166 files changed, 5404 insertions, 2308 deletions

diff --git a/net/appletalk/ddp.c b/net/appletalk/ddp.c
index 7982656b9c83..a5144e43aae1 100644
--- a/net/appletalk/ddp.c
+++ b/net/appletalk/ddp.c
@@ -63,7 +63,7 @@
 #include <linux/atalk.h>
 
 struct datalink_proto *ddp_dl, *aarp_dl;
-static struct proto_ops atalk_dgram_ops;
+static const struct proto_ops atalk_dgram_ops;
 
 /**************************************************************************\
 *                                                                          *
@@ -1763,7 +1763,7 @@ static int atalk_recvmsg(struct kiocb *iocb, struct socket *sock, struct msghdr
  */
 static int atalk_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg)
 {
-        int rc = -EINVAL;
+        int rc = -ENOIOCTLCMD;
         struct sock *sk = sock->sk;
         void __user *argp = (void __user *)arg;
 
@@ -1813,23 +1813,6 @@ static int atalk_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg)
                         rc = atif_ioctl(cmd, argp);
                         rtnl_unlock();
                         break;
-                /* Physical layer ioctl calls */
-                case SIOCSIFLINK:
-                case SIOCGIFHWADDR:
-                case SIOCSIFHWADDR:
-                case SIOCGIFFLAGS:
-                case SIOCSIFFLAGS:
-                case SIOCGIFTXQLEN:
-                case SIOCSIFTXQLEN:
-                case SIOCGIFMTU:
-                case SIOCGIFCONF:
-                case SIOCADDMULTI:
-                case SIOCDELMULTI:
-                case SIOCGIFCOUNT:
-                case SIOCGIFINDEX:
-                case SIOCGIFNAME:
-                        rc = dev_ioctl(cmd, argp);
-                        break;
         }
 
         return rc;
@@ -1841,7 +1824,7 @@ static struct net_proto_family atalk_family_ops = {
         .owner          = THIS_MODULE,
 };
 
-static struct proto_ops SOCKOPS_WRAPPED(atalk_dgram_ops) = {
+static const struct proto_ops SOCKOPS_WRAPPED(atalk_dgram_ops) = {
         .family         = PF_APPLETALK,
         .owner          = THIS_MODULE,
         .release        = atalk_release,
diff --git a/net/atm/pvc.c b/net/atm/pvc.c
index 2684a92da22b..f2c541774dcd 100644
--- a/net/atm/pvc.c
+++ b/net/atm/pvc.c
@@ -102,7 +102,7 @@ static int pvc_getname(struct socket *sock,struct sockaddr *sockaddr,
 }
 
 
-static struct proto_ops pvc_proto_ops = {
+static const struct proto_ops pvc_proto_ops = {
         .family =       PF_ATMPVC,
         .owner =        THIS_MODULE,
 
diff --git a/net/atm/svc.c b/net/atm/svc.c
index d7b266136bf6..3a180cfd7b48 100644
--- a/net/atm/svc.c
+++ b/net/atm/svc.c
@@ -613,7 +613,7 @@ static int svc_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg)
         return error;
 }
 
-static struct proto_ops svc_proto_ops = {
+static const struct proto_ops svc_proto_ops = {
         .family =       PF_ATMSVC,
         .owner =        THIS_MODULE,
 
diff --git a/net/ax25/af_ax25.c b/net/ax25/af_ax25.c
index 1b683f302657..e8753c7fcad1 100644
--- a/net/ax25/af_ax25.c
+++ b/net/ax25/af_ax25.c
@@ -54,7 +54,7 @@
 HLIST_HEAD(ax25_list);
 DEFINE_SPINLOCK(ax25_list_lock);
 
-static struct proto_ops ax25_proto_ops;
+static const struct proto_ops ax25_proto_ops;
 
 static void ax25_free_sock(struct sock *sk)
 {
@@ -1827,7 +1827,7 @@ static int ax25_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg)
                 break;
 
         default:
-                res = dev_ioctl(cmd, argp);
+                res = -ENOIOCTLCMD;
                 break;
         }
         release_sock(sk);
@@ -1944,7 +1944,7 @@ static struct net_proto_family ax25_family_ops = {
         .owner  =       THIS_MODULE,
 };
 
-static struct proto_ops ax25_proto_ops = {
+static const struct proto_ops ax25_proto_ops = {
         .family         = PF_AX25,
         .owner          = THIS_MODULE,
         .release        = ax25_release,
diff --git a/net/bluetooth/af_bluetooth.c b/net/bluetooth/af_bluetooth.c
index ea616e3fc98e..fb031fe9be9e 100644
--- a/net/bluetooth/af_bluetooth.c
+++ b/net/bluetooth/af_bluetooth.c
@@ -287,10 +287,9 @@ int bt_sock_wait_state(struct sock *sk, int state, unsigned long timeo)
                 timeo = schedule_timeout(timeo);
                 lock_sock(sk);
 
-                if (sk->sk_err) {
-                        err = sock_error(sk);
+                err = sock_error(sk);
+                if (err)
                         break;
-                }
         }
         set_current_state(TASK_RUNNING);
         remove_wait_queue(sk->sk_sleep, &wait);
diff --git a/net/bluetooth/bnep/sock.c b/net/bluetooth/bnep/sock.c
index 9778c6acd53b..ccbaf69afc5b 100644
--- a/net/bluetooth/bnep/sock.c
+++ b/net/bluetooth/bnep/sock.c
@@ -146,7 +146,7 @@ static int bnep_sock_ioctl(struct socket *sock, unsigned int cmd, unsigned long
         return 0;
 }
 
-static struct proto_ops bnep_sock_ops = {
+static const struct proto_ops bnep_sock_ops = {
         .family     = PF_BLUETOOTH,
         .owner      = THIS_MODULE,
         .release    = bnep_sock_release,
diff --git a/net/bluetooth/cmtp/sock.c b/net/bluetooth/cmtp/sock.c
index beb045bf5714..5e22343b6090 100644
--- a/net/bluetooth/cmtp/sock.c
+++ b/net/bluetooth/cmtp/sock.c
@@ -137,7 +137,7 @@ static int cmtp_sock_ioctl(struct socket *sock, unsigned int cmd, unsigned long
         return -EINVAL;
 }
 
-static struct proto_ops cmtp_sock_ops = {
+static const struct proto_ops cmtp_sock_ops = {
         .family         = PF_BLUETOOTH,
         .owner          = THIS_MODULE,
         .release        = cmtp_sock_release,
diff --git a/net/bluetooth/hci_sock.c b/net/bluetooth/hci_sock.c
index 1d6d0a15c099..84e6c93a044a 100644
--- a/net/bluetooth/hci_sock.c
+++ b/net/bluetooth/hci_sock.c
@@ -575,7 +575,7 @@ static int hci_sock_getsockopt(struct socket *sock, int level, int optname, char
         return 0;
 }
 
-static struct proto_ops hci_sock_ops = {
+static const struct proto_ops hci_sock_ops = {
         .family         = PF_BLUETOOTH,
         .owner          = THIS_MODULE,
         .release        = hci_sock_release,
diff --git a/net/bluetooth/hidp/sock.c b/net/bluetooth/hidp/sock.c
index f8986f881431..8f8dd931b294 100644
--- a/net/bluetooth/hidp/sock.c
+++ b/net/bluetooth/hidp/sock.c
@@ -143,7 +143,7 @@ static int hidp_sock_ioctl(struct socket *sock, unsigned int cmd, unsigned long
         return -EINVAL;
 }
 
-static struct proto_ops hidp_sock_ops = {
+static const struct proto_ops hidp_sock_ops = {
         .family         = PF_BLUETOOTH,
         .owner          = THIS_MODULE,
         .release        = hidp_sock_release,
diff --git a/net/bluetooth/l2cap.c b/net/bluetooth/l2cap.c
index e3bb11ca4235..7f0781e4326f 100644
--- a/net/bluetooth/l2cap.c
+++ b/net/bluetooth/l2cap.c
@@ -57,7 +57,7 @@
 
 #define VERSION "2.8"
 
-static struct proto_ops l2cap_sock_ops;
+static const struct proto_ops l2cap_sock_ops;
 
 static struct bt_sock_list l2cap_sk_list = {
         .lock = RW_LOCK_UNLOCKED
@@ -767,8 +767,9 @@ static int l2cap_sock_sendmsg(struct kiocb *iocb, struct socket *sock, struct ms
 
         BT_DBG("sock %p, sk %p", sock, sk);
 
-        if (sk->sk_err)
-                return sock_error(sk);
+        err = sock_error(sk);
+        if (err)
+                return err;
 
         if (msg->msg_flags & MSG_OOB)
                 return -EOPNOTSUPP;
@@ -2160,7 +2161,7 @@ static ssize_t l2cap_sysfs_show(struct class *dev, char *buf)
 
 static CLASS_ATTR(l2cap, S_IRUGO, l2cap_sysfs_show, NULL);
 
-static struct proto_ops l2cap_sock_ops = {
+static const struct proto_ops l2cap_sock_ops = {
         .family         = PF_BLUETOOTH,
         .owner          = THIS_MODULE,
         .release        = l2cap_sock_release,
diff --git a/net/bluetooth/rfcomm/sock.c b/net/bluetooth/rfcomm/sock.c
index 6c34261b232e..757d2dd3b02f 100644
--- a/net/bluetooth/rfcomm/sock.c
+++ b/net/bluetooth/rfcomm/sock.c
@@ -58,7 +58,7 @@
 #define BT_DBG(D...)
 #endif
 
-static struct proto_ops rfcomm_sock_ops;
+static const struct proto_ops rfcomm_sock_ops;
 
 static struct bt_sock_list rfcomm_sk_list = {
         .lock = RW_LOCK_UNLOCKED
@@ -907,7 +907,7 @@ static ssize_t rfcomm_sock_sysfs_show(struct class *dev, char *buf)
 
 static CLASS_ATTR(rfcomm, S_IRUGO, rfcomm_sock_sysfs_show, NULL);
 
-static struct proto_ops rfcomm_sock_ops = {
+static const struct proto_ops rfcomm_sock_ops = {
         .family         = PF_BLUETOOTH,
         .owner          = THIS_MODULE,
         .release        = rfcomm_sock_release,
diff --git a/net/bluetooth/sco.c b/net/bluetooth/sco.c
index 9cb00dc6c08c..6b61323ce23c 100644
--- a/net/bluetooth/sco.c
+++ b/net/bluetooth/sco.c
@@ -56,7 +56,7 @@
 
 #define VERSION "0.5"
 
-static struct proto_ops sco_sock_ops;
+static const struct proto_ops sco_sock_ops;
 
 static struct bt_sock_list sco_sk_list = {
         .lock = RW_LOCK_UNLOCKED
@@ -637,8 +637,9 @@ static int sco_sock_sendmsg(struct kiocb *iocb, struct socket *sock,
 
         BT_DBG("sock %p, sk %p", sock, sk);
 
-        if (sk->sk_err)
-                return sock_error(sk);
+        err = sock_error(sk);
+        if (err)
+                return err;
 
         if (msg->msg_flags & MSG_OOB)
                 return -EOPNOTSUPP;
@@ -913,7 +914,7 @@ static ssize_t sco_sysfs_show(struct class *dev, char *buf)
 
 static CLASS_ATTR(sco, S_IRUGO, sco_sysfs_show, NULL);
 
-static struct proto_ops sco_sock_ops = {
+static const struct proto_ops sco_sock_ops = {
         .family         = PF_BLUETOOTH,
         .owner          = THIS_MODULE,
         .release        = sco_sock_release,
diff --git a/net/bridge/br.c b/net/bridge/br.c
index f8f184942aaf..188cc1ac49eb 100644
--- a/net/bridge/br.c
+++ b/net/bridge/br.c
@@ -67,3 +67,4 @@ EXPORT_SYMBOL(br_should_route_hook);
 module_init(br_init)
 module_exit(br_deinit)
 MODULE_LICENSE("GPL");
+MODULE_VERSION(BR_VERSION);
diff --git a/net/bridge/br_device.c b/net/bridge/br_device.c
index f564ee99782d..0b33a7b3a00c 100644
--- a/net/bridge/br_device.c
+++ b/net/bridge/br_device.c
@@ -15,7 +15,9 @@
 
 #include <linux/kernel.h>
 #include <linux/netdevice.h>
-#include <linux/module.h>
+#include <linux/etherdevice.h>
+#include <linux/ethtool.h>
+
 #include <asm/uaccess.h>
 #include "br_private.h"
 
@@ -82,6 +84,87 @@ static int br_change_mtu(struct net_device *dev, int new_mtu)
         return 0;
 }
 
+/* Allow setting mac address of pseudo-bridge to be same as
+ * any of the bound interfaces
+ */
+static int br_set_mac_address(struct net_device *dev, void *p)
+{
+        struct net_bridge *br = netdev_priv(dev);
+        struct sockaddr *addr = p;
+        struct net_bridge_port *port;
+        int err = -EADDRNOTAVAIL;
+
+        spin_lock_bh(&br->lock);
+        list_for_each_entry(port, &br->port_list, list) {
+                if (!compare_ether_addr(port->dev->dev_addr, addr->sa_data)) {
+                        br_stp_change_bridge_id(br, addr->sa_data);
+                        err = 0;
+                        break;
+                }
+        }
+        spin_unlock_bh(&br->lock);
+
+        return err;
+}
+
+static void br_getinfo(struct net_device *dev, struct ethtool_drvinfo *info)
+{
+        strcpy(info->driver, "bridge");
+        strcpy(info->version, BR_VERSION);
+        strcpy(info->fw_version, "N/A");
+        strcpy(info->bus_info, "N/A");
+}
+
+static int br_set_sg(struct net_device *dev, u32 data)
+{
+        struct net_bridge *br = netdev_priv(dev);
+
+        if (data)
+                br->feature_mask |= NETIF_F_SG;
+        else
+                br->feature_mask &= ~NETIF_F_SG;
+
+        br_features_recompute(br);
+        return 0;
+}
+
+static int br_set_tso(struct net_device *dev, u32 data)
+{
+        struct net_bridge *br = netdev_priv(dev);
+
+        if (data)
+                br->feature_mask |= NETIF_F_TSO;
+        else
+                br->feature_mask &= ~NETIF_F_TSO;
+
+        br_features_recompute(br);
+        return 0;
+}
+
+static int br_set_tx_csum(struct net_device *dev, u32 data)
+{
+        struct net_bridge *br = netdev_priv(dev);
+
+        if (data)
+                br->feature_mask |= NETIF_F_IP_CSUM;
+        else
+                br->feature_mask &= ~NETIF_F_IP_CSUM;
+
+        br_features_recompute(br);
+        return 0;
+}
+
+static struct ethtool_ops br_ethtool_ops = {
+        .get_drvinfo = br_getinfo,
+        .get_link = ethtool_op_get_link,
+        .get_sg = ethtool_op_get_sg,
+        .set_sg = br_set_sg,
+        .get_tx_csum = ethtool_op_get_tx_csum,
+        .set_tx_csum = br_set_tx_csum,
+        .get_tso = ethtool_op_get_tso,
+        .set_tso = br_set_tso,
+};
+
 void br_dev_setup(struct net_device *dev)
 {
         memset(dev->dev_addr, 0, ETH_ALEN);
@@ -96,8 +179,12 @@ void br_dev_setup(struct net_device *dev)
         dev->change_mtu = br_change_mtu;
         dev->destructor = free_netdev;
         SET_MODULE_OWNER(dev);
+        SET_ETHTOOL_OPS(dev, &br_ethtool_ops);
         dev->stop = br_dev_stop;
         dev->tx_queue_len = 0;
-        dev->set_mac_address = NULL;
+        dev->set_mac_address = br_set_mac_address;
         dev->priv_flags = IFF_EBRIDGE;
+
+        dev->features = NETIF_F_SG | NETIF_F_FRAGLIST
+                | NETIF_F_HIGHDMA | NETIF_F_TSO | NETIF_F_IP_CSUM;
 }
diff --git a/net/bridge/br_if.c b/net/bridge/br_if.c
index 975abe254b7a..11321197338e 100644
--- a/net/bridge/br_if.c
+++ b/net/bridge/br_if.c
@@ -32,9 +32,8 @@
  * ethtool, use ethtool_ops.  Also, since driver might sleep need to
  * not be holding any locks.
  */
-static int br_initial_port_cost(struct net_device *dev)
+static int port_cost(struct net_device *dev)
 {
-
         struct ethtool_cmd ecmd = { ETHTOOL_GSET };
         struct ifreq ifr;
         mm_segment_t old_fs;
@@ -58,10 +57,6 @@ static int br_initial_port_cost(struct net_device *dev)
                         return 2;
                 case SPEED_10:
                         return 100;
-                default:
-                        pr_info("bridge: can't decode speed from %s: %d\n",
-                                dev->name, ecmd.speed);
-                        return 100;
                 }
         }
 
@@ -75,6 +70,35 @@ static int br_initial_port_cost(struct net_device *dev)
         return 100;     /* assume old 10Mbps */
 }
 
+
+/*
+ * Check for port carrier transistions.
+ * Called from work queue to allow for calling functions that
+ * might sleep (such as speed check), and to debounce.
+ */
+static void port_carrier_check(void *arg)
+{
+        struct net_bridge_port *p = arg;
+
+        rtnl_lock();
+        if (netif_carrier_ok(p->dev)) {
+                u32 cost = port_cost(p->dev);
+
+                spin_lock_bh(&p->br->lock);
+                if (p->state == BR_STATE_DISABLED) {
+                        p->path_cost = cost;
+                        br_stp_enable_port(p);
+                }
+                spin_unlock_bh(&p->br->lock);
+        } else {
+                spin_lock_bh(&p->br->lock);
+                if (p->state != BR_STATE_DISABLED)
+                        br_stp_disable_port(p);
+                spin_unlock_bh(&p->br->lock);
+        }
+        rtnl_unlock();
+}
+
 static void destroy_nbp(struct net_bridge_port *p)
 {
         struct net_device *dev = p->dev;
@@ -102,6 +126,9 @@ static void del_nbp(struct net_bridge_port *p)
         dev->br_port = NULL;
         dev_set_promiscuity(dev, -1);
 
+        cancel_delayed_work(&p->carrier_check);
+        flush_scheduled_work();
+
         spin_lock_bh(&br->lock);
         br_stp_disable_port(p);
         spin_unlock_bh(&br->lock);
@@ -155,6 +182,7 @@ static struct net_device *new_bridge_dev(const char *name)
         br->bridge_id.prio[1] = 0x00;
         memset(br->bridge_id.addr, 0, ETH_ALEN);
 
+        br->feature_mask = dev->features;
         br->stp_enabled = 0;
         br->designated_root = br->bridge_id;
         br->root_path_cost = 0;
@@ -195,10 +223,9 @@ static int find_portno(struct net_bridge *br)
         return (index >= BR_MAX_PORTS) ? -EXFULL : index;
 }
 
-/* called with RTNL */
+/* called with RTNL but without bridge lock */
 static struct net_bridge_port *new_nbp(struct net_bridge *br, 
-                                       struct net_device *dev,
-                                       unsigned long cost)
+                                       struct net_device *dev)
 {
         int index;
         struct net_bridge_port *p;
@@ -215,12 +242,13 @@ static struct net_bridge_port *new_nbp(struct net_bridge *br,
         p->br = br;
         dev_hold(dev);
         p->dev = dev;
-        p->path_cost = cost;
+        p->path_cost = port_cost(dev);
         p->priority = 0x8000 >> BR_PORT_BITS;
         dev->br_port = p;
         p->port_no = index;
         br_init_port(p);
         p->state = BR_STATE_DISABLED;
+        INIT_WORK(&p->carrier_check, port_carrier_check, p);
         kobject_init(&p->kobj);
 
         return p;
@@ -322,9 +350,8 @@ void br_features_recompute(struct net_bridge *br)
         struct net_bridge_port *p;
         unsigned long features, checksum;
 
-        features = NETIF_F_SG | NETIF_F_FRAGLIST 
-                | NETIF_F_HIGHDMA | NETIF_F_TSO;
-        checksum = NETIF_F_IP_CSUM;     /* least commmon subset */
+        features = br->feature_mask &~ NETIF_F_IP_CSUM;
+        checksum = br->feature_mask & NETIF_F_IP_CSUM;
 
         list_for_each_entry(p, &br->port_list, list) {
                 if (!(p->dev->features 
@@ -351,7 +378,7 @@ int br_add_if(struct net_bridge *br, struct net_device *dev)
         if (dev->br_port != NULL)
                 return -EBUSY;
 
-        if (IS_ERR(p = new_nbp(br, dev, br_initial_port_cost(dev))))
+        if (IS_ERR(p = new_nbp(br, dev)))
                 return PTR_ERR(p);
 
         if ((err = br_fdb_insert(br, p, dev->dev_addr)))
diff --git a/net/bridge/br_input.c b/net/bridge/br_input.c
index b88220a64cd8..c387852f753a 100644
--- a/net/bridge/br_input.c
+++ b/net/bridge/br_input.c
@@ -53,6 +53,11 @@ int br_handle_frame_finish(struct sk_buff *skb)
         /* insert into forwarding database after filtering to avoid spoofing */
         br_fdb_update(p->br, p, eth_hdr(skb)->h_source);
 
+        if (p->state == BR_STATE_LEARNING) {
+                kfree_skb(skb);
+                goto out;
+        }
+
         if (br->dev->flags & IFF_PROMISC) {
                 struct sk_buff *skb2;
 
@@ -107,9 +112,6 @@ int br_handle_frame(struct net_bridge_port *p, struct sk_buff **pskb)
         if (!is_valid_ether_addr(eth_hdr(skb)->h_source))
                 goto err;
 
-        if (p->state == BR_STATE_LEARNING)
-                br_fdb_update(p->br, p, eth_hdr(skb)->h_source);
-
         if (p->br->stp_enabled &&
             !memcmp(dest, bridge_ula, 5) &&
             !(dest[5] & 0xF0)) {
@@ -118,9 +120,10 @@ int br_handle_frame(struct net_bridge_port *p, struct sk_buff **pskb)
                                 NULL, br_stp_handle_bpdu);
                         return 1;
                 }
+                goto err;
         }
 
-        else if (p->state == BR_STATE_FORWARDING) {
+        if (p->state == BR_STATE_FORWARDING || p->state == BR_STATE_LEARNING) {
                 if (br_should_route_hook) {
                         if (br_should_route_hook(pskb)) 
                                 return 0;
diff --git a/net/bridge/br_netfilter.c b/net/bridge/br_netfilter.c
index 23422bd53a5e..223f8270daee 100644
--- a/net/bridge/br_netfilter.c
+++ b/net/bridge/br_netfilter.c
@@ -26,6 +26,7 @@
 #include <linux/ip.h>
 #include <linux/netdevice.h>
 #include <linux/skbuff.h>
+#include <linux/if_arp.h>
 #include <linux/if_ether.h>
 #include <linux/if_vlan.h>
 #include <linux/netfilter_bridge.h>
@@ -33,8 +34,11 @@
 #include <linux/netfilter_ipv6.h>
 #include <linux/netfilter_arp.h>
 #include <linux/in_route.h>
+
 #include <net/ip.h>
 #include <net/ipv6.h>
+#include <net/route.h>
+
 #include <asm/uaccess.h>
 #include <asm/checksum.h>
 #include "br_private.h"
diff --git a/net/bridge/br_notify.c b/net/bridge/br_notify.c
index 917311c6828b..a43a9c1d50d7 100644
--- a/net/bridge/br_notify.c
+++ b/net/bridge/br_notify.c
@@ -52,17 +52,9 @@ static int br_device_event(struct notifier_block *unused, unsigned long event, v
                 br_stp_recalculate_bridge_id(br);
                 break;
 
-        case NETDEV_CHANGE:     /* device is up but carrier changed */
-                if (!(br->dev->flags & IFF_UP))
-                        break;
-
-                if (netif_carrier_ok(dev)) {
-                        if (p->state == BR_STATE_DISABLED)
-                                br_stp_enable_port(p);
-                } else {
-                        if (p->state != BR_STATE_DISABLED)
-                                br_stp_disable_port(p);
-                }
+        case NETDEV_CHANGE:
+                if (br->dev->flags & IFF_UP)
+                        schedule_delayed_work(&p->carrier_check, BR_PORT_DEBOUNCE);
                 break;
 
         case NETDEV_FEAT_CHANGE:
diff --git a/net/bridge/br_private.h b/net/bridge/br_private.h
index bdf95a74d8cd..c5bd631ffcd5 100644
--- a/net/bridge/br_private.h
+++ b/net/bridge/br_private.h
@@ -27,6 +27,10 @@
 #define BR_PORT_BITS    10
 #define BR_MAX_PORTS    (1<<BR_PORT_BITS)
 
+#define BR_PORT_DEBOUNCE (HZ/10)
+
+#define BR_VERSION      "2.1"
+
 typedef struct bridge_id bridge_id;
 typedef struct mac_addr mac_addr;
 typedef __u16 port_id;
@@ -78,6 +82,7 @@ struct net_bridge_port
         struct timer_list               hold_timer;
         struct timer_list               message_age_timer;
         struct kobject                  kobj;
+        struct work_struct              carrier_check;
         struct rcu_head                 rcu;
 };
 
@@ -90,6 +95,7 @@ struct net_bridge
         spinlock_t                      hash_lock;
         struct hlist_head               hash[BR_HASH_SIZE];
         struct list_head                age_list;
+        unsigned long                   feature_mask;
 
         /* STP */
         bridge_id                       designated_root;
@@ -201,6 +207,7 @@ extern void br_stp_disable_bridge(struct net_bridge *br);
 extern void br_stp_enable_port(struct net_bridge_port *p);
 extern void br_stp_disable_port(struct net_bridge_port *p);
 extern void br_stp_recalculate_bridge_id(struct net_bridge *br);
+extern void br_stp_change_bridge_id(struct net_bridge *br, const unsigned char *a);
 extern void br_stp_set_bridge_priority(struct net_bridge *br,
                                        u16 newprio);
 extern void br_stp_set_port_priority(struct net_bridge_port *p,
diff --git a/net/bridge/br_stp_if.c b/net/bridge/br_stp_if.c
index ac09b6a23523..cc047f7fb6ef 100644
--- a/net/bridge/br_stp_if.c
+++ b/net/bridge/br_stp_if.c
@@ -120,8 +120,7 @@ void br_stp_disable_port(struct net_bridge_port *p)
 }
 
 /* called under bridge lock */
-static void br_stp_change_bridge_id(struct net_bridge *br, 
-                                    const unsigned char *addr)
+void br_stp_change_bridge_id(struct net_bridge *br, const unsigned char *addr)
 {
         unsigned char oldaddr[6];
         struct net_bridge_port *p;
@@ -158,7 +157,7 @@ void br_stp_recalculate_bridge_id(struct net_bridge *br)
 
         list_for_each_entry(p, &br->port_list, list) {
                 if (addr == br_mac_zero ||
-                    compare_ether_addr(p->dev->dev_addr, addr) < 0)
+                    memcmp(p->dev->dev_addr, addr, ETH_ALEN) < 0)
                         addr = p->dev->dev_addr;
 
         }
diff --git a/net/bridge/netfilter/Kconfig b/net/bridge/netfilter/Kconfig
index c70b3be23026..b84fc6075fe1 100644
--- a/net/bridge/netfilter/Kconfig
+++ b/net/bridge/netfilter/Kconfig
@@ -196,9 +196,13 @@ config BRIDGE_EBT_LOG
           To compile it as a module, choose M here.  If unsure, say N.
 
 config BRIDGE_EBT_ULOG
-        tristate "ebt: ulog support"
+        tristate "ebt: ulog support (OBSOLETE)"
         depends on BRIDGE_NF_EBTABLES
         help
+          This option enables the old bridge-specific "ebt_ulog" implementation
+          which has been obsoleted by the new "nfnetlink_log" code (see
+          CONFIG_NETFILTER_NETLINK_LOG).
+
           This option adds the ulog watcher, that you can use in any rule
           in any ebtables table. The packet is passed to a userspace
           logging daemon using netlink multicast sockets. This differs
diff --git a/net/bridge/netfilter/ebt_log.c b/net/bridge/netfilter/ebt_log.c
index 662975be3d1d..9f6e0193ae10 100644
--- a/net/bridge/netfilter/ebt_log.c
+++ b/net/bridge/netfilter/ebt_log.c
@@ -3,13 +3,16 @@
  *
  *      Authors:
  *      Bart De Schuymer <bdschuym@pandora.be>
+ *      Harald Welte <laforge@netfilter.org>
  *
  *  April, 2002
  *
  */
 
+#include <linux/in.h>
 #include <linux/netfilter_bridge/ebtables.h>
 #include <linux/netfilter_bridge/ebt_log.h>
+#include <linux/netfilter.h>
 #include <linux/module.h>
 #include <linux/ip.h>
 #include <linux/if_arp.h>
@@ -55,27 +58,30 @@ static void print_MAC(unsigned char *p)
 }
 
 #define myNIPQUAD(a) a[0], a[1], a[2], a[3]
-static void ebt_log(const struct sk_buff *skb, unsigned int hooknr,
-   const struct net_device *in, const struct net_device *out,
-   const void *data, unsigned int datalen)
+static void
+ebt_log_packet(unsigned int pf, unsigned int hooknum,
+   const struct sk_buff *skb, const struct net_device *in,
+   const struct net_device *out, const struct nf_loginfo *loginfo,
+   const char *prefix)
 {
-        struct ebt_log_info *info = (struct ebt_log_info *)data;
-        char level_string[4] = "< >";
+        unsigned int bitmask;
 
-        level_string[1] = '0' + info->loglevel;
         spin_lock_bh(&ebt_log_lock);
-        printk(level_string);
-        printk("%s IN=%s OUT=%s ", info->prefix, in ? in->name : "",
-           out ? out->name : "");
+        printk("<%c>%s IN=%s OUT=%s MAC source = ", '0' + loginfo->u.log.level,
+               prefix, in ? in->name : "", out ? out->name : "");
 
-        printk("MAC source = ");
         print_MAC(eth_hdr(skb)->h_source);
         printk("MAC dest = ");
         print_MAC(eth_hdr(skb)->h_dest);
 
         printk("proto = 0x%04x", ntohs(eth_hdr(skb)->h_proto));
 
-        if ((info->bitmask & EBT_LOG_IP) && eth_hdr(skb)->h_proto ==
+        if (loginfo->type == NF_LOG_TYPE_LOG)
+                bitmask = loginfo->u.log.logflags;
+        else
+                bitmask = NF_LOG_MASK;
+
+        if ((bitmask & EBT_LOG_IP) && eth_hdr(skb)->h_proto ==
            htons(ETH_P_IP)){
                 struct iphdr _iph, *ih;
 
@@ -84,10 +90,9 @@ static void ebt_log(const struct sk_buff *skb, unsigned int hooknr,
                         printk(" INCOMPLETE IP header");
                         goto out;
                 }
-                printk(" IP SRC=%u.%u.%u.%u IP DST=%u.%u.%u.%u,",
-                   NIPQUAD(ih->saddr), NIPQUAD(ih->daddr));
-                printk(" IP tos=0x%02X, IP proto=%d", ih->tos,
-                       ih->protocol);
+                printk(" IP SRC=%u.%u.%u.%u IP DST=%u.%u.%u.%u, IP "
+                       "tos=0x%02X, IP proto=%d", NIPQUAD(ih->saddr),
+                       NIPQUAD(ih->daddr), ih->tos, ih->protocol);
                 if (ih->protocol == IPPROTO_TCP ||
                     ih->protocol == IPPROTO_UDP) {
                         struct tcpudphdr _ports, *pptr;
@@ -104,7 +109,7 @@ static void ebt_log(const struct sk_buff *skb, unsigned int hooknr,
                 goto out;
         }
 
-        if ((info->bitmask & EBT_LOG_ARP) &&
+        if ((bitmask & EBT_LOG_ARP) &&
             ((eth_hdr(skb)->h_proto == htons(ETH_P_ARP)) ||
              (eth_hdr(skb)->h_proto == htons(ETH_P_RARP)))) {
                 struct arphdr _arph, *ah;
@@ -144,6 +149,21 @@ static void ebt_log(const struct sk_buff *skb, unsigned int hooknr,
 out:
         printk("\n");
         spin_unlock_bh(&ebt_log_lock);
+
+}
+
+static void ebt_log(const struct sk_buff *skb, unsigned int hooknr,
+   const struct net_device *in, const struct net_device *out,
+   const void *data, unsigned int datalen)
+{
+        struct ebt_log_info *info = (struct ebt_log_info *)data;
+        struct nf_loginfo li;
+
+        li.type = NF_LOG_TYPE_LOG;
+        li.u.log.level = info->loglevel;
+        li.u.log.logflags = info->bitmask;
+
+        nf_log_packet(PF_BRIDGE, hooknr, skb, in, out, &li, info->prefix);
 }
 
 static struct ebt_watcher log =
@@ -154,13 +174,32 @@ static struct ebt_watcher log =
         .me             = THIS_MODULE,
 };
 
+static struct nf_logger ebt_log_logger = {
+        .name           = "ebt_log",
+        .logfn          = &ebt_log_packet,
+        .me             = THIS_MODULE,
+};
+
 static int __init init(void)
 {
-        return ebt_register_watcher(&log);
+        int ret;
+
+        ret = ebt_register_watcher(&log);
+        if (ret < 0)
+                return ret;
+        if (nf_log_register(PF_BRIDGE, &ebt_log_logger) < 0) {
+                printk(KERN_WARNING "ebt_log: not logging via system console "
+                       "since somebody else already registered for PF_INET\n");
+                /* we cannot make module load fail here, since otherwise 
+                 * ebtables userspace would abort */
+        }
+
+        return 0;
 }
 
 static void __exit fini(void)
 {
+        nf_log_unregister_logger(&ebt_log_logger);
         ebt_unregister_watcher(&log);
 }
 
diff --git a/net/bridge/netfilter/ebt_ulog.c b/net/bridge/netfilter/ebt_ulog.c
index aae26ae2e61f..ce617b3dbbb8 100644
--- a/net/bridge/netfilter/ebt_ulog.c
+++ b/net/bridge/netfilter/ebt_ulog.c
@@ -3,6 +3,7 @@
  *
  *      Authors:
  *      Bart De Schuymer <bdschuym@pandora.be>
+ *      Harald Welte <laforge@netfilter.org>
  *
  *  November, 2004
  *
@@ -115,14 +116,13 @@ static struct sk_buff *ulog_alloc_skb(unsigned int size)
         return skb;
 }
 
-static void ebt_ulog(const struct sk_buff *skb, unsigned int hooknr,
+static void ebt_ulog_packet(unsigned int hooknr, const struct sk_buff *skb,
    const struct net_device *in, const struct net_device *out,
-   const void *data, unsigned int datalen)
+   const struct ebt_ulog_info *uloginfo, const char *prefix)
 {
         ebt_ulog_packet_msg_t *pm;
         size_t size, copy_len;
         struct nlmsghdr *nlh;
-        struct ebt_ulog_info *uloginfo = (struct ebt_ulog_info *)data;
         unsigned int group = uloginfo->nlgroup;
         ebt_ulog_buff_t *ub = &ulog_buffers[group];
         spinlock_t *lock = &ub->lock;
@@ -216,6 +216,39 @@ alloc_failure:
         goto unlock;
 }
 
+/* this function is registered with the netfilter core */
+static void ebt_log_packet(unsigned int pf, unsigned int hooknum,
+   const struct sk_buff *skb, const struct net_device *in,
+   const struct net_device *out, const struct nf_loginfo *li,
+   const char *prefix)
+{
+        struct ebt_ulog_info loginfo;
+
+        if (!li || li->type != NF_LOG_TYPE_ULOG) {
+                loginfo.nlgroup = EBT_ULOG_DEFAULT_NLGROUP;
+                loginfo.cprange = 0;
+                loginfo.qthreshold = EBT_ULOG_DEFAULT_QTHRESHOLD;
+                loginfo.prefix[0] = '\0';
+        } else {
+                loginfo.nlgroup = li->u.ulog.group;
+                loginfo.cprange = li->u.ulog.copy_len;
+                loginfo.qthreshold = li->u.ulog.qthreshold;
+                strlcpy(loginfo.prefix, prefix, sizeof(loginfo.prefix));
+        }
+
+        ebt_ulog_packet(hooknum, skb, in, out, &loginfo, prefix);
+}
+
+static void ebt_ulog(const struct sk_buff *skb, unsigned int hooknr,
+   const struct net_device *in, const struct net_device *out,
+   const void *data, unsigned int datalen)
+{
+        struct ebt_ulog_info *uloginfo = (struct ebt_ulog_info *)data;
+
+        ebt_ulog_packet(hooknr, skb, in, out, uloginfo, NULL);
+}
+
+
 static int ebt_ulog_check(const char *tablename, unsigned int hookmask,
    const struct ebt_entry *e, void *data, unsigned int datalen)
 {
@@ -240,6 +273,12 @@ static struct ebt_watcher ulog = {
         .me             = THIS_MODULE,
 };
 
+static struct nf_logger ebt_ulog_logger = {
+        .name           = EBT_ULOG_WATCHER,
+        .logfn          = &ebt_log_packet,
+        .me             = THIS_MODULE,
+};
+
 static int __init init(void)
 {
         int i, ret = 0;
@@ -265,6 +304,13 @@ static int __init init(void)
         else if ((ret = ebt_register_watcher(&ulog)))
                 sock_release(ebtulognl->sk_socket);
 
+        if (nf_log_register(PF_BRIDGE, &ebt_ulog_logger) < 0) {
+                printk(KERN_WARNING "ebt_ulog: not logging via ulog "
+                       "since somebody else already registered for PF_BRIDGE\n");
+                /* we cannot make module load fail here, since otherwise
+                 * ebtables userspace would abort */
+        }
+
         return ret;
 }
 
@@ -273,6 +319,7 @@ static void __exit fini(void)
         ebt_ulog_buff_t *ub;
         int i;
 
+        nf_log_unregister_logger(&ebt_ulog_logger);
         ebt_unregister_watcher(&ulog);
         for (i = 0; i < EBT_ULOG_MAXNLGROUPS; i++) {
                 ub = &ulog_buffers[i];
diff --git a/net/core/datagram.c b/net/core/datagram.c
index 1bcfef51ac58..f8d322e1ea92 100644
--- a/net/core/datagram.c
+++ b/net/core/datagram.c
@@ -47,6 +47,7 @@
 #include <linux/rtnetlink.h>
 #include <linux/poll.h>
 #include <linux/highmem.h>
+#include <linux/spinlock.h>
 
 #include <net/protocol.h>
 #include <linux/skbuff.h>
@@ -200,6 +201,41 @@ void skb_free_datagram(struct sock *sk, struct sk_buff *skb)
 }
 
 /**
+ *      skb_kill_datagram - Free a datagram skbuff forcibly
+ *      @sk: socket
+ *      @skb: datagram skbuff
+ *      @flags: MSG_ flags
+ *
+ *      This function frees a datagram skbuff that was received by
+ *      skb_recv_datagram.  The flags argument must match the one
+ *      used for skb_recv_datagram.
+ *
+ *      If the MSG_PEEK flag is set, and the packet is still on the
+ *      receive queue of the socket, it will be taken off the queue
+ *      before it is freed.
+ *
+ *      This function currently only disables BH when acquiring the
+ *      sk_receive_queue lock.  Therefore it must not be used in a
+ *      context where that lock is acquired in an IRQ context.
+ */
+
+void skb_kill_datagram(struct sock *sk, struct sk_buff *skb, unsigned int flags)
+{
+        if (flags & MSG_PEEK) {
+                spin_lock_bh(&sk->sk_receive_queue.lock);
+                if (skb == skb_peek(&sk->sk_receive_queue)) {
+                        __skb_unlink(skb, &sk->sk_receive_queue);
+                        atomic_dec(&skb->users);
+                }
+                spin_unlock_bh(&sk->sk_receive_queue.lock);
+        }
+
+        kfree_skb(skb);
+}
+
+EXPORT_SYMBOL(skb_kill_datagram);
+
+/**
  *      skb_copy_datagram_iovec - Copy a datagram to an iovec.
  *      @skb: buffer to copy
  *      @offset: offset in the buffer to start copying from
diff --git a/net/core/dev.c b/net/core/dev.c
index a5efc9ae010b..29ba109d3e54 100644
--- a/net/core/dev.c
+++ b/net/core/dev.c
@@ -3276,7 +3276,6 @@ EXPORT_SYMBOL(dev_close);
 EXPORT_SYMBOL(dev_get_by_flags);
 EXPORT_SYMBOL(dev_get_by_index);
 EXPORT_SYMBOL(dev_get_by_name);
-EXPORT_SYMBOL(dev_ioctl);
 EXPORT_SYMBOL(dev_open);
 EXPORT_SYMBOL(dev_queue_xmit);
 EXPORT_SYMBOL(dev_remove_pack);
diff --git a/net/core/filter.c b/net/core/filter.c
index 3a10e0bc90e8..8964d3445588 100644
--- a/net/core/filter.c
+++ b/net/core/filter.c
@@ -13,6 +13,7 @@
  * 2 of the License, or (at your option) any later version.
  *
  * Andi Kleen - Fix a few bad bugs and races.
+ * Kris Katterjohn - Added many additional checks in sk_chk_filter()
  */
 
 #include <linux/module.h>
@@ -250,7 +251,7 @@ load_b:
                         mem[fentry->k] = X;
                         continue;
                 default:
-                        /* Invalid instruction counts as RET */
+                        WARN_ON(1);
                         return 0;
                 }
 
@@ -283,8 +284,8 @@ load_b:
  *
  * Check the user's filter code. If we let some ugly
  * filter code slip through kaboom! The filter must contain
- * no references or jumps that are out of range, no illegal instructions
- * and no backward jumps. It must end with a RET instruction
+ * no references or jumps that are out of range, no illegal
+ * instructions, and must end with a RET instruction.
  *
  * Returns 0 if the rule set is legal or a negative errno code if not.
  */
@@ -300,38 +301,85 @@ int sk_chk_filter(struct sock_filter *filter, int flen)
         for (pc = 0; pc < flen; pc++) {
                 /* all jumps are forward as they are not signed */
                 ftest = &filter[pc];
-                if (BPF_CLASS(ftest->code) == BPF_JMP) {
-                        /* but they mustn't jump off the end */
-                        if (BPF_OP(ftest->code) == BPF_JA) {
-                                /*
-                                 * Note, the large ftest->k might cause loops.
-                                 * Compare this with conditional jumps below,
-                                 * where offsets are limited. --ANK (981016)
-                                 */
-                                if (ftest->k >= (unsigned)(flen-pc-1))
-                                        return -EINVAL;
-                        } else {
-                                /* for conditionals both must be safe */
-                                if (pc + ftest->jt +1 >= flen ||
-                                    pc + ftest->jf +1 >= flen)
-                                        return -EINVAL;
-                        }
-                }
 
-                /* check for division by zero   -Kris Katterjohn 2005-10-30 */
-                if (ftest->code == (BPF_ALU|BPF_DIV|BPF_K) && ftest->k == 0)
-                        return -EINVAL;
+                /* Only allow valid instructions */
+                switch (ftest->code) {
+                case BPF_ALU|BPF_ADD|BPF_K:
+                case BPF_ALU|BPF_ADD|BPF_X:
+                case BPF_ALU|BPF_SUB|BPF_K:
+                case BPF_ALU|BPF_SUB|BPF_X:
+                case BPF_ALU|BPF_MUL|BPF_K:
+                case BPF_ALU|BPF_MUL|BPF_X:
+                case BPF_ALU|BPF_DIV|BPF_X:
+                case BPF_ALU|BPF_AND|BPF_K:
+                case BPF_ALU|BPF_AND|BPF_X:
+                case BPF_ALU|BPF_OR|BPF_K:
+                case BPF_ALU|BPF_OR|BPF_X:
+                case BPF_ALU|BPF_LSH|BPF_K:
+                case BPF_ALU|BPF_LSH|BPF_X:
+                case BPF_ALU|BPF_RSH|BPF_K:
+                case BPF_ALU|BPF_RSH|BPF_X:
+                case BPF_ALU|BPF_NEG:
+                case BPF_LD|BPF_W|BPF_ABS:
+                case BPF_LD|BPF_H|BPF_ABS:
+                case BPF_LD|BPF_B|BPF_ABS:
+                case BPF_LD|BPF_W|BPF_LEN:
+                case BPF_LD|BPF_W|BPF_IND:
+                case BPF_LD|BPF_H|BPF_IND:
+                case BPF_LD|BPF_B|BPF_IND:
+                case BPF_LD|BPF_IMM:
+                case BPF_LDX|BPF_W|BPF_LEN:
+                case BPF_LDX|BPF_B|BPF_MSH:
+                case BPF_LDX|BPF_IMM:
+                case BPF_MISC|BPF_TAX:
+                case BPF_MISC|BPF_TXA:
+                case BPF_RET|BPF_K:
+                case BPF_RET|BPF_A:
+                        break;
+
+                /* Some instructions need special checks */
 
-                /* check that memory operations use valid addresses. */
-                if (ftest->k >= BPF_MEMWORDS) {
-                        /* but it might not be a memory operation... */
-                        switch (ftest->code) {
-                        case BPF_ST:    
-                        case BPF_STX:   
-                        case BPF_LD|BPF_MEM:    
-                        case BPF_LDX|BPF_MEM:   
+                case BPF_ALU|BPF_DIV|BPF_K:
+                        /* check for division by zero */
+                        if (ftest->k == 0)
                                 return -EINVAL;
-                        }
+                        break;
+
+                case BPF_LD|BPF_MEM:
+                case BPF_LDX|BPF_MEM:
+                case BPF_ST:
+                case BPF_STX:
+                        /* check for invalid memory addresses */
+                        if (ftest->k >= BPF_MEMWORDS)
+                                return -EINVAL;
+                        break;
+
+                case BPF_JMP|BPF_JA:
+                        /*
+                         * Note, the large ftest->k might cause loops.
+                         * Compare this with conditional jumps below,
+                         * where offsets are limited. --ANK (981016)
+                         */
+                        if (ftest->k >= (unsigned)(flen-pc-1))
+                                return -EINVAL;
+                        break;
+
+                case BPF_JMP|BPF_JEQ|BPF_K:
+                case BPF_JMP|BPF_JEQ|BPF_X:
+                case BPF_JMP|BPF_JGE|BPF_K:
+                case BPF_JMP|BPF_JGE|BPF_X:
+                case BPF_JMP|BPF_JGT|BPF_K:
+                case BPF_JMP|BPF_JGT|BPF_X:
+                case BPF_JMP|BPF_JSET|BPF_K:
+                case BPF_JMP|BPF_JSET|BPF_X:
+                        /* for conditionals both must be safe */
+                        if (pc + ftest->jt + 1 >= flen ||
+                            pc + ftest->jf + 1 >= flen)
+                                return -EINVAL;
+                        break;
+
+                default:
+                        return -EINVAL;
                 }
         }
 
diff --git a/net/core/flow.c b/net/core/flow.c
index 7e95b39de9fd..c4f25385029f 100644
--- a/net/core/flow.c
+++ b/net/core/flow.c
@@ -23,6 +23,7 @@
 #include <net/flow.h>
 #include <asm/atomic.h>
 #include <asm/semaphore.h>
+#include <linux/security.h>
 
 struct flow_cache_entry {
         struct flow_cache_entry *next;
@@ -30,6 +31,7 @@ struct flow_cache_entry {
         u8                      dir;
         struct flowi            key;
         u32                     genid;
+        u32                     sk_sid;
         void                    *object;
         atomic_t                *object_ref;
 };
@@ -162,7 +164,7 @@ static int flow_key_compare(struct flowi *key1, struct flowi *key2)
         return 0;
 }
 
-void *flow_cache_lookup(struct flowi *key, u16 family, u8 dir,
+void *flow_cache_lookup(struct flowi *key, u32 sk_sid, u16 family, u8 dir,
                         flow_resolve_t resolver)
 {
         struct flow_cache_entry *fle, **head;
@@ -186,6 +188,7 @@ void *flow_cache_lookup(struct flowi *key, u16 family, u8 dir,
         for (fle = *head; fle; fle = fle->next) {
                 if (fle->family == family &&
                     fle->dir == dir &&
+                    fle->sk_sid == sk_sid &&
                     flow_key_compare(key, &fle->key) == 0) {
                         if (fle->genid == atomic_read(&flow_cache_genid)) {
                                 void *ret = fle->object;
@@ -210,6 +213,7 @@ void *flow_cache_lookup(struct flowi *key, u16 family, u8 dir,
                         *head = fle;
                         fle->family = family;
                         fle->dir = dir;
+                        fle->sk_sid = sk_sid;
                         memcpy(&fle->key, key, sizeof(*key));
                         fle->object = NULL;
                         flow_count(cpu)++;
@@ -221,7 +225,7 @@ nocache:
                 void *obj;
                 atomic_t *obj_ref;
 
-                resolver(key, family, dir, &obj, &obj_ref);
+                resolver(key, sk_sid, family, dir, &obj, &obj_ref);
 
                 if (fle) {
                         fle->genid = atomic_read(&flow_cache_genid);
diff --git a/net/core/netpoll.c b/net/core/netpoll.c
index 49424a42a2c0..281a632fa6a6 100644
--- a/net/core/netpoll.c
+++ b/net/core/netpoll.c
@@ -13,6 +13,7 @@
 #include <linux/netdevice.h>
 #include <linux/etherdevice.h>
 #include <linux/string.h>
+#include <linux/if_arp.h>
 #include <linux/inetdevice.h>
 #include <linux/inet.h>
 #include <linux/interrupt.h>
diff --git a/net/core/pktgen.c b/net/core/pktgen.c
index 7fc3e9e28c34..06cad2d63e8a 100644
--- a/net/core/pktgen.c
+++ b/net/core/pktgen.c
@@ -487,9 +487,9 @@ static unsigned int fmt_ip6(char *s,const char ip[16]);
 
 /* Module parameters, defaults. */
 static int pg_count_d = 1000; /* 1000 pkts by default */
-static int pg_delay_d = 0;
-static int pg_clone_skb_d = 0;
-static int debug = 0;
+static int pg_delay_d;
+static int pg_clone_skb_d;
+static int debug;
 
 static DECLARE_MUTEX(pktgen_sem);
 static struct pktgen_thread *pktgen_threads = NULL;
diff --git a/net/core/skbuff.c b/net/core/skbuff.c
index 83fee37de38e..070f91cfde59 100644
--- a/net/core/skbuff.c
+++ b/net/core/skbuff.c
@@ -135,17 +135,13 @@ void skb_under_panic(struct sk_buff *skb, int sz, void *here)
 struct sk_buff *__alloc_skb(unsigned int size, gfp_t gfp_mask,
                             int fclone)
 {
+        struct skb_shared_info *shinfo;
         struct sk_buff *skb;
         u8 *data;
 
         /* Get the HEAD */
-        if (fclone)
-                skb = kmem_cache_alloc(skbuff_fclone_cache,
-                                       gfp_mask & ~__GFP_DMA);
-        else
-                skb = kmem_cache_alloc(skbuff_head_cache,
-                                       gfp_mask & ~__GFP_DMA);
-
+        skb = kmem_cache_alloc(fclone ? skbuff_fclone_cache : skbuff_head_cache,
+                                gfp_mask & ~__GFP_DMA);
         if (!skb)
                 goto out;
 
@@ -162,6 +158,16 @@ struct sk_buff *__alloc_skb(unsigned int size, gfp_t gfp_mask,
         skb->data = data;
         skb->tail = data;
         skb->end  = data + size;
+        /* make sure we initialize shinfo sequentially */
+        shinfo = skb_shinfo(skb);
+        atomic_set(&shinfo->dataref, 1);
+        shinfo->nr_frags  = 0;
+        shinfo->tso_size = 0;
+        shinfo->tso_segs = 0;
+        shinfo->ufo_size = 0;
+        shinfo->ip6_frag_id = 0;
+        shinfo->frag_list = NULL;
+
         if (fclone) {
                 struct sk_buff *child = skb + 1;
                 atomic_t *fclone_ref = (atomic_t *) (child + 1);
@@ -171,13 +177,6 @@ struct sk_buff *__alloc_skb(unsigned int size, gfp_t gfp_mask,
 
                 child->fclone = SKB_FCLONE_UNAVAILABLE;
         }
-        atomic_set(&(skb_shinfo(skb)->dataref), 1);
-        skb_shinfo(skb)->nr_frags  = 0;
-        skb_shinfo(skb)->tso_size = 0;
-        skb_shinfo(skb)->tso_segs = 0;
-        skb_shinfo(skb)->frag_list = NULL;
-        skb_shinfo(skb)->ufo_size = 0;
-        skb_shinfo(skb)->ip6_frag_id = 0;
 out:
         return skb;
 nodata:
diff --git a/net/core/sock.c b/net/core/sock.c
index 13cc3be4f056..6465b0e4c8cb 100644
--- a/net/core/sock.c
+++ b/net/core/sock.c
@@ -1488,7 +1488,7 @@ int proto_register(struct proto *prot, int alloc_slab)
                         }
                 }
 
-                if (prot->twsk_obj_size) {
+                if (prot->twsk_prot != NULL) {
                         static const char mask[] = "tw_sock_%s";
 
                         timewait_sock_slab_name = kmalloc(strlen(prot->name) + sizeof(mask) - 1, GFP_KERNEL);
@@ -1497,11 +1497,12 @@ int proto_register(struct proto *prot, int alloc_slab)
                                 goto out_free_request_sock_slab;
 
                         sprintf(timewait_sock_slab_name, mask, prot->name);
-                        prot->twsk_slab = kmem_cache_create(timewait_sock_slab_name,
-                                                            prot->twsk_obj_size,
-                                                            0, SLAB_HWCACHE_ALIGN,
-                                                            NULL, NULL);
-                        if (prot->twsk_slab == NULL)
+                        prot->twsk_prot->twsk_slab =
+                                kmem_cache_create(timewait_sock_slab_name,
+                                                  prot->twsk_prot->twsk_obj_size,
+                                                  0, SLAB_HWCACHE_ALIGN,
+                                                  NULL, NULL);
+                        if (prot->twsk_prot->twsk_slab == NULL)
                                 goto out_free_timewait_sock_slab_name;
                 }
         }
@@ -1548,12 +1549,12 @@ void proto_unregister(struct proto *prot)
                 prot->rsk_prot->slab = NULL;
         }
 
-        if (prot->twsk_slab != NULL) {
-                const char *name = kmem_cache_name(prot->twsk_slab);
+        if (prot->twsk_prot != NULL && prot->twsk_prot->twsk_slab != NULL) {
+                const char *name = kmem_cache_name(prot->twsk_prot->twsk_slab);
 
-                kmem_cache_destroy(prot->twsk_slab);
+                kmem_cache_destroy(prot->twsk_prot->twsk_slab);
                 kfree(name);
-                prot->twsk_slab = NULL;
+                prot->twsk_prot->twsk_slab = NULL;
         }
 }
 
diff --git a/net/core/stream.c b/net/core/stream.c
index 15bfd03e8024..35e25259fd95 100644
--- a/net/core/stream.c
+++ b/net/core/stream.c
@@ -55,8 +55,9 @@ int sk_stream_wait_connect(struct sock *sk, long *timeo_p)
         int done;
 
         do {
-                if (sk->sk_err)
-                        return sock_error(sk);
+                int err = sock_error(sk);
+                if (err)
+                        return err;
                 if ((1 << sk->sk_state) & ~(TCPF_SYN_SENT | TCPF_SYN_RECV))
                         return -EPIPE;
                 if (!*timeo_p)
@@ -67,6 +68,7 @@ int sk_stream_wait_connect(struct sock *sk, long *timeo_p)
                 prepare_to_wait(sk->sk_sleep, &wait, TASK_INTERRUPTIBLE);
                 sk->sk_write_pending++;
                 done = sk_wait_event(sk, timeo_p,
+                                     !sk->sk_err &&
                                      !((1 << sk->sk_state) & 
                                        ~(TCPF_ESTABLISHED | TCPF_CLOSE_WAIT)));
                 finish_wait(sk->sk_sleep, &wait);
@@ -137,7 +139,9 @@ int sk_stream_wait_memory(struct sock *sk, long *timeo_p)
 
                 set_bit(SOCK_NOSPACE, &sk->sk_socket->flags);
                 sk->sk_write_pending++;
-                sk_wait_event(sk, &current_timeo, sk_stream_memory_free(sk) &&
+                sk_wait_event(sk, &current_timeo, !sk->sk_err && 
+                                                  !(sk->sk_shutdown & SEND_SHUTDOWN) &&
+                                                  sk_stream_memory_free(sk) &&
                                                   vm_wait);
                 sk->sk_write_pending--;
 
diff --git a/net/dccp/Makefile b/net/dccp/Makefile
index 344a8da153fc..87b27fff6e3b 100644
--- a/net/dccp/Makefile
+++ b/net/dccp/Makefile
@@ -1,3 +1,7 @@
+obj-$(CONFIG_IPV6) += dccp_ipv6.o
+
+dccp_ipv6-y := ipv6.o
+
 obj-$(CONFIG_IP_DCCP) += dccp.o
 
 dccp-y := ccid.o input.o ipv4.o minisocks.o options.o output.o proto.o \
diff --git a/net/dccp/ackvec.c b/net/dccp/ackvec.c
index c9a62cca22fc..ce9cb77c5c29 100644
--- a/net/dccp/ackvec.c
+++ b/net/dccp/ackvec.c
@@ -55,8 +55,8 @@ int dccp_insert_option_ackvec(struct sock *sk, struct sk_buff *skb)
         from = av->dccpav_buf + av->dccpav_buf_head;
 
         /* Check if buf_head wraps */
-        if (av->dccpav_buf_head + len > av->dccpav_vec_len) {
-                const u32 tailsize = (av->dccpav_vec_len - av->dccpav_buf_head);
+        if ((int)av->dccpav_buf_head + len > av->dccpav_vec_len) {
+                const u32 tailsize = av->dccpav_vec_len - av->dccpav_buf_head;
 
                 memcpy(to, from, tailsize);
                 to   += tailsize;
@@ -93,8 +93,14 @@ int dccp_insert_option_ackvec(struct sock *sk, struct sk_buff *skb)
 struct dccp_ackvec *dccp_ackvec_alloc(const unsigned int len,
                                       const gfp_t priority)
 {
-        struct dccp_ackvec *av = kmalloc(sizeof(*av) + len, priority);
+        struct dccp_ackvec *av;
 
+        BUG_ON(len == 0);
+
+        if (len > DCCP_MAX_ACKVEC_LEN)
+                return NULL;
+
+        av = kmalloc(sizeof(*av) + len, priority);
         if (av != NULL) {
                 av->dccpav_buf_len      = len;
                 av->dccpav_buf_head     =
@@ -117,13 +123,13 @@ void dccp_ackvec_free(struct dccp_ackvec *av)
 }
 
 static inline u8 dccp_ackvec_state(const struct dccp_ackvec *av,
-                                   const unsigned int index)
+                                   const u8 index)
 {
         return av->dccpav_buf[index] & DCCP_ACKVEC_STATE_MASK;
 }
 
 static inline u8 dccp_ackvec_len(const struct dccp_ackvec *av,
-                                 const unsigned int index)
+                                 const u8 index)
 {
         return av->dccpav_buf[index] & DCCP_ACKVEC_LEN_MASK;
 }
@@ -135,7 +141,7 @@ static inline u8 dccp_ackvec_len(const struct dccp_ackvec *av,
  */
 static inline int dccp_ackvec_set_buf_head_state(struct dccp_ackvec *av,
                                                  const unsigned int packets,
-                                                  const unsigned char state)
+                                                 const unsigned char state)
 {
         unsigned int gap;
         signed long new_head;
@@ -223,7 +229,7 @@ int dccp_ackvec_add(struct dccp_ackvec *av, const struct sock *sk,
                  *      could reduce the complexity of this scan.)
                  */
                 u64 delta = dccp_delta_seqno(ackno, av->dccpav_buf_ackno);
-                unsigned int index = av->dccpav_buf_head;
+                u8 index = av->dccpav_buf_head;
 
                 while (1) {
                         const u8 len = dccp_ackvec_len(av, index);
@@ -291,7 +297,7 @@ void dccp_ackvec_print(const struct dccp_ackvec *av)
 }
 #endif
 
-static void dccp_ackvec_trow_away_ack_record(struct dccp_ackvec *av)
+static void dccp_ackvec_throw_away_ack_record(struct dccp_ackvec *av)
 {
         /*
          * As we're keeping track of the ack vector size (dccpav_vec_len) and
@@ -301,9 +307,10 @@ static void dccp_ackvec_trow_away_ack_record(struct dccp_ackvec *av)
          * draft-ietf-dccp-spec-11.txt Appendix A. -acme
          */
 #if 0
-        av->dccpav_buf_tail = av->dccpav_ack_ptr + 1;
-        if (av->dccpav_buf_tail >= av->dccpav_vec_len)
-                av->dccpav_buf_tail -= av->dccpav_vec_len;
+        u32 new_buf_tail = av->dccpav_ack_ptr + 1;
+        if (new_buf_tail >= av->dccpav_vec_len)
+                new_buf_tail -= av->dccpav_vec_len;
+        av->dccpav_buf_tail = new_buf_tail;
 #endif
         av->dccpav_vec_len -= av->dccpav_sent_len;
 }
@@ -326,7 +333,7 @@ void dccp_ackvec_check_rcv_ackno(struct dccp_ackvec *av, struct sock *sk,
                               debug_prefix, 1,
                               (unsigned long long)av->dccpav_ack_seqno,
                               (unsigned long long)av->dccpav_ack_ackno);
-                dccp_ackvec_trow_away_ack_record(av);
+                dccp_ackvec_throw_away_ack_record(av);
                 av->dccpav_ack_seqno = DCCP_MAX_SEQNO + 1;
         }
 }
@@ -389,7 +396,7 @@ static void dccp_ackvec_check_rcv_ackvector(struct dccp_ackvec *av,
                                               av->dccpav_ack_seqno,
                                               (unsigned long long)
                                               av->dccpav_ack_ackno);
-                                dccp_ackvec_trow_away_ack_record(av);
+                                dccp_ackvec_throw_away_ack_record(av);
                         }
                         /*
                          * If dccpav_ack_seqno was not received, no problem
diff --git a/net/dccp/ackvec.h b/net/dccp/ackvec.h
index d0fd6c60c574..f7dfb5f67b87 100644
--- a/net/dccp/ackvec.h
+++ b/net/dccp/ackvec.h
@@ -54,16 +54,16 @@
  * @dccpav_buf - circular buffer of acknowledgeable packets
  */
 struct dccp_ackvec {
-        unsigned int    dccpav_buf_head;
-        unsigned int    dccpav_buf_tail;
         u64             dccpav_buf_ackno;
         u64             dccpav_ack_seqno;
         u64             dccpav_ack_ackno;
-        unsigned int    dccpav_ack_ptr;
-        unsigned int    dccpav_sent_len;
-        unsigned int    dccpav_vec_len;
-        unsigned int    dccpav_buf_len;
         struct timeval  dccpav_time;
+        u8              dccpav_buf_head;
+        u8              dccpav_buf_tail;
+        u8              dccpav_ack_ptr;
+        u8              dccpav_sent_len;
+        u8              dccpav_vec_len;
+        u8              dccpav_buf_len;
         u8              dccpav_buf_nonce;
         u8              dccpav_ack_nonce;
         u8              dccpav_buf[0];
diff --git a/net/dccp/ccid.h b/net/dccp/ccid.h
index c37eeeaf5c6e..de681c6ad081 100644
--- a/net/dccp/ccid.h
+++ b/net/dccp/ccid.h
@@ -21,6 +21,8 @@
 
 #define CCID_MAX 255
 
+struct tcp_info;
+
 struct ccid {
         unsigned char   ccid_id;
         const char      *ccid_name;
diff --git a/net/dccp/dccp.h b/net/dccp/dccp.h
index f97b85d55ad8..93f26dd6e6cb 100644
--- a/net/dccp/dccp.h
+++ b/net/dccp/dccp.h
@@ -59,7 +59,7 @@ extern void dccp_time_wait(struct sock *sk, int state, int timeo);
 
 #define DCCP_RTO_MAX ((unsigned)(120 * HZ)) /* FIXME: using TCP value */
 
-extern struct proto dccp_v4_prot;
+extern struct proto dccp_prot;
 
 /* is seq1 < seq2 ? */
 static inline int before48(const u64 seq1, const u64 seq2)
@@ -228,6 +228,9 @@ extern int dccp_rcv_state_process(struct sock *sk, struct sk_buff *skb,
 extern int dccp_rcv_established(struct sock *sk, struct sk_buff *skb,
                                 const struct dccp_hdr *dh, const unsigned len);
 
+extern int dccp_v4_init_sock(struct sock *sk);
+extern int dccp_v4_destroy_sock(struct sock *sk);
+
 extern void             dccp_close(struct sock *sk, long timeout);
 extern struct sk_buff   *dccp_make_response(struct sock *sk,
                                             struct dst_entry *dst,
@@ -238,6 +241,7 @@ extern struct sk_buff	*dccp_make_reset(struct sock *sk,
 
 extern int         dccp_connect(struct sock *sk);
 extern int         dccp_disconnect(struct sock *sk, int flags);
+extern void        dccp_unhash(struct sock *sk);
 extern int         dccp_getsockopt(struct sock *sk, int level, int optname,
                                    char __user *optval, int __user *optlen);
 extern int         dccp_setsockopt(struct sock *sk, int level, int optname,
@@ -249,6 +253,13 @@ extern int	   dccp_recvmsg(struct kiocb *iocb, struct sock *sk,
                                 struct msghdr *msg, size_t len, int nonblock,
                                 int flags, int *addr_len);
 extern void        dccp_shutdown(struct sock *sk, int how);
+extern int         inet_dccp_listen(struct socket *sock, int backlog);
+extern unsigned int dccp_poll(struct file *file, struct socket *sock,
+                             poll_table *wait);
+extern void        dccp_v4_send_check(struct sock *sk, int len,
+                                      struct sk_buff *skb);
+extern int         dccp_v4_connect(struct sock *sk, struct sockaddr *uaddr,
+                                   int addr_len);
 
 extern int         dccp_v4_checksum(const struct sk_buff *skb,
                                     const u32 saddr, const u32 daddr);
@@ -256,6 +267,17 @@ extern int	   dccp_v4_checksum(const struct sk_buff *skb,
 extern int         dccp_v4_send_reset(struct sock *sk,
                                       enum dccp_reset_codes code);
 extern void        dccp_send_close(struct sock *sk, const int active);
+extern int         dccp_invalid_packet(struct sk_buff *skb);
+
+static inline int dccp_bad_service_code(const struct sock *sk,
+                                        const __u32 service)
+{
+        const struct dccp_sock *dp = dccp_sk(sk);
+
+        if (dp->dccps_service == service)
+                return 0;
+        return !dccp_list_has_service(dp->dccps_service_list, service);
+}
 
 struct dccp_skb_cb {
         __u8  dccpd_type:4;
diff --git a/net/dccp/diag.c b/net/dccp/diag.c
index f675d8e642d3..3f78c00e3822 100644
--- a/net/dccp/diag.c
+++ b/net/dccp/diag.c
@@ -28,7 +28,7 @@ static void dccp_get_info(struct sock *sk, struct tcp_info *info)
         info->tcpi_retransmits  = icsk->icsk_retransmits;
         info->tcpi_probes       = icsk->icsk_probes_out;
         info->tcpi_backoff      = icsk->icsk_backoff;
-        info->tcpi_pmtu         = dp->dccps_pmtu_cookie;
+        info->tcpi_pmtu         = icsk->icsk_pmtu_cookie;
 
         if (dp->dccps_options.dccpo_send_ack_vector)
                 info->tcpi_options |= TCPI_OPT_SACK;
diff --git a/net/dccp/input.c b/net/dccp/input.c
index 3454d5941900..b6cba72b44e8 100644
--- a/net/dccp/input.c
+++ b/net/dccp/input.c
@@ -151,29 +151,12 @@ static int dccp_check_seqno(struct sock *sk, struct sk_buff *skb)
         return 0;
 }
 
-int dccp_rcv_established(struct sock *sk, struct sk_buff *skb,
-                         const struct dccp_hdr *dh, const unsigned len)
+static inline int __dccp_rcv_established(struct sock *sk, struct sk_buff *skb,
+                                         const struct dccp_hdr *dh,
+                                         const unsigned len)
 {
         struct dccp_sock *dp = dccp_sk(sk);
 
-        if (dccp_check_seqno(sk, skb))
-                goto discard;
-
-        if (dccp_parse_options(sk, skb))
-                goto discard;
-
-        if (DCCP_SKB_CB(skb)->dccpd_ack_seq != DCCP_PKT_WITHOUT_ACK_SEQ)
-                dccp_event_ack_recv(sk, skb);
-
-        if (dp->dccps_options.dccpo_send_ack_vector &&
-            dccp_ackvec_add(dp->dccps_hc_rx_ackvec, sk,
-                            DCCP_SKB_CB(skb)->dccpd_seq,
-                            DCCP_ACKVEC_STATE_RECEIVED))
-                goto discard;
-
-        ccid_hc_rx_packet_recv(dp->dccps_hc_rx_ccid, sk, skb);
-        ccid_hc_tx_packet_recv(dp->dccps_hc_tx_ccid, sk, skb);
-
         switch (dccp_hdr(skb)->dccph_type) {
         case DCCP_PKT_DATAACK:
         case DCCP_PKT_DATA:
@@ -250,6 +233,37 @@ discard:
         return 0;
 }
 
+int dccp_rcv_established(struct sock *sk, struct sk_buff *skb,
+                         const struct dccp_hdr *dh, const unsigned len)
+{
+        struct dccp_sock *dp = dccp_sk(sk);
+
+        if (dccp_check_seqno(sk, skb))
+                goto discard;
+
+        if (dccp_parse_options(sk, skb))
+                goto discard;
+
+        if (DCCP_SKB_CB(skb)->dccpd_ack_seq != DCCP_PKT_WITHOUT_ACK_SEQ)
+                dccp_event_ack_recv(sk, skb);
+
+        if (dp->dccps_options.dccpo_send_ack_vector &&
+            dccp_ackvec_add(dp->dccps_hc_rx_ackvec, sk,
+                            DCCP_SKB_CB(skb)->dccpd_seq,
+                            DCCP_ACKVEC_STATE_RECEIVED))
+                goto discard;
+
+        ccid_hc_rx_packet_recv(dp->dccps_hc_rx_ccid, sk, skb);
+        ccid_hc_tx_packet_recv(dp->dccps_hc_tx_ccid, sk, skb);
+
+        return __dccp_rcv_established(sk, skb, dh, len);
+discard:
+        __kfree_skb(skb);
+        return 0;
+}
+
+EXPORT_SYMBOL_GPL(dccp_rcv_established);
+
 static int dccp_rcv_request_sent_state_process(struct sock *sk,
                                                struct sk_buff *skb,
                                                const struct dccp_hdr *dh,
@@ -286,6 +300,12 @@ static int dccp_rcv_request_sent_state_process(struct sock *sk,
                         goto out_invalid_packet;
                 }
 
+                if (dp->dccps_options.dccpo_send_ack_vector &&
+                    dccp_ackvec_add(dp->dccps_hc_rx_ackvec, sk,
+                                    DCCP_SKB_CB(skb)->dccpd_seq,
+                                    DCCP_ACKVEC_STATE_RECEIVED))
+                        goto out_invalid_packet; /* FIXME: change error code */
+
                 dp->dccps_isr = DCCP_SKB_CB(skb)->dccpd_seq;
                 dccp_update_gsr(sk, dp->dccps_isr);
                 /*
@@ -309,7 +329,7 @@ static int dccp_rcv_request_sent_state_process(struct sock *sk,
                         goto out_invalid_packet;
                 }
 
