)
+{
+        struct tpacket_kbdq_core *pkc;
+
+        if (tx_ring)
+                BUG();
+
+        pkc = tx_ring ? &po->tx_ring.prb_bdqc : &po->rx_ring.prb_bdqc;
+        prb_init_blk_timer(po, pkc, prb_retire_rx_blk_timer_expired);
+}
+
+static int prb_calc_retire_blk_tmo(struct packet_sock *po,
+                                int blk_size_in_bytes)
+{
+        struct net_device *dev;
+        unsigned int mbits = 0, msec = 0, div = 0, tmo = 0;
+        struct ethtool_cmd ecmd;
+        int err;
+
+        rtnl_lock();
+        dev = __dev_get_by_index(sock_net(&po->sk), po->ifindex);
+        if (unlikely(!dev)) {
+                rtnl_unlock();
+                return DEFAULT_PRB_RETIRE_TOV;
+        }
+        err = __ethtool_get_settings(dev, &ecmd);
+        rtnl_unlock();
+        if (!err) {
+                switch (ecmd.speed) {
+                case SPEED_10000:
+                        msec = 1;
+                        div = 10000/1000;
+                        break;
+                case SPEED_1000:
+                        msec = 1;
+                        div = 1000/1000;
+                        break;
+                /*
+                 * If the link speed is so slow you don't really
+                 * need to worry about perf anyways
+                 */
+                case SPEED_100:
+                case SPEED_10:
+                default:
+                        return DEFAULT_PRB_RETIRE_TOV;
+                }
+        }
+
+        mbits = (blk_size_in_bytes * 8) / (1024 * 1024);
+
+        if (div)
+                mbits /= div;
+
+        tmo = mbits * msec;
+
+        if (div)
+                return tmo+1;
+        return tmo;
+}
+
+static void prb_init_ft_ops(struct tpacket_kbdq_core *p1,
+                        union tpacket_req_u *req_u)
+{
+        p1->feature_req_word = req_u->req3.tp_feature_req_word;
+}
+
+static void init_prb_bdqc(struct packet_sock *po,
+                        struct packet_ring_buffer *rb,
+                        struct pgv *pg_vec,
+                        union tpacket_req_u *req_u, int tx_ring)
+{
+        struct tpacket_kbdq_core *p1 = &rb->prb_bdqc;
+        struct tpacket_block_desc *pbd;
+
+        memset(p1, 0x0, sizeof(*p1));
+
+        p1->knxt_seq_num = 1;
+        p1->pkbdq = pg_vec;
+        pbd = (struct tpacket_block_desc *)pg_vec[0].buffer;
+        p1->pkblk_start = (char *)pg_vec[0].buffer;
+        p1->kblk_size = req_u->req3.tp_block_size;
+        p1->knum_blocks = req_u->req3.tp_block_nr;
+        p1->hdrlen = po->tp_hdrlen;
+        p1->version = po->tp_version;
+        p1->last_kactive_blk_num = 0;
+        po->stats_u.stats3.tp_freeze_q_cnt = 0;
+        if (req_u->req3.tp_retire_blk_tov)
+                p1->retire_blk_tov = req_u->req3.tp_retire_blk_tov;
+        else
+                p1->retire_blk_tov = prb_calc_retire_blk_tmo(po,
+                                                req_u->req3.tp_block_size);
+        p1->tov_in_jiffies = msecs_to_jiffies(p1->retire_blk_tov);
+        p1->blk_sizeof_priv = req_u->req3.tp_sizeof_priv;
+
+        prb_init_ft_ops(p1, req_u);
+        prb_setup_retire_blk_timer(po, tx_ring);
+        prb_open_block(p1, pbd);
+}
+
+/*  Do NOT update the last_blk_num first.
+ *  Assumes sk_buff_head lock is held.
+ */
+static void _prb_refresh_rx_retire_blk_timer(struct tpacket_kbdq_core *pkc)
+{
+        mod_timer(&pkc->retire_blk_timer,
+                        jiffies + pkc->tov_in_jiffies);
+        pkc->last_kactive_blk_num = pkc->kactive_blk_num;
+}
+
+/*
+ * Timer logic:
+ * 1) We refresh the timer only when we open a block.
+ *    By doing this we don't waste cycles refreshing the timer
+ *        on packet-by-packet basis.
+ *
+ * With a 1MB block-size, on a 1Gbps line, it will take
+ * i) ~8 ms to fill a block + ii) memcpy etc.
+ * In this cut we are not accounting for the memcpy time.
+ *
+ * So, if the user sets the 'tmo' to 10ms then the timer
+ * will never fire while the block is still getting filled
+ * (which is what we want). However, the user could choose
+ * to close a block early and that's fine.
+ *
+ * But when the timer does fire, we check whether or not to refresh it.
+ * Since the tmo granularity is in msecs, it is not too expensive
+ * to refresh the timer, lets say every '8' msecs.
+ * Either the user can set the 'tmo' or we can derive it based on
+ * a) line-speed and b) block-size.
+ * prb_calc_retire_blk_tmo() calculates the tmo.
+ *
+ */
+static void prb_retire_rx_blk_timer_expired(unsigned long data)
+{
+        struct packet_sock *po = (struct packet_sock *)data;
+        struct tpacket_kbdq_core *pkc = &po->rx_ring.prb_bdqc;
+        unsigned int frozen;
+        struct tpacket_block_desc *pbd;
+
+        spin_lock(&po->sk.sk_receive_queue.lock);
+
+        frozen = prb_queue_frozen(pkc);
+        pbd = GET_CURR_PBLOCK_DESC_FROM_CORE(pkc);
+
+        if (unlikely(pkc->delete_blk_timer))
+                goto out;
+
+        /* We only need to plug the race when the block is partially filled.
+         * tpacket_rcv:
+         *              lock(); increment BLOCK_NUM_PKTS; unlock()
+         *              copy_bits() is in progress ...
+         *              timer fires on other cpu:
+         *              we can't retire the current block because copy_bits
+         *              is in progress.
+         *
+         */
+        if (BLOCK_NUM_PKTS(pbd)) {
+                while (atomic_read(&pkc->blk_fill_in_prog)) {
+                        /* Waiting for skb_copy_bits to finish... */
+                        cpu_relax();
+                }
+        }
+
+        if (pkc->last_kactive_blk_num == pkc->kactive_blk_num) {
+                if (!frozen) {
+                        prb_retire_current_block(pkc, po, TP_STATUS_BLK_TMO);
+                        if (!prb_dispatch_next_block(pkc, po))
+                                goto refresh_timer;
+                        else
+                                goto out;
+                } else {
+                        /* Case 1. Queue was frozen because user-space was
+                         *         lagging behind.
+                         */
+                        if (prb_curr_blk_in_use(pkc, pbd)) {
+                                /*
+                                 * Ok, user-space is still behind.
+                                 * So just refresh the timer.
+                                 */
+                                goto refresh_timer;
+                        } else {
+                               /* Case 2. queue was frozen,user-space caught up,
+                                * now the link went idle && the timer fired.
+                                * We don't have a block to close.So we open this
+                                * block and restart the timer.
+                                * opening a block thaws the queue,restarts timer
+                                * Thawing/timer-refresh is a side effect.
+                                */
+                                prb_open_block(pkc, pbd);
+                                goto out;
+                        }
+                }
+        }
+
+refresh_timer:
+        _prb_refresh_rx_retire_blk_timer(pkc);
+
+out:
+        spin_unlock(&po->sk.sk_receive_queue.lock);
+}
+
+static void prb_flush_block(struct tpacket_kbdq_core *pkc1,
+                struct tpacket_block_desc *pbd1, __u32 status)
+{
+        /* Flush everything minus the block header */
+
+#if ARCH_IMPLEMENTS_FLUSH_DCACHE_PAGE == 1
+        u8 *start, *end;
+
+        start = (u8 *)pbd1;
+
+        /* Skip the block header(we know header WILL fit in 4K) */
+        start += PAGE_SIZE;
+
+        end = (u8 *)PAGE_ALIGN((unsigned long)pkc1->pkblk_end);
+        for (; start < end; start += PAGE_SIZE)
+                flush_dcache_page(pgv_to_page(start));
+
+        smp_wmb();
+#endif
+
+        /* Now update the block status. */
+
+        BLOCK_STATUS(pbd1) = status;
+
+        /* Flush the block header */
+
+#if ARCH_IMPLEMENTS_FLUSH_DCACHE_PAGE == 1
+        start = (u8 *)pbd1;
+        flush_dcache_page(pgv_to_page(start));
+
+        smp_wmb();
+#endif
+}
+
+/*
+ * Side effect:
+ *
+ * 1) flush the block
+ * 2) Increment active_blk_num
+ *
+ * Note:We DONT refresh the timer on purpose.
+ *      Because almost always the next block will be opened.
+ */
+static void prb_close_block(struct tpacket_kbdq_core *pkc1,
+                struct tpacket_block_desc *pbd1,
+                struct packet_sock *po, unsigned int stat)
+{
+        __u32 status = TP_STATUS_USER | stat;
+
+        struct tpacket3_hdr *last_pkt;
+        struct tpacket_hdr_v1 *h1 = &pbd1->hdr.bh1;
+
+        if (po->stats.tp_drops)
+                status |= TP_STATUS_LOSING;
+
+        last_pkt = (struct tpacket3_hdr *)pkc1->prev;
+        last_pkt->tp_next_offset = 0;
+
+        /* Get the ts of the last pkt */
+        if (BLOCK_NUM_PKTS(pbd1)) {
+                h1->ts_last_pkt.ts_sec = last_pkt->tp_sec;
+                h1->ts_last_pkt.ts_nsec = last_pkt->tp_nsec;
+        } else {
+                /* Ok, we tmo'd - so get the current time */
+                struct timespec ts;
+                getnstimeofday(&ts);
+                h1->ts_last_pkt.ts_sec = ts.tv_sec;
+                h1->ts_last_pkt.ts_nsec = ts.tv_nsec;
+        }
+
+        smp_wmb();
+
+        /* Flush the block */
+        prb_flush_block(pkc1, pbd1, status);
+
+        pkc1->kactive_blk_num = GET_NEXT_PRB_BLK_NUM(pkc1);
+}
+
+static void prb_thaw_queue(struct tpacket_kbdq_core *pkc)
+{
+        pkc->reset_pending_on_curr_blk = 0;
+}
+
+/*
+ * Side effect of opening a block:
+ *
+ * 1) prb_queue is thawed.
+ * 2) retire_blk_timer is refreshed.
+ *
+ */
+static void prb_open_block(struct tpacket_kbdq_core *pkc1,
+        struct tpacket_block_desc *pbd1)
+{
+        struct timespec ts;
+        struct tpacket_hdr_v1 *h1 = &pbd1->hdr.bh1;
+
+        smp_rmb();
+
+        if (likely(TP_STATUS_KERNEL == BLOCK_STATUS(pbd1))) {
+
+                /* We could have just memset this but we will lose the
+                 * flexibility of making the priv area sticky
+                 */
+                BLOCK_SNUM(pbd1) = pkc1->knxt_seq_num++;
+                BLOCK_NUM_PKTS(pbd1) = 0;
+                BLOCK_LEN(pbd1) = BLK_PLUS_PRIV(pkc1->blk_sizeof_priv);
+                getnstimeofday(&ts);
+                h1->ts_first_pkt.ts_sec = ts.tv_sec;
+                h1->ts_first_pkt.ts_nsec = ts.tv_nsec;
+                pkc1->pkblk_start = (char *)pbd1;
+                pkc1->nxt_offset = (char *)(pkc1->pkblk_start +
+                BLK_PLUS_PRIV(pkc1->blk_sizeof_priv));
+                BLOCK_O2FP(pbd1) = (__u32)BLK_PLUS_PRIV(pkc1->blk_sizeof_priv);
+                BLOCK_O2PRIV(pbd1) = BLK_HDR_LEN;
+                pbd1->version = pkc1->version;
+                pkc1->prev = pkc1->nxt_offset;
+                pkc1->pkblk_end = pkc1->pkblk_start + pkc1->kblk_size;
+                prb_thaw_queue(pkc1);
+                _prb_refresh_rx_retire_blk_timer(pkc1);
+
+                smp_wmb();
+
+                return;
+        }
+
+        WARN(1, "ERROR block:%p is NOT FREE status:%d kactive_blk_num:%d\n",
+                pbd1, BLOCK_STATUS(pbd1), pkc1->kactive_blk_num);
+        dump_stack();
+        BUG();
+}
+
+/*
+ * Queue freeze logic:
+ * 1) Assume tp_block_nr = 8 blocks.
+ * 2) At time 't0', user opens Rx ring.
+ * 3) Some time past 't0', kernel starts filling blocks starting from 0 .. 7
+ * 4) user-space is either sleeping or processing block '0'.
+ * 5) tpacket_rcv is currently filling block '7', since there is no space left,
+ *    it will close block-7,loop around and try to fill block '0'.
+ *    call-flow:
+ *    __packet_lookup_frame_in_block
+ *      prb_retire_current_block()
+ *      prb_dispatch_next_block()
+ *        |->(BLOCK_STATUS == USER) evaluates to true
+ *    5.1) Since block-0 is currently in-use, we just freeze the queue.
+ * 6) Now there are two cases:
+ *    6.1) Link goes idle right after the queue is frozen.
+ *         But remember, the last open_block() refreshed the timer.
+ *         When this timer expires,it will refresh itself so that we can
+ *         re-open block-0 in near future.
+ *    6.2) Link is busy and keeps on receiving packets. This is a simple
+ *         case and __packet_lookup_frame_in_block will check if block-0
+ *         is free and can now be re-used.
+ */
+static void prb_freeze_queue(struct tpacket_kbdq_core *pkc,
+                                  struct packet_sock *po)
+{
+        pkc->reset_pending_on_curr_blk = 1;
+        po->stats_u.stats3.tp_freeze_q_cnt++;
+}
+
+#define TOTAL_PKT_LEN_INCL_ALIGN(length) (ALIGN((length), V3_ALIGNMENT))
+
+/*
+ * If the next block is free then we will dispatch it
+ * and return a good offset.
+ * Else, we will freeze the queue.
+ * So, caller must check the return value.
+ */
+static void *prb_dispatch_next_block(struct tpacket_kbdq_core *pkc,
+                struct packet_sock *po)
+{
+        struct tpacket_block_desc *pbd;
+
+        smp_rmb();
+
+        /* 1. Get current block num */
+        pbd = GET_CURR_PBLOCK_DESC_FROM_CORE(pkc);
+
+        /* 2. If this block is currently in_use then freeze the queue */
+        if (TP_STATUS_USER & BLOCK_STATUS(pbd)) {
+                prb_freeze_queue(pkc, po);
+                return NULL;
+        }
+
+        /*
+         * 3.
+         * open this block and return the offset where the first packet
+         * needs to get stored.
+         */
+        prb_open_block(pkc, pbd);
+        return (void *)pkc->nxt_offset;
+}
+
+static void prb_retire_current_block(struct tpacket_kbdq_core *pkc,
+                struct packet_sock *po, unsigned int status)
+{
+        struct tpacket_block_desc *pbd = GET_CURR_PBLOCK_DESC_FROM_CORE(pkc);
+
+        /* retire/close the current block */
+        if (likely(TP_STATUS_KERNEL == BLOCK_STATUS(pbd))) {
+                /*
+                 * Plug the case where copy_bits() is in progress on
+                 * cpu-0 and tpacket_rcv() got invoked on cpu-1, didn't
+                 * have space to copy the pkt in the current block and
+                 * called prb_retire_current_block()
+                 *
+                 * We don't need to worry about the TMO case because
+                 * the timer-handler already handled this case.
+                 */
+                if (!(status & TP_STATUS_BLK_TMO)) {
+                        while (atomic_read(&pkc->blk_fill_in_prog)) {
+                                /* Waiting for skb_copy_bits to finish... */
+                                cpu_relax();
+                        }
+                }
+                prb_close_block(pkc, pbd, po, status);
+                return;
+        }
+
+        WARN(1, "ERROR-pbd[%d]:%p\n", pkc->kactive_blk_num, pbd);
+        dump_stack();
+        BUG();
+}
+
+static int prb_curr_blk_in_use(struct tpacket_kbdq_core *pkc,
+                                      struct tpacket_block_desc *pbd)
+{
+        return TP_STATUS_USER & BLOCK_STATUS(pbd);
+}
+
+static int prb_queue_frozen(struct tpacket_kbdq_core *pkc)
+{
+        return pkc->reset_pending_on_curr_blk;
+}
+
+static void prb_clear_blk_fill_status(struct packet_ring_buffer *rb)
+{
+        struct tpacket_kbdq_core *pkc  = GET_PBDQC_FROM_RB(rb);
+        atomic_dec(&pkc->blk_fill_in_prog);
+}
+
+static void prb_fill_rxhash(struct tpacket_kbdq_core *pkc,
+                        struct tpacket3_hdr *ppd)
+{
+        ppd->hv1.tp_rxhash = skb_get_rxhash(pkc->skb);
+}
+
+static void prb_clear_rxhash(struct tpacket_kbdq_core *pkc,
+                        struct tpacket3_hdr *ppd)
+{
+        ppd->hv1.tp_rxhash = 0;
+}
+
+static void prb_fill_vlan_info(struct tpacket_kbdq_core *pkc,
+                        struct tpacket3_hdr *ppd)
+{
+        if (vlan_tx_tag_present(pkc->skb)) {
+                ppd->hv1.tp_vlan_tci = vlan_tx_tag_get(pkc->skb);
+                ppd->tp_status = TP_STATUS_VLAN_VALID;
+        } else {
+                ppd->hv1.tp_vlan_tci = ppd->tp_status = 0;
+        }
+}
+
+static void prb_run_all_ft_ops(struct tpacket_kbdq_core *pkc,
+                        struct tpacket3_hdr *ppd)
+{
+        prb_fill_vlan_info(pkc, ppd);
+
+        if (pkc->feature_req_word & TP_FT_REQ_FILL_RXHASH)
+                prb_fill_rxhash(pkc, ppd);
+        else
+                prb_clear_rxhash(pkc, ppd);
+}
+
+static void prb_fill_curr_block(char *curr,
+                                struct tpacket_kbdq_core *pkc,
+                                struct tpacket_block_desc *pbd,
+                                unsigned int len)
+{
+        struct tpacket3_hdr *ppd;
+
+        ppd  = (struct tpacket3_hdr *)curr;
+        ppd->tp_next_offset = TOTAL_PKT_LEN_INCL_ALIGN(len);
+        pkc->prev = curr;
+        pkc->nxt_offset += TOTAL_PKT_LEN_INCL_ALIGN(len);
+        BLOCK_LEN(pbd) += TOTAL_PKT_LEN_INCL_ALIGN(len);
+        BLOCK_NUM_PKTS(pbd) += 1;
+        atomic_inc(&pkc->blk_fill_in_prog);
+        prb_run_all_ft_ops(pkc, ppd);
+}
+
+/* Assumes caller has the sk->rx_queue.lock */
+static void *__packet_lookup_frame_in_block(struct packet_sock *po,
+                                            struct sk_buff *skb,
+                                                int status,
+                                            unsigned int len
+                                            )
+{
+        struct tpacket_kbdq_core *pkc;
+        struct tpacket_block_desc *pbd;
+        char *curr, *end;
+
+        pkc = GET_PBDQC_FROM_RB(((struct packet_ring_buffer *)&po->rx_ring));
+        pbd = GET_CURR_PBLOCK_DESC_FROM_CORE(pkc);
+
+        /* Queue is frozen when user space is lagging behind */
+        if (prb_queue_frozen(pkc)) {
+                /*
+                 * Check if that last block which caused the queue to freeze,
+                 * is still in_use by user-space.
+                 */
+                if (prb_curr_blk_in_use(pkc, pbd)) {
+                        /* Can't record this packet */
+                        return NULL;
+                } else {
+                        /*
+                         * Ok, the block was released by user-space.
+                         * Now let's open that block.
+                         * opening a block also thaws the queue.
+                         * Thawing is a side effect.
+                         */
+                        prb_open_block(pkc, pbd);
+                }
+        }
+
+        smp_mb();
+        curr = pkc->nxt_offset;
+        pkc->skb = skb;
+        end = (char *) ((char *)pbd + pkc->kblk_size);
+
+        /* first try the current block */
+        if (curr+TOTAL_PKT_LEN_INCL_ALIGN(len) < end) {
+                prb_fill_curr_block(curr, pkc, pbd, len);
+                return (void *)curr;
+        }
+
+        /* Ok, close the current block */
+        prb_retire_current_block(pkc, po, 0);
+
+        /* Now, try to dispatch the next block */
+        curr = (char *)prb_dispatch_next_block(pkc, po);
+        if (curr) {
+                pbd = GET_CURR_PBLOCK_DESC_FROM_CORE(pkc);
+                prb_fill_curr_block(curr, pkc, pbd, len);
+                return (void *)curr;
+        }
+
+        /*
+         * No free blocks are available.user_space hasn't caught up yet.
+         * Queue was just frozen and now this packet will get dropped.
+         */
+        return NULL;
+}
+
+static void *packet_current_rx_frame(struct packet_sock *po,
+                                            struct sk_buff *skb,
+                                            int status, unsigned int len)
+{
+        char *curr = NULL;
+        switch (po->tp_version) {
+        case TPACKET_V1:
+        case TPACKET_V2:
+                curr = packet_lookup_frame(po, &po->rx_ring,
+                                        po->rx_ring.head, status);
+                return curr;
+        case TPACKET_V3:
+                return __packet_lookup_frame_in_block(po, skb, status, len);
+        default:
+                WARN(1, "TPACKET version not supported\n");
+                BUG();
+                return 0;
+        }
+}
+
+static void *prb_lookup_block(struct packet_sock *po,
+                                     struct packet_ring_buffer *rb,
+                                     unsigned int previous,
+                                     int status)
+{
+        struct tpacket_kbdq_core *pkc  = GET_PBDQC_FROM_RB(rb);
+        struct tpacket_block_desc *pbd = GET_PBLOCK_DESC(pkc, previous);
+
+        if (status != BLOCK_STATUS(pbd))
+                return NULL;
+        return pbd;
+}
+
+static int prb_previous_blk_num(struct packet_ring_buffer *rb)
+{
+        unsigned int prev;
+        if (rb->prb_bdqc.kactive_blk_num)
+                prev = rb->prb_bdqc.kactive_blk_num-1;
+        else
+                prev = rb->prb_bdqc.knum_blocks-1;
+        return prev;
+}
+
+/* Assumes caller has held the rx_queue.lock */
+static void *__prb_previous_block(struct packet_sock *po,
+                                         struct packet_ring_buffer *rb,
+                                         int status)
+{
+        unsigned int previous = prb_previous_blk_num(rb);
+        return prb_lookup_block(po, rb, previous, status);
+}
+
+static void *packet_previous_rx_frame(struct packet_sock *po,
+                                             struct packet_ring_buffer *rb,
+                                             int status)
+{
+        if (po->tp_version <= TPACKET_V2)
+                return packet_previous_frame(po, rb, status);
+
+        return __prb_previous_block(po, rb, status);
+}
+
+static void packet_increment_rx_head(struct packet_sock *po,
+                                            struct packet_ring_buffer *rb)
+{
+        switch (po->tp_version) {
+        case TPACKET_V1:
+        case TPACKET_V2:
+                return packet_increment_head(rb);
+        case TPACKET_V3:
+        default:
+                WARN(1, "TPACKET version not supported.\n");
+                BUG();
+                return;
+        }
+}
+
+static void *packet_previous_frame(struct packet_sock *po,
                 struct packet_ring_buffer *rb,
                 int status)
 {
@@ -397,7 +1156,7 @@ static inline void *packet_previous_frame(struct packet_sock *po,
         return packet_lookup_frame(po, rb, previous, status);
 }
 
-static inline void packet_increment_head(struct packet_ring_buffer *buff)
+static void packet_increment_head(struct packet_ring_buffer *buff)
 {
         buff->head = buff->head != buff->frame_max ? buff->head+1 : 0;
 }
@@ -454,43 +1213,6 @@ static struct sock *fanout_demux_cpu(struct packet_fanout *f, struct sk_buff *sk
         return f->arr[cpu % num];
 }
 
-static struct sk_buff *fanout_check_defrag(struct sk_buff *skb)
-{
-#ifdef CONFIG_INET
-        const struct iphdr *iph;
-        u32 len;
-
-        if (skb->protocol != htons(ETH_P_IP))
-                return skb;
-
-        if (!pskb_may_pull(skb, sizeof(struct iphdr)))
-                return skb;
-
-        iph = ip_hdr(skb);
-        if (iph->ihl < 5 || iph->version != 4)
-                return skb;
-        if (!pskb_may_pull(skb, iph->ihl*4))
-                return skb;
-        iph = ip_hdr(skb);
-        len = ntohs(iph->tot_len);
-        if (skb->len < len || len < (iph->ihl * 4))
-                return skb;
-
-        if (ip_is_fragment(ip_hdr(skb))) {
-                skb = skb_share_check(skb, GFP_ATOMIC);
-                if (skb) {
-                        if (pskb_trim_rcsum(skb, len))
-                                return skb;
-                        memset(IPCB(skb), 0, sizeof(struct inet_skb_parm));
-                        if (ip_defrag(skb, IP_DEFRAG_AF_PACKET))
-                                return NULL;
-                        skb->rxhash = 0;
-                }
-        }
-#endif
-        return skb;
-}
-
 static int packet_rcv_fanout(struct sk_buff *skb, struct net_device *dev,
                              struct packet_type *pt, struct net_device *orig_dev)
 {
@@ -509,7 +1231,7 @@ static int packet_rcv_fanout(struct sk_buff *skb, struct net_device *dev,
         case PACKET_FANOUT_HASH:
         default:
                 if (f->defrag) {
-                        skb = fanout_check_defrag(skb);
+                        skb = ip_check_defrag(skb, IP_DEFRAG_AF_PACKET);
                         if (!skb)
                                 return 0;
                 }
@@ -836,7 +1558,7 @@ out_free:
         return err;
 }
 
-static inline unsigned int run_filter(const struct sk_buff *skb,
+static unsigned int run_filter(const struct sk_buff *skb,
                                       const struct sock *sk,
                                       unsigned int res)
 {
@@ -985,12 +1707,13 @@ static int tpacket_rcv(struct sk_buff *skb, struct net_device *dev,
         union {
                 struct tpacket_hdr *h1;
                 struct tpacket2_hdr *h2;
+                struct tpacket3_hdr *h3;
                 void *raw;
         } h;
         u8 *skb_head = skb->data;
         int skb_len = skb->len;
         unsigned int snaplen, res;
-        unsigned long status = TP_STATUS_LOSING|TP_STATUS_USER;
+        unsigned long status = TP_STATUS_USER;
         unsigned short macoff, netoff, hdrlen;
         struct sk_buff *copy_skb = NULL;
         struct timeval tv;
@@ -1036,37 +1759,46 @@ static int tpacket_rcv(struct sk_buff *skb, struct net_device *dev,
                         po->tp_reserve;
                 macoff = netoff - maclen;
         }
-
-        if (macoff + snaplen > po->rx_ring.frame_size) {
-                if (po->copy_thresh &&
-                    atomic_read(&sk->sk_rmem_alloc) + skb->truesize <
-                    (unsigned)sk->sk_rcvbuf) {
-                        if (skb_shared(skb)) {
-                                copy_skb = skb_clone(skb, GFP_ATOMIC);
-                        } else {
-                                copy_skb = skb_get(skb);
-                                skb_head = skb->data;
+        if (po->tp_version <= TPACKET_V2) {
+                if (macoff + snaplen > po->rx_ring.frame_size) {
+                        if (po->copy_thresh &&
+                                atomic_read(&sk->sk_rmem_alloc) + skb->truesize
+                                < (unsigned)sk->sk_rcvbuf) {
+                                if (skb_shared(skb)) {
+                                        copy_skb = skb_clone(skb, GFP_ATOMIC);
+                                } else {
+                                        copy_skb = skb_get(skb);
+                                        skb_head = skb->data;
+                                }
+                                if (copy_skb)
+                                        skb_set_owner_r(copy_skb, sk);
                         }
-                        if (copy_skb)
-                                skb_set_owner_r(copy_skb, sk);
+                        snaplen = po->rx_ring.frame_size - macoff;
+                        if ((int)snaplen < 0)
+                                snaplen = 0;
                 }
-                snaplen = po->rx_ring.frame_size - macoff;
-                if ((int)snaplen < 0)
-                        snaplen = 0;
         }
-
         spin_lock(&sk->sk_receive_queue.lock);
-        h.raw = packet_current_frame(po, &po->rx_ring, TP_STATUS_KERNEL);
+        h.raw = packet_current_rx_frame(po, skb,
+                                        TP_STATUS_KERNEL, (macoff+snaplen));
         if (!h.raw)
                 goto ring_is_full;
-        packet_increment_head(&po->rx_ring);
+        if (po->tp_version <= TPACKET_V2) {
+                packet_increment_rx_head(po, &po->rx_ring);
+        /*
+         * LOSING will be reported till you read the stats,
+         * because it's COR - Clear On Read.
+         * Anyways, moving it for V1/V2 only as V3 doesn't need this
+         * at packet level.
+         */
+                if (po->stats.tp_drops)
+                        status |= TP_STATUS_LOSING;
+        }
         po->stats.tp_packets++;
         if (copy_skb) {
                 status |= TP_STATUS_COPY;
                 __skb_queue_tail(&sk->sk_receive_queue, copy_skb);
         }
-        if (!po->stats.tp_drops)
-                status &= ~TP_STATUS_LOSING;
         spin_unlock(&sk->sk_receive_queue.lock);
 
         skb_copy_bits(skb, 0, h.raw + macoff, snaplen);
@@ -1117,6 +1849,29 @@ static int tpacket_rcv(struct sk_buff *skb, struct net_device *dev,
                 h.h2->tp_padding = 0;
                 hdrlen = sizeof(*h.h2);
                 break;
+        case TPACKET_V3:
+                /* tp_nxt_offset,vlan are already populated above.
+                 * So DONT clear those fields here
+                 */
+                h.h3->tp_status |= status;
+                h.h3->tp_len = skb->len;
+                h.h3->tp_snaplen = snaplen;
+                h.h3->tp_mac = macoff;
+                h.h3->tp_net = netoff;
+                if ((po->tp_tstamp & SOF_TIMESTAMPING_SYS_HARDWARE)
+                                && shhwtstamps->syststamp.tv64)
+                        ts = ktime_to_timespec(shhwtstamps->syststamp);
+                else if ((po->tp_tstamp & SOF_TIMESTAMPING_RAW_HARDWARE)
+                                && shhwtstamps->hwtstamp.tv64)
+                        ts = ktime_to_timespec(shhwtstamps->hwtstamp);
+                else if (skb->tstamp.tv64)
+                        ts = ktime_to_timespec(skb->tstamp);
+                else
+                        getnstimeofday(&ts);
+                h.h3->tp_sec  = ts.tv_sec;
+                h.h3->tp_nsec = ts.tv_nsec;
+                hdrlen = sizeof(*h.h3);
+                break;
         default:
                 BUG();
         }
@@ -1137,13 +1892,19 @@ static int tpacket_rcv(struct sk_buff *skb, struct net_device *dev,
         {
                 u8 *start, *end;
 
-                end = (u8 *)PAGE_ALIGN((unsigned long)h.raw + macoff + snaplen);
-                for (start = h.raw; start < end; start += PAGE_SIZE)
-                        flush_dcache_page(pgv_to_page(start));
+                if (po->tp_version <= TPACKET_V2) {
+                        end = (u8 *)PAGE_ALIGN((unsigned long)h.raw
+                                + macoff + snaplen);
+                        for (start = h.raw; start < end; start += PAGE_SIZE)
+                                flush_dcache_page(pgv_to_page(start));
+                }
                 smp_wmb();
         }
 #endif
-        __packet_set_status(po, h.raw, status);
+        if (po->tp_version <= TPACKET_V2)
+                __packet_set_status(po, h.raw, status);
+        else
+                prb_clear_blk_fill_status(&po->rx_ring);
 
         sk->sk_data_ready(sk, 0);
 
@@ -1170,8 +1931,6 @@ static void tpacket_destruct_skb(struct sk_buff *skb)
         struct packet_sock *po = pkt_sk(skb->sk);
         void *ph;
 
-        BUG_ON(skb == NULL);
-
         if (likely(po->tx_ring.pg_vec)) {
                 ph = skb_shinfo(skb)->destructor_arg;
                 BUG_ON(__packet_get_status(po, ph) != TP_STATUS_SENDING);
@@ -1408,10 +2167,10 @@ out:
         return err;
 }
 
-static inline struct sk_buff *packet_alloc_skb(struct sock *sk, size_t prepad,
-                                               size_t reserve, size_t len,
-                                               size_t linear, int noblock,
-                                               int *err)
+static struct sk_buff *packet_alloc_skb(struct sock *sk, size_t prepad,
+                                        size_t reserve, size_t len,
+                                        size_t linear, int noblock,
+                                        int *err)
 {
         struct sk_buff *skb;
 
