Merge branch 'master' into for-next

56 files changed, 281 insertions, 102 deletions

diff --git a/net/ipv4/af_inet.c b/net/ipv4/af_inet.c
index 33b7dffa7732..f71357422380 100644
--- a/net/ipv4/af_inet.c
+++ b/net/ipv4/af_inet.c
@@ -86,6 +86,7 @@
 #include <linux/poll.h>
 #include <linux/netfilter_ipv4.h>
 #include <linux/random.h>
+#include <linux/slab.h>
 
 #include <asm/uaccess.h>
 #include <asm/system.h>
@@ -530,6 +531,8 @@ int inet_dgram_connect(struct socket *sock, struct sockaddr * uaddr,
 {
 	struct sock *sk = sock->sk;
 
+	if (addr_len < sizeof(uaddr->sa_family))
+		return -EINVAL;
 	if (uaddr->sa_family == AF_UNSPEC)
 		return sk->sk_prot->disconnect(sk, flags);
 
@@ -573,6 +576,9 @@ int inet_stream_connect(struct socket *sock, struct sockaddr *uaddr,
 	int err;
 	long timeo;
 
+	if (addr_len < sizeof(uaddr->sa_family))
+		return -EINVAL;
+
 	lock_sock(sk);
 
 	if (uaddr->sa_family == AF_UNSPEC) {
diff --git a/net/ipv4/ah4.c b/net/ipv4/ah4.c
index 987b47dc69ad..880a5ec6dce0 100644
--- a/net/ipv4/ah4.c
+++ b/net/ipv4/ah4.c
@@ -1,6 +1,7 @@
 #include <crypto/hash.h>
 #include <linux/err.h>
 #include <linux/module.h>
+#include <linux/slab.h>
 #include <net/ip.h>
 #include <net/xfrm.h>
 #include <net/ah.h>
diff --git a/net/ipv4/arp.c b/net/ipv4/arp.c
index c4dd13542802..6e747065c202 100644
--- a/net/ipv4/arp.c
+++ b/net/ipv4/arp.c
@@ -98,6 +98,7 @@
 #include <linux/net.h>
 #include <linux/rcupdate.h>
 #include <linux/jhash.h>
+#include <linux/slab.h>
 #ifdef CONFIG_SYSCTL
 #include <linux/sysctl.h>
 #endif
diff --git a/net/ipv4/cipso_ipv4.c b/net/ipv4/cipso_ipv4.c
index 1e029dc75455..c97cd9ff697e 100644
--- a/net/ipv4/cipso_ipv4.c
+++ b/net/ipv4/cipso_ipv4.c
@@ -44,6 +44,7 @@
 #include <linux/string.h>
 #include <linux/jhash.h>
 #include <linux/audit.h>
+#include <linux/slab.h>
 #include <net/ip.h>
 #include <net/icmp.h>
 #include <net/tcp.h>
diff --git a/net/ipv4/devinet.c b/net/ipv4/devinet.c
index 51ca946e3392..90e3d6379a42 100644
--- a/net/ipv4/devinet.c
+++ b/net/ipv4/devinet.c
@@ -50,6 +50,7 @@
 #include <linux/notifier.h>
 #include <linux/inetdevice.h>
 #include <linux/igmp.h>
+#include <linux/slab.h>
 #ifdef CONFIG_SYSCTL
 #include <linux/sysctl.h>
 #endif
@@ -1194,7 +1195,7 @@ static int inet_dump_ifaddr(struct sk_buff *skb, struct netlink_callback *cb)
 		hlist_for_each_entry_rcu(dev, node, head, index_hlist) {
 			if (idx < s_idx)
 				goto cont;
-			if (idx > s_idx)
+			if (h > s_h || idx > s_idx)
 				s_ip_idx = 0;
 			in_dev = __in_dev_get_rcu(dev);
 			if (!in_dev)
diff --git a/net/ipv4/fib_frontend.c b/net/ipv4/fib_frontend.c
index 9b3e28ed5240..4f0ed458c883 100644
--- a/net/ipv4/fib_frontend.c
+++ b/net/ipv4/fib_frontend.c
@@ -34,6 +34,7 @@
 #include <linux/skbuff.h>
 #include <linux/init.h>
 #include <linux/list.h>
+#include <linux/slab.h>
 
 #include <net/ip.h>
 #include <net/protocol.h>
diff --git a/net/ipv4/fib_hash.c b/net/ipv4/fib_hash.c
index 14972017b9c2..4ed7e0dea1bc 100644
--- a/net/ipv4/fib_hash.c
+++ b/net/ipv4/fib_hash.c
@@ -32,6 +32,7 @@
 #include <linux/skbuff.h>
 #include <linux/netlink.h>
 #include <linux/init.h>
+#include <linux/slab.h>
 
 #include <net/net_namespace.h>
 #include <net/ip.h>
diff --git a/net/ipv4/fib_semantics.c b/net/ipv4/fib_semantics.c
index 1af0ea0fb6a2..20f09c5b31e8 100644
--- a/net/ipv4/fib_semantics.c
+++ b/net/ipv4/fib_semantics.c
@@ -32,6 +32,7 @@
 #include <linux/proc_fs.h>
 #include <linux/skbuff.h>
 #include <linux/init.h>
+#include <linux/slab.h>
 
 #include <net/arp.h>
 #include <net/ip.h>
diff --git a/net/ipv4/fib_trie.c b/net/ipv4/fib_trie.c
index af5d89792860..c98f115fb0fd 100644
--- a/net/ipv4/fib_trie.c
+++ b/net/ipv4/fib_trie.c
@@ -71,6 +71,7 @@
 #include <linux/netlink.h>
 #include <linux/init.h>
 #include <linux/list.h>
+#include <linux/slab.h>
 #include <net/net_namespace.h>
 #include <net/ip.h>
 #include <net/protocol.h>
@@ -208,7 +209,9 @@ static inline struct node *tnode_get_child_rcu(struct tnode *tn, unsigned int i)
 {
 	struct node *ret = tnode_get_child(tn, i);
 
-	return rcu_dereference(ret);
+	return rcu_dereference_check(ret,
+				     rcu_read_lock_held() ||
+				     lockdep_rtnl_is_held());
 }
 
 static inline int tnode_child_length(const struct tnode *tn)
@@ -961,7 +964,9 @@ fib_find_node(struct trie *t, u32 key)
 	struct node *n;
 
 	pos = 0;
-	n = rcu_dereference(t->trie);
+	n = rcu_dereference_check(t->trie,
+				  rcu_read_lock_held() ||
+				  lockdep_rtnl_is_held());
 
 	while (n != NULL &&  NODE_TYPE(n) == T_TNODE) {
 		tn = (struct tnode *) n;
diff --git a/net/ipv4/icmp.c b/net/ipv4/icmp.c
index 4b4c2bcd15db..ac4dec132735 100644
--- a/net/ipv4/icmp.c
+++ b/net/ipv4/icmp.c
@@ -74,6 +74,7 @@
 #include <linux/netdevice.h>
 #include <linux/string.h>
 #include <linux/netfilter_ipv4.h>
+#include <linux/slab.h>
 #include <net/snmp.h>
 #include <net/ip.h>
 #include <net/route.h>
diff --git a/net/ipv4/igmp.c b/net/ipv4/igmp.c
index 63bf298ca109..15d3eeda92f5 100644
--- a/net/ipv4/igmp.c
+++ b/net/ipv4/igmp.c
@@ -71,6 +71,7 @@
  */
 
