348 files changed, 11503 insertions, 8206 deletions

diff --git a/net/8021q/vlan.c b/net/8021q/vlan.c
index 9424f3718ea7..2fb2d88e8c2e 100644
--- a/net/8021q/vlan.c
+++ b/net/8021q/vlan.c
@@ -341,7 +341,7 @@ static void __vlan_device_event(struct net_device *dev, unsigned long event)
 static int vlan_device_event(struct notifier_block *unused, unsigned long event,
                              void *ptr)
 {
-        struct net_device *dev = ptr;
+        struct net_device *dev = netdev_notifier_info_to_dev(ptr);
         struct vlan_group *grp;
         struct vlan_info *vlan_info;
         int i, flgs;
diff --git a/net/9p/client.c b/net/9p/client.c
index addc116cecf0..8b93cae2d11d 100644
--- a/net/9p/client.c
+++ b/net/9p/client.c
@@ -127,7 +127,7 @@ static int parse_opts(char *opts, struct p9_client *clnt)
         char *s;
         int ret = 0;
 
-        clnt->proto_version = p9_proto_2000u;
+        clnt->proto_version = p9_proto_2000L;
         clnt->msize = 8192;
 
         if (!opts)
@@ -204,6 +204,17 @@ free_and_return:
         return ret;
 }
 
+struct p9_fcall *p9_fcall_alloc(int alloc_msize)
+{
+        struct p9_fcall *fc;
+        fc = kmalloc(sizeof(struct p9_fcall) + alloc_msize, GFP_NOFS);
+        if (!fc)
+                return NULL;
+        fc->capacity = alloc_msize;
+        fc->sdata = (char *) fc + sizeof(struct p9_fcall);
+        return fc;
+}
+
 /**
  * p9_tag_alloc - lookup/allocate a request by tag
  * @c: client session to lookup tag within
@@ -256,39 +267,36 @@ p9_tag_alloc(struct p9_client *c, u16 tag, unsigned int max_size)
         col = tag % P9_ROW_MAXTAG;
 
         req = &c->reqs[row][col];
-        if (!req->tc) {
+        if (!req->wq) {
                 req->wq = kmalloc(sizeof(wait_queue_head_t), GFP_NOFS);
-                if (!req->wq) {
-                        pr_err("Couldn't grow tag array\n");
-                        return ERR_PTR(-ENOMEM);
-                }
+                if (!req->wq)
+                        goto grow_failed;
                 init_waitqueue_head(req->wq);
-                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)) {
-                        pr_err("Couldn't grow tag array\n");
-                        kfree(req->tc);
-                        kfree(req->rc);
-                        kfree(req->wq);
-                        req->tc = req->rc = NULL;
-                        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);
         }
 
+        if (!req->tc)
+                req->tc = p9_fcall_alloc(alloc_msize);
+        if (!req->rc)
+                req->rc = p9_fcall_alloc(alloc_msize);
+        if (!req->tc || !req->rc)
+                goto grow_failed;
+
         p9pdu_reset(req->tc);
         p9pdu_reset(req->rc);
 
         req->tc->tag = tag-1;
         req->status = REQ_STATUS_ALLOC;
 
-        return &c->reqs[row][col];
+        return req;
+
+grow_failed:
+        pr_err("Couldn't grow tag array\n");
+        kfree(req->tc);
+        kfree(req->rc);
+        kfree(req->wq);
+        req->tc = req->rc = NULL;
+        req->wq = NULL;
+        return ERR_PTR(-ENOMEM);
 }
 
 /**
@@ -648,12 +656,20 @@ static int p9_client_flush(struct p9_client *c, struct p9_req_t *oldreq)
                 return PTR_ERR(req);
 
 
-        /* if we haven't received a response for oldreq,
-           remove it from the list. */
+        /*
+         * if we haven't received a response for oldreq,
+         * remove it from the list, and notify the transport
+         * layer that the reply will never arrive.
+         */
         spin_lock(&c->lock);
-        if (oldreq->status == REQ_STATUS_FLSH)
+        if (oldreq->status == REQ_STATUS_FLSH) {
                 list_del(&oldreq->req_list);
-        spin_unlock(&c->lock);
+                spin_unlock(&c->lock);
+                if (c->trans_mod->cancelled)
+                        c->trans_mod->cancelled(c, req);
+        } else {
+                spin_unlock(&c->lock);
+        }
 
         p9_free_req(c, req);
         return 0;
@@ -996,6 +1012,9 @@ struct p9_client *p9_client_create(const char *dev_name, char *options)
                 goto destroy_tagpool;
 
         if (!clnt->trans_mod)
+                clnt->trans_mod = v9fs_get_trans_by_name("virtio");
+
+        if (!clnt->trans_mod)
                 clnt->trans_mod = v9fs_get_default_trans();
 
         if (clnt->trans_mod == NULL) {
diff --git a/net/9p/trans_fd.c b/net/9p/trans_fd.c
index 02efb25c2957..3ffda1b3799b 100644
--- a/net/9p/trans_fd.c
+++ b/net/9p/trans_fd.c
@@ -63,6 +63,7 @@ struct p9_fd_opts {
         int rfd;
         int wfd;
         u16 port;
+        int privport;
 };
 
 /**
@@ -87,12 +88,15 @@ struct p9_trans_fd {
 enum {
         /* Options that take integer arguments */
         Opt_port, Opt_rfdno, Opt_wfdno, Opt_err,
+        /* Options that take no arguments */
+        Opt_privport,
 };
 
 static const match_table_t tokens = {
         {Opt_port, "port=%u"},
         {Opt_rfdno, "rfdno=%u"},
         {Opt_wfdno, "wfdno=%u"},
+        {Opt_privport, "privport"},
         {Opt_err, NULL},
 };
 
@@ -161,6 +165,9 @@ static DEFINE_SPINLOCK(p9_poll_lock);
 static LIST_HEAD(p9_poll_pending_list);
 static DECLARE_WORK(p9_poll_work, p9_poll_workfn);
 
+static unsigned int p9_ipport_resv_min = P9_DEF_MIN_RESVPORT;
+static unsigned int p9_ipport_resv_max = P9_DEF_MAX_RESVPORT;
+
 static void p9_mux_poll_stop(struct p9_conn *m)
 {
         unsigned long flags;
@@ -741,7 +748,7 @@ static int parse_opts(char *params, struct p9_fd_opts *opts)
                 if (!*p)
                         continue;
                 token = match_token(p, tokens, args);
-                if (token != Opt_err) {
+                if ((token != Opt_err) && (token != Opt_privport)) {
                         r = match_int(&args[0], &option);
                         if (r < 0) {
                                 p9_debug(P9_DEBUG_ERROR,
@@ -759,6 +766,9 @@ static int parse_opts(char *params, struct p9_fd_opts *opts)
                 case Opt_wfdno:
                         opts->wfd = option;
                         break;
+                case Opt_privport:
+                        opts->privport = 1;
+                        break;
                 default:
                         continue;
                 }
@@ -898,6 +908,24 @@ static inline int valid_ipaddr4(const char *buf)
         return 0;
 }
 
+static int p9_bind_privport(struct socket *sock)
+{
+        struct sockaddr_in cl;
+        int port, err = -EINVAL;
+
+        memset(&cl, 0, sizeof(cl));
+        cl.sin_family = AF_INET;
+        cl.sin_addr.s_addr = INADDR_ANY;
+        for (port = p9_ipport_resv_max; port >= p9_ipport_resv_min; port--) {
+                cl.sin_port = htons((ushort)port);
+                err = kernel_bind(sock, (struct sockaddr *)&cl, sizeof(cl));
+                if (err != -EADDRINUSE)
+                        break;
+        }
+        return err;
+}
+
+
 static int
 p9_fd_create_tcp(struct p9_client *client, const char *addr, char *args)
 {
@@ -926,6 +954,16 @@ p9_fd_create_tcp(struct p9_client *client, const char *addr, char *args)
                 return err;
         }
 
+        if (opts.privport) {
+                err = p9_bind_privport(csocket);
+                if (err < 0) {
+                        pr_err("%s (%d): problem binding to privport\n",
+                               __func__, task_pid_nr(current));
+                        sock_release(csocket);
+                        return err;
+                }
+        }
+
         err = csocket->ops->connect(csocket,
                                     (struct sockaddr *)&sin_server,
                                     sizeof(struct sockaddr_in), 0);
diff --git a/net/9p/trans_rdma.c b/net/9p/trans_rdma.c
index 2c69ddd691a1..928f2bb9bf8d 100644
--- a/net/9p/trans_rdma.c
+++ b/net/9p/trans_rdma.c
@@ -57,9 +57,7 @@
 #define P9_RDMA_IRD             0
 #define P9_RDMA_ORD             0
 #define P9_RDMA_TIMEOUT         30000           /* 30 seconds */
-#define P9_RDMA_MAXSIZE         (4*4096)        /* Min SGE is 4, so we can
-                                                 * safely advertise a maxsize
-                                                 * of 64k */
+#define P9_RDMA_MAXSIZE         (1024*1024)     /* 1MB */
 
 /**
  * struct p9_trans_rdma - RDMA transport instance
@@ -75,7 +73,9 @@
  * @sq_depth: The depth of the Send Queue
  * @sq_sem: Semaphore for the SQ
  * @rq_depth: The depth of the Receive Queue.
- * @rq_count: Count of requests in the Receive Queue.
+ * @rq_sem: Semaphore for the RQ
+ * @excess_rc : Amount of posted Receive Contexts without a pending request.
+ *              See rdma_request()
  * @addr: The remote peer's address
  * @req_lock: Protects the active request list
  * @cm_done: Completion event for connection management tracking
@@ -100,7 +100,8 @@ struct p9_trans_rdma {
         int sq_depth;
         struct semaphore sq_sem;
         int rq_depth;
-        atomic_t rq_count;
+        struct semaphore rq_sem;
+        atomic_t excess_rc;
         struct sockaddr_in addr;
         spinlock_t req_lock;
 
@@ -296,6 +297,13 @@ handle_recv(struct p9_client *client, struct p9_trans_rdma *rdma,
         if (!req)
                 goto err_out;
 
+        /* Check that we have not yet received a reply for this request.
+         */
+        if (unlikely(req->rc)) {
+                pr_err("Duplicate reply for request %d", tag);
+                goto err_out;
+        }
+
         req->rc = c->rc;
         req->status = REQ_STATUS_RCVD;
         p9_client_cb(client, req);
@@ -336,8 +344,8 @@ static void cq_comp_handler(struct ib_cq *cq, void *cq_context)
 
                 switch (c->wc_op) {
                 case IB_WC_RECV:
-                        atomic_dec(&rdma->rq_count);
                         handle_recv(client, rdma, c, wc.status, wc.byte_len);
+                        up(&rdma->rq_sem);
                         break;
 
                 case IB_WC_SEND:
@@ -421,32 +429,33 @@ static int rdma_request(struct p9_client *client, struct p9_req_t *req)
         struct p9_rdma_context *c = NULL;
         struct p9_rdma_context *rpl_context = NULL;
 
+        /* When an error occurs between posting the recv and the send,
+         * there will be a receive context posted without a pending request.
+         * Since there is no way to "un-post" it, we remember it and skip
+         * post_recv() for the next request.
+         * So here,
+         * see if we are this `next request' and need to absorb an excess rc.
+         * If yes, then drop and free our own, and do not recv_post().
+         **/
+        if (unlikely(atomic_read(&rdma->excess_rc) > 0)) {
+                if ((atomic_sub_return(1, &rdma->excess_rc) >= 0)) {
+                        /* Got one ! */
+                        kfree(req->rc);
+                        req->rc = NULL;
+                        goto dont_need_post_recv;
+                } else {
+                        /* We raced and lost. */
+                        atomic_inc(&rdma->excess_rc);
+                }
+        }
+
         /* Allocate an fcall for the reply */
         rpl_context = kmalloc(sizeof *rpl_context, GFP_NOFS);
         if (!rpl_context) {
                 err = -ENOMEM;
-                goto err_close;
-        }
-
-        /*
-         * If the request has a buffer, steal it, otherwise
-         * allocate a new one.  Typically, requests should already
-         * have receive buffers allocated and just swap them around
-         */
-        if (!req->rc) {
-                req->rc = kmalloc(sizeof(struct p9_fcall)+client->msize,
-                                  GFP_NOFS);
-                if (req->rc) {
-                        req->rc->sdata = (char *) req->rc +
-                                                sizeof(struct p9_fcall);
-                        req->rc->capacity = client->msize;
-                }
+                goto recv_error;
         }
         rpl_context->rc = req->rc;
-        if (!rpl_context->rc) {
-                err = -ENOMEM;
-                goto err_free2;
-        }
 
         /*
          * Post a receive buffer for this request. We need to ensure
@@ -455,29 +464,35 @@ static int rdma_request(struct p9_client *client, struct p9_req_t *req)
          * outstanding request, so we must keep a count to avoid
          * overflowing the RQ.
          */
-        if (atomic_inc_return(&rdma->rq_count) <= rdma->rq_depth) {
-                err = post_recv(client, rpl_context);
-                if (err)
-                        goto err_free1;
-        } else
-                atomic_dec(&rdma->rq_count);
+        if (down_interruptible(&rdma->rq_sem)) {
+                err = -EINTR;
+                goto recv_error;
+        }
 
+        err = post_recv(client, rpl_context);
+        if (err) {
+                p9_debug(P9_DEBUG_FCALL, "POST RECV failed\n");
+                goto recv_error;
+        }
         /* remove posted receive buffer from request structure */
         req->rc = NULL;
 
+dont_need_post_recv:
         /* Post the request */
         c = kmalloc(sizeof *c, GFP_NOFS);
         if (!c) {
                 err = -ENOMEM;
-                goto err_free1;
+                goto send_error;
         }
         c->req = req;
 
         c->busa = ib_dma_map_single(rdma->cm_id->device,
                                     c->req->tc->sdata, c->req->tc->size,
                                     DMA_TO_DEVICE);
-        if (ib_dma_mapping_error(rdma->cm_id->device, c->busa))
-                goto error;
+        if (ib_dma_mapping_error(rdma->cm_id->device, c->busa)) {
+                err = -EIO;
+                goto send_error;
+        }
 
         sge.addr = c->busa;
         sge.length = c->req->tc->size;
@@ -491,22 +506,32 @@ static int rdma_request(struct p9_client *client, struct p9_req_t *req)
         wr.sg_list = &sge;
         wr.num_sge = 1;
 
-        if (down_interruptible(&rdma->sq_sem))
-                goto error;
+        if (down_interruptible(&rdma->sq_sem)) {
+                err = -EINTR;
+                goto send_error;
+        }
 
-        return ib_post_send(rdma->qp, &wr, &bad_wr);
+        err = ib_post_send(rdma->qp, &wr, &bad_wr);
+        if (err)
+                goto send_error;
 
- error:
+        /* Success */
+        return 0;
+
+ /* Handle errors that happened during or while preparing the send: */
+ send_error:
         kfree(c);
-        kfree(rpl_context->rc);
-        kfree(rpl_context);
-        p9_debug(P9_DEBUG_ERROR, "EIO\n");
-        return -EIO;
- err_free1:
-        kfree(rpl_context->rc);
- err_free2:
+        p9_debug(P9_DEBUG_ERROR, "Error %d in rdma_request()\n", err);
+
+        /* Ach.
+         *  We did recv_post(), but not send. We have one recv_post in excess.
+         */
+        atomic_inc(&rdma->excess_rc);
+        return err;
+
+ /* Handle errors that happened during or while preparing post_recv(): */
+ recv_error:
         kfree(rpl_context);
- err_close:
         spin_lock_irqsave(&rdma->req_lock, flags);
         if (rdma->state < P9_RDMA_CLOSING) {
                 rdma->state = P9_RDMA_CLOSING;
@@ -551,7 +576,8 @@ static struct p9_trans_rdma *alloc_rdma(struct p9_rdma_opts *opts)
         spin_lock_init(&rdma->req_lock);
         init_completion(&rdma->cm_done);
         sema_init(&rdma->sq_sem, rdma->sq_depth);
-        atomic_set(&rdma->rq_count, 0);
+        sema_init(&rdma->rq_sem, rdma->rq_depth);
+        atomic_set(&rdma->excess_rc, 0);
 
         return rdma;
 }
@@ -562,6 +588,17 @@ static int rdma_cancel(struct p9_client *client, struct p9_req_t *req)
         return 1;
 }
 
+/* A request has been fully flushed without a reply.
+ * That means we have posted one buffer in excess.
+ */
+static int rdma_cancelled(struct p9_client *client, struct p9_req_t *req)
+{
+        struct p9_trans_rdma *rdma = client->trans;
+
+        atomic_inc(&rdma->excess_rc);
+        return 0;
+}
+
 /**
  * trans_create_rdma - Transport method for creating atransport instance
  * @client: client instance
diff --git a/net/Kconfig b/net/Kconfig
index 2ddc9046868e..37702491abe9 100644
--- a/net/Kconfig
+++ b/net/Kconfig
@@ -5,6 +5,7 @@
 menuconfig NET
         bool "Networking support"
         select NLATTR
+        select GENERIC_NET_UTILS
         ---help---
           Unless you really know what you are doing, you should say Y here.
           The reason is that some programs need kernel networking support even
@@ -218,6 +219,7 @@ source "net/batman-adv/Kconfig"
 source "net/openvswitch/Kconfig"
 source "net/vmw_vsock/Kconfig"
 source "net/netlink/Kconfig"
+source "net/mpls/Kconfig"
 
 config RPS
         boolean
@@ -242,6 +244,10 @@ config NETPRIO_CGROUP
           Cgroup subsystem for use in assigning processes to network priorities on
           a per-interface basis
 
+config NET_LL_RX_POLL
+        boolean
+        default y
+
 config BQL
         boolean
         depends on SYSFS
@@ -259,6 +265,18 @@ config BPF_JIT
           packet sniffing (libpcap/tcpdump). Note : Admin should enable
           this feature changing /proc/sys/net/core/bpf_jit_enable
 
+config NET_FLOW_LIMIT
+        boolean
+        depends on RPS
+        default y
+        ---help---
+          The network stack has to drop packets when a receive processing CPU's
+          backlog reaches netdev_max_backlog. If a few out of many active flows
+          generate the vast majority of load, drop their traffic earlier to
+          maintain capacity for the other flows. This feature provides servers
+          with many clients some protection against DoS by a single (spoofed)
+          flow that greatly exceeds average workload.
+
 menu "Network testing"
 
 config NET_PKTGEN
diff --git a/net/Makefile b/net/Makefile
index 091e7b04f301..9492e8cb64e9 100644
--- a/net/Makefile
+++ b/net/Makefile
@@ -70,3 +70,4 @@ obj-$(CONFIG_BATMAN_ADV)	+= batman-adv/
 obj-$(CONFIG_NFC)               += nfc/
 obj-$(CONFIG_OPENVSWITCH)       += openvswitch/
 obj-$(CONFIG_VSOCKETS)  += vmw_vsock/
+obj-$(CONFIG_NET_MPLS_GSO)      += mpls/
diff --git a/net/appletalk/aarp.c b/net/appletalk/aarp.c
index 173a2e82f486..690356fa52b9 100644
--- a/net/appletalk/aarp.c
+++ b/net/appletalk/aarp.c
@@ -332,7 +332,7 @@ static void aarp_expire_timeout(unsigned long unused)
 static int aarp_device_event(struct notifier_block *this, unsigned long event,
                              void *ptr)
 {
-        struct net_device *dev = ptr;
+        struct net_device *dev = netdev_notifier_info_to_dev(ptr);
         int ct;
 
         if (!net_eq(dev_net(dev), &init_net))
diff --git a/net/appletalk/ddp.c b/net/appletalk/ddp.c
index ef12839a7cfe..7fee50d637f9 100644
--- a/net/appletalk/ddp.c
+++ b/net/appletalk/ddp.c
@@ -644,7 +644,7 @@ static inline void atalk_dev_down(struct net_device *dev)
 static int ddp_device_event(struct notifier_block *this, unsigned long event,
                             void *ptr)
 {
-        struct net_device *dev = ptr;
+        struct net_device *dev = netdev_notifier_info_to_dev(ptr);
 
         if (!net_eq(dev_net(dev), &init_net))
                 return NOTIFY_DONE;
diff --git a/net/atm/clip.c b/net/atm/clip.c
index 8ae3a7879335..8215f7cb170b 100644
--- a/net/atm/clip.c
+++ b/net/atm/clip.c
@@ -539,9 +539,9 @@ static int clip_create(int number)
 }
 
 static int clip_device_event(struct notifier_block *this, unsigned long event,
-                             void *arg)
+                             void *ptr)
 {
-        struct net_device *dev = arg;
+        struct net_device *dev = netdev_notifier_info_to_dev(ptr);
 
         if (!net_eq(dev_net(dev), &init_net))
                 return NOTIFY_DONE;
@@ -575,6 +575,7 @@ static int clip_inet_event(struct notifier_block *this, unsigned long event,
                            void *ifa)
 {
         struct in_device *in_dev;
+        struct netdev_notifier_info info;
 
         in_dev = ((struct in_ifaddr *)ifa)->ifa_dev;
         /*
@@ -583,7 +584,8 @@ static int clip_inet_event(struct notifier_block *this, unsigned long event,
          */
         if (event != NETDEV_UP)
                 return NOTIFY_DONE;
-        return clip_device_event(this, NETDEV_CHANGE, in_dev->dev);
+        netdev_notifier_info_init(&info, in_dev->dev);
+        return clip_device_event(this, NETDEV_CHANGE, &info);
 }
 
 static struct notifier_block clip_dev_notifier = {
diff --git a/net/atm/mpc.c b/net/atm/mpc.c
index d4cc1be5c364..3af12755cd04 100644
--- a/net/atm/mpc.c
+++ b/net/atm/mpc.c
@@ -998,14 +998,12 @@ int msg_to_mpoad(struct k_message *mesg, struct mpoa_client *mpc)
 }
 
 static int mpoa_event_listener(struct notifier_block *mpoa_notifier,
-                               unsigned long event, void *dev_ptr)
+                               unsigned long event, void *ptr)
 {
-        struct net_device *dev;
+        struct net_device *dev = netdev_notifier_info_to_dev(ptr);
         struct mpoa_client *mpc;
         struct lec_priv *priv;
 
-        dev = dev_ptr;
-
         if (!net_eq(dev_net(dev), &init_net))
                 return NOTIFY_DONE;
 
diff --git a/net/ax25/af_ax25.c b/net/ax25/af_ax25.c
index e277e38f736b..4b4d2b779ec1 100644
--- a/net/ax25/af_ax25.c
+++ b/net/ax25/af_ax25.c
@@ -111,9 +111,9 @@ again:
  *      Handle device status changes.
  */
 static int ax25_device_event(struct notifier_block *this, unsigned long event,
-        void *ptr)
+                             void *ptr)
 {
-        struct net_device *dev = (struct net_device *)ptr;
+        struct net_device *dev = netdev_notifier_info_to_dev(ptr);
 
         if (!net_eq(dev_net(dev), &init_net))
                 return NOTIFY_DONE;
@@ -1974,7 +1974,7 @@ static struct packet_type ax25_packet_type __read_mostly = {
 };
 
 static struct notifier_block ax25_dev_notifier = {
-        .notifier_call =ax25_device_event,
+        .notifier_call = ax25_device_event,
 };
 
 static int __init ax25_init(void)
diff --git a/net/ax25/sysctl_net_ax25.c b/net/ax25/sysctl_net_ax25.c
index d5744b752511..919a5ce47515 100644
--- a/net/ax25/sysctl_net_ax25.c
+++ b/net/ax25/sysctl_net_ax25.c
@@ -29,7 +29,7 @@ static int min_proto[1],		max_proto[] = { AX25_PROTO_MAX };
 static int min_ds_timeout[1],           max_ds_timeout[] = {65535000};
 #endif
 
-static const ctl_table ax25_param_table[] = {
+static const struct ctl_table ax25_param_table[] = {
         {
                 .procname       = "ip_default_mode",
                 .maxlen         = sizeof(int),
diff --git a/net/batman-adv/Makefile b/net/batman-adv/Makefile
index acbac2a9c62f..489bb36f1b94 100644
--- a/net/batman-adv/Makefile
+++ b/net/batman-adv/Makefile
@@ -32,7 +32,6 @@ batman-adv-y += icmp_socket.o
 batman-adv-y += main.o
 batman-adv-$(CONFIG_BATMAN_ADV_NC) += network-coding.o
 batman-adv-y += originator.o
-batman-adv-y += ring_buffer.o
 batman-adv-y += routing.o
 batman-adv-y += send.o
 batman-adv-y += soft-interface.o
diff --git a/net/batman-adv/bat_iv_ogm.c b/net/batman-adv/bat_iv_ogm.c
index f680ee101878..62da5278014a 100644
--- a/net/batman-adv/bat_iv_ogm.c
+++ b/net/batman-adv/bat_iv_ogm.c
@@ -19,7 +19,6 @@
 
 #include "main.h"
 #include "translation-table.h"
-#include "ring_buffer.h"
 #include "originator.h"
 #include "routing.h"
 #include "gateway_common.h"
@@ -30,6 +29,49 @@
 #include "network-coding.h"
 
 /**
+ * batadv_ring_buffer_set - update the ring buffer with the given value
+ * @lq_recv: pointer to the ring buffer
+ * @lq_index: index to store the value at
+ * @value: value to store in the ring buffer
+ */
+static void batadv_ring_buffer_set(uint8_t lq_recv[], uint8_t *lq_index,
+                                   uint8_t value)
+{
+        lq_recv[*lq_index] = value;
+        *lq_index = (*lq_index + 1) % BATADV_TQ_GLOBAL_WINDOW_SIZE;
+}
+
+/**
+ * batadv_ring_buffer_set - compute the average of all non-zero values stored
+ * in the given ring buffer
+ * @lq_recv: pointer to the ring buffer
+ *
+ * Returns computed average value.
+ */
+static uint8_t batadv_ring_buffer_avg(const uint8_t lq_recv[])
+{
+        const uint8_t *ptr;
+        uint16_t count = 0, i = 0, sum = 0;
+
+        ptr = lq_recv;
+
+        while (i < BATADV_TQ_GLOBAL_WINDOW_SIZE) {
+                if (*ptr != 0) {
+                        count++;
+                        sum += *ptr;
+                }
+
+                i++;
+                ptr++;
+        }
+
+        if (count == 0)
+                return 0;
+
+        return (uint8_t)(sum / count);
+}
+
+/*
  * batadv_dup_status - duplicate status
  * @BATADV_NO_DUP: the packet is a duplicate
  * @BATADV_ORIG_DUP: OGM is a duplicate in the originator (but not for the
@@ -48,12 +90,11 @@ static struct batadv_neigh_node *
 batadv_iv_ogm_neigh_new(struct batadv_hard_iface *hard_iface,
                         const uint8_t *neigh_addr,
                         struct batadv_orig_node *orig_node,
-                        struct batadv_orig_node *orig_neigh, __be32 seqno)
+                        struct batadv_orig_node *orig_neigh)
 {
         struct batadv_neigh_node *neigh_node;
 
-        neigh_node = batadv_neigh_node_new(hard_iface, neigh_addr,
-                                           ntohl(seqno));
+        neigh_node = batadv_neigh_node_new(hard_iface, neigh_addr);
         if (!neigh_node)
                 goto out;
 
@@ -428,18 +469,16 @@ static void batadv_iv_ogm_aggregate_new(const unsigned char *packet_buff,
         else
                 skb_size = packet_len;
 
-        skb_size += ETH_HLEN + NET_IP_ALIGN;
+        skb_size += ETH_HLEN;
 
-        forw_packet_aggr->skb = dev_alloc_skb(skb_size);
+        forw_packet_aggr->skb = netdev_alloc_skb_ip_align(NULL, skb_size);
         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, ETH_HLEN + NET_IP_ALIGN);
-
-        INIT_HLIST_NODE(&forw_packet_aggr->list);
+        skb_reserve(forw_packet_aggr->skb, ETH_HLEN);
 
         skb_buff = skb_put(forw_packet_aggr->skb, packet_len);
         forw_packet_aggr->packet_len = packet_len;
@@ -605,6 +644,41 @@ static void batadv_iv_ogm_forward(struct batadv_orig_node *orig_node,
                                 if_incoming, 0, batadv_iv_ogm_fwd_send_time());
 }
 
+/**
+ * batadv_iv_ogm_slide_own_bcast_window - bitshift own OGM broadcast windows for
+ * the given interface
+ * @hard_iface: the interface for which the windows have to be shifted
+ */
+static void
+batadv_iv_ogm_slide_own_bcast_window(struct batadv_hard_iface *hard_iface)
+{
+        struct batadv_priv *bat_priv = netdev_priv(hard_iface->soft_iface);
+        struct batadv_hashtable *hash = bat_priv->orig_hash;
+        struct hlist_head *head;
+        struct batadv_orig_node *orig_node;
+        unsigned long *word;
+        uint32_t i;
+        size_t word_index;
+        uint8_t *w;
+
+        for (i = 0; i < hash->size; i++) {
+                head = &hash->table[i];
+
+                rcu_read_lock();
+                hlist_for_each_entry_rcu(orig_node, head, hash_entry) {
+                        spin_lock_bh(&orig_node->ogm_cnt_lock);
+                        word_index = hard_iface->if_num * BATADV_NUM_WORDS;
+                        word = &(orig_node->bcast_own[word_index]);
+
+                        batadv_bit_get_packet(bat_priv, word, 1, 0);
+                        w = &orig_node->bcast_own_sum[hard_iface->if_num];
+                        *w = bitmap_weight(word, BATADV_TQ_LOCAL_WINDOW_SIZE);
+                        spin_unlock_bh(&orig_node->ogm_cnt_lock);
+                }
+                rcu_read_unlock();
+        }
+}
+
 static void batadv_iv_ogm_schedule(struct batadv_hard_iface *hard_iface)
 {
         struct batadv_priv *bat_priv = netdev_priv(hard_iface->soft_iface);
@@ -649,7 +723,7 @@ static void batadv_iv_ogm_schedule(struct batadv_hard_iface *hard_iface)
                 batadv_ogm_packet->gw_flags = BATADV_NO_FLAGS;
         }
 
-        batadv_slide_own_bcast_window(hard_iface);
+        batadv_iv_ogm_slide_own_bcast_window(hard_iface);
         batadv_iv_ogm_queue_add(bat_priv, hard_iface->bat_iv.ogm_buff,
                                 hard_iface->bat_iv.ogm_buff_len, hard_iface, 1,
                                 batadv_iv_ogm_emit_send_time(bat_priv));
@@ -685,7 +759,7 @@ batadv_iv_ogm_orig_update(struct batadv_priv *bat_priv,
                 if (batadv_compare_eth(neigh_addr, ethhdr->h_source) &&
                     tmp_neigh_node->if_incoming == if_incoming &&
                     atomic_inc_not_zero(&tmp_neigh_node->refcount)) {
-                        if (neigh_node)
+                        if (WARN(neigh_node, "too many matching neigh_nodes"))
                                 batadv_neigh_node_free_ref(neigh_node);
                         neigh_node = tmp_neigh_node;
                         continue;
@@ -711,8 +785,7 @@ batadv_iv_ogm_orig_update(struct batadv_priv *bat_priv,
 
                 neigh_node = batadv_iv_ogm_neigh_new(if_incoming,
                                                      ethhdr->h_source,
-                                                     orig_node, orig_tmp,
-                                                     batadv_ogm_packet->seqno);
+                                                     orig_node, orig_tmp);
 
                 batadv_orig_node_free_ref(orig_tmp);
                 if (!neigh_node)
@@ -844,8 +917,7 @@ static int batadv_iv_ogm_calc_tq(struct batadv_orig_node *orig_node,
                 neigh_node = batadv_iv_ogm_neigh_new(if_incoming,
                                                      orig_neigh_node->orig,
                                                      orig_neigh_node,
-                                                     orig_neigh_node,
-                                                     batadv_ogm_packet->seqno);
+                                                     orig_neigh_node);
 
         if (!neigh_node)
                 goto out;
@@ -1013,7 +1085,7 @@ static void batadv_iv_ogm_process(const struct ethhdr *ethhdr,
         struct batadv_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_bidirect;
+        int is_bidirect;
         bool is_single_hop_neigh = false;
         bool is_from_best_next_hop = false;
         int sameseq, similar_ttl;
@@ -1077,19 +1149,9 @@ static void batadv_iv_ogm_process(const struct ethhdr *ethhdr,
                 if (batadv_compare_eth(batadv_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 (batadv_ogm_packet->header.version != BATADV_COMPAT_VERSION) {
-                batadv_dbg(BATADV_DBG_BATMAN, bat_priv,
-                           "Drop packet: incompatible batman version (%i)\n",
-                           batadv_ogm_packet->header.version);
-                return;
-        }
-
         if (is_my_addr) {
                 batadv_dbg(BATADV_DBG_BATMAN, bat_priv,
                            "Drop packet: received my own broadcast (sender: %pM)\n",
@@ -1097,13 +1159,6 @@ static void batadv_iv_ogm_process(const struct ethhdr *ethhdr,
                 return;
         }
 
-        if (is_broadcast) {
-                batadv_dbg(BATADV_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;
@@ -1312,7 +1367,7 @@ static int batadv_iv_ogm_receive(struct sk_buff *skb,
                            skb->len + ETH_HLEN);
 
         packet_len = skb_headlen(skb);
-        ethhdr = (struct ethhdr *)skb_mac_header(skb);
+        ethhdr = eth_hdr(skb);
         packet_buff = skb->data;
         batadv_ogm_packet = (struct batadv_ogm_packet *)packet_buff;
 
diff --git a/net/batman-adv/bridge_loop_avoidance.c b/net/batman-adv/bridge_loop_avoidance.c
index de27b3175cfd..e14531f1ce1c 100644
--- a/net/batman-adv/bridge_loop_avoidance.c
+++ b/net/batman-adv/bridge_loop_avoidance.c
@@ -180,7 +180,7 @@ static struct batadv_bla_claim
  */
 static struct batadv_bla_backbone_gw *
 batadv_backbone_hash_find(struct batadv_priv *bat_priv,
-                          uint8_t *addr, short vid)
+                          uint8_t *addr, unsigned short vid)
 {
         struct batadv_hashtable *hash = bat_priv->bla.backbone_hash;
         struct hlist_head *head;
@@ -257,7 +257,7 @@ batadv_bla_del_backbone_claims(struct batadv_bla_backbone_gw *backbone_gw)
  * @claimtype: the type of the claim (CLAIM, UNCLAIM, ANNOUNCE, ...)
  */
 static void batadv_bla_send_claim(struct batadv_priv *bat_priv, uint8_t *mac,
-                                  short vid, int claimtype)
+                                  unsigned short vid, int claimtype)
 {
         struct sk_buff *skb;
         struct ethhdr *ethhdr;
@@ -307,7 +307,8 @@ static void batadv_bla_send_claim(struct batadv_priv *bat_priv, uint8_t *mac,
                  */
                 memcpy(ethhdr->h_source, mac, ETH_ALEN);
                 batadv_dbg(BATADV_DBG_BLA, bat_priv,
-                           "bla_send_claim(): CLAIM %pM on vid %d\n", mac, vid);
+                           "bla_send_claim(): CLAIM %pM on vid %d\n", mac,
+                           BATADV_PRINT_VID(vid));
                 break;
         case BATADV_CLAIM_TYPE_UNCLAIM:
                 /* unclaim frame
@@ -316,7 +317,7 @@ static void batadv_bla_send_claim(struct batadv_priv *bat_priv, uint8_t *mac,
                 memcpy(hw_src, mac, ETH_ALEN);
                 batadv_dbg(BATADV_DBG_BLA, bat_priv,
                            "bla_send_claim(): UNCLAIM %pM on vid %d\n", mac,
-                           vid);
+                           BATADV_PRINT_VID(vid));
                 break;
         case BATADV_CLAIM_TYPE_ANNOUNCE:
                 /* announcement frame
@@ -325,7 +326,7 @@ static void batadv_bla_send_claim(struct batadv_priv *bat_priv, uint8_t *mac,
                 memcpy(hw_src, mac, ETH_ALEN);
                 batadv_dbg(BATADV_DBG_BLA, bat_priv,
                            "bla_send_claim(): ANNOUNCE of %pM on vid %d\n",
-                           ethhdr->h_source, vid);
+                           ethhdr->h_source, BATADV_PRINT_VID(vid));
                 break;
         case BATADV_CLAIM_TYPE_REQUEST:
                 /* request frame
@@ -335,13 +336,15 @@ static void batadv_bla_send_claim(struct batadv_priv *bat_priv, uint8_t *mac,
                 memcpy(hw_src, mac, ETH_ALEN);
                 memcpy(ethhdr->h_dest, mac, ETH_ALEN);
                 batadv_dbg(BATADV_DBG_BLA, bat_priv,
-                           "bla_send_claim(): REQUEST of %pM to %pMon vid %d\n",
-                           ethhdr->h_source, ethhdr->h_dest, vid);
+                           "bla_send_claim(): REQUEST of %pM to %pM on vid %d\n",
+                           ethhdr->h_source, ethhdr->h_dest,
+                           BATADV_PRINT_VID(vid));
                 break;
         }
 
-        if (vid != -1)
-                skb = vlan_insert_tag(skb, htons(ETH_P_8021Q), vid);
+        if (vid & BATADV_VLAN_HAS_TAG)
+                skb = vlan_insert_tag(skb, htons(ETH_P_8021Q),
+                                      vid & VLAN_VID_MASK);
 
         skb_reset_mac_header(skb);
         skb->protocol = eth_type_trans(skb, soft_iface);
@@ -367,7 +370,7 @@ out:
  */
 static struct batadv_bla_backbone_gw *
 batadv_bla_get_backbone_gw(struct batadv_priv *bat_priv, uint8_t *orig,
-                           short vid, bool own_backbone)
+                           unsigned short vid, bool own_backbone)
 {
         struct batadv_bla_backbone_gw *entry;
         struct batadv_orig_node *orig_node;
@@ -380,7 +383,7 @@ batadv_bla_get_backbone_gw(struct batadv_priv *bat_priv, uint8_t *orig,
 
         batadv_dbg(BATADV_DBG_BLA, bat_priv,
                    "bla_get_backbone_gw(): not found (%pM, %d), creating new entry\n",
-                   orig, vid);
+                   orig, BATADV_PRINT_VID(vid));
 
         entry = kzalloc(sizeof(*entry), GFP_ATOMIC);
         if (!entry)
@@ -434,7 +437,7 @@ batadv_bla_get_backbone_gw(struct batadv_priv *bat_priv, uint8_t *orig,
 static void
 batadv_bla_update_own_backbone_gw(struct batadv_priv *bat_priv,
                                   struct batadv_hard_iface *primary_if,
-                                  short vid)
+                                  unsigned short vid)
 {
         struct batadv_bla_backbone_gw *backbone_gw;
 
@@ -456,7 +459,7 @@ batadv_bla_update_own_backbone_gw(struct batadv_priv *bat_priv,
  */
 static void batadv_bla_answer_request(struct batadv_priv *bat_priv,
                                       struct batadv_hard_iface *primary_if,
-                                      short vid)
+                                      unsigned short vid)
 {
         struct hlist_head *head;
         struct batadv_hashtable *hash;
@@ -547,7 +550,7 @@ static void batadv_bla_send_announce(struct batadv_priv *bat_priv,
  * @backbone_gw: the backbone gateway which claims it
  */
 static void batadv_bla_add_claim(struct batadv_priv *bat_priv,
-                                 const uint8_t *mac, const short vid,
+                                 const uint8_t *mac, const unsigned short vid,
                                  struct batadv_bla_backbone_gw *backbone_gw)
 {
         struct batadv_bla_claim *claim;
@@ -572,7 +575,7 @@ static void batadv_bla_add_claim(struct batadv_priv *bat_priv,
                 atomic_set(&claim->refcount, 2);
                 batadv_dbg(BATADV_DBG_BLA, bat_priv,
                            "bla_add_claim(): adding new entry %pM, vid %d to hash ...\n",
-                           mac, vid);
+                           mac, BATADV_PRINT_VID(vid));
                 hash_added = batadv_hash_add(bat_priv->bla.claim_hash,
                                              batadv_compare_claim,
                                              batadv_choose_claim, claim,
@@ -591,7 +594,7 @@ static void batadv_bla_add_claim(struct batadv_priv *bat_priv,
 
                 batadv_dbg(BATADV_DBG_BLA, bat_priv,
                            "bla_add_claim(): changing ownership for %pM, vid %d\n",
-                           mac, vid);
+                           mac, BATADV_PRINT_VID(vid));
 
                 claim->backbone_gw->crc ^= crc16(0, claim->addr, ETH_ALEN);
                 batadv_backbone_gw_free_ref(claim->backbone_gw);
@@ -611,7 +614,7 @@ claim_free_ref:
  * given mac address and vid.
  */
 static void batadv_bla_del_claim(struct batadv_priv *bat_priv,
-                                 const uint8_t *mac, const short vid)
+                                 const uint8_t *mac, const unsigned short vid)
 {
         struct batadv_bla_claim search_claim, *claim;
 
@@ -622,7 +625,7 @@ static void batadv_bla_del_claim(struct batadv_priv *bat_priv,
                 return;
 
         batadv_dbg(BATADV_DBG_BLA, bat_priv, "bla_del_claim(): %pM, vid %d\n",
-                   mac, vid);
+                   mac, BATADV_PRINT_VID(vid));
 
         batadv_hash_remove(bat_priv->bla.claim_hash, batadv_compare_claim,
                            batadv_choose_claim, claim);
@@ -637,7 +640,7 @@ static void batadv_bla_del_claim(struct batadv_priv *bat_priv,
 /* check for ANNOUNCE frame, return 1 if handled */
 static int batadv_handle_announce(struct batadv_priv *bat_priv,
                                   uint8_t *an_addr, uint8_t *backbone_addr,
-                                  short vid)
+                                  unsigned short vid)
 {
         struct batadv_bla_backbone_gw *backbone_gw;
         uint16_t crc;
@@ -658,12 +661,13 @@ static int batadv_handle_announce(struct batadv_priv *bat_priv,
 
         batadv_dbg(BATADV_DBG_BLA, bat_priv,
                    "handle_announce(): ANNOUNCE vid %d (sent by %pM)... CRC = %#.4x\n",
-                   vid, backbone_gw->orig, crc);
+                   BATADV_PRINT_VID(vid), backbone_gw->orig, crc);
 
         if (backbone_gw->crc != crc) {
                 batadv_dbg(BATADV_DBG_BLA, backbone_gw->bat_priv,
                            "handle_announce(): CRC FAILED for %pM/%d (my = %#.4x, sent = %#.4x)\n",
-                           backbone_gw->orig, backbone_gw->vid,
+                           backbone_gw->orig,
+                           BATADV_PRINT_VID(backbone_gw->vid),
                            backbone_gw->crc, crc);
 
                 batadv_bla_send_request(backbone_gw);
@@ -685,7 +689,7 @@ static int batadv_handle_announce(struct batadv_priv *bat_priv,
 static int batadv_handle_request(struct batadv_priv *bat_priv,
                                  struct batadv_hard_iface *primary_if,
                                  uint8_t *backbone_addr,
-                                 struct ethhdr *ethhdr, short vid)
+                                 struct ethhdr *ethhdr, unsigned short vid)
 {
         /* check for REQUEST frame */
         if (!batadv_compare_eth(backbone_addr, ethhdr->h_dest))
@@ -699,7 +703,7 @@ static int batadv_handle_request(struct batadv_priv *bat_priv,
 
         batadv_dbg(BATADV_DBG_BLA, bat_priv,
                    "handle_request(): REQUEST vid %d (sent by %pM)...\n",
-                   vid, ethhdr->h_source);
+                   BATADV_PRINT_VID(vid), ethhdr->h_source);
 
         batadv_bla_answer_request(bat_priv, primary_if, vid);
         return 1;
@@ -709,7 +713,7 @@ static int batadv_handle_request(struct batadv_priv *bat_priv,
 static int batadv_handle_unclaim(struct batadv_priv *bat_priv,
                                  struct batadv_hard_iface *primary_if,
                                  uint8_t *backbone_addr,
-                                 uint8_t *claim_addr, short vid)
+                                 uint8_t *claim_addr, unsigned short vid)
 {
         struct batadv_bla_backbone_gw *backbone_gw;
 
@@ -727,7 +731,7 @@ static int batadv_handle_unclaim(struct batadv_priv *bat_priv,
         /* this must be an UNCLAIM frame */
         batadv_dbg(BATADV_DBG_BLA, bat_priv,
                    "handle_unclaim(): UNCLAIM %pM on vid %d (sent by %pM)...\n",
-                   claim_addr, vid, backbone_gw->orig);
+                   claim_addr, BATADV_PRINT_VID(vid), backbone_gw->orig);
 
         batadv_bla_del_claim(bat_priv, claim_addr, vid);
         batadv_backbone_gw_free_ref(backbone_gw);
@@ -738,7 +742,7 @@ static int batadv_handle_unclaim(struct batadv_priv *bat_priv,
 static int batadv_handle_claim(struct batadv_priv *bat_priv,
                                struct batadv_hard_iface *primary_if,
                                uint8_t *backbone_addr, uint8_t *claim_addr,
-                               short vid)
+                               unsigned short vid)
 {
         struct batadv_bla_backbone_gw *backbone_gw;
 
@@ -861,14 +865,15 @@ static int batadv_bla_process_claim(struct batadv_priv *bat_priv,
         struct batadv_bla_claim_dst *bla_dst;
         uint16_t proto;
         int headlen;
-        short vid = -1;
+        unsigned short vid = BATADV_NO_FLAGS;
         int ret;
 
-        ethhdr = (struct ethhdr *)skb_mac_header(skb);
+        ethhdr = eth_hdr(skb);
 
         if (ntohs(ethhdr->h_proto) == ETH_P_8021Q) {
                 vhdr = (struct vlan_ethhdr *)ethhdr;
                 vid = ntohs(vhdr->h_vlan_TCI) & VLAN_VID_MASK;
+                vid |= BATADV_VLAN_HAS_TAG;
                 proto = ntohs(vhdr->h_vlan_encapsulated_proto);
                 headlen = sizeof(*vhdr);
         } else {
@@ -885,7 +890,7 @@ static int batadv_bla_process_claim(struct batadv_priv *bat_priv,
                 return 0;
 
         /* pskb_may_pull() may have modified the pointers, get ethhdr again */
-        ethhdr = (struct ethhdr *)skb_mac_header(skb);
+        ethhdr = eth_hdr(skb);
         arphdr = (struct arphdr *)((uint8_t *)ethhdr + headlen);
 
         /* Check whether the ARP frame carries a valid
@@ -910,7 +915,8 @@ static int batadv_bla_process_claim(struct batadv_priv *bat_priv,
         if (ret == 1)
                 batadv_dbg(BATADV_DBG_BLA, bat_priv,
                            "bla_process_claim(): received a claim frame from another group. From: %pM on vid %d ...(hw_src %pM, hw_dst %pM)\n",
-                           ethhdr->h_source, vid, hw_src, hw_dst);
+                           ethhdr->h_source, BATADV_PRINT_VID(vid), hw_src,
+                           hw_dst);
 
         if (ret < 2)
                 return ret;
@@ -945,7 +951,7 @@ static int batadv_bla_process_claim(struct batadv_priv *bat_priv,
 
         batadv_dbg(BATADV_DBG_BLA, bat_priv,
                    "bla_process_claim(): ERROR - this looks like a claim frame, but is useless. eth src %pM on vid %d ...(hw_src %pM, hw_dst %pM)\n",
-                   ethhdr->h_source, vid, hw_src, hw_dst);
+                   ethhdr->h_source, BATADV_PRINT_VID(vid), hw_src, hw_dst);
         return 1;
 }
 
@@ -1362,7 +1368,7 @@ int batadv_bla_is_backbone_gw(struct sk_buff *skb,
         struct ethhdr *ethhdr;
         struct vlan_ethhdr *vhdr;
         struct batadv_bla_backbone_gw *backbone_gw;
-        short vid = -1;
+        unsigned short vid = BATADV_NO_FLAGS;
 
         if (!atomic_read(&orig_node->bat_priv->bridge_loop_avoidance))
                 return 0;
@@ -1379,6 +1385,7 @@ int batadv_bla_is_backbone_gw(struct sk_buff *skb,
 
                 vhdr = (struct vlan_ethhdr *)(skb->data + hdr_size);
                 vid = ntohs(vhdr->h_vlan_TCI) & VLAN_VID_MASK;
+                vid |= BATADV_VLAN_HAS_TAG;
         }
 
         /* see if this originator is a backbone gw for this VLAN */
@@ -1428,15 +1435,15 @@ void batadv_bla_free(struct batadv_priv *bat_priv)
  * returns 1, otherwise it returns 0 and the caller shall further
  * process the skb.
  */
-int batadv_bla_rx(struct batadv_priv *bat_priv, struct sk_buff *skb, short vid,
-                  bool is_bcast)
+int batadv_bla_rx(struct batadv_priv *bat_priv, struct sk_buff *skb,
+                  unsigned short vid, bool is_bcast)
 {
         struct ethhdr *ethhdr;
         struct batadv_bla_claim search_claim, *claim = NULL;
         struct batadv_hard_iface *primary_if;
         int ret;
 
-        ethhdr = (struct ethhdr *)skb_mac_header(skb);
+        ethhdr = eth_hdr(skb);
 
         primary_if = batadv_primary_if_get_selected(bat_priv);
         if (!primary_if)
@@ -1523,7 +1530,8 @@ out:
  * returns 1, otherwise it returns 0 and the caller shall further
  * process the skb.
  */
-int batadv_bla_tx(struct batadv_priv *bat_priv, struct sk_buff *skb, short vid)
+int batadv_bla_tx(struct batadv_priv *bat_priv, struct sk_buff *skb,
+                  unsigned short vid)
 {
         struct ethhdr *ethhdr;
         struct batadv_bla_claim search_claim, *claim = NULL;
@@ -1543,7 +1551,7 @@ int batadv_bla_tx(struct batadv_priv *bat_priv, struct sk_buff *skb, short vid)
         if (batadv_bla_process_claim(bat_priv, primary_if, skb))
                 goto handled;
 
-        ethhdr = (struct ethhdr *)skb_mac_header(skb);
+        ethhdr = eth_hdr(skb);
 
         if (unlikely(atomic_read(&bat_priv->bla.num_requests)))
                 /* don't allow broadcasts while requests are in flight */
@@ -1627,8 +1635,8 @@ int batadv_bla_claim_table_seq_print_text(struct seq_file *seq, void *offset)
                 hlist_for_each_entry_rcu(claim, head, hash_entry) {
                         is_own = batadv_compare_eth(claim->backbone_gw->orig,
                                                     primary_addr);
-                        seq_printf(seq, " * %pM on % 5d by %pM [%c] (%#.4x)\n",
-                                   claim->addr, claim->vid,
+                        seq_printf(seq, " * %pM on %5d by %pM [%c] (%#.4x)\n",
+                                   claim->addr, BATADV_PRINT_VID(claim->vid),
                                    claim->backbone_gw->orig,
                                    (is_own ? 'x' : ' '),
                                    claim->backbone_gw->crc);
@@ -1680,10 +1688,10 @@ int batadv_bla_backbone_table_seq_print_text(struct seq_file *seq, void *offset)
                         if (is_own)
                                 continue;
 
-                        seq_printf(seq,
-                                   " * %pM on % 5d % 4i.%03is (%#.4x)\n",
-                                   backbone_gw->orig, backbone_gw->vid,
-                                   secs, msecs, backbone_gw->crc);
+                        seq_printf(seq, " * %pM on %5d %4i.%03is (%#.4x)\n",
+                                   backbone_gw->orig,
+                                   BATADV_PRINT_VID(backbone_gw->vid), secs,
+                                   msecs, backbone_gw->crc);
                 }
                 rcu_read_unlock();
         }
diff --git a/net/batman-adv/bridge_loop_avoidance.h b/net/batman-adv/bridge_loop_avoidance.h
index dea2fbc5d98d..4b102e71e5bd 100644
--- a/net/batman-adv/bridge_loop_avoidance.h
+++ b/net/batman-adv/bridge_loop_avoidance.h
@@ -21,9 +21,10 @@
 #define _NET_BATMAN_ADV_BLA_H_
 
 #ifdef CONFIG_BATMAN_ADV_BLA
-int batadv_bla_rx(struct batadv_priv *bat_priv, struct sk_buff *skb, short vid,
-                  bool is_bcast);
-int batadv_bla_tx(struct batadv_priv *bat_priv, struct sk_buff *skb, short vid);
+int batadv_bla_rx(struct batadv_priv *bat_priv, struct sk_buff *skb,
+                  unsigned short vid, bool is_bcast);
+int batadv_bla_tx(struct batadv_priv *bat_priv, struct sk_buff *skb,
+                  unsigned short vid);
 int batadv_bla_is_backbone_gw(struct sk_buff *skb,
                               struct batadv_orig_node *orig_node, int hdr_size);
 int batadv_bla_claim_table_seq_print_text(struct seq_file *seq, void *offset);
@@ -42,13 +43,14 @@ void batadv_bla_free(struct batadv_priv *bat_priv);
 #else /* ifdef CONFIG_BATMAN_ADV_BLA */
 
 static inline int batadv_bla_rx(struct batadv_priv *bat_priv,
-                                struct sk_buff *skb, short vid, bool is_bcast)
+                                struct sk_buff *skb, unsigned short vid,
+                                bool is_bcast)
 {
         return 0;
 }
 
 static inline int batadv_bla_tx(struct batadv_priv *bat_priv,
-                                struct sk_buff *skb, short vid)
+                                struct sk_buff *skb, unsigned short vid)
 {
         return 0;
 }
diff --git a/net/batman-adv/distributed-arp-table.c b/net/batman-adv/distributed-arp-table.c
index 239992021b1d..06345d401588 100644
--- a/net/batman-adv/distributed-arp-table.c
+++ b/net/batman-adv/distributed-arp-table.c
@@ -45,9 +45,9 @@ static void batadv_dat_start_timer(struct batadv_priv *bat_priv)
 }
 
 /**
- * batadv_dat_entry_free_ref - decrements the dat_entry refcounter and possibly
+ * batadv_dat_entry_free_ref - decrement the dat_entry refcounter and possibly
  * free it
- * @dat_entry: the oentry to free
+ * @dat_entry: the entry to free
  */
 static void batadv_dat_entry_free_ref(struct batadv_dat_entry *dat_entry)
 {
@@ -56,10 +56,10 @@ static void batadv_dat_entry_free_ref(struct batadv_dat_entry *dat_entry)
 }
 
 /**
- * batadv_dat_to_purge - checks whether a dat_entry has to be purged or not
+ * batadv_dat_to_purge - check whether a dat_entry has to be purged or not
  * @dat_entry: the entry to check
  *
- * Returns true if the entry has to be purged now, false otherwise
+ * Returns true if the entry has to be purged now, false otherwise.
  */
 static bool batadv_dat_to_purge(struct batadv_dat_entry *dat_entry)
 {
@@ -75,8 +75,8 @@ static bool batadv_dat_to_purge(struct batadv_dat_entry *dat_entry)
  *            returns a boolean value: true is the entry has to be deleted,
  *            false otherwise
  *
- * Loops over each entry in the DAT local storage and delete it if and only if
- * the to_purge function passed as argument returns true
+ * Loops over each entry in the DAT local storage and deletes it if and only if
+ * the to_purge function passed as argument returns true.
  */
 static void __batadv_dat_purge(struct batadv_priv *bat_priv,
                                bool (*to_purge)(struct batadv_dat_entry *))
@@ -97,7 +97,7 @@ static void __batadv_dat_purge(struct batadv_priv *bat_priv,
                 spin_lock_bh(list_lock);
                 hlist_for_each_entry_safe(dat_entry, node_tmp, head,
                                           hash_entry) {
-                        /* if an helper function has been passed as parameter,
+                        /* if a helper function has been passed as parameter,
                          * ask it if the entry has to be purged or not
                          */
                         if (to_purge && !to_purge(dat_entry))
@@ -134,7 +134,7 @@ static void batadv_dat_purge(struct work_struct *work)
  * @node: node in the local table
  * @data2: second object to compare the node to
  *
- * Returns 1 if the two entry are the same, 0 otherwise
+ * Returns 1 if the two entries are the same, 0 otherwise.
  */
 static int batadv_compare_dat(const struct hlist_node *node, const void *data2)
 {
@@ -149,7 +149,7 @@ static int batadv_compare_dat(const struct hlist_node *node, const void *data2)
  * @skb: ARP packet
  * @hdr_size: size of the possible header before the ARP packet
  *
- * Returns the value of the hw_src field in the ARP packet
+ * Returns the value of the hw_src field in the ARP packet.
  */
 static uint8_t *batadv_arp_hw_src(struct sk_buff *skb, int hdr_size)
 {
@@ -166,7 +166,7 @@ static uint8_t *batadv_arp_hw_src(struct sk_buff *skb, int hdr_size)
  * @skb: ARP packet
  * @hdr_size: size of the possible header before the ARP packet
  *
- * Returns the value of the ip_src field in the ARP packet
+ * Returns the value of the ip_src field in the ARP packet.
  */
 static __be32 batadv_arp_ip_src(struct sk_buff *skb, int hdr_size)
 {
@@ -178,7 +178,7 @@ static __be32 batadv_arp_ip_src(struct sk_buff *skb, int hdr_size)
  * @skb: ARP packet
  * @hdr_size: size of the possible header before the ARP packet
  *
- * Returns the value of the hw_dst field in the ARP packet
+ * Returns the value of the hw_dst field in the ARP packet.
  */
 static uint8_t *batadv_arp_hw_dst(struct sk_buff *skb, int hdr_size)
 {
@@ -190,7 +190,7 @@ static uint8_t *batadv_arp_hw_dst(struct sk_buff *skb, int hdr_size)
  * @skb: ARP packet
  * @hdr_size: size of the possible header before the ARP packet
  *
- * Returns the value of the ip_dst field in the ARP packet
+ * Returns the value of the ip_dst field in the ARP packet.
  */
 static __be32 batadv_arp_ip_dst(struct sk_buff *skb, int hdr_size)
 {
@@ -202,7 +202,7 @@ static __be32 batadv_arp_ip_dst(struct sk_buff *skb, int hdr_size)
  * @data: data to hash
  * @size: size of the hash table
  *
- * Returns the selected index in the hash table for the given data
+ * Returns the selected index in the hash table for the given data.
  */
 static uint32_t batadv_hash_dat(const void *data, uint32_t size)
 {
@@ -224,12 +224,12 @@ static uint32_t batadv_hash_dat(const void *data, uint32_t size)
 }
 
 /**
- * batadv_dat_entry_hash_find - looks for a given dat_entry in the local hash
+ * batadv_dat_entry_hash_find - look for a given dat_entry in the local hash
  * table
  * @bat_priv: the bat priv with all the soft interface information
  * @ip: search key
  *
- * Returns the dat_entry if found, NULL otherwise
+ * Returns the dat_entry if found, NULL otherwise.
  */
 static struct batadv_dat_entry *
 batadv_dat_entry_hash_find(struct batadv_priv *bat_priv, __be32 ip)
@@ -343,9 +343,6 @@ static void batadv_dbg_arp(struct batadv_priv *bat_priv, struct sk_buff *skb,
         if (hdr_size == 0)
                 return;
 
-        /* if the ARP packet is encapsulated in a batman packet, let's print
-         * some debug messages
-         */
         unicast_4addr_packet = (struct batadv_unicast_4addr_packet *)skb->data;
 
         switch (unicast_4addr_packet->u.header.packet_type) {
@@ -409,7 +406,8 @@ static void batadv_dbg_arp(struct batadv_priv *bat_priv, struct sk_buff *skb,
  * @candidate: orig_node under evaluation
  * @max_orig_node: last selected candidate
  *
- * Returns true if the node has been elected as next candidate or false othrwise
+ * Returns true if the node has been elected as next candidate or false
+ * otherwise.
  */
 static bool batadv_is_orig_node_eligible(struct batadv_dat_candidate *res,
                                          int select, batadv_dat_addr_t tmp_max,
@@ -472,7 +470,7 @@ static void batadv_choose_next_candidate(struct batadv_priv *bat_priv,
          */
         cands[select].type = BATADV_DAT_CANDIDATE_NOT_FOUND;
 
-        /* iterate over the originator list and find the node with closest
+        /* iterate over the originator list and find the node with the closest
          * dat_address which has not been selected yet
          */
         for (i = 0; i < hash->size; i++) {
@@ -480,7 +478,7 @@ static void batadv_choose_next_candidate(struct batadv_priv *bat_priv,
 
                 rcu_read_lock();
                 hlist_for_each_entry_rcu(orig_node, head, hash_entry) {
-                        /* the dht space is a ring and addresses are unsigned */
+                        /* the dht space is a ring using unsigned addresses */
                         tmp_max = BATADV_DAT_ADDR_MAX - orig_node->dat_addr +
                                   ip_key;
 
@@ -512,7 +510,7 @@ static void batadv_choose_next_candidate(struct batadv_priv *bat_priv,
 }
 
 /**
- * batadv_dat_select_candidates - selects the nodes which the DHT message has to
+ * batadv_dat_select_candidates - select the nodes which the DHT message has to
  * be sent to
  * @bat_priv: the bat priv with all the soft interface information
  * @ip_dst: ipv4 to look up in the DHT
@@ -521,7 +519,7 @@ static void batadv_choose_next_candidate(struct batadv_priv *bat_priv,
  * closest values (from the LEFT, with wrap around if needed) then the hash
  * value of the key. ip_dst is the key.
  *
- * Returns the candidate array of size BATADV_DAT_CANDIDATE_NUM
+ * Returns the candidate array of size BATADV_DAT_CANDIDATE_NUM.
  */
 static struct batadv_dat_candidate *
 batadv_dat_select_candidates(struct batadv_priv *bat_priv, __be32 ip_dst)
@@ -558,10 +556,11 @@ batadv_dat_select_candidates(struct batadv_priv *bat_priv, __be32 ip_dst)
  * @ip: the DHT key
  * @packet_subtype: unicast4addr packet subtype to use
  *
- * In this function the skb is copied by means of pskb_copy() and is sent as
- * unicast packet to each of the selected candidates
+ * This function copies the skb with pskb_copy() and is sent as unicast packet
+ * to each of the selected candidates.
  *
- * Returns true if the packet is sent to at least one candidate, false otherwise
+ * Returns true if the packet is sent to at least one candidate, false
+ * otherwise.
  */
 static bool batadv_dat_send_data(struct batadv_priv *bat_priv,
                                  struct sk_buff *skb, __be32 ip,
@@ -727,7 +726,7 @@ out:
  * @skb: packet to analyse
  * @hdr_size: size of the possible header before the ARP packet in the skb
  *
- * Returns the ARP type if the skb contains a valid ARP packet, 0 otherwise
+ * Returns the ARP type if the skb contains a valid ARP packet, 0 otherwise.
  */
 static uint16_t batadv_arp_get_type(struct batadv_priv *bat_priv,
                                     struct sk_buff *skb, int hdr_size)
@@ -754,9 +753,7 @@ static uint16_t batadv_arp_get_type(struct batadv_priv *bat_priv,
 
         arphdr = (struct arphdr *)(skb->data + hdr_size + ETH_HLEN);
 
-        /* Check whether the ARP packet carries a valid
-         * IP information
-         */
+        /* check whether the ARP packet carries a valid IP information */
         if (arphdr->ar_hrd != htons(ARPHRD_ETHER))
                 goto out;
 
@@ -784,7 +781,7 @@ static uint16_t batadv_arp_get_type(struct batadv_priv *bat_priv,
         if (is_zero_ether_addr(hw_src) || is_multicast_ether_addr(hw_src))
                 goto out;
 
-        /* we don't care about the destination MAC address in ARP requests */
+        /* don't care about the destination MAC address in ARP requests */
         if (arphdr->ar_op != htons(ARPOP_REQUEST)) {
                 hw_dst = batadv_arp_hw_dst(skb, hdr_size);
                 if (is_zero_ether_addr(hw_dst) ||
@@ -804,8 +801,8 @@ out:
  * @skb: packet to check
  *
  * Returns true if the message has been sent to the dht candidates, false
- * otherwise. In case of true the message has to be enqueued to permit the
- * fallback
+ * otherwise. In case of a positive return value the message has to be enqueued
+ * to permit the fallback.
  */
 bool batadv_dat_snoop_outgoing_arp_request(struct batadv_priv *bat_priv,
                                            struct sk_buff *skb)
@@ -867,7 +864,7 @@ bool batadv_dat_snoop_outgoing_arp_request(struct batadv_priv *bat_priv,
                 batadv_dbg(BATADV_DBG_DAT, bat_priv, "ARP request replied locally\n");
                 ret = true;
         } else {
-                /* Send the request on the DHT */
+                /* Send the request to the DHT */
                 ret = batadv_dat_send_data(bat_priv, skb, ip_dst,
                                            BATADV_P_DAT_DHT_GET);
         }
@@ -884,7 +881,7 @@ out:
  * @skb: packet to check
  * @hdr_size: size of the encapsulation header
  *
- * Returns true if the request has been answered, false otherwise
+ * Returns true if the request has been answered, false otherwise.
  */
 bool batadv_dat_snoop_incoming_arp_request(struct batadv_priv *bat_priv,
                                            struct sk_buff *skb, int hdr_size)
@@ -924,10 +921,9 @@ bool batadv_dat_snoop_incoming_arp_request(struct batadv_priv *bat_priv,
         if (!skb_new)
                 goto out;
 
-        /* to preserve backwards compatibility, here the node has to answer
-         * using the same packet type it received for the request. This is due
-         * to that if a node is not using the 4addr packet format it may not
-         * support it.
+        /* To preserve backwards compatibility, the node has choose the outgoing
+         * format based on the incoming request packet type. The assumption is
+         * that a node not using the 4addr packet format doesn't support it.
          */
         if (hdr_size == sizeof(struct batadv_unicast_4addr_packet))
                 err = batadv_unicast_4addr_send_skb(bat_priv, skb_new,
@@ -977,7 +973,7 @@ void batadv_dat_snoop_outgoing_arp_reply(struct batadv_priv *bat_priv,
         batadv_dat_entry_add(bat_priv, ip_dst, hw_dst);
 
         /* Send the ARP reply to the candidates for both the IP addresses that
-         * the node got within the ARP reply
+         * the node obtained from the ARP reply
          */
         batadv_dat_send_data(bat_priv, skb, ip_src, BATADV_P_DAT_DHT_PUT);
         batadv_dat_send_data(bat_priv, skb, ip_dst, BATADV_P_DAT_DHT_PUT);
@@ -987,7 +983,7 @@ void batadv_dat_snoop_outgoing_arp_reply(struct batadv_priv *bat_priv,
  * DAT storage only
  * @bat_priv: the bat priv with all the soft interface information
  * @skb: packet to check
- * @hdr_size: siaze of the encapsulation header
+ * @hdr_size: size of the encapsulation header
  */
 bool batadv_dat_snoop_incoming_arp_reply(struct batadv_priv *bat_priv,
                                          struct sk_buff *skb, int hdr_size)
@@ -1031,11 +1027,11 @@ out:
 
 /**
  * batadv_dat_drop_broadcast_packet - check if an ARP request has to be dropped
- * (because the node has already got the reply via DAT) or not
+ * (because the node has already obtained the reply via DAT) or not
  * @bat_priv: the bat priv with all the soft interface information
  * @forw_packet: the broadcast packet
  *
- * Returns true if the node can drop the packet, false otherwise
+ * Returns true if the node can drop the packet, false otherwise.
  */
 bool batadv_dat_drop_broadcast_packet(struct batadv_priv *bat_priv,
                                       struct batadv_forw_packet *forw_packet)
diff --git a/net/batman-adv/hard-interface.c b/net/batman-adv/hard-interface.c
index 522243aff2f3..c478e6bcf89b 100644
--- a/net/batman-adv/hard-interface.c
+++ b/net/batman-adv/hard-interface.c
@@ -117,6 +117,58 @@ static int batadv_is_valid_iface(const struct net_device *net_dev)
         return 1;
 }
 
+/**
+ * batadv_is_wifi_netdev - check if the given net_device struct is a wifi
+ *  interface
+ * @net_device: the device to check
+ *
+ * Returns true if the net device is a 802.11 wireless device, false otherwise.
+ */
+static bool batadv_is_wifi_netdev(struct net_device *net_device)
+{
+#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)
+                return true;
+#endif
+
+        /* cfg80211 drivers have to set ieee80211_ptr */
+        if (net_device->ieee80211_ptr)
+                return true;
+
+        return false;
+}
+
+/**
+ * batadv_is_wifi_iface - check if the given interface represented by ifindex
+ *  is a wifi interface
+ * @ifindex: interface index to check
+ *
+ * Returns true if the interface represented by ifindex is a 802.11 wireless
+ * device, false otherwise.
+ */
+bool batadv_is_wifi_iface(int ifindex)
+{
+        struct net_device *net_device = NULL;
+        bool ret = false;
+
+        if (ifindex == BATADV_NULL_IFINDEX)
+                goto out;
+
+        net_device = dev_get_by_index(&init_net, ifindex);
+        if (!net_device)
+                goto out;
+
+        ret = batadv_is_wifi_netdev(net_device);
+
+out:
+        if (net_device)
+                dev_put(net_device);
+        return ret;
+}
+
 static struct batadv_hard_iface *
 batadv_hardif_get_active(const struct net_device *soft_iface)
 {
@@ -525,7 +577,7 @@ batadv_hardif_add_interface(struct net_device *net_dev)
 
         dev_hold(net_dev);
 
-        hard_iface = kmalloc(sizeof(*hard_iface), GFP_ATOMIC);
+        hard_iface = kzalloc(sizeof(*hard_iface), GFP_ATOMIC);
         if (!hard_iface)
                 goto release_dev;
 
@@ -541,18 +593,16 @@ batadv_hardif_add_interface(struct net_device *net_dev)
         INIT_WORK(&hard_iface->cleanup_work,
                   batadv_hardif_remove_interface_finish);
 
+        hard_iface->num_bcasts = BATADV_NUM_BCASTS_DEFAULT;
+        if (batadv_is_wifi_netdev(net_dev))
+                hard_iface->num_bcasts = BATADV_NUM_BCASTS_WIRELESS;
+
         /* extra reference for return */
         atomic_set(&hard_iface->refcount, 2);
 
         batadv_check_known_mac_addr(hard_iface->net_dev);
         list_add_tail_rcu(&hard_iface->list, &batadv_hardif_list);
 
-        /* This can't be called via a bat_priv callback because
-         * we have no bat_priv yet.
-         */
-        atomic_set(&hard_iface->bat_iv.ogm_seqno, 1);
-        hard_iface->bat_iv.ogm_buff = NULL;
-
         return hard_iface;
 
 free_if:
@@ -595,7 +645,7 @@ void batadv_hardif_remove_interfaces(void)
 static int batadv_hard_if_event(struct notifier_block *this,
                                 unsigned long event, void *ptr)
 {
-        struct net_device *net_dev = ptr;
+        struct net_device *net_dev = netdev_notifier_info_to_dev(ptr);
         struct batadv_hard_iface *hard_iface;
         struct batadv_hard_iface *primary_if = NULL;
         struct batadv_priv *bat_priv;
@@ -657,38 +707,6 @@ out:
         return NOTIFY_DONE;
 }
 
-/* This function returns true if the interface represented by ifindex is a
- * 802.11 wireless device
- */
-bool batadv_is_wifi_iface(int ifindex)
-{
-        struct net_device *net_device = NULL;
-        bool ret = false;
-
-        if (ifindex == BATADV_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 batadv_hard_if_notifier = {
         .notifier_call = batadv_hard_if_event,
 };
diff --git a/net/batman-adv/icmp_socket.c b/net/batman-adv/icmp_socket.c
index 0ba6c899b2d3..b27508b8085c 100644
--- a/net/batman-adv/icmp_socket.c
+++ b/net/batman-adv/icmp_socket.c
@@ -177,13 +177,13 @@ static ssize_t batadv_socket_write(struct file *file, const char __user *buff,
         if (len >= sizeof(struct batadv_icmp_packet_rr))
                 packet_len = sizeof(struct batadv_icmp_packet_rr);
 
-        skb = dev_alloc_skb(packet_len + ETH_HLEN + NET_IP_ALIGN);
+        skb = netdev_alloc_skb_ip_align(NULL, packet_len + ETH_HLEN);
         if (!skb) {
                 len = -ENOMEM;
                 goto out;
         }
 
-        skb_reserve(skb, ETH_HLEN + NET_IP_ALIGN);
+        skb_reserve(skb, ETH_HLEN);
         icmp_packet = (struct batadv_icmp_packet_rr *)skb_put(skb, packet_len);
 
         if (copy_from_user(icmp_packet, buff, packet_len)) {
diff --git a/net/batman-adv/main.c b/net/batman-adv/main.c
index 51aafd669cbb..08125f3f6064 100644
--- a/net/batman-adv/main.c
+++ b/net/batman-adv/main.c
@@ -473,7 +473,6 @@ __be32 batadv_skb_crc32(struct sk_buff *skb, u8 *payload_ptr)
                 crc = crc32c(crc, data, len);
                 consumed += len;
         }
-        skb_abort_seq_read(&st);
 
         return htonl(crc);
 }
diff --git a/net/batman-adv/main.h b/net/batman-adv/main.h
index 59a0d6af15c8..5e9aebb7d56b 100644
--- a/net/batman-adv/main.h
+++ b/net/batman-adv/main.h
@@ -26,7 +26,7 @@
 #define BATADV_DRIVER_DEVICE "batman-adv"
 
 #ifndef BATADV_SOURCE_VERSION
-#define BATADV_SOURCE_VERSION "2013.2.0"
+#define BATADV_SOURCE_VERSION "2013.3.0"
 #endif
 
 /* B.A.T.M.A.N. parameters */
@@ -76,6 +76,11 @@
 
 #define BATADV_LOG_BUF_LEN 8192   /* has to be a power of 2 */
 
+/* number of packets to send for broadcasts on different interface types */
+#define BATADV_NUM_BCASTS_DEFAULT 1
+#define BATADV_NUM_BCASTS_WIRELESS 3
+#define BATADV_NUM_BCASTS_MAX 3
+
 /* msecs after which an ARP_REQUEST is sent in broadcast as fallback */
 #define ARP_REQ_DELAY 250
 /* numbers of originator to contact for any PUT/GET DHT operation */
@@ -157,6 +162,17 @@ enum batadv_uev_type {
 #include <linux/seq_file.h>
 #include "types.h"
 
+/**
+ * batadv_vlan_flags - flags for the four MSB of any vlan ID field
+ * @BATADV_VLAN_HAS_TAG: whether the field contains a valid vlan tag or not
+ */
+enum batadv_vlan_flags {
+        BATADV_VLAN_HAS_TAG     = BIT(15),
+};
+
+#define BATADV_PRINT_VID(vid) (vid & BATADV_VLAN_HAS_TAG ? \
+                               (int)(vid & VLAN_VID_MASK) : -1)
+
 extern char batadv_routing_algo[];
 extern struct list_head batadv_hardif_list;
 
diff --git a/net/batman-adv/network-coding.c b/net/batman-adv/network-coding.c
index e84629ece9b7..a487d46e0aec 100644
--- a/net/batman-adv/network-coding.c
+++ b/net/batman-adv/network-coding.c
@@ -1245,7 +1245,7 @@ static void batadv_nc_skb_store_before_coding(struct batadv_priv *bat_priv,
                 return;
 
         /* Set the mac header as if we actually sent the packet uncoded */
-        ethhdr = (struct ethhdr *)skb_mac_header(skb);
+        ethhdr = eth_hdr(skb);
         memcpy(ethhdr->h_source, ethhdr->h_dest, ETH_ALEN);
         memcpy(ethhdr->h_dest, eth_dst_new, ETH_ALEN);
 
@@ -1359,18 +1359,17 @@ static bool batadv_nc_skb_add_to_path(struct sk_buff *skb,
  *  buffer
  * @skb: data skb to forward
  * @neigh_node: next hop to forward packet to
- * @ethhdr: pointer to the ethernet header inside the skb
  *
  * Returns true if the skb was consumed (encoded packet sent) or false otherwise
  */
 bool batadv_nc_skb_forward(struct sk_buff *skb,
-                           struct batadv_neigh_node *neigh_node,
-                           struct ethhdr *ethhdr)
+                           struct batadv_neigh_node *neigh_node)
 {
         const struct net_device *netdev = neigh_node->if_incoming->soft_iface;
         struct batadv_priv *bat_priv = netdev_priv(netdev);
         struct batadv_unicast_packet *packet;
         struct batadv_nc_path *nc_path;
+        struct ethhdr *ethhdr = eth_hdr(skb);
         __be32 packet_id;
         u8 *payload;
 
@@ -1423,7 +1422,7 @@ void batadv_nc_skb_store_for_decoding(struct batadv_priv *bat_priv,
 {
         struct batadv_unicast_packet *packet;
         struct batadv_nc_path *nc_path;
-        struct ethhdr *ethhdr = (struct ethhdr *)skb_mac_header(skb);
+        struct ethhdr *ethhdr = eth_hdr(skb);
         __be32 packet_id;
         u8 *payload;
 
@@ -1482,7 +1481,7 @@ out:
 void batadv_nc_skb_store_sniffed_unicast(struct batadv_priv *bat_priv,
                                          struct sk_buff *skb)
 {
-        struct ethhdr *ethhdr = (struct ethhdr *)skb_mac_header(skb);
+        struct ethhdr *ethhdr = eth_hdr(skb);
 
         if (batadv_is_my_mac(bat_priv, ethhdr->h_dest))
                 return;
@@ -1533,7 +1532,7 @@ batadv_nc_skb_decode_packet(struct batadv_priv *bat_priv, struct sk_buff *skb,
         skb_reset_network_header(skb);
 
         /* Reconstruct original mac header */
-        ethhdr = (struct ethhdr *)skb_mac_header(skb);
+        ethhdr = eth_hdr(skb);
         memcpy(ethhdr, &ethhdr_tmp, sizeof(*ethhdr));
 
         /* Select the correct unicast header information based on the location
@@ -1677,7 +1676,7 @@ static int batadv_nc_recv_coded_packet(struct sk_buff *skb,
                 return NET_RX_DROP;
 
         coded_packet = (struct batadv_coded_packet *)skb->data;
-        ethhdr = (struct ethhdr *)skb_mac_header(skb);
+        ethhdr = eth_hdr(skb);
 
         /* Verify frame is destined for us */
         if (!batadv_is_my_mac(bat_priv, ethhdr->h_dest) &&
@@ -1763,6 +1762,13 @@ int batadv_nc_nodes_seq_print_text(struct seq_file *seq, void *offset)
                 /* For each orig_node in this bin */
                 rcu_read_lock();
                 hlist_for_each_entry_rcu(orig_node, head, hash_entry) {
+                        /* no need to print the orig node if it does not have
+                         * network coding neighbors
+                         */
+                        if (list_empty(&orig_node->in_coding_list) &&
+                            list_empty(&orig_node->out_coding_list))
+                                continue;
+
                         seq_printf(seq, "Node:      %pM\n", orig_node->orig);
 
                         seq_puts(seq, " Ingoing:  ");
diff --git a/net/batman-adv/network-coding.h b/net/batman-adv/network-coding.h
index 4fa6d0caddbd..85a4ec81ad50 100644
--- a/net/batman-adv/network-coding.h
+++ b/net/batman-adv/network-coding.h
@@ -36,8 +36,7 @@ void batadv_nc_purge_orig(struct batadv_priv *bat_priv,
 void batadv_nc_init_bat_priv(struct batadv_priv *bat_priv);
 void batadv_nc_init_orig(struct batadv_orig_node *orig_node);
 bool batadv_nc_skb_forward(struct sk_buff *skb,
-                           struct batadv_neigh_node *neigh_node,
-                           struct ethhdr *ethhdr);
+                           struct batadv_neigh_node *neigh_node);
 void batadv_nc_skb_store_for_decoding(struct batadv_priv *bat_priv,
                                       struct sk_buff *skb);
 void batadv_nc_skb_store_sniffed_unicast(struct batadv_priv *bat_priv,
@@ -87,8 +86,7 @@ static inline void batadv_nc_init_orig(struct batadv_orig_node *orig_node)
 }
 
 static inline bool batadv_nc_skb_forward(struct sk_buff *skb,
-                                         struct batadv_neigh_node *neigh_node,
-                                         struct ethhdr *ethhdr)
+                                         struct batadv_neigh_node *neigh_node)
 {
         return false;
 }
diff --git a/net/batman-adv/originator.c b/net/batman-adv/originator.c
index fad1a2093e15..f50553a7de62 100644
--- a/net/batman-adv/originator.c
+++ b/net/batman-adv/originator.c
@@ -92,7 +92,7 @@ batadv_orig_node_get_router(struct batadv_orig_node *orig_node)
 
 struct batadv_neigh_node *
 batadv_neigh_node_new(struct batadv_hard_iface *hard_iface,
-                      const uint8_t *neigh_addr, uint32_t seqno)
+                      const uint8_t *neigh_addr)
 {
         struct batadv_priv *bat_priv = netdev_priv(hard_iface->soft_iface);
         struct batadv_neigh_node *neigh_node;
@@ -110,8 +110,8 @@ batadv_neigh_node_new(struct batadv_hard_iface *hard_iface,
         atomic_set(&neigh_node->refcount, 2);
 
         batadv_dbg(BATADV_DBG_BATMAN, bat_priv,
-                   "Creating new neighbor %pM, initial seqno %d\n",
-                   neigh_addr, seqno);
+                   "Creating new neighbor %pM on interface %s\n", neigh_addr,
+                   hard_iface->net_dev->name);
 
 out:
         return neigh_node;
diff --git a/net/batman-adv/originator.h b/net/batman-adv/originator.h
index 734e5a3d8a5b..7887b84a9af4 100644
--- a/net/batman-adv/originator.h
+++ b/net/batman-adv/originator.h
@@ -31,7 +31,7 @@ struct batadv_orig_node *batadv_get_orig_node(struct batadv_priv *bat_priv,
                                               const uint8_t *addr);
 struct batadv_neigh_node *
 batadv_neigh_node_new(struct batadv_hard_iface *hard_iface,
-                      const uint8_t *neigh_addr, uint32_t seqno);
+                      const uint8_t *neigh_addr);
 void batadv_neigh_node_free_ref(struct batadv_neigh_node *neigh_node);
 struct batadv_neigh_node *
 batadv_orig_node_get_router(struct batadv_orig_node *orig_node);
diff --git a/net/batman-adv/ring_buffer.c b/net/batman-adv/ring_buffer.c
deleted file mode 100644
index ccab0bbdbb59..000000000000
--- a/net/batman-adv/ring_buffer.c
+++ /dev/null
@@ -1,51 +0,0 @@
-/* Copyright (C) 2007-2013 B.A.T.M.A.N. contributors:
- *
- * Marek Lindner
- *
- * 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 "ring_buffer.h"
-
-void batadv_ring_buffer_set(uint8_t lq_recv[], uint8_t *lq_index,
-                            uint8_t value)
-{
-        lq_recv[*lq_index] = value;
-        *lq_index = (*lq_index + 1) % BATADV_TQ_GLOBAL_WINDOW_SIZE;
-}
-
-uint8_t batadv_ring_buffer_avg(const uint8_t lq_recv[])
-{
-        const uint8_t *ptr;
-        uint16_t count = 0, i = 0, sum = 0;
-
-        ptr = lq_recv;
-
-        while (i < BATADV_TQ_GLOBAL_WINDOW_SIZE) {
-                if (*ptr != 0) {
-                        count++;
-                        sum += *ptr;
-                }
-
-                i++;
-                ptr++;
-        }
-
-        if (count == 0)
-                return 0;
-
-        return (uint8_t)(sum / count);
-}
diff --git a/net/batman-adv/ring_buffer.h b/net/batman-adv/ring_buffer.h
deleted file mode 100644
index 3f92ae248e83..000000000000
--- a/net/batman-adv/ring_buffer.h
+++ /dev/null
@@ -1,27 +0,0 @@
-/* Copyright (C) 2007-2013 B.A.T.M.A.N. contributors:
- *
- * Marek Lindner
- *
- * 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_RING_BUFFER_H_
-#define _NET_BATMAN_ADV_RING_BUFFER_H_
-
-void batadv_ring_buffer_set(uint8_t lq_recv[], uint8_t *lq_index,
-                            uint8_t value);
-uint8_t batadv_ring_buffer_avg(const uint8_t lq_recv[]);
-
-#endif /* _NET_BATMAN_ADV_RING_BUFFER_H_ */
diff --git a/net/batman-adv/routing.c b/net/batman-adv/routing.c
index b27a4d792d15..2f0bd3ffe6e8 100644
--- a/net/batman-adv/routing.c
+++ b/net/batman-adv/routing.c
@@ -34,35 +34,6 @@
 static int batadv_route_unicast_packet(struct sk_buff *skb,
                                        struct batadv_hard_iface *recv_if);
 
-void batadv_slide_own_bcast_window(struct batadv_hard_iface *hard_iface)
-{
-        struct batadv_priv *bat_priv = netdev_priv(hard_iface->soft_iface);
-        struct batadv_hashtable *hash = bat_priv->orig_hash;
-        struct hlist_head *head;
-        struct batadv_orig_node *orig_node;
-        unsigned long *word;
-        uint32_t i;
-        size_t word_index;
-        uint8_t *w;
-
-        for (i = 0; i < hash->size; i++) {
-                head = &hash->table[i];
-
-                rcu_read_lock();
-                hlist_for_each_entry_rcu(orig_node, head, hash_entry) {
-                        spin_lock_bh(&orig_node->ogm_cnt_lock);
-                        word_index = hard_iface->if_num * BATADV_NUM_WORDS;
-                        word = &(orig_node->bcast_own[word_index]);
-
-                        batadv_bit_get_packet(bat_priv, word, 1, 0);
-                        w = &orig_node->bcast_own_sum[hard_iface->if_num];
-                        *w = bitmap_weight(word, BATADV_TQ_LOCAL_WINDOW_SIZE);
-                        spin_unlock_bh(&orig_node->ogm_cnt_lock);
-                }
-                rcu_read_unlock();
-        }
-}
-
 static void _batadv_update_route(struct batadv_priv *bat_priv,
                                  struct batadv_orig_node *orig_node,
                                  struct batadv_neigh_node *neigh_node)
@@ -256,7 +227,7 @@ bool batadv_check_management_packet(struct sk_buff *skb,
         if (unlikely(!pskb_may_pull(skb, header_len)))
                 return false;
 
-        ethhdr = (struct ethhdr *)skb_mac_header(skb);
+        ethhdr = eth_hdr(skb);
 
         /* packet with broadcast indication but unicast recipient */
         if (!is_broadcast_ether_addr(ethhdr->h_dest))
@@ -314,7 +285,7 @@ static int batadv_recv_my_icmp_packet(struct batadv_priv *bat_priv,
         icmp_packet->msg_type = BATADV_ECHO_REPLY;
         icmp_packet->header.ttl = BATADV_TTL;
 
-        if (batadv_send_skb_to_orig(skb, orig_node, NULL))
+        if (batadv_send_skb_to_orig(skb, orig_node, NULL) != NET_XMIT_DROP)
                 ret = NET_RX_SUCCESS;
 
 out:
@@ -362,7 +333,7 @@ static int batadv_recv_icmp_ttl_exceeded(struct batadv_priv *bat_priv,
         icmp_packet->msg_type = BATADV_TTL_EXCEEDED;
         icmp_packet->header.ttl = BATADV_TTL;
 
-        if (batadv_send_skb_to_orig(skb, orig_node, NULL))
+        if (batadv_send_skb_to_orig(skb, orig_node, NULL) != NET_XMIT_DROP)
                 ret = NET_RX_SUCCESS;
 
 out:
@@ -392,7 +363,7 @@ int batadv_recv_icmp_packet(struct sk_buff *skb,
         if (unlikely(!pskb_may_pull(skb, hdr_size)))
                 goto out;
 
-        ethhdr = (struct ethhdr *)skb_mac_header(skb);
+        ethhdr = eth_hdr(skb);
 
         /* packet with unicast indication but broadcast recipient */
         if (is_broadcast_ether_addr(ethhdr->h_dest))
@@ -439,7 +410,7 @@ int batadv_recv_icmp_packet(struct sk_buff *skb,
         icmp_packet->header.ttl--;
 
         /* route it */
-        if (batadv_send_skb_to_orig(skb, orig_node, recv_if))
+        if (batadv_send_skb_to_orig(skb, orig_node, recv_if) != NET_XMIT_DROP)
                 ret = NET_RX_SUCCESS;
 
 out:
@@ -569,7 +540,7 @@ static int batadv_check_unicast_packet(struct batadv_priv *bat_priv,
         if (unlikely(!pskb_may_pull(skb, hdr_size)))
                 return -ENODATA;
 
-        ethhdr = (struct ethhdr *)skb_mac_header(skb);
+        ethhdr = eth_hdr(skb);
 
         /* packet with unicast indication but broadcast recipient */
         if (is_broadcast_ether_addr(ethhdr->h_dest))
@@ -803,8 +774,8 @@ static int batadv_route_unicast_packet(struct sk_buff *skb,
         struct batadv_orig_node *orig_node = NULL;
         struct batadv_neigh_node *neigh_node = NULL;
         struct batadv_unicast_packet *unicast_packet;
-        struct ethhdr *ethhdr = (struct ethhdr *)skb_mac_header(skb);
-        int ret = NET_RX_DROP;
+        struct ethhdr *ethhdr = eth_hdr(skb);
+        int res, ret = NET_RX_DROP;
         struct sk_buff *new_skb;
 
         unicast_packet = (struct batadv_unicast_packet *)skb->data;
@@ -864,16 +835,19 @@ static int batadv_route_unicast_packet(struct sk_buff *skb,
         /* decrement ttl */
         unicast_packet->header.ttl--;
 
-        /* network code packet if possible */
-        if (batadv_nc_skb_forward(skb, neigh_node, ethhdr)) {
-                ret = NET_RX_SUCCESS;
-        } else if (batadv_send_skb_to_orig(skb, orig_node, recv_if)) {
-                ret = NET_RX_SUCCESS;
+        res = batadv_send_skb_to_orig(skb, orig_node, recv_if);
 
-                /* Update stats counter */
+        /* translate transmit result into receive result */
+        if (res == NET_XMIT_SUCCESS) {
+                /* skb was transmitted and consumed */
                 batadv_inc_counter(bat_priv, BATADV_CNT_FORWARD);
                 batadv_add_counter(bat_priv, BATADV_CNT_FORWARD_BYTES,
                                    skb->len + ETH_HLEN);
+
+                ret = NET_RX_SUCCESS;
+        } else if (res == NET_XMIT_POLICED) {
+                /* skb was buffered and consumed */
+                ret = NET_RX_SUCCESS;
         }
 
 out:
@@ -1165,7 +1139,7 @@ int batadv_recv_bcast_packet(struct sk_buff *skb,
         if (unlikely(!pskb_may_pull(skb, hdr_size)))
                 goto out;
 
-        ethhdr = (struct ethhdr *)skb_mac_header(skb);
+        ethhdr = eth_hdr(skb);
 
         /* packet with broadcast indication but unicast recipient */
         if (!is_broadcast_ether_addr(ethhdr->h_dest))
@@ -1265,7 +1239,7 @@ int batadv_recv_vis_packet(struct sk_buff *skb,
                 return NET_RX_DROP;
 
         vis_packet = (struct batadv_vis_packet *)skb->data;
-        ethhdr = (struct ethhdr *)skb_mac_header(skb);
+        ethhdr = eth_hdr(skb);
 
         /* not for me */
         if (!batadv_is_my_mac(bat_priv, ethhdr->h_dest))
diff --git a/net/batman-adv/routing.h b/net/batman-adv/routing.h
index 99eeafaba407..72a29bde2010 100644
--- a/net/batman-adv/routing.h
+++ b/net/batman-adv/routing.h
@@ -20,7 +20,6 @@
 #ifndef _NET_BATMAN_ADV_ROUTING_H_
 #define _NET_BATMAN_ADV_ROUTING_H_
 
-void batadv_slide_own_bcast_window(struct batadv_hard_iface *hard_iface);
 bool batadv_check_management_packet(struct sk_buff *skb,
                                     struct batadv_hard_iface *hard_iface,
                                     int header_len);
diff --git a/net/batman-adv/send.c b/net/batman-adv/send.c
index 263cfd1ccee7..e9ff8d801201 100644
--- a/net/batman-adv/send.c
+++ b/net/batman-adv/send.c
@@ -61,7 +61,7 @@ int batadv_send_skb_packet(struct sk_buff *skb,
 
         skb_reset_mac_header(skb);
 
-        ethhdr = (struct ethhdr *)skb_mac_header(skb);
+        ethhdr = eth_hdr(skb);
         memcpy(ethhdr->h_source, hard_iface->net_dev->dev_addr, ETH_ALEN);
         memcpy(ethhdr->h_dest, dst_addr, ETH_ALEN);
         ethhdr->h_proto = __constant_htons(ETH_P_BATMAN);
@@ -96,26 +96,37 @@ send_skb_err:
  * host, NULL can be passed as recv_if and no interface alternating is
  * attempted.
  *
- * Returns TRUE on success; FALSE otherwise.
+ * Returns NET_XMIT_SUCCESS on success, NET_XMIT_DROP on failure, or
+ * NET_XMIT_POLICED if the skb is buffered for later transmit.
  */
-bool batadv_send_skb_to_orig(struct sk_buff *skb,
-                             struct batadv_orig_node *orig_node,
-                             struct batadv_hard_iface *recv_if)
+int batadv_send_skb_to_orig(struct sk_buff *skb,
+                            struct batadv_orig_node *orig_node,
+                            struct batadv_hard_iface *recv_if)
 {
         struct batadv_priv *bat_priv = orig_node->bat_priv;
         struct batadv_neigh_node *neigh_node;
+        int ret = NET_XMIT_DROP;
 
         /* batadv_find_router() increases neigh_nodes refcount if found. */
         neigh_node = batadv_find_router(bat_priv, orig_node, recv_if);
         if (!neigh_node)
-                return false;
+                return ret;
 
-        /* route it */
-        batadv_send_skb_packet(skb, neigh_node->if_incoming, neigh_node->addr);
+        /* try to network code the packet, if it is received on an interface
+         * (i.e. being forwarded). If the packet originates from this node or if
+         * network coding fails, then send the packet as usual.
+         */
+        if (recv_if && batadv_nc_skb_forward(skb, neigh_node)) {
+                ret = NET_XMIT_POLICED;
+        } else {
+                batadv_send_skb_packet(skb, neigh_node->if_incoming,
+                                       neigh_node->addr);
+                ret = NET_XMIT_SUCCESS;
+        }
 
         batadv_neigh_node_free_ref(neigh_node);
 
-        return true;
+        return ret;
 }
 
 void batadv_schedule_bat_ogm(struct batadv_hard_iface *hard_iface)
@@ -152,8 +163,6 @@ _batadv_add_bcast_packet_to_list(struct batadv_priv *bat_priv,
                                  struct batadv_forw_packet *forw_packet,
                                  unsigned long send_time)
 {
-        INIT_HLIST_NODE(&forw_packet->list);
-
         /* add new packet to packet list */
         spin_lock_bh(&bat_priv->forw_bcast_list_lock);
         hlist_add_head(&forw_packet->list, &bat_priv->forw_bcast_list);
@@ -260,6 +269,9 @@ static void batadv_send_outstanding_bcast_packet(struct work_struct *work)
                 if (hard_iface->soft_iface != soft_iface)
                         continue;
 
+                if (forw_packet->num_packets >= hard_iface->num_bcasts)
+                        continue;
+
                 /* send a copy of the saved skb */
                 skb1 = skb_clone(forw_packet->skb, GFP_ATOMIC);
                 if (skb1)
@@ -271,7 +283,7 @@ static void batadv_send_outstanding_bcast_packet(struct work_struct *work)
         forw_packet->num_packets++;
 
         /* if we still have some more bcasts to send */
-        if (forw_packet->num_packets < 3) {
+        if (forw_packet->num_packets < BATADV_NUM_BCASTS_MAX) {
                 _batadv_add_bcast_packet_to_list(bat_priv, forw_packet,
                                                  msecs_to_jiffies(5));
                 return;
diff --git a/net/batman-adv/send.h b/net/batman-adv/send.h
index 38e662f619ac..e7b17880fca4 100644
--- a/net/batman-adv/send.h
+++ b/net/batman-adv/send.h
@@ -23,9 +23,9 @@
 int batadv_send_skb_packet(struct sk_buff *skb,
                            struct batadv_hard_iface *hard_iface,
                            const uint8_t *dst_addr);
-bool batadv_send_skb_to_orig(struct sk_buff *skb,
-                             struct batadv_orig_node *orig_node,
-                             struct batadv_hard_iface *recv_if);
+int batadv_send_skb_to_orig(struct sk_buff *skb,
+                            struct batadv_orig_node *orig_node,
+                            struct batadv_hard_iface *recv_if);
 void batadv_schedule_bat_ogm(struct batadv_hard_iface *hard_iface);
 int batadv_add_bcast_packet_to_list(struct batadv_priv *bat_priv,
                                     const struct sk_buff *skb,
diff --git a/net/batman-adv/soft-interface.c b/net/batman-adv/soft-interface.c
index 819dfb006cdf..700d0b49742d 100644
--- a/net/batman-adv/soft-interface.c
+++ b/net/batman-adv/soft-interface.c
@@ -154,7 +154,7 @@ static int batadv_interface_tx(struct sk_buff *skb,
                                                     0x00, 0x00};
         unsigned int header_len = 0;
         int data_len = skb->len, ret;
-        short vid __maybe_unused = -1;
+        unsigned short vid __maybe_unused = BATADV_NO_FLAGS;
         bool do_bcast = false;
         uint32_t seqno;
         unsigned long brd_delay = 1;
@@ -303,7 +303,7 @@ void batadv_interface_rx(struct net_device *soft_iface,
         struct ethhdr *ethhdr;
         struct vlan_ethhdr *vhdr;
         struct batadv_header *batadv_header = (struct batadv_header *)skb->data;
-        short vid __maybe_unused = -1;
+        unsigned short vid __maybe_unused = BATADV_NO_FLAGS;
         __be16 ethertype = __constant_htons(ETH_P_BATMAN);
         bool is_bcast;
 
@@ -316,7 +316,7 @@ void batadv_interface_rx(struct net_device *soft_iface,
         skb_pull_rcsum(skb, hdr_size);
         skb_reset_mac_header(skb);
 
-        ethhdr = (struct ethhdr *)skb_mac_header(skb);
+        ethhdr = eth_hdr(skb);
 
         switch (ntohs(ethhdr->h_proto)) {
         case ETH_P_8021Q:
diff --git a/net/batman-adv/translation-table.c b/net/batman-adv/translation-table.c
index 9e8748575845..429aeef3d8b2 100644
--- a/net/batman-adv/translation-table.c
+++ b/net/batman-adv/translation-table.c
@@ -163,10 +163,19 @@ batadv_tt_orig_list_entry_free_ref(struct batadv_tt_orig_list_entry *orig_entry)
         call_rcu(&orig_entry->rcu, batadv_tt_orig_list_entry_free_rcu);
 }
 
+/**
+ * batadv_tt_local_event - store a local TT event (ADD/DEL)
+ * @bat_priv: the bat priv with all the soft interface information
+ * @tt_local_entry: the TT entry involved in the event
+ * @event_flags: flags to store in the event structure
+ */
 static void batadv_tt_local_event(struct batadv_priv *bat_priv,
-                                  const uint8_t *addr, uint8_t flags)
+                                  struct batadv_tt_local_entry *tt_local_entry,
+                                  uint8_t event_flags)
 {
         struct batadv_tt_change_node *tt_change_node, *entry, *safe;
+        struct batadv_tt_common_entry *common = &tt_local_entry->common;
+        uint8_t flags = common->flags | event_flags;
         bool event_removed = false;
         bool del_op_requested, del_op_entry;
 
@@ -176,7 +185,7 @@ static void batadv_tt_local_event(struct batadv_priv *bat_priv,
                 return;
 
         tt_change_node->change.flags = flags;
-        memcpy(tt_change_node->change.addr, addr, ETH_ALEN);
+        memcpy(tt_change_node->change.addr, common->addr, ETH_ALEN);
 
         del_op_requested = flags & BATADV_TT_CLIENT_DEL;
 
@@ -184,7 +193,7 @@ static void batadv_tt_local_event(struct batadv_priv *bat_priv,
         spin_lock_bh(&bat_priv->tt.changes_list_lock);
         list_for_each_entry_safe(entry, safe, &bat_priv->tt.changes_list,
                                  list) {
-                if (!batadv_compare_eth(entry->change.addr, addr))
+                if (!batadv_compare_eth(entry->change.addr, common->addr))
                         continue;
 
                 /* DEL+ADD in the same orig interval have no effect and can be
@@ -332,7 +341,7 @@ void batadv_tt_local_add(struct net_device *soft_iface, const uint8_t *addr,
         }
 
 add_event:
-        batadv_tt_local_event(bat_priv, addr, tt_local->common.flags);
+        batadv_tt_local_event(bat_priv, tt_local, BATADV_NO_FLAGS);
 
 check_roaming:
         /* Check whether it is a roaming, but don't do anything if the roaming
@@ -529,8 +538,7 @@ batadv_tt_local_set_pending(struct batadv_priv *bat_priv,
                             struct batadv_tt_local_entry *tt_local_entry,
                             uint16_t flags, const char *message)
 {
-        batadv_tt_local_event(bat_priv, tt_local_entry->common.addr,
-                              tt_local_entry->common.flags | flags);
+        batadv_tt_local_event(bat_priv, tt_local_entry, flags);
 
         /* 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
@@ -584,8 +592,7 @@ uint16_t batadv_tt_local_remove(struct batadv_priv *bat_priv,
         /* if this client has been added right now, it is possible to
          * immediately purge it
          */
-        batadv_tt_local_event(bat_priv, tt_local_entry->common.addr,
-                              curr_flags | BATADV_TT_CLIENT_DEL);
+        batadv_tt_local_event(bat_priv, tt_local_entry, BATADV_TT_CLIENT_DEL);
         hlist_del_rcu(&tt_local_entry->common.hash_entry);
         batadv_tt_local_entry_free_ref(tt_local_entry);
 
@@ -791,10 +798,25 @@ out:
                 batadv_tt_orig_list_entry_free_ref(orig_entry);
 }
 
-/* caller must hold orig_node refcount */
+/**
+ * batadv_tt_global_add - add a new TT global entry or update an existing one
+ * @bat_priv: the bat priv with all the soft interface information
+ * @orig_node: the originator announcing the client
+ * @tt_addr: the mac address of the non-mesh client
+ * @flags: TT flags that have to be set for this non-mesh client
+ * @ttvn: the tt version number ever announcing this non-mesh client
+ *
+ * Add a new TT global entry for the given originator. If the entry already
+ * exists add a new reference to the given originator (a global entry can have
+ * references to multiple originators) and adjust the flags attribute to reflect
+ * the function argument.
+ * If a TT local entry exists for this non-mesh client remove it.
+ *
+ * The caller must hold orig_node refcount.
+ */
 int batadv_tt_global_add(struct batadv_priv *bat_priv,
                          struct batadv_orig_node *orig_node,
-                         const unsigned char *tt_addr, uint8_t flags,
+                         const unsigned char *tt_addr, uint16_t flags,
                          uint8_t ttvn)
 {
         struct batadv_tt_global_entry *tt_global_entry;
@@ -1600,11 +1622,11 @@ batadv_tt_response_fill_table(uint16_t tt_len, uint8_t ttvn,
         tt_tot = tt_len / sizeof(struct batadv_tt_change);
 
         len = tt_query_size + tt_len;
-        skb = dev_alloc_skb(len + ETH_HLEN + NET_IP_ALIGN);
+        skb = netdev_alloc_skb_ip_align(NULL, len + ETH_HLEN);
         if (!skb)
                 goto out;
 
-        skb_reserve(skb, ETH_HLEN + NET_IP_ALIGN);
+        skb_reserve(skb, ETH_HLEN);
         tt_response = (struct batadv_tt_query_packet *)skb_put(skb, len);
         tt_response->ttvn = ttvn;
 
@@ -1665,11 +1687,11 @@ static int batadv_send_tt_request(struct batadv_priv *bat_priv,
         if (!tt_req_node)
                 goto out;
 
-        skb = dev_alloc_skb(sizeof(*tt_request) + ETH_HLEN + NET_IP_ALIGN);
+        skb = netdev_alloc_skb_ip_align(NULL, sizeof(*tt_request) + ETH_HLEN);
         if (!skb)
                 goto out;
 
-        skb_reserve(skb, ETH_HLEN + NET_IP_ALIGN);
+        skb_reserve(skb, ETH_HLEN);
 
         tt_req_len = sizeof(*tt_request);
         tt_request = (struct batadv_tt_query_packet *)skb_put(skb, tt_req_len);
@@ -1691,7 +1713,7 @@ static int batadv_send_tt_request(struct batadv_priv *bat_priv,
 
         batadv_inc_counter(bat_priv, BATADV_CNT_TT_REQUEST_TX);
 
-        if (batadv_send_skb_to_orig(skb, dst_orig_node, NULL))
+        if (batadv_send_skb_to_orig(skb, dst_orig_node, NULL) != NET_XMIT_DROP)
                 ret = 0;
 
 out:
@@ -1715,7 +1737,7 @@ batadv_send_other_tt_response(struct batadv_priv *bat_priv,
         struct batadv_orig_node *req_dst_orig_node;
         struct batadv_orig_node *res_dst_orig_node = NULL;
         uint8_t orig_ttvn, req_ttvn, ttvn;
-        int ret = false;
+        int res, ret = false;
         unsigned char *tt_buff;
         bool full_table;
         uint16_t tt_len, tt_tot;
@@ -1762,11 +1784,11 @@ batadv_send_other_tt_response(struct batadv_priv *bat_priv,
                 tt_tot = tt_len / sizeof(struct batadv_tt_change);
 
                 len = sizeof(*tt_response) + tt_len;
-                skb = dev_alloc_skb(len + ETH_HLEN + NET_IP_ALIGN);
+                skb = netdev_alloc_skb_ip_align(NULL, len + ETH_HLEN);
                 if (!skb)
                         goto unlock;
 
-                skb_reserve(skb, ETH_HLEN + NET_IP_ALIGN);
+                skb_reserve(skb, ETH_HLEN);
                 packet_pos = skb_put(skb, len);
                 tt_response = (struct batadv_tt_query_packet *)packet_pos;
                 tt_response->ttvn = req_ttvn;
@@ -1810,8 +1832,10 @@ batadv_send_other_tt_response(struct batadv_priv *bat_priv,
 
         batadv_inc_counter(bat_priv, BATADV_CNT_TT_RESPONSE_TX);
 
-        if (batadv_send_skb_to_orig(skb, res_dst_orig_node, NULL))
+        res = batadv_send_skb_to_orig(skb, res_dst_orig_node, NULL);
+        if (res != NET_XMIT_DROP)
                 ret = true;
+
         goto out;
 
 unlock:
@@ -1878,11 +1902,11 @@ batadv_send_my_tt_response(struct batadv_priv *bat_priv,
                 tt_tot = tt_len / sizeof(struct batadv_tt_change);
 
                 len = sizeof(*tt_response) + tt_len;
-                skb = dev_alloc_skb(len + ETH_HLEN + NET_IP_ALIGN);
+                skb = netdev_alloc_skb_ip_align(NULL, len + ETH_HLEN);
                 if (!skb)
                         goto unlock;
 
-                skb_reserve(skb, ETH_HLEN + NET_IP_ALIGN);
+                skb_reserve(skb, ETH_HLEN);
                 packet_pos = skb_put(skb, len);
                 tt_response = (struct batadv_tt_query_packet *)packet_pos;
                 tt_response->ttvn = req_ttvn;
@@ -1925,7 +1949,7 @@ batadv_send_my_tt_response(struct batadv_priv *bat_priv,
 
         batadv_inc_counter(bat_priv, BATADV_CNT_TT_RESPONSE_TX);
 
-        if (batadv_send_skb_to_orig(skb, orig_node, NULL))
+        if (batadv_send_skb_to_orig(skb, orig_node, NULL) != NET_XMIT_DROP)
                 ret = true;
         goto out;
 
@@ -2212,11 +2236,11 @@ static void batadv_send_roam_adv(struct batadv_priv *bat_priv, uint8_t *client,
         if (!batadv_tt_check_roam_count(bat_priv, client))
                 goto out;
 
-        skb = dev_alloc_skb(sizeof(*roam_adv_packet) + ETH_HLEN + NET_IP_ALIGN);
+        skb = netdev_alloc_skb_ip_align(NULL, len + ETH_HLEN);
         if (!skb)
                 goto out;
 
-        skb_reserve(skb, ETH_HLEN + NET_IP_ALIGN);
+        skb_reserve(skb, ETH_HLEN);
 
         roam_adv_packet = (struct batadv_roam_adv_packet *)skb_put(skb, len);
 
@@ -2238,7 +2262,7 @@ static void batadv_send_roam_adv(struct batadv_priv *bat_priv, uint8_t *client,
 
         batadv_inc_counter(bat_priv, BATADV_CNT_TT_ROAM_ADV_TX);
 
-        if (batadv_send_skb_to_orig(skb, orig_node, NULL))
+        if (batadv_send_skb_to_orig(skb, orig_node, NULL) != NET_XMIT_DROP)
                 ret = 0;
 
 out:
diff --git a/net/batman-adv/translation-table.h b/net/batman-adv/translation-table.h
index ab8e683b402f..659a3bb759ce 100644
--- a/net/batman-adv/translation-table.h
+++ b/net/batman-adv/translation-table.h
@@ -33,7 +33,7 @@ void batadv_tt_global_add_orig(struct batadv_priv *bat_priv,
                                const unsigned char *tt_buff, int tt_buff_len);
 int batadv_tt_global_add(struct batadv_priv *bat_priv,
                          struct batadv_orig_node *orig_node,
-                         const unsigned char *addr, uint8_t flags,
+                         const unsigned char *addr, uint16_t flags,
                          uint8_t ttvn);
 int batadv_tt_global_seq_print_text(struct seq_file *seq, void *offset);
 void batadv_tt_global_del_orig(struct batadv_priv *bat_priv,
diff --git a/net/batman-adv/types.h b/net/batman-adv/types.h
index aba8364c3689..b2c94e139319 100644
--- a/net/batman-adv/types.h
+++ b/net/batman-adv/types.h
@@ -61,6 +61,7 @@ struct batadv_hard_iface_bat_iv {
  * @if_status: status of the interface for batman-adv
  * @net_dev: pointer to the net_device
  * @frag_seqno: last fragment sequence number sent by this interface
+ * @num_bcasts: number of payload re-broadcasts on this interface (ARQ)
  * @hardif_obj: kobject of the per interface sysfs "mesh" directory
  * @refcount: number of contexts the object is used
  * @batman_adv_ptype: packet type describing packets that should be processed by
@@ -76,6 +77,7 @@ struct batadv_hard_iface {
         char if_status;
         struct net_device *net_dev;
         atomic_t frag_seqno;
+        uint8_t num_bcasts;
         struct kobject *hardif_obj;
         atomic_t refcount;
         struct packet_type batman_adv_ptype;
@@ -640,7 +642,7 @@ struct batadv_socket_packet {
 #ifdef CONFIG_BATMAN_ADV_BLA
 struct batadv_bla_backbone_gw {
         uint8_t orig[ETH_ALEN];
-        short vid;
+        unsigned short vid;
         struct hlist_node hash_entry;
         struct batadv_priv *bat_priv;
         unsigned long lasttime;
@@ -663,7 +665,7 @@ struct batadv_bla_backbone_gw {
  */
 struct batadv_bla_claim {
         uint8_t addr[ETH_ALEN];
-        short vid;
+        unsigned short vid;
         struct batadv_bla_backbone_gw *backbone_gw;
         unsigned long lasttime;
         struct hlist_node hash_entry;
diff --git a/net/batman-adv/unicast.c b/net/batman-adv/unicast.c
index 0bb3b5982f94..dc8b5d4dd636 100644
--- a/net/batman-adv/unicast.c
+++ b/net/batman-adv/unicast.c
@@ -464,7 +464,7 @@ find_router:
                 goto out;
         }
 
-        if (batadv_send_skb_to_orig(skb, orig_node, NULL))
+        if (batadv_send_skb_to_orig(skb, orig_node, NULL) != NET_XMIT_DROP)
                 ret = 0;
 
 out:
diff --git a/net/batman-adv/vis.c b/net/batman-adv/vis.c
index 1625e5793a89..4983340f1943 100644
--- a/net/batman-adv/vis.c
+++ b/net/batman-adv/vis.c
@@ -392,12 +392,12 @@ batadv_add_packet(struct batadv_priv *bat_priv,
                 return NULL;
 
         len = sizeof(*packet) + vis_info_len;
-        info->skb_packet = dev_alloc_skb(len + ETH_HLEN + NET_IP_ALIGN);
+        info->skb_packet = netdev_alloc_skb_ip_align(NULL, len + ETH_HLEN);
         if (!info->skb_packet) {
                 kfree(info);
                 return NULL;
         }
-        skb_reserve(info->skb_packet, ETH_HLEN + NET_IP_ALIGN);
+        skb_reserve(info->skb_packet, ETH_HLEN);
         packet = (struct batadv_vis_packet *)skb_put(info->skb_packet, len);
 
         kref_init(&info->refcount);
@@ -697,7 +697,7 @@ static void batadv_broadcast_vis_packet(struct batadv_priv *bat_priv,
         struct batadv_orig_node *orig_node;
         struct batadv_vis_packet *packet;
         struct sk_buff *skb;
-        uint32_t i;
+        uint32_t i, res;
 
 
         packet = (struct batadv_vis_packet *)info->skb_packet->data;
@@ -724,7 +724,8 @@ static void batadv_broadcast_vis_packet(struct batadv_priv *bat_priv,
                         if (!skb)
                                 continue;
 
-                        if (!batadv_send_skb_to_orig(skb, orig_node, NULL))
+                        res = batadv_send_skb_to_orig(skb, orig_node, NULL);
+                        if (res == NET_XMIT_DROP)
                                 kfree_skb(skb);
                 }
                 rcu_read_unlock();
@@ -748,7 +749,7 @@ static void batadv_unicast_vis_packet(struct batadv_priv *bat_priv,
         if (!skb)
                 goto out;
 
-        if (!batadv_send_skb_to_orig(skb, orig_node, NULL))
+        if (batadv_send_skb_to_orig(skb, orig_node, NULL) == NET_XMIT_DROP)
                 kfree_skb(skb);
 
 out:
@@ -854,13 +855,13 @@ int batadv_vis_init(struct batadv_priv *bat_priv)
         if (!bat_priv->vis.my_info)
                 goto err;
 
-        len = sizeof(*packet) + BATADV_MAX_VIS_PACKET_SIZE;
-        len += ETH_HLEN + NET_IP_ALIGN;
-        bat_priv->vis.my_info->skb_packet = dev_alloc_skb(len);
+        len = sizeof(*packet) + BATADV_MAX_VIS_PACKET_SIZE + ETH_HLEN;
+        bat_priv->vis.my_info->skb_packet = netdev_alloc_skb_ip_align(NULL,
+                                                                      len);
         if (!bat_priv->vis.my_info->skb_packet)
                 goto free_info;
 
-        skb_reserve(bat_priv->vis.my_info->skb_packet, ETH_HLEN + NET_IP_ALIGN);
+        skb_reserve(bat_priv->vis.my_info->skb_packet, ETH_HLEN);
         tmp_skb = bat_priv->vis.my_info->skb_packet;
         packet = (struct batadv_vis_packet *)skb_put(tmp_skb, sizeof(*packet));
 
diff --git a/net/bluetooth/hci_core.c b/net/bluetooth/hci_core.c
index ace5e55fe5a3..e3a349977595 100644
--- a/net/bluetooth/hci_core.c
+++ b/net/bluetooth/hci_core.c
@@ -597,7 +597,15 @@ static void hci_init3_req(struct hci_request *req, unsigned long opt)
         struct hci_dev *hdev = req->hdev;
         u8 p;
 
-        /* Only send HCI_Delete_Stored_Link_Key if it is supported */
+        /* Some Broadcom based Bluetooth controllers do not support the
+         * Delete Stored Link Key command. They are clearly indicating its
+         * absence in the bit mask of supported commands.
+         *
+         * Check the supported commands and only if the the command is marked
+         * as supported send it. If not supported assume that the controller
+         * does not have actual support for stored link keys which makes this
+         * command redundant anyway.
+         */
         if (hdev->commands[6] & 0x80) {
                 struct hci_cp_delete_stored_link_key cp;
 
@@ -751,7 +759,7 @@ void hci_discovery_set_state(struct hci_dev *hdev, int state)
         hdev->discovery.state = state;
 }
 
-static void inquiry_cache_flush(struct hci_dev *hdev)
+void hci_inquiry_cache_flush(struct hci_dev *hdev)
 {
         struct discovery_state *cache = &hdev->discovery;
         struct inquiry_entry *p, *n;
@@ -964,7 +972,7 @@ int hci_inquiry(void __user *arg)
         hci_dev_lock(hdev);
         if (inquiry_cache_age(hdev) > INQUIRY_CACHE_AGE_MAX ||
             inquiry_cache_empty(hdev) || ir.flags & IREQ_CACHE_FLUSH) {
-                inquiry_cache_flush(hdev);
+                hci_inquiry_cache_flush(hdev);
                 do_inquiry = 1;
         }
         hci_dev_unlock(hdev);
@@ -1201,8 +1209,6 @@ static int hci_dev_do_close(struct hci_dev *hdev)
 {
         BT_DBG("%s %p", hdev->name, hdev);
 
-        cancel_work_sync(&hdev->le_scan);
-
         cancel_delayed_work(&hdev->power_off);
 
         hci_req_cancel(hdev, ENODEV);
@@ -1230,7 +1236,7 @@ static int hci_dev_do_close(struct hci_dev *hdev)
         cancel_delayed_work_sync(&hdev->le_scan_disable);
 
         hci_dev_lock(hdev);
-        inquiry_cache_flush(hdev);
+        hci_inquiry_cache_flush(hdev);
         hci_conn_hash_flush(hdev);
         hci_dev_unlock(hdev);
 
@@ -1331,7 +1337,7 @@ int hci_dev_reset(__u16 dev)
         skb_queue_purge(&hdev->cmd_q);
 
         hci_dev_lock(hdev);
-        inquiry_cache_flush(hdev);
+        hci_inquiry_cache_flush(hdev);
         hci_conn_hash_flush(hdev);
         hci_dev_unlock(hdev);
 
@@ -1991,80 +1997,59 @@ int hci_blacklist_del(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 type)
         return mgmt_device_unblocked(hdev, bdaddr, type);
 }
 
-static void le_scan_param_req(struct hci_request *req, unsigned long opt)
+static void inquiry_complete(struct hci_dev *hdev, u8 status)
 {
-        struct le_scan_params *param =  (struct le_scan_params *) opt;
-        struct hci_cp_le_set_scan_param cp;
-
-        memset(&cp, 0, sizeof(cp));
-        cp.type = param->type;
-        cp.interval = cpu_to_le16(param->interval);
-        cp.window = cpu_to_le16(param->window);
+        if (status) {
+                BT_ERR("Failed to start inquiry: status %d", status);
 
-        hci_req_add(req, HCI_OP_LE_SET_SCAN_PARAM, sizeof(cp), &cp);
-}
-
-static void le_scan_enable_req(struct hci_request *req, unsigned long opt)
-{
-        struct hci_cp_le_set_scan_enable cp;
-
-        memset(&cp, 0, sizeof(cp));
-        cp.enable = LE_SCAN_ENABLE;
-        cp.filter_dup = LE_SCAN_FILTER_DUP_ENABLE;
-
-        hci_req_add(req, HCI_OP_LE_SET_SCAN_ENABLE, sizeof(cp), &cp);
+                hci_dev_lock(hdev);
+                hci_discovery_set_state(hdev, DISCOVERY_STOPPED);
+                hci_dev_unlock(hdev);
+                return;
+        }
 }
 
-static int hci_do_le_scan(struct hci_dev *hdev, u8 type, u16 interval,
-                          u16 window, int timeout)
+static void le_scan_disable_work_complete(struct hci_dev *hdev, u8 status)
 {
-        long timeo = msecs_to_jiffies(3000);
-        struct le_scan_params param;
+        /* General inquiry access code (GIAC) */
+        u8 lap[3] = { 0x33, 0x8b, 0x9e };
+        struct hci_request req;
+        struct hci_cp_inquiry cp;
         int err;
 
-        BT_DBG("%s", hdev->name);
-
-        if (test_bit(HCI_LE_SCAN, &hdev->dev_flags))
-                return -EINPROGRESS;
-
-        param.type = type;
-        param.interval = interval;
-        param.window = window;
-
-        hci_req_lock(hdev);
-
-        err = __hci_req_sync(hdev, le_scan_param_req, (unsigned long) &param,
-                             timeo);
-        if (!err)
-                err = __hci_req_sync(hdev, le_scan_enable_req, 0, timeo);
-
-        hci_req_unlock(hdev);
+        if (status) {
+                BT_ERR("Failed to disable LE scanning: status %d", status);
+                return;
+        }
 
-        if (err < 0)
-                return err;
+        switch (hdev->discovery.type) {
+        case DISCOV_TYPE_LE:
+                hci_dev_lock(hdev);
+                hci_discovery_set_state(hdev, DISCOVERY_STOPPED);
+                hci_dev_unlock(hdev);
+                break;
 
-        queue_delayed_work(hdev->workqueue, &hdev->le_scan_disable,
-                           timeout);
+        case DISCOV_TYPE_INTERLEAVED:
+                hci_req_init(&req, hdev);
 
-        return 0;
-}
+                memset(&cp, 0, sizeof(cp));
+                memcpy(&cp.lap, lap, sizeof(cp.lap));
+                cp.length = DISCOV_INTERLEAVED_INQUIRY_LEN;
+                hci_req_add(&req, HCI_OP_INQUIRY, sizeof(cp), &cp);
 
-int hci_cancel_le_scan(struct hci_dev *hdev)
-{
-        BT_DBG("%s", hdev->name);
+                hci_dev_lock(hdev);
 
-        if (!test_bit(HCI_LE_SCAN, &hdev->dev_flags))
-                return -EALREADY;
+                hci_inquiry_cache_flush(hdev);
 
-        if (cancel_delayed_work(&hdev->le_scan_disable)) {
-                struct hci_cp_le_set_scan_enable cp;
+                err = hci_req_run(&req, inquiry_complete);
+                if (err) {
+                        BT_ERR("Inquiry request failed: err %d", err);
+                        hci_discovery_set_state(hdev, DISCOVERY_STOPPED);
+                }
 
-                /* Send HCI command to disable LE Scan */
-                memset(&cp, 0, sizeof(cp));
-                hci_send_cmd(hdev, HCI_OP_LE_SET_SCAN_ENABLE, sizeof(cp), &cp);
+                hci_dev_unlock(hdev);
+                break;
         }
-
-        return 0;
 }
 
 static void le_scan_disable_work(struct work_struct *work)
@@ -2072,46 +2057,20 @@ static void le_scan_disable_work(struct work_struct *work)
         struct hci_dev *hdev = container_of(work, struct hci_dev,
                                             le_scan_disable.work);
         struct hci_cp_le_set_scan_enable cp;
+        struct hci_request req;
+        int err;
 
         BT_DBG("%s", hdev->name);
 
-        memset(&cp, 0, sizeof(cp));
-
-        hci_send_cmd(hdev, HCI_OP_LE_SET_SCAN_ENABLE, sizeof(cp), &cp);
-}
-
-static void le_scan_work(struct work_struct *work)
-{
-        struct hci_dev *hdev = container_of(work, struct hci_dev, le_scan);
-        struct le_scan_params *param = &hdev->le_scan_params;
+        hci_req_init(&req, hdev);
 
-        BT_DBG("%s", hdev->name);
+        memset(&cp, 0, sizeof(cp));
+        cp.enable = LE_SCAN_DISABLE;
+        hci_req_add(&req, HCI_OP_LE_SET_SCAN_ENABLE, sizeof(cp), &cp);
 
-        hci_do_le_scan(hdev, param->type, param->interval, param->window,
-                       param->timeout);
-}
-
-int hci_le_scan(struct hci_dev *hdev, u8 type, u16 interval, u16 window,
-                int timeout)
-{
-        struct le_scan_params *param = &hdev->le_scan_params;
-
-        BT_DBG("%s", hdev->name);
-
-        if (test_bit(HCI_LE_PERIPHERAL, &hdev->dev_flags))
-                return -ENOTSUPP;
-
-        if (work_busy(&hdev->le_scan))
-                return -EINPROGRESS;
-
-        param->type = type;
-        param->interval = interval;
-        param->window = window;
-        param->timeout = timeout;
-
-        queue_work(system_long_wq, &hdev->le_scan);
-
-        return 0;
+        err = hci_req_run(&req, le_scan_disable_work_complete);
+        if (err)
+                BT_ERR("Disable LE scanning request failed: err %d", err);
 }
 
 /* Alloc HCI device */
@@ -2148,7 +2107,6 @@ struct hci_dev *hci_alloc_dev(void)
         INIT_WORK(&hdev->cmd_work, hci_cmd_work);
         INIT_WORK(&hdev->tx_work, hci_tx_work);
         INIT_WORK(&hdev->power_on, hci_power_on);
-        INIT_WORK(&hdev->le_scan, le_scan_work);
 
         INIT_DELAYED_WORK(&hdev->power_off, hci_power_off);
         INIT_DELAYED_WORK(&hdev->discov_off, hci_discov_off);
@@ -2211,16 +2169,15 @@ int hci_register_dev(struct hci_dev *hdev)
         list_add(&hdev->list, &hci_dev_list);
         write_unlock(&hci_dev_list_lock);
 
-        hdev->workqueue = alloc_workqueue(hdev->name, WQ_HIGHPRI | WQ_UNBOUND |
-                                          WQ_MEM_RECLAIM, 1);
+        hdev->workqueue = alloc_workqueue("%s", WQ_HIGHPRI | WQ_UNBOUND |
+                                          WQ_MEM_RECLAIM, 1, hdev->name);
         if (!hdev->workqueue) {
                 error = -ENOMEM;
                 goto err;
         }
 
-        hdev->req_workqueue = alloc_workqueue(hdev->name,
-                                              WQ_HIGHPRI | WQ_UNBOUND |
-                                              WQ_MEM_RECLAIM, 1);
+        hdev->req_workqueue = alloc_workqueue("%s", WQ_HIGHPRI | WQ_UNBOUND |
+                                              WQ_MEM_RECLAIM, 1, hdev->name);
         if (!hdev->req_workqueue) {
                 destroy_workqueue(hdev->workqueue);
                 error = -ENOMEM;
@@ -3551,36 +3508,6 @@ static void hci_cmd_work(struct work_struct *work)
         }
 }
 
-int hci_do_inquiry(struct hci_dev *hdev, u8 length)
-{
-        /* General inquiry access code (GIAC) */
-        u8 lap[3] = { 0x33, 0x8b, 0x9e };
-        struct hci_cp_inquiry cp;
-
-        BT_DBG("%s", hdev->name);
-
-        if (test_bit(HCI_INQUIRY, &hdev->flags))
-                return -EINPROGRESS;
-
-        inquiry_cache_flush(hdev);
-
-        memset(&cp, 0, sizeof(cp));
-        memcpy(&cp.lap, lap, sizeof(cp.lap));
-        cp.length  = length;
-
-        return hci_send_cmd(hdev, HCI_OP_INQUIRY, sizeof(cp), &cp);
-}
-
-int hci_cancel_inquiry(struct hci_dev *hdev)
-{
-        BT_DBG("%s", hdev->name);
-
-        if (!test_bit(HCI_INQUIRY, &hdev->flags))
-                return -EALREADY;
-
-        return hci_send_cmd(hdev, HCI_OP_INQUIRY_CANCEL, 0, NULL);
-}
-
 u8 bdaddr_to_le(u8 bdaddr_type)
 {
         switch (bdaddr_type) {
diff --git a/net/bluetooth/hci_event.c b/net/bluetooth/hci_event.c
index b93cd2eb5d58..0437200d92f4 100644
--- a/net/bluetooth/hci_event.c
+++ b/net/bluetooth/hci_event.c
@@ -40,21 +40,13 @@ static void hci_cc_inquiry_cancel(struct hci_dev *hdev, struct sk_buff *skb)
 
         BT_DBG("%s status 0x%2.2x", hdev->name, status);
 
-        if (status) {
-                hci_dev_lock(hdev);
-                mgmt_stop_discovery_failed(hdev, status);
-                hci_dev_unlock(hdev);
+        if (status)
                 return;
-        }
 
         clear_bit(HCI_INQUIRY, &hdev->flags);
         smp_mb__after_clear_bit(); /* wake_up_bit advises about this barrier */
         wake_up_bit(&hdev->flags, HCI_INQUIRY);
 
-        hci_dev_lock(hdev);
-        hci_discovery_set_state(hdev, DISCOVERY_STOPPED);
-        hci_dev_unlock(hdev);
-
         hci_conn_check_pending(hdev);
 }
 
@@ -937,20 +929,6 @@ static void hci_cc_le_set_adv_enable(struct hci_dev *hdev, struct sk_buff *skb)
         hci_dev_unlock(hdev);
 }
 
-static void hci_cc_le_set_scan_param(struct hci_dev *hdev, struct sk_buff *skb)
-{
-        __u8 status = *((__u8 *) skb->data);
-
-        BT_DBG("%s status 0x%2.2x", hdev->name, status);
-
-        if (status) {
-                hci_dev_lock(hdev);
-                mgmt_start_discovery_failed(hdev, status);
-                hci_dev_unlock(hdev);
-                return;
-        }
-}
-
 static void hci_cc_le_set_scan_enable(struct hci_dev *hdev,
                                       struct sk_buff *skb)
 {
@@ -963,41 +941,16 @@ static void hci_cc_le_set_scan_enable(struct hci_dev *hdev,
         if (!cp)
                 return;
 
+        if (status)
+                return;
+
         switch (cp->enable) {
         case LE_SCAN_ENABLE:
-                if (status) {
-                        hci_dev_lock(hdev);
-                        mgmt_start_discovery_failed(hdev, status);
-                        hci_dev_unlock(hdev);
-                        return;
-                }
-
                 set_bit(HCI_LE_SCAN, &hdev->dev_flags);
-
-                hci_dev_lock(hdev);
-                hci_discovery_set_state(hdev, DISCOVERY_FINDING);
-                hci_dev_unlock(hdev);
                 break;
 
         case LE_SCAN_DISABLE:
-                if (status) {
-                        hci_dev_lock(hdev);
-                        mgmt_stop_discovery_failed(hdev, status);
-                        hci_dev_unlock(hdev);
-                        return;
-                }
-
                 clear_bit(HCI_LE_SCAN, &hdev->dev_flags);
-
-                if (hdev->discovery.type == DISCOV_TYPE_INTERLEAVED &&
-                    hdev->discovery.state == DISCOVERY_FINDING) {
-                        mgmt_interleaved_discovery(hdev);
-                } else {
-                        hci_dev_lock(hdev);
-                        hci_discovery_set_state(hdev, DISCOVERY_STOPPED);
-                        hci_dev_unlock(hdev);
-                }
-
                 break;
 
         default:
@@ -1077,18 +1030,10 @@ static void hci_cs_inquiry(struct hci_dev *hdev, __u8 status)
 
         if (status) {
                 hci_conn_check_pending(hdev);
-                hci_dev_lock(hdev);
-                if (test_bit(HCI_MGMT, &hdev->dev_flags))
-                        mgmt_start_discovery_failed(hdev, status);
-                hci_dev_unlock(hdev);
                 return;
         }
 
         set_bit(HCI_INQUIRY, &hdev->flags);
-
-        hci_dev_lock(hdev);
-        hci_discovery_set_state(hdev, DISCOVERY_FINDING);
-        hci_dev_unlock(hdev);
 }
 
 static void hci_cs_create_conn(struct hci_dev *hdev, __u8 status)
@@ -2298,10 +2243,6 @@ static void hci_cmd_complete_evt(struct hci_dev *hdev, struct sk_buff *skb)
                 hci_cc_user_passkey_neg_reply(hdev, skb);
                 break;
 
-        case HCI_OP_LE_SET_SCAN_PARAM:
-                hci_cc_le_set_scan_param(hdev, skb);
-                break;
-
         case HCI_OP_LE_SET_ADV_ENABLE:
                 hci_cc_le_set_adv_enable(hdev, skb);
                 break;
@@ -2670,7 +2611,7 @@ static void hci_link_key_request_evt(struct hci_dev *hdev, struct sk_buff *skb)
 
         BT_DBG("%s", hdev->name);
 
-        if (!test_bit(HCI_LINK_KEYS, &hdev->dev_flags))
+        if (!test_bit(HCI_MGMT, &hdev->dev_flags))
                 return;
 
         hci_dev_lock(hdev);
@@ -2746,7 +2687,7 @@ static void hci_link_key_notify_evt(struct hci_dev *hdev, struct sk_buff *skb)
                 hci_conn_drop(conn);
         }
 
-        if (test_bit(HCI_LINK_KEYS, &hdev->dev_flags))
+        if (test_bit(HCI_MGMT, &hdev->dev_flags))
                 hci_add_link_key(hdev, conn, 1, &ev->bdaddr, ev->link_key,
                                  ev->key_type, pin_len);
 
diff --git a/net/bluetooth/hidp/core.c b/net/bluetooth/hidp/core.c
index 940f5acb6694..0c699cdc3696 100644
--- a/net/bluetooth/hidp/core.c
+++ b/net/bluetooth/hidp/core.c
@@ -76,25 +76,19 @@ static void hidp_copy_session(struct hidp_session *session, struct hidp_conninfo
         ci->flags = session->flags;
         ci->state = BT_CONNECTED;
 
-        ci->vendor  = 0x0000;
-        ci->product = 0x0000;
-        ci->version = 0x0000;
-
         if (session->input) {
                 ci->vendor  = session->input->id.vendor;
                 ci->product = session->input->id.product;
                 ci->version = session->input->id.version;
                 if (session->input->name)
-                        strncpy(ci->name, session->input->name, 128);
+                        strlcpy(ci->name, session->input->name, 128);
                 else
-                        strncpy(ci->name, "HID Boot Device", 128);
-        }
-
-        if (session->hid) {
+                        strlcpy(ci->name, "HID Boot Device", 128);
+        } else if (session->hid) {
                 ci->vendor  = session->hid->vendor;
                 ci->product = session->hid->product;
                 ci->version = session->hid->version;
-                strncpy(ci->name, session->hid->name, 128);
+                strlcpy(ci->name, session->hid->name, 128);
         }
 }
 
@@ -851,6 +845,29 @@ static void hidp_session_dev_del(struct hidp_session *session)
 }
 
 /*
+ * Asynchronous device registration
+ * HID device drivers might want to perform I/O during initialization to
+ * detect device types. Therefore, call device registration in a separate
+ * worker so the HIDP thread can schedule I/O operations.
+ * Note that this must be called after the worker thread was initialized
+ * successfully. This will then add the devices and increase session state
+ * on success, otherwise it will terminate the session thread.
+ */
+static void hidp_session_dev_work(struct work_struct *work)
+{
+        struct hidp_session *session = container_of(work,
+                                                    struct hidp_session,
+                                                    dev_init);
+        int ret;
+
+        ret = hidp_session_dev_add(session);
+        if (!ret)
+                atomic_inc(&session->state);
+        else
+                hidp_session_terminate(session);
+}
+
+/*
  * Create new session object
  * Allocate session object, initialize static fields, copy input data into the
  * object and take a reference to all sub-objects.
@@ -897,6 +914,7 @@ static int hidp_session_new(struct hidp_session **out, const bdaddr_t *bdaddr,
         session->idle_to = req->idle_to;
 
         /* device management */
+        INIT_WORK(&session->dev_init, hidp_session_dev_work);
         setup_timer(&session->timer, hidp_idle_timeout,
                     (unsigned long)session);
 
@@ -1035,8 +1053,8 @@ static void hidp_session_terminate(struct hidp_session *session)
  * Probe HIDP session
  * This is called from the l2cap_conn core when our l2cap_user object is bound
  * to the hci-connection. We get the session via the \user object and can now
- * start the session thread, register the HID/input devices and link it into
- * the global session list.
+ * start the session thread, link it into the global session list and
+ * schedule HID/input device registration.
  * The global session-list owns its own reference to the session object so you
  * can drop your own reference after registering the l2cap_user object.
  */
@@ -1058,21 +1076,30 @@ static int hidp_session_probe(struct l2cap_conn *conn,
                 goto out_unlock;
         }
 
+        if (session->input) {
+                ret = hidp_session_dev_add(session);
+                if (ret)
+                        goto out_unlock;
+        }
+
         ret = hidp_session_start_sync(session);
         if (ret)
-                goto out_unlock;
+                goto out_del;
 
-        ret = hidp_session_dev_add(session);
-        if (ret)
-                goto out_stop;
+        /* HID device registration is async to allow I/O during probe */
+        if (session->input)
+                atomic_inc(&session->state);
+        else
+                schedule_work(&session->dev_init);
 
         hidp_session_get(session);
         list_add(&session->list, &hidp_session_list);
         ret = 0;
         goto out_unlock;
 
-out_stop:
-        hidp_session_terminate(session);
+out_del:
+        if (session->input)
+                hidp_session_dev_del(session);
 out_unlock:
         up_write(&hidp_session_sem);
         return ret;
@@ -1102,7 +1129,12 @@ static void hidp_session_remove(struct l2cap_conn *conn,
         down_write(&hidp_session_sem);
 
         hidp_session_terminate(session);
-        hidp_session_dev_del(session);
+
+        cancel_work_sync(&session->dev_init);
+        if (session->input ||
+            atomic_read(&session->state) > HIDP_SESSION_PREPARING)
+                hidp_session_dev_del(session);
+
         list_del(&session->list);
 
         up_write(&hidp_session_sem);
diff --git a/net/bluetooth/hidp/hidp.h b/net/bluetooth/hidp/hidp.h
index 6162ce8606ac..9e6cc3553105 100644
--- a/net/bluetooth/hidp/hidp.h
+++ b/net/bluetooth/hidp/hidp.h
@@ -128,6 +128,7 @@ int hidp_get_conninfo(struct hidp_conninfo *ci);
 
 enum hidp_session_state {
         HIDP_SESSION_IDLING,
+        HIDP_SESSION_PREPARING,
         HIDP_SESSION_RUNNING,
 };
 
@@ -156,6 +157,7 @@ struct hidp_session {
         unsigned long idle_to;
 
         /* device management */
+        struct work_struct dev_init;
         struct input_dev *input;
         struct hid_device *hid;
         struct timer_list timer;
diff --git a/net/bluetooth/l2cap_core.c b/net/bluetooth/l2cap_core.c
index 68843a28a7af..8c3499bec893 100644
--- a/net/bluetooth/l2cap_core.c
+++ b/net/bluetooth/l2cap_core.c
@@ -504,8 +504,10 @@ void __l2cap_chan_add(struct l2cap_conn *conn, struct l2cap_chan *chan)
                 if (conn->hcon->type == LE_LINK) {
                         /* LE connection */
                         chan->omtu = L2CAP_DEFAULT_MTU;
-                        chan->scid = L2CAP_CID_LE_DATA;
-                        chan->dcid = L2CAP_CID_LE_DATA;
+                        if (chan->dcid == L2CAP_CID_ATT)
+                                chan->scid = L2CAP_CID_ATT;
+                        else
+                                chan->scid = l2cap_alloc_cid(conn);
                 } else {
                         /* Alloc CID for connection-oriented socket */
                         chan->scid = l2cap_alloc_cid(conn);
@@ -543,6 +545,8 @@ void __l2cap_chan_add(struct l2cap_conn *conn, struct l2cap_chan *chan)
 
         l2cap_chan_hold(chan);
 
+        hci_conn_hold(conn->hcon);
+
         list_add(&chan->list, &conn->chan_l);
 }
 
@@ -1338,17 +1342,21 @@ static struct l2cap_chan *l2cap_global_chan_by_scid(int state, u16 cid,
 
 static void l2cap_le_conn_ready(struct l2cap_conn *conn)
 {
-        struct sock *parent, *sk;
+        struct sock *parent;
         struct l2cap_chan *chan, *pchan;
 
         BT_DBG("");
 
         /* Check if we have socket listening on cid */
-        pchan = l2cap_global_chan_by_scid(BT_LISTEN, L2CAP_CID_LE_DATA,
+        pchan = l2cap_global_chan_by_scid(BT_LISTEN, L2CAP_CID_ATT,
                                           conn->src, conn->dst);
         if (!pchan)
                 return;
 
+        /* Client ATT sockets should override the server one */
+        if (__l2cap_get_chan_by_dcid(conn, L2CAP_CID_ATT))
+                return;
+
         parent = pchan->sk;
 
         lock_sock(parent);
@@ -1357,17 +1365,12 @@ static void l2cap_le_conn_ready(struct l2cap_conn *conn)
         if (!chan)
                 goto clean;
 
-        sk = chan->sk;
-
-        hci_conn_hold(conn->hcon);
-        conn->hcon->disc_timeout = HCI_DISCONN_TIMEOUT;
-
-        bacpy(&bt_sk(sk)->src, conn->src);
-        bacpy(&bt_sk(sk)->dst, conn->dst);
+        chan->dcid = L2CAP_CID_ATT;
 
-        l2cap_chan_add(conn, chan);
+        bacpy(&bt_sk(chan->sk)->src, conn->src);
+        bacpy(&bt_sk(chan->sk)->dst, conn->dst);
 
-        l2cap_chan_ready(chan);
+        __l2cap_chan_add(conn, chan);
 
 clean:
         release_sock(parent);
@@ -1380,14 +1383,17 @@ static void l2cap_conn_ready(struct l2cap_conn *conn)
 
         BT_DBG("conn %p", conn);
 
-        if (!hcon->out && hcon->type == LE_LINK)
-                l2cap_le_conn_ready(conn);
-
+        /* For outgoing pairing which doesn't necessarily have an
+         * associated socket (e.g. mgmt_pair_device).
+         */
         if (hcon->out && hcon->type == LE_LINK)
                 smp_conn_security(hcon, hcon->pending_sec_level);
 
         mutex_lock(&conn->chan_lock);
 
+        if (hcon->type == LE_LINK)
+                l2cap_le_conn_ready(conn);
+
         list_for_each_entry(chan, &conn->chan_l, list) {
 
                 l2cap_chan_lock(chan);
@@ -1792,7 +1798,7 @@ int l2cap_chan_connect(struct l2cap_chan *chan, __le16 psm, u16 cid,
 
         auth_type = l2cap_get_auth_type(chan);
 
-        if (chan->dcid == L2CAP_CID_LE_DATA)
+        if (bdaddr_type_is_le(dst_type))
                 hcon = hci_connect(hdev, LE_LINK, dst, dst_type,
                                    chan->sec_level, auth_type);
         else
@@ -1811,16 +1817,10 @@ int l2cap_chan_connect(struct l2cap_chan *chan, __le16 psm, u16 cid,
                 goto done;
         }
 
-        if (hcon->type == LE_LINK) {
-                err = 0;
-
-                if (!list_empty(&conn->chan_l)) {
-                        err = -EBUSY;
-                        hci_conn_drop(hcon);
-                }
-
-                if (err)
-                        goto done;
+        if (cid && __l2cap_get_chan_by_dcid(conn, cid)) {
+                hci_conn_drop(hcon);
+                err = -EBUSY;
+                goto done;
         }
 
         /* Update source addr of the socket */
@@ -1830,6 +1830,9 @@ int l2cap_chan_connect(struct l2cap_chan *chan, __le16 psm, u16 cid,
         l2cap_chan_add(conn, chan);
         l2cap_chan_lock(chan);
 
+        /* l2cap_chan_add takes its own ref so we can drop this one */
+        hci_conn_drop(hcon);
+
         l2cap_state_change(chan, BT_CONNECT);
         __set_chan_timer(chan, sk->sk_sndtimeo);
 
@@ -3751,8 +3754,6 @@ static struct l2cap_chan *l2cap_connect(struct l2cap_conn *conn,
 
         sk = chan->sk;
 
-        hci_conn_hold(conn->hcon);
-
         bacpy(&bt_sk(sk)->src, conn->src);
         bacpy(&bt_sk(sk)->dst, conn->dst);
         chan->psm  = psm;
@@ -5292,6 +5293,51 @@ static inline int l2cap_le_sig_cmd(struct l2cap_conn *conn,
         }
 }
 
+static inline void l2cap_le_sig_channel(struct l2cap_conn *conn,
+                                        struct sk_buff *skb)
+{
+        u8 *data = skb->data;
+        int len = skb->len;
+        struct l2cap_cmd_hdr cmd;
+        int err;
+
+        l2cap_raw_recv(conn, skb);
+
+        while (len >= L2CAP_CMD_HDR_SIZE) {
+                u16 cmd_len;
+                memcpy(&cmd, data, L2CAP_CMD_HDR_SIZE);
+                data += L2CAP_CMD_HDR_SIZE;
+                len  -= L2CAP_CMD_HDR_SIZE;
+
+                cmd_len = le16_to_cpu(cmd.len);
+
+                BT_DBG("code 0x%2.2x len %d id 0x%2.2x", cmd.code, cmd_len,
+                       cmd.ident);
+
+                if (cmd_len > len || !cmd.ident) {
+                        BT_DBG("corrupted command");
+                        break;
+                }
+
+                err = l2cap_le_sig_cmd(conn, &cmd, data);
+                if (err) {
+                        struct l2cap_cmd_rej_unk rej;
+
+                        BT_ERR("Wrong link type (%d)", err);
+
+                        /* FIXME: Map err to a valid reason */
+                        rej.reason = __constant_cpu_to_le16(L2CAP_REJ_NOT_UNDERSTOOD);
+                        l2cap_send_cmd(conn, cmd.ident, L2CAP_COMMAND_REJ,
+                                       sizeof(rej), &rej);
+                }
+
+                data += cmd_len;
+                len  -= cmd_len;
+        }
+
+        kfree_skb(skb);
+}
+
 static inline void l2cap_sig_channel(struct l2cap_conn *conn,
                                      struct sk_buff *skb)
 {
@@ -5318,11 +5364,7 @@ static inline void l2cap_sig_channel(struct l2cap_conn *conn,
                         break;
                 }
 
-                if (conn->hcon->type == LE_LINK)
-                        err = l2cap_le_sig_cmd(conn, &cmd, data);
-                else
-                        err = l2cap_bredr_sig_cmd(conn, &cmd, cmd_len, data);
-
+                err = l2cap_bredr_sig_cmd(conn, &cmd, cmd_len, data);
                 if (err) {
                         struct l2cap_cmd_rej_unk rej;
 
@@ -6356,16 +6398,13 @@ static void l2cap_att_channel(struct l2cap_conn *conn,
 {
         struct l2cap_chan *chan;
 
-        chan = l2cap_global_chan_by_scid(0, L2CAP_CID_LE_DATA,
+        chan = l2cap_global_chan_by_scid(BT_CONNECTED, L2CAP_CID_ATT,
                                          conn->src, conn->dst);
         if (!chan)
                 goto drop;
 
         BT_DBG("chan %p, len %d", chan, skb->len);
 
-        if (chan->state != BT_BOUND && chan->state != BT_CONNECTED)
-                goto drop;
-
         if (chan->imtu < skb->len)
                 goto drop;
 
@@ -6395,6 +6434,8 @@ static void l2cap_recv_frame(struct l2cap_conn *conn, struct sk_buff *skb)
 
         switch (cid) {
         case L2CAP_CID_LE_SIGNALING:
+                l2cap_le_sig_channel(conn, skb);
+                break;
         case L2CAP_CID_SIGNALING:
                 l2cap_sig_channel(conn, skb);
                 break;
@@ -6405,7 +6446,7 @@ static void l2cap_recv_frame(struct l2cap_conn *conn, struct sk_buff *skb)
                 l2cap_conless_channel(conn, psm, skb);
                 break;
 
-        case L2CAP_CID_LE_DATA:
+        case L2CAP_CID_ATT:
                 l2cap_att_channel(conn, skb);
                 break;
 
@@ -6531,7 +6572,7 @@ int l2cap_security_cfm(struct hci_conn *hcon, u8 status, u8 encrypt)
                         continue;
                 }
 
-                if (chan->scid == L2CAP_CID_LE_DATA) {
+                if (chan->scid == L2CAP_CID_ATT) {
                         if (!status && encrypt) {
                                 chan->sec_level = hcon->sec_level;
                                 l2cap_chan_ready(chan);
diff --git a/net/bluetooth/l2cap_sock.c b/net/bluetooth/l2cap_sock.c
index 36fed40c162c..0098af80b213 100644
--- a/net/bluetooth/l2cap_sock.c
+++ b/net/bluetooth/l2cap_sock.c
@@ -466,7 +466,7 @@ static int l2cap_sock_getsockopt(struct socket *sock, int level, int optname,
 static bool l2cap_valid_mtu(struct l2cap_chan *chan, u16 mtu)
 {
         switch (chan->scid) {
-        case L2CAP_CID_LE_DATA:
+        case L2CAP_CID_ATT:
                 if (mtu < L2CAP_LE_MIN_MTU)
                         return false;
                 break;
@@ -630,7 +630,7 @@ static int l2cap_sock_setsockopt(struct socket *sock, int level, int optname,
                 conn = chan->conn;
 
                 /*change security for LE channels */
-                if (chan->scid == L2CAP_CID_LE_DATA) {
+                if (chan->scid == L2CAP_CID_ATT) {
                         if (!conn->hcon->out) {
                                 err = -EINVAL;
                                 break;
diff --git a/net/bluetooth/mgmt.c b/net/bluetooth/mgmt.c
index f8ecbc70293d..fedc5399d465 100644
--- a/net/bluetooth/mgmt.c
+++ b/net/bluetooth/mgmt.c
@@ -102,18 +102,6 @@ static const u16 mgmt_events[] = {
         MGMT_EV_PASSKEY_NOTIFY,
 };
 
-/*
- * These LE scan and inquiry parameters were chosen according to LE General
- * Discovery Procedure specification.
- */
-#define LE_SCAN_WIN                     0x12
-#define LE_SCAN_INT                     0x12
-#define LE_SCAN_TIMEOUT_LE_ONLY         msecs_to_jiffies(10240)
-#define LE_SCAN_TIMEOUT_BREDR_LE        msecs_to_jiffies(5120)
-
-#define INQUIRY_LEN_BREDR               0x08    /* TGAP(100) */
-#define INQUIRY_LEN_BREDR_LE            0x04    /* TGAP(100)/2 */
-
 #define CACHE_TIMEOUT   msecs_to_jiffies(2 * 1000)
 
 #define hdev_is_powered(hdev) (test_bit(HCI_UP, &hdev->flags) && \
@@ -1748,8 +1736,6 @@ static int load_link_keys(struct sock *sk, struct hci_dev *hdev, void *data,
 
         hci_link_keys_clear(hdev);
 
-        set_bit(HCI_LINK_KEYS, &hdev->dev_flags);
-
         if (cp->debug_keys)
                 set_bit(HCI_DEBUG_KEYS, &hdev->dev_flags);
         else
@@ -2633,28 +2619,72 @@ static int remove_remote_oob_data(struct sock *sk, struct hci_dev *hdev,
         return err;
 }
 
-int mgmt_interleaved_discovery(struct hci_dev *hdev)
+static int mgmt_start_discovery_failed(struct hci_dev *hdev, u8 status)
 {
+        struct pending_cmd *cmd;
+        u8 type;
         int err;
 
-        BT_DBG("%s", hdev->name);
+        hci_discovery_set_state(hdev, DISCOVERY_STOPPED);
 
-        hci_dev_lock(hdev);
+        cmd = mgmt_pending_find(MGMT_OP_START_DISCOVERY, hdev);
+        if (!cmd)
+                return -ENOENT;
 
-        err = hci_do_inquiry(hdev, INQUIRY_LEN_BREDR_LE);
-        if (err < 0)
-                hci_discovery_set_state(hdev, DISCOVERY_STOPPED);
+        type = hdev->discovery.type;
 
-        hci_dev_unlock(hdev);
+        err = cmd_complete(cmd->sk, hdev->id, cmd->opcode, mgmt_status(status),
+                           &type, sizeof(type));
+        mgmt_pending_remove(cmd);
 
         return err;
 }
 
+static void start_discovery_complete(struct hci_dev *hdev, u8 status)
+{
+        BT_DBG("status %d", status);
+
+        if (status) {
+                hci_dev_lock(hdev);
+                mgmt_start_discovery_failed(hdev, status);
+                hci_dev_unlock(hdev);
+                return;
+        }
+
+        hci_dev_lock(hdev);
+        hci_discovery_set_state(hdev, DISCOVERY_FINDING);
+        hci_dev_unlock(hdev);
+
+        switch (hdev->discovery.type) {
+        case DISCOV_TYPE_LE:
+                queue_delayed_work(hdev->workqueue, &hdev->le_scan_disable,
+                                   DISCOV_LE_TIMEOUT);
+                break;
+
+        case DISCOV_TYPE_INTERLEAVED:
+                queue_delayed_work(hdev->workqueue, &hdev->le_scan_disable,
+                                   DISCOV_INTERLEAVED_TIMEOUT);
+                break;
+
+        case DISCOV_TYPE_BREDR:
+                break;
+
+        default:
+                BT_ERR("Invalid discovery type %d", hdev->discovery.type);
+        }
+}
+
 static int start_discovery(struct sock *sk, struct hci_dev *hdev,
                            void *data, u16 len)
 {
         struct mgmt_cp_start_discovery *cp = data;
         struct pending_cmd *cmd;
+        struct hci_cp_le_set_scan_param param_cp;
+        struct hci_cp_le_set_scan_enable enable_cp;
+        struct hci_cp_inquiry inq_cp;
+        struct hci_request req;
+        /* General inquiry access code (GIAC) */
+        u8 lap[3] = { 0x33, 0x8b, 0x9e };
         int err;
 
         BT_DBG("%s", hdev->name);
@@ -2687,6 +2717,8 @@ static int start_discovery(struct sock *sk, struct hci_dev *hdev,
 
         hdev->discovery.type = cp->type;
 
+        hci_req_init(&req, hdev);
+
         switch (hdev->discovery.type) {
         case DISCOV_TYPE_BREDR:
                 if (!lmp_bredr_capable(hdev)) {
@@ -2696,10 +2728,23 @@ static int start_discovery(struct sock *sk, struct hci_dev *hdev,
                         goto failed;
                 }
 
-                err = hci_do_inquiry(hdev, INQUIRY_LEN_BREDR);
+                if (test_bit(HCI_INQUIRY, &hdev->flags)) {
+                        err = cmd_status(sk, hdev->id, MGMT_OP_START_DISCOVERY,
+                                         MGMT_STATUS_BUSY);
+                        mgmt_pending_remove(cmd);
+                        goto failed;
+                }
+
+                hci_inquiry_cache_flush(hdev);
+
+                memset(&inq_cp, 0, sizeof(inq_cp));
+                memcpy(&inq_cp.lap, lap, sizeof(inq_cp.lap));
+                inq_cp.length = DISCOV_BREDR_INQUIRY_LEN;
+                hci_req_add(&req, HCI_OP_INQUIRY, sizeof(inq_cp), &inq_cp);
                 break;
 
         case DISCOV_TYPE_LE:
+        case DISCOV_TYPE_INTERLEAVED:
                 if (!test_bit(HCI_LE_ENABLED, &hdev->dev_flags)) {
                         err = cmd_status(sk, hdev->id, MGMT_OP_START_DISCOVERY,
                                          MGMT_STATUS_NOT_SUPPORTED);
@@ -2707,20 +2752,40 @@ static int start_discovery(struct sock *sk, struct hci_dev *hdev,
                         goto failed;
                 }
 
-                err = hci_le_scan(hdev, LE_SCAN_ACTIVE, LE_SCAN_INT,
-                                  LE_SCAN_WIN, LE_SCAN_TIMEOUT_LE_ONLY);
-                break;
-
-        case DISCOV_TYPE_INTERLEAVED:
-                if (!lmp_host_le_capable(hdev) || !lmp_bredr_capable(hdev)) {
+                if (hdev->discovery.type == DISCOV_TYPE_INTERLEAVED &&
+                    !lmp_bredr_capable(hdev)) {
                         err = cmd_status(sk, hdev->id, MGMT_OP_START_DISCOVERY,
                                          MGMT_STATUS_NOT_SUPPORTED);
                         mgmt_pending_remove(cmd);
                         goto failed;
                 }
 
-                err = hci_le_scan(hdev, LE_SCAN_ACTIVE, LE_SCAN_INT,
-                                  LE_SCAN_WIN, LE_SCAN_TIMEOUT_BREDR_LE);
+                if (test_bit(HCI_LE_PERIPHERAL, &hdev->dev_flags)) {
+                        err = cmd_status(sk, hdev->id, MGMT_OP_START_DISCOVERY,
+                                         MGMT_STATUS_REJECTED);
+                        mgmt_pending_remove(cmd);
+                        goto failed;
+                }
+
+                if (test_bit(HCI_LE_SCAN, &hdev->dev_flags)) {
+                        err = cmd_status(sk, hdev->id, MGMT_OP_START_DISCOVERY,
+                                         MGMT_STATUS_BUSY);
+                        mgmt_pending_remove(cmd);
+                        goto failed;
+                }
+
+                memset(&param_cp, 0, sizeof(param_cp));
+                param_cp.type = LE_SCAN_ACTIVE;
+                param_cp.interval = cpu_to_le16(DISCOV_LE_SCAN_INT);
+                param_cp.window = cpu_to_le16(DISCOV_LE_SCAN_WIN);
+                hci_req_add(&req, HCI_OP_LE_SET_SCAN_PARAM, sizeof(param_cp),
+                            &param_cp);
+
+                memset(&enable_cp, 0, sizeof(enable_cp));
+                enable_cp.enable = LE_SCAN_ENABLE;
+                enable_cp.filter_dup = LE_SCAN_FILTER_DUP_ENABLE;
+                hci_req_add(&req, HCI_OP_LE_SET_SCAN_ENABLE, sizeof(enable_cp),
+                            &enable_cp);
                 break;
 
         default:
@@ -2730,6 +2795,7 @@ static int start_discovery(struct sock *sk, struct hci_dev *hdev,
                 goto failed;
         }
 
+        err = hci_req_run(&req, start_discovery_complete);
         if (err < 0)
                 mgmt_pending_remove(cmd);
         else
@@ -2740,6 +2806,39 @@ failed:
         return err;
 }
 
+static int mgmt_stop_discovery_failed(struct hci_dev *hdev, u8 status)
+{
+        struct pending_cmd *cmd;
+        int err;
+
+        cmd = mgmt_pending_find(MGMT_OP_STOP_DISCOVERY, hdev);
+        if (!cmd)
+                return -ENOENT;
+
+        err = cmd_complete(cmd->sk, hdev->id, cmd->opcode, mgmt_status(status),
+                           &hdev->discovery.type, sizeof(hdev->discovery.type));
+        mgmt_pending_remove(cmd);
+
+        return err;
+}
+
+static void stop_discovery_complete(struct hci_dev *hdev, u8 status)
+{
+        BT_DBG("status %d", status);
+
+        hci_dev_lock(hdev);
+
+        if (status) {
+                mgmt_stop_discovery_failed(hdev, status);
+                goto unlock;
+        }
+
+        hci_discovery_set_state(hdev, DISCOVERY_STOPPED);
+
+unlock:
+        hci_dev_unlock(hdev);
+}
+
 static int stop_discovery(struct sock *sk, struct hci_dev *hdev, void *data,
                           u16 len)
 {
@@ -2747,6 +2846,8 @@ static int stop_discovery(struct sock *sk, struct hci_dev *hdev, void *data,
         struct pending_cmd *cmd;
         struct hci_cp_remote_name_req_cancel cp;
         struct inquiry_entry *e;
+        struct hci_request req;
+        struct hci_cp_le_set_scan_enable enable_cp;
         int err;
 
         BT_DBG("%s", hdev->name);
@@ -2773,12 +2874,20 @@ static int stop_discovery(struct sock *sk, struct hci_dev *hdev, void *data,
                 goto unlock;
         }
 
+        hci_req_init(&req, hdev);
+
         switch (hdev->discovery.state) {
         case DISCOVERY_FINDING:
-                if (test_bit(HCI_INQUIRY, &hdev->flags))
-                        err = hci_cancel_inquiry(hdev);
-                else
-                        err = hci_cancel_le_scan(hdev);
+                if (test_bit(HCI_INQUIRY, &hdev->flags)) {
+                        hci_req_add(&req, HCI_OP_INQUIRY_CANCEL, 0, NULL);
+                } else {
+                        cancel_delayed_work(&hdev->le_scan_disable);
+
+                        memset(&enable_cp, 0, sizeof(enable_cp));
+                        enable_cp.enable = LE_SCAN_DISABLE;
+                        hci_req_add(&req, HCI_OP_LE_SET_SCAN_ENABLE,
+                                    sizeof(enable_cp), &enable_cp);
+                }
 
                 break;
 
@@ -2796,16 +2905,22 @@ static int stop_discovery(struct sock *sk, struct hci_dev *hdev, void *data,
                 }
 
                 bacpy(&cp.bdaddr, &e->data.bdaddr);
-                err = hci_send_cmd(hdev, HCI_OP_REMOTE_NAME_REQ_CANCEL,
-                                   sizeof(cp), &cp);
+                hci_req_add(&req, HCI_OP_REMOTE_NAME_REQ_CANCEL, sizeof(cp),
+                            &cp);
 
                 break;
 
         default:
                 BT_DBG("unknown discovery state %u", hdev->discovery.state);
-                err = -EFAULT;
+
+                mgmt_pending_remove(cmd);
+                err = cmd_complete(sk, hdev->id, MGMT_OP_STOP_DISCOVERY,
+                                   MGMT_STATUS_FAILED, &mgmt_cp->type,
+                                   sizeof(mgmt_cp->type));
+                goto unlock;
         }
 
+        err = hci_req_run(&req, stop_discovery_complete);
         if (err < 0)
                 mgmt_pending_remove(cmd);
         else
@@ -4063,6 +4178,9 @@ int mgmt_device_found(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
         struct mgmt_ev_device_found *ev = (void *) buf;
         size_t ev_size;
 
+        if (!hci_discovery_active(hdev))
+                return -EPERM;
+
         /* Leave 5 bytes for a potential CoD field */
         if (sizeof(*ev) + eir_len + 5 > sizeof(buf))
                 return -EINVAL;
@@ -4114,43 +4232,6 @@ int mgmt_remote_name(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
                           sizeof(*ev) + eir_len, NULL);
 }
 
-int mgmt_start_discovery_failed(struct hci_dev *hdev, u8 status)
-{
-        struct pending_cmd *cmd;
-        u8 type;
-        int err;
-
-        hci_discovery_set_state(hdev, DISCOVERY_STOPPED);
-
-        cmd = mgmt_pending_find(MGMT_OP_START_DISCOVERY, hdev);
-        if (!cmd)
-                return -ENOENT;
-
-        type = hdev->discovery.type;
-
-        err = cmd_complete(cmd->sk, hdev->id, cmd->opcode, mgmt_status(status),
-                           &type, sizeof(type));
-        mgmt_pending_remove(cmd);
-
-        return err;
-}
-
-int mgmt_stop_discovery_failed(struct hci_dev *hdev, u8 status)
-{
-        struct pending_cmd *cmd;
-        int err;
-
-        cmd = mgmt_pending_find(MGMT_OP_STOP_DISCOVERY, hdev);
-        if (!cmd)
-                return -ENOENT;
-
-        err = cmd_complete(cmd->sk, hdev->id, cmd->opcode, mgmt_status(status),
-                           &hdev->discovery.type, sizeof(hdev->discovery.type));
-        mgmt_pending_remove(cmd);
-
-        return err;
-}
-
 int mgmt_discovering(struct hci_dev *hdev, u8 discovering)
 {
         struct mgmt_ev_discovering ev;
diff --git a/net/bridge/br_device.c b/net/bridge/br_device.c
index 967312803e41..2ef66781fedb 100644
--- a/net/bridge/br_device.c
+++ b/net/bridge/br_device.c
@@ -22,6 +22,9 @@
 #include <asm/uaccess.h>
 #include "br_private.h"
 
+#define COMMON_FEATURES (NETIF_F_SG | NETIF_F_FRAGLIST | NETIF_F_HIGHDMA | \
+                         NETIF_F_GSO_MASK | NETIF_F_HW_CSUM)
+
 /* net device transmit always called with BH disabled */
 netdev_tx_t br_dev_xmit(struct sk_buff *skb, struct net_device *dev)
 {
@@ -55,10 +58,10 @@ netdev_tx_t br_dev_xmit(struct sk_buff *skb, struct net_device *dev)
         skb_pull(skb, ETH_HLEN);
 
         if (is_broadcast_ether_addr(dest))
-                br_flood_deliver(br, skb);
+                br_flood_deliver(br, skb, false);
         else if (is_multicast_ether_addr(dest)) {
                 if (unlikely(netpoll_tx_running(dev))) {
-                        br_flood_deliver(br, skb);
+                        br_flood_deliver(br, skb, false);
                         goto out;
                 }
                 if (br_multicast_rcv(br, NULL, skb)) {
@@ -70,11 +73,11 @@ netdev_tx_t br_dev_xmit(struct sk_buff *skb, struct net_device *dev)
                 if (mdst || BR_INPUT_SKB_CB_MROUTERS_ONLY(skb))
                         br_multicast_deliver(mdst, skb);
                 else
-                        br_flood_deliver(br, skb);
+                        br_flood_deliver(br, skb, false);
         } else if ((dst = __br_fdb_get(br, dest, vid)) != NULL)
                 br_deliver(dst->dst, skb);
         else
-                br_flood_deliver(br, skb);
+                br_flood_deliver(br, skb, true);
 
 out:
         rcu_read_unlock();
@@ -346,12 +349,10 @@ void br_dev_setup(struct net_device *dev)
         dev->tx_queue_len = 0;
         dev->priv_flags = IFF_EBRIDGE;
 
-        dev->features = NETIF_F_SG | NETIF_F_FRAGLIST | NETIF_F_HIGHDMA |
-                        NETIF_F_GSO_MASK | NETIF_F_HW_CSUM | NETIF_F_LLTX |
-                        NETIF_F_NETNS_LOCAL | NETIF_F_HW_VLAN_CTAG_TX;
-        dev->hw_features = NETIF_F_SG | NETIF_F_FRAGLIST | NETIF_F_HIGHDMA |
-                           NETIF_F_GSO_MASK | NETIF_F_HW_CSUM |
-                           NETIF_F_HW_VLAN_CTAG_TX;
+        dev->features = COMMON_FEATURES | NETIF_F_LLTX | NETIF_F_NETNS_LOCAL |
+                        NETIF_F_HW_VLAN_CTAG_TX;
+        dev->hw_features = COMMON_FEATURES | NETIF_F_HW_VLAN_CTAG_TX;
+        dev->vlan_features = COMMON_FEATURES;
 
         br->dev = dev;
         spin_lock_init(&br->lock);
diff --git a/net/bridge/br_fdb.c b/net/bridge/br_fdb.c
index ebfa4443c69b..60aca9109a50 100644
--- a/net/bridge/br_fdb.c
+++ b/net/bridge/br_fdb.c
@@ -707,6 +707,11 @@ int br_fdb_add(struct ndmsg *ndm, struct nlattr *tb[],
                 }
         }
 
+        if (is_zero_ether_addr(addr)) {
+                pr_info("bridge: RTM_NEWNEIGH with invalid ether address\n");
+                return -EINVAL;
+        }
+
         p = br_port_get_rtnl(dev);
         if (p == NULL) {
                 pr_info("bridge: RTM_NEWNEIGH %s not a bridge port\n",
diff --git a/net/bridge/br_forward.c b/net/bridge/br_forward.c
index 092b20e4ee4c..4b81b1471789 100644
--- a/net/bridge/br_forward.c
+++ b/net/bridge/br_forward.c
@@ -174,7 +174,8 @@ out:
 static void br_flood(struct net_bridge *br, struct sk_buff *skb,
                      struct sk_buff *skb0,
                      void (*__packet_hook)(const struct net_bridge_port *p,
-                                           struct sk_buff *skb))
+                                           struct sk_buff *skb),
+                     bool unicast)
 {
         struct net_bridge_port *p;
         struct net_bridge_port *prev;
@@ -182,6 +183,9 @@ static void br_flood(struct net_bridge *br, struct sk_buff *skb,
         prev = NULL;
 
         list_for_each_entry_rcu(p, &br->port_list, list) {
+                /* Do not flood unicast traffic to ports that turn it off */
+                if (unicast && !(p->flags & BR_FLOOD))
+                        continue;
                 prev = maybe_deliver(prev, p, skb, __packet_hook);
                 if (IS_ERR(prev))
                         goto out;
@@ -203,16 +207,16 @@ out:
 
 
 /* called with rcu_read_lock */
-void br_flood_deliver(struct net_bridge *br, struct sk_buff *skb)
+void br_flood_deliver(struct net_bridge *br, struct sk_buff *skb, bool unicast)
 {
-        br_flood(br, skb, NULL, __br_deliver);
+        br_flood(br, skb, NULL, __br_deliver, unicast);
 }
 
 /* called under bridge lock */
 void br_flood_forward(struct net_bridge *br, struct sk_buff *skb,
-                      struct sk_buff *skb2)
+                      struct sk_buff *skb2, bool unicast)
 {
-        br_flood(br, skb, skb2, __br_forward);
+        br_flood(br, skb, skb2, __br_forward, unicast);
 }
 
 #ifdef CONFIG_BRIDGE_IGMP_SNOOPING
diff --git a/net/bridge/br_if.c b/net/bridge/br_if.c
index 4cdba60926ff..5623be6b9ecd 100644
--- a/net/bridge/br_if.c
+++ b/net/bridge/br_if.c
@@ -221,7 +221,7 @@ static struct net_bridge_port *new_nbp(struct net_bridge *br,
         p->path_cost = port_cost(dev);
         p->priority = 0x8000 >> BR_PORT_BITS;
         p->port_no = index;
-        p->flags = 0;
+        p->flags = BR_LEARNING | BR_FLOOD;
         br_init_port(p);
         p->state = BR_STATE_DISABLED;
         br_stp_port_timer_init(p);
diff --git a/net/bridge/br_input.c b/net/bridge/br_input.c
index 828e2bcc1f52..1b8b8b824cd7 100644
--- a/net/bridge/br_input.c
+++ b/net/bridge/br_input.c
@@ -65,6 +65,7 @@ int br_handle_frame_finish(struct sk_buff *skb)
         struct net_bridge_fdb_entry *dst;
         struct net_bridge_mdb_entry *mdst;
         struct sk_buff *skb2;
+        bool unicast = true;
         u16 vid = 0;
 
         if (!p || p->state == BR_STATE_DISABLED)
@@ -75,7 +76,8 @@ int br_handle_frame_finish(struct sk_buff *skb)
 
         /* insert into forwarding database after filtering to avoid spoofing */
         br = p->br;
-        br_fdb_update(br, p, eth_hdr(skb)->h_source, vid);
+        if (p->flags & BR_LEARNING)
+                br_fdb_update(br, p, eth_hdr(skb)->h_source, vid);
 
         if (!is_broadcast_ether_addr(dest) && is_multicast_ether_addr(dest) &&
             br_multicast_rcv(br, p, skb))
@@ -94,9 +96,10 @@ int br_handle_frame_finish(struct sk_buff *skb)
 
         dst = NULL;
 
-        if (is_broadcast_ether_addr(dest))
+        if (is_broadcast_ether_addr(dest)) {
                 skb2 = skb;
-        else if (is_multicast_ether_addr(dest)) {
+                unicast = false;
+        } else if (is_multicast_ether_addr(dest)) {
                 mdst = br_mdb_get(br, skb, vid);
                 if (mdst || BR_INPUT_SKB_CB_MROUTERS_ONLY(skb)) {
                         if ((mdst && mdst->mglist) ||
@@ -109,6 +112,7 @@ int br_handle_frame_finish(struct sk_buff *skb)
                 } else
                         skb2 = skb;
 
+                unicast = false;
                 br->dev->stats.multicast++;
         } else if ((dst = __br_fdb_get(br, dest, vid)) &&
                         dst->is_local) {
@@ -122,7 +126,7 @@ int br_handle_frame_finish(struct sk_buff *skb)
                         dst->used = jiffies;
                         br_forward(dst->dst, skb, skb2);
                 } else
-                        br_flood_forward(br, skb, skb2);
+                        br_flood_forward(br, skb, skb2, unicast);
         }
 
         if (skb2)
@@ -142,7 +146,8 @@ static int br_handle_local_finish(struct sk_buff *skb)
         u16 vid = 0;
 
         br_vlan_get_tag(skb, &vid);
-        br_fdb_update(p->br, p, eth_hdr(skb)->h_source, vid);
+        if (p->flags & BR_LEARNING)
+                br_fdb_update(p->br, p, eth_hdr(skb)->h_source, vid);
         return 0;        /* process further */
 }
 
diff --git a/net/bridge/br_mdb.c b/net/bridge/br_mdb.c
index 19942e38fd2d..0daae3ec2355 100644
--- a/net/bridge/br_mdb.c
+++ b/net/bridge/br_mdb.c
@@ -447,7 +447,7 @@ static int __br_mdb_del(struct net_bridge *br, struct br_mdb_entry *entry)
                 call_rcu_bh(&p->rcu, br_multicast_free_pg);
                 err = 0;
 
-                if (!mp->ports && !mp->mglist &&
+                if (!mp->ports && !mp->mglist && mp->timer_armed &&
                     netif_running(br->dev))
                         mod_timer(&mp->timer, jiffies);
                 break;
diff --git a/net/bridge/br_multicast.c b/net/bridge/br_multicast.c
index d6448e35e027..69af490cce44 100644
--- a/net/bridge/br_multicast.c
+++ b/net/bridge/br_multicast.c
@@ -23,6 +23,7 @@
 #include <linux/skbuff.h>
 #include <linux/slab.h>
 #include <linux/timer.h>
+#include <linux/inetdevice.h>
 #include <net/ip.h>
 #if IS_ENABLED(CONFIG_IPV6)
 #include <net/ipv6.h>
@@ -269,7 +270,7 @@ static void br_multicast_del_pg(struct net_bridge *br,
                 del_timer(&p->timer);
                 call_rcu_bh(&p->rcu, br_multicast_free_pg);
 
-                if (!mp->ports && !mp->mglist &&
+                if (!mp->ports && !mp->mglist && mp->timer_armed &&
                     netif_running(br->dev))
                         mod_timer(&mp->timer, jiffies);
 
@@ -381,7 +382,8 @@ static struct sk_buff *br_ip4_multicast_alloc_query(struct net_bridge *br,
         iph->frag_off = htons(IP_DF);
         iph->ttl = 1;
         iph->protocol = IPPROTO_IGMP;
-        iph->saddr = 0;
+        iph->saddr = br->multicast_query_use_ifaddr ?
+                     inet_select_addr(br->dev, 0, RT_SCOPE_LINK) : 0;
         iph->daddr = htonl(INADDR_ALLHOSTS_GROUP);
         ((u8 *)&iph[1])[0] = IPOPT_RA;
         ((u8 *)&iph[1])[1] = 4;
@@ -616,8 +618,6 @@ rehash:
 
         mp->br = br;
         mp->addr = *group;
-        setup_timer(&mp->timer, br_multicast_group_expired,
-                    (unsigned long)mp);
 
         hlist_add_head_rcu(&mp->hlist[mdb->ver], &mdb->mhash[hash]);
         mdb->size++;
@@ -655,7 +655,6 @@ static int br_multicast_add_group(struct net_bridge *br,
         struct net_bridge_mdb_entry *mp;
         struct net_bridge_port_group *p;
         struct net_bridge_port_group __rcu **pp;
-        unsigned long now = jiffies;
         int err;
 
         spin_lock(&br->multicast_lock);
@@ -670,7 +669,6 @@ static int br_multicast_add_group(struct net_bridge *br,
 
         if (!port) {
                 mp->mglist = true;
-                mod_timer(&mp->timer, now + br->multicast_membership_interval);
                 goto out;
         }
 
@@ -678,7 +676,7 @@ static int br_multicast_add_group(struct net_bridge *br,
              (p = mlock_dereference(*pp, br)) != NULL;
              pp = &p->next) {
                 if (p->port == port)
-                        goto found;
+                        goto out;
                 if ((unsigned long)p->port < (unsigned long)port)
                         break;
         }
@@ -689,8 +687,6 @@ static int br_multicast_add_group(struct net_bridge *br,
         rcu_assign_pointer(*pp, p);
         br_mdb_notify(br->dev, port, group, RTM_NEWMDB);
 
-found:
-        mod_timer(&p->timer, now + br->multicast_membership_interval);
 out:
         err = 0;
 
@@ -1016,7 +1012,7 @@ static int br_ip6_multicast_mld2_report(struct net_bridge *br,
 #endif
 
 /*
- * Add port to rotuer_list
+ * Add port to router_list
  *  list is maintained ordered by pointer value
  *  and locked by br->multicast_lock and RCU
  */
@@ -1130,6 +1126,10 @@ static int br_ip4_multicast_query(struct net_bridge *br,
         if (!mp)
                 goto out;
 
+        setup_timer(&mp->timer, br_multicast_group_expired, (unsigned long)mp);
+        mod_timer(&mp->timer, now + br->multicast_membership_interval);
+        mp->timer_armed = true;
+
         max_delay *= br->multicast_last_member_count;
 
         if (mp->mglist &&
@@ -1204,6 +1204,10 @@ static int br_ip6_multicast_query(struct net_bridge *br,
         if (!mp)
                 goto out;
 
+        setup_timer(&mp->timer, br_multicast_group_expired, (unsigned long)mp);
+        mod_timer(&mp->timer, now + br->multicast_membership_interval);
+        mp->timer_armed = true;
+
         max_delay *= br->multicast_last_member_count;
         if (mp->mglist &&
             (timer_pending(&mp->timer) ?
@@ -1247,6 +1251,32 @@ static void br_multicast_leave_group(struct net_bridge *br,
         if (!mp)
                 goto out;
 
+        if (br->multicast_querier &&
+            !timer_pending(&br->multicast_querier_timer)) {
+                __br_multicast_send_query(br, port, &mp->addr);
+
+                time = jiffies + br->multicast_last_member_count *
+                                 br->multicast_last_member_interval;
+                mod_timer(port ? &port->multicast_query_timer :
+                                 &br->multicast_query_timer, time);
+
+                for (p = mlock_dereference(mp->ports, br);
+                     p != NULL;
+                     p = mlock_dereference(p->next, br)) {
+                        if (p->port != port)
+                                continue;
+
+                        if (!hlist_unhashed(&p->mglist) &&
+                            (timer_pending(&p->timer) ?
+                             time_after(p->timer.expires, time) :
+                             try_to_del_timer_sync(&p->timer) >= 0)) {
+                                mod_timer(&p->timer, time);
+                        }
+
+                        break;
+                }
+        }
+
         if (port && (port->flags & BR_MULTICAST_FAST_LEAVE)) {
                 struct net_bridge_port_group __rcu **pp;
 
@@ -1262,7 +1292,7 @@ static void br_multicast_leave_group(struct net_bridge *br,
                         call_rcu_bh(&p->rcu, br_multicast_free_pg);
                         br_mdb_notify(br->dev, port, group, RTM_DELMDB);
 
-                        if (!mp->ports && !mp->mglist &&
+                        if (!mp->ports && !mp->mglist && mp->timer_armed &&
                             netif_running(br->dev))
                                 mod_timer(&mp->timer, jiffies);
                 }
@@ -1274,30 +1304,12 @@ static void br_multicast_leave_group(struct net_bridge *br,
                      br->multicast_last_member_interval;
 
         if (!port) {
-                if (mp->mglist &&
+                if (mp->mglist && mp->timer_armed &&
                     (timer_pending(&mp->timer) ?
                      time_after(mp->timer.expires, time) :
                      try_to_del_timer_sync(&mp->timer) >= 0)) {
                         mod_timer(&mp->timer, time);
                 }
-
-                goto out;
-        }
-
-        for (p = mlock_dereference(mp->ports, br);
-             p != NULL;
-             p = mlock_dereference(p->next, br)) {
-                if (p->port != port)
-                        continue;
-
-                if (!hlist_unhashed(&p->mglist) &&
-                    (timer_pending(&p->timer) ?
-                     time_after(p->timer.expires, time) :
-                     try_to_del_timer_sync(&p->timer) >= 0)) {
-                        mod_timer(&p->timer, time);
-                }
-
-                break;
         }
 
 out:
@@ -1619,6 +1631,7 @@ void br_multicast_init(struct net_bridge *br)
 
         br->multicast_router = 1;
         br->multicast_querier = 0;
+        br->multicast_query_use_ifaddr = 0;
         br->multicast_last_member_count = 2;
         br->multicast_startup_query_count = 2;
 
@@ -1672,6 +1685,7 @@ void br_multicast_stop(struct net_bridge *br)
                 hlist_for_each_entry_safe(mp, n, &mdb->mhash[i],
                                           hlist[ver]) {
                         del_timer(&mp->timer);
+                        mp->timer_armed = false;
                         call_rcu_bh(&mp->rcu, br_multicast_free_group);
                 }
         }
diff --git a/net/bridge/br_netfilter.c b/net/bridge/br_netfilter.c
index 1ed75bfd8d1d..f87736270eaa 100644
--- a/net/bridge/br_netfilter.c
+++ b/net/bridge/br_netfilter.c
@@ -992,7 +992,7 @@ static struct nf_hook_ops br_nf_ops[] __read_mostly = {
 
 #ifdef CONFIG_SYSCTL
 static
-int brnf_sysctl_call_tables(ctl_table * ctl, int write,
+int brnf_sysctl_call_tables(struct ctl_table *ctl, int write,
                             void __user * buffer, size_t * lenp, loff_t * ppos)
 {
         int ret;
@@ -1004,7 +1004,7 @@ int brnf_sysctl_call_tables(ctl_table * ctl, int write,
         return ret;
 }
 
-static ctl_table brnf_table[] = {
+static struct ctl_table brnf_table[] = {
         {
                 .procname       = "bridge-nf-call-arptables",
                 .data           = &brnf_call_arptables,
diff --git a/net/bridge/br_netlink.c b/net/bridge/br_netlink.c
index 8e3abf564798..1fc30abd3a52 100644
--- a/net/bridge/br_netlink.c
+++ b/net/bridge/br_netlink.c
@@ -30,6 +30,8 @@ static inline size_t br_port_info_size(void)
                 + nla_total_size(1)     /* IFLA_BRPORT_GUARD */
                 + nla_total_size(1)     /* IFLA_BRPORT_PROTECT */
                 + nla_total_size(1)     /* IFLA_BRPORT_FAST_LEAVE */
+                + nla_total_size(1)     /* IFLA_BRPORT_LEARNING */
+                + nla_total_size(1)     /* IFLA_BRPORT_UNICAST_FLOOD */
                 + 0;
 }
 
@@ -56,7 +58,9 @@ static int br_port_fill_attrs(struct sk_buff *skb,
             nla_put_u8(skb, IFLA_BRPORT_MODE, mode) ||
             nla_put_u8(skb, IFLA_BRPORT_GUARD, !!(p->flags & BR_BPDU_GUARD)) ||
             nla_put_u8(skb, IFLA_BRPORT_PROTECT, !!(p->flags & BR_ROOT_BLOCK)) ||
-            nla_put_u8(skb, IFLA_BRPORT_FAST_LEAVE, !!(p->flags & BR_MULTICAST_FAST_LEAVE)))
+            nla_put_u8(skb, IFLA_BRPORT_FAST_LEAVE, !!(p->flags & BR_MULTICAST_FAST_LEAVE)) ||
+            nla_put_u8(skb, IFLA_BRPORT_LEARNING, !!(p->flags & BR_LEARNING)) ||
+            nla_put_u8(skb, IFLA_BRPORT_UNICAST_FLOOD, !!(p->flags & BR_FLOOD)))
                 return -EMSGSIZE;
 
         return 0;
@@ -281,6 +285,8 @@ static const struct nla_policy ifla_brport_policy[IFLA_BRPORT_MAX + 1] = {
         [IFLA_BRPORT_MODE]      = { .type = NLA_U8 },
         [IFLA_BRPORT_GUARD]     = { .type = NLA_U8 },
         [IFLA_BRPORT_PROTECT]   = { .type = NLA_U8 },
+        [IFLA_BRPORT_LEARNING]  = { .type = NLA_U8 },
+        [IFLA_BRPORT_UNICAST_FLOOD] = { .type = NLA_U8 },
 };
 
 /* Change the state of the port and notify spanning tree */
@@ -328,6 +334,8 @@ static int br_setport(struct net_bridge_port *p, struct nlattr *tb[])
         br_set_port_flag(p, tb, IFLA_BRPORT_GUARD, BR_BPDU_GUARD);
         br_set_port_flag(p, tb, IFLA_BRPORT_FAST_LEAVE, BR_MULTICAST_FAST_LEAVE);
         br_set_port_flag(p, tb, IFLA_BRPORT_PROTECT, BR_ROOT_BLOCK);
+        br_set_port_flag(p, tb, IFLA_BRPORT_LEARNING, BR_LEARNING);
+        br_set_port_flag(p, tb, IFLA_BRPORT_UNICAST_FLOOD, BR_FLOOD);
 
         if (tb[IFLA_BRPORT_COST]) {
                 err = br_stp_set_path_cost(p, nla_get_u32(tb[IFLA_BRPORT_COST]));
diff --git a/net/bridge/br_notify.c b/net/bridge/br_notify.c
index 1644b3e1f947..3a3f371b2841 100644
--- a/net/bridge/br_notify.c
+++ b/net/bridge/br_notify.c
@@ -31,7 +31,7 @@ struct notifier_block br_device_notifier = {
  */
 static int br_device_event(struct notifier_block *unused, unsigned long event, void *ptr)
 {
-        struct net_device *dev = ptr;
+        struct net_device *dev = netdev_notifier_info_to_dev(ptr);
         struct net_bridge_port *p;
         struct net_bridge *br;
         bool changed_addr;
diff --git a/net/bridge/br_private.h b/net/bridge/br_private.h
index d2c043a857b6..3be89b3ce17b 100644
--- a/net/bridge/br_private.h
+++ b/net/bridge/br_private.h
@@ -112,6 +112,7 @@ struct net_bridge_mdb_entry
         struct timer_list               timer;
         struct br_ip                    addr;
         bool                            mglist;
+        bool                            timer_armed;
 };
 
 struct net_bridge_mdb_htable
@@ -157,6 +158,8 @@ struct net_bridge_port
 #define BR_ROOT_BLOCK           0x00000004
 #define BR_MULTICAST_FAST_LEAVE 0x00000008
 #define BR_ADMIN_COST           0x00000010
+#define BR_LEARNING             0x00000020
+#define BR_FLOOD                0x00000040
 
 #ifdef CONFIG_BRIDGE_IGMP_SNOOPING
         u32                             multicast_startup_queries_sent;
@@ -249,6 +252,7 @@ struct net_bridge
 
         u8                              multicast_disabled:1;
         u8                              multicast_querier:1;
+        u8                              multicast_query_use_ifaddr:1;
 
         u32                             hash_elasticity;
         u32                             hash_max;
@@ -411,9 +415,10 @@ extern int br_dev_queue_push_xmit(struct sk_buff *skb);
 extern void br_forward(const struct net_bridge_port *to,
                 struct sk_buff *skb, struct sk_buff *skb0);
 extern int br_forward_finish(struct sk_buff *skb);
-extern void br_flood_deliver(struct net_bridge *br, struct sk_buff *skb);
+extern void br_flood_deliver(struct net_bridge *br, struct sk_buff *skb,
+                             bool unicast);
 extern void br_flood_forward(struct net_bridge *br, struct sk_buff *skb,
-                             struct sk_buff *skb2);
+                             struct sk_buff *skb2, bool unicast);
 
 /* br_if.c */
 extern void br_port_carrier_check(struct net_bridge_port *p);
diff --git a/net/bridge/br_sysfs_br.c b/net/bridge/br_sysfs_br.c
index 8baa9c08e1a4..394bb96b6087 100644
--- a/net/bridge/br_sysfs_br.c
+++ b/net/bridge/br_sysfs_br.c
@@ -375,6 +375,31 @@ static ssize_t store_multicast_snooping(struct device *d,
 static DEVICE_ATTR(multicast_snooping, S_IRUGO | S_IWUSR,
                    show_multicast_snooping, store_multicast_snooping);
 
+static ssize_t show_multicast_query_use_ifaddr(struct device *d,
+                                      struct device_attribute *attr,
+                                      char *buf)
+{
+        struct net_bridge *br = to_bridge(d);
+        return sprintf(buf, "%d\n", br->multicast_query_use_ifaddr);
+}
+
+static int set_query_use_ifaddr(struct net_bridge *br, unsigned long val)
+{
+        br->multicast_query_use_ifaddr = !!val;
+        return 0;
+}
+
+static ssize_t
+store_multicast_query_use_ifaddr(struct device *d,
+                                 struct device_attribute *attr,
+                                 const char *buf, size_t len)
+{
+        return store_bridge_parm(d, buf, len, set_query_use_ifaddr);
+}
+static DEVICE_ATTR(multicast_query_use_ifaddr, S_IRUGO | S_IWUSR,
+                   show_multicast_query_use_ifaddr,
+                   store_multicast_query_use_ifaddr);
+
 static ssize_t show_multicast_querier(struct device *d,
                                       struct device_attribute *attr,
                                       char *buf)
@@ -734,6 +759,7 @@ static struct attribute *bridge_attrs[] = {
         &dev_attr_multicast_router.attr,
         &dev_attr_multicast_snooping.attr,
         &dev_attr_multicast_querier.attr,
+        &dev_attr_multicast_query_use_ifaddr.attr,
         &dev_attr_hash_elasticity.attr,
         &dev_attr_hash_max.attr,
         &dev_attr_multicast_last_member_count.attr,
diff --git a/net/bridge/br_sysfs_if.c b/net/bridge/br_sysfs_if.c
index a1ef1b6e14dc..2a2cdb756d51 100644
--- a/net/bridge/br_sysfs_if.c
+++ b/net/bridge/br_sysfs_if.c
@@ -158,6 +158,8 @@ static BRPORT_ATTR(flush, S_IWUSR, NULL, store_flush);
 BRPORT_ATTR_FLAG(hairpin_mode, BR_HAIRPIN_MODE);
 BRPORT_ATTR_FLAG(bpdu_guard, BR_BPDU_GUARD);
 BRPORT_ATTR_FLAG(root_block, BR_ROOT_BLOCK);
+BRPORT_ATTR_FLAG(learning, BR_LEARNING);
+BRPORT_ATTR_FLAG(unicast_flood, BR_FLOOD);
 
 #ifdef CONFIG_BRIDGE_IGMP_SNOOPING
 static ssize_t show_multicast_router(struct net_bridge_port *p, char *buf)
@@ -195,6 +197,8 @@ static const struct brport_attribute *brport_attrs[] = {
         &brport_attr_hairpin_mode,
         &brport_attr_bpdu_guard,
         &brport_attr_root_block,
+        &brport_attr_learning,
+        &brport_attr_unicast_flood,
 #ifdef CONFIG_BRIDGE_IGMP_SNOOPING
         &brport_attr_multicast_router,
         &brport_attr_multicast_fast_leave,
diff --git a/net/bridge/netfilter/ebt_ulog.c b/net/bridge/netfilter/ebt_ulog.c
index df0364aa12d5..518093802d1d 100644
--- a/net/bridge/netfilter/ebt_ulog.c
+++ b/net/bridge/netfilter/ebt_ulog.c
@@ -271,6 +271,12 @@ static int ebt_ulog_tg_check(const struct xt_tgchk_param *par)
 {
         struct ebt_ulog_info *uloginfo = par->targinfo;
 
+        if (!par->net->xt.ebt_ulog_warn_deprecated) {
+                pr_info("ebt_ulog is deprecated and it will be removed soon, "
+                        "use ebt_nflog instead\n");
+                par->net->xt.ebt_ulog_warn_deprecated = true;
+        }
+
         if (uloginfo->nlgroup > 31)
                 return -EINVAL;
 
diff --git a/net/bridge/netfilter/ebtables.c b/net/bridge/netfilter/ebtables.c
index 3d110c4fc787..ac7802428384 100644
--- a/net/bridge/netfilter/ebtables.c
+++ b/net/bridge/netfilter/ebtables.c
@@ -1339,7 +1339,7 @@ static inline int ebt_make_matchname(const struct ebt_entry_match *m,
 
         /* ebtables expects 32 bytes long names but xt_match names are 29 bytes
            long. Copy 29 bytes and fill remaining bytes with zeroes. */
-        strncpy(name, m->u.match->name, sizeof(name));
+        strlcpy(name, m->u.match->name, sizeof(name));
         if (copy_to_user(hlp, name, EBT_FUNCTION_MAXNAMELEN))
                 return -EFAULT;
         return 0;
@@ -1351,7 +1351,7 @@ static inline int ebt_make_watchername(const struct ebt_entry_watcher *w,
         char __user *hlp = ubase + ((char *)w - base);
         char name[EBT_FUNCTION_MAXNAMELEN] = {};
 
-        strncpy(name, w->u.watcher->name, sizeof(name));
+        strlcpy(name, w->u.watcher->name, sizeof(name));
         if (copy_to_user(hlp , name, EBT_FUNCTION_MAXNAMELEN))
                 return -EFAULT;
         return 0;
@@ -1377,7 +1377,7 @@ ebt_make_names(struct ebt_entry *e, const char *base, char __user *ubase)
         ret = EBT_WATCHER_ITERATE(e, ebt_make_watchername, base, ubase);
         if (ret != 0)
                 return ret;
-        strncpy(name, t->u.target->name, sizeof(name));
+        strlcpy(name, t->u.target->name, sizeof(name));
         if (copy_to_user(hlp, name, EBT_FUNCTION_MAXNAMELEN))
                 return -EFAULT;
         return 0;
diff --git a/net/caif/caif_dev.c b/net/caif/caif_dev.c
index 1f9ece1a9c34..4dca159435cf 100644
--- a/net/caif/caif_dev.c
+++ b/net/caif/caif_dev.c
@@ -352,9 +352,9 @@ EXPORT_SYMBOL(caif_enroll_dev);
 
 /* notify Caif of device events */
 static int caif_device_notify(struct notifier_block *me, unsigned long what,
-                              void *arg)
+                              void *ptr)
 {
-        struct net_device *dev = arg;
+        struct net_device *dev = netdev_notifier_info_to_dev(ptr);
         struct caif_device_entry *caifd = NULL;
         struct caif_dev_common *caifdev;
         struct cfcnfg *cfg;
diff --git a/net/caif/caif_usb.c b/net/caif/caif_usb.c
index 942e00a425fd..75ed04b78fa4 100644
--- a/net/caif/caif_usb.c
+++ b/net/caif/caif_usb.c
@@ -121,9 +121,9 @@ static struct packet_type caif_usb_type __read_mostly = {
 };
 
 static int cfusbl_device_notify(struct notifier_block *me, unsigned long what,
-                                void *arg)
+                                void *ptr)
 {
-        struct net_device *dev = arg;
+        struct net_device *dev = netdev_notifier_info_to_dev(ptr);
         struct caif_dev_common common;
         struct cflayer *layer, *link_support;
         struct usbnet *usbnet;
diff --git a/net/can/af_can.c b/net/can/af_can.c
index c4e50852c9f4..3ab8dd2e1282 100644
--- a/net/can/af_can.c
+++ b/net/can/af_can.c
@@ -794,9 +794,9 @@ EXPORT_SYMBOL(can_proto_unregister);
  * af_can notifier to create/remove CAN netdevice specific structs
  */
 static int can_notifier(struct notifier_block *nb, unsigned long msg,
-                        void *data)
+                        void *ptr)
 {
-        struct net_device *dev = (struct net_device *)data;
+        struct net_device *dev = netdev_notifier_info_to_dev(ptr);
         struct dev_rcv_lists *d;
 
         if (!net_eq(dev_net(dev), &init_net))
diff --git a/net/can/bcm.c b/net/can/bcm.c
index 8f113e6ff327..46f20bfafc0e 100644
--- a/net/can/bcm.c
+++ b/net/can/bcm.c
@@ -1350,9 +1350,9 @@ static int bcm_sendmsg(struct kiocb *iocb, struct socket *sock,
  * notification handler for netdevice status changes
  */
 static int bcm_notifier(struct notifier_block *nb, unsigned long msg,
-                        void *data)
+                        void *ptr)
 {
-        struct net_device *dev = (struct net_device *)data;
+        struct net_device *dev = netdev_notifier_info_to_dev(ptr);
         struct bcm_sock *bo = container_of(nb, struct bcm_sock, notifier);
         struct sock *sk = &bo->sk;
         struct bcm_op *op;
diff --git a/net/can/gw.c b/net/can/gw.c
index 3ee690e8c7d3..2f291f961a17 100644
--- a/net/can/gw.c
+++ b/net/can/gw.c
@@ -445,9 +445,9 @@ static inline void cgw_unregister_filter(struct cgw_job *gwj)
 }
 
 static int cgw_notifier(struct notifier_block *nb,
-                        unsigned long msg, void *data)
+                        unsigned long msg, void *ptr)
 {
-        struct net_device *dev = (struct net_device *)data;
+        struct net_device *dev = netdev_notifier_info_to_dev(ptr);
 
         if (!net_eq(dev_net(dev), &init_net))
                 return NOTIFY_DONE;
diff --git a/net/can/raw.c b/net/can/raw.c
index 1085e65f848e..641e1c895123 100644
--- a/net/can/raw.c
+++ b/net/can/raw.c
@@ -239,9 +239,9 @@ static int raw_enable_allfilters(struct net_device *dev, struct sock *sk)
 }
 
 static int raw_notifier(struct notifier_block *nb,
-                        unsigned long msg, void *data)
+                        unsigned long msg, void *ptr)
 {
-        struct net_device *dev = (struct net_device *)data;
+        struct net_device *dev = netdev_notifier_info_to_dev(ptr);
         struct raw_sock *ro = container_of(nb, struct raw_sock, notifier);
         struct sock *sk = &ro->sk;
 
diff --git a/net/ceph/auth_none.c b/net/ceph/auth_none.c
index 925ca583c09c..8c93fa8d81bc 100644
--- a/net/ceph/auth_none.c
+++ b/net/ceph/auth_none.c
@@ -39,6 +39,11 @@ static int should_authenticate(struct ceph_auth_client *ac)
         return xi->starting;
 }
 
+static int build_request(struct ceph_auth_client *ac, void *buf, void *end)
+{
+        return 0;
+}
+
 /*
  * the generic auth code decode the global_id, and we carry no actual
  * authenticate state, so nothing happens here.
@@ -106,6 +111,7 @@ static const struct ceph_auth_client_ops ceph_auth_none_ops = {
         .destroy = destroy,
         .is_authenticated = is_authenticated,
         .should_authenticate = should_authenticate,
+        .build_request = build_request,
         .handle_reply = handle_reply,
         .create_authorizer = ceph_auth_none_create_authorizer,
         .destroy_authorizer = ceph_auth_none_destroy_authorizer,
diff --git a/net/ceph/osd_client.c b/net/ceph/osd_client.c
index 3a246a6cab47..dd47889adc4a 100644
--- a/net/ceph/osd_client.c
+++ b/net/ceph/osd_client.c
@@ -733,12 +733,14 @@ struct ceph_osd_request *ceph_osdc_new_request(struct ceph_osd_client *osdc,
 
         object_size = le32_to_cpu(layout->fl_object_size);
         object_base = off - objoff;
-        if (truncate_size <= object_base) {
-                truncate_size = 0;
-        } else {
-                truncate_size -= object_base;
-                if (truncate_size > object_size)
-                        truncate_size = object_size;
+        if (!(truncate_seq == 1 && truncate_size == -1ULL)) {
+                if (truncate_size <= object_base) {
+                        truncate_size = 0;
+                } else {
+                        truncate_size -= object_base;
+                        if (truncate_size > object_size)
+                                truncate_size = object_size;
+                }
         }
 
         osd_req_op_extent_init(req, 0, opcode, objoff, objlen,
@@ -1174,6 +1176,7 @@ static void __register_linger_request(struct ceph_osd_client *osdc,
                                     struct ceph_osd_request *req)
 {
         dout("__register_linger_request %p\n", req);
+        ceph_osdc_get_request(req);
         list_add_tail(&req->r_linger_item, &osdc->req_linger);
         if (req->r_osd)
                 list_add_tail(&req->r_linger_osd,
@@ -1196,6 +1199,7 @@ static void __unregister_linger_request(struct ceph_osd_client *osdc,
                 if (list_empty(&req->r_osd_item))
                         req->r_osd = NULL;
         }
+        ceph_osdc_put_request(req);
 }
 
 void ceph_osdc_unregister_linger_request(struct ceph_osd_client *osdc,
@@ -1203,9 +1207,8 @@ void ceph_osdc_unregister_linger_request(struct ceph_osd_client *osdc,
 {
         mutex_lock(&osdc->request_mutex);
         if (req->r_linger) {
-                __unregister_linger_request(osdc, req);
                 req->r_linger = 0;
-                ceph_osdc_put_request(req);
+                __unregister_linger_request(osdc, req);
         }
         mutex_unlock(&osdc->request_mutex);
 }
@@ -1217,11 +1220,6 @@ void ceph_osdc_set_request_linger(struct ceph_osd_client *osdc,
         if (!req->r_linger) {
                 dout("set_request_linger %p\n", req);
                 req->r_linger = 1;
-                /*
-                 * caller is now responsible for calling
-                 * unregister_linger_request
-                 */
-                ceph_osdc_get_request(req);
         }
 }
 EXPORT_SYMBOL(ceph_osdc_set_request_linger);
@@ -1339,10 +1337,6 @@ static void __send_request(struct ceph_osd_client *osdc,
 
         ceph_msg_get(req->r_request); /* send consumes a ref */
 
-        /* Mark the request unsafe if this is the first timet's being sent. */
-
-        if (!req->r_sent && req->r_unsafe_callback)
-                req->r_unsafe_callback(req, true);
         req->r_sent = req->r_osd->o_incarnation;
 
         ceph_con_send(&req->r_osd->o_con, req->r_request);
@@ -1433,8 +1427,6 @@ static void handle_osds_timeout(struct work_struct *work)
 
 static void complete_request(struct ceph_osd_request *req)
 {
-        if (req->r_unsafe_callback)
-                req->r_unsafe_callback(req, false);
         complete_all(&req->r_safe_completion);  /* fsync waiter */
 }
 