@@ -1634,7 +2393,7 @@ static int packet_release(struct socket *sock)
         struct sock *sk = sock->sk;
         struct packet_sock *po;
         struct net *net;
-        struct tpacket_req req;
+        union tpacket_req_u req_u;
 
         if (!sk)
                 return 0;
@@ -1657,13 +2416,13 @@ static int packet_release(struct socket *sock)
 
         packet_flush_mclist(sk);
 
-        memset(&req, 0, sizeof(req));
+        memset(&req_u, 0, sizeof(req_u));
 
         if (po->rx_ring.pg_vec)
-                packet_set_ring(sk, &req, 1, 0);
+                packet_set_ring(sk, &req_u, 1, 0);
 
         if (po->tx_ring.pg_vec)
-                packet_set_ring(sk, &req, 1, 1);
+                packet_set_ring(sk, &req_u, 1, 1);
 
         fanout_release(sk);
 
@@ -2283,15 +3042,27 @@ packet_setsockopt(struct socket *sock, int level, int optname, char __user *optv
         case PACKET_RX_RING:
         case PACKET_TX_RING:
         {
-                struct tpacket_req req;
+                union tpacket_req_u req_u;
+                int len;
 
-                if (optlen < sizeof(req))
+                switch (po->tp_version) {
+                case TPACKET_V1:
+                case TPACKET_V2:
+                        len = sizeof(req_u.req);
+                        break;
+                case TPACKET_V3:
+                default:
+                        len = sizeof(req_u.req3);
+                        break;
+                }
+                if (optlen < len)
                         return -EINVAL;
                 if (pkt_sk(sk)->has_vnet_hdr)
                         return -EINVAL;
-                if (copy_from_user(&req, optval, sizeof(req)))
+                if (copy_from_user(&req_u.req, optval, len))
                         return -EFAULT;
-                return packet_set_ring(sk, &req, 0, optname == PACKET_TX_RING);
+                return packet_set_ring(sk, &req_u, 0,
+                        optname == PACKET_TX_RING);
         }
         case PACKET_COPY_THRESH:
         {
@@ -2318,6 +3089,7 @@ packet_setsockopt(struct socket *sock, int level, int optname, char __user *optv
                 switch (val) {
                 case TPACKET_V1:
                 case TPACKET_V2:
+                case TPACKET_V3:
                         po->tp_version = val;
                         return 0;
                 default:
@@ -2427,6 +3199,7 @@ static int packet_getsockopt(struct socket *sock, int level, int optname,
         struct packet_sock *po = pkt_sk(sk);
         void *data;
         struct tpacket_stats st;
+        union tpacket_stats_u st_u;
 
         if (level != SOL_PACKET)
                 return -ENOPROTOOPT;
@@ -2439,15 +3212,27 @@ static int packet_getsockopt(struct socket *sock, int level, int optname,
 
         switch (optname) {
         case PACKET_STATISTICS:
-                if (len > sizeof(struct tpacket_stats))
-                        len = sizeof(struct tpacket_stats);
+                if (po->tp_version == TPACKET_V3) {
+                        len = sizeof(struct tpacket_stats_v3);
+                } else {
+                        if (len > sizeof(struct tpacket_stats))
+                                len = sizeof(struct tpacket_stats);
+                }
                 spin_lock_bh(&sk->sk_receive_queue.lock);
-                st = po->stats;
+                if (po->tp_version == TPACKET_V3) {
+                        memcpy(&st_u.stats3, &po->stats,
+                        sizeof(struct tpacket_stats));
+                        st_u.stats3.tp_freeze_q_cnt =
+                        po->stats_u.stats3.tp_freeze_q_cnt;
+                        st_u.stats3.tp_packets += po->stats.tp_drops;
+                        data = &st_u.stats3;
+                } else {
+                        st = po->stats;
+                        st.tp_packets += st.tp_drops;
+                        data = &st;
+                }
                 memset(&po->stats, 0, sizeof(st));
                 spin_unlock_bh(&sk->sk_receive_queue.lock);
-                st.tp_packets += st.tp_drops;
-
-                data = &st;
                 break;
         case PACKET_AUXDATA:
                 if (len > sizeof(int))
@@ -2488,6 +3273,9 @@ static int packet_getsockopt(struct socket *sock, int level, int optname,
                 case TPACKET_V2:
                         val = sizeof(struct tpacket2_hdr);
                         break;
+                case TPACKET_V3:
+                        val = sizeof(struct tpacket3_hdr);
+                        break;
                 default:
                         return -EINVAL;
                 }
@@ -2644,7 +3432,8 @@ static unsigned int packet_poll(struct file *file, struct socket *sock,
 
         spin_lock_bh(&sk->sk_receive_queue.lock);
         if (po->rx_ring.pg_vec) {
-                if (!packet_previous_frame(po, &po->rx_ring, TP_STATUS_KERNEL))
+                if (!packet_previous_rx_frame(po, &po->rx_ring,
+                        TP_STATUS_KERNEL))
                         mask |= POLLIN | POLLRDNORM;
         }
         spin_unlock_bh(&sk->sk_receive_queue.lock);
@@ -2705,7 +3494,7 @@ static void free_pg_vec(struct pgv *pg_vec, unsigned int order,
         kfree(pg_vec);
 }
 
-static inline char *alloc_one_pg_vec_page(unsigned long order)
+static char *alloc_one_pg_vec_page(unsigned long order)
 {
         char *buffer = NULL;
         gfp_t gfp_flags = GFP_KERNEL | __GFP_COMP |
@@ -2763,7 +3552,7 @@ out_free_pgvec:
         goto out;
 }
 
-static int packet_set_ring(struct sock *sk, struct tpacket_req *req,
+static int packet_set_ring(struct sock *sk, union tpacket_req_u *req_u,
                 int closing, int tx_ring)
 {
         struct pgv *pg_vec = NULL;
@@ -2772,7 +3561,15 @@ static int packet_set_ring(struct sock *sk, struct tpacket_req *req,
         struct packet_ring_buffer *rb;
         struct sk_buff_head *rb_queue;
         __be16 num;
-        int err;
+        int err = -EINVAL;
+        /* Added to avoid minimal code churn */
+        struct tpacket_req *req = &req_u->req;
+
+        /* Opening a Tx-ring is NOT supported in TPACKET_V3 */
+        if (!closing && tx_ring && (po->tp_version > TPACKET_V2)) {
+                WARN(1, "Tx-ring is not supported.\n");
+                goto out;
+        }
 
         rb = tx_ring ? &po->tx_ring : &po->rx_ring;
         rb_queue = tx_ring ? &sk->sk_write_queue : &sk->sk_receive_queue;
@@ -2798,6 +3595,9 @@ static int packet_set_ring(struct sock *sk, struct tpacket_req *req,
                 case TPACKET_V2:
                         po->tp_hdrlen = TPACKET2_HDRLEN;
                         break;
+                case TPACKET_V3:
+                        po->tp_hdrlen = TPACKET3_HDRLEN;
+                        break;
                 }
 
                 err = -EINVAL;
@@ -2823,6 +3623,17 @@ static int packet_set_ring(struct sock *sk, struct tpacket_req *req,
                 pg_vec = alloc_pg_vec(req, order);
                 if (unlikely(!pg_vec))
                         goto out;
+                switch (po->tp_version) {
+                case TPACKET_V3:
+                /* Transmit path is not supported. We checked
+                 * it above but just being paranoid
+                 */
+                        if (!tx_ring)
+                                init_prb_bdqc(po, rb, pg_vec, req_u, tx_ring);
+                                break;
+                default:
+                        break;
+                }
         }
         /* Done */
         else {
@@ -2875,7 +3686,11 @@ static int packet_set_ring(struct sock *sk, struct tpacket_req *req,
                 register_prot_hook(sk);
         }
         spin_unlock(&po->bind_lock);
-
+        if (closing && (po->tp_version > TPACKET_V2)) {
+                /* Because we don't support block-based V3 on tx-ring */
+                if (!tx_ring)
+                        prb_shutdown_retire_blk_timer(po, tx_ring, rb_queue);
+        }
         release_sock(sk);
 
         if (pg_vec)
diff --git a/net/phonet/af_phonet.c b/net/phonet/af_phonet.c
index c6fffd946d42..bf10ea8fbbf9 100644
--- a/net/phonet/af_phonet.c
+++ b/net/phonet/af_phonet.c
@@ -480,7 +480,7 @@ int __init_or_module phonet_proto_register(unsigned int protocol,
         if (proto_tab[protocol])
                 err = -EBUSY;
         else
-                rcu_assign_pointer(proto_tab[protocol], pp);
+                RCU_INIT_POINTER(proto_tab[protocol], pp);
         mutex_unlock(&proto_tab_lock);
 
         return err;
@@ -491,7 +491,7 @@ void phonet_proto_unregister(unsigned int protocol, struct phonet_protocol *pp)
 {
         mutex_lock(&proto_tab_lock);
         BUG_ON(proto_tab[protocol] != pp);
-        rcu_assign_pointer(proto_tab[protocol], NULL);
+        RCU_INIT_POINTER(proto_tab[protocol], NULL);
         mutex_unlock(&proto_tab_lock);
         synchronize_rcu();
         proto_unregister(pp->prot);
diff --git a/net/phonet/datagram.c b/net/phonet/datagram.c
index 2f032381bd45..bf35b4e1a14c 100644
--- a/net/phonet/datagram.c
+++ b/net/phonet/datagram.c
@@ -30,6 +30,7 @@
 #include <net/sock.h>
 
 #include <linux/phonet.h>
+#include <linux/export.h>
 #include <net/phonet/phonet.h>
 
 static int pn_backlog_rcv(struct sock *sk, struct sk_buff *skb);
diff --git a/net/phonet/pep.c b/net/phonet/pep.c
index f17fd841f948..2ba6e9fb4cbc 100644
--- a/net/phonet/pep.c
+++ b/net/phonet/pep.c
@@ -30,6 +30,7 @@
 #include <asm/ioctls.h>
 
 #include <linux/phonet.h>
+#include <linux/module.h>
 #include <net/phonet/phonet.h>
 #include <net/phonet/pep.h>
 #include <net/phonet/gprs.h>
diff --git a/net/phonet/pn_dev.c b/net/phonet/pn_dev.c
index d2df8f33160b..c5827614376b 100644
--- a/net/phonet/pn_dev.c
+++ b/net/phonet/pn_dev.c
@@ -276,7 +276,7 @@ static void phonet_route_autodel(struct net_device *dev)
         mutex_lock(&pnn->routes.lock);
         for (i = 0; i < 64; i++)
                 if (dev == pnn->routes.table[i]) {
-                        rcu_assign_pointer(pnn->routes.table[i], NULL);
+                        RCU_INIT_POINTER(pnn->routes.table[i], NULL);
                         set_bit(i, deleted);
                 }
         mutex_unlock(&pnn->routes.lock);
@@ -390,7 +390,7 @@ int phonet_route_add(struct net_device *dev, u8 daddr)
         daddr = daddr >> 2;
         mutex_lock(&routes->lock);
         if (routes->table[daddr] == NULL) {
-                rcu_assign_pointer(routes->table[daddr], dev);
+                RCU_INIT_POINTER(routes->table[daddr], dev);
                 dev_hold(dev);
                 err = 0;
         }
@@ -406,7 +406,7 @@ int phonet_route_del(struct net_device *dev, u8 daddr)
         daddr = daddr >> 2;
         mutex_lock(&routes->lock);
         if (dev == routes->table[daddr])
-                rcu_assign_pointer(routes->table[daddr], NULL);
+                RCU_INIT_POINTER(routes->table[daddr], NULL);
         else
                 dev = NULL;
         mutex_unlock(&routes->lock);
diff --git a/net/phonet/socket.c b/net/phonet/socket.c
index ab07711cf2f4..3f8d0b1603b9 100644
--- a/net/phonet/socket.c
+++ b/net/phonet/socket.c
@@ -31,6 +31,7 @@
 #include <net/tcp_states.h>
 
 #include <linux/phonet.h>
+#include <linux/export.h>
 #include <net/phonet/phonet.h>
 #include <net/phonet/pep.h>
 #include <net/phonet/pn_dev.h>
@@ -679,7 +680,7 @@ int pn_sock_bind_res(struct sock *sk, u8 res)
         mutex_lock(&resource_mutex);
         if (pnres.sk[res] == NULL) {
                 sock_hold(sk);
-                rcu_assign_pointer(pnres.sk[res], sk);
+                RCU_INIT_POINTER(pnres.sk[res], sk);
                 ret = 0;
         }
         mutex_unlock(&resource_mutex);
@@ -695,7 +696,7 @@ int pn_sock_unbind_res(struct sock *sk, u8 res)
 
         mutex_lock(&resource_mutex);
         if (pnres.sk[res] == sk) {
-                rcu_assign_pointer(pnres.sk[res], NULL);
+                RCU_INIT_POINTER(pnres.sk[res], NULL);
                 ret = 0;
         }
         mutex_unlock(&resource_mutex);
@@ -714,7 +715,7 @@ void pn_sock_unbind_all_res(struct sock *sk)
         mutex_lock(&resource_mutex);
         for (res = 0; res < 256; res++) {
                 if (pnres.sk[res] == sk) {
-                        rcu_assign_pointer(pnres.sk[res], NULL);
+                        RCU_INIT_POINTER(pnres.sk[res], NULL);
                         match++;
                 }
         }
diff --git a/net/rds/Kconfig b/net/rds/Kconfig
index ec753b3ae72a..4cf6dc7910e4 100644
--- a/net/rds/Kconfig
+++ b/net/rds/Kconfig
@@ -9,6 +9,7 @@ config RDS
 
 config RDS_RDMA
         tristate "RDS over Infiniband and iWARP"
+        select LLIST
         depends on RDS && INFINIBAND && INFINIBAND_ADDR_TRANS
         ---help---
           Allow RDS to use Infiniband and iWARP as a transport.
diff --git a/net/rds/cong.c b/net/rds/cong.c
index 6daaa49d133f..e5b65acd650b 100644
--- a/net/rds/cong.c
+++ b/net/rds/cong.c
@@ -34,6 +34,7 @@
 #include <linux/types.h>
 #include <linux/rbtree.h>
 #include <linux/bitops.h>
+#include <linux/export.h>
 
 #include "rds.h"
 
diff --git a/net/rds/connection.c b/net/rds/connection.c
index 9334d892366e..9e07c756d1f9 100644
--- a/net/rds/connection.c
+++ b/net/rds/connection.c
@@ -33,6 +33,7 @@
 #include <linux/kernel.h>
 #include <linux/list.h>
 #include <linux/slab.h>
+#include <linux/export.h>
 #include <net/inet_hashtables.h>
 
 #include "rds.h"
diff --git a/net/rds/ib.c b/net/rds/ib.c
index 3b83086bcc30..b4c8b0022fee 100644
--- a/net/rds/ib.c
+++ b/net/rds/ib.c
@@ -38,6 +38,7 @@
 #include <linux/if_arp.h>
 #include <linux/delay.h>
 #include <linux/slab.h>
+#include <linux/module.h>
 
 #include "rds.h"
 #include "ib.h"
diff --git a/net/rds/ib_rdma.c b/net/rds/ib_rdma.c
index 819c35a0d9cb..e8fdb172adbb 100644
--- a/net/rds/ib_rdma.c
+++ b/net/rds/ib_rdma.c
@@ -33,10 +33,10 @@
 #include <linux/kernel.h>
 #include <linux/slab.h>
 #include <linux/rculist.h>
+#include <linux/llist.h>
 
 #include "rds.h"
 #include "ib.h"
-#include "xlist.h"
 
 static DEFINE_PER_CPU(unsigned long, clean_list_grace);
 #define CLEAN_LIST_BUSY_BIT 0
@@ -49,7 +49,7 @@ struct rds_ib_mr {
         struct rds_ib_mr_pool   *pool;
         struct ib_fmr           *fmr;
 
-        struct xlist_head       xlist;
+        struct llist_node       llnode;
 
         /* unmap_list is for freeing */
         struct list_head        unmap_list;
@@ -71,9 +71,9 @@ struct rds_ib_mr_pool {
         atomic_t                item_count;             /* total # of MRs */
         atomic_t                dirty_count;            /* # dirty of MRs */
 
-        struct xlist_head       drop_list;              /* MRs that have reached their max_maps limit */
-        struct xlist_head       free_list;              /* unused MRs */
-        struct xlist_head       clean_list;             /* global unused & unamapped MRs */
+        struct llist_head       drop_list;              /* MRs that have reached their max_maps limit */
+        struct llist_head       free_list;              /* unused MRs */
+        struct llist_head       clean_list;             /* global unused & unamapped MRs */
         wait_queue_head_t       flush_wait;
 
         atomic_t                free_pinned;            /* memory pinned by free MRs */
@@ -220,9 +220,9 @@ struct rds_ib_mr_pool *rds_ib_create_mr_pool(struct rds_ib_device *rds_ibdev)
         if (!pool)
                 return ERR_PTR(-ENOMEM);
 
-        INIT_XLIST_HEAD(&pool->free_list);
-        INIT_XLIST_HEAD(&pool->drop_list);
-        INIT_XLIST_HEAD(&pool->clean_list);
+        init_llist_head(&pool->free_list);
+        init_llist_head(&pool->drop_list);
+        init_llist_head(&pool->clean_list);
         mutex_init(&pool->flush_lock);
         init_waitqueue_head(&pool->flush_wait);
         INIT_DELAYED_WORK(&pool->flush_worker, rds_ib_mr_pool_flush_worker);
@@ -260,26 +260,18 @@ void rds_ib_destroy_mr_pool(struct rds_ib_mr_pool *pool)
         kfree(pool);
 }
 
-static void refill_local(struct rds_ib_mr_pool *pool, struct xlist_head *xl,
-                         struct rds_ib_mr **ibmr_ret)
-{
-        struct xlist_head *ibmr_xl;
-        ibmr_xl = xlist_del_head_fast(xl);
-        *ibmr_ret = list_entry(ibmr_xl, struct rds_ib_mr, xlist);
-}
-
 static inline struct rds_ib_mr *rds_ib_reuse_fmr(struct rds_ib_mr_pool *pool)
 {
         struct rds_ib_mr *ibmr = NULL;
-        struct xlist_head *ret;
+        struct llist_node *ret;
         unsigned long *flag;
 
         preempt_disable();
         flag = &__get_cpu_var(clean_list_grace);
         set_bit(CLEAN_LIST_BUSY_BIT, flag);
-        ret = xlist_del_head(&pool->clean_list);
+        ret = llist_del_first(&pool->clean_list);
         if (ret)
-                ibmr = list_entry(ret, struct rds_ib_mr, xlist);
+                ibmr = llist_entry(ret, struct rds_ib_mr, llnode);
 
         clear_bit(CLEAN_LIST_BUSY_BIT, flag);
         preempt_enable();
@@ -529,46 +521,44 @@ static inline unsigned int rds_ib_flush_goal(struct rds_ib_mr_pool *pool, int fr
 }
 
 /*
- * given an xlist of mrs, put them all into the list_head for more processing
+ * given an llist of mrs, put them all into the list_head for more processing
  */
-static void xlist_append_to_list(struct xlist_head *xlist, struct list_head *list)
+static void llist_append_to_list(struct llist_head *llist, struct list_head *list)
 {
         struct rds_ib_mr *ibmr;
-        struct xlist_head splice;
-        struct xlist_head *cur;
-        struct xlist_head *next;
-
-        splice.next = NULL;
-        xlist_splice(xlist, &splice);
-        cur = splice.next;
-        while (cur) {
-                next = cur->next;
-                ibmr = list_entry(cur, struct rds_ib_mr, xlist);
+        struct llist_node *node;
+        struct llist_node *next;
+
+        node = llist_del_all(llist);
+        while (node) {
+                next = node->next;
+                ibmr = llist_entry(node, struct rds_ib_mr, llnode);
                 list_add_tail(&ibmr->unmap_list, list);
-                cur = next;
+                node = next;
         }
 }
 
 /*
- * this takes a list head of mrs and turns it into an xlist of clusters.
- * each cluster has an xlist of MR_CLUSTER_SIZE mrs that are ready for
- * reuse.
+ * this takes a list head of mrs and turns it into linked llist nodes
+ * of clusters.  Each cluster has linked llist nodes of
+ * MR_CLUSTER_SIZE mrs that are ready for reuse.
  */
-static void list_append_to_xlist(struct rds_ib_mr_pool *pool,
-                                struct list_head *list, struct xlist_head *xlist,
-                                struct xlist_head **tail_ret)
+static void list_to_llist_nodes(struct rds_ib_mr_pool *pool,
+                                struct list_head *list,
+                                struct llist_node **nodes_head,
+                                struct llist_node **nodes_tail)
 {
         struct rds_ib_mr *ibmr;
-        struct xlist_head *cur_mr = xlist;
-        struct xlist_head *tail_mr = NULL;
+        struct llist_node *cur = NULL;
+        struct llist_node **next = nodes_head;
 
         list_for_each_entry(ibmr, list, unmap_list) {
-                tail_mr = &ibmr->xlist;
-                tail_mr->next = NULL;
-                cur_mr->next = tail_mr;
-                cur_mr = tail_mr;
+                cur = &ibmr->llnode;
+                *next = cur;
+                next = &cur->next;
         }
-        *tail_ret = tail_mr;
+        *next = NULL;
+        *nodes_tail = cur;
 }
 
 /*
@@ -581,8 +571,8 @@ static int rds_ib_flush_mr_pool(struct rds_ib_mr_pool *pool,
                                 int free_all, struct rds_ib_mr **ibmr_ret)
 {
         struct rds_ib_mr *ibmr, *next;
-        struct xlist_head clean_xlist;
-        struct xlist_head *clean_tail;
+        struct llist_node *clean_nodes;
+        struct llist_node *clean_tail;
         LIST_HEAD(unmap_list);
         LIST_HEAD(fmr_list);
         unsigned long unpinned = 0;
@@ -603,7 +593,7 @@ static int rds_ib_flush_mr_pool(struct rds_ib_mr_pool *pool,
 
                         prepare_to_wait(&pool->flush_wait, &wait,
                                         TASK_UNINTERRUPTIBLE);
-                        if (xlist_empty(&pool->clean_list))
+                        if (llist_empty(&pool->clean_list))
                                 schedule();
 
                         ibmr = rds_ib_reuse_fmr(pool);
@@ -628,10 +618,10 @@ static int rds_ib_flush_mr_pool(struct rds_ib_mr_pool *pool,
         /* Get the list of all MRs to be dropped. Ordering matters -
          * we want to put drop_list ahead of free_list.
          */
-        xlist_append_to_list(&pool->drop_list, &unmap_list);
-        xlist_append_to_list(&pool->free_list, &unmap_list);
+        llist_append_to_list(&pool->drop_list, &unmap_list);
+        llist_append_to_list(&pool->free_list, &unmap_list);
         if (free_all)
-                xlist_append_to_list(&pool->clean_list, &unmap_list);
+                llist_append_to_list(&pool->clean_list, &unmap_list);
 
         free_goal = rds_ib_flush_goal(pool, free_all);
 
@@ -663,22 +653,22 @@ static int rds_ib_flush_mr_pool(struct rds_ib_mr_pool *pool,
         if (!list_empty(&unmap_list)) {
                 /* we have to make sure that none of the things we're about
                  * to put on the clean list would race with other cpus trying
-                 * to pull items off.  The xlist would explode if we managed to
+                 * to pull items off.  The llist would explode if we managed to
                  * remove something from the clean list and then add it back again
-                 * while another CPU was spinning on that same item in xlist_del_head.
+                 * while another CPU was spinning on that same item in llist_del_first.
                  *
-                 * This is pretty unlikely, but just in case  wait for an xlist grace period
+                 * This is pretty unlikely, but just in case  wait for an llist grace period
                  * here before adding anything back into the clean list.
                  */
                 wait_clean_list_grace();
 
-                list_append_to_xlist(pool, &unmap_list, &clean_xlist, &clean_tail);
+                list_to_llist_nodes(pool, &unmap_list, &clean_nodes, &clean_tail);
                 if (ibmr_ret)
-                        refill_local(pool, &clean_xlist, ibmr_ret);
+                        *ibmr_ret = llist_entry(clean_nodes, struct rds_ib_mr, llnode);
 
-                /* refill_local may have emptied our list */
-                if (!xlist_empty(&clean_xlist))
-                        xlist_add(clean_xlist.next, clean_tail, &pool->clean_list);
+                /* more than one entry in llist nodes */
+                if (clean_nodes->next)
+                        llist_add_batch(clean_nodes->next, clean_tail, &pool->clean_list);
 
         }
 
@@ -711,9 +701,9 @@ void rds_ib_free_mr(void *trans_private, int invalidate)
 
         /* Return it to the pool's free list */
         if (ibmr->remap_count >= pool->fmr_attr.max_maps)
-                xlist_add(&ibmr->xlist, &ibmr->xlist, &pool->drop_list);
+                llist_add(&ibmr->llnode, &pool->drop_list);
         else
-                xlist_add(&ibmr->xlist, &ibmr->xlist, &pool->free_list);
+                llist_add(&ibmr->llnode, &pool->free_list);
 
         atomic_add(ibmr->sg_len, &pool->free_pinned);
         atomic_inc(&pool->dirty_count);
diff --git a/net/rds/info.c b/net/rds/info.c
index 4fdf1b6e84ff..f1c016c4146e 100644
--- a/net/rds/info.c
+++ b/net/rds/info.c
@@ -34,6 +34,7 @@
 #include <linux/seq_file.h>
 #include <linux/slab.h>
 #include <linux/proc_fs.h>
+#include <linux/export.h>
 
 #include "rds.h"
 
diff --git a/net/rds/iw.c b/net/rds/iw.c
index f7474844f096..7826d46baa70 100644
--- a/net/rds/iw.c
+++ b/net/rds/iw.c
@@ -38,6 +38,7 @@
 #include <linux/if_arp.h>
 #include <linux/delay.h>
 #include <linux/slab.h>
+#include <linux/module.h>
 
 #include "rds.h"
 #include "iw.h"
diff --git a/net/rds/message.c b/net/rds/message.c
index 1fd3d29023d7..f0a4658f3273 100644
--- a/net/rds/message.c
+++ b/net/rds/message.c
@@ -32,6 +32,7 @@
  */
 #include <linux/kernel.h>
 #include <linux/slab.h>
+#include <linux/export.h>
 
 #include "rds.h"
 
diff --git a/net/rds/page.c b/net/rds/page.c
index b82d63e77b03..2499cd108421 100644
--- a/net/rds/page.c
+++ b/net/rds/page.c
@@ -33,6 +33,7 @@
 #include <linux/highmem.h>
 #include <linux/gfp.h>
 #include <linux/cpu.h>
+#include <linux/export.h>
 
 #include "rds.h"
 
diff --git a/net/rds/rdma_transport.c b/net/rds/rdma_transport.c
index f8760e1b6688..c2be901d19ee 100644
--- a/net/rds/rdma_transport.c
+++ b/net/rds/rdma_transport.c
@@ -30,6 +30,7 @@
  * SOFTWARE.
  *
  */
+#include <linux/module.h>
 #include <rdma/rdma_cm.h>
 
 #include "rdma_transport.h"
diff --git a/net/rds/rds.h b/net/rds/rds.h
index da8adac2bf06..7eaba1831f0d 100644
--- a/net/rds/rds.h
+++ b/net/rds/rds.h
@@ -36,8 +36,8 @@
 #define rdsdebug(fmt, args...) pr_debug("%s(): " fmt, __func__ , ##args)
 #else
 /* sigh, pr_debug() causes unused variable warnings */
-static inline void __attribute__ ((format (printf, 1, 2)))
-rdsdebug(char *fmt, ...)
+static inline __printf(1, 2)
+void rdsdebug(char *fmt, ...)
 {
 }
 #endif
@@ -625,8 +625,8 @@ void rds_for_each_conn_info(struct socket *sock, unsigned int len,
                           struct rds_info_lengths *lens,
                           int (*visitor)(struct rds_connection *, void *),
                           size_t item_len);
-void __rds_conn_error(struct rds_connection *conn, const char *, ...)
-                                __attribute__ ((format (printf, 2, 3)));
+__printf(2, 3)
+void __rds_conn_error(struct rds_connection *conn, const char *, ...);
 #define rds_conn_error(conn, fmt...) \
         __rds_conn_error(conn, KERN_WARNING "RDS: " fmt)
 
diff --git a/net/rds/recv.c b/net/rds/recv.c
index 596689e59272..bc3f8cd6d070 100644
--- a/net/rds/recv.c
+++ b/net/rds/recv.c
@@ -34,6 +34,7 @@
 #include <linux/slab.h>
 #include <net/sock.h>
 #include <linux/in.h>
+#include <linux/export.h>
 
 #include "rds.h"
 
diff --git a/net/rds/send.c b/net/rds/send.c
index aa57e22539ef..e2d63c59e7c2 100644
--- a/net/rds/send.c
+++ b/net/rds/send.c
@@ -31,11 +31,13 @@
  *
  */
 #include <linux/kernel.h>
+#include <linux/moduleparam.h>
 #include <linux/gfp.h>
 #include <net/sock.h>
 #include <linux/in.h>
 #include <linux/list.h>
 #include <linux/ratelimit.h>
+#include <linux/export.h>
 
 #include "rds.h"
 
diff --git a/net/rds/stats.c b/net/rds/stats.c
index 10c759ccac0c..7be790d60b90 100644
--- a/net/rds/stats.c
+++ b/net/rds/stats.c
@@ -33,6 +33,7 @@
 #include <linux/percpu.h>
 #include <linux/seq_file.h>
 #include <linux/proc_fs.h>
+#include <linux/export.h>
 
 #include "rds.h"
 
diff --git a/net/rds/tcp.c b/net/rds/tcp.c
index 8e0a32001c90..edac9ef2bc8b 100644
--- a/net/rds/tcp.c
+++ b/net/rds/tcp.c
@@ -33,6 +33,7 @@
 #include <linux/kernel.h>
 #include <linux/slab.h>
 #include <linux/in.h>
+#include <linux/module.h>
 #include <net/tcp.h>
 
 #include "rds.h"
diff --git a/net/rds/threads.c b/net/rds/threads.c
index 0fd90f8c5f59..65eaefcab241 100644
--- a/net/rds/threads.c
+++ b/net/rds/threads.c
@@ -32,6 +32,7 @@
  */
 #include <linux/kernel.h>
 #include <linux/random.h>
+#include <linux/export.h>
 
 #include "rds.h"
 
diff --git a/net/rds/xlist.h b/net/rds/xlist.h
deleted file mode 100644
index e6b5190daddd..000000000000
--- a/net/rds/xlist.h
+++ /dev/null
@@ -1,80 +0,0 @@
-#ifndef _LINUX_XLIST_H
-#define _LINUX_XLIST_H
-
-#include <linux/stddef.h>
-#include <linux/poison.h>
-#include <linux/prefetch.h>
-#include <asm/system.h>
-
-struct xlist_head {
-        struct xlist_head *next;
-};
-
-static inline void INIT_XLIST_HEAD(struct xlist_head *list)
-{
-        list->next = NULL;
-}
-
-static inline int xlist_empty(struct xlist_head *head)
-{
-        return head->next == NULL;
-}
-
-static inline void xlist_add(struct xlist_head *new, struct xlist_head *tail,
-                             struct xlist_head *head)
-{
-        struct xlist_head *cur;
-        struct xlist_head *check;
-
-        while (1) {
-                cur = head->next;
-                tail->next = cur;
-                check = cmpxchg(&head->next, cur, new);
-                if (check == cur)
-                        break;
-        }
-}
-
-static inline struct xlist_head *xlist_del_head(struct xlist_head *head)
-{
-        struct xlist_head *cur;
-        struct xlist_head *check;
-        struct xlist_head *next;
-
-        while (1) {
-                cur = head->next;
-                if (!cur)
-                        goto out;
-
-                next = cur->next;
-                check = cmpxchg(&head->next, cur, next);
-                if (check == cur)
-                        goto out;
-        }
-out:
-        return cur;
-}
-
-static inline struct xlist_head *xlist_del_head_fast(struct xlist_head *head)
-{
-        struct xlist_head *cur;
-
-        cur = head->next;
-        if (!cur)
-                return NULL;
-
-        head->next = cur->next;
-        return cur;
-}
-
-static inline void xlist_splice(struct xlist_head *list,
-                                struct xlist_head *head)
-{
-        struct xlist_head *cur;
-
-        WARN_ON(head->next);
-        cur = xchg(&list->next, NULL);
-        head->next = cur;
-}
-
-#endif
diff --git a/net/rfkill/core.c b/net/rfkill/core.c
index be90640a2774..5be19575c340 100644
--- a/net/rfkill/core.c
+++ b/net/rfkill/core.c
@@ -235,7 +235,7 @@ static bool __rfkill_set_hw_state(struct rfkill *rfkill,
         else
                 rfkill->state &= ~RFKILL_BLOCK_HW;
         *change = prev != blocked;
-        any = rfkill->state & RFKILL_BLOCK_ANY;
+        any = !!(rfkill->state & RFKILL_BLOCK_ANY);
         spin_unlock_irqrestore(&rfkill->lock, flags);
 
         rfkill_led_trigger_event(rfkill);
diff --git a/net/rfkill/input.c b/net/rfkill/input.c
index 1bca6d49ec96..24c55c53e6a2 100644
--- a/net/rfkill/input.c
+++ b/net/rfkill/input.c
@@ -15,6 +15,7 @@
 