-                dccp_sync_mss(sk, dp->dccps_pmtu_cookie);
+                dccp_sync_mss(sk, icsk->icsk_pmtu_cookie);
 
                 /*
                  *    Step 10: Process REQUEST state (second part)
@@ -329,7 +349,7 @@ static int dccp_rcv_request_sent_state_process(struct sock *sk,
                 dccp_set_state(sk, DCCP_PARTOPEN);
 
                 /* Make sure socket is routed, for correct metrics. */
-                inet_sk_rebuild_header(sk);
+                icsk->icsk_af_ops->rebuild_header(sk);
 
                 if (!sock_flag(sk, SOCK_DEAD)) {
                         sk->sk_state_change(sk);
@@ -398,9 +418,9 @@ static int dccp_rcv_respond_partopen_state_process(struct sock *sk,
 
                 if (dh->dccph_type == DCCP_PKT_DATAACK ||
                     dh->dccph_type == DCCP_PKT_DATA) {
-                        dccp_rcv_established(sk, skb, dh, len);
+                        __dccp_rcv_established(sk, skb, dh, len);
                         queued = 1; /* packet was queued
-                                       (by dccp_rcv_established) */
+                                       (by __dccp_rcv_established) */
                 }
                 break;
         }
@@ -444,7 +464,8 @@ int dccp_rcv_state_process(struct sock *sk, struct sk_buff *skb,
          */
         if (sk->sk_state == DCCP_LISTEN) {
                 if (dh->dccph_type == DCCP_PKT_REQUEST) {
-                        if (dccp_v4_conn_request(sk, skb) < 0)
+                        if (inet_csk(sk)->icsk_af_ops->conn_request(sk,
+                                                                    skb) < 0)
                                 return 1;
 
                         /* FIXME: do congestion control initialization */
@@ -471,14 +492,14 @@ int dccp_rcv_state_process(struct sock *sk, struct sk_buff *skb,
                 if (dcb->dccpd_ack_seq != DCCP_PKT_WITHOUT_ACK_SEQ)
                         dccp_event_ack_recv(sk, skb);
 
-                ccid_hc_rx_packet_recv(dp->dccps_hc_rx_ccid, sk, skb);
-                ccid_hc_tx_packet_recv(dp->dccps_hc_tx_ccid, sk, skb);
-
                 if (dp->dccps_options.dccpo_send_ack_vector &&
                     dccp_ackvec_add(dp->dccps_hc_rx_ackvec, sk,
                                     DCCP_SKB_CB(skb)->dccpd_seq,
                                     DCCP_ACKVEC_STATE_RECEIVED))
                         goto discard;
+
+                ccid_hc_rx_packet_recv(dp->dccps_hc_rx_ccid, sk, skb);
+                ccid_hc_tx_packet_recv(dp->dccps_hc_tx_ccid, sk, skb);
         }
 
         /*
@@ -566,3 +587,5 @@ discard:
         }
         return 0;
 }
+
+EXPORT_SYMBOL_GPL(dccp_rcv_state_process);
diff --git a/net/dccp/ipv4.c b/net/dccp/ipv4.c
index 656e13e38cfb..3f244670764a 100644
--- a/net/dccp/ipv4.c
+++ b/net/dccp/ipv4.c
@@ -19,7 +19,9 @@
 
 #include <net/icmp.h>
 #include <net/inet_hashtables.h>
+#include <net/inet_sock.h>
 #include <net/sock.h>
+#include <net/timewait_sock.h>
 #include <net/tcp_states.h>
 #include <net/xfrm.h>
 
@@ -37,7 +39,8 @@ EXPORT_SYMBOL_GPL(dccp_hashinfo);
 
 static int dccp_v4_get_port(struct sock *sk, const unsigned short snum)
 {
-        return inet_csk_get_port(&dccp_hashinfo, sk, snum);
+        return inet_csk_get_port(&dccp_hashinfo, sk, snum,
+                                 inet_csk_bind_conflict);
 }
 
 static void dccp_v4_hash(struct sock *sk)
@@ -45,171 +48,14 @@ static void dccp_v4_hash(struct sock *sk)
         inet_hash(&dccp_hashinfo, sk);
 }
 
-static void dccp_v4_unhash(struct sock *sk)
+void dccp_unhash(struct sock *sk)
 {
         inet_unhash(&dccp_hashinfo, sk);
 }
 
-/* called with local bh disabled */
-static int __dccp_v4_check_established(struct sock *sk, const __u16 lport,
-                                      struct inet_timewait_sock **twp)
-{
-        struct inet_sock *inet = inet_sk(sk);
-        const u32 daddr = inet->rcv_saddr;
-        const u32 saddr = inet->daddr;
-        const int dif = sk->sk_bound_dev_if;
-        INET_ADDR_COOKIE(acookie, saddr, daddr)
-        const __u32 ports = INET_COMBINED_PORTS(inet->dport, lport);
-        unsigned int hash = inet_ehashfn(daddr, lport, saddr, inet->dport);
-        struct inet_ehash_bucket *head = inet_ehash_bucket(&dccp_hashinfo, hash);
-        const struct sock *sk2;
-        const struct hlist_node *node;
-        struct inet_timewait_sock *tw;
-
-        prefetch(head->chain.first);
-        write_lock(&head->lock);
-
-        /* Check TIME-WAIT sockets first. */
-        sk_for_each(sk2, node, &(head + dccp_hashinfo.ehash_size)->chain) {
-                tw = inet_twsk(sk2);
-
-                if (INET_TW_MATCH(sk2, hash, acookie, saddr, daddr, ports, dif))
-                        goto not_unique;
-        }
-        tw = NULL;
-
-        /* And established part... */
-        sk_for_each(sk2, node, &head->chain) {
-                if (INET_MATCH(sk2, hash, acookie, saddr, daddr, ports, dif))
-                        goto not_unique;
-        }
+EXPORT_SYMBOL_GPL(dccp_unhash);
 
-        /* Must record num and sport now. Otherwise we will see
-         * in hash table socket with a funny identity. */
-        inet->num = lport;
-        inet->sport = htons(lport);
-        sk->sk_hash = hash;
-        BUG_TRAP(sk_unhashed(sk));
-        __sk_add_node(sk, &head->chain);
-        sock_prot_inc_use(sk->sk_prot);
-        write_unlock(&head->lock);
-
-        if (twp != NULL) {
-                *twp = tw;
-                NET_INC_STATS_BH(LINUX_MIB_TIMEWAITRECYCLED);
-        } else if (tw != NULL) {
-                /* Silly. Should hash-dance instead... */
-                inet_twsk_deschedule(tw, &dccp_death_row);
-                NET_INC_STATS_BH(LINUX_MIB_TIMEWAITRECYCLED);
-
-                inet_twsk_put(tw);
-        }
-
-        return 0;
-
-not_unique:
-        write_unlock(&head->lock);
-        return -EADDRNOTAVAIL;
-}
-
-/*
- * Bind a port for a connect operation and hash it.
- */
-static int dccp_v4_hash_connect(struct sock *sk)
-{
-        const unsigned short snum = inet_sk(sk)->num;
-        struct inet_bind_hashbucket *head;
-        struct inet_bind_bucket *tb;
-        int ret;
-
-        if (snum == 0) {
-                int low = sysctl_local_port_range[0];
-                int high = sysctl_local_port_range[1];
-                int remaining = (high - low) + 1;
-                int rover = net_random() % (high - low) + low;
-                struct hlist_node *node;
-                struct inet_timewait_sock *tw = NULL;
-
-                local_bh_disable();
-                do {
-                        head = &dccp_hashinfo.bhash[inet_bhashfn(rover,
-                                                    dccp_hashinfo.bhash_size)];
-                        spin_lock(&head->lock);
-
-                        /* Does not bother with rcv_saddr checks,
-                         * because the established check is already
-                         * unique enough.
-                         */
-                        inet_bind_bucket_for_each(tb, node, &head->chain) {
-                                if (tb->port == rover) {
-                                        BUG_TRAP(!hlist_empty(&tb->owners));
-                                        if (tb->fastreuse >= 0)
-                                                goto next_port;
-                                        if (!__dccp_v4_check_established(sk,
-                                                                         rover,
-                                                                         &tw))
-                                                goto ok;
-                                        goto next_port;
-                                }
-                        }
-
-                        tb = inet_bind_bucket_create(dccp_hashinfo.bind_bucket_cachep,
-                                                     head, rover);
-                        if (tb == NULL) {
-                                spin_unlock(&head->lock);
-                                break;
-                        }
-                        tb->fastreuse = -1;
-                        goto ok;
-
-                next_port:
-                        spin_unlock(&head->lock);
-                        if (++rover > high)
-                                rover = low;
-                } while (--remaining > 0);
-
-                local_bh_enable();
-
-                return -EADDRNOTAVAIL;
-
-ok:
-                /* All locks still held and bhs disabled */
-                inet_bind_hash(sk, tb, rover);
-                if (sk_unhashed(sk)) {
-                        inet_sk(sk)->sport = htons(rover);
-                        __inet_hash(&dccp_hashinfo, sk, 0);
-                }
-                spin_unlock(&head->lock);
-
-                if (tw != NULL) {
-                        inet_twsk_deschedule(tw, &dccp_death_row);
-                        inet_twsk_put(tw);
-                }
-
-                ret = 0;
-                goto out;
-        }
-
-        head = &dccp_hashinfo.bhash[inet_bhashfn(snum,
-                                                 dccp_hashinfo.bhash_size)];
-        tb   = inet_csk(sk)->icsk_bind_hash;
-        spin_lock_bh(&head->lock);
-        if (sk_head(&tb->owners) == sk && sk->sk_bind_node.next == NULL) {
-                __inet_hash(&dccp_hashinfo, sk, 0);
-                spin_unlock_bh(&head->lock);
-                return 0;
-        } else {
-                spin_unlock(&head->lock);
-                /* No definite answer... Walk to established hash table */
-                ret = __dccp_v4_check_established(sk, snum, NULL);
-out:
-                local_bh_enable();
-                return ret;
-        }
-}
-
-static int dccp_v4_connect(struct sock *sk, struct sockaddr *uaddr,
-                           int addr_len)
+int dccp_v4_connect(struct sock *sk, struct sockaddr *uaddr, int addr_len)
 {
         struct inet_sock *inet = inet_sk(sk);
         struct dccp_sock *dp = dccp_sk(sk);
@@ -259,9 +105,9 @@ static int dccp_v4_connect(struct sock *sk, struct sockaddr *uaddr,
         inet->dport = usin->sin_port;
         inet->daddr = daddr;
 
-        dp->dccps_ext_header_len = 0;
+        inet_csk(sk)->icsk_ext_hdr_len = 0;
         if (inet->opt != NULL)
-                dp->dccps_ext_header_len = inet->opt->optlen;
+                inet_csk(sk)->icsk_ext_hdr_len = inet->opt->optlen;
         /*
          * Socket identity is still unknown (sport may be zero).
          * However we set state to DCCP_REQUESTING and not releasing socket
@@ -269,7 +115,7 @@ static int dccp_v4_connect(struct sock *sk, struct sockaddr *uaddr,
          * complete initialization after this.
          */
         dccp_set_state(sk, DCCP_REQUESTING);
-        err = dccp_v4_hash_connect(sk);
+        err = inet_hash_connect(&dccp_death_row, sk);
         if (err != 0)
                 goto failure;
 
@@ -287,16 +133,6 @@ static int dccp_v4_connect(struct sock *sk, struct sockaddr *uaddr,
                                                             usin->sin_port);
         dccp_update_gss(sk, dp->dccps_iss);
 
-        /*
-         * SWL and AWL are initially adjusted so that they are not less than
-         * the initial Sequence Numbers received and sent, respectively:
-         *      SWL := max(GSR + 1 - floor(W/4), ISR),
-         *      AWL := max(GSS - W' + 1, ISS).
-         * These adjustments MUST be applied only at the beginning of the
-         * connection.
-         */
-        dccp_set_seqno(&dp->dccps_awl, max48(dp->dccps_awl, dp->dccps_iss));
-
         inet->id = dp->dccps_iss ^ jiffies;
 
         err = dccp_connect(sk);
@@ -316,6 +152,8 @@ failure:
         goto out;
 }
 
+EXPORT_SYMBOL_GPL(dccp_v4_connect);
+
 /*
  * This routine does path mtu discovery as defined in RFC1191.
  */
@@ -354,7 +192,7 @@ static inline void dccp_do_pmtu_discovery(struct sock *sk,
         mtu = dst_mtu(dst);
 
         if (inet->pmtudisc != IP_PMTUDISC_DONT &&
-            dp->dccps_pmtu_cookie > mtu) {
+            inet_csk(sk)->icsk_pmtu_cookie > mtu) {
                 dccp_sync_mss(sk, mtu);
 
                 /*
@@ -606,6 +444,17 @@ out:
         sock_put(sk);
 }
 
+/* This routine computes an IPv4 DCCP checksum. */
+void dccp_v4_send_check(struct sock *sk, int len, struct sk_buff *skb)
+{
+        const struct inet_sock *inet = inet_sk(sk);
+        struct dccp_hdr *dh = dccp_hdr(skb);
+
+        dh->dccph_checksum = dccp_v4_checksum(skb, inet->saddr, inet->daddr);
+}
+
+EXPORT_SYMBOL_GPL(dccp_v4_send_check);
+
 int dccp_v4_send_reset(struct sock *sk, enum dccp_reset_codes code)
 {
         struct sk_buff *skb;
@@ -641,16 +490,6 @@ static inline u64 dccp_v4_init_sequence(const struct sock *sk,
                                            dccp_hdr(skb)->dccph_sport);
 }
 
-static inline int dccp_bad_service_code(const struct sock *sk,
-                                        const __u32 service)
-{
-        const struct dccp_sock *dp = dccp_sk(sk);
-
-        if (dp->dccps_service == service)
-                return 0;
-        return !dccp_list_has_service(dp->dccps_service_list, service);
-}
-
 int dccp_v4_conn_request(struct sock *sk, struct sk_buff *skb)
 {
         struct inet_request_sock *ireq;
@@ -662,7 +501,6 @@ int dccp_v4_conn_request(struct sock *sk, struct sk_buff *skb)
         const __u32 service = dccp_hdr_request(skb)->dccph_req_service;
         struct dccp_skb_cb *dcb = DCCP_SKB_CB(skb);
         __u8 reset_code = DCCP_RESET_CODE_TOO_BUSY;
-        struct dst_entry *dst = NULL;
 
         /* Never answer to DCCP_PKT_REQUESTs send to broadcast or multicast */
         if (((struct rtable *)skb->dst)->rt_flags &
@@ -703,7 +541,6 @@ int dccp_v4_conn_request(struct sock *sk, struct sk_buff *skb)
         ireq = inet_rsk(req);
         ireq->loc_addr = daddr;
         ireq->rmt_addr = saddr;
-        /* FIXME: Merge Aristeu's option parsing code when ready */
         req->rcv_wnd    = 100; /* Fake, option parsing will get the
                                   right value */
         ireq->opt       = NULL;
@@ -721,23 +558,22 @@ int dccp_v4_conn_request(struct sock *sk, struct sk_buff *skb)
         dreq->dreq_iss     = dccp_v4_init_sequence(sk, skb);
         dreq->dreq_service = service;
 
-        if (dccp_v4_send_response(sk, req, dst))
+        if (dccp_v4_send_response(sk, req, NULL))
                 goto drop_and_free;
 
         inet_csk_reqsk_queue_hash_add(sk, req, DCCP_TIMEOUT_INIT);
         return 0;
 
 drop_and_free:
-        /*
-         * FIXME: should be reqsk_free after implementing req->rsk_ops
-         */
-        __reqsk_free(req);
+        reqsk_free(req);
 drop:
         DCCP_INC_STATS_BH(DCCP_MIB_ATTEMPTFAILS);
         dcb->dccpd_reset_code = reset_code;
         return -1;
 }
 
+EXPORT_SYMBOL_GPL(dccp_v4_conn_request);
+
 /*
  * The three way handshake has completed - we got a valid ACK or DATAACK -
  * now create the new socket.
@@ -792,6 +628,8 @@ exit:
         return NULL;
 }
 
+EXPORT_SYMBOL_GPL(dccp_v4_request_recv_sock);
+
 static struct sock *dccp_v4_hnd_req(struct sock *sk, struct sk_buff *skb)
 {
         const struct dccp_hdr *dh = dccp_hdr(skb);
@@ -1011,7 +849,9 @@ discard:
         return 0;
 }
 
-static inline int dccp_invalid_packet(struct sk_buff *skb)
+EXPORT_SYMBOL_GPL(dccp_v4_do_rcv);
+
+int dccp_invalid_packet(struct sk_buff *skb)
 {
         const struct dccp_hdr *dh;
 
@@ -1065,29 +905,30 @@ static inline int dccp_invalid_packet(struct sk_buff *skb)
                 return 1;
         }
 
-        /* If the header checksum is incorrect, drop packet and return */
-        if (dccp_v4_verify_checksum(skb, skb->nh.iph->saddr,
-                                    skb->nh.iph->daddr) < 0) {
-                LIMIT_NETDEBUG(KERN_WARNING "DCCP: header checksum is "
-                                            "incorrect\n");
-                return 1;
-        }
-
         return 0;
 }
 
+EXPORT_SYMBOL_GPL(dccp_invalid_packet);
+
 /* this is called when real data arrives */
 int dccp_v4_rcv(struct sk_buff *skb)
 {
         const struct dccp_hdr *dh;
         struct sock *sk;
-        int rc;
 
         /* Step 1: Check header basics: */
 
         if (dccp_invalid_packet(skb))
                 goto discard_it;
 
+        /* If the header checksum is incorrect, drop packet and return */
+        if (dccp_v4_verify_checksum(skb, skb->nh.iph->saddr,
+                                    skb->nh.iph->daddr) < 0) {
+                LIMIT_NETDEBUG(KERN_WARNING "%s: incorrect header checksum\n",
+                               __FUNCTION__);
+                goto discard_it;
+        }
+
         dh = dccp_hdr(skb);
 
         DCCP_SKB_CB(skb)->dccpd_seq  = dccp_hdr_seq(skb);
@@ -1143,28 +984,10 @@ int dccp_v4_rcv(struct sk_buff *skb)
                 goto do_time_wait;
         }
 
-        if (!xfrm4_policy_check(sk, XFRM_POLICY_IN, skb)) {
-                dccp_pr_debug("xfrm4_policy_check failed\n");
+        if (!xfrm4_policy_check(sk, XFRM_POLICY_IN, skb))
                 goto discard_and_relse;
-        }
-
-        if (sk_filter(sk, skb, 0)) {
-                dccp_pr_debug("sk_filter failed\n");
-                goto discard_and_relse;
-        }
-
-        skb->dev = NULL;
-
-        bh_lock_sock(sk);
-        rc = 0;
-        if (!sock_owned_by_user(sk))
-                rc = dccp_v4_do_rcv(sk, skb);
-        else
-                sk_add_backlog(sk, skb);
-        bh_unlock_sock(sk);
 
-        sock_put(sk);
-        return rc;
+        return sk_receive_skb(sk, skb);
 
 no_dccp_socket:
         if (!xfrm4_policy_check(NULL, XFRM_POLICY_IN, skb))
@@ -1194,9 +1017,23 @@ do_time_wait:
         goto no_dccp_socket;
 }
 
-static int dccp_v4_init_sock(struct sock *sk)
+struct inet_connection_sock_af_ops dccp_ipv4_af_ops = {
+        .queue_xmit     = ip_queue_xmit,
+        .send_check     = dccp_v4_send_check,
+        .rebuild_header = inet_sk_rebuild_header,
+        .conn_request   = dccp_v4_conn_request,
+        .syn_recv_sock  = dccp_v4_request_recv_sock,
+        .net_header_len = sizeof(struct iphdr),
+        .setsockopt     = ip_setsockopt,
+        .getsockopt     = ip_getsockopt,
+        .addr2sockaddr  = inet_csk_addr2sockaddr,
+        .sockaddr_len   = sizeof(struct sockaddr_in),
+};
+
+int dccp_v4_init_sock(struct sock *sk)
 {
         struct dccp_sock *dp = dccp_sk(sk);
+        struct inet_connection_sock *icsk = inet_csk(sk);
         static int dccp_ctl_socket_init = 1;
 
         dccp_options_init(&dp->dccps_options);
@@ -1236,9 +1073,11 @@ static int dccp_v4_init_sock(struct sock *sk)
                 dccp_ctl_socket_init = 0;
 
         dccp_init_xmit_timers(sk);
-        inet_csk(sk)->icsk_rto = DCCP_TIMEOUT_INIT;
+        icsk->icsk_rto = DCCP_TIMEOUT_INIT;
         sk->sk_state = DCCP_CLOSED;
         sk->sk_write_space = dccp_write_space;
+        icsk->icsk_af_ops = &dccp_ipv4_af_ops;
+        icsk->icsk_sync_mss = dccp_sync_mss;
         dp->dccps_mss_cache = 536;
         dp->dccps_role = DCCP_ROLE_UNDEFINED;
         dp->dccps_service = DCCP_SERVICE_INVALID_VALUE;
@@ -1246,7 +1085,9 @@ static int dccp_v4_init_sock(struct sock *sk)
         return 0;
 }
 
-static int dccp_v4_destroy_sock(struct sock *sk)
+EXPORT_SYMBOL_GPL(dccp_v4_init_sock);
+
+int dccp_v4_destroy_sock(struct sock *sk)
 {
         struct dccp_sock *dp = dccp_sk(sk);
 
@@ -1279,6 +1120,8 @@ static int dccp_v4_destroy_sock(struct sock *sk)
         return 0;
 }
 
+EXPORT_SYMBOL_GPL(dccp_v4_destroy_sock);
+
 static void dccp_v4_reqsk_destructor(struct request_sock *req)
 {
         kfree(inet_rsk(req)->opt);
@@ -1293,7 +1136,11 @@ static struct request_sock_ops dccp_request_sock_ops = {
         .send_reset     = dccp_v4_ctl_send_reset,
 };
 
-struct proto dccp_v4_prot = {
+static struct timewait_sock_ops dccp_timewait_sock_ops = {
+        .twsk_obj_size  = sizeof(struct inet_timewait_sock),
+};
+
+struct proto dccp_prot = {
         .name                   = "DCCP",
         .owner                  = THIS_MODULE,
         .close                  = dccp_close,
@@ -1307,7 +1154,7 @@ struct proto dccp_v4_prot = {
         .recvmsg                = dccp_recvmsg,
         .backlog_rcv            = dccp_v4_do_rcv,
         .hash                   = dccp_v4_hash,
-        .unhash                 = dccp_v4_unhash,
+        .unhash                 = dccp_unhash,
         .accept                 = inet_csk_accept,
         .get_port               = dccp_v4_get_port,
         .shutdown               = dccp_shutdown,
@@ -1316,5 +1163,7 @@ struct proto dccp_v4_prot = {
         .max_header             = MAX_DCCP_HEADER,
         .obj_size               = sizeof(struct dccp_sock),
         .rsk_prot               = &dccp_request_sock_ops,
-        .twsk_obj_size          = sizeof(struct inet_timewait_sock),
+        .twsk_prot              = &dccp_timewait_sock_ops,
 };
+
+EXPORT_SYMBOL_GPL(dccp_prot);
diff --git a/net/dccp/ipv6.c b/net/dccp/ipv6.c
new file mode 100644
index 000000000000..c609dc78f487
--- /dev/null
+++ b/net/dccp/ipv6.c
@@ -0,0 +1,1261 @@
+/*
+ *      DCCP over IPv6
+ *      Linux INET6 implementation 
+ *
+ *      Based on net/dccp6/ipv6.c
+ *
+ *      Arnaldo Carvalho de Melo <acme@ghostprotocols.net>
+ *
+ *      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.
+ */
+
+#include <linux/config.h>
+#include <linux/module.h>
+#include <linux/random.h>
+#include <linux/xfrm.h>
+
+#include <net/addrconf.h>
+#include <net/inet_common.h>
+#include <net/inet_hashtables.h>
+#include <net/inet_sock.h>
+#include <net/inet6_connection_sock.h>
+#include <net/inet6_hashtables.h>
+#include <net/ip6_route.h>
+#include <net/ipv6.h>
+#include <net/protocol.h>
+#include <net/transp_v6.h>
+#include <net/xfrm.h>
+
+#include "dccp.h"
+#include "ipv6.h"
+
+static void dccp_v6_ctl_send_reset(struct sk_buff *skb);
+static void dccp_v6_reqsk_send_ack(struct sk_buff *skb,
+                                   struct request_sock *req);
+static void dccp_v6_send_check(struct sock *sk, int len, struct sk_buff *skb);
+
+static int dccp_v6_do_rcv(struct sock *sk, struct sk_buff *skb);
+
+static struct inet_connection_sock_af_ops dccp_ipv6_mapped;
+static struct inet_connection_sock_af_ops dccp_ipv6_af_ops;
+
+static int dccp_v6_get_port(struct sock *sk, unsigned short snum)
+{
+        return inet_csk_get_port(&dccp_hashinfo, sk, snum,
+                                 inet6_csk_bind_conflict);
+}
+
+static void dccp_v6_hash(struct sock *sk)
+{
+        if (sk->sk_state != DCCP_CLOSED) {
+                if (inet_csk(sk)->icsk_af_ops == &dccp_ipv6_mapped) {
+                        dccp_prot.hash(sk);
+                        return;
+                }
+                local_bh_disable();
+                __inet6_hash(&dccp_hashinfo, sk);
+                local_bh_enable();
+        }
+}
+
+static inline u16 dccp_v6_check(struct dccp_hdr *dh, int len,
+                                struct in6_addr *saddr, 
+                                struct in6_addr *daddr, 
+                                unsigned long base)
+{
+        return csum_ipv6_magic(saddr, daddr, len, IPPROTO_DCCP, base);
+}
+
+static __u32 dccp_v6_init_sequence(struct sock *sk, struct sk_buff *skb)
+{
+        const struct dccp_hdr *dh = dccp_hdr(skb);
+
+        if (skb->protocol == htons(ETH_P_IPV6))
+                return secure_tcpv6_sequence_number(skb->nh.ipv6h->daddr.s6_addr32,
+                                                    skb->nh.ipv6h->saddr.s6_addr32,
+                                                    dh->dccph_dport,
+                                                    dh->dccph_sport);
+        else
+                return secure_dccp_sequence_number(skb->nh.iph->daddr,
+                                                   skb->nh.iph->saddr,
+                                                   dh->dccph_dport,
+                                                   dh->dccph_sport);
+}
+
+static int dccp_v6_connect(struct sock *sk, struct sockaddr *uaddr, 
+                           int addr_len)
+{
+        struct sockaddr_in6 *usin = (struct sockaddr_in6 *) uaddr;
+        struct inet_connection_sock *icsk = inet_csk(sk);
+        struct inet_sock *inet = inet_sk(sk);
+        struct ipv6_pinfo *np = inet6_sk(sk);
+        struct dccp_sock *dp = dccp_sk(sk);
+        struct in6_addr *saddr = NULL, *final_p = NULL, final;
+        struct flowi fl;
+        struct dst_entry *dst;
+        int addr_type;
+        int err;
+
+        dp->dccps_role = DCCP_ROLE_CLIENT;
+
+        if (addr_len < SIN6_LEN_RFC2133) 
+                return -EINVAL;
+
+        if (usin->sin6_family != AF_INET6) 
+                return -EAFNOSUPPORT;
+
+        memset(&fl, 0, sizeof(fl));
+
+        if (np->sndflow) {
+                fl.fl6_flowlabel = usin->sin6_flowinfo & IPV6_FLOWINFO_MASK;
+                IP6_ECN_flow_init(fl.fl6_flowlabel);
+                if (fl.fl6_flowlabel & IPV6_FLOWLABEL_MASK) {
+                        struct ip6_flowlabel *flowlabel;
+                        flowlabel = fl6_sock_lookup(sk, fl.fl6_flowlabel);
+                        if (flowlabel == NULL)
+                                return -EINVAL;
+                        ipv6_addr_copy(&usin->sin6_addr, &flowlabel->dst);
+                        fl6_sock_release(flowlabel);
+                }
+        }
+
+        /*
+         *      connect() to INADDR_ANY means loopback (BSD'ism).
+         */
+        
+        if (ipv6_addr_any(&usin->sin6_addr))
+                usin->sin6_addr.s6_addr[15] = 0x1; 
+
+        addr_type = ipv6_addr_type(&usin->sin6_addr);
+
+        if(addr_type & IPV6_ADDR_MULTICAST)
+                return -ENETUNREACH;
+
+        if (addr_type & IPV6_ADDR_LINKLOCAL) {
+                if (addr_len >= sizeof(struct sockaddr_in6) &&
+                    usin->sin6_scope_id) {
+                        /* If interface is set while binding, indices
+                         * must coincide.
+                         */
+                        if (sk->sk_bound_dev_if &&
+                            sk->sk_bound_dev_if != usin->sin6_scope_id)
+                                return -EINVAL;
+
+                        sk->sk_bound_dev_if = usin->sin6_scope_id;
+                }
+
+                /* Connect to link-local address requires an interface */
+                if (!sk->sk_bound_dev_if)
+                        return -EINVAL;
+        }
+
+        ipv6_addr_copy(&np->daddr, &usin->sin6_addr);
+        np->flow_label = fl.fl6_flowlabel;
+
+        /*
+         *      DCCP over IPv4
+         */
+
+        if (addr_type == IPV6_ADDR_MAPPED) {
+                u32 exthdrlen = icsk->icsk_ext_hdr_len;
+                struct sockaddr_in sin;
+
+                SOCK_DEBUG(sk, "connect: ipv4 mapped\n");
+
+                if (__ipv6_only_sock(sk))
+                        return -ENETUNREACH;
+
+                sin.sin_family = AF_INET;
+                sin.sin_port = usin->sin6_port;
+                sin.sin_addr.s_addr = usin->sin6_addr.s6_addr32[3];
+
+                icsk->icsk_af_ops = &dccp_ipv6_mapped;
+                sk->sk_backlog_rcv = dccp_v4_do_rcv;
+
+                err = dccp_v4_connect(sk, (struct sockaddr *)&sin, sizeof(sin));
+
+                if (err) {
+                        icsk->icsk_ext_hdr_len = exthdrlen;
+                        icsk->icsk_af_ops = &dccp_ipv6_af_ops;
+                        sk->sk_backlog_rcv = dccp_v6_do_rcv;
+                        goto failure;
+                } else {
+                        ipv6_addr_set(&np->saddr, 0, 0, htonl(0x0000FFFF),
+                                      inet->saddr);
+                        ipv6_addr_set(&np->rcv_saddr, 0, 0, htonl(0x0000FFFF),
+                                      inet->rcv_saddr);
+                }
+
+                return err;
+        }
+
+        if (!ipv6_addr_any(&np->rcv_saddr))
+                saddr = &np->rcv_saddr;
+
+        fl.proto = IPPROTO_DCCP;
+        ipv6_addr_copy(&fl.fl6_dst, &np->daddr);
+        ipv6_addr_copy(&fl.fl6_src, saddr ? saddr : &np->saddr);
+        fl.oif = sk->sk_bound_dev_if;
+        fl.fl_ip_dport = usin->sin6_port;
+        fl.fl_ip_sport = inet->sport;
+
+        if (np->opt && np->opt->srcrt) {
+                struct rt0_hdr *rt0 = (struct rt0_hdr *)np->opt->srcrt;
+                ipv6_addr_copy(&final, &fl.fl6_dst);
+                ipv6_addr_copy(&fl.fl6_dst, rt0->addr);
+                final_p = &final;
+        }
+
+        err = ip6_dst_lookup(sk, &dst, &fl);
+        if (err)
+                goto failure;
+        if (final_p)
+                ipv6_addr_copy(&fl.fl6_dst, final_p);
+
+        if ((err = xfrm_lookup(&dst, &fl, sk, 0)) < 0)
+                goto failure;
+
+        if (saddr == NULL) {
+                saddr = &fl.fl6_src;
+                ipv6_addr_copy(&np->rcv_saddr, saddr);
+        }
+
+        /* set the source address */
+        ipv6_addr_copy(&np->saddr, saddr);
+        inet->rcv_saddr = LOOPBACK4_IPV6;
+
+        ip6_dst_store(sk, dst, NULL);
+
+        icsk->icsk_ext_hdr_len = 0;
+        if (np->opt)
+                icsk->icsk_ext_hdr_len = (np->opt->opt_flen +
+                                          np->opt->opt_nflen);
+
+        inet->dport = usin->sin6_port;
+
+        dccp_set_state(sk, DCCP_REQUESTING);
+        err = inet6_hash_connect(&dccp_death_row, sk);
+        if (err)
+                goto late_failure;
+        /* FIXME */
+#if 0
+        dp->dccps_gar = secure_dccp_v6_sequence_number(np->saddr.s6_addr32,
+                                                       np->daddr.s6_addr32,
+                                                       inet->sport,
+                                                       inet->dport);
+#endif
+        err = dccp_connect(sk);
+        if (err)
+                goto late_failure;
+
+        return 0;
+
+late_failure:
+        dccp_set_state(sk, DCCP_CLOSED);
+        __sk_dst_reset(sk);
+failure:
+        inet->dport = 0;
+        sk->sk_route_caps = 0;
+        return err;
+}
+
+static void dccp_v6_err(struct sk_buff *skb, struct inet6_skb_parm *opt,
+                        int type, int code, int offset, __u32 info)
+{
+        struct ipv6hdr *hdr = (struct ipv6hdr *)skb->data;
+        const struct dccp_hdr *dh = (struct dccp_hdr *)(skb->data + offset);
+        struct ipv6_pinfo *np;
+        struct sock *sk;
+        int err;
+        __u64 seq;
+
+        sk = inet6_lookup(&dccp_hashinfo, &hdr->daddr, dh->dccph_dport,
+                          &hdr->saddr, dh->dccph_sport, skb->dev->ifindex);
+
+        if (sk == NULL) {
+                ICMP6_INC_STATS_BH(__in6_dev_get(skb->dev), ICMP6_MIB_INERRORS);
+                return;
+        }
+
+        if (sk->sk_state == DCCP_TIME_WAIT) {
+                inet_twsk_put((struct inet_timewait_sock *)sk);
+                return;
+        }
+
+        bh_lock_sock(sk);
+        if (sock_owned_by_user(sk))
+                NET_INC_STATS_BH(LINUX_MIB_LOCKDROPPEDICMPS);
+
+        if (sk->sk_state == DCCP_CLOSED)
+                goto out;
+
+        np = inet6_sk(sk);
+
+        if (type == ICMPV6_PKT_TOOBIG) {
+                struct dst_entry *dst = NULL;
+
+                if (sock_owned_by_user(sk))
+                        goto out;
+                if ((1 << sk->sk_state) & (DCCPF_LISTEN | DCCPF_CLOSED))
+                        goto out;
+
+                /* icmp should have updated the destination cache entry */
+                dst = __sk_dst_check(sk, np->dst_cookie);
+
+                if (dst == NULL) {
+                        struct inet_sock *inet = inet_sk(sk);
+                        struct flowi fl;
+
+                        /* BUGGG_FUTURE: Again, it is not clear how
+                           to handle rthdr case. Ignore this complexity
+                           for now.
+                         */
+                        memset(&fl, 0, sizeof(fl));
+                        fl.proto = IPPROTO_DCCP;
+                        ipv6_addr_copy(&fl.fl6_dst, &np->daddr);
+                        ipv6_addr_copy(&fl.fl6_src, &np->saddr);
+                        fl.oif = sk->sk_bound_dev_if;
+                        fl.fl_ip_dport = inet->dport;
+                        fl.fl_ip_sport = inet->sport;
+
+                        if ((err = ip6_dst_lookup(sk, &dst, &fl))) {
+                                sk->sk_err_soft = -err;
+                                goto out;
+                        }
+
+                        if ((err = xfrm_lookup(&dst, &fl, sk, 0)) < 0) {
+                                sk->sk_err_soft = -err;
+                                goto out;
+                        }
+
+                } else
+                        dst_hold(dst);
+
+                if (inet_csk(sk)->icsk_pmtu_cookie > dst_mtu(dst)) {
+                        dccp_sync_mss(sk, dst_mtu(dst));
+                } /* else let the usual retransmit timer handle it */
+                dst_release(dst);
+                goto out;
+        }
+
+        icmpv6_err_convert(type, code, &err);
+
+        seq = DCCP_SKB_CB(skb)->dccpd_seq;
+        /* Might be for an request_sock */
+        switch (sk->sk_state) {
+                struct request_sock *req, **prev;
+        case DCCP_LISTEN:
+                if (sock_owned_by_user(sk))
+                        goto out;
+
+                req = inet6_csk_search_req(sk, &prev, dh->dccph_dport,
+                                           &hdr->daddr, &hdr->saddr,
+                                           inet6_iif(skb));
+                if (!req)
+                        goto out;
+
+                /* ICMPs are not backlogged, hence we cannot get
+                 * an established socket here.
+                 */
+                BUG_TRAP(req->sk == NULL);
+
+                if (seq != dccp_rsk(req)->dreq_iss) {
+                        NET_INC_STATS_BH(LINUX_MIB_OUTOFWINDOWICMPS);
+                        goto out;
+                }
+
+                inet_csk_reqsk_queue_drop(sk, req, prev);
+                goto out;
+
+        case DCCP_REQUESTING:
+        case DCCP_RESPOND:  /* Cannot happen.
+                               It can, it SYNs are crossed. --ANK */ 
+                if (!sock_owned_by_user(sk)) {
+                        DCCP_INC_STATS_BH(DCCP_MIB_ATTEMPTFAILS);
+                        sk->sk_err = err;
+                        /*
+                         * Wake people up to see the error
+                         * (see connect in sock.c)
+                         */
+                        sk->sk_error_report(sk);
+
+                        dccp_done(sk);
+                } else
+                        sk->sk_err_soft = err;
+                goto out;
+        }
+
+        if (!sock_owned_by_user(sk) && np->recverr) {
+                sk->sk_err = err;
+                sk->sk_error_report(sk);
+        } else
+                sk->sk_err_soft = err;
+
+out:
+        bh_unlock_sock(sk);
+        sock_put(sk);
+}
+
+
+static int dccp_v6_send_response(struct sock *sk, struct request_sock *req,
+                                 struct dst_entry *dst)
+{
+        struct inet6_request_sock *ireq6 = inet6_rsk(req);
+        struct ipv6_pinfo *np = inet6_sk(sk);
+        struct sk_buff *skb;
+        struct ipv6_txoptions *opt = NULL;
+        struct in6_addr *final_p = NULL, final;
+        struct flowi fl;
+        int err = -1;
+
+        memset(&fl, 0, sizeof(fl));
+        fl.proto = IPPROTO_DCCP;
+        ipv6_addr_copy(&fl.fl6_dst, &ireq6->rmt_addr);
+        ipv6_addr_copy(&fl.fl6_src, &ireq6->loc_addr);
+        fl.fl6_flowlabel = 0;
+        fl.oif = ireq6->iif;
+        fl.fl_ip_dport = inet_rsk(req)->rmt_port;
+        fl.fl_ip_sport = inet_sk(sk)->sport;
+
+        if (dst == NULL) {
+                opt = np->opt;
+                if (opt == NULL &&
+                    np->rxopt.bits.osrcrt == 2 &&
+                    ireq6->pktopts) {
+                        struct sk_buff *pktopts = ireq6->pktopts;
+                        struct inet6_skb_parm *rxopt = IP6CB(pktopts);
+                        if (rxopt->srcrt)
+                                opt = ipv6_invert_rthdr(sk,
+                                        (struct ipv6_rt_hdr *)(pktopts->nh.raw +
+                                                               rxopt->srcrt));
+                }
+
+                if (opt && opt->srcrt) {
+                        struct rt0_hdr *rt0 = (struct rt0_hdr *)opt->srcrt;
+                        ipv6_addr_copy(&final, &fl.fl6_dst);
+                        ipv6_addr_copy(&fl.fl6_dst, rt0->addr);
+                        final_p = &final;
+                }
+
+                err = ip6_dst_lookup(sk, &dst, &fl);
+                if (err)
+                        goto done;
+                if (final_p)
+                        ipv6_addr_copy(&fl.fl6_dst, final_p);
+                if ((err = xfrm_lookup(&dst, &fl, sk, 0)) < 0)
+                        goto done;
+        }
+
+        skb = dccp_make_response(sk, dst, req);
+        if (skb != NULL) {
+                struct dccp_hdr *dh = dccp_hdr(skb);
+                dh->dccph_checksum = dccp_v6_check(dh, skb->len,
+                                                   &ireq6->loc_addr,
+                                                   &ireq6->rmt_addr,
+                                                   csum_partial((char *)dh,
+                                                                skb->len,
+                                                                skb->csum));
+                ipv6_addr_copy(&fl.fl6_dst, &ireq6->rmt_addr);
+                err = ip6_xmit(sk, skb, &fl, opt, 0);
+                if (err == NET_XMIT_CN)
+                        err = 0;
+        }
+
+done:
+        if (opt && opt != np->opt)
+                sock_kfree_s(sk, opt, opt->tot_len);
+        return err;
+}
+
+static void dccp_v6_reqsk_destructor(struct request_sock *req)
+{
+        if (inet6_rsk(req)->pktopts != NULL)
+                kfree_skb(inet6_rsk(req)->pktopts);
+}
+
+static struct request_sock_ops dccp6_request_sock_ops = {
+        .family         = AF_INET6,
+        .obj_size       = sizeof(struct dccp6_request_sock),
+        .rtx_syn_ack    = dccp_v6_send_response,
+        .send_ack       = dccp_v6_reqsk_send_ack,
+        .destructor     = dccp_v6_reqsk_destructor,
+        .send_reset     = dccp_v6_ctl_send_reset,
+};
+
+static struct timewait_sock_ops dccp6_timewait_sock_ops = {
+        .twsk_obj_size  = sizeof(struct dccp6_timewait_sock),
+};
+
+static void dccp_v6_send_check(struct sock *sk, int len, struct sk_buff *skb)
+{
+        struct ipv6_pinfo *np = inet6_sk(sk);
+        struct dccp_hdr *dh = dccp_hdr(skb);
+
+        dh->dccph_checksum = csum_ipv6_magic(&np->saddr, &np->daddr,
+                                             len, IPPROTO_DCCP, 
+                                             csum_partial((char *)dh,
+                                                          dh->dccph_doff << 2,
+                                                          skb->csum));
+}
+
+static void dccp_v6_ctl_send_reset(struct sk_buff *rxskb)
+{
+        struct dccp_hdr *rxdh = dccp_hdr(rxskb), *dh; 
+        const int dccp_hdr_reset_len = sizeof(struct dccp_hdr) +
+                                       sizeof(struct dccp_hdr_ext) +
+                                       sizeof(struct dccp_hdr_reset);
+        struct sk_buff *skb;
+        struct flowi fl;
+        u64 seqno;
+
+        if (rxdh->dccph_type == DCCP_PKT_RESET)
+                return;
+
+        if (!ipv6_unicast_destination(rxskb))
+                return; 
+
+        /*
+         * We need to grab some memory, and put together an RST,
+         * and then put it into the queue to be sent.
+         */
+
+        skb = alloc_skb(MAX_HEADER + sizeof(struct ipv6hdr) +
+                        dccp_hdr_reset_len, GFP_ATOMIC);
+        if (skb == NULL) 
+                return;
+
+        skb_reserve(skb, MAX_HEADER + sizeof(struct ipv6hdr) +
+                    dccp_hdr_reset_len);
+
+        skb->h.raw = skb_push(skb, dccp_hdr_reset_len);
+        dh = dccp_hdr(skb);
+        memset(dh, 0, dccp_hdr_reset_len);
+
+        /* Swap the send and the receive. */
+        dh->dccph_type  = DCCP_PKT_RESET;
+        dh->dccph_sport = rxdh->dccph_dport;
+        dh->dccph_dport = rxdh->dccph_sport;
+        dh->dccph_doff  = dccp_hdr_reset_len / 4;
+        dh->dccph_x     = 1;
+        dccp_hdr_reset(skb)->dccph_reset_code =
+                                DCCP_SKB_CB(rxskb)->dccpd_reset_code;
+
+        /* See "8.3.1. Abnormal Termination" in draft-ietf-dccp-spec-11 */
+        seqno = 0;
+        if (DCCP_SKB_CB(rxskb)->dccpd_ack_seq != DCCP_PKT_WITHOUT_ACK_SEQ)
+                dccp_set_seqno(&seqno, DCCP_SKB_CB(rxskb)->dccpd_ack_seq + 1);
+
+        dccp_hdr_set_seq(dh, seqno);
+        dccp_hdr_set_ack(dccp_hdr_ack_bits(skb),
+                         DCCP_SKB_CB(rxskb)->dccpd_seq);
+
+        memset(&fl, 0, sizeof(fl));
+        ipv6_addr_copy(&fl.fl6_dst, &rxskb->nh.ipv6h->saddr);
+        ipv6_addr_copy(&fl.fl6_src, &rxskb->nh.ipv6h->daddr);
+        dh->dccph_checksum = csum_ipv6_magic(&fl.fl6_src, &fl.fl6_dst,
+                                             sizeof(*dh), IPPROTO_DCCP,
+                                             skb->csum);
+        fl.proto = IPPROTO_DCCP;
+        fl.oif = inet6_iif(rxskb);
+        fl.fl_ip_dport = dh->dccph_dport;
+        fl.fl_ip_sport = dh->dccph_sport;
+
+        /* sk = NULL, but it is safe for now. RST socket required. */
+        if (!ip6_dst_lookup(NULL, &skb->dst, &fl)) {
+                if (xfrm_lookup(&skb->dst, &fl, NULL, 0) >= 0) {
+                        ip6_xmit(NULL, skb, &fl, NULL, 0);
+                        DCCP_INC_STATS_BH(DCCP_MIB_OUTSEGS);
+                        DCCP_INC_STATS_BH(DCCP_MIB_OUTRSTS);
+                        return;
+                }
+        }
+
+        kfree_skb(skb);
+}
+
+static void dccp_v6_ctl_send_ack(struct sk_buff *rxskb)
+{
+        struct flowi fl;
+        struct dccp_hdr *rxdh = dccp_hdr(rxskb), *dh;
+        const int dccp_hdr_ack_len = sizeof(struct dccp_hdr) +
+                                     sizeof(struct dccp_hdr_ext) +
+                                     sizeof(struct dccp_hdr_ack_bits);
+        struct sk_buff *skb;
+
+        skb = alloc_skb(MAX_HEADER + sizeof(struct ipv6hdr) +
+                        dccp_hdr_ack_len, GFP_ATOMIC);
+        if (skb == NULL)
+                return;
+
+        skb_reserve(skb, MAX_HEADER + sizeof(struct ipv6hdr) +
+                         dccp_hdr_ack_len);
+
+        skb->h.raw = skb_push(skb, dccp_hdr_ack_len);
+        dh = dccp_hdr(skb);
+        memset(dh, 0, dccp_hdr_ack_len);
+
+        /* Build DCCP header and checksum it. */
+        dh->dccph_type  = DCCP_PKT_ACK;
+        dh->dccph_sport = rxdh->dccph_dport;
+        dh->dccph_dport = rxdh->dccph_sport;
+        dh->dccph_doff  = dccp_hdr_ack_len / 4;
+        dh->dccph_x     = 1;
+        
+        dccp_hdr_set_seq(dh, DCCP_SKB_CB(rxskb)->dccpd_ack_seq);
+        dccp_hdr_set_ack(dccp_hdr_ack_bits(skb),
+                         DCCP_SKB_CB(rxskb)->dccpd_seq);
+
+        memset(&fl, 0, sizeof(fl));
+        ipv6_addr_copy(&fl.fl6_dst, &rxskb->nh.ipv6h->saddr);
+        ipv6_addr_copy(&fl.fl6_src, &rxskb->nh.ipv6h->daddr);
+
+        /* FIXME: calculate checksum, IPv4 also should... */
+
+        fl.proto = IPPROTO_DCCP;
+        fl.oif = inet6_iif(rxskb);
+        fl.fl_ip_dport = dh->dccph_dport;
+        fl.fl_ip_sport = dh->dccph_sport;
+
+        if (!ip6_dst_lookup(NULL, &skb->dst, &fl)) {
+                if (xfrm_lookup(&skb->dst, &fl, NULL, 0) >= 0) {
+                        ip6_xmit(NULL, skb, &fl, NULL, 0);
+                        DCCP_INC_STATS_BH(DCCP_MIB_OUTSEGS);
+                        return;
+                }
+        }
+
+        kfree_skb(skb);
+}
+
+static void dccp_v6_reqsk_send_ack(struct sk_buff *skb,
+                                   struct request_sock *req)
+{
+        dccp_v6_ctl_send_ack(skb);
+}
+
+static struct sock *dccp_v6_hnd_req(struct sock *sk,struct sk_buff *skb)
+{
+        const struct dccp_hdr *dh = dccp_hdr(skb);
+        const struct ipv6hdr *iph = skb->nh.ipv6h;
+        struct sock *nsk;
+        struct request_sock **prev;
+        /* Find possible connection requests. */
+        struct request_sock *req = inet6_csk_search_req(sk, &prev,
+                                                        dh->dccph_sport,
+                                                        &iph->saddr,
+                                                        &iph->daddr,
+                                                        inet6_iif(skb));
+        if (req != NULL)
+                return dccp_check_req(sk, skb, req, prev);
+
+        nsk = __inet6_lookup_established(&dccp_hashinfo,
+                                         &iph->saddr, dh->dccph_sport,
+                                         &iph->daddr, ntohs(dh->dccph_dport),
+                                         inet6_iif(skb));
+
+        if (nsk != NULL) {
+                if (nsk->sk_state != DCCP_TIME_WAIT) {
+                        bh_lock_sock(nsk);
+                        return nsk;
+                }
+                inet_twsk_put((struct inet_timewait_sock *)nsk);
+                return NULL;
+        }
+
+        return sk;
+}
+
+static int dccp_v6_conn_request(struct sock *sk, struct sk_buff *skb)
+{
+        struct inet_request_sock *ireq;
+        struct dccp_sock dp;
+        struct request_sock *req;
+        struct dccp_request_sock *dreq;
+        struct inet6_request_sock *ireq6;
+        struct ipv6_pinfo *np = inet6_sk(sk);
+        const __u32 service = dccp_hdr_request(skb)->dccph_req_service;
+        struct dccp_skb_cb *dcb = DCCP_SKB_CB(skb);
+        __u8 reset_code = DCCP_RESET_CODE_TOO_BUSY;
+
+        if (skb->protocol == htons(ETH_P_IP))
+                return dccp_v4_conn_request(sk, skb);
+
+        if (!ipv6_unicast_destination(skb))
+                goto drop; 
+
+        if (dccp_bad_service_code(sk, service)) {
+                reset_code = DCCP_RESET_CODE_BAD_SERVICE_CODE;
+                goto drop;
+        }
+        /*
+         *      There are no SYN attacks on IPv6, yet...        
+         */
+        if (inet_csk_reqsk_queue_is_full(sk))
+                goto drop;              
+
+        if (sk_acceptq_is_full(sk) && inet_csk_reqsk_queue_young(sk) > 1)
+                goto drop;
+
+        req = inet6_reqsk_alloc(sk->sk_prot->rsk_prot);
+        if (req == NULL)
+                goto drop;
+
+        /* FIXME: process options */
+
+        dccp_openreq_init(req, &dp, skb);
+
+        ireq6 = inet6_rsk(req);
+        ireq = inet_rsk(req);
+        ipv6_addr_copy(&ireq6->rmt_addr, &skb->nh.ipv6h->saddr);
+        ipv6_addr_copy(&ireq6->loc_addr, &skb->nh.ipv6h->daddr);
+        req->rcv_wnd    = 100; /* Fake, option parsing will get the
+                                  right value */
+        ireq6->pktopts  = NULL;
+
+        if (ipv6_opt_accepted(sk, skb) ||
+            np->rxopt.bits.rxinfo || np->rxopt.bits.rxoinfo ||
+            np->rxopt.bits.rxhlim || np->rxopt.bits.rxohlim) {
+                atomic_inc(&skb->users);
+                ireq6->pktopts = skb;
+        }
+        ireq6->iif = sk->sk_bound_dev_if;
+
+        /* So that link locals have meaning */
+        if (!sk->sk_bound_dev_if &&
+            ipv6_addr_type(&ireq6->rmt_addr) & IPV6_ADDR_LINKLOCAL)
+                ireq6->iif = inet6_iif(skb);
+
+        /* 
+         * Step 3: Process LISTEN state
+         *
+         * Set S.ISR, S.GSR, S.SWL, S.SWH from packet or Init Cookie
+         *
+         * In fact we defer setting S.GSR, S.SWL, S.SWH to
+         * dccp_create_openreq_child.
+         */
+        dreq = dccp_rsk(req);
+        dreq->dreq_isr     = dcb->dccpd_seq;
+        dreq->dreq_iss     = dccp_v6_init_sequence(sk, skb);
+        dreq->dreq_service = service;
+
+        if (dccp_v6_send_response(sk, req, NULL))
+                goto drop_and_free;
+
+        inet6_csk_reqsk_queue_hash_add(sk, req, DCCP_TIMEOUT_INIT);
+        return 0;
+
+drop_and_free:
+        reqsk_free(req);
+drop:
+        DCCP_INC_STATS_BH(DCCP_MIB_ATTEMPTFAILS);
+        dcb->dccpd_reset_code = reset_code;
+        return -1;
+}
+
+static struct sock *dccp_v6_request_recv_sock(struct sock *sk,
+                                              struct sk_buff *skb,
+                                              struct request_sock *req,
+                                              struct dst_entry *dst)
+{
+        struct inet6_request_sock *ireq6 = inet6_rsk(req);
+        struct ipv6_pinfo *newnp, *np = inet6_sk(sk);
+        struct inet_sock *newinet;
+        struct dccp_sock *newdp;
+        struct dccp6_sock *newdp6;
+        struct sock *newsk;
+        struct ipv6_txoptions *opt;
+
+        if (skb->protocol == htons(ETH_P_IP)) {
+                /*
+                 *      v6 mapped
+                 */
+
+                newsk = dccp_v4_request_recv_sock(sk, skb, req, dst);
+                if (newsk == NULL) 
+                        return NULL;
+
+                newdp6 = (struct dccp6_sock *)newsk;
+                newdp = dccp_sk(newsk);
+                newinet = inet_sk(newsk);
+                newinet->pinet6 = &newdp6->inet6;
+                newnp = inet6_sk(newsk);
+
+                memcpy(newnp, np, sizeof(struct ipv6_pinfo));
+
+                ipv6_addr_set(&newnp->daddr, 0, 0, htonl(0x0000FFFF),
+                              newinet->daddr);
+
+                ipv6_addr_set(&newnp->saddr, 0, 0, htonl(0x0000FFFF),
+                              newinet->saddr);
+
+                ipv6_addr_copy(&newnp->rcv_saddr, &newnp->saddr);
+
+                inet_csk(newsk)->icsk_af_ops = &dccp_ipv6_mapped;
+                newsk->sk_backlog_rcv = dccp_v4_do_rcv;
+                newnp->pktoptions  = NULL;
+                newnp->opt         = NULL;
+                newnp->mcast_oif   = inet6_iif(skb);
+                newnp->mcast_hops  = skb->nh.ipv6h->hop_limit;
+
+                /*
+                 * No need to charge this sock to the relevant IPv6 refcnt debug socks count
+                 * here, dccp_create_openreq_child now does this for us, see the comment in
+                 * that function for the gory details. -acme
+                 */
+
+                /* It is tricky place. Until this moment IPv4 tcp
+                   worked with IPv6 icsk.icsk_af_ops.
+                   Sync it now.
+                 */
+                dccp_sync_mss(newsk, inet_csk(newsk)->icsk_pmtu_cookie);
+
+                return newsk;
+        }
+
+        opt = np->opt;
+
+        if (sk_acceptq_is_full(sk))
+                goto out_overflow;
+
+        if (np->rxopt.bits.osrcrt == 2 &&
+            opt == NULL && ireq6->pktopts) {
+                struct inet6_skb_parm *rxopt = IP6CB(ireq6->pktopts);
+                if (rxopt->srcrt)
+                        opt = ipv6_invert_rthdr(sk,
+                                (struct ipv6_rt_hdr *)(ireq6->pktopts->nh.raw +
+                                                       rxopt->srcrt));
+        }
+
+        if (dst == NULL) {
+                struct in6_addr *final_p = NULL, final;
+                struct flowi fl;
+
+                memset(&fl, 0, sizeof(fl));
+                fl.proto = IPPROTO_DCCP;
+                ipv6_addr_copy(&fl.fl6_dst, &ireq6->rmt_addr);
+                if (opt && opt->srcrt) {
+                        struct rt0_hdr *rt0 = (struct rt0_hdr *) opt->srcrt;
+                        ipv6_addr_copy(&final, &fl.fl6_dst);
+                        ipv6_addr_copy(&fl.fl6_dst, rt0->addr);
+                        final_p = &final;
+                }
+                ipv6_addr_copy(&fl.fl6_src, &ireq6->loc_addr);
+                fl.oif = sk->sk_bound_dev_if;
+                fl.fl_ip_dport = inet_rsk(req)->rmt_port;
+                fl.fl_ip_sport = inet_sk(sk)->sport;
+
+                if (ip6_dst_lookup(sk, &dst, &fl))
+                        goto out;
+
+                if (final_p)
+                        ipv6_addr_copy(&fl.fl6_dst, final_p);
+
+                if ((xfrm_lookup(&dst, &fl, sk, 0)) < 0)
+                        goto out;
+        } 
+
+        newsk = dccp_create_openreq_child(sk, req, skb);
+        if (newsk == NULL)
+                goto out;
+
+        /*
+         * No need to charge this sock to the relevant IPv6 refcnt debug socks
+         * count here, dccp_create_openreq_child now does this for us, see the
+         * comment in that function for the gory details. -acme
+         */
+
+        ip6_dst_store(newsk, dst, NULL);
+        newsk->sk_route_caps = dst->dev->features &
+                ~(NETIF_F_IP_CSUM | NETIF_F_TSO);
+
+        newdp6 = (struct dccp6_sock *)newsk;
+        newinet = inet_sk(newsk);
+        newinet->pinet6 = &newdp6->inet6;
+        newdp = dccp_sk(newsk);
+        newnp = inet6_sk(newsk);
+
+        memcpy(newnp, np, sizeof(struct ipv6_pinfo));
+
+        ipv6_addr_copy(&newnp->daddr, &ireq6->rmt_addr);
+        ipv6_addr_copy(&newnp->saddr, &ireq6->loc_addr);
+        ipv6_addr_copy(&newnp->rcv_saddr, &ireq6->loc_addr);
+        newsk->sk_bound_dev_if = ireq6->iif;
+
+        /* Now IPv6 options... 
+
+           First: no IPv4 options.
+         */
+        newinet->opt = NULL;
+
+        /* Clone RX bits */
+        newnp->rxopt.all = np->rxopt.all;
+
+        /* Clone pktoptions received with SYN */
+        newnp->pktoptions = NULL;
+        if (ireq6->pktopts != NULL) {
+                newnp->pktoptions = skb_clone(ireq6->pktopts, GFP_ATOMIC);
+                kfree_skb(ireq6->pktopts);
+                ireq6->pktopts = NULL;
+                if (newnp->pktoptions)
+                        skb_set_owner_r(newnp->pktoptions, newsk);
+        }
+        newnp->opt        = NULL;
+        newnp->mcast_oif  = inet6_iif(skb);
+        newnp->mcast_hops = skb->nh.ipv6h->hop_limit;
+
+        /* Clone native IPv6 options from listening socket (if any)
+
+           Yes, keeping reference count would be much more clever,
+           but we make one more one thing there: reattach optmem
+           to newsk.
+         */
+        if (opt) {
+                newnp->opt = ipv6_dup_options(newsk, opt);
+                if (opt != np->opt)
+                        sock_kfree_s(sk, opt, opt->tot_len);
+        }
+
+        inet_csk(newsk)->icsk_ext_hdr_len = 0;
+        if (newnp->opt)
+                inet_csk(newsk)->icsk_ext_hdr_len = (newnp->opt->opt_nflen +
+                                                     newnp->opt->opt_flen);
+
+        dccp_sync_mss(newsk, dst_mtu(dst));
+
+        newinet->daddr = newinet->saddr = newinet->rcv_saddr = LOOPBACK4_IPV6;
+
+        __inet6_hash(&dccp_hashinfo, newsk);
+        inet_inherit_port(&dccp_hashinfo, sk, newsk);
+
+        return newsk;
+
+out_overflow:
+        NET_INC_STATS_BH(LINUX_MIB_LISTENOVERFLOWS);
+out:
+        NET_INC_STATS_BH(LINUX_MIB_LISTENDROPS);
+        if (opt && opt != np->opt)
+                sock_kfree_s(sk, opt, opt->tot_len);
+        dst_release(dst);
+        return NULL;
+}
+
+/* The socket must have it's spinlock held when we get
+ * here.
+ *
+ * We have a potential double-lock case here, so even when
+ * doing backlog processing we use the BH locking scheme.
+ * This is because we cannot sleep with the original spinlock
+ * held.
+ */
+static int dccp_v6_do_rcv(struct sock *sk, struct sk_buff *skb)
+{
+        struct ipv6_pinfo *np = inet6_sk(sk);
+        struct sk_buff *opt_skb = NULL;
+
+        /* Imagine: socket is IPv6. IPv4 packet arrives,
+           goes to IPv4 receive handler and backlogged.
+           From backlog it always goes here. Kerboom...
+           Fortunately, dccp_rcv_established and rcv_established
+           handle them correctly, but it is not case with
+           dccp_v6_hnd_req and dccp_v6_ctl_send_reset().   --ANK
+         */
+
+        if (skb->protocol == htons(ETH_P_IP))
+                return dccp_v4_do_rcv(sk, skb);
+
+        if (sk_filter(sk, skb, 0))
+                goto discard;
+
+        /*
+         *      socket locking is here for SMP purposes as backlog rcv
+         *      is currently called with bh processing disabled.
+         */
+
+        /* Do Stevens' IPV6_PKTOPTIONS.
+
+           Yes, guys, it is the only place in our code, where we
+           may make it not affecting IPv4.
+           The rest of code is protocol independent,
+           and I do not like idea to uglify IPv4.
+
+           Actually, all the idea behind IPV6_PKTOPTIONS
+           looks not very well thought. For now we latch
+           options, received in the last packet, enqueued
+           by tcp. Feel free to propose better solution.
+                                               --ANK (980728)
+         */
+        if (np->rxopt.all)
+                opt_skb = skb_clone(skb, GFP_ATOMIC);
+
+        if (sk->sk_state == DCCP_OPEN) { /* Fast path */
+                if (dccp_rcv_established(sk, skb, dccp_hdr(skb), skb->len))
+                        goto reset;
+                return 0;
+        }
+
+        if (sk->sk_state == DCCP_LISTEN) { 
+                struct sock *nsk = dccp_v6_hnd_req(sk, skb);
+                if (!nsk)
+                        goto discard;
+
+                /*
+                 * Queue it on the new socket if the new socket is active,
+                 * otherwise we just shortcircuit this and continue with
+                 * the new socket..
+                 */
+                if(nsk != sk) {
+                        if (dccp_child_process(sk, nsk, skb))
+                                goto reset;
+                        if (opt_skb)
+                                __kfree_skb(opt_skb);
+                        return 0;
+                }
+        }
+
+        if (dccp_rcv_state_process(sk, skb, dccp_hdr(skb), skb->len))
+                goto reset;
+        return 0;
+
+reset:
+        dccp_v6_ctl_send_reset(skb);
+discard:
+        if (opt_skb)
+                __kfree_skb(opt_skb);
+        kfree_skb(skb);
+        return 0;
+}
+
+static int dccp_v6_rcv(struct sk_buff **pskb, unsigned int *nhoffp)
+{
+        const struct dccp_hdr *dh;
+        struct sk_buff *skb = *pskb;
+        struct sock *sk;
+
+        /* Step 1: Check header basics: */
+
+        if (dccp_invalid_packet(skb))
+                goto discard_it;
+
+        dh = dccp_hdr(skb);
+
+        DCCP_SKB_CB(skb)->dccpd_seq  = dccp_hdr_seq(skb);
+        DCCP_SKB_CB(skb)->dccpd_type = dh->dccph_type;
+
+        if (dccp_packet_without_ack(skb))
+                DCCP_SKB_CB(skb)->dccpd_ack_seq = DCCP_PKT_WITHOUT_ACK_SEQ;
+        else
+                DCCP_SKB_CB(skb)->dccpd_ack_seq = dccp_hdr_ack_seq(skb);
+
+        /* Step 2:
+         *      Look up flow ID in table and get corresponding socket */
+        sk = __inet6_lookup(&dccp_hashinfo, &skb->nh.ipv6h->saddr,
+                            dh->dccph_sport,
+                            &skb->nh.ipv6h->daddr, ntohs(dh->dccph_dport),
+                            inet6_iif(skb));
+        /* 
+         * Step 2:
+         *      If no socket ...
+         *              Generate Reset(No Connection) unless P.type == Reset
+         *              Drop packet and return
+         */
+        if (sk == NULL)
+                goto no_dccp_socket;
+
+        /* 
+         * Step 2:
+         *      ... or S.state == TIMEWAIT,
+         *              Generate Reset(No Connection) unless P.type == Reset
+         *              Drop packet and return
+         */
+               
+        if (sk->sk_state == DCCP_TIME_WAIT)
+                goto do_time_wait;
+
+        if (!xfrm6_policy_check(sk, XFRM_POLICY_IN, skb))
+                goto discard_and_relse;
+
+        return sk_receive_skb(sk, skb) ? -1 : 0;
+
+no_dccp_socket:
+        if (!xfrm6_policy_check(NULL, XFRM_POLICY_IN, skb))
+                goto discard_it;
+        /*
+         * Step 2:
+         *              Generate Reset(No Connection) unless P.type == Reset
+         *              Drop packet and return
+         */
+        if (dh->dccph_type != DCCP_PKT_RESET) {
+                DCCP_SKB_CB(skb)->dccpd_reset_code =
+                                        DCCP_RESET_CODE_NO_CONNECTION;
+                dccp_v6_ctl_send_reset(skb);
+        }
+discard_it:
+
+        /*
+         *      Discard frame
+         */
+
+        kfree_skb(skb);
+        return 0;
+
+discard_and_relse:
+        sock_put(sk);
+        goto discard_it;
+
+do_time_wait:
+        inet_twsk_put((struct inet_timewait_sock *)sk);
+        goto no_dccp_socket;
+}
+
+static struct inet_connection_sock_af_ops dccp_ipv6_af_ops = {
+        .queue_xmit     =       inet6_csk_xmit,
+        .send_check     =       dccp_v6_send_check,
+        .rebuild_header =       inet6_sk_rebuild_header,
+        .conn_request   =       dccp_v6_conn_request,
+        .syn_recv_sock  =       dccp_v6_request_recv_sock,
+        .net_header_len =       sizeof(struct ipv6hdr),
+        .setsockopt     =       ipv6_setsockopt,
+        .getsockopt     =       ipv6_getsockopt,
+        .addr2sockaddr  =       inet6_csk_addr2sockaddr,
+        .sockaddr_len   =       sizeof(struct sockaddr_in6)
+};
+
+/*
+ *      DCCP over IPv4 via INET6 API
+ */
+static struct inet_connection_sock_af_ops dccp_ipv6_mapped = {
+        .queue_xmit     =       ip_queue_xmit,
+        .send_check     =       dccp_v4_send_check,
+        .rebuild_header =       inet_sk_rebuild_header,
+        .conn_request   =       dccp_v6_conn_request,
+        .syn_recv_sock  =       dccp_v6_request_recv_sock,
+        .net_header_len =       sizeof(struct iphdr),
+        .setsockopt     =       ipv6_setsockopt,
+        .getsockopt     =       ipv6_getsockopt,
+        .addr2sockaddr  =       inet6_csk_addr2sockaddr,
+        .sockaddr_len   =       sizeof(struct sockaddr_in6)
+};
+
+/* NOTE: A lot of things set to zero explicitly by call to
+ *       sk_alloc() so need not be done here.
+ */
+static int dccp_v6_init_sock(struct sock *sk)
+{
+        int err = dccp_v4_init_sock(sk);
+
+        if (err == 0)
+                inet_csk(sk)->icsk_af_ops = &dccp_ipv6_af_ops;
+
+        return err;
+}
+
+static int dccp_v6_destroy_sock(struct sock *sk)
+{
+        dccp_v4_destroy_sock(sk);
+        return inet6_destroy_sock(sk);
+}
+
+static struct proto dccp_v6_prot = {
+        .name                   = "DCCPv6",
+        .owner                  = THIS_MODULE,
+        .close                  = dccp_close,
+        .connect                = dccp_v6_connect,
+        .disconnect             = dccp_disconnect,
+        .ioctl                  = dccp_ioctl,
+        .init                   = dccp_v6_init_sock,
+        .setsockopt             = dccp_setsockopt,
+        .getsockopt             = dccp_getsockopt,
+        .sendmsg                = dccp_sendmsg,
+        .recvmsg                = dccp_recvmsg,
+        .backlog_rcv            = dccp_v6_do_rcv,
+        .hash                   = dccp_v6_hash,
+        .unhash                 = dccp_unhash,
+        .accept                 = inet_csk_accept,
+        .get_port               = dccp_v6_get_port,
+        .shutdown               = dccp_shutdown,
+        .destroy                = dccp_v6_destroy_sock,
+        .orphan_count           = &dccp_orphan_count,
+        .max_header             = MAX_DCCP_HEADER,
+        .obj_size               = sizeof(struct dccp6_sock),
+        .rsk_prot               = &dccp6_request_sock_ops,
+        .twsk_prot              = &dccp6_timewait_sock_ops,
+};
+
+static struct inet6_protocol dccp_v6_protocol = {
+        .handler        =       dccp_v6_rcv,
+        .err_handler    =       dccp_v6_err,
+        .flags          =       INET6_PROTO_NOPOLICY | INET6_PROTO_FINAL,
+};
+
+static struct proto_ops inet6_dccp_ops = {
+        .family         = PF_INET6,
+        .owner          = THIS_MODULE,
+        .release        = inet6_release,
+        .bind           = inet6_bind,
+        .connect        = inet_stream_connect,
+        .socketpair     = sock_no_socketpair,
+        .accept         = inet_accept,
+        .getname        = inet6_getname,
+        .poll           = dccp_poll,
+        .ioctl          = inet6_ioctl,
+        .listen         = inet_dccp_listen,
+        .shutdown       = inet_shutdown,
+        .setsockopt     = sock_common_setsockopt,
+        .getsockopt     = sock_common_getsockopt,
+        .sendmsg        = inet_sendmsg,
+        .recvmsg        = sock_common_recvmsg,
+        .mmap           = sock_no_mmap,
+        .sendpage       = sock_no_sendpage,
+};
+
+static struct inet_protosw dccp_v6_protosw = {
+        .type           = SOCK_DCCP,
+        .protocol       = IPPROTO_DCCP,
+        .prot           = &dccp_v6_prot,
+        .ops            = &inet6_dccp_ops,
+        .capability     = -1,
+        .flags          = INET_PROTOSW_ICSK,
+};
+
+static int __init dccp_v6_init(void)
+{
+        int err = proto_register(&dccp_v6_prot, 1);
+
+        if (err != 0)
+                goto out;
+
+        err = inet6_add_protocol(&dccp_v6_protocol, IPPROTO_DCCP);
+        if (err != 0)
+                goto out_unregister_proto;
+
+        inet6_register_protosw(&dccp_v6_protosw);
+out:
+        return err;
+out_unregister_proto:
+        proto_unregister(&dccp_v6_prot);
+        goto out;
+}
+
+static void __exit dccp_v6_exit(void)
+{
+        inet6_del_protocol(&dccp_v6_protocol, IPPROTO_DCCP);
+        inet6_unregister_protosw(&dccp_v6_protosw);
+        proto_unregister(&dccp_v6_prot);
+}
+
+module_init(dccp_v6_init);
+module_exit(dccp_v6_exit);
+
+/*
+ * __stringify doesn't likes enums, so use SOCK_DCCP (6) and IPPROTO_DCCP (33)
+ * values directly, Also cover the case where the protocol is not specified,
+ * i.e. net-pf-PF_INET6-proto-0-type-SOCK_DCCP
+ */
+MODULE_ALIAS("net-pf-" __stringify(PF_INET6) "-proto-33-type-6");
+MODULE_ALIAS("net-pf-" __stringify(PF_INET6) "-proto-0-type-6");
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("Arnaldo Carvalho de Melo <acme@mandriva.com>");
+MODULE_DESCRIPTION("DCCPv6 - Datagram Congestion Controlled Protocol");
diff --git a/net/dccp/ipv6.h b/net/dccp/ipv6.h
new file mode 100644
index 000000000000..e4d4e9309270
--- /dev/null
+++ b/net/dccp/ipv6.h
@@ -0,0 +1,37 @@
+#ifndef _DCCP_IPV6_H
+#define _DCCP_IPV6_H
+/*
+ *  net/dccp/ipv6.h
+ *
+ *  An implementation of the DCCP protocol
+ *  Copyright (c) 2005 Arnaldo Carvalho de Melo <acme@ghostprotocols.net>
+ *
+ *      This program is free software; you can redistribute it and/or modify it
+ *      under the terms of the GNU General Public License version 2 as
+ *      published by the Free Software Foundation.
+ */
+
+#include <linux/config.h>
+#include <linux/dccp.h>
+#include <linux/ipv6.h>
+
+struct dccp6_sock {
+        struct dccp_sock  dccp;
+        /*
+         * ipv6_pinfo has to be the last member of dccp6_sock,
+         * see inet6_sk_generic.
+         */
+        struct ipv6_pinfo inet6;
+};
+
+struct dccp6_request_sock {
+        struct dccp_request_sock  dccp;
+        struct inet6_request_sock inet6;
+};
+
+struct dccp6_timewait_sock {
+        struct inet_timewait_sock   inet;
+        struct inet6_timewait_sock  tw6;
+};
+
+#endif /* _DCCP_IPV6_H */
diff --git a/net/dccp/minisocks.c b/net/dccp/minisocks.c
index 1393461898bb..29261fc198e7 100644
--- a/net/dccp/minisocks.c
+++ b/net/dccp/minisocks.c
@@ -40,6 +40,8 @@ struct inet_timewait_death_row dccp_death_row = {
                                             (unsigned long)&dccp_death_row),
 };
 