@@ -1526,6 +1518,8 @@ static void handle_reply(struct ceph_osd_client *osdc, struct ceph_msg *msg,
         for (i = 0; i < numops; i++)
                 req->r_reply_op_result[i] = ceph_decode_32(&p);
 
+        already_completed = req->r_got_reply;
+
         if (!req->r_got_reply) {
 
                 req->r_result = result;
@@ -1556,19 +1550,23 @@ static void handle_reply(struct ceph_osd_client *osdc, struct ceph_msg *msg,
             ((flags & CEPH_OSD_FLAG_WRITE) == 0))
                 __unregister_request(osdc, req);
 
-        already_completed = req->r_completed;
-        req->r_completed = 1;
         mutex_unlock(&osdc->request_mutex);
-        if (already_completed)
-                goto done;
 
-        if (req->r_callback)
-                req->r_callback(req, msg);
-        else
-                complete_all(&req->r_completion);
+        if (!already_completed) {
+                if (req->r_unsafe_callback &&
+                    result >= 0 && !(flags & CEPH_OSD_FLAG_ONDISK))
+                        req->r_unsafe_callback(req, true);
+                if (req->r_callback)
+                        req->r_callback(req, msg);
+                else
+                        complete_all(&req->r_completion);
+        }
 
-        if (flags & CEPH_OSD_FLAG_ONDISK)
+        if (flags & CEPH_OSD_FLAG_ONDISK) {
+                if (req->r_unsafe_callback && already_completed)
+                        req->r_unsafe_callback(req, false);
                 complete_request(req);
+        }
 
 done:
         dout("req=%p req->r_linger=%d\n", req, req->r_linger);
@@ -1633,8 +1631,10 @@ static void kick_requests(struct ceph_osd_client *osdc, int force_resend)
                         dout("%p tid %llu restart on osd%d\n",
                              req, req->r_tid,
                              req->r_osd ? req->r_osd->o_osd : -1);
+                        ceph_osdc_get_request(req);
                         __unregister_request(osdc, req);
                         __register_linger_request(osdc, req);
+                        ceph_osdc_put_request(req);
                         continue;
                 }
 
@@ -2123,7 +2123,6 @@ int ceph_osdc_start_request(struct ceph_osd_client *osdc,
         __register_request(osdc, req);
         req->r_sent = 0;
         req->r_got_reply = 0;
-        req->r_completed = 0;
         rc = __map_request(osdc, req, 0);
         if (rc < 0) {
                 if (nofail) {
@@ -2456,8 +2455,10 @@ static struct ceph_msg *get_reply(struct ceph_connection *con,
         ceph_msg_revoke_incoming(req->r_reply);
 
         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);
+                pr_warning("get_reply front %d > preallocated %d (%u#%llu)\n",
+                           front, (int)req->r_reply->front.iov_len,
+                           (unsigned int)con->peer_name.type,
+                           le64_to_cpu(con->peer_name.num));
                 m = ceph_msg_new(CEPH_MSG_OSD_OPREPLY, front, GFP_NOFS, false);
                 if (!m)
                         goto out;
diff --git a/net/core/datagram.c b/net/core/datagram.c
index b71423db7785..6e9ab31e457e 100644
--- a/net/core/datagram.c
+++ b/net/core/datagram.c
@@ -56,6 +56,7 @@
 #include <net/sock.h>
 #include <net/tcp_states.h>
 #include <trace/events/skb.h>
+#include <net/ll_poll.h>
 
 /*
  *      Is a socket 'connection oriented' ?
@@ -207,6 +208,10 @@ struct sk_buff *__skb_recv_datagram(struct sock *sk, unsigned int flags,
                 }
                 spin_unlock_irqrestore(&queue->lock, cpu_flags);
 
+                if (sk_can_busy_loop(sk) &&
+                    sk_busy_loop(sk, flags & MSG_DONTWAIT))
+                        continue;
+
                 /* User doesn't want to wait */
                 error = -EAGAIN;
                 if (!timeo)
diff --git a/net/core/dev.c b/net/core/dev.c
index faebb398fb46..560dafd83adf 100644
--- a/net/core/dev.c
+++ b/net/core/dev.c
@@ -129,6 +129,8 @@
 #include <linux/inetdevice.h>
 #include <linux/cpu_rmap.h>
 #include <linux/static_key.h>
+#include <linux/hashtable.h>
+#include <linux/vmalloc.h>
 
 #include "net-sysfs.h"
 
@@ -166,6 +168,12 @@ static struct list_head offload_base __read_mostly;
 DEFINE_RWLOCK(dev_base_lock);
 EXPORT_SYMBOL(dev_base_lock);
 
+/* protects napi_hash addition/deletion and napi_gen_id */
+static DEFINE_SPINLOCK(napi_hash_lock);
+
+static unsigned int napi_gen_id;
+static DEFINE_HASHTABLE(napi_hash, 8);
+
 seqcount_t devnet_rename_seq;
 
 static inline void dev_base_seq_inc(struct net *net)
@@ -1232,9 +1240,7 @@ static int __dev_open(struct net_device *dev)
          * If we don't do this there is a chance ndo_poll_controller
          * or ndo_poll may be running while we open the device
          */
-        ret = netpoll_rx_disable(dev);
-        if (ret)
-                return ret;
+        netpoll_rx_disable(dev);
 
         ret = call_netdevice_notifiers(NETDEV_PRE_UP, dev);
         ret = notifier_to_errno(ret);
@@ -1343,9 +1349,7 @@ static int __dev_close(struct net_device *dev)
         LIST_HEAD(single);
 
         /* Temporarily disable netpoll until the interface is down */
-        retval = netpoll_rx_disable(dev);
-        if (retval)
-                return retval;
+        netpoll_rx_disable(dev);
 
         list_add(&dev->unreg_list, &single);
         retval = __dev_close_many(&single);
@@ -1387,14 +1391,11 @@ static int dev_close_many(struct list_head *head)
  */
 int dev_close(struct net_device *dev)
 {
-        int ret = 0;
         if (dev->flags & IFF_UP) {
                 LIST_HEAD(single);
 
                 /* Block netpoll rx while the interface is going down */
-                ret = netpoll_rx_disable(dev);
-                if (ret)
-                        return ret;
+                netpoll_rx_disable(dev);
 
                 list_add(&dev->unreg_list, &single);
                 dev_close_many(&single);
@@ -1402,7 +1403,7 @@ int dev_close(struct net_device *dev)
 
                 netpoll_rx_enable(dev);
         }
-        return ret;
+        return 0;
 }
 EXPORT_SYMBOL(dev_close);
 
@@ -1432,6 +1433,14 @@ void dev_disable_lro(struct net_device *dev)
 }
 EXPORT_SYMBOL(dev_disable_lro);
 
+static int call_netdevice_notifier(struct notifier_block *nb, unsigned long val,
+                                   struct net_device *dev)
+{
+        struct netdev_notifier_info info;
+
+        netdev_notifier_info_init(&info, dev);
+        return nb->notifier_call(nb, val, &info);
+}
 
 static int dev_boot_phase = 1;
 
@@ -1464,7 +1473,7 @@ int register_netdevice_notifier(struct notifier_block *nb)
                 goto unlock;
         for_each_net(net) {
                 for_each_netdev(net, dev) {
-                        err = nb->notifier_call(nb, NETDEV_REGISTER, dev);
+                        err = call_netdevice_notifier(nb, NETDEV_REGISTER, dev);
                         err = notifier_to_errno(err);
                         if (err)
                                 goto rollback;
@@ -1472,7 +1481,7 @@ int register_netdevice_notifier(struct notifier_block *nb)
                         if (!(dev->flags & IFF_UP))
                                 continue;
 
-                        nb->notifier_call(nb, NETDEV_UP, dev);
+                        call_netdevice_notifier(nb, NETDEV_UP, dev);
                 }
         }
 
@@ -1488,10 +1497,11 @@ rollback:
                                 goto outroll;
 
                         if (dev->flags & IFF_UP) {
-                                nb->notifier_call(nb, NETDEV_GOING_DOWN, dev);
-                                nb->notifier_call(nb, NETDEV_DOWN, dev);
+                                call_netdevice_notifier(nb, NETDEV_GOING_DOWN,
+                                                        dev);
+                                call_netdevice_notifier(nb, NETDEV_DOWN, dev);
                         }
-                        nb->notifier_call(nb, NETDEV_UNREGISTER, dev);
+                        call_netdevice_notifier(nb, NETDEV_UNREGISTER, dev);
                 }
         }
 
@@ -1529,10 +1539,11 @@ int unregister_netdevice_notifier(struct notifier_block *nb)
         for_each_net(net) {
                 for_each_netdev(net, dev) {
                         if (dev->flags & IFF_UP) {
-                                nb->notifier_call(nb, NETDEV_GOING_DOWN, dev);
-                                nb->notifier_call(nb, NETDEV_DOWN, dev);
+                                call_netdevice_notifier(nb, NETDEV_GOING_DOWN,
+                                                        dev);
+                                call_netdevice_notifier(nb, NETDEV_DOWN, dev);
                         }
-                        nb->notifier_call(nb, NETDEV_UNREGISTER, dev);
+                        call_netdevice_notifier(nb, NETDEV_UNREGISTER, dev);
                 }
         }
 unlock:
@@ -1542,6 +1553,25 @@ unlock:
 EXPORT_SYMBOL(unregister_netdevice_notifier);
 
 /**
+ *      call_netdevice_notifiers_info - call all network notifier blocks
+ *      @val: value passed unmodified to notifier function
+ *      @dev: net_device pointer passed unmodified to notifier function
+ *      @info: notifier information data
+ *
+ *      Call all network notifier blocks.  Parameters and return value
+ *      are as for raw_notifier_call_chain().
+ */
+
+int call_netdevice_notifiers_info(unsigned long val, struct net_device *dev,
+                                  struct netdev_notifier_info *info)
+{
+        ASSERT_RTNL();
+        netdev_notifier_info_init(info, dev);
+        return raw_notifier_call_chain(&netdev_chain, val, info);
+}
+EXPORT_SYMBOL(call_netdevice_notifiers_info);
+
+/**
  *      call_netdevice_notifiers - call all network notifier blocks
  *      @val: value passed unmodified to notifier function
  *      @dev: net_device pointer passed unmodified to notifier function
@@ -1552,8 +1582,9 @@ EXPORT_SYMBOL(unregister_netdevice_notifier);
 
 int call_netdevice_notifiers(unsigned long val, struct net_device *dev)
 {
-        ASSERT_RTNL();
-        return raw_notifier_call_chain(&netdev_chain, val, dev);
+        struct netdev_notifier_info info;
+
+        return call_netdevice_notifiers_info(val, dev, &info);
 }
 EXPORT_SYMBOL(call_netdevice_notifiers);
 
@@ -1655,23 +1686,19 @@ int dev_forward_skb(struct net_device *dev, struct sk_buff *skb)
                 }
         }
 
-        skb_orphan(skb);
-
         if (unlikely(!is_skb_forwardable(dev, skb))) {
                 atomic_long_inc(&dev->rx_dropped);
                 kfree_skb(skb);
                 return NET_RX_DROP;
         }
-        skb->skb_iif = 0;
-        skb->dev = dev;
-        skb_dst_drop(skb);
-        skb->tstamp.tv64 = 0;
-        skb->pkt_type = PACKET_HOST;
+        skb_scrub_packet(skb);
         skb->protocol = eth_type_trans(skb, dev);
-        skb->mark = 0;
-        secpath_reset(skb);
-        nf_reset(skb);
-        nf_reset_trace(skb);
+
+        /* eth_type_trans() can set pkt_type.
+         * clear pkt_type _after_ calling eth_type_trans()
+         */
+        skb->pkt_type = PACKET_HOST;
+
         return netif_rx(skb);
 }
 EXPORT_SYMBOL_GPL(dev_forward_skb);
@@ -1736,7 +1763,7 @@ static void dev_queue_xmit_nit(struct sk_buff *skb, struct net_device *dev)
                         skb_reset_mac_header(skb2);
 
                         if (skb_network_header(skb2) < skb2->data ||
-                            skb2->network_header > skb2->tail) {
+                            skb_network_header(skb2) > skb_tail_pointer(skb2)) {
                                 net_crit_ratelimited("protocol %04x is buggy, dev %s\n",
                                                      ntohs(skb2->protocol),
                                                      dev->name);
@@ -3099,6 +3126,46 @@ static int rps_ipi_queued(struct softnet_data *sd)
         return 0;
 }
 
+#ifdef CONFIG_NET_FLOW_LIMIT
+int netdev_flow_limit_table_len __read_mostly = (1 << 12);
+#endif
+
+static bool skb_flow_limit(struct sk_buff *skb, unsigned int qlen)
+{
+#ifdef CONFIG_NET_FLOW_LIMIT
+        struct sd_flow_limit *fl;
+        struct softnet_data *sd;
+        unsigned int old_flow, new_flow;
+
+        if (qlen < (netdev_max_backlog >> 1))
+                return false;
+
+        sd = &__get_cpu_var(softnet_data);
+
+        rcu_read_lock();
+        fl = rcu_dereference(sd->flow_limit);
+        if (fl) {
+                new_flow = skb_get_rxhash(skb) & (fl->num_buckets - 1);
+                old_flow = fl->history[fl->history_head];
+                fl->history[fl->history_head] = new_flow;
+
+                fl->history_head++;
+                fl->history_head &= FLOW_LIMIT_HISTORY - 1;
+
+                if (likely(fl->buckets[old_flow]))
+                        fl->buckets[old_flow]--;
+
+                if (++fl->buckets[new_flow] > (FLOW_LIMIT_HISTORY >> 1)) {
+                        fl->count++;
+                        rcu_read_unlock();
+                        return true;
+                }
+        }
+        rcu_read_unlock();
+#endif
+        return false;
+}
+
 /*
  * enqueue_to_backlog is called to queue an skb to a per CPU backlog
  * queue (may be a remote CPU queue).
@@ -3108,13 +3175,15 @@ static int enqueue_to_backlog(struct sk_buff *skb, int cpu,
 {
         struct softnet_data *sd;
         unsigned long flags;
+        unsigned int qlen;
 
         sd = &per_cpu(softnet_data, cpu);
 
         local_irq_save(flags);
 
         rps_lock(sd);
-        if (skb_queue_len(&sd->input_pkt_queue) <= netdev_max_backlog) {
+        qlen = skb_queue_len(&sd->input_pkt_queue);
+        if (qlen <= netdev_max_backlog && !skb_flow_limit(skb, qlen)) {
                 if (skb_queue_len(&sd->input_pkt_queue)) {
 enqueue:
                         __skb_queue_tail(&sd->input_pkt_queue, skb);
@@ -3862,7 +3931,7 @@ static void skb_gro_reset_offset(struct sk_buff *skb)
         NAPI_GRO_CB(skb)->frag0 = NULL;
         NAPI_GRO_CB(skb)->frag0_len = 0;
 
-        if (skb->mac_header == skb->tail &&
+        if (skb_mac_header(skb) == skb_tail_pointer(skb) &&
             pinfo->nr_frags &&
             !PageHighMem(skb_frag_page(frag0))) {
                 NAPI_GRO_CB(skb)->frag0 = skb_frag_address(frag0);
@@ -4106,6 +4175,58 @@ void napi_complete(struct napi_struct *n)
 }
 EXPORT_SYMBOL(napi_complete);
 
+/* must be called under rcu_read_lock(), as we dont take a reference */
+struct napi_struct *napi_by_id(unsigned int napi_id)
+{
+        unsigned int hash = napi_id % HASH_SIZE(napi_hash);
+        struct napi_struct *napi;
+
+        hlist_for_each_entry_rcu(napi, &napi_hash[hash], napi_hash_node)
+                if (napi->napi_id == napi_id)
+                        return napi;
+
+        return NULL;
+}
+EXPORT_SYMBOL_GPL(napi_by_id);
+
+void napi_hash_add(struct napi_struct *napi)
+{
+        if (!test_and_set_bit(NAPI_STATE_HASHED, &napi->state)) {
+
+                spin_lock(&napi_hash_lock);
+
+                /* 0 is not a valid id, we also skip an id that is taken
+                 * we expect both events to be extremely rare
+                 */
+                napi->napi_id = 0;
+                while (!napi->napi_id) {
+                        napi->napi_id = ++napi_gen_id;
+                        if (napi_by_id(napi->napi_id))
+                                napi->napi_id = 0;
+                }
+
+                hlist_add_head_rcu(&napi->napi_hash_node,
+                        &napi_hash[napi->napi_id % HASH_SIZE(napi_hash)]);
+
+                spin_unlock(&napi_hash_lock);
+        }
+}
+EXPORT_SYMBOL_GPL(napi_hash_add);
+
+/* Warning : caller is responsible to make sure rcu grace period
+ * is respected before freeing memory containing @napi
+ */
+void napi_hash_del(struct napi_struct *napi)
+{
+        spin_lock(&napi_hash_lock);
+
+        if (test_and_clear_bit(NAPI_STATE_HASHED, &napi->state))
+                hlist_del_rcu(&napi->napi_hash_node);
+
+        spin_unlock(&napi_hash_lock);
+}
+EXPORT_SYMBOL_GPL(napi_hash_del);
+
 void netif_napi_add(struct net_device *dev, struct napi_struct *napi,
                     int (*poll)(struct napi_struct *, int), int weight)
 {
@@ -4404,7 +4525,7 @@ static int __netdev_upper_dev_link(struct net_device *dev,
         else
                 list_add_tail_rcu(&upper->list, &dev->upper_dev_list);
         dev_hold(upper_dev);
-
+        call_netdevice_notifiers(NETDEV_CHANGEUPPER, dev);
         return 0;
 }
 
@@ -4464,6 +4585,7 @@ void netdev_upper_dev_unlink(struct net_device *dev,
         list_del_rcu(&upper->list);
         dev_put(upper_dev);
         kfree_rcu(upper, rcu);
+        call_netdevice_notifiers(NETDEV_CHANGEUPPER, dev);
 }
 EXPORT_SYMBOL(netdev_upper_dev_unlink);
 
@@ -4734,8 +4856,13 @@ void __dev_notify_flags(struct net_device *dev, unsigned int old_flags)
         }
 
         if (dev->flags & IFF_UP &&
-            (changes & ~(IFF_UP | IFF_PROMISC | IFF_ALLMULTI | IFF_VOLATILE)))
-                call_netdevice_notifiers(NETDEV_CHANGE, dev);
+            (changes & ~(IFF_UP | IFF_PROMISC | IFF_ALLMULTI | IFF_VOLATILE))) {
+                struct netdev_notifier_change_info change_info;
+
+                change_info.flags_changed = changes;
+                call_netdevice_notifiers_info(NETDEV_CHANGE, dev,
+                                              &change_info.info);
+        }
 }
 
 /**
@@ -5158,17 +5285,28 @@ static void netdev_init_one_queue(struct net_device *dev,
 #endif
 }
 
+static void netif_free_tx_queues(struct net_device *dev)
+{
+        if (is_vmalloc_addr(dev->_tx))
+                vfree(dev->_tx);
+        else
+                kfree(dev->_tx);
+}
+
 static int netif_alloc_netdev_queues(struct net_device *dev)
 {
         unsigned int count = dev->num_tx_queues;
         struct netdev_queue *tx;
+        size_t sz = count * sizeof(*tx);
 
-        BUG_ON(count < 1);
-
-        tx = kcalloc(count, sizeof(struct netdev_queue), GFP_KERNEL);
-        if (!tx)
-                return -ENOMEM;
+        BUG_ON(count < 1 || count > 0xffff);
 
+        tx = kzalloc(sz, GFP_KERNEL | __GFP_NOWARN | __GFP_REPEAT);
+        if (!tx) {
+                tx = vzalloc(sz);
+                if (!tx)
+                        return -ENOMEM;
+        }
         dev->_tx = tx;
 
         netdev_for_each_tx_queue(dev, netdev_init_one_queue, NULL);
@@ -5269,6 +5407,10 @@ int register_netdevice(struct net_device *dev)
          */
         dev->hw_enc_features |= NETIF_F_SG;
 
+        /* Make NETIF_F_SG inheritable to MPLS.
+         */
+        dev->mpls_features |= NETIF_F_SG;
+
         ret = call_netdevice_notifiers(NETDEV_POST_INIT, dev);
         ret = notifier_to_errno(ret);
         if (ret)
@@ -5712,7 +5854,7 @@ free_all:
 
 free_pcpu:
         free_percpu(dev->pcpu_refcnt);
-        kfree(dev->_tx);
+        netif_free_tx_queues(dev);
 #ifdef CONFIG_RPS
         kfree(dev->_rx);
 #endif
@@ -5737,7 +5879,7 @@ void free_netdev(struct net_device *dev)
 
         release_net(dev_net(dev));
 
-        kfree(dev->_tx);
+        netif_free_tx_queues(dev);
 #ifdef CONFIG_RPS
         kfree(dev->_rx);
 #endif
@@ -6048,7 +6190,7 @@ netdev_features_t netdev_increment_features(netdev_features_t all,
 }
 EXPORT_SYMBOL(netdev_increment_features);
 
-static struct hlist_head *netdev_create_hash(void)
+static struct hlist_head * __net_init netdev_create_hash(void)
 {
         int i;
         struct hlist_head *hash;
@@ -6304,6 +6446,10 @@ static int __init net_dev_init(void)
                 sd->backlog.weight = weight_p;
                 sd->backlog.gro_list = NULL;
                 sd->backlog.gro_count = 0;
+
+#ifdef CONFIG_NET_FLOW_LIMIT
+                sd->flow_limit = NULL;
+#endif
         }
 
         dev_boot_phase = 0;
diff --git a/net/core/drop_monitor.c b/net/core/drop_monitor.c
index d23b6682f4e9..5e78d44333b9 100644
--- a/net/core/drop_monitor.c
+++ b/net/core/drop_monitor.c
@@ -295,9 +295,9 @@ static int net_dm_cmd_trace(struct sk_buff *skb,
 }
 
 static int dropmon_net_event(struct notifier_block *ev_block,
-                        unsigned long event, void *ptr)
+                             unsigned long event, void *ptr)
 {
-        struct net_device *dev = ptr;
+        struct net_device *dev = netdev_notifier_info_to_dev(ptr);
         struct dm_hw_stat_delta *new_stat = NULL;
         struct dm_hw_stat_delta *tmp;
 
diff --git a/net/core/dst.c b/net/core/dst.c
index df9cc810ec8e..ca4231ec7347 100644
--- a/net/core/dst.c
+++ b/net/core/dst.c
@@ -372,7 +372,7 @@ static void dst_ifdown(struct dst_entry *dst, struct net_device *dev,
 static int dst_dev_event(struct notifier_block *this, unsigned long event,
                          void *ptr)
 {
-        struct net_device *dev = ptr;
+        struct net_device *dev = netdev_notifier_info_to_dev(ptr);
         struct dst_entry *dst, *last = NULL;
 
         switch (event) {
diff --git a/net/core/ethtool.c b/net/core/ethtool.c
index ce91766eeca9..ab5fa6336c84 100644
--- a/net/core/ethtool.c
+++ b/net/core/ethtool.c
@@ -82,6 +82,7 @@ static const char netdev_features_strings[NETDEV_FEATURE_COUNT][ETH_GSTRING_LEN]
         [NETIF_F_FSO_BIT] =              "tx-fcoe-segmentation",
         [NETIF_F_GSO_GRE_BIT] =          "tx-gre-segmentation",
         [NETIF_F_GSO_UDP_TUNNEL_BIT] =   "tx-udp_tnl-segmentation",
+        [NETIF_F_GSO_MPLS_BIT] =         "tx-mpls-segmentation",
 
         [NETIF_F_FCOE_CRC_BIT] =         "tx-checksum-fcoe-crc",
         [NETIF_F_SCTP_CSUM_BIT] =        "tx-checksum-sctp",
@@ -1319,10 +1320,19 @@ static int ethtool_get_dump_data(struct net_device *dev,
         if (ret)
                 return ret;
 
-        len = (tmp.len > dump.len) ? dump.len : tmp.len;
+        len = min(tmp.len, dump.len);
         if (!len)
                 return -EFAULT;
 
+        /* Don't ever let the driver think there's more space available
+         * than it requested with .get_dump_flag().
+         */
+        dump.len = len;
+
+        /* Always allocate enough space to hold the whole thing so that the
+         * driver does not need to check the length and bother with partial
+         * dumping.
+         */
         data = vzalloc(tmp.len);
         if (!data)
                 return -ENOMEM;
@@ -1330,6 +1340,16 @@ static int ethtool_get_dump_data(struct net_device *dev,
         if (ret)
                 goto out;
 
+        /* There are two sane possibilities:
+         * 1. The driver's .get_dump_data() does not touch dump.len.
+         * 2. Or it may set dump.len to how much it really writes, which
+         *    should be tmp.len (or len if it can do a partial dump).
+         * In any case respond to userspace with the actual length of data
+         * it's receiving.
+         */
+        WARN_ON(dump.len != len && dump.len != tmp.len);
+        dump.len = len;
+
         if (copy_to_user(useraddr, &dump, sizeof(dump))) {
                 ret = -EFAULT;
                 goto out;
@@ -1413,7 +1433,7 @@ static int ethtool_get_module_eeprom(struct net_device *dev,
                                       modinfo.eeprom_len);
 }
 
-/* The main entry point in this file.  Called from net/core/dev.c */
+/* The main entry point in this file.  Called from net/core/dev_ioctl.c */
 
 int dev_ethtool(struct net *net, struct ifreq *ifr)
 {
diff --git a/net/core/fib_rules.c b/net/core/fib_rules.c
index d5a9f8ead0d8..21735440c44a 100644
--- a/net/core/fib_rules.c
+++ b/net/core/fib_rules.c
@@ -705,9 +705,9 @@ static void detach_rules(struct list_head *rules, struct net_device *dev)
 
 
 static int fib_rules_event(struct notifier_block *this, unsigned long event,
-                            void *ptr)
+                           void *ptr)
 {
-        struct net_device *dev = ptr;
+        struct net_device *dev = netdev_notifier_info_to_dev(ptr);
         struct net *net = dev_net(dev);
         struct fib_rules_ops *ops;
 
diff --git a/net/core/gen_estimator.c b/net/core/gen_estimator.c
index d9d198aa9fed..6b5b6e7013ca 100644
--- a/net/core/gen_estimator.c
+++ b/net/core/gen_estimator.c
@@ -82,7 +82,7 @@ struct gen_estimator
 {
         struct list_head        list;
         struct gnet_stats_basic_packed  *bstats;
-        struct gnet_stats_rate_est      *rate_est;
+        struct gnet_stats_rate_est64    *rate_est;
         spinlock_t              *stats_lock;
         int                     ewma_log;
         u64                     last_bytes;
@@ -167,7 +167,7 @@ static void gen_add_node(struct gen_estimator *est)
 
 static
 struct gen_estimator *gen_find_node(const struct gnet_stats_basic_packed *bstats,
-                                    const struct gnet_stats_rate_est *rate_est)
+                                    const struct gnet_stats_rate_est64 *rate_est)
 {
         struct rb_node *p = est_root.rb_node;
 
@@ -203,7 +203,7 @@ struct gen_estimator *gen_find_node(const struct gnet_stats_basic_packed *bstats
  *
  */
 int gen_new_estimator(struct gnet_stats_basic_packed *bstats,
-                      struct gnet_stats_rate_est *rate_est,
+                      struct gnet_stats_rate_est64 *rate_est,
                       spinlock_t *stats_lock,
                       struct nlattr *opt)
 {
@@ -258,7 +258,7 @@ EXPORT_SYMBOL(gen_new_estimator);
  * Note : Caller should respect an RCU grace period before freeing stats_lock
  */
 void gen_kill_estimator(struct gnet_stats_basic_packed *bstats,
-                        struct gnet_stats_rate_est *rate_est)
+                        struct gnet_stats_rate_est64 *rate_est)
 {
         struct gen_estimator *e;
 
@@ -290,7 +290,7 @@ EXPORT_SYMBOL(gen_kill_estimator);
  * Returns 0 on success or a negative error code.
  */
 int gen_replace_estimator(struct gnet_stats_basic_packed *bstats,
-                          struct gnet_stats_rate_est *rate_est,
+                          struct gnet_stats_rate_est64 *rate_est,
                           spinlock_t *stats_lock, struct nlattr *opt)
 {
         gen_kill_estimator(bstats, rate_est);
@@ -306,7 +306,7 @@ EXPORT_SYMBOL(gen_replace_estimator);
  * Returns true if estimator is active, and false if not.
  */
 bool gen_estimator_active(const struct gnet_stats_basic_packed *bstats,
-                          const struct gnet_stats_rate_est *rate_est)
+                          const struct gnet_stats_rate_est64 *rate_est)
 {
         bool res;
 
diff --git a/net/core/gen_stats.c b/net/core/gen_stats.c
index ddedf211e588..9d3d9e78397b 100644
--- a/net/core/gen_stats.c
+++ b/net/core/gen_stats.c
@@ -143,18 +143,30 @@ EXPORT_SYMBOL(gnet_stats_copy_basic);
 int
 gnet_stats_copy_rate_est(struct gnet_dump *d,
                          const struct gnet_stats_basic_packed *b,
-                         struct gnet_stats_rate_est *r)
+                         struct gnet_stats_rate_est64 *r)
 {
+        struct gnet_stats_rate_est est;
+        int res;
+
         if (b && !gen_estimator_active(b, r))
                 return 0;
 
+        est.bps = min_t(u64, UINT_MAX, r->bps);
+        /* we have some time before reaching 2^32 packets per second */
+        est.pps = r->pps;
+
         if (d->compat_tc_stats) {
-                d->tc_stats.bps = r->bps;
-                d->tc_stats.pps = r->pps;
+                d->tc_stats.bps = est.bps;
+                d->tc_stats.pps = est.pps;
         }
 
-        if (d->tail)
-                return gnet_stats_copy(d, TCA_STATS_RATE_EST, r, sizeof(*r));
+        if (d->tail) {
+                res = gnet_stats_copy(d, TCA_STATS_RATE_EST, &est, sizeof(est));
+                if (res < 0 || est.bps == r->bps)
+                        return res;
+                /* emit 64bit stats only if needed */
+                return gnet_stats_copy(d, TCA_STATS_RATE_EST64, r, sizeof(*r));
+        }
 
         return 0;
 }
diff --git a/net/core/link_watch.c b/net/core/link_watch.c
index 8f82a5cc3851..9c3a839322ba 100644
--- a/net/core/link_watch.c
+++ b/net/core/link_watch.c
@@ -92,6 +92,9 @@ static bool linkwatch_urgent_event(struct net_device *dev)
         if (dev->ifindex != dev->iflink)
                 return true;
 
+        if (dev->priv_flags & IFF_TEAM_PORT)
+                return true;
+
         return netif_carrier_ok(dev) && qdisc_tx_changing(dev);
 }
 
diff --git a/net/core/neighbour.c b/net/core/neighbour.c
index 5c56b217b999..b7de821f98df 100644
--- a/net/core/neighbour.c
+++ b/net/core/neighbour.c
@@ -231,7 +231,7 @@ static void neigh_flush_dev(struct neigh_table *tbl, struct net_device *dev)
                                    we must kill timers etc. and move
                                    it to safe state.
                                  */
-                                skb_queue_purge(&n->arp_queue);
+                                __skb_queue_purge(&n->arp_queue);
                                 n->arp_queue_len_bytes = 0;
                                 n->output = neigh_blackhole;
                                 if (n->nud_state & NUD_VALID)
@@ -286,7 +286,7 @@ static struct neighbour *neigh_alloc(struct neigh_table *tbl, struct net_device
         if (!n)
                 goto out_entries;
 
-        skb_queue_head_init(&n->arp_queue);
+        __skb_queue_head_init(&n->arp_queue);
         rwlock_init(&n->lock);
         seqlock_init(&n->ha_lock);
         n->updated        = n->used = now;
@@ -708,7 +708,9 @@ void neigh_destroy(struct neighbour *neigh)
         if (neigh_del_timer(neigh))
                 pr_warn("Impossible event\n");
 
-        skb_queue_purge(&neigh->arp_queue);
+        write_lock_bh(&neigh->lock);
+        __skb_queue_purge(&neigh->arp_queue);
+        write_unlock_bh(&neigh->lock);
         neigh->arp_queue_len_bytes = 0;
 
         if (dev->netdev_ops->ndo_neigh_destroy)
@@ -858,7 +860,7 @@ static void neigh_invalidate(struct neighbour *neigh)
                 neigh->ops->error_report(neigh, skb);
                 write_lock(&neigh->lock);
         }
-        skb_queue_purge(&neigh->arp_queue);
+        __skb_queue_purge(&neigh->arp_queue);
         neigh->arp_queue_len_bytes = 0;
 }
 
@@ -1210,7 +1212,7 @@ int neigh_update(struct neighbour *neigh, const u8 *lladdr, u8 new,
 
                         write_lock_bh(&neigh->lock);
                 }
-                skb_queue_purge(&neigh->arp_queue);
+                __skb_queue_purge(&neigh->arp_queue);
                 neigh->arp_queue_len_bytes = 0;
         }
 out:
@@ -1419,7 +1421,7 @@ static inline struct neigh_parms *lookup_neigh_parms(struct neigh_table *tbl,
 
         for (p = &tbl->parms; p; p = p->next) {
                 if ((p->dev && p->dev->ifindex == ifindex && net_eq(neigh_parms_net(p), net)) ||
-                    (!p->dev && !ifindex))
+                    (!p->dev && !ifindex && net_eq(net, &init_net)))
                         return p;
         }
 
@@ -1429,15 +1431,11 @@ static inline struct neigh_parms *lookup_neigh_parms(struct neigh_table *tbl,
 struct neigh_parms *neigh_parms_alloc(struct net_device *dev,
                                       struct neigh_table *tbl)
 {
-        struct neigh_parms *p, *ref;
+        struct neigh_parms *p;
         struct net *net = dev_net(dev);
         const struct net_device_ops *ops = dev->netdev_ops;
 
-        ref = lookup_neigh_parms(tbl, net, 0);
-        if (!ref)
-                return NULL;
-
-        p = kmemdup(ref, sizeof(*p), GFP_KERNEL);
+        p = kmemdup(&tbl->parms, sizeof(*p), GFP_KERNEL);
         if (p) {
                 p->tbl            = tbl;
                 atomic_set(&p->refcnt, 1);
@@ -2053,6 +2051,12 @@ static int neightbl_set(struct sk_buff *skb, struct nlmsghdr *nlh)
                 }
         }
 
+        err = -ENOENT;
+        if ((tb[NDTA_THRESH1] || tb[NDTA_THRESH2] ||
+             tb[NDTA_THRESH3] || tb[NDTA_GC_INTERVAL]) &&
+            !net_eq(net, &init_net))
+                goto errout_tbl_lock;
+
         if (tb[NDTA_THRESH1])
                 tbl->gc_thresh1 = nla_get_u32(tb[NDTA_THRESH1]);
 
@@ -2765,11 +2769,11 @@ EXPORT_SYMBOL(neigh_app_ns);
 static int zero;
 static int unres_qlen_max = INT_MAX / SKB_TRUESIZE(ETH_FRAME_LEN);
 
-static int proc_unres_qlen(ctl_table *ctl, int write, void __user *buffer,
-                           size_t *lenp, loff_t *ppos)
+static int proc_unres_qlen(struct ctl_table *ctl, int write,
+                           void __user *buffer, size_t *lenp, loff_t *ppos)
 {
         int size, ret;
-        ctl_table tmp = *ctl;
+        struct ctl_table tmp = *ctl;
 
         tmp.extra1 = &zero;
         tmp.extra2 = &unres_qlen_max;
diff --git a/net/core/net-procfs.c b/net/core/net-procfs.c
index 569d355fec3e..2bf83299600a 100644
--- a/net/core/net-procfs.c
+++ b/net/core/net-procfs.c
@@ -146,11 +146,23 @@ static void softnet_seq_stop(struct seq_file *seq, void *v)
 static int softnet_seq_show(struct seq_file *seq, void *v)
 {
         struct softnet_data *sd = v;
+        unsigned int flow_limit_count = 0;
 
-        seq_printf(seq, "%08x %08x %08x %08x %08x %08x %08x %08x %08x %08x\n",
+#ifdef CONFIG_NET_FLOW_LIMIT
+        struct sd_flow_limit *fl;
+
+        rcu_read_lock();
+        fl = rcu_dereference(sd->flow_limit);
+        if (fl)
+                flow_limit_count = fl->count;
+        rcu_read_unlock();
+#endif
+
+        seq_printf(seq,
+                   "%08x %08x %08x %08x %08x %08x %08x %08x %08x %08x %08x\n",
                    sd->processed, sd->dropped, sd->time_squeeze, 0,
                    0, 0, 0, 0, /* was fastroute */
-                   sd->cpu_collision, sd->received_rps);
+                   sd->cpu_collision, sd->received_rps, flow_limit_count);
         return 0;
 }
 
diff --git a/net/core/netpoll.c b/net/core/netpoll.c
index cec074be8c43..2c637e9a0b27 100644
--- a/net/core/netpoll.c
+++ b/net/core/netpoll.c
@@ -12,6 +12,7 @@
 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
 
 #include <linux/moduleparam.h>
+#include <linux/kernel.h>
 #include <linux/netdevice.h>
 #include <linux/etherdevice.h>
 #include <linux/string.h>
@@ -247,7 +248,7 @@ static void netpoll_poll_dev(struct net_device *dev)
         zap_completion_queue();
 }
 
-int netpoll_rx_disable(struct net_device *dev)
+void netpoll_rx_disable(struct net_device *dev)
 {
         struct netpoll_info *ni;
         int idx;
@@ -257,7 +258,6 @@ int netpoll_rx_disable(struct net_device *dev)
         if (ni)
                 down(&ni->dev_lock);
         srcu_read_unlock(&netpoll_srcu, idx);
-        return 0;
 }
 EXPORT_SYMBOL(netpoll_rx_disable);
 
@@ -690,25 +690,20 @@ static void netpoll_neigh_reply(struct sk_buff *skb, struct netpoll_info *npinfo
                         send_skb->dev = skb->dev;
 
                         skb_reset_network_header(send_skb);
-                        skb_put(send_skb, sizeof(struct ipv6hdr));
-                        hdr = ipv6_hdr(send_skb);
-
+                        hdr = (struct ipv6hdr *) skb_put(send_skb, sizeof(struct ipv6hdr));
                         *(__be32*)hdr = htonl(0x60000000);
-
                         hdr->payload_len = htons(size);
                         hdr->nexthdr = IPPROTO_ICMPV6;
                         hdr->hop_limit = 255;
                         hdr->saddr = *saddr;
                         hdr->daddr = *daddr;
 
-                        send_skb->transport_header = send_skb->tail;
-                        skb_put(send_skb, size);
-
-                        icmp6h = (struct icmp6hdr *)skb_transport_header(skb);
+                        icmp6h = (struct icmp6hdr *) skb_put(send_skb, sizeof(struct icmp6hdr));
                         icmp6h->icmp6_type = NDISC_NEIGHBOUR_ADVERTISEMENT;
                         icmp6h->icmp6_router = 0;
                         icmp6h->icmp6_solicited = 1;
-                        target = (struct in6_addr *)(skb_transport_header(send_skb) + sizeof(struct icmp6hdr));
+
+                        target = (struct in6_addr *) skb_put(send_skb, sizeof(struct in6_addr));
                         *target = msg->target;
                         icmp6h->icmp6_cksum = csum_ipv6_magic(saddr, daddr, size,
                                                               IPPROTO_ICMPV6,
diff --git a/net/core/netprio_cgroup.c b/net/core/netprio_cgroup.c
index 0777d0aa18c3..e533259dce3c 100644
--- a/net/core/netprio_cgroup.c
+++ b/net/core/netprio_cgroup.c
@@ -261,7 +261,7 @@ struct cgroup_subsys net_prio_subsys = {
 static int netprio_device_event(struct notifier_block *unused,
                                 unsigned long event, void *ptr)
 {
-        struct net_device *dev = ptr;
+        struct net_device *dev = netdev_notifier_info_to_dev(ptr);
         struct netprio_map *old;
 
         /*
diff --git a/net/core/pktgen.c b/net/core/pktgen.c
index 11f2704c3810..9640972ec50e 100644
--- a/net/core/pktgen.c
+++ b/net/core/pktgen.c
@@ -1921,7 +1921,7 @@ static void pktgen_change_name(const struct pktgen_net *pn, struct net_device *d
 static int pktgen_device_event(struct notifier_block *unused,
                                unsigned long event, void *ptr)
 {
-        struct net_device *dev = ptr;
+        struct net_device *dev = netdev_notifier_info_to_dev(ptr);
         struct pktgen_net *pn = net_generic(dev_net(dev), pg_net_id);
 
         if (pn->pktgen_exiting)
@@ -2627,6 +2627,29 @@ static void pktgen_finalize_skb(struct pktgen_dev *pkt_dev, struct sk_buff *skb,
         pgh->tv_usec = htonl(timestamp.tv_usec);
 }
 
+static struct sk_buff *pktgen_alloc_skb(struct net_device *dev,
+                                        struct pktgen_dev *pkt_dev,
+                                        unsigned int extralen)
+{
+        struct sk_buff *skb = NULL;
+        unsigned int size = pkt_dev->cur_pkt_size + 64 + extralen +
+                            pkt_dev->pkt_overhead;
+
+        if (pkt_dev->flags & F_NODE) {
+                int node = pkt_dev->node >= 0 ? pkt_dev->node : numa_node_id();
+
+                skb = __alloc_skb(NET_SKB_PAD + size, GFP_NOWAIT, 0, node);
+                if (likely(skb)) {
+                        skb_reserve(skb, NET_SKB_PAD);
+                        skb->dev = dev;
+                }
+        } else {
+                 skb = __netdev_alloc_skb(dev, size, GFP_NOWAIT);
+        }
+
+        return skb;
+}
+
 static struct sk_buff *fill_packet_ipv4(struct net_device *odev,
                                         struct pktgen_dev *pkt_dev)
 {
@@ -2657,32 +2680,13 @@ static struct sk_buff *fill_packet_ipv4(struct net_device *odev,
 
         datalen = (odev->hard_header_len + 16) & ~0xf;
 
-        if (pkt_dev->flags & F_NODE) {
-                int node;
-
-                if (pkt_dev->node >= 0)
-                        node = pkt_dev->node;
-                else
-                        node =  numa_node_id();
-
-                skb = __alloc_skb(NET_SKB_PAD + pkt_dev->cur_pkt_size + 64
-                                  + datalen + pkt_dev->pkt_overhead, GFP_NOWAIT, 0, node);
-                if (likely(skb)) {
-                        skb_reserve(skb, NET_SKB_PAD);
-                        skb->dev = odev;
-                }
-        }
-        else
-          skb = __netdev_alloc_skb(odev,
-                                   pkt_dev->cur_pkt_size + 64
-                                   + datalen + pkt_dev->pkt_overhead, GFP_NOWAIT);
-
+        skb = pktgen_alloc_skb(odev, pkt_dev, datalen);
         if (!skb) {
                 sprintf(pkt_dev->result, "No memory");
                 return NULL;
         }
-        prefetchw(skb->data);
 
+        prefetchw(skb->data);
         skb_reserve(skb, datalen);
 
         /*  Reserve for ethernet and IP header  */
@@ -2708,15 +2712,15 @@ static struct sk_buff *fill_packet_ipv4(struct net_device *odev,
                 *vlan_encapsulated_proto = htons(ETH_P_IP);
         }
 
-        skb->network_header = skb->tail;
-        skb->transport_header = skb->network_header + sizeof(struct iphdr);
-        skb_put(skb, sizeof(struct iphdr) + sizeof(struct udphdr));
+        skb_set_mac_header(skb, 0);
+        skb_set_network_header(skb, skb->len);
+        iph = (struct iphdr *) skb_put(skb, sizeof(struct iphdr));
+
+        skb_set_transport_header(skb, skb->len);
+        udph = (struct udphdr *) skb_put(skb, sizeof(struct udphdr));
         skb_set_queue_mapping(skb, queue_map);
         skb->priority = pkt_dev->skb_priority;
 
-        iph = ip_hdr(skb);
-        udph = udp_hdr(skb);
-
         memcpy(eth, pkt_dev->hh, 12);
         *(__be16 *) & eth[12] = protocol;
 
@@ -2746,8 +2750,6 @@ static struct sk_buff *fill_packet_ipv4(struct net_device *odev,
         iph->check = 0;
         iph->check = ip_fast_csum((void *)iph, iph->ihl);
         skb->protocol = protocol;
-        skb->mac_header = (skb->network_header - ETH_HLEN -
-                           pkt_dev->pkt_overhead);
         skb->dev = odev;
         skb->pkt_type = PACKET_HOST;
         pktgen_finalize_skb(pkt_dev, skb, datalen);
@@ -2788,15 +2790,13 @@ static struct sk_buff *fill_packet_ipv6(struct net_device *odev,
         mod_cur_headers(pkt_dev);
         queue_map = pkt_dev->cur_queue_map;
 
-        skb = __netdev_alloc_skb(odev,
-                                 pkt_dev->cur_pkt_size + 64
-                                 + 16 + pkt_dev->pkt_overhead, GFP_NOWAIT);
+        skb = pktgen_alloc_skb(odev, pkt_dev, 16);
         if (!skb) {
                 sprintf(pkt_dev->result, "No memory");
                 return NULL;
         }
-        prefetchw(skb->data);
 
+        prefetchw(skb->data);
         skb_reserve(skb, 16);
 
         /*  Reserve for ethernet and IP header  */
@@ -2822,13 +2822,14 @@ static struct sk_buff *fill_packet_ipv6(struct net_device *odev,
                 *vlan_encapsulated_proto = htons(ETH_P_IPV6);
         }
 
-        skb->network_header = skb->tail;
-        skb->transport_header = skb->network_header + sizeof(struct ipv6hdr);
-        skb_put(skb, sizeof(struct ipv6hdr) + sizeof(struct udphdr));
+        skb_set_mac_header(skb, 0);
+        skb_set_network_header(skb, skb->len);
+        iph = (struct ipv6hdr *) skb_put(skb, sizeof(struct ipv6hdr));
+
+        skb_set_transport_header(skb, skb->len);
+        udph = (struct udphdr *) skb_put(skb, sizeof(struct udphdr));
         skb_set_queue_mapping(skb, queue_map);
         skb->priority = pkt_dev->skb_priority;
-        iph = ipv6_hdr(skb);
-        udph = udp_hdr(skb);
 
         memcpy(eth, pkt_dev->hh, 12);
         *(__be16 *) &eth[12] = protocol;
@@ -2863,8 +2864,6 @@ static struct sk_buff *fill_packet_ipv6(struct net_device *odev,
         iph->daddr = pkt_dev->cur_in6_daddr;
         iph->saddr = pkt_dev->cur_in6_saddr;
 
-        skb->mac_header = (skb->network_header - ETH_HLEN -
-                           pkt_dev->pkt_overhead);
         skb->protocol = protocol;
         skb->dev = odev;
         skb->pkt_type = PACKET_HOST;
diff --git a/net/core/rtnetlink.c b/net/core/rtnetlink.c
index a08bd2b7fe3f..3de740834d1f 100644
--- a/net/core/rtnetlink.c
+++ b/net/core/rtnetlink.c
@@ -947,6 +947,7 @@ static int rtnl_fill_ifinfo(struct sk_buff *skb, struct net_device *dev,
                         struct ifla_vf_vlan vf_vlan;
                         struct ifla_vf_tx_rate vf_tx_rate;
                         struct ifla_vf_spoofchk vf_spoofchk;
+                        struct ifla_vf_link_state vf_linkstate;
 
                         /*
                          * Not all SR-IOV capable drivers support the
@@ -956,18 +957,24 @@ static int rtnl_fill_ifinfo(struct sk_buff *skb, struct net_device *dev,
                          */
                         ivi.spoofchk = -1;
                         memset(ivi.mac, 0, sizeof(ivi.mac));
+                        /* The default value for VF link state is "auto"
+                         * IFLA_VF_LINK_STATE_AUTO which equals zero
+                         */
+                        ivi.linkstate = 0;
                         if (dev->netdev_ops->ndo_get_vf_config(dev, i, &ivi))
                                 break;
                         vf_mac.vf =
                                 vf_vlan.vf =
                                 vf_tx_rate.vf =
-                                vf_spoofchk.vf = ivi.vf;
+                                vf_spoofchk.vf =
+                                vf_linkstate.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_linkstate.link_state = ivi.linkstate;
                         vf = nla_nest_start(skb, IFLA_VF_INFO);
                         if (!vf) {
                                 nla_nest_cancel(skb, vfinfo);
@@ -978,7 +985,9 @@ static int rtnl_fill_ifinfo(struct sk_buff *skb, struct net_device *dev,
                             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))
+                                    &vf_spoofchk) ||
+                            nla_put(skb, IFLA_VF_LINK_STATE, sizeof(vf_linkstate),
+                                    &vf_linkstate))
                                 goto nla_put_failure;
                         nla_nest_end(skb, vf);
                 }
@@ -1238,6 +1247,15 @@ static int do_setvfinfo(struct net_device *dev, struct nlattr *attr)
                                                                ivs->setting);
                         break;
                 }
+                case IFLA_VF_LINK_STATE: {
+                        struct ifla_vf_link_state *ivl;
+                        ivl = nla_data(vf);
+                        err = -EOPNOTSUPP;
+                        if (ops->ndo_set_vf_link_state)
+                                err = ops->ndo_set_vf_link_state(dev, ivl->vf,
+                                                                 ivl->link_state);
+                        break;
+                }
                 default:
                         err = -EINVAL;
                         break;
@@ -2091,10 +2109,6 @@ static int rtnl_fdb_add(struct sk_buff *skb, struct nlmsghdr *nlh)
         }
 
         addr = nla_data(tb[NDA_LLADDR]);
-        if (is_zero_ether_addr(addr)) {
-                pr_info("PF_BRIDGE: RTM_NEWNEIGH with invalid ether address\n");
-                return -EINVAL;
-        }
 
         err = -EOPNOTSUPP;
 
@@ -2192,10 +2206,6 @@ static int rtnl_fdb_del(struct sk_buff *skb, struct nlmsghdr *nlh)
         }
 
         addr = nla_data(tb[NDA_LLADDR]);
-        if (is_zero_ether_addr(addr)) {
-                pr_info("PF_BRIDGE: RTM_DELNEIGH with invalid ether address\n");
-                return -EINVAL;
-        }
 
         err = -EOPNOTSUPP;
 
@@ -2667,7 +2677,7 @@ static void rtnetlink_rcv(struct sk_buff *skb)
 
 static int rtnetlink_event(struct notifier_block *this, unsigned long event, void *ptr)
 {
-        struct net_device *dev = ptr;
+        struct net_device *dev = netdev_notifier_info_to_dev(ptr);
 
         switch (event) {
         case NETDEV_UP:
diff --git a/net/core/skbuff.c b/net/core/skbuff.c
index 1c1738cc4538..724bb7cb173f 100644
--- a/net/core/skbuff.c
+++ b/net/core/skbuff.c
@@ -199,9 +199,7 @@ struct sk_buff *__alloc_skb_head(gfp_t gfp_mask, int node)
         skb->truesize = sizeof(struct sk_buff);
         atomic_set(&skb->users, 1);
 
-#ifdef NET_SKBUFF_DATA_USES_OFFSET
-        skb->mac_header = ~0U;
-#endif
+        skb->mac_header = (typeof(skb->mac_header))~0U;
 out:
         return skb;
 }
@@ -275,10 +273,8 @@ struct sk_buff *__alloc_skb(unsigned int size, gfp_t gfp_mask,
         skb->data = data;
         skb_reset_tail_pointer(skb);
         skb->end = skb->tail + size;
-#ifdef NET_SKBUFF_DATA_USES_OFFSET
-        skb->mac_header = ~0U;
-        skb->transport_header = ~0U;
-#endif
+        skb->mac_header = (typeof(skb->mac_header))~0U;
+        skb->transport_header = (typeof(skb->transport_header))~0U;
 
         /* make sure we initialize shinfo sequentially */
         shinfo = skb_shinfo(skb);
@@ -344,10 +340,8 @@ struct sk_buff *build_skb(void *data, unsigned int frag_size)
         skb->data = data;
         skb_reset_tail_pointer(skb);
         skb->end = skb->tail + size;
-#ifdef NET_SKBUFF_DATA_USES_OFFSET
-        skb->mac_header = ~0U;
-        skb->transport_header = ~0U;
-#endif
+        skb->mac_header = (typeof(skb->mac_header))~0U;
+        skb->transport_header = (typeof(skb->transport_header))~0U;
 
         /* make sure we initialize shinfo sequentially */
         shinfo = skb_shinfo(skb);
@@ -703,6 +697,7 @@ static void __copy_skb_header(struct sk_buff *new, const struct sk_buff *old)
         new->transport_header   = old->transport_header;
         new->network_header     = old->network_header;
         new->mac_header         = old->mac_header;
+        new->inner_protocol     = old->inner_protocol;
         new->inner_transport_header = old->inner_transport_header;
         new->inner_network_header = old->inner_network_header;
         new->inner_mac_header = old->inner_mac_header;
@@ -743,6 +738,10 @@ static void __copy_skb_header(struct sk_buff *new, const struct sk_buff *old)
         new->vlan_tci           = old->vlan_tci;
 
         skb_copy_secmark(new, old);
+
+#ifdef CONFIG_NET_LL_RX_POLL
+        new->napi_id    = old->napi_id;
+#endif
 }
 
 /*
@@ -915,18 +914,8 @@ static void skb_headers_offset_update(struct sk_buff *skb, int off)
 
 static void copy_skb_header(struct sk_buff *new, const struct sk_buff *old)
 {
-#ifndef NET_SKBUFF_DATA_USES_OFFSET
-        /*
-         *      Shift between the two data areas in bytes
-         */
-        unsigned long offset = new->data - old->data;
-#endif
-
         __copy_skb_header(new, old);
 
-#ifndef NET_SKBUFF_DATA_USES_OFFSET
-        skb_headers_offset_update(new, offset);
-#endif
         skb_shinfo(new)->gso_size = skb_shinfo(old)->gso_size;
         skb_shinfo(new)->gso_segs = skb_shinfo(old)->gso_segs;
         skb_shinfo(new)->gso_type = skb_shinfo(old)->gso_type;
@@ -1118,7 +1107,7 @@ int pskb_expand_head(struct sk_buff *skb, int nhead, int ntail,
         skb->end      = skb->head + size;
 #endif
         skb->tail             += off;
-        skb_headers_offset_update(skb, off);
+        skb_headers_offset_update(skb, nhead);
         /* Only adjust this if it actually is csum_start rather than csum */
         if (skb->ip_summed == CHECKSUM_PARTIAL)
                 skb->csum_start += nhead;
@@ -1213,9 +1202,8 @@ struct sk_buff *skb_copy_expand(const struct sk_buff *skb,
         off                  = newheadroom - oldheadroom;
         if (n->ip_summed == CHECKSUM_PARTIAL)
                 n->csum_start += off;
-#ifdef NET_SKBUFF_DATA_USES_OFFSET
+
         skb_headers_offset_update(n, off);
-#endif
 
         return n;
 }
@@ -2558,8 +2546,13 @@ unsigned int skb_seq_read(unsigned int consumed, const u8 **data,
         unsigned int block_limit, abs_offset = consumed + st->lower_offset;
         skb_frag_t *frag;
 
-        if (unlikely(abs_offset >= st->upper_offset))
+        if (unlikely(abs_offset >= st->upper_offset)) {
+                if (st->frag_data) {
+                        kunmap_atomic(st->frag_data);
+                        st->frag_data = NULL;
+                }
                 return 0;
+        }
 
 next_skb:
         block_limit = skb_headlen(st->cur_skb) + st->stepped_offset;
@@ -2857,7 +2850,7 @@ struct sk_buff *skb_segment(struct sk_buff *skb, netdev_features_t features)
                                                  doffset + tnl_hlen);
 
                 if (fskb != skb_shinfo(skb)->frag_list)
-                        continue;
+                        goto perform_csum_check;
 
                 if (!sg) {
                         nskb->ip_summed = CHECKSUM_NONE;
@@ -2921,6 +2914,7 @@ skip_fraglist:
                 nskb->len += nskb->data_len;
                 nskb->truesize += nskb->data_len;
 
+perform_csum_check:
                 if (!csum) {
                         nskb->csum = skb_checksum(nskb, doffset,
                                                   nskb->len - doffset, 0);
@@ -3503,3 +3497,26 @@ bool skb_try_coalesce(struct sk_buff *to, struct sk_buff *from,
         return true;
 }
 EXPORT_SYMBOL(skb_try_coalesce);
+
+/**
+ * skb_scrub_packet - scrub an skb before sending it to another netns
+ *
+ * @skb: buffer to clean
+ *
+ * skb_scrub_packet can be used to clean an skb before injecting it in
+ * another namespace. We have to clear all information in the skb that
+ * could impact namespace isolation.
+ */
+void skb_scrub_packet(struct sk_buff *skb)
+{
+        skb_orphan(skb);
+        skb->tstamp.tv64 = 0;
+        skb->pkt_type = PACKET_HOST;
+        skb->skb_iif = 0;
+        skb_dst_drop(skb);
+        skb->mark = 0;
+        secpath_reset(skb);
+        nf_reset(skb);
+        nf_reset_trace(skb);
+}
+EXPORT_SYMBOL_GPL(skb_scrub_packet);
diff --git a/net/core/sock.c b/net/core/sock.c
index d6d024cfaaaf..ab06b719f5b1 100644
--- a/net/core/sock.c
+++ b/net/core/sock.c
@@ -139,6 +139,8 @@
 #include <net/tcp.h>
 #endif
 
+#include <net/ll_poll.h>
+
 static DEFINE_MUTEX(proto_list_mutex);
 static LIST_HEAD(proto_list);
 
@@ -898,6 +900,19 @@ set_rcvbuf:
                 sock_valbool_flag(sk, SOCK_SELECT_ERR_QUEUE, valbool);
                 break;
 
+#ifdef CONFIG_NET_LL_RX_POLL
+        case SO_LL:
+                /* allow unprivileged users to decrease the value */
+                if ((val > sk->sk_ll_usec) && !capable(CAP_NET_ADMIN))
+                        ret = -EPERM;
+                else {
+                        if (val < 0)
+                                ret = -EINVAL;
+                        else
+                                sk->sk_ll_usec = val;
+                }
+                break;
+#endif
         default:
                 ret = -ENOPROTOOPT;
                 break;
@@ -1155,6 +1170,12 @@ int sock_getsockopt(struct socket *sock, int level, int optname,
                 v.val = sock_flag(sk, SOCK_SELECT_ERR_QUEUE);
                 break;
 
+#ifdef CONFIG_NET_LL_RX_POLL
+        case SO_LL:
+                v.val = sk->sk_ll_usec;
+                break;
+#endif
+
         default:
                 return -ENOPROTOOPT;
         }
@@ -2271,6 +2292,11 @@ void sock_init_data(struct socket *sock, struct sock *sk)
 
         sk->sk_stamp = ktime_set(-1L, 0);
 
+#ifdef CONFIG_NET_LL_RX_POLL
+        sk->sk_napi_id          =       0;
+        sk->sk_ll_usec          =       sysctl_net_ll_read;
+#endif
+
         /*
          * Before updating sk_refcnt, we must commit prior changes to memory
          * (Documentation/RCU/rculist_nulls.txt for details)
diff --git a/net/core/sysctl_net_core.c b/net/core/sysctl_net_core.c
index cfdb46ab3a7f..afc677eadd93 100644
--- a/net/core/sysctl_net_core.c
+++ b/net/core/sysctl_net_core.c
@@ -19,16 +19,17 @@
 #include <net/ip.h>
 #include <net/sock.h>
 #include <net/net_ratelimit.h>
+#include <net/ll_poll.h>
 
 static int one = 1;
 
 #ifdef CONFIG_RPS
-static int rps_sock_flow_sysctl(ctl_table *table, int write,
+static int rps_sock_flow_sysctl(struct ctl_table *table, int write,
                                 void __user *buffer, size_t *lenp, loff_t *ppos)
 {
         unsigned int orig_size, size;
         int ret, i;
-        ctl_table tmp = {
+        struct ctl_table tmp = {
                 .data = &size,
                 .maxlen = sizeof(size),
                 .mode = table->mode
@@ -87,6 +88,109 @@ static int rps_sock_flow_sysctl(ctl_table *table, int write,
 }
 #endif /* CONFIG_RPS */
 
+#ifdef CONFIG_NET_FLOW_LIMIT
+static DEFINE_MUTEX(flow_limit_update_mutex);
+
+static int flow_limit_cpu_sysctl(struct ctl_table *table, int write,
+                                 void __user *buffer, size_t *lenp,
+                                 loff_t *ppos)
+{
+        struct sd_flow_limit *cur;
+        struct softnet_data *sd;
+        cpumask_var_t mask;
+        int i, len, ret = 0;
+
+        if (!alloc_cpumask_var(&mask, GFP_KERNEL))
+                return -ENOMEM;
+
+        if (write) {
+                ret = cpumask_parse_user(buffer, *lenp, mask);
+                if (ret)
+                        goto done;
+
+                mutex_lock(&flow_limit_update_mutex);
+                len = sizeof(*cur) + netdev_flow_limit_table_len;
+                for_each_possible_cpu(i) {
+                        sd = &per_cpu(softnet_data, i);
+                        cur = rcu_dereference_protected(sd->flow_limit,
+                                     lockdep_is_held(&flow_limit_update_mutex));
+                        if (cur && !cpumask_test_cpu(i, mask)) {
+                                RCU_INIT_POINTER(sd->flow_limit, NULL);
+                                synchronize_rcu();
+                                kfree(cur);
+                        } else if (!cur && cpumask_test_cpu(i, mask)) {
+                                cur = kzalloc(len, GFP_KERNEL);
+                                if (!cur) {
+                                        /* not unwinding previous changes */
+                                        ret = -ENOMEM;
+                                        goto write_unlock;
+                                }
+                                cur->num_buckets = netdev_flow_limit_table_len;
+                                rcu_assign_pointer(sd->flow_limit, cur);
+                        }
+                }
+write_unlock:
+                mutex_unlock(&flow_limit_update_mutex);
+        } else {
+                char kbuf[128];
+
+                if (*ppos || !*lenp) {
+                        *lenp = 0;
+                        goto done;
+                }
+
+                cpumask_clear(mask);
+                rcu_read_lock();
+                for_each_possible_cpu(i) {
+                        sd = &per_cpu(softnet_data, i);
+                        if (rcu_dereference(sd->flow_limit))
+                                cpumask_set_cpu(i, mask);
+                }
+                rcu_read_unlock();
+
+                len = min(sizeof(kbuf) - 1, *lenp);
+                len = cpumask_scnprintf(kbuf, len, mask);
+                if (!len) {
+                        *lenp = 0;
+                        goto done;
+                }
+                if (len < *lenp)
+                        kbuf[len++] = '\n';
+                if (copy_to_user(buffer, kbuf, len)) {
+                        ret = -EFAULT;
+                        goto done;
+                }
+                *lenp = len;
+                *ppos += len;
+        }
+
+done:
+        free_cpumask_var(mask);
+        return ret;
+}
+
+static int flow_limit_table_len_sysctl(struct ctl_table *table, int write,
+                                       void __user *buffer, size_t *lenp,
+                                       loff_t *ppos)
+{
+        unsigned int old, *ptr;
+        int ret;
+
+        mutex_lock(&flow_limit_update_mutex);
+
+        ptr = table->data;
+        old = *ptr;
+        ret = proc_dointvec(table, write, buffer, lenp, ppos);
+        if (!ret && write && !is_power_of_2(*ptr)) {
+                *ptr = old;
+                ret = -EINVAL;
+        }
+
+        mutex_unlock(&flow_limit_update_mutex);
+        return ret;
+}
+#endif /* CONFIG_NET_FLOW_LIMIT */
+
 static struct ctl_table net_core_table[] = {
 #ifdef CONFIG_NET
         {
@@ -180,6 +284,37 @@ static struct ctl_table net_core_table[] = {
                 .proc_handler   = rps_sock_flow_sysctl
         },
 #endif
+#ifdef CONFIG_NET_FLOW_LIMIT
+        {
+                .procname       = "flow_limit_cpu_bitmap",
+                .mode           = 0644,
+                .proc_handler   = flow_limit_cpu_sysctl
+        },
+        {
+                .procname       = "flow_limit_table_len",
+                .data           = &netdev_flow_limit_table_len,
+                .maxlen         = sizeof(int),
+                .mode           = 0644,
+                .proc_handler   = flow_limit_table_len_sysctl
+        },
+#endif /* CONFIG_NET_FLOW_LIMIT */
+#ifdef CONFIG_NET_LL_RX_POLL
+        {
+                .procname       = "low_latency_poll",
+                .data           = &sysctl_net_ll_poll,
+                .maxlen         = sizeof(unsigned int),
+                .mode           = 0644,
+                .proc_handler   = proc_dointvec
+        },
+        {
+                .procname       = "low_latency_read",
+                .data           = &sysctl_net_ll_read,
+                .maxlen         = sizeof(unsigned int),
+                .mode           = 0644,
+                .proc_handler   = proc_dointvec
+        },
+#
+#endif
 #endif /* CONFIG_NET */
         {
                 .procname       = "netdev_budget",
diff --git a/net/core/utils.c b/net/core/utils.c
index 3c7f5b51b979..aa88e23fc87a 100644
--- a/net/core/utils.c
+++ b/net/core/utils.c
@@ -338,25 +338,3 @@ void inet_proto_csum_replace16(__sum16 *sum, struct sk_buff *skb,
                                   csum_unfold(*sum)));
 }
 EXPORT_SYMBOL(inet_proto_csum_replace16);
-
-int mac_pton(const char *s, u8 *mac)
-{
-        int i;
-
-        /* XX:XX:XX:XX:XX:XX */
-        if (strlen(s) < 3 * ETH_ALEN - 1)
-                return 0;
-
-        /* Don't dirty result unless string is valid MAC. */
-        for (i = 0; i < ETH_ALEN; i++) {
-                if (!isxdigit(s[i * 3]) || !isxdigit(s[i * 3 + 1]))
-                        return 0;
-                if (i != ETH_ALEN - 1 && s[i * 3 + 2] != ':')
-                        return 0;
-        }
-        for (i = 0; i < ETH_ALEN; i++) {
-                mac[i] = (hex_to_bin(s[i * 3]) << 4) | hex_to_bin(s[i * 3 + 1]);
-        }
-        return 1;
-}
-EXPORT_SYMBOL(mac_pton);
diff --git a/net/decnet/af_decnet.c b/net/decnet/af_decnet.c
index c21f200eed93..dd4d506ef923 100644
--- a/net/decnet/af_decnet.c
+++ b/net/decnet/af_decnet.c
@@ -2078,9 +2078,9 @@ out_err:
 }
 
 static int dn_device_event(struct notifier_block *this, unsigned long event,
-                        void *ptr)
+                           void *ptr)
 {
-        struct net_device *dev = (struct net_device *)ptr;
+        struct net_device *dev = netdev_notifier_info_to_dev(ptr);
 
         if (!net_eq(dev_net(dev), &init_net))
                 return NOTIFY_DONE;
diff --git a/net/decnet/dn_dev.c b/net/decnet/dn_dev.c
index 7d9197063ebb..dd0dfb25f4b1 100644
--- a/net/decnet/dn_dev.c
+++ b/net/decnet/dn_dev.c
@@ -158,11 +158,11 @@ static int max_t3[] = { 8191 }; /* Must fit in 16 bits when multiplied by BCT3MU
 static int min_priority[1];
 static int max_priority[] = { 127 }; /* From DECnet spec */
 
-static int dn_forwarding_proc(ctl_table *, int,
+static int dn_forwarding_proc(struct ctl_table *, int,
                         void __user *, size_t *, loff_t *);
 static struct dn_dev_sysctl_table {
         struct ctl_table_header *sysctl_header;
-        ctl_table dn_dev_vars[5];
+        struct ctl_table dn_dev_vars[5];
 } dn_dev_sysctl = {
         NULL,
         {
@@ -242,7 +242,7 @@ static void dn_dev_sysctl_unregister(struct dn_dev_parms *parms)
         }
 }
 
-static int dn_forwarding_proc(ctl_table *table, int write,
+static int dn_forwarding_proc(struct ctl_table *table, int write,
                                 void __user *buffer,
                                 size_t *lenp, loff_t *ppos)
 {
diff --git a/net/decnet/sysctl_net_decnet.c b/net/decnet/sysctl_net_decnet.c
index a55eeccaa72f..5325b541c526 100644
--- a/net/decnet/sysctl_net_decnet.c
+++ b/net/decnet/sysctl_net_decnet.c
@@ -132,7 +132,7 @@ static int parse_addr(__le16 *addr, char *str)
         return 0;
 }
 
-static int dn_node_address_handler(ctl_table *table, int write,
+static int dn_node_address_handler(struct ctl_table *table, int write,
                                 void __user *buffer,
                                 size_t *lenp, loff_t *ppos)
 {
@@ -183,7 +183,7 @@ static int dn_node_address_handler(ctl_table *table, int write,
         return 0;
 }
 
-static int dn_def_dev_handler(ctl_table *table, int write,
+static int dn_def_dev_handler(struct ctl_table *table, int write,
                                 void __user *buffer,
                                 size_t *lenp, loff_t *ppos)
 {
@@ -246,7 +246,7 @@ static int dn_def_dev_handler(ctl_table *table, int write,
         return 0;
 }
 
-static ctl_table dn_table[] = {
+static struct ctl_table dn_table[] = {
         {
                 .procname = "node_address",
                 .maxlen = 7,
diff --git a/net/ieee802154/6lowpan.c b/net/ieee802154/6lowpan.c
index 55e1fd5b3e56..3b9d5f20bd1c 100644
--- a/net/ieee802154/6lowpan.c
+++ b/net/ieee802154/6lowpan.c
@@ -1352,10 +1352,9 @@ static inline void lowpan_netlink_fini(void)
 }
 
 static int lowpan_device_event(struct notifier_block *unused,
-                                unsigned long event,
-                                void *ptr)
+                               unsigned long event, void *ptr)
 {
-        struct net_device *dev = ptr;
+        struct net_device *dev = netdev_notifier_info_to_dev(ptr);
         LIST_HEAD(del_list);
         struct lowpan_dev_record *entry, *tmp;
 
diff --git a/net/ipv4/Kconfig b/net/ipv4/Kconfig
index 8603ca827104..37cf1a6ea3ad 100644
--- a/net/ipv4/Kconfig
+++ b/net/ipv4/Kconfig
@@ -9,10 +9,7 @@ config IP_MULTICAST
           intend to participate in the MBONE, a high bandwidth network on top
           of the Internet which carries audio and video broadcasts. More
           information about the MBONE is on the WWW at
-          <http://www.savetz.com/mbone/>. Information about the multicast
-          capabilities of the various network cards is contained in
-          <file:Documentation/networking/multicast.txt>. For most people, it's
-          safe to say N.
+          <http://www.savetz.com/mbone/>. For most people, it's safe to say N.
 
 config IP_ADVANCED_ROUTER
         bool "IP: advanced router"
@@ -223,10 +220,8 @@ config IP_MROUTE
           packets that have several destination addresses. It is needed on the
           MBONE, a high bandwidth network on top of the Internet which carries
           audio and video broadcasts. In order to do that, you would most
-          likely run the program mrouted. Information about the multicast
-          capabilities of the various network cards is contained in
-          <file:Documentation/networking/multicast.txt>. If you haven't heard
-          about it, you don't need it.
+          likely run the program mrouted. If you haven't heard about it, you
+          don't need it.
 
 config IP_MROUTE_MULTIPLE_TABLES
         bool "IP: multicast policy routing"
diff --git a/net/ipv4/Makefile b/net/ipv4/Makefile
index 089cb9f36387..4b81e91c80fe 100644
--- a/net/ipv4/Makefile
+++ b/net/ipv4/Makefile
@@ -8,10 +8,10 @@ obj-y     := route.o inetpeer.o protocol.o \
              inet_timewait_sock.o inet_connection_sock.o \
              tcp.o tcp_input.o tcp_output.o tcp_timer.o tcp_ipv4.o \
              tcp_minisocks.o tcp_cong.o tcp_metrics.o tcp_fastopen.o \
-             datagram.o raw.o udp.o udplite.o \
-             arp.o icmp.o devinet.o af_inet.o  igmp.o \
+             tcp_offload.o datagram.o raw.o udp.o udplite.o \
+             udp_offload.o arp.o icmp.o devinet.o af_inet.o igmp.o \
              fib_frontend.o fib_semantics.o fib_trie.o \
-             inet_fragment.o ping.o
+             inet_fragment.o ping.o ip_tunnel_core.o
 
 obj-$(CONFIG_NET_IP_TUNNEL) += ip_tunnel.o
 obj-$(CONFIG_SYSCTL) += sysctl_net_ipv4.o
@@ -19,6 +19,7 @@ obj-$(CONFIG_PROC_FS) += proc.o
 obj-$(CONFIG_IP_MULTIPLE_TABLES) += fib_rules.o
 obj-$(CONFIG_IP_MROUTE) += ipmr.o
 obj-$(CONFIG_NET_IPIP) += ipip.o
+gre-y := gre_demux.o gre_offload.o
 obj-$(CONFIG_NET_IPGRE_DEMUX) += gre.o
 obj-$(CONFIG_NET_IPGRE) += ip_gre.o
 obj-$(CONFIG_NET_IPVTI) += ip_vti.o
diff --git a/net/ipv4/af_inet.c b/net/ipv4/af_inet.c
index d01be2a3ae53..b4d0be2b7ce9 100644
--- a/net/ipv4/af_inet.c
+++ b/net/ipv4/af_inet.c
@@ -1295,6 +1295,7 @@ static struct sk_buff *inet_gso_segment(struct sk_buff *skb,
                        SKB_GSO_GRE |
                        SKB_GSO_TCPV6 |
                        SKB_GSO_UDP_TUNNEL |
+                       SKB_GSO_MPLS |
                        0)))
                 goto out;
 
@@ -1384,7 +1385,7 @@ static struct sk_buff **inet_gro_receive(struct sk_buff **head,
                 goto out_unlock;
 
         id = ntohl(*(__be32 *)&iph->id);
-        flush = (u16)((ntohl(*(__be32 *)iph) ^ skb_gro_len(skb)) | (id ^ IP_DF));
+        flush = (u16)((ntohl(*(__be32 *)iph) ^ skb_gro_len(skb)) | (id & ~IP_DF));
         id >>= 16;
 
         for (p = *head; p; p = p->next) {
@@ -1406,6 +1407,7 @@ static struct sk_buff **inet_gro_receive(struct sk_buff **head,
                 NAPI_GRO_CB(p)->flush |=
                         (iph->ttl ^ iph2->ttl) |
                         (iph->tos ^ iph2->tos) |
+                        (__force int)((iph->frag_off ^ iph2->frag_off) & htons(IP_DF)) |
                         ((u16)(ntohs(iph2->id) + NAPI_GRO_CB(p)->count) ^ id);
 
                 NAPI_GRO_CB(p)->flush |= flush;
@@ -1557,15 +1559,6 @@ static const struct net_protocol tcp_protocol = {
         .netns_ok       =       1,
 };
 
-static const struct net_offload tcp_offload = {
-        .callbacks = {
-                .gso_send_check =       tcp_v4_gso_send_check,
-                .gso_segment    =       tcp_tso_segment,
-                .gro_receive    =       tcp4_gro_receive,
-                .gro_complete   =       tcp4_gro_complete,
-        },
-};
-
 static const struct net_protocol udp_protocol = {
         .handler =      udp_rcv,
         .err_handler =  udp_err,
@@ -1573,13 +1566,6 @@ static const struct net_protocol udp_protocol = {
         .netns_ok =     1,
 };
 
-static const struct net_offload udp_offload = {
-        .callbacks = {
-                .gso_send_check = udp4_ufo_send_check,
-                .gso_segment = udp4_ufo_fragment,
-        },
-};
-
 static const struct net_protocol icmp_protocol = {
         .handler =      icmp_rcv,
         .err_handler =  icmp_err,
@@ -1679,10 +1665,10 @@ static int __init ipv4_offload_init(void)
         /*
          * Add offloads
          */
-        if (inet_add_offload(&udp_offload, IPPROTO_UDP) < 0)
+        if (udpv4_offload_init() < 0)
                 pr_crit("%s: Cannot add UDP protocol offload\n", __func__);
-        if (inet_add_offload(&tcp_offload, IPPROTO_TCP) < 0)
-                pr_crit("%s: Cannot add TCP protocol offlaod\n", __func__);
+        if (tcpv4_offload_init() < 0)
+                pr_crit("%s: Cannot add TCP protocol offload\n", __func__);
 
         dev_add_offload(&ip_packet_offload);
         return 0;
diff --git a/net/ipv4/ah4.c b/net/ipv4/ah4.c
index 2e7f1948216f..717902669d2f 100644
--- a/net/ipv4/ah4.c
+++ b/net/ipv4/ah4.c
@@ -419,12 +419,9 @@ static void ah4_err(struct sk_buff *skb, u32 info)
         if (!x)
                 return;
 
-        if (icmp_hdr(skb)->type == ICMP_DEST_UNREACH) {
-                atomic_inc(&flow_cache_genid);
-                rt_genid_bump(net);
-
+        if (icmp_hdr(skb)->type == ICMP_DEST_UNREACH)
                 ipv4_update_pmtu(skb, net, info, 0, 0, IPPROTO_AH, 0);
-        } else
+        else
                 ipv4_redirect(skb, net, 0, 0, IPPROTO_AH, 0);
         xfrm_state_put(x);
 }
diff --git a/net/ipv4/arp.c b/net/ipv4/arp.c
index 247ec1951c35..4429b013f269 100644
--- a/net/ipv4/arp.c
+++ b/net/ipv4/arp.c
@@ -1234,13 +1234,19 @@ out:
 static int arp_netdev_event(struct notifier_block *this, unsigned long event,
                             void *ptr)
 {
-        struct net_device *dev = ptr;
+        struct net_device *dev = netdev_notifier_info_to_dev(ptr);
+        struct netdev_notifier_change_info *change_info;
 
         switch (event) {
         case NETDEV_CHANGEADDR:
                 neigh_changeaddr(&arp_tbl, dev);
                 rt_cache_flush(dev_net(dev));
                 break;
+        case NETDEV_CHANGE:
+                change_info = ptr;
+                if (change_info->flags_changed & IFF_NOARP)
+                        neigh_changeaddr(&arp_tbl, dev);
+                break;
         default:
                 break;
         }
diff --git a/net/ipv4/devinet.c b/net/ipv4/devinet.c
index dfc39d4d48b7..8d48c392adcc 100644
--- a/net/ipv4/devinet.c
+++ b/net/ipv4/devinet.c
@@ -215,6 +215,7 @@ void in_dev_finish_destroy(struct in_device *idev)
 
         WARN_ON(idev->ifa_list);
         WARN_ON(idev->mc_list);
+        kfree(rcu_dereference_protected(idev->mc_hash, 1));
 #ifdef NET_REFCNT_DEBUG
         pr_debug("%s: %p=%s\n", __func__, idev, dev ? dev->name : "NIL");
 #endif
@@ -1333,7 +1334,7 @@ static void inetdev_send_gratuitous_arp(struct net_device *dev,
 static int inetdev_event(struct notifier_block *this, unsigned long event,
                          void *ptr)
 {
-        struct net_device *dev = ptr;
+        struct net_device *dev = netdev_notifier_info_to_dev(ptr);
         struct in_device *in_dev = __in_dev_get_rtnl(dev);
 
         ASSERT_RTNL();
@@ -1941,7 +1942,7 @@ static void inet_forward_change(struct net *net)
         }
 }
 
-static int devinet_conf_proc(ctl_table *ctl, int write,
+static int devinet_conf_proc(struct ctl_table *ctl, int write,
                              void __user *buffer,
                              size_t *lenp, loff_t *ppos)
 {
@@ -1984,7 +1985,7 @@ static int devinet_conf_proc(ctl_table *ctl, int write,
         return ret;
 }
 
-static int devinet_sysctl_forward(ctl_table *ctl, int write,
+static int devinet_sysctl_forward(struct ctl_table *ctl, int write,
                                   void __user *buffer,
                                   size_t *lenp, loff_t *ppos)
 {
@@ -2027,7 +2028,7 @@ static int devinet_sysctl_forward(ctl_table *ctl, int write,
         return ret;
 }
 
-static int ipv4_doint_and_flush(ctl_table *ctl, int write,
+static int ipv4_doint_and_flush(struct ctl_table *ctl, int write,
                                 void __user *buffer,
                                 size_t *lenp, loff_t *ppos)
 {
diff --git a/net/ipv4/esp4.c b/net/ipv4/esp4.c
index 4cfe34d4cc96..ab3d814bc80a 100644
--- a/net/ipv4/esp4.c
+++ b/net/ipv4/esp4.c
@@ -502,12 +502,9 @@ static void esp4_err(struct sk_buff *skb, u32 info)
         if (!x)
                 return;
 
-        if (icmp_hdr(skb)->type == ICMP_DEST_UNREACH) {
-                atomic_inc(&flow_cache_genid);
-                rt_genid_bump(net);
-
+        if (icmp_hdr(skb)->type == ICMP_DEST_UNREACH)
                 ipv4_update_pmtu(skb, net, info, 0, 0, IPPROTO_ESP, 0);
-        } else
+        else
                 ipv4_redirect(skb, net, 0, 0, IPPROTO_ESP, 0);
         xfrm_state_put(x);
 }
diff --git a/net/ipv4/fib_frontend.c b/net/ipv4/fib_frontend.c
index c7629a209f9d..b3f627ac4ed8 100644
--- a/net/ipv4/fib_frontend.c
+++ b/net/ipv4/fib_frontend.c
@@ -961,7 +961,7 @@ static void nl_fib_input(struct sk_buff *skb)
             nlmsg_len(nlh) < sizeof(*frn))
                 return;
 
-        skb = skb_clone(skb, GFP_KERNEL);
+        skb = netlink_skb_clone(skb, GFP_KERNEL);
         if (skb == NULL)
                 return;
         nlh = nlmsg_hdr(skb);
@@ -1038,7 +1038,7 @@ static int fib_inetaddr_event(struct notifier_block *this, unsigned long event,
 
 static int fib_netdev_event(struct notifier_block *this, unsigned long event, void *ptr)
 {
-        struct net_device *dev = ptr;
+        struct net_device *dev = netdev_notifier_info_to_dev(ptr);
         struct in_device *in_dev;
         struct net *net = dev_net(dev);
 
diff --git a/net/ipv4/fib_semantics.c b/net/ipv4/fib_semantics.c
index 8f6cb7a87cd6..d5dbca5ecf62 100644
--- a/net/ipv4/fib_semantics.c
+++ b/net/ipv4/fib_semantics.c
@@ -169,7 +169,8 @@ static void free_nh_exceptions(struct fib_nh *nh)
                         
                         next = rcu_dereference_protected(fnhe->fnhe_next, 1);
 
-                        rt_fibinfo_free(&fnhe->fnhe_rth);
+                        rt_fibinfo_free(&fnhe->fnhe_rth_input);
+                        rt_fibinfo_free(&fnhe->fnhe_rth_output);
 
                         kfree(fnhe);
 
diff --git a/net/ipv4/gre.c b/net/ipv4/gre.c
deleted file mode 100644
index 7856d1651d05..000000000000
--- a/net/ipv4/gre.c
+++ /dev/null
@@ -1,253 +0,0 @@
-/*
- *      GRE over IPv4 demultiplexer driver
- *
- *      Authors: Dmitry Kozlov (xeb@mail.ru)
- *
- *      This program is free software; you can redistribute it and/or
- *      modify it under the terms of the GNU General Public License
- *      as published by the Free Software Foundation; either version
- *      2 of the License, or (at your option) any later version.
- *
- */
-
-#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
-
-#include <linux/module.h>
-#include <linux/kernel.h>
-#include <linux/kmod.h>
-#include <linux/skbuff.h>
-#include <linux/in.h>
-#include <linux/ip.h>
-#include <linux/netdevice.h>
-#include <linux/if_tunnel.h>
-#include <linux/spinlock.h>
-#include <net/protocol.h>
-#include <net/gre.h>
-
-
-static const struct gre_protocol __rcu *gre_proto[GREPROTO_MAX] __read_mostly;
-static DEFINE_SPINLOCK(gre_proto_lock);
-
-int gre_add_protocol(const struct gre_protocol *proto, u8 version)
-{
-        if (version >= GREPROTO_MAX)
-                goto err_out;
-
-        spin_lock(&gre_proto_lock);
-        if (gre_proto[version])
-                goto err_out_unlock;
-
-        RCU_INIT_POINTER(gre_proto[version], proto);
-        spin_unlock(&gre_proto_lock);
-        return 0;
-
-err_out_unlock:
-        spin_unlock(&gre_proto_lock);
-err_out:
-        return -1;
-}
-EXPORT_SYMBOL_GPL(gre_add_protocol);
-
-int gre_del_protocol(const struct gre_protocol *proto, u8 version)
-{
-        if (version >= GREPROTO_MAX)
-                goto err_out;
-
-        spin_lock(&gre_proto_lock);
-        if (rcu_dereference_protected(gre_proto[version],
-                        lockdep_is_held(&gre_proto_lock)) != proto)
-                goto err_out_unlock;
-        RCU_INIT_POINTER(gre_proto[version], NULL);
-        spin_unlock(&gre_proto_lock);
-        synchronize_rcu();
-        return 0;
-
-err_out_unlock:
-        spin_unlock(&gre_proto_lock);
-err_out:
-        return -1;
-}
-EXPORT_SYMBOL_GPL(gre_del_protocol);
-
-static int gre_rcv(struct sk_buff *skb)
-{
-        const struct gre_protocol *proto;
-        u8 ver;
-        int ret;
-
-        if (!pskb_may_pull(skb, 12))
-                goto drop;
-
-        ver = skb->data[1]&0x7f;
-        if (ver >= GREPROTO_MAX)
-                goto drop;
-
-        rcu_read_lock();
-        proto = rcu_dereference(gre_proto[ver]);
-        if (!proto || !proto->handler)
-                goto drop_unlock;
-        ret = proto->handler(skb);
-        rcu_read_unlock();
-        return ret;
-
-drop_unlock:
-        rcu_read_unlock();
-drop:
-        kfree_skb(skb);
-        return NET_RX_DROP;
-}
-
-static void gre_err(struct sk_buff *skb, u32 info)
-{
-        const struct gre_protocol *proto;
-        const struct iphdr *iph = (const struct iphdr *)skb->data;
-        u8 ver = skb->data[(iph->ihl<<2) + 1]&0x7f;
-
-        if (ver >= GREPROTO_MAX)
-                return;
-
-        rcu_read_lock();
-        proto = rcu_dereference(gre_proto[ver]);
-        if (proto && proto->err_handler)
-                proto->err_handler(skb, info);
-        rcu_read_unlock();
-}
-
-static struct sk_buff *gre_gso_segment(struct sk_buff *skb,
-                                       netdev_features_t features)
-{
-        struct sk_buff *segs = ERR_PTR(-EINVAL);
-        netdev_features_t enc_features;
-        int ghl = GRE_HEADER_SECTION;
-        struct gre_base_hdr *greh;
-        int mac_len = skb->mac_len;
-        __be16 protocol = skb->protocol;
-        int tnl_hlen;
-        bool csum;
-
-        if (unlikely(skb_shinfo(skb)->gso_type &
-                                ~(SKB_GSO_TCPV4 |
-                                  SKB_GSO_TCPV6 |
-                                  SKB_GSO_UDP |
-                                  SKB_GSO_DODGY |
-                                  SKB_GSO_TCP_ECN |
-                                  SKB_GSO_GRE)))
-                goto out;
-
-        if (unlikely(!pskb_may_pull(skb, sizeof(*greh))))
-                goto out;
-
-        greh = (struct gre_base_hdr *)skb_transport_header(skb);
-
-        if (greh->flags & GRE_KEY)
-                ghl += GRE_HEADER_SECTION;
-        if (greh->flags & GRE_SEQ)
-                ghl += GRE_HEADER_SECTION;
-        if (greh->flags & GRE_CSUM) {
-                ghl += GRE_HEADER_SECTION;
-                csum = true;
-        } else
-                csum = false;
-
-        /* setup inner skb. */
-        skb->protocol = greh->protocol;
-        skb->encapsulation = 0;
-
-        if (unlikely(!pskb_may_pull(skb, ghl)))
-                goto out;
-        __skb_pull(skb, ghl);
-        skb_reset_mac_header(skb);
-        skb_set_network_header(skb, skb_inner_network_offset(skb));
-        skb->mac_len = skb_inner_network_offset(skb);
-
-        /* segment inner packet. */
-        enc_features = skb->dev->hw_enc_features & netif_skb_features(skb);
-        segs = skb_mac_gso_segment(skb, enc_features);
-        if (!segs || IS_ERR(segs))
-                goto out;
-
-        skb = segs;
-        tnl_hlen = skb_tnl_header_len(skb);
-        do {
-                __skb_push(skb, ghl);
-                if (csum) {
-                        __be32 *pcsum;
-
-                        if (skb_has_shared_frag(skb)) {
-                                int err;
-
-                                err = __skb_linearize(skb);
-                                if (err) {
-                                        kfree_skb_list(segs);
-                                        segs = ERR_PTR(err);
-                                        goto out;
-                                }
-                        }
-
-                        greh = (struct gre_base_hdr *)(skb->data);
-                        pcsum = (__be32 *)(greh + 1);
-                        *pcsum = 0;
-                        *(__sum16 *)pcsum = csum_fold(skb_checksum(skb, 0, skb->len, 0));
-                }
-                __skb_push(skb, tnl_hlen - ghl);
-
-                skb_reset_mac_header(skb);
-                skb_set_network_header(skb, mac_len);
-                skb->mac_len = mac_len;
-                skb->protocol = protocol;
-        } while ((skb = skb->next));
-out:
-        return segs;
-}
-
-static int gre_gso_send_check(struct sk_buff *skb)
-{
-        if (!skb->encapsulation)
-                return -EINVAL;
-        return 0;
-}
-
-static const struct net_protocol net_gre_protocol = {
-        .handler     = gre_rcv,
-        .err_handler = gre_err,
-        .netns_ok    = 1,
-};
-
-static const struct net_offload gre_offload = {
-        .callbacks = {
-                .gso_send_check =       gre_gso_send_check,
-                .gso_segment    =       gre_gso_segment,
-        },
-};
-
-static int __init gre_init(void)
-{
-        pr_info("GRE over IPv4 demultiplexor driver\n");
-
-        if (inet_add_protocol(&net_gre_protocol, IPPROTO_GRE) < 0) {
-                pr_err("can't add protocol\n");
-                return -EAGAIN;
-        }
-
-        if (inet_add_offload(&gre_offload, IPPROTO_GRE)) {
-                pr_err("can't add protocol offload\n");
-                inet_del_protocol(&net_gre_protocol, IPPROTO_GRE);
-                return -EAGAIN;
-        }
-
-        return 0;
-}
-
-static void __exit gre_exit(void)
-{
-        inet_del_offload(&gre_offload, IPPROTO_GRE);
-        inet_del_protocol(&net_gre_protocol, IPPROTO_GRE);
-}
-
-module_init(gre_init);
-module_exit(gre_exit);
-
-MODULE_DESCRIPTION("GRE over IPv4 demultiplexer driver");
-MODULE_AUTHOR("D. Kozlov (xeb@mail.ru)");
-MODULE_LICENSE("GPL");
-
diff --git a/net/ipv4/gre_demux.c b/net/ipv4/gre_demux.c
new file mode 100644
index 000000000000..736c9fc3ef93
--- /dev/null
+++ b/net/ipv4/gre_demux.c
@@ -0,0 +1,414 @@
+/*
+ *      GRE over IPv4 demultiplexer driver
+ *
+ *      Authors: Dmitry Kozlov (xeb@mail.ru)
+ *
+ *      This program is free software; you can redistribute it and/or
+ *      modify it under the terms of the GNU General Public License
+ *      as published by the Free Software Foundation; either version
+ *      2 of the License, or (at your option) any later version.
+ *
+ */
+
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
+#include <linux/module.h>
+#include <linux/if.h>
+#include <linux/icmp.h>
+#include <linux/kernel.h>
+#include <linux/kmod.h>
+#include <linux/skbuff.h>
+#include <linux/in.h>
+#include <linux/ip.h>
+#include <linux/netdevice.h>
+#include <linux/if_tunnel.h>
+#include <linux/spinlock.h>
+#include <net/protocol.h>
+#include <net/gre.h>
+
+#include <net/icmp.h>
+#include <net/route.h>
+#include <net/xfrm.h>
+
+static const struct gre_protocol __rcu *gre_proto[GREPROTO_MAX] __read_mostly;
+static struct gre_cisco_protocol __rcu *gre_cisco_proto_list[GRE_IP_PROTO_MAX];
+
+int gre_add_protocol(const struct gre_protocol *proto, u8 version)
+{
+        if (version >= GREPROTO_MAX)
+                return -EINVAL;
+
+        return (cmpxchg((const struct gre_protocol **)&gre_proto[version], NULL, proto) == NULL) ?
+                0 : -EBUSY;
+}
+EXPORT_SYMBOL_GPL(gre_add_protocol);
+
+int gre_del_protocol(const struct gre_protocol *proto, u8 version)
+{
+        int ret;
+
+        if (version >= GREPROTO_MAX)
+                return -EINVAL;
+
+        ret = (cmpxchg((const struct gre_protocol **)&gre_proto[version], proto, NULL) == proto) ?
+                0 : -EBUSY;
+
+        if (ret)
+                return ret;
+
+        synchronize_rcu();
+        return 0;
+}
+EXPORT_SYMBOL_GPL(gre_del_protocol);
+
+void gre_build_header(struct sk_buff *skb, const struct tnl_ptk_info *tpi,
+                      int hdr_len)
+{
+        struct gre_base_hdr *greh;
+
+        skb_push(skb, hdr_len);
+
+        greh = (struct gre_base_hdr *)skb->data;
+        greh->flags = tnl_flags_to_gre_flags(tpi->flags);
+        greh->protocol = tpi->proto;
+
+        if (tpi->flags&(TUNNEL_KEY|TUNNEL_CSUM|TUNNEL_SEQ)) {
+                __be32 *ptr = (__be32 *)(((u8 *)greh) + hdr_len - 4);
+
+                if (tpi->flags&TUNNEL_SEQ) {
+                        *ptr = tpi->seq;
+                        ptr--;
+                }
+                if (tpi->flags&TUNNEL_KEY) {
+                        *ptr = tpi->key;
+                        ptr--;
+                }
+                if (tpi->flags&TUNNEL_CSUM &&
+                    !(skb_shinfo(skb)->gso_type & SKB_GSO_GRE)) {
+                        *ptr = 0;
+                        *(__sum16 *)ptr = csum_fold(skb_checksum(skb, 0,
+                                                                 skb->len, 0));
+                }
+        }
+}
+EXPORT_SYMBOL_GPL(gre_build_header);
+
+struct sk_buff *gre_handle_offloads(struct sk_buff *skb, bool gre_csum)
+{
+        int err;
+
+        if (likely(!skb->encapsulation)) {
+                skb_reset_inner_headers(skb);
+                skb->encapsulation = 1;
+        }
+
+        if (skb_is_gso(skb)) {
+                err = skb_unclone(skb, GFP_ATOMIC);
+                if (unlikely(err))
+                        goto error;
+                skb_shinfo(skb)->gso_type |= SKB_GSO_GRE;
+                return skb;
+        } else if (skb->ip_summed == CHECKSUM_PARTIAL && gre_csum) {
+                err = skb_checksum_help(skb);
+                if (unlikely(err))
+                        goto error;
+        } else if (skb->ip_summed != CHECKSUM_PARTIAL)
+                skb->ip_summed = CHECKSUM_NONE;
+
+        return skb;
+error:
+        kfree_skb(skb);
+        return ERR_PTR(err);
+}
+EXPORT_SYMBOL_GPL(gre_handle_offloads);
+
+static __sum16 check_checksum(struct sk_buff *skb)
+{
+        __sum16 csum = 0;
+
+        switch (skb->ip_summed) {
+        case CHECKSUM_COMPLETE:
+                csum = csum_fold(skb->csum);
+
+                if (!csum)
+                        break;
+                /* Fall through. */
+
+        case CHECKSUM_NONE:
+                skb->csum = 0;
+                csum = __skb_checksum_complete(skb);
+                skb->ip_summed = CHECKSUM_COMPLETE;
+                break;
+        }
+
+        return csum;
+}
+
+static int parse_gre_header(struct sk_buff *skb, struct tnl_ptk_info *tpi,
+                            bool *csum_err)
+{
+        unsigned int ip_hlen = ip_hdrlen(skb);
+        const struct gre_base_hdr *greh;
+        __be32 *options;
+        int hdr_len;
+
+        if (unlikely(!pskb_may_pull(skb, sizeof(struct gre_base_hdr))))
+                return -EINVAL;
+
+        greh = (struct gre_base_hdr *)(skb_network_header(skb) + ip_hlen);
+        if (unlikely(greh->flags & (GRE_VERSION | GRE_ROUTING)))
+                return -EINVAL;
+
+        tpi->flags = gre_flags_to_tnl_flags(greh->flags);
+        hdr_len = ip_gre_calc_hlen(tpi->flags);
+
+        if (!pskb_may_pull(skb, hdr_len))
+                return -EINVAL;
+
+        greh = (struct gre_base_hdr *)(skb_network_header(skb) + ip_hlen);
+        tpi->proto = greh->protocol;
+
+        options = (__be32 *)(greh + 1);
+        if (greh->flags & GRE_CSUM) {
+                if (check_checksum(skb)) {
+                        *csum_err = true;
+                        return -EINVAL;
+                }
+                options++;
+        }
+
+        if (greh->flags & GRE_KEY) {
+                tpi->key = *options;
+                options++;
+        } else
+                tpi->key = 0;
+
+        if (unlikely(greh->flags & GRE_SEQ)) {
+                tpi->seq = *options;
+                options++;
+        } else
+                tpi->seq = 0;
+
+        /* WCCP version 1 and 2 protocol decoding.
+         * - Change protocol to IP
+         * - When dealing with WCCPv2, Skip extra 4 bytes in GRE header
+         */
+        if (greh->flags == 0 && tpi->proto == htons(ETH_P_WCCP)) {
+                tpi->proto = htons(ETH_P_IP);
+                if ((*(u8 *)options & 0xF0) != 0x40) {
+                        hdr_len += 4;
+                        if (!pskb_may_pull(skb, hdr_len))
+                                return -EINVAL;
+                }
+        }
+
+        return iptunnel_pull_header(skb, hdr_len, tpi->proto);
+}
+
+static int gre_cisco_rcv(struct sk_buff *skb)
+{
+        struct tnl_ptk_info tpi;
+        int i;
+        bool csum_err = false;
+
+        if (parse_gre_header(skb, &tpi, &csum_err) < 0)
+                goto drop;
+
+        rcu_read_lock();
+        for (i = 0; i < GRE_IP_PROTO_MAX; i++) {
+                struct gre_cisco_protocol *proto;
+                int ret;
+
+                proto = rcu_dereference(gre_cisco_proto_list[i]);
+                if (!proto)
+                        continue;
+                ret = proto->handler(skb, &tpi);
+                if (ret == PACKET_RCVD) {
+                        rcu_read_unlock();
+                        return 0;
+                }
+        }
+        rcu_read_unlock();
+
+        icmp_send(skb, ICMP_DEST_UNREACH, ICMP_PORT_UNREACH, 0);
+drop:
+        kfree_skb(skb);
+        return 0;
+}
+
+static void gre_cisco_err(struct sk_buff *skb, u32 info)
+{
+        /* All the routers (except for Linux) return only
+         * 8 bytes of packet payload. It means, that precise relaying of
+         * ICMP in the real Internet is absolutely infeasible.
+         *
+         * Moreover, Cisco "wise men" put GRE key to the third word
+         * in GRE header. It makes impossible maintaining even soft
+         * state for keyed
+         * GRE tunnels with enabled checksum. Tell them "thank you".
+         *
+         * Well, I wonder, rfc1812 was written by Cisco employee,
+         * what the hell these idiots break standards established
+         * by themselves???
+         */
+
+        const int type = icmp_hdr(skb)->type;
+        const int code = icmp_hdr(skb)->code;
+        struct tnl_ptk_info tpi;
+        bool csum_err = false;
+        int i;
+
+        if (parse_gre_header(skb, &tpi, &csum_err)) {
+                if (!csum_err)          /* ignore csum errors. */
+                        return;
+        }
+
+        if (type == ICMP_DEST_UNREACH && code == ICMP_FRAG_NEEDED) {
+                ipv4_update_pmtu(skb, dev_net(skb->dev), info,
+                                skb->dev->ifindex, 0, IPPROTO_GRE, 0);
+                return;
+        }
+        if (type == ICMP_REDIRECT) {
+                ipv4_redirect(skb, dev_net(skb->dev), skb->dev->ifindex, 0,
+                                IPPROTO_GRE, 0);
+                return;
+        }
+
+        rcu_read_lock();
+        for (i = 0; i < GRE_IP_PROTO_MAX; i++) {
+                struct gre_cisco_protocol *proto;
+
+                proto = rcu_dereference(gre_cisco_proto_list[i]);
+                if (!proto)
+                        continue;
+
+                if (proto->err_handler(skb, info, &tpi) == PACKET_RCVD)
+                        goto out;
+
+        }
+out:
+        rcu_read_unlock();
+}
+
+static int gre_rcv(struct sk_buff *skb)
+{
+        const struct gre_protocol *proto;
+        u8 ver;
+        int ret;
+
+        if (!pskb_may_pull(skb, 12))
+                goto drop;
+
+        ver = skb->data[1]&0x7f;
+        if (ver >= GREPROTO_MAX)
+                goto drop;
+
+        rcu_read_lock();
+        proto = rcu_dereference(gre_proto[ver]);
+        if (!proto || !proto->handler)
+                goto drop_unlock;
+        ret = proto->handler(skb);
+        rcu_read_unlock();
+        return ret;
+
+drop_unlock:
+        rcu_read_unlock();
+drop:
+        kfree_skb(skb);
+        return NET_RX_DROP;
+}
+
+static void gre_err(struct sk_buff *skb, u32 info)
+{
+        const struct gre_protocol *proto;
+        const struct iphdr *iph = (const struct iphdr *)skb->data;
+        u8 ver = skb->data[(iph->ihl<<2) + 1]&0x7f;
+
+        if (ver >= GREPROTO_MAX)
+                return;
+
+        rcu_read_lock();
+        proto = rcu_dereference(gre_proto[ver]);
+        if (proto && proto->err_handler)
+                proto->err_handler(skb, info);
+        rcu_read_unlock();
+}
+
+static const struct net_protocol net_gre_protocol = {
+        .handler     = gre_rcv,
+        .err_handler = gre_err,
+        .netns_ok    = 1,
+};
+
+static const struct gre_protocol ipgre_protocol = {
+        .handler     = gre_cisco_rcv,
+        .err_handler = gre_cisco_err,
+};
+
+int gre_cisco_register(struct gre_cisco_protocol *newp)
+{
+        struct gre_cisco_protocol **proto = (struct gre_cisco_protocol **)
+                                            &gre_cisco_proto_list[newp->priority];
+
+        return (cmpxchg(proto, NULL, newp) == NULL) ? 0 : -EBUSY;
+}
+EXPORT_SYMBOL_GPL(gre_cisco_register);
+
+int gre_cisco_unregister(struct gre_cisco_protocol *del_proto)
+{
+        struct gre_cisco_protocol **proto = (struct gre_cisco_protocol **)
+                                            &gre_cisco_proto_list[del_proto->priority];
+        int ret;
+
+        ret = (cmpxchg(proto, del_proto, NULL) == del_proto) ? 0 : -EINVAL;
+
+        if (ret)
+                return ret;
+
+        synchronize_net();
+        return 0;
+}
+EXPORT_SYMBOL_GPL(gre_cisco_unregister);
+
+static int __init gre_init(void)
+{
+        pr_info("GRE over IPv4 demultiplexor driver\n");
+
+        if (inet_add_protocol(&net_gre_protocol, IPPROTO_GRE) < 0) {
+                pr_err("can't add protocol\n");
+                goto err;
+        }
+
+        if (gre_add_protocol(&ipgre_protocol, GREPROTO_CISCO) < 0) {
+                pr_info("%s: can't add ipgre handler\n", __func__);
+                goto err_gre;
+        }
+
+        if (gre_offload_init()) {
+                pr_err("can't add protocol offload\n");
+                goto err_gso;
+        }
+
+        return 0;
+err_gso:
+        gre_del_protocol(&ipgre_protocol, GREPROTO_CISCO);
+err_gre:
+        inet_del_protocol(&net_gre_protocol, IPPROTO_GRE);
+err:
+        return -EAGAIN;
+}
+
+static void __exit gre_exit(void)
+{
+        gre_offload_exit();
+
+        gre_del_protocol(&ipgre_protocol, GREPROTO_CISCO);
+        inet_del_protocol(&net_gre_protocol, IPPROTO_GRE);
+}
+
+module_init(gre_init);
+module_exit(gre_exit);
+
+MODULE_DESCRIPTION("GRE over IPv4 demultiplexer driver");
+MODULE_AUTHOR("D. Kozlov (xeb@mail.ru)");
+MODULE_LICENSE("GPL");
diff --git a/net/ipv4/gre_offload.c b/net/ipv4/gre_offload.c
new file mode 100644
index 000000000000..775d5b532ece
--- /dev/null
+++ b/net/ipv4/gre_offload.c
@@ -0,0 +1,127 @@
+/*
+ *      IPV4 GSO/GRO offload support
+ *      Linux INET implementation
+ *
+ *      This program is free software; you can redistribute it and/or
+ *      modify it under the terms of the GNU General Public License
+ *      as published by the Free Software Foundation; either version
+ *      2 of the License, or (at your option) any later version.
+ *
+ *      GRE GSO support
+ */
+
+#include <linux/skbuff.h>
+#include <net/protocol.h>
+#include <net/gre.h>
+
+static int gre_gso_send_check(struct sk_buff *skb)
+{
+        if (!skb->encapsulation)
+                return -EINVAL;
+        return 0;
+}
+
+static struct sk_buff *gre_gso_segment(struct sk_buff *skb,
+                                       netdev_features_t features)
+{
+        struct sk_buff *segs = ERR_PTR(-EINVAL);
+        netdev_features_t enc_features;
+        int ghl = GRE_HEADER_SECTION;
+        struct gre_base_hdr *greh;
+        int mac_len = skb->mac_len;
+        __be16 protocol = skb->protocol;
+        int tnl_hlen;
+        bool csum;
+
+        if (unlikely(skb_shinfo(skb)->gso_type &
+                                ~(SKB_GSO_TCPV4 |
+                                  SKB_GSO_TCPV6 |
+                                  SKB_GSO_UDP |
+                                  SKB_GSO_DODGY |
+                                  SKB_GSO_TCP_ECN |
+                                  SKB_GSO_GRE)))
+                goto out;
+
+        if (unlikely(!pskb_may_pull(skb, sizeof(*greh))))
+                goto out;
+
+        greh = (struct gre_base_hdr *)skb_transport_header(skb);
+
+        if (greh->flags & GRE_KEY)
+                ghl += GRE_HEADER_SECTION;
+        if (greh->flags & GRE_SEQ)
+                ghl += GRE_HEADER_SECTION;
+        if (greh->flags & GRE_CSUM) {
+                ghl += GRE_HEADER_SECTION;
+                csum = true;
+        } else
+                csum = false;
+
+        /* setup inner skb. */
+        skb->protocol = greh->protocol;
+        skb->encapsulation = 0;
+
+        if (unlikely(!pskb_may_pull(skb, ghl)))
+                goto out;
+
+        __skb_pull(skb, ghl);
+        skb_reset_mac_header(skb);
+        skb_set_network_header(skb, skb_inner_network_offset(skb));
+        skb->mac_len = skb_inner_network_offset(skb);
+
+        /* segment inner packet. */
+        enc_features = skb->dev->hw_enc_features & netif_skb_features(skb);
+        segs = skb_mac_gso_segment(skb, enc_features);
+        if (!segs || IS_ERR(segs))
+                goto out;
+
+        skb = segs;
+        tnl_hlen = skb_tnl_header_len(skb);
+        do {
+                __skb_push(skb, ghl);
+                if (csum) {
+                        __be32 *pcsum;
+
+                        if (skb_has_shared_frag(skb)) {
+                                int err;
+
+                                err = __skb_linearize(skb);
+                                if (err) {
+                                        kfree_skb_list(segs);
+                                        segs = ERR_PTR(err);
+                                        goto out;
+                                }
+                        }
+
+                        greh = (struct gre_base_hdr *)(skb->data);
+                        pcsum = (__be32 *)(greh + 1);
+                        *pcsum = 0;
+                        *(__sum16 *)pcsum = csum_fold(skb_checksum(skb, 0, skb->len, 0));
+                }
+                __skb_push(skb, tnl_hlen - ghl);
+
+                skb_reset_mac_header(skb);
+                skb_set_network_header(skb, mac_len);
+                skb->mac_len = mac_len;
+                skb->protocol = protocol;
+        } while ((skb = skb->next));
+out:
+        return segs;
+}
+
+static const struct net_offload gre_offload = {
+        .callbacks = {
+                .gso_send_check = gre_gso_send_check,
+                .gso_segment = gre_gso_segment,
+        },
+};
+
+int __init gre_offload_init(void)
+{
+        return inet_add_offload(&gre_offload, IPPROTO_GRE);
+}
+
+void __exit gre_offload_exit(void)
+{
+        inet_del_offload(&gre_offload, IPPROTO_GRE);
+}
diff --git a/net/ipv4/icmp.c b/net/ipv4/icmp.c
index 76e10b47e053..5f7d11a45871 100644
--- a/net/ipv4/icmp.c
+++ b/net/ipv4/icmp.c
@@ -482,7 +482,7 @@ void icmp_send(struct sk_buff *skb_in, int type, int code, __be32 info)
 {
         struct iphdr *iph;
         int room;
-        struct icmp_bxm icmp_param;
+        struct icmp_bxm *icmp_param;
         struct rtable *rt = skb_rtable(skb_in);
         struct ipcm_cookie ipc;
         struct flowi4 fl4;
@@ -503,7 +503,8 @@ void icmp_send(struct sk_buff *skb_in, int type, int code, __be32 info)
         iph = ip_hdr(skb_in);
 
         if ((u8 *)iph < skb_in->head ||
-            (skb_in->network_header + sizeof(*iph)) > skb_in->tail)
+            (skb_network_header(skb_in) + sizeof(*iph)) >
+            skb_tail_pointer(skb_in))
                 goto out;
 
         /*
@@ -557,9 +558,13 @@ void icmp_send(struct sk_buff *skb_in, int type, int code, __be32 info)
                 }
         }
 
+        icmp_param = kmalloc(sizeof(*icmp_param), GFP_ATOMIC);
+        if (!icmp_param)
+                return;
+
         sk = icmp_xmit_lock(net);
         if (sk == NULL)
-                return;
+                goto out_free;
 
         /*
          *      Construct source address and options.
@@ -585,7 +590,7 @@ void icmp_send(struct sk_buff *skb_in, int type, int code, __be32 info)
                                            IPTOS_PREC_INTERNETCONTROL) :
                                           iph->tos;
 
-        if (ip_options_echo(&icmp_param.replyopts.opt.opt, skb_in))
+        if (ip_options_echo(&icmp_param->replyopts.opt.opt, skb_in))
                 goto out_unlock;
 
 
@@ -593,19 +598,19 @@ void icmp_send(struct sk_buff *skb_in, int type, int code, __be32 info)
          *      Prepare data for ICMP header.
          */
 
-        icmp_param.data.icmph.type       = type;
-        icmp_param.data.icmph.code       = code;
-        icmp_param.data.icmph.un.gateway = info;
-        icmp_param.data.icmph.checksum   = 0;
-        icmp_param.skb    = skb_in;
-        icmp_param.offset = skb_network_offset(skb_in);
+        icmp_param->data.icmph.type      = type;
+        icmp_param->data.icmph.code      = code;
+        icmp_param->data.icmph.un.gateway = info;
+        icmp_param->data.icmph.checksum  = 0;
+        icmp_param->skb   = skb_in;
+        icmp_param->offset = skb_network_offset(skb_in);
         inet_sk(sk)->tos = tos;
         ipc.addr = iph->saddr;
-        ipc.opt = &icmp_param.replyopts.opt;
+        ipc.opt = &icmp_param->replyopts.opt;
         ipc.tx_flags = 0;
 
         rt = icmp_route_lookup(net, &fl4, skb_in, iph, saddr, tos,
-                               type, code, &icmp_param);
+                               type, code, icmp_param);
         if (IS_ERR(rt))
                 goto out_unlock;
 
@@ -617,19 +622,21 @@ void icmp_send(struct sk_buff *skb_in, int type, int code, __be32 info)
         room = dst_mtu(&rt->dst);
         if (room > 576)
                 room = 576;
-        room -= sizeof(struct iphdr) + icmp_param.replyopts.opt.opt.optlen;
+        room -= sizeof(struct iphdr) + icmp_param->replyopts.opt.opt.optlen;
         room -= sizeof(struct icmphdr);
 
-        icmp_param.data_len = skb_in->len - icmp_param.offset;
-        if (icmp_param.data_len > room)
-                icmp_param.data_len = room;
-        icmp_param.head_len = sizeof(struct icmphdr);
+        icmp_param->data_len = skb_in->len - icmp_param->offset;
+        if (icmp_param->data_len > room)
+                icmp_param->data_len = room;
+        icmp_param->head_len = sizeof(struct icmphdr);
 
-        icmp_push_reply(&icmp_param, &fl4, &ipc, &rt);
+        icmp_push_reply(icmp_param, &fl4, &ipc, &rt);
 ende:
         ip_rt_put(rt);
 out_unlock:
         icmp_xmit_unlock(sk);
+out_free:
+        kfree(icmp_param);
 out:;
 }
 EXPORT_SYMBOL(icmp_send);
@@ -657,7 +664,8 @@ static void icmp_socket_deliver(struct sk_buff *skb, u32 info)
 }
 
 /*
- *      Handle ICMP_DEST_UNREACH, ICMP_TIME_EXCEED, and ICMP_QUENCH.
+ *      Handle ICMP_DEST_UNREACH, ICMP_TIME_EXCEED, ICMP_QUENCH, and
+ *      ICMP_PARAMETERPROB.
  */
 
 static void icmp_unreach(struct sk_buff *skb)
@@ -939,7 +947,8 @@ error:
 void icmp_err(struct sk_buff *skb, u32 info)
 {
         struct iphdr *iph = (struct iphdr *)skb->data;
-        struct icmphdr *icmph = (struct icmphdr *)(skb->data+(iph->ihl<<2));
+        int offset = iph->ihl<<2;
+        struct icmphdr *icmph = (struct icmphdr *)(skb->data + offset);
         int type = icmp_hdr(skb)->type;
         int code = icmp_hdr(skb)->code;
         struct net *net = dev_net(skb->dev);
@@ -949,7 +958,7 @@ void icmp_err(struct sk_buff *skb, u32 info)
          * triggered by ICMP_ECHOREPLY which sent from kernel.
          */
         if (icmph->type != ICMP_ECHOREPLY) {
-                ping_err(skb, info);
+                ping_err(skb, offset, info);
                 return;
         }
 
diff --git a/net/ipv4/igmp.c b/net/ipv4/igmp.c
index d8c232794bcb..cd71190d2962 100644
--- a/net/ipv4/igmp.c
+++ b/net/ipv4/igmp.c
@@ -363,7 +363,7 @@ static struct sk_buff *igmpv3_newpack(struct net_device *dev, int size)
 static int igmpv3_sendpack(struct sk_buff *skb)
 {
         struct igmphdr *pig = igmp_hdr(skb);
-        const int igmplen = skb->tail - skb->transport_header;
+        const int igmplen = skb_tail_pointer(skb) - skb_transport_header(skb);
 
         pig->csum = ip_compute_csum(igmp_hdr(skb), igmplen);
 
@@ -1217,6 +1217,57 @@ static void igmp_group_added(struct ip_mc_list *im)
  *      Multicast list managers
  */
 
+static u32 ip_mc_hash(const struct ip_mc_list *im)
+{
+        return hash_32((__force u32)im->multiaddr, MC_HASH_SZ_LOG);
+}
+
+static void ip_mc_hash_add(struct in_device *in_dev,
+                           struct ip_mc_list *im)
+{
+        struct ip_mc_list __rcu **mc_hash;
+        u32 hash;
+
+        mc_hash = rtnl_dereference(in_dev->mc_hash);
+        if (mc_hash) {
+                hash = ip_mc_hash(im);
+                im->next_hash = mc_hash[hash];
+                rcu_assign_pointer(mc_hash[hash], im);
+                return;
+        }
+
+        /* do not use a hash table for small number of items */
+        if (in_dev->mc_count < 4)
+                return;
+
+        mc_hash = kzalloc(sizeof(struct ip_mc_list *) << MC_HASH_SZ_LOG,
+                          GFP_KERNEL);
+        if (!mc_hash)
+                return;
+
+        for_each_pmc_rtnl(in_dev, im) {
+                hash = ip_mc_hash(im);
+                im->next_hash = mc_hash[hash];
+                RCU_INIT_POINTER(mc_hash[hash], im);
+        }
+
+        rcu_assign_pointer(in_dev->mc_hash, mc_hash);
+}
+
+static void ip_mc_hash_remove(struct in_device *in_dev,
+                              struct ip_mc_list *im)
+{
+        struct ip_mc_list __rcu **mc_hash = rtnl_dereference(in_dev->mc_hash);
+        struct ip_mc_list *aux;
+
+        if (!mc_hash)
+                return;
+        mc_hash += ip_mc_hash(im);
+        while ((aux = rtnl_dereference(*mc_hash)) != im)
+                mc_hash = &aux->next_hash;
+        *mc_hash = im->next_hash;
+}
+
 
 /*
  *      A socket has joined a multicast group on device dev.
@@ -1258,6 +1309,8 @@ void ip_mc_inc_group(struct in_device *in_dev, __be32 addr)
         in_dev->mc_count++;
         rcu_assign_pointer(in_dev->mc_list, im);
 
+        ip_mc_hash_add(in_dev, im);
+
 #ifdef CONFIG_IP_MULTICAST
         igmpv3_del_delrec(in_dev, im->multiaddr);
 #endif
@@ -1314,6 +1367,7 @@ void ip_mc_dec_group(struct in_device *in_dev, __be32 addr)
              ip = &i->next_rcu) {
                 if (i->multiaddr == addr) {
                         if (--i->users == 0) {
+                                ip_mc_hash_remove(in_dev, i);
                                 *ip = i->next_rcu;
                                 in_dev->mc_count--;
                                 igmp_group_dropped(i);
@@ -1381,13 +1435,9 @@ void ip_mc_init_dev(struct in_device *in_dev)
 {
         ASSERT_RTNL();
 
-        in_dev->mc_tomb = NULL;
 #ifdef CONFIG_IP_MULTICAST
-        in_dev->mr_gq_running = 0;
         setup_timer(&in_dev->mr_gq_timer, igmp_gq_timer_expire,
                         (unsigned long)in_dev);
-        in_dev->mr_ifc_count = 0;
-        in_dev->mc_count     = 0;
         setup_timer(&in_dev->mr_ifc_timer, igmp_ifc_timer_expire,
                         (unsigned long)in_dev);
         in_dev->mr_qrv = IGMP_Unsolicited_Report_Count;
@@ -2321,12 +2371,25 @@ void ip_mc_drop_socket(struct sock *sk)
 int ip_check_mc_rcu(struct in_device *in_dev, __be32 mc_addr, __be32 src_addr, u16 proto)
 {
         struct ip_mc_list *im;
+        struct ip_mc_list __rcu **mc_hash;
         struct ip_sf_list *psf;
         int rv = 0;
 
-        for_each_pmc_rcu(in_dev, im) {
-                if (im->multiaddr == mc_addr)
-                        break;
+        mc_hash = rcu_dereference(in_dev->mc_hash);
+        if (mc_hash) {
+                u32 hash = hash_32((__force u32)mc_addr, MC_HASH_SZ_LOG);
+
+                for (im = rcu_dereference(mc_hash[hash]);
+                     im != NULL;
+                     im = rcu_dereference(im->next_hash)) {
+                        if (im->multiaddr == mc_addr)
+                                break;
+                }
+        } else {
+                for_each_pmc_rcu(in_dev, im) {
+                        if (im->multiaddr == mc_addr)
+                                break;
+                }
         }
         if (im && proto == IPPROTO_IGMP) {
                 rv = 1;
diff --git a/net/ipv4/inet_fragment.c b/net/ipv4/inet_fragment.c
index 7e06641e36ae..c5313a9c019b 100644
--- a/net/ipv4/inet_fragment.c
+++ b/net/ipv4/inet_fragment.c
@@ -93,7 +93,7 @@ void inet_frags_init(struct inet_frags *f)
         }
         rwlock_init(&f->lock);
 
-        f->rnd = (u32) ((num_physpages ^ (num_physpages>>7)) ^
+        f->rnd = (u32) ((totalram_pages ^ (totalram_pages >> 7)) ^
                                    (jiffies ^ (jiffies >> 6)));
 
         setup_timer(&f->secret_timer, inet_frag_secret_rebuild,
@@ -247,8 +247,6 @@ static struct inet_frag_queue *inet_frag_intern(struct netns_frags *nf,
 {
         struct inet_frag_bucket *hb;
         struct inet_frag_queue *qp;
-#ifdef CONFIG_SMP
-#endif
         unsigned int hash;
 
         read_lock(&f->lock); /* Protects against hash rebuild */
diff --git a/net/ipv4/ip_gre.c b/net/ipv4/ip_gre.c
index 2a83591492dd..1f6eab66f7ce 100644
--- a/net/ipv4/ip_gre.c
+++ b/net/ipv4/ip_gre.c
@@ -121,103 +121,8 @@ static int ipgre_tunnel_init(struct net_device *dev);
 static int ipgre_net_id __read_mostly;
 static int gre_tap_net_id __read_mostly;
 
-static __sum16 check_checksum(struct sk_buff *skb)
-{
-        __sum16 csum = 0;
-
-        switch (skb->ip_summed) {
-        case CHECKSUM_COMPLETE:
-                csum = csum_fold(skb->csum);
-
-                if (!csum)
-                        break;
-                /* Fall through. */
-
-        case CHECKSUM_NONE:
-                skb->csum = 0;
-                csum = __skb_checksum_complete(skb);
-                skb->ip_summed = CHECKSUM_COMPLETE;
-                break;
-        }
-
-        return csum;
-}
-
-static int ip_gre_calc_hlen(__be16 o_flags)
-{
-        int addend = 4;
-
-        if (o_flags&TUNNEL_CSUM)
-                addend += 4;
-        if (o_flags&TUNNEL_KEY)
-                addend += 4;
-        if (o_flags&TUNNEL_SEQ)
-                addend += 4;
-        return addend;
-}
-
-static int parse_gre_header(struct sk_buff *skb, struct tnl_ptk_info *tpi,
-                            bool *csum_err, int *hdr_len)
-{
-        unsigned int ip_hlen = ip_hdrlen(skb);
-        const struct gre_base_hdr *greh;
-        __be32 *options;
-
-        if (unlikely(!pskb_may_pull(skb, sizeof(struct gre_base_hdr))))
-                return -EINVAL;
-
-        greh = (struct gre_base_hdr *)(skb_network_header(skb) + ip_hlen);
-        if (unlikely(greh->flags & (GRE_VERSION | GRE_ROUTING)))
-                return -EINVAL;
-
-        tpi->flags = gre_flags_to_tnl_flags(greh->flags);
-        *hdr_len = ip_gre_calc_hlen(tpi->flags);
-
-        if (!pskb_may_pull(skb, *hdr_len))
-                return -EINVAL;
-
-        greh = (struct gre_base_hdr *)(skb_network_header(skb) + ip_hlen);
-
-        tpi->proto = greh->protocol;
-
-        options = (__be32 *)(greh + 1);
-        if (greh->flags & GRE_CSUM) {
-                if (check_checksum(skb)) {
-                        *csum_err = true;
-                        return -EINVAL;
-                }
-                options++;
-        }
-
-        if (greh->flags & GRE_KEY) {
-                tpi->key = *options;
-                options++;
-        } else
-                tpi->key = 0;
-
-        if (unlikely(greh->flags & GRE_SEQ)) {
-                tpi->seq = *options;
-                options++;
-        } else
-                tpi->seq = 0;
-
-        /* WCCP version 1 and 2 protocol decoding.
-         * - Change protocol to IP
-         * - When dealing with WCCPv2, Skip extra 4 bytes in GRE header
-         */
-        if (greh->flags == 0 && tpi->proto == htons(ETH_P_WCCP)) {
-                tpi->proto = htons(ETH_P_IP);
-                if ((*(u8 *)options & 0xF0) != 0x40) {
-                        *hdr_len += 4;
-                        if (!pskb_may_pull(skb, *hdr_len))
-                                return -EINVAL;
-                }
-        }
-
-        return 0;
-}
-
-static void ipgre_err(struct sk_buff *skb, u32 info)
+static int ipgre_err(struct sk_buff *skb, u32 info,
+                     const struct tnl_ptk_info *tpi)
 {
 
         /* All the routers (except for Linux) return only
@@ -239,26 +144,18 @@ static void ipgre_err(struct sk_buff *skb, u32 info)
         const int type = icmp_hdr(skb)->type;
         const int code = icmp_hdr(skb)->code;
         struct ip_tunnel *t;
-        struct tnl_ptk_info tpi;
-        int hdr_len;
-        bool csum_err = false;
-
-        if (parse_gre_header(skb, &tpi, &csum_err, &hdr_len)) {
-                if (!csum_err)          /* ignore csum errors. */
-                        return;
-        }
 
         switch (type) {
         default:
         case ICMP_PARAMETERPROB:
-                return;
+                return PACKET_RCVD;
 
         case ICMP_DEST_UNREACH:
                 switch (code) {
                 case ICMP_SR_FAILED:
                 case ICMP_PORT_UNREACH:
                         /* Impossible event. */
-                        return;
+                        return PACKET_RCVD;
                 default:
                         /* All others are translated to HOST_UNREACH.
                            rfc2003 contains "deep thoughts" about NET_UNREACH,
@@ -269,138 +166,61 @@ static void ipgre_err(struct sk_buff *skb, u32 info)
                 break;
         case ICMP_TIME_EXCEEDED:
                 if (code != ICMP_EXC_TTL)
-                        return;
+                        return PACKET_RCVD;
                 break;
 
         case ICMP_REDIRECT:
                 break;
         }
 
-        if (tpi.proto == htons(ETH_P_TEB))
+        if (tpi->proto == htons(ETH_P_TEB))
                 itn = net_generic(net, gre_tap_net_id);
         else
                 itn = net_generic(net, ipgre_net_id);
 
         iph = (const struct iphdr *)skb->data;
-        t = ip_tunnel_lookup(itn, skb->dev->ifindex, tpi.flags,
-                             iph->daddr, iph->saddr, tpi.key);
+        t = ip_tunnel_lookup(itn, skb->dev->ifindex, tpi->flags,
+                             iph->daddr, iph->saddr, tpi->key);
 
         if (t == NULL)
-                return;
+                return PACKET_REJECT;
 
-        if (type == ICMP_DEST_UNREACH && code == ICMP_FRAG_NEEDED) {
-                ipv4_update_pmtu(skb, dev_net(skb->dev), info,
-                                 t->parms.link, 0, IPPROTO_GRE, 0);
-                return;
-        }
-        if (type == ICMP_REDIRECT) {
-                ipv4_redirect(skb, dev_net(skb->dev), t->parms.link, 0,
-                              IPPROTO_GRE, 0);
-                return;
-        }
         if (t->parms.iph.daddr == 0 ||
             ipv4_is_multicast(t->parms.iph.daddr))
-                return;
+                return PACKET_RCVD;
 
         if (t->parms.iph.ttl == 0 && type == ICMP_TIME_EXCEEDED)
-                return;
+                return PACKET_RCVD;
 
         if (time_before(jiffies, t->err_time + IPTUNNEL_ERR_TIMEO))
                 t->err_count++;
         else
                 t->err_count = 1;
         t->err_time = jiffies;
+        return PACKET_RCVD;
 }
 
-static int ipgre_rcv(struct sk_buff *skb)
+static int ipgre_rcv(struct sk_buff *skb, const struct tnl_ptk_info *tpi)
 {
         struct net *net = dev_net(skb->dev);
         struct ip_tunnel_net *itn;
         const struct iphdr *iph;
         struct ip_tunnel *tunnel;
-        struct tnl_ptk_info tpi;
-        int hdr_len;
-        bool csum_err = false;
-
-        if (parse_gre_header(skb, &tpi, &csum_err, &hdr_len) < 0)
-                goto drop;
 
-        if (tpi.proto == htons(ETH_P_TEB))
+        if (tpi->proto == htons(ETH_P_TEB))
                 itn = net_generic(net, gre_tap_net_id);
         else
                 itn = net_generic(net, ipgre_net_id);
 
         iph = ip_hdr(skb);
-        tunnel = ip_tunnel_lookup(itn, skb->dev->ifindex, tpi.flags,
-                                  iph->saddr, iph->daddr, tpi.key);
+        tunnel = ip_tunnel_lookup(itn, skb->dev->ifindex, tpi->flags,
+                                  iph->saddr, iph->daddr, tpi->key);
 
         if (tunnel) {
-                ip_tunnel_rcv(tunnel, skb, &tpi, log_ecn_error);
-                return 0;
-        }
-        icmp_send(skb, ICMP_DEST_UNREACH, ICMP_PORT_UNREACH, 0);
-drop:
-        kfree_skb(skb);
-        return 0;
-}
-
-static struct sk_buff *handle_offloads(struct ip_tunnel *tunnel, struct sk_buff *skb)
-{
-        int err;
-
-        if (skb_is_gso(skb)) {
-                err = skb_unclone(skb, GFP_ATOMIC);
-                if (unlikely(err))
-                        goto error;
-                skb_shinfo(skb)->gso_type |= SKB_GSO_GRE;
-                return skb;
-        } else if (skb->ip_summed == CHECKSUM_PARTIAL &&
-                   tunnel->parms.o_flags&TUNNEL_CSUM) {
-                err = skb_checksum_help(skb);
-                if (unlikely(err))
-                        goto error;
-        } else if (skb->ip_summed != CHECKSUM_PARTIAL)
-                skb->ip_summed = CHECKSUM_NONE;
-
-        return skb;
-
-error:
-        kfree_skb(skb);
-        return ERR_PTR(err);
-}
-
-static struct sk_buff *gre_build_header(struct sk_buff *skb,
-                                        const struct tnl_ptk_info *tpi,
-                                        int hdr_len)
-{
-        struct gre_base_hdr *greh;
-
-        skb_push(skb, hdr_len);
-
-        greh = (struct gre_base_hdr *)skb->data;
-        greh->flags = tnl_flags_to_gre_flags(tpi->flags);
-        greh->protocol = tpi->proto;
-
-        if (tpi->flags&(TUNNEL_KEY|TUNNEL_CSUM|TUNNEL_SEQ)) {
-                __be32 *ptr = (__be32 *)(((u8 *)greh) + hdr_len - 4);
-
-                if (tpi->flags&TUNNEL_SEQ) {
-                        *ptr = tpi->seq;
-                        ptr--;
-                }
-                if (tpi->flags&TUNNEL_KEY) {
-                        *ptr = tpi->key;
-                        ptr--;
-                }
-                if (tpi->flags&TUNNEL_CSUM &&
-                    !(skb_shinfo(skb)->gso_type & SKB_GSO_GRE)) {
-                        *(__sum16 *)ptr = 0;
-                        *(__sum16 *)ptr = csum_fold(skb_checksum(skb, 0,
-                                                                 skb->len, 0));
-                }
+                ip_tunnel_rcv(tunnel, skb, tpi, log_ecn_error);
+                return PACKET_RCVD;
         }
-
-        return skb;
+        return PACKET_REJECT;
 }
 
 static void __gre_xmit(struct sk_buff *skb, struct net_device *dev,
@@ -410,11 +230,6 @@ static void __gre_xmit(struct sk_buff *skb, struct net_device *dev,
         struct ip_tunnel *tunnel = netdev_priv(dev);
         struct tnl_ptk_info tpi;
 
-        if (likely(!skb->encapsulation)) {
-                skb_reset_inner_headers(skb);
-                skb->encapsulation = 1;
-        }
-
         tpi.flags = tunnel->parms.o_flags;
         tpi.proto = proto;
         tpi.key = tunnel->parms.o_key;
@@ -423,13 +238,9 @@ static void __gre_xmit(struct sk_buff *skb, struct net_device *dev,
         tpi.seq = htonl(tunnel->o_seqno);
 
         /* Push GRE header. */
-        skb = gre_build_header(skb, &tpi, tunnel->hlen);
-        if (unlikely(!skb)) {
-                dev->stats.tx_dropped++;
-                return;
-        }
+        gre_build_header(skb, &tpi, tunnel->hlen);
 
-        ip_tunnel_xmit(skb, dev, tnl_params);
+        ip_tunnel_xmit(skb, dev, tnl_params, tnl_params->protocol);
 }
 
 static netdev_tx_t ipgre_xmit(struct sk_buff *skb,
@@ -438,7 +249,7 @@ static netdev_tx_t ipgre_xmit(struct sk_buff *skb,
         struct ip_tunnel *tunnel = netdev_priv(dev);
         const struct iphdr *tnl_params;
 
-        skb = handle_offloads(tunnel, skb);
+        skb = gre_handle_offloads(skb, !!(tunnel->parms.o_flags&TUNNEL_CSUM));
         if (IS_ERR(skb))
                 goto out;
 
@@ -477,7 +288,7 @@ static netdev_tx_t gre_tap_xmit(struct sk_buff *skb,
 {
         struct ip_tunnel *tunnel = netdev_priv(dev);
 
-        skb = handle_offloads(tunnel, skb);
+        skb = gre_handle_offloads(skb, !!(tunnel->parms.o_flags&TUNNEL_CSUM));
         if (IS_ERR(skb))
                 goto out;
 
@@ -503,10 +314,11 @@ static int ipgre_tunnel_ioctl(struct net_device *dev,
 
         if (copy_from_user(&p, ifr->ifr_ifru.ifru_data, sizeof(p)))
                 return -EFAULT;
-        if (p.iph.version != 4 || p.iph.protocol != IPPROTO_GRE ||
-            p.iph.ihl != 5 || (p.iph.frag_off&htons(~IP_DF)) ||
-            ((p.i_flags|p.o_flags)&(GRE_VERSION|GRE_ROUTING))) {
-                return -EINVAL;
+        if (cmd == SIOCADDTUNNEL || cmd == SIOCCHGTUNNEL) {
+                if (p.iph.version != 4 || p.iph.protocol != IPPROTO_GRE ||
+                    p.iph.ihl != 5 || (p.iph.frag_off&htons(~IP_DF)) ||
+                    ((p.i_flags|p.o_flags)&(GRE_VERSION|GRE_ROUTING)))
+                        return -EINVAL;
         }
         p.i_flags = gre_flags_to_tnl_flags(p.i_flags);
         p.o_flags = gre_flags_to_tnl_flags(p.o_flags);
@@ -708,9 +520,10 @@ static int ipgre_tunnel_init(struct net_device *dev)
         return ip_tunnel_init(dev);
 }
 
-static const struct gre_protocol ipgre_protocol = {
-        .handler     = ipgre_rcv,
-        .err_handler = ipgre_err,
+static struct gre_cisco_protocol ipgre_protocol = {
+        .handler        = ipgre_rcv,
+        .err_handler    = ipgre_err,
+        .priority       = 0,
 };
 
 static int __net_init ipgre_init_net(struct net *net)
@@ -978,7 +791,7 @@ static int __init ipgre_init(void)
         if (err < 0)
                 goto pnet_tap_faied;
 
-        err = gre_add_protocol(&ipgre_protocol, GREPROTO_CISCO);
+        err = gre_cisco_register(&ipgre_protocol);
         if (err < 0) {
                 pr_info("%s: can't add protocol\n", __func__);
                 goto add_proto_failed;
@@ -997,7 +810,7 @@ static int __init ipgre_init(void)
 tap_ops_failed:
         rtnl_link_unregister(&ipgre_link_ops);
 rtnl_link_failed:
-        gre_del_protocol(&ipgre_protocol, GREPROTO_CISCO);
+        gre_cisco_unregister(&ipgre_protocol);
 add_proto_failed:
         unregister_pernet_device(&ipgre_tap_net_ops);
 pnet_tap_faied:
@@ -1009,8 +822,7 @@ static void __exit ipgre_fini(void)
 {
         rtnl_link_unregister(&ipgre_tap_ops);
         rtnl_link_unregister(&ipgre_link_ops);
-        if (gre_del_protocol(&ipgre_protocol, GREPROTO_CISCO) < 0)
-                pr_info("%s: can't remove protocol\n", __func__);
+        gre_cisco_unregister(&ipgre_protocol);
         unregister_pernet_device(&ipgre_tap_net_ops);
         unregister_pernet_device(&ipgre_net_ops);
 }
diff --git a/net/ipv4/ip_tunnel.c b/net/ipv4/ip_tunnel.c
index 7fa8f08fa7ae..945734b2f209 100644
--- a/net/ipv4/ip_tunnel.c
+++ b/net/ipv4/ip_tunnel.c
@@ -304,6 +304,7 @@ static struct net_device *__ip_tunnel_create(struct net *net,
 
         tunnel = netdev_priv(dev);
         tunnel->parms = *parms;
+        tunnel->net = net;
 
         err = register_netdevice(dev);
         if (err)
@@ -408,13 +409,6 @@ int ip_tunnel_rcv(struct ip_tunnel *tunnel, struct sk_buff *skb,
         const struct iphdr *iph = ip_hdr(skb);
         int err;
 
-        secpath_reset(skb);
-
-        skb->protocol = tpi->proto;
-
-        skb->mac_header = skb->network_header;
-        __pskb_pull(skb, tunnel->hlen);
-        skb_postpull_rcsum(skb, skb_transport_header(skb), tunnel->hlen);
 #ifdef CONFIG_NET_IPGRE_BROADCAST
         if (ipv4_is_multicast(iph->daddr)) {
                 /* Looped back packet, drop it! */
@@ -442,23 +436,6 @@ int ip_tunnel_rcv(struct ip_tunnel *tunnel, struct sk_buff *skb,
                 tunnel->i_seqno = ntohl(tpi->seq) + 1;
         }
 
-        /* Warning: All skb pointers will be invalidated! */
-        if (tunnel->dev->type == ARPHRD_ETHER) {
-                if (!pskb_may_pull(skb, ETH_HLEN)) {
-                        tunnel->dev->stats.rx_length_errors++;
-                        tunnel->dev->stats.rx_errors++;
-                        goto drop;
-                }
-
-                iph = ip_hdr(skb);
-                skb->protocol = eth_type_trans(skb, tunnel->dev);
-                skb_postpull_rcsum(skb, eth_hdr(skb), ETH_HLEN);
-        }
-
-        skb->pkt_type = PACKET_HOST;
-        __skb_tunnel_rx(skb, tunnel->dev);
-
-        skb_reset_network_header(skb);
         err = IP_ECN_decapsulate(iph, skb);
         if (unlikely(err)) {
                 if (log_ecn_error)
@@ -477,6 +454,15 @@ int ip_tunnel_rcv(struct ip_tunnel *tunnel, struct sk_buff *skb,
         tstats->rx_bytes += skb->len;
         u64_stats_update_end(&tstats->syncp);
 
+        if (tunnel->net != dev_net(tunnel->dev))
+                skb_scrub_packet(skb);
+
+        if (tunnel->dev->type == ARPHRD_ETHER) {
+                skb->protocol = eth_type_trans(skb, tunnel->dev);
+                skb_postpull_rcsum(skb, eth_hdr(skb), ETH_HLEN);
+        } else {
+                skb->dev = tunnel->dev;
+        }
         gro_cells_receive(&tunnel->gro_cells, skb);
         return 0;
 
@@ -486,24 +472,69 @@ drop:
 }
 EXPORT_SYMBOL_GPL(ip_tunnel_rcv);
 
+static int tnl_update_pmtu(struct net_device *dev, struct sk_buff *skb,
+                            struct rtable *rt, __be16 df)
+{
+        struct ip_tunnel *tunnel = netdev_priv(dev);
+        int pkt_size = skb->len - tunnel->hlen;
+        int mtu;
+
+        if (df)
+                mtu = dst_mtu(&rt->dst) - dev->hard_header_len
+                                        - sizeof(struct iphdr) - tunnel->hlen;
+        else
+                mtu = skb_dst(skb) ? dst_mtu(skb_dst(skb)) : dev->mtu;
+
+        if (skb_dst(skb))
+                skb_dst(skb)->ops->update_pmtu(skb_dst(skb), NULL, skb, mtu);
+
+        if (skb->protocol == htons(ETH_P_IP)) {
+                if (!skb_is_gso(skb) &&
+                    (df & htons(IP_DF)) && mtu < pkt_size) {
+                        memset(IPCB(skb), 0, sizeof(*IPCB(skb)));
+                        icmp_send(skb, ICMP_DEST_UNREACH, ICMP_FRAG_NEEDED, htonl(mtu));
+                        return -E2BIG;
+                }
+        }
+#if IS_ENABLED(CONFIG_IPV6)
+        else if (skb->protocol == htons(ETH_P_IPV6)) {
+                struct rt6_info *rt6 = (struct rt6_info *)skb_dst(skb);
+
+                if (rt6 && mtu < dst_mtu(skb_dst(skb)) &&
+                           mtu >= IPV6_MIN_MTU) {
+                        if ((tunnel->parms.iph.daddr &&
+                            !ipv4_is_multicast(tunnel->parms.iph.daddr)) ||
+                            rt6->rt6i_dst.plen == 128) {
+                                rt6->rt6i_flags |= RTF_MODIFIED;
+                                dst_metric_set(skb_dst(skb), RTAX_MTU, mtu);
+                        }
+                }
+
+                if (!skb_is_gso(skb) && mtu >= IPV6_MIN_MTU &&
+                                        mtu < pkt_size) {
+                        icmpv6_send(skb, ICMPV6_PKT_TOOBIG, 0, mtu);
+                        return -E2BIG;
+                }
+        }
+#endif
+        return 0;
+}
+
 void ip_tunnel_xmit(struct sk_buff *skb, struct net_device *dev,
-                    const struct iphdr *tnl_params)
+                    const struct iphdr *tnl_params, const u8 protocol)
 {
         struct ip_tunnel *tunnel = netdev_priv(dev);
         const struct iphdr *inner_iph;
-        struct iphdr *iph;
         struct flowi4 fl4;
         u8     tos, ttl;
         __be16 df;
         struct rtable *rt;              /* Route to the other host */
-        struct net_device *tdev;        /* Device to other host */
         unsigned int max_headroom;      /* The extra header space needed */
         __be32 dst;
-        int mtu;
+        int err;
 
         inner_iph = (const struct iphdr *)skb_inner_network_header(skb);
 
-        memset(IPCB(skb), 0, sizeof(*IPCB(skb)));
         dst = tnl_params->daddr;
         if (dst == 0) {
                 /* NBMA tunnel */
@@ -561,8 +592,8 @@ void ip_tunnel_xmit(struct sk_buff *skb, struct net_device *dev,
                         tos = ipv6_get_dsfield((const struct ipv6hdr *)inner_iph);
         }
 
-        rt = ip_route_output_tunnel(dev_net(dev), &fl4,
-                                    tunnel->parms.iph.protocol,
+        rt = ip_route_output_tunnel(tunnel->net, &fl4,
+                                    protocol,
                                     dst, tnl_params->saddr,
                                     tunnel->parms.o_key,
                                     RT_TOS(tos),
@@ -571,58 +602,19 @@ void ip_tunnel_xmit(struct sk_buff *skb, struct net_device *dev,
                 dev->stats.tx_carrier_errors++;
                 goto tx_error;
         }
-        tdev = rt->dst.dev;
-
-        if (tdev == dev) {
+        if (rt->dst.dev == dev) {
                 ip_rt_put(rt);
                 dev->stats.collisions++;
                 goto tx_error;
         }
 
-        df = tnl_params->frag_off;
-
-        if (df)
-                mtu = dst_mtu(&rt->dst) - dev->hard_header_len
-                                        - sizeof(struct iphdr);
-        else
-                mtu = skb_dst(skb) ? dst_mtu(skb_dst(skb)) : dev->mtu;
-
-        if (skb_dst(skb))
-                skb_dst(skb)->ops->update_pmtu(skb_dst(skb), NULL, skb, mtu);
-
-        if (skb->protocol == htons(ETH_P_IP)) {
-                df |= (inner_iph->frag_off&htons(IP_DF));
-
-                if (!skb_is_gso(skb) &&
-                    (inner_iph->frag_off&htons(IP_DF)) &&
-                     mtu < ntohs(inner_iph->tot_len)) {
-                        icmp_send(skb, ICMP_DEST_UNREACH, ICMP_FRAG_NEEDED, htonl(mtu));
-                        ip_rt_put(rt);
-                        goto tx_error;
-                }
+        if (tnl_update_pmtu(dev, skb, rt, tnl_params->frag_off)) {
+                ip_rt_put(rt);
+                goto tx_error;
         }
-#if IS_ENABLED(CONFIG_IPV6)
-        else if (skb->protocol == htons(ETH_P_IPV6)) {
-                struct rt6_info *rt6 = (struct rt6_info *)skb_dst(skb);
-
-                if (rt6 && mtu < dst_mtu(skb_dst(skb)) &&
-                    mtu >= IPV6_MIN_MTU) {
-                        if ((tunnel->parms.iph.daddr &&
-                            !ipv4_is_multicast(tunnel->parms.iph.daddr)) ||
-                            rt6->rt6i_dst.plen == 128) {
-                                rt6->rt6i_flags |= RTF_MODIFIED;
-                                dst_metric_set(skb_dst(skb), RTAX_MTU, mtu);
-                        }
-                }
 
-                if (!skb_is_gso(skb) && mtu >= IPV6_MIN_MTU &&
-                    mtu < skb->len) {
-                        icmpv6_send(skb, ICMPV6_PKT_TOOBIG, 0, mtu);
-                        ip_rt_put(rt);
-                        goto tx_error;
-                }
-        }
-#endif
+        if (tunnel->net != dev_net(dev))
+                skb_scrub_packet(skb);
 
         if (tunnel->err_count > 0) {
                 if (time_before(jiffies,
@@ -646,8 +638,12 @@ void ip_tunnel_xmit(struct sk_buff *skb, struct net_device *dev,
                         ttl = ip4_dst_hoplimit(&rt->dst);
         }
 
-        max_headroom = LL_RESERVED_SPACE(tdev) + sizeof(struct iphdr)
-                                               + rt->dst.header_len;
+        df = tnl_params->frag_off;
+        if (skb->protocol == htons(ETH_P_IP))
+                df |= (inner_iph->frag_off&htons(IP_DF));
+
+        max_headroom = LL_RESERVED_SPACE(rt->dst.dev) + sizeof(struct iphdr)
+                        + rt->dst.header_len;
         if (max_headroom > dev->needed_headroom) {
                 dev->needed_headroom = max_headroom;
                 if (skb_cow_head(skb, dev->needed_headroom)) {
@@ -657,27 +653,11 @@ void ip_tunnel_xmit(struct sk_buff *skb, struct net_device *dev,
                 }
         }
 
-        skb_dst_drop(skb);
-        skb_dst_set(skb, &rt->dst);
-
-        /* Push down and install the IP header. */
-        skb_push(skb, sizeof(struct iphdr));
-        skb_reset_network_header(skb);
-
-        iph = ip_hdr(skb);
-        inner_iph = (const struct iphdr *)skb_inner_network_header(skb);
+        err = iptunnel_xmit(dev_net(dev), rt, skb,
+                            fl4.saddr, fl4.daddr, protocol,
+                            ip_tunnel_ecn_encap(tos, inner_iph, skb), ttl, df);
+        iptunnel_xmit_stats(err, &dev->stats, dev->tstats);
 
-        iph->version    =       4;
-        iph->ihl        =       sizeof(struct iphdr) >> 2;
-        iph->frag_off   =       df;
-        iph->protocol   =       tnl_params->protocol;
-        iph->tos        =       ip_tunnel_ecn_encap(tos, inner_iph, skb);
-        iph->daddr      =       fl4.daddr;
-        iph->saddr      =       fl4.saddr;
-        iph->ttl        =       ttl;
-        tunnel_ip_select_ident(skb, inner_iph, &rt->dst);
-
-        iptunnel_xmit(skb, dev);
         return;
 
 #if IS_ENABLED(CONFIG_IPV6)
@@ -926,6 +906,7 @@ int ip_tunnel_newlink(struct net_device *dev, struct nlattr *tb[],
         if (ip_tunnel_find(itn, p, dev->type))
                 return -EEXIST;
 
+        nt->net = net;
         nt->parms = *p;
         err = register_netdevice(dev);
         if (err)
diff --git a/net/ipv4/ip_tunnel_core.c b/net/ipv4/ip_tunnel_core.c
new file mode 100644
index 000000000000..7167b08977df
--- /dev/null
+++ b/net/ipv4/ip_tunnel_core.c
@@ -0,0 +1,122 @@
+/*
+ * Copyright (c) 2013 Nicira, Inc.
+ *
+ * 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
+ */
+
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
+#include <linux/types.h>
+#include <linux/kernel.h>
+#include <linux/skbuff.h>
+#include <linux/netdevice.h>
+#include <linux/in.h>
+#include <linux/if_arp.h>
+#include <linux/mroute.h>
+#include <linux/init.h>
+#include <linux/in6.h>
+#include <linux/inetdevice.h>
+#include <linux/netfilter_ipv4.h>
+#include <linux/etherdevice.h>
+#include <linux/if_ether.h>
+#include <linux/if_vlan.h>
+
+#include <net/ip.h>
+#include <net/icmp.h>
+#include <net/protocol.h>
+#include <net/ip_tunnels.h>
+#include <net/arp.h>
+#include <net/checksum.h>
+#include <net/dsfield.h>
+#include <net/inet_ecn.h>
+#include <net/xfrm.h>
+#include <net/net_namespace.h>
+#include <net/netns/generic.h>
+#include <net/rtnetlink.h>
+
+int iptunnel_xmit(struct net *net, struct rtable *rt,
+                  struct sk_buff *skb,
+                  __be32 src, __be32 dst, __u8 proto,
+                  __u8 tos, __u8 ttl, __be16 df)
+{
+        int pkt_len = skb->len;
+        struct iphdr *iph;
+        int err;
+
+        nf_reset(skb);
+        secpath_reset(skb);
+        skb->rxhash = 0;
+        skb_dst_drop(skb);
+        skb_dst_set(skb, &rt->dst);
+        memset(IPCB(skb), 0, sizeof(*IPCB(skb)));
+
+        /* Push down and install the IP header. */
+        __skb_push(skb, sizeof(struct iphdr));
+        skb_reset_network_header(skb);
+
+        iph = ip_hdr(skb);
+
+        iph->version    =       4;
+        iph->ihl        =       sizeof(struct iphdr) >> 2;
+        iph->frag_off   =       df;
+        iph->protocol   =       proto;
+        iph->tos        =       tos;
+        iph->daddr      =       dst;
+        iph->saddr      =       src;
+        iph->ttl        =       ttl;
+        tunnel_ip_select_ident(skb,
+                               (const struct iphdr *)skb_inner_network_header(skb),
+                               &rt->dst);
+
+        err = ip_local_out(skb);
+        if (unlikely(net_xmit_eval(err)))
+                pkt_len = 0;
+        return pkt_len;
+}
+EXPORT_SYMBOL_GPL(iptunnel_xmit);
+
+int iptunnel_pull_header(struct sk_buff *skb, int hdr_len, __be16 inner_proto)
+{
+        if (unlikely(!pskb_may_pull(skb, hdr_len)))
+                return -ENOMEM;
+
+        skb_pull_rcsum(skb, hdr_len);
+
+        if (inner_proto == htons(ETH_P_TEB)) {
+                struct ethhdr *eh = (struct ethhdr *)skb->data;
+
+                if (unlikely(!pskb_may_pull(skb, ETH_HLEN)))
+                        return -ENOMEM;
+
+                if (likely(ntohs(eh->h_proto) >= ETH_P_802_3_MIN))
+                        skb->protocol = eh->h_proto;
+                else
+                        skb->protocol = htons(ETH_P_802_2);
+
+        } else {
+                skb->protocol = inner_proto;
+        }
+
+        nf_reset(skb);
+        secpath_reset(skb);
+        if (!skb->l4_rxhash)
+                skb->rxhash = 0;
+        skb_dst_drop(skb);
+        skb->vlan_tci = 0;
+        skb_set_queue_mapping(skb, 0);
+        skb->pkt_type = PACKET_HOST;
+        return 0;
+}
+EXPORT_SYMBOL_GPL(iptunnel_pull_header);
diff --git a/net/ipv4/ip_vti.c b/net/ipv4/ip_vti.c
index c118f6b576bb..17cc0ffa8c0d 100644
--- a/net/ipv4/ip_vti.c
+++ b/net/ipv4/ip_vti.c
@@ -606,17 +606,10 @@ static int __net_init vti_fb_tunnel_init(struct net_device *dev)
         struct iphdr *iph = &tunnel->parms.iph;
         struct vti_net *ipn = net_generic(dev_net(dev), vti_net_id);
 
-        tunnel->dev = dev;
-        strcpy(tunnel->parms.name, dev->name);
-
         iph->version            = 4;
         iph->protocol           = IPPROTO_IPIP;
         iph->ihl                = 5;
 
-        dev->tstats = alloc_percpu(struct pcpu_tstats);
-        if (!dev->tstats)
-                return -ENOMEM;
-
         dev_hold(dev);
         rcu_assign_pointer(ipn->tunnels_wc[0], tunnel);
         return 0;
diff --git a/net/ipv4/ipcomp.c b/net/ipv4/ipcomp.c
index 59cb8c769056..826be4cb482a 100644
--- a/net/ipv4/ipcomp.c
+++ b/net/ipv4/ipcomp.c
@@ -47,12 +47,9 @@ static void ipcomp4_err(struct sk_buff *skb, u32 info)
         if (!x)
                 return;
 
-        if (icmp_hdr(skb)->type == ICMP_DEST_UNREACH) {
-                atomic_inc(&flow_cache_genid);
-                rt_genid_bump(net);
-
+        if (icmp_hdr(skb)->type == ICMP_DEST_UNREACH)
                 ipv4_update_pmtu(skb, net, info, 0, 0, IPPROTO_COMP, 0);
-        } else
+        else
                 ipv4_redirect(skb, net, 0, 0, IPPROTO_COMP, 0);
         xfrm_state_put(x);
 }
diff --git a/net/ipv4/ipip.c b/net/ipv4/ipip.c
index 77bfcce64fe5..51fc2a1dcdd3 100644
--- a/net/ipv4/ipip.c
+++ b/net/ipv4/ipip.c
@@ -188,8 +188,12 @@ static int ipip_rcv(struct sk_buff *skb)
         struct net *net = dev_net(skb->dev);
         struct ip_tunnel_net *itn = net_generic(net, ipip_net_id);
         struct ip_tunnel *tunnel;
-        const struct iphdr *iph = ip_hdr(skb);
+        const struct iphdr *iph;
 
+        if (iptunnel_pull_header(skb, 0, tpi.proto))
+                goto drop;
+
+        iph = ip_hdr(skb);
         tunnel = ip_tunnel_lookup(itn, skb->dev->ifindex, TUNNEL_NO_KEY,
                         iph->saddr, iph->daddr, 0);
         if (tunnel) {
@@ -222,7 +226,7 @@ static netdev_tx_t ipip_tunnel_xmit(struct sk_buff *skb, struct net_device *dev)
                 skb->encapsulation = 1;
         }
 
-        ip_tunnel_xmit(skb, dev, tiph);
+        ip_tunnel_xmit(skb, dev, tiph, tiph->protocol);
         return NETDEV_TX_OK;
 
 tx_error:
@@ -240,11 +244,13 @@ ipip_tunnel_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
         if (copy_from_user(&p, ifr->ifr_ifru.ifru_data, sizeof(p)))
                 return -EFAULT;
 
-        if (p.iph.version != 4 || p.iph.protocol != IPPROTO_IPIP ||
-                        p.iph.ihl != 5 || (p.iph.frag_off&htons(~IP_DF)))
-                return -EINVAL;
-        if (p.i_key || p.o_key || p.i_flags || p.o_flags)
-                return -EINVAL;
+        if (cmd == SIOCADDTUNNEL || cmd == SIOCCHGTUNNEL) {
+                if (p.iph.version != 4 || p.iph.protocol != IPPROTO_IPIP ||
+                    p.iph.ihl != 5 || (p.iph.frag_off&htons(~IP_DF)))
+                        return -EINVAL;
+        }
+
+        p.i_key = p.o_key = p.i_flags = p.o_flags = 0;
         if (p.iph.ttl)
                 p.iph.frag_off |= htons(IP_DF);
 
diff --git a/net/ipv4/ipmr.c b/net/ipv4/ipmr.c
index 9d9610ae7855..132a09664704 100644
--- a/net/ipv4/ipmr.c
+++ b/net/ipv4/ipmr.c
@@ -980,7 +980,7 @@ static int ipmr_cache_report(struct mr_table *mrt,
 
         /* Copy the IP header */
 
-        skb->network_header = skb->tail;
+        skb_set_network_header(skb, skb->len);
         skb_put(skb, ihl);
         skb_copy_to_linear_data(skb, pkt->data, ihl);
         ip_hdr(skb)->protocol = 0;      /* Flag to the kernel this is a route add */
@@ -1609,7 +1609,7 @@ int ipmr_compat_ioctl(struct sock *sk, unsigned int cmd, void __user *arg)
 
 static int ipmr_device_event(struct notifier_block *this, unsigned long event, void *ptr)
 {
-        struct net_device *dev = ptr;
+        struct net_device *dev = netdev_notifier_info_to_dev(ptr);
         struct net *net = dev_net(dev);
         struct mr_table *mrt;
         struct vif_device *v;
diff --git a/net/ipv4/netfilter/Kconfig b/net/ipv4/netfilter/Kconfig
index e7916c193932..4e9028017428 100644
--- a/net/ipv4/netfilter/Kconfig
+++ b/net/ipv4/netfilter/Kconfig
@@ -111,7 +111,7 @@ config IP_NF_TARGET_REJECT
           To compile it as a module, choose M here.  If unsure, say N.
 
 config IP_NF_TARGET_ULOG
-        tristate "ULOG target support"
+        tristate "ULOG target support (obsolete)"
         default m if NETFILTER_ADVANCED=n
         ---help---
 
diff --git a/net/ipv4/netfilter/ipt_MASQUERADE.c b/net/ipv4/netfilter/ipt_MASQUERADE.c
index 5d5d4d1be9c2..30e4de940567 100644
--- a/net/ipv4/netfilter/ipt_MASQUERADE.c
+++ b/net/ipv4/netfilter/ipt_MASQUERADE.c
@@ -108,7 +108,7 @@ static int masq_device_event(struct notifier_block *this,
                              unsigned long event,
                              void *ptr)
 {
-        const struct net_device *dev = ptr;
+        const struct net_device *dev = netdev_notifier_info_to_dev(ptr);
         struct net *net = dev_net(dev);
 
         if (event == NETDEV_DOWN) {
@@ -129,7 +129,10 @@ static int masq_inet_event(struct notifier_block *this,
                            void *ptr)
 {
         struct net_device *dev = ((struct in_ifaddr *)ptr)->ifa_dev->dev;
-        return masq_device_event(this, event, dev);
+        struct netdev_notifier_info info;
+
+        netdev_notifier_info_init(&info, dev);
+        return masq_device_event(this, event, &info);
 }
 
 static struct notifier_block masq_dev_notifier = {
diff --git a/net/ipv4/netfilter/ipt_ULOG.c b/net/ipv4/netfilter/ipt_ULOG.c
index 32b0e978c8e0..cbc22158af49 100644
--- a/net/ipv4/netfilter/ipt_ULOG.c
+++ b/net/ipv4/netfilter/ipt_ULOG.c
@@ -331,6 +331,12 @@ static int ulog_tg_check(const struct xt_tgchk_param *par)
 {
         const struct ipt_ulog_info *loginfo = par->targinfo;
 
+        if (!par->net->xt.ulog_warn_deprecated) {
+                pr_info("ULOG is deprecated and it will be removed soon, "
+                        "use NFLOG instead\n");
+                par->net->xt.ulog_warn_deprecated = true;
+        }
+
         if (loginfo->prefix[sizeof(loginfo->prefix) - 1] != '\0') {
                 pr_debug("prefix not null-terminated\n");
                 return -EINVAL;
diff --git a/net/ipv4/netfilter/nf_conntrack_l3proto_ipv4.c b/net/ipv4/netfilter/nf_conntrack_l3proto_ipv4.c
index 567d84168bd2..0a2e0e3e95ba 100644
--- a/net/ipv4/netfilter/nf_conntrack_l3proto_ipv4.c
+++ b/net/ipv4/netfilter/nf_conntrack_l3proto_ipv4.c
@@ -223,7 +223,7 @@ static struct nf_hook_ops ipv4_conntrack_ops[] __read_mostly = {
 static int log_invalid_proto_min = 0;
 static int log_invalid_proto_max = 255;
 
-static ctl_table ip_ct_sysctl_table[] = {
+static struct ctl_table ip_ct_sysctl_table[] = {
         {
                 .procname       = "ip_conntrack_max",
                 .maxlen         = sizeof(int),
diff --git a/net/ipv4/ping.c b/net/ipv4/ping.c
index 7d93d62cd5fd..746427c9e719 100644
--- a/net/ipv4/ping.c
+++ b/net/ipv4/ping.c
@@ -33,7 +33,6 @@
 #include <linux/netdevice.h>
 #include <net/snmp.h>
 #include <net/ip.h>
-#include <net/ipv6.h>
 #include <net/icmp.h>
 #include <net/protocol.h>
 #include <linux/skbuff.h>
@@ -46,8 +45,18 @@
 #include <net/inet_common.h>
 #include <net/checksum.h>
 
+#if IS_ENABLED(CONFIG_IPV6)
+#include <linux/in6.h>
+#include <linux/icmpv6.h>
+#include <net/addrconf.h>
+#include <net/ipv6.h>
+#include <net/transp_v6.h>
+#endif
 
-static struct ping_table ping_table;
+
+struct ping_table ping_table;
+struct pingv6_ops pingv6_ops;
+EXPORT_SYMBOL_GPL(pingv6_ops);
 
 static u16 ping_port_rover;
 
@@ -58,6 +67,7 @@ static inline int ping_hashfn(struct net *net, unsigned int num, unsigned int ma
         pr_debug("hash(%d) = %d\n", num, res);
         return res;
 }
+EXPORT_SYMBOL_GPL(ping_hash);
 
 static inline struct hlist_nulls_head *ping_hashslot(struct ping_table *table,
                                              struct net *net, unsigned int num)
@@ -65,7 +75,7 @@ static inline struct hlist_nulls_head *ping_hashslot(struct ping_table *table,
         return &table->hash[ping_hashfn(net, num, PING_HTABLE_MASK)];
 }
 
-static int ping_v4_get_port(struct sock *sk, unsigned short ident)
+int ping_get_port(struct sock *sk, unsigned short ident)
 {
         struct hlist_nulls_node *node;
         struct hlist_nulls_head *hlist;
@@ -103,6 +113,10 @@ next_port:
                 ping_portaddr_for_each_entry(sk2, node, hlist) {
                         isk2 = inet_sk(sk2);
 
+                        /* BUG? Why is this reuse and not reuseaddr? ping.c
+                         * doesn't turn off SO_REUSEADDR, and it doesn't expect
+                         * that other ping processes can steal its packets.
+                         */
                         if ((isk2->inet_num == ident) &&
                             (sk2 != sk) &&
                             (!sk2->sk_reuse || !sk->sk_reuse))
@@ -125,17 +139,18 @@ fail:
         write_unlock_bh(&ping_table.lock);
         return 1;
 }
+EXPORT_SYMBOL_GPL(ping_get_port);
 
-static void ping_v4_hash(struct sock *sk)
+void ping_hash(struct sock *sk)
 {
-        pr_debug("ping_v4_hash(sk->port=%u)\n", inet_sk(sk)->inet_num);
+        pr_debug("ping_hash(sk->port=%u)\n", inet_sk(sk)->inet_num);
         BUG(); /* "Please do not press this button again." */
 }
 
-static void ping_v4_unhash(struct sock *sk)
+void ping_unhash(struct sock *sk)
 {
         struct inet_sock *isk = inet_sk(sk);
-        pr_debug("ping_v4_unhash(isk=%p,isk->num=%u)\n", isk, isk->inet_num);
+        pr_debug("ping_unhash(isk=%p,isk->num=%u)\n", isk, isk->inet_num);
         if (sk_hashed(sk)) {
                 write_lock_bh(&ping_table.lock);
                 hlist_nulls_del(&sk->sk_nulls_node);
@@ -146,31 +161,61 @@ static void ping_v4_unhash(struct sock *sk)
                 write_unlock_bh(&ping_table.lock);
         }
 }
+EXPORT_SYMBOL_GPL(ping_unhash);
 
-static struct sock *ping_v4_lookup(struct net *net, __be32 saddr, __be32 daddr,
-                                   u16 ident, int dif)
+static struct sock *ping_lookup(struct net *net, struct sk_buff *skb, u16 ident)
 {
         struct hlist_nulls_head *hslot = ping_hashslot(&ping_table, net, ident);
         struct sock *sk = NULL;
         struct inet_sock *isk;
         struct hlist_nulls_node *hnode;
+        int dif = skb->dev->ifindex;
+
+        if (skb->protocol == htons(ETH_P_IP)) {
+                pr_debug("try to find: num = %d, daddr = %pI4, dif = %d\n",
+                         (int)ident, &ip_hdr(skb)->daddr, dif);
+#if IS_ENABLED(CONFIG_IPV6)
+        } else if (skb->protocol == htons(ETH_P_IPV6)) {
+                pr_debug("try to find: num = %d, daddr = %pI6c, dif = %d\n",
+                         (int)ident, &ipv6_hdr(skb)->daddr, dif);
+#endif
+        }
 
-        pr_debug("try to find: num = %d, daddr = %pI4, dif = %d\n",
-                 (int)ident, &daddr, dif);
         read_lock_bh(&ping_table.lock);
 
         ping_portaddr_for_each_entry(sk, hnode, hslot) {
                 isk = inet_sk(sk);
 
-                pr_debug("found: %p: num = %d, daddr = %pI4, dif = %d\n", sk,
-                         (int)isk->inet_num, &isk->inet_rcv_saddr,
-                         sk->sk_bound_dev_if);
-
                 pr_debug("iterate\n");
                 if (isk->inet_num != ident)
                         continue;
-                if (isk->inet_rcv_saddr && isk->inet_rcv_saddr != daddr)
-                        continue;
+
+                if (skb->protocol == htons(ETH_P_IP) &&
+                    sk->sk_family == AF_INET) {
+                        pr_debug("found: %p: num=%d, daddr=%pI4, dif=%d\n", sk,
+                                 (int) isk->inet_num, &isk->inet_rcv_saddr,
+                                 sk->sk_bound_dev_if);
+
+                        if (isk->inet_rcv_saddr &&
+                            isk->inet_rcv_saddr != ip_hdr(skb)->daddr)
+                                continue;
+#if IS_ENABLED(CONFIG_IPV6)
+                } else if (skb->protocol == htons(ETH_P_IPV6) &&
+                           sk->sk_family == AF_INET6) {
+                        struct ipv6_pinfo *np = inet6_sk(sk);
+
+                        pr_debug("found: %p: num=%d, daddr=%pI6c, dif=%d\n", sk,
+                                 (int) isk->inet_num,
+                                 &inet6_sk(sk)->rcv_saddr,
+                                 sk->sk_bound_dev_if);
+
+                        if (!ipv6_addr_any(&np->rcv_saddr) &&
+                            !ipv6_addr_equal(&np->rcv_saddr,
+                                             &ipv6_hdr(skb)->daddr))
+                                continue;
+#endif
+                }
+
                 if (sk->sk_bound_dev_if && sk->sk_bound_dev_if != dif)
                         continue;
 
@@ -200,7 +245,7 @@ static void inet_get_ping_group_range_net(struct net *net, kgid_t *low,
 }
 
 
-static int ping_init_sock(struct sock *sk)
+int ping_init_sock(struct sock *sk)
 {
         struct net *net = sock_net(sk);
         kgid_t group = current_egid();
@@ -225,8 +270,9 @@ static int ping_init_sock(struct sock *sk)
 
         return -EACCES;
 }
+EXPORT_SYMBOL_GPL(ping_init_sock);
 
-static void ping_close(struct sock *sk, long timeout)
+void ping_close(struct sock *sk, long timeout)
 {
         pr_debug("ping_close(sk=%p,sk->num=%u)\n",
                  inet_sk(sk), inet_sk(sk)->inet_num);
@@ -234,36 +280,122 @@ static void ping_close(struct sock *sk, long timeout)
 
         sk_common_release(sk);
 }
+EXPORT_SYMBOL_GPL(ping_close);
+
+/* Checks the bind address and possibly modifies sk->sk_bound_dev_if. */
+static int ping_check_bind_addr(struct sock *sk, struct inet_sock *isk,
+                                struct sockaddr *uaddr, int addr_len) {
+        struct net *net = sock_net(sk);
+        if (sk->sk_family == AF_INET) {
+                struct sockaddr_in *addr = (struct sockaddr_in *) uaddr;
+                int chk_addr_ret;
+
+                if (addr_len < sizeof(*addr))
+                        return -EINVAL;
+
+                pr_debug("ping_check_bind_addr(sk=%p,addr=%pI4,port=%d)\n",
+                         sk, &addr->sin_addr.s_addr, ntohs(addr->sin_port));
+
+                chk_addr_ret = inet_addr_type(net, addr->sin_addr.s_addr);
+
+                if (addr->sin_addr.s_addr == htonl(INADDR_ANY))
+                        chk_addr_ret = RTN_LOCAL;
+
+                if ((sysctl_ip_nonlocal_bind == 0 &&
+                    isk->freebind == 0 && isk->transparent == 0 &&
+                     chk_addr_ret != RTN_LOCAL) ||
+                    chk_addr_ret == RTN_MULTICAST ||
+                    chk_addr_ret == RTN_BROADCAST)
+                        return -EADDRNOTAVAIL;
+
+#if IS_ENABLED(CONFIG_IPV6)
+        } else if (sk->sk_family == AF_INET6) {
+                struct sockaddr_in6 *addr = (struct sockaddr_in6 *) uaddr;
+                int addr_type, scoped, has_addr;
+                struct net_device *dev = NULL;
+
+                if (addr_len < sizeof(*addr))
+                        return -EINVAL;
+
+                pr_debug("ping_check_bind_addr(sk=%p,addr=%pI6c,port=%d)\n",
+                         sk, addr->sin6_addr.s6_addr, ntohs(addr->sin6_port));
+
+                addr_type = ipv6_addr_type(&addr->sin6_addr);
+                scoped = __ipv6_addr_needs_scope_id(addr_type);
+                if ((addr_type != IPV6_ADDR_ANY &&
+                     !(addr_type & IPV6_ADDR_UNICAST)) ||
+                    (scoped && !addr->sin6_scope_id))
+                        return -EINVAL;
+
+                rcu_read_lock();
+                if (addr->sin6_scope_id) {
+                        dev = dev_get_by_index_rcu(net, addr->sin6_scope_id);
+                        if (!dev) {
+                                rcu_read_unlock();
+                                return -ENODEV;
+                        }
+                }
+                has_addr = pingv6_ops.ipv6_chk_addr(net, &addr->sin6_addr, dev,
+                                                    scoped);
+                rcu_read_unlock();
+
+                if (!(isk->freebind || isk->transparent || has_addr ||
+                      addr_type == IPV6_ADDR_ANY))
+                        return -EADDRNOTAVAIL;
+
+                if (scoped)
+                        sk->sk_bound_dev_if = addr->sin6_scope_id;
+#endif
+        } else {
+                return -EAFNOSUPPORT;
+        }
+        return 0;
+}
+
+static void ping_set_saddr(struct sock *sk, struct sockaddr *saddr)
+{
+        if (saddr->sa_family == AF_INET) {
+                struct inet_sock *isk = inet_sk(sk);
+                struct sockaddr_in *addr = (struct sockaddr_in *) saddr;
+                isk->inet_rcv_saddr = isk->inet_saddr = addr->sin_addr.s_addr;
+#if IS_ENABLED(CONFIG_IPV6)
+        } else if (saddr->sa_family == AF_INET6) {
+                struct sockaddr_in6 *addr = (struct sockaddr_in6 *) saddr;
+                struct ipv6_pinfo *np = inet6_sk(sk);
+                np->rcv_saddr = np->saddr = addr->sin6_addr;
+#endif
+        }
+}
 
+static void ping_clear_saddr(struct sock *sk, int dif)
+{
+        sk->sk_bound_dev_if = dif;
+        if (sk->sk_family == AF_INET) {
+                struct inet_sock *isk = inet_sk(sk);
+                isk->inet_rcv_saddr = isk->inet_saddr = 0;
+#if IS_ENABLED(CONFIG_IPV6)
+        } else if (sk->sk_family == AF_INET6) {
+                struct ipv6_pinfo *np = inet6_sk(sk);
+                memset(&np->rcv_saddr, 0, sizeof(np->rcv_saddr));
+                memset(&np->saddr, 0, sizeof(np->saddr));
+#endif
+        }
+}
 /*
  * We need our own bind because there are no privileged id's == local ports.
  * Moreover, we don't allow binding to multi- and broadcast addresses.
  */
 
-static int ping_bind(struct sock *sk, struct sockaddr *uaddr, int addr_len)
+int ping_bind(struct sock *sk, struct sockaddr *uaddr, int addr_len)
 {
-        struct sockaddr_in *addr = (struct sockaddr_in *)uaddr;
         struct inet_sock *isk = inet_sk(sk);
         unsigned short snum;
-        int chk_addr_ret;
         int err;
+        int dif = sk->sk_bound_dev_if;
 
-        if (addr_len < sizeof(struct sockaddr_in))
-                return -EINVAL;
-
-        pr_debug("ping_v4_bind(sk=%p,sa_addr=%08x,sa_port=%d)\n",
-                 sk, addr->sin_addr.s_addr, ntohs(addr->sin_port));
-
-        chk_addr_ret = inet_addr_type(sock_net(sk), addr->sin_addr.s_addr);
-        if (addr->sin_addr.s_addr == htonl(INADDR_ANY))
-                chk_addr_ret = RTN_LOCAL;
-
-        if ((sysctl_ip_nonlocal_bind == 0 &&
-            isk->freebind == 0 && isk->transparent == 0 &&
-             chk_addr_ret != RTN_LOCAL) ||
-            chk_addr_ret == RTN_MULTICAST ||
-            chk_addr_ret == RTN_BROADCAST)
-                return -EADDRNOTAVAIL;
+        err = ping_check_bind_addr(sk, isk, uaddr, addr_len);
+        if (err)
+                return err;
 
         lock_sock(sk);
 
@@ -272,42 +404,50 @@ static int ping_bind(struct sock *sk, struct sockaddr *uaddr, int addr_len)
                 goto out;
 
         err = -EADDRINUSE;
-        isk->inet_rcv_saddr = isk->inet_saddr = addr->sin_addr.s_addr;
-        snum = ntohs(addr->sin_port);
-        if (ping_v4_get_port(sk, snum) != 0) {
-                isk->inet_saddr = isk->inet_rcv_saddr = 0;
+        ping_set_saddr(sk, uaddr);
+        snum = ntohs(((struct sockaddr_in *)uaddr)->sin_port);
+        if (ping_get_port(sk, snum) != 0) {
+                ping_clear_saddr(sk, dif);
                 goto out;
         }
 
-        pr_debug("after bind(): num = %d, daddr = %pI4, dif = %d\n",
+        pr_debug("after bind(): num = %d, dif = %d\n",
                  (int)isk->inet_num,
-                 &isk->inet_rcv_saddr,
                  (int)sk->sk_bound_dev_if);
 
         err = 0;
-        if (isk->inet_rcv_saddr)
+        if ((sk->sk_family == AF_INET && isk->inet_rcv_saddr) ||
+            (sk->sk_family == AF_INET6 &&
+             !ipv6_addr_any(&inet6_sk(sk)->rcv_saddr)))
                 sk->sk_userlocks |= SOCK_BINDADDR_LOCK;
+
         if (snum)
                 sk->sk_userlocks |= SOCK_BINDPORT_LOCK;
         isk->inet_sport = htons(isk->inet_num);
         isk->inet_daddr = 0;
         isk->inet_dport = 0;
+
+#if IS_ENABLED(CONFIG_IPV6)
+        if (sk->sk_family == AF_INET6)
+                memset(&inet6_sk(sk)->daddr, 0, sizeof(inet6_sk(sk)->daddr));
+#endif
+
         sk_dst_reset(sk);
 out:
         release_sock(sk);
         pr_debug("ping_v4_bind -> %d\n", err);
         return err;
 }
+EXPORT_SYMBOL_GPL(ping_bind);
 
 /*
  * Is this a supported type of ICMP message?
  */
 
-static inline int ping_supported(int type, int code)
+static inline int ping_supported(int family, int type, int code)
 {
-        if (type == ICMP_ECHO && code == 0)
-                return 1;
-        return 0;
+        return (family == AF_INET && type == ICMP_ECHO && code == 0) ||
+               (family == AF_INET6 && type == ICMPV6_ECHO_REQUEST && code == 0);
 }
 
 /*
@@ -315,30 +455,42 @@ static inline int ping_supported(int type, int code)
  * sort of error condition.
  */
 
-static int ping_queue_rcv_skb(struct sock *sk, struct sk_buff *skb);
-
-void ping_err(struct sk_buff *skb, u32 info)
+void ping_err(struct sk_buff *skb, int offset, u32 info)
 {
-        struct iphdr *iph = (struct iphdr *)skb->data;
-        struct icmphdr *icmph = (struct icmphdr *)(skb->data+(iph->ihl<<2));
+        int family;
+        struct icmphdr *icmph;
         struct inet_sock *inet_sock;
-        int type = icmp_hdr(skb)->type;
-        int code = icmp_hdr(skb)->code;
+        int type;
+        int code;
         struct net *net = dev_net(skb->dev);
         struct sock *sk;
         int harderr;
         int err;
 
+        if (skb->protocol == htons(ETH_P_IP)) {
+                family = AF_INET;
+                type = icmp_hdr(skb)->type;
+                code = icmp_hdr(skb)->code;
+                icmph = (struct icmphdr *)(skb->data + offset);
+        } else if (skb->protocol == htons(ETH_P_IPV6)) {
+                family = AF_INET6;
+                type = icmp6_hdr(skb)->icmp6_type;
+                code = icmp6_hdr(skb)->icmp6_code;
+                icmph = (struct icmphdr *) (skb->data + offset);
+        } else {
+                BUG();
+        }
+
         /* We assume the packet has already been checked by icmp_unreach */
 
-        if (!ping_supported(icmph->type, icmph->code))
+        if (!ping_supported(family, icmph->type, icmph->code))
                 return;
 
-        pr_debug("ping_err(type=%04x,code=%04x,id=%04x,seq=%04x)\n", type,
-                 code, ntohs(icmph->un.echo.id), ntohs(icmph->un.echo.sequence));
+        pr_debug("ping_err(proto=0x%x,type=%d,code=%d,id=%04x,seq=%04x)\n",
+                 skb->protocol, type, code, ntohs(icmph->un.echo.id),
+                 ntohs(icmph->un.echo.sequence));
 
-        sk = ping_v4_lookup(net, iph->daddr, iph->saddr,
-                            ntohs(icmph->un.echo.id), skb->dev->ifindex);
+        sk = ping_lookup(net, skb, ntohs(icmph->un.echo.id));
         if (sk == NULL) {
                 pr_debug("no socket, dropping\n");
                 return; /* No socket for error */
@@ -349,72 +501,83 @@ void ping_err(struct sk_buff *skb, u32 info)
         harderr = 0;
         inet_sock = inet_sk(sk);
 
-        switch (type) {
-        default:
-        case ICMP_TIME_EXCEEDED:
-                err = EHOSTUNREACH;
-                break;
-        case ICMP_SOURCE_QUENCH:
-                /* This is not a real error but ping wants to see it.
-                 * Report it with some fake errno. */
-                err = EREMOTEIO;
-                break;
-        case ICMP_PARAMETERPROB:
-                err = EPROTO;
-                harderr = 1;
-                break;
-        case ICMP_DEST_UNREACH:
-                if (code == ICMP_FRAG_NEEDED) { /* Path MTU discovery */
-                        ipv4_sk_update_pmtu(skb, sk, info);
-                        if (inet_sock->pmtudisc != IP_PMTUDISC_DONT) {
-                                err = EMSGSIZE;
-                                harderr = 1;
-                                break;
+        if (skb->protocol == htons(ETH_P_IP)) {
+                switch (type) {
+                default:
+                case ICMP_TIME_EXCEEDED:
+                        err = EHOSTUNREACH;
+                        break;
+                case ICMP_SOURCE_QUENCH:
+                        /* This is not a real error but ping wants to see it.
+                         * Report it with some fake errno.
+                         */
+                        err = EREMOTEIO;
+                        break;
+                case ICMP_PARAMETERPROB:
+                        err = EPROTO;
+                        harderr = 1;
+                        break;
+                case ICMP_DEST_UNREACH:
+                        if (code == ICMP_FRAG_NEEDED) { /* Path MTU discovery */
+                                ipv4_sk_update_pmtu(skb, sk, info);
+                                if (inet_sock->pmtudisc != IP_PMTUDISC_DONT) {
+                                        err = EMSGSIZE;
+                                        harderr = 1;
+                                        break;
+                                }
+                                goto out;
                         }
-                        goto out;
-                }
-                err = EHOSTUNREACH;
-                if (code <= NR_ICMP_UNREACH) {
-                        harderr = icmp_err_convert[code].fatal;
-                        err = icmp_err_convert[code].errno;
+                        err = EHOSTUNREACH;
+                        if (code <= NR_ICMP_UNREACH) {
+                                harderr = icmp_err_convert[code].fatal;
+                                err = icmp_err_convert[code].errno;
+                        }
+                        break;
+                case ICMP_REDIRECT:
+                        /* See ICMP_SOURCE_QUENCH */
+                        ipv4_sk_redirect(skb, sk);
+                        err = EREMOTEIO;
+                        break;
                 }
-                break;
-        case ICMP_REDIRECT:
-                /* See ICMP_SOURCE_QUENCH */
-                ipv4_sk_redirect(skb, sk);
-                err = EREMOTEIO;
-                break;
+#if IS_ENABLED(CONFIG_IPV6)
+        } else if (skb->protocol == htons(ETH_P_IPV6)) {
+                harderr = pingv6_ops.icmpv6_err_convert(type, code, &err);
+#endif
         }
 
         /*
          *      RFC1122: OK.  Passes ICMP errors back to application, as per
          *      4.1.3.3.
          */
-        if (!inet_sock->recverr) {
+        if ((family == AF_INET && !inet_sock->recverr) ||
+            (family == AF_INET6 && !inet6_sk(sk)->recverr)) {
                 if (!harderr || sk->sk_state != TCP_ESTABLISHED)
                         goto out;
         } else {
-                ip_icmp_error(sk, skb, err, 0 /* no remote port */,
-                         info, (u8 *)icmph);
+                if (family == AF_INET) {
+                        ip_icmp_error(sk, skb, err, 0 /* no remote port */,
+                                      info, (u8 *)icmph);
+#if IS_ENABLED(CONFIG_IPV6)
+                } else if (family == AF_INET6) {
+                        pingv6_ops.ipv6_icmp_error(sk, skb, err, 0,
+                                                   info, (u8 *)icmph);
+#endif
+                }
         }
         sk->sk_err = err;
         sk->sk_error_report(sk);
 out:
         sock_put(sk);
 }
+EXPORT_SYMBOL_GPL(ping_err);
 
 /*
- *      Copy and checksum an ICMP Echo packet from user space into a buffer.
+ *      Copy and checksum an ICMP Echo packet from user space into a buffer
+ *      starting from the payload.
  */
 
-struct pingfakehdr {
-        struct icmphdr icmph;
-        struct iovec *iov;
-        __wsum wcheck;
-};
-
-static int ping_getfrag(void *from, char *to,
-                        int offset, int fraglen, int odd, struct sk_buff *skb)
+int ping_getfrag(void *from, char *to,
+                 int offset, int fraglen, int odd, struct sk_buff *skb)
 {
         struct pingfakehdr *pfh = (struct pingfakehdr *)from;
 
@@ -425,20 +588,33 @@ static int ping_getfrag(void *from, char *to,
                             pfh->iov, 0, fraglen - sizeof(struct icmphdr),
                             &pfh->wcheck))
                         return -EFAULT;
+        } else if (offset < sizeof(struct icmphdr)) {
+                        BUG();
+        } else {
+                if (csum_partial_copy_fromiovecend
+                                (to, pfh->iov, offset - sizeof(struct icmphdr),
+                                 fraglen, &pfh->wcheck))
+                        return -EFAULT;
+        }
 
-                return 0;
+#if IS_ENABLED(CONFIG_IPV6)
+        /* For IPv6, checksum each skb as we go along, as expected by
+         * icmpv6_push_pending_frames. For IPv4, accumulate the checksum in
+         * wcheck, it will be finalized in ping_v4_push_pending_frames.
+         */
+        if (pfh->family == AF_INET6) {
+                skb->csum = pfh->wcheck;
+                skb->ip_summed = CHECKSUM_NONE;
+                pfh->wcheck = 0;
         }
-        if (offset < sizeof(struct icmphdr))
-                BUG();
-        if (csum_partial_copy_fromiovecend
-                        (to, pfh->iov, offset - sizeof(struct icmphdr),
-                         fraglen, &pfh->wcheck))
-                return -EFAULT;
+#endif
+
         return 0;
 }
+EXPORT_SYMBOL_GPL(ping_getfrag);
 
-static int ping_push_pending_frames(struct sock *sk, struct pingfakehdr *pfh,
-                                    struct flowi4 *fl4)
+static int ping_v4_push_pending_frames(struct sock *sk, struct pingfakehdr *pfh,
+                                       struct flowi4 *fl4)
 {
         struct sk_buff *skb = skb_peek(&sk->sk_write_queue);
 
@@ -450,24 +626,9 @@ static int ping_push_pending_frames(struct sock *sk, struct pingfakehdr *pfh,
         return ip_push_pending_frames(sk, fl4);
 }
 
-static int ping_sendmsg(struct kiocb *iocb, struct sock *sk, struct msghdr *msg,
-                        size_t len)
-{
-        struct net *net = sock_net(sk);
-        struct flowi4 fl4;
-        struct inet_sock *inet = inet_sk(sk);
-        struct ipcm_cookie ipc;
-        struct icmphdr user_icmph;
-        struct pingfakehdr pfh;
-        struct rtable *rt = NULL;
-        struct ip_options_data opt_copy;
-        int free = 0;
-        __be32 saddr, daddr, faddr;
-        u8  tos;
-        int err;
-
-        pr_debug("ping_sendmsg(sk=%p,sk->num=%u)\n", inet, inet->inet_num);
-
+int ping_common_sendmsg(int family, struct msghdr *msg, size_t len,
+                        void *user_icmph, size_t icmph_len) {
+        u8 type, code;
 
         if (len > 0xFFFF)
                 return -EMSGSIZE;
@@ -482,15 +643,53 @@ static int ping_sendmsg(struct kiocb *iocb, struct sock *sk, struct msghdr *msg,
 
         /*
          *      Fetch the ICMP header provided by the userland.
-         *      iovec is modified!
+         *      iovec is modified! The ICMP header is consumed.
          */
-
-        if (memcpy_fromiovec((u8 *)&user_icmph, msg->msg_iov,
-                             sizeof(struct icmphdr)))
+        if (memcpy_fromiovec(user_icmph, msg->msg_iov, icmph_len))
                 return -EFAULT;
-        if (!ping_supported(user_icmph.type, user_icmph.code))
+
+        if (family == AF_INET) {
+                type = ((struct icmphdr *) user_icmph)->type;
+                code = ((struct icmphdr *) user_icmph)->code;
+#if IS_ENABLED(CONFIG_IPV6)
+        } else if (family == AF_INET6) {
+                type = ((struct icmp6hdr *) user_icmph)->icmp6_type;
+                code = ((struct icmp6hdr *) user_icmph)->icmp6_code;
+#endif
+        } else {
+                BUG();
+        }
+
+        if (!ping_supported(family, type, code))
                 return -EINVAL;
 
+        return 0;
+}
+EXPORT_SYMBOL_GPL(ping_common_sendmsg);
+
+int ping_v4_sendmsg(struct kiocb *iocb, struct sock *sk, struct msghdr *msg,
+                    size_t len)
+{
+        struct net *net = sock_net(sk);
+        struct flowi4 fl4;
+        struct inet_sock *inet = inet_sk(sk);
+        struct ipcm_cookie ipc;
+        struct icmphdr user_icmph;
+        struct pingfakehdr pfh;
+        struct rtable *rt = NULL;
+        struct ip_options_data opt_copy;
+        int free = 0;
+        __be32 saddr, daddr, faddr;
+        u8  tos;
+        int err;
+
+        pr_debug("ping_v4_sendmsg(sk=%p,sk->num=%u)\n", inet, inet->inet_num);
+
+        err = ping_common_sendmsg(AF_INET, msg, len, &user_icmph,
+                                  sizeof(user_icmph));
+        if (err)
+                return err;
+
         /*
          *      Get and verify the address.
          */
@@ -595,13 +794,14 @@ back_from_confirm:
         pfh.icmph.un.echo.sequence = user_icmph.un.echo.sequence;
         pfh.iov = msg->msg_iov;
         pfh.wcheck = 0;
+        pfh.family = AF_INET;
 
         err = ip_append_data(sk, &fl4, ping_getfrag, &pfh, len,
                         0, &ipc, &rt, msg->msg_flags);
         if (err)
                 ip_flush_pending_frames(sk);
         else
-                err = ping_push_pending_frames(sk, &pfh, &fl4);
+                err = ping_v4_push_pending_frames(sk, &pfh, &fl4);
         release_sock(sk);
 
 out:
@@ -622,11 +822,13 @@ do_confirm:
         goto out;
 }
 
-static int ping_recvmsg(struct kiocb *iocb, struct sock *sk, struct msghdr *msg,
-                        size_t len, int noblock, int flags, int *addr_len)
+int ping_recvmsg(struct kiocb *iocb, struct sock *sk, struct msghdr *msg,
+                 size_t len, int noblock, int flags, int *addr_len)
 {
         struct inet_sock *isk = inet_sk(sk);
-        struct sockaddr_in *sin = (struct sockaddr_in *)msg->msg_name;
+        int family = sk->sk_family;
+        struct sockaddr_in *sin;
+        struct sockaddr_in6 *sin6;
         struct sk_buff *skb;
         int copied, err;
 
@@ -636,11 +838,22 @@ static int ping_recvmsg(struct kiocb *iocb, struct sock *sk, struct msghdr *msg,
         if (flags & MSG_OOB)
                 goto out;
 
-        if (addr_len)
-                *addr_len = sizeof(*sin);
+        if (addr_len) {
+                if (family == AF_INET)
+                        *addr_len = sizeof(*sin);
+                else if (family == AF_INET6 && addr_len)
+                        *addr_len = sizeof(*sin6);
+        }
 
-        if (flags & MSG_ERRQUEUE)
-                return ip_recv_error(sk, msg, len);
+        if (flags & MSG_ERRQUEUE) {
+                if (family == AF_INET) {
+                        return ip_recv_error(sk, msg, len);
+#if IS_ENABLED(CONFIG_IPV6)
+                } else if (family == AF_INET6) {
+                        return pingv6_ops.ipv6_recv_error(sk, msg, len);
+#endif
+                }
+        }
 
         skb = skb_recv_datagram(sk, flags, noblock, &err);
         if (!skb)
@@ -659,15 +872,40 @@ static int ping_recvmsg(struct kiocb *iocb, struct sock *sk, struct msghdr *msg,
 
         sock_recv_timestamp(msg, sk, skb);
 
-        /* Copy the address. */
-        if (sin) {
+        /* Copy the address and add cmsg data. */
+        if (family == AF_INET) {
+                sin = (struct sockaddr_in *) msg->msg_name;
                 sin->sin_family = AF_INET;
                 sin->sin_port = 0 /* skb->h.uh->source */;
                 sin->sin_addr.s_addr = ip_hdr(skb)->saddr;
                 memset(sin->sin_zero, 0, sizeof(sin->sin_zero));
+
+                if (isk->cmsg_flags)
+                        ip_cmsg_recv(msg, skb);
+
+#if IS_ENABLED(CONFIG_IPV6)
+        } else if (family == AF_INET6) {
+                struct ipv6_pinfo *np = inet6_sk(sk);
+                struct ipv6hdr *ip6 = ipv6_hdr(skb);
+                sin6 = (struct sockaddr_in6 *) msg->msg_name;
+                sin6->sin6_family = AF_INET6;
+                sin6->sin6_port = 0;
+                sin6->sin6_addr = ip6->saddr;
+
+                sin6->sin6_flowinfo = 0;
+                if (np->sndflow)
+                        sin6->sin6_flowinfo = ip6_flowinfo(ip6);
+
+                sin6->sin6_scope_id = ipv6_iface_scope_id(&sin6->sin6_addr,
+                                                          IP6CB(skb)->iif);
+
+                if (inet6_sk(sk)->rxopt.all)
+                        pingv6_ops.ip6_datagram_recv_ctl(sk, msg, skb);
+#endif
+        } else {
+                BUG();
         }
-        if (isk->cmsg_flags)
-                ip_cmsg_recv(msg, skb);
+
         err = copied;
 
 done:
@@ -676,8 +914,9 @@ out:
         pr_debug("ping_recvmsg -> %d\n", err);
         return err;
 }
+EXPORT_SYMBOL_GPL(ping_recvmsg);
 
-static int ping_queue_rcv_skb(struct sock *sk, struct sk_buff *skb)
+int ping_queue_rcv_skb(struct sock *sk, struct sk_buff *skb)
 {
         pr_debug("ping_queue_rcv_skb(sk=%p,sk->num=%d,skb=%p)\n",
                  inet_sk(sk), inet_sk(sk)->inet_num, skb);
@@ -688,6 +927,7 @@ static int ping_queue_rcv_skb(struct sock *sk, struct sk_buff *skb)
         }
         return 0;
 }
+EXPORT_SYMBOL_GPL(ping_queue_rcv_skb);
 
 
 /*
@@ -698,10 +938,7 @@ void ping_rcv(struct sk_buff *skb)
 {
         struct sock *sk;
         struct net *net = dev_net(skb->dev);
-        struct iphdr *iph = ip_hdr(skb);
         struct icmphdr *icmph = icmp_hdr(skb);
-        __be32 saddr = iph->saddr;
-        __be32 daddr = iph->daddr;
 
         /* We assume the packet has already been checked by icmp_rcv */
 
@@ -711,8 +948,7 @@ void ping_rcv(struct sk_buff *skb)
         /* Push ICMP header back */
         skb_push(skb, skb->data - (u8 *)icmph);
 
-        sk = ping_v4_lookup(net, saddr, daddr, ntohs(icmph->un.echo.id),
-                            skb->dev->ifindex);
+        sk = ping_lookup(net, skb, ntohs(icmph->un.echo.id));
         if (sk != NULL) {
                 pr_debug("rcv on socket %p\n", sk);
                 ping_queue_rcv_skb(sk, skb_get(skb));
@@ -723,6 +959,7 @@ void ping_rcv(struct sk_buff *skb)
 
         /* We're called from icmp_rcv(). kfree_skb() is done there. */
 }
+EXPORT_SYMBOL_GPL(ping_rcv);
 
 struct proto ping_prot = {
         .name =         "PING",
@@ -733,14 +970,14 @@ struct proto ping_prot = {
         .disconnect =   udp_disconnect,
         .setsockopt =   ip_setsockopt,
         .getsockopt =   ip_getsockopt,
-        .sendmsg =      ping_sendmsg,
+        .sendmsg =      ping_v4_sendmsg,
         .recvmsg =      ping_recvmsg,
         .bind =         ping_bind,
         .backlog_rcv =  ping_queue_rcv_skb,
         .release_cb =   ip4_datagram_release_cb,
-        .hash =         ping_v4_hash,
-        .unhash =       ping_v4_unhash,
-        .get_port =     ping_v4_get_port,
+        .hash =         ping_hash,
+        .unhash =       ping_unhash,
+        .get_port =     ping_get_port,
         .obj_size =     sizeof(struct inet_sock),
 };
 EXPORT_SYMBOL(ping_prot);
@@ -764,7 +1001,8 @@ static struct sock *ping_get_first(struct seq_file *seq, int start)
                         continue;
 
                 sk_nulls_for_each(sk, node, hslot) {
-                        if (net_eq(sock_net(sk), net))
+                        if (net_eq(sock_net(sk), net) &&
+                            sk->sk_family == state->family)
                                 goto found;
                 }
         }
@@ -797,17 +1035,24 @@ static struct sock *ping_get_idx(struct seq_file *seq, loff_t pos)
         return pos ? NULL : sk;
 }
 
-static void *ping_seq_start(struct seq_file *seq, loff_t *pos)
+void *ping_seq_start(struct seq_file *seq, loff_t *pos, sa_family_t family)
 {
         struct ping_iter_state *state = seq->private;
         state->bucket = 0;
+        state->family = family;
 
         read_lock_bh(&ping_table.lock);
 
         return *pos ? ping_get_idx(seq, *pos-1) : SEQ_START_TOKEN;
 }
+EXPORT_SYMBOL_GPL(ping_seq_start);
+
+static void *ping_v4_seq_start(struct seq_file *seq, loff_t *pos)
+{
+        return ping_seq_start(seq, pos, AF_INET);
+}
 
-static void *ping_seq_next(struct seq_file *seq, void *v, loff_t *pos)
+void *ping_seq_next(struct seq_file *seq, void *v, loff_t *pos)
 {
         struct sock *sk;
 
@@ -819,13 +1064,15 @@ static void *ping_seq_next(struct seq_file *seq, void *v, loff_t *pos)
         ++*pos;
         return sk;
 }
+EXPORT_SYMBOL_GPL(ping_seq_next);
 
-static void ping_seq_stop(struct seq_file *seq, void *v)
+void ping_seq_stop(struct seq_file *seq, void *v)
 {
         read_unlock_bh(&ping_table.lock);
 }
+EXPORT_SYMBOL_GPL(ping_seq_stop);
 
-static void ping_format_sock(struct sock *sp, struct seq_file *f,
+static void ping_v4_format_sock(struct sock *sp, struct seq_file *f,
                 int bucket, int *len)
 {
         struct inet_sock *inet = inet_sk(sp);
@@ -846,7 +1093,7 @@ static void ping_format_sock(struct sock *sp, struct seq_file *f,
                 atomic_read(&sp->sk_drops), len);
 }
 
-static int ping_seq_show(struct seq_file *seq, void *v)
+static int ping_v4_seq_show(struct seq_file *seq, void *v)
 {
         if (v == SEQ_START_TOKEN)
                 seq_printf(seq, "%-127s\n",
@@ -857,72 +1104,86 @@ static int ping_seq_show(struct seq_file *seq, void *v)
                 struct ping_iter_state *state = seq->private;
                 int len;
 
-                ping_format_sock(v, seq, state->bucket, &len);
+                ping_v4_format_sock(v, seq, state->bucket, &len);
                 seq_printf(seq, "%*s\n", 127 - len, "");
         }
         return 0;
 }
 