 #include <linux/module.h>
+#include <linux/slab.h>
 #include <asm/uaccess.h>
 #include <asm/system.h>
 #include <linux/types.h>
diff --git a/net/ipv4/inet_diag.c b/net/ipv4/inet_diag.c
index 1aaa8110d84b..e5fa2ddce320 100644
--- a/net/ipv4/inet_diag.c
+++ b/net/ipv4/inet_diag.c
@@ -14,6 +14,7 @@
 #include <linux/types.h>
 #include <linux/fcntl.h>
 #include <linux/random.h>
+#include <linux/slab.h>
 #include <linux/cache.h>
 #include <linux/init.h>
 #include <linux/time.h>
diff --git a/net/ipv4/inet_fragment.c b/net/ipv4/inet_fragment.c
index eaf3e2c8646a..a2ca6aed763b 100644
--- a/net/ipv4/inet_fragment.c
+++ b/net/ipv4/inet_fragment.c
@@ -19,6 +19,7 @@
 #include <linux/random.h>
 #include <linux/skbuff.h>
 #include <linux/rtnetlink.h>
+#include <linux/slab.h>
 
 #include <net/inet_frag.h>
 
diff --git a/net/ipv4/inet_timewait_sock.c b/net/ipv4/inet_timewait_sock.c
index cc94cc2d8b2d..c5af909cf701 100644
--- a/net/ipv4/inet_timewait_sock.c
+++ b/net/ipv4/inet_timewait_sock.c
@@ -10,6 +10,7 @@
 
 #include <linux/kernel.h>
 #include <linux/kmemcheck.h>
+#include <linux/slab.h>
 #include <net/inet_hashtables.h>
 #include <net/inet_timewait_sock.h>
 #include <net/ip.h>
diff --git a/net/ipv4/ip_forward.c b/net/ipv4/ip_forward.c
index a2991bc8e32e..af10942b326c 100644
--- a/net/ipv4/ip_forward.c
+++ b/net/ipv4/ip_forward.c
@@ -25,6 +25,7 @@
 #include <linux/ip.h>
 #include <linux/icmp.h>
 #include <linux/netdevice.h>
+#include <linux/slab.h>
 #include <net/sock.h>
 #include <net/ip.h>
 #include <net/tcp.h>
diff --git a/net/ipv4/ip_fragment.c b/net/ipv4/ip_fragment.c
index b59430bc041c..75347ea70ea0 100644
--- a/net/ipv4/ip_fragment.c
+++ b/net/ipv4/ip_fragment.c
@@ -32,6 +32,7 @@
 #include <linux/netdevice.h>
 #include <linux/jhash.h>
 #include <linux/random.h>
+#include <linux/slab.h>
 #include <net/route.h>
 #include <net/dst.h>
 #include <net/sock.h>
diff --git a/net/ipv4/ip_gre.c b/net/ipv4/ip_gre.c
index c0c5274d0271..fe381d12ecdd 100644
--- a/net/ipv4/ip_gre.c
+++ b/net/ipv4/ip_gre.c
@@ -14,6 +14,7 @@
 #include <linux/module.h>
 #include <linux/types.h>
 #include <linux/kernel.h>
+#include <linux/slab.h>
 #include <asm/uaccess.h>
 #include <linux/skbuff.h>
 #include <linux/netdevice.h>
@@ -810,11 +811,13 @@ static netdev_tx_t ipgre_tunnel_xmit(struct sk_buff *skb, struct net_device *dev
 			tunnel->err_count = 0;
 	}
 
-	max_headroom = LL_RESERVED_SPACE(tdev) + gre_hlen;
+	max_headroom = LL_RESERVED_SPACE(tdev) + gre_hlen + rt->u.dst.header_len;
 
 	if (skb_headroom(skb) < max_headroom || skb_shared(skb)||
 	    (skb_cloned(skb) && !skb_clone_writable(skb, 0))) {
 		struct sk_buff *new_skb = skb_realloc_headroom(skb, max_headroom);
+		if (max_headroom > dev->needed_headroom)
+			dev->needed_headroom = max_headroom;
 		if (!new_skb) {
 			ip_rt_put(rt);
 			txq->tx_dropped++;
@@ -1144,12 +1147,9 @@ static int ipgre_header(struct sk_buff *skb, struct net_device *dev,
 
 	if (saddr)
 		memcpy(&iph->saddr, saddr, 4);
-
-	if (daddr) {
+	if (daddr)
 		memcpy(&iph->daddr, daddr, 4);
-		return t->hlen;
-	}
-	if (iph->daddr && !ipv4_is_multicast(iph->daddr))
+	if (iph->daddr)
 		return t->hlen;
 
 	return -t->hlen;
diff --git a/net/ipv4/ip_input.c b/net/ipv4/ip_input.c
index c29de9879fda..f8ab7a380d4a 100644
--- a/net/ipv4/ip_input.c
+++ b/net/ipv4/ip_input.c
@@ -119,6 +119,7 @@
 #include <linux/kernel.h>
 #include <linux/string.h>
 #include <linux/errno.h>
+#include <linux/slab.h>
 
 #include <linux/net.h>
 #include <linux/socket.h>
diff --git a/net/ipv4/ip_options.c b/net/ipv4/ip_options.c
index 94bf105ef3c9..4c09a31fd140 100644
--- a/net/ipv4/ip_options.c
+++ b/net/ipv4/ip_options.c
@@ -11,6 +11,7 @@
 
 #include <linux/capability.h>
 #include <linux/module.h>
+#include <linux/slab.h>
 #include <linux/types.h>
 #include <asm/uaccess.h>
 #include <linux/skbuff.h>
diff --git a/net/ipv4/ip_output.c b/net/ipv4/ip_output.c
index 3451799e3dbf..d1bcc9f21d4f 100644
--- a/net/ipv4/ip_output.c
+++ b/net/ipv4/ip_output.c
@@ -51,6 +51,7 @@
 #include <linux/string.h>
 #include <linux/errno.h>
 #include <linux/highmem.h>
+#include <linux/slab.h>
 
 #include <linux/socket.h>
 #include <linux/sockios.h>
@@ -119,7 +120,7 @@ static int ip_dev_loopback_xmit(struct sk_buff *newskb)
 	newskb->pkt_type = PACKET_LOOPBACK;
 	newskb->ip_summed = CHECKSUM_UNNECESSARY;
 	WARN_ON(!skb_dst(newskb));
-	netif_rx(newskb);
+	netif_rx_ni(newskb);
 	return 0;
 }
 
diff --git a/net/ipv4/ip_sockglue.c b/net/ipv4/ip_sockglue.c
index 644dc43a55de..1e64dabbd232 100644
--- a/net/ipv4/ip_sockglue.c
+++ b/net/ipv4/ip_sockglue.c
@@ -23,6 +23,7 @@
 #include <linux/icmp.h>
 #include <linux/inetdevice.h>
 #include <linux/netdevice.h>
+#include <linux/slab.h>
 #include <net/sock.h>
 #include <net/ip.h>
 #include <net/icmp.h>
diff --git a/net/ipv4/ipconfig.c b/net/ipv4/ipconfig.c
index 10a6a604bf32..067ce9e043dc 100644
--- a/net/ipv4/ipconfig.c
+++ b/net/ipv4/ipconfig.c
@@ -53,6 +53,7 @@
 #include <linux/root_dev.h>
 #include <linux/delay.h>
 #include <linux/nfs_fs.h>
+#include <linux/slab.h>
 #include <net/net_namespace.h>
 #include <net/arp.h>
 #include <net/ip.h>
@@ -187,6 +188,16 @@ struct ic_device {
 static struct ic_device *ic_first_dev __initdata = NULL;/* List of open device */
 static struct net_device *ic_dev __initdata = NULL;	/* Selected device */
 