 #include <linux/input.h>
 #include <linux/slab.h>
+#include <linux/moduleparam.h>
 #include <linux/workqueue.h>
 #include <linux/init.h>
 #include <linux/rfkill.h>
diff --git a/net/rfkill/rfkill-gpio.c b/net/rfkill/rfkill-gpio.c
index 256c5ddd2d72..128677d69056 100644
--- a/net/rfkill/rfkill-gpio.c
+++ b/net/rfkill/rfkill-gpio.c
@@ -101,6 +101,14 @@ static int rfkill_gpio_probe(struct platform_device *pdev)
         if (!rfkill)
                 return -ENOMEM;
 
+        if (pdata->gpio_runtime_setup) {
+                ret = pdata->gpio_runtime_setup(pdev);
+                if (ret) {
+                        pr_warn("%s: can't set up gpio\n", __func__);
+                        return ret;
+                }
+        }
+
         rfkill->pdata = pdata;
 
         len = strlen(pdata->name);
@@ -182,7 +190,10 @@ fail_alloc:
 static int rfkill_gpio_remove(struct platform_device *pdev)
 {
         struct rfkill_gpio_data *rfkill = platform_get_drvdata(pdev);
+        struct rfkill_gpio_platform_data *pdata = pdev->dev.platform_data;
 
+        if (pdata->gpio_runtime_close)
+                pdata->gpio_runtime_close(pdev);
         rfkill_unregister(rfkill->rfkill_dev);
         rfkill_destroy(rfkill->rfkill_dev);
         if (gpio_is_valid(rfkill->pdata->shutdown_gpio))
diff --git a/net/rfkill/rfkill-regulator.c b/net/rfkill/rfkill-regulator.c
index 18dc512a10f3..3ca7277a3c36 100644
--- a/net/rfkill/rfkill-regulator.c
+++ b/net/rfkill/rfkill-regulator.c
@@ -90,7 +90,6 @@ static int __devinit rfkill_regulator_probe(struct platform_device *pdev)
                                 pdata->type,
                                 &rfkill_regulator_ops, rfkill_data);
         if (rf_kill == NULL) {
-                dev_err(&pdev->dev, "Cannot alloc rfkill device\n");
                 ret = -ENOMEM;
                 goto err_rfkill_alloc;
         }
diff --git a/net/rose/rose_route.c b/net/rose/rose_route.c
index d389de197089..cd9b7ee60f3e 100644
--- a/net/rose/rose_route.c
+++ b/net/rose/rose_route.c
@@ -36,6 +36,7 @@
 #include <linux/init.h>
 #include <net/rose.h>
 #include <linux/seq_file.h>
+#include <linux/export.h>
 
 static unsigned int rose_neigh_no = 1;
 
diff --git a/net/rxrpc/ar-output.c b/net/rxrpc/ar-output.c
index 5f22e263eda7..338d793c7113 100644
--- a/net/rxrpc/ar-output.c
+++ b/net/rxrpc/ar-output.c
@@ -13,6 +13,7 @@
 #include <linux/gfp.h>
 #include <linux/skbuff.h>
 #include <linux/circ_buf.h>
+#include <linux/export.h>
 #include <net/sock.h>
 #include <net/af_rxrpc.h>
 #include "ar-internal.h"
diff --git a/net/rxrpc/ar-recvmsg.c b/net/rxrpc/ar-recvmsg.c
index 0c65013e3bfe..4b48687c3890 100644
--- a/net/rxrpc/ar-recvmsg.c
+++ b/net/rxrpc/ar-recvmsg.c
@@ -11,6 +11,7 @@
 
 #include <linux/net.h>
 #include <linux/skbuff.h>
+#include <linux/export.h>
 #include <net/sock.h>
 #include <net/af_rxrpc.h>
 #include "ar-internal.h"
diff --git a/net/sched/act_api.c b/net/sched/act_api.c
index f2fb67e701a3..93fdf131bd75 100644
--- a/net/sched/act_api.c
+++ b/net/sched/act_api.c
@@ -20,6 +20,7 @@
 #include <linux/init.h>
 #include <linux/kmod.h>
 #include <linux/err.h>
+#include <linux/module.h>
 #include <net/net_namespace.h>
 #include <net/sock.h>
 #include <net/sch_generic.h>
diff --git a/net/sched/cls_flow.c b/net/sched/cls_flow.c
index 6994214db8f8..7b582300d051 100644
--- a/net/sched/cls_flow.c
+++ b/net/sched/cls_flow.c
@@ -21,6 +21,7 @@
 #include <linux/ipv6.h>
 #include <linux/if_vlan.h>
 #include <linux/slab.h>
+#include <linux/module.h>
 
 #include <net/pkt_cls.h>
 #include <net/ip.h>
@@ -65,132 +66,134 @@ static inline u32 addr_fold(void *addr)
         return (a & 0xFFFFFFFF) ^ (BITS_PER_LONG > 32 ? a >> 32 : 0);
 }
 
-static u32 flow_get_src(struct sk_buff *skb)
+static u32 flow_get_src(const struct sk_buff *skb, int nhoff)
 {
+        __be32 *data = NULL, hdata;
+
         switch (skb->protocol) {
         case htons(ETH_P_IP):
-                if (pskb_network_may_pull(skb, sizeof(struct iphdr)))
-                        return ntohl(ip_hdr(skb)->saddr);
+                data = skb_header_pointer(skb,
+                                          nhoff + offsetof(struct iphdr,
+                                                           saddr),
+                                          4, &hdata);
                 break;
         case htons(ETH_P_IPV6):
-                if (pskb_network_may_pull(skb, sizeof(struct ipv6hdr)))
-                        return ntohl(ipv6_hdr(skb)->saddr.s6_addr32[3]);
+                data = skb_header_pointer(skb,
+                                         nhoff + offsetof(struct ipv6hdr,
+                                                          saddr.s6_addr32[3]),
+                                         4, &hdata);
                 break;
         }
 
+        if (data)
+                return ntohl(*data);
         return addr_fold(skb->sk);
 }
 
-static u32 flow_get_dst(struct sk_buff *skb)
+static u32 flow_get_dst(const struct sk_buff *skb, int nhoff)
 {
+        __be32 *data = NULL, hdata;
+
         switch (skb->protocol) {
         case htons(ETH_P_IP):
-                if (pskb_network_may_pull(skb, sizeof(struct iphdr)))
-                        return ntohl(ip_hdr(skb)->daddr);
+                data = skb_header_pointer(skb,
+                                          nhoff + offsetof(struct iphdr,
+                                                           daddr),
+                                          4, &hdata);
                 break;
         case htons(ETH_P_IPV6):
-                if (pskb_network_may_pull(skb, sizeof(struct ipv6hdr)))
-                        return ntohl(ipv6_hdr(skb)->daddr.s6_addr32[3]);
+                data = skb_header_pointer(skb,
+                                         nhoff + offsetof(struct ipv6hdr,
+                                                          daddr.s6_addr32[3]),
+                                         4, &hdata);
                 break;
         }
 
+        if (data)
+                return ntohl(*data);
         return addr_fold(skb_dst(skb)) ^ (__force u16)skb->protocol;
 }
 
-static u32 flow_get_proto(struct sk_buff *skb)
+static u32 flow_get_proto(const struct sk_buff *skb, int nhoff)
 {
+        __u8 *data = NULL, hdata;
+
         switch (skb->protocol) {
         case htons(ETH_P_IP):
-                return pskb_network_may_pull(skb, sizeof(struct iphdr)) ?
-                       ip_hdr(skb)->protocol : 0;
+                data = skb_header_pointer(skb,
+                                          nhoff + offsetof(struct iphdr,
+                                                           protocol),
+                                          1, &hdata);
+                break;
         case htons(ETH_P_IPV6):
-                return pskb_network_may_pull(skb, sizeof(struct ipv6hdr)) ?
-                       ipv6_hdr(skb)->nexthdr : 0;
-        default:
-                return 0;
+                data = skb_header_pointer(skb,
+                                         nhoff + offsetof(struct ipv6hdr,
+                                                          nexthdr),
+                                         1, &hdata);
+                break;
         }
+        if (data)
+                return *data;
+        return 0;
 }
 
-static u32 flow_get_proto_src(struct sk_buff *skb)
+/* helper function to get either src or dst port */
+static __be16 *flow_get_proto_common(const struct sk_buff *skb, int nhoff,
+                                     __be16 *_port, int dst)
 {
+        __be16 *port = NULL;
+        int poff;
+
         switch (skb->protocol) {
         case htons(ETH_P_IP): {
-                struct iphdr *iph;
-                int poff;
+                struct iphdr *iph, _iph;
 
-                if (!pskb_network_may_pull(skb, sizeof(*iph)))
+                iph = skb_header_pointer(skb, nhoff, sizeof(_iph), &_iph);
+                if (!iph)
                         break;
-                iph = ip_hdr(skb);
                 if (ip_is_fragment(iph))
                         break;
                 poff = proto_ports_offset(iph->protocol);
-                if (poff >= 0 &&
-                    pskb_network_may_pull(skb, iph->ihl * 4 + 2 + poff)) {
-                        iph = ip_hdr(skb);
-                        return ntohs(*(__be16 *)((void *)iph + iph->ihl * 4 +
-                                                 poff));
-                }
+                if (poff >= 0)
+                        port = skb_header_pointer(skb,
+                                        nhoff + iph->ihl * 4 + poff + dst,
+                                        sizeof(*_port), _port);
                 break;
         }
         case htons(ETH_P_IPV6): {
-                struct ipv6hdr *iph;
-                int poff;
+                struct ipv6hdr *iph, _iph;
 
-                if (!pskb_network_may_pull(skb, sizeof(*iph)))
+                iph = skb_header_pointer(skb, nhoff, sizeof(_iph), &_iph);
+                if (!iph)
                         break;
-                iph = ipv6_hdr(skb);
                 poff = proto_ports_offset(iph->nexthdr);
-                if (poff >= 0 &&
-                    pskb_network_may_pull(skb, sizeof(*iph) + poff + 2)) {
-                        iph = ipv6_hdr(skb);
-                        return ntohs(*(__be16 *)((void *)iph + sizeof(*iph) +
-                                                 poff));
-                }
+                if (poff >= 0)
+                        port = skb_header_pointer(skb,
+                                        nhoff + sizeof(*iph) + poff + dst,
+                                        sizeof(*_port), _port);
                 break;
         }
         }
 
-        return addr_fold(skb->sk);
+        return port;
 }
 
-static u32 flow_get_proto_dst(struct sk_buff *skb)
+static u32 flow_get_proto_src(const struct sk_buff *skb, int nhoff)
 {
-        switch (skb->protocol) {
-        case htons(ETH_P_IP): {
-                struct iphdr *iph;
-                int poff;
+        __be16 _port, *port = flow_get_proto_common(skb, nhoff, &_port, 0);
 
-                if (!pskb_network_may_pull(skb, sizeof(*iph)))
-                        break;
-                iph = ip_hdr(skb);
-                if (ip_is_fragment(iph))
-                        break;
-                poff = proto_ports_offset(iph->protocol);
-                if (poff >= 0 &&
-                    pskb_network_may_pull(skb, iph->ihl * 4 + 4 + poff)) {
-                        iph = ip_hdr(skb);
-                        return ntohs(*(__be16 *)((void *)iph + iph->ihl * 4 +
-                                                 2 + poff));
-                }
-                break;
-        }
-        case htons(ETH_P_IPV6): {
-                struct ipv6hdr *iph;
-                int poff;
+        if (port)
+                return ntohs(*port);
 
-                if (!pskb_network_may_pull(skb, sizeof(*iph)))
-                        break;
-                iph = ipv6_hdr(skb);
-                poff = proto_ports_offset(iph->nexthdr);
-                if (poff >= 0 &&
-                    pskb_network_may_pull(skb, sizeof(*iph) + poff + 4)) {
-                        iph = ipv6_hdr(skb);
-                        return ntohs(*(__be16 *)((void *)iph + sizeof(*iph) +
-                                                 poff + 2));
-                }
-                break;
-        }
-        }
+        return addr_fold(skb->sk);
+}
+
+static u32 flow_get_proto_dst(const struct sk_buff *skb, int nhoff)
+{
+        __be16 _port, *port = flow_get_proto_common(skb, nhoff, &_port, 2);
+
+        if (port)
+                return ntohs(*port);
 
         return addr_fold(skb_dst(skb)) ^ (__force u16)skb->protocol;
 }
@@ -223,7 +226,7 @@ static u32 flow_get_nfct(const struct sk_buff *skb)
 #define CTTUPLE(skb, member)                                            \
 ({                                                                      \
         enum ip_conntrack_info ctinfo;                                  \
-        struct nf_conn *ct = nf_ct_get(skb, &ctinfo);                   \
+        const struct nf_conn *ct = nf_ct_get(skb, &ctinfo);             \
         if (ct == NULL)                                                 \
                 goto fallback;                                          \
         ct->tuplehash[CTINFO2DIR(ctinfo)].tuple.member;                 \
@@ -236,7 +239,7 @@ static u32 flow_get_nfct(const struct sk_buff *skb)
 })
 #endif
 
-static u32 flow_get_nfct_src(struct sk_buff *skb)
+static u32 flow_get_nfct_src(const struct sk_buff *skb, int nhoff)
 {
         switch (skb->protocol) {
         case htons(ETH_P_IP):
@@ -245,10 +248,10 @@ static u32 flow_get_nfct_src(struct sk_buff *skb)
                 return ntohl(CTTUPLE(skb, src.u3.ip6[3]));
         }
 fallback:
-        return flow_get_src(skb);
+        return flow_get_src(skb, nhoff);
 }
 
-static u32 flow_get_nfct_dst(struct sk_buff *skb)
+static u32 flow_get_nfct_dst(const struct sk_buff *skb, int nhoff)
 {
         switch (skb->protocol) {
         case htons(ETH_P_IP):
@@ -257,21 +260,21 @@ static u32 flow_get_nfct_dst(struct sk_buff *skb)
                 return ntohl(CTTUPLE(skb, dst.u3.ip6[3]));
         }
 fallback:
-        return flow_get_dst(skb);
+        return flow_get_dst(skb, nhoff);
 }
 
-static u32 flow_get_nfct_proto_src(struct sk_buff *skb)
+static u32 flow_get_nfct_proto_src(const struct sk_buff *skb, int nhoff)
 {
         return ntohs(CTTUPLE(skb, src.u.all));
 fallback:
-        return flow_get_proto_src(skb);
+        return flow_get_proto_src(skb, nhoff);
 }
 
-static u32 flow_get_nfct_proto_dst(struct sk_buff *skb)
+static u32 flow_get_nfct_proto_dst(const struct sk_buff *skb, int nhoff)
 {
         return ntohs(CTTUPLE(skb, dst.u.all));
 fallback:
-        return flow_get_proto_dst(skb);
+        return flow_get_proto_dst(skb, nhoff);
 }
 
 static u32 flow_get_rtclassid(const struct sk_buff *skb)
@@ -313,17 +316,19 @@ static u32 flow_get_rxhash(struct sk_buff *skb)
 
 static u32 flow_key_get(struct sk_buff *skb, int key)
 {
+        int nhoff = skb_network_offset(skb);
+
         switch (key) {
         case FLOW_KEY_SRC:
-                return flow_get_src(skb);
+                return flow_get_src(skb, nhoff);
         case FLOW_KEY_DST:
-                return flow_get_dst(skb);
+                return flow_get_dst(skb, nhoff);
         case FLOW_KEY_PROTO:
-                return flow_get_proto(skb);
+                return flow_get_proto(skb, nhoff);
         case FLOW_KEY_PROTO_SRC:
-                return flow_get_proto_src(skb);
+                return flow_get_proto_src(skb, nhoff);
         case FLOW_KEY_PROTO_DST:
-                return flow_get_proto_dst(skb);
+                return flow_get_proto_dst(skb, nhoff);
         case FLOW_KEY_IIF:
                 return flow_get_iif(skb);
         case FLOW_KEY_PRIORITY:
@@ -333,13 +338,13 @@ static u32 flow_key_get(struct sk_buff *skb, int key)
         case FLOW_KEY_NFCT:
                 return flow_get_nfct(skb);
         case FLOW_KEY_NFCT_SRC:
-                return flow_get_nfct_src(skb);
+                return flow_get_nfct_src(skb, nhoff);
         case FLOW_KEY_NFCT_DST:
-                return flow_get_nfct_dst(skb);
+                return flow_get_nfct_dst(skb, nhoff);
         case FLOW_KEY_NFCT_PROTO_SRC:
-                return flow_get_nfct_proto_src(skb);
+                return flow_get_nfct_proto_src(skb, nhoff);
         case FLOW_KEY_NFCT_PROTO_DST:
-                return flow_get_nfct_proto_dst(skb);
+                return flow_get_nfct_proto_dst(skb, nhoff);
         case FLOW_KEY_RTCLASSID:
                 return flow_get_rtclassid(skb);
         case FLOW_KEY_SKUID:
diff --git a/net/sched/sch_mq.c b/net/sched/sch_mq.c
index ec5cbc848963..0a4b2f9a0094 100644
--- a/net/sched/sch_mq.c
+++ b/net/sched/sch_mq.c
@@ -11,6 +11,7 @@
 #include <linux/types.h>
 #include <linux/slab.h>
 #include <linux/kernel.h>
+#include <linux/export.h>
 #include <linux/string.h>
 #include <linux/errno.h>
 #include <linux/skbuff.h>
diff --git a/net/sched/sch_mqprio.c b/net/sched/sch_mqprio.c
index ea17cbed29ef..f88256cbacbf 100644
--- a/net/sched/sch_mqprio.c
+++ b/net/sched/sch_mqprio.c
@@ -14,6 +14,7 @@
 #include <linux/string.h>
 #include <linux/errno.h>
 #include <linux/skbuff.h>
+#include <linux/module.h>
 #include <net/netlink.h>
 #include <net/pkt_sched.h>
 #include <net/sch_generic.h>
diff --git a/net/sched/sch_sfb.c b/net/sched/sch_sfb.c
index 0a833d0c1f61..e83c272c0325 100644
--- a/net/sched/sch_sfb.c
+++ b/net/sched/sch_sfb.c
@@ -287,6 +287,12 @@ static int sfb_enqueue(struct sk_buff *skb, struct Qdisc *sch)
         u32 r, slot, salt, sfbhash;
         int ret = NET_XMIT_SUCCESS | __NET_XMIT_BYPASS;
 
+        if (unlikely(sch->q.qlen >= q->limit)) {
+                sch->qstats.overlimits++;
+                q->stats.queuedrop++;
+                goto drop;
+        }
+
         if (q->rehash_interval > 0) {
                 unsigned long limit = q->rehash_time + q->rehash_interval;
 
@@ -332,12 +338,9 @@ static int sfb_enqueue(struct sk_buff *skb, struct Qdisc *sch)
         slot ^= 1;
         sfb_skb_cb(skb)->hashes[slot] = 0;
 
-        if (unlikely(minqlen >= q->max || sch->q.qlen >= q->limit)) {
+        if (unlikely(minqlen >= q->max)) {
                 sch->qstats.overlimits++;
-                if (minqlen >= q->max)
-                        q->stats.bucketdrop++;
-                else
-                        q->stats.queuedrop++;
+                q->stats.bucketdrop++;
                 goto drop;
         }
 
diff --git a/net/sctp/associola.c b/net/sctp/associola.c
index dc16b90ddb6f..152b5b3c3fff 100644
--- a/net/sctp/associola.c
+++ b/net/sctp/associola.c
@@ -282,6 +282,7 @@ static struct sctp_association *sctp_association_init(struct sctp_association *a
                 asoc->peer.asconf_capable = 1;
         asoc->asconf_addr_del_pending = NULL;
         asoc->src_out_of_asoc_ok = 0;
+        asoc->new_transport = NULL;
 
         /* Create an input queue.  */
         sctp_inq_init(&asoc->base.inqueue);
diff --git a/net/sctp/ipv6.c b/net/sctp/ipv6.c
index aabaee41dd3e..810427833bcd 100644
--- a/net/sctp/ipv6.c
+++ b/net/sctp/ipv6.c
@@ -243,7 +243,7 @@ static int sctp_v6_xmit(struct sk_buff *skb, struct sctp_transport *transport)
         if (!(transport->param_flags & SPP_PMTUD_ENABLE))
                 skb->local_df = 1;
 
-        return ip6_xmit(sk, skb, &fl6, np->opt);
+        return ip6_xmit(sk, skb, &fl6, np->opt, np->tclass);
 }
 
 /* Returns the dst cache entry for the given source and destination ip
diff --git a/net/sctp/outqueue.c b/net/sctp/outqueue.c
index a6d27bf563a5..14c2b06028ff 100644
--- a/net/sctp/outqueue.c
+++ b/net/sctp/outqueue.c
@@ -917,6 +917,8 @@ static int sctp_outq_flush(struct sctp_outq *q, int rtx_timeout)
                  * current cwnd).
                  */
                 if (!list_empty(&q->retransmit)) {
+                        if (asoc->peer.retran_path->state == SCTP_UNCONFIRMED)
+                                goto sctp_flush_out;
                         if (transport == asoc->peer.retran_path)
                                 goto retran;
 
@@ -989,6 +991,8 @@ static int sctp_outq_flush(struct sctp_outq *q, int rtx_timeout)
                             ((new_transport->state == SCTP_INACTIVE) ||
                              (new_transport->state == SCTP_UNCONFIRMED)))
                                 new_transport = asoc->peer.active_path;
+                        if (new_transport->state == SCTP_UNCONFIRMED)
+                                continue;
 
                         /* Change packets if necessary.  */
                         if (new_transport != transport) {
diff --git a/net/sctp/proc.c b/net/sctp/proc.c
index 05a6ce214714..1e2eee88c3ea 100644
--- a/net/sctp/proc.c
+++ b/net/sctp/proc.c
@@ -37,6 +37,7 @@
 #include <linux/types.h>
 #include <linux/seq_file.h>
 #include <linux/init.h>
+#include <linux/export.h>
 #include <net/sctp/sctp.h>
 #include <net/ip.h> /* for snmp_fold_field */
 
diff --git a/net/sctp/protocol.c b/net/sctp/protocol.c
index 91784f44a2e2..61b9fca5a173 100644
--- a/net/sctp/protocol.c
+++ b/net/sctp/protocol.c
@@ -1299,7 +1299,7 @@ SCTP_STATIC __init int sctp_init(void)
         max_share = min(4UL*1024*1024, limit);
 
         sysctl_sctp_rmem[0] = SK_MEM_QUANTUM; /* give each asoc 1 page min */
-        sysctl_sctp_rmem[1] = (1500 *(sizeof(struct sk_buff) + 1));
+        sysctl_sctp_rmem[1] = 1500 * SKB_TRUESIZE(1);
         sysctl_sctp_rmem[2] = max(sysctl_sctp_rmem[1], max_share);
 
         sysctl_sctp_wmem[0] = SK_MEM_QUANTUM;
diff --git a/net/sctp/sm_make_chunk.c b/net/sctp/sm_make_chunk.c
index 81db4e385352..0121e0ab0351 100644
--- a/net/sctp/sm_make_chunk.c
+++ b/net/sctp/sm_make_chunk.c
@@ -3015,6 +3015,7 @@ static __be16 sctp_process_asconf_param(struct sctp_association *asoc,
                 /* Start the heartbeat timer. */
                 if (!mod_timer(&peer->hb_timer, sctp_transport_timeout(peer)))
                         sctp_transport_hold(peer);
+                asoc->new_transport = peer;
                 break;
         case SCTP_PARAM_DEL_IP:
                 /* ADDIP 4.3 D7) If a request is received to delete the
diff --git a/net/sctp/sm_statefuns.c b/net/sctp/sm_statefuns.c
index a0f31e6c1c63..891f5db8cc31 100644
--- a/net/sctp/sm_statefuns.c
+++ b/net/sctp/sm_statefuns.c
@@ -3618,6 +3618,11 @@ sctp_disposition_t sctp_sf_do_asconf(const struct sctp_endpoint *ep,
          */
         asconf_ack->dest = chunk->source;
         sctp_add_cmd_sf(commands, SCTP_CMD_REPLY, SCTP_CHUNK(asconf_ack));
+        if (asoc->new_transport) {
+                sctp_sf_heartbeat(ep, asoc, type, asoc->new_transport,
+                    commands);
+                ((struct sctp_association *)asoc)->new_transport = NULL;
+        }
 
         return SCTP_DISPOSITION_CONSUME;
 }
diff --git a/net/sctp/socket.c b/net/sctp/socket.c
index 836aa63ee121..13bf5fcdbff1 100644
--- a/net/sctp/socket.c
+++ b/net/sctp/socket.c
@@ -78,6 +78,7 @@
 #include <net/inet_common.h>
 
 #include <linux/socket.h> /* for sa_family_t */
+#include <linux/export.h>
 #include <net/sock.h>
 #include <net/sctp/sctp.h>
 #include <net/sctp/sm.h>
diff --git a/net/socket.c b/net/socket.c
index ffe92ca32f2a..2877647f347b 100644
--- a/net/socket.c
+++ b/net/socket.c
@@ -2472,7 +2472,7 @@ int sock_register(const struct net_proto_family *ops)
                                       lockdep_is_held(&net_family_lock)))
                 err = -EEXIST;
         else {
-                rcu_assign_pointer(net_families[ops->family], ops);
+                RCU_INIT_POINTER(net_families[ops->family], ops);
                 err = 0;
         }
         spin_unlock(&net_family_lock);
@@ -2500,7 +2500,7 @@ void sock_unregister(int family)
         BUG_ON(family < 0 || family >= NPROTO);
 
         spin_lock(&net_family_lock);
-        rcu_assign_pointer(net_families[family], NULL);
+        RCU_INIT_POINTER(net_families[family], NULL);
         spin_unlock(&net_family_lock);
 
         synchronize_rcu();
diff --git a/net/sunrpc/addr.c b/net/sunrpc/addr.c
index 4195233c4914..67a655ee82a9 100644
--- a/net/sunrpc/addr.c
+++ b/net/sunrpc/addr.c
@@ -19,6 +19,7 @@
 #include <net/ipv6.h>
 #include <linux/sunrpc/clnt.h>
 #include <linux/slab.h>
+#include <linux/export.h>
 
 #if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
 
@@ -255,12 +256,13 @@ EXPORT_SYMBOL_GPL(rpc_pton);
 /**
  * rpc_sockaddr2uaddr - Construct a universal address string from @sap.
  * @sap: socket address
+ * @gfp_flags: allocation mode
  *
  * Returns a %NUL-terminated string in dynamically allocated memory;
  * otherwise NULL is returned if an error occurred.  Caller must
  * free the returned string.
  */
-char *rpc_sockaddr2uaddr(const struct sockaddr *sap)
+char *rpc_sockaddr2uaddr(const struct sockaddr *sap, gfp_t gfp_flags)
 {
         char portbuf[RPCBIND_MAXUADDRPLEN];
         char addrbuf[RPCBIND_MAXUADDRLEN];
@@ -288,9 +290,8 @@ char *rpc_sockaddr2uaddr(const struct sockaddr *sap)
         if (strlcat(addrbuf, portbuf, sizeof(addrbuf)) > sizeof(addrbuf))
                 return NULL;
 
-        return kstrdup(addrbuf, GFP_KERNEL);
+        return kstrdup(addrbuf, gfp_flags);
 }
-EXPORT_SYMBOL_GPL(rpc_sockaddr2uaddr);
 
 /**
  * rpc_uaddr2sockaddr - convert a universal address to a socket address.
diff --git a/net/sunrpc/auth_gss/auth_gss.c b/net/sunrpc/auth_gss/auth_gss.c
index 364eb45e989d..afb56553dfe7 100644
--- a/net/sunrpc/auth_gss/auth_gss.c
+++ b/net/sunrpc/auth_gss/auth_gss.c
@@ -122,7 +122,7 @@ gss_cred_set_ctx(struct rpc_cred *cred, struct gss_cl_ctx *ctx)
         if (!test_bit(RPCAUTH_CRED_NEW, &cred->cr_flags))
                 return;
         gss_get_ctx(ctx);
-        rcu_assign_pointer(gss_cred->gc_ctx, ctx);
+        RCU_INIT_POINTER(gss_cred->gc_ctx, ctx);
         set_bit(RPCAUTH_CRED_UPTODATE, &cred->cr_flags);
         smp_mb__before_clear_bit();
         clear_bit(RPCAUTH_CRED_NEW, &cred->cr_flags);
@@ -603,26 +603,6 @@ out:
         return err;
 }
 
-static ssize_t
-gss_pipe_upcall(struct file *filp, struct rpc_pipe_msg *msg,
-                char __user *dst, size_t buflen)
-{
-        char *data = (char *)msg->data + msg->copied;
-        size_t mlen = min(msg->len, buflen);
-        unsigned long left;
-
-        left = copy_to_user(dst, data, mlen);
-        if (left == mlen) {
-                msg->errno = -EFAULT;
-                return -EFAULT;
-        }
-
-        mlen -= left;
-        msg->copied += mlen;
-        msg->errno = 0;
-        return mlen;
-}
-
 #define MSG_BUF_MAXSIZE 1024
 
 static ssize_t
@@ -970,7 +950,7 @@ gss_destroy_nullcred(struct rpc_cred *cred)
         struct gss_auth *gss_auth = container_of(cred->cr_auth, struct gss_auth, rpc_auth);
         struct gss_cl_ctx *ctx = gss_cred->gc_ctx;
 
-        rcu_assign_pointer(gss_cred->gc_ctx, NULL);
+        RCU_INIT_POINTER(gss_cred->gc_ctx, NULL);
         call_rcu(&cred->cr_rcu, gss_free_cred_callback);
         if (ctx)
                 gss_put_ctx(ctx);
@@ -1590,7 +1570,7 @@ static const struct rpc_credops gss_nullops = {
 };
 
 static const struct rpc_pipe_ops gss_upcall_ops_v0 = {
-        .upcall         = gss_pipe_upcall,
+        .upcall         = rpc_pipe_generic_upcall,
         .downcall       = gss_pipe_downcall,
         .destroy_msg    = gss_pipe_destroy_msg,
         .open_pipe      = gss_pipe_open_v0,
@@ -1598,7 +1578,7 @@ static const struct rpc_pipe_ops gss_upcall_ops_v0 = {
 };
 
 static const struct rpc_pipe_ops gss_upcall_ops_v1 = {
-        .upcall         = gss_pipe_upcall,
+        .upcall         = rpc_pipe_generic_upcall,
         .downcall       = gss_pipe_downcall,
         .destroy_msg    = gss_pipe_destroy_msg,
         .open_pipe      = gss_pipe_open_v1,
diff --git a/net/sunrpc/auth_unix.c b/net/sunrpc/auth_unix.c
index 4cb70dc6e7ad..e50502d8ceb7 100644
--- a/net/sunrpc/auth_unix.c
+++ b/net/sunrpc/auth_unix.c
@@ -129,6 +129,9 @@ unx_match(struct auth_cred *acred, struct rpc_cred *rcred, int flags)
         for (i = 0; i < groups ; i++)
                 if (cred->uc_gids[i] != GROUP_AT(acred->group_info, i))
                         return 0;
+        if (groups < NFS_NGROUPS &&
+            cred->uc_gids[groups] != NOGROUP)
+                return 0;
         return 1;
 }
 
diff --git a/net/sunrpc/backchannel_rqst.c b/net/sunrpc/backchannel_rqst.c
index 91eaa26e4c42..3ad435a14ada 100644
--- a/net/sunrpc/backchannel_rqst.c
+++ b/net/sunrpc/backchannel_rqst.c
@@ -24,6 +24,7 @@ SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 #include <linux/tcp.h>
 #include <linux/slab.h>
 #include <linux/sunrpc/xprt.h>
+#include <linux/export.h>
 