-static const struct seq_operations ping_seq_ops = {
-        .show           = ping_seq_show,
-        .start          = ping_seq_start,
+static const struct seq_operations ping_v4_seq_ops = {
+        .show           = ping_v4_seq_show,
+        .start          = ping_v4_seq_start,
         .next           = ping_seq_next,
         .stop           = ping_seq_stop,
 };
 
 static int ping_seq_open(struct inode *inode, struct file *file)
 {
-        return seq_open_net(inode, file, &ping_seq_ops,
+        struct ping_seq_afinfo *afinfo = PDE_DATA(inode);
+        return seq_open_net(inode, file, &afinfo->seq_ops,
                            sizeof(struct ping_iter_state));
 }
 
-static const struct file_operations ping_seq_fops = {
+const struct file_operations ping_seq_fops = {
         .open           = ping_seq_open,
         .read           = seq_read,
         .llseek         = seq_lseek,
         .release        = seq_release_net,
 };
+EXPORT_SYMBOL_GPL(ping_seq_fops);
+
+static struct ping_seq_afinfo ping_v4_seq_afinfo = {
+        .name           = "icmp",
+        .family         = AF_INET,
+        .seq_fops       = &ping_seq_fops,
+        .seq_ops        = {
+                .start          = ping_v4_seq_start,
+                .show           = ping_v4_seq_show,
+                .next           = ping_seq_next,
+                .stop           = ping_seq_stop,
+        },
+};
 
-static int ping_proc_register(struct net *net)
+int ping_proc_register(struct net *net, struct ping_seq_afinfo *afinfo)
 {
         struct proc_dir_entry *p;
-        int rc = 0;
-
-        p = proc_create("icmp", S_IRUGO, net->proc_net, &ping_seq_fops);
+        p = proc_create_data(afinfo->name, S_IRUGO, net->proc_net,
+                             afinfo->seq_fops, afinfo);
         if (!p)
-                rc = -ENOMEM;
-        return rc;
+                return -ENOMEM;
+        return 0;
 }
+EXPORT_SYMBOL_GPL(ping_proc_register);
 
-static void ping_proc_unregister(struct net *net)
+void ping_proc_unregister(struct net *net, struct ping_seq_afinfo *afinfo)
 {
-        remove_proc_entry("icmp", net->proc_net);
+        remove_proc_entry(afinfo->name, net->proc_net);
 }
+EXPORT_SYMBOL_GPL(ping_proc_unregister);
 
-
-static int __net_init ping_proc_init_net(struct net *net)
+static int __net_init ping_v4_proc_init_net(struct net *net)
 {
-        return ping_proc_register(net);
+        return ping_proc_register(net, &ping_v4_seq_afinfo);
 }
 
-static void __net_exit ping_proc_exit_net(struct net *net)
+static void __net_exit ping_v4_proc_exit_net(struct net *net)
 {
-        ping_proc_unregister(net);
+        ping_proc_unregister(net, &ping_v4_seq_afinfo);
 }
 
-static struct pernet_operations ping_net_ops = {
-        .init = ping_proc_init_net,
-        .exit = ping_proc_exit_net,
+static struct pernet_operations ping_v4_net_ops = {
+        .init = ping_v4_proc_init_net,
+        .exit = ping_v4_proc_exit_net,
 };
 
 int __init ping_proc_init(void)
 {
-        return register_pernet_subsys(&ping_net_ops);
+        return register_pernet_subsys(&ping_v4_net_ops);
 }
 
 void ping_proc_exit(void)
 {
-        unregister_pernet_subsys(&ping_net_ops);
+        unregister_pernet_subsys(&ping_v4_net_ops);
 }
 
 #endif
diff --git a/net/ipv4/proc.c b/net/ipv4/proc.c
index 2a5bf86d2415..6577a1149a47 100644
--- a/net/ipv4/proc.c
+++ b/net/ipv4/proc.c
@@ -273,6 +273,7 @@ static const struct snmp_mib snmp4_net_list[] = {
         SNMP_MIB_ITEM("TCPFastOpenListenOverflow", LINUX_MIB_TCPFASTOPENLISTENOVERFLOW),
         SNMP_MIB_ITEM("TCPFastOpenCookieReqd", LINUX_MIB_TCPFASTOPENCOOKIEREQD),
         SNMP_MIB_ITEM("TCPSpuriousRtxHostQueues", LINUX_MIB_TCPSPURIOUS_RTX_HOSTQUEUES),
+        SNMP_MIB_ITEM("LowLatencyRxPackets", LINUX_MIB_LOWLATENCYRXPACKETS),
         SNMP_MIB_SENTINEL
 };
 
diff --git a/net/ipv4/route.c b/net/ipv4/route.c
index d35bbf0cf404..a9a54a236832 100644
--- a/net/ipv4/route.c
+++ b/net/ipv4/route.c
@@ -565,10 +565,25 @@ static inline void rt_free(struct rtable *rt)
 
 static DEFINE_SPINLOCK(fnhe_lock);
 
+static void fnhe_flush_routes(struct fib_nh_exception *fnhe)
+{
+        struct rtable *rt;
+
+        rt = rcu_dereference(fnhe->fnhe_rth_input);
+        if (rt) {
+                RCU_INIT_POINTER(fnhe->fnhe_rth_input, NULL);
+                rt_free(rt);
+        }
+        rt = rcu_dereference(fnhe->fnhe_rth_output);
+        if (rt) {
+                RCU_INIT_POINTER(fnhe->fnhe_rth_output, NULL);
+                rt_free(rt);
+        }
+}
+
 static struct fib_nh_exception *fnhe_oldest(struct fnhe_hash_bucket *hash)
 {
         struct fib_nh_exception *fnhe, *oldest;
-        struct rtable *orig;
 
         oldest = rcu_dereference(hash->chain);
         for (fnhe = rcu_dereference(oldest->fnhe_next); fnhe;
@@ -576,11 +591,7 @@ static struct fib_nh_exception *fnhe_oldest(struct fnhe_hash_bucket *hash)
                 if (time_before(fnhe->fnhe_stamp, oldest->fnhe_stamp))
                         oldest = fnhe;
         }
-        orig = rcu_dereference(oldest->fnhe_rth);
-        if (orig) {
-                RCU_INIT_POINTER(oldest->fnhe_rth, NULL);
-                rt_free(orig);
-        }
+        fnhe_flush_routes(oldest);
         return oldest;
 }
 
@@ -594,11 +605,25 @@ static inline u32 fnhe_hashfun(__be32 daddr)
         return hval & (FNHE_HASH_SIZE - 1);
 }
 
+static void fill_route_from_fnhe(struct rtable *rt, struct fib_nh_exception *fnhe)
+{
+        rt->rt_pmtu = fnhe->fnhe_pmtu;
+        rt->dst.expires = fnhe->fnhe_expires;
+
+        if (fnhe->fnhe_gw) {
+                rt->rt_flags |= RTCF_REDIRECTED;
+                rt->rt_gateway = fnhe->fnhe_gw;
+                rt->rt_uses_gateway = 1;
+        }
+}
+
 static void update_or_create_fnhe(struct fib_nh *nh, __be32 daddr, __be32 gw,
                                   u32 pmtu, unsigned long expires)
 {
         struct fnhe_hash_bucket *hash;
         struct fib_nh_exception *fnhe;
+        struct rtable *rt;
+        unsigned int i;
         int depth;
         u32 hval = fnhe_hashfun(daddr);
 
@@ -627,8 +652,15 @@ static void update_or_create_fnhe(struct fib_nh *nh, __be32 daddr, __be32 gw,
                         fnhe->fnhe_gw = gw;
                 if (pmtu) {
                         fnhe->fnhe_pmtu = pmtu;
-                        fnhe->fnhe_expires = expires;
+                        fnhe->fnhe_expires = max(1UL, expires);
                 }
+                /* Update all cached dsts too */
+                rt = rcu_dereference(fnhe->fnhe_rth_input);
+                if (rt)
+                        fill_route_from_fnhe(rt, fnhe);
+                rt = rcu_dereference(fnhe->fnhe_rth_output);
+                if (rt)
+                        fill_route_from_fnhe(rt, fnhe);
         } else {
                 if (depth > FNHE_RECLAIM_DEPTH)
                         fnhe = fnhe_oldest(hash);
@@ -640,10 +672,27 @@ static void update_or_create_fnhe(struct fib_nh *nh, __be32 daddr, __be32 gw,
                         fnhe->fnhe_next = hash->chain;
                         rcu_assign_pointer(hash->chain, fnhe);
                 }
+                fnhe->fnhe_genid = fnhe_genid(dev_net(nh->nh_dev));
                 fnhe->fnhe_daddr = daddr;
                 fnhe->fnhe_gw = gw;
                 fnhe->fnhe_pmtu = pmtu;
                 fnhe->fnhe_expires = expires;
+
+                /* Exception created; mark the cached routes for the nexthop
+                 * stale, so anyone caching it rechecks if this exception
+                 * applies to them.
+                 */
+                rt = rcu_dereference(nh->nh_rth_input);
+                if (rt)
+                        rt->dst.obsolete = DST_OBSOLETE_KILL;
+
+                for_each_possible_cpu(i) {
+                        struct rtable __rcu **prt;
+                        prt = per_cpu_ptr(nh->nh_pcpu_rth_output, i);
+                        rt = rcu_dereference(*prt);
+                        if (rt)
+                                rt->dst.obsolete = DST_OBSOLETE_KILL;
+                }
         }
 
         fnhe->fnhe_stamp = jiffies;
@@ -922,12 +971,9 @@ static void __ip_rt_update_pmtu(struct rtable *rt, struct flowi4 *fl4, u32 mtu)
         if (mtu < ip_rt_min_pmtu)
                 mtu = ip_rt_min_pmtu;
 
-        if (!rt->rt_pmtu) {
-                dst->obsolete = DST_OBSOLETE_KILL;
-        } else {
-                rt->rt_pmtu = mtu;
-                dst->expires = max(1UL, jiffies + ip_rt_mtu_expires);
-        }
+        if (rt->rt_pmtu == mtu &&
+            time_before(jiffies, dst->expires - ip_rt_mtu_expires / 2))
+                return;
 
         rcu_read_lock();
         if (fib_lookup(dev_net(dst->dev), fl4, &res) == 0) {
@@ -1068,11 +1114,11 @@ static struct dst_entry *ipv4_dst_check(struct dst_entry *dst, u32 cookie)
          * DST_OBSOLETE_FORCE_CHK which forces validation calls down
          * into this function always.
          *
-         * When a PMTU/redirect information update invalidates a
-         * route, this is indicated by setting obsolete to
-         * DST_OBSOLETE_KILL.
+         * When a PMTU/redirect information update invalidates a route,
+         * this is indicated by setting obsolete to DST_OBSOLETE_KILL or
+         * DST_OBSOLETE_DEAD by dst_free().
          */
-        if (dst->obsolete == DST_OBSOLETE_KILL || rt_is_expired(rt))
+        if (dst->obsolete != DST_OBSOLETE_FORCE_CHK || rt_is_expired(rt))
                 return NULL;
         return dst;
 }
@@ -1214,34 +1260,36 @@ static bool rt_bind_exception(struct rtable *rt, struct fib_nh_exception *fnhe,
         spin_lock_bh(&fnhe_lock);
 
         if (daddr == fnhe->fnhe_daddr) {
-                struct rtable *orig = rcu_dereference(fnhe->fnhe_rth);
-                if (orig && rt_is_expired(orig)) {
+                struct rtable __rcu **porig;
+                struct rtable *orig;
+                int genid = fnhe_genid(dev_net(rt->dst.dev));
+
+                if (rt_is_input_route(rt))
+                        porig = &fnhe->fnhe_rth_input;
+                else
+                        porig = &fnhe->fnhe_rth_output;
+                orig = rcu_dereference(*porig);
+
+                if (fnhe->fnhe_genid != genid) {
+                        fnhe->fnhe_genid = genid;
                         fnhe->fnhe_gw = 0;
                         fnhe->fnhe_pmtu = 0;
                         fnhe->fnhe_expires = 0;
+                        fnhe_flush_routes(fnhe);
+                        orig = NULL;
                 }
-                if (fnhe->fnhe_pmtu) {
-                        unsigned long expires = fnhe->fnhe_expires;
-                        unsigned long diff = expires - jiffies;
-
-                        if (time_before(jiffies, expires)) {
-                                rt->rt_pmtu = fnhe->fnhe_pmtu;
-                                dst_set_expires(&rt->dst, diff);
-                        }
-                }
-                if (fnhe->fnhe_gw) {
-                        rt->rt_flags |= RTCF_REDIRECTED;
-                        rt->rt_gateway = fnhe->fnhe_gw;
-                        rt->rt_uses_gateway = 1;
-                } else if (!rt->rt_gateway)
+                fill_route_from_fnhe(rt, fnhe);
+                if (!rt->rt_gateway)
                         rt->rt_gateway = daddr;
 
-                rcu_assign_pointer(fnhe->fnhe_rth, rt);
-                if (orig)
-                        rt_free(orig);
+                if (!(rt->dst.flags & DST_NOCACHE)) {
+                        rcu_assign_pointer(*porig, rt);
+                        if (orig)
+                                rt_free(orig);
+                        ret = true;
+                }
 
                 fnhe->fnhe_stamp = jiffies;
-                ret = true;
         }
         spin_unlock_bh(&fnhe_lock);
 
@@ -1473,6 +1521,7 @@ static int __mkroute_input(struct sk_buff *skb,
                            struct in_device *in_dev,
                            __be32 daddr, __be32 saddr, u32 tos)
 {
+        struct fib_nh_exception *fnhe;
         struct rtable *rth;
         int err;
         struct in_device *out_dev;
@@ -1519,8 +1568,13 @@ static int __mkroute_input(struct sk_buff *skb,
                 }
         }
 
+        fnhe = find_exception(&FIB_RES_NH(*res), daddr);
         if (do_cache) {
-                rth = rcu_dereference(FIB_RES_NH(*res).nh_rth_input);
+                if (fnhe != NULL)
+                        rth = rcu_dereference(fnhe->fnhe_rth_input);
+                else
+                        rth = rcu_dereference(FIB_RES_NH(*res).nh_rth_input);
+
                 if (rt_cache_valid(rth)) {
                         skb_dst_set_noref(skb, &rth->dst);
                         goto out;
@@ -1548,7 +1602,7 @@ static int __mkroute_input(struct sk_buff *skb,
         rth->dst.input = ip_forward;
         rth->dst.output = ip_output;
 
-        rt_set_nexthop(rth, daddr, res, NULL, res->fi, res->type, itag);
+        rt_set_nexthop(rth, daddr, res, fnhe, res->fi, res->type, itag);
         skb_dst_set(skb, &rth->dst);
 out:
         err = 0;
@@ -1863,7 +1917,7 @@ static struct rtable *__mkroute_output(const struct fib_result *res,
 
                 fnhe = find_exception(nh, fl4->daddr);
                 if (fnhe)
-                        prth = &fnhe->fnhe_rth;
+                        prth = &fnhe->fnhe_rth_output;
                 else {
                         if (unlikely(fl4->flowi4_flags &
                                      FLOWI_FLAG_KNOWN_NH &&
@@ -2429,19 +2483,22 @@ 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_gc_elasticity __read_mostly    = 8;
 
-static int ipv4_sysctl_rtcache_flush(ctl_table *__ctl, int write,
+static int ipv4_sysctl_rtcache_flush(struct ctl_table *__ctl, int write,
                                         void __user *buffer,
                                         size_t *lenp, loff_t *ppos)
 {
+        struct net *net = (struct net *)__ctl->extra1;
+
         if (write) {
-                rt_cache_flush((struct net *)__ctl->extra1);
+                rt_cache_flush(net);
+                fnhe_genid_bump(net);
                 return 0;
         }
 
         return -EINVAL;
 }
 
-static ctl_table ipv4_route_table[] = {
+static struct ctl_table ipv4_route_table[] = {
         {
                 .procname       = "gc_thresh",
                 .data           = &ipv4_dst_ops.gc_thresh,
@@ -2609,6 +2666,7 @@ static __net_initdata struct pernet_operations sysctl_route_ops = {
 static __net_init int rt_genid_init(struct net *net)
 {
         atomic_set(&net->rt_genid, 0);
+        atomic_set(&net->fnhe_genid, 0);
         get_random_bytes(&net->ipv4.dev_addr_genid,
                          sizeof(net->ipv4.dev_addr_genid));
         return 0;
diff --git a/net/ipv4/sysctl_net_ipv4.c b/net/ipv4/sysctl_net_ipv4.c
index fa2f63fc453b..b2c123c44d69 100644
--- a/net/ipv4/sysctl_net_ipv4.c
+++ b/net/ipv4/sysctl_net_ipv4.c
@@ -49,13 +49,13 @@ static void set_local_port_range(int range[2])
 }
 
 /* Validate changes from /proc interface. */
-static int ipv4_local_port_range(ctl_table *table, int write,
+static int ipv4_local_port_range(struct ctl_table *table, int write,
                                  void __user *buffer,
                                  size_t *lenp, loff_t *ppos)
 {
         int ret;
         int range[2];
-        ctl_table tmp = {
+        struct ctl_table tmp = {
                 .data = &range,
                 .maxlen = sizeof(range),
                 .mode = table->mode,
@@ -100,7 +100,7 @@ static void set_ping_group_range(struct ctl_table *table, kgid_t low, kgid_t hig
 }
 
 /* Validate changes from /proc interface. */
-static int ipv4_ping_group_range(ctl_table *table, int write,
+static int ipv4_ping_group_range(struct ctl_table *table, int write,
                                  void __user *buffer,
                                  size_t *lenp, loff_t *ppos)
 {
@@ -108,7 +108,7 @@ static int ipv4_ping_group_range(ctl_table *table, int write,
         int ret;
         gid_t urange[2];
         kgid_t low, high;
-        ctl_table tmp = {
+        struct ctl_table tmp = {
                 .data = &urange,
                 .maxlen = sizeof(urange),
                 .mode = table->mode,
@@ -135,11 +135,11 @@ static int ipv4_ping_group_range(ctl_table *table, int write,
         return ret;
 }
 
-static int proc_tcp_congestion_control(ctl_table *ctl, int write,
+static int proc_tcp_congestion_control(struct ctl_table *ctl, int write,
                                        void __user *buffer, size_t *lenp, loff_t *ppos)
 {
         char val[TCP_CA_NAME_MAX];
-        ctl_table tbl = {
+        struct ctl_table tbl = {
                 .data = val,
                 .maxlen = TCP_CA_NAME_MAX,
         };
@@ -153,12 +153,12 @@ static int proc_tcp_congestion_control(ctl_table *ctl, int write,
         return ret;
 }
 
-static int proc_tcp_available_congestion_control(ctl_table *ctl,
+static int proc_tcp_available_congestion_control(struct ctl_table *ctl,
                                                  int write,
                                                  void __user *buffer, size_t *lenp,
                                                  loff_t *ppos)
 {
-        ctl_table tbl = { .maxlen = TCP_CA_BUF_MAX, };
+        struct ctl_table tbl = { .maxlen = TCP_CA_BUF_MAX, };
         int ret;
 
         tbl.data = kmalloc(tbl.maxlen, GFP_USER);
@@ -170,12 +170,12 @@ static int proc_tcp_available_congestion_control(ctl_table *ctl,
         return ret;
 }
 
-static int proc_allowed_congestion_control(ctl_table *ctl,
+static int proc_allowed_congestion_control(struct ctl_table *ctl,
                                            int write,
                                            void __user *buffer, size_t *lenp,
                                            loff_t *ppos)
 {
-        ctl_table tbl = { .maxlen = TCP_CA_BUF_MAX };
+        struct ctl_table tbl = { .maxlen = TCP_CA_BUF_MAX };
         int ret;
 
         tbl.data = kmalloc(tbl.maxlen, GFP_USER);
@@ -190,7 +190,7 @@ static int proc_allowed_congestion_control(ctl_table *ctl,
         return ret;
 }
 
-static int ipv4_tcp_mem(ctl_table *ctl, int write,
+static int ipv4_tcp_mem(struct ctl_table *ctl, int write,
                            void __user *buffer, size_t *lenp,
                            loff_t *ppos)
 {
@@ -201,7 +201,7 @@ static int ipv4_tcp_mem(ctl_table *ctl, int write,
         struct mem_cgroup *memcg;
 #endif
 
-        ctl_table tmp = {
+        struct ctl_table tmp = {
                 .data = &vec,
                 .maxlen = sizeof(vec),
                 .mode = ctl->mode,
@@ -233,10 +233,11 @@ static int ipv4_tcp_mem(ctl_table *ctl, int write,
         return 0;
 }
 
-static int proc_tcp_fastopen_key(ctl_table *ctl, int write, void __user *buffer,
-                                 size_t *lenp, loff_t *ppos)
+static int proc_tcp_fastopen_key(struct ctl_table *ctl, int write,
+                                 void __user *buffer, size_t *lenp,
+                                 loff_t *ppos)
 {
-        ctl_table tbl = { .maxlen = (TCP_FASTOPEN_KEY_LENGTH * 2 + 10) };
+        struct ctl_table tbl = { .maxlen = (TCP_FASTOPEN_KEY_LENGTH * 2 + 10) };
         struct tcp_fastopen_context *ctxt;
         int ret;
         u32  user_key[4]; /* 16 bytes, matching TCP_FASTOPEN_KEY_LENGTH */
diff --git a/net/ipv4/tcp.c b/net/ipv4/tcp.c
index ab450c099aa4..15cbfa94bd8e 100644
--- a/net/ipv4/tcp.c
+++ b/net/ipv4/tcp.c
@@ -279,6 +279,7 @@
 
 #include <asm/uaccess.h>
 #include <asm/ioctls.h>
+#include <net/ll_poll.h>
 
 int sysctl_tcp_fin_timeout __read_mostly = TCP_FIN_TIMEOUT;
 
@@ -436,6 +437,8 @@ unsigned int tcp_poll(struct file *file, struct socket *sock, poll_table *wait)
         struct sock *sk = sock->sk;
         const struct tcp_sock *tp = tcp_sk(sk);
 
+        sock_rps_record_flow(sk);
+
         sock_poll_wait(file, sk_sleep(sk), wait);
         if (sk->sk_state == TCP_LISTEN)
                 return inet_csk_listen_poll(sk);
@@ -1551,6 +1554,10 @@ int tcp_recvmsg(struct kiocb *iocb, struct sock *sk, struct msghdr *msg,
         struct sk_buff *skb;
         u32 urg_hole = 0;
 
+        if (sk_can_busy_loop(sk) && skb_queue_empty(&sk->sk_receive_queue) &&
+            (sk->sk_state == TCP_ESTABLISHED))
+                sk_busy_loop(sk, nonblock);
+
         lock_sock(sk);
 
         err = -ENOTCONN;
@@ -2875,249 +2882,9 @@ int compat_tcp_getsockopt(struct sock *sk, int level, int optname,
 EXPORT_SYMBOL(compat_tcp_getsockopt);
 #endif
 
-struct sk_buff *tcp_tso_segment(struct sk_buff *skb,
-        netdev_features_t features)
-{
-        struct sk_buff *segs = ERR_PTR(-EINVAL);
-        struct tcphdr *th;
-        unsigned int thlen;
-        unsigned int seq;
-        __be32 delta;
-        unsigned int oldlen;
-        unsigned int mss;
-        struct sk_buff *gso_skb = skb;
-        __sum16 newcheck;
-        bool ooo_okay, copy_destructor;
-
-        if (!pskb_may_pull(skb, sizeof(*th)))
-                goto out;
-
-        th = tcp_hdr(skb);
-        thlen = th->doff * 4;
-        if (thlen < sizeof(*th))
-                goto out;
-
-        if (!pskb_may_pull(skb, thlen))
-                goto out;
-
-        oldlen = (u16)~skb->len;
-        __skb_pull(skb, thlen);
-
-        mss = skb_shinfo(skb)->gso_size;
-        if (unlikely(skb->len <= mss))
-                goto out;
-
-        if (skb_gso_ok(skb, features | NETIF_F_GSO_ROBUST)) {
-                /* Packet is from an untrusted source, reset gso_segs. */
-                int type = skb_shinfo(skb)->gso_type;
-
-                if (unlikely(type &
-                             ~(SKB_GSO_TCPV4 |
-                               SKB_GSO_DODGY |
-                               SKB_GSO_TCP_ECN |
-                               SKB_GSO_TCPV6 |
-                               SKB_GSO_GRE |
-                               SKB_GSO_UDP_TUNNEL |
-                               0) ||
-                             !(type & (SKB_GSO_TCPV4 | SKB_GSO_TCPV6))))
-                        goto out;
-
-                skb_shinfo(skb)->gso_segs = DIV_ROUND_UP(skb->len, mss);
-
-                segs = NULL;
-                goto out;
-        }
-
-        copy_destructor = gso_skb->destructor == tcp_wfree;
-        ooo_okay = gso_skb->ooo_okay;
-        /* All segments but the first should have ooo_okay cleared */
-        skb->ooo_okay = 0;
-
-        segs = skb_segment(skb, features);
-        if (IS_ERR(segs))
-                goto out;
-
-        /* Only first segment might have ooo_okay set */
-        segs->ooo_okay = ooo_okay;
-
-        delta = htonl(oldlen + (thlen + mss));
-
-        skb = segs;
-        th = tcp_hdr(skb);
-        seq = ntohl(th->seq);
-
-        newcheck = ~csum_fold((__force __wsum)((__force u32)th->check +
-                                               (__force u32)delta));
-
-        do {
-                th->fin = th->psh = 0;
-                th->check = newcheck;
-
-                if (skb->ip_summed != CHECKSUM_PARTIAL)
-                        th->check =
-                             csum_fold(csum_partial(skb_transport_header(skb),
-                                                    thlen, skb->csum));
-
-                seq += mss;
-                if (copy_destructor) {
-                        skb->destructor = gso_skb->destructor;
-                        skb->sk = gso_skb->sk;
-                        /* {tcp|sock}_wfree() use exact truesize accounting :
-                         * sum(skb->truesize) MUST be exactly be gso_skb->truesize
-                         * So we account mss bytes of 'true size' for each segment.
-                         * The last segment will contain the remaining.
-                         */
-                        skb->truesize = mss;
-                        gso_skb->truesize -= mss;
-                }
-                skb = skb->next;
-                th = tcp_hdr(skb);
-
-                th->seq = htonl(seq);
-                th->cwr = 0;
-        } while (skb->next);
-
-        /* Following permits TCP Small Queues to work well with GSO :
-         * The callback to TCP stack will be called at the time last frag
-         * is freed at TX completion, and not right now when gso_skb
-         * is freed by GSO engine
-         */
-        if (copy_destructor) {
-                swap(gso_skb->sk, skb->sk);
-                swap(gso_skb->destructor, skb->destructor);
-                swap(gso_skb->truesize, skb->truesize);
-        }
-
-        delta = htonl(oldlen + (skb->tail - skb->transport_header) +
-                      skb->data_len);
-        th->check = ~csum_fold((__force __wsum)((__force u32)th->check +
-                                (__force u32)delta));
-        if (skb->ip_summed != CHECKSUM_PARTIAL)
-                th->check = csum_fold(csum_partial(skb_transport_header(skb),
-                                                   thlen, skb->csum));
-
-out:
-        return segs;
-}
-EXPORT_SYMBOL(tcp_tso_segment);
-
-struct sk_buff **tcp_gro_receive(struct sk_buff **head, struct sk_buff *skb)
-{
-        struct sk_buff **pp = NULL;
-        struct sk_buff *p;
-        struct tcphdr *th;
-        struct tcphdr *th2;
-        unsigned int len;
-        unsigned int thlen;
-        __be32 flags;
-        unsigned int mss = 1;
-        unsigned int hlen;
-        unsigned int off;
-        int flush = 1;
-        int i;
-
-        off = skb_gro_offset(skb);
-        hlen = off + sizeof(*th);
-        th = skb_gro_header_fast(skb, off);
-        if (skb_gro_header_hard(skb, hlen)) {
-                th = skb_gro_header_slow(skb, hlen, off);
-                if (unlikely(!th))
-                        goto out;
-        }
-
-        thlen = th->doff * 4;
-        if (thlen < sizeof(*th))
-                goto out;
-
-        hlen = off + thlen;
-        if (skb_gro_header_hard(skb, hlen)) {
-                th = skb_gro_header_slow(skb, hlen, off);
-                if (unlikely(!th))
-                        goto out;
-        }
-
-        skb_gro_pull(skb, thlen);
-
-        len = skb_gro_len(skb);
-        flags = tcp_flag_word(th);
-
-        for (; (p = *head); head = &p->next) {
-                if (!NAPI_GRO_CB(p)->same_flow)
-                        continue;
-
-                th2 = tcp_hdr(p);
-
-                if (*(u32 *)&th->source ^ *(u32 *)&th2->source) {
-                        NAPI_GRO_CB(p)->same_flow = 0;
-                        continue;
-                }
-
-                goto found;
-        }
-
-        goto out_check_final;
-
-found:
-        flush = NAPI_GRO_CB(p)->flush;
-        flush |= (__force int)(flags & TCP_FLAG_CWR);
-        flush |= (__force int)((flags ^ tcp_flag_word(th2)) &
-                  ~(TCP_FLAG_CWR | TCP_FLAG_FIN | TCP_FLAG_PSH));
-        flush |= (__force int)(th->ack_seq ^ th2->ack_seq);
-        for (i = sizeof(*th); i < thlen; i += 4)
-                flush |= *(u32 *)((u8 *)th + i) ^
-                         *(u32 *)((u8 *)th2 + i);
-
-        mss = skb_shinfo(p)->gso_size;
-
-        flush |= (len - 1) >= mss;
-        flush |= (ntohl(th2->seq) + skb_gro_len(p)) ^ ntohl(th->seq);
-
-        if (flush || skb_gro_receive(head, skb)) {
-                mss = 1;
-                goto out_check_final;
-        }
-
-        p = *head;
-        th2 = tcp_hdr(p);
-        tcp_flag_word(th2) |= flags & (TCP_FLAG_FIN | TCP_FLAG_PSH);
-
-out_check_final:
-        flush = len < mss;
-        flush |= (__force int)(flags & (TCP_FLAG_URG | TCP_FLAG_PSH |
-                                        TCP_FLAG_RST | TCP_FLAG_SYN |
-                                        TCP_FLAG_FIN));
-
-        if (p && (!NAPI_GRO_CB(skb)->same_flow || flush))
-                pp = head;
-
-out:
-        NAPI_GRO_CB(skb)->flush |= flush;
-
-        return pp;
-}
-EXPORT_SYMBOL(tcp_gro_receive);
-
-int tcp_gro_complete(struct sk_buff *skb)
-{
-        struct tcphdr *th = tcp_hdr(skb);
-
-        skb->csum_start = skb_transport_header(skb) - skb->head;
-        skb->csum_offset = offsetof(struct tcphdr, check);
-        skb->ip_summed = CHECKSUM_PARTIAL;
-
-        skb_shinfo(skb)->gso_segs = NAPI_GRO_CB(skb)->count;
-
-        if (th->cwr)
-                skb_shinfo(skb)->gso_type |= SKB_GSO_TCP_ECN;
-
-        return 0;
-}
-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 DEFINE_SPINLOCK(tcp_md5sig_pool_lock);
+static struct tcp_md5sig_pool __percpu *tcp_md5sig_pool __read_mostly;
+static DEFINE_MUTEX(tcp_md5sig_mutex);
 
 static void __tcp_free_md5sig_pool(struct tcp_md5sig_pool __percpu *pool)
 {
@@ -3132,30 +2899,14 @@ static void __tcp_free_md5sig_pool(struct tcp_md5sig_pool __percpu *pool)
         free_percpu(pool);
 }
 
-void tcp_free_md5sig_pool(void)
-{
-        struct tcp_md5sig_pool __percpu *pool = NULL;
-
-        spin_lock_bh(&tcp_md5sig_pool_lock);
-        if (--tcp_md5sig_users == 0) {
-                pool = tcp_md5sig_pool;
-                tcp_md5sig_pool = NULL;
-        }
-        spin_unlock_bh(&tcp_md5sig_pool_lock);
-        if (pool)
-                __tcp_free_md5sig_pool(pool);
-}
-EXPORT_SYMBOL(tcp_free_md5sig_pool);
-
-static struct tcp_md5sig_pool __percpu *
-__tcp_alloc_md5sig_pool(struct sock *sk)
+static void __tcp_alloc_md5sig_pool(void)
 {
         int cpu;
         struct tcp_md5sig_pool __percpu *pool;
 
         pool = alloc_percpu(struct tcp_md5sig_pool);
         if (!pool)
-                return NULL;
+                return;
 
         for_each_possible_cpu(cpu) {
                 struct crypto_hash *hash;
@@ -3166,53 +2917,27 @@ __tcp_alloc_md5sig_pool(struct sock *sk)
 
                 per_cpu_ptr(pool, cpu)->md5_desc.tfm = hash;
         }
-        return pool;
+        /* before setting tcp_md5sig_pool, we must commit all writes
+         * to memory. See ACCESS_ONCE() in tcp_get_md5sig_pool()
+         */
+        smp_wmb();
+        tcp_md5sig_pool = pool;
+        return;
 out_free:
         __tcp_free_md5sig_pool(pool);
-        return NULL;
 }
 
-struct tcp_md5sig_pool __percpu *tcp_alloc_md5sig_pool(struct sock *sk)
+bool tcp_alloc_md5sig_pool(void)
 {
-        struct tcp_md5sig_pool __percpu *pool;
-        bool alloc = false;
-
-retry:
-        spin_lock_bh(&tcp_md5sig_pool_lock);
-        pool = tcp_md5sig_pool;
-        if (tcp_md5sig_users++ == 0) {
-                alloc = true;
-                spin_unlock_bh(&tcp_md5sig_pool_lock);
-        } else if (!pool) {
-                tcp_md5sig_users--;
-                spin_unlock_bh(&tcp_md5sig_pool_lock);
-                cpu_relax();
-                goto retry;
-        } else
-                spin_unlock_bh(&tcp_md5sig_pool_lock);
-
-        if (alloc) {
-                /* we cannot hold spinlock here because this may sleep. */
-                struct tcp_md5sig_pool __percpu *p;
-
-                p = __tcp_alloc_md5sig_pool(sk);
-                spin_lock_bh(&tcp_md5sig_pool_lock);
-                if (!p) {
-                        tcp_md5sig_users--;
-                        spin_unlock_bh(&tcp_md5sig_pool_lock);
-                        return NULL;
-                }
-                pool = tcp_md5sig_pool;
-                if (pool) {
-                        /* oops, it has already been assigned. */
-                        spin_unlock_bh(&tcp_md5sig_pool_lock);
-                        __tcp_free_md5sig_pool(p);
-                } else {
-                        tcp_md5sig_pool = pool = p;
-                        spin_unlock_bh(&tcp_md5sig_pool_lock);
-                }
+        if (unlikely(!tcp_md5sig_pool)) {
+                mutex_lock(&tcp_md5sig_mutex);
+
+                if (!tcp_md5sig_pool)
+                        __tcp_alloc_md5sig_pool();
+
+                mutex_unlock(&tcp_md5sig_mutex);
         }
-        return pool;
+        return tcp_md5sig_pool != NULL;
 }
 EXPORT_SYMBOL(tcp_alloc_md5sig_pool);
 
@@ -3229,28 +2954,15 @@ struct tcp_md5sig_pool *tcp_get_md5sig_pool(void)
         struct tcp_md5sig_pool __percpu *p;
 
         local_bh_disable();
-
-        spin_lock(&tcp_md5sig_pool_lock);
-        p = tcp_md5sig_pool;
+        p = ACCESS_ONCE(tcp_md5sig_pool);
         if (p)
-                tcp_md5sig_users++;
-        spin_unlock(&tcp_md5sig_pool_lock);
-
-        if (p)
-                return this_cpu_ptr(p);
+                return __this_cpu_ptr(p);
 
         local_bh_enable();
         return NULL;
 }
 EXPORT_SYMBOL(tcp_get_md5sig_pool);
 
-void tcp_put_md5sig_pool(void)
-{
-        local_bh_enable();
-        tcp_free_md5sig_pool();
-}
-EXPORT_SYMBOL(tcp_put_md5sig_pool);
-
 int tcp_md5_hash_header(struct tcp_md5sig_pool *hp,
                         const struct tcphdr *th)
 {
diff --git a/net/ipv4/tcp_input.c b/net/ipv4/tcp_input.c
index 9c6225780bd5..28af45abe062 100644
--- a/net/ipv4/tcp_input.c
+++ b/net/ipv4/tcp_input.c
@@ -347,24 +347,13 @@ static void tcp_grow_window(struct sock *sk, const struct sk_buff *skb)
 }
 
 /* 3. Tuning rcvbuf, when connection enters established state. */
-
 static void tcp_fixup_rcvbuf(struct sock *sk)
 {
         u32 mss = tcp_sk(sk)->advmss;
-        u32 icwnd = TCP_DEFAULT_INIT_RCVWND;
         int rcvmem;
 
-        /* Limit to 10 segments if mss <= 1460,
-         * or 14600/mss segments, with a minimum of two segments.
-         */
-        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;
-
-        rcvmem *= icwnd;
+        rcvmem = 2 * SKB_TRUESIZE(mss + MAX_TCP_HEADER) *
+                 tcp_default_init_rwnd(mss);
 
         if (sk->sk_rcvbuf < rcvmem)
                 sk->sk_rcvbuf = min(rcvmem, sysctl_tcp_rmem[2]);
@@ -1257,8 +1246,6 @@ static bool tcp_shifted_skb(struct sock *sk, struct sk_buff *skb,
 
         if (skb == tp->retransmit_skb_hint)
                 tp->retransmit_skb_hint = prev;
-        if (skb == tp->scoreboard_skb_hint)
-                tp->scoreboard_skb_hint = prev;
         if (skb == tp->lost_skb_hint) {
                 tp->lost_skb_hint = prev;
                 tp->lost_cnt_hint -= tcp_skb_pcount(prev);
@@ -1966,20 +1953,6 @@ static bool tcp_pause_early_retransmit(struct sock *sk, int flag)
         return true;
 }
 
-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(const struct sock *sk)
-{
-        const struct tcp_sock *tp = tcp_sk(sk);
-
-        return tp->packets_out &&
-               tcp_skb_timedout(sk, tcp_write_queue_head(sk));
-}
-
 /* Linux NewReno/SACK/FACK/ECN state machine.
  * --------------------------------------
  *
@@ -2086,12 +2059,6 @@ static bool tcp_time_to_recover(struct sock *sk, int flag)
         if (tcp_dupack_heuristics(tp) > tp->reordering)
                 return true;
 
-        /* Trick#3 : when we use RFC2988 timer restart, fast
-         * retransmit can be triggered by timeout of queue head.
-         */
-        if (tcp_is_fack(tp) && tcp_head_timedout(sk))
-                return true;
-
         /* Trick#4: It is still not OK... But will it be useful to delay
          * recovery more?
          */
@@ -2128,44 +2095,6 @@ static bool tcp_time_to_recover(struct sock *sk, int flag)
         return false;
 }
 
-/* New heuristics: it is possible only after we switched to restart timer
- * each time when something is ACKed. Hence, we can detect timed out packets
- * during fast retransmit without falling to slow start.
- *
- * Usefulness of this as is very questionable, since we should know which of
- * the segments is the next to timeout which is relatively expensive to find
- * in general case unless we add some data structure just for that. The
- * current approach certainly won't find the right one too often and when it
- * finally does find _something_ it usually marks large part of the window
- * right away (because a retransmission with a larger timestamp blocks the
- * loop from advancing). -ij
- */
-static void tcp_timeout_skbs(struct sock *sk)
-{
-        struct tcp_sock *tp = tcp_sk(sk);
-        struct sk_buff *skb;
-
-        if (!tcp_is_fack(tp) || !tcp_head_timedout(sk))
-                return;
-
-        skb = tp->scoreboard_skb_hint;
-        if (tp->scoreboard_skb_hint == NULL)
-                skb = tcp_write_queue_head(sk);
-
-        tcp_for_write_queue_from(skb, sk) {
-                if (skb == tcp_send_head(sk))
-                        break;
-                if (!tcp_skb_timedout(sk, skb))
-                        break;
-
-                tcp_skb_mark_lost(tp, skb);
-        }
-
-        tp->scoreboard_skb_hint = skb;
-
-        tcp_verify_left_out(tp);
-}
-
 /* Detect loss in event "A" above by marking head of queue up as lost.
  * For FACK or non-SACK(Reno) senders, the first "packets" number of segments
  * are considered lost. For RFC3517 SACK, a segment is considered lost if it
@@ -2251,8 +2180,6 @@ static void tcp_update_scoreboard(struct sock *sk, int fast_rexmit)
                 else if (fast_rexmit)
                         tcp_mark_head_lost(sk, 1, 1);
         }
-
-        tcp_timeout_skbs(sk);
 }
 
 /* CWND moderation, preventing bursts due to too big ACKs
@@ -2307,10 +2234,22 @@ static void DBGUNDO(struct sock *sk, const char *msg)
 #define DBGUNDO(x...) do { } while (0)
 #endif
 
-static void tcp_undo_cwr(struct sock *sk, const bool undo_ssthresh)
+static void tcp_undo_cwnd_reduction(struct sock *sk, bool unmark_loss)
 {
         struct tcp_sock *tp = tcp_sk(sk);
 
+        if (unmark_loss) {
+                struct sk_buff *skb;
+
+                tcp_for_write_queue(skb, sk) {
+                        if (skb == tcp_send_head(sk))
+                                break;
+                        TCP_SKB_CB(skb)->sacked &= ~TCPCB_LOST;
+                }
+                tp->lost_out = 0;
+                tcp_clear_all_retrans_hints(tp);
+        }
+
         if (tp->prior_ssthresh) {
                 const struct inet_connection_sock *icsk = inet_csk(sk);
 
@@ -2319,7 +2258,7 @@ static void tcp_undo_cwr(struct sock *sk, const bool undo_ssthresh)
                 else
                         tp->snd_cwnd = max(tp->snd_cwnd, tp->snd_ssthresh << 1);
 
-                if (undo_ssthresh && tp->prior_ssthresh > tp->snd_ssthresh) {
+                if (tp->prior_ssthresh > tp->snd_ssthresh) {
                         tp->snd_ssthresh = tp->prior_ssthresh;
                         TCP_ECN_withdraw_cwr(tp);
                 }
@@ -2327,6 +2266,7 @@ static void tcp_undo_cwr(struct sock *sk, const bool undo_ssthresh)
                 tp->snd_cwnd = max(tp->snd_cwnd, tp->snd_ssthresh);
         }
         tp->snd_cwnd_stamp = tcp_time_stamp;
+        tp->undo_marker = 0;
 }
 
 static inline bool tcp_may_undo(const struct tcp_sock *tp)
@@ -2346,14 +2286,13 @@ static bool tcp_try_undo_recovery(struct sock *sk)
                  * or our original transmission succeeded.
                  */
                 DBGUNDO(sk, inet_csk(sk)->icsk_ca_state == TCP_CA_Loss ? "loss" : "retrans");
-                tcp_undo_cwr(sk, true);
+                tcp_undo_cwnd_reduction(sk, false);
                 if (inet_csk(sk)->icsk_ca_state == TCP_CA_Loss)
                         mib_idx = LINUX_MIB_TCPLOSSUNDO;
                 else
                         mib_idx = LINUX_MIB_TCPFULLUNDO;
 
                 NET_INC_STATS_BH(sock_net(sk), mib_idx);
-                tp->undo_marker = 0;
         }
         if (tp->snd_una == tp->high_seq && tcp_is_reno(tp)) {
                 /* Hold old state until something *above* high_seq
@@ -2367,16 +2306,17 @@ static bool tcp_try_undo_recovery(struct sock *sk)
 }
 
 /* Try to undo cwnd reduction, because D-SACKs acked all retransmitted data */
-static void tcp_try_undo_dsack(struct sock *sk)
+static bool tcp_try_undo_dsack(struct sock *sk)
 {
         struct tcp_sock *tp = tcp_sk(sk);
 
         if (tp->undo_marker && !tp->undo_retrans) {
                 DBGUNDO(sk, "D-SACK");
-                tcp_undo_cwr(sk, true);
-                tp->undo_marker = 0;
+                tcp_undo_cwnd_reduction(sk, false);
                 NET_INC_STATS_BH(sock_net(sk), LINUX_MIB_TCPDSACKUNDO);
+                return true;
         }
+        return false;
 }
 
 /* We can clear retrans_stamp when there are no retransmissions in the
@@ -2408,60 +2348,20 @@ static bool tcp_any_retrans_done(const struct sock *sk)
         return false;
 }
 
-/* Undo during fast recovery after partial ACK. */
-
-static int tcp_try_undo_partial(struct sock *sk, int acked)
-{
-        struct tcp_sock *tp = tcp_sk(sk);
-        /* Partial ACK arrived. Force Hoe's retransmit. */
-        int failed = tcp_is_reno(tp) || (tcp_fackets_out(tp) > tp->reordering);
-
-        if (tcp_may_undo(tp)) {
-                /* Plain luck! Hole if filled with delayed
-                 * packet, rather than with a retransmit.
-                 */
-                if (!tcp_any_retrans_done(sk))
-                        tp->retrans_stamp = 0;
-
-                tcp_update_reordering(sk, tcp_fackets_out(tp) + acked, 1);
-
-                DBGUNDO(sk, "Hoe");
-                tcp_undo_cwr(sk, false);
-                NET_INC_STATS_BH(sock_net(sk), LINUX_MIB_TCPPARTIALUNDO);
-
-                /* So... Do not make Hoe's retransmit yet.
-                 * If the first packet was delayed, the rest
-                 * ones are most probably delayed as well.
-                 */
-                failed = 0;
-        }
-        return failed;
-}
-
 /* Undo during loss recovery after partial ACK or using F-RTO. */
 static bool tcp_try_undo_loss(struct sock *sk, bool frto_undo)
 {
         struct tcp_sock *tp = tcp_sk(sk);
 
         if (frto_undo || tcp_may_undo(tp)) {
-                struct sk_buff *skb;
-                tcp_for_write_queue(skb, sk) {
-                        if (skb == tcp_send_head(sk))
-                                break;
-                        TCP_SKB_CB(skb)->sacked &= ~TCPCB_LOST;
-                }
-
-                tcp_clear_all_retrans_hints(tp);
+                tcp_undo_cwnd_reduction(sk, true);
 
                 DBGUNDO(sk, "partial loss");
-                tp->lost_out = 0;
-                tcp_undo_cwr(sk, true);
                 NET_INC_STATS_BH(sock_net(sk), LINUX_MIB_TCPLOSSUNDO);
                 if (frto_undo)
                         NET_INC_STATS_BH(sock_net(sk),
                                          LINUX_MIB_TCPSPURIOUSRTOS);
                 inet_csk(sk)->icsk_retransmits = 0;
-                tp->undo_marker = 0;
                 if (frto_undo || tcp_is_sack(tp))
                         tcp_set_ca_state(sk, TCP_CA_Open);
                 return true;
@@ -2494,12 +2394,14 @@ static void tcp_init_cwnd_reduction(struct sock *sk, const bool set_ssthresh)
         TCP_ECN_queue_cwr(tp);
 }
 
-static void tcp_cwnd_reduction(struct sock *sk, int newly_acked_sacked,
+static void tcp_cwnd_reduction(struct sock *sk, const int prior_unsacked,
                                int fast_rexmit)
 {
         struct tcp_sock *tp = tcp_sk(sk);
         int sndcnt = 0;
         int delta = tp->snd_ssthresh - tcp_packets_in_flight(tp);
+        int newly_acked_sacked = prior_unsacked -
+                                 (tp->packets_out - tp->sacked_out);
 
         tp->prr_delivered += newly_acked_sacked;
         if (tcp_packets_in_flight(tp) > tp->snd_ssthresh) {
@@ -2556,7 +2458,7 @@ static void tcp_try_keep_open(struct sock *sk)
         }
 }
 
-static void tcp_try_to_open(struct sock *sk, int flag, int newly_acked_sacked)
+static void tcp_try_to_open(struct sock *sk, int flag, const int prior_unsacked)
 {
         struct tcp_sock *tp = tcp_sk(sk);
 
@@ -2573,7 +2475,7 @@ static void tcp_try_to_open(struct sock *sk, int flag, int newly_acked_sacked)
                 if (inet_csk(sk)->icsk_ca_state != TCP_CA_Open)
                         tcp_moderate_cwnd(tp);
         } else {
-                tcp_cwnd_reduction(sk, newly_acked_sacked, 0);
+                tcp_cwnd_reduction(sk, prior_unsacked, 0);
         }
 }
 
@@ -2731,6 +2633,40 @@ static void tcp_process_loss(struct sock *sk, int flag, bool is_dupack)
         tcp_xmit_retransmit_queue(sk);
 }
 
+/* Undo during fast recovery after partial ACK. */
+static bool tcp_try_undo_partial(struct sock *sk, const int acked,
+                                 const int prior_unsacked)
+{
+        struct tcp_sock *tp = tcp_sk(sk);
+
+        if (tp->undo_marker && tcp_packet_delayed(tp)) {
+                /* Plain luck! Hole if filled with delayed
+                 * packet, rather than with a retransmit.
+                 */
+                tcp_update_reordering(sk, tcp_fackets_out(tp) + acked, 1);
+
+                /* We are getting evidence that the reordering degree is higher
+                 * than we realized. If there are no retransmits out then we
+                 * can undo. Otherwise we clock out new packets but do not
+                 * mark more packets lost or retransmit more.
+                 */
+                if (tp->retrans_out) {
+                        tcp_cwnd_reduction(sk, prior_unsacked, 0);
+                        return true;
+                }
+
+                if (!tcp_any_retrans_done(sk))
+                        tp->retrans_stamp = 0;
+
+                DBGUNDO(sk, "partial recovery");
+                tcp_undo_cwnd_reduction(sk, true);
+                NET_INC_STATS_BH(sock_net(sk), LINUX_MIB_TCPPARTIALUNDO);
+                tcp_try_keep_open(sk);
+                return true;
+        }
+        return false;
+}
+
 /* 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
@@ -2742,15 +2678,14 @@ static void tcp_process_loss(struct sock *sk, int flag, bool is_dupack)
  * 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 prior_sacked, int prior_packets,
+static void tcp_fastretrans_alert(struct sock *sk, const int acked,
+                                  const int prior_unsacked,
                                   bool is_dupack, int flag)
 {
         struct inet_connection_sock *icsk = inet_csk(sk);
         struct tcp_sock *tp = tcp_sk(sk);
-        int do_lost = is_dupack || ((flag & FLAG_DATA_SACKED) &&
+        bool do_lost = is_dupack || ((flag & FLAG_DATA_SACKED) &&
                                     (tcp_fackets_out(tp) > tp->reordering));
-        int newly_acked_sacked = 0;
         int fast_rexmit = 0;
 
         if (WARN_ON(!tp->packets_out && tp->sacked_out))
@@ -2802,10 +2737,17 @@ static void tcp_fastretrans_alert(struct sock *sk, int pkts_acked,
                 if (!(flag & FLAG_SND_UNA_ADVANCED)) {
                         if (tcp_is_reno(tp) && is_dupack)
                                 tcp_add_reno_sack(sk);
-                } else
-                        do_lost = tcp_try_undo_partial(sk, pkts_acked);
-                newly_acked_sacked = prior_packets - tp->packets_out +
-                                     tp->sacked_out - prior_sacked;
+                } else {
+                        if (tcp_try_undo_partial(sk, acked, prior_unsacked))
+                                return;
+                        /* Partial ACK arrived. Force fast retransmit. */
+                        do_lost = tcp_is_reno(tp) ||
+                                  tcp_fackets_out(tp) > tp->reordering;
+                }
+                if (tcp_try_undo_dsack(sk)) {
+                        tcp_try_keep_open(sk);
+                        return;
+                }
                 break;
         case TCP_CA_Loss:
                 tcp_process_loss(sk, flag, is_dupack);
@@ -2819,14 +2761,12 @@ static void tcp_fastretrans_alert(struct sock *sk, int pkts_acked,
                         if (is_dupack)
                                 tcp_add_reno_sack(sk);
                 }
-                newly_acked_sacked = prior_packets - tp->packets_out +
-                                     tp->sacked_out - prior_sacked;
 
                 if (icsk->icsk_ca_state <= TCP_CA_Disorder)
                         tcp_try_undo_dsack(sk);
 
                 if (!tcp_time_to_recover(sk, flag)) {
-                        tcp_try_to_open(sk, flag, newly_acked_sacked);
+                        tcp_try_to_open(sk, flag, prior_unsacked);
                         return;
                 }
 
@@ -2846,9 +2786,9 @@ static void tcp_fastretrans_alert(struct sock *sk, int pkts_acked,
                 fast_rexmit = 1;
         }
 
-        if (do_lost || (tcp_is_fack(tp) && tcp_head_timedout(sk)))
+        if (do_lost)
                 tcp_update_scoreboard(sk, fast_rexmit);
-        tcp_cwnd_reduction(sk, newly_acked_sacked, fast_rexmit);
+        tcp_cwnd_reduction(sk, prior_unsacked, fast_rexmit);
         tcp_xmit_retransmit_queue(sk);
 }
 
@@ -3079,7 +3019,6 @@ static int tcp_clean_rtx_queue(struct sock *sk, int prior_fackets,
 
                 tcp_unlink_write_queue(skb, sk);
                 sk_wmem_free_skb(sk, skb);
-                tp->scoreboard_skb_hint = NULL;
                 if (skb == tp->retransmit_skb_hint)
                         tp->retransmit_skb_hint = NULL;
                 if (skb == tp->lost_skb_hint)
@@ -3333,9 +3272,8 @@ static int tcp_ack(struct sock *sk, const struct sk_buff *skb, int flag)
         u32 prior_in_flight;
         u32 prior_fackets;
         int prior_packets = tp->packets_out;
-        int prior_sacked = tp->sacked_out;
-        int pkts_acked = 0;
-        int previous_packets_out = 0;
+        const int prior_unsacked = tp->packets_out - tp->sacked_out;
+        int acked = 0; /* Number of packets newly acked */
 
         /* If the ack is older than previous acks
          * then we can probably ignore it.
@@ -3410,18 +3348,17 @@ static int tcp_ack(struct sock *sk, const struct sk_buff *skb, int flag)
                 goto no_queue;
 
         /* See if we can take anything off of the retransmit queue. */
-        previous_packets_out = tp->packets_out;
+        acked = tp->packets_out;
         flag |= tcp_clean_rtx_queue(sk, prior_fackets, prior_snd_una);
-
-        pkts_acked = previous_packets_out - tp->packets_out;
+        acked -= tp->packets_out;
 
         if (tcp_ack_is_dubious(sk, flag)) {
                 /* Advance CWND, if state allows this. */
                 if ((flag & FLAG_DATA_ACKED) && tcp_may_raise_cwnd(sk, flag))
                         tcp_cong_avoid(sk, ack, prior_in_flight);
                 is_dupack = !(flag & (FLAG_SND_UNA_ADVANCED | FLAG_NOT_DUP));
-                tcp_fastretrans_alert(sk, pkts_acked, prior_sacked,
-                                      prior_packets, is_dupack, flag);
+                tcp_fastretrans_alert(sk, acked, prior_unsacked,
+                                      is_dupack, flag);
         } else {
                 if (flag & FLAG_DATA_ACKED)
                         tcp_cong_avoid(sk, ack, prior_in_flight);
@@ -3443,8 +3380,8 @@ static int tcp_ack(struct sock *sk, const struct sk_buff *skb, int flag)
 no_queue:
         /* If data was DSACKed, see if we can undo a cwnd reduction. */
         if (flag & FLAG_DSACKING_ACK)
-                tcp_fastretrans_alert(sk, pkts_acked, prior_sacked,
-                                      prior_packets, is_dupack, flag);
+                tcp_fastretrans_alert(sk, acked, prior_unsacked,
+                                      is_dupack, flag);
         /* If this ack opens up a zero window, clear backoff.  It was
          * being used to time the probes, and is probably far higher than
          * it needs to be for normal retransmission.
@@ -3466,8 +3403,8 @@ old_ack:
          */
         if (TCP_SKB_CB(skb)->sacked) {
                 flag |= tcp_sacktag_write_queue(sk, skb, prior_snd_una);
-                tcp_fastretrans_alert(sk, pkts_acked, prior_sacked,
-                                      prior_packets, is_dupack, flag);
+                tcp_fastretrans_alert(sk, acked, prior_unsacked,
+                                      is_dupack, flag);
         }
 
         SOCK_DEBUG(sk, "Ack %u before %u:%u\n", ack, tp->snd_una, tp->snd_nxt);
@@ -3780,6 +3717,7 @@ void tcp_reset(struct sock *sk)
 static void tcp_fin(struct sock *sk)
 {
         struct tcp_sock *tp = tcp_sk(sk);
+        const struct dst_entry *dst;
 
         inet_csk_schedule_ack(sk);
 
@@ -3791,7 +3729,9 @@ static void tcp_fin(struct sock *sk)
         case TCP_ESTABLISHED:
                 /* Move to CLOSE_WAIT */
                 tcp_set_state(sk, TCP_CLOSE_WAIT);
-                inet_csk(sk)->icsk_ack.pingpong = 1;
+                dst = __sk_dst_get(sk);
+                if (!dst || !dst_metric(dst, RTAX_QUICKACK))
+                        inet_csk(sk)->icsk_ack.pingpong = 1;
                 break;
 
         case TCP_CLOSE_WAIT:
@@ -5601,6 +5541,7 @@ int tcp_rcv_state_process(struct sock *sk, struct sk_buff *skb,
         struct inet_connection_sock *icsk = inet_csk(sk);
         struct request_sock *req;
         int queued = 0;
+        bool acceptable;
 
         tp->rx_opt.saw_tstamp = 0;
 
@@ -5671,157 +5612,147 @@ int tcp_rcv_state_process(struct sock *sk, struct sk_buff *skb,
                 return 0;
 
         /* step 5: check the ACK field */
-        if (true) {
-                int acceptable = tcp_ack(sk, skb, FLAG_SLOWPATH |
-                                                  FLAG_UPDATE_TS_RECENT) > 0;
-
-                switch (sk->sk_state) {
-                case TCP_SYN_RECV:
-                        if (acceptable) {
-                                /* Once we leave TCP_SYN_RECV, we no longer
-                                 * need req so release it.
-                                 */
-                                if (req) {
-                                        tcp_synack_rtt_meas(sk, req);
-                                        tp->total_retrans = req->num_retrans;
-
-                                        reqsk_fastopen_remove(sk, req, false);
-                                } else {
-                                        /* Make sure socket is routed, for
-                                         * correct metrics.
-                                         */
-                                        icsk->icsk_af_ops->rebuild_header(sk);
-                                        tcp_init_congestion_control(sk);
+        acceptable = tcp_ack(sk, skb, FLAG_SLOWPATH |
+                                      FLAG_UPDATE_TS_RECENT) > 0;
 
-                                        tcp_mtup_init(sk);
-                                        tcp_init_buffer_space(sk);
-                                        tp->copied_seq = tp->rcv_nxt;
-                                }
-                                smp_mb();
-                                tcp_set_state(sk, TCP_ESTABLISHED);
-                                sk->sk_state_change(sk);
-
-                                /* Note, that this wakeup is only for marginal
-                                 * crossed SYN case. Passively open sockets
-                                 * are not waked up, because sk->sk_sleep ==
-                                 * NULL and sk->sk_socket == NULL.
-                                 */
-                                if (sk->sk_socket)
-                                        sk_wake_async(sk,
-                                                      SOCK_WAKE_IO, POLL_OUT);
-
-                                tp->snd_una = TCP_SKB_CB(skb)->ack_seq;
-                                tp->snd_wnd = ntohs(th->window) <<
-                                              tp->rx_opt.snd_wscale;
-                                tcp_init_wl(tp, TCP_SKB_CB(skb)->seq);
-
-                                if (tp->rx_opt.tstamp_ok)
-                                        tp->advmss -= TCPOLEN_TSTAMP_ALIGNED;
-
-                                if (req) {
-                                        /* Re-arm the timer because data may
-                                         * have been sent out. This is similar
-                                         * to the regular data transmission case
-                                         * when new data has just been ack'ed.
-                                         *
-                                         * (TFO) - we could try to be more
-                                         * aggressive and retranmitting any data
-                                         * sooner based on when they were sent
-                                         * out.
-                                         */
-                                        tcp_rearm_rto(sk);
-                                } else
-                                        tcp_init_metrics(sk);
+        switch (sk->sk_state) {
+        case TCP_SYN_RECV:
+                if (!acceptable)
+                        return 1;
 
-                                /* Prevent spurious tcp_cwnd_restart() on
-                                 * first data packet.
-                                 */
-                                tp->lsndtime = tcp_time_stamp;
+                /* Once we leave TCP_SYN_RECV, we no longer need req
+                 * so release it.
+                 */
+                if (req) {
+                        tcp_synack_rtt_meas(sk, req);
+                        tp->total_retrans = req->num_retrans;
 
-                                tcp_initialize_rcv_mss(sk);
-                                tcp_fast_path_on(tp);
-                        } else {
-                                return 1;
-                        }
-                        break;
+                        reqsk_fastopen_remove(sk, req, false);
+                } else {
+                        /* Make sure socket is routed, for correct metrics. */
+                        icsk->icsk_af_ops->rebuild_header(sk);
+                        tcp_init_congestion_control(sk);
+
+                        tcp_mtup_init(sk);
+                        tcp_init_buffer_space(sk);
+                        tp->copied_seq = tp->rcv_nxt;
+                }
+                smp_mb();
+                tcp_set_state(sk, TCP_ESTABLISHED);
+                sk->sk_state_change(sk);
+
+                /* Note, that this wakeup is only for marginal crossed SYN case.
+                 * Passively open sockets are not waked up, because
+                 * sk->sk_sleep == NULL and sk->sk_socket == NULL.
+                 */
+                if (sk->sk_socket)
+                        sk_wake_async(sk, SOCK_WAKE_IO, POLL_OUT);
+
+                tp->snd_una = TCP_SKB_CB(skb)->ack_seq;
+                tp->snd_wnd = ntohs(th->window) << tp->rx_opt.snd_wscale;
+                tcp_init_wl(tp, TCP_SKB_CB(skb)->seq);
 
-                case TCP_FIN_WAIT1:
-                        /* If we enter the TCP_FIN_WAIT1 state and we are a
-                         * Fast Open socket and this is the first acceptable
-                         * ACK we have received, this would have acknowledged
-                         * our SYNACK so stop the SYNACK timer.
+                if (tp->rx_opt.tstamp_ok)
+                        tp->advmss -= TCPOLEN_TSTAMP_ALIGNED;
+
+                if (req) {
+                        /* Re-arm the timer because data may have been sent out.
+                         * This is similar to the regular data transmission case
+                         * when new data has just been ack'ed.
+                         *
+                         * (TFO) - we could try to be more aggressive and
+                         * retransmitting any data sooner based on when they
+                         * are sent out.
                          */
-                        if (req != NULL) {
-                                /* Return RST if ack_seq is invalid.
-                                 * Note that RFC793 only says to generate a
-                                 * DUPACK for it but for TCP Fast Open it seems
-                                 * better to treat this case like TCP_SYN_RECV
-                                 * above.
-                                 */
-                                if (!acceptable)
-                                        return 1;
-                                /* We no longer need the request sock. */
-                                reqsk_fastopen_remove(sk, req, false);
-                                tcp_rearm_rto(sk);
-                        }
-                        if (tp->snd_una == tp->write_seq) {
-                                struct dst_entry *dst;
-
-                                tcp_set_state(sk, TCP_FIN_WAIT2);
-                                sk->sk_shutdown |= SEND_SHUTDOWN;
-
-                                dst = __sk_dst_get(sk);
-                                if (dst)
-                                        dst_confirm(dst);
-
-                                if (!sock_flag(sk, SOCK_DEAD))
-                                        /* Wake up lingering close() */
-                                        sk->sk_state_change(sk);
-                                else {
-                                        int tmo;
-
-                                        if (tp->linger2 < 0 ||
-                                            (TCP_SKB_CB(skb)->end_seq != TCP_SKB_CB(skb)->seq &&
-                                             after(TCP_SKB_CB(skb)->end_seq - th->fin, tp->rcv_nxt))) {
-                                                tcp_done(sk);
-                                                NET_INC_STATS_BH(sock_net(sk), LINUX_MIB_TCPABORTONDATA);
-                                                return 1;
-                                        }
+                        tcp_rearm_rto(sk);
+                } else
+                        tcp_init_metrics(sk);
 
-                                        tmo = tcp_fin_time(sk);
-                                        if (tmo > TCP_TIMEWAIT_LEN) {
-                                                inet_csk_reset_keepalive_timer(sk, tmo - TCP_TIMEWAIT_LEN);
-                                        } else if (th->fin || sock_owned_by_user(sk)) {
-                                                /* Bad case. We could lose such FIN otherwise.
-                                                 * It is not a big problem, but it looks confusing
-                                                 * and not so rare event. We still can lose it now,
-                                                 * if it spins in bh_lock_sock(), but it is really
-                                                 * marginal case.
-                                                 */
-                                                inet_csk_reset_keepalive_timer(sk, tmo);
-                                        } else {
-                                                tcp_time_wait(sk, TCP_FIN_WAIT2, tmo);
-                                                goto discard;
-                                        }
-                                }
-                        }
-                        break;
+                /* Prevent spurious tcp_cwnd_restart() on first data packet */
+                tp->lsndtime = tcp_time_stamp;
 
-                case TCP_CLOSING:
-                        if (tp->snd_una == tp->write_seq) {
-                                tcp_time_wait(sk, TCP_TIME_WAIT, 0);
-                                goto discard;
-                        }
+                tcp_initialize_rcv_mss(sk);
+                tcp_fast_path_on(tp);
+                break;
+
+        case TCP_FIN_WAIT1: {
+                struct dst_entry *dst;
+                int tmo;
+
+                /* If we enter the TCP_FIN_WAIT1 state and we are a
+                 * Fast Open socket and this is the first acceptable
+                 * ACK we have received, this would have acknowledged
+                 * our SYNACK so stop the SYNACK timer.
+                 */
+                if (req != NULL) {
+                        /* Return RST if ack_seq is invalid.
+                         * Note that RFC793 only says to generate a
+                         * DUPACK for it but for TCP Fast Open it seems
+                         * better to treat this case like TCP_SYN_RECV
+                         * above.
+                         */
+                        if (!acceptable)
+                                return 1;
+                        /* We no longer need the request sock. */
+                        reqsk_fastopen_remove(sk, req, false);
+                        tcp_rearm_rto(sk);
+                }
+                if (tp->snd_una != tp->write_seq)
                         break;
 
-                case TCP_LAST_ACK:
-                        if (tp->snd_una == tp->write_seq) {
-                                tcp_update_metrics(sk);
-                                tcp_done(sk);
-                                goto discard;
-                        }
+                tcp_set_state(sk, TCP_FIN_WAIT2);
+                sk->sk_shutdown |= SEND_SHUTDOWN;
+
+                dst = __sk_dst_get(sk);
+                if (dst)
+                        dst_confirm(dst);
+
+                if (!sock_flag(sk, SOCK_DEAD)) {
+                        /* Wake up lingering close() */
+                        sk->sk_state_change(sk);
                         break;
                 }
+
+                if (tp->linger2 < 0 ||
+                    (TCP_SKB_CB(skb)->end_seq != TCP_SKB_CB(skb)->seq &&
+                     after(TCP_SKB_CB(skb)->end_seq - th->fin, tp->rcv_nxt))) {
+                        tcp_done(sk);
+                        NET_INC_STATS_BH(sock_net(sk), LINUX_MIB_TCPABORTONDATA);
+                        return 1;
+                }
+
+                tmo = tcp_fin_time(sk);
+                if (tmo > TCP_TIMEWAIT_LEN) {
+                        inet_csk_reset_keepalive_timer(sk, tmo - TCP_TIMEWAIT_LEN);
+                } else if (th->fin || sock_owned_by_user(sk)) {
+                        /* Bad case. We could lose such FIN otherwise.
+                         * It is not a big problem, but it looks confusing
+                         * and not so rare event. We still can lose it now,
+                         * if it spins in bh_lock_sock(), but it is really
+                         * marginal case.
+                         */
+                        inet_csk_reset_keepalive_timer(sk, tmo);
+                } else {
+                        tcp_time_wait(sk, TCP_FIN_WAIT2, tmo);
+                        goto discard;
+                }
+                break;
+        }
+
+        case TCP_CLOSING:
+                if (tp->snd_una == tp->write_seq) {
+                        tcp_time_wait(sk, TCP_TIME_WAIT, 0);
+                        goto discard;
+                }
+                break;
+
+        case TCP_LAST_ACK:
+                if (tp->snd_una == tp->write_seq) {
+                        tcp_update_metrics(sk);
+                        tcp_done(sk);
+                        goto discard;
+                }
+                break;
         }
 
         /* step 6: check the URG bit */
diff --git a/net/ipv4/tcp_ipv4.c b/net/ipv4/tcp_ipv4.c
index 7999fc55c83b..35675e46aff8 100644
--- a/net/ipv4/tcp_ipv4.c
+++ b/net/ipv4/tcp_ipv4.c
@@ -75,6 +75,7 @@
 #include <net/netdma.h>
 #include <net/secure_seq.h>
 #include <net/tcp_memcontrol.h>
+#include <net/ll_poll.h>
 
 #include <linux/inet.h>
 #include <linux/ipv6.h>
@@ -545,8 +546,7 @@ out:
         sock_put(sk);
 }
 
-static void __tcp_v4_send_check(struct sk_buff *skb,
-                                __be32 saddr, __be32 daddr)
+void __tcp_v4_send_check(struct sk_buff *skb, __be32 saddr, __be32 daddr)
 {
         struct tcphdr *th = tcp_hdr(skb);
 
@@ -571,23 +571,6 @@ void tcp_v4_send_check(struct sock *sk, struct sk_buff *skb)
 }
 EXPORT_SYMBOL(tcp_v4_send_check);
 
-int tcp_v4_gso_send_check(struct sk_buff *skb)
-{
-        const struct iphdr *iph;
-        struct tcphdr *th;
-
-        if (!pskb_may_pull(skb, sizeof(*th)))
-                return -EINVAL;
-
-        iph = ip_hdr(skb);
-        th = tcp_hdr(skb);
-
-        th->check = 0;
-        skb->ip_summed = CHECKSUM_PARTIAL;
-        __tcp_v4_send_check(skb, iph->saddr, iph->daddr);
-        return 0;
-}
-
 /*
  *      This routine will send an RST to the other tcp.
  *
@@ -1026,7 +1009,7 @@ int tcp_md5_do_add(struct sock *sk, const union tcp_md5_addr *addr,
         key = sock_kmalloc(sk, sizeof(*key), gfp);
         if (!key)
                 return -ENOMEM;
-        if (hlist_empty(&md5sig->head) && !tcp_alloc_md5sig_pool(sk)) {
+        if (!tcp_alloc_md5sig_pool()) {
                 sock_kfree_s(sk, key, sizeof(*key));
                 return -ENOMEM;
         }
@@ -1044,9 +1027,7 @@ EXPORT_SYMBOL(tcp_md5_do_add);
 
 int tcp_md5_do_del(struct sock *sk, const union tcp_md5_addr *addr, int family)
 {
-        struct tcp_sock *tp = tcp_sk(sk);
         struct tcp_md5sig_key *key;
-        struct tcp_md5sig_info *md5sig;
 
         key = tcp_md5_do_lookup(sk, addr, family);
         if (!key)
@@ -1054,10 +1035,6 @@ int tcp_md5_do_del(struct sock *sk, const union tcp_md5_addr *addr, int family)
         hlist_del_rcu(&key->node);
         atomic_sub(sizeof(*key), &sk->sk_omem_alloc);
         kfree_rcu(key, rcu);
-        md5sig = rcu_dereference_protected(tp->md5sig_info,
-                                           sock_owned_by_user(sk));
-        if (hlist_empty(&md5sig->head))
-                tcp_free_md5sig_pool();
         return 0;
 }
 EXPORT_SYMBOL(tcp_md5_do_del);
@@ -1071,8 +1048,6 @@ static void tcp_clear_md5_list(struct sock *sk)
 
         md5sig = rcu_dereference_protected(tp->md5sig_info, 1);
 
-        if (!hlist_empty(&md5sig->head))
-                tcp_free_md5sig_pool();
         hlist_for_each_entry_safe(key, n, &md5sig->head, node) {
                 hlist_del_rcu(&key->node);
                 atomic_sub(sizeof(*key), &sk->sk_omem_alloc);
@@ -2019,6 +1994,7 @@ process:
         if (sk_filter(sk, skb))
                 goto discard_and_relse;
 
+        sk_mark_ll(sk, skb);
         skb->dev = NULL;
 
         bh_lock_sock_nested(sk);
@@ -2803,52 +2779,6 @@ void tcp4_proc_exit(void)
 }
 #endif /* CONFIG_PROC_FS */
 
-struct sk_buff **tcp4_gro_receive(struct sk_buff **head, struct sk_buff *skb)
-{
-        const struct iphdr *iph = skb_gro_network_header(skb);
-        __wsum wsum;
-        __sum16 sum;
-
-        switch (skb->ip_summed) {
-        case CHECKSUM_COMPLETE:
-                if (!tcp_v4_check(skb_gro_len(skb), iph->saddr, iph->daddr,
-                                  skb->csum)) {
-                        skb->ip_summed = CHECKSUM_UNNECESSARY;
-                        break;
-                }
-flush:
-                NAPI_GRO_CB(skb)->flush = 1;
-                return NULL;
-
-        case CHECKSUM_NONE:
-                wsum = csum_tcpudp_nofold(iph->saddr, iph->daddr,
-                                          skb_gro_len(skb), IPPROTO_TCP, 0);
-                sum = csum_fold(skb_checksum(skb,
-                                             skb_gro_offset(skb),
-                                             skb_gro_len(skb),
-                                             wsum));
-                if (sum)
-                        goto flush;
-
-                skb->ip_summed = CHECKSUM_UNNECESSARY;
-                break;
-        }
-
-        return tcp_gro_receive(head, skb);
-}
-
-int tcp4_gro_complete(struct sk_buff *skb)
-{
-        const struct iphdr *iph = ip_hdr(skb);
-        struct tcphdr *th = tcp_hdr(skb);
-
-        th->check = ~tcp_v4_check(skb->len - skb_transport_offset(skb),
-                                  iph->saddr, iph->daddr, 0);
-        skb_shinfo(skb)->gso_type = SKB_GSO_TCPV4;
-
-        return tcp_gro_complete(skb);
-}
-
 struct proto tcp_prot = {
         .name                   = "TCP",
         .owner                  = THIS_MODULE,
diff --git a/net/ipv4/tcp_minisocks.c b/net/ipv4/tcp_minisocks.c
index 0f0178827259..ab1c08658528 100644
--- a/net/ipv4/tcp_minisocks.c
+++ b/net/ipv4/tcp_minisocks.c
@@ -317,7 +317,7 @@ void tcp_time_wait(struct sock *sk, int state, int timeo)
                         key = tp->af_specific->md5_lookup(sk, sk);
                         if (key != NULL) {
                                 tcptw->tw_md5_key = kmemdup(key, sizeof(*key), GFP_ATOMIC);
-                                if (tcptw->tw_md5_key && tcp_alloc_md5sig_pool(sk) == NULL)
+                                if (tcptw->tw_md5_key && !tcp_alloc_md5sig_pool())
                                         BUG();
                         }
                 } while (0);
@@ -358,10 +358,8 @@ void tcp_twsk_destructor(struct sock *sk)
 #ifdef CONFIG_TCP_MD5SIG
         struct tcp_timewait_sock *twsk = tcp_twsk(sk);
 
-        if (twsk->tw_md5_key) {
-                tcp_free_md5sig_pool();
+        if (twsk->tw_md5_key)
                 kfree_rcu(twsk->tw_md5_key, rcu);
-        }
 #endif
 }
 EXPORT_SYMBOL_GPL(tcp_twsk_destructor);
diff --git a/net/ipv4/tcp_offload.c b/net/ipv4/tcp_offload.c
new file mode 100644
index 000000000000..3a7525e6c086
--- /dev/null
+++ b/net/ipv4/tcp_offload.c
@@ -0,0 +1,332 @@
+/*
+ *      IPV4 GSO/GRO offload support
+ *      Linux INET implementation
+ *
+ *      This program is free software; you can redistribute it and/or
+ *      modify it under the terms of the GNU General Public License
+ *      as published by the Free Software Foundation; either version
+ *      2 of the License, or (at your option) any later version.
+ *
+ *      TCPv4 GSO/GRO support
+ */
+
+#include <linux/skbuff.h>
+#include <net/tcp.h>
+#include <net/protocol.h>
+
+struct sk_buff *tcp_tso_segment(struct sk_buff *skb,
+                                netdev_features_t features)
+{
+        struct sk_buff *segs = ERR_PTR(-EINVAL);
+        struct tcphdr *th;
+        unsigned int thlen;
+        unsigned int seq;
+        __be32 delta;
+        unsigned int oldlen;
+        unsigned int mss;
+        struct sk_buff *gso_skb = skb;
+        __sum16 newcheck;
+        bool ooo_okay, copy_destructor;
+
+        if (!pskb_may_pull(skb, sizeof(*th)))
+                goto out;
+
+        th = tcp_hdr(skb);
+        thlen = th->doff * 4;
+        if (thlen < sizeof(*th))
+                goto out;
+
+        if (!pskb_may_pull(skb, thlen))
+                goto out;
+
+        oldlen = (u16)~skb->len;
+        __skb_pull(skb, thlen);
+
+        mss = tcp_skb_mss(skb);
+        if (unlikely(skb->len <= mss))
+                goto out;
+
+        if (skb_gso_ok(skb, features | NETIF_F_GSO_ROBUST)) {
+                /* Packet is from an untrusted source, reset gso_segs. */
+                int type = skb_shinfo(skb)->gso_type;
+
+                if (unlikely(type &
+                             ~(SKB_GSO_TCPV4 |
+                               SKB_GSO_DODGY |
+                               SKB_GSO_TCP_ECN |
+                               SKB_GSO_TCPV6 |
+                               SKB_GSO_GRE |
+                               SKB_GSO_MPLS |
+                               SKB_GSO_UDP_TUNNEL |
+                               0) ||
+                             !(type & (SKB_GSO_TCPV4 | SKB_GSO_TCPV6))))
+                        goto out;
+
+                skb_shinfo(skb)->gso_segs = DIV_ROUND_UP(skb->len, mss);
+
+                segs = NULL;
+                goto out;
+        }
+
+        copy_destructor = gso_skb->destructor == tcp_wfree;
+        ooo_okay = gso_skb->ooo_okay;
+        /* All segments but the first should have ooo_okay cleared */
+        skb->ooo_okay = 0;
+
+        segs = skb_segment(skb, features);
+        if (IS_ERR(segs))
+                goto out;
+
+        /* Only first segment might have ooo_okay set */
+        segs->ooo_okay = ooo_okay;
+
+        delta = htonl(oldlen + (thlen + mss));
+
+        skb = segs;
+        th = tcp_hdr(skb);
+        seq = ntohl(th->seq);
+
+        newcheck = ~csum_fold((__force __wsum)((__force u32)th->check +
+                                               (__force u32)delta));
+
+        do {
+                th->fin = th->psh = 0;
+                th->check = newcheck;
+
+                if (skb->ip_summed != CHECKSUM_PARTIAL)
+                        th->check =
+                             csum_fold(csum_partial(skb_transport_header(skb),
+                                                    thlen, skb->csum));
+
+                seq += mss;
+                if (copy_destructor) {
+                        skb->destructor = gso_skb->destructor;
+                        skb->sk = gso_skb->sk;
+                        /* {tcp|sock}_wfree() use exact truesize accounting :
+                         * sum(skb->truesize) MUST be exactly be gso_skb->truesize
+                         * So we account mss bytes of 'true size' for each segment.
+                         * The last segment will contain the remaining.
+                         */
+                        skb->truesize = mss;
+                        gso_skb->truesize -= mss;
+                }
+                skb = skb->next;
+                th = tcp_hdr(skb);
+
+                th->seq = htonl(seq);
+                th->cwr = 0;
+        } while (skb->next);
+
+        /* Following permits TCP Small Queues to work well with GSO :
+         * The callback to TCP stack will be called at the time last frag
+         * is freed at TX completion, and not right now when gso_skb
+         * is freed by GSO engine
+         */
+        if (copy_destructor) {
+                swap(gso_skb->sk, skb->sk);
+                swap(gso_skb->destructor, skb->destructor);
+                swap(gso_skb->truesize, skb->truesize);
+        }
+
+        delta = htonl(oldlen + (skb_tail_pointer(skb) -
+                                skb_transport_header(skb)) +
+                      skb->data_len);
+        th->check = ~csum_fold((__force __wsum)((__force u32)th->check +
+                                (__force u32)delta));
+        if (skb->ip_summed != CHECKSUM_PARTIAL)
+                th->check = csum_fold(csum_partial(skb_transport_header(skb),
+                                                   thlen, skb->csum));
+out:
+        return segs;
+}
+EXPORT_SYMBOL(tcp_tso_segment);
+
+struct sk_buff **tcp_gro_receive(struct sk_buff **head, struct sk_buff *skb)
+{
+        struct sk_buff **pp = NULL;
+        struct sk_buff *p;
+        struct tcphdr *th;
+        struct tcphdr *th2;
+        unsigned int len;
+        unsigned int thlen;
+        __be32 flags;
+        unsigned int mss = 1;
+        unsigned int hlen;
+        unsigned int off;
+        int flush = 1;
+        int i;
+
+        off = skb_gro_offset(skb);
+        hlen = off + sizeof(*th);
+        th = skb_gro_header_fast(skb, off);
+        if (skb_gro_header_hard(skb, hlen)) {
+                th = skb_gro_header_slow(skb, hlen, off);
+                if (unlikely(!th))
+                        goto out;
+        }
+
+        thlen = th->doff * 4;
+        if (thlen < sizeof(*th))
+                goto out;
+
+        hlen = off + thlen;
+        if (skb_gro_header_hard(skb, hlen)) {
+                th = skb_gro_header_slow(skb, hlen, off);
+                if (unlikely(!th))
+                        goto out;
+        }
+
+        skb_gro_pull(skb, thlen);
+
+        len = skb_gro_len(skb);
+        flags = tcp_flag_word(th);
+
+        for (; (p = *head); head = &p->next) {
+                if (!NAPI_GRO_CB(p)->same_flow)
+                        continue;
+
+                th2 = tcp_hdr(p);
+
+                if (*(u32 *)&th->source ^ *(u32 *)&th2->source) {
+                        NAPI_GRO_CB(p)->same_flow = 0;
+                        continue;
+                }
+
+                goto found;
+        }
+
+        goto out_check_final;
+
+found:
+        flush = NAPI_GRO_CB(p)->flush;
+        flush |= (__force int)(flags & TCP_FLAG_CWR);
+        flush |= (__force int)((flags ^ tcp_flag_word(th2)) &
+                  ~(TCP_FLAG_CWR | TCP_FLAG_FIN | TCP_FLAG_PSH));
+        flush |= (__force int)(th->ack_seq ^ th2->ack_seq);
+        for (i = sizeof(*th); i < thlen; i += 4)
+                flush |= *(u32 *)((u8 *)th + i) ^
+                         *(u32 *)((u8 *)th2 + i);
+
+        mss = tcp_skb_mss(p);
+
+        flush |= (len - 1) >= mss;
+        flush |= (ntohl(th2->seq) + skb_gro_len(p)) ^ ntohl(th->seq);
+
+        if (flush || skb_gro_receive(head, skb)) {
+                mss = 1;
+                goto out_check_final;
+        }
+
+        p = *head;
+        th2 = tcp_hdr(p);
+        tcp_flag_word(th2) |= flags & (TCP_FLAG_FIN | TCP_FLAG_PSH);
+
+out_check_final:
+        flush = len < mss;
+        flush |= (__force int)(flags & (TCP_FLAG_URG | TCP_FLAG_PSH |
+                                        TCP_FLAG_RST | TCP_FLAG_SYN |
+                                        TCP_FLAG_FIN));
+
+        if (p && (!NAPI_GRO_CB(skb)->same_flow || flush))
+                pp = head;
+
+out:
+        NAPI_GRO_CB(skb)->flush |= flush;
+
+        return pp;
+}
+EXPORT_SYMBOL(tcp_gro_receive);
+
+int tcp_gro_complete(struct sk_buff *skb)
+{
+        struct tcphdr *th = tcp_hdr(skb);
+
+        skb->csum_start = skb_transport_header(skb) - skb->head;
+        skb->csum_offset = offsetof(struct tcphdr, check);
+        skb->ip_summed = CHECKSUM_PARTIAL;
+
+        skb_shinfo(skb)->gso_segs = NAPI_GRO_CB(skb)->count;
+
+        if (th->cwr)
+                skb_shinfo(skb)->gso_type |= SKB_GSO_TCP_ECN;
+
+        return 0;
+}
+EXPORT_SYMBOL(tcp_gro_complete);
+
+static int tcp_v4_gso_send_check(struct sk_buff *skb)
+{
+        const struct iphdr *iph;
+        struct tcphdr *th;
+
+        if (!pskb_may_pull(skb, sizeof(*th)))
+                return -EINVAL;
+
+        iph = ip_hdr(skb);
+        th = tcp_hdr(skb);
+
+        th->check = 0;
+        skb->ip_summed = CHECKSUM_PARTIAL;
+        __tcp_v4_send_check(skb, iph->saddr, iph->daddr);
+        return 0;
+}
+
+static struct sk_buff **tcp4_gro_receive(struct sk_buff **head, struct sk_buff *skb)
+{
+        const struct iphdr *iph = skb_gro_network_header(skb);
+        __wsum wsum;
+        __sum16 sum;
+
+        switch (skb->ip_summed) {
+        case CHECKSUM_COMPLETE:
+                if (!tcp_v4_check(skb_gro_len(skb), iph->saddr, iph->daddr,
+                                  skb->csum)) {
+                        skb->ip_summed = CHECKSUM_UNNECESSARY;
+                        break;
+                }
+flush:
+                NAPI_GRO_CB(skb)->flush = 1;
+                return NULL;
+
+        case CHECKSUM_NONE:
+                wsum = csum_tcpudp_nofold(iph->saddr, iph->daddr,
+                                          skb_gro_len(skb), IPPROTO_TCP, 0);
+                sum = csum_fold(skb_checksum(skb,
+                                             skb_gro_offset(skb),
+                                             skb_gro_len(skb),
+                                             wsum));
+                if (sum)
+                        goto flush;
+
+                skb->ip_summed = CHECKSUM_UNNECESSARY;
+                break;
+        }
+
+        return tcp_gro_receive(head, skb);
+}
+
+static int tcp4_gro_complete(struct sk_buff *skb)
+{
+        const struct iphdr *iph = ip_hdr(skb);
+        struct tcphdr *th = tcp_hdr(skb);
+
+        th->check = ~tcp_v4_check(skb->len - skb_transport_offset(skb),
+                                  iph->saddr, iph->daddr, 0);
+        skb_shinfo(skb)->gso_type = SKB_GSO_TCPV4;
+
+        return tcp_gro_complete(skb);
+}
+
+static const struct net_offload tcpv4_offload = {
+        .callbacks = {
+                .gso_send_check =       tcp_v4_gso_send_check,
+                .gso_segment    =       tcp_tso_segment,
+                .gro_receive    =       tcp4_gro_receive,
+                .gro_complete   =       tcp4_gro_complete,
+        },
+};
+
+int __init tcpv4_offload_init(void)
+{
+        return inet_add_offload(&tcpv4_offload, IPPROTO_TCP);
+}
diff --git a/net/ipv4/tcp_output.c b/net/ipv4/tcp_output.c
index ec335fabd5cc..3d609490f118 100644
--- a/net/ipv4/tcp_output.c
+++ b/net/ipv4/tcp_output.c
@@ -160,6 +160,7 @@ static void tcp_event_data_sent(struct tcp_sock *tp,
 {
         struct inet_connection_sock *icsk = inet_csk(sk);
         const u32 now = tcp_time_stamp;
+        const struct dst_entry *dst = __sk_dst_get(sk);
 
         if (sysctl_tcp_slow_start_after_idle &&
             (!tp->packets_out && (s32)(now - tp->lsndtime) > icsk->icsk_rto))
@@ -170,8 +171,9 @@ static void tcp_event_data_sent(struct tcp_sock *tp,
         /* If it is a reply for ato after last received
          * packet, enter pingpong mode.
          */
-        if ((u32)(now - icsk->icsk_ack.lrcvtime) < icsk->icsk_ack.ato)
-                icsk->icsk_ack.pingpong = 1;
+        if ((u32)(now - icsk->icsk_ack.lrcvtime) < icsk->icsk_ack.ato &&
+            (!dst || !dst_metric(dst, RTAX_QUICKACK)))
+                        icsk->icsk_ack.pingpong = 1;
 }
 
 /* Account for an ACK we sent. */
@@ -181,6 +183,21 @@ static inline void tcp_event_ack_sent(struct sock *sk, unsigned int pkts)
         inet_csk_clear_xmit_timer(sk, ICSK_TIME_DACK);
 }
 
+
+u32 tcp_default_init_rwnd(u32 mss)
+{
+        /* Initial receive window should be twice of TCP_INIT_CWND to
+         * enable proper sending of new unsent data during fast recovery
+         * (RFC 3517, Section 4, NextSeg() rule (2)). Further place a
+         * limit when mss is larger than 1460.
+         */
+        u32 init_rwnd = TCP_INIT_CWND * 2;
+
+        if (mss > 1460)
+                init_rwnd = max((1460 * init_rwnd) / mss, 2U);
+        return init_rwnd;
+}
+
 /* Determine a window scaling and initial window to offer.
  * Based on the assumption that the given amount of space
  * will be offered. Store the results in the tp structure.
@@ -230,22 +247,10 @@ void tcp_select_initial_window(int __space, __u32 mss,
                 }
         }
 
-        /* Set initial window to a value enough for senders starting with
-         * initial congestion window of TCP_DEFAULT_INIT_RCVWND. Place
-         * a limit on the initial window when mss is larger than 1460.
-         */
         if (mss > (1 << *rcv_wscale)) {
-                int init_cwnd = TCP_DEFAULT_INIT_RCVWND;
-                if (mss > 1460)
-                        init_cwnd =
-                        max_t(u32, (1460 * TCP_DEFAULT_INIT_RCVWND) / mss, 2);
-                /* when initializing use the value from init_rcv_wnd
-                 * rather than the default from above
-                 */
-                if (init_rcv_wnd)
-                        *rcv_wnd = min(*rcv_wnd, init_rcv_wnd * mss);
-                else
-                        *rcv_wnd = min(*rcv_wnd, init_cwnd * mss);
+                if (!init_rcv_wnd) /* Use default unless specified otherwise */
+                        init_rcv_wnd = tcp_default_init_rwnd(mss);
+                *rcv_wnd = min(*rcv_wnd, init_rcv_wnd * mss);
         }
 
         /* Set the clamp no higher than max representable value */
diff --git a/net/ipv4/udp.c b/net/ipv4/udp.c
index 0bf5d399a03c..6b270e53c207 100644
--- a/net/ipv4/udp.c
+++ b/net/ipv4/udp.c
@@ -109,6 +109,7 @@
 #include <trace/events/udp.h>
 #include <linux/static_key.h>
 #include <trace/events/skb.h>
+#include <net/ll_poll.h>
 #include "udp_impl.h"
 
 struct udp_table udp_table __read_mostly;
@@ -429,7 +430,7 @@ begin:
                         reuseport = sk->sk_reuseport;
                         if (reuseport) {
                                 hash = inet_ehashfn(net, daddr, hnum,
-                                                    saddr, htons(sport));
+                                                    saddr, sport);
                                 matches = 1;
                         }
                 } else if (score == badness && reuseport) {
@@ -510,7 +511,7 @@ begin:
                         reuseport = sk->sk_reuseport;
                         if (reuseport) {
                                 hash = inet_ehashfn(net, daddr, hnum,
-                                                    saddr, htons(sport));
+                                                    saddr, sport);
                                 matches = 1;
                         }
                 } else if (score == badness && reuseport) {
@@ -799,7 +800,7 @@ send:
 /*
  * Push out all pending data as one UDP datagram. Socket is locked.
  */
-static int udp_push_pending_frames(struct sock *sk)
+int udp_push_pending_frames(struct sock *sk)
 {
         struct udp_sock  *up = udp_sk(sk);
         struct inet_sock *inet = inet_sk(sk);
@@ -818,6 +819,7 @@ out:
         up->pending = 0;
         return err;
 }
+EXPORT_SYMBOL(udp_push_pending_frames);
 
 int udp_sendmsg(struct kiocb *iocb, struct sock *sk, struct msghdr *msg,
                 size_t len)
@@ -1709,7 +1711,10 @@ int __udp4_lib_rcv(struct sk_buff *skb, struct udp_table *udptable,
         sk = __udp4_lib_lookup_skb(skb, uh->source, uh->dest, udptable);
 
         if (sk != NULL) {
-                int ret = udp_queue_rcv_skb(sk, skb);
+                int ret;
+
+                sk_mark_ll(sk, skb);
+                ret = udp_queue_rcv_skb(sk, skb);
                 sock_put(sk);
 
                 /* a return value > 0 means to resubmit the input, but
@@ -1967,6 +1972,8 @@ unsigned int udp_poll(struct file *file, struct socket *sock, poll_table *wait)
         unsigned int mask = datagram_poll(file, sock, wait);
         struct sock *sk = sock->sk;
 
+        sock_rps_record_flow(sk);
+
         /* Check for false positives due to checksum errors */
         if ((mask & POLLRDNORM) && !(file->f_flags & O_NONBLOCK) &&
             !(sk->sk_shutdown & RCV_SHUTDOWN) && !first_packet_length(sk))
@@ -2284,29 +2291,8 @@ void __init udp_init(void)
         sysctl_udp_wmem_min = SK_MEM_QUANTUM;
 }
 
-int udp4_ufo_send_check(struct sk_buff *skb)
-{
-        if (!pskb_may_pull(skb, sizeof(struct udphdr)))
-                return -EINVAL;
-
-        if (likely(!skb->encapsulation)) {
-                const struct iphdr *iph;
-                struct udphdr *uh;
-
-                iph = ip_hdr(skb);
-                uh = udp_hdr(skb);
-
-                uh->check = ~csum_tcpudp_magic(iph->saddr, iph->daddr, skb->len,
-                                IPPROTO_UDP, 0);
-                skb->csum_start = skb_transport_header(skb) - skb->head;
-                skb->csum_offset = offsetof(struct udphdr, check);
-                skb->ip_summed = CHECKSUM_PARTIAL;
-        }
-        return 0;
-}
-
-static struct sk_buff *skb_udp_tunnel_segment(struct sk_buff *skb,
-                netdev_features_t features)
+struct sk_buff *skb_udp_tunnel_segment(struct sk_buff *skb,
+                                       netdev_features_t features)
 {
         struct sk_buff *segs = ERR_PTR(-EINVAL);
         int mac_len = skb->mac_len;
@@ -2365,53 +2351,3 @@ static struct sk_buff *skb_udp_tunnel_segment(struct sk_buff *skb,
 out:
         return segs;
 }
-
-struct sk_buff *udp4_ufo_fragment(struct sk_buff *skb,
-        netdev_features_t features)
-{
-        struct sk_buff *segs = ERR_PTR(-EINVAL);
-        unsigned int mss;
-        mss = skb_shinfo(skb)->gso_size;
-        if (unlikely(skb->len <= mss))
-                goto out;
-
-        if (skb_gso_ok(skb, features | NETIF_F_GSO_ROBUST)) {
-                /* Packet is from an untrusted source, reset gso_segs. */
-                int type = skb_shinfo(skb)->gso_type;
-
-                if (unlikely(type & ~(SKB_GSO_UDP | SKB_GSO_DODGY |
-                                      SKB_GSO_UDP_TUNNEL |
-                                      SKB_GSO_GRE) ||
-                             !(type & (SKB_GSO_UDP))))
-                        goto out;
-
-                skb_shinfo(skb)->gso_segs = DIV_ROUND_UP(skb->len, mss);
-
-                segs = NULL;
-                goto out;
-        }
-
-        /* Fragment the skb. IP headers of the fragments are updated in
-         * inet_gso_segment()
-         */
-        if (skb->encapsulation && skb_shinfo(skb)->gso_type & SKB_GSO_UDP_TUNNEL)
-                segs = skb_udp_tunnel_segment(skb, features);
-        else {
-                int offset;
-                __wsum csum;
-
-                /* Do software UFO. Complete and fill in the UDP checksum as
-                 * HW cannot do checksum of UDP packets sent as multiple
-                 * IP fragments.
-                 */
-                offset = skb_checksum_start_offset(skb);
-                csum = skb_checksum(skb, offset, skb->len - offset, 0);
-                offset += skb->csum_offset;
-                *(__sum16 *)(skb->data + offset) = csum_fold(csum);
-                skb->ip_summed = CHECKSUM_NONE;
-
-                segs = skb_segment(skb, features);
-        }
-out:
-        return segs;
-}
diff --git a/net/ipv4/udp_offload.c b/net/ipv4/udp_offload.c
new file mode 100644
index 000000000000..f35eccaa855e
--- /dev/null
+++ b/net/ipv4/udp_offload.c
@@ -0,0 +1,100 @@
+/*
+ *      IPV4 GSO/GRO offload support
+ *      Linux INET implementation
+ *
+ *      This program is free software; you can redistribute it and/or
+ *      modify it under the terms of the GNU General Public License
+ *      as published by the Free Software Foundation; either version
+ *      2 of the License, or (at your option) any later version.
+ *
+ *      UDPv4 GSO support
+ */
+
+#include <linux/skbuff.h>
+#include <net/udp.h>
+#include <net/protocol.h>
+
+static int udp4_ufo_send_check(struct sk_buff *skb)
+{
+        if (!pskb_may_pull(skb, sizeof(struct udphdr)))
+                return -EINVAL;
+
+        if (likely(!skb->encapsulation)) {
+                const struct iphdr *iph;
+                struct udphdr *uh;
+
+                iph = ip_hdr(skb);
+                uh = udp_hdr(skb);
+
+                uh->check = ~csum_tcpudp_magic(iph->saddr, iph->daddr, skb->len,
+                                IPPROTO_UDP, 0);
+                skb->csum_start = skb_transport_header(skb) - skb->head;
+                skb->csum_offset = offsetof(struct udphdr, check);
+                skb->ip_summed = CHECKSUM_PARTIAL;
+        }
+
+        return 0;
+}
+
+static struct sk_buff *udp4_ufo_fragment(struct sk_buff *skb,
+                                         netdev_features_t features)
+{
+        struct sk_buff *segs = ERR_PTR(-EINVAL);
+        unsigned int mss;
+
+        mss = skb_shinfo(skb)->gso_size;
+        if (unlikely(skb->len <= mss))
+                goto out;
+
+        if (skb_gso_ok(skb, features | NETIF_F_GSO_ROBUST)) {
+                /* Packet is from an untrusted source, reset gso_segs. */
+                int type = skb_shinfo(skb)->gso_type;
+
+                if (unlikely(type & ~(SKB_GSO_UDP | SKB_GSO_DODGY |
+                                      SKB_GSO_UDP_TUNNEL |
+                                      SKB_GSO_GRE | SKB_GSO_MPLS) ||
+                             !(type & (SKB_GSO_UDP))))
+                        goto out;
+
+                skb_shinfo(skb)->gso_segs = DIV_ROUND_UP(skb->len, mss);
+
+                segs = NULL;
+                goto out;
+        }
+
+        /* Fragment the skb. IP headers of the fragments are updated in
+         * inet_gso_segment()
+         */
+        if (skb->encapsulation && skb_shinfo(skb)->gso_type & SKB_GSO_UDP_TUNNEL)
+                segs = skb_udp_tunnel_segment(skb, features);
+        else {
+                int offset;
+                __wsum csum;
+
+                /* Do software UFO. Complete and fill in the UDP checksum as
+                 * HW cannot do checksum of UDP packets sent as multiple
+                 * IP fragments.
+                 */
+                offset = skb_checksum_start_offset(skb);
+                csum = skb_checksum(skb, offset, skb->len - offset, 0);
+                offset += skb->csum_offset;
+                *(__sum16 *)(skb->data + offset) = csum_fold(csum);
+                skb->ip_summed = CHECKSUM_NONE;
+
+                segs = skb_segment(skb, features);
+        }
+out:
+        return segs;
+}
+
+static const struct net_offload udpv4_offload = {
+        .callbacks = {
+                .gso_send_check = udp4_ufo_send_check,
+                .gso_segment = udp4_ufo_fragment,
+        },
+};
+
+int __init udpv4_offload_init(void)
+{
+        return inet_add_offload(&udpv4_offload, IPPROTO_UDP);
+}
diff --git a/net/ipv4/xfrm4_tunnel.c b/net/ipv4/xfrm4_tunnel.c
index 05a5df2febc9..06347dbd32c1 100644
--- a/net/ipv4/xfrm4_tunnel.c
+++ b/net/ipv4/xfrm4_tunnel.c
@@ -63,7 +63,7 @@ static int xfrm_tunnel_err(struct sk_buff *skb, u32 info)
 static struct xfrm_tunnel xfrm_tunnel_handler __read_mostly = {
         .handler        =       xfrm_tunnel_rcv,
         .err_handler    =       xfrm_tunnel_err,
-        .priority       =       2,
+        .priority       =       3,
 };
 
 #if IS_ENABLED(CONFIG_IPV6)
diff --git a/net/ipv6/Makefile b/net/ipv6/Makefile
index 9af088d2cdaa..470a9c008e9b 100644
--- a/net/ipv6/Makefile
+++ b/net/ipv6/Makefile
@@ -7,7 +7,7 @@ obj-$(CONFIG_IPV6) += ipv6.o
 ipv6-objs :=    af_inet6.o anycast.o ip6_output.o ip6_input.o addrconf.o \
                 addrlabel.o \
                 route.o ip6_fib.o ipv6_sockglue.o ndisc.o udp.o udplite.o \
-                raw.o icmp.o mcast.o reassembly.o tcp_ipv6.o \
+                raw.o icmp.o mcast.o reassembly.o tcp_ipv6.o ping.o \
                 exthdrs.o datagram.o ip6_flowlabel.o inet6_connection_sock.o
 
 ipv6-offload := ip6_offload.o tcpv6_offload.o udp_offload.o exthdrs_offload.o
diff --git a/net/ipv6/addrconf.c b/net/ipv6/addrconf.c
index 4ab4c38958c6..cfdcf7b2daf6 100644
--- a/net/ipv6/addrconf.c
+++ b/net/ipv6/addrconf.c
@@ -253,37 +253,32 @@ static inline bool addrconf_qdisc_ok(const struct net_device *dev)
         return !qdisc_tx_is_noop(dev);
 }
 
-static void addrconf_del_timer(struct inet6_ifaddr *ifp)
+static void addrconf_del_rs_timer(struct inet6_dev *idev)
 {
-        if (del_timer(&ifp->timer))
+        if (del_timer(&idev->rs_timer))
+                __in6_dev_put(idev);
+}
+
+static void addrconf_del_dad_timer(struct inet6_ifaddr *ifp)
+{
+        if (del_timer(&ifp->dad_timer))
                 __in6_ifa_put(ifp);
 }
 
-enum addrconf_timer_t {
-        AC_NONE,
-        AC_DAD,
-        AC_RS,
-};
+static void addrconf_mod_rs_timer(struct inet6_dev *idev,
+                                  unsigned long when)
+{
+        if (!timer_pending(&idev->rs_timer))
+                in6_dev_hold(idev);
+        mod_timer(&idev->rs_timer, jiffies + when);
+}
 
-static void addrconf_mod_timer(struct inet6_ifaddr *ifp,
-                               enum addrconf_timer_t what,
-                               unsigned long when)
+static void addrconf_mod_dad_timer(struct inet6_ifaddr *ifp,
+                                   unsigned long when)
 {
-        if (!del_timer(&ifp->timer))
+        if (!timer_pending(&ifp->dad_timer))
                 in6_ifa_hold(ifp);
-
-        switch (what) {
-        case AC_DAD:
-                ifp->timer.function = addrconf_dad_timer;
-                break;
-        case AC_RS:
-                ifp->timer.function = addrconf_rs_timer;
-                break;
-        default:
-                break;
-        }
-        ifp->timer.expires = jiffies + when;
-        add_timer(&ifp->timer);
+        mod_timer(&ifp->dad_timer, jiffies + when);
 }
 
 static int snmp6_alloc_dev(struct inet6_dev *idev)
@@ -326,6 +321,7 @@ void in6_dev_finish_destroy(struct inet6_dev *idev)
 
         WARN_ON(!list_empty(&idev->addr_list));
         WARN_ON(idev->mc_list != NULL);
+        WARN_ON(timer_pending(&idev->rs_timer));
 
 #ifdef NET_REFCNT_DEBUG
         pr_debug("%s: %s\n", __func__, dev ? dev->name : "NIL");
@@ -357,7 +353,8 @@ static struct inet6_dev *ipv6_add_dev(struct net_device *dev)
         rwlock_init(&ndev->lock);
         ndev->dev = dev;
         INIT_LIST_HEAD(&ndev->addr_list);
-
+        setup_timer(&ndev->rs_timer, addrconf_rs_timer,
+                    (unsigned long)ndev);
         memcpy(&ndev->cnf, dev_net(dev)->ipv6.devconf_dflt, sizeof(ndev->cnf));
         ndev->cnf.mtu6 = dev->mtu;
         ndev->cnf.sysctl = NULL;
@@ -776,7 +773,7 @@ void inet6_ifa_finish_destroy(struct inet6_ifaddr *ifp)
 
         in6_dev_put(ifp->idev);
 
-        if (del_timer(&ifp->timer))
+        if (del_timer(&ifp->dad_timer))
                 pr_notice("Timer is still running, when freeing ifa=%p\n", ifp);
 
         if (ifp->state != INET6_IFADDR_STATE_DEAD) {
@@ -869,9 +866,9 @@ ipv6_add_addr(struct inet6_dev *idev, const struct in6_addr *addr, int pfxlen,
 
         spin_lock_init(&ifa->lock);
         spin_lock_init(&ifa->state_lock);
-        init_timer(&ifa->timer);
+        setup_timer(&ifa->dad_timer, addrconf_dad_timer,
+                    (unsigned long)ifa);
         INIT_HLIST_NODE(&ifa->addr_lst);
-        ifa->timer.data = (unsigned long) ifa;
         ifa->scope = scope;
         ifa->prefix_len = pfxlen;
         ifa->flags = flags | IFA_F_TENTATIVE;
@@ -994,7 +991,7 @@ static void ipv6_del_addr(struct inet6_ifaddr *ifp)
         }
         write_unlock_bh(&idev->lock);
 
-        addrconf_del_timer(ifp);
+        addrconf_del_dad_timer(ifp);
 
         ipv6_ifa_notify(RTM_DELADDR, ifp);
 
@@ -1126,8 +1123,7 @@ retry:
 
         ift = !max_addresses ||
               ipv6_count_addresses(idev) < max_addresses ?
-                ipv6_add_addr(idev, &addr, tmp_plen,
-                              ipv6_addr_type(&addr)&IPV6_ADDR_SCOPE_MASK,
+                ipv6_add_addr(idev, &addr, tmp_plen, ipv6_addr_scope(&addr),
                               addr_flags) : NULL;
         if (IS_ERR_OR_NULL(ift)) {
                 in6_ifa_put(ifp);
@@ -1448,6 +1444,23 @@ try_nextdev:
 }
 EXPORT_SYMBOL(ipv6_dev_get_saddr);
 
+int __ipv6_get_lladdr(struct inet6_dev *idev, struct in6_addr *addr,
+                      unsigned char banned_flags)
+{
+        struct inet6_ifaddr *ifp;
+        int err = -EADDRNOTAVAIL;
+
+        list_for_each_entry(ifp, &idev->addr_list, if_list) {
+                if (ifp->scope == IFA_LINK &&
+                    !(ifp->flags & banned_flags)) {
+                        *addr = ifp->addr;
+                        err = 0;
+                        break;
+                }
+        }
+        return err;
+}
+
 int ipv6_get_lladdr(struct net_device *dev, struct in6_addr *addr,
                     unsigned char banned_flags)
 {
@@ -1457,17 +1470,8 @@ int ipv6_get_lladdr(struct net_device *dev, struct in6_addr *addr,
         rcu_read_lock();
         idev = __in6_dev_get(dev);
         if (idev) {
-                struct inet6_ifaddr *ifp;
-
                 read_lock_bh(&idev->lock);
-                list_for_each_entry(ifp, &idev->addr_list, if_list) {
-                        if (ifp->scope == IFA_LINK &&
-                            !(ifp->flags & banned_flags)) {
-                                *addr = ifp->addr;
-                                err = 0;
-                                break;
-                        }
-                }
+                err = __ipv6_get_lladdr(idev, addr, banned_flags);
                 read_unlock_bh(&idev->lock);
         }
         rcu_read_unlock();
@@ -1581,7 +1585,7 @@ static void addrconf_dad_stop(struct inet6_ifaddr *ifp, int dad_failed)
 {
         if (ifp->flags&IFA_F_PERMANENT) {
                 spin_lock_bh(&ifp->lock);
-                addrconf_del_timer(ifp);
+                addrconf_del_dad_timer(ifp);
                 ifp->flags |= IFA_F_TENTATIVE;
                 if (dad_failed)
                         ifp->flags |= IFA_F_DADFAILED;
@@ -2402,6 +2406,7 @@ err_exit:
  *      Manual configuration of address on an interface
  */
 static int inet6_addr_add(struct net *net, int ifindex, const struct in6_addr *pfx,
+                          const struct in6_addr *peer_pfx,
                           unsigned int plen, __u8 ifa_flags, __u32 prefered_lft,
                           __u32 valid_lft)
 {
@@ -2457,6 +2462,8 @@ static int inet6_addr_add(struct net *net, int ifindex, const struct in6_addr *p
                 ifp->valid_lft = valid_lft;
                 ifp->prefered_lft = prefered_lft;
                 ifp->tstamp = jiffies;
+                if (peer_pfx)
+                        ifp->peer_addr = *peer_pfx;
                 spin_unlock_bh(&ifp->lock);
 
                 addrconf_prefix_route(&ifp->addr, ifp->prefix_len, dev,
@@ -2500,12 +2507,6 @@ static int inet6_addr_del(struct net *net, int ifindex, const struct in6_addr *p
                         read_unlock_bh(&idev->lock);
 
                         ipv6_del_addr(ifp);
-
-                        /* If the last address is deleted administratively,
-                           disable IPv6 on this interface.
-                         */
-                        if (list_empty(&idev->addr_list))
-                                addrconf_ifdown(idev->dev, 1);
                         return 0;
                 }
         }
@@ -2526,7 +2527,7 @@ int addrconf_add_ifaddr(struct net *net, void __user *arg)
                 return -EFAULT;
 
         rtnl_lock();
-        err = inet6_addr_add(net, ireq.ifr6_ifindex, &ireq.ifr6_addr,
+        err = inet6_addr_add(net, ireq.ifr6_ifindex, &ireq.ifr6_addr, NULL,
                              ireq.ifr6_prefixlen, IFA_F_PERMANENT,
                              INFINITY_LIFE_TIME, INFINITY_LIFE_TIME);
         rtnl_unlock();
@@ -2761,8 +2762,6 @@ static void addrconf_gre_config(struct net_device *dev)
         struct inet6_dev *idev;
         struct in6_addr addr;
 
-        pr_info("%s(%s)\n", __func__, dev->name);
-
         ASSERT_RTNL();
 
         if ((idev = ipv6_find_idev(dev)) == NULL) {
@@ -2829,9 +2828,9 @@ static void addrconf_ip6_tnl_config(struct net_device *dev)
 }
 
 static int addrconf_notify(struct notifier_block *this, unsigned long event,
-                           void *data)
+                           void *ptr)
 {
-        struct net_device *dev = (struct net_device *) data;
+        struct net_device *dev = netdev_notifier_info_to_dev(ptr);
         struct inet6_dev *idev = __in6_dev_get(dev);
         int run_pending = 0;
         int err;
@@ -3039,7 +3038,7 @@ static int addrconf_ifdown(struct net_device *dev, int how)
                 hlist_for_each_entry_rcu(ifa, h, addr_lst) {
                         if (ifa->idev == idev) {
                                 hlist_del_init_rcu(&ifa->addr_lst);
-                                addrconf_del_timer(ifa);
+                                addrconf_del_dad_timer(ifa);
                                 goto restart;
                         }
                 }
@@ -3048,6 +3047,8 @@ static int addrconf_ifdown(struct net_device *dev, int how)
 
         write_lock_bh(&idev->lock);
 
+        addrconf_del_rs_timer(idev);
+
         /* Step 2: clear flags for stateless addrconf */
         if (!how)
                 idev->if_flags &= ~(IF_RS_SENT|IF_RA_RCVD|IF_READY);
@@ -3077,7 +3078,7 @@ static int addrconf_ifdown(struct net_device *dev, int how)
         while (!list_empty(&idev->addr_list)) {
                 ifa = list_first_entry(&idev->addr_list,
                                        struct inet6_ifaddr, if_list);
-                addrconf_del_timer(ifa);
+                addrconf_del_dad_timer(ifa);
 
                 list_del(&ifa->if_list);
 
@@ -3119,10 +3120,10 @@ static int addrconf_ifdown(struct net_device *dev, int how)
 
 static void addrconf_rs_timer(unsigned long data)
 {
-        struct inet6_ifaddr *ifp = (struct inet6_ifaddr *) data;
-        struct inet6_dev *idev = ifp->idev;
+        struct inet6_dev *idev = (struct inet6_dev *)data;
+        struct in6_addr lladdr;
 
-        read_lock(&idev->lock);
+        write_lock(&idev->lock);
         if (idev->dead || !(idev->if_flags & IF_READY))
                 goto out;
 
@@ -3133,18 +3134,19 @@ static void addrconf_rs_timer(unsigned long data)
         if (idev->if_flags & IF_RA_RCVD)
                 goto out;
 
-        spin_lock(&ifp->lock);
-        if (ifp->probes++ < idev->cnf.rtr_solicits) {
-                /* The wait after the last probe can be shorter */
-                addrconf_mod_timer(ifp, AC_RS,
-                                   (ifp->probes == idev->cnf.rtr_solicits) ?
-                                   idev->cnf.rtr_solicit_delay :
-                                   idev->cnf.rtr_solicit_interval);
-                spin_unlock(&ifp->lock);
+        if (idev->rs_probes++ < idev->cnf.rtr_solicits) {
+                if (!__ipv6_get_lladdr(idev, &lladdr, IFA_F_TENTATIVE))
+                        ndisc_send_rs(idev->dev, &lladdr,
+                                      &in6addr_linklocal_allrouters);
+                else
+                        goto out;
 
-                ndisc_send_rs(idev->dev, &ifp->addr, &in6addr_linklocal_allrouters);
+                /* The wait after the last probe can be shorter */
+                addrconf_mod_rs_timer(idev, (idev->rs_probes ==
+                                             idev->cnf.rtr_solicits) ?
+                                      idev->cnf.rtr_solicit_delay :
+                                      idev->cnf.rtr_solicit_interval);
         } else {
-                spin_unlock(&ifp->lock);
                 /*
                  * Note: we do not support deprecated "all on-link"
                  * assumption any longer.
@@ -3153,8 +3155,8 @@ static void addrconf_rs_timer(unsigned long data)
         }
 
 out:
-        read_unlock(&idev->lock);
-        in6_ifa_put(ifp);
+        write_unlock(&idev->lock);
+        in6_dev_put(idev);
 }
 
 /*
@@ -3170,8 +3172,8 @@ static void addrconf_dad_kick(struct inet6_ifaddr *ifp)
         else
                 rand_num = net_random() % (idev->cnf.rtr_solicit_delay ? : 1);
 
-        ifp->probes = idev->cnf.dad_transmits;
-        addrconf_mod_timer(ifp, AC_DAD, rand_num);
+        ifp->dad_probes = idev->cnf.dad_transmits;
+        addrconf_mod_dad_timer(ifp, rand_num);
 }
 
 static void addrconf_dad_start(struct inet6_ifaddr *ifp)
@@ -3232,40 +3234,40 @@ static void addrconf_dad_timer(unsigned long data)
         struct inet6_dev *idev = ifp->idev;
         struct in6_addr mcaddr;
 
-        if (!ifp->probes && addrconf_dad_end(ifp))
+        if (!ifp->dad_probes && addrconf_dad_end(ifp))
                 goto out;
 
-        read_lock(&idev->lock);
+        write_lock(&idev->lock);
         if (idev->dead || !(idev->if_flags & IF_READY)) {
-                read_unlock(&idev->lock);
+                write_unlock(&idev->lock);
                 goto out;
         }
 
         spin_lock(&ifp->lock);
         if (ifp->state == INET6_IFADDR_STATE_DEAD) {
                 spin_unlock(&ifp->lock);
-                read_unlock(&idev->lock);
+                write_unlock(&idev->lock);
                 goto out;
         }
 
-        if (ifp->probes == 0) {
+        if (ifp->dad_probes == 0) {
                 /*
                  * DAD was successful
                  */
 
                 ifp->flags &= ~(IFA_F_TENTATIVE|IFA_F_OPTIMISTIC|IFA_F_DADFAILED);
                 spin_unlock(&ifp->lock);
-                read_unlock(&idev->lock);
+                write_unlock(&idev->lock);
 
                 addrconf_dad_completed(ifp);
 
                 goto out;
         }
 
-        ifp->probes--;
-        addrconf_mod_timer(ifp, AC_DAD, ifp->idev->nd_parms->retrans_time);
+        ifp->dad_probes--;
+        addrconf_mod_dad_timer(ifp, ifp->idev->nd_parms->retrans_time);
         spin_unlock(&ifp->lock);
-        read_unlock(&idev->lock);
+        write_unlock(&idev->lock);
 
         /* send a neighbour solicitation for our addr */
         addrconf_addr_solict_mult(&ifp->addr, &mcaddr);
@@ -3277,6 +3279,10 @@ out:
 static void addrconf_dad_completed(struct inet6_ifaddr *ifp)
 {
         struct net_device *dev = ifp->idev->dev;
+        struct in6_addr lladdr;
+        bool send_rs, send_mld;
+
+        addrconf_del_dad_timer(ifp);
 
         /*
          *      Configure the address for reception. Now it is valid.
@@ -3288,22 +3294,41 @@ static void addrconf_dad_completed(struct inet6_ifaddr *ifp)
            router advertisements, start sending router solicitations.
          */
 
-        if (ipv6_accept_ra(ifp->idev) &&
-            ifp->idev->cnf.rtr_solicits > 0 &&
-            (dev->flags&IFF_LOOPBACK) == 0 &&
-            (ipv6_addr_type(&ifp->addr) & IPV6_ADDR_LINKLOCAL)) {
+        read_lock_bh(&ifp->idev->lock);
+        spin_lock(&ifp->lock);
+        send_mld = ipv6_addr_type(&ifp->addr) & IPV6_ADDR_LINKLOCAL &&
+                   ifp->idev->valid_ll_addr_cnt == 1;
+        send_rs = send_mld &&
+                  ipv6_accept_ra(ifp->idev) &&
+                  ifp->idev->cnf.rtr_solicits > 0 &&
+                  (dev->flags&IFF_LOOPBACK) == 0;
+        spin_unlock(&ifp->lock);
+        read_unlock_bh(&ifp->idev->lock);
+
+        /* While dad is in progress mld report's source address is in6_addrany.
+         * Resend with proper ll now.
+         */
+        if (send_mld)
+                ipv6_mc_dad_complete(ifp->idev);
+
+        if (send_rs) {
                 /*
                  *      If a host as already performed a random delay
                  *      [...] as part of DAD [...] there is no need
                  *      to delay again before sending the first RS
                  */
-                ndisc_send_rs(ifp->idev->dev, &ifp->addr, &in6addr_linklocal_allrouters);
+                if (ipv6_get_lladdr(dev, &lladdr, IFA_F_TENTATIVE))
+                        return;
+                ndisc_send_rs(dev, &lladdr, &in6addr_linklocal_allrouters);
 
-                spin_lock_bh(&ifp->lock);
-                ifp->probes = 1;
+                write_lock_bh(&ifp->idev->lock);
+                spin_lock(&ifp->lock);
+                ifp->idev->rs_probes = 1;
                 ifp->idev->if_flags |= IF_RS_SENT;
-                addrconf_mod_timer(ifp, AC_RS, ifp->idev->cnf.rtr_solicit_interval);
-                spin_unlock_bh(&ifp->lock);
+                addrconf_mod_rs_timer(ifp->idev,
+                                      ifp->idev->cnf.rtr_solicit_interval);
+                spin_unlock(&ifp->lock);
+                write_unlock_bh(&ifp->idev->lock);
         }
 }
 
@@ -3615,18 +3640,20 @@ restart:
         rcu_read_unlock_bh();
 }
 
-static struct in6_addr *extract_addr(struct nlattr *addr, struct nlattr *local)
+static struct in6_addr *extract_addr(struct nlattr *addr, struct nlattr *local,
+                                     struct in6_addr **peer_pfx)
 {
         struct in6_addr *pfx = NULL;
 
+        *peer_pfx = NULL;
+
         if (addr)
                 pfx = nla_data(addr);
 
         if (local) {
                 if (pfx && nla_memcmp(local, pfx, sizeof(*pfx)))
-                        pfx = NULL;
-                else
-                        pfx = nla_data(local);
+                        *peer_pfx = pfx;
+                pfx = nla_data(local);
         }
 
         return pfx;
@@ -3644,7 +3671,7 @@ inet6_rtm_deladdr(struct sk_buff *skb, struct nlmsghdr *nlh)
         struct net *net = sock_net(skb->sk);
         struct ifaddrmsg *ifm;
         struct nlattr *tb[IFA_MAX+1];
-        struct in6_addr *pfx;
+        struct in6_addr *pfx, *peer_pfx;
         int err;
 
         err = nlmsg_parse(nlh, sizeof(*ifm), tb, IFA_MAX, ifa_ipv6_policy);
@@ -3652,7 +3679,7 @@ inet6_rtm_deladdr(struct sk_buff *skb, struct nlmsghdr *nlh)
                 return err;
 
         ifm = nlmsg_data(nlh);
-        pfx = extract_addr(tb[IFA_ADDRESS], tb[IFA_LOCAL]);
+        pfx = extract_addr(tb[IFA_ADDRESS], tb[IFA_LOCAL], &peer_pfx);
         if (pfx == NULL)
                 return -EINVAL;
 
@@ -3710,7 +3737,7 @@ inet6_rtm_newaddr(struct sk_buff *skb, struct nlmsghdr *nlh)
         struct net *net = sock_net(skb->sk);
         struct ifaddrmsg *ifm;
         struct nlattr *tb[IFA_MAX+1];
-        struct in6_addr *pfx;
+        struct in6_addr *pfx, *peer_pfx;
         struct inet6_ifaddr *ifa;
         struct net_device *dev;
         u32 valid_lft = INFINITY_LIFE_TIME, preferred_lft = INFINITY_LIFE_TIME;
@@ -3722,7 +3749,7 @@ inet6_rtm_newaddr(struct sk_buff *skb, struct nlmsghdr *nlh)
                 return err;
 
         ifm = nlmsg_data(nlh);
-        pfx = extract_addr(tb[IFA_ADDRESS], tb[IFA_LOCAL]);
+        pfx = extract_addr(tb[IFA_ADDRESS], tb[IFA_LOCAL], &peer_pfx);
         if (pfx == NULL)
                 return -EINVAL;
 
@@ -3750,7 +3777,7 @@ inet6_rtm_newaddr(struct sk_buff *skb, struct nlmsghdr *nlh)
                  * It would be best to check for !NLM_F_CREATE here but
                  * userspace alreay relies on not having to provide this.
                  */
-                return inet6_addr_add(net, ifm->ifa_index, pfx,
+                return inet6_addr_add(net, ifm->ifa_index, pfx, peer_pfx,
                                       ifm->ifa_prefixlen, ifa_flags,
                                       preferred_lft, valid_lft);
         }
@@ -3807,6 +3834,7 @@ static inline int rt_scope(int ifa_scope)
 static inline int inet6_ifaddr_msgsize(void)
 {
         return NLMSG_ALIGN(sizeof(struct ifaddrmsg))
+               + nla_total_size(16) /* IFA_LOCAL */
                + nla_total_size(16) /* IFA_ADDRESS */
                + nla_total_size(sizeof(struct ifa_cacheinfo));
 }
@@ -3845,13 +3873,22 @@ static int inet6_fill_ifaddr(struct sk_buff *skb, struct inet6_ifaddr *ifa,
                 valid = INFINITY_LIFE_TIME;
         }
 
-        if (nla_put(skb, IFA_ADDRESS, 16, &ifa->addr) < 0 ||
-            put_cacheinfo(skb, ifa->cstamp, ifa->tstamp, preferred, valid) < 0) {
-                nlmsg_cancel(skb, nlh);
-                return -EMSGSIZE;
-        }
+        if (!ipv6_addr_any(&ifa->peer_addr)) {
+                if (nla_put(skb, IFA_LOCAL, 16, &ifa->addr) < 0 ||
+                    nla_put(skb, IFA_ADDRESS, 16, &ifa->peer_addr) < 0)
+                        goto error;
+        } else
+                if (nla_put(skb, IFA_ADDRESS, 16, &ifa->addr) < 0)
+                        goto error;
+
+        if (put_cacheinfo(skb, ifa->cstamp, ifa->tstamp, preferred, valid) < 0)
+                goto error;
 
         return nlmsg_end(skb, nlh);
+
+error:
+        nlmsg_cancel(skb, nlh);
+        return -EMSGSIZE;
 }
 
 static int inet6_fill_ifmcaddr(struct sk_buff *skb, struct ifmcaddr6 *ifmca,
@@ -4051,7 +4088,7 @@ static int inet6_rtm_getaddr(struct sk_buff *in_skb, struct nlmsghdr *nlh)
         struct net *net = sock_net(in_skb->sk);
         struct ifaddrmsg *ifm;
         struct nlattr *tb[IFA_MAX+1];
-        struct in6_addr *addr = NULL;
+        struct in6_addr *addr = NULL, *peer;
         struct net_device *dev = NULL;
         struct inet6_ifaddr *ifa;
         struct sk_buff *skb;
@@ -4061,7 +4098,7 @@ static int inet6_rtm_getaddr(struct sk_buff *in_skb, struct nlmsghdr *nlh)
         if (err < 0)
                 goto errout;
 
-        addr = extract_addr(tb[IFA_ADDRESS], tb[IFA_LOCAL]);
+        addr = extract_addr(tb[IFA_ADDRESS], tb[IFA_LOCAL], &peer);
         if (addr == NULL) {
                 err = -EINVAL;
                 goto errout;
@@ -4339,8 +4376,11 @@ static int inet6_set_iftoken(struct inet6_dev *idev, struct in6_addr *token)
 
         write_lock_bh(&idev->lock);
 
-        if (update_rs)
+        if (update_rs) {
                 idev->if_flags |= IF_RS_SENT;
+                idev->rs_probes = 1;
+                addrconf_mod_rs_timer(idev, idev->cnf.rtr_solicit_interval);
+        }
 
         /* Well, that's kinda nasty ... */
         list_for_each_entry(ifp, &idev->addr_list, if_list) {
@@ -4353,6 +4393,7 @@ static int inet6_set_iftoken(struct inet6_dev *idev, struct in6_addr *token)
         }
 
         write_unlock_bh(&idev->lock);
+        addrconf_verify(0);
         return 0;
 }
 
@@ -4550,6 +4591,19 @@ errout:
                 rtnl_set_sk_err(net, RTNLGRP_IPV6_PREFIX, err);
 }
 
+static void update_valid_ll_addr_cnt(struct inet6_ifaddr *ifp, int count)
+{
+        write_lock_bh(&ifp->idev->lock);
+        spin_lock(&ifp->lock);
+        if (((ifp->flags & (IFA_F_PERMANENT|IFA_F_TENTATIVE|IFA_F_OPTIMISTIC|
+                            IFA_F_DADFAILED)) == IFA_F_PERMANENT) &&
+            (ipv6_addr_type(&ifp->addr) & IPV6_ADDR_LINKLOCAL))
+                ifp->idev->valid_ll_addr_cnt += count;
+        WARN_ON(ifp->idev->valid_ll_addr_cnt < 0);
+        spin_unlock(&ifp->lock);
+        write_unlock_bh(&ifp->idev->lock);
+}
+
 static void __ipv6_ifa_notify(int event, struct inet6_ifaddr *ifp)
 {
         struct net *net = dev_net(ifp->idev->dev);
@@ -4558,6 +4612,8 @@ static void __ipv6_ifa_notify(int event, struct inet6_ifaddr *ifp)
 
         switch (event) {
         case RTM_NEWADDR:
+                update_valid_ll_addr_cnt(ifp, 1);
+
                 /*
                  * If the address was optimistic
                  * we inserted the route at the start of
@@ -4568,11 +4624,28 @@ static void __ipv6_ifa_notify(int event, struct inet6_ifaddr *ifp)
                         ip6_ins_rt(ifp->rt);
                 if (ifp->idev->cnf.forwarding)
                         addrconf_join_anycast(ifp);
+                if (!ipv6_addr_any(&ifp->peer_addr))
+                        addrconf_prefix_route(&ifp->peer_addr, 128,
+                                              ifp->idev->dev, 0, 0);
                 break;
         case RTM_DELADDR:
+                update_valid_ll_addr_cnt(ifp, -1);
+
                 if (ifp->idev->cnf.forwarding)
                         addrconf_leave_anycast(ifp);
                 addrconf_leave_solict(ifp->idev, &ifp->addr);
+                if (!ipv6_addr_any(&ifp->peer_addr)) {
+                        struct rt6_info *rt;
+                        struct net_device *dev = ifp->idev->dev;
+
+                        rt = rt6_lookup(dev_net(dev), &ifp->peer_addr, NULL,
+                                        dev->ifindex, 1);
+                        if (rt) {
+                                dst_hold(&rt->dst);
+                                if (ip6_del_rt(rt))
+                                        dst_free(&rt->dst);
+                        }
+                }
                 dst_hold(&ifp->rt->dst);
 
                 if (ip6_del_rt(ifp->rt))
@@ -4593,13 +4666,13 @@ static void ipv6_ifa_notify(int event, struct inet6_ifaddr *ifp)
 #ifdef CONFIG_SYSCTL
 
 static
-int addrconf_sysctl_forward(ctl_table *ctl, int write,
+int addrconf_sysctl_forward(struct ctl_table *ctl, int write,
                            void __user *buffer, size_t *lenp, loff_t *ppos)
 {
         int *valp = ctl->data;
         int val = *valp;
         loff_t pos = *ppos;
-        ctl_table lctl;
+        struct ctl_table lctl;
         int ret;
 
         /*
@@ -4620,13 +4693,16 @@ int addrconf_sysctl_forward(ctl_table *ctl, int write,
 
 static void dev_disable_change(struct inet6_dev *idev)
 {
+        struct netdev_notifier_info info;
+
         if (!idev || !idev->dev)
                 return;
 
+        netdev_notifier_info_init(&info, idev->dev);
         if (idev->cnf.disable_ipv6)
-                addrconf_notify(NULL, NETDEV_DOWN, idev->dev);
+                addrconf_notify(NULL, NETDEV_DOWN, &info);
         else
-                addrconf_notify(NULL, NETDEV_UP, idev->dev);
+                addrconf_notify(NULL, NETDEV_UP, &info);
 }
 
 static void addrconf_disable_change(struct net *net, __s32 newf)
@@ -4675,13 +4751,13 @@ static int addrconf_disable_ipv6(struct ctl_table *table, int *p, int newf)
 }
 
 static
-int addrconf_sysctl_disable(ctl_table *ctl, int write,
+int addrconf_sysctl_disable(struct ctl_table *ctl, int write,
                             void __user *buffer, size_t *lenp, loff_t *ppos)
 {
         int *valp = ctl->data;
         int val = *valp;
         loff_t pos = *ppos;
-        ctl_table lctl;
+        struct ctl_table lctl;
         int ret;
 
         /*
@@ -4703,7 +4779,7 @@ int addrconf_sysctl_disable(ctl_table *ctl, int write,
 static struct addrconf_sysctl_table
 {
         struct ctl_table_header *sysctl_header;
-        ctl_table addrconf_vars[DEVCONF_MAX+1];
+        struct ctl_table addrconf_vars[DEVCONF_MAX+1];
 } addrconf_sysctl __read_mostly = {
         .sysctl_header = NULL,
         .addrconf_vars = {
diff --git a/net/ipv6/addrconf_core.c b/net/ipv6/addrconf_core.c
index 72104562c864..d2f87427244b 100644
--- a/net/ipv6/addrconf_core.c
+++ b/net/ipv6/addrconf_core.c
@@ -5,6 +5,7 @@
 
 #include <linux/export.h>
 #include <net/ipv6.h>
+#include <net/addrconf.h>
 
 #define IPV6_ADDR_SCOPE_TYPE(scope)     ((scope) << 16)
 
diff --git a/net/ipv6/af_inet6.c b/net/ipv6/af_inet6.c
index ab5c7ad482cd..a5ac969aeefe 100644
--- a/net/ipv6/af_inet6.c
+++ b/net/ipv6/af_inet6.c
@@ -49,6 +49,7 @@
 #include <net/udp.h>
 #include <net/udplite.h>
 #include <net/tcp.h>
+#include <net/ping.h>
 #include <net/protocol.h>
 #include <net/inet_common.h>
 #include <net/route.h>
@@ -840,6 +841,9 @@ static int __init inet6_init(void)
         if (err)
                 goto out_unregister_udplite_proto;
 
+        err = proto_register(&pingv6_prot, 1);
+        if (err)
+                goto out_unregister_ping_proto;
 
         /* We MUST register RAW sockets before we create the ICMP6,
          * IGMP6, or NDISC control sockets.
@@ -930,6 +934,10 @@ static int __init inet6_init(void)
         if (err)
                 goto ipv6_packet_fail;
 
+        err = pingv6_init();
+        if (err)
+                goto pingv6_fail;
+
 #ifdef CONFIG_SYSCTL
         err = ipv6_sysctl_register();
         if (err)
@@ -942,6 +950,8 @@ out:
 sysctl_fail:
         ipv6_packet_cleanup();
 #endif
+pingv6_fail:
+        pingv6_exit();
 ipv6_packet_fail:
         tcpv6_exit();
 tcpv6_fail:
@@ -985,6 +995,8 @@ register_pernet_fail:
         rtnl_unregister_all(PF_INET6);
 out_sock_register_fail:
         rawv6_exit();
+out_unregister_ping_proto:
+        proto_unregister(&pingv6_prot);
 out_unregister_raw_proto:
         proto_unregister(&rawv6_prot);
 out_unregister_udplite_proto:
diff --git a/net/ipv6/datagram.c b/net/ipv6/datagram.c
index 4b56cbbc7890..197e6f4a2b74 100644
--- a/net/ipv6/datagram.c
+++ b/net/ipv6/datagram.c
@@ -879,3 +879,30 @@ exit_f:
         return err;
 }
 EXPORT_SYMBOL_GPL(ip6_datagram_send_ctl);
+
+void ip6_dgram_sock_seq_show(struct seq_file *seq, struct sock *sp,
+                             __u16 srcp, __u16 destp, int bucket)
+{
+        struct ipv6_pinfo *np = inet6_sk(sp);
+        const struct in6_addr *dest, *src;
+
+        dest  = &np->daddr;
+        src   = &np->rcv_saddr;
+        seq_printf(seq,
+                   "%5d: %08X%08X%08X%08X:%04X %08X%08X%08X%08X:%04X "
+                   "%02X %08X:%08X %02X:%08lX %08X %5d %8d %lu %d %pK %d\n",
+                   bucket,
+                   src->s6_addr32[0], src->s6_addr32[1],
+                   src->s6_addr32[2], src->s6_addr32[3], srcp,
+                   dest->s6_addr32[0], dest->s6_addr32[1],
+                   dest->s6_addr32[2], dest->s6_addr32[3], destp,
+                   sp->sk_state,
+                   sk_wmem_alloc_get(sp),
+                   sk_rmem_alloc_get(sp),
+                   0, 0L, 0,
+                   from_kuid_munged(seq_user_ns(seq), sock_i_uid(sp)),
+                   0,
+                   sock_i_ino(sp),
+                   atomic_read(&sp->sk_refcnt), sp,
+                   atomic_read(&sp->sk_drops));
+}
diff --git a/net/ipv6/exthdrs_core.c b/net/ipv6/exthdrs_core.c
index c5e83fae4df4..140748debc4a 100644
--- a/net/ipv6/exthdrs_core.c
+++ b/net/ipv6/exthdrs_core.c
@@ -115,7 +115,7 @@ EXPORT_SYMBOL(ipv6_skip_exthdr);
 int ipv6_find_tlv(struct sk_buff *skb, int offset, int type)
 {
         const unsigned char *nh = skb_network_header(skb);
-        int packet_len = skb->tail - skb->network_header;
+        int packet_len = skb_tail_pointer(skb) - skb_network_header(skb);
         struct ipv6_opt_hdr *hdr;
         int len;
 
diff --git a/net/ipv6/icmp.c b/net/ipv6/icmp.c
index b4ff0a42b8c7..7cfc8d284870 100644
--- a/net/ipv6/icmp.c
+++ b/net/ipv6/icmp.c
@@ -57,6 +57,7 @@
 
 #include <net/ipv6.h>
 #include <net/ip6_checksum.h>
+#include <net/ping.h>
 #include <net/protocol.h>
 #include <net/raw.h>
 #include <net/rawv6.h>
@@ -84,12 +85,18 @@ static inline struct sock *icmpv6_sk(struct net *net)
 static void icmpv6_err(struct sk_buff *skb, struct inet6_skb_parm *opt,
                        u8 type, u8 code, int offset, __be32 info)
 {
+        /* icmpv6_notify checks 8 bytes can be pulled, icmp6hdr is 8 bytes */
+        struct icmp6hdr *icmp6 = (struct icmp6hdr *) (skb->data + offset);
         struct net *net = dev_net(skb->dev);
 
         if (type == ICMPV6_PKT_TOOBIG)
                 ip6_update_pmtu(skb, net, info, 0, 0);
         else if (type == NDISC_REDIRECT)
                 ip6_redirect(skb, net, 0, 0);
+
+        if (!(type & ICMPV6_INFOMSG_MASK))
+                if (icmp6->icmp6_type == ICMPV6_ECHO_REQUEST)
+                        ping_err(skb, offset, info);
 }
 
 static int icmpv6_rcv(struct sk_buff *skb);
@@ -224,7 +231,8 @@ static bool opt_unrec(struct sk_buff *skb, __u32 offset)
         return (*op & 0xC0) == 0x80;
 }
 
-static int icmpv6_push_pending_frames(struct sock *sk, struct flowi6 *fl6, struct icmp6hdr *thdr, int len)
+int icmpv6_push_pending_frames(struct sock *sk, struct flowi6 *fl6,
+                               struct icmp6hdr *thdr, int len)
 {
         struct sk_buff *skb;
         struct icmp6hdr *icmp6h;
@@ -307,8 +315,8 @@ static void mip6_addr_swap(struct sk_buff *skb)
 static inline void mip6_addr_swap(struct sk_buff *skb) {}
 #endif
 
-static struct dst_entry *icmpv6_route_lookup(struct net *net, struct sk_buff *skb,
-                                             struct sock *sk, struct flowi6 *fl6)
+struct dst_entry *icmpv6_route_lookup(struct net *net, struct sk_buff *skb,
+                                      struct sock *sk, struct flowi6 *fl6)
 {
         struct dst_entry *dst, *dst2;
         struct flowi6 fl2;
@@ -391,7 +399,7 @@ static void icmp6_send(struct sk_buff *skb, u8 type, u8 code, __u32 info)
         int err = 0;
 
         if ((u8 *)hdr < skb->head ||
-            (skb->network_header + sizeof(*hdr)) > skb->tail)
+            (skb_network_header(skb) + sizeof(*hdr)) > skb_tail_pointer(skb))
                 return;
 
         /*
@@ -697,7 +705,8 @@ static int icmpv6_rcv(struct sk_buff *skb)
                 skb->csum = ~csum_unfold(csum_ipv6_magic(saddr, daddr, skb->len,
                                              IPPROTO_ICMPV6, 0));
                 if (__skb_checksum_complete(skb)) {
-                        LIMIT_NETDEBUG(KERN_DEBUG "ICMPv6 checksum failed [%pI6 > %pI6]\n",
+                        LIMIT_NETDEBUG(KERN_DEBUG
+                                       "ICMPv6 checksum failed [%pI6c > %pI6c]\n",
                                        saddr, daddr);
                         goto csum_error;
                 }
@@ -718,7 +727,7 @@ static int icmpv6_rcv(struct sk_buff *skb)
                 break;
 
         case ICMPV6_ECHO_REPLY:
-                /* we couldn't care less */
+                ping_rcv(skb);
                 break;
 
         case ICMPV6_PKT_TOOBIG:
@@ -967,7 +976,7 @@ int icmpv6_err_convert(u8 type, u8 code, int *err)
 EXPORT_SYMBOL(icmpv6_err_convert);
 
 #ifdef CONFIG_SYSCTL
-ctl_table ipv6_icmp_table_template[] = {
+struct ctl_table ipv6_icmp_table_template[] = {
         {
                 .procname       = "ratelimit",
                 .data           = &init_net.ipv6.sysctl.icmpv6_time,
diff --git a/net/ipv6/ip6_offload.c b/net/ipv6/ip6_offload.c
index 71b766ee821d..a263b990ee11 100644
--- a/net/ipv6/ip6_offload.c
+++ b/net/ipv6/ip6_offload.c
@@ -98,6 +98,7 @@ static struct sk_buff *ipv6_gso_segment(struct sk_buff *skb,
                        SKB_GSO_TCP_ECN |
                        SKB_GSO_GRE |
                        SKB_GSO_UDP_TUNNEL |
+                       SKB_GSO_MPLS |
                        SKB_GSO_TCPV6 |
                        0)))
                 goto out;
diff --git a/net/ipv6/ip6_output.c b/net/ipv6/ip6_output.c
index d5d20cde8d92..6e3ddf806ec2 100644
--- a/net/ipv6/ip6_output.c
+++ b/net/ipv6/ip6_output.c
@@ -1098,11 +1098,12 @@ static inline struct ipv6_rt_hdr *ip6_rthdr_dup(struct ipv6_rt_hdr *src,
         return src ? kmemdup(src, (src->hdrlen + 1) * 8, gfp) : NULL;
 }
 
-static void ip6_append_data_mtu(int *mtu,
+static void ip6_append_data_mtu(unsigned int *mtu,
                                 int *maxfraglen,
                                 unsigned int fragheaderlen,
                                 struct sk_buff *skb,
-                                struct rt6_info *rt)
+                                struct rt6_info *rt,
+                                bool pmtuprobe)
 {
         if (!(rt->dst.flags & DST_XFRM_TUNNEL)) {
                 if (skb == NULL) {
@@ -1114,7 +1115,9 @@ static void ip6_append_data_mtu(int *mtu,
                          * this fragment is not first, the headers
                          * space is regarded as data space.
                          */
-                        *mtu = dst_mtu(rt->dst.path);
+                        *mtu = min(*mtu, pmtuprobe ?
+                                   rt->dst.dev->mtu :
+                                   dst_mtu(rt->dst.path));
                 }
                 *maxfraglen = ((*mtu - fragheaderlen) & ~7)
                               + fragheaderlen - sizeof(struct frag_hdr);
@@ -1131,11 +1134,10 @@ int ip6_append_data(struct sock *sk, int getfrag(void *from, char *to,
         struct ipv6_pinfo *np = inet6_sk(sk);
         struct inet_cork *cork;
         struct sk_buff *skb, *skb_prev = NULL;
-        unsigned int maxfraglen, fragheaderlen;
+        unsigned int maxfraglen, fragheaderlen, mtu;
         int exthdrlen;
         int dst_exthdrlen;
         int hh_len;
-        int mtu;
         int copy;
         int err;
         int offset = 0;
@@ -1292,7 +1294,9 @@ alloc_new_skb:
                         /* update mtu and maxfraglen if necessary */
                         if (skb == NULL || skb_prev == NULL)
                                 ip6_append_data_mtu(&mtu, &maxfraglen,
-                                                    fragheaderlen, skb, rt);
+                                                    fragheaderlen, skb, rt,
+                                                    np->pmtudisc ==
+                                                    IPV6_PMTUDISC_PROBE);
 
                         skb_prev = skb;
 
diff --git a/net/ipv6/ip6mr.c b/net/ipv6/ip6mr.c
index 241fb8ad9fcf..583e8d435f9a 100644
--- a/net/ipv6/ip6mr.c
+++ b/net/ipv6/ip6mr.c
@@ -1319,7 +1319,7 @@ static int ip6mr_mfc_delete(struct mr6_table *mrt, struct mf6cctl *mfc,
 static int ip6mr_device_event(struct notifier_block *this,
                               unsigned long event, void *ptr)
 {
-        struct net_device *dev = ptr;
+        struct net_device *dev = netdev_notifier_info_to_dev(ptr);
         struct net *net = dev_net(dev);
         struct mr6_table *mrt;
         struct mif_device *v;
diff --git a/net/ipv6/mcast.c b/net/ipv6/mcast.c
index bfa6cc36ef2a..99cd65c715cd 100644
--- a/net/ipv6/mcast.c
+++ b/net/ipv6/mcast.c
@@ -999,6 +999,14 @@ static void mld_ifc_start_timer(struct inet6_dev *idev, int delay)
                 in6_dev_hold(idev);
 }
 
+static void mld_dad_start_timer(struct inet6_dev *idev, int delay)
+{
+        int tv = net_random() % delay;
+
+        if (!mod_timer(&idev->mc_dad_timer, jiffies+tv+2))
+                in6_dev_hold(idev);
+}
+
 /*
  *      IGMP handling (alias multicast ICMPv6 messages)
  */
@@ -1343,8 +1351,9 @@ static void ip6_mc_hdr(struct sock *sk, struct sk_buff *skb,
         hdr->daddr = *daddr;
 }
 
-static struct sk_buff *mld_newpack(struct net_device *dev, int size)
+static struct sk_buff *mld_newpack(struct inet6_dev *idev, int size)
 {
+        struct net_device *dev = idev->dev;
         struct net *net = dev_net(dev);
         struct sock *sk = net->ipv6.igmp_sk;
         struct sk_buff *skb;
@@ -1369,7 +1378,7 @@ static struct sk_buff *mld_newpack(struct net_device *dev, int size)
 
         skb_reserve(skb, hlen);
 
-        if (ipv6_get_lladdr(dev, &addr_buf, IFA_F_TENTATIVE)) {
+        if (__ipv6_get_lladdr(idev, &addr_buf, IFA_F_TENTATIVE)) {
                 /* <draft-ietf-magma-mld-source-05.txt>:
                  * use unspecified address as the source address
                  * when a valid link-local address is not available.
@@ -1409,8 +1418,9 @@ static void mld_sendpack(struct sk_buff *skb)
         idev = __in6_dev_get(skb->dev);
         IP6_UPD_PO_STATS(net, idev, IPSTATS_MIB_OUT, skb->len);
 
-        payload_len = (skb->tail - skb->network_header) - sizeof(*pip6);
-        mldlen = skb->tail - skb->transport_header;
+        payload_len = (skb_tail_pointer(skb) - skb_network_header(skb)) -
+                sizeof(*pip6);
+        mldlen = skb_tail_pointer(skb) - skb_transport_header(skb);
         pip6->payload_len = htons(payload_len);
 
         pmr->mld2r_cksum = csum_ipv6_magic(&pip6->saddr, &pip6->daddr, mldlen,
@@ -1465,7 +1475,7 @@ static struct sk_buff *add_grhead(struct sk_buff *skb, struct ifmcaddr6 *pmc,
         struct mld2_grec *pgr;
 
         if (!skb)
-                skb = mld_newpack(dev, dev->mtu);
+                skb = mld_newpack(pmc->idev, dev->mtu);
         if (!skb)
                 return NULL;
         pgr = (struct mld2_grec *)skb_put(skb, sizeof(struct mld2_grec));
@@ -1485,7 +1495,8 @@ static struct sk_buff *add_grhead(struct sk_buff *skb, struct ifmcaddr6 *pmc,
 static struct sk_buff *add_grec(struct sk_buff *skb, struct ifmcaddr6 *pmc,
         int type, int gdeleted, int sdeleted)
 {
-        struct net_device *dev = pmc->idev->dev;
+        struct inet6_dev *idev = pmc->idev;
+        struct net_device *dev = idev->dev;
         struct mld2_report *pmr;
         struct mld2_grec *pgr = NULL;
         struct ip6_sf_list *psf, *psf_next, *psf_prev, **psf_list;
@@ -1514,7 +1525,7 @@ static struct sk_buff *add_grec(struct sk_buff *skb, struct ifmcaddr6 *pmc,
                     AVAILABLE(skb) < grec_size(pmc, type, gdeleted, sdeleted)) {
                         if (skb)
                                 mld_sendpack(skb);
-                        skb = mld_newpack(dev, dev->mtu);
+                        skb = mld_newpack(idev, dev->mtu);
                 }
         }
         first = 1;
@@ -1541,7 +1552,7 @@ static struct sk_buff *add_grec(struct sk_buff *skb, struct ifmcaddr6 *pmc,
                                 pgr->grec_nsrcs = htons(scount);
                         if (skb)
                                 mld_sendpack(skb);
-                        skb = mld_newpack(dev, dev->mtu);
+                        skb = mld_newpack(idev, dev->mtu);
                         first = 1;
                         scount = 0;
                 }
@@ -1596,8 +1607,8 @@ static void mld_send_report(struct inet6_dev *idev, struct ifmcaddr6 *pmc)
         struct sk_buff *skb = NULL;
         int type;
 
+        read_lock_bh(&idev->lock);
         if (!pmc) {
-                read_lock_bh(&idev->lock);
                 for (pmc=idev->mc_list; pmc; pmc=pmc->next) {
                         if (pmc->mca_flags & MAF_NOREPORT)
                                 continue;
@@ -1609,7 +1620,6 @@ static void mld_send_report(struct inet6_dev *idev, struct ifmcaddr6 *pmc)
                         skb = add_grec(skb, pmc, type, 0, 0);
                         spin_unlock_bh(&pmc->mca_lock);
                 }
-                read_unlock_bh(&idev->lock);
         } else {
                 spin_lock_bh(&pmc->mca_lock);
                 if (pmc->mca_sfcount[MCAST_EXCLUDE])
@@ -1619,6 +1629,7 @@ static void mld_send_report(struct inet6_dev *idev, struct ifmcaddr6 *pmc)
                 skb = add_grec(skb, pmc, type, 0, 0);
                 spin_unlock_bh(&pmc->mca_lock);
         }
+        read_unlock_bh(&idev->lock);
         if (skb)
                 mld_sendpack(skb);
 }
@@ -1814,6 +1825,46 @@ err_out:
         goto out;
 }
 
+static void mld_resend_report(struct inet6_dev *idev)
+{
+        if (MLD_V1_SEEN(idev)) {
+                struct ifmcaddr6 *mcaddr;
+                read_lock_bh(&idev->lock);
+                for (mcaddr = idev->mc_list; mcaddr; mcaddr = mcaddr->next) {
+                        if (!(mcaddr->mca_flags & MAF_NOREPORT))
+                                igmp6_send(&mcaddr->mca_addr, idev->dev,
+                                           ICMPV6_MGM_REPORT);
+                }
+                read_unlock_bh(&idev->lock);
+        } else {
+                mld_send_report(idev, NULL);
+        }
+}
+
+void ipv6_mc_dad_complete(struct inet6_dev *idev)
+{
+        idev->mc_dad_count = idev->mc_qrv;
+        if (idev->mc_dad_count) {
+                mld_resend_report(idev);
+                idev->mc_dad_count--;
+                if (idev->mc_dad_count)
+                        mld_dad_start_timer(idev, idev->mc_maxdelay);
+        }
+}
+
+static void mld_dad_timer_expire(unsigned long data)
+{
+        struct inet6_dev *idev = (struct inet6_dev *)data;
+
+        mld_resend_report(idev);
+        if (idev->mc_dad_count) {
+                idev->mc_dad_count--;
+                if (idev->mc_dad_count)
+                        mld_dad_start_timer(idev, idev->mc_maxdelay);
+        }
+        __in6_dev_put(idev);
+}
+
 static int ip6_mc_del1_src(struct ifmcaddr6 *pmc, int sfmode,
         const struct in6_addr *psfsrc)
 {
@@ -2231,6 +2282,8 @@ void ipv6_mc_down(struct inet6_dev *idev)
         idev->mc_gq_running = 0;
         if (del_timer(&idev->mc_gq_timer))
                 __in6_dev_put(idev);
+        if (del_timer(&idev->mc_dad_timer))
+                __in6_dev_put(idev);
 
         for (i = idev->mc_list; i; i=i->next)
                 igmp6_group_dropped(i);
@@ -2267,6 +2320,8 @@ void ipv6_mc_init_dev(struct inet6_dev *idev)
         idev->mc_ifc_count = 0;
         setup_timer(&idev->mc_ifc_timer, mld_ifc_timer_expire,
                         (unsigned long)idev);
+        setup_timer(&idev->mc_dad_timer, mld_dad_timer_expire,
+                    (unsigned long)idev);
         idev->mc_qrv = MLD_QRV_DEFAULT;
         idev->mc_maxdelay = IGMP6_UNSOLICITED_IVAL;
         idev->mc_v1_seen = 0;
diff --git a/net/ipv6/mip6.c b/net/ipv6/mip6.c
index 0f9bdc5ee9f3..9ac01dc9402e 100644
--- a/net/ipv6/mip6.c
+++ b/net/ipv6/mip6.c
@@ -268,7 +268,8 @@ static int mip6_destopt_offset(struct xfrm_state *x, struct sk_buff *skb,
         struct ipv6_opt_hdr *exthdr =
                                    (struct ipv6_opt_hdr *)(ipv6_hdr(skb) + 1);
         const unsigned char *nh = skb_network_header(skb);
-        unsigned int packet_len = skb->tail - skb->network_header;
+        unsigned int packet_len = skb_tail_pointer(skb) -
+                skb_network_header(skb);
         int found_rhdr = 0;
 
         *nexthdr = &ipv6_hdr(skb)->nexthdr;
@@ -404,7 +405,8 @@ static int mip6_rthdr_offset(struct xfrm_state *x, struct sk_buff *skb,
         struct ipv6_opt_hdr *exthdr =
                                    (struct ipv6_opt_hdr *)(ipv6_hdr(skb) + 1);
         const unsigned char *nh = skb_network_header(skb);
-        unsigned int packet_len = skb->tail - skb->network_header;
+        unsigned int packet_len = skb_tail_pointer(skb) -
+                skb_network_header(skb);
         int found_rhdr = 0;
 
         *nexthdr = &ipv6_hdr(skb)->nexthdr;
diff --git a/net/ipv6/ndisc.c b/net/ipv6/ndisc.c
index ca4ffcc287f1..b3b5730b48c5 100644
--- a/net/ipv6/ndisc.c
+++ b/net/ipv6/ndisc.c
@@ -693,7 +693,7 @@ static void ndisc_recv_ns(struct sk_buff *skb)
         const struct in6_addr *saddr = &ipv6_hdr(skb)->saddr;
         const struct in6_addr *daddr = &ipv6_hdr(skb)->daddr;
         u8 *lladdr = NULL;
-        u32 ndoptlen = skb->tail - (skb->transport_header +
+        u32 ndoptlen = skb_tail_pointer(skb) - (skb_transport_header(skb) +
                                     offsetof(struct nd_msg, opt));
         struct ndisc_options ndopts;
         struct net_device *dev = skb->dev;
@@ -853,7 +853,7 @@ static void ndisc_recv_na(struct sk_buff *skb)
         const struct in6_addr *saddr = &ipv6_hdr(skb)->saddr;
         const struct in6_addr *daddr = &ipv6_hdr(skb)->daddr;
         u8 *lladdr = NULL;
-        u32 ndoptlen = skb->tail - (skb->transport_header +
+        u32 ndoptlen = skb_tail_pointer(skb) - (skb_transport_header(skb) +
                                     offsetof(struct nd_msg, opt));
         struct ndisc_options ndopts;
         struct net_device *dev = skb->dev;
@@ -1069,7 +1069,8 @@ static void ndisc_router_discovery(struct sk_buff *skb)
 
         __u8 * opt = (__u8 *)(ra_msg + 1);
 
-        optlen = (skb->tail - skb->transport_header) - sizeof(struct ra_msg);
+        optlen = (skb_tail_pointer(skb) - skb_transport_header(skb)) -
+                sizeof(struct ra_msg);
 
         if (!(ipv6_addr_type(&ipv6_hdr(skb)->saddr) & IPV6_ADDR_LINKLOCAL)) {
                 ND_PRINTK(2, warn, "RA: source address is not link-local\n");
@@ -1346,7 +1347,7 @@ static void ndisc_redirect_rcv(struct sk_buff *skb)
         u8 *hdr;
         struct ndisc_options ndopts;
         struct rd_msg *msg = (struct rd_msg *)skb_transport_header(skb);
-        u32 ndoptlen = skb->tail - (skb->transport_header +
+        u32 ndoptlen = skb_tail_pointer(skb) - (skb_transport_header(skb) +
                                     offsetof(struct rd_msg, opt));
 
 #ifdef CONFIG_IPV6_NDISC_NODETYPE
@@ -1568,7 +1569,7 @@ int ndisc_rcv(struct sk_buff *skb)
 
 static int ndisc_netdev_event(struct notifier_block *this, unsigned long event, void *ptr)
 {
-        struct net_device *dev = ptr;
+        struct net_device *dev = netdev_notifier_info_to_dev(ptr);
         struct net *net = dev_net(dev);
         struct inet6_dev *idev;
 
diff --git a/net/ipv6/netfilter/ip6t_MASQUERADE.c b/net/ipv6/netfilter/ip6t_MASQUERADE.c
index 60e9053bab05..47bff6107519 100644
--- a/net/ipv6/netfilter/ip6t_MASQUERADE.c
+++ b/net/ipv6/netfilter/ip6t_MASQUERADE.c
@@ -71,7 +71,7 @@ static int device_cmp(struct nf_conn *ct, void *ifindex)
 static int masq_device_event(struct notifier_block *this,
                              unsigned long event, void *ptr)
 {
-        const struct net_device *dev = ptr;
+        const struct net_device *dev = netdev_notifier_info_to_dev(ptr);
         struct net *net = dev_net(dev);
 
         if (event == NETDEV_DOWN)
@@ -89,8 +89,10 @@ static int masq_inet_event(struct notifier_block *this,
                            unsigned long event, void *ptr)
 {
         struct inet6_ifaddr *ifa = ptr;
+        struct netdev_notifier_info info;
 
-        return masq_device_event(this, event, ifa->idev->dev);
+        netdev_notifier_info_init(&info, ifa->idev->dev);
+        return masq_device_event(this, event, &info);
 }
 
 static struct notifier_block masq_inet_notifier = {
diff --git a/net/ipv6/output_core.c b/net/ipv6/output_core.c
index c2e73e647e44..ab92a3673fbb 100644
--- a/net/ipv6/output_core.c
+++ b/net/ipv6/output_core.c
@@ -40,7 +40,8 @@ int ip6_find_1stfragopt(struct sk_buff *skb, u8 **nexthdr)
         u16 offset = sizeof(struct ipv6hdr);
         struct ipv6_opt_hdr *exthdr =
                                 (struct ipv6_opt_hdr *)(ipv6_hdr(skb) + 1);
-        unsigned int packet_len = skb->tail - skb->network_header;
+        unsigned int packet_len = skb_tail_pointer(skb) -
+                skb_network_header(skb);
         int found_rhdr = 0;
         *nexthdr = &ipv6_hdr(skb)->nexthdr;
 
diff --git a/net/ipv6/ping.c b/net/ipv6/ping.c
new file mode 100644
index 000000000000..18f19df4189f
--- /dev/null
+++ b/net/ipv6/ping.c
@@ -0,0 +1,277 @@
+/*
+ * INET         An implementation of the TCP/IP protocol suite for the LINUX
+ *              operating system.  INET is implemented using the  BSD Socket
+ *              interface as the means of communication with the user level.
+ *
+ *              "Ping" sockets
+ *
+ *              This program is free software; you can redistribute it and/or
+ *              modify it under the terms of the GNU General Public License
+ *              as published by the Free Software Foundation; either version
+ *              2 of the License, or (at your option) any later version.
+ *
+ * Based on ipv4/ping.c code.
+ *
+ * Authors:     Lorenzo Colitti (IPv6 support)
+ *              Vasiliy Kulikov / Openwall (IPv4 implementation, for Linux 2.6),
+ *              Pavel Kankovsky (IPv4 implementation, for Linux 2.4.32)
+ *
+ */
+
+#include <net/addrconf.h>
+#include <net/ipv6.h>
+#include <net/ip6_route.h>
+#include <net/protocol.h>
+#include <net/udp.h>
+#include <net/transp_v6.h>
+#include <net/ping.h>
+
+struct proto pingv6_prot = {
+        .name =         "PINGv6",
+        .owner =        THIS_MODULE,
+        .init =         ping_init_sock,
+        .close =        ping_close,
+        .connect =      ip6_datagram_connect,
+        .disconnect =   udp_disconnect,
+        .setsockopt =   ipv6_setsockopt,
+        .getsockopt =   ipv6_getsockopt,
+        .sendmsg =      ping_v6_sendmsg,
+        .recvmsg =      ping_recvmsg,
+        .bind =         ping_bind,
+        .backlog_rcv =  ping_queue_rcv_skb,
+        .hash =         ping_hash,
+        .unhash =       ping_unhash,
+        .get_port =     ping_get_port,
+        .obj_size =     sizeof(struct raw6_sock),
+};
+EXPORT_SYMBOL_GPL(pingv6_prot);
+
+static struct inet_protosw pingv6_protosw = {
+        .type =      SOCK_DGRAM,
+        .protocol =  IPPROTO_ICMPV6,
+        .prot =      &pingv6_prot,
+        .ops =       &inet6_dgram_ops,
+        .no_check =  UDP_CSUM_DEFAULT,
+        .flags =     INET_PROTOSW_REUSE,
+};
+
+
+/* Compatibility glue so we can support IPv6 when it's compiled as a module */
+static int dummy_ipv6_recv_error(struct sock *sk, struct msghdr *msg, int len)
+{
+        return -EAFNOSUPPORT;
+}
+static int dummy_ip6_datagram_recv_ctl(struct sock *sk, struct msghdr *msg,
+                                       struct sk_buff *skb)
+{
+        return -EAFNOSUPPORT;
+}
+static int dummy_icmpv6_err_convert(u8 type, u8 code, int *err)
+{
+        return -EAFNOSUPPORT;
+}
+static void dummy_ipv6_icmp_error(struct sock *sk, struct sk_buff *skb, int err,
+                                  __be16 port, u32 info, u8 *payload) {}
+static int dummy_ipv6_chk_addr(struct net *net, const struct in6_addr *addr,
+                               const struct net_device *dev, int strict)
+{
+        return 0;
+}
+
+int ping_v6_sendmsg(struct kiocb *iocb, struct sock *sk, struct msghdr *msg,
+                    size_t len)
+{
+        struct inet_sock *inet = inet_sk(sk);
+        struct ipv6_pinfo *np = inet6_sk(sk);
+        struct icmp6hdr user_icmph;
+        int addr_type;
+        struct in6_addr *daddr;
+        int iif = 0;
+        struct flowi6 fl6;
+        int err;
+        int hlimit;
+        struct dst_entry *dst;
+        struct rt6_info *rt;
+        struct pingfakehdr pfh;
+
+        pr_debug("ping_v6_sendmsg(sk=%p,sk->num=%u)\n", inet, inet->inet_num);
+
+        err = ping_common_sendmsg(AF_INET6, msg, len, &user_icmph,
+                                  sizeof(user_icmph));
+        if (err)
+                return err;
+
+        if (msg->msg_name) {
+                struct sockaddr_in6 *u = (struct sockaddr_in6 *) msg->msg_name;
+                if (msg->msg_namelen < sizeof(struct sockaddr_in6) ||
+                    u->sin6_family != AF_INET6) {
+                        return -EINVAL;
+                }
+                if (sk->sk_bound_dev_if &&
+                    sk->sk_bound_dev_if != u->sin6_scope_id) {
+                        return -EINVAL;
+                }
+                daddr = &(u->sin6_addr);
+                iif = u->sin6_scope_id;
+        } else {
+                if (sk->sk_state != TCP_ESTABLISHED)
+                        return -EDESTADDRREQ;
+                daddr = &np->daddr;
+        }
+
+        if (!iif)
+                iif = sk->sk_bound_dev_if;
+
+        addr_type = ipv6_addr_type(daddr);
+        if (__ipv6_addr_needs_scope_id(addr_type) && !iif)
+                return -EINVAL;
+        if (addr_type & IPV6_ADDR_MAPPED)
+                return -EINVAL;
+
+        /* TODO: use ip6_datagram_send_ctl to get options from cmsg */
+
+        memset(&fl6, 0, sizeof(fl6));
+
+        fl6.flowi6_proto = IPPROTO_ICMPV6;
+        fl6.saddr = np->saddr;
+        fl6.daddr = *daddr;
+        fl6.fl6_icmp_type = user_icmph.icmp6_type;
+        fl6.fl6_icmp_code = user_icmph.icmp6_code;
+        security_sk_classify_flow(sk, flowi6_to_flowi(&fl6));
+
+        if (!fl6.flowi6_oif && ipv6_addr_is_multicast(&fl6.daddr))
+                fl6.flowi6_oif = np->mcast_oif;
+        else if (!fl6.flowi6_oif)
+                fl6.flowi6_oif = np->ucast_oif;
+
+        dst = ip6_sk_dst_lookup_flow(sk, &fl6,  daddr, 1);
+        if (IS_ERR(dst))
+                return PTR_ERR(dst);
+        rt = (struct rt6_info *) dst;
+
+        np = inet6_sk(sk);
+        if (!np)
+                return -EBADF;
+
+        if (!fl6.flowi6_oif && ipv6_addr_is_multicast(&fl6.daddr))
+                fl6.flowi6_oif = np->mcast_oif;
+        else if (!fl6.flowi6_oif)
+                fl6.flowi6_oif = np->ucast_oif;
+
+        pfh.icmph.type = user_icmph.icmp6_type;
+        pfh.icmph.code = user_icmph.icmp6_code;
+        pfh.icmph.checksum = 0;
+        pfh.icmph.un.echo.id = inet->inet_sport;
+        pfh.icmph.un.echo.sequence = user_icmph.icmp6_sequence;
+        pfh.iov = msg->msg_iov;
+        pfh.wcheck = 0;
+        pfh.family = AF_INET6;
+
+        if (ipv6_addr_is_multicast(&fl6.daddr))
+                hlimit = np->mcast_hops;
+        else
+                hlimit = np->hop_limit;
+        if (hlimit < 0)
+                hlimit = ip6_dst_hoplimit(dst);
+
+        lock_sock(sk);
+        err = ip6_append_data(sk, ping_getfrag, &pfh, len,
+                              0, hlimit,
+                              np->tclass, NULL, &fl6, rt,
+                              MSG_DONTWAIT, np->dontfrag);
+
+        if (err) {
+                ICMP6_INC_STATS_BH(sock_net(sk), rt->rt6i_idev,
+                                   ICMP6_MIB_OUTERRORS);
+                ip6_flush_pending_frames(sk);
+        } else {
+                err = icmpv6_push_pending_frames(sk, &fl6,
+                                                 (struct icmp6hdr *) &pfh.icmph,
+                                                 len);
+        }
+        release_sock(sk);
+
+        if (err)
+                return err;
+
+        return len;
+}
+
+#ifdef CONFIG_PROC_FS
+static void *ping_v6_seq_start(struct seq_file *seq, loff_t *pos)
+{
+        return ping_seq_start(seq, pos, AF_INET6);
+}
+
+static int ping_v6_seq_show(struct seq_file *seq, void *v)
+{
+        if (v == SEQ_START_TOKEN) {
+                seq_puts(seq, IPV6_SEQ_DGRAM_HEADER);
+        } else {
+                int bucket = ((struct ping_iter_state *) seq->private)->bucket;
+                struct inet_sock *inet = inet_sk(v);
+                __u16 srcp = ntohs(inet->inet_sport);
+                __u16 destp = ntohs(inet->inet_dport);
+                ip6_dgram_sock_seq_show(seq, v, srcp, destp, bucket);
+        }
+        return 0;
+}
+
+static struct ping_seq_afinfo ping_v6_seq_afinfo = {
+        .name           = "icmp6",
+        .family         = AF_INET6,
+        .seq_fops       = &ping_seq_fops,
+        .seq_ops        = {
+                .start          = ping_v6_seq_start,
+                .show           = ping_v6_seq_show,
+                .next           = ping_seq_next,
+                .stop           = ping_seq_stop,
+        },
+};
+
+static int __net_init ping_v6_proc_init_net(struct net *net)
+{
+        return ping_proc_register(net, &ping_v6_seq_afinfo);
+}
+
+static void __net_init ping_v6_proc_exit_net(struct net *net)
+{
+        return ping_proc_unregister(net, &ping_v6_seq_afinfo);
+}
+
+static struct pernet_operations ping_v6_net_ops = {
+        .init = ping_v6_proc_init_net,
+        .exit = ping_v6_proc_exit_net,
+};
+#endif
+
+int __init pingv6_init(void)
+{
+#ifdef CONFIG_PROC_FS
+        int ret = register_pernet_subsys(&ping_v6_net_ops);
+        if (ret)
+                return ret;
+#endif
+        pingv6_ops.ipv6_recv_error = ipv6_recv_error;
+        pingv6_ops.ip6_datagram_recv_ctl = ip6_datagram_recv_ctl;
+        pingv6_ops.icmpv6_err_convert = icmpv6_err_convert;
+        pingv6_ops.ipv6_icmp_error = ipv6_icmp_error;
+        pingv6_ops.ipv6_chk_addr = ipv6_chk_addr;
+        return inet6_register_protosw(&pingv6_protosw);
+}
+
+/* This never gets called because it's not possible to unload the ipv6 module,
+ * but just in case.
+ */
+void pingv6_exit(void)
+{
+        pingv6_ops.ipv6_recv_error = dummy_ipv6_recv_error;
+        pingv6_ops.ip6_datagram_recv_ctl = dummy_ip6_datagram_recv_ctl;
+        pingv6_ops.icmpv6_err_convert = dummy_icmpv6_err_convert;
+        pingv6_ops.ipv6_icmp_error = dummy_ipv6_icmp_error;
+        pingv6_ops.ipv6_chk_addr = dummy_ipv6_chk_addr;
+#ifdef CONFIG_PROC_FS
+        unregister_pernet_subsys(&ping_v6_net_ops);
+#endif
+        inet6_unregister_protosw(&pingv6_protosw);
+}
diff --git a/net/ipv6/raw.c b/net/ipv6/raw.c
index eedff8ccded5..c45f7a5c36e9 100644
--- a/net/ipv6/raw.c
+++ b/net/ipv6/raw.c
@@ -1132,7 +1132,8 @@ static int rawv6_ioctl(struct sock *sk, int cmd, unsigned long arg)
                 spin_lock_bh(&sk->sk_receive_queue.lock);
                 skb = skb_peek(&sk->sk_receive_queue);
                 if (skb != NULL)
-                        amount = skb->tail - skb->transport_header;
+                        amount = skb_tail_pointer(skb) -
+                                skb_transport_header(skb);
                 spin_unlock_bh(&sk->sk_receive_queue.lock);
                 return put_user(amount, (int __user *)arg);
         }
@@ -1226,45 +1227,16 @@ struct proto rawv6_prot = {
 };
 
 #ifdef CONFIG_PROC_FS
-static void raw6_sock_seq_show(struct seq_file *seq, struct sock *sp, int i)
-{
-        struct ipv6_pinfo *np = inet6_sk(sp);
-        const struct in6_addr *dest, *src;
-        __u16 destp, srcp;
-
-        dest  = &np->daddr;
-        src   = &np->rcv_saddr;
-        destp = 0;
-        srcp  = inet_sk(sp)->inet_num;
-        seq_printf(seq,
-                   "%4d: %08X%08X%08X%08X:%04X %08X%08X%08X%08X:%04X "
-                   "%02X %08X:%08X %02X:%08lX %08X %5d %8d %lu %d %pK %d\n",
-                   i,
-                   src->s6_addr32[0], src->s6_addr32[1],
-                   src->s6_addr32[2], src->s6_addr32[3], srcp,
-                   dest->s6_addr32[0], dest->s6_addr32[1],
-                   dest->s6_addr32[2], dest->s6_addr32[3], destp,
-                   sp->sk_state,
-                   sk_wmem_alloc_get(sp),
-                   sk_rmem_alloc_get(sp),
-                   0, 0L, 0,
-                   from_kuid_munged(seq_user_ns(seq), sock_i_uid(sp)),
-                   0,
-                   sock_i_ino(sp),
-                   atomic_read(&sp->sk_refcnt), sp, atomic_read(&sp->sk_drops));
-}
-
 static int raw6_seq_show(struct seq_file *seq, void *v)
 {
-        if (v == SEQ_START_TOKEN)
-                seq_printf(seq,
-                           "  sl  "
-                           "local_address                         "
-                           "remote_address                        "
-                           "st tx_queue rx_queue tr tm->when retrnsmt"
-                           "   uid  timeout inode ref pointer drops\n");
-        else
-                raw6_sock_seq_show(seq, v, raw_seq_private(seq)->bucket);
+        if (v == SEQ_START_TOKEN) {
+                seq_puts(seq, IPV6_SEQ_DGRAM_HEADER);
+        } else {
+                struct sock *sp = v;
+                __u16 srcp  = inet_sk(sp)->inet_num;
+                ip6_dgram_sock_seq_show(seq, v, srcp, 0,
+                                        raw_seq_private(seq)->bucket);
+        }
         return 0;
 }
 
diff --git a/net/ipv6/route.c b/net/ipv6/route.c
index ad0aa6b0b86a..bd5fd7054031 100644
--- a/net/ipv6/route.c
+++ b/net/ipv6/route.c
@@ -83,6 +83,7 @@ static void		ip6_rt_update_pmtu(struct dst_entry *dst, struct sock *sk,
                                            struct sk_buff *skb, u32 mtu);
 static void             rt6_do_redirect(struct dst_entry *dst, struct sock *sk,
                                         struct sk_buff *skb);
+static int rt6_score_route(struct rt6_info *rt, int oif, int strict);
 
 #ifdef CONFIG_IPV6_ROUTE_INFO
 static struct rt6_info *rt6_add_route_info(struct net *net,
@@ -394,7 +395,8 @@ static int rt6_info_hash_nhsfn(unsigned int candidate_count,
 }
 
 static struct rt6_info *rt6_multipath_select(struct rt6_info *match,
-                                             struct flowi6 *fl6)
+                                             struct flowi6 *fl6, int oif,
+                                             int strict)
 {
         struct rt6_info *sibling, *next_sibling;
         int route_choosen;
@@ -408,6 +410,8 @@ static struct rt6_info *rt6_multipath_select(struct rt6_info *match,
                                 &match->rt6i_siblings, rt6i_siblings) {
                         route_choosen--;
                         if (route_choosen == 0) {
+                                if (rt6_score_route(sibling, oif, strict) < 0)
+                                        break;
                                 match = sibling;
                                 break;
                         }
@@ -547,6 +551,8 @@ static inline bool rt6_check_neigh(struct rt6_info *rt)
                         ret = true;
 #endif
                 read_unlock(&neigh->lock);
+        } else if (IS_ENABLED(CONFIG_IPV6_ROUTER_PREF)) {
+                ret = true;
         }
         rcu_read_unlock_bh();
 
@@ -743,7 +749,7 @@ restart:
         rt = fn->leaf;
         rt = rt6_device_match(net, rt, &fl6->saddr, fl6->flowi6_oif, flags);
         if (rt->rt6i_nsiblings && fl6->flowi6_oif == 0)
-                rt = rt6_multipath_select(rt, fl6);
+                rt = rt6_multipath_select(rt, fl6, fl6->flowi6_oif, flags);
         BACKTRACK(net, &fl6->saddr);
 out:
         dst_use(&rt->dst, jiffies);
@@ -875,8 +881,8 @@ restart_2:
 
 restart:
         rt = rt6_select(fn, oif, strict | reachable);
-        if (rt->rt6i_nsiblings && oif == 0)
-                rt = rt6_multipath_select(rt, fl6);
+        if (rt->rt6i_nsiblings)
+                rt = rt6_multipath_select(rt, fl6, oif, strict | reachable);
         BACKTRACK(net, &fl6->saddr);
         if (rt == net->ipv6.ip6_null_entry ||
             rt->rt6i_flags & RTF_CACHE)
@@ -1649,7 +1655,7 @@ static void rt6_do_redirect(struct dst_entry *dst, struct sock *sk, struct sk_bu
         int optlen, on_link;
         u8 *lladdr;
 
-        optlen = skb->tail - skb->transport_header;
+        optlen = skb_tail_pointer(skb) - skb_transport_header(skb);
         optlen -= sizeof(*msg);
 
         if (optlen < 0) {
@@ -2681,9 +2687,9 @@ errout:
 }
 
 static int ip6_route_dev_notify(struct notifier_block *this,
-                                unsigned long event, void *data)
+                                unsigned long event, void *ptr)
 {
-        struct net_device *dev = (struct net_device *)data;
+        struct net_device *dev = netdev_notifier_info_to_dev(ptr);
         struct net *net = dev_net(dev);
 
         if (event == NETDEV_REGISTER && (dev->flags & IFF_LOOPBACK)) {
@@ -2790,7 +2796,7 @@ static const struct file_operations rt6_stats_seq_fops = {
 #ifdef CONFIG_SYSCTL
 
 static
-int ipv6_sysctl_rtcache_flush(ctl_table *ctl, int write,
+int ipv6_sysctl_rtcache_flush(struct ctl_table *ctl, int write,
                               void __user *buffer, size_t *lenp, loff_t *ppos)
 {
         struct net *net;
@@ -2805,7 +2811,7 @@ int ipv6_sysctl_rtcache_flush(ctl_table *ctl, int write,
         return 0;
 }
 
-ctl_table ipv6_route_table_template[] = {
+struct ctl_table ipv6_route_table_template[] = {
         {
                 .procname       =       "flush",
                 .data           =       &init_net.ipv6.sysctl.flush_delay,
diff --git a/net/ipv6/sit.c b/net/ipv6/sit.c
index 335363478bbf..a3437a4cd07e 100644
--- a/net/ipv6/sit.c
+++ b/net/ipv6/sit.c
@@ -466,14 +466,14 @@ isatap_chksrc(struct sk_buff *skb, const struct iphdr *iph, struct ip_tunnel *t)
 
 static void ipip6_tunnel_uninit(struct net_device *dev)
 {
-        struct net *net = dev_net(dev);
-        struct sit_net *sitn = net_generic(net, sit_net_id);
+        struct ip_tunnel *tunnel = netdev_priv(dev);
+        struct sit_net *sitn = net_generic(tunnel->net, sit_net_id);
 
         if (dev == sitn->fb_tunnel_dev) {
                 RCU_INIT_POINTER(sitn->tunnels_wc[0], NULL);
         } else {
-                ipip6_tunnel_unlink(sitn, netdev_priv(dev));
-                ipip6_tunnel_del_prl(netdev_priv(dev), NULL);
+                ipip6_tunnel_unlink(sitn, tunnel);
+                ipip6_tunnel_del_prl(tunnel, NULL);
         }
         dev_put(dev);
 }
@@ -577,6 +577,10 @@ static int ipip6_rcv(struct sk_buff *skb)
         if (tunnel != NULL) {
                 struct pcpu_tstats *tstats;
 
+                if (tunnel->parms.iph.protocol != IPPROTO_IPV6 &&
+                    tunnel->parms.iph.protocol != 0)
+                        goto out;
+
                 secpath_reset(skb);
                 skb->mac_header = skb->network_header;
                 skb_reset_network_header(skb);
@@ -589,7 +593,7 @@ static int ipip6_rcv(struct sk_buff *skb)
                                 tunnel->dev->stats.rx_errors++;
                                 goto out;
                         }
-                } else {
+                } else if (!(tunnel->dev->flags&IFF_POINTOPOINT)) {
                         if (is_spoofed_6rd(tunnel, iph->saddr,
                                            &ipv6_hdr(skb)->saddr) ||
                             is_spoofed_6rd(tunnel, iph->daddr,
@@ -617,6 +621,8 @@ static int ipip6_rcv(struct sk_buff *skb)
                 tstats->rx_packets++;
                 tstats->rx_bytes += skb->len;
 
+                if (tunnel->net != dev_net(tunnel->dev))
+                        skb_scrub_packet(skb);
                 netif_rx(skb);
 
                 return 0;
@@ -629,6 +635,40 @@ out:
         return 0;
 }
 
+static const struct tnl_ptk_info tpi = {
+        /* no tunnel info required for ipip. */
+        .proto = htons(ETH_P_IP),
+};
+
+static int ipip_rcv(struct sk_buff *skb)
+{
+        const struct iphdr *iph;
+        struct ip_tunnel *tunnel;
+
+        if (iptunnel_pull_header(skb, 0, tpi.proto))
+                goto drop;
+
+        iph = ip_hdr(skb);
+
+        tunnel = ipip6_tunnel_lookup(dev_net(skb->dev), skb->dev,
+                                     iph->saddr, iph->daddr);
+        if (tunnel != NULL) {
+                if (tunnel->parms.iph.protocol != IPPROTO_IPIP &&
+                    tunnel->parms.iph.protocol != 0)
+                        goto drop;
+
+                if (!xfrm4_policy_check(NULL, XFRM_POLICY_IN, skb))
+                        goto drop;
+                return ip_tunnel_rcv(tunnel, skb, &tpi, log_ecn_error);
+        }
+
+        return 1;
+
+drop:
+        kfree_skb(skb);
+        return 0;
+}
+
 /*
  * If the IPv6 address comes from 6rd / 6to4 (RFC 3056) addr space this function
  * stores the embedded IPv4 address in v4dst and returns true.
@@ -690,13 +730,14 @@ static netdev_tx_t ipip6_tunnel_xmit(struct sk_buff *skb,
         __be16 df = tiph->frag_off;
         struct rtable *rt;                      /* Route to the other host */
         struct net_device *tdev;                /* Device to other host */
-        struct iphdr  *iph;                     /* Our new IP header */
         unsigned int max_headroom;              /* The extra header space needed */
         __be32 dst = tiph->daddr;
         struct flowi4 fl4;
         int    mtu;
         const struct in6_addr *addr6;
         int addr_type;
+        u8 ttl;
+        int err;
 
         if (skb->protocol != htons(ETH_P_IPV6))
                 goto tx_error;
@@ -764,7 +805,7 @@ static netdev_tx_t ipip6_tunnel_xmit(struct sk_buff *skb,
                         goto tx_error;
         }
 
-        rt = ip_route_output_ports(dev_net(dev), &fl4, NULL,
+        rt = ip_route_output_ports(tunnel->net, &fl4, NULL,
                                    dst, tiph->saddr,
                                    0, 0,
                                    IPPROTO_IPV6, RT_TOS(tos),
@@ -819,6 +860,9 @@ static netdev_tx_t ipip6_tunnel_xmit(struct sk_buff *skb,
                         tunnel->err_count = 0;
         }
 
+        if (tunnel->net != dev_net(dev))
+                skb_scrub_packet(skb);
+
         /*
          * Okay, now see if we can stuff it in the buffer as-is.
          */
@@ -839,34 +883,14 @@ static netdev_tx_t ipip6_tunnel_xmit(struct sk_buff *skb,
                 skb = new_skb;
                 iph6 = ipv6_hdr(skb);
         }
-
-        skb->transport_header = skb->network_header;
-        skb_push(skb, sizeof(struct iphdr));
-        skb_reset_network_header(skb);
-        memset(&(IPCB(skb)->opt), 0, sizeof(IPCB(skb)->opt));
-        IPCB(skb)->flags = 0;
-        skb_dst_drop(skb);
-        skb_dst_set(skb, &rt->dst);
-
-        /*
-         *      Push down and install the IPIP header.
-         */
-
-        iph                     =       ip_hdr(skb);
-        iph->version            =       4;
-        iph->ihl                =       sizeof(struct iphdr)>>2;
-        iph->frag_off           =       df;
-        iph->protocol           =       IPPROTO_IPV6;
-        iph->tos                =       INET_ECN_encapsulate(tos, ipv6_get_dsfield(iph6));
-        iph->daddr              =       fl4.daddr;
-        iph->saddr              =       fl4.saddr;
-
-        if ((iph->ttl = tiph->ttl) == 0)
-                iph->ttl        =       iph6->hop_limit;
-
-        skb->ip_summed = CHECKSUM_NONE;
-        ip_select_ident(iph, skb_dst(skb), NULL);
-        iptunnel_xmit(skb, dev);
+        ttl = tiph->ttl;
+        if (ttl == 0)
+                ttl = iph6->hop_limit;
+        tos = INET_ECN_encapsulate(tos, ipv6_get_dsfield(iph6));
+
+        err = iptunnel_xmit(dev_net(dev), rt, skb, fl4.saddr, fl4.daddr,
+                            IPPROTO_IPV6, tos, ttl, df);
+        iptunnel_xmit_stats(err, &dev->stats, dev->tstats);
         return NETDEV_TX_OK;
 
 tx_error_icmp:
@@ -877,6 +901,43 @@ tx_error:
         return NETDEV_TX_OK;
 }
 
+static netdev_tx_t ipip_tunnel_xmit(struct sk_buff *skb, struct net_device *dev)
+{
+        struct ip_tunnel *tunnel = netdev_priv(dev);
+        const struct iphdr  *tiph = &tunnel->parms.iph;
+
+        if (likely(!skb->encapsulation)) {
+                skb_reset_inner_headers(skb);
+                skb->encapsulation = 1;
+        }
+
+        ip_tunnel_xmit(skb, dev, tiph, IPPROTO_IPIP);
+        return NETDEV_TX_OK;
+}
+
+static netdev_tx_t sit_tunnel_xmit(struct sk_buff *skb,
+                                   struct net_device *dev)
+{
+        switch (skb->protocol) {
+        case htons(ETH_P_IP):
+                ipip_tunnel_xmit(skb, dev);
+                break;
+        case htons(ETH_P_IPV6):
+                ipip6_tunnel_xmit(skb, dev);
+                break;
+        default:
+                goto tx_err;
+        }
+
+        return NETDEV_TX_OK;
+
+tx_err:
+        dev->stats.tx_errors++;
+        dev_kfree_skb(skb);
+        return NETDEV_TX_OK;
+
+}
+
 static void ipip6_tunnel_bind_dev(struct net_device *dev)
 {
         struct net_device *tdev = NULL;
@@ -888,7 +949,8 @@ static void ipip6_tunnel_bind_dev(struct net_device *dev)
         iph = &tunnel->parms.iph;
 
         if (iph->daddr) {
-                struct rtable *rt = ip_route_output_ports(dev_net(dev), &fl4, NULL,
+                struct rtable *rt = ip_route_output_ports(tunnel->net, &fl4,
+                                                          NULL,
                                                           iph->daddr, iph->saddr,
                                                           0, 0,
                                                           IPPROTO_IPV6,
@@ -903,7 +965,7 @@ static void ipip6_tunnel_bind_dev(struct net_device *dev)
         }
 
         if (!tdev && tunnel->parms.link)
-                tdev = __dev_get_by_index(dev_net(dev), tunnel->parms.link);
+                tdev = __dev_get_by_index(tunnel->net, tunnel->parms.link);
 
         if (tdev) {
                 dev->hard_header_len = tdev->hard_header_len + sizeof(struct iphdr);
@@ -916,7 +978,7 @@ static void ipip6_tunnel_bind_dev(struct net_device *dev)
 
 static void ipip6_tunnel_update(struct ip_tunnel *t, struct ip_tunnel_parm *p)
 {
-        struct net *net = dev_net(t->dev);
+        struct net *net = t->net;
         struct sit_net *sitn = net_generic(net, sit_net_id);
 
         ipip6_tunnel_unlink(sitn, t);
@@ -1027,7 +1089,11 @@ ipip6_tunnel_ioctl (struct net_device *dev, struct ifreq *ifr, int cmd)
                         goto done;
 
                 err = -EINVAL;
-                if (p.iph.version != 4 || p.iph.protocol != IPPROTO_IPV6 ||
+                if (p.iph.protocol != IPPROTO_IPV6 &&
+                    p.iph.protocol != IPPROTO_IPIP &&
+                    p.iph.protocol != 0)
+                        goto done;
+                if (p.iph.version != 4 ||
                     p.iph.ihl != 5 || (p.iph.frag_off&htons(~IP_DF)))
                         goto done;
                 if (p.iph.ttl)
@@ -1164,7 +1230,7 @@ static int ipip6_tunnel_change_mtu(struct net_device *dev, int new_mtu)
 
 static const struct net_device_ops ipip6_netdev_ops = {
         .ndo_uninit     = ipip6_tunnel_uninit,
-        .ndo_start_xmit = ipip6_tunnel_xmit,
+        .ndo_start_xmit = sit_tunnel_xmit,
         .ndo_do_ioctl   = ipip6_tunnel_ioctl,
         .ndo_change_mtu = ipip6_tunnel_change_mtu,
         .ndo_get_stats64 = ip_tunnel_get_stats64,
@@ -1188,7 +1254,6 @@ static void ipip6_tunnel_setup(struct net_device *dev)
         dev->priv_flags        &= ~IFF_XMIT_DST_RELEASE;
         dev->iflink             = 0;
         dev->addr_len           = 4;
-        dev->features           |= NETIF_F_NETNS_LOCAL;
         dev->features           |= NETIF_F_LLTX;
 }
 
@@ -1197,6 +1262,7 @@ static int ipip6_tunnel_init(struct net_device *dev)
         struct ip_tunnel *tunnel = netdev_priv(dev);
 
         tunnel->dev = dev;
+        tunnel->net = dev_net(dev);
 
         memcpy(dev->dev_addr, &tunnel->parms.iph.saddr, 4);
         memcpy(dev->broadcast, &tunnel->parms.iph.daddr, 4);
@@ -1217,6 +1283,7 @@ static int __net_init ipip6_fb_tunnel_init(struct net_device *dev)
         struct sit_net *sitn = net_generic(net, sit_net_id);
 
         tunnel->dev = dev;
+        tunnel->net = dev_net(dev);
         strcpy(tunnel->parms.name, dev->name);
 
         iph->version            = 4;
@@ -1232,6 +1299,22 @@ static int __net_init ipip6_fb_tunnel_init(struct net_device *dev)
         return 0;
 }
 
+static int ipip6_validate(struct nlattr *tb[], struct nlattr *data[])
+{
+        u8 proto;
+
+        if (!data || !data[IFLA_IPTUN_PROTO])
+                return 0;
+
+        proto = nla_get_u8(data[IFLA_IPTUN_PROTO]);
+        if (proto != IPPROTO_IPV6 &&
+            proto != IPPROTO_IPIP &&
+            proto != 0)
+                return -EINVAL;
+
+        return 0;
+}
+
 static void ipip6_netlink_parms(struct nlattr *data[],
                                 struct ip_tunnel_parm *parms)
 {
@@ -1268,6 +1351,10 @@ static void ipip6_netlink_parms(struct nlattr *data[],
 
         if (data[IFLA_IPTUN_FLAGS])
                 parms->i_flags = nla_get_be16(data[IFLA_IPTUN_FLAGS]);
+
+        if (data[IFLA_IPTUN_PROTO])
+                parms->iph.protocol = nla_get_u8(data[IFLA_IPTUN_PROTO]);
+
 }
 
 #ifdef CONFIG_IPV6_SIT_6RD
@@ -1339,9 +1426,9 @@ static int ipip6_newlink(struct net *src_net, struct net_device *dev,
 static int ipip6_changelink(struct net_device *dev, struct nlattr *tb[],
                           struct nlattr *data[])
 {
-        struct ip_tunnel *t;
+        struct ip_tunnel *t = netdev_priv(dev);
         struct ip_tunnel_parm p;
-        struct net *net = dev_net(dev);
+        struct net *net = t->net;
         struct sit_net *sitn = net_generic(net, sit_net_id);
 #ifdef CONFIG_IPV6_SIT_6RD
         struct ip_tunnel_6rd ip6rd;
@@ -1391,6 +1478,8 @@ static size_t ipip6_get_size(const struct net_device *dev)
                 nla_total_size(1) +
                 /* IFLA_IPTUN_FLAGS */
                 nla_total_size(2) +
+                /* IFLA_IPTUN_PROTO */
+                nla_total_size(1) +
 #ifdef CONFIG_IPV6_SIT_6RD
                 /* IFLA_IPTUN_6RD_PREFIX */
                 nla_total_size(sizeof(struct in6_addr)) +
@@ -1416,6 +1505,7 @@ static int ipip6_fill_info(struct sk_buff *skb, const struct net_device *dev)
             nla_put_u8(skb, IFLA_IPTUN_TOS, parm->iph.tos) ||
             nla_put_u8(skb, IFLA_IPTUN_PMTUDISC,
                        !!(parm->iph.frag_off & htons(IP_DF))) ||
+            nla_put_u8(skb, IFLA_IPTUN_PROTO, parm->iph.protocol) ||
             nla_put_be16(skb, IFLA_IPTUN_FLAGS, parm->i_flags))
                 goto nla_put_failure;
 
@@ -1445,6 +1535,7 @@ static const struct nla_policy ipip6_policy[IFLA_IPTUN_MAX + 1] = {
         [IFLA_IPTUN_TOS]                = { .type = NLA_U8 },
         [IFLA_IPTUN_PMTUDISC]           = { .type = NLA_U8 },
         [IFLA_IPTUN_FLAGS]              = { .type = NLA_U16 },
+        [IFLA_IPTUN_PROTO]              = { .type = NLA_U8 },
 #ifdef CONFIG_IPV6_SIT_6RD
         [IFLA_IPTUN_6RD_PREFIX]         = { .len = sizeof(struct in6_addr) },
         [IFLA_IPTUN_6RD_RELAY_PREFIX]   = { .type = NLA_U32 },
@@ -1459,6 +1550,7 @@ static struct rtnl_link_ops sit_link_ops __read_mostly = {
         .policy         = ipip6_policy,
         .priv_size      = sizeof(struct ip_tunnel),
         .setup          = ipip6_tunnel_setup,
+        .validate       = ipip6_validate,
         .newlink        = ipip6_newlink,
         .changelink     = ipip6_changelink,
         .get_size       = ipip6_get_size,
@@ -1471,10 +1563,22 @@ static struct xfrm_tunnel sit_handler __read_mostly = {
         .priority       =       1,
 };
 
+static struct xfrm_tunnel ipip_handler __read_mostly = {
+        .handler        =       ipip_rcv,
+        .err_handler    =       ipip6_err,
+        .priority       =       2,
+};
+
 static void __net_exit sit_destroy_tunnels(struct sit_net *sitn, struct list_head *head)
 {
+        struct net *net = dev_net(sitn->fb_tunnel_dev);
+        struct net_device *dev, *aux;
         int prio;
 
+        for_each_netdev_safe(net, dev, aux)
+                if (dev->rtnl_link_ops == &sit_link_ops)
+                        unregister_netdevice_queue(dev, head);
+
         for (prio = 1; prio < 4; prio++) {
                 int h;
                 for (h = 0; h < HASH_SIZE; h++) {
@@ -1482,7 +1586,12 @@ static void __net_exit sit_destroy_tunnels(struct sit_net *sitn, struct list_hea
 
                         t = rtnl_dereference(sitn->tunnels[prio][h]);
                         while (t != NULL) {
-                                unregister_netdevice_queue(t->dev, head);
+                                /* If dev is in the same netns, it has already
+                                 * been added to the list by the previous loop.
+                                 */
+                                if (dev_net(t->dev) != net)
+                                        unregister_netdevice_queue(t->dev,
+                                                                   head);
                                 t = rtnl_dereference(t->next);
                         }
                 }
@@ -1507,6 +1616,10 @@ static int __net_init sit_init_net(struct net *net)
                 goto err_alloc_dev;
         }
         dev_net_set(sitn->fb_tunnel_dev, net);
+        /* FB netdevice is special: we have one, and only one per netns.
+         * Allowing to move it to another netns is clearly unsafe.
+         */
+        sitn->fb_tunnel_dev->features |= NETIF_F_NETNS_LOCAL;
 
         err = ipip6_fb_tunnel_init(sitn->fb_tunnel_dev);
         if (err)
@@ -1553,6 +1666,7 @@ static void __exit sit_cleanup(void)
 {
         rtnl_link_unregister(&sit_link_ops);
         xfrm4_tunnel_deregister(&sit_handler, AF_INET6);
+        xfrm4_tunnel_deregister(&ipip_handler, AF_INET);
 
         unregister_pernet_device(&sit_net_ops);
         rcu_barrier(); /* Wait for completion of call_rcu()'s */
@@ -1569,9 +1683,14 @@ static int __init sit_init(void)
                 return err;
         err = xfrm4_tunnel_register(&sit_handler, AF_INET6);
         if (err < 0) {
-                pr_info("%s: can't add protocol\n", __func__);
+                pr_info("%s: can't register ip6ip4\n", __func__);
                 goto xfrm_tunnel_failed;
         }
+        err = xfrm4_tunnel_register(&ipip_handler, AF_INET);
+        if (err < 0) {
+                pr_info("%s: can't register ip4ip4\n", __func__);
+                goto xfrm_tunnel4_failed;
+        }
         err = rtnl_link_register(&sit_link_ops);
         if (err < 0)
                 goto rtnl_link_failed;
@@ -1580,6 +1699,8 @@ out:
         return err;
 
 rtnl_link_failed:
+        xfrm4_tunnel_deregister(&ipip_handler, AF_INET);
+xfrm_tunnel4_failed:
         xfrm4_tunnel_deregister(&sit_handler, AF_INET6);
 xfrm_tunnel_failed:
         unregister_pernet_device(&sit_net_ops);
diff --git a/net/ipv6/sysctl_net_ipv6.c b/net/ipv6/sysctl_net_ipv6.c
index e85c48bd404f..107b2f1d90ae 100644
--- a/net/ipv6/sysctl_net_ipv6.c
+++ b/net/ipv6/sysctl_net_ipv6.c
@@ -16,7 +16,7 @@
 #include <net/addrconf.h>
 #include <net/inet_frag.h>
 
-static ctl_table ipv6_table_template[] = {
+static struct ctl_table ipv6_table_template[] = {
         {
                 .procname       = "bindv6only",
                 .data           = &init_net.ipv6.sysctl.bindv6only,
@@ -27,7 +27,7 @@ static ctl_table ipv6_table_template[] = {
         { }
 };
 
-static ctl_table ipv6_rotable[] = {
+static struct ctl_table ipv6_rotable[] = {
         {
                 .procname       = "mld_max_msf",
                 .data           = &sysctl_mld_max_msf,
diff --git a/net/ipv6/tcp_ipv6.c b/net/ipv6/tcp_ipv6.c
index 0a17ed9eaf39..5cffa5c3e6b8 100644
--- a/net/ipv6/tcp_ipv6.c
+++ b/net/ipv6/tcp_ipv6.c
@@ -63,6 +63,7 @@
 #include <net/inet_common.h>
 #include <net/secure_seq.h>
 #include <net/tcp_memcontrol.h>
+#include <net/ll_poll.h>
 
 #include <asm/uaccess.h>
 
@@ -1498,6 +1499,7 @@ process:
         if (sk_filter(sk, skb))
                 goto discard_and_relse;
 
+        sk_mark_ll(sk, skb);
         skb->dev = NULL;
 
         bh_lock_sock_nested(sk);
diff --git a/net/ipv6/udp.c b/net/ipv6/udp.c
index 42923b14dfa6..b6f31437a1f8 100644
--- a/net/ipv6/udp.c
+++ b/net/ipv6/udp.c
@@ -46,6 +46,7 @@
 #include <net/ip6_checksum.h>
 #include <net/xfrm.h>
 #include <net/inet6_hashtables.h>
+#include <net/ll_poll.h>
 
 #include <linux/proc_fs.h>
 #include <linux/seq_file.h>
@@ -841,7 +842,10 @@ int __udp6_lib_rcv(struct sk_buff *skb, struct udp_table *udptable,
          */
         sk = __udp6_lib_lookup_skb(skb, uh->source, uh->dest, udptable);
         if (sk != NULL) {
-                int ret = udpv6_queue_rcv_skb(sk, skb);
+                int ret;
+
+                sk_mark_ll(sk, skb);
+                ret = udpv6_queue_rcv_skb(sk, skb);
                 sock_put(sk);
 
                 /* a return value > 0 means to resubmit the input, but
@@ -955,11 +959,16 @@ static int udp_v6_push_pending_frames(struct sock *sk)
         struct udphdr *uh;
         struct udp_sock  *up = udp_sk(sk);
         struct inet_sock *inet = inet_sk(sk);
-        struct flowi6 *fl6 = &inet->cork.fl.u.ip6;
+        struct flowi6 *fl6;
         int err = 0;
         int is_udplite = IS_UDPLITE(sk);
         __wsum csum = 0;
 