+static bool __init ic_device_match(struct net_device *dev)
+{
+	if (user_dev_name[0] ? !strcmp(dev->name, user_dev_name) :
+	    (!(dev->flags & IFF_LOOPBACK) &&
+	     (dev->flags & (IFF_POINTOPOINT|IFF_BROADCAST)) &&
+	     strncmp(dev->name, "dummy", 5)))
+		return true;
+	return false;
+}
+
 static int __init ic_open_devs(void)
 {
 	struct ic_device *d, **last;
@@ -207,10 +218,7 @@ static int __init ic_open_devs(void)
 	for_each_netdev(&init_net, dev) {
 		if (dev->flags & IFF_LOOPBACK)
 			continue;
-		if (user_dev_name[0] ? !strcmp(dev->name, user_dev_name) :
-		    (!(dev->flags & IFF_LOOPBACK) &&
-		     (dev->flags & (IFF_POINTOPOINT|IFF_BROADCAST)) &&
-		     strncmp(dev->name, "dummy", 5))) {
+		if (ic_device_match(dev)) {
 			int able = 0;
 			if (dev->mtu >= 364)
 				able |= IC_BOOTP;
@@ -228,7 +236,7 @@ static int __init ic_open_devs(void)
 			}
 			if (!(d = kmalloc(sizeof(struct ic_device), GFP_KERNEL))) {
 				rtnl_unlock();
-				return -1;
+				return -ENOMEM;
 			}
 			d->dev = dev;
 			*last = d;
@@ -253,7 +261,7 @@ static int __init ic_open_devs(void)
 			printk(KERN_ERR "IP-Config: Device `%s' not found.\n", user_dev_name);
 		else
 			printk(KERN_ERR "IP-Config: No network devices available.\n");
-		return -1;
+		return -ENODEV;
 	}
 	return 0;
 }
@@ -1303,6 +1311,32 @@ __be32 __init root_nfs_parse_addr(char *name)
 	return addr;
 }
 
+#define DEVICE_WAIT_MAX		12 /* 12 seconds */
+
+static int __init wait_for_devices(void)
+{
+	int i;
+
+	msleep(CONF_PRE_OPEN);
+	for (i = 0; i < DEVICE_WAIT_MAX; i++) {
+		struct net_device *dev;
+		int found = 0;
+
+		rtnl_lock();
+		for_each_netdev(&init_net, dev) {
+			if (ic_device_match(dev)) {
+				found = 1;
+				break;
+			}
+		}
+		rtnl_unlock();
+		if (found)
+			return 0;
+		ssleep(1);
+	}
+	return -ENODEV;
+}
+
 /*
  *	IP Autoconfig dispatcher.
  */
@@ -1313,6 +1347,7 @@ static int __init ip_auto_config(void)
 #ifdef IPCONFIG_DYNAMIC
 	int retries = CONF_OPEN_RETRIES;
 #endif
+	int err;
 
 #ifdef CONFIG_PROC_FS
 	proc_net_fops_create(&init_net, "pnp", S_IRUGO, &pnp_seq_fops);
@@ -1325,12 +1360,15 @@ static int __init ip_auto_config(void)
 #ifdef IPCONFIG_DYNAMIC
  try_try_again:
 #endif
-	/* Give hardware a chance to settle */
-	msleep(CONF_PRE_OPEN);
+	/* Wait for devices to appear */
+	err = wait_for_devices();
+	if (err)
+		return err;
 
 	/* Setup all network devices */
-	if (ic_open_devs() < 0)
-		return -1;
+	err = ic_open_devs();
+	if (err)
+		return err;
 
 	/* Give drivers a chance to settle */
 	ssleep(CONF_POST_OPEN);
diff --git a/net/ipv4/ipip.c b/net/ipv4/ipip.c
index 2f302d3ac9a3..0b27b14dcc9d 100644
--- a/net/ipv4/ipip.c
+++ b/net/ipv4/ipip.c
@@ -95,6 +95,7 @@
 #include <linux/module.h>
 #include <linux/types.h>
 #include <linux/kernel.h>
+#include <linux/slab.h>
 #include <asm/uaccess.h>
 #include <linux/skbuff.h>
 #include <linux/netdevice.h>
diff --git a/net/ipv4/ipmr.c b/net/ipv4/ipmr.c
index b1373abe2489..30ac54b16d40 100644
--- a/net/ipv4/ipmr.c
+++ b/net/ipv4/ipmr.c
@@ -47,6 +47,7 @@
 #include <linux/mroute.h>
 #include <linux/init.h>
 #include <linux/if_ether.h>
+#include <linux/slab.h>
 #include <net/net_namespace.h>
 #include <net/ip.h>
 #include <net/protocol.h>
@@ -802,6 +803,9 @@ static int ipmr_mfc_add(struct net *net, struct mfcctl *mfc, int mrtsock)
 	int line;
 	struct mfc_cache *uc, *c, **cp;
 
+	if (mfc->mfcc_parent >= MAXVIFS)
+		return -ENFILE;
+
 	line = MFC_HASH(mfc->mfcc_mcastgrp.s_addr, mfc->mfcc_origin.s_addr);
 
 	for (cp = &net->ipv4.mfc_cache_array[line];
@@ -1613,17 +1617,20 @@ ipmr_fill_mroute(struct sk_buff *skb, struct mfc_cache *c, struct rtmsg *rtm)
 	int ct;
 	struct rtnexthop *nhp;
 	struct net *net = mfc_net(c);
-	struct net_device *dev = net->ipv4.vif_table[c->mfc_parent].dev;
 	u8 *b = skb_tail_pointer(skb);
 	struct rtattr *mp_head;
 
-	if (dev)
-		RTA_PUT(skb, RTA_IIF, 4, &dev->ifindex);
+	/* If cache is unresolved, don't try to parse IIF and OIF */
+	if (c->mfc_parent > MAXVIFS)
+		return -ENOENT;
+
+	if (VIF_EXISTS(net, c->mfc_parent))
+		RTA_PUT(skb, RTA_IIF, 4, &net->ipv4.vif_table[c->mfc_parent].dev->ifindex);
 
 	mp_head = (struct rtattr *)skb_put(skb, RTA_LENGTH(0));
 
 	for (ct = c->mfc_un.res.minvif; ct < c->mfc_un.res.maxvif; ct++) {
-		if (c->mfc_un.res.ttls[ct] < 255) {
+		if (VIF_EXISTS(net, ct) && c->mfc_un.res.ttls[ct] < 255) {
 			if (skb_tailroom(skb) < RTA_ALIGN(RTA_ALIGN(sizeof(*nhp)) + 4))
 				goto rtattr_failure;
 			nhp = (struct rtnexthop *)skb_put(skb, RTA_ALIGN(sizeof(*nhp)));
diff --git a/net/ipv4/netfilter.c b/net/ipv4/netfilter.c
index c14623fc4d5e..82fb43c5c59e 100644
--- a/net/ipv4/netfilter.c
+++ b/net/ipv4/netfilter.c
@@ -4,6 +4,7 @@
 #include <linux/netfilter_ipv4.h>
 #include <linux/ip.h>
 #include <linux/skbuff.h>
+#include <linux/gfp.h>
 #include <net/route.h>
 #include <net/xfrm.h>
 #include <net/ip.h>
diff --git a/net/ipv4/netfilter/arptable_filter.c b/net/ipv4/netfilter/arptable_filter.c
index bfe26f32b930..79ca5e70d497 100644
--- a/net/ipv4/netfilter/arptable_filter.c
+++ b/net/ipv4/netfilter/arptable_filter.c
@@ -8,6 +8,7 @@
 #include <linux/module.h>
 #include <linux/netfilter/x_tables.h>
 #include <linux/netfilter_arp/arp_tables.h>
+#include <linux/slab.h>
 