 #ifdef RPC_DEBUG
 #define RPCDBG_FACILITY RPCDBG_TRANS
diff --git a/net/sunrpc/clnt.c b/net/sunrpc/clnt.c
index c5347d29cfb7..f0268ea7e711 100644
--- a/net/sunrpc/clnt.c
+++ b/net/sunrpc/clnt.c
@@ -850,7 +850,9 @@ rpc_restart_call_prepare(struct rpc_task *task)
 {
         if (RPC_ASSASSINATED(task))
                 return 0;
-        task->tk_action = rpc_prepare_task;
+        task->tk_action = call_start;
+        if (task->tk_ops->rpc_call_prepare != NULL)
+                task->tk_action = rpc_prepare_task;
         return 1;
 }
 EXPORT_SYMBOL_GPL(rpc_restart_call_prepare);
diff --git a/net/sunrpc/rpc_pipe.c b/net/sunrpc/rpc_pipe.c
index b181e3441323..bfddd68b31d3 100644
--- a/net/sunrpc/rpc_pipe.c
+++ b/net/sunrpc/rpc_pipe.c
@@ -77,6 +77,26 @@ rpc_timeout_upcall_queue(struct work_struct *work)
         rpc_purge_list(rpci, &free_list, destroy_msg, -ETIMEDOUT);
 }
 
+ssize_t rpc_pipe_generic_upcall(struct file *filp, struct rpc_pipe_msg *msg,
+                                char __user *dst, size_t buflen)
+{
+        char *data = (char *)msg->data + msg->copied;
+        size_t mlen = min(msg->len - msg->copied, buflen);
+        unsigned long left;
+
+        left = copy_to_user(dst, data, mlen);
+        if (left == mlen) {
+                msg->errno = -EFAULT;
+                return -EFAULT;
+        }
+
+        mlen -= left;
+        msg->copied += mlen;
+        msg->errno = 0;
+        return mlen;
+}
+EXPORT_SYMBOL_GPL(rpc_pipe_generic_upcall);
+
 /**
  * rpc_queue_upcall - queue an upcall message to userspace
  * @inode: inode of upcall pipe on which to queue given message
@@ -1084,3 +1104,6 @@ void unregister_rpc_pipefs(void)
         kmem_cache_destroy(rpc_inode_cachep);
         unregister_filesystem(&rpc_pipe_fs_type);
 }
+
+/* Make 'mount -t rpc_pipefs ...' autoload this module. */
+MODULE_ALIAS("rpc_pipefs");
diff --git a/net/sunrpc/rpcb_clnt.c b/net/sunrpc/rpcb_clnt.c
index e45d2fbbe5a8..8761bf8e36fc 100644
--- a/net/sunrpc/rpcb_clnt.c
+++ b/net/sunrpc/rpcb_clnt.c
@@ -114,6 +114,9 @@ static struct rpc_program	rpcb_program;
 static struct rpc_clnt *        rpcb_local_clnt;
 static struct rpc_clnt *        rpcb_local_clnt4;
 
+DEFINE_SPINLOCK(rpcb_clnt_lock);
+unsigned int                    rpcb_users;
+
 struct rpcbind_args {
         struct rpc_xprt *       r_xprt;
 
@@ -161,6 +164,56 @@ static void rpcb_map_release(void *data)
         kfree(map);
 }
 
+static int rpcb_get_local(void)
+{
+        int cnt;
+
+        spin_lock(&rpcb_clnt_lock);
+        if (rpcb_users)
+                rpcb_users++;
+        cnt = rpcb_users;
+        spin_unlock(&rpcb_clnt_lock);
+
+        return cnt;
+}
+
+void rpcb_put_local(void)
+{
+        struct rpc_clnt *clnt = rpcb_local_clnt;
+        struct rpc_clnt *clnt4 = rpcb_local_clnt4;
+        int shutdown;
+
+        spin_lock(&rpcb_clnt_lock);
+        if (--rpcb_users == 0) {
+                rpcb_local_clnt = NULL;
+                rpcb_local_clnt4 = NULL;
+        }
+        shutdown = !rpcb_users;
+        spin_unlock(&rpcb_clnt_lock);
+
+        if (shutdown) {
+                /*
+                 * cleanup_rpcb_clnt - remove xprtsock's sysctls, unregister
+                 */
+                if (clnt4)
+                        rpc_shutdown_client(clnt4);
+                if (clnt)
+                        rpc_shutdown_client(clnt);
+        }
+}
+
+static void rpcb_set_local(struct rpc_clnt *clnt, struct rpc_clnt *clnt4)
+{
+        /* Protected by rpcb_create_local_mutex */
+        rpcb_local_clnt = clnt;
+        rpcb_local_clnt4 = clnt4;
+        smp_wmb(); 
+        rpcb_users = 1;
+        dprintk("RPC:       created new rpcb local clients (rpcb_local_clnt: "
+                        "%p, rpcb_local_clnt4: %p)\n", rpcb_local_clnt,
+                        rpcb_local_clnt4);
+}
+
 /*
  * Returns zero on success, otherwise a negative errno value
  * is returned.
@@ -205,9 +258,7 @@ static int rpcb_create_local_unix(void)
                 clnt4 = NULL;
         }
 
-        /* Protected by rpcb_create_local_mutex */
-        rpcb_local_clnt = clnt;
-        rpcb_local_clnt4 = clnt4;
+        rpcb_set_local(clnt, clnt4);
 
 out:
         return result;
@@ -259,9 +310,7 @@ static int rpcb_create_local_net(void)
                 clnt4 = NULL;
         }
 
-        /* Protected by rpcb_create_local_mutex */
-        rpcb_local_clnt = clnt;
-        rpcb_local_clnt4 = clnt4;
+        rpcb_set_local(clnt, clnt4);
 
 out:
         return result;
@@ -271,16 +320,16 @@ out:
  * Returns zero on success, otherwise a negative errno value
  * is returned.
  */
-static int rpcb_create_local(void)
+int rpcb_create_local(void)
 {
         static DEFINE_MUTEX(rpcb_create_local_mutex);
         int result = 0;
 
-        if (rpcb_local_clnt)
+        if (rpcb_get_local())
                 return result;
 
         mutex_lock(&rpcb_create_local_mutex);
-        if (rpcb_local_clnt)
+        if (rpcb_get_local())
                 goto out;
 
         if (rpcb_create_local_unix() != 0)
@@ -382,11 +431,6 @@ int rpcb_register(u32 prog, u32 vers, int prot, unsigned short port)
         struct rpc_message msg = {
                 .rpc_argp       = &map,
         };
-        int error;
-
-        error = rpcb_create_local();
-        if (error)
-                return error;
 
         dprintk("RPC:       %sregistering (%u, %u, %d, %u) with local "
                         "rpcbind\n", (port ? "" : "un"),
@@ -410,7 +454,7 @@ static int rpcb_register_inet4(const struct sockaddr *sap,
         unsigned short port = ntohs(sin->sin_port);
         int result;
 
-        map->r_addr = rpc_sockaddr2uaddr(sap);
+        map->r_addr = rpc_sockaddr2uaddr(sap, GFP_KERNEL);
 
         dprintk("RPC:       %sregistering [%u, %u, %s, '%s'] with "
                 "local rpcbind\n", (port ? "" : "un"),
@@ -437,7 +481,7 @@ static int rpcb_register_inet6(const struct sockaddr *sap,
         unsigned short port = ntohs(sin6->sin6_port);
         int result;
 
-        map->r_addr = rpc_sockaddr2uaddr(sap);
+        map->r_addr = rpc_sockaddr2uaddr(sap, GFP_KERNEL);
 
         dprintk("RPC:       %sregistering [%u, %u, %s, '%s'] with "
                 "local rpcbind\n", (port ? "" : "un"),
@@ -522,11 +566,7 @@ int rpcb_v4_register(const u32 program, const u32 version,
         struct rpc_message msg = {
                 .rpc_argp       = &map,
         };
-        int error;
 
-        error = rpcb_create_local();
-        if (error)
-                return error;
         if (rpcb_local_clnt4 == NULL)
                 return -EPROTONOSUPPORT;
 
@@ -686,7 +726,7 @@ void rpcb_getport_async(struct rpc_task *task)
         case RPCBVERS_4:
         case RPCBVERS_3:
                 map->r_netid = rpc_peeraddr2str(clnt, RPC_DISPLAY_NETID);
-                map->r_addr = rpc_sockaddr2uaddr(sap);
+                map->r_addr = rpc_sockaddr2uaddr(sap, GFP_ATOMIC);
                 map->r_owner = "";
                 break;
         case RPCBVERS_2:
@@ -1060,15 +1100,3 @@ static struct rpc_program rpcb_program = {
         .version        = rpcb_version,
         .stats          = &rpcb_stats,
 };
-
-/**
- * cleanup_rpcb_clnt - remove xprtsock's sysctls, unregister
- *
- */
-void cleanup_rpcb_clnt(void)
-{
-        if (rpcb_local_clnt4)
-                rpc_shutdown_client(rpcb_local_clnt4);
-        if (rpcb_local_clnt)
-                rpc_shutdown_client(rpcb_local_clnt);
-}
diff --git a/net/sunrpc/socklib.c b/net/sunrpc/socklib.c
index 10b4319ebbca..145e6784f508 100644
--- a/net/sunrpc/socklib.c
+++ b/net/sunrpc/socklib.c
@@ -14,6 +14,7 @@
 #include <linux/pagemap.h>
 #include <linux/udp.h>
 #include <linux/sunrpc/xdr.h>
+#include <linux/export.h>
 
 
 /**
diff --git a/net/sunrpc/sunrpc_syms.c b/net/sunrpc/sunrpc_syms.c
index 9d0809160994..8ec9778c3f4a 100644
--- a/net/sunrpc/sunrpc_syms.c
+++ b/net/sunrpc/sunrpc_syms.c
@@ -61,8 +61,6 @@ static struct pernet_operations sunrpc_net_ops = {
 
 extern struct cache_detail unix_gid_cache;
 
-extern void cleanup_rpcb_clnt(void);
-
 static int __init
 init_sunrpc(void)
 {
@@ -102,7 +100,6 @@ out:
 static void __exit
 cleanup_sunrpc(void)
 {
-        cleanup_rpcb_clnt();
         rpcauth_remove_module();
         cleanup_socket_xprt();
         svc_cleanup_xprt_sock();
diff --git a/net/sunrpc/svc.c b/net/sunrpc/svc.c
index 6a69a1131fb7..6e038884ae0c 100644
--- a/net/sunrpc/svc.c
+++ b/net/sunrpc/svc.c
@@ -295,6 +295,18 @@ svc_pool_map_put(void)
 }
 
 
+static int svc_pool_map_get_node(unsigned int pidx)
+{
+        const struct svc_pool_map *m = &svc_pool_map;
+
+        if (m->count) {
+                if (m->mode == SVC_POOL_PERCPU)
+                        return cpu_to_node(m->pool_to[pidx]);
+                if (m->mode == SVC_POOL_PERNODE)
+                        return m->pool_to[pidx];
+        }
+        return NUMA_NO_NODE;
+}
 /*
  * Set the given thread's cpus_allowed mask so that it
  * will only run on cpus in the given pool.
@@ -354,6 +366,42 @@ svc_pool_for_cpu(struct svc_serv *serv, int cpu)
         return &serv->sv_pools[pidx % serv->sv_nrpools];
 }
 
+static int svc_rpcb_setup(struct svc_serv *serv)
+{
+        int err;
+
+        err = rpcb_create_local();
+        if (err)
+                return err;
+
+        /* Remove any stale portmap registrations */
+        svc_unregister(serv);
+        return 0;
+}
+
+void svc_rpcb_cleanup(struct svc_serv *serv)
+{
+        svc_unregister(serv);
+        rpcb_put_local();
+}
+EXPORT_SYMBOL_GPL(svc_rpcb_cleanup);
+
+static int svc_uses_rpcbind(struct svc_serv *serv)
+{
+        struct svc_program      *progp;
+        unsigned int            i;
+
+        for (progp = serv->sv_program; progp; progp = progp->pg_next) {
+                for (i = 0; i < progp->pg_nvers; i++) {
+                        if (progp->pg_vers[i] == NULL)
+                                continue;
+                        if (progp->pg_vers[i]->vs_hidden == 0)
+                                return 1;
+                }
+        }
+
+        return 0;
+}
 
 /*
  * Create an RPC service
@@ -419,8 +467,15 @@ __svc_create(struct svc_program *prog, unsigned int bufsize, int npools,
                 spin_lock_init(&pool->sp_lock);
         }
 
-        /* Remove any stale portmap registrations */
-        svc_unregister(serv);
+        if (svc_uses_rpcbind(serv)) {
+                if (svc_rpcb_setup(serv) < 0) {
+                        kfree(serv->sv_pools);
+                        kfree(serv);
+                        return NULL;
+                }
+                if (!serv->sv_shutdown)
+                        serv->sv_shutdown = svc_rpcb_cleanup;
+        }
 
         return serv;
 }
@@ -488,7 +543,6 @@ svc_destroy(struct svc_serv *serv)
         if (svc_serv_is_pooled(serv))
                 svc_pool_map_put();
 
-        svc_unregister(serv);
         kfree(serv->sv_pools);
         kfree(serv);
 }
@@ -499,7 +553,7 @@ EXPORT_SYMBOL_GPL(svc_destroy);
  * We allocate pages and place them in rq_argpages.
  */
 static int
-svc_init_buffer(struct svc_rqst *rqstp, unsigned int size)
+svc_init_buffer(struct svc_rqst *rqstp, unsigned int size, int node)
 {
         unsigned int pages, arghi;
 
@@ -513,7 +567,7 @@ svc_init_buffer(struct svc_rqst *rqstp, unsigned int size)
         arghi = 0;
         BUG_ON(pages > RPCSVC_MAXPAGES);
         while (pages) {
-                struct page *p = alloc_page(GFP_KERNEL);
+                struct page *p = alloc_pages_node(node, GFP_KERNEL, 0);
                 if (!p)
                         break;
                 rqstp->rq_pages[arghi++] = p;
@@ -536,11 +590,11 @@ svc_release_buffer(struct svc_rqst *rqstp)
 }
 
 struct svc_rqst *
-svc_prepare_thread(struct svc_serv *serv, struct svc_pool *pool)
+svc_prepare_thread(struct svc_serv *serv, struct svc_pool *pool, int node)
 {
         struct svc_rqst *rqstp;
 
-        rqstp = kzalloc(sizeof(*rqstp), GFP_KERNEL);
+        rqstp = kzalloc_node(sizeof(*rqstp), GFP_KERNEL, node);
         if (!rqstp)
                 goto out_enomem;
 
@@ -554,15 +608,15 @@ svc_prepare_thread(struct svc_serv *serv, struct svc_pool *pool)
         rqstp->rq_server = serv;
         rqstp->rq_pool = pool;
 
-        rqstp->rq_argp = kmalloc(serv->sv_xdrsize, GFP_KERNEL);
+        rqstp->rq_argp = kmalloc_node(serv->sv_xdrsize, GFP_KERNEL, node);
         if (!rqstp->rq_argp)
                 goto out_thread;
 
-        rqstp->rq_resp = kmalloc(serv->sv_xdrsize, GFP_KERNEL);
+        rqstp->rq_resp = kmalloc_node(serv->sv_xdrsize, GFP_KERNEL, node);
         if (!rqstp->rq_resp)
                 goto out_thread;
 
-        if (!svc_init_buffer(rqstp, serv->sv_max_mesg))
+        if (!svc_init_buffer(rqstp, serv->sv_max_mesg, node))
                 goto out_thread;
 
         return rqstp;
@@ -647,6 +701,7 @@ svc_set_num_threads(struct svc_serv *serv, struct svc_pool *pool, int nrservs)
         struct svc_pool *chosen_pool;
         int error = 0;
         unsigned int state = serv->sv_nrthreads-1;
+        int node;
 
         if (pool == NULL) {
                 /* The -1 assumes caller has done a svc_get() */
@@ -662,14 +717,16 @@ svc_set_num_threads(struct svc_serv *serv, struct svc_pool *pool, int nrservs)
                 nrservs--;
                 chosen_pool = choose_pool(serv, pool, &state);
 
-                rqstp = svc_prepare_thread(serv, chosen_pool);
+                node = svc_pool_map_get_node(chosen_pool->sp_id);
+                rqstp = svc_prepare_thread(serv, chosen_pool, node);
                 if (IS_ERR(rqstp)) {
                         error = PTR_ERR(rqstp);
                         break;
                 }
 
                 __module_get(serv->sv_module);
-                task = kthread_create(serv->sv_function, rqstp, serv->sv_name);
+                task = kthread_create_on_node(serv->sv_function, rqstp,
+                                              node, serv->sv_name);
                 if (IS_ERR(task)) {
                         error = PTR_ERR(task);
                         module_put(serv->sv_module);
@@ -956,9 +1013,8 @@ static void svc_unregister(const struct svc_serv *serv)
 /*
  * Printk the given error with the address of the client that caused it.
  */
-static int
-__attribute__ ((format (printf, 2, 3)))
-svc_printk(struct svc_rqst *rqstp, const char *fmt, ...)
+static __printf(2, 3)
+int svc_printk(struct svc_rqst *rqstp, const char *fmt, ...)
 {
         va_list args;
         int     r;
diff --git a/net/sunrpc/svc_xprt.c b/net/sunrpc/svc_xprt.c
index bd31208bbb61..447cd0eb415c 100644
--- a/net/sunrpc/svc_xprt.c
+++ b/net/sunrpc/svc_xprt.c
@@ -14,6 +14,7 @@
 #include <linux/sunrpc/svc_xprt.h>
 #include <linux/sunrpc/svcsock.h>
 #include <linux/sunrpc/xprt.h>
+#include <linux/module.h>
 
 #define RPCDBG_FACILITY RPCDBG_SVCXPRT
 
@@ -254,8 +255,6 @@ EXPORT_SYMBOL_GPL(svc_create_xprt);
  */
 void svc_xprt_copy_addrs(struct svc_rqst *rqstp, struct svc_xprt *xprt)
 {
-        struct sockaddr *sin;
-
         memcpy(&rqstp->rq_addr, &xprt->xpt_remote, xprt->xpt_remotelen);
         rqstp->rq_addrlen = xprt->xpt_remotelen;
 
@@ -263,15 +262,8 @@ void svc_xprt_copy_addrs(struct svc_rqst *rqstp, struct svc_xprt *xprt)
          * Destination address in request is needed for binding the
          * source address in RPC replies/callbacks later.
          */
-        sin = (struct sockaddr *)&xprt->xpt_local;
-        switch (sin->sa_family) {
-        case AF_INET:
-                rqstp->rq_daddr.addr = ((struct sockaddr_in *)sin)->sin_addr;
-                break;
-        case AF_INET6:
-                rqstp->rq_daddr.addr6 = ((struct sockaddr_in6 *)sin)->sin6_addr;
-                break;
-        }
+        memcpy(&rqstp->rq_daddr, &xprt->xpt_local, xprt->xpt_locallen);
+        rqstp->rq_daddrlen = xprt->xpt_locallen;
 }
 EXPORT_SYMBOL_GPL(svc_xprt_copy_addrs);
 
diff --git a/net/sunrpc/svcsock.c b/net/sunrpc/svcsock.c
index 767d494de7a2..71bed1c1c77a 100644
--- a/net/sunrpc/svcsock.c
+++ b/net/sunrpc/svcsock.c
@@ -21,6 +21,7 @@
 
 #include <linux/kernel.h>
 #include <linux/sched.h>
+#include <linux/module.h>
 #include <linux/errno.h>
 #include <linux/fcntl.h>
 #include <linux/net.h>
@@ -143,19 +144,20 @@ static void svc_set_cmsg_data(struct svc_rqst *rqstp, struct cmsghdr *cmh)
                         cmh->cmsg_level = SOL_IP;
                         cmh->cmsg_type = IP_PKTINFO;
                         pki->ipi_ifindex = 0;
-                        pki->ipi_spec_dst.s_addr = rqstp->rq_daddr.addr.s_addr;
+                        pki->ipi_spec_dst.s_addr =
+                                 svc_daddr_in(rqstp)->sin_addr.s_addr;
                         cmh->cmsg_len = CMSG_LEN(sizeof(*pki));
                 }
                 break;
 
         case AF_INET6: {
                         struct in6_pktinfo *pki = CMSG_DATA(cmh);
+                        struct sockaddr_in6 *daddr = svc_daddr_in6(rqstp);
 
                         cmh->cmsg_level = SOL_IPV6;
                         cmh->cmsg_type = IPV6_PKTINFO;
-                        pki->ipi6_ifindex = 0;
-                        ipv6_addr_copy(&pki->ipi6_addr,
-                                        &rqstp->rq_daddr.addr6);
+                        pki->ipi6_ifindex = daddr->sin6_scope_id;
+                        ipv6_addr_copy(&pki->ipi6_addr, &daddr->sin6_addr);
                         cmh->cmsg_len = CMSG_LEN(sizeof(*pki));
                 }
                 break;
@@ -498,9 +500,13 @@ static int svc_udp_get_dest_address4(struct svc_rqst *rqstp,
                                      struct cmsghdr *cmh)
 {
         struct in_pktinfo *pki = CMSG_DATA(cmh);
+        struct sockaddr_in *daddr = svc_daddr_in(rqstp);
+
         if (cmh->cmsg_type != IP_PKTINFO)
                 return 0;
-        rqstp->rq_daddr.addr.s_addr = pki->ipi_spec_dst.s_addr;
+
+        daddr->sin_family = AF_INET;
+        daddr->sin_addr.s_addr = pki->ipi_spec_dst.s_addr;
         return 1;
 }
 
@@ -511,9 +517,14 @@ static int svc_udp_get_dest_address6(struct svc_rqst *rqstp,
                                      struct cmsghdr *cmh)
 {
         struct in6_pktinfo *pki = CMSG_DATA(cmh);
+        struct sockaddr_in6 *daddr = svc_daddr_in6(rqstp);
+
         if (cmh->cmsg_type != IPV6_PKTINFO)
                 return 0;
-        ipv6_addr_copy(&rqstp->rq_daddr.addr6, &pki->ipi6_addr);
+
+        daddr->sin6_family = AF_INET6;
+        ipv6_addr_copy(&daddr->sin6_addr, &pki->ipi6_addr);
+        daddr->sin6_scope_id = pki->ipi6_ifindex;
         return 1;
 }
 
@@ -614,6 +625,7 @@ static int svc_udp_recvfrom(struct svc_rqst *rqstp)
                 skb_free_datagram_locked(svsk->sk_sk, skb);
                 return 0;
         }
+        rqstp->rq_daddrlen = svc_addr_len(svc_daddr(rqstp));
 
         if (skb_is_nonlinear(skb)) {
                 /* we have to copy */
diff --git a/net/sunrpc/xprtrdma/svc_rdma_transport.c b/net/sunrpc/xprtrdma/svc_rdma_transport.c
index a385430c722a..ba1296d88de0 100644
--- a/net/sunrpc/xprtrdma/svc_rdma_transport.c
+++ b/net/sunrpc/xprtrdma/svc_rdma_transport.c
@@ -50,6 +50,7 @@
 #include <rdma/ib_verbs.h>
 #include <rdma/rdma_cm.h>
 #include <linux/sunrpc/svc_rdma.h>
+#include <linux/export.h>
 
 #define RPCDBG_FACILITY RPCDBG_SVCXPRT
 
diff --git a/net/sysctl_net.c b/net/sysctl_net.c
index ca84212cfbfe..e75813904f26 100644
--- a/net/sysctl_net.c
+++ b/net/sysctl_net.c
@@ -12,6 +12,7 @@
  */
 
 #include <linux/mm.h>
+#include <linux/export.h>
 #include <linux/sysctl.h>
 #include <linux/nsproxy.h>
 
diff --git a/net/tipc/bcast.c b/net/tipc/bcast.c
index 759b318b5ffb..28908f54459e 100644
--- a/net/tipc/bcast.c
+++ b/net/tipc/bcast.c
@@ -39,6 +39,7 @@
 #include "link.h"
 #include "port.h"
 #include "bcast.h"
+#include "name_distr.h"
 
 #define MAX_PKT_DEFAULT_MCAST 1500      /* bcast link max packet size (fixed) */
 
@@ -298,14 +299,9 @@ static void bclink_send_nack(struct tipc_node *n_ptr)
                 msg_set_bcgap_to(msg, n_ptr->bclink.gap_to);
                 msg_set_bcast_tag(msg, tipc_own_tag);
 
-                if (tipc_bearer_send(&bcbearer->bearer, buf, NULL)) {
-                        bcl->stats.sent_nacks++;
-                        buf_discard(buf);
-                } else {
-                        tipc_bearer_schedule(bcl->b_ptr, bcl);
-                        bcl->proto_msg_queue = buf;
-                        bcl->stats.bearer_congs++;
-                }
+                tipc_bearer_send(&bcbearer->bearer, buf, NULL);
+                bcl->stats.sent_nacks++;
+                buf_discard(buf);
 
                 /*
                  * Ensure we doesn't send another NACK msg to the node
@@ -426,20 +422,28 @@ int tipc_bclink_send_msg(struct sk_buff *buf)
 void tipc_bclink_recv_pkt(struct sk_buff *buf)
 {
         struct tipc_msg *msg = buf_msg(buf);
-        struct tipc_node *node = tipc_node_find(msg_prevnode(msg));
+        struct tipc_node *node;
         u32 next_in;
         u32 seqno;
         struct sk_buff *deferred;
 
-        if (unlikely(!node || !tipc_node_is_up(node) || !node->bclink.supported ||
-                     (msg_mc_netid(msg) != tipc_net_id))) {
-                buf_discard(buf);
-                return;
-        }
+        /* Screen out unwanted broadcast messages */
+
+        if (msg_mc_netid(msg) != tipc_net_id)
+                goto exit;
+
+        node = tipc_node_find(msg_prevnode(msg));
+        if (unlikely(!node))
+                goto exit;
+
+        tipc_node_lock(node);
+        if (unlikely(!node->bclink.supported))
+                goto unlock;
 
         if (unlikely(msg_user(msg) == BCAST_PROTOCOL)) {
+                if (msg_type(msg) != STATE_MSG)
+                        goto unlock;
                 if (msg_destnode(msg) == tipc_own_addr) {
-                        tipc_node_lock(node);
                         tipc_bclink_acknowledge(node, msg_bcast_ack(msg));
                         tipc_node_unlock(node);
                         spin_lock_bh(&bc_lock);
@@ -449,18 +453,18 @@ void tipc_bclink_recv_pkt(struct sk_buff *buf)
                                               msg_bcgap_to(msg));
                         spin_unlock_bh(&bc_lock);
                 } else {
+                        tipc_node_unlock(node);
                         tipc_bclink_peek_nack(msg_destnode(msg),
                                               msg_bcast_tag(msg),
                                               msg_bcgap_after(msg),
                                               msg_bcgap_to(msg));
                 }
-                buf_discard(buf);
-                return;
+                goto exit;
         }
 
-        tipc_node_lock(node);
+        /* Handle in-sequence broadcast message */
+
 receive:
-        deferred = node->bclink.deferred_head;
         next_in = mod(node->bclink.last_in + 1);
         seqno = msg_seqno(msg);
 
@@ -474,7 +478,10 @@ receive:
                 }
                 if (likely(msg_isdata(msg))) {
                         tipc_node_unlock(node);
-                        tipc_port_recv_mcast(buf, NULL);
+                        if (likely(msg_mcast(msg)))
+                                tipc_port_recv_mcast(buf, NULL);
+                        else
+                                buf_discard(buf);
                 } else if (msg_user(msg) == MSG_BUNDLER) {
                         bcl->stats.recv_bundles++;
                         bcl->stats.recv_bundled += msg_msgcnt(msg);
@@ -487,18 +494,22 @@ receive:
                                 bcl->stats.recv_fragmented++;
                         tipc_node_unlock(node);
                         tipc_net_route_msg(buf);
+                } else if (msg_user(msg) == NAME_DISTRIBUTOR) {
+                        tipc_node_unlock(node);
+                        tipc_named_recv(buf);
                 } else {
                         tipc_node_unlock(node);
-                        tipc_net_route_msg(buf);
+                        buf_discard(buf);
                 }
+                buf = NULL;
+                tipc_node_lock(node);
+                deferred = node->bclink.deferred_head;
                 if (deferred && (buf_seqno(deferred) == mod(next_in + 1))) {
-                        tipc_node_lock(node);
                         buf = deferred;
                         msg = buf_msg(buf);
                         node->bclink.deferred_head = deferred->next;
                         goto receive;
                 }
-                return;
         } else if (less(next_in, seqno)) {
                 u32 gap_after = node->bclink.gap_after;
                 u32 gap_to = node->bclink.gap_to;
@@ -513,6 +524,7 @@ receive:
                         else if (less(gap_after, seqno) && less(seqno, gap_to))
                                 node->bclink.gap_to = seqno;
                 }
+                buf = NULL;
                 if (bclink_ack_allowed(node->bclink.nack_sync)) {
                         if (gap_to != gap_after)
                                 bclink_send_nack(node);
@@ -520,9 +532,11 @@ receive:
                 }
         } else {
                 bcl->stats.duplicates++;
-                buf_discard(buf);
         }
+unlock:
         tipc_node_unlock(node);
+exit:
+        buf_discard(buf);
 }
 
 u32 tipc_bclink_acks_missing(struct tipc_node *n_ptr)
@@ -535,10 +549,11 @@ u32 tipc_bclink_acks_missing(struct tipc_node *n_ptr)
 /**
  * tipc_bcbearer_send - send a packet through the broadcast pseudo-bearer
  *
- * Send through as many bearers as necessary to reach all nodes
- * that support TIPC multicasting.
+ * Send packet over as many bearers as necessary to reach all nodes
+ * that have joined the broadcast link.
  *
- * Returns 0 if packet sent successfully, non-zero if not
+ * Returns 0 (packet sent successfully) under all circumstances,
+ * since the broadcast link's pseudo-bearer never blocks
  */
 
 static int tipc_bcbearer_send(struct sk_buff *buf,
@@ -547,7 +562,12 @@ static int tipc_bcbearer_send(struct sk_buff *buf,
 {
         int bp_index;
 
-        /* Prepare buffer for broadcasting (if first time trying to send it) */
+        /*
+         * Prepare broadcast link message for reliable transmission,
+         * if first time trying to send it;
+         * preparation is skipped for broadcast link protocol messages
+         * since they are sent in an unreliable manner and don't need it
+         */
 
         if (likely(!msg_non_seq(buf_msg(buf)))) {
                 struct tipc_msg *msg;
@@ -596,18 +616,12 @@ static int tipc_bcbearer_send(struct sk_buff *buf,
                 }
 
                 if (bcbearer->remains_new.count == 0)
-                        return 0;
+                        break;  /* all targets reached */
 
                 bcbearer->remains = bcbearer->remains_new;
         }
 
-        /*
-         * Unable to reach all targets (indicate success, since currently
-         * there isn't code in place to properly block & unblock the
-         * pseudo-bearer used by the broadcast link)
-         */
-
-        return TIPC_OK;
+        return 0;
 }
 
 /**
@@ -667,27 +681,6 @@ void tipc_bcbearer_sort(void)
         spin_unlock_bh(&bc_lock);
 }
 
-/**
- * tipc_bcbearer_push - resolve bearer congestion
- *
- * Forces bclink to push out any unsent packets, until all packets are gone
- * or congestion reoccurs.
- * No locks set when function called
- */
-
-void tipc_bcbearer_push(void)
-{
-        struct tipc_bearer *b_ptr;
-
-        spin_lock_bh(&bc_lock);
-        b_ptr = &bcbearer->bearer;
-        if (b_ptr->blocked) {
-                b_ptr->blocked = 0;
-                tipc_bearer_lock_push(b_ptr);
-        }
-        spin_unlock_bh(&bc_lock);
-}
-
 
 int tipc_bclink_stats(char *buf, const u32 buf_size)
 {
@@ -764,7 +757,7 @@ int tipc_bclink_init(void)
         bcbearer = kzalloc(sizeof(*bcbearer), GFP_ATOMIC);
         bclink = kzalloc(sizeof(*bclink), GFP_ATOMIC);
         if (!bcbearer || !bclink) {
-                warn("Multicast link creation failed, no memory\n");
+                warn("Broadcast link creation failed, no memory\n");
                 kfree(bcbearer);
                 bcbearer = NULL;
                 kfree(bclink);
@@ -775,7 +768,7 @@ int tipc_bclink_init(void)
         INIT_LIST_HEAD(&bcbearer->bearer.cong_links);
         bcbearer->bearer.media = &bcbearer->media;
         bcbearer->media.send_msg = tipc_bcbearer_send;
-        sprintf(bcbearer->media.name, "tipc-multicast");
+        sprintf(bcbearer->media.name, "tipc-broadcast");
 
         bcl = &bclink->link;
         INIT_LIST_HEAD(&bcl->waiting_ports);
diff --git a/net/tipc/bcast.h b/net/tipc/bcast.h
index 500c97f1c859..06740da5ae61 100644
--- a/net/tipc/bcast.h
+++ b/net/tipc/bcast.h
@@ -101,6 +101,5 @@ int  tipc_bclink_stats(char *stats_buf, const u32 buf_size);
 int  tipc_bclink_reset_stats(void);
 int  tipc_bclink_set_queue_limits(u32 limit);
 void tipc_bcbearer_sort(void);
-void tipc_bcbearer_push(void);
 