+EXPORT_SYMBOL_GPL(dccp_death_row);
+
 void dccp_time_wait(struct sock *sk, int state, int timeo)
 {
         struct inet_timewait_sock *tw = NULL;
@@ -50,7 +52,18 @@ void dccp_time_wait(struct sock *sk, int state, int timeo)
         if (tw != NULL) {
                 const struct inet_connection_sock *icsk = inet_csk(sk);
                 const int rto = (icsk->icsk_rto << 2) - (icsk->icsk_rto >> 1);
-
+#if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
+                if (tw->tw_family == PF_INET6) {
+                        const struct ipv6_pinfo *np = inet6_sk(sk);
+                        struct inet6_timewait_sock *tw6;
+
+                        tw->tw_ipv6_offset = inet6_tw_offset(sk->sk_prot);
+                        tw6 = inet6_twsk((struct sock *)tw);
+                        ipv6_addr_copy(&tw6->tw_v6_daddr, &np->daddr);
+                        ipv6_addr_copy(&tw6->tw_v6_rcv_saddr, &np->rcv_saddr);
+                        tw->tw_ipv6only = np->ipv6only;
+                }
+#endif
                 /* Linkage updates. */
                 __inet_twsk_hashdance(tw, sk, &dccp_hashinfo);
 
@@ -170,6 +183,8 @@ out_free:
         return newsk;
 }
 
+EXPORT_SYMBOL_GPL(dccp_create_openreq_child);
+
 /* 
  * Process an incoming packet for RESPOND sockets represented
  * as an request_sock.
@@ -214,7 +229,7 @@ struct sock *dccp_check_req(struct sock *sk, struct sk_buff *skb,
                 goto drop;
         }
 
-        child = dccp_v4_request_recv_sock(sk, skb, req, NULL);
+        child = inet_csk(sk)->icsk_af_ops->syn_recv_sock(sk, skb, req, NULL);
         if (child == NULL)
                 goto listen_overflow;
 
@@ -236,6 +251,8 @@ drop:
         goto out;
 }
 
+EXPORT_SYMBOL_GPL(dccp_check_req);
+
 /*
  *  Queue segment on the new socket if the new socket is active,
  *  otherwise we just shortcircuit this and continue with
@@ -266,3 +283,5 @@ int dccp_child_process(struct sock *parent, struct sock *child,
         sock_put(child);
         return ret;
 }
+
+EXPORT_SYMBOL_GPL(dccp_child_process);
diff --git a/net/dccp/output.c b/net/dccp/output.c
index 74ff87025878..efd7ffb903a1 100644
--- a/net/dccp/output.c
+++ b/net/dccp/output.c
@@ -15,6 +15,7 @@
 #include <linux/kernel.h>
 #include <linux/skbuff.h>
 
+#include <net/inet_sock.h>
 #include <net/sock.h>
 
 #include "ackvec.h"
@@ -43,6 +44,7 @@ static int dccp_transmit_skb(struct sock *sk, struct sk_buff *skb)
 {
         if (likely(skb != NULL)) {
                 const struct inet_sock *inet = inet_sk(sk);
+                const struct inet_connection_sock *icsk = inet_csk(sk);
                 struct dccp_sock *dp = dccp_sk(sk);
                 struct dccp_skb_cb *dcb = DCCP_SKB_CB(skb);
                 struct dccp_hdr *dh;
@@ -108,8 +110,7 @@ static int dccp_transmit_skb(struct sock *sk, struct sk_buff *skb)
                         break;
                 }
 
-                dh->dccph_checksum = dccp_v4_checksum(skb, inet->saddr,
-                                                      inet->daddr);
+                icsk->icsk_af_ops->send_check(sk, skb->len, skb);
 
                 if (set_ack)
                         dccp_event_ack_sent(sk);
@@ -117,7 +118,7 @@ static int dccp_transmit_skb(struct sock *sk, struct sk_buff *skb)
                 DCCP_INC_STATS(DCCP_MIB_OUTSEGS);
 
                 memset(&(IPCB(skb)->opt), 0, sizeof(IPCB(skb)->opt));
-                err = ip_queue_xmit(skb, 0);
+                err = icsk->icsk_af_ops->queue_xmit(skb, 0);
                 if (err <= 0)
                         return err;
 
@@ -134,20 +135,13 @@ static int dccp_transmit_skb(struct sock *sk, struct sk_buff *skb)
 
 unsigned int dccp_sync_mss(struct sock *sk, u32 pmtu)
 {
+        struct inet_connection_sock *icsk = inet_csk(sk);
         struct dccp_sock *dp = dccp_sk(sk);
-        int mss_now;
-
-        /*
-         * FIXME: we really should be using the af_specific thing to support
-         *        IPv6.
-         * mss_now = pmtu - tp->af_specific->net_header_len -
-         *           sizeof(struct dccp_hdr) - sizeof(struct dccp_hdr_ext);
-         */
-        mss_now = pmtu - sizeof(struct iphdr) - sizeof(struct dccp_hdr) -
-                  sizeof(struct dccp_hdr_ext);
+        int mss_now = (pmtu - icsk->icsk_af_ops->net_header_len -
+                       sizeof(struct dccp_hdr) - sizeof(struct dccp_hdr_ext));
 
         /* Now subtract optional transport overhead */
-        mss_now -= dp->dccps_ext_header_len;
+        mss_now -= icsk->icsk_ext_hdr_len;
 
         /*
          * FIXME: this should come from the CCID infrastructure, where, say,
@@ -160,12 +154,14 @@ unsigned int dccp_sync_mss(struct sock *sk, u32 pmtu)
         mss_now -= ((5 + 6 + 10 + 6 + 6 + 6 + 3) / 4) * 4;
 
         /* And store cached results */
-        dp->dccps_pmtu_cookie = pmtu;
+        icsk->icsk_pmtu_cookie = pmtu;
         dp->dccps_mss_cache = mss_now;
 
         return mss_now;
 }
 
+EXPORT_SYMBOL_GPL(dccp_sync_mss);
+
 void dccp_write_space(struct sock *sk)
 {
         read_lock(&sk->sk_callback_lock);
@@ -266,7 +262,7 @@ int dccp_write_xmit(struct sock *sk, struct sk_buff *skb, long *timeo)
 
 int dccp_retransmit_skb(struct sock *sk, struct sk_buff *skb)
 {
-        if (inet_sk_rebuild_header(sk) != 0)
+        if (inet_csk(sk)->icsk_af_ops->rebuild_header(sk) != 0)
                 return -EHOSTUNREACH; /* Routing failure or similar. */
 
         return dccp_transmit_skb(sk, (skb_cloned(skb) ?
@@ -321,6 +317,8 @@ struct sk_buff *dccp_make_response(struct sock *sk, struct dst_entry *dst,
         return skb;
 }
 
+EXPORT_SYMBOL_GPL(dccp_make_response);
+
 struct sk_buff *dccp_make_reset(struct sock *sk, struct dst_entry *dst,
                                 const enum dccp_reset_codes code)
                                    
@@ -377,6 +375,7 @@ struct sk_buff *dccp_make_reset(struct sock *sk, struct dst_entry *dst,
  */
 static inline void dccp_connect_init(struct sock *sk)
 {
+        struct dccp_sock *dp = dccp_sk(sk);
         struct dst_entry *dst = __sk_dst_get(sk);
         struct inet_connection_sock *icsk = inet_csk(sk);
 
@@ -385,10 +384,16 @@ static inline void dccp_connect_init(struct sock *sk)
         
         dccp_sync_mss(sk, dst_mtu(dst));
 
-        /*
-         * FIXME: set dp->{dccps_swh,dccps_swl}, with
-         * something like dccp_inc_seq
-         */
+        dccp_update_gss(sk, dp->dccps_iss);
+        /*
+         * SWL and AWL are initially adjusted so that they are not less than
+         * the initial Sequence Numbers received and sent, respectively:
+         *      SWL := max(GSR + 1 - floor(W/4), ISR),
+         *      AWL := max(GSS - W' + 1, ISS).
+         * These adjustments MUST be applied only at the beginning of the
+         * connection.
+         */
+        dccp_set_seqno(&dp->dccps_awl, max48(dp->dccps_awl, dp->dccps_iss));
 
         icsk->icsk_retransmits = 0;
 }
@@ -420,6 +425,8 @@ int dccp_connect(struct sock *sk)
         return 0;
 }
 
+EXPORT_SYMBOL_GPL(dccp_connect);
+
 void dccp_send_ack(struct sock *sk)
 {
         /* If we have been reset, we may not send again. */
diff --git a/net/dccp/proto.c b/net/dccp/proto.c
index 8a6b2a9e4581..65b11ea90d85 100644
--- a/net/dccp/proto.c
+++ b/net/dccp/proto.c
@@ -24,7 +24,7 @@
 #include <net/checksum.h>
 
 #include <net/inet_common.h>
-#include <net/ip.h>
+#include <net/inet_sock.h>
 #include <net/protocol.h>
 #include <net/sock.h>
 #include <net/xfrm.h>
@@ -34,15 +34,18 @@
 #include <linux/timer.h>
 #include <linux/delay.h>
 #include <linux/poll.h>
-#include <linux/dccp.h>
 
 #include "ccid.h"
 #include "dccp.h"
 
 DEFINE_SNMP_STAT(struct dccp_mib, dccp_statistics) __read_mostly;
 
+EXPORT_SYMBOL_GPL(dccp_statistics);
+
 atomic_t dccp_orphan_count = ATOMIC_INIT(0);
 
+EXPORT_SYMBOL_GPL(dccp_orphan_count);
+
 static struct net_protocol dccp_protocol = {
         .handler        = dccp_v4_rcv,
         .err_handler    = dccp_v4_err,
@@ -149,6 +152,8 @@ int dccp_disconnect(struct sock *sk, int flags)
         return err;
 }
 
+EXPORT_SYMBOL_GPL(dccp_disconnect);
+
 /*
  *      Wait for a DCCP event.
  *
@@ -156,8 +161,8 @@ int dccp_disconnect(struct sock *sk, int flags)
  *      take care of normal races (between the test and the event) and we don't
  *      go look at any of the socket buffers directly.
  */
-static unsigned int dccp_poll(struct file *file, struct socket *sock,
-                              poll_table *wait)
+unsigned int dccp_poll(struct file *file, struct socket *sock,
+                       poll_table *wait)
 {
         unsigned int mask;
         struct sock *sk = sock->sk;
@@ -205,12 +210,16 @@ static unsigned int dccp_poll(struct file *file, struct socket *sock,
         return mask;
 }
 
+EXPORT_SYMBOL_GPL(dccp_poll);
+
 int dccp_ioctl(struct sock *sk, int cmd, unsigned long arg)
 {
         dccp_pr_debug("entry\n");
         return -ENOIOCTLCMD;
 }
 
+EXPORT_SYMBOL_GPL(dccp_ioctl);
+
 static int dccp_setsockopt_service(struct sock *sk, const u32 service,
                                    char __user *optval, int optlen)
 {
@@ -254,7 +263,9 @@ int dccp_setsockopt(struct sock *sk, int level, int optname,
         int val;
 
         if (level != SOL_DCCP)
-                return ip_setsockopt(sk, level, optname, optval, optlen);
+                return inet_csk(sk)->icsk_af_ops->setsockopt(sk, level,
+                                                             optname, optval,
+                                                             optlen);
 
         if (optlen < sizeof(int))
                 return -EINVAL;
@@ -282,6 +293,8 @@ int dccp_setsockopt(struct sock *sk, int level, int optname,
         return err;
 }
 
+EXPORT_SYMBOL_GPL(dccp_setsockopt);
+
 static int dccp_getsockopt_service(struct sock *sk, int len,
                                    u32 __user *optval,
                                    int __user *optlen)
@@ -320,8 +333,9 @@ int dccp_getsockopt(struct sock *sk, int level, int optname,
         int val, len;
 
         if (level != SOL_DCCP)
-                return ip_getsockopt(sk, level, optname, optval, optlen);
-
+                return inet_csk(sk)->icsk_af_ops->getsockopt(sk, level,
+                                                             optname, optval,
+                                                             optlen);
         if (get_user(len, optlen))
                 return -EFAULT;
 
@@ -354,6 +368,8 @@ int dccp_getsockopt(struct sock *sk, int level, int optname,
         return 0;
 }
 
+EXPORT_SYMBOL_GPL(dccp_getsockopt);
+
 int dccp_sendmsg(struct kiocb *iocb, struct sock *sk, struct msghdr *msg,
                  size_t len)
 {
@@ -410,6 +426,8 @@ out_discard:
         goto out_release;
 }
 
+EXPORT_SYMBOL_GPL(dccp_sendmsg);
+
 int dccp_recvmsg(struct kiocb *iocb, struct sock *sk, struct msghdr *msg,
                  size_t len, int nonblock, int flags, int *addr_len)
 {
@@ -507,7 +525,9 @@ out:
         return len;
 }
 
-static int inet_dccp_listen(struct socket *sock, int backlog)
+EXPORT_SYMBOL_GPL(dccp_recvmsg);
+
+int inet_dccp_listen(struct socket *sock, int backlog)
 {
         struct sock *sk = sock->sk;
         unsigned char old_state;
@@ -543,6 +563,8 @@ out:
         return err;
 }
 
+EXPORT_SYMBOL_GPL(inet_dccp_listen);
+
 static const unsigned char dccp_new_state[] = {
         /* current state:   new state:      action:     */
         [0]               = DCCP_CLOSED,
@@ -648,12 +670,16 @@ adjudge_to_death:
         sock_put(sk);
 }
 
+EXPORT_SYMBOL_GPL(dccp_close);
+
 void dccp_shutdown(struct sock *sk, int how)
 {
         dccp_pr_debug("entry\n");
 }
 
-static struct proto_ops inet_dccp_ops = {
+EXPORT_SYMBOL_GPL(dccp_shutdown);
+
+static const struct proto_ops inet_dccp_ops = {
         .family         = PF_INET,
         .owner          = THIS_MODULE,
         .release        = inet_release,
@@ -681,11 +707,11 @@ extern struct net_proto_family inet_family_ops;
 static struct inet_protosw dccp_v4_protosw = {
         .type           = SOCK_DCCP,
         .protocol       = IPPROTO_DCCP,
-        .prot           = &dccp_v4_prot,
+        .prot           = &dccp_prot,
         .ops            = &inet_dccp_ops,
         .capability     = -1,
         .no_check       = 0,
-        .flags          = 0,
+        .flags          = INET_PROTOSW_ICSK,
 };
 
 /*
@@ -760,13 +786,15 @@ MODULE_PARM_DESC(thash_entries, "Number of ehash buckets");
 int dccp_debug;
 module_param(dccp_debug, int, 0444);
 MODULE_PARM_DESC(dccp_debug, "Enable debug messages");
+
+EXPORT_SYMBOL_GPL(dccp_debug);
 #endif
 
 static int __init dccp_init(void)
 {
         unsigned long goal;
         int ehash_order, bhash_order, i;
-        int rc = proto_register(&dccp_v4_prot, 1);
+        int rc = proto_register(&dccp_prot, 1);
 
         if (rc)
                 goto out;
@@ -869,7 +897,7 @@ out_free_bind_bucket_cachep:
         kmem_cache_destroy(dccp_hashinfo.bind_bucket_cachep);
         dccp_hashinfo.bind_bucket_cachep = NULL;
 out_proto_unregister:
-        proto_unregister(&dccp_v4_prot);
+        proto_unregister(&dccp_prot);
         goto out;
 }
 
@@ -892,7 +920,7 @@ static void __exit dccp_fini(void)
                    get_order(dccp_hashinfo.ehash_size *
                              sizeof(struct inet_ehash_bucket)));
         kmem_cache_destroy(dccp_hashinfo.bind_bucket_cachep);
-        proto_unregister(&dccp_v4_prot);
+        proto_unregister(&dccp_prot);
 }
 
 module_init(dccp_init);
diff --git a/net/decnet/af_decnet.c b/net/decnet/af_decnet.c
index d402e9020c68..78ec5344be86 100644
--- a/net/decnet/af_decnet.c
+++ b/net/decnet/af_decnet.c
@@ -149,7 +149,7 @@ static void dn_keepalive(struct sock *sk);
 #define DN_SK_HASH_MASK (DN_SK_HASH_SIZE - 1)
 
 
-static struct proto_ops dn_proto_ops;
+static const struct proto_ops dn_proto_ops;
 static DEFINE_RWLOCK(dn_hash_lock);
 static struct hlist_head dn_sk_hash[DN_SK_HASH_SIZE];
 static struct hlist_head dn_wild_sk;
@@ -1252,7 +1252,7 @@ static int dn_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg)
                 break;
 
         default:
-                err = dev_ioctl(cmd, (void __user *)arg);
+                err = -ENOIOCTLCMD;
                 break;
         }
 
@@ -2342,7 +2342,7 @@ static struct net_proto_family	dn_family_ops = {
         .owner  =       THIS_MODULE,
 };
 
-static struct proto_ops dn_proto_ops = {
+static const struct proto_ops dn_proto_ops = {
         .family =       AF_DECnet,
         .owner =        THIS_MODULE,
         .release =      dn_release,
diff --git a/net/decnet/dn_neigh.c b/net/decnet/dn_neigh.c
index 8d0cc3cf3e49..33ab256cfd4a 100644
--- a/net/decnet/dn_neigh.c
+++ b/net/decnet/dn_neigh.c
@@ -408,11 +408,14 @@ int dn_neigh_router_hello(struct sk_buff *skb)
                         }
                 }
 
-                if (!dn_db->router) {
-                        dn_db->router = neigh_clone(neigh);
-                } else {
-                        if (msg->priority > ((struct dn_neigh *)dn_db->router)->priority)
-                                neigh_release(xchg(&dn_db->router, neigh_clone(neigh)));
+                /* Only use routers in our area */
+                if ((dn_ntohs(src)>>10) == dn_ntohs((decnet_address)>>10)) {
+                        if (!dn_db->router) {
+                                dn_db->router = neigh_clone(neigh);
+                        } else {
+                                if (msg->priority > ((struct dn_neigh *)dn_db->router)->priority)
+                                        neigh_release(xchg(&dn_db->router, neigh_clone(neigh)));
+                        }
                 }
                 write_unlock(&neigh->lock);
                 neigh_release(neigh);
diff --git a/net/decnet/dn_nsp_in.c b/net/decnet/dn_nsp_in.c
index 369f25b60f3f..44bda85e678f 100644
--- a/net/decnet/dn_nsp_in.c
+++ b/net/decnet/dn_nsp_in.c
@@ -793,7 +793,6 @@ static int dn_nsp_rx_packet(struct sk_buff *skb)
 got_it:
         if (sk != NULL) {
                 struct dn_scp *scp = DN_SK(sk);
-                int ret;
 
                 /* Reset backoff */
                 scp->nsp_rxtshift = 0;
@@ -807,21 +806,7 @@ got_it:
                                 goto free_out;
                 }
 
-                bh_lock_sock(sk);
-                ret = NET_RX_SUCCESS;
-                if (decnet_debug_level & 8)
-                        printk(KERN_DEBUG "NSP: 0x%02x 0x%02x 0x%04x 0x%04x %d\n",
-                                (int)cb->rt_flags, (int)cb->nsp_flags, 
-                                (int)cb->src_port, (int)cb->dst_port, 
-                                !!sock_owned_by_user(sk));
-                if (!sock_owned_by_user(sk))
-                        ret = dn_nsp_backlog_rcv(sk, skb);
-                else
-                        sk_add_backlog(sk, skb);
-                bh_unlock_sock(sk);
-                sock_put(sk);
-
-                return ret;
+                return sk_receive_skb(sk, skb);
         }
 
         return dn_nsp_no_socket(skb, reason);
diff --git a/net/econet/af_econet.c b/net/econet/af_econet.c
index 34fdac51df96..c792994d7952 100644
--- a/net/econet/af_econet.c
+++ b/net/econet/af_econet.c
@@ -31,6 +31,7 @@
 #include <linux/if_arp.h>
 #include <linux/wireless.h>
 #include <linux/skbuff.h>
+#include <linux/udp.h>
 #include <net/sock.h>
 #include <net/inet_common.h>
 #include <linux/stat.h>
@@ -45,7 +46,7 @@
 #include <asm/uaccess.h>
 #include <asm/system.h>
 
-static struct proto_ops econet_ops;
+static const struct proto_ops econet_ops;
 static struct hlist_head econet_sklist;
 static DEFINE_RWLOCK(econet_lock);
 
@@ -56,7 +57,7 @@ static struct net_device *net2dev_map[256];
 #define EC_PORT_IP      0xd2
 
 #ifdef CONFIG_ECONET_AUNUDP
-static spinlock_t aun_queue_lock;
+static DEFINE_SPINLOCK(aun_queue_lock);
 static struct socket *udpsock;
 #define AUN_PORT        0x8000
 
@@ -686,7 +687,7 @@ static int econet_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg
                         break;
 
                 default:
-                        return dev_ioctl(cmd, argp);
+                        return -ENOIOCTLCMD;
         }
         /*NOTREACHED*/
         return 0;
@@ -698,7 +699,7 @@ static struct net_proto_family econet_family_ops = {
         .owner  =       THIS_MODULE,
 };
 
-static struct proto_ops SOCKOPS_WRAPPED(econet_ops) = {
+static const struct proto_ops SOCKOPS_WRAPPED(econet_ops) = {
         .family =       PF_ECONET,
         .owner =        THIS_MODULE,
         .release =      econet_release,
diff --git a/net/ieee80211/ieee80211_rx.c b/net/ieee80211/ieee80211_rx.c
index 03efaacbdb73..4cc6f41c6930 100644
--- a/net/ieee80211/ieee80211_rx.c
+++ b/net/ieee80211/ieee80211_rx.c
@@ -410,9 +410,8 @@ int ieee80211_rx(struct ieee80211_device *ieee, struct sk_buff *skb,
                 return 1;
         }
 
-        if ((is_multicast_ether_addr(hdr->addr1) ||
-             is_broadcast_ether_addr(hdr->addr2)) ? ieee->host_mc_decrypt :
-            ieee->host_decrypt) {
+        if (is_multicast_ether_addr(hdr->addr1)
+            ? ieee->host_mc_decrypt : ieee->host_decrypt) {
                 int idx = 0;
                 if (skb->len >= hdrlen + 3)
                         idx = skb->data[hdrlen + 3] >> 6;
diff --git a/net/ipv4/Kconfig b/net/ipv4/Kconfig
index e55136ae09f4..011cca7ae02b 100644
--- a/net/ipv4/Kconfig
+++ b/net/ipv4/Kconfig
@@ -456,6 +456,14 @@ config TCP_CONG_BIC
         increase provides TCP friendliness.
         See http://www.csc.ncsu.edu/faculty/rhee/export/bitcp/
 
+config TCP_CONG_CUBIC
+        tristate "CUBIC TCP"
+        default m
+        ---help---
+        This is version 2.0 of BIC-TCP which uses a cubic growth function
+        among other techniques.
+        See http://www.csc.ncsu.edu/faculty/rhee/export/bitcp/cubic-paper.pdf
+
 config TCP_CONG_WESTWOOD
         tristate "TCP Westwood+"
         default m
diff --git a/net/ipv4/Makefile b/net/ipv4/Makefile
index f0435d00db6b..c54edd76de09 100644
--- a/net/ipv4/Makefile
+++ b/net/ipv4/Makefile
@@ -34,6 +34,7 @@ obj-$(CONFIG_INET_DIAG) += inet_diag.o
 obj-$(CONFIG_IP_ROUTE_MULTIPATH_CACHED) += multipath.o
 obj-$(CONFIG_INET_TCP_DIAG) += tcp_diag.o
 obj-$(CONFIG_TCP_CONG_BIC) += tcp_bic.o
+obj-$(CONFIG_TCP_CONG_CUBIC) += tcp_cubic.o
 obj-$(CONFIG_TCP_CONG_WESTWOOD) += tcp_westwood.o
 obj-$(CONFIG_TCP_CONG_HSTCP) += tcp_highspeed.o
 obj-$(CONFIG_TCP_CONG_HYBLA) += tcp_hybla.o
diff --git a/net/ipv4/af_inet.c b/net/ipv4/af_inet.c
index d368cf249000..966a071a408c 100644
--- a/net/ipv4/af_inet.c
+++ b/net/ipv4/af_inet.c
@@ -93,6 +93,7 @@
 #include <linux/smp_lock.h>
 #include <linux/inet.h>
 #include <linux/igmp.h>
+#include <linux/inetdevice.h>
 #include <linux/netdevice.h>
 #include <net/ip.h>
 #include <net/protocol.h>
@@ -302,6 +303,7 @@ lookup_protocol:
                 sk->sk_reuse = 1;
 
         inet = inet_sk(sk);
+        inet->is_icsk = INET_PROTOSW_ICSK & answer_flags;
 
         if (SOCK_RAW == sock->type) {
                 inet->num = protocol;
@@ -775,16 +777,16 @@ int inet_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg)
                         err = devinet_ioctl(cmd, (void __user *)arg);
                         break;
                 default:
-                        if (!sk->sk_prot->ioctl ||
-                            (err = sk->sk_prot->ioctl(sk, cmd, arg)) ==
-                                                                -ENOIOCTLCMD)
-                                err = dev_ioctl(cmd, (void __user *)arg);
+                        if (sk->sk_prot->ioctl)
+                                err = sk->sk_prot->ioctl(sk, cmd, arg);
+                        else
+                                err = -ENOIOCTLCMD;
                         break;
         }
         return err;
 }
 
-struct proto_ops inet_stream_ops = {
+const struct proto_ops inet_stream_ops = {
         .family =       PF_INET,
         .owner =        THIS_MODULE,
         .release =      inet_release,
@@ -805,7 +807,7 @@ struct proto_ops inet_stream_ops = {
         .sendpage =     tcp_sendpage
 };
 
-struct proto_ops inet_dgram_ops = {
+const struct proto_ops inet_dgram_ops = {
         .family =       PF_INET,
         .owner =        THIS_MODULE,
         .release =      inet_release,
@@ -830,7 +832,7 @@ struct proto_ops inet_dgram_ops = {
  * For SOCK_RAW sockets; should be the same as inet_dgram_ops but without
  * udp_poll
  */
-static struct proto_ops inet_sockraw_ops = {
+static const struct proto_ops inet_sockraw_ops = {
         .family =       PF_INET,
         .owner =        THIS_MODULE,
         .release =      inet_release,
@@ -869,7 +871,8 @@ static struct inet_protosw inetsw_array[] =
                 .ops =        &inet_stream_ops,
                 .capability = -1,
                 .no_check =   0,
-                .flags =      INET_PROTOSW_PERMANENT,
+                .flags =      INET_PROTOSW_PERMANENT |
+                              INET_PROTOSW_ICSK,
         },
 
         {
diff --git a/net/ipv4/ah4.c b/net/ipv4/ah4.c
index 035ad2c9e1ba..aed537fa2c88 100644
--- a/net/ipv4/ah4.c
+++ b/net/ipv4/ah4.c
@@ -6,6 +6,7 @@
 #include <linux/crypto.h>
 #include <linux/pfkeyv2.h>
 #include <net/icmp.h>
+#include <net/protocol.h>
 #include <asm/scatterlist.h>
 
 
diff --git a/net/ipv4/arp.c b/net/ipv4/arp.c
index b425748f02d7..37432088fe6d 100644
--- a/net/ipv4/arp.c
+++ b/net/ipv4/arp.c
@@ -86,6 +86,7 @@
 #include <linux/in.h>
 #include <linux/mm.h>
 #include <linux/inet.h>
+#include <linux/inetdevice.h>
 #include <linux/netdevice.h>
 #include <linux/etherdevice.h>
 #include <linux/fddidevice.h>
diff --git a/net/ipv4/devinet.c b/net/ipv4/devinet.c
index 04a6fe3e95a2..7b9bb28e2ee9 100644
--- a/net/ipv4/devinet.c
+++ b/net/ipv4/devinet.c
@@ -58,6 +58,7 @@
 #endif
 #include <linux/kmod.h>
 
+#include <net/arp.h>
 #include <net/ip.h>
 #include <net/route.h>
 #include <net/ip_fib.h>
diff --git a/net/ipv4/esp4.c b/net/ipv4/esp4.c
index 1b18ce66e7b7..73bfcae8af9c 100644
--- a/net/ipv4/esp4.c
+++ b/net/ipv4/esp4.c
@@ -9,6 +9,7 @@
 #include <linux/pfkeyv2.h>
 #include <linux/random.h>
 #include <net/icmp.h>
+#include <net/protocol.h>
 #include <net/udp.h>
 
 /* decapsulation data for use when post-processing */
diff --git a/net/ipv4/fib_frontend.c b/net/ipv4/fib_frontend.c
index 19b1b984d687..18f5e509281a 100644
--- a/net/ipv4/fib_frontend.c
+++ b/net/ipv4/fib_frontend.c
@@ -30,6 +30,7 @@
 #include <linux/errno.h>
 #include <linux/in.h>
 #include <linux/inet.h>
+#include <linux/inetdevice.h>
 #include <linux/netdevice.h>
 #include <linux/if_arp.h>
 #include <linux/skbuff.h>
diff --git a/net/ipv4/fib_hash.c b/net/ipv4/fib_hash.c
index 7ea0209cb169..e2890ec8159e 100644
--- a/net/ipv4/fib_hash.c
+++ b/net/ipv4/fib_hash.c
@@ -29,6 +29,7 @@
 #include <linux/errno.h>
 #include <linux/in.h>
 #include <linux/inet.h>
+#include <linux/inetdevice.h>
 #include <linux/netdevice.h>
 #include <linux/if_arp.h>
 #include <linux/proc_fs.h>
diff --git a/net/ipv4/fib_rules.c b/net/ipv4/fib_rules.c
index 0b298bbc1518..0dd4d06e456d 100644
--- a/net/ipv4/fib_rules.c
+++ b/net/ipv4/fib_rules.c
@@ -33,6 +33,7 @@
 #include <linux/errno.h>
 #include <linux/in.h>
 #include <linux/inet.h>
+#include <linux/inetdevice.h>
 #include <linux/netdevice.h>
 #include <linux/if_arp.h>
 #include <linux/proc_fs.h>
diff --git a/net/ipv4/fib_semantics.c b/net/ipv4/fib_semantics.c
index 6d2a6ac070e3..ef4724de7350 100644
--- a/net/ipv4/fib_semantics.c
+++ b/net/ipv4/fib_semantics.c
@@ -29,6 +29,7 @@
 #include <linux/errno.h>
 #include <linux/in.h>
 #include <linux/inet.h>
+#include <linux/inetdevice.h>
 #include <linux/netdevice.h>
 #include <linux/if_arp.h>
 #include <linux/proc_fs.h>
@@ -36,6 +37,7 @@
 #include <linux/netlink.h>
 #include <linux/init.h>
 
+#include <net/arp.h>
 #include <net/ip.h>
 #include <net/protocol.h>
 #include <net/route.h>
diff --git a/net/ipv4/fib_trie.c b/net/ipv4/fib_trie.c
index 705e3ce86df9..e320b32373e5 100644
--- a/net/ipv4/fib_trie.c
+++ b/net/ipv4/fib_trie.c
@@ -41,6 +41,13 @@
  *              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.
+ *
+ * Substantial contributions to this work comes from:
+ *
+ *              David S. Miller, <davem@davemloft.net>
+ *              Stephen Hemminger <shemminger@osdl.org>
+ *              Paul E. McKenney <paulmck@us.ibm.com>
+ *              Patrick McHardy <kaber@trash.net>
  */
 
 #define VERSION "0.404"
@@ -59,6 +66,7 @@
 #include <linux/errno.h>
 #include <linux/in.h>
 #include <linux/inet.h>
+#include <linux/inetdevice.h>
 #include <linux/netdevice.h>
 #include <linux/if_arp.h>
 #include <linux/proc_fs.h>
diff --git a/net/ipv4/icmp.c b/net/ipv4/icmp.c
index 92e23b2ad4d2..be5a519cd2f8 100644
--- a/net/ipv4/icmp.c
+++ b/net/ipv4/icmp.c
@@ -73,6 +73,7 @@
 #include <linux/socket.h>
 #include <linux/in.h>
 #include <linux/inet.h>
+#include <linux/inetdevice.h>
 #include <linux/netdevice.h>
 #include <linux/string.h>
 #include <linux/netfilter_ipv4.h>
diff --git a/net/ipv4/igmp.c b/net/ipv4/igmp.c
index 4a195c724f01..34758118c10c 100644
--- a/net/ipv4/igmp.c
+++ b/net/ipv4/igmp.c
@@ -91,6 +91,8 @@
 #include <linux/if_arp.h>
 #include <linux/rtnetlink.h>
 #include <linux/times.h>
+
+#include <net/arp.h>
 #include <net/ip.h>
 #include <net/protocol.h>
 #include <net/route.h>
diff --git a/net/ipv4/inet_connection_sock.c b/net/ipv4/inet_connection_sock.c
index 3fe021f1a566..ae20281d8deb 100644
--- a/net/ipv4/inet_connection_sock.c
+++ b/net/ipv4/inet_connection_sock.c
@@ -37,7 +37,8 @@ EXPORT_SYMBOL(inet_csk_timer_bug_msg);
  */
 int sysctl_local_port_range[2] = { 1024, 4999 };
 
-static inline int inet_csk_bind_conflict(struct sock *sk, struct inet_bind_bucket *tb)
+int inet_csk_bind_conflict(const struct sock *sk,
+                           const struct inet_bind_bucket *tb)
 {
         const u32 sk_rcv_saddr = inet_rcv_saddr(sk);
         struct sock *sk2;
@@ -62,11 +63,15 @@ static inline int inet_csk_bind_conflict(struct sock *sk, struct inet_bind_bucke
         return node != NULL;
 }
 
+EXPORT_SYMBOL_GPL(inet_csk_bind_conflict);
+
 /* Obtain a reference to a local port for the given sock,
  * if snum is zero it means select any available local port.
  */
 int inet_csk_get_port(struct inet_hashinfo *hashinfo,
-                      struct sock *sk, unsigned short snum)
+                      struct sock *sk, unsigned short snum,
+                      int (*bind_conflict)(const struct sock *sk,
+                                           const struct inet_bind_bucket *tb))
 {
         struct inet_bind_hashbucket *head;
         struct hlist_node *node;
@@ -125,7 +130,7 @@ tb_found:
                         goto success;
                 } else {
                         ret = 1;
-                        if (inet_csk_bind_conflict(sk, tb))
+                        if (bind_conflict(sk, tb))
                                 goto fail_unlock;
                 }
         }
@@ -380,7 +385,7 @@ struct request_sock *inet_csk_search_req(const struct sock *sk,
 EXPORT_SYMBOL_GPL(inet_csk_search_req);
 
 void inet_csk_reqsk_queue_hash_add(struct sock *sk, struct request_sock *req,
-                                   const unsigned timeout)
+                                   unsigned long timeout)
 {
         struct inet_connection_sock *icsk = inet_csk(sk);
         struct listen_sock *lopt = icsk->icsk_accept_queue.listen_opt;
@@ -631,3 +636,15 @@ void inet_csk_listen_stop(struct sock *sk)
 }
 
 EXPORT_SYMBOL_GPL(inet_csk_listen_stop);
+
+void inet_csk_addr2sockaddr(struct sock *sk, struct sockaddr *uaddr)
+{
+        struct sockaddr_in *sin = (struct sockaddr_in *)uaddr;
+        const struct inet_sock *inet = inet_sk(sk);
+
+        sin->sin_family         = AF_INET;
+        sin->sin_addr.s_addr    = inet->daddr;
+        sin->sin_port           = inet->dport;
+}
+
+EXPORT_SYMBOL_GPL(inet_csk_addr2sockaddr);
diff --git a/net/ipv4/inet_diag.c b/net/ipv4/inet_diag.c
index 39061ed53cfd..c49908192047 100644
--- a/net/ipv4/inet_diag.c
+++ b/net/ipv4/inet_diag.c
@@ -112,12 +112,12 @@ static int inet_diag_fill(struct sk_buff *skb, struct sock *sk,
                 r->idiag_inode = 0;
 #if defined(CONFIG_IPV6) || defined (CONFIG_IPV6_MODULE)
                 if (r->idiag_family == AF_INET6) {
-                        const struct tcp6_timewait_sock *tcp6tw = tcp6_twsk(sk);
+                        const struct inet6_timewait_sock *tw6 = inet6_twsk(sk);
 
                         ipv6_addr_copy((struct in6_addr *)r->id.idiag_src,
-                                       &tcp6tw->tw_v6_rcv_saddr);
+                                       &tw6->tw_v6_rcv_saddr);
                         ipv6_addr_copy((struct in6_addr *)r->id.idiag_dst,
-                                       &tcp6tw->tw_v6_daddr);
+                                       &tw6->tw_v6_daddr);
                 }
 #endif
                 nlh->nlmsg_len = skb->tail - b;
@@ -489,9 +489,9 @@ static int inet_diag_fill_req(struct sk_buff *skb, struct sock *sk,
 #if defined(CONFIG_IPV6) || defined (CONFIG_IPV6_MODULE)
         if (r->idiag_family == AF_INET6) {
                 ipv6_addr_copy((struct in6_addr *)r->id.idiag_src,
-                               &tcp6_rsk(req)->loc_addr);
+                               &inet6_rsk(req)->loc_addr);
                 ipv6_addr_copy((struct in6_addr *)r->id.idiag_dst,
-                               &tcp6_rsk(req)->rmt_addr);
+                               &inet6_rsk(req)->rmt_addr);
         }
 #endif
         nlh->nlmsg_len = skb->tail - b;
@@ -553,13 +553,13 @@ static int inet_diag_dump_reqs(struct sk_buff *skb, struct sock *sk,
                                 entry.saddr =
 #if defined(CONFIG_IPV6) || defined (CONFIG_IPV6_MODULE)
                                         (entry.family == AF_INET6) ?
-                                        tcp6_rsk(req)->loc_addr.s6_addr32 :
+                                        inet6_rsk(req)->loc_addr.s6_addr32 :
 #endif
                                         &ireq->loc_addr;
                                 entry.daddr = 
 #if defined(CONFIG_IPV6) || defined (CONFIG_IPV6_MODULE)
                                         (entry.family == AF_INET6) ?
-                                        tcp6_rsk(req)->rmt_addr.s6_addr32 :
+                                        inet6_rsk(req)->rmt_addr.s6_addr32 :
 #endif
                                         &ireq->rmt_addr;
                                 entry.dport = ntohs(ireq->rmt_port);
diff --git a/net/ipv4/inet_hashtables.c b/net/ipv4/inet_hashtables.c
index e8d29fe736d2..33228115cda4 100644
--- a/net/ipv4/inet_hashtables.c
+++ b/net/ipv4/inet_hashtables.c
@@ -15,12 +15,14 @@
 
 #include <linux/config.h>
 #include <linux/module.h>
+#include <linux/random.h>
 #include <linux/sched.h>
 #include <linux/slab.h>
 #include <linux/wait.h>
 
 #include <net/inet_connection_sock.h>
 #include <net/inet_hashtables.h>
+#include <net/ip.h>
 
 /*
  * Allocate and initialize a new local port bind bucket.
@@ -163,3 +165,179 @@ struct sock *__inet_lookup_listener(const struct hlist_head *head, const u32 dad
 }
 
 EXPORT_SYMBOL_GPL(__inet_lookup_listener);
+
+/* called with local bh disabled */
+static int __inet_check_established(struct inet_timewait_death_row *death_row,
+                                    struct sock *sk, __u16 lport,
+                                    struct inet_timewait_sock **twp)
+{
+        struct inet_hashinfo *hinfo = death_row->hashinfo;
+        struct inet_sock *inet = inet_sk(sk);
+        u32 daddr = inet->rcv_saddr;
+        u32 saddr = inet->daddr;
+        int dif = sk->sk_bound_dev_if;
+        INET_ADDR_COOKIE(acookie, saddr, daddr)
+        const __u32 ports = INET_COMBINED_PORTS(inet->dport, lport);
+        unsigned int hash = inet_ehashfn(daddr, lport, saddr, inet->dport);
+        struct inet_ehash_bucket *head = inet_ehash_bucket(hinfo, hash);
+        struct sock *sk2;
+        const struct hlist_node *node;
+        struct inet_timewait_sock *tw;
+
+        prefetch(head->chain.first);
+        write_lock(&head->lock);
+
+        /* Check TIME-WAIT sockets first. */
+        sk_for_each(sk2, node, &(head + hinfo->ehash_size)->chain) {
+                tw = inet_twsk(sk2);
+
+                if (INET_TW_MATCH(sk2, hash, acookie, saddr, daddr, ports, dif)) {
+                        if (twsk_unique(sk, sk2, twp))
+                                goto unique;
+                        else
+                                goto not_unique;
+                }
+        }
+        tw = NULL;
+
+        /* And established part... */
+        sk_for_each(sk2, node, &head->chain) {
+                if (INET_MATCH(sk2, hash, acookie, saddr, daddr, ports, dif))
+                        goto not_unique;
+        }
+
+unique:
+        /* Must record num and sport now. Otherwise we will see
+         * in hash table socket with a funny identity. */
+        inet->num = lport;
+        inet->sport = htons(lport);
+        sk->sk_hash = hash;
+        BUG_TRAP(sk_unhashed(sk));
+        __sk_add_node(sk, &head->chain);
+        sock_prot_inc_use(sk->sk_prot);
+        write_unlock(&head->lock);
+
+        if (twp) {
+                *twp = tw;
+                NET_INC_STATS_BH(LINUX_MIB_TIMEWAITRECYCLED);
+        } else if (tw) {
+                /* Silly. Should hash-dance instead... */
+                inet_twsk_deschedule(tw, death_row);
+                NET_INC_STATS_BH(LINUX_MIB_TIMEWAITRECYCLED);
+
+                inet_twsk_put(tw);
+        }
+
+        return 0;
+
+not_unique:
+        write_unlock(&head->lock);
+        return -EADDRNOTAVAIL;
+}
+
+static inline u32 inet_sk_port_offset(const struct sock *sk)
+{
+        const struct inet_sock *inet = inet_sk(sk);
+        return secure_ipv4_port_ephemeral(inet->rcv_saddr, inet->daddr, 
+                                          inet->dport);
+}
+
+/*
+ * Bind a port for a connect operation and hash it.
+ */
+int inet_hash_connect(struct inet_timewait_death_row *death_row,
+                      struct sock *sk)
+{
+        struct inet_hashinfo *hinfo = death_row->hashinfo;
+        const unsigned short snum = inet_sk(sk)->num;
+        struct inet_bind_hashbucket *head;
+        struct inet_bind_bucket *tb;
+        int ret;
+
+        if (!snum) {
+                int low = sysctl_local_port_range[0];
+                int high = sysctl_local_port_range[1];
+                int range = high - low;
+                int i;
+                int port;
+                static u32 hint;
+                u32 offset = hint + inet_sk_port_offset(sk);
+                struct hlist_node *node;
+                struct inet_timewait_sock *tw = NULL;
+
+                local_bh_disable();
+                for (i = 1; i <= range; i++) {
+                        port = low + (i + offset) % range;
+                        head = &hinfo->bhash[inet_bhashfn(port, hinfo->bhash_size)];
+                        spin_lock(&head->lock);
+
+                        /* Does not bother with rcv_saddr checks,
+                         * because the established check is already
+                         * unique enough.
+                         */
+                        inet_bind_bucket_for_each(tb, node, &head->chain) {
+                                if (tb->port == port) {
+                                        BUG_TRAP(!hlist_empty(&tb->owners));
+                                        if (tb->fastreuse >= 0)
+                                                goto next_port;
+                                        if (!__inet_check_established(death_row,
+                                                                      sk, port,
+                                                                      &tw))
+                                                goto ok;
+                                        goto next_port;
+                                }
+                        }
+
+                        tb = inet_bind_bucket_create(hinfo->bind_bucket_cachep, head, port);
+                        if (!tb) {
+                                spin_unlock(&head->lock);
+                                break;
+                        }
+                        tb->fastreuse = -1;
+                        goto ok;
+
+                next_port:
+                        spin_unlock(&head->lock);
+                }
+                local_bh_enable();
+
+                return -EADDRNOTAVAIL;
+
+ok:
+                hint += i;
+
+                /* Head lock still held and bh's disabled */
+                inet_bind_hash(sk, tb, port);
+                if (sk_unhashed(sk)) {
+                        inet_sk(sk)->sport = htons(port);
+                        __inet_hash(hinfo, sk, 0);
+                }
+                spin_unlock(&head->lock);
+
+                if (tw) {
+                        inet_twsk_deschedule(tw, death_row);;
+                        inet_twsk_put(tw);
+                }
+
+                ret = 0;
+                goto out;
+        }
+
+        head = &hinfo->bhash[inet_bhashfn(snum, hinfo->bhash_size)];
+        tb  = inet_csk(sk)->icsk_bind_hash;
+        spin_lock_bh(&head->lock);
+        if (sk_head(&tb->owners) == sk && !sk->sk_bind_node.next) {
+                __inet_hash(hinfo, sk, 0);
+                spin_unlock_bh(&head->lock);
+                return 0;
+        } else {
+                spin_unlock(&head->lock);
+                /* No definite answer... Walk to established hash table */
+                ret = __inet_check_established(death_row, sk, snum, NULL);
+out:
+                local_bh_enable();
+                return ret;
+        }
+}
+
+EXPORT_SYMBOL_GPL(inet_hash_connect);
diff --git a/net/ipv4/inet_timewait_sock.c b/net/ipv4/inet_timewait_sock.c
index a010e9a68811..417f126c749e 100644
--- a/net/ipv4/inet_timewait_sock.c
+++ b/net/ipv4/inet_timewait_sock.c
@@ -90,8 +90,9 @@ EXPORT_SYMBOL_GPL(__inet_twsk_hashdance);
 
 struct inet_timewait_sock *inet_twsk_alloc(const struct sock *sk, const int state)
 {
-        struct inet_timewait_sock *tw = kmem_cache_alloc(sk->sk_prot_creator->twsk_slab,
-                                                         SLAB_ATOMIC);
+        struct inet_timewait_sock *tw =
+                kmem_cache_alloc(sk->sk_prot_creator->twsk_prot->twsk_slab,
+                                 SLAB_ATOMIC);
         if (tw != NULL) {
                 const struct inet_sock *inet = inet_sk(sk);
 
diff --git a/net/ipv4/inetpeer.c b/net/ipv4/inetpeer.c
index 2fc3fd38924f..ce5fe3f74a3d 100644
--- a/net/ipv4/inetpeer.c
+++ b/net/ipv4/inetpeer.c
@@ -401,6 +401,7 @@ struct inet_peer *inet_getpeer(__u32 daddr, int create)
                 return NULL;
         n->v4daddr = daddr;
         atomic_set(&n->refcnt, 1);
+        atomic_set(&n->rid, 0);
         n->ip_id_count = secure_ip_id(daddr);
         n->tcp_ts_stamp = 0;
 
diff --git a/net/ipv4/ip_fragment.c b/net/ipv4/ip_fragment.c
index 8ce0ce2ee48e..ce2b70ce4018 100644
--- a/net/ipv4/ip_fragment.c
+++ b/net/ipv4/ip_fragment.c
@@ -22,6 +22,7 @@
  *              Patrick McHardy :       LRU queue of frag heads for evictor.
  */
 
+#include <linux/compiler.h>
 #include <linux/config.h>
 #include <linux/module.h>
 #include <linux/types.h>
@@ -38,6 +39,7 @@
 #include <net/ip.h>
 #include <net/icmp.h>
 #include <net/checksum.h>
+#include <net/inetpeer.h>
 #include <linux/tcp.h>
 #include <linux/udp.h>
 #include <linux/inet.h>
@@ -56,6 +58,8 @@
 int sysctl_ipfrag_high_thresh = 256*1024;
 int sysctl_ipfrag_low_thresh = 192*1024;
 
+int sysctl_ipfrag_max_dist = 64;
+
 /* Important NOTE! Fragment queue must be destroyed before MSL expires.
  * RFC791 is wrong proposing to prolongate timer each fragment arrival by TTL.
  */
@@ -89,8 +93,10 @@ struct ipq {
         spinlock_t      lock;
         atomic_t        refcnt;
         struct timer_list timer;        /* when will this queue expire?         */
-        int             iif;
         struct timeval  stamp;
+        int             iif;
+        unsigned int    rid;
+        struct inet_peer *peer;
 };
 
 /* Hash table. */
@@ -195,6 +201,9 @@ static void ip_frag_destroy(struct ipq *qp, int *work)
         BUG_TRAP(qp->last_in&COMPLETE);
         BUG_TRAP(del_timer(&qp->timer) == 0);
 
+        if (qp->peer)
+                inet_putpeer(qp->peer);
+
         /* Release all fragment data. */
         fp = qp->fragments;
         while (fp) {
@@ -353,6 +362,7 @@ static struct ipq *ip_frag_create(unsigned hash, struct iphdr *iph, u32 user)
         qp->meat = 0;
         qp->fragments = NULL;
         qp->iif = 0;
+        qp->peer = sysctl_ipfrag_max_dist ? inet_getpeer(iph->saddr, 1) : NULL;
 
         /* Initialize a timer for this entry. */
         init_timer(&qp->timer);
@@ -398,6 +408,56 @@ static inline struct ipq *ip_find(struct iphdr *iph, u32 user)
         return ip_frag_create(hash, iph, user);
 }
 
+/* Is the fragment too far ahead to be part of ipq? */
+static inline int ip_frag_too_far(struct ipq *qp)
+{
+        struct inet_peer *peer = qp->peer;
+        unsigned int max = sysctl_ipfrag_max_dist;
+        unsigned int start, end;
+
+        int rc;
+
+        if (!peer || !max)
+                return 0;
+
+        start = qp->rid;
+        end = atomic_inc_return(&peer->rid);
+        qp->rid = end;
+
+        rc = qp->fragments && (end - start) > max;
+
+        if (rc) {
+                IP_INC_STATS_BH(IPSTATS_MIB_REASMFAILS);
+        }
+
+        return rc;
+}
+
+static int ip_frag_reinit(struct ipq *qp)
+{
+        struct sk_buff *fp;
+
+        if (!mod_timer(&qp->timer, jiffies + sysctl_ipfrag_time)) {
+                atomic_inc(&qp->refcnt);
+                return -ETIMEDOUT;
+        }
+
+        fp = qp->fragments;
+        do {
+                struct sk_buff *xp = fp->next;
+                frag_kfree_skb(fp, NULL);
+                fp = xp;
+        } while (fp);
+
+        qp->last_in = 0;
+        qp->len = 0;
+        qp->meat = 0;
+        qp->fragments = NULL;
+        qp->iif = 0;
+
+        return 0;
+}
+
 /* Add new segment to existing queue. */
 static void ip_frag_queue(struct ipq *qp, struct sk_buff *skb)
 {
@@ -408,6 +468,12 @@ static void ip_frag_queue(struct ipq *qp, struct sk_buff *skb)
         if (qp->last_in & COMPLETE)
                 goto err;
 
+        if (!(IPCB(skb)->flags & IPSKB_FRAG_COMPLETE) &&
+            unlikely(ip_frag_too_far(qp)) && unlikely(ip_frag_reinit(qp))) {
+                ipq_kill(qp);
+                goto err;
+        }
+
         offset = ntohs(skb->nh.iph->frag_off);
         flags = offset & ~IP_OFFSET;
         offset &= IP_OFFSET;
diff --git a/net/ipv4/ip_input.c b/net/ipv4/ip_input.c
index 473d0f2b2e0d..e45846ae570b 100644
--- a/net/ipv4/ip_input.c
+++ b/net/ipv4/ip_input.c
@@ -128,6 +128,7 @@
 #include <linux/sockios.h>
 #include <linux/in.h>
 #include <linux/inet.h>
+#include <linux/inetdevice.h>
 #include <linux/netdevice.h>
 #include <linux/etherdevice.h>
 
diff --git a/net/ipv4/ip_options.c b/net/ipv4/ip_options.c
index dbe12da8d8b3..d3f6c468faf4 100644
--- a/net/ipv4/ip_options.c
+++ b/net/ipv4/ip_options.c
@@ -22,6 +22,7 @@
 #include <net/sock.h>
 #include <net/ip.h>
 #include <net/icmp.h>
+#include <net/route.h>
 
 /* 
  * Write options to IP header, record destination address to
diff --git a/net/ipv4/ip_output.c b/net/ipv4/ip_output.c
index eba64e2bd397..2a830de3a699 100644
--- a/net/ipv4/ip_output.c
+++ b/net/ipv4/ip_output.c
@@ -445,6 +445,7 @@ int ip_fragment(struct sk_buff *skb, int (*output)(struct sk_buff*))
 
         hlen = iph->ihl * 4;
         mtu = dst_mtu(&rt->u.dst) - hlen;       /* Size of data space */
+        IPCB(skb)->flags |= IPSKB_FRAG_COMPLETE;
 
         /* When frag_list is given, use it. First, check its validity:
          * some transformers could create wrong frag_list or break existing
diff --git a/net/ipv4/ip_sockglue.c b/net/ipv4/ip_sockglue.c
index 4f2d87257309..6986e11d65cc 100644
--- a/net/ipv4/ip_sockglue.c
+++ b/net/ipv4/ip_sockglue.c
@@ -25,12 +25,12 @@
 #include <linux/skbuff.h>
 #include <linux/ip.h>
 #include <linux/icmp.h>
+#include <linux/inetdevice.h>
 #include <linux/netdevice.h>
 #include <net/sock.h>
 #include <net/ip.h>
 #include <net/icmp.h>
-#include <net/tcp.h>
-#include <linux/tcp.h>
+#include <net/tcp_states.h>
 #include <linux/udp.h>
 #include <linux/igmp.h>
 #include <linux/netfilter.h>
@@ -427,8 +427,8 @@ int ip_setsockopt(struct sock *sk, int level, int optname, char __user *optval,
                         err = ip_options_get_from_user(&opt, optval, optlen);
                         if (err)
                                 break;
-                        if (sk->sk_type == SOCK_STREAM) {
-                                struct tcp_sock *tp = tcp_sk(sk);
+                        if (inet->is_icsk) {
+                                struct inet_connection_sock *icsk = inet_csk(sk);
 #if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
                                 if (sk->sk_family == PF_INET ||
                                     (!((1 << sk->sk_state) &
@@ -436,10 +436,10 @@ int ip_setsockopt(struct sock *sk, int level, int optname, char __user *optval,
                                      inet->daddr != LOOPBACK4_IPV6)) {
 #endif
                                         if (inet->opt)
-                                                tp->ext_header_len -= inet->opt->optlen;
+                                                icsk->icsk_ext_hdr_len -= inet->opt->optlen;
                                         if (opt)
-                                                tp->ext_header_len += opt->optlen;
-                                        tcp_sync_mss(sk, tp->pmtu_cookie);
+                                                icsk->icsk_ext_hdr_len += opt->optlen;
+                                        icsk->icsk_sync_mss(sk, icsk->icsk_pmtu_cookie);
 #if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
                                 }
 #endif
diff --git a/net/ipv4/ipcomp.c b/net/ipv4/ipcomp.c
index fc718df17b40..d64e2ec8da7b 100644
--- a/net/ipv4/ipcomp.c
+++ b/net/ipv4/ipcomp.c
@@ -28,6 +28,7 @@
 #include <net/xfrm.h>
 #include <net/icmp.h>
 #include <net/ipcomp.h>
+#include <net/protocol.h>
 
 struct ipcomp_tfms {
         struct list_head list;
diff --git a/net/ipv4/ipconfig.c b/net/ipv4/ipconfig.c
index e8674baaa8d9..bb3613ec448c 100644
--- a/net/ipv4/ipconfig.c
+++ b/net/ipv4/ipconfig.c
@@ -42,6 +42,7 @@
 #include <linux/in.h>
 #include <linux/if.h>
 #include <linux/inet.h>
+#include <linux/inetdevice.h>
 #include <linux/netdevice.h>
 #include <linux/if_arp.h>
 #include <linux/skbuff.h>
@@ -58,6 +59,7 @@
 #include <net/arp.h>
 #include <net/ip.h>
 #include <net/ipconfig.h>
+#include <net/route.h>
 
 #include <asm/uaccess.h>
 #include <net/checksum.h>
diff --git a/net/ipv4/ipmr.c b/net/ipv4/ipmr.c
index 302b7eb507c9..caa3b7d2e48a 100644
--- a/net/ipv4/ipmr.c
+++ b/net/ipv4/ipmr.c
@@ -52,6 +52,7 @@
 #include <net/ip.h>
 #include <net/protocol.h>
 #include <linux/skbuff.h>
+#include <net/route.h>
 #include <net/sock.h>
 #include <net/icmp.h>
 #include <net/udp.h>
diff --git a/net/ipv4/ipvs/ip_vs_app.c b/net/ipv4/ipvs/ip_vs_app.c
index d7eb680101c2..9b176a942ac5 100644
--- a/net/ipv4/ipvs/ip_vs_app.c
+++ b/net/ipv4/ipvs/ip_vs_app.c
@@ -224,34 +224,6 @@ void unregister_ip_vs_app(struct ip_vs_app *app)
 }
 
 
-#if 0000
-/*
- *      Get reference to app by name (called from user context)
- */
-struct ip_vs_app *ip_vs_app_get_by_name(char *appname)
-{
-        struct ip_vs_app *app, *a = NULL;
-
-        down(&__ip_vs_app_mutex);
-
-        list_for_each_entry(ent, &ip_vs_app_list, a_list) {
-                if (strcmp(app->name, appname))
-                        continue;
-
-                /* softirq may call ip_vs_app_get too, so the caller
-                   must disable softirq on the current CPU */
-                if (ip_vs_app_get(app))
-                        a = app;
-                break;
-        }
-
-        up(&__ip_vs_app_mutex);
-
-        return a;
-}
-#endif
-
-
 /*
  *      Bind ip_vs_conn to its ip_vs_app (called by cp constructor)
  */
diff --git a/net/ipv4/ipvs/ip_vs_conn.c b/net/ipv4/ipvs/ip_vs_conn.c
index 2a3a8c59c655..81d90354c928 100644
--- a/net/ipv4/ipvs/ip_vs_conn.c
+++ b/net/ipv4/ipvs/ip_vs_conn.c
@@ -24,7 +24,10 @@
  *
  */
 
+#include <linux/in.h>
+#include <linux/net.h>
 #include <linux/kernel.h>
+#include <linux/module.h>
 #include <linux/vmalloc.h>
 #include <linux/proc_fs.h>              /* for proc_net_* */
 #include <linux/seq_file.h>
@@ -219,7 +222,7 @@ struct ip_vs_conn *ip_vs_conn_in_get
         if (!cp && atomic_read(&ip_vs_conn_no_cport_cnt))
                 cp = __ip_vs_conn_in_get(protocol, s_addr, 0, d_addr, d_port);
 
-        IP_VS_DBG(7, "lookup/in %s %u.%u.%u.%u:%d->%u.%u.%u.%u:%d %s\n",
+        IP_VS_DBG(9, "lookup/in %s %u.%u.%u.%u:%d->%u.%u.%u.%u:%d %s\n",
                   ip_vs_proto_name(protocol),
                   NIPQUAD(s_addr), ntohs(s_port),
                   NIPQUAD(d_addr), ntohs(d_port),
@@ -254,7 +257,7 @@ struct ip_vs_conn *ip_vs_ct_in_get
   out:
         ct_read_unlock(hash);
 
-        IP_VS_DBG(7, "template lookup/in %s %u.%u.%u.%u:%d->%u.%u.%u.%u:%d %s\n",
+        IP_VS_DBG(9, "template lookup/in %s %u.%u.%u.%u:%d->%u.%u.%u.%u:%d %s\n",
                   ip_vs_proto_name(protocol),
                   NIPQUAD(s_addr), ntohs(s_port),
                   NIPQUAD(d_addr), ntohs(d_port),
@@ -295,7 +298,7 @@ struct ip_vs_conn *ip_vs_conn_out_get
 
         ct_read_unlock(hash);
 
-        IP_VS_DBG(7, "lookup/out %s %u.%u.%u.%u:%d->%u.%u.%u.%u:%d %s\n",
+        IP_VS_DBG(9, "lookup/out %s %u.%u.%u.%u:%d->%u.%u.%u.%u:%d %s\n",
                   ip_vs_proto_name(protocol),
                   NIPQUAD(s_addr), ntohs(s_port),
                   NIPQUAD(d_addr), ntohs(d_port),
@@ -391,8 +394,9 @@ ip_vs_bind_dest(struct ip_vs_conn *cp, struct ip_vs_dest *dest)
         cp->flags |= atomic_read(&dest->conn_flags);
         cp->dest = dest;
 
-        IP_VS_DBG(9, "Bind-dest %s c:%u.%u.%u.%u:%d v:%u.%u.%u.%u:%d "
-                  "d:%u.%u.%u.%u:%d fwd:%c s:%u flg:%X cnt:%d destcnt:%d\n",
+        IP_VS_DBG(7, "Bind-dest %s c:%u.%u.%u.%u:%d v:%u.%u.%u.%u:%d "
+                  "d:%u.%u.%u.%u:%d fwd:%c s:%u conn->flags:%X conn->refcnt:%d "
+                  "dest->refcnt:%d\n",
                   ip_vs_proto_name(cp->protocol),
                   NIPQUAD(cp->caddr), ntohs(cp->cport),
                   NIPQUAD(cp->vaddr), ntohs(cp->vport),
@@ -430,8 +434,9 @@ static inline void ip_vs_unbind_dest(struct ip_vs_conn *cp)
         if (!dest)
                 return;
 
-        IP_VS_DBG(9, "Unbind-dest %s c:%u.%u.%u.%u:%d v:%u.%u.%u.%u:%d "
-                  "d:%u.%u.%u.%u:%d fwd:%c s:%u flg:%X cnt:%d destcnt:%d\n",
+        IP_VS_DBG(7, "Unbind-dest %s c:%u.%u.%u.%u:%d v:%u.%u.%u.%u:%d "
+                  "d:%u.%u.%u.%u:%d fwd:%c s:%u conn->flags:%X conn->refcnt:%d "
+                  "dest->refcnt:%d\n",
                   ip_vs_proto_name(cp->protocol),
                   NIPQUAD(cp->caddr), ntohs(cp->cport),
                   NIPQUAD(cp->vaddr), ntohs(cp->vport),
@@ -571,7 +576,7 @@ static void ip_vs_conn_expire(unsigned long data)
         ip_vs_conn_hash(cp);
 
   expire_later:
-        IP_VS_DBG(7, "delayed: refcnt-1=%d conn.n_control=%d\n",
+        IP_VS_DBG(7, "delayed: conn->refcnt-1=%d conn->n_control=%d\n",
                   atomic_read(&cp->refcnt)-1,
                   atomic_read(&cp->n_control));
 
diff --git a/net/ipv4/ipvs/ip_vs_core.c b/net/ipv4/ipvs/ip_vs_core.c
index 1a0843cd58a9..1aca94a9fd8b 100644
--- a/net/ipv4/ipvs/ip_vs_core.c
+++ b/net/ipv4/ipvs/ip_vs_core.c
@@ -426,7 +426,7 @@ ip_vs_schedule(struct ip_vs_service *svc, const struct sk_buff *skb)
                 return NULL;
 
         IP_VS_DBG(6, "Schedule fwd:%c c:%u.%u.%u.%u:%u v:%u.%u.%u.%u:%u "
-                  "d:%u.%u.%u.%u:%u flg:%X cnt:%d\n",
+                  "d:%u.%u.%u.%u:%u conn->flags:%X conn->refcnt:%d\n",
                   ip_vs_fwd_tag(cp),
                   NIPQUAD(cp->caddr), ntohs(cp->cport),
                   NIPQUAD(cp->vaddr), ntohs(cp->vport),
diff --git a/net/ipv4/ipvs/ip_vs_ctl.c b/net/ipv4/ipvs/ip_vs_ctl.c
index 9bdcf31b760e..c935c5086d33 100644
--- a/net/ipv4/ipvs/ip_vs_ctl.c
+++ b/net/ipv4/ipvs/ip_vs_ctl.c
@@ -35,6 +35,7 @@
 #include <linux/netfilter_ipv4.h>
 
 #include <net/ip.h>
+#include <net/route.h>
 #include <net/sock.h>
 
 #include <asm/uaccess.h>
@@ -447,7 +448,7 @@ ip_vs_service_get(__u32 fwmark, __u16 protocol, __u32 vaddr, __u16 vport)
   out:
         read_unlock(&__ip_vs_svc_lock);
 
-        IP_VS_DBG(6, "lookup service: fwm %u %s %u.%u.%u.%u:%u %s\n",
+        IP_VS_DBG(9, "lookup service: fwm %u %s %u.%u.%u.%u:%u %s\n",
                   fwmark, ip_vs_proto_name(protocol),
                   NIPQUAD(vaddr), ntohs(vport),
                   svc?"hit":"not hit");
@@ -597,7 +598,7 @@ ip_vs_trash_get_dest(struct ip_vs_service *svc, __u32 daddr, __u16 dport)
          */
         list_for_each_entry_safe(dest, nxt, &ip_vs_dest_trash, n_list) {
                 IP_VS_DBG(3, "Destination %u/%u.%u.%u.%u:%u still in trash, "
-                          "refcnt=%d\n",
+                          "dest->refcnt=%d\n",
                           dest->vfwmark,
                           NIPQUAD(dest->addr), ntohs(dest->port),
                           atomic_read(&dest->refcnt));
@@ -804,7 +805,7 @@ ip_vs_add_dest(struct ip_vs_service *svc, struct ip_vs_dest_user *udest)
         dest = ip_vs_trash_get_dest(svc, daddr, dport);
         if (dest != NULL) {
                 IP_VS_DBG(3, "Get destination %u.%u.%u.%u:%u from trash, "
-                          "refcnt=%d, service %u/%u.%u.%u.%u:%u\n",
+                          "dest->refcnt=%d, service %u/%u.%u.%u.%u:%u\n",
                           NIPQUAD(daddr), ntohs(dport),
                           atomic_read(&dest->refcnt),
                           dest->vfwmark,
@@ -949,7 +950,8 @@ static void __ip_vs_del_dest(struct ip_vs_dest *dest)
                 atomic_dec(&dest->svc->refcnt);
                 kfree(dest);
         } else {
-                IP_VS_DBG(3, "Moving dest %u.%u.%u.%u:%u into trash, refcnt=%d\n",
+                IP_VS_DBG(3, "Moving dest %u.%u.%u.%u:%u into trash, "
+                          "dest->refcnt=%d\n",
                           NIPQUAD(dest->addr), ntohs(dest->port),
                           atomic_read(&dest->refcnt));
                 list_add(&dest->n_list, &ip_vs_dest_trash);
diff --git a/net/ipv4/ipvs/ip_vs_dh.c b/net/ipv4/ipvs/ip_vs_dh.c
index f3bc320dce93..9fee19c4c617 100644
--- a/net/ipv4/ipvs/ip_vs_dh.c
+++ b/net/ipv4/ipvs/ip_vs_dh.c
@@ -37,8 +37,10 @@
  *
  */
 
+#include <linux/ip.h>
 #include <linux/module.h>
 #include <linux/kernel.h>
+#include <linux/skbuff.h>
 
 #include <net/ip_vs.h>
 
diff --git a/net/ipv4/ipvs/ip_vs_est.c b/net/ipv4/ipvs/ip_vs_est.c
index 67b3e2fc1fa1..e7004741ac73 100644
--- a/net/ipv4/ipvs/ip_vs_est.c
+++ b/net/ipv4/ipvs/ip_vs_est.c
@@ -13,7 +13,10 @@
  * Changes:
  *
  */
+#include <linux/config.h>
 #include <linux/kernel.h>
+#include <linux/jiffies.h>
+#include <linux/slab.h>
 #include <linux/types.h>
 
 #include <net/ip_vs.h>
diff --git a/net/ipv4/ipvs/ip_vs_lblc.c b/net/ipv4/ipvs/ip_vs_lblc.c
index 561cda326fa8..6e5cb92a5c83 100644
--- a/net/ipv4/ipvs/ip_vs_lblc.c
+++ b/net/ipv4/ipvs/ip_vs_lblc.c
@@ -41,8 +41,10 @@
  * me to write this module.
  */
 
+#include <linux/ip.h>
 #include <linux/module.h>
 #include <linux/kernel.h>
+#include <linux/skbuff.h>
 
 /* for sysctl */
 #include <linux/fs.h>
@@ -228,33 +230,6 @@ ip_vs_lblc_hash(struct ip_vs_lblc_table *tbl, struct ip_vs_lblc_entry *en)
 }
 
 
-#if 0000
-/*
- *      Unhash ip_vs_lblc_entry from ip_vs_lblc_table.
- *      returns bool success.
- */
-static int ip_vs_lblc_unhash(struct ip_vs_lblc_table *tbl,
-                             struct ip_vs_lblc_entry *en)
-{
-        if (list_empty(&en->list)) {
-                IP_VS_ERR("ip_vs_lblc_unhash(): request for not hashed entry, "
-                          "called from %p\n", __builtin_return_address(0));
-                return 0;
-        }
-
-        /*
-         * Remove it from the table
-         */
-        write_lock(&tbl->lock);
-        list_del(&en->list);
-        INIT_LIST_HEAD(&en->list);
-        write_unlock(&tbl->lock);
-
-        return 1;
-}
-#endif
-
-
 /*
  *  Get ip_vs_lblc_entry associated with supplied parameters.
  */
diff --git a/net/ipv4/ipvs/ip_vs_lblcr.c b/net/ipv4/ipvs/ip_vs_lblcr.c
index ce456dbf09a5..32ba37ba72d8 100644
--- a/net/ipv4/ipvs/ip_vs_lblcr.c
+++ b/net/ipv4/ipvs/ip_vs_lblcr.c
@@ -39,8 +39,10 @@
  *
  */
 