 MODULE_LICENSE("GPL");
 MODULE_AUTHOR("David S. Miller <davem@redhat.com>");
diff --git a/net/ipv4/netfilter/ip_queue.c b/net/ipv4/netfilter/ip_queue.c
index 2855f1f38cbc..e2787048aa0a 100644
--- a/net/ipv4/netfilter/ip_queue.c
+++ b/net/ipv4/netfilter/ip_queue.c
@@ -26,6 +26,7 @@
 #include <linux/security.h>
 #include <linux/net.h>
 #include <linux/mutex.h>
+#include <linux/slab.h>
 #include <net/net_namespace.h>
 #include <net/sock.h>
 #include <net/route.h>
diff --git a/net/ipv4/netfilter/ipt_CLUSTERIP.c b/net/ipv4/netfilter/ipt_CLUSTERIP.c
index 0886f96c736b..ab828400ed71 100644
--- a/net/ipv4/netfilter/ipt_CLUSTERIP.c
+++ b/net/ipv4/netfilter/ipt_CLUSTERIP.c
@@ -14,6 +14,7 @@
 #include <linux/jhash.h>
 #include <linux/bitops.h>
 #include <linux/skbuff.h>
+#include <linux/slab.h>
 #include <linux/ip.h>
 #include <linux/tcp.h>
 #include <linux/udp.h>
diff --git a/net/ipv4/netfilter/ipt_REJECT.c b/net/ipv4/netfilter/ipt_REJECT.c
index 5113b8f1a379..a0e8bcf04159 100644
--- a/net/ipv4/netfilter/ipt_REJECT.c
+++ b/net/ipv4/netfilter/ipt_REJECT.c
@@ -12,6 +12,7 @@
 
 #include <linux/module.h>
 #include <linux/skbuff.h>
+#include <linux/slab.h>
 #include <linux/ip.h>
 #include <linux/udp.h>
 #include <linux/icmp.h>
diff --git a/net/ipv4/netfilter/ipt_ULOG.c b/net/ipv4/netfilter/ipt_ULOG.c
index 09a5d3f7cc41..0dbe697f164f 100644
--- a/net/ipv4/netfilter/ipt_ULOG.c
+++ b/net/ipv4/netfilter/ipt_ULOG.c
@@ -33,6 +33,7 @@
 #include <linux/module.h>
 #include <linux/spinlock.h>
 #include <linux/socket.h>
+#include <linux/slab.h>
 #include <linux/skbuff.h>
 #include <linux/kernel.h>
 #include <linux/timer.h>
diff --git a/net/ipv4/netfilter/iptable_filter.c b/net/ipv4/netfilter/iptable_filter.c
index c8dc9800d620..55392466daa4 100644
--- a/net/ipv4/netfilter/iptable_filter.c
+++ b/net/ipv4/netfilter/iptable_filter.c
@@ -13,6 +13,7 @@
 #include <linux/module.h>
 #include <linux/moduleparam.h>
 #include <linux/netfilter_ipv4/ip_tables.h>
+#include <linux/slab.h>
 #include <net/ip.h>
 
 MODULE_LICENSE("GPL");
diff --git a/net/ipv4/netfilter/iptable_mangle.c b/net/ipv4/netfilter/iptable_mangle.c
index b9b83464cbf4..294a2a32f293 100644
--- a/net/ipv4/netfilter/iptable_mangle.c
+++ b/net/ipv4/netfilter/iptable_mangle.c
@@ -12,6 +12,7 @@
 #include <linux/netfilter_ipv4/ip_tables.h>
 #include <linux/netdevice.h>
 #include <linux/skbuff.h>
+#include <linux/slab.h>
 #include <net/sock.h>
 #include <net/route.h>
 #include <linux/ip.h>
diff --git a/net/ipv4/netfilter/iptable_raw.c b/net/ipv4/netfilter/iptable_raw.c
index 06fb9d11953c..07fb710cd722 100644
--- a/net/ipv4/netfilter/iptable_raw.c
+++ b/net/ipv4/netfilter/iptable_raw.c
@@ -5,6 +5,7 @@
  */
 #include <linux/module.h>
 #include <linux/netfilter_ipv4/ip_tables.h>
+#include <linux/slab.h>
 #include <net/ip.h>
 
 #define RAW_VALID_HOOKS ((1 << NF_INET_PRE_ROUTING) | (1 << NF_INET_LOCAL_OUT))
diff --git a/net/ipv4/netfilter/iptable_security.c b/net/ipv4/netfilter/iptable_security.c
index cce2f64e6f21..be45bdc4c602 100644
--- a/net/ipv4/netfilter/iptable_security.c
+++ b/net/ipv4/netfilter/iptable_security.c
@@ -17,6 +17,7 @@
  */
 #include <linux/module.h>
 #include <linux/netfilter_ipv4/ip_tables.h>
+#include <linux/slab.h>
 #include <net/ip.h>
 
 MODULE_LICENSE("GPL");
diff --git a/net/ipv4/netfilter/nf_nat_core.c b/net/ipv4/netfilter/nf_nat_core.c
index 4595281c2863..4f8bddb760c9 100644
--- a/net/ipv4/netfilter/nf_nat_core.c
+++ b/net/ipv4/netfilter/nf_nat_core.c
@@ -12,6 +12,7 @@
 #include <linux/types.h>
 #include <linux/timer.h>
 #include <linux/skbuff.h>
+#include <linux/gfp.h>
 #include <net/checksum.h>
 #include <net/icmp.h>
 #include <net/ip.h>
diff --git a/net/ipv4/netfilter/nf_nat_helper.c b/net/ipv4/netfilter/nf_nat_helper.c
index 4b6af4bb1f50..4a0c6b548eee 100644
--- a/net/ipv4/netfilter/nf_nat_helper.c
+++ b/net/ipv4/netfilter/nf_nat_helper.c
@@ -8,6 +8,7 @@
  * published by the Free Software Foundation.
  */
 #include <linux/module.h>
+#include <linux/gfp.h>
 #include <linux/kmod.h>
 #include <linux/types.h>
 #include <linux/timer.h>
diff --git a/net/ipv4/netfilter/nf_nat_rule.c b/net/ipv4/netfilter/nf_nat_rule.c
index ab74cc0535e2..26de2c1f7fab 100644
--- a/net/ipv4/netfilter/nf_nat_rule.c
+++ b/net/ipv4/netfilter/nf_nat_rule.c
@@ -15,6 +15,7 @@
 #include <linux/kmod.h>
 #include <linux/skbuff.h>
 #include <linux/proc_fs.h>
+#include <linux/slab.h>
 #include <net/checksum.h>
 #include <net/route.h>
 #include <linux/bitops.h>
diff --git a/net/ipv4/netfilter/nf_nat_snmp_basic.c b/net/ipv4/netfilter/nf_nat_snmp_basic.c
index 0b9c7ce3d6c5..4d85b6e55f29 100644
--- a/net/ipv4/netfilter/nf_nat_snmp_basic.c
+++ b/net/ipv4/netfilter/nf_nat_snmp_basic.c
@@ -43,6 +43,7 @@
 #include <linux/moduleparam.h>
 #include <linux/types.h>
 #include <linux/kernel.h>
+#include <linux/slab.h>
 #include <linux/in.h>
 #include <linux/ip.h>
 #include <linux/udp.h>
diff --git a/net/ipv4/netfilter/nf_nat_standalone.c b/net/ipv4/netfilter/nf_nat_standalone.c
index 5678e9562c15..c39c9cf6bee6 100644
--- a/net/ipv4/netfilter/nf_nat_standalone.c
+++ b/net/ipv4/netfilter/nf_nat_standalone.c
@@ -7,6 +7,7 @@
  */
 #include <linux/types.h>
 #include <linux/icmp.h>
+#include <linux/gfp.h>
 #include <linux/ip.h>
 #include <linux/netfilter.h>
 #include <linux/netfilter_ipv4.h>
diff --git a/net/ipv4/proc.c b/net/ipv4/proc.c
index 242ed2307370..4f1f337f4337 100644
--- a/net/ipv4/proc.c
+++ b/net/ipv4/proc.c
@@ -249,6 +249,8 @@ static const struct snmp_mib snmp4_net_list[] = {
 	SNMP_MIB_ITEM("TCPSackShifted", LINUX_MIB_SACKSHIFTED),
 	SNMP_MIB_ITEM("TCPSackMerged", LINUX_MIB_SACKMERGED),
 	SNMP_MIB_ITEM("TCPSackShiftFallback", LINUX_MIB_SACKSHIFTFALLBACK),
+	SNMP_MIB_ITEM("TCPBacklogDrop", LINUX_MIB_TCPBACKLOGDROP),
+	SNMP_MIB_ITEM("TCPMinTTLDrop", LINUX_MIB_TCPMINTTLDROP),
 	SNMP_MIB_SENTINEL
 };
 