 #endif
diff --git a/net/tipc/bearer.c b/net/tipc/bearer.c
index 85eba9c08ee9..e2202de3d93e 100644
--- a/net/tipc/bearer.c
+++ b/net/tipc/bearer.c
@@ -385,13 +385,9 @@ static int bearer_push(struct tipc_bearer *b_ptr)
 
 void tipc_bearer_lock_push(struct tipc_bearer *b_ptr)
 {
-        int res;
-
         spin_lock_bh(&b_ptr->lock);
-        res = bearer_push(b_ptr);
+        bearer_push(b_ptr);
         spin_unlock_bh(&b_ptr->lock);
-        if (res)
-                tipc_bcbearer_push();
 }
 
 
@@ -608,6 +604,7 @@ int tipc_block_bearer(const char *name)
         info("Blocking bearer <%s>\n", name);
         spin_lock_bh(&b_ptr->lock);
         b_ptr->blocked = 1;
+        list_splice_init(&b_ptr->cong_links, &b_ptr->links);
         list_for_each_entry_safe(l_ptr, temp_l_ptr, &b_ptr->links, link_list) {
                 struct tipc_node *n_ptr = l_ptr->owner;
 
@@ -635,6 +632,7 @@ static void bearer_disable(struct tipc_bearer *b_ptr)
         spin_lock_bh(&b_ptr->lock);
         b_ptr->blocked = 1;
         b_ptr->media->disable_bearer(b_ptr);
+        list_splice_init(&b_ptr->cong_links, &b_ptr->links);
         list_for_each_entry_safe(l_ptr, temp_l_ptr, &b_ptr->links, link_list) {
                 tipc_link_delete(l_ptr);
         }
diff --git a/net/tipc/bearer.h b/net/tipc/bearer.h
index 5ad70eff1ebf..d696f9e414e3 100644
--- a/net/tipc/bearer.h
+++ b/net/tipc/bearer.h
@@ -39,8 +39,8 @@
 
 #include "bcast.h"
 
-#define MAX_BEARERS 8
-#define MAX_MEDIA 4
+#define MAX_BEARERS     2
+#define MAX_MEDIA       2
 
 /*
  * Identifiers of supported TIPC media types
diff --git a/net/tipc/config.h b/net/tipc/config.h
index 443159a166fd..80da6ebc2785 100644
--- a/net/tipc/config.h
+++ b/net/tipc/config.h
@@ -65,7 +65,6 @@ struct sk_buff *tipc_cfg_do_cmd(u32 orig_node, u16 cmd,
                                 const void *req_tlv_area, int req_tlv_space,
                                 int headroom);
 
-void tipc_cfg_link_event(u32 addr, char *name, int up);
 int  tipc_cfg_init(void);
 void tipc_cfg_stop(void);
 
diff --git a/net/tipc/core.c b/net/tipc/core.c
index 943b6af84265..c21331d58fdb 100644
--- a/net/tipc/core.c
+++ b/net/tipc/core.c
@@ -34,6 +34,8 @@
  * POSSIBILITY OF SUCH DAMAGE.
  */
 
+#include <linux/module.h>
+
 #include "core.h"
 #include "ref.h"
 #include "name_table.h"
diff --git a/net/tipc/discover.c b/net/tipc/discover.c
index 0987933155b9..f2fb96e86ee8 100644
--- a/net/tipc/discover.c
+++ b/net/tipc/discover.c
@@ -159,12 +159,6 @@ void tipc_disc_recv_msg(struct sk_buff *buf, struct tipc_bearer *b_ptr)
         }
         tipc_node_lock(n_ptr);
 
-        /* Don't talk to neighbor during cleanup after last session */
-        if (n_ptr->cleanup_required) {
-                tipc_node_unlock(n_ptr);
-                return;
-        }
-
         link = n_ptr->links[b_ptr->identity];
 
         /* Create a link endpoint for this bearer, if necessary */
diff --git a/net/tipc/eth_media.c b/net/tipc/eth_media.c
index b69092eb95d8..e728d4ce2a1b 100644
--- a/net/tipc/eth_media.c
+++ b/net/tipc/eth_media.c
@@ -2,7 +2,7 @@
  * net/tipc/eth_media.c: Ethernet bearer support for TIPC
  *
  * Copyright (c) 2001-2007, Ericsson AB
- * Copyright (c) 2005-2007, Wind River Systems
+ * Copyright (c) 2005-2008, 2011, Wind River Systems
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
@@ -37,7 +37,7 @@
 #include "core.h"
 #include "bearer.h"
 
-#define MAX_ETH_BEARERS         2
+#define MAX_ETH_BEARERS         MAX_BEARERS
 #define ETH_LINK_PRIORITY       TIPC_DEF_LINK_PRI
 #define ETH_LINK_TOLERANCE      TIPC_DEF_LINK_TOL
 #define ETH_LINK_WINDOW         TIPC_DEF_LINK_WIN
@@ -144,31 +144,27 @@ static int enable_bearer(struct tipc_bearer *tb_ptr)
 
         /* Find device with specified name */
 
+        read_lock(&dev_base_lock);
         for_each_netdev(&init_net, pdev) {
                 if (!strncmp(pdev->name, driver_name, IFNAMSIZ)) {
                         dev = pdev;
+                        dev_hold(dev);
                         break;
                 }
         }
+        read_unlock(&dev_base_lock);
         if (!dev)
                 return -ENODEV;
 
-        /* Find Ethernet bearer for device (or create one) */
-
-        while ((eb_ptr != stop) && eb_ptr->dev && (eb_ptr->dev != dev))
-                eb_ptr++;
-        if (eb_ptr == stop)
-                return -EDQUOT;
-        if (!eb_ptr->dev) {
-                eb_ptr->dev = dev;
-                eb_ptr->tipc_packet_type.type = htons(ETH_P_TIPC);
-                eb_ptr->tipc_packet_type.dev = dev;
-                eb_ptr->tipc_packet_type.func = recv_msg;
-                eb_ptr->tipc_packet_type.af_packet_priv = eb_ptr;
-                INIT_LIST_HEAD(&(eb_ptr->tipc_packet_type.list));
-                dev_hold(dev);
-                dev_add_pack(&eb_ptr->tipc_packet_type);
-        }
+        /* Create Ethernet bearer for device */
+
+        eb_ptr->dev = dev;
+        eb_ptr->tipc_packet_type.type = htons(ETH_P_TIPC);
+        eb_ptr->tipc_packet_type.dev = dev;
+        eb_ptr->tipc_packet_type.func = recv_msg;
+        eb_ptr->tipc_packet_type.af_packet_priv = eb_ptr;
+        INIT_LIST_HEAD(&(eb_ptr->tipc_packet_type.list));
+        dev_add_pack(&eb_ptr->tipc_packet_type);
 
         /* Associate TIPC bearer with Ethernet bearer */
 
diff --git a/net/tipc/link.c b/net/tipc/link.c
index f89570c54f54..ae98a72da11a 100644
--- a/net/tipc/link.c
+++ b/net/tipc/link.c
@@ -332,15 +332,16 @@ struct link *tipc_link_create(struct tipc_node *n_ptr,
 
         l_ptr->addr = peer;
         if_name = strchr(b_ptr->name, ':') + 1;
-        sprintf(l_ptr->name, "%u.%u.%u:%s-%u.%u.%u:",
+        sprintf(l_ptr->name, "%u.%u.%u:%s-%u.%u.%u:unknown",
                 tipc_zone(tipc_own_addr), tipc_cluster(tipc_own_addr),
                 tipc_node(tipc_own_addr),
                 if_name,
                 tipc_zone(peer), tipc_cluster(peer), tipc_node(peer));
-                /* note: peer i/f is appended to link name by reset/activate */
+                /* note: peer i/f name is updated by reset/activate message */
         memcpy(&l_ptr->media_addr, media_addr, sizeof(*media_addr));
         l_ptr->owner = n_ptr;
         l_ptr->checkpoint = 1;
+        l_ptr->peer_session = INVALID_SESSION;
         l_ptr->b_ptr = b_ptr;
         link_set_supervision_props(l_ptr, b_ptr->media->tolerance);
         l_ptr->state = RESET_UNKNOWN;
@@ -536,9 +537,6 @@ void tipc_link_stop(struct link *l_ptr)
         l_ptr->proto_msg_queue = NULL;
 }
 
-/* LINK EVENT CODE IS NOT SUPPORTED AT PRESENT */
-#define link_send_event(fcn, l_ptr, up) do { } while (0)
-
 void tipc_link_reset(struct link *l_ptr)
 {
         struct sk_buff *buf;
@@ -596,10 +594,6 @@ void tipc_link_reset(struct link *l_ptr)
         l_ptr->fsm_msg_cnt = 0;
         l_ptr->stale_count = 0;
         link_reset_statistics(l_ptr);
-
-        link_send_event(tipc_cfg_link_event, l_ptr, 0);
-        if (!in_own_cluster(l_ptr->addr))
-                link_send_event(tipc_disc_link_event, l_ptr, 0);
 }
 
 
@@ -608,9 +602,6 @@ static void link_activate(struct link *l_ptr)
         l_ptr->next_in_no = l_ptr->stats.recv_info = 1;
         tipc_node_link_up(l_ptr->owner, l_ptr);
         tipc_bearer_add_dest(l_ptr->b_ptr, l_ptr->addr);
-        link_send_event(tipc_cfg_link_event, l_ptr, 1);
-        if (!in_own_cluster(l_ptr->addr))
-                link_send_event(tipc_disc_link_event, l_ptr, 1);
 }
 
 /**
@@ -985,6 +976,51 @@ int tipc_link_send(struct sk_buff *buf, u32 dest, u32 selector)
 }
 
 /*
+ * tipc_link_send_names - send name table entries to new neighbor
+ *
+ * Send routine for bulk delivery of name table messages when contact
+ * with a new neighbor occurs. No link congestion checking is performed
+ * because name table messages *must* be delivered. The messages must be
+ * small enough not to require fragmentation.
+ * Called without any locks held.
+ */
+
+void tipc_link_send_names(struct list_head *message_list, u32 dest)
+{
+        struct tipc_node *n_ptr;
+        struct link *l_ptr;
+        struct sk_buff *buf;
+        struct sk_buff *temp_buf;
+
+        if (list_empty(message_list))
+                return;
+
+        read_lock_bh(&tipc_net_lock);
+        n_ptr = tipc_node_find(dest);
+        if (n_ptr) {
+                tipc_node_lock(n_ptr);
+                l_ptr = n_ptr->active_links[0];
+                if (l_ptr) {
+                        /* convert circular list to linear list */
+                        ((struct sk_buff *)message_list->prev)->next = NULL;
+                        link_add_chain_to_outqueue(l_ptr,
+                                (struct sk_buff *)message_list->next, 0);
+                        tipc_link_push_queue(l_ptr);
+                        INIT_LIST_HEAD(message_list);
+                }
+                tipc_node_unlock(n_ptr);
+        }
+        read_unlock_bh(&tipc_net_lock);
+
+        /* discard the messages if they couldn't be sent */
+
+        list_for_each_safe(buf, temp_buf, ((struct sk_buff *)message_list)) {
+                list_del((struct list_head *)buf);
+                buf_discard(buf);
+        }
+}
+
+/*
  * link_send_buf_fast: Entry for data messages where the
  * destination link is known and the header is complete,
  * inclusive total message length. Very time critical.
@@ -1031,9 +1067,6 @@ int tipc_send_buf_fast(struct sk_buff *buf, u32 destnode)
         u32 selector = msg_origport(buf_msg(buf)) & 1;
         u32 dummy;
 
-        if (destnode == tipc_own_addr)
-                return tipc_port_recv_msg(buf);
-
         read_lock_bh(&tipc_net_lock);
         n_ptr = tipc_node_find(destnode);
         if (likely(n_ptr)) {
@@ -1658,19 +1691,12 @@ void tipc_recv_msg(struct sk_buff *head, struct tipc_bearer *b_ptr)
                         continue;
                 }
 
+                /* Discard unicast link messages destined for another node */
+
                 if (unlikely(!msg_short(msg) &&
                              (msg_destnode(msg) != tipc_own_addr)))
                         goto cont;
 
-                /* Discard non-routeable messages destined for another node */
-
-                if (unlikely(!msg_isdata(msg) &&
-                             (msg_destnode(msg) != tipc_own_addr))) {
-                        if ((msg_user(msg) != CONN_MANAGER) &&
-                            (msg_user(msg) != MSG_FRAGMENTER))
-                                goto cont;
-                }
-
                 /* Locate neighboring node that sent message */
 
                 n_ptr = tipc_node_find(msg_prevnode(msg));
@@ -1678,17 +1704,24 @@ void tipc_recv_msg(struct sk_buff *head, struct tipc_bearer *b_ptr)
                         goto cont;
                 tipc_node_lock(n_ptr);
 
-                /* Don't talk to neighbor during cleanup after last session */
+                /* Locate unicast link endpoint that should handle message */
 
-                if (n_ptr->cleanup_required) {
+                l_ptr = n_ptr->links[b_ptr->identity];
+                if (unlikely(!l_ptr)) {
                         tipc_node_unlock(n_ptr);
                         goto cont;
                 }
 
-                /* Locate unicast link endpoint that should handle message */
+                /* Verify that communication with node is currently allowed */
 
-                l_ptr = n_ptr->links[b_ptr->identity];
-                if (unlikely(!l_ptr)) {
+                if ((n_ptr->block_setup & WAIT_PEER_DOWN) &&
+                        msg_user(msg) == LINK_PROTOCOL &&
+                        (msg_type(msg) == RESET_MSG ||
+                                        msg_type(msg) == ACTIVATE_MSG) &&
+                        !msg_redundant_link(msg))
+                        n_ptr->block_setup &= ~WAIT_PEER_DOWN;
+
+                if (n_ptr->block_setup) {
                         tipc_node_unlock(n_ptr);
                         goto cont;
                 }
@@ -1923,6 +1956,12 @@ void tipc_link_send_proto_msg(struct link *l_ptr, u32 msg_typ, int probe_msg,
 
         if (link_blocked(l_ptr))
                 return;
+
+        /* Abort non-RESET send if communication with node is prohibited */
+
+        if ((l_ptr->owner->block_setup) && (msg_typ != RESET_MSG))
+                return;
+
         msg_set_type(msg, msg_typ);
         msg_set_net_plane(msg, l_ptr->b_ptr->net_plane);
         msg_set_bcast_ack(msg, mod(l_ptr->owner->bclink.last_in));
@@ -2051,9 +2090,19 @@ static void link_recv_proto_msg(struct link *l_ptr, struct sk_buff *buf)
         case RESET_MSG:
                 if (!link_working_unknown(l_ptr) &&
                     (l_ptr->peer_session != INVALID_SESSION)) {
-                        if (msg_session(msg) == l_ptr->peer_session)
-                                break; /* duplicate: ignore */
+                        if (less_eq(msg_session(msg), l_ptr->peer_session))
+                                break; /* duplicate or old reset: ignore */
+                }
+
+                if (!msg_redundant_link(msg) && (link_working_working(l_ptr) ||
+                                link_working_unknown(l_ptr))) {
+                        /*
+                         * peer has lost contact -- don't allow peer's links
+                         * to reactivate before we recognize loss & clean up
+                         */
+                        l_ptr->owner->block_setup = WAIT_NODE_DOWN;
                 }
+
                 /* fall thru' */
         case ACTIVATE_MSG:
                 /* Update link settings according other endpoint's values */
diff --git a/net/tipc/link.h b/net/tipc/link.h
index 74fbecab1ea0..e56cb532913e 100644
--- a/net/tipc/link.h
+++ b/net/tipc/link.h
@@ -223,6 +223,7 @@ struct sk_buff *tipc_link_cmd_show_stats(const void *req_tlv_area, int req_tlv_s
 struct sk_buff *tipc_link_cmd_reset_stats(const void *req_tlv_area, int req_tlv_space);
 void tipc_link_reset(struct link *l_ptr);
 int tipc_link_send(struct sk_buff *buf, u32 dest, u32 selector);
+void tipc_link_send_names(struct list_head *message_list, u32 dest);
 int tipc_link_send_buf(struct link *l_ptr, struct sk_buff *buf);
 u32 tipc_link_get_max_pkt(u32 dest, u32 selector);
 int tipc_link_send_sections_fast(struct tipc_port *sender,
diff --git a/net/tipc/name_distr.c b/net/tipc/name_distr.c
index cd356e504332..b7ca1bd7b151 100644
--- a/net/tipc/name_distr.c
+++ b/net/tipc/name_distr.c
@@ -173,18 +173,40 @@ void tipc_named_withdraw(struct publication *publ)
  * tipc_named_node_up - tell specified node about all publications by this node
  */
 
-void tipc_named_node_up(unsigned long node)
+void tipc_named_node_up(unsigned long nodearg)
 {
+        struct tipc_node *n_ptr;
+        struct link *l_ptr;
         struct publication *publ;
         struct distr_item *item = NULL;
         struct sk_buff *buf = NULL;
+        struct list_head message_list;
+        u32 node = (u32)nodearg;
         u32 left = 0;
         u32 rest;
-        u32 max_item_buf;
+        u32 max_item_buf = 0;
+
+        /* compute maximum amount of publication data to send per message */
+
+        read_lock_bh(&tipc_net_lock);
+        n_ptr = tipc_node_find(node);
+        if (n_ptr) {
+                tipc_node_lock(n_ptr);
+                l_ptr = n_ptr->active_links[0];
+                if (l_ptr)
+                        max_item_buf = ((l_ptr->max_pkt - INT_H_SIZE) /
+                                ITEM_SIZE) * ITEM_SIZE;
+                tipc_node_unlock(n_ptr);
+        }
+        read_unlock_bh(&tipc_net_lock);
+        if (!max_item_buf)
+                return;
+
+        /* create list of publication messages, then send them as a unit */
+
+        INIT_LIST_HEAD(&message_list);
 
         read_lock_bh(&tipc_nametbl_lock);
-        max_item_buf = TIPC_MAX_USER_MSG_SIZE / ITEM_SIZE;
-        max_item_buf *= ITEM_SIZE;
         rest = publ_cnt * ITEM_SIZE;
 
         list_for_each_entry(publ, &publ_root, local_list) {
@@ -202,13 +224,14 @@ void tipc_named_node_up(unsigned long node)
                 item++;
                 left -= ITEM_SIZE;
                 if (!left) {
-                        msg_set_link_selector(buf_msg(buf), node);
-                        tipc_link_send(buf, node, node);
+                        list_add_tail((struct list_head *)buf, &message_list);
                         buf = NULL;
                 }
         }
 exit:
         read_unlock_bh(&tipc_nametbl_lock);
+
+        tipc_link_send_names(&message_list, (u32)node);
 }
 
 /**
diff --git a/net/tipc/net.c b/net/tipc/net.c
index 68b3dd637291..fafef6c3c0f6 100644
--- a/net/tipc/net.c
+++ b/net/tipc/net.c
@@ -141,17 +141,6 @@ void tipc_net_route_msg(struct sk_buff *buf)
                 return;
         msg = buf_msg(buf);
 
-        msg_incr_reroute_cnt(msg);
-        if (msg_reroute_cnt(msg) > 6) {
-                if (msg_errcode(msg)) {
-                        buf_discard(buf);
-                } else {
-                        tipc_reject_msg(buf, msg_destport(msg) ?
-                                        TIPC_ERR_NO_PORT : TIPC_ERR_NO_NAME);
-                }
-                return;
-        }
-
         /* Handle message for this node */
         dnode = msg_short(msg) ? tipc_own_addr : msg_destnode(msg);
         if (tipc_in_scope(dnode, tipc_own_addr)) {
diff --git a/net/tipc/node.c b/net/tipc/node.c
index 2d106ef4fa4c..27b4bb0cca6c 100644
--- a/net/tipc/node.c
+++ b/net/tipc/node.c
@@ -112,6 +112,7 @@ struct tipc_node *tipc_node_create(u32 addr)
                         break;
         }
         list_add_tail(&n_ptr->list, &temp_node->list);
+        n_ptr->block_setup = WAIT_PEER_DOWN;
 
         tipc_num_nodes++;
 
@@ -312,7 +313,7 @@ static void node_established_contact(struct tipc_node *n_ptr)
         }
 }
 
-static void node_cleanup_finished(unsigned long node_addr)
+static void node_name_purge_complete(unsigned long node_addr)
 {
         struct tipc_node *n_ptr;
 
@@ -320,7 +321,7 @@ static void node_cleanup_finished(unsigned long node_addr)
         n_ptr = tipc_node_find(node_addr);
         if (n_ptr) {
                 tipc_node_lock(n_ptr);
-                n_ptr->cleanup_required = 0;
+                n_ptr->block_setup &= ~WAIT_NAMES_GONE;
                 tipc_node_unlock(n_ptr);
         }
         read_unlock_bh(&tipc_net_lock);
@@ -331,28 +332,32 @@ static void node_lost_contact(struct tipc_node *n_ptr)
         char addr_string[16];
         u32 i;
 
-        /* Clean up broadcast reception remains */
-        n_ptr->bclink.gap_after = n_ptr->bclink.gap_to = 0;
-        while (n_ptr->bclink.deferred_head) {
-                struct sk_buff *buf = n_ptr->bclink.deferred_head;
-                n_ptr->bclink.deferred_head = buf->next;
-                buf_discard(buf);
-        }
-        if (n_ptr->bclink.defragm) {
-                buf_discard(n_ptr->bclink.defragm);
-                n_ptr->bclink.defragm = NULL;
-        }
+        info("Lost contact with %s\n",
+             tipc_addr_string_fill(addr_string, n_ptr->addr));
+
+        /* Flush broadcast link info associated with lost node */
 
         if (n_ptr->bclink.supported) {
+                n_ptr->bclink.gap_after = n_ptr->bclink.gap_to = 0;
+                while (n_ptr->bclink.deferred_head) {
+                        struct sk_buff *buf = n_ptr->bclink.deferred_head;
+                        n_ptr->bclink.deferred_head = buf->next;
+                        buf_discard(buf);
+                }
+
+                if (n_ptr->bclink.defragm) {
+                        buf_discard(n_ptr->bclink.defragm);
+                        n_ptr->bclink.defragm = NULL;
+                }
+
+                tipc_nmap_remove(&tipc_bcast_nmap, n_ptr->addr);
                 tipc_bclink_acknowledge(n_ptr,
                                         mod(n_ptr->bclink.acked + 10000));
-                tipc_nmap_remove(&tipc_bcast_nmap, n_ptr->addr);
                 if (n_ptr->addr < tipc_own_addr)
                         tipc_own_tag--;
-        }
 
-        info("Lost contact with %s\n",
-             tipc_addr_string_fill(addr_string, n_ptr->addr));
+                n_ptr->bclink.supported = 0;
+        }
 
         /* Abort link changeover */
         for (i = 0; i < MAX_BEARERS; i++) {
@@ -367,10 +372,10 @@ static void node_lost_contact(struct tipc_node *n_ptr)
         /* Notify subscribers */
         tipc_nodesub_notify(n_ptr);
 
-        /* Prevent re-contact with node until all cleanup is done */
+        /* Prevent re-contact with node until cleanup is done */
 
-        n_ptr->cleanup_required = 1;
-        tipc_k_signal((Handler)node_cleanup_finished, n_ptr->addr);
+        n_ptr->block_setup = WAIT_PEER_DOWN | WAIT_NAMES_GONE;
+        tipc_k_signal((Handler)node_name_purge_complete, n_ptr->addr);
 }
 
 struct sk_buff *tipc_node_get_nodes(const void *req_tlv_area, int req_tlv_space)
diff --git a/net/tipc/node.h b/net/tipc/node.h
index 5c61afc7a0b9..4f15cb40aaa4 100644
--- a/net/tipc/node.h
+++ b/net/tipc/node.h
@@ -42,6 +42,12 @@
 #include "net.h"
 #include "bearer.h"
 
+/* Flags used to block (re)establishment of contact with a neighboring node */
+
+#define WAIT_PEER_DOWN  0x0001  /* wait to see that peer's links are down */
+#define WAIT_NAMES_GONE 0x0002  /* wait for peer's publications to be purged */
+#define WAIT_NODE_DOWN  0x0004  /* wait until peer node is declared down */
+
 /**
  * struct tipc_node - TIPC node structure
  * @addr: network address of node
@@ -52,7 +58,7 @@
  * @active_links: pointers to active links to node
  * @links: pointers to all links to node
  * @working_links: number of working links to node (both active and standby)
- * @cleanup_required: non-zero if cleaning up after a prior loss of contact
+ * @block_setup: bit mask of conditions preventing link establishment to node
  * @link_cnt: number of links to node
  * @permit_changeover: non-zero if node has redundant links to this system
  * @bclink: broadcast-related info
@@ -77,7 +83,7 @@ struct tipc_node {
         struct link *links[MAX_BEARERS];
         int link_cnt;
         int working_links;
-        int cleanup_required;
+        int block_setup;
         int permit_changeover;
         struct {
                 int supported;
diff --git a/net/tipc/socket.c b/net/tipc/socket.c
index adb2eff4a102..42b8324ff2ee 100644
--- a/net/tipc/socket.c
+++ b/net/tipc/socket.c
@@ -34,6 +34,7 @@
  * POSSIBILITY OF SUCH DAMAGE.
  */
 
+#include <linux/export.h>
 #include <net/sock.h>
 
 #include "core.h"
@@ -49,7 +50,7 @@ struct tipc_sock {
         struct sock sk;
         struct tipc_port *p;
         struct tipc_portid peer_name;
-        long conn_timeout;
+        unsigned int conn_timeout;
 };
 
 #define tipc_sk(sk) ((struct tipc_sock *)(sk))
@@ -231,7 +232,7 @@ static int tipc_create(struct net *net, struct socket *sock, int protocol,
         sock_init_data(sock, sk);
         sk->sk_backlog_rcv = backlog_rcv;
         tipc_sk(sk)->p = tp_ptr;
-        tipc_sk(sk)->conn_timeout = msecs_to_jiffies(CONN_TIMEOUT_DEFAULT);
+        tipc_sk(sk)->conn_timeout = CONN_TIMEOUT_DEFAULT;
 
         spin_unlock_bh(tp_ptr->lock);
 
@@ -525,6 +526,7 @@ static int send_msg(struct kiocb *iocb, struct socket *sock,
         struct tipc_port *tport = tipc_sk_port(sk);
         struct sockaddr_tipc *dest = (struct sockaddr_tipc *)m->msg_name;
         int needs_conn;
+        long timeout_val;
         int res = -EINVAL;
 
         if (unlikely(!dest))
@@ -564,6 +566,8 @@ static int send_msg(struct kiocb *iocb, struct socket *sock,
                 reject_rx_queue(sk);
         }
 
+        timeout_val = sock_sndtimeo(sk, m->msg_flags & MSG_DONTWAIT);
+
         do {
                 if (dest->addrtype == TIPC_ADDR_NAME) {
                         res = dest_name_check(dest, m);
@@ -600,16 +604,14 @@ static int send_msg(struct kiocb *iocb, struct socket *sock,
                                 sock->state = SS_CONNECTING;
                         break;
                 }
-                if (m->msg_flags & MSG_DONTWAIT) {
-                        res = -EWOULDBLOCK;
+                if (timeout_val <= 0L) {
+                        res = timeout_val ? timeout_val : -EWOULDBLOCK;
                         break;
                 }
                 release_sock(sk);
-                res = wait_event_interruptible(*sk_sleep(sk),
-                                               !tport->congested);
+                timeout_val = wait_event_interruptible_timeout(*sk_sleep(sk),
+                                               !tport->congested, timeout_val);
                 lock_sock(sk);
-                if (res)
-                        break;
         } while (1);
 
 exit:
@@ -636,6 +638,7 @@ static int send_packet(struct kiocb *iocb, struct socket *sock,
         struct sock *sk = sock->sk;
         struct tipc_port *tport = tipc_sk_port(sk);
         struct sockaddr_tipc *dest = (struct sockaddr_tipc *)m->msg_name;
+        long timeout_val;
         int res;
 
         /* Handle implied connection establishment */
@@ -650,6 +653,8 @@ static int send_packet(struct kiocb *iocb, struct socket *sock,
         if (iocb)
                 lock_sock(sk);
 
+        timeout_val = sock_sndtimeo(sk, m->msg_flags & MSG_DONTWAIT);
+
         do {
                 if (unlikely(sock->state != SS_CONNECTED)) {
                         if (sock->state == SS_DISCONNECTING)
@@ -663,16 +668,14 @@ static int send_packet(struct kiocb *iocb, struct socket *sock,
                                 total_len);
                 if (likely(res != -ELINKCONG))
                         break;
-                if (m->msg_flags & MSG_DONTWAIT) {
-                        res = -EWOULDBLOCK;
+                if (timeout_val <= 0L) {
+                        res = timeout_val ? timeout_val : -EWOULDBLOCK;
                         break;
                 }
                 release_sock(sk);
-                res = wait_event_interruptible(*sk_sleep(sk),
-                        (!tport->congested || !tport->connected));
+                timeout_val = wait_event_interruptible_timeout(*sk_sleep(sk),
+                        (!tport->congested || !tport->connected), timeout_val);
                 lock_sock(sk);
-                if (res)
-                        break;
         } while (1);
 
         if (iocb)
@@ -1369,7 +1372,7 @@ static int connect(struct socket *sock, struct sockaddr *dest, int destlen,
         struct msghdr m = {NULL,};
         struct sk_buff *buf;
         struct tipc_msg *msg;
-        long timeout;
+        unsigned int timeout;
         int res;
 
         lock_sock(sk);
@@ -1434,7 +1437,8 @@ static int connect(struct socket *sock, struct sockaddr *dest, int destlen,
         res = wait_event_interruptible_timeout(*sk_sleep(sk),
                         (!skb_queue_empty(&sk->sk_receive_queue) ||
                         (sock->state != SS_CONNECTING)),
-                        timeout ? timeout : MAX_SCHEDULE_TIMEOUT);
+                        timeout ? (long)msecs_to_jiffies(timeout)
+                                : MAX_SCHEDULE_TIMEOUT);
         lock_sock(sk);
 
         if (res > 0) {
@@ -1480,9 +1484,7 @@ static int listen(struct socket *sock, int len)
 
         lock_sock(sk);
 
-        if (sock->state == SS_READY)
-                res = -EOPNOTSUPP;
-        else if (sock->state != SS_UNCONNECTED)
+        if (sock->state != SS_UNCONNECTED)
                 res = -EINVAL;
         else {
                 sock->state = SS_LISTENING;
@@ -1510,10 +1512,6 @@ static int accept(struct socket *sock, struct socket *new_sock, int flags)
 
         lock_sock(sk);
 
-        if (sock->state == SS_READY) {
-                res = -EOPNOTSUPP;
-                goto exit;
-        }
         if (sock->state != SS_LISTENING) {
                 res = -EINVAL;
                 goto exit;
@@ -1696,7 +1694,7 @@ static int setsockopt(struct socket *sock,
                 res = tipc_set_portunreturnable(tport->ref, value);
                 break;
         case TIPC_CONN_TIMEOUT:
-                tipc_sk(sk)->conn_timeout = msecs_to_jiffies(value);
+                tipc_sk(sk)->conn_timeout = value;
                 /* no need to set "res", since already 0 at this point */
                 break;
         default:
@@ -1752,7 +1750,7 @@ static int getsockopt(struct socket *sock,
                 res = tipc_portunreturnable(tport->ref, &value);
                 break;
         case TIPC_CONN_TIMEOUT:
-                value = jiffies_to_msecs(tipc_sk(sk)->conn_timeout);
+                value = tipc_sk(sk)->conn_timeout;
                 /* no need to set "res", since already 0 at this point */
                 break;
         case TIPC_NODE_RECVQ_DEPTH:
@@ -1790,11 +1788,11 @@ static const struct proto_ops msg_ops = {
         .bind           = bind,
         .connect        = connect,
         .socketpair     = sock_no_socketpair,
-        .accept         = accept,
+        .accept         = sock_no_accept,
         .getname        = get_name,
         .poll           = poll,
         .ioctl          = sock_no_ioctl,
-        .listen         = listen,
+        .listen         = sock_no_listen,
         .shutdown       = shutdown,
         .setsockopt     = setsockopt,
         .getsockopt     = getsockopt,
diff --git a/net/tipc/subscr.c b/net/tipc/subscr.c
index 6cf726863485..198371723b41 100644
--- a/net/tipc/subscr.c
+++ b/net/tipc/subscr.c
@@ -151,7 +151,7 @@ void tipc_subscr_report_overlap(struct subscription *sub,
         if (!must && !(sub->filter & TIPC_SUB_PORTS))
                 return;
 
-        sub->event_cb(sub, found_lower, found_upper, event, port_ref, node);
+        subscr_send_event(sub, found_lower, found_upper, event, port_ref, node);
 }
 