+        if (up->pending == AF_INET)
+                return udp_push_pending_frames(sk);
+
+        fl6 = &inet->cork.fl.u.ip6;
+
         /* Grab the skbuff where UDP header space exists. */
         if ((skb = skb_peek(&sk->sk_write_queue)) == NULL)
                 goto out;
@@ -1359,48 +1368,17 @@ static const struct inet6_protocol udpv6_protocol = {
 
 /* ------------------------------------------------------------------------ */
 #ifdef CONFIG_PROC_FS
-
-static void udp6_sock_seq_show(struct seq_file *seq, struct sock *sp, int bucket)
-{
-        struct inet_sock *inet = inet_sk(sp);
-        struct ipv6_pinfo *np = inet6_sk(sp);
-        const struct in6_addr *dest, *src;
-        __u16 destp, srcp;
-
-        dest  = &np->daddr;
-        src   = &np->rcv_saddr;
-        destp = ntohs(inet->inet_dport);
-        srcp  = ntohs(inet->inet_sport);
-        seq_printf(seq,
-                   "%5d: %08X%08X%08X%08X:%04X %08X%08X%08X%08X:%04X "
-                   "%02X %08X:%08X %02X:%08lX %08X %5d %8d %lu %d %pK %d\n",
-                   bucket,
-                   src->s6_addr32[0], src->s6_addr32[1],
-                   src->s6_addr32[2], src->s6_addr32[3], srcp,
-                   dest->s6_addr32[0], dest->s6_addr32[1],
-                   dest->s6_addr32[2], dest->s6_addr32[3], destp,
-                   sp->sk_state,
-                   sk_wmem_alloc_get(sp),
-                   sk_rmem_alloc_get(sp),
-                   0, 0L, 0,
-                   from_kuid_munged(seq_user_ns(seq), sock_i_uid(sp)),
-                   0,
-                   sock_i_ino(sp),
-                   atomic_read(&sp->sk_refcnt), sp,
-                   atomic_read(&sp->sk_drops));
-}
-
 int udp6_seq_show(struct seq_file *seq, void *v)
 {
-        if (v == SEQ_START_TOKEN)
-                seq_printf(seq,
-                           "  sl  "
-                           "local_address                         "
-                           "remote_address                        "
-                           "st tx_queue rx_queue tr tm->when retrnsmt"
-                           "   uid  timeout inode ref pointer drops\n");
-        else
-                udp6_sock_seq_show(seq, v, ((struct udp_iter_state *)seq->private)->bucket);
+        if (v == SEQ_START_TOKEN) {
+                seq_puts(seq, IPV6_SEQ_DGRAM_HEADER);
+        } else {
+                int bucket = ((struct udp_iter_state *)seq->private)->bucket;
+                struct inet_sock *inet = inet_sk(v);
+                __u16 srcp = ntohs(inet->inet_sport);
+                __u16 destp = ntohs(inet->inet_dport);
+                ip6_dgram_sock_seq_show(seq, v, srcp, destp, bucket);
+        }
         return 0;
 }
 
diff --git a/net/ipv6/udp_offload.c b/net/ipv6/udp_offload.c
index d3cfaf9c7a08..5d1b8d7ac993 100644
--- a/net/ipv6/udp_offload.c
+++ b/net/ipv6/udp_offload.c
@@ -64,7 +64,8 @@ static struct sk_buff *udp6_ufo_fragment(struct sk_buff *skb,
                 if (unlikely(type & ~(SKB_GSO_UDP |
                                       SKB_GSO_DODGY |
                                       SKB_GSO_UDP_TUNNEL |
-                                      SKB_GSO_GRE) ||
+                                      SKB_GSO_GRE |
+                                      SKB_GSO_MPLS) ||
                              !(type & (SKB_GSO_UDP))))
                         goto out;
 
diff --git a/net/ipx/af_ipx.c b/net/ipx/af_ipx.c
index f547a47d381c..7a1e0fc1bd4d 100644
--- a/net/ipx/af_ipx.c
+++ b/net/ipx/af_ipx.c
@@ -330,7 +330,7 @@ static __inline__ void __ipxitf_put(struct ipx_interface *intrfc)
 static int ipxitf_device_event(struct notifier_block *notifier,
                                 unsigned long event, void *ptr)
 {
-        struct net_device *dev = ptr;
+        struct net_device *dev = netdev_notifier_info_to_dev(ptr);
         struct ipx_interface *i, *tmp;
 
         if (!net_eq(dev_net(dev), &init_net))
diff --git a/net/irda/irsysctl.c b/net/irda/irsysctl.c
index de73f6496db5..d6a59651767a 100644
--- a/net/irda/irsysctl.c
+++ b/net/irda/irsysctl.c
@@ -73,7 +73,7 @@ static int min_lap_keepalive_time = 100;	/* 100us */
 /* For other sysctl, I've no idea of the range. Maybe Dag could help
  * us on that - Jean II */
 
-static int do_devname(ctl_table *table, int write,
+static int do_devname(struct ctl_table *table, int write,
                       void __user *buffer, size_t *lenp, loff_t *ppos)
 {
         int ret;
@@ -90,7 +90,7 @@ static int do_devname(ctl_table *table, int write,
 }
 
 
-static int do_discovery(ctl_table *table, int write,
+static int do_discovery(struct ctl_table *table, int write,
                     void __user *buffer, size_t *lenp, loff_t *ppos)
 {
        int ret;
@@ -111,7 +111,7 @@ static int do_discovery(ctl_table *table, int write,
 }
 
 /* One file */
-static ctl_table irda_table[] = {
+static struct ctl_table irda_table[] = {
         {
                 .procname       = "discovery",
                 .data           = &sysctl_discovery,
diff --git a/net/iucv/af_iucv.c b/net/iucv/af_iucv.c
index ae691651b721..168aff5e60de 100644
--- a/net/iucv/af_iucv.c
+++ b/net/iucv/af_iucv.c
@@ -2293,7 +2293,7 @@ out_unlock:
 static int afiucv_netdev_event(struct notifier_block *this,
                                unsigned long event, void *ptr)
 {
-        struct net_device *event_dev = (struct net_device *)ptr;
+        struct net_device *event_dev = netdev_notifier_info_to_dev(ptr);
         struct sock *sk;
         struct iucv_sock *iucv;
 
diff --git a/net/l2tp/l2tp_core.c b/net/l2tp/l2tp_core.c
index 6984c3a353cd..feae495a0a30 100644
--- a/net/l2tp/l2tp_core.c
+++ b/net/l2tp/l2tp_core.c
@@ -414,10 +414,7 @@ static void l2tp_recv_dequeue_skb(struct l2tp_session *session, struct sk_buff *
         if (L2TP_SKB_CB(skb)->has_seq) {
                 /* Bump our Nr */
                 session->nr++;
-                if (tunnel->version == L2TP_HDR_VER_2)
-                        session->nr &= 0xffff;
-                else
-                        session->nr &= 0xffffff;
+                session->nr &= session->nr_max;
 
                 l2tp_dbg(session, L2TP_MSG_SEQ, "%s: updated nr to %hu\n",
                          session->name, session->nr);
@@ -542,6 +539,84 @@ static inline int l2tp_verify_udp_checksum(struct sock *sk,
         return __skb_checksum_complete(skb);
 }
 
+static int l2tp_seq_check_rx_window(struct l2tp_session *session, u32 nr)
+{
+        u32 nws;
+
+        if (nr >= session->nr)
+                nws = nr - session->nr;
+        else
+                nws = (session->nr_max + 1) - (session->nr - nr);
+
+        return nws < session->nr_window_size;
+}
+
+/* If packet has sequence numbers, queue it if acceptable. Returns 0 if
+ * acceptable, else non-zero.
+ */
+static int l2tp_recv_data_seq(struct l2tp_session *session, struct sk_buff *skb)
+{
+        if (!l2tp_seq_check_rx_window(session, L2TP_SKB_CB(skb)->ns)) {
+                /* Packet sequence number is outside allowed window.
+                 * Discard it.
+                 */
+                l2tp_dbg(session, L2TP_MSG_SEQ,
+                         "%s: pkt %u len %d discarded, outside window, nr=%u\n",
+                         session->name, L2TP_SKB_CB(skb)->ns,
+                         L2TP_SKB_CB(skb)->length, session->nr);
+                goto discard;
+        }
+
+        if (session->reorder_timeout != 0) {
+                /* Packet reordering enabled. Add skb to session's
+                 * reorder queue, in order of ns.
+                 */
+                l2tp_recv_queue_skb(session, skb);
+                goto out;
+        }
+
+        /* Packet reordering disabled. Discard out-of-sequence packets, while
+         * tracking the number if in-sequence packets after the first OOS packet
+         * is seen. After nr_oos_count_max in-sequence packets, reset the
+         * sequence number to re-enable packet reception.
+         */
+        if (L2TP_SKB_CB(skb)->ns == session->nr) {
+                skb_queue_tail(&session->reorder_q, skb);
+        } else {
+                u32 nr_oos = L2TP_SKB_CB(skb)->ns;
+                u32 nr_next = (session->nr_oos + 1) & session->nr_max;
+
+                if (nr_oos == nr_next)
+                        session->nr_oos_count++;
+                else
+                        session->nr_oos_count = 0;
+
+                session->nr_oos = nr_oos;
+                if (session->nr_oos_count > session->nr_oos_count_max) {
+                        session->reorder_skip = 1;
+                        l2tp_dbg(session, L2TP_MSG_SEQ,
+                                 "%s: %d oos packets received. Resetting sequence numbers\n",
+                                 session->name, session->nr_oos_count);
+                }
+                if (!session->reorder_skip) {
+                        atomic_long_inc(&session->stats.rx_seq_discards);
+                        l2tp_dbg(session, L2TP_MSG_SEQ,
+                                 "%s: oos pkt %u len %d discarded, waiting for %u, reorder_q_len=%d\n",
+                                 session->name, L2TP_SKB_CB(skb)->ns,
+                                 L2TP_SKB_CB(skb)->length, session->nr,
+                                 skb_queue_len(&session->reorder_q));
+                        goto discard;
+                }
+                skb_queue_tail(&session->reorder_q, skb);
+        }
+
+out:
+        return 0;
+
+discard:
+        return 1;
+}
+
 /* Do receive processing of L2TP data frames. We handle both L2TPv2
  * and L2TPv3 data frames here.
  *
@@ -757,26 +832,8 @@ void l2tp_recv_common(struct l2tp_session *session, struct sk_buff *skb,
          * enabled. Saved L2TP protocol info is stored in skb->sb[].
          */
         if (L2TP_SKB_CB(skb)->has_seq) {
-                if (session->reorder_timeout != 0) {
-                        /* Packet reordering enabled. Add skb to session's
-                         * reorder queue, in order of ns.
-                         */
-                        l2tp_recv_queue_skb(session, skb);
-                } else {
-                        /* Packet reordering disabled. Discard out-of-sequence
-                         * packets
-                         */
-                        if (L2TP_SKB_CB(skb)->ns != session->nr) {
-                                atomic_long_inc(&session->stats.rx_seq_discards);
-                                l2tp_dbg(session, L2TP_MSG_SEQ,
-                                         "%s: oos pkt %u len %d discarded, waiting for %u, reorder_q_len=%d\n",
-                                         session->name, L2TP_SKB_CB(skb)->ns,
-                                         L2TP_SKB_CB(skb)->length, session->nr,
-                                         skb_queue_len(&session->reorder_q));
-                                goto discard;
-                        }
-                        skb_queue_tail(&session->reorder_q, skb);
-                }
+                if (l2tp_recv_data_seq(session, skb))
+                        goto discard;
         } else {
                 /* No sequence numbers. Add the skb to the tail of the
                  * reorder queue. This ensures that it will be
@@ -1812,6 +1869,15 @@ struct l2tp_session *l2tp_session_create(int priv_size, struct l2tp_tunnel *tunn
                 session->session_id = session_id;
                 session->peer_session_id = peer_session_id;
                 session->nr = 0;
+                if (tunnel->version == L2TP_HDR_VER_2)
+                        session->nr_max = 0xffff;
+                else
+                        session->nr_max = 0xffffff;
+                session->nr_window_size = session->nr_max / 2;
+                session->nr_oos_count_max = 4;
+
+                /* Use NR of first received packet */
+                session->reorder_skip = 1;
 
                 sprintf(&session->name[0], "sess %u/%u",
                         tunnel->tunnel_id, session->session_id);
diff --git a/net/l2tp/l2tp_core.h b/net/l2tp/l2tp_core.h
index 485a490fd990..66a559b104b6 100644
--- a/net/l2tp/l2tp_core.h
+++ b/net/l2tp/l2tp_core.h
@@ -102,6 +102,11 @@ struct l2tp_session {
         u32                     nr;             /* session NR state (receive) */
         u32                     ns;             /* session NR state (send) */
         struct sk_buff_head     reorder_q;      /* receive reorder queue */
+        u32                     nr_max;         /* max NR. Depends on tunnel */
+        u32                     nr_window_size; /* NR window size */
+        u32                     nr_oos;         /* NR of last OOS packet */
+        int                     nr_oos_count;   /* For OOS recovery */
+        int                     nr_oos_count_max;
         struct hlist_node       hlist;          /* Hash list node */
         atomic_t                ref_count;
 
diff --git a/net/l2tp/l2tp_ppp.c b/net/l2tp/l2tp_ppp.c
index 8dec6876dc50..5ebee2ded9e9 100644
--- a/net/l2tp/l2tp_ppp.c
+++ b/net/l2tp/l2tp_ppp.c
@@ -1793,7 +1793,8 @@ static const struct proto_ops pppol2tp_ops = {
 
 static const struct pppox_proto pppol2tp_proto = {
         .create         = pppol2tp_create,
-        .ioctl          = pppol2tp_ioctl
+        .ioctl          = pppol2tp_ioctl,
+        .owner          = THIS_MODULE,
 };
 
 #ifdef CONFIG_L2TP_V3
diff --git a/net/mac80211/aes_ccm.c b/net/mac80211/aes_ccm.c
index 0785e95c9924..be7614b9ed27 100644
--- a/net/mac80211/aes_ccm.c
+++ b/net/mac80211/aes_ccm.c
@@ -85,7 +85,7 @@ void ieee80211_aes_ccm_encrypt(struct crypto_cipher *tfm, u8 *scratch,
                         *cpos++ = *pos++ ^ e[i];
         }
 
-        for (i = 0; i < CCMP_MIC_LEN; i++)
+        for (i = 0; i < IEEE80211_CCMP_MIC_LEN; i++)
                 mic[i] = b[i] ^ s_0[i];
 }
 
@@ -123,7 +123,7 @@ int ieee80211_aes_ccm_decrypt(struct crypto_cipher *tfm, u8 *scratch,
                 crypto_cipher_encrypt_one(tfm, a, a);
         }
 
-        for (i = 0; i < CCMP_MIC_LEN; i++) {
+        for (i = 0; i < IEEE80211_CCMP_MIC_LEN; i++) {
                 if ((mic[i] ^ s_0[i]) != a[i])
                         return -1;
         }
@@ -138,7 +138,7 @@ struct crypto_cipher *ieee80211_aes_key_setup_encrypt(const u8 key[])
 
         tfm = crypto_alloc_cipher("aes", 0, CRYPTO_ALG_ASYNC);
         if (!IS_ERR(tfm))
-                crypto_cipher_setkey(tfm, key, ALG_CCMP_KEY_LEN);
+                crypto_cipher_setkey(tfm, key, WLAN_KEY_LEN_CCMP);
 
         return tfm;
 }
diff --git a/net/mac80211/cfg.c b/net/mac80211/cfg.c
index 4fdb306e42e0..8184d121ff09 100644
--- a/net/mac80211/cfg.c
+++ b/net/mac80211/cfg.c
@@ -73,16 +73,19 @@ static int ieee80211_change_iface(struct wiphy *wiphy,
                 struct ieee80211_local *local = sdata->local;
 
                 if (ieee80211_sdata_running(sdata)) {
+                        u32 mask = MONITOR_FLAG_COOK_FRAMES |
+                                   MONITOR_FLAG_ACTIVE;
+
                         /*
-                         * Prohibit MONITOR_FLAG_COOK_FRAMES to be
-                         * changed while the interface is up.
+                         * Prohibit MONITOR_FLAG_COOK_FRAMES and
+                         * MONITOR_FLAG_ACTIVE to be changed while the
+                         * interface is up.
                          * Else we would need to add a lot of cruft
                          * to update everything:
                          *      cooked_mntrs, monitor and all fif_* counters
                          *      reconfigure hardware
                          */
-                        if ((*flags & MONITOR_FLAG_COOK_FRAMES) !=
-                            (sdata->u.mntr_flags & MONITOR_FLAG_COOK_FRAMES))
+                        if ((*flags & mask) != (sdata->u.mntr_flags & mask))
                                 return -EBUSY;
 
                         ieee80211_adjust_monitor_flags(sdata, -1);
@@ -444,7 +447,7 @@ static void sta_set_sinfo(struct sta_info *sta, struct station_info *sinfo)
         struct ieee80211_local *local = sdata->local;
         struct timespec uptime;
         u64 packets = 0;
-        int ac;
+        int i, ac;
 
         sinfo->generation = sdata->local->sta_generation;
 
@@ -488,6 +491,17 @@ static void sta_set_sinfo(struct sta_info *sta, struct station_info *sinfo)
                         sinfo->signal = (s8)sta->last_signal;
                 sinfo->signal_avg = (s8) -ewma_read(&sta->avg_signal);
         }
+        if (sta->chains) {
+                sinfo->filled |= STATION_INFO_CHAIN_SIGNAL |
+                                 STATION_INFO_CHAIN_SIGNAL_AVG;
+
+                sinfo->chains = sta->chains;
+                for (i = 0; i < ARRAY_SIZE(sinfo->chain_signal); i++) {
+                        sinfo->chain_signal[i] = sta->chain_signal_last[i];
+                        sinfo->chain_signal_avg[i] =
+                                (s8) -ewma_read(&sta->chain_signal_avg[i]);
+                }
+        }
 
         sta_set_rate_info_tx(sta, &sta->last_tx_rate, &sinfo->txrate);
         sta_set_rate_info_rx(sta, &sinfo->rxrate);
@@ -728,7 +742,7 @@ static void ieee80211_get_et_strings(struct wiphy *wiphy,
 
         if (sset == ETH_SS_STATS) {
                 sz_sta_stats = sizeof(ieee80211_gstrings_sta_stats);
-                memcpy(data, *ieee80211_gstrings_sta_stats, sz_sta_stats);
+                memcpy(data, ieee80211_gstrings_sta_stats, sz_sta_stats);
         }
         drv_get_et_strings(sdata, sset, &(data[sz_sta_stats]));
 }
@@ -1741,6 +1755,7 @@ static int copy_mesh_setup(struct ieee80211_if_mesh *ifmsh,
         ifmsh->mesh_pp_id = setup->path_sel_proto;
         ifmsh->mesh_pm_id = setup->path_metric;
         ifmsh->user_mpm = setup->user_mpm;
+        ifmsh->mesh_auth_id = setup->auth_id;
         ifmsh->security = IEEE80211_MESH_SEC_NONE;
         if (setup->is_authenticated)
                 ifmsh->security |= IEEE80211_MESH_SEC_AUTHED;
@@ -1750,6 +1765,7 @@ static int copy_mesh_setup(struct ieee80211_if_mesh *ifmsh,
         /* mcast rate setting in Mesh Node */
         memcpy(sdata->vif.bss_conf.mcast_rate, setup->mcast_rate,
                                                 sizeof(setup->mcast_rate));
+        sdata->vif.bss_conf.basic_rates = setup->basic_rates;
 
         sdata->vif.bss_conf.beacon_int = setup->beacon_interval;
         sdata->vif.bss_conf.dtim_period = setup->dtim_period;
@@ -1862,6 +1878,8 @@ static int ieee80211_update_mesh_config(struct wiphy *wiphy,
         if (_chg_mesh_attr(NL80211_MESHCONF_AWAKE_WINDOW, mask))
                 conf->dot11MeshAwakeWindowDuration =
                         nconf->dot11MeshAwakeWindowDuration;
+        if (_chg_mesh_attr(NL80211_MESHCONF_PLINK_TIMEOUT, mask))
+                conf->plink_timeout = nconf->plink_timeout;
         ieee80211_mbss_info_change_notify(sdata, BSS_CHANGED_BEACON);
         return 0;
 }
@@ -2312,7 +2330,7 @@ int __ieee80211_request_smps(struct ieee80211_sub_if_data *sdata,
         enum ieee80211_smps_mode old_req;
         int err;
 
-        lockdep_assert_held(&sdata->u.mgd.mtx);
+        lockdep_assert_held(&sdata->wdev.mtx);
 
         old_req = sdata->u.mgd.req_smps;
         sdata->u.mgd.req_smps = smps_mode;
@@ -2369,9 +2387,9 @@ static int ieee80211_set_power_mgmt(struct wiphy *wiphy, struct net_device *dev,
         local->dynamic_ps_forced_timeout = timeout;
 
         /* no change, but if automatic follow powersave */
-        mutex_lock(&sdata->u.mgd.mtx);
+        sdata_lock(sdata);
         __ieee80211_request_smps(sdata, sdata->u.mgd.req_smps);
-        mutex_unlock(&sdata->u.mgd.mtx);
+        sdata_unlock(sdata);
 
         if (local->hw.flags & IEEE80211_HW_SUPPORTS_DYNAMIC_PS)
                 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS);
@@ -2809,7 +2827,8 @@ static int ieee80211_mgmt_tx(struct wiphy *wiphy, struct wireless_dev *wdev,
                     !rcu_access_pointer(sdata->bss->beacon))
                         need_offchan = true;
                 if (!ieee80211_is_action(mgmt->frame_control) ||
-                    mgmt->u.action.category == WLAN_CATEGORY_PUBLIC)
+                    mgmt->u.action.category == WLAN_CATEGORY_PUBLIC ||
+                    mgmt->u.action.category == WLAN_CATEGORY_SELF_PROTECTED)
                         break;
                 rcu_read_lock();
                 sta = sta_info_get(sdata, mgmt->da);
@@ -2829,6 +2848,12 @@ static int ieee80211_mgmt_tx(struct wiphy *wiphy, struct wireless_dev *wdev,
                 return -EOPNOTSUPP;
         }
 
+        /* configurations requiring offchan cannot work if no channel has been
+         * specified
+         */
+        if (need_offchan && !chan)
+                return -EINVAL;
+
         mutex_lock(&local->mtx);
 
         /* Check if the operating channel is the requested channel */
@@ -2838,10 +2863,15 @@ static int ieee80211_mgmt_tx(struct wiphy *wiphy, struct wireless_dev *wdev,
                 rcu_read_lock();
                 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
 
-                if (chanctx_conf)
-                        need_offchan = chan != chanctx_conf->def.chan;
-                else
+                if (chanctx_conf) {
+                        need_offchan = chan && (chan != chanctx_conf->def.chan);
+                } else if (!chan) {
+                        ret = -EINVAL;
+                        rcu_read_unlock();
+                        goto out_unlock;
+                } else {
                         need_offchan = true;
+                }
                 rcu_read_unlock();
         }
 
@@ -2901,19 +2931,8 @@ static void ieee80211_mgmt_frame_register(struct wiphy *wiphy,
                                           u16 frame_type, bool reg)
 {
         struct ieee80211_local *local = wiphy_priv(wiphy);
-        struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
 
         switch (frame_type) {
-        case IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_AUTH:
-                if (sdata->vif.type == NL80211_IFTYPE_ADHOC) {
-                        struct ieee80211_if_ibss *ifibss = &sdata->u.ibss;
-
-                        if (reg)
-                                ifibss->auth_frame_registrations++;
-                        else
-                                ifibss->auth_frame_registrations--;
-                }
-                break;
         case IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_PROBE_REQ:
                 if (reg)
                         local->probe_req_reg++;
diff --git a/net/mac80211/debugfs_netdev.c b/net/mac80211/debugfs_netdev.c
index 14abcf44f974..cafe614ef93d 100644
--- a/net/mac80211/debugfs_netdev.c
+++ b/net/mac80211/debugfs_netdev.c
@@ -228,9 +228,9 @@ static int ieee80211_set_smps(struct ieee80211_sub_if_data *sdata,
         if (sdata->vif.type != NL80211_IFTYPE_STATION)
                 return -EOPNOTSUPP;
 
-        mutex_lock(&sdata->u.mgd.mtx);
+        sdata_lock(sdata);
         err = __ieee80211_request_smps(sdata, smps_mode);
-        mutex_unlock(&sdata->u.mgd.mtx);
+        sdata_unlock(sdata);
 
         return err;
 }
@@ -313,16 +313,16 @@ static ssize_t ieee80211_if_parse_tkip_mic_test(
         case NL80211_IFTYPE_STATION:
                 fc |= cpu_to_le16(IEEE80211_FCTL_TODS);
                 /* BSSID SA DA */
-                mutex_lock(&sdata->u.mgd.mtx);
+                sdata_lock(sdata);
                 if (!sdata->u.mgd.associated) {
-                        mutex_unlock(&sdata->u.mgd.mtx);
+                        sdata_unlock(sdata);
                         dev_kfree_skb(skb);
                         return -ENOTCONN;
                 }
                 memcpy(hdr->addr1, sdata->u.mgd.associated->bssid, ETH_ALEN);
                 memcpy(hdr->addr2, sdata->vif.addr, ETH_ALEN);
                 memcpy(hdr->addr3, addr, ETH_ALEN);
-                mutex_unlock(&sdata->u.mgd.mtx);
+                sdata_unlock(sdata);
                 break;
         default:
                 dev_kfree_skb(skb);
@@ -471,6 +471,8 @@ __IEEE80211_IF_FILE_W(tsf);
 IEEE80211_IF_FILE(peer, u.wds.remote_addr, MAC);
 
 #ifdef CONFIG_MAC80211_MESH
+IEEE80211_IF_FILE(estab_plinks, u.mesh.estab_plinks, ATOMIC);
+
 /* Mesh stats attributes */
 IEEE80211_IF_FILE(fwded_mcast, u.mesh.mshstats.fwded_mcast, DEC);
 IEEE80211_IF_FILE(fwded_unicast, u.mesh.mshstats.fwded_unicast, DEC);
@@ -480,7 +482,6 @@ 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.estab_plinks, ATOMIC);
 
 /* Mesh parameters */
 IEEE80211_IF_FILE(dot11MeshMaxRetries,
@@ -583,6 +584,7 @@ static void add_wds_files(struct ieee80211_sub_if_data *sdata)
 static void add_mesh_files(struct ieee80211_sub_if_data *sdata)
 {
         DEBUGFS_ADD_MODE(tsf, 0600);
+        DEBUGFS_ADD_MODE(estab_plinks, 0400);
 }
 
 static void add_mesh_stats(struct ieee80211_sub_if_data *sdata)
@@ -598,7 +600,6 @@ static void add_mesh_stats(struct ieee80211_sub_if_data *sdata)
         MESHSTATS_ADD(dropped_frames_ttl);
         MESHSTATS_ADD(dropped_frames_no_route);
         MESHSTATS_ADD(dropped_frames_congestion);
-        MESHSTATS_ADD(estab_plinks);
 #undef MESHSTATS_ADD
 }
 
diff --git a/net/mac80211/driver-ops.h b/net/mac80211/driver-ops.h
index 169664c122e2..b931c96a596f 100644
--- a/net/mac80211/driver-ops.h
+++ b/net/mac80211/driver-ops.h
@@ -146,7 +146,8 @@ static inline int drv_add_interface(struct ieee80211_local *local,
 
         if (WARN_ON(sdata->vif.type == NL80211_IFTYPE_AP_VLAN ||
                     (sdata->vif.type == NL80211_IFTYPE_MONITOR &&
-                     !(local->hw.flags & IEEE80211_HW_WANT_MONITOR_VIF))))
+                     !(local->hw.flags & IEEE80211_HW_WANT_MONITOR_VIF) &&
+                     !(sdata->u.mntr_flags & MONITOR_FLAG_ACTIVE))))
                 return -EINVAL;
 
         trace_drv_add_interface(local, sdata);
diff --git a/net/mac80211/ht.c b/net/mac80211/ht.c
index af8cee06e4f3..f83534f6a2ee 100644
--- a/net/mac80211/ht.c
+++ b/net/mac80211/ht.c
@@ -281,13 +281,14 @@ void ieee80211_ba_session_work(struct work_struct *work)
                                 sta, tid, WLAN_BACK_RECIPIENT,
                                 WLAN_REASON_UNSPECIFIED, true);
 
+                spin_lock_bh(&sta->lock);
+
                 tid_tx = sta->ampdu_mlme.tid_start_tx[tid];
                 if (tid_tx) {
                         /*
                          * Assign it over to the normal tid_tx array
                          * where it "goes live".
                          */
-                        spin_lock_bh(&sta->lock);
 
                         sta->ampdu_mlme.tid_start_tx[tid] = NULL;
                         /* could there be a race? */
@@ -300,6 +301,7 @@ void ieee80211_ba_session_work(struct work_struct *work)
                         ieee80211_tx_ba_session_handle_start(sta, tid);
                         continue;
                 }
+                spin_unlock_bh(&sta->lock);
 
                 tid_tx = rcu_dereference_protected_tid_tx(sta, tid);
                 if (tid_tx && test_and_clear_bit(HT_AGG_STATE_WANT_STOP,
@@ -429,9 +431,9 @@ void ieee80211_request_smps_work(struct work_struct *work)
                 container_of(work, struct ieee80211_sub_if_data,
                              u.mgd.request_smps_work);
 
-        mutex_lock(&sdata->u.mgd.mtx);
+        sdata_lock(sdata);
         __ieee80211_request_smps(sdata, sdata->u.mgd.driver_smps_mode);
-        mutex_unlock(&sdata->u.mgd.mtx);
+        sdata_unlock(sdata);
 }
 
 void ieee80211_request_smps(struct ieee80211_vif *vif,
diff --git a/net/mac80211/ibss.c b/net/mac80211/ibss.c
index 170f9a7fa319..ea7b9c2c7e66 100644
--- a/net/mac80211/ibss.c
+++ b/net/mac80211/ibss.c
@@ -54,7 +54,7 @@ static void __ieee80211_sta_join_ibss(struct ieee80211_sub_if_data *sdata,
         struct beacon_data *presp;
         int frame_len;
 
-        lockdep_assert_held(&ifibss->mtx);
+        sdata_assert_lock(sdata);
 
         /* Reset own TSF to allow time synchronization work. */
         drv_reset_tsf(local, sdata);
@@ -74,14 +74,14 @@ static void __ieee80211_sta_join_ibss(struct ieee80211_sub_if_data *sdata,
         }
 
         presp = rcu_dereference_protected(ifibss->presp,
-                                          lockdep_is_held(&ifibss->mtx));
+                                          lockdep_is_held(&sdata->wdev.mtx));
         rcu_assign_pointer(ifibss->presp, NULL);
         if (presp)
                 kfree_rcu(presp, rcu_head);
 
         sdata->drop_unencrypted = capability & WLAN_CAPABILITY_PRIVACY ? 1 : 0;
 
-        cfg80211_chandef_create(&chandef, chan, ifibss->channel_type);
+        chandef = ifibss->chandef;
         if (!cfg80211_reg_can_beacon(local->hw.wiphy, &chandef)) {
                 chandef.width = NL80211_CHAN_WIDTH_20;
                 chandef.center_freq1 = chan->center_freq;
@@ -176,6 +176,8 @@ static void __ieee80211_sta_join_ibss(struct ieee80211_sub_if_data *sdata,
 
         /* add HT capability and information IEs */
         if (chandef.width != NL80211_CHAN_WIDTH_20_NOHT &&
+            chandef.width != NL80211_CHAN_WIDTH_5 &&
+            chandef.width != NL80211_CHAN_WIDTH_10 &&
             sband->ht_cap.ht_supported) {
                 pos = ieee80211_ie_build_ht_cap(pos, &sband->ht_cap,
                                                 sband->ht_cap.cap);
@@ -263,7 +265,7 @@ static void ieee80211_sta_join_ibss(struct ieee80211_sub_if_data *sdata,
         const struct cfg80211_bss_ies *ies;
         u64 tsf;
 
-        lockdep_assert_held(&sdata->u.ibss.mtx);
+        sdata_assert_lock(sdata);
 
         if (beacon_int < 10)
                 beacon_int = 10;
@@ -298,8 +300,7 @@ static void ieee80211_sta_join_ibss(struct ieee80211_sub_if_data *sdata,
                                   tsf, false);
 }
 
-static struct sta_info *ieee80211_ibss_finish_sta(struct sta_info *sta,
-                                                  bool auth)
+static struct sta_info *ieee80211_ibss_finish_sta(struct sta_info *sta)
         __acquires(RCU)
 {
         struct ieee80211_sub_if_data *sdata = sta->sdata;
@@ -321,26 +322,19 @@ static struct sta_info *ieee80211_ibss_finish_sta(struct sta_info *sta,
         /* If it fails, maybe we raced another insertion? */
         if (sta_info_insert_rcu(sta))
                 return sta_info_get(sdata, addr);
-        if (auth && !sdata->u.ibss.auth_frame_registrations) {
-                ibss_dbg(sdata,
-                         "TX Auth SA=%pM DA=%pM BSSID=%pM (auth_transaction=1)\n",
-                         sdata->vif.addr, addr, sdata->u.ibss.bssid);
-                ieee80211_send_auth(sdata, 1, WLAN_AUTH_OPEN, 0, NULL, 0,
-                                    addr, sdata->u.ibss.bssid, NULL, 0, 0, 0);
-        }
         return sta;
 }
 
 static struct sta_info *
-ieee80211_ibss_add_sta(struct ieee80211_sub_if_data *sdata,
-                       const u8 *bssid, const u8 *addr,
-                       u32 supp_rates, bool auth)
+ieee80211_ibss_add_sta(struct ieee80211_sub_if_data *sdata, const u8 *bssid,
+                       const u8 *addr, u32 supp_rates)
         __acquires(RCU)
 {
         struct ieee80211_if_ibss *ifibss = &sdata->u.ibss;
         struct ieee80211_local *local = sdata->local;
         struct sta_info *sta;
         struct ieee80211_chanctx_conf *chanctx_conf;
+        struct ieee80211_supported_band *sband;
         int band;
 
         /*
@@ -380,10 +374,11 @@ ieee80211_ibss_add_sta(struct ieee80211_sub_if_data *sdata,
         sta->last_rx = jiffies;
 
         /* make sure mandatory rates are always added */
+        sband = local->hw.wiphy->bands[band];
         sta->sta.supp_rates[band] = supp_rates |
-                        ieee80211_mandatory_rates(local, band);
+                        ieee80211_mandatory_rates(sband);
 
-        return ieee80211_ibss_finish_sta(sta, auth);
+        return ieee80211_ibss_finish_sta(sta);
 }
 
 static void ieee80211_rx_mgmt_deauth_ibss(struct ieee80211_sub_if_data *sdata,
@@ -405,10 +400,8 @@ static void ieee80211_rx_mgmt_auth_ibss(struct ieee80211_sub_if_data *sdata,
                                         size_t len)
 {
         u16 auth_alg, auth_transaction;
-        struct sta_info *sta;
-        u8 deauth_frame_buf[IEEE80211_DEAUTH_FRAME_LEN];
 
-        lockdep_assert_held(&sdata->u.ibss.mtx);
+        sdata_assert_lock(sdata);
 
         if (len < 24 + 6)
                 return;
@@ -423,22 +416,6 @@ static void ieee80211_rx_mgmt_auth_ibss(struct ieee80211_sub_if_data *sdata,
         if (auth_alg != WLAN_AUTH_OPEN || auth_transaction != 1)
                 return;
 
-        sta_info_destroy_addr(sdata, mgmt->sa);
-        sta = ieee80211_ibss_add_sta(sdata, mgmt->bssid, mgmt->sa, 0, false);
-        rcu_read_unlock();
-
-        /*
-         * if we have any problem in allocating the new station, we reply with a
-         * DEAUTH frame to tell the other end that we had a problem
-         */
-        if (!sta) {
-                ieee80211_send_deauth_disassoc(sdata, sdata->u.ibss.bssid,
-                                               IEEE80211_STYPE_DEAUTH,
-                                               WLAN_REASON_UNSPECIFIED, true,
-                                               deauth_frame_buf);
-                return;
-        }
-
         /*
          * IEEE 802.11 standard does not require authentication in IBSS
          * networks and most implementations do not seem to use it.
@@ -492,7 +469,7 @@ static void ieee80211_rx_bss_info(struct ieee80211_sub_if_data *sdata,
                                 prev_rates = sta->sta.supp_rates[band];
                                 /* make sure mandatory rates are always added */
                                 sta->sta.supp_rates[band] = supp_rates |
-                                        ieee80211_mandatory_rates(local, band);
+                                        ieee80211_mandatory_rates(sband);
 
                                 if (sta->sta.supp_rates[band] != prev_rates) {
                                         ibss_dbg(sdata,
@@ -504,7 +481,7 @@ static void ieee80211_rx_bss_info(struct ieee80211_sub_if_data *sdata,
                         } else {
                                 rcu_read_unlock();
                                 sta = ieee80211_ibss_add_sta(sdata, mgmt->bssid,
-                                                mgmt->sa, supp_rates, true);
+                                                mgmt->sa, supp_rates);
                         }
                 }
 
@@ -512,7 +489,9 @@ static void ieee80211_rx_bss_info(struct ieee80211_sub_if_data *sdata,
                         set_sta_flag(sta, WLAN_STA_WME);
 
                 if (sta && elems->ht_operation && elems->ht_cap_elem &&
-                    sdata->u.ibss.channel_type != NL80211_CHAN_NO_HT) {
+                    sdata->u.ibss.chandef.width != NL80211_CHAN_WIDTH_20_NOHT &&
+                    sdata->u.ibss.chandef.width != NL80211_CHAN_WIDTH_5 &&
+                    sdata->u.ibss.chandef.width != NL80211_CHAN_WIDTH_10) {
                         /* we both use HT */
                         struct ieee80211_ht_cap htcap_ie;
                         struct cfg80211_chan_def chandef;
@@ -527,8 +506,8 @@ static void ieee80211_rx_bss_info(struct ieee80211_sub_if_data *sdata,
                          * fall back to HT20 if we don't use or use
                          * the other extension channel
                          */
-                        if (cfg80211_get_chandef_type(&chandef) !=
-                                                sdata->u.ibss.channel_type)
+                        if (chandef.center_freq1 !=
+                            sdata->u.ibss.chandef.center_freq1)
                                 htcap_ie.cap_info &=
                                         cpu_to_le16(~IEEE80211_HT_CAP_SUP_WIDTH_20_40);
 
@@ -567,7 +546,7 @@ static void ieee80211_rx_bss_info(struct ieee80211_sub_if_data *sdata,
 
         /* different channel */
         if (sdata->u.ibss.fixed_channel &&
-            sdata->u.ibss.channel != cbss->channel)
+            sdata->u.ibss.chandef.chan != cbss->channel)
                 goto put_bss;
 
         /* different SSID */
@@ -608,7 +587,7 @@ static void ieee80211_rx_bss_info(struct ieee80211_sub_if_data *sdata,
                 ieee80211_sta_join_ibss(sdata, bss);
                 supp_rates = ieee80211_sta_get_rates(local, elems, band, NULL);
                 ieee80211_ibss_add_sta(sdata, mgmt->bssid, mgmt->sa,
-                                       supp_rates, true);
+                                       supp_rates);
                 rcu_read_unlock();
         }
 
@@ -624,6 +603,7 @@ void ieee80211_ibss_rx_no_sta(struct ieee80211_sub_if_data *sdata,
         struct ieee80211_local *local = sdata->local;
         struct sta_info *sta;
         struct ieee80211_chanctx_conf *chanctx_conf;
+        struct ieee80211_supported_band *sband;
         int band;
 
         /*
@@ -658,8 +638,9 @@ void ieee80211_ibss_rx_no_sta(struct ieee80211_sub_if_data *sdata,
         sta->last_rx = jiffies;
 
         /* make sure mandatory rates are always added */
+        sband = local->hw.wiphy->bands[band];
         sta->sta.supp_rates[band] = supp_rates |
-                        ieee80211_mandatory_rates(local, band);
+                        ieee80211_mandatory_rates(sband);
 
         spin_lock(&ifibss->incomplete_lock);
         list_add(&sta->list, &ifibss->incomplete_stations);
@@ -673,7 +654,7 @@ static int ieee80211_sta_active_ibss(struct ieee80211_sub_if_data *sdata)
         int active = 0;
         struct sta_info *sta;
 
-        lockdep_assert_held(&sdata->u.ibss.mtx);
+        sdata_assert_lock(sdata);
 
         rcu_read_lock();
 
@@ -699,7 +680,7 @@ static void ieee80211_sta_merge_ibss(struct ieee80211_sub_if_data *sdata)
 {
         struct ieee80211_if_ibss *ifibss = &sdata->u.ibss;
 
-        lockdep_assert_held(&ifibss->mtx);
+        sdata_assert_lock(sdata);
 
         mod_timer(&ifibss->timer,
                   round_jiffies(jiffies + IEEE80211_IBSS_MERGE_INTERVAL));
@@ -730,7 +711,7 @@ static void ieee80211_sta_create_ibss(struct ieee80211_sub_if_data *sdata)
         u16 capability;
         int i;
 
-        lockdep_assert_held(&ifibss->mtx);
+        sdata_assert_lock(sdata);
 
         if (ifibss->fixed_bssid) {
                 memcpy(bssid, ifibss->bssid, ETH_ALEN);
@@ -755,7 +736,7 @@ static void ieee80211_sta_create_ibss(struct ieee80211_sub_if_data *sdata)
                 sdata->drop_unencrypted = 0;
 
         __ieee80211_sta_join_ibss(sdata, bssid, sdata->vif.bss_conf.beacon_int,
-                                  ifibss->channel, ifibss->basic_rates,
+                                  ifibss->chandef.chan, ifibss->basic_rates,
                                   capability, 0, true);
 }
 
@@ -773,7 +754,7 @@ static void ieee80211_sta_find_ibss(struct ieee80211_sub_if_data *sdata)
         int active_ibss;
         u16 capability;
 
-        lockdep_assert_held(&ifibss->mtx);
+        sdata_assert_lock(sdata);
 
         active_ibss = ieee80211_sta_active_ibss(sdata);
         ibss_dbg(sdata, "sta_find_ibss (active_ibss=%d)\n", active_ibss);
@@ -787,7 +768,7 @@ static void ieee80211_sta_find_ibss(struct ieee80211_sub_if_data *sdata)
         if (ifibss->fixed_bssid)
                 bssid = ifibss->bssid;
         if (ifibss->fixed_channel)
-                chan = ifibss->channel;
+                chan = ifibss->chandef.chan;
         if (!is_zero_ether_addr(ifibss->bssid))
                 bssid = ifibss->bssid;
         cbss = cfg80211_get_bss(local->hw.wiphy, chan, bssid,
@@ -843,10 +824,10 @@ static void ieee80211_rx_mgmt_probe_req(struct ieee80211_sub_if_data *sdata,
         struct beacon_data *presp;
         u8 *pos, *end;
 
-        lockdep_assert_held(&ifibss->mtx);
+        sdata_assert_lock(sdata);
 
         presp = rcu_dereference_protected(ifibss->presp,
-                                          lockdep_is_held(&ifibss->mtx));
+                                          lockdep_is_held(&sdata->wdev.mtx));
 
         if (ifibss->state != IEEE80211_IBSS_MLME_JOINED ||
             len < 24 + 2 || !presp)
@@ -930,7 +911,7 @@ void ieee80211_ibss_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata,
         mgmt = (struct ieee80211_mgmt *) skb->data;
         fc = le16_to_cpu(mgmt->frame_control);
 
-        mutex_lock(&sdata->u.ibss.mtx);
+        sdata_lock(sdata);
 
         if (!sdata->u.ibss.ssid_len)
                 goto mgmt_out; /* not ready to merge yet */
@@ -953,7 +934,7 @@ void ieee80211_ibss_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata,
         }
 
  mgmt_out:
-        mutex_unlock(&sdata->u.ibss.mtx);
+        sdata_unlock(sdata);
 }
 
 void ieee80211_ibss_work(struct ieee80211_sub_if_data *sdata)
@@ -961,7 +942,7 @@ void ieee80211_ibss_work(struct ieee80211_sub_if_data *sdata)
         struct ieee80211_if_ibss *ifibss = &sdata->u.ibss;
         struct sta_info *sta;
 
-        mutex_lock(&ifibss->mtx);
+        sdata_lock(sdata);
 
         /*
          * Work could be scheduled after scan or similar
@@ -978,7 +959,7 @@ void ieee80211_ibss_work(struct ieee80211_sub_if_data *sdata)
                 list_del(&sta->list);
                 spin_unlock_bh(&ifibss->incomplete_lock);
 
-                ieee80211_ibss_finish_sta(sta, true);
+                ieee80211_ibss_finish_sta(sta);
                 rcu_read_unlock();
                 spin_lock_bh(&ifibss->incomplete_lock);
         }
@@ -997,7 +978,7 @@ void ieee80211_ibss_work(struct ieee80211_sub_if_data *sdata)
         }
 
  out:
-        mutex_unlock(&ifibss->mtx);
+        sdata_unlock(sdata);
 }
 
 static void ieee80211_ibss_timer(unsigned long data)
@@ -1014,7 +995,6 @@ void ieee80211_ibss_setup_sdata(struct ieee80211_sub_if_data *sdata)
 
         setup_timer(&ifibss->timer, ieee80211_ibss_timer,
                     (unsigned long) sdata);
-        mutex_init(&ifibss->mtx);
         INIT_LIST_HEAD(&ifibss->incomplete_stations);
         spin_lock_init(&ifibss->incomplete_lock);
 }
@@ -1041,8 +1021,6 @@ int ieee80211_ibss_join(struct ieee80211_sub_if_data *sdata,
 {
         u32 changed = 0;
 
-        mutex_lock(&sdata->u.ibss.mtx);
-
         if (params->bssid) {
                 memcpy(sdata->u.ibss.bssid, params->bssid, ETH_ALEN);
                 sdata->u.ibss.fixed_bssid = true;
@@ -1057,9 +1035,7 @@ int ieee80211_ibss_join(struct ieee80211_sub_if_data *sdata,
 
         sdata->vif.bss_conf.beacon_int = params->beacon_interval;
 
-        sdata->u.ibss.channel = params->chandef.chan;
-        sdata->u.ibss.channel_type =
-                cfg80211_get_chandef_type(&params->chandef);
+        sdata->u.ibss.chandef = params->chandef;
         sdata->u.ibss.fixed_channel = params->channel_fixed;
 
         if (params->ie) {
@@ -1075,8 +1051,6 @@ int ieee80211_ibss_join(struct ieee80211_sub_if_data *sdata,
         memcpy(sdata->u.ibss.ssid, params->ssid, params->ssid_len);
         sdata->u.ibss.ssid_len = params->ssid_len;
 
-        mutex_unlock(&sdata->u.ibss.mtx);
-
         /*
          * 802.11n-2009 9.13.3.1: In an IBSS, the HT Protection field is
          * reserved, but an HT STA shall protect HT transmissions as though
@@ -1112,8 +1086,6 @@ int ieee80211_ibss_leave(struct ieee80211_sub_if_data *sdata)
         struct sta_info *sta;
         struct beacon_data *presp;
 
-        mutex_lock(&sdata->u.ibss.mtx);
-
         active_ibss = ieee80211_sta_active_ibss(sdata);
 
         if (!active_ibss && !is_zero_ether_addr(ifibss->bssid)) {
@@ -1122,7 +1094,7 @@ int ieee80211_ibss_leave(struct ieee80211_sub_if_data *sdata)
                 if (ifibss->privacy)
                         capability |= WLAN_CAPABILITY_PRIVACY;
 
-                cbss = cfg80211_get_bss(local->hw.wiphy, ifibss->channel,
+                cbss = cfg80211_get_bss(local->hw.wiphy, ifibss->chandef.chan,
                                         ifibss->bssid, ifibss->ssid,
                                         ifibss->ssid_len, WLAN_CAPABILITY_IBSS |
                                         WLAN_CAPABILITY_PRIVACY,
@@ -1157,7 +1129,7 @@ int ieee80211_ibss_leave(struct ieee80211_sub_if_data *sdata)
         /* remove beacon */
         kfree(sdata->u.ibss.ie);
         presp = rcu_dereference_protected(ifibss->presp,
-                                          lockdep_is_held(&sdata->u.ibss.mtx));
+                                          lockdep_is_held(&sdata->wdev.mtx));
         RCU_INIT_POINTER(sdata->u.ibss.presp, NULL);
         sdata->vif.bss_conf.ibss_joined = false;
         sdata->vif.bss_conf.ibss_creator = false;
@@ -1173,7 +1145,5 @@ int ieee80211_ibss_leave(struct ieee80211_sub_if_data *sdata)
 
         del_timer_sync(&sdata->u.ibss.timer);
 
-        mutex_unlock(&sdata->u.ibss.mtx);
-
         return 0;
 }
diff --git a/net/mac80211/ieee80211_i.h b/net/mac80211/ieee80211_i.h
index 9ca8e3278cc0..8412a303993a 100644
--- a/net/mac80211/ieee80211_i.h
+++ b/net/mac80211/ieee80211_i.h
@@ -94,6 +94,7 @@ struct ieee80211_bss {
 #define IEEE80211_MAX_SUPP_RATES 32
         u8 supp_rates[IEEE80211_MAX_SUPP_RATES];
         size_t supp_rates_len;
+        struct ieee80211_rate *beacon_rate;
 
         /*
          * During association, we save an ERP value from a probe response so
@@ -366,7 +367,7 @@ struct ieee80211_mgd_assoc_data {
         u8 ssid_len;
         u8 supp_rates_len;
         bool wmm, uapsd;
-        bool have_beacon, need_beacon;
+        bool need_beacon;
         bool synced;
         bool timeout_started;
 
@@ -394,7 +395,6 @@ struct ieee80211_if_managed {
         bool nullfunc_failed;
         bool connection_loss;
 
-        struct mutex mtx;
         struct cfg80211_bss *associated;
         struct ieee80211_mgd_auth_data *auth_data;
         struct ieee80211_mgd_assoc_data *assoc_data;
@@ -405,6 +405,7 @@ struct ieee80211_if_managed {
 
         bool powersave; /* powersave requested for this iface */
         bool broken_ap; /* AP is broken -- turn off powersave */
+        bool have_beacon;
         u8 dtim_period;
         enum ieee80211_smps_mode req_smps, /* requested smps mode */
                                  driver_smps_mode; /* smps mode request */
@@ -488,8 +489,6 @@ struct ieee80211_if_managed {
 struct ieee80211_if_ibss {
         struct timer_list timer;
 
-        struct mutex mtx;
-
         unsigned long last_scan_completed;
 
         u32 basic_rates;
@@ -499,14 +498,12 @@ struct ieee80211_if_ibss {
         bool privacy;
 
         bool control_port;
-        unsigned int auth_frame_registrations;
 
         u8 bssid[ETH_ALEN] __aligned(2);
         u8 ssid[IEEE80211_MAX_SSID_LEN];
         u8 ssid_len, ie_len;
         u8 *ie;
-        struct ieee80211_channel *channel;
-        enum nl80211_channel_type channel_type;
+        struct cfg80211_chan_def chandef;
 
         unsigned long ibss_join_req;
         /* probe response/beacon for IBSS */
@@ -545,6 +542,7 @@ struct ieee80211_if_mesh {
         struct timer_list mesh_path_root_timer;
 
         unsigned long wrkq_flags;
+        unsigned long mbss_changed;
 
         u8 mesh_id[IEEE80211_MAX_MESH_ID_LEN];
         size_t mesh_id_len;
@@ -580,8 +578,6 @@ struct ieee80211_if_mesh {
         bool accepting_plinks;
         int num_gates;
         struct beacon_data __rcu *beacon;
-        /* just protects beacon updates for now */
-        struct mutex mtx;
         const u8 *ie;
         u8 ie_len;
         enum {
@@ -778,6 +774,26 @@ struct ieee80211_sub_if_data *vif_to_sdata(struct ieee80211_vif *p)
         return container_of(p, struct ieee80211_sub_if_data, vif);
 }
 
+static inline void sdata_lock(struct ieee80211_sub_if_data *sdata)
+        __acquires(&sdata->wdev.mtx)
+{
+        mutex_lock(&sdata->wdev.mtx);
+        __acquire(&sdata->wdev.mtx);
+}
+
+static inline void sdata_unlock(struct ieee80211_sub_if_data *sdata)
+        __releases(&sdata->wdev.mtx)
+{
+        mutex_unlock(&sdata->wdev.mtx);
+        __release(&sdata->wdev.mtx);
+}
+
+static inline void
+sdata_assert_lock(struct ieee80211_sub_if_data *sdata)
+{
+        lockdep_assert_held(&sdata->wdev.mtx);
+}
+
 static inline enum ieee80211_band
 ieee80211_get_sdata_band(struct ieee80211_sub_if_data *sdata)
 {
@@ -1507,9 +1523,6 @@ static inline void ieee802_11_parse_elems(const u8 *start, size_t len,
         ieee802_11_parse_elems_crc(start, len, action, elems, 0, 0);
 }
 
-u32 ieee80211_mandatory_rates(struct ieee80211_local *local,
-                              enum ieee80211_band band);
-
 void ieee80211_dynamic_ps_enable_work(struct work_struct *work);
 void ieee80211_dynamic_ps_disable_work(struct work_struct *work);
 void ieee80211_dynamic_ps_timer(unsigned long data);
diff --git a/net/mac80211/iface.c b/net/mac80211/iface.c
index 98d20c0f6fed..cc117591f678 100644
--- a/net/mac80211/iface.c
+++ b/net/mac80211/iface.c
@@ -159,7 +159,8 @@ static int ieee80211_change_mtu(struct net_device *dev, int new_mtu)
         return 0;
 }
 
-static int ieee80211_verify_mac(struct ieee80211_sub_if_data *sdata, u8 *addr)
+static int ieee80211_verify_mac(struct ieee80211_sub_if_data *sdata, u8 *addr,
+                                bool check_dup)
 {
         struct ieee80211_local *local = sdata->local;
         struct ieee80211_sub_if_data *iter;
@@ -180,13 +181,16 @@ static int ieee80211_verify_mac(struct ieee80211_sub_if_data *sdata, u8 *addr)
                 ((u64)m[2] << 3*8) | ((u64)m[3] << 2*8) |
                 ((u64)m[4] << 1*8) | ((u64)m[5] << 0*8);
 
+        if (!check_dup)
+                return ret;
 
         mutex_lock(&local->iflist_mtx);
         list_for_each_entry(iter, &local->interfaces, list) {
                 if (iter == sdata)
                         continue;
 
-                if (iter->vif.type == NL80211_IFTYPE_MONITOR)
+                if (iter->vif.type == NL80211_IFTYPE_MONITOR &&
+                    !(iter->u.mntr_flags & MONITOR_FLAG_ACTIVE))
                         continue;
 
                 m = iter->vif.addr;
@@ -208,12 +212,17 @@ static int ieee80211_change_mac(struct net_device *dev, void *addr)
 {
         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
         struct sockaddr *sa = addr;
+        bool check_dup = true;
         int ret;
 
         if (ieee80211_sdata_running(sdata))
                 return -EBUSY;
 
-        ret = ieee80211_verify_mac(sdata, sa->sa_data);
+        if (sdata->vif.type == NL80211_IFTYPE_MONITOR &&
+            !(sdata->u.mntr_flags & MONITOR_FLAG_ACTIVE))
+                check_dup = false;
+
+        ret = ieee80211_verify_mac(sdata, sa->sa_data, check_dup);
         if (ret)
                 return ret;
 
@@ -545,7 +554,11 @@ int ieee80211_do_open(struct wireless_dev *wdev, bool coming_up)
                         break;
                 }
 
-                if (local->monitors == 0 && local->open_count == 0) {
+                if (sdata->u.mntr_flags & MONITOR_FLAG_ACTIVE) {
+                        res = drv_add_interface(local, sdata);
+                        if (res)
+                                goto err_stop;
+                } else if (local->monitors == 0 && local->open_count == 0) {
                         res = ieee80211_add_virtual_monitor(local);
                         if (res)
                                 goto err_stop;
@@ -923,7 +936,11 @@ static void ieee80211_do_stop(struct ieee80211_sub_if_data *sdata,
                 mutex_lock(&local->mtx);
                 ieee80211_recalc_idle(local);
                 mutex_unlock(&local->mtx);
-                break;
+
+                if (!(sdata->u.mntr_flags & MONITOR_FLAG_ACTIVE))
+                        break;
+
+                /* fall through */
         default:
                 if (going_down)
                         drv_remove_interface(local, sdata);
@@ -1072,7 +1089,7 @@ static const struct net_device_ops ieee80211_monitorif_ops = {
         .ndo_start_xmit         = ieee80211_monitor_start_xmit,
         .ndo_set_rx_mode        = ieee80211_set_multicast_list,
         .ndo_change_mtu         = ieee80211_change_mtu,
-        .ndo_set_mac_address    = eth_mac_addr,
+        .ndo_set_mac_address    = ieee80211_change_mac,
         .ndo_select_queue       = ieee80211_monitor_select_queue,
 };
 
@@ -1747,10 +1764,9 @@ void ieee80211_remove_interfaces(struct ieee80211_local *local)
 }
 
 static int netdev_notify(struct notifier_block *nb,
-                         unsigned long state,
-                         void *ndev)
+                         unsigned long state, void *ptr)
 {
-        struct net_device *dev = ndev;
+        struct net_device *dev = netdev_notifier_info_to_dev(ptr);
         struct ieee80211_sub_if_data *sdata;
 
         if (state != NETDEV_CHANGENAME)
diff --git a/net/mac80211/key.c b/net/mac80211/key.c
index 67059b88fea5..e39cc91d0cf1 100644
--- a/net/mac80211/key.c
+++ b/net/mac80211/key.c
@@ -335,12 +335,12 @@ struct ieee80211_key *ieee80211_key_alloc(u32 cipher, int idx, size_t key_len,
         switch (cipher) {
         case WLAN_CIPHER_SUITE_WEP40:
         case WLAN_CIPHER_SUITE_WEP104:
-                key->conf.iv_len = WEP_IV_LEN;
-                key->conf.icv_len = WEP_ICV_LEN;
+                key->conf.iv_len = IEEE80211_WEP_IV_LEN;
+                key->conf.icv_len = IEEE80211_WEP_ICV_LEN;
                 break;
         case WLAN_CIPHER_SUITE_TKIP:
-                key->conf.iv_len = TKIP_IV_LEN;
-                key->conf.icv_len = TKIP_ICV_LEN;
+                key->conf.iv_len = IEEE80211_TKIP_IV_LEN;
+                key->conf.icv_len = IEEE80211_TKIP_ICV_LEN;
                 if (seq) {
                         for (i = 0; i < IEEE80211_NUM_TIDS; i++) {
                                 key->u.tkip.rx[i].iv32 =
@@ -352,13 +352,13 @@ struct ieee80211_key *ieee80211_key_alloc(u32 cipher, int idx, size_t key_len,
                 spin_lock_init(&key->u.tkip.txlock);
                 break;
         case WLAN_CIPHER_SUITE_CCMP:
-                key->conf.iv_len = CCMP_HDR_LEN;
-                key->conf.icv_len = CCMP_MIC_LEN;
+                key->conf.iv_len = IEEE80211_CCMP_HDR_LEN;
+                key->conf.icv_len = IEEE80211_CCMP_MIC_LEN;
                 if (seq) {
                         for (i = 0; i < IEEE80211_NUM_TIDS + 1; i++)
-                                for (j = 0; j < CCMP_PN_LEN; j++)
+                                for (j = 0; j < IEEE80211_CCMP_PN_LEN; j++)
                                         key->u.ccmp.rx_pn[i][j] =
-                                                seq[CCMP_PN_LEN - j - 1];
+                                                seq[IEEE80211_CCMP_PN_LEN - j - 1];
                 }
                 /*
                  * Initialize AES key state here as an optimization so that
@@ -375,9 +375,9 @@ struct ieee80211_key *ieee80211_key_alloc(u32 cipher, int idx, size_t key_len,
                 key->conf.iv_len = 0;
                 key->conf.icv_len = sizeof(struct ieee80211_mmie);
                 if (seq)
-                        for (j = 0; j < CMAC_PN_LEN; j++)
+                        for (j = 0; j < IEEE80211_CMAC_PN_LEN; j++)
                                 key->u.aes_cmac.rx_pn[j] =
-                                        seq[CMAC_PN_LEN - j - 1];
+                                        seq[IEEE80211_CMAC_PN_LEN - j - 1];
                 /*
                  * Initialize AES key state here as an optimization so that
                  * it does not need to be initialized for every packet.
@@ -740,13 +740,13 @@ void ieee80211_get_key_rx_seq(struct ieee80211_key_conf *keyconf,
                         pn = key->u.ccmp.rx_pn[IEEE80211_NUM_TIDS];
                 else
                         pn = key->u.ccmp.rx_pn[tid];
-                memcpy(seq->ccmp.pn, pn, CCMP_PN_LEN);
+                memcpy(seq->ccmp.pn, pn, IEEE80211_CCMP_PN_LEN);
                 break;
         case WLAN_CIPHER_SUITE_AES_CMAC:
                 if (WARN_ON(tid != 0))
                         return;
                 pn = key->u.aes_cmac.rx_pn;
-                memcpy(seq->aes_cmac.pn, pn, CMAC_PN_LEN);
+                memcpy(seq->aes_cmac.pn, pn, IEEE80211_CMAC_PN_LEN);
                 break;
         }
 }
diff --git a/net/mac80211/key.h b/net/mac80211/key.h
index e8de3e6d7804..036d57e76a5e 100644
--- a/net/mac80211/key.h
+++ b/net/mac80211/key.h
@@ -19,17 +19,6 @@
 #define NUM_DEFAULT_KEYS 4
 #define NUM_DEFAULT_MGMT_KEYS 2
 
-#define WEP_IV_LEN              4
-#define WEP_ICV_LEN             4
-#define ALG_CCMP_KEY_LEN        16
-#define CCMP_HDR_LEN            8
-#define CCMP_MIC_LEN            8
-#define CCMP_TK_LEN             16
-#define CCMP_PN_LEN             6
-#define TKIP_IV_LEN             8
-#define TKIP_ICV_LEN            4
-#define CMAC_PN_LEN             6
-
 struct ieee80211_local;
 struct ieee80211_sub_if_data;
 struct sta_info;
@@ -93,13 +82,13 @@ struct ieee80211_key {
                          * frames and the last counter is used with Robust
                          * Management frames.
                          */
-                        u8 rx_pn[IEEE80211_NUM_TIDS + 1][CCMP_PN_LEN];
+                        u8 rx_pn[IEEE80211_NUM_TIDS + 1][IEEE80211_CCMP_PN_LEN];
                         struct crypto_cipher *tfm;
                         u32 replays; /* dot11RSNAStatsCCMPReplays */
                 } ccmp;
                 struct {
                         atomic64_t tx_pn;
-                        u8 rx_pn[CMAC_PN_LEN];
+                        u8 rx_pn[IEEE80211_CMAC_PN_LEN];
                         struct crypto_cipher *tfm;
                         u32 replays; /* dot11RSNAStatsCMACReplays */
                         u32 icverrors; /* dot11RSNAStatsCMACICVErrors */
diff --git a/net/mac80211/main.c b/net/mac80211/main.c
index 8a7bfc47d577..091088ac7890 100644
--- a/net/mac80211/main.c
+++ b/net/mac80211/main.c
@@ -331,7 +331,7 @@ static int ieee80211_ifa_changed(struct notifier_block *nb,
                 return NOTIFY_DONE;
 
         ifmgd = &sdata->u.mgd;
-        mutex_lock(&ifmgd->mtx);
+        sdata_lock(sdata);
 
         /* Copy the addresses to the bss_conf list */
         ifa = idev->ifa_list;
@@ -349,7 +349,7 @@ static int ieee80211_ifa_changed(struct notifier_block *nb,
                 ieee80211_bss_info_change_notify(sdata,
                                                  BSS_CHANGED_ARP_FILTER);
 
-        mutex_unlock(&ifmgd->mtx);
+        sdata_unlock(sdata);
 
         return NOTIFY_DONE;
 }
@@ -686,8 +686,7 @@ int ieee80211_register_hw(struct ieee80211_hw *hw)
                 return -EINVAL;
 
 #ifdef CONFIG_PM
-        if ((hw->wiphy->wowlan.flags || hw->wiphy->wowlan.n_patterns) &&
-            (!local->ops->suspend || !local->ops->resume))
+        if (hw->wiphy->wowlan && (!local->ops->suspend || !local->ops->resume))
                 return -EINVAL;
 #endif
 
@@ -921,7 +920,7 @@ int ieee80211_register_hw(struct ieee80211_hw *hw)
                 hw->queues = IEEE80211_MAX_QUEUES;
 
         local->workqueue =
-                alloc_ordered_workqueue(wiphy_name(local->hw.wiphy), 0);
+                alloc_ordered_workqueue("%s", 0, wiphy_name(local->hw.wiphy));
         if (!local->workqueue) {
                 result = -ENOMEM;
                 goto fail_workqueue;
diff --git a/net/mac80211/mesh.c b/net/mac80211/mesh.c
index 6952760881c8..447f41bbe744 100644
--- a/net/mac80211/mesh.c
+++ b/net/mac80211/mesh.c
@@ -271,8 +271,7 @@ int mesh_add_meshconf_ie(struct ieee80211_sub_if_data *sdata,
         *pos++ = ifmsh->mesh_auth_id;
         /* Mesh Formation Info - number of neighbors */
         neighbors = atomic_read(&ifmsh->estab_plinks);
-        /* Number of neighbor mesh STAs or 15 whichever is smaller */
-        neighbors = (neighbors > 15) ? 15 : neighbors;
+        neighbors = min_t(int, neighbors, IEEE80211_MAX_MESH_PEERINGS);
         *pos++ = neighbors << 1;
         /* Mesh capability */
         *pos = IEEE80211_MESHCONF_CAPAB_FORWARDING;
@@ -417,7 +416,9 @@ int mesh_add_ht_cap_ie(struct ieee80211_sub_if_data *sdata,
 
         sband = local->hw.wiphy->bands[band];
         if (!sband->ht_cap.ht_supported ||
-            sdata->vif.bss_conf.chandef.width == NL80211_CHAN_WIDTH_20_NOHT)
+            sdata->vif.bss_conf.chandef.width == NL80211_CHAN_WIDTH_20_NOHT ||
+            sdata->vif.bss_conf.chandef.width == NL80211_CHAN_WIDTH_5 ||
+            sdata->vif.bss_conf.chandef.width == NL80211_CHAN_WIDTH_10)
                 return 0;
 
         if (skb_tailroom(skb) < 2 + sizeof(struct ieee80211_ht_cap))
@@ -573,7 +574,7 @@ static void ieee80211_mesh_housekeeping(struct ieee80211_sub_if_data *sdata)
         struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
         u32 changed;
 
-        ieee80211_sta_expire(sdata, IEEE80211_MESH_PEER_INACTIVITY_LIMIT);
+        ieee80211_sta_expire(sdata, ifmsh->mshcfg.plink_timeout * HZ);
         mesh_path_expire(sdata);
 
         changed = mesh_accept_plinks_update(sdata);
@@ -697,38 +698,38 @@ out_free:
 }
 
 static int
-ieee80211_mesh_rebuild_beacon(struct ieee80211_if_mesh *ifmsh)
+ieee80211_mesh_rebuild_beacon(struct ieee80211_sub_if_data *sdata)
 {
         struct beacon_data *old_bcn;
         int ret;
 
-        mutex_lock(&ifmsh->mtx);
-
-        old_bcn = rcu_dereference_protected(ifmsh->beacon,
-                                            lockdep_is_held(&ifmsh->mtx));
-        ret = ieee80211_mesh_build_beacon(ifmsh);
+        old_bcn = rcu_dereference_protected(sdata->u.mesh.beacon,
+                                            lockdep_is_held(&sdata->wdev.mtx));
+        ret = ieee80211_mesh_build_beacon(&sdata->u.mesh);
         if (ret)
                 /* just reuse old beacon */
-                goto out;
+                return ret;
 
         if (old_bcn)
                 kfree_rcu(old_bcn, rcu_head);
-out:
-        mutex_unlock(&ifmsh->mtx);
-        return ret;
+        return 0;
 }
 
 void ieee80211_mbss_info_change_notify(struct ieee80211_sub_if_data *sdata,
                                        u32 changed)
 {
-        if (sdata->vif.bss_conf.enable_beacon &&
-            (changed & (BSS_CHANGED_BEACON |
-                        BSS_CHANGED_HT |
-                        BSS_CHANGED_BASIC_RATES |
-                        BSS_CHANGED_BEACON_INT)))
-                if (ieee80211_mesh_rebuild_beacon(&sdata->u.mesh))
-                        return;
-        ieee80211_bss_info_change_notify(sdata, changed);
+        struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
+        unsigned long bits = changed;
+        u32 bit;
+
+        if (!bits)
+                return;
+
+        /* if we race with running work, worst case this work becomes a noop */
+        for_each_set_bit(bit, &bits, sizeof(changed) * BITS_PER_BYTE)
+                set_bit(bit, &ifmsh->mbss_changed);
+        set_bit(MESH_WORK_MBSS_CHANGED, &ifmsh->wrkq_flags);
+        ieee80211_queue_work(&sdata->local->hw, &sdata->work);
 }
 
 int ieee80211_start_mesh(struct ieee80211_sub_if_data *sdata)
@@ -740,7 +741,6 @@ int ieee80211_start_mesh(struct ieee80211_sub_if_data *sdata)
                       BSS_CHANGED_HT |
                       BSS_CHANGED_BASIC_RATES |
                       BSS_CHANGED_BEACON_INT;
-        enum ieee80211_band band = ieee80211_get_sdata_band(sdata);
 
         local->fif_other_bss++;
         /* mesh ifaces must set allmulti to forward mcast traffic */
@@ -748,7 +748,6 @@ int ieee80211_start_mesh(struct ieee80211_sub_if_data *sdata)
         ieee80211_configure_filter(local);
 
         ifmsh->mesh_cc_id = 0;  /* Disabled */
-        ifmsh->mesh_auth_id = 0;        /* Disabled */
         /* register sync ops from extensible synchronization framework */
         ifmsh->sync_ops = ieee80211_mesh_sync_ops_get(ifmsh->mesh_sp_id);
         ifmsh->adjusting_tbtt = false;
@@ -759,8 +758,6 @@ int ieee80211_start_mesh(struct ieee80211_sub_if_data *sdata)
         sdata->vif.bss_conf.ht_operation_mode =
                                 ifmsh->mshcfg.ht_opmode;
         sdata->vif.bss_conf.enable_beacon = true;
-        sdata->vif.bss_conf.basic_rates =
-                ieee80211_mandatory_rates(local, band);
 
         changed |= ieee80211_mps_local_status_update(sdata);
 
@@ -788,12 +785,10 @@ void ieee80211_stop_mesh(struct ieee80211_sub_if_data *sdata)
         sdata->vif.bss_conf.enable_beacon = false;
         clear_bit(SDATA_STATE_OFFCHANNEL_BEACON_STOPPED, &sdata->state);
         ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BEACON_ENABLED);
-        mutex_lock(&ifmsh->mtx);
         bcn = rcu_dereference_protected(ifmsh->beacon,
-                                        lockdep_is_held(&ifmsh->mtx));
+                                        lockdep_is_held(&sdata->wdev.mtx));
         rcu_assign_pointer(ifmsh->beacon, NULL);
         kfree_rcu(bcn, rcu_head);
-        mutex_unlock(&ifmsh->mtx);
 
         /* flush STAs and mpaths on this iface */
         sta_info_flush(sdata);
@@ -806,14 +801,10 @@ void ieee80211_stop_mesh(struct ieee80211_sub_if_data *sdata)
         del_timer_sync(&sdata->u.mesh.housekeeping_timer);
         del_timer_sync(&sdata->u.mesh.mesh_path_root_timer);
         del_timer_sync(&sdata->u.mesh.mesh_path_timer);
-        /*
-         * If the timer fired while we waited for it, it will have
-         * requeued the work. Now the work will be running again
-         * but will not rearm the timer again because it checks
-         * whether the interface is running, which, at this point,
-         * it no longer is.
-         */
-        cancel_work_sync(&sdata->work);
+
+        /* clear any mesh work (for next join) we may have accrued */
+        ifmsh->wrkq_flags = 0;
+        ifmsh->mbss_changed = 0;
 
         local->fif_other_bss--;
         atomic_dec(&local->iff_allmultis);
@@ -954,6 +945,12 @@ void ieee80211_mesh_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata,
         struct ieee80211_mgmt *mgmt;
         u16 stype;
 
+        sdata_lock(sdata);
+
+        /* mesh already went down */
+        if (!sdata->wdev.mesh_id_len)
+                goto out;
+
         rx_status = IEEE80211_SKB_RXCB(skb);
         mgmt = (struct ieee80211_mgmt *) skb->data;
         stype = le16_to_cpu(mgmt->frame_control) & IEEE80211_FCTL_STYPE;
@@ -971,12 +968,42 @@ void ieee80211_mesh_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata,
                 ieee80211_mesh_rx_mgmt_action(sdata, mgmt, skb->len, rx_status);
                 break;
         }
+out:
+        sdata_unlock(sdata);
+}
+
+static void mesh_bss_info_changed(struct ieee80211_sub_if_data *sdata)
+{
+        struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
+        u32 bit, changed = 0;
+
+        for_each_set_bit(bit, &ifmsh->mbss_changed,
+                         sizeof(changed) * BITS_PER_BYTE) {
+                clear_bit(bit, &ifmsh->mbss_changed);
+                changed |= BIT(bit);
+        }
+
+        if (sdata->vif.bss_conf.enable_beacon &&
+            (changed & (BSS_CHANGED_BEACON |
+                        BSS_CHANGED_HT |
+                        BSS_CHANGED_BASIC_RATES |
+                        BSS_CHANGED_BEACON_INT)))
+                if (ieee80211_mesh_rebuild_beacon(sdata))
+                        return;
+
+        ieee80211_bss_info_change_notify(sdata, changed);
 }
 
 void ieee80211_mesh_work(struct ieee80211_sub_if_data *sdata)
 {
         struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
 
+        sdata_lock(sdata);
+
+        /* mesh already went down */
+        if (!sdata->wdev.mesh_id_len)
+                goto out;
+
         if (ifmsh->preq_queue_len &&
             time_after(jiffies,
                        ifmsh->last_preq + msecs_to_jiffies(ifmsh->mshcfg.dot11MeshHWMPpreqMinInterval)))
@@ -996,6 +1023,11 @@ void ieee80211_mesh_work(struct ieee80211_sub_if_data *sdata)
 
         if (test_and_clear_bit(MESH_WORK_DRIFT_ADJUST, &ifmsh->wrkq_flags))
                 mesh_sync_adjust_tbtt(sdata);
+
+        if (test_and_clear_bit(MESH_WORK_MBSS_CHANGED, &ifmsh->wrkq_flags))
+                mesh_bss_info_changed(sdata);
+out:
+        sdata_unlock(sdata);
 }
 
 void ieee80211_mesh_notify_scan_completed(struct ieee80211_local *local)
@@ -1041,7 +1073,6 @@ void ieee80211_mesh_init_sdata(struct ieee80211_sub_if_data *sdata)
         spin_lock_init(&ifmsh->mesh_preq_queue_lock);
         spin_lock_init(&ifmsh->sync_offset_lock);
         RCU_INIT_POINTER(ifmsh->beacon, NULL);
-        mutex_init(&ifmsh->mtx);
 
         sdata->vif.bss_conf.bssid = zero_addr;
 }
diff --git a/net/mac80211/mesh.h b/net/mac80211/mesh.h
index da158774eebb..2bc7fd2f787d 100644
--- a/net/mac80211/mesh.h
+++ b/net/mac80211/mesh.h
@@ -58,6 +58,7 @@ enum mesh_path_flags {
  * @MESH_WORK_ROOT: the mesh root station needs to send a frame
  * @MESH_WORK_DRIFT_ADJUST: time to compensate for clock drift relative to other
  * mesh nodes
+ * @MESH_WORK_MBSS_CHANGED: rebuild beacon and notify driver of BSS changes
  */
 enum mesh_deferred_task_flags {
         MESH_WORK_HOUSEKEEPING,
@@ -65,6 +66,7 @@ enum mesh_deferred_task_flags {
         MESH_WORK_GROW_MPP_TABLE,
         MESH_WORK_ROOT,
         MESH_WORK_DRIFT_ADJUST,
+        MESH_WORK_MBSS_CHANGED,
 };
 
 /**
@@ -188,7 +190,6 @@ struct mesh_rmc {
         u32 idx_mask;
 };
 
-#define IEEE80211_MESH_PEER_INACTIVITY_LIMIT (1800 * HZ)
 #define IEEE80211_MESH_HOUSEKEEPING_INTERVAL (60 * HZ)
 
 #define MESH_PATH_EXPIRE (600 * HZ)
@@ -324,14 +325,14 @@ static inline
 u32 mesh_plink_inc_estab_count(struct ieee80211_sub_if_data *sdata)
 {
         atomic_inc(&sdata->u.mesh.estab_plinks);
-        return mesh_accept_plinks_update(sdata);
+        return mesh_accept_plinks_update(sdata) | BSS_CHANGED_BEACON;
 }
 
 static inline
 u32 mesh_plink_dec_estab_count(struct ieee80211_sub_if_data *sdata)
 {
         atomic_dec(&sdata->u.mesh.estab_plinks);
-        return mesh_accept_plinks_update(sdata);
+        return mesh_accept_plinks_update(sdata) | BSS_CHANGED_BEACON;
 }
 
 static inline int mesh_plink_free_count(struct ieee80211_sub_if_data *sdata)
diff --git a/net/mac80211/mesh_plink.c b/net/mac80211/mesh_plink.c
index 09bebed99416..02c05fa15c20 100644
--- a/net/mac80211/mesh_plink.c
+++ b/net/mac80211/mesh_plink.c
@@ -154,8 +154,14 @@ static u32 mesh_set_ht_prot_mode(struct ieee80211_sub_if_data *sdata)
         u16 ht_opmode;
         bool non_ht_sta = false, ht20_sta = false;
 
-        if (sdata->vif.bss_conf.chandef.width == NL80211_CHAN_WIDTH_20_NOHT)
+        switch (sdata->vif.bss_conf.chandef.width) {
+        case NL80211_CHAN_WIDTH_20_NOHT:
+        case NL80211_CHAN_WIDTH_5:
+        case NL80211_CHAN_WIDTH_10:
                 return 0;
+        default:
+                break;
+        }
 
         rcu_read_lock();
         list_for_each_entry_rcu(sta, &local->sta_list, list) {
diff --git a/net/mac80211/mlme.c b/net/mac80211/mlme.c
index 741448b30825..ae31968d42d3 100644
--- a/net/mac80211/mlme.c
+++ b/net/mac80211/mlme.c
@@ -91,41 +91,6 @@ MODULE_PARM_DESC(probe_wait_ms,
 #define IEEE80211_SIGNAL_AVE_MIN_COUNT  4
 
 /*
- * All cfg80211 functions have to be called outside a locked
- * section so that they can acquire a lock themselves... This
- * is much simpler than queuing up things in cfg80211, but we
- * do need some indirection for that here.
- */
-enum rx_mgmt_action {
-        /* no action required */
-        RX_MGMT_NONE,
-
-        /* caller must call cfg80211_send_deauth() */
-        RX_MGMT_CFG80211_DEAUTH,
-
-        /* caller must call cfg80211_send_disassoc() */
-        RX_MGMT_CFG80211_DISASSOC,
-
-        /* caller must call cfg80211_send_rx_auth() */
-        RX_MGMT_CFG80211_RX_AUTH,
-
-        /* caller must call cfg80211_send_rx_assoc() */
-        RX_MGMT_CFG80211_RX_ASSOC,
-
-        /* caller must call cfg80211_send_assoc_timeout() */
-        RX_MGMT_CFG80211_ASSOC_TIMEOUT,
-
-        /* used when a processed beacon causes a deauth */
-        RX_MGMT_CFG80211_TX_DEAUTH,
-};
-
-/* utils */
-static inline void ASSERT_MGD_MTX(struct ieee80211_if_managed *ifmgd)
-{
-        lockdep_assert_held(&ifmgd->mtx);
-}
-
-/*
  * We can have multiple work items (and connection probing)
  * scheduling this timer, but we need to take care to only
  * reschedule it when it should fire _earlier_ than it was
@@ -135,13 +100,14 @@ static inline void ASSERT_MGD_MTX(struct ieee80211_if_managed *ifmgd)
  * has happened -- the work that runs from this timer will
  * do that.
  */
-static void run_again(struct ieee80211_if_managed *ifmgd, unsigned long timeout)
+static void run_again(struct ieee80211_sub_if_data *sdata,
+                      unsigned long timeout)
 {
-        ASSERT_MGD_MTX(ifmgd);
+        sdata_assert_lock(sdata);
 
-        if (!timer_pending(&ifmgd->timer) ||
-            time_before(timeout, ifmgd->timer.expires))
-                mod_timer(&ifmgd->timer, timeout);
+        if (!timer_pending(&sdata->u.mgd.timer) ||
+            time_before(timeout, sdata->u.mgd.timer.expires))
+                mod_timer(&sdata->u.mgd.timer, timeout);
 }
 
 void ieee80211_sta_reset_beacon_monitor(struct ieee80211_sub_if_data *sdata)
@@ -224,6 +190,12 @@ static u32 chandef_downgrade(struct cfg80211_chan_def *c)
                 c->width = NL80211_CHAN_WIDTH_20_NOHT;
                 ret = IEEE80211_STA_DISABLE_HT | IEEE80211_STA_DISABLE_VHT;
                 break;
+        case NL80211_CHAN_WIDTH_5:
+        case NL80211_CHAN_WIDTH_10:
+                WARN_ON_ONCE(1);
+                /* keep c->width */
+                ret = IEEE80211_STA_DISABLE_HT | IEEE80211_STA_DISABLE_VHT;
+                break;
         }
 
         WARN_ON_ONCE(!cfg80211_chandef_valid(c));
@@ -652,7 +624,7 @@ static void ieee80211_send_assoc(struct ieee80211_sub_if_data *sdata)
         struct ieee80211_channel *chan;
         u32 rates = 0;
 
-        lockdep_assert_held(&ifmgd->mtx);
+        sdata_assert_lock(sdata);
 
         rcu_read_lock();
         chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
@@ -914,6 +886,10 @@ void ieee80211_send_nullfunc(struct ieee80211_local *local,
 
         IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_INTFL_DONT_ENCRYPT |
                                         IEEE80211_TX_INTFL_OFFCHAN_TX_OK;
+
+        if (local->hw.flags & IEEE80211_HW_REPORTS_TX_ACK_STATUS)
+                IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_CTL_REQ_TX_STATUS;
+
         if (ifmgd->flags & (IEEE80211_STA_BEACON_POLL |
                             IEEE80211_STA_CONNECTION_POLL))
                 IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_CTL_USE_MINRATE;
@@ -962,7 +938,7 @@ static void ieee80211_chswitch_work(struct work_struct *work)
         if (!ieee80211_sdata_running(sdata))
                 return;
 
-        mutex_lock(&ifmgd->mtx);
+        sdata_lock(sdata);
         if (!ifmgd->associated)
                 goto out;
 
@@ -985,7 +961,7 @@ static void ieee80211_chswitch_work(struct work_struct *work)
                                         IEEE80211_QUEUE_STOP_REASON_CSA);
  out:
         ifmgd->flags &= ~IEEE80211_STA_CSA_RECEIVED;
-        mutex_unlock(&ifmgd->mtx);
+        sdata_unlock(sdata);
 }
 
 void ieee80211_chswitch_done(struct ieee80211_vif *vif, bool success)
@@ -1036,7 +1012,7 @@ ieee80211_sta_process_chanswitch(struct ieee80211_sub_if_data *sdata,
         const struct ieee80211_ht_operation *ht_oper;
         int secondary_channel_offset = -1;
 
-        ASSERT_MGD_MTX(ifmgd);
+        sdata_assert_lock(sdata);
 
         if (!cbss)
                 return;
@@ -1390,6 +1366,9 @@ static bool ieee80211_powersave_allowed(struct ieee80211_sub_if_data *sdata)
                           IEEE80211_STA_CONNECTION_POLL))
                 return false;
 
+        if (!mgd->have_beacon)
+                return false;
+
         rcu_read_lock();
         sta = sta_info_get(sdata, mgd->bssid);
         if (sta)
@@ -1798,7 +1777,7 @@ static void ieee80211_set_associated(struct ieee80211_sub_if_data *sdata,
 
         ieee80211_led_assoc(local, 1);
 
-        if (sdata->u.mgd.assoc_data->have_beacon) {
+        if (sdata->u.mgd.have_beacon) {
                 /*
                  * If the AP is buggy we may get here with no DTIM period
                  * known, so assume it's 1 which is the only safe assumption
@@ -1806,8 +1785,10 @@ static void ieee80211_set_associated(struct ieee80211_sub_if_data *sdata,
                  * probably just won't work at all.
                  */
                 bss_conf->dtim_period = sdata->u.mgd.dtim_period ?: 1;
-                bss_info_changed |= BSS_CHANGED_DTIM_PERIOD;
+                bss_conf->beacon_rate = bss->beacon_rate;
+                bss_info_changed |= BSS_CHANGED_BEACON_INFO;
         } else {
+                bss_conf->beacon_rate = NULL;
                 bss_conf->dtim_period = 0;
         }
 
@@ -1842,7 +1823,7 @@ static void ieee80211_set_disassoc(struct ieee80211_sub_if_data *sdata,
         struct ieee80211_local *local = sdata->local;
         u32 changed = 0;
 
-        ASSERT_MGD_MTX(ifmgd);
+        sdata_assert_lock(sdata);
 
         if (WARN_ON_ONCE(tx && !frame_buf))
                 return;
@@ -1930,6 +1911,9 @@ static void ieee80211_set_disassoc(struct ieee80211_sub_if_data *sdata,
         del_timer_sync(&sdata->u.mgd.chswitch_timer);
 
         sdata->vif.bss_conf.dtim_period = 0;
+        sdata->vif.bss_conf.beacon_rate = NULL;
+
+        ifmgd->have_beacon = false;
 
         ifmgd->flags = 0;
         ieee80211_vif_release_channel(sdata);
@@ -2051,7 +2035,7 @@ static void ieee80211_mgd_probe_ap_send(struct ieee80211_sub_if_data *sdata)
         }
 
         ifmgd->probe_timeout = jiffies + msecs_to_jiffies(probe_wait_ms);
-        run_again(ifmgd, ifmgd->probe_timeout);
+        run_again(sdata, ifmgd->probe_timeout);
         if (sdata->local->hw.flags & IEEE80211_HW_REPORTS_TX_ACK_STATUS)
                 ieee80211_flush_queues(sdata->local, sdata);
 }
@@ -2065,7 +2049,7 @@ static void ieee80211_mgd_probe_ap(struct ieee80211_sub_if_data *sdata,
         if (!ieee80211_sdata_running(sdata))
                 return;
 
-        mutex_lock(&ifmgd->mtx);
+        sdata_lock(sdata);
 
         if (!ifmgd->associated)
                 goto out;
@@ -2119,7 +2103,7 @@ static void ieee80211_mgd_probe_ap(struct ieee80211_sub_if_data *sdata,
         ifmgd->probe_send_count = 0;
         ieee80211_mgd_probe_ap_send(sdata);
  out:
-        mutex_unlock(&ifmgd->mtx);
+        sdata_unlock(sdata);
 }
 
 struct sk_buff *ieee80211_ap_probereq_get(struct ieee80211_hw *hw,
@@ -2135,7 +2119,7 @@ struct sk_buff *ieee80211_ap_probereq_get(struct ieee80211_hw *hw,
         if (WARN_ON(sdata->vif.type != NL80211_IFTYPE_STATION))
                 return NULL;
 
-        ASSERT_MGD_MTX(ifmgd);
+        sdata_assert_lock(sdata);
 
         if (ifmgd->associated)
                 cbss = ifmgd->associated;
@@ -2168,9 +2152,9 @@ static void __ieee80211_disconnect(struct ieee80211_sub_if_data *sdata)
         struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
         u8 frame_buf[IEEE80211_DEAUTH_FRAME_LEN];
 
-        mutex_lock(&ifmgd->mtx);
+        sdata_lock(sdata);
         if (!ifmgd->associated) {
-                mutex_unlock(&ifmgd->mtx);
+                sdata_unlock(sdata);
                 return;
         }
 
@@ -2181,13 +2165,10 @@ static void __ieee80211_disconnect(struct ieee80211_sub_if_data *sdata)
         ieee80211_wake_queues_by_reason(&sdata->local->hw,
                                         IEEE80211_MAX_QUEUE_MAP,
                                         IEEE80211_QUEUE_STOP_REASON_CSA);
-        mutex_unlock(&ifmgd->mtx);
 
-        /*
-         * must be outside lock due to cfg80211,
-         * but that's not a problem.
-         */
-        cfg80211_send_deauth(sdata->dev, frame_buf, IEEE80211_DEAUTH_FRAME_LEN);
+        cfg80211_tx_mlme_mgmt(sdata->dev, frame_buf,
+                              IEEE80211_DEAUTH_FRAME_LEN);
+        sdata_unlock(sdata);
 }
 
 static void ieee80211_beacon_connection_loss_work(struct work_struct *work)
@@ -2254,7 +2235,7 @@ static void ieee80211_destroy_auth_data(struct ieee80211_sub_if_data *sdata,
 {
         struct ieee80211_mgd_auth_data *auth_data = sdata->u.mgd.auth_data;
 
-        lockdep_assert_held(&sdata->u.mgd.mtx);
+        sdata_assert_lock(sdata);
 
         if (!assoc) {
                 sta_info_destroy_addr(sdata, auth_data->bss->bssid);
@@ -2295,27 +2276,26 @@ static void ieee80211_auth_challenge(struct ieee80211_sub_if_data *sdata,
                             auth_data->key_idx, tx_flags);
 }
 
-static enum rx_mgmt_action __must_check
-ieee80211_rx_mgmt_auth(struct ieee80211_sub_if_data *sdata,
-                       struct ieee80211_mgmt *mgmt, size_t len)
+static void ieee80211_rx_mgmt_auth(struct ieee80211_sub_if_data *sdata,
+                                   struct ieee80211_mgmt *mgmt, size_t len)
 {
         struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
         u8 bssid[ETH_ALEN];
         u16 auth_alg, auth_transaction, status_code;
         struct sta_info *sta;
 
-        lockdep_assert_held(&ifmgd->mtx);
+        sdata_assert_lock(sdata);
 
         if (len < 24 + 6)
-                return RX_MGMT_NONE;
+                return;
 
         if (!ifmgd->auth_data || ifmgd->auth_data->done)
-                return RX_MGMT_NONE;
+                return;
 
         memcpy(bssid, ifmgd->auth_data->bss->bssid, ETH_ALEN);
 
         if (!ether_addr_equal(bssid, mgmt->bssid))
-                return RX_MGMT_NONE;
+                return;
 
         auth_alg = le16_to_cpu(mgmt->u.auth.auth_alg);
         auth_transaction = le16_to_cpu(mgmt->u.auth.auth_transaction);
@@ -2327,14 +2307,15 @@ ieee80211_rx_mgmt_auth(struct ieee80211_sub_if_data *sdata,
                            mgmt->sa, auth_alg, ifmgd->auth_data->algorithm,
                            auth_transaction,
                            ifmgd->auth_data->expected_transaction);
-                return RX_MGMT_NONE;
+                return;
         }
 
         if (status_code != WLAN_STATUS_SUCCESS) {
                 sdata_info(sdata, "%pM denied authentication (status %d)\n",
                            mgmt->sa, status_code);
                 ieee80211_destroy_auth_data(sdata, false);
-                return RX_MGMT_CFG80211_RX_AUTH;
+                cfg80211_rx_mlme_mgmt(sdata->dev, (u8 *)mgmt, len);
+                return;
         }
 
         switch (ifmgd->auth_data->algorithm) {
@@ -2347,20 +2328,20 @@ ieee80211_rx_mgmt_auth(struct ieee80211_sub_if_data *sdata,
                 if (ifmgd->auth_data->expected_transaction != 4) {
                         ieee80211_auth_challenge(sdata, mgmt, len);
                         /* need another frame */
-                        return RX_MGMT_NONE;
+                        return;
                 }
                 break;
         default:
                 WARN_ONCE(1, "invalid auth alg %d",
                           ifmgd->auth_data->algorithm);
-                return RX_MGMT_NONE;
+                return;
         }
 
         sdata_info(sdata, "authenticated\n");
         ifmgd->auth_data->done = true;
         ifmgd->auth_data->timeout = jiffies + IEEE80211_AUTH_WAIT_ASSOC;
         ifmgd->auth_data->timeout_started = true;
-        run_again(ifmgd, ifmgd->auth_data->timeout);
+        run_again(sdata, ifmgd->auth_data->timeout);
 
         if (ifmgd->auth_data->algorithm == WLAN_AUTH_SAE &&
             ifmgd->auth_data->expected_transaction != 2) {
@@ -2368,7 +2349,8 @@ ieee80211_rx_mgmt_auth(struct ieee80211_sub_if_data *sdata,
                  * Report auth frame to user space for processing since another
                  * round of Authentication frames is still needed.
                  */
-                return RX_MGMT_CFG80211_RX_AUTH;
+                cfg80211_rx_mlme_mgmt(sdata->dev, (u8 *)mgmt, len);
+                return;
         }
 
         /* move station state to auth */
@@ -2384,30 +2366,29 @@ ieee80211_rx_mgmt_auth(struct ieee80211_sub_if_data *sdata,
         }
         mutex_unlock(&sdata->local->sta_mtx);
 
-        return RX_MGMT_CFG80211_RX_AUTH;
+        cfg80211_rx_mlme_mgmt(sdata->dev, (u8 *)mgmt, len);
+        return;
  out_err:
         mutex_unlock(&sdata->local->sta_mtx);
         /* ignore frame -- wait for timeout */
-        return RX_MGMT_NONE;
 }
 
 
-static enum rx_mgmt_action __must_check
-ieee80211_rx_mgmt_deauth(struct ieee80211_sub_if_data *sdata,
-                         struct ieee80211_mgmt *mgmt, size_t len)
+static void ieee80211_rx_mgmt_deauth(struct ieee80211_sub_if_data *sdata,
+                                     struct ieee80211_mgmt *mgmt, size_t len)
 {
         struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
         const u8 *bssid = NULL;
         u16 reason_code;
 
-        lockdep_assert_held(&ifmgd->mtx);
+        sdata_assert_lock(sdata);
 
         if (len < 24 + 2)
-                return RX_MGMT_NONE;
+                return;
 
         if (!ifmgd->associated ||
             !ether_addr_equal(mgmt->bssid, ifmgd->associated->bssid))
-                return RX_MGMT_NONE;
+                return;
 
         bssid = ifmgd->associated->bssid;
 
@@ -2418,25 +2399,24 @@ ieee80211_rx_mgmt_deauth(struct ieee80211_sub_if_data *sdata,
 
         ieee80211_set_disassoc(sdata, 0, 0, false, NULL);
 
-        return RX_MGMT_CFG80211_DEAUTH;
+        cfg80211_rx_mlme_mgmt(sdata->dev, (u8 *)mgmt, len);
 }
 
 
-static enum rx_mgmt_action __must_check
-ieee80211_rx_mgmt_disassoc(struct ieee80211_sub_if_data *sdata,
-                           struct ieee80211_mgmt *mgmt, size_t len)
+static void ieee80211_rx_mgmt_disassoc(struct ieee80211_sub_if_data *sdata,
+                                       struct ieee80211_mgmt *mgmt, size_t len)
 {
         struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
         u16 reason_code;
 
-        lockdep_assert_held(&ifmgd->mtx);
+        sdata_assert_lock(sdata);
 
         if (len < 24 + 2)
-                return RX_MGMT_NONE;
+                return;
 
         if (!ifmgd->associated ||
             !ether_addr_equal(mgmt->bssid, ifmgd->associated->bssid))
-                return RX_MGMT_NONE;
+                return;
 
         reason_code = le16_to_cpu(mgmt->u.disassoc.reason_code);
 
@@ -2445,7 +2425,7 @@ ieee80211_rx_mgmt_disassoc(struct ieee80211_sub_if_data *sdata,
 
         ieee80211_set_disassoc(sdata, 0, 0, false, NULL);
 
-        return RX_MGMT_CFG80211_DISASSOC;
+        cfg80211_rx_mlme_mgmt(sdata->dev, (u8 *)mgmt, len);
 }
 
 static void ieee80211_get_rates(struct ieee80211_supported_band *sband,
@@ -2495,7 +2475,7 @@ static void ieee80211_destroy_assoc_data(struct ieee80211_sub_if_data *sdata,
 {
         struct ieee80211_mgd_assoc_data *assoc_data = sdata->u.mgd.assoc_data;
 
-        lockdep_assert_held(&sdata->u.mgd.mtx);
+        sdata_assert_lock(sdata);
 
         if (!assoc) {
                 sta_info_destroy_addr(sdata, assoc_data->bss->bssid);
@@ -2749,10 +2729,9 @@ static bool ieee80211_assoc_success(struct ieee80211_sub_if_data *sdata,
         return ret;
 }
 
-static enum rx_mgmt_action __must_check
-ieee80211_rx_mgmt_assoc_resp(struct ieee80211_sub_if_data *sdata,
-                             struct ieee80211_mgmt *mgmt, size_t len,
-                             struct cfg80211_bss **bss)
+static void ieee80211_rx_mgmt_assoc_resp(struct ieee80211_sub_if_data *sdata,
+                                         struct ieee80211_mgmt *mgmt,
+                                         size_t len)
 {
         struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
         struct ieee80211_mgd_assoc_data *assoc_data = ifmgd->assoc_data;
@@ -2760,13 +2739,14 @@ ieee80211_rx_mgmt_assoc_resp(struct ieee80211_sub_if_data *sdata,
         struct ieee802_11_elems elems;
         u8 *pos;
         bool reassoc;
+        struct cfg80211_bss *bss;
 
-        lockdep_assert_held(&ifmgd->mtx);
+        sdata_assert_lock(sdata);
 
         if (!assoc_data)
-                return RX_MGMT_NONE;
+                return;
         if (!ether_addr_equal(assoc_data->bss->bssid, mgmt->bssid))
-                return RX_MGMT_NONE;
+                return;
 
         /*
          * AssocResp and ReassocResp have identical structure, so process both
@@ -2774,7 +2754,7 @@ ieee80211_rx_mgmt_assoc_resp(struct ieee80211_sub_if_data *sdata,
          */
 
         if (len < 24 + 6)
-                return RX_MGMT_NONE;
+                return;
 
         reassoc = ieee80211_is_reassoc_req(mgmt->frame_control);
         capab_info = le16_to_cpu(mgmt->u.assoc_resp.capab_info);
@@ -2801,22 +2781,22 @@ ieee80211_rx_mgmt_assoc_resp(struct ieee80211_sub_if_data *sdata,
                 assoc_data->timeout = jiffies + msecs_to_jiffies(ms);
                 assoc_data->timeout_started = true;
                 if (ms > IEEE80211_ASSOC_TIMEOUT)
-                        run_again(ifmgd, assoc_data->timeout);
-                return RX_MGMT_NONE;
+                        run_again(sdata, assoc_data->timeout);
+                return;
         }
 
-        *bss = assoc_data->bss;
+        bss = assoc_data->bss;
 
         if (status_code != WLAN_STATUS_SUCCESS) {
                 sdata_info(sdata, "%pM denied association (code=%d)\n",
                            mgmt->sa, status_code);
                 ieee80211_destroy_assoc_data(sdata, false);
         } else {
-                if (!ieee80211_assoc_success(sdata, *bss, mgmt, len)) {
+                if (!ieee80211_assoc_success(sdata, bss, mgmt, len)) {
                         /* oops -- internal error -- send timeout for now */
                         ieee80211_destroy_assoc_data(sdata, false);
-                        cfg80211_put_bss(sdata->local->hw.wiphy, *bss);
-                        return RX_MGMT_CFG80211_ASSOC_TIMEOUT;
+                        cfg80211_assoc_timeout(sdata->dev, bss);
+                        return;
                 }
                 sdata_info(sdata, "associated\n");
 
@@ -2828,7 +2808,7 @@ ieee80211_rx_mgmt_assoc_resp(struct ieee80211_sub_if_data *sdata,
                 ieee80211_destroy_assoc_data(sdata, true);
         }
 
-        return RX_MGMT_CFG80211_RX_ASSOC;
+        cfg80211_rx_assoc_resp(sdata->dev, bss, (u8 *)mgmt, len);
 }
 
 static void ieee80211_rx_bss_info(struct ieee80211_sub_if_data *sdata,
@@ -2840,23 +2820,8 @@ static void ieee80211_rx_bss_info(struct ieee80211_sub_if_data *sdata,
         int freq;
         struct ieee80211_bss *bss;
         struct ieee80211_channel *channel;
-        bool need_ps = false;
-
-        lockdep_assert_held(&sdata->u.mgd.mtx);
 
-        if ((sdata->u.mgd.associated &&
-             ether_addr_equal(mgmt->bssid, sdata->u.mgd.associated->bssid)) ||
-            (sdata->u.mgd.assoc_data &&
-             ether_addr_equal(mgmt->bssid,
-                              sdata->u.mgd.assoc_data->bss->bssid))) {
-                /* not previously set so we may need to recalc */
-                need_ps = sdata->u.mgd.associated && !sdata->u.mgd.dtim_period;
-
-                if (elems->tim && !elems->parse_error) {
-                        const struct ieee80211_tim_ie *tim_ie = elems->tim;
-                        sdata->u.mgd.dtim_period = tim_ie->dtim_period;
-                }
-        }
+        sdata_assert_lock(sdata);
 
         if (elems->ds_params)
                 freq = ieee80211_channel_to_frequency(elems->ds_params[0],
@@ -2871,19 +2836,15 @@ static void ieee80211_rx_bss_info(struct ieee80211_sub_if_data *sdata,
 
         bss = ieee80211_bss_info_update(local, rx_status, mgmt, len, elems,
                                         channel);
-        if (bss)
+        if (bss) {
                 ieee80211_rx_bss_put(local, bss);
+                sdata->vif.bss_conf.beacon_rate = bss->beacon_rate;
+        }
 
         if (!sdata->u.mgd.associated ||
             !ether_addr_equal(mgmt->bssid, sdata->u.mgd.associated->bssid))
                 return;
 
-        if (need_ps) {
-                mutex_lock(&local->iflist_mtx);
-                ieee80211_recalc_ps(local, -1);
-                mutex_unlock(&local->iflist_mtx);
-        }
-
         ieee80211_sta_process_chanswitch(sdata, rx_status->mactime,
                                          elems, true);
 
@@ -2901,7 +2862,7 @@ static void ieee80211_rx_mgmt_probe_resp(struct ieee80211_sub_if_data *sdata,
 
         ifmgd = &sdata->u.mgd;
 
-        ASSERT_MGD_MTX(ifmgd);
+        sdata_assert_lock(sdata);
 
         if (!ether_addr_equal(mgmt->da, sdata->vif.addr))
                 return; /* ignore ProbeResp to foreign address */
@@ -2926,7 +2887,7 @@ static void ieee80211_rx_mgmt_probe_resp(struct ieee80211_sub_if_data *sdata,
                 ifmgd->auth_data->tries = 0;
                 ifmgd->auth_data->timeout = jiffies;
                 ifmgd->auth_data->timeout_started = true;
-                run_again(ifmgd, ifmgd->auth_data->timeout);
+                run_again(sdata, ifmgd->auth_data->timeout);
         }
 }
 
@@ -2951,10 +2912,9 @@ static const u64 care_about_ies =
         (1ULL << WLAN_EID_HT_CAPABILITY) |
         (1ULL << WLAN_EID_HT_OPERATION);
 
-static enum rx_mgmt_action
-ieee80211_rx_mgmt_beacon(struct ieee80211_sub_if_data *sdata,
-                         struct ieee80211_mgmt *mgmt, size_t len,
-                         u8 *deauth_buf, struct ieee80211_rx_status *rx_status)
+static void ieee80211_rx_mgmt_beacon(struct ieee80211_sub_if_data *sdata,
+                                     struct ieee80211_mgmt *mgmt, size_t len,
+                                     struct ieee80211_rx_status *rx_status)
 {
         struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
         struct ieee80211_bss_conf *bss_conf = &sdata->vif.bss_conf;
@@ -2969,24 +2929,25 @@ ieee80211_rx_mgmt_beacon(struct ieee80211_sub_if_data *sdata,
         u8 erp_value = 0;
         u32 ncrc;
         u8 *bssid;
+        u8 deauth_buf[IEEE80211_DEAUTH_FRAME_LEN];
 
-        lockdep_assert_held(&ifmgd->mtx);
+        sdata_assert_lock(sdata);
 
         /* Process beacon from the current BSS */
         baselen = (u8 *) mgmt->u.beacon.variable - (u8 *) mgmt;
         if (baselen > len)
-                return RX_MGMT_NONE;
+                return;
 
         rcu_read_lock();
         chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
         if (!chanctx_conf) {
                 rcu_read_unlock();
-                return RX_MGMT_NONE;
+                return;
         }
 
         if (rx_status->freq != chanctx_conf->def.chan->center_freq) {
                 rcu_read_unlock();
-                return RX_MGMT_NONE;
+                return;
         }
         chan = chanctx_conf->def.chan;
         rcu_read_unlock();
@@ -2997,7 +2958,11 @@ ieee80211_rx_mgmt_beacon(struct ieee80211_sub_if_data *sdata,
                                        len - baselen, false, &elems);
 
                 ieee80211_rx_bss_info(sdata, mgmt, len, rx_status, &elems);
-                ifmgd->assoc_data->have_beacon = true;
+                if (elems.tim && !elems.parse_error) {
+                        const struct ieee80211_tim_ie *tim_ie = elems.tim;
+                        ifmgd->dtim_period = tim_ie->dtim_period;
+                }
+                ifmgd->have_beacon = true;
                 ifmgd->assoc_data->need_beacon = false;
                 if (local->hw.flags & IEEE80211_HW_TIMING_BEACON_ONLY) {
                         sdata->vif.bss_conf.sync_tsf =
@@ -3013,13 +2978,13 @@ ieee80211_rx_mgmt_beacon(struct ieee80211_sub_if_data *sdata,
                 /* continue assoc process */
                 ifmgd->assoc_data->timeout = jiffies;
                 ifmgd->assoc_data->timeout_started = true;
-                run_again(ifmgd, ifmgd->assoc_data->timeout);
-                return RX_MGMT_NONE;
+                run_again(sdata, ifmgd->assoc_data->timeout);
+                return;
         }
 
         if (!ifmgd->associated ||
             !ether_addr_equal(mgmt->bssid, ifmgd->associated->bssid))
-                return RX_MGMT_NONE;
+                return;
         bssid = ifmgd->associated->bssid;
 
         /* Track average RSSI from the Beacon frames of the current AP */
@@ -3165,7 +3130,7 @@ ieee80211_rx_mgmt_beacon(struct ieee80211_sub_if_data *sdata,
         }
 
         if (ncrc == ifmgd->beacon_crc && ifmgd->beacon_crc_valid)
-                return RX_MGMT_NONE;
+                return;
         ifmgd->beacon_crc = ncrc;
         ifmgd->beacon_crc_valid = true;
 
@@ -3179,7 +3144,7 @@ ieee80211_rx_mgmt_beacon(struct ieee80211_sub_if_data *sdata,
          * If we haven't had a beacon before, tell the driver about the
          * DTIM period (and beacon timing if desired) now.
          */
-        if (!bss_conf->dtim_period) {
+        if (!ifmgd->have_beacon) {
                 /* a few bogus AP send dtim_period = 0 or no TIM IE */
                 if (elems.tim)
                         bss_conf->dtim_period = elems.tim->dtim_period ?: 1;
@@ -3198,7 +3163,14 @@ ieee80211_rx_mgmt_beacon(struct ieee80211_sub_if_data *sdata,
                                 sdata->vif.bss_conf.sync_dtim_count = 0;
                 }
 
-                changed |= BSS_CHANGED_DTIM_PERIOD;
+                changed |= BSS_CHANGED_BEACON_INFO;
+                ifmgd->have_beacon = true;
+
+                mutex_lock(&local->iflist_mtx);
+                ieee80211_recalc_ps(local, -1);
+                mutex_unlock(&local->iflist_mtx);
+
+                ieee80211_recalc_ps_vif(sdata);
         }
 
         if (elems.erp_info) {
@@ -3220,7 +3192,9 @@ ieee80211_rx_mgmt_beacon(struct ieee80211_sub_if_data *sdata,
                 ieee80211_set_disassoc(sdata, IEEE80211_STYPE_DEAUTH,
                                        WLAN_REASON_DEAUTH_LEAVING,
                                        true, deauth_buf);
-                return RX_MGMT_CFG80211_TX_DEAUTH;
+                cfg80211_tx_mlme_mgmt(sdata->dev, deauth_buf,
+                                      sizeof(deauth_buf));
+                return;
         }
 
         if (sta && elems.opmode_notif)
@@ -3237,19 +3211,13 @@ ieee80211_rx_mgmt_beacon(struct ieee80211_sub_if_data *sdata,
                                                        elems.pwr_constr_elem);
 
         ieee80211_bss_info_change_notify(sdata, changed);
-
-        return RX_MGMT_NONE;
 }
 
 void ieee80211_sta_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata,
                                   struct sk_buff *skb)
 {
-        struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
         struct ieee80211_rx_status *rx_status;
         struct ieee80211_mgmt *mgmt;
-        struct cfg80211_bss *bss = NULL;
-        enum rx_mgmt_action rma = RX_MGMT_NONE;
-        u8 deauth_buf[IEEE80211_DEAUTH_FRAME_LEN];
         u16 fc;
         struct ieee802_11_elems elems;
         int ies_len;
@@ -3258,28 +3226,27 @@ void ieee80211_sta_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata,
         mgmt = (struct ieee80211_mgmt *) skb->data;
         fc = le16_to_cpu(mgmt->frame_control);
 
-        mutex_lock(&ifmgd->mtx);
+        sdata_lock(sdata);
 
         switch (fc & IEEE80211_FCTL_STYPE) {
         case IEEE80211_STYPE_BEACON:
-                rma = ieee80211_rx_mgmt_beacon(sdata, mgmt, skb->len,
-                                               deauth_buf, rx_status);
+                ieee80211_rx_mgmt_beacon(sdata, mgmt, skb->len, rx_status);
                 break;
         case IEEE80211_STYPE_PROBE_RESP:
                 ieee80211_rx_mgmt_probe_resp(sdata, skb);
                 break;
         case IEEE80211_STYPE_AUTH:
-                rma = ieee80211_rx_mgmt_auth(sdata, mgmt, skb->len);
+                ieee80211_rx_mgmt_auth(sdata, mgmt, skb->len);
                 break;
         case IEEE80211_STYPE_DEAUTH:
-                rma = ieee80211_rx_mgmt_deauth(sdata, mgmt, skb->len);
+                ieee80211_rx_mgmt_deauth(sdata, mgmt, skb->len);
                 break;
         case IEEE80211_STYPE_DISASSOC:
-                rma = ieee80211_rx_mgmt_disassoc(sdata, mgmt, skb->len);
+                ieee80211_rx_mgmt_disassoc(sdata, mgmt, skb->len);
                 break;
         case IEEE80211_STYPE_ASSOC_RESP:
         case IEEE80211_STYPE_REASSOC_RESP:
-                rma = ieee80211_rx_mgmt_assoc_resp(sdata, mgmt, skb->len, &bss);
+                ieee80211_rx_mgmt_assoc_resp(sdata, mgmt, skb->len);
                 break;
         case IEEE80211_STYPE_ACTION:
                 if (mgmt->u.action.category == WLAN_CATEGORY_SPECTRUM_MGMT) {
@@ -3325,34 +3292,7 @@ void ieee80211_sta_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata,
                 }
                 break;
         }
-        mutex_unlock(&ifmgd->mtx);
-
-        switch (rma) {
-        case RX_MGMT_NONE:
-                /* no action */
-                break;
-        case RX_MGMT_CFG80211_DEAUTH:
-                cfg80211_send_deauth(sdata->dev, (u8 *)mgmt, skb->len);
-                break;
-        case RX_MGMT_CFG80211_DISASSOC:
-                cfg80211_send_disassoc(sdata->dev, (u8 *)mgmt, skb->len);
-                break;
-        case RX_MGMT_CFG80211_RX_AUTH:
-                cfg80211_send_rx_auth(sdata->dev, (u8 *)mgmt, skb->len);
-                break;
-        case RX_MGMT_CFG80211_RX_ASSOC:
-                cfg80211_send_rx_assoc(sdata->dev, bss, (u8 *)mgmt, skb->len);
-                break;
-        case RX_MGMT_CFG80211_ASSOC_TIMEOUT:
-                cfg80211_send_assoc_timeout(sdata->dev, mgmt->bssid);
-                break;
-        case RX_MGMT_CFG80211_TX_DEAUTH:
-                cfg80211_send_deauth(sdata->dev, deauth_buf,
-                                     sizeof(deauth_buf));
-                break;
-        default:
-                WARN(1, "unexpected: %d", rma);
-        }
+        sdata_unlock(sdata);
 }
 
 static void ieee80211_sta_timer(unsigned long data)
@@ -3366,20 +3306,13 @@ static void ieee80211_sta_timer(unsigned long data)
 static void ieee80211_sta_connection_lost(struct ieee80211_sub_if_data *sdata,
                                           u8 *bssid, u8 reason, bool tx)
 {
-        struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
         u8 frame_buf[IEEE80211_DEAUTH_FRAME_LEN];
 
         ieee80211_set_disassoc(sdata, IEEE80211_STYPE_DEAUTH, reason,
                                tx, frame_buf);
-        mutex_unlock(&ifmgd->mtx);
 
-        /*
-         * must be outside lock due to cfg80211,
-         * but that's not a problem.
-         */
-        cfg80211_send_deauth(sdata->dev, frame_buf, IEEE80211_DEAUTH_FRAME_LEN);
-
-        mutex_lock(&ifmgd->mtx);
+        cfg80211_tx_mlme_mgmt(sdata->dev, frame_buf,
+                              IEEE80211_DEAUTH_FRAME_LEN);
 }
 
 static int ieee80211_probe_auth(struct ieee80211_sub_if_data *sdata)
@@ -3389,7 +3322,7 @@ static int ieee80211_probe_auth(struct ieee80211_sub_if_data *sdata)
         struct ieee80211_mgd_auth_data *auth_data = ifmgd->auth_data;
         u32 tx_flags = 0;
 
-        lockdep_assert_held(&ifmgd->mtx);
+        sdata_assert_lock(sdata);
 
         if (WARN_ON_ONCE(!auth_data))
                 return -EINVAL;
@@ -3462,7 +3395,7 @@ static int ieee80211_probe_auth(struct ieee80211_sub_if_data *sdata)
         if (tx_flags == 0) {
                 auth_data->timeout = jiffies + IEEE80211_AUTH_TIMEOUT;
                 ifmgd->auth_data->timeout_started = true;
-                run_again(ifmgd, auth_data->timeout);
+                run_again(sdata, auth_data->timeout);
         } else {
                 auth_data->timeout_started = false;
         }
@@ -3475,7 +3408,7 @@ static int ieee80211_do_assoc(struct ieee80211_sub_if_data *sdata)
         struct ieee80211_mgd_assoc_data *assoc_data = sdata->u.mgd.assoc_data;
         struct ieee80211_local *local = sdata->local;
 
-        lockdep_assert_held(&sdata->u.mgd.mtx);
+        sdata_assert_lock(sdata);
 
         assoc_data->tries++;
         if (assoc_data->tries > IEEE80211_ASSOC_MAX_TRIES) {
@@ -3499,7 +3432,7 @@ static int ieee80211_do_assoc(struct ieee80211_sub_if_data *sdata)
         if (!(local->hw.flags & IEEE80211_HW_REPORTS_TX_ACK_STATUS)) {
                 assoc_data->timeout = jiffies + IEEE80211_ASSOC_TIMEOUT;
                 assoc_data->timeout_started = true;
-                run_again(&sdata->u.mgd, assoc_data->timeout);
+                run_again(sdata, assoc_data->timeout);
         } else {
                 assoc_data->timeout_started = false;
         }
@@ -3524,7 +3457,7 @@ void ieee80211_sta_work(struct ieee80211_sub_if_data *sdata)
         struct ieee80211_local *local = sdata->local;
         struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
 
-        mutex_lock(&ifmgd->mtx);
+        sdata_lock(sdata);
 
         if (ifmgd->status_received) {
                 __le16 fc = ifmgd->status_fc;
@@ -3536,7 +3469,7 @@ void ieee80211_sta_work(struct ieee80211_sub_if_data *sdata)
                         if (status_acked) {
                                 ifmgd->auth_data->timeout =
                                         jiffies + IEEE80211_AUTH_TIMEOUT_SHORT;
-                                run_again(ifmgd, ifmgd->auth_data->timeout);
+                                run_again(sdata, ifmgd->auth_data->timeout);
                         } else {
                                 ifmgd->auth_data->timeout = jiffies - 1;
                         }
@@ -3547,7 +3480,7 @@ void ieee80211_sta_work(struct ieee80211_sub_if_data *sdata)
                         if (status_acked) {
                                 ifmgd->assoc_data->timeout =
                                         jiffies + IEEE80211_ASSOC_TIMEOUT_SHORT;
-                                run_again(ifmgd, ifmgd->assoc_data->timeout);
+                                run_again(sdata, ifmgd->assoc_data->timeout);
                         } else {
                                 ifmgd->assoc_data->timeout = jiffies - 1;
                         }
@@ -3570,30 +3503,22 @@ void ieee80211_sta_work(struct ieee80211_sub_if_data *sdata)
 
                         ieee80211_destroy_auth_data(sdata, false);
 
-                        mutex_unlock(&ifmgd->mtx);
-                        cfg80211_send_auth_timeout(sdata->dev, bssid);
-                        mutex_lock(&ifmgd->mtx);
+                        cfg80211_auth_timeout(sdata->dev, bssid);
                 }
         } else if (ifmgd->auth_data && ifmgd->auth_data->timeout_started)
-                run_again(ifmgd, ifmgd->auth_data->timeout);
+                run_again(sdata, ifmgd->auth_data->timeout);
 
         if (ifmgd->assoc_data && ifmgd->assoc_data->timeout_started &&
             time_after(jiffies, ifmgd->assoc_data->timeout)) {
-                if ((ifmgd->assoc_data->need_beacon &&
-                     !ifmgd->assoc_data->have_beacon) ||
+                if ((ifmgd->assoc_data->need_beacon && !ifmgd->have_beacon) ||
                     ieee80211_do_assoc(sdata)) {
-                        u8 bssid[ETH_ALEN];
-
-                        memcpy(bssid, ifmgd->assoc_data->bss->bssid, ETH_ALEN);
+                        struct cfg80211_bss *bss = ifmgd->assoc_data->bss;
 
                         ieee80211_destroy_assoc_data(sdata, false);
-
-                        mutex_unlock(&ifmgd->mtx);
-                        cfg80211_send_assoc_timeout(sdata->dev, bssid);
-                        mutex_lock(&ifmgd->mtx);
+                        cfg80211_assoc_timeout(sdata->dev, bss);
                 }
         } else if (ifmgd->assoc_data && ifmgd->assoc_data->timeout_started)
-                run_again(ifmgd, ifmgd->assoc_data->timeout);
+                run_again(sdata, ifmgd->assoc_data->timeout);
 
         if (ifmgd->flags & (IEEE80211_STA_BEACON_POLL |
                             IEEE80211_STA_CONNECTION_POLL) &&
@@ -3627,7 +3552,7 @@ void ieee80211_sta_work(struct ieee80211_sub_if_data *sdata)
                                         false);
                         }
                 } else if (time_is_after_jiffies(ifmgd->probe_timeout))
-                        run_again(ifmgd, ifmgd->probe_timeout);
+                        run_again(sdata, ifmgd->probe_timeout);
                 else if (local->hw.flags & IEEE80211_HW_REPORTS_TX_ACK_STATUS) {
                         mlme_dbg(sdata,
                                  "Failed to send nullfunc to AP %pM after %dms, disconnecting\n",
@@ -3656,7 +3581,7 @@ void ieee80211_sta_work(struct ieee80211_sub_if_data *sdata)
                 }
         }
 
-        mutex_unlock(&ifmgd->mtx);
+        sdata_unlock(sdata);
 }
 
 static void ieee80211_sta_bcn_mon_timer(unsigned long data)
@@ -3717,9 +3642,9 @@ void ieee80211_sta_restart(struct ieee80211_sub_if_data *sdata)
 {
         struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
 
-        mutex_lock(&ifmgd->mtx);
+        sdata_lock(sdata);
         if (!ifmgd->associated) {
-                mutex_unlock(&ifmgd->mtx);
+                sdata_unlock(sdata);
                 return;
         }
 
@@ -3730,10 +3655,10 @@ void ieee80211_sta_restart(struct ieee80211_sub_if_data *sdata)
                                               ifmgd->associated->bssid,
                                               WLAN_REASON_UNSPECIFIED,
                                               true);
-                mutex_unlock(&ifmgd->mtx);
+                sdata_unlock(sdata);
                 return;
         }
-        mutex_unlock(&ifmgd->mtx);
+        sdata_unlock(sdata);
 }
 #endif
 
@@ -3765,8 +3690,6 @@ void ieee80211_sta_setup_sdata(struct ieee80211_sub_if_data *sdata)
         ifmgd->uapsd_max_sp_len = sdata->local->hw.uapsd_max_sp_len;
         ifmgd->p2p_noa_index = -1;
 
-        mutex_init(&ifmgd->mtx);
-
         if (sdata->local->hw.flags & IEEE80211_HW_SUPPORTS_DYNAMIC_SMPS)
                 ifmgd->req_smps = IEEE80211_SMPS_AUTOMATIC;
         else
@@ -3923,6 +3846,12 @@ static int ieee80211_prep_channel(struct ieee80211_sub_if_data *sdata,
          */
         ret = ieee80211_vif_use_channel(sdata, &chandef,
                                         IEEE80211_CHANCTX_SHARED);
+
+        /* don't downgrade for 5 and 10 MHz channels, though. */
+        if (chandef.width == NL80211_CHAN_WIDTH_5 ||
+            chandef.width == NL80211_CHAN_WIDTH_10)
+                return ret;
+
         while (ret && chandef.width != NL80211_CHAN_WIDTH_20_NOHT) {
                 ifmgd->flags |= chandef_downgrade(&chandef);
                 ret = ieee80211_vif_use_channel(sdata, &chandef,
@@ -4122,8 +4051,6 @@ int ieee80211_mgd_auth(struct ieee80211_sub_if_data *sdata,
 
         /* try to authenticate/probe */
 
-        mutex_lock(&ifmgd->mtx);
-
         if ((ifmgd->auth_data && !ifmgd->auth_data->done) ||
             ifmgd->assoc_data) {
                 err = -EBUSY;
@@ -4143,8 +4070,8 @@ int ieee80211_mgd_auth(struct ieee80211_sub_if_data *sdata,
                                        WLAN_REASON_UNSPECIFIED,
                                        false, frame_buf);
 
-                __cfg80211_send_deauth(sdata->dev, frame_buf,
-                                       sizeof(frame_buf));
+                cfg80211_tx_mlme_mgmt(sdata->dev, frame_buf,
+                                      sizeof(frame_buf));
         }
 
         sdata_info(sdata, "authenticate with %pM\n", req->bss->bssid);
@@ -4161,8 +4088,7 @@ int ieee80211_mgd_auth(struct ieee80211_sub_if_data *sdata,
 
         /* hold our own reference */
         cfg80211_ref_bss(local->hw.wiphy, auth_data->bss);
-        err = 0;
-        goto out_unlock;
+        return 0;
 
  err_clear:
         memset(ifmgd->bssid, 0, ETH_ALEN);
@@ -4170,9 +4096,6 @@ int ieee80211_mgd_auth(struct ieee80211_sub_if_data *sdata,
         ifmgd->auth_data = NULL;
  err_free:
         kfree(auth_data);
- out_unlock:
-        mutex_unlock(&ifmgd->mtx);
-
         return err;
 }
 
@@ -4203,8 +4126,6 @@ int ieee80211_mgd_assoc(struct ieee80211_sub_if_data *sdata,
         assoc_data->ssid_len = ssidie[1];
         rcu_read_unlock();
 
-        mutex_lock(&ifmgd->mtx);
-
         if (ifmgd->associated) {
                 u8 frame_buf[IEEE80211_DEAUTH_FRAME_LEN];
 
@@ -4212,8 +4133,8 @@ int ieee80211_mgd_assoc(struct ieee80211_sub_if_data *sdata,
                                        WLAN_REASON_UNSPECIFIED,
                                        false, frame_buf);
 
-                __cfg80211_send_deauth(sdata->dev, frame_buf,
-                                       sizeof(frame_buf));
+                cfg80211_tx_mlme_mgmt(sdata->dev, frame_buf,
+                                      sizeof(frame_buf));
         }
 
         if (ifmgd->auth_data && !ifmgd->auth_data->done) {
@@ -4360,6 +4281,7 @@ int ieee80211_mgd_assoc(struct ieee80211_sub_if_data *sdata,
 
         ifmgd->assoc_data = assoc_data;
         ifmgd->dtim_period = 0;
+        ifmgd->have_beacon = false;
 
         err = ieee80211_prep_connection(sdata, req->bss, true);
         if (err)
@@ -4391,7 +4313,7 @@ int ieee80211_mgd_assoc(struct ieee80211_sub_if_data *sdata,
                         ifmgd->dtim_period = tim->dtim_period;
                         dtim_count = tim->dtim_count;
                 }
-                assoc_data->have_beacon = true;
+                ifmgd->have_beacon = true;
                 assoc_data->timeout = jiffies;
                 assoc_data->timeout_started = true;
 
@@ -4407,7 +4329,7 @@ int ieee80211_mgd_assoc(struct ieee80211_sub_if_data *sdata,
         }
         rcu_read_unlock();
 
-        run_again(ifmgd, assoc_data->timeout);
+        run_again(sdata, assoc_data->timeout);
 
         if (bss->corrupt_data) {
                 char *corrupt_type = "data";
@@ -4423,17 +4345,13 @@ int ieee80211_mgd_assoc(struct ieee80211_sub_if_data *sdata,
                            corrupt_type);
         }
 
-        err = 0;
-        goto out;
+        return 0;
  err_clear:
         memset(ifmgd->bssid, 0, ETH_ALEN);
         ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BSSID);
         ifmgd->assoc_data = NULL;
  err_free:
         kfree(assoc_data);
- out:
-        mutex_unlock(&ifmgd->mtx);
-
         return err;
 }
 
@@ -4445,8 +4363,6 @@ int ieee80211_mgd_deauth(struct ieee80211_sub_if_data *sdata,
         bool tx = !req->local_state_change;
         bool report_frame = false;
 
-        mutex_lock(&ifmgd->mtx);
-
         sdata_info(sdata,
                    "deauthenticating from %pM by local choice (reason=%d)\n",
                    req->bssid, req->reason_code);
@@ -4458,7 +4374,6 @@ int ieee80211_mgd_deauth(struct ieee80211_sub_if_data *sdata,
                                                req->reason_code, tx,
                                                frame_buf);
                 ieee80211_destroy_auth_data(sdata, false);
-                mutex_unlock(&ifmgd->mtx);
 
                 report_frame = true;
                 goto out;
@@ -4470,12 +4385,11 @@ int ieee80211_mgd_deauth(struct ieee80211_sub_if_data *sdata,
                                        req->reason_code, tx, frame_buf);
                 report_frame = true;
         }
-        mutex_unlock(&ifmgd->mtx);
 
  out:
         if (report_frame)
-                __cfg80211_send_deauth(sdata->dev, frame_buf,
-                                       IEEE80211_DEAUTH_FRAME_LEN);
+                cfg80211_tx_mlme_mgmt(sdata->dev, frame_buf,
+                                      IEEE80211_DEAUTH_FRAME_LEN);
 
         return 0;
 }
@@ -4487,18 +4401,14 @@ int ieee80211_mgd_disassoc(struct ieee80211_sub_if_data *sdata,
         u8 bssid[ETH_ALEN];
         u8 frame_buf[IEEE80211_DEAUTH_FRAME_LEN];
 
-        mutex_lock(&ifmgd->mtx);
-
         /*
          * cfg80211 should catch this ... but it's racy since
          * we can receive a disassoc frame, process it, hand it
          * to cfg80211 while that's in a locked section already
          * trying to tell us that the user wants to disconnect.
          */
-        if (ifmgd->associated != req->bss) {
-                mutex_unlock(&ifmgd->mtx);
+        if (ifmgd->associated != req->bss)
                 return -ENOLINK;
-        }
 
         sdata_info(sdata,
                    "disassociating from %pM by local choice (reason=%d)\n",
@@ -4508,10 +4418,9 @@ int ieee80211_mgd_disassoc(struct ieee80211_sub_if_data *sdata,
         ieee80211_set_disassoc(sdata, IEEE80211_STYPE_DISASSOC,
                                req->reason_code, !req->local_state_change,
                                frame_buf);
-        mutex_unlock(&ifmgd->mtx);
 
-        __cfg80211_send_disassoc(sdata->dev, frame_buf,
-                                 IEEE80211_DEAUTH_FRAME_LEN);
+        cfg80211_tx_mlme_mgmt(sdata->dev, frame_buf,
+                              IEEE80211_DEAUTH_FRAME_LEN);
 
         return 0;
 }
@@ -4531,13 +4440,16 @@ void ieee80211_mgd_stop(struct ieee80211_sub_if_data *sdata)
         cancel_work_sync(&ifmgd->csa_connection_drop_work);
         cancel_work_sync(&ifmgd->chswitch_work);
 
-        mutex_lock(&ifmgd->mtx);
-        if (ifmgd->assoc_data)
+        sdata_lock(sdata);
+        if (ifmgd->assoc_data) {
+                struct cfg80211_bss *bss = ifmgd->assoc_data->bss;
                 ieee80211_destroy_assoc_data(sdata, false);
+                cfg80211_assoc_timeout(sdata->dev, bss);
+        }
         if (ifmgd->auth_data)
                 ieee80211_destroy_auth_data(sdata, false);
         del_timer_sync(&ifmgd->timer);
-        mutex_unlock(&ifmgd->mtx);
+        sdata_unlock(sdata);
 }
 
 void ieee80211_cqm_rssi_notify(struct ieee80211_vif *vif,
diff --git a/net/mac80211/rate.c b/net/mac80211/rate.c
index a02bef35b134..30d58d2d13e2 100644
--- a/net/mac80211/rate.c
+++ b/net/mac80211/rate.c
@@ -397,8 +397,14 @@ static void rate_idx_match_mask(struct ieee80211_tx_rate *rate,
                         return;
 
                 /* if HT BSS, and we handle a data frame, also try HT rates */
-                if (chan_width == NL80211_CHAN_WIDTH_20_NOHT)
+                switch (chan_width) {
+                case NL80211_CHAN_WIDTH_20_NOHT:
+                case NL80211_CHAN_WIDTH_5:
+                case NL80211_CHAN_WIDTH_10:
                         return;
+                default:
+                        break;
+                }
 
                 alt_rate.idx = 0;
                 /* keep protection flags */
diff --git a/net/mac80211/rx.c b/net/mac80211/rx.c
index 8e2952620256..23dbcfc69b3b 100644
--- a/net/mac80211/rx.c
+++ b/net/mac80211/rx.c
@@ -258,6 +258,8 @@ ieee80211_add_rx_radiotap_header(struct ieee80211_local *local,
         pos += 2;
 
         if (status->flag & RX_FLAG_HT) {
+                unsigned int stbc;
+
                 rthdr->it_present |= cpu_to_le32(1 << IEEE80211_RADIOTAP_MCS);
                 *pos++ = local->hw.radiotap_mcs_details;
                 *pos = 0;
@@ -267,6 +269,8 @@ ieee80211_add_rx_radiotap_header(struct ieee80211_local *local,
                         *pos |= IEEE80211_RADIOTAP_MCS_BW_40;
                 if (status->flag & RX_FLAG_HT_GF)
                         *pos |= IEEE80211_RADIOTAP_MCS_FMT_GF;
+                stbc = (status->flag & RX_FLAG_STBC_MASK) >> RX_FLAG_STBC_SHIFT;
+                *pos |= stbc << IEEE80211_RADIOTAP_MCS_STBC_SHIFT;
                 pos++;
                 *pos++ = status->rate_idx;
         }
@@ -1372,6 +1376,7 @@ ieee80211_rx_h_sta_process(struct ieee80211_rx_data *rx)
         struct sk_buff *skb = rx->skb;
         struct ieee80211_rx_status *status = IEEE80211_SKB_RXCB(skb);
         struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
+        int i;
 
         if (!sta)
                 return RX_CONTINUE;
@@ -1422,6 +1427,19 @@ ieee80211_rx_h_sta_process(struct ieee80211_rx_data *rx)
                 ewma_add(&sta->avg_signal, -status->signal);
         }
 
+        if (status->chains) {
+                sta->chains = status->chains;
+                for (i = 0; i < ARRAY_SIZE(status->chain_signal); i++) {
+                        int signal = status->chain_signal[i];
+
+                        if (!(status->chains & BIT(i)))
+                                continue;
+
+                        sta->chain_signal_last[i] = signal;
+                        ewma_add(&sta->chain_signal_avg[i], -signal);
+                }
+        }
+
         /*
          * Change STA power saving mode only at the end of a frame
          * exchange sequence.
@@ -1608,7 +1626,7 @@ ieee80211_rx_h_defragment(struct ieee80211_rx_data *rx)
                         entry->ccmp = 1;
                         memcpy(entry->last_pn,
                                rx->key->u.ccmp.rx_pn[queue],
-                               CCMP_PN_LEN);
+                               IEEE80211_CCMP_PN_LEN);
                 }
                 return RX_QUEUED;
         }
@@ -1627,21 +1645,21 @@ ieee80211_rx_h_defragment(struct ieee80211_rx_data *rx)
          * (IEEE 802.11i, 8.3.3.4.5) */
         if (entry->ccmp) {
                 int i;
-                u8 pn[CCMP_PN_LEN], *rpn;
+                u8 pn[IEEE80211_CCMP_PN_LEN], *rpn;
                 int queue;
                 if (!rx->key || rx->key->conf.cipher != WLAN_CIPHER_SUITE_CCMP)
                         return RX_DROP_UNUSABLE;
-                memcpy(pn, entry->last_pn, CCMP_PN_LEN);
-                for (i = CCMP_PN_LEN - 1; i >= 0; i--) {
+                memcpy(pn, entry->last_pn, IEEE80211_CCMP_PN_LEN);
+                for (i = IEEE80211_CCMP_PN_LEN - 1; i >= 0; i--) {
                         pn[i]++;
                         if (pn[i])
                                 break;
                 }
                 queue = rx->security_idx;
                 rpn = rx->key->u.ccmp.rx_pn[queue];
-                if (memcmp(pn, rpn, CCMP_PN_LEN))
+                if (memcmp(pn, rpn, IEEE80211_CCMP_PN_LEN))
                         return RX_DROP_UNUSABLE;
-                memcpy(entry->last_pn, pn, CCMP_PN_LEN);
+                memcpy(entry->last_pn, pn, IEEE80211_CCMP_PN_LEN);
         }
 
         skb_pull(rx->skb, ieee80211_hdrlen(fc));
@@ -1729,27 +1747,21 @@ static int ieee80211_drop_unencrypted_mgmt(struct ieee80211_rx_data *rx)
                 if (unlikely(!ieee80211_has_protected(fc) &&
                              ieee80211_is_unicast_robust_mgmt_frame(rx->skb) &&
                              rx->key)) {
-                        if (ieee80211_is_deauth(fc))
-                                cfg80211_send_unprot_deauth(rx->sdata->dev,
-                                                            rx->skb->data,
-                                                            rx->skb->len);
-                        else if (ieee80211_is_disassoc(fc))
-                                cfg80211_send_unprot_disassoc(rx->sdata->dev,
-                                                              rx->skb->data,
-                                                              rx->skb->len);
+                        if (ieee80211_is_deauth(fc) ||
+                            ieee80211_is_disassoc(fc))
+                                cfg80211_rx_unprot_mlme_mgmt(rx->sdata->dev,
+                                                             rx->skb->data,
+                                                             rx->skb->len);
                         return -EACCES;
                 }
                 /* BIP does not use Protected field, so need to check MMIE */
                 if (unlikely(ieee80211_is_multicast_robust_mgmt_frame(rx->skb) &&
                              ieee80211_get_mmie_keyidx(rx->skb) < 0)) {
-                        if (ieee80211_is_deauth(fc))
-                                cfg80211_send_unprot_deauth(rx->sdata->dev,
-                                                            rx->skb->data,
-                                                            rx->skb->len);
-                        else if (ieee80211_is_disassoc(fc))
-                                cfg80211_send_unprot_disassoc(rx->sdata->dev,
-                                                              rx->skb->data,
-                                                              rx->skb->len);
+                        if (ieee80211_is_deauth(fc) ||
+                            ieee80211_is_disassoc(fc))
+                                cfg80211_rx_unprot_mlme_mgmt(rx->sdata->dev,
+                                                             rx->skb->data,
+                                                             rx->skb->len);
                         return -EACCES;
                 }
                 /*
diff --git a/net/mac80211/scan.c b/net/mac80211/scan.c
index 99b103921a4b..1b122a79b0d8 100644
--- a/net/mac80211/scan.c
+++ b/net/mac80211/scan.c
@@ -140,6 +140,15 @@ ieee80211_bss_info_update(struct ieee80211_local *local,
                         bss->valid_data |= IEEE80211_BSS_VALID_WMM;
         }
 
+        if (beacon) {
+                struct ieee80211_supported_band *sband =
+                        local->hw.wiphy->bands[rx_status->band];
+                if (!(rx_status->flag & RX_FLAG_HT) &&
+                    !(rx_status->flag & RX_FLAG_VHT))
+                        bss->beacon_rate =
+                                &sband->bitrates[rx_status->rate_idx];
+        }
+
         return bss;
 }
 
diff --git a/net/mac80211/sta_info.c b/net/mac80211/sta_info.c
index 11216bc13b27..aeb967a0aeed 100644
--- a/net/mac80211/sta_info.c
+++ b/net/mac80211/sta_info.c
@@ -149,6 +149,7 @@ static void cleanup_single_sta(struct sta_info *sta)
          * directly by station destruction.
          */
         for (i = 0; i < IEEE80211_NUM_TIDS; i++) {
+                kfree(sta->ampdu_mlme.tid_start_tx[i]);
                 tid_tx = rcu_dereference_raw(sta->ampdu_mlme.tid_tx[i]);
                 if (!tid_tx)
                         continue;
@@ -346,6 +347,7 @@ struct sta_info *sta_info_alloc(struct ieee80211_sub_if_data *sdata,
         if (ieee80211_vif_is_mesh(&sdata->vif) &&
             !sdata->u.mesh.user_mpm)
                 init_timer(&sta->plink_timer);
+        sta->nonpeer_pm = NL80211_MESH_POWER_ACTIVE;
 #endif
 
         memcpy(sta->sta.addr, addr, ETH_ALEN);
@@ -358,6 +360,8 @@ struct sta_info *sta_info_alloc(struct ieee80211_sub_if_data *sdata,
         do_posix_clock_monotonic_gettime(&uptime);
         sta->last_connected = uptime.tv_sec;
         ewma_init(&sta->avg_signal, 1024, 8);
+        for (i = 0; i < ARRAY_SIZE(sta->chain_signal_avg); i++)
+                ewma_init(&sta->chain_signal_avg[i], 1024, 8);
 
         if (sta_prepare_rate_control(local, sta, gfp)) {
                 kfree(sta);
@@ -1130,6 +1134,7 @@ static void ieee80211_send_null_response(struct ieee80211_sub_if_data *sdata,
          * ends the poll/service period.
          */
         info->flags |= IEEE80211_TX_CTL_NO_PS_BUFFER |
+                       IEEE80211_TX_CTL_PS_RESPONSE |
                        IEEE80211_TX_STATUS_EOSP |
                        IEEE80211_TX_CTL_REQ_TX_STATUS;
 
@@ -1267,7 +1272,8 @@ ieee80211_sta_ps_deliver_response(struct sta_info *sta,
                          * STA may still remain is PS mode after this frame
                          * exchange.
                          */
-                        info->flags |= IEEE80211_TX_CTL_NO_PS_BUFFER;
+                        info->flags |= IEEE80211_TX_CTL_NO_PS_BUFFER |
+                                       IEEE80211_TX_CTL_PS_RESPONSE;
 
                         /*
                          * Use MoreData flag to indicate whether there are
diff --git a/net/mac80211/sta_info.h b/net/mac80211/sta_info.h
index adc30045f99e..4208dbd5861f 100644
--- a/net/mac80211/sta_info.h
+++ b/net/mac80211/sta_info.h
@@ -203,6 +203,7 @@ struct tid_ampdu_rx {
  *      driver requested to close until the work for it runs
  * @mtx: mutex to protect all TX data (except non-NULL assignments
  *      to tid_tx[idx], which are protected by the sta spinlock)
+ *      tid_start_tx is also protected by sta->lock.
  */
 struct sta_ampdu_mlme {
         struct mutex mtx;
@@ -297,6 +298,9 @@ struct sta_ampdu_mlme {
  * @rcu_head: RCU head used for freeing this station struct
  * @cur_max_bandwidth: maximum bandwidth to use for TX to the station,
  *      taken from HT/VHT capabilities or VHT operating mode notification
+ * @chains: chains ever used for RX from this station
+ * @chain_signal_last: last signal (per chain)
+ * @chain_signal_avg: signal average (per chain)
  */
 struct sta_info {
         /* General information, mostly static */
@@ -344,6 +348,11 @@ struct sta_info {
         int last_signal;
         struct ewma avg_signal;
         int last_ack_signal;
+
+        u8 chains;
+        s8 chain_signal_last[IEEE80211_MAX_CHAINS];
+        struct ewma chain_signal_avg[IEEE80211_MAX_CHAINS];
+
         /* Plus 1 for non-QoS frames */
         __le16 last_seq_ctrl[IEEE80211_NUM_TIDS + 1];
 
diff --git a/net/mac80211/tx.c b/net/mac80211/tx.c
index 9972e07a2f96..4105d0ca963e 100644
--- a/net/mac80211/tx.c
+++ b/net/mac80211/tx.c
@@ -398,13 +398,14 @@ ieee80211_tx_h_multicast_ps_buf(struct ieee80211_tx_data *tx)
         if (ieee80211_has_order(hdr->frame_control))
                 return TX_CONTINUE;
 
+        if (tx->local->hw.flags & IEEE80211_HW_QUEUE_CONTROL)
+                info->hw_queue = tx->sdata->vif.cab_queue;
+
         /* no stations in PS mode */
         if (!atomic_read(&ps->num_sta_ps))
                 return TX_CONTINUE;
 
         info->flags |= IEEE80211_TX_CTL_SEND_AFTER_DTIM;
-        if (tx->local->hw.flags & IEEE80211_HW_QUEUE_CONTROL)
-                info->hw_queue = tx->sdata->vif.cab_queue;
 
         /* device releases frame after DTIM beacon */
         if (!(tx->local->hw.flags & IEEE80211_HW_HOST_BROADCAST_PS_BUFFERING))
@@ -1789,12 +1790,6 @@ netdev_tx_t ieee80211_subif_start_xmit(struct sk_buff *skb,
                 break;
 #ifdef CONFIG_MAC80211_MESH
         case NL80211_IFTYPE_MESH_POINT:
-                if (!sdata->u.mesh.mshcfg.dot11MeshTTL) {
-                        /* Do not send frames with mesh_ttl == 0 */
-                        sdata->u.mesh.mshstats.dropped_frames_ttl++;
-                        goto fail_rcu;
-                }
-
                 if (!is_multicast_ether_addr(skb->data)) {
                         struct sta_info *next_hop;
                         bool mpp_lookup = true;
diff --git a/net/mac80211/util.c b/net/mac80211/util.c
index 72e6292955bb..22654452a561 100644
--- a/net/mac80211/util.c
+++ b/net/mac80211/util.c
@@ -560,6 +560,9 @@ void ieee80211_iterate_active_interfaces(
         list_for_each_entry(sdata, &local->interfaces, list) {
                 switch (sdata->vif.type) {
                 case NL80211_IFTYPE_MONITOR:
+                        if (!(sdata->u.mntr_flags & MONITOR_FLAG_ACTIVE))
+                                continue;
+                        break;
                 case NL80211_IFTYPE_AP_VLAN:
                         continue;
                 default:
@@ -598,6 +601,9 @@ void ieee80211_iterate_active_interfaces_atomic(
         list_for_each_entry_rcu(sdata, &local->interfaces, list) {
                 switch (sdata->vif.type) {
                 case NL80211_IFTYPE_MONITOR:
+                        if (!(sdata->u.mntr_flags & MONITOR_FLAG_ACTIVE))
+                                continue;
+                        break;
                 case NL80211_IFTYPE_AP_VLAN:
                         continue;
                 default:
@@ -1072,32 +1078,6 @@ void ieee80211_sta_def_wmm_params(struct ieee80211_sub_if_data *sdata,
         ieee80211_set_wmm_default(sdata, true);
 }
 
-u32 ieee80211_mandatory_rates(struct ieee80211_local *local,
-                              enum ieee80211_band band)
-{
-        struct ieee80211_supported_band *sband;
-        struct ieee80211_rate *bitrates;
-        u32 mandatory_rates;
-        enum ieee80211_rate_flags mandatory_flag;
-        int i;
-
-        sband = local->hw.wiphy->bands[band];
-        if (WARN_ON(!sband))
-                return 1;
-
-        if (band == IEEE80211_BAND_2GHZ)
-                mandatory_flag = IEEE80211_RATE_MANDATORY_B;
-        else
-                mandatory_flag = IEEE80211_RATE_MANDATORY_A;
-
-        bitrates = sband->bitrates;
-        mandatory_rates = 0;
-        for (i = 0; i < sband->n_bitrates; i++)
-                if (bitrates[i].flags & mandatory_flag)
-                        mandatory_rates |= BIT(i);
-        return mandatory_rates;
-}
-
 void ieee80211_send_auth(struct ieee80211_sub_if_data *sdata,
                          u16 transaction, u16 auth_alg, u16 status,
                          const u8 *extra, size_t extra_len, const u8 *da,
@@ -1604,12 +1584,13 @@ int ieee80211_reconfig(struct ieee80211_local *local)
                                    BSS_CHANGED_ARP_FILTER |
                                    BSS_CHANGED_PS;
 
-                        if (sdata->u.mgd.dtim_period)
-                                changed |= BSS_CHANGED_DTIM_PERIOD;
+                        /* Re-send beacon info report to the driver */
+                        if (sdata->u.mgd.have_beacon)
+                                changed |= BSS_CHANGED_BEACON_INFO;
 
-                        mutex_lock(&sdata->u.mgd.mtx);
+                        sdata_lock(sdata);
                         ieee80211_bss_info_change_notify(sdata, changed);
-                        mutex_unlock(&sdata->u.mgd.mtx);
+                        sdata_unlock(sdata);
                         break;
                 case NL80211_IFTYPE_ADHOC:
                         changed |= BSS_CHANGED_IBSS;
diff --git a/net/mac80211/vht.c b/net/mac80211/vht.c
index 171344d4eb7c..97c289414e32 100644
--- a/net/mac80211/vht.c
+++ b/net/mac80211/vht.c
@@ -396,7 +396,7 @@ void ieee80211_vht_handle_opmode(struct ieee80211_sub_if_data *sdata,
         new_bw = ieee80211_sta_cur_vht_bw(sta);
         if (new_bw != sta->sta.bandwidth) {
                 sta->sta.bandwidth = new_bw;
-                changed |= IEEE80211_RC_NSS_CHANGED;
+                changed |= IEEE80211_RC_BW_CHANGED;
         }
 
  change:
diff --git a/net/mac80211/wep.c b/net/mac80211/wep.c
index c04d401dae92..6ee2b5863572 100644
--- a/net/mac80211/wep.c
+++ b/net/mac80211/wep.c
@@ -28,7 +28,7 @@
 int ieee80211_wep_init(struct ieee80211_local *local)
 {
         /* start WEP IV from a random value */
-        get_random_bytes(&local->wep_iv, WEP_IV_LEN);
+        get_random_bytes(&local->wep_iv, IEEE80211_WEP_IV_LEN);
 
         local->wep_tx_tfm = crypto_alloc_cipher("arc4", 0, CRYPTO_ALG_ASYNC);
         if (IS_ERR(local->wep_tx_tfm)) {
@@ -98,20 +98,21 @@ static u8 *ieee80211_wep_add_iv(struct ieee80211_local *local,
 
         hdr->frame_control |= cpu_to_le16(IEEE80211_FCTL_PROTECTED);
 
-        if (WARN_ON(skb_tailroom(skb) < WEP_ICV_LEN ||
-                    skb_headroom(skb) < WEP_IV_LEN))
+        if (WARN_ON(skb_tailroom(skb) < IEEE80211_WEP_ICV_LEN ||
+                    skb_headroom(skb) < IEEE80211_WEP_IV_LEN))
                 return NULL;
 
         hdrlen = ieee80211_hdrlen(hdr->frame_control);
-        newhdr = skb_push(skb, WEP_IV_LEN);
-        memmove(newhdr, newhdr + WEP_IV_LEN, hdrlen);
+        newhdr = skb_push(skb, IEEE80211_WEP_IV_LEN);
+        memmove(newhdr, newhdr + IEEE80211_WEP_IV_LEN, hdrlen);
 
         /* the HW only needs room for the IV, but not the actual IV */
         if (info->control.hw_key &&
             (info->control.hw_key->flags & IEEE80211_KEY_FLAG_PUT_IV_SPACE))
                 return newhdr + hdrlen;
 
-        skb_set_network_header(skb, skb_network_offset(skb) + WEP_IV_LEN);
+        skb_set_network_header(skb, skb_network_offset(skb) +
+                                    IEEE80211_WEP_IV_LEN);
         ieee80211_wep_get_iv(local, keylen, keyidx, newhdr + hdrlen);
         return newhdr + hdrlen;
 }
@@ -125,8 +126,8 @@ static void ieee80211_wep_remove_iv(struct ieee80211_local *local,
         unsigned int hdrlen;
 
         hdrlen = ieee80211_hdrlen(hdr->frame_control);
-        memmove(skb->data + WEP_IV_LEN, skb->data, hdrlen);
-        skb_pull(skb, WEP_IV_LEN);
+        memmove(skb->data + IEEE80211_WEP_IV_LEN, skb->data, hdrlen);
+        skb_pull(skb, IEEE80211_WEP_IV_LEN);
 }
 
 
@@ -146,7 +147,7 @@ int ieee80211_wep_encrypt_data(struct crypto_cipher *tfm, u8 *rc4key,
         put_unaligned(icv, (__le32 *)(data + data_len));
 
         crypto_cipher_setkey(tfm, rc4key, klen);
-        for (i = 0; i < data_len + WEP_ICV_LEN; i++)
+        for (i = 0; i < data_len + IEEE80211_WEP_ICV_LEN; i++)
                 crypto_cipher_encrypt_one(tfm, data + i, data + i);
 
         return 0;
@@ -172,7 +173,7 @@ int ieee80211_wep_encrypt(struct ieee80211_local *local,
         if (!iv)
                 return -1;
 
-        len = skb->len - (iv + WEP_IV_LEN - skb->data);
+        len = skb->len - (iv + IEEE80211_WEP_IV_LEN - skb->data);
 
         /* Prepend 24-bit IV to RC4 key */
         memcpy(rc4key, iv, 3);
@@ -181,10 +182,10 @@ int ieee80211_wep_encrypt(struct ieee80211_local *local,
         memcpy(rc4key + 3, key, keylen);
 
         /* Add room for ICV */
-        skb_put(skb, WEP_ICV_LEN);
+        skb_put(skb, IEEE80211_WEP_ICV_LEN);
 
         return ieee80211_wep_encrypt_data(local->wep_tx_tfm, rc4key, keylen + 3,
-                                          iv + WEP_IV_LEN, len);
+                                          iv + IEEE80211_WEP_IV_LEN, len);
 }
 
 
@@ -201,11 +202,11 @@ int ieee80211_wep_decrypt_data(struct crypto_cipher *tfm, u8 *rc4key,
                 return -1;
 
         crypto_cipher_setkey(tfm, rc4key, klen);
-        for (i = 0; i < data_len + WEP_ICV_LEN; i++)
+        for (i = 0; i < data_len + IEEE80211_WEP_ICV_LEN; i++)
                 crypto_cipher_decrypt_one(tfm, data + i, data + i);
 
         crc = cpu_to_le32(~crc32_le(~0, data, data_len));
-        if (memcmp(&crc, data + data_len, WEP_ICV_LEN) != 0)
+        if (memcmp(&crc, data + data_len, IEEE80211_WEP_ICV_LEN) != 0)
                 /* ICV mismatch */
                 return -1;
 
@@ -237,10 +238,10 @@ static int ieee80211_wep_decrypt(struct ieee80211_local *local,
                 return -1;
 
         hdrlen = ieee80211_hdrlen(hdr->frame_control);
-        if (skb->len < hdrlen + WEP_IV_LEN + WEP_ICV_LEN)
+        if (skb->len < hdrlen + IEEE80211_WEP_IV_LEN + IEEE80211_WEP_ICV_LEN)
                 return -1;
 
-        len = skb->len - hdrlen - WEP_IV_LEN - WEP_ICV_LEN;
+        len = skb->len - hdrlen - IEEE80211_WEP_IV_LEN - IEEE80211_WEP_ICV_LEN;
 
         keyidx = skb->data[hdrlen + 3] >> 6;
 
@@ -256,16 +257,16 @@ static int ieee80211_wep_decrypt(struct ieee80211_local *local,
         memcpy(rc4key + 3, key->conf.key, key->conf.keylen);
 
         if (ieee80211_wep_decrypt_data(local->wep_rx_tfm, rc4key, klen,
-                                       skb->data + hdrlen + WEP_IV_LEN,
-                                       len))
+                                       skb->data + hdrlen +
+                                       IEEE80211_WEP_IV_LEN, len))
                 ret = -1;
 
         /* Trim ICV */
-        skb_trim(skb, skb->len - WEP_ICV_LEN);
+        skb_trim(skb, skb->len - IEEE80211_WEP_ICV_LEN);
 
         /* Remove IV */
-        memmove(skb->data + WEP_IV_LEN, skb->data, hdrlen);
-        skb_pull(skb, WEP_IV_LEN);
+        memmove(skb->data + IEEE80211_WEP_IV_LEN, skb->data, hdrlen);
+        skb_pull(skb, IEEE80211_WEP_IV_LEN);
 
         return ret;
 }
@@ -305,13 +306,14 @@ ieee80211_crypto_wep_decrypt(struct ieee80211_rx_data *rx)
                 if (ieee80211_wep_decrypt(rx->local, rx->skb, rx->key))
                         return RX_DROP_UNUSABLE;
         } else if (!(status->flag & RX_FLAG_IV_STRIPPED)) {
-                if (!pskb_may_pull(rx->skb, ieee80211_hdrlen(fc) + WEP_IV_LEN))
+                if (!pskb_may_pull(rx->skb, ieee80211_hdrlen(fc) +
+                                            IEEE80211_WEP_IV_LEN))
                         return RX_DROP_UNUSABLE;
                 if (rx->sta && ieee80211_wep_is_weak_iv(rx->skb, rx->key))
                         rx->sta->wep_weak_iv_count++;
                 ieee80211_wep_remove_iv(rx->local, rx->skb, rx->key);
                 /* remove ICV */
-                if (pskb_trim(rx->skb, rx->skb->len - WEP_ICV_LEN))
+                if (pskb_trim(rx->skb, rx->skb->len - IEEE80211_WEP_ICV_LEN))
                         return RX_DROP_UNUSABLE;
         }
 
diff --git a/net/mac80211/wpa.c b/net/mac80211/wpa.c
index c7c6d644486f..c9edfcb7a13b 100644
--- a/net/mac80211/wpa.c
+++ b/net/mac80211/wpa.c
@@ -62,10 +62,10 @@ ieee80211_tx_h_michael_mic_add(struct ieee80211_tx_data *tx)
 
         tail = MICHAEL_MIC_LEN;
         if (!info->control.hw_key)
-                tail += TKIP_ICV_LEN;
+                tail += IEEE80211_TKIP_ICV_LEN;
 
         if (WARN_ON(skb_tailroom(skb) < tail ||
-                    skb_headroom(skb) < TKIP_IV_LEN))
+                    skb_headroom(skb) < IEEE80211_TKIP_IV_LEN))
                 return TX_DROP;
 
         key = &tx->key->conf.key[NL80211_TKIP_DATA_OFFSET_TX_MIC_KEY];
@@ -198,15 +198,16 @@ static int tkip_encrypt_skb(struct ieee80211_tx_data *tx, struct sk_buff *skb)
         if (info->control.hw_key)
                 tail = 0;
         else
-                tail = TKIP_ICV_LEN;
+                tail = IEEE80211_TKIP_ICV_LEN;
 
         if (WARN_ON(skb_tailroom(skb) < tail ||
-                    skb_headroom(skb) < TKIP_IV_LEN))
+                    skb_headroom(skb) < IEEE80211_TKIP_IV_LEN))
                 return -1;
 
-        pos = skb_push(skb, TKIP_IV_LEN);
-        memmove(pos, pos + TKIP_IV_LEN, hdrlen);
-        skb_set_network_header(skb, skb_network_offset(skb) + TKIP_IV_LEN);
+        pos = skb_push(skb, IEEE80211_TKIP_IV_LEN);
+        memmove(pos, pos + IEEE80211_TKIP_IV_LEN, hdrlen);
+        skb_set_network_header(skb, skb_network_offset(skb) +
+                                    IEEE80211_TKIP_IV_LEN);
         pos += hdrlen;
 
         /* the HW only needs room for the IV, but not the actual IV */
@@ -227,7 +228,7 @@ static int tkip_encrypt_skb(struct ieee80211_tx_data *tx, struct sk_buff *skb)
                 return 0;
 
         /* Add room for ICV */
-        skb_put(skb, TKIP_ICV_LEN);
+        skb_put(skb, IEEE80211_TKIP_ICV_LEN);
 
         return ieee80211_tkip_encrypt_data(tx->local->wep_tx_tfm,
                                            key, skb, pos, len);
@@ -290,11 +291,11 @@ ieee80211_crypto_tkip_decrypt(struct ieee80211_rx_data *rx)
                 return RX_DROP_UNUSABLE;
 
         /* Trim ICV */
-        skb_trim(skb, skb->len - TKIP_ICV_LEN);
+        skb_trim(skb, skb->len - IEEE80211_TKIP_ICV_LEN);
 
         /* Remove IV */
-        memmove(skb->data + TKIP_IV_LEN, skb->data, hdrlen);
-        skb_pull(skb, TKIP_IV_LEN);
+        memmove(skb->data + IEEE80211_TKIP_IV_LEN, skb->data, hdrlen);
+        skb_pull(skb, IEEE80211_TKIP_IV_LEN);
 
         return RX_CONTINUE;
 }
@@ -337,9 +338,9 @@ static void ccmp_special_blocks(struct sk_buff *skb, u8 *pn, u8 *scratch,
         else
                 qos_tid = 0;
 
-        data_len = skb->len - hdrlen - CCMP_HDR_LEN;
+        data_len = skb->len - hdrlen - IEEE80211_CCMP_HDR_LEN;
         if (encrypted)
-                data_len -= CCMP_MIC_LEN;
+                data_len -= IEEE80211_CCMP_MIC_LEN;
 
         /* First block, b_0 */
         b_0[0] = 0x59; /* flags: Adata: 1, M: 011, L: 001 */
@@ -348,7 +349,7 @@ static void ccmp_special_blocks(struct sk_buff *skb, u8 *pn, u8 *scratch,
          */
         b_0[1] = qos_tid | (mgmt << 4);
         memcpy(&b_0[2], hdr->addr2, ETH_ALEN);
-        memcpy(&b_0[8], pn, CCMP_PN_LEN);
+        memcpy(&b_0[8], pn, IEEE80211_CCMP_PN_LEN);
         /* l(m) */
         put_unaligned_be16(data_len, &b_0[14]);
 
@@ -424,15 +425,16 @@ static int ccmp_encrypt_skb(struct ieee80211_tx_data *tx, struct sk_buff *skb)
         if (info->control.hw_key)
                 tail = 0;
         else
-                tail = CCMP_MIC_LEN;
+                tail = IEEE80211_CCMP_MIC_LEN;
 
         if (WARN_ON(skb_tailroom(skb) < tail ||
-                    skb_headroom(skb) < CCMP_HDR_LEN))
+                    skb_headroom(skb) < IEEE80211_CCMP_HDR_LEN))
                 return -1;
 
-        pos = skb_push(skb, CCMP_HDR_LEN);
-        memmove(pos, pos + CCMP_HDR_LEN, hdrlen);
-        skb_set_network_header(skb, skb_network_offset(skb) + CCMP_HDR_LEN);
+        pos = skb_push(skb, IEEE80211_CCMP_HDR_LEN);
+        memmove(pos, pos + IEEE80211_CCMP_HDR_LEN, hdrlen);
+        skb_set_network_header(skb, skb_network_offset(skb) +
+                                    IEEE80211_CCMP_HDR_LEN);
 
         /* the HW only needs room for the IV, but not the actual IV */
         if (info->control.hw_key &&
@@ -457,10 +459,10 @@ static int ccmp_encrypt_skb(struct ieee80211_tx_data *tx, struct sk_buff *skb)
         if (info->control.hw_key)
                 return 0;
 
-        pos += CCMP_HDR_LEN;
+        pos += IEEE80211_CCMP_HDR_LEN;
         ccmp_special_blocks(skb, pn, scratch, 0);
         ieee80211_aes_ccm_encrypt(key->u.ccmp.tfm, scratch, pos, len,
-                                  pos, skb_put(skb, CCMP_MIC_LEN));
+                                  pos, skb_put(skb, IEEE80211_CCMP_MIC_LEN));
 
         return 0;
 }
@@ -490,7 +492,7 @@ ieee80211_crypto_ccmp_decrypt(struct ieee80211_rx_data *rx)
         struct ieee80211_key *key = rx->key;
         struct sk_buff *skb = rx->skb;
         struct ieee80211_rx_status *status = IEEE80211_SKB_RXCB(skb);
-        u8 pn[CCMP_PN_LEN];
+        u8 pn[IEEE80211_CCMP_PN_LEN];
         int data_len;
         int queue;
 
@@ -500,12 +502,13 @@ ieee80211_crypto_ccmp_decrypt(struct ieee80211_rx_data *rx)
             !ieee80211_is_robust_mgmt_frame(hdr))
                 return RX_CONTINUE;
 
-        data_len = skb->len - hdrlen - CCMP_HDR_LEN - CCMP_MIC_LEN;
+        data_len = skb->len - hdrlen - IEEE80211_CCMP_HDR_LEN -
+                   IEEE80211_CCMP_MIC_LEN;
         if (!rx->sta || data_len < 0)
                 return RX_DROP_UNUSABLE;
 
         if (status->flag & RX_FLAG_DECRYPTED) {
-                if (!pskb_may_pull(rx->skb, hdrlen + CCMP_HDR_LEN))
+                if (!pskb_may_pull(rx->skb, hdrlen + IEEE80211_CCMP_HDR_LEN))
                         return RX_DROP_UNUSABLE;
         } else {
                 if (skb_linearize(rx->skb))
@@ -516,7 +519,7 @@ ieee80211_crypto_ccmp_decrypt(struct ieee80211_rx_data *rx)
 
         queue = rx->security_idx;
 
-        if (memcmp(pn, key->u.ccmp.rx_pn[queue], CCMP_PN_LEN) <= 0) {
+        if (memcmp(pn, key->u.ccmp.rx_pn[queue], IEEE80211_CCMP_PN_LEN) <= 0) {
                 key->u.ccmp.replays++;
                 return RX_DROP_UNUSABLE;
         }
@@ -528,19 +531,20 @@ ieee80211_crypto_ccmp_decrypt(struct ieee80211_rx_data *rx)
 
                 if (ieee80211_aes_ccm_decrypt(
                             key->u.ccmp.tfm, scratch,
-                            skb->data + hdrlen + CCMP_HDR_LEN, data_len,
-                            skb->data + skb->len - CCMP_MIC_LEN,
-                            skb->data + hdrlen + CCMP_HDR_LEN))
+                            skb->data + hdrlen + IEEE80211_CCMP_HDR_LEN,
+                            data_len,
+                            skb->data + skb->len - IEEE80211_CCMP_MIC_LEN,
+                            skb->data + hdrlen + IEEE80211_CCMP_HDR_LEN))
                         return RX_DROP_UNUSABLE;
         }
 
-        memcpy(key->u.ccmp.rx_pn[queue], pn, CCMP_PN_LEN);
+        memcpy(key->u.ccmp.rx_pn[queue], pn, IEEE80211_CCMP_PN_LEN);
 
         /* Remove CCMP header and MIC */
-        if (pskb_trim(skb, skb->len - CCMP_MIC_LEN))
+        if (pskb_trim(skb, skb->len - IEEE80211_CCMP_MIC_LEN))
                 return RX_DROP_UNUSABLE;
-        memmove(skb->data + CCMP_HDR_LEN, skb->data, hdrlen);
-        skb_pull(skb, CCMP_HDR_LEN);
+        memmove(skb->data + IEEE80211_CCMP_HDR_LEN, skb->data, hdrlen);
+        skb_pull(skb, IEEE80211_CCMP_HDR_LEN);
 
         return RX_CONTINUE;
 }
diff --git a/net/mpls/Kconfig b/net/mpls/Kconfig
new file mode 100644
index 000000000000..37421db88965
--- /dev/null
+++ b/net/mpls/Kconfig
@@ -0,0 +1,9 @@
+#
+# MPLS configuration
+#
+config NET_MPLS_GSO
+        tristate "MPLS: GSO support"
+        help
+         This is helper module to allow segmentation of non-MPLS GSO packets
+         that have had MPLS stack entries pushed onto them and thus
+         become MPLS GSO packets.
diff --git a/net/mpls/Makefile b/net/mpls/Makefile
new file mode 100644
index 000000000000..0a3c171be537
--- /dev/null
+++ b/net/mpls/Makefile
@@ -0,0 +1,4 @@
+#
+# Makefile for MPLS.
+#
+obj-y += mpls_gso.o
diff --git a/net/mpls/mpls_gso.c b/net/mpls/mpls_gso.c
new file mode 100644
index 000000000000..1bec1219ab81
--- /dev/null
+++ b/net/mpls/mpls_gso.c
@@ -0,0 +1,108 @@
+/*
+ *      MPLS GSO Support
+ *
+ *      Authors: Simon Horman (horms@verge.net.au)
+ *
+ *      This program is free software; you can redistribute it and/or
+ *      modify it under the terms of the GNU General Public License
+ *      as published by the Free Software Foundation; either version
+ *      2 of the License, or (at your option) any later version.
+ *
+ *      Based on: GSO portions of net/ipv4/gre.c
+ */
+
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
+#include <linux/err.h>
+#include <linux/module.h>
+#include <linux/netdev_features.h>
+#include <linux/netdevice.h>
+#include <linux/skbuff.h>
+
+static struct sk_buff *mpls_gso_segment(struct sk_buff *skb,
+                                       netdev_features_t features)
+{
+        struct sk_buff *segs = ERR_PTR(-EINVAL);
+        netdev_features_t mpls_features;
+        __be16 mpls_protocol;
+
+        if (unlikely(skb_shinfo(skb)->gso_type &
+                                ~(SKB_GSO_TCPV4 |
+                                  SKB_GSO_TCPV6 |
+                                  SKB_GSO_UDP |
+                                  SKB_GSO_DODGY |
+                                  SKB_GSO_TCP_ECN |
+                                  SKB_GSO_GRE |
+                                  SKB_GSO_MPLS)))
+                goto out;
+
+        /* Setup inner SKB. */
+        mpls_protocol = skb->protocol;
+        skb->protocol = skb->inner_protocol;
+
+        /* Push back the mac header that skb_mac_gso_segment() has pulled.
+         * It will be re-pulled by the call to skb_mac_gso_segment() below
+         */
+        __skb_push(skb, skb->mac_len);
+
+        /* Segment inner packet. */
+        mpls_features = skb->dev->mpls_features & netif_skb_features(skb);
+        segs = skb_mac_gso_segment(skb, mpls_features);
+
+
+        /* Restore outer protocol. */
+        skb->protocol = mpls_protocol;
+
+        /* Re-pull the mac header that the call to skb_mac_gso_segment()
+         * above pulled.  It will be re-pushed after returning
+         * skb_mac_gso_segment(), an indirect caller of this function.
+         */
+        __skb_push(skb, skb->data - skb_mac_header(skb));
+
+out:
+        return segs;
+}
+
+static int mpls_gso_send_check(struct sk_buff *skb)
+{
+        return 0;
+}
+
+static struct packet_offload mpls_mc_offload = {
+        .type = cpu_to_be16(ETH_P_MPLS_MC),
+        .callbacks = {
+                .gso_send_check =       mpls_gso_send_check,
+                .gso_segment    =       mpls_gso_segment,
+        },
+};
+
+static struct packet_offload mpls_uc_offload = {
+        .type = cpu_to_be16(ETH_P_MPLS_UC),
+        .callbacks = {
+                .gso_send_check =       mpls_gso_send_check,
+                .gso_segment    =       mpls_gso_segment,
+        },
+};
+
+static int __init mpls_gso_init(void)
+{
+        pr_info("MPLS GSO support\n");
+
+        dev_add_offload(&mpls_uc_offload);
+        dev_add_offload(&mpls_mc_offload);
+
+        return 0;
+}
+
+static void __exit mpls_gso_exit(void)
+{
+        dev_remove_offload(&mpls_uc_offload);
+        dev_remove_offload(&mpls_mc_offload);
+}
+
+module_init(mpls_gso_init);
+module_exit(mpls_gso_exit);
+
+MODULE_DESCRIPTION("MPLS GSO support");
+MODULE_AUTHOR("Simon Horman (horms@verge.net.au)");
+MODULE_LICENSE("GPL");
diff --git a/net/netfilter/core.c b/net/netfilter/core.c
index 857ca9f35177..2217363ab422 100644
--- a/net/netfilter/core.c
+++ b/net/netfilter/core.c
@@ -304,17 +304,26 @@ static struct pernet_operations netfilter_net_ops = {
         .exit = netfilter_net_exit,
 };
 
-void __init netfilter_init(void)
+int __init netfilter_init(void)
 {
-        int i, h;
+        int i, h, ret;
+
         for (i = 0; i < ARRAY_SIZE(nf_hooks); i++) {
                 for (h = 0; h < NF_MAX_HOOKS; h++)
                         INIT_LIST_HEAD(&nf_hooks[i][h]);
         }
 
-        if (register_pernet_subsys(&netfilter_net_ops) < 0)
-                panic("cannot create netfilter proc entry");
+        ret = register_pernet_subsys(&netfilter_net_ops);
+        if (ret < 0)
+                goto err;
+
+        ret = netfilter_log_init();
+        if (ret < 0)
+                goto err_pernet;
 
-        if (netfilter_log_init() < 0)
-                panic("cannot initialize nf_log");
+        return 0;
+err_pernet:
+        unregister_pernet_subsys(&netfilter_net_ops);
+err:
+        return ret;
 }
diff --git a/net/netfilter/ipvs/ip_vs_conn.c b/net/netfilter/ipvs/ip_vs_conn.c
index a083bda322b6..4c8e5c0aa1ab 100644
--- a/net/netfilter/ipvs/ip_vs_conn.c
+++ b/net/netfilter/ipvs/ip_vs_conn.c
@@ -975,8 +975,7 @@ static void *ip_vs_conn_array(struct seq_file *seq, loff_t pos)
                                 return cp;
                         }
                 }
-                rcu_read_unlock();
-                rcu_read_lock();
+                cond_resched_rcu();
         }
 
         return NULL;
@@ -1015,8 +1014,7 @@ static void *ip_vs_conn_seq_next(struct seq_file *seq, void *v, loff_t *pos)
                         iter->l = &ip_vs_conn_tab[idx];
                         return cp;
                 }
-                rcu_read_unlock();
-                rcu_read_lock();
+                cond_resched_rcu();
         }
         iter->l = NULL;
         return NULL;
@@ -1206,17 +1204,13 @@ void ip_vs_random_dropentry(struct net *net)
         int idx;
         struct ip_vs_conn *cp, *cp_c;
 
+        rcu_read_lock();
         /*
          * Randomly scan 1/32 of the whole table every second
          */
         for (idx = 0; idx < (ip_vs_conn_tab_size>>5); idx++) {
                 unsigned int hash = net_random() & ip_vs_conn_tab_mask;
 
-                /*
-                 *  Lock is actually needed in this loop.
-                 */
-                rcu_read_lock();
-
                 hlist_for_each_entry_rcu(cp, &ip_vs_conn_tab[hash], c_list) {
                         if (cp->flags & IP_VS_CONN_F_TEMPLATE)
                                 /* connection template */
@@ -1237,6 +1231,18 @@ void ip_vs_random_dropentry(struct net *net)
                                 default:
                                         continue;
                                 }
+                        } else if (cp->protocol == IPPROTO_SCTP) {
+                                switch (cp->state) {
+                                case IP_VS_SCTP_S_INIT1:
+                                case IP_VS_SCTP_S_INIT:
+                                        break;
+                                case IP_VS_SCTP_S_ESTABLISHED:
+                                        if (todrop_entry(cp))
+                                                break;
+                                        continue;
+                                default:
+                                        continue;
+                                }
                         } else {
                                 if (!todrop_entry(cp))
                                         continue;
@@ -1252,8 +1258,9 @@ void ip_vs_random_dropentry(struct net *net)
                                 __ip_vs_conn_put(cp);
                         }
                 }
-                rcu_read_unlock();
+                cond_resched_rcu();
         }
+        rcu_read_unlock();
 }
 
 
@@ -1267,11 +1274,8 @@ static void ip_vs_conn_flush(struct net *net)
         struct netns_ipvs *ipvs = net_ipvs(net);
 
 flush_again:
+        rcu_read_lock();
         for (idx = 0; idx < ip_vs_conn_tab_size; idx++) {
-                /*
-                 *  Lock is actually needed in this loop.
-                 */
-                rcu_read_lock();
 
                 hlist_for_each_entry_rcu(cp, &ip_vs_conn_tab[idx], c_list) {
                         if (!ip_vs_conn_net_eq(cp, net))
@@ -1286,8 +1290,9 @@ flush_again:
                                 __ip_vs_conn_put(cp);
                         }
                 }
-                rcu_read_unlock();
+                cond_resched_rcu();
         }
+        rcu_read_unlock();
 
         /* the counter may be not NULL, because maybe some conn entries
            are run by slow timer handler or unhashed but still referred */
diff --git a/net/netfilter/ipvs/ip_vs_core.c b/net/netfilter/ipvs/ip_vs_core.c
index 23b8eb53a569..4f69e83ff836 100644
--- a/net/netfilter/ipvs/ip_vs_core.c
+++ b/net/netfilter/ipvs/ip_vs_core.c
@@ -305,7 +305,7 @@ ip_vs_sched_persist(struct ip_vs_service *svc,
                  * return *ignored=0 i.e. ICMP and NF_DROP
                  */
                 sched = rcu_dereference(svc->scheduler);
-                dest = sched->schedule(svc, skb);
+                dest = sched->schedule(svc, skb, iph);
                 if (!dest) {
                         IP_VS_DBG(1, "p-schedule: no dest found.\n");
                         kfree(param.pe_data);
@@ -452,7 +452,7 @@ ip_vs_schedule(struct ip_vs_service *svc, struct sk_buff *skb,
         }
 
         sched = rcu_dereference(svc->scheduler);
-        dest = sched->schedule(svc, skb);
+        dest = sched->schedule(svc, skb, iph);
         if (dest == NULL) {
                 IP_VS_DBG(1, "Schedule: no dest found.\n");
                 return NULL;
diff --git a/net/netfilter/ipvs/ip_vs_ctl.c b/net/netfilter/ipvs/ip_vs_ctl.c
index 9e6c2a075a4c..c8148e487386 100644
--- a/net/netfilter/ipvs/ip_vs_ctl.c
+++ b/net/netfilter/ipvs/ip_vs_ctl.c
@@ -1487,9 +1487,9 @@ ip_vs_forget_dev(struct ip_vs_dest *dest, struct net_device *dev)
  * Currently only NETDEV_DOWN is handled to release refs to cached dsts
  */
 static int ip_vs_dst_event(struct notifier_block *this, unsigned long event,
-                            void *ptr)
+                           void *ptr)
 {
-        struct net_device *dev = ptr;
+        struct net_device *dev = netdev_notifier_info_to_dev(ptr);
         struct net *net = dev_net(dev);
         struct netns_ipvs *ipvs = net_ipvs(net);
         struct ip_vs_service *svc;
@@ -1575,7 +1575,7 @@ static int zero;
 static int three = 3;
 
 static int
-proc_do_defense_mode(ctl_table *table, int write,
+proc_do_defense_mode(struct ctl_table *table, int write,
                      void __user *buffer, size_t *lenp, loff_t *ppos)
 {
         struct net *net = current->nsproxy->net_ns;
@@ -1596,7 +1596,7 @@ proc_do_defense_mode(ctl_table *table, int write,
 }
 
 static int
-proc_do_sync_threshold(ctl_table *table, int write,
+proc_do_sync_threshold(struct ctl_table *table, int write,
                        void __user *buffer, size_t *lenp, loff_t *ppos)
 {
         int *valp = table->data;
@@ -1616,7 +1616,7 @@ proc_do_sync_threshold(ctl_table *table, int write,
 }
 
 static int
-proc_do_sync_mode(ctl_table *table, int write,
+proc_do_sync_mode(struct ctl_table *table, int write,
                      void __user *buffer, size_t *lenp, loff_t *ppos)
 {
         int *valp = table->data;
@@ -1634,7 +1634,7 @@ proc_do_sync_mode(ctl_table *table, int write,
 }
 
 static int
-proc_do_sync_ports(ctl_table *table, int write,
+proc_do_sync_ports(struct ctl_table *table, int write,
                    void __user *buffer, size_t *lenp, loff_t *ppos)
 {
         int *valp = table->data;
@@ -1715,12 +1715,18 @@ static struct ctl_table vs_vars[] = {
                 .proc_handler   = &proc_do_sync_ports,
         },
         {
-                .procname       = "sync_qlen_max",
+                .procname       = "sync_persist_mode",
                 .maxlen         = sizeof(int),
                 .mode           = 0644,
                 .proc_handler   = proc_dointvec,
         },
         {
+                .procname       = "sync_qlen_max",
+                .maxlen         = sizeof(unsigned long),
+                .mode           = 0644,
+                .proc_handler   = proc_doulongvec_minmax,
+        },
+        {
                 .procname       = "sync_sock_size",
                 .maxlen         = sizeof(int),
                 .mode           = 0644,
@@ -1739,6 +1745,18 @@ static struct ctl_table vs_vars[] = {
                 .proc_handler   = proc_dointvec,
         },
         {
+                .procname       = "sloppy_tcp",
+                .maxlen         = sizeof(int),
+                .mode           = 0644,
+                .proc_handler   = proc_dointvec,
+        },
+        {
+                .procname       = "sloppy_sctp",
+                .maxlen         = sizeof(int),
+                .mode           = 0644,
+                .proc_handler   = proc_dointvec,
+        },
+        {
                 .procname       = "expire_quiescent_template",
                 .maxlen         = sizeof(int),
                 .mode           = 0644,
@@ -3717,12 +3735,15 @@ static int __net_init ip_vs_control_net_init_sysctl(struct net *net)
         tbl[idx++].data = &ipvs->sysctl_sync_ver;
         ipvs->sysctl_sync_ports = 1;
         tbl[idx++].data = &ipvs->sysctl_sync_ports;
+        tbl[idx++].data = &ipvs->sysctl_sync_persist_mode;
         ipvs->sysctl_sync_qlen_max = nr_free_buffer_pages() / 32;
         tbl[idx++].data = &ipvs->sysctl_sync_qlen_max;
         ipvs->sysctl_sync_sock_size = 0;
         tbl[idx++].data = &ipvs->sysctl_sync_sock_size;
         tbl[idx++].data = &ipvs->sysctl_cache_bypass;
         tbl[idx++].data = &ipvs->sysctl_expire_nodest_conn;
+        tbl[idx++].data = &ipvs->sysctl_sloppy_tcp;
+        tbl[idx++].data = &ipvs->sysctl_sloppy_sctp;
         tbl[idx++].data = &ipvs->sysctl_expire_quiescent_template;
         ipvs->sysctl_sync_threshold[0] = DEFAULT_SYNC_THRESHOLD;
         ipvs->sysctl_sync_threshold[1] = DEFAULT_SYNC_PERIOD;
diff --git a/net/netfilter/ipvs/ip_vs_dh.c b/net/netfilter/ipvs/ip_vs_dh.c
index ccab120df45e..c3b84546ea9e 100644
--- a/net/netfilter/ipvs/ip_vs_dh.c
+++ b/net/netfilter/ipvs/ip_vs_dh.c
@@ -214,18 +214,16 @@ static inline int is_overloaded(struct ip_vs_dest *dest)
  *      Destination hashing scheduling
  */
 static struct ip_vs_dest *
-ip_vs_dh_schedule(struct ip_vs_service *svc, const struct sk_buff *skb)
+ip_vs_dh_schedule(struct ip_vs_service *svc, const struct sk_buff *skb,
+                  struct ip_vs_iphdr *iph)
 {
         struct ip_vs_dest *dest;
         struct ip_vs_dh_state *s;
-        struct ip_vs_iphdr iph;
-
-        ip_vs_fill_iph_addr_only(svc->af, skb, &iph);
 
         IP_VS_DBG(6, "%s(): Scheduling...\n", __func__);
 
         s = (struct ip_vs_dh_state *) svc->sched_data;
-        dest = ip_vs_dh_get(svc->af, s, &iph.daddr);
+        dest = ip_vs_dh_get(svc->af, s, &iph->daddr);
         if (!dest
             || !(dest->flags & IP_VS_DEST_F_AVAILABLE)
             || atomic_read(&dest->weight) <= 0
@@ -235,7 +233,7 @@ ip_vs_dh_schedule(struct ip_vs_service *svc, const struct sk_buff *skb)
         }
 
         IP_VS_DBG_BUF(6, "DH: destination IP address %s --> server %s:%d\n",
-                      IP_VS_DBG_ADDR(svc->af, &iph.daddr),
+                      IP_VS_DBG_ADDR(svc->af, &iph->daddr),
                       IP_VS_DBG_ADDR(svc->af, &dest->addr),
                       ntohs(dest->port));
 
diff --git a/net/netfilter/ipvs/ip_vs_lblc.c b/net/netfilter/ipvs/ip_vs_lblc.c
index 5ea26bd87743..1383b0eadc0e 100644
--- a/net/netfilter/ipvs/ip_vs_lblc.c
+++ b/net/netfilter/ipvs/ip_vs_lblc.c
@@ -118,7 +118,7 @@ struct ip_vs_lblc_table {
  *      IPVS LBLC sysctl table
  */
 #ifdef CONFIG_SYSCTL
-static ctl_table vs_vars_table[] = {
+static struct ctl_table vs_vars_table[] = {
         {
                 .procname       = "lblc_expiration",
                 .data           = NULL,
@@ -487,19 +487,17 @@ is_overloaded(struct ip_vs_dest *dest, struct ip_vs_service *svc)
  *    Locality-Based (weighted) Least-Connection scheduling
  */
 static struct ip_vs_dest *
-ip_vs_lblc_schedule(struct ip_vs_service *svc, const struct sk_buff *skb)
+ip_vs_lblc_schedule(struct ip_vs_service *svc, const struct sk_buff *skb,
+                    struct ip_vs_iphdr *iph)
 {
         struct ip_vs_lblc_table *tbl = svc->sched_data;
-        struct ip_vs_iphdr iph;
         struct ip_vs_dest *dest = NULL;
         struct ip_vs_lblc_entry *en;
 
-        ip_vs_fill_iph_addr_only(svc->af, skb, &iph);
-
         IP_VS_DBG(6, "%s(): Scheduling...\n", __func__);
 
         /* First look in our cache */
-        en = ip_vs_lblc_get(svc->af, tbl, &iph.daddr);
+        en = ip_vs_lblc_get(svc->af, tbl, &iph->daddr);
         if (en) {
                 /* We only hold a read lock, but this is atomic */
                 en->lastuse = jiffies;
@@ -529,12 +527,12 @@ ip_vs_lblc_schedule(struct ip_vs_service *svc, const struct sk_buff *skb)
         /* If we fail to create a cache entry, we'll just use the valid dest */
         spin_lock_bh(&svc->sched_lock);
         if (!tbl->dead)
-                ip_vs_lblc_new(tbl, &iph.daddr, dest);
+                ip_vs_lblc_new(tbl, &iph->daddr, dest);
         spin_unlock_bh(&svc->sched_lock);
 
 out:
         IP_VS_DBG_BUF(6, "LBLC: destination IP address %s --> server %s:%d\n",
-                      IP_VS_DBG_ADDR(svc->af, &iph.daddr),
+                      IP_VS_DBG_ADDR(svc->af, &iph->daddr),
                       IP_VS_DBG_ADDR(svc->af, &dest->addr), ntohs(dest->port));
 
         return dest;
diff --git a/net/netfilter/ipvs/ip_vs_lblcr.c b/net/netfilter/ipvs/ip_vs_lblcr.c
index 50123c2ab484..3cd85b2fc67c 100644
--- a/net/netfilter/ipvs/ip_vs_lblcr.c
+++ b/net/netfilter/ipvs/ip_vs_lblcr.c
@@ -299,7 +299,7 @@ struct ip_vs_lblcr_table {
  *      IPVS LBLCR sysctl table
  */
 
-static ctl_table vs_vars_table[] = {
+static struct ctl_table vs_vars_table[] = {
         {
                 .procname       = "lblcr_expiration",
                 .data           = NULL,
@@ -655,19 +655,17 @@ is_overloaded(struct ip_vs_dest *dest, struct ip_vs_service *svc)
  *    Locality-Based (weighted) Least-Connection scheduling
  */
 static struct ip_vs_dest *
-ip_vs_lblcr_schedule(struct ip_vs_service *svc, const struct sk_buff *skb)
+ip_vs_lblcr_schedule(struct ip_vs_service *svc, const struct sk_buff *skb,
+                     struct ip_vs_iphdr *iph)
 {
         struct ip_vs_lblcr_table *tbl = svc->sched_data;
-        struct ip_vs_iphdr iph;
         struct ip_vs_dest *dest;
         struct ip_vs_lblcr_entry *en;
 
-        ip_vs_fill_iph_addr_only(svc->af, skb, &iph);
-
         IP_VS_DBG(6, "%s(): Scheduling...\n", __func__);
 
         /* First look in our cache */
-        en = ip_vs_lblcr_get(svc->af, tbl, &iph.daddr);
+        en = ip_vs_lblcr_get(svc->af, tbl, &iph->daddr);
         if (en) {
                 en->lastuse = jiffies;
 
@@ -718,12 +716,12 @@ ip_vs_lblcr_schedule(struct ip_vs_service *svc, const struct sk_buff *skb)
         /* If we fail to create a cache entry, we'll just use the valid dest */
         spin_lock_bh(&svc->sched_lock);
         if (!tbl->dead)
-                ip_vs_lblcr_new(tbl, &iph.daddr, dest);
+                ip_vs_lblcr_new(tbl, &iph->daddr, dest);
         spin_unlock_bh(&svc->sched_lock);
 
 out:
         IP_VS_DBG_BUF(6, "LBLCR: destination IP address %s --> server %s:%d\n",
-                      IP_VS_DBG_ADDR(svc->af, &iph.daddr),
+                      IP_VS_DBG_ADDR(svc->af, &iph->daddr),
                       IP_VS_DBG_ADDR(svc->af, &dest->addr), ntohs(dest->port));
 
         return dest;
diff --git a/net/netfilter/ipvs/ip_vs_lc.c b/net/netfilter/ipvs/ip_vs_lc.c
index 5128e338a749..2bdcb1cf2127 100644
--- a/net/netfilter/ipvs/ip_vs_lc.c
+++ b/net/netfilter/ipvs/ip_vs_lc.c
@@ -26,7 +26,8 @@
  *      Least Connection scheduling
  */
 static struct ip_vs_dest *
-ip_vs_lc_schedule(struct ip_vs_service *svc, const struct sk_buff *skb)
+ip_vs_lc_schedule(struct ip_vs_service *svc, const struct sk_buff *skb,
+                  struct ip_vs_iphdr *iph)
 {
         struct ip_vs_dest *dest, *least = NULL;
         unsigned int loh = 0, doh;
diff --git a/net/netfilter/ipvs/ip_vs_nq.c b/net/netfilter/ipvs/ip_vs_nq.c
index 646cfd4baa73..d8d9860934fe 100644
--- a/net/netfilter/ipvs/ip_vs_nq.c
+++ b/net/netfilter/ipvs/ip_vs_nq.c
@@ -55,7 +55,8 @@ ip_vs_nq_dest_overhead(struct ip_vs_dest *dest)
  *      Weighted Least Connection scheduling
  */
 static struct ip_vs_dest *
-ip_vs_nq_schedule(struct ip_vs_service *svc, const struct sk_buff *skb)
+ip_vs_nq_schedule(struct ip_vs_service *svc, const struct sk_buff *skb,
+                  struct ip_vs_iphdr *iph)
 {
         struct ip_vs_dest *dest, *least = NULL;
         unsigned int loh = 0, doh;
diff --git a/net/netfilter/ipvs/ip_vs_proto_sctp.c b/net/netfilter/ipvs/ip_vs_proto_sctp.c
index 86464881cd20..3c0da8728036 100644
--- a/net/netfilter/ipvs/ip_vs_proto_sctp.c
+++ b/net/netfilter/ipvs/ip_vs_proto_sctp.c
@@ -15,6 +15,7 @@ sctp_conn_schedule(int af, struct sk_buff *skb, struct ip_vs_proto_data *pd,
 {
         struct net *net;
         struct ip_vs_service *svc;
+        struct netns_ipvs *ipvs;
         sctp_chunkhdr_t _schunkh, *sch;
         sctp_sctphdr_t *sh, _sctph;
 
@@ -27,13 +28,14 @@ sctp_conn_schedule(int af, struct sk_buff *skb, struct ip_vs_proto_data *pd,
         if (sch == NULL)
                 return 0;
         net = skb_net(skb);
+        ipvs = net_ipvs(net);
         rcu_read_lock();
-        if ((sch->type == SCTP_CID_INIT) &&
+        if ((sch->type == SCTP_CID_INIT || sysctl_sloppy_sctp(ipvs)) &&
             (svc = ip_vs_service_find(net, af, skb->mark, iph->protocol,
                                       &iph->daddr, sh->dest))) {
                 int ignored;
 
-                if (ip_vs_todrop(net_ipvs(net))) {
+                if (ip_vs_todrop(ipvs)) {
                         /*
                          * It seems that we are very loaded.
                          * We have to drop this packet :(
@@ -183,710 +185,159 @@ sctp_csum_check(int af, struct sk_buff *skb, struct ip_vs_protocol *pp)
         return 1;
 }
 
-struct ipvs_sctp_nextstate {
-        int next_state;
-};
 enum ipvs_sctp_event_t {
-        IP_VS_SCTP_EVE_DATA_CLI,
-        IP_VS_SCTP_EVE_DATA_SER,
-        IP_VS_SCTP_EVE_INIT_CLI,
-        IP_VS_SCTP_EVE_INIT_SER,
-        IP_VS_SCTP_EVE_INIT_ACK_CLI,
-        IP_VS_SCTP_EVE_INIT_ACK_SER,
-        IP_VS_SCTP_EVE_COOKIE_ECHO_CLI,
-        IP_VS_SCTP_EVE_COOKIE_ECHO_SER,
-        IP_VS_SCTP_EVE_COOKIE_ACK_CLI,
-        IP_VS_SCTP_EVE_COOKIE_ACK_SER,
-        IP_VS_SCTP_EVE_ABORT_CLI,
-        IP_VS_SCTP_EVE__ABORT_SER,
-        IP_VS_SCTP_EVE_SHUT_CLI,
-        IP_VS_SCTP_EVE_SHUT_SER,
-        IP_VS_SCTP_EVE_SHUT_ACK_CLI,
-        IP_VS_SCTP_EVE_SHUT_ACK_SER,
-        IP_VS_SCTP_EVE_SHUT_COM_CLI,
-        IP_VS_SCTP_EVE_SHUT_COM_SER,
-        IP_VS_SCTP_EVE_LAST
+        IP_VS_SCTP_DATA = 0,            /* DATA, SACK, HEARTBEATs */
+        IP_VS_SCTP_INIT,
+        IP_VS_SCTP_INIT_ACK,
+        IP_VS_SCTP_COOKIE_ECHO,
+        IP_VS_SCTP_COOKIE_ACK,
+        IP_VS_SCTP_SHUTDOWN,
+        IP_VS_SCTP_SHUTDOWN_ACK,
+        IP_VS_SCTP_SHUTDOWN_COMPLETE,
+        IP_VS_SCTP_ERROR,
+        IP_VS_SCTP_ABORT,
+        IP_VS_SCTP_EVENT_LAST
 };
 
-static enum ipvs_sctp_event_t sctp_events[256] = {
-        IP_VS_SCTP_EVE_DATA_CLI,
-        IP_VS_SCTP_EVE_INIT_CLI,
-        IP_VS_SCTP_EVE_INIT_ACK_CLI,
-        IP_VS_SCTP_EVE_DATA_CLI,
-        IP_VS_SCTP_EVE_DATA_CLI,
-        IP_VS_SCTP_EVE_DATA_CLI,
-        IP_VS_SCTP_EVE_ABORT_CLI,
-        IP_VS_SCTP_EVE_SHUT_CLI,
-        IP_VS_SCTP_EVE_SHUT_ACK_CLI,
-        IP_VS_SCTP_EVE_DATA_CLI,
-        IP_VS_SCTP_EVE_COOKIE_ECHO_CLI,
-        IP_VS_SCTP_EVE_COOKIE_ACK_CLI,
-        IP_VS_SCTP_EVE_DATA_CLI,
-        IP_VS_SCTP_EVE_DATA_CLI,
-        IP_VS_SCTP_EVE_SHUT_COM_CLI,
+/* RFC 2960, 3.2 Chunk Field Descriptions */
+static __u8 sctp_events[] = {
+        [SCTP_CID_DATA]                 = IP_VS_SCTP_DATA,
+        [SCTP_CID_INIT]                 = IP_VS_SCTP_INIT,
+        [SCTP_CID_INIT_ACK]             = IP_VS_SCTP_INIT_ACK,
+        [SCTP_CID_SACK]                 = IP_VS_SCTP_DATA,
+        [SCTP_CID_HEARTBEAT]            = IP_VS_SCTP_DATA,
+        [SCTP_CID_HEARTBEAT_ACK]        = IP_VS_SCTP_DATA,
+        [SCTP_CID_ABORT]                = IP_VS_SCTP_ABORT,
+        [SCTP_CID_SHUTDOWN]             = IP_VS_SCTP_SHUTDOWN,
+        [SCTP_CID_SHUTDOWN_ACK]         = IP_VS_SCTP_SHUTDOWN_ACK,
+        [SCTP_CID_ERROR]                = IP_VS_SCTP_ERROR,
+        [SCTP_CID_COOKIE_ECHO]          = IP_VS_SCTP_COOKIE_ECHO,
+        [SCTP_CID_COOKIE_ACK]           = IP_VS_SCTP_COOKIE_ACK,
+        [SCTP_CID_ECN_ECNE]             = IP_VS_SCTP_DATA,
+        [SCTP_CID_ECN_CWR]              = IP_VS_SCTP_DATA,
+        [SCTP_CID_SHUTDOWN_COMPLETE]    = IP_VS_SCTP_SHUTDOWN_COMPLETE,
 };
 