+#include <linux/ip.h>
 #include <linux/module.h>
 #include <linux/kernel.h>
+#include <linux/skbuff.h>
 
 /* for sysctl */
 #include <linux/fs.h>
@@ -414,33 +416,6 @@ ip_vs_lblcr_hash(struct ip_vs_lblcr_table *tbl, struct ip_vs_lblcr_entry *en)
 }
 
 
-#if 0000
-/*
- *      Unhash ip_vs_lblcr_entry from ip_vs_lblcr_table.
- *      returns bool success.
- */
-static int ip_vs_lblcr_unhash(struct ip_vs_lblcr_table *tbl,
-                             struct ip_vs_lblcr_entry *en)
-{
-        if (list_empty(&en->list)) {
-                IP_VS_ERR("ip_vs_lblcr_unhash(): request for not hashed entry, "
-                          "called from %p\n", __builtin_return_address(0));
-                return 0;
-        }
-
-        /*
-         * Remove it from the table
-         */
-        write_lock(&tbl->lock);
-        list_del(&en->list);
-        INIT_LIST_HEAD(&en->list);
-        write_unlock(&tbl->lock);
-
-        return 1;
-}
-#endif
-
-
 /*
  *  Get ip_vs_lblcr_entry associated with supplied parameters.
  */
diff --git a/net/ipv4/ipvs/ip_vs_proto_ah.c b/net/ipv4/ipvs/ip_vs_proto_ah.c
index 453e94a0bbd7..8b0505b09317 100644
--- a/net/ipv4/ipvs/ip_vs_proto_ah.c
+++ b/net/ipv4/ipvs/ip_vs_proto_ah.c
@@ -12,6 +12,8 @@
  *
  */
 
+#include <linux/in.h>
+#include <linux/ip.h>
 #include <linux/module.h>
 #include <linux/kernel.h>
 #include <linux/netfilter.h>
diff --git a/net/ipv4/ipvs/ip_vs_proto_esp.c b/net/ipv4/ipvs/ip_vs_proto_esp.c
index 478e5c7c7e8e..c36ccf057a19 100644
--- a/net/ipv4/ipvs/ip_vs_proto_esp.c
+++ b/net/ipv4/ipvs/ip_vs_proto_esp.c
@@ -12,6 +12,8 @@
  *
  */
 
+#include <linux/in.h>
+#include <linux/ip.h>
 #include <linux/module.h>
 #include <linux/kernel.h>
 #include <linux/netfilter.h>
diff --git a/net/ipv4/ipvs/ip_vs_proto_tcp.c b/net/ipv4/ipvs/ip_vs_proto_tcp.c
index 0e878fd6215c..bc28b1160a3a 100644
--- a/net/ipv4/ipvs/ip_vs_proto_tcp.c
+++ b/net/ipv4/ipvs/ip_vs_proto_tcp.c
@@ -275,28 +275,6 @@ static int tcp_timeouts[IP_VS_TCP_S_LAST+1] = {
         [IP_VS_TCP_S_LAST]              =       2*HZ,
 };
 
-
-#if 0
-
-/* FIXME: This is going to die */
-
-static int tcp_timeouts_dos[IP_VS_TCP_S_LAST+1] = {
-        [IP_VS_TCP_S_NONE]              =       2*HZ,
-        [IP_VS_TCP_S_ESTABLISHED]       =       8*60*HZ,
-        [IP_VS_TCP_S_SYN_SENT]          =       60*HZ,
-        [IP_VS_TCP_S_SYN_RECV]          =       10*HZ,
-        [IP_VS_TCP_S_FIN_WAIT]          =       60*HZ,
-        [IP_VS_TCP_S_TIME_WAIT]         =       60*HZ,
-        [IP_VS_TCP_S_CLOSE]             =       10*HZ,
-        [IP_VS_TCP_S_CLOSE_WAIT]        =       60*HZ,
-        [IP_VS_TCP_S_LAST_ACK]          =       30*HZ,
-        [IP_VS_TCP_S_LISTEN]            =       2*60*HZ,
-        [IP_VS_TCP_S_SYNACK]            =       100*HZ,
-        [IP_VS_TCP_S_LAST]              =       2*HZ,
-};
-
-#endif
-
 static char * tcp_state_name_table[IP_VS_TCP_S_LAST+1] = {
         [IP_VS_TCP_S_NONE]              =       "NONE",
         [IP_VS_TCP_S_ESTABLISHED]       =       "ESTABLISHED",
@@ -448,7 +426,7 @@ set_tcp_state(struct ip_vs_protocol *pp, struct ip_vs_conn *cp,
                 struct ip_vs_dest *dest = cp->dest;
 
                 IP_VS_DBG(8, "%s %s [%c%c%c%c] %u.%u.%u.%u:%d->"
-                          "%u.%u.%u.%u:%d state: %s->%s cnt:%d\n",
+                          "%u.%u.%u.%u:%d state: %s->%s conn->refcnt:%d\n",
                           pp->name,
                           (state_off==TCP_DIR_OUTPUT)?"output ":"input ",
                           th->syn? 'S' : '.',
diff --git a/net/ipv4/ipvs/ip_vs_proto_udp.c b/net/ipv4/ipvs/ip_vs_proto_udp.c
index 8ae5f2e0aefa..89d9175d8f28 100644
--- a/net/ipv4/ipvs/ip_vs_proto_udp.c
+++ b/net/ipv4/ipvs/ip_vs_proto_udp.c
@@ -15,8 +15,11 @@
  *
  */
 
+#include <linux/in.h>
+#include <linux/ip.h>
 #include <linux/kernel.h>
 #include <linux/netfilter_ipv4.h>
+#include <linux/udp.h>
 
 #include <net/ip_vs.h>
 
diff --git a/net/ipv4/ipvs/ip_vs_sh.c b/net/ipv4/ipvs/ip_vs_sh.c
index 6f7c50e44a39..7775e6cc68be 100644
--- a/net/ipv4/ipvs/ip_vs_sh.c
+++ b/net/ipv4/ipvs/ip_vs_sh.c
@@ -34,8 +34,10 @@
  *
  */
 
+#include <linux/ip.h>
 #include <linux/module.h>
 #include <linux/kernel.h>
+#include <linux/skbuff.h>
 
 #include <net/ip_vs.h>
 
diff --git a/net/ipv4/ipvs/ip_vs_sync.c b/net/ipv4/ipvs/ip_vs_sync.c
index 2e5ced3d8062..1bca714bda3d 100644
--- a/net/ipv4/ipvs/ip_vs_sync.c
+++ b/net/ipv4/ipvs/ip_vs_sync.c
@@ -21,12 +21,14 @@
 
 #include <linux/module.h>
 #include <linux/slab.h>
+#include <linux/inetdevice.h>
 #include <linux/net.h>
 #include <linux/completion.h>
 #include <linux/delay.h>
 #include <linux/skbuff.h>
 #include <linux/in.h>
 #include <linux/igmp.h>                 /* for ip_mc_join_group */
+#include <linux/udp.h>
 
 #include <net/ip.h>
 #include <net/sock.h>
diff --git a/net/ipv4/netfilter/arp_tables.c b/net/ipv4/netfilter/arp_tables.c
index 3c2e9639bba6..bba156304695 100644
--- a/net/ipv4/netfilter/arp_tables.c
+++ b/net/ipv4/netfilter/arp_tables.c
@@ -68,19 +68,14 @@ struct arpt_table_info {
         unsigned int initial_entries;
         unsigned int hook_entry[NF_ARP_NUMHOOKS];
         unsigned int underflow[NF_ARP_NUMHOOKS];
-        char entries[0] __attribute__((aligned(SMP_CACHE_BYTES)));
+        void *entries[NR_CPUS];
 };
 
 static LIST_HEAD(arpt_target);
 static LIST_HEAD(arpt_tables);
+#define SET_COUNTER(c,b,p) do { (c).bcnt = (b); (c).pcnt = (p); } while(0)
 #define ADD_COUNTER(c,b,p) do { (c).bcnt += (b); (c).pcnt += (p); } while(0)
 
-#ifdef CONFIG_SMP
-#define TABLE_OFFSET(t,p) (SMP_ALIGN((t)->size)*(p))
-#else
-#define TABLE_OFFSET(t,p) 0
-#endif
-
 static inline int arp_devaddr_compare(const struct arpt_devaddr_info *ap,
                                       char *hdr_addr, int len)
 {
@@ -269,9 +264,7 @@ unsigned int arpt_do_table(struct sk_buff **pskb,
         outdev = out ? out->name : nulldevname;
 
         read_lock_bh(&table->lock);
-        table_base = (void *)table->private->entries
-                + TABLE_OFFSET(table->private,
-                               smp_processor_id());
+        table_base = (void *)table->private->entries[smp_processor_id()];
         e = get_entry(table_base, table->private->hook_entry[hook]);
         back = get_entry(table_base, table->private->underflow[hook]);
 
@@ -462,7 +455,8 @@ static inline int unconditional(const struct arpt_arp *arp)
 /* Figures out from what hook each rule can be called: returns 0 if
  * there are loops.  Puts hook bitmask in comefrom.
  */
-static int mark_source_chains(struct arpt_table_info *newinfo, unsigned int valid_hooks)
+static int mark_source_chains(struct arpt_table_info *newinfo,
+                              unsigned int valid_hooks, void *entry0)
 {
         unsigned int hook;
 
@@ -472,7 +466,7 @@ static int mark_source_chains(struct arpt_table_info *newinfo, unsigned int vali
         for (hook = 0; hook < NF_ARP_NUMHOOKS; hook++) {
                 unsigned int pos = newinfo->hook_entry[hook];
                 struct arpt_entry *e
-                        = (struct arpt_entry *)(newinfo->entries + pos);
+                        = (struct arpt_entry *)(entry0 + pos);
 
                 if (!(valid_hooks & (1 << hook)))
                         continue;
@@ -514,13 +508,13 @@ static int mark_source_chains(struct arpt_table_info *newinfo, unsigned int vali
                                                 goto next;
 
                                         e = (struct arpt_entry *)
-                                                (newinfo->entries + pos);
+                                                (entry0 + pos);
                                 } while (oldpos == pos + e->next_offset);
 
                                 /* Move along one */
                                 size = e->next_offset;
                                 e = (struct arpt_entry *)
-                                        (newinfo->entries + pos + size);
+                                        (entry0 + pos + size);
                                 e->counters.pcnt = pos;
                                 pos += size;
                         } else {
@@ -537,7 +531,7 @@ static int mark_source_chains(struct arpt_table_info *newinfo, unsigned int vali
                                         newpos = pos + e->next_offset;
                                 }
                                 e = (struct arpt_entry *)
-                                        (newinfo->entries + newpos);
+                                        (entry0 + newpos);
                                 e->counters.pcnt = pos;
                                 pos = newpos;
                         }
@@ -689,6 +683,7 @@ static inline int cleanup_entry(struct arpt_entry *e, unsigned int *i)
 static int translate_table(const char *name,
                            unsigned int valid_hooks,
                            struct arpt_table_info *newinfo,
+                           void *entry0,
                            unsigned int size,
                            unsigned int number,
                            const unsigned int *hook_entries,
@@ -710,11 +705,11 @@ static int translate_table(const char *name,
         i = 0;
 
         /* Walk through entries, checking offsets. */
-        ret = ARPT_ENTRY_ITERATE(newinfo->entries, newinfo->size,
+        ret = ARPT_ENTRY_ITERATE(entry0, newinfo->size,
                                  check_entry_size_and_hooks,
                                  newinfo,
-                                 newinfo->entries,
-                                 newinfo->entries + size,
+                                 entry0,
+                                 entry0 + size,
                                  hook_entries, underflows, &i);
         duprintf("translate_table: ARPT_ENTRY_ITERATE gives %d\n", ret);
         if (ret != 0)
@@ -743,29 +738,26 @@ static int translate_table(const char *name,
                 }
         }
 
-        if (!mark_source_chains(newinfo, valid_hooks)) {
+        if (!mark_source_chains(newinfo, valid_hooks, entry0)) {
                 duprintf("Looping hook\n");
                 return -ELOOP;
         }
 
         /* Finally, each sanity check must pass */
         i = 0;
-        ret = ARPT_ENTRY_ITERATE(newinfo->entries, newinfo->size,
+        ret = ARPT_ENTRY_ITERATE(entry0, newinfo->size,
                                  check_entry, name, size, &i);
 
         if (ret != 0) {
-                ARPT_ENTRY_ITERATE(newinfo->entries, newinfo->size,
+                ARPT_ENTRY_ITERATE(entry0, newinfo->size,
                                    cleanup_entry, &i);
                 return ret;
         }
 
         /* And one copy for every other CPU */
         for_each_cpu(i) {
-                if (i == 0)
-                        continue;
-                memcpy(newinfo->entries + SMP_ALIGN(newinfo->size) * i,
-                       newinfo->entries,
-                       SMP_ALIGN(newinfo->size));
+                if (newinfo->entries[i] && newinfo->entries[i] != entry0)
+                        memcpy(newinfo->entries[i], entry0, newinfo->size);
         }
 
         return ret;
@@ -807,15 +799,42 @@ static inline int add_entry_to_counter(const struct arpt_entry *e,
         return 0;
 }
 
+static inline int set_entry_to_counter(const struct arpt_entry *e,
+                                       struct arpt_counters total[],
+                                       unsigned int *i)
+{
+        SET_COUNTER(total[*i], e->counters.bcnt, e->counters.pcnt);
+
+        (*i)++;
+        return 0;
+}
+
 static void get_counters(const struct arpt_table_info *t,
                          struct arpt_counters counters[])
 {
         unsigned int cpu;
         unsigned int i;
+        unsigned int curcpu;
+
+        /* Instead of clearing (by a previous call to memset())
+         * the counters and using adds, we set the counters
+         * with data used by 'current' CPU
+         * We dont care about preemption here.
+         */
+        curcpu = raw_smp_processor_id();
+
+        i = 0;
+        ARPT_ENTRY_ITERATE(t->entries[curcpu],
+                           t->size,
+                           set_entry_to_counter,
+                           counters,
+                           &i);
 
         for_each_cpu(cpu) {
+                if (cpu == curcpu)
+                        continue;
                 i = 0;
-                ARPT_ENTRY_ITERATE(t->entries + TABLE_OFFSET(t, cpu),
+                ARPT_ENTRY_ITERATE(t->entries[cpu],
                                    t->size,
                                    add_entry_to_counter,
                                    counters,
@@ -831,6 +850,7 @@ static int copy_entries_to_user(unsigned int total_size,
         struct arpt_entry *e;
         struct arpt_counters *counters;
         int ret = 0;
+        void *loc_cpu_entry;
 
         /* We need atomic snapshot of counters: rest doesn't change
          * (other than comefrom, which userspace doesn't care
@@ -843,13 +863,13 @@ static int copy_entries_to_user(unsigned int total_size,
                 return -ENOMEM;
 
         /* First, sum counters... */
-        memset(counters, 0, countersize);
         write_lock_bh(&table->lock);
         get_counters(table->private, counters);
         write_unlock_bh(&table->lock);
 
-        /* ... then copy entire thing from CPU 0... */
-        if (copy_to_user(userptr, table->private->entries, total_size) != 0) {
+        loc_cpu_entry = table->private->entries[raw_smp_processor_id()];
+        /* ... then copy entire thing ... */
+        if (copy_to_user(userptr, loc_cpu_entry, total_size) != 0) {
                 ret = -EFAULT;
                 goto free_counters;
         }
@@ -859,7 +879,7 @@ static int copy_entries_to_user(unsigned int total_size,
         for (off = 0, num = 0; off < total_size; off += e->next_offset, num++){
                 struct arpt_entry_target *t;
 
-                e = (struct arpt_entry *)(table->private->entries + off);
+                e = (struct arpt_entry *)(loc_cpu_entry + off);
                 if (copy_to_user(userptr + off
                                  + offsetof(struct arpt_entry, counters),
                                  &counters[num],
@@ -911,6 +931,47 @@ static int get_entries(const struct arpt_get_entries *entries,
         return ret;
 }
 
+static void free_table_info(struct arpt_table_info *info)
+{
+        int cpu;
+        for_each_cpu(cpu) {
+                if (info->size <= PAGE_SIZE)
+                        kfree(info->entries[cpu]);
+                else
+                        vfree(info->entries[cpu]);
+        }
+        kfree(info);
+}
+
+static struct arpt_table_info *alloc_table_info(unsigned int size)
+{
+        struct arpt_table_info *newinfo;
+        int cpu;
+        
+        newinfo = kzalloc(sizeof(struct arpt_table_info), GFP_KERNEL);
+        if (!newinfo)
+                return NULL;
+
+        newinfo->size = size;
+
+        for_each_cpu(cpu) {
+                if (size <= PAGE_SIZE)
+                        newinfo->entries[cpu] = kmalloc_node(size,
+                                                        GFP_KERNEL,
+                                                        cpu_to_node(cpu));
+                else
+                        newinfo->entries[cpu] = vmalloc_node(size,
+                                                             cpu_to_node(cpu));
+
+                if (newinfo->entries[cpu] == NULL) {
+                        free_table_info(newinfo);
+                        return NULL;
+                }
+        }
+
+        return newinfo;
+}
+
 static int do_replace(void __user *user, unsigned int len)
 {
         int ret;
@@ -918,6 +979,7 @@ static int do_replace(void __user *user, unsigned int len)
         struct arpt_table *t;
         struct arpt_table_info *newinfo, *oldinfo;
         struct arpt_counters *counters;
+        void *loc_cpu_entry, *loc_cpu_old_entry;
 
         if (copy_from_user(&tmp, user, sizeof(tmp)) != 0)
                 return -EFAULT;
@@ -930,13 +992,13 @@ static int do_replace(void __user *user, unsigned int len)
         if ((SMP_ALIGN(tmp.size) >> PAGE_SHIFT) + 2 > num_physpages)
                 return -ENOMEM;
 
-        newinfo = vmalloc(sizeof(struct arpt_table_info)
-                          + SMP_ALIGN(tmp.size) *
-                                        (highest_possible_processor_id()+1));
+        newinfo = alloc_table_info(tmp.size);
         if (!newinfo)
                 return -ENOMEM;
 
-        if (copy_from_user(newinfo->entries, user + sizeof(tmp),
+        /* choose the copy that is on our node/cpu */
+        loc_cpu_entry = newinfo->entries[raw_smp_processor_id()];
+        if (copy_from_user(loc_cpu_entry, user + sizeof(tmp),
                            tmp.size) != 0) {
                 ret = -EFAULT;
                 goto free_newinfo;
@@ -947,10 +1009,9 @@ static int do_replace(void __user *user, unsigned int len)
                 ret = -ENOMEM;
                 goto free_newinfo;
         }
-        memset(counters, 0, tmp.num_counters * sizeof(struct arpt_counters));
 
         ret = translate_table(tmp.name, tmp.valid_hooks,
-                              newinfo, tmp.size, tmp.num_entries,
+                              newinfo, loc_cpu_entry, tmp.size, tmp.num_entries,
                               tmp.hook_entry, tmp.underflow);
         if (ret != 0)
                 goto free_newinfo_counters;
@@ -989,8 +1050,10 @@ static int do_replace(void __user *user, unsigned int len)
         /* Get the old counters. */
         get_counters(oldinfo, counters);
         /* Decrease module usage counts and free resource */
-        ARPT_ENTRY_ITERATE(oldinfo->entries, oldinfo->size, cleanup_entry,NULL);
-        vfree(oldinfo);
+        loc_cpu_old_entry = oldinfo->entries[raw_smp_processor_id()];
+        ARPT_ENTRY_ITERATE(loc_cpu_old_entry, oldinfo->size, cleanup_entry,NULL);
+
+        free_table_info(oldinfo);
         if (copy_to_user(tmp.counters, counters,
                          sizeof(struct arpt_counters) * tmp.num_counters) != 0)
                 ret = -EFAULT;
@@ -1002,11 +1065,11 @@ static int do_replace(void __user *user, unsigned int len)
         module_put(t->me);
         up(&arpt_mutex);
  free_newinfo_counters_untrans:
-        ARPT_ENTRY_ITERATE(newinfo->entries, newinfo->size, cleanup_entry, NULL);
+        ARPT_ENTRY_ITERATE(loc_cpu_entry, newinfo->size, cleanup_entry, NULL);
  free_newinfo_counters:
         vfree(counters);
  free_newinfo:
-        vfree(newinfo);
+        free_table_info(newinfo);
         return ret;
 }
 
@@ -1030,6 +1093,7 @@ static int do_add_counters(void __user *user, unsigned int len)
         struct arpt_counters_info tmp, *paddc;
         struct arpt_table *t;
         int ret = 0;
+        void *loc_cpu_entry;
 
         if (copy_from_user(&tmp, user, sizeof(tmp)) != 0)
                 return -EFAULT;
@@ -1059,7 +1123,9 @@ static int do_add_counters(void __user *user, unsigned int len)
         }
 
         i = 0;
-        ARPT_ENTRY_ITERATE(t->private->entries,
+        /* Choose the copy that is on our node */
+        loc_cpu_entry = t->private->entries[smp_processor_id()];
+        ARPT_ENTRY_ITERATE(loc_cpu_entry,
                            t->private->size,
                            add_counter_to_entry,
                            paddc->counters,
@@ -1220,30 +1286,32 @@ int arpt_register_table(struct arpt_table *table,
         struct arpt_table_info *newinfo;
         static struct arpt_table_info bootstrap
                 = { 0, 0, 0, { 0 }, { 0 }, { } };
+        void *loc_cpu_entry;
 
-        newinfo = vmalloc(sizeof(struct arpt_table_info)
-                          + SMP_ALIGN(repl->size) *
-                                        (highest_possible_processor_id()+1));
+        newinfo = alloc_table_info(repl->size);
         if (!newinfo) {
                 ret = -ENOMEM;
                 return ret;
         }
-        memcpy(newinfo->entries, repl->entries, repl->size);
+
+        /* choose the copy on our node/cpu */
+        loc_cpu_entry = newinfo->entries[raw_smp_processor_id()];
+        memcpy(loc_cpu_entry, repl->entries, repl->size);
 
         ret = translate_table(table->name, table->valid_hooks,
-                              newinfo, repl->size,
+                              newinfo, loc_cpu_entry, repl->size,
                               repl->num_entries,
                               repl->hook_entry,
                               repl->underflow);
         duprintf("arpt_register_table: translate table gives %d\n", ret);
         if (ret != 0) {
-                vfree(newinfo);
+                free_table_info(newinfo);
                 return ret;
         }
 
         ret = down_interruptible(&arpt_mutex);
         if (ret != 0) {
-                vfree(newinfo);
+                free_table_info(newinfo);
                 return ret;
         }
 
@@ -1272,20 +1340,23 @@ int arpt_register_table(struct arpt_table *table,
         return ret;
 
  free_unlock:
-        vfree(newinfo);
+        free_table_info(newinfo);
         goto unlock;
 }
 
 void arpt_unregister_table(struct arpt_table *table)
 {
+        void *loc_cpu_entry;
+
         down(&arpt_mutex);
         LIST_DELETE(&arpt_tables, table);
         up(&arpt_mutex);
 
         /* Decrease module usage counts and free resources */
-        ARPT_ENTRY_ITERATE(table->private->entries, table->private->size,
+        loc_cpu_entry = table->private->entries[raw_smp_processor_id()];
+        ARPT_ENTRY_ITERATE(loc_cpu_entry, table->private->size,
                            cleanup_entry, NULL);
-        vfree(table->private);
+        free_table_info(table->private);
 }
 
 /* The built-in targets: standard (NULL) and error. */
diff --git a/net/ipv4/netfilter/ip_conntrack_amanda.c b/net/ipv4/netfilter/ip_conntrack_amanda.c
index e52847fa10f5..0366eedb4d70 100644
--- a/net/ipv4/netfilter/ip_conntrack_amanda.c
+++ b/net/ipv4/netfilter/ip_conntrack_amanda.c
@@ -18,11 +18,13 @@
  *
  */
 
+#include <linux/in.h>
 #include <linux/kernel.h>
 #include <linux/module.h>
 #include <linux/netfilter.h>
 #include <linux/ip.h>
 #include <linux/moduleparam.h>
+#include <linux/udp.h>
 #include <net/checksum.h>
 #include <net/udp.h>
 
diff --git a/net/ipv4/netfilter/ip_conntrack_proto_gre.c b/net/ipv4/netfilter/ip_conntrack_proto_gre.c
index 744abb9d377a..57956dee60c8 100644
--- a/net/ipv4/netfilter/ip_conntrack_proto_gre.c
+++ b/net/ipv4/netfilter/ip_conntrack_proto_gre.c
@@ -31,6 +31,7 @@
 #include <linux/ip.h>
 #include <linux/in.h>
 #include <linux/list.h>
+#include <linux/seq_file.h>
 
 static DEFINE_RWLOCK(ip_ct_gre_lock);
 #define ASSERT_READ_LOCK(x)
diff --git a/net/ipv4/netfilter/ip_conntrack_proto_udp.c b/net/ipv4/netfilter/ip_conntrack_proto_udp.c
index f2dcac7c7660..46becbe4fe58 100644
--- a/net/ipv4/netfilter/ip_conntrack_proto_udp.c
+++ b/net/ipv4/netfilter/ip_conntrack_proto_udp.c
@@ -11,6 +11,7 @@
 #include <linux/timer.h>
 #include <linux/netfilter.h>
 #include <linux/in.h>
+#include <linux/ip.h>
 #include <linux/udp.h>
 #include <linux/seq_file.h>
 #include <net/checksum.h>
diff --git a/net/ipv4/netfilter/ip_conntrack_standalone.c b/net/ipv4/netfilter/ip_conntrack_standalone.c
index dd476b191f4b..a88bcc551244 100644
--- a/net/ipv4/netfilter/ip_conntrack_standalone.c
+++ b/net/ipv4/netfilter/ip_conntrack_standalone.c
@@ -27,6 +27,7 @@
 #endif
 #include <net/checksum.h>
 #include <net/ip.h>
+#include <net/route.h>
 
 #define ASSERT_READ_LOCK(x)
 #define ASSERT_WRITE_LOCK(x)
diff --git a/net/ipv4/netfilter/ip_nat_snmp_basic.c b/net/ipv4/netfilter/ip_nat_snmp_basic.c
index 8acb7ed40b47..4f95d477805c 100644
--- a/net/ipv4/netfilter/ip_nat_snmp_basic.c
+++ b/net/ipv4/netfilter/ip_nat_snmp_basic.c
@@ -44,6 +44,7 @@
  *
  */
 #include <linux/config.h>
+#include <linux/in.h>
 #include <linux/module.h>
 #include <linux/types.h>
 #include <linux/kernel.h>
@@ -53,6 +54,7 @@
 #include <linux/netfilter_ipv4/ip_conntrack_helper.h>
 #include <linux/netfilter_ipv4/ip_nat_helper.h>
 #include <linux/ip.h>
+#include <linux/udp.h>
 #include <net/checksum.h>
 #include <net/udp.h>
 #include <asm/uaccess.h>
diff --git a/net/ipv4/netfilter/ip_tables.c b/net/ipv4/netfilter/ip_tables.c
index 45886c8475e8..2a26d167e149 100644
--- a/net/ipv4/netfilter/ip_tables.c
+++ b/net/ipv4/netfilter/ip_tables.c
@@ -83,11 +83,6 @@ static DECLARE_MUTEX(ipt_mutex);
    context stops packets coming through and allows user context to read
    the counters or update the rules.
 
-   To be cache friendly on SMP, we arrange them like so:
-   [ n-entries ]
-   ... cache-align padding ...
-   [ n-entries ]
-
    Hence the start of any table is given by get_table() below.  */
 
 /* The table itself */
@@ -105,20 +100,15 @@ struct ipt_table_info
         unsigned int underflow[NF_IP_NUMHOOKS];
 
         /* ipt_entry tables: one per CPU */
-        char entries[0] ____cacheline_aligned;
+        void *entries[NR_CPUS];
 };
 
 static LIST_HEAD(ipt_target);
 static LIST_HEAD(ipt_match);
 static LIST_HEAD(ipt_tables);
+#define SET_COUNTER(c,b,p) do { (c).bcnt = (b); (c).pcnt = (p); } while(0)
 #define ADD_COUNTER(c,b,p) do { (c).bcnt += (b); (c).pcnt += (p); } while(0)
 
-#ifdef CONFIG_SMP
-#define TABLE_OFFSET(t,p) (SMP_ALIGN((t)->size)*(p))
-#else
-#define TABLE_OFFSET(t,p) 0
-#endif
-
 #if 0
 #define down(x) do { printk("DOWN:%u:" #x "\n", __LINE__); down(x); } while(0)
 #define down_interruptible(x) ({ int __r; printk("DOWNi:%u:" #x "\n", __LINE__); __r = down_interruptible(x); if (__r != 0) printk("ABORT-DOWNi:%u\n", __LINE__); __r; })
@@ -290,8 +280,7 @@ ipt_do_table(struct sk_buff **pskb,
 
         read_lock_bh(&table->lock);
         IP_NF_ASSERT(table->valid_hooks & (1 << hook));
-        table_base = (void *)table->private->entries
-                + TABLE_OFFSET(table->private, smp_processor_id());
+        table_base = (void *)table->private->entries[smp_processor_id()];
         e = get_entry(table_base, table->private->hook_entry[hook]);
 
 #ifdef CONFIG_NETFILTER_DEBUG
@@ -563,7 +552,8 @@ unconditional(const struct ipt_ip *ip)
 /* Figures out from what hook each rule can be called: returns 0 if
    there are loops.  Puts hook bitmask in comefrom. */
 static int
-mark_source_chains(struct ipt_table_info *newinfo, unsigned int valid_hooks)
+mark_source_chains(struct ipt_table_info *newinfo,
+                   unsigned int valid_hooks, void *entry0)
 {
         unsigned int hook;
 
@@ -572,7 +562,7 @@ mark_source_chains(struct ipt_table_info *newinfo, unsigned int valid_hooks)
         for (hook = 0; hook < NF_IP_NUMHOOKS; hook++) {
                 unsigned int pos = newinfo->hook_entry[hook];
                 struct ipt_entry *e
-                        = (struct ipt_entry *)(newinfo->entries + pos);
+                        = (struct ipt_entry *)(entry0 + pos);
 
                 if (!(valid_hooks & (1 << hook)))
                         continue;
@@ -622,13 +612,13 @@ mark_source_chains(struct ipt_table_info *newinfo, unsigned int valid_hooks)
                                                 goto next;
 
                                         e = (struct ipt_entry *)
-                                                (newinfo->entries + pos);
+                                                (entry0 + pos);
                                 } while (oldpos == pos + e->next_offset);
 
                                 /* Move along one */
                                 size = e->next_offset;
                                 e = (struct ipt_entry *)
-                                        (newinfo->entries + pos + size);
+                                        (entry0 + pos + size);
                                 e->counters.pcnt = pos;
                                 pos += size;
                         } else {
@@ -645,7 +635,7 @@ mark_source_chains(struct ipt_table_info *newinfo, unsigned int valid_hooks)
                                         newpos = pos + e->next_offset;
                                 }
                                 e = (struct ipt_entry *)
-                                        (newinfo->entries + newpos);
+                                        (entry0 + newpos);
                                 e->counters.pcnt = pos;
                                 pos = newpos;
                         }
@@ -855,6 +845,7 @@ static int
 translate_table(const char *name,
                 unsigned int valid_hooks,
                 struct ipt_table_info *newinfo,
+                void *entry0,
                 unsigned int size,
                 unsigned int number,
                 const unsigned int *hook_entries,
@@ -875,11 +866,11 @@ translate_table(const char *name,
         duprintf("translate_table: size %u\n", newinfo->size);
         i = 0;
         /* Walk through entries, checking offsets. */
-        ret = IPT_ENTRY_ITERATE(newinfo->entries, newinfo->size,
+        ret = IPT_ENTRY_ITERATE(entry0, newinfo->size,
                                 check_entry_size_and_hooks,
                                 newinfo,
-                                newinfo->entries,
-                                newinfo->entries + size,
+                                entry0,
+                                entry0 + size,
                                 hook_entries, underflows, &i);
         if (ret != 0)
                 return ret;
@@ -907,27 +898,24 @@ translate_table(const char *name,
                 }
         }
 
-        if (!mark_source_chains(newinfo, valid_hooks))
+        if (!mark_source_chains(newinfo, valid_hooks, entry0))
                 return -ELOOP;
 
         /* Finally, each sanity check must pass */
         i = 0;
-        ret = IPT_ENTRY_ITERATE(newinfo->entries, newinfo->size,
+        ret = IPT_ENTRY_ITERATE(entry0, newinfo->size,
                                 check_entry, name, size, &i);
 
         if (ret != 0) {
-                IPT_ENTRY_ITERATE(newinfo->entries, newinfo->size,
+                IPT_ENTRY_ITERATE(entry0, newinfo->size,
                                   cleanup_entry, &i);
                 return ret;
         }
 
         /* And one copy for every other CPU */
         for_each_cpu(i) {
-                if (i == 0)
-                        continue;
-                memcpy(newinfo->entries + SMP_ALIGN(newinfo->size) * i,
-                       newinfo->entries,
-                       SMP_ALIGN(newinfo->size));
+                if (newinfo->entries[i] && newinfo->entries[i] != entry0)
+                        memcpy(newinfo->entries[i], entry0, newinfo->size);
         }
 
         return ret;
@@ -943,15 +931,12 @@ replace_table(struct ipt_table *table,
 
 #ifdef CONFIG_NETFILTER_DEBUG
         {
-                struct ipt_entry *table_base;
-                unsigned int i;
+                int cpu;
 
-                for_each_cpu(i) {
-                        table_base =
-                                (void *)newinfo->entries
-                                + TABLE_OFFSET(newinfo, i);
-
-                        table_base->comefrom = 0xdead57ac;
+                for_each_cpu(cpu) {
+                        struct ipt_entry *table_base = newinfo->entries[cpu];
+                        if (table_base)
+                                table_base->comefrom = 0xdead57ac;
                 }
         }
 #endif
@@ -986,16 +971,44 @@ add_entry_to_counter(const struct ipt_entry *e,
         return 0;
 }
 
+static inline int
+set_entry_to_counter(const struct ipt_entry *e,
+                     struct ipt_counters total[],
+                     unsigned int *i)
+{
+        SET_COUNTER(total[*i], e->counters.bcnt, e->counters.pcnt);
+
+        (*i)++;
+        return 0;
+}
+
 static void
 get_counters(const struct ipt_table_info *t,
              struct ipt_counters counters[])
 {
         unsigned int cpu;
         unsigned int i;
+        unsigned int curcpu;
+
+        /* Instead of clearing (by a previous call to memset())
+         * the counters and using adds, we set the counters
+         * with data used by 'current' CPU
+         * We dont care about preemption here.
+         */
+        curcpu = raw_smp_processor_id();
+
+        i = 0;
+        IPT_ENTRY_ITERATE(t->entries[curcpu],
+                          t->size,
+                          set_entry_to_counter,
+                          counters,
+                          &i);
 
         for_each_cpu(cpu) {
+                if (cpu == curcpu)
+                        continue;
                 i = 0;
-                IPT_ENTRY_ITERATE(t->entries + TABLE_OFFSET(t, cpu),
+                IPT_ENTRY_ITERATE(t->entries[cpu],
                                   t->size,
                                   add_entry_to_counter,
                                   counters,
@@ -1012,24 +1025,29 @@ copy_entries_to_user(unsigned int total_size,
         struct ipt_entry *e;
         struct ipt_counters *counters;
         int ret = 0;
+        void *loc_cpu_entry;
 
         /* We need atomic snapshot of counters: rest doesn't change
            (other than comefrom, which userspace doesn't care
            about). */
         countersize = sizeof(struct ipt_counters) * table->private->number;
-        counters = vmalloc(countersize);
+        counters = vmalloc_node(countersize, numa_node_id());
 
         if (counters == NULL)
                 return -ENOMEM;
 
         /* First, sum counters... */
-        memset(counters, 0, countersize);
         write_lock_bh(&table->lock);
         get_counters(table->private, counters);
         write_unlock_bh(&table->lock);
 
-        /* ... then copy entire thing from CPU 0... */
-        if (copy_to_user(userptr, table->private->entries, total_size) != 0) {
+        /* choose the copy that is on our node/cpu, ...
+         * This choice is lazy (because current thread is
+         * allowed to migrate to another cpu)
+         */
+        loc_cpu_entry = table->private->entries[raw_smp_processor_id()];
+        /* ... then copy entire thing ... */
+        if (copy_to_user(userptr, loc_cpu_entry, total_size) != 0) {
                 ret = -EFAULT;
                 goto free_counters;
         }
@@ -1041,7 +1059,7 @@ copy_entries_to_user(unsigned int total_size,
                 struct ipt_entry_match *m;
                 struct ipt_entry_target *t;
 
-                e = (struct ipt_entry *)(table->private->entries + off);
+                e = (struct ipt_entry *)(loc_cpu_entry + off);
                 if (copy_to_user(userptr + off
                                  + offsetof(struct ipt_entry, counters),
                                  &counters[num],
@@ -1110,6 +1128,45 @@ get_entries(const struct ipt_get_entries *entries,
         return ret;
 }
 
+static void free_table_info(struct ipt_table_info *info)
+{
+        int cpu;
+        for_each_cpu(cpu) {
+                if (info->size <= PAGE_SIZE)
+                        kfree(info->entries[cpu]);
+                else
+                        vfree(info->entries[cpu]);
+        }
+        kfree(info);
+}
+
+static struct ipt_table_info *alloc_table_info(unsigned int size)
+{
+        struct ipt_table_info *newinfo;
+        int cpu;
+
+        newinfo = kzalloc(sizeof(struct ipt_table_info), GFP_KERNEL);
+        if (!newinfo)
+                return NULL;
+
+        newinfo->size = size;
+
+        for_each_cpu(cpu) {
+                if (size <= PAGE_SIZE)
+                        newinfo->entries[cpu] = kmalloc_node(size,
+                                GFP_KERNEL,
+                                cpu_to_node(cpu));
+                else
+                        newinfo->entries[cpu] = vmalloc_node(size, cpu_to_node(cpu));
+                if (newinfo->entries[cpu] == 0) {
+                        free_table_info(newinfo);
+                        return NULL;
+                }
+        }
+
+        return newinfo;
+}
+
 static int
 do_replace(void __user *user, unsigned int len)
 {
@@ -1118,6 +1175,7 @@ do_replace(void __user *user, unsigned int len)
         struct ipt_table *t;
         struct ipt_table_info *newinfo, *oldinfo;
         struct ipt_counters *counters;
+        void *loc_cpu_entry, *loc_cpu_old_entry;
 
         if (copy_from_user(&tmp, user, sizeof(tmp)) != 0)
                 return -EFAULT;
@@ -1130,13 +1188,13 @@ do_replace(void __user *user, unsigned int len)
         if ((SMP_ALIGN(tmp.size) >> PAGE_SHIFT) + 2 > num_physpages)
                 return -ENOMEM;
 
-        newinfo = vmalloc(sizeof(struct ipt_table_info)
-                          + SMP_ALIGN(tmp.size) * 
-                                (highest_possible_processor_id()+1));
+        newinfo = alloc_table_info(tmp.size);
         if (!newinfo)
                 return -ENOMEM;
 
-        if (copy_from_user(newinfo->entries, user + sizeof(tmp),
+        /* choose the copy that is our node/cpu */
+        loc_cpu_entry = newinfo->entries[raw_smp_processor_id()];
+        if (copy_from_user(loc_cpu_entry, user + sizeof(tmp),
                            tmp.size) != 0) {
                 ret = -EFAULT;
                 goto free_newinfo;
@@ -1147,10 +1205,9 @@ do_replace(void __user *user, unsigned int len)
                 ret = -ENOMEM;
                 goto free_newinfo;
         }
-        memset(counters, 0, tmp.num_counters * sizeof(struct ipt_counters));
 
         ret = translate_table(tmp.name, tmp.valid_hooks,
-                              newinfo, tmp.size, tmp.num_entries,
+                              newinfo, loc_cpu_entry, tmp.size, tmp.num_entries,
                               tmp.hook_entry, tmp.underflow);
         if (ret != 0)
                 goto free_newinfo_counters;
@@ -1189,8 +1246,9 @@ do_replace(void __user *user, unsigned int len)
         /* Get the old counters. */
         get_counters(oldinfo, counters);
         /* Decrease module usage counts and free resource */
-        IPT_ENTRY_ITERATE(oldinfo->entries, oldinfo->size, cleanup_entry,NULL);
-        vfree(oldinfo);
+        loc_cpu_old_entry = oldinfo->entries[raw_smp_processor_id()];
+        IPT_ENTRY_ITERATE(loc_cpu_old_entry, oldinfo->size, cleanup_entry,NULL);
+        free_table_info(oldinfo);
         if (copy_to_user(tmp.counters, counters,
                          sizeof(struct ipt_counters) * tmp.num_counters) != 0)
                 ret = -EFAULT;
@@ -1202,11 +1260,11 @@ do_replace(void __user *user, unsigned int len)
         module_put(t->me);
         up(&ipt_mutex);
  free_newinfo_counters_untrans:
-        IPT_ENTRY_ITERATE(newinfo->entries, newinfo->size, cleanup_entry,NULL);
+        IPT_ENTRY_ITERATE(loc_cpu_entry, newinfo->size, cleanup_entry,NULL);
  free_newinfo_counters:
         vfree(counters);
  free_newinfo:
-        vfree(newinfo);
+        free_table_info(newinfo);
         return ret;
 }
 
@@ -1239,6 +1297,7 @@ do_add_counters(void __user *user, unsigned int len)
         struct ipt_counters_info tmp, *paddc;
         struct ipt_table *t;
         int ret = 0;
+        void *loc_cpu_entry;
 
         if (copy_from_user(&tmp, user, sizeof(tmp)) != 0)
                 return -EFAULT;
@@ -1246,7 +1305,7 @@ do_add_counters(void __user *user, unsigned int len)
         if (len != sizeof(tmp) + tmp.num_counters*sizeof(struct ipt_counters))
                 return -EINVAL;
 
-        paddc = vmalloc(len);
+        paddc = vmalloc_node(len, numa_node_id());
         if (!paddc)
                 return -ENOMEM;
 
@@ -1268,7 +1327,9 @@ do_add_counters(void __user *user, unsigned int len)
         }
 
         i = 0;
-        IPT_ENTRY_ITERATE(t->private->entries,
+        /* Choose the copy that is on our node */
+        loc_cpu_entry = t->private->entries[raw_smp_processor_id()];
+        IPT_ENTRY_ITERATE(loc_cpu_entry,
                           t->private->size,
                           add_counter_to_entry,
                           paddc->counters,
@@ -1460,28 +1521,31 @@ int ipt_register_table(struct ipt_table *table, const struct ipt_replace *repl)
         struct ipt_table_info *newinfo;
         static struct ipt_table_info bootstrap
                 = { 0, 0, 0, { 0 }, { 0 }, { } };
+        void *loc_cpu_entry;
 
-        newinfo = vmalloc(sizeof(struct ipt_table_info)
-                          + SMP_ALIGN(repl->size) * 
-                                        (highest_possible_processor_id()+1));
+        newinfo = alloc_table_info(repl->size);
         if (!newinfo)
                 return -ENOMEM;
 
-        memcpy(newinfo->entries, repl->entries, repl->size);
+        /* choose the copy on our node/cpu
+         * but dont care of preemption
+         */
+        loc_cpu_entry = newinfo->entries[raw_smp_processor_id()];
+        memcpy(loc_cpu_entry, repl->entries, repl->size);
 
         ret = translate_table(table->name, table->valid_hooks,
-                              newinfo, repl->size,
+                              newinfo, loc_cpu_entry, repl->size,
                               repl->num_entries,
                               repl->hook_entry,
                               repl->underflow);
         if (ret != 0) {
-                vfree(newinfo);
+                free_table_info(newinfo);
                 return ret;
         }
 
         ret = down_interruptible(&ipt_mutex);
         if (ret != 0) {
-                vfree(newinfo);
+                free_table_info(newinfo);
                 return ret;
         }
 
@@ -1510,20 +1574,23 @@ int ipt_register_table(struct ipt_table *table, const struct ipt_replace *repl)
         return ret;
 
  free_unlock:
-        vfree(newinfo);
+        free_table_info(newinfo);
         goto unlock;
 }
 
 void ipt_unregister_table(struct ipt_table *table)
 {
+        void *loc_cpu_entry;
+
         down(&ipt_mutex);
         LIST_DELETE(&ipt_tables, table);
         up(&ipt_mutex);
 
         /* Decrease module usage counts and free resources */
-        IPT_ENTRY_ITERATE(table->private->entries, table->private->size,
+        loc_cpu_entry = table->private->entries[raw_smp_processor_id()];
+        IPT_ENTRY_ITERATE(loc_cpu_entry, table->private->size,
                           cleanup_entry, NULL);
-        vfree(table->private);
+        free_table_info(table->private);
 }
 
 /* Returns 1 if the port is matched by the range, 0 otherwise */
diff --git a/net/ipv4/netfilter/ipt_MASQUERADE.c b/net/ipv4/netfilter/ipt_MASQUERADE.c
index 275a174c6fe6..27860510ca6d 100644
--- a/net/ipv4/netfilter/ipt_MASQUERADE.c
+++ b/net/ipv4/netfilter/ipt_MASQUERADE.c
@@ -11,6 +11,7 @@
 
 #include <linux/config.h>
 #include <linux/types.h>
+#include <linux/inetdevice.h>
 #include <linux/ip.h>
 #include <linux/timer.h>
 #include <linux/module.h>
@@ -18,6 +19,7 @@
 #include <net/protocol.h>
 #include <net/ip.h>
 #include <net/checksum.h>
+#include <net/route.h>
 #include <linux/netfilter_ipv4.h>
 #include <linux/netfilter_ipv4/ip_nat_rule.h>
 #include <linux/netfilter_ipv4/ip_tables.h>
diff --git a/net/ipv4/netfilter/ipt_physdev.c b/net/ipv4/netfilter/ipt_physdev.c
index 1a53924041fc..03f554857a4d 100644
--- a/net/ipv4/netfilter/ipt_physdev.c
+++ b/net/ipv4/netfilter/ipt_physdev.c
@@ -9,6 +9,7 @@
  */
 
 #include <linux/module.h>
+#include <linux/netdevice.h>
 #include <linux/skbuff.h>
 #include <linux/netfilter_ipv4/ipt_physdev.h>
 #include <linux/netfilter_ipv4/ip_tables.h>
diff --git a/net/ipv4/proc.c b/net/ipv4/proc.c
index 0d7dc668db46..39d49dc333a7 100644
--- a/net/ipv4/proc.c
+++ b/net/ipv4/proc.c
@@ -38,6 +38,7 @@
 #include <net/protocol.h>
 #include <net/tcp.h>
 #include <net/udp.h>
+#include <linux/inetdevice.h>
 #include <linux/proc_fs.h>
 #include <linux/seq_file.h>
 #include <net/sock.h>
diff --git a/net/ipv4/syncookies.c b/net/ipv4/syncookies.c
index a34e60ea48a1..e20be3331f67 100644
--- a/net/ipv4/syncookies.c
+++ b/net/ipv4/syncookies.c
@@ -173,10 +173,10 @@ static inline struct sock *get_cookie_sock(struct sock *sk, struct sk_buff *skb,
                                            struct request_sock *req,
                                            struct dst_entry *dst)
 {
-        struct tcp_sock *tp = tcp_sk(sk);
+        struct inet_connection_sock *icsk = inet_csk(sk);
         struct sock *child;
 
-        child = tp->af_specific->syn_recv_sock(sk, skb, req, dst);
+        child = icsk->icsk_af_ops->syn_recv_sock(sk, skb, req, dst);
         if (child)
                 inet_csk_reqsk_queue_add(sk, req, child);
         else
diff --git a/net/ipv4/sysctl_net_ipv4.c b/net/ipv4/sysctl_net_ipv4.c
index 01444a02b48b..16984d4a8a06 100644
--- a/net/ipv4/sysctl_net_ipv4.c
+++ b/net/ipv4/sysctl_net_ipv4.c
@@ -12,6 +12,7 @@
 #include <linux/sysctl.h>
 #include <linux/config.h>
 #include <linux/igmp.h>
+#include <linux/inetdevice.h>
 #include <net/snmp.h>
 #include <net/icmp.h>
 #include <net/ip.h>
@@ -22,6 +23,7 @@
 extern int sysctl_ip_nonlocal_bind;
 
 #ifdef CONFIG_SYSCTL
+static int zero;
 static int tcp_retr1_max = 255; 
 static int ip_local_port_range_min[] = { 1, 1 };
 static int ip_local_port_range_max[] = { 65535, 65535 };
@@ -614,6 +616,15 @@ ctl_table ipv4_table[] = {
                 .strategy       = &sysctl_jiffies
         },
         {
+                .ctl_name       = NET_IPV4_IPFRAG_MAX_DIST,
+                .procname       = "ipfrag_max_dist",
+                .data           = &sysctl_ipfrag_max_dist,
+                .maxlen         = sizeof(int),
+                .mode           = 0644,
+                .proc_handler   = &proc_dointvec_minmax,
+                .extra1         = &zero
+        },
+        {
                 .ctl_name       = NET_TCP_NO_METRICS_SAVE,
                 .procname       = "tcp_no_metrics_save",
                 .data           = &sysctl_tcp_nometrics_save,
diff --git a/net/ipv4/tcp.c b/net/ipv4/tcp.c
index ef98b14ac56d..00aa80e93243 100644
--- a/net/ipv4/tcp.c
+++ b/net/ipv4/tcp.c
@@ -1696,8 +1696,8 @@ int tcp_setsockopt(struct sock *sk, int level, int optname, char __user *optval,
         int err = 0;
 
         if (level != SOL_TCP)
-                return tp->af_specific->setsockopt(sk, level, optname,
-                                                   optval, optlen);
+                return icsk->icsk_af_ops->setsockopt(sk, level, optname,
+                                                     optval, optlen);
 
         /* This is a string value all the others are int's */
         if (optname == TCP_CONGESTION) {
@@ -1914,7 +1914,7 @@ void tcp_get_info(struct sock *sk, struct tcp_info *info)
         info->tcpi_last_data_recv = jiffies_to_msecs(now - icsk->icsk_ack.lrcvtime);
         info->tcpi_last_ack_recv = jiffies_to_msecs(now - tp->rcv_tstamp);
 
-        info->tcpi_pmtu = tp->pmtu_cookie;
+        info->tcpi_pmtu = icsk->icsk_pmtu_cookie;
         info->tcpi_rcv_ssthresh = tp->rcv_ssthresh;
         info->tcpi_rtt = jiffies_to_usecs(tp->srtt)>>3;
         info->tcpi_rttvar = jiffies_to_usecs(tp->mdev)>>2;
@@ -1939,8 +1939,8 @@ int tcp_getsockopt(struct sock *sk, int level, int optname, char __user *optval,
         int val, len;
 
         if (level != SOL_TCP)
-                return tp->af_specific->getsockopt(sk, level, optname,
-                                                   optval, optlen);
+                return icsk->icsk_af_ops->getsockopt(sk, level, optname,
+                                                     optval, optlen);
 
         if (get_user(len, optlen))
                 return -EFAULT;
diff --git a/net/ipv4/tcp_bic.c b/net/ipv4/tcp_bic.c
index 1d0cd86621b1..035f2092d73a 100644
--- a/net/ipv4/tcp_bic.c
+++ b/net/ipv4/tcp_bic.c
@@ -30,8 +30,6 @@ static int fast_convergence = 1;
 static int max_increment = 16;
 static int low_window = 14;
 static int beta = 819;          /* = 819/1024 (BICTCP_BETA_SCALE) */
-static int low_utilization_threshold = 153;
-static int low_utilization_period = 2;
 static int initial_ssthresh = 100;
 static int smooth_part = 20;
 
@@ -43,10 +41,6 @@ module_param(low_window, int, 0644);
 MODULE_PARM_DESC(low_window, "lower bound on congestion window (for TCP friendliness)");
 module_param(beta, int, 0644);
 MODULE_PARM_DESC(beta, "beta for multiplicative increase");
-module_param(low_utilization_threshold, int, 0644);
-MODULE_PARM_DESC(low_utilization_threshold, "percent (scaled by 1024) for low utilization mode");
-module_param(low_utilization_period, int, 0644);
-MODULE_PARM_DESC(low_utilization_period, "if average delay exceeds then goto to low utilization mode (seconds)");
 module_param(initial_ssthresh, int, 0644);
 MODULE_PARM_DESC(initial_ssthresh, "initial value of slow start threshold");
 module_param(smooth_part, int, 0644);
@@ -60,11 +54,6 @@ struct bictcp {
         u32     loss_cwnd;      /* congestion window at last loss */
         u32     last_cwnd;      /* the last snd_cwnd */
         u32     last_time;      /* time when updated last_cwnd */
-        u32     delay_min;      /* min delay */
-        u32     delay_max;      /* max delay */
-        u32     last_delay;
-        u8      low_utilization;/* 0: high; 1: low */
-        u32     low_utilization_start;  /* starting time of low utilization detection*/
         u32     epoch_start;    /* beginning of an epoch */
 #define ACK_RATIO_SHIFT 4
         u32     delayed_ack;    /* estimate the ratio of Packets/ACKs << 4 */
@@ -77,11 +66,6 @@ static inline void bictcp_reset(struct bictcp *ca)
         ca->loss_cwnd = 0;
         ca->last_cwnd = 0;
         ca->last_time = 0;
-        ca->delay_min = 0;
-        ca->delay_max = 0;
-        ca->last_delay = 0;
-        ca->low_utilization = 0;
-        ca->low_utilization_start = 0;
         ca->epoch_start = 0;
         ca->delayed_ack = 2 << ACK_RATIO_SHIFT;
 }
@@ -143,8 +127,7 @@ static inline void bictcp_update(struct bictcp *ca, u32 cwnd)
         }
 
         /* if in slow start or link utilization is very low */
-        if ( ca->loss_cwnd == 0 ||
-             (cwnd > ca->loss_cwnd && ca->low_utilization)) {
+        if (ca->loss_cwnd == 0) {
                 if (ca->cnt > 20) /* increase cwnd 5% per RTT */
                         ca->cnt = 20;
         }
@@ -154,69 +137,12 @@ static inline void bictcp_update(struct bictcp *ca, u32 cwnd)
                 ca->cnt = 1;
 }
 
-
-/* Detect low utilization in congestion avoidance */
-static inline void bictcp_low_utilization(struct sock *sk, int flag)
-{
-        const struct tcp_sock *tp = tcp_sk(sk);
-        struct bictcp *ca = inet_csk_ca(sk);
-        u32 dist, delay;
-
-        /* No time stamp */
-        if (!(tp->rx_opt.saw_tstamp && tp->rx_opt.rcv_tsecr) ||
-             /* Discard delay samples right after fast recovery */
-             tcp_time_stamp < ca->epoch_start + HZ ||
-             /* this delay samples may not be accurate */
-             flag == 0) {
-                ca->last_delay = 0;
-                goto notlow;
-        }
-
-        delay = ca->last_delay<<3;      /* use the same scale as tp->srtt*/
-        ca->last_delay = tcp_time_stamp - tp->rx_opt.rcv_tsecr;
-        if (delay == 0)                 /* no previous delay sample */
-                goto notlow;
-
-        /* first time call or link delay decreases */
-        if (ca->delay_min == 0 || ca->delay_min > delay) {
-                ca->delay_min = ca->delay_max = delay;
-                goto notlow;
-        }
-
-        if (ca->delay_max < delay)
-                ca->delay_max = delay;
-
-        /* utilization is low, if avg delay < dist*threshold
-           for checking_period time */
-        dist = ca->delay_max - ca->delay_min;
-        if (dist <= ca->delay_min>>6 ||
-            tp->srtt - ca->delay_min >=  (dist*low_utilization_threshold)>>10)
-                goto notlow;
-
-        if (ca->low_utilization_start == 0) {
-                ca->low_utilization = 0;
-                ca->low_utilization_start = tcp_time_stamp;
-        } else if ((s32)(tcp_time_stamp - ca->low_utilization_start)
-                        > low_utilization_period*HZ) {
-                ca->low_utilization = 1;
-        }
-
-        return;
-
- notlow:
-        ca->low_utilization = 0;
-        ca->low_utilization_start = 0;
-
-}
-
 static void bictcp_cong_avoid(struct sock *sk, u32 ack,
                               u32 seq_rtt, u32 in_flight, int data_acked)
 {
         struct tcp_sock *tp = tcp_sk(sk);
         struct bictcp *ca = inet_csk_ca(sk);
 
-        bictcp_low_utilization(sk, data_acked);
-
         if (!tcp_is_cwnd_limited(sk, in_flight))
                 return;
 
@@ -249,11 +175,6 @@ static u32 bictcp_recalc_ssthresh(struct sock *sk)
 
         ca->epoch_start = 0;    /* end of epoch */
 
-        /* in case of wrong delay_max*/
-        if (ca->delay_min > 0 && ca->delay_max > ca->delay_min)
-                ca->delay_max = ca->delay_min
-                        + ((ca->delay_max - ca->delay_min)* 90) / 100;
-
         /* Wmax and fast convergence */
         if (tp->snd_cwnd < ca->last_max_cwnd && fast_convergence)
                 ca->last_max_cwnd = (tp->snd_cwnd * (BICTCP_BETA_SCALE + beta))
@@ -289,14 +210,14 @@ static void bictcp_state(struct sock *sk, u8 new_state)
                 bictcp_reset(inet_csk_ca(sk));
 }
 
-/* Track delayed acknowledgement ratio using sliding window
+/* Track delayed acknowledgment ratio using sliding window
  * ratio = (15*ratio + sample) / 16
  */
 static void bictcp_acked(struct sock *sk, u32 cnt)
 {
         const struct inet_connection_sock *icsk = inet_csk(sk);
 
-        if (cnt > 0 &&  icsk->icsk_ca_state == TCP_CA_Open) {
+        if (cnt > 0 && icsk->icsk_ca_state == TCP_CA_Open) {
                 struct bictcp *ca = inet_csk_ca(sk);
                 cnt -= ca->delayed_ack >> ACK_RATIO_SHIFT;
                 ca->delayed_ack += cnt;
diff --git a/net/ipv4/tcp_cong.c b/net/ipv4/tcp_cong.c
index c7cc62c8dc12..e688c687d62d 100644
--- a/net/ipv4/tcp_cong.c
+++ b/net/ipv4/tcp_cong.c
@@ -174,6 +174,34 @@ int tcp_set_congestion_control(struct sock *sk, const char *name)
         return err;
 }
 
+
+/*
+ * Linear increase during slow start
+ */
+void tcp_slow_start(struct tcp_sock *tp)
+{
+        if (sysctl_tcp_abc) {
+                /* RFC3465: Slow Start
+                 * TCP sender SHOULD increase cwnd by the number of
+                 * previously unacknowledged bytes ACKed by each incoming
+                 * acknowledgment, provided the increase is not more than L
+                 */
+                if (tp->bytes_acked < tp->mss_cache)
+                        return;
+
+                /* We MAY increase by 2 if discovered delayed ack */
+                if (sysctl_tcp_abc > 1 && tp->bytes_acked > 2*tp->mss_cache) {
+                        if (tp->snd_cwnd < tp->snd_cwnd_clamp)
+                                tp->snd_cwnd++;
+                }
+        }
+        tp->bytes_acked = 0;
+
+        if (tp->snd_cwnd < tp->snd_cwnd_clamp)
+                tp->snd_cwnd++;
+}
+EXPORT_SYMBOL_GPL(tcp_slow_start);
+
 /*
  * TCP Reno congestion control
  * This is special case used for fallback as well.
diff --git a/net/ipv4/tcp_cubic.c b/net/ipv4/tcp_cubic.c
new file mode 100644
index 000000000000..31a4986dfbf7
--- /dev/null
+++ b/net/ipv4/tcp_cubic.c
@@ -0,0 +1,411 @@
+/*
+ * TCP CUBIC: Binary Increase Congestion control for TCP v2.0
+ *
+ * This is from the implementation of CUBIC TCP in
+ * Injong Rhee, Lisong Xu.
+ *  "CUBIC: A New TCP-Friendly High-Speed TCP Variant
+ *  in PFLDnet 2005
+ * Available from:
+ *  http://www.csc.ncsu.edu/faculty/rhee/export/bitcp/cubic-paper.pdf
+ *
+ * Unless CUBIC is enabled and congestion window is large
+ * this behaves the same as the original Reno.
+ */
+
+#include <linux/config.h>
+#include <linux/mm.h>
+#include <linux/module.h>
+#include <net/tcp.h>
+#include <asm/div64.h>
+
+#define BICTCP_BETA_SCALE    1024       /* Scale factor beta calculation
+                                         * max_cwnd = snd_cwnd * beta
+                                         */
+#define BICTCP_B                4        /*
+                                          * In binary search,
+                                          * go to point (max+min)/N
+                                          */
+#define BICTCP_HZ               10      /* BIC HZ 2^10 = 1024 */
+
+static int fast_convergence = 1;
+static int max_increment = 16;
+static int beta = 819;          /* = 819/1024 (BICTCP_BETA_SCALE) */
+static int initial_ssthresh = 100;
+static int bic_scale = 41;
+static int tcp_friendliness = 1;
+
+static u32 cube_rtt_scale;
+static u32 beta_scale;
+static u64 cube_factor;
+
+/* Note parameters that are used for precomputing scale factors are read-only */
+module_param(fast_convergence, int, 0644);
+MODULE_PARM_DESC(fast_convergence, "turn on/off fast convergence");
+module_param(max_increment, int, 0644);
+MODULE_PARM_DESC(max_increment, "Limit on increment allowed during binary search");
+module_param(beta, int, 0444);
+MODULE_PARM_DESC(beta, "beta for multiplicative increase");
+module_param(initial_ssthresh, int, 0644);
+MODULE_PARM_DESC(initial_ssthresh, "initial value of slow start threshold");
+module_param(bic_scale, int, 0444);
+MODULE_PARM_DESC(bic_scale, "scale (scaled by 1024) value for bic function (bic_scale/1024)");
+module_param(tcp_friendliness, int, 0644);
+MODULE_PARM_DESC(tcp_friendliness, "turn on/off tcp friendliness");
+
+#include <asm/div64.h>
+
+/* BIC TCP Parameters */
+struct bictcp {
+        u32     cnt;            /* increase cwnd by 1 after ACKs */
+        u32     last_max_cwnd;  /* last maximum snd_cwnd */
+        u32     loss_cwnd;      /* congestion window at last loss */
+        u32     last_cwnd;      /* the last snd_cwnd */
+        u32     last_time;      /* time when updated last_cwnd */
+        u32     bic_origin_point;/* origin point of bic function */
+        u32     bic_K;          /* time to origin point from the beginning of the current epoch */
+        u32     delay_min;      /* min delay */
+        u32     epoch_start;    /* beginning of an epoch */
+        u32     ack_cnt;        /* number of acks */
+        u32     tcp_cwnd;       /* estimated tcp cwnd */
+#define ACK_RATIO_SHIFT 4
+        u32     delayed_ack;    /* estimate the ratio of Packets/ACKs << 4 */
+};
+
+static inline void bictcp_reset(struct bictcp *ca)
+{
+        ca->cnt = 0;
+        ca->last_max_cwnd = 0;
+        ca->loss_cwnd = 0;
+        ca->last_cwnd = 0;
+        ca->last_time = 0;
+        ca->bic_origin_point = 0;
+        ca->bic_K = 0;
+        ca->delay_min = 0;
+        ca->epoch_start = 0;
+        ca->delayed_ack = 2 << ACK_RATIO_SHIFT;
+        ca->ack_cnt = 0;
+        ca->tcp_cwnd = 0;
+}
+
+static void bictcp_init(struct sock *sk)
+{
+        bictcp_reset(inet_csk_ca(sk));
+        if (initial_ssthresh)
+                tcp_sk(sk)->snd_ssthresh = initial_ssthresh;
+}
+
+/* 64bit divisor, dividend and result. dynamic precision */
+static inline u_int64_t div64_64(u_int64_t dividend, u_int64_t divisor)
+{
+        u_int32_t d = divisor;
+
+        if (divisor > 0xffffffffULL) {
+                unsigned int shift = fls(divisor >> 32);
+
+                d = divisor >> shift;
+                dividend >>= shift;
+        }
+
+        /* avoid 64 bit division if possible */
+        if (dividend >> 32)
+                do_div(dividend, d);
+        else
+                dividend = (uint32_t) dividend / d;
+
+        return dividend;
+}
+
+/*
+ * calculate the cubic root of x using Newton-Raphson
+ */
+static u32 cubic_root(u64 a)
+{
+        u32 x, x1;
+
+        /* Initial estimate is based on:
+         * cbrt(x) = exp(log(x) / 3)
+         */
+        x = 1u << (fls64(a)/3);
+
+        /*
+         * Iteration based on:
+         *                         2
+         * x    = ( 2 * x  +  a / x  ) / 3
+         *  k+1          k         k
+         */
+        do {
+                x1 = x;
+                x = (2 * x + (uint32_t) div64_64(a, x*x)) / 3;
+        } while (abs(x1 - x) > 1);
+
+        return x;
+}
+
+/*
+ * Compute congestion window to use.
+ */
+static inline void bictcp_update(struct bictcp *ca, u32 cwnd)
+{
+        u64 offs;
+        u32 delta, t, bic_target, min_cnt, max_cnt;
+
+        ca->ack_cnt++;  /* count the number of ACKs */
+
+        if (ca->last_cwnd == cwnd &&
+            (s32)(tcp_time_stamp - ca->last_time) <= HZ / 32)
+                return;
+
+        ca->last_cwnd = cwnd;
+        ca->last_time = tcp_time_stamp;
+
+        if (ca->epoch_start == 0) {
+                ca->epoch_start = tcp_time_stamp;       /* record the beginning of an epoch */
+                ca->ack_cnt = 1;                        /* start counting */
+                ca->tcp_cwnd = cwnd;                    /* syn with cubic */
+
+                if (ca->last_max_cwnd <= cwnd) {
+                        ca->bic_K = 0;
+                        ca->bic_origin_point = cwnd;
+                } else {
+                        /* Compute new K based on
+                         * (wmax-cwnd) * (srtt>>3 / HZ) / c * 2^(3*bictcp_HZ)
+                         */
+                        ca->bic_K = cubic_root(cube_factor
+                                               * (ca->last_max_cwnd - cwnd));
+                        ca->bic_origin_point = ca->last_max_cwnd;
+                }
+        }
+
+        /* cubic function - calc*/
+        /* calculate c * time^3 / rtt,
+         *  while considering overflow in calculation of time^3
+         * (so time^3 is done by using 64 bit)
+         * and without the support of division of 64bit numbers
+         * (so all divisions are done by using 32 bit)
+         *  also NOTE the unit of those veriables
+         *        time  = (t - K) / 2^bictcp_HZ
+         *        c = bic_scale >> 10
+         * rtt  = (srtt >> 3) / HZ
+         * !!! The following code does not have overflow problems,
+         * if the cwnd < 1 million packets !!!
+         */
+
+        /* change the unit from HZ to bictcp_HZ */
+        t = ((tcp_time_stamp + ca->delay_min - ca->epoch_start)
+             << BICTCP_HZ) / HZ;
+
+        if (t < ca->bic_K)              /* t - K */
+                offs = ca->bic_K - t;
+        else
+                offs = t - ca->bic_K;
+
+        /* c/rtt * (t-K)^3 */
+        delta = (cube_rtt_scale * offs * offs * offs) >> (10+3*BICTCP_HZ);
+        if (t < ca->bic_K)                                      /* below origin*/
+                bic_target = ca->bic_origin_point - delta;
+        else                                                    /* above origin*/
+                bic_target = ca->bic_origin_point + delta;
+
+        /* cubic function - calc bictcp_cnt*/
+        if (bic_target > cwnd) {
+                ca->cnt = cwnd / (bic_target - cwnd);
+        } else {
+                ca->cnt = 100 * cwnd;              /* very small increment*/
+        }
+
+        if (ca->delay_min > 0) {
+                /* max increment = Smax * rtt / 0.1  */
+                min_cnt = (cwnd * HZ * 8)/(10 * max_increment * ca->delay_min);
+                if (ca->cnt < min_cnt)
+                        ca->cnt = min_cnt;
+        }
+
+        /* slow start and low utilization  */
+        if (ca->loss_cwnd == 0)         /* could be aggressive in slow start */
+                ca->cnt = 50;
+
+        /* TCP Friendly */
+        if (tcp_friendliness) {
+                u32 scale = beta_scale;
+                delta = (cwnd * scale) >> 3;
+                while (ca->ack_cnt > delta) {           /* update tcp cwnd */
+                        ca->ack_cnt -= delta;
+                        ca->tcp_cwnd++;
+                }
+
+                if (ca->tcp_cwnd > cwnd){       /* if bic is slower than tcp */
+                        delta = ca->tcp_cwnd - cwnd;
+                        max_cnt = cwnd / delta;
+                        if (ca->cnt > max_cnt)
+                                ca->cnt = max_cnt;
+                }
+        }
+
+        ca->cnt = (ca->cnt << ACK_RATIO_SHIFT) / ca->delayed_ack;
+        if (ca->cnt == 0)                       /* cannot be zero */
+                ca->cnt = 1;
+}
+
+
+/* Keep track of minimum rtt */
+static inline void measure_delay(struct sock *sk)
+{
+        const struct tcp_sock *tp = tcp_sk(sk);
+        struct bictcp *ca = inet_csk_ca(sk);
+        u32 delay;
+
+        /* No time stamp */
+        if (!(tp->rx_opt.saw_tstamp && tp->rx_opt.rcv_tsecr) ||
+             /* Discard delay samples right after fast recovery */
+            (s32)(tcp_time_stamp - ca->epoch_start) < HZ)
+                return;
+
+        delay = tcp_time_stamp - tp->rx_opt.rcv_tsecr;
+        if (delay == 0)
+                delay = 1;
+
+        /* first time call or link delay decreases */
+        if (ca->delay_min == 0 || ca->delay_min > delay)
+                ca->delay_min = delay;
+}
+
+static void bictcp_cong_avoid(struct sock *sk, u32 ack,
+                              u32 seq_rtt, u32 in_flight, int data_acked)
+{
+        struct tcp_sock *tp = tcp_sk(sk);
+        struct bictcp *ca = inet_csk_ca(sk);
+
+        if (data_acked)
+                measure_delay(sk);
+
+        if (!tcp_is_cwnd_limited(sk, in_flight))
+                return;
+
+        if (tp->snd_cwnd <= tp->snd_ssthresh)
+                tcp_slow_start(tp);
+        else {
+                bictcp_update(ca, tp->snd_cwnd);
+
+                /* In dangerous area, increase slowly.
+                 * In theory this is tp->snd_cwnd += 1 / tp->snd_cwnd
+                 */
+                if (tp->snd_cwnd_cnt >= ca->cnt) {
+                        if (tp->snd_cwnd < tp->snd_cwnd_clamp)
+                                tp->snd_cwnd++;
+                        tp->snd_cwnd_cnt = 0;
+                } else
+                        tp->snd_cwnd_cnt++;
+        }
+
+}
+
+static u32 bictcp_recalc_ssthresh(struct sock *sk)
+{
+        const struct tcp_sock *tp = tcp_sk(sk);
+        struct bictcp *ca = inet_csk_ca(sk);
+
+        ca->epoch_start = 0;    /* end of epoch */
+
+        /* Wmax and fast convergence */
+        if (tp->snd_cwnd < ca->last_max_cwnd && fast_convergence)
+                ca->last_max_cwnd = (tp->snd_cwnd * (BICTCP_BETA_SCALE + beta))
+                        / (2 * BICTCP_BETA_SCALE);
+        else
+                ca->last_max_cwnd = tp->snd_cwnd;
+
+        ca->loss_cwnd = tp->snd_cwnd;
+
+        return max((tp->snd_cwnd * beta) / BICTCP_BETA_SCALE, 2U);
+}
+
+static u32 bictcp_undo_cwnd(struct sock *sk)
+{
+        struct bictcp *ca = inet_csk_ca(sk);
+
+        return max(tcp_sk(sk)->snd_cwnd, ca->last_max_cwnd);
+}
+
+static u32 bictcp_min_cwnd(struct sock *sk)
+{
+        return tcp_sk(sk)->snd_ssthresh;
+}
+
+static void bictcp_state(struct sock *sk, u8 new_state)
+{
+        if (new_state == TCP_CA_Loss)
+                bictcp_reset(inet_csk_ca(sk));
+}
+
+/* Track delayed acknowledgment ratio using sliding window
+ * ratio = (15*ratio + sample) / 16
+ */
+static void bictcp_acked(struct sock *sk, u32 cnt)
+{
+        const struct inet_connection_sock *icsk = inet_csk(sk);
+
+        if (cnt > 0 && icsk->icsk_ca_state == TCP_CA_Open) {
+                struct bictcp *ca = inet_csk_ca(sk);
+                cnt -= ca->delayed_ack >> ACK_RATIO_SHIFT;
+                ca->delayed_ack += cnt;
+        }
+}
+
+
+static struct tcp_congestion_ops cubictcp = {
+        .init           = bictcp_init,
+        .ssthresh       = bictcp_recalc_ssthresh,
+        .cong_avoid     = bictcp_cong_avoid,
+        .set_state      = bictcp_state,
+        .undo_cwnd      = bictcp_undo_cwnd,
+        .min_cwnd       = bictcp_min_cwnd,
+        .pkts_acked     = bictcp_acked,
+        .owner          = THIS_MODULE,
+        .name           = "cubic",
+};
+
+static int __init cubictcp_register(void)
+{
+        BUG_ON(sizeof(struct bictcp) > ICSK_CA_PRIV_SIZE);
+
+        /* Precompute a bunch of the scaling factors that are used per-packet
+         * based on SRTT of 100ms
+         */
+
+        beta_scale = 8*(BICTCP_BETA_SCALE+beta)/ 3 / (BICTCP_BETA_SCALE - beta);
+
+        cube_rtt_scale = (bic_scale << 3) / 10; /* 1024*c/rtt */
+
+        /* calculate the "K" for (wmax-cwnd) = c/rtt * K^3
+         *  so K = cubic_root( (wmax-cwnd)*rtt/c )
+         * the unit of K is bictcp_HZ=2^10, not HZ
+         *
+         *  c = bic_scale >> 10
+         *  rtt = 100ms
+         *
+         * the following code has been designed and tested for
+         * cwnd < 1 million packets
+         * RTT < 100 seconds
+         * HZ < 1,000,00  (corresponding to 10 nano-second)
+         */
+
+        /* 1/c * 2^2*bictcp_HZ * srtt */
+        cube_factor = 1ull << (10+3*BICTCP_HZ); /* 2^40 */
+
+        /* divide by bic_scale and by constant Srtt (100ms) */
+        do_div(cube_factor, bic_scale * 10);
+
+        return tcp_register_congestion_control(&cubictcp);
+}
+
+static void __exit cubictcp_unregister(void)
+{
+        tcp_unregister_congestion_control(&cubictcp);
+}
+
+module_init(cubictcp_register);
+module_exit(cubictcp_unregister);
+
+MODULE_AUTHOR("Sangtae Ha, Stephen Hemminger");
+MODULE_LICENSE("GPL");
+MODULE_DESCRIPTION("CUBIC TCP");
+MODULE_VERSION("2.0");
diff --git a/net/ipv4/tcp_input.c b/net/ipv4/tcp_input.c
index bf2e23086bce..0a461232329f 100644
--- a/net/ipv4/tcp_input.c
+++ b/net/ipv4/tcp_input.c
@@ -115,8 +115,8 @@ int sysctl_tcp_abc = 1;
 /* Adapt the MSS value used to make delayed ack decision to the 
  * real world.
  */ 
-static inline void tcp_measure_rcv_mss(struct sock *sk,
-                                       const struct sk_buff *skb)
+static void tcp_measure_rcv_mss(struct sock *sk,
+                                const struct sk_buff *skb)
 {
         struct inet_connection_sock *icsk = inet_csk(sk);
         const unsigned int lss = icsk->icsk_ack.last_seg_size; 
@@ -246,8 +246,8 @@ static int __tcp_grow_window(const struct sock *sk, struct tcp_sock *tp,
         return 0;
 }
 
