10 files changed, 40 insertions, 25 deletions

diff --git a/net/ipv4/igmp.c b/net/ipv4/igmp.c
index 83532d22129f..70695221a10d 100644
--- a/net/ipv4/igmp.c
+++ b/net/ipv4/igmp.c
@@ -1718,7 +1718,7 @@ static int ip_mc_add_src(struct in_device *in_dev, __be32 *pmca, int sfmode,
 
 		pmc->sfcount[sfmode]--;
 		for (j=0; j<i; j++)
-			(void) ip_mc_del1_src(pmc, sfmode, &psfsrc[i]);
+			(void) ip_mc_del1_src(pmc, sfmode, &psfsrc[j]);
 	} else if (isexclude != (pmc->sfcount[MCAST_EXCLUDE] != 0)) {
 #ifdef CONFIG_IP_MULTICAST
 		struct ip_sf_list *psf;
diff --git a/net/ipv4/inet_hashtables.c b/net/ipv4/inet_hashtables.c
index 3c0369a3a663..984ec656b03b 100644
--- a/net/ipv4/inet_hashtables.c
+++ b/net/ipv4/inet_hashtables.c
@@ -21,6 +21,7 @@
 
 #include <net/inet_connection_sock.h>
 #include <net/inet_hashtables.h>
+#include <net/secure_seq.h>
 #include <net/ip.h>
 
 /*
diff --git a/net/ipv4/inetpeer.c b/net/ipv4/inetpeer.c
index e38213817d0a..86f13c67ea85 100644
--- a/net/ipv4/inetpeer.c
+++ b/net/ipv4/inetpeer.c
@@ -19,6 +19,7 @@
 #include <linux/net.h>
 #include <net/ip.h>
 #include <net/inetpeer.h>
+#include <net/secure_seq.h>
 
 /*
  *  Theory of operations.
diff --git a/net/ipv4/ip_output.c b/net/ipv4/ip_output.c
index ccaaa851ab42..8c6563361ab5 100644
--- a/net/ipv4/ip_output.c
+++ b/net/ipv4/ip_output.c
@@ -122,6 +122,7 @@ 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));
+	skb_dst_force(newskb);
 	netif_rx_ni(newskb);
 	return 0;
 }
@@ -204,9 +205,15 @@ static inline int ip_finish_output2(struct sk_buff *skb)
 		skb = skb2;
 	}
 
+	rcu_read_lock();
 	neigh = dst_get_neighbour(dst);
-	if (neigh)
-		return neigh_output(neigh, skb);
+	if (neigh) {
+		int res = neigh_output(neigh, skb);
+
+		rcu_read_unlock();
+		return res;
+	}
+	rcu_read_unlock();
 
 	if (net_ratelimit())
 		printk(KERN_DEBUG "ip_finish_output2: No header cache and no neighbour!\n");
diff --git a/net/ipv4/ip_sockglue.c b/net/ipv4/ip_sockglue.c
index ab0c9efd1efa..8905e92f896a 100644
--- a/net/ipv4/ip_sockglue.c
+++ b/net/ipv4/ip_sockglue.c
@@ -1067,7 +1067,7 @@ EXPORT_SYMBOL(compat_ip_setsockopt);
  */
 
 static int do_ip_getsockopt(struct sock *sk, int level, int optname,
-			    char __user *optval, int __user *optlen)
+			    char __user *optval, int __user *optlen, unsigned flags)
 {
 	struct inet_sock *inet = inet_sk(sk);
 	int val;
@@ -1240,7 +1240,7 @@ static int do_ip_getsockopt(struct sock *sk, int level, int optname,
 
 		msg.msg_control = optval;
 		msg.msg_controllen = len;
-		msg.msg_flags = 0;
+		msg.msg_flags = flags;
 
 		if (inet->cmsg_flags & IP_CMSG_PKTINFO) {
 			struct in_pktinfo info;
@@ -1294,7 +1294,7 @@ int ip_getsockopt(struct sock *sk, int level,
 {
 	int err;
 