-static struct ipvs_sctp_nextstate
- sctp_states_table[IP_VS_SCTP_S_LAST][IP_VS_SCTP_EVE_LAST] = {
-        /*
-         * STATE : IP_VS_SCTP_S_NONE
-         */
-        /*next state *//*event */
-        {{IP_VS_SCTP_S_CLOSED /* IP_VS_SCTP_EVE_DATA_CLI */ },
-         {IP_VS_SCTP_S_CLOSED /* IP_VS_SCTP_EVE_DATA_SER */ },
-         {IP_VS_SCTP_S_INIT_CLI /* IP_VS_SCTP_EVE_INIT_CLI */ },
-         {IP_VS_SCTP_S_INIT_SER /* IP_VS_SCTP_EVE_INIT_SER */ },
-         {IP_VS_SCTP_S_CLOSED /* IP_VS_SCTP_EVE_INIT_ACK_CLI */ },
-         {IP_VS_SCTP_S_CLOSED /* IP_VS_SCTP_EVE_INIT_ACK_SER */ },
-         {IP_VS_SCTP_S_CLOSED /* IP_VS_SCTP_EVE_COOKIE_ECHO_CLI */ },
-         {IP_VS_SCTP_S_CLOSED /* IP_VS_SCTP_EVE_COOKIE_ECHO_SER */ },
-         {IP_VS_SCTP_S_CLOSED /* IP_VS_SCTP_EVE_COOKIE_ACK_CLI */ },
-         {IP_VS_SCTP_S_CLOSED /* IP_VS_SCTP_EVE_COOKIE_ACK_SER */ },
-         {IP_VS_SCTP_S_CLOSED /* IP_VS_SCTP_EVE_ABORT_CLI */ },
-         {IP_VS_SCTP_S_CLOSED /* IP_VS_SCTP_EVE_ABORT_SER */ },
-         {IP_VS_SCTP_S_CLOSED /* IP_VS_SCTP_EVE_SHUT_CLI */ },
-         {IP_VS_SCTP_S_CLOSED /* IP_VS_SCTP_EVE_SHUT_SER */ },
-         {IP_VS_SCTP_S_CLOSED /* IP_VS_SCTP_EVE_SHUT_ACK_CLI */ },
-         {IP_VS_SCTP_S_CLOSED /* IP_VS_SCTP_EVE_SHUT_ACK_SER */ },
-         {IP_VS_SCTP_S_CLOSED /* IP_VS_SCTP_EVE_SHUT_COM_CLI */ },
-         {IP_VS_SCTP_S_CLOSED /* IP_VS_SCTP_EVE_SHUT_COM_SER */ },
-         },
-        /*
-         * STATE : IP_VS_SCTP_S_INIT_CLI
-         * Cient sent INIT and is waiting for reply from server(In ECHO_WAIT)
-         */
-        {{IP_VS_SCTP_S_CLOSED /* IP_VS_SCTP_EVE_DATA_CLI */ },
-         {IP_VS_SCTP_S_CLOSED /* IP_VS_SCTP_EVE_DATA_SER */ },
-         {IP_VS_SCTP_S_INIT_CLI /* IP_VS_SCTP_EVE_INIT_CLI */ },
-         {IP_VS_SCTP_S_INIT_SER /* IP_VS_SCTP_EVE_INIT_SER */ },
-         {IP_VS_SCTP_S_CLOSED /* IP_VS_SCTP_EVE_INIT_ACK_CLI */ },
-         {IP_VS_SCTP_S_INIT_ACK_SER /* IP_VS_SCTP_EVE_INIT_ACK_SER */ },
-         {IP_VS_SCTP_S_CLOSED /* IP_VS_SCTP_EVE_ECHO_CLI */ },
-         {IP_VS_SCTP_S_INIT_CLI /* IP_VS_SCTP_EVE_ECHO_SER */ },
-         {IP_VS_SCTP_S_CLOSED /* IP_VS_SCTP_EVE_COOKIE_ACK_CLI */ },
-         {IP_VS_SCTP_S_INIT_CLI /* IP_VS_SCTP_EVE_COOKIE_ACK_SER */ },
-         {IP_VS_SCTP_S_CLOSED /* IP_VS_SCTP_EVE_ABORT_CLI */ },
-         {IP_VS_SCTP_S_CLOSED /* IP_VS_SCTP_EVE_ABORT_SER */ },
-         {IP_VS_SCTP_S_CLOSED /* IP_VS_SCTP_EVE_SHUT_CLI */ },
-         {IP_VS_SCTP_S_CLOSED /* IP_VS_SCTP_EVE_SHUT_SER */ },
-         {IP_VS_SCTP_S_CLOSED /* IP_VS_SCTP_EVE_SHUT_ACK_CLI */ },
-         {IP_VS_SCTP_S_CLOSED /* IP_VS_SCTP_EVE_SHUT_ACK_SER */ },
-         {IP_VS_SCTP_S_CLOSED /* IP_VS_SCTP_EVE_SHUT_COM_CLI */ },
-         {IP_VS_SCTP_S_CLOSED /* IP_VS_SCTP_EVE_SHUT_COM_SER */ }
-         },
-        /*
-         * State : IP_VS_SCTP_S_INIT_SER
-         * Server sent INIT and waiting for INIT ACK from the client
-         */
-        {{IP_VS_SCTP_S_CLOSED /* IP_VS_SCTP_EVE_DATA_CLI */ },
-         {IP_VS_SCTP_S_CLOSED /* IP_VS_SCTP_EVE_DATA_SER */ },
-         {IP_VS_SCTP_S_INIT_CLI /* IP_VS_SCTP_EVE_INIT_CLI */ },
-         {IP_VS_SCTP_S_INIT_SER /* IP_VS_SCTP_EVE_INIT_SER */ },
-         {IP_VS_SCTP_S_INIT_ACK_CLI /* IP_VS_SCTP_EVE_INIT_ACK_CLI */ },
-         {IP_VS_SCTP_S_CLOSED /* IP_VS_SCTP_EVE_INIT_ACK_SER */ },
-         {IP_VS_SCTP_S_INIT_SER /* IP_VS_SCTP_EVE_COOKIE_ECHO_CLI */ },
-         {IP_VS_SCTP_S_CLOSED /* IP_VS_SCTP_EVE_COOKIE_ECHO_SER */ },
-         {IP_VS_SCTP_S_INIT_SER /* IP_VS_SCTP_EVE_COOKIE_ACK_CLI */ },
-         {IP_VS_SCTP_S_CLOSED /* IP_VS_SCTP_EVE_COOKIE_ACK_SER */ },
-         {IP_VS_SCTP_S_CLOSED /* IP_VS_SCTP_EVE_ABORT_CLI */ },
-         {IP_VS_SCTP_S_CLOSED /* IP_VS_SCTP_EVE_ABORT_SER */ },
-         {IP_VS_SCTP_S_CLOSED /* IP_VS_SCTP_EVE_SHUT_CLI */ },
-         {IP_VS_SCTP_S_CLOSED /* IP_VS_SCTP_EVE_SHUT_SER */ },
-         {IP_VS_SCTP_S_CLOSED /* IP_VS_SCTP_EVE_SHUT_ACK_CLI */ },
-         {IP_VS_SCTP_S_CLOSED /* IP_VS_SCTP_EVE_SHUT_ACK_SER */ },
-         {IP_VS_SCTP_S_CLOSED /* IP_VS_SCTP_EVE_SHUT_COM_CLI */ },
-         {IP_VS_SCTP_S_CLOSED /* IP_VS_SCTP_EVE_SHUT_COM_SER */ }
-         },
-        /*
-         * State : IP_VS_SCTP_S_INIT_ACK_CLI
-         * Client sent INIT ACK and waiting for ECHO from the server
-         */
-        {{IP_VS_SCTP_S_CLOSED /* IP_VS_SCTP_EVE_DATA_CLI */ },
-         {IP_VS_SCTP_S_CLOSED /* IP_VS_SCTP_EVE_DATA_SER */ },
-         /*
-          * We have got an INIT from client. From the spec.“Upon receipt of
-          * an INIT in the COOKIE-WAIT state, an endpoint MUST respond with
-          * an INIT ACK using the same parameters it sent in its  original
-          * INIT chunk (including its Initiate Tag, unchanged”).
-          */
-         {IP_VS_SCTP_S_INIT_CLI /* IP_VS_SCTP_EVE_INIT_CLI */ },
-         {IP_VS_SCTP_S_INIT_SER /* IP_VS_SCTP_EVE_INIT_SER */ },
-         /*
-          * INIT_ACK has been resent by the client, let us stay is in
-          * the same state
-          */
-         {IP_VS_SCTP_S_INIT_ACK_CLI /* IP_VS_SCTP_EVE_INIT_ACK_CLI */ },
-         /*
-          * INIT_ACK sent by the server, close the connection
-          */
-         {IP_VS_SCTP_S_CLOSED /* IP_VS_SCTP_EVE_INIT_ACK_SER */ },
-         /*
-          * ECHO by client, it should not happen, close the connection
-          */
-         {IP_VS_SCTP_S_CLOSED /* IP_VS_SCTP_EVE_COOKIE_ECHO_CLI */ },
-         /*
-          * ECHO by server, this is what we are expecting, move to ECHO_SER
-          */
-         {IP_VS_SCTP_S_ECHO_SER /* IP_VS_SCTP_EVE_COOKIE_ECHO_SER */ },
-         /*
-          * COOKIE ACK from client, it should not happen, close the connection
-          */
-         {IP_VS_SCTP_S_CLOSED /* IP_VS_SCTP_EVE_COOKIE_ACK_CLI */ },
-         /*
-          * Unexpected COOKIE ACK from server, staty in the same state
-          */
-         {IP_VS_SCTP_S_INIT_ACK_CLI /* IP_VS_SCTP_EVE_COOKIE_ACK_SER */ },
-         {IP_VS_SCTP_S_CLOSED /* IP_VS_SCTP_EVE_ABORT_CLI */ },
-         {IP_VS_SCTP_S_CLOSED /* IP_VS_SCTP_EVE_ABORT_SER */ },
-         {IP_VS_SCTP_S_CLOSED /* IP_VS_SCTP_EVE_SHUT_CLI */ },
-         {IP_VS_SCTP_S_CLOSED /* IP_VS_SCTP_EVE_SHUT_SER */ },
-         {IP_VS_SCTP_S_CLOSED /* IP_VS_SCTP_EVE_SHUT_ACK_CLI */ },
-         {IP_VS_SCTP_S_CLOSED /* IP_VS_SCTP_EVE_SHUT_ACK_SER */ },
-         {IP_VS_SCTP_S_CLOSED /* IP_VS_SCTP_EVE_SHUT_COM_CLI */ },
-         {IP_VS_SCTP_S_CLOSED /* IP_VS_SCTP_EVE_SHUT_COM_SER */ }
-         },
-        /*
-         * State : IP_VS_SCTP_S_INIT_ACK_SER
-         * Server sent INIT ACK and waiting for ECHO from the client
-         */
-        {{IP_VS_SCTP_S_CLOSED /* IP_VS_SCTP_EVE_DATA_CLI */ },
-         {IP_VS_SCTP_S_CLOSED /* IP_VS_SCTP_EVE_DATA_SER */ },
-         /*
-          * We have got an INIT from client. From the spec.“Upon receipt of
-          * an INIT in the COOKIE-WAIT state, an endpoint MUST respond with
-          * an INIT ACK using the same parameters it sent in its  original
-          * INIT chunk (including its Initiate Tag, unchanged”).
-          */
-         {IP_VS_SCTP_S_INIT_CLI /* IP_VS_SCTP_EVE_INIT_CLI */ },
-         {IP_VS_SCTP_S_INIT_SER /* IP_VS_SCTP_EVE_INIT_SER */ },
-         /*
-          * Unexpected INIT_ACK by the client, let us close the connection
-          */
-         {IP_VS_SCTP_S_CLOSED /* IP_VS_SCTP_EVE_INIT_ACK_CLI */ },
-         /*
-          * INIT_ACK resent by the server, let us move to same state
-          */
-         {IP_VS_SCTP_S_INIT_ACK_SER /* IP_VS_SCTP_EVE_INIT_ACK_SER */ },
-         /*
-          * Client send the ECHO, this is what we are expecting,
-          * move to ECHO_CLI
-          */
-         {IP_VS_SCTP_S_ECHO_CLI /* IP_VS_SCTP_EVE_COOKIE_ECHO_CLI */ },
-         /*
-          * ECHO received from the server, Not sure what to do,
-          * let us close it
-          */
-         {IP_VS_SCTP_S_CLOSED /* IP_VS_SCTP_EVE_COOKIE_ECHO_SER */ },
-         /*
-          * COOKIE ACK from client, let us stay in the same state
-          */
-         {IP_VS_SCTP_S_INIT_ACK_SER /* IP_VS_SCTP_EVE_COOKIE_ACK_CLI */ },
-         /*
-          * COOKIE ACK from server, hmm... this should not happen, lets close
-          * the connection.
-          */
-         {IP_VS_SCTP_S_CLOSED /* IP_VS_SCTP_EVE_COOKIE_ACK_SER */ },
-         {IP_VS_SCTP_S_CLOSED /* IP_VS_SCTP_EVE_ABORT_CLI */ },
-         {IP_VS_SCTP_S_CLOSED /* IP_VS_SCTP_EVE_ABORT_SER */ },
-         {IP_VS_SCTP_S_CLOSED /* IP_VS_SCTP_EVE_SHUT_CLI */ },
-         {IP_VS_SCTP_S_CLOSED /* IP_VS_SCTP_EVE_SHUT_SER */ },
-         {IP_VS_SCTP_S_CLOSED /* IP_VS_SCTP_EVE_SHUT_ACK_CLI */ },
-         {IP_VS_SCTP_S_CLOSED /* IP_VS_SCTP_EVE_SHUT_ACK_SER */ },
-         {IP_VS_SCTP_S_CLOSED /* IP_VS_SCTP_EVE_SHUT_COM_CLI */ },
-         {IP_VS_SCTP_S_CLOSED /* IP_VS_SCTP_EVE_SHUT_COM_SER */ }
-         },
-        /*
-         * State : IP_VS_SCTP_S_ECHO_CLI
-         * Cient  sent ECHO and waiting COOKEI ACK from the Server
-         */
-        {{IP_VS_SCTP_S_CLOSED /* IP_VS_SCTP_EVE_DATA_CLI */ },
-         {IP_VS_SCTP_S_CLOSED /* IP_VS_SCTP_EVE_DATA_SER */ },
-         /*
-          * We have got an INIT from client. From the spec.“Upon receipt of
-          * an INIT in the COOKIE-WAIT state, an endpoint MUST respond with
-          * an INIT ACK using the same parameters it sent in its  original
-          * INIT chunk (including its Initiate Tag, unchanged”).
-          */
-         {IP_VS_SCTP_S_INIT_CLI /* IP_VS_SCTP_EVE_INIT_CLI */ },
-         {IP_VS_SCTP_S_INIT_SER /* IP_VS_SCTP_EVE_INIT_SER */ },
-         /*
-          * INIT_ACK has been by the client, let us close the connection
-          */
-         {IP_VS_SCTP_S_CLOSED /* IP_VS_SCTP_EVE_INIT_ACK_CLI */ },
-         /*
-          * INIT_ACK sent by the server, Unexpected INIT ACK, spec says,
-          * “If an INIT ACK is received by an endpoint in any state other
-          * than the COOKIE-WAIT state, the endpoint should discard the
-          * INIT ACK chunk”. Stay in the same state
-          */
-         {IP_VS_SCTP_S_ECHO_CLI /* IP_VS_SCTP_EVE_INIT_ACK_SER */ },
-         /*
-          * Client resent the ECHO, let us stay in the same state
-          */
-         {IP_VS_SCTP_S_ECHO_CLI /* IP_VS_SCTP_EVE_COOKIE_ECHO_CLI */ },
-         /*
-          * ECHO received from the server, Not sure what to do,
-          * let us close it
-          */
-         {IP_VS_SCTP_S_CLOSED /* IP_VS_SCTP_EVE_COOKIE_ECHO_SER */ },
-         /*
-          * COOKIE ACK from client, this shoud not happen, let's close the
-          * connection
-          */
-         {IP_VS_SCTP_S_CLOSED /* IP_VS_SCTP_EVE_COOKIE_ACK_CLI */ },
-         /*
-          * COOKIE ACK from server, this is what we are awaiting,lets move to
-          * ESTABLISHED.
-          */
-         {IP_VS_SCTP_S_ESTABLISHED /* IP_VS_SCTP_EVE_COOKIE_ACK_SER */ },
-         {IP_VS_SCTP_S_CLOSED /* IP_VS_SCTP_EVE_ABORT_CLI */ },
-         {IP_VS_SCTP_S_CLOSED /* IP_VS_SCTP_EVE_ABORT_SER */ },
-         {IP_VS_SCTP_S_CLOSED /* IP_VS_SCTP_EVE_SHUT_CLI */ },
-         {IP_VS_SCTP_S_CLOSED /* IP_VS_SCTP_EVE_SHUT_SER */ },
-         {IP_VS_SCTP_S_CLOSED /* IP_VS_SCTP_EVE_SHUT_ACK_CLI */ },
-         {IP_VS_SCTP_S_CLOSED /* IP_VS_SCTP_EVE_SHUT_ACK_SER */ },
-         {IP_VS_SCTP_S_CLOSED /* IP_VS_SCTP_EVE_SHUT_COM_CLI */ },
-         {IP_VS_SCTP_S_CLOSED /* IP_VS_SCTP_EVE_SHUT_COM_SER */ }
-         },
-        /*
-         * State : IP_VS_SCTP_S_ECHO_SER
-         * Server sent ECHO and waiting COOKEI ACK from the client
-         */
-        {{IP_VS_SCTP_S_CLOSED /* IP_VS_SCTP_EVE_DATA_CLI */ },
-         {IP_VS_SCTP_S_CLOSED /* IP_VS_SCTP_EVE_DATA_SER */ },
-         /*
-          * We have got an INIT from client. From the spec.“Upon receipt of
-          * an INIT in the COOKIE-WAIT state, an endpoint MUST respond with
-          * an INIT ACK using the same parameters it sent in its  original
-          * INIT chunk (including its Initiate Tag, unchanged”).
-          */
-         {IP_VS_SCTP_S_INIT_CLI /* IP_VS_SCTP_EVE_INIT_CLI */ },
-         {IP_VS_SCTP_S_INIT_SER /* IP_VS_SCTP_EVE_INIT_SER */ },
-         /*
-          * INIT_ACK sent by the server, Unexpected INIT ACK, spec says,
-          * “If an INIT ACK is received by an endpoint in any state other
-          * than the COOKIE-WAIT state, the endpoint should discard the
-          * INIT ACK chunk”. Stay in the same state
-          */
-         {IP_VS_SCTP_S_ECHO_SER /* IP_VS_SCTP_EVE_INIT_ACK_CLI */ },
-         /*
-          * INIT_ACK has been by the server, let us close the connection
-          */
-         {IP_VS_SCTP_S_CLOSED /* IP_VS_SCTP_EVE_INIT_ACK_SER */ },
-         /*
-          * Client sent the ECHO, not sure what to do, let's close the
-          * connection.
-          */
-         {IP_VS_SCTP_S_CLOSED /* IP_VS_SCTP_EVE_COOKIE_ECHO_CLI */ },
-         /*
-          * ECHO resent by the server, stay in the same state
-          */
-         {IP_VS_SCTP_S_ECHO_SER /* IP_VS_SCTP_EVE_COOKIE_ECHO_SER */ },
-         /*
-          * COOKIE ACK from client, this is what we are expecting, let's move
-          * to ESTABLISHED.
-          */
-         {IP_VS_SCTP_S_ESTABLISHED /* IP_VS_SCTP_EVE_COOKIE_ACK_CLI */ },
-         /*
-          * COOKIE ACK from server, this should not happen, lets close the
-          * connection.
-          */
-         {IP_VS_SCTP_S_CLOSED /* IP_VS_SCTP_EVE_COOKIE_ACK_SER */ },
-         {IP_VS_SCTP_S_CLOSED /* IP_VS_SCTP_EVE_ABORT_CLI */ },
-         {IP_VS_SCTP_S_CLOSED /* IP_VS_SCTP_EVE_ABORT_SER */ },
-         {IP_VS_SCTP_S_CLOSED /* IP_VS_SCTP_EVE_SHUT_CLI */ },
-         {IP_VS_SCTP_S_CLOSED /* IP_VS_SCTP_EVE_SHUT_SER */ },
-         {IP_VS_SCTP_S_CLOSED /* IP_VS_SCTP_EVE_SHUT_ACK_CLI */ },
-         {IP_VS_SCTP_S_CLOSED /* IP_VS_SCTP_EVE_SHUT_ACK_SER */ },
-         {IP_VS_SCTP_S_CLOSED /* IP_VS_SCTP_EVE_SHUT_COM_CLI */ },
-         {IP_VS_SCTP_S_CLOSED /* IP_VS_SCTP_EVE_SHUT_COM_SER */ }
-         },
-        /*
-         * State : IP_VS_SCTP_S_ESTABLISHED
-         * Association established
-         */
-        {{IP_VS_SCTP_S_ESTABLISHED /* IP_VS_SCTP_EVE_DATA_CLI */ },
-         {IP_VS_SCTP_S_ESTABLISHED /* IP_VS_SCTP_EVE_DATA_SER */ },
-         /*
-          * We have got an INIT from client. From the spec.“Upon receipt of
-          * an INIT in the COOKIE-WAIT state, an endpoint MUST respond with
-          * an INIT ACK using the same parameters it sent in its  original
-          * INIT chunk (including its Initiate Tag, unchanged”).
-          */
-         {IP_VS_SCTP_S_INIT_CLI /* IP_VS_SCTP_EVE_INIT_CLI */ },
-         {IP_VS_SCTP_S_INIT_SER /* IP_VS_SCTP_EVE_INIT_SER */ },
-         /*
-          * INIT_ACK sent by the server, Unexpected INIT ACK, spec says,
-          * “If an INIT ACK is received by an endpoint in any state other
-          * than the COOKIE-WAIT state, the endpoint should discard the
-          * INIT ACK chunk”. Stay in the same state
-          */
-         {IP_VS_SCTP_S_ESTABLISHED /* IP_VS_SCTP_EVE_INIT_ACK_CLI */ },
-         {IP_VS_SCTP_S_ESTABLISHED /* IP_VS_SCTP_EVE_INIT_ACK_SER */ },
-         /*
-          * Client sent ECHO, Spec(sec 5.2.4) says it may be handled by the
-          * peer and peer shall move to the ESTABISHED. if it doesn't handle
-          * it will send ERROR chunk. So, stay in the same state
-          */
-         {IP_VS_SCTP_S_ESTABLISHED /* IP_VS_SCTP_EVE_COOKIE_ECHO_CLI */ },
-         {IP_VS_SCTP_S_ESTABLISHED /* IP_VS_SCTP_EVE_COOKIE_ECHO_SER */ },
-         /*
-          * COOKIE ACK from client, not sure what to do stay in the same state
-          */
-         {IP_VS_SCTP_S_ESTABLISHED /* IP_VS_SCTP_EVE_COOKIE_ACK_CLI */ },
-         {IP_VS_SCTP_S_ESTABLISHED /* IP_VS_SCTP_EVE_COOKIE_ACK_SER */ },
-         {IP_VS_SCTP_S_CLOSED /* IP_VS_SCTP_EVE_ABORT_CLI */ },
-         {IP_VS_SCTP_S_CLOSED /* IP_VS_SCTP_EVE_ABORT_SER */ },
-         /*
-          * SHUTDOWN from the client, move to SHUDDOWN_CLI
-          */
-         {IP_VS_SCTP_S_SHUT_CLI /* IP_VS_SCTP_EVE_SHUT_CLI */ },
-         /*
-          * SHUTDOWN from the server, move to SHUTDOWN_SER
-          */
-         {IP_VS_SCTP_S_SHUT_SER /* IP_VS_SCTP_EVE_SHUT_SER */ },
-         /*
-          * client sent SHUDTDOWN_ACK, this should not happen, let's close
-          * the connection
-          */
-         {IP_VS_SCTP_S_CLOSED /* IP_VS_SCTP_EVE_SHUT_ACK_CLI */ },
-         {IP_VS_SCTP_S_CLOSED /* IP_VS_SCTP_EVE_SHUT_ACK_SER */ },
-         {IP_VS_SCTP_S_CLOSED /* IP_VS_SCTP_EVE_SHUT_COM_CLI */ },
-         {IP_VS_SCTP_S_CLOSED /* IP_VS_SCTP_EVE_SHUT_COM_SER */ }
-         },
-        /*
-         * State : IP_VS_SCTP_S_SHUT_CLI
-         * SHUTDOWN sent from the client, waitinf for SHUT ACK from the server
-         */
-        /*
-         * We received the data chuck, keep the state unchanged. I assume
-         * that still data chuncks  can be received by both the peers in
-         * SHUDOWN state
-         */
-
-        {{IP_VS_SCTP_S_SHUT_CLI /* IP_VS_SCTP_EVE_DATA_CLI */ },
-         {IP_VS_SCTP_S_SHUT_CLI /* IP_VS_SCTP_EVE_DATA_SER */ },
-         /*
-          * We have got an INIT from client. From the spec.“Upon receipt of
-          * an INIT in the COOKIE-WAIT state, an endpoint MUST respond with
-          * an INIT ACK using the same parameters it sent in its  original
-          * INIT chunk (including its Initiate Tag, unchanged”).
-          */
-         {IP_VS_SCTP_S_INIT_CLI /* IP_VS_SCTP_EVE_INIT_CLI */ },
-         {IP_VS_SCTP_S_INIT_SER /* IP_VS_SCTP_EVE_INIT_SER */ },
-         /*
-          * INIT_ACK sent by the server, Unexpected INIT ACK, spec says,
-          * “If an INIT ACK is received by an endpoint in any state other
-          * than the COOKIE-WAIT state, the endpoint should discard the
-          * INIT ACK chunk”. Stay in the same state
-          */
-         {IP_VS_SCTP_S_SHUT_CLI /* IP_VS_SCTP_EVE_INIT_ACK_CLI */ },
-         {IP_VS_SCTP_S_SHUT_CLI /* IP_VS_SCTP_EVE_INIT_ACK_SER */ },
-         /*
-          * Client sent ECHO, Spec(sec 5.2.4) says it may be handled by the
-          * peer and peer shall move to the ESTABISHED. if it doesn't handle
-          * it will send ERROR chunk. So, stay in the same state
-          */
-         {IP_VS_SCTP_S_ESTABLISHED /* IP_VS_SCTP_EVE_COOKIE_ECHO_CLI */ },
-         {IP_VS_SCTP_S_ESTABLISHED /* IP_VS_SCTP_EVE_COOKIE_ECHO_SER */ },
-         /*
-          * COOKIE ACK from client, not sure what to do stay in the same state
-          */
-         {IP_VS_SCTP_S_SHUT_CLI /* IP_VS_SCTP_EVE_COOKIE_ACK_CLI */ },
-         {IP_VS_SCTP_S_SHUT_CLI /* IP_VS_SCTP_EVE_COOKIE_ACK_SER */ },
-         {IP_VS_SCTP_S_CLOSED /* IP_VS_SCTP_EVE_ABORT_CLI */ },
-         {IP_VS_SCTP_S_CLOSED /* IP_VS_SCTP_EVE_ABORT_SER */ },
-         /*
-          * SHUTDOWN resent from the client, move to SHUDDOWN_CLI
-          */
-         {IP_VS_SCTP_S_SHUT_CLI /* IP_VS_SCTP_EVE_SHUT_CLI */ },
-         /*
-          * SHUTDOWN from the server, move to SHUTDOWN_SER
-          */
-         {IP_VS_SCTP_S_SHUT_SER /* IP_VS_SCTP_EVE_SHUT_SER */ },
-         /*
-          * client sent SHUDTDOWN_ACK, this should not happen, let's close
-          * the connection
-          */
-         {IP_VS_SCTP_S_CLOSED /* IP_VS_SCTP_EVE_SHUT_ACK_CLI */ },
-         /*
-          * Server sent SHUTDOWN ACK, this is what we are expecting, let's move
-          * to SHUDOWN_ACK_SER
-          */
-         {IP_VS_SCTP_S_SHUT_ACK_SER /* IP_VS_SCTP_EVE_SHUT_ACK_SER */ },
-         /*
-          * SHUTDOWN COM from client, this should not happen, let's close the
-          * connection
-          */
-         {IP_VS_SCTP_S_CLOSED /* IP_VS_SCTP_EVE_SHUT_COM_CLI */ },
-         {IP_VS_SCTP_S_CLOSED /* IP_VS_SCTP_EVE_SHUT_COM_SER */ }
-         },
-        /*
-         * State : IP_VS_SCTP_S_SHUT_SER
-         * SHUTDOWN sent from the server, waitinf for SHUTDOWN ACK from client
-         */
-        /*
-         * We received the data chuck, keep the state unchanged. I assume
-         * that still data chuncks  can be received by both the peers in
-         * SHUDOWN state
-         */
-
-        {{IP_VS_SCTP_S_SHUT_SER /* IP_VS_SCTP_EVE_DATA_CLI */ },
-         {IP_VS_SCTP_S_SHUT_SER /* IP_VS_SCTP_EVE_DATA_SER */ },
-         /*
-          * We have got an INIT from client. From the spec.“Upon receipt of
-          * an INIT in the COOKIE-WAIT state, an endpoint MUST respond with
-          * an INIT ACK using the same parameters it sent in its  original
-          * INIT chunk (including its Initiate Tag, unchanged”).
-          */
-         {IP_VS_SCTP_S_INIT_CLI /* IP_VS_SCTP_EVE_INIT_CLI */ },
-         {IP_VS_SCTP_S_INIT_SER /* IP_VS_SCTP_EVE_INIT_SER */ },
-         /*
-          * INIT_ACK sent by the server, Unexpected INIT ACK, spec says,
-          * “If an INIT ACK is received by an endpoint in any state other
-          * than the COOKIE-WAIT state, the endpoint should discard the
-          * INIT ACK chunk”. Stay in the same state
-          */
-         {IP_VS_SCTP_S_SHUT_SER /* IP_VS_SCTP_EVE_INIT_ACK_CLI */ },
-         {IP_VS_SCTP_S_SHUT_SER /* IP_VS_SCTP_EVE_INIT_ACK_SER */ },
-         /*
-          * Client sent ECHO, Spec(sec 5.2.4) says it may be handled by the
-          * peer and peer shall move to the ESTABISHED. if it doesn't handle
-          * it will send ERROR chunk. So, stay in the same state
-          */
-         {IP_VS_SCTP_S_ESTABLISHED /* IP_VS_SCTP_EVE_COOKIE_ECHO_CLI */ },
-         {IP_VS_SCTP_S_ESTABLISHED /* IP_VS_SCTP_EVE_COOKIE_ECHO_SER */ },
-         /*
-          * COOKIE ACK from client, not sure what to do stay in the same state
-          */
-         {IP_VS_SCTP_S_SHUT_SER /* IP_VS_SCTP_EVE_COOKIE_ACK_CLI */ },
-         {IP_VS_SCTP_S_SHUT_SER /* IP_VS_SCTP_EVE_COOKIE_ACK_SER */ },
-         {IP_VS_SCTP_S_CLOSED /* IP_VS_SCTP_EVE_ABORT_CLI */ },
-         {IP_VS_SCTP_S_CLOSED /* IP_VS_SCTP_EVE_ABORT_SER */ },
-         /*
-          * SHUTDOWN resent from the client, move to SHUDDOWN_CLI
-          */
-         {IP_VS_SCTP_S_SHUT_CLI /* IP_VS_SCTP_EVE_SHUT_CLI */ },
-         /*
-          * SHUTDOWN resent from the server, move to SHUTDOWN_SER
-          */
-         {IP_VS_SCTP_S_SHUT_SER /* IP_VS_SCTP_EVE_SHUT_SER */ },
-         /*
-          * client sent SHUDTDOWN_ACK, this is what we are expecting, let's
-          * move to SHUT_ACK_CLI
-          */
-         {IP_VS_SCTP_S_SHUT_ACK_CLI /* IP_VS_SCTP_EVE_SHUT_ACK_CLI */ },
-         /*
-          * Server sent SHUTDOWN ACK, this should not happen, let's close the
-          * connection
-          */
-         {IP_VS_SCTP_S_CLOSED /* IP_VS_SCTP_EVE_SHUT_ACK_SER */ },
-         /*
-          * SHUTDOWN COM from client, this should not happen, let's close the
-          * connection
-          */
-         {IP_VS_SCTP_S_CLOSED /* IP_VS_SCTP_EVE_SHUT_COM_CLI */ },
-         {IP_VS_SCTP_S_CLOSED /* IP_VS_SCTP_EVE_SHUT_COM_SER */ }
-         },
-
-        /*
-         * State : IP_VS_SCTP_S_SHUT_ACK_CLI
-         * SHUTDOWN ACK from the client, awaiting for SHUTDOWN COM from server
-         */
-        /*
-         * We received the data chuck, keep the state unchanged. I assume
-         * that still data chuncks  can be received by both the peers in
-         * SHUDOWN state
-         */
-
-        {{IP_VS_SCTP_S_SHUT_ACK_CLI /* IP_VS_SCTP_EVE_DATA_CLI */ },
-         {IP_VS_SCTP_S_SHUT_ACK_CLI /* IP_VS_SCTP_EVE_DATA_SER */ },
-         /*
-          * We have got an INIT from client. From the spec.“Upon receipt of
-          * an INIT in the COOKIE-WAIT state, an endpoint MUST respond with
-          * an INIT ACK using the same parameters it sent in its  original
-          * INIT chunk (including its Initiate Tag, unchanged”).
-          */
-         {IP_VS_SCTP_S_INIT_CLI /* IP_VS_SCTP_EVE_INIT_CLI */ },
-         {IP_VS_SCTP_S_INIT_SER /* IP_VS_SCTP_EVE_INIT_SER */ },
-         /*
-          * INIT_ACK sent by the server, Unexpected INIT ACK, spec says,
-          * “If an INIT ACK is received by an endpoint in any state other
-          * than the COOKIE-WAIT state, the endpoint should discard the
-          * INIT ACK chunk”. Stay in the same state
-          */
-         {IP_VS_SCTP_S_SHUT_ACK_CLI /* IP_VS_SCTP_EVE_INIT_ACK_CLI */ },
-         {IP_VS_SCTP_S_SHUT_ACK_CLI /* IP_VS_SCTP_EVE_INIT_ACK_SER */ },
-         /*
-          * Client sent ECHO, Spec(sec 5.2.4) says it may be handled by the
-          * peer and peer shall move to the ESTABISHED. if it doesn't handle
-          * it will send ERROR chunk. So, stay in the same state
-          */
-         {IP_VS_SCTP_S_ESTABLISHED /* IP_VS_SCTP_EVE_COOKIE_ECHO_CLI */ },
-         {IP_VS_SCTP_S_ESTABLISHED /* IP_VS_SCTP_EVE_COOKIE_ECHO_SER */ },
-         /*
-          * COOKIE ACK from client, not sure what to do stay in the same state
-          */
-         {IP_VS_SCTP_S_SHUT_ACK_CLI /* IP_VS_SCTP_EVE_COOKIE_ACK_CLI */ },
-         {IP_VS_SCTP_S_SHUT_ACK_CLI /* IP_VS_SCTP_EVE_COOKIE_ACK_SER */ },
-         {IP_VS_SCTP_S_CLOSED /* IP_VS_SCTP_EVE_ABORT_CLI */ },
-         {IP_VS_SCTP_S_CLOSED /* IP_VS_SCTP_EVE_ABORT_SER */ },
-         /*
-          * SHUTDOWN sent from the client, move to SHUDDOWN_CLI
-          */
-         {IP_VS_SCTP_S_SHUT_CLI /* IP_VS_SCTP_EVE_SHUT_CLI */ },
-         /*
-          * SHUTDOWN sent from the server, move to SHUTDOWN_SER
-          */
-         {IP_VS_SCTP_S_SHUT_SER /* IP_VS_SCTP_EVE_SHUT_SER */ },
-         /*
-          * client resent SHUDTDOWN_ACK, let's stay in the same state
-          */
-         {IP_VS_SCTP_S_SHUT_ACK_CLI /* IP_VS_SCTP_EVE_SHUT_ACK_CLI */ },
-         /*
-          * Server sent SHUTDOWN ACK, this should not happen, let's close the
-          * connection
-          */
-         {IP_VS_SCTP_S_CLOSED /* IP_VS_SCTP_EVE_SHUT_ACK_SER */ },
-         /*
-          * SHUTDOWN COM from client, this should not happen, let's close the
-          * connection
-          */
-         {IP_VS_SCTP_S_CLOSED /* IP_VS_SCTP_EVE_SHUT_COM_CLI */ },
-         /*
-          * SHUTDOWN COMPLETE from server this is what we are expecting.
-          */
-         {IP_VS_SCTP_S_CLOSED /* IP_VS_SCTP_EVE_SHUT_COM_SER */ }
-         },
-
-        /*
-         * State : IP_VS_SCTP_S_SHUT_ACK_SER
-         * SHUTDOWN ACK from the server, awaiting for SHUTDOWN COM from client
-         */
-        /*
-         * We received the data chuck, keep the state unchanged. I assume
-         * that still data chuncks  can be received by both the peers in
-         * SHUDOWN state
-         */
+/* SCTP States:
+ * See RFC 2960, 4. SCTP Association State Diagram
+ *
+ * New states (not in diagram):
+ * - INIT1 state: use shorter timeout for dropped INIT packets
+ * - REJECTED state: use shorter timeout if INIT is rejected with ABORT
+ * - INIT, COOKIE_SENT, COOKIE_REPLIED, COOKIE states: for better debugging
+ *
+ * The states are as seen in real server. In the diagram, INIT1, INIT,
+ * COOKIE_SENT and COOKIE_REPLIED processing happens in CLOSED state.
+ *
+ * States as per packets from client (C) and server (S):
+ *
+ * Setup of client connection:
+ * IP_VS_SCTP_S_INIT1: First C:INIT sent, wait for S:INIT-ACK
+ * IP_VS_SCTP_S_INIT: Next C:INIT sent, wait for S:INIT-ACK
+ * IP_VS_SCTP_S_COOKIE_SENT: S:INIT-ACK sent, wait for C:COOKIE-ECHO
+ * IP_VS_SCTP_S_COOKIE_REPLIED: C:COOKIE-ECHO sent, wait for S:COOKIE-ACK
+ *
+ * Setup of server connection:
+ * IP_VS_SCTP_S_COOKIE_WAIT: S:INIT sent, wait for C:INIT-ACK
+ * IP_VS_SCTP_S_COOKIE: C:INIT-ACK sent, wait for S:COOKIE-ECHO
+ * IP_VS_SCTP_S_COOKIE_ECHOED: S:COOKIE-ECHO sent, wait for C:COOKIE-ACK
+ */
 
-        {{IP_VS_SCTP_S_SHUT_ACK_SER /* IP_VS_SCTP_EVE_DATA_CLI */ },
-         {IP_VS_SCTP_S_SHUT_ACK_SER /* IP_VS_SCTP_EVE_DATA_SER */ },
-         /*
-          * We have got an INIT from client. From the spec.“Upon receipt of
-          * an INIT in the COOKIE-WAIT state, an endpoint MUST respond with
-          * an INIT ACK using the same parameters it sent in its  original
-          * INIT chunk (including its Initiate Tag, unchanged”).
-          */
-         {IP_VS_SCTP_S_INIT_CLI /* IP_VS_SCTP_EVE_INIT_CLI */ },
-         {IP_VS_SCTP_S_INIT_SER /* IP_VS_SCTP_EVE_INIT_SER */ },
-         /*
-          * INIT_ACK sent by the server, Unexpected INIT ACK, spec says,
-          * “If an INIT ACK is received by an endpoint in any state other
-          * than the COOKIE-WAIT state, the endpoint should discard the
-          * INIT ACK chunk”. Stay in the same state
-          */
-         {IP_VS_SCTP_S_SHUT_ACK_SER /* IP_VS_SCTP_EVE_INIT_ACK_CLI */ },
-         {IP_VS_SCTP_S_SHUT_ACK_SER /* IP_VS_SCTP_EVE_INIT_ACK_SER */ },
-         /*
-          * Client sent ECHO, Spec(sec 5.2.4) says it may be handled by the
-          * peer and peer shall move to the ESTABISHED. if it doesn't handle
-          * it will send ERROR chunk. So, stay in the same state
-          */
-         {IP_VS_SCTP_S_ESTABLISHED /* IP_VS_SCTP_EVE_COOKIE_ECHO_CLI */ },
-         {IP_VS_SCTP_S_ESTABLISHED /* IP_VS_SCTP_EVE_COOKIE_ECHO_SER */ },
-         /*
-          * COOKIE ACK from client, not sure what to do stay in the same state
-          */
-         {IP_VS_SCTP_S_SHUT_ACK_SER /* IP_VS_SCTP_EVE_COOKIE_ACK_CLI */ },
-         {IP_VS_SCTP_S_SHUT_ACK_SER /* IP_VS_SCTP_EVE_COOKIE_ACK_SER */ },
-         {IP_VS_SCTP_S_CLOSED /* IP_VS_SCTP_EVE_ABORT_CLI */ },
-         {IP_VS_SCTP_S_CLOSED /* IP_VS_SCTP_EVE_ABORT_SER */ },
-         /*
-          * SHUTDOWN sent from the client, move to SHUDDOWN_CLI
-          */
-         {IP_VS_SCTP_S_SHUT_CLI /* IP_VS_SCTP_EVE_SHUT_CLI */ },
-         /*
-          * SHUTDOWN sent from the server, move to SHUTDOWN_SER
-          */
-         {IP_VS_SCTP_S_SHUT_SER /* IP_VS_SCTP_EVE_SHUT_SER */ },
-         /*
-          * client sent SHUDTDOWN_ACK, this should not happen let's close
-          * the connection.
-          */
-         {IP_VS_SCTP_S_CLOSED /* IP_VS_SCTP_EVE_SHUT_ACK_CLI */ },
-         /*
-          * Server resent SHUTDOWN ACK, stay in the same state
-          */
-         {IP_VS_SCTP_S_SHUT_ACK_SER /* IP_VS_SCTP_EVE_SHUT_ACK_SER */ },
-         /*
-          * SHUTDOWN COM from client, this what we are expecting, let's close
-          * the connection
-          */
-         {IP_VS_SCTP_S_CLOSED /* IP_VS_SCTP_EVE_SHUT_COM_CLI */ },
-         /*
-          * SHUTDOWN COMPLETE from server this should not happen.
-          */
-         {IP_VS_SCTP_S_CLOSED /* IP_VS_SCTP_EVE_SHUT_COM_SER */ }
-         },
-        /*
-         * State : IP_VS_SCTP_S_CLOSED
-         */
-        {{IP_VS_SCTP_S_CLOSED /* IP_VS_SCTP_EVE_DATA_CLI */ },
-         {IP_VS_SCTP_S_CLOSED /* IP_VS_SCTP_EVE_DATA_SER */ },
-         {IP_VS_SCTP_S_INIT_CLI /* IP_VS_SCTP_EVE_INIT_CLI */ },
-         {IP_VS_SCTP_S_INIT_SER /* IP_VS_SCTP_EVE_INIT_SER */ },
-         {IP_VS_SCTP_S_CLOSED /* IP_VS_SCTP_EVE_INIT_ACK_CLI */ },
-         {IP_VS_SCTP_S_CLOSED /* IP_VS_SCTP_EVE_INIT_ACK_SER */ },
-         {IP_VS_SCTP_S_CLOSED /* IP_VS_SCTP_EVE_COOKIE_ECHO_CLI */ },
-         {IP_VS_SCTP_S_CLOSED /* IP_VS_SCTP_EVE_COOKIE_ECHO_SER */ },
-         {IP_VS_SCTP_S_CLOSED /* IP_VS_SCTP_EVE_COOKIE_ACK_CLI */ },
-         {IP_VS_SCTP_S_CLOSED /* IP_VS_SCTP_EVE_COOKIE_ACK_SER */ },
-         {IP_VS_SCTP_S_CLOSED /* IP_VS_SCTP_EVE_ABORT_CLI */ },
-         {IP_VS_SCTP_S_CLOSED /* IP_VS_SCTP_EVE_ABORT_SER */ },
-         {IP_VS_SCTP_S_CLOSED /* IP_VS_SCTP_EVE_SHUT_CLI */ },
-         {IP_VS_SCTP_S_CLOSED /* IP_VS_SCTP_EVE_SHUT_SER */ },
-         {IP_VS_SCTP_S_CLOSED /* IP_VS_SCTP_EVE_SHUT_ACK_CLI */ },
-         {IP_VS_SCTP_S_CLOSED /* IP_VS_SCTP_EVE_SHUT_ACK_SER */ },
-         {IP_VS_SCTP_S_CLOSED /* IP_VS_SCTP_EVE_SHUT_COM_CLI */ },
-         {IP_VS_SCTP_S_CLOSED /* IP_VS_SCTP_EVE_SHUT_COM_SER */ }
-         }
+#define sNO IP_VS_SCTP_S_NONE
+#define sI1 IP_VS_SCTP_S_INIT1
+#define sIN IP_VS_SCTP_S_INIT
+#define sCS IP_VS_SCTP_S_COOKIE_SENT
+#define sCR IP_VS_SCTP_S_COOKIE_REPLIED
+#define sCW IP_VS_SCTP_S_COOKIE_WAIT
+#define sCO IP_VS_SCTP_S_COOKIE
+#define sCE IP_VS_SCTP_S_COOKIE_ECHOED
+#define sES IP_VS_SCTP_S_ESTABLISHED
+#define sSS IP_VS_SCTP_S_SHUTDOWN_SENT
+#define sSR IP_VS_SCTP_S_SHUTDOWN_RECEIVED
+#define sSA IP_VS_SCTP_S_SHUTDOWN_ACK_SENT
+#define sRJ IP_VS_SCTP_S_REJECTED
+#define sCL IP_VS_SCTP_S_CLOSED
+
+static const __u8 sctp_states
+        [IP_VS_DIR_LAST][IP_VS_SCTP_EVENT_LAST][IP_VS_SCTP_S_LAST] = {
+        { /* INPUT */
+/*        sNO, sI1, sIN, sCS, sCR, sCW, sCO, sCE, sES, sSS, sSR, sSA, sRJ, sCL*/
+/* d   */{sES, sI1, sIN, sCS, sCR, sCW, sCO, sCE, sES, sSS, sSR, sSA, sRJ, sCL},
+/* i   */{sI1, sIN, sIN, sCS, sCR, sCW, sCO, sCE, sES, sSS, sSR, sSA, sIN, sIN},
+/* i_a */{sCW, sCW, sCW, sCS, sCR, sCO, sCO, sCE, sES, sSS, sSR, sSA, sRJ, sCL},
+/* c_e */{sCR, sIN, sIN, sCR, sCR, sCW, sCO, sCE, sES, sSS, sSR, sSA, sRJ, sCL},
+/* c_a */{sES, sI1, sIN, sCS, sCR, sCW, sCO, sES, sES, sSS, sSR, sSA, sRJ, sCL},
+/* s   */{sSR, sI1, sIN, sCS, sCR, sCW, sCO, sCE, sSR, sSS, sSR, sSA, sRJ, sCL},
+/* s_a */{sCL, sIN, sIN, sCS, sCR, sCW, sCO, sCE, sES, sCL, sSR, sCL, sRJ, sCL},
+/* s_c */{sCL, sCL, sCL, sCS, sCR, sCW, sCO, sCE, sES, sSS, sSR, sCL, sRJ, sCL},
+/* err */{sCL, sI1, sIN, sCS, sCR, sCW, sCO, sCL, sES, sSS, sSR, sSA, sRJ, sCL},
+/* ab  */{sCL, sCL, sCL, sCL, sCL, sRJ, sCL, sCL, sCL, sCL, sCL, sCL, sCL, sCL},
+        },
+        { /* OUTPUT */
+/*        sNO, sI1, sIN, sCS, sCR, sCW, sCO, sCE, sES, sSS, sSR, sSA, sRJ, sCL*/
+/* d   */{sES, sI1, sIN, sCS, sCR, sCW, sCO, sCE, sES, sSS, sSR, sSA, sRJ, sCL},
+/* i   */{sCW, sCW, sCW, sCW, sCW, sCW, sCW, sCW, sES, sCW, sCW, sCW, sCW, sCW},
+/* i_a */{sCS, sCS, sCS, sCS, sCR, sCW, sCO, sCE, sES, sSS, sSR, sSA, sRJ, sCL},
+/* c_e */{sCE, sCE, sCE, sCE, sCE, sCE, sCE, sCE, sES, sSS, sSR, sSA, sRJ, sCL},
+/* c_a */{sES, sES, sES, sES, sES, sES, sES, sES, sES, sSS, sSR, sSA, sRJ, sCL},
+/* s   */{sSS, sSS, sSS, sSS, sSS, sSS, sSS, sSS, sSS, sSS, sSR, sSA, sRJ, sCL},
+/* s_a */{sSA, sSA, sSA, sSA, sSA, sCW, sCO, sCE, sES, sSA, sSA, sSA, sRJ, sCL},
+/* s_c */{sCL, sI1, sIN, sCS, sCR, sCW, sCO, sCE, sES, sSS, sSR, sSA, sRJ, sCL},
+/* err */{sCL, sCL, sCL, sCL, sCL, sCW, sCO, sCE, sES, sSS, sSR, sSA, sRJ, sCL},
+/* ab  */{sCL, sRJ, sCL, sCL, sCL, sCL, sCL, sCL, sCL, sCL, sCL, sCL, sCL, sCL},
+        },
+        { /* INPUT-ONLY */
+/*        sNO, sI1, sIN, sCS, sCR, sCW, sCO, sCE, sES, sSS, sSR, sSA, sRJ, sCL*/
+/* d   */{sES, sI1, sIN, sCS, sCR, sES, sCO, sCE, sES, sSS, sSR, sSA, sRJ, sCL},
+/* i   */{sI1, sIN, sIN, sIN, sIN, sIN, sCO, sCE, sES, sSS, sSR, sSA, sIN, sIN},
+/* i_a */{sCE, sCE, sCE, sCE, sCE, sCE, sCO, sCE, sES, sSS, sSR, sSA, sRJ, sCL},
+/* c_e */{sES, sES, sES, sES, sES, sES, sCO, sCE, sES, sSS, sSR, sSA, sRJ, sCL},
+/* c_a */{sES, sI1, sIN, sES, sES, sCW, sES, sES, sES, sSS, sSR, sSA, sRJ, sCL},
+/* s   */{sSR, sI1, sIN, sCS, sCR, sCW, sCO, sCE, sSR, sSS, sSR, sSA, sRJ, sCL},
+/* s_a */{sCL, sIN, sIN, sCS, sCR, sCW, sCO, sCE, sCL, sCL, sSR, sCL, sRJ, sCL},
+/* s_c */{sCL, sCL, sCL, sCL, sCL, sCW, sCO, sCE, sES, sSS, sCL, sCL, sRJ, sCL},
+/* err */{sCL, sI1, sIN, sCS, sCR, sCW, sCO, sCE, sES, sSS, sSR, sSA, sRJ, sCL},
+/* ab  */{sCL, sCL, sCL, sCL, sCL, sRJ, sCL, sCL, sCL, sCL, sCL, sCL, sCL, sCL},
+        },
 };
 
-/*
- *      Timeout table[state]
- */
+#define IP_VS_SCTP_MAX_RTO      ((60 + 1) * HZ)
+
+/* Timeout table[state] */
 static const int sctp_timeouts[IP_VS_SCTP_S_LAST + 1] = {
-        [IP_VS_SCTP_S_NONE]         =     2 * HZ,
-        [IP_VS_SCTP_S_INIT_CLI]     =     1 * 60 * HZ,
-        [IP_VS_SCTP_S_INIT_SER]     =     1 * 60 * HZ,
-        [IP_VS_SCTP_S_INIT_ACK_CLI] =     1 * 60 * HZ,
-        [IP_VS_SCTP_S_INIT_ACK_SER] =     1 * 60 * HZ,
-        [IP_VS_SCTP_S_ECHO_CLI]     =     1 * 60 * HZ,
-        [IP_VS_SCTP_S_ECHO_SER]     =     1 * 60 * HZ,
-        [IP_VS_SCTP_S_ESTABLISHED]  =    15 * 60 * HZ,
-        [IP_VS_SCTP_S_SHUT_CLI]     =     1 * 60 * HZ,
-        [IP_VS_SCTP_S_SHUT_SER]     =     1 * 60 * HZ,
-        [IP_VS_SCTP_S_SHUT_ACK_CLI] =     1 * 60 * HZ,
-        [IP_VS_SCTP_S_SHUT_ACK_SER] =     1 * 60 * HZ,
-        [IP_VS_SCTP_S_CLOSED]       =    10 * HZ,
-        [IP_VS_SCTP_S_LAST]         =     2 * HZ,
+        [IP_VS_SCTP_S_NONE]                     = 2 * HZ,
+        [IP_VS_SCTP_S_INIT1]                    = (0 + 3 + 1) * HZ,
+        [IP_VS_SCTP_S_INIT]                     = IP_VS_SCTP_MAX_RTO,
+        [IP_VS_SCTP_S_COOKIE_SENT]              = IP_VS_SCTP_MAX_RTO,
+        [IP_VS_SCTP_S_COOKIE_REPLIED]           = IP_VS_SCTP_MAX_RTO,
+        [IP_VS_SCTP_S_COOKIE_WAIT]              = IP_VS_SCTP_MAX_RTO,
+        [IP_VS_SCTP_S_COOKIE]                   = IP_VS_SCTP_MAX_RTO,
+        [IP_VS_SCTP_S_COOKIE_ECHOED]            = IP_VS_SCTP_MAX_RTO,
+        [IP_VS_SCTP_S_ESTABLISHED]              = 15 * 60 * HZ,
+        [IP_VS_SCTP_S_SHUTDOWN_SENT]            = IP_VS_SCTP_MAX_RTO,
+        [IP_VS_SCTP_S_SHUTDOWN_RECEIVED]        = IP_VS_SCTP_MAX_RTO,
+        [IP_VS_SCTP_S_SHUTDOWN_ACK_SENT]        = IP_VS_SCTP_MAX_RTO,
+        [IP_VS_SCTP_S_REJECTED]                 = (0 + 3 + 1) * HZ,
+        [IP_VS_SCTP_S_CLOSED]                   = IP_VS_SCTP_MAX_RTO,
+        [IP_VS_SCTP_S_LAST]                     = 2 * HZ,
 };
 
 static const char *sctp_state_name_table[IP_VS_SCTP_S_LAST + 1] = {
-        [IP_VS_SCTP_S_NONE]         =    "NONE",
-        [IP_VS_SCTP_S_INIT_CLI]     =    "INIT_CLI",
-        [IP_VS_SCTP_S_INIT_SER]     =    "INIT_SER",
-        [IP_VS_SCTP_S_INIT_ACK_CLI] =    "INIT_ACK_CLI",
-        [IP_VS_SCTP_S_INIT_ACK_SER] =    "INIT_ACK_SER",
-        [IP_VS_SCTP_S_ECHO_CLI]     =    "COOKIE_ECHO_CLI",
-        [IP_VS_SCTP_S_ECHO_SER]     =    "COOKIE_ECHO_SER",
-        [IP_VS_SCTP_S_ESTABLISHED]  =    "ESTABISHED",
-        [IP_VS_SCTP_S_SHUT_CLI]     =    "SHUTDOWN_CLI",
-        [IP_VS_SCTP_S_SHUT_SER]     =    "SHUTDOWN_SER",
-        [IP_VS_SCTP_S_SHUT_ACK_CLI] =    "SHUTDOWN_ACK_CLI",
-        [IP_VS_SCTP_S_SHUT_ACK_SER] =    "SHUTDOWN_ACK_SER",
-        [IP_VS_SCTP_S_CLOSED]       =    "CLOSED",
-        [IP_VS_SCTP_S_LAST]         =    "BUG!"
+        [IP_VS_SCTP_S_NONE]                     = "NONE",
+        [IP_VS_SCTP_S_INIT1]                    = "INIT1",
+        [IP_VS_SCTP_S_INIT]                     = "INIT",
+        [IP_VS_SCTP_S_COOKIE_SENT]              = "C-SENT",
+        [IP_VS_SCTP_S_COOKIE_REPLIED]           = "C-REPLIED",
+        [IP_VS_SCTP_S_COOKIE_WAIT]              = "C-WAIT",
+        [IP_VS_SCTP_S_COOKIE]                   = "COOKIE",
+        [IP_VS_SCTP_S_COOKIE_ECHOED]            = "C-ECHOED",
+        [IP_VS_SCTP_S_ESTABLISHED]              = "ESTABLISHED",
+        [IP_VS_SCTP_S_SHUTDOWN_SENT]            = "S-SENT",
+        [IP_VS_SCTP_S_SHUTDOWN_RECEIVED]        = "S-RECEIVED",
+        [IP_VS_SCTP_S_SHUTDOWN_ACK_SENT]        = "S-ACK-SENT",
+        [IP_VS_SCTP_S_REJECTED]                 = "REJECTED",
+        [IP_VS_SCTP_S_CLOSED]                   = "CLOSED",
+        [IP_VS_SCTP_S_LAST]                     = "BUG!",
 };
 
 
@@ -943,17 +394,20 @@ set_sctp_state(struct ip_vs_proto_data *pd, struct ip_vs_conn *cp,
                 }
         }
 
-        event = sctp_events[chunk_type];
+        event = (chunk_type < sizeof(sctp_events)) ?
+                sctp_events[chunk_type] : IP_VS_SCTP_DATA;
 
-        /*
-         *  If the direction is IP_VS_DIR_OUTPUT, this event is from server
-         */
-        if (direction == IP_VS_DIR_OUTPUT)
-                event++;
-        /*
-         * get next state
+        /* Update direction to INPUT_ONLY if necessary
+         * or delete NO_OUTPUT flag if output packet detected
          */
-        next_state = sctp_states_table[cp->state][event].next_state;
+        if (cp->flags & IP_VS_CONN_F_NOOUTPUT) {
+                if (direction == IP_VS_DIR_OUTPUT)
+                        cp->flags &= ~IP_VS_CONN_F_NOOUTPUT;
+                else
+                        direction = IP_VS_DIR_INPUT_ONLY;
+        }
+
+        next_state = sctp_states[direction][event][cp->state];
 
         if (next_state != cp->state) {
                 struct ip_vs_dest *dest = cp->dest;
diff --git a/net/netfilter/ipvs/ip_vs_proto_tcp.c b/net/netfilter/ipvs/ip_vs_proto_tcp.c
index 50a15944c6c1..e3a697234a98 100644
--- a/net/netfilter/ipvs/ip_vs_proto_tcp.c
+++ b/net/netfilter/ipvs/ip_vs_proto_tcp.c
@@ -39,6 +39,7 @@ tcp_conn_schedule(int af, struct sk_buff *skb, struct ip_vs_proto_data *pd,
         struct net *net;
         struct ip_vs_service *svc;
         struct tcphdr _tcph, *th;
+        struct netns_ipvs *ipvs;
 
         th = skb_header_pointer(skb, iph->len, sizeof(_tcph), &_tcph);
         if (th == NULL) {
@@ -46,14 +47,15 @@ tcp_conn_schedule(int af, struct sk_buff *skb, struct ip_vs_proto_data *pd,
                 return 0;
         }
         net = skb_net(skb);
+        ipvs = net_ipvs(net);
         /* No !th->ack check to allow scheduling on SYN+ACK for Active FTP */
         rcu_read_lock();
-        if (th->syn &&
+        if ((th->syn || sysctl_sloppy_tcp(ipvs)) && !th->rst &&
             (svc = ip_vs_service_find(net, af, skb->mark, iph->protocol,
                                       &iph->daddr, th->dest))) {
                 int ignored;
 
-                if (ip_vs_todrop(net_ipvs(net))) {
+                if (ip_vs_todrop(ipvs)) {
                         /*
                          * It seems that we are very loaded.
                          * We have to drop this packet :(
@@ -401,7 +403,7 @@ static struct tcp_states_t tcp_states [] = {
 /*        sNO, sES, sSS, sSR, sFW, sTW, sCL, sCW, sLA, sLI, sSA */
 /*syn*/ {{sSR, sES, sES, sSR, sSR, sSR, sSR, sSR, sSR, sSR, sSR }},
 /*fin*/ {{sCL, sCW, sSS, sTW, sTW, sTW, sCL, sCW, sLA, sLI, sTW }},
-/*ack*/ {{sCL, sES, sSS, sES, sFW, sTW, sCL, sCW, sCL, sLI, sES }},
+/*ack*/ {{sES, sES, sSS, sES, sFW, sTW, sCL, sCW, sCL, sLI, sES }},
 /*rst*/ {{sCL, sCL, sCL, sSR, sCL, sCL, sCL, sCL, sLA, sLI, sSR }},
 
 /*      OUTPUT */
@@ -415,7 +417,7 @@ static struct tcp_states_t tcp_states [] = {
 /*        sNO, sES, sSS, sSR, sFW, sTW, sCL, sCW, sLA, sLI, sSA */
 /*syn*/ {{sSR, sES, sES, sSR, sSR, sSR, sSR, sSR, sSR, sSR, sSR }},
 /*fin*/ {{sCL, sFW, sSS, sTW, sFW, sTW, sCL, sCW, sLA, sLI, sTW }},
-/*ack*/ {{sCL, sES, sSS, sES, sFW, sTW, sCL, sCW, sCL, sLI, sES }},
+/*ack*/ {{sES, sES, sSS, sES, sFW, sTW, sCL, sCW, sCL, sLI, sES }},
 /*rst*/ {{sCL, sCL, sCL, sSR, sCL, sCL, sCL, sCL, sLA, sLI, sCL }},
 };
 
@@ -424,7 +426,7 @@ static struct tcp_states_t tcp_states_dos [] = {
 /*        sNO, sES, sSS, sSR, sFW, sTW, sCL, sCW, sLA, sLI, sSA */
 /*syn*/ {{sSR, sES, sES, sSR, sSR, sSR, sSR, sSR, sSR, sSR, sSA }},
 /*fin*/ {{sCL, sCW, sSS, sTW, sTW, sTW, sCL, sCW, sLA, sLI, sSA }},
-/*ack*/ {{sCL, sES, sSS, sSR, sFW, sTW, sCL, sCW, sCL, sLI, sSA }},
+/*ack*/ {{sES, sES, sSS, sSR, sFW, sTW, sCL, sCW, sCL, sLI, sSA }},
 /*rst*/ {{sCL, sCL, sCL, sSR, sCL, sCL, sCL, sCL, sLA, sLI, sCL }},
 
 /*      OUTPUT */
@@ -438,7 +440,7 @@ static struct tcp_states_t tcp_states_dos [] = {
 /*        sNO, sES, sSS, sSR, sFW, sTW, sCL, sCW, sLA, sLI, sSA */
 /*syn*/ {{sSA, sES, sES, sSR, sSA, sSA, sSA, sSA, sSA, sSA, sSA }},
 /*fin*/ {{sCL, sFW, sSS, sTW, sFW, sTW, sCL, sCW, sLA, sLI, sTW }},
-/*ack*/ {{sCL, sES, sSS, sES, sFW, sTW, sCL, sCW, sCL, sLI, sES }},
+/*ack*/ {{sES, sES, sSS, sES, sFW, sTW, sCL, sCW, sCL, sLI, sES }},
 /*rst*/ {{sCL, sCL, sCL, sSR, sCL, sCL, sCL, sCL, sLA, sLI, sCL }},
 };
 
diff --git a/net/netfilter/ipvs/ip_vs_rr.c b/net/netfilter/ipvs/ip_vs_rr.c
index c35986c793d9..176b87c35e34 100644
--- a/net/netfilter/ipvs/ip_vs_rr.c
+++ b/net/netfilter/ipvs/ip_vs_rr.c
@@ -55,7 +55,8 @@ static int ip_vs_rr_del_dest(struct ip_vs_service *svc, struct ip_vs_dest *dest)
  * Round-Robin Scheduling
  */
 static struct ip_vs_dest *
-ip_vs_rr_schedule(struct ip_vs_service *svc, const struct sk_buff *skb)
+ip_vs_rr_schedule(struct ip_vs_service *svc, const struct sk_buff *skb,
+                  struct ip_vs_iphdr *iph)
 {
         struct list_head *p;
         struct ip_vs_dest *dest, *last;
diff --git a/net/netfilter/ipvs/ip_vs_sed.c b/net/netfilter/ipvs/ip_vs_sed.c
index f3205925359a..a5284cc3d882 100644
--- a/net/netfilter/ipvs/ip_vs_sed.c
+++ b/net/netfilter/ipvs/ip_vs_sed.c
@@ -59,7 +59,8 @@ ip_vs_sed_dest_overhead(struct ip_vs_dest *dest)
  *      Weighted Least Connection scheduling
  */
 static struct ip_vs_dest *
-ip_vs_sed_schedule(struct ip_vs_service *svc, const struct sk_buff *skb)
+ip_vs_sed_schedule(struct ip_vs_service *svc, const struct sk_buff *skb,
+                   struct ip_vs_iphdr *iph)
 {
         struct ip_vs_dest *dest, *least;
         unsigned int loh, doh;
diff --git a/net/netfilter/ipvs/ip_vs_sh.c b/net/netfilter/ipvs/ip_vs_sh.c
index a65edfe4b16c..f16c027df15b 100644
--- a/net/netfilter/ipvs/ip_vs_sh.c
+++ b/net/netfilter/ipvs/ip_vs_sh.c
@@ -48,6 +48,10 @@
 
 #include <net/ip_vs.h>
 
+#include <net/tcp.h>
+#include <linux/udp.h>
+#include <linux/sctp.h>
+
 
 /*
  *      IPVS SH bucket
@@ -71,10 +75,19 @@ struct ip_vs_sh_state {
         struct ip_vs_sh_bucket          buckets[IP_VS_SH_TAB_SIZE];
 };
 
+/* Helper function to determine if server is unavailable */
+static inline bool is_unavailable(struct ip_vs_dest *dest)
+{
+        return atomic_read(&dest->weight) <= 0 ||
+               dest->flags & IP_VS_DEST_F_OVERLOAD;
+}
+
 /*
  *      Returns hash value for IPVS SH entry
  */
-static inline unsigned int ip_vs_sh_hashkey(int af, const union nf_inet_addr *addr)
+static inline unsigned int
+ip_vs_sh_hashkey(int af, const union nf_inet_addr *addr,
+                 __be16 port, unsigned int offset)
 {
         __be32 addr_fold = addr->ip;
 
@@ -83,7 +96,8 @@ static inline unsigned int ip_vs_sh_hashkey(int af, const union nf_inet_addr *ad
                 addr_fold = addr->ip6[0]^addr->ip6[1]^
                             addr->ip6[2]^addr->ip6[3];
 #endif
-        return (ntohl(addr_fold)*2654435761UL) & IP_VS_SH_TAB_MASK;
+        return (offset + (ntohs(port) + ntohl(addr_fold))*2654435761UL) &
+                IP_VS_SH_TAB_MASK;
 }
 
 
@@ -91,12 +105,42 @@ static inline unsigned int ip_vs_sh_hashkey(int af, const union nf_inet_addr *ad
  *      Get ip_vs_dest associated with supplied parameters.
  */
 static inline struct ip_vs_dest *
-ip_vs_sh_get(int af, struct ip_vs_sh_state *s, const union nf_inet_addr *addr)
+ip_vs_sh_get(struct ip_vs_service *svc, struct ip_vs_sh_state *s,
+             const union nf_inet_addr *addr, __be16 port)
 {
-        return rcu_dereference(s->buckets[ip_vs_sh_hashkey(af, addr)].dest);
+        unsigned int hash = ip_vs_sh_hashkey(svc->af, addr, port, 0);
+        struct ip_vs_dest *dest = rcu_dereference(s->buckets[hash].dest);
+
+        return (!dest || is_unavailable(dest)) ? NULL : dest;
 }
 
 
+/* As ip_vs_sh_get, but with fallback if selected server is unavailable */
+static inline struct ip_vs_dest *
+ip_vs_sh_get_fallback(struct ip_vs_service *svc, struct ip_vs_sh_state *s,
+                      const union nf_inet_addr *addr, __be16 port)
+{
+        unsigned int offset;
+        unsigned int hash;
+        struct ip_vs_dest *dest;
+
+        for (offset = 0; offset < IP_VS_SH_TAB_SIZE; offset++) {
+                hash = ip_vs_sh_hashkey(svc->af, addr, port, offset);
+                dest = rcu_dereference(s->buckets[hash].dest);
+                if (!dest)
+                        break;
+                if (is_unavailable(dest))
+                        IP_VS_DBG_BUF(6, "SH: selected unavailable server "
+                                      "%s:%d (offset %d)",
+                                      IP_VS_DBG_ADDR(svc->af, &dest->addr),
+                                      ntohs(dest->port), offset);
+                else
+                        return dest;
+        }
+
+        return NULL;
+}
+
 /*
  *      Assign all the hash buckets of the specified table with the service.
  */
@@ -213,13 +257,33 @@ static int ip_vs_sh_dest_changed(struct ip_vs_service *svc,
 }
 
 
-/*
- *      If the dest flags is set with IP_VS_DEST_F_OVERLOAD,
- *      consider that the server is overloaded here.
- */
-static inline int is_overloaded(struct ip_vs_dest *dest)
+/* Helper function to get port number */
+static inline __be16
+ip_vs_sh_get_port(const struct sk_buff *skb, struct ip_vs_iphdr *iph)
 {
-        return dest->flags & IP_VS_DEST_F_OVERLOAD;
+        __be16 port;
+        struct tcphdr _tcph, *th;
+        struct udphdr _udph, *uh;
+        sctp_sctphdr_t _sctph, *sh;
+
+        switch (iph->protocol) {
+        case IPPROTO_TCP:
+                th = skb_header_pointer(skb, iph->len, sizeof(_tcph), &_tcph);
+                port = th->source;
+                break;
+        case IPPROTO_UDP:
+                uh = skb_header_pointer(skb, iph->len, sizeof(_udph), &_udph);
+                port = uh->source;
+                break;
+        case IPPROTO_SCTP:
+                sh = skb_header_pointer(skb, iph->len, sizeof(_sctph), &_sctph);
+                port = sh->source;
+                break;
+        default:
+                port = 0;
+        }
+
+        return port;
 }
 
 
@@ -227,28 +291,32 @@ static inline int is_overloaded(struct ip_vs_dest *dest)
  *      Source Hashing scheduling
  */
 static struct ip_vs_dest *
-ip_vs_sh_schedule(struct ip_vs_service *svc, const struct sk_buff *skb)
+ip_vs_sh_schedule(struct ip_vs_service *svc, const struct sk_buff *skb,
+                  struct ip_vs_iphdr *iph)
 {
         struct ip_vs_dest *dest;
         struct ip_vs_sh_state *s;
-        struct ip_vs_iphdr iph;
-
-        ip_vs_fill_iph_addr_only(svc->af, skb, &iph);
+        __be16 port = 0;
 
         IP_VS_DBG(6, "ip_vs_sh_schedule(): Scheduling...\n");
 
+        if (svc->flags & IP_VS_SVC_F_SCHED_SH_PORT)
+                port = ip_vs_sh_get_port(skb, iph);
+
         s = (struct ip_vs_sh_state *) svc->sched_data;
-        dest = ip_vs_sh_get(svc->af, s, &iph.saddr);
-        if (!dest
-            || !(dest->flags & IP_VS_DEST_F_AVAILABLE)
-            || atomic_read(&dest->weight) <= 0
-            || is_overloaded(dest)) {
+
+        if (svc->flags & IP_VS_SVC_F_SCHED_SH_FALLBACK)
+                dest = ip_vs_sh_get_fallback(svc, s, &iph->saddr, port);
+        else
+                dest = ip_vs_sh_get(svc, s, &iph->saddr, port);
+
+        if (!dest) {
                 ip_vs_scheduler_err(svc, "no destination available");
                 return NULL;
         }
 
         IP_VS_DBG_BUF(6, "SH: source IP address %s --> server %s:%d\n",
-                      IP_VS_DBG_ADDR(svc->af, &iph.saddr),
+                      IP_VS_DBG_ADDR(svc->af, &iph->saddr),
                       IP_VS_DBG_ADDR(svc->af, &dest->addr),
                       ntohs(dest->port));
 
diff --git a/net/netfilter/ipvs/ip_vs_sync.c b/net/netfilter/ipvs/ip_vs_sync.c
index f6046d9af8d3..f4484719f3e6 100644
--- a/net/netfilter/ipvs/ip_vs_sync.c
+++ b/net/netfilter/ipvs/ip_vs_sync.c
@@ -425,6 +425,16 @@ ip_vs_sync_buff_create_v0(struct netns_ipvs *ipvs)
         return sb;
 }
 
+/* Check if connection is controlled by persistence */
+static inline bool in_persistence(struct ip_vs_conn *cp)
+{
+        for (cp = cp->control; cp; cp = cp->control) {
+                if (cp->flags & IP_VS_CONN_F_TEMPLATE)
+                        return true;
+        }
+        return false;
+}
+
 /* Check if conn should be synced.
  * pkts: conn packets, use sysctl_sync_threshold to avoid packet check
  * - (1) sync_refresh_period: reduce sync rate. Additionally, retry
@@ -447,6 +457,8 @@ static int ip_vs_sync_conn_needed(struct netns_ipvs *ipvs,
         /* Check if we sync in current state */
         if (unlikely(cp->flags & IP_VS_CONN_F_TEMPLATE))
                 force = 0;
+        else if (unlikely(sysctl_sync_persist_mode(ipvs) && in_persistence(cp)))
+                return 0;
         else if (likely(cp->protocol == IPPROTO_TCP)) {
                 if (!((1 << cp->state) &
                       ((1 << IP_VS_TCP_S_ESTABLISHED) |
@@ -461,9 +473,10 @@ static int ip_vs_sync_conn_needed(struct netns_ipvs *ipvs,
         } else if (unlikely(cp->protocol == IPPROTO_SCTP)) {
                 if (!((1 << cp->state) &
                       ((1 << IP_VS_SCTP_S_ESTABLISHED) |
-                       (1 << IP_VS_SCTP_S_CLOSED) |
-                       (1 << IP_VS_SCTP_S_SHUT_ACK_CLI) |
-                       (1 << IP_VS_SCTP_S_SHUT_ACK_SER))))
+                       (1 << IP_VS_SCTP_S_SHUTDOWN_SENT) |
+                       (1 << IP_VS_SCTP_S_SHUTDOWN_RECEIVED) |
+                       (1 << IP_VS_SCTP_S_SHUTDOWN_ACK_SENT) |
+                       (1 << IP_VS_SCTP_S_CLOSED))))
                         return 0;
                 force = cp->state != cp->old_state;
                 if (force && cp->state != IP_VS_SCTP_S_ESTABLISHED)
diff --git a/net/netfilter/ipvs/ip_vs_wlc.c b/net/netfilter/ipvs/ip_vs_wlc.c
index c60a81c4ce9a..6dc1fa128840 100644
--- a/net/netfilter/ipvs/ip_vs_wlc.c
+++ b/net/netfilter/ipvs/ip_vs_wlc.c
@@ -31,7 +31,8 @@
  *      Weighted Least Connection scheduling
  */
 static struct ip_vs_dest *
-ip_vs_wlc_schedule(struct ip_vs_service *svc, const struct sk_buff *skb)
+ip_vs_wlc_schedule(struct ip_vs_service *svc, const struct sk_buff *skb,
+                   struct ip_vs_iphdr *iph)
 {
         struct ip_vs_dest *dest, *least;
         unsigned int loh, doh;
diff --git a/net/netfilter/ipvs/ip_vs_wrr.c b/net/netfilter/ipvs/ip_vs_wrr.c
index 0e68555bceb9..0546cd572d6b 100644
--- a/net/netfilter/ipvs/ip_vs_wrr.c
+++ b/net/netfilter/ipvs/ip_vs_wrr.c
@@ -162,7 +162,8 @@ static int ip_vs_wrr_dest_changed(struct ip_vs_service *svc,
  *    Weighted Round-Robin Scheduling
  */
 static struct ip_vs_dest *
-ip_vs_wrr_schedule(struct ip_vs_service *svc, const struct sk_buff *skb)
+ip_vs_wrr_schedule(struct ip_vs_service *svc, const struct sk_buff *skb,
+                   struct ip_vs_iphdr *iph)
 {
         struct ip_vs_dest *dest, *last, *stop = NULL;
         struct ip_vs_wrr_mark *mark = svc->sched_data;
diff --git a/net/netfilter/nf_conntrack_ftp.c b/net/netfilter/nf_conntrack_ftp.c
index 6b217074237b..b8a0924064ef 100644
--- a/net/netfilter/nf_conntrack_ftp.c
+++ b/net/netfilter/nf_conntrack_ftp.c
@@ -55,10 +55,14 @@ unsigned int (*nf_nat_ftp_hook)(struct sk_buff *skb,
                                 struct nf_conntrack_expect *exp);
 EXPORT_SYMBOL_GPL(nf_nat_ftp_hook);
 
-static int try_rfc959(const char *, size_t, struct nf_conntrack_man *, char);
-static int try_eprt(const char *, size_t, struct nf_conntrack_man *, char);
+static int try_rfc959(const char *, size_t, struct nf_conntrack_man *,
+                      char, unsigned int *);
+static int try_rfc1123(const char *, size_t, struct nf_conntrack_man *,
+                       char, unsigned int *);
+static int try_eprt(const char *, size_t, struct nf_conntrack_man *,
+                    char, unsigned int *);
 static int try_epsv_response(const char *, size_t, struct nf_conntrack_man *,
-                             char);
+                             char, unsigned int *);
 
 static struct ftp_search {
         const char *pattern;
@@ -66,7 +70,7 @@ static struct ftp_search {
         char skip;
         char term;
         enum nf_ct_ftp_type ftptype;
-        int (*getnum)(const char *, size_t, struct nf_conntrack_man *, char);
+        int (*getnum)(const char *, size_t, struct nf_conntrack_man *, char, unsigned int *);
 } search[IP_CT_DIR_MAX][2] = {
         [IP_CT_DIR_ORIGINAL] = {
                 {
@@ -90,10 +94,8 @@ static struct ftp_search {
                 {
                         .pattern        = "227 ",
                         .plen           = sizeof("227 ") - 1,
-                        .skip           = '(',
-                        .term           = ')',
                         .ftptype        = NF_CT_FTP_PASV,
-                        .getnum         = try_rfc959,
+                        .getnum         = try_rfc1123,
                 },
                 {
                         .pattern        = "229 ",
@@ -132,8 +134,9 @@ static int try_number(const char *data, size_t dlen, u_int32_t array[],
                         i++;
                 else {
                         /* Unexpected character; true if it's the
-                           terminator and we're finished. */
-                        if (*data == term && i == array_size - 1)
+                           terminator (or we don't care about one)
+                           and we're finished. */
+                        if ((*data == term || !term) && i == array_size - 1)
                                 return len;
 
                         pr_debug("Char %u (got %u nums) `%u' unexpected\n",
@@ -148,7 +151,8 @@ static int try_number(const char *data, size_t dlen, u_int32_t array[],
 
 /* Returns 0, or length of numbers: 192,168,1,1,5,6 */
 static int try_rfc959(const char *data, size_t dlen,
-                      struct nf_conntrack_man *cmd, char term)
+                      struct nf_conntrack_man *cmd, char term,
+                      unsigned int *offset)
 {
         int length;
         u_int32_t array[6];
@@ -163,6 +167,33 @@ static int try_rfc959(const char *data, size_t dlen,
         return length;
 }
 
+/*
+ * From RFC 1123:
+ * The format of the 227 reply to a PASV command is not
+ * well standardized.  In particular, an FTP client cannot
+ * assume that the parentheses shown on page 40 of RFC-959
+ * will be present (and in fact, Figure 3 on page 43 omits
+ * them).  Therefore, a User-FTP program that interprets
+ * the PASV reply must scan the reply for the first digit
+ * of the host and port numbers.
+ */
+static int try_rfc1123(const char *data, size_t dlen,
+                       struct nf_conntrack_man *cmd, char term,
+                       unsigned int *offset)
+{
+        int i;
+        for (i = 0; i < dlen; i++)
+                if (isdigit(data[i]))
+                        break;
+
+        if (i == dlen)
+                return 0;
+
+        *offset += i;
+
+        return try_rfc959(data + i, dlen - i, cmd, 0, offset);
+}
+
 /* Grab port: number up to delimiter */
 static int get_port(const char *data, int start, size_t dlen, char delim,
                     __be16 *port)
@@ -191,7 +222,7 @@ static int get_port(const char *data, int start, size_t dlen, char delim,
 
 /* Returns 0, or length of numbers: |1|132.235.1.2|6275| or |2|3ffe::1|6275| */
 static int try_eprt(const char *data, size_t dlen, struct nf_conntrack_man *cmd,
-                    char term)
+                    char term, unsigned int *offset)
 {
         char delim;
         int length;
@@ -239,7 +270,8 @@ static int try_eprt(const char *data, size_t dlen, struct nf_conntrack_man *cmd,
 
 /* Returns 0, or length of numbers: |||6446| */
 static int try_epsv_response(const char *data, size_t dlen,
-                             struct nf_conntrack_man *cmd, char term)
+                             struct nf_conntrack_man *cmd, char term,
+                             unsigned int *offset)
 {
         char delim;
 
@@ -261,9 +293,10 @@ static int find_pattern(const char *data, size_t dlen,
                         unsigned int *numlen,
                         struct nf_conntrack_man *cmd,
                         int (*getnum)(const char *, size_t,
-                                      struct nf_conntrack_man *, char))
+                                      struct nf_conntrack_man *, char,
+                                      unsigned int *))
 {
-        size_t i;
+        size_t i = plen;
 
         pr_debug("find_pattern `%s': dlen = %Zu\n", pattern, dlen);
         if (dlen == 0)
@@ -293,16 +326,18 @@ static int find_pattern(const char *data, size_t dlen,
         pr_debug("Pattern matches!\n");
         /* Now we've found the constant string, try to skip
            to the 'skip' character */
-        for (i = plen; data[i] != skip; i++)
-                if (i == dlen - 1) return -1;
+        if (skip) {
+                for (i = plen; data[i] != skip; i++)
+                        if (i == dlen - 1) return -1;
 
-        /* Skip over the last character */
-        i++;
+                /* Skip over the last character */
+                i++;
+        }
 
         pr_debug("Skipped up to `%c'!\n", skip);
 
         *numoff = i;
-        *numlen = getnum(data + i, dlen - i, cmd, term);
+        *numlen = getnum(data + i, dlen - i, cmd, term, numoff);
         if (!*numlen)
                 return -1;
 
diff --git a/net/netfilter/nf_conntrack_netlink.c b/net/netfilter/nf_conntrack_netlink.c
index ecf065f94032..edc410e778f7 100644
--- a/net/netfilter/nf_conntrack_netlink.c
+++ b/net/netfilter/nf_conntrack_netlink.c
@@ -828,7 +828,9 @@ ctnetlink_parse_tuple_ip(struct nlattr *attr, struct nf_conntrack_tuple *tuple)
         struct nf_conntrack_l3proto *l3proto;
         int ret = 0;
 
-        nla_parse_nested(tb, CTA_IP_MAX, attr, NULL);
+        ret = nla_parse_nested(tb, CTA_IP_MAX, attr, NULL);
+        if (ret < 0)
+                return ret;
 
         rcu_read_lock();
         l3proto = __nf_ct_l3proto_find(tuple->src.l3num);
@@ -895,7 +897,9 @@ ctnetlink_parse_tuple(const struct nlattr * const cda[],
 
         memset(tuple, 0, sizeof(*tuple));
 
-        nla_parse_nested(tb, CTA_TUPLE_MAX, cda[type], tuple_nla_policy);
+        err = nla_parse_nested(tb, CTA_TUPLE_MAX, cda[type], tuple_nla_policy);
+        if (err < 0)
+                return err;
 
         if (!tb[CTA_TUPLE_IP])
                 return -EINVAL;
@@ -946,9 +950,12 @@ static inline int
 ctnetlink_parse_help(const struct nlattr *attr, char **helper_name,
                      struct nlattr **helpinfo)
 {
+        int err;
         struct nlattr *tb[CTA_HELP_MAX+1];
 
-        nla_parse_nested(tb, CTA_HELP_MAX, attr, help_nla_policy);
+        err = nla_parse_nested(tb, CTA_HELP_MAX, attr, help_nla_policy);
+        if (err < 0)
+                return err;
 
         if (!tb[CTA_HELP_NAME])
                 return -EINVAL;
@@ -1431,7 +1438,9 @@ ctnetlink_change_protoinfo(struct nf_conn *ct, const struct nlattr * const cda[]
         struct nf_conntrack_l4proto *l4proto;
         int err = 0;
 
-        nla_parse_nested(tb, CTA_PROTOINFO_MAX, attr, protoinfo_policy);
+        err = nla_parse_nested(tb, CTA_PROTOINFO_MAX, attr, protoinfo_policy);
+        if (err < 0)
+                return err;
 
         rcu_read_lock();
         l4proto = __nf_ct_l4proto_find(nf_ct_l3num(ct), nf_ct_protonum(ct));
@@ -1452,9 +1461,12 @@ static const struct nla_policy nat_seq_policy[CTA_NAT_SEQ_MAX+1] = {
 static inline int
 change_nat_seq_adj(struct nf_nat_seq *natseq, const struct nlattr * const attr)
 {
+        int err;
         struct nlattr *cda[CTA_NAT_SEQ_MAX+1];
 
-        nla_parse_nested(cda, CTA_NAT_SEQ_MAX, attr, nat_seq_policy);
+        err = nla_parse_nested(cda, CTA_NAT_SEQ_MAX, attr, nat_seq_policy);
+        if (err < 0)
+                return err;
 
         if (!cda[CTA_NAT_SEQ_CORRECTION_POS])
                 return -EINVAL;
@@ -2116,7 +2128,9 @@ ctnetlink_nfqueue_parse(const struct nlattr *attr, struct nf_conn *ct)
         struct nlattr *cda[CTA_MAX+1];
         int ret;
 
-        nla_parse_nested(cda, CTA_MAX, attr, ct_nla_policy);
+        ret = nla_parse_nested(cda, CTA_MAX, attr, ct_nla_policy);
+        if (ret < 0)
+                return ret;
 
         spin_lock_bh(&nf_conntrack_lock);
         ret = ctnetlink_nfqueue_parse_ct((const struct nlattr **)cda, ct);
@@ -2711,7 +2725,9 @@ ctnetlink_parse_expect_nat(const struct nlattr *attr,
         struct nf_conntrack_tuple nat_tuple = {};
         int err;
 
-        nla_parse_nested(tb, CTA_EXPECT_NAT_MAX, attr, exp_nat_nla_policy);
+        err = nla_parse_nested(tb, CTA_EXPECT_NAT_MAX, attr, exp_nat_nla_policy);
+        if (err < 0)
+                return err;
 
         if (!tb[CTA_EXPECT_NAT_DIR] || !tb[CTA_EXPECT_NAT_TUPLE])
                 return -EINVAL;
diff --git a/net/netfilter/nf_conntrack_proto_tcp.c b/net/netfilter/nf_conntrack_proto_tcp.c
index 4d4d8f1d01fc..7dcc376eea5f 100644
--- a/net/netfilter/nf_conntrack_proto_tcp.c
+++ b/net/netfilter/nf_conntrack_proto_tcp.c
@@ -1043,6 +1043,12 @@ static int tcp_packet(struct nf_conn *ct,
                         nf_ct_kill_acct(ct, ctinfo, skb);
                         return NF_ACCEPT;
                 }
+                /* ESTABLISHED without SEEN_REPLY, i.e. mid-connection
+                 * pickup with loose=1. Avoid large ESTABLISHED timeout.
+                 */
+                if (new_state == TCP_CONNTRACK_ESTABLISHED &&
+                    timeout > timeouts[TCP_CONNTRACK_UNACK])
+                        timeout = timeouts[TCP_CONNTRACK_UNACK];
         } else if (!test_bit(IPS_ASSURED_BIT, &ct->status)
                    && (old_state == TCP_CONNTRACK_SYN_RECV
                        || old_state == TCP_CONNTRACK_ESTABLISHED)
diff --git a/net/netfilter/nf_conntrack_standalone.c b/net/netfilter/nf_conntrack_standalone.c
index bd700b4013c1..f641751dba9d 100644
--- a/net/netfilter/nf_conntrack_standalone.c
+++ b/net/netfilter/nf_conntrack_standalone.c
@@ -408,7 +408,7 @@ static int log_invalid_proto_max = 255;
 
 static struct ctl_table_header *nf_ct_netfilter_header;
 
-static ctl_table nf_ct_sysctl_table[] = {
+static struct ctl_table nf_ct_sysctl_table[] = {
         {
                 .procname       = "nf_conntrack_max",
                 .data           = &nf_conntrack_max,
@@ -458,7 +458,7 @@ static ctl_table nf_ct_sysctl_table[] = {
 
 #define NET_NF_CONNTRACK_MAX 2089
 
-static ctl_table nf_ct_netfilter_table[] = {
+static struct ctl_table nf_ct_netfilter_table[] = {
         {
                 .procname       = "nf_conntrack_max",
                 .data           = &nf_conntrack_max,
diff --git a/net/netfilter/nf_log.c b/net/netfilter/nf_log.c
index 3b18dd1be7d9..85296d4eac0e 100644
--- a/net/netfilter/nf_log.c
+++ b/net/netfilter/nf_log.c
@@ -245,7 +245,7 @@ static const struct file_operations nflog_file_ops = {
 static char nf_log_sysctl_fnames[NFPROTO_NUMPROTO-NFPROTO_UNSPEC][3];
 static struct ctl_table nf_log_sysctl_table[NFPROTO_NUMPROTO+1];
 
-static int nf_log_proc_dostring(ctl_table *table, int write,
+static int nf_log_proc_dostring(struct ctl_table *table, int write,
                          void __user *buffer, size_t *lenp, loff_t *ppos)
 {
         const struct nf_logger *logger;
@@ -369,9 +369,7 @@ static int __net_init nf_log_net_init(struct net *net)
 
 out_sysctl:
 #ifdef CONFIG_PROC_FS
-        /* For init_net: errors will trigger panic, don't unroll on error. */
-        if (!net_eq(net, &init_net))
-                remove_proc_entry("nf_log", net->nf.proc_netfilter);
+        remove_proc_entry("nf_log", net->nf.proc_netfilter);
 #endif
         return ret;
 }
diff --git a/net/netfilter/nf_nat_helper.c b/net/netfilter/nf_nat_helper.c
index 5fea563afe30..85e20a919081 100644
--- a/net/netfilter/nf_nat_helper.c
+++ b/net/netfilter/nf_nat_helper.c
@@ -104,7 +104,7 @@ static void mangle_contents(struct sk_buff *skb,
         /* move post-replacement */
         memmove(data + match_offset + rep_len,
                 data + match_offset + match_len,
-                skb->tail - (skb->network_header + dataoff +
+                skb_tail_pointer(skb) - (skb_network_header(skb) + dataoff +
                              match_offset + match_len));
 
         /* insert data from buffer */
diff --git a/net/netfilter/nfnetlink_cthelper.c b/net/netfilter/nfnetlink_cthelper.c
index a191b6db657e..9e287cb56a04 100644
--- a/net/netfilter/nfnetlink_cthelper.c
+++ b/net/netfilter/nfnetlink_cthelper.c
@@ -67,9 +67,12 @@ static int
 nfnl_cthelper_parse_tuple(struct nf_conntrack_tuple *tuple,
                           const struct nlattr *attr)
 {
+        int err;
         struct nlattr *tb[NFCTH_TUPLE_MAX+1];
 
-        nla_parse_nested(tb, NFCTH_TUPLE_MAX, attr, nfnl_cthelper_tuple_pol);
+        err = nla_parse_nested(tb, NFCTH_TUPLE_MAX, attr, nfnl_cthelper_tuple_pol);
+        if (err < 0)
+                return err;
 
         if (!tb[NFCTH_TUPLE_L3PROTONUM] || !tb[NFCTH_TUPLE_L4PROTONUM])
                 return -EINVAL;
@@ -121,9 +124,12 @@ static int
 nfnl_cthelper_expect_policy(struct nf_conntrack_expect_policy *expect_policy,
                             const struct nlattr *attr)
 {
+        int err;
         struct nlattr *tb[NFCTH_POLICY_MAX+1];
 
-        nla_parse_nested(tb, NFCTH_POLICY_MAX, attr, nfnl_cthelper_expect_pol);
+        err = nla_parse_nested(tb, NFCTH_POLICY_MAX, attr, nfnl_cthelper_expect_pol);
+        if (err < 0)
+                return err;
 
         if (!tb[NFCTH_POLICY_NAME] ||
             !tb[NFCTH_POLICY_EXPECT_MAX] ||
@@ -153,8 +159,10 @@ nfnl_cthelper_parse_expect_policy(struct nf_conntrack_helper *helper,
         struct nf_conntrack_expect_policy *expect_policy;
         struct nlattr *tb[NFCTH_POLICY_SET_MAX+1];
 
-        nla_parse_nested(tb, NFCTH_POLICY_SET_MAX, attr,
-                                        nfnl_cthelper_expect_policy_set);
+        ret = nla_parse_nested(tb, NFCTH_POLICY_SET_MAX, attr,
+                               nfnl_cthelper_expect_policy_set);
+        if (ret < 0)
+                return ret;
 
         if (!tb[NFCTH_POLICY_SET_NUM])
                 return -EINVAL;
diff --git a/net/netfilter/nfnetlink_cttimeout.c b/net/netfilter/nfnetlink_cttimeout.c
index 65074dfb9383..50580494148d 100644
--- a/net/netfilter/nfnetlink_cttimeout.c
+++ b/net/netfilter/nfnetlink_cttimeout.c
@@ -59,8 +59,10 @@ ctnl_timeout_parse_policy(struct ctnl_timeout *timeout,
         if (likely(l4proto->ctnl_timeout.nlattr_to_obj)) {
                 struct nlattr *tb[l4proto->ctnl_timeout.nlattr_max+1];
 
-                nla_parse_nested(tb, l4proto->ctnl_timeout.nlattr_max,
-                                 attr, l4proto->ctnl_timeout.nla_policy);
+                ret = nla_parse_nested(tb, l4proto->ctnl_timeout.nlattr_max,
+                                       attr, l4proto->ctnl_timeout.nla_policy);
+                if (ret < 0)
+                        return ret;
 
                 ret = l4proto->ctnl_timeout.nlattr_to_obj(tb, net,
                                                           &timeout->data);
diff --git a/net/netfilter/nfnetlink_queue_core.c b/net/netfilter/nfnetlink_queue_core.c
index 5352b2d2d5bf..971ea145ab3e 100644
--- a/net/netfilter/nfnetlink_queue_core.c
+++ b/net/netfilter/nfnetlink_queue_core.c
@@ -41,6 +41,14 @@
 
 #define NFQNL_QMAX_DEFAULT 1024
 
+/* We're using struct nlattr which has 16bit nla_len. Note that nla_len
+ * includes the header length. Thus, the maximum packet length that we
+ * support is 65531 bytes. We send truncated packets if the specified length
+ * is larger than that.  Userspace can check for presence of NFQA_CAP_LEN
+ * attribute to detect truncation.
+ */
+#define NFQNL_MAX_COPY_RANGE (0xffff - NLA_HDRLEN)
+
 struct nfqnl_instance {
         struct hlist_node hlist;                /* global list of queues */
         struct rcu_head rcu;
@@ -122,7 +130,7 @@ instance_create(struct nfnl_queue_net *q, u_int16_t queue_num,
         inst->queue_num = queue_num;
         inst->peer_portid = portid;
         inst->queue_maxlen = NFQNL_QMAX_DEFAULT;
-        inst->copy_range = 0xffff;
+        inst->copy_range = NFQNL_MAX_COPY_RANGE;
         inst->copy_mode = NFQNL_COPY_NONE;
         spin_lock_init(&inst->lock);
         INIT_LIST_HEAD(&inst->queue_list);
@@ -272,12 +280,17 @@ nfqnl_zcopy(struct sk_buff *to, const struct sk_buff *from, int len, int hlen)
         skb_shinfo(to)->nr_frags = j;
 }
 
-static int nfqnl_put_packet_info(struct sk_buff *nlskb, struct sk_buff *packet)
+static int
+nfqnl_put_packet_info(struct sk_buff *nlskb, struct sk_buff *packet,
+                      bool csum_verify)
 {
         __u32 flags = 0;
 
         if (packet->ip_summed == CHECKSUM_PARTIAL)
                 flags = NFQA_SKB_CSUMNOTREADY;
+        else if (csum_verify)
+                flags = NFQA_SKB_CSUM_NOTVERIFIED;
+
         if (skb_is_gso(packet))
                 flags |= NFQA_SKB_GSO;
 
@@ -302,6 +315,7 @@ nfqnl_build_packet_message(struct nfqnl_instance *queue,
         struct net_device *outdev;
         struct nf_conn *ct = NULL;
         enum ip_conntrack_info uninitialized_var(ctinfo);
+        bool csum_verify;
 
         size =    nlmsg_total_size(sizeof(struct nfgenmsg))
                 + nla_total_size(sizeof(struct nfqnl_msg_packet_hdr))
@@ -319,6 +333,12 @@ nfqnl_build_packet_message(struct nfqnl_instance *queue,
         if (entskb->tstamp.tv64)
                 size += nla_total_size(sizeof(struct nfqnl_msg_packet_timestamp));
 
+        if (entry->hook <= NF_INET_FORWARD ||
+           (entry->hook == NF_INET_POST_ROUTING && entskb->sk == NULL))
+                csum_verify = !skb_csum_unnecessary(entskb);
+        else
+                csum_verify = false;
+
         outdev = entry->outdev;
 
         switch ((enum nfqnl_config_mode)ACCESS_ONCE(queue->copy_mode)) {
@@ -333,10 +353,9 @@ nfqnl_build_packet_message(struct nfqnl_instance *queue,
                         return NULL;
 
                 data_len = ACCESS_ONCE(queue->copy_range);
-                if (data_len == 0 || data_len > entskb->len)
+                if (data_len > entskb->len)
                         data_len = entskb->len;
 
-
                 if (!entskb->head_frag ||
                     skb_headlen(entskb) < L1_CACHE_BYTES ||
                     skb_shinfo(entskb)->nr_frags >= MAX_SKB_FRAGS)
@@ -465,10 +484,11 @@ nfqnl_build_packet_message(struct nfqnl_instance *queue,
         if (ct && nfqnl_ct_put(skb, ct, ctinfo) < 0)
                 goto nla_put_failure;
 
-        if (cap_len > 0 && nla_put_be32(skb, NFQA_CAP_LEN, htonl(cap_len)))
+        if (cap_len > data_len &&
+            nla_put_be32(skb, NFQA_CAP_LEN, htonl(cap_len)))
                 goto nla_put_failure;
 
-        if (nfqnl_put_packet_info(skb, entskb))
+        if (nfqnl_put_packet_info(skb, entskb, csum_verify))
                 goto nla_put_failure;
 
         if (data_len) {
@@ -509,10 +529,6 @@ __nfqnl_enqueue_packet(struct net *net, struct nfqnl_instance *queue,
         }
         spin_lock_bh(&queue->lock);
 
-        if (!queue->peer_portid) {
-                err = -EINVAL;
-                goto err_out_free_nskb;
-        }
         if (queue->queue_total >= queue->queue_maxlen) {
                 if (queue->flags & NFQA_CFG_F_FAIL_OPEN) {
                         failopen = 1;
@@ -731,13 +747,8 @@ nfqnl_set_mode(struct nfqnl_instance *queue,
 
         case NFQNL_COPY_PACKET:
                 queue->copy_mode = mode;
-                /* We're using struct nlattr which has 16bit nla_len. Note that
-                 * nla_len includes the header length. Thus, the maximum packet
-                 * length that we support is 65531 bytes. We send truncated
-                 * packets if the specified length is larger than that.
-                 */
-                if (range > 0xffff - NLA_HDRLEN)
-                        queue->copy_range = 0xffff - NLA_HDRLEN;
+                if (range == 0 || range > NFQNL_MAX_COPY_RANGE)
+                        queue->copy_range = NFQNL_MAX_COPY_RANGE;
                 else
                         queue->copy_range = range;
                 break;
@@ -800,7 +811,7 @@ static int
 nfqnl_rcv_dev_event(struct notifier_block *this,
                     unsigned long event, void *ptr)
 {
-        struct net_device *dev = ptr;
+        struct net_device *dev = netdev_notifier_info_to_dev(ptr);
 
         /* Drop any packets associated with the downed device */
         if (event == NETDEV_DOWN)
diff --git a/net/netfilter/xt_CT.c b/net/netfilter/xt_CT.c
index a60261cb0e80..da35ac06a975 100644
--- a/net/netfilter/xt_CT.c
+++ b/net/netfilter/xt_CT.c
@@ -26,6 +26,9 @@ static inline int xt_ct_target(struct sk_buff *skb, struct nf_conn *ct)
         if (skb->nfct != NULL)
                 return XT_CONTINUE;
 
+        /* special case the untracked ct : we want the percpu object */
+        if (!ct)
+                ct = nf_ct_untracked_get();
         atomic_inc(&ct->ct_general.use);
         skb->nfct = &ct->ct_general;
         skb->nfctinfo = IP_CT_NEW;
@@ -186,8 +189,7 @@ static int xt_ct_tg_check(const struct xt_tgchk_param *par,
         int ret = -EOPNOTSUPP;
 
         if (info->flags & XT_CT_NOTRACK) {
-                ct = nf_ct_untracked_get();
-                atomic_inc(&ct->ct_general.use);
+                ct = NULL;
                 goto out;
         }
 
@@ -311,7 +313,7 @@ static void xt_ct_tg_destroy(const struct xt_tgdtor_param *par,
         struct nf_conn *ct = info->ct;
         struct nf_conn_help *help;
 
-        if (!nf_ct_is_untracked(ct)) {
+        if (ct && !nf_ct_is_untracked(ct)) {
                 help = nfct_help(ct);
                 if (help)
                         module_put(help->helper->me);
@@ -319,8 +321,8 @@ static void xt_ct_tg_destroy(const struct xt_tgdtor_param *par,
                 nf_ct_l3proto_module_put(par->family);
 
                 xt_ct_destroy_timeout(ct);
+                nf_ct_put(info->ct);
         }
-        nf_ct_put(info->ct);
 }
 
 static void xt_ct_tg_destroy_v0(const struct xt_tgdtor_param *par)
diff --git a/net/netfilter/xt_TEE.c b/net/netfilter/xt_TEE.c
index bd93e51d30ac..292934d23482 100644
--- a/net/netfilter/xt_TEE.c
+++ b/net/netfilter/xt_TEE.c
@@ -200,7 +200,7 @@ tee_tg6(struct sk_buff *skb, const struct xt_action_param *par)
 static int tee_netdev_event(struct notifier_block *this, unsigned long event,
                             void *ptr)
 {
-        struct net_device *dev = ptr;
+        struct net_device *dev = netdev_notifier_info_to_dev(ptr);
         struct xt_tee_priv *priv;
 
         priv = container_of(this, struct xt_tee_priv, notifier);
diff --git a/net/netfilter/xt_rateest.c b/net/netfilter/xt_rateest.c
index ed0db15ab00e..7720b036d76a 100644
--- a/net/netfilter/xt_rateest.c
+++ b/net/netfilter/xt_rateest.c
@@ -18,7 +18,7 @@ static bool
 xt_rateest_mt(const struct sk_buff *skb, struct xt_action_param *par)
 {
         const struct xt_rateest_match_info *info = par->matchinfo;
-        struct gnet_stats_rate_est *r;
+        struct gnet_stats_rate_est64 *r;
         u_int32_t bps1, bps2, pps1, pps2;
         bool ret = true;
 
diff --git a/net/netfilter/xt_socket.c b/net/netfilter/xt_socket.c
index 63b2bdb59e95..f8b71911037a 100644
--- a/net/netfilter/xt_socket.c
+++ b/net/netfilter/xt_socket.c
@@ -107,7 +107,7 @@ socket_match(const struct sk_buff *skb, struct xt_action_param *par,
 {
         const struct iphdr *iph = ip_hdr(skb);
         struct udphdr _hdr, *hp = NULL;
-        struct sock *sk;
+        struct sock *sk = skb->sk;
         __be32 uninitialized_var(daddr), uninitialized_var(saddr);
         __be16 uninitialized_var(dport), uninitialized_var(sport);
         u8 uninitialized_var(protocol);
@@ -155,14 +155,19 @@ socket_match(const struct sk_buff *skb, struct xt_action_param *par,
         }
 #endif
 
-        sk = nf_tproxy_get_sock_v4(dev_net(skb->dev), protocol,
-                                   saddr, daddr, sport, dport, par->in, NFT_LOOKUP_ANY);
-        if (sk != NULL) {
+        if (!sk)
+                sk = nf_tproxy_get_sock_v4(dev_net(skb->dev), protocol,
+                                           saddr, daddr, sport, dport,
+                                           par->in, NFT_LOOKUP_ANY);
+        if (sk) {
                 bool wildcard;
                 bool transparent = true;
 
-                /* Ignore sockets listening on INADDR_ANY */
-                wildcard = (sk->sk_state != TCP_TIME_WAIT &&
+                /* Ignore sockets listening on INADDR_ANY,
+                 * unless XT_SOCKET_NOWILDCARD is set
+                 */
+                wildcard = (!(info->flags & XT_SOCKET_NOWILDCARD) &&
+                            sk->sk_state != TCP_TIME_WAIT &&
                             inet_sk(sk)->inet_rcv_saddr == 0);
 
                 /* Ignore non-transparent sockets,
@@ -173,7 +178,8 @@ socket_match(const struct sk_buff *skb, struct xt_action_param *par,
                                        (sk->sk_state == TCP_TIME_WAIT &&
                                         inet_twsk(sk)->tw_transparent));
 
-                xt_socket_put_sk(sk);
+                if (sk != skb->sk)
+                        xt_socket_put_sk(sk);
 
                 if (wildcard || !transparent)
                         sk = NULL;
@@ -194,7 +200,7 @@ socket_mt4_v0(const struct sk_buff *skb, struct xt_action_param *par)
 }
 
 static bool
-socket_mt4_v1(const struct sk_buff *skb, struct xt_action_param *par)
+socket_mt4_v1_v2(const struct sk_buff *skb, struct xt_action_param *par)
 {
         return socket_match(skb, par, par->matchinfo);
 }
@@ -256,11 +262,11 @@ extract_icmp6_fields(const struct sk_buff *skb,
 }
 
 static bool
-socket_mt6_v1(const struct sk_buff *skb, struct xt_action_param *par)
+socket_mt6_v1_v2(const struct sk_buff *skb, struct xt_action_param *par)
 {
         struct ipv6hdr *iph = ipv6_hdr(skb);
         struct udphdr _hdr, *hp = NULL;
-        struct sock *sk;
+        struct sock *sk = skb->sk;
         struct in6_addr *daddr = NULL, *saddr = NULL;
         __be16 uninitialized_var(dport), uninitialized_var(sport);
         int thoff = 0, uninitialized_var(tproto);
@@ -291,14 +297,19 @@ socket_mt6_v1(const struct sk_buff *skb, struct xt_action_param *par)
                 return false;
         }
 
-        sk = nf_tproxy_get_sock_v6(dev_net(skb->dev), tproto,
-                                   saddr, daddr, sport, dport, par->in, NFT_LOOKUP_ANY);
-        if (sk != NULL) {
+        if (!sk)
+                sk = nf_tproxy_get_sock_v6(dev_net(skb->dev), tproto,
+                                           saddr, daddr, sport, dport,
+                                           par->in, NFT_LOOKUP_ANY);
+        if (sk) {
                 bool wildcard;
                 bool transparent = true;
 
-                /* Ignore sockets listening on INADDR_ANY */
-                wildcard = (sk->sk_state != TCP_TIME_WAIT &&
+                /* Ignore sockets listening on INADDR_ANY
+                 * unless XT_SOCKET_NOWILDCARD is set
+                 */
+                wildcard = (!(info->flags & XT_SOCKET_NOWILDCARD) &&
+                            sk->sk_state != TCP_TIME_WAIT &&
                             ipv6_addr_any(&inet6_sk(sk)->rcv_saddr));
 
                 /* Ignore non-transparent sockets,
@@ -309,7 +320,8 @@ socket_mt6_v1(const struct sk_buff *skb, struct xt_action_param *par)
                                        (sk->sk_state == TCP_TIME_WAIT &&
                                         inet_twsk(sk)->tw_transparent));
 
-                xt_socket_put_sk(sk);
+                if (sk != skb->sk)
+                        xt_socket_put_sk(sk);
 
                 if (wildcard || !transparent)
                         sk = NULL;
@@ -325,6 +337,28 @@ socket_mt6_v1(const struct sk_buff *skb, struct xt_action_param *par)
 }
 #endif
 
+static int socket_mt_v1_check(const struct xt_mtchk_param *par)
+{
+        const struct xt_socket_mtinfo1 *info = (struct xt_socket_mtinfo1 *) par->matchinfo;
+
+        if (info->flags & ~XT_SOCKET_FLAGS_V1) {
+                pr_info("unknown flags 0x%x\n", info->flags & ~XT_SOCKET_FLAGS_V1);
+                return -EINVAL;
+        }
+        return 0;
+}
+
+static int socket_mt_v2_check(const struct xt_mtchk_param *par)
+{
+        const struct xt_socket_mtinfo2 *info = (struct xt_socket_mtinfo2 *) par->matchinfo;
+
+        if (info->flags & ~XT_SOCKET_FLAGS_V2) {
+                pr_info("unknown flags 0x%x\n", info->flags & ~XT_SOCKET_FLAGS_V2);
+                return -EINVAL;
+        }
+        return 0;
+}
+
 static struct xt_match socket_mt_reg[] __read_mostly = {
         {
                 .name           = "socket",
@@ -339,7 +373,8 @@ static struct xt_match socket_mt_reg[] __read_mostly = {
                 .name           = "socket",
                 .revision       = 1,
                 .family         = NFPROTO_IPV4,
-                .match          = socket_mt4_v1,
+                .match          = socket_mt4_v1_v2,
+                .checkentry     = socket_mt_v1_check,
                 .matchsize      = sizeof(struct xt_socket_mtinfo1),
                 .hooks          = (1 << NF_INET_PRE_ROUTING) |
                                   (1 << NF_INET_LOCAL_IN),
@@ -350,7 +385,32 @@ static struct xt_match socket_mt_reg[] __read_mostly = {
                 .name           = "socket",
                 .revision       = 1,
                 .family         = NFPROTO_IPV6,
-                .match          = socket_mt6_v1,
+                .match          = socket_mt6_v1_v2,
+                .checkentry     = socket_mt_v1_check,
+                .matchsize      = sizeof(struct xt_socket_mtinfo1),
+                .hooks          = (1 << NF_INET_PRE_ROUTING) |
+                                  (1 << NF_INET_LOCAL_IN),
+                .me             = THIS_MODULE,
+        },
+#endif
+        {
+                .name           = "socket",
+                .revision       = 2,
+                .family         = NFPROTO_IPV4,
+                .match          = socket_mt4_v1_v2,
+                .checkentry     = socket_mt_v2_check,
+                .matchsize      = sizeof(struct xt_socket_mtinfo1),
+                .hooks          = (1 << NF_INET_PRE_ROUTING) |
+                                  (1 << NF_INET_LOCAL_IN),
+                .me             = THIS_MODULE,
+        },
+#ifdef XT_SOCKET_HAVE_IPV6
+        {
+                .name           = "socket",
+                .revision       = 2,
+                .family         = NFPROTO_IPV6,
+                .match          = socket_mt6_v1_v2,
+                .checkentry     = socket_mt_v2_check,
                 .matchsize      = sizeof(struct xt_socket_mtinfo1),
                 .hooks          = (1 << NF_INET_PRE_ROUTING) |
                                   (1 << NF_INET_LOCAL_IN),
diff --git a/net/netlabel/netlabel_unlabeled.c b/net/netlabel/netlabel_unlabeled.c
index 8a6c6ea466d8..af3531926ee0 100644
--- a/net/netlabel/netlabel_unlabeled.c
+++ b/net/netlabel/netlabel_unlabeled.c
@@ -708,7 +708,7 @@ unlhsh_remove_return:
  * netlbl_unlhsh_netdev_handler - Network device notification handler
  * @this: notifier block
  * @event: the event
- * @ptr: the network device (cast to void)
+ * @ptr: the netdevice notifier info (cast to void)
  *
  * Description:
  * Handle network device events, although at present all we care about is a
@@ -717,10 +717,9 @@ unlhsh_remove_return:
  *
  */
 static int netlbl_unlhsh_netdev_handler(struct notifier_block *this,
-                                        unsigned long event,
-                                        void *ptr)
+                                        unsigned long event, void *ptr)
 {
-        struct net_device *dev = ptr;
+        struct net_device *dev = netdev_notifier_info_to_dev(ptr);
         struct netlbl_unlhsh_iface *iface = NULL;
 
         if (!net_eq(dev_net(dev), &init_net))
diff --git a/net/netlink/af_netlink.c b/net/netlink/af_netlink.c
index 57ee84d21470..0c61b59175dc 100644
--- a/net/netlink/af_netlink.c
+++ b/net/netlink/af_netlink.c
@@ -57,6 +57,7 @@
 #include <linux/audit.h>
 #include <linux/mutex.h>
 #include <linux/vmalloc.h>
+#include <linux/if_arp.h>
 #include <asm/cacheflush.h>
 
 #include <net/net_namespace.h>
@@ -101,6 +102,9 @@ static atomic_t nl_table_users = ATOMIC_INIT(0);
 
 static ATOMIC_NOTIFIER_HEAD(netlink_chain);
 
+static DEFINE_SPINLOCK(netlink_tap_lock);
+static struct list_head netlink_tap_all __read_mostly;
+
 static inline u32 netlink_group_mask(u32 group)
 {
         return group ? 1 << (group - 1) : 0;
@@ -111,6 +115,100 @@ static inline struct hlist_head *nl_portid_hashfn(struct nl_portid_hash *hash, u
         return &hash->table[jhash_1word(portid, hash->rnd) & hash->mask];
 }
 
+int netlink_add_tap(struct netlink_tap *nt)
+{
+        if (unlikely(nt->dev->type != ARPHRD_NETLINK))
+                return -EINVAL;
+
+        spin_lock(&netlink_tap_lock);
+        list_add_rcu(&nt->list, &netlink_tap_all);
+        spin_unlock(&netlink_tap_lock);
+
+        if (nt->module)
+                __module_get(nt->module);
+
+        return 0;
+}
+EXPORT_SYMBOL_GPL(netlink_add_tap);
+
+int __netlink_remove_tap(struct netlink_tap *nt)
+{
+        bool found = false;
+        struct netlink_tap *tmp;
+
+        spin_lock(&netlink_tap_lock);
+
+        list_for_each_entry(tmp, &netlink_tap_all, list) {
+                if (nt == tmp) {
+                        list_del_rcu(&nt->list);
+                        found = true;
+                        goto out;
+                }
+        }
+
+        pr_warn("__netlink_remove_tap: %p not found\n", nt);
+out:
+        spin_unlock(&netlink_tap_lock);
+
+        if (found && nt->module)
+                module_put(nt->module);
+
+        return found ? 0 : -ENODEV;
+}
+EXPORT_SYMBOL_GPL(__netlink_remove_tap);
+
+int netlink_remove_tap(struct netlink_tap *nt)
+{
+        int ret;
+
+        ret = __netlink_remove_tap(nt);
+        synchronize_net();
+
+        return ret;
+}
+EXPORT_SYMBOL_GPL(netlink_remove_tap);
+
+static int __netlink_deliver_tap_skb(struct sk_buff *skb,
+                                     struct net_device *dev)
+{
+        struct sk_buff *nskb;
+        int ret = -ENOMEM;
+
+        dev_hold(dev);
+        nskb = skb_clone(skb, GFP_ATOMIC);
+        if (nskb) {
+                nskb->dev = dev;
+                ret = dev_queue_xmit(nskb);
+                if (unlikely(ret > 0))
+                        ret = net_xmit_errno(ret);
+        }
+
+        dev_put(dev);
+        return ret;
+}
+
+static void __netlink_deliver_tap(struct sk_buff *skb)
+{
+        int ret;
+        struct netlink_tap *tmp;
+
+        list_for_each_entry_rcu(tmp, &netlink_tap_all, list) {
+                ret = __netlink_deliver_tap_skb(skb, tmp->dev);
+                if (unlikely(ret))
+                        break;
+        }
+}
+
+static void netlink_deliver_tap(struct sk_buff *skb)
+{
+        rcu_read_lock();
+
+        if (unlikely(!list_empty(&netlink_tap_all)))
+                __netlink_deliver_tap(skb);
+
+        rcu_read_unlock();
+}
+
 static void netlink_overrun(struct sock *sk)
 {
         struct netlink_sock *nlk = nlk_sk(sk);
@@ -750,6 +848,13 @@ static void netlink_skb_destructor(struct sk_buff *skb)
                 skb->head = NULL;
         }
 #endif
+        if (is_vmalloc_addr(skb->head)) {
+                if (!skb->cloned ||
+                    !atomic_dec_return(&(skb_shinfo(skb)->dataref)))
+                        vfree(skb->head);
+
+                skb->head = NULL;
+        }
         if (skb->sk != NULL)
                 sock_rfree(skb);
 }
@@ -854,16 +959,23 @@ netlink_unlock_table(void)
                 wake_up(&nl_table_wait);
 }
 
+static bool netlink_compare(struct net *net, struct sock *sk)
+{
+        return net_eq(sock_net(sk), net);
+}
+
 static struct sock *netlink_lookup(struct net *net, int protocol, u32 portid)
 {
-        struct nl_portid_hash *hash = &nl_table[protocol].hash;
+        struct netlink_table *table = &nl_table[protocol];
+        struct nl_portid_hash *hash = &table->hash;
         struct hlist_head *head;
         struct sock *sk;
 
         read_lock(&nl_table_lock);
         head = nl_portid_hashfn(hash, portid);
         sk_for_each(sk, head) {
-                if (net_eq(sock_net(sk), net) && (nlk_sk(sk)->portid == portid)) {
+                if (table->compare(net, sk) &&
+                    (nlk_sk(sk)->portid == portid)) {
                         sock_hold(sk);
                         goto found;
                 }
@@ -976,7 +1088,8 @@ netlink_update_listeners(struct sock *sk)
 
 static int netlink_insert(struct sock *sk, struct net *net, u32 portid)
 {
-        struct nl_portid_hash *hash = &nl_table[sk->sk_protocol].hash;
+        struct netlink_table *table = &nl_table[sk->sk_protocol];
+        struct nl_portid_hash *hash = &table->hash;
         struct hlist_head *head;
         int err = -EADDRINUSE;
         struct sock *osk;
@@ -986,7 +1099,8 @@ static int netlink_insert(struct sock *sk, struct net *net, u32 portid)
         head = nl_portid_hashfn(hash, portid);
         len = 0;
         sk_for_each(osk, head) {
-                if (net_eq(sock_net(osk), net) && (nlk_sk(osk)->portid == portid))
+                if (table->compare(net, osk) &&
+                    (nlk_sk(osk)->portid == portid))
                         break;
                 len++;
         }
@@ -1183,7 +1297,8 @@ static int netlink_autobind(struct socket *sock)
 {
         struct sock *sk = sock->sk;
         struct net *net = sock_net(sk);
-        struct nl_portid_hash *hash = &nl_table[sk->sk_protocol].hash;
+        struct netlink_table *table = &nl_table[sk->sk_protocol];
+        struct nl_portid_hash *hash = &table->hash;
         struct hlist_head *head;
         struct sock *osk;
         s32 portid = task_tgid_vnr(current);
@@ -1195,7 +1310,7 @@ retry:
         netlink_table_grab();
         head = nl_portid_hashfn(hash, portid);
         sk_for_each(osk, head) {
-                if (!net_eq(sock_net(osk), net))
+                if (!table->compare(net, osk))
                         continue;
                 if (nlk_sk(osk)->portid == portid) {
                         /* Bind collision, search negative portid values. */
@@ -1420,6 +1535,33 @@ struct sock *netlink_getsockbyfilp(struct file *filp)
         return sock;
 }
 
+static struct sk_buff *netlink_alloc_large_skb(unsigned int size,
+                                               int broadcast)
+{
+        struct sk_buff *skb;
+        void *data;
+
+        if (size <= NLMSG_GOODSIZE || broadcast)
+                return alloc_skb(size, GFP_KERNEL);
+
+        size = SKB_DATA_ALIGN(size) +
+               SKB_DATA_ALIGN(sizeof(struct skb_shared_info));
+
+        data = vmalloc(size);
+        if (data == NULL)
+                return NULL;
+
+        skb = build_skb(data, size);
+        if (skb == NULL)
+                vfree(data);
+        else {
+                skb->head_frag = 0;
+                skb->destructor = netlink_skb_destructor;
+        }
+
+        return skb;
+}
+
 /*
  * Attach a skb to a netlink socket.
  * The caller must hold a reference to the destination socket. On error, the
@@ -1475,6 +1617,8 @@ static int __netlink_sendskb(struct sock *sk, struct sk_buff *skb)
 {
         int len = skb->len;
 
+        netlink_deliver_tap(skb);
+
 #ifdef CONFIG_NETLINK_MMAP
         if (netlink_skb_is_mmaped(skb))
                 netlink_queue_mmaped_skb(sk, skb);
@@ -1510,7 +1654,7 @@ static struct sk_buff *netlink_trim(struct sk_buff *skb, gfp_t allocation)
                 return skb;
 
         delta = skb->end - skb->tail;
-        if (delta * 2 < skb->truesize)
+        if (is_vmalloc_addr(skb->head) || delta * 2 < skb->truesize)
                 return skb;
 
         if (skb_shared(skb)) {
@@ -1535,6 +1679,11 @@ static int netlink_unicast_kernel(struct sock *sk, struct sk_buff *skb,
 
         ret = -ECONNREFUSED;
         if (nlk->netlink_rcv != NULL) {
+                /* We could do a netlink_deliver_tap(skb) here as well
+                 * but since this is intended for the kernel only, we
+                 * should rather let it stay under the hood.
+                 */
+
                 ret = skb->len;
                 netlink_skb_set_owner_r(skb, sk);
                 NETLINK_CB(skb).sk = ssk;
@@ -2096,7 +2245,7 @@ static int netlink_sendmsg(struct kiocb *kiocb, struct socket *sock,
         if (len > sk->sk_sndbuf - 32)
                 goto out;
         err = -ENOBUFS;
-        skb = alloc_skb(len, GFP_KERNEL);
+        skb = netlink_alloc_large_skb(len, dst_group);
         if (skb == NULL)
                 goto out;
 
@@ -2285,6 +2434,8 @@ __netlink_kernel_create(struct net *net, int unit, struct module *module,
                 if (cfg) {
                         nl_table[unit].bind = cfg->bind;
                         nl_table[unit].flags = cfg->flags;
+                        if (cfg->compare)
+                                nl_table[unit].compare = cfg->compare;
                 }
                 nl_table[unit].registered = 1;
         } else {
@@ -2707,6 +2858,7 @@ static void *netlink_seq_next(struct seq_file *seq, void *v, loff_t *pos)
 {
         struct sock *s;
         struct nl_seq_iter *iter;
+        struct net *net;
         int i, j;
 
         ++*pos;
@@ -2714,11 +2866,12 @@ static void *netlink_seq_next(struct seq_file *seq, void *v, loff_t *pos)
         if (v == SEQ_START_TOKEN)
                 return netlink_seq_socket_idx(seq, 0);
 
+        net = seq_file_net(seq);
         iter = seq->private;
         s = v;
         do {
                 s = sk_next(s);
-        } while (s && sock_net(s) != seq_file_net(seq));
+        } while (s && !nl_table[s->sk_protocol].compare(net, s));
         if (s)
                 return s;
 
@@ -2730,7 +2883,8 @@ static void *netlink_seq_next(struct seq_file *seq, void *v, loff_t *pos)
 
                 for (; j <= hash->mask; j++) {
                         s = sk_head(&hash->table[j]);
-                        while (s && sock_net(s) != seq_file_net(seq))
+
+                        while (s && !nl_table[s->sk_protocol].compare(net, s))
                                 s = sk_next(s);
                         if (s) {
                                 iter->link = i;
@@ -2923,8 +3077,12 @@ static int __init netlink_proto_init(void)
                 hash->shift = 0;
                 hash->mask = 0;
                 hash->rehash_time = jiffies;
+
+                nl_table[i].compare = netlink_compare;
         }
 
+        INIT_LIST_HEAD(&netlink_tap_all);
+
         netlink_add_usersock_entry();
 
         sock_register(&netlink_family_ops);
diff --git a/net/netlink/af_netlink.h b/net/netlink/af_netlink.h
index ed8522265f4e..eaa88d187cdc 100644
--- a/net/netlink/af_netlink.h
+++ b/net/netlink/af_netlink.h
@@ -73,6 +73,7 @@ struct netlink_table {
         struct mutex            *cb_mutex;
         struct module           *module;
         void                    (*bind)(int group);
+        bool                    (*compare)(struct net *net, struct sock *sock);
         int                     registered;
 };
 
diff --git a/net/netrom/af_netrom.c b/net/netrom/af_netrom.c
index ec0c80fde69f..698814bfa7ad 100644
--- a/net/netrom/af_netrom.c
+++ b/net/netrom/af_netrom.c
@@ -117,7 +117,7 @@ static void nr_kill_by_device(struct net_device *dev)
  */
 static int nr_device_event(struct notifier_block *this, unsigned long event, void *ptr)
 {
-        struct net_device *dev = (struct net_device *)ptr;
+        struct net_device *dev = netdev_notifier_info_to_dev(ptr);
 
         if (!net_eq(dev_net(dev), &init_net))
                 return NOTIFY_DONE;
diff --git a/net/netrom/sysctl_net_netrom.c b/net/netrom/sysctl_net_netrom.c
index 42f630b9a698..ba1c368b3f18 100644
--- a/net/netrom/sysctl_net_netrom.c
+++ b/net/netrom/sysctl_net_netrom.c
@@ -34,7 +34,7 @@ static int min_reset[]   = {0}, max_reset[]   = {1};
 
 static struct ctl_table_header *nr_table_header;
 
-static ctl_table nr_table[] = {
+static struct ctl_table nr_table[] = {
         {
                 .procname       = "default_path_quality",
                 .data           = &sysctl_netrom_default_path_quality,
diff --git a/net/nfc/core.c b/net/nfc/core.c
index 40d2527693da..dc96a83aa6ab 100644
--- a/net/nfc/core.c
+++ b/net/nfc/core.c
@@ -44,6 +44,47 @@ DEFINE_MUTEX(nfc_devlist_mutex);
 /* NFC device ID bitmap */
 static DEFINE_IDA(nfc_index_ida);
 
+int nfc_fw_upload(struct nfc_dev *dev, const char *firmware_name)
+{
+        int rc = 0;
+
+        pr_debug("%s do firmware %s\n", dev_name(&dev->dev), firmware_name);
+
+        device_lock(&dev->dev);
+
+        if (!device_is_registered(&dev->dev)) {
+                rc = -ENODEV;
+                goto error;
+        }
+
+        if (dev->dev_up) {
+                rc = -EBUSY;
+                goto error;
+        }
+
+        if (!dev->ops->fw_upload) {
+                rc = -EOPNOTSUPP;
+                goto error;
+        }
+
+        dev->fw_upload_in_progress = true;
+        rc = dev->ops->fw_upload(dev, firmware_name);
+        if (rc)
+                dev->fw_upload_in_progress = false;
+
+error:
+        device_unlock(&dev->dev);
+        return rc;
+}
+
+int nfc_fw_upload_done(struct nfc_dev *dev, const char *firmware_name)
+{
+        dev->fw_upload_in_progress = false;
+
+        return nfc_genl_fw_upload_done(dev, firmware_name);
+}
+EXPORT_SYMBOL(nfc_fw_upload_done);
+
 /**
  * nfc_dev_up - turn on the NFC device
  *
@@ -69,6 +110,11 @@ int nfc_dev_up(struct nfc_dev *dev)
                 goto error;
         }
 
+        if (dev->fw_upload_in_progress) {
+                rc = -EBUSY;
+                goto error;
+        }
+
         if (dev->dev_up) {
                 rc = -EALREADY;
                 goto error;
@@ -80,6 +126,13 @@ int nfc_dev_up(struct nfc_dev *dev)
         if (!rc)
                 dev->dev_up = true;
 
+        /* We have to enable the device before discovering SEs */
+        if (dev->ops->discover_se) {
+                rc = dev->ops->discover_se(dev);
+                if (!rc)
+                        pr_warn("SE discovery failed\n");
+        }
+
 error:
         device_unlock(&dev->dev);
         return rc;
@@ -475,6 +528,108 @@ error:
         return rc;
 }
 
+static struct nfc_se *find_se(struct nfc_dev *dev, u32 se_idx)
+{
+        struct nfc_se *se, *n;
+
+        list_for_each_entry_safe(se, n, &dev->secure_elements, list)
+                if (se->idx == se_idx)
+                        return se;
+
+        return NULL;
+}
+
+int nfc_enable_se(struct nfc_dev *dev, u32 se_idx)
+{
+
+        struct nfc_se *se;
+        int rc;
+
+        pr_debug("%s se index %d\n", dev_name(&dev->dev), se_idx);
+
+        device_lock(&dev->dev);
+
+        if (!device_is_registered(&dev->dev)) {
+                rc = -ENODEV;
+                goto error;
+        }
+
+        if (!dev->dev_up) {
+                rc = -ENODEV;
+                goto error;
+        }
+
+        if (dev->polling) {
+                rc = -EBUSY;
+                goto error;
+        }
+
+        if (!dev->ops->enable_se || !dev->ops->disable_se) {
+                rc = -EOPNOTSUPP;
+                goto error;
+        }
+
+        se = find_se(dev, se_idx);
+        if (!se) {
+                rc = -EINVAL;
+                goto error;
+        }
+
+        if (se->type == NFC_SE_ENABLED) {
+                rc = -EALREADY;
+                goto error;
+        }
+
+        rc = dev->ops->enable_se(dev, se_idx);
+
+error:
+        device_unlock(&dev->dev);
+        return rc;
+}
+
+int nfc_disable_se(struct nfc_dev *dev, u32 se_idx)
+{
+
+        struct nfc_se *se;
+        int rc;
+
+        pr_debug("%s se index %d\n", dev_name(&dev->dev), se_idx);
+
+        device_lock(&dev->dev);
+
+        if (!device_is_registered(&dev->dev)) {
+                rc = -ENODEV;
+                goto error;
+        }
+
+        if (!dev->dev_up) {
+                rc = -ENODEV;
+                goto error;
+        }
+
+        if (!dev->ops->enable_se || !dev->ops->disable_se) {
+                rc = -EOPNOTSUPP;
+                goto error;
+        }
+
+        se = find_se(dev, se_idx);
+        if (!se) {
+                rc = -EINVAL;
+                goto error;
+        }
+
+        if (se->type == NFC_SE_DISABLED) {
+                rc = -EALREADY;
+                goto error;
+        }
+
+        rc = dev->ops->disable_se(dev, se_idx);
+
+error:
+        device_unlock(&dev->dev);
+        return rc;
+}
+
 int nfc_set_remote_general_bytes(struct nfc_dev *dev, u8 *gb, u8 gb_len)
 {
         pr_debug("dev_name=%s gb_len=%d\n", dev_name(&dev->dev), gb_len);
@@ -707,14 +862,79 @@ inline void nfc_driver_failure(struct nfc_dev *dev, int err)
 }
 EXPORT_SYMBOL(nfc_driver_failure);
 
+int nfc_add_se(struct nfc_dev *dev, u32 se_idx, u16 type)
+{
+        struct nfc_se *se;
+        int rc;
+
+        pr_debug("%s se index %d\n", dev_name(&dev->dev), se_idx);
+
+        se = find_se(dev, se_idx);
+        if (se)
+                return -EALREADY;
+
+        se = kzalloc(sizeof(struct nfc_se), GFP_KERNEL);
+        if (!se)
+                return -ENOMEM;
+
+        se->idx = se_idx;
+        se->type = type;
+        se->state = NFC_SE_DISABLED;
+        INIT_LIST_HEAD(&se->list);
+
+        list_add(&se->list, &dev->secure_elements);
+
+        rc = nfc_genl_se_added(dev, se_idx, type);
+        if (rc < 0) {
+                list_del(&se->list);
+                kfree(se);
+
+                return rc;
+        }
+
+        return 0;
+}
+EXPORT_SYMBOL(nfc_add_se);
+
+int nfc_remove_se(struct nfc_dev *dev, u32 se_idx)
+{
+        struct nfc_se *se, *n;
+        int rc;
+
+        pr_debug("%s se index %d\n", dev_name(&dev->dev), se_idx);
+
+        list_for_each_entry_safe(se, n, &dev->secure_elements, list)
+                if (se->idx == se_idx) {
+                        rc = nfc_genl_se_removed(dev, se_idx);
+                        if (rc < 0)
+                                return rc;
+
+                        list_del(&se->list);
+                        kfree(se);
+
+                        return 0;
+                }
+
+        return -EINVAL;
+}
+EXPORT_SYMBOL(nfc_remove_se);
+
 static void nfc_release(struct device *d)
 {
         struct nfc_dev *dev = to_nfc_dev(d);
+        struct nfc_se *se, *n;
 
         pr_debug("dev_name=%s\n", dev_name(&dev->dev));
 
         nfc_genl_data_exit(&dev->genl_data);
         kfree(dev->targets);
+
+        list_for_each_entry_safe(se, n, &dev->secure_elements, list) {
+                        nfc_genl_se_removed(dev, se->idx);
+                        list_del(&se->list);
+                        kfree(se);
+        }
+
         kfree(dev);
 }
 
@@ -786,7 +1006,6 @@ struct nfc_dev *nfc_get_device(unsigned int idx)
  */
 struct nfc_dev *nfc_allocate_device(struct nfc_ops *ops,
                                     u32 supported_protocols,
-                                    u32 supported_se,
                                     int tx_headroom, int tx_tailroom)
 {
         struct nfc_dev *dev;
@@ -804,10 +1023,9 @@ struct nfc_dev *nfc_allocate_device(struct nfc_ops *ops,
 
         dev->ops = ops;
         dev->supported_protocols = supported_protocols;
-        dev->supported_se = supported_se;
-        dev->active_se = NFC_SE_NONE;
         dev->tx_headroom = tx_headroom;
         dev->tx_tailroom = tx_tailroom;
+        INIT_LIST_HEAD(&dev->secure_elements);
 
         nfc_genl_data_init(&dev->genl_data);
 
diff --git a/net/nfc/hci/core.c b/net/nfc/hci/core.c
index 91020b210d87..7b1c186736eb 100644
--- a/net/nfc/hci/core.c
+++ b/net/nfc/hci/core.c
@@ -570,21 +570,21 @@ static int hci_dep_link_up(struct nfc_dev *nfc_dev, struct nfc_target *target,
 {
         struct nfc_hci_dev *hdev = nfc_get_drvdata(nfc_dev);
 
-        if (hdev->ops->dep_link_up)
-                return hdev->ops->dep_link_up(hdev, target, comm_mode,
-                                                gb, gb_len);
+        if (!hdev->ops->dep_link_up)
+                return 0;
 
-        return 0;
+        return hdev->ops->dep_link_up(hdev, target, comm_mode,
+                                      gb, gb_len);
 }
 
 static int hci_dep_link_down(struct nfc_dev *nfc_dev)
 {
         struct nfc_hci_dev *hdev = nfc_get_drvdata(nfc_dev);
 
-        if (hdev->ops->dep_link_down)
-                return hdev->ops->dep_link_down(hdev);
+        if (!hdev->ops->dep_link_down)
+                return 0;
 
-        return 0;
+        return hdev->ops->dep_link_down(hdev);
 }
 
 static int hci_activate_target(struct nfc_dev *nfc_dev,
@@ -673,12 +673,12 @@ static int hci_tm_send(struct nfc_dev *nfc_dev, struct sk_buff *skb)
 {
         struct nfc_hci_dev *hdev = nfc_get_drvdata(nfc_dev);
 
-        if (hdev->ops->tm_send)
-                return hdev->ops->tm_send(hdev, skb);
-
-        kfree_skb(skb);
+        if (!hdev->ops->tm_send) {
+                kfree_skb(skb);
+                return -ENOTSUPP;
+        }
 
-        return -ENOTSUPP;
+        return hdev->ops->tm_send(hdev, skb);
 }
 
 static int hci_check_presence(struct nfc_dev *nfc_dev,
@@ -686,8 +686,38 @@ static int hci_check_presence(struct nfc_dev *nfc_dev,
 {
         struct nfc_hci_dev *hdev = nfc_get_drvdata(nfc_dev);
 
-        if (hdev->ops->check_presence)
-                return hdev->ops->check_presence(hdev, target);
+        if (!hdev->ops->check_presence)
+                return 0;
+
+        return hdev->ops->check_presence(hdev, target);
+}
+
+static int hci_discover_se(struct nfc_dev *nfc_dev)
+{
+        struct nfc_hci_dev *hdev = nfc_get_drvdata(nfc_dev);
+
+        if (hdev->ops->discover_se)
+                return hdev->ops->discover_se(hdev);
+
+        return 0;
+}
+
+static int hci_enable_se(struct nfc_dev *nfc_dev, u32 se_idx)
+{
+        struct nfc_hci_dev *hdev = nfc_get_drvdata(nfc_dev);
+
+        if (hdev->ops->enable_se)
+                return hdev->ops->enable_se(hdev, se_idx);
+
+        return 0;
+}
+
+static int hci_disable_se(struct nfc_dev *nfc_dev, u32 se_idx)
+{
+        struct nfc_hci_dev *hdev = nfc_get_drvdata(nfc_dev);
+
+        if (hdev->ops->disable_se)
+                return hdev->ops->enable_se(hdev, se_idx);
 
         return 0;
 }
@@ -779,6 +809,16 @@ static void nfc_hci_recv_from_llc(struct nfc_hci_dev *hdev, struct sk_buff *skb)
         }
 }
 
+static int hci_fw_upload(struct nfc_dev *nfc_dev, const char *firmware_name)
+{
+        struct nfc_hci_dev *hdev = nfc_get_drvdata(nfc_dev);
+
+        if (!hdev->ops->fw_upload)
+                return -ENOTSUPP;
+
+        return hdev->ops->fw_upload(hdev, firmware_name);
+}
+
 static struct nfc_ops hci_nfc_ops = {
         .dev_up = hci_dev_up,
         .dev_down = hci_dev_down,
@@ -791,13 +831,16 @@ static struct nfc_ops hci_nfc_ops = {
         .im_transceive = hci_transceive,
         .tm_send = hci_tm_send,
         .check_presence = hci_check_presence,
+        .fw_upload = hci_fw_upload,
+        .discover_se = hci_discover_se,
+        .enable_se = hci_enable_se,
+        .disable_se = hci_disable_se,
 };
 
 struct nfc_hci_dev *nfc_hci_allocate_device(struct nfc_hci_ops *ops,
                                             struct nfc_hci_init_data *init_data,
                                             unsigned long quirks,
                                             u32 protocols,
-                                            u32 supported_se,
                                             const char *llc_name,
                                             int tx_headroom,
                                             int tx_tailroom,
@@ -823,7 +866,7 @@ struct nfc_hci_dev *nfc_hci_allocate_device(struct nfc_hci_ops *ops,
                 return NULL;
         }
 
-        hdev->ndev = nfc_allocate_device(&hci_nfc_ops, protocols, supported_se,
+        hdev->ndev = nfc_allocate_device(&hci_nfc_ops, protocols,
                                          tx_headroom + HCI_CMDS_HEADROOM,
                                          tx_tailroom);
         if (!hdev->ndev) {
diff --git a/net/nfc/llcp.h b/net/nfc/llcp.h
index ff8c434f7df8..f4d48b57ea11 100644
--- a/net/nfc/llcp.h
+++ b/net/nfc/llcp.h
@@ -19,6 +19,8 @@
 
 enum llcp_state {
         LLCP_CONNECTED = 1, /* wait_for_packet() wants that */
+        LLCP_CONNECTING,
+        LLCP_DISCONNECTING,
         LLCP_CLOSED,
         LLCP_BOUND,
         LLCP_LISTEN,
@@ -246,7 +248,6 @@ struct nfc_llcp_sdp_tlv *nfc_llcp_build_sdreq_tlv(u8 tid, char *uri,
 void nfc_llcp_free_sdp_tlv(struct nfc_llcp_sdp_tlv *sdp);
 void nfc_llcp_free_sdp_tlv_list(struct hlist_head *sdp_head);
 void nfc_llcp_recv(void *data, struct sk_buff *skb, int err);
-int nfc_llcp_disconnect(struct nfc_llcp_sock *sock);
 int nfc_llcp_send_symm(struct nfc_dev *dev);
 int nfc_llcp_send_connect(struct nfc_llcp_sock *sock);
 int nfc_llcp_send_cc(struct nfc_llcp_sock *sock);
diff --git a/net/nfc/llcp_commands.c b/net/nfc/llcp_commands.c
index c1b23eef83ca..1017894807c0 100644
--- a/net/nfc/llcp_commands.c
+++ b/net/nfc/llcp_commands.c
@@ -339,7 +339,7 @@ static struct sk_buff *llcp_allocate_pdu(struct nfc_llcp_sock *sock,
         return skb;
 }
 
-int nfc_llcp_disconnect(struct nfc_llcp_sock *sock)
+int nfc_llcp_send_disconnect(struct nfc_llcp_sock *sock)
 {
         struct sk_buff *skb;
         struct nfc_dev *dev;
@@ -630,26 +630,6 @@ int nfc_llcp_send_dm(struct nfc_llcp_local *local, u8 ssap, u8 dsap, u8 reason)
         return 0;
 }
 
-int nfc_llcp_send_disconnect(struct nfc_llcp_sock *sock)
-{
-        struct sk_buff *skb;
-        struct nfc_llcp_local *local;
-
-        pr_debug("Send DISC\n");
-
-        local = sock->local;
-        if (local == NULL)
-                return -ENODEV;
-
-        skb = llcp_allocate_pdu(sock, LLCP_PDU_DISC, 0);
-        if (skb == NULL)
-                return -ENOMEM;
-
-        skb_queue_head(&local->tx_queue, skb);
-
-        return 0;
-}
-
 int nfc_llcp_send_i_frame(struct nfc_llcp_sock *sock,
                           struct msghdr *msg, size_t len)
 {
diff --git a/net/nfc/llcp_core.c b/net/nfc/llcp_core.c
index 158bdbf668cc..81cd3416c7d4 100644
--- a/net/nfc/llcp_core.c
+++ b/net/nfc/llcp_core.c
@@ -537,6 +537,7 @@ static int nfc_llcp_build_gb(struct nfc_llcp_local *local)
         u8 *lto_tlv, lto_length;
         u8 *wks_tlv, wks_length;
         u8 *miux_tlv, miux_length;
+        __be16 wks = cpu_to_be16(local->local_wks);
         u8 gb_len = 0;
         int ret = 0;
 
@@ -549,8 +550,7 @@ static int nfc_llcp_build_gb(struct nfc_llcp_local *local)
         gb_len += lto_length;
 
         pr_debug("Local wks 0x%lx\n", local->local_wks);
-        wks_tlv = nfc_llcp_build_tlv(LLCP_TLV_WKS, (u8 *)&local->local_wks, 2,
-                                     &wks_length);
+        wks_tlv = nfc_llcp_build_tlv(LLCP_TLV_WKS, (u8 *)&wks, 2, &wks_length);
         gb_len += wks_length;
 
         miux_tlv = nfc_llcp_build_tlv(LLCP_TLV_MIUX, (u8 *)&local->miux, 0,
@@ -719,6 +719,10 @@ static void nfc_llcp_tx_work(struct work_struct *work)
                 llcp_sock = nfc_llcp_sock(sk);
 
                 if (llcp_sock == NULL && nfc_llcp_ptype(skb) == LLCP_PDU_I) {
+                        kfree_skb(skb);
+                        nfc_llcp_send_symm(local->dev);
+                } else if (llcp_sock && !llcp_sock->remote_ready) {
+                        skb_queue_head(&local->tx_queue, skb);
                         nfc_llcp_send_symm(local->dev);
                 } else {
                         struct sk_buff *copy_skb = NULL;
@@ -730,6 +734,13 @@ static void nfc_llcp_tx_work(struct work_struct *work)
                                        DUMP_PREFIX_OFFSET, 16, 1,
                                        skb->data, skb->len, true);
 
+                        if (ptype == LLCP_PDU_DISC && sk != NULL &&
+                            sk->sk_state == LLCP_DISCONNECTING) {
+                                nfc_llcp_sock_unlink(&local->sockets, sk);
+                                sock_orphan(sk);
+                                sock_put(sk);
+                        }
+
                         if (ptype == LLCP_PDU_I)
                                 copy_skb = skb_copy(skb, GFP_ATOMIC);
 
@@ -1579,6 +1590,7 @@ int nfc_llcp_register_device(struct nfc_dev *ndev)
         local->lto = 150; /* 1500 ms */
         local->rw = LLCP_MAX_RW;
         local->miux = cpu_to_be16(LLCP_MAX_MIUX);
+        local->local_wks = 0x1; /* LLC Link Management */
 
         nfc_llcp_build_gb(local);
 
diff --git a/net/nfc/llcp_sock.c b/net/nfc/llcp_sock.c
index 380253eccb74..d308402b67d8 100644
--- a/net/nfc/llcp_sock.c
+++ b/net/nfc/llcp_sock.c
@@ -571,7 +571,7 @@ static unsigned int llcp_sock_poll(struct file *file, struct socket *sock,
         if (sk->sk_shutdown == SHUTDOWN_MASK)
                 mask |= POLLHUP;
 
-        if (sock_writeable(sk))
+        if (sock_writeable(sk) && sk->sk_state == LLCP_CONNECTED)
                 mask |= POLLOUT | POLLWRNORM | POLLWRBAND;
         else
                 set_bit(SOCK_ASYNC_NOSPACE, &sk->sk_socket->flags);
@@ -603,7 +603,7 @@ static int llcp_sock_release(struct socket *sock)
 
         /* Send a DISC */
         if (sk->sk_state == LLCP_CONNECTED)
-                nfc_llcp_disconnect(llcp_sock);
+                nfc_llcp_send_disconnect(llcp_sock);
 
         if (sk->sk_state == LLCP_LISTEN) {
                 struct nfc_llcp_sock *lsk, *n;
@@ -614,7 +614,7 @@ static int llcp_sock_release(struct socket *sock)
                         accept_sk = &lsk->sk;
                         lock_sock(accept_sk);
 
-                        nfc_llcp_disconnect(lsk);
+                        nfc_llcp_send_disconnect(lsk);
                         nfc_llcp_accept_unlink(accept_sk);
 
                         release_sock(accept_sk);
@@ -626,6 +626,13 @@ static int llcp_sock_release(struct socket *sock)
 
         release_sock(sk);
 
+        /* Keep this sock alive and therefore do not remove it from the sockets
+         * list until the DISC PDU has been actually sent. Otherwise we would
+         * reply with DM PDUs before sending the DISC one.
+         */
+        if (sk->sk_state == LLCP_DISCONNECTING)
+                return err;
+
         if (sock->type == SOCK_RAW)
                 nfc_llcp_sock_unlink(&local->raw_sockets, sk);
         else
@@ -722,14 +729,16 @@ static int llcp_sock_connect(struct socket *sock, struct sockaddr *_addr,
         if (ret)
                 goto sock_unlink;
 
+        sk->sk_state = LLCP_CONNECTING;
+
         ret = sock_wait_state(sk, LLCP_CONNECTED,
                               sock_sndtimeo(sk, flags & O_NONBLOCK));
-        if (ret)
+        if (ret && ret != -EINPROGRESS)
                 goto sock_unlink;
 
         release_sock(sk);
 
-        return 0;
+        return ret;
 
 sock_unlink:
         nfc_llcp_put_ssap(local, llcp_sock->ssap);
diff --git a/net/nfc/nci/Kconfig b/net/nfc/nci/Kconfig
index 6d69b5f0f19b..2a2416080b4f 100644
--- a/net/nfc/nci/Kconfig
+++ b/net/nfc/nci/Kconfig
@@ -8,3 +8,13 @@ config NFC_NCI
 
           Say Y here to compile NCI support into the kernel or say M to
           compile it as module (nci).
+
+config NFC_NCI_SPI
+        depends on NFC_NCI && SPI
+        bool "NCI over SPI protocol support"
+        default n
+        help
+          NCI (NFC Controller Interface) is a communication protocol between
+          an NFC Controller (NFCC) and a Device Host (DH).
+
+          Say yes if you use an NCI driver that requires SPI link layer.
diff --git a/net/nfc/nci/Makefile b/net/nfc/nci/Makefile
index cdb3a2e44471..7aeedc43187d 100644
--- a/net/nfc/nci/Makefile
+++ b/net/nfc/nci/Makefile
@@ -4,4 +4,6 @@
 
 obj-$(CONFIG_NFC_NCI) += nci.o
 
-nci-objs := core.o data.o lib.o ntf.o rsp.o
\ No newline at end of file
+nci-objs := core.o data.o lib.o ntf.o rsp.o
+
+nci-$(CONFIG_NFC_NCI_SPI) += spi.o
diff --git a/net/nfc/nci/core.c b/net/nfc/nci/core.c
index 48ada0ec749e..b943d46a1644 100644
--- a/net/nfc/nci/core.c
+++ b/net/nfc/nci/core.c
@@ -636,6 +636,21 @@ static int nci_transceive(struct nfc_dev *nfc_dev, struct nfc_target *target,
         return rc;
 }
 
+static int nci_enable_se(struct nfc_dev *nfc_dev, u32 se_idx)
+{
+        return 0;
+}
+
+static int nci_disable_se(struct nfc_dev *nfc_dev, u32 se_idx)
+{
+        return 0;
+}
+
+static int nci_discover_se(struct nfc_dev *nfc_dev)
+{
+        return 0;
+}
+
 static struct nfc_ops nci_nfc_ops = {
         .dev_up = nci_dev_up,
         .dev_down = nci_dev_down,
@@ -646,6 +661,9 @@ static struct nfc_ops nci_nfc_ops = {
         .activate_target = nci_activate_target,
         .deactivate_target = nci_deactivate_target,
         .im_transceive = nci_transceive,
+        .enable_se = nci_enable_se,
+        .disable_se = nci_disable_se,
+        .discover_se = nci_discover_se,
 };
 
 /* ---- Interface to NCI drivers ---- */
@@ -658,7 +676,6 @@ static struct nfc_ops nci_nfc_ops = {
  */
 struct nci_dev *nci_allocate_device(struct nci_ops *ops,
                                     __u32 supported_protocols,
-                                    __u32 supported_se,
                                     int tx_headroom, int tx_tailroom)
 {
         struct nci_dev *ndev;
@@ -681,7 +698,6 @@ struct nci_dev *nci_allocate_device(struct nci_ops *ops,
 
         ndev->nfc_dev = nfc_allocate_device(&nci_nfc_ops,
                                             supported_protocols,
-                                            supported_se,
                                             tx_headroom + NCI_DATA_HDR_SIZE,
                                             tx_tailroom);
         if (!ndev->nfc_dev)
@@ -797,12 +813,11 @@ EXPORT_SYMBOL(nci_unregister_device);
 /**
  * nci_recv_frame - receive frame from NCI drivers
  *
+ * @ndev: The nci device
  * @skb: The sk_buff to receive
  */
-int nci_recv_frame(struct sk_buff *skb)
+int nci_recv_frame(struct nci_dev *ndev, struct sk_buff *skb)
 {
-        struct nci_dev *ndev = (struct nci_dev *) skb->dev;
-
         pr_debug("len %d\n", skb->len);
 
         if (!ndev || (!test_bit(NCI_UP, &ndev->flags) &&
@@ -819,10 +834,8 @@ int nci_recv_frame(struct sk_buff *skb)
 }
 EXPORT_SYMBOL(nci_recv_frame);
 
-static int nci_send_frame(struct sk_buff *skb)
+static int nci_send_frame(struct nci_dev *ndev, struct sk_buff *skb)
 {
-        struct nci_dev *ndev = (struct nci_dev *) skb->dev;
-
         pr_debug("len %d\n", skb->len);
 
         if (!ndev) {
@@ -833,7 +846,7 @@ static int nci_send_frame(struct sk_buff *skb)
         /* Get rid of skb owner, prior to sending to the driver. */
         skb_orphan(skb);
 
-        return ndev->ops->send(skb);
+        return ndev->ops->send(ndev, skb);
 }
 
 /* Send NCI command */
@@ -861,8 +874,6 @@ int nci_send_cmd(struct nci_dev *ndev, __u16 opcode, __u8 plen, void *payload)
         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);
 
@@ -894,7 +905,7 @@ static void nci_tx_work(struct work_struct *work)
                          nci_conn_id(skb->data),
                          nci_plen(skb->data));
 
-                nci_send_frame(skb);
+                nci_send_frame(ndev, skb);
 
                 mod_timer(&ndev->data_timer,
                           jiffies + msecs_to_jiffies(NCI_DATA_TIMEOUT));
@@ -963,7 +974,7 @@ static void nci_cmd_work(struct work_struct *work)
                          nci_opcode_oid(nci_opcode(skb->data)),
                          nci_plen(skb->data));
 
-                nci_send_frame(skb);
+                nci_send_frame(ndev, 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
index 76c48c5324f8..2a9399dd6c68 100644
--- a/net/nfc/nci/data.c
+++ b/net/nfc/nci/data.c
@@ -80,8 +80,6 @@ static inline void nci_push_data_hdr(struct nci_dev *ndev,
 
         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,
diff --git a/net/nfc/nci/spi.c b/net/nfc/nci/spi.c
new file mode 100644
index 000000000000..c7cf37ba7298
--- /dev/null
+++ b/net/nfc/nci/spi.c
@@ -0,0 +1,378 @@
+/*
+ * Copyright (C) 2013  Intel Corporation. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope 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 St - Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ */
+
+#define pr_fmt(fmt) "nci_spi: %s: " fmt, __func__
+
+#include <linux/export.h>
+#include <linux/spi/spi.h>
+#include <linux/crc-ccitt.h>
+#include <linux/nfc.h>
+#include <net/nfc/nci_core.h>
+
+#define NCI_SPI_HDR_LEN                 4
+#define NCI_SPI_CRC_LEN                 2
+#define NCI_SPI_ACK_SHIFT               6
+#define NCI_SPI_MSB_PAYLOAD_MASK        0x3F
+
+#define NCI_SPI_SEND_TIMEOUT    (NCI_CMD_TIMEOUT > NCI_DATA_TIMEOUT ? \
+                                        NCI_CMD_TIMEOUT : NCI_DATA_TIMEOUT)
+
+#define NCI_SPI_DIRECT_WRITE    0x01
+#define NCI_SPI_DIRECT_READ     0x02
+
+#define ACKNOWLEDGE_NONE        0
+#define ACKNOWLEDGE_ACK         1
+#define ACKNOWLEDGE_NACK        2
+
+#define CRC_INIT                0xFFFF
+
+static int nci_spi_open(struct nci_dev *nci_dev)
+{
+        struct nci_spi_dev *ndev = nci_get_drvdata(nci_dev);
+
+        return ndev->ops->open(ndev);
+}
+
+static int nci_spi_close(struct nci_dev *nci_dev)
+{
+        struct nci_spi_dev *ndev = nci_get_drvdata(nci_dev);
+
+        return ndev->ops->close(ndev);
+}
+
+static int __nci_spi_send(struct nci_spi_dev *ndev, struct sk_buff *skb)
+{
+        struct spi_message m;
+        struct spi_transfer t;
+
+        t.tx_buf = skb->data;
+        t.len = skb->len;
+        t.cs_change = 0;
+        t.delay_usecs = ndev->xfer_udelay;
+
+        spi_message_init(&m);
+        spi_message_add_tail(&t, &m);
+
+        return spi_sync(ndev->spi, &m);
+}
+
+static int nci_spi_send(struct nci_dev *nci_dev, struct sk_buff *skb)
+{
+        struct nci_spi_dev *ndev = nci_get_drvdata(nci_dev);
+        unsigned int payload_len = skb->len;
+        unsigned char *hdr;
+        int ret;
+        long completion_rc;
+
+        ndev->ops->deassert_int(ndev);
+
+        /* add the NCI SPI header to the start of the buffer */
+        hdr = skb_push(skb, NCI_SPI_HDR_LEN);
+        hdr[0] = NCI_SPI_DIRECT_WRITE;
+        hdr[1] = ndev->acknowledge_mode;
+        hdr[2] = payload_len >> 8;
+        hdr[3] = payload_len & 0xFF;
+
+        if (ndev->acknowledge_mode == NCI_SPI_CRC_ENABLED) {
+                u16 crc;
+
+                crc = crc_ccitt(CRC_INIT, skb->data, skb->len);
+                *skb_put(skb, 1) = crc >> 8;
+                *skb_put(skb, 1) = crc & 0xFF;
+        }
+
+        ret = __nci_spi_send(ndev, skb);
+
+        kfree_skb(skb);
+        ndev->ops->assert_int(ndev);
+
+        if (ret != 0 || ndev->acknowledge_mode == NCI_SPI_CRC_DISABLED)
+                goto done;
+
+        init_completion(&ndev->req_completion);
+        completion_rc =
+                wait_for_completion_interruptible_timeout(&ndev->req_completion,
+                                                          NCI_SPI_SEND_TIMEOUT);
+
+        if (completion_rc <= 0 || ndev->req_result == ACKNOWLEDGE_NACK)
+                ret = -EIO;
+
+done:
+        return ret;
+}
+
+static struct nci_ops nci_spi_ops = {
+        .open = nci_spi_open,
+        .close = nci_spi_close,
+        .send = nci_spi_send,
+};
+
+/* ---- Interface to NCI SPI drivers ---- */
+
+/**
+ * nci_spi_allocate_device - allocate a new nci spi device
+ *
+ * @spi: SPI device
+ * @ops: device operations
+ * @supported_protocols: NFC protocols supported by the device
+ * @supported_se: NFC Secure Elements supported by the device
+ * @acknowledge_mode: Acknowledge mode used by the device
+ * @delay: delay between transactions in us
+ */
+struct nci_spi_dev *nci_spi_allocate_device(struct spi_device *spi,
+                                                struct nci_spi_ops *ops,
+                                                u32 supported_protocols,
+                                                u32 supported_se,
+                                                u8 acknowledge_mode,
+                                                unsigned int delay)
+{
+        struct nci_spi_dev *ndev;
+        int tailroom = 0;
+
+        if (!ops->open || !ops->close || !ops->assert_int || !ops->deassert_int)
+                return NULL;
+
+        if (!supported_protocols)
+                return NULL;
+
+        ndev = devm_kzalloc(&spi->dev, sizeof(struct nci_dev), GFP_KERNEL);
+        if (!ndev)
+                return NULL;
+
+        ndev->ops = ops;
+        ndev->acknowledge_mode = acknowledge_mode;
+        ndev->xfer_udelay = delay;
+
+        if (acknowledge_mode == NCI_SPI_CRC_ENABLED)
+                tailroom += NCI_SPI_CRC_LEN;
+
+        ndev->nci_dev = nci_allocate_device(&nci_spi_ops, supported_protocols,
+                                            NCI_SPI_HDR_LEN, tailroom);
+        if (!ndev->nci_dev)
+                return NULL;
+
+        nci_set_drvdata(ndev->nci_dev, ndev);
+
+        return ndev;
+}
+EXPORT_SYMBOL_GPL(nci_spi_allocate_device);
+
+/**
+ * nci_spi_free_device - deallocate nci spi device
+ *
+ * @ndev: The nci spi device to deallocate
+ */
+void nci_spi_free_device(struct nci_spi_dev *ndev)
+{
+        nci_free_device(ndev->nci_dev);
+}
+EXPORT_SYMBOL_GPL(nci_spi_free_device);
+
+/**
+ * nci_spi_register_device - register a nci spi device in the nfc subsystem
+ *
+ * @pdev: The nci spi device to register
+ */
+int nci_spi_register_device(struct nci_spi_dev *ndev)
+{
+        return nci_register_device(ndev->nci_dev);
+}
+EXPORT_SYMBOL_GPL(nci_spi_register_device);
+
+/**
+ * nci_spi_unregister_device - unregister a nci spi device in the nfc subsystem
+ *
+ * @dev: The nci spi device to unregister
+ */
+void nci_spi_unregister_device(struct nci_spi_dev *ndev)
+{
+        nci_unregister_device(ndev->nci_dev);
+}
+EXPORT_SYMBOL_GPL(nci_spi_unregister_device);
+
+static int send_acknowledge(struct nci_spi_dev *ndev, u8 acknowledge)
+{
+        struct sk_buff *skb;
+        unsigned char *hdr;
+        u16 crc;
+        int ret;
+
+        skb = nci_skb_alloc(ndev->nci_dev, 0, GFP_KERNEL);
+
+        /* add the NCI SPI header to the start of the buffer */
+        hdr = skb_push(skb, NCI_SPI_HDR_LEN);
+        hdr[0] = NCI_SPI_DIRECT_WRITE;
+        hdr[1] = NCI_SPI_CRC_ENABLED;
+        hdr[2] = acknowledge << NCI_SPI_ACK_SHIFT;
+        hdr[3] = 0;
+
+        crc = crc_ccitt(CRC_INIT, skb->data, skb->len);
+        *skb_put(skb, 1) = crc >> 8;
+        *skb_put(skb, 1) = crc & 0xFF;
+
+        ret = __nci_spi_send(ndev, skb);
+
+        kfree_skb(skb);
+
+        return ret;
+}
+
+static struct sk_buff *__nci_spi_recv_frame(struct nci_spi_dev *ndev)
+{
+        struct sk_buff *skb;
+        struct spi_message m;
+        unsigned char req[2], resp_hdr[2];
+        struct spi_transfer tx, rx;
+        unsigned short rx_len = 0;
+        int ret;
+
+        spi_message_init(&m);
+        req[0] = NCI_SPI_DIRECT_READ;
+        req[1] = ndev->acknowledge_mode;
+        tx.tx_buf = req;
+        tx.len = 2;
+        tx.cs_change = 0;
+        spi_message_add_tail(&tx, &m);
+        rx.rx_buf = resp_hdr;
+        rx.len = 2;
+        rx.cs_change = 1;
+        spi_message_add_tail(&rx, &m);
+        ret = spi_sync(ndev->spi, &m);
+
+        if (ret)
+                return NULL;
+
+        if (ndev->acknowledge_mode == NCI_SPI_CRC_ENABLED)
+                rx_len = ((resp_hdr[0] & NCI_SPI_MSB_PAYLOAD_MASK) << 8) +
+                                resp_hdr[1] + NCI_SPI_CRC_LEN;
+        else
+                rx_len = (resp_hdr[0] << 8) | resp_hdr[1];
+
+        skb = nci_skb_alloc(ndev->nci_dev, rx_len, GFP_KERNEL);
+        if (!skb)
+                return NULL;
+
+        spi_message_init(&m);
+        rx.rx_buf = skb_put(skb, rx_len);
+        rx.len = rx_len;
+        rx.cs_change = 0;
+        rx.delay_usecs = ndev->xfer_udelay;
+        spi_message_add_tail(&rx, &m);
+        ret = spi_sync(ndev->spi, &m);
+
+        if (ret)
+                goto receive_error;
+
+        if (ndev->acknowledge_mode == NCI_SPI_CRC_ENABLED) {
+                *skb_push(skb, 1) = resp_hdr[1];
+                *skb_push(skb, 1) = resp_hdr[0];
+        }
+
+        return skb;
+
+receive_error:
+        kfree_skb(skb);
+
+        return NULL;
+}
+
+static int nci_spi_check_crc(struct sk_buff *skb)
+{
+        u16 crc_data = (skb->data[skb->len - 2] << 8) |
+                        skb->data[skb->len - 1];
+        int ret;
+
+        ret = (crc_ccitt(CRC_INIT, skb->data, skb->len - NCI_SPI_CRC_LEN)
+                        == crc_data);
+
+        skb_trim(skb, skb->len - NCI_SPI_CRC_LEN);
+
+        return ret;
+}
+
+static u8 nci_spi_get_ack(struct sk_buff *skb)
+{
+        u8 ret;
+
+        ret = skb->data[0] >> NCI_SPI_ACK_SHIFT;
+
+        /* Remove NFCC part of the header: ACK, NACK and MSB payload len */
+        skb_pull(skb, 2);
+
+        return ret;
+}
+
+/**
+ * nci_spi_recv_frame - receive frame from NCI SPI drivers
+ *
+ * @ndev: The nci spi device
+ * Context: can sleep
+ *
+ * This call may only be used from a context that may sleep.  The sleep
+ * is non-interruptible, and has no timeout.
+ *
+ * It returns zero on success, else a negative error code.
+ */
+int nci_spi_recv_frame(struct nci_spi_dev *ndev)
+{
+        struct sk_buff *skb;
+        int ret = 0;
+
+        ndev->ops->deassert_int(ndev);
+
+        /* Retrieve frame from SPI */
+        skb = __nci_spi_recv_frame(ndev);
+        if (!skb) {
+                ret = -EIO;
+                goto done;
+        }
+
+        if (ndev->acknowledge_mode == NCI_SPI_CRC_ENABLED) {
+                if (!nci_spi_check_crc(skb)) {
+                        send_acknowledge(ndev, ACKNOWLEDGE_NACK);
+                        goto done;
+                }
+
+                /* In case of acknowledged mode: if ACK or NACK received,
+                 * unblock completion of latest frame sent.
+                 */
+                ndev->req_result = nci_spi_get_ack(skb);
+                if (ndev->req_result)
+                        complete(&ndev->req_completion);
+        }
+
+        /* If there is no payload (ACK/NACK only frame),
+         * free the socket buffer
+         */
+        if (skb->len == 0) {
+                kfree_skb(skb);
+                goto done;
+        }
+
+        if (ndev->acknowledge_mode == NCI_SPI_CRC_ENABLED)
+                send_acknowledge(ndev, ACKNOWLEDGE_ACK);
+
+        /* Forward skb to NCI core layer */
+        ret = nci_recv_frame(ndev->nci_dev, skb);
+
+done:
+        ndev->ops->assert_int(ndev);
+
+        return ret;
+}
+EXPORT_SYMBOL_GPL(nci_spi_recv_frame);
diff --git a/net/nfc/netlink.c b/net/nfc/netlink.c
index f0c4d61f37c0..b05ad909778f 100644
--- a/net/nfc/netlink.c
+++ b/net/nfc/netlink.c
@@ -56,6 +56,8 @@ static const struct nla_policy nfc_genl_policy[NFC_ATTR_MAX + 1] = {
         [NFC_ATTR_LLC_PARAM_RW] = { .type = NLA_U8 },
         [NFC_ATTR_LLC_PARAM_MIUX] = { .type = NLA_U16 },
         [NFC_ATTR_LLC_SDP] = { .type = NLA_NESTED },
+        [NFC_ATTR_FIRMWARE_NAME] = { .type = NLA_STRING,
+                                     .len = NFC_FIRMWARE_NAME_MAXSIZE },
 };
 
 static const struct nla_policy nfc_sdp_genl_policy[NFC_SDP_ATTR_MAX + 1] = {
@@ -424,6 +426,69 @@ free_msg:
         return rc;
 }
 
+int nfc_genl_se_added(struct nfc_dev *dev, u32 se_idx, u16 type)
+{
+        struct sk_buff *msg;
+        void *hdr;
+
+        msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
+        if (!msg)
+                return -ENOMEM;
+
+        hdr = genlmsg_put(msg, 0, 0, &nfc_genl_family, 0,
+                          NFC_EVENT_SE_ADDED);
+        if (!hdr)
+                goto free_msg;
+
+        if (nla_put_u32(msg, NFC_ATTR_DEVICE_INDEX, dev->idx) ||
+            nla_put_u32(msg, NFC_ATTR_SE_INDEX, se_idx) ||
+            nla_put_u8(msg, NFC_ATTR_SE_TYPE, type))
+                goto nla_put_failure;
+
+        genlmsg_end(msg, hdr);
+
+        genlmsg_multicast(msg, 0, nfc_genl_event_mcgrp.id, GFP_KERNEL);
+
+        return 0;
+
+nla_put_failure:
+        genlmsg_cancel(msg, hdr);
+free_msg:
+        nlmsg_free(msg);
+        return -EMSGSIZE;
+}
+
+int nfc_genl_se_removed(struct nfc_dev *dev, u32 se_idx)
+{
+        struct sk_buff *msg;
+        void *hdr;
+
+        msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
+        if (!msg)
+                return -ENOMEM;
+
+        hdr = genlmsg_put(msg, 0, 0, &nfc_genl_family, 0,
+                          NFC_EVENT_SE_REMOVED);
+        if (!hdr)
+                goto free_msg;
+
+        if (nla_put_u32(msg, NFC_ATTR_DEVICE_INDEX, dev->idx) ||
+            nla_put_u32(msg, NFC_ATTR_SE_INDEX, se_idx))
+                goto nla_put_failure;
+
+        genlmsg_end(msg, hdr);
+
+        genlmsg_multicast(msg, 0, nfc_genl_event_mcgrp.id, GFP_KERNEL);
+
+        return 0;
+
+nla_put_failure:
+        genlmsg_cancel(msg, hdr);
+free_msg:
+        nlmsg_free(msg);
+        return -EMSGSIZE;
+}
+
 static int nfc_genl_send_device(struct sk_buff *msg, struct nfc_dev *dev,
                                 u32 portid, u32 seq,
                                 struct netlink_callback *cb,
@@ -442,7 +507,6 @@ static int nfc_genl_send_device(struct sk_buff *msg, struct nfc_dev *dev,
         if (nla_put_string(msg, NFC_ATTR_DEVICE_NAME, nfc_device_name(dev)) ||
             nla_put_u32(msg, NFC_ATTR_DEVICE_INDEX, dev->idx) ||
             nla_put_u32(msg, NFC_ATTR_PROTOCOLS, dev->supported_protocols) ||
-            nla_put_u32(msg, NFC_ATTR_SE, dev->supported_se) ||
             nla_put_u8(msg, NFC_ATTR_DEVICE_POWERED, dev->dev_up) ||
             nla_put_u8(msg, NFC_ATTR_RF_MODE, dev->rf_mode))
                 goto nla_put_failure;
@@ -1025,6 +1089,108 @@ exit:
         return rc;
 }
 
+static int nfc_genl_fw_upload(struct sk_buff *skb, struct genl_info *info)
+{
+        struct nfc_dev *dev;
+        int rc;
+        u32 idx;
+        char firmware_name[NFC_FIRMWARE_NAME_MAXSIZE + 1];
+
+        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;
+
+        nla_strlcpy(firmware_name, info->attrs[NFC_ATTR_FIRMWARE_NAME],
+                    sizeof(firmware_name));
+
+        rc = nfc_fw_upload(dev, firmware_name);
+
+        nfc_put_device(dev);
+        return rc;
+}
+
+int nfc_genl_fw_upload_done(struct nfc_dev *dev, const char *firmware_name)
+{
+        struct sk_buff *msg;
+        void *hdr;
+
+        msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
+        if (!msg)
+                return -ENOMEM;
+
+        hdr = genlmsg_put(msg, 0, 0, &nfc_genl_family, 0,
+                          NFC_CMD_FW_UPLOAD);
+        if (!hdr)
+                goto free_msg;
+
+        if (nla_put_string(msg, NFC_ATTR_FIRMWARE_NAME, firmware_name) ||
+            nla_put_u32(msg, NFC_ATTR_DEVICE_INDEX, dev->idx))
+                goto nla_put_failure;
+
+        genlmsg_end(msg, hdr);
+
+        genlmsg_multicast(msg, 0, nfc_genl_event_mcgrp.id, GFP_KERNEL);
+
+        return 0;
+
+nla_put_failure:
+        genlmsg_cancel(msg, hdr);
+free_msg:
+        nlmsg_free(msg);
+        return -EMSGSIZE;
+}
+
+static int nfc_genl_enable_se(struct sk_buff *skb, struct genl_info *info)
+{
+        struct nfc_dev *dev;
+        int rc;
+        u32 idx, se_idx;
+
+        if (!info->attrs[NFC_ATTR_DEVICE_INDEX] ||
+            !info->attrs[NFC_ATTR_SE_INDEX])
+                return -EINVAL;
+
+        idx = nla_get_u32(info->attrs[NFC_ATTR_DEVICE_INDEX]);
+        se_idx = nla_get_u32(info->attrs[NFC_ATTR_SE_INDEX]);
+
+        dev = nfc_get_device(idx);
+        if (!dev)
+                return -ENODEV;
+
+        rc = nfc_enable_se(dev, se_idx);
+
+        nfc_put_device(dev);
+        return rc;
+}
+
+static int nfc_genl_disable_se(struct sk_buff *skb, struct genl_info *info)
+{
+        struct nfc_dev *dev;
+        int rc;
+        u32 idx, se_idx;
+
+        if (!info->attrs[NFC_ATTR_DEVICE_INDEX] ||
+            !info->attrs[NFC_ATTR_SE_INDEX])
+                return -EINVAL;
+
+        idx = nla_get_u32(info->attrs[NFC_ATTR_DEVICE_INDEX]);
+        se_idx = nla_get_u32(info->attrs[NFC_ATTR_SE_INDEX]);
+
+        dev = nfc_get_device(idx);
+        if (!dev)
+                return -ENODEV;
+
+        rc = nfc_disable_se(dev, se_idx);
+
+        nfc_put_device(dev);
+        return rc;
+}
+
 static struct genl_ops nfc_genl_ops[] = {
         {
                 .cmd = NFC_CMD_GET_DEVICE,
@@ -1084,6 +1250,21 @@ static struct genl_ops nfc_genl_ops[] = {
                 .doit = nfc_genl_llc_sdreq,
                 .policy = nfc_genl_policy,
         },
+        {
+                .cmd = NFC_CMD_FW_UPLOAD,
+                .doit = nfc_genl_fw_upload,
+                .policy = nfc_genl_policy,
+        },
+        {
+                .cmd = NFC_CMD_ENABLE_SE,
+                .doit = nfc_genl_enable_se,
+                .policy = nfc_genl_policy,
+        },
+        {
+                .cmd = NFC_CMD_DISABLE_SE,
+                .doit = nfc_genl_disable_se,
+                .policy = nfc_genl_policy,
+        },
 };
 
 
diff --git a/net/nfc/nfc.h b/net/nfc/nfc.h
index afa1f84ba040..ee85a1fc1b24 100644
--- a/net/nfc/nfc.h
+++ b/net/nfc/nfc.h
@@ -94,6 +94,9 @@ int nfc_genl_tm_deactivated(struct nfc_dev *dev);
 
 int nfc_genl_llc_send_sdres(struct nfc_dev *dev, struct hlist_head *sdres_list);
 
+int nfc_genl_se_added(struct nfc_dev *dev, u32 se_idx, u16 type);
+int nfc_genl_se_removed(struct nfc_dev *dev, u32 se_idx);
+
 struct nfc_dev *nfc_get_device(unsigned int idx);
 
 static inline void nfc_put_device(struct nfc_dev *dev)
@@ -120,6 +123,11 @@ static inline void nfc_device_iter_exit(struct class_dev_iter *iter)
         class_dev_iter_exit(iter);
 }
 
+int nfc_fw_upload(struct nfc_dev *dev, const char *firmware_name);
+int nfc_genl_fw_upload_done(struct nfc_dev *dev, const char *firmware_name);
+
+int nfc_fw_upload_done(struct nfc_dev *dev, const char *firmware_name);
+
 int nfc_dev_up(struct nfc_dev *dev);
 
 int nfc_dev_down(struct nfc_dev *dev);
@@ -139,4 +147,7 @@ int nfc_deactivate_target(struct nfc_dev *dev, u32 target_idx);
 int nfc_data_exchange(struct nfc_dev *dev, u32 target_idx, struct sk_buff *skb,
                       data_exchange_cb_t cb, void *cb_context);
 
+int nfc_enable_se(struct nfc_dev *dev, u32 se_idx);
+int nfc_disable_se(struct nfc_dev *dev, u32 se_idx);
+
 #endif /* __LOCAL_NFC_H */
diff --git a/net/openvswitch/Kconfig b/net/openvswitch/Kconfig
index d9ea33c361be..27ee56b688a3 100644
--- a/net/openvswitch/Kconfig
+++ b/net/openvswitch/Kconfig
@@ -26,3 +26,17 @@ config OPENVSWITCH
           called openvswitch.
 