-static inline void tcp_grow_window(struct sock *sk, struct tcp_sock *tp,
-                                   struct sk_buff *skb)
+static void tcp_grow_window(struct sock *sk, struct tcp_sock *tp,
+                            struct sk_buff *skb)
 {
         /* Check #1 */
         if (tp->rcv_ssthresh < tp->window_clamp &&
@@ -341,6 +341,26 @@ static void tcp_clamp_window(struct sock *sk, struct tcp_sock *tp)
                 tp->rcv_ssthresh = min(tp->window_clamp, 2U*tp->advmss);
 }
 
+
+/* Initialize RCV_MSS value.
+ * RCV_MSS is an our guess about MSS used by the peer.
+ * We haven't any direct information about the MSS.
+ * It's better to underestimate the RCV_MSS rather than overestimate.
+ * Overestimations make us ACKing less frequently than needed.
+ * Underestimations are more easy to detect and fix by tcp_measure_rcv_mss().
+ */
+void tcp_initialize_rcv_mss(struct sock *sk)
+{
+        struct tcp_sock *tp = tcp_sk(sk);
+        unsigned int hint = min_t(unsigned int, tp->advmss, tp->mss_cache);
+
+        hint = min(hint, tp->rcv_wnd/2);
+        hint = min(hint, TCP_MIN_RCVMSS);
+        hint = max(hint, TCP_MIN_MSS);
+
+        inet_csk(sk)->icsk_ack.rcv_mss = hint;
+}
+
 /* Receiver "autotuning" code.
  *
  * The algorithm for RTT estimation w/o timestamps is based on
@@ -735,6 +755,27 @@ __u32 tcp_init_cwnd(struct tcp_sock *tp, struct dst_entry *dst)
         return min_t(__u32, cwnd, tp->snd_cwnd_clamp);
 }
 
+/* Set slow start threshold and cwnd not falling to slow start */
+void tcp_enter_cwr(struct sock *sk)
+{
+        struct tcp_sock *tp = tcp_sk(sk);
+
+        tp->prior_ssthresh = 0;
+        tp->bytes_acked = 0;
+        if (inet_csk(sk)->icsk_ca_state < TCP_CA_CWR) {
+                tp->undo_marker = 0;
+                tp->snd_ssthresh = inet_csk(sk)->icsk_ca_ops->ssthresh(sk);
+                tp->snd_cwnd = min(tp->snd_cwnd,
+                                   tcp_packets_in_flight(tp) + 1U);
+                tp->snd_cwnd_cnt = 0;
+                tp->high_seq = tp->snd_nxt;
+                tp->snd_cwnd_stamp = tcp_time_stamp;
+                TCP_ECN_queue_cwr(tp);
+
+                tcp_set_ca_state(sk, TCP_CA_CWR);
+        }
+}
+
 /* Initialize metrics on socket. */
 
 static void tcp_init_metrics(struct sock *sk)
@@ -2070,8 +2111,8 @@ static inline void tcp_ack_update_rtt(struct sock *sk, const int flag,
                 tcp_ack_no_tstamp(sk, seq_rtt, flag);
 }
 
-static inline void tcp_cong_avoid(struct sock *sk, u32 ack, u32 rtt,
-                                  u32 in_flight, int good)
+static void tcp_cong_avoid(struct sock *sk, u32 ack, u32 rtt,
+                           u32 in_flight, int good)
 {
         const struct inet_connection_sock *icsk = inet_csk(sk);
         icsk->icsk_ca_ops->cong_avoid(sk, ack, rtt, in_flight, good);
@@ -2082,7 +2123,7 @@ static inline void tcp_cong_avoid(struct sock *sk, u32 ack, u32 rtt,
  * RFC2988 recommends to restart timer to now+rto.
  */
 
-static inline void tcp_ack_packets_out(struct sock *sk, struct tcp_sock *tp)
+static void tcp_ack_packets_out(struct sock *sk, struct tcp_sock *tp)
 {
         if (!tp->packets_out) {
                 inet_csk_clear_xmit_timer(sk, ICSK_TIME_RETRANS);
@@ -2147,7 +2188,7 @@ static int tcp_tso_acked(struct sock *sk, struct sk_buff *skb,
         return acked;
 }
 
-static inline u32 tcp_usrtt(const struct sk_buff *skb)
+static u32 tcp_usrtt(const struct sk_buff *skb)
 {
         struct timeval tv, now;
 
@@ -2342,7 +2383,7 @@ static int tcp_ack_update_window(struct sock *sk, struct tcp_sock *tp,
 
                         if (nwin > tp->max_window) {
                                 tp->max_window = nwin;
-                                tcp_sync_mss(sk, tp->pmtu_cookie);
+                                tcp_sync_mss(sk, inet_csk(sk)->icsk_pmtu_cookie);
                         }
                 }
         }
@@ -2583,8 +2624,8 @@ void tcp_parse_options(struct sk_buff *skb, struct tcp_options_received *opt_rx,
 /* Fast parse options. This hopes to only see timestamps.
  * If it is wrong it falls back on tcp_parse_options().
  */
-static inline int tcp_fast_parse_options(struct sk_buff *skb, struct tcphdr *th,
-                                         struct tcp_sock *tp)
+static int tcp_fast_parse_options(struct sk_buff *skb, struct tcphdr *th,
+                                  struct tcp_sock *tp)
 {
         if (th->doff == sizeof(struct tcphdr)>>2) {
                 tp->rx_opt.saw_tstamp = 0;
@@ -2804,8 +2845,7 @@ static void tcp_fin(struct sk_buff *skb, struct sock *sk, struct tcphdr *th)
         }
 }
 
-static __inline__ int
-tcp_sack_extend(struct tcp_sack_block *sp, u32 seq, u32 end_seq)
+static inline int tcp_sack_extend(struct tcp_sack_block *sp, u32 seq, u32 end_seq)
 {
         if (!after(seq, sp->end_seq) && !after(sp->start_seq, end_seq)) {
                 if (before(seq, sp->start_seq))
@@ -2817,7 +2857,7 @@ tcp_sack_extend(struct tcp_sack_block *sp, u32 seq, u32 end_seq)
         return 0;
 }
 
-static inline void tcp_dsack_set(struct tcp_sock *tp, u32 seq, u32 end_seq)
+static void tcp_dsack_set(struct tcp_sock *tp, u32 seq, u32 end_seq)
 {
         if (tp->rx_opt.sack_ok && sysctl_tcp_dsack) {
                 if (before(seq, tp->rcv_nxt))
@@ -2832,7 +2872,7 @@ static inline void tcp_dsack_set(struct tcp_sock *tp, u32 seq, u32 end_seq)
         }
 }
 
-static inline void tcp_dsack_extend(struct tcp_sock *tp, u32 seq, u32 end_seq)
+static void tcp_dsack_extend(struct tcp_sock *tp, u32 seq, u32 end_seq)
 {
         if (!tp->rx_opt.dsack)
                 tcp_dsack_set(tp, seq, end_seq);
@@ -2890,7 +2930,7 @@ static void tcp_sack_maybe_coalesce(struct tcp_sock *tp)
         }
 }
 
-static __inline__ void tcp_sack_swap(struct tcp_sack_block *sack1, struct tcp_sack_block *sack2)
+static inline void tcp_sack_swap(struct tcp_sack_block *sack1, struct tcp_sack_block *sack2)
 {
         __u32 tmp;
 
@@ -3455,7 +3495,7 @@ void tcp_cwnd_application_limited(struct sock *sk)
         tp->snd_cwnd_stamp = tcp_time_stamp;
 }
 
-static inline int tcp_should_expand_sndbuf(struct sock *sk, struct tcp_sock *tp)
+static int tcp_should_expand_sndbuf(struct sock *sk, struct tcp_sock *tp)
 {
         /* If the user specified a specific send buffer setting, do
          * not modify it.
@@ -3502,7 +3542,7 @@ static void tcp_new_space(struct sock *sk)
         sk->sk_write_space(sk);
 }
 
-static inline void tcp_check_space(struct sock *sk)
+static void tcp_check_space(struct sock *sk)
 {
         if (sock_flag(sk, SOCK_QUEUE_SHRUNK)) {
                 sock_reset_flag(sk, SOCK_QUEUE_SHRUNK);
@@ -3512,7 +3552,7 @@ static inline void tcp_check_space(struct sock *sk)
         }
 }
 
-static __inline__ void tcp_data_snd_check(struct sock *sk, struct tcp_sock *tp)
+static inline void tcp_data_snd_check(struct sock *sk, struct tcp_sock *tp)
 {
         tcp_push_pending_frames(sk, tp);
         tcp_check_space(sk);
@@ -3544,7 +3584,7 @@ static void __tcp_ack_snd_check(struct sock *sk, int ofo_possible)
         }
 }
 
-static __inline__ void tcp_ack_snd_check(struct sock *sk)
+static inline void tcp_ack_snd_check(struct sock *sk)
 {
         if (!inet_csk_ack_scheduled(sk)) {
                 /* We sent a data segment already. */
@@ -3692,8 +3732,7 @@ static int __tcp_checksum_complete_user(struct sock *sk, struct sk_buff *skb)
         return result;
 }
 
-static __inline__ int
-tcp_checksum_complete_user(struct sock *sk, struct sk_buff *skb)
+static inline int tcp_checksum_complete_user(struct sock *sk, struct sk_buff *skb)
 {
         return skb->ip_summed != CHECKSUM_UNNECESSARY &&
                 __tcp_checksum_complete_user(sk, skb);
@@ -3967,12 +4006,12 @@ static int tcp_rcv_synsent_state_process(struct sock *sk, struct sk_buff *skb,
                                          struct tcphdr *th, unsigned len)
 {
         struct tcp_sock *tp = tcp_sk(sk);
+        struct inet_connection_sock *icsk = inet_csk(sk);
         int saved_clamp = tp->rx_opt.mss_clamp;
 
         tcp_parse_options(skb, &tp->rx_opt, 0);
 
         if (th->ack) {
-                struct inet_connection_sock *icsk;
                 /* rfc793:
                  * "If the state is SYN-SENT then
                  *    first check the ACK bit
@@ -4061,7 +4100,7 @@ static int tcp_rcv_synsent_state_process(struct sock *sk, struct sk_buff *skb,
                 if (tp->rx_opt.sack_ok && sysctl_tcp_fack)
                         tp->rx_opt.sack_ok |= 2;
 
-                tcp_sync_mss(sk, tp->pmtu_cookie);
+                tcp_sync_mss(sk, icsk->icsk_pmtu_cookie);
                 tcp_initialize_rcv_mss(sk);
 
                 /* Remember, tcp_poll() does not lock socket!
@@ -4072,7 +4111,7 @@ static int tcp_rcv_synsent_state_process(struct sock *sk, struct sk_buff *skb,
                 tcp_set_state(sk, TCP_ESTABLISHED);
 
                 /* Make sure socket is routed, for correct metrics.  */
-                tp->af_specific->rebuild_header(sk);
+                icsk->icsk_af_ops->rebuild_header(sk);
 
                 tcp_init_metrics(sk);
 
@@ -4098,8 +4137,6 @@ static int tcp_rcv_synsent_state_process(struct sock *sk, struct sk_buff *skb,
                         sk_wake_async(sk, 0, POLL_OUT);
                 }
 
-                icsk = inet_csk(sk);
-
                 if (sk->sk_write_pending ||
                     icsk->icsk_accept_queue.rskq_defer_accept ||
                     icsk->icsk_ack.pingpong) {
@@ -4173,7 +4210,7 @@ discard:
                 if (tp->ecn_flags&TCP_ECN_OK)
                         sock_set_flag(sk, SOCK_NO_LARGESEND);
 
-                tcp_sync_mss(sk, tp->pmtu_cookie);
+                tcp_sync_mss(sk, icsk->icsk_pmtu_cookie);
                 tcp_initialize_rcv_mss(sk);
 
 
@@ -4220,6 +4257,7 @@ int tcp_rcv_state_process(struct sock *sk, struct sk_buff *skb,
                           struct tcphdr *th, unsigned len)
 {
         struct tcp_sock *tp = tcp_sk(sk);
+        struct inet_connection_sock *icsk = inet_csk(sk);
         int queued = 0;
 
         tp->rx_opt.saw_tstamp = 0;
@@ -4236,7 +4274,7 @@ int tcp_rcv_state_process(struct sock *sk, struct sk_buff *skb,
                         goto discard;
 
                 if(th->syn) {
-                        if(tp->af_specific->conn_request(sk, skb) < 0)
+                        if (icsk->icsk_af_ops->conn_request(sk, skb) < 0)
                                 return 1;
 
                         /* Now we have several options: In theory there is 
@@ -4349,7 +4387,7 @@ int tcp_rcv_state_process(struct sock *sk, struct sk_buff *skb,
                                 /* Make sure socket is routed, for
                                  * correct metrics.
                                  */
-                                tp->af_specific->rebuild_header(sk);
+                                icsk->icsk_af_ops->rebuild_header(sk);
 
                                 tcp_init_metrics(sk);
 
@@ -4475,3 +4513,4 @@ EXPORT_SYMBOL(sysctl_tcp_abc);
 EXPORT_SYMBOL(tcp_parse_options);
 EXPORT_SYMBOL(tcp_rcv_established);
 EXPORT_SYMBOL(tcp_rcv_state_process);
+EXPORT_SYMBOL(tcp_initialize_rcv_mss);
diff --git a/net/ipv4/tcp_ipv4.c b/net/ipv4/tcp_ipv4.c
index 4d5021e1929b..e9f83e5b28ce 100644
--- a/net/ipv4/tcp_ipv4.c
+++ b/net/ipv4/tcp_ipv4.c
@@ -69,6 +69,7 @@
 #include <net/transp_v6.h>
 #include <net/ipv6.h>
 #include <net/inet_common.h>
+#include <net/timewait_sock.h>
 #include <net/xfrm.h>
 
 #include <linux/inet.h>
@@ -86,8 +87,7 @@ int sysctl_tcp_low_latency;
 /* Socket used for sending RSTs */
 static struct socket *tcp_socket;
 
-void tcp_v4_send_check(struct sock *sk, struct tcphdr *th, int len,
-                       struct sk_buff *skb);
+void tcp_v4_send_check(struct sock *sk, int len, struct sk_buff *skb);
 
 struct inet_hashinfo __cacheline_aligned tcp_hashinfo = {
         .lhash_lock     = RW_LOCK_UNLOCKED,
@@ -97,7 +97,8 @@ struct inet_hashinfo __cacheline_aligned tcp_hashinfo = {
 
 static int tcp_v4_get_port(struct sock *sk, unsigned short snum)
 {
-        return inet_csk_get_port(&tcp_hashinfo, sk, snum);
+        return inet_csk_get_port(&tcp_hashinfo, sk, snum,
+                                 inet_csk_bind_conflict);
 }
 
 static void tcp_v4_hash(struct sock *sk)
@@ -118,202 +119,38 @@ static inline __u32 tcp_v4_init_sequence(struct sock *sk, struct sk_buff *skb)
                                           skb->h.th->source);
 }
 
-/* called with local bh disabled */
-static int __tcp_v4_check_established(struct sock *sk, __u16 lport,
-                                      struct inet_timewait_sock **twp)
+int tcp_twsk_unique(struct sock *sk, struct sock *sktw, void *twp)
 {
-        struct inet_sock *inet = inet_sk(sk);
-        u32 daddr = inet->rcv_saddr;
-        u32 saddr = inet->daddr;
-        int dif = sk->sk_bound_dev_if;
-        INET_ADDR_COOKIE(acookie, saddr, daddr)
-        const __u32 ports = INET_COMBINED_PORTS(inet->dport, lport);
-        unsigned int hash = inet_ehashfn(daddr, lport, saddr, inet->dport);
-        struct inet_ehash_bucket *head = inet_ehash_bucket(&tcp_hashinfo, hash);
-        struct sock *sk2;
-        const struct hlist_node *node;
-        struct inet_timewait_sock *tw;
-
-        prefetch(head->chain.first);
-        write_lock(&head->lock);
-
-        /* Check TIME-WAIT sockets first. */
-        sk_for_each(sk2, node, &(head + tcp_hashinfo.ehash_size)->chain) {
-                tw = inet_twsk(sk2);
-
-                if (INET_TW_MATCH(sk2, hash, acookie, saddr, daddr, ports, dif)) {
-                        const struct tcp_timewait_sock *tcptw = tcp_twsk(sk2);
-                        struct tcp_sock *tp = tcp_sk(sk);
-
-                        /* With PAWS, it is safe from the viewpoint
-                           of data integrity. Even without PAWS it
-                           is safe provided sequence spaces do not
-                           overlap i.e. at data rates <= 80Mbit/sec.
-
-                           Actually, the idea is close to VJ's one,
-                           only timestamp cache is held not per host,
-                           but per port pair and TW bucket is used
-                           as state holder.
+        const struct tcp_timewait_sock *tcptw = tcp_twsk(sktw);
+        struct tcp_sock *tp = tcp_sk(sk);
 
-                           If TW bucket has been already destroyed we
-                           fall back to VJ's scheme and use initial
-                           timestamp retrieved from peer table.
-                         */
-                        if (tcptw->tw_ts_recent_stamp &&
-                            (!twp || (sysctl_tcp_tw_reuse &&
-                                      xtime.tv_sec -
-                                      tcptw->tw_ts_recent_stamp > 1))) {
-                                tp->write_seq = tcptw->tw_snd_nxt + 65535 + 2;
-                                if (tp->write_seq == 0)
-                                        tp->write_seq = 1;
-                                tp->rx_opt.ts_recent       = tcptw->tw_ts_recent;
-                                tp->rx_opt.ts_recent_stamp = tcptw->tw_ts_recent_stamp;
-                                sock_hold(sk2);
-                                goto unique;
-                        } else
-                                goto not_unique;
-                }
-        }
-        tw = NULL;
+        /* With PAWS, it is safe from the viewpoint
+           of data integrity. Even without PAWS it is safe provided sequence
+           spaces do not overlap i.e. at data rates <= 80Mbit/sec.
 
-        /* And established part... */
-        sk_for_each(sk2, node, &head->chain) {
-                if (INET_MATCH(sk2, hash, acookie, saddr, daddr, ports, dif))
-                        goto not_unique;
-        }
+           Actually, the idea is close to VJ's one, only timestamp cache is
+           held not per host, but per port pair and TW bucket is used as state
+           holder.
 
-unique:
-        /* Must record num and sport now. Otherwise we will see
-         * in hash table socket with a funny identity. */
-        inet->num = lport;
-        inet->sport = htons(lport);
-        sk->sk_hash = hash;
-        BUG_TRAP(sk_unhashed(sk));
-        __sk_add_node(sk, &head->chain);
-        sock_prot_inc_use(sk->sk_prot);
-        write_unlock(&head->lock);
-
-        if (twp) {
-                *twp = tw;
-                NET_INC_STATS_BH(LINUX_MIB_TIMEWAITRECYCLED);
-        } else if (tw) {
-                /* Silly. Should hash-dance instead... */
-                inet_twsk_deschedule(tw, &tcp_death_row);
-                NET_INC_STATS_BH(LINUX_MIB_TIMEWAITRECYCLED);
-
-                inet_twsk_put(tw);
+           If TW bucket has been already destroyed we fall back to VJ's scheme
+           and use initial timestamp retrieved from peer table.
+         */
+        if (tcptw->tw_ts_recent_stamp &&
+            (twp == NULL || (sysctl_tcp_tw_reuse &&
+                             xtime.tv_sec - tcptw->tw_ts_recent_stamp > 1))) {
+                tp->write_seq = tcptw->tw_snd_nxt + 65535 + 2;
+                if (tp->write_seq == 0)
+                        tp->write_seq = 1;
+                tp->rx_opt.ts_recent       = tcptw->tw_ts_recent;
+                tp->rx_opt.ts_recent_stamp = tcptw->tw_ts_recent_stamp;
+                sock_hold(sktw);
+                return 1;
         }
 
         return 0;
-
-not_unique:
-        write_unlock(&head->lock);
-        return -EADDRNOTAVAIL;
 }
 
-static inline u32 connect_port_offset(const struct sock *sk)
-{
-        const struct inet_sock *inet = inet_sk(sk);
-
-        return secure_tcp_port_ephemeral(inet->rcv_saddr, inet->daddr, 
-                                         inet->dport);
-}
-
-/*
- * Bind a port for a connect operation and hash it.
- */
-static inline int tcp_v4_hash_connect(struct sock *sk)
-{
-        const unsigned short snum = inet_sk(sk)->num;
-        struct inet_bind_hashbucket *head;
-        struct inet_bind_bucket *tb;
-        int ret;
-
-        if (!snum) {
-                int low = sysctl_local_port_range[0];
-                int high = sysctl_local_port_range[1];
-                int range = high - low;
-                int i;
-                int port;
-                static u32 hint;
-                u32 offset = hint + connect_port_offset(sk);
-                struct hlist_node *node;
-                struct inet_timewait_sock *tw = NULL;
-
-                local_bh_disable();
-                for (i = 1; i <= range; i++) {
-                        port = low + (i + offset) % range;
-                        head = &tcp_hashinfo.bhash[inet_bhashfn(port, tcp_hashinfo.bhash_size)];
-                        spin_lock(&head->lock);
-
-                        /* Does not bother with rcv_saddr checks,
-                         * because the established check is already
-                         * unique enough.
-                         */
-                        inet_bind_bucket_for_each(tb, node, &head->chain) {
-                                if (tb->port == port) {
-                                        BUG_TRAP(!hlist_empty(&tb->owners));
-                                        if (tb->fastreuse >= 0)
-                                                goto next_port;
-                                        if (!__tcp_v4_check_established(sk,
-                                                                        port,
-                                                                        &tw))
-                                                goto ok;
-                                        goto next_port;
-                                }
-                        }
-
-                        tb = inet_bind_bucket_create(tcp_hashinfo.bind_bucket_cachep, head, port);
-                        if (!tb) {
-                                spin_unlock(&head->lock);
-                                break;
-                        }
-                        tb->fastreuse = -1;
-                        goto ok;
-
-                next_port:
-                        spin_unlock(&head->lock);
-                }
-                local_bh_enable();
-
-                return -EADDRNOTAVAIL;
-
-ok:
-                hint += i;
-
-                /* Head lock still held and bh's disabled */
-                inet_bind_hash(sk, tb, port);
-                if (sk_unhashed(sk)) {
-                        inet_sk(sk)->sport = htons(port);
-                        __inet_hash(&tcp_hashinfo, sk, 0);
-                }
-                spin_unlock(&head->lock);
-
-                if (tw) {
-                        inet_twsk_deschedule(tw, &tcp_death_row);;
-                        inet_twsk_put(tw);
-                }
-
-                ret = 0;
-                goto out;
-        }
-
-        head = &tcp_hashinfo.bhash[inet_bhashfn(snum, tcp_hashinfo.bhash_size)];
-        tb  = inet_csk(sk)->icsk_bind_hash;
-        spin_lock_bh(&head->lock);
-        if (sk_head(&tb->owners) == sk && !sk->sk_bind_node.next) {
-                __inet_hash(&tcp_hashinfo, sk, 0);
-                spin_unlock_bh(&head->lock);
-                return 0;
-        } else {
-                spin_unlock(&head->lock);
-                /* No definite answer... Walk to established hash table */
-                ret = __tcp_v4_check_established(sk, snum, NULL);
-out:
-                local_bh_enable();
-                return ret;
-        }
-}
+EXPORT_SYMBOL_GPL(tcp_twsk_unique);
 
 /* This will initiate an outgoing connection. */
 int tcp_v4_connect(struct sock *sk, struct sockaddr *uaddr, int addr_len)
@@ -383,9 +220,9 @@ int tcp_v4_connect(struct sock *sk, struct sockaddr *uaddr, int addr_len)
         inet->dport = usin->sin_port;
         inet->daddr = daddr;
 
-        tp->ext_header_len = 0;
+        inet_csk(sk)->icsk_ext_hdr_len = 0;
         if (inet->opt)
-                tp->ext_header_len = inet->opt->optlen;
+                inet_csk(sk)->icsk_ext_hdr_len = inet->opt->optlen;
 
         tp->rx_opt.mss_clamp = 536;
 
@@ -395,7 +232,7 @@ int tcp_v4_connect(struct sock *sk, struct sockaddr *uaddr, int addr_len)
          * complete initialization after this.
          */
         tcp_set_state(sk, TCP_SYN_SENT);
-        err = tcp_v4_hash_connect(sk);
+        err = inet_hash_connect(&tcp_death_row, sk);
         if (err)
                 goto failure;
 
@@ -433,12 +270,10 @@ failure:
 /*
  * This routine does path mtu discovery as defined in RFC1191.
  */
-static inline void do_pmtu_discovery(struct sock *sk, struct iphdr *iph,
-                                     u32 mtu)
+static void do_pmtu_discovery(struct sock *sk, struct iphdr *iph, u32 mtu)
 {
         struct dst_entry *dst;
         struct inet_sock *inet = inet_sk(sk);
-        struct tcp_sock *tp = tcp_sk(sk);
 
         /* We are not interested in TCP_LISTEN and open_requests (SYN-ACKs
          * send out by Linux are always <576bytes so they should go through
@@ -467,7 +302,7 @@ static inline void do_pmtu_discovery(struct sock *sk, struct iphdr *iph,
         mtu = dst_mtu(dst);
 
         if (inet->pmtudisc != IP_PMTUDISC_DONT &&
-            tp->pmtu_cookie > mtu) {
+            inet_csk(sk)->icsk_pmtu_cookie > mtu) {
                 tcp_sync_mss(sk, mtu);
 
                 /* Resend the TCP packet because it's
@@ -644,10 +479,10 @@ out:
 }
 
 /* This routine computes an IPv4 TCP checksum. */
-void tcp_v4_send_check(struct sock *sk, struct tcphdr *th, int len,
-                       struct sk_buff *skb)
+void tcp_v4_send_check(struct sock *sk, int len, struct sk_buff *skb)
 {
         struct inet_sock *inet = inet_sk(sk);
+        struct tcphdr *th = skb->h.th;
 
         if (skb->ip_summed == CHECKSUM_HW) {
                 th->check = ~tcp_v4_check(th, len, inet->saddr, inet->daddr, 0);
@@ -826,7 +661,8 @@ static void tcp_v4_reqsk_destructor(struct request_sock *req)
         kfree(inet_rsk(req)->opt);
 }
 
-static inline void syn_flood_warning(struct sk_buff *skb)
+#ifdef CONFIG_SYN_COOKIES
+static void syn_flood_warning(struct sk_buff *skb)
 {
         static unsigned long warntime;
 
@@ -837,12 +673,13 @@ static inline void syn_flood_warning(struct sk_buff *skb)
                        ntohs(skb->h.th->dest));
         }
 }
+#endif
 
 /*
  * Save and compile IPv4 options into the request_sock if needed.
  */
-static inline struct ip_options *tcp_v4_save_options(struct sock *sk,
-                                                     struct sk_buff *skb)
+static struct ip_options *tcp_v4_save_options(struct sock *sk,
+                                              struct sk_buff *skb)
 {
         struct ip_options *opt = &(IPCB(skb)->opt);
         struct ip_options *dopt = NULL;
@@ -869,6 +706,11 @@ struct request_sock_ops tcp_request_sock_ops = {
         .send_reset     =       tcp_v4_send_reset,
 };
 
+static struct timewait_sock_ops tcp_timewait_sock_ops = {
+        .twsk_obj_size  = sizeof(struct tcp_timewait_sock),
+        .twsk_unique    = tcp_twsk_unique,
+};
+
 int tcp_v4_conn_request(struct sock *sk, struct sk_buff *skb)
 {
         struct inet_request_sock *ireq;
@@ -1053,9 +895,9 @@ struct sock *tcp_v4_syn_recv_sock(struct sock *sk, struct sk_buff *skb,
         ireq->opt             = NULL;
         newinet->mc_index     = inet_iif(skb);
         newinet->mc_ttl       = skb->nh.iph->ttl;
-        newtp->ext_header_len = 0;
+        inet_csk(newsk)->icsk_ext_hdr_len = 0;
         if (newinet->opt)
-                newtp->ext_header_len = newinet->opt->optlen;
+                inet_csk(newsk)->icsk_ext_hdr_len = newinet->opt->optlen;
         newinet->id = newtp->write_seq ^ jiffies;
 
         tcp_sync_mss(newsk, dst_mtu(dst));
@@ -1314,16 +1156,6 @@ do_time_wait:
         goto discard_it;
 }
 
-static void v4_addr2sockaddr(struct sock *sk, struct sockaddr * uaddr)
-{
-        struct sockaddr_in *sin = (struct sockaddr_in *) uaddr;
-        struct inet_sock *inet = inet_sk(sk);
-
-        sin->sin_family         = AF_INET;
-        sin->sin_addr.s_addr    = inet->daddr;
-        sin->sin_port           = inet->dport;
-}
-
 /* VJ's idea. Save last timestamp seen from this destination
  * and hold it at least for normal timewait interval to use for duplicate
  * segment detection in subsequent connections, before they enter synchronized
@@ -1382,7 +1214,7 @@ int tcp_v4_tw_remember_stamp(struct inet_timewait_sock *tw)
         return 0;
 }
 
-struct tcp_func ipv4_specific = {
+struct inet_connection_sock_af_ops ipv4_specific = {
         .queue_xmit     =       ip_queue_xmit,
         .send_check     =       tcp_v4_send_check,
         .rebuild_header =       inet_sk_rebuild_header,
@@ -1392,7 +1224,7 @@ struct tcp_func ipv4_specific = {
         .net_header_len =       sizeof(struct iphdr),
         .setsockopt     =       ip_setsockopt,
         .getsockopt     =       ip_getsockopt,
-        .addr2sockaddr  =       v4_addr2sockaddr,
+        .addr2sockaddr  =       inet_csk_addr2sockaddr,
         .sockaddr_len   =       sizeof(struct sockaddr_in),
 };
 
@@ -1433,7 +1265,8 @@ static int tcp_v4_init_sock(struct sock *sk)
         sk->sk_write_space = sk_stream_write_space;
         sock_set_flag(sk, SOCK_USE_WRITE_QUEUE);
 
-        tp->af_specific = &ipv4_specific;
+        icsk->icsk_af_ops = &ipv4_specific;
+        icsk->icsk_sync_mss = tcp_sync_mss;
 
         sk->sk_sndbuf = sysctl_tcp_wmem[1];
         sk->sk_rcvbuf = sysctl_tcp_rmem[1];
@@ -1989,7 +1822,7 @@ struct proto tcp_prot = {
         .sysctl_rmem            = sysctl_tcp_rmem,
         .max_header             = MAX_TCP_HEADER,
         .obj_size               = sizeof(struct tcp_sock),
-        .twsk_obj_size          = sizeof(struct tcp_timewait_sock),
+        .twsk_prot              = &tcp_timewait_sock_ops,
         .rsk_prot               = &tcp_request_sock_ops,
 };
 
diff --git a/net/ipv4/tcp_minisocks.c b/net/ipv4/tcp_minisocks.c
index 1b66a2ac4321..2b9b7f6c7f7c 100644
--- a/net/ipv4/tcp_minisocks.c
+++ b/net/ipv4/tcp_minisocks.c
@@ -274,18 +274,18 @@ kill:
 void tcp_time_wait(struct sock *sk, int state, int timeo)
 {
         struct inet_timewait_sock *tw = NULL;
+        const struct inet_connection_sock *icsk = inet_csk(sk);
         const struct tcp_sock *tp = tcp_sk(sk);
         int recycle_ok = 0;
 
         if (tcp_death_row.sysctl_tw_recycle && tp->rx_opt.ts_recent_stamp)
-                recycle_ok = tp->af_specific->remember_stamp(sk);
+                recycle_ok = icsk->icsk_af_ops->remember_stamp(sk);
 
         if (tcp_death_row.tw_count < tcp_death_row.sysctl_max_tw_buckets)
                 tw = inet_twsk_alloc(sk, state);
 
         if (tw != NULL) {
                 struct tcp_timewait_sock *tcptw = tcp_twsk((struct sock *)tw);
-                const struct inet_connection_sock *icsk = inet_csk(sk);
                 const int rto = (icsk->icsk_rto << 2) - (icsk->icsk_rto >> 1);
 
                 tw->tw_rcv_wscale       = tp->rx_opt.rcv_wscale;
@@ -298,10 +298,12 @@ void tcp_time_wait(struct sock *sk, int state, int timeo)
 #if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
                 if (tw->tw_family == PF_INET6) {
                         struct ipv6_pinfo *np = inet6_sk(sk);
-                        struct tcp6_timewait_sock *tcp6tw = tcp6_twsk((struct sock *)tw);
+                        struct inet6_timewait_sock *tw6;
 
-                        ipv6_addr_copy(&tcp6tw->tw_v6_daddr, &np->daddr);
-                        ipv6_addr_copy(&tcp6tw->tw_v6_rcv_saddr, &np->rcv_saddr);
+                        tw->tw_ipv6_offset = inet6_tw_offset(sk->sk_prot);
+                        tw6 = inet6_twsk((struct sock *)tw);
+                        ipv6_addr_copy(&tw6->tw_v6_daddr, &np->daddr);
+                        ipv6_addr_copy(&tw6->tw_v6_rcv_saddr, &np->rcv_saddr);
                         tw->tw_ipv6only = np->ipv6only;
                 }
 #endif
@@ -456,7 +458,6 @@ struct sock *tcp_check_req(struct sock *sk,struct sk_buff *skb,
                            struct request_sock **prev)
 {
         struct tcphdr *th = skb->h.th;
-        struct tcp_sock *tp = tcp_sk(sk);
         u32 flg = tcp_flag_word(th) & (TCP_FLAG_RST|TCP_FLAG_SYN|TCP_FLAG_ACK);
         int paws_reject = 0;
         struct tcp_options_received tmp_opt;
@@ -613,7 +614,8 @@ struct sock *tcp_check_req(struct sock *sk,struct sk_buff *skb,
                  * ESTABLISHED STATE. If it will be dropped after
                  * socket is created, wait for troubles.
                  */
-                child = tp->af_specific->syn_recv_sock(sk, skb, req, NULL);
+                child = inet_csk(sk)->icsk_af_ops->syn_recv_sock(sk, skb,
+                                                                 req, NULL);
                 if (child == NULL)
                         goto listen_overflow;
 
diff --git a/net/ipv4/tcp_output.c b/net/ipv4/tcp_output.c
index b7325e0b406a..a7623ead39a8 100644
--- a/net/ipv4/tcp_output.c
+++ b/net/ipv4/tcp_output.c
@@ -51,8 +51,8 @@ int sysctl_tcp_retrans_collapse = 1;
  */
 int sysctl_tcp_tso_win_divisor = 3;
 
-static inline void update_send_head(struct sock *sk, struct tcp_sock *tp,
-                                    struct sk_buff *skb)
+static void update_send_head(struct sock *sk, struct tcp_sock *tp,
+                             struct sk_buff *skb)
 {
         sk->sk_send_head = skb->next;
         if (sk->sk_send_head == (struct sk_buff *)&sk->sk_write_queue)
@@ -124,8 +124,8 @@ static void tcp_cwnd_restart(struct sock *sk, struct dst_entry *dst)
         tp->snd_cwnd_used = 0;
 }
 
-static inline void tcp_event_data_sent(struct tcp_sock *tp,
-                                       struct sk_buff *skb, struct sock *sk)
+static void tcp_event_data_sent(struct tcp_sock *tp,
+                                struct sk_buff *skb, struct sock *sk)
 {
         struct inet_connection_sock *icsk = inet_csk(sk);
         const u32 now = tcp_time_stamp;
@@ -142,7 +142,7 @@ static inline void tcp_event_data_sent(struct tcp_sock *tp,
                 icsk->icsk_ack.pingpong = 1;
 }
 
-static __inline__ void tcp_event_ack_sent(struct sock *sk, unsigned int pkts)
+static inline void tcp_event_ack_sent(struct sock *sk, unsigned int pkts)
 {
         tcp_dec_quickack_mode(sk, pkts);
         inet_csk_clear_xmit_timer(sk, ICSK_TIME_DACK);
@@ -212,7 +212,7 @@ void tcp_select_initial_window(int __space, __u32 mss,
  * value can be stuffed directly into th->window for an outgoing
  * frame.
  */
-static __inline__ u16 tcp_select_window(struct sock *sk)
+static u16 tcp_select_window(struct sock *sk)
 {
         struct tcp_sock *tp = tcp_sk(sk);
         u32 cur_win = tcp_receive_window(tp);
@@ -250,6 +250,75 @@ static __inline__ u16 tcp_select_window(struct sock *sk)
         return new_win;
 }
 
+static void tcp_build_and_update_options(__u32 *ptr, struct tcp_sock *tp,
+                                         __u32 tstamp)
+{
+        if (tp->rx_opt.tstamp_ok) {
+                *ptr++ = __constant_htonl((TCPOPT_NOP << 24) |
+                                          (TCPOPT_NOP << 16) |
+                                          (TCPOPT_TIMESTAMP << 8) |
+                                          TCPOLEN_TIMESTAMP);
+                *ptr++ = htonl(tstamp);
+                *ptr++ = htonl(tp->rx_opt.ts_recent);
+        }
+        if (tp->rx_opt.eff_sacks) {
+                struct tcp_sack_block *sp = tp->rx_opt.dsack ? tp->duplicate_sack : tp->selective_acks;
+                int this_sack;
+
+                *ptr++ = htonl((TCPOPT_NOP  << 24) |
+                               (TCPOPT_NOP  << 16) |
+                               (TCPOPT_SACK <<  8) |
+                               (TCPOLEN_SACK_BASE + (tp->rx_opt.eff_sacks *
+                                                     TCPOLEN_SACK_PERBLOCK)));
+                for(this_sack = 0; this_sack < tp->rx_opt.eff_sacks; this_sack++) {
+                        *ptr++ = htonl(sp[this_sack].start_seq);
+                        *ptr++ = htonl(sp[this_sack].end_seq);
+                }
+                if (tp->rx_opt.dsack) {
+                        tp->rx_opt.dsack = 0;
+                        tp->rx_opt.eff_sacks--;
+                }
+        }
+}
+
+/* Construct a tcp options header for a SYN or SYN_ACK packet.
+ * If this is every changed make sure to change the definition of
+ * MAX_SYN_SIZE to match the new maximum number of options that you
+ * can generate.
+ */
+static void tcp_syn_build_options(__u32 *ptr, int mss, int ts, int sack,
+                                  int offer_wscale, int wscale, __u32 tstamp,
+                                  __u32 ts_recent)
+{
+        /* We always get an MSS option.
+         * The option bytes which will be seen in normal data
+         * packets should timestamps be used, must be in the MSS
+         * advertised.  But we subtract them from tp->mss_cache so
+         * that calculations in tcp_sendmsg are simpler etc.
+         * So account for this fact here if necessary.  If we
+         * don't do this correctly, as a receiver we won't
+         * recognize data packets as being full sized when we
+         * should, and thus we won't abide by the delayed ACK
+         * rules correctly.
+         * SACKs don't matter, we never delay an ACK when we
+         * have any of those going out.
+         */
+        *ptr++ = htonl((TCPOPT_MSS << 24) | (TCPOLEN_MSS << 16) | mss);
+        if (ts) {
+                if(sack)
+                        *ptr++ = __constant_htonl((TCPOPT_SACK_PERM << 24) | (TCPOLEN_SACK_PERM << 16) |
+                                                  (TCPOPT_TIMESTAMP << 8) | TCPOLEN_TIMESTAMP);
+                else
+                        *ptr++ = __constant_htonl((TCPOPT_NOP << 24) | (TCPOPT_NOP << 16) |
+                                                  (TCPOPT_TIMESTAMP << 8) | TCPOLEN_TIMESTAMP);
+                *ptr++ = htonl(tstamp);         /* TSVAL */
+                *ptr++ = htonl(ts_recent);      /* TSECR */
+        } else if(sack)
+                *ptr++ = __constant_htonl((TCPOPT_NOP << 24) | (TCPOPT_NOP << 16) |
+                                          (TCPOPT_SACK_PERM << 8) | TCPOLEN_SACK_PERM);
+        if (offer_wscale)
+                *ptr++ = htonl((TCPOPT_NOP << 24) | (TCPOPT_WINDOW << 16) | (TCPOLEN_WINDOW << 8) | (wscale));
+}
 
 /* This routine actually transmits TCP packets queued in by
  * tcp_do_sendmsg().  This is used by both the initial
@@ -371,7 +440,7 @@ static int tcp_transmit_skb(struct sock *sk, struct sk_buff *skb, int clone_it,
                 TCP_ECN_send(sk, tp, skb, tcp_header_size);
         }
 
-        tp->af_specific->send_check(sk, th, skb->len, skb);
+        icsk->icsk_af_ops->send_check(sk, skb->len, skb);
 
         if (likely(tcb->flags & TCPCB_FLAG_ACK))
                 tcp_event_ack_sent(sk, tcp_skb_pcount(skb));
@@ -381,7 +450,7 @@ static int tcp_transmit_skb(struct sock *sk, struct sk_buff *skb, int clone_it,
 
         TCP_INC_STATS(TCP_MIB_OUTSEGS);
 
-        err = tp->af_specific->queue_xmit(skb, 0);
+        err = icsk->icsk_af_ops->queue_xmit(skb, 0);
         if (unlikely(err <= 0))
                 return err;
 
@@ -621,7 +690,7 @@ int tcp_trim_head(struct sock *sk, struct sk_buff *skb, u32 len)
    It is minimum of user_mss and mss received with SYN.
    It also does not include TCP options.
 
-   tp->pmtu_cookie is last pmtu, seen by this function.
+   inet_csk(sk)->icsk_pmtu_cookie is last pmtu, seen by this function.
 
    tp->mss_cache is current effective sending mss, including
    all tcp options except for SACKs. It is evaluated,
@@ -631,26 +700,26 @@ int tcp_trim_head(struct sock *sk, struct sk_buff *skb, u32 len)
    NOTE1. rfc1122 clearly states that advertised MSS
    DOES NOT include either tcp or ip options.
 
-   NOTE2. tp->pmtu_cookie and tp->mss_cache are READ ONLY outside
-   this function.                       --ANK (980731)
+   NOTE2. inet_csk(sk)->icsk_pmtu_cookie and tp->mss_cache
+   are READ ONLY outside this function.         --ANK (980731)
  */
 
 unsigned int tcp_sync_mss(struct sock *sk, u32 pmtu)
 {
         struct tcp_sock *tp = tcp_sk(sk);
-        int mss_now;
-
+        struct inet_connection_sock *icsk = inet_csk(sk);
         /* Calculate base mss without TCP options:
            It is MMS_S - sizeof(tcphdr) of rfc1122
          */
-        mss_now = pmtu - tp->af_specific->net_header_len - sizeof(struct tcphdr);
+        int mss_now = (pmtu - icsk->icsk_af_ops->net_header_len -
+                       sizeof(struct tcphdr));
 
         /* Clamp it (mss_clamp does not include tcp options) */
         if (mss_now > tp->rx_opt.mss_clamp)
                 mss_now = tp->rx_opt.mss_clamp;
 
         /* Now subtract optional transport overhead */
-        mss_now -= tp->ext_header_len;
+        mss_now -= icsk->icsk_ext_hdr_len;
 
         /* Then reserve room for full set of TCP options and 8 bytes of data */
         if (mss_now < 48)
@@ -664,7 +733,7 @@ unsigned int tcp_sync_mss(struct sock *sk, u32 pmtu)
                 mss_now = max((tp->max_window>>1), 68U - tp->tcp_header_len);
 
         /* And store cached results */
-        tp->pmtu_cookie = pmtu;
+        icsk->icsk_pmtu_cookie = pmtu;
         tp->mss_cache = mss_now;
 
         return mss_now;
@@ -694,7 +763,7 @@ unsigned int tcp_current_mss(struct sock *sk, int large_allowed)
 
         if (dst) {
                 u32 mtu = dst_mtu(dst);
-                if (mtu != tp->pmtu_cookie)
+                if (mtu != inet_csk(sk)->icsk_pmtu_cookie)
                         mss_now = tcp_sync_mss(sk, mtu);
         }
 
@@ -705,9 +774,10 @@ unsigned int tcp_current_mss(struct sock *sk, int large_allowed)
         xmit_size_goal = mss_now;
 
         if (doing_tso) {
-                xmit_size_goal = 65535 -
-                        tp->af_specific->net_header_len -
-                        tp->ext_header_len - tp->tcp_header_len;
+                xmit_size_goal = (65535 -
+                                  inet_csk(sk)->icsk_af_ops->net_header_len -
+                                  inet_csk(sk)->icsk_ext_hdr_len -
+                                  tp->tcp_header_len);
 
                 if (tp->max_window &&
                     (xmit_size_goal > (tp->max_window >> 1)))
@@ -723,7 +793,7 @@ unsigned int tcp_current_mss(struct sock *sk, int large_allowed)
 
 /* Congestion window validation. (RFC2861) */
 
-static inline void tcp_cwnd_validate(struct sock *sk, struct tcp_sock *tp)
+static void tcp_cwnd_validate(struct sock *sk, struct tcp_sock *tp)
 {
         __u32 packets_out = tp->packets_out;
 
@@ -772,7 +842,7 @@ static inline unsigned int tcp_cwnd_test(struct tcp_sock *tp, struct sk_buff *sk
 /* This must be invoked the first time we consider transmitting
  * SKB onto the wire.
  */
-static inline int tcp_init_tso_segs(struct sock *sk, struct sk_buff *skb, unsigned int mss_now)
+static int tcp_init_tso_segs(struct sock *sk, struct sk_buff *skb, unsigned int mss_now)
 {
         int tso_segs = tcp_skb_pcount(skb);
 
@@ -1422,7 +1492,7 @@ int tcp_retransmit_skb(struct sock *sk, struct sk_buff *skb)
            (sysctl_tcp_retrans_collapse != 0))
                 tcp_retrans_try_collapse(sk, skb, cur_mss);
 
-        if(tp->af_specific->rebuild_header(sk))
+        if (inet_csk(sk)->icsk_af_ops->rebuild_header(sk))
                 return -EHOSTUNREACH; /* Routing failure or similar. */
 
         /* Some Solaris stacks overoptimize and ignore the FIN on a
@@ -1793,7 +1863,7 @@ struct sk_buff * tcp_make_synack(struct sock *sk, struct dst_entry *dst,
 /* 
  * Do all connect socket setups that can be done AF independent.
  */ 
-static inline void tcp_connect_init(struct sock *sk)
+static void tcp_connect_init(struct sock *sk)
 {
         struct dst_entry *dst = __sk_dst_get(sk);
         struct tcp_sock *tp = tcp_sk(sk);
diff --git a/net/ipv4/tcp_vegas.c b/net/ipv4/tcp_vegas.c
index 13e7e6e8df16..3b7403495052 100644
--- a/net/ipv4/tcp_vegas.c
+++ b/net/ipv4/tcp_vegas.c
@@ -330,6 +330,10 @@ static void tcp_vegas_cong_avoid(struct sock *sk, u32 ack,
                 vegas->cntRTT = 0;
                 vegas->minRTT = 0x7fffffff;
         }
+        /* Use normal slow start */
+        else if (tp->snd_cwnd <= tp->snd_ssthresh) 
+                tcp_slow_start(tp);
+        
 }
 
 /* Extract info for Tcp socket info provided via netlink. */
diff --git a/net/ipv4/udp.c b/net/ipv4/udp.c
index 2422a5f7195d..223abaa72bc5 100644
--- a/net/ipv4/udp.c
+++ b/net/ipv4/udp.c
@@ -86,6 +86,7 @@
 #include <linux/module.h>
 #include <linux/socket.h>
 #include <linux/sockios.h>
+#include <linux/igmp.h>
 #include <linux/in.h>
 #include <linux/errno.h>
 #include <linux/timer.h>
@@ -846,20 +847,7 @@ out:
 csum_copy_err:
         UDP_INC_STATS_BH(UDP_MIB_INERRORS);
 
-        /* Clear queue. */
-        if (flags&MSG_PEEK) {
-                int clear = 0;
-                spin_lock_bh(&sk->sk_receive_queue.lock);
-                if (skb == skb_peek(&sk->sk_receive_queue)) {
-                        __skb_unlink(skb, &sk->sk_receive_queue);
-                        clear = 1;
-                }
-                spin_unlock_bh(&sk->sk_receive_queue.lock);
-                if (clear)
-                        kfree_skb(skb);
-        }
-
-        skb_free_datagram(sk, skb);
+        skb_kill_datagram(sk, skb, flags);
 
         if (noblock)
                 return -EAGAIN; 
@@ -1094,7 +1082,7 @@ static int udp_v4_mcast_deliver(struct sk_buff *skb, struct udphdr *uh,
  * Otherwise, csum completion requires chacksumming packet body,
  * including udp header and folding it to skb->csum.
  */
-static int udp_checksum_init(struct sk_buff *skb, struct udphdr *uh,
+static void udp_checksum_init(struct sk_buff *skb, struct udphdr *uh,
                              unsigned short ulen, u32 saddr, u32 daddr)
 {
         if (uh->check == 0) {
@@ -1108,7 +1096,6 @@ static int udp_checksum_init(struct sk_buff *skb, struct udphdr *uh,
         /* Probably, we should checksum udp header (it should be in cache
          * in any case) and data in tiny packets (< rx copybreak).
          */
-        return 0;
 }
 
 /*
@@ -1141,8 +1128,7 @@ int udp_rcv(struct sk_buff *skb)
         if (pskb_trim_rcsum(skb, ulen))
                 goto short_packet;
 
-        if (udp_checksum_init(skb, uh, ulen, saddr, daddr) < 0)
-                goto csum_error;
+        udp_checksum_init(skb, uh, ulen, saddr, daddr);
 
         if(rt->rt_flags & (RTCF_BROADCAST|RTCF_MULTICAST))
                 return udp_v4_mcast_deliver(skb, uh, saddr, daddr);
diff --git a/net/ipv6/Makefile b/net/ipv6/Makefile
index 6460eec834b7..9601fd7f9d66 100644
--- a/net/ipv6/Makefile
+++ b/net/ipv6/Makefile
@@ -8,7 +8,8 @@ ipv6-objs :=	af_inet6.o anycast.o ip6_output.o ip6_input.o addrconf.o sit.o \
                 route.o ip6_fib.o ipv6_sockglue.o ndisc.o udp.o raw.o \
                 protocol.o icmp.o mcast.o reassembly.o tcp_ipv6.o \
                 exthdrs.o sysctl_net_ipv6.o datagram.o proc.o \
-                ip6_flowlabel.o ipv6_syms.o netfilter.o
+                ip6_flowlabel.o ipv6_syms.o netfilter.o \
+                inet6_connection_sock.o
 
 ipv6-$(CONFIG_XFRM) += xfrm6_policy.o xfrm6_state.o xfrm6_input.o \
         xfrm6_output.o
diff --git a/net/ipv6/addrconf.c b/net/ipv6/addrconf.c
index a60585fd85ad..704fb73e6c5f 100644
--- a/net/ipv6/addrconf.c
+++ b/net/ipv6/addrconf.c
@@ -1195,7 +1195,7 @@ struct inet6_ifaddr * ipv6_get_ifaddr(struct in6_addr *addr, struct net_device *
 int ipv6_rcv_saddr_equal(const struct sock *sk, const struct sock *sk2)
 {
         const struct in6_addr *sk_rcv_saddr6 = &inet6_sk(sk)->rcv_saddr;
-        const struct in6_addr *sk2_rcv_saddr6 = tcp_v6_rcv_saddr(sk2);
+        const struct in6_addr *sk2_rcv_saddr6 = inet6_rcv_saddr(sk2);
         u32 sk_rcv_saddr = inet_sk(sk)->rcv_saddr;
         u32 sk2_rcv_saddr = inet_rcv_saddr(sk2);
         int sk_ipv6only = ipv6_only_sock(sk);
diff --git a/net/ipv6/af_inet6.c b/net/ipv6/af_inet6.c
index d9546380fa04..68afc53be662 100644
--- a/net/ipv6/af_inet6.c
+++ b/net/ipv6/af_inet6.c
@@ -167,6 +167,7 @@ lookup_protocol:
                 sk->sk_reuse = 1;
 
         inet = inet_sk(sk);
+        inet->is_icsk = INET_PROTOSW_ICSK & answer_flags;
 
         if (SOCK_RAW == sock->type) {
                 inet->num = protocol;
@@ -389,6 +390,8 @@ int inet6_destroy_sock(struct sock *sk)
         return 0;
 }
 
+EXPORT_SYMBOL_GPL(inet6_destroy_sock);
+
 /*
  *      This does both peername and sockname.
  */
@@ -431,7 +434,6 @@ int inet6_getname(struct socket *sock, struct sockaddr *uaddr,
 int inet6_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg)
 {
         struct sock *sk = sock->sk;
-        int err = -EINVAL;
 
         switch(cmd) 
         {
@@ -450,16 +452,15 @@ int inet6_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg)
         case SIOCSIFDSTADDR:
                 return addrconf_set_dstaddr((void __user *) arg);
         default:
-                if (!sk->sk_prot->ioctl ||
-                    (err = sk->sk_prot->ioctl(sk, cmd, arg)) == -ENOIOCTLCMD)
-                        return(dev_ioctl(cmd,(void __user *) arg));             
-                return err;
+                if (!sk->sk_prot->ioctl)
+                        return -ENOIOCTLCMD;
+                return sk->sk_prot->ioctl(sk, cmd, arg);
         }
         /*NOTREACHED*/
         return(0);
 }
 
-struct proto_ops inet6_stream_ops = {
+const struct proto_ops inet6_stream_ops = {
         .family =       PF_INET6,
         .owner =        THIS_MODULE,
         .release =      inet6_release,
@@ -480,7 +481,7 @@ struct proto_ops inet6_stream_ops = {
         .sendpage =     tcp_sendpage
 };
 
-struct proto_ops inet6_dgram_ops = {
+const struct proto_ops inet6_dgram_ops = {
         .family =       PF_INET6,
         .owner =        THIS_MODULE,
         .release =      inet6_release,
@@ -508,7 +509,7 @@ static struct net_proto_family inet6_family_ops = {
 };
 
 /* Same as inet6_dgram_ops, sans udp_poll.  */
-static struct proto_ops inet6_sockraw_ops = {
+static const struct proto_ops inet6_sockraw_ops = {
         .family =       PF_INET6,
         .owner =        THIS_MODULE,
         .release =      inet6_release,
@@ -609,6 +610,79 @@ inet6_unregister_protosw(struct inet_protosw *p)
         }
 }
 
+int inet6_sk_rebuild_header(struct sock *sk)
+{
+        int err;
+        struct dst_entry *dst;
+        struct ipv6_pinfo *np = inet6_sk(sk);
+
+        dst = __sk_dst_check(sk, np->dst_cookie);
+
+        if (dst == NULL) {
+                struct inet_sock *inet = inet_sk(sk);
+                struct in6_addr *final_p = NULL, final;
+                struct flowi fl;
+
+                memset(&fl, 0, sizeof(fl));
+                fl.proto = sk->sk_protocol;
+                ipv6_addr_copy(&fl.fl6_dst, &np->daddr);
+                ipv6_addr_copy(&fl.fl6_src, &np->saddr);
+                fl.fl6_flowlabel = np->flow_label;
+                fl.oif = sk->sk_bound_dev_if;
+                fl.fl_ip_dport = inet->dport;
+                fl.fl_ip_sport = inet->sport;
+
+                if (np->opt && np->opt->srcrt) {
+                        struct rt0_hdr *rt0 = (struct rt0_hdr *) np->opt->srcrt;
+                        ipv6_addr_copy(&final, &fl.fl6_dst);
+                        ipv6_addr_copy(&fl.fl6_dst, rt0->addr);
+                        final_p = &final;
+                }
+
+                err = ip6_dst_lookup(sk, &dst, &fl);
+                if (err) {
+                        sk->sk_route_caps = 0;
+                        return err;
+                }
+                if (final_p)
+                        ipv6_addr_copy(&fl.fl6_dst, final_p);
+
+                if ((err = xfrm_lookup(&dst, &fl, sk, 0)) < 0) {
+                        sk->sk_err_soft = -err;
+                        return err;
+                }
+
+                ip6_dst_store(sk, dst, NULL);
+                sk->sk_route_caps = dst->dev->features &
+                        ~(NETIF_F_IP_CSUM | NETIF_F_TSO);
+        }
+
+        return 0;
+}
+
+EXPORT_SYMBOL_GPL(inet6_sk_rebuild_header);
+
+int ipv6_opt_accepted(struct sock *sk, struct sk_buff *skb)
+{
+        struct ipv6_pinfo *np = inet6_sk(sk);
+        struct inet6_skb_parm *opt = IP6CB(skb);
+
+        if (np->rxopt.all) {
+                if ((opt->hop && (np->rxopt.bits.hopopts ||
+                                  np->rxopt.bits.ohopopts)) ||
+                    ((IPV6_FLOWINFO_MASK & *(u32*)skb->nh.raw) &&
+                     np->rxopt.bits.rxflow) ||
+                    (opt->srcrt && (np->rxopt.bits.srcrt ||
+                     np->rxopt.bits.osrcrt)) ||
+                    ((opt->dst1 || opt->dst0) &&
+                     (np->rxopt.bits.dstopts || np->rxopt.bits.odstopts)))
+                        return 1;
+        }
+        return 0;
+}
+
+EXPORT_SYMBOL_GPL(ipv6_opt_accepted);
+
 int
 snmp6_mib_init(void *ptr[2], size_t mibsize, size_t mibalign)
 {
diff --git a/net/ipv6/ah6.c b/net/ipv6/ah6.c
index f3629730eb15..13cc7f895583 100644
--- a/net/ipv6/ah6.c
+++ b/net/ipv6/ah6.c
@@ -33,6 +33,7 @@
 #include <linux/string.h>
 #include <net/icmp.h>
 #include <net/ipv6.h>
+#include <net/protocol.h>
 #include <net/xfrm.h>
 #include <asm/scatterlist.h>
 
diff --git a/net/ipv6/esp6.c b/net/ipv6/esp6.c
index 8bfbe9970793..6de8ee1a5ad9 100644
--- a/net/ipv6/esp6.c
+++ b/net/ipv6/esp6.c
@@ -36,6 +36,7 @@
 #include <linux/random.h>
 #include <net/icmp.h>
 #include <net/ipv6.h>
+#include <net/protocol.h>
 #include <linux/icmpv6.h>
 
 static int esp6_output(struct xfrm_state *x, struct sk_buff *skb)
diff --git a/net/ipv6/exthdrs.c b/net/ipv6/exthdrs.c
index be6faf311387..113374dc342c 100644
--- a/net/ipv6/exthdrs.c
+++ b/net/ipv6/exthdrs.c
@@ -413,6 +413,8 @@ ipv6_invert_rthdr(struct sock *sk, struct ipv6_rt_hdr *hdr)
         return opt;
 }
 
+EXPORT_SYMBOL_GPL(ipv6_invert_rthdr);
+
 /**********************************
   Hop-by-hop options.
  **********************************/
@@ -579,6 +581,8 @@ ipv6_dup_options(struct sock *sk, struct ipv6_txoptions *opt)
         return opt2;
 }
 
+EXPORT_SYMBOL_GPL(ipv6_dup_options);
+
 static int ipv6_renew_option(void *ohdr,
                              struct ipv6_opt_hdr __user *newopt, int newoptlen,
                              int inherit,
diff --git a/net/ipv6/inet6_connection_sock.c b/net/ipv6/inet6_connection_sock.c
new file mode 100644
index 000000000000..792f90f0f9ec
--- /dev/null
+++ b/net/ipv6/inet6_connection_sock.c
@@ -0,0 +1,199 @@
+/*
+ * 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.
+ *
+ *             Support for INET6 connection oriented protocols.
+ *
+ * Authors:    See the TCPv6 sources
+ *
+ *             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.
+ */
+
+#include <linux/config.h>
+#include <linux/module.h>
+#include <linux/in6.h>
+#include <linux/ipv6.h>
+#include <linux/jhash.h>
+
+#include <net/addrconf.h>
+#include <net/inet_connection_sock.h>
+#include <net/inet_ecn.h>
+#include <net/inet_hashtables.h>
+#include <net/ip6_route.h>
+#include <net/sock.h>
+
+int inet6_csk_bind_conflict(const struct sock *sk,
+                            const struct inet_bind_bucket *tb)
+{
+        const struct sock *sk2;
+        const struct hlist_node *node;
+
+        /* We must walk the whole port owner list in this case. -DaveM */
+        sk_for_each_bound(sk2, node, &tb->owners) {
+                if (sk != sk2 &&
+                    (!sk->sk_bound_dev_if ||
+                     !sk2->sk_bound_dev_if ||
+                     sk->sk_bound_dev_if == sk2->sk_bound_dev_if) &&
+                    (!sk->sk_reuse || !sk2->sk_reuse ||
+                     sk2->sk_state == TCP_LISTEN) &&
+                     ipv6_rcv_saddr_equal(sk, sk2))
+                        break;
+        }
+
+        return node != NULL;
+}
+
+EXPORT_SYMBOL_GPL(inet6_csk_bind_conflict);
+
+/*
+ * request_sock (formerly open request) hash tables.
+ */
+static u32 inet6_synq_hash(const struct in6_addr *raddr, const u16 rport,
+                           const u32 rnd, const u16 synq_hsize)
+{
+        u32 a = raddr->s6_addr32[0];
+        u32 b = raddr->s6_addr32[1];
+        u32 c = raddr->s6_addr32[2];
+
+        a += JHASH_GOLDEN_RATIO;
+        b += JHASH_GOLDEN_RATIO;
+        c += rnd;
+        __jhash_mix(a, b, c);
+
+        a += raddr->s6_addr32[3];
+        b += (u32)rport;
+        __jhash_mix(a, b, c);
+
+        return c & (synq_hsize - 1);
+}
+
+struct request_sock *inet6_csk_search_req(const struct sock *sk,
+                                          struct request_sock ***prevp,
+                                          const __u16 rport,
+                                          const struct in6_addr *raddr,
+                                          const struct in6_addr *laddr,
+                                          const int iif)
+{
+        const struct inet_connection_sock *icsk = inet_csk(sk);
+        struct listen_sock *lopt = icsk->icsk_accept_queue.listen_opt;
+        struct request_sock *req, **prev;
+
+        for (prev = &lopt->syn_table[inet6_synq_hash(raddr, rport,
+                                                     lopt->hash_rnd,
+                                                     lopt->nr_table_entries)];
+             (req = *prev) != NULL;
+             prev = &req->dl_next) {
+                const struct inet6_request_sock *treq = inet6_rsk(req);
+
+                if (inet_rsk(req)->rmt_port == rport &&
+                    req->rsk_ops->family == AF_INET6 &&
+                    ipv6_addr_equal(&treq->rmt_addr, raddr) &&
+                    ipv6_addr_equal(&treq->loc_addr, laddr) &&
+                    (!treq->iif || treq->iif == iif)) {
+                        BUG_TRAP(req->sk == NULL);
+                        *prevp = prev;
+                        return req;
+                }
+        }
+
+        return NULL;
+}
+
+EXPORT_SYMBOL_GPL(inet6_csk_search_req);
+
+void inet6_csk_reqsk_queue_hash_add(struct sock *sk,
+                                    struct request_sock *req,
+                                    const unsigned long timeout)
+{
+        struct inet_connection_sock *icsk = inet_csk(sk);
+        struct listen_sock *lopt = icsk->icsk_accept_queue.listen_opt;
+        const u32 h = inet6_synq_hash(&inet6_rsk(req)->rmt_addr,
+                                      inet_rsk(req)->rmt_port,
+                                      lopt->hash_rnd, lopt->nr_table_entries);
+
+        reqsk_queue_hash_req(&icsk->icsk_accept_queue, h, req, timeout);
+        inet_csk_reqsk_queue_added(sk, timeout);
+}
+
+EXPORT_SYMBOL_GPL(inet6_csk_reqsk_queue_hash_add);
+
+void inet6_csk_addr2sockaddr(struct sock *sk, struct sockaddr * uaddr)
+{
+        struct ipv6_pinfo *np = inet6_sk(sk);
+        struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *) uaddr;
+
+        sin6->sin6_family = AF_INET6;
+        ipv6_addr_copy(&sin6->sin6_addr, &np->daddr);
+        sin6->sin6_port = inet_sk(sk)->dport;
+        /* We do not store received flowlabel for TCP */
+        sin6->sin6_flowinfo = 0;
+        sin6->sin6_scope_id = 0;
+        if (sk->sk_bound_dev_if &&
+            ipv6_addr_type(&sin6->sin6_addr) & IPV6_ADDR_LINKLOCAL)
+                sin6->sin6_scope_id = sk->sk_bound_dev_if;
+}
+
+EXPORT_SYMBOL_GPL(inet6_csk_addr2sockaddr);
+
+int inet6_csk_xmit(struct sk_buff *skb, int ipfragok)
+{
+        struct sock *sk = skb->sk;
+        struct inet_sock *inet = inet_sk(sk);
+        struct ipv6_pinfo *np = inet6_sk(sk);
+        struct flowi fl;
+        struct dst_entry *dst;
+        struct in6_addr *final_p = NULL, final;
+
+        memset(&fl, 0, sizeof(fl));
+        fl.proto = sk->sk_protocol;
+        ipv6_addr_copy(&fl.fl6_dst, &np->daddr);
+        ipv6_addr_copy(&fl.fl6_src, &np->saddr);
+        fl.fl6_flowlabel = np->flow_label;
+        IP6_ECN_flow_xmit(sk, fl.fl6_flowlabel);
+        fl.oif = sk->sk_bound_dev_if;
+        fl.fl_ip_sport = inet->sport;
+        fl.fl_ip_dport = inet->dport;
+
+        if (np->opt && np->opt->srcrt) {
+                struct rt0_hdr *rt0 = (struct rt0_hdr *)np->opt->srcrt;
+                ipv6_addr_copy(&final, &fl.fl6_dst);
+                ipv6_addr_copy(&fl.fl6_dst, rt0->addr);
+                final_p = &final;
+        }
+
+        dst = __sk_dst_check(sk, np->dst_cookie);
+
+        if (dst == NULL) {
+                int err = ip6_dst_lookup(sk, &dst, &fl);
+
+                if (err) {
+                        sk->sk_err_soft = -err;
+                        return err;
+                }
+
+                if (final_p)
+                        ipv6_addr_copy(&fl.fl6_dst, final_p);
+
+                if ((err = xfrm_lookup(&dst, &fl, sk, 0)) < 0) {
+                        sk->sk_route_caps = 0;
+                        return err;
+                }
+
+                ip6_dst_store(sk, dst, NULL);
+                sk->sk_route_caps = dst->dev->features &
+                        ~(NETIF_F_IP_CSUM | NETIF_F_TSO);
+        }
+
+        skb->dst = dst_clone(dst);
+
+        /* Restore final destination back after routing done */
+        ipv6_addr_copy(&fl.fl6_dst, &np->daddr);
+
+        return ip6_xmit(sk, skb, &fl, np->opt, 0);
+}
+
+EXPORT_SYMBOL_GPL(inet6_csk_xmit);
diff --git a/net/ipv6/inet6_hashtables.c b/net/ipv6/inet6_hashtables.c
index 01d5f46d4e40..4154f3a8b6cf 100644
--- a/net/ipv6/inet6_hashtables.c
+++ b/net/ipv6/inet6_hashtables.c
@@ -5,7 +5,8 @@
  *
  *              Generic INET6 transport hashtables
  *
- * Authors:     Lotsa people, from code originally in tcp
+ * Authors:     Lotsa people, from code originally in tcp, generalised here
+ *              by Arnaldo Carvalho de Melo <acme@mandriva.com>
  *
  *      This program is free software; you can redistribute it and/or
  *      modify it under the terms of the GNU General Public License
@@ -14,12 +15,13 @@
  */
 