diff --git a/net/ipv4/raw.c b/net/ipv4/raw.c
index ce154b47f1da..cc6f097fbd5f 100644
--- a/net/ipv4/raw.c
+++ b/net/ipv4/raw.c
@@ -60,7 +60,6 @@
 #include <net/net_namespace.h>
 #include <net/dst.h>
 #include <net/sock.h>
-#include <linux/gfp.h>
 #include <linux/ip.h>
 #include <linux/net.h>
 #include <net/ip.h>
diff --git a/net/ipv4/route.c b/net/ipv4/route.c
index b2ba5581d2ae..cb562fdd9b9a 100644
--- a/net/ipv4/route.c
+++ b/net/ipv4/route.c
@@ -90,6 +90,7 @@
 #include <linux/jhash.h>
 #include <linux/rcupdate.h>
 #include <linux/times.h>
+#include <linux/slab.h>
 #include <net/dst.h>
 #include <net/net_namespace.h>
 #include <net/protocol.h>
@@ -146,7 +147,6 @@ static struct dst_entry *ipv4_negative_advice(struct dst_entry *dst);
 static void		 ipv4_link_failure(struct sk_buff *skb);
 static void		 ip_rt_update_pmtu(struct dst_entry *dst, u32 mtu);
 static int rt_garbage_collect(struct dst_ops *ops);
-static void rt_emergency_hash_rebuild(struct net *net);
 
 
 static struct dst_ops ipv4_dst_ops = {
@@ -780,11 +780,30 @@ static void rt_do_flush(int process_context)
 #define FRACT_BITS 3
 #define ONE (1UL << FRACT_BITS)
 
+/*
+ * Given a hash chain and an item in this hash chain,
+ * find if a previous entry has the same hash_inputs
+ * (but differs on tos, mark or oif)
+ * Returns 0 if an alias is found.
+ * Returns ONE if rth has no alias before itself.
+ */
+static int has_noalias(const struct rtable *head, const struct rtable *rth)
+{
+	const struct rtable *aux = head;
+
+	while (aux != rth) {
+		if (compare_hash_inputs(&aux->fl, &rth->fl))
+			return 0;
+		aux = aux->u.dst.rt_next;
+	}
+	return ONE;
+}
+
 static void rt_check_expire(void)
 {
 	static unsigned int rover;
 	unsigned int i = rover, goal;
-	struct rtable *rth, *aux, **rthp;
+	struct rtable *rth, **rthp;
 	unsigned long samples = 0;
 	unsigned long sum = 0, sum2 = 0;
 	unsigned long delta;
@@ -835,15 +854,7 @@ nofree:
 					 * attributes don't unfairly skew
 					 * the length computation
 					 */
-					for (aux = rt_hash_table[i].chain;;) {
-						if (aux == rth) {
-							length += ONE;
-							break;
-						}
-						if (compare_hash_inputs(&aux->fl, &rth->fl))
-							break;
-						aux = aux->u.dst.rt_next;
-					}
+					length += has_noalias(rt_hash_table[i].chain, rth);
 					continue;
 				}
 			} else if (!rt_may_expire(rth, tmo, ip_rt_gc_timeout))
@@ -922,10 +933,8 @@ static void rt_secret_rebuild_oneshot(struct net *net)
 {
 	del_timer_sync(&net->ipv4.rt_secret_timer);
 	rt_cache_invalidate(net);
-	if (ip_rt_secret_interval) {
-		net->ipv4.rt_secret_timer.expires += ip_rt_secret_interval;
-		add_timer(&net->ipv4.rt_secret_timer);
-	}
+	if (ip_rt_secret_interval)
+		mod_timer(&net->ipv4.rt_secret_timer, jiffies + ip_rt_secret_interval);
 }
 
 static void rt_emergency_hash_rebuild(struct net *net)
@@ -1073,8 +1082,23 @@ work_done:
 out:	return 0;
 }
 
+/*
+ * Returns number of entries in a hash chain that have different hash_inputs
+ */
+static int slow_chain_length(const struct rtable *head)
+{
+	int length = 0;
+	const struct rtable *rth = head;
+
+	while (rth) {
+		length += has_noalias(head, rth);
+		rth = rth->u.dst.rt_next;
+	}
+	return length >> FRACT_BITS;
+}
+
 static int rt_intern_hash(unsigned hash, struct rtable *rt,
-			  struct rtable **rp, struct sk_buff *skb)
+			  struct rtable **rp, struct sk_buff *skb, int ifindex)
 {
 	struct rtable	*rth, **rthp;
 	unsigned long	now;
@@ -1185,14 +1209,20 @@ restart:
 			rt_free(cand);
 		}
 	} else {
-		if (chain_length > rt_chain_length_max) {
+		if (chain_length > rt_chain_length_max &&
+		    slow_chain_length(rt_hash_table[hash].chain) > rt_chain_length_max) {
 			struct net *net = dev_net(rt->u.dst.dev);
 			int num = ++net->ipv4.current_rt_cache_rebuild_count;
-			if (!rt_caching(dev_net(rt->u.dst.dev))) {
+			if (!rt_caching(net)) {
 				printk(KERN_WARNING "%s: %d rebuilds is over limit, route caching disabled\n",
 					rt->u.dst.dev->name, num);
 			}
-			rt_emergency_hash_rebuild(dev_net(rt->u.dst.dev));
+			rt_emergency_hash_rebuild(net);
+			spin_unlock_bh(rt_hash_lock_addr(hash));
+
+			hash = rt_hash(rt->fl.fl4_dst, rt->fl.fl4_src,
+					ifindex, rt_genid(net));
+			goto restart;
 		}
 	}
 
@@ -1417,7 +1447,7 @@ void ip_rt_redirect(__be32 old_gw, __be32 daddr, __be32 new_gw,
 					dev_hold(rt->u.dst.dev);
 				if (rt->idev)
 					in_dev_hold(rt->idev);
-				rt->u.dst.obsolete	= 0;
+				rt->u.dst.obsolete	= -1;
 				rt->u.dst.lastuse	= jiffies;
 				rt->u.dst.path		= &rt->u.dst;
 				rt->u.dst.neighbour	= NULL;
@@ -1453,7 +1483,7 @@ void ip_rt_redirect(__be32 old_gw, __be32 daddr, __be32 new_gw,
 							&netevent);
 
 				rt_del(hash, rth);
-				if (!rt_intern_hash(hash, rt, &rt, NULL))
+				if (!rt_intern_hash(hash, rt, &rt, NULL, rt->fl.oif))
 					ip_rt_put(rt);
 				goto do_next;
 			}
@@ -1482,11 +1512,12 @@ static struct dst_entry *ipv4_negative_advice(struct dst_entry *dst)
 	struct dst_entry *ret = dst;
 
 	if (rt) {
-		if (dst->obsolete) {
+		if (dst->obsolete > 0) {
 			ip_rt_put(rt);
 			ret = NULL;
 		} else if ((rt->rt_flags & RTCF_REDIRECTED) ||
-			   rt->u.dst.expires) {
+			   (rt->u.dst.expires &&
+			    time_after_eq(jiffies, rt->u.dst.expires))) {
 			unsigned hash = rt_hash(rt->fl.fl4_dst, rt->fl.fl4_src,
 						rt->fl.oif,
 						rt_genid(dev_net(dst->dev)));
@@ -1702,7 +1733,9 @@ static void ip_rt_update_pmtu(struct dst_entry *dst, u32 mtu)
 
 static struct dst_entry *ipv4_dst_check(struct dst_entry *dst, u32 cookie)
 {
-	return NULL;
+	if (rt_is_expired((struct rtable *)dst))
+		return NULL;
+	return dst;
 }
 
 static void ipv4_dst_destroy(struct dst_entry *dst)
@@ -1864,7 +1897,8 @@ static int ip_route_input_mc(struct sk_buff *skb, __be32 daddr, __be32 saddr,
 	if (!rth)
 		goto e_nobufs;
 