 /**
@@ -365,7 +365,6 @@ static struct subscription *subscr_subscribe(struct tipc_subscr *s,
                 subscr_terminate(subscriber);
                 return NULL;
         }
-        sub->event_cb = subscr_send_event;
         INIT_LIST_HEAD(&sub->nameseq_list);
         list_add(&sub->subscription_list, &subscriber->subscription_list);
         sub->server_ref = subscriber->port_ref;
diff --git a/net/tipc/subscr.h b/net/tipc/subscr.h
index 45d89bf4d202..4b06ef6f8401 100644
--- a/net/tipc/subscr.h
+++ b/net/tipc/subscr.h
@@ -39,16 +39,11 @@
 
 struct subscription;
 
-typedef void (*tipc_subscr_event) (struct subscription *sub,
-                                   u32 found_lower, u32 found_upper,
-                                   u32 event, u32 port_ref, u32 node);
-
 /**
  * struct subscription - TIPC network topology subscription object
  * @seq: name sequence associated with subscription
  * @timeout: duration of subscription (in ms)
  * @filter: event filtering to be done for subscription
- * @event_cb: routine invoked when a subscription event is detected
  * @timer: timer governing subscription duration (optional)
  * @nameseq_list: adjacent subscriptions in name sequence's subscription list
  * @subscription_list: adjacent subscriptions in subscriber's subscription list
@@ -61,7 +56,6 @@ struct subscription {
         struct tipc_name_seq seq;
         u32 timeout;
         u32 filter;
-        tipc_subscr_event event_cb;
         struct timer_list timer;
         struct list_head nameseq_list;
         struct list_head subscription_list;
diff --git a/net/unix/af_unix.c b/net/unix/af_unix.c
index ec68e1c05b85..466fbcc5cf77 100644
--- a/net/unix/af_unix.c
+++ b/net/unix/af_unix.c
@@ -1381,8 +1381,10 @@ static int unix_attach_fds(struct scm_cookie *scm, struct sk_buff *skb)
 static int unix_scm_to_skb(struct scm_cookie *scm, struct sk_buff *skb, bool send_fds)
 {
         int err = 0;
+
         UNIXCB(skb).pid  = get_pid(scm->pid);
-        UNIXCB(skb).cred = get_cred(scm->cred);
+        if (scm->cred)
+                UNIXCB(skb).cred = get_cred(scm->cred);
         UNIXCB(skb).fp = NULL;
         if (scm->fp && send_fds)
                 err = unix_attach_fds(scm, skb);
@@ -1392,6 +1394,24 @@ static int unix_scm_to_skb(struct scm_cookie *scm, struct sk_buff *skb, bool sen
 }
 
 /*
+ * Some apps rely on write() giving SCM_CREDENTIALS
+ * We include credentials if source or destination socket
+ * asserted SOCK_PASSCRED.
+ */
+static void maybe_add_creds(struct sk_buff *skb, const struct socket *sock,
+                            const struct sock *other)
+{
+        if (UNIXCB(skb).cred)
+                return;
+        if (test_bit(SOCK_PASSCRED, &sock->flags) ||
+            !other->sk_socket ||
+            test_bit(SOCK_PASSCRED, &other->sk_socket->flags)) {
+                UNIXCB(skb).pid  = get_pid(task_tgid(current));
+                UNIXCB(skb).cred = get_current_cred();
+        }
+}
+
+/*
  *      Send AF_UNIX data.
  */
 
@@ -1538,6 +1558,7 @@ restart:
 
         if (sock_flag(other, SOCK_RCVTSTAMP))
                 __net_timestamp(skb);
+        maybe_add_creds(skb, sock, other);
         skb_queue_tail(&other->sk_receive_queue, skb);
         if (max_level > unix_sk(other)->recursion_level)
                 unix_sk(other)->recursion_level = max_level;
@@ -1652,6 +1673,7 @@ static int unix_stream_sendmsg(struct kiocb *kiocb, struct socket *sock,
                     (other->sk_shutdown & RCV_SHUTDOWN))
                         goto pipe_err_free;
 
+                maybe_add_creds(skb, sock, other);
                 skb_queue_tail(&other->sk_receive_queue, skb);
                 if (max_level > unix_sk(other)->recursion_level)
                         unix_sk(other)->recursion_level = max_level;
diff --git a/net/wanrouter/wanproc.c b/net/wanrouter/wanproc.c
index f346395314ba..c43612ee96bb 100644
--- a/net/wanrouter/wanproc.c
+++ b/net/wanrouter/wanproc.c
@@ -81,7 +81,6 @@ static struct proc_dir_entry *proc_router;
  *      Iterator
  */
 static void *r_start(struct seq_file *m, loff_t *pos)
-        __acquires(kernel_lock)
 {
         struct wan_device *wandev;
         loff_t l = *pos;
@@ -103,7 +102,6 @@ static void *r_next(struct seq_file *m, void *v, loff_t *pos)
 }
 
 static void r_stop(struct seq_file *m, void *v)
-        __releases(kernel_lock)
 {
         mutex_unlock(&config_mutex);
 }
diff --git a/net/wimax/op-msg.c b/net/wimax/op-msg.c
index d5b7c3779c43..0694d62e4dbc 100644
--- a/net/wimax/op-msg.c
+++ b/net/wimax/op-msg.c
@@ -77,6 +77,7 @@
 #include <linux/netdevice.h>
 #include <linux/wimax.h>
 #include <linux/security.h>
+#include <linux/export.h>
 #include "wimax-internal.h"
 
 
diff --git a/net/wimax/op-reset.c b/net/wimax/op-reset.c
index 68bedf3e5443..7ceffe39d70e 100644
--- a/net/wimax/op-reset.c
+++ b/net/wimax/op-reset.c
@@ -32,6 +32,7 @@
 #include <net/genetlink.h>
 #include <linux/wimax.h>
 #include <linux/security.h>
+#include <linux/export.h>
 #include "wimax-internal.h"
 
 #define D_SUBMODULE op_reset
diff --git a/net/wimax/op-rfkill.c b/net/wimax/op-rfkill.c
index 2609e445fe7d..7ab60babdd22 100644
--- a/net/wimax/op-rfkill.c
+++ b/net/wimax/op-rfkill.c
@@ -65,6 +65,7 @@
 #include <linux/wimax.h>
 #include <linux/security.h>
 #include <linux/rfkill.h>
+#include <linux/export.h>
 #include "wimax-internal.h"
 
 #define D_SUBMODULE op_rfkill
diff --git a/net/wimax/stack.c b/net/wimax/stack.c
index ee99e7dfcdba..3c65eae701c4 100644
--- a/net/wimax/stack.c
+++ b/net/wimax/stack.c
@@ -55,6 +55,7 @@
 #include <net/genetlink.h>
 #include <linux/netdevice.h>
 #include <linux/wimax.h>
+#include <linux/module.h>
 #include "wimax-internal.h"
 
 
diff --git a/net/wireless/core.c b/net/wireless/core.c
index c14865172da7..220f3bd176f8 100644
--- a/net/wireless/core.c
+++ b/net/wireless/core.c
@@ -582,7 +582,7 @@ int wiphy_register(struct wiphy *wiphy)
         }
 
         /* set up regulatory info */
-        wiphy_update_regulatory(wiphy, NL80211_REGDOM_SET_BY_CORE);
+        regulatory_update(wiphy, NL80211_REGDOM_SET_BY_CORE);
 
         list_add_rcu(&rdev->list, &cfg80211_rdev_list);
         cfg80211_rdev_list_generation++;
diff --git a/net/wireless/core.h b/net/wireless/core.h
index 8672e028022f..b9ec3061ed72 100644
--- a/net/wireless/core.h
+++ b/net/wireless/core.h
@@ -279,8 +279,6 @@ extern int cfg80211_dev_rename(struct cfg80211_registered_device *rdev,
                                char *newname);
 
 void ieee80211_set_bitrate_flags(struct wiphy *wiphy);
-void wiphy_update_regulatory(struct wiphy *wiphy,
-                             enum nl80211_reg_initiator setby);
 
 void cfg80211_bss_expire(struct cfg80211_registered_device *dev);
 void cfg80211_bss_age(struct cfg80211_registered_device *dev,
@@ -377,7 +375,8 @@ int cfg80211_mlme_mgmt_tx(struct cfg80211_registered_device *rdev,
                           struct ieee80211_channel *chan, bool offchan,
                           enum nl80211_channel_type channel_type,
                           bool channel_type_valid, unsigned int wait,
-                          const u8 *buf, size_t len, u64 *cookie);
+                          const u8 *buf, size_t len, bool no_cck,
+                          u64 *cookie);
 
 /* SME */
 int __cfg80211_connect(struct cfg80211_registered_device *rdev,
@@ -408,6 +407,7 @@ void cfg80211_sme_failed_assoc(struct wireless_dev *wdev);
 bool cfg80211_sme_failed_reassoc(struct wireless_dev *wdev);
 
 /* internal helpers */
+bool cfg80211_supported_cipher_suite(struct wiphy *wiphy, u32 cipher);
 int cfg80211_validate_key_settings(struct cfg80211_registered_device *rdev,
                                    struct key_params *params, int key_idx,
                                    bool pairwise, const u8 *mac_addr);
diff --git a/net/wireless/ibss.c b/net/wireless/ibss.c
index f33fbb79437c..30f20fe4a5fe 100644
--- a/net/wireless/ibss.c
+++ b/net/wireless/ibss.c
@@ -7,6 +7,7 @@
 #include <linux/etherdevice.h>
 #include <linux/if_arp.h>
 #include <linux/slab.h>
+#include <linux/export.h>
 #include <net/cfg80211.h>
 #include "wext-compat.h"
 #include "nl80211.h"
diff --git a/net/wireless/lib80211.c b/net/wireless/lib80211.c
index 3268fac5ab22..a55c27b75ee5 100644
--- a/net/wireless/lib80211.c
+++ b/net/wireless/lib80211.c
@@ -41,6 +41,11 @@ struct lib80211_crypto_alg {
 static LIST_HEAD(lib80211_crypto_algs);
 static DEFINE_SPINLOCK(lib80211_crypto_lock);
 
+static void lib80211_crypt_deinit_entries(struct lib80211_crypt_info *info,
+                                          int force);
+static void lib80211_crypt_quiescing(struct lib80211_crypt_info *info);
+static void lib80211_crypt_deinit_handler(unsigned long data);
+
 const char *print_ssid(char *buf, const char *ssid, u8 ssid_len)
 {
         const char *s = ssid;
@@ -111,7 +116,8 @@ void lib80211_crypt_info_free(struct lib80211_crypt_info *info)
 }
 EXPORT_SYMBOL(lib80211_crypt_info_free);
 
-void lib80211_crypt_deinit_entries(struct lib80211_crypt_info *info, int force)
+static void lib80211_crypt_deinit_entries(struct lib80211_crypt_info *info,
+                                          int force)
 {
         struct lib80211_crypt_data *entry, *next;
         unsigned long flags;
@@ -131,10 +137,9 @@ void lib80211_crypt_deinit_entries(struct lib80211_crypt_info *info, int force)
         }
         spin_unlock_irqrestore(info->lock, flags);
 }
-EXPORT_SYMBOL(lib80211_crypt_deinit_entries);
 
 /* After this, crypt_deinit_list won't accept new members */
-void lib80211_crypt_quiescing(struct lib80211_crypt_info *info)
+static void lib80211_crypt_quiescing(struct lib80211_crypt_info *info)
 {
         unsigned long flags;
 
@@ -142,9 +147,8 @@ void lib80211_crypt_quiescing(struct lib80211_crypt_info *info)
         info->crypt_quiesced = 1;
         spin_unlock_irqrestore(info->lock, flags);
 }
-EXPORT_SYMBOL(lib80211_crypt_quiescing);
 
-void lib80211_crypt_deinit_handler(unsigned long data)
+static void lib80211_crypt_deinit_handler(unsigned long data)
 {
         struct lib80211_crypt_info *info = (struct lib80211_crypt_info *)data;
         unsigned long flags;
@@ -160,7 +164,6 @@ void lib80211_crypt_deinit_handler(unsigned long data)
         }
         spin_unlock_irqrestore(info->lock, flags);
 }
-EXPORT_SYMBOL(lib80211_crypt_deinit_handler);
 
 void lib80211_crypt_delayed_deinit(struct lib80211_crypt_info *info,
                                     struct lib80211_crypt_data **crypt)
diff --git a/net/wireless/lib80211_crypt_ccmp.c b/net/wireless/lib80211_crypt_ccmp.c
index dacb3b4b1bdb..755738d26bb4 100644
--- a/net/wireless/lib80211_crypt_ccmp.c
+++ b/net/wireless/lib80211_crypt_ccmp.c
@@ -77,8 +77,6 @@ static void *lib80211_ccmp_init(int key_idx)
 
         priv->tfm = crypto_alloc_cipher("aes", 0, CRYPTO_ALG_ASYNC);
         if (IS_ERR(priv->tfm)) {
-                printk(KERN_DEBUG "lib80211_crypt_ccmp: could not allocate "
-                       "crypto API aes\n");
                 priv->tfm = NULL;
                 goto fail;
         }
diff --git a/net/wireless/lib80211_crypt_tkip.c b/net/wireless/lib80211_crypt_tkip.c
index 7ea4f2b0770e..38734846c19e 100644
--- a/net/wireless/lib80211_crypt_tkip.c
+++ b/net/wireless/lib80211_crypt_tkip.c
@@ -101,7 +101,6 @@ static void *lib80211_tkip_init(int key_idx)
         priv->tx_tfm_arc4 = crypto_alloc_blkcipher("ecb(arc4)", 0,
                                                 CRYPTO_ALG_ASYNC);
         if (IS_ERR(priv->tx_tfm_arc4)) {
-                printk(KERN_DEBUG pr_fmt("could not allocate crypto API arc4\n"));
                 priv->tx_tfm_arc4 = NULL;
                 goto fail;
         }
@@ -109,7 +108,6 @@ static void *lib80211_tkip_init(int key_idx)
         priv->tx_tfm_michael = crypto_alloc_hash("michael_mic", 0,
                                                  CRYPTO_ALG_ASYNC);
         if (IS_ERR(priv->tx_tfm_michael)) {
-                printk(KERN_DEBUG pr_fmt("could not allocate crypto API michael_mic\n"));
                 priv->tx_tfm_michael = NULL;
                 goto fail;
         }
@@ -117,7 +115,6 @@ static void *lib80211_tkip_init(int key_idx)
         priv->rx_tfm_arc4 = crypto_alloc_blkcipher("ecb(arc4)", 0,
                                                 CRYPTO_ALG_ASYNC);
         if (IS_ERR(priv->rx_tfm_arc4)) {
-                printk(KERN_DEBUG pr_fmt("could not allocate crypto API arc4\n"));
                 priv->rx_tfm_arc4 = NULL;
                 goto fail;
         }
@@ -125,7 +122,6 @@ static void *lib80211_tkip_init(int key_idx)
         priv->rx_tfm_michael = crypto_alloc_hash("michael_mic", 0,
                                                  CRYPTO_ALG_ASYNC);
         if (IS_ERR(priv->rx_tfm_michael)) {
-                printk(KERN_DEBUG pr_fmt("could not allocate crypto API michael_mic\n"));
                 priv->rx_tfm_michael = NULL;
                 goto fail;
         }
diff --git a/net/wireless/lib80211_crypt_wep.c b/net/wireless/lib80211_crypt_wep.c
index 2f265e033ae2..c1304018fc1c 100644
--- a/net/wireless/lib80211_crypt_wep.c
+++ b/net/wireless/lib80211_crypt_wep.c
@@ -50,16 +50,12 @@ static void *lib80211_wep_init(int keyidx)
 
         priv->tx_tfm = crypto_alloc_blkcipher("ecb(arc4)", 0, CRYPTO_ALG_ASYNC);
         if (IS_ERR(priv->tx_tfm)) {
-                printk(KERN_DEBUG "lib80211_crypt_wep: could not allocate "
-                       "crypto API arc4\n");
                 priv->tx_tfm = NULL;
                 goto fail;
         }
 
         priv->rx_tfm = crypto_alloc_blkcipher("ecb(arc4)", 0, CRYPTO_ALG_ASYNC);
         if (IS_ERR(priv->rx_tfm)) {
-                printk(KERN_DEBUG "lib80211_crypt_wep: could not allocate "
-                       "crypto API arc4\n");
                 priv->rx_tfm = NULL;
                 goto fail;
         }
diff --git a/net/wireless/mesh.c b/net/wireless/mesh.c
index 5c116083eeca..b7b7868f4128 100644
--- a/net/wireless/mesh.c
+++ b/net/wireless/mesh.c
@@ -1,4 +1,5 @@
 #include <linux/ieee80211.h>
+#include <linux/export.h>
 #include <net/cfg80211.h>
 #include "nl80211.h"
 #include "core.h"
@@ -12,6 +13,7 @@
 #define MESH_HOLD_T             100
 
 #define MESH_PATH_TIMEOUT       5000
+#define MESH_RANN_INTERVAL      5000
 
 /*
  * Minimum interval between two consecutive PREQs originated by the same
@@ -49,6 +51,8 @@ const struct mesh_config default_mesh_config = {
         .dot11MeshHWMPmaxPREQretries = MESH_MAX_PREQ_RETRIES,
         .path_refresh_time = MESH_PATH_REFRESH_TIME,
         .min_discovery_timeout = MESH_MIN_DISCOVERY_TIMEOUT,
+        .dot11MeshHWMPRannInterval = MESH_RANN_INTERVAL,
+        .dot11MeshGateAnnouncementProtocol = false,
 };
 
 const struct mesh_setup default_mesh_setup = {
diff --git a/net/wireless/mlme.c b/net/wireless/mlme.c
index 832f6574e4ed..21fc9702f81c 100644
--- a/net/wireless/mlme.c
+++ b/net/wireless/mlme.c
@@ -900,7 +900,8 @@ int cfg80211_mlme_mgmt_tx(struct cfg80211_registered_device *rdev,
                           struct ieee80211_channel *chan, bool offchan,
                           enum nl80211_channel_type channel_type,
                           bool channel_type_valid, unsigned int wait,
-                          const u8 *buf, size_t len, u64 *cookie)
+                          const u8 *buf, size_t len, bool no_cck,
+                          u64 *cookie)
 {
         struct wireless_dev *wdev = dev->ieee80211_ptr;
         const struct ieee80211_mgmt *mgmt;
@@ -991,7 +992,7 @@ int cfg80211_mlme_mgmt_tx(struct cfg80211_registered_device *rdev,
         /* Transmit the Action frame as requested by user space */
         return rdev->ops->mgmt_tx(&rdev->wiphy, dev, chan, offchan,
                                   channel_type, channel_type_valid,
-                                  wait, buf, len, cookie);
+                                  wait, buf, len, no_cck, cookie);
 }
 
 bool cfg80211_rx_mgmt(struct net_device *dev, int freq, const u8 *buf,
@@ -1095,3 +1096,14 @@ void cfg80211_gtk_rekey_notify(struct net_device *dev, const u8 *bssid,
         nl80211_gtk_rekey_notify(rdev, dev, bssid, replay_ctr, gfp);
 }
 EXPORT_SYMBOL(cfg80211_gtk_rekey_notify);
+
+void cfg80211_pmksa_candidate_notify(struct net_device *dev, int index,
+                                     const u8 *bssid, bool preauth, gfp_t gfp)
+{
+        struct wireless_dev *wdev = dev->ieee80211_ptr;
+        struct wiphy *wiphy = wdev->wiphy;
+        struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
+
+        nl80211_pmksa_candidate_notify(rdev, dev, index, bssid, preauth, gfp);
+}
+EXPORT_SYMBOL(cfg80211_pmksa_candidate_notify);
diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c
index ea40d540a990..48260c2d092a 100644
--- a/net/wireless/nl80211.c
+++ b/net/wireless/nl80211.c
@@ -23,6 +23,12 @@
 #include "nl80211.h"
 #include "reg.h"
 
+static bool nl80211_valid_auth_type(enum nl80211_auth_type auth_type);
+static int nl80211_crypto_settings(struct cfg80211_registered_device *rdev,
+                                   struct genl_info *info,
+                                   struct cfg80211_crypto_settings *settings,
+                                   int cipher_limit);
+
 static int nl80211_pre_doit(struct genl_ops *ops, struct sk_buff *skb,
                             struct genl_info *info);
 static void nl80211_post_doit(struct genl_ops *ops, struct sk_buff *skb,
@@ -178,6 +184,19 @@ static const struct nla_policy nl80211_policy[NL80211_ATTR_MAX+1] = {
         [NL80211_ATTR_SCHED_SCAN_INTERVAL] = { .type = NLA_U32 },
         [NL80211_ATTR_REKEY_DATA] = { .type = NLA_NESTED },
         [NL80211_ATTR_SCAN_SUPP_RATES] = { .type = NLA_NESTED },
+        [NL80211_ATTR_HIDDEN_SSID] = { .type = NLA_U32 },
+        [NL80211_ATTR_IE_PROBE_RESP] = { .type = NLA_BINARY,
+                                         .len = IEEE80211_MAX_DATA_LEN },
+        [NL80211_ATTR_IE_ASSOC_RESP] = { .type = NLA_BINARY,
+                                         .len = IEEE80211_MAX_DATA_LEN },
+        [NL80211_ATTR_ROAM_SUPPORT] = { .type = NLA_FLAG },
+        [NL80211_ATTR_SCHED_SCAN_MATCH] = { .type = NLA_NESTED },
+        [NL80211_ATTR_TX_NO_CCK_RATE] = { .type = NLA_FLAG },
+        [NL80211_ATTR_TDLS_ACTION] = { .type = NLA_U8 },
+        [NL80211_ATTR_TDLS_DIALOG_TOKEN] = { .type = NLA_U8 },
+        [NL80211_ATTR_TDLS_OPERATION] = { .type = NLA_U8 },
+        [NL80211_ATTR_TDLS_SUPPORT] = { .type = NLA_FLAG },
+        [NL80211_ATTR_TDLS_EXTERNAL_SETUP] = { .type = NLA_FLAG },
 };
 
 /* policy for the key attributes */
@@ -220,6 +239,12 @@ nl80211_rekey_policy[NUM_NL80211_REKEY_DATA] = {
         [NL80211_REKEY_DATA_REPLAY_CTR] = { .len = NL80211_REPLAY_CTR_LEN },
 };
 
+static const struct nla_policy
+nl80211_match_policy[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1] = {
+        [NL80211_ATTR_SCHED_SCAN_MATCH_SSID] = { .type = NLA_BINARY,
+                                                 .len = IEEE80211_MAX_SSID_LEN },
+};
+
 /* ifidx get helper */
 static int nl80211_get_ifidx(struct netlink_callback *cb)
 {
@@ -703,11 +728,21 @@ static int nl80211_send_wiphy(struct sk_buff *msg, u32 pid, u32 seq, int flags,
                     dev->wiphy.max_scan_ie_len);
         NLA_PUT_U16(msg, NL80211_ATTR_MAX_SCHED_SCAN_IE_LEN,
                     dev->wiphy.max_sched_scan_ie_len);
+        NLA_PUT_U8(msg, NL80211_ATTR_MAX_MATCH_SETS,
+                   dev->wiphy.max_match_sets);
 
         if (dev->wiphy.flags & WIPHY_FLAG_IBSS_RSN)
                 NLA_PUT_FLAG(msg, NL80211_ATTR_SUPPORT_IBSS_RSN);
         if (dev->wiphy.flags & WIPHY_FLAG_MESH_AUTH)
                 NLA_PUT_FLAG(msg, NL80211_ATTR_SUPPORT_MESH_AUTH);
+        if (dev->wiphy.flags & WIPHY_FLAG_AP_UAPSD)
+                NLA_PUT_FLAG(msg, NL80211_ATTR_SUPPORT_AP_UAPSD);
+        if (dev->wiphy.flags & WIPHY_FLAG_SUPPORTS_FW_ROAM)
+                NLA_PUT_FLAG(msg, NL80211_ATTR_ROAM_SUPPORT);
+        if (dev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS)
+                NLA_PUT_FLAG(msg, NL80211_ATTR_TDLS_SUPPORT);
+        if (dev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP)
+                NLA_PUT_FLAG(msg, NL80211_ATTR_TDLS_EXTERNAL_SETUP);
 
         NLA_PUT(msg, NL80211_ATTR_CIPHER_SUITES,
                 sizeof(u32) * dev->wiphy.n_cipher_suites,
@@ -850,6 +885,10 @@ static int nl80211_send_wiphy(struct sk_buff *msg, u32 pid, u32 seq, int flags,
         }
         CMD(set_channel, SET_CHANNEL);
         CMD(set_wds_peer, SET_WDS_PEER);
+        if (dev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) {
+                CMD(tdls_mgmt, TDLS_MGMT);
+                CMD(tdls_oper, TDLS_OPER);
+        }
         if (dev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN)
                 CMD(sched_scan_start, START_SCHED_SCAN);
 
@@ -871,8 +910,7 @@ static int nl80211_send_wiphy(struct sk_buff *msg, u32 pid, u32 seq, int flags,
                 NLA_PUT_U32(msg, NL80211_ATTR_MAX_REMAIN_ON_CHANNEL_DURATION,
                             dev->wiphy.max_remain_on_channel_duration);
 
-        /* for now at least assume all drivers have it */
-        if (dev->ops->mgmt_tx)
+        if (dev->ops->mgmt_tx_cancel_wait)
                 NLA_PUT_FLAG(msg, NL80211_ATTR_OFFCHANNEL_TX_OK);
 
         if (mgmt_stypes) {
@@ -1210,6 +1248,11 @@ static int nl80211_set_wiphy(struct sk_buff *skb, struct genl_info *info)
                         goto bad_res;
                 }
 
+                if (!netdev) {
+                        result = -EINVAL;
+                        goto bad_res;
+                }
+
                 nla_for_each_nested(nl_txq_params,
                                     info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS],
                                     rem_txq_params) {
@@ -1222,6 +1265,7 @@ static int nl80211_set_wiphy(struct sk_buff *skb, struct genl_info *info)
                                 goto bad_res;
 
                         result = rdev->ops->set_txq_params(&rdev->wiphy,
+                                                           netdev,
                                                            &txq_params);
                         if (result)
                                 goto bad_res;
@@ -1985,7 +2029,10 @@ static int nl80211_addset_beacon(struct sk_buff *skb, struct genl_info *info)
         struct beacon_parameters params;
         int haveinfo = 0, err;
 
-        if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_BEACON_TAIL]))
+        if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_BEACON_TAIL]) ||
+            !is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]) ||
+            !is_valid_ie_attr(info->attrs[NL80211_ATTR_IE_PROBE_RESP]) ||
+            !is_valid_ie_attr(info->attrs[NL80211_ATTR_IE_ASSOC_RESP]))
                 return -EINVAL;
 
         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
@@ -2011,6 +2058,49 @@ static int nl80211_addset_beacon(struct sk_buff *skb, struct genl_info *info)
                 if (err)
                         return err;
 
+                /*
+                 * In theory, some of these attributes could be required for
+                 * NEW_BEACON, but since they were not used when the command was
+                 * originally added, keep them optional for old user space
+                 * programs to work with drivers that do not need the additional
+                 * information.
+                 */
+                if (info->attrs[NL80211_ATTR_SSID]) {
+                        params.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
+                        params.ssid_len =
+                                nla_len(info->attrs[NL80211_ATTR_SSID]);
+                        if (params.ssid_len == 0 ||
+                            params.ssid_len > IEEE80211_MAX_SSID_LEN)
+                                return -EINVAL;
+                }
+
+                if (info->attrs[NL80211_ATTR_HIDDEN_SSID]) {
+                        params.hidden_ssid = nla_get_u32(
+                                info->attrs[NL80211_ATTR_HIDDEN_SSID]);
+                        if (params.hidden_ssid !=
+                            NL80211_HIDDEN_SSID_NOT_IN_USE &&
+                            params.hidden_ssid !=
+                            NL80211_HIDDEN_SSID_ZERO_LEN &&
+                            params.hidden_ssid !=
+                            NL80211_HIDDEN_SSID_ZERO_CONTENTS)
+                                return -EINVAL;
+                }
+
+                params.privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
+
+                if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
+                        params.auth_type = nla_get_u32(
+                                info->attrs[NL80211_ATTR_AUTH_TYPE]);
+                        if (!nl80211_valid_auth_type(params.auth_type))
+                                return -EINVAL;
+                } else
+                        params.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
+
+                err = nl80211_crypto_settings(rdev, info, &params.crypto,
+                                              NL80211_MAX_NR_CIPHER_SUITES);
+                if (err)
+                        return err;
+
                 call = rdev->ops->add_beacon;
                 break;
         case NL80211_CMD_SET_BEACON:
@@ -2041,6 +2131,25 @@ static int nl80211_addset_beacon(struct sk_buff *skb, struct genl_info *info)
         if (!haveinfo)
                 return -EINVAL;
 
+        if (info->attrs[NL80211_ATTR_IE]) {
+                params.beacon_ies = nla_data(info->attrs[NL80211_ATTR_IE]);
+                params.beacon_ies_len = nla_len(info->attrs[NL80211_ATTR_IE]);
+        }
+
+        if (info->attrs[NL80211_ATTR_IE_PROBE_RESP]) {
+                params.proberesp_ies =
+                        nla_data(info->attrs[NL80211_ATTR_IE_PROBE_RESP]);
+                params.proberesp_ies_len =
+                        nla_len(info->attrs[NL80211_ATTR_IE_PROBE_RESP]);
+        }
+
+        if (info->attrs[NL80211_ATTR_IE_ASSOC_RESP]) {
+                params.assocresp_ies =
+                        nla_data(info->attrs[NL80211_ATTR_IE_ASSOC_RESP]);
+                params.assocresp_ies_len =
+                        nla_len(info->attrs[NL80211_ATTR_IE_ASSOC_RESP]);
+        }
+
         err = call(&rdev->wiphy, dev, &params);
         if (!err && params.interval)
                 wdev->beacon_interval = params.interval;
@@ -2235,8 +2344,16 @@ static int nl80211_send_station(struct sk_buff *msg, u32 pid, u32 seq,
 
                 nla_nest_end(msg, bss_param);
         }
+        if (sinfo->filled & STATION_INFO_STA_FLAGS)
+                NLA_PUT(msg, NL80211_STA_INFO_STA_FLAGS,
+                        sizeof(struct nl80211_sta_flag_update),
+                        &sinfo->sta_flags);
         nla_nest_end(msg, sinfoattr);
 
+        if (sinfo->filled & STATION_INFO_ASSOC_REQ_IES)
+                NLA_PUT(msg, NL80211_ATTR_IE, sinfo->assoc_req_ies_len,
+                        sinfo->assoc_req_ies);
+
         return genlmsg_end(msg, hdr);
 
  nla_put_failure:
@@ -2264,6 +2381,7 @@ static int nl80211_dump_station(struct sk_buff *skb,
         }
 
         while (1) {
+                memset(&sinfo, 0, sizeof(sinfo));
                 err = dev->ops->dump_station(&dev->wiphy, netdev, sta_idx,
                                              mac_addr, &sinfo);
                 if (err == -ENOENT)
@@ -2416,18 +2534,25 @@ static int nl80211_set_station(struct sk_buff *skb, struct genl_info *info)
                 break;
         case NL80211_IFTYPE_P2P_CLIENT:
         case NL80211_IFTYPE_STATION:
-                /* disallow everything but AUTHORIZED flag */
+                /* disallow things sta doesn't support */
                 if (params.plink_action)
                         err = -EINVAL;
                 if (params.vlan)
                         err = -EINVAL;
-                if (params.supported_rates)
+                if (params.supported_rates &&
+                    !(params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)))
                         err = -EINVAL;
                 if (params.ht_capa)
                         err = -EINVAL;
                 if (params.listen_interval >= 0)
                         err = -EINVAL;
-                if (params.sta_flags_mask & ~BIT(NL80211_STA_FLAG_AUTHORIZED))
+                if (params.sta_flags_mask &
+                                ~(BIT(NL80211_STA_FLAG_AUTHORIZED) |
+                                  BIT(NL80211_STA_FLAG_TDLS_PEER)))
+                        err = -EINVAL;
+                /* can't change the TDLS bit */
+                if (!(params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) &&
+                    (params.sta_flags_mask & BIT(NL80211_STA_FLAG_TDLS_PEER)))
                         err = -EINVAL;
                 break;
         case NL80211_IFTYPE_MESH_POINT:
@@ -2465,6 +2590,12 @@ static int nl80211_set_station(struct sk_buff *skb, struct genl_info *info)
         return err;
 }
 