 #include <linux/config.h>
-
 #include <linux/module.h>
+#include <linux/random.h>
 
 #include <net/inet_connection_sock.h>
 #include <net/inet_hashtables.h>
 #include <net/inet6_hashtables.h>
+#include <net/ip.h>
 
 struct sock *inet6_lookup_listener(struct inet_hashinfo *hashinfo,
                                    const struct in6_addr *daddr,
@@ -79,3 +81,180 @@ struct sock *inet6_lookup(struct inet_hashinfo *hashinfo,
 }
 
 EXPORT_SYMBOL_GPL(inet6_lookup);
+
+static int __inet6_check_established(struct inet_timewait_death_row *death_row,
+                                     struct sock *sk, const __u16 lport,
+                                     struct inet_timewait_sock **twp)
+{
+        struct inet_hashinfo *hinfo = death_row->hashinfo;
+        const struct inet_sock *inet = inet_sk(sk);
+        const struct ipv6_pinfo *np = inet6_sk(sk);
+        const struct in6_addr *daddr = &np->rcv_saddr;
+        const struct in6_addr *saddr = &np->daddr;
+        const int dif = sk->sk_bound_dev_if;
+        const u32 ports = INET_COMBINED_PORTS(inet->dport, lport);
+        const unsigned int hash = inet6_ehashfn(daddr, inet->num, saddr,
+                                                inet->dport);
+        struct inet_ehash_bucket *head = inet_ehash_bucket(hinfo, hash);
+        struct sock *sk2;
+        const struct hlist_node *node;
+        struct inet_timewait_sock *tw;
+
+        prefetch(head->chain.first);
+        write_lock(&head->lock);
+
+        /* Check TIME-WAIT sockets first. */
+        sk_for_each(sk2, node, &(head + hinfo->ehash_size)->chain) {
+                const struct inet6_timewait_sock *tw6 = inet6_twsk(sk2);
+
+                tw = inet_twsk(sk2);
+
+                if(*((__u32 *)&(tw->tw_dport)) == ports          &&
+                   sk2->sk_family              == PF_INET6       &&
+                   ipv6_addr_equal(&tw6->tw_v6_daddr, saddr)     &&
+                   ipv6_addr_equal(&tw6->tw_v6_rcv_saddr, daddr) &&
+                   sk2->sk_bound_dev_if == sk->sk_bound_dev_if) {
+                        if (twsk_unique(sk, sk2, twp))
+                                goto unique;
+                        else
+                                goto not_unique;
+                }
+        }
+        tw = NULL;
+
+        /* And established part... */
+        sk_for_each(sk2, node, &head->chain) {
+                if (INET6_MATCH(sk2, hash, saddr, daddr, ports, dif))
+                        goto not_unique;
+        }
+
+unique:
+        BUG_TRAP(sk_unhashed(sk));
+        __sk_add_node(sk, &head->chain);
+        sk->sk_hash = hash;
+        sock_prot_inc_use(sk->sk_prot);
+        write_unlock(&head->lock);
+
+        if (twp != NULL) {
+                *twp = tw;
+                NET_INC_STATS_BH(LINUX_MIB_TIMEWAITRECYCLED);
+        } else if (tw != NULL) {
+                /* Silly. Should hash-dance instead... */
+                inet_twsk_deschedule(tw, death_row);
+                NET_INC_STATS_BH(LINUX_MIB_TIMEWAITRECYCLED);
+
+                inet_twsk_put(tw);
+        }
+        return 0;
+
+not_unique:
+        write_unlock(&head->lock);
+        return -EADDRNOTAVAIL;
+}
+
+static inline u32 inet6_sk_port_offset(const struct sock *sk)
+{
+        const struct inet_sock *inet = inet_sk(sk);
+        const struct ipv6_pinfo *np = inet6_sk(sk);
+        return secure_ipv6_port_ephemeral(np->rcv_saddr.s6_addr32,
+                                          np->daddr.s6_addr32,
+                                          inet->dport);
+}
+
+int inet6_hash_connect(struct inet_timewait_death_row *death_row,
+                       struct sock *sk)
+{
+        struct inet_hashinfo *hinfo = death_row->hashinfo;
+        const unsigned short snum = inet_sk(sk)->num;
+        struct inet_bind_hashbucket *head;
+        struct inet_bind_bucket *tb;
+        int ret;
+
+        if (snum == 0) {
+                const int low = sysctl_local_port_range[0];
+                const int high = sysctl_local_port_range[1];
+                const int range = high - low;
+                int i, port;
+                static u32 hint;
+                const u32 offset = hint + inet6_sk_port_offset(sk);
+                struct hlist_node *node;
+                struct inet_timewait_sock *tw = NULL;
+
+                local_bh_disable();
+                for (i = 1; i <= range; i++) {
+                        port = low + (i + offset) % range;
+                        head = &hinfo->bhash[inet_bhashfn(port, hinfo->bhash_size)];
+                        spin_lock(&head->lock);
+
+                        /* Does not bother with rcv_saddr checks,
+                         * because the established check is already
+                         * unique enough.
+                         */
+                        inet_bind_bucket_for_each(tb, node, &head->chain) {
+                                if (tb->port == port) {
+                                        BUG_TRAP(!hlist_empty(&tb->owners));
+                                        if (tb->fastreuse >= 0)
+                                                goto next_port;
+                                        if (!__inet6_check_established(death_row,
+                                                                       sk, port,
+                                                                       &tw))
+                                                goto ok;
+                                        goto next_port;
+                                }
+                        }
+
+                        tb = inet_bind_bucket_create(hinfo->bind_bucket_cachep,
+                                                     head, port);
+                        if (!tb) {
+                                spin_unlock(&head->lock);
+                                break;
+                        }
+                        tb->fastreuse = -1;
+                        goto ok;
+
+                next_port:
+                        spin_unlock(&head->lock);
+                }
+                local_bh_enable();
+
+                return -EADDRNOTAVAIL;
+
+ok:
+                hint += i;
+
+                /* Head lock still held and bh's disabled */
+                inet_bind_hash(sk, tb, port);
+                if (sk_unhashed(sk)) {
+                        inet_sk(sk)->sport = htons(port);
+                        __inet6_hash(hinfo, sk);
+                }
+                spin_unlock(&head->lock);
+
+                if (tw) {
+                        inet_twsk_deschedule(tw, death_row);
+                        inet_twsk_put(tw);
+                }
+
+                ret = 0;
+                goto out;
+        }
+
+        head = &hinfo->bhash[inet_bhashfn(snum, hinfo->bhash_size)];
+        tb   = inet_csk(sk)->icsk_bind_hash;
+        spin_lock_bh(&head->lock);
+
+        if (sk_head(&tb->owners) == sk && sk->sk_bind_node.next == NULL) {
+                __inet6_hash(hinfo, sk);
+                spin_unlock_bh(&head->lock);
+                return 0;
+        } else {
+                spin_unlock(&head->lock);
+                /* No definite answer... Walk to established hash table */
+                ret = __inet6_check_established(death_row, sk, snum, NULL);
+out:
+                local_bh_enable();
+                return ret;
+        }
+}
+
+EXPORT_SYMBOL_GPL(inet6_hash_connect);
diff --git a/net/ipv6/ip6_flowlabel.c b/net/ipv6/ip6_flowlabel.c
index 1cf02765fb5c..89d12b4817a9 100644
--- a/net/ipv6/ip6_flowlabel.c
+++ b/net/ipv6/ip6_flowlabel.c
@@ -200,6 +200,8 @@ struct ip6_flowlabel * fl6_sock_lookup(struct sock *sk, u32 label)
         return NULL;
 }
 
+EXPORT_SYMBOL_GPL(fl6_sock_lookup);
+
 void fl6_free_socklist(struct sock *sk)
 {
         struct ipv6_pinfo *np = inet6_sk(sk);
diff --git a/net/ipv6/ip6_output.c b/net/ipv6/ip6_output.c
index 8523c76ebf76..b4c4beba0ede 100644
--- a/net/ipv6/ip6_output.c
+++ b/net/ipv6/ip6_output.c
@@ -775,6 +775,8 @@ out_err_release:
         return err;
 }
 
+EXPORT_SYMBOL_GPL(ip6_dst_lookup);
+
 static inline int ip6_ufo_append_data(struct sock *sk,
                         int getfrag(void *from, char *to, int offset, int len,
                         int odd, struct sk_buff *skb),
diff --git a/net/ipv6/ipcomp6.c b/net/ipv6/ipcomp6.c
index 55917fb17094..626dd39685f2 100644
--- a/net/ipv6/ipcomp6.c
+++ b/net/ipv6/ipcomp6.c
@@ -47,6 +47,7 @@
 #include <linux/rtnetlink.h>
 #include <net/icmp.h>
 #include <net/ipv6.h>
+#include <net/protocol.h>
 #include <linux/ipv6.h>
 #include <linux/icmpv6.h>
 
diff --git a/net/ipv6/ipv6_sockglue.c b/net/ipv6/ipv6_sockglue.c
index 3620718defe6..c63868dd2ca2 100644
--- a/net/ipv6/ipv6_sockglue.c
+++ b/net/ipv6/ipv6_sockglue.c
@@ -163,17 +163,17 @@ int ipv6_setsockopt(struct sock *sk, int level, int optname,
                         sk_refcnt_debug_dec(sk);
 
                         if (sk->sk_protocol == IPPROTO_TCP) {
-                                struct tcp_sock *tp = tcp_sk(sk);
+                                struct inet_connection_sock *icsk = inet_csk(sk);
 
                                 local_bh_disable();
                                 sock_prot_dec_use(sk->sk_prot);
                                 sock_prot_inc_use(&tcp_prot);
                                 local_bh_enable();
                                 sk->sk_prot = &tcp_prot;
-                                tp->af_specific = &ipv4_specific;
+                                icsk->icsk_af_ops = &ipv4_specific;
                                 sk->sk_socket->ops = &inet_stream_ops;
                                 sk->sk_family = PF_INET;
-                                tcp_sync_mss(sk, tp->pmtu_cookie);
+                                tcp_sync_mss(sk, icsk->icsk_pmtu_cookie);
                         } else {
                                 local_bh_disable();
                                 sock_prot_dec_use(sk->sk_prot);
@@ -317,14 +317,15 @@ int ipv6_setsockopt(struct sock *sk, int level, int optname,
                 }
 
                 retv = 0;
-                if (sk->sk_type == SOCK_STREAM) {
+                if (inet_sk(sk)->is_icsk) {
                         if (opt) {
-                                struct tcp_sock *tp = tcp_sk(sk);
+                                struct inet_connection_sock *icsk = inet_csk(sk);
                                 if (!((1 << sk->sk_state) &
                                       (TCPF_LISTEN | TCPF_CLOSE))
                                     && inet_sk(sk)->daddr != LOOPBACK4_IPV6) {
-                                        tp->ext_header_len = opt->opt_flen + opt->opt_nflen;
-                                        tcp_sync_mss(sk, tp->pmtu_cookie);
+                                        icsk->icsk_ext_hdr_len =
+                                                opt->opt_flen + opt->opt_nflen;
+                                        icsk->icsk_sync_mss(sk, icsk->icsk_pmtu_cookie);
                                 }
                         }
                         opt = xchg(&np->opt, opt);
@@ -380,14 +381,15 @@ sticky_done:
                         goto done;
 update:
                 retv = 0;
-                if (sk->sk_type == SOCK_STREAM) {
+                if (inet_sk(sk)->is_icsk) {
                         if (opt) {
-                                struct tcp_sock *tp = tcp_sk(sk);
+                                struct inet_connection_sock *icsk = inet_csk(sk);
                                 if (!((1 << sk->sk_state) &
                                       (TCPF_LISTEN | TCPF_CLOSE))
                                     && inet_sk(sk)->daddr != LOOPBACK4_IPV6) {
-                                        tp->ext_header_len = opt->opt_flen + opt->opt_nflen;
-                                        tcp_sync_mss(sk, tp->pmtu_cookie);
+                                        icsk->icsk_ext_hdr_len =
+                                                opt->opt_flen + opt->opt_nflen;
+                                        icsk->icsk_sync_mss(sk, icsk->icsk_pmtu_cookie);
                                 }
                         }
                         opt = xchg(&np->opt, opt);
diff --git a/net/ipv6/mcast.c b/net/ipv6/mcast.c
index f829a4ad3ccc..1cf305a9f8dd 100644
--- a/net/ipv6/mcast.c
+++ b/net/ipv6/mcast.c
@@ -224,7 +224,7 @@ int ipv6_sock_mc_join(struct sock *sk, int ifindex, struct in6_addr *addr)
 
         mc_lst->ifindex = dev->ifindex;
         mc_lst->sfmode = MCAST_EXCLUDE;
-        mc_lst->sflock = RW_LOCK_UNLOCKED;
+        rwlock_init(&mc_lst->sflock);
         mc_lst->sflist = NULL;
 
         /*
diff --git a/net/ipv6/netfilter/ip6_tables.c b/net/ipv6/netfilter/ip6_tables.c
index 95d469271c4d..ea43ef1d94a7 100644
--- a/net/ipv6/netfilter/ip6_tables.c
+++ b/net/ipv6/netfilter/ip6_tables.c
@@ -15,6 +15,7 @@
  *      - new extension header parser code
  */
 #include <linux/config.h>
+#include <linux/in.h>
 #include <linux/skbuff.h>
 #include <linux/kmod.h>
 #include <linux/vmalloc.h>
@@ -86,11 +87,6 @@ static DECLARE_MUTEX(ip6t_mutex);
    context stops packets coming through and allows user context to read
    the counters or update the rules.
 
-   To be cache friendly on SMP, we arrange them like so:
-   [ n-entries ]
-   ... cache-align padding ...
-   [ n-entries ]
-
    Hence the start of any table is given by get_table() below.  */
 
 /* The table itself */
@@ -108,20 +104,15 @@ struct ip6t_table_info
         unsigned int underflow[NF_IP6_NUMHOOKS];
 
         /* ip6t_entry tables: one per CPU */
-        char entries[0] ____cacheline_aligned;
+        void *entries[NR_CPUS];
 };
 
 static LIST_HEAD(ip6t_target);
 static LIST_HEAD(ip6t_match);
 static LIST_HEAD(ip6t_tables);
+#define SET_COUNTER(c,b,p) do { (c).bcnt = (b); (c).pcnt = (p); } while(0)
 #define ADD_COUNTER(c,b,p) do { (c).bcnt += (b); (c).pcnt += (p); } while(0)
 
-#ifdef CONFIG_SMP
-#define TABLE_OFFSET(t,p) (SMP_ALIGN((t)->size)*(p))
-#else
-#define TABLE_OFFSET(t,p) 0
-#endif
-
 #if 0
 #define down(x) do { printk("DOWN:%u:" #x "\n", __LINE__); down(x); } while(0)
 #define down_interruptible(x) ({ int __r; printk("DOWNi:%u:" #x "\n", __LINE__); __r = down_interruptible(x); if (__r != 0) printk("ABORT-DOWNi:%u\n", __LINE__); __r; })
@@ -376,8 +367,7 @@ ip6t_do_table(struct sk_buff **pskb,
 
         read_lock_bh(&table->lock);
         IP_NF_ASSERT(table->valid_hooks & (1 << hook));
-        table_base = (void *)table->private->entries
-                + TABLE_OFFSET(table->private, smp_processor_id());
+        table_base = (void *)table->private->entries[smp_processor_id()];
         e = get_entry(table_base, table->private->hook_entry[hook]);
 
 #ifdef CONFIG_NETFILTER_DEBUG
@@ -649,7 +639,8 @@ unconditional(const struct ip6t_ip6 *ipv6)
 /* Figures out from what hook each rule can be called: returns 0 if
    there are loops.  Puts hook bitmask in comefrom. */
 static int
-mark_source_chains(struct ip6t_table_info *newinfo, unsigned int valid_hooks)
+mark_source_chains(struct ip6t_table_info *newinfo,
+                   unsigned int valid_hooks, void *entry0)
 {
         unsigned int hook;
 
@@ -658,7 +649,7 @@ mark_source_chains(struct ip6t_table_info *newinfo, unsigned int valid_hooks)
         for (hook = 0; hook < NF_IP6_NUMHOOKS; hook++) {
                 unsigned int pos = newinfo->hook_entry[hook];
                 struct ip6t_entry *e
-                        = (struct ip6t_entry *)(newinfo->entries + pos);
+                        = (struct ip6t_entry *)(entry0 + pos);
 
                 if (!(valid_hooks & (1 << hook)))
                         continue;
@@ -708,13 +699,13 @@ mark_source_chains(struct ip6t_table_info *newinfo, unsigned int valid_hooks)
                                                 goto next;
 
                                         e = (struct ip6t_entry *)
-                                                (newinfo->entries + pos);
+                                                (entry0 + pos);
                                 } while (oldpos == pos + e->next_offset);
 
                                 /* Move along one */
                                 size = e->next_offset;
                                 e = (struct ip6t_entry *)
-                                        (newinfo->entries + pos + size);
+                                        (entry0 + pos + size);
                                 e->counters.pcnt = pos;
                                 pos += size;
                         } else {
@@ -731,7 +722,7 @@ mark_source_chains(struct ip6t_table_info *newinfo, unsigned int valid_hooks)
                                         newpos = pos + e->next_offset;
                                 }
                                 e = (struct ip6t_entry *)
-                                        (newinfo->entries + newpos);
+                                        (entry0 + newpos);
                                 e->counters.pcnt = pos;
                                 pos = newpos;
                         }
@@ -941,6 +932,7 @@ static int
 translate_table(const char *name,
                 unsigned int valid_hooks,
                 struct ip6t_table_info *newinfo,
+                void *entry0,
                 unsigned int size,
                 unsigned int number,
                 const unsigned int *hook_entries,
@@ -961,11 +953,11 @@ translate_table(const char *name,
         duprintf("translate_table: size %u\n", newinfo->size);
         i = 0;
         /* Walk through entries, checking offsets. */
-        ret = IP6T_ENTRY_ITERATE(newinfo->entries, newinfo->size,
+        ret = IP6T_ENTRY_ITERATE(entry0, newinfo->size,
                                 check_entry_size_and_hooks,
                                 newinfo,
-                                newinfo->entries,
-                                newinfo->entries + size,
+                                entry0,
+                                entry0 + size,
                                 hook_entries, underflows, &i);
         if (ret != 0)
                 return ret;
@@ -993,27 +985,24 @@ translate_table(const char *name,
                 }
         }
 
-        if (!mark_source_chains(newinfo, valid_hooks))
+        if (!mark_source_chains(newinfo, valid_hooks, entry0))
                 return -ELOOP;
 
         /* Finally, each sanity check must pass */
         i = 0;
-        ret = IP6T_ENTRY_ITERATE(newinfo->entries, newinfo->size,
+        ret = IP6T_ENTRY_ITERATE(entry0, newinfo->size,
                                 check_entry, name, size, &i);
 
         if (ret != 0) {
-                IP6T_ENTRY_ITERATE(newinfo->entries, newinfo->size,
+                IP6T_ENTRY_ITERATE(entry0, newinfo->size,
                                   cleanup_entry, &i);
                 return ret;
         }
 
         /* And one copy for every other CPU */
         for_each_cpu(i) {
-                if (i == 0)
-                        continue;
-                memcpy(newinfo->entries + SMP_ALIGN(newinfo->size) * i,
-                       newinfo->entries,
-                       SMP_ALIGN(newinfo->size));
+                if (newinfo->entries[i] && newinfo->entries[i] != entry0)
+                        memcpy(newinfo->entries[i], entry0, newinfo->size);
         }
 
         return ret;
@@ -1029,15 +1018,12 @@ replace_table(struct ip6t_table *table,
 
 #ifdef CONFIG_NETFILTER_DEBUG
         {
-                struct ip6t_entry *table_base;
-                unsigned int i;
+                int cpu;
 
-                for_each_cpu(i) {
-                        table_base =
-                                (void *)newinfo->entries
-                                + TABLE_OFFSET(newinfo, i);
-
-                        table_base->comefrom = 0xdead57ac;
+                for_each_cpu(cpu) {
+                        struct ip6t_entry *table_base = newinfo->entries[cpu];
+                        if (table_base)
+                                table_base->comefrom = 0xdead57ac;
                 }
         }
 #endif
@@ -1072,16 +1058,44 @@ add_entry_to_counter(const struct ip6t_entry *e,
         return 0;
 }
 
+static inline int
+set_entry_to_counter(const struct ip6t_entry *e,
+                     struct ip6t_counters total[],
+                     unsigned int *i)
+{
+        SET_COUNTER(total[*i], e->counters.bcnt, e->counters.pcnt);
+
+        (*i)++;
+        return 0;
+}
+
 static void
 get_counters(const struct ip6t_table_info *t,
              struct ip6t_counters counters[])
 {
         unsigned int cpu;
         unsigned int i;
+        unsigned int curcpu;
+
+        /* Instead of clearing (by a previous call to memset())
+         * the counters and using adds, we set the counters
+         * with data used by 'current' CPU
+         * We dont care about preemption here.
+         */
+        curcpu = raw_smp_processor_id();
+
+        i = 0;
+        IP6T_ENTRY_ITERATE(t->entries[curcpu],
+                           t->size,
+                           set_entry_to_counter,
+                           counters,
+                           &i);
 
         for_each_cpu(cpu) {
+                if (cpu == curcpu)
+                        continue;
                 i = 0;
-                IP6T_ENTRY_ITERATE(t->entries + TABLE_OFFSET(t, cpu),
+                IP6T_ENTRY_ITERATE(t->entries[cpu],
                                   t->size,
                                   add_entry_to_counter,
                                   counters,
@@ -1098,6 +1112,7 @@ copy_entries_to_user(unsigned int total_size,
         struct ip6t_entry *e;
         struct ip6t_counters *counters;
         int ret = 0;
+        void *loc_cpu_entry;
 
         /* We need atomic snapshot of counters: rest doesn't change
            (other than comefrom, which userspace doesn't care
@@ -1109,13 +1124,13 @@ copy_entries_to_user(unsigned int total_size,
                 return -ENOMEM;
 
         /* First, sum counters... */
-        memset(counters, 0, countersize);
         write_lock_bh(&table->lock);
         get_counters(table->private, counters);
         write_unlock_bh(&table->lock);
 
-        /* ... then copy entire thing from CPU 0... */
-        if (copy_to_user(userptr, table->private->entries, total_size) != 0) {
+        /* choose the copy that is on ourc node/cpu */
+        loc_cpu_entry = table->private->entries[raw_smp_processor_id()];
+        if (copy_to_user(userptr, loc_cpu_entry, total_size) != 0) {
                 ret = -EFAULT;
                 goto free_counters;
         }
@@ -1127,7 +1142,7 @@ copy_entries_to_user(unsigned int total_size,
                 struct ip6t_entry_match *m;
                 struct ip6t_entry_target *t;
 
-                e = (struct ip6t_entry *)(table->private->entries + off);
+                e = (struct ip6t_entry *)(loc_cpu_entry + off);
                 if (copy_to_user(userptr + off
                                  + offsetof(struct ip6t_entry, counters),
                                  &counters[num],
@@ -1196,6 +1211,46 @@ get_entries(const struct ip6t_get_entries *entries,
         return ret;
 }
 
+static void free_table_info(struct ip6t_table_info *info)
+{
+        int cpu;
+        for_each_cpu(cpu) {
+                if (info->size <= PAGE_SIZE)
+                        kfree(info->entries[cpu]);
+                else
+                        vfree(info->entries[cpu]);
+        }
+        kfree(info);
+}
+
+static struct ip6t_table_info *alloc_table_info(unsigned int size)
+{
+        struct ip6t_table_info *newinfo;
+        int cpu;
+
+        newinfo = kzalloc(sizeof(struct ip6t_table_info), GFP_KERNEL);
+        if (!newinfo)
+                return NULL;
+
+        newinfo->size = size;
+
+        for_each_cpu(cpu) {
+                if (size <= PAGE_SIZE)
+                        newinfo->entries[cpu] = kmalloc_node(size,
+                                                        GFP_KERNEL,
+                                                        cpu_to_node(cpu));
+                else
+                        newinfo->entries[cpu] = vmalloc_node(size,
+                                                             cpu_to_node(cpu));
+                if (newinfo->entries[cpu] == NULL) {
+                        free_table_info(newinfo);
+                        return NULL;
+                }
+        }
+
+        return newinfo;
+}
+
 static int
 do_replace(void __user *user, unsigned int len)
 {
@@ -1204,6 +1259,7 @@ do_replace(void __user *user, unsigned int len)
         struct ip6t_table *t;
         struct ip6t_table_info *newinfo, *oldinfo;
         struct ip6t_counters *counters;
+        void *loc_cpu_entry, *loc_cpu_old_entry;
 
         if (copy_from_user(&tmp, user, sizeof(tmp)) != 0)
                 return -EFAULT;
@@ -1212,13 +1268,13 @@ do_replace(void __user *user, unsigned int len)
         if ((SMP_ALIGN(tmp.size) >> PAGE_SHIFT) + 2 > num_physpages)
                 return -ENOMEM;
 
-        newinfo = vmalloc(sizeof(struct ip6t_table_info)
-                          + SMP_ALIGN(tmp.size) *
-                                        (highest_possible_processor_id()+1));
+        newinfo = alloc_table_info(tmp.size);
         if (!newinfo)
                 return -ENOMEM;
 
-        if (copy_from_user(newinfo->entries, user + sizeof(tmp),
+        /* choose the copy that is on our node/cpu */
+        loc_cpu_entry = newinfo->entries[raw_smp_processor_id()];
+        if (copy_from_user(loc_cpu_entry, user + sizeof(tmp),
                            tmp.size) != 0) {
                 ret = -EFAULT;
                 goto free_newinfo;
@@ -1229,10 +1285,9 @@ do_replace(void __user *user, unsigned int len)
                 ret = -ENOMEM;
                 goto free_newinfo;
         }
-        memset(counters, 0, tmp.num_counters * sizeof(struct ip6t_counters));
 
         ret = translate_table(tmp.name, tmp.valid_hooks,
-                              newinfo, tmp.size, tmp.num_entries,
+                              newinfo, loc_cpu_entry, tmp.size, tmp.num_entries,
                               tmp.hook_entry, tmp.underflow);
         if (ret != 0)
                 goto free_newinfo_counters;
@@ -1271,8 +1326,9 @@ do_replace(void __user *user, unsigned int len)
         /* Get the old counters. */
         get_counters(oldinfo, counters);
         /* Decrease module usage counts and free resource */
-        IP6T_ENTRY_ITERATE(oldinfo->entries, oldinfo->size, cleanup_entry,NULL);
-        vfree(oldinfo);
+        loc_cpu_old_entry = oldinfo->entries[raw_smp_processor_id()];
+        IP6T_ENTRY_ITERATE(loc_cpu_old_entry, oldinfo->size, cleanup_entry,NULL);
+        free_table_info(oldinfo);
         if (copy_to_user(tmp.counters, counters,
                          sizeof(struct ip6t_counters) * tmp.num_counters) != 0)
                 ret = -EFAULT;
@@ -1284,11 +1340,11 @@ do_replace(void __user *user, unsigned int len)
         module_put(t->me);
         up(&ip6t_mutex);
  free_newinfo_counters_untrans:
-        IP6T_ENTRY_ITERATE(newinfo->entries, newinfo->size, cleanup_entry,NULL);
+        IP6T_ENTRY_ITERATE(loc_cpu_entry, newinfo->size, cleanup_entry,NULL);
  free_newinfo_counters:
         vfree(counters);
  free_newinfo:
-        vfree(newinfo);
+        free_table_info(newinfo);
         return ret;
 }
 
@@ -1321,6 +1377,7 @@ do_add_counters(void __user *user, unsigned int len)
         struct ip6t_counters_info tmp, *paddc;
         struct ip6t_table *t;
         int ret = 0;
+        void *loc_cpu_entry;
 
         if (copy_from_user(&tmp, user, sizeof(tmp)) != 0)
                 return -EFAULT;
@@ -1350,7 +1407,9 @@ do_add_counters(void __user *user, unsigned int len)
         }
 
         i = 0;
-        IP6T_ENTRY_ITERATE(t->private->entries,
+        /* Choose the copy that is on our node */
+        loc_cpu_entry = t->private->entries[smp_processor_id()];
+        IP6T_ENTRY_ITERATE(loc_cpu_entry,
                           t->private->size,
                           add_counter_to_entry,
                           paddc->counters,
@@ -1543,28 +1602,29 @@ int ip6t_register_table(struct ip6t_table *table,
         struct ip6t_table_info *newinfo;
         static struct ip6t_table_info bootstrap
                 = { 0, 0, 0, { 0 }, { 0 }, { } };
+        void *loc_cpu_entry;
 
-        newinfo = vmalloc(sizeof(struct ip6t_table_info)
-                          + SMP_ALIGN(repl->size) *
-                                        (highest_possible_processor_id()+1));
+        newinfo = alloc_table_info(repl->size);
         if (!newinfo)
                 return -ENOMEM;
 
-        memcpy(newinfo->entries, repl->entries, repl->size);
+        /* choose the copy on our node/cpu */
+        loc_cpu_entry = newinfo->entries[raw_smp_processor_id()];
+        memcpy(loc_cpu_entry, repl->entries, repl->size);
 
         ret = translate_table(table->name, table->valid_hooks,
-                              newinfo, repl->size,
+                              newinfo, loc_cpu_entry, repl->size,
                               repl->num_entries,
                               repl->hook_entry,
                               repl->underflow);
         if (ret != 0) {
-                vfree(newinfo);
+                free_table_info(newinfo);
                 return ret;
         }
 
         ret = down_interruptible(&ip6t_mutex);
         if (ret != 0) {
-                vfree(newinfo);
+                free_table_info(newinfo);
                 return ret;
         }
 
@@ -1593,20 +1653,23 @@ int ip6t_register_table(struct ip6t_table *table,
         return ret;
 
  free_unlock:
-        vfree(newinfo);
+        free_table_info(newinfo);
         goto unlock;
 }
 
 void ip6t_unregister_table(struct ip6t_table *table)
 {
+        void *loc_cpu_entry;
+
         down(&ip6t_mutex);
         LIST_DELETE(&ip6t_tables, table);
         up(&ip6t_mutex);
 
         /* Decrease module usage counts and free resources */
-        IP6T_ENTRY_ITERATE(table->private->entries, table->private->size,
+        loc_cpu_entry = table->private->entries[raw_smp_processor_id()];
+        IP6T_ENTRY_ITERATE(loc_cpu_entry, table->private->size,
                           cleanup_entry, NULL);
-        vfree(table->private);
+        free_table_info(table->private);
 }
 
 /* Returns 1 if the port is matched by the range, 0 otherwise */
diff --git a/net/ipv6/netfilter/ip6t_LOG.c b/net/ipv6/netfilter/ip6t_LOG.c
index 0cd1d1bd9033..ae4653bfd654 100644
--- a/net/ipv6/netfilter/ip6t_LOG.c
+++ b/net/ipv6/netfilter/ip6t_LOG.c
@@ -13,6 +13,7 @@
 #include <linux/module.h>
 #include <linux/moduleparam.h>
 #include <linux/skbuff.h>
+#include <linux/if_arp.h>
 #include <linux/ip.h>
 #include <linux/spinlock.h>
 #include <linux/icmpv6.h>
diff --git a/net/ipv6/netfilter/ip6t_ah.c b/net/ipv6/netfilter/ip6t_ah.c
index dde37793d20b..268918d5deea 100644
--- a/net/ipv6/netfilter/ip6t_ah.c
+++ b/net/ipv6/netfilter/ip6t_ah.c
@@ -9,6 +9,7 @@
 
 #include <linux/module.h>
 #include <linux/skbuff.h>
+#include <linux/ip.h>
 #include <linux/ipv6.h>
 #include <linux/types.h>
 #include <net/checksum.h>
diff --git a/net/ipv6/netfilter/ip6t_esp.c b/net/ipv6/netfilter/ip6t_esp.c
index 24bc0cde43a1..65937de1b58c 100644
--- a/net/ipv6/netfilter/ip6t_esp.c
+++ b/net/ipv6/netfilter/ip6t_esp.c
@@ -9,6 +9,7 @@
 
 #include <linux/module.h>
 #include <linux/skbuff.h>
+#include <linux/ip.h>
 #include <linux/ipv6.h>
 #include <linux/types.h>
 #include <net/checksum.h>
diff --git a/net/ipv6/netfilter/nf_conntrack_reasm.c b/net/ipv6/netfilter/nf_conntrack_reasm.c
index c2c52af9e560..f3e5ffbd592f 100644
--- a/net/ipv6/netfilter/nf_conntrack_reasm.c
+++ b/net/ipv6/netfilter/nf_conntrack_reasm.c
@@ -98,7 +98,7 @@ struct nf_ct_frag6_queue
 #define FRAG6Q_HASHSZ   64
 
 static struct nf_ct_frag6_queue *nf_ct_frag6_hash[FRAG6Q_HASHSZ];
-static rwlock_t nf_ct_frag6_lock = RW_LOCK_UNLOCKED;
+static DEFINE_RWLOCK(nf_ct_frag6_lock);
 static u32 nf_ct_frag6_hash_rnd;
 static LIST_HEAD(nf_ct_frag6_lru_list);
 int nf_ct_frag6_nqueues = 0;
@@ -371,7 +371,7 @@ nf_ct_frag6_create(unsigned int hash, u32 id, struct in6_addr *src,				   struct
         init_timer(&fq->timer);
         fq->timer.function = nf_ct_frag6_expire;
         fq->timer.data = (long) fq;
-        fq->lock = SPIN_LOCK_UNLOCKED;
+        spin_lock_init(&fq->lock);
         atomic_set(&fq->refcnt, 1);
 
         return nf_ct_frag6_intern(hash, fq);
diff --git a/net/ipv6/raw.c b/net/ipv6/raw.c
index a66900cda2af..66f1d12ea578 100644
--- a/net/ipv6/raw.c
+++ b/net/ipv6/raw.c
@@ -32,6 +32,7 @@
 #include <linux/icmpv6.h>
 #include <linux/netfilter.h>
 #include <linux/netfilter_ipv6.h>
+#include <linux/skbuff.h>
 #include <asm/uaccess.h>
 #include <asm/ioctls.h>
 #include <asm/bug.h>
@@ -433,25 +434,14 @@ out:
         return err;
 
 csum_copy_err:
-        /* Clear queue. */
-        if (flags&MSG_PEEK) {
-                int clear = 0;
-                spin_lock_bh(&sk->sk_receive_queue.lock);
-                if (skb == skb_peek(&sk->sk_receive_queue)) {
-                        __skb_unlink(skb, &sk->sk_receive_queue);
-                        clear = 1;
-                }
-                spin_unlock_bh(&sk->sk_receive_queue.lock);
-                if (clear)
-                        kfree_skb(skb);
-        }
+        skb_kill_datagram(sk, skb, flags);
 
         /* Error for blocking case is chosen to masquerade
            as some normal condition.
          */
         err = (flags&MSG_DONTWAIT) ? -EAGAIN : -EHOSTUNREACH;
         /* FIXME: increment a raw6 drops counter here */
-        goto out_free;
+        goto out;
 }
 
 static int rawv6_push_pending_frames(struct sock *sk, struct flowi *fl,
diff --git a/net/ipv6/tcp_ipv6.c b/net/ipv6/tcp_ipv6.c
index 8827389abaf7..2947bc56d8a0 100644
--- a/net/ipv6/tcp_ipv6.c
+++ b/net/ipv6/tcp_ipv6.c
@@ -48,6 +48,7 @@
 #include <net/tcp.h>
 #include <net/ndisc.h>
 #include <net/inet6_hashtables.h>
+#include <net/inet6_connection_sock.h>
 #include <net/ipv6.h>
 #include <net/transp_v6.h>
 #include <net/addrconf.h>
@@ -59,6 +60,7 @@
 #include <net/addrconf.h>
 #include <net/snmp.h>
 #include <net/dsfield.h>
+#include <net/timewait_sock.h>
 
 #include <asm/uaccess.h>
 
@@ -67,224 +69,33 @@
 
 static void     tcp_v6_send_reset(struct sk_buff *skb);
 static void     tcp_v6_reqsk_send_ack(struct sk_buff *skb, struct request_sock *req);
-static void     tcp_v6_send_check(struct sock *sk, struct tcphdr *th, int len, 
+static void     tcp_v6_send_check(struct sock *sk, int len, 
                                   struct sk_buff *skb);
 
 static int      tcp_v6_do_rcv(struct sock *sk, struct sk_buff *skb);
-static int      tcp_v6_xmit(struct sk_buff *skb, int ipfragok);
 
-static struct tcp_func ipv6_mapped;
-static struct tcp_func ipv6_specific;
+static struct inet_connection_sock_af_ops ipv6_mapped;
+static struct inet_connection_sock_af_ops ipv6_specific;
 
-static inline int tcp_v6_bind_conflict(const struct sock *sk,
-                                       const struct inet_bind_bucket *tb)
-{
-        const struct sock *sk2;
-        const struct hlist_node *node;
-
-        /* We must walk the whole port owner list in this case. -DaveM */
-        sk_for_each_bound(sk2, node, &tb->owners) {
-                if (sk != sk2 &&
-                    (!sk->sk_bound_dev_if ||
-                     !sk2->sk_bound_dev_if ||
-                     sk->sk_bound_dev_if == sk2->sk_bound_dev_if) &&
-                    (!sk->sk_reuse || !sk2->sk_reuse ||
-                     sk2->sk_state == TCP_LISTEN) &&
-                     ipv6_rcv_saddr_equal(sk, sk2))
-                        break;
-        }
-
-        return node != NULL;
-}
-
-/* Grrr, addr_type already calculated by caller, but I don't want
- * to add some silly "cookie" argument to this method just for that.
- * But it doesn't matter, the recalculation is in the rarest path
- * this function ever takes.
- */
 static int tcp_v6_get_port(struct sock *sk, unsigned short snum)
 {
-        struct inet_bind_hashbucket *head;
-        struct inet_bind_bucket *tb;
-        struct hlist_node *node;
-        int ret;
-
-        local_bh_disable();
-        if (snum == 0) {
-                int low = sysctl_local_port_range[0];
-                int high = sysctl_local_port_range[1];
-                int remaining = (high - low) + 1;
-                int rover = net_random() % (high - low) + low;
-
-                do {
-                        head = &tcp_hashinfo.bhash[inet_bhashfn(rover, tcp_hashinfo.bhash_size)];
-                        spin_lock(&head->lock);
-                        inet_bind_bucket_for_each(tb, node, &head->chain)
-                                if (tb->port == rover)
-                                        goto next;
-                        break;
-                next:
-                        spin_unlock(&head->lock);
-                        if (++rover > high)
-                                rover = low;
-                } while (--remaining > 0);
-
-                /* Exhausted local port range during search?  It is not
-                 * possible for us to be holding one of the bind hash
-                 * locks if this test triggers, because if 'remaining'
-                 * drops to zero, we broke out of the do/while loop at
-                 * the top level, not from the 'break;' statement.
-                 */
-                ret = 1;
-                if (unlikely(remaining <= 0))
-                        goto fail;
-
-                /* OK, here is the one we will use. */
-                snum = rover;
-        } else {
-                head = &tcp_hashinfo.bhash[inet_bhashfn(snum, tcp_hashinfo.bhash_size)];
-                spin_lock(&head->lock);
-                inet_bind_bucket_for_each(tb, node, &head->chain)
-                        if (tb->port == snum)
-                                goto tb_found;
-        }
-        tb = NULL;
-        goto tb_not_found;
-tb_found:
-        if (tb && !hlist_empty(&tb->owners)) {
-                if (tb->fastreuse > 0 && sk->sk_reuse &&
-                    sk->sk_state != TCP_LISTEN) {
-                        goto success;
-                } else {
-                        ret = 1;
-                        if (tcp_v6_bind_conflict(sk, tb))
-                                goto fail_unlock;
-                }
-        }
-tb_not_found:
-        ret = 1;
-        if (tb == NULL) {
-                tb = inet_bind_bucket_create(tcp_hashinfo.bind_bucket_cachep, head, snum);
-                if (tb == NULL)
-                        goto fail_unlock;
-        }
-        if (hlist_empty(&tb->owners)) {
-                if (sk->sk_reuse && sk->sk_state != TCP_LISTEN)
-                        tb->fastreuse = 1;
-                else
-                        tb->fastreuse = 0;
-        } else if (tb->fastreuse &&
-                   (!sk->sk_reuse || sk->sk_state == TCP_LISTEN))
-                tb->fastreuse = 0;
-
-success:
-        if (!inet_csk(sk)->icsk_bind_hash)
-                inet_bind_hash(sk, tb, snum);
-        BUG_TRAP(inet_csk(sk)->icsk_bind_hash == tb);
-        ret = 0;
-
-fail_unlock:
-        spin_unlock(&head->lock);
-fail:
-        local_bh_enable();
-        return ret;
-}
-
-static __inline__ void __tcp_v6_hash(struct sock *sk)
-{
-        struct hlist_head *list;
-        rwlock_t *lock;
-
-        BUG_TRAP(sk_unhashed(sk));
-
-        if (sk->sk_state == TCP_LISTEN) {
-                list = &tcp_hashinfo.listening_hash[inet_sk_listen_hashfn(sk)];
-                lock = &tcp_hashinfo.lhash_lock;
-                inet_listen_wlock(&tcp_hashinfo);
-        } else {
-                unsigned int hash;
-                sk->sk_hash = hash = inet6_sk_ehashfn(sk);
-                hash &= (tcp_hashinfo.ehash_size - 1);
-                list = &tcp_hashinfo.ehash[hash].chain;
-                lock = &tcp_hashinfo.ehash[hash].lock;
-                write_lock(lock);
-        }
-
-        __sk_add_node(sk, list);
-        sock_prot_inc_use(sk->sk_prot);
-        write_unlock(lock);
+        return inet_csk_get_port(&tcp_hashinfo, sk, snum,
+                                 inet6_csk_bind_conflict);
 }
 
-
 static void tcp_v6_hash(struct sock *sk)
 {
         if (sk->sk_state != TCP_CLOSE) {
-                struct tcp_sock *tp = tcp_sk(sk);
-
-                if (tp->af_specific == &ipv6_mapped) {
+                if (inet_csk(sk)->icsk_af_ops == &ipv6_mapped) {
                         tcp_prot.hash(sk);
                         return;
                 }
                 local_bh_disable();
-                __tcp_v6_hash(sk);
+                __inet6_hash(&tcp_hashinfo, sk);
                 local_bh_enable();
         }
 }
 
-/*
- * Open request hash tables.
- */
-
-static u32 tcp_v6_synq_hash(const struct in6_addr *raddr, const u16 rport, const u32 rnd)
-{
-        u32 a, b, c;
-
-        a = raddr->s6_addr32[0];
-        b = raddr->s6_addr32[1];
-        c = raddr->s6_addr32[2];
-
-        a += JHASH_GOLDEN_RATIO;
-        b += JHASH_GOLDEN_RATIO;
-        c += rnd;
-        __jhash_mix(a, b, c);
-
-        a += raddr->s6_addr32[3];
-        b += (u32) rport;
-        __jhash_mix(a, b, c);
-
-        return c & (TCP_SYNQ_HSIZE - 1);
-}
-
-static struct request_sock *tcp_v6_search_req(const struct sock *sk,
-                                              struct request_sock ***prevp,
-                                              __u16 rport,
-                                              struct in6_addr *raddr,
-                                              struct in6_addr *laddr,
-                                              int iif)
-{
-        const struct inet_connection_sock *icsk = inet_csk(sk);
-        struct listen_sock *lopt = icsk->icsk_accept_queue.listen_opt;
-        struct request_sock *req, **prev;  
-
-        for (prev = &lopt->syn_table[tcp_v6_synq_hash(raddr, rport, lopt->hash_rnd)];
-             (req = *prev) != NULL;
-             prev = &req->dl_next) {
-                const struct tcp6_request_sock *treq = tcp6_rsk(req);
-
-                if (inet_rsk(req)->rmt_port == rport &&
-                    req->rsk_ops->family == AF_INET6 &&
-                    ipv6_addr_equal(&treq->rmt_addr, raddr) &&
-                    ipv6_addr_equal(&treq->loc_addr, laddr) &&
-                    (!treq->iif || treq->iif == iif)) {
-                        BUG_TRAP(req->sk == NULL);
-                        *prevp = prev;
-                        return req;
-                }
-        }
-
-        return NULL;
-}
-
 static __inline__ u16 tcp_v6_check(struct tcphdr *th, int len,
                                    struct in6_addr *saddr, 
                                    struct in6_addr *daddr, 
@@ -308,195 +119,12 @@ static __u32 tcp_v6_init_sequence(struct sock *sk, struct sk_buff *skb)
         }
 }
 
-static int __tcp_v6_check_established(struct sock *sk, const __u16 lport,
-                                      struct inet_timewait_sock **twp)
-{
-        struct inet_sock *inet = inet_sk(sk);
-        const struct ipv6_pinfo *np = inet6_sk(sk);
-        const struct in6_addr *daddr = &np->rcv_saddr;
-        const struct in6_addr *saddr = &np->daddr;
-        const int dif = sk->sk_bound_dev_if;
-        const u32 ports = INET_COMBINED_PORTS(inet->dport, lport);
-        unsigned int hash = inet6_ehashfn(daddr, inet->num, saddr, inet->dport);
-        struct inet_ehash_bucket *head = inet_ehash_bucket(&tcp_hashinfo, hash);
-        struct sock *sk2;
-        const struct hlist_node *node;
-        struct inet_timewait_sock *tw;
-
-        prefetch(head->chain.first);
-        write_lock(&head->lock);
-
-        /* Check TIME-WAIT sockets first. */
-        sk_for_each(sk2, node, &(head + tcp_hashinfo.ehash_size)->chain) {
-                const struct tcp6_timewait_sock *tcp6tw = tcp6_twsk(sk2);
-
-                tw = inet_twsk(sk2);
-
-                if(*((__u32 *)&(tw->tw_dport))  == ports        &&
-                   sk2->sk_family               == PF_INET6     &&
-                   ipv6_addr_equal(&tcp6tw->tw_v6_daddr, saddr) &&
-                   ipv6_addr_equal(&tcp6tw->tw_v6_rcv_saddr, daddr)     &&
-                   sk2->sk_bound_dev_if == sk->sk_bound_dev_if) {
-                        const struct tcp_timewait_sock *tcptw = tcp_twsk(sk2);
-                        struct tcp_sock *tp = tcp_sk(sk);
-
-                        if (tcptw->tw_ts_recent_stamp &&
-                            (!twp ||
-                             (sysctl_tcp_tw_reuse &&
-                              xtime.tv_sec - tcptw->tw_ts_recent_stamp > 1))) {
-                                /* See comment in tcp_ipv4.c */
-                                tp->write_seq = tcptw->tw_snd_nxt + 65535 + 2;
-                                if (!tp->write_seq)
-                                        tp->write_seq = 1;
-                                tp->rx_opt.ts_recent       = tcptw->tw_ts_recent;
-                                tp->rx_opt.ts_recent_stamp = tcptw->tw_ts_recent_stamp;
-                                sock_hold(sk2);
-                                goto unique;
-                        } else
-                                goto not_unique;
-                }
-        }
-        tw = NULL;
-
-        /* And established part... */
-        sk_for_each(sk2, node, &head->chain) {
-                if (INET6_MATCH(sk2, hash, saddr, daddr, ports, dif))
-                        goto not_unique;
-        }
-
-unique:
-        BUG_TRAP(sk_unhashed(sk));
-        __sk_add_node(sk, &head->chain);
-        sk->sk_hash = hash;
-        sock_prot_inc_use(sk->sk_prot);
-        write_unlock(&head->lock);
-
-        if (twp) {
-                *twp = tw;
-                NET_INC_STATS_BH(LINUX_MIB_TIMEWAITRECYCLED);
-        } else if (tw) {
-                /* Silly. Should hash-dance instead... */
-                inet_twsk_deschedule(tw, &tcp_death_row);
-                NET_INC_STATS_BH(LINUX_MIB_TIMEWAITRECYCLED);
-
-                inet_twsk_put(tw);
-        }
-        return 0;
-
-not_unique:
-        write_unlock(&head->lock);
-        return -EADDRNOTAVAIL;
-}
-
-static inline u32 tcpv6_port_offset(const struct sock *sk)
-{
-        const struct inet_sock *inet = inet_sk(sk);
-        const struct ipv6_pinfo *np = inet6_sk(sk);
-
-        return secure_tcpv6_port_ephemeral(np->rcv_saddr.s6_addr32,
-                                           np->daddr.s6_addr32,
-                                           inet->dport);
-}
-
-static int tcp_v6_hash_connect(struct sock *sk)
-{
-        unsigned short snum = inet_sk(sk)->num;
-        struct inet_bind_hashbucket *head;
-        struct inet_bind_bucket *tb;
-        int ret;
-
-        if (!snum) {
-                int low = sysctl_local_port_range[0];
-                int high = sysctl_local_port_range[1];
-                int range = high - low;
-                int i;
-                int port;
-                static u32 hint;
-                u32 offset = hint + tcpv6_port_offset(sk);
-                struct hlist_node *node;
-                struct inet_timewait_sock *tw = NULL;
-
-                local_bh_disable();
-                for (i = 1; i <= range; i++) {
-                        port = low + (i + offset) % range;
-                        head = &tcp_hashinfo.bhash[inet_bhashfn(port, tcp_hashinfo.bhash_size)];
-                        spin_lock(&head->lock);
-
-                        /* Does not bother with rcv_saddr checks,
-                         * because the established check is already
-                         * unique enough.
-                         */
-                        inet_bind_bucket_for_each(tb, node, &head->chain) {
-                                if (tb->port == port) {
-                                        BUG_TRAP(!hlist_empty(&tb->owners));
-                                        if (tb->fastreuse >= 0)
-                                                goto next_port;
-                                        if (!__tcp_v6_check_established(sk,
-                                                                        port,
-                                                                        &tw))
-                                                goto ok;
-                                        goto next_port;
-                                }
-                        }
-
-                        tb = inet_bind_bucket_create(tcp_hashinfo.bind_bucket_cachep, head, port);
-                        if (!tb) {
-                                spin_unlock(&head->lock);
-                                break;
-                        }
-                        tb->fastreuse = -1;
-                        goto ok;
-
-                next_port:
-                        spin_unlock(&head->lock);
-                }
-                local_bh_enable();
-
-                return -EADDRNOTAVAIL;
-
-ok:
-                hint += i;
-
-                /* Head lock still held and bh's disabled */
-                inet_bind_hash(sk, tb, port);
-                if (sk_unhashed(sk)) {
-                        inet_sk(sk)->sport = htons(port);
-                        __tcp_v6_hash(sk);
-                }
-                spin_unlock(&head->lock);
-
-                if (tw) {
-                        inet_twsk_deschedule(tw, &tcp_death_row);
-                        inet_twsk_put(tw);
-                }
-
-                ret = 0;
-                goto out;
-        }
-
-        head = &tcp_hashinfo.bhash[inet_bhashfn(snum, tcp_hashinfo.bhash_size)];
-        tb   = inet_csk(sk)->icsk_bind_hash;
-        spin_lock_bh(&head->lock);
-
-        if (sk_head(&tb->owners) == sk && !sk->sk_bind_node.next) {
-                __tcp_v6_hash(sk);
-                spin_unlock_bh(&head->lock);
-                return 0;
-        } else {
-                spin_unlock(&head->lock);
-                /* No definite answer... Walk to established hash table */
-                ret = __tcp_v6_check_established(sk, snum, NULL);
-out:
-                local_bh_enable();
-                return ret;
-        }
-}
-
 static int tcp_v6_connect(struct sock *sk, struct sockaddr *uaddr, 
                           int addr_len)
 {
         struct sockaddr_in6 *usin = (struct sockaddr_in6 *) uaddr;
-        struct inet_sock *inet = inet_sk(sk);
+        struct inet_sock *inet = inet_sk(sk);
+        struct inet_connection_sock *icsk = inet_csk(sk);
         struct ipv6_pinfo *np = inet6_sk(sk);
         struct tcp_sock *tp = tcp_sk(sk);
         struct in6_addr *saddr = NULL, *final_p = NULL, final;
@@ -571,7 +199,7 @@ static int tcp_v6_connect(struct sock *sk, struct sockaddr *uaddr,
          */
 
         if (addr_type == IPV6_ADDR_MAPPED) {
-                u32 exthdrlen = tp->ext_header_len;
+                u32 exthdrlen = icsk->icsk_ext_hdr_len;
                 struct sockaddr_in sin;
 
                 SOCK_DEBUG(sk, "connect: ipv4 mapped\n");
@@ -583,14 +211,14 @@ static int tcp_v6_connect(struct sock *sk, struct sockaddr *uaddr,
                 sin.sin_port = usin->sin6_port;
                 sin.sin_addr.s_addr = usin->sin6_addr.s6_addr32[3];
 
-                tp->af_specific = &ipv6_mapped;
+                icsk->icsk_af_ops = &ipv6_mapped;
                 sk->sk_backlog_rcv = tcp_v4_do_rcv;
 
                 err = tcp_v4_connect(sk, (struct sockaddr *)&sin, sizeof(sin));
 
                 if (err) {
-                        tp->ext_header_len = exthdrlen;
-                        tp->af_specific = &ipv6_specific;
+                        icsk->icsk_ext_hdr_len = exthdrlen;
+                        icsk->icsk_af_ops = &ipv6_specific;
                         sk->sk_backlog_rcv = tcp_v6_do_rcv;
                         goto failure;
                 } else {
@@ -643,16 +271,17 @@ static int tcp_v6_connect(struct sock *sk, struct sockaddr *uaddr,
         sk->sk_route_caps = dst->dev->features &
                 ~(NETIF_F_IP_CSUM | NETIF_F_TSO);
 
-        tp->ext_header_len = 0;
+        icsk->icsk_ext_hdr_len = 0;
         if (np->opt)
-                tp->ext_header_len = np->opt->opt_flen + np->opt->opt_nflen;
+                icsk->icsk_ext_hdr_len = (np->opt->opt_flen +
+                                          np->opt->opt_nflen);
 
         tp->rx_opt.mss_clamp = IPV6_MIN_MTU - sizeof(struct tcphdr) - sizeof(struct ipv6hdr);
 
         inet->dport = usin->sin6_port;
 
         tcp_set_state(sk, TCP_SYN_SENT);
-        err = tcp_v6_hash_connect(sk);
+        err = inet6_hash_connect(&tcp_death_row, sk);
         if (err)
                 goto late_failure;
 
@@ -758,7 +387,7 @@ static void tcp_v6_err(struct sk_buff *skb, struct inet6_skb_parm *opt,
                 } else
                         dst_hold(dst);
 
-                if (tp->pmtu_cookie > dst_mtu(dst)) {
+                if (inet_csk(sk)->icsk_pmtu_cookie > dst_mtu(dst)) {
                         tcp_sync_mss(sk, dst_mtu(dst));
                         tcp_simple_retransmit(sk);
                 } /* else let the usual retransmit timer handle it */
@@ -775,8 +404,8 @@ static void tcp_v6_err(struct sk_buff *skb, struct inet6_skb_parm *opt,
                 if (sock_owned_by_user(sk))
                         goto out;
 
-                req = tcp_v6_search_req(sk, &prev, th->dest, &hdr->daddr,
-                                        &hdr->saddr, inet6_iif(skb));
+                req = inet6_csk_search_req(sk, &prev, th->dest, &hdr->daddr,
+                                           &hdr->saddr, inet6_iif(skb));
                 if (!req)
                         goto out;
 
@@ -822,7 +451,7 @@ out:
 static int tcp_v6_send_synack(struct sock *sk, struct request_sock *req,
                               struct dst_entry *dst)
 {
-        struct tcp6_request_sock *treq = tcp6_rsk(req);
+        struct inet6_request_sock *treq = inet6_rsk(req);
         struct ipv6_pinfo *np = inet6_sk(sk);
         struct sk_buff * skb;
         struct ipv6_txoptions *opt = NULL;
@@ -888,8 +517,8 @@ done:
 
 static void tcp_v6_reqsk_destructor(struct request_sock *req)
 {
-        if (tcp6_rsk(req)->pktopts)
-                kfree_skb(tcp6_rsk(req)->pktopts);
+        if (inet6_rsk(req)->pktopts)
+                kfree_skb(inet6_rsk(req)->pktopts);
 }
 
 static struct request_sock_ops tcp6_request_sock_ops = {
@@ -901,26 +530,15 @@ static struct request_sock_ops tcp6_request_sock_ops = {
         .send_reset     =       tcp_v6_send_reset
 };
 
-static int ipv6_opt_accepted(struct sock *sk, struct sk_buff *skb)
-{
-        struct ipv6_pinfo *np = inet6_sk(sk);
-        struct inet6_skb_parm *opt = IP6CB(skb);
-
-        if (np->rxopt.all) {
-                if ((opt->hop && (np->rxopt.bits.hopopts || np->rxopt.bits.ohopopts)) ||
-                    ((IPV6_FLOWINFO_MASK & *(u32*)skb->nh.raw) && np->rxopt.bits.rxflow) ||
-                    (opt->srcrt && (np->rxopt.bits.srcrt || np->rxopt.bits.osrcrt)) ||
-                    ((opt->dst1 || opt->dst0) && (np->rxopt.bits.dstopts || np->rxopt.bits.odstopts)))
-                        return 1;
-        }
-        return 0;
-}
-
+static struct timewait_sock_ops tcp6_timewait_sock_ops = {
+        .twsk_obj_size  = sizeof(struct tcp6_timewait_sock),
+        .twsk_unique    = tcp_twsk_unique,
+};
 
-static void tcp_v6_send_check(struct sock *sk, struct tcphdr *th, int len, 
-                              struct sk_buff *skb)
+static void tcp_v6_send_check(struct sock *sk, int len, struct sk_buff *skb)
 {
         struct ipv6_pinfo *np = inet6_sk(sk);
+        struct tcphdr *th = skb->h.th;
 
         if (skb->ip_summed == CHECKSUM_HW) {
                 th->check = ~csum_ipv6_magic(&np->saddr, &np->daddr, len, IPPROTO_TCP,  0);
@@ -1091,8 +709,9 @@ static struct sock *tcp_v6_hnd_req(struct sock *sk,struct sk_buff *skb)
         struct sock *nsk;
 
         /* Find possible connection requests. */
-        req = tcp_v6_search_req(sk, &prev, th->source, &skb->nh.ipv6h->saddr,
-                                &skb->nh.ipv6h->daddr, inet6_iif(skb));
+        req = inet6_csk_search_req(sk, &prev, th->source,
+                                   &skb->nh.ipv6h->saddr,
+                                   &skb->nh.ipv6h->daddr, inet6_iif(skb));
         if (req)
                 return tcp_check_req(sk, skb, req, prev);
 
@@ -1116,23 +735,12 @@ static struct sock *tcp_v6_hnd_req(struct sock *sk,struct sk_buff *skb)
         return sk;
 }
 
-static void tcp_v6_synq_add(struct sock *sk, struct request_sock *req)
-{
-        struct inet_connection_sock *icsk = inet_csk(sk);
-        struct listen_sock *lopt = icsk->icsk_accept_queue.listen_opt;
-        const u32 h = tcp_v6_synq_hash(&tcp6_rsk(req)->rmt_addr, inet_rsk(req)->rmt_port, lopt->hash_rnd);
-
-        reqsk_queue_hash_req(&icsk->icsk_accept_queue, h, req, TCP_TIMEOUT_INIT);
-        inet_csk_reqsk_queue_added(sk, TCP_TIMEOUT_INIT);
-}
-
-
 /* FIXME: this is substantially similar to the ipv4 code.
  * Can some kind of merge be done? -- erics
  */
 static int tcp_v6_conn_request(struct sock *sk, struct sk_buff *skb)
 {
-        struct tcp6_request_sock *treq;
+        struct inet6_request_sock *treq;
         struct ipv6_pinfo *np = inet6_sk(sk);
         struct tcp_options_received tmp_opt;
         struct tcp_sock *tp = tcp_sk(sk);
@@ -1157,7 +765,7 @@ static int tcp_v6_conn_request(struct sock *sk, struct sk_buff *skb)
         if (sk_acceptq_is_full(sk) && inet_csk_reqsk_queue_young(sk) > 1)
                 goto drop;
 
-        req = reqsk_alloc(&tcp6_request_sock_ops);
+        req = inet6_reqsk_alloc(&tcp6_request_sock_ops);
         if (req == NULL)
                 goto drop;
 
@@ -1170,7 +778,7 @@ static int tcp_v6_conn_request(struct sock *sk, struct sk_buff *skb)
         tmp_opt.tstamp_ok = tmp_opt.saw_tstamp;
         tcp_openreq_init(req, &tmp_opt, skb);
 
-        treq = tcp6_rsk(req);
+        treq = inet6_rsk(req);
         ipv6_addr_copy(&treq->rmt_addr, &skb->nh.ipv6h->saddr);
         ipv6_addr_copy(&treq->loc_addr, &skb->nh.ipv6h->daddr);
         TCP_ECN_create_request(req, skb->h.th);
@@ -1196,8 +804,7 @@ static int tcp_v6_conn_request(struct sock *sk, struct sk_buff *skb)
         if (tcp_v6_send_synack(sk, req, NULL))
                 goto drop;
 
-        tcp_v6_synq_add(sk, req);
-
+        inet6_csk_reqsk_queue_hash_add(sk, req, TCP_TIMEOUT_INIT);
         return 0;
 
 drop:
@@ -1212,7 +819,7 @@ static struct sock * tcp_v6_syn_recv_sock(struct sock *sk, struct sk_buff *skb,
                                           struct request_sock *req,
                                           struct dst_entry *dst)
 {
-        struct tcp6_request_sock *treq = tcp6_rsk(req);
+        struct inet6_request_sock *treq = inet6_rsk(req);
         struct ipv6_pinfo *newnp, *np = inet6_sk(sk);
         struct tcp6_sock *newtcp6sk;
         struct inet_sock *newinet;
@@ -1247,7 +854,7 @@ static struct sock * tcp_v6_syn_recv_sock(struct sock *sk, struct sk_buff *skb,
 
                 ipv6_addr_copy(&newnp->rcv_saddr, &newnp->saddr);
 
-                newtp->af_specific = &ipv6_mapped;
+                inet_csk(newsk)->icsk_af_ops = &ipv6_mapped;
                 newsk->sk_backlog_rcv = tcp_v4_do_rcv;
                 newnp->pktoptions  = NULL;
                 newnp->opt         = NULL;
@@ -1261,10 +868,10 @@ static struct sock * tcp_v6_syn_recv_sock(struct sock *sk, struct sk_buff *skb,
                  */
 
                 /* It is tricky place. Until this moment IPv4 tcp
-                   worked with IPv6 af_tcp.af_specific.
+                   worked with IPv6 icsk.icsk_af_ops.
                    Sync it now.
                  */
-                tcp_sync_mss(newsk, newtp->pmtu_cookie);
+                tcp_sync_mss(newsk, inet_csk(newsk)->icsk_pmtu_cookie);
 
                 return newsk;
         }
@@ -1371,10 +978,10 @@ static struct sock * tcp_v6_syn_recv_sock(struct sock *sk, struct sk_buff *skb,
                         sock_kfree_s(sk, opt, opt->tot_len);
         }
 
-        newtp->ext_header_len = 0;
+        inet_csk(newsk)->icsk_ext_hdr_len = 0;
         if (newnp->opt)
-                newtp->ext_header_len = newnp->opt->opt_nflen +
-                                        newnp->opt->opt_flen;
+                inet_csk(newsk)->icsk_ext_hdr_len = (newnp->opt->opt_nflen +
+                                                     newnp->opt->opt_flen);
 
         tcp_sync_mss(newsk, dst_mtu(dst));
         newtp->advmss = dst_metric(dst, RTAX_ADVMSS);
@@ -1382,7 +989,7 @@ static struct sock * tcp_v6_syn_recv_sock(struct sock *sk, struct sk_buff *skb,
 
         newinet->daddr = newinet->saddr = newinet->rcv_saddr = LOOPBACK4_IPV6;
 
-        __tcp_v6_hash(newsk);
+        __inet6_hash(&tcp_hashinfo, newsk);
         inet_inherit_port(&tcp_hashinfo, sk, newsk);
 
         return newsk;
@@ -1679,139 +1286,16 @@ do_time_wait:
         goto discard_it;
 }
 
-static int tcp_v6_rebuild_header(struct sock *sk)
-{
-        int err;
-        struct dst_entry *dst;
-        struct ipv6_pinfo *np = inet6_sk(sk);
-
-        dst = __sk_dst_check(sk, np->dst_cookie);
-
-        if (dst == NULL) {
-                struct inet_sock *inet = inet_sk(sk);
-                struct in6_addr *final_p = NULL, final;
-                struct flowi fl;
-
-                memset(&fl, 0, sizeof(fl));
-                fl.proto = IPPROTO_TCP;
-                ipv6_addr_copy(&fl.fl6_dst, &np->daddr);
-                ipv6_addr_copy(&fl.fl6_src, &np->saddr);
-                fl.fl6_flowlabel = np->flow_label;
-                fl.oif = sk->sk_bound_dev_if;
-                fl.fl_ip_dport = inet->dport;
-                fl.fl_ip_sport = inet->sport;
-
-                if (np->opt && np->opt->srcrt) {
-                        struct rt0_hdr *rt0 = (struct rt0_hdr *) np->opt->srcrt;
-                        ipv6_addr_copy(&final, &fl.fl6_dst);
-                        ipv6_addr_copy(&fl.fl6_dst, rt0->addr);
-                        final_p = &final;
-                }
-
-                err = ip6_dst_lookup(sk, &dst, &fl);
-                if (err) {
-                        sk->sk_route_caps = 0;
-                        return err;
-                }
-                if (final_p)
-                        ipv6_addr_copy(&fl.fl6_dst, final_p);
-
-                if ((err = xfrm_lookup(&dst, &fl, sk, 0)) < 0) {
-                        sk->sk_err_soft = -err;
-                        return err;
-                }
-
-                ip6_dst_store(sk, dst, NULL);
-                sk->sk_route_caps = dst->dev->features &
-                        ~(NETIF_F_IP_CSUM | NETIF_F_TSO);
-        }
-
-        return 0;
-}
-
-static int tcp_v6_xmit(struct sk_buff *skb, int ipfragok)
-{
-        struct sock *sk = skb->sk;
-        struct inet_sock *inet = inet_sk(sk);
-        struct ipv6_pinfo *np = inet6_sk(sk);
-        struct flowi fl;
-        struct dst_entry *dst;
-        struct in6_addr *final_p = NULL, final;
-
-        memset(&fl, 0, sizeof(fl));
-        fl.proto = IPPROTO_TCP;
-        ipv6_addr_copy(&fl.fl6_dst, &np->daddr);
-        ipv6_addr_copy(&fl.fl6_src, &np->saddr);
-        fl.fl6_flowlabel = np->flow_label;
-        IP6_ECN_flow_xmit(sk, fl.fl6_flowlabel);
-        fl.oif = sk->sk_bound_dev_if;
-        fl.fl_ip_sport = inet->sport;
-        fl.fl_ip_dport = inet->dport;
-
-        if (np->opt && np->opt->srcrt) {
-                struct rt0_hdr *rt0 = (struct rt0_hdr *) np->opt->srcrt;
-                ipv6_addr_copy(&final, &fl.fl6_dst);
-                ipv6_addr_copy(&fl.fl6_dst, rt0->addr);
-                final_p = &final;
-        }
-
-        dst = __sk_dst_check(sk, np->dst_cookie);
-
-        if (dst == NULL) {
-                int err = ip6_dst_lookup(sk, &dst, &fl);
-
-                if (err) {
-                        sk->sk_err_soft = -err;
-                        return err;
-                }
-
-                if (final_p)
-                        ipv6_addr_copy(&fl.fl6_dst, final_p);
-
-                if ((err = xfrm_lookup(&dst, &fl, sk, 0)) < 0) {
-                        sk->sk_route_caps = 0;
-                        return err;
-                }
-
-                ip6_dst_store(sk, dst, NULL);
-                sk->sk_route_caps = dst->dev->features &
-                        ~(NETIF_F_IP_CSUM | NETIF_F_TSO);
-        }
-
-        skb->dst = dst_clone(dst);
-
-        /* Restore final destination back after routing done */
-        ipv6_addr_copy(&fl.fl6_dst, &np->daddr);
-
-        return ip6_xmit(sk, skb, &fl, np->opt, 0);
-}
-
-static void v6_addr2sockaddr(struct sock *sk, struct sockaddr * uaddr)
-{
-        struct ipv6_pinfo *np = inet6_sk(sk);
-        struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *) uaddr;
-
-        sin6->sin6_family = AF_INET6;
-        ipv6_addr_copy(&sin6->sin6_addr, &np->daddr);
-        sin6->sin6_port = inet_sk(sk)->dport;
-        /* We do not store received flowlabel for TCP */
-        sin6->sin6_flowinfo = 0;
-        sin6->sin6_scope_id = 0;
-        if (sk->sk_bound_dev_if &&
-            ipv6_addr_type(&sin6->sin6_addr) & IPV6_ADDR_LINKLOCAL)
-                sin6->sin6_scope_id = sk->sk_bound_dev_if;
-}
-
 static int tcp_v6_remember_stamp(struct sock *sk)
 {
         /* Alas, not yet... */
         return 0;
 }
 
-static struct tcp_func ipv6_specific = {
-        .queue_xmit     =       tcp_v6_xmit,
+static struct inet_connection_sock_af_ops ipv6_specific = {
+        .queue_xmit     =       inet6_csk_xmit,
         .send_check     =       tcp_v6_send_check,
-        .rebuild_header =       tcp_v6_rebuild_header,
+        .rebuild_header =       inet6_sk_rebuild_header,
         .conn_request   =       tcp_v6_conn_request,
         .syn_recv_sock  =       tcp_v6_syn_recv_sock,
         .remember_stamp =       tcp_v6_remember_stamp,
@@ -1819,7 +1303,7 @@ static struct tcp_func ipv6_specific = {
 
         .setsockopt     =       ipv6_setsockopt,
         .getsockopt     =       ipv6_getsockopt,
-        .addr2sockaddr  =       v6_addr2sockaddr,
+        .addr2sockaddr  =       inet6_csk_addr2sockaddr,
         .sockaddr_len   =       sizeof(struct sockaddr_in6)
 };
 
@@ -1827,7 +1311,7 @@ static struct tcp_func ipv6_specific = {
  *      TCP over IPv4 via INET6 API
  */
 
-static struct tcp_func ipv6_mapped = {
+static struct inet_connection_sock_af_ops ipv6_mapped = {
         .queue_xmit     =       ip_queue_xmit,
         .send_check     =       tcp_v4_send_check,
         .rebuild_header =       inet_sk_rebuild_header,
@@ -1838,7 +1322,7 @@ static struct tcp_func ipv6_mapped = {
 
         .setsockopt     =       ipv6_setsockopt,
         .getsockopt     =       ipv6_getsockopt,
-        .addr2sockaddr  =       v6_addr2sockaddr,
+        .addr2sockaddr  =       inet6_csk_addr2sockaddr,
         .sockaddr_len   =       sizeof(struct sockaddr_in6)
 };
 