-	rth->u.dst.output= ip_rt_bug;
+	rth->u.dst.output = ip_rt_bug;
+	rth->u.dst.obsolete = -1;
 
 	atomic_set(&rth->u.dst.__refcnt, 1);
 	rth->u.dst.flags= DST_HOST;
@@ -1903,7 +1937,7 @@ static int ip_route_input_mc(struct sk_buff *skb, __be32 daddr, __be32 saddr,
 
 	in_dev_put(in_dev);
 	hash = rt_hash(daddr, saddr, dev->ifindex, rt_genid(dev_net(dev)));
-	return rt_intern_hash(hash, rth, NULL, skb);
+	return rt_intern_hash(hash, rth, NULL, skb, dev->ifindex);
 
 e_nobufs:
 	in_dev_put(in_dev);
@@ -2030,6 +2064,7 @@ static int __mkroute_input(struct sk_buff *skb,
 	rth->fl.oif 	= 0;
 	rth->rt_spec_dst= spec_dst;
 
+	rth->u.dst.obsolete = -1;
 	rth->u.dst.input = ip_forward;
 	rth->u.dst.output = ip_output;
 	rth->rt_genid = rt_genid(dev_net(rth->u.dst.dev));
@@ -2069,7 +2104,7 @@ static int ip_mkroute_input(struct sk_buff *skb,
 	/* put it into the cache */
 	hash = rt_hash(daddr, saddr, fl->iif,
 		       rt_genid(dev_net(rth->u.dst.dev)));
-	return rt_intern_hash(hash, rth, NULL, skb);
+	return rt_intern_hash(hash, rth, NULL, skb, fl->iif);
 }
 
 /*
@@ -2194,6 +2229,7 @@ local_input:
 		goto e_nobufs;
 
 	rth->u.dst.output= ip_rt_bug;
+	rth->u.dst.obsolete = -1;
 	rth->rt_genid = rt_genid(net);
 
 	atomic_set(&rth->u.dst.__refcnt, 1);
@@ -2225,7 +2261,7 @@ local_input:
 	}
 	rth->rt_type	= res.type;
 	hash = rt_hash(daddr, saddr, fl.iif, rt_genid(net));
-	err = rt_intern_hash(hash, rth, NULL, skb);
+	err = rt_intern_hash(hash, rth, NULL, skb, fl.iif);
 	goto done;
 
 no_route:
@@ -2420,6 +2456,7 @@ static int __mkroute_output(struct rtable **result,
 	rth->rt_spec_dst= fl->fl4_src;
 
 	rth->u.dst.output=ip_output;
+	rth->u.dst.obsolete = -1;
 	rth->rt_genid = rt_genid(dev_net(dev_out));
 
 	RT_CACHE_STAT_INC(out_slow_tot);
@@ -2471,7 +2508,7 @@ static int ip_mkroute_output(struct rtable **rp,
 	if (err == 0) {
 		hash = rt_hash(oldflp->fl4_dst, oldflp->fl4_src, oldflp->oif,
 			       rt_genid(dev_net(dev_out)));
-		err = rt_intern_hash(hash, rth, rp, NULL);
+		err = rt_intern_hash(hash, rth, rp, NULL, oldflp->oif);
 	}
 
 	return err;
@@ -3077,22 +3114,20 @@ static void rt_secret_reschedule(int old)
 	rtnl_lock();
 	for_each_net(net) {
 		int deleted = del_timer_sync(&net->ipv4.rt_secret_timer);
+		long time;
 
 		if (!new)
 			continue;
 
 		if (deleted) {
-			long time = net->ipv4.rt_secret_timer.expires - jiffies;
+			time = net->ipv4.rt_secret_timer.expires - jiffies;
 
 			if (time <= 0 || (time += diff) <= 0)
 				time = 0;
-
-			net->ipv4.rt_secret_timer.expires = time;
 		} else
-			net->ipv4.rt_secret_timer.expires = new;
+			time = new;
 
-		net->ipv4.rt_secret_timer.expires += jiffies;
-		add_timer(&net->ipv4.rt_secret_timer);
+		mod_timer(&net->ipv4.rt_secret_timer, jiffies + time);
 	}
 	rtnl_unlock();
 }
diff --git a/net/ipv4/sysctl_net_ipv4.c b/net/ipv4/sysctl_net_ipv4.c
index c1bc074f61b7..1cd5c15174b8 100644
--- a/net/ipv4/sysctl_net_ipv4.c
+++ b/net/ipv4/sysctl_net_ipv4.c
@@ -12,6 +12,7 @@
 #include <linux/inetdevice.h>
 #include <linux/seqlock.h>
 #include <linux/init.h>
+#include <linux/slab.h>
 #include <net/snmp.h>
 #include <net/icmp.h>
 #include <net/ip.h>
diff --git a/net/ipv4/tcp.c b/net/ipv4/tcp.c
index 5901010fad55..0f8caf64caa3 100644
--- a/net/ipv4/tcp.c
+++ b/net/ipv4/tcp.c
@@ -265,6 +265,7 @@
 #include <linux/err.h>
 #include <linux/crypto.h>
 #include <linux/time.h>
+#include <linux/slab.h>
 
 #include <net/icmp.h>
 #include <net/tcp.h>
@@ -429,7 +430,7 @@ unsigned int tcp_poll(struct file *file, struct socket *sock, poll_table *wait)
 		if (tp->urg_seq == tp->copied_seq &&
 		    !sock_flag(sk, SOCK_URGINLINE) &&
 		    tp->urg_data)
-			target--;
+			target++;
 
 		/* Potential race condition. If read of tp below will
 		 * escape above sk->sk_state, we can be illegally awaken
@@ -1254,6 +1255,39 @@ static void tcp_prequeue_process(struct sock *sk)
 	tp->ucopy.memory = 0;
 }
 
+#ifdef CONFIG_NET_DMA
+static void tcp_service_net_dma(struct sock *sk, bool wait)
+{
+	dma_cookie_t done, used;
+	dma_cookie_t last_issued;
+	struct tcp_sock *tp = tcp_sk(sk);
+
+	if (!tp->ucopy.dma_chan)
+		return;
+
+	last_issued = tp->ucopy.dma_cookie;
+	dma_async_memcpy_issue_pending(tp->ucopy.dma_chan);
+
+	do {
+		if (dma_async_memcpy_complete(tp->ucopy.dma_chan,
+					      last_issued, &done,
+					      &used) == DMA_SUCCESS) {
+			/* Safe to free early-copied skbs now */
+			__skb_queue_purge(&sk->sk_async_wait_queue);
+			break;
+		} else {
+			struct sk_buff *skb;
+			while ((skb = skb_peek(&sk->sk_async_wait_queue)) &&
+			       (dma_async_is_complete(skb->dma_cookie, done,
+						      used) == DMA_SUCCESS)) {
+				__skb_dequeue(&sk->sk_async_wait_queue);
+				kfree_skb(skb);
+			}
+		}
+	} while (wait);
+}
+#endif
+
 static inline struct sk_buff *tcp_recv_skb(struct sock *sk, u32 seq, u32 *off)
 {
 	struct sk_buff *skb;
@@ -1335,6 +1369,7 @@ int tcp_read_sock(struct sock *sk, read_descriptor_t *desc,
 		sk_eat_skb(sk, skb, 0);
 		if (!desc->count)
 			break;
+		tp->copied_seq = seq;
 	}
 	tp->copied_seq = seq;
 