-	err = do_ip_getsockopt(sk, level, optname, optval, optlen);
+	err = do_ip_getsockopt(sk, level, optname, optval, optlen, 0);
 #ifdef CONFIG_NETFILTER
 	/* we need to exclude all possible ENOPROTOOPTs except default case */
 	if (err == -ENOPROTOOPT && optname != IP_PKTOPTIONS &&
@@ -1327,7 +1327,8 @@ int compat_ip_getsockopt(struct sock *sk, int level, int optname,
 		return compat_mc_getsockopt(sk, level, optname, optval, optlen,
 			ip_getsockopt);
 
-	err = do_ip_getsockopt(sk, level, optname, optval, optlen);
+	err = do_ip_getsockopt(sk, level, optname, optval, optlen,
+		MSG_CMSG_COMPAT);
 
 #ifdef CONFIG_NETFILTER
 	/* we need to exclude all possible ENOPROTOOPTs except default case */
diff --git a/net/ipv4/netfilter.c b/net/ipv4/netfilter.c
index 2e97e3ec1eb7..929b27bdeb79 100644
--- a/net/ipv4/netfilter.c
+++ b/net/ipv4/netfilter.c
@@ -18,17 +18,15 @@ int ip_route_me_harder(struct sk_buff *skb, unsigned addr_type)
 	struct rtable *rt;
 	struct flowi4 fl4 = {};
 	__be32 saddr = iph->saddr;
-	__u8 flags = 0;
+	__u8 flags = skb->sk ? inet_sk_flowi_flags(skb->sk) : 0;
 	unsigned int hh_len;
 
-	if (!skb->sk && addr_type != RTN_LOCAL) {
-		if (addr_type == RTN_UNSPEC)
-			addr_type = inet_addr_type(net, saddr);
-		if (addr_type == RTN_LOCAL || addr_type == RTN_UNICAST)
-			flags |= FLOWI_FLAG_ANYSRC;
-		else
-			saddr = 0;
-	}
+	if (addr_type == RTN_UNSPEC)
+		addr_type = inet_addr_type(net, saddr);
+	if (addr_type == RTN_LOCAL || addr_type == RTN_UNICAST)
+		flags |= FLOWI_FLAG_ANYSRC;
+	else
+		saddr = 0;
 
 	/* some non-standard hacks like ipt_REJECT.c:send_reset() can cause
 	 * packets with foreign saddr to appear on the NF_INET_LOCAL_OUT hook.
@@ -38,7 +36,7 @@ int ip_route_me_harder(struct sk_buff *skb, unsigned addr_type)
 	fl4.flowi4_tos = RT_TOS(iph->tos);
 	fl4.flowi4_oif = skb->sk ? skb->sk->sk_bound_dev_if : 0;
 	fl4.flowi4_mark = skb->mark;
-	fl4.flowi4_flags = skb->sk ? inet_sk_flowi_flags(skb->sk) : flags;
+	fl4.flowi4_flags = flags;
 	rt = ip_route_output_key(net, &fl4);
 	if (IS_ERR(rt))
 		return -1;
diff --git a/net/ipv4/netfilter/nf_nat_proto_common.c b/net/ipv4/netfilter/nf_nat_proto_common.c
index 3e61faf23a9a..f52d41ea0690 100644
--- a/net/ipv4/netfilter/nf_nat_proto_common.c
+++ b/net/ipv4/netfilter/nf_nat_proto_common.c
@@ -12,6 +12,7 @@
 #include <linux/ip.h>
 