@@ -1877,8 +1361,9 @@ static int tcp_v6_init_sock(struct sock *sk)
 
         sk->sk_state = TCP_CLOSE;
 
-        tp->af_specific = &ipv6_specific;
+        icsk->icsk_af_ops = &ipv6_specific;
         icsk->icsk_ca_ops = &tcp_init_congestion_ops;
+        icsk->icsk_sync_mss = tcp_sync_mss;
         sk->sk_write_space = sk_stream_write_space;
         sock_set_flag(sk, SOCK_USE_WRITE_QUEUE);
 
@@ -1900,14 +1385,13 @@ static int tcp_v6_destroy_sock(struct sock *sk)
 static void get_openreq6(struct seq_file *seq, 
                          struct sock *sk, struct request_sock *req, int i, int uid)
 {
-        struct in6_addr *dest, *src;
         int ttd = req->expires - jiffies;
+        struct in6_addr *src = &inet6_rsk(req)->loc_addr;
+        struct in6_addr *dest = &inet6_rsk(req)->rmt_addr;
 
         if (ttd < 0)
                 ttd = 0;
 
-        src = &tcp6_rsk(req)->loc_addr;
-        dest = &tcp6_rsk(req)->rmt_addr;
         seq_printf(seq,
                    "%4d: %08X%08X%08X%08X:%04X %08X%08X%08X%08X:%04X "
                    "%02X %08X:%08X %02X:%08lX %08X %5d %8d %d %d %p\n",
@@ -1988,14 +1472,14 @@ static void get_timewait6_sock(struct seq_file *seq,
 {
         struct in6_addr *dest, *src;
         __u16 destp, srcp;
-        struct tcp6_timewait_sock *tcp6tw = tcp6_twsk((struct sock *)tw);
+        struct inet6_timewait_sock *tw6 = inet6_twsk((struct sock *)tw);
         int ttd = tw->tw_ttd - jiffies;
 
         if (ttd < 0)
                 ttd = 0;
 
-        dest = &tcp6tw->tw_v6_daddr;
-        src  = &tcp6tw->tw_v6_rcv_saddr;
+        dest = &tw6->tw_v6_daddr;
+        src  = &tw6->tw_v6_rcv_saddr;
         destp = ntohs(tw->tw_dport);
         srcp  = ntohs(tw->tw_sport);
 
@@ -2093,7 +1577,7 @@ struct proto tcpv6_prot = {
         .sysctl_rmem            = sysctl_tcp_rmem,
         .max_header             = MAX_TCP_HEADER,
         .obj_size               = sizeof(struct tcp6_sock),
-        .twsk_obj_size          = sizeof(struct tcp6_timewait_sock),
+        .twsk_prot              = &tcp6_timewait_sock_ops,
         .rsk_prot               = &tcp6_request_sock_ops,
 };
 
@@ -2110,7 +1594,8 @@ static struct inet_protosw tcpv6_protosw = {
         .ops            =       &inet6_stream_ops,
         .capability     =       -1,
         .no_check       =       0,
-        .flags          =       INET_PROTOSW_PERMANENT,
+        .flags          =       INET_PROTOSW_PERMANENT |
+                                INET_PROTOSW_ICSK,
 };
 
 void __init tcpv6_init(void)
diff --git a/net/ipv6/udp.c b/net/ipv6/udp.c
index 5cc8731eb55b..d8538dcea813 100644
--- a/net/ipv6/udp.c
+++ b/net/ipv6/udp.c
@@ -36,6 +36,7 @@
 #include <linux/ipv6.h>
 #include <linux/icmpv6.h>
 #include <linux/init.h>
+#include <linux/skbuff.h>
 #include <asm/uaccess.h>
 
 #include <net/sock.h>
@@ -300,20 +301,7 @@ out:
         return err;
 
 csum_copy_err:
-        /* Clear queue. */
-        if (flags&MSG_PEEK) {
-                int clear = 0;
-                spin_lock_bh(&sk->sk_receive_queue.lock);
-                if (skb == skb_peek(&sk->sk_receive_queue)) {
-                        __skb_unlink(skb, &sk->sk_receive_queue);
-                        clear = 1;
-                }
-                spin_unlock_bh(&sk->sk_receive_queue.lock);
-                if (clear)
-                        kfree_skb(skb);
-        }
-
-        skb_free_datagram(sk, skb);
+        skb_kill_datagram(sk, skb, flags);
 
         if (flags & MSG_DONTWAIT) {
                 UDP6_INC_STATS_USER(UDP_MIB_INERRORS);
diff --git a/net/ipx/af_ipx.c b/net/ipx/af_ipx.c
index 34b3bb868409..0dc519b40404 100644
--- a/net/ipx/af_ipx.c
+++ b/net/ipx/af_ipx.c
@@ -75,7 +75,7 @@ static struct datalink_proto *pEII_datalink;
 static struct datalink_proto *p8023_datalink;
 static struct datalink_proto *pSNAP_datalink;
 
-static struct proto_ops ipx_dgram_ops;
+static const struct proto_ops ipx_dgram_ops;
 
 LIST_HEAD(ipx_interfaces);
 DEFINE_SPINLOCK(ipx_interfaces_lock);
@@ -1884,7 +1884,7 @@ static int ipx_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg)
                 rc = -EINVAL;
                 break;
         default:
-                rc = dev_ioctl(cmd, argp);
+                rc = -ENOIOCTLCMD;
                 break;
         }
 
@@ -1901,7 +1901,7 @@ static struct net_proto_family ipx_family_ops = {
         .owner          = THIS_MODULE,
 };
 
-static struct proto_ops SOCKOPS_WRAPPED(ipx_dgram_ops) = {
+static const struct proto_ops SOCKOPS_WRAPPED(ipx_dgram_ops) = {
         .family         = PF_IPX,
         .owner          = THIS_MODULE,
         .release        = ipx_release,
diff --git a/net/irda/af_irda.c b/net/irda/af_irda.c
index 6f92f9c62990..fbfa96754417 100644
--- a/net/irda/af_irda.c
+++ b/net/irda/af_irda.c
@@ -62,12 +62,12 @@
 
 static int irda_create(struct socket *sock, int protocol);
 
-static struct proto_ops irda_stream_ops;
-static struct proto_ops irda_seqpacket_ops;
-static struct proto_ops irda_dgram_ops;
+static const struct proto_ops irda_stream_ops;
+static const struct proto_ops irda_seqpacket_ops;
+static const struct proto_ops irda_dgram_ops;
 
 #ifdef CONFIG_IRDA_ULTRA
-static struct proto_ops irda_ultra_ops;
+static const struct proto_ops irda_ultra_ops;
 #define ULTRA_MAX_DATA 382
 #endif /* CONFIG_IRDA_ULTRA */
 
@@ -1438,8 +1438,9 @@ static int irda_recvmsg_stream(struct kiocb *iocb, struct socket *sock,
                         /*
                          *      POSIX 1003.1g mandates this order.
                          */
-                        if (sk->sk_err)
-                                ret = sock_error(sk);
+                        ret = sock_error(sk);
+                        if (ret)
+                                break;
                         else if (sk->sk_shutdown & RCV_SHUTDOWN)
                                 ;
                         else if (noblock)
@@ -1821,7 +1822,7 @@ static int irda_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg)
                 return -EINVAL;
         default:
                 IRDA_DEBUG(1, "%s(), doing device ioctl!\n", __FUNCTION__);
-                return dev_ioctl(cmd, (void __user *) arg);
+                return -ENOIOCTLCMD;
         }
 
         /*NOTREACHED*/
@@ -2463,7 +2464,7 @@ static struct net_proto_family irda_family_ops = {
         .owner  = THIS_MODULE,
 };
 
-static struct proto_ops SOCKOPS_WRAPPED(irda_stream_ops) = {
+static const struct proto_ops SOCKOPS_WRAPPED(irda_stream_ops) = {
         .family =       PF_IRDA,
         .owner =        THIS_MODULE,
         .release =      irda_release,
@@ -2484,7 +2485,7 @@ static struct proto_ops SOCKOPS_WRAPPED(irda_stream_ops) = {
         .sendpage =     sock_no_sendpage,
 };
 
-static struct proto_ops SOCKOPS_WRAPPED(irda_seqpacket_ops) = {
+static const struct proto_ops SOCKOPS_WRAPPED(irda_seqpacket_ops) = {
         .family =       PF_IRDA,
         .owner =        THIS_MODULE,
         .release =      irda_release,
@@ -2505,7 +2506,7 @@ static struct proto_ops SOCKOPS_WRAPPED(irda_seqpacket_ops) = {
         .sendpage =     sock_no_sendpage,
 };
 
-static struct proto_ops SOCKOPS_WRAPPED(irda_dgram_ops) = {
+static const struct proto_ops SOCKOPS_WRAPPED(irda_dgram_ops) = {
         .family =       PF_IRDA,
         .owner =        THIS_MODULE,
         .release =      irda_release,
@@ -2527,7 +2528,7 @@ static struct proto_ops SOCKOPS_WRAPPED(irda_dgram_ops) = {
 };
 
 #ifdef CONFIG_IRDA_ULTRA
-static struct proto_ops SOCKOPS_WRAPPED(irda_ultra_ops) = {
+static const struct proto_ops SOCKOPS_WRAPPED(irda_ultra_ops) = {
         .family =       PF_IRDA,
         .owner =        THIS_MODULE,
         .release =      irda_release,
diff --git a/net/key/af_key.c b/net/key/af_key.c
index 39031684b65c..52efd04cbedb 100644
--- a/net/key/af_key.c
+++ b/net/key/af_key.c
@@ -113,7 +113,7 @@ static __inline__ void pfkey_unlock_table(void)
 }
 
 
-static struct proto_ops pfkey_ops;
+static const struct proto_ops pfkey_ops;
 
 static void pfkey_insert(struct sock *sk)
 {
@@ -336,6 +336,7 @@ static u8 sadb_ext_min_len[] = {
         [SADB_X_EXT_NAT_T_SPORT]        = (u8) sizeof(struct sadb_x_nat_t_port),
         [SADB_X_EXT_NAT_T_DPORT]        = (u8) sizeof(struct sadb_x_nat_t_port),
         [SADB_X_EXT_NAT_T_OA]           = (u8) sizeof(struct sadb_address),
+        [SADB_X_EXT_SEC_CTX]            = (u8) sizeof(struct sadb_x_sec_ctx),
 };
 
 /* Verify sadb_address_{len,prefixlen} against sa_family.  */
@@ -383,6 +384,55 @@ static int verify_address_len(void *p)
         return 0;
 }
 
+static inline int pfkey_sec_ctx_len(struct sadb_x_sec_ctx *sec_ctx)
+{
+        int len = 0;
+
+        len += sizeof(struct sadb_x_sec_ctx);
+        len += sec_ctx->sadb_x_ctx_len;
+        len += sizeof(uint64_t) - 1;
+        len /= sizeof(uint64_t);
+
+        return len;
+}
+
+static inline int verify_sec_ctx_len(void *p)
+{
+        struct sadb_x_sec_ctx *sec_ctx = (struct sadb_x_sec_ctx *)p;
+        int len;
+
+        if (sec_ctx->sadb_x_ctx_len > PAGE_SIZE)
+                return -EINVAL;
+
+        len = pfkey_sec_ctx_len(sec_ctx);
+
+        if (sec_ctx->sadb_x_sec_len != len)
+                return -EINVAL;
+
+        return 0;
+}
+
+static inline struct xfrm_user_sec_ctx *pfkey_sadb2xfrm_user_sec_ctx(struct sadb_x_sec_ctx *sec_ctx)
+{
+        struct xfrm_user_sec_ctx *uctx = NULL;
+        int ctx_size = sec_ctx->sadb_x_ctx_len;
+
+        uctx = kmalloc((sizeof(*uctx)+ctx_size), GFP_KERNEL);
+
+        if (!uctx)
+                return NULL;
+
+        uctx->len = pfkey_sec_ctx_len(sec_ctx);
+        uctx->exttype = sec_ctx->sadb_x_sec_exttype;
+        uctx->ctx_doi = sec_ctx->sadb_x_ctx_doi;
+        uctx->ctx_alg = sec_ctx->sadb_x_ctx_alg;
+        uctx->ctx_len = sec_ctx->sadb_x_ctx_len;
+        memcpy(uctx + 1, sec_ctx + 1,
+               uctx->ctx_len);
+
+        return uctx;
+}
+
 static int present_and_same_family(struct sadb_address *src,
                                    struct sadb_address *dst)
 {
@@ -438,6 +488,10 @@ static int parse_exthdrs(struct sk_buff *skb, struct sadb_msg *hdr, void **ext_h
                                 if (verify_address_len(p))
                                         return -EINVAL;
                         }                               
+                        if (ext_type == SADB_X_EXT_SEC_CTX) {
+                                if (verify_sec_ctx_len(p))
+                                        return -EINVAL;
+                        }
                         ext_hdrs[ext_type-1] = p;
                 }
                 p   += ext_len;
@@ -586,6 +640,9 @@ static struct sk_buff * pfkey_xfrm_state2msg(struct xfrm_state *x, int add_keys,
         struct sadb_key *key;
         struct sadb_x_sa2 *sa2;
         struct sockaddr_in *sin;
+        struct sadb_x_sec_ctx *sec_ctx;
+        struct xfrm_sec_ctx *xfrm_ctx;
+        int ctx_size = 0;
 #if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
         struct sockaddr_in6 *sin6;
 #endif
@@ -609,6 +666,12 @@ static struct sk_buff * pfkey_xfrm_state2msg(struct xfrm_state *x, int add_keys,
                         sizeof(struct sadb_address)*2 + 
                                 sockaddr_size*2 +
                                         sizeof(struct sadb_x_sa2);
+
+        if ((xfrm_ctx = x->security)) {
+                ctx_size = PFKEY_ALIGN8(xfrm_ctx->ctx_len);
+                size += sizeof(struct sadb_x_sec_ctx) + ctx_size;
+        }
+
         /* identity & sensitivity */
 
         if ((x->props.family == AF_INET &&
@@ -899,6 +962,20 @@ static struct sk_buff * pfkey_xfrm_state2msg(struct xfrm_state *x, int add_keys,
                 n_port->sadb_x_nat_t_port_reserved = 0;
         }
 
+        /* security context */
+        if (xfrm_ctx) {
+                sec_ctx = (struct sadb_x_sec_ctx *) skb_put(skb,
+                                sizeof(struct sadb_x_sec_ctx) + ctx_size);
+                sec_ctx->sadb_x_sec_len =
+                  (sizeof(struct sadb_x_sec_ctx) + ctx_size) / sizeof(uint64_t);
+                sec_ctx->sadb_x_sec_exttype = SADB_X_EXT_SEC_CTX;
+                sec_ctx->sadb_x_ctx_doi = xfrm_ctx->ctx_doi;
+                sec_ctx->sadb_x_ctx_alg = xfrm_ctx->ctx_alg;
+                sec_ctx->sadb_x_ctx_len = xfrm_ctx->ctx_len;
+                memcpy(sec_ctx + 1, xfrm_ctx->ctx_str,
+                       xfrm_ctx->ctx_len);
+        }
+
         return skb;
 }
 
@@ -909,6 +986,7 @@ static struct xfrm_state * pfkey_msg2xfrm_state(struct sadb_msg *hdr,
         struct sadb_lifetime *lifetime;
         struct sadb_sa *sa;
         struct sadb_key *key;
+        struct sadb_x_sec_ctx *sec_ctx;
         uint16_t proto;
         int err;
         
@@ -993,6 +1071,21 @@ static struct xfrm_state * pfkey_msg2xfrm_state(struct sadb_msg *hdr,
                 x->lft.soft_add_expires_seconds = lifetime->sadb_lifetime_addtime;
                 x->lft.soft_use_expires_seconds = lifetime->sadb_lifetime_usetime;
         }
+
+        sec_ctx = (struct sadb_x_sec_ctx *) ext_hdrs[SADB_X_EXT_SEC_CTX-1];
+        if (sec_ctx != NULL) {
+                struct xfrm_user_sec_ctx *uctx = pfkey_sadb2xfrm_user_sec_ctx(sec_ctx);
+
+                if (!uctx)
+                        goto out;
+
+                err = security_xfrm_state_alloc(x, uctx);
+                kfree(uctx);
+
+                if (err)
+                        goto out;
+        }
+
         key = (struct sadb_key*) ext_hdrs[SADB_EXT_KEY_AUTH-1];
         if (sa->sadb_sa_auth) {
                 int keysize = 0;
@@ -1720,6 +1813,18 @@ parse_ipsecrequests(struct xfrm_policy *xp, struct sadb_x_policy *pol)
         return 0;
 }
 
+static inline int pfkey_xfrm_policy2sec_ctx_size(struct xfrm_policy *xp)
+{
+  struct xfrm_sec_ctx *xfrm_ctx = xp->security;
+
+        if (xfrm_ctx) {
+                int len = sizeof(struct sadb_x_sec_ctx);
+                len += xfrm_ctx->ctx_len;
+                return PFKEY_ALIGN8(len);
+        }
+        return 0;
+}
+
 static int pfkey_xfrm_policy2msg_size(struct xfrm_policy *xp)
 {
         int sockaddr_size = pfkey_sockaddr_size(xp->family);
@@ -1733,7 +1838,8 @@ static int pfkey_xfrm_policy2msg_size(struct xfrm_policy *xp)
                 (sockaddr_size * 2) +
                 sizeof(struct sadb_x_policy) +
                 (xp->xfrm_nr * (sizeof(struct sadb_x_ipsecrequest) +
-                                (socklen * 2)));
+                                (socklen * 2))) +
+                pfkey_xfrm_policy2sec_ctx_size(xp);
 }
 
 static struct sk_buff * pfkey_xfrm_policy2msg_prep(struct xfrm_policy *xp)
@@ -1757,6 +1863,8 @@ static void pfkey_xfrm_policy2msg(struct sk_buff *skb, struct xfrm_policy *xp, i
         struct sadb_lifetime *lifetime;
         struct sadb_x_policy *pol;
         struct sockaddr_in   *sin;
+        struct sadb_x_sec_ctx *sec_ctx;
+        struct xfrm_sec_ctx *xfrm_ctx;
 #if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
         struct sockaddr_in6  *sin6;
 #endif
@@ -1941,6 +2049,21 @@ static void pfkey_xfrm_policy2msg(struct sk_buff *skb, struct xfrm_policy *xp, i
                         }
                 }
         }
+
+        /* security context */
+        if ((xfrm_ctx = xp->security)) {
+                int ctx_size = pfkey_xfrm_policy2sec_ctx_size(xp);
+
+                sec_ctx = (struct sadb_x_sec_ctx *) skb_put(skb, ctx_size);
+                sec_ctx->sadb_x_sec_len = ctx_size / sizeof(uint64_t);
+                sec_ctx->sadb_x_sec_exttype = SADB_X_EXT_SEC_CTX;
+                sec_ctx->sadb_x_ctx_doi = xfrm_ctx->ctx_doi;
+                sec_ctx->sadb_x_ctx_alg = xfrm_ctx->ctx_alg;
+                sec_ctx->sadb_x_ctx_len = xfrm_ctx->ctx_len;
+                memcpy(sec_ctx + 1, xfrm_ctx->ctx_str,
+                       xfrm_ctx->ctx_len);
+        }
+
         hdr->sadb_msg_len = size / sizeof(uint64_t);
         hdr->sadb_msg_reserved = atomic_read(&xp->refcnt);
 }
@@ -1976,12 +2099,13 @@ out:
 
 static int pfkey_spdadd(struct sock *sk, struct sk_buff *skb, struct sadb_msg *hdr, void **ext_hdrs)
 {
-        int err;
+        int err = 0;
         struct sadb_lifetime *lifetime;
         struct sadb_address *sa;
         struct sadb_x_policy *pol;
         struct xfrm_policy *xp;
         struct km_event c;
+        struct sadb_x_sec_ctx *sec_ctx;
 
         if (!present_and_same_family(ext_hdrs[SADB_EXT_ADDRESS_SRC-1],
                                      ext_hdrs[SADB_EXT_ADDRESS_DST-1]) ||
@@ -2028,6 +2152,22 @@ static int pfkey_spdadd(struct sock *sk, struct sk_buff *skb, struct sadb_msg *h
         if (xp->selector.dport)
                 xp->selector.dport_mask = ~0;
 
+        sec_ctx = (struct sadb_x_sec_ctx *) ext_hdrs[SADB_X_EXT_SEC_CTX-1];
+        if (sec_ctx != NULL) {
+                struct xfrm_user_sec_ctx *uctx = pfkey_sadb2xfrm_user_sec_ctx(sec_ctx);
+
+                if (!uctx) {
+                        err = -ENOBUFS;
+                        goto out;
+                }
+
+                err = security_xfrm_policy_alloc(xp, uctx);
+                kfree(uctx);
+
+                if (err)
+                        goto out;
+        }
+
         xp->lft.soft_byte_limit = XFRM_INF;
         xp->lft.hard_byte_limit = XFRM_INF;
         xp->lft.soft_packet_limit = XFRM_INF;
@@ -2051,10 +2191,9 @@ static int pfkey_spdadd(struct sock *sk, struct sk_buff *skb, struct sadb_msg *h
 
         err = xfrm_policy_insert(pol->sadb_x_policy_dir-1, xp,
                                  hdr->sadb_msg_type != SADB_X_SPDUPDATE);
-        if (err) {
-                kfree(xp);
-                return err;
-        }
+
+        if (err)
+                goto out;
 
         if (hdr->sadb_msg_type == SADB_X_SPDUPDATE)
                 c.event = XFRM_MSG_UPDPOLICY;
@@ -2069,6 +2208,7 @@ static int pfkey_spdadd(struct sock *sk, struct sk_buff *skb, struct sadb_msg *h
         return 0;
 
 out:
+        security_xfrm_policy_free(xp);
         kfree(xp);
         return err;
 }
@@ -2078,9 +2218,10 @@ static int pfkey_spddelete(struct sock *sk, struct sk_buff *skb, struct sadb_msg
         int err;
         struct sadb_address *sa;
         struct sadb_x_policy *pol;
-        struct xfrm_policy *xp;
+        struct xfrm_policy *xp, tmp;
         struct xfrm_selector sel;
         struct km_event c;
+        struct sadb_x_sec_ctx *sec_ctx;
 
         if (!present_and_same_family(ext_hdrs[SADB_EXT_ADDRESS_SRC-1],
                                      ext_hdrs[SADB_EXT_ADDRESS_DST-1]) ||
@@ -2109,7 +2250,24 @@ static int pfkey_spddelete(struct sock *sk, struct sk_buff *skb, struct sadb_msg
         if (sel.dport)
                 sel.dport_mask = ~0;
 
-        xp = xfrm_policy_bysel(pol->sadb_x_policy_dir-1, &sel, 1);
+        sec_ctx = (struct sadb_x_sec_ctx *) ext_hdrs[SADB_X_EXT_SEC_CTX-1];
+        memset(&tmp, 0, sizeof(struct xfrm_policy));
+
+        if (sec_ctx != NULL) {
+                struct xfrm_user_sec_ctx *uctx = pfkey_sadb2xfrm_user_sec_ctx(sec_ctx);
+
+                if (!uctx)
+                        return -ENOMEM;
+
+                err = security_xfrm_policy_alloc(&tmp, uctx);
+                kfree(uctx);
+
+                if (err)
+                        return err;
+        }
+
+        xp = xfrm_policy_bysel_ctx(pol->sadb_x_policy_dir-1, &sel, tmp.security, 1);
+        security_xfrm_policy_free(&tmp);
         if (xp == NULL)
                 return -ENOENT;
 
@@ -2660,6 +2818,7 @@ static struct xfrm_policy *pfkey_compile_policy(u16 family, int opt,
 {
         struct xfrm_policy *xp;
         struct sadb_x_policy *pol = (struct sadb_x_policy*)data;
+        struct sadb_x_sec_ctx *sec_ctx;
 
         switch (family) {
         case AF_INET:
@@ -2709,10 +2868,32 @@ static struct xfrm_policy *pfkey_compile_policy(u16 family, int opt,
             (*dir = parse_ipsecrequests(xp, pol)) < 0)
                 goto out;
 
+        /* security context too */
+        if (len >= (pol->sadb_x_policy_len*8 +
+            sizeof(struct sadb_x_sec_ctx))) {
+                char *p = (char *)pol;
+                struct xfrm_user_sec_ctx *uctx;
+
+                p += pol->sadb_x_policy_len*8;
+                sec_ctx = (struct sadb_x_sec_ctx *)p;
+                if (len < pol->sadb_x_policy_len*8 +
+                    sec_ctx->sadb_x_sec_len)
+                        goto out;
+                if ((*dir = verify_sec_ctx_len(p)))
+                        goto out;
+                uctx = pfkey_sadb2xfrm_user_sec_ctx(sec_ctx);
+                *dir = security_xfrm_policy_alloc(xp, uctx);
+                kfree(uctx);
+
+                if (*dir)
+                        goto out;
+        }
+
         *dir = pol->sadb_x_policy_dir-1;
         return xp;
 
 out:
+        security_xfrm_policy_free(xp);
         kfree(xp);
         return NULL;
 }
@@ -2946,7 +3127,7 @@ out:
         return err;
 }
 
-static struct proto_ops pfkey_ops = {
+static const struct proto_ops pfkey_ops = {
         .family         =       PF_KEY,
         .owner          =       THIS_MODULE,
         /* Operations that make no sense on pfkey sockets. */
diff --git a/net/llc/af_llc.c b/net/llc/af_llc.c
index c3f0b0783453..8171c53bc0ed 100644
--- a/net/llc/af_llc.c
+++ b/net/llc/af_llc.c
@@ -36,7 +36,7 @@
 static u16 llc_ui_sap_last_autoport = LLC_SAP_DYN_START;
 static u16 llc_ui_sap_link_no_max[256];
 static struct sockaddr_llc llc_ui_addrnull;
-static struct proto_ops llc_ui_ops;
+static const struct proto_ops llc_ui_ops;
 
 static int llc_ui_wait_for_conn(struct sock *sk, long timeout);
 static int llc_ui_wait_for_disc(struct sock *sk, long timeout);
@@ -566,10 +566,9 @@ static int llc_wait_data(struct sock *sk, long timeo)
                 /*
                  * POSIX 1003.1g mandates this order.
                  */
-                if (sk->sk_err) {
-                        rc = sock_error(sk);
+                rc = sock_error(sk);
+                if (rc)
                         break;
-                }
                 rc = 0;
                 if (sk->sk_shutdown & RCV_SHUTDOWN)
                         break;
@@ -960,7 +959,7 @@ out:
 static int llc_ui_ioctl(struct socket *sock, unsigned int cmd,
                         unsigned long arg)
 {
-        return dev_ioctl(cmd, (void __user *)arg);
+        return -ENOIOCTLCMD;
 }
 
 /**
@@ -1099,7 +1098,7 @@ static struct net_proto_family llc_ui_family_ops = {
         .owner  = THIS_MODULE,
 };
 
-static struct proto_ops llc_ui_ops = {
+static const struct proto_ops llc_ui_ops = {
         .family      = PF_LLC,
         .owner       = THIS_MODULE,
         .release     = llc_ui_release,
diff --git a/net/netfilter/nfnetlink_log.c b/net/netfilter/nfnetlink_log.c
index cba63729313d..e10512e229b6 100644
--- a/net/netfilter/nfnetlink_log.c
+++ b/net/netfilter/nfnetlink_log.c
@@ -151,7 +151,7 @@ instance_create(u_int16_t group_num, int pid)
                 goto out_unlock;
 
         INIT_HLIST_NODE(&inst->hlist);
-        inst->lock = SPIN_LOCK_UNLOCKED;
+        spin_lock_init(&inst->lock);
         /* needs to be two, since we _put() after creation */
         atomic_set(&inst->use, 2);
 
diff --git a/net/netfilter/nfnetlink_queue.c b/net/netfilter/nfnetlink_queue.c
index f28460b61e47..55afdda3d940 100644
--- a/net/netfilter/nfnetlink_queue.c
+++ b/net/netfilter/nfnetlink_queue.c
@@ -148,7 +148,7 @@ instance_create(u_int16_t queue_num, int pid)
         atomic_set(&inst->id_sequence, 0);
         /* needs to be two, since we _put() after creation */
         atomic_set(&inst->use, 2);
-        inst->lock = SPIN_LOCK_UNLOCKED;
+        spin_lock_init(&inst->lock);
         INIT_LIST_HEAD(&inst->queue_list);
 
         if (!try_module_get(THIS_MODULE))
diff --git a/net/netlink/af_netlink.c b/net/netlink/af_netlink.c
index 96020d7087e8..7849cac14d3a 100644
--- a/net/netlink/af_netlink.c
+++ b/net/netlink/af_netlink.c
@@ -293,7 +293,7 @@ static inline int nl_pid_hash_dilute(struct nl_pid_hash *hash, int len)
         return 0;
 }
 
-static struct proto_ops netlink_ops;
+static const struct proto_ops netlink_ops;
 
 static int netlink_insert(struct sock *sk, u32 pid)
 {
@@ -1656,7 +1656,7 @@ int netlink_unregister_notifier(struct notifier_block *nb)
         return notifier_chain_unregister(&netlink_chain, nb);
 }
                 
-static struct proto_ops netlink_ops = {
+static const struct proto_ops netlink_ops = {
         .family =       PF_NETLINK,
         .owner =        THIS_MODULE,
         .release =      netlink_release,
diff --git a/net/netlink/genetlink.c b/net/netlink/genetlink.c
index 287cfcc56951..3b1378498d50 100644
--- a/net/netlink/genetlink.c
+++ b/net/netlink/genetlink.c
@@ -441,7 +441,7 @@ errout:
 }
 
 static struct sk_buff *ctrl_build_msg(struct genl_family *family, u32 pid,
-                                      int seq, int cmd)
+                                      int seq, u8 cmd)
 {
         struct sk_buff *skb;
         int err;
diff --git a/net/netrom/af_netrom.c b/net/netrom/af_netrom.c
index e5d82d711cae..63b0e4afeb33 100644
--- a/net/netrom/af_netrom.c
+++ b/net/netrom/af_netrom.c
@@ -63,7 +63,7 @@ static unsigned short circuit = 0x101;
 static HLIST_HEAD(nr_list);
 static DEFINE_SPINLOCK(nr_list_lock);
 
-static struct proto_ops nr_proto_ops;
+static const struct proto_ops nr_proto_ops;
 
 /*
  *      Socket removal during an interrupt is now safe.
@@ -1166,10 +1166,11 @@ static int nr_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg)
         void __user *argp = (void __user *)arg;
         int ret;
 
-        lock_sock(sk);
         switch (cmd) {
         case TIOCOUTQ: {
                 long amount;
+
+                lock_sock(sk);
                 amount = sk->sk_sndbuf - atomic_read(&sk->sk_wmem_alloc);
                 if (amount < 0)
                         amount = 0;
@@ -1180,6 +1181,8 @@ static int nr_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg)
         case TIOCINQ: {
                 struct sk_buff *skb;
                 long amount = 0L;
+
+                lock_sock(sk);
                 /* These two are safe on a single CPU system as only user tasks fiddle here */
                 if ((skb = skb_peek(&sk->sk_receive_queue)) != NULL)
                         amount = skb->len;
@@ -1188,6 +1191,7 @@ static int nr_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg)
         }
 
         case SIOCGSTAMP:
+                lock_sock(sk);
                 ret = sock_get_timestamp(sk, argp);
                 release_sock(sk);
                 return ret;
@@ -1202,21 +1206,17 @@ static int nr_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg)
         case SIOCSIFNETMASK:
         case SIOCGIFMETRIC:
         case SIOCSIFMETRIC:
-                release_sock(sk);
                 return -EINVAL;
 
         case SIOCADDRT:
         case SIOCDELRT:
         case SIOCNRDECOBS:
-                release_sock(sk);
                 if (!capable(CAP_NET_ADMIN)) return -EPERM;
                 return nr_rt_ioctl(cmd, argp);
 
         default:
-                release_sock(sk);
-                return dev_ioctl(cmd, argp);
+                return -ENOIOCTLCMD;
         }
-        release_sock(sk);
 
         return 0;
 }
@@ -1337,7 +1337,7 @@ static struct net_proto_family nr_family_ops = {
         .owner          =       THIS_MODULE,
 };
 
-static struct proto_ops nr_proto_ops = {
+static const struct proto_ops nr_proto_ops = {
         .family         =       PF_NETROM,
         .owner          =       THIS_MODULE,
         .release        =       nr_release,
diff --git a/net/nonet.c b/net/nonet.c
index e5241dceaa57..1230f0ae832e 100644
--- a/net/nonet.c
+++ b/net/nonet.c
@@ -14,11 +14,6 @@
 #include <linux/init.h>
 #include <linux/kernel.h>
 
-void __init sock_init(void)
-{
-        printk(KERN_INFO "Linux NoNET1.0 for Linux 2.6\n");
-}
-
 static int sock_no_open(struct inode *irrelevant, struct file *dontcare)
 {
         return -ENXIO;
diff --git a/net/packet/af_packet.c b/net/packet/af_packet.c
index 3e2462760413..f69e5ed9bd06 100644
--- a/net/packet/af_packet.c
+++ b/net/packet/af_packet.c
@@ -251,10 +251,10 @@ static void packet_sock_destruct(struct sock *sk)
 }
 
 
-static struct proto_ops packet_ops;
+static const struct proto_ops packet_ops;
 
 #ifdef CONFIG_SOCK_PACKET
-static struct proto_ops packet_ops_spkt;
+static const struct proto_ops packet_ops_spkt;
 
 static int packet_rcv_spkt(struct sk_buff *skb, struct net_device *dev,  struct packet_type *pt, struct net_device *orig_dev)
 {
@@ -1521,7 +1521,7 @@ static int packet_ioctl(struct socket *sock, unsigned int cmd,
 #endif
 
                 default:
-                        return dev_ioctl(cmd, (void __user *)arg);
+                        return -ENOIOCTLCMD;
         }
         return 0;
 }
@@ -1784,7 +1784,7 @@ out:
 
 
 #ifdef CONFIG_SOCK_PACKET
-static struct proto_ops packet_ops_spkt = {
+static const struct proto_ops packet_ops_spkt = {
         .family =       PF_PACKET,
         .owner =        THIS_MODULE,
         .release =      packet_release,
@@ -1806,7 +1806,7 @@ static struct proto_ops packet_ops_spkt = {
 };
 #endif
 
-static struct proto_ops packet_ops = {
+static const struct proto_ops packet_ops = {
         .family =       PF_PACKET,
         .owner =        THIS_MODULE,
         .release =      packet_release,
diff --git a/net/rose/af_rose.c b/net/rose/af_rose.c
index 829fdbc4400b..63090be2315a 100644
--- a/net/rose/af_rose.c
+++ b/net/rose/af_rose.c
@@ -1320,7 +1320,7 @@ static int rose_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg)
                 return 0;
 
         default:
-                return dev_ioctl(cmd, argp);
+                return -ENOIOCTLCMD;
         }
 
         return 0;
diff --git a/net/sched/sch_netem.c b/net/sched/sch_netem.c
index 82fb07aa06a5..ba5283204837 100644
--- a/net/sched/sch_netem.c
+++ b/net/sched/sch_netem.c
@@ -25,7 +25,7 @@
 
 #include <net/pkt_sched.h>
 
-#define VERSION "1.1"
+#define VERSION "1.2"
 
 /*      Network Emulation Queuing algorithm.
         ====================================
@@ -65,11 +65,12 @@ struct netem_sched_data {
         u32 jitter;
         u32 duplicate;
         u32 reorder;
+        u32 corrupt;
 
         struct crndstate {
                 unsigned long last;
                 unsigned long rho;
-        } delay_cor, loss_cor, dup_cor, reorder_cor;
+        } delay_cor, loss_cor, dup_cor, reorder_cor, corrupt_cor;
 
         struct disttable {
                 u32  size;
@@ -183,6 +184,23 @@ static int netem_enqueue(struct sk_buff *skb, struct Qdisc *sch)
                 q->duplicate = dupsave;
         }
 
+        /*
+         * Randomized packet corruption.
+         * Make copy if needed since we are modifying
+         * If packet is going to be hardware checksummed, then
+         * do it now in software before we mangle it.
+         */
+        if (q->corrupt && q->corrupt >= get_crandom(&q->corrupt_cor)) {
+                if (!(skb = skb_unshare(skb, GFP_ATOMIC))
+                    || (skb->ip_summed == CHECKSUM_HW
+                        && skb_checksum_help(skb, 0))) {
+                        sch->qstats.drops++;
+                        return NET_XMIT_DROP;
+                }
+
+                skb->data[net_random() % skb_headlen(skb)] ^= 1<<(net_random() % 8);
+        }
+
         if (q->gap == 0                 /* not doing reordering */
             || q->counter < q->gap      /* inside last reordering gap */
             || q->reorder < get_crandom(&q->reorder_cor)) {
@@ -382,6 +400,20 @@ static int get_reorder(struct Qdisc *sch, const struct rtattr *attr)
         return 0;
 }
 
+static int get_corrupt(struct Qdisc *sch, const struct rtattr *attr)
+{
+        struct netem_sched_data *q = qdisc_priv(sch);
+        const struct tc_netem_corrupt *r = RTA_DATA(attr);
+
+        if (RTA_PAYLOAD(attr) != sizeof(*r))
+                return -EINVAL;
+
+        q->corrupt = r->probability;
+        init_crandom(&q->corrupt_cor, r->correlation);
+        return 0;
+}
+
+/* Parse netlink message to set options */
 static int netem_change(struct Qdisc *sch, struct rtattr *opt)
 {
         struct netem_sched_data *q = qdisc_priv(sch);
@@ -432,13 +464,19 @@ static int netem_change(struct Qdisc *sch, struct rtattr *opt)
                         if (ret)
                                 return ret;
                 }
+
                 if (tb[TCA_NETEM_REORDER-1]) {
                         ret = get_reorder(sch, tb[TCA_NETEM_REORDER-1]);
                         if (ret)
                                 return ret;
                 }
-        }
 
+                if (tb[TCA_NETEM_CORRUPT-1]) {
+                        ret = get_corrupt(sch, tb[TCA_NETEM_CORRUPT-1]);
+                        if (ret)
+                                return ret;
+                }
+        }
 
         return 0;
 }
@@ -564,6 +602,7 @@ static int netem_dump(struct Qdisc *sch, struct sk_buff *skb)
         struct tc_netem_qopt qopt;
         struct tc_netem_corr cor;
         struct tc_netem_reorder reorder;
+        struct tc_netem_corrupt corrupt;
 
         qopt.latency = q->latency;
         qopt.jitter = q->jitter;
@@ -582,6 +621,10 @@ static int netem_dump(struct Qdisc *sch, struct sk_buff *skb)
         reorder.correlation = q->reorder_cor.rho;
         RTA_PUT(skb, TCA_NETEM_REORDER, sizeof(reorder), &reorder);
 
+        corrupt.probability = q->corrupt;
+        corrupt.correlation = q->corrupt_cor.rho;
+        RTA_PUT(skb, TCA_NETEM_CORRUPT, sizeof(corrupt), &corrupt);
+
         rta->rta_len = skb->tail - b;
 
         return skb->len;
diff --git a/net/sched/sch_teql.c b/net/sched/sch_teql.c
index 6cf0342706b5..c4a2a8c4c339 100644
--- a/net/sched/sch_teql.c
+++ b/net/sched/sch_teql.c
@@ -22,6 +22,7 @@
 #include <linux/in.h>
 #include <linux/errno.h>
 #include <linux/interrupt.h>
+#include <linux/if_arp.h>
 #include <linux/if_ether.h>
 #include <linux/inet.h>
 #include <linux/netdevice.h>
diff --git a/net/sctp/associola.c b/net/sctp/associola.c
index dec68a604773..9d05e13e92f6 100644
--- a/net/sctp/associola.c
+++ b/net/sctp/associola.c
@@ -110,7 +110,6 @@ static struct sctp_association *sctp_association_init(struct sctp_association *a
         asoc->cookie_life.tv_sec = sp->assocparams.sasoc_cookie_life / 1000;
         asoc->cookie_life.tv_usec = (sp->assocparams.sasoc_cookie_life % 1000)
                                         * 1000;
-        asoc->pmtu = 0;
         asoc->frag_point = 0;
 
         /* Set the association max_retrans and RTO values from the
@@ -123,6 +122,25 @@ static struct sctp_association *sctp_association_init(struct sctp_association *a
 
         asoc->overall_error_count = 0;
 
+        /* Initialize the association's heartbeat interval based on the
+         * sock configured value.
+         */
+        asoc->hbinterval = msecs_to_jiffies(sp->hbinterval);
+
+        /* Initialize path max retrans value. */
+        asoc->pathmaxrxt = sp->pathmaxrxt;
+
+        /* Initialize default path MTU. */
+        asoc->pathmtu = sp->pathmtu;
+
+        /* Set association default SACK delay */
+        asoc->sackdelay = msecs_to_jiffies(sp->sackdelay);
+
+        /* Set the association default flags controlling
+         * Heartbeat, SACK delay, and Path MTU Discovery.
+         */
+        asoc->param_flags = sp->param_flags;
+
         /* Initialize the maximum mumber of new data packets that can be sent
          * in a burst.
          */
@@ -144,8 +162,7 @@ static struct sctp_association *sctp_association_init(struct sctp_association *a
                 = 5 * asoc->rto_max;
 
         asoc->timeouts[SCTP_EVENT_TIMEOUT_HEARTBEAT] = 0;
-        asoc->timeouts[SCTP_EVENT_TIMEOUT_SACK] =
-                SCTP_DEFAULT_TIMEOUT_SACK;
+        asoc->timeouts[SCTP_EVENT_TIMEOUT_SACK] = asoc->sackdelay;
         asoc->timeouts[SCTP_EVENT_TIMEOUT_AUTOCLOSE] =
                 sp->autoclose * HZ;
         
@@ -540,23 +557,46 @@ struct sctp_transport *sctp_assoc_add_peer(struct sctp_association *asoc,
 
         sctp_transport_set_owner(peer, asoc);
 
+        /* Initialize the peer's heartbeat interval based on the
+         * association configured value.
+         */
+        peer->hbinterval = asoc->hbinterval;
+
+        /* Set the path max_retrans.  */
+        peer->pathmaxrxt = asoc->pathmaxrxt;
+
+        /* Initialize the peer's SACK delay timeout based on the
+         * association configured value.
+         */
+        peer->sackdelay = asoc->sackdelay;
+
+        /* Enable/disable heartbeat, SACK delay, and path MTU discovery
+         * based on association setting.
+         */
+        peer->param_flags = asoc->param_flags;
+
         /* Initialize the pmtu of the transport. */
-        sctp_transport_pmtu(peer);
+        if (peer->param_flags & SPP_PMTUD_ENABLE)
+                sctp_transport_pmtu(peer);
+        else if (asoc->pathmtu)
+                peer->pathmtu = asoc->pathmtu;
+        else
+                peer->pathmtu = SCTP_DEFAULT_MAXSEGMENT;
 
         /* If this is the first transport addr on this association,
          * initialize the association PMTU to the peer's PMTU.
          * If not and the current association PMTU is higher than the new
          * peer's PMTU, reset the association PMTU to the new peer's PMTU.
          */
-        if (asoc->pmtu)
-                asoc->pmtu = min_t(int, peer->pmtu, asoc->pmtu);
+        if (asoc->pathmtu)
+                asoc->pathmtu = min_t(int, peer->pathmtu, asoc->pathmtu);
         else
-                asoc->pmtu = peer->pmtu;
+                asoc->pathmtu = peer->pathmtu;
 
         SCTP_DEBUG_PRINTK("sctp_assoc_add_peer:association %p PMTU set to "
-                          "%d\n", asoc, asoc->pmtu);
+                          "%d\n", asoc, asoc->pathmtu);
 
-        asoc->frag_point = sctp_frag_point(sp, asoc->pmtu);
+        asoc->frag_point = sctp_frag_point(sp, asoc->pathmtu);
 
         /* The asoc->peer.port might not be meaningful yet, but
          * initialize the packet structure anyway.
@@ -574,7 +614,7 @@ struct sctp_transport *sctp_assoc_add_peer(struct sctp_association *asoc,
          *   (for example, implementations MAY use the size of the
          *   receiver advertised window).
          */
-        peer->cwnd = min(4*asoc->pmtu, max_t(__u32, 2*asoc->pmtu, 4380));
+        peer->cwnd = min(4*asoc->pathmtu, max_t(__u32, 2*asoc->pathmtu, 4380));
 
         /* At this point, we may not have the receiver's advertised window,
          * so initialize ssthresh to the default value and it will be set
@@ -585,17 +625,6 @@ struct sctp_transport *sctp_assoc_add_peer(struct sctp_association *asoc,
         peer->partial_bytes_acked = 0;
         peer->flight_size = 0;
 
-        /* By default, enable heartbeat for peer address. */
-        peer->hb_allowed = 1;
-
-        /* Initialize the peer's heartbeat interval based on the
-         * sock configured value.
-         */
-        peer->hb_interval = msecs_to_jiffies(sp->paddrparam.spp_hbinterval);
-
-        /* Set the path max_retrans.  */
-        peer->max_retrans = sp->paddrparam.spp_pathmaxrxt;
-
         /* Set the transport's RTO.initial value */
         peer->rto = asoc->rto_initial;
 
@@ -1155,18 +1184,18 @@ void sctp_assoc_sync_pmtu(struct sctp_association *asoc)
         /* Get the lowest pmtu of all the transports. */
         list_for_each(pos, &asoc->peer.transport_addr_list) {
                 t = list_entry(pos, struct sctp_transport, transports);
-                if (!pmtu || (t->pmtu < pmtu))
-                        pmtu = t->pmtu;
+                if (!pmtu || (t->pathmtu < pmtu))
+                        pmtu = t->pathmtu;
         }
 
         if (pmtu) {
                 struct sctp_sock *sp = sctp_sk(asoc->base.sk);
-                asoc->pmtu = pmtu;
+                asoc->pathmtu = pmtu;
                 asoc->frag_point = sctp_frag_point(sp, pmtu);
         }
 
         SCTP_DEBUG_PRINTK("%s: asoc:%p, pmtu:%d, frag_point:%d\n",
-                          __FUNCTION__, asoc, asoc->pmtu, asoc->frag_point);
+                          __FUNCTION__, asoc, asoc->pathmtu, asoc->frag_point);
 }
 
 /* Should we send a SACK to update our peer? */
@@ -1179,7 +1208,7 @@ static inline int sctp_peer_needs_update(struct sctp_association *asoc)
         case SCTP_STATE_SHUTDOWN_SENT:
                 if ((asoc->rwnd > asoc->a_rwnd) &&
                     ((asoc->rwnd - asoc->a_rwnd) >=
-                     min_t(__u32, (asoc->base.sk->sk_rcvbuf >> 1), asoc->pmtu)))
+                     min_t(__u32, (asoc->base.sk->sk_rcvbuf >> 1), asoc->pathmtu)))
                         return 1;
                 break;
         default:
diff --git a/net/sctp/input.c b/net/sctp/input.c
index b24ff2c1aef5..238f1bffa684 100644
--- a/net/sctp/input.c
+++ b/net/sctp/input.c
@@ -305,18 +305,36 @@ int sctp_backlog_rcv(struct sock *sk, struct sk_buff *skb)
 void sctp_icmp_frag_needed(struct sock *sk, struct sctp_association *asoc,
                            struct sctp_transport *t, __u32 pmtu)
 {
-        if (unlikely(pmtu < SCTP_DEFAULT_MINSEGMENT)) {
-                printk(KERN_WARNING "%s: Reported pmtu %d too low, "
-                       "using default minimum of %d\n", __FUNCTION__, pmtu,
-                       SCTP_DEFAULT_MINSEGMENT);
-                pmtu = SCTP_DEFAULT_MINSEGMENT;
-        }
+        if (sock_owned_by_user(sk) || !t || (t->pathmtu == pmtu))
+                return;
 
-        if (!sock_owned_by_user(sk) && t && (t->pmtu != pmtu)) {
-                t->pmtu = pmtu;
+        if (t->param_flags & SPP_PMTUD_ENABLE) {
+                if (unlikely(pmtu < SCTP_DEFAULT_MINSEGMENT)) {
+                        printk(KERN_WARNING "%s: Reported pmtu %d too low, "
+                               "using default minimum of %d\n",
+                               __FUNCTION__, pmtu,
+                               SCTP_DEFAULT_MINSEGMENT);
+                        /* Use default minimum segment size and disable
+                         * pmtu discovery on this transport.
+                         */
+                        t->pathmtu = SCTP_DEFAULT_MINSEGMENT;
+                        t->param_flags = (t->param_flags & ~SPP_HB) |
+                                SPP_PMTUD_DISABLE;
+                } else {
+                        t->pathmtu = pmtu;
+                }
+
+                /* Update association pmtu. */
                 sctp_assoc_sync_pmtu(asoc);
-                sctp_retransmit(&asoc->outqueue, t, SCTP_RTXR_PMTUD);
         }
+
+        /* Retransmit with the new pmtu setting.
+         * Normally, if PMTU discovery is disabled, an ICMP Fragmentation
+         * Needed will never be sent, but if a message was sent before
+         * PMTU discovery was disabled that was larger than the PMTU, it
+         * would not be fragmented, so it must be re-transmitted fragmented.     
+         */
+        sctp_retransmit(&asoc->outqueue, t, SCTP_RTXR_PMTUD);
 }
 
 /*
diff --git a/net/sctp/ipv6.c b/net/sctp/ipv6.c
index fa3be2b8fb5f..15c05165c905 100644
--- a/net/sctp/ipv6.c
+++ b/net/sctp/ipv6.c
@@ -866,7 +866,7 @@ static int sctp_inet6_supported_addrs(const struct sctp_sock *opt,
         return 2;
 }
 
-static struct proto_ops inet6_seqpacket_ops = {
+static const struct proto_ops inet6_seqpacket_ops = {
         .family     = PF_INET6,
         .owner      = THIS_MODULE,
         .release    = inet6_release,
diff --git a/net/sctp/output.c b/net/sctp/output.c
index 931371633464..a40991ef72c9 100644
--- a/net/sctp/output.c
+++ b/net/sctp/output.c
@@ -234,8 +234,8 @@ sctp_xmit_t sctp_packet_append_chunk(struct sctp_packet *packet,
                 goto finish;
 
         pmtu  = ((packet->transport->asoc) ?
-                 (packet->transport->asoc->pmtu) :
-                 (packet->transport->pmtu));
+                 (packet->transport->asoc->pathmtu) :
+                 (packet->transport->pathmtu));
 
         too_big = (psize + chunk_len > pmtu);
 
@@ -482,7 +482,9 @@ int sctp_packet_transmit(struct sctp_packet *packet)
         if (!dst || (dst->obsolete > 1)) {
                 dst_release(dst);
                 sctp_transport_route(tp, NULL, sctp_sk(sk));
-                sctp_assoc_sync_pmtu(asoc);
+                if (asoc->param_flags & SPP_PMTUD_ENABLE) {
+                        sctp_assoc_sync_pmtu(asoc);
+                }
         }
 
         nskb->dst = dst_clone(tp->dst);
@@ -492,7 +494,10 @@ int sctp_packet_transmit(struct sctp_packet *packet)
         SCTP_DEBUG_PRINTK("***sctp_transmit_packet*** skb len %d\n",
                           nskb->len);
 
-        (*tp->af_specific->sctp_xmit)(nskb, tp, packet->ipfragok);
+        if (tp->param_flags & SPP_PMTUD_ENABLE)
+                (*tp->af_specific->sctp_xmit)(nskb, tp, packet->ipfragok);
+        else
+                (*tp->af_specific->sctp_xmit)(nskb, tp, 1);
 
 out:
         packet->size = packet->overhead;
@@ -577,7 +582,7 @@ static sctp_xmit_t sctp_packet_append_data(struct sctp_packet *packet,
          *      if ((flightsize + Max.Burst * MTU) < cwnd)
          *              cwnd = flightsize + Max.Burst * MTU
          */
-        max_burst_bytes = asoc->max_burst * asoc->pmtu;
+        max_burst_bytes = asoc->max_burst * asoc->pathmtu;
         if ((transport->flight_size + max_burst_bytes) < transport->cwnd) {
                 transport->cwnd = transport->flight_size + max_burst_bytes;
                 SCTP_DEBUG_PRINTK("%s: cwnd limited by max_burst: "
@@ -622,7 +627,7 @@ static sctp_xmit_t sctp_packet_append_data(struct sctp_packet *packet,
                  * data will fit or delay in hopes of bundling a full
                  * sized packet.
                  */
-                if (len < asoc->pmtu - packet->overhead) {
+                if (len < asoc->pathmtu - packet->overhead) {
                         retval = SCTP_XMIT_NAGLE_DELAY;
                         goto finish;
                 }
diff --git a/net/sctp/protocol.c b/net/sctp/protocol.c
index f775d78aa59d..de693b43c8ea 100644
--- a/net/sctp/protocol.c
+++ b/net/sctp/protocol.c
@@ -54,6 +54,7 @@
 #include <net/protocol.h>
 #include <net/ip.h>
 #include <net/ipv6.h>
+#include <net/route.h>
 #include <net/sctp/sctp.h>
 #include <net/addrconf.h>
 #include <net/inet_common.h>
@@ -829,7 +830,7 @@ static struct notifier_block sctp_inetaddr_notifier = {
 };
 
 /* Socket operations.  */
-static struct proto_ops inet_seqpacket_ops = {
+static const struct proto_ops inet_seqpacket_ops = {
         .family      = PF_INET,
         .owner       = THIS_MODULE,
         .release     = inet_release,       /* Needs to be wrapped... */
diff --git a/net/sctp/sm_sideeffect.c b/net/sctp/sm_sideeffect.c
index 823947170a33..2d7d8a5db2ac 100644
--- a/net/sctp/sm_sideeffect.c
+++ b/net/sctp/sm_sideeffect.c
@@ -157,9 +157,12 @@ static int sctp_gen_sack(struct sctp_association *asoc, int force,
 {
         __u32 ctsn, max_tsn_seen;
         struct sctp_chunk *sack;
+        struct sctp_transport *trans = asoc->peer.last_data_from;
         int error = 0;
 
-        if (force)
+        if (force || 
+            (!trans && (asoc->param_flags & SPP_SACKDELAY_DISABLE)) ||
+            (trans && (trans->param_flags & SPP_SACKDELAY_DISABLE)))
                 asoc->peer.sack_needed = 1;
 
         ctsn = sctp_tsnmap_get_ctsn(&asoc->peer.tsn_map);
@@ -189,7 +192,22 @@ static int sctp_gen_sack(struct sctp_association *asoc, int force,
         if (!asoc->peer.sack_needed) {
                 /* We will need a SACK for the next packet.  */
                 asoc->peer.sack_needed = 1;
-                goto out;
+
+                /* Set the SACK delay timeout based on the
+                 * SACK delay for the last transport
+                 * data was received from, or the default
+                 * for the association.
+                 */
+                if (trans)
+                        asoc->timeouts[SCTP_EVENT_TIMEOUT_SACK] = 
+                                trans->sackdelay;
+                else
+                        asoc->timeouts[SCTP_EVENT_TIMEOUT_SACK] = 
+                                asoc->sackdelay;
+
+                /* Restart the SACK timer. */
+                sctp_add_cmd_sf(commands, SCTP_CMD_TIMER_RESTART,
+                                SCTP_TO(SCTP_EVENT_TIMEOUT_SACK));
         } else {
                 if (asoc->a_rwnd > asoc->rwnd)
                         asoc->a_rwnd = asoc->rwnd;
@@ -205,7 +223,7 @@ static int sctp_gen_sack(struct sctp_association *asoc, int force,
                 sctp_add_cmd_sf(commands, SCTP_CMD_TIMER_STOP,
                                 SCTP_TO(SCTP_EVENT_TIMEOUT_SACK));
         }
-out:
+
         return error;
 nomem:
         error = -ENOMEM;
@@ -415,7 +433,7 @@ static void sctp_do_8_2_transport_strike(struct sctp_association *asoc,
         asoc->overall_error_count++;
 
         if (transport->state != SCTP_INACTIVE &&
-            (transport->error_count++ >= transport->max_retrans)) {
+            (transport->error_count++ >= transport->pathmaxrxt)) {
                 SCTP_DEBUG_PRINTK_IPADDR("transport_strike:association %p",
                                          " transport IP: port:%d failed.\n",
                                          asoc,
diff --git a/net/sctp/sm_statefuns.c b/net/sctp/sm_statefuns.c
index 475bfb4972d9..557a7d90b92a 100644
--- a/net/sctp/sm_statefuns.c
+++ b/net/sctp/sm_statefuns.c
@@ -900,7 +900,7 @@ sctp_disposition_t sctp_sf_sendbeat_8_3(const struct sctp_endpoint *ep,
          * HEARTBEAT is sent (see Section 8.3).
          */
 
-        if (transport->hb_allowed) {
+        if (transport->param_flags & SPP_HB_ENABLE) {
                 if (SCTP_DISPOSITION_NOMEM ==
                                 sctp_sf_heartbeat(ep, asoc, type, arg,
                                                   commands))
@@ -1051,7 +1051,7 @@ sctp_disposition_t sctp_sf_backbeat_8_3(const struct sctp_endpoint *ep,
                 return SCTP_DISPOSITION_DISCARD;
         }
 
-        max_interval = link->hb_interval + link->rto;
+        max_interval = link->hbinterval + link->rto;
 
         /* Check if the timestamp looks valid.  */
         if (time_after(hbinfo->sent_at, jiffies) ||
@@ -2691,14 +2691,9 @@ sctp_disposition_t sctp_sf_eat_data_6_2(const struct sctp_endpoint *ep,
          * document allow. However, an SCTP transmitter MUST NOT be
          * more aggressive than the following algorithms allow.
          */
-        if (chunk->end_of_packet) {
+        if (chunk->end_of_packet)
                 sctp_add_cmd_sf(commands, SCTP_CMD_GEN_SACK, SCTP_NOFORCE());
 
-                /* Start the SACK timer.  */
-                sctp_add_cmd_sf(commands, SCTP_CMD_TIMER_RESTART,
-                                SCTP_TO(SCTP_EVENT_TIMEOUT_SACK));
-        }
-
         return SCTP_DISPOSITION_CONSUME;
 
 discard_force:
@@ -2721,13 +2716,9 @@ discard_force:
         return SCTP_DISPOSITION_DISCARD;
 
 discard_noforce:
-        if (chunk->end_of_packet) {
+        if (chunk->end_of_packet)
                 sctp_add_cmd_sf(commands, SCTP_CMD_GEN_SACK, SCTP_NOFORCE());
 
-                /* Start the SACK timer.  */
-                sctp_add_cmd_sf(commands, SCTP_CMD_TIMER_RESTART,
-                                SCTP_TO(SCTP_EVENT_TIMEOUT_SACK));
-        }
         return SCTP_DISPOSITION_DISCARD;
 consume:
         return SCTP_DISPOSITION_CONSUME;
@@ -3442,9 +3433,6 @@ sctp_disposition_t sctp_sf_eat_fwd_tsn(const struct sctp_endpoint *ep,
          * send another. 
          */
         sctp_add_cmd_sf(commands, SCTP_CMD_GEN_SACK, SCTP_NOFORCE());
-        /* Start the SACK timer.  */
-        sctp_add_cmd_sf(commands, SCTP_CMD_TIMER_RESTART,
-                        SCTP_TO(SCTP_EVENT_TIMEOUT_SACK));
 
         return SCTP_DISPOSITION_CONSUME;
 
diff --git a/net/sctp/socket.c b/net/sctp/socket.c
index 9df888e932c5..fc04d185fa33 100644
--- a/net/sctp/socket.c
+++ b/net/sctp/socket.c
@@ -1941,107 +1941,379 @@ static int sctp_setsockopt_autoclose(struct sock *sk, char __user *optval,
  * address's parameters:
  *
  *  struct sctp_paddrparams {
- *      sctp_assoc_t            spp_assoc_id;
- *      struct sockaddr_storage spp_address;
- *      uint32_t                spp_hbinterval;
- *      uint16_t                spp_pathmaxrxt;
- *  };
- *
- *   spp_assoc_id    - (UDP style socket) This is filled in the application,
- *                     and identifies the association for this query.
+ *     sctp_assoc_t            spp_assoc_id;
+ *     struct sockaddr_storage spp_address;
+ *     uint32_t                spp_hbinterval;
+ *     uint16_t                spp_pathmaxrxt;
+ *     uint32_t                spp_pathmtu;
+ *     uint32_t                spp_sackdelay;
+ *     uint32_t                spp_flags;
+ * };
+ *
+ *   spp_assoc_id    - (one-to-many style socket) This is filled in the
+ *                     application, and identifies the association for
+ *                     this query.
  *   spp_address     - This specifies which address is of interest.
  *   spp_hbinterval  - This contains the value of the heartbeat interval,
- *                     in milliseconds.  A value of 0, when modifying the
- *                     parameter, specifies that the heartbeat on this
- *                     address should be disabled. A value of UINT32_MAX
- *                     (4294967295), when modifying the parameter,
- *                     specifies that a heartbeat should be sent
- *                     immediately to the peer address, and the current
- *                     interval should remain unchanged.
+ *                     in milliseconds.  If a  value of zero
+ *                     is present in this field then no changes are to
+ *                     be made to this parameter.
  *   spp_pathmaxrxt  - This contains the maximum number of
  *                     retransmissions before this address shall be
- *                     considered unreachable.
+ *                     considered unreachable. If a  value of zero
+ *                     is present in this field then no changes are to
+ *                     be made to this parameter.
+ *   spp_pathmtu     - When Path MTU discovery is disabled the value
+ *                     specified here will be the "fixed" path mtu.
+ *                     Note that if the spp_address field is empty
+ *                     then all associations on this address will
+ *                     have this fixed path mtu set upon them.
+ *
+ *   spp_sackdelay   - When delayed sack is enabled, this value specifies
+ *                     the number of milliseconds that sacks will be delayed
+ *                     for. This value will apply to all addresses of an
+ *                     association if the spp_address field is empty. Note
+ *                     also, that if delayed sack is enabled and this
+ *                     value is set to 0, no change is made to the last
+ *                     recorded delayed sack timer value.
+ *
+ *   spp_flags       - These flags are used to control various features
+ *                     on an association. The flag field may contain
+ *                     zero or more of the following options.
+ *
+ *                     SPP_HB_ENABLE  - Enable heartbeats on the
+ *                     specified address. Note that if the address
+ *                     field is empty all addresses for the association
+ *                     have heartbeats enabled upon them.
+ *
+ *                     SPP_HB_DISABLE - Disable heartbeats on the
+ *                     speicifed address. Note that if the address
+ *                     field is empty all addresses for the association
+ *                     will have their heartbeats disabled. Note also
+ *                     that SPP_HB_ENABLE and SPP_HB_DISABLE are
+ *                     mutually exclusive, only one of these two should
+ *                     be specified. Enabling both fields will have
+ *                     undetermined results.
+ *
+ *                     SPP_HB_DEMAND - Request a user initiated heartbeat
+ *                     to be made immediately.
+ *
+ *                     SPP_PMTUD_ENABLE - This field will enable PMTU
+ *                     discovery upon the specified address. Note that
+ *                     if the address feild is empty then all addresses
+ *                     on the association are effected.
+ *
+ *                     SPP_PMTUD_DISABLE - This field will disable PMTU
+ *                     discovery upon the specified address. Note that
+ *                     if the address feild is empty then all addresses
+ *                     on the association are effected. Not also that
+ *                     SPP_PMTUD_ENABLE and SPP_PMTUD_DISABLE are mutually
+ *                     exclusive. Enabling both will have undetermined
+ *                     results.
+ *
+ *                     SPP_SACKDELAY_ENABLE - Setting this flag turns
+ *                     on delayed sack. The time specified in spp_sackdelay
+ *                     is used to specify the sack delay for this address. Note
+ *                     that if spp_address is empty then all addresses will
+ *                     enable delayed sack and take on the sack delay
+ *                     value specified in spp_sackdelay.
+ *                     SPP_SACKDELAY_DISABLE - Setting this flag turns
+ *                     off delayed sack. If the spp_address field is blank then
+ *                     delayed sack is disabled for the entire association. Note
+ *                     also that this field is mutually exclusive to
+ *                     SPP_SACKDELAY_ENABLE, setting both will have undefined
+ *                     results.
  */
+int sctp_apply_peer_addr_params(struct sctp_paddrparams *params,
+                                struct sctp_transport   *trans,
+                                struct sctp_association *asoc,
+                                struct sctp_sock        *sp,
+                                int                      hb_change,
+                                int                      pmtud_change,
+                                int                      sackdelay_change)
+{
+        int error;
+
+        if (params->spp_flags & SPP_HB_DEMAND && trans) {
+                error = sctp_primitive_REQUESTHEARTBEAT (trans->asoc, trans);
+                if (error)
+                        return error;
+        }
+
+        if (params->spp_hbinterval) {
+                if (trans) {
+                        trans->hbinterval = msecs_to_jiffies(params->spp_hbinterval);
+                } else if (asoc) {
+                        asoc->hbinterval = msecs_to_jiffies(params->spp_hbinterval);
+                } else {
+                        sp->hbinterval = params->spp_hbinterval;
+                }
+        }
+
+        if (hb_change) {
+                if (trans) {
+                        trans->param_flags =
+                                (trans->param_flags & ~SPP_HB) | hb_change;
+                } else if (asoc) {
+                        asoc->param_flags =
+                                (asoc->param_flags & ~SPP_HB) | hb_change;
+                } else {
+                        sp->param_flags =
+                                (sp->param_flags & ~SPP_HB) | hb_change;
+                }
+        }
+
+        if (params->spp_pathmtu) {
+                if (trans) {
+                        trans->pathmtu = params->spp_pathmtu;
+                        sctp_assoc_sync_pmtu(asoc);
+                } else if (asoc) {
+                        asoc->pathmtu = params->spp_pathmtu;
+                        sctp_frag_point(sp, params->spp_pathmtu);
+                } else {
+                        sp->pathmtu = params->spp_pathmtu;
+                }
+        }
+
+        if (pmtud_change) {
+                if (trans) {
+                        int update = (trans->param_flags & SPP_PMTUD_DISABLE) &&
+                                (params->spp_flags & SPP_PMTUD_ENABLE);
+                        trans->param_flags =
+                                (trans->param_flags & ~SPP_PMTUD) | pmtud_change;
+                        if (update) {
+                                sctp_transport_pmtu(trans);
+                                sctp_assoc_sync_pmtu(asoc);
+                        }
+                } else if (asoc) {
+                        asoc->param_flags =
+                                (asoc->param_flags & ~SPP_PMTUD) | pmtud_change;
+                } else {
+                        sp->param_flags =
+                                (sp->param_flags & ~SPP_PMTUD) | pmtud_change;
+                }
+        }
+
+        if (params->spp_sackdelay) {
+                if (trans) {
+                        trans->sackdelay =
+                                msecs_to_jiffies(params->spp_sackdelay);
+                } else if (asoc) {
+                        asoc->sackdelay =
+                                msecs_to_jiffies(params->spp_sackdelay);
+                } else {
+                        sp->sackdelay = params->spp_sackdelay;
+                }
+        }
+
+        if (sackdelay_change) {
+                if (trans) {
+                        trans->param_flags =
+                                (trans->param_flags & ~SPP_SACKDELAY) |
+                                sackdelay_change;
+                } else if (asoc) {
+                        asoc->param_flags =
+                                (asoc->param_flags & ~SPP_SACKDELAY) |
+                                sackdelay_change;
+                } else {
+                        sp->param_flags =
+                                (sp->param_flags & ~SPP_SACKDELAY) |
+                                sackdelay_change;
+                }
+        }
+
+        if (params->spp_pathmaxrxt) {
+                if (trans) {
+                        trans->pathmaxrxt = params->spp_pathmaxrxt;
+                } else if (asoc) {
+                        asoc->pathmaxrxt = params->spp_pathmaxrxt;
+                } else {
+                        sp->pathmaxrxt = params->spp_pathmaxrxt;
+                }
+        }
+
+        return 0;
+}
+
 static int sctp_setsockopt_peer_addr_params(struct sock *sk,
                                             char __user *optval, int optlen)
 {
-        struct sctp_paddrparams params;
-        struct sctp_transport *trans;
+        struct sctp_paddrparams  params;
+        struct sctp_transport   *trans = NULL;
+        struct sctp_association *asoc = NULL;
+        struct sctp_sock        *sp = sctp_sk(sk);
         int error;
+        int hb_change, pmtud_change, sackdelay_change;
 
         if (optlen != sizeof(struct sctp_paddrparams))
-                return -EINVAL;
+                return - EINVAL;
+
         if (copy_from_user(&params, optval, optlen))
                 return -EFAULT;
 
-        /*
-         * API 7. Socket Options (setting the default value for the endpoint)
-         * All options that support specific settings on an association by
-         * filling in either an association id variable or a sockaddr_storage
-         * SHOULD also support setting of the same value for the entire endpoint
-         * (i.e. future associations). To accomplish this the following logic is
-         * used when setting one of these options:
-
-         * c) If neither the sockaddr_storage or association identification is
-         *    set i.e. the sockaddr_storage is set to all 0's (INADDR_ANY) and
-         *    the association identification is 0, the settings are a default
-         *    and to be applied to the endpoint (all future associations).
-         */
+        /* Validate flags and value parameters. */
+        hb_change        = params.spp_flags & SPP_HB;
+        pmtud_change     = params.spp_flags & SPP_PMTUD;
+        sackdelay_change = params.spp_flags & SPP_SACKDELAY;
+
+        if (hb_change        == SPP_HB ||
+            pmtud_change     == SPP_PMTUD ||
+            sackdelay_change == SPP_SACKDELAY ||
+            params.spp_sackdelay > 500 ||
+            (params.spp_pathmtu
+            && params.spp_pathmtu < SCTP_DEFAULT_MINSEGMENT))
+                return -EINVAL;
 
-        /* update default value for endpoint (all future associations) */
-        if (!params.spp_assoc_id && 
-            sctp_is_any(( union sctp_addr *)&params.spp_address)) {
-                /* Manual heartbeat on an endpoint is invalid. */
-                if (0xffffffff == params.spp_hbinterval)
+        /* If an address other than INADDR_ANY is specified, and
+         * no transport is found, then the request is invalid.
+         */
+        if (!sctp_is_any(( union sctp_addr *)&params.spp_address)) {
+                trans = sctp_addr_id2transport(sk, &params.spp_address,
+                                               params.spp_assoc_id);
+                if (!trans)
                         return -EINVAL;
-                else if (params.spp_hbinterval)
-                        sctp_sk(sk)->paddrparam.spp_hbinterval =
-                                                params.spp_hbinterval;
-                if (params.spp_pathmaxrxt)
-                        sctp_sk(sk)->paddrparam.spp_pathmaxrxt =
-                                                params.spp_pathmaxrxt;
-                return 0;
         }
 
-        trans = sctp_addr_id2transport(sk, &params.spp_address,
-                                       params.spp_assoc_id);
-        if (!trans)
+        /* Get association, if assoc_id != 0 and the socket is a one
+         * to many style socket, and an association was not found, then
+         * the id was invalid.
+         */
+        asoc = sctp_id2assoc(sk, params.spp_assoc_id);
+        if (!asoc && params.spp_assoc_id && sctp_style(sk, UDP))
                 return -EINVAL;
 
