1 files changed, 12 insertions, 9 deletions

diff --git a/net/ipv4/ip_input.c b/net/ipv4/ip_input.c
index 6563139..7b4bad6 100644
--- a/net/ipv4/ip_input.c
+++ b/net/ipv4/ip_input.c
@@ -160,6 +160,7 @@ int ip_call_ra_chain(struct sk_buff *skb)
 	struct ip_ra_chain *ra;
 	u8 protocol = ip_hdr(skb)->protocol;
 	struct sock *last = NULL;
+	struct net_device *dev = skb->dev;
 
 	read_lock(&ip_ra_lock);
 	for (ra = ip_ra_chain; ra; ra = ra->next) {
@@ -170,7 +171,8 @@ int ip_call_ra_chain(struct sk_buff *skb)
 		 */
 		if (sk && inet_sk(sk)->num == protocol &&
 		    (!sk->sk_bound_dev_if ||
-		     sk->sk_bound_dev_if == skb->dev->ifindex)) {
+		     sk->sk_bound_dev_if == dev->ifindex) &&
+		    sock_net(sk) == dev_net(dev)) {
 			if (ip_hdr(skb)->frag_off & htons(IP_MF | IP_OFFSET)) {
 				if (ip_defrag(skb, IP_DEFRAG_CALL_RA_CHAIN)) {
 					read_unlock(&ip_ra_lock);
@@ -197,6 +199,8 @@ int ip_call_ra_chain(struct sk_buff *skb)
 
 static int ip_local_deliver_finish(struct sk_buff *skb)
 {
+	struct net *net = dev_net(skb->dev);
+
 	__skb_pull(skb, ip_hdrlen(skb));
 
 	/* Point into the IP datagram, just past the header. */
@@ -212,7 +216,8 @@ static int ip_local_deliver_finish(struct sk_buff *skb)
 		raw = raw_local_deliver(skb, protocol);
 
 		hash = protocol & (MAX_INET_PROTOS - 1);
-		if ((ipprot = rcu_dereference(inet_protos[hash])) != NULL) {
+		ipprot = rcu_dereference(inet_protos[hash]);
+		if (ipprot != NULL && (net == &init_net || ipprot->netns_ok)) {
 			int ret;
 
 			if (!ipprot->no_policy) {
@@ -283,13 +288,14 @@ static inline int ip_rcv_options(struct sk_buff *skb)
 	}
 
 	iph = ip_hdr(skb);
+	opt = &(IPCB(skb)->opt);
+	opt->optlen = iph->ihl*4 - sizeof(struct iphdr);
 
-	if (ip_options_compile(NULL, skb)) {
+	if (ip_options_compile(dev_net(dev), opt, skb)) {
 		IP_INC_STATS_BH(IPSTATS_MIB_INHDRERRORS);
 		goto drop;
 	}
 
-	opt = &(IPCB(skb)->opt);
 	if (unlikely(opt->srr)) {
 		struct in_device *in_dev = in_dev_get(dev);
 		if (in_dev) {
@@ -297,7 +303,7 @@ static inline int ip_rcv_options(struct sk_buff *skb)
 				if (IN_DEV_LOG_MARTIANS(in_dev) &&
 				    net_ratelimit())
 					printk(KERN_INFO "source route option "
-					       "%u.%u.%u.%u -> %u.%u.%u.%u\n",
+					       NIPQUAD_FMT " -> " NIPQUAD_FMT "\n",
 					       NIPQUAD(iph->saddr),
 					       NIPQUAD(iph->daddr));
 				in_dev_put(in_dev);
@@ -351,7 +357,7 @@ static int ip_rcv_finish(struct sk_buff *skb)
 	if (iph->ihl > 5 && ip_rcv_options(skb))
 		goto drop;
 
-	rt = (struct rtable*)skb->dst;
+	rt = skb->rtable;
 	if (rt->rt_type == RTN_MULTICAST)
 		IP_INC_STATS_BH(IPSTATS_MIB_INMCASTPKTS);
 	else if (rt->rt_type == RTN_BROADCAST)
@@ -372,9 +378,6 @@ int ip_rcv(struct sk_buff *skb, struct net_device *dev, struct packet_type *pt,
 	struct iphdr *iph;
 	u32 len;
 
-	if (dev->nd_net != &init_net)
-		goto drop;
-
 	/* When the interface is in promisc. mode, drop all the crap
 	 * that it receives, do not try to analyse it.
 	 */