@@ -1546,6 +1581,10 @@ int tcp_recvmsg(struct kiocb *iocb, struct sock *sk, struct msghdr *msg,
 			/* __ Set realtime policy in scheduler __ */
 		}
 
+#ifdef CONFIG_NET_DMA
+		if (tp->ucopy.dma_chan)
+			dma_async_memcpy_issue_pending(tp->ucopy.dma_chan);
+#endif
 		if (copied >= target) {
 			/* Do not sleep, just process backlog. */
 			release_sock(sk);
@@ -1554,6 +1593,7 @@ int tcp_recvmsg(struct kiocb *iocb, struct sock *sk, struct msghdr *msg,
 			sk_wait_data(sk, &timeo);
 
 #ifdef CONFIG_NET_DMA
+		tcp_service_net_dma(sk, false);  /* Don't block */
 		tp->ucopy.wakeup = 0;
 #endif
 
@@ -1633,6 +1673,9 @@ do_prequeue:
 						copied = -EFAULT;
 					break;
 				}
+
+				dma_async_memcpy_issue_pending(tp->ucopy.dma_chan);
+
 				if ((offset + used) == skb->len)
 					copied_early = 1;
 
@@ -1702,27 +1745,9 @@ skip_copy:
 	}
 
 #ifdef CONFIG_NET_DMA
-	if (tp->ucopy.dma_chan) {
-		dma_cookie_t done, used;
-
-		dma_async_memcpy_issue_pending(tp->ucopy.dma_chan);
-
-		while (dma_async_memcpy_complete(tp->ucopy.dma_chan,
-						 tp->ucopy.dma_cookie, &done,
-						 &used) == DMA_IN_PROGRESS) {
-			/* do partial cleanup of sk_async_wait_queue */
-			while ((skb = skb_peek(&sk->sk_async_wait_queue)) &&
-			       (dma_async_is_complete(skb->dma_cookie, done,
-						      used) == DMA_SUCCESS)) {
-				__skb_dequeue(&sk->sk_async_wait_queue);
-				kfree_skb(skb);
-			}
-		}
+	tcp_service_net_dma(sk, true);  /* Wait for queue to drain */
+	tp->ucopy.dma_chan = NULL;
 
-		/* Safe to free early-copied skbs now */
-		__skb_queue_purge(&sk->sk_async_wait_queue);
-		tp->ucopy.dma_chan = NULL;
-	}
 	if (tp->ucopy.pinned_list) {
 		dma_unpin_iovec_pages(tp->ucopy.pinned_list);
 		tp->ucopy.pinned_list = NULL;
diff --git a/net/ipv4/tcp_cong.c b/net/ipv4/tcp_cong.c
index 6428b342b164..0ec9bd0ae94f 100644
--- a/net/ipv4/tcp_cong.c
+++ b/net/ipv4/tcp_cong.c
@@ -10,6 +10,7 @@
 #include <linux/mm.h>
 #include <linux/types.h>
 #include <linux/list.h>
+#include <linux/gfp.h>
 #include <net/tcp.h>
 
 int sysctl_tcp_max_ssthresh = 0;
diff --git a/net/ipv4/tcp_input.c b/net/ipv4/tcp_input.c
index 788851ca8c5d..f240f57b2199 100644
--- a/net/ipv4/tcp_input.c
+++ b/net/ipv4/tcp_input.c
@@ -62,6 +62,7 @@
  */
 
 #include <linux/mm.h>
+#include <linux/slab.h>
 #include <linux/module.h>
 #include <linux/sysctl.h>
 #include <linux/kernel.h>
@@ -2511,6 +2512,9 @@ static void tcp_mark_head_lost(struct sock *sk, int packets)
 	int err;
 	unsigned int mss;
 
+	if (packets == 0)
+		return;
+
 	WARN_ON(packets > tp->packets_out);
 	if (tp->lost_skb_hint) {
 		skb = tp->lost_skb_hint;
diff --git a/net/ipv4/tcp_ipv4.c b/net/ipv4/tcp_ipv4.c
index c3588b4fd979..3c23e70885f4 100644
--- a/net/ipv4/tcp_ipv4.c
+++ b/net/ipv4/tcp_ipv4.c
@@ -60,6 +60,7 @@
 #include <linux/jhash.h>
 #include <linux/init.h>
 #include <linux/times.h>
+#include <linux/slab.h>
 
 #include <net/net_namespace.h>
 #include <net/icmp.h>
@@ -370,6 +371,11 @@ void tcp_v4_err(struct sk_buff *icmp_skb, u32 info)
 	if (sk->sk_state == TCP_CLOSE)
 		goto out;
 
+	if (unlikely(iph->ttl < inet_sk(sk)->min_ttl)) {
+		NET_INC_STATS_BH(net, LINUX_MIB_TCPMINTTLDROP);
+		goto out;
+	}
+
 	icsk = inet_csk(sk);
 	tp = tcp_sk(sk);
 	seq = ntohl(th->seq);
@@ -1651,13 +1657,15 @@ int tcp_v4_rcv(struct sk_buff *skb)
 	if (!sk)
 		goto no_tcp_socket;
 
-	if (iph->ttl < inet_sk(sk)->min_ttl)
-		goto discard_and_relse;
-
 process:
 	if (sk->sk_state == TCP_TIME_WAIT)
 		goto do_time_wait;
 
+	if (unlikely(iph->ttl < inet_sk(sk)->min_ttl)) {
+		NET_INC_STATS_BH(net, LINUX_MIB_TCPMINTTLDROP);
+		goto discard_and_relse;
+	}
+
 	if (!xfrm4_policy_check(sk, XFRM_POLICY_IN, skb))
 		goto discard_and_relse;
 	nf_reset(skb);
@@ -1682,8 +1690,11 @@ process:
 			if (!tcp_prequeue(sk, skb))
 				ret = tcp_v4_do_rcv(sk, skb);
 		}
-	} else
-		sk_add_backlog(sk, skb);
+	} else if (unlikely(sk_add_backlog(sk, skb))) {
+		bh_unlock_sock(sk);
+		NET_INC_STATS_BH(net, LINUX_MIB_TCPBACKLOGDROP);
+		goto discard_and_relse;
+	}
 	bh_unlock_sock(sk);
 
 	sock_put(sk);
diff --git a/net/ipv4/tcp_minisocks.c b/net/ipv4/tcp_minisocks.c
index f206ee5dda80..5fabff9ac6d6 100644
--- a/net/ipv4/tcp_minisocks.c
+++ b/net/ipv4/tcp_minisocks.c
@@ -20,6 +20,7 @@
 
 #include <linux/mm.h>
 #include <linux/module.h>
+#include <linux/slab.h>
 #include <linux/sysctl.h>
 #include <linux/workqueue.h>
 #include <net/tcp.h>
@@ -728,7 +729,7 @@ int tcp_child_process(struct sock *parent, struct sock *child,
 		 * in main socket hash table and lock on listening
 		 * socket does not protect us more.
 		 */
-		sk_add_backlog(child, skb);
+		__sk_add_backlog(child, skb);
 	}
 
 	bh_unlock_sock(child);
diff --git a/net/ipv4/tcp_output.c b/net/ipv4/tcp_output.c
index 4a1605d3f909..0dda86e72ad8 100644
--- a/net/ipv4/tcp_output.c
+++ b/net/ipv4/tcp_output.c
@@ -37,6 +37,7 @@
 #include <net/tcp.h>
 