           If unsure, say N.
+
+config OPENVSWITCH_GRE
+        bool "Open vSwitch GRE tunneling support"
+        depends on INET
+        depends on OPENVSWITCH
+        depends on NET_IPGRE_DEMUX && !(OPENVSWITCH=y && NET_IPGRE_DEMUX=m)
+        default y
+        ---help---
+          If you say Y here, then the Open vSwitch will be able create GRE
+          vport.
+
+          Say N to exclude this support and reduce the binary size.
+
+          If unsure, say Y.
diff --git a/net/openvswitch/Makefile b/net/openvswitch/Makefile
index 15e7384745c1..01bddb2991e3 100644
--- a/net/openvswitch/Makefile
+++ b/net/openvswitch/Makefile
@@ -10,5 +10,6 @@ openvswitch-y := \
         dp_notify.o \
         flow.o \
         vport.o \
+        vport-gre.o \
         vport-internal_dev.o \
-        vport-netdev.o \
+        vport-netdev.o
diff --git a/net/openvswitch/actions.c b/net/openvswitch/actions.c
index 894b6cbdd929..22c5f399f1cf 100644
--- a/net/openvswitch/actions.c
+++ b/net/openvswitch/actions.c
@@ -130,9 +130,13 @@ static int set_eth_addr(struct sk_buff *skb,
         if (unlikely(err))
                 return err;
 
+        skb_postpull_rcsum(skb, eth_hdr(skb), ETH_ALEN * 2);
+
         memcpy(eth_hdr(skb)->h_source, eth_key->eth_src, ETH_ALEN);
         memcpy(eth_hdr(skb)->h_dest, eth_key->eth_dst, ETH_ALEN);
 
+        ovs_skb_postpush_rcsum(skb, eth_hdr(skb), ETH_ALEN * 2);
+
         return 0;
 }
 
@@ -432,6 +436,10 @@ static int execute_set_action(struct sk_buff *skb,
                 skb->mark = nla_get_u32(nested_attr);
                 break;
 
+        case OVS_KEY_ATTR_IPV4_TUNNEL:
+                OVS_CB(skb)->tun_key = nla_data(nested_attr);
+                break;
+
         case OVS_KEY_ATTR_ETHERNET:
                 err = set_eth_addr(skb, nla_data(nested_attr));
                 break;
diff --git a/net/openvswitch/datapath.c b/net/openvswitch/datapath.c
index d12d6b8b5e8b..f7e3a0d84c40 100644
--- a/net/openvswitch/datapath.c
+++ b/net/openvswitch/datapath.c
@@ -362,6 +362,14 @@ static int queue_gso_packets(struct net *net, int dp_ifindex,
 static size_t key_attr_size(void)
 {
         return    nla_total_size(4)   /* OVS_KEY_ATTR_PRIORITY */
+                + nla_total_size(0)   /* OVS_KEY_ATTR_TUNNEL */
+                  + nla_total_size(8)   /* OVS_TUNNEL_KEY_ATTR_ID */
+                  + nla_total_size(4)   /* OVS_TUNNEL_KEY_ATTR_IPV4_SRC */
+                  + nla_total_size(4)   /* OVS_TUNNEL_KEY_ATTR_IPV4_DST */
+                  + nla_total_size(1)   /* OVS_TUNNEL_KEY_ATTR_TOS */
+                  + nla_total_size(1)   /* OVS_TUNNEL_KEY_ATTR_TTL */
+                  + nla_total_size(0)   /* OVS_TUNNEL_KEY_ATTR_DONT_FRAGMENT */
+                  + nla_total_size(0)   /* OVS_TUNNEL_KEY_ATTR_CSUM */
                 + nla_total_size(4)   /* OVS_KEY_ATTR_IN_PORT */
                 + nla_total_size(4)   /* OVS_KEY_ATTR_SKB_MARK */
                 + nla_total_size(12)  /* OVS_KEY_ATTR_ETHERNET */
@@ -464,16 +472,89 @@ static int flush_flows(struct datapath *dp)
         return 0;
 }
 
-static int validate_actions(const struct nlattr *attr,
-                                const struct sw_flow_key *key, int depth);
+static struct nlattr *reserve_sfa_size(struct sw_flow_actions **sfa, int attr_len)
+{
+
+        struct sw_flow_actions *acts;
+        int new_acts_size;
+        int req_size = NLA_ALIGN(attr_len);
+        int next_offset = offsetof(struct sw_flow_actions, actions) +
+                                        (*sfa)->actions_len;
+
+        if (req_size <= (ksize(*sfa) - next_offset))
+                goto out;
+
+        new_acts_size = ksize(*sfa) * 2;
+
+        if (new_acts_size > MAX_ACTIONS_BUFSIZE) {
+                if ((MAX_ACTIONS_BUFSIZE - next_offset) < req_size)
+                        return ERR_PTR(-EMSGSIZE);
+                new_acts_size = MAX_ACTIONS_BUFSIZE;
+        }
+
+        acts = ovs_flow_actions_alloc(new_acts_size);
+        if (IS_ERR(acts))
+                return (void *)acts;
+
+        memcpy(acts->actions, (*sfa)->actions, (*sfa)->actions_len);
+        acts->actions_len = (*sfa)->actions_len;
+        kfree(*sfa);
+        *sfa = acts;
+
+out:
+        (*sfa)->actions_len += req_size;
+        return  (struct nlattr *) ((unsigned char *)(*sfa) + next_offset);
+}
+
+static int add_action(struct sw_flow_actions **sfa, int attrtype, void *data, int len)
+{
+        struct nlattr *a;
+
+        a = reserve_sfa_size(sfa, nla_attr_size(len));
+        if (IS_ERR(a))
+                return PTR_ERR(a);
+
+        a->nla_type = attrtype;
+        a->nla_len = nla_attr_size(len);
+
+        if (data)
+                memcpy(nla_data(a), data, len);
+        memset((unsigned char *) a + a->nla_len, 0, nla_padlen(len));
+
+        return 0;
+}
+
+static inline int add_nested_action_start(struct sw_flow_actions **sfa, int attrtype)
+{
+        int used = (*sfa)->actions_len;
+        int err;
+
+        err = add_action(sfa, attrtype, NULL, 0);
+        if (err)
+                return err;
+
+        return used;
+}
 
-static int validate_sample(const struct nlattr *attr,
-                                const struct sw_flow_key *key, int depth)
+static inline void add_nested_action_end(struct sw_flow_actions *sfa, int st_offset)
+{
+        struct nlattr *a = (struct nlattr *) ((unsigned char *)sfa->actions + st_offset);
+
+        a->nla_len = sfa->actions_len - st_offset;
+}
+
+static int validate_and_copy_actions(const struct nlattr *attr,
+                                     const struct sw_flow_key *key, int depth,
+                                     struct sw_flow_actions **sfa);
+
+static int validate_and_copy_sample(const struct nlattr *attr,
+                                    const struct sw_flow_key *key, int depth,
+                                    struct sw_flow_actions **sfa)
 {
         const struct nlattr *attrs[OVS_SAMPLE_ATTR_MAX + 1];
         const struct nlattr *probability, *actions;
         const struct nlattr *a;
-        int rem;
+        int rem, start, err, st_acts;
 
         memset(attrs, 0, sizeof(attrs));
         nla_for_each_nested(a, attr, rem) {
@@ -492,7 +573,26 @@ static int validate_sample(const struct nlattr *attr,
         actions = attrs[OVS_SAMPLE_ATTR_ACTIONS];
         if (!actions || (nla_len(actions) && nla_len(actions) < NLA_HDRLEN))
                 return -EINVAL;
-        return validate_actions(actions, key, depth + 1);
+
+        /* validation done, copy sample action. */
+        start = add_nested_action_start(sfa, OVS_ACTION_ATTR_SAMPLE);
+        if (start < 0)
+                return start;
+        err = add_action(sfa, OVS_SAMPLE_ATTR_PROBABILITY, nla_data(probability), sizeof(u32));
+        if (err)
+                return err;
+        st_acts = add_nested_action_start(sfa, OVS_SAMPLE_ATTR_ACTIONS);
+        if (st_acts < 0)
+                return st_acts;
+
+        err = validate_and_copy_actions(actions, key, depth + 1, sfa);
+        if (err)
+                return err;
+
+        add_nested_action_end(*sfa, st_acts);
+        add_nested_action_end(*sfa, start);
+
+        return 0;
 }
 
 static int validate_tp_port(const struct sw_flow_key *flow_key)
@@ -508,8 +608,30 @@ static int validate_tp_port(const struct sw_flow_key *flow_key)
         return -EINVAL;
 }
 
+static int validate_and_copy_set_tun(const struct nlattr *attr,
+                                     struct sw_flow_actions **sfa)
+{
+        struct ovs_key_ipv4_tunnel tun_key;
+        int err, start;
+
+        err = ovs_ipv4_tun_from_nlattr(nla_data(attr), &tun_key);
+        if (err)
+                return err;
+
+        start = add_nested_action_start(sfa, OVS_ACTION_ATTR_SET);
+        if (start < 0)
+                return start;
+
+        err = add_action(sfa, OVS_KEY_ATTR_IPV4_TUNNEL, &tun_key, sizeof(tun_key));
+        add_nested_action_end(*sfa, start);
+
+        return err;
+}
+
 static int validate_set(const struct nlattr *a,
-                        const struct sw_flow_key *flow_key)
+                        const struct sw_flow_key *flow_key,
+                        struct sw_flow_actions **sfa,
+                        bool *set_tun)
 {
         const struct nlattr *ovs_key = nla_data(a);
         int key_type = nla_type(ovs_key);
@@ -519,18 +641,27 @@ static int validate_set(const struct nlattr *a,
                 return -EINVAL;
 
         if (key_type > OVS_KEY_ATTR_MAX ||
-            nla_len(ovs_key) != ovs_key_lens[key_type])
+           (ovs_key_lens[key_type] != nla_len(ovs_key) &&
+            ovs_key_lens[key_type] != -1))
                 return -EINVAL;
 
         switch (key_type) {
         const struct ovs_key_ipv4 *ipv4_key;
         const struct ovs_key_ipv6 *ipv6_key;
+        int err;
 
         case OVS_KEY_ATTR_PRIORITY:
         case OVS_KEY_ATTR_SKB_MARK:
         case OVS_KEY_ATTR_ETHERNET:
                 break;
 
+        case OVS_KEY_ATTR_TUNNEL:
+                *set_tun = true;
+                err = validate_and_copy_set_tun(a, sfa);
+                if (err)
+                        return err;
+                break;
+
         case OVS_KEY_ATTR_IPV4:
                 if (flow_key->eth.type != htons(ETH_P_IP))
                         return -EINVAL;
@@ -606,8 +737,24 @@ static int validate_userspace(const struct nlattr *attr)
         return 0;
 }
 
-static int validate_actions(const struct nlattr *attr,
-                                const struct sw_flow_key *key,  int depth)
+static int copy_action(const struct nlattr *from,
+                       struct sw_flow_actions **sfa)
+{
+        int totlen = NLA_ALIGN(from->nla_len);
+        struct nlattr *to;
+
+        to = reserve_sfa_size(sfa, from->nla_len);
+        if (IS_ERR(to))
+                return PTR_ERR(to);
+
+        memcpy(to, from, totlen);
+        return 0;
+}
+
+static int validate_and_copy_actions(const struct nlattr *attr,
+                                     const struct sw_flow_key *key,
+                                     int depth,
+                                     struct sw_flow_actions **sfa)
 {
         const struct nlattr *a;
         int rem, err;
@@ -627,12 +774,14 @@ static int validate_actions(const struct nlattr *attr,
                 };
                 const struct ovs_action_push_vlan *vlan;
                 int type = nla_type(a);
+                bool skip_copy;
 
                 if (type > OVS_ACTION_ATTR_MAX ||
                     (action_lens[type] != nla_len(a) &&
                      action_lens[type] != (u32)-1))
                         return -EINVAL;
 
+                skip_copy = false;
                 switch (type) {
                 case OVS_ACTION_ATTR_UNSPEC:
                         return -EINVAL;
@@ -661,20 +810,26 @@ static int validate_actions(const struct nlattr *attr,
                         break;
 
                 case OVS_ACTION_ATTR_SET:
-                        err = validate_set(a, key);
+                        err = validate_set(a, key, sfa, &skip_copy);
                         if (err)
                                 return err;
                         break;
 
                 case OVS_ACTION_ATTR_SAMPLE:
-                        err = validate_sample(a, key, depth);
+                        err = validate_and_copy_sample(a, key, depth, sfa);
                         if (err)
                                 return err;
+                        skip_copy = true;
                         break;
 
                 default:
                         return -EINVAL;
                 }
+                if (!skip_copy) {
+                        err = copy_action(a, sfa);
+                        if (err)
+                                return err;
+                }
         }
 
         if (rem > 0)
@@ -739,24 +894,18 @@ static int ovs_packet_cmd_execute(struct sk_buff *skb, struct genl_info *info)
         if (err)
                 goto err_flow_free;
 
-        err = ovs_flow_metadata_from_nlattrs(&flow->key.phy.priority,
-                                             &flow->key.phy.skb_mark,
-                                             &flow->key.phy.in_port,
-                                             a[OVS_PACKET_ATTR_KEY]);
-        if (err)
-                goto err_flow_free;
-
-        err = validate_actions(a[OVS_PACKET_ATTR_ACTIONS], &flow->key, 0);
+        err = ovs_flow_metadata_from_nlattrs(flow, key_len, a[OVS_PACKET_ATTR_KEY]);
         if (err)
                 goto err_flow_free;
-
-        flow->hash = ovs_flow_hash(&flow->key, key_len);
-
-        acts = ovs_flow_actions_alloc(a[OVS_PACKET_ATTR_ACTIONS]);
+        acts = ovs_flow_actions_alloc(nla_len(a[OVS_PACKET_ATTR_ACTIONS]));
         err = PTR_ERR(acts);
         if (IS_ERR(acts))
                 goto err_flow_free;
+
+        err = validate_and_copy_actions(a[OVS_PACKET_ATTR_ACTIONS], &flow->key, 0, &acts);
         rcu_assign_pointer(flow->sf_acts, acts);
+        if (err)
+                goto err_flow_free;
 
         OVS_CB(packet)->flow = flow;
         packet->priority = flow->key.phy.priority;
@@ -846,6 +995,99 @@ static struct genl_multicast_group ovs_dp_flow_multicast_group = {
         .name = OVS_FLOW_MCGROUP
 };
 
+static int actions_to_attr(const struct nlattr *attr, int len, struct sk_buff *skb);
+static int sample_action_to_attr(const struct nlattr *attr, struct sk_buff *skb)
+{
+        const struct nlattr *a;
+        struct nlattr *start;
+        int err = 0, rem;
+
+        start = nla_nest_start(skb, OVS_ACTION_ATTR_SAMPLE);
+        if (!start)
+                return -EMSGSIZE;
+
+        nla_for_each_nested(a, attr, rem) {
+                int type = nla_type(a);
+                struct nlattr *st_sample;
+
+                switch (type) {
+                case OVS_SAMPLE_ATTR_PROBABILITY:
+                        if (nla_put(skb, OVS_SAMPLE_ATTR_PROBABILITY, sizeof(u32), nla_data(a)))
+                                return -EMSGSIZE;
+                        break;
+                case OVS_SAMPLE_ATTR_ACTIONS:
+                        st_sample = nla_nest_start(skb, OVS_SAMPLE_ATTR_ACTIONS);
+                        if (!st_sample)
+                                return -EMSGSIZE;
+                        err = actions_to_attr(nla_data(a), nla_len(a), skb);
+                        if (err)
+                                return err;
+                        nla_nest_end(skb, st_sample);
+                        break;
+                }
+        }
+
+        nla_nest_end(skb, start);
+        return err;
+}
+
+static int set_action_to_attr(const struct nlattr *a, struct sk_buff *skb)
+{
+        const struct nlattr *ovs_key = nla_data(a);
+        int key_type = nla_type(ovs_key);
+        struct nlattr *start;
+        int err;
+
+        switch (key_type) {
+        case OVS_KEY_ATTR_IPV4_TUNNEL:
+                start = nla_nest_start(skb, OVS_ACTION_ATTR_SET);
+                if (!start)
+                        return -EMSGSIZE;
+
+                err = ovs_ipv4_tun_to_nlattr(skb, nla_data(ovs_key));
+                if (err)
+                        return err;
+                nla_nest_end(skb, start);
+                break;
+        default:
+                if (nla_put(skb, OVS_ACTION_ATTR_SET, nla_len(a), ovs_key))
+                        return -EMSGSIZE;
+                break;
+        }
+
+        return 0;
+}
+
+static int actions_to_attr(const struct nlattr *attr, int len, struct sk_buff *skb)
+{
+        const struct nlattr *a;
+        int rem, err;
+
+        nla_for_each_attr(a, attr, len, rem) {
+                int type = nla_type(a);
+
+                switch (type) {
+                case OVS_ACTION_ATTR_SET:
+                        err = set_action_to_attr(a, skb);
+                        if (err)
+                                return err;
+                        break;
+
+                case OVS_ACTION_ATTR_SAMPLE:
+                        err = sample_action_to_attr(a, skb);
+                        if (err)
+                                return err;
+                        break;
+                default:
+                        if (nla_put(skb, type, nla_len(a), nla_data(a)))
+                                return -EMSGSIZE;
+                        break;
+                }
+        }
+
+        return 0;
+}
+
 static size_t ovs_flow_cmd_msg_size(const struct sw_flow_actions *acts)
 {
         return NLMSG_ALIGN(sizeof(struct ovs_header))
@@ -863,6 +1105,7 @@ static int ovs_flow_cmd_fill_info(struct sw_flow *flow, struct datapath *dp,
 {
         const int skb_orig_len = skb->len;
         const struct sw_flow_actions *sf_acts;
+        struct nlattr *start;
         struct ovs_flow_stats stats;
         struct ovs_header *ovs_header;
         struct nlattr *nla;
@@ -916,10 +1159,19 @@ static int ovs_flow_cmd_fill_info(struct sw_flow *flow, struct datapath *dp,
          * This can only fail for dump operations because the skb is always
          * properly sized for single flows.
          */
-        err = nla_put(skb, OVS_FLOW_ATTR_ACTIONS, sf_acts->actions_len,
-                      sf_acts->actions);
-        if (err < 0 && skb_orig_len)
-                goto error;
+        start = nla_nest_start(skb, OVS_FLOW_ATTR_ACTIONS);
+        if (start) {
+                err = actions_to_attr(sf_acts->actions, sf_acts->actions_len, skb);
+                if (!err)
+                        nla_nest_end(skb, start);
+                else {
+                        if (skb_orig_len)
+                                goto error;
+
+                        nla_nest_cancel(skb, start);
+                }
+        } else if (skb_orig_len)
+                goto nla_put_failure;
 
         return genlmsg_end(skb, ovs_header);
 
@@ -964,6 +1216,7 @@ static int ovs_flow_cmd_new_or_set(struct sk_buff *skb, struct genl_info *info)
         struct sk_buff *reply;
         struct datapath *dp;
         struct flow_table *table;
+        struct sw_flow_actions *acts = NULL;
         int error;
         int key_len;
 
@@ -977,9 +1230,14 @@ static int ovs_flow_cmd_new_or_set(struct sk_buff *skb, struct genl_info *info)
 
         /* Validate actions. */
         if (a[OVS_FLOW_ATTR_ACTIONS]) {
-                error = validate_actions(a[OVS_FLOW_ATTR_ACTIONS], &key,  0);
-                if (error)
+                acts = ovs_flow_actions_alloc(nla_len(a[OVS_FLOW_ATTR_ACTIONS]));
+                error = PTR_ERR(acts);
+                if (IS_ERR(acts))
                         goto error;
+
+                error = validate_and_copy_actions(a[OVS_FLOW_ATTR_ACTIONS], &key,  0, &acts);
+                if (error)
+                        goto err_kfree;
         } else if (info->genlhdr->cmd == OVS_FLOW_CMD_NEW) {
                 error = -EINVAL;
                 goto error;
@@ -994,8 +1252,6 @@ static int ovs_flow_cmd_new_or_set(struct sk_buff *skb, struct genl_info *info)
         table = ovsl_dereference(dp->table);
         flow = ovs_flow_tbl_lookup(table, &key, key_len);
         if (!flow) {
-                struct sw_flow_actions *acts;
-
                 /* Bail out if we're not allowed to create a new flow. */
                 error = -ENOENT;
                 if (info->genlhdr->cmd == OVS_FLOW_CMD_SET)
@@ -1019,19 +1275,12 @@ static int ovs_flow_cmd_new_or_set(struct sk_buff *skb, struct genl_info *info)
                         error = PTR_ERR(flow);
                         goto err_unlock_ovs;
                 }
-                flow->key = key;
                 clear_stats(flow);
 
-                /* Obtain actions. */
-                acts = ovs_flow_actions_alloc(a[OVS_FLOW_ATTR_ACTIONS]);
-                error = PTR_ERR(acts);
-                if (IS_ERR(acts))
-                        goto error_free_flow;
                 rcu_assign_pointer(flow->sf_acts, acts);
 
                 /* Put flow in bucket. */
-                flow->hash = ovs_flow_hash(&key, key_len);
-                ovs_flow_tbl_insert(table, flow);
+                ovs_flow_tbl_insert(table, flow, &key, key_len);
 
                 reply = ovs_flow_cmd_build_info(flow, dp, info->snd_portid,
                                                 info->snd_seq,
@@ -1039,7 +1288,6 @@ static int ovs_flow_cmd_new_or_set(struct sk_buff *skb, struct genl_info *info)
         } else {
                 /* We found a matching flow. */
                 struct sw_flow_actions *old_acts;
-                struct nlattr *acts_attrs;
 
                 /* Bail out if we're not allowed to modify an existing flow.
                  * We accept NLM_F_CREATE in place of the intended NLM_F_EXCL
@@ -1054,21 +1302,8 @@ static int ovs_flow_cmd_new_or_set(struct sk_buff *skb, struct genl_info *info)
 
                 /* Update actions. */
                 old_acts = ovsl_dereference(flow->sf_acts);
-                acts_attrs = a[OVS_FLOW_ATTR_ACTIONS];
-                if (acts_attrs &&
-                   (old_acts->actions_len != nla_len(acts_attrs) ||
-                   memcmp(old_acts->actions, nla_data(acts_attrs),
-                          old_acts->actions_len))) {
-                        struct sw_flow_actions *new_acts;
-
-                        new_acts = ovs_flow_actions_alloc(acts_attrs);
-                        error = PTR_ERR(new_acts);
-                        if (IS_ERR(new_acts))
-                                goto err_unlock_ovs;
-
-                        rcu_assign_pointer(flow->sf_acts, new_acts);
-                        ovs_flow_deferred_free_acts(old_acts);
-                }
+                rcu_assign_pointer(flow->sf_acts, acts);
+                ovs_flow_deferred_free_acts(old_acts);
 
                 reply = ovs_flow_cmd_build_info(flow, dp, info->snd_portid,
                                                info->snd_seq, OVS_FLOW_CMD_NEW);
@@ -1089,10 +1324,10 @@ static int ovs_flow_cmd_new_or_set(struct sk_buff *skb, struct genl_info *info)
                                 ovs_dp_flow_multicast_group.id, PTR_ERR(reply));
         return 0;
 
-error_free_flow:
-        ovs_flow_free(flow);
 err_unlock_ovs:
         ovs_unlock();
+err_kfree:
+        kfree(acts);
 error:
         return error;
 }
@@ -1812,10 +2047,11 @@ static int ovs_vport_cmd_set(struct sk_buff *skb, struct genl_info *info)
         if (IS_ERR(vport))
                 goto exit_unlock;
 
-        err = 0;
         if (a[OVS_VPORT_ATTR_TYPE] &&
-            nla_get_u32(a[OVS_VPORT_ATTR_TYPE]) != vport->ops->type)
+            nla_get_u32(a[OVS_VPORT_ATTR_TYPE]) != vport->ops->type) {
                 err = -EINVAL;
+                goto exit_unlock;
+        }
 
         reply = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
         if (!reply) {
@@ -1823,10 +2059,11 @@ static int ovs_vport_cmd_set(struct sk_buff *skb, struct genl_info *info)
                 goto exit_unlock;
         }
 
-        if (!err && a[OVS_VPORT_ATTR_OPTIONS])
+        if (a[OVS_VPORT_ATTR_OPTIONS]) {
                 err = ovs_vport_set_options(vport, a[OVS_VPORT_ATTR_OPTIONS]);
-        if (err)
-                goto exit_free;
+                if (err)
+                        goto exit_free;
+        }
 
         if (a[OVS_VPORT_ATTR_UPCALL_PID])
                 vport->upcall_portid = nla_get_u32(a[OVS_VPORT_ATTR_UPCALL_PID]);
@@ -1867,8 +2104,8 @@ static int ovs_vport_cmd_del(struct sk_buff *skb, struct genl_info *info)
                 goto exit_unlock;
         }
 
-        reply = ovs_vport_cmd_build_info(vport, info->snd_portid, info->snd_seq,
-                                         OVS_VPORT_CMD_DEL);
+        reply = ovs_vport_cmd_build_info(vport, info->snd_portid,
+                                         info->snd_seq, OVS_VPORT_CMD_DEL);
         err = PTR_ERR(reply);
         if (IS_ERR(reply))
                 goto exit_unlock;
@@ -1897,8 +2134,8 @@ static int ovs_vport_cmd_get(struct sk_buff *skb, struct genl_info *info)
         if (IS_ERR(vport))
                 goto exit_unlock;
 
-        reply = ovs_vport_cmd_build_info(vport, info->snd_portid, info->snd_seq,
-                                         OVS_VPORT_CMD_NEW);
+        reply = ovs_vport_cmd_build_info(vport, info->snd_portid,
+                                         info->snd_seq, OVS_VPORT_CMD_NEW);
         err = PTR_ERR(reply);
         if (IS_ERR(reply))
                 goto exit_unlock;
diff --git a/net/openvswitch/datapath.h b/net/openvswitch/datapath.h
index 16b840695216..a91486484916 100644
--- a/net/openvswitch/datapath.h
+++ b/net/openvswitch/datapath.h
@@ -88,9 +88,12 @@ struct datapath {
 /**
  * struct ovs_skb_cb - OVS data in skb CB
  * @flow: The flow associated with this packet.  May be %NULL if no flow.
+ * @tun_key: Key for the tunnel that encapsulated this packet. NULL if the
+ * packet is not being tunneled.
  */
 struct ovs_skb_cb {
         struct sw_flow          *flow;
+        struct ovs_key_ipv4_tunnel  *tun_key;
 };
 #define OVS_CB(skb) ((struct ovs_skb_cb *)(skb)->cb)
 
@@ -119,6 +122,7 @@ struct dp_upcall_info {
 struct ovs_net {
         struct list_head dps;
         struct work_struct dp_notify_work;
+        struct vport_net vport_net;
 };
 
 extern int ovs_net_id;
diff --git a/net/openvswitch/dp_notify.c b/net/openvswitch/dp_notify.c
index ef4feec6cd84..c3235675f359 100644
--- a/net/openvswitch/dp_notify.c
+++ b/net/openvswitch/dp_notify.c
@@ -78,7 +78,7 @@ static int dp_device_event(struct notifier_block *unused, unsigned long event,
                            void *ptr)
 {
         struct ovs_net *ovs_net;
-        struct net_device *dev = ptr;
+        struct net_device *dev = netdev_notifier_info_to_dev(ptr);
         struct vport *vport = NULL;
 
         if (!ovs_is_internal_dev(dev))
diff --git a/net/openvswitch/flow.c b/net/openvswitch/flow.c
index b15321a2228c..5c519b121e1b 100644
--- a/net/openvswitch/flow.c
+++ b/net/openvswitch/flow.c
@@ -40,6 +40,7 @@
 #include <linux/icmpv6.h>
 #include <linux/rculist.h>
 #include <net/ip.h>
+#include <net/ip_tunnels.h>
 #include <net/ipv6.h>
 #include <net/ndisc.h>
 
@@ -198,20 +199,18 @@ void ovs_flow_used(struct sw_flow *flow, struct sk_buff *skb)
         spin_unlock(&flow->lock);
 }
 
-struct sw_flow_actions *ovs_flow_actions_alloc(const struct nlattr *actions)
+struct sw_flow_actions *ovs_flow_actions_alloc(int size)
 {
-        int actions_len = nla_len(actions);
         struct sw_flow_actions *sfa;
 
-        if (actions_len > MAX_ACTIONS_BUFSIZE)
+        if (size > MAX_ACTIONS_BUFSIZE)
                 return ERR_PTR(-EINVAL);
 
-        sfa = kmalloc(sizeof(*sfa) + actions_len, GFP_KERNEL);
+        sfa = kmalloc(sizeof(*sfa) + size, GFP_KERNEL);
         if (!sfa)
                 return ERR_PTR(-ENOMEM);
 
-        sfa->actions_len = actions_len;
-        nla_memcpy(sfa->actions, actions, actions_len);
+        sfa->actions_len = 0;
         return sfa;
 }
 
@@ -354,6 +353,14 @@ struct sw_flow *ovs_flow_tbl_next(struct flow_table *table, u32 *bucket, u32 *la
         return NULL;
 }
 
+static void __flow_tbl_insert(struct flow_table *table, struct sw_flow *flow)
+{
+        struct hlist_head *head;
+        head = find_bucket(table, flow->hash);
+        hlist_add_head_rcu(&flow->hash_node[table->node_ver], head);
+        table->count++;
+}
+
 static void flow_table_copy_flows(struct flow_table *old, struct flow_table *new)
 {
         int old_ver;
@@ -370,7 +377,7 @@ static void flow_table_copy_flows(struct flow_table *old, struct flow_table *new
                 head = flex_array_get(old->buckets, i);
 
                 hlist_for_each_entry(flow, head, hash_node[old_ver])
-                        ovs_flow_tbl_insert(new, flow);
+                        __flow_tbl_insert(new, flow);
         }
         old->keep_flows = true;
 }
@@ -590,10 +597,10 @@ out:
  *    - skb->network_header: just past the Ethernet header, or just past the
  *      VLAN header, to the first byte of the Ethernet payload.
  *
- *    - skb->transport_header: If key->dl_type is ETH_P_IP or ETH_P_IPV6
+ *    - skb->transport_header: If key->eth.type is ETH_P_IP or ETH_P_IPV6
  *      on output, then just past the IP header, if one is present and
  *      of a correct length, otherwise the same as skb->network_header.
- *      For other key->dl_type values it is left untouched.
+ *      For other key->eth.type values it is left untouched.
  */
 int ovs_flow_extract(struct sk_buff *skb, u16 in_port, struct sw_flow_key *key,
                  int *key_lenp)
@@ -605,6 +612,8 @@ int ovs_flow_extract(struct sk_buff *skb, u16 in_port, struct sw_flow_key *key,
         memset(key, 0, sizeof(*key));
 
         key->phy.priority = skb->priority;
+        if (OVS_CB(skb)->tun_key)
+                memcpy(&key->tun_key, OVS_CB(skb)->tun_key, sizeof(key->tun_key));
         key->phy.in_port = in_port;
         key->phy.skb_mark = skb->mark;
 
@@ -618,6 +627,9 @@ int ovs_flow_extract(struct sk_buff *skb, u16 in_port, struct sw_flow_key *key,
         memcpy(key->eth.dst, eth->h_dest, ETH_ALEN);
 
         __skb_pull(skb, 2 * ETH_ALEN);
+        /* We are going to push all headers that we pull, so no need to
+         * update skb->csum here.
+         */
 
         if (vlan_tx_tag_present(skb))
                 key->eth.tci = htons(skb->vlan_tci);
@@ -759,9 +771,18 @@ out:
         return error;
 }
 
-u32 ovs_flow_hash(const struct sw_flow_key *key, int key_len)
+static u32 ovs_flow_hash(const struct sw_flow_key *key, int key_start, int key_len)
+{
+        return jhash2((u32 *)((u8 *)key + key_start),
+                      DIV_ROUND_UP(key_len - key_start, sizeof(u32)), 0);
+}
+
+static int flow_key_start(struct sw_flow_key *key)
 {
-        return jhash2((u32 *)key, DIV_ROUND_UP(key_len, sizeof(u32)), 0);
+        if (key->tun_key.ipv4_dst)
+                return 0;
+        else
+                return offsetof(struct sw_flow_key, phy);
 }
 
 struct sw_flow *ovs_flow_tbl_lookup(struct flow_table *table,
@@ -769,28 +790,31 @@ struct sw_flow *ovs_flow_tbl_lookup(struct flow_table *table,
 {
         struct sw_flow *flow;
         struct hlist_head *head;
+        u8 *_key;
+        int key_start;
         u32 hash;
 
-        hash = ovs_flow_hash(key, key_len);
+        key_start = flow_key_start(key);
+        hash = ovs_flow_hash(key, key_start, key_len);
 
+        _key = (u8 *) key + key_start;
         head = find_bucket(table, hash);
         hlist_for_each_entry_rcu(flow, head, hash_node[table->node_ver]) {
 
                 if (flow->hash == hash &&
-                    !memcmp(&flow->key, key, key_len)) {
+                    !memcmp((u8 *)&flow->key + key_start, _key, key_len - key_start)) {
                         return flow;
                 }
         }
         return NULL;
 }
 
-void ovs_flow_tbl_insert(struct flow_table *table, struct sw_flow *flow)
+void ovs_flow_tbl_insert(struct flow_table *table, struct sw_flow *flow,
+                         struct sw_flow_key *key, int key_len)
 {
-        struct hlist_head *head;
-
-        head = find_bucket(table, flow->hash);
-        hlist_add_head_rcu(&flow->hash_node[table->node_ver], head);
-        table->count++;
+        flow->hash = ovs_flow_hash(key, flow_key_start(key), key_len);
+        memcpy(&flow->key, key, sizeof(flow->key));
+        __flow_tbl_insert(table, flow);
 }
 
 void ovs_flow_tbl_remove(struct flow_table *table, struct sw_flow *flow)
@@ -817,6 +841,7 @@ const int ovs_key_lens[OVS_KEY_ATTR_MAX + 1] = {
         [OVS_KEY_ATTR_ICMPV6] = sizeof(struct ovs_key_icmpv6),
         [OVS_KEY_ATTR_ARP] = sizeof(struct ovs_key_arp),
         [OVS_KEY_ATTR_ND] = sizeof(struct ovs_key_nd),
+        [OVS_KEY_ATTR_TUNNEL] = -1,
 };
 
 static int ipv4_flow_from_nlattrs(struct sw_flow_key *swkey, int *key_len,
@@ -954,6 +979,105 @@ static int parse_flow_nlattrs(const struct nlattr *attr,
         return 0;
 }
 
+int ovs_ipv4_tun_from_nlattr(const struct nlattr *attr,
+                             struct ovs_key_ipv4_tunnel *tun_key)
+{
+        struct nlattr *a;
+        int rem;
+        bool ttl = false;
+
+        memset(tun_key, 0, sizeof(*tun_key));
+
+        nla_for_each_nested(a, attr, rem) {
+                int type = nla_type(a);
+                static const u32 ovs_tunnel_key_lens[OVS_TUNNEL_KEY_ATTR_MAX + 1] = {
+                        [OVS_TUNNEL_KEY_ATTR_ID] = sizeof(u64),
+                        [OVS_TUNNEL_KEY_ATTR_IPV4_SRC] = sizeof(u32),
+                        [OVS_TUNNEL_KEY_ATTR_IPV4_DST] = sizeof(u32),
+                        [OVS_TUNNEL_KEY_ATTR_TOS] = 1,
+                        [OVS_TUNNEL_KEY_ATTR_TTL] = 1,
+                        [OVS_TUNNEL_KEY_ATTR_DONT_FRAGMENT] = 0,
+                        [OVS_TUNNEL_KEY_ATTR_CSUM] = 0,
+                };
+
+                if (type > OVS_TUNNEL_KEY_ATTR_MAX ||
+                        ovs_tunnel_key_lens[type] != nla_len(a))
+                        return -EINVAL;
+
+                switch (type) {
+                case OVS_TUNNEL_KEY_ATTR_ID:
+                        tun_key->tun_id = nla_get_be64(a);
+                        tun_key->tun_flags |= TUNNEL_KEY;
+                        break;
+                case OVS_TUNNEL_KEY_ATTR_IPV4_SRC:
+                        tun_key->ipv4_src = nla_get_be32(a);
+                        break;
+                case OVS_TUNNEL_KEY_ATTR_IPV4_DST:
+                        tun_key->ipv4_dst = nla_get_be32(a);
+                        break;
+                case OVS_TUNNEL_KEY_ATTR_TOS:
+                        tun_key->ipv4_tos = nla_get_u8(a);
+                        break;
+                case OVS_TUNNEL_KEY_ATTR_TTL:
+                        tun_key->ipv4_ttl = nla_get_u8(a);
+                        ttl = true;
+                        break;
+                case OVS_TUNNEL_KEY_ATTR_DONT_FRAGMENT:
+                        tun_key->tun_flags |= TUNNEL_DONT_FRAGMENT;
+                        break;
+                case OVS_TUNNEL_KEY_ATTR_CSUM:
+                        tun_key->tun_flags |= TUNNEL_CSUM;
+                        break;
+                default:
+                        return -EINVAL;
+
+                }
+        }
+        if (rem > 0)
+                return -EINVAL;
+
+        if (!tun_key->ipv4_dst)
+                return -EINVAL;
+
+        if (!ttl)
+                return -EINVAL;
+
+        return 0;
+}
+
+int ovs_ipv4_tun_to_nlattr(struct sk_buff *skb,
+                           const struct ovs_key_ipv4_tunnel *tun_key)
+{
+        struct nlattr *nla;
+
+        nla = nla_nest_start(skb, OVS_KEY_ATTR_TUNNEL);
+        if (!nla)
+                return -EMSGSIZE;
+
+        if (tun_key->tun_flags & TUNNEL_KEY &&
+            nla_put_be64(skb, OVS_TUNNEL_KEY_ATTR_ID, tun_key->tun_id))
+                return -EMSGSIZE;
+        if (tun_key->ipv4_src &&
+            nla_put_be32(skb, OVS_TUNNEL_KEY_ATTR_IPV4_SRC, tun_key->ipv4_src))
+                return -EMSGSIZE;
+        if (nla_put_be32(skb, OVS_TUNNEL_KEY_ATTR_IPV4_DST, tun_key->ipv4_dst))
+                return -EMSGSIZE;
+        if (tun_key->ipv4_tos &&
+            nla_put_u8(skb, OVS_TUNNEL_KEY_ATTR_TOS, tun_key->ipv4_tos))
+                return -EMSGSIZE;
+        if (nla_put_u8(skb, OVS_TUNNEL_KEY_ATTR_TTL, tun_key->ipv4_ttl))
+                return -EMSGSIZE;
+        if ((tun_key->tun_flags & TUNNEL_DONT_FRAGMENT) &&
+                nla_put_flag(skb, OVS_TUNNEL_KEY_ATTR_DONT_FRAGMENT))
+                return -EMSGSIZE;
+        if ((tun_key->tun_flags & TUNNEL_CSUM) &&
+                nla_put_flag(skb, OVS_TUNNEL_KEY_ATTR_CSUM))
+                return -EMSGSIZE;
+
+        nla_nest_end(skb, nla);
+        return 0;
+}
+
 /**
  * ovs_flow_from_nlattrs - parses Netlink attributes into a flow key.
  * @swkey: receives the extracted flow key.
@@ -996,6 +1120,14 @@ int ovs_flow_from_nlattrs(struct sw_flow_key *swkey, int *key_lenp,
                 attrs &= ~(1 << OVS_KEY_ATTR_SKB_MARK);
         }
 
+        if (attrs & (1 << OVS_KEY_ATTR_TUNNEL)) {
+                err = ovs_ipv4_tun_from_nlattr(a[OVS_KEY_ATTR_TUNNEL], &swkey->tun_key);
+                if (err)
+                        return err;
+
+                attrs &= ~(1 << OVS_KEY_ATTR_TUNNEL);
+        }
+
         /* Data attributes. */
         if (!(attrs & (1 << OVS_KEY_ATTR_ETHERNET)))
                 return -EINVAL;
@@ -1122,10 +1254,9 @@ int ovs_flow_from_nlattrs(struct sw_flow_key *swkey, int *key_lenp,
 
 /**
  * ovs_flow_metadata_from_nlattrs - parses Netlink attributes into a flow key.
- * @priority: receives the skb priority
- * @mark: receives the skb mark
- * @in_port: receives the extracted input port.
- * @key: Netlink attribute holding nested %OVS_KEY_ATTR_* Netlink attribute
+ * @flow: Receives extracted in_port, priority, tun_key and skb_mark.
+ * @key_len: Length of key in @flow.  Used for calculating flow hash.
+ * @attr: Netlink attribute holding nested %OVS_KEY_ATTR_* Netlink attribute
  * sequence.
  *
  * This parses a series of Netlink attributes that form a flow key, which must
@@ -1133,42 +1264,56 @@ int ovs_flow_from_nlattrs(struct sw_flow_key *swkey, int *key_lenp,
  * get the metadata, that is, the parts of the flow key that cannot be
  * extracted from the packet itself.
  */
-int ovs_flow_metadata_from_nlattrs(u32 *priority, u32 *mark, u16 *in_port,
-                               const struct nlattr *attr)
+int ovs_flow_metadata_from_nlattrs(struct sw_flow *flow, int key_len,
+                                   const struct nlattr *attr)
 {
+        struct ovs_key_ipv4_tunnel *tun_key = &flow->key.tun_key;
         const struct nlattr *nla;
         int rem;
 
-        *in_port = DP_MAX_PORTS;
-        *priority = 0;
-        *mark = 0;
+        flow->key.phy.in_port = DP_MAX_PORTS;
+        flow->key.phy.priority = 0;
+        flow->key.phy.skb_mark = 0;
+        memset(tun_key, 0, sizeof(flow->key.tun_key));
 
         nla_for_each_nested(nla, attr, rem) {
                 int type = nla_type(nla);
 
                 if (type <= OVS_KEY_ATTR_MAX && ovs_key_lens[type] > 0) {
+                        int err;
+
                         if (nla_len(nla) != ovs_key_lens[type])
                                 return -EINVAL;
 
                         switch (type) {
                         case OVS_KEY_ATTR_PRIORITY:
-                                *priority = nla_get_u32(nla);
+                                flow->key.phy.priority = nla_get_u32(nla);
+                                break;
+
+                        case OVS_KEY_ATTR_TUNNEL:
+                                err = ovs_ipv4_tun_from_nlattr(nla, tun_key);
+                                if (err)
+                                        return err;
                                 break;
 
                         case OVS_KEY_ATTR_IN_PORT:
                                 if (nla_get_u32(nla) >= DP_MAX_PORTS)
                                         return -EINVAL;
-                                *in_port = nla_get_u32(nla);
+                                flow->key.phy.in_port = nla_get_u32(nla);
                                 break;
 
                         case OVS_KEY_ATTR_SKB_MARK:
-                                *mark = nla_get_u32(nla);
+                                flow->key.phy.skb_mark = nla_get_u32(nla);
                                 break;
                         }
                 }
         }
         if (rem)
                 return -EINVAL;
+
+        flow->hash = ovs_flow_hash(&flow->key,
+                                   flow_key_start(&flow->key), key_len);
+
         return 0;
 }
 
@@ -1181,6 +1326,10 @@ int ovs_flow_to_nlattrs(const struct sw_flow_key *swkey, struct sk_buff *skb)
             nla_put_u32(skb, OVS_KEY_ATTR_PRIORITY, swkey->phy.priority))
                 goto nla_put_failure;
 
+        if (swkey->tun_key.ipv4_dst &&
+            ovs_ipv4_tun_to_nlattr(skb, &swkey->tun_key))
+                goto nla_put_failure;
+
         if (swkey->phy.in_port != DP_MAX_PORTS &&
             nla_put_u32(skb, OVS_KEY_ATTR_IN_PORT, swkey->phy.in_port))
                 goto nla_put_failure;
diff --git a/net/openvswitch/flow.h b/net/openvswitch/flow.h
index 0875fde65b9c..66ef7220293e 100644
--- a/net/openvswitch/flow.h
+++ b/net/openvswitch/flow.h
@@ -40,7 +40,38 @@ struct sw_flow_actions {
         struct nlattr actions[];
 };
 
+/* Used to memset ovs_key_ipv4_tunnel padding. */
+#define OVS_TUNNEL_KEY_SIZE                                     \
+        (offsetof(struct ovs_key_ipv4_tunnel, ipv4_ttl) +       \
+        FIELD_SIZEOF(struct ovs_key_ipv4_tunnel, ipv4_ttl))
+
+struct ovs_key_ipv4_tunnel {
+        __be64 tun_id;
+        __be32 ipv4_src;
+        __be32 ipv4_dst;
+        __be16 tun_flags;
+        u8   ipv4_tos;
+        u8   ipv4_ttl;
+};
+
+static inline void ovs_flow_tun_key_init(struct ovs_key_ipv4_tunnel *tun_key,
+                                         const struct iphdr *iph, __be64 tun_id,
+                                         __be16 tun_flags)
+{
+        tun_key->tun_id = tun_id;
+        tun_key->ipv4_src = iph->saddr;
+        tun_key->ipv4_dst = iph->daddr;
+        tun_key->ipv4_tos = iph->tos;
+        tun_key->ipv4_ttl = iph->ttl;
+        tun_key->tun_flags = tun_flags;
+
+        /* clear struct padding. */
+        memset((unsigned char *) tun_key + OVS_TUNNEL_KEY_SIZE, 0,
+               sizeof(*tun_key) - OVS_TUNNEL_KEY_SIZE);
+}
+
 struct sw_flow_key {
+        struct ovs_key_ipv4_tunnel tun_key;  /* Encapsulating tunnel key. */
         struct {
                 u32     priority;       /* Packet QoS priority. */
                 u32     skb_mark;       /* SKB mark. */
@@ -130,7 +161,7 @@ struct sw_flow *ovs_flow_alloc(void);
 void ovs_flow_deferred_free(struct sw_flow *);
 void ovs_flow_free(struct sw_flow *flow);
 
-struct sw_flow_actions *ovs_flow_actions_alloc(const struct nlattr *);
+struct sw_flow_actions *ovs_flow_actions_alloc(int actions_len);
 void ovs_flow_deferred_free_acts(struct sw_flow_actions *);
 
 int ovs_flow_extract(struct sk_buff *, u16 in_port, struct sw_flow_key *,
@@ -141,10 +172,10 @@ u64 ovs_flow_used_time(unsigned long flow_jiffies);
 int ovs_flow_to_nlattrs(const struct sw_flow_key *, struct sk_buff *);
 int ovs_flow_from_nlattrs(struct sw_flow_key *swkey, int *key_lenp,
                       const struct nlattr *);
-int ovs_flow_metadata_from_nlattrs(u32 *priority, u32 *mark, u16 *in_port,
-                               const struct nlattr *);
+int ovs_flow_metadata_from_nlattrs(struct sw_flow *flow, int key_len,
+                                  const struct nlattr *attr);
 
-#define MAX_ACTIONS_BUFSIZE    (16 * 1024)
+#define MAX_ACTIONS_BUFSIZE    (32 * 1024)
 #define TBL_MIN_BUCKETS         1024
 
 struct flow_table {
@@ -173,11 +204,15 @@ void ovs_flow_tbl_deferred_destroy(struct flow_table *table);
 struct flow_table *ovs_flow_tbl_alloc(int new_size);
 struct flow_table *ovs_flow_tbl_expand(struct flow_table *table);
 struct flow_table *ovs_flow_tbl_rehash(struct flow_table *table);
-void ovs_flow_tbl_insert(struct flow_table *table, struct sw_flow *flow);
+void ovs_flow_tbl_insert(struct flow_table *table, struct sw_flow *flow,
+                         struct sw_flow_key *key, int key_len);
 void ovs_flow_tbl_remove(struct flow_table *table, struct sw_flow *flow);
-u32 ovs_flow_hash(const struct sw_flow_key *key, int key_len);
 
 struct sw_flow *ovs_flow_tbl_next(struct flow_table *table, u32 *bucket, u32 *idx);
 extern const int ovs_key_lens[OVS_KEY_ATTR_MAX + 1];
+int ovs_ipv4_tun_from_nlattr(const struct nlattr *attr,
+                         struct ovs_key_ipv4_tunnel *tun_key);
+int ovs_ipv4_tun_to_nlattr(struct sk_buff *skb,
+                        const struct ovs_key_ipv4_tunnel *tun_key);
 
 #endif /* flow.h */
diff --git a/net/openvswitch/vport-gre.c b/net/openvswitch/vport-gre.c
new file mode 100644
index 000000000000..493e9775dcda
--- /dev/null
+++ b/net/openvswitch/vport-gre.c
@@ -0,0 +1,275 @@
+/*
+ * Copyright (c) 2007-2013 Nicira, Inc.
+ *
+ * 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
+ */
+
+#ifdef CONFIG_OPENVSWITCH_GRE
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
+#include <linux/if.h>
+#include <linux/skbuff.h>
+#include <linux/ip.h>
+#include <linux/if_tunnel.h>
+#include <linux/if_vlan.h>
+#include <linux/in.h>
+#include <linux/if_vlan.h>
+#include <linux/in.h>
+#include <linux/in_route.h>
+#include <linux/inetdevice.h>
+#include <linux/jhash.h>
+#include <linux/list.h>
+#include <linux/kernel.h>
+#include <linux/workqueue.h>
+#include <linux/rculist.h>
+#include <net/route.h>
+#include <net/xfrm.h>
+
+#include <net/icmp.h>
+#include <net/ip.h>
+#include <net/ip_tunnels.h>
+#include <net/gre.h>
+#include <net/net_namespace.h>
+#include <net/netns/generic.h>
+#include <net/protocol.h>
+
+#include "datapath.h"
+#include "vport.h"
+
+/* Returns the least-significant 32 bits of a __be64. */
+static __be32 be64_get_low32(__be64 x)
+{
+#ifdef __BIG_ENDIAN
+        return (__force __be32)x;
+#else
+        return (__force __be32)((__force u64)x >> 32);
+#endif
+}
+
+static __be16 filter_tnl_flags(__be16 flags)
+{
+        return flags & (TUNNEL_CSUM | TUNNEL_KEY);
+}
+
+static struct sk_buff *__build_header(struct sk_buff *skb,
+                                      int tunnel_hlen)
+{
+        const struct ovs_key_ipv4_tunnel *tun_key = OVS_CB(skb)->tun_key;
+        struct tnl_ptk_info tpi;
+
+        skb = gre_handle_offloads(skb, !!(tun_key->tun_flags & TUNNEL_CSUM));
+        if (IS_ERR(skb))
+                return NULL;
+
+        tpi.flags = filter_tnl_flags(tun_key->tun_flags);
+        tpi.proto = htons(ETH_P_TEB);
+        tpi.key = be64_get_low32(tun_key->tun_id);
+        tpi.seq = 0;
+        gre_build_header(skb, &tpi, tunnel_hlen);
+
+        return skb;
+}
+
+static __be64 key_to_tunnel_id(__be32 key, __be32 seq)
+{
+#ifdef __BIG_ENDIAN
+        return (__force __be64)((__force u64)seq << 32 | (__force u32)key);
+#else
+        return (__force __be64)((__force u64)key << 32 | (__force u32)seq);
+#endif
+}
+
+/* Called with rcu_read_lock and BH disabled. */
+static int gre_rcv(struct sk_buff *skb,
+                   const struct tnl_ptk_info *tpi)
+{
+        struct ovs_key_ipv4_tunnel tun_key;
+        struct ovs_net *ovs_net;
+        struct vport *vport;
+        __be64 key;
+
+        ovs_net = net_generic(dev_net(skb->dev), ovs_net_id);
+        vport = rcu_dereference(ovs_net->vport_net.gre_vport);
+        if (unlikely(!vport))
+                return PACKET_REJECT;
+
+        key = key_to_tunnel_id(tpi->key, tpi->seq);
+        ovs_flow_tun_key_init(&tun_key, ip_hdr(skb), key,
+                              filter_tnl_flags(tpi->flags));
+
+        ovs_vport_receive(vport, skb, &tun_key);
+        return PACKET_RCVD;
+}
+
+static int gre_tnl_send(struct vport *vport, struct sk_buff *skb)
+{
+        struct net *net = ovs_dp_get_net(vport->dp);
+        struct flowi4 fl;
+        struct rtable *rt;
+        int min_headroom;
+        int tunnel_hlen;
+        __be16 df;
+        int err;
+
+        if (unlikely(!OVS_CB(skb)->tun_key)) {
+                err = -EINVAL;
+                goto error;
+        }
+
+        /* Route lookup */
+        memset(&fl, 0, sizeof(fl));
+        fl.daddr = OVS_CB(skb)->tun_key->ipv4_dst;
+        fl.saddr = OVS_CB(skb)->tun_key->ipv4_src;
+        fl.flowi4_tos = RT_TOS(OVS_CB(skb)->tun_key->ipv4_tos);
+        fl.flowi4_mark = skb->mark;
+        fl.flowi4_proto = IPPROTO_GRE;
+
+        rt = ip_route_output_key(net, &fl);
+        if (IS_ERR(rt))
+                return PTR_ERR(rt);
+
+        tunnel_hlen = ip_gre_calc_hlen(OVS_CB(skb)->tun_key->tun_flags);
+
+        min_headroom = LL_RESERVED_SPACE(rt->dst.dev) + rt->dst.header_len
+                        + tunnel_hlen + sizeof(struct iphdr)
+                        + (vlan_tx_tag_present(skb) ? VLAN_HLEN : 0);
+        if (skb_headroom(skb) < min_headroom || skb_header_cloned(skb)) {
+                int head_delta = SKB_DATA_ALIGN(min_headroom -
+                                                skb_headroom(skb) +
+                                                16);
+                err = pskb_expand_head(skb, max_t(int, head_delta, 0),
+                                        0, GFP_ATOMIC);
+                if (unlikely(err))
+                        goto err_free_rt;
+        }
+
+        if (vlan_tx_tag_present(skb)) {
+                if (unlikely(!__vlan_put_tag(skb,
+                                             skb->vlan_proto,
+                                             vlan_tx_tag_get(skb)))) {
+                        err = -ENOMEM;
+                        goto err_free_rt;
+                }
+                skb->vlan_tci = 0;
+        }
+
+        /* Push Tunnel header. */
+        skb = __build_header(skb, tunnel_hlen);
+        if (unlikely(!skb)) {
+                err = 0;
+                goto err_free_rt;
+        }
+
+        df = OVS_CB(skb)->tun_key->tun_flags & TUNNEL_DONT_FRAGMENT ?
+                htons(IP_DF) : 0;
+
+        skb->local_df = 1;
+
+        return iptunnel_xmit(net, rt, skb, fl.saddr,
+                             OVS_CB(skb)->tun_key->ipv4_dst, IPPROTO_GRE,
+                             OVS_CB(skb)->tun_key->ipv4_tos,
+                             OVS_CB(skb)->tun_key->ipv4_ttl, df);
+err_free_rt:
+        ip_rt_put(rt);
+error:
+        return err;
+}
+
+static struct gre_cisco_protocol gre_protocol = {
+        .handler        = gre_rcv,
+        .priority       = 1,
+};
+
+static int gre_ports;
+static int gre_init(void)
+{
+        int err;
+
+        gre_ports++;
+        if (gre_ports > 1)
+                return 0;
+
+        err = gre_cisco_register(&gre_protocol);
+        if (err)
+                pr_warn("cannot register gre protocol handler\n");
+
+        return err;
+}
+
+static void gre_exit(void)
+{
+        gre_ports--;
+        if (gre_ports > 0)
+                return;
+
+        gre_cisco_unregister(&gre_protocol);
+}
+
+static const char *gre_get_name(const struct vport *vport)
+{
+        return vport_priv(vport);
+}
+
+static struct vport *gre_create(const struct vport_parms *parms)
+{
+        struct net *net = ovs_dp_get_net(parms->dp);
+        struct ovs_net *ovs_net;
+        struct vport *vport;
+        int err;
+
+        err = gre_init();
+        if (err)
+                return ERR_PTR(err);
+
+        ovs_net = net_generic(net, ovs_net_id);
+        if (ovsl_dereference(ovs_net->vport_net.gre_vport)) {
+                vport = ERR_PTR(-EEXIST);
+                goto error;
+        }
+
+        vport = ovs_vport_alloc(IFNAMSIZ, &ovs_gre_vport_ops, parms);
+        if (IS_ERR(vport))
+                goto error;
+
+        strncpy(vport_priv(vport), parms->name, IFNAMSIZ);
+        rcu_assign_pointer(ovs_net->vport_net.gre_vport, vport);
+        return vport;
+
+error:
+        gre_exit();
+        return vport;
+}
+
+static void gre_tnl_destroy(struct vport *vport)
+{
+        struct net *net = ovs_dp_get_net(vport->dp);
+        struct ovs_net *ovs_net;
+
+        ovs_net = net_generic(net, ovs_net_id);
+
+        rcu_assign_pointer(ovs_net->vport_net.gre_vport, NULL);
+        ovs_vport_deferred_free(vport);
+        gre_exit();
+}
+
+const struct vport_ops ovs_gre_vport_ops = {
+        .type           = OVS_VPORT_TYPE_GRE,
+        .create         = gre_create,
+        .destroy        = gre_tnl_destroy,
+        .get_name       = gre_get_name,
+        .send           = gre_tnl_send,
+};
+
+#endif /* OPENVSWITCH_GRE */
diff --git a/net/openvswitch/vport-internal_dev.c b/net/openvswitch/vport-internal_dev.c
index 84e0a0379186..98d3edbbc235 100644
--- a/net/openvswitch/vport-internal_dev.c
+++ b/net/openvswitch/vport-internal_dev.c
@@ -67,7 +67,7 @@ static struct rtnl_link_stats64 *internal_dev_get_stats(struct net_device *netde
 static int internal_dev_xmit(struct sk_buff *skb, struct net_device *netdev)
 {
         rcu_read_lock();
-        ovs_vport_receive(internal_dev_priv(netdev)->vport, skb);
+        ovs_vport_receive(internal_dev_priv(netdev)->vport, skb, NULL);
         rcu_read_unlock();
         return 0;
 }
@@ -221,6 +221,7 @@ static int internal_dev_recv(struct vport *vport, struct sk_buff *skb)
         skb->dev = netdev;
         skb->pkt_type = PACKET_HOST;
         skb->protocol = eth_type_trans(skb, netdev);
+        skb_postpull_rcsum(skb, eth_hdr(skb), ETH_HLEN);
 
         netif_rx(skb);
 
diff --git a/net/openvswitch/vport-netdev.c b/net/openvswitch/vport-netdev.c
index 4f01c6d2ffa4..5982f3f62835 100644
--- a/net/openvswitch/vport-netdev.c
+++ b/net/openvswitch/vport-netdev.c
@@ -49,7 +49,9 @@ static void netdev_port_receive(struct vport *vport, struct sk_buff *skb)
                 return;
 
         skb_push(skb, ETH_HLEN);
-        ovs_vport_receive(vport, skb);
+        ovs_skb_postpush_rcsum(skb, skb->data, ETH_HLEN);
+
+        ovs_vport_receive(vport, skb, NULL);
         return;
 
 error:
@@ -170,7 +172,7 @@ static int netdev_send(struct vport *vport, struct sk_buff *skb)
                 net_warn_ratelimited("%s: dropped over-mtu packet: %d > %d\n",
                                      netdev_vport->dev->name,
                                      packet_length(skb), mtu);
-                goto error;
+                goto drop;
         }
 
         skb->dev = netdev_vport->dev;
@@ -179,9 +181,8 @@ static int netdev_send(struct vport *vport, struct sk_buff *skb)
 
         return len;
 
-error:
+drop:
         kfree_skb(skb);
-        ovs_vport_record_error(vport, VPORT_E_TX_DROPPED);
         return 0;
 }
 
diff --git a/net/openvswitch/vport-netdev.h b/net/openvswitch/vport-netdev.h
index a3cb3a32cd77..dd298b5c5cdb 100644
--- a/net/openvswitch/vport-netdev.h
+++ b/net/openvswitch/vport-netdev.h
@@ -39,6 +39,5 @@ netdev_vport_priv(const struct vport *vport)
 }
 
 const char *ovs_netdev_get_name(const struct vport *);
-const char *ovs_netdev_get_config(const struct vport *);
 
 #endif /* vport_netdev.h */
diff --git a/net/openvswitch/vport.c b/net/openvswitch/vport.c
index 720623190eaa..d4c7fa04ce08 100644
--- a/net/openvswitch/vport.c
+++ b/net/openvswitch/vport.c
@@ -38,6 +38,10 @@
 static const struct vport_ops *vport_ops_list[] = {
         &ovs_netdev_vport_ops,
         &ovs_internal_vport_ops,
+
+#ifdef CONFIG_OPENVSWITCH_GRE
+        &ovs_gre_vport_ops,
+#endif
 };
 
 /* Protected by RCU read lock for reading, ovs_mutex for writing. */
@@ -325,7 +329,8 @@ int ovs_vport_get_options(const struct vport *vport, struct sk_buff *skb)
  * Must be called with rcu_read_lock.  The packet cannot be shared and
  * skb->data should point to the Ethernet header.
  */
-void ovs_vport_receive(struct vport *vport, struct sk_buff *skb)
+void ovs_vport_receive(struct vport *vport, struct sk_buff *skb,
+                       struct ovs_key_ipv4_tunnel *tun_key)
 {
         struct pcpu_tstats *stats;
 
@@ -335,6 +340,7 @@ void ovs_vport_receive(struct vport *vport, struct sk_buff *skb)
         stats->rx_bytes += skb->len;
         u64_stats_update_end(&stats->syncp);
 
+        OVS_CB(skb)->tun_key = tun_key;
         ovs_dp_process_received_packet(vport, skb);
 }
 
@@ -351,7 +357,7 @@ int ovs_vport_send(struct vport *vport, struct sk_buff *skb)
 {
         int sent = vport->ops->send(vport, skb);
 
-        if (likely(sent)) {
+        if (likely(sent > 0)) {
                 struct pcpu_tstats *stats;
 
                 stats = this_cpu_ptr(vport->percpu_stats);
@@ -360,7 +366,12 @@ int ovs_vport_send(struct vport *vport, struct sk_buff *skb)
                 stats->tx_packets++;
                 stats->tx_bytes += sent;
                 u64_stats_update_end(&stats->syncp);
-        }
+        } else if (sent < 0) {
+                ovs_vport_record_error(vport, VPORT_E_TX_ERROR);
+                kfree_skb(skb);
+        } else
+                ovs_vport_record_error(vport, VPORT_E_TX_DROPPED);
+
         return sent;
 }
 
@@ -371,7 +382,7 @@ int ovs_vport_send(struct vport *vport, struct sk_buff *skb)
  * @err_type: one of enum vport_err_type types to indicate the error type
  *
  * If using the vport generic stats layer indicate that an error of the given
- * type has occured.
+ * type has occurred.
  */
 void ovs_vport_record_error(struct vport *vport, enum vport_err_type err_type)
 {
@@ -397,3 +408,18 @@ void ovs_vport_record_error(struct vport *vport, enum vport_err_type err_type)
 
         spin_unlock(&vport->stats_lock);
 }
+
+static void free_vport_rcu(struct rcu_head *rcu)
+{
+        struct vport *vport = container_of(rcu, struct vport, rcu);
+
+        ovs_vport_free(vport);
+}
+
+void ovs_vport_deferred_free(struct vport *vport)
+{
+        if (!vport)
+                return;
+
+        call_rcu(&vport->rcu, free_vport_rcu);
+}
diff --git a/net/openvswitch/vport.h b/net/openvswitch/vport.h
index 68a377bc0841..376045c42f8b 100644
--- a/net/openvswitch/vport.h
+++ b/net/openvswitch/vport.h
@@ -34,6 +34,11 @@ struct vport_parms;
 
 /* The following definitions are for users of the vport subsytem: */
 
+/* The following definitions are for users of the vport subsytem: */
+struct vport_net {
+        struct vport __rcu *gre_vport;
+};
+
 int ovs_vport_init(void);
 void ovs_vport_exit(void);
 
@@ -123,9 +128,8 @@ struct vport_parms {
  * existing vport to a &struct sk_buff.  May be %NULL for a vport that does not
  * have any configuration.
  * @get_name: Get the device's name.
- * @get_config: Get the device's configuration.
- * May be null if the device does not have an ifindex.
- * @send: Send a packet on the device.  Returns the length of the packet sent.
+ * @send: Send a packet on the device.  Returns the length of the packet sent,
+ * zero for dropped packets or negative for error.
  */
 struct vport_ops {
         enum ovs_vport_type type;
@@ -139,7 +143,6 @@ struct vport_ops {
 
         /* Called with rcu_read_lock or ovs_mutex. */
         const char *(*get_name)(const struct vport *);
-        void (*get_config)(const struct vport *, void *);
 
         int (*send)(struct vport *, struct sk_buff *);
 };
@@ -154,6 +157,7 @@ enum vport_err_type {
 struct vport *ovs_vport_alloc(int priv_size, const struct vport_ops *,
                               const struct vport_parms *);
 void ovs_vport_free(struct vport *);
+void ovs_vport_deferred_free(struct vport *vport);
 
 #define VPORT_ALIGN 8
 
@@ -186,12 +190,21 @@ static inline struct vport *vport_from_priv(const void *priv)
         return (struct vport *)(priv - ALIGN(sizeof(struct vport), VPORT_ALIGN));
 }
 
-void ovs_vport_receive(struct vport *, struct sk_buff *);
+void ovs_vport_receive(struct vport *, struct sk_buff *,
+                       struct ovs_key_ipv4_tunnel *);
 void ovs_vport_record_error(struct vport *, enum vport_err_type err_type);
 
 /* List of statically compiled vport implementations.  Don't forget to also
  * add yours to the list at the top of vport.c. */
 extern const struct vport_ops ovs_netdev_vport_ops;
 extern const struct vport_ops ovs_internal_vport_ops;
+extern const struct vport_ops ovs_gre_vport_ops;
+
+static inline void ovs_skb_postpush_rcsum(struct sk_buff *skb,
+                                      const void *start, unsigned int len)
+{
+        if (skb->ip_summed == CHECKSUM_COMPLETE)
+                skb->csum = csum_add(skb->csum, csum_partial(start, len, 0));
+}
 
 #endif /* vport.h */
diff --git a/net/packet/af_packet.c b/net/packet/af_packet.c
index 20a1bd0e6549..4b66c752eae5 100644
--- a/net/packet/af_packet.c
+++ b/net/packet/af_packet.c
@@ -3330,10 +3330,11 @@ static int packet_getsockopt(struct socket *sock, int level, int optname,
 }
 
 
-static int packet_notifier(struct notifier_block *this, unsigned long msg, void *data)
+static int packet_notifier(struct notifier_block *this,
+                           unsigned long msg, void *ptr)
 {
         struct sock *sk;
-        struct net_device *dev = data;
+        struct net_device *dev = netdev_notifier_info_to_dev(ptr);
         struct net *net = dev_net(dev);
 
         rcu_read_lock();
diff --git a/net/phonet/pn_dev.c b/net/phonet/pn_dev.c
index 45a7df6575de..56a6146ac94b 100644
--- a/net/phonet/pn_dev.c
+++ b/net/phonet/pn_dev.c
@@ -292,9 +292,9 @@ static void phonet_route_autodel(struct net_device *dev)
 
 /* notify Phonet of device events */
 static int phonet_device_notify(struct notifier_block *me, unsigned long what,
-                                void *arg)
+                                void *ptr)
 {
-        struct net_device *dev = arg;
+        struct net_device *dev = netdev_notifier_info_to_dev(ptr);
 
         switch (what) {
         case NETDEV_REGISTER:
diff --git a/net/phonet/sysctl.c b/net/phonet/sysctl.c
index d6bbbbd0af18..c02a8c4bc11f 100644
--- a/net/phonet/sysctl.c
+++ b/net/phonet/sysctl.c
@@ -61,13 +61,13 @@ void phonet_get_local_port_range(int *min, int *max)
         } while (read_seqretry(&local_port_range_lock, seq));
 }
 
-static int proc_local_port_range(ctl_table *table, int write,
+static int proc_local_port_range(struct ctl_table *table, int write,
                                 void __user *buffer,
                                 size_t *lenp, loff_t *ppos)
 {
         int ret;
         int range[2] = {local_port_range[0], local_port_range[1]};
-        ctl_table tmp = {
+        struct ctl_table tmp = {
                 .data = &range,
                 .maxlen = sizeof(range),
                 .mode = table->mode,
diff --git a/net/rds/ib_sysctl.c b/net/rds/ib_sysctl.c
index 7e643bafb4af..e4e41b3afce7 100644
--- a/net/rds/ib_sysctl.c
+++ b/net/rds/ib_sysctl.c
@@ -61,7 +61,7 @@ static unsigned long rds_ib_sysctl_max_unsig_wr_max = 64;
  */
 unsigned int rds_ib_sysctl_flow_control = 0;
 
-static ctl_table rds_ib_sysctl_table[] = {
+static struct ctl_table rds_ib_sysctl_table[] = {
         {
                 .procname       = "max_send_wr",
                 .data           = &rds_ib_sysctl_max_send_wr,
diff --git a/net/rds/iw_sysctl.c b/net/rds/iw_sysctl.c
index 5d5ebd576f3f..89c91515ed0c 100644
--- a/net/rds/iw_sysctl.c
+++ b/net/rds/iw_sysctl.c
@@ -55,7 +55,7 @@ static unsigned long rds_iw_sysctl_max_unsig_bytes_max = ~0UL;
 
 unsigned int rds_iw_sysctl_flow_control = 1;
 
-static ctl_table rds_iw_sysctl_table[] = {
+static struct ctl_table rds_iw_sysctl_table[] = {
         {
                 .procname       = "max_send_wr",
                 .data           = &rds_iw_sysctl_max_send_wr,
diff --git a/net/rds/sysctl.c b/net/rds/sysctl.c
index 907214b4c4d0..b5cb2aa08f33 100644
--- a/net/rds/sysctl.c
+++ b/net/rds/sysctl.c
@@ -49,7 +49,7 @@ unsigned int  rds_sysctl_max_unacked_bytes = (16 << 20);
 
 unsigned int rds_sysctl_ping_enable = 1;
 
-static ctl_table rds_sysctl_rds_table[] = {
+static struct ctl_table rds_sysctl_rds_table[] = {
         {
                 .procname       = "reconnect_min_delay_ms",
                 .data           = &rds_sysctl_reconnect_min_jiffies,
diff --git a/net/rose/af_rose.c b/net/rose/af_rose.c
index 9c8347451597..e98fcfbe6007 100644
--- a/net/rose/af_rose.c
+++ b/net/rose/af_rose.c
@@ -202,10 +202,10 @@ static void rose_kill_by_device(struct net_device *dev)
 /*
  *      Handle device status changes.
  */
-static int rose_device_event(struct notifier_block *this, unsigned long event,
-        void *ptr)
+static int rose_device_event(struct notifier_block *this,
+                             unsigned long event, void *ptr)
 {
-        struct net_device *dev = (struct net_device *)ptr;
+        struct net_device *dev = netdev_notifier_info_to_dev(ptr);
 
         if (!net_eq(dev_net(dev), &init_net))
                 return NOTIFY_DONE;
diff --git a/net/rose/sysctl_net_rose.c b/net/rose/sysctl_net_rose.c
index 94ca9c2ccd69..89a9278795a9 100644
--- a/net/rose/sysctl_net_rose.c
+++ b/net/rose/sysctl_net_rose.c
@@ -24,7 +24,7 @@ static int min_window[] = {1}, max_window[] = {7};
 
 static struct ctl_table_header *rose_table_header;
 
-static ctl_table rose_table[] = {
+static struct ctl_table rose_table[] = {
         {
                 .procname       = "restart_request_timeout",
                 .data           = &sysctl_rose_restart_request_timeout,
diff --git a/net/sched/act_mirred.c b/net/sched/act_mirred.c
index 5d676edc22a6..977c10e0631b 100644
--- a/net/sched/act_mirred.c
+++ b/net/sched/act_mirred.c
@@ -243,7 +243,7 @@ nla_put_failure:
 static int mirred_device_event(struct notifier_block *unused,
                                unsigned long event, void *ptr)
 {
-        struct net_device *dev = ptr;
+        struct net_device *dev = netdev_notifier_info_to_dev(ptr);
         struct tcf_mirred *m;
 
         if (event == NETDEV_UNREGISTER)
diff --git a/net/sched/sch_cbq.c b/net/sched/sch_cbq.c
index 1bc210ffcba2..71a568862557 100644
--- a/net/sched/sch_cbq.c
+++ b/net/sched/sch_cbq.c
@@ -130,7 +130,7 @@ struct cbq_class {
         psched_time_t           penalized;
         struct gnet_stats_basic_packed bstats;
         struct gnet_stats_queue qstats;
-        struct gnet_stats_rate_est rate_est;
+        struct gnet_stats_rate_est64 rate_est;
         struct tc_cbq_xstats    xstats;
 
         struct tcf_proto        *filter_list;
diff --git a/net/sched/sch_drr.c b/net/sched/sch_drr.c
index 759b308d1a8d..8302717ea303 100644
--- a/net/sched/sch_drr.c
+++ b/net/sched/sch_drr.c
@@ -25,7 +25,7 @@ struct drr_class {
 
         struct gnet_stats_basic_packed          bstats;
         struct gnet_stats_queue         qstats;
-        struct gnet_stats_rate_est      rate_est;
+        struct gnet_stats_rate_est64    rate_est;
         struct list_head                alist;
         struct Qdisc                    *qdisc;
 
diff --git a/net/sched/sch_generic.c b/net/sched/sch_generic.c
index 20224086cc28..4626cef4b76e 100644
--- a/net/sched/sch_generic.c
+++ b/net/sched/sch_generic.c
@@ -901,37 +901,33 @@ void dev_shutdown(struct net_device *dev)
 void psched_ratecfg_precompute(struct psched_ratecfg *r,
                                const struct tc_ratespec *conf)
 {
-        u64 factor;
-        u64 mult;
-        int shift;
-
         memset(r, 0, sizeof(*r));
         r->overhead = conf->overhead;
-        r->rate_bps = (u64)conf->rate << 3;
+        r->rate_bytes_ps = conf->rate;
         r->mult = 1;
         /*
-         * Calibrate mult, shift so that token counting is accurate
-         * for smallest packet size (64 bytes).  Token (time in ns) is
-         * computed as (bytes * 8) * NSEC_PER_SEC / rate_bps.  It will
-         * work as long as the smallest packet transfer time can be
-         * accurately represented in nanosec.
+         * The deal here is to replace a divide by a reciprocal one
+         * in fast path (a reciprocal divide is a multiply and a shift)
+         *
+         * Normal formula would be :
+         *  time_in_ns = (NSEC_PER_SEC * len) / rate_bps
+         *
+         * We compute mult/shift to use instead :
+         *  time_in_ns = (len * mult) >> shift;
+         *
+         * We try to get the highest possible mult value for accuracy,
+         * but have to make sure no overflows will ever happen.
          */
-        if (r->rate_bps > 0) {
-                /*
-                 * Higher shift gives better accuracy.  Find the largest
-                 * shift such that mult fits in 32 bits.
-                 */
-                for (shift = 0; shift < 16; shift++) {
-                        r->shift = shift;
-                        factor = 8LLU * NSEC_PER_SEC * (1 << r->shift);
-                        mult = div64_u64(factor, r->rate_bps);
-                        if (mult > UINT_MAX)
+        if (r->rate_bytes_ps > 0) {
+                u64 factor = NSEC_PER_SEC;
+
+                for (;;) {
+                        r->mult = div64_u64(factor, r->rate_bytes_ps);
+                        if (r->mult & (1U << 31) || factor & (1ULL << 63))
                                 break;
+                        factor <<= 1;
+                        r->shift++;
                 }
-
-                r->shift = shift - 1;
-                factor = 8LLU * NSEC_PER_SEC * (1 << r->shift);
-                r->mult = div64_u64(factor, r->rate_bps);
         }
 }
 EXPORT_SYMBOL(psched_ratecfg_precompute);
diff --git a/net/sched/sch_hfsc.c b/net/sched/sch_hfsc.c
index 9facea03faeb..c4075610502c 100644
--- a/net/sched/sch_hfsc.c
+++ b/net/sched/sch_hfsc.c
@@ -114,7 +114,7 @@ struct hfsc_class {
 
         struct gnet_stats_basic_packed bstats;
         struct gnet_stats_queue qstats;
-        struct gnet_stats_rate_est rate_est;
+        struct gnet_stats_rate_est64 rate_est;
         unsigned int    level;          /* class level in hierarchy */
         struct tcf_proto *filter_list;  /* filter list */
         unsigned int    filter_cnt;     /* filter count */
diff --git a/net/sched/sch_htb.c b/net/sched/sch_htb.c
index adaedd79389c..c2124ea29f45 100644
--- a/net/sched/sch_htb.c
+++ b/net/sched/sch_htb.c
@@ -65,6 +65,10 @@ static int htb_hysteresis __read_mostly = 0; /* whether to use mode hysteresis f
 module_param    (htb_hysteresis, int, 0640);
 MODULE_PARM_DESC(htb_hysteresis, "Hysteresis mode, less CPU load, less accurate");
 
+static int htb_rate_est = 0; /* htb classes have a default rate estimator */
+module_param(htb_rate_est, int, 0640);
+MODULE_PARM_DESC(htb_rate_est, "setup a default rate estimator (4sec 16sec) for htb classes");
+
 /* used internaly to keep status of single class */
 enum htb_cmode {
         HTB_CANT_SEND,          /* class can't send and can't borrow */
@@ -72,95 +76,105 @@ enum htb_cmode {
         HTB_CAN_SEND            /* class can send */
 };
 
-/* interior & leaf nodes; props specific to leaves are marked L: */
+struct htb_prio {
+        union {
+                struct rb_root  row;
+                struct rb_root  feed;
+        };
+        struct rb_node  *ptr;
+        /* When class changes from state 1->2 and disconnects from
+         * parent's feed then we lost ptr value and start from the
+         * first child again. Here we store classid of the
+         * last valid ptr (used when ptr is NULL).
+         */
+        u32             last_ptr_id;
+};
+
+/* interior & leaf nodes; props specific to leaves are marked L:
+ * To reduce false sharing, place mostly read fields at beginning,
+ * and mostly written ones at the end.
+ */
 struct htb_class {
         struct Qdisc_class_common common;
-        /* general class parameters */
-        struct gnet_stats_basic_packed bstats;
-        struct gnet_stats_queue qstats;
-        struct gnet_stats_rate_est rate_est;
-        struct tc_htb_xstats xstats;    /* our special stats */
-        int refcnt;             /* usage count of this class */
+        struct psched_ratecfg   rate;
+        struct psched_ratecfg   ceil;
+        s64                     buffer, cbuffer;/* token bucket depth/rate */
+        s64                     mbuffer;        /* max wait time */
+        int                     prio;           /* these two are used only by leaves... */
+        int                     quantum;        /* but stored for parent-to-leaf return */
 
-        /* topology */
-        int level;              /* our level (see above) */
-        unsigned int children;
-        struct htb_class *parent;       /* parent class */
+        struct tcf_proto        *filter_list;   /* class attached filters */
+        int                     filter_cnt;
+        int                     refcnt;         /* usage count of this class */
 
-        int prio;               /* these two are used only by leaves... */
-        int quantum;            /* but stored for parent-to-leaf return */
+        int                     level;          /* our level (see above) */
+        unsigned int            children;
+        struct htb_class        *parent;        /* parent class */
+
+        struct gnet_stats_rate_est64 rate_est;
+
+        /*
+         * Written often fields
+         */
+        struct gnet_stats_basic_packed bstats;
+        struct gnet_stats_queue qstats;
+        struct tc_htb_xstats    xstats; /* our special stats */
+
+        /* token bucket parameters */
+        s64                     tokens, ctokens;/* current number of tokens */
+        s64                     t_c;            /* checkpoint time */
 
         union {
                 struct htb_class_leaf {
-                        struct Qdisc *q;
-                        int deficit[TC_HTB_MAXDEPTH];
                         struct list_head drop_list;
+                        int             deficit[TC_HTB_MAXDEPTH];
+                        struct Qdisc    *q;
                 } leaf;
                 struct htb_class_inner {
-                        struct rb_root feed[TC_HTB_NUMPRIO];    /* feed trees */
-                        struct rb_node *ptr[TC_HTB_NUMPRIO];    /* current class ptr */
-                        /* When class changes from state 1->2 and disconnects from
-                         * parent's feed then we lost ptr value and start from the
-                         * first child again. Here we store classid of the
-                         * last valid ptr (used when ptr is NULL).
-                         */
-                        u32 last_ptr_id[TC_HTB_NUMPRIO];
+                        struct htb_prio clprio[TC_HTB_NUMPRIO];
                 } inner;
         } un;
-        struct rb_node node[TC_HTB_NUMPRIO];    /* node for self or feed tree */
-        struct rb_node pq_node; /* node for event queue */
-        s64     pq_key;
+        s64                     pq_key;
 
-        int prio_activity;      /* for which prios are we active */
-        enum htb_cmode cmode;   /* current mode of the class */
-
-        /* class attached filters */
-        struct tcf_proto *filter_list;
-        int filter_cnt;
+        int                     prio_activity;  /* for which prios are we active */
+        enum htb_cmode          cmode;          /* current mode of the class */
+        struct rb_node          pq_node;        /* node for event queue */
+        struct rb_node          node[TC_HTB_NUMPRIO];   /* node for self or feed tree */
+};
 
-        /* token bucket parameters */
-        struct psched_ratecfg rate;
-        struct psched_ratecfg ceil;
-        s64     buffer, cbuffer;        /* token bucket depth/rate */
-        s64     mbuffer;                /* max wait time */
-        s64     tokens, ctokens;        /* current number of tokens */
-        s64     t_c;                    /* checkpoint time */
+struct htb_level {
+        struct rb_root  wait_pq;
+        struct htb_prio hprio[TC_HTB_NUMPRIO];
 };
 
 struct htb_sched {
         struct Qdisc_class_hash clhash;
-        struct list_head drops[TC_HTB_NUMPRIO];/* active leaves (for drops) */
-
-        /* self list - roots of self generating tree */
-        struct rb_root row[TC_HTB_MAXDEPTH][TC_HTB_NUMPRIO];
-        int row_mask[TC_HTB_MAXDEPTH];
-        struct rb_node *ptr[TC_HTB_MAXDEPTH][TC_HTB_NUMPRIO];
-        u32 last_ptr_id[TC_HTB_MAXDEPTH][TC_HTB_NUMPRIO];
+        int                     defcls;         /* class where unclassified flows go to */
+        int                     rate2quantum;   /* quant = rate / rate2quantum */
 
-        /* self wait list - roots of wait PQs per row */
-        struct rb_root wait_pq[TC_HTB_MAXDEPTH];
+        /* filters for qdisc itself */
+        struct tcf_proto        *filter_list;
 
-        /* time of nearest event per level (row) */
-        s64     near_ev_cache[TC_HTB_MAXDEPTH];
+#define HTB_WARN_TOOMANYEVENTS  0x1
+        unsigned int            warned; /* only one warning */
+        int                     direct_qlen;
+        struct work_struct      work;
 
-        int defcls;             /* class where unclassified flows go to */
+        /* non shaped skbs; let them go directly thru */
+        struct sk_buff_head     direct_queue;
+        long                    direct_pkts;
 
-        /* filters for qdisc itself */
-        struct tcf_proto *filter_list;
+        struct qdisc_watchdog   watchdog;
 
-        int     rate2quantum;   /* quant = rate / rate2quantum */
-        s64     now;    /* cached dequeue time */
-        struct qdisc_watchdog watchdog;
+        s64                     now;    /* cached dequeue time */
+        struct list_head        drops[TC_HTB_NUMPRIO];/* active leaves (for drops) */
 
-        /* non shaped skbs; let them go directly thru */
-        struct sk_buff_head direct_queue;
-        int direct_qlen;        /* max qlen of above */
+        /* time of nearest event per level (row) */
+        s64                     near_ev_cache[TC_HTB_MAXDEPTH];
 
-        long direct_pkts;
+        int                     row_mask[TC_HTB_MAXDEPTH];
 
-#define HTB_WARN_TOOMANYEVENTS  0x1
-        unsigned int warned;    /* only one warning */
-        struct work_struct work;
+        struct htb_level        hlevel[TC_HTB_MAXDEPTH];
 };
 
 /* find class in global hash table using given handle */
@@ -276,7 +290,7 @@ static void htb_add_to_id_tree(struct rb_root *root,
 static void htb_add_to_wait_tree(struct htb_sched *q,
                                  struct htb_class *cl, s64 delay)
 {
-        struct rb_node **p = &q->wait_pq[cl->level].rb_node, *parent = NULL;
+        struct rb_node **p = &q->hlevel[cl->level].wait_pq.rb_node, *parent = NULL;
 
         cl->pq_key = q->now + delay;
         if (cl->pq_key == q->now)
@@ -296,7 +310,7 @@ static void htb_add_to_wait_tree(struct htb_sched *q,
                         p = &parent->rb_left;
         }
         rb_link_node(&cl->pq_node, parent, p);
-        rb_insert_color(&cl->pq_node, &q->wait_pq[cl->level]);
+        rb_insert_color(&cl->pq_node, &q->hlevel[cl->level].wait_pq);
 }
 
 /**
@@ -323,7 +337,7 @@ static inline void htb_add_class_to_row(struct htb_sched *q,
         while (mask) {
                 int prio = ffz(~mask);
                 mask &= ~(1 << prio);
-                htb_add_to_id_tree(q->row[cl->level] + prio, cl, prio);
+                htb_add_to_id_tree(&q->hlevel[cl->level].hprio[prio].row, cl, prio);
         }
 }
 
@@ -349,16 +363,18 @@ static inline void htb_remove_class_from_row(struct htb_sched *q,
                                                  struct htb_class *cl, int mask)
 {
         int m = 0;
+        struct htb_level *hlevel = &q->hlevel[cl->level];
 
         while (mask) {
                 int prio = ffz(~mask);
+                struct htb_prio *hprio = &hlevel->hprio[prio];
 
                 mask &= ~(1 << prio);
-                if (q->ptr[cl->level][prio] == cl->node + prio)
-                        htb_next_rb_node(q->ptr[cl->level] + prio);
+                if (hprio->ptr == cl->node + prio)
+                        htb_next_rb_node(&hprio->ptr);
 
-                htb_safe_rb_erase(cl->node + prio, q->row[cl->level] + prio);
-                if (!q->row[cl->level][prio].rb_node)
+                htb_safe_rb_erase(cl->node + prio, &hprio->row);
+                if (!hprio->row.rb_node)
                         m |= 1 << prio;
         }
         q->row_mask[cl->level] &= ~m;
@@ -382,13 +398,13 @@ static void htb_activate_prios(struct htb_sched *q, struct htb_class *cl)
                         int prio = ffz(~m);
                         m &= ~(1 << prio);
 
-                        if (p->un.inner.feed[prio].rb_node)
+                        if (p->un.inner.clprio[prio].feed.rb_node)
                                 /* parent already has its feed in use so that
                                  * reset bit in mask as parent is already ok
                                  */
                                 mask &= ~(1 << prio);
 
-                        htb_add_to_id_tree(p->un.inner.feed + prio, cl, prio);
+                        htb_add_to_id_tree(&p->un.inner.clprio[prio].feed, cl, prio);
                 }
                 p->prio_activity |= mask;
                 cl = p;
@@ -418,18 +434,19 @@ static void htb_deactivate_prios(struct htb_sched *q, struct htb_class *cl)
                         int prio = ffz(~m);
                         m &= ~(1 << prio);
 
-                        if (p->un.inner.ptr[prio] == cl->node + prio) {
+                        if (p->un.inner.clprio[prio].ptr == cl->node + prio) {
                                 /* we are removing child which is pointed to from
                                  * parent feed - forget the pointer but remember
                                  * classid
                                  */
-                                p->un.inner.last_ptr_id[prio] = cl->common.classid;
-                                p->un.inner.ptr[prio] = NULL;
+                                p->un.inner.clprio[prio].last_ptr_id = cl->common.classid;
+                                p->un.inner.clprio[prio].ptr = NULL;
                         }
 
-                        htb_safe_rb_erase(cl->node + prio, p->un.inner.feed + prio);
+                        htb_safe_rb_erase(cl->node + prio,
+                                          &p->un.inner.clprio[prio].feed);
 
-                        if (!p->un.inner.feed[prio].rb_node)
+                        if (!p->un.inner.clprio[prio].feed.rb_node)
                                 mask |= 1 << prio;
                 }
 
@@ -644,7 +661,7 @@ static void htb_charge_class(struct htb_sched *q, struct htb_class *cl,
                 htb_change_class_mode(q, cl, &diff);
                 if (old_mode != cl->cmode) {
                         if (old_mode != HTB_CAN_SEND)
-                                htb_safe_rb_erase(&cl->pq_node, q->wait_pq + cl->level);
+                                htb_safe_rb_erase(&cl->pq_node, &q->hlevel[cl->level].wait_pq);
                         if (cl->cmode != HTB_CAN_SEND)
                                 htb_add_to_wait_tree(q, cl, diff);
                 }
@@ -664,7 +681,7 @@ static void htb_charge_class(struct htb_sched *q, struct htb_class *cl,
  * next pending event (0 for no event in pq, q->now for too many events).
  * Note: Applied are events whose have cl->pq_key <= q->now.
  */
-static s64 htb_do_events(struct htb_sched *q, int level,
+static s64 htb_do_events(struct htb_sched *q, const int level,
                          unsigned long start)
 {
         /* don't run for longer than 2 jiffies; 2 is used instead of
@@ -672,10 +689,12 @@ static s64 htb_do_events(struct htb_sched *q, int level,
          * too soon
          */
         unsigned long stop_at = start + 2;
+        struct rb_root *wait_pq = &q->hlevel[level].wait_pq;
+
         while (time_before(jiffies, stop_at)) {
                 struct htb_class *cl;
                 s64 diff;
-                struct rb_node *p = rb_first(&q->wait_pq[level]);
+                struct rb_node *p = rb_first(wait_pq);
 
                 if (!p)
                         return 0;
@@ -684,7 +703,7 @@ static s64 htb_do_events(struct htb_sched *q, int level,
                 if (cl->pq_key > q->now)
                         return cl->pq_key;
 
-                htb_safe_rb_erase(p, q->wait_pq + level);
+                htb_safe_rb_erase(p, wait_pq);
                 diff = min_t(s64, q->now - cl->t_c, cl->mbuffer);
                 htb_change_class_mode(q, cl, &diff);
                 if (cl->cmode != HTB_CAN_SEND)
@@ -728,8 +747,7 @@ static struct rb_node *htb_id_find_next_upper(int prio, struct rb_node *n,
  *
  * Find leaf where current feed pointers points to.
  */
-static struct htb_class *htb_lookup_leaf(struct rb_root *tree, int prio,
-                                         struct rb_node **pptr, u32 * pid)
+static struct htb_class *htb_lookup_leaf(struct htb_prio *hprio, const int prio)
 {
         int i;
         struct {
@@ -738,10 +756,10 @@ static struct htb_class *htb_lookup_leaf(struct rb_root *tree, int prio,
                 u32 *pid;
         } stk[TC_HTB_MAXDEPTH], *sp = stk;
 
-        BUG_ON(!tree->rb_node);
-        sp->root = tree->rb_node;
-        sp->pptr = pptr;
-        sp->pid = pid;
+        BUG_ON(!hprio->row.rb_node);
+        sp->root = hprio->row.rb_node;
+        sp->pptr = &hprio->ptr;
+        sp->pid = &hprio->last_ptr_id;
 
         for (i = 0; i < 65535; i++) {
                 if (!*sp->pptr && *sp->pid) {
@@ -768,12 +786,15 @@ static struct htb_class *htb_lookup_leaf(struct rb_root *tree, int prio,
                         }
                 } else {
                         struct htb_class *cl;
+                        struct htb_prio *clp;
+
                         cl = rb_entry(*sp->pptr, struct htb_class, node[prio]);
                         if (!cl->level)
                                 return cl;
-                        (++sp)->root = cl->un.inner.feed[prio].rb_node;
-                        sp->pptr = cl->un.inner.ptr + prio;
-                        sp->pid = cl->un.inner.last_ptr_id + prio;
+                        clp = &cl->un.inner.clprio[prio];
+                        (++sp)->root = clp->feed.rb_node;
+                        sp->pptr = &clp->ptr;
+                        sp->pid = &clp->last_ptr_id;
                 }
         }
         WARN_ON(1);
@@ -783,15 +804,16 @@ static struct htb_class *htb_lookup_leaf(struct rb_root *tree, int prio,
 /* dequeues packet at given priority and level; call only if
  * you are sure that there is active class at prio/level
  */
-static struct sk_buff *htb_dequeue_tree(struct htb_sched *q, int prio,
-                                        int level)
+static struct sk_buff *htb_dequeue_tree(struct htb_sched *q, const int prio,
+                                        const int level)
 {
         struct sk_buff *skb = NULL;
         struct htb_class *cl, *start;
+        struct htb_level *hlevel = &q->hlevel[level];
+        struct htb_prio *hprio = &hlevel->hprio[prio];
+
         /* look initial class up in the row */
-        start = cl = htb_lookup_leaf(q->row[level] + prio, prio,
-                                     q->ptr[level] + prio,
-                                     q->last_ptr_id[level] + prio);
+        start = cl = htb_lookup_leaf(hprio, prio);
 
         do {
 next:
@@ -811,9 +833,7 @@ next:
                         if ((q->row_mask[level] & (1 << prio)) == 0)
                                 return NULL;
 
-                        next = htb_lookup_leaf(q->row[level] + prio,
-                                               prio, q->ptr[level] + prio,
-                                               q->last_ptr_id[level] + prio);
+                        next = htb_lookup_leaf(hprio, prio);
 
                         if (cl == start)        /* fix start if we just deleted it */
                                 start = next;
@@ -826,11 +846,9 @@ next:
                         break;
 
                 qdisc_warn_nonwc("htb", cl->un.leaf.q);
-                htb_next_rb_node((level ? cl->parent->un.inner.ptr : q->
-                                  ptr[0]) + prio);
-                cl = htb_lookup_leaf(q->row[level] + prio, prio,
-                                     q->ptr[level] + prio,
-                                     q->last_ptr_id[level] + prio);
+                htb_next_rb_node(level ? &cl->parent->un.inner.clprio[prio].ptr:
+                                         &q->hlevel[0].hprio[prio].ptr);
+                cl = htb_lookup_leaf(hprio, prio);
 
         } while (cl != start);
 
@@ -839,8 +857,8 @@ next:
                 cl->un.leaf.deficit[level] -= qdisc_pkt_len(skb);
                 if (cl->un.leaf.deficit[level] < 0) {
                         cl->un.leaf.deficit[level] += cl->quantum;
-                        htb_next_rb_node((level ? cl->parent->un.inner.ptr : q->
-                                          ptr[0]) + prio);
+                        htb_next_rb_node(level ? &cl->parent->un.inner.clprio[prio].ptr :
+                                                 &q->hlevel[0].hprio[prio].ptr);
                 }
                 /* this used to be after charge_class but this constelation
                  * gives us slightly better performance
@@ -880,15 +898,14 @@ ok:
         for (level = 0; level < TC_HTB_MAXDEPTH; level++) {
                 /* common case optimization - skip event handler quickly */
                 int m;
-                s64 event;
+                s64 event = q->near_ev_cache[level];
 
-                if (q->now >= q->near_ev_cache[level]) {
+                if (q->now >= event) {
                         event = htb_do_events(q, level, start_at);
                         if (!event)
                                 event = q->now + NSEC_PER_SEC;
                         q->near_ev_cache[level] = event;
-                } else
-                        event = q->near_ev_cache[level];
+                }
 
                 if (next_event > event)
                         next_event = event;
@@ -968,10 +985,8 @@ static void htb_reset(struct Qdisc *sch)
         qdisc_watchdog_cancel(&q->watchdog);
         __skb_queue_purge(&q->direct_queue);
         sch->q.qlen = 0;
-        memset(q->row, 0, sizeof(q->row));
+        memset(q->hlevel, 0, sizeof(q->hlevel));
         memset(q->row_mask, 0, sizeof(q->row_mask));
-        memset(q->wait_pq, 0, sizeof(q->wait_pq));
-        memset(q->ptr, 0, sizeof(q->ptr));
         for (i = 0; i < TC_HTB_NUMPRIO; i++)
                 INIT_LIST_HEAD(q->drops + i);
 }
@@ -1192,7 +1207,8 @@ static void htb_parent_to_leaf(struct htb_sched *q, struct htb_class *cl,
         WARN_ON(cl->level || !cl->un.leaf.q || cl->prio_activity);
 
         if (parent->cmode != HTB_CAN_SEND)
-                htb_safe_rb_erase(&parent->pq_node, q->wait_pq + parent->level);
+                htb_safe_rb_erase(&parent->pq_node,
+                                  &q->hlevel[parent->level].wait_pq);
 
         parent->level = 0;
         memset(&parent->un.inner, 0, sizeof(parent->un.inner));
@@ -1281,7 +1297,8 @@ static int htb_delete(struct Qdisc *sch, unsigned long arg)
                 htb_deactivate(q, cl);
 
         if (cl->cmode != HTB_CAN_SEND)
-                htb_safe_rb_erase(&cl->pq_node, q->wait_pq + cl->level);
+                htb_safe_rb_erase(&cl->pq_node,
+                                  &q->hlevel[cl->level].wait_pq);
 
         if (last_child)
                 htb_parent_to_leaf(q, cl, new_q);
@@ -1366,12 +1383,14 @@ static int htb_change_class(struct Qdisc *sch, u32 classid,
                 if (!cl)
                         goto failure;
 
-                err = gen_new_estimator(&cl->bstats, &cl->rate_est,
-                                        qdisc_root_sleeping_lock(sch),
-                                        tca[TCA_RATE] ? : &est.nla);
-                if (err) {
-                        kfree(cl);
-                        goto failure;
+                if (htb_rate_est || tca[TCA_RATE]) {
+                        err = gen_new_estimator(&cl->bstats, &cl->rate_est,
+                                                qdisc_root_sleeping_lock(sch),
+                                                tca[TCA_RATE] ? : &est.nla);
+                        if (err) {
+                                kfree(cl);
+                                goto failure;
+                        }
                 }
 
                 cl->refcnt = 1;
@@ -1401,7 +1420,7 @@ static int htb_change_class(struct Qdisc *sch, u32 classid,
 
                         /* remove from evt list because of level change */
                         if (parent->cmode != HTB_CAN_SEND) {
-                                htb_safe_rb_erase(&parent->pq_node, q->wait_pq);
+                                htb_safe_rb_erase(&parent->pq_node, &q->hlevel[0].wait_pq);
                                 parent->cmode = HTB_CAN_SEND;
                         }
                         parent->level = (parent->parent ? parent->parent->level
diff --git a/net/sched/sch_netem.c b/net/sched/sch_netem.c
index 3d2acc7a9c80..82f6016d89ab 100644
--- a/net/sched/sch_netem.c
+++ b/net/sched/sch_netem.c
@@ -23,6 +23,7 @@
 #include <linux/vmalloc.h>
 #include <linux/rtnetlink.h>
 #include <linux/reciprocal_div.h>
+#include <linux/rbtree.h>
 
 #include <net/netlink.h>
 #include <net/pkt_sched.h>
@@ -68,7 +69,8 @@
 */
 
 struct netem_sched_data {
-        /* internal t(ime)fifo qdisc uses sch->q and sch->limit */
+        /* internal t(ime)fifo qdisc uses t_root and sch->limit */
+        struct rb_root t_root;
 
         /* optional qdisc for classful handling (NULL at netem init) */
         struct Qdisc    *qdisc;
@@ -128,10 +130,35 @@ struct netem_sched_data {
  */
 struct netem_skb_cb {
         psched_time_t   time_to_send;
+        ktime_t         tstamp_save;
 };
 
+/* Because space in skb->cb[] is tight, netem overloads skb->next/prev/tstamp
+ * to hold a rb_node structure.
+ *
+ * If struct sk_buff layout is changed, the following checks will complain.
+ */
+static struct rb_node *netem_rb_node(struct sk_buff *skb)
+{
+        BUILD_BUG_ON(offsetof(struct sk_buff, next) != 0);
+        BUILD_BUG_ON(offsetof(struct sk_buff, prev) !=
+                     offsetof(struct sk_buff, next) + sizeof(skb->next));
+        BUILD_BUG_ON(offsetof(struct sk_buff, tstamp) !=
+                     offsetof(struct sk_buff, prev) + sizeof(skb->prev));
+        BUILD_BUG_ON(sizeof(struct rb_node) > sizeof(skb->next) +
+                                              sizeof(skb->prev) +
+                                              sizeof(skb->tstamp));
+        return (struct rb_node *)&skb->next;
+}
+
+static struct sk_buff *netem_rb_to_skb(struct rb_node *rb)
+{
+        return (struct sk_buff *)rb;
+}
+
 static inline struct netem_skb_cb *netem_skb_cb(struct sk_buff *skb)
 {
+        /* we assume we can use skb next/prev/tstamp as storage for rb_node */
         qdisc_cb_private_validate(skb, sizeof(struct netem_skb_cb));
         return (struct netem_skb_cb *)qdisc_skb_cb(skb)->data;
 }
@@ -333,20 +360,23 @@ static psched_time_t packet_len_2_sched_time(unsigned int len, struct netem_sche
 
 static void tfifo_enqueue(struct sk_buff *nskb, struct Qdisc *sch)
 {
-        struct sk_buff_head *list = &sch->q;
+        struct netem_sched_data *q = qdisc_priv(sch);
         psched_time_t tnext = netem_skb_cb(nskb)->time_to_send;
-        struct sk_buff *skb = skb_peek_tail(list);
+        struct rb_node **p = &q->t_root.rb_node, *parent = NULL;
 
-        /* Optimize for add at tail */
-        if (likely(!skb || tnext >= netem_skb_cb(skb)->time_to_send))
-                return __skb_queue_tail(list, nskb);
+        while (*p) {
+                struct sk_buff *skb;
 
-        skb_queue_reverse_walk(list, skb) {
+                parent = *p;
+                skb = netem_rb_to_skb(parent);
                 if (tnext >= netem_skb_cb(skb)->time_to_send)
-                        break;
+                        p = &parent->rb_right;
+                else
+                        p = &parent->rb_left;
         }
-
-        __skb_queue_after(list, skb, nskb);
+        rb_link_node(netem_rb_node(nskb), parent, p);
+        rb_insert_color(netem_rb_node(nskb), &q->t_root);
+        sch->q.qlen++;
 }
 
 /*
@@ -436,23 +466,28 @@ static int netem_enqueue(struct sk_buff *skb, struct Qdisc *sch)
                 now = psched_get_time();
 
                 if (q->rate) {
-                        struct sk_buff_head *list = &sch->q;
+                        struct sk_buff *last;
 
-                        if (!skb_queue_empty(list)) {
+                        if (!skb_queue_empty(&sch->q))
+                                last = skb_peek_tail(&sch->q);
+                        else
+                                last = netem_rb_to_skb(rb_last(&q->t_root));
+                        if (last) {
                                 /*
                                  * Last packet in queue is reference point (now),
                                  * calculate this time bonus and subtract
                                  * from delay.
                                  */
-                                delay -= netem_skb_cb(skb_peek_tail(list))->time_to_send - now;
+                                delay -= netem_skb_cb(last)->time_to_send - now;
                                 delay = max_t(psched_tdiff_t, 0, delay);
-                                now = netem_skb_cb(skb_peek_tail(list))->time_to_send;
+                                now = netem_skb_cb(last)->time_to_send;
                         }
 
                         delay += packet_len_2_sched_time(skb->len, q);
                 }
 
                 cb->time_to_send = now + delay;
+                cb->tstamp_save = skb->tstamp;
                 ++q->counter;
                 tfifo_enqueue(skb, sch);
         } else {
@@ -476,6 +511,21 @@ static unsigned int netem_drop(struct Qdisc *sch)
         unsigned int len;
 
         len = qdisc_queue_drop(sch);
+
+        if (!len) {
+                struct rb_node *p = rb_first(&q->t_root);
+
+                if (p) {
+                        struct sk_buff *skb = netem_rb_to_skb(p);
+
+                        rb_erase(p, &q->t_root);
+                        sch->q.qlen--;
+                        skb->next = NULL;
+                        skb->prev = NULL;
+                        len = qdisc_pkt_len(skb);
+                        kfree_skb(skb);
+                }
+        }
         if (!len && q->qdisc && q->qdisc->ops->drop)
             len = q->qdisc->ops->drop(q->qdisc);
         if (len)
@@ -488,19 +538,35 @@ static struct sk_buff *netem_dequeue(struct Qdisc *sch)
 {
         struct netem_sched_data *q = qdisc_priv(sch);
         struct sk_buff *skb;
+        struct rb_node *p;
 
         if (qdisc_is_throttled(sch))
                 return NULL;
 
 tfifo_dequeue:
-        skb = qdisc_peek_head(sch);
+        skb = __skb_dequeue(&sch->q);
         if (skb) {
-                const struct netem_skb_cb *cb = netem_skb_cb(skb);
+deliver:
+                sch->qstats.backlog -= qdisc_pkt_len(skb);
+                qdisc_unthrottled(sch);
+                qdisc_bstats_update(sch, skb);
+                return skb;
+        }
+        p = rb_first(&q->t_root);
+        if (p) {
+                psched_time_t time_to_send;
+
+                skb = netem_rb_to_skb(p);
 
                 /* if more time remaining? */
-                if (cb->time_to_send <= psched_get_time()) {
-                        __skb_unlink(skb, &sch->q);
-                        sch->qstats.backlog -= qdisc_pkt_len(skb);
+                time_to_send = netem_skb_cb(skb)->time_to_send;
+                if (time_to_send <= psched_get_time()) {
+                        rb_erase(p, &q->t_root);
+
+                        sch->q.qlen--;
+                        skb->next = NULL;
+                        skb->prev = NULL;
+                        skb->tstamp = netem_skb_cb(skb)->tstamp_save;
 
 #ifdef CONFIG_NET_CLS_ACT
                         /*
@@ -522,10 +588,7 @@ tfifo_dequeue:
                                 }
                                 goto tfifo_dequeue;
                         }
-deliver:
-                        qdisc_unthrottled(sch);
-                        qdisc_bstats_update(sch, skb);
-                        return skb;
+                        goto deliver;
                 }
 
                 if (q->qdisc) {
@@ -533,7 +596,7 @@ deliver:
                         if (skb)
                                 goto deliver;
                 }
-                qdisc_watchdog_schedule(&q->watchdog, cb->time_to_send);
+                qdisc_watchdog_schedule(&q->watchdog, time_to_send);
         }
 
         if (q->qdisc) {
diff --git a/net/sched/sch_qfq.c b/net/sched/sch_qfq.c
index d51852bba01c..7c195d972bf0 100644
--- a/net/sched/sch_qfq.c
+++ b/net/sched/sch_qfq.c
@@ -138,7 +138,7 @@ struct qfq_class {
 
         struct gnet_stats_basic_packed bstats;
         struct gnet_stats_queue qstats;
-        struct gnet_stats_rate_est rate_est;
+        struct gnet_stats_rate_est64 rate_est;
         struct Qdisc *qdisc;
         struct list_head alist;         /* Link for active-classes list. */
         struct qfq_aggregate *agg;      /* Parent aggregate. */
diff --git a/net/sched/sch_tbf.c b/net/sched/sch_tbf.c
index e478d316602b..1aaf1b6e51a2 100644
--- a/net/sched/sch_tbf.c
+++ b/net/sched/sch_tbf.c
@@ -116,14 +116,57 @@ struct tbf_sched_data {
         struct qdisc_watchdog watchdog; /* Watchdog timer */
 };
 
+
+/* GSO packet is too big, segment it so that tbf can transmit
+ * each segment in time
+ */
+static int tbf_segment(struct sk_buff *skb, struct Qdisc *sch)
+{
+        struct tbf_sched_data *q = qdisc_priv(sch);
+        struct sk_buff *segs, *nskb;
+        netdev_features_t features = netif_skb_features(skb);
+        int ret, nb;
+
+        segs = skb_gso_segment(skb, features & ~NETIF_F_GSO_MASK);
+
+        if (IS_ERR_OR_NULL(segs))
+                return qdisc_reshape_fail(skb, sch);
+
+        nb = 0;
+        while (segs) {
+                nskb = segs->next;
+                segs->next = NULL;
+                if (likely(segs->len <= q->max_size)) {
+                        qdisc_skb_cb(segs)->pkt_len = segs->len;
+                        ret = qdisc_enqueue(segs, q->qdisc);
+                } else {
+                        ret = qdisc_reshape_fail(skb, sch);
+                }
+                if (ret != NET_XMIT_SUCCESS) {
+                        if (net_xmit_drop_count(ret))
+                                sch->qstats.drops++;
+                } else {
+                        nb++;
+                }
+                segs = nskb;
+        }
+        sch->q.qlen += nb;
+        if (nb > 1)
+                qdisc_tree_decrease_qlen(sch, 1 - nb);
+        consume_skb(skb);
+        return nb > 0 ? NET_XMIT_SUCCESS : NET_XMIT_DROP;
+}
+
 static int tbf_enqueue(struct sk_buff *skb, struct Qdisc *sch)
 {
         struct tbf_sched_data *q = qdisc_priv(sch);
         int ret;
 
-        if (qdisc_pkt_len(skb) > q->max_size)
+        if (qdisc_pkt_len(skb) > q->max_size) {
+                if (skb_is_gso(skb))
+                        return tbf_segment(skb, sch);
                 return qdisc_reshape_fail(skb, sch);
-
+        }
         ret = qdisc_enqueue(skb, q->qdisc);
         if (ret != NET_XMIT_SUCCESS) {
                 if (net_xmit_drop_count(ret))
diff --git a/net/sctp/Kconfig b/net/sctp/Kconfig
index cf4852814e0c..71c1a598d9bc 100644
--- a/net/sctp/Kconfig
+++ b/net/sctp/Kconfig
@@ -30,7 +30,8 @@ menuconfig IP_SCTP
           homing at either or both ends of an association."
 
           To compile this protocol support as a module, choose M here: the
-          module will be called sctp.
+          module will be called sctp. Debug messages are handeled by the
+          kernel's dynamic debugging framework.
 
           If in doubt, say N.
 
@@ -48,14 +49,6 @@ config NET_SCTPPROBE
         To compile this code as a module, choose M here: the
         module will be called sctp_probe.
 
-config SCTP_DBG_MSG
-        bool "SCTP: Debug messages"
-        help
-          If you say Y, this will enable verbose debugging messages. 
-
-          If unsure, say N.  However, if you are running into problems, use 
-          this option to gather detailed trace information
-
 config SCTP_DBG_OBJCNT
         bool "SCTP: Debug object counts"
         depends on PROC_FS
diff --git a/net/sctp/associola.c b/net/sctp/associola.c
index 91cfd8f94a19..bce5b79662a6 100644
--- a/net/sctp/associola.c
+++ b/net/sctp/associola.c
@@ -86,10 +86,9 @@ static struct sctp_association *sctp_association_init(struct sctp_association *a
 
         /* Discarding const is appropriate here.  */
         asoc->ep = (struct sctp_endpoint *)ep;
-        sctp_endpoint_hold(asoc->ep);
-
-        /* Hold the sock.  */
         asoc->base.sk = (struct sock *)sk;
+
+        sctp_endpoint_hold(asoc->ep);
         sock_hold(asoc->base.sk);
 
         /* Initialize the common base substructure.  */
@@ -103,13 +102,7 @@ static struct sctp_association *sctp_association_init(struct sctp_association *a
         sctp_bind_addr_init(&asoc->base.bind_addr, ep->base.bind_addr.port);
 
         asoc->state = SCTP_STATE_CLOSED;
-
-        /* Set these values from the socket values, a conversion between
-         * millsecons to seconds/microseconds must also be done.
-         */
-        asoc->cookie_life.tv_sec = sp->assocparams.sasoc_cookie_life / 1000;
-        asoc->cookie_life.tv_usec = (sp->assocparams.sasoc_cookie_life % 1000)
-                                        * 1000;
+        asoc->cookie_life = ms_to_ktime(sp->assocparams.sasoc_cookie_life);
         asoc->frag_point = 0;
         asoc->user_frag = sp->user_frag;
 
@@ -343,8 +336,8 @@ static struct sctp_association *sctp_association_init(struct sctp_association *a
         return asoc;
 
 fail_init:
-        sctp_endpoint_put(asoc->ep);
         sock_put(asoc->base.sk);
+        sctp_endpoint_put(asoc->ep);
         return NULL;
 }
 
@@ -356,7 +349,7 @@ struct sctp_association *sctp_association_new(const struct sctp_endpoint *ep,
 {
         struct sctp_association *asoc;
 
-        asoc = t_new(struct sctp_association, gfp);
+        asoc = kzalloc(sizeof(*asoc), gfp);
         if (!asoc)
                 goto fail;
 
@@ -364,7 +357,8 @@ struct sctp_association *sctp_association_new(const struct sctp_endpoint *ep,
                 goto fail_init;
 
         SCTP_DBG_OBJCNT_INC(assoc);
-        SCTP_DEBUG_PRINTK("Created asoc %p\n", asoc);
+
+        pr_debug("Created asoc %p\n", asoc);
 
         return asoc;
 
@@ -462,7 +456,10 @@ void sctp_association_free(struct sctp_association *asoc)
 /* Cleanup and free up an association. */
 static void sctp_association_destroy(struct sctp_association *asoc)
 {
-        SCTP_ASSERT(asoc->base.dead, "Assoc is not dead", return);
+        if (unlikely(!asoc->base.dead)) {
+                WARN(1, "Attempt to destroy undead association %p!\n", asoc);
+                return;
+        }
 
         sctp_endpoint_put(asoc->ep);
         sock_put(asoc->base.sk);
@@ -543,11 +540,8 @@ void sctp_assoc_rm_peer(struct sctp_association *asoc,
         struct list_head        *pos;
         struct sctp_transport   *transport;
 
-        SCTP_DEBUG_PRINTK_IPADDR("sctp_assoc_rm_peer:association %p addr: ",
-                                 " port: %d\n",
-                                 asoc,
-                                 (&peer->ipaddr),
-                                 ntohs(peer->ipaddr.v4.sin_port));
+        pr_debug("%s: association:%p addr:%pISpc\n",
+                 __func__, asoc, &peer->ipaddr.sa);
 
         /* If we are to remove the current retran_path, update it
          * to the next peer before removing this peer from the list.
@@ -643,12 +637,8 @@ struct sctp_transport *sctp_assoc_add_peer(struct sctp_association *asoc,
         /* AF_INET and AF_INET6 share common port field. */
         port = ntohs(addr->v4.sin_port);
 
-        SCTP_DEBUG_PRINTK_IPADDR("sctp_assoc_add_peer:association %p addr: ",
-                                 " port: %d state:%d\n",
-                                 asoc,
-                                 addr,
-                                 port,
-                                 peer_state);
+        pr_debug("%s: association:%p addr:%pISpc state:%d\n", __func__,
+                 asoc, &addr->sa, peer_state);
 
         /* Set the port if it has not been set yet.  */
         if (0 == asoc->peer.port)
@@ -715,8 +705,9 @@ struct sctp_transport *sctp_assoc_add_peer(struct sctp_association *asoc,
         else
                 asoc->pathmtu = peer->pathmtu;
 
-        SCTP_DEBUG_PRINTK("sctp_assoc_add_peer:association %p PMTU set to "
-                          "%d\n", asoc, asoc->pathmtu);
+        pr_debug("%s: association:%p PMTU set to %d\n", __func__, asoc,
+                 asoc->pathmtu);
+
         peer->pmtu_pending = 0;
 
         asoc->frag_point = sctp_frag_point(asoc, asoc->pathmtu);
@@ -1356,12 +1347,8 @@ void sctp_assoc_update_retran_path(struct sctp_association *asoc)
         else
                 t = asoc->peer.retran_path;
 
-        SCTP_DEBUG_PRINTK_IPADDR("sctp_assoc_update_retran_path:association"
-                                 " %p addr: ",
-                                 " port: %d\n",
-                                 asoc,
-                                 (&t->ipaddr),
-                                 ntohs(t->ipaddr.v4.sin_port));
+        pr_debug("%s: association:%p addr:%pISpc\n", __func__, asoc,
+                 &t->ipaddr.sa);
 }
 
 /* Choose the transport for sending retransmit packet.  */
@@ -1408,8 +1395,8 @@ void sctp_assoc_sync_pmtu(struct sock *sk, struct sctp_association *asoc)
                 asoc->frag_point = sctp_frag_point(asoc, pmtu);
         }
 
-        SCTP_DEBUG_PRINTK("%s: asoc:%p, pmtu:%d, frag_point:%d\n",
-                          __func__, asoc, asoc->pathmtu, asoc->frag_point);
+        pr_debug("%s: asoc:%p, pmtu:%d, frag_point:%d\n", __func__, asoc,
+                 asoc->pathmtu, asoc->frag_point);
 }
 
 /* Should we send a SACK to update our peer? */
@@ -1461,9 +1448,9 @@ void sctp_assoc_rwnd_increase(struct sctp_association *asoc, unsigned int len)
                 asoc->rwnd_press -= change;
         }
 
-        SCTP_DEBUG_PRINTK("%s: asoc %p rwnd increased by %d to (%u, %u) "
-                          "- %u\n", __func__, asoc, len, asoc->rwnd,
-                          asoc->rwnd_over, asoc->a_rwnd);
+        pr_debug("%s: asoc:%p rwnd increased by %d to (%u, %u) - %u\n",
+                 __func__, asoc, len, asoc->rwnd, asoc->rwnd_over,
+                 asoc->a_rwnd);
 
         /* Send a window update SACK if the rwnd has increased by at least the
          * minimum of the association's PMTU and half of the receive buffer.
@@ -1472,9 +1459,11 @@ void sctp_assoc_rwnd_increase(struct sctp_association *asoc, unsigned int len)
          */
         if (sctp_peer_needs_update(asoc)) {
                 asoc->a_rwnd = asoc->rwnd;
-                SCTP_DEBUG_PRINTK("%s: Sending window update SACK- asoc: %p "
-                                  "rwnd: %u a_rwnd: %u\n", __func__,
-                                  asoc, asoc->rwnd, asoc->a_rwnd);
+
+                pr_debug("%s: sending window update SACK- asoc:%p rwnd:%u "
+                         "a_rwnd:%u\n", __func__, asoc, asoc->rwnd,
+                         asoc->a_rwnd);
+
                 sack = sctp_make_sack(asoc);
                 if (!sack)
                         return;
@@ -1496,8 +1485,10 @@ void sctp_assoc_rwnd_decrease(struct sctp_association *asoc, unsigned int len)
         int rx_count;
         int over = 0;
 
-        SCTP_ASSERT(asoc->rwnd, "rwnd zero", return);
-        SCTP_ASSERT(!asoc->rwnd_over, "rwnd_over not zero", return);
+        if (unlikely(!asoc->rwnd || asoc->rwnd_over))
+                pr_debug("%s: association:%p has asoc->rwnd:%u, "
+                         "asoc->rwnd_over:%u!\n", __func__, asoc,
+                         asoc->rwnd, asoc->rwnd_over);
 
         if (asoc->ep->rcvbuf_policy)
                 rx_count = atomic_read(&asoc->rmem_alloc);
@@ -1522,9 +1513,10 @@ void sctp_assoc_rwnd_decrease(struct sctp_association *asoc, unsigned int len)
                 asoc->rwnd_over = len - asoc->rwnd;
                 asoc->rwnd = 0;
         }
-        SCTP_DEBUG_PRINTK("%s: asoc %p rwnd decreased by %d to (%u, %u, %u)\n",
-                          __func__, asoc, len, asoc->rwnd,
-                          asoc->rwnd_over, asoc->rwnd_press);
+
+        pr_debug("%s: asoc:%p rwnd decreased by %d to (%u, %u, %u)\n",
+                 __func__, asoc, len, asoc->rwnd, asoc->rwnd_over,
+                 asoc->rwnd_press);
 }
 
 /* Build the bind address list for the association based on info from the
diff --git a/net/sctp/bind_addr.c b/net/sctp/bind_addr.c
index 41145fe31813..64977ea0f9c5 100644
--- a/net/sctp/bind_addr.c
+++ b/net/sctp/bind_addr.c
@@ -162,7 +162,7 @@ int sctp_add_bind_addr(struct sctp_bind_addr *bp, union sctp_addr *new,
         struct sctp_sockaddr_entry *addr;
 
         /* Add the address to the bind address list.  */
-        addr = t_new(struct sctp_sockaddr_entry, gfp);
+        addr = kzalloc(sizeof(*addr), gfp);
         if (!addr)
                 return -ENOMEM;
 
diff --git a/net/sctp/chunk.c b/net/sctp/chunk.c
index 69ce21e3716f..5780565f5b7d 100644
--- a/net/sctp/chunk.c
+++ b/net/sctp/chunk.c
@@ -66,7 +66,7 @@ static void sctp_datamsg_init(struct sctp_datamsg *msg)
 }
 
 /* Allocate and initialize datamsg. */
-SCTP_STATIC struct sctp_datamsg *sctp_datamsg_new(gfp_t gfp)
+static struct sctp_datamsg *sctp_datamsg_new(gfp_t gfp)
 {
         struct sctp_datamsg *msg;
         msg = kmalloc(sizeof(struct sctp_datamsg), gfp);
@@ -193,8 +193,9 @@ struct sctp_datamsg *sctp_datamsg_from_user(struct sctp_association *asoc,
                 msg->expires_at = jiffies +
                                     msecs_to_jiffies(sinfo->sinfo_timetolive);
                 msg->can_abandon = 1;
-                SCTP_DEBUG_PRINTK("%s: msg:%p expires_at: %ld jiffies:%ld\n",
-                                  __func__, msg, msg->expires_at, jiffies);
+
+                pr_debug("%s: msg:%p expires_at:%ld jiffies:%ld\n", __func__,
+                         msg, msg->expires_at, jiffies);
         }
 
         /* This is the biggest possible DATA chunk that can fit into
diff --git a/net/sctp/debug.c b/net/sctp/debug.c
index ec997cfe0a7e..f4998780d6df 100644
--- a/net/sctp/debug.c
+++ b/net/sctp/debug.c
@@ -47,10 +47,6 @@
 
 #include <net/sctp/sctp.h>
 
-#if SCTP_DEBUG
-int sctp_debug_flag = 1;        /* Initially enable DEBUG */
-#endif  /* SCTP_DEBUG */
-
 /* These are printable forms of Chunk ID's from section 3.1.  */
 static const char *const sctp_cid_tbl[SCTP_NUM_BASE_CHUNK_TYPES] = {
         "DATA",
diff --git a/net/sctp/endpointola.c b/net/sctp/endpointola.c
index 5fbd7bc6bb11..9e3d257de0e0 100644
--- a/net/sctp/endpointola.c
+++ b/net/sctp/endpointola.c
@@ -192,9 +192,10 @@ struct sctp_endpoint *sctp_endpoint_new(struct sock *sk, gfp_t gfp)
         struct sctp_endpoint *ep;
 
         /* Build a local endpoint. */
-        ep = t_new(struct sctp_endpoint, gfp);
+        ep = kzalloc(sizeof(*ep), gfp);
         if (!ep)
                 goto fail;
+
         if (!sctp_endpoint_init(ep, sk, gfp))
                 goto fail_init;
 
@@ -246,10 +247,12 @@ void sctp_endpoint_free(struct sctp_endpoint *ep)
 /* Final destructor for endpoint.  */
 static void sctp_endpoint_destroy(struct sctp_endpoint *ep)
 {
-        SCTP_ASSERT(ep->base.dead, "Endpoint is not dead", return);
+        struct sock *sk;
 
-        /* Free up the HMAC transform. */
-        crypto_free_hash(sctp_sk(ep->base.sk)->hmac);
+        if (unlikely(!ep->base.dead)) {
+                WARN(1, "Attempt to destroy undead endpoint %p!\n", ep);
+                return;
+        }
 
         /* Free the digest buffer */
         kfree(ep->digest);
@@ -270,13 +273,15 @@ static void sctp_endpoint_destroy(struct sctp_endpoint *ep)
 
         memset(ep->secret_key, 0, sizeof(ep->secret_key));
 
-        /* Remove and free the port */
-        if (sctp_sk(ep->base.sk)->bind_hash)
-                sctp_put_port(ep->base.sk);
-
         /* Give up our hold on the sock. */
-        if (ep->base.sk)
-                sock_put(ep->base.sk);
+        sk = ep->base.sk;
+        if (sk != NULL) {
+                /* Remove and free the port */
+                if (sctp_sk(sk)->bind_hash)
+                        sctp_put_port(sk);
+
+                sock_put(sk);
+        }
 
         kfree(ep);
         SCTP_DBG_OBJCNT_DEC(ep);
diff --git a/net/sctp/input.c b/net/sctp/input.c
index 4b2c83146aa7..3fa4d858c35a 100644
--- a/net/sctp/input.c
+++ b/net/sctp/input.c
@@ -454,8 +454,6 @@ void sctp_icmp_proto_unreachable(struct sock *sk,
                            struct sctp_association *asoc,
                            struct sctp_transport *t)
 {
-        SCTP_DEBUG_PRINTK("%s\n",  __func__);
-
         if (sock_owned_by_user(sk)) {
                 if (timer_pending(&t->proto_unreach_timer))
                         return;
@@ -464,10 +462,12 @@ void sctp_icmp_proto_unreachable(struct sock *sk,
                                                 jiffies + (HZ/20)))
                                 sctp_association_hold(asoc);
                 }
-                        
         } else {
                 struct net *net = sock_net(sk);
 
+                pr_debug("%s: unrecognized next header type "
+                         "encountered!\n", __func__);
+
                 if (del_timer(&t->proto_unreach_timer))
                         sctp_association_put(asoc);
 
@@ -589,7 +589,7 @@ void sctp_v4_err(struct sk_buff *skb, __u32 info)
         struct sctp_association *asoc = NULL;
         struct sctp_transport *transport;
         struct inet_sock *inet;
-        sk_buff_data_t saveip, savesctp;
+        __u16 saveip, savesctp;
         int err;
         struct net *net = dev_net(skb->dev);
 
@@ -903,11 +903,11 @@ hit:
 }
 
 /* Look up an association. BH-safe. */
-SCTP_STATIC
+static
 struct sctp_association *sctp_lookup_association(struct net *net,
                                                  const union sctp_addr *laddr,
                                                  const union sctp_addr *paddr,
-                                            struct sctp_transport **transportp)
+                                                 struct sctp_transport **transportp)
 {
         struct sctp_association *asoc;
 
diff --git a/net/sctp/inqueue.c b/net/sctp/inqueue.c
index 3221d073448c..cb25f040fed0 100644
--- a/net/sctp/inqueue.c
+++ b/net/sctp/inqueue.c
@@ -219,10 +219,10 @@ struct sctp_chunk *sctp_inq_pop(struct sctp_inq *queue)
                 chunk->end_of_packet = 1;
         }
 
-        SCTP_DEBUG_PRINTK("+++sctp_inq_pop+++ chunk %p[%s],"
-                          " length %d, skb->len %d\n",chunk,
-                          sctp_cname(SCTP_ST_CHUNK(chunk->chunk_hdr->type)),
-                          ntohs(chunk->chunk_hdr->length), chunk->skb->len);
+        pr_debug("+++sctp_inq_pop+++ chunk:%p[%s], length:%d, skb->len:%d\n",
+                 chunk, sctp_cname(SCTP_ST_CHUNK(chunk->chunk_hdr->type)),
+                 ntohs(chunk->chunk_hdr->length), chunk->skb->len);
+
         return chunk;
 }
 
@@ -238,4 +238,3 @@ void sctp_inq_set_th_handler(struct sctp_inq *q, work_func_t callback)
 {
         INIT_WORK(&q->immediate, callback);
 }
-
diff --git a/net/sctp/ipv6.c b/net/sctp/ipv6.c
index 391a245d5203..09ffcc912d23 100644
--- a/net/sctp/ipv6.c
+++ b/net/sctp/ipv6.c
@@ -145,15 +145,15 @@ static struct notifier_block sctp_inet6addr_notifier = {
 };
 
 /* ICMP error handler. */
-SCTP_STATIC void sctp_v6_err(struct sk_buff *skb, struct inet6_skb_parm *opt,
-                             u8 type, u8 code, int offset, __be32 info)
+static void sctp_v6_err(struct sk_buff *skb, struct inet6_skb_parm *opt,
+                        u8 type, u8 code, int offset, __be32 info)
 {
         struct inet6_dev *idev;
         struct sock *sk;
         struct sctp_association *asoc;
         struct sctp_transport *transport;
         struct ipv6_pinfo *np;
-        sk_buff_data_t saveip, savesctp;
+        __u16 saveip, savesctp;
         int err;
         struct net *net = dev_net(skb->dev);
 
@@ -239,9 +239,8 @@ static int sctp_v6_xmit(struct sk_buff *skb, struct sctp_transport *transport)
                 fl6.daddr = *rt0->addr;
         }
 
-        SCTP_DEBUG_PRINTK("%s: skb:%p, len:%d, src:%pI6 dst:%pI6\n",
-                          __func__, skb, skb->len,
-                          &fl6.saddr, &fl6.daddr);
+        pr_debug("%s: skb:%p, len:%d, src:%pI6 dst:%pI6\n", __func__, skb,
+                 skb->len, &fl6.saddr, &fl6.daddr);
 
         SCTP_INC_STATS(sock_net(sk), SCTP_MIB_OUTSCTPPACKS);
 
@@ -276,7 +275,7 @@ static void sctp_v6_get_dst(struct sctp_transport *t, union sctp_addr *saddr,
         if (ipv6_addr_type(&daddr->v6.sin6_addr) & IPV6_ADDR_LINKLOCAL)
                 fl6->flowi6_oif = daddr->v6.sin6_scope_id;
 
-        SCTP_DEBUG_PRINTK("%s: DST=%pI6 ", __func__, &fl6->daddr);
+        pr_debug("%s: dst=%pI6 ", __func__, &fl6->daddr);
 
         if (asoc)
                 fl6->fl6_sport = htons(asoc->base.bind_addr.port);
@@ -284,7 +283,8 @@ static void sctp_v6_get_dst(struct sctp_transport *t, union sctp_addr *saddr,
         if (saddr) {
                 fl6->saddr = saddr->v6.sin6_addr;
                 fl6->fl6_sport = saddr->v6.sin6_port;
-                SCTP_DEBUG_PRINTK("SRC=%pI6 - ", &fl6->saddr);
+
+                pr_debug("src=%pI6 - ", &fl6->saddr);
         }
 
         dst = ip6_dst_lookup_flow(sk, fl6, NULL, false);
@@ -348,13 +348,16 @@ static void sctp_v6_get_dst(struct sctp_transport *t, union sctp_addr *saddr,
 out:
         if (!IS_ERR_OR_NULL(dst)) {
                 struct rt6_info *rt;
+
                 rt = (struct rt6_info *)dst;
                 t->dst = dst;
-                SCTP_DEBUG_PRINTK("rt6_dst:%pI6 rt6_src:%pI6\n",
-                        &rt->rt6i_dst.addr, &fl6->saddr);
+
+                pr_debug("rt6_dst:%pI6 rt6_src:%pI6\n", &rt->rt6i_dst.addr,
+                         &fl6->saddr);
         } else {
                 t->dst = NULL;
-                SCTP_DEBUG_PRINTK("NO ROUTE\n");
+
+                pr_debug("no route\n");
         }
 }
 
@@ -377,7 +380,7 @@ static void sctp_v6_get_saddr(struct sctp_sock *sk,
         struct flowi6 *fl6 = &fl->u.ip6;
         union sctp_addr *saddr = &t->saddr;
 
-        SCTP_DEBUG_PRINTK("%s: asoc:%p dst:%p\n", __func__, t->asoc, t->dst);
+        pr_debug("%s: asoc:%p dst:%p\n", __func__, t->asoc, t->dst);
 
         if (t->dst) {
                 saddr->v6.sin6_family = AF_INET6;
@@ -402,7 +405,7 @@ static void sctp_v6_copy_addrlist(struct list_head *addrlist,
         read_lock_bh(&in6_dev->lock);
         list_for_each_entry(ifp, &in6_dev->addr_list, if_list) {
                 /* Add the address to the local list.  */
-                addr = t_new(struct sctp_sockaddr_entry, GFP_ATOMIC);
+                addr = kzalloc(sizeof(*addr), GFP_ATOMIC);
                 if (addr) {
                         addr->a.v6.sin6_family = AF_INET6;
                         addr->a.v6.sin6_port = 0;
diff --git a/net/sctp/output.c b/net/sctp/output.c
index bbef4a7a9b56..a46d1eb41762 100644
--- a/net/sctp/output.c
+++ b/net/sctp/output.c
@@ -93,8 +93,7 @@ struct sctp_packet *sctp_packet_config(struct sctp_packet *packet,
 {
         struct sctp_chunk *chunk = NULL;
 
-        SCTP_DEBUG_PRINTK("%s: packet:%p vtag:0x%x\n", __func__,
-                          packet, vtag);
+        pr_debug("%s: packet:%p vtag:0x%x\n", __func__, packet, vtag);
 
         packet->vtag = vtag;
 
@@ -119,8 +118,7 @@ struct sctp_packet *sctp_packet_init(struct sctp_packet *packet,
         struct sctp_association *asoc = transport->asoc;
         size_t overhead;
 
-        SCTP_DEBUG_PRINTK("%s: packet:%p transport:%p\n", __func__,
-                          packet, transport);
+        pr_debug("%s: packet:%p transport:%p\n", __func__, packet, transport);
 
         packet->transport = transport;
         packet->source_port = sport;
@@ -145,7 +143,7 @@ void sctp_packet_free(struct sctp_packet *packet)
 {
         struct sctp_chunk *chunk, *tmp;
 
-        SCTP_DEBUG_PRINTK("%s: packet:%p\n", __func__, packet);
+        pr_debug("%s: packet:%p\n", __func__, packet);
 
         list_for_each_entry_safe(chunk, tmp, &packet->chunk_list, list) {
                 list_del_init(&chunk->list);
@@ -167,8 +165,7 @@ sctp_xmit_t sctp_packet_transmit_chunk(struct sctp_packet *packet,
         sctp_xmit_t retval;
         int error = 0;
 
-        SCTP_DEBUG_PRINTK("%s: packet:%p chunk:%p\n", __func__,
-                          packet, chunk);
+        pr_debug("%s: packet:%p chunk:%p\n", __func__, packet, chunk);
 
         switch ((retval = (sctp_packet_append_chunk(packet, chunk)))) {
         case SCTP_XMIT_PMTU_FULL:
@@ -334,8 +331,7 @@ sctp_xmit_t sctp_packet_append_chunk(struct sctp_packet *packet,
 {
         sctp_xmit_t retval = SCTP_XMIT_OK;
 
-        SCTP_DEBUG_PRINTK("%s: packet:%p chunk:%p\n", __func__, packet,
-                          chunk);
+        pr_debug("%s: packet:%p chunk:%p\n", __func__, packet, chunk);
 
         /* Data chunks are special.  Before seeing what else we can
          * bundle into this packet, check to see if we are allowed to
@@ -402,7 +398,7 @@ int sctp_packet_transmit(struct sctp_packet *packet)
         unsigned char *auth = NULL;     /* pointer to auth in skb data */
         __u32 cksum_buf_len = sizeof(struct sctphdr);
 
-        SCTP_DEBUG_PRINTK("%s: packet:%p\n", __func__, packet);
+        pr_debug("%s: packet:%p\n", __func__, packet);
 
         /* Do NOT generate a chunkless packet. */
         if (list_empty(&packet->chunk_list))
@@ -472,7 +468,9 @@ int sctp_packet_transmit(struct sctp_packet *packet)
          *
          * [This whole comment explains WORD_ROUND() below.]
          */
-        SCTP_DEBUG_PRINTK("***sctp_transmit_packet***\n");
+
+        pr_debug("***sctp_transmit_packet***\n");
+
         list_for_each_entry_safe(chunk, tmp, &packet->chunk_list, list) {
                 list_del_init(&chunk->list);
                 if (sctp_chunk_is_data(chunk)) {
@@ -505,16 +503,13 @@ int sctp_packet_transmit(struct sctp_packet *packet)
                 memcpy(skb_put(nskb, chunk->skb->len),
                                chunk->skb->data, chunk->skb->len);
 
-                SCTP_DEBUG_PRINTK("%s %p[%s] %s 0x%x, %s %d, %s %d, %s %d\n",
-                                  "*** Chunk", chunk,
-                                  sctp_cname(SCTP_ST_CHUNK(
-                                          chunk->chunk_hdr->type)),
-                                  chunk->has_tsn ? "TSN" : "No TSN",
-                                  chunk->has_tsn ?
-                                  ntohl(chunk->subh.data_hdr->tsn) : 0,
-                                  "length", ntohs(chunk->chunk_hdr->length),
-                                  "chunk->skb->len", chunk->skb->len,
-                                  "rtt_in_progress", chunk->rtt_in_progress);
+                pr_debug("*** Chunk:%p[%s] %s 0x%x, length:%d, chunk->skb->len:%d, "
+                         "rtt_in_progress:%d\n", chunk,
+                         sctp_cname(SCTP_ST_CHUNK(chunk->chunk_hdr->type)),
+                         chunk->has_tsn ? "TSN" : "No TSN",
+                         chunk->has_tsn ? ntohl(chunk->subh.data_hdr->tsn) : 0,
+                         ntohs(chunk->chunk_hdr->length), chunk->skb->len,
+                         chunk->rtt_in_progress);
 
                 /*
                  * If this is a control chunk, this is our last
@@ -606,8 +601,7 @@ int sctp_packet_transmit(struct sctp_packet *packet)
                 }
         }
 
-        SCTP_DEBUG_PRINTK("***sctp_transmit_packet*** skb len %d\n",
-                          nskb->len);
+        pr_debug("***sctp_transmit_packet*** skb->len:%d\n", nskb->len);
 
         nskb->local_df = packet->ipfragok;
         (*tp->af_specific->sctp_xmit)(nskb, tp);
diff --git a/net/sctp/outqueue.c b/net/sctp/outqueue.c
index be35e2dbcc9a..ef9e2bbc0f2f 100644
--- a/net/sctp/outqueue.c
+++ b/net/sctp/outqueue.c
@@ -299,10 +299,10 @@ int sctp_outq_tail(struct sctp_outq *q, struct sctp_chunk *chunk)
         struct net *net = sock_net(q->asoc->base.sk);
         int error = 0;
 
-        SCTP_DEBUG_PRINTK("sctp_outq_tail(%p, %p[%s])\n",
-                          q, chunk, chunk && chunk->chunk_hdr ?
-                          sctp_cname(SCTP_ST_CHUNK(chunk->chunk_hdr->type))
-                          : "Illegal Chunk");
+        pr_debug("%s: outq:%p, chunk:%p[%s]\n", __func__, q, chunk,
+                 chunk && chunk->chunk_hdr ?
+                 sctp_cname(SCTP_ST_CHUNK(chunk->chunk_hdr->type)) :
+                 "illegal chunk");
 
         /* If it is data, queue it up, otherwise, send it
          * immediately.
@@ -328,10 +328,10 @@ int sctp_outq_tail(struct sctp_outq *q, struct sctp_chunk *chunk)
                         break;
 
                 default:
-                        SCTP_DEBUG_PRINTK("outqueueing (%p, %p[%s])\n",
-                          q, chunk, chunk && chunk->chunk_hdr ?
-                          sctp_cname(SCTP_ST_CHUNK(chunk->chunk_hdr->type))
-                          : "Illegal Chunk");
+                        pr_debug("%s: outqueueing: outq:%p, chunk:%p[%s])\n",
+                                 __func__, q, chunk, chunk && chunk->chunk_hdr ?
+                                 sctp_cname(SCTP_ST_CHUNK(chunk->chunk_hdr->type)) :
+                                 "illegal chunk");
 
                         sctp_outq_tail_data(q, chunk);
                         if (chunk->chunk_hdr->flags & SCTP_DATA_UNORDERED)
@@ -460,14 +460,10 @@ void sctp_retransmit_mark(struct sctp_outq *q,
                 }
         }
 
-        SCTP_DEBUG_PRINTK("%s: transport: %p, reason: %d, "
-                          "cwnd: %d, ssthresh: %d, flight_size: %d, "
-                          "pba: %d\n", __func__,
-                          transport, reason,
-                          transport->cwnd, transport->ssthresh,
-                          transport->flight_size,
-                          transport->partial_bytes_acked);
-
+        pr_debug("%s: transport:%p, reason:%d, cwnd:%d, ssthresh:%d, "
+                 "flight_size:%d, pba:%d\n", __func__, transport, reason,
+                 transport->cwnd, transport->ssthresh, transport->flight_size,
+                 transport->partial_bytes_acked);
 }
 
 /* Mark all the eligible packets on a transport for retransmission and force
@@ -1014,19 +1010,13 @@ static int sctp_outq_flush(struct sctp_outq *q, int rtx_timeout)
                                 sctp_transport_burst_limited(transport);
                         }
 
-                        SCTP_DEBUG_PRINTK("sctp_outq_flush(%p, %p[%s]), ",
-                                          q, chunk,
-                                          chunk && chunk->chunk_hdr ?
-                                          sctp_cname(SCTP_ST_CHUNK(
-                                                  chunk->chunk_hdr->type))
-                                          : "Illegal Chunk");
-
-                        SCTP_DEBUG_PRINTK("TX TSN 0x%x skb->head "
-                                        "%p skb->users %d.\n",
-                                        ntohl(chunk->subh.data_hdr->tsn),
-                                        chunk->skb ?chunk->skb->head : NULL,
-                                        chunk->skb ?
-                                        atomic_read(&chunk->skb->users) : -1);
+                        pr_debug("%s: outq:%p, chunk:%p[%s], tx-tsn:0x%x skb->head:%p "
+                                 "skb->users:%d\n",
+                                 __func__, q, chunk, chunk && chunk->chunk_hdr ?
+                                 sctp_cname(SCTP_ST_CHUNK(chunk->chunk_hdr->type)) :
+                                 "illegal chunk", ntohl(chunk->subh.data_hdr->tsn),
+                                 chunk->skb ? chunk->skb->head : NULL, chunk->skb ?
+                                 atomic_read(&chunk->skb->users) : -1);
 
                         /* Add the chunk to the packet.  */
                         status = sctp_packet_transmit_chunk(packet, chunk, 0);
@@ -1038,10 +1028,10 @@ static int sctp_outq_flush(struct sctp_outq *q, int rtx_timeout)
                                 /* We could not append this chunk, so put
                                  * the chunk back on the output queue.
                                  */
-                                SCTP_DEBUG_PRINTK("sctp_outq_flush: could "
-                                        "not transmit TSN: 0x%x, status: %d\n",
-                                        ntohl(chunk->subh.data_hdr->tsn),
-                                        status);
+                                pr_debug("%s: could not transmit tsn:0x%x, status:%d\n",
+                                         __func__, ntohl(chunk->subh.data_hdr->tsn),
+                                         status);
+
                                 sctp_outq_head_data(q, chunk);
                                 goto sctp_flush_out;
                                 break;
@@ -1284,11 +1274,10 @@ int sctp_outq_sack(struct sctp_outq *q, struct sctp_chunk *chunk)
 
         sctp_generate_fwdtsn(q, sack_ctsn);
 
-        SCTP_DEBUG_PRINTK("%s: sack Cumulative TSN Ack is 0x%x.\n",
-                          __func__, sack_ctsn);
-        SCTP_DEBUG_PRINTK("%s: Cumulative TSN Ack of association, "
-                          "%p is 0x%x. Adv peer ack point: 0x%x\n",
-                          __func__, asoc, ctsn, asoc->adv_peer_ack_point);
+        pr_debug("%s: sack cumulative tsn ack:0x%x\n", __func__, sack_ctsn);
+        pr_debug("%s: cumulative tsn ack of assoc:%p is 0x%x, "
+                 "advertised peer ack point:0x%x\n", __func__, asoc, ctsn,
+                 asoc->adv_peer_ack_point);
 
         /* See if all chunks are acked.
          * Make sure the empty queue handler will get run later.
@@ -1304,7 +1293,7 @@ int sctp_outq_sack(struct sctp_outq *q, struct sctp_chunk *chunk)
                         goto finish;
         }
 
-        SCTP_DEBUG_PRINTK("sack queue is empty.\n");
+        pr_debug("%s: sack queue is empty\n", __func__);
 finish:
         return q->empty;
 }
@@ -1345,21 +1334,7 @@ static void sctp_check_transmitted(struct sctp_outq *q,
         __u8 restart_timer = 0;
         int bytes_acked = 0;
         int migrate_bytes = 0;
-
-        /* These state variables are for coherent debug output. --xguo */
-
-#if SCTP_DEBUG
-        __u32 dbg_ack_tsn = 0;  /* An ACKed TSN range starts here... */
-        __u32 dbg_last_ack_tsn = 0;  /* ...and finishes here.        */
-        __u32 dbg_kept_tsn = 0; /* An un-ACKed range starts here...  */
-        __u32 dbg_last_kept_tsn = 0; /* ...and finishes here.        */
-
-        /* 0 : The last TSN was ACKed.
-         * 1 : The last TSN was NOT ACKed (i.e. KEPT).
-         * -1: We need to initialize.
-         */
-        int dbg_prt_state = -1;
-#endif /* SCTP_DEBUG */
+        bool forward_progress = false;
 
         sack_ctsn = ntohl(sack->cum_tsn_ack);
 
@@ -1426,6 +1401,7 @@ static void sctp_check_transmitted(struct sctp_outq *q,
                                 bytes_acked += sctp_data_size(tchunk);
                                 if (!tchunk->transport)
                                         migrate_bytes += sctp_data_size(tchunk);
+                                forward_progress = true;
                         }
 
                         if (TSN_lte(tsn, sack_ctsn)) {
@@ -1439,6 +1415,7 @@ static void sctp_check_transmitted(struct sctp_outq *q,
                                  * current RTO.
                                  */
                                 restart_timer = 1;
+                                forward_progress = true;
 
                                 if (!tchunk->tsn_gap_acked) {
                                         /*
@@ -1482,57 +1459,11 @@ static void sctp_check_transmitted(struct sctp_outq *q,
                                  */
                                 list_add_tail(lchunk, &tlist);
                         }
-
-#if SCTP_DEBUG
-                        switch (dbg_prt_state) {
-                        case 0: /* last TSN was ACKed */
-                                if (dbg_last_ack_tsn + 1 == tsn) {
-                                        /* This TSN belongs to the
-                                         * current ACK range.
-                                         */
-                                        break;
-                                }
-
-                                if (dbg_last_ack_tsn != dbg_ack_tsn) {
-                                        /* Display the end of the
-                                         * current range.
-                                         */
-                                        SCTP_DEBUG_PRINTK_CONT("-%08x",
-                                                               dbg_last_ack_tsn);
-                                }
-
-                                /* Start a new range.  */
-                                SCTP_DEBUG_PRINTK_CONT(",%08x", tsn);
-                                dbg_ack_tsn = tsn;
-                                break;
-
-                        case 1: /* The last TSN was NOT ACKed. */
-                                if (dbg_last_kept_tsn != dbg_kept_tsn) {
-                                        /* Display the end of current range. */
-                                        SCTP_DEBUG_PRINTK_CONT("-%08x",
-                                                               dbg_last_kept_tsn);
-                                }
-
-                                SCTP_DEBUG_PRINTK_CONT("\n");
-
-                                /* FALL THROUGH... */
-                        default:
-                                /* This is the first-ever TSN we examined.  */
-                                /* Start a new range of ACK-ed TSNs.  */
-                                SCTP_DEBUG_PRINTK("ACKed: %08x", tsn);
-                                dbg_prt_state = 0;
-                                dbg_ack_tsn = tsn;
-                        }
-
-                        dbg_last_ack_tsn = tsn;
-#endif /* SCTP_DEBUG */
-
                 } else {
                         if (tchunk->tsn_gap_acked) {
-                                SCTP_DEBUG_PRINTK("%s: Receiver reneged on "
-                                                  "data TSN: 0x%x\n",
-                                                  __func__,
-                                                  tsn);
+                                pr_debug("%s: receiver reneged on data TSN:0x%x\n",
+                                         __func__, tsn);
+
                                 tchunk->tsn_gap_acked = 0;
 
                                 if (tchunk->transport)
@@ -1551,59 +1482,9 @@ static void sctp_check_transmitted(struct sctp_outq *q,
                         }
 
                         list_add_tail(lchunk, &tlist);
-
-#if SCTP_DEBUG
-                        /* See the above comments on ACK-ed TSNs. */
-                        switch (dbg_prt_state) {
-                        case 1:
-                                if (dbg_last_kept_tsn + 1 == tsn)
-                                        break;
-
-                                if (dbg_last_kept_tsn != dbg_kept_tsn)
-                                        SCTP_DEBUG_PRINTK_CONT("-%08x",
-                                                               dbg_last_kept_tsn);
-
-                                SCTP_DEBUG_PRINTK_CONT(",%08x", tsn);
-                                dbg_kept_tsn = tsn;
-                                break;
-
-                        case 0:
-                                if (dbg_last_ack_tsn != dbg_ack_tsn)
-                                        SCTP_DEBUG_PRINTK_CONT("-%08x",
-                                                               dbg_last_ack_tsn);
-                                SCTP_DEBUG_PRINTK_CONT("\n");
-
-                                /* FALL THROUGH... */
-                        default:
-                                SCTP_DEBUG_PRINTK("KEPT: %08x",tsn);
-                                dbg_prt_state = 1;
-                                dbg_kept_tsn = tsn;
-                        }
-
-                        dbg_last_kept_tsn = tsn;
-#endif /* SCTP_DEBUG */
                 }
         }
 
-#if SCTP_DEBUG
-        /* Finish off the last range, displaying its ending TSN.  */
-        switch (dbg_prt_state) {
-        case 0:
-                if (dbg_last_ack_tsn != dbg_ack_tsn) {
-                        SCTP_DEBUG_PRINTK_CONT("-%08x\n", dbg_last_ack_tsn);
-                } else {
-                        SCTP_DEBUG_PRINTK_CONT("\n");
-                }
-        break;
-
-        case 1:
-                if (dbg_last_kept_tsn != dbg_kept_tsn) {
-                        SCTP_DEBUG_PRINTK_CONT("-%08x\n", dbg_last_kept_tsn);
-                } else {
-                        SCTP_DEBUG_PRINTK_CONT("\n");
-                }
-        }
-#endif /* SCTP_DEBUG */
         if (transport) {
                 if (bytes_acked) {
                         struct sctp_association *asoc = transport->asoc;
@@ -1625,6 +1506,7 @@ static void sctp_check_transmitted(struct sctp_outq *q,
                          */
                         transport->error_count = 0;
                         transport->asoc->overall_error_count = 0;
+                        forward_progress = true;
 
                         /*
                          * While in SHUTDOWN PENDING, we may have started
@@ -1676,9 +1558,9 @@ static void sctp_check_transmitted(struct sctp_outq *q,
                             !list_empty(&tlist) &&
                             (sack_ctsn+2 == q->asoc->next_tsn) &&
                             q->asoc->state < SCTP_STATE_SHUTDOWN_PENDING) {
-                                SCTP_DEBUG_PRINTK("%s: SACK received for zero "
-                                                  "window probe: %u\n",
-                                                  __func__, sack_ctsn);
+                                pr_debug("%s: sack received for zero window "
+                                         "probe:%u\n", __func__, sack_ctsn);
+
                                 q->asoc->overall_error_count = 0;
                                 transport->error_count = 0;
                         }
@@ -1698,6 +1580,11 @@ static void sctp_check_transmitted(struct sctp_outq *q,
                                        jiffies + transport->rto))
                                 sctp_transport_hold(transport);
                 }
+
+                if (forward_progress) {
+                        if (transport->dst)
+                                dst_confirm(transport->dst);
+                }
         }
 
         list_splice(&tlist, transmitted_queue);
@@ -1739,10 +1626,8 @@ static void sctp_mark_missing(struct sctp_outq *q,
                                                 count_of_newacks, tsn)) {
                                 chunk->tsn_missing_report++;
 
-                                SCTP_DEBUG_PRINTK(
-                                        "%s: TSN 0x%x missing counter: %d\n",
-                                        __func__, tsn,
-                                        chunk->tsn_missing_report);
+                                pr_debug("%s: tsn:0x%x missing counter:%d\n",
+                                         __func__, tsn, chunk->tsn_missing_report);
                         }
                 }
                 /*
@@ -1762,11 +1647,10 @@ static void sctp_mark_missing(struct sctp_outq *q,
                 if (do_fast_retransmit)
                         sctp_retransmit(q, transport, SCTP_RTXR_FAST_RTX);
 
-                SCTP_DEBUG_PRINTK("%s: transport: %p, cwnd: %d, "
-                                  "ssthresh: %d, flight_size: %d, pba: %d\n",
-                                  __func__, transport, transport->cwnd,
-                                  transport->ssthresh, transport->flight_size,
-                                  transport->partial_bytes_acked);
+                pr_debug("%s: transport:%p, cwnd:%d, ssthresh:%d, "
+                         "flight_size:%d, pba:%d\n",  __func__, transport,
+                         transport->cwnd, transport->ssthresh,
+                         transport->flight_size, transport->partial_bytes_acked);
         }
 }
 
diff --git a/net/sctp/proc.c b/net/sctp/proc.c
index 4e45ee35d0db..62526c477050 100644
--- a/net/sctp/proc.c
+++ b/net/sctp/proc.c
@@ -134,9 +134,15 @@ static void sctp_seq_dump_local_addrs(struct seq_file *seq, struct sctp_ep_commo
         struct sctp_af *af;
 
         if (epb->type == SCTP_EP_TYPE_ASSOCIATION) {
-            asoc = sctp_assoc(epb);
-            peer = asoc->peer.primary_path;
-            primary = &peer->saddr;
+                asoc = sctp_assoc(epb);
+
+                peer = asoc->peer.primary_path;
+                if (unlikely(peer == NULL)) {
+                        WARN(1, "Association %p with NULL primary path!\n", asoc);
+                        return;
+                }
+
+                primary = &peer->saddr;
         }
 
         rcu_read_lock();
diff --git a/net/sctp/protocol.c b/net/sctp/protocol.c
index eaee00c61139..4a17494d736c 100644
--- a/net/sctp/protocol.c
+++ b/net/sctp/protocol.c
@@ -153,7 +153,7 @@ static void sctp_v4_copy_addrlist(struct list_head *addrlist,
 
         for (ifa = in_dev->ifa_list; ifa; ifa = ifa->ifa_next) {
                 /* Add the address to the local list.  */
-                addr = t_new(struct sctp_sockaddr_entry, GFP_ATOMIC);
+                addr = kzalloc(sizeof(*addr), GFP_ATOMIC);
                 if (addr) {
                         addr->a.v4.sin_family = AF_INET;
                         addr->a.v4.sin_port = 0;
@@ -178,7 +178,7 @@ static void sctp_get_local_addr_list(struct net *net)
 
         rcu_read_lock();
         for_each_netdev_rcu(net, dev) {
-                __list_for_each(pos, &sctp_address_families) {
+                list_for_each(pos, &sctp_address_families) {
                         af = list_entry(pos, struct sctp_af, list);
                         af->copy_addrlist(&net->sctp.local_addr_list, dev);
                 }
@@ -451,8 +451,8 @@ static void sctp_v4_get_dst(struct sctp_transport *t, union sctp_addr *saddr,
                 fl4->fl4_sport = saddr->v4.sin_port;
         }
 
-        SCTP_DEBUG_PRINTK("%s: DST:%pI4, SRC:%pI4 - ",
-                          __func__, &fl4->daddr, &fl4->saddr);
+        pr_debug("%s: dst:%pI4, src:%pI4 - ", __func__, &fl4->daddr,
+                 &fl4->saddr);
 
         rt = ip_route_output_key(sock_net(sk), fl4);
         if (!IS_ERR(rt))
@@ -513,10 +513,10 @@ out_unlock:
 out:
         t->dst = dst;
         if (dst)
-                SCTP_DEBUG_PRINTK("rt_dst:%pI4, rt_src:%pI4\n",
-                                  &fl4->daddr, &fl4->saddr);
+                pr_debug("rt_dst:%pI4, rt_src:%pI4\n",
+                         &fl4->daddr, &fl4->saddr);
         else
-                SCTP_DEBUG_PRINTK("NO ROUTE\n");
+                pr_debug("no route\n");
 }
 
 /* For v4, the source address is cached in the route entry(dst). So no need
@@ -604,9 +604,9 @@ static void sctp_addr_wq_timeout_handler(unsigned long arg)
         spin_lock_bh(&net->sctp.addr_wq_lock);
 
         list_for_each_entry_safe(addrw, temp, &net->sctp.addr_waitq, list) {
-                SCTP_DEBUG_PRINTK_IPADDR("sctp_addrwq_timo_handler: the first ent in wq %p is ",
-                    " for cmd %d at entry %p\n", &net->sctp.addr_waitq, &addrw->a, addrw->state,
-                    addrw);
+                pr_debug("%s: the first ent in wq:%p is addr:%pISc for cmd:%d at "
+                         "entry:%p\n", __func__, &net->sctp.addr_waitq, &addrw->a.sa,
+                         addrw->state, addrw);
 
 #if IS_ENABLED(CONFIG_IPV6)
                 /* Now we send an ASCONF for each association */
@@ -623,8 +623,10 @@ static void sctp_addr_wq_timeout_handler(unsigned long arg)
                             addrw->state == SCTP_ADDR_NEW) {
                                 unsigned long timeo_val;
 
-                                SCTP_DEBUG_PRINTK("sctp_timo_handler: this is on DAD, trying %d sec later\n",
-                                    SCTP_ADDRESS_TICK_DELAY);
+                                pr_debug("%s: this is on DAD, trying %d sec "
+                                         "later\n", __func__,
+                                         SCTP_ADDRESS_TICK_DELAY);
+
                                 timeo_val = jiffies;
                                 timeo_val += msecs_to_jiffies(SCTP_ADDRESS_TICK_DELAY);
                                 mod_timer(&net->sctp.addr_wq_timer, timeo_val);
@@ -641,7 +643,7 @@ static void sctp_addr_wq_timeout_handler(unsigned long arg)
                                 continue;
                         sctp_bh_lock_sock(sk);
                         if (sctp_asconf_mgmt(sp, addrw) < 0)
-                                SCTP_DEBUG_PRINTK("sctp_addrwq_timo_handler: sctp_asconf_mgmt failed\n");
+                                pr_debug("%s: sctp_asconf_mgmt failed\n", __func__);
                         sctp_bh_unlock_sock(sk);
                 }
 #if IS_ENABLED(CONFIG_IPV6)
@@ -707,9 +709,10 @@ void sctp_addr_wq_mgmt(struct net *net, struct sctp_sockaddr_entry *addr, int cm
         addrw = sctp_addr_wq_lookup(net, addr);
         if (addrw) {
                 if (addrw->state != cmd) {
-                        SCTP_DEBUG_PRINTK_IPADDR("sctp_addr_wq_mgmt offsets existing entry for %d ",
-                            " in wq %p\n", addrw->state, &addrw->a,
-                            &net->sctp.addr_waitq);
+                        pr_debug("%s: offsets existing entry for %d, addr:%pISc "
+                                 "in wq:%p\n", __func__, addrw->state, &addrw->a.sa,
+                                 &net->sctp.addr_waitq);
+
                         list_del(&addrw->list);
                         kfree(addrw);
                 }
@@ -725,8 +728,9 @@ void sctp_addr_wq_mgmt(struct net *net, struct sctp_sockaddr_entry *addr, int cm
         }
         addrw->state = cmd;
         list_add_tail(&addrw->list, &net->sctp.addr_waitq);
-        SCTP_DEBUG_PRINTK_IPADDR("sctp_addr_wq_mgmt add new entry for cmd:%d ",
-            " in wq %p\n", addrw->state, &addrw->a, &net->sctp.addr_waitq);
+
+        pr_debug("%s: add new entry for cmd:%d, addr:%pISc in wq:%p\n",
+                 __func__, addrw->state, &addrw->a.sa, &net->sctp.addr_waitq);
 
         if (!timer_pending(&net->sctp.addr_wq_timer)) {
                 timeo_val = jiffies;
@@ -952,15 +956,14 @@ static inline int sctp_v4_xmit(struct sk_buff *skb,
 {
         struct inet_sock *inet = inet_sk(skb->sk);
 
-        SCTP_DEBUG_PRINTK("%s: skb:%p, len:%d, src:%pI4, dst:%pI4\n",
-                          __func__, skb, skb->len,
-                          &transport->fl.u.ip4.saddr,
-                          &transport->fl.u.ip4.daddr);
+        pr_debug("%s: skb:%p, len:%d, src:%pI4, dst:%pI4\n", __func__, skb,
+                 skb->len, &transport->fl.u.ip4.saddr, &transport->fl.u.ip4.daddr);
 
         inet->pmtudisc = transport->param_flags & SPP_PMTUD_ENABLE ?
                          IP_PMTUDISC_DO : IP_PMTUDISC_DONT;
 
         SCTP_INC_STATS(sock_net(&inet->sk), SCTP_MIB_OUTSCTPPACKS);
+
         return ip_queue_xmit(skb, &transport->fl);
 }
 
@@ -1312,7 +1315,7 @@ static struct pernet_operations sctp_net_ops = {
 };
 
 /* Initialize the universe into something sensible.  */
-SCTP_STATIC __init int sctp_init(void)
+static __init int sctp_init(void)
 {
         int i;
         int status = -EINVAL;
@@ -1321,9 +1324,8 @@ SCTP_STATIC __init int sctp_init(void)
         int max_share;
         int order;
 
-        /* SCTP_DEBUG sanity check. */
-        if (!sctp_sanity_check())
-                goto out;
+        BUILD_BUG_ON(sizeof(struct sctp_ulpevent) >
+                     sizeof(((struct sk_buff *) 0)->cb));
 
         /* Allocate bind_bucket and chunk caches. */
         status = -ENOBUFS;
@@ -1499,7 +1501,7 @@ err_chunk_cachep:
 }
 
 /* Exit handler for the SCTP protocol.  */
-SCTP_STATIC __exit void sctp_exit(void)
+static __exit void sctp_exit(void)
 {
         /* BUG.  This should probably do something useful like clean
          * up all the remaining associations and all that memory.
diff --git a/net/sctp/sm_make_chunk.c b/net/sctp/sm_make_chunk.c
index cf579e71cff0..362ae6e2fd93 100644
--- a/net/sctp/sm_make_chunk.c
+++ b/net/sctp/sm_make_chunk.c
@@ -68,9 +68,8 @@
 #include <net/sctp/sctp.h>
 #include <net/sctp/sm.h>
 
-SCTP_STATIC
-struct sctp_chunk *sctp_make_chunk(const struct sctp_association *asoc,
-                                   __u8 type, __u8 flags, int paylen);
+static struct sctp_chunk *sctp_make_chunk(const struct sctp_association *asoc,
+                                          __u8 type, __u8 flags, int paylen);
 static sctp_cookie_param_t *sctp_pack_cookie(const struct sctp_endpoint *ep,
                                         const struct sctp_association *asoc,
                                         const struct sctp_chunk *init_chunk,
@@ -742,7 +741,8 @@ struct sctp_chunk *sctp_make_sack(const struct sctp_association *asoc)
 
         memset(gabs, 0, sizeof(gabs));
         ctsn = sctp_tsnmap_get_ctsn(map);
-        SCTP_DEBUG_PRINTK("sackCTSNAck sent:  0x%x.\n", ctsn);
+
+        pr_debug("%s: sackCTSNAck sent:0x%x\n", __func__, ctsn);
 
         /* How much room is needed in the chunk? */
         num_gabs = sctp_tsnmap_num_gabs(map, gabs);
@@ -1288,10 +1288,8 @@ struct sctp_chunk *sctp_chunkify(struct sk_buff *skb,
 
         if (!retval)
                 goto nodata;
-
-        if (!sk) {
-                SCTP_DEBUG_PRINTK("chunkifying skb %p w/o an sk\n", skb);
-        }
+        if (!sk)
+                pr_debug("%s: chunkifying skb:%p w/o an sk\n", __func__, skb);
 
         INIT_LIST_HEAD(&retval->list);
         retval->skb             = skb;
@@ -1353,9 +1351,8 @@ const union sctp_addr *sctp_source(const struct sctp_chunk *chunk)
 /* Create a new chunk, setting the type and flags headers from the
  * arguments, reserving enough space for a 'paylen' byte payload.
  */
-SCTP_STATIC
-struct sctp_chunk *sctp_make_chunk(const struct sctp_association *asoc,
-                                   __u8 type, __u8 flags, int paylen)
+static struct sctp_chunk *sctp_make_chunk(const struct sctp_association *asoc,
+                                          __u8 type, __u8 flags, int paylen)
 {
         struct sctp_chunk *retval;
         sctp_chunkhdr_t *chunk_hdr;
@@ -1632,8 +1629,8 @@ static sctp_cookie_param_t *sctp_pack_cookie(const struct sctp_endpoint *ep,
         cookie->c.adaptation_ind = asoc->peer.adaptation_ind;
 
         /* Set an expiration time for the cookie.  */
-        do_gettimeofday(&cookie->c.expiration);
-        TIMEVAL_ADD(asoc->cookie_life, cookie->c.expiration);
+        cookie->c.expiration = ktime_add(asoc->cookie_life,
+                                         ktime_get());
 
         /* Copy the peer's init packet.  */
         memcpy(&cookie->c.peer_init[0], init_chunk->chunk_hdr,
@@ -1682,7 +1679,7 @@ struct sctp_association *sctp_unpack_cookie(
         unsigned int len;
         sctp_scope_t scope;
         struct sk_buff *skb = chunk->skb;
-        struct timeval tv;
+        ktime_t kt;
         struct hash_desc desc;
 
         /* Header size is static data prior to the actual cookie, including
@@ -1759,11 +1756,11 @@ no_hmac:
          * down the new association establishment instead of every packet.
          */
         if (sock_flag(ep->base.sk, SOCK_TIMESTAMP))
-                skb_get_timestamp(skb, &tv);
+                kt = skb_get_ktime(skb);
         else
-                do_gettimeofday(&tv);
+                kt = ktime_get();
 
-        if (!asoc && tv_lt(bear_cookie->expiration, tv)) {
+        if (!asoc && ktime_compare(bear_cookie->expiration, kt) < 0) {
                 /*
                  * Section 3.3.10.3 Stale Cookie Error (3)
                  *
@@ -1775,9 +1772,7 @@ no_hmac:
                 len = ntohs(chunk->chunk_hdr->length);
                 *errp = sctp_make_op_error_space(asoc, chunk, len);
                 if (*errp) {
-                        suseconds_t usecs = (tv.tv_sec -
-                                bear_cookie->expiration.tv_sec) * 1000000L +
-                                tv.tv_usec - bear_cookie->expiration.tv_usec;
+                        suseconds_t usecs = ktime_to_us(ktime_sub(kt, bear_cookie->expiration));
                         __be32 n = htonl(usecs);
 
                         sctp_init_cause(*errp, SCTP_ERROR_STALE_COOKIE,
@@ -2195,8 +2190,9 @@ static sctp_ierror_t sctp_verify_param(struct net *net,
                 break;
 fallthrough:
         default:
-                SCTP_DEBUG_PRINTK("Unrecognized param: %d for chunk %d.\n",
-                                ntohs(param.p->type), cid);
+                pr_debug("%s: unrecognized param:%d for chunk:%d\n",
+                         __func__, ntohs(param.p->type), cid);
+
                 retval = sctp_process_unk_param(asoc, param, chunk, err_chunk);
                 break;
         }
@@ -2516,12 +2512,11 @@ do_addr_param:
                 /* Suggested Cookie Life span increment's unit is msec,
                  * (1/1000sec).
                  */
-                asoc->cookie_life.tv_sec += stale / 1000;
-                asoc->cookie_life.tv_usec += (stale % 1000) * 1000;
+                asoc->cookie_life = ktime_add_ms(asoc->cookie_life, stale);
                 break;
 
         case SCTP_PARAM_HOST_NAME_ADDRESS:
-                SCTP_DEBUG_PRINTK("unimplemented SCTP_HOST_NAME_ADDRESS\n");
+                pr_debug("%s: unimplemented SCTP_HOST_NAME_ADDRESS\n", __func__);
                 break;
 
         case SCTP_PARAM_SUPPORTED_ADDRESS_TYPES:
@@ -2667,8 +2662,8 @@ fall_through:
                  * called prior to this routine.  Simply log the error
                  * here.
                  */
-                SCTP_DEBUG_PRINTK("Ignoring param: %d for association %p.\n",
-                                  ntohs(param.p->type), asoc);
+                pr_debug("%s: ignoring param:%d for association:%p.\n",
+                         __func__, ntohs(param.p->type), asoc);
                 break;
         }
 
@@ -2810,7 +2805,10 @@ struct sctp_chunk *sctp_make_asconf_update_ip(struct sctp_association *asoc,
                         totallen += paramlen;
                         totallen += addr_param_len;
                         del_pickup = 1;
-                        SCTP_DEBUG_PRINTK("mkasconf_update_ip: picked same-scope del_pending addr, totallen for all addresses is %d\n", totallen);
+
+                        pr_debug("%s: picked same-scope del_pending addr, "
+                                 "totallen for all addresses is %d\n",
+                                 __func__, totallen);
                 }
         }
 
diff --git a/net/sctp/sm_sideeffect.c b/net/sctp/sm_sideeffect.c
index 8aab894aeabe..9da68852ee94 100644
--- a/net/sctp/sm_sideeffect.c
+++ b/net/sctp/sm_sideeffect.c
@@ -257,7 +257,7 @@ void sctp_generate_t3_rtx_event(unsigned long peer)
 
         sctp_bh_lock_sock(asoc->base.sk);
         if (sock_owned_by_user(asoc->base.sk)) {
-                SCTP_DEBUG_PRINTK("%s:Sock is busy.\n", __func__);
+                pr_debug("%s: sock is busy\n", __func__);
 
                 /* Try again later.  */
                 if (!mod_timer(&transport->T3_rtx_timer, jiffies + (HZ/20)))
@@ -297,9 +297,8 @@ static void sctp_generate_timeout_event(struct sctp_association *asoc,
 
         sctp_bh_lock_sock(asoc->base.sk);
         if (sock_owned_by_user(asoc->base.sk)) {
-                SCTP_DEBUG_PRINTK("%s:Sock is busy: timer %d\n",
-                                  __func__,
-                                  timeout_type);
+                pr_debug("%s: sock is busy: timer %d\n", __func__,
+                         timeout_type);
 
                 /* Try again later.  */
                 if (!mod_timer(&asoc->timers[timeout_type], jiffies + (HZ/20)))
@@ -377,7 +376,7 @@ void sctp_generate_heartbeat_event(unsigned long data)
 
         sctp_bh_lock_sock(asoc->base.sk);
         if (sock_owned_by_user(asoc->base.sk)) {
-                SCTP_DEBUG_PRINTK("%s:Sock is busy.\n", __func__);
+                pr_debug("%s: sock is busy\n", __func__);
 
                 /* Try again later.  */
                 if (!mod_timer(&transport->hb_timer, jiffies + (HZ/20)))
@@ -415,7 +414,7 @@ void sctp_generate_proto_unreach_event(unsigned long data)
         
         sctp_bh_lock_sock(asoc->base.sk);
         if (sock_owned_by_user(asoc->base.sk)) {
-                SCTP_DEBUG_PRINTK("%s:Sock is busy.\n", __func__);
+                pr_debug("%s: sock is busy\n", __func__);
 
                 /* Try again later.  */
                 if (!mod_timer(&transport->proto_unreach_timer,
@@ -521,11 +520,9 @@ static void sctp_do_8_2_transport_strike(sctp_cmd_seq_t *commands,
 
         if (transport->state != SCTP_INACTIVE &&
             (transport->error_count > transport->pathmaxrxt)) {
-                SCTP_DEBUG_PRINTK_IPADDR("transport_strike:association %p",
-                                         " transport IP: port:%d failed.\n",
-                                         asoc,
-                                         (&transport->ipaddr),
-                                         ntohs(transport->ipaddr.v4.sin_port));
+                pr_debug("%s: association:%p transport addr:%pISpc failed\n",
+                         __func__, asoc, &transport->ipaddr.sa);
+
                 sctp_assoc_control_transport(asoc, transport,
                                              SCTP_TRANSPORT_DOWN,
                                              SCTP_FAILED_THRESHOLD);
@@ -733,6 +730,12 @@ static void sctp_cmd_transport_on(sctp_cmd_seq_t *cmds,
                 sctp_assoc_control_transport(asoc, t, SCTP_TRANSPORT_UP,
                                              SCTP_HEARTBEAT_SUCCESS);
 
+        /* HB-ACK was received for a the proper HB.  Consider this
+         * forward progress.
+         */
+        if (t->dst)
+                dst_confirm(t->dst);
+
         /* The receiver of the HEARTBEAT ACK should also perform an
          * RTT measurement for that destination transport address
          * using the time value carried in the HEARTBEAT ACK chunk.
@@ -804,8 +807,7 @@ static void sctp_cmd_new_state(sctp_cmd_seq_t *cmds,
 
         asoc->state = state;
 
-        SCTP_DEBUG_PRINTK("sctp_cmd_new_state: asoc %p[%s]\n",
-                          asoc, sctp_state_tbl[state]);
+        pr_debug("%s: asoc:%p[%s]\n", __func__, asoc, sctp_state_tbl[state]);
 
         if (sctp_style(sk, TCP)) {
                 /* Change the sk->sk_state of a TCP-style socket that has
@@ -864,6 +866,7 @@ static void sctp_cmd_delete_tcb(sctp_cmd_seq_t *cmds,
             (!asoc->temp) && (sk->sk_shutdown != SHUTDOWN_MASK))
                 return;
 
+        BUG_ON(asoc->peer.primary_path == NULL);
         sctp_unhash_established(asoc);
         sctp_association_free(asoc);
 }
@@ -1016,15 +1019,11 @@ static void sctp_cmd_t1_timer_update(struct sctp_association *asoc,
                         asoc->timeouts[timer] = asoc->max_init_timeo;
                 }
                 asoc->init_cycle++;
-                SCTP_DEBUG_PRINTK(
-                        "T1 %s Timeout adjustment"
-                        " init_err_counter: %d"
-                        " cycle: %d"
-                        " timeout: %ld\n",
-                        name,
-                        asoc->init_err_counter,
-                        asoc->init_cycle,
-                        asoc->timeouts[timer]);
+
+                pr_debug("%s: T1[%s] timeout adjustment init_err_counter:%d"
+                         " cycle:%d timeout:%ld\n", __func__, name,
+                         asoc->init_err_counter, asoc->init_cycle,
+                         asoc->timeouts[timer]);
         }
 
 }
@@ -1079,23 +1078,19 @@ static void sctp_cmd_send_asconf(struct sctp_association *asoc)
  * main flow of sctp_do_sm() to keep attention focused on the real
  * functionality there.
  */
-#define DEBUG_PRE \
-        SCTP_DEBUG_PRINTK("sctp_do_sm prefn: " \
-                          "ep %p, %s, %s, asoc %p[%s], %s\n", \
-                          ep, sctp_evttype_tbl[event_type], \
-                          (*debug_fn)(subtype), asoc, \
-                          sctp_state_tbl[state], state_fn->name)
-
-#define DEBUG_POST \
-        SCTP_DEBUG_PRINTK("sctp_do_sm postfn: " \
-                          "asoc %p, status: %s\n", \
-                          asoc, sctp_status_tbl[status])
-
-#define DEBUG_POST_SFX \
-        SCTP_DEBUG_PRINTK("sctp_do_sm post sfx: error %d, asoc %p[%s]\n", \
-                          error, asoc, \
-                          sctp_state_tbl[(asoc && sctp_id2assoc(ep->base.sk, \
-                          sctp_assoc2id(asoc)))?asoc->state:SCTP_STATE_CLOSED])
+#define debug_pre_sfn() \
+        pr_debug("%s[pre-fn]: ep:%p, %s, %s, asoc:%p[%s], %s\n", __func__, \
+                 ep, sctp_evttype_tbl[event_type], (*debug_fn)(subtype),   \
+                 asoc, sctp_state_tbl[state], state_fn->name)
+
+#define debug_post_sfn() \
+        pr_debug("%s[post-fn]: asoc:%p, status:%s\n", __func__, asoc, \
+                 sctp_status_tbl[status])
+
+#define debug_post_sfx() \
+        pr_debug("%s[post-sfx]: error:%d, asoc:%p[%s]\n", __func__, error, \
+                 asoc, sctp_state_tbl[(asoc && sctp_id2assoc(ep->base.sk, \
+                 sctp_assoc2id(asoc))) ? asoc->state : SCTP_STATE_CLOSED])
 
 /*
  * This is the master state machine processing function.
@@ -1115,7 +1110,6 @@ int sctp_do_sm(struct net *net, sctp_event_t event_type, sctp_subtype_t subtype,
         sctp_disposition_t status;
         int error = 0;
         typedef const char *(printfn_t)(sctp_subtype_t);
-
         static printfn_t *table[] = {
                 NULL, sctp_cname, sctp_tname, sctp_oname, sctp_pname,
         };
@@ -1128,21 +1122,18 @@ int sctp_do_sm(struct net *net, sctp_event_t event_type, sctp_subtype_t subtype,
 
         sctp_init_cmd_seq(&commands);
 
-        DEBUG_PRE;
+        debug_pre_sfn();
         status = (*state_fn->fn)(net, ep, asoc, subtype, event_arg, &commands);
-        DEBUG_POST;
+        debug_post_sfn();
 
         error = sctp_side_effects(event_type, subtype, state,
                                   ep, asoc, event_arg, status,
                                   &commands, gfp);
-        DEBUG_POST_SFX;
+        debug_post_sfx();
 
         return error;
 }
 
-#undef DEBUG_PRE
-#undef DEBUG_POST
-
 /*****************************************************************
  * This the master state function side effect processing function.
  *****************************************************************/
@@ -1171,9 +1162,9 @@ static int sctp_side_effects(sctp_event_t event_type, sctp_subtype_t subtype,
 
         switch (status) {
         case SCTP_DISPOSITION_DISCARD:
-                SCTP_DEBUG_PRINTK("Ignored sctp protocol event - state %d, "
-                                  "event_type %d, event_id %d\n",
-                                  state, event_type, subtype.chunk);
+                pr_debug("%s: ignored sctp protocol event - state:%d, "
+                         "event_type:%d, event_id:%d\n", __func__, state,
+                         event_type, subtype.chunk);
                 break;
 
         case SCTP_DISPOSITION_NOMEM:
@@ -1274,8 +1265,10 @@ static int sctp_cmd_interpreter(sctp_event_t event_type,
                                 sctp_outq_uncork(&asoc->outqueue);
                                 local_cork = 0;
                         }
-                        asoc = cmd->obj.asoc;
+
                         /* Register with the endpoint.  */
+                        asoc = cmd->obj.asoc;
+                        BUG_ON(asoc->peer.primary_path == NULL);
                         sctp_endpoint_add_asoc(ep, asoc);
                         sctp_hash_established(asoc);
                         break;
@@ -1422,18 +1415,18 @@ static int sctp_cmd_interpreter(sctp_event_t event_type,
 
                 case SCTP_CMD_CHUNK_ULP:
                         /* Send a chunk to the sockets layer.  */
-                        SCTP_DEBUG_PRINTK("sm_sideff: %s %p, %s %p.\n",
-                                          "chunk_up:", cmd->obj.chunk,
-                                          "ulpq:", &asoc->ulpq);
+                        pr_debug("%s: sm_sideff: chunk_up:%p, ulpq:%p\n",
+                                 __func__, cmd->obj.chunk, &asoc->ulpq);
+
                         sctp_ulpq_tail_data(&asoc->ulpq, cmd->obj.chunk,
                                             GFP_ATOMIC);
                         break;
 
                 case SCTP_CMD_EVENT_ULP:
                         /* Send a notification to the sockets layer.  */
-                        SCTP_DEBUG_PRINTK("sm_sideff: %s %p, %s %p.\n",
-                                          "event_up:",cmd->obj.ulpevent,
-                                          "ulpq:",&asoc->ulpq);
+                        pr_debug("%s: sm_sideff: event_up:%p, ulpq:%p\n",
+                                 __func__, cmd->obj.ulpevent, &asoc->ulpq);
+
                         sctp_ulpq_tail_event(&asoc->ulpq, cmd->obj.ulpevent);
                         break;
 
@@ -1598,7 +1591,7 @@ static int sctp_cmd_interpreter(sctp_event_t event_type,
                         break;
 
                 case SCTP_CMD_REPORT_BAD_TAG:
-                        SCTP_DEBUG_PRINTK("vtag mismatch!\n");
+                        pr_debug("%s: vtag mismatch!\n", __func__);
                         break;
 
                 case SCTP_CMD_STRIKE:
diff --git a/net/sctp/sm_statefuns.c b/net/sctp/sm_statefuns.c
index de1a0138317f..f6b7109195a6 100644
--- a/net/sctp/sm_statefuns.c
+++ b/net/sctp/sm_statefuns.c
@@ -1179,9 +1179,9 @@ sctp_disposition_t sctp_sf_backbeat_8_3(struct net *net,
         /* Check if the timestamp looks valid.  */
         if (time_after(hbinfo->sent_at, jiffies) ||
             time_after(jiffies, hbinfo->sent_at + max_interval)) {
-                SCTP_DEBUG_PRINTK("%s: HEARTBEAT ACK with invalid timestamp "
-                                  "received for transport: %p\n",
-                                   __func__, link);
+                pr_debug("%s: HEARTBEAT ACK with invalid timestamp received "
+                         "for transport:%p\n", __func__, link);
+
                 return SCTP_DISPOSITION_DISCARD;
         }
 
@@ -2562,7 +2562,8 @@ static sctp_disposition_t sctp_stop_t1_and_abort(struct net *net,
                                            const struct sctp_association *asoc,
                                            struct sctp_transport *transport)
 {
-        SCTP_DEBUG_PRINTK("ABORT received (INIT).\n");
+        pr_debug("%s: ABORT received (INIT)\n", __func__);
+
         sctp_add_cmd_sf(commands, SCTP_CMD_NEW_STATE,
                         SCTP_STATE(SCTP_STATE_CLOSED));
         SCTP_INC_STATS(net, SCTP_MIB_ABORTEDS);
@@ -2572,6 +2573,7 @@ static sctp_disposition_t sctp_stop_t1_and_abort(struct net *net,
         /* CMD_INIT_FAILED will DELETE_TCB. */
         sctp_add_cmd_sf(commands, SCTP_CMD_INIT_FAILED,
                         SCTP_PERR(error));
+
         return SCTP_DISPOSITION_ABORT;
 }
 
@@ -2637,8 +2639,9 @@ sctp_disposition_t sctp_sf_do_9_2_shutdown(struct net *net,
         ctsn = ntohl(sdh->cum_tsn_ack);
 
         if (TSN_lt(ctsn, asoc->ctsn_ack_point)) {
-                SCTP_DEBUG_PRINTK("ctsn %x\n", ctsn);
-                SCTP_DEBUG_PRINTK("ctsn_ack_point %x\n", asoc->ctsn_ack_point);
+                pr_debug("%s: ctsn:%x, ctsn_ack_point:%x\n", __func__, ctsn,
+                         asoc->ctsn_ack_point);
+
                 return SCTP_DISPOSITION_DISCARD;
         }
 
@@ -2721,8 +2724,9 @@ sctp_disposition_t sctp_sf_do_9_2_shut_ctsn(struct net *net,
         ctsn = ntohl(sdh->cum_tsn_ack);
 
         if (TSN_lt(ctsn, asoc->ctsn_ack_point)) {
-                SCTP_DEBUG_PRINTK("ctsn %x\n", ctsn);
-                SCTP_DEBUG_PRINTK("ctsn_ack_point %x\n", asoc->ctsn_ack_point);
+                pr_debug("%s: ctsn:%x, ctsn_ack_point:%x\n", __func__, ctsn,
+                         asoc->ctsn_ack_point);
+
                 return SCTP_DISPOSITION_DISCARD;
         }
 
@@ -3174,8 +3178,9 @@ sctp_disposition_t sctp_sf_eat_sack_6_2(struct net *net,
          *     Point indicates an out-of-order SACK.
          */
         if (TSN_lt(ctsn, asoc->ctsn_ack_point)) {
-                SCTP_DEBUG_PRINTK("ctsn %x\n", ctsn);
-                SCTP_DEBUG_PRINTK("ctsn_ack_point %x\n", asoc->ctsn_ack_point);
+                pr_debug("%s: ctsn:%x, ctsn_ack_point:%x\n", __func__, ctsn,
+                         asoc->ctsn_ack_point);
+
                 return SCTP_DISPOSITION_DISCARD;
         }
 
@@ -3859,7 +3864,7 @@ sctp_disposition_t sctp_sf_eat_fwd_tsn(struct net *net,
         skb_pull(chunk->skb, len);
 
         tsn = ntohl(fwdtsn_hdr->new_cum_tsn);
-        SCTP_DEBUG_PRINTK("%s: TSN 0x%x.\n", __func__, tsn);
+        pr_debug("%s: TSN 0x%x\n", __func__, tsn);
 
         /* The TSN is too high--silently discard the chunk and count on it
          * getting retransmitted later.
@@ -3927,7 +3932,7 @@ sctp_disposition_t sctp_sf_eat_fwd_tsn_fast(
         skb_pull(chunk->skb, len);
 
         tsn = ntohl(fwdtsn_hdr->new_cum_tsn);
-        SCTP_DEBUG_PRINTK("%s: TSN 0x%x.\n", __func__, tsn);
+        pr_debug("%s: TSN 0x%x\n", __func__, tsn);
 
         /* The TSN is too high--silently discard the chunk and count on it
          * getting retransmitted later.
@@ -4166,7 +4171,7 @@ sctp_disposition_t sctp_sf_unk_chunk(struct net *net,
         struct sctp_chunk *err_chunk;
         sctp_chunkhdr_t *hdr;
 
-        SCTP_DEBUG_PRINTK("Processing the unknown chunk id %d.\n", type.chunk);
+        pr_debug("%s: processing unknown chunk id:%d\n", __func__, type.chunk);
 
         if (!sctp_vtag_verify(unk_chunk, asoc))
                 return sctp_sf_pdiscard(net, ep, asoc, type, arg, commands);
@@ -4256,7 +4261,8 @@ sctp_disposition_t sctp_sf_discard_chunk(struct net *net,
                 return sctp_sf_violation_chunklen(net, ep, asoc, type, arg,
                                                   commands);
 
-        SCTP_DEBUG_PRINTK("Chunk %d is discarded\n", type.chunk);
+        pr_debug("%s: chunk:%d is discarded\n", __func__, type.chunk);
+
         return SCTP_DISPOSITION_DISCARD;
 }
 
@@ -4632,16 +4638,16 @@ sctp_disposition_t sctp_sf_do_prm_asoc(struct net *net,
         if (!repl)
                 goto nomem;
 
+        /* Choose transport for INIT. */
+        sctp_add_cmd_sf(commands, SCTP_CMD_INIT_CHOOSE_TRANSPORT,
+                        SCTP_CHUNK(repl));
+
         /* Cast away the const modifier, as we want to just
          * rerun it through as a sideffect.
          */
         my_asoc = (struct sctp_association *)asoc;
         sctp_add_cmd_sf(commands, SCTP_CMD_NEW_ASOC, SCTP_ASOC(my_asoc));
 
-        /* Choose transport for INIT. */
-        sctp_add_cmd_sf(commands, SCTP_CMD_INIT_CHOOSE_TRANSPORT,
-                        SCTP_CHUNK(repl));
-
         /* After sending the INIT, "A" starts the T1-init timer and
          * enters the COOKIE-WAIT state.
          */
@@ -5184,7 +5190,9 @@ sctp_disposition_t sctp_sf_ignore_primitive(
         void *arg,
         sctp_cmd_seq_t *commands)
 {
-        SCTP_DEBUG_PRINTK("Primitive type %d is ignored.\n", type.primitive);
+        pr_debug("%s: primitive type:%d is ignored\n", __func__,
+                 type.primitive);
+
         return SCTP_DISPOSITION_DISCARD;
 }
 
@@ -5379,7 +5387,9 @@ sctp_disposition_t sctp_sf_ignore_other(struct net *net,
                                         void *arg,
                                         sctp_cmd_seq_t *commands)
 {
-        SCTP_DEBUG_PRINTK("The event other type %d is ignored\n", type.other);
+        pr_debug("%s: the event other type:%d is ignored\n",
+                 __func__, type.other);
+
         return SCTP_DISPOSITION_DISCARD;
 }
 
@@ -5527,7 +5537,8 @@ sctp_disposition_t sctp_sf_t1_init_timer_expire(struct net *net,
         struct sctp_bind_addr *bp;
         int attempts = asoc->init_err_counter + 1;
 
-        SCTP_DEBUG_PRINTK("Timer T1 expired (INIT).\n");
+        pr_debug("%s: timer T1 expired (INIT)\n", __func__);
+
         SCTP_INC_STATS(net, SCTP_MIB_T1_INIT_EXPIREDS);
 
         if (attempts <= asoc->max_init_attempts) {
@@ -5546,9 +5557,10 @@ sctp_disposition_t sctp_sf_t1_init_timer_expire(struct net *net,
 
                 sctp_add_cmd_sf(commands, SCTP_CMD_REPLY, SCTP_CHUNK(repl));
         } else {
-                SCTP_DEBUG_PRINTK("Giving up on INIT, attempts: %d"
-                                  " max_init_attempts: %d\n",
-                                  attempts, asoc->max_init_attempts);
+                pr_debug("%s: giving up on INIT, attempts:%d "
+                         "max_init_attempts:%d\n", __func__, attempts,
+                         asoc->max_init_attempts);
+
                 sctp_add_cmd_sf(commands, SCTP_CMD_SET_SK_ERR,
                                 SCTP_ERROR(ETIMEDOUT));
                 sctp_add_cmd_sf(commands, SCTP_CMD_INIT_FAILED,
@@ -5588,7 +5600,8 @@ sctp_disposition_t sctp_sf_t1_cookie_timer_expire(struct net *net,
         struct sctp_chunk *repl = NULL;
         int attempts = asoc->init_err_counter + 1;
 
-        SCTP_DEBUG_PRINTK("Timer T1 expired (COOKIE-ECHO).\n");
+        pr_debug("%s: timer T1 expired (COOKIE-ECHO)\n", __func__);
+
         SCTP_INC_STATS(net, SCTP_MIB_T1_COOKIE_EXPIREDS);
 
         if (attempts <= asoc->max_init_attempts) {
@@ -5636,7 +5649,8 @@ sctp_disposition_t sctp_sf_t2_timer_expire(struct net *net,
 {
         struct sctp_chunk *reply = NULL;
 
-        SCTP_DEBUG_PRINTK("Timer T2 expired.\n");
+        pr_debug("%s: timer T2 expired\n", __func__);
+
         SCTP_INC_STATS(net, SCTP_MIB_T2_SHUTDOWN_EXPIREDS);
 
         ((struct sctp_association *)asoc)->shutdown_retries++;
@@ -5777,7 +5791,8 @@ sctp_disposition_t sctp_sf_t5_timer_expire(struct net *net,
 {
         struct sctp_chunk *reply = NULL;
 
-        SCTP_DEBUG_PRINTK("Timer T5 expired.\n");
+        pr_debug("%s: timer T5 expired\n", __func__);
+
         SCTP_INC_STATS(net, SCTP_MIB_T5_SHUTDOWN_GUARD_EXPIREDS);
 
         reply = sctp_make_abort(asoc, NULL, 0);
@@ -5892,7 +5907,8 @@ sctp_disposition_t sctp_sf_timer_ignore(struct net *net,
                                         void *arg,
                                         sctp_cmd_seq_t *commands)
 {
-        SCTP_DEBUG_PRINTK("Timer %d ignored.\n", type.chunk);
+        pr_debug("%s: timer %d ignored\n", __func__, type.chunk);
+
         return SCTP_DISPOSITION_CONSUME;
 }
 
@@ -6102,7 +6118,7 @@ static int sctp_eat_data(const struct sctp_association *asoc,
         skb_pull(chunk->skb, sizeof(sctp_datahdr_t));
 
         tsn = ntohl(data_hdr->tsn);
-        SCTP_DEBUG_PRINTK("eat_data: TSN 0x%x.\n", tsn);
+        pr_debug("%s: TSN 0x%x\n", __func__, tsn);
 
         /* ASSERT:  Now skb->data is really the user data.  */
 
@@ -6179,12 +6195,12 @@ static int sctp_eat_data(const struct sctp_association *asoc,
                  */
                 if (sctp_tsnmap_has_gap(map) &&
                     (sctp_tsnmap_get_ctsn(map) + 1) == tsn) {
-                        SCTP_DEBUG_PRINTK("Reneging for tsn:%u\n", tsn);
+                        pr_debug("%s: reneging for tsn:%u\n", __func__, tsn);
                         deliver = SCTP_CMD_RENEGE;
                 } else {
-                        SCTP_DEBUG_PRINTK("Discard tsn: %u len: %Zd, "
-                                          "rwnd: %d\n", tsn, datalen,
-                                          asoc->rwnd);
+                        pr_debug("%s: discard tsn:%u len:%zu, rwnd:%d\n",
+                                 __func__, tsn, datalen, asoc->rwnd);
+
                         return SCTP_IERROR_IGNORE_TSN;
                 }
         }
@@ -6199,7 +6215,8 @@ static int sctp_eat_data(const struct sctp_association *asoc,
         if (*sk->sk_prot_creator->memory_pressure) {
                 if (sctp_tsnmap_has_gap(map) &&
                    (sctp_tsnmap_get_ctsn(map) + 1) == tsn) {
-                        SCTP_DEBUG_PRINTK("Under Pressure! Reneging for tsn:%u\n", tsn);
+                        pr_debug("%s: under pressure, reneging for tsn:%u\n",
+                                 __func__, tsn);
                         deliver = SCTP_CMD_RENEGE;
                  }
         }
diff --git a/net/sctp/socket.c b/net/sctp/socket.c
index 6abb1caf9836..c6670d2e3f8d 100644
--- a/net/sctp/socket.c
+++ b/net/sctp/socket.c
@@ -84,11 +84,6 @@
 #include <net/sctp/sctp.h>
 #include <net/sctp/sm.h>
 
-/* WARNING:  Please do not remove the SCTP_STATIC attribute to
- * any of the functions below as they are used to export functions
- * used by a project regression testsuite.
- */
-
 /* Forward declarations for internal helper functions. */
 static int sctp_writeable(struct sock *sk);
 static void sctp_wfree(struct sk_buff *skb);
@@ -98,6 +93,7 @@ static int sctp_wait_for_packet(struct sock * sk, int *err, long *timeo_p);
 static int sctp_wait_for_connect(struct sctp_association *, long *timeo_p);
 static int sctp_wait_for_accept(struct sock *sk, long timeo);
 static void sctp_wait_for_close(struct sock *sk, long timeo);
+static void sctp_destruct_sock(struct sock *sk);
 static struct sctp_af *sctp_sockaddr_af(struct sctp_sock *opt,
                                         union sctp_addr *addr, int len);
 static int sctp_bindx_add(struct sock *, struct sockaddr *, int);
@@ -279,14 +275,14 @@ static struct sctp_transport *sctp_addr_id2transport(struct sock *sk,
  *             sockaddr_in6 [RFC 2553]),
  *   addr_len - the size of the address structure.
  */
-SCTP_STATIC int sctp_bind(struct sock *sk, struct sockaddr *addr, int addr_len)
+static int sctp_bind(struct sock *sk, struct sockaddr *addr, int addr_len)
 {
         int retval = 0;
 
         sctp_lock_sock(sk);
 
-        SCTP_DEBUG_PRINTK("sctp_bind(sk: %p, addr: %p, addr_len: %d)\n",
-                          sk, addr, addr_len);
+        pr_debug("%s: sk:%p, addr:%p, addr_len:%d\n", __func__, sk,
+                 addr, addr_len);
 
         /* Disallow binding twice. */
         if (!sctp_sk(sk)->ep->base.bind_addr.port)
@@ -333,7 +329,7 @@ static struct sctp_af *sctp_sockaddr_af(struct sctp_sock *opt,
 }
 
 /* Bind a local address either to an endpoint or to an association.  */
-SCTP_STATIC int sctp_do_bind(struct sock *sk, union sctp_addr *addr, int len)
+static int sctp_do_bind(struct sock *sk, union sctp_addr *addr, int len)
 {
         struct net *net = sock_net(sk);
         struct sctp_sock *sp = sctp_sk(sk);
@@ -346,19 +342,15 @@ SCTP_STATIC int sctp_do_bind(struct sock *sk, union sctp_addr *addr, int len)
         /* Common sockaddr verification. */
         af = sctp_sockaddr_af(sp, addr, len);
         if (!af) {
-                SCTP_DEBUG_PRINTK("sctp_do_bind(sk: %p, newaddr: %p, len: %d) EINVAL\n",
-                                  sk, addr, len);
+                pr_debug("%s: sk:%p, newaddr:%p, len:%d EINVAL\n",
+                         __func__, sk, addr, len);
                 return -EINVAL;
         }
 
         snum = ntohs(addr->v4.sin_port);
 
-        SCTP_DEBUG_PRINTK_IPADDR("sctp_do_bind(sk: %p, new addr: ",
-                                 ", port: %d, new port: %d, len: %d)\n",
-                                 sk,
-                                 addr,
-                                 bp->port, snum,
-                                 len);
+        pr_debug("%s: sk:%p, new addr:%pISc, port:%d, new port:%d, len:%d\n",
+                 __func__, sk, &addr->sa, bp->port, snum, len);
 
         /* PF specific bind() address verification. */
         if (!sp->pf->bind_verify(sp, addr))
@@ -372,9 +364,8 @@ SCTP_STATIC int sctp_do_bind(struct sock *sk, union sctp_addr *addr, int len)
                 if (!snum)
                         snum = bp->port;
                 else if (snum != bp->port) {
-                        SCTP_DEBUG_PRINTK("sctp_do_bind:"
-                                  " New port %d does not match existing port "
-                                  "%d.\n", snum, bp->port);
+                        pr_debug("%s: new port %d doesn't match existing port "
+                                 "%d\n", __func__, snum, bp->port);
                         return -EINVAL;
                 }
         }
@@ -472,8 +463,8 @@ static int sctp_bindx_add(struct sock *sk, struct sockaddr *addrs, int addrcnt)
         struct sockaddr *sa_addr;
         struct sctp_af *af;
 
-        SCTP_DEBUG_PRINTK("sctp_bindx_add (sk: %p, addrs: %p, addrcnt: %d)\n",
-                          sk, addrs, addrcnt);
+        pr_debug("%s: sk:%p, addrs:%p, addrcnt:%d\n", __func__, sk,
+                 addrs, addrcnt);
 
         addr_buf = addrs;
         for (cnt = 0; cnt < addrcnt; cnt++) {
@@ -539,11 +530,10 @@ static int sctp_send_asconf_add_ip(struct sock		*sk,
         sp = sctp_sk(sk);
         ep = sp->ep;
 
-        SCTP_DEBUG_PRINTK("%s: (sk: %p, addrs: %p, addrcnt: %d)\n",
-                          __func__, sk, addrs, addrcnt);
+        pr_debug("%s: sk:%p, addrs:%p, addrcnt:%d\n",
+                 __func__, sk, addrs, addrcnt);
 
         list_for_each_entry(asoc, &ep->asocs, asocs) {
-
                 if (!asoc->peer.asconf_capable)
                         continue;
 
@@ -650,8 +640,8 @@ static int sctp_bindx_rem(struct sock *sk, struct sockaddr *addrs, int addrcnt)
         union sctp_addr *sa_addr;
         struct sctp_af *af;
 
-        SCTP_DEBUG_PRINTK("sctp_bindx_rem (sk: %p, addrs: %p, addrcnt: %d)\n",
-                          sk, addrs, addrcnt);
+        pr_debug("%s: sk:%p, addrs:%p, addrcnt:%d\n",
+                 __func__, sk, addrs, addrcnt);
 
         addr_buf = addrs;
         for (cnt = 0; cnt < addrcnt; cnt++) {
@@ -744,8 +734,8 @@ static int sctp_send_asconf_del_ip(struct sock		*sk,
         sp = sctp_sk(sk);
         ep = sp->ep;
 
-        SCTP_DEBUG_PRINTK("%s: (sk: %p, addrs: %p, addrcnt: %d)\n",
-                          __func__, sk, addrs, addrcnt);
+        pr_debug("%s: sk:%p, addrs:%p, addrcnt:%d\n",
+                 __func__, sk, addrs, addrcnt);
 
         list_for_each_entry(asoc, &ep->asocs, asocs) {
 
@@ -812,9 +802,11 @@ static int sctp_send_asconf_del_ip(struct sock		*sk,
                                 sin6 = (struct sockaddr_in6 *)addrs;
                                 asoc->asconf_addr_del_pending->v6.sin6_addr = sin6->sin6_addr;
                         }
-                        SCTP_DEBUG_PRINTK_IPADDR("send_asconf_del_ip: keep the last address asoc: %p ",
-                            " at %p\n", asoc, asoc->asconf_addr_del_pending,
-                            asoc->asconf_addr_del_pending);
+
+                        pr_debug("%s: keep the last address asoc:%p %pISc at %p\n",
+                                 __func__, asoc, &asoc->asconf_addr_del_pending->sa,
+                                 asoc->asconf_addr_del_pending);
+
                         asoc->src_out_of_asoc_ok = 1;
                         stored = 1;
                         goto skip_mkasconf;
@@ -964,9 +956,9 @@ int sctp_asconf_mgmt(struct sctp_sock *sp, struct sctp_sockaddr_entry *addrw)
  *
  * Returns 0 if ok, <0 errno code on error.
  */
-SCTP_STATIC int sctp_setsockopt_bindx(struct sock* sk,
-                                      struct sockaddr __user *addrs,
-                                      int addrs_size, int op)
+static int sctp_setsockopt_bindx(struct sock* sk,
+                                 struct sockaddr __user *addrs,
+                                 int addrs_size, int op)
 {
         struct sockaddr *kaddrs;
         int err;
@@ -976,8 +968,8 @@ SCTP_STATIC int sctp_setsockopt_bindx(struct sock* sk,
         void *addr_buf;
         struct sctp_af *af;
 
-        SCTP_DEBUG_PRINTK("sctp_setsockopt_bindx: sk %p addrs %p"
-                          " addrs_size %d opt %d\n", sk, addrs, addrs_size, op);
+        pr_debug("%s: sk:%p addrs:%p addrs_size:%d opt:%d\n",
+                 __func__, sk, addrs, addrs_size, op);
 
         if (unlikely(addrs_size <= 0))
                 return -EINVAL;
@@ -1235,10 +1227,9 @@ static int __sctp_connect(struct sock* sk,
         asoc = NULL;
 
 out_free:
+        pr_debug("%s: took out_free path with asoc:%p kaddrs:%p err:%d\n",
+                 __func__, asoc, kaddrs, err);
 
-        SCTP_DEBUG_PRINTK("About to exit __sctp_connect() free asoc: %p"
-                          " kaddrs: %p err: %d\n",
-                          asoc, kaddrs, err);
         if (asoc) {
                 /* sctp_primitive_ASSOCIATE may have added this association
                  * To the hash table, try to unhash it, just in case, its a noop
@@ -1312,7 +1303,7 @@ out_free:
  *
  * Returns >=0 if ok, <0 errno code on error.
  */
-SCTP_STATIC int __sctp_setsockopt_connectx(struct sock* sk,
+static int __sctp_setsockopt_connectx(struct sock* sk,
                                       struct sockaddr __user *addrs,
                                       int addrs_size,
                                       sctp_assoc_t *assoc_id)
@@ -1320,8 +1311,8 @@ SCTP_STATIC int __sctp_setsockopt_connectx(struct sock* sk,
         int err = 0;
         struct sockaddr *kaddrs;
 
-        SCTP_DEBUG_PRINTK("%s - sk %p addrs %p addrs_size %d\n",
-                          __func__, sk, addrs, addrs_size);
+        pr_debug("%s: sk:%p addrs:%p addrs_size:%d\n",
+                 __func__, sk, addrs, addrs_size);
 
         if (unlikely(addrs_size <= 0))
                 return -EINVAL;
@@ -1350,9 +1341,9 @@ SCTP_STATIC int __sctp_setsockopt_connectx(struct sock* sk,
  * This is an older interface.  It's kept for backward compatibility
  * to the option that doesn't provide association id.
  */
-SCTP_STATIC int sctp_setsockopt_connectx_old(struct sock* sk,
-                                      struct sockaddr __user *addrs,
-                                      int addrs_size)
+static int sctp_setsockopt_connectx_old(struct sock* sk,
+                                        struct sockaddr __user *addrs,
+                                        int addrs_size)
 {
         return __sctp_setsockopt_connectx(sk, addrs, addrs_size, NULL);
 }
@@ -1363,9 +1354,9 @@ SCTP_STATIC int sctp_setsockopt_connectx_old(struct sock* sk,
  * indication to the call.  Error is always negative and association id is
  * always positive.
  */
-SCTP_STATIC int sctp_setsockopt_connectx(struct sock* sk,
-                                      struct sockaddr __user *addrs,
-                                      int addrs_size)
+static int sctp_setsockopt_connectx(struct sock* sk,
+                                    struct sockaddr __user *addrs,
+                                    int addrs_size)
 {
         sctp_assoc_t assoc_id = 0;
         int err = 0;
@@ -1386,9 +1377,9 @@ SCTP_STATIC int sctp_setsockopt_connectx(struct sock* sk,
  * addrs_num structure member.  That way we can re-use the existing
  * code.
  */
-SCTP_STATIC int sctp_getsockopt_connectx3(struct sock* sk, int len,
-                                        char __user *optval,
-                                        int __user *optlen)
+static int sctp_getsockopt_connectx3(struct sock* sk, int len,
+                                     char __user *optval,
+                                     int __user *optlen)
 {
         struct sctp_getaddrs_old param;
         sctp_assoc_t assoc_id = 0;
@@ -1464,7 +1455,7 @@ SCTP_STATIC int sctp_getsockopt_connectx3(struct sock* sk, int len,
  * shutdown phase does not finish during this period, close() will
  * return but the graceful shutdown phase continues in the system.
  */
-SCTP_STATIC void sctp_close(struct sock *sk, long timeout)
+static void sctp_close(struct sock *sk, long timeout)
 {
         struct net *net = sock_net(sk);
         struct sctp_endpoint *ep;
@@ -1472,7 +1463,7 @@ SCTP_STATIC void sctp_close(struct sock *sk, long timeout)
         struct list_head *pos, *temp;
         unsigned int data_was_unread;
 
-        SCTP_DEBUG_PRINTK("sctp_close(sk: 0x%p, timeout:%ld)\n", sk, timeout);
+        pr_debug("%s: sk:%p, timeout:%ld\n", __func__, sk, timeout);
 
         sctp_lock_sock(sk);
         sk->sk_shutdown = SHUTDOWN_MASK;
@@ -1573,10 +1564,10 @@ static int sctp_error(struct sock *sk, int flags, int err)
  */
 /* BUG:  We do not implement the equivalent of sk_stream_wait_memory(). */
 
-SCTP_STATIC int sctp_msghdr_parse(const struct msghdr *, sctp_cmsgs_t *);
+static int sctp_msghdr_parse(const struct msghdr *, sctp_cmsgs_t *);
 
-SCTP_STATIC int sctp_sendmsg(struct kiocb *iocb, struct sock *sk,
-                             struct msghdr *msg, size_t msg_len)
+static int sctp_sendmsg(struct kiocb *iocb, struct sock *sk,
+                        struct msghdr *msg, size_t msg_len)
 {
         struct net *net = sock_net(sk);
         struct sctp_sock *sp;
@@ -1598,14 +1589,12 @@ SCTP_STATIC int sctp_sendmsg(struct kiocb *iocb, struct sock *sk,
         struct sctp_datamsg *datamsg;
         int msg_flags = msg->msg_flags;
 
-        SCTP_DEBUG_PRINTK("sctp_sendmsg(sk: %p, msg: %p, msg_len: %zu)\n",
-                          sk, msg, msg_len);
-
         err = 0;
         sp = sctp_sk(sk);
         ep = sp->ep;
 
-        SCTP_DEBUG_PRINTK("Using endpoint: %p.\n", ep);
+        pr_debug("%s: sk:%p, msg:%p, msg_len:%zu ep:%p\n", __func__, sk,
+                 msg, msg_len, ep);
 
         /* We cannot send a message over a TCP-style listening socket. */
         if (sctp_style(sk, TCP) && sctp_sstate(sk, LISTENING)) {
@@ -1615,9 +1604,8 @@ SCTP_STATIC int sctp_sendmsg(struct kiocb *iocb, struct sock *sk,
 
         /* Parse out the SCTP CMSGs.  */
         err = sctp_msghdr_parse(msg, &cmsgs);
-
         if (err) {
-                SCTP_DEBUG_PRINTK("msghdr parse err = %x\n", err);
+                pr_debug("%s: msghdr parse err:%x\n", __func__, err);
                 goto out_nounlock;
         }
 
@@ -1649,8 +1637,8 @@ SCTP_STATIC int sctp_sendmsg(struct kiocb *iocb, struct sock *sk,
                 associd = sinfo->sinfo_assoc_id;
         }
 
-        SCTP_DEBUG_PRINTK("msg_len: %zu, sinfo_flags: 0x%x\n",
-                          msg_len, sinfo_flags);
+        pr_debug("%s: msg_len:%zu, sinfo_flags:0x%x\n", __func__,
+                 msg_len, sinfo_flags);
 
         /* SCTP_EOF or SCTP_ABORT cannot be set on a TCP-style socket. */
         if (sctp_style(sk, TCP) && (sinfo_flags & (SCTP_EOF | SCTP_ABORT))) {
@@ -1679,7 +1667,7 @@ SCTP_STATIC int sctp_sendmsg(struct kiocb *iocb, struct sock *sk,
 
         transport = NULL;
 
-        SCTP_DEBUG_PRINTK("About to look up association.\n");
+        pr_debug("%s: about to look up association\n", __func__);
 
         sctp_lock_sock(sk);
 
@@ -1709,7 +1697,7 @@ SCTP_STATIC int sctp_sendmsg(struct kiocb *iocb, struct sock *sk,
         }
 
         if (asoc) {
-                SCTP_DEBUG_PRINTK("Just looked up association: %p.\n", asoc);
+                pr_debug("%s: just looked up association:%p\n", __func__, asoc);
 
                 /* We cannot send a message on a TCP-style SCTP_SS_ESTABLISHED
                  * socket that has an association in CLOSED state. This can
@@ -1722,8 +1710,9 @@ SCTP_STATIC int sctp_sendmsg(struct kiocb *iocb, struct sock *sk,
                 }
 
                 if (sinfo_flags & SCTP_EOF) {
-                        SCTP_DEBUG_PRINTK("Shutting down association: %p\n",
-                                          asoc);
+                        pr_debug("%s: shutting down association:%p\n",
+                                 __func__, asoc);
+
                         sctp_primitive_SHUTDOWN(net, asoc, NULL);
                         err = 0;
                         goto out_unlock;
@@ -1736,7 +1725,9 @@ SCTP_STATIC int sctp_sendmsg(struct kiocb *iocb, struct sock *sk,
                                 goto out_unlock;
                         }
 
-                        SCTP_DEBUG_PRINTK("Aborting association: %p\n", asoc);
+                        pr_debug("%s: aborting association:%p\n",
+                                 __func__, asoc);
+
                         sctp_primitive_ABORT(net, asoc, chunk);
                         err = 0;
                         goto out_unlock;
@@ -1745,7 +1736,7 @@ SCTP_STATIC int sctp_sendmsg(struct kiocb *iocb, struct sock *sk,
 
         /* Do we need to create the association?  */
         if (!asoc) {
-                SCTP_DEBUG_PRINTK("There is no association yet.\n");
+                pr_debug("%s: there is no association yet\n", __func__);
 
                 if (sinfo_flags & (SCTP_EOF | SCTP_ABORT)) {
                         err = -EINVAL;
@@ -1844,7 +1835,7 @@ SCTP_STATIC int sctp_sendmsg(struct kiocb *iocb, struct sock *sk,
         }
 
         /* ASSERT: we have a valid association at this point.  */
-        SCTP_DEBUG_PRINTK("We have a valid association.\n");
+        pr_debug("%s: we have a valid association\n", __func__);
 
         if (!sinfo) {
                 /* If the user didn't specify SNDRCVINFO, make up one with
@@ -1913,7 +1904,8 @@ SCTP_STATIC int sctp_sendmsg(struct kiocb *iocb, struct sock *sk,
                 err = sctp_primitive_ASSOCIATE(net, asoc, NULL);
                 if (err < 0)
                         goto out_free;
-                SCTP_DEBUG_PRINTK("We associated primitively.\n");
+
+                pr_debug("%s: we associated primitively\n", __func__);
         }
 
         /* Break the message into multiple chunks of maximum size. */
@@ -1940,17 +1932,15 @@ SCTP_STATIC int sctp_sendmsg(struct kiocb *iocb, struct sock *sk,
          */
         err = sctp_primitive_SEND(net, asoc, datamsg);
         /* Did the lower layer accept the chunk? */
-        if (err)
+        if (err) {
                 sctp_datamsg_free(datamsg);
-        else
-                sctp_datamsg_put(datamsg);
+                goto out_free;
+        }
 
-        SCTP_DEBUG_PRINTK("We sent primitively.\n");
+        pr_debug("%s: we sent primitively\n", __func__);
 
-        if (err)
-                goto out_free;
-        else
-                err = msg_len;
+        sctp_datamsg_put(datamsg);
+        err = msg_len;
 
         /* If we are already past ASSOCIATE, the lower
          * layers are responsible for association cleanup.
@@ -2034,9 +2024,9 @@ static int sctp_skb_pull(struct sk_buff *skb, int len)
  */
 static struct sk_buff *sctp_skb_recv_datagram(struct sock *, int, int, int *);
 
-SCTP_STATIC int sctp_recvmsg(struct kiocb *iocb, struct sock *sk,
-                             struct msghdr *msg, size_t len, int noblock,
-                             int flags, int *addr_len)
+static int sctp_recvmsg(struct kiocb *iocb, struct sock *sk,
+                        struct msghdr *msg, size_t len, int noblock,
+                        int flags, int *addr_len)
 {
         struct sctp_ulpevent *event = NULL;
         struct sctp_sock *sp = sctp_sk(sk);
@@ -2045,10 +2035,9 @@ SCTP_STATIC int sctp_recvmsg(struct kiocb *iocb, struct sock *sk,
         int err = 0;
         int skb_len;
 
-        SCTP_DEBUG_PRINTK("sctp_recvmsg(%s: %p, %s: %p, %s: %zd, %s: %d, %s: "
-                          "0x%x, %s: %p)\n", "sk", sk, "msghdr", msg,
-                          "len", len, "knoblauch", noblock,
-                          "flags", flags, "addr_len", addr_len);
+        pr_debug("%s: sk:%p, msghdr:%p, len:%zd, noblock:%d, flags:0x%x, "
+                 "addr_len:%p)\n", __func__, sk, msg, len, noblock, flags,
+                 addr_len);
 
         sctp_lock_sock(sk);
 
@@ -2915,13 +2904,8 @@ static int sctp_setsockopt_associnfo(struct sock *sk, char __user *optval, unsig
                         asoc->max_retrans = assocparams.sasoc_asocmaxrxt;
                 }
 
-                if (assocparams.sasoc_cookie_life != 0) {
-                        asoc->cookie_life.tv_sec =
-                                        assocparams.sasoc_cookie_life / 1000;
-                        asoc->cookie_life.tv_usec =
-                                        (assocparams.sasoc_cookie_life % 1000)
-                                        * 1000;
-                }
+                if (assocparams.sasoc_cookie_life != 0)
+                        asoc->cookie_life = ms_to_ktime(assocparams.sasoc_cookie_life);
         } else {
                 /* Set the values to the endpoint */
                 struct sctp_sock *sp = sctp_sk(sk);
@@ -3095,7 +3079,7 @@ static int sctp_setsockopt_peer_primary_addr(struct sock *sk, char __user *optva
 
         err = sctp_send_asconf(asoc, chunk);
 
-        SCTP_DEBUG_PRINTK("We set peer primary addr primitively.\n");
+        pr_debug("%s: we set peer primary addr primitively\n", __func__);
 
         return err;
 }
@@ -3565,13 +3549,12 @@ static int sctp_setsockopt_paddr_thresholds(struct sock *sk,
  *   optval  - the buffer to store the value of the option.
  *   optlen  - the size of the buffer.
  */
-SCTP_STATIC int sctp_setsockopt(struct sock *sk, int level, int optname,
-                                char __user *optval, unsigned int optlen)
+static int sctp_setsockopt(struct sock *sk, int level, int optname,
+                           char __user *optval, unsigned int optlen)
 {
         int retval = 0;
 
-        SCTP_DEBUG_PRINTK("sctp_setsockopt(sk: %p... optname: %d)\n",
-                          sk, optname);
+        pr_debug("%s: sk:%p, optname:%d\n", __func__, sk, optname);
 
         /* I can hardly begin to describe how wrong this is.  This is
          * so broken as to be worse than useless.  The API draft
@@ -3725,16 +3708,16 @@ out_nounlock:
  *
  * len: the size of the address.
  */
-SCTP_STATIC int sctp_connect(struct sock *sk, struct sockaddr *addr,
-                             int addr_len)
+static int sctp_connect(struct sock *sk, struct sockaddr *addr,
+                        int addr_len)
 {
         int err = 0;
         struct sctp_af *af;
 
         sctp_lock_sock(sk);
 
-        SCTP_DEBUG_PRINTK("%s - sk: %p, sockaddr: %p, addr_len: %d\n",
-                          __func__, sk, addr, addr_len);
+        pr_debug("%s: sk:%p, sockaddr:%p, addr_len:%d\n", __func__, sk,
+                 addr, addr_len);
 
         /* Validate addr_len before calling common connect/connectx routine. */
         af = sctp_get_af_specific(addr->sa_family);
@@ -3752,7 +3735,7 @@ SCTP_STATIC int sctp_connect(struct sock *sk, struct sockaddr *addr,
 }
 
 /* FIXME: Write comments. */
-SCTP_STATIC int sctp_disconnect(struct sock *sk, int flags)
+static int sctp_disconnect(struct sock *sk, int flags)
 {
         return -EOPNOTSUPP; /* STUB */
 }
@@ -3764,7 +3747,7 @@ SCTP_STATIC int sctp_disconnect(struct sock *sk, int flags)
  * descriptor will be returned from accept() to represent the newly
  * formed association.
  */
-SCTP_STATIC struct sock *sctp_accept(struct sock *sk, int flags, int *err)
+static struct sock *sctp_accept(struct sock *sk, int flags, int *err)
 {
         struct sctp_sock *sp;
         struct sctp_endpoint *ep;
@@ -3817,7 +3800,7 @@ out:
 }
 
 /* The SCTP ioctl handler. */
-SCTP_STATIC int sctp_ioctl(struct sock *sk, int cmd, unsigned long arg)
+static int sctp_ioctl(struct sock *sk, int cmd, unsigned long arg)
 {
         int rc = -ENOTCONN;
 
@@ -3859,13 +3842,12 @@ out:
  * initialized the SCTP-specific portion of the sock.
  * The sock structure should already be zero-filled memory.
  */
-SCTP_STATIC int sctp_init_sock(struct sock *sk)
+static int sctp_init_sock(struct sock *sk)
 {
         struct net *net = sock_net(sk);
-        struct sctp_endpoint *ep;
         struct sctp_sock *sp;
 
-        SCTP_DEBUG_PRINTK("sctp_init_sock(sk: %p)\n", sk);
+        pr_debug("%s: sk:%p\n", __func__, sk);
 
         sp = sctp_sk(sk);
 
@@ -3971,13 +3953,14 @@ SCTP_STATIC int sctp_init_sock(struct sock *sk)
          * change the data structure relationships, this may still
          * be useful for storing pre-connect address information.
          */
-        ep = sctp_endpoint_new(sk, GFP_KERNEL);
-        if (!ep)
+        sp->ep = sctp_endpoint_new(sk, GFP_KERNEL);
+        if (!sp->ep)
                 return -ENOMEM;
 
-        sp->ep = ep;
         sp->hmac = NULL;
 
+        sk->sk_destruct = sctp_destruct_sock;
+
         SCTP_DBG_OBJCNT_INC(sock);
 
         local_bh_disable();
@@ -3995,11 +3978,11 @@ SCTP_STATIC int sctp_init_sock(struct sock *sk)
 }
 
 /* Cleanup any SCTP per socket resources.  */
-SCTP_STATIC void sctp_destroy_sock(struct sock *sk)
+static void sctp_destroy_sock(struct sock *sk)
 {
         struct sctp_sock *sp;
 
-        SCTP_DEBUG_PRINTK("sctp_destroy_sock(sk: %p)\n", sk);
+        pr_debug("%s: sk:%p\n", __func__, sk);
 
         /* Release our hold on the endpoint. */
         sp = sctp_sk(sk);
@@ -4020,6 +4003,17 @@ SCTP_STATIC void sctp_destroy_sock(struct sock *sk)
         local_bh_enable();
 }
 
+/* Triggered when there are no references on the socket anymore */
+static void sctp_destruct_sock(struct sock *sk)
+{
+        struct sctp_sock *sp = sctp_sk(sk);
+
+        /* Free up the HMAC transform. */
+        crypto_free_hash(sp->hmac);
+
+        inet_sock_destruct(sk);
+}
+
 /* API 4.1.7 shutdown() - TCP Style Syntax
  *     int shutdown(int socket, int how);
  *
@@ -4036,7 +4030,7 @@ SCTP_STATIC void sctp_destroy_sock(struct sock *sk)
  *                     Disables further send  and  receive  operations
  *                     and initiates the SCTP shutdown sequence.
  */
-SCTP_STATIC void sctp_shutdown(struct sock *sk, int how)
+static void sctp_shutdown(struct sock *sk, int how)
 {
         struct net *net = sock_net(sk);
         struct sctp_endpoint *ep;
@@ -4121,9 +4115,9 @@ static int sctp_getsockopt_sctp_status(struct sock *sk, int len,
                 goto out;
         }
 
-        SCTP_DEBUG_PRINTK("sctp_getsockopt_sctp_status(%d): %d %d %d\n",
-                          len, status.sstat_state, status.sstat_rwnd,
-                          status.sstat_assoc_id);
+        pr_debug("%s: len:%d, state:%d, rwnd:%d, assoc_id:%d\n",
+                 __func__, len, status.sstat_state, status.sstat_rwnd,
+                 status.sstat_assoc_id);
 
         if (copy_to_user(optval, &status, len)) {
                 retval = -EFAULT;
@@ -4318,7 +4312,7 @@ static int sctp_getsockopt_peeloff(struct sock *sk, int len, char __user *optval
                 goto out;
 
         /* Map the socket to an unused fd that can be returned to the user.  */
-        retval = get_unused_fd();
+        retval = get_unused_fd_flags(0);
         if (retval < 0) {
                 sock_release(newsock);
                 goto out;
@@ -4331,8 +4325,8 @@ static int sctp_getsockopt_peeloff(struct sock *sk, int len, char __user *optval
                 return PTR_ERR(newfile);
         }
 
-        SCTP_DEBUG_PRINTK("%s: sk: %p newsk: %p sd: %d\n",
-                          __func__, sk, newsock->sk, retval);
+        pr_debug("%s: sk:%p, newsk:%p, sd:%d\n", __func__, sk, newsock->sk,
+                 retval);
 
         /* Return the fd mapped to the new socket.  */
         if (put_user(len, optlen)) {
@@ -4465,7 +4459,7 @@ static int sctp_getsockopt_peer_addr_params(struct sock *sk, int len,
                 trans = sctp_addr_id2transport(sk, &params.spp_address,
                                                params.spp_assoc_id);
                 if (!trans) {
-                        SCTP_DEBUG_PRINTK("Failed no transport\n");
+                        pr_debug("%s: failed no transport\n", __func__);
                         return -EINVAL;
                 }
         }
@@ -4476,7 +4470,7 @@ static int sctp_getsockopt_peer_addr_params(struct sock *sk, int len,
          */
         asoc = sctp_id2assoc(sk, params.spp_assoc_id);
         if (!asoc && params.spp_assoc_id && sctp_style(sk, UDP)) {
-                SCTP_DEBUG_PRINTK("Failed no association\n");
+                pr_debug("%s: failed no association\n", __func__);
                 return -EINVAL;
         }
 
@@ -5081,10 +5075,7 @@ static int sctp_getsockopt_associnfo(struct sock *sk, int len,
                 assocparams.sasoc_asocmaxrxt = asoc->max_retrans;
                 assocparams.sasoc_peer_rwnd = asoc->peer.rwnd;
                 assocparams.sasoc_local_rwnd = asoc->a_rwnd;
-                assocparams.sasoc_cookie_life = (asoc->cookie_life.tv_sec
-                                                * 1000) +
-                                                (asoc->cookie_life.tv_usec
-                                                / 1000);
+                assocparams.sasoc_cookie_life = ktime_to_ms(asoc->cookie_life);
 
                 list_for_each(pos, &asoc->peer.transport_addr_list) {
                         cnt ++;
@@ -5699,8 +5690,7 @@ static int sctp_getsockopt_assoc_stats(struct sock *sk, int len,
         if (put_user(len, optlen))
                 return -EFAULT;
 
-        SCTP_DEBUG_PRINTK("sctp_getsockopt_assoc_stat(%d): %d\n",
-                          len, sas.sas_assoc_id);
+        pr_debug("%s: len:%d, assoc_id:%d\n", __func__, len, sas.sas_assoc_id);
 
         if (copy_to_user(optval, &sas, len))
                 return -EFAULT;
@@ -5708,14 +5698,13 @@ static int sctp_getsockopt_assoc_stats(struct sock *sk, int len,
         return 0;
 }
 
-SCTP_STATIC int sctp_getsockopt(struct sock *sk, int level, int optname,
-                                char __user *optval, int __user *optlen)
+static int sctp_getsockopt(struct sock *sk, int level, int optname,
+                           char __user *optval, int __user *optlen)
 {
         int retval = 0;
         int len;
 
-        SCTP_DEBUG_PRINTK("sctp_getsockopt(sk: %p... optname: %d)\n",
-                          sk, optname);
+        pr_debug("%s: sk:%p, optname:%d\n", __func__, sk, optname);
 
         /* I can hardly begin to describe how wrong this is.  This is
          * so broken as to be worse than useless.  The API draft
@@ -5895,7 +5884,8 @@ static long sctp_get_port_local(struct sock *sk, union sctp_addr *addr)
 
         snum = ntohs(addr->v4.sin_port);
 
-        SCTP_DEBUG_PRINTK("sctp_get_port() begins, snum=%d\n", snum);
+        pr_debug("%s: begins, snum:%d\n", __func__, snum);
+
         sctp_local_bh_disable();
 
         if (snum == 0) {
@@ -5961,7 +5951,8 @@ pp_found:
                 int reuse = sk->sk_reuse;
                 struct sock *sk2;
 
-                SCTP_DEBUG_PRINTK("sctp_get_port() found a possible match\n");
+                pr_debug("%s: found a possible match\n", __func__);
+
                 if (pp->fastreuse && sk->sk_reuse &&
                         sk->sk_state != SCTP_SS_LISTENING)
                         goto success;
@@ -5991,7 +5982,8 @@ pp_found:
                                 goto fail_unlock;
                         }
                 }
-                SCTP_DEBUG_PRINTK("sctp_get_port(): Found a match\n");
+
+                pr_debug("%s: found a match\n", __func__);
         }
 pp_not_found:
         /* If there was a hash table miss, create a new port.  */
@@ -6037,7 +6029,6 @@ fail:
  */
 static int sctp_get_port(struct sock *sk, unsigned short snum)
 {
-        long ret;
         union sctp_addr addr;
         struct sctp_af *af = sctp_sk(sk)->pf->af;
 
@@ -6046,15 +6037,13 @@ static int sctp_get_port(struct sock *sk, unsigned short snum)
         addr.v4.sin_port = htons(snum);
 
         /* Note: sk->sk_num gets filled in if ephemeral port request. */
-        ret = sctp_get_port_local(sk, &addr);
-
-        return ret ? 1 : 0;
+        return !!sctp_get_port_local(sk, &addr);
 }
 
 /*
  *  Move a socket to LISTENING state.
  */
-SCTP_STATIC int sctp_listen_start(struct sock *sk, int backlog)
+static int sctp_listen_start(struct sock *sk, int backlog)
 {
         struct sctp_sock *sp = sctp_sk(sk);
         struct sctp_endpoint *ep = sp->ep;
@@ -6341,8 +6330,7 @@ static int sctp_autobind(struct sock *sk)
  * msg_control
  * points here
  */
-SCTP_STATIC int sctp_msghdr_parse(const struct msghdr *msg,
-                                  sctp_cmsgs_t *cmsgs)
+static int sctp_msghdr_parse(const struct msghdr *msg, sctp_cmsgs_t *cmsgs)
 {
         struct cmsghdr *cmsg;
         struct msghdr *my_msg = (struct msghdr *)msg;
@@ -6484,8 +6472,8 @@ static struct sk_buff *sctp_skb_recv_datagram(struct sock *sk, int flags,
 
         timeo = sock_rcvtimeo(sk, noblock);
 
-        SCTP_DEBUG_PRINTK("Timeout: timeo: %ld, MAX: %ld.\n",
-                          timeo, MAX_SCHEDULE_TIMEOUT);
+        pr_debug("%s: timeo:%ld, max:%ld\n", __func__, timeo,
+                 MAX_SCHEDULE_TIMEOUT);
 
         do {
                 /* Again only user level code calls this function,
@@ -6616,8 +6604,8 @@ static int sctp_wait_for_sndbuf(struct sctp_association *asoc, long *timeo_p,
         long current_timeo = *timeo_p;
         DEFINE_WAIT(wait);
 
-        SCTP_DEBUG_PRINTK("wait_for_sndbuf: asoc=%p, timeo=%ld, msg_len=%zu\n",
-                          asoc, (long)(*timeo_p), msg_len);
+        pr_debug("%s: asoc:%p, timeo:%ld, msg_len:%zu\n", __func__, asoc,
+                 *timeo_p, msg_len);
 
         /* Increment the association's refcnt.  */
         sctp_association_hold(asoc);
@@ -6723,8 +6711,7 @@ static int sctp_wait_for_connect(struct sctp_association *asoc, long *timeo_p)
         long current_timeo = *timeo_p;
         DEFINE_WAIT(wait);
 
-        SCTP_DEBUG_PRINTK("%s: asoc=%p, timeo=%ld\n", __func__, asoc,
-                          (long)(*timeo_p));
+        pr_debug("%s: asoc:%p, timeo:%ld\n", __func__, asoc, *timeo_p);
 