 #include <linux/netfilter.h>
+#include <net/secure_seq.h>
 #include <net/netfilter/nf_nat.h>
 #include <net/netfilter/nf_nat_core.h>
 #include <net/netfilter/nf_nat_rule.h>
diff --git a/net/ipv4/raw.c b/net/ipv4/raw.c
index 1457acb39cec..61714bd52925 100644
--- a/net/ipv4/raw.c
+++ b/net/ipv4/raw.c
@@ -563,7 +563,8 @@ static int raw_sendmsg(struct kiocb *iocb, struct sock *sk, struct msghdr *msg,
 	flowi4_init_output(&fl4, ipc.oif, sk->sk_mark, tos,
 			   RT_SCOPE_UNIVERSE,
 			   inet->hdrincl ? IPPROTO_RAW : sk->sk_protocol,
-			   FLOWI_FLAG_CAN_SLEEP, daddr, saddr, 0, 0);
+			   inet_sk_flowi_flags(sk) | FLOWI_FLAG_CAN_SLEEP,
+			   daddr, saddr, 0, 0);
 
 	if (!inet->hdrincl) {
 		err = raw_probe_proto_opt(&fl4, msg);
diff --git a/net/ipv4/route.c b/net/ipv4/route.c
index 1730689f560e..cb7efe0567f0 100644
--- a/net/ipv4/route.c
+++ b/net/ipv4/route.c
@@ -109,6 +109,7 @@
 #include <linux/sysctl.h>
 #endif
 #include <net/atmclip.h>
+#include <net/secure_seq.h>
 
 #define RT_FL_TOS(oldflp4) \
     ((u32)(oldflp4->flowi4_tos & (IPTOS_RT_MASK | RTO_ONLINK)))
@@ -730,6 +731,7 @@ static inline int compare_keys(struct rtable *rt1, struct rtable *rt2)
 		((__force u32)rt1->rt_key_src ^ (__force u32)rt2->rt_key_src) |
 		(rt1->rt_mark ^ rt2->rt_mark) |
 		(rt1->rt_key_tos ^ rt2->rt_key_tos) |
+		(rt1->rt_route_iif ^ rt2->rt_route_iif) |
 		(rt1->rt_oif ^ rt2->rt_oif) |
 		(rt1->rt_iif ^ rt2->rt_iif)) == 0;
 }
@@ -1628,16 +1630,18 @@ static int check_peer_redir(struct dst_entry *dst, struct inet_peer *peer)
 {
 	struct rtable *rt = (struct rtable *) dst;
 	__be32 orig_gw = rt->rt_gateway;
-	struct neighbour *n;
+	struct neighbour *n, *old_n;
 
 	dst_confirm(&rt->dst);
 
-	neigh_release(dst_get_neighbour(&rt->dst));
-	dst_set_neighbour(&rt->dst, NULL);
-
 	rt->rt_gateway = peer->redirect_learned.a4;
-	rt_bind_neighbour(rt);
-	n = dst_get_neighbour(&rt->dst);
+
+	n = ipv4_neigh_lookup(&rt->dst, &rt->rt_gateway);
+	if (IS_ERR(n))
+		return PTR_ERR(n);
+	old_n = xchg(&rt->dst._neighbour, n);
+	if (old_n)
+		neigh_release(old_n);
 	if (!n || !(n->nud_state & NUD_VALID)) {
 		if (n)
 			neigh_event_send(n, NULL);
@@ -2318,8 +2322,8 @@ int ip_route_input_common(struct sk_buff *skb, __be32 daddr, __be32 saddr,
 		if ((((__force u32)rth->rt_key_dst ^ (__force u32)daddr) |
 		     ((__force u32)rth->rt_key_src ^ (__force u32)saddr) |
 		     (rth->rt_iif ^ iif) |
-		     rth->rt_oif |
 		     (rth->rt_key_tos ^ tos)) == 0 &&
+		    rt_is_input_route(rth) &&
 		    rth->rt_mark == skb->mark &&
 		    net_eq(dev_net(rth->dst.dev), net) &&
 		    !rt_is_expired(rth)) {
diff --git a/net/ipv4/tcp_ipv4.c b/net/ipv4/tcp_ipv4.c
index 955b8e65b69e..1c12b8ec849d 100644
--- a/net/ipv4/tcp_ipv4.c
+++ b/net/ipv4/tcp_ipv4.c
@@ -72,6 +72,7 @@
 #include <net/timewait_sock.h>
 #include <net/xfrm.h>
 #include <net/netdma.h>
+#include <net/secure_seq.h>
 
 #include <linux/inet.h>
 #include <linux/ipv6.h>