+static struct nla_policy
+nl80211_sta_wme_policy[NL80211_STA_WME_MAX + 1] __read_mostly = {
+        [NL80211_STA_WME_UAPSD_QUEUES] = { .type = NLA_U8 },
+        [NL80211_STA_WME_MAX_SP] = { .type = NLA_U8 },
+};
+
 static int nl80211_new_station(struct sk_buff *skb, struct genl_info *info)
 {
         struct cfg80211_registered_device *rdev = info->user_ptr[0];
@@ -2510,10 +2641,50 @@ static int nl80211_new_station(struct sk_buff *skb, struct genl_info *info)
         if (parse_station_flags(info, &params))
                 return -EINVAL;
 
+        /* parse WME attributes if sta is WME capable */
+        if ((rdev->wiphy.flags & WIPHY_FLAG_AP_UAPSD) &&
+            (params.sta_flags_set & BIT(NL80211_STA_FLAG_WME)) &&
+            info->attrs[NL80211_ATTR_STA_WME]) {
+                struct nlattr *tb[NL80211_STA_WME_MAX + 1];
+                struct nlattr *nla;
+
+                nla = info->attrs[NL80211_ATTR_STA_WME];
+                err = nla_parse_nested(tb, NL80211_STA_WME_MAX, nla,
+                                       nl80211_sta_wme_policy);
+                if (err)
+                        return err;
+
+                if (tb[NL80211_STA_WME_UAPSD_QUEUES])
+                        params.uapsd_queues =
+                             nla_get_u8(tb[NL80211_STA_WME_UAPSD_QUEUES]);
+                if (params.uapsd_queues & ~IEEE80211_WMM_IE_STA_QOSINFO_AC_MASK)
+                        return -EINVAL;
+
+                if (tb[NL80211_STA_WME_MAX_SP])
+                        params.max_sp =
+                             nla_get_u8(tb[NL80211_STA_WME_MAX_SP]);
+
+                if (params.max_sp & ~IEEE80211_WMM_IE_STA_QOSINFO_SP_MASK)
+                        return -EINVAL;
+
+                params.sta_modify_mask |= STATION_PARAM_APPLY_UAPSD;
+        }
+
         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT &&
-            dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
+            dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO &&
+            dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION)
+                return -EINVAL;
+
+        /*
+         * Only managed stations can add TDLS peers, and only when the
+         * wiphy supports external TDLS setup.
+         */
+        if (dev->ieee80211_ptr->iftype == NL80211_IFTYPE_STATION &&
+            !((params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) &&
+              (rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) &&
+              (rdev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP)))
                 return -EINVAL;
 
         err = get_vlan(info, rdev, &params.vlan);
@@ -2955,6 +3126,10 @@ static int nl80211_get_mesh_config(struct sk_buff *skb,
                         cur_params.dot11MeshHWMPnetDiameterTraversalTime);
         NLA_PUT_U8(msg, NL80211_MESHCONF_HWMP_ROOTMODE,
                         cur_params.dot11MeshHWMPRootMode);
+        NLA_PUT_U16(msg, NL80211_MESHCONF_HWMP_RANN_INTERVAL,
+                        cur_params.dot11MeshHWMPRannInterval);
+        NLA_PUT_U8(msg, NL80211_MESHCONF_GATE_ANNOUNCEMENTS,
+                        cur_params.dot11MeshGateAnnouncementProtocol);
         nla_nest_end(msg, pinfoattr);
         genlmsg_end(msg, hdr);
         return genlmsg_reply(msg, info);
@@ -2982,6 +3157,9 @@ static const struct nla_policy nl80211_meshconf_params_policy[NL80211_MESHCONF_A
         [NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT] = { .type = NLA_U32 },
         [NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL] = { .type = NLA_U16 },
         [NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME] = { .type = NLA_U16 },
+        [NL80211_MESHCONF_HWMP_ROOTMODE] = { .type = NLA_U8 },
+        [NL80211_MESHCONF_HWMP_RANN_INTERVAL] = { .type = NLA_U16 },
+        [NL80211_MESHCONF_GATE_ANNOUNCEMENTS] = { .type = NLA_U8 },
 };
 
 static const struct nla_policy
@@ -3060,6 +3238,14 @@ do {\
                         dot11MeshHWMPRootMode, mask,
                         NL80211_MESHCONF_HWMP_ROOTMODE,
                         nla_get_u8);
+        FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
+                        dot11MeshHWMPRannInterval, mask,
+                        NL80211_MESHCONF_HWMP_RANN_INTERVAL,
+                        nla_get_u16);
+        FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
+                        dot11MeshGateAnnouncementProtocol, mask,
+                        NL80211_MESHCONF_GATE_ANNOUNCEMENTS,
+                        nla_get_u8);
         if (mask_out)
                 *mask_out = mask;
 
@@ -3477,6 +3663,9 @@ static int nl80211_trigger_scan(struct sk_buff *skb, struct genl_info *info)
                 }
         }
 
+        request->no_cck =
+                nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]);
+
         request->dev = dev;
         request->wiphy = &rdev->wiphy;
 
@@ -3503,10 +3692,11 @@ static int nl80211_start_sched_scan(struct sk_buff *skb,
         struct net_device *dev = info->user_ptr[1];
         struct nlattr *attr;
         struct wiphy *wiphy;
-        int err, tmp, n_ssids = 0, n_channels, i;
+        int err, tmp, n_ssids = 0, n_match_sets = 0, n_channels, i;
         u32 interval;
         enum ieee80211_band band;
         size_t ie_len;
+        struct nlattr *tb[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1];
 
         if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN) ||
             !rdev->ops->sched_scan_start)
@@ -3545,6 +3735,15 @@ static int nl80211_start_sched_scan(struct sk_buff *skb,
         if (n_ssids > wiphy->max_sched_scan_ssids)
                 return -EINVAL;
 
+        if (info->attrs[NL80211_ATTR_SCHED_SCAN_MATCH])
+                nla_for_each_nested(attr,
+                                    info->attrs[NL80211_ATTR_SCHED_SCAN_MATCH],
+                                    tmp)
+                        n_match_sets++;
+
+        if (n_match_sets > wiphy->max_match_sets)
+                return -EINVAL;
+
         if (info->attrs[NL80211_ATTR_IE])
                 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
         else
@@ -3562,6 +3761,7 @@ static int nl80211_start_sched_scan(struct sk_buff *skb,
 
         request = kzalloc(sizeof(*request)
                         + sizeof(*request->ssids) * n_ssids
+                        + sizeof(*request->match_sets) * n_match_sets
                         + sizeof(*request->channels) * n_channels
                         + ie_len, GFP_KERNEL);
         if (!request) {
@@ -3579,6 +3779,18 @@ static int nl80211_start_sched_scan(struct sk_buff *skb,
                         request->ie = (void *)(request->channels + n_channels);
         }
 
+        if (n_match_sets) {
+                if (request->ie)
+                        request->match_sets = (void *)(request->ie + ie_len);
+                else if (request->ssids)
+                        request->match_sets =
+                                (void *)(request->ssids + n_ssids);
+                else
+                        request->match_sets =
+                                (void *)(request->channels + n_channels);
+        }
+        request->n_match_sets = n_match_sets;
+
         i = 0;
         if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
                 /* user specified, bail out if channel not found */
@@ -3643,6 +3855,31 @@ static int nl80211_start_sched_scan(struct sk_buff *skb,
                 }
         }
 
+        i = 0;
+        if (info->attrs[NL80211_ATTR_SCHED_SCAN_MATCH]) {
+                nla_for_each_nested(attr,
+                                    info->attrs[NL80211_ATTR_SCHED_SCAN_MATCH],
+                                    tmp) {
+                        struct nlattr *ssid;
+
+                        nla_parse(tb, NL80211_SCHED_SCAN_MATCH_ATTR_MAX,
+                                  nla_data(attr), nla_len(attr),
+                                  nl80211_match_policy);
+                        ssid = tb[NL80211_ATTR_SCHED_SCAN_MATCH_SSID];
+                        if (ssid) {
+                                if (nla_len(ssid) > IEEE80211_MAX_SSID_LEN) {
+                                        err = -EINVAL;
+                                        goto out_free;
+                                }
+                                memcpy(request->match_sets[i].ssid.ssid,
+                                       nla_data(ssid), nla_len(ssid));
+                                request->match_sets[i].ssid.ssid_len =
+                                        nla_len(ssid);
+                        }
+                        i++;
+                }
+        }
+
         if (info->attrs[NL80211_ATTR_IE]) {
                 request->ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
                 memcpy((void *)request->ie,
@@ -3935,22 +4172,6 @@ static bool nl80211_valid_wpa_versions(u32 wpa_versions)
                                   NL80211_WPA_VERSION_2));
 }
 
-static bool nl80211_valid_akm_suite(u32 akm)
-{
-        return akm == WLAN_AKM_SUITE_8021X ||
-                akm == WLAN_AKM_SUITE_PSK;
-}
-
-static bool nl80211_valid_cipher_suite(u32 cipher)
-{
-        return cipher == WLAN_CIPHER_SUITE_WEP40 ||
-                cipher == WLAN_CIPHER_SUITE_WEP104 ||
-                cipher == WLAN_CIPHER_SUITE_TKIP ||
-                cipher == WLAN_CIPHER_SUITE_CCMP ||
-                cipher == WLAN_CIPHER_SUITE_AES_CMAC;
-}
-
-
 static int nl80211_authenticate(struct sk_buff *skb, struct genl_info *info)
 {
         struct cfg80211_registered_device *rdev = info->user_ptr[0];
@@ -4083,7 +4304,8 @@ static int nl80211_crypto_settings(struct cfg80211_registered_device *rdev,
                 memcpy(settings->ciphers_pairwise, data, len);
 
                 for (i = 0; i < settings->n_ciphers_pairwise; i++)
-                        if (!nl80211_valid_cipher_suite(
+                        if (!cfg80211_supported_cipher_suite(
+                                        &rdev->wiphy,
                                         settings->ciphers_pairwise[i]))
                                 return -EINVAL;
         }
@@ -4091,7 +4313,8 @@ static int nl80211_crypto_settings(struct cfg80211_registered_device *rdev,
         if (info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]) {
                 settings->cipher_group =
                         nla_get_u32(info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]);
-                if (!nl80211_valid_cipher_suite(settings->cipher_group))
+                if (!cfg80211_supported_cipher_suite(&rdev->wiphy,
+                                                     settings->cipher_group))
                         return -EINVAL;
         }
 
@@ -4104,7 +4327,7 @@ static int nl80211_crypto_settings(struct cfg80211_registered_device *rdev,
 
         if (info->attrs[NL80211_ATTR_AKM_SUITES]) {
                 void *data;
-                int len, i;
+                int len;
 
                 data = nla_data(info->attrs[NL80211_ATTR_AKM_SUITES]);
                 len = nla_len(info->attrs[NL80211_ATTR_AKM_SUITES]);
@@ -4117,10 +4340,6 @@ static int nl80211_crypto_settings(struct cfg80211_registered_device *rdev,
                         return -EINVAL;
 
                 memcpy(settings->akm_suites, data, len);
-
-                for (i = 0; i < settings->n_akm_suites; i++)
-                        if (!nl80211_valid_akm_suite(settings->akm_suites[i]))
-                                return -EINVAL;
         }
 
         return 0;
@@ -4339,8 +4558,12 @@ static int nl80211_join_ibss(struct sk_buff *skb, struct genl_info *info)
 
         wiphy = &rdev->wiphy;
 
-        if (info->attrs[NL80211_ATTR_MAC])
+        if (info->attrs[NL80211_ATTR_MAC]) {
                 ibss.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
+
+                if (!is_valid_ether_addr(ibss.bssid))
+                        return -EINVAL;
+        }
         ibss.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
         ibss.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
 
@@ -4777,6 +5000,57 @@ static int nl80211_flush_pmksa(struct sk_buff *skb, struct genl_info *info)
         return rdev->ops->flush_pmksa(&rdev->wiphy, dev);
 }
 
+static int nl80211_tdls_mgmt(struct sk_buff *skb, struct genl_info *info)
+{
+        struct cfg80211_registered_device *rdev = info->user_ptr[0];
+        struct net_device *dev = info->user_ptr[1];
+        u8 action_code, dialog_token;
+        u16 status_code;
+        u8 *peer;
+
+        if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) ||
+            !rdev->ops->tdls_mgmt)
+                return -EOPNOTSUPP;
+
+        if (!info->attrs[NL80211_ATTR_TDLS_ACTION] ||
+            !info->attrs[NL80211_ATTR_STATUS_CODE] ||
+            !info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN] ||
+            !info->attrs[NL80211_ATTR_IE] ||
+            !info->attrs[NL80211_ATTR_MAC])
+                return -EINVAL;
+
+        peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
+        action_code = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_ACTION]);
+        status_code = nla_get_u16(info->attrs[NL80211_ATTR_STATUS_CODE]);
+        dialog_token = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN]);
+
+        return rdev->ops->tdls_mgmt(&rdev->wiphy, dev, peer, action_code,
+                                    dialog_token, status_code,
+                                    nla_data(info->attrs[NL80211_ATTR_IE]),
+                                    nla_len(info->attrs[NL80211_ATTR_IE]));
+}
+
+static int nl80211_tdls_oper(struct sk_buff *skb, struct genl_info *info)
+{
+        struct cfg80211_registered_device *rdev = info->user_ptr[0];
+        struct net_device *dev = info->user_ptr[1];
+        enum nl80211_tdls_operation operation;
+        u8 *peer;
+
+        if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) ||
+            !rdev->ops->tdls_oper)
+                return -EOPNOTSUPP;
+
+        if (!info->attrs[NL80211_ATTR_TDLS_OPERATION] ||
+            !info->attrs[NL80211_ATTR_MAC])
+                return -EINVAL;
+
+        operation = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_OPERATION]);
+        peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
+
+        return rdev->ops->tdls_oper(&rdev->wiphy, dev, peer, operation);
+}
+
 static int nl80211_remain_on_channel(struct sk_buff *skb,
                                      struct genl_info *info)
 {
@@ -4997,6 +5271,7 @@ static int nl80211_tx_mgmt(struct sk_buff *skb, struct genl_info *info)
         struct sk_buff *msg;
         unsigned int wait = 0;
         bool offchan;
+        bool no_cck;
 
         if (!info->attrs[NL80211_ATTR_FRAME] ||
             !info->attrs[NL80211_ATTR_WIPHY_FREQ])
@@ -5033,6 +5308,8 @@ static int nl80211_tx_mgmt(struct sk_buff *skb, struct genl_info *info)
 
         offchan = info->attrs[NL80211_ATTR_OFFCHANNEL_TX_OK];
 
+        no_cck = nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]);
+
         freq = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]);
         chan = rdev_freq_to_chan(rdev, freq, channel_type);
         if (chan == NULL)
@@ -5053,7 +5330,7 @@ static int nl80211_tx_mgmt(struct sk_buff *skb, struct genl_info *info)
                                     channel_type_valid, wait,
                                     nla_data(info->attrs[NL80211_ATTR_FRAME]),
                                     nla_len(info->attrs[NL80211_ATTR_FRAME]),
-                                    &cookie);
+                                    no_cck, &cookie);
         if (err)
                 goto free_msg;
 
@@ -6089,6 +6366,22 @@ static struct genl_ops nl80211_ops[] = {
                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
                                   NL80211_FLAG_NEED_RTNL,
         },
+        {
+                .cmd = NL80211_CMD_TDLS_MGMT,
+                .doit = nl80211_tdls_mgmt,
+                .policy = nl80211_policy,
+                .flags = GENL_ADMIN_PERM,
+                .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
+                                  NL80211_FLAG_NEED_RTNL,
+        },
+        {
+                .cmd = NL80211_CMD_TDLS_OPER,
+                .doit = nl80211_tdls_oper,
+                .policy = nl80211_policy,
+                .flags = GENL_ADMIN_PERM,
+                .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
+                                  NL80211_FLAG_NEED_RTNL,
+        },
 };
 
 static struct genl_multicast_group nl80211_mlme_mcgrp = {
@@ -7078,6 +7371,52 @@ void nl80211_gtk_rekey_notify(struct cfg80211_registered_device *rdev,
         nlmsg_free(msg);
 }
 
+void nl80211_pmksa_candidate_notify(struct cfg80211_registered_device *rdev,
+                                    struct net_device *netdev, int index,
+                                    const u8 *bssid, bool preauth, gfp_t gfp)
+{
+        struct sk_buff *msg;
+        struct nlattr *attr;
+        void *hdr;
+
+        msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
+        if (!msg)
+                return;
+
+        hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PMKSA_CANDIDATE);
+        if (!hdr) {
+                nlmsg_free(msg);
+                return;
+        }
+
+        NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
+        NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
+
+        attr = nla_nest_start(msg, NL80211_ATTR_PMKSA_CANDIDATE);
+        if (!attr)
+                goto nla_put_failure;
+
+        NLA_PUT_U32(msg, NL80211_PMKSA_CANDIDATE_INDEX, index);
+        NLA_PUT(msg, NL80211_PMKSA_CANDIDATE_BSSID, ETH_ALEN, bssid);
+        if (preauth)
+                NLA_PUT_FLAG(msg, NL80211_PMKSA_CANDIDATE_PREAUTH);
+
+        nla_nest_end(msg, attr);
+
+        if (genlmsg_end(msg, hdr) < 0) {
+                nlmsg_free(msg);
+                return;
+        }
+
+        genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
+                                nl80211_mlme_mcgrp.id, gfp);
+        return;
+
+ nla_put_failure:
+        genlmsg_cancel(msg, hdr);
+        nlmsg_free(msg);
+}
+
 void
 nl80211_send_cqm_pktloss_notify(struct cfg80211_registered_device *rdev,
                                 struct net_device *netdev, const u8 *peer,
diff --git a/net/wireless/nl80211.h b/net/wireless/nl80211.h
index 5d69c56400ae..f24a1fbeaf19 100644
--- a/net/wireless/nl80211.h
+++ b/net/wireless/nl80211.h
@@ -113,4 +113,8 @@ void nl80211_gtk_rekey_notify(struct cfg80211_registered_device *rdev,
                               struct net_device *netdev, const u8 *bssid,
                               const u8 *replay_ctr, gfp_t gfp);
 
+void nl80211_pmksa_candidate_notify(struct cfg80211_registered_device *rdev,
+                                    struct net_device *netdev, int index,
+                                    const u8 *bssid, bool preauth, gfp_t gfp);
+
 #endif /* __NET_WIRELESS_NL80211_H */
diff --git a/net/wireless/radiotap.c b/net/wireless/radiotap.c
index dbe35e138e94..c4ad7958af52 100644
--- a/net/wireless/radiotap.c
+++ b/net/wireless/radiotap.c
@@ -15,6 +15,7 @@
  */
 
 #include <linux/kernel.h>
+#include <linux/export.h>
 #include <net/cfg80211.h>
 #include <net/ieee80211_radiotap.h>
 #include <asm/unaligned.h>
diff --git a/net/wireless/reg.c b/net/wireless/reg.c
index 68a471ba193f..6acba9d18cc8 100644
--- a/net/wireless/reg.c
+++ b/net/wireless/reg.c
@@ -36,12 +36,14 @@
 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
 
 #include <linux/kernel.h>
+#include <linux/export.h>
 #include <linux/slab.h>
 #include <linux/list.h>
 #include <linux/random.h>
 #include <linux/ctype.h>
 #include <linux/nl80211.h>
 #include <linux/platform_device.h>
+#include <linux/moduleparam.h>
 #include <net/cfg80211.h>
 #include "core.h"
 #include "reg.h"
@@ -49,10 +51,8 @@
 #include "nl80211.h"
 
 #ifdef CONFIG_CFG80211_REG_DEBUG
-#define REG_DBG_PRINT(format, args...) \
-        do { \
-                printk(KERN_DEBUG pr_fmt(format), ##args);      \
-        } while (0)
+#define REG_DBG_PRINT(format, args...)                  \
+        printk(KERN_DEBUG pr_fmt(format), ##args)
 #else
 #define REG_DBG_PRINT(args...)
 #endif
@@ -753,9 +753,10 @@ static void chan_reg_rule_print_dbg(struct ieee80211_channel *chan,
                       chan->center_freq,
                       KHZ_TO_MHZ(desired_bw_khz));
 
-        REG_DBG_PRINT("%d KHz - %d KHz @  KHz), (%s mBi, %d mBm)\n",
+        REG_DBG_PRINT("%d KHz - %d KHz @ %d KHz), (%s mBi, %d mBm)\n",
                       freq_range->start_freq_khz,
                       freq_range->end_freq_khz,
+                      freq_range->max_bandwidth_khz,
                       max_antenna_gain,
                       power_rule->max_eirp);
 }
@@ -891,7 +892,7 @@ static bool ignore_reg_update(struct wiphy *wiphy,
             wiphy->flags & WIPHY_FLAG_CUSTOM_REGULATORY) {
                 REG_DBG_PRINT("Ignoring regulatory request %s "
                               "since the driver uses its own custom "
-                              "regulatory domain ",
+                              "regulatory domain\n",
                               reg_initiator_name(initiator));
                 return true;
         }
@@ -905,7 +906,7 @@ static bool ignore_reg_update(struct wiphy *wiphy,
             !is_world_regdom(last_request->alpha2)) {
                 REG_DBG_PRINT("Ignoring regulatory request %s "
                               "since the driver requires its own regulatory "
-                              "domain to be set first",
+                              "domain to be set first\n",
                               reg_initiator_name(initiator));
                 return true;
         }
@@ -913,14 +914,6 @@ static bool ignore_reg_update(struct wiphy *wiphy,
         return false;
 }
 
-static void update_all_wiphy_regulatory(enum nl80211_reg_initiator initiator)
-{
-        struct cfg80211_registered_device *rdev;
-
-        list_for_each_entry(rdev, &cfg80211_rdev_list, list)
-                wiphy_update_regulatory(&rdev->wiphy, initiator);
-}
-
 static void handle_reg_beacon(struct wiphy *wiphy,
                               unsigned int chan_idx,
                               struct reg_beacon *reg_beacon)
@@ -1120,11 +1113,13 @@ static void reg_process_ht_flags(struct wiphy *wiphy)
 
 }
 
-void wiphy_update_regulatory(struct wiphy *wiphy,
-                             enum nl80211_reg_initiator initiator)
+static void wiphy_update_regulatory(struct wiphy *wiphy,
+                                    enum nl80211_reg_initiator initiator)
 {
         enum ieee80211_band band;
 
+        assert_reg_lock();
+
         if (ignore_reg_update(wiphy, initiator))
                 return;
 
@@ -1139,6 +1134,22 @@ void wiphy_update_regulatory(struct wiphy *wiphy,
                 wiphy->reg_notifier(wiphy, last_request);
 }
 
+void regulatory_update(struct wiphy *wiphy,
+                       enum nl80211_reg_initiator setby)
+{
+        mutex_lock(&reg_mutex);
+        wiphy_update_regulatory(wiphy, setby);
+        mutex_unlock(&reg_mutex);
+}
+
+static void update_all_wiphy_regulatory(enum nl80211_reg_initiator initiator)
+{
+        struct cfg80211_registered_device *rdev;
+
+        list_for_each_entry(rdev, &cfg80211_rdev_list, list)
+                wiphy_update_regulatory(&rdev->wiphy, initiator);
+}
+
 static void handle_channel_custom(struct wiphy *wiphy,
                                   enum ieee80211_band band,
                                   unsigned int chan_idx,
@@ -1475,7 +1486,7 @@ static void reg_process_pending_hints(void)
         /* When last_request->processed becomes true this will be rescheduled */
         if (last_request && !last_request->processed) {
                 REG_DBG_PRINT("Pending regulatory request, waiting "
-                              "for it to be processed...");
+                              "for it to be processed...\n");
                 goto out;
         }
 
@@ -2188,7 +2199,7 @@ out:
 static void reg_timeout_work(struct work_struct *work)
 {
         REG_DBG_PRINT("Timeout while waiting for CRDA to reply, "
-                      "restoring regulatory settings");
+                      "restoring regulatory settings\n");
         restore_regulatory_settings(true);
 }
 
diff --git a/net/wireless/reg.h b/net/wireless/reg.h
index b67d1c3a2fb9..4a56799d868d 100644
--- a/net/wireless/reg.h
+++ b/net/wireless/reg.h
@@ -16,6 +16,8 @@ void regulatory_exit(void);
 
 int set_regdom(const struct ieee80211_regdomain *rd);
 
+void regulatory_update(struct wiphy *wiphy, enum nl80211_reg_initiator setby);
+
 /**
  * regulatory_hint_found_beacon - hints a beacon was found on a channel
  * @wiphy: the wireless device where the beacon was found on
diff --git a/net/wireless/scan.c b/net/wireless/scan.c
index 2936cb809152..0fb142410404 100644
--- a/net/wireless/scan.c
+++ b/net/wireless/scan.c
@@ -12,6 +12,7 @@
 #include <linux/etherdevice.h>
 #include <net/arp.h>
 #include <net/cfg80211.h>
+#include <net/cfg80211-wext.h>
 #include <net/iw_handler.h>
 #include "core.h"
 #include "nl80211.h"
@@ -227,6 +228,33 @@ const u8 *cfg80211_find_ie(u8 eid, const u8 *ies, int len)
 }
 EXPORT_SYMBOL(cfg80211_find_ie);
 
+const u8 *cfg80211_find_vendor_ie(unsigned int oui, u8 oui_type,
+                                  const u8 *ies, int len)
+{
+        struct ieee80211_vendor_ie *ie;
+        const u8 *pos = ies, *end = ies + len;
+        int ie_oui;
+
+        while (pos < end) {
+                pos = cfg80211_find_ie(WLAN_EID_VENDOR_SPECIFIC, pos,
+                                       end - pos);
+                if (!pos)
+                        return NULL;
+
+                if (end - pos < sizeof(*ie))
+                        return NULL;
+
+                ie = (struct ieee80211_vendor_ie *)pos;
+                ie_oui = ie->oui[0] << 16 | ie->oui[1] << 8 | ie->oui[2];
+                if (ie_oui == oui && ie->oui_type == oui_type)
+                        return pos;
+
+                pos += 2 + ie->len;
+        }
+        return NULL;
+}
+EXPORT_SYMBOL(cfg80211_find_vendor_ie);
+
 static int cmp_ies(u8 num, u8 *ies1, size_t len1, u8 *ies2, size_t len2)
 {
         const u8 *ie1 = cfg80211_find_ie(num, ies1, len1);
diff --git a/net/wireless/sme.c b/net/wireless/sme.c
index dec0fa28372e..0acfdc9beacf 100644
--- a/net/wireless/sme.c
+++ b/net/wireless/sme.c
@@ -10,6 +10,7 @@
 #include <linux/slab.h>
 #include <linux/workqueue.h>
 #include <linux/wireless.h>
+#include <linux/export.h>
 #include <net/iw_handler.h>
 #include <net/cfg80211.h>
 #include <net/rtnetlink.h>
@@ -110,17 +111,22 @@ static int cfg80211_conn_scan(struct wireless_dev *wdev)
         else {
                 int i = 0, j;
                 enum ieee80211_band band;
+                struct ieee80211_supported_band *bands;
+                struct ieee80211_channel *channel;
 
                 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
-                        if (!wdev->wiphy->bands[band])
+                        bands = wdev->wiphy->bands[band];
+                        if (!bands)
                                 continue;
-                        for (j = 0; j < wdev->wiphy->bands[band]->n_channels;
-                             i++, j++)
-                                request->channels[i] =
-                                        &wdev->wiphy->bands[band]->channels[j];
-                        request->rates[band] =
-                                (1 << wdev->wiphy->bands[band]->n_bitrates) - 1;
+                        for (j = 0; j < bands->n_channels; j++) {
+                                channel = &bands->channels[j];
+                                if (channel->flags & IEEE80211_CHAN_DISABLED)
+                                        continue;
+                                request->channels[i++] = channel;
+                        }
+                        request->rates[band] = (1 << bands->n_bitrates) - 1;
                 }
+                n_channels = i;
         }
         request->n_channels = n_channels;
         request->ssids = (void *)&request->channels[n_channels];
diff --git a/net/wireless/util.c b/net/wireless/util.c
index be75a3a0424e..4dde429441d2 100644
--- a/net/wireless/util.c
+++ b/net/wireless/util.c
@@ -3,9 +3,11 @@
  *
  * Copyright 2007-2009  Johannes Berg <johannes@sipsolutions.net>
  */
+#include <linux/export.h>
 #include <linux/bitops.h>
 #include <linux/etherdevice.h>
 #include <linux/slab.h>
+#include <linux/crc32.h>
 #include <net/cfg80211.h>
 #include <net/ip.h>
 #include "core.h"
@@ -150,12 +152,19 @@ void ieee80211_set_bitrate_flags(struct wiphy *wiphy)
                         set_mandatory_flags_band(wiphy->bands[band], band);
 }
 
+bool cfg80211_supported_cipher_suite(struct wiphy *wiphy, u32 cipher)
+{
+        int i;
+        for (i = 0; i < wiphy->n_cipher_suites; i++)
+                if (cipher == wiphy->cipher_suites[i])
+                        return true;
+        return false;
+}
+
 int cfg80211_validate_key_settings(struct cfg80211_registered_device *rdev,
                                    struct key_params *params, int key_idx,
                                    bool pairwise, const u8 *mac_addr)
 {
-        int i;
-
         if (key_idx > 5)
                 return -EINVAL;
 
@@ -225,10 +234,7 @@ int cfg80211_validate_key_settings(struct cfg80211_registered_device *rdev,
                 }
         }
 
-        for (i = 0; i < rdev->wiphy.n_cipher_suites; i++)
-                if (params->cipher == rdev->wiphy.cipher_suites[i])
-                        break;
-        if (i == rdev->wiphy.n_cipher_suites)
+        if (!cfg80211_supported_cipher_suite(&rdev->wiphy, params->cipher))
                 return -EINVAL;
 
         return 0;
@@ -391,8 +397,9 @@ int ieee80211_data_to_8023(struct sk_buff *skb, const u8 *addr,
                 }
                 break;
         case cpu_to_le16(0):
-                if (iftype != NL80211_IFTYPE_ADHOC)
-                        return -1;
+                if (iftype != NL80211_IFTYPE_ADHOC &&
+                    iftype != NL80211_IFTYPE_STATION)
+                                return -1;
                 break;
         }
 
@@ -512,10 +519,9 @@ int ieee80211_data_from_8023(struct sk_buff *skb, const u8 *addr,
                 if (head_need)
                         skb_orphan(skb);
 
-                if (pskb_expand_head(skb, head_need, 0, GFP_ATOMIC)) {
-                        pr_err("failed to reallocate Tx buffer\n");
+                if (pskb_expand_head(skb, head_need, 0, GFP_ATOMIC))
                         return -ENOMEM;
-                }
+
                 skb->truesize += head_need;
         }
 