-        /* Applications can enable or disable heartbeats for any peer address
-         * of an association, modify an address's heartbeat interval, force a
-         * heartbeat to be sent immediately, and adjust the address's maximum
-         * number of retransmissions sent before an address is considered
-         * unreachable.
-         *
-         * The value of the heartbeat interval, in milliseconds. A value of
-         * UINT32_MAX (4294967295), when modifying the parameter, specifies
-         * that a heartbeat should be sent immediately to the peer address,
-         * and the current interval should remain unchanged.
+        /* Heartbeat demand can only be sent on a transport or
+         * association, but not a socket.
          */
-        if (0xffffffff == params.spp_hbinterval) {
-                error = sctp_primitive_REQUESTHEARTBEAT (trans->asoc, trans);
-                if (error)
-                        return error;
-        } else {
-        /* The value of the heartbeat interval, in milliseconds. A value of 0,
-         * when modifying the parameter, specifies that the heartbeat on this
-         * address should be disabled.
+        if (params.spp_flags & SPP_HB_DEMAND && !trans && !asoc)
+                return -EINVAL;
+
+        /* Process parameters. */
+        error = sctp_apply_peer_addr_params(&params, trans, asoc, sp,
+                                            hb_change, pmtud_change,
+                                            sackdelay_change);
+
+        if (error)
+                return error;
+
+        /* If changes are for association, also apply parameters to each
+         * transport.
          */
-                if (params.spp_hbinterval) {
-                        trans->hb_allowed = 1;
-                        trans->hb_interval = 
-                                msecs_to_jiffies(params.spp_hbinterval);
-                } else
-                        trans->hb_allowed = 0;
+        if (!trans && asoc) {
+                struct list_head *pos;
+
+                list_for_each(pos, &asoc->peer.transport_addr_list) {
+                        trans = list_entry(pos, struct sctp_transport,
+                                           transports);
+                        sctp_apply_peer_addr_params(&params, trans, asoc, sp,
+                                                    hb_change, pmtud_change,
+                                                    sackdelay_change);
+                }
         }
 
-        /* spp_pathmaxrxt contains the maximum number of retransmissions
-         * before this address shall be considered unreachable.
-         */
-        if (params.spp_pathmaxrxt)
-                trans->max_retrans = params.spp_pathmaxrxt;
+        return 0;
+}
+
+/* 7.1.24. Delayed Ack Timer (SCTP_DELAYED_ACK_TIME)
+ *
+ *   This options will get or set the delayed ack timer.  The time is set
+ *   in milliseconds.  If the assoc_id is 0, then this sets or gets the
+ *   endpoints default delayed ack timer value.  If the assoc_id field is
+ *   non-zero, then the set or get effects the specified association.
+ *
+ *   struct sctp_assoc_value {
+ *       sctp_assoc_t            assoc_id;
+ *       uint32_t                assoc_value;
+ *   };
+ *
+ *     assoc_id    - This parameter, indicates which association the
+ *                   user is preforming an action upon. Note that if
+ *                   this field's value is zero then the endpoints
+ *                   default value is changed (effecting future
+ *                   associations only).
+ *
+ *     assoc_value - This parameter contains the number of milliseconds
+ *                   that the user is requesting the delayed ACK timer
+ *                   be set to. Note that this value is defined in
+ *                   the standard to be between 200 and 500 milliseconds.
+ *
+ *                   Note: a value of zero will leave the value alone,
+ *                   but disable SACK delay. A non-zero value will also
+ *                   enable SACK delay.
+ */
 
+static int sctp_setsockopt_delayed_ack_time(struct sock *sk,
+                                            char __user *optval, int optlen)
+{
+        struct sctp_assoc_value  params;
+        struct sctp_transport   *trans = NULL;
+        struct sctp_association *asoc = NULL;
+        struct sctp_sock        *sp = sctp_sk(sk);
+
+        if (optlen != sizeof(struct sctp_assoc_value))
+                return - EINVAL;
+
+        if (copy_from_user(&params, optval, optlen))
+                return -EFAULT;
+
+        /* Validate value parameter. */
+        if (params.assoc_value > 500)
+                return -EINVAL;
+
+        /* Get association, if assoc_id != 0 and the socket is a one
+         * to many style socket, and an association was not found, then
+         * the id was invalid.
+         */
+        asoc = sctp_id2assoc(sk, params.assoc_id);
+        if (!asoc && params.assoc_id && sctp_style(sk, UDP))
+                return -EINVAL;
+
+        if (params.assoc_value) {
+                if (asoc) {
+                        asoc->sackdelay =
+                                msecs_to_jiffies(params.assoc_value);
+                        asoc->param_flags = 
+                                (asoc->param_flags & ~SPP_SACKDELAY) |
+                                SPP_SACKDELAY_ENABLE;
+                } else {
+                        sp->sackdelay = params.assoc_value;
+                        sp->param_flags = 
+                                (sp->param_flags & ~SPP_SACKDELAY) |
+                                SPP_SACKDELAY_ENABLE;
+                }
+        } else {
+                if (asoc) {
+                        asoc->param_flags = 
+                                (asoc->param_flags & ~SPP_SACKDELAY) |
+                                SPP_SACKDELAY_DISABLE;
+                } else {
+                        sp->param_flags = 
+                                (sp->param_flags & ~SPP_SACKDELAY) |
+                                SPP_SACKDELAY_DISABLE;
+                }
+        }
+
+        /* If change is for association, also apply to each transport. */
+        if (asoc) {
+                struct list_head *pos;
+
+                list_for_each(pos, &asoc->peer.transport_addr_list) {
+                        trans = list_entry(pos, struct sctp_transport,
+                                           transports);
+                        if (params.assoc_value) {
+                                trans->sackdelay =
+                                        msecs_to_jiffies(params.assoc_value);
+                                trans->param_flags = 
+                                        (trans->param_flags & ~SPP_SACKDELAY) |
+                                        SPP_SACKDELAY_ENABLE;
+                        } else {
+                                trans->param_flags = 
+                                        (trans->param_flags & ~SPP_SACKDELAY) |
+                                        SPP_SACKDELAY_DISABLE;
+                        }
+                }
+        }
+ 
         return 0;
 }
 
@@ -2334,7 +2606,7 @@ static int sctp_setsockopt_maxseg(struct sock *sk, char __user *optval, int optl
         /* Update the frag_point of the existing associations. */
         list_for_each(pos, &(sp->ep->asocs)) {
                 asoc = list_entry(pos, struct sctp_association, asocs);
-                asoc->frag_point = sctp_frag_point(sp, asoc->pmtu); 
+                asoc->frag_point = sctp_frag_point(sp, asoc->pathmtu); 
         }
 
         return 0;
@@ -2491,6 +2763,10 @@ SCTP_STATIC int sctp_setsockopt(struct sock *sk, int level, int optname,
                 retval = sctp_setsockopt_peer_addr_params(sk, optval, optlen);
                 break;
 
+        case SCTP_DELAYED_ACK_TIME:
+                retval = sctp_setsockopt_delayed_ack_time(sk, optval, optlen);
+                break;
+
         case SCTP_INITMSG:
                 retval = sctp_setsockopt_initmsg(sk, optval, optlen);
                 break;
@@ -2715,8 +2991,13 @@ SCTP_STATIC int sctp_init_sock(struct sock *sk)
         /* Default Peer Address Parameters.  These defaults can
          * be modified via SCTP_PEER_ADDR_PARAMS
          */
-        sp->paddrparam.spp_hbinterval = jiffies_to_msecs(sctp_hb_interval);
-        sp->paddrparam.spp_pathmaxrxt = sctp_max_retrans_path;
+        sp->hbinterval  = jiffies_to_msecs(sctp_hb_interval);
+        sp->pathmaxrxt  = sctp_max_retrans_path;
+        sp->pathmtu     = 0; // allow default discovery
+        sp->sackdelay   = sctp_sack_timeout;
+        sp->param_flags = SPP_HB_ENABLE |
+                          SPP_PMTUD_ENABLE |
+                          SPP_SACKDELAY_ENABLE;
 
         /* If enabled no SCTP message fragmentation will be performed.
          * Configure through SCTP_DISABLE_FRAGMENTS socket option.
@@ -2865,7 +3146,7 @@ static int sctp_getsockopt_sctp_status(struct sock *sk, int len,
         status.sstat_primary.spinfo_cwnd = transport->cwnd;
         status.sstat_primary.spinfo_srtt = transport->srtt;
         status.sstat_primary.spinfo_rto = jiffies_to_msecs(transport->rto);
-        status.sstat_primary.spinfo_mtu = transport->pmtu;
+        status.sstat_primary.spinfo_mtu = transport->pathmtu;
 
         if (status.sstat_primary.spinfo_state == SCTP_UNKNOWN)
                 status.sstat_primary.spinfo_state = SCTP_ACTIVE;
@@ -2924,7 +3205,7 @@ static int sctp_getsockopt_peer_addr_info(struct sock *sk, int len,
         pinfo.spinfo_cwnd = transport->cwnd;
         pinfo.spinfo_srtt = transport->srtt;
         pinfo.spinfo_rto = jiffies_to_msecs(transport->rto);
-        pinfo.spinfo_mtu = transport->pmtu;
+        pinfo.spinfo_mtu = transport->pathmtu;
 
         if (pinfo.spinfo_state == SCTP_UNKNOWN)
                 pinfo.spinfo_state = SCTP_ACTIVE;
@@ -3086,69 +3367,227 @@ out:
  * address's parameters:
  *
  *  struct sctp_paddrparams {
- *      sctp_assoc_t            spp_assoc_id;
- *      struct sockaddr_storage spp_address;
- *      uint32_t                spp_hbinterval;
- *      uint16_t                spp_pathmaxrxt;
- *  };
- *
- *   spp_assoc_id    - (UDP style socket) This is filled in the application,
- *                     and identifies the association for this query.
+ *     sctp_assoc_t            spp_assoc_id;
+ *     struct sockaddr_storage spp_address;
+ *     uint32_t                spp_hbinterval;
+ *     uint16_t                spp_pathmaxrxt;
+ *     uint32_t                spp_pathmtu;
+ *     uint32_t                spp_sackdelay;
+ *     uint32_t                spp_flags;
+ * };
+ *
+ *   spp_assoc_id    - (one-to-many style socket) This is filled in the
+ *                     application, and identifies the association for
+ *                     this query.
  *   spp_address     - This specifies which address is of interest.
  *   spp_hbinterval  - This contains the value of the heartbeat interval,
- *                     in milliseconds.  A value of 0, when modifying the
- *                     parameter, specifies that the heartbeat on this
- *                     address should be disabled. A value of UINT32_MAX
- *                     (4294967295), when modifying the parameter,
- *                     specifies that a heartbeat should be sent
- *                     immediately to the peer address, and the current
- *                     interval should remain unchanged.
+ *                     in milliseconds.  If a  value of zero
+ *                     is present in this field then no changes are to
+ *                     be made to this parameter.
  *   spp_pathmaxrxt  - This contains the maximum number of
  *                     retransmissions before this address shall be
- *                     considered unreachable.
+ *                     considered unreachable. If a  value of zero
+ *                     is present in this field then no changes are to
+ *                     be made to this parameter.
+ *   spp_pathmtu     - When Path MTU discovery is disabled the value
+ *                     specified here will be the "fixed" path mtu.
+ *                     Note that if the spp_address field is empty
+ *                     then all associations on this address will
+ *                     have this fixed path mtu set upon them.
+ *
+ *   spp_sackdelay   - When delayed sack is enabled, this value specifies
+ *                     the number of milliseconds that sacks will be delayed
+ *                     for. This value will apply to all addresses of an
+ *                     association if the spp_address field is empty. Note
+ *                     also, that if delayed sack is enabled and this
+ *                     value is set to 0, no change is made to the last
+ *                     recorded delayed sack timer value.
+ *
+ *   spp_flags       - These flags are used to control various features
+ *                     on an association. The flag field may contain
+ *                     zero or more of the following options.
+ *
+ *                     SPP_HB_ENABLE  - Enable heartbeats on the
+ *                     specified address. Note that if the address
+ *                     field is empty all addresses for the association
+ *                     have heartbeats enabled upon them.
+ *
+ *                     SPP_HB_DISABLE - Disable heartbeats on the
+ *                     speicifed address. Note that if the address
+ *                     field is empty all addresses for the association
+ *                     will have their heartbeats disabled. Note also
+ *                     that SPP_HB_ENABLE and SPP_HB_DISABLE are
+ *                     mutually exclusive, only one of these two should
+ *                     be specified. Enabling both fields will have
+ *                     undetermined results.
+ *
+ *                     SPP_HB_DEMAND - Request a user initiated heartbeat
+ *                     to be made immediately.
+ *
+ *                     SPP_PMTUD_ENABLE - This field will enable PMTU
+ *                     discovery upon the specified address. Note that
+ *                     if the address feild is empty then all addresses
+ *                     on the association are effected.
+ *
+ *                     SPP_PMTUD_DISABLE - This field will disable PMTU
+ *                     discovery upon the specified address. Note that
+ *                     if the address feild is empty then all addresses
+ *                     on the association are effected. Not also that
+ *                     SPP_PMTUD_ENABLE and SPP_PMTUD_DISABLE are mutually
+ *                     exclusive. Enabling both will have undetermined
+ *                     results.
+ *
+ *                     SPP_SACKDELAY_ENABLE - Setting this flag turns
+ *                     on delayed sack. The time specified in spp_sackdelay
+ *                     is used to specify the sack delay for this address. Note
+ *                     that if spp_address is empty then all addresses will
+ *                     enable delayed sack and take on the sack delay
+ *                     value specified in spp_sackdelay.
+ *                     SPP_SACKDELAY_DISABLE - Setting this flag turns
+ *                     off delayed sack. If the spp_address field is blank then
+ *                     delayed sack is disabled for the entire association. Note
+ *                     also that this field is mutually exclusive to
+ *                     SPP_SACKDELAY_ENABLE, setting both will have undefined
+ *                     results.
  */
 static int sctp_getsockopt_peer_addr_params(struct sock *sk, int len,
-                                                char __user *optval, int __user *optlen)
+                                            char __user *optval, int __user *optlen)
 {
-        struct sctp_paddrparams params;
-        struct sctp_transport *trans;
+        struct sctp_paddrparams  params;
+        struct sctp_transport   *trans = NULL;
+        struct sctp_association *asoc = NULL;
+        struct sctp_sock        *sp = sctp_sk(sk);
 
         if (len != sizeof(struct sctp_paddrparams))
                 return -EINVAL;
+
         if (copy_from_user(&params, optval, len))
                 return -EFAULT;
 
-        /* If no association id is specified retrieve the default value
-         * for the endpoint that will be used for all future associations
+        /* If an address other than INADDR_ANY is specified, and
+         * no transport is found, then the request is invalid.
          */
-        if (!params.spp_assoc_id &&
-            sctp_is_any(( union sctp_addr *)&params.spp_address)) {
-                params.spp_hbinterval = sctp_sk(sk)->paddrparam.spp_hbinterval;
-                params.spp_pathmaxrxt = sctp_sk(sk)->paddrparam.spp_pathmaxrxt;
-
-                goto done;
+        if (!sctp_is_any(( union sctp_addr *)&params.spp_address)) {
+                trans = sctp_addr_id2transport(sk, &params.spp_address,
+                                               params.spp_assoc_id);
+                if (!trans) {
+                        SCTP_DEBUG_PRINTK("Failed no transport\n");
+                        return -EINVAL;
+                }
         }
 
-        trans = sctp_addr_id2transport(sk, &params.spp_address,
-                                       params.spp_assoc_id);
-        if (!trans)
+        /* Get association, if assoc_id != 0 and the socket is a one
+         * to many style socket, and an association was not found, then
+         * the id was invalid.
+         */
+        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");
                 return -EINVAL;
+        }
 
-        /* The value of the heartbeat interval, in milliseconds. A value of 0,
-         * when modifying the parameter, specifies that the heartbeat on this
-         * address should be disabled.
-         */
-        if (!trans->hb_allowed)
-                params.spp_hbinterval = 0;
-        else
-                params.spp_hbinterval = jiffies_to_msecs(trans->hb_interval);
+        if (trans) {
+                /* Fetch transport values. */
+                params.spp_hbinterval = jiffies_to_msecs(trans->hbinterval);
+                params.spp_pathmtu    = trans->pathmtu;
+                params.spp_pathmaxrxt = trans->pathmaxrxt;
+                params.spp_sackdelay  = jiffies_to_msecs(trans->sackdelay);
+
+                /*draft-11 doesn't say what to return in spp_flags*/
+                params.spp_flags      = trans->param_flags;
+        } else if (asoc) {
+                /* Fetch association values. */
+                params.spp_hbinterval = jiffies_to_msecs(asoc->hbinterval);
+                params.spp_pathmtu    = asoc->pathmtu;
+                params.spp_pathmaxrxt = asoc->pathmaxrxt;
+                params.spp_sackdelay  = jiffies_to_msecs(asoc->sackdelay);
+
+                /*draft-11 doesn't say what to return in spp_flags*/
+                params.spp_flags      = asoc->param_flags;
+        } else {
+                /* Fetch socket values. */
+                params.spp_hbinterval = sp->hbinterval;
+                params.spp_pathmtu    = sp->pathmtu;
+                params.spp_sackdelay  = sp->sackdelay;
+                params.spp_pathmaxrxt = sp->pathmaxrxt;
+
+                /*draft-11 doesn't say what to return in spp_flags*/
+                params.spp_flags      = sp->param_flags;
+        }
 
-        /* spp_pathmaxrxt contains the maximum number of retransmissions
-         * before this address shall be considered unreachable.
-         */
-        params.spp_pathmaxrxt = trans->max_retrans;
+        if (copy_to_user(optval, &params, len))
+                return -EFAULT;
+
+        if (put_user(len, optlen))
+                return -EFAULT;
+
+        return 0;
+}
+
+/* 7.1.24. Delayed Ack Timer (SCTP_DELAYED_ACK_TIME)
+ *
+ *   This options will get or set the delayed ack timer.  The time is set
+ *   in milliseconds.  If the assoc_id is 0, then this sets or gets the
+ *   endpoints default delayed ack timer value.  If the assoc_id field is
+ *   non-zero, then the set or get effects the specified association.
+ *
+ *   struct sctp_assoc_value {
+ *       sctp_assoc_t            assoc_id;
+ *       uint32_t                assoc_value;
+ *   };
+ *
+ *     assoc_id    - This parameter, indicates which association the
+ *                   user is preforming an action upon. Note that if
+ *                   this field's value is zero then the endpoints
+ *                   default value is changed (effecting future
+ *                   associations only).
+ *
+ *     assoc_value - This parameter contains the number of milliseconds
+ *                   that the user is requesting the delayed ACK timer
+ *                   be set to. Note that this value is defined in
+ *                   the standard to be between 200 and 500 milliseconds.
+ *
+ *                   Note: a value of zero will leave the value alone,
+ *                   but disable SACK delay. A non-zero value will also
+ *                   enable SACK delay.
+ */
+static int sctp_getsockopt_delayed_ack_time(struct sock *sk, int len,
+                                            char __user *optval,
+                                            int __user *optlen)
+{
+        struct sctp_assoc_value  params;
+        struct sctp_association *asoc = NULL;
+        struct sctp_sock        *sp = sctp_sk(sk);
+
+        if (len != sizeof(struct sctp_assoc_value))
+                return - EINVAL;
+
+        if (copy_from_user(&params, optval, len))
+                return -EFAULT;
+
+        /* Get association, if assoc_id != 0 and the socket is a one
+         * to many style socket, and an association was not found, then
+         * the id was invalid.
+         */
+        asoc = sctp_id2assoc(sk, params.assoc_id);
+        if (!asoc && params.assoc_id && sctp_style(sk, UDP))
+                return -EINVAL;
+
+        if (asoc) {
+                /* Fetch association values. */
+                if (asoc->param_flags & SPP_SACKDELAY_ENABLE)
+                        params.assoc_value = jiffies_to_msecs(
+                                asoc->sackdelay);
+                else
+                        params.assoc_value = 0;
+        } else {
+                /* Fetch socket values. */
+                if (sp->param_flags & SPP_SACKDELAY_ENABLE)
+                        params.assoc_value  = sp->sackdelay;
+                else
+                        params.assoc_value  = 0;
+        }
 
-done:
         if (copy_to_user(optval, &params, len))
                 return -EFAULT;
 
@@ -4015,6 +4454,10 @@ SCTP_STATIC int sctp_getsockopt(struct sock *sk, int level, int optname,
                 retval = sctp_getsockopt_peer_addr_params(sk, len, optval,
                                                           optlen);
                 break;
+        case SCTP_DELAYED_ACK_TIME:
+                retval = sctp_getsockopt_delayed_ack_time(sk, len, optval,
+                                                          optlen);
+                break;
         case SCTP_INITMSG:
                 retval = sctp_getsockopt_initmsg(sk, len, optval, optlen);
                 break;
diff --git a/net/sctp/transport.c b/net/sctp/transport.c
index 268ddaf2dc0f..68d73e2dd155 100644
--- a/net/sctp/transport.c
+++ b/net/sctp/transport.c
@@ -86,10 +86,13 @@ static struct sctp_transport *sctp_transport_init(struct sctp_transport *peer,
         peer->init_sent_count = 0;
 
         peer->state = SCTP_ACTIVE;
-        peer->hb_allowed = 0;
+        peer->param_flags = SPP_HB_DISABLE |
+                            SPP_PMTUD_ENABLE |
+                            SPP_SACKDELAY_ENABLE;
+        peer->hbinterval  = 0;
 
         /* Initialize the default path max_retrans.  */
-        peer->max_retrans = sctp_max_retrans_path;
+        peer->pathmaxrxt  = sctp_max_retrans_path;
         peer->error_count = 0;
 
         INIT_LIST_HEAD(&peer->transmitted);
@@ -229,10 +232,10 @@ void sctp_transport_pmtu(struct sctp_transport *transport)
         dst = transport->af_specific->get_dst(NULL, &transport->ipaddr, NULL);
 
         if (dst) {
-                transport->pmtu = dst_mtu(dst);
+                transport->pathmtu = dst_mtu(dst);
                 dst_release(dst);
         } else
-                transport->pmtu = SCTP_DEFAULT_MAXSEGMENT;
+                transport->pathmtu = SCTP_DEFAULT_MAXSEGMENT;
 }
 
 /* Caches the dst entry and source address for a transport's destination
@@ -254,8 +257,11 @@ void sctp_transport_route(struct sctp_transport *transport,
                 af->get_saddr(asoc, dst, daddr, &transport->saddr);
 
         transport->dst = dst;
+        if ((transport->param_flags & SPP_PMTUD_DISABLE) && transport->pathmtu) {
+                return;
+        }
         if (dst) {
-                transport->pmtu = dst_mtu(dst);
+                transport->pathmtu = dst_mtu(dst);
 
                 /* Initialize sk->sk_rcv_saddr, if the transport is the
                  * association's active path for getsockname().
@@ -264,7 +270,7 @@ void sctp_transport_route(struct sctp_transport *transport,
                         opt->pf->af->to_sk_saddr(&transport->saddr,
                                                  asoc->base.sk);
         } else
-                transport->pmtu = SCTP_DEFAULT_MAXSEGMENT;
+                transport->pathmtu = SCTP_DEFAULT_MAXSEGMENT;
 }
 
 /* Hold a reference to a transport.  */
@@ -369,7 +375,7 @@ void sctp_transport_raise_cwnd(struct sctp_transport *transport,
 
         ssthresh = transport->ssthresh;
         pba = transport->partial_bytes_acked;
-        pmtu = transport->asoc->pmtu;
+        pmtu = transport->asoc->pathmtu;
 
         if (cwnd <= ssthresh) {
                 /* RFC 2960 7.2.1, sctpimpguide-05 2.14.2 When cwnd is less
@@ -441,8 +447,8 @@ void sctp_transport_lower_cwnd(struct sctp_transport *transport,
                  *      partial_bytes_acked = 0
                  */
                 transport->ssthresh = max(transport->cwnd/2,
-                                          4*transport->asoc->pmtu);
-                transport->cwnd = transport->asoc->pmtu;
+                                          4*transport->asoc->pathmtu);
+                transport->cwnd = transport->asoc->pathmtu;
                 break;
 
         case SCTP_LOWER_CWND_FAST_RTX:
@@ -459,7 +465,7 @@ void sctp_transport_lower_cwnd(struct sctp_transport *transport,
                  *      partial_bytes_acked = 0
                  */
                 transport->ssthresh = max(transport->cwnd/2,
-                                          4*transport->asoc->pmtu);
+                                          4*transport->asoc->pathmtu);
                 transport->cwnd = transport->ssthresh;
                 break;
 
@@ -479,7 +485,7 @@ void sctp_transport_lower_cwnd(struct sctp_transport *transport,
                 if ((jiffies - transport->last_time_ecne_reduced) >
                     transport->rtt) {
                         transport->ssthresh = max(transport->cwnd/2,
-                                                  4*transport->asoc->pmtu);
+                                                  4*transport->asoc->pathmtu);
                         transport->cwnd = transport->ssthresh;
                         transport->last_time_ecne_reduced = jiffies;
                 }
@@ -496,7 +502,7 @@ void sctp_transport_lower_cwnd(struct sctp_transport *transport,
                  */
                 if ((jiffies - transport->last_time_used) > transport->rto)
                         transport->cwnd = max(transport->cwnd/2,
-                                                 4*transport->asoc->pmtu);
+                                                 4*transport->asoc->pathmtu);
                 break;
         };
 
@@ -511,7 +517,7 @@ void sctp_transport_lower_cwnd(struct sctp_transport *transport,
 unsigned long sctp_transport_timeout(struct sctp_transport *t)
 {
         unsigned long timeout;
-        timeout = t->hb_interval + t->rto + sctp_jitter(t->rto);
+        timeout = t->hbinterval + t->rto + sctp_jitter(t->rto);
         timeout += jiffies;
         return timeout;
 }
diff --git a/net/socket.c b/net/socket.c
index 3145103cdf54..06fa217f58a9 100644
--- a/net/socket.c
+++ b/net/socket.c
@@ -640,154 +640,150 @@ static void sock_aio_dtor(struct kiocb *iocb)
         kfree(iocb->private);
 }
 
-/*
- *      Read data from a socket. ubuf is a user mode pointer. We make sure the user
- *      area ubuf...ubuf+size-1 is writable before asking the protocol.
- */
-
-static ssize_t sock_aio_read(struct kiocb *iocb, char __user *ubuf,
-                         size_t size, loff_t pos)
+static ssize_t sock_sendpage(struct file *file, struct page *page,
+                             int offset, size_t size, loff_t *ppos, int more)
 {
-        struct sock_iocb *x, siocb;
         struct socket *sock;
         int flags;
 
-        if (pos != 0)
-                return -ESPIPE;
-        if (size==0)            /* Match SYS5 behaviour */
-                return 0;
+        sock = file->private_data;
 
-        if (is_sync_kiocb(iocb))
-                x = &siocb;
-        else {
-                x = kmalloc(sizeof(struct sock_iocb), GFP_KERNEL);
-                if (!x)
-                        return -ENOMEM;
+        flags = !(file->f_flags & O_NONBLOCK) ? 0 : MSG_DONTWAIT;
+        if (more)
+                flags |= MSG_MORE;
+
+        return sock->ops->sendpage(sock, page, offset, size, flags);
+}
+
+static struct sock_iocb *alloc_sock_iocb(struct kiocb *iocb,
+                char __user *ubuf, size_t size, struct sock_iocb *siocb)
+{
+        if (!is_sync_kiocb(iocb)) {
+                siocb = kmalloc(sizeof(*siocb), GFP_KERNEL);
+                if (!siocb)
+                        return NULL;
                 iocb->ki_dtor = sock_aio_dtor;
         }
-        iocb->private = x;
-        x->kiocb = iocb;
-        sock = iocb->ki_filp->private_data; 
 
-        x->async_msg.msg_name = NULL;
-        x->async_msg.msg_namelen = 0;
-        x->async_msg.msg_iov = &x->async_iov;
-        x->async_msg.msg_iovlen = 1;
-        x->async_msg.msg_control = NULL;
-        x->async_msg.msg_controllen = 0;
-        x->async_iov.iov_base = ubuf;
-        x->async_iov.iov_len = size;
-        flags = !(iocb->ki_filp->f_flags & O_NONBLOCK) ? 0 : MSG_DONTWAIT;
+        siocb->kiocb = iocb;
+        siocb->async_iov.iov_base = ubuf;
+        siocb->async_iov.iov_len = size;
 
-        return __sock_recvmsg(iocb, sock, &x->async_msg, size, flags);
+        iocb->private = siocb;
+        return siocb;
 }
 
+static ssize_t do_sock_read(struct msghdr *msg, struct kiocb *iocb,
+                struct file *file, struct iovec *iov, unsigned long nr_segs)
+{
+        struct socket *sock = file->private_data;
+        size_t size = 0;
+        int i;
 
-/*
- *      Write data to a socket. We verify that the user area ubuf..ubuf+size-1
- *      is readable by the user process.
- */
+        for (i = 0 ; i < nr_segs ; i++)
+                size += iov[i].iov_len;
 
-static ssize_t sock_aio_write(struct kiocb *iocb, const char __user *ubuf,
-                          size_t size, loff_t pos)
+        msg->msg_name = NULL;
+        msg->msg_namelen = 0;
+        msg->msg_control = NULL;
+        msg->msg_controllen = 0;
+        msg->msg_iov = (struct iovec *) iov;
+        msg->msg_iovlen = nr_segs;
+        msg->msg_flags = (file->f_flags & O_NONBLOCK) ? MSG_DONTWAIT : 0;
+
+        return __sock_recvmsg(iocb, sock, msg, size, msg->msg_flags);
+}
+
+static ssize_t sock_readv(struct file *file, const struct iovec *iov,
+                          unsigned long nr_segs, loff_t *ppos)
 {
-        struct sock_iocb *x, siocb;
-        struct socket *sock;
-        
+        struct kiocb iocb;
+        struct sock_iocb siocb;
+        struct msghdr msg;
+        int ret;
+
+        init_sync_kiocb(&iocb, NULL);
+        iocb.private = &siocb;
+
+        ret = do_sock_read(&msg, &iocb, file, (struct iovec *)iov, nr_segs);
+        if (-EIOCBQUEUED == ret)
+                ret = wait_on_sync_kiocb(&iocb);
+        return ret;
+}
+
+static ssize_t sock_aio_read(struct kiocb *iocb, char __user *ubuf,
+                         size_t count, loff_t pos)
+{
+        struct sock_iocb siocb, *x;
+
         if (pos != 0)
                 return -ESPIPE;
-        if(size==0)             /* Match SYS5 behaviour */
+        if (count == 0)         /* Match SYS5 behaviour */
                 return 0;
 
-        if (is_sync_kiocb(iocb))
-                x = &siocb;
-        else {
-                x = kmalloc(sizeof(struct sock_iocb), GFP_KERNEL);
-                if (!x)
-                        return -ENOMEM;
-                iocb->ki_dtor = sock_aio_dtor;
-        }
-        iocb->private = x;
-        x->kiocb = iocb;
-        sock = iocb->ki_filp->private_data; 
-
-        x->async_msg.msg_name = NULL;
-        x->async_msg.msg_namelen = 0;
-        x->async_msg.msg_iov = &x->async_iov;
-        x->async_msg.msg_iovlen = 1;
-        x->async_msg.msg_control = NULL;
-        x->async_msg.msg_controllen = 0;
-        x->async_msg.msg_flags = !(iocb->ki_filp->f_flags & O_NONBLOCK) ? 0 : MSG_DONTWAIT;
-        if (sock->type == SOCK_SEQPACKET)
-                x->async_msg.msg_flags |= MSG_EOR;
-        x->async_iov.iov_base = (void __user *)ubuf;
-        x->async_iov.iov_len = size;
-        
-        return __sock_sendmsg(iocb, sock, &x->async_msg, size);
+        x = alloc_sock_iocb(iocb, ubuf, count, &siocb);
+        if (!x)
+                return -ENOMEM;
+        return do_sock_read(&x->async_msg, iocb, iocb->ki_filp,
+                        &x->async_iov, 1);
 }
 
-static ssize_t sock_sendpage(struct file *file, struct page *page,
-                             int offset, size_t size, loff_t *ppos, int more)
+static ssize_t do_sock_write(struct msghdr *msg, struct kiocb *iocb,
+                struct file *file, struct iovec *iov, unsigned long nr_segs)
 {
-        struct socket *sock;
-        int flags;
+        struct socket *sock = file->private_data;
+        size_t size = 0;
+        int i;
 
-        sock = file->private_data;
+        for (i = 0 ; i < nr_segs ; i++)
+                size += iov[i].iov_len;
 
-        flags = !(file->f_flags & O_NONBLOCK) ? 0 : MSG_DONTWAIT;
-        if (more)
-                flags |= MSG_MORE;
+        msg->msg_name = NULL;
+        msg->msg_namelen = 0;
+        msg->msg_control = NULL;
+        msg->msg_controllen = 0;
+        msg->msg_iov = (struct iovec *) iov;
+        msg->msg_iovlen = nr_segs;
+        msg->msg_flags = (file->f_flags & O_NONBLOCK) ? MSG_DONTWAIT : 0;
+        if (sock->type == SOCK_SEQPACKET)
+                msg->msg_flags |= MSG_EOR;
 
-        return sock->ops->sendpage(sock, page, offset, size, flags);
+        return __sock_sendmsg(iocb, sock, msg, size);
 }
 
-static int sock_readv_writev(int type,
-                             struct file * file, const struct iovec * iov,
-                             long count, size_t size)
+static ssize_t sock_writev(struct file *file, const struct iovec *iov,
+                           unsigned long nr_segs, loff_t *ppos)
 {
         struct msghdr msg;
-        struct socket *sock;
+        struct kiocb iocb;
+        struct sock_iocb siocb;
+        int ret;
 
-        sock = file->private_data;
+        init_sync_kiocb(&iocb, NULL);
+        iocb.private = &siocb;
 
-        msg.msg_name = NULL;
-        msg.msg_namelen = 0;
-        msg.msg_control = NULL;
-        msg.msg_controllen = 0;
-        msg.msg_iov = (struct iovec *) iov;
-        msg.msg_iovlen = count;
-        msg.msg_flags = (file->f_flags & O_NONBLOCK) ? MSG_DONTWAIT : 0;
+        ret = do_sock_write(&msg, &iocb, file, (struct iovec *)iov, nr_segs);
+        if (-EIOCBQUEUED == ret)
+                ret = wait_on_sync_kiocb(&iocb);
+        return ret;
+}
 
-        /* read() does a VERIFY_WRITE */
-        if (type == VERIFY_WRITE)
-                return sock_recvmsg(sock, &msg, size, msg.msg_flags);
+static ssize_t sock_aio_write(struct kiocb *iocb, const char __user *ubuf,
+                          size_t count, loff_t pos)
+{
+        struct sock_iocb siocb, *x;
 
-        if (sock->type == SOCK_SEQPACKET)
-                msg.msg_flags |= MSG_EOR;
+        if (pos != 0)
+                return -ESPIPE;
+        if (count == 0)         /* Match SYS5 behaviour */
+                return 0;
 
-        return sock_sendmsg(sock, &msg, size);
-}
+        x = alloc_sock_iocb(iocb, (void __user *)ubuf, count, &siocb);
+        if (!x)
+                return -ENOMEM;
 
-static ssize_t sock_readv(struct file *file, const struct iovec *vector,
-                          unsigned long count, loff_t *ppos)
-{
-        size_t tot_len = 0;
-        int i;
-        for (i = 0 ; i < count ; i++)
-                tot_len += vector[i].iov_len;
-        return sock_readv_writev(VERIFY_WRITE,
-                                 file, vector, count, tot_len);
-}
-        
-static ssize_t sock_writev(struct file *file, const struct iovec *vector,
-                           unsigned long count, loff_t *ppos)
-{
-        size_t tot_len = 0;
-        int i;
-        for (i = 0 ; i < count ; i++)
-                tot_len += vector[i].iov_len;
-        return sock_readv_writev(VERIFY_READ,
-                                 file, vector, count, tot_len);
+        return do_sock_write(&x->async_msg, iocb, iocb->ki_filp,
+                        &x->async_iov, 1);
 }
 
 
@@ -904,6 +900,13 @@ static long sock_ioctl(struct file *file, unsigned cmd, unsigned long arg)
                         break;
                 default:
                         err = sock->ops->ioctl(sock, cmd, arg);
+
+                        /*
+                         * If this ioctl is unknown try to hand it down
+                         * to the NIC driver.
+                         */
+                        if (err == -ENOIOCTLCMD)
+                                err = dev_ioctl(cmd, argp);
                         break;
         }
         return err;
@@ -2036,7 +2039,7 @@ int sock_unregister(int family)
         return 0;
 }
 
-void __init sock_init(void)
+static int __init sock_init(void)
 {
         /*
          *      Initialize sock SLAB cache.
@@ -2044,12 +2047,10 @@ void __init sock_init(void)
          
         sk_init();
 
-#ifdef SLAB_SKB
         /*
          *      Initialize skbuff SLAB cache 
          */
         skb_init();
-#endif
 
         /*
          *      Initialize the protocols module. 
@@ -2058,15 +2059,19 @@ void __init sock_init(void)
         init_inodecache();
         register_filesystem(&sock_fs_type);
         sock_mnt = kern_mount(&sock_fs_type);
-        /* The real protocol initialization is performed when
-         *  do_initcalls is run.  
+
+        /* The real protocol initialization is performed in later initcalls.
          */
 
 #ifdef CONFIG_NETFILTER
         netfilter_init();
 #endif
+
+        return 0;
 }
 
+core_initcall(sock_init);       /* early initcall */
+
 #ifdef CONFIG_PROC_FS
 void socket_seq_show(struct seq_file *seq)
 {
diff --git a/net/sunrpc/svcsock.c b/net/sunrpc/svcsock.c
index c6a51911e71e..d68eba481291 100644
--- a/net/sunrpc/svcsock.c
+++ b/net/sunrpc/svcsock.c
@@ -758,7 +758,7 @@ svc_tcp_accept(struct svc_sock *svsk)
         struct svc_serv *serv = svsk->sk_server;
         struct socket   *sock = svsk->sk_sock;
         struct socket   *newsock;
-        struct proto_ops *ops;
+        const struct proto_ops *ops;
         struct svc_sock *newsvsk;
         int             err, slen;
 
diff --git a/net/unix/af_unix.c b/net/unix/af_unix.c
index acc73ba8bade..5f6ae79b8b16 100644
--- a/net/unix/af_unix.c
+++ b/net/unix/af_unix.c
@@ -121,7 +121,7 @@
 int sysctl_unix_max_dgram_qlen = 10;
 
 struct hlist_head unix_socket_table[UNIX_HASH_SIZE + 1];
-DEFINE_RWLOCK(unix_table_lock);
+DEFINE_SPINLOCK(unix_table_lock);
 static atomic_t unix_nr_socks = ATOMIC_INIT(0);
 
 #define unix_sockets_unbound    (&unix_socket_table[UNIX_HASH_SIZE])
@@ -130,7 +130,7 @@ static atomic_t unix_nr_socks = ATOMIC_INIT(0);
 
 /*
  *  SMP locking strategy:
- *    hash table is protected with rwlock unix_table_lock
+ *    hash table is protected with spinlock unix_table_lock
  *    each socket state is protected by separate rwlock.
  */
 
@@ -214,16 +214,16 @@ static void __unix_insert_socket(struct hlist_head *list, struct sock *sk)
 
 static inline void unix_remove_socket(struct sock *sk)
 {
-        write_lock(&unix_table_lock);
+        spin_lock(&unix_table_lock);
         __unix_remove_socket(sk);
-        write_unlock(&unix_table_lock);
+        spin_unlock(&unix_table_lock);
 }
 
 static inline void unix_insert_socket(struct hlist_head *list, struct sock *sk)
 {
-        write_lock(&unix_table_lock);
+        spin_lock(&unix_table_lock);
         __unix_insert_socket(list, sk);
-        write_unlock(&unix_table_lock);
+        spin_unlock(&unix_table_lock);
 }
 
 static struct sock *__unix_find_socket_byname(struct sockaddr_un *sunname,
@@ -250,11 +250,11 @@ static inline struct sock *unix_find_socket_byname(struct sockaddr_un *sunname,
 {
         struct sock *s;
 
-        read_lock(&unix_table_lock);
+        spin_lock(&unix_table_lock);
         s = __unix_find_socket_byname(sunname, len, type, hash);
         if (s)
                 sock_hold(s);
-        read_unlock(&unix_table_lock);
+        spin_unlock(&unix_table_lock);
         return s;
 }
 
@@ -263,7 +263,7 @@ static struct sock *unix_find_socket_byinode(struct inode *i)
         struct sock *s;
         struct hlist_node *node;
 
-        read_lock(&unix_table_lock);
+        spin_lock(&unix_table_lock);
         sk_for_each(s, node,
                     &unix_socket_table[i->i_ino & (UNIX_HASH_SIZE - 1)]) {
                 struct dentry *dentry = unix_sk(s)->dentry;
@@ -276,7 +276,7 @@ static struct sock *unix_find_socket_byinode(struct inode *i)
         }
         s = NULL;
 found:
-        read_unlock(&unix_table_lock);
+        spin_unlock(&unix_table_lock);
         return s;
 }
 
@@ -473,7 +473,7 @@ static int unix_dgram_connect(struct socket *, struct sockaddr *,
 static int unix_seqpacket_sendmsg(struct kiocb *, struct socket *,
                                   struct msghdr *, size_t);
 
-static struct proto_ops unix_stream_ops = {
+static const struct proto_ops unix_stream_ops = {
         .family =       PF_UNIX,
         .owner =        THIS_MODULE,
         .release =      unix_release,
@@ -494,7 +494,7 @@ static struct proto_ops unix_stream_ops = {
         .sendpage =     sock_no_sendpage,
 };
 
-static struct proto_ops unix_dgram_ops = {
+static const struct proto_ops unix_dgram_ops = {
         .family =       PF_UNIX,
         .owner =        THIS_MODULE,
         .release =      unix_release,
@@ -515,7 +515,7 @@ static struct proto_ops unix_dgram_ops = {
         .sendpage =     sock_no_sendpage,
 };
 
-static struct proto_ops unix_seqpacket_ops = {
+static const struct proto_ops unix_seqpacket_ops = {
         .family =       PF_UNIX,
         .owner =        THIS_MODULE,
         .release =      unix_release,
@@ -564,7 +564,7 @@ static struct sock * unix_create1(struct socket *sock)
         u         = unix_sk(sk);
         u->dentry = NULL;
         u->mnt    = NULL;
-        rwlock_init(&u->lock);
+        spin_lock_init(&u->lock);
         atomic_set(&u->inflight, sock ? 0 : -1);
         init_MUTEX(&u->readsem); /* single task reading lock */
         init_waitqueue_head(&u->peer_wait);
@@ -642,12 +642,12 @@ retry:
         addr->len = sprintf(addr->name->sun_path+1, "%05x", ordernum) + 1 + sizeof(short);
         addr->hash = unix_hash_fold(csum_partial((void*)addr->name, addr->len, 0));
 
-        write_lock(&unix_table_lock);
+        spin_lock(&unix_table_lock);
         ordernum = (ordernum+1)&0xFFFFF;
 
         if (__unix_find_socket_byname(addr->name, addr->len, sock->type,
                                       addr->hash)) {
-                write_unlock(&unix_table_lock);
+                spin_unlock(&unix_table_lock);
                 /* Sanity yield. It is unusual case, but yet... */
                 if (!(ordernum&0xFF))
                         yield();
@@ -658,7 +658,7 @@ retry:
         __unix_remove_socket(sk);
         u->addr = addr;
         __unix_insert_socket(&unix_socket_table[addr->hash], sk);
-        write_unlock(&unix_table_lock);
+        spin_unlock(&unix_table_lock);
         err = 0;
 
 out:    up(&u->readsem);
@@ -791,7 +791,7 @@ static int unix_bind(struct socket *sock, struct sockaddr *uaddr, int addr_len)
                 addr->hash = UNIX_HASH_SIZE;
         }
 
-        write_lock(&unix_table_lock);
+        spin_lock(&unix_table_lock);
 
         if (!sunaddr->sun_path[0]) {
                 err = -EADDRINUSE;
@@ -814,7 +814,7 @@ static int unix_bind(struct socket *sock, struct sockaddr *uaddr, int addr_len)
         __unix_insert_socket(list, sk);
 
 out_unlock:
-        write_unlock(&unix_table_lock);
+        spin_unlock(&unix_table_lock);
 out_up:
         up(&u->readsem);
 out:
@@ -1063,10 +1063,12 @@ restart:
         /* Set credentials */
         sk->sk_peercred = other->sk_peercred;
 
-        sock_hold(newsk);
-        unix_peer(sk)   = newsk;
         sock->state     = SS_CONNECTED;
         sk->sk_state    = TCP_ESTABLISHED;
+        sock_hold(newsk);
+
+        smp_mb__after_atomic_inc();     /* sock_hold() does an atomic_inc() */
+        unix_peer(sk)   = newsk;
 
         unix_state_wunlock(sk);
 
@@ -1414,7 +1416,7 @@ static int unix_stream_sendmsg(struct kiocb *kiocb, struct socket *sock,
         } else {
                 sunaddr = NULL;
                 err = -ENOTCONN;
-                other = unix_peer_get(sk);
+                other = unix_peer(sk);
                 if (!other)
                         goto out_err;
         }
@@ -1476,7 +1478,6 @@ static int unix_stream_sendmsg(struct kiocb *kiocb, struct socket *sock,
                 other->sk_data_ready(other, size);
                 sent+=size;
         }
-        sock_put(other);
 
         scm_destroy(siocb->scm);
         siocb->scm = NULL;
@@ -1491,8 +1492,6 @@ pipe_err:
                 send_sig(SIGPIPE,current,0);
         err = -EPIPE;
 out_err:
-        if (other)
-                sock_put(other);
         scm_destroy(siocb->scm);
         siocb->scm = NULL;
         return sent ? : err;
@@ -1860,7 +1859,7 @@ static int unix_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg)
                 }
 
                 default:
-                        err = dev_ioctl(cmd, (void __user *)arg);
+                        err = -ENOIOCTLCMD;
                         break;
         }
         return err;
@@ -1917,7 +1916,7 @@ static struct sock *unix_seq_idx(int *iter, loff_t pos)
 
 static void *unix_seq_start(struct seq_file *seq, loff_t *pos)
 {
-        read_lock(&unix_table_lock);
+        spin_lock(&unix_table_lock);
         return *pos ? unix_seq_idx(seq->private, *pos - 1) : ((void *) 1);
 }
 
@@ -1932,7 +1931,7 @@ static void *unix_seq_next(struct seq_file *seq, void *v, loff_t *pos)
 
 static void unix_seq_stop(struct seq_file *seq, void *v)
 {
-        read_unlock(&unix_table_lock);
+        spin_unlock(&unix_table_lock);
 }
 
 static int unix_seq_show(struct seq_file *seq, void *v)
diff --git a/net/unix/garbage.c b/net/unix/garbage.c
index 6ffc64e1712d..411802bd4d37 100644
--- a/net/unix/garbage.c
+++ b/net/unix/garbage.c
@@ -182,7 +182,7 @@ void unix_gc(void)
         if (down_trylock(&unix_gc_sem))
                 return;
 
-        read_lock(&unix_table_lock);
+        spin_lock(&unix_table_lock);
 
         forall_unix_sockets(i, s)
         {
@@ -301,7 +301,7 @@ void unix_gc(void)
                 }
                 u->gc_tree = GC_ORPHAN;
         }
-        read_unlock(&unix_table_lock);
+        spin_unlock(&unix_table_lock);
 
         /*
          *      Here we are. Hitlist is filled. Die.
diff --git a/net/wanrouter/af_wanpipe.c b/net/wanrouter/af_wanpipe.c
index 59fec59b2132..7a43ae4721ed 100644
--- a/net/wanrouter/af_wanpipe.c
+++ b/net/wanrouter/af_wanpipe.c
@@ -181,7 +181,7 @@ struct wanpipe_opt
 #endif
 
 static int sk_count;
-extern struct proto_ops wanpipe_ops;
+extern const struct proto_ops wanpipe_ops;
 static unsigned long find_free_critical;
 
 static void wanpipe_unlink_driver(struct sock *sk);
@@ -1839,7 +1839,7 @@ static int wanpipe_ioctl(struct socket *sock, unsigned int cmd, unsigned long ar
 #endif
 
                 default:
-                        return dev_ioctl(cmd,(void __user *) arg);
+                        return -ENOIOCTLCMD;
         }
         /*NOTREACHED*/
 }
@@ -2546,7 +2546,7 @@ static int wanpipe_connect(struct socket *sock, struct sockaddr *uaddr, int addr
         return 0;
 }
 
-struct proto_ops wanpipe_ops = {
+const struct proto_ops wanpipe_ops = {
         .family =       PF_WANPIPE,
         .owner =        THIS_MODULE,
         .release =      wanpipe_release,
diff --git a/net/x25/af_x25.c b/net/x25/af_x25.c
index 020d73cc8414..16459c7f54b2 100644
--- a/net/x25/af_x25.c
+++ b/net/x25/af_x25.c
@@ -64,7 +64,7 @@ int sysctl_x25_ack_holdback_timeout    = X25_DEFAULT_T2;
 HLIST_HEAD(x25_list);
 DEFINE_RWLOCK(x25_list_lock);
 
-static struct proto_ops x25_proto_ops;
+static const struct proto_ops x25_proto_ops;
 
 static struct x25_address null_x25_address = {"               "};
 
@@ -1378,7 +1378,7 @@ static int x25_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg)
                 }
 
                 default:
-                        rc = dev_ioctl(cmd, argp);
+                        rc = -ENOIOCTLCMD;
                         break;
         }
 
@@ -1391,7 +1391,7 @@ static struct net_proto_family x25_family_ops = {
         .owner  =       THIS_MODULE,
 };
 
-static struct proto_ops SOCKOPS_WRAPPED(x25_proto_ops) = {
+static const struct proto_ops SOCKOPS_WRAPPED(x25_proto_ops) = {
         .family =       AF_X25,
         .owner =        THIS_MODULE,
         .release =      x25_release,
diff --git a/net/xfrm/xfrm_policy.c b/net/xfrm/xfrm_policy.c
index d19e274b9c4a..64a447375fdb 100644
--- a/net/xfrm/xfrm_policy.c
+++ b/net/xfrm/xfrm_policy.c
@@ -10,7 +10,7 @@
  *      YOSHIFUJI Hideaki
  *              Split up af-specific portion
  *      Derek Atkins <derek@ihtfp.com>          Add the post_input processor
- *      
+ *
  */
 
 #include <asm/bug.h>
@@ -256,6 +256,7 @@ void __xfrm_policy_destroy(struct xfrm_policy *policy)
         if (del_timer(&policy->timer))
                 BUG();
 
+        security_xfrm_policy_free(policy);
         kfree(policy);
 }
 EXPORT_SYMBOL(__xfrm_policy_destroy);
@@ -350,7 +351,8 @@ int xfrm_policy_insert(int dir, struct xfrm_policy *policy, int excl)
 
         write_lock_bh(&xfrm_policy_lock);
         for (p = &xfrm_policy_list[dir]; (pol=*p)!=NULL;) {
-                if (!delpol && memcmp(&policy->selector, &pol->selector, sizeof(pol->selector)) == 0) {
+                if (!delpol && memcmp(&policy->selector, &pol->selector, sizeof(pol->selector)) == 0 &&
+                    xfrm_sec_ctx_match(pol->security, policy->security)) {
                         if (excl) {
                                 write_unlock_bh(&xfrm_policy_lock);
                                 return -EEXIST;
@@ -416,14 +418,15 @@ int xfrm_policy_insert(int dir, struct xfrm_policy *policy, int excl)
 }
 EXPORT_SYMBOL(xfrm_policy_insert);
 
-struct xfrm_policy *xfrm_policy_bysel(int dir, struct xfrm_selector *sel,
-                                      int delete)
+struct xfrm_policy *xfrm_policy_bysel_ctx(int dir, struct xfrm_selector *sel,
+                                          struct xfrm_sec_ctx *ctx, int delete)
 {
         struct xfrm_policy *pol, **p;
 
         write_lock_bh(&xfrm_policy_lock);
         for (p = &xfrm_policy_list[dir]; (pol=*p)!=NULL; p = &pol->next) {
-                if (memcmp(sel, &pol->selector, sizeof(*sel)) == 0) {
+                if ((memcmp(sel, &pol->selector, sizeof(*sel)) == 0) &&
+                    (xfrm_sec_ctx_match(ctx, pol->security))) {
                         xfrm_pol_hold(pol);
                         if (delete)
                                 *p = pol->next;
@@ -438,7 +441,7 @@ struct xfrm_policy *xfrm_policy_bysel(int dir, struct xfrm_selector *sel,
         }
         return pol;
 }
-EXPORT_SYMBOL(xfrm_policy_bysel);
+EXPORT_SYMBOL(xfrm_policy_bysel_ctx);
 
 struct xfrm_policy *xfrm_policy_byid(int dir, u32 id, int delete)
 {
@@ -519,7 +522,7 @@ EXPORT_SYMBOL(xfrm_policy_walk);
 
 /* Find policy to apply to this flow. */
 
-static void xfrm_policy_lookup(struct flowi *fl, u16 family, u8 dir,
+static void xfrm_policy_lookup(struct flowi *fl, u32 sk_sid, u16 family, u8 dir,
                                void **objp, atomic_t **obj_refp)
 {
         struct xfrm_policy *pol;
@@ -533,9 +536,12 @@ static void xfrm_policy_lookup(struct flowi *fl, u16 family, u8 dir,
                         continue;
 
                 match = xfrm_selector_match(sel, fl, family);
+
                 if (match) {
-                        xfrm_pol_hold(pol);
-                        break;
+                        if (!security_xfrm_policy_lookup(pol, sk_sid, dir)) {
+                                xfrm_pol_hold(pol);
+                                break;
+                        }
                 }
         }
         read_unlock_bh(&xfrm_policy_lock);
@@ -543,15 +549,37 @@ static void xfrm_policy_lookup(struct flowi *fl, u16 family, u8 dir,
                 *obj_refp = &pol->refcnt;
 }
 
-static struct xfrm_policy *xfrm_sk_policy_lookup(struct sock *sk, int dir, struct flowi *fl)
+static inline int policy_to_flow_dir(int dir)
+{
+        if (XFRM_POLICY_IN == FLOW_DIR_IN &&
+            XFRM_POLICY_OUT == FLOW_DIR_OUT &&
+            XFRM_POLICY_FWD == FLOW_DIR_FWD)
+                return dir;
+        switch (dir) {
+        default:
+        case XFRM_POLICY_IN:
+                return FLOW_DIR_IN;
+        case XFRM_POLICY_OUT:
+                return FLOW_DIR_OUT;
+        case XFRM_POLICY_FWD:
+                return FLOW_DIR_FWD;
+        };
+}
+
+static struct xfrm_policy *xfrm_sk_policy_lookup(struct sock *sk, int dir, struct flowi *fl, u32 sk_sid)
 {
         struct xfrm_policy *pol;
 
         read_lock_bh(&xfrm_policy_lock);
         if ((pol = sk->sk_policy[dir]) != NULL) {
-                int match = xfrm_selector_match(&pol->selector, fl,
+                int match = xfrm_selector_match(&pol->selector, fl,
                                                 sk->sk_family);
+                int err = 0;
+
                 if (match)
+                  err = security_xfrm_policy_lookup(pol, sk_sid, policy_to_flow_dir(dir));
+
+                if (match && !err)
                         xfrm_pol_hold(pol);
                 else
                         pol = NULL;
@@ -624,6 +652,10 @@ static struct xfrm_policy *clone_policy(struct xfrm_policy *old, int dir)
 
         if (newp) {
                 newp->selector = old->selector;
+                if (security_xfrm_policy_clone(old, newp)) {
+                        kfree(newp);
+                        return NULL;  /* ENOMEM */
+                }
                 newp->lft = old->lft;
                 newp->curlft = old->curlft;
                 newp->action = old->action;
@@ -735,22 +767,6 @@ xfrm_bundle_create(struct xfrm_policy *policy, struct xfrm_state **xfrm, int nx,
         return err;
 }
 
-static inline int policy_to_flow_dir(int dir)
-{
-        if (XFRM_POLICY_IN == FLOW_DIR_IN &&
-            XFRM_POLICY_OUT == FLOW_DIR_OUT &&
-            XFRM_POLICY_FWD == FLOW_DIR_FWD)
-                return dir;
-        switch (dir) {
-        default:
-        case XFRM_POLICY_IN:
-                return FLOW_DIR_IN;
-        case XFRM_POLICY_OUT:
-                return FLOW_DIR_OUT;
-        case XFRM_POLICY_FWD:
-                return FLOW_DIR_FWD;
-        };
-}
 
 static int stale_bundle(struct dst_entry *dst);
 
@@ -769,19 +785,20 @@ int xfrm_lookup(struct dst_entry **dst_p, struct flowi *fl,
         int err;
         u32 genid;
         u16 family = dst_orig->ops->family;
+        u8 dir = policy_to_flow_dir(XFRM_POLICY_OUT);
+        u32 sk_sid = security_sk_sid(sk, fl, dir);
 restart:
         genid = atomic_read(&flow_cache_genid);
         policy = NULL;
         if (sk && sk->sk_policy[1])
-                policy = xfrm_sk_policy_lookup(sk, XFRM_POLICY_OUT, fl);
+                policy = xfrm_sk_policy_lookup(sk, XFRM_POLICY_OUT, fl, sk_sid);
 
         if (!policy) {
                 /* To accelerate a bit...  */
                 if ((dst_orig->flags & DST_NOXFRM) || !xfrm_policy_list[XFRM_POLICY_OUT])
                         return 0;
 
-                policy = flow_cache_lookup(fl, family,
-                                           policy_to_flow_dir(XFRM_POLICY_OUT),
+                policy = flow_cache_lookup(fl, sk_sid, family, dir,
                                            xfrm_policy_lookup);
         }
 
@@ -962,16 +979,20 @@ int __xfrm_policy_check(struct sock *sk, int dir, struct sk_buff *skb,
 {
         struct xfrm_policy *pol;
         struct flowi fl;
+        u8 fl_dir = policy_to_flow_dir(dir);
+        u32 sk_sid;
 
         if (_decode_session(skb, &fl, family) < 0)
                 return 0;
 
+        sk_sid = security_sk_sid(sk, &fl, fl_dir);
+
         /* First, check used SA against their selectors. */
         if (skb->sp) {
                 int i;
 
                 for (i=skb->sp->len-1; i>=0; i--) {
-                  struct sec_decap_state *xvec = &(skb->sp->x[i]);
+                        struct sec_decap_state *xvec = &(skb->sp->x[i]);
                         if (!xfrm_selector_match(&xvec->xvec->sel, &fl, family))
                                 return 0;
 
@@ -986,11 +1007,10 @@ int __xfrm_policy_check(struct sock *sk, int dir, struct sk_buff *skb,
 
         pol = NULL;
         if (sk && sk->sk_policy[dir])
-                pol = xfrm_sk_policy_lookup(sk, dir, &fl);
+                pol = xfrm_sk_policy_lookup(sk, dir, &fl, sk_sid);
 
         if (!pol)
-                pol = flow_cache_lookup(&fl, family,
-                                        policy_to_flow_dir(dir),
+                pol = flow_cache_lookup(&fl, sk_sid, family, fl_dir,
                                         xfrm_policy_lookup);
 
         if (!pol)
diff --git a/net/xfrm/xfrm_state.c b/net/xfrm/xfrm_state.c
index 479effc97666..e12d0be5f976 100644
--- a/net/xfrm/xfrm_state.c
+++ b/net/xfrm/xfrm_state.c
@@ -10,7 +10,7 @@
  *              Split up af-specific functions
  *      Derek Atkins <derek@ihtfp.com>
  *              Add UDP Encapsulation
- *      
+ *
  */
 
 #include <linux/workqueue.h>
@@ -70,6 +70,7 @@ static void xfrm_state_gc_destroy(struct xfrm_state *x)
                 x->type->destructor(x);
                 xfrm_put_type(x->type);
         }
+        security_xfrm_state_free(x);
         kfree(x);
 }
 
@@ -343,7 +344,8 @@ xfrm_state_find(xfrm_address_t *daddr, xfrm_address_t *saddr,
                               selector.
                          */
                         if (x->km.state == XFRM_STATE_VALID) {
-                                if (!xfrm_selector_match(&x->sel, fl, family))
+                                if (!xfrm_selector_match(&x->sel, fl, family) ||
+                                    !xfrm_sec_ctx_match(pol->security, x->security))
                                         continue;
                                 if (!best ||
                                     best->km.dying > x->km.dying ||
@@ -354,7 +356,8 @@ xfrm_state_find(xfrm_address_t *daddr, xfrm_address_t *saddr,
                                 acquire_in_progress = 1;
                         } else if (x->km.state == XFRM_STATE_ERROR ||
                                    x->km.state == XFRM_STATE_EXPIRED) {
-                                if (xfrm_selector_match(&x->sel, fl, family))
+                                if (xfrm_selector_match(&x->sel, fl, family) &&
+                                    xfrm_sec_ctx_match(pol->security, x->security))
                                         error = -ESRCH;
                         }
                 }
diff --git a/net/xfrm/xfrm_user.c b/net/xfrm/xfrm_user.c
index 0cdd9a07e043..92e2b804c606 100644
--- a/net/xfrm/xfrm_user.c
+++ b/net/xfrm/xfrm_user.c
@@ -7,7 +7,7 @@
  *      Kazunori MIYAZAWA @USAGI
  *      Kunihiro Ishiguro <kunihiro@ipinfusion.com>
  *              IPv6 support
- *      
+ *
  */
 
 #include <linux/module.h>
@@ -88,6 +88,34 @@ static int verify_encap_tmpl(struct rtattr **xfrma)
         return 0;
 }
 
+
+static inline int verify_sec_ctx_len(struct rtattr **xfrma)
+{
+        struct rtattr *rt = xfrma[XFRMA_SEC_CTX - 1];
+        struct xfrm_user_sec_ctx *uctx;
+        int len = 0;
+
+        if (!rt)
+                return 0;
+
+        if (rt->rta_len < sizeof(*uctx))
+                return -EINVAL;
+
+        uctx = RTA_DATA(rt);
+
+        if (uctx->ctx_len > PAGE_SIZE)
+                return -EINVAL;
+
+        len += sizeof(struct xfrm_user_sec_ctx);
+        len += uctx->ctx_len;
+
+        if (uctx->len != len)
+                return -EINVAL;
+
+        return 0;
+}
+
+
 static int verify_newsa_info(struct xfrm_usersa_info *p,
                              struct rtattr **xfrma)
 {
@@ -145,6 +173,8 @@ static int verify_newsa_info(struct xfrm_usersa_info *p,
                 goto out;
         if ((err = verify_encap_tmpl(xfrma)))
                 goto out;
+        if ((err = verify_sec_ctx_len(xfrma)))
+                goto out;
 
         err = -EINVAL;
         switch (p->mode) {
@@ -209,6 +239,30 @@ static int attach_encap_tmpl(struct xfrm_encap_tmpl **encapp, struct rtattr *u_a
         return 0;
 }
 
+
+static inline int xfrm_user_sec_ctx_size(struct xfrm_policy *xp)
+{
+        struct xfrm_sec_ctx *xfrm_ctx = xp->security;
+        int len = 0;
+
+        if (xfrm_ctx) {
+                len += sizeof(struct xfrm_user_sec_ctx);
+                len += xfrm_ctx->ctx_len;
+        }
+        return len;
+}
+
+static int attach_sec_ctx(struct xfrm_state *x, struct rtattr *u_arg)
+{
+        struct xfrm_user_sec_ctx *uctx;
+
+        if (!u_arg)
+                return 0;
+
+        uctx = RTA_DATA(u_arg);
+        return security_xfrm_state_alloc(x, uctx);
+}
+
 static void copy_from_user_state(struct xfrm_state *x, struct xfrm_usersa_info *p)
 {
         memcpy(&x->id, &p->id, sizeof(x->id));
@@ -253,6 +307,9 @@ static struct xfrm_state *xfrm_state_construct(struct xfrm_usersa_info *p,
         if (err)
                 goto error;
 
+        if ((err = attach_sec_ctx(x, xfrma[XFRMA_SEC_CTX-1])))
+                goto error;
+
         x->km.seq = p->seq;
 
         return x;
@@ -272,11 +329,11 @@ static int xfrm_add_sa(struct sk_buff *skb, struct nlmsghdr *nlh, void **xfrma)
         int err;
         struct km_event c;
 
-        err = verify_newsa_info(p, (struct rtattr **) xfrma);
+        err = verify_newsa_info(p, (struct rtattr **)xfrma);
         if (err)
                 return err;
 
-        x = xfrm_state_construct(p, (struct rtattr **) xfrma, &err);
+        x = xfrm_state_construct(p, (struct rtattr **)xfrma, &err);
         if (!x)
                 return err;
 
@@ -390,6 +447,19 @@ static int dump_one_state(struct xfrm_state *x, int count, void *ptr)
         if (x->encap)
                 RTA_PUT(skb, XFRMA_ENCAP, sizeof(*x->encap), x->encap);
 
+        if (x->security) {
+                int ctx_size = sizeof(struct xfrm_sec_ctx) +
+                                x->security->ctx_len;
+                struct rtattr *rt = __RTA_PUT(skb, XFRMA_SEC_CTX, ctx_size);
+                struct xfrm_user_sec_ctx *uctx = RTA_DATA(rt);
+
+                uctx->exttype = XFRMA_SEC_CTX;
+                uctx->len = ctx_size;
+                uctx->ctx_doi = x->security->ctx_doi;
+                uctx->ctx_alg = x->security->ctx_alg;
+                uctx->ctx_len = x->security->ctx_len;
+                memcpy(uctx + 1, x->security->ctx_str, x->security->ctx_len);
+        }
         nlh->nlmsg_len = skb->tail - b;
 out:
         sp->this_idx++;
@@ -603,6 +673,18 @@ static int verify_newpolicy_info(struct xfrm_userpolicy_info *p)
         return verify_policy_dir(p->dir);
 }
 
+static int copy_from_user_sec_ctx(struct xfrm_policy *pol, struct rtattr **xfrma)
+{
+        struct rtattr *rt = xfrma[XFRMA_SEC_CTX-1];
+        struct xfrm_user_sec_ctx *uctx;
+
+        if (!rt)
+                return 0;
+
+        uctx = RTA_DATA(rt);
+        return security_xfrm_policy_alloc(pol, uctx);
+}
+
 static void copy_templates(struct xfrm_policy *xp, struct xfrm_user_tmpl *ut,
                            int nr)
 {
@@ -681,7 +763,10 @@ static struct xfrm_policy *xfrm_policy_construct(struct xfrm_userpolicy_info *p,
         }
 
         copy_from_user_policy(xp, p);
-        err = copy_from_user_tmpl(xp, xfrma);
+
+        if (!(err = copy_from_user_tmpl(xp, xfrma)))
+                err = copy_from_user_sec_ctx(xp, xfrma);
+
         if (err) {
                 *errp = err;
                 kfree(xp);
@@ -702,8 +787,11 @@ static int xfrm_add_policy(struct sk_buff *skb, struct nlmsghdr *nlh, void **xfr
         err = verify_newpolicy_info(p);
         if (err)
                 return err;
+        err = verify_sec_ctx_len((struct rtattr **)xfrma);
+        if (err)
+                return err;
 
-        xp = xfrm_policy_construct(p, (struct rtattr **) xfrma, &err);
+        xp = xfrm_policy_construct(p, (struct rtattr **)xfrma, &err);
         if (!xp)
                 return err;
 
@@ -761,6 +849,27 @@ rtattr_failure:
         return -1;
 }
 
+static int copy_to_user_sec_ctx(struct xfrm_policy *xp, struct sk_buff *skb)
+{
+        if (xp->security) {
+                int ctx_size = sizeof(struct xfrm_sec_ctx) +
+                                xp->security->ctx_len;
+                struct rtattr *rt = __RTA_PUT(skb, XFRMA_SEC_CTX, ctx_size);
+                struct xfrm_user_sec_ctx *uctx = RTA_DATA(rt);
+
+                uctx->exttype = XFRMA_SEC_CTX;
+                uctx->len = ctx_size;
+                uctx->ctx_doi = xp->security->ctx_doi;
+                uctx->ctx_alg = xp->security->ctx_alg;
+                uctx->ctx_len = xp->security->ctx_len;
+                memcpy(uctx + 1, xp->security->ctx_str, xp->security->ctx_len);
+        }
+        return 0;
+
+ rtattr_failure:
+        return -1;
+}
+
 static int dump_one_policy(struct xfrm_policy *xp, int dir, int count, void *ptr)
 {
         struct xfrm_dump_info *sp = ptr;
@@ -782,6 +891,8 @@ static int dump_one_policy(struct xfrm_policy *xp, int dir, int count, void *ptr
         copy_to_user_policy(xp, p, dir);
         if (copy_to_user_tmpl(xp, skb) < 0)
                 goto nlmsg_failure;
+        if (copy_to_user_sec_ctx(xp, skb))
+                goto nlmsg_failure;
 
         nlh->nlmsg_len = skb->tail - b;
 out:
@@ -852,8 +963,25 @@ static int xfrm_get_policy(struct sk_buff *skb, struct nlmsghdr *nlh, void **xfr
 
         if (p->index)
                 xp = xfrm_policy_byid(p->dir, p->index, delete);
-        else
-                xp = xfrm_policy_bysel(p->dir, &p->sel, delete);
+        else {
+                struct rtattr **rtattrs = (struct rtattr **)xfrma;
+                struct rtattr *rt = rtattrs[XFRMA_SEC_CTX-1];
+                struct xfrm_policy tmp;
+
+                err = verify_sec_ctx_len(rtattrs);
+                if (err)
+                        return err;
+
+                memset(&tmp, 0, sizeof(struct xfrm_policy));
+                if (rt) {
+                        struct xfrm_user_sec_ctx *uctx = RTA_DATA(rt);
+
+                        if ((err = security_xfrm_policy_alloc(&tmp, uctx)))
+                                return err;
+                }
+                xp = xfrm_policy_bysel_ctx(p->dir, &p->sel, tmp.security, delete);
+                security_xfrm_policy_free(&tmp);
+        }
         if (xp == NULL)
                 return -ENOENT;
 
@@ -1224,6 +1352,8 @@ static int build_acquire(struct sk_buff *skb, struct xfrm_state *x,
 
         if (copy_to_user_tmpl(xp, skb) < 0)
                 goto nlmsg_failure;
+        if (copy_to_user_sec_ctx(xp, skb))
+                goto nlmsg_failure;
 
         nlh->nlmsg_len = skb->tail - b;
         return skb->len;
@@ -1241,6 +1371,7 @@ static int xfrm_send_acquire(struct xfrm_state *x, struct xfrm_tmpl *xt,
 
         len = RTA_SPACE(sizeof(struct xfrm_user_tmpl) * xp->xfrm_nr);
         len += NLMSG_SPACE(sizeof(struct xfrm_user_acquire));
+        len += RTA_SPACE(xfrm_user_sec_ctx_size(xp));
         skb = alloc_skb(len, GFP_ATOMIC);
         if (skb == NULL)
                 return -ENOMEM;
@@ -1324,6 +1455,8 @@ static int build_polexpire(struct sk_buff *skb, struct xfrm_policy *xp,
         copy_to_user_policy(xp, &upe->pol, dir);
         if (copy_to_user_tmpl(xp, skb) < 0)
                 goto nlmsg_failure;
+        if (copy_to_user_sec_ctx(xp, skb))
+                goto nlmsg_failure;
         upe->hard = !!hard;
 
         nlh->nlmsg_len = skb->tail - b;
@@ -1341,6 +1474,7 @@ static int xfrm_exp_policy_notify(struct xfrm_policy *xp, int dir, struct km_eve
 
         len = RTA_SPACE(sizeof(struct xfrm_user_tmpl) * xp->xfrm_nr);
         len += NLMSG_SPACE(sizeof(struct xfrm_user_polexpire));
+        len += RTA_SPACE(xfrm_user_sec_ctx_size(xp));
         skb = alloc_skb(len, GFP_ATOMIC);
         if (skb == NULL)
                 return -ENOMEM;