         /* Increment the association's refcnt.  */
         sctp_association_hold(asoc);
@@ -6864,7 +6851,7 @@ void sctp_copy_sock(struct sock *newsk, struct sock *sk,
         newsk->sk_reuse = sk->sk_reuse;
 
         newsk->sk_shutdown = sk->sk_shutdown;
-        newsk->sk_destruct = inet_sock_destruct;
+        newsk->sk_destruct = sctp_destruct_sock;
         newsk->sk_family = sk->sk_family;
         newsk->sk_protocol = IPPROTO_SCTP;
         newsk->sk_backlog_rcv = sk->sk_prot->backlog_rcv;
diff --git a/net/sctp/sysctl.c b/net/sctp/sysctl.c
index bf3c6e8fc401..9a5c4c9eddaf 100644
--- a/net/sctp/sysctl.c
+++ b/net/sctp/sysctl.c
@@ -62,12 +62,12 @@ extern long sysctl_sctp_mem[3];
 extern int sysctl_sctp_rmem[3];
 extern int sysctl_sctp_wmem[3];
 
-static int proc_sctp_do_hmac_alg(ctl_table *ctl,
+static int proc_sctp_do_hmac_alg(struct ctl_table *ctl,
                                 int write,
                                 void __user *buffer, size_t *lenp,
 
                                 loff_t *ppos);
-static ctl_table sctp_table[] = {
+static struct ctl_table sctp_table[] = {
         {
                 .procname       = "sctp_mem",
                 .data           = &sysctl_sctp_mem,
@@ -93,7 +93,7 @@ static ctl_table sctp_table[] = {
         { /* sentinel */ }
 };
 
-static ctl_table sctp_net_table[] = {
+static struct ctl_table sctp_net_table[] = {
         {
                 .procname       = "rto_initial",
                 .data           = &init_net.sctp.rto_initial,
@@ -300,14 +300,14 @@ static ctl_table sctp_net_table[] = {
         { /* sentinel */ }
 };
 
-static int proc_sctp_do_hmac_alg(ctl_table *ctl,
+static int proc_sctp_do_hmac_alg(struct ctl_table *ctl,
                                 int write,
                                 void __user *buffer, size_t *lenp,
                                 loff_t *ppos)
 {
         struct net *net = current->nsproxy->net_ns;
         char tmp[8];
-        ctl_table tbl;
+        struct ctl_table tbl;
         int ret;
         int changed = 0;
         char *none = "none";
diff --git a/net/sctp/transport.c b/net/sctp/transport.c
index 098f1d5f769e..bdbbc3fd7c14 100644
--- a/net/sctp/transport.c
+++ b/net/sctp/transport.c
@@ -116,7 +116,7 @@ struct sctp_transport *sctp_transport_new(struct net *net,
 {
         struct sctp_transport *transport;
 
-        transport = t_new(struct sctp_transport, gfp);
+        transport = kzalloc(sizeof(*transport), gfp);
         if (!transport)
                 goto fail;
 
@@ -176,7 +176,10 @@ static void sctp_transport_destroy_rcu(struct rcu_head *head)
  */
 static void sctp_transport_destroy(struct sctp_transport *transport)
 {
-        SCTP_ASSERT(transport->dead, "Transport is not dead", return);
+        if (unlikely(!transport->dead)) {
+                WARN(1, "Attempt to destroy undead transport %p!\n", transport);
+                return;
+        }
 
         call_rcu(&transport->rcu, sctp_transport_destroy_rcu);
 
@@ -317,11 +320,9 @@ void sctp_transport_put(struct sctp_transport *transport)
 /* Update transport's RTO based on the newly calculated RTT. */
 void sctp_transport_update_rto(struct sctp_transport *tp, __u32 rtt)
 {
-        /* Check for valid transport.  */
-        SCTP_ASSERT(tp, "NULL transport", return);
-
-        /* We should not be doing any RTO updates unless rto_pending is set.  */
-        SCTP_ASSERT(tp->rto_pending, "rto_pending not set", return);
+        if (unlikely(!tp->rto_pending))
+                /* We should not be doing any RTO updates unless rto_pending is set.  */
+                pr_debug("%s: rto_pending not set on transport %p!\n", __func__, tp);
 
         if (tp->rttvar || tp->srtt) {
                 struct net *net = sock_net(tp->asoc->base.sk);
@@ -377,9 +378,8 @@ void sctp_transport_update_rto(struct sctp_transport *tp, __u32 rtt)
          */
         tp->rto_pending = 0;
 
-        SCTP_DEBUG_PRINTK("%s: transport: %p, rtt: %d, srtt: %d "
-                          "rttvar: %d, rto: %ld\n", __func__,
-                          tp, rtt, tp->srtt, tp->rttvar, tp->rto);
+        pr_debug("%s: transport:%p, rtt:%d, srtt:%d rttvar:%d, rto:%ld\n",
+                 __func__, tp, rtt, tp->srtt, tp->rttvar, tp->rto);
 }
 
 /* This routine updates the transport's cwnd and partial_bytes_acked
@@ -433,12 +433,11 @@ void sctp_transport_raise_cwnd(struct sctp_transport *transport,
                         cwnd += pmtu;
                 else
                         cwnd += bytes_acked;
-                SCTP_DEBUG_PRINTK("%s: SLOW START: transport: %p, "
-                                  "bytes_acked: %d, cwnd: %d, ssthresh: %d, "
-                                  "flight_size: %d, pba: %d\n",
-                                  __func__,
-                                  transport, bytes_acked, cwnd,
-                                  ssthresh, flight_size, pba);
+
+                pr_debug("%s: slow start: transport:%p, bytes_acked:%d, "
+                         "cwnd:%d, ssthresh:%d, flight_size:%d, pba:%d\n",
+                         __func__, transport, bytes_acked, cwnd, ssthresh,
+                         flight_size, pba);
         } else {
                 /* RFC 2960 7.2.2 Whenever cwnd is greater than ssthresh,
                  * upon each SACK arrival that advances the Cumulative TSN Ack
@@ -459,12 +458,12 @@ void sctp_transport_raise_cwnd(struct sctp_transport *transport,
                         cwnd += pmtu;
                         pba = ((cwnd < pba) ? (pba - cwnd) : 0);
                 }
-                SCTP_DEBUG_PRINTK("%s: CONGESTION AVOIDANCE: "
-                                  "transport: %p, bytes_acked: %d, cwnd: %d, "
-                                  "ssthresh: %d, flight_size: %d, pba: %d\n",
-                                  __func__,
-                                  transport, bytes_acked, cwnd,
-                                  ssthresh, flight_size, pba);
+
+                pr_debug("%s: congestion avoidance: transport:%p, "
+                         "bytes_acked:%d, cwnd:%d, ssthresh:%d, "
+                         "flight_size:%d, pba:%d\n", __func__,
+                         transport, bytes_acked, cwnd, ssthresh,
+                         flight_size, pba);
         }
 
         transport->cwnd = cwnd;
@@ -558,10 +557,10 @@ void sctp_transport_lower_cwnd(struct sctp_transport *transport,
         }
 
         transport->partial_bytes_acked = 0;
-        SCTP_DEBUG_PRINTK("%s: transport: %p reason: %d cwnd: "
-                          "%d ssthresh: %d\n", __func__,
-                          transport, reason,
-                          transport->cwnd, transport->ssthresh);
+
+        pr_debug("%s: transport:%p, reason:%d, cwnd:%d, ssthresh:%d\n",
+                 __func__, transport, reason, transport->cwnd,
+                 transport->ssthresh);
 }
 
 /* Apply Max.Burst limit to the congestion window:
diff --git a/net/sctp/tsnmap.c b/net/sctp/tsnmap.c
index 396c45174e5b..b46019568a86 100644
--- a/net/sctp/tsnmap.c
+++ b/net/sctp/tsnmap.c
@@ -161,8 +161,8 @@ int sctp_tsnmap_mark(struct sctp_tsnmap *map, __u32 tsn,
 
 
 /* Initialize a Gap Ack Block iterator from memory being provided.  */
-SCTP_STATIC void sctp_tsnmap_iter_init(const struct sctp_tsnmap *map,
-                                       struct sctp_tsnmap_iter *iter)
+static void sctp_tsnmap_iter_init(const struct sctp_tsnmap *map,
+                                  struct sctp_tsnmap_iter *iter)
 {
         /* Only start looking one past the Cumulative TSN Ack Point.  */
         iter->start = map->cumulative_tsn_ack_point + 1;
@@ -171,9 +171,9 @@ SCTP_STATIC void sctp_tsnmap_iter_init(const struct sctp_tsnmap *map,
 /* Get the next Gap Ack Blocks. Returns 0 if there was not another block
  * to get.
  */
-SCTP_STATIC int sctp_tsnmap_next_gap_ack(const struct sctp_tsnmap *map,
-                                         struct sctp_tsnmap_iter *iter,
-                                         __u16 *start, __u16 *end)
+static int sctp_tsnmap_next_gap_ack(const struct sctp_tsnmap *map,
+                                    struct sctp_tsnmap_iter *iter,
+                                    __u16 *start, __u16 *end)
 {
         int ended = 0;
         __u16 start_ = 0, end_ = 0, offset;
diff --git a/net/sctp/ulpevent.c b/net/sctp/ulpevent.c
index 10c018a5b9fe..44a45dbee4df 100644
--- a/net/sctp/ulpevent.c
+++ b/net/sctp/ulpevent.c
@@ -57,9 +57,9 @@ static void sctp_ulpevent_release_frag_data(struct sctp_ulpevent *event);
 
 
 /* Initialize an ULP event from an given skb.  */
-SCTP_STATIC void sctp_ulpevent_init(struct sctp_ulpevent *event,
-                                    int msg_flags,
-                                    unsigned int len)
+static void sctp_ulpevent_init(struct sctp_ulpevent *event,
+                               int msg_flags,
+                               unsigned int len)
 {
         memset(event, 0, sizeof(struct sctp_ulpevent));
         event->msg_flags = msg_flags;
@@ -67,8 +67,8 @@ SCTP_STATIC void sctp_ulpevent_init(struct sctp_ulpevent *event,
 }
 
 /* Create a new sctp_ulpevent.  */
-SCTP_STATIC struct sctp_ulpevent *sctp_ulpevent_new(int size, int msg_flags,
-                                                    gfp_t gfp)
+static struct sctp_ulpevent *sctp_ulpevent_new(int size, int msg_flags,
+                                               gfp_t gfp)
 {
         struct sctp_ulpevent *event;
         struct sk_buff *skb;
diff --git a/net/socket.c b/net/socket.c
index 4ca1526db756..45afa648364a 100644
--- a/net/socket.c
+++ b/net/socket.c
@@ -104,6 +104,12 @@
 #include <linux/route.h>
 #include <linux/sockios.h>
 #include <linux/atalk.h>
+#include <net/ll_poll.h>
+
+#ifdef CONFIG_NET_LL_RX_POLL
+unsigned int sysctl_net_ll_read __read_mostly;
+unsigned int sysctl_net_ll_poll __read_mostly;
+#endif
 
 static int sock_no_open(struct inode *irrelevant, struct file *dontcare);
 static ssize_t sock_aio_read(struct kiocb *iocb, const struct iovec *iov,
@@ -1142,13 +1148,24 @@ EXPORT_SYMBOL(sock_create_lite);
 /* No kernel lock held - perfect */
 static unsigned int sock_poll(struct file *file, poll_table *wait)
 {
+        unsigned int busy_flag = 0;
         struct socket *sock;
 
         /*
          *      We can't return errors to poll, so it's either yes or no.
          */
         sock = file->private_data;
-        return sock->ops->poll(file, sock, wait);
+
+        if (sk_can_busy_loop(sock->sk)) {
+                /* this socket can poll_ll so tell the system call */
+                busy_flag = POLL_BUSY_LOOP;
+
+                /* once, only if requested by syscall */
+                if (wait && (wait->_key & POLL_BUSY_LOOP))
+                        sk_busy_loop(sock->sk, 1);
+        }
+
+        return busy_flag | sock->ops->poll(file, sock, wait);
 }
 
 static int sock_mmap(struct file *file, struct vm_area_struct *vma)
@@ -2635,7 +2652,9 @@ static int __init sock_init(void)
          */
 
 #ifdef CONFIG_NETFILTER
-        netfilter_init();
+        err = netfilter_init();
+        if (err)
+                goto out;
 #endif
 
 #ifdef CONFIG_NETWORK_PHY_TIMESTAMPING
diff --git a/net/sunrpc/auth_gss/gss_mech_switch.c b/net/sunrpc/auth_gss/gss_mech_switch.c
index defa9d33925c..27ce26240932 100644
--- a/net/sunrpc/auth_gss/gss_mech_switch.c
+++ b/net/sunrpc/auth_gss/gss_mech_switch.c
@@ -139,11 +139,12 @@ void gss_mech_unregister(struct gss_api_mech *gm)
 }
 EXPORT_SYMBOL_GPL(gss_mech_unregister);
 
-static struct gss_api_mech *gss_mech_get(struct gss_api_mech *gm)
+struct gss_api_mech *gss_mech_get(struct gss_api_mech *gm)
 {
         __module_get(gm->gm_owner);
         return gm;
 }
+EXPORT_SYMBOL(gss_mech_get);
 
 static struct gss_api_mech *
 _gss_mech_get_by_name(const char *name)
@@ -360,6 +361,7 @@ gss_pseudoflavor_to_service(struct gss_api_mech *gm, u32 pseudoflavor)
         }
         return 0;
 }
+EXPORT_SYMBOL(gss_pseudoflavor_to_service);
 
 char *
 gss_service_to_auth_domain_name(struct gss_api_mech *gm, u32 service)
@@ -379,6 +381,7 @@ gss_mech_put(struct gss_api_mech * gm)
         if (gm)
                 module_put(gm->gm_owner);
 }
+EXPORT_SYMBOL(gss_mech_put);
 
 /* The mech could probably be determined from the token instead, but it's just
  * as easy for now to pass it in. */
diff --git a/net/sunrpc/auth_gss/svcauth_gss.c b/net/sunrpc/auth_gss/svcauth_gss.c
index 29b4ba93ab3c..d0347d148b34 100644
--- a/net/sunrpc/auth_gss/svcauth_gss.c
+++ b/net/sunrpc/auth_gss/svcauth_gss.c
@@ -377,8 +377,7 @@ rsc_init(struct cache_head *cnew, struct cache_head *ctmp)
         new->handle.data = tmp->handle.data;
         tmp->handle.data = NULL;
         new->mechctx = NULL;
-        new->cred.cr_group_info = NULL;
-        new->cred.cr_principal = NULL;
+        init_svc_cred(&new->cred);
 }
 
 static void
@@ -392,9 +391,7 @@ update_rsc(struct cache_head *cnew, struct cache_head *ctmp)
         memset(&new->seqdata, 0, sizeof(new->seqdata));
         spin_lock_init(&new->seqdata.sd_lock);
         new->cred = tmp->cred;
-        tmp->cred.cr_group_info = NULL;
-        new->cred.cr_principal = tmp->cred.cr_principal;
-        tmp->cred.cr_principal = NULL;
+        init_svc_cred(&tmp->cred);
 }
 
 static struct cache_head *
@@ -487,7 +484,7 @@ static int rsc_parse(struct cache_detail *cd,
                 len = qword_get(&mesg, buf, mlen);
                 if (len < 0)
                         goto out;
-                gm = gss_mech_get_by_name(buf);
+                gm = rsci.cred.cr_gss_mech = gss_mech_get_by_name(buf);
                 status = -EOPNOTSUPP;
                 if (!gm)
                         goto out;
@@ -517,7 +514,6 @@ static int rsc_parse(struct cache_detail *cd,
         rscp = rsc_update(cd, &rsci, rscp);
         status = 0;
 out:
-        gss_mech_put(gm);
         rsc_free(&rsci);
         if (rscp)
                 cache_put(&rscp->h, cd);
@@ -1330,7 +1326,7 @@ static int wait_for_gss_proxy(struct net *net, struct file *file)
 static ssize_t write_gssp(struct file *file, const char __user *buf,
                          size_t count, loff_t *ppos)
 {
-        struct net *net = PDE_DATA(file->f_path.dentry->d_inode);
+        struct net *net = PDE_DATA(file_inode(file));
         char tbuf[20];
         unsigned long i;
         int res;
@@ -1358,7 +1354,7 @@ static ssize_t write_gssp(struct file *file, const char __user *buf,
 static ssize_t read_gssp(struct file *file, char __user *buf,
                          size_t count, loff_t *ppos)
 {
-        struct net *net = PDE_DATA(file->f_path.dentry->d_inode);
+        struct net *net = PDE_DATA(file_inode(file));
         unsigned long p = *ppos;
         char tbuf[10];
         size_t len;
diff --git a/net/sunrpc/cache.c b/net/sunrpc/cache.c
index 80fe5c86efd1..49eb37010aa3 100644
--- a/net/sunrpc/cache.c
+++ b/net/sunrpc/cache.c
@@ -50,12 +50,6 @@ static void cache_init(struct cache_head *h)
         h->last_refresh = now;
 }
 
-static inline int cache_is_expired(struct cache_detail *detail, struct cache_head *h)
-{
-        return  (h->expiry_time < seconds_since_boot()) ||
-                (detail->flush_time > h->last_refresh);
-}
-
 struct cache_head *sunrpc_cache_lookup(struct cache_detail *detail,
                                        struct cache_head *key, int hash)
 {
@@ -201,7 +195,7 @@ static int cache_make_upcall(struct cache_detail *cd, struct cache_head *h)
         return sunrpc_cache_pipe_upcall(cd, h);
 }
 
-static inline int cache_is_valid(struct cache_detail *detail, struct cache_head *h)
+static inline int cache_is_valid(struct cache_head *h)
 {
         if (!test_bit(CACHE_VALID, &h->flags))
                 return -EAGAIN;
@@ -227,16 +221,15 @@ static int try_to_negate_entry(struct cache_detail *detail, struct cache_head *h
         int rv;
 
         write_lock(&detail->hash_lock);
-        rv = cache_is_valid(detail, h);
-        if (rv != -EAGAIN) {
-                write_unlock(&detail->hash_lock);
-                return rv;
+        rv = cache_is_valid(h);
+        if (rv == -EAGAIN) {
+                set_bit(CACHE_NEGATIVE, &h->flags);
+                cache_fresh_locked(h, seconds_since_boot()+CACHE_NEW_EXPIRY);
+                rv = -ENOENT;
         }
-        set_bit(CACHE_NEGATIVE, &h->flags);
-        cache_fresh_locked(h, seconds_since_boot()+CACHE_NEW_EXPIRY);
         write_unlock(&detail->hash_lock);
         cache_fresh_unlocked(h, detail);
-        return -ENOENT;
+        return rv;
 }
 
 /*
@@ -260,7 +253,7 @@ int cache_check(struct cache_detail *detail,
         long refresh_age, age;
 
         /* First decide return status as best we can */
-        rv = cache_is_valid(detail, h);
+        rv = cache_is_valid(h);
 
         /* now see if we want to start an upcall */
         refresh_age = (h->expiry_time - h->last_refresh);
@@ -269,19 +262,17 @@ int cache_check(struct cache_detail *detail,
         if (rqstp == NULL) {
                 if (rv == -EAGAIN)
                         rv = -ENOENT;
-        } else if (rv == -EAGAIN || age > refresh_age/2) {
+        } else if (rv == -EAGAIN ||
+                   (h->expiry_time != 0 && age > refresh_age/2)) {
                 dprintk("RPC:       Want update, refage=%ld, age=%ld\n",
                                 refresh_age, age);
                 if (!test_and_set_bit(CACHE_PENDING, &h->flags)) {
                         switch (cache_make_upcall(detail, h)) {
                         case -EINVAL:
-                                clear_bit(CACHE_PENDING, &h->flags);
-                                cache_revisit_request(h);
                                 rv = try_to_negate_entry(detail, h);
                                 break;
                         case -EAGAIN:
-                                clear_bit(CACHE_PENDING, &h->flags);
-                                cache_revisit_request(h);
+                                cache_fresh_unlocked(h, detail);
                                 break;
                         }
                 }
@@ -293,7 +284,7 @@ int cache_check(struct cache_detail *detail,
                          * Request was not deferred; handle it as best
                          * we can ourselves:
                          */
-                        rv = cache_is_valid(detail, h);
+                        rv = cache_is_valid(h);
                         if (rv == -EAGAIN)
                                 rv = -ETIMEDOUT;
                 }
@@ -310,7 +301,7 @@ EXPORT_SYMBOL_GPL(cache_check);
  * a current pointer into that list and into the table
  * for that entry.
  *
- * Each time clean_cache is called it finds the next non-empty entry
+ * Each time cache_clean is called it finds the next non-empty entry
  * in the current table and walks the list in that entry
  * looking for entries that can be removed.
  *
@@ -457,9 +448,8 @@ static int cache_clean(void)
                         current_index ++;
                 spin_unlock(&cache_list_lock);
                 if (ch) {
-                        if (test_and_clear_bit(CACHE_PENDING, &ch->flags))
-                                cache_dequeue(current_detail, ch);
-                        cache_revisit_request(ch);
+                        set_bit(CACHE_CLEANED, &ch->flags);
+                        cache_fresh_unlocked(ch, d);
                         cache_put(ch, d);
                 }
         } else
@@ -1036,23 +1026,32 @@ static int cache_release(struct inode *inode, struct file *filp,
 
 static void cache_dequeue(struct cache_detail *detail, struct cache_head *ch)
 {
-        struct cache_queue *cq;
+        struct cache_queue *cq, *tmp;
+        struct cache_request *cr;
+        struct list_head dequeued;
+
+        INIT_LIST_HEAD(&dequeued);
         spin_lock(&queue_lock);
-        list_for_each_entry(cq, &detail->queue, list)
+        list_for_each_entry_safe(cq, tmp, &detail->queue, list)
                 if (!cq->reader) {
-                        struct cache_request *cr = container_of(cq, struct cache_request, q);
+                        cr = container_of(cq, struct cache_request, q);
                         if (cr->item != ch)
                                 continue;
+                        if (test_bit(CACHE_PENDING, &ch->flags))
+                                /* Lost a race and it is pending again */
+                                break;
                         if (cr->readers != 0)
                                 continue;
-                        list_del(&cr->q.list);
-                        spin_unlock(&queue_lock);
-                        cache_put(cr->item, detail);
-                        kfree(cr->buf);
-                        kfree(cr);
-                        return;
+                        list_move(&cr->q.list, &dequeued);
                 }
         spin_unlock(&queue_lock);
+        while (!list_empty(&dequeued)) {
+                cr = list_entry(dequeued.next, struct cache_request, q.list);
+                list_del(&cr->q.list);
+                cache_put(cr->item, detail);
+                kfree(cr->buf);
+                kfree(cr);
+        }
 }
 
 /*
@@ -1166,6 +1165,7 @@ int sunrpc_cache_pipe_upcall(struct cache_detail *detail, struct cache_head *h)
 
         char *buf;
         struct cache_request *crq;
+        int ret = 0;
 
         if (!detail->cache_request)
                 return -EINVAL;
@@ -1174,6 +1174,9 @@ int sunrpc_cache_pipe_upcall(struct cache_detail *detail, struct cache_head *h)
                 warn_no_listener(detail);
                 return -EINVAL;
         }
+        if (test_bit(CACHE_CLEANED, &h->flags))
+                /* Too late to make an upcall */
+                return -EAGAIN;
 
         buf = kmalloc(PAGE_SIZE, GFP_KERNEL);
         if (!buf)
@@ -1191,10 +1194,18 @@ int sunrpc_cache_pipe_upcall(struct cache_detail *detail, struct cache_head *h)
         crq->len = 0;
         crq->readers = 0;
         spin_lock(&queue_lock);
-        list_add_tail(&crq->q.list, &detail->queue);
+        if (test_bit(CACHE_PENDING, &h->flags))
+                list_add_tail(&crq->q.list, &detail->queue);
+        else
+                /* Lost a race, no longer PENDING, so don't enqueue */
+                ret = -EAGAIN;
         spin_unlock(&queue_lock);
         wake_up(&queue_wait);
-        return 0;
+        if (ret == -EAGAIN) {
+                kfree(buf);
+                kfree(crq);
+        }
+        return ret;
 }
 EXPORT_SYMBOL_GPL(sunrpc_cache_pipe_upcall);
 
diff --git a/net/sunrpc/clnt.c b/net/sunrpc/clnt.c
index 5a750b9c3640..aa401560777b 100644
--- a/net/sunrpc/clnt.c
+++ b/net/sunrpc/clnt.c
@@ -157,20 +157,15 @@ static struct dentry *rpc_setup_pipedir_sb(struct super_block *sb,
 }
 
 static int
-rpc_setup_pipedir(struct rpc_clnt *clnt, const char *dir_name)
+rpc_setup_pipedir(struct rpc_clnt *clnt, const char *dir_name,
+                  struct super_block *pipefs_sb)
 {
-        struct net *net = rpc_net_ns(clnt);
-        struct super_block *pipefs_sb;
         struct dentry *dentry;
 
         clnt->cl_dentry = NULL;
         if (dir_name == NULL)
                 return 0;
-        pipefs_sb = rpc_get_sb_net(net);
-        if (!pipefs_sb)
-                return 0;
         dentry = rpc_setup_pipedir_sb(pipefs_sb, clnt, dir_name);
-        rpc_put_sb_net(net);
         if (IS_ERR(dentry))
                 return PTR_ERR(dentry);
         clnt->cl_dentry = dentry;
@@ -182,6 +177,8 @@ static inline int rpc_clnt_skip_event(struct rpc_clnt *clnt, unsigned long event
         if (((event == RPC_PIPEFS_MOUNT) && clnt->cl_dentry) ||
             ((event == RPC_PIPEFS_UMOUNT) && !clnt->cl_dentry))
                 return 1;
+        if ((event == RPC_PIPEFS_MOUNT) && atomic_read(&clnt->cl_count) == 0)
+                return 1;
         return 0;
 }
 
@@ -241,8 +238,6 @@ static struct rpc_clnt *rpc_get_client_for_event(struct net *net, int event)
                         continue;
                 if (rpc_clnt_skip_event(clnt, event))
                         continue;
-                if (atomic_inc_not_zero(&clnt->cl_count) == 0)
-                        continue;
                 spin_unlock(&sn->rpc_client_lock);
                 return clnt;
         }
@@ -259,7 +254,6 @@ static int rpc_pipefs_event(struct notifier_block *nb, unsigned long event,
 
         while ((clnt = rpc_get_client_for_event(sb->s_fs_info, event))) {
                 error = __rpc_pipefs_event(clnt, event, sb);
-                rpc_release_client(clnt);
                 if (error)
                         break;
         }
@@ -289,12 +283,48 @@ static void rpc_clnt_set_nodename(struct rpc_clnt *clnt, const char *nodename)
         memcpy(clnt->cl_nodename, nodename, clnt->cl_nodelen);
 }
 
+static int rpc_client_register(const struct rpc_create_args *args,
+                               struct rpc_clnt *clnt)
+{
+        const struct rpc_program *program = args->program;
+        struct rpc_auth *auth;
+        struct net *net = rpc_net_ns(clnt);
+        struct super_block *pipefs_sb;
+        int err;
+
+        pipefs_sb = rpc_get_sb_net(net);
+        if (pipefs_sb) {
+                err = rpc_setup_pipedir(clnt, program->pipe_dir_name, pipefs_sb);
+                if (err)
+                        goto out;
+        }
+
+        rpc_register_client(clnt);
+        if (pipefs_sb)
+                rpc_put_sb_net(net);
+
+        auth = rpcauth_create(args->authflavor, clnt);
+        if (IS_ERR(auth)) {
+                dprintk("RPC:       Couldn't create auth handle (flavor %u)\n",
+                                args->authflavor);
+                err = PTR_ERR(auth);
+                goto err_auth;
+        }
+        return 0;
+err_auth:
+        pipefs_sb = rpc_get_sb_net(net);
+        __rpc_clnt_remove_pipedir(clnt);
+out:
+        if (pipefs_sb)
+                rpc_put_sb_net(net);
+        return err;
+}
+
 static struct rpc_clnt * rpc_new_client(const struct rpc_create_args *args, struct rpc_xprt *xprt)
 {
         const struct rpc_program *program = args->program;
         const struct rpc_version *version;
         struct rpc_clnt         *clnt = NULL;
-        struct rpc_auth         *auth;
         int err;
 
         /* sanity check the name before trying to print it */
@@ -354,25 +384,14 @@ static struct rpc_clnt * rpc_new_client(const struct rpc_create_args *args, stru
 
         atomic_set(&clnt->cl_count, 1);
 
-        err = rpc_setup_pipedir(clnt, program->pipe_dir_name);
-        if (err < 0)
-                goto out_no_path;
-
-        auth = rpcauth_create(args->authflavor, clnt);
-        if (IS_ERR(auth)) {
-                dprintk("RPC:       Couldn't create auth handle (flavor %u)\n",
-                                args->authflavor);
-                err = PTR_ERR(auth);
-                goto out_no_auth;
-        }
-
         /* save the nodename */
         rpc_clnt_set_nodename(clnt, utsname()->nodename);
-        rpc_register_client(clnt);
+
+        err = rpc_client_register(args, clnt);
+        if (err)
+                goto out_no_path;
         return clnt;
 
-out_no_auth:
-        rpc_clnt_remove_pipedir(clnt);
 out_no_path:
         kfree(clnt->cl_principal);
 out_no_principal:
@@ -637,8 +656,8 @@ rpc_free_client(struct rpc_clnt *clnt)
                         rcu_dereference(clnt->cl_xprt)->servername);
         if (clnt->cl_parent != clnt)
                 rpc_release_client(clnt->cl_parent);
-        rpc_unregister_client(clnt);
         rpc_clnt_remove_pipedir(clnt);
+        rpc_unregister_client(clnt);
         rpc_free_iostats(clnt->cl_metrics);
         kfree(clnt->cl_principal);
         clnt->cl_metrics = NULL;
diff --git a/net/sunrpc/rpc_pipe.c b/net/sunrpc/rpc_pipe.c
index e7ce4b3eb0bd..61239a2cb786 100644
--- a/net/sunrpc/rpc_pipe.c
+++ b/net/sunrpc/rpc_pipe.c
@@ -480,6 +480,23 @@ static const struct dentry_operations rpc_dentry_operations = {
         .d_delete = rpc_delete_dentry,
 };
 
+/*
+ * Lookup the data. This is trivial - if the dentry didn't already
+ * exist, we know it is negative.
+ */
+static struct dentry *
+rpc_lookup(struct inode *dir, struct dentry *dentry, unsigned int flags)
+{
+        if (dentry->d_name.len > NAME_MAX)
+                return ERR_PTR(-ENAMETOOLONG);
+        d_add(dentry, NULL);
+        return NULL;
+}
+
+static const struct inode_operations rpc_dir_inode_operations = {
+        .lookup         = rpc_lookup,
+};
+
 static struct inode *
 rpc_get_inode(struct super_block *sb, umode_t mode)
 {
@@ -492,7 +509,7 @@ rpc_get_inode(struct super_block *sb, umode_t mode)
         switch (mode & S_IFMT) {
         case S_IFDIR:
                 inode->i_fop = &simple_dir_operations;
-                inode->i_op = &simple_dir_inode_operations;
+                inode->i_op = &rpc_dir_inode_operations;
                 inc_nlink(inode);
         default:
                 break;
@@ -666,10 +683,8 @@ static struct dentry *__rpc_lookup_create_exclusive(struct dentry *parent,
                 if (!dentry)
                         return ERR_PTR(-ENOMEM);
         }
-        if (dentry->d_inode == NULL) {
-                d_set_d_op(dentry, &rpc_dentry_operations);
+        if (dentry->d_inode == NULL)
                 return dentry;
-        }
         dput(dentry);
         return ERR_PTR(-EEXIST);
 }
@@ -1116,6 +1131,7 @@ rpc_fill_super(struct super_block *sb, void *data, int silent)
         sb->s_blocksize_bits = PAGE_CACHE_SHIFT;
         sb->s_magic = RPCAUTH_GSSMAGIC;
         sb->s_op = &s_ops;
+        sb->s_d_op = &rpc_dentry_operations;
         sb->s_time_gran = 1;
 
         inode = rpc_get_inode(sb, S_IFDIR | S_IRUGO | S_IXUGO);
@@ -1126,6 +1142,7 @@ rpc_fill_super(struct super_block *sb, void *data, int silent)
                 return -ENOMEM;
         dprintk("RPC:       sending pipefs MOUNT notification for net %p%s\n",
                 net, NET_NAME(net));
+        mutex_lock(&sn->pipefs_sb_lock);
         sn->pipefs_sb = sb;
         err = blocking_notifier_call_chain(&rpc_pipefs_notifier_list,
                                            RPC_PIPEFS_MOUNT,
@@ -1133,6 +1150,7 @@ rpc_fill_super(struct super_block *sb, void *data, int silent)
         if (err)
                 goto err_depopulate;
         sb->s_fs_info = get_net(net);
+        mutex_unlock(&sn->pipefs_sb_lock);
         return 0;
 
 err_depopulate:
@@ -1141,6 +1159,7 @@ err_depopulate:
                                            sb);
         sn->pipefs_sb = NULL;
         __rpc_depopulate(root, files, RPCAUTH_lockd, RPCAUTH_RootEOF);
+        mutex_unlock(&sn->pipefs_sb_lock);
         return err;
 }
 
@@ -1162,12 +1181,12 @@ static void rpc_kill_sb(struct super_block *sb)
                 goto out;
         }
         sn->pipefs_sb = NULL;
-        mutex_unlock(&sn->pipefs_sb_lock);
         dprintk("RPC:       sending pipefs UMOUNT notification for net %p%s\n",
                 net, NET_NAME(net));
         blocking_notifier_call_chain(&rpc_pipefs_notifier_list,
                                            RPC_PIPEFS_UMOUNT,
                                            sb);
+        mutex_unlock(&sn->pipefs_sb_lock);
         put_net(net);
 out:
         kill_litter_super(sb);
diff --git a/net/sunrpc/sched.c b/net/sunrpc/sched.c
index 5356b120dbf8..93a7a4e94d80 100644
--- a/net/sunrpc/sched.c
+++ b/net/sunrpc/sched.c
@@ -254,7 +254,7 @@ static int rpc_wait_bit_killable(void *word)
 {
         if (fatal_signal_pending(current))
                 return -ERESTARTSYS;
-        freezable_schedule();
+        freezable_schedule_unsafe();
         return 0;
 }
 
@@ -446,20 +446,6 @@ static void rpc_wake_up_task_queue_locked(struct rpc_wait_queue *queue, struct r
 }
 
 /*
- * Tests whether rpc queue is empty
- */
-int rpc_queue_empty(struct rpc_wait_queue *queue)
-{
-        int res;
-
-        spin_lock_bh(&queue->lock);
-        res = queue->qlen;
-        spin_unlock_bh(&queue->lock);
-        return res == 0;
-}
-EXPORT_SYMBOL_GPL(rpc_queue_empty);
-
-/*
  * Wake up a task on a specific queue
  */
 void rpc_wake_up_queued_task(struct rpc_wait_queue *queue, struct rpc_task *task)
@@ -804,7 +790,6 @@ static void __rpc_execute(struct rpc_task *task)
                         task->tk_flags |= RPC_TASK_KILLED;
                         rpc_exit(task, -ERESTARTSYS);
                 }
-                rpc_set_running(task);
                 dprintk("RPC: %5u sync task resuming\n", task->tk_pid);
         }
 
@@ -825,9 +810,11 @@ static void __rpc_execute(struct rpc_task *task)
  */
 void rpc_execute(struct rpc_task *task)
 {
+        bool is_async = RPC_IS_ASYNC(task);
+
         rpc_set_active(task);
         rpc_make_runnable(task);
-        if (!RPC_IS_ASYNC(task))
+        if (!is_async)
                 __rpc_execute(task);
 }
 
diff --git a/net/sunrpc/svc.c b/net/sunrpc/svc.c
index 89a588b4478b..b974571126fe 100644
--- a/net/sunrpc/svc.c
+++ b/net/sunrpc/svc.c
@@ -740,7 +740,7 @@ svc_set_num_threads(struct svc_serv *serv, struct svc_pool *pool, int nrservs)
 
                 __module_get(serv->sv_module);
                 task = kthread_create_on_node(serv->sv_function, rqstp,
-                                              node, serv->sv_name);
+                                              node, "%s", serv->sv_name);
                 if (IS_ERR(task)) {
                         error = PTR_ERR(task);
                         module_put(serv->sv_module);
diff --git a/net/sunrpc/svcauth_unix.c b/net/sunrpc/svcauth_unix.c
index 06bdf5a1082c..621ca7b4a155 100644
--- a/net/sunrpc/svcauth_unix.c
+++ b/net/sunrpc/svcauth_unix.c
@@ -347,13 +347,13 @@ ip_map_cached_get(struct svc_xprt *xprt)
                 spin_lock(&xprt->xpt_lock);
                 ipm = xprt->xpt_auth_cache;
                 if (ipm != NULL) {
-                        if (!cache_valid(&ipm->h)) {
+                        sn = net_generic(xprt->xpt_net, sunrpc_net_id);
+                        if (cache_is_expired(sn->ip_map_cache, &ipm->h)) {
                                 /*
                                  * The entry has been invalidated since it was
                                  * remembered, e.g. by a second mount from the
                                  * same IP address.
                                  */
-                                sn = net_generic(xprt->xpt_net, sunrpc_net_id);
                                 xprt->xpt_auth_cache = NULL;
                                 spin_unlock(&xprt->xpt_lock);
                                 cache_put(&ipm->h, sn->ip_map_cache);
@@ -493,8 +493,6 @@ static int unix_gid_parse(struct cache_detail *cd,
         if (rv)
                 return -EINVAL;
         uid = make_kuid(&init_user_ns, id);
-        if (!uid_valid(uid))
-                return -EINVAL;
         ug.uid = uid;
 
         expiry = get_expiry(&mesg);
diff --git a/net/sunrpc/svcsock.c b/net/sunrpc/svcsock.c
index 0f679df7d072..305374d4fb98 100644
--- a/net/sunrpc/svcsock.c
+++ b/net/sunrpc/svcsock.c
@@ -917,7 +917,10 @@ static void svc_tcp_clear_pages(struct svc_sock *svsk)
         len = svsk->sk_datalen;
         npages = (len + PAGE_SIZE - 1) >> PAGE_SHIFT;
         for (i = 0; i < npages; i++) {
-                BUG_ON(svsk->sk_pages[i] == NULL);
+                if (svsk->sk_pages[i] == NULL) {
+                        WARN_ON_ONCE(1);
+                        continue;
+                }
                 put_page(svsk->sk_pages[i]);
                 svsk->sk_pages[i] = NULL;
         }
@@ -1092,8 +1095,10 @@ static int svc_tcp_recvfrom(struct svc_rqst *rqstp)
                 goto err_noclose;
         }
 
-        if (svc_sock_reclen(svsk) < 8)
+        if (svsk->sk_datalen < 8) {
+                svsk->sk_datalen = 0;
                 goto err_delete; /* client is nuts. */
+        }
 
         rqstp->rq_arg.len = svsk->sk_datalen;
         rqstp->rq_arg.page_base = 0;
diff --git a/net/sunrpc/sysctl.c b/net/sunrpc/sysctl.c
index af7d339add9d..c99c58e2ee66 100644
--- a/net/sunrpc/sysctl.c
+++ b/net/sunrpc/sysctl.c
@@ -40,7 +40,7 @@ EXPORT_SYMBOL_GPL(nlm_debug);
 #ifdef RPC_DEBUG
 
 static struct ctl_table_header *sunrpc_table_header;
-static ctl_table                sunrpc_table[];
+static struct ctl_table sunrpc_table[];
 
 void
 rpc_register_sysctl(void)
@@ -58,7 +58,7 @@ rpc_unregister_sysctl(void)
         }
 }
 
-static int proc_do_xprt(ctl_table *table, int write,
+static int proc_do_xprt(struct ctl_table *table, int write,
                         void __user *buffer, size_t *lenp, loff_t *ppos)
 {
         char tmpbuf[256];
@@ -73,7 +73,7 @@ static int proc_do_xprt(ctl_table *table, int write,
 }
 
 static int
-proc_dodebug(ctl_table *table, int write,
+proc_dodebug(struct ctl_table *table, int write,
                                 void __user *buffer, size_t *lenp, loff_t *ppos)
 {
         char            tmpbuf[20], c, *s;
@@ -135,7 +135,7 @@ done:
 }
 
 
-static ctl_table debug_table[] = {
+static struct ctl_table debug_table[] = {
         {
                 .procname       = "rpc_debug",
                 .data           = &rpc_debug,
@@ -173,7 +173,7 @@ static ctl_table debug_table[] = {
         { }
 };
 
-static ctl_table sunrpc_table[] = {
+static struct ctl_table sunrpc_table[] = {
         {
                 .procname       = "sunrpc",
                 .mode           = 0555,
diff --git a/net/sunrpc/xprtrdma/svc_rdma.c b/net/sunrpc/xprtrdma/svc_rdma.c
index 8343737e85f4..c1b6270262c2 100644
--- a/net/sunrpc/xprtrdma/svc_rdma.c
+++ b/net/sunrpc/xprtrdma/svc_rdma.c
@@ -84,7 +84,7 @@ struct workqueue_struct *svc_rdma_wq;
  * resets the associated statistic to zero. Any read returns it's
  * current value.
  */
-static int read_reset_stat(ctl_table *table, int write,
+static int read_reset_stat(struct ctl_table *table, int write,
                            void __user *buffer, size_t *lenp,
                            loff_t *ppos)
 {
@@ -119,7 +119,7 @@ static int read_reset_stat(ctl_table *table, int write,
 }
 
 static struct ctl_table_header *svcrdma_table_header;
-static ctl_table svcrdma_parm_table[] = {
+static struct ctl_table svcrdma_parm_table[] = {
         {
                 .procname       = "max_requests",
                 .data           = &svcrdma_max_requests,
@@ -214,7 +214,7 @@ static ctl_table svcrdma_parm_table[] = {
         { },
 };
 
-static ctl_table svcrdma_table[] = {
+static struct ctl_table svcrdma_table[] = {
         {
                 .procname       = "svc_rdma",
                 .mode           = 0555,
@@ -223,7 +223,7 @@ static ctl_table svcrdma_table[] = {
         { },
 };
 
-static ctl_table svcrdma_root_table[] = {
+static struct ctl_table svcrdma_root_table[] = {
         {
                 .procname       = "sunrpc",
                 .mode           = 0555,
diff --git a/net/sunrpc/xprtrdma/transport.c b/net/sunrpc/xprtrdma/transport.c
index 794312f22b9b..285dc0884115 100644
--- a/net/sunrpc/xprtrdma/transport.c
+++ b/net/sunrpc/xprtrdma/transport.c
@@ -86,7 +86,7 @@ static unsigned int max_memreg = RPCRDMA_LAST - 1;
 
 static struct ctl_table_header *sunrpc_table_header;
 
-static ctl_table xr_tunables_table[] = {
+static struct ctl_table xr_tunables_table[] = {
         {
                 .procname       = "rdma_slot_table_entries",
                 .data           = &xprt_rdma_slot_table_entries,
@@ -138,7 +138,7 @@ static ctl_table xr_tunables_table[] = {
         { },
 };
 
-static ctl_table sunrpc_table[] = {
+static struct ctl_table sunrpc_table[] = {
         {
                 .procname       = "sunrpc",
                 .mode           = 0555,
diff --git a/net/sunrpc/xprtsock.c b/net/sunrpc/xprtsock.c
index ffd50348a509..ddf0602603bd 100644
--- a/net/sunrpc/xprtsock.c
+++ b/net/sunrpc/xprtsock.c
@@ -87,7 +87,7 @@ static struct ctl_table_header *sunrpc_table_header;
  * FIXME: changing the UDP slot table size should also resize the UDP
  *        socket buffers for existing UDP transports
  */
-static ctl_table xs_tunables_table[] = {
+static struct ctl_table xs_tunables_table[] = {
         {
                 .procname       = "udp_slot_table_entries",
                 .data           = &xprt_udp_slot_table_entries,
@@ -143,7 +143,7 @@ static ctl_table xs_tunables_table[] = {
         { },
 };
 
-static ctl_table sunrpc_table[] = {
+static struct ctl_table sunrpc_table[] = {
         {
                 .procname       = "sunrpc",
                 .mode           = 0555,
@@ -2534,7 +2534,6 @@ static struct rpc_xprt_ops bc_tcp_ops = {
         .reserve_xprt           = xprt_reserve_xprt,
         .release_xprt           = xprt_release_xprt,
         .alloc_slot             = xprt_alloc_slot,
-        .rpcbind                = xs_local_rpcbind,
         .buf_alloc              = bc_malloc,
         .buf_free               = bc_free,
         .send_request           = bc_send_request,
diff --git a/net/tipc/Makefile b/net/tipc/Makefile
index 4df8e02d9008..b282f7130d2b 100644
--- a/net/tipc/Makefile
+++ b/net/tipc/Makefile
@@ -8,6 +8,7 @@ tipc-y	+= addr.o bcast.o bearer.o config.o \
            core.o handler.o link.o discover.o msg.o  \
            name_distr.o  subscr.o name_table.o net.o  \
            netlink.o node.o node_subscr.o port.o ref.o  \
-           socket.o log.o eth_media.o
+           socket.o log.o eth_media.o server.o
 
 tipc-$(CONFIG_TIPC_MEDIA_IB)    += ib_media.o
+tipc-$(CONFIG_SYSCTL)           += sysctl.o
diff --git a/net/tipc/bcast.c b/net/tipc/bcast.c
index e5f3da507823..716de1ac6cb5 100644
--- a/net/tipc/bcast.c
+++ b/net/tipc/bcast.c
@@ -578,8 +578,7 @@ u32 tipc_bclink_acks_missing(struct tipc_node *n_ptr)
  * 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,
-                              struct tipc_bearer *unused1,
+static int tipc_bcbearer_send(struct sk_buff *buf, struct tipc_bearer *unused1,
                               struct tipc_media_addr *unused2)
 {
         int bp_index;
diff --git a/net/tipc/bcast.h b/net/tipc/bcast.h
index a93306557e00..6ee587b469fd 100644
--- a/net/tipc/bcast.h
+++ b/net/tipc/bcast.h
@@ -75,7 +75,8 @@ void tipc_nmap_remove(struct tipc_node_map *nm_ptr, u32 node);
 /**
  * tipc_nmap_equal - test for equality of node maps
  */
-static inline int tipc_nmap_equal(struct tipc_node_map *nm_a, struct tipc_node_map *nm_b)
+static inline int tipc_nmap_equal(struct tipc_node_map *nm_a,
+                                  struct tipc_node_map *nm_b)
 {
         return !memcmp(nm_a, nm_b, sizeof(*nm_a));
 }
diff --git a/net/tipc/config.c b/net/tipc/config.c
index f67866c765dd..c301a9a592d8 100644
--- a/net/tipc/config.c
+++ b/net/tipc/config.c
@@ -2,7 +2,7 @@
  * net/tipc/config.c: TIPC configuration management code
  *
  * Copyright (c) 2002-2006, Ericsson AB
- * Copyright (c) 2004-2007, 2010-2012, Wind River Systems
+ * Copyright (c) 2004-2007, 2010-2013, Wind River Systems
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
@@ -38,12 +38,12 @@
 #include "port.h"
 #include "name_table.h"
 #include "config.h"
+#include "server.h"
 
 #define REPLY_TRUNCATED "<truncated>\n"
 
-static u32 config_port_ref;
-
-static DEFINE_SPINLOCK(config_lock);
+static DEFINE_MUTEX(config_mutex);
+static struct tipc_server cfgsrv;
 
 static const void *req_tlv_area;        /* request message TLV area */
 static int req_tlv_space;               /* request message TLV area size */
@@ -181,18 +181,7 @@ static struct sk_buff *cfg_set_own_addr(void)
         if (tipc_own_addr)
                 return tipc_cfg_reply_error_string(TIPC_CFG_NOT_SUPPORTED
                                                    " (cannot change node address once assigned)");
-
-        /*
-         * Must temporarily release configuration spinlock while switching into
-         * networking mode as it calls tipc_eth_media_start(), which may sleep.
-         * Releasing the lock is harmless as other locally-issued configuration
-         * commands won't occur until this one completes, and remotely-issued
-         * configuration commands can't be received until a local configuration
-         * command to enable the first bearer is received and processed.
-         */
-        spin_unlock_bh(&config_lock);
         tipc_core_start_net(addr);
-        spin_lock_bh(&config_lock);
         return tipc_cfg_reply_none();
 }
 
@@ -248,7 +237,7 @@ struct sk_buff *tipc_cfg_do_cmd(u32 orig_node, u16 cmd, const void *request_area
 {
         struct sk_buff *rep_tlv_buf;
 
-        spin_lock_bh(&config_lock);
+        mutex_lock(&config_mutex);
 
         /* Save request and reply details in a well-known location */
         req_tlv_area = request_area;
@@ -377,37 +366,31 @@ struct sk_buff *tipc_cfg_do_cmd(u32 orig_node, u16 cmd, const void *request_area
 
         /* Return reply buffer */
 exit:
-        spin_unlock_bh(&config_lock);
+        mutex_unlock(&config_mutex);
         return rep_tlv_buf;
 }
 
-static void cfg_named_msg_event(void *userdata,
-                                u32 port_ref,
-                                struct sk_buff **buf,
-                                const unchar *msg,
-                                u32 size,
-                                u32 importance,
-                                struct tipc_portid const *orig,
-                                struct tipc_name_seq const *dest)
+static void cfg_conn_msg_event(int conid, struct sockaddr_tipc *addr,
+                               void *usr_data, void *buf, size_t len)
 {
         struct tipc_cfg_msg_hdr *req_hdr;
         struct tipc_cfg_msg_hdr *rep_hdr;
         struct sk_buff *rep_buf;
+        int ret;
 
         /* Validate configuration message header (ignore invalid message) */
-        req_hdr = (struct tipc_cfg_msg_hdr *)msg;
-        if ((size < sizeof(*req_hdr)) ||
-            (size != TCM_ALIGN(ntohl(req_hdr->tcm_len))) ||
+        req_hdr = (struct tipc_cfg_msg_hdr *)buf;
+        if ((len < sizeof(*req_hdr)) ||
+            (len != TCM_ALIGN(ntohl(req_hdr->tcm_len))) ||
             (ntohs(req_hdr->tcm_flags) != TCM_F_REQUEST)) {
                 pr_warn("Invalid configuration message discarded\n");
                 return;
         }
 
         /* Generate reply for request (if can't, return request) */
-        rep_buf = tipc_cfg_do_cmd(orig->node,
-                                  ntohs(req_hdr->tcm_type),
-                                  msg + sizeof(*req_hdr),
-                                  size - sizeof(*req_hdr),
+        rep_buf = tipc_cfg_do_cmd(addr->addr.id.node, ntohs(req_hdr->tcm_type),
+                                  buf + sizeof(*req_hdr),
+                                  len - sizeof(*req_hdr),
                                   BUF_HEADROOM + MAX_H_SIZE + sizeof(*rep_hdr));
         if (rep_buf) {
                 skb_push(rep_buf, sizeof(*rep_hdr));
@@ -415,57 +398,51 @@ static void cfg_named_msg_event(void *userdata,
                 memcpy(rep_hdr, req_hdr, sizeof(*rep_hdr));
                 rep_hdr->tcm_len = htonl(rep_buf->len);
                 rep_hdr->tcm_flags &= htons(~TCM_F_REQUEST);
-        } else {
-                rep_buf = *buf;
-                *buf = NULL;
-        }
 
-        /* NEED TO ADD CODE TO HANDLE FAILED SEND (SUCH AS CONGESTION) */
-        tipc_send_buf2port(port_ref, orig, rep_buf, rep_buf->len);
+                ret = tipc_conn_sendmsg(&cfgsrv, conid, addr, rep_buf->data,
+                                        rep_buf->len);
+                if (ret < 0)
+                        pr_err("Sending cfg reply message failed, no memory\n");
+
+                kfree_skb(rep_buf);
+        }
 }
 
+static struct sockaddr_tipc cfgsrv_addr __read_mostly = {
+        .family                 = AF_TIPC,
+        .addrtype               = TIPC_ADDR_NAMESEQ,
+        .addr.nameseq.type      = TIPC_CFG_SRV,
+        .addr.nameseq.lower     = 0,
+        .addr.nameseq.upper     = 0,
+        .scope                  = TIPC_ZONE_SCOPE
+};
+
+static struct tipc_server cfgsrv __read_mostly = {
+        .saddr                  = &cfgsrv_addr,
+        .imp                    = TIPC_CRITICAL_IMPORTANCE,
+        .type                   = SOCK_RDM,
+        .max_rcvbuf_size        = 64 * 1024,
+        .name                   = "cfg_server",
+        .tipc_conn_recvmsg      = cfg_conn_msg_event,
+        .tipc_conn_new          = NULL,
+        .tipc_conn_shutdown     = NULL
+};
+
 int tipc_cfg_init(void)
 {
-        struct tipc_name_seq seq;
-        int res;
-
-        res = tipc_createport(NULL, TIPC_CRITICAL_IMPORTANCE,
-                              NULL, NULL, NULL,
-                              NULL, cfg_named_msg_event, NULL,
-                              NULL, &config_port_ref);
-        if (res)
-                goto failed;
-
-        seq.type = TIPC_CFG_SRV;
-        seq.lower = seq.upper = tipc_own_addr;
-        res = tipc_publish(config_port_ref, TIPC_ZONE_SCOPE, &seq);
-        if (res)
-                goto failed;
-
-        return 0;
-
-failed:
-        pr_err("Unable to create configuration service\n");
-        return res;
+        return tipc_server_start(&cfgsrv);
 }
 
 void tipc_cfg_reinit(void)
 {
-        struct tipc_name_seq seq;
-        int res;
-
-        seq.type = TIPC_CFG_SRV;
-        seq.lower = seq.upper = 0;
-        tipc_withdraw(config_port_ref, TIPC_ZONE_SCOPE, &seq);
+        tipc_server_stop(&cfgsrv);
 
-        seq.lower = seq.upper = tipc_own_addr;
-        res = tipc_publish(config_port_ref, TIPC_ZONE_SCOPE, &seq);
-        if (res)
-                pr_err("Unable to reinitialize configuration service\n");
+        cfgsrv_addr.addr.nameseq.lower = tipc_own_addr;
+        cfgsrv_addr.addr.nameseq.upper = tipc_own_addr;
+        tipc_server_start(&cfgsrv);
 }
 
 void tipc_cfg_stop(void)
 {
-        tipc_deleteport(config_port_ref);
-        config_port_ref = 0;
+        tipc_server_stop(&cfgsrv);
 }
diff --git a/net/tipc/core.c b/net/tipc/core.c
index 7ec2c1eb94f1..fd4eeeaa972a 100644
--- a/net/tipc/core.c
+++ b/net/tipc/core.c
@@ -2,7 +2,7 @@
  * net/tipc/core.c: TIPC module code
  *
  * Copyright (c) 2003-2006, Ericsson AB
- * Copyright (c) 2005-2006, 2010-2011, Wind River Systems
+ * Copyright (c) 2005-2006, 2010-2013, Wind River Systems
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
@@ -39,6 +39,7 @@
 #include "name_table.h"
 #include "subscr.h"
 #include "config.h"
+#include "port.h"
 
 #include <linux/module.h>
 
@@ -50,7 +51,7 @@ u32 tipc_own_addr __read_mostly;
 int tipc_max_ports __read_mostly;
 int tipc_net_id __read_mostly;
 int tipc_remote_management __read_mostly;
-
+int sysctl_tipc_rmem[3] __read_mostly;  /* min/default/max */
 
 /**
  * tipc_buf_acquire - creates a TIPC message buffer
@@ -118,6 +119,7 @@ static void tipc_core_stop(void)
         tipc_nametbl_stop();
         tipc_ref_table_stop();
         tipc_socket_stop();
+        tipc_unregister_sysctl();
 }
 
 /**
@@ -135,20 +137,21 @@ static int tipc_core_start(void)
         if (!res)
                 res = tipc_nametbl_init();
         if (!res)
-                res = tipc_subscr_start();
-        if (!res)
-                res = tipc_cfg_init();
-        if (!res)
                 res = tipc_netlink_start();
         if (!res)
                 res = tipc_socket_init();
+        if (!res)
+                res = tipc_register_sysctl();
+        if (!res)
+                res = tipc_subscr_start();
+        if (!res)
+                res = tipc_cfg_init();
         if (res)
                 tipc_core_stop();
 
         return res;
 }
 
-
 static int __init tipc_init(void)
 {
         int res;
@@ -160,6 +163,11 @@ static int __init tipc_init(void)
         tipc_max_ports = CONFIG_TIPC_PORTS;
         tipc_net_id = 4711;
 
+        sysctl_tipc_rmem[0] = CONN_OVERLOAD_LIMIT >> 4 << TIPC_LOW_IMPORTANCE;
+        sysctl_tipc_rmem[1] = CONN_OVERLOAD_LIMIT >> 4 <<
+                              TIPC_CRITICAL_IMPORTANCE;
+        sysctl_tipc_rmem[2] = CONN_OVERLOAD_LIMIT;
+
         res = tipc_core_start();
         if (res)
                 pr_err("Unable to start in single node mode\n");
diff --git a/net/tipc/core.h b/net/tipc/core.h
index 0207db04179a..be72f8cebc53 100644
--- a/net/tipc/core.h
+++ b/net/tipc/core.h
@@ -1,8 +1,8 @@
 /*
  * net/tipc/core.h: Include file for TIPC global declarations
  *
- * Copyright (c) 2005-2006, Ericsson AB
- * Copyright (c) 2005-2007, 2010-2011, Wind River Systems
+ * Copyright (c) 2005-2006, 2013 Ericsson AB
+ * Copyright (c) 2005-2007, 2010-2013, Wind River Systems
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
@@ -80,6 +80,7 @@ extern u32 tipc_own_addr __read_mostly;
 extern int tipc_max_ports __read_mostly;
 extern int tipc_net_id __read_mostly;
 extern int tipc_remote_management __read_mostly;
+extern int sysctl_tipc_rmem[3] __read_mostly;
 
 /*
  * Other global variables
@@ -96,6 +97,18 @@ extern int  tipc_netlink_start(void);
 extern void tipc_netlink_stop(void);
 extern int  tipc_socket_init(void);
 extern void tipc_socket_stop(void);
+extern int tipc_sock_create_local(int type, struct socket **res);
+extern void tipc_sock_release_local(struct socket *sock);
+extern int tipc_sock_accept_local(struct socket *sock,
+                                  struct socket **newsock, int flags);
+
+#ifdef CONFIG_SYSCTL
+extern int tipc_register_sysctl(void);
+extern void tipc_unregister_sysctl(void);
+#else
+#define tipc_register_sysctl() 0
+#define tipc_unregister_sysctl()
+#endif
 
 /*
  * TIPC timer and signal code
diff --git a/net/tipc/discover.c b/net/tipc/discover.c
index eedff58d0387..ecc758c6eacf 100644
--- a/net/tipc/discover.c
+++ b/net/tipc/discover.c
@@ -70,8 +70,7 @@ struct tipc_link_req {
  * @dest_domain: network domain of node(s) which should respond to message
  * @b_ptr: ptr to bearer issuing message
  */
-static struct sk_buff *tipc_disc_init_msg(u32 type,
-                                          u32 dest_domain,
+static struct sk_buff *tipc_disc_init_msg(u32 type, u32 dest_domain,
                                           struct tipc_bearer *b_ptr)
 {
         struct sk_buff *buf = tipc_buf_acquire(INT_H_SIZE);
@@ -346,8 +345,8 @@ exit:
  *
  * Returns 0 if successful, otherwise -errno.
  */
-int tipc_disc_create(struct tipc_bearer *b_ptr,
-                     struct tipc_media_addr *dest, u32 dest_domain)
+int tipc_disc_create(struct tipc_bearer *b_ptr, struct tipc_media_addr *dest,
+                     u32 dest_domain)
 {
         struct tipc_link_req *req;
 
diff --git a/net/tipc/eth_media.c b/net/tipc/eth_media.c
index 120a676a3360..40ea40cf6204 100644
--- a/net/tipc/eth_media.c
+++ b/net/tipc/eth_media.c
@@ -62,7 +62,7 @@ static struct eth_bearer eth_bearers[MAX_ETH_BEARERS];
 static int eth_started;
 
 static int recv_notification(struct notifier_block *nb, unsigned long evt,
-                              void *dv);
+                             void *dv);
 /*
  * Network device notifier info
  */
@@ -162,8 +162,7 @@ static void setup_bearer(struct work_struct *work)
  */
 static int enable_bearer(struct tipc_bearer *tb_ptr)
 {
-        struct net_device *dev = NULL;
-        struct net_device *pdev = NULL;
+        struct net_device *dev;
         struct eth_bearer *eb_ptr = &eth_bearers[0];
         struct eth_bearer *stop = &eth_bearers[MAX_ETH_BEARERS];
         char *driver_name = strchr((const char *)tb_ptr->name, ':') + 1;
@@ -178,15 +177,7 @@ 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);
+        dev = dev_get_by_name(&init_net, driver_name);
         if (!dev)
                 return -ENODEV;
 
@@ -251,9 +242,9 @@ static void disable_bearer(struct tipc_bearer *tb_ptr)
  * specified device.
  */
 static int recv_notification(struct notifier_block *nb, unsigned long evt,
-                             void *dv)
+                             void *ptr)
 {
-        struct net_device *dev = (struct net_device *)dv;
+        struct net_device *dev = netdev_notifier_info_to_dev(ptr);
         struct eth_bearer *eb_ptr = &eth_bearers[0];
         struct eth_bearer *stop = &eth_bearers[MAX_ETH_BEARERS];
 
diff --git a/net/tipc/ib_media.c b/net/tipc/ib_media.c
index 2a2864c25e15..ad2e1ec4117e 100644
--- a/net/tipc/ib_media.c
+++ b/net/tipc/ib_media.c
@@ -155,8 +155,7 @@ static void setup_bearer(struct work_struct *work)
  */
 static int enable_bearer(struct tipc_bearer *tb_ptr)
 {
-        struct net_device *dev = NULL;
-        struct net_device *pdev = NULL;
+        struct net_device *dev;
         struct ib_bearer *ib_ptr = &ib_bearers[0];
         struct ib_bearer *stop = &ib_bearers[MAX_IB_BEARERS];
         char *driver_name = strchr((const char *)tb_ptr->name, ':') + 1;
@@ -171,15 +170,7 @@ 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);
+        dev = dev_get_by_name(&init_net, driver_name);
         if (!dev)
                 return -ENODEV;
 
@@ -244,9 +235,9 @@ static void disable_bearer(struct tipc_bearer *tb_ptr)
  * specified device.
  */
 static int recv_notification(struct notifier_block *nb, unsigned long evt,
-                             void *dv)
+                             void *ptr)
 {
-        struct net_device *dev = (struct net_device *)dv;
+        struct net_device *dev = netdev_notifier_info_to_dev(ptr);
         struct ib_bearer *ib_ptr = &ib_bearers[0];
         struct ib_bearer *stop = &ib_bearers[MAX_IB_BEARERS];
 
diff --git a/net/tipc/link.c b/net/tipc/link.c
index a80feee5197a..0cc3d9015c5d 100644
--- a/net/tipc/link.c
+++ b/net/tipc/link.c
@@ -2,7 +2,7 @@
  * net/tipc/link.c: TIPC link code
  *
  * Copyright (c) 1996-2007, 2012, Ericsson AB
- * Copyright (c) 2004-2007, 2010-2011, Wind River Systems
+ * Copyright (c) 2004-2007, 2010-2013, Wind River Systems
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
@@ -41,6 +41,8 @@
 #include "discover.h"
 #include "config.h"
 
+#include <linux/pkt_sched.h>
+
 /*
  * Error message prefixes
  */
@@ -771,8 +773,7 @@ static void link_state_event(struct tipc_link *l_ptr, unsigned int event)
  * link_bundle_buf(): Append contents of a buffer to
  * the tail of an existing one.
  */
-static int link_bundle_buf(struct tipc_link *l_ptr,
-                           struct sk_buff *bundler,
+static int link_bundle_buf(struct tipc_link *l_ptr, struct sk_buff *bundler,
                            struct sk_buff *buf)
 {
         struct tipc_msg *bundler_msg = buf_msg(bundler);
@@ -1057,40 +1058,6 @@ static int link_send_buf_fast(struct tipc_link *l_ptr, struct sk_buff *buf,
 }
 
 /*
- * tipc_send_buf_fast: Entry for data messages where the
- * destination node is known and the header is complete,
- * inclusive total message length.
- * Returns user data length.
- */
-int tipc_send_buf_fast(struct sk_buff *buf, u32 destnode)
-{
-        struct tipc_link *l_ptr;
-        struct tipc_node *n_ptr;
-        int res;
-        u32 selector = msg_origport(buf_msg(buf)) & 1;
-        u32 dummy;
-
-        read_lock_bh(&tipc_net_lock);
-        n_ptr = tipc_node_find(destnode);
-        if (likely(n_ptr)) {
-                tipc_node_lock(n_ptr);
-                l_ptr = n_ptr->active_links[selector];
-                if (likely(l_ptr)) {
-                        res = link_send_buf_fast(l_ptr, buf, &dummy);
-                        tipc_node_unlock(n_ptr);
-                        read_unlock_bh(&tipc_net_lock);
-                        return res;
-                }
-                tipc_node_unlock(n_ptr);
-        }
-        read_unlock_bh(&tipc_net_lock);
-        res = msg_data_sz(buf_msg(buf));
-        tipc_reject_msg(buf, TIPC_ERR_NO_NODE);
-        return res;
-}
-
-
-/*
  * tipc_link_send_sections_fast: Entry for messages where the
  * destination processor is known and the header is complete,
  * except for total message length.
@@ -1098,8 +1065,7 @@ int tipc_send_buf_fast(struct sk_buff *buf, u32 destnode)
  */
 int tipc_link_send_sections_fast(struct tipc_port *sender,
                                  struct iovec const *msg_sect,
-                                 const u32 num_sect,
-                                 unsigned int total_len,
+                                 const u32 num_sect, unsigned int total_len,
                                  u32 destaddr)
 {
         struct tipc_msg *hdr = &sender->phdr;
@@ -1115,7 +1081,10 @@ again:
          * (Must not hold any locks while building message.)
          */
         res = tipc_msg_build(hdr, msg_sect, num_sect, total_len,
-                             sender->max_pkt, !sender->user_port, &buf);
+                             sender->max_pkt, &buf);
+        /* Exit if build request was invalid */
+        if (unlikely(res < 0))
+                return res;
 
         read_lock_bh(&tipc_net_lock);
         node = tipc_node_find(destaddr);
@@ -1132,10 +1101,6 @@ exit:
                                 return res;
                         }
 
-                        /* Exit if build request was invalid */
-                        if (unlikely(res < 0))
-                                goto exit;
-
                         /* Exit if link (or bearer) is congested */
                         if (link_congested(l_ptr) ||
                             tipc_bearer_blocked(l_ptr->b_ptr)) {
@@ -1189,8 +1154,7 @@ exit:
  */
 static int link_send_sections_long(struct tipc_port *sender,
                                    struct iovec const *msg_sect,
-                                   u32 num_sect,
-                                   unsigned int total_len,
+                                   u32 num_sect, unsigned int total_len,
                                    u32 destaddr)
 {
         struct tipc_link *l_ptr;
@@ -1204,6 +1168,7 @@ static int link_send_sections_long(struct tipc_port *sender,
         const unchar *sect_crs;
         int curr_sect;
         u32 fragm_no;
+        int res = 0;
 
 again:
         fragm_no = 1;
@@ -1250,18 +1215,15 @@ again:
                 else
                         sz = fragm_rest;
 
-                if (likely(!sender->user_port)) {
-                        if (copy_from_user(buf->data + fragm_crs, sect_crs, sz)) {
+                if (copy_from_user(buf->data + fragm_crs, sect_crs, sz)) {
+                        res = -EFAULT;
 error:
-                                for (; buf_chain; buf_chain = buf) {
-                                        buf = buf_chain->next;
-                                        kfree_skb(buf_chain);
-                                }
-                                return -EFAULT;
+                        for (; buf_chain; buf_chain = buf) {
+                                buf = buf_chain->next;
+                                kfree_skb(buf_chain);
                         }
-                } else
-                        skb_copy_to_linear_data_offset(buf, fragm_crs,
-                                                       sect_crs, sz);
+                        return res;
+                }
                 sect_crs += sz;
                 sect_rest -= sz;
                 fragm_crs += sz;
@@ -1281,8 +1243,10 @@ error:
                         msg_set_fragm_no(&fragm_hdr, ++fragm_no);
                         prev = buf;
                         buf = tipc_buf_acquire(fragm_sz + INT_H_SIZE);
-                        if (!buf)
+                        if (!buf) {
+                                res = -ENOMEM;
                                 goto error;
+                        }
 
                         buf->next = NULL;
                         prev->next = buf;
@@ -1446,7 +1410,7 @@ static void link_reset_all(unsigned long addr)
 }
 
 static void link_retransmit_failure(struct tipc_link *l_ptr,
-                                        struct sk_buff *buf)
+                                    struct sk_buff *buf)
 {
         struct tipc_msg *msg = buf_msg(buf);
 
@@ -1901,8 +1865,8 @@ static void link_handle_out_of_seq_msg(struct tipc_link *l_ptr,
  * Send protocol message to the other endpoint.
  */
 void tipc_link_send_proto_msg(struct tipc_link *l_ptr, u32 msg_typ,
-                                int probe_msg, u32 gap, u32 tolerance,
-                                u32 priority, u32 ack_mtu)
+                              int probe_msg, u32 gap, u32 tolerance,
+                              u32 priority, u32 ack_mtu)
 {
         struct sk_buff *buf = NULL;
         struct tipc_msg *msg = l_ptr->pmsg;
@@ -1988,6 +1952,7 @@ void tipc_link_send_proto_msg(struct tipc_link *l_ptr, u32 msg_typ,
                 return;
 
         skb_copy_to_linear_data(buf, msg, sizeof(l_ptr->proto_msg));
+        buf->priority = TC_PRIO_CONTROL;
 
         /* Defer message if bearer is already blocked */
         if (tipc_bearer_blocked(l_ptr->b_ptr)) {
@@ -2145,8 +2110,7 @@ exit:
  * another bearer. Owner node is locked.
  */
 static void tipc_link_tunnel(struct tipc_link *l_ptr,
-                             struct tipc_msg *tunnel_hdr,
-                             struct tipc_msg  *msg,
+                             struct tipc_msg *tunnel_hdr, struct tipc_msg *msg,
                              u32 selector)
 {
         struct tipc_link *tunnel;
diff --git a/net/tipc/msg.c b/net/tipc/msg.c
index f2db8a87d9c5..ced60e2fc4f7 100644
--- a/net/tipc/msg.c
+++ b/net/tipc/msg.c
@@ -51,8 +51,8 @@ u32 tipc_msg_tot_importance(struct tipc_msg *m)
 }
 
 
-void tipc_msg_init(struct tipc_msg *m, u32 user, u32 type,
-                            u32 hsize, u32 destnode)
+void tipc_msg_init(struct tipc_msg *m, u32 user, u32 type, u32 hsize,
+                   u32 destnode)
 {
         memset(m, 0, hsize);
         msg_set_version(m);
@@ -73,8 +73,8 @@ void tipc_msg_init(struct tipc_msg *m, u32 user, u32 type,
  * Returns message data size or errno
  */
 int tipc_msg_build(struct tipc_msg *hdr, struct iovec const *msg_sect,
-                   u32 num_sect, unsigned int total_len,
-                            int max_size, int usrmem, struct sk_buff **buf)
+                   u32 num_sect, unsigned int total_len, int max_size,
+                   struct sk_buff **buf)
 {
         int dsz, sz, hsz, pos, res, cnt;
 
@@ -92,14 +92,9 @@ int tipc_msg_build(struct tipc_msg *hdr, struct iovec const *msg_sect,
                 return -ENOMEM;
         skb_copy_to_linear_data(*buf, hdr, hsz);
         for (res = 1, cnt = 0; res && (cnt < num_sect); cnt++) {
-                if (likely(usrmem))
-                        res = !copy_from_user((*buf)->data + pos,
-                                              msg_sect[cnt].iov_base,
-                                              msg_sect[cnt].iov_len);
-                else
-                        skb_copy_to_linear_data_offset(*buf, pos,
-                                                       msg_sect[cnt].iov_base,
-                                                       msg_sect[cnt].iov_len);
+                skb_copy_to_linear_data_offset(*buf, pos,
+                                               msg_sect[cnt].iov_base,
+                                               msg_sect[cnt].iov_len);
                 pos += msg_sect[cnt].iov_len;
         }
         if (likely(res))
diff --git a/net/tipc/msg.h b/net/tipc/msg.h
index ba2a72beea68..5e4ccf5c27df 100644
--- a/net/tipc/msg.h
+++ b/net/tipc/msg.h
@@ -719,9 +719,9 @@ static inline void msg_set_link_tolerance(struct tipc_msg *m, u32 n)
 }
 
 u32 tipc_msg_tot_importance(struct tipc_msg *m);
-void tipc_msg_init(struct tipc_msg *m, u32 user, u32 type,
-                            u32 hsize, u32 destnode);
+void tipc_msg_init(struct tipc_msg *m, u32 user, u32 type, u32 hsize,
+                   u32 destnode);
 int tipc_msg_build(struct tipc_msg *hdr, struct iovec const *msg_sect,
-                   u32 num_sect, unsigned int total_len,
-                            int max_size, int usrmem, struct sk_buff **buf);
+                   u32 num_sect, unsigned int total_len, int max_size,
+                   struct sk_buff **buf);
 #endif
diff --git a/net/tipc/name_table.c b/net/tipc/name_table.c
index 24b167914311..09dcd54b04e1 100644
--- a/net/tipc/name_table.c
+++ b/net/tipc/name_table.c
@@ -440,7 +440,7 @@ found:
  * sequence overlapping with the requested sequence
  */
 static void tipc_nameseq_subscribe(struct name_seq *nseq,
-                                        struct tipc_subscription *s)
+                                   struct tipc_subscription *s)
 {
         struct sub_seq *sseq = nseq->sseqs;
 
@@ -662,7 +662,7 @@ exit:
  * tipc_nametbl_publish - add name publication to network name tables
  */
 struct publication *tipc_nametbl_publish(u32 type, u32 lower, u32 upper,
-                                    u32 scope, u32 port_ref, u32 key)
+                                         u32 scope, u32 port_ref, u32 key)
 {
         struct publication *publ;
 
@@ -753,7 +753,7 @@ void tipc_nametbl_unsubscribe(struct tipc_subscription *s)
  * subseq_list - print specified sub-sequence contents into the given buffer
  */
 static int subseq_list(struct sub_seq *sseq, char *buf, int len, u32 depth,
-                        u32 index)
+                       u32 index)
 {
         char portIdStr[27];
         const char *scope_str[] = {"", " zone", " cluster", " node"};
@@ -792,7 +792,7 @@ static int subseq_list(struct sub_seq *sseq, char *buf, int len, u32 depth,
  * nameseq_list - print specified name sequence contents into the given buffer
  */
 static int nameseq_list(struct name_seq *seq, char *buf, int len, u32 depth,
-                         u32 type, u32 lowbound, u32 upbound, u32 index)
+                        u32 type, u32 lowbound, u32 upbound, u32 index)
 {
         struct sub_seq *sseq;
         char typearea[11];
@@ -849,7 +849,7 @@ static int nametbl_header(char *buf, int len, u32 depth)
  * nametbl_list - print specified name table contents into the given buffer
  */
 static int nametbl_list(char *buf, int len, u32 depth_info,
-                         u32 type, u32 lowbound, u32 upbound)
+                        u32 type, u32 lowbound, u32 upbound)
 {
         struct hlist_head *seq_head;
         struct name_seq *seq;
diff --git a/net/tipc/name_table.h b/net/tipc/name_table.h
index 71cb4dc712df..f02f48b9a216 100644
--- a/net/tipc/name_table.h
+++ b/net/tipc/name_table.h
@@ -87,14 +87,15 @@ extern rwlock_t tipc_nametbl_lock;
 struct sk_buff *tipc_nametbl_get(const void *req_tlv_area, int req_tlv_space);
 u32 tipc_nametbl_translate(u32 type, u32 instance, u32 *node);
 int tipc_nametbl_mc_translate(u32 type, u32 lower, u32 upper, u32 limit,
-                         struct tipc_port_list *dports);
+                              struct tipc_port_list *dports);
 struct publication *tipc_nametbl_publish(u32 type, u32 lower, u32 upper,
-                                    u32 scope, u32 port_ref, u32 key);
+                                         u32 scope, u32 port_ref, u32 key);
 int tipc_nametbl_withdraw(u32 type, u32 lower, u32 ref, u32 key);
 struct publication *tipc_nametbl_insert_publ(u32 type, u32 lower, u32 upper,
-                                        u32 scope, u32 node, u32 ref, u32 key);
-struct publication *tipc_nametbl_remove_publ(u32 type, u32 lower,
-                                        u32 node, u32 ref, u32 key);
+                                             u32 scope, u32 node, u32 ref,
+                                             u32 key);
+struct publication *tipc_nametbl_remove_publ(u32 type, u32 lower, u32 node,
+                                             u32 ref, u32 key);
 void tipc_nametbl_subscribe(struct tipc_subscription *s);
 void tipc_nametbl_unsubscribe(struct tipc_subscription *s);
 int tipc_nametbl_init(void);
diff --git a/net/tipc/node_subscr.c b/net/tipc/node_subscr.c
index 5e34b015da45..8a7384c04add 100644
--- a/net/tipc/node_subscr.c
+++ b/net/tipc/node_subscr.c
@@ -42,7 +42,7 @@
  * tipc_nodesub_subscribe - create "node down" subscription for specified node
  */
 void tipc_nodesub_subscribe(struct tipc_node_subscr *node_sub, u32 addr,
-                       void *usr_handle, net_ev_handler handle_down)
+                            void *usr_handle, net_ev_handler handle_down)
 {
         if (in_own_node(addr)) {
                 node_sub->node = NULL;
diff --git a/net/tipc/port.c b/net/tipc/port.c
index 18098cac62f2..b3ed2fcab4fb 100644
--- a/net/tipc/port.c
+++ b/net/tipc/port.c
@@ -2,7 +2,7 @@
  * net/tipc/port.c: TIPC port code
  *
  * Copyright (c) 1992-2007, Ericsson AB
- * Copyright (c) 2004-2008, 2010-2011, Wind River Systems
+ * Copyright (c) 2004-2008, 2010-2013, Wind River Systems
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
@@ -46,11 +46,7 @@
 
 #define MAX_REJECT_SIZE 1024
 
-static struct sk_buff *msg_queue_head;
-static struct sk_buff *msg_queue_tail;
-
 DEFINE_SPINLOCK(tipc_port_list_lock);
-static DEFINE_SPINLOCK(queue_lock);
 
 static LIST_HEAD(ports);
 static void port_handle_node_down(unsigned long ref);
@@ -119,7 +115,7 @@ int tipc_multicast(u32 ref, struct tipc_name_seq const *seq,
         msg_set_nameupper(hdr, seq->upper);
         msg_set_hdr_sz(hdr, MCAST_H_SIZE);
         res = tipc_msg_build(hdr, msg_sect, num_sect, total_len, MAX_MSG_SIZE,
-                        !oport->user_port, &buf);
+                             &buf);
         if (unlikely(!buf))
                 return res;
 
@@ -206,14 +202,15 @@ exit:
 }
 
 /**
- * tipc_createport_raw - create a generic TIPC port
+ * tipc_createport - create a generic TIPC port
  *
  * Returns pointer to (locked) TIPC port, or NULL if unable to create it
  */
-struct tipc_port *tipc_createport_raw(void *usr_handle,
-                        u32 (*dispatcher)(struct tipc_port *, struct sk_buff *),
-                        void (*wakeup)(struct tipc_port *),
-                        const u32 importance)
+struct tipc_port *tipc_createport(struct sock *sk,
+                                  u32 (*dispatcher)(struct tipc_port *,
+                                  struct sk_buff *),
+                                  void (*wakeup)(struct tipc_port *),
+                                  const u32 importance)
 {
         struct tipc_port *p_ptr;
         struct tipc_msg *msg;
@@ -231,14 +228,13 @@ struct tipc_port *tipc_createport_raw(void *usr_handle,
                 return NULL;
         }
 
-        p_ptr->usr_handle = usr_handle;
+        p_ptr->sk = sk;
         p_ptr->max_pkt = MAX_PKT_DEFAULT;
         p_ptr->ref = ref;
         INIT_LIST_HEAD(&p_ptr->wait_list);
         INIT_LIST_HEAD(&p_ptr->subscription.nodesub_list);
         p_ptr->dispatcher = dispatcher;
         p_ptr->wakeup = wakeup;
-        p_ptr->user_port = NULL;
         k_init_timer(&p_ptr->timer, (Handler)port_timeout, ref);
         INIT_LIST_HEAD(&p_ptr->publications);
         INIT_LIST_HEAD(&p_ptr->port_list);
@@ -275,7 +271,6 @@ int tipc_deleteport(u32 ref)
                 buf = port_build_peer_abort_msg(p_ptr, TIPC_ERR_NO_PORT);
                 tipc_nodesub_unsubscribe(&p_ptr->subscription);
         }
-        kfree(p_ptr->user_port);
 
         spin_lock_bh(&tipc_port_list_lock);
         list_del(&p_ptr->port_list);
@@ -448,7 +443,7 @@ int tipc_port_reject_sections(struct tipc_port *p_ptr, struct tipc_msg *hdr,
         int res;
 
         res = tipc_msg_build(hdr, msg_sect, num_sect, total_len, MAX_MSG_SIZE,
-                        !p_ptr->user_port, &buf);
+                             &buf);
         if (!buf)
                 return res;
 
@@ -668,215 +663,6 @@ void tipc_port_reinit(void)
         spin_unlock_bh(&tipc_port_list_lock);
 }
 
-
-/*
- *  port_dispatcher_sigh(): Signal handler for messages destinated
- *                          to the tipc_port interface.
- */
-static void port_dispatcher_sigh(void *dummy)
-{
-        struct sk_buff *buf;
-
-        spin_lock_bh(&queue_lock);
-        buf = msg_queue_head;
-        msg_queue_head = NULL;
-        spin_unlock_bh(&queue_lock);
-
-        while (buf) {
-                struct tipc_port *p_ptr;
-                struct user_port *up_ptr;
-                struct tipc_portid orig;
-                struct tipc_name_seq dseq;
-                void *usr_handle;
-                int connected;
-                int peer_invalid;
-                int published;
-                u32 message_type;
-
-                struct sk_buff *next = buf->next;
-                struct tipc_msg *msg = buf_msg(buf);
-                u32 dref = msg_destport(msg);
-
-                message_type = msg_type(msg);
-                if (message_type > TIPC_DIRECT_MSG)
-                        goto reject;    /* Unsupported message type */
-
-                p_ptr = tipc_port_lock(dref);
-                if (!p_ptr)
-                        goto reject;    /* Port deleted while msg in queue */
-
-                orig.ref = msg_origport(msg);
-                orig.node = msg_orignode(msg);
-                up_ptr = p_ptr->user_port;
-                usr_handle = up_ptr->usr_handle;
-                connected = p_ptr->connected;
-                peer_invalid = connected && !tipc_port_peer_msg(p_ptr, msg);
-                published = p_ptr->published;
-
-                if (unlikely(msg_errcode(msg)))
-                        goto err;
-
-                switch (message_type) {
-
-                case TIPC_CONN_MSG:{
-                                tipc_conn_msg_event cb = up_ptr->conn_msg_cb;
-                                u32 dsz;
-
-                                tipc_port_unlock(p_ptr);
-                                if (unlikely(!cb))
-                                        goto reject;
-                                if (unlikely(!connected)) {
-                                        if (tipc_connect(dref, &orig))
-                                                goto reject;
-                                } else if (peer_invalid)
-                                        goto reject;
-                                dsz = msg_data_sz(msg);
-                                if (unlikely(dsz &&
-                                             (++p_ptr->conn_unacked >=
-                                              TIPC_FLOW_CONTROL_WIN)))
-                                        tipc_acknowledge(dref,
-                                                         p_ptr->conn_unacked);
-                                skb_pull(buf, msg_hdr_sz(msg));
-                                cb(usr_handle, dref, &buf, msg_data(msg), dsz);
-                                break;
-                        }
-                case TIPC_DIRECT_MSG:{
-                                tipc_msg_event cb = up_ptr->msg_cb;
-
-                                tipc_port_unlock(p_ptr);
-                                if (unlikely(!cb || connected))
-                                        goto reject;
-                                skb_pull(buf, msg_hdr_sz(msg));
-                                cb(usr_handle, dref, &buf, msg_data(msg),
-                                   msg_data_sz(msg), msg_importance(msg),
-                                   &orig);
-                                break;
-                        }
-                case TIPC_MCAST_MSG:
-                case TIPC_NAMED_MSG:{
-                                tipc_named_msg_event cb = up_ptr->named_msg_cb;
-
-                                tipc_port_unlock(p_ptr);
-                                if (unlikely(!cb || connected || !published))
-                                        goto reject;
-                                dseq.type =  msg_nametype(msg);
-                                dseq.lower = msg_nameinst(msg);
-                                dseq.upper = (message_type == TIPC_NAMED_MSG)
-                                        ? dseq.lower : msg_nameupper(msg);
-                                skb_pull(buf, msg_hdr_sz(msg));
-                                cb(usr_handle, dref, &buf, msg_data(msg),
-                                   msg_data_sz(msg), msg_importance(msg),
-                                   &orig, &dseq);
-                                break;
-                        }
-                }
-                if (buf)
-                        kfree_skb(buf);
-                buf = next;
-                continue;
-err:
-                switch (message_type) {
-
-                case TIPC_CONN_MSG:{
-                                tipc_conn_shutdown_event cb =
-                                        up_ptr->conn_err_cb;
-
-                                tipc_port_unlock(p_ptr);
-                                if (!cb || !connected || peer_invalid)
-                                        break;
-                                tipc_disconnect(dref);
-                                skb_pull(buf, msg_hdr_sz(msg));
-                                cb(usr_handle, dref, &buf, msg_data(msg),
-                                   msg_data_sz(msg), msg_errcode(msg));
-                                break;
-                        }
-                case TIPC_DIRECT_MSG:{
-                                tipc_msg_err_event cb = up_ptr->err_cb;
-
-                                tipc_port_unlock(p_ptr);
-                                if (!cb || connected)
-                                        break;
-                                skb_pull(buf, msg_hdr_sz(msg));
-                                cb(usr_handle, dref, &buf, msg_data(msg),
-                                   msg_data_sz(msg), msg_errcode(msg), &orig);
-                                break;
-                        }
-                case TIPC_MCAST_MSG:
-                case TIPC_NAMED_MSG:{
-                                tipc_named_msg_err_event cb =
-                                        up_ptr->named_err_cb;
-
-                                tipc_port_unlock(p_ptr);
-                                if (!cb || connected)
-                                        break;
-                                dseq.type =  msg_nametype(msg);
-                                dseq.lower = msg_nameinst(msg);
-                                dseq.upper = (message_type == TIPC_NAMED_MSG)
-                                        ? dseq.lower : msg_nameupper(msg);
-                                skb_pull(buf, msg_hdr_sz(msg));
-                                cb(usr_handle, dref, &buf, msg_data(msg),
-                                   msg_data_sz(msg), msg_errcode(msg), &dseq);
-                                break;
-                        }
-                }
-                if (buf)
-                        kfree_skb(buf);
-                buf = next;
-                continue;
-reject:
-                tipc_reject_msg(buf, TIPC_ERR_NO_PORT);
-                buf = next;
-        }
-}
-
-/*
- *  port_dispatcher(): Dispatcher for messages destinated
- *  to the tipc_port interface. Called with port locked.
- */
-static u32 port_dispatcher(struct tipc_port *dummy, struct sk_buff *buf)
-{
-        buf->next = NULL;
-        spin_lock_bh(&queue_lock);
-        if (msg_queue_head) {
-                msg_queue_tail->next = buf;
-                msg_queue_tail = buf;
-        } else {
-                msg_queue_tail = msg_queue_head = buf;
-                tipc_k_signal((Handler)port_dispatcher_sigh, 0);
-        }
-        spin_unlock_bh(&queue_lock);
-        return 0;
-}
-
-/*
- * Wake up port after congestion: Called with port locked
- */
-static void port_wakeup_sh(unsigned long ref)
-{
-        struct tipc_port *p_ptr;
-        struct user_port *up_ptr;
-        tipc_continue_event cb = NULL;
-        void *uh = NULL;
-
-        p_ptr = tipc_port_lock(ref);
-        if (p_ptr) {
-                up_ptr = p_ptr->user_port;
-                if (up_ptr) {
-                        cb = up_ptr->continue_event_cb;
-                        uh = up_ptr->usr_handle;
-                }
-                tipc_port_unlock(p_ptr);
-        }
-        if (cb)
-                cb(uh, ref);
-}
-
-
-static void port_wakeup(struct tipc_port *p_ptr)
-{
-        tipc_k_signal((Handler)port_wakeup_sh, p_ptr->ref);
-}
-
 void tipc_acknowledge(u32 ref, u32 ack)
 {
         struct tipc_port *p_ptr;
@@ -893,50 +679,6 @@ void tipc_acknowledge(u32 ref, u32 ack)
         tipc_net_route_msg(buf);
 }
 
-/*
- * tipc_createport(): user level call.
- */
-int tipc_createport(void *usr_handle,
-                    unsigned int importance,
-                    tipc_msg_err_event error_cb,
-                    tipc_named_msg_err_event named_error_cb,
-                    tipc_conn_shutdown_event conn_error_cb,
-                    tipc_msg_event msg_cb,
-                    tipc_named_msg_event named_msg_cb,
-                    tipc_conn_msg_event conn_msg_cb,
-                    tipc_continue_event continue_event_cb, /* May be zero */
-                    u32 *portref)
-{
-        struct user_port *up_ptr;
-        struct tipc_port *p_ptr;
-
-        up_ptr = kmalloc(sizeof(*up_ptr), GFP_ATOMIC);
-        if (!up_ptr) {
-                pr_warn("Port creation failed, no memory\n");
-                return -ENOMEM;
-        }
-        p_ptr = tipc_createport_raw(NULL, port_dispatcher, port_wakeup,
-                                    importance);
-        if (!p_ptr) {
-                kfree(up_ptr);
-                return -ENOMEM;
-        }
-
-        p_ptr->user_port = up_ptr;
-        up_ptr->usr_handle = usr_handle;
-        up_ptr->ref = p_ptr->ref;
-        up_ptr->err_cb = error_cb;
-        up_ptr->named_err_cb = named_error_cb;
-        up_ptr->conn_err_cb = conn_error_cb;
-        up_ptr->msg_cb = msg_cb;
-        up_ptr->named_msg_cb = named_msg_cb;
-        up_ptr->conn_msg_cb = conn_msg_cb;
-        up_ptr->continue_event_cb = continue_event_cb;
-        *portref = p_ptr->ref;
-        tipc_port_unlock(p_ptr);
-        return 0;
-}
-
 int tipc_portimportance(u32 ref, unsigned int *importance)
 {
         struct tipc_port *p_ptr;
@@ -1184,7 +926,7 @@ static int tipc_port_recv_sections(struct tipc_port *sender, unsigned int num_se
         int res;
 
         res = tipc_msg_build(&sender->phdr, msg_sect, num_sect, total_len,
-                        MAX_MSG_SIZE, !sender->user_port, &buf);
+                             MAX_MSG_SIZE, &buf);
         if (likely(buf))
                 tipc_port_recv_msg(buf);
         return res;
@@ -1322,43 +1064,3 @@ int tipc_send2port(u32 ref, struct tipc_portid const *dest,
         }
         return -ELINKCONG;
 }
-
-/**
- * tipc_send_buf2port - send message buffer to port identity
- */
-int tipc_send_buf2port(u32 ref, struct tipc_portid const *dest,
-               struct sk_buff *buf, unsigned int dsz)
-{
-        struct tipc_port *p_ptr;
-        struct tipc_msg *msg;
-        int res;
-
-        p_ptr = (struct tipc_port *)tipc_ref_deref(ref);
-        if (!p_ptr || p_ptr->connected)
-                return -EINVAL;
-
-        msg = &p_ptr->phdr;
-        msg_set_type(msg, TIPC_DIRECT_MSG);
-        msg_set_destnode(msg, dest->node);
-        msg_set_destport(msg, dest->ref);
-        msg_set_hdr_sz(msg, BASIC_H_SIZE);
-        msg_set_size(msg, BASIC_H_SIZE + dsz);
-        if (skb_cow(buf, BASIC_H_SIZE))
-                return -ENOMEM;
-
-        skb_push(buf, BASIC_H_SIZE);
-        skb_copy_to_linear_data(buf, msg, BASIC_H_SIZE);
-
-        if (in_own_node(dest->node))
-                res = tipc_port_recv_msg(buf);
-        else
-                res = tipc_send_buf_fast(buf, dest->node);
-        if (likely(res != -ELINKCONG)) {
-                if (res > 0)
-                        p_ptr->sent++;
-                return res;
-        }
-        if (port_unreliable(p_ptr))
-                return dsz;
-        return -ELINKCONG;
-}
diff --git a/net/tipc/port.h b/net/tipc/port.h
index fb66e2e5f4d1..5a7026b9c345 100644
--- a/net/tipc/port.h
+++ b/net/tipc/port.h
@@ -2,7 +2,7 @@
  * net/tipc/port.h: Include file for TIPC port code
  *
  * Copyright (c) 1994-2007, Ericsson AB
- * Copyright (c) 2004-2007, 2010-2011, Wind River Systems
+ * Copyright (c) 2004-2007, 2010-2013, Wind River Systems
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
@@ -43,60 +43,12 @@
 #include "node_subscr.h"
 
 #define TIPC_FLOW_CONTROL_WIN 512
-
-typedef void (*tipc_msg_err_event) (void *usr_handle, u32 portref,
-                struct sk_buff **buf, unsigned char const *data,
-                unsigned int size, int reason,
-                struct tipc_portid const *attmpt_destid);
-
-typedef void (*tipc_named_msg_err_event) (void *usr_handle, u32 portref,
-                struct sk_buff **buf, unsigned char const *data,
-                unsigned int size, int reason,
-                struct tipc_name_seq const *attmpt_dest);
-
-typedef void (*tipc_conn_shutdown_event) (void *usr_handle, u32 portref,
-                struct sk_buff **buf, unsigned char const *data,
-                unsigned int size, int reason);
-
-typedef void (*tipc_msg_event) (void *usr_handle, u32 portref,
-                struct sk_buff **buf, unsigned char const *data,
-                unsigned int size, unsigned int importance,
-                struct tipc_portid const *origin);
-
-typedef void (*tipc_named_msg_event) (void *usr_handle, u32 portref,
-                struct sk_buff **buf, unsigned char const *data,
-                unsigned int size, unsigned int importance,
-                struct tipc_portid const *orig,
-                struct tipc_name_seq const *dest);
-
-typedef void (*tipc_conn_msg_event) (void *usr_handle, u32 portref,
-                struct sk_buff **buf, unsigned char const *data,
-                unsigned int size);
-
-typedef void (*tipc_continue_event) (void *usr_handle, u32 portref);
-
-/**
- * struct user_port - TIPC user port (used with native API)
- * @usr_handle: user-specified field
- * @ref: object reference to associated TIPC port
- *
- * <various callback routines>
- */
-struct user_port {
-        void *usr_handle;
-        u32 ref;
-        tipc_msg_err_event err_cb;
-        tipc_named_msg_err_event named_err_cb;
-        tipc_conn_shutdown_event conn_err_cb;
-        tipc_msg_event msg_cb;
-        tipc_named_msg_event named_msg_cb;
-        tipc_conn_msg_event conn_msg_cb;
-        tipc_continue_event continue_event_cb;
-};
+#define CONN_OVERLOAD_LIMIT     ((TIPC_FLOW_CONTROL_WIN * 2 + 1) * \
+                                SKB_TRUESIZE(TIPC_MAX_USER_MSG_SIZE))
 
 /**
  * struct tipc_port - TIPC port structure
- * @usr_handle: pointer to additional user-defined information about port
+ * @sk: pointer to socket handle
  * @lock: pointer to spinlock for controlling access to port
  * @connected: non-zero if port is currently connected to a peer port
  * @conn_type: TIPC type used when connection was established
@@ -110,7 +62,6 @@ struct user_port {
  * @port_list: adjacent ports in TIPC's global list of ports
  * @dispatcher: ptr to routine which handles received messages
  * @wakeup: ptr to routine to call when port is no longer congested
- * @user_port: ptr to user port associated with port (if any)
  * @wait_list: adjacent ports in list of ports waiting on link congestion
  * @waiting_pkts:
  * @sent: # of non-empty messages sent by port
@@ -123,7 +74,7 @@ struct user_port {
  * @subscription: "node down" subscription used to terminate failed connections
  */
 struct tipc_port {
-        void *usr_handle;
+        struct sock *sk;
         spinlock_t *lock;
         int connected;
         u32 conn_type;
@@ -137,7 +88,6 @@ struct tipc_port {
         struct list_head port_list;
         u32 (*dispatcher)(struct tipc_port *, struct sk_buff *);
         void (*wakeup)(struct tipc_port *);
-        struct user_port *user_port;
         struct list_head wait_list;
         u32 waiting_pkts;
         u32 sent;
@@ -156,24 +106,16 @@ struct tipc_port_list;
 /*
  * TIPC port manipulation routines
  */
-struct tipc_port *tipc_createport_raw(void *usr_handle,
-                u32 (*dispatcher)(struct tipc_port *, struct sk_buff *),
-                void (*wakeup)(struct tipc_port *), const u32 importance);
+struct tipc_port *tipc_createport(struct sock *sk,
+                                  u32 (*dispatcher)(struct tipc_port *,
+                                  struct sk_buff *),
+                                  void (*wakeup)(struct tipc_port *),
+                                  const u32 importance);
 
 int tipc_reject_msg(struct sk_buff *buf, u32 err);
 
-int tipc_send_buf_fast(struct sk_buff *buf, u32 destnode);
-
 void tipc_acknowledge(u32 port_ref, u32 ack);
 
-int tipc_createport(void *usr_handle,
-                unsigned int importance, tipc_msg_err_event error_cb,
-                tipc_named_msg_err_event named_error_cb,
-                tipc_conn_shutdown_event conn_error_cb, tipc_msg_event msg_cb,
-                tipc_named_msg_event named_msg_cb,
-                tipc_conn_msg_event conn_msg_cb,
-                tipc_continue_event continue_event_cb, u32 *portref);
-
 int tipc_deleteport(u32 portref);
 
 int tipc_portimportance(u32 portref, unsigned int *importance);
@@ -186,9 +128,9 @@ int tipc_portunreturnable(u32 portref, unsigned int *isunreturnable);
 int tipc_set_portunreturnable(u32 portref, unsigned int isunreturnable);
 
 int tipc_publish(u32 portref, unsigned int scope,
-                struct tipc_name_seq const *name_seq);
+                 struct tipc_name_seq const *name_seq);
 int tipc_withdraw(u32 portref, unsigned int scope,
-                struct tipc_name_seq const *name_seq);
+                  struct tipc_name_seq const *name_seq);
 
 int tipc_connect(u32 portref, struct tipc_portid const *port);
 
@@ -220,9 +162,6 @@ int tipc_send2port(u32 portref, struct tipc_portid const *dest,
                    unsigned int num_sect, struct iovec const *msg_sect,
                    unsigned int total_len);
 
-int tipc_send_buf2port(u32 portref, struct tipc_portid const *dest,
-                struct sk_buff *buf, unsigned int dsz);
-
 int tipc_multicast(u32 portref, struct tipc_name_seq const *seq,
                    unsigned int section_count, struct iovec const *msg,
                    unsigned int total_len);
diff --git a/net/tipc/server.c b/net/tipc/server.c
new file mode 100644
index 000000000000..19da5abe0fa6
--- /dev/null
+++ b/net/tipc/server.c
@@ -0,0 +1,596 @@
+/*
+ * net/tipc/server.c: TIPC server infrastructure
+ *
+ * Copyright (c) 2012-2013, Wind River Systems
+ * 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 names of the copyright holders nor the names of its
+ *    contributors may be used to endorse or promote products derived from
+ *    this software without specific prior written permission.
+ *
+ * Alternatively, this software may be distributed under the terms of the
+ * GNU General Public License ("GPL") version 2 as published by the Free
+ * Software Foundation.
+ *
+ * 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 "server.h"
+#include "core.h"
+#include <net/sock.h>
+
+/* Number of messages to send before rescheduling */
+#define MAX_SEND_MSG_COUNT      25
+#define MAX_RECV_MSG_COUNT      25
+#define CF_CONNECTED            1
+
+#define sock2con(x) ((struct tipc_conn *)(x)->sk_user_data)
+
+/**
+ * struct tipc_conn - TIPC connection structure
+ * @kref: reference counter to connection object
+ * @conid: connection identifier
+ * @sock: socket handler associated with connection
+ * @flags: indicates connection state
+ * @server: pointer to connected server
+ * @rwork: receive work item
+ * @usr_data: user-specified field
+ * @rx_action: what to do when connection socket is active
+ * @outqueue: pointer to first outbound message in queue
+ * @outqueue_lock: controll access to the outqueue
+ * @outqueue: list of connection objects for its server
+ * @swork: send work item
+ */
+struct tipc_conn {
+        struct kref kref;
+        int conid;
+        struct socket *sock;
+        unsigned long flags;
+        struct tipc_server *server;
+        struct work_struct rwork;
+        int (*rx_action) (struct tipc_conn *con);
+        void *usr_data;
+        struct list_head outqueue;
+        spinlock_t outqueue_lock;
+        struct work_struct swork;
+};
+
+/* An entry waiting to be sent */
+struct outqueue_entry {
+        struct list_head list;
+        struct kvec iov;
+        struct sockaddr_tipc dest;
+};
+
+static void tipc_recv_work(struct work_struct *work);
+static void tipc_send_work(struct work_struct *work);
+static void tipc_clean_outqueues(struct tipc_conn *con);
+
+static void tipc_conn_kref_release(struct kref *kref)
+{
+        struct tipc_conn *con = container_of(kref, struct tipc_conn, kref);
+        struct tipc_server *s = con->server;
+
+        if (con->sock) {
+                tipc_sock_release_local(con->sock);
+                con->sock = NULL;
+        }
+
+        tipc_clean_outqueues(con);
+
+        if (con->conid)
+                s->tipc_conn_shutdown(con->conid, con->usr_data);
+
+        kfree(con);
+}
+
+static void conn_put(struct tipc_conn *con)
+{
+        kref_put(&con->kref, tipc_conn_kref_release);
+}
+
+static void conn_get(struct tipc_conn *con)
+{
+        kref_get(&con->kref);
+}
+
+static struct tipc_conn *tipc_conn_lookup(struct tipc_server *s, int conid)
+{
+        struct tipc_conn *con;
+
+        spin_lock_bh(&s->idr_lock);
+        con = idr_find(&s->conn_idr, conid);
+        if (con)
+                conn_get(con);
+        spin_unlock_bh(&s->idr_lock);
+        return con;
+}
+
+static void sock_data_ready(struct sock *sk, int unused)
+{
+        struct tipc_conn *con;
+
+        read_lock(&sk->sk_callback_lock);
+        con = sock2con(sk);
+        if (con && test_bit(CF_CONNECTED, &con->flags)) {
+                conn_get(con);
+                if (!queue_work(con->server->rcv_wq, &con->rwork))
+                        conn_put(con);
+        }
+        read_unlock(&sk->sk_callback_lock);
+}
+
+static void sock_write_space(struct sock *sk)
+{
+        struct tipc_conn *con;
+
+        read_lock(&sk->sk_callback_lock);
+        con = sock2con(sk);
+        if (con && test_bit(CF_CONNECTED, &con->flags)) {
+                conn_get(con);
+                if (!queue_work(con->server->send_wq, &con->swork))
+                        conn_put(con);
+        }
+        read_unlock(&sk->sk_callback_lock);
+}
+
+static void tipc_register_callbacks(struct socket *sock, struct tipc_conn *con)
+{
+        struct sock *sk = sock->sk;
+
+        write_lock_bh(&sk->sk_callback_lock);
+
+        sk->sk_data_ready = sock_data_ready;
+        sk->sk_write_space = sock_write_space;
+        sk->sk_user_data = con;
+
+        con->sock = sock;
+
+        write_unlock_bh(&sk->sk_callback_lock);
+}
+
+static void tipc_unregister_callbacks(struct tipc_conn *con)
+{
+        struct sock *sk = con->sock->sk;
+
+        write_lock_bh(&sk->sk_callback_lock);
+        sk->sk_user_data = NULL;
+        write_unlock_bh(&sk->sk_callback_lock);
+}
+
+static void tipc_close_conn(struct tipc_conn *con)
+{
+        struct tipc_server *s = con->server;
+
+        if (test_and_clear_bit(CF_CONNECTED, &con->flags)) {
+                spin_lock_bh(&s->idr_lock);
+                idr_remove(&s->conn_idr, con->conid);
+                s->idr_in_use--;
+                spin_unlock_bh(&s->idr_lock);
+
+                tipc_unregister_callbacks(con);
+
+                /* We shouldn't flush pending works as we may be in the
+                 * thread. In fact the races with pending rx/tx work structs
+                 * are harmless for us here as we have already deleted this
+                 * connection from server connection list and set
+                 * sk->sk_user_data to 0 before releasing connection object.
+                 */
+                kernel_sock_shutdown(con->sock, SHUT_RDWR);
+
+                conn_put(con);
+        }
+}
+
+static struct tipc_conn *tipc_alloc_conn(struct tipc_server *s)
+{
+        struct tipc_conn *con;
+        int ret;
+
+        con = kzalloc(sizeof(struct tipc_conn), GFP_ATOMIC);
+        if (!con)
+                return ERR_PTR(-ENOMEM);
+
+        kref_init(&con->kref);
+        INIT_LIST_HEAD(&con->outqueue);
+        spin_lock_init(&con->outqueue_lock);
+        INIT_WORK(&con->swork, tipc_send_work);
+        INIT_WORK(&con->rwork, tipc_recv_work);
+
+        spin_lock_bh(&s->idr_lock);
+        ret = idr_alloc(&s->conn_idr, con, 0, 0, GFP_ATOMIC);
+        if (ret < 0) {
+                kfree(con);
+                spin_unlock_bh(&s->idr_lock);
+                return ERR_PTR(-ENOMEM);
+        }
+        con->conid = ret;
+        s->idr_in_use++;
+        spin_unlock_bh(&s->idr_lock);
+
+        set_bit(CF_CONNECTED, &con->flags);
+        con->server = s;
+
+        return con;
+}
+
+static int tipc_receive_from_sock(struct tipc_conn *con)
+{
+        struct msghdr msg = {};
+        struct tipc_server *s = con->server;
+        struct sockaddr_tipc addr;
+        struct kvec iov;
+        void *buf;
+        int ret;
+
+        buf = kmem_cache_alloc(s->rcvbuf_cache, GFP_ATOMIC);
+        if (!buf) {
+                ret = -ENOMEM;
+                goto out_close;
+        }
+
+        iov.iov_base = buf;
+        iov.iov_len = s->max_rcvbuf_size;
+        msg.msg_name = &addr;
+        ret = kernel_recvmsg(con->sock, &msg, &iov, 1, iov.iov_len,
+                             MSG_DONTWAIT);
+        if (ret <= 0) {
+                kmem_cache_free(s->rcvbuf_cache, buf);
+                goto out_close;
+        }
+
+        s->tipc_conn_recvmsg(con->conid, &addr, con->usr_data, buf, ret);
+
+        kmem_cache_free(s->rcvbuf_cache, buf);
+
+        return 0;
+
+out_close:
+        if (ret != -EWOULDBLOCK)
+                tipc_close_conn(con);
+        else if (ret == 0)
+                /* Don't return success if we really got EOF */
+                ret = -EAGAIN;
+
+        return ret;
+}
+
+static int tipc_accept_from_sock(struct tipc_conn *con)
+{
+        struct tipc_server *s = con->server;
+        struct socket *sock = con->sock;
+        struct socket *newsock;
+        struct tipc_conn *newcon;
+        int ret;
+
+        ret = tipc_sock_accept_local(sock, &newsock, O_NONBLOCK);
+        if (ret < 0)
+                return ret;
+
+        newcon = tipc_alloc_conn(con->server);
+        if (IS_ERR(newcon)) {
+                ret = PTR_ERR(newcon);
+                sock_release(newsock);
+                return ret;
+        }
+
+        newcon->rx_action = tipc_receive_from_sock;
+        tipc_register_callbacks(newsock, newcon);
+
+        /* Notify that new connection is incoming */
+        newcon->usr_data = s->tipc_conn_new(newcon->conid);
+
+        /* Wake up receive process in case of 'SYN+' message */
+        newsock->sk->sk_data_ready(newsock->sk, 0);
+        return ret;
+}
+
+static struct socket *tipc_create_listen_sock(struct tipc_conn *con)
+{
+        struct tipc_server *s = con->server;
+        struct socket *sock = NULL;
+        int ret;
+
+        ret = tipc_sock_create_local(s->type, &sock);
+        if (ret < 0)
+                return NULL;
+        ret = kernel_setsockopt(sock, SOL_TIPC, TIPC_IMPORTANCE,
+                                (char *)&s->imp, sizeof(s->imp));
+        if (ret < 0)
+                goto create_err;
+        ret = kernel_bind(sock, (struct sockaddr *)s->saddr, sizeof(*s->saddr));
+        if (ret < 0)
+                goto create_err;
+
+        switch (s->type) {
+        case SOCK_STREAM:
+        case SOCK_SEQPACKET:
+                con->rx_action = tipc_accept_from_sock;
+
+                ret = kernel_listen(sock, 0);
+                if (ret < 0)
+                        goto create_err;
+                break;
+        case SOCK_DGRAM:
+        case SOCK_RDM:
+                con->rx_action = tipc_receive_from_sock;
+                break;
+        default:
+                pr_err("Unknown socket type %d\n", s->type);
+                goto create_err;
+        }
+        return sock;
+
+create_err:
+        sock_release(sock);
+        con->sock = NULL;
+        return NULL;
+}
+
+static int tipc_open_listening_sock(struct tipc_server *s)
+{
+        struct socket *sock;
+        struct tipc_conn *con;
+
+        con = tipc_alloc_conn(s);
+        if (IS_ERR(con))
+                return PTR_ERR(con);
+
+        sock = tipc_create_listen_sock(con);
+        if (!sock)
+                return -EINVAL;
+
+        tipc_register_callbacks(sock, con);
+        return 0;
+}
+
+static struct outqueue_entry *tipc_alloc_entry(void *data, int len)
+{
+        struct outqueue_entry *entry;
+        void *buf;
+
+        entry = kmalloc(sizeof(struct outqueue_entry), GFP_ATOMIC);
+        if (!entry)
+                return NULL;
+
+        buf = kmalloc(len, GFP_ATOMIC);
+        if (!buf) {
+                kfree(entry);
+                return NULL;
+        }
+
+        memcpy(buf, data, len);
+        entry->iov.iov_base = buf;
+        entry->iov.iov_len = len;
+
+        return entry;
+}
+
+static void tipc_free_entry(struct outqueue_entry *e)
+{
+        kfree(e->iov.iov_base);
+        kfree(e);
+}
+
+static void tipc_clean_outqueues(struct tipc_conn *con)
+{
+        struct outqueue_entry *e, *safe;
+
+        spin_lock_bh(&con->outqueue_lock);
+        list_for_each_entry_safe(e, safe, &con->outqueue, list) {
+                list_del(&e->list);
+                tipc_free_entry(e);
+        }
+        spin_unlock_bh(&con->outqueue_lock);
+}
+
+int tipc_conn_sendmsg(struct tipc_server *s, int conid,
+                      struct sockaddr_tipc *addr, void *data, size_t len)
+{
+        struct outqueue_entry *e;
+        struct tipc_conn *con;
+
+        con = tipc_conn_lookup(s, conid);
+        if (!con)
+                return -EINVAL;
+
+        e = tipc_alloc_entry(data, len);
+        if (!e) {
+                conn_put(con);
+                return -ENOMEM;
+        }
+
+        if (addr)
+                memcpy(&e->dest, addr, sizeof(struct sockaddr_tipc));
+
+        spin_lock_bh(&con->outqueue_lock);
+        list_add_tail(&e->list, &con->outqueue);
+        spin_unlock_bh(&con->outqueue_lock);
+
+        if (test_bit(CF_CONNECTED, &con->flags))
+                if (!queue_work(s->send_wq, &con->swork))
+                        conn_put(con);
+
+        return 0;
+}
+
+void tipc_conn_terminate(struct tipc_server *s, int conid)
+{
+        struct tipc_conn *con;
+
+        con = tipc_conn_lookup(s, conid);
+        if (con) {
+                tipc_close_conn(con);
+                conn_put(con);
+        }
+}
+
+static void tipc_send_to_sock(struct tipc_conn *con)
+{
+        int count = 0;
+        struct tipc_server *s = con->server;
+        struct outqueue_entry *e;
+        struct msghdr msg;
+        int ret;
+
+        spin_lock_bh(&con->outqueue_lock);
+        while (1) {
+                e = list_entry(con->outqueue.next, struct outqueue_entry,
+                               list);
+                if ((struct list_head *) e == &con->outqueue)
+                        break;
+                spin_unlock_bh(&con->outqueue_lock);
+
+                memset(&msg, 0, sizeof(msg));
+                msg.msg_flags = MSG_DONTWAIT;
+
+                if (s->type == SOCK_DGRAM || s->type == SOCK_RDM) {
+                        msg.msg_name = &e->dest;
+                        msg.msg_namelen = sizeof(struct sockaddr_tipc);
+                }
+                ret = kernel_sendmsg(con->sock, &msg, &e->iov, 1,
+                                     e->iov.iov_len);
+                if (ret == -EWOULDBLOCK || ret == 0) {
+                        cond_resched();
+                        goto out;
+                } else if (ret < 0) {
+                        goto send_err;
+                }
+
+                /* Don't starve users filling buffers */
+                if (++count >= MAX_SEND_MSG_COUNT) {
+                        cond_resched();
+                        count = 0;
+                }
+
+                spin_lock_bh(&con->outqueue_lock);
+                list_del(&e->list);
+                tipc_free_entry(e);
+        }
+        spin_unlock_bh(&con->outqueue_lock);
+out:
+        return;
+
+send_err:
+        tipc_close_conn(con);
+}
+
+static void tipc_recv_work(struct work_struct *work)
+{
+        struct tipc_conn *con = container_of(work, struct tipc_conn, rwork);
+        int count = 0;
+
+        while (test_bit(CF_CONNECTED, &con->flags)) {
+                if (con->rx_action(con))
+                        break;
+
+                /* Don't flood Rx machine */
+                if (++count >= MAX_RECV_MSG_COUNT) {
+                        cond_resched();
+                        count = 0;
+                }
+        }
+        conn_put(con);
+}
+
+static void tipc_send_work(struct work_struct *work)
+{
+        struct tipc_conn *con = container_of(work, struct tipc_conn, swork);
+
+        if (test_bit(CF_CONNECTED, &con->flags))
+                tipc_send_to_sock(con);
+
+        conn_put(con);
+}
+
+static void tipc_work_stop(struct tipc_server *s)
+{
+        destroy_workqueue(s->rcv_wq);
+        destroy_workqueue(s->send_wq);
+}
+
+static int tipc_work_start(struct tipc_server *s)
+{
+        s->rcv_wq = alloc_workqueue("tipc_rcv", WQ_UNBOUND, 1);
+        if (!s->rcv_wq) {
+                pr_err("can't start tipc receive workqueue\n");
+                return -ENOMEM;
+        }
+
+        s->send_wq = alloc_workqueue("tipc_send", WQ_UNBOUND, 1);
+        if (!s->send_wq) {
+                pr_err("can't start tipc send workqueue\n");
+                destroy_workqueue(s->rcv_wq);
+                return -ENOMEM;
+        }
+
+        return 0;
+}
+
+int tipc_server_start(struct tipc_server *s)
+{
+        int ret;
+
+        spin_lock_init(&s->idr_lock);
+        idr_init(&s->conn_idr);
+        s->idr_in_use = 0;
+
+        s->rcvbuf_cache = kmem_cache_create(s->name, s->max_rcvbuf_size,
+                                            0, SLAB_HWCACHE_ALIGN, NULL);
+        if (!s->rcvbuf_cache)
+                return -ENOMEM;
+
+        ret = tipc_work_start(s);
+        if (ret < 0) {
+                kmem_cache_destroy(s->rcvbuf_cache);
+                return ret;
+        }
+        s->enabled = 1;
+
+        return tipc_open_listening_sock(s);
+}
+
+void tipc_server_stop(struct tipc_server *s)
+{
+        struct tipc_conn *con;
+        int total = 0;
+        int id;
+
+        if (!s->enabled)
+                return;
+
+        s->enabled = 0;
+        spin_lock_bh(&s->idr_lock);
+        for (id = 0; total < s->idr_in_use; id++) {
+                con = idr_find(&s->conn_idr, id);
+                if (con) {
+                        total++;
+                        spin_unlock_bh(&s->idr_lock);
+                        tipc_close_conn(con);
+                        spin_lock_bh(&s->idr_lock);
+                }
+        }
+        spin_unlock_bh(&s->idr_lock);
+
+        tipc_work_stop(s);
+        kmem_cache_destroy(s->rcvbuf_cache);
+        idr_destroy(&s->conn_idr);
+}
diff --git a/net/tipc/server.h b/net/tipc/server.h
new file mode 100644
index 000000000000..98b23f20bc0f
--- /dev/null
+++ b/net/tipc/server.h
@@ -0,0 +1,94 @@
+/*
+ * net/tipc/server.h: Include file for TIPC server code
+ *
+ * Copyright (c) 2012-2013, Wind River Systems
+ * 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 names of the copyright holders nor the names of its
+ *    contributors may be used to endorse or promote products derived from
+ *    this software without specific prior written permission.
+ *
+ * Alternatively, this software may be distributed under the terms of the
+ * GNU General Public License ("GPL") version 2 as published by the Free
+ * Software Foundation.
+ *
+ * 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.
+ */
+
+#ifndef _TIPC_SERVER_H
+#define _TIPC_SERVER_H
+
+#include "core.h"
+
+#define TIPC_SERVER_NAME_LEN    32
+
+/**
+ * struct tipc_server - TIPC server structure
+ * @conn_idr: identifier set of connection
+ * @idr_lock: protect the connection identifier set
+ * @idr_in_use: amount of allocated identifier entry
+ * @rcvbuf_cache: memory cache of server receive buffer
+ * @rcv_wq: receive workqueue
+ * @send_wq: send workqueue
+ * @max_rcvbuf_size: maximum permitted receive message length
+ * @tipc_conn_new: callback will be called when new connection is incoming
+ * @tipc_conn_shutdown: callback will be called when connection is shut down
+ * @tipc_conn_recvmsg: callback will be called when message arrives
+ * @saddr: TIPC server address
+ * @name: server name
+ * @imp: message importance
+ * @type: socket type
+ * @enabled: identify whether server is launched or not
+ */
+struct tipc_server {
+        struct idr conn_idr;
+        spinlock_t idr_lock;
+        int idr_in_use;
+        struct kmem_cache *rcvbuf_cache;
+        struct workqueue_struct *rcv_wq;
+        struct workqueue_struct *send_wq;
+        int max_rcvbuf_size;
+        void *(*tipc_conn_new) (int conid);
+        void (*tipc_conn_shutdown) (int conid, void *usr_data);
+        void (*tipc_conn_recvmsg) (int conid, struct sockaddr_tipc *addr,
+                                   void *usr_data, void *buf, size_t len);
+        struct sockaddr_tipc *saddr;
+        const char name[TIPC_SERVER_NAME_LEN];
+        int imp;
+        int type;
+        int enabled;
+};
+
+int tipc_conn_sendmsg(struct tipc_server *s, int conid,
+                      struct sockaddr_tipc *addr, void *data, size_t len);
+
+/**
+ * tipc_conn_terminate - terminate connection with server
+ *
+ * Note: Must call it in process context since it might sleep
+ */
+void tipc_conn_terminate(struct tipc_server *s, int conid);
+
+int tipc_server_start(struct tipc_server *s);
+
+void tipc_server_stop(struct tipc_server *s);
+
+#endif
diff --git a/net/tipc/socket.c b/net/tipc/socket.c
index 515ce38e4f4c..ce8249c76827 100644
--- a/net/tipc/socket.c
+++ b/net/tipc/socket.c
@@ -2,7 +2,7 @@
  * net/tipc/socket.c: TIPC socket API
  *
  * Copyright (c) 2001-2007, 2012 Ericsson AB
- * Copyright (c) 2004-2008, 2010-2012, Wind River Systems
+ * Copyright (c) 2004-2008, 2010-2013, Wind River Systems
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
@@ -43,8 +43,6 @@
 #define SS_LISTENING    -1      /* socket is listening */
 #define SS_READY        -2      /* socket is connectionless */
 
-#define CONN_OVERLOAD_LIMIT     ((TIPC_FLOW_CONTROL_WIN * 2 + 1) * \
-                                SKB_TRUESIZE(TIPC_MAX_USER_MSG_SIZE))
 #define CONN_TIMEOUT_DEFAULT    8000    /* default connect timeout = 8s */
 
 struct tipc_sock {
@@ -65,12 +63,15 @@ static u32 dispatch(struct tipc_port *tport, struct sk_buff *buf);
 static void wakeupdispatch(struct tipc_port *tport);
 static void tipc_data_ready(struct sock *sk, int len);
 static void tipc_write_space(struct sock *sk);
+static int release(struct socket *sock);
+static int accept(struct socket *sock, struct socket *new_sock, int flags);
 
 static const struct proto_ops packet_ops;
 static const struct proto_ops stream_ops;
 static const struct proto_ops msg_ops;
 
 static struct proto tipc_proto;
+static struct proto tipc_proto_kern;
 
 static int sockets_enabled;
 
@@ -143,7 +144,7 @@ static void reject_rx_queue(struct sock *sk)
 }
 
 /**
- * tipc_create - create a TIPC socket
+ * tipc_sk_create - create a TIPC socket
  * @net: network namespace (must be default network)
  * @sock: pre-allocated socket structure
  * @protocol: protocol indicator (must be 0)
@@ -154,8 +155,8 @@ static void reject_rx_queue(struct sock *sk)
  *
  * Returns 0 on success, errno otherwise
  */
-static int tipc_create(struct net *net, struct socket *sock, int protocol,
-                       int kern)
+static int tipc_sk_create(struct net *net, struct socket *sock, int protocol,
+                          int kern)
 {
         const struct proto_ops *ops;
         socket_state state;
@@ -185,13 +186,17 @@ static int tipc_create(struct net *net, struct socket *sock, int protocol,
         }
 
         /* Allocate socket's protocol area */
-        sk = sk_alloc(net, AF_TIPC, GFP_KERNEL, &tipc_proto);
+        if (!kern)
+                sk = sk_alloc(net, AF_TIPC, GFP_KERNEL, &tipc_proto);
+        else
+                sk = sk_alloc(net, AF_TIPC, GFP_KERNEL, &tipc_proto_kern);
+
         if (sk == NULL)
                 return -ENOMEM;
 
         /* Allocate TIPC port for socket to use */
-        tp_ptr = tipc_createport_raw(sk, &dispatch, &wakeupdispatch,
-                                     TIPC_LOW_IMPORTANCE);
+        tp_ptr = tipc_createport(sk, &dispatch, &wakeupdispatch,
+                                 TIPC_LOW_IMPORTANCE);
         if (unlikely(!tp_ptr)) {
                 sk_free(sk);
                 return -ENOMEM;
@@ -203,6 +208,7 @@ static int tipc_create(struct net *net, struct socket *sock, int protocol,
 
         sock_init_data(sock, sk);
         sk->sk_backlog_rcv = backlog_rcv;
+        sk->sk_rcvbuf = sysctl_tipc_rmem[1];
         sk->sk_data_ready = tipc_data_ready;
         sk->sk_write_space = tipc_write_space;
         tipc_sk(sk)->p = tp_ptr;
@@ -220,6 +226,78 @@ static int tipc_create(struct net *net, struct socket *sock, int protocol,
 }
 
 /**
+ * tipc_sock_create_local - create TIPC socket from inside TIPC module
+ * @type: socket type - SOCK_RDM or SOCK_SEQPACKET
+ *
+ * We cannot use sock_creat_kern here because it bumps module user count.
+ * Since socket owner and creator is the same module we must make sure
+ * that module count remains zero for module local sockets, otherwise
+ * we cannot do rmmod.
+ *
+ * Returns 0 on success, errno otherwise
+ */
+int tipc_sock_create_local(int type, struct socket **res)
+{
+        int rc;
+        struct sock *sk;
+
+        rc = sock_create_lite(AF_TIPC, type, 0, res);
+        if (rc < 0) {
+                pr_err("Failed to create kernel socket\n");
+                return rc;
+        }
+        tipc_sk_create(&init_net, *res, 0, 1);
+
+        sk = (*res)->sk;
+
+        return 0;
+}
+
+/**
+ * tipc_sock_release_local - release socket created by tipc_sock_create_local
+ * @sock: the socket to be released.
+ *
+ * Module reference count is not incremented when such sockets are created,
+ * so we must keep it from being decremented when they are released.
+ */
+void tipc_sock_release_local(struct socket *sock)
+{
+        release(sock);
+        sock->ops = NULL;
+        sock_release(sock);
+}
+
+/**
+ * tipc_sock_accept_local - accept a connection on a socket created
+ * with tipc_sock_create_local. Use this function to avoid that
+ * module reference count is inadvertently incremented.
+ *
+ * @sock:    the accepting socket
+ * @newsock: reference to the new socket to be created
+ * @flags:   socket flags
+ */
+
+int tipc_sock_accept_local(struct socket *sock, struct socket **newsock,
+                           int flags)
+{
+        struct sock *sk = sock->sk;
+        int ret;
+
+        ret = sock_create_lite(sk->sk_family, sk->sk_type,
+                               sk->sk_protocol, newsock);
+        if (ret < 0)
+                return ret;
+
+        ret = accept(sock, *newsock, flags);
+        if (ret < 0) {
+                sock_release(*newsock);
+                return ret;
+        }
+        (*newsock)->ops = sock->ops;
+        return ret;
+}
+
+/**
  * release - destroy a TIPC socket
  * @sock: socket to destroy
  *
@@ -324,7 +402,9 @@ static int bind(struct socket *sock, struct sockaddr *uaddr, int uaddr_len)
         else if (addr->addrtype != TIPC_ADDR_NAMESEQ)
                 return -EAFNOSUPPORT;
 
-        if (addr->addr.nameseq.type < TIPC_RESERVED_TYPES)
+        if ((addr->addr.nameseq.type < TIPC_RESERVED_TYPES) &&
+            (addr->addr.nameseq.type != TIPC_TOP_SRV) &&
+            (addr->addr.nameseq.type != TIPC_CFG_SRV))
                 return -EACCES;
 
         return (addr->scope > 0) ?
@@ -519,8 +599,7 @@ static int send_msg(struct kiocb *iocb, struct socket *sock,
                         res = -EISCONN;
                         goto exit;
                 }
-                if ((tport->published) ||
-                    ((sock->type == SOCK_STREAM) && (total_len != 0))) {
+                if (tport->published) {
                         res = -EOPNOTSUPP;
                         goto exit;
                 }
@@ -810,7 +889,7 @@ static void set_orig_addr(struct msghdr *m, struct tipc_msg *msg)
  * Returns 0 if successful, otherwise errno
  */
 static int anc_data_recv(struct msghdr *m, struct tipc_msg *msg,
-                                struct tipc_port *tport)
+                         struct tipc_port *tport)
 {
         u32 anc_data[3];
         u32 err;
@@ -1011,8 +1090,7 @@ static int recv_stream(struct kiocb *iocb, struct socket *sock,
 
         lock_sock(sk);
 
-        if (unlikely((sock->state == SS_UNCONNECTED) ||
-                     (sock->state == SS_CONNECTING))) {
+        if (unlikely((sock->state == SS_UNCONNECTED))) {
                 res = -ENOTCONN;
                 goto exit;
         }
@@ -1233,10 +1311,10 @@ static u32 filter_connect(struct tipc_sock *tsock, struct sk_buff **buf)
  * For all connectionless messages, by default new queue limits are
  * as belows:
  *
- * TIPC_LOW_IMPORTANCE       (5MB)
- * TIPC_MEDIUM_IMPORTANCE    (10MB)
- * TIPC_HIGH_IMPORTANCE      (20MB)
- * TIPC_CRITICAL_IMPORTANCE  (40MB)
+ * TIPC_LOW_IMPORTANCE       (4 MB)
+ * TIPC_MEDIUM_IMPORTANCE    (8 MB)
+ * TIPC_HIGH_IMPORTANCE      (16 MB)
+ * TIPC_CRITICAL_IMPORTANCE  (32 MB)
  *
  * Returns overload limit according to corresponding message importance
  */
@@ -1246,9 +1324,10 @@ static unsigned int rcvbuf_limit(struct sock *sk, struct sk_buff *buf)
         unsigned int limit;
 
         if (msg_connected(msg))
-                limit = CONN_OVERLOAD_LIMIT;
+                limit = sysctl_tipc_rmem[2];
         else
-                limit = sk->sk_rcvbuf << (msg_importance(msg) + 5);
+                limit = sk->sk_rcvbuf >> TIPC_CRITICAL_IMPORTANCE <<
+                        msg_importance(msg);
         return limit;
 }
 
@@ -1327,7 +1406,7 @@ static int backlog_rcv(struct sock *sk, struct sk_buff *buf)
  */
 static u32 dispatch(struct tipc_port *tport, struct sk_buff *buf)
 {
-        struct sock *sk = (struct sock *)tport->usr_handle;
+        struct sock *sk = tport->sk;
         u32 res;
 
         /*
@@ -1358,7 +1437,7 @@ static u32 dispatch(struct tipc_port *tport, struct sk_buff *buf)
  */
 static void wakeupdispatch(struct tipc_port *tport)
 {
-        struct sock *sk = (struct sock *)tport->usr_handle;
+        struct sock *sk = tport->sk;
 
         sk->sk_write_space(sk);
 }
@@ -1531,7 +1610,7 @@ static int accept(struct socket *sock, struct socket *new_sock, int flags)
 
         buf = skb_peek(&sk->sk_receive_queue);
 
-        res = tipc_create(sock_net(sock->sk), new_sock, 0, 0);
+        res = tipc_sk_create(sock_net(sock->sk), new_sock, 0, 1);
         if (res)
                 goto exit;
 
@@ -1657,8 +1736,8 @@ restart:
  *
  * Returns 0 on success, errno otherwise
  */
-static int setsockopt(struct socket *sock,
-                      int lvl, int opt, char __user *ov, unsigned int ol)
+static int setsockopt(struct socket *sock, int lvl, int opt, char __user *ov,
+                      unsigned int ol)
 {
         struct sock *sk = sock->sk;
         struct tipc_port *tport = tipc_sk_port(sk);
@@ -1716,8 +1795,8 @@ static int setsockopt(struct socket *sock,
  *
  * Returns 0 on success, errno otherwise
  */
-static int getsockopt(struct socket *sock,
-                      int lvl, int opt, char __user *ov, int __user *ol)
+static int getsockopt(struct socket *sock, int lvl, int opt, char __user *ov,
+                      int __user *ol)
 {
         struct sock *sk = sock->sk;
         struct tipc_port *tport = tipc_sk_port(sk);
@@ -1841,13 +1920,20 @@ static const struct proto_ops stream_ops = {
 static const struct net_proto_family tipc_family_ops = {
         .owner          = THIS_MODULE,
         .family         = AF_TIPC,
-        .create         = tipc_create
+        .create         = tipc_sk_create
 };
 
 static struct proto tipc_proto = {
         .name           = "TIPC",
         .owner          = THIS_MODULE,
-        .obj_size       = sizeof(struct tipc_sock)
+        .obj_size       = sizeof(struct tipc_sock),
+        .sysctl_rmem    = sysctl_tipc_rmem
+};
+
+static struct proto tipc_proto_kern = {
+        .name           = "TIPC",
+        .obj_size       = sizeof(struct tipc_sock),
+        .sysctl_rmem    = sysctl_tipc_rmem
 };
 
 /**
diff --git a/net/tipc/subscr.c b/net/tipc/subscr.c
index 6b42d47029af..d38bb45d82e9 100644
--- a/net/tipc/subscr.c
+++ b/net/tipc/subscr.c
@@ -2,7 +2,7 @@
  * net/tipc/subscr.c: TIPC network topology service
  *
  * Copyright (c) 2000-2006, Ericsson AB
- * Copyright (c) 2005-2007, 2010-2011, Wind River Systems
+ * Copyright (c) 2005-2007, 2010-2013, Wind River Systems
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
@@ -41,33 +41,42 @@
 
 /**
  * struct tipc_subscriber - TIPC network topology subscriber
- * @port_ref: object reference to server port connecting to subscriber
- * @lock: pointer to spinlock controlling access to subscriber's server port
- * @subscriber_list: adjacent subscribers in top. server's list of subscribers
+ * @conid: connection identifier to server connecting to subscriber
+ * @lock: controll access to subscriber
  * @subscription_list: list of subscription objects for this subscriber
  */
 struct tipc_subscriber {
-        u32 port_ref;
-        spinlock_t *lock;
-        struct list_head subscriber_list;
+        int conid;
+        spinlock_t lock;
         struct list_head subscription_list;
 };
 
-/**
- * struct top_srv - TIPC network topology subscription service
- * @setup_port: reference to TIPC port that handles subscription requests
- * @subscription_count: number of active subscriptions (not subscribers!)
- * @subscriber_list: list of ports subscribing to service
- * @lock: spinlock govering access to subscriber list
- */
-struct top_srv {
-        u32 setup_port;
-        atomic_t subscription_count;
-        struct list_head subscriber_list;
-        spinlock_t lock;
+static void subscr_conn_msg_event(int conid, struct sockaddr_tipc *addr,
+                                  void *usr_data, void *buf, size_t len);
+static void *subscr_named_msg_event(int conid);
+static void subscr_conn_shutdown_event(int conid, void *usr_data);
+
+static atomic_t subscription_count = ATOMIC_INIT(0);
+
+static struct sockaddr_tipc topsrv_addr __read_mostly = {
+        .family                 = AF_TIPC,
+        .addrtype               = TIPC_ADDR_NAMESEQ,
+        .addr.nameseq.type      = TIPC_TOP_SRV,
+        .addr.nameseq.lower     = TIPC_TOP_SRV,
+        .addr.nameseq.upper     = TIPC_TOP_SRV,
+        .scope                  = TIPC_NODE_SCOPE
 };
 
-static struct top_srv topsrv;
+static struct tipc_server topsrv __read_mostly = {
+        .saddr                  = &topsrv_addr,
+        .imp                    = TIPC_CRITICAL_IMPORTANCE,
+        .type                   = SOCK_SEQPACKET,
+        .max_rcvbuf_size        = sizeof(struct tipc_subscr),
+        .name                   = "topology_server",
+        .tipc_conn_recvmsg      = subscr_conn_msg_event,
+        .tipc_conn_new          = subscr_named_msg_event,
+        .tipc_conn_shutdown     = subscr_conn_shutdown_event,
+};
 
 /**
  * htohl - convert value to endianness used by destination
@@ -81,20 +90,13 @@ static u32 htohl(u32 in, int swap)
         return swap ? swab32(in) : in;
 }
 
-/**
- * subscr_send_event - send a message containing a tipc_event to the subscriber
- *
- * Note: Must not hold subscriber's server port lock, since tipc_send() will
- *       try to take the lock if the message is rejected and returned!
- */
-static void subscr_send_event(struct tipc_subscription *sub,
-                              u32 found_lower,
-                              u32 found_upper,
-                              u32 event,
-                              u32 port_ref,
+static void subscr_send_event(struct tipc_subscription *sub, u32 found_lower,
+                              u32 found_upper, u32 event, u32 port_ref,
                               u32 node)
 {
-        struct iovec msg_sect;
+        struct tipc_subscriber *subscriber = sub->subscriber;
+        struct kvec msg_sect;
+        int ret;
 
         msg_sect.iov_base = (void *)&sub->evt;
         msg_sect.iov_len = sizeof(struct tipc_event);
@@ -104,7 +106,10 @@ static void subscr_send_event(struct tipc_subscription *sub,
         sub->evt.found_upper = htohl(found_upper, sub->swap);
         sub->evt.port.ref = htohl(port_ref, sub->swap);
         sub->evt.port.node = htohl(node, sub->swap);
-        tipc_send(sub->server_ref, 1, &msg_sect, msg_sect.iov_len);
+        ret = tipc_conn_sendmsg(&topsrv, subscriber->conid, NULL,
+                                msg_sect.iov_base, msg_sect.iov_len);
+        if (ret < 0)
+                pr_err("Sending subscription event failed, no memory\n");
 }
 
 /**
@@ -112,10 +117,8 @@ static void subscr_send_event(struct tipc_subscription *sub,
  *
  * Returns 1 if there is overlap, otherwise 0.
  */
-int tipc_subscr_overlap(struct tipc_subscription *sub,
-                        u32 found_lower,
+int tipc_subscr_overlap(struct tipc_subscription *sub, u32 found_lower,
                         u32 found_upper)
-
 {
         if (found_lower < sub->seq.lower)
                 found_lower = sub->seq.lower;
@@ -131,13 +134,9 @@ int tipc_subscr_overlap(struct tipc_subscription *sub,
  *
  * Protected by nameseq.lock in name_table.c
  */
-void tipc_subscr_report_overlap(struct tipc_subscription *sub,
-                                u32 found_lower,
-                                u32 found_upper,
-                                u32 event,
-                                u32 port_ref,
-                                u32 node,
-                                int must)
+void tipc_subscr_report_overlap(struct tipc_subscription *sub, u32 found_lower,
+                                u32 found_upper, u32 event, u32 port_ref,
+                                u32 node, int must)
 {
         if (!tipc_subscr_overlap(sub, found_lower, found_upper))
                 return;
@@ -147,21 +146,24 @@ void tipc_subscr_report_overlap(struct tipc_subscription *sub,
         subscr_send_event(sub, found_lower, found_upper, event, port_ref, node);
 }
 
-/**
- * subscr_timeout - subscription timeout has occurred
- */
 static void subscr_timeout(struct tipc_subscription *sub)
 {
-        struct tipc_port *server_port;
+        struct tipc_subscriber *subscriber = sub->subscriber;
+
+        /* The spin lock per subscriber is used to protect its members */
+        spin_lock_bh(&subscriber->lock);
 
-        /* Validate server port reference (in case subscriber is terminating) */
-        server_port = tipc_port_lock(sub->server_ref);
-        if (server_port == NULL)
+        /* Validate if the connection related to the subscriber is
+         * closed (in case subscriber is terminating)
+         */
+        if (subscriber->conid == 0) {
+                spin_unlock_bh(&subscriber->lock);
                 return;
+        }
 
         /* Validate timeout (in case subscription is being cancelled) */
         if (sub->timeout == TIPC_WAIT_FOREVER) {
-                tipc_port_unlock(server_port);
+                spin_unlock_bh(&subscriber->lock);
                 return;
         }
 
@@ -171,8 +173,7 @@ static void subscr_timeout(struct tipc_subscription *sub)
         /* Unlink subscription from subscriber */
         list_del(&sub->subscription_list);
 
-        /* Release subscriber's server port */
-        tipc_port_unlock(server_port);
+        spin_unlock_bh(&subscriber->lock);
 
         /* Notify subscriber of timeout */
         subscr_send_event(sub, sub->evt.s.seq.lower, sub->evt.s.seq.upper,
@@ -181,64 +182,54 @@ static void subscr_timeout(struct tipc_subscription *sub)
         /* Now destroy subscription */
         k_term_timer(&sub->timer);
         kfree(sub);
-        atomic_dec(&topsrv.subscription_count);
+        atomic_dec(&subscription_count);
 }
 
 /**
  * subscr_del - delete a subscription within a subscription list
  *
- * Called with subscriber port locked.
+ * Called with subscriber lock held.
  */
 static void subscr_del(struct tipc_subscription *sub)
 {
         tipc_nametbl_unsubscribe(sub);
         list_del(&sub->subscription_list);
         kfree(sub);
-        atomic_dec(&topsrv.subscription_count);
+        atomic_dec(&subscription_count);
 }
 
 /**
  * subscr_terminate - terminate communication with a subscriber
  *
- * Called with subscriber port locked.  Routine must temporarily release lock
- * to enable subscription timeout routine(s) to finish without deadlocking;
- * the lock is then reclaimed to allow caller to release it upon return.
- * (This should work even in the unlikely event some other thread creates
- * a new object reference in the interim that uses this lock; this routine will
- * simply wait for it to be released, then claim it.)
+ * Note: Must call it in process context since it might sleep.
  */
 static void subscr_terminate(struct tipc_subscriber *subscriber)
 {
-        u32 port_ref;
+        tipc_conn_terminate(&topsrv, subscriber->conid);
+}
+
+static void subscr_release(struct tipc_subscriber *subscriber)
+{
         struct tipc_subscription *sub;
         struct tipc_subscription *sub_temp;
 
-        /* Invalidate subscriber reference */
-        port_ref = subscriber->port_ref;
-        subscriber->port_ref = 0;
-        spin_unlock_bh(subscriber->lock);
+        spin_lock_bh(&subscriber->lock);
 
-        /* Sever connection to subscriber */
-        tipc_shutdown(port_ref);
-        tipc_deleteport(port_ref);
+        /* Invalidate subscriber reference */
+        subscriber->conid = 0;
 
         /* Destroy any existing subscriptions for subscriber */
         list_for_each_entry_safe(sub, sub_temp, &subscriber->subscription_list,
                                  subscription_list) {
                 if (sub->timeout != TIPC_WAIT_FOREVER) {
+                        spin_unlock_bh(&subscriber->lock);
                         k_cancel_timer(&sub->timer);
                         k_term_timer(&sub->timer);
+                        spin_lock_bh(&subscriber->lock);
                 }
                 subscr_del(sub);
         }
-
-        /* Remove subscriber from topology server's subscriber list */
-        spin_lock_bh(&topsrv.lock);
-        list_del(&subscriber->subscriber_list);
-        spin_unlock_bh(&topsrv.lock);
-
-        /* Reclaim subscriber lock */
-        spin_lock_bh(subscriber->lock);
+        spin_unlock_bh(&subscriber->lock);
 
         /* Now destroy subscriber */
         kfree(subscriber);
@@ -247,7 +238,7 @@ static void subscr_terminate(struct tipc_subscriber *subscriber)
 /**
  * subscr_cancel - handle subscription cancellation request
  *
- * Called with subscriber port locked.  Routine must temporarily release lock
+ * Called with subscriber lock held. Routine must temporarily release lock
  * to enable the subscription timeout routine to finish without deadlocking;
  * the lock is then reclaimed to allow caller to release it upon return.
  *
@@ -274,10 +265,10 @@ static void subscr_cancel(struct tipc_subscr *s,
         /* Cancel subscription timer (if used), then delete subscription */
         if (sub->timeout != TIPC_WAIT_FOREVER) {
                 sub->timeout = TIPC_WAIT_FOREVER;
-                spin_unlock_bh(subscriber->lock);
+                spin_unlock_bh(&subscriber->lock);
                 k_cancel_timer(&sub->timer);
                 k_term_timer(&sub->timer);
-                spin_lock_bh(subscriber->lock);
+                spin_lock_bh(&subscriber->lock);
         }
         subscr_del(sub);
 }
@@ -285,7 +276,7 @@ static void subscr_cancel(struct tipc_subscr *s,
 /**
  * subscr_subscribe - create subscription for subscriber
  *
- * Called with subscriber port locked.
+ * Called with subscriber lock held.
  */
 static struct tipc_subscription *subscr_subscribe(struct tipc_subscr *s,
                                              struct tipc_subscriber *subscriber)
@@ -304,7 +295,7 @@ static struct tipc_subscription *subscr_subscribe(struct tipc_subscr *s,
         }
 
         /* Refuse subscription if global limit exceeded */
-        if (atomic_read(&topsrv.subscription_count) >= TIPC_MAX_SUBSCRIPTIONS) {
+        if (atomic_read(&subscription_count) >= TIPC_MAX_SUBSCRIPTIONS) {
                 pr_warn("Subscription rejected, limit reached (%u)\n",
                         TIPC_MAX_SUBSCRIPTIONS);
                 subscr_terminate(subscriber);
@@ -335,10 +326,10 @@ static struct tipc_subscription *subscr_subscribe(struct tipc_subscr *s,
         }
         INIT_LIST_HEAD(&sub->nameseq_list);
         list_add(&sub->subscription_list, &subscriber->subscription_list);
-        sub->server_ref = subscriber->port_ref;
+        sub->subscriber = subscriber;
         sub->swap = swap;
         memcpy(&sub->evt.s, s, sizeof(struct tipc_subscr));
-        atomic_inc(&topsrv.subscription_count);
+        atomic_inc(&subscription_count);
         if (sub->timeout != TIPC_WAIT_FOREVER) {
                 k_init_timer(&sub->timer,
                              (Handler)subscr_timeout, (unsigned long)sub);
@@ -348,196 +339,51 @@ static struct tipc_subscription *subscr_subscribe(struct tipc_subscr *s,
         return sub;
 }
 
-/**
- * subscr_conn_shutdown_event - handle termination request from subscriber
- *
- * Called with subscriber's server port unlocked.
- */
-static void subscr_conn_shutdown_event(void *usr_handle,
-                                       u32 port_ref,
-                                       struct sk_buff **buf,
-                                       unsigned char const *data,
-                                       unsigned int size,
-                                       int reason)
+/* Handle one termination request for the subscriber */
+static void subscr_conn_shutdown_event(int conid, void *usr_data)
 {
-        struct tipc_subscriber *subscriber = usr_handle;
-        spinlock_t *subscriber_lock;
-
-        if (tipc_port_lock(port_ref) == NULL)
-                return;
-
-        subscriber_lock = subscriber->lock;
-        subscr_terminate(subscriber);
-        spin_unlock_bh(subscriber_lock);
+        subscr_release((struct tipc_subscriber *)usr_data);
 }
 
-/**
- * subscr_conn_msg_event - handle new subscription request from subscriber
- *
- * Called with subscriber's server port unlocked.
- */
-static void subscr_conn_msg_event(void *usr_handle,
-                                  u32 port_ref,
-                                  struct sk_buff **buf,
-                                  const unchar *data,
-                                  u32 size)
+/* Handle one request to create a new subscription for the subscriber */
+static void subscr_conn_msg_event(int conid, struct sockaddr_tipc *addr,
+                                  void *usr_data, void *buf, size_t len)
 {
-        struct tipc_subscriber *subscriber = usr_handle;
-        spinlock_t *subscriber_lock;
+        struct tipc_subscriber *subscriber = usr_data;
         struct tipc_subscription *sub;
 
-        /*
-         * Lock subscriber's server port (& make a local copy of lock pointer,
-         * in case subscriber is deleted while processing subscription request)
-         */
-        if (tipc_port_lock(port_ref) == NULL)
-                return;
-
-        subscriber_lock = subscriber->lock;
-
-        if (size != sizeof(struct tipc_subscr)) {
-                subscr_terminate(subscriber);
-                spin_unlock_bh(subscriber_lock);
-        } else {
-                sub = subscr_subscribe((struct tipc_subscr *)data, subscriber);
-                spin_unlock_bh(subscriber_lock);
-                if (sub != NULL) {
-
-                        /*
-                         * We must release the server port lock before adding a
-                         * subscription to the name table since TIPC needs to be
-                         * able to (re)acquire the port lock if an event message
-                         * issued by the subscription process is rejected and
-                         * returned.  The subscription cannot be deleted while
-                         * it is being added to the name table because:
-                         * a) the single-threading of the native API port code
-                         *    ensures the subscription cannot be cancelled and
-                         *    the subscriber connection cannot be broken, and
-                         * b) the name table lock ensures the subscription
-                         *    timeout code cannot delete the subscription,
-                         * so the subscription object is still protected.
-                         */
-                        tipc_nametbl_subscribe(sub);
-                }
-        }
+        spin_lock_bh(&subscriber->lock);
+        sub = subscr_subscribe((struct tipc_subscr *)buf, subscriber);
+        if (sub)
+                tipc_nametbl_subscribe(sub);
+        spin_unlock_bh(&subscriber->lock);
 }
 
-/**
- * subscr_named_msg_event - handle request to establish a new subscriber
- */
-static void subscr_named_msg_event(void *usr_handle,
-                                   u32 port_ref,
-                                   struct sk_buff **buf,
-                                   const unchar *data,
-                                   u32 size,
-                                   u32 importance,
-                                   struct tipc_portid const *orig,
-                                   struct tipc_name_seq const *dest)
+
+/* Handle one request to establish a new subscriber */
+static void *subscr_named_msg_event(int conid)
 {
         struct tipc_subscriber *subscriber;
-        u32 server_port_ref;
 
         /* Create subscriber object */
         subscriber = kzalloc(sizeof(struct tipc_subscriber), GFP_ATOMIC);
         if (subscriber == NULL) {
                 pr_warn("Subscriber rejected, no memory\n");
-                return;
+                return NULL;
         }
         INIT_LIST_HEAD(&subscriber->subscription_list);
-        INIT_LIST_HEAD(&subscriber->subscriber_list);
-
-        /* Create server port & establish connection to subscriber */
-        tipc_createport(subscriber,
-                        importance,
-                        NULL,
-                        NULL,
-                        subscr_conn_shutdown_event,
-                        NULL,
-                        NULL,
-                        subscr_conn_msg_event,
-                        NULL,
-                        &subscriber->port_ref);
-        if (subscriber->port_ref == 0) {
-                pr_warn("Subscriber rejected, unable to create port\n");
-                kfree(subscriber);
-                return;
-        }
-        tipc_connect(subscriber->port_ref, orig);
-
-        /* Lock server port (& save lock address for future use) */
-        subscriber->lock = tipc_port_lock(subscriber->port_ref)->lock;
-
-        /* Add subscriber to topology server's subscriber list */
-        spin_lock_bh(&topsrv.lock);
-        list_add(&subscriber->subscriber_list, &topsrv.subscriber_list);
-        spin_unlock_bh(&topsrv.lock);
-
-        /* Unlock server port */
-        server_port_ref = subscriber->port_ref;
-        spin_unlock_bh(subscriber->lock);
-
-        /* Send an ACK- to complete connection handshaking */
-        tipc_send(server_port_ref, 0, NULL, 0);
+        subscriber->conid = conid;
+        spin_lock_init(&subscriber->lock);
 
-        /* Handle optional subscription request */
-        if (size != 0) {
-                subscr_conn_msg_event(subscriber, server_port_ref,
-                                      buf, data, size);
-        }
+        return (void *)subscriber;
 }
 
 int tipc_subscr_start(void)
 {
-        struct tipc_name_seq seq = {TIPC_TOP_SRV, TIPC_TOP_SRV, TIPC_TOP_SRV};
-        int res;
-
-        spin_lock_init(&topsrv.lock);
-        INIT_LIST_HEAD(&topsrv.subscriber_list);
-
-        res = tipc_createport(NULL,
-                              TIPC_CRITICAL_IMPORTANCE,
-                              NULL,
-                              NULL,
-                              NULL,
-                              NULL,
-                              subscr_named_msg_event,
-                              NULL,
-                              NULL,
-                              &topsrv.setup_port);
-        if (res)
-                goto failed;
-
-        res = tipc_publish(topsrv.setup_port, TIPC_NODE_SCOPE, &seq);
-        if (res) {
-                tipc_deleteport(topsrv.setup_port);
-                topsrv.setup_port = 0;
-                goto failed;
-        }
-
-        return 0;
-
-failed:
-        pr_err("Failed to create subscription service\n");
-        return res;
+        return tipc_server_start(&topsrv);
 }
 
 void tipc_subscr_stop(void)
 {
-        struct tipc_subscriber *subscriber;
-        struct tipc_subscriber *subscriber_temp;
-        spinlock_t *subscriber_lock;
-
-        if (topsrv.setup_port) {
-                tipc_deleteport(topsrv.setup_port);
-                topsrv.setup_port = 0;
-
-                list_for_each_entry_safe(subscriber, subscriber_temp,
-                                         &topsrv.subscriber_list,
-                                         subscriber_list) {
-                        subscriber_lock = subscriber->lock;
-                        spin_lock_bh(subscriber_lock);
-                        subscr_terminate(subscriber);
-                        spin_unlock_bh(subscriber_lock);
-                }
-        }
+        tipc_server_stop(&topsrv);
 }
diff --git a/net/tipc/subscr.h b/net/tipc/subscr.h
index 218d2e07f0cc..393e417bee3f 100644
--- a/net/tipc/subscr.h
+++ b/net/tipc/subscr.h
@@ -2,7 +2,7 @@
  * net/tipc/subscr.h: Include file for TIPC network topology service
  *
  * Copyright (c) 2003-2006, Ericsson AB
- * Copyright (c) 2005-2007, Wind River Systems
+ * Copyright (c) 2005-2007, 2012-2013, Wind River Systems
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
@@ -37,10 +37,14 @@
 #ifndef _TIPC_SUBSCR_H
 #define _TIPC_SUBSCR_H
 
+#include "server.h"
+
 struct tipc_subscription;
+struct tipc_subscriber;
 
 /**
  * struct tipc_subscription - TIPC network topology subscription object
+ * @subscriber: pointer to its subscriber
  * @seq: name sequence associated with subscription
  * @timeout: duration of subscription (in ms)
  * @filter: event filtering to be done for subscription
@@ -52,28 +56,23 @@ struct tipc_subscription;
  * @evt: template for events generated by subscription
  */
 struct tipc_subscription {
+        struct tipc_subscriber *subscriber;
         struct tipc_name_seq seq;
         u32 timeout;
         u32 filter;
         struct timer_list timer;
         struct list_head nameseq_list;
         struct list_head subscription_list;
-        u32 server_ref;
         int swap;
         struct tipc_event evt;
 };
 
-int tipc_subscr_overlap(struct tipc_subscription *sub,
-                        u32 found_lower,
+int tipc_subscr_overlap(struct tipc_subscription *sub, u32 found_lower,
                         u32 found_upper);
 
-void tipc_subscr_report_overlap(struct tipc_subscription *sub,
-                                u32 found_lower,
-                                u32 found_upper,
-                                u32 event,
-                                u32 port_ref,
-                                u32 node,
-                                int must_report);
+void tipc_subscr_report_overlap(struct tipc_subscription *sub, u32 found_lower,
+                                u32 found_upper, u32 event, u32 port_ref,
+                                u32 node, int must);
 
 int tipc_subscr_start(void);
 
diff --git a/net/tipc/sysctl.c b/net/tipc/sysctl.c
new file mode 100644
index 000000000000..f3fef93325a8
--- /dev/null
+++ b/net/tipc/sysctl.c
@@ -0,0 +1,64 @@
+/*
+ * net/tipc/sysctl.c: sysctl interface to TIPC subsystem
+ *
+ * Copyright (c) 2013, Wind River Systems
+ * 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 names of the copyright holders nor the names of its
+ *    contributors may be used to endorse or promote products derived from
+ *    this software without specific prior written permission.
+ *
+ * Alternatively, this software may be distributed under the terms of the
+ * GNU General Public License ("GPL") version 2 as published by the Free
+ * Software Foundation.
+ *
+ * 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 "core.h"
+
+#include <linux/sysctl.h>
+
+static struct ctl_table_header *tipc_ctl_hdr;
+
+static struct ctl_table tipc_table[] = {
+        {
+                .procname       = "tipc_rmem",
+                .data           = &sysctl_tipc_rmem,
+                .maxlen         = sizeof(sysctl_tipc_rmem),
+                .mode           = 0644,
+                .proc_handler   = proc_dointvec,
+        },
+        {}
+};
+
+int tipc_register_sysctl(void)
+{
+        tipc_ctl_hdr = register_net_sysctl(&init_net, "net/tipc", tipc_table);
+        if (tipc_ctl_hdr == NULL)
+                return -ENOMEM;
+        return 0;
+}
+
+void tipc_unregister_sysctl(void)
+{
+        unregister_net_sysctl_table(tipc_ctl_hdr);
+}
diff --git a/net/unix/af_unix.c b/net/unix/af_unix.c
index 826e09938bff..c4ce243824bb 100644
--- a/net/unix/af_unix.c
+++ b/net/unix/af_unix.c
@@ -114,6 +114,7 @@
 #include <linux/mount.h>
 #include <net/checksum.h>
 #include <linux/security.h>
+#include <linux/freezer.h>
 
 struct hlist_head unix_socket_table[2 * UNIX_HASH_SIZE];
 EXPORT_SYMBOL_GPL(unix_socket_table);
@@ -1879,7 +1880,7 @@ static long unix_stream_data_wait(struct sock *sk, long timeo,
 
                 set_bit(SOCK_ASYNC_WAITDATA, &sk->sk_socket->flags);
                 unix_state_unlock(sk);
-                timeo = schedule_timeout(timeo);
+                timeo = freezable_schedule_timeout(timeo);
                 unix_state_lock(sk);
                 clear_bit(SOCK_ASYNC_WAITDATA, &sk->sk_socket->flags);
         }
diff --git a/net/unix/sysctl_net_unix.c b/net/unix/sysctl_net_unix.c
index 8800604c93f4..b3d515021b74 100644
--- a/net/unix/sysctl_net_unix.c
+++ b/net/unix/sysctl_net_unix.c
@@ -15,7 +15,7 @@
 
 #include <net/af_unix.h>
 
-static ctl_table unix_table[] = {
+static struct ctl_table unix_table[] = {
         {
                 .procname       = "max_dgram_qlen",
                 .data           = &init_net.unx.sysctl_max_dgram_qlen,
diff --git a/net/vmw_vsock/af_vsock.c b/net/vmw_vsock/af_vsock.c
index 3f77f42a3b58..593071dabd1c 100644
--- a/net/vmw_vsock/af_vsock.c
+++ b/net/vmw_vsock/af_vsock.c
@@ -144,18 +144,18 @@ EXPORT_SYMBOL_GPL(vm_sockets_get_local_cid);
  * VSOCK_HASH_SIZE + 1 so that vsock_bind_table[0] through
  * vsock_bind_table[VSOCK_HASH_SIZE - 1] are for bound sockets and
  * vsock_bind_table[VSOCK_HASH_SIZE] is for unbound sockets.  The hash function
- * mods with VSOCK_HASH_SIZE - 1 to ensure this.
+ * mods with VSOCK_HASH_SIZE to ensure this.
  */
 #define VSOCK_HASH_SIZE         251
 #define MAX_PORT_RETRIES        24
 
-#define VSOCK_HASH(addr)        ((addr)->svm_port % (VSOCK_HASH_SIZE - 1))
+#define VSOCK_HASH(addr)        ((addr)->svm_port % VSOCK_HASH_SIZE)
 #define vsock_bound_sockets(addr) (&vsock_bind_table[VSOCK_HASH(addr)])
 #define vsock_unbound_sockets     (&vsock_bind_table[VSOCK_HASH_SIZE])
 
 /* XXX This can probably be implemented in a better way. */
 #define VSOCK_CONN_HASH(src, dst)                               \
-        (((src)->svm_cid ^ (dst)->svm_port) % (VSOCK_HASH_SIZE - 1))
+        (((src)->svm_cid ^ (dst)->svm_port) % VSOCK_HASH_SIZE)
 #define vsock_connected_sockets(src, dst)               \
         (&vsock_connected_table[VSOCK_CONN_HASH(src, dst)])
 #define vsock_connected_sockets_vsk(vsk)                                \
@@ -165,6 +165,18 @@ static struct list_head vsock_bind_table[VSOCK_HASH_SIZE + 1];
 static struct list_head vsock_connected_table[VSOCK_HASH_SIZE];
 static DEFINE_SPINLOCK(vsock_table_lock);
 
+/* Autobind this socket to the local address if necessary. */
+static int vsock_auto_bind(struct vsock_sock *vsk)
+{
+        struct sock *sk = sk_vsock(vsk);
+        struct sockaddr_vm local_addr;
+
+        if (vsock_addr_bound(&vsk->local_addr))
+                return 0;
+        vsock_addr_init(&local_addr, VMADDR_CID_ANY, VMADDR_PORT_ANY);
+        return __vsock_bind(sk, &local_addr);
+}
+
 static void vsock_init_tables(void)
 {
         int i;
@@ -956,15 +968,10 @@ static int vsock_dgram_sendmsg(struct kiocb *kiocb, struct socket *sock,
 
         lock_sock(sk);
 
-        if (!vsock_addr_bound(&vsk->local_addr)) {
-                struct sockaddr_vm local_addr;
-
-                vsock_addr_init(&local_addr, VMADDR_CID_ANY, VMADDR_PORT_ANY);
-                err = __vsock_bind(sk, &local_addr);
-                if (err != 0)
-                        goto out;
+        err = vsock_auto_bind(vsk);
+        if (err)
+                goto out;
 
-        }
 
         /* If the provided message contains an address, use that.  Otherwise
          * fall back on the socket's remote handle (if it has been connected).
@@ -1038,15 +1045,9 @@ static int vsock_dgram_connect(struct socket *sock,
 
         lock_sock(sk);
 
-        if (!vsock_addr_bound(&vsk->local_addr)) {
-                struct sockaddr_vm local_addr;
-
-                vsock_addr_init(&local_addr, VMADDR_CID_ANY, VMADDR_PORT_ANY);
-                err = __vsock_bind(sk, &local_addr);
-                if (err != 0)
-                        goto out;
-
-        }
+        err = vsock_auto_bind(vsk);
+        if (err)
+                goto out;
 
         if (!transport->dgram_allow(remote_addr->svm_cid,
                                     remote_addr->svm_port)) {
@@ -1163,17 +1164,9 @@ static int vsock_stream_connect(struct socket *sock, struct sockaddr *addr,
                 memcpy(&vsk->remote_addr, remote_addr,
                        sizeof(vsk->remote_addr));
 
-                /* Autobind this socket to the local address if necessary. */
-                if (!vsock_addr_bound(&vsk->local_addr)) {
-                        struct sockaddr_vm local_addr;
-
-                        vsock_addr_init(&local_addr, VMADDR_CID_ANY,
-                                        VMADDR_PORT_ANY);
-                        err = __vsock_bind(sk, &local_addr);
-                        if (err != 0)
-                                goto out;
-
-                }
+                err = vsock_auto_bind(vsk);
+                if (err)
+                        goto out;
 
                 sk->sk_state = SS_CONNECTING;
 
diff --git a/net/vmw_vsock/vmci_transport.c b/net/vmw_vsock/vmci_transport.c
index daff75200e25..ffc11df02af2 100644
--- a/net/vmw_vsock/vmci_transport.c
+++ b/net/vmw_vsock/vmci_transport.c
@@ -625,13 +625,14 @@ static int vmci_transport_recv_dgram_cb(void *data, struct vmci_datagram *dg)
 
         /* Attach the packet to the socket's receive queue as an sk_buff. */
         skb = alloc_skb(size, GFP_ATOMIC);
-        if (skb) {
-                /* sk_receive_skb() will do a sock_put(), so hold here. */
-                sock_hold(sk);
-                skb_put(skb, size);
-                memcpy(skb->data, dg, size);
-                sk_receive_skb(sk, skb, 0);
-        }
+        if (!skb)
+                return VMCI_ERROR_NO_MEM;
+
+        /* sk_receive_skb() will do a sock_put(), so hold here. */
+        sock_hold(sk);
+        skb_put(skb, size);
+        memcpy(skb->data, dg, size);
+        sk_receive_skb(sk, skb, 0);
 
         return VMCI_SUCCESS;
 }
@@ -939,10 +940,9 @@ static void vmci_transport_recv_pkt_work(struct work_struct *work)
                  * reset to prevent that.
                  */
                 vmci_transport_send_reset(sk, pkt);
-                goto out;
+                break;
         }
 
-out:
         release_sock(sk);
         kfree(recv_pkt_info);
         /* Release reference obtained in the stream callback when we fetched
diff --git a/net/wireless/chan.c b/net/wireless/chan.c
index fd556ac05fdb..50f6195c8b70 100644
--- a/net/wireless/chan.c
+++ b/net/wireless/chan.c
@@ -54,6 +54,8 @@ bool cfg80211_chandef_valid(const struct cfg80211_chan_def *chandef)
         control_freq = chandef->chan->center_freq;
 
         switch (chandef->width) {
+        case NL80211_CHAN_WIDTH_5:
+        case NL80211_CHAN_WIDTH_10:
         case NL80211_CHAN_WIDTH_20:
         case NL80211_CHAN_WIDTH_20_NOHT:
                 if (chandef->center_freq1 != control_freq)
@@ -152,6 +154,12 @@ static int cfg80211_chandef_get_width(const struct cfg80211_chan_def *c)
         int width;
 
         switch (c->width) {
+        case NL80211_CHAN_WIDTH_5:
+                width = 5;
+                break;
+        case NL80211_CHAN_WIDTH_10:
+                width = 10;
+                break;
         case NL80211_CHAN_WIDTH_20:
         case NL80211_CHAN_WIDTH_20_NOHT:
                 width = 20;
@@ -194,6 +202,16 @@ cfg80211_chandef_compatible(const struct cfg80211_chan_def *c1,
         if (c1->width == c2->width)
                 return NULL;
 
+        /*
+         * can't be compatible if one of them is 5 or 10 MHz,
+         * but they don't have the same width.
+         */
+        if (c1->width == NL80211_CHAN_WIDTH_5 ||
+            c1->width == NL80211_CHAN_WIDTH_10 ||
+            c2->width == NL80211_CHAN_WIDTH_5 ||
+            c2->width == NL80211_CHAN_WIDTH_10)
+                return NULL;
+
         if (c1->width == NL80211_CHAN_WIDTH_20_NOHT ||
             c1->width == NL80211_CHAN_WIDTH_20)
                 return c2;
@@ -264,11 +282,17 @@ static int cfg80211_get_chans_dfs_required(struct wiphy *wiphy,
                                             u32 bandwidth)
 {
         struct ieee80211_channel *c;
-        u32 freq;
+        u32 freq, start_freq, end_freq;
+
+        if (bandwidth <= 20) {
+                start_freq = center_freq;
+                end_freq = center_freq;
+        } else {
+                start_freq = center_freq - bandwidth/2 + 10;
+                end_freq = center_freq + bandwidth/2 - 10;
+        }
 
-        for (freq = center_freq - bandwidth/2 + 10;
-             freq <= center_freq + bandwidth/2 - 10;
-             freq += 20) {
+        for (freq = start_freq; freq <= end_freq; freq += 20) {
                 c = ieee80211_get_channel(wiphy, freq);
                 if (!c)
                         return -EINVAL;
@@ -310,11 +334,17 @@ static bool cfg80211_secondary_chans_ok(struct wiphy *wiphy,
                                         u32 prohibited_flags)
 {
         struct ieee80211_channel *c;
-        u32 freq;
+        u32 freq, start_freq, end_freq;
+
+        if (bandwidth <= 20) {
+                start_freq = center_freq;
+                end_freq = center_freq;
+        } else {
+                start_freq = center_freq - bandwidth/2 + 10;
+                end_freq = center_freq + bandwidth/2 - 10;
+        }
 
-        for (freq = center_freq - bandwidth/2 + 10;
-             freq <= center_freq + bandwidth/2 - 10;
-             freq += 20) {
+        for (freq = start_freq; freq <= end_freq; freq += 20) {
                 c = ieee80211_get_channel(wiphy, freq);
                 if (!c)
                         return false;
@@ -349,6 +379,12 @@ bool cfg80211_chandef_usable(struct wiphy *wiphy,
         control_freq = chandef->chan->center_freq;
 
         switch (chandef->width) {
+        case NL80211_CHAN_WIDTH_5:
+                width = 5;
+                break;
+        case NL80211_CHAN_WIDTH_10:
+                width = 10;
+                break;
         case NL80211_CHAN_WIDTH_20:
                 if (!ht_cap->ht_supported)
                         return false;
@@ -405,6 +441,11 @@ bool cfg80211_chandef_usable(struct wiphy *wiphy,
         if (width > 20)
                 prohibited_flags |= IEEE80211_CHAN_NO_OFDM;
 
+        /* 5 and 10 MHz are only defined for the OFDM PHY */
+        if (width < 20)
+                prohibited_flags |= IEEE80211_CHAN_NO_OFDM;
+
+
         if (!cfg80211_secondary_chans_ok(wiphy, chandef->center_freq1,
                                          width, prohibited_flags))
                 return false;
diff --git a/net/wireless/core.c b/net/wireless/core.c
index 73405e00c800..4f9f216665e9 100644
--- a/net/wireless/core.c
+++ b/net/wireless/core.c
@@ -34,13 +34,12 @@
 MODULE_AUTHOR("Johannes Berg");
 MODULE_LICENSE("GPL");
 MODULE_DESCRIPTION("wireless configuration support");
+MODULE_ALIAS_GENL_FAMILY(NL80211_GENL_NAME);
 
-/* RCU-protected (and cfg80211_mutex for writers) */
+/* RCU-protected (and RTNL for writers) */
 LIST_HEAD(cfg80211_rdev_list);
 int cfg80211_rdev_list_generation;
 
-DEFINE_MUTEX(cfg80211_mutex);
-
 /* for debugfs */
 static struct dentry *ieee80211_debugfs_dir;
 
@@ -52,12 +51,11 @@ module_param(cfg80211_disable_40mhz_24ghz, bool, 0644);
 MODULE_PARM_DESC(cfg80211_disable_40mhz_24ghz,
                  "Disable 40MHz support in the 2.4GHz band");
 
-/* requires cfg80211_mutex to be held! */
 struct cfg80211_registered_device *cfg80211_rdev_by_wiphy_idx(int wiphy_idx)
 {
         struct cfg80211_registered_device *result = NULL, *rdev;
 
-        assert_cfg80211_lock();
+        ASSERT_RTNL();
 
         list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
                 if (rdev->wiphy_idx == wiphy_idx) {
@@ -76,12 +74,11 @@ int get_wiphy_idx(struct wiphy *wiphy)
         return rdev->wiphy_idx;
 }
 
-/* requires cfg80211_rdev_mutex to be held! */
 struct wiphy *wiphy_idx_to_wiphy(int wiphy_idx)
 {
         struct cfg80211_registered_device *rdev;
 
-        assert_cfg80211_lock();
+        ASSERT_RTNL();
 
         rdev = cfg80211_rdev_by_wiphy_idx(wiphy_idx);
         if (!rdev)
@@ -89,35 +86,13 @@ struct wiphy *wiphy_idx_to_wiphy(int wiphy_idx)
         return &rdev->wiphy;
 }
 
-struct cfg80211_registered_device *
-cfg80211_get_dev_from_ifindex(struct net *net, int ifindex)
-{
-        struct cfg80211_registered_device *rdev = ERR_PTR(-ENODEV);
-        struct net_device *dev;
-
-        mutex_lock(&cfg80211_mutex);
-        dev = dev_get_by_index(net, ifindex);
-        if (!dev)
-                goto out;
-        if (dev->ieee80211_ptr) {
-                rdev = wiphy_to_dev(dev->ieee80211_ptr->wiphy);
-                mutex_lock(&rdev->mtx);
-        } else
-                rdev = ERR_PTR(-ENODEV);
-        dev_put(dev);
- out:
-        mutex_unlock(&cfg80211_mutex);
-        return rdev;
-}
-
-/* requires cfg80211_mutex to be held */
 int cfg80211_dev_rename(struct cfg80211_registered_device *rdev,
                         char *newname)
 {
         struct cfg80211_registered_device *rdev2;
         int wiphy_idx, taken = -1, result, digits;
 
-        assert_cfg80211_lock();
+        ASSERT_RTNL();
 
         /* prohibit calling the thing phy%d when %d is not its number */
         sscanf(newname, PHY_NAME "%d%n", &wiphy_idx, &taken);
@@ -215,8 +190,7 @@ static void cfg80211_rfkill_poll(struct rfkill *rfkill, void *data)
 void cfg80211_stop_p2p_device(struct cfg80211_registered_device *rdev,
                               struct wireless_dev *wdev)
 {
-        lockdep_assert_held(&rdev->devlist_mtx);
-        lockdep_assert_held(&rdev->sched_scan_mtx);
+        ASSERT_RTNL();
 
         if (WARN_ON(wdev->iftype != NL80211_IFTYPE_P2P_DEVICE))
                 return;
@@ -230,18 +204,15 @@ void cfg80211_stop_p2p_device(struct cfg80211_registered_device *rdev,
         rdev->opencount--;
 
         if (rdev->scan_req && rdev->scan_req->wdev == wdev) {
-                bool busy = work_busy(&rdev->scan_done_wk);
-
                 /*
-                 * If the work isn't pending or running (in which case it would
-                 * be waiting for the lock we hold) the driver didn't properly
-                 * cancel the scan when the interface was removed. In this case
-                 * warn and leak the scan request object to not crash later.
+                 * If the scan request wasn't notified as done, set it
+                 * to aborted and leak it after a warning. The driver
+                 * should have notified us that it ended at the latest
+                 * during rdev_stop_p2p_device().
                  */
-                WARN_ON(!busy);
-
-                rdev->scan_req->aborted = true;
-                ___cfg80211_scan_done(rdev, !busy);
+                if (WARN_ON(!rdev->scan_req->notified))
+                        rdev->scan_req->aborted = true;
+                ___cfg80211_scan_done(rdev, !rdev->scan_req->notified);
         }
 }
 
@@ -255,8 +226,6 @@ static int cfg80211_rfkill_set_block(void *data, bool blocked)
 
         rtnl_lock();
 
-        /* read-only iteration need not hold the devlist_mtx */
-
         list_for_each_entry(wdev, &rdev->wdev_list, list) {
                 if (wdev->netdev) {
                         dev_close(wdev->netdev);
@@ -265,12 +234,7 @@ static int cfg80211_rfkill_set_block(void *data, bool blocked)
                 /* otherwise, check iftype */
                 switch (wdev->iftype) {
                 case NL80211_IFTYPE_P2P_DEVICE:
-                        /* but this requires it */
-                        mutex_lock(&rdev->devlist_mtx);
-                        mutex_lock(&rdev->sched_scan_mtx);
                         cfg80211_stop_p2p_device(rdev, wdev);
-                        mutex_unlock(&rdev->sched_scan_mtx);
-                        mutex_unlock(&rdev->devlist_mtx);
                         break;
                 default:
                         break;
@@ -298,10 +262,7 @@ static void cfg80211_event_work(struct work_struct *work)
                             event_work);
 
         rtnl_lock();
-        cfg80211_lock_rdev(rdev);
-
         cfg80211_process_rdev_events(rdev);
-        cfg80211_unlock_rdev(rdev);
         rtnl_unlock();
 }
 
@@ -309,7 +270,7 @@ static void cfg80211_event_work(struct work_struct *work)
 
 struct wiphy *wiphy_new(const struct cfg80211_ops *ops, int sizeof_priv)
 {
-        static int wiphy_counter;
+        static atomic_t wiphy_counter = ATOMIC_INIT(0);
 
         struct cfg80211_registered_device *rdev;
         int alloc_size;
@@ -331,26 +292,21 @@ struct wiphy *wiphy_new(const struct cfg80211_ops *ops, int sizeof_priv)
 
         rdev->ops = ops;
 
-        mutex_lock(&cfg80211_mutex);
-
-        rdev->wiphy_idx = wiphy_counter++;
+        rdev->wiphy_idx = atomic_inc_return(&wiphy_counter);
 
         if (unlikely(rdev->wiphy_idx < 0)) {
-                wiphy_counter--;
-                mutex_unlock(&cfg80211_mutex);
                 /* ugh, wrapped! */
+                atomic_dec(&wiphy_counter);
                 kfree(rdev);
                 return NULL;
         }
 
-        mutex_unlock(&cfg80211_mutex);
+        /* atomic_inc_return makes it start at 1, make it start at 0 */
+        rdev->wiphy_idx--;
 
         /* give it a proper name */
         dev_set_name(&rdev->wiphy.dev, PHY_NAME "%d", rdev->wiphy_idx);
 
-        mutex_init(&rdev->mtx);
-        mutex_init(&rdev->devlist_mtx);
-        mutex_init(&rdev->sched_scan_mtx);
         INIT_LIST_HEAD(&rdev->wdev_list);
         INIT_LIST_HEAD(&rdev->beacon_registrations);
         spin_lock_init(&rdev->beacon_registrations_lock);
@@ -496,8 +452,13 @@ int wiphy_register(struct wiphy *wiphy)
         u16 ifmodes = wiphy->interface_modes;
 
 #ifdef CONFIG_PM
-        if (WARN_ON((wiphy->wowlan.flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE) &&
-                    !(wiphy->wowlan.flags & WIPHY_WOWLAN_SUPPORTS_GTK_REKEY)))
+        if (WARN_ON(wiphy->wowlan &&
+                    (wiphy->wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE) &&
+                    !(wiphy->wowlan->flags & WIPHY_WOWLAN_SUPPORTS_GTK_REKEY)))
+                return -EINVAL;
+        if (WARN_ON(wiphy->wowlan &&
+                    !wiphy->wowlan->flags && !wiphy->wowlan->n_patterns &&
+                    !wiphy->wowlan->tcp))
                 return -EINVAL;
 #endif
 
@@ -587,25 +548,28 @@ int wiphy_register(struct wiphy *wiphy)
         }
 
 #ifdef CONFIG_PM
-        if (rdev->wiphy.wowlan.n_patterns) {
-                if (WARN_ON(!rdev->wiphy.wowlan.pattern_min_len ||
-                            rdev->wiphy.wowlan.pattern_min_len >
-                            rdev->wiphy.wowlan.pattern_max_len))
-                        return -EINVAL;
-        }
+        if (WARN_ON(rdev->wiphy.wowlan && rdev->wiphy.wowlan->n_patterns &&
+                    (!rdev->wiphy.wowlan->pattern_min_len ||
+                     rdev->wiphy.wowlan->pattern_min_len >
+                                rdev->wiphy.wowlan->pattern_max_len)))
+                return -EINVAL;
 #endif
 
         /* check and set up bitrates */
         ieee80211_set_bitrate_flags(wiphy);
 
-        mutex_lock(&cfg80211_mutex);
 
         res = device_add(&rdev->wiphy.dev);
+        if (res)
+                return res;
+
+        res = rfkill_register(rdev->rfkill);
         if (res) {
-                mutex_unlock(&cfg80211_mutex);
+                device_del(&rdev->wiphy.dev);
                 return res;
         }
 
+        rtnl_lock();
         /* set up regulatory info */
         wiphy_regulatory_register(wiphy);
 
@@ -631,25 +595,7 @@ int wiphy_register(struct wiphy *wiphy)
         }
 
         cfg80211_debugfs_rdev_add(rdev);
-        mutex_unlock(&cfg80211_mutex);
-
-        /*
-         * due to a locking dependency this has to be outside of the
-         * cfg80211_mutex lock
-         */
-        res = rfkill_register(rdev->rfkill);
-        if (res) {
-                device_del(&rdev->wiphy.dev);
-
-                mutex_lock(&cfg80211_mutex);
-                debugfs_remove_recursive(rdev->wiphy.debugfsdir);
-                list_del_rcu(&rdev->list);
-                wiphy_regulatory_deregister(wiphy);
-                mutex_unlock(&cfg80211_mutex);
-                return res;
-        }
 
-        rtnl_lock();
         rdev->wiphy.registered = true;
         rtnl_unlock();
         return 0;
@@ -679,25 +625,19 @@ void wiphy_unregister(struct wiphy *wiphy)
 {
         struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
 
-        rtnl_lock();
-        rdev->wiphy.registered = false;
-        rtnl_unlock();
-
-        rfkill_unregister(rdev->rfkill);
-
-        /* protect the device list */
-        mutex_lock(&cfg80211_mutex);
-
         wait_event(rdev->dev_wait, ({
                 int __count;
-                mutex_lock(&rdev->devlist_mtx);
+                rtnl_lock();
                 __count = rdev->opencount;
-                mutex_unlock(&rdev->devlist_mtx);
+                rtnl_unlock();
                 __count == 0; }));
 
-        mutex_lock(&rdev->devlist_mtx);
+        rfkill_unregister(rdev->rfkill);
+
+        rtnl_lock();
+        rdev->wiphy.registered = false;
+
         BUG_ON(!list_empty(&rdev->wdev_list));
-        mutex_unlock(&rdev->devlist_mtx);
 
         /*
          * First remove the hardware from everywhere, this makes
@@ -708,20 +648,6 @@ void wiphy_unregister(struct wiphy *wiphy)
         synchronize_rcu();
 
         /*
-         * Try to grab rdev->mtx. If a command is still in progress,
-         * hopefully the driver will refuse it since it's tearing
-         * down the device already. We wait for this command to complete
-         * before unlinking the item from the list.
-         * Note: as codified by the BUG_ON above we cannot get here if
-         * a virtual interface is still present. Hence, we can only get
-         * to lock contention here if userspace issues a command that
-         * identified the hardware by wiphy index.
-         */
-        cfg80211_lock_rdev(rdev);
-        /* nothing */
-        cfg80211_unlock_rdev(rdev);
-
-        /*
          * If this device got a regulatory hint tell core its
          * free to listen now to a new shiny device regulatory hint
          */
@@ -730,15 +656,17 @@ void wiphy_unregister(struct wiphy *wiphy)
         cfg80211_rdev_list_generation++;
         device_del(&rdev->wiphy.dev);
 
-        mutex_unlock(&cfg80211_mutex);
+        rtnl_unlock();
 
         flush_work(&rdev->scan_done_wk);
         cancel_work_sync(&rdev->conn_work);
         flush_work(&rdev->event_work);
         cancel_delayed_work_sync(&rdev->dfs_update_channels_wk);
 
-        if (rdev->wowlan && rdev->ops->set_wakeup)
+#ifdef CONFIG_PM
+        if (rdev->wiphy.wowlan_config && rdev->ops->set_wakeup)
                 rdev_set_wakeup(rdev, false);
+#endif
         cfg80211_rdev_free_wowlan(rdev);
 }
 EXPORT_SYMBOL(wiphy_unregister);
@@ -748,9 +676,6 @@ void cfg80211_dev_free(struct cfg80211_registered_device *rdev)
         struct cfg80211_internal_bss *scan, *tmp;
         struct cfg80211_beacon_registration *reg, *treg;
         rfkill_destroy(rdev->rfkill);
-        mutex_destroy(&rdev->mtx);
-        mutex_destroy(&rdev->devlist_mtx);
-        mutex_destroy(&rdev->sched_scan_mtx);
         list_for_each_entry_safe(reg, treg, &rdev->beacon_registrations, list) {
                 list_del(&reg->list);
                 kfree(reg);
@@ -775,36 +700,6 @@ void wiphy_rfkill_set_hw_state(struct wiphy *wiphy, bool blocked)
 }
 EXPORT_SYMBOL(wiphy_rfkill_set_hw_state);
 
-static void wdev_cleanup_work(struct work_struct *work)
-{
-        struct wireless_dev *wdev;
-        struct cfg80211_registered_device *rdev;
-
-        wdev = container_of(work, struct wireless_dev, cleanup_work);
-        rdev = wiphy_to_dev(wdev->wiphy);
-
-        mutex_lock(&rdev->sched_scan_mtx);
-
-        if (WARN_ON(rdev->scan_req && rdev->scan_req->wdev == wdev)) {
-                rdev->scan_req->aborted = true;
-                ___cfg80211_scan_done(rdev, true);
-        }
-
-        if (WARN_ON(rdev->sched_scan_req &&
-                    rdev->sched_scan_req->dev == wdev->netdev)) {
-                __cfg80211_stop_sched_scan(rdev, false);
-        }
-
-        mutex_unlock(&rdev->sched_scan_mtx);
-
-        mutex_lock(&rdev->devlist_mtx);
-        rdev->opencount--;
-        mutex_unlock(&rdev->devlist_mtx);
-        wake_up(&rdev->dev_wait);
-
-        dev_put(wdev->netdev);
-}
-
 void cfg80211_unregister_wdev(struct wireless_dev *wdev)
 {
         struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
@@ -814,8 +709,6 @@ void cfg80211_unregister_wdev(struct wireless_dev *wdev)
         if (WARN_ON(wdev->netdev))
                 return;
 
-        mutex_lock(&rdev->devlist_mtx);
-        mutex_lock(&rdev->sched_scan_mtx);
         list_del_rcu(&wdev->list);
         rdev->devlist_generation++;
 
@@ -827,8 +720,6 @@ void cfg80211_unregister_wdev(struct wireless_dev *wdev)
                 WARN_ON_ONCE(1);
                 break;
         }
-        mutex_unlock(&rdev->sched_scan_mtx);
-        mutex_unlock(&rdev->devlist_mtx);
 }
 EXPORT_SYMBOL(cfg80211_unregister_wdev);
 
@@ -847,7 +738,7 @@ void cfg80211_update_iface_num(struct cfg80211_registered_device *rdev,
 }
 
 void cfg80211_leave(struct cfg80211_registered_device *rdev,
-                   struct wireless_dev *wdev)
+                    struct wireless_dev *wdev)
 {
         struct net_device *dev = wdev->netdev;
 
@@ -857,9 +748,7 @@ void cfg80211_leave(struct cfg80211_registered_device *rdev,
                 break;
         case NL80211_IFTYPE_P2P_CLIENT:
         case NL80211_IFTYPE_STATION:
-                mutex_lock(&rdev->sched_scan_mtx);
                 __cfg80211_stop_sched_scan(rdev, false);
-                mutex_unlock(&rdev->sched_scan_mtx);
 
                 wdev_lock(wdev);
 #ifdef CONFIG_CFG80211_WEXT
@@ -868,8 +757,8 @@ void cfg80211_leave(struct cfg80211_registered_device *rdev,
                 wdev->wext.ie_len = 0;
                 wdev->wext.connect.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
 #endif
-                __cfg80211_disconnect(rdev, dev,
-                                      WLAN_REASON_DEAUTH_LEAVING, true);
+                cfg80211_disconnect(rdev, dev,
+                                    WLAN_REASON_DEAUTH_LEAVING, true);
                 wdev_unlock(wdev);
                 break;
         case NL80211_IFTYPE_MESH_POINT:
@@ -886,10 +775,9 @@ void cfg80211_leave(struct cfg80211_registered_device *rdev,
 }
 
 static int cfg80211_netdev_notifier_call(struct notifier_block *nb,
-                                         unsigned long state,
-                                         void *ndev)
+                                         unsigned long state, void *ptr)
 {
-        struct net_device *dev = ndev;
+        struct net_device *dev = netdev_notifier_info_to_dev(ptr);
         struct wireless_dev *wdev = dev->ieee80211_ptr;
         struct cfg80211_registered_device *rdev;
         int ret;
@@ -912,13 +800,11 @@ static int cfg80211_netdev_notifier_call(struct notifier_block *nb,
                  * are added with nl80211.
                  */
                 mutex_init(&wdev->mtx);
-                INIT_WORK(&wdev->cleanup_work, wdev_cleanup_work);
                 INIT_LIST_HEAD(&wdev->event_list);
                 spin_lock_init(&wdev->event_lock);
                 INIT_LIST_HEAD(&wdev->mgmt_registrations);
                 spin_lock_init(&wdev->mgmt_registrations_lock);
 
-                mutex_lock(&rdev->devlist_mtx);
                 wdev->identifier = ++rdev->wdev_id;
                 list_add_rcu(&wdev->list, &rdev->wdev_list);
                 rdev->devlist_generation++;
@@ -930,8 +816,6 @@ static int cfg80211_netdev_notifier_call(struct notifier_block *nb,
                         pr_err("failed to add phy80211 symlink to netdev!\n");
                 }
                 wdev->netdev = dev;
-                wdev->sme_state = CFG80211_SME_IDLE;
-                mutex_unlock(&rdev->devlist_mtx);
 #ifdef CONFIG_CFG80211_WEXT
                 wdev->wext.default_key = -1;
                 wdev->wext.default_mgmt_key = -1;
@@ -957,26 +841,22 @@ static int cfg80211_netdev_notifier_call(struct notifier_block *nb,
                 break;
         case NETDEV_DOWN:
                 cfg80211_update_iface_num(rdev, wdev->iftype, -1);
-                dev_hold(dev);
-                queue_work(cfg80211_wq, &wdev->cleanup_work);
+                if (rdev->scan_req && rdev->scan_req->wdev == wdev) {
+                        if (WARN_ON(!rdev->scan_req->notified))
+                                rdev->scan_req->aborted = true;
+                        ___cfg80211_scan_done(rdev, true);
+                }
+
+                if (WARN_ON(rdev->sched_scan_req &&
+                            rdev->sched_scan_req->dev == wdev->netdev)) {
+                        __cfg80211_stop_sched_scan(rdev, false);
+                }
+
+                rdev->opencount--;
+                wake_up(&rdev->dev_wait);
                 break;
         case NETDEV_UP:
-                /*
-                 * If we have a really quick DOWN/UP succession we may
-                 * have this work still pending ... cancel it and see
-                 * if it was pending, in which case we need to account
-                 * for some of the work it would have done.
-                 */
-                if (cancel_work_sync(&wdev->cleanup_work)) {
-                        mutex_lock(&rdev->devlist_mtx);
-                        rdev->opencount--;
-                        mutex_unlock(&rdev->devlist_mtx);
-                        dev_put(dev);
-                }
                 cfg80211_update_iface_num(rdev, wdev->iftype, 1);
-                cfg80211_lock_rdev(rdev);
-                mutex_lock(&rdev->devlist_mtx);
-                mutex_lock(&rdev->sched_scan_mtx);
                 wdev_lock(wdev);
                 switch (wdev->iftype) {
 #ifdef CONFIG_CFG80211_WEXT
@@ -1008,10 +888,7 @@ static int cfg80211_netdev_notifier_call(struct notifier_block *nb,
                         break;
                 }
                 wdev_unlock(wdev);
-                mutex_unlock(&rdev->sched_scan_mtx);
                 rdev->opencount++;
-                mutex_unlock(&rdev->devlist_mtx);
-                cfg80211_unlock_rdev(rdev);
 
                 /*
                  * Configure power management to the driver here so that its
@@ -1028,12 +905,6 @@ static int cfg80211_netdev_notifier_call(struct notifier_block *nb,
                 break;
         case NETDEV_UNREGISTER:
                 /*
-                 * NB: cannot take rdev->mtx here because this may be
-                 * called within code protected by it when interfaces
-                 * are removed with nl80211.
-                 */
-                mutex_lock(&rdev->devlist_mtx);
-                /*
                  * It is possible to get NETDEV_UNREGISTER
                  * multiple times. To detect that, check
                  * that the interface is still on the list
@@ -1049,7 +920,6 @@ static int cfg80211_netdev_notifier_call(struct notifier_block *nb,
                         kfree(wdev->wext.keys);
 #endif
                 }
-                mutex_unlock(&rdev->devlist_mtx);
                 /*
                  * synchronise (so that we won't find this netdev
                  * from other code any more) and then clear the list
@@ -1063,15 +933,19 @@ static int cfg80211_netdev_notifier_call(struct notifier_block *nb,
                  * freed.
                  */
                 cfg80211_process_wdev_events(wdev);
+
+                if (WARN_ON(wdev->current_bss)) {
+                        cfg80211_unhold_bss(wdev->current_bss);
+                        cfg80211_put_bss(wdev->wiphy, &wdev->current_bss->pub);
+                        wdev->current_bss = NULL;
+                }
                 break;
         case NETDEV_PRE_UP:
                 if (!(wdev->wiphy->interface_modes & BIT(wdev->iftype)))
                         return notifier_from_errno(-EOPNOTSUPP);
                 if (rfkill_blocked(rdev->rfkill))
                         return notifier_from_errno(-ERFKILL);
-                mutex_lock(&rdev->devlist_mtx);
                 ret = cfg80211_can_add_interface(rdev, wdev->iftype);
-                mutex_unlock(&rdev->devlist_mtx);
                 if (ret)
                         return notifier_from_errno(ret);
                 break;
@@ -1089,12 +963,10 @@ static void __net_exit cfg80211_pernet_exit(struct net *net)
         struct cfg80211_registered_device *rdev;
 
         rtnl_lock();
-        mutex_lock(&cfg80211_mutex);
         list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
                 if (net_eq(wiphy_net(&rdev->wiphy), net))
                         WARN_ON(cfg80211_switch_netns(rdev, &init_net));
         }
-        mutex_unlock(&cfg80211_mutex);
         rtnl_unlock();
 }
 
diff --git a/net/wireless/core.h b/net/wireless/core.h
index fd35dae547c4..a6b45bf00f33 100644
--- a/net/wireless/core.h
+++ b/net/wireless/core.h
@@ -5,7 +5,6 @@
  */
 #ifndef __NET_WIRELESS_CORE_H
 #define __NET_WIRELESS_CORE_H
-#include <linux/mutex.h>
 #include <linux/list.h>
 #include <linux/netdevice.h>
 #include <linux/rbtree.h>
@@ -23,11 +22,6 @@
 struct cfg80211_registered_device {
         const struct cfg80211_ops *ops;
         struct list_head list;
-        /* we hold this mutex during any call so that
-         * we cannot do multiple calls at once, and also
-         * to avoid the deregister call to proceed while
-         * any call is in progress */
-        struct mutex mtx;
 
         /* rfkill support */
         struct rfkill_ops rfkill_ops;
@@ -49,9 +43,7 @@ struct cfg80211_registered_device {
         /* wiphy index, internal only */
         int wiphy_idx;
 
-        /* associated wireless interfaces */
-        struct mutex devlist_mtx;
-        /* protected by devlist_mtx or RCU */
+        /* associated wireless interfaces, protected by rtnl or RCU */
         struct list_head wdev_list;
         int devlist_generation, wdev_id;
         int opencount; /* also protected by devlist_mtx */
@@ -75,8 +67,6 @@ struct cfg80211_registered_device {
         struct work_struct scan_done_wk;
         struct work_struct sched_scan_results_wk;
 
-        struct mutex sched_scan_mtx;
-
 #ifdef CONFIG_NL80211_TESTMODE
         struct genl_info *testmode_info;
 #endif
@@ -84,8 +74,6 @@ struct cfg80211_registered_device {
         struct work_struct conn_work;
         struct work_struct event_work;
 
-        struct cfg80211_wowlan *wowlan;
-
         struct delayed_work dfs_update_channels_wk;
 
         /* netlink port which started critical protocol (0 means not started) */
@@ -106,29 +94,26 @@ struct cfg80211_registered_device *wiphy_to_dev(struct wiphy *wiphy)
 static inline void
 cfg80211_rdev_free_wowlan(struct cfg80211_registered_device *rdev)
 {
+#ifdef CONFIG_PM
         int i;
 
-        if (!rdev->wowlan)
+        if (!rdev->wiphy.wowlan_config)
                 return;
-        for (i = 0; i < rdev->wowlan->n_patterns; i++)
-                kfree(rdev->wowlan->patterns[i].mask);
-        kfree(rdev->wowlan->patterns);
-        if (rdev->wowlan->tcp && rdev->wowlan->tcp->sock)
-                sock_release(rdev->wowlan->tcp->sock);
-        kfree(rdev->wowlan->tcp);
-        kfree(rdev->wowlan);
+        for (i = 0; i < rdev->wiphy.wowlan_config->n_patterns; i++)
+                kfree(rdev->wiphy.wowlan_config->patterns[i].mask);
+        kfree(rdev->wiphy.wowlan_config->patterns);
+        if (rdev->wiphy.wowlan_config->tcp &&
+            rdev->wiphy.wowlan_config->tcp->sock)
+                sock_release(rdev->wiphy.wowlan_config->tcp->sock);
+        kfree(rdev->wiphy.wowlan_config->tcp);
+        kfree(rdev->wiphy.wowlan_config);
+#endif
 }
 
 extern struct workqueue_struct *cfg80211_wq;
-extern struct mutex cfg80211_mutex;
 extern struct list_head cfg80211_rdev_list;
 extern int cfg80211_rdev_list_generation;
 
-static inline void assert_cfg80211_lock(void)
-{
-        lockdep_assert_held(&cfg80211_mutex);
-}
-
 struct cfg80211_internal_bss {
         struct list_head list;
         struct list_head hidden_list;
@@ -161,27 +146,11 @@ static inline void cfg80211_unhold_bss(struct cfg80211_internal_bss *bss)
 struct cfg80211_registered_device *cfg80211_rdev_by_wiphy_idx(int wiphy_idx);
 int get_wiphy_idx(struct wiphy *wiphy);
 
-/* requires cfg80211_rdev_mutex to be held! */
 struct wiphy *wiphy_idx_to_wiphy(int wiphy_idx);
 
-/* identical to cfg80211_get_dev_from_info but only operate on ifindex */
-extern struct cfg80211_registered_device *
-cfg80211_get_dev_from_ifindex(struct net *net, int ifindex);
-
 int cfg80211_switch_netns(struct cfg80211_registered_device *rdev,
                           struct net *net);
 
-static inline void cfg80211_lock_rdev(struct cfg80211_registered_device *rdev)
-{
-        mutex_lock(&rdev->mtx);
-}
-
-static inline void cfg80211_unlock_rdev(struct cfg80211_registered_device *rdev)
-{
-        BUG_ON(IS_ERR(rdev) || !rdev);
-        mutex_unlock(&rdev->mtx);
-}
-
 static inline void wdev_lock(struct wireless_dev *wdev)
         __acquires(wdev)
 {
@@ -196,7 +165,7 @@ static inline void wdev_unlock(struct wireless_dev *wdev)
         mutex_unlock(&wdev->mtx);
 }
 
-#define ASSERT_RDEV_LOCK(rdev) lockdep_assert_held(&(rdev)->mtx)
+#define ASSERT_RDEV_LOCK(rdev) ASSERT_RTNL()
 #define ASSERT_WDEV_LOCK(wdev) lockdep_assert_held(&(wdev)->mtx)
 
 static inline bool cfg80211_has_monitors_only(struct cfg80211_registered_device *rdev)
@@ -314,38 +283,21 @@ int cfg80211_stop_ap(struct cfg80211_registered_device *rdev,
                      struct net_device *dev);
 
 /* MLME */
-int __cfg80211_mlme_auth(struct cfg80211_registered_device *rdev,
-                         struct net_device *dev,
-                         struct ieee80211_channel *chan,
-                         enum nl80211_auth_type auth_type,
-                         const u8 *bssid,
-                         const u8 *ssid, int ssid_len,
-                         const u8 *ie, int ie_len,
-                         const u8 *key, int key_len, int key_idx,
-                         const u8 *sae_data, int sae_data_len);
 int cfg80211_mlme_auth(struct cfg80211_registered_device *rdev,
-                       struct net_device *dev, struct ieee80211_channel *chan,
-                       enum nl80211_auth_type auth_type, const u8 *bssid,
+                       struct net_device *dev,
+                       struct ieee80211_channel *chan,
+                       enum nl80211_auth_type auth_type,
+                       const u8 *bssid,
                        const u8 *ssid, int ssid_len,
                        const u8 *ie, int ie_len,
                        const u8 *key, int key_len, int key_idx,
                        const u8 *sae_data, int sae_data_len);
-int __cfg80211_mlme_assoc(struct cfg80211_registered_device *rdev,
-                          struct net_device *dev,
-                          struct ieee80211_channel *chan,
-                          const u8 *bssid,
-                          const u8 *ssid, int ssid_len,
-                          struct cfg80211_assoc_request *req);
 int cfg80211_mlme_assoc(struct cfg80211_registered_device *rdev,
                         struct net_device *dev,
                         struct ieee80211_channel *chan,
                         const u8 *bssid,
                         const u8 *ssid, int ssid_len,
                         struct cfg80211_assoc_request *req);
-int __cfg80211_mlme_deauth(struct cfg80211_registered_device *rdev,
-                           struct net_device *dev, const u8 *bssid,
-                           const u8 *ie, int ie_len, u16 reason,
-                           bool local_state_change);
 int cfg80211_mlme_deauth(struct cfg80211_registered_device *rdev,
                          struct net_device *dev, const u8 *bssid,
                          const u8 *ie, int ie_len, u16 reason,
@@ -356,11 +308,6 @@ int cfg80211_mlme_disassoc(struct cfg80211_registered_device *rdev,
                            bool local_state_change);
 void cfg80211_mlme_down(struct cfg80211_registered_device *rdev,
                         struct net_device *dev);
-void __cfg80211_connect_result(struct net_device *dev, const u8 *bssid,
-                               const u8 *req_ie, size_t req_ie_len,
-                               const u8 *resp_ie, size_t resp_ie_len,
-                               u16 status, bool wextev,
-                               struct cfg80211_bss *bss);
 int cfg80211_mlme_register_mgmt(struct wireless_dev *wdev, u32 snd_pid,
                                 u16 frame_type, const u8 *match_data,
                                 int match_len);
@@ -376,19 +323,19 @@ void cfg80211_oper_and_ht_capa(struct ieee80211_ht_cap *ht_capa,
 void cfg80211_oper_and_vht_capa(struct ieee80211_vht_cap *vht_capa,
                                 const struct ieee80211_vht_cap *vht_capa_mask);
 