 #include <linux/compiler.h>
+#include <linux/gfp.h>
 #include <linux/module.h>
 
 /* People can turn this off for buggy TCP's found in printers etc. */
@@ -2395,13 +2396,17 @@ struct sk_buff *tcp_make_synack(struct sock *sk, struct dst_entry *dst,
 	struct tcp_extend_values *xvp = tcp_xv(rvp);
 	struct inet_request_sock *ireq = inet_rsk(req);
 	struct tcp_sock *tp = tcp_sk(sk);
+	const struct tcp_cookie_values *cvp = tp->cookie_values;
 	struct tcphdr *th;
 	struct sk_buff *skb;
 	struct tcp_md5sig_key *md5;
 	int tcp_header_size;
 	int mss;
+	int s_data_desired = 0;
 
-	skb = sock_wmalloc(sk, MAX_TCP_HEADER + 15, 1, GFP_ATOMIC);
+	if (cvp != NULL && cvp->s_data_constant && cvp->s_data_desired)
+		s_data_desired = cvp->s_data_desired;
+	skb = sock_wmalloc(sk, MAX_TCP_HEADER + 15 + s_data_desired, 1, GFP_ATOMIC);
 	if (skb == NULL)
 		return NULL;
 
@@ -2457,16 +2462,12 @@ struct sk_buff *tcp_make_synack(struct sock *sk, struct dst_entry *dst,
 			     TCPCB_FLAG_SYN | TCPCB_FLAG_ACK);
 
 	if (OPTION_COOKIE_EXTENSION & opts.options) {
-		const struct tcp_cookie_values *cvp = tp->cookie_values;
-
-		if (cvp != NULL &&
-		    cvp->s_data_constant &&
-		    cvp->s_data_desired > 0) {
-			u8 *buf = skb_put(skb, cvp->s_data_desired);
+		if (s_data_desired) {
+			u8 *buf = skb_put(skb, s_data_desired);
 
 			/* copy data directly from the listening socket. */
-			memcpy(buf, cvp->s_data_payload, cvp->s_data_desired);
-			TCP_SKB_CB(skb)->end_seq += cvp->s_data_desired;
+			memcpy(buf, cvp->s_data_payload, s_data_desired);
+			TCP_SKB_CB(skb)->end_seq += s_data_desired;
 		}
 
 		if (opts.hash_size > 0) {
diff --git a/net/ipv4/tcp_probe.c b/net/ipv4/tcp_probe.c
index 9bc805df95d2..f8efada580e8 100644
--- a/net/ipv4/tcp_probe.c
+++ b/net/ipv4/tcp_probe.c
@@ -22,6 +22,7 @@
 #include <linux/kprobes.h>
 #include <linux/socket.h>
 #include <linux/tcp.h>
+#include <linux/slab.h>
 #include <linux/proc_fs.h>
 #include <linux/module.h>
 #include <linux/ktime.h>
diff --git a/net/ipv4/tcp_timer.c b/net/ipv4/tcp_timer.c
index b2e6bbccaee1..8a0ab2977f1f 100644
--- a/net/ipv4/tcp_timer.c
+++ b/net/ipv4/tcp_timer.c
@@ -19,6 +19,7 @@
  */
 
 #include <linux/module.h>
+#include <linux/gfp.h>
 #include <net/tcp.h>
 
 int sysctl_tcp_syn_retries __read_mostly = TCP_SYN_RETRIES;
diff --git a/net/ipv4/tunnel4.c b/net/ipv4/tunnel4.c
index 3959e0ca456a..3b3813cc80b9 100644
--- a/net/ipv4/tunnel4.c
+++ b/net/ipv4/tunnel4.c
@@ -8,6 +8,7 @@
 #include <linux/mutex.h>
 #include <linux/netdevice.h>
 #include <linux/skbuff.h>
+#include <linux/slab.h>
 #include <net/icmp.h>
 #include <net/ip.h>
 #include <net/protocol.h>
diff --git a/net/ipv4/udp.c b/net/ipv4/udp.c
index 608a5446d05b..8fef859db35d 100644
--- a/net/ipv4/udp.c
+++ b/net/ipv4/udp.c
@@ -95,6 +95,7 @@
 #include <linux/mm.h>
 #include <linux/inet.h>
 #include <linux/netdevice.h>
+#include <linux/slab.h>
 #include <net/tcp_states.h>
 #include <linux/skbuff.h>
 #include <linux/proc_fs.h>
@@ -471,8 +472,8 @@ static struct sock *__udp4_lib_lookup(struct net *net, __be32 saddr,
 			if (hslot->count < hslot2->count)
 				goto begin;
 
-			result = udp4_lib_lookup2(net, INADDR_ANY, sport,
-						  daddr, hnum, dif,
+			result = udp4_lib_lookup2(net, saddr, sport,
+						  INADDR_ANY, hnum, dif,
 						  hslot2, slot2);
 		}
 		rcu_read_unlock();
@@ -1371,8 +1372,10 @@ int udp_queue_rcv_skb(struct sock *sk, struct sk_buff *skb)
 	bh_lock_sock(sk);
 	if (!sock_owned_by_user(sk))
 		rc = __udp_queue_rcv_skb(sk, skb);
-	else
-		sk_add_backlog(sk, skb);
+	else if (sk_add_backlog(sk, skb)) {
+		bh_unlock_sock(sk);
+		goto drop;
+	}
 	bh_unlock_sock(sk);
 
 	return rc;
diff --git a/net/ipv4/xfrm4_input.c b/net/ipv4/xfrm4_input.c
index f9f922a0ba88..c791bb63203f 100644
--- a/net/ipv4/xfrm4_input.c
+++ b/net/ipv4/xfrm4_input.c
@@ -9,6 +9,7 @@
  *
  */
 
+#include <linux/slab.h>
 #include <linux/module.h>
 #include <linux/string.h>
 #include <linux/netfilter.h>
diff --git a/net/ipv4/xfrm4_mode_tunnel.c b/net/ipv4/xfrm4_mode_tunnel.c
index 3444f3b34eca..6f368413eb0e 100644
--- a/net/ipv4/xfrm4_mode_tunnel.c
+++ b/net/ipv4/xfrm4_mode_tunnel.c
@@ -4,6 +4,7 @@
  * Copyright (c) 2004-2006 Herbert Xu <herbert@gondor.apana.org.au>
  */
 
+#include <linux/gfp.h>
 #include <linux/init.h>
 #include <linux/kernel.h>
 #include <linux/module.h>
diff --git a/net/ipv4/xfrm4_policy.c b/net/ipv4/xfrm4_policy.c
index 67107d63c1cd..e4a1483fba77 100644
--- a/net/ipv4/xfrm4_policy.c
+++ b/net/ipv4/xfrm4_policy.c
@@ -91,11 +91,12 @@ static int xfrm4_init_path(struct xfrm_dst *path, struct dst_entry *dst,
 	return 0;
 }
 
-static int xfrm4_fill_dst(struct xfrm_dst *xdst, struct net_device *dev)
+static int xfrm4_fill_dst(struct xfrm_dst *xdst, struct net_device *dev,
+			  struct flowi *fl)
 {
 	struct rtable *rt = (struct rtable *)xdst->route;
 
-	xdst->u.rt.fl = rt->fl;
+	xdst->u.rt.fl = *fl;
 
 	xdst->u.dst.dev = dev;
 	dev_hold(dev);