@@ -1044,3 +1050,170 @@ int ieee80211_get_ratemask(struct ieee80211_supported_band *sband,
 
         return 0;
 }
+
+u32 ieee802_11_parse_elems_crc(u8 *start, size_t len,
+                               struct ieee802_11_elems *elems,
+                               u64 filter, u32 crc)
+{
+        size_t left = len;
+        u8 *pos = start;
+        bool calc_crc = filter != 0;
+
+        memset(elems, 0, sizeof(*elems));
+        elems->ie_start = start;
+        elems->total_len = len;
+
+        while (left >= 2) {
+                u8 id, elen;
+
+                id = *pos++;
+                elen = *pos++;
+                left -= 2;
+
+                if (elen > left)
+                        break;
+
+                if (calc_crc && id < 64 && (filter & (1ULL << id)))
+                        crc = crc32_be(crc, pos - 2, elen + 2);
+
+                switch (id) {
+                case WLAN_EID_SSID:
+                        elems->ssid = pos;
+                        elems->ssid_len = elen;
+                        break;
+                case WLAN_EID_SUPP_RATES:
+                        elems->supp_rates = pos;
+                        elems->supp_rates_len = elen;
+                        break;
+                case WLAN_EID_FH_PARAMS:
+                        elems->fh_params = pos;
+                        elems->fh_params_len = elen;
+                        break;
+                case WLAN_EID_DS_PARAMS:
+                        elems->ds_params = pos;
+                        elems->ds_params_len = elen;
+                        break;
+                case WLAN_EID_CF_PARAMS:
+                        elems->cf_params = pos;
+                        elems->cf_params_len = elen;
+                        break;
+                case WLAN_EID_TIM:
+                        if (elen >= sizeof(struct ieee80211_tim_ie)) {
+                                elems->tim = (void *)pos;
+                                elems->tim_len = elen;
+                        }
+                        break;
+                case WLAN_EID_IBSS_PARAMS:
+                        elems->ibss_params = pos;
+                        elems->ibss_params_len = elen;
+                        break;
+                case WLAN_EID_CHALLENGE:
+                        elems->challenge = pos;
+                        elems->challenge_len = elen;
+                        break;
+                case WLAN_EID_VENDOR_SPECIFIC:
+                        if (elen >= 4 && pos[0] == 0x00 && pos[1] == 0x50 &&
+                            pos[2] == 0xf2) {
+                                /* Microsoft OUI (00:50:F2) */
+
+                                if (calc_crc)
+                                        crc = crc32_be(crc, pos - 2, elen + 2);
+
+                                if (pos[3] == 1) {
+                                        /* OUI Type 1 - WPA IE */
+                                        elems->wpa = pos;
+                                        elems->wpa_len = elen;
+                                } else if (elen >= 5 && pos[3] == 2) {
+                                        /* OUI Type 2 - WMM IE */
+                                        if (pos[4] == 0) {
+                                                elems->wmm_info = pos;
+                                                elems->wmm_info_len = elen;
+                                        } else if (pos[4] == 1) {
+                                                elems->wmm_param = pos;
+                                                elems->wmm_param_len = elen;
+                                        }
+                                }
+                        }
+                        break;
+                case WLAN_EID_RSN:
+                        elems->rsn = pos;
+                        elems->rsn_len = elen;
+                        break;
+                case WLAN_EID_ERP_INFO:
+                        elems->erp_info = pos;
+                        elems->erp_info_len = elen;
+                        break;
+                case WLAN_EID_EXT_SUPP_RATES:
+                        elems->ext_supp_rates = pos;
+                        elems->ext_supp_rates_len = elen;
+                        break;
+                case WLAN_EID_HT_CAPABILITY:
+                        if (elen >= sizeof(struct ieee80211_ht_cap))
+                                elems->ht_cap_elem = (void *)pos;
+                        break;
+                case WLAN_EID_HT_INFORMATION:
+                        if (elen >= sizeof(struct ieee80211_ht_info))
+                                elems->ht_info_elem = (void *)pos;
+                        break;
+                case WLAN_EID_MESH_ID:
+                        elems->mesh_id = pos;
+                        elems->mesh_id_len = elen;
+                        break;
+                case WLAN_EID_MESH_CONFIG:
+                        if (elen >= sizeof(struct ieee80211_meshconf_ie))
+                                elems->mesh_config = (void *)pos;
+                        break;
+                case WLAN_EID_PEER_MGMT:
+                        elems->peering = pos;
+                        elems->peering_len = elen;
+                        break;
+                case WLAN_EID_PREQ:
+                        elems->preq = pos;
+                        elems->preq_len = elen;
+                        break;
+                case WLAN_EID_PREP:
+                        elems->prep = pos;
+                        elems->prep_len = elen;
+                        break;
+                case WLAN_EID_PERR:
+                        elems->perr = pos;
+                        elems->perr_len = elen;
+                        break;
+                case WLAN_EID_RANN:
+                        if (elen >= sizeof(struct ieee80211_rann_ie))
+                                elems->rann = (void *)pos;
+                        break;
+                case WLAN_EID_CHANNEL_SWITCH:
+                        elems->ch_switch_elem = pos;
+                        elems->ch_switch_elem_len = elen;
+                        break;
+                case WLAN_EID_QUIET:
+                        if (!elems->quiet_elem) {
+                                elems->quiet_elem = pos;
+                                elems->quiet_elem_len = elen;
+                        }
+                        elems->num_of_quiet_elem++;
+                        break;
+                case WLAN_EID_COUNTRY:
+                        elems->country_elem = pos;
+                        elems->country_elem_len = elen;
+                        break;
+                case WLAN_EID_PWR_CONSTRAINT:
+                        elems->pwr_constr_elem = pos;
+                        elems->pwr_constr_elem_len = elen;
+                        break;
+                case WLAN_EID_TIMEOUT_INTERVAL:
+                        elems->timeout_int = pos;
+                        elems->timeout_int_len = elen;
+                        break;
+                default:
+                        break;
+                }
+
+                left -= elen;
+                pos += elen;
+        }
+
+        return crc;
+}
+EXPORT_SYMBOL(ieee802_11_parse_elems_crc);
diff --git a/net/wireless/wext-compat.c b/net/wireless/wext-compat.c
index 0bf169bb770e..6897436b1d3f 100644
--- a/net/wireless/wext-compat.c
+++ b/net/wireless/wext-compat.c
@@ -8,6 +8,7 @@
  * Copyright 2008-2009  Johannes Berg <johannes@sipsolutions.net>
  */
 
+#include <linux/export.h>
 #include <linux/wireless.h>
 #include <linux/nl80211.h>
 #include <linux/if_arp.h>
@@ -15,6 +16,7 @@
 #include <linux/slab.h>
 #include <net/iw_handler.h>
 #include <net/cfg80211.h>
+#include <net/cfg80211-wext.h>
 #include "wext-compat.h"
 #include "core.h"
 
@@ -363,9 +365,9 @@ int cfg80211_wext_giwfrag(struct net_device *dev,
 }
 EXPORT_SYMBOL_GPL(cfg80211_wext_giwfrag);
 
-int cfg80211_wext_siwretry(struct net_device *dev,
-                           struct iw_request_info *info,
-                           struct iw_param *retry, char *extra)
+static int cfg80211_wext_siwretry(struct net_device *dev,
+                                  struct iw_request_info *info,
+                                  struct iw_param *retry, char *extra)
 {
         struct wireless_dev *wdev = dev->ieee80211_ptr;
         struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
@@ -402,7 +404,6 @@ int cfg80211_wext_siwretry(struct net_device *dev,
 
         return err;
 }
-EXPORT_SYMBOL_GPL(cfg80211_wext_siwretry);
 
 int cfg80211_wext_giwretry(struct net_device *dev,
                            struct iw_request_info *info,
@@ -593,9 +594,9 @@ static int cfg80211_set_encryption(struct cfg80211_registered_device *rdev,
         return err;
 }
 
-int cfg80211_wext_siwencode(struct net_device *dev,
-                            struct iw_request_info *info,
-                            struct iw_point *erq, char *keybuf)
+static int cfg80211_wext_siwencode(struct net_device *dev,
+                                   struct iw_request_info *info,
+                                   struct iw_point *erq, char *keybuf)
 {
         struct wireless_dev *wdev = dev->ieee80211_ptr;
         struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
@@ -652,11 +653,10 @@ int cfg80211_wext_siwencode(struct net_device *dev,
                                        wdev->wext.default_key == -1,
                                        idx, &params);
 }
-EXPORT_SYMBOL_GPL(cfg80211_wext_siwencode);
 
-int cfg80211_wext_siwencodeext(struct net_device *dev,
-                               struct iw_request_info *info,
-                               struct iw_point *erq, char *extra)
+static int cfg80211_wext_siwencodeext(struct net_device *dev,
+                                      struct iw_request_info *info,
+                                      struct iw_point *erq, char *extra)
 {
         struct wireless_dev *wdev = dev->ieee80211_ptr;
         struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
@@ -744,11 +744,10 @@ int cfg80211_wext_siwencodeext(struct net_device *dev,
                         ext->ext_flags & IW_ENCODE_EXT_SET_TX_KEY,
                         idx, &params);
 }
-EXPORT_SYMBOL_GPL(cfg80211_wext_siwencodeext);
 
-int cfg80211_wext_giwencode(struct net_device *dev,
-                            struct iw_request_info *info,
-                            struct iw_point *erq, char *keybuf)
+static int cfg80211_wext_giwencode(struct net_device *dev,
+                                   struct iw_request_info *info,
+                                   struct iw_point *erq, char *keybuf)
 {
         struct wireless_dev *wdev = dev->ieee80211_ptr;
         int idx;
@@ -782,11 +781,10 @@ int cfg80211_wext_giwencode(struct net_device *dev,
 
         return 0;
 }
-EXPORT_SYMBOL_GPL(cfg80211_wext_giwencode);
 
-int cfg80211_wext_siwfreq(struct net_device *dev,
-                          struct iw_request_info *info,
-                          struct iw_freq *wextfreq, char *extra)
+static int cfg80211_wext_siwfreq(struct net_device *dev,
+                                 struct iw_request_info *info,
+                                 struct iw_freq *wextfreq, char *extra)
 {
         struct wireless_dev *wdev = dev->ieee80211_ptr;
         struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
@@ -815,11 +813,10 @@ int cfg80211_wext_siwfreq(struct net_device *dev,
                 return -EOPNOTSUPP;
         }
 }
-EXPORT_SYMBOL_GPL(cfg80211_wext_siwfreq);
 
-int cfg80211_wext_giwfreq(struct net_device *dev,
-                          struct iw_request_info *info,
-                          struct iw_freq *freq, char *extra)
+static int cfg80211_wext_giwfreq(struct net_device *dev,
+                                 struct iw_request_info *info,
+                                 struct iw_freq *freq, char *extra)
 {
         struct wireless_dev *wdev = dev->ieee80211_ptr;
 
@@ -836,11 +833,10 @@ int cfg80211_wext_giwfreq(struct net_device *dev,
                 return 0;
         }
 }
-EXPORT_SYMBOL_GPL(cfg80211_wext_giwfreq);
 
-int cfg80211_wext_siwtxpower(struct net_device *dev,
-                             struct iw_request_info *info,
-                             union iwreq_data *data, char *extra)
+static int cfg80211_wext_siwtxpower(struct net_device *dev,
+                                    struct iw_request_info *info,
+                                    union iwreq_data *data, char *extra)
 {
         struct wireless_dev *wdev = dev->ieee80211_ptr;
         struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
@@ -889,11 +885,10 @@ int cfg80211_wext_siwtxpower(struct net_device *dev,
 
         return rdev->ops->set_tx_power(wdev->wiphy, type, DBM_TO_MBM(dbm));
 }
-EXPORT_SYMBOL_GPL(cfg80211_wext_siwtxpower);
 
-int cfg80211_wext_giwtxpower(struct net_device *dev,
-                             struct iw_request_info *info,
-                             union iwreq_data *data, char *extra)
+static int cfg80211_wext_giwtxpower(struct net_device *dev,
+                                    struct iw_request_info *info,
+                                    union iwreq_data *data, char *extra)
 {
         struct wireless_dev *wdev = dev->ieee80211_ptr;
         struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
@@ -919,7 +914,6 @@ int cfg80211_wext_giwtxpower(struct net_device *dev,
 
         return 0;
 }
-EXPORT_SYMBOL_GPL(cfg80211_wext_giwtxpower);
 
 static int cfg80211_set_auth_alg(struct wireless_dev *wdev,
                                  s32 auth_alg)
@@ -1070,9 +1064,9 @@ static int cfg80211_set_key_mgt(struct wireless_dev *wdev, u32 key_mgt)
         return 0;
 }
 
-int cfg80211_wext_siwauth(struct net_device *dev,
-                          struct iw_request_info *info,
-                          struct iw_param *data, char *extra)
+static int cfg80211_wext_siwauth(struct net_device *dev,
+                                 struct iw_request_info *info,
+                                 struct iw_param *data, char *extra)
 {
         struct wireless_dev *wdev = dev->ieee80211_ptr;
 
@@ -1102,21 +1096,19 @@ int cfg80211_wext_siwauth(struct net_device *dev,
                 return -EOPNOTSUPP;
         }
 }
-EXPORT_SYMBOL_GPL(cfg80211_wext_siwauth);
 
-int cfg80211_wext_giwauth(struct net_device *dev,
-                          struct iw_request_info *info,
-                          struct iw_param *data, char *extra)
+static int cfg80211_wext_giwauth(struct net_device *dev,
+                                 struct iw_request_info *info,
+                                 struct iw_param *data, char *extra)
 {
         /* XXX: what do we need? */
 
         return -EOPNOTSUPP;
 }
-EXPORT_SYMBOL_GPL(cfg80211_wext_giwauth);
 
-int cfg80211_wext_siwpower(struct net_device *dev,
-                           struct iw_request_info *info,
-                           struct iw_param *wrq, char *extra)
+static int cfg80211_wext_siwpower(struct net_device *dev,
+                                  struct iw_request_info *info,
+                                  struct iw_param *wrq, char *extra)
 {
         struct wireless_dev *wdev = dev->ieee80211_ptr;
         struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
@@ -1160,11 +1152,10 @@ int cfg80211_wext_siwpower(struct net_device *dev,
         return 0;
 
 }
-EXPORT_SYMBOL_GPL(cfg80211_wext_siwpower);
 
-int cfg80211_wext_giwpower(struct net_device *dev,
-                           struct iw_request_info *info,
-                           struct iw_param *wrq, char *extra)
+static int cfg80211_wext_giwpower(struct net_device *dev,
+                                  struct iw_request_info *info,
+                                  struct iw_param *wrq, char *extra)
 {
         struct wireless_dev *wdev = dev->ieee80211_ptr;
 
@@ -1172,7 +1163,6 @@ int cfg80211_wext_giwpower(struct net_device *dev,
 
         return 0;
 }
-EXPORT_SYMBOL_GPL(cfg80211_wext_giwpower);
 
 static int cfg80211_wds_wext_siwap(struct net_device *dev,
                                    struct iw_request_info *info,
@@ -1218,9 +1208,9 @@ static int cfg80211_wds_wext_giwap(struct net_device *dev,
         return 0;
 }
 
-int cfg80211_wext_siwrate(struct net_device *dev,
-                          struct iw_request_info *info,
-                          struct iw_param *rate, char *extra)
+static int cfg80211_wext_siwrate(struct net_device *dev,
+                                 struct iw_request_info *info,
+                                 struct iw_param *rate, char *extra)
 {
         struct wireless_dev *wdev = dev->ieee80211_ptr;
         struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
@@ -1268,11 +1258,10 @@ int cfg80211_wext_siwrate(struct net_device *dev,
 
         return rdev->ops->set_bitrate_mask(wdev->wiphy, dev, NULL, &mask);
 }
-EXPORT_SYMBOL_GPL(cfg80211_wext_siwrate);
 
-int cfg80211_wext_giwrate(struct net_device *dev,
-                          struct iw_request_info *info,
-                          struct iw_param *rate, char *extra)
+static int cfg80211_wext_giwrate(struct net_device *dev,
+                                 struct iw_request_info *info,
+                                 struct iw_param *rate, char *extra)
 {
         struct wireless_dev *wdev = dev->ieee80211_ptr;
         struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
@@ -1308,10 +1297,9 @@ int cfg80211_wext_giwrate(struct net_device *dev,
 
         return 0;
 }
-EXPORT_SYMBOL_GPL(cfg80211_wext_giwrate);
 
 /* Get wireless statistics.  Called by /proc/net/wireless and by SIOCGIWSTATS */
-struct iw_statistics *cfg80211_wireless_stats(struct net_device *dev)
+static struct iw_statistics *cfg80211_wireless_stats(struct net_device *dev)
 {
         struct wireless_dev *wdev = dev->ieee80211_ptr;
         struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
@@ -1376,11 +1364,10 @@ struct iw_statistics *cfg80211_wireless_stats(struct net_device *dev)
 
         return &wstats;
 }
-EXPORT_SYMBOL_GPL(cfg80211_wireless_stats);
 
-int cfg80211_wext_siwap(struct net_device *dev,
-                        struct iw_request_info *info,
-                        struct sockaddr *ap_addr, char *extra)
+static int cfg80211_wext_siwap(struct net_device *dev,
+                               struct iw_request_info *info,
+                               struct sockaddr *ap_addr, char *extra)
 {
         struct wireless_dev *wdev = dev->ieee80211_ptr;
 
@@ -1395,11 +1382,10 @@ int cfg80211_wext_siwap(struct net_device *dev,
                 return -EOPNOTSUPP;
         }
 }
-EXPORT_SYMBOL_GPL(cfg80211_wext_siwap);
 
-int cfg80211_wext_giwap(struct net_device *dev,
-                        struct iw_request_info *info,
-                        struct sockaddr *ap_addr, char *extra)
+static int cfg80211_wext_giwap(struct net_device *dev,
+                               struct iw_request_info *info,
+                               struct sockaddr *ap_addr, char *extra)
 {
         struct wireless_dev *wdev = dev->ieee80211_ptr;
 
@@ -1414,11 +1400,10 @@ int cfg80211_wext_giwap(struct net_device *dev,
                 return -EOPNOTSUPP;
         }
 }
-EXPORT_SYMBOL_GPL(cfg80211_wext_giwap);
 
-int cfg80211_wext_siwessid(struct net_device *dev,
-                           struct iw_request_info *info,
-                           struct iw_point *data, char *ssid)
+static int cfg80211_wext_siwessid(struct net_device *dev,
+                                  struct iw_request_info *info,
+                                  struct iw_point *data, char *ssid)
 {
         struct wireless_dev *wdev = dev->ieee80211_ptr;
 
@@ -1431,11 +1416,10 @@ int cfg80211_wext_siwessid(struct net_device *dev,
                 return -EOPNOTSUPP;
         }
 }
-EXPORT_SYMBOL_GPL(cfg80211_wext_siwessid);
 
-int cfg80211_wext_giwessid(struct net_device *dev,
-                           struct iw_request_info *info,
-                           struct iw_point *data, char *ssid)
+static int cfg80211_wext_giwessid(struct net_device *dev,
+                                  struct iw_request_info *info,
+                                  struct iw_point *data, char *ssid)
 {
         struct wireless_dev *wdev = dev->ieee80211_ptr;
 
@@ -1451,11 +1435,10 @@ int cfg80211_wext_giwessid(struct net_device *dev,
                 return -EOPNOTSUPP;
         }
 }
-EXPORT_SYMBOL_GPL(cfg80211_wext_giwessid);
 
-int cfg80211_wext_siwpmksa(struct net_device *dev,
-                           struct iw_request_info *info,
-                           struct iw_point *data, char *extra)
+static int cfg80211_wext_siwpmksa(struct net_device *dev,
+                                  struct iw_request_info *info,
+                                  struct iw_point *data, char *extra)
 {
         struct wireless_dev *wdev = dev->ieee80211_ptr;
         struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
@@ -1493,7 +1476,6 @@ int cfg80211_wext_siwpmksa(struct net_device *dev,
                 return -EOPNOTSUPP;
         }
 }
-EXPORT_SYMBOL_GPL(cfg80211_wext_siwpmksa);
 
 static const iw_handler cfg80211_handlers[] = {
         [IW_IOCTL_IDX(SIOCGIWNAME)]     = (iw_handler) cfg80211_wext_giwname,
diff --git a/net/wireless/wext-compat.h b/net/wireless/wext-compat.h
index 20b3daef6964..5d766b0118e8 100644
--- a/net/wireless/wext-compat.h
+++ b/net/wireless/wext-compat.h
@@ -42,6 +42,14 @@ int cfg80211_mgd_wext_giwessid(struct net_device *dev,
                                struct iw_request_info *info,
                                struct iw_point *data, char *ssid);
 
+int cfg80211_wext_siwmlme(struct net_device *dev,
+                          struct iw_request_info *info,
+                          struct iw_point *data, char *extra);
+int cfg80211_wext_siwgenie(struct net_device *dev,
+                           struct iw_request_info *info,
+                           struct iw_point *data, char *extra);
+
+
 int cfg80211_wext_freq(struct wiphy *wiphy, struct iw_freq *freq);
 
 
diff --git a/net/wireless/wext-core.c b/net/wireless/wext-core.c
index fdbc23c10d8c..0af7f54e4f61 100644
--- a/net/wireless/wext-core.c
+++ b/net/wireless/wext-core.c
@@ -13,6 +13,7 @@
 #include <linux/slab.h>
 #include <linux/wireless.h>
 #include <linux/uaccess.h>
+#include <linux/export.h>
 #include <net/cfg80211.h>
 #include <net/iw_handler.h>
 #include <net/netlink.h>
diff --git a/net/wireless/wext-sme.c b/net/wireless/wext-sme.c
index 6fffe62d7c25..326750b99151 100644
--- a/net/wireless/wext-sme.c
+++ b/net/wireless/wext-sme.c
@@ -5,10 +5,12 @@
  * Copyright (C) 2009   Intel Corporation. All rights reserved.
  */
 
+#include <linux/export.h>
 #include <linux/etherdevice.h>
 #include <linux/if_arp.h>
 #include <linux/slab.h>
 #include <net/cfg80211.h>
+#include <net/cfg80211-wext.h>
 #include "wext-compat.h"
 #include "nl80211.h"
 
@@ -365,7 +367,6 @@ int cfg80211_wext_siwgenie(struct net_device *dev,
         wdev_unlock(wdev);
         return err;
 }
-EXPORT_SYMBOL_GPL(cfg80211_wext_siwgenie);
 
 int cfg80211_wext_siwmlme(struct net_device *dev,
                           struct iw_request_info *info,
@@ -402,4 +403,3 @@ int cfg80211_wext_siwmlme(struct net_device *dev,
 
         return err;
 }
-EXPORT_SYMBOL_GPL(cfg80211_wext_siwmlme);
diff --git a/net/wireless/wext-spy.c b/net/wireless/wext-spy.c
index 6dcfe65a2d1a..5d643a548feb 100644
--- a/net/wireless/wext-spy.c
+++ b/net/wireless/wext-spy.c
@@ -10,6 +10,7 @@
 #include <linux/wireless.h>
 #include <linux/netdevice.h>
 #include <linux/etherdevice.h>
+#include <linux/export.h>
 #include <net/iw_handler.h>
 #include <net/arp.h>
 #include <net/wext.h>
diff --git a/net/x25/af_x25.c b/net/x25/af_x25.c
index 5f03e4ea65bf..3e16c6abde4f 100644
--- a/net/x25/af_x25.c
+++ b/net/x25/af_x25.c
@@ -1261,14 +1261,19 @@ static int x25_recvmsg(struct kiocb *iocb, struct socket *sock,
         struct x25_sock *x25 = x25_sk(sk);
         struct sockaddr_x25 *sx25 = (struct sockaddr_x25 *)msg->msg_name;
         size_t copied;
-        int qbit, header_len = x25->neighbour->extended ?
-                X25_EXT_MIN_LEN : X25_STD_MIN_LEN;
-
+        int qbit, header_len;
         struct sk_buff *skb;
         unsigned char *asmptr;
         int rc = -ENOTCONN;
 
         lock_sock(sk);
+
+        if (x25->neighbour == NULL)
+                goto out;
+
+        header_len = x25->neighbour->extended ?
+                X25_EXT_MIN_LEN : X25_STD_MIN_LEN;
+
         /*
          * This works for seqpacket too. The receiver has ordered the queue for
          * us! We do one quick check first though
diff --git a/net/x25/x25_proc.c b/net/x25/x25_proc.c
index 7ff373792324..2ffde4631ae2 100644
--- a/net/x25/x25_proc.c
+++ b/net/x25/x25_proc.c
@@ -20,6 +20,7 @@
 #include <linux/init.h>
 #include <linux/proc_fs.h>
 #include <linux/seq_file.h>
+#include <linux/export.h>
 #include <net/net_namespace.h>
 #include <net/sock.h>
 #include <net/x25.h>
diff --git a/net/xfrm/xfrm_ipcomp.c b/net/xfrm/xfrm_ipcomp.c
index fc91ad7ee26e..e5246fbe36c4 100644
--- a/net/xfrm/xfrm_ipcomp.c
+++ b/net/xfrm/xfrm_ipcomp.c
@@ -70,26 +70,29 @@ static int ipcomp_decompress(struct xfrm_state *x, struct sk_buff *skb)
 
         while ((scratch += len, dlen -= len) > 0) {
                 skb_frag_t *frag;
+                struct page *page;
 
                 err = -EMSGSIZE;
                 if (WARN_ON(skb_shinfo(skb)->nr_frags >= MAX_SKB_FRAGS))
                         goto out;
 
                 frag = skb_shinfo(skb)->frags + skb_shinfo(skb)->nr_frags;
-                frag->page = alloc_page(GFP_ATOMIC);
+                page = alloc_page(GFP_ATOMIC);
 
                 err = -ENOMEM;
-                if (!frag->page)
+                if (!page)
                         goto out;
 
+                __skb_frag_set_page(frag, page);
+
                 len = PAGE_SIZE;
                 if (dlen < len)
                         len = dlen;
 
-                memcpy(page_address(frag->page), scratch, len);
-
                 frag->page_offset = 0;
-                frag->size = len;
+                skb_frag_size_set(frag, len);
+                memcpy(skb_frag_address(frag), scratch, len);
+
                 skb->truesize += len;
                 skb->data_len += len;
                 skb->len += len;
diff --git a/net/xfrm/xfrm_proc.c b/net/xfrm/xfrm_proc.c
index 58d9ae005597..d0a1af8ed584 100644
--- a/net/xfrm/xfrm_proc.c
+++ b/net/xfrm/xfrm_proc.c
@@ -12,6 +12,7 @@
  */
 #include <linux/proc_fs.h>
 #include <linux/seq_file.h>
+#include <linux/export.h>
 #include <net/snmp.h>
 #include <net/xfrm.h>
 
diff --git a/net/xfrm/xfrm_replay.c b/net/xfrm/xfrm_replay.c
index b11ea692bd7d..39e02c54ed26 100644
--- a/net/xfrm/xfrm_replay.c
+++ b/net/xfrm/xfrm_replay.c
@@ -18,6 +18,7 @@
  * 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
  */
 
+#include <linux/export.h>
 #include <net/xfrm.h>
 
 u32 xfrm_replay_seqhi(struct xfrm_state *x, __be32 net_seq)
@@ -203,8 +204,6 @@ static int xfrm_replay_check_bmp(struct xfrm_state *x,
         if (!replay_esn->replay_window)
                 return 0;
 
-        pos = (replay_esn->seq - 1) % replay_esn->replay_window;
-
         if (unlikely(seq == 0))
                 goto err;
 
@@ -216,19 +215,18 @@ static int xfrm_replay_check_bmp(struct xfrm_state *x,
                 goto err;
         }
 
-        if (pos >= diff) {
+        pos = (replay_esn->seq - 1) % replay_esn->replay_window;
+
+        if (pos >= diff)
                 bitnr = (pos - diff) % replay_esn->replay_window;
-                nr = bitnr >> 5;
-                bitnr = bitnr & 0x1F;
-                if (replay_esn->bmp[nr] & (1U << bitnr))
-                        goto err_replay;
-        } else {
+        else
                 bitnr = replay_esn->replay_window - (diff - pos);
-                nr = bitnr >> 5;
-                bitnr = bitnr & 0x1F;
-                if (replay_esn->bmp[nr] & (1U << bitnr))
-                        goto err_replay;
-        }
+
+        nr = bitnr >> 5;
+        bitnr = bitnr & 0x1F;
+        if (replay_esn->bmp[nr] & (1U << bitnr))
+                goto err_replay;
+
         return 0;
 
 err_replay:
@@ -259,39 +257,27 @@ static void xfrm_replay_advance_bmp(struct xfrm_state *x, __be32 net_seq)
                                 bitnr = bitnr & 0x1F;
                                 replay_esn->bmp[nr] &=  ~(1U << bitnr);
                         }
-
-                        bitnr = (pos + diff) % replay_esn->replay_window;
-                        nr = bitnr >> 5;
-                        bitnr = bitnr & 0x1F;
-                        replay_esn->bmp[nr] |= (1U << bitnr);
                 } else {
                         nr = (replay_esn->replay_window - 1) >> 5;
                         for (i = 0; i <= nr; i++)
                                 replay_esn->bmp[i] = 0;
-
-                        bitnr = (pos + diff) % replay_esn->replay_window;
-                        nr = bitnr >> 5;
-                        bitnr = bitnr & 0x1F;
-                        replay_esn->bmp[nr] |= (1U << bitnr);
                 }
 
+                bitnr = (pos + diff) % replay_esn->replay_window;
                 replay_esn->seq = seq;
         } else {
                 diff = replay_esn->seq - seq;
 
-                if (pos >= diff) {
+                if (pos >= diff)
                         bitnr = (pos - diff) % replay_esn->replay_window;
-                        nr = bitnr >> 5;
-                        bitnr = bitnr & 0x1F;
-                        replay_esn->bmp[nr] |= (1U << bitnr);
-                } else {
+                else
                         bitnr = replay_esn->replay_window - (diff - pos);
-                        nr = bitnr >> 5;
-                        bitnr = bitnr & 0x1F;
-                        replay_esn->bmp[nr] |= (1U << bitnr);
-                }
         }
 
+        nr = bitnr >> 5;
+        bitnr = bitnr & 0x1F;
+        replay_esn->bmp[nr] |= (1U << bitnr);
+
         if (xfrm_aevent_is_on(xs_net(x)))
                 xfrm_replay_notify(x, XFRM_REPLAY_UPDATE);
 }
@@ -390,8 +376,6 @@ static int xfrm_replay_check_esn(struct xfrm_state *x,
         if (!wsize)
                 return 0;
 
-        pos = (replay_esn->seq - 1) % replay_esn->replay_window;
-
         if (unlikely(seq == 0 && replay_esn->seq_hi == 0 &&
                      (replay_esn->seq < replay_esn->replay_window - 1)))
                 goto err;
@@ -415,19 +399,18 @@ static int xfrm_replay_check_esn(struct xfrm_state *x,
                 goto err;
         }
 
-        if (pos >= diff) {
+        pos = (replay_esn->seq - 1) % replay_esn->replay_window;
+
+        if (pos >= diff)
                 bitnr = (pos - diff) % replay_esn->replay_window;
-                nr = bitnr >> 5;
-                bitnr = bitnr & 0x1F;
-                if (replay_esn->bmp[nr] & (1U << bitnr))
-                        goto err_replay;
-        } else {
+        else
                 bitnr = replay_esn->replay_window - (diff - pos);
-                nr = bitnr >> 5;
-                bitnr = bitnr & 0x1F;
-                if (replay_esn->bmp[nr] & (1U << bitnr))
-                        goto err_replay;
-        }
+
+        nr = bitnr >> 5;
+        bitnr = bitnr & 0x1F;
+        if (replay_esn->bmp[nr] & (1U << bitnr))
+                goto err_replay;
+
         return 0;
 
 err_replay:
@@ -465,22 +448,13 @@ static void xfrm_replay_advance_esn(struct xfrm_state *x, __be32 net_seq)
                                 bitnr = bitnr & 0x1F;
                                 replay_esn->bmp[nr] &=  ~(1U << bitnr);
                         }
-
-                        bitnr = (pos + diff) % replay_esn->replay_window;
-                        nr = bitnr >> 5;
-                        bitnr = bitnr & 0x1F;
-                        replay_esn->bmp[nr] |= (1U << bitnr);
                 } else {
                         nr = (replay_esn->replay_window - 1) >> 5;
                         for (i = 0; i <= nr; i++)
                                 replay_esn->bmp[i] = 0;
-
-                        bitnr = (pos + diff) % replay_esn->replay_window;
-                        nr = bitnr >> 5;
-                        bitnr = bitnr & 0x1F;
-                        replay_esn->bmp[nr] |= (1U << bitnr);
                 }
 
+                bitnr = (pos + diff) % replay_esn->replay_window;
                 replay_esn->seq = seq;
 
                 if (unlikely(wrap > 0))
@@ -488,19 +462,16 @@ static void xfrm_replay_advance_esn(struct xfrm_state *x, __be32 net_seq)
         } else {
                 diff = replay_esn->seq - seq;
 
-                if (pos >= diff) {
+                if (pos >= diff)
                         bitnr = (pos - diff) % replay_esn->replay_window;
-                        nr = bitnr >> 5;
-                        bitnr = bitnr & 0x1F;
-                        replay_esn->bmp[nr] |= (1U << bitnr);
-                } else {
+                else
                         bitnr = replay_esn->replay_window - (diff - pos);
-                        nr = bitnr >> 5;
-                        bitnr = bitnr & 0x1F;
-                        replay_esn->bmp[nr] |= (1U << bitnr);
-                }
         }
 
+        nr = bitnr >> 5;
+        bitnr = bitnr & 0x1F;
+        replay_esn->bmp[nr] |= (1U << bitnr);
+
         if (xfrm_aevent_is_on(xs_net(x)))
                 xfrm_replay_notify(x, XFRM_REPLAY_UPDATE);
 }
diff --git a/net/xfrm/xfrm_user.c b/net/xfrm/xfrm_user.c
index 0256b8a0a7cf..d0a42df5160e 100644
--- a/net/xfrm/xfrm_user.c
+++ b/net/xfrm/xfrm_user.c
@@ -2927,7 +2927,7 @@ static int __net_init xfrm_user_net_init(struct net *net)
         if (nlsk == NULL)
                 return -ENOMEM;
         net->xfrm.nlsk_stash = nlsk; /* Don't set to NULL */
-        rcu_assign_pointer(net->xfrm.nlsk, nlsk);
+        RCU_INIT_POINTER(net->xfrm.nlsk, nlsk);
         return 0;
 }
 
@@ -2935,7 +2935,7 @@ static void __net_exit xfrm_user_net_exit(struct list_head *net_exit_list)
 {
         struct net *net;
         list_for_each_entry(net, net_exit_list, exit_list)
-                rcu_assign_pointer(net->xfrm.nlsk, NULL);
+                RCU_INIT_POINTER(net->xfrm.nlsk, NULL);
         synchronize_net();
         list_for_each_entry(net, net_exit_list, exit_list)
                 netlink_kernel_release(net->xfrm.nlsk_stash);