-/* SME */
-int __cfg80211_connect(struct cfg80211_registered_device *rdev,
-                       struct net_device *dev,
-                       struct cfg80211_connect_params *connect,
-                       struct cfg80211_cached_keys *connkeys,
-                       const u8 *prev_bssid);
+/* SME events */
 int cfg80211_connect(struct cfg80211_registered_device *rdev,
                      struct net_device *dev,
                      struct cfg80211_connect_params *connect,
-                     struct cfg80211_cached_keys *connkeys);
-int __cfg80211_disconnect(struct cfg80211_registered_device *rdev,
-                          struct net_device *dev, u16 reason,
-                          bool wextev);
+                     struct cfg80211_cached_keys *connkeys,
+                     const u8 *prev_bssid);
+void __cfg80211_connect_result(struct net_device *dev, const u8 *bssid,
+                               const u8 *req_ie, size_t req_ie_len,
+                               const u8 *resp_ie, size_t resp_ie_len,
+                               u16 status, bool wextev,
+                               struct cfg80211_bss *bss);
+void __cfg80211_disconnected(struct net_device *dev, const u8 *ie,
+                             size_t ie_len, u16 reason, bool from_ap);
 int cfg80211_disconnect(struct cfg80211_registered_device *rdev,
                         struct net_device *dev, u16 reason,
                         bool wextev);
@@ -399,21 +346,21 @@ void __cfg80211_roamed(struct wireless_dev *wdev,
 int cfg80211_mgd_wext_connect(struct cfg80211_registered_device *rdev,
                               struct wireless_dev *wdev);
 
+/* SME implementation */
 void cfg80211_conn_work(struct work_struct *work);
-void cfg80211_sme_failed_assoc(struct wireless_dev *wdev);
-bool cfg80211_sme_failed_reassoc(struct wireless_dev *wdev);
+void cfg80211_sme_scan_done(struct net_device *dev);
+bool cfg80211_sme_rx_assoc_resp(struct wireless_dev *wdev, u16 status);
+void cfg80211_sme_rx_auth(struct wireless_dev *wdev, const u8 *buf, size_t len);
+void cfg80211_sme_disassoc(struct wireless_dev *wdev);
+void cfg80211_sme_deauth(struct wireless_dev *wdev);
+void cfg80211_sme_auth_timeout(struct wireless_dev *wdev);
+void cfg80211_sme_assoc_timeout(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);
-void __cfg80211_disconnected(struct net_device *dev, const u8 *ie,
-                             size_t ie_len, u16 reason, bool from_ap);
-void cfg80211_sme_scan_done(struct net_device *dev);
-void cfg80211_sme_rx_auth(struct net_device *dev, const u8 *buf, size_t len);
-void cfg80211_sme_disassoc(struct net_device *dev,
-                           struct cfg80211_internal_bss *bss);
 void __cfg80211_scan_done(struct work_struct *wk);
 void ___cfg80211_scan_done(struct cfg80211_registered_device *rdev, bool leak);
 void __cfg80211_sched_scan_results(struct work_struct *wk);
diff --git a/net/wireless/debugfs.c b/net/wireless/debugfs.c
index 920cabe0461b..90d050036624 100644
--- a/net/wireless/debugfs.c
+++ b/net/wireless/debugfs.c
@@ -74,7 +74,7 @@ static ssize_t ht40allow_map_read(struct file *file,
         if (!buf)
                 return -ENOMEM;
 
-        mutex_lock(&cfg80211_mutex);
+        rtnl_lock();
 
         for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
                 sband = wiphy->bands[band];
@@ -85,7 +85,7 @@ static ssize_t ht40allow_map_read(struct file *file,
                                                 buf, buf_size, offset);
         }
 
-        mutex_unlock(&cfg80211_mutex);
+        rtnl_unlock();
 
         r = simple_read_from_buffer(user_buf, count, ppos, buf, offset);
 
diff --git a/net/wireless/ibss.c b/net/wireless/ibss.c
index d80e47194d49..39bff7d36768 100644
--- a/net/wireless/ibss.c
+++ b/net/wireless/ibss.c
@@ -43,7 +43,6 @@ void __cfg80211_ibss_joined(struct net_device *dev, const u8 *bssid)
         cfg80211_hold_bss(bss_from_pub(bss));
         wdev->current_bss = bss_from_pub(bss);
 
-        wdev->sme_state = CFG80211_SME_CONNECTED;
         cfg80211_upload_connect_keys(wdev);
 
         nl80211_send_ibss_bssid(wiphy_to_dev(wdev->wiphy), dev, bssid,
@@ -64,8 +63,6 @@ void cfg80211_ibss_joined(struct net_device *dev, const u8 *bssid, gfp_t gfp)
 
         trace_cfg80211_ibss_joined(dev, bssid);
 
-        CFG80211_DEV_WARN_ON(wdev->sme_state != CFG80211_SME_CONNECTING);
-
         ev = kzalloc(sizeof(*ev), gfp);
         if (!ev)
                 return;
@@ -120,7 +117,6 @@ int __cfg80211_join_ibss(struct cfg80211_registered_device *rdev,
 #ifdef CONFIG_CFG80211_WEXT
         wdev->wext.ibss.chandef = params->chandef;
 #endif
-        wdev->sme_state = CFG80211_SME_CONNECTING;
 
         err = cfg80211_can_use_chan(rdev, wdev, params->chandef.chan,
                                     params->channel_fixed
@@ -134,7 +130,6 @@ int __cfg80211_join_ibss(struct cfg80211_registered_device *rdev,
         err = rdev_join_ibss(rdev, dev, params);
         if (err) {
                 wdev->connect_keys = NULL;
-                wdev->sme_state = CFG80211_SME_IDLE;
                 return err;
         }
 
@@ -152,11 +147,11 @@ int cfg80211_join_ibss(struct cfg80211_registered_device *rdev,
         struct wireless_dev *wdev = dev->ieee80211_ptr;
         int err;
 
-        mutex_lock(&rdev->devlist_mtx);
+        ASSERT_RTNL();
+
         wdev_lock(wdev);
         err = __cfg80211_join_ibss(rdev, dev, params, connkeys);
         wdev_unlock(wdev);
-        mutex_unlock(&rdev->devlist_mtx);
 
         return err;
 }
@@ -186,7 +181,6 @@ static void __cfg80211_clear_ibss(struct net_device *dev, bool nowext)
         }
 
         wdev->current_bss = NULL;
-        wdev->sme_state = CFG80211_SME_IDLE;
         wdev->ssid_len = 0;
 #ifdef CONFIG_CFG80211_WEXT
         if (!nowext)
@@ -359,11 +353,9 @@ int cfg80211_ibss_wext_siwfreq(struct net_device *dev,
                 wdev->wext.ibss.channel_fixed = false;
         }
 
-        mutex_lock(&rdev->devlist_mtx);
         wdev_lock(wdev);
         err = cfg80211_ibss_wext_join(rdev, wdev);
         wdev_unlock(wdev);
-        mutex_unlock(&rdev->devlist_mtx);
 
         return err;
 }
@@ -429,11 +421,9 @@ int cfg80211_ibss_wext_siwessid(struct net_device *dev,
         memcpy(wdev->wext.ibss.ssid, ssid, len);
         wdev->wext.ibss.ssid_len = len;
 
-        mutex_lock(&rdev->devlist_mtx);
         wdev_lock(wdev);
         err = cfg80211_ibss_wext_join(rdev, wdev);
         wdev_unlock(wdev);
-        mutex_unlock(&rdev->devlist_mtx);
 
         return err;
 }
@@ -512,11 +502,9 @@ int cfg80211_ibss_wext_siwap(struct net_device *dev,
         } else
                 wdev->wext.ibss.bssid = NULL;
 
-        mutex_lock(&rdev->devlist_mtx);
         wdev_lock(wdev);
         err = cfg80211_ibss_wext_join(rdev, wdev);
         wdev_unlock(wdev);
-        mutex_unlock(&rdev->devlist_mtx);
 
         return err;
 }
diff --git a/net/wireless/mesh.c b/net/wireless/mesh.c
index 0bb93f3061a4..30c49202ee4d 100644
--- a/net/wireless/mesh.c
+++ b/net/wireless/mesh.c
@@ -18,6 +18,7 @@
 #define MESH_PATH_TO_ROOT_TIMEOUT      6000
 #define MESH_ROOT_INTERVAL     5000
 #define MESH_ROOT_CONFIRMATION_INTERVAL 2000
+#define MESH_DEFAULT_PLINK_TIMEOUT      1800 /* timeout in seconds */
 
 /*
  * Minimum interval between two consecutive PREQs originated by the same
@@ -75,6 +76,7 @@ const struct mesh_config default_mesh_config = {
         .dot11MeshHWMPconfirmationInterval = MESH_ROOT_CONFIRMATION_INTERVAL,
         .power_mode = NL80211_MESH_POWER_ACTIVE,
         .dot11MeshAwakeWindowDuration = MESH_DEFAULT_AWAKE_WINDOW,
+        .plink_timeout = MESH_DEFAULT_PLINK_TIMEOUT,
 };
 
 const struct mesh_setup default_mesh_setup = {
@@ -82,6 +84,7 @@ const struct mesh_setup default_mesh_setup = {
         .sync_method = IEEE80211_SYNC_METHOD_NEIGHBOR_OFFSET,
         .path_sel_proto = IEEE80211_PATH_PROTOCOL_HWMP,
         .path_metric = IEEE80211_PATH_METRIC_AIRTIME,
+        .auth_id = 0, /* open */
         .ie = NULL,
         .ie_len = 0,
         .is_secure = false,
@@ -159,6 +162,16 @@ int __cfg80211_join_mesh(struct cfg80211_registered_device *rdev,
                 setup->chandef.center_freq1 = setup->chandef.chan->center_freq;
         }
 
+        /*
+         * check if basic rates are available otherwise use mandatory rates as
+         * basic rates
+         */
+        if (!setup->basic_rates) {
+                struct ieee80211_supported_band *sband =
+                                rdev->wiphy.bands[setup->chandef.chan->band];
+                setup->basic_rates = ieee80211_mandatory_rates(sband);
+        }
+
         if (!cfg80211_reg_can_beacon(&rdev->wiphy, &setup->chandef))
                 return -EINVAL;
 
@@ -185,11 +198,9 @@ int cfg80211_join_mesh(struct cfg80211_registered_device *rdev,
         struct wireless_dev *wdev = dev->ieee80211_ptr;
         int err;
 
-        mutex_lock(&rdev->devlist_mtx);
         wdev_lock(wdev);
         err = __cfg80211_join_mesh(rdev, dev, setup, conf);
         wdev_unlock(wdev);
-        mutex_unlock(&rdev->devlist_mtx);
 
         return err;
 }
diff --git a/net/wireless/mlme.c b/net/wireless/mlme.c
index 0c7b7dd855f6..bfac5e186f57 100644
--- a/net/wireless/mlme.c
+++ b/net/wireless/mlme.c
@@ -18,37 +18,18 @@
 #include "rdev-ops.h"
 
 
-void cfg80211_send_rx_auth(struct net_device *dev, const u8 *buf, size_t len)
-{
-        struct wireless_dev *wdev = dev->ieee80211_ptr;
-        struct wiphy *wiphy = wdev->wiphy;
-        struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
-
-        trace_cfg80211_send_rx_auth(dev);
-        wdev_lock(wdev);
-
-        nl80211_send_rx_auth(rdev, dev, buf, len, GFP_KERNEL);
-        cfg80211_sme_rx_auth(dev, buf, len);
-
-        wdev_unlock(wdev);
-}
-EXPORT_SYMBOL(cfg80211_send_rx_auth);
-
-void cfg80211_send_rx_assoc(struct net_device *dev, struct cfg80211_bss *bss,
+void cfg80211_rx_assoc_resp(struct net_device *dev, struct cfg80211_bss *bss,
                             const u8 *buf, size_t len)
 {
-        u16 status_code;
         struct wireless_dev *wdev = dev->ieee80211_ptr;
         struct wiphy *wiphy = wdev->wiphy;
         struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
         struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *)buf;
         u8 *ie = mgmt->u.assoc_resp.variable;
         int ieoffs = offsetof(struct ieee80211_mgmt, u.assoc_resp.variable);
+        u16 status_code = le16_to_cpu(mgmt->u.assoc_resp.status_code);
 
         trace_cfg80211_send_rx_assoc(dev, bss);
-        wdev_lock(wdev);
-
-        status_code = le16_to_cpu(mgmt->u.assoc_resp.status_code);
 
         /*
          * This is a bit of a hack, we don't notify userspace of
@@ -56,174 +37,135 @@ void cfg80211_send_rx_assoc(struct net_device *dev, struct cfg80211_bss *bss,
          * and got a reject -- we only try again with an assoc
          * frame instead of reassoc.
          */
-        if (status_code != WLAN_STATUS_SUCCESS && wdev->conn &&
-            cfg80211_sme_failed_reassoc(wdev)) {
+        if (cfg80211_sme_rx_assoc_resp(wdev, status_code)) {
+                cfg80211_unhold_bss(bss_from_pub(bss));
                 cfg80211_put_bss(wiphy, bss);
-                goto out;
+                return;
         }
 
         nl80211_send_rx_assoc(rdev, dev, buf, len, GFP_KERNEL);
-
-        if (status_code != WLAN_STATUS_SUCCESS && wdev->conn) {
-                cfg80211_sme_failed_assoc(wdev);
-                /*
-                 * do not call connect_result() now because the
-                 * sme will schedule work that does it later.
-                 */
-                cfg80211_put_bss(wiphy, bss);
-                goto out;
-        }
-
-        if (!wdev->conn && wdev->sme_state == CFG80211_SME_IDLE) {
-                /*
-                 * This is for the userspace SME, the CONNECTING
-                 * state will be changed to CONNECTED by
-                 * __cfg80211_connect_result() below.
-                 */
-                wdev->sme_state = CFG80211_SME_CONNECTING;
-        }
-
-        /* this consumes the bss reference */
+        /* update current_bss etc., consumes the bss reference */
         __cfg80211_connect_result(dev, mgmt->bssid, NULL, 0, ie, len - ieoffs,
                                   status_code,
                                   status_code == WLAN_STATUS_SUCCESS, bss);
- out:
-        wdev_unlock(wdev);
 }
-EXPORT_SYMBOL(cfg80211_send_rx_assoc);
+EXPORT_SYMBOL(cfg80211_rx_assoc_resp);
 
-void __cfg80211_send_deauth(struct net_device *dev,
-                                   const u8 *buf, size_t len)
+static void cfg80211_process_auth(struct wireless_dev *wdev,
+                                  const u8 *buf, size_t len)
 {
-        struct wireless_dev *wdev = dev->ieee80211_ptr;
-        struct wiphy *wiphy = wdev->wiphy;
-        struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
-        struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *)buf;
-        const u8 *bssid = mgmt->bssid;
-        bool was_current = false;
+        struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
 
-        trace___cfg80211_send_deauth(dev);
-        ASSERT_WDEV_LOCK(wdev);
-
-        if (wdev->current_bss &&
-            ether_addr_equal(wdev->current_bss->pub.bssid, bssid)) {
-                cfg80211_unhold_bss(wdev->current_bss);
-                cfg80211_put_bss(wiphy, &wdev->current_bss->pub);
-                wdev->current_bss = NULL;
-                was_current = true;
-        }
+        nl80211_send_rx_auth(rdev, wdev->netdev, buf, len, GFP_KERNEL);
+        cfg80211_sme_rx_auth(wdev, buf, len);
+}
 
-        nl80211_send_deauth(rdev, dev, buf, len, GFP_KERNEL);
+static void cfg80211_process_deauth(struct wireless_dev *wdev,
+                                    const u8 *buf, size_t len)
+{
+        struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
+        struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *)buf;
+        const u8 *bssid = mgmt->bssid;
+        u16 reason_code = le16_to_cpu(mgmt->u.deauth.reason_code);
+        bool from_ap = !ether_addr_equal(mgmt->sa, wdev->netdev->dev_addr);
 
-        if (wdev->sme_state == CFG80211_SME_CONNECTED && was_current) {
-                u16 reason_code;
-                bool from_ap;
+        nl80211_send_deauth(rdev, wdev->netdev, buf, len, GFP_KERNEL);
 
-                reason_code = le16_to_cpu(mgmt->u.deauth.reason_code);
+        if (!wdev->current_bss ||
+            !ether_addr_equal(wdev->current_bss->pub.bssid, bssid))
+                return;
 
-                from_ap = !ether_addr_equal(mgmt->sa, dev->dev_addr);
-                __cfg80211_disconnected(dev, NULL, 0, reason_code, from_ap);
-        } else if (wdev->sme_state == CFG80211_SME_CONNECTING) {
-                __cfg80211_connect_result(dev, mgmt->bssid, NULL, 0, NULL, 0,
-                                          WLAN_STATUS_UNSPECIFIED_FAILURE,
-                                          false, NULL);
-        }
+        __cfg80211_disconnected(wdev->netdev, NULL, 0, reason_code, from_ap);
+        cfg80211_sme_deauth(wdev);
 }
-EXPORT_SYMBOL(__cfg80211_send_deauth);
 
-void cfg80211_send_deauth(struct net_device *dev, const u8 *buf, size_t len)
+static void cfg80211_process_disassoc(struct wireless_dev *wdev,
+                                      const u8 *buf, size_t len)
 {
-        struct wireless_dev *wdev = dev->ieee80211_ptr;
+        struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
+        struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *)buf;
+        const u8 *bssid = mgmt->bssid;
+        u16 reason_code = le16_to_cpu(mgmt->u.disassoc.reason_code);
+        bool from_ap = !ether_addr_equal(mgmt->sa, wdev->netdev->dev_addr);
 
-        wdev_lock(wdev);
-        __cfg80211_send_deauth(dev, buf, len);
-        wdev_unlock(wdev);
+        nl80211_send_disassoc(rdev, wdev->netdev, buf, len, GFP_KERNEL);
+
+        if (WARN_ON(!wdev->current_bss ||
+                    !ether_addr_equal(wdev->current_bss->pub.bssid, bssid)))
+                return;
+
+        __cfg80211_disconnected(wdev->netdev, NULL, 0, reason_code, from_ap);
+        cfg80211_sme_disassoc(wdev);
 }
-EXPORT_SYMBOL(cfg80211_send_deauth);
 
-void __cfg80211_send_disassoc(struct net_device *dev,
-                                     const u8 *buf, size_t len)
+void cfg80211_rx_mlme_mgmt(struct net_device *dev, const u8 *buf, size_t len)
 {
         struct wireless_dev *wdev = dev->ieee80211_ptr;
-        struct wiphy *wiphy = wdev->wiphy;
-        struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
-        struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *)buf;
-        const u8 *bssid = mgmt->bssid;
-        u16 reason_code;
-        bool from_ap;
+        struct ieee80211_mgmt *mgmt = (void *)buf;
 
-        trace___cfg80211_send_disassoc(dev);
         ASSERT_WDEV_LOCK(wdev);
 
-        nl80211_send_disassoc(rdev, dev, buf, len, GFP_KERNEL);
+        trace_cfg80211_rx_mlme_mgmt(dev, buf, len);
 
-        if (wdev->sme_state != CFG80211_SME_CONNECTED)
+        if (WARN_ON(len < 2))
                 return;
 
-        if (wdev->current_bss &&
-            ether_addr_equal(wdev->current_bss->pub.bssid, bssid)) {
-                cfg80211_sme_disassoc(dev, wdev->current_bss);
-                cfg80211_unhold_bss(wdev->current_bss);
-                cfg80211_put_bss(wiphy, &wdev->current_bss->pub);
-                wdev->current_bss = NULL;
-        } else
-                WARN_ON(1);
-
-
-        reason_code = le16_to_cpu(mgmt->u.disassoc.reason_code);
-
-        from_ap = !ether_addr_equal(mgmt->sa, dev->dev_addr);
-        __cfg80211_disconnected(dev, NULL, 0, reason_code, from_ap);
+        if (ieee80211_is_auth(mgmt->frame_control))
+                cfg80211_process_auth(wdev, buf, len);
+        else if (ieee80211_is_deauth(mgmt->frame_control))
+                cfg80211_process_deauth(wdev, buf, len);
+        else if (ieee80211_is_disassoc(mgmt->frame_control))
+                cfg80211_process_disassoc(wdev, buf, len);
 }
-EXPORT_SYMBOL(__cfg80211_send_disassoc);
+EXPORT_SYMBOL(cfg80211_rx_mlme_mgmt);
 
-void cfg80211_send_disassoc(struct net_device *dev, const u8 *buf, size_t len)
+void cfg80211_auth_timeout(struct net_device *dev, const u8 *addr)
 {
         struct wireless_dev *wdev = dev->ieee80211_ptr;
+        struct wiphy *wiphy = wdev->wiphy;
+        struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
+
+        trace_cfg80211_send_auth_timeout(dev, addr);
 
-        wdev_lock(wdev);
-        __cfg80211_send_disassoc(dev, buf, len);
-        wdev_unlock(wdev);
+        nl80211_send_auth_timeout(rdev, dev, addr, GFP_KERNEL);
+        cfg80211_sme_auth_timeout(wdev);
 }
-EXPORT_SYMBOL(cfg80211_send_disassoc);
+EXPORT_SYMBOL(cfg80211_auth_timeout);
 
-void cfg80211_send_auth_timeout(struct net_device *dev, const u8 *addr)
+void cfg80211_assoc_timeout(struct net_device *dev, struct cfg80211_bss *bss)
 {
         struct wireless_dev *wdev = dev->ieee80211_ptr;
         struct wiphy *wiphy = wdev->wiphy;
         struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
 
-        trace_cfg80211_send_auth_timeout(dev, addr);
-        wdev_lock(wdev);
+        trace_cfg80211_send_assoc_timeout(dev, bss->bssid);
 
-        nl80211_send_auth_timeout(rdev, dev, addr, GFP_KERNEL);
-        if (wdev->sme_state == CFG80211_SME_CONNECTING)
-                __cfg80211_connect_result(dev, addr, NULL, 0, NULL, 0,
-                                          WLAN_STATUS_UNSPECIFIED_FAILURE,
-                                          false, NULL);
+        nl80211_send_assoc_timeout(rdev, dev, bss->bssid, GFP_KERNEL);
+        cfg80211_sme_assoc_timeout(wdev);
 
-        wdev_unlock(wdev);
+        cfg80211_unhold_bss(bss_from_pub(bss));
+        cfg80211_put_bss(wiphy, bss);
 }
-EXPORT_SYMBOL(cfg80211_send_auth_timeout);
+EXPORT_SYMBOL(cfg80211_assoc_timeout);
 
-void cfg80211_send_assoc_timeout(struct net_device *dev, const u8 *addr)
+void cfg80211_tx_mlme_mgmt(struct net_device *dev, const u8 *buf, size_t len)
 {
         struct wireless_dev *wdev = dev->ieee80211_ptr;
-        struct wiphy *wiphy = wdev->wiphy;
-        struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
+        struct ieee80211_mgmt *mgmt = (void *)buf;
 
-        trace_cfg80211_send_assoc_timeout(dev, addr);
-        wdev_lock(wdev);
+        ASSERT_WDEV_LOCK(wdev);
 
-        nl80211_send_assoc_timeout(rdev, dev, addr, GFP_KERNEL);
-        if (wdev->sme_state == CFG80211_SME_CONNECTING)
-                __cfg80211_connect_result(dev, addr, NULL, 0, NULL, 0,
-                                          WLAN_STATUS_UNSPECIFIED_FAILURE,
-                                          false, NULL);
+        trace_cfg80211_tx_mlme_mgmt(dev, buf, len);
 
-        wdev_unlock(wdev);
+        if (WARN_ON(len < 2))
+                return;
+
+        if (ieee80211_is_deauth(mgmt->frame_control))
+                cfg80211_process_deauth(wdev, buf, len);
+        else
+                cfg80211_process_disassoc(wdev, buf, len);
 }
-EXPORT_SYMBOL(cfg80211_send_assoc_timeout);
+EXPORT_SYMBOL(cfg80211_tx_mlme_mgmt);
 
 void cfg80211_michael_mic_failure(struct net_device *dev, const u8 *addr,
                                   enum nl80211_key_type key_type, int key_id,
@@ -253,18 +195,27 @@ void cfg80211_michael_mic_failure(struct net_device *dev, const u8 *addr,
 EXPORT_SYMBOL(cfg80211_michael_mic_failure);
 
 /* some MLME handling for userspace SME */
-int __cfg80211_mlme_auth(struct cfg80211_registered_device *rdev,
-                         struct net_device *dev,
-                         struct ieee80211_channel *chan,
-                         enum nl80211_auth_type auth_type,
-                         const u8 *bssid,
-                         const u8 *ssid, int ssid_len,
-                         const u8 *ie, int ie_len,
-                         const u8 *key, int key_len, int key_idx,
-                         const u8 *sae_data, int sae_data_len)
+int cfg80211_mlme_auth(struct cfg80211_registered_device *rdev,
+                       struct net_device *dev,
+                       struct ieee80211_channel *chan,
+                       enum nl80211_auth_type auth_type,
+                       const u8 *bssid,
+                       const u8 *ssid, int ssid_len,
+                       const u8 *ie, int ie_len,
+                       const u8 *key, int key_len, int key_idx,
+                       const u8 *sae_data, int sae_data_len)
 {
         struct wireless_dev *wdev = dev->ieee80211_ptr;
-        struct cfg80211_auth_request req;
+        struct cfg80211_auth_request req = {
+                .ie = ie,
+                .ie_len = ie_len,
+                .sae_data = sae_data,
+                .sae_data_len = sae_data_len,
+                .auth_type = auth_type,
+                .key = key,
+                .key_len = key_len,
+                .key_idx = key_idx,
+        };
         int err;
 
         ASSERT_WDEV_LOCK(wdev);
@@ -277,18 +228,8 @@ int __cfg80211_mlme_auth(struct cfg80211_registered_device *rdev,
             ether_addr_equal(bssid, wdev->current_bss->pub.bssid))
                 return -EALREADY;
 
-        memset(&req, 0, sizeof(req));
-
-        req.ie = ie;
-        req.ie_len = ie_len;
-        req.sae_data = sae_data;
-        req.sae_data_len = sae_data_len;
-        req.auth_type = auth_type;
         req.bss = cfg80211_get_bss(&rdev->wiphy, chan, bssid, ssid, ssid_len,
                                    WLAN_CAPABILITY_ESS, WLAN_CAPABILITY_ESS);
-        req.key = key;
-        req.key_len = key_len;
-        req.key_idx = key_idx;
         if (!req.bss)
                 return -ENOENT;
 
@@ -304,28 +245,6 @@ out:
         return err;
 }
 
-int cfg80211_mlme_auth(struct cfg80211_registered_device *rdev,
-                       struct net_device *dev, struct ieee80211_channel *chan,
-                       enum nl80211_auth_type auth_type, const u8 *bssid,
-                       const u8 *ssid, int ssid_len,
-                       const u8 *ie, int ie_len,
-                       const u8 *key, int key_len, int key_idx,
-                       const u8 *sae_data, int sae_data_len)
-{
-        int err;
-
-        mutex_lock(&rdev->devlist_mtx);
-        wdev_lock(dev->ieee80211_ptr);
-        err = __cfg80211_mlme_auth(rdev, dev, chan, auth_type, bssid,
-                                   ssid, ssid_len, ie, ie_len,
-                                   key, key_len, key_idx,
-                                   sae_data, sae_data_len);
-        wdev_unlock(dev->ieee80211_ptr);
-        mutex_unlock(&rdev->devlist_mtx);
-
-        return err;
-}
-
 /*  Do a logical ht_capa &= ht_capa_mask.  */
 void cfg80211_oper_and_ht_capa(struct ieee80211_ht_cap *ht_capa,
                                const struct ieee80211_ht_cap *ht_capa_mask)
@@ -360,30 +279,21 @@ void cfg80211_oper_and_vht_capa(struct ieee80211_vht_cap *vht_capa,
                 p1[i] &= p2[i];
 }
 
-int __cfg80211_mlme_assoc(struct cfg80211_registered_device *rdev,
-                          struct net_device *dev,
-                          struct ieee80211_channel *chan,
-                          const u8 *bssid,
-                          const u8 *ssid, int ssid_len,
-                          struct cfg80211_assoc_request *req)
+int cfg80211_mlme_assoc(struct cfg80211_registered_device *rdev,
+                        struct net_device *dev,
+                        struct ieee80211_channel *chan,
+                        const u8 *bssid,
+                        const u8 *ssid, int ssid_len,
+                        struct cfg80211_assoc_request *req)
 {
         struct wireless_dev *wdev = dev->ieee80211_ptr;
         int err;
-        bool was_connected = false;
 
         ASSERT_WDEV_LOCK(wdev);
 
-        if (wdev->current_bss && req->prev_bssid &&
-            ether_addr_equal(wdev->current_bss->pub.bssid, req->prev_bssid)) {
-                /*
-                 * Trying to reassociate: Allow this to proceed and let the old
-                 * association to be dropped when the new one is completed.
-                 */
-                if (wdev->sme_state == CFG80211_SME_CONNECTED) {
-                        was_connected = true;
-                        wdev->sme_state = CFG80211_SME_CONNECTING;
-                }
-        } else if (wdev->current_bss)
+        if (wdev->current_bss &&
+            (!req->prev_bssid || !ether_addr_equal(wdev->current_bss->pub.bssid,
+                                                   req->prev_bssid)))
                 return -EALREADY;
 
         cfg80211_oper_and_ht_capa(&req->ht_capa_mask,
@@ -393,52 +303,28 @@ int __cfg80211_mlme_assoc(struct cfg80211_registered_device *rdev,
 
         req->bss = cfg80211_get_bss(&rdev->wiphy, chan, bssid, ssid, ssid_len,
                                     WLAN_CAPABILITY_ESS, WLAN_CAPABILITY_ESS);
-        if (!req->bss) {
-                if (was_connected)
-                        wdev->sme_state = CFG80211_SME_CONNECTED;
+        if (!req->bss)
                 return -ENOENT;
-        }
 
         err = cfg80211_can_use_chan(rdev, wdev, chan, CHAN_MODE_SHARED);
         if (err)
                 goto out;
 
         err = rdev_assoc(rdev, dev, req);
+        if (!err)
+                cfg80211_hold_bss(bss_from_pub(req->bss));
 
 out:
-        if (err) {
-                if (was_connected)
-                        wdev->sme_state = CFG80211_SME_CONNECTED;
+        if (err)
                 cfg80211_put_bss(&rdev->wiphy, req->bss);
-        }
 
         return err;
 }
 
-int cfg80211_mlme_assoc(struct cfg80211_registered_device *rdev,
-                        struct net_device *dev,
-                        struct ieee80211_channel *chan,
-                        const u8 *bssid,
-                        const u8 *ssid, int ssid_len,
-                        struct cfg80211_assoc_request *req)
-{
-        struct wireless_dev *wdev = dev->ieee80211_ptr;
-        int err;
-
-        mutex_lock(&rdev->devlist_mtx);
-        wdev_lock(wdev);
-        err = __cfg80211_mlme_assoc(rdev, dev, chan, bssid,
-                                    ssid, ssid_len, req);
-        wdev_unlock(wdev);
-        mutex_unlock(&rdev->devlist_mtx);
-
-        return err;
-}
-
-int __cfg80211_mlme_deauth(struct cfg80211_registered_device *rdev,
-                           struct net_device *dev, const u8 *bssid,
-                           const u8 *ie, int ie_len, u16 reason,
-                           bool local_state_change)
+int cfg80211_mlme_deauth(struct cfg80211_registered_device *rdev,
+                         struct net_device *dev, const u8 *bssid,
+                         const u8 *ie, int ie_len, u16 reason,
+                         bool local_state_change)
 {
         struct wireless_dev *wdev = dev->ieee80211_ptr;
         struct cfg80211_deauth_request req = {
@@ -451,79 +337,51 @@ int __cfg80211_mlme_deauth(struct cfg80211_registered_device *rdev,
 
         ASSERT_WDEV_LOCK(wdev);
 
-        if (local_state_change && (!wdev->current_bss ||
-            !ether_addr_equal(wdev->current_bss->pub.bssid, bssid)))
+        if (local_state_change &&
+            (!wdev->current_bss ||
+             !ether_addr_equal(wdev->current_bss->pub.bssid, bssid)))
                 return 0;
 
         return rdev_deauth(rdev, dev, &req);
 }
 
-int cfg80211_mlme_deauth(struct cfg80211_registered_device *rdev,
-                         struct net_device *dev, const u8 *bssid,
-                         const u8 *ie, int ie_len, u16 reason,
-                         bool local_state_change)
+int cfg80211_mlme_disassoc(struct cfg80211_registered_device *rdev,
+                           struct net_device *dev, const u8 *bssid,
+                           const u8 *ie, int ie_len, u16 reason,
+                           bool local_state_change)
 {
         struct wireless_dev *wdev = dev->ieee80211_ptr;
+        struct cfg80211_disassoc_request req = {
+                .reason_code = reason,
+                .local_state_change = local_state_change,
+                .ie = ie,
+                .ie_len = ie_len,
+        };
         int err;
 
-        wdev_lock(wdev);
-        err = __cfg80211_mlme_deauth(rdev, dev, bssid, ie, ie_len, reason,
-                                     local_state_change);
-        wdev_unlock(wdev);
-
-        return err;
-}
-
-static int __cfg80211_mlme_disassoc(struct cfg80211_registered_device *rdev,
-                                    struct net_device *dev, const u8 *bssid,
-                                    const u8 *ie, int ie_len, u16 reason,
-                                    bool local_state_change)
-{
-        struct wireless_dev *wdev = dev->ieee80211_ptr;
-        struct cfg80211_disassoc_request req;
-
         ASSERT_WDEV_LOCK(wdev);
 
-        if (wdev->sme_state != CFG80211_SME_CONNECTED)
-                return -ENOTCONN;
-
-        if (WARN(!wdev->current_bss, "sme_state=%d\n", wdev->sme_state))
+        if (!wdev->current_bss)
                 return -ENOTCONN;
 
-        memset(&req, 0, sizeof(req));
-        req.reason_code = reason;
-        req.local_state_change = local_state_change;
-        req.ie = ie;
-        req.ie_len = ie_len;
         if (ether_addr_equal(wdev->current_bss->pub.bssid, bssid))
                 req.bss = &wdev->current_bss->pub;
         else
                 return -ENOTCONN;
 
-        return rdev_disassoc(rdev, dev, &req);
-}
-
-int cfg80211_mlme_disassoc(struct cfg80211_registered_device *rdev,
-                           struct net_device *dev, const u8 *bssid,
-                           const u8 *ie, int ie_len, u16 reason,
-                           bool local_state_change)
-{
-        struct wireless_dev *wdev = dev->ieee80211_ptr;
-        int err;
-
-        wdev_lock(wdev);
-        err = __cfg80211_mlme_disassoc(rdev, dev, bssid, ie, ie_len, reason,
-                                       local_state_change);
-        wdev_unlock(wdev);
+        err = rdev_disassoc(rdev, dev, &req);
+        if (err)
+                return err;
 
-        return err;
+        /* driver should have reported the disassoc */
+        WARN_ON(wdev->current_bss);
+        return 0;
 }
 
 void cfg80211_mlme_down(struct cfg80211_registered_device *rdev,
                         struct net_device *dev)
 {
         struct wireless_dev *wdev = dev->ieee80211_ptr;
-        struct cfg80211_deauth_request req;
         u8 bssid[ETH_ALEN];
 
         ASSERT_WDEV_LOCK(wdev);
@@ -531,23 +389,12 @@ void cfg80211_mlme_down(struct cfg80211_registered_device *rdev,
         if (!rdev->ops->deauth)
                 return;
 
-        memset(&req, 0, sizeof(req));
-        req.reason_code = WLAN_REASON_DEAUTH_LEAVING;
-        req.ie = NULL;
-        req.ie_len = 0;
-
         if (!wdev->current_bss)
                 return;
 
         memcpy(bssid, wdev->current_bss->pub.bssid, ETH_ALEN);
-        req.bssid = bssid;
-        rdev_deauth(rdev, dev, &req);
-
-        if (wdev->current_bss) {
-                cfg80211_unhold_bss(wdev->current_bss);
-                cfg80211_put_bss(&rdev->wiphy, &wdev->current_bss->pub);
-                wdev->current_bss = NULL;
-        }
+        cfg80211_mlme_deauth(rdev, dev, bssid, NULL, 0,
+                             WLAN_REASON_DEAUTH_LEAVING, false);
 }
 
 struct cfg80211_mgmt_registration {
@@ -848,7 +695,7 @@ void cfg80211_dfs_channels_update_work(struct work_struct *work)
                             dfs_update_channels_wk);
         wiphy = &rdev->wiphy;
 
-        mutex_lock(&cfg80211_mutex);
+        rtnl_lock();
         for (bandid = 0; bandid < IEEE80211_NUM_BANDS; bandid++) {
                 sband = wiphy->bands[bandid];
                 if (!sband)
@@ -881,7 +728,7 @@ void cfg80211_dfs_channels_update_work(struct work_struct *work)
                         check_again = true;
                 }
         }
-        mutex_unlock(&cfg80211_mutex);
+        rtnl_unlock();
 
         /* reschedule if there are other channels waiting to be cleared again */
         if (check_again)
diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c
index b14b7e3cb6e6..1cc47aca7f05 100644
--- a/net/wireless/nl80211.c
+++ b/net/wireless/nl80211.c
@@ -37,10 +37,10 @@ static void nl80211_post_doit(struct genl_ops *ops, struct sk_buff *skb,
 
 /* the netlink family */
 static struct genl_family nl80211_fam = {
-        .id = GENL_ID_GENERATE, /* don't bother with a hardcoded ID */
-        .name = "nl80211",      /* have users key off the name instead */
-        .hdrsize = 0,           /* no private header */
-        .version = 1,           /* no particular meaning now */
+        .id = GENL_ID_GENERATE,         /* don't bother with a hardcoded ID */
+        .name = NL80211_GENL_NAME,      /* have users key off the name instead */
+        .hdrsize = 0,                   /* no private header */
+        .version = 1,                   /* no particular meaning now */
         .maxattr = NL80211_ATTR_MAX,
         .netnsok = true,
         .pre_doit = nl80211_pre_doit,
@@ -59,7 +59,7 @@ __cfg80211_wdev_from_attrs(struct net *netns, struct nlattr **attrs)
         int wiphy_idx = -1;
         int ifidx = -1;
 
-        assert_cfg80211_lock();
+        ASSERT_RTNL();
 
         if (!have_ifidx && !have_wdev_id)
                 return ERR_PTR(-EINVAL);
@@ -80,7 +80,6 @@ __cfg80211_wdev_from_attrs(struct net *netns, struct nlattr **attrs)
                 if (have_wdev_id && rdev->wiphy_idx != wiphy_idx)
                         continue;
 
-                mutex_lock(&rdev->devlist_mtx);
                 list_for_each_entry(wdev, &rdev->wdev_list, list) {
                         if (have_ifidx && wdev->netdev &&
                             wdev->netdev->ifindex == ifidx) {
@@ -92,7 +91,6 @@ __cfg80211_wdev_from_attrs(struct net *netns, struct nlattr **attrs)
                                 break;
                         }
                 }
-                mutex_unlock(&rdev->devlist_mtx);
 
                 if (result)
                         break;
@@ -109,7 +107,7 @@ __cfg80211_rdev_from_attrs(struct net *netns, struct nlattr **attrs)
         struct cfg80211_registered_device *rdev = NULL, *tmp;
         struct net_device *netdev;
 
-        assert_cfg80211_lock();
+        ASSERT_RTNL();
 
         if (!attrs[NL80211_ATTR_WIPHY] &&
             !attrs[NL80211_ATTR_IFINDEX] &&
@@ -128,14 +126,12 @@ __cfg80211_rdev_from_attrs(struct net *netns, struct nlattr **attrs)
                 tmp = cfg80211_rdev_by_wiphy_idx(wdev_id >> 32);
                 if (tmp) {
                         /* make sure wdev exists */
-                        mutex_lock(&tmp->devlist_mtx);
                         list_for_each_entry(wdev, &tmp->wdev_list, list) {
                                 if (wdev->identifier != (u32)wdev_id)
                                         continue;
                                 found = true;
                                 break;
                         }
-                        mutex_unlock(&tmp->devlist_mtx);
 
                         if (!found)
                                 tmp = NULL;
@@ -182,19 +178,6 @@ __cfg80211_rdev_from_attrs(struct net *netns, struct nlattr **attrs)
 /*
  * This function returns a pointer to the driver
  * that the genl_info item that is passed refers to.
- * If successful, it returns non-NULL and also locks
- * the driver's mutex!
- *
- * This means that you need to call cfg80211_unlock_rdev()
- * before being allowed to acquire &cfg80211_mutex!
- *
- * This is necessary because we need to lock the global
- * mutex to get an item off the list safely, and then
- * we lock the rdev mutex so it doesn't go away under us.
- *
- * We don't want to keep cfg80211_mutex locked
- * for all the time in order to allow requests on
- * other interfaces to go through at the same time.
  *
  * The result of this can be a PTR_ERR and hence must
  * be checked with IS_ERR() for errors.
@@ -202,20 +185,7 @@ __cfg80211_rdev_from_attrs(struct net *netns, struct nlattr **attrs)
 static struct cfg80211_registered_device *
 cfg80211_get_dev_from_info(struct net *netns, struct genl_info *info)
 {
-        struct cfg80211_registered_device *rdev;
-
-        mutex_lock(&cfg80211_mutex);
-        rdev = __cfg80211_rdev_from_attrs(netns, info->attrs);
-
-        /* if it is not an error we grab the lock on
-         * it to assure it won't be going away while
-         * we operate on it */
-        if (!IS_ERR(rdev))
-                mutex_lock(&rdev->mtx);
-
-        mutex_unlock(&cfg80211_mutex);
-
-        return rdev;
+        return __cfg80211_rdev_from_attrs(netns, info->attrs);
 }
 
 /* policy for the attributes */
@@ -378,6 +348,7 @@ static const struct nla_policy nl80211_policy[NL80211_ATTR_MAX+1] = {
         [NL80211_ATTR_MDID] = { .type = NLA_U16 },
         [NL80211_ATTR_IE_RIC] = { .type = NLA_BINARY,
                                   .len = IEEE80211_MAX_DATA_LEN },
+        [NL80211_ATTR_PEER_AID] = { .type = NLA_U16 },
 };
 
 /* policy for the key attributes */
@@ -455,7 +426,6 @@ static int nl80211_prepare_wdev_dump(struct sk_buff *skb,
         int err;
 
         rtnl_lock();
-        mutex_lock(&cfg80211_mutex);
 
         if (!cb->args[0]) {
                 err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
@@ -484,14 +454,12 @@ static int nl80211_prepare_wdev_dump(struct sk_buff *skb,
                 *rdev = wiphy_to_dev(wiphy);
                 *wdev = NULL;
 
-                mutex_lock(&(*rdev)->devlist_mtx);
                 list_for_each_entry(tmp, &(*rdev)->wdev_list, list) {
                         if (tmp->identifier == cb->args[1]) {
                                 *wdev = tmp;
                                 break;
                         }
                 }
-                mutex_unlock(&(*rdev)->devlist_mtx);
 
                 if (!*wdev) {
                         err = -ENODEV;
@@ -499,19 +467,14 @@ static int nl80211_prepare_wdev_dump(struct sk_buff *skb,
                 }
         }
 
-        cfg80211_lock_rdev(*rdev);
-
-        mutex_unlock(&cfg80211_mutex);
         return 0;
  out_unlock:
-        mutex_unlock(&cfg80211_mutex);
         rtnl_unlock();
         return err;
 }
 
 static void nl80211_finish_wdev_dump(struct cfg80211_registered_device *rdev)
 {
-        cfg80211_unlock_rdev(rdev);
         rtnl_unlock();
 }
 
@@ -837,12 +800,9 @@ static int nl80211_key_allowed(struct wireless_dev *wdev)
         case NL80211_IFTYPE_MESH_POINT:
                 break;
         case NL80211_IFTYPE_ADHOC:
-                if (!wdev->current_bss)
-                        return -ENOLINK;
-                break;
         case NL80211_IFTYPE_STATION:
         case NL80211_IFTYPE_P2P_CLIENT:
-                if (wdev->sme_state != CFG80211_SME_CONNECTED)
+                if (!wdev->current_bss)
                         return -ENOLINK;
                 break;
         default:
@@ -945,7 +905,7 @@ nla_put_failure:
 static int nl80211_send_wowlan_tcp_caps(struct cfg80211_registered_device *rdev,
                                         struct sk_buff *msg)
 {
-        const struct wiphy_wowlan_tcp_support *tcp = rdev->wiphy.wowlan.tcp;
+        const struct wiphy_wowlan_tcp_support *tcp = rdev->wiphy.wowlan->tcp;
         struct nlattr *nl_tcp;
 
         if (!tcp)
@@ -988,37 +948,37 @@ static int nl80211_send_wowlan(struct sk_buff *msg,
 {
         struct nlattr *nl_wowlan;
 
-        if (!dev->wiphy.wowlan.flags && !dev->wiphy.wowlan.n_patterns)
+        if (!dev->wiphy.wowlan)
                 return 0;
 
         nl_wowlan = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS_SUPPORTED);
         if (!nl_wowlan)
                 return -ENOBUFS;
 
-        if (((dev->wiphy.wowlan.flags & WIPHY_WOWLAN_ANY) &&
+        if (((dev->wiphy.wowlan->flags & WIPHY_WOWLAN_ANY) &&
              nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) ||
-            ((dev->wiphy.wowlan.flags & WIPHY_WOWLAN_DISCONNECT) &&
+            ((dev->wiphy.wowlan->flags & WIPHY_WOWLAN_DISCONNECT) &&
              nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) ||
-            ((dev->wiphy.wowlan.flags & WIPHY_WOWLAN_MAGIC_PKT) &&
+            ((dev->wiphy.wowlan->flags & WIPHY_WOWLAN_MAGIC_PKT) &&
              nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) ||
-            ((dev->wiphy.wowlan.flags & WIPHY_WOWLAN_SUPPORTS_GTK_REKEY) &&
+            ((dev->wiphy.wowlan->flags & WIPHY_WOWLAN_SUPPORTS_GTK_REKEY) &&
              nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED)) ||
-            ((dev->wiphy.wowlan.flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE) &&
+            ((dev->wiphy.wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE) &&
              nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) ||
-            ((dev->wiphy.wowlan.flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ) &&
+            ((dev->wiphy.wowlan->flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ) &&
              nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) ||
-            ((dev->wiphy.wowlan.flags & WIPHY_WOWLAN_4WAY_HANDSHAKE) &&
+            ((dev->wiphy.wowlan->flags & WIPHY_WOWLAN_4WAY_HANDSHAKE) &&
              nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) ||
-            ((dev->wiphy.wowlan.flags & WIPHY_WOWLAN_RFKILL_RELEASE) &&
+            ((dev->wiphy.wowlan->flags & WIPHY_WOWLAN_RFKILL_RELEASE) &&
              nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE)))
                 return -ENOBUFS;
 
-        if (dev->wiphy.wowlan.n_patterns) {
+        if (dev->wiphy.wowlan->n_patterns) {
                 struct nl80211_wowlan_pattern_support pat = {
-                        .max_patterns = dev->wiphy.wowlan.n_patterns,
-                        .min_pattern_len = dev->wiphy.wowlan.pattern_min_len,
-                        .max_pattern_len = dev->wiphy.wowlan.pattern_max_len,
-                        .max_pkt_offset = dev->wiphy.wowlan.max_pkt_offset,
+                        .max_patterns = dev->wiphy.wowlan->n_patterns,
+                        .min_pattern_len = dev->wiphy.wowlan->pattern_min_len,
+                        .max_pattern_len = dev->wiphy.wowlan->pattern_max_len,
+                        .max_pkt_offset = dev->wiphy.wowlan->max_pkt_offset,
                 };
 
                 if (nla_put(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN,
@@ -1151,10 +1111,16 @@ nl80211_send_mgmt_stypes(struct sk_buff *msg,
         return 0;
 }
 
+struct nl80211_dump_wiphy_state {
+        s64 filter_wiphy;
+        long start;
+        long split_start, band_start, chan_start;
+        bool split;
+};
+
 static int nl80211_send_wiphy(struct cfg80211_registered_device *dev,
                               struct sk_buff *msg, u32 portid, u32 seq,
-                              int flags, bool split, long *split_start,
-                              long *band_start, long *chan_start)
+                              int flags, struct nl80211_dump_wiphy_state *state)
 {
         void *hdr;
         struct nlattr *nl_bands, *nl_band;
@@ -1165,19 +1131,14 @@ static int nl80211_send_wiphy(struct cfg80211_registered_device *dev,
         int i;
         const struct ieee80211_txrx_stypes *mgmt_stypes =
                                 dev->wiphy.mgmt_stypes;
-        long start = 0, start_chan = 0, start_band = 0;
         u32 features;
 
         hdr = nl80211hdr_put(msg, portid, seq, flags, NL80211_CMD_NEW_WIPHY);
         if (!hdr)
                 return -ENOBUFS;
 
-        /* allow always using the variables */
-        if (!split) {
-                split_start = &start;
-                band_start = &start_band;
-                chan_start = &start_chan;
-        }
+        if (WARN_ON(!state))
+                return -EINVAL;
 
         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, dev->wiphy_idx) ||
             nla_put_string(msg, NL80211_ATTR_WIPHY_NAME,
@@ -1186,7 +1147,7 @@ static int nl80211_send_wiphy(struct cfg80211_registered_device *dev,
                         cfg80211_rdev_list_generation))
                 goto nla_put_failure;
 
-        switch (*split_start) {
+        switch (state->split_start) {
         case 0:
                 if (nla_put_u8(msg, NL80211_ATTR_WIPHY_RETRY_SHORT,
                                dev->wiphy.retry_short) ||
@@ -1228,9 +1189,12 @@ static int nl80211_send_wiphy(struct cfg80211_registered_device *dev,
                 if ((dev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP) &&
                     nla_put_flag(msg, NL80211_ATTR_TDLS_EXTERNAL_SETUP))
                         goto nla_put_failure;
+                if ((dev->wiphy.flags & WIPHY_FLAG_SUPPORTS_5_10_MHZ) &&
+                    nla_put_flag(msg, WIPHY_FLAG_SUPPORTS_5_10_MHZ))
+                        goto nla_put_failure;
 
-                (*split_start)++;
-                if (split)
+                state->split_start++;
+                if (state->split)
                         break;
         case 1:
                 if (nla_put(msg, NL80211_ATTR_CIPHER_SUITES,
@@ -1274,22 +1238,23 @@ static int nl80211_send_wiphy(struct cfg80211_registered_device *dev,
                         }
                 }
 
-                (*split_start)++;
-                if (split)
+                state->split_start++;
+                if (state->split)
                         break;
         case 2:
                 if (nl80211_put_iftypes(msg, NL80211_ATTR_SUPPORTED_IFTYPES,
                                         dev->wiphy.interface_modes))
                                 goto nla_put_failure;
-                (*split_start)++;
-                if (split)
+                state->split_start++;
+                if (state->split)
                         break;
         case 3:
                 nl_bands = nla_nest_start(msg, NL80211_ATTR_WIPHY_BANDS);
                 if (!nl_bands)
                         goto nla_put_failure;
 
-                for (band = *band_start; band < IEEE80211_NUM_BANDS; band++) {
+                for (band = state->band_start;
+                     band < IEEE80211_NUM_BANDS; band++) {
                         struct ieee80211_supported_band *sband;
 
                         sband = dev->wiphy.bands[band];
@@ -1301,12 +1266,12 @@ static int nl80211_send_wiphy(struct cfg80211_registered_device *dev,
                         if (!nl_band)
                                 goto nla_put_failure;
 
-                        switch (*chan_start) {
+                        switch (state->chan_start) {
                         case 0:
                                 if (nl80211_send_band_rateinfo(msg, sband))
                                         goto nla_put_failure;
-                                (*chan_start)++;
-                                if (split)
+                                state->chan_start++;
+                                if (state->split)
                                         break;
                         default:
                                 /* add frequencies */
@@ -1315,7 +1280,7 @@ static int nl80211_send_wiphy(struct cfg80211_registered_device *dev,
                                 if (!nl_freqs)
                                         goto nla_put_failure;
 
-                                for (i = *chan_start - 1;
+                                for (i = state->chan_start - 1;
                                      i < sband->n_channels;
                                      i++) {
                                         nl_freq = nla_nest_start(msg, i);
@@ -1324,26 +1289,27 @@ static int nl80211_send_wiphy(struct cfg80211_registered_device *dev,
 
                                         chan = &sband->channels[i];
 
-                                        if (nl80211_msg_put_channel(msg, chan,
-                                                                    split))
+                                        if (nl80211_msg_put_channel(
+                                                        msg, chan,
+                                                        state->split))
                                                 goto nla_put_failure;
 
                                         nla_nest_end(msg, nl_freq);
-                                        if (split)
+                                        if (state->split)
                                                 break;
                                 }
                                 if (i < sband->n_channels)
-                                        *chan_start = i + 2;
+                                        state->chan_start = i + 2;
                                 else
-                                        *chan_start = 0;
+                                        state->chan_start = 0;
                                 nla_nest_end(msg, nl_freqs);
                         }
 
                         nla_nest_end(msg, nl_band);
 
-                        if (split) {
+                        if (state->split) {
                                 /* start again here */
-                                if (*chan_start)
+                                if (state->chan_start)
                                         band--;
                                 break;
                         }
@@ -1351,14 +1317,14 @@ static int nl80211_send_wiphy(struct cfg80211_registered_device *dev,
                 nla_nest_end(msg, nl_bands);
 
                 if (band < IEEE80211_NUM_BANDS)
-                        *band_start = band + 1;
+                        state->band_start = band + 1;
                 else
-                        *band_start = 0;
+                        state->band_start = 0;
 
                 /* if bands & channels are done, continue outside */
-                if (*band_start == 0 && *chan_start == 0)
-                        (*split_start)++;
-                if (split)
+                if (state->band_start == 0 && state->chan_start == 0)
+                        state->split_start++;
+                if (state->split)
                         break;
         case 4:
                 nl_cmds = nla_nest_start(msg, NL80211_ATTR_SUPPORTED_COMMANDS);
@@ -1424,7 +1390,7 @@ static int nl80211_send_wiphy(struct cfg80211_registered_device *dev,
                 }
                 CMD(start_p2p_device, START_P2P_DEVICE);
                 CMD(set_mcast_rate, SET_MCAST_RATE);
-                if (split) {
+                if (state->split) {
                         CMD(crit_proto_start, CRIT_PROTOCOL_START);
                         CMD(crit_proto_stop, CRIT_PROTOCOL_STOP);
                 }
@@ -1448,8 +1414,8 @@ static int nl80211_send_wiphy(struct cfg80211_registered_device *dev,
                 }
 
                 nla_nest_end(msg, nl_cmds);
-                (*split_start)++;
-                if (split)
+                state->split_start++;
+                if (state->split)
                         break;
         case 5:
                 if (dev->ops->remain_on_channel &&
@@ -1465,29 +1431,30 @@ static int nl80211_send_wiphy(struct cfg80211_registered_device *dev,
 
                 if (nl80211_send_mgmt_stypes(msg, mgmt_stypes))
                         goto nla_put_failure;
-                (*split_start)++;
-                if (split)
+                state->split_start++;
+                if (state->split)
                         break;
         case 6:
 #ifdef CONFIG_PM
-                if (nl80211_send_wowlan(msg, dev, split))
+                if (nl80211_send_wowlan(msg, dev, state->split))
                         goto nla_put_failure;
-                (*split_start)++;
-                if (split)
+                state->split_start++;
+                if (state->split)
                         break;
 #else
-                (*split_start)++;
+                state->split_start++;
 #endif
         case 7:
                 if (nl80211_put_iftypes(msg, NL80211_ATTR_SOFTWARE_IFTYPES,
                                         dev->wiphy.software_iftypes))
                         goto nla_put_failure;
 
-                if (nl80211_put_iface_combinations(&dev->wiphy, msg, split))
+                if (nl80211_put_iface_combinations(&dev->wiphy, msg,
+                                                   state->split))
                         goto nla_put_failure;
 
-                (*split_start)++;
-                if (split)
+                state->split_start++;
+                if (state->split)
                         break;
         case 8:
                 if ((dev->wiphy.flags & WIPHY_FLAG_HAVE_AP_SME) &&
@@ -1501,7 +1468,7 @@ static int nl80211_send_wiphy(struct cfg80211_registered_device *dev,
                  * dump is split, otherwise it makes it too big. Therefore
                  * only advertise it in that case.
                  */
-                if (split)
+                if (state->split)
                         features |= NL80211_FEATURE_ADVERTISE_CHAN_LIMITS;
                 if (nla_put_u32(msg, NL80211_ATTR_FEATURE_FLAGS, features))
                         goto nla_put_failure;
@@ -1528,7 +1495,7 @@ static int nl80211_send_wiphy(struct cfg80211_registered_device *dev,
                  * case we'll continue with more data in the next round,
                  * but break unconditionally so unsplit data stops here.
                  */
-                (*split_start)++;
+                state->split_start++;
                 break;
         case 9:
                 if (dev->wiphy.extended_capabilities &&
@@ -1547,7 +1514,7 @@ static int nl80211_send_wiphy(struct cfg80211_registered_device *dev,
                         goto nla_put_failure;
 
                 /* done */
-                *split_start = 0;
+                state->split_start = 0;
                 break;
         }
         return genlmsg_end(msg, hdr);
@@ -1557,66 +1524,78 @@ static int nl80211_send_wiphy(struct cfg80211_registered_device *dev,
         return -EMSGSIZE;
 }
 
+static int nl80211_dump_wiphy_parse(struct sk_buff *skb,
+                                    struct netlink_callback *cb,
+                                    struct nl80211_dump_wiphy_state *state)
+{
+        struct nlattr **tb = nl80211_fam.attrbuf;
+        int ret = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
+                              tb, nl80211_fam.maxattr, nl80211_policy);
+        /* ignore parse errors for backward compatibility */
+        if (ret)
+                return 0;
+
+        state->split = tb[NL80211_ATTR_SPLIT_WIPHY_DUMP];
+        if (tb[NL80211_ATTR_WIPHY])
+                state->filter_wiphy = nla_get_u32(tb[NL80211_ATTR_WIPHY]);
+        if (tb[NL80211_ATTR_WDEV])
+                state->filter_wiphy = nla_get_u64(tb[NL80211_ATTR_WDEV]) >> 32;
+        if (tb[NL80211_ATTR_IFINDEX]) {
+                struct net_device *netdev;
+                struct cfg80211_registered_device *rdev;
+                int ifidx = nla_get_u32(tb[NL80211_ATTR_IFINDEX]);
+
+                netdev = dev_get_by_index(sock_net(skb->sk), ifidx);
+                if (!netdev)
+                        return -ENODEV;
+                if (netdev->ieee80211_ptr) {
+                        rdev = wiphy_to_dev(
+                                netdev->ieee80211_ptr->wiphy);
+                        state->filter_wiphy = rdev->wiphy_idx;
+                }
+                dev_put(netdev);
+        }
+
+        return 0;
+}
+
 static int nl80211_dump_wiphy(struct sk_buff *skb, struct netlink_callback *cb)
 {
         int idx = 0, ret;
-        int start = cb->args[0];
+        struct nl80211_dump_wiphy_state *state = (void *)cb->args[0];
         struct cfg80211_registered_device *dev;
-        s64 filter_wiphy = -1;
-        bool split = false;
-        struct nlattr **tb;
-        int res;
 
-        /* will be zeroed in nlmsg_parse() */
-        tb = kmalloc(sizeof(*tb) * (NL80211_ATTR_MAX + 1), GFP_KERNEL);
-        if (!tb)
-                return -ENOMEM;
-
-        mutex_lock(&cfg80211_mutex);
-        res = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
-                          tb, NL80211_ATTR_MAX, nl80211_policy);
-        if (res == 0) {
-                split = tb[NL80211_ATTR_SPLIT_WIPHY_DUMP];
-                if (tb[NL80211_ATTR_WIPHY])
-                        filter_wiphy = nla_get_u32(tb[NL80211_ATTR_WIPHY]);
-                if (tb[NL80211_ATTR_WDEV])
-                        filter_wiphy = nla_get_u64(tb[NL80211_ATTR_WDEV]) >> 32;
-                if (tb[NL80211_ATTR_IFINDEX]) {
-                        struct net_device *netdev;
-                        int ifidx = nla_get_u32(tb[NL80211_ATTR_IFINDEX]);
-
-                        netdev = dev_get_by_index(sock_net(skb->sk), ifidx);
-                        if (!netdev) {
-                                mutex_unlock(&cfg80211_mutex);
-                                kfree(tb);
-                                return -ENODEV;
-                        }
-                        if (netdev->ieee80211_ptr) {
-                                dev = wiphy_to_dev(
-                                        netdev->ieee80211_ptr->wiphy);
-                                filter_wiphy = dev->wiphy_idx;
-                        }
-                        dev_put(netdev);
+        rtnl_lock();
+        if (!state) {
+                state = kzalloc(sizeof(*state), GFP_KERNEL);
+                if (!state) {
+                        rtnl_unlock();
+                        return -ENOMEM;
+                }
+                state->filter_wiphy = -1;
+                ret = nl80211_dump_wiphy_parse(skb, cb, state);
+                if (ret) {
+                        kfree(state);
+                        rtnl_unlock();
+                        return ret;
                 }
+                cb->args[0] = (long)state;
         }
-        kfree(tb);
 
         list_for_each_entry(dev, &cfg80211_rdev_list, list) {
                 if (!net_eq(wiphy_net(&dev->wiphy), sock_net(skb->sk)))
                         continue;
-                if (++idx <= start)
+                if (++idx <= state->start)
                         continue;
-                if (filter_wiphy != -1 && dev->wiphy_idx != filter_wiphy)
+                if (state->filter_wiphy != -1 &&
+                    state->filter_wiphy != dev->wiphy_idx)
                         continue;
                 /* attempt to fit multiple wiphy data chunks into the skb */
                 do {
                         ret = nl80211_send_wiphy(dev, skb,
                                                  NETLINK_CB(cb->skb).portid,
                                                  cb->nlh->nlmsg_seq,
-                                                 NLM_F_MULTI,
-                                                 split, &cb->args[1],
-                                                 &cb->args[2],
-                                                 &cb->args[3]);
+                                                 NLM_F_MULTI, state);
                         if (ret < 0) {
                                 /*
                                  * If sending the wiphy data didn't fit (ENOBUFS
@@ -1635,33 +1614,40 @@ static int nl80211_dump_wiphy(struct sk_buff *skb, struct netlink_callback *cb)
                                     !skb->len &&
                                     cb->min_dump_alloc < 4096) {
                                         cb->min_dump_alloc = 4096;
-                                        mutex_unlock(&cfg80211_mutex);
+                                        rtnl_unlock();
                                         return 1;
                                 }
                                 idx--;
                                 break;
                         }
-                } while (cb->args[1] > 0);
+                } while (state->split_start > 0);
                 break;
         }
-        mutex_unlock(&cfg80211_mutex);
+        rtnl_unlock();
 
-        cb->args[0] = idx;
+        state->start = idx;
 
         return skb->len;
 }
 
+static int nl80211_dump_wiphy_done(struct netlink_callback *cb)
+{
+        kfree((void *)cb->args[0]);
+        return 0;
+}
+
 static int nl80211_get_wiphy(struct sk_buff *skb, struct genl_info *info)
 {
         struct sk_buff *msg;
         struct cfg80211_registered_device *dev = info->user_ptr[0];
+        struct nl80211_dump_wiphy_state state = {};
 
         msg = nlmsg_new(4096, GFP_KERNEL);
         if (!msg)
                 return -ENOMEM;
 
         if (nl80211_send_wiphy(dev, msg, info->snd_portid, info->snd_seq, 0,
-                               false, NULL, NULL, NULL) < 0) {
+                               &state) < 0) {
                 nlmsg_free(msg);
                 return -ENOBUFS;
         }
@@ -1778,6 +1764,11 @@ static int nl80211_parse_chandef(struct cfg80211_registered_device *rdev,
                                      IEEE80211_CHAN_DISABLED))
                 return -EINVAL;
 
+        if ((chandef->width == NL80211_CHAN_WIDTH_5 ||
+             chandef->width == NL80211_CHAN_WIDTH_10) &&
+            !(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_5_10_MHZ))
+                return -EINVAL;
+
         return 0;
 }
 
@@ -1799,7 +1790,6 @@ static int __nl80211_set_channel(struct cfg80211_registered_device *rdev,
         if (result)
                 return result;
 
-        mutex_lock(&rdev->devlist_mtx);
         switch (iftype) {
         case NL80211_IFTYPE_AP:
         case NL80211_IFTYPE_P2P_GO:
@@ -1823,7 +1813,6 @@ static int __nl80211_set_channel(struct cfg80211_registered_device *rdev,
         default:
                 result = -EINVAL;
         }
-        mutex_unlock(&rdev->devlist_mtx);
 
         return result;
 }
@@ -1872,6 +1861,8 @@ static int nl80211_set_wiphy(struct sk_buff *skb, struct genl_info *info)
         u32 frag_threshold = 0, rts_threshold = 0;
         u8 coverage_class = 0;
 
+        ASSERT_RTNL();
+
         /*
          * Try to find the wiphy and netdev. Normally this
          * function shouldn't need the netdev, but this is
@@ -1881,31 +1872,25 @@ static int nl80211_set_wiphy(struct sk_buff *skb, struct genl_info *info)
          * also passed a netdev to set_wiphy, so that it is
          * possible to let that go to the right netdev!
          */
-        mutex_lock(&cfg80211_mutex);
 
         if (info->attrs[NL80211_ATTR_IFINDEX]) {
                 int ifindex = nla_get_u32(info->attrs[NL80211_ATTR_IFINDEX]);
 
                 netdev = dev_get_by_index(genl_info_net(info), ifindex);
-                if (netdev && netdev->ieee80211_ptr) {
+                if (netdev && netdev->ieee80211_ptr)
                         rdev = wiphy_to_dev(netdev->ieee80211_ptr->wiphy);
-                        mutex_lock(&rdev->mtx);
-                } else
+                else
                         netdev = NULL;
         }
 
         if (!netdev) {
                 rdev = __cfg80211_rdev_from_attrs(genl_info_net(info),
                                                   info->attrs);
-                if (IS_ERR(rdev)) {
-                        mutex_unlock(&cfg80211_mutex);
+                if (IS_ERR(rdev))
                         return PTR_ERR(rdev);
-                }
                 wdev = NULL;
                 netdev = NULL;
                 result = 0;
-
-                mutex_lock(&rdev->mtx);
         } else
                 wdev = netdev->ieee80211_ptr;
 
@@ -1918,8 +1903,6 @@ static int nl80211_set_wiphy(struct sk_buff *skb, struct genl_info *info)
                 result = cfg80211_dev_rename(
                         rdev, nla_data(info->attrs[NL80211_ATTR_WIPHY_NAME]));
 
-        mutex_unlock(&cfg80211_mutex);
-
         if (result)
                 goto bad_res;
 
@@ -2126,7 +2109,6 @@ static int nl80211_set_wiphy(struct sk_buff *skb, struct genl_info *info)
         }
 
  bad_res:
-        mutex_unlock(&rdev->mtx);
         if (netdev)
                 dev_put(netdev);
         return result;
@@ -2224,7 +2206,7 @@ static int nl80211_dump_interface(struct sk_buff *skb, struct netlink_callback *
         struct cfg80211_registered_device *rdev;
         struct wireless_dev *wdev;
 
-        mutex_lock(&cfg80211_mutex);
+        rtnl_lock();
         list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
                 if (!net_eq(wiphy_net(&rdev->wiphy), sock_net(skb->sk)))
                         continue;
@@ -2234,7 +2216,6 @@ static int nl80211_dump_interface(struct sk_buff *skb, struct netlink_callback *
                 }
                 if_idx = 0;
 
-                mutex_lock(&rdev->devlist_mtx);
                 list_for_each_entry(wdev, &rdev->wdev_list, list) {
                         if (if_idx < if_start) {
                                 if_idx++;
@@ -2243,17 +2224,15 @@ static int nl80211_dump_interface(struct sk_buff *skb, struct netlink_callback *
                         if (nl80211_send_iface(skb, NETLINK_CB(cb->skb).portid,
                                                cb->nlh->nlmsg_seq, NLM_F_MULTI,
                                                rdev, wdev) < 0) {
-                                mutex_unlock(&rdev->devlist_mtx);
                                 goto out;
                         }
                         if_idx++;
                 }
-                mutex_unlock(&rdev->devlist_mtx);
 
                 wp_idx++;
         }
  out:
-        mutex_unlock(&cfg80211_mutex);
+        rtnl_unlock();
 
         cb->args[0] = wp_idx;
         cb->args[1] = if_idx;
@@ -2286,6 +2265,7 @@ static const struct nla_policy mntr_flags_policy[NL80211_MNTR_FLAG_MAX + 1] = {
         [NL80211_MNTR_FLAG_CONTROL] = { .type = NLA_FLAG },
         [NL80211_MNTR_FLAG_OTHER_BSS] = { .type = NLA_FLAG },
         [NL80211_MNTR_FLAG_COOK_FRAMES] = { .type = NLA_FLAG },
+        [NL80211_MNTR_FLAG_ACTIVE] = { .type = NLA_FLAG },
 };
 
 static int parse_monitor_flags(struct nlattr *nla, u32 *mntrflags)
@@ -2397,6 +2377,10 @@ static int nl80211_set_interface(struct sk_buff *skb, struct genl_info *info)
                 change = true;
         }
 
+        if (flags && (*flags & NL80211_MNTR_FLAG_ACTIVE) &&
+            !(rdev->wiphy.features & NL80211_FEATURE_ACTIVE_MONITOR))
+                return -EOPNOTSUPP;
+
         if (change)
                 err = cfg80211_change_iface(rdev, dev, ntype, flags, &params);
         else
@@ -2454,6 +2438,11 @@ static int nl80211_new_interface(struct sk_buff *skb, struct genl_info *info)
         err = parse_monitor_flags(type == NL80211_IFTYPE_MONITOR ?
                                   info->attrs[NL80211_ATTR_MNTR_FLAGS] : NULL,
                                   &flags);
+
+        if (!err && (flags & NL80211_MNTR_FLAG_ACTIVE) &&
+            !(rdev->wiphy.features & NL80211_FEATURE_ACTIVE_MONITOR))
+                return -EOPNOTSUPP;
+
         wdev = rdev_add_virtual_intf(rdev,
                                 nla_data(info->attrs[NL80211_ATTR_IFNAME]),
                                 type, err ? NULL : &flags, &params);
@@ -2486,11 +2475,9 @@ static int nl80211_new_interface(struct sk_buff *skb, struct genl_info *info)
                 INIT_LIST_HEAD(&wdev->mgmt_registrations);
                 spin_lock_init(&wdev->mgmt_registrations_lock);
 
-                mutex_lock(&rdev->devlist_mtx);
                 wdev->identifier = ++rdev->wdev_id;
                 list_add_rcu(&wdev->list, &rdev->wdev_list);
                 rdev->devlist_generation++;
-                mutex_unlock(&rdev->devlist_mtx);
                 break;
         default:
                 break;
@@ -2933,61 +2920,58 @@ static int nl80211_set_mac_acl(struct sk_buff *skb, struct genl_info *info)
         return err;
 }
 
-static int nl80211_parse_beacon(struct genl_info *info,
+static int nl80211_parse_beacon(struct nlattr *attrs[],
                                 struct cfg80211_beacon_data *bcn)
 {
         bool haveinfo = false;
 
-        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]))
+        if (!is_valid_ie_attr(attrs[NL80211_ATTR_BEACON_TAIL]) ||
+            !is_valid_ie_attr(attrs[NL80211_ATTR_IE]) ||
+            !is_valid_ie_attr(attrs[NL80211_ATTR_IE_PROBE_RESP]) ||
+            !is_valid_ie_attr(attrs[NL80211_ATTR_IE_ASSOC_RESP]))
                 return -EINVAL;
 
         memset(bcn, 0, sizeof(*bcn));
 
-        if (info->attrs[NL80211_ATTR_BEACON_HEAD]) {
-                bcn->head = nla_data(info->attrs[NL80211_ATTR_BEACON_HEAD]);
-                bcn->head_len = nla_len(info->attrs[NL80211_ATTR_BEACON_HEAD]);
+        if (attrs[NL80211_ATTR_BEACON_HEAD]) {
+                bcn->head = nla_data(attrs[NL80211_ATTR_BEACON_HEAD]);
+                bcn->head_len = nla_len(attrs[NL80211_ATTR_BEACON_HEAD]);
                 if (!bcn->head_len)
                         return -EINVAL;
                 haveinfo = true;
         }
 
-        if (info->attrs[NL80211_ATTR_BEACON_TAIL]) {
-                bcn->tail = nla_data(info->attrs[NL80211_ATTR_BEACON_TAIL]);
-                bcn->tail_len =
-                    nla_len(info->attrs[NL80211_ATTR_BEACON_TAIL]);
+        if (attrs[NL80211_ATTR_BEACON_TAIL]) {
+                bcn->tail = nla_data(attrs[NL80211_ATTR_BEACON_TAIL]);
+                bcn->tail_len = nla_len(attrs[NL80211_ATTR_BEACON_TAIL]);
                 haveinfo = true;
         }
 
         if (!haveinfo)
                 return -EINVAL;
 
-        if (info->attrs[NL80211_ATTR_IE]) {
-                bcn->beacon_ies = nla_data(info->attrs[NL80211_ATTR_IE]);
-                bcn->beacon_ies_len = nla_len(info->attrs[NL80211_ATTR_IE]);
+        if (attrs[NL80211_ATTR_IE]) {
+                bcn->beacon_ies = nla_data(attrs[NL80211_ATTR_IE]);
+                bcn->beacon_ies_len = nla_len(attrs[NL80211_ATTR_IE]);
         }
 
-        if (info->attrs[NL80211_ATTR_IE_PROBE_RESP]) {
+        if (attrs[NL80211_ATTR_IE_PROBE_RESP]) {
                 bcn->proberesp_ies =
-                        nla_data(info->attrs[NL80211_ATTR_IE_PROBE_RESP]);
+                        nla_data(attrs[NL80211_ATTR_IE_PROBE_RESP]);
                 bcn->proberesp_ies_len =
-                        nla_len(info->attrs[NL80211_ATTR_IE_PROBE_RESP]);
+                        nla_len(attrs[NL80211_ATTR_IE_PROBE_RESP]);
         }
 
-        if (info->attrs[NL80211_ATTR_IE_ASSOC_RESP]) {
+        if (attrs[NL80211_ATTR_IE_ASSOC_RESP]) {
                 bcn->assocresp_ies =
-                        nla_data(info->attrs[NL80211_ATTR_IE_ASSOC_RESP]);
+                        nla_data(attrs[NL80211_ATTR_IE_ASSOC_RESP]);
                 bcn->assocresp_ies_len =
-                        nla_len(info->attrs[NL80211_ATTR_IE_ASSOC_RESP]);
+                        nla_len(attrs[NL80211_ATTR_IE_ASSOC_RESP]);
         }
 
-        if (info->attrs[NL80211_ATTR_PROBE_RESP]) {
-                bcn->probe_resp =
-                        nla_data(info->attrs[NL80211_ATTR_PROBE_RESP]);
-                bcn->probe_resp_len =
-                        nla_len(info->attrs[NL80211_ATTR_PROBE_RESP]);
+        if (attrs[NL80211_ATTR_PROBE_RESP]) {
+                bcn->probe_resp = nla_data(attrs[NL80211_ATTR_PROBE_RESP]);
+                bcn->probe_resp_len = nla_len(attrs[NL80211_ATTR_PROBE_RESP]);
         }
 
         return 0;
@@ -2999,8 +2983,6 @@ static bool nl80211_get_ap_channel(struct cfg80211_registered_device *rdev,
         struct wireless_dev *wdev;
         bool ret = false;
 
-        mutex_lock(&rdev->devlist_mtx);
-
         list_for_each_entry(wdev, &rdev->wdev_list, list) {
                 if (wdev->iftype != NL80211_IFTYPE_AP &&
                     wdev->iftype != NL80211_IFTYPE_P2P_GO)
@@ -3014,8 +2996,6 @@ static bool nl80211_get_ap_channel(struct cfg80211_registered_device *rdev,
                 break;
         }
 
-        mutex_unlock(&rdev->devlist_mtx);
-
         return ret;
 }
 
@@ -3070,7 +3050,7 @@ static int nl80211_start_ap(struct sk_buff *skb, struct genl_info *info)
             !info->attrs[NL80211_ATTR_BEACON_HEAD])
                 return -EINVAL;
 
-        err = nl80211_parse_beacon(info, &params.beacon);
+        err = nl80211_parse_beacon(info->attrs, &params.beacon);
         if (err)
                 return err;
 
@@ -3177,13 +3157,10 @@ static int nl80211_start_ap(struct sk_buff *skb, struct genl_info *info)
                 params.radar_required = true;
         }
 
-        mutex_lock(&rdev->devlist_mtx);
         err = cfg80211_can_use_iftype_chan(rdev, wdev, wdev->iftype,
                                            params.chandef.chan,
                                            CHAN_MODE_SHARED,
                                            radar_detect_width);
-        mutex_unlock(&rdev->devlist_mtx);
-
         if (err)
                 return err;
 
@@ -3225,7 +3202,7 @@ static int nl80211_set_beacon(struct sk_buff *skb, struct genl_info *info)
         if (!wdev->beacon_interval)
                 return -EINVAL;
 
-        err = nl80211_parse_beacon(info, &params);
+        err = nl80211_parse_beacon(info->attrs, &params);
         if (err)
                 return err;
 
@@ -3383,6 +3360,32 @@ static bool nl80211_put_sta_rate(struct sk_buff *msg, struct rate_info *info,
         return true;
 }
 
+static bool nl80211_put_signal(struct sk_buff *msg, u8 mask, s8 *signal,
+                               int id)
+{
+        void *attr;
+        int i = 0;
+
+        if (!mask)
+                return true;
+
+        attr = nla_nest_start(msg, id);
+        if (!attr)
+                return false;
+
+        for (i = 0; i < IEEE80211_MAX_CHAINS; i++) {
+                if (!(mask & BIT(i)))
+                        continue;
+
+                if (nla_put_u8(msg, i, signal[i]))
+                        return false;
+        }
+
+        nla_nest_end(msg, attr);
+
+        return true;
+}
+
 static int nl80211_send_station(struct sk_buff *msg, u32 portid, u32 seq,
                                 int flags,
                                 struct cfg80211_registered_device *rdev,
@@ -3454,6 +3457,18 @@ static int nl80211_send_station(struct sk_buff *msg, u32 portid, u32 seq,
         default:
                 break;
         }
+        if (sinfo->filled & STATION_INFO_CHAIN_SIGNAL) {
+                if (!nl80211_put_signal(msg, sinfo->chains,
+                                        sinfo->chain_signal,
+                                        NL80211_STA_INFO_CHAIN_SIGNAL))
+                        goto nla_put_failure;
+        }
+        if (sinfo->filled & STATION_INFO_CHAIN_SIGNAL_AVG) {
+                if (!nl80211_put_signal(msg, sinfo->chains,
+                                        sinfo->chain_signal_avg,
+                                        NL80211_STA_INFO_CHAIN_SIGNAL_AVG))
+                        goto nla_put_failure;
+        }
         if (sinfo->filled & STATION_INFO_TX_BITRATE) {
                 if (!nl80211_put_sta_rate(msg, &sinfo->txrate,
                                           NL80211_STA_INFO_TX_BITRATE))
@@ -3841,6 +3856,8 @@ static int nl80211_set_station_tdls(struct genl_info *info,
                                     struct station_parameters *params)
 {
         /* Dummy STA entry gets updated once the peer capabilities are known */
+        if (info->attrs[NL80211_ATTR_PEER_AID])
+                params->aid = nla_get_u16(info->attrs[NL80211_ATTR_PEER_AID]);
         if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
                 params->ht_capa =
                         nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
@@ -3981,7 +3998,8 @@ static int nl80211_new_station(struct sk_buff *skb, struct genl_info *info)
         if (!info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES])
                 return -EINVAL;
 
-        if (!info->attrs[NL80211_ATTR_STA_AID])
+        if (!info->attrs[NL80211_ATTR_STA_AID] &&
+            !info->attrs[NL80211_ATTR_PEER_AID])
                 return -EINVAL;
 
         mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
@@ -3992,7 +4010,10 @@ static int nl80211_new_station(struct sk_buff *skb, struct genl_info *info)
         params.listen_interval =
                 nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]);
 
-        params.aid = nla_get_u16(info->attrs[NL80211_ATTR_STA_AID]);
+        if (info->attrs[NL80211_ATTR_PEER_AID])
+                params.aid = nla_get_u16(info->attrs[NL80211_ATTR_PEER_AID]);
+        else
+                params.aid = nla_get_u16(info->attrs[NL80211_ATTR_STA_AID]);
         if (!params.aid || params.aid > IEEE80211_MAX_AID)
                 return -EINVAL;
 
@@ -4044,7 +4065,8 @@ static int nl80211_new_station(struct sk_buff *skb, struct genl_info *info)
                         params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
 
                 /* TDLS peers cannot be added */
-                if (params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER))
+                if ((params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) ||
+                    info->attrs[NL80211_ATTR_PEER_AID])
                         return -EINVAL;
                 /* but don't bother the driver with it */
                 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
@@ -4070,7 +4092,8 @@ static int nl80211_new_station(struct sk_buff *skb, struct genl_info *info)
                 if (params.sta_flags_mask & BIT(NL80211_STA_FLAG_ASSOCIATED))
                         return -EINVAL;
                 /* TDLS peers cannot be added */
-                if (params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER))
+                if ((params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) ||
+                    info->attrs[NL80211_ATTR_PEER_AID])
                         return -EINVAL;
                 break;
         case NL80211_IFTYPE_STATION:
@@ -4592,7 +4615,9 @@ static int nl80211_get_mesh_config(struct sk_buff *skb,
             nla_put_u32(msg, NL80211_MESHCONF_POWER_MODE,
                         cur_params.power_mode) ||
             nla_put_u16(msg, NL80211_MESHCONF_AWAKE_WINDOW,
-                        cur_params.dot11MeshAwakeWindowDuration))
+                        cur_params.dot11MeshAwakeWindowDuration) ||
+            nla_put_u32(msg, NL80211_MESHCONF_PLINK_TIMEOUT,
+                        cur_params.plink_timeout))
                 goto nla_put_failure;
         nla_nest_end(msg, pinfoattr);
         genlmsg_end(msg, hdr);
@@ -4633,6 +4658,7 @@ static const struct nla_policy nl80211_meshconf_params_policy[NL80211_MESHCONF_A
         [NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL] = { .type = NLA_U16 },
         [NL80211_MESHCONF_POWER_MODE] = { .type = NLA_U32 },
         [NL80211_MESHCONF_AWAKE_WINDOW] = { .type = NLA_U16 },
+        [NL80211_MESHCONF_PLINK_TIMEOUT] = { .type = NLA_U32 },
 };
 
 static const struct nla_policy
@@ -4641,6 +4667,7 @@ static const struct nla_policy
         [NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL] = { .type = NLA_U8 },
         [NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC] = { .type = NLA_U8 },
         [NL80211_MESH_SETUP_USERSPACE_AUTH] = { .type = NLA_FLAG },
+        [NL80211_MESH_SETUP_AUTH_PROTOCOL] = { .type = NLA_U8 },
         [NL80211_MESH_SETUP_USERSPACE_MPM] = { .type = NLA_FLAG },
         [NL80211_MESH_SETUP_IE] = { .type = NLA_BINARY,
                                     .len = IEEE80211_MAX_DATA_LEN },
@@ -4769,6 +4796,9 @@ do {									    \
         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshAwakeWindowDuration,
                                   0, 65535, mask,
                                   NL80211_MESHCONF_AWAKE_WINDOW, nla_get_u16);
+        FILL_IN_MESH_PARAM_IF_SET(tb, cfg, plink_timeout, 1, 0xffffffff,
+                                  mask, NL80211_MESHCONF_PLINK_TIMEOUT,
+                                  nla_get_u32);
         if (mask_out)
                 *mask_out = mask;
 
@@ -4826,6 +4856,13 @@ static int nl80211_parse_mesh_setup(struct genl_info *info,
         if (setup->is_secure)
                 setup->user_mpm = true;
 
+        if (tb[NL80211_MESH_SETUP_AUTH_PROTOCOL]) {
+                if (!setup->user_mpm)
+                        return -EINVAL;
+                setup->auth_id =
+                        nla_get_u8(tb[NL80211_MESH_SETUP_AUTH_PROTOCOL]);
+        }
+
         return 0;
 }
 
@@ -4868,18 +4905,13 @@ static int nl80211_get_reg(struct sk_buff *skb, struct genl_info *info)
         void *hdr = NULL;
         struct nlattr *nl_reg_rules;
         unsigned int i;
-        int err = -EINVAL;
-
-        mutex_lock(&cfg80211_mutex);
 
         if (!cfg80211_regdomain)
-                goto out;
+                return -EINVAL;
 
         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
-        if (!msg) {
-                err = -ENOBUFS;
-                goto out;
-        }
+        if (!msg)
+                return -ENOBUFS;
 
         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
                              NL80211_CMD_GET_REG);
@@ -4938,8 +4970,7 @@ static int nl80211_get_reg(struct sk_buff *skb, struct genl_info *info)
         nla_nest_end(msg, nl_reg_rules);
 
         genlmsg_end(msg, hdr);
-        err = genlmsg_reply(msg, info);
-        goto out;
+        return genlmsg_reply(msg, info);
 
 nla_put_failure_rcu:
         rcu_read_unlock();
@@ -4947,10 +4978,7 @@ nla_put_failure:
         genlmsg_cancel(msg, hdr);
 put_failure:
         nlmsg_free(msg);
-        err = -EMSGSIZE;
-out:
-        mutex_unlock(&cfg80211_mutex);
-        return err;
+        return -EMSGSIZE;
 }
 
 static int nl80211_set_reg(struct sk_buff *skb, struct genl_info *info)
@@ -5016,12 +5044,9 @@ static int nl80211_set_reg(struct sk_buff *skb, struct genl_info *info)
                 }
         }
 
-        mutex_lock(&cfg80211_mutex);
-
         r = set_regdom(rd);
         /* set_regdom took ownership */
         rd = NULL;
-        mutex_unlock(&cfg80211_mutex);
 
  bad_reg:
         kfree(rd);
@@ -5071,7 +5096,6 @@ static int nl80211_trigger_scan(struct sk_buff *skb, struct genl_info *info)
         if (!rdev->ops->scan)
                 return -EOPNOTSUPP;
 
-        mutex_lock(&rdev->sched_scan_mtx);
         if (rdev->scan_req) {
                 err = -EBUSY;
                 goto unlock;
@@ -5257,7 +5281,6 @@ static int nl80211_trigger_scan(struct sk_buff *skb, struct genl_info *info)
         }
 
  unlock:
-        mutex_unlock(&rdev->sched_scan_mtx);
         return err;
 }
 
@@ -5329,8 +5352,6 @@ static int nl80211_start_sched_scan(struct sk_buff *skb,
         if (ie_len > wiphy->max_sched_scan_ie_len)
                 return -EINVAL;
 
-        mutex_lock(&rdev->sched_scan_mtx);
-
         if (rdev->sched_scan_req) {
                 err = -EINPROGRESS;
                 goto out;
@@ -5498,7 +5519,6 @@ static int nl80211_start_sched_scan(struct sk_buff *skb,
 out_free:
         kfree(request);
 out:
-        mutex_unlock(&rdev->sched_scan_mtx);
         return err;
 }
 
@@ -5506,17 +5526,12 @@ static int nl80211_stop_sched_scan(struct sk_buff *skb,
                                    struct genl_info *info)
 {
         struct cfg80211_registered_device *rdev = info->user_ptr[0];
-        int err;
 
         if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN) ||
             !rdev->ops->sched_scan_stop)
                 return -EOPNOTSUPP;
 
-        mutex_lock(&rdev->sched_scan_mtx);
-        err = __cfg80211_stop_sched_scan(rdev, false);
-        mutex_unlock(&rdev->sched_scan_mtx);
-
-        return err;
+        return __cfg80211_stop_sched_scan(rdev, false);
 }
 
 static int nl80211_start_radar_detection(struct sk_buff *skb,
@@ -5548,12 +5563,11 @@ static int nl80211_start_radar_detection(struct sk_buff *skb,
         if (!rdev->ops->start_radar_detection)
                 return -EOPNOTSUPP;
 
-        mutex_lock(&rdev->devlist_mtx);
         err = cfg80211_can_use_iftype_chan(rdev, wdev, wdev->iftype,
                                            chandef.chan, CHAN_MODE_SHARED,
                                            BIT(chandef.width));
         if (err)
-                goto err_locked;
+                return err;
 
         err = rdev->ops->start_radar_detection(&rdev->wiphy, dev, &chandef);
         if (!err) {
@@ -5561,9 +5575,6 @@ static int nl80211_start_radar_detection(struct sk_buff *skb,
                 wdev->cac_started = true;
                 wdev->cac_start_time = jiffies;
         }
-err_locked:
-        mutex_unlock(&rdev->devlist_mtx);
-
         return err;
 }
 
@@ -5946,10 +5957,13 @@ static int nl80211_authenticate(struct sk_buff *skb, struct genl_info *info)
         if (local_state_change)
                 return 0;
 
-        return cfg80211_mlme_auth(rdev, dev, chan, auth_type, bssid,
-                                  ssid, ssid_len, ie, ie_len,
-                                  key.p.key, key.p.key_len, key.idx,
-                                  sae_data, sae_data_len);
+        wdev_lock(dev->ieee80211_ptr);
+        err = cfg80211_mlme_auth(rdev, dev, chan, auth_type, bssid,
+                                 ssid, ssid_len, ie, ie_len,
+                                 key.p.key, key.p.key_len, key.idx,
+                                 sae_data, sae_data_len);
+        wdev_unlock(dev->ieee80211_ptr);
+        return err;
 }
 
 static int nl80211_crypto_settings(struct cfg80211_registered_device *rdev,
@@ -6116,9 +6130,12 @@ static int nl80211_associate(struct sk_buff *skb, struct genl_info *info)
         }
 
         err = nl80211_crypto_settings(rdev, info, &req.crypto, 1);
-        if (!err)
+        if (!err) {
+                wdev_lock(dev->ieee80211_ptr);
                 err = cfg80211_mlme_assoc(rdev, dev, chan, bssid,
                                           ssid, ssid_len, &req);
+                wdev_unlock(dev->ieee80211_ptr);
+        }
 
         return err;
 }
@@ -6128,7 +6145,7 @@ static int nl80211_deauthenticate(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];
         const u8 *ie = NULL, *bssid;
-        int ie_len = 0;
+        int ie_len = 0, err;
         u16 reason_code;
         bool local_state_change;
 
@@ -6163,8 +6180,11 @@ static int nl80211_deauthenticate(struct sk_buff *skb, struct genl_info *info)
 
         local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
 
-        return cfg80211_mlme_deauth(rdev, dev, bssid, ie, ie_len, reason_code,
-                                    local_state_change);
+        wdev_lock(dev->ieee80211_ptr);
+        err = cfg80211_mlme_deauth(rdev, dev, bssid, ie, ie_len, reason_code,
+                                   local_state_change);
+        wdev_unlock(dev->ieee80211_ptr);
+        return err;
 }
 
 static int nl80211_disassociate(struct sk_buff *skb, struct genl_info *info)
@@ -6172,7 +6192,7 @@ static int nl80211_disassociate(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];
         const u8 *ie = NULL, *bssid;
-        int ie_len = 0;
+        int ie_len = 0, err;
         u16 reason_code;
         bool local_state_change;
 
@@ -6207,8 +6227,11 @@ static int nl80211_disassociate(struct sk_buff *skb, struct genl_info *info)
 
         local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
 
-        return cfg80211_mlme_disassoc(rdev, dev, bssid, ie, ie_len, reason_code,
-                                      local_state_change);
+        wdev_lock(dev->ieee80211_ptr);
+        err = cfg80211_mlme_disassoc(rdev, dev, bssid, ie, ie_len, reason_code,
+                                     local_state_change);
+        wdev_unlock(dev->ieee80211_ptr);
+        return err;
 }
 
 static bool
@@ -6295,11 +6318,16 @@ static int nl80211_join_ibss(struct sk_buff *skb, struct genl_info *info)
         if (!cfg80211_reg_can_beacon(&rdev->wiphy, &ibss.chandef))
                 return -EINVAL;
 
-        if (ibss.chandef.width > NL80211_CHAN_WIDTH_40)
-                return -EINVAL;
-        if (ibss.chandef.width != NL80211_CHAN_WIDTH_20_NOHT &&
-            !(rdev->wiphy.features & NL80211_FEATURE_HT_IBSS))
+        switch (ibss.chandef.width) {
+        case NL80211_CHAN_WIDTH_20_NOHT:
+                break;
+        case NL80211_CHAN_WIDTH_20:
+        case NL80211_CHAN_WIDTH_40:
+                if (rdev->wiphy.features & NL80211_FEATURE_HT_IBSS)
+                        break;
+        default:
                 return -EINVAL;
+        }
 
         ibss.channel_fixed = !!info->attrs[NL80211_ATTR_FREQ_FIXED];
         ibss.privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
@@ -6426,6 +6454,8 @@ static int nl80211_testmode_dump(struct sk_buff *skb,
         void *data = NULL;
         int data_len = 0;
 
+        rtnl_lock();
+
         if (cb->args[0]) {
                 /*
                  * 0 is a valid index, but not valid for args[0],
@@ -6437,18 +6467,16 @@ static int nl80211_testmode_dump(struct sk_buff *skb,
                                   nl80211_fam.attrbuf, nl80211_fam.maxattr,
                                   nl80211_policy);
                 if (err)
-                        return err;
+                        goto out_err;
 
-                mutex_lock(&cfg80211_mutex);
                 rdev = __cfg80211_rdev_from_attrs(sock_net(skb->sk),
                                                   nl80211_fam.attrbuf);
                 if (IS_ERR(rdev)) {
-                        mutex_unlock(&cfg80211_mutex);
-                        return PTR_ERR(rdev);
+                        err = PTR_ERR(rdev);
+                        goto out_err;
                 }
                 phy_idx = rdev->wiphy_idx;
                 rdev = NULL;
-                mutex_unlock(&cfg80211_mutex);
 
                 if (nl80211_fam.attrbuf[NL80211_ATTR_TESTDATA])
                         cb->args[1] =
@@ -6460,14 +6488,11 @@ static int nl80211_testmode_dump(struct sk_buff *skb,
                 data_len = nla_len((void *)cb->args[1]);
         }
 
-        mutex_lock(&cfg80211_mutex);
         rdev = cfg80211_rdev_by_wiphy_idx(phy_idx);
         if (!rdev) {
-                mutex_unlock(&cfg80211_mutex);
-                return -ENOENT;
+                err = -ENOENT;
+                goto out_err;
         }
-        cfg80211_lock_rdev(rdev);
-        mutex_unlock(&cfg80211_mutex);
 
         if (!rdev->ops->testmode_dump) {
                 err = -EOPNOTSUPP;
@@ -6508,7 +6533,7 @@ static int nl80211_testmode_dump(struct sk_buff *skb,
         /* see above */
         cb->args[0] = phy_idx + 1;
  out_err:
-        cfg80211_unlock_rdev(rdev);
+        rtnl_unlock();
         return err;
 }
 
@@ -6716,7 +6741,9 @@ static int nl80211_connect(struct sk_buff *skb, struct genl_info *info)
                        sizeof(connect.vht_capa));
         }
 
-        err = cfg80211_connect(rdev, dev, &connect, connkeys);
+        wdev_lock(dev->ieee80211_ptr);
+        err = cfg80211_connect(rdev, dev, &connect, connkeys, NULL);
+        wdev_unlock(dev->ieee80211_ptr);
         if (err)
                 kfree(connkeys);
         return err;
@@ -6727,6 +6754,7 @@ static int nl80211_disconnect(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];
         u16 reason;
+        int ret;
 
         if (!info->attrs[NL80211_ATTR_REASON_CODE])
                 reason = WLAN_REASON_DEAUTH_LEAVING;
@@ -6740,7 +6768,10 @@ static int nl80211_disconnect(struct sk_buff *skb, struct genl_info *info)
             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
                 return -EOPNOTSUPP;
 
-        return cfg80211_disconnect(rdev, dev, reason, true);
+        wdev_lock(dev->ieee80211_ptr);
+        ret = cfg80211_disconnect(rdev, dev, reason, true);
+        wdev_unlock(dev->ieee80211_ptr);
+        return ret;
 }
 
 static int nl80211_wiphy_netns(struct sk_buff *skb, struct genl_info *info)
@@ -7159,6 +7190,9 @@ static int nl80211_tx_mgmt(struct sk_buff *skb, struct genl_info *info)
                 return -EOPNOTSUPP;
 
         switch (wdev->iftype) {
+        case NL80211_IFTYPE_P2P_DEVICE:
+                if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
+                        return -EINVAL;
         case NL80211_IFTYPE_STATION:
         case NL80211_IFTYPE_ADHOC:
         case NL80211_IFTYPE_P2P_CLIENT:
@@ -7166,7 +7200,6 @@ static int nl80211_tx_mgmt(struct sk_buff *skb, struct genl_info *info)
         case NL80211_IFTYPE_AP_VLAN:
         case NL80211_IFTYPE_MESH_POINT:
         case NL80211_IFTYPE_P2P_GO:
-        case NL80211_IFTYPE_P2P_DEVICE:
                 break;
         default:
                 return -EOPNOTSUPP;
@@ -7194,9 +7227,18 @@ static int nl80211_tx_mgmt(struct sk_buff *skb, struct genl_info *info)
 
         no_cck = nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]);
 
-        err = nl80211_parse_chandef(rdev, info, &chandef);
-        if (err)
-                return err;
+        /* get the channel if any has been specified, otherwise pass NULL to
+         * the driver. The latter will use the current one
+         */
+        chandef.chan = NULL;
+        if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
+                err = nl80211_parse_chandef(rdev, info, &chandef);
+                if (err)
+                        return err;
+        }
+
+        if (!chandef.chan && offchan)
+                return -EINVAL;
 
         if (!dont_wait_for_ack) {
                 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
@@ -7501,6 +7543,23 @@ static int nl80211_join_mesh(struct sk_buff *skb, struct genl_info *info)
                 setup.chandef.chan = NULL;
         }
 
+        if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
+                u8 *rates = nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
+                int n_rates =
+                        nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
+                struct ieee80211_supported_band *sband;
+
+                if (!setup.chandef.chan)
+                        return -EINVAL;
+
+                sband = rdev->wiphy.bands[setup.chandef.chan->band];
+
+                err = ieee80211_get_ratemask(sband, rates, n_rates,
+                                             &setup.basic_rates);
+                if (err)
+                        return err;
+        }
+
         return cfg80211_join_mesh(rdev, dev, &setup, &cfg);
 }
 
@@ -7516,28 +7575,29 @@ static int nl80211_leave_mesh(struct sk_buff *skb, struct genl_info *info)
 static int nl80211_send_wowlan_patterns(struct sk_buff *msg,
                                         struct cfg80211_registered_device *rdev)
 {
+        struct cfg80211_wowlan *wowlan = rdev->wiphy.wowlan_config;
         struct nlattr *nl_pats, *nl_pat;
         int i, pat_len;
 
-        if (!rdev->wowlan->n_patterns)
+        if (!wowlan->n_patterns)
                 return 0;
 
         nl_pats = nla_nest_start(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN);
         if (!nl_pats)
                 return -ENOBUFS;
 
-        for (i = 0; i < rdev->wowlan->n_patterns; i++) {
+        for (i = 0; i < wowlan->n_patterns; i++) {
                 nl_pat = nla_nest_start(msg, i + 1);
                 if (!nl_pat)
                         return -ENOBUFS;
-                pat_len = rdev->wowlan->patterns[i].pattern_len;
+                pat_len = wowlan->patterns[i].pattern_len;
                 if (nla_put(msg, NL80211_WOWLAN_PKTPAT_MASK,
                             DIV_ROUND_UP(pat_len, 8),
-                            rdev->wowlan->patterns[i].mask) ||
+                            wowlan->patterns[i].mask) ||
                     nla_put(msg, NL80211_WOWLAN_PKTPAT_PATTERN,
-                            pat_len, rdev->wowlan->patterns[i].pattern) ||
+                            pat_len, wowlan->patterns[i].pattern) ||
                     nla_put_u32(msg, NL80211_WOWLAN_PKTPAT_OFFSET,
-                                rdev->wowlan->patterns[i].pkt_offset))
+                                wowlan->patterns[i].pkt_offset))
                         return -ENOBUFS;
                 nla_nest_end(msg, nl_pat);
         }
@@ -7596,16 +7656,15 @@ static int nl80211_get_wowlan(struct sk_buff *skb, struct genl_info *info)
         void *hdr;
         u32 size = NLMSG_DEFAULT_SIZE;
 
-        if (!rdev->wiphy.wowlan.flags && !rdev->wiphy.wowlan.n_patterns &&
-            !rdev->wiphy.wowlan.tcp)
+        if (!rdev->wiphy.wowlan)
                 return -EOPNOTSUPP;
 
-        if (rdev->wowlan && rdev->wowlan->tcp) {
+        if (rdev->wiphy.wowlan_config && rdev->wiphy.wowlan_config->tcp) {
                 /* adjust size to have room for all the data */
-                size += rdev->wowlan->tcp->tokens_size +
-                        rdev->wowlan->tcp->payload_len +
-                        rdev->wowlan->tcp->wake_len +
-                        rdev->wowlan->tcp->wake_len / 8;
+                size += rdev->wiphy.wowlan_config->tcp->tokens_size +
+                        rdev->wiphy.wowlan_config->tcp->payload_len +
+                        rdev->wiphy.wowlan_config->tcp->wake_len +
+                        rdev->wiphy.wowlan_config->tcp->wake_len / 8;
         }
 
         msg = nlmsg_new(size, GFP_KERNEL);
@@ -7617,33 +7676,34 @@ static int nl80211_get_wowlan(struct sk_buff *skb, struct genl_info *info)
         if (!hdr)
                 goto nla_put_failure;
 
-        if (rdev->wowlan) {
+        if (rdev->wiphy.wowlan_config) {
                 struct nlattr *nl_wowlan;
 
                 nl_wowlan = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS);
                 if (!nl_wowlan)
                         goto nla_put_failure;
 
-                if ((rdev->wowlan->any &&
+                if ((rdev->wiphy.wowlan_config->any &&
                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) ||
-                    (rdev->wowlan->disconnect &&
+                    (rdev->wiphy.wowlan_config->disconnect &&
                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) ||
-                    (rdev->wowlan->magic_pkt &&
+                    (rdev->wiphy.wowlan_config->magic_pkt &&
                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) ||
-                    (rdev->wowlan->gtk_rekey_failure &&
+                    (rdev->wiphy.wowlan_config->gtk_rekey_failure &&
                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) ||
-                    (rdev->wowlan->eap_identity_req &&
+                    (rdev->wiphy.wowlan_config->eap_identity_req &&
                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) ||
-                    (rdev->wowlan->four_way_handshake &&
+                    (rdev->wiphy.wowlan_config->four_way_handshake &&
                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) ||
-                    (rdev->wowlan->rfkill_release &&
+                    (rdev->wiphy.wowlan_config->rfkill_release &&
                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE)))
                         goto nla_put_failure;
 
                 if (nl80211_send_wowlan_patterns(msg, rdev))
                         goto nla_put_failure;
 
-                if (nl80211_send_wowlan_tcp(msg, rdev->wowlan->tcp))
+                if (nl80211_send_wowlan_tcp(msg,
+                                            rdev->wiphy.wowlan_config->tcp))
                         goto nla_put_failure;
 
                 nla_nest_end(msg, nl_wowlan);
@@ -7669,7 +7729,7 @@ static int nl80211_parse_wowlan_tcp(struct cfg80211_registered_device *rdev,
         u32 data_size, wake_size, tokens_size = 0, wake_mask_size;
         int err, port;
 
-        if (!rdev->wiphy.wowlan.tcp)
+        if (!rdev->wiphy.wowlan->tcp)
                 return -EINVAL;
 
         err = nla_parse(tb, MAX_NL80211_WOWLAN_TCP,
@@ -7689,16 +7749,16 @@ static int nl80211_parse_wowlan_tcp(struct cfg80211_registered_device *rdev,
                 return -EINVAL;
 
         data_size = nla_len(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD]);
-        if (data_size > rdev->wiphy.wowlan.tcp->data_payload_max)
+        if (data_size > rdev->wiphy.wowlan->tcp->data_payload_max)
                 return -EINVAL;
 
         if (nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]) >
-                        rdev->wiphy.wowlan.tcp->data_interval_max ||
+                        rdev->wiphy.wowlan->tcp->data_interval_max ||
             nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]) == 0)
                 return -EINVAL;
 
         wake_size = nla_len(tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD]);
-        if (wake_size > rdev->wiphy.wowlan.tcp->wake_payload_max)
+        if (wake_size > rdev->wiphy.wowlan->tcp->wake_payload_max)
                 return -EINVAL;
 
         wake_mask_size = nla_len(tb[NL80211_WOWLAN_TCP_WAKE_MASK]);
@@ -7713,13 +7773,13 @@ static int nl80211_parse_wowlan_tcp(struct cfg80211_registered_device *rdev,
 
                 if (!tok->len || tokens_size % tok->len)
                         return -EINVAL;
-                if (!rdev->wiphy.wowlan.tcp->tok)
+                if (!rdev->wiphy.wowlan->tcp->tok)
                         return -EINVAL;
-                if (tok->len > rdev->wiphy.wowlan.tcp->tok->max_len)
+                if (tok->len > rdev->wiphy.wowlan->tcp->tok->max_len)
                         return -EINVAL;
-                if (tok->len < rdev->wiphy.wowlan.tcp->tok->min_len)
+                if (tok->len < rdev->wiphy.wowlan->tcp->tok->min_len)
                         return -EINVAL;
-                if (tokens_size > rdev->wiphy.wowlan.tcp->tok->bufsize)
+                if (tokens_size > rdev->wiphy.wowlan->tcp->tok->bufsize)
                         return -EINVAL;
                 if (tok->offset + tok->len > data_size)
                         return -EINVAL;
@@ -7727,7 +7787,7 @@ static int nl80211_parse_wowlan_tcp(struct cfg80211_registered_device *rdev,
 
         if (tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ]) {
                 seq = nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ]);
-                if (!rdev->wiphy.wowlan.tcp->seq)
+                if (!rdev->wiphy.wowlan->tcp->seq)
                         return -EINVAL;
                 if (seq->len == 0 || seq->len > 4)
                         return -EINVAL;
@@ -7808,17 +7868,16 @@ static int nl80211_set_wowlan(struct sk_buff *skb, struct genl_info *info)
         struct nlattr *tb[NUM_NL80211_WOWLAN_TRIG];
         struct cfg80211_wowlan new_triggers = {};
         struct cfg80211_wowlan *ntrig;
-        struct wiphy_wowlan_support *wowlan = &rdev->wiphy.wowlan;
+        const struct wiphy_wowlan_support *wowlan = rdev->wiphy.wowlan;
         int err, i;
-        bool prev_enabled = rdev->wowlan;
+        bool prev_enabled = rdev->wiphy.wowlan_config;
 
-        if (!rdev->wiphy.wowlan.flags && !rdev->wiphy.wowlan.n_patterns &&
-            !rdev->wiphy.wowlan.tcp)
+        if (!wowlan)
                 return -EOPNOTSUPP;
 
         if (!info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]) {
                 cfg80211_rdev_free_wowlan(rdev);
-                rdev->wowlan = NULL;
+                rdev->wiphy.wowlan_config = NULL;
                 goto set_wakeup;
         }
 
@@ -7954,11 +8013,12 @@ static int nl80211_set_wowlan(struct sk_buff *skb, struct genl_info *info)
                 goto error;
         }
         cfg80211_rdev_free_wowlan(rdev);
-        rdev->wowlan = ntrig;
+        rdev->wiphy.wowlan_config = ntrig;
 
  set_wakeup:
-        if (rdev->ops->set_wakeup && prev_enabled != !!rdev->wowlan)
-                rdev_set_wakeup(rdev, rdev->wowlan);
+        if (rdev->ops->set_wakeup &&
+            prev_enabled != !!rdev->wiphy.wowlan_config)
+                rdev_set_wakeup(rdev, rdev->wiphy.wowlan_config);
 
         return 0;
  error:
@@ -8143,9 +8203,7 @@ static int nl80211_start_p2p_device(struct sk_buff *skb, struct genl_info *info)
         if (wdev->p2p_started)
                 return 0;
 
-        mutex_lock(&rdev->devlist_mtx);
         err = cfg80211_can_add_interface(rdev, wdev->iftype);
-        mutex_unlock(&rdev->devlist_mtx);
         if (err)
                 return err;
 
@@ -8154,9 +8212,7 @@ static int nl80211_start_p2p_device(struct sk_buff *skb, struct genl_info *info)
                 return err;
 
         wdev->p2p_started = true;
-        mutex_lock(&rdev->devlist_mtx);
         rdev->opencount++;
-        mutex_unlock(&rdev->devlist_mtx);
 
         return 0;
 }
@@ -8172,11 +8228,7 @@ static int nl80211_stop_p2p_device(struct sk_buff *skb, struct genl_info *info)
         if (!rdev->ops->stop_p2p_device)
                 return -EOPNOTSUPP;
 
-        mutex_lock(&rdev->devlist_mtx);
-        mutex_lock(&rdev->sched_scan_mtx);
         cfg80211_stop_p2p_device(rdev, wdev);
-        mutex_unlock(&rdev->sched_scan_mtx);
-        mutex_unlock(&rdev->devlist_mtx);
 
         return 0;
 }
@@ -8319,11 +8371,11 @@ static int nl80211_pre_doit(struct genl_ops *ops, struct sk_buff *skb,
                 info->user_ptr[0] = rdev;
         } else if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV ||
                    ops->internal_flags & NL80211_FLAG_NEED_WDEV) {
-                mutex_lock(&cfg80211_mutex);
+                ASSERT_RTNL();
+
                 wdev = __cfg80211_wdev_from_attrs(genl_info_net(info),
                                                   info->attrs);
                 if (IS_ERR(wdev)) {
-                        mutex_unlock(&cfg80211_mutex);
                         if (rtnl)
                                 rtnl_unlock();
                         return PTR_ERR(wdev);
@@ -8334,7 +8386,6 @@ static int nl80211_pre_doit(struct genl_ops *ops, struct sk_buff *skb,
 
                 if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV) {
                         if (!dev) {
-                                mutex_unlock(&cfg80211_mutex);
                                 if (rtnl)
                                         rtnl_unlock();
                                 return -EINVAL;
@@ -8348,7 +8399,6 @@ static int nl80211_pre_doit(struct genl_ops *ops, struct sk_buff *skb,
                 if (dev) {
                         if (ops->internal_flags & NL80211_FLAG_CHECK_NETDEV_UP &&
                             !netif_running(dev)) {
-                                mutex_unlock(&cfg80211_mutex);
                                 if (rtnl)
                                         rtnl_unlock();
                                 return -ENETDOWN;
@@ -8357,17 +8407,12 @@ static int nl80211_pre_doit(struct genl_ops *ops, struct sk_buff *skb,
                         dev_hold(dev);
                 } else if (ops->internal_flags & NL80211_FLAG_CHECK_NETDEV_UP) {
                         if (!wdev->p2p_started) {
-                                mutex_unlock(&cfg80211_mutex);
                                 if (rtnl)
                                         rtnl_unlock();
                                 return -ENETDOWN;
                         }
                 }
 
-                cfg80211_lock_rdev(rdev);
-
-                mutex_unlock(&cfg80211_mutex);
-
                 info->user_ptr[0] = rdev;
         }
 
@@ -8377,8 +8422,6 @@ static int nl80211_pre_doit(struct genl_ops *ops, struct sk_buff *skb,
 static void nl80211_post_doit(struct genl_ops *ops, struct sk_buff *skb,
                               struct genl_info *info)
 {
-        if (info->user_ptr[0])
-                cfg80211_unlock_rdev(info->user_ptr[0]);
         if (info->user_ptr[1]) {
                 if (ops->internal_flags & NL80211_FLAG_NEED_WDEV) {
                         struct wireless_dev *wdev = info->user_ptr[1];
@@ -8398,9 +8441,11 @@ static struct genl_ops nl80211_ops[] = {
                 .cmd = NL80211_CMD_GET_WIPHY,
                 .doit = nl80211_get_wiphy,
                 .dumpit = nl80211_dump_wiphy,
+                .done = nl80211_dump_wiphy_done,
                 .policy = nl80211_policy,
                 /* can be retrieved by unprivileged users */
-                .internal_flags = NL80211_FLAG_NEED_WIPHY,
+                .internal_flags = NL80211_FLAG_NEED_WIPHY |
+                                  NL80211_FLAG_NEED_RTNL,
         },
         {
                 .cmd = NL80211_CMD_SET_WIPHY,
@@ -8415,7 +8460,8 @@ static struct genl_ops nl80211_ops[] = {
                 .dumpit = nl80211_dump_interface,
                 .policy = nl80211_policy,
                 /* can be retrieved by unprivileged users */
-                .internal_flags = NL80211_FLAG_NEED_WDEV,
+                .internal_flags = NL80211_FLAG_NEED_WDEV |
+                                  NL80211_FLAG_NEED_RTNL,
         },
         {
                 .cmd = NL80211_CMD_SET_INTERFACE,
@@ -8574,6 +8620,7 @@ static struct genl_ops nl80211_ops[] = {
                 .cmd = NL80211_CMD_GET_REG,
                 .doit = nl80211_get_reg,
                 .policy = nl80211_policy,
+                .internal_flags = NL80211_FLAG_NEED_RTNL,
                 /* can be retrieved by unprivileged users */
         },
         {
@@ -8581,6 +8628,7 @@ static struct genl_ops nl80211_ops[] = {
                 .doit = nl80211_set_reg,
                 .policy = nl80211_policy,
                 .flags = GENL_ADMIN_PERM,
+                .internal_flags = NL80211_FLAG_NEED_RTNL,
         },
         {
                 .cmd = NL80211_CMD_REQ_SET_REG,
@@ -9014,13 +9062,13 @@ static struct genl_multicast_group nl80211_regulatory_mcgrp = {
 void nl80211_notify_dev_rename(struct cfg80211_registered_device *rdev)
 {
         struct sk_buff *msg;
+        struct nl80211_dump_wiphy_state state = {};
 
         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
         if (!msg)
                 return;
 
-        if (nl80211_send_wiphy(rdev, msg, 0, 0, 0,
-                               false, NULL, NULL, NULL) < 0) {
+        if (nl80211_send_wiphy(rdev, msg, 0, 0, 0, &state) < 0) {
                 nlmsg_free(msg);
                 return;
         }
@@ -9036,8 +9084,6 @@ static int nl80211_add_scan_req(struct sk_buff *msg,
         struct nlattr *nest;
         int i;
 
-        lockdep_assert_held(&rdev->sched_scan_mtx);
-
         if (WARN_ON(!req))
                 return 0;
 
@@ -9344,31 +9390,27 @@ void nl80211_send_disassoc(struct cfg80211_registered_device *rdev,
                                 NL80211_CMD_DISASSOCIATE, gfp);
 }
 
-void cfg80211_send_unprot_deauth(struct net_device *dev, const u8 *buf,
-                                 size_t len)
+void cfg80211_rx_unprot_mlme_mgmt(struct net_device *dev, const u8 *buf,
+                                  size_t len)
 {
         struct wireless_dev *wdev = dev->ieee80211_ptr;
         struct wiphy *wiphy = wdev->wiphy;
         struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
+        const struct ieee80211_mgmt *mgmt = (void *)buf;
+        u32 cmd;
 
-        trace_cfg80211_send_unprot_deauth(dev);
-        nl80211_send_mlme_event(rdev, dev, buf, len,
-                                NL80211_CMD_UNPROT_DEAUTHENTICATE, GFP_ATOMIC);
-}
-EXPORT_SYMBOL(cfg80211_send_unprot_deauth);
+        if (WARN_ON(len < 2))
+                return;
 
-void cfg80211_send_unprot_disassoc(struct net_device *dev, const u8 *buf,
-                                   size_t len)
-{
-        struct wireless_dev *wdev = dev->ieee80211_ptr;
-        struct wiphy *wiphy = wdev->wiphy;
-        struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
+        if (ieee80211_is_deauth(mgmt->frame_control))
+                cmd = NL80211_CMD_UNPROT_DEAUTHENTICATE;
+        else
+                cmd = NL80211_CMD_UNPROT_DISASSOCIATE;
 
-        trace_cfg80211_send_unprot_disassoc(dev);
-        nl80211_send_mlme_event(rdev, dev, buf, len,
-                                NL80211_CMD_UNPROT_DISASSOCIATE, GFP_ATOMIC);
+        trace_cfg80211_rx_unprot_mlme_mgmt(dev, buf, len);
+        nl80211_send_mlme_event(rdev, dev, buf, len, cmd, GFP_ATOMIC);
 }
-EXPORT_SYMBOL(cfg80211_send_unprot_disassoc);
+EXPORT_SYMBOL(cfg80211_rx_unprot_mlme_mgmt);
 
 static void nl80211_send_mlme_timeout(struct cfg80211_registered_device *rdev,
                                       struct net_device *netdev, int cmd,
@@ -9879,7 +9921,6 @@ static bool __nl80211_unexpected_frame(struct net_device *dev, u8 cmd,
         struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
         struct sk_buff *msg;
         void *hdr;
-        int err;
         u32 nlportid = ACCESS_ONCE(wdev->ap_unexpected_nlportid);
 
         if (!nlportid)
@@ -9900,12 +9941,7 @@ static bool __nl80211_unexpected_frame(struct net_device *dev, u8 cmd,
             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr))
                 goto nla_put_failure;
 
-        err = genlmsg_end(msg, hdr);
-        if (err < 0) {
-                nlmsg_free(msg);
-                return true;
-        }
-
+        genlmsg_end(msg, hdr);
         genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
         return true;
 
@@ -10348,10 +10384,7 @@ nl80211_radar_notify(struct cfg80211_registered_device *rdev,
         if (nl80211_send_chandef(msg, chandef))
                 goto nla_put_failure;
 
-        if (genlmsg_end(msg, hdr) < 0) {
-                nlmsg_free(msg);
-                return;
-        }
+        genlmsg_end(msg, hdr);
 
         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
                                 nl80211_mlme_mcgrp.id, gfp);
@@ -10417,7 +10450,6 @@ void cfg80211_probe_status(struct net_device *dev, const u8 *addr,
         struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
         struct sk_buff *msg;
         void *hdr;
-        int err;
 
         trace_cfg80211_probe_status(dev, addr, cookie, acked);
 
@@ -10439,11 +10471,7 @@ void cfg80211_probe_status(struct net_device *dev, const u8 *addr,
             (acked && nla_put_flag(msg, NL80211_ATTR_ACK)))
                 goto nla_put_failure;
 
-        err = genlmsg_end(msg, hdr);
-        if (err < 0) {
-                nlmsg_free(msg);
-                return;
-        }
+        genlmsg_end(msg, hdr);
 
         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
                                 nl80211_mlme_mcgrp.id, gfp);
@@ -10509,7 +10537,7 @@ void cfg80211_report_wowlan_wakeup(struct wireless_dev *wdev,
         struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
         struct sk_buff *msg;
         void *hdr;
-        int err, size = 200;
+        int size = 200;
 
         trace_cfg80211_report_wowlan_wakeup(wdev->wiphy, wdev, wakeup);
 
@@ -10595,9 +10623,7 @@ void cfg80211_report_wowlan_wakeup(struct wireless_dev *wdev,
                 nla_nest_end(msg, reasons);
         }
 
-        err = genlmsg_end(msg, hdr);
-        if (err < 0)
-                goto free_msg;
+        genlmsg_end(msg, hdr);
 
         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
                                 nl80211_mlme_mcgrp.id, gfp);
@@ -10617,7 +10643,6 @@ void cfg80211_tdls_oper_request(struct net_device *dev, const u8 *peer,
         struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
         struct sk_buff *msg;
         void *hdr;
-        int err;
 
         trace_cfg80211_tdls_oper_request(wdev->wiphy, dev, peer, oper,
                                          reason_code);
@@ -10640,11 +10665,7 @@ void cfg80211_tdls_oper_request(struct net_device *dev, const u8 *peer,
              nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason_code)))
                 goto nla_put_failure;
 
-        err = genlmsg_end(msg, hdr);
-        if (err < 0) {
-                nlmsg_free(msg);
-                return;
-        }
+        genlmsg_end(msg, hdr);
 
         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
                                 nl80211_mlme_mcgrp.id, gfp);
@@ -10702,7 +10723,6 @@ void cfg80211_ft_event(struct net_device *netdev,
         struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
         struct sk_buff *msg;
         void *hdr;
-        int err;
 
         trace_cfg80211_ft_event(wiphy, netdev, ft_event);
 
@@ -10728,11 +10748,7 @@ void cfg80211_ft_event(struct net_device *netdev,
                 nla_put(msg, NL80211_ATTR_IE_RIC, ft_event->ric_ies_len,
                         ft_event->ric_ies);
 
-        err = genlmsg_end(msg, hdr);
-        if (err < 0) {
-                nlmsg_free(msg);
-                return;
-        }
+        genlmsg_end(msg, hdr);
 
         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
                                 nl80211_mlme_mcgrp.id, GFP_KERNEL);
diff --git a/net/wireless/reg.c b/net/wireless/reg.c
index cc35fbaa4578..5a24c986f34b 100644
--- a/net/wireless/reg.c
+++ b/net/wireless/reg.c
@@ -81,7 +81,10 @@ static struct regulatory_request core_request_world = {
         .country_ie_env = ENVIRON_ANY,
 };
 
-/* Receipt of information from last regulatory request */
+/*
+ * Receipt of information from last regulatory request,
+ * protected by RTNL (and can be accessed with RCU protection)
+ */
 static struct regulatory_request __rcu *last_request =
         (void __rcu *)&core_request_world;
 
@@ -96,39 +99,25 @@ static struct device_type reg_device_type = {
  * Central wireless core regulatory domains, we only need two,
  * the current one and a world regulatory domain in case we have no
  * information to give us an alpha2.
+ * (protected by RTNL, can be read under RCU)
  */
 const struct ieee80211_regdomain __rcu *cfg80211_regdomain;
 
 /*
- * Protects static reg.c components:
- *      - cfg80211_regdomain (if not used with RCU)
- *      - cfg80211_world_regdom
- *      - last_request (if not used with RCU)
- *      - reg_num_devs_support_basehint
- */
-static DEFINE_MUTEX(reg_mutex);
-
-/*
  * Number of devices that registered to the core
  * that support cellular base station regulatory hints
+ * (protected by RTNL)
  */
 static int reg_num_devs_support_basehint;
 
-static inline void assert_reg_lock(void)
-{
-        lockdep_assert_held(&reg_mutex);
-}
-
 static const struct ieee80211_regdomain *get_cfg80211_regdom(void)
 {
-        return rcu_dereference_protected(cfg80211_regdomain,
-                                         lockdep_is_held(&reg_mutex));
+        return rtnl_dereference(cfg80211_regdomain);
 }
 
 static const struct ieee80211_regdomain *get_wiphy_regdom(struct wiphy *wiphy)
 {
-        return rcu_dereference_protected(wiphy->regd,
-                                         lockdep_is_held(&reg_mutex));
+        return rtnl_dereference(wiphy->regd);
 }
 
 static void rcu_free_regdom(const struct ieee80211_regdomain *r)
@@ -140,8 +129,7 @@ static void rcu_free_regdom(const struct ieee80211_regdomain *r)
 
 static struct regulatory_request *get_last_request(void)
 {
-        return rcu_dereference_check(last_request,
-                                     lockdep_is_held(&reg_mutex));
+        return rcu_dereference_rtnl(last_request);
 }
 
 /* Used to queue up regulatory hints */
@@ -200,6 +188,7 @@ static const struct ieee80211_regdomain world_regdom = {
         }
 };
 
+/* protected by RTNL */
 static const struct ieee80211_regdomain *cfg80211_world_regdom =
         &world_regdom;
 
@@ -215,7 +204,7 @@ static void reset_regdomains(bool full_reset,
         const struct ieee80211_regdomain *r;
         struct regulatory_request *lr;
 
-        assert_reg_lock();
+        ASSERT_RTNL();
 
         r = get_cfg80211_regdom();
 
@@ -377,7 +366,7 @@ static void reg_regdb_search(struct work_struct *work)
         const struct ieee80211_regdomain *curdom, *regdom = NULL;
         int i;
 
-        mutex_lock(&cfg80211_mutex);
+        rtnl_lock();
 
         mutex_lock(&reg_regdb_search_mutex);
         while (!list_empty(&reg_regdb_search_list)) {
@@ -402,7 +391,7 @@ static void reg_regdb_search(struct work_struct *work)
         if (!IS_ERR_OR_NULL(regdom))
                 set_regdom(regdom);
 
-        mutex_unlock(&cfg80211_mutex);
+        rtnl_unlock();
 }
 
 static DECLARE_WORK(reg_regdb_work, reg_regdb_search);
@@ -936,13 +925,7 @@ static bool reg_request_cell_base(struct regulatory_request *request)
 
 bool reg_last_request_cell_base(void)
 {
-        bool val;
-
-        mutex_lock(&reg_mutex);
-        val = reg_request_cell_base(get_last_request());
-        mutex_unlock(&reg_mutex);
-
-        return val;
+        return reg_request_cell_base(get_last_request());
 }
 
 #ifdef CONFIG_CFG80211_CERTIFICATION_ONUS
@@ -1225,7 +1208,7 @@ static void update_all_wiphy_regulatory(enum nl80211_reg_initiator initiator)
         struct cfg80211_registered_device *rdev;
         struct wiphy *wiphy;
 
-        assert_cfg80211_lock();
+        ASSERT_RTNL();
 
         list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
                 wiphy = &rdev->wiphy;
@@ -1362,7 +1345,7 @@ get_reg_request_treatment(struct wiphy *wiphy,
                                 return REG_REQ_OK;
                         return REG_REQ_ALREADY_SET;
                 }
-                return 0;
+                return REG_REQ_OK;
         case NL80211_REGDOM_SET_BY_DRIVER:
                 if (lr->initiator == NL80211_REGDOM_SET_BY_CORE) {
                         if (regdom_changes(pending_request->alpha2))
@@ -1444,8 +1427,6 @@ static void reg_set_request_processed(void)
  * what it believes should be the current regulatory domain.
  *
  * Returns one of the different reg request treatment values.
- *
- * Caller must hold &reg_mutex
  */
 static enum reg_request_treatment
 __regulatory_hint(struct wiphy *wiphy,
@@ -1570,21 +1551,19 @@ static void reg_process_pending_hints(void)
 {
         struct regulatory_request *reg_request, *lr;
 
-        mutex_lock(&cfg80211_mutex);
-        mutex_lock(&reg_mutex);
         lr = get_last_request();
 
         /* When last_request->processed becomes true this will be rescheduled */
         if (lr && !lr->processed) {
                 REG_DBG_PRINT("Pending regulatory request, waiting for it to be processed...\n");
-                goto out;
+                return;
         }
 
         spin_lock(&reg_requests_lock);
 
         if (list_empty(&reg_requests_list)) {
                 spin_unlock(&reg_requests_lock);
-                goto out;
+                return;
         }
 
         reg_request = list_first_entry(&reg_requests_list,
@@ -1595,10 +1574,6 @@ static void reg_process_pending_hints(void)
         spin_unlock(&reg_requests_lock);
 
         reg_process_hint(reg_request, reg_request->initiator);
-
-out:
-        mutex_unlock(&reg_mutex);
-        mutex_unlock(&cfg80211_mutex);
 }
 
 /* Processes beacon hints -- this has nothing to do with country IEs */
@@ -1607,9 +1582,6 @@ static void reg_process_pending_beacon_hints(void)
         struct cfg80211_registered_device *rdev;
         struct reg_beacon *pending_beacon, *tmp;
 
-        mutex_lock(&cfg80211_mutex);
-        mutex_lock(&reg_mutex);
-
         /* This goes through the _pending_ beacon list */
         spin_lock_bh(&reg_pending_beacons_lock);
 
@@ -1626,14 +1598,14 @@ static void reg_process_pending_beacon_hints(void)
         }
 
         spin_unlock_bh(&reg_pending_beacons_lock);
-        mutex_unlock(&reg_mutex);
-        mutex_unlock(&cfg80211_mutex);
 }
 
 static void reg_todo(struct work_struct *work)
 {
+        rtnl_lock();
         reg_process_pending_hints();
         reg_process_pending_beacon_hints();
+        rtnl_unlock();
 }
 
 static void queue_regulatory_request(struct regulatory_request *request)
@@ -1717,29 +1689,23 @@ int regulatory_hint(struct wiphy *wiphy, const char *alpha2)
 }
 EXPORT_SYMBOL(regulatory_hint);
 
-/*
- * We hold wdev_lock() here so we cannot hold cfg80211_mutex() and
- * therefore cannot iterate over the rdev list here.
- */
 void regulatory_hint_11d(struct wiphy *wiphy, enum ieee80211_band band,
                          const u8 *country_ie, u8 country_ie_len)
 {
         char alpha2[2];
         enum environment_cap env = ENVIRON_ANY;
-        struct regulatory_request *request, *lr;
-
-        mutex_lock(&reg_mutex);
-        lr = get_last_request();
-
-        if (unlikely(!lr))
-                goto out;
+        struct regulatory_request *request = NULL, *lr;
 
         /* IE len must be evenly divisible by 2 */
         if (country_ie_len & 0x01)
-                goto out;
+                return;
 
         if (country_ie_len < IEEE80211_COUNTRY_IE_MIN_LEN)
-                goto out;
+                return;
+
+        request = kzalloc(sizeof(*request), GFP_KERNEL);
+        if (!request)
+                return;
 
         alpha2[0] = country_ie[0];
         alpha2[1] = country_ie[1];
@@ -1749,19 +1715,21 @@ void regulatory_hint_11d(struct wiphy *wiphy, enum ieee80211_band band,
         else if (country_ie[2] == 'O')
                 env = ENVIRON_OUTDOOR;
 
+        rcu_read_lock();
+        lr = get_last_request();
+
+        if (unlikely(!lr))
+                goto out;
+
         /*
          * We will run this only upon a successful connection on cfg80211.
          * We leave conflict resolution to the workqueue, where can hold
-         * cfg80211_mutex.
+         * the RTNL.
          */
         if (lr->initiator == NL80211_REGDOM_SET_BY_COUNTRY_IE &&
             lr->wiphy_idx != WIPHY_IDX_INVALID)
                 goto out;
 
-        request = kzalloc(sizeof(struct regulatory_request), GFP_KERNEL);
-        if (!request)
-                goto out;
-
         request->wiphy_idx = get_wiphy_idx(wiphy);
         request->alpha2[0] = alpha2[0];
         request->alpha2[1] = alpha2[1];
@@ -1769,8 +1737,10 @@ void regulatory_hint_11d(struct wiphy *wiphy, enum ieee80211_band band,
         request->country_ie_env = env;
 
         queue_regulatory_request(request);
+        request = NULL;
 out:
-        mutex_unlock(&reg_mutex);
+        kfree(request);
+        rcu_read_unlock();
 }
 
 static void restore_alpha2(char *alpha2, bool reset_user)
@@ -1858,8 +1828,7 @@ static void restore_regulatory_settings(bool reset_user)
         LIST_HEAD(tmp_reg_req_list);
         struct cfg80211_registered_device *rdev;
 
-        mutex_lock(&cfg80211_mutex);
-        mutex_lock(&reg_mutex);
+        ASSERT_RTNL();
 
         reset_regdomains(true, &world_regdom);
         restore_alpha2(alpha2, reset_user);
@@ -1914,9 +1883,6 @@ static void restore_regulatory_settings(bool reset_user)
         list_splice_tail_init(&tmp_reg_req_list, &reg_requests_list);
         spin_unlock(&reg_requests_lock);
 
-        mutex_unlock(&reg_mutex);
-        mutex_unlock(&cfg80211_mutex);
-
         REG_DBG_PRINT("Kicking the queue\n");
 
         schedule_work(&reg_work);
@@ -2231,7 +2197,6 @@ int set_regdom(const struct ieee80211_regdomain *rd)
         struct regulatory_request *lr;
         int r;
 
-        mutex_lock(&reg_mutex);
         lr = get_last_request();
 
         /* Note that this doesn't update the wiphys, this is done below */
@@ -2241,14 +2206,12 @@ int set_regdom(const struct ieee80211_regdomain *rd)
                         reg_set_request_processed();
 
                 kfree(rd);
-                goto out;
+                return r;
         }
 
         /* This would make this whole thing pointless */
-        if (WARN_ON(!lr->intersect && rd != get_cfg80211_regdom())) {
-                r = -EINVAL;
-                goto out;
-        }
+        if (WARN_ON(!lr->intersect && rd != get_cfg80211_regdom()))
+                return -EINVAL;
 
         /* update all wiphys now with the new established regulatory domain */
         update_all_wiphy_regulatory(lr->initiator);
@@ -2259,10 +2222,7 @@ int set_regdom(const struct ieee80211_regdomain *rd)
 
         reg_set_request_processed();
 
- out:
-        mutex_unlock(&reg_mutex);
-
-        return r;
+        return 0;
 }
 
 int reg_device_uevent(struct device *dev, struct kobj_uevent_env *env)
@@ -2287,23 +2247,17 @@ int reg_device_uevent(struct device *dev, struct kobj_uevent_env *env)
 
 void wiphy_regulatory_register(struct wiphy *wiphy)
 {
-        mutex_lock(&reg_mutex);
-
         if (!reg_dev_ignore_cell_hint(wiphy))
                 reg_num_devs_support_basehint++;
 
         wiphy_update_regulatory(wiphy, NL80211_REGDOM_SET_BY_CORE);
-
-        mutex_unlock(&reg_mutex);
 }
 
-/* Caller must hold cfg80211_mutex */
 void wiphy_regulatory_deregister(struct wiphy *wiphy)
 {
         struct wiphy *request_wiphy = NULL;
         struct regulatory_request *lr;
 
-        mutex_lock(&reg_mutex);
         lr = get_last_request();
 
         if (!reg_dev_ignore_cell_hint(wiphy))
@@ -2316,12 +2270,10 @@ void wiphy_regulatory_deregister(struct wiphy *wiphy)
                 request_wiphy = wiphy_idx_to_wiphy(lr->wiphy_idx);
 
         if (!request_wiphy || request_wiphy != wiphy)
-                goto out;
+                return;
 
         lr->wiphy_idx = WIPHY_IDX_INVALID;
         lr->country_ie_env = ENVIRON_ANY;
-out:
-        mutex_unlock(&reg_mutex);
 }
 
 static void reg_timeout_work(struct work_struct *work)
@@ -2385,9 +2337,9 @@ void regulatory_exit(void)
         cancel_delayed_work_sync(&reg_timeout);
 
         /* Lock to suppress warnings */
-        mutex_lock(&reg_mutex);
+        rtnl_lock();
         reset_regdomains(true, NULL);
-        mutex_unlock(&reg_mutex);
+        rtnl_unlock();
 
         dev_set_uevent_suppress(&reg_pdev->dev, true);
 
diff --git a/net/wireless/scan.c b/net/wireless/scan.c
index fd99ea495b7e..ae8c186b50d6 100644
--- a/net/wireless/scan.c
+++ b/net/wireless/scan.c
@@ -169,7 +169,7 @@ void ___cfg80211_scan_done(struct cfg80211_registered_device *rdev, bool leak)
         union iwreq_data wrqu;
 #endif
 
-        lockdep_assert_held(&rdev->sched_scan_mtx);
+        ASSERT_RTNL();
 
         request = rdev->scan_req;
 
@@ -230,9 +230,9 @@ void __cfg80211_scan_done(struct work_struct *wk)
         rdev = container_of(wk, struct cfg80211_registered_device,
                             scan_done_wk);
 
-        mutex_lock(&rdev->sched_scan_mtx);
+        rtnl_lock();
         ___cfg80211_scan_done(rdev, false);
-        mutex_unlock(&rdev->sched_scan_mtx);
+        rtnl_unlock();
 }
 
 void cfg80211_scan_done(struct cfg80211_scan_request *request, bool aborted)
@@ -241,6 +241,7 @@ void cfg80211_scan_done(struct cfg80211_scan_request *request, bool aborted)
         WARN_ON(request != wiphy_to_dev(request->wiphy)->scan_req);
 
         request->aborted = aborted;
+        request->notified = true;
         queue_work(cfg80211_wq, &wiphy_to_dev(request->wiphy)->scan_done_wk);
 }
 EXPORT_SYMBOL(cfg80211_scan_done);
@@ -255,7 +256,7 @@ void __cfg80211_sched_scan_results(struct work_struct *wk)
 
         request = rdev->sched_scan_req;
 
-        mutex_lock(&rdev->sched_scan_mtx);
+        rtnl_lock();
 
         /* we don't have sched_scan_req anymore if the scan is stopping */
         if (request) {
@@ -270,7 +271,7 @@ void __cfg80211_sched_scan_results(struct work_struct *wk)
                 nl80211_send_sched_scan_results(rdev, request->dev);
         }
 
-        mutex_unlock(&rdev->sched_scan_mtx);
+        rtnl_unlock();
 }
 
 void cfg80211_sched_scan_results(struct wiphy *wiphy)
@@ -289,9 +290,9 @@ void cfg80211_sched_scan_stopped(struct wiphy *wiphy)
 
         trace_cfg80211_sched_scan_stopped(wiphy);
 
-        mutex_lock(&rdev->sched_scan_mtx);
+        rtnl_lock();
         __cfg80211_stop_sched_scan(rdev, true);
-        mutex_unlock(&rdev->sched_scan_mtx);
+        rtnl_unlock();
 }
 EXPORT_SYMBOL(cfg80211_sched_scan_stopped);
 
@@ -300,7 +301,7 @@ int __cfg80211_stop_sched_scan(struct cfg80211_registered_device *rdev,
 {
         struct net_device *dev;
 
-        lockdep_assert_held(&rdev->sched_scan_mtx);
+        ASSERT_RTNL();
 
         if (!rdev->sched_scan_req)
                 return -ENOENT;
@@ -522,6 +523,7 @@ static int cmp_bss(struct cfg80211_bss *a,
         }
 }
 
+/* Returned bss is reference counted and must be cleaned up appropriately. */
 struct cfg80211_bss *cfg80211_get_bss(struct wiphy *wiphy,
                                       struct ieee80211_channel *channel,
                                       const u8 *bssid,
@@ -677,6 +679,7 @@ static bool cfg80211_combine_bsses(struct cfg80211_registered_device *dev,
         return true;
 }
 
+/* Returned bss is reference counted and must be cleaned up appropriately. */
 static struct cfg80211_internal_bss *
 cfg80211_bss_update(struct cfg80211_registered_device *dev,
                     struct cfg80211_internal_bss *tmp)
@@ -865,6 +868,7 @@ cfg80211_get_bss_channel(struct wiphy *wiphy, const u8 *ie, size_t ielen,
         return channel;
 }
 
+/* Returned bss is reference counted and must be cleaned up appropriately. */
 struct cfg80211_bss*
 cfg80211_inform_bss(struct wiphy *wiphy,
                     struct ieee80211_channel *channel,
@@ -922,6 +926,7 @@ cfg80211_inform_bss(struct wiphy *wiphy,
 }
 EXPORT_SYMBOL(cfg80211_inform_bss);
 
+/* Returned bss is reference counted and must be cleaned up appropriately. */
 struct cfg80211_bss *
 cfg80211_inform_bss_frame(struct wiphy *wiphy,
                           struct ieee80211_channel *channel,
@@ -1040,6 +1045,25 @@ void cfg80211_unlink_bss(struct wiphy *wiphy, struct cfg80211_bss *pub)
 EXPORT_SYMBOL(cfg80211_unlink_bss);
 
 #ifdef CONFIG_CFG80211_WEXT
+static struct cfg80211_registered_device *
+cfg80211_get_dev_from_ifindex(struct net *net, int ifindex)
+{
+        struct cfg80211_registered_device *rdev;
+        struct net_device *dev;
+
+        ASSERT_RTNL();
+
+        dev = dev_get_by_index(net, ifindex);
+        if (!dev)
+                return ERR_PTR(-ENODEV);
+        if (dev->ieee80211_ptr)
+                rdev = wiphy_to_dev(dev->ieee80211_ptr->wiphy);
+        else
+                rdev = ERR_PTR(-ENODEV);
+        dev_put(dev);
+        return rdev;
+}
+
 int cfg80211_wext_siwscan(struct net_device *dev,
                           struct iw_request_info *info,
                           union iwreq_data *wrqu, char *extra)
@@ -1062,7 +1086,6 @@ int cfg80211_wext_siwscan(struct net_device *dev,
         if (IS_ERR(rdev))
                 return PTR_ERR(rdev);
 
-        mutex_lock(&rdev->sched_scan_mtx);
         if (rdev->scan_req) {
                 err = -EBUSY;
                 goto out;
@@ -1169,9 +1192,7 @@ int cfg80211_wext_siwscan(struct net_device *dev,
                 dev_hold(dev);
         }
  out:
-        mutex_unlock(&rdev->sched_scan_mtx);
         kfree(creq);
-        cfg80211_unlock_rdev(rdev);
         return err;
 }
 EXPORT_SYMBOL_GPL(cfg80211_wext_siwscan);
@@ -1470,10 +1491,8 @@ int cfg80211_wext_giwscan(struct net_device *dev,
         if (IS_ERR(rdev))
                 return PTR_ERR(rdev);
 
-        if (rdev->scan_req) {
-                res = -EAGAIN;
-                goto out;
-        }
+        if (rdev->scan_req)
+                return -EAGAIN;
 
         res = ieee80211_scan_results(rdev, info, extra, data->length);
         data->length = 0;
@@ -1482,8 +1501,6 @@ int cfg80211_wext_giwscan(struct net_device *dev,
                 res = 0;
         }
 
- out:
-        cfg80211_unlock_rdev(rdev);
         return res;
 }
 EXPORT_SYMBOL_GPL(cfg80211_wext_giwscan);
diff --git a/net/wireless/sme.c b/net/wireless/sme.c
index 3ed35c345cae..1d3cfb1a3f28 100644
--- a/net/wireless/sme.c
+++ b/net/wireless/sme.c
@@ -1,5 +1,7 @@
 /*
- * SME code for cfg80211's connect emulation.
+ * SME code for cfg80211
+ * both driver SME event handling and the SME implementation
+ * (for nl80211's connect() and wext)
  *
  * Copyright 2009       Johannes Berg <johannes@sipsolutions.net>
  * Copyright (C) 2009   Intel Corporation. All rights reserved.
@@ -18,18 +20,24 @@
 #include "reg.h"
 #include "rdev-ops.h"
 
+/*
+ * Software SME in cfg80211, using auth/assoc/deauth calls to the
+ * driver. This is is for implementing nl80211's connect/disconnect
+ * and wireless extensions (if configured.)
+ */
+
 struct cfg80211_conn {
         struct cfg80211_connect_params params;
         /* these are sub-states of the _CONNECTING sme_state */
         enum {
-                CFG80211_CONN_IDLE,
                 CFG80211_CONN_SCANNING,
                 CFG80211_CONN_SCAN_AGAIN,
                 CFG80211_CONN_AUTHENTICATE_NEXT,
                 CFG80211_CONN_AUTHENTICATING,
                 CFG80211_CONN_ASSOCIATE_NEXT,
                 CFG80211_CONN_ASSOCIATING,
-                CFG80211_CONN_DEAUTH_ASSOC_FAIL,
+                CFG80211_CONN_DEAUTH,
+                CFG80211_CONN_CONNECTED,
         } state;
         u8 bssid[ETH_ALEN], prev_bssid[ETH_ALEN];
         u8 *ie;
@@ -37,45 +45,16 @@ struct cfg80211_conn {
         bool auto_auth, prev_bssid_valid;
 };
 
-static bool cfg80211_is_all_idle(void)
-{
-        struct cfg80211_registered_device *rdev;
-        struct wireless_dev *wdev;
-        bool is_all_idle = true;
-
-        mutex_lock(&cfg80211_mutex);
-
-        /*
-         * All devices must be idle as otherwise if you are actively
-         * scanning some new beacon hints could be learned and would
-         * count as new regulatory hints.
-         */
-        list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
-                cfg80211_lock_rdev(rdev);
-                list_for_each_entry(wdev, &rdev->wdev_list, list) {
-                        wdev_lock(wdev);
-                        if (wdev->sme_state != CFG80211_SME_IDLE)
-                                is_all_idle = false;
-                        wdev_unlock(wdev);
-                }
-                cfg80211_unlock_rdev(rdev);
-        }
-
-        mutex_unlock(&cfg80211_mutex);
-
-        return is_all_idle;
-}
-
-static void disconnect_work(struct work_struct *work)
+static void cfg80211_sme_free(struct wireless_dev *wdev)
 {
-        if (!cfg80211_is_all_idle())
+        if (!wdev->conn)
                 return;
 
-        regulatory_hint_disconnect();
+        kfree(wdev->conn->ie);
+        kfree(wdev->conn);
+        wdev->conn = NULL;
 }
 
-static DECLARE_WORK(cfg80211_disconnect_work, disconnect_work);
-
 static int cfg80211_conn_scan(struct wireless_dev *wdev)
 {
         struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
@@ -85,7 +64,6 @@ static int cfg80211_conn_scan(struct wireless_dev *wdev)
         ASSERT_RTNL();
         ASSERT_RDEV_LOCK(rdev);
         ASSERT_WDEV_LOCK(wdev);
-        lockdep_assert_held(&rdev->sched_scan_mtx);
 
         if (rdev->scan_req)
                 return -EBUSY;
@@ -171,18 +149,21 @@ static int cfg80211_conn_do_work(struct wireless_dev *wdev)
         params = &wdev->conn->params;
 
         switch (wdev->conn->state) {
+        case CFG80211_CONN_SCANNING:
+                /* didn't find it during scan ... */
+                return -ENOENT;
         case CFG80211_CONN_SCAN_AGAIN:
                 return cfg80211_conn_scan(wdev);
         case CFG80211_CONN_AUTHENTICATE_NEXT:
                 BUG_ON(!rdev->ops->auth);
                 wdev->conn->state = CFG80211_CONN_AUTHENTICATING;
-                return __cfg80211_mlme_auth(rdev, wdev->netdev,
-                                            params->channel, params->auth_type,
-                                            params->bssid,
-                                            params->ssid, params->ssid_len,
-                                            NULL, 0,
-                                            params->key, params->key_len,
-                                            params->key_idx, NULL, 0);
+                return cfg80211_mlme_auth(rdev, wdev->netdev,
+                                          params->channel, params->auth_type,
+                                          params->bssid,
+                                          params->ssid, params->ssid_len,
+                                          NULL, 0,
+                                          params->key, params->key_len,
+                                          params->key_idx, NULL, 0);
         case CFG80211_CONN_ASSOCIATE_NEXT:
                 BUG_ON(!rdev->ops->assoc);
                 wdev->conn->state = CFG80211_CONN_ASSOCIATING;
@@ -198,21 +179,20 @@ static int cfg80211_conn_do_work(struct wireless_dev *wdev)
                 req.vht_capa = params->vht_capa;
                 req.vht_capa_mask = params->vht_capa_mask;
 
-                err = __cfg80211_mlme_assoc(rdev, wdev->netdev, params->channel,
-                                            params->bssid, params->ssid,
-                                            params->ssid_len, &req);
+                err = cfg80211_mlme_assoc(rdev, wdev->netdev, params->channel,
+                                          params->bssid, params->ssid,
+                                          params->ssid_len, &req);
                 if (err)
-                        __cfg80211_mlme_deauth(rdev, wdev->netdev, params->bssid,
-                                               NULL, 0,
-                                               WLAN_REASON_DEAUTH_LEAVING,
-                                               false);
+                        cfg80211_mlme_deauth(rdev, wdev->netdev, params->bssid,
+                                             NULL, 0,
+                                             WLAN_REASON_DEAUTH_LEAVING,
+                                             false);
                 return err;
-        case CFG80211_CONN_DEAUTH_ASSOC_FAIL:
-                __cfg80211_mlme_deauth(rdev, wdev->netdev, params->bssid,
-                                       NULL, 0,
-                                       WLAN_REASON_DEAUTH_LEAVING, false);
-                /* return an error so that we call __cfg80211_connect_result() */
-                return -EINVAL;
+        case CFG80211_CONN_DEAUTH:
+                cfg80211_mlme_deauth(rdev, wdev->netdev, params->bssid,
+                                     NULL, 0,
+                                     WLAN_REASON_DEAUTH_LEAVING, false);
+                return 0;
         default:
                 return 0;
         }
@@ -226,9 +206,6 @@ void cfg80211_conn_work(struct work_struct *work)
         u8 bssid_buf[ETH_ALEN], *bssid = NULL;
 
         rtnl_lock();
-        cfg80211_lock_rdev(rdev);
-        mutex_lock(&rdev->devlist_mtx);
-        mutex_lock(&rdev->sched_scan_mtx);
 
         list_for_each_entry(wdev, &rdev->wdev_list, list) {
                 if (!wdev->netdev)
@@ -239,7 +216,8 @@ void cfg80211_conn_work(struct work_struct *work)
                         wdev_unlock(wdev);
                         continue;
                 }
-                if (wdev->sme_state != CFG80211_SME_CONNECTING || !wdev->conn) {
+                if (!wdev->conn ||
+                    wdev->conn->state == CFG80211_CONN_CONNECTED) {
                         wdev_unlock(wdev);
                         continue;
                 }
@@ -247,21 +225,21 @@ void cfg80211_conn_work(struct work_struct *work)
                         memcpy(bssid_buf, wdev->conn->params.bssid, ETH_ALEN);
                         bssid = bssid_buf;
                 }
-                if (cfg80211_conn_do_work(wdev))
+                if (cfg80211_conn_do_work(wdev)) {
                         __cfg80211_connect_result(
                                         wdev->netdev, bssid,
                                         NULL, 0, NULL, 0,
                                         WLAN_STATUS_UNSPECIFIED_FAILURE,
                                         false, NULL);
+                        cfg80211_sme_free(wdev);
+                }
                 wdev_unlock(wdev);
         }
 
-        mutex_unlock(&rdev->sched_scan_mtx);
-        mutex_unlock(&rdev->devlist_mtx);
-        cfg80211_unlock_rdev(rdev);
         rtnl_unlock();
 }
 
+/* Returned bss is reference counted and must be cleaned up appropriately. */
 static struct cfg80211_bss *cfg80211_get_conn_bss(struct wireless_dev *wdev)
 {
         struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
@@ -299,9 +277,6 @@ static void __cfg80211_sme_scan_done(struct net_device *dev)
 
         ASSERT_WDEV_LOCK(wdev);
 
-        if (wdev->sme_state != CFG80211_SME_CONNECTING)
-                return;
-
         if (!wdev->conn)
                 return;
 
@@ -310,20 +285,10 @@ static void __cfg80211_sme_scan_done(struct net_device *dev)
                 return;
 
         bss = cfg80211_get_conn_bss(wdev);
-        if (bss) {
+        if (bss)
                 cfg80211_put_bss(&rdev->wiphy, bss);
-        } else {
-                /* not found */
-                if (wdev->conn->state == CFG80211_CONN_SCAN_AGAIN)
-                        schedule_work(&rdev->conn_work);
-                else
-                        __cfg80211_connect_result(
-                                        wdev->netdev,
-                                        wdev->conn->params.bssid,
-                                        NULL, 0, NULL, 0,
-                                        WLAN_STATUS_UNSPECIFIED_FAILURE,
-                                        false, NULL);
-        }
+        else
+                schedule_work(&rdev->conn_work);
 }
 
 void cfg80211_sme_scan_done(struct net_device *dev)
@@ -335,10 +300,8 @@ void cfg80211_sme_scan_done(struct net_device *dev)
         wdev_unlock(wdev);
 }
 
-void cfg80211_sme_rx_auth(struct net_device *dev,
-                          const u8 *buf, size_t len)
+void cfg80211_sme_rx_auth(struct wireless_dev *wdev, const u8 *buf, size_t len)
 {
-        struct wireless_dev *wdev = dev->ieee80211_ptr;
         struct wiphy *wiphy = wdev->wiphy;
         struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
         struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *)buf;
@@ -346,11 +309,7 @@ void cfg80211_sme_rx_auth(struct net_device *dev,
 
         ASSERT_WDEV_LOCK(wdev);
 
-        /* should only RX auth frames when connecting */
-        if (wdev->sme_state != CFG80211_SME_CONNECTING)
-                return;
-
-        if (WARN_ON(!wdev->conn))
+        if (!wdev->conn || wdev->conn->state == CFG80211_CONN_CONNECTED)
                 return;
 
         if (status_code == WLAN_STATUS_NOT_SUPPORTED_AUTH_ALG &&
@@ -379,46 +338,227 @@ void cfg80211_sme_rx_auth(struct net_device *dev,
                 wdev->conn->state = CFG80211_CONN_AUTHENTICATE_NEXT;
                 schedule_work(&rdev->conn_work);
         } else if (status_code != WLAN_STATUS_SUCCESS) {
-                __cfg80211_connect_result(dev, mgmt->bssid, NULL, 0, NULL, 0,
+                __cfg80211_connect_result(wdev->netdev, mgmt->bssid,
+                                          NULL, 0, NULL, 0,
                                           status_code, false, NULL);
-        } else if (wdev->sme_state == CFG80211_SME_CONNECTING &&
-                 wdev->conn->state == CFG80211_CONN_AUTHENTICATING) {
+        } else if (wdev->conn->state == CFG80211_CONN_AUTHENTICATING) {
                 wdev->conn->state = CFG80211_CONN_ASSOCIATE_NEXT;
                 schedule_work(&rdev->conn_work);
         }
 }
 
-bool cfg80211_sme_failed_reassoc(struct wireless_dev *wdev)
+bool cfg80211_sme_rx_assoc_resp(struct wireless_dev *wdev, u16 status)
 {
-        struct wiphy *wiphy = wdev->wiphy;
-        struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
+        struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
 
-        if (WARN_ON(!wdev->conn))
+        if (!wdev->conn)
                 return false;
 
-        if (!wdev->conn->prev_bssid_valid)
+        if (status == WLAN_STATUS_SUCCESS) {
+                wdev->conn->state = CFG80211_CONN_CONNECTED;
                 return false;
+        }
 
-        /*
-         * Some stupid APs don't accept reassoc, so we
-         * need to fall back to trying regular assoc.
-         */
-        wdev->conn->prev_bssid_valid = false;
-        wdev->conn->state = CFG80211_CONN_ASSOCIATE_NEXT;
+        if (wdev->conn->prev_bssid_valid) {
+                /*
+                 * Some stupid APs don't accept reassoc, so we
+                 * need to fall back to trying regular assoc;
+                 * return true so no event is sent to userspace.
+                 */
+                wdev->conn->prev_bssid_valid = false;
+                wdev->conn->state = CFG80211_CONN_ASSOCIATE_NEXT;
+                schedule_work(&rdev->conn_work);
+                return true;
+        }
+
+        wdev->conn->state = CFG80211_CONN_DEAUTH;
         schedule_work(&rdev->conn_work);
+        return false;
+}
 
-        return true;
+void cfg80211_sme_deauth(struct wireless_dev *wdev)
+{
+        cfg80211_sme_free(wdev);
 }
 
-void cfg80211_sme_failed_assoc(struct wireless_dev *wdev)
+void cfg80211_sme_auth_timeout(struct wireless_dev *wdev)
 {
-        struct wiphy *wiphy = wdev->wiphy;
-        struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
+        cfg80211_sme_free(wdev);
+}
 
-        wdev->conn->state = CFG80211_CONN_DEAUTH_ASSOC_FAIL;
+void cfg80211_sme_disassoc(struct wireless_dev *wdev)
+{
+        struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
+
+        if (!wdev->conn)
+                return;
+
+        wdev->conn->state = CFG80211_CONN_DEAUTH;
         schedule_work(&rdev->conn_work);
 }
 
+void cfg80211_sme_assoc_timeout(struct wireless_dev *wdev)
+{
+        cfg80211_sme_disassoc(wdev);
+}
+
+static int cfg80211_sme_connect(struct wireless_dev *wdev,
+                                struct cfg80211_connect_params *connect,
+                                const u8 *prev_bssid)
+{
+        struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
+        struct cfg80211_bss *bss;
+        int err;
+
+        if (!rdev->ops->auth || !rdev->ops->assoc)
+                return -EOPNOTSUPP;
+
+        if (wdev->current_bss)
+                return -EALREADY;
+
+        if (WARN_ON(wdev->conn))
+                return -EINPROGRESS;
+
+        wdev->conn = kzalloc(sizeof(*wdev->conn), GFP_KERNEL);
+        if (!wdev->conn)
+                return -ENOMEM;
+
+        /*
+         * Copy all parameters, and treat explicitly IEs, BSSID, SSID.
+         */
+        memcpy(&wdev->conn->params, connect, sizeof(*connect));
+        if (connect->bssid) {
+                wdev->conn->params.bssid = wdev->conn->bssid;
+                memcpy(wdev->conn->bssid, connect->bssid, ETH_ALEN);
+        }
+
+        if (connect->ie) {
+                wdev->conn->ie = kmemdup(connect->ie, connect->ie_len,
+                                        GFP_KERNEL);
+                wdev->conn->params.ie = wdev->conn->ie;
+                if (!wdev->conn->ie) {
+                        kfree(wdev->conn);
+                        wdev->conn = NULL;
+                        return -ENOMEM;
+                }
+        }
+
+        if (connect->auth_type == NL80211_AUTHTYPE_AUTOMATIC) {
+                wdev->conn->auto_auth = true;
+                /* start with open system ... should mostly work */
+                wdev->conn->params.auth_type =
+                        NL80211_AUTHTYPE_OPEN_SYSTEM;
+        } else {
+                wdev->conn->auto_auth = false;
+        }
+
+        wdev->conn->params.ssid = wdev->ssid;
+        wdev->conn->params.ssid_len = connect->ssid_len;
+
+        /* see if we have the bss already */
+        bss = cfg80211_get_conn_bss(wdev);
+
+        if (prev_bssid) {
+                memcpy(wdev->conn->prev_bssid, prev_bssid, ETH_ALEN);
+                wdev->conn->prev_bssid_valid = true;
+        }
+
+        /* we're good if we have a matching bss struct */
+        if (bss) {
+                wdev->conn->state = CFG80211_CONN_AUTHENTICATE_NEXT;
+                err = cfg80211_conn_do_work(wdev);
+                cfg80211_put_bss(wdev->wiphy, bss);
+        } else {
+                /* otherwise we'll need to scan for the AP first */
+                err = cfg80211_conn_scan(wdev);
+
+                /*
+                 * If we can't scan right now, then we need to scan again
+                 * after the current scan finished, since the parameters
+                 * changed (unless we find a good AP anyway).
+                 */
+                if (err == -EBUSY) {
+                        err = 0;
+                        wdev->conn->state = CFG80211_CONN_SCAN_AGAIN;
+                }
+        }
+
+        if (err)
+                cfg80211_sme_free(wdev);
+
+        return err;
+}
+
+static int cfg80211_sme_disconnect(struct wireless_dev *wdev, u16 reason)
+{
+        struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
+        int err;
+
+        if (!wdev->conn)
+                return 0;
+
+        if (!rdev->ops->deauth)
+                return -EOPNOTSUPP;
+
+        if (wdev->conn->state == CFG80211_CONN_SCANNING ||
+            wdev->conn->state == CFG80211_CONN_SCAN_AGAIN) {
+                err = 0;
+                goto out;
+        }
+
+        /* wdev->conn->params.bssid must be set if > SCANNING */
+        err = cfg80211_mlme_deauth(rdev, wdev->netdev,
+                                   wdev->conn->params.bssid,
+                                   NULL, 0, reason, false);
+ out:
+        cfg80211_sme_free(wdev);
+        return err;
+}
+
+/*
+ * code shared for in-device and software SME
+ */
+
+static bool cfg80211_is_all_idle(void)
+{
+        struct cfg80211_registered_device *rdev;
+        struct wireless_dev *wdev;
+        bool is_all_idle = true;
+
+        /*
+         * All devices must be idle as otherwise if you are actively
+         * scanning some new beacon hints could be learned and would
+         * count as new regulatory hints.
+         */
+        list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
+                list_for_each_entry(wdev, &rdev->wdev_list, list) {
+                        wdev_lock(wdev);
+                        if (wdev->conn || wdev->current_bss)
+                                is_all_idle = false;
+                        wdev_unlock(wdev);
+                }
+        }
+
+        return is_all_idle;
+}
+
+static void disconnect_work(struct work_struct *work)
+{
+        rtnl_lock();
+        if (cfg80211_is_all_idle())
+                regulatory_hint_disconnect();
+        rtnl_unlock();
+}
+
+static DECLARE_WORK(cfg80211_disconnect_work, disconnect_work);
+
+
+/*
+ * API calls for drivers implementing connect/disconnect and
+ * SME event handling
+ */
+
+/* This method must consume bss one way or another */
 void __cfg80211_connect_result(struct net_device *dev, const u8 *bssid,
                                const u8 *req_ie, size_t req_ie_len,
                                const u8 *resp_ie, size_t resp_ie_len,
@@ -434,11 +574,10 @@ void __cfg80211_connect_result(struct net_device *dev, const u8 *bssid,
         ASSERT_WDEV_LOCK(wdev);
 
         if (WARN_ON(wdev->iftype != NL80211_IFTYPE_STATION &&
-                    wdev->iftype != NL80211_IFTYPE_P2P_CLIENT))
-                return;
-
-        if (wdev->sme_state != CFG80211_SME_CONNECTING)
+                    wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)) {
+                cfg80211_put_bss(wdev->wiphy, bss);
                 return;
+        }
 
         nl80211_send_connect_result(wiphy_to_dev(wdev->wiphy), dev,
                                     bssid, req_ie, req_ie_len,
@@ -476,38 +615,30 @@ void __cfg80211_connect_result(struct net_device *dev, const u8 *bssid,
                 wdev->current_bss = NULL;
         }
 
-        if (wdev->conn)
-                wdev->conn->state = CFG80211_CONN_IDLE;
-
         if (status != WLAN_STATUS_SUCCESS) {
-                wdev->sme_state = CFG80211_SME_IDLE;
-                if (wdev->conn)
-                        kfree(wdev->conn->ie);
-                kfree(wdev->conn);
-                wdev->conn = NULL;
                 kfree(wdev->connect_keys);
                 wdev->connect_keys = NULL;
                 wdev->ssid_len = 0;
-                cfg80211_put_bss(wdev->wiphy, bss);
+                if (bss) {
+                        cfg80211_unhold_bss(bss_from_pub(bss));
+                        cfg80211_put_bss(wdev->wiphy, bss);
+                }
                 return;
         }
 
-        if (!bss)
-                bss = cfg80211_get_bss(wdev->wiphy,
-                                       wdev->conn ? wdev->conn->params.channel :
-                                       NULL,
-                                       bssid,
+        if (!bss) {
+                WARN_ON_ONCE(!wiphy_to_dev(wdev->wiphy)->ops->connect);
+                bss = cfg80211_get_bss(wdev->wiphy, NULL, bssid,
                                        wdev->ssid, wdev->ssid_len,
                                        WLAN_CAPABILITY_ESS,
                                        WLAN_CAPABILITY_ESS);
+                if (WARN_ON(!bss))
+                        return;
+                cfg80211_hold_bss(bss_from_pub(bss));
+        }
 
-        if (WARN_ON(!bss))
-                return;
-
-        cfg80211_hold_bss(bss_from_pub(bss));
         wdev->current_bss = bss_from_pub(bss);
 
-        wdev->sme_state = CFG80211_SME_CONNECTED;
         cfg80211_upload_connect_keys(wdev);
 
         rcu_read_lock();
@@ -543,8 +674,6 @@ void cfg80211_connect_result(struct net_device *dev, const u8 *bssid,
         struct cfg80211_event *ev;
         unsigned long flags;
 
-        CFG80211_DEV_WARN_ON(wdev->sme_state != CFG80211_SME_CONNECTING);
-
         ev = kzalloc(sizeof(*ev) + req_ie_len + resp_ie_len, gfp);
         if (!ev)
                 return;
@@ -571,6 +700,7 @@ void cfg80211_connect_result(struct net_device *dev, const u8 *bssid,
 }
 EXPORT_SYMBOL(cfg80211_connect_result);
 
+/* Consumes bss object one way or another */
 void __cfg80211_roamed(struct wireless_dev *wdev,
                        struct cfg80211_bss *bss,
                        const u8 *req_ie, size_t req_ie_len,
@@ -585,14 +715,9 @@ void __cfg80211_roamed(struct wireless_dev *wdev,
                     wdev->iftype != NL80211_IFTYPE_P2P_CLIENT))
                 goto out;
 
-        if (wdev->sme_state != CFG80211_SME_CONNECTED)
+        if (WARN_ON(!wdev->current_bss))
                 goto out;
 
-        /* internal error -- how did we get to CONNECTED w/o BSS? */
-        if (WARN_ON(!wdev->current_bss)) {
-                goto out;
-        }
-
         cfg80211_unhold_bss(wdev->current_bss);
         cfg80211_put_bss(wdev->wiphy, &wdev->current_bss->pub);
         wdev->current_bss = NULL;
@@ -641,8 +766,6 @@ void cfg80211_roamed(struct net_device *dev,
         struct wireless_dev *wdev = dev->ieee80211_ptr;
         struct cfg80211_bss *bss;
 
-        CFG80211_DEV_WARN_ON(wdev->sme_state != CFG80211_SME_CONNECTED);
-
         bss = cfg80211_get_bss(wdev->wiphy, channel, bssid, wdev->ssid,
                                wdev->ssid_len, WLAN_CAPABILITY_ESS,
                                WLAN_CAPABILITY_ESS);
@@ -654,6 +777,7 @@ void cfg80211_roamed(struct net_device *dev,
 }
 EXPORT_SYMBOL(cfg80211_roamed);
 
+/* Consumes bss object one way or another */
 void cfg80211_roamed_bss(struct net_device *dev,
                          struct cfg80211_bss *bss, const u8 *req_ie,
                          size_t req_ie_len, const u8 *resp_ie,
@@ -664,8 +788,6 @@ void cfg80211_roamed_bss(struct net_device *dev,
         struct cfg80211_event *ev;
         unsigned long flags;
 
-        CFG80211_DEV_WARN_ON(wdev->sme_state != CFG80211_SME_CONNECTED);
-
         if (WARN_ON(!bss))
                 return;
 
@@ -707,25 +829,14 @@ void __cfg80211_disconnected(struct net_device *dev, const u8 *ie,
                     wdev->iftype != NL80211_IFTYPE_P2P_CLIENT))
                 return;
 
-        if (wdev->sme_state != CFG80211_SME_CONNECTED)
-                return;
-
         if (wdev->current_bss) {
                 cfg80211_unhold_bss(wdev->current_bss);
                 cfg80211_put_bss(wdev->wiphy, &wdev->current_bss->pub);
         }
 
         wdev->current_bss = NULL;
-        wdev->sme_state = CFG80211_SME_IDLE;
         wdev->ssid_len = 0;
 
-        if (wdev->conn) {
-                kfree(wdev->conn->ie);
-                wdev->conn->ie = NULL;
-                kfree(wdev->conn);
-                wdev->conn = NULL;
-        }
-
         nl80211_send_disconnected(rdev, dev, reason, ie, ie_len, from_ap);
 
         /*
@@ -754,8 +865,6 @@ void cfg80211_disconnected(struct net_device *dev, u16 reason,
         struct cfg80211_event *ev;
         unsigned long flags;
 
-        CFG80211_DEV_WARN_ON(wdev->sme_state != CFG80211_SME_CONNECTED);
-
         ev = kzalloc(sizeof(*ev) + ie_len, gfp);
         if (!ev)
                 return;
@@ -773,21 +882,20 @@ void cfg80211_disconnected(struct net_device *dev, u16 reason,
 }
 EXPORT_SYMBOL(cfg80211_disconnected);
 
-int __cfg80211_connect(struct cfg80211_registered_device *rdev,
-                       struct net_device *dev,
-                       struct cfg80211_connect_params *connect,
-                       struct cfg80211_cached_keys *connkeys,
-                       const u8 *prev_bssid)
+/*
+ * API calls for nl80211/wext compatibility code
+ */
+int cfg80211_connect(struct cfg80211_registered_device *rdev,
+                     struct net_device *dev,
+                     struct cfg80211_connect_params *connect,
+                     struct cfg80211_cached_keys *connkeys,
+                     const u8 *prev_bssid)
 {
         struct wireless_dev *wdev = dev->ieee80211_ptr;
-        struct cfg80211_bss *bss = NULL;
         int err;
 
         ASSERT_WDEV_LOCK(wdev);
 
-        if (wdev->sme_state != CFG80211_SME_IDLE)
-                return -EALREADY;
-
         if (WARN_ON(wdev->connect_keys)) {
                 kfree(wdev->connect_keys);
                 wdev->connect_keys = NULL;
@@ -823,219 +931,43 @@ int __cfg80211_connect(struct cfg80211_registered_device *rdev,
                 }
         }
 
-        if (!rdev->ops->connect) {
-                if (!rdev->ops->auth || !rdev->ops->assoc)
-                        return -EOPNOTSUPP;
-
-                if (WARN_ON(wdev->conn))
-                        return -EINPROGRESS;
-
-                wdev->conn = kzalloc(sizeof(*wdev->conn), GFP_KERNEL);
-                if (!wdev->conn)
-                        return -ENOMEM;
-
-                /*
-                 * Copy all parameters, and treat explicitly IEs, BSSID, SSID.
-                 */
-                memcpy(&wdev->conn->params, connect, sizeof(*connect));
-                if (connect->bssid) {
-                        wdev->conn->params.bssid = wdev->conn->bssid;
-                        memcpy(wdev->conn->bssid, connect->bssid, ETH_ALEN);
-                }
-
-                if (connect->ie) {
-                        wdev->conn->ie = kmemdup(connect->ie, connect->ie_len,
-                                                GFP_KERNEL);
-                        wdev->conn->params.ie = wdev->conn->ie;
-                        if (!wdev->conn->ie) {
-                                kfree(wdev->conn);
-                                wdev->conn = NULL;
-                                return -ENOMEM;
-                        }
-                }
-
-                if (connect->auth_type == NL80211_AUTHTYPE_AUTOMATIC) {
-                        wdev->conn->auto_auth = true;
-                        /* start with open system ... should mostly work */
-                        wdev->conn->params.auth_type =
-                                NL80211_AUTHTYPE_OPEN_SYSTEM;
-                } else {
-                        wdev->conn->auto_auth = false;
-                }
-
-                memcpy(wdev->ssid, connect->ssid, connect->ssid_len);
-                wdev->ssid_len = connect->ssid_len;
-                wdev->conn->params.ssid = wdev->ssid;
-                wdev->conn->params.ssid_len = connect->ssid_len;
-
-                /* see if we have the bss already */
-                bss = cfg80211_get_conn_bss(wdev);
-
-                wdev->sme_state = CFG80211_SME_CONNECTING;
-                wdev->connect_keys = connkeys;
-
-                if (prev_bssid) {
-                        memcpy(wdev->conn->prev_bssid, prev_bssid, ETH_ALEN);
-                        wdev->conn->prev_bssid_valid = true;
-                }
-
-                /* we're good if we have a matching bss struct */
-                if (bss) {
-                        wdev->conn->state = CFG80211_CONN_AUTHENTICATE_NEXT;
-                        err = cfg80211_conn_do_work(wdev);
-                        cfg80211_put_bss(wdev->wiphy, bss);
-                } else {
-                        /* otherwise we'll need to scan for the AP first */
-                        err = cfg80211_conn_scan(wdev);
-                        /*
-                         * If we can't scan right now, then we need to scan again
-                         * after the current scan finished, since the parameters
-                         * changed (unless we find a good AP anyway).
-                         */
-                        if (err == -EBUSY) {
-                                err = 0;
-                                wdev->conn->state = CFG80211_CONN_SCAN_AGAIN;
-                        }
-                }
-                if (err) {
-                        kfree(wdev->conn->ie);
-                        kfree(wdev->conn);
-                        wdev->conn = NULL;
-                        wdev->sme_state = CFG80211_SME_IDLE;
-                        wdev->connect_keys = NULL;
-                        wdev->ssid_len = 0;
-                }
+        wdev->connect_keys = connkeys;
+        memcpy(wdev->ssid, connect->ssid, connect->ssid_len);
+        wdev->ssid_len = connect->ssid_len;
 
-                return err;
-        } else {
-                wdev->sme_state = CFG80211_SME_CONNECTING;
-                wdev->connect_keys = connkeys;
+        if (!rdev->ops->connect)
+                err = cfg80211_sme_connect(wdev, connect, prev_bssid);
+        else
                 err = rdev_connect(rdev, dev, connect);
-                if (err) {
-                        wdev->connect_keys = NULL;
-                        wdev->sme_state = CFG80211_SME_IDLE;
-                        return err;
-                }
-
-                memcpy(wdev->ssid, connect->ssid, connect->ssid_len);
-                wdev->ssid_len = connect->ssid_len;
 
-                return 0;
+        if (err) {
+                wdev->connect_keys = NULL;
+                wdev->ssid_len = 0;
+                return err;
         }
-}
-
-int cfg80211_connect(struct cfg80211_registered_device *rdev,
-                     struct net_device *dev,
-                     struct cfg80211_connect_params *connect,
-                     struct cfg80211_cached_keys *connkeys)
-{
-        int err;
-
-        mutex_lock(&rdev->devlist_mtx);
-        /* might request scan - scan_mtx -> wdev_mtx dependency */
-        mutex_lock(&rdev->sched_scan_mtx);
-        wdev_lock(dev->ieee80211_ptr);
-        err = __cfg80211_connect(rdev, dev, connect, connkeys, NULL);
-        wdev_unlock(dev->ieee80211_ptr);
-        mutex_unlock(&rdev->sched_scan_mtx);
-        mutex_unlock(&rdev->devlist_mtx);
 
-        return err;
+        return 0;
 }
 
-int __cfg80211_disconnect(struct cfg80211_registered_device *rdev,
-                          struct net_device *dev, u16 reason, bool wextev)
+int cfg80211_disconnect(struct cfg80211_registered_device *rdev,
+                        struct net_device *dev, u16 reason, bool wextev)
 {
         struct wireless_dev *wdev = dev->ieee80211_ptr;
         int err;
 
         ASSERT_WDEV_LOCK(wdev);
 
-        if (wdev->sme_state == CFG80211_SME_IDLE)
-                return -EINVAL;
-
         kfree(wdev->connect_keys);
         wdev->connect_keys = NULL;
 
-        if (!rdev->ops->disconnect) {
-                if (!rdev->ops->deauth)
-                        return -EOPNOTSUPP;
-
-                /* was it connected by userspace SME? */
-                if (!wdev->conn) {
-                        cfg80211_mlme_down(rdev, dev);
-                        goto disconnect;
-                }
-
-                if (wdev->sme_state == CFG80211_SME_CONNECTING &&
-                    (wdev->conn->state == CFG80211_CONN_SCANNING ||
-                     wdev->conn->state == CFG80211_CONN_SCAN_AGAIN)) {
-                        wdev->sme_state = CFG80211_SME_IDLE;
-                        kfree(wdev->conn->ie);
-                        kfree(wdev->conn);
-                        wdev->conn = NULL;
-                        wdev->ssid_len = 0;
-                        return 0;
-                }
-
-                /* wdev->conn->params.bssid must be set if > SCANNING */
-                err = __cfg80211_mlme_deauth(rdev, dev,
-                                             wdev->conn->params.bssid,
-                                             NULL, 0, reason, false);
-                if (err)
-                        return err;
+        if (wdev->conn) {
+                err = cfg80211_sme_disconnect(wdev, reason);
+        } else if (!rdev->ops->disconnect) {
+                cfg80211_mlme_down(rdev, dev);
+                err = 0;
         } else {
                 err = rdev_disconnect(rdev, dev, reason);
-                if (err)
-                        return err;
         }
 
- disconnect:
-        if (wdev->sme_state == CFG80211_SME_CONNECTED)
-                __cfg80211_disconnected(dev, NULL, 0, 0, false);
-        else if (wdev->sme_state == CFG80211_SME_CONNECTING)
-                __cfg80211_connect_result(dev, NULL, NULL, 0, NULL, 0,
-                                          WLAN_STATUS_UNSPECIFIED_FAILURE,
-                                          wextev, NULL);
-
-        return 0;
-}
-
-int cfg80211_disconnect(struct cfg80211_registered_device *rdev,
-                        struct net_device *dev,
-                        u16 reason, bool wextev)
-{
-        int err;
-
-        wdev_lock(dev->ieee80211_ptr);
-        err = __cfg80211_disconnect(rdev, dev, reason, wextev);
-        wdev_unlock(dev->ieee80211_ptr);
-
         return err;
 }
-
-void cfg80211_sme_disassoc(struct net_device *dev,
-                           struct cfg80211_internal_bss *bss)
-{
-        struct wireless_dev *wdev = dev->ieee80211_ptr;
-        struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
-        u8 bssid[ETH_ALEN];
-
-        ASSERT_WDEV_LOCK(wdev);
-
-        if (!wdev->conn)
-                return;
-
-        if (wdev->conn->state == CFG80211_CONN_IDLE)
-                return;
-
-        /*
-         * Ok, so the association was made by this SME -- we don't
-         * want it any more so deauthenticate too.
-         */
-
-        memcpy(bssid, bss->pub.bssid, ETH_ALEN);
-
-        __cfg80211_mlme_deauth(rdev, dev, bssid, NULL, 0,
-                               WLAN_REASON_DEAUTH_LEAVING, false);
-}
diff --git a/net/wireless/sysfs.c b/net/wireless/sysfs.c
index 8f28b9f798d8..a23253e06358 100644
--- a/net/wireless/sysfs.c
+++ b/net/wireless/sysfs.c
@@ -83,6 +83,7 @@ static int wiphy_uevent(struct device *dev, struct kobj_uevent_env *env)
         return 0;
 }
 
+#ifdef CONFIG_PM
 static void cfg80211_leave_all(struct cfg80211_registered_device *rdev)
 {
         struct wireless_dev *wdev;
@@ -100,10 +101,10 @@ static int wiphy_suspend(struct device *dev, pm_message_t state)
 
         rtnl_lock();
         if (rdev->wiphy.registered) {
-                if (!rdev->wowlan)
+                if (!rdev->wiphy.wowlan_config)
                         cfg80211_leave_all(rdev);
                 if (rdev->ops->suspend)
-                        ret = rdev_suspend(rdev, rdev->wowlan);
+                        ret = rdev_suspend(rdev, rdev->wiphy.wowlan_config);
                 if (ret == 1) {
                         /* Driver refuse to configure wowlan */
                         cfg80211_leave_all(rdev);
@@ -132,6 +133,7 @@ static int wiphy_resume(struct device *dev)
 
         return ret;
 }
+#endif
 
 static const void *wiphy_namespace(struct device *d)
 {
@@ -146,8 +148,10 @@ struct class ieee80211_class = {
         .dev_release = wiphy_dev_release,
         .dev_attrs = ieee80211_dev_attrs,
         .dev_uevent = wiphy_uevent,
+#ifdef CONFIG_PM
         .suspend = wiphy_suspend,
         .resume = wiphy_resume,
+#endif
         .ns_type = &net_ns_type_operations,
         .namespace = wiphy_namespace,
 };
diff --git a/net/wireless/trace.h b/net/wireless/trace.h
index 5755bc14abbd..e1534baf2ebb 100644
--- a/net/wireless/trace.h
+++ b/net/wireless/trace.h
@@ -1911,24 +1911,46 @@ TRACE_EVENT(cfg80211_send_rx_assoc,
                   NETDEV_PR_ARG, MAC_PR_ARG(bssid), CHAN_PR_ARG)
 );
 
-DEFINE_EVENT(netdev_evt_only, __cfg80211_send_deauth,
-        TP_PROTO(struct net_device *netdev),
-        TP_ARGS(netdev)
+DECLARE_EVENT_CLASS(netdev_frame_event,
+        TP_PROTO(struct net_device *netdev, const u8 *buf, int len),
+        TP_ARGS(netdev, buf, len),
+        TP_STRUCT__entry(
+                NETDEV_ENTRY
+                __dynamic_array(u8, frame, len)
+        ),
+        TP_fast_assign(
+                NETDEV_ASSIGN;
+                memcpy(__get_dynamic_array(frame), buf, len);
+        ),
+        TP_printk(NETDEV_PR_FMT ", ftype:0x%.2x",
+                  NETDEV_PR_ARG,
+                  le16_to_cpup((__le16 *)__get_dynamic_array(frame)))
 );
 
-DEFINE_EVENT(netdev_evt_only, __cfg80211_send_disassoc,
-        TP_PROTO(struct net_device *netdev),
-        TP_ARGS(netdev)
+DEFINE_EVENT(netdev_frame_event, cfg80211_rx_unprot_mlme_mgmt,
+        TP_PROTO(struct net_device *netdev, const u8 *buf, int len),
+        TP_ARGS(netdev, buf, len)
 );
 
-DEFINE_EVENT(netdev_evt_only, cfg80211_send_unprot_deauth,
-        TP_PROTO(struct net_device *netdev),
-        TP_ARGS(netdev)
+DEFINE_EVENT(netdev_frame_event, cfg80211_rx_mlme_mgmt,
+        TP_PROTO(struct net_device *netdev, const u8 *buf, int len),
+        TP_ARGS(netdev, buf, len)
 );
 
-DEFINE_EVENT(netdev_evt_only, cfg80211_send_unprot_disassoc,
-        TP_PROTO(struct net_device *netdev),
-        TP_ARGS(netdev)
+TRACE_EVENT(cfg80211_tx_mlme_mgmt,
+        TP_PROTO(struct net_device *netdev, const u8 *buf, int len),
+        TP_ARGS(netdev, buf, len),
+        TP_STRUCT__entry(
+                NETDEV_ENTRY
+                __dynamic_array(u8, frame, len)
+        ),
+        TP_fast_assign(
+                NETDEV_ASSIGN;
+                memcpy(__get_dynamic_array(frame), buf, len);
+        ),
+        TP_printk(NETDEV_PR_FMT ", ftype:0x%.2x",
+                  NETDEV_PR_ARG,
+                  le16_to_cpup((__le16 *)__get_dynamic_array(frame)))
 );
 
 DECLARE_EVENT_CLASS(netdev_mac_evt,
diff --git a/net/wireless/util.c b/net/wireless/util.c
index f5ad4d94ba88..74458b7f61eb 100644
--- a/net/wireless/util.c
+++ b/net/wireless/util.c
@@ -33,6 +33,29 @@ ieee80211_get_response_rate(struct ieee80211_supported_band *sband,
 }
 EXPORT_SYMBOL(ieee80211_get_response_rate);
 
+u32 ieee80211_mandatory_rates(struct ieee80211_supported_band *sband)
+{
+        struct ieee80211_rate *bitrates;
+        u32 mandatory_rates = 0;
+        enum ieee80211_rate_flags mandatory_flag;
+        int i;
+
+        if (WARN_ON(!sband))
+                return 1;
+
+        if (sband->band == IEEE80211_BAND_2GHZ)
+                mandatory_flag = IEEE80211_RATE_MANDATORY_B;
+        else
+                mandatory_flag = IEEE80211_RATE_MANDATORY_A;
+
+        bitrates = sband->bitrates;
+        for (i = 0; i < sband->n_bitrates; i++)
+                if (bitrates[i].flags & mandatory_flag)
+                        mandatory_rates |= BIT(i);
+        return mandatory_rates;
+}
+EXPORT_SYMBOL(ieee80211_mandatory_rates);
+
 int ieee80211_channel_to_frequency(int chan, enum ieee80211_band band)
 {
         /* see 802.11 17.3.8.3.2 and Annex J
@@ -785,12 +808,8 @@ void cfg80211_process_rdev_events(struct cfg80211_registered_device *rdev)
         ASSERT_RTNL();
         ASSERT_RDEV_LOCK(rdev);
 
-        mutex_lock(&rdev->devlist_mtx);
-
         list_for_each_entry(wdev, &rdev->wdev_list, list)
                 cfg80211_process_wdev_events(wdev);
-
-        mutex_unlock(&rdev->devlist_mtx);
 }
 
 int cfg80211_change_iface(struct cfg80211_registered_device *rdev,
@@ -822,10 +841,8 @@ int cfg80211_change_iface(struct cfg80211_registered_device *rdev,
                 return -EBUSY;
 
         if (ntype != otype && netif_running(dev)) {
-                mutex_lock(&rdev->devlist_mtx);
                 err = cfg80211_can_change_interface(rdev, dev->ieee80211_ptr,
                                                     ntype);
-                mutex_unlock(&rdev->devlist_mtx);
                 if (err)
                         return err;
 
@@ -841,8 +858,10 @@ int cfg80211_change_iface(struct cfg80211_registered_device *rdev,
                         break;
                 case NL80211_IFTYPE_STATION:
                 case NL80211_IFTYPE_P2P_CLIENT:
+                        wdev_lock(dev->ieee80211_ptr);
                         cfg80211_disconnect(rdev, dev,
                                             WLAN_REASON_DEAUTH_LEAVING, true);
+                        wdev_unlock(dev->ieee80211_ptr);
                         break;
                 case NL80211_IFTYPE_MESH_POINT:
                         /* mesh should be handled? */
@@ -1169,6 +1188,9 @@ bool ieee80211_operating_class_to_band(u8 operating_class,
         case 84:
                 *band = IEEE80211_BAND_2GHZ;
                 return true;
+        case 180:
+                *band = IEEE80211_BAND_60GHZ;
+                return true;
         }
 
         return false;
@@ -1184,8 +1206,6 @@ int cfg80211_validate_beacon_int(struct cfg80211_registered_device *rdev,
         if (!beacon_int)
                 return -EINVAL;
 
-        mutex_lock(&rdev->devlist_mtx);
-
         list_for_each_entry(wdev, &rdev->wdev_list, list) {
                 if (!wdev->beacon_interval)
                         continue;
@@ -1195,8 +1215,6 @@ int cfg80211_validate_beacon_int(struct cfg80211_registered_device *rdev,
                 }
         }
 
-        mutex_unlock(&rdev->devlist_mtx);
-
         return res;
 }
 
@@ -1220,7 +1238,6 @@ int cfg80211_can_use_iftype_chan(struct cfg80211_registered_device *rdev,
         int i, j;
 
         ASSERT_RTNL();
-        lockdep_assert_held(&rdev->devlist_mtx);
 
         if (WARN_ON(hweight32(radar_detect) > 1))
                 return -EINVAL;
diff --git a/net/wireless/wext-compat.c b/net/wireless/wext-compat.c
index d997d0f0c54a..e7c6e862580d 100644
--- a/net/wireless/wext-compat.c
+++ b/net/wireless/wext-compat.c
@@ -72,7 +72,6 @@ int cfg80211_wext_siwmode(struct net_device *dev, struct iw_request_info *info,
         struct cfg80211_registered_device *rdev;
         struct vif_params vifparams;
         enum nl80211_iftype type;
-        int ret;
 
         rdev = wiphy_to_dev(wdev->wiphy);
 
@@ -98,11 +97,7 @@ int cfg80211_wext_siwmode(struct net_device *dev, struct iw_request_info *info,
 
         memset(&vifparams, 0, sizeof(vifparams));
 
-        cfg80211_lock_rdev(rdev);
-        ret = cfg80211_change_iface(rdev, dev, type, NULL, &vifparams);
-        cfg80211_unlock_rdev(rdev);
-
-        return ret;
+        return cfg80211_change_iface(rdev, dev, type, NULL, &vifparams);
 }
 EXPORT_SYMBOL_GPL(cfg80211_wext_siwmode);
 
@@ -579,13 +574,10 @@ static int cfg80211_set_encryption(struct cfg80211_registered_device *rdev,
 {
         int err;
 
-        /* devlist mutex needed for possible IBSS re-join */
-        mutex_lock(&rdev->devlist_mtx);
         wdev_lock(dev->ieee80211_ptr);
         err = __cfg80211_set_encryption(rdev, dev, pairwise, addr,
                                         remove, tx_key, idx, params);
         wdev_unlock(dev->ieee80211_ptr);
-        mutex_unlock(&rdev->devlist_mtx);
 
         return err;
 }
@@ -787,7 +779,7 @@ static int cfg80211_wext_siwfreq(struct net_device *dev,
         struct cfg80211_chan_def chandef = {
                 .width = NL80211_CHAN_WIDTH_20_NOHT,
         };
-        int freq, err;
+        int freq;
 
         switch (wdev->iftype) {
         case NL80211_IFTYPE_STATION:
@@ -804,10 +796,7 @@ static int cfg80211_wext_siwfreq(struct net_device *dev,
                 chandef.chan = ieee80211_get_channel(&rdev->wiphy, freq);
                 if (!chandef.chan)
                         return -EINVAL;
-                mutex_lock(&rdev->devlist_mtx);
-                err = cfg80211_set_monitor_channel(rdev, &chandef);
-                mutex_unlock(&rdev->devlist_mtx);
-                return err;
+                return cfg80211_set_monitor_channel(rdev, &chandef);
         case NL80211_IFTYPE_MESH_POINT:
                 freq = cfg80211_wext_freq(wdev->wiphy, wextfreq);
                 if (freq < 0)
@@ -818,10 +807,7 @@ static int cfg80211_wext_siwfreq(struct net_device *dev,
                 chandef.chan = ieee80211_get_channel(&rdev->wiphy, freq);
                 if (!chandef.chan)
                         return -EINVAL;
-                mutex_lock(&rdev->devlist_mtx);
-                err = cfg80211_set_mesh_channel(rdev, wdev, &chandef);
-                mutex_unlock(&rdev->devlist_mtx);
-                return err;
+                return cfg80211_set_mesh_channel(rdev, wdev, &chandef);
         default:
                 return -EOPNOTSUPP;
         }
diff --git a/net/wireless/wext-sme.c b/net/wireless/wext-sme.c
index e79cb5c0655a..14c9a2583ba0 100644
--- a/net/wireless/wext-sme.c
+++ b/net/wireless/wext-sme.c
@@ -54,8 +54,8 @@ int cfg80211_mgd_wext_connect(struct cfg80211_registered_device *rdev,
         if (wdev->wext.prev_bssid_valid)
                 prev_bssid = wdev->wext.prev_bssid;
 
-        err = __cfg80211_connect(rdev, wdev->netdev,
-                                 &wdev->wext.connect, ck, prev_bssid);
+        err = cfg80211_connect(rdev, wdev->netdev,
+                               &wdev->wext.connect, ck, prev_bssid);
         if (err)
                 kfree(ck);
 
@@ -87,12 +87,9 @@ int cfg80211_mgd_wext_siwfreq(struct net_device *dev,
                         return -EINVAL;
         }
 
-        cfg80211_lock_rdev(rdev);
-        mutex_lock(&rdev->devlist_mtx);
-        mutex_lock(&rdev->sched_scan_mtx);
         wdev_lock(wdev);
 
-        if (wdev->sme_state != CFG80211_SME_IDLE) {
+        if (wdev->conn) {
                 bool event = true;
 
                 if (wdev->wext.connect.channel == chan) {
@@ -103,8 +100,8 @@ int cfg80211_mgd_wext_siwfreq(struct net_device *dev,
                 /* if SSID set, we'll try right again, avoid event */
                 if (wdev->wext.connect.ssid_len)
                         event = false;
-                err = __cfg80211_disconnect(rdev, dev,
-                                            WLAN_REASON_DEAUTH_LEAVING, event);
+                err = cfg80211_disconnect(rdev, dev,
+                                          WLAN_REASON_DEAUTH_LEAVING, event);
                 if (err)
                         goto out;
         }
@@ -136,9 +133,6 @@ int cfg80211_mgd_wext_siwfreq(struct net_device *dev,
         err = cfg80211_mgd_wext_connect(rdev, wdev);
  out:
         wdev_unlock(wdev);
-        mutex_unlock(&rdev->sched_scan_mtx);
-        mutex_unlock(&rdev->devlist_mtx);
-        cfg80211_unlock_rdev(rdev);
         return err;
 }
 
@@ -190,14 +184,11 @@ int cfg80211_mgd_wext_siwessid(struct net_device *dev,
         if (len > 0 && ssid[len - 1] == '\0')
                 len--;
 
-        cfg80211_lock_rdev(rdev);
-        mutex_lock(&rdev->devlist_mtx);
-        mutex_lock(&rdev->sched_scan_mtx);
         wdev_lock(wdev);
 
         err = 0;
 
-        if (wdev->sme_state != CFG80211_SME_IDLE) {
+        if (wdev->conn) {
                 bool event = true;
 
                 if (wdev->wext.connect.ssid && len &&
@@ -208,8 +199,8 @@ int cfg80211_mgd_wext_siwessid(struct net_device *dev,
                 /* if SSID set now, we'll try to connect, avoid event */
                 if (len)
                         event = false;
-                err = __cfg80211_disconnect(rdev, dev,
-                                            WLAN_REASON_DEAUTH_LEAVING, event);
+                err = cfg80211_disconnect(rdev, dev,
+                                          WLAN_REASON_DEAUTH_LEAVING, event);
                 if (err)
                         goto out;
         }
@@ -226,9 +217,6 @@ int cfg80211_mgd_wext_siwessid(struct net_device *dev,
         err = cfg80211_mgd_wext_connect(rdev, wdev);
  out:
         wdev_unlock(wdev);
-        mutex_unlock(&rdev->sched_scan_mtx);
-        mutex_unlock(&rdev->devlist_mtx);
-        cfg80211_unlock_rdev(rdev);
         return err;
 }
 
@@ -287,12 +275,9 @@ int cfg80211_mgd_wext_siwap(struct net_device *dev,
         if (is_zero_ether_addr(bssid) || is_broadcast_ether_addr(bssid))
                 bssid = NULL;
 
-        cfg80211_lock_rdev(rdev);
-        mutex_lock(&rdev->devlist_mtx);
-        mutex_lock(&rdev->sched_scan_mtx);
         wdev_lock(wdev);
 
-        if (wdev->sme_state != CFG80211_SME_IDLE) {
+        if (wdev->conn) {
                 err = 0;
                 /* both automatic */
                 if (!bssid && !wdev->wext.connect.bssid)
@@ -303,8 +288,8 @@ int cfg80211_mgd_wext_siwap(struct net_device *dev,
                     ether_addr_equal(bssid, wdev->wext.connect.bssid))
                         goto out;
 
-                err = __cfg80211_disconnect(rdev, dev,
-                                            WLAN_REASON_DEAUTH_LEAVING, false);
+                err = cfg80211_disconnect(rdev, dev,
+                                          WLAN_REASON_DEAUTH_LEAVING, false);
                 if (err)
                         goto out;
         }
@@ -318,9 +303,6 @@ int cfg80211_mgd_wext_siwap(struct net_device *dev,
         err = cfg80211_mgd_wext_connect(rdev, wdev);
  out:
         wdev_unlock(wdev);
-        mutex_unlock(&rdev->sched_scan_mtx);
-        mutex_unlock(&rdev->devlist_mtx);
-        cfg80211_unlock_rdev(rdev);
         return err;
 }
 
@@ -382,9 +364,9 @@ int cfg80211_wext_siwgenie(struct net_device *dev,
         wdev->wext.ie = ie;
         wdev->wext.ie_len = ie_len;
 
-        if (wdev->sme_state != CFG80211_SME_IDLE) {
-                err = __cfg80211_disconnect(rdev, dev,
-                                            WLAN_REASON_DEAUTH_LEAVING, false);
+        if (wdev->conn) {
+                err = cfg80211_disconnect(rdev, dev,
+                                          WLAN_REASON_DEAUTH_LEAVING, false);
                 if (err)
                         goto out;
         }
@@ -420,8 +402,7 @@ int cfg80211_wext_siwmlme(struct net_device *dev,
         switch (mlme->cmd) {
         case IW_MLME_DEAUTH:
         case IW_MLME_DISASSOC:
-                err = __cfg80211_disconnect(rdev, dev, mlme->reason_code,
-                                            true);
+                err = cfg80211_disconnect(rdev, dev, mlme->reason_code, true);
                 break;
         default:
                 err = -EOPNOTSUPP;
diff --git a/net/x25/af_x25.c b/net/x25/af_x25.c
index 37ca9694aabe..45a3ab5612c1 100644
--- a/net/x25/af_x25.c
+++ b/net/x25/af_x25.c
@@ -224,7 +224,7 @@ static void x25_kill_by_device(struct net_device *dev)
 static int x25_device_event(struct notifier_block *this, unsigned long event,
                             void *ptr)
 {
-        struct net_device *dev = ptr;
+        struct net_device *dev = netdev_notifier_info_to_dev(ptr);
         struct x25_neigh *nb;
 
         if (!net_eq(dev_net(dev), &init_net))
@@ -1583,11 +1583,11 @@ out_cud_release:
         case SIOCX25CALLACCPTAPPRV: {
                 rc = -EINVAL;
                 lock_sock(sk);
-                if (sk->sk_state != TCP_CLOSE)
-                        break;
-                clear_bit(X25_ACCPT_APPRV_FLAG, &x25->flags);
+                if (sk->sk_state == TCP_CLOSE) {
+                        clear_bit(X25_ACCPT_APPRV_FLAG, &x25->flags);
+                        rc = 0;
+                }
                 release_sock(sk);
-                rc = 0;
                 break;
         }
 
@@ -1595,14 +1595,15 @@ out_cud_release:
                 rc = -EINVAL;
                 lock_sock(sk);
                 if (sk->sk_state != TCP_ESTABLISHED)
-                        break;
+                        goto out_sendcallaccpt_release;
                 /* must call accptapprv above */
                 if (test_bit(X25_ACCPT_APPRV_FLAG, &x25->flags))
-                        break;
+                        goto out_sendcallaccpt_release;
                 x25_write_internal(sk, X25_CALL_ACCEPTED);
                 x25->state = X25_STATE_3;
-                release_sock(sk);
                 rc = 0;
+out_sendcallaccpt_release:
+                release_sock(sk);
                 break;
         }
 
diff --git a/net/xfrm/xfrm_input.c b/net/xfrm/xfrm_input.c
index ab2bb42fe094..88843996f935 100644
--- a/net/xfrm/xfrm_input.c
+++ b/net/xfrm/xfrm_input.c
@@ -163,6 +163,11 @@ int xfrm_input(struct sk_buff *skb, int nexthdr, __be32 spi, int encap_type)
                 skb->sp->xvec[skb->sp->len++] = x;
 
                 spin_lock(&x->lock);
+                if (unlikely(x->km.state == XFRM_STATE_ACQ)) {
+                        XFRM_INC_STATS(net, LINUX_MIB_XFRMACQUIREERROR);
+                        goto drop_unlock;
+                }
+
                 if (unlikely(x->km.state != XFRM_STATE_VALID)) {
                         XFRM_INC_STATS(net, LINUX_MIB_XFRMINSTATEINVALID);
                         goto drop_unlock;
diff --git a/net/xfrm/xfrm_output.c b/net/xfrm/xfrm_output.c
index 0cf003dfa8fc..eb4a84288648 100644
--- a/net/xfrm/xfrm_output.c
+++ b/net/xfrm/xfrm_output.c
@@ -89,7 +89,7 @@ static int xfrm_output_one(struct sk_buff *skb, int err)
 
                 err = x->type->output(x, skb);
                 if (err == -EINPROGRESS)
-                        goto out_exit;
+                        goto out;
 
 resume:
                 if (err) {
@@ -107,15 +107,14 @@ resume:
                 x = dst->xfrm;
         } while (x && !(x->outer_mode->flags & XFRM_MODE_FLAG_TUNNEL));
 
-        err = 0;
+        return 0;
 
-out_exit:
-        return err;
 error:
         spin_unlock_bh(&x->lock);
 error_nolock:
         kfree_skb(skb);
-        goto out_exit;
+out:
+        return err;
 }
 
 int xfrm_output_resume(struct sk_buff *skb, int err)
diff --git a/net/xfrm/xfrm_policy.c b/net/xfrm/xfrm_policy.c
index ea970b8002a2..e52cab3591dd 100644
--- a/net/xfrm/xfrm_policy.c
+++ b/net/xfrm/xfrm_policy.c
@@ -2785,7 +2785,7 @@ static void __net_init xfrm_dst_ops_init(struct net *net)
 
 static int xfrm_dev_event(struct notifier_block *this, unsigned long event, void *ptr)
 {
-        struct net_device *dev = ptr;
+        struct net_device *dev = netdev_notifier_info_to_dev(ptr);
 
         switch (event) {
         case NETDEV_DOWN:
diff --git a/net/xfrm/xfrm_proc.c b/net/xfrm/xfrm_proc.c
index c721b0d9ab8b..80cd1e55b834 100644
--- a/net/xfrm/xfrm_proc.c
+++ b/net/xfrm/xfrm_proc.c
@@ -44,6 +44,7 @@ static const struct snmp_mib xfrm_mib_list[] = {
         SNMP_MIB_ITEM("XfrmOutPolError", LINUX_MIB_XFRMOUTPOLERROR),
         SNMP_MIB_ITEM("XfrmFwdHdrError", LINUX_MIB_XFRMFWDHDRERROR),
         SNMP_MIB_ITEM("XfrmOutStateInvalid", LINUX_MIB_XFRMOUTSTATEINVALID),
+        SNMP_MIB_ITEM("XfrmAcquireError", LINUX_MIB_XFRMACQUIREERROR),
         SNMP_MIB_SENTINEL
 };