netdev - [PATCH 11/25] netns ct: get netns from device for ICMP/ICMP6

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Date:	Sun, 22 Jun 2008 05:10:13 +0400
From:	Alexey Dobriyan <adobriyan@...il.com>
To:	kaber@...sh.net
Cc:	netdev@...r.kernel.org, netfilter-devel@...r.kernel.org,
	den@...nvz.org, xemul@...nvz.org, ebiederm@...ssion.com,
	benjamin.thery@...l.net, dlezcano@...ibm.com
Subject: [PATCH 11/25] netns ct: get netns from device for ICMP/ICMP6

Grab it either from skb->dev in input, or skb->dst->dev in output.

Signed-off-by: Alexey Dobriyan <adobriyan@...il.com>
---

 net/ipv4/netfilter/nf_conntrack_proto_icmp.c   |    6 +++++-
 net/ipv6/netfilter/nf_conntrack_proto_icmpv6.c |    6 +++++-
 2 files changed, 10 insertions(+), 2 deletions(-)

--- a/net/ipv4/netfilter/nf_conntrack_proto_icmp.c
+++ b/net/ipv4/netfilter/nf_conntrack_proto_icmp.c
@@ -127,6 +127,7 @@ icmp_error_message(struct sk_buff *skb,
 		 enum ip_conntrack_info *ctinfo,
 		 unsigned int hooknum)
 {
+	struct net_device *dev;
 	struct nf_conntrack_tuple innertuple, origtuple;
 	const struct nf_conntrack_l4proto *innerproto;
 	const struct nf_conntrack_tuple_hash *h;
@@ -155,7 +156,10 @@ icmp_error_message(struct sk_buff *skb,
 
 	*ctinfo = IP_CT_RELATED;
 
-	h = nf_conntrack_find_get(&init_net, &innertuple);
+	dev = skb->dev;
+	if (!dev)
+		dev = skb->dst->dev;
+	h = nf_conntrack_find_get(dev_net(dev), &innertuple);
 	if (!h) {
 		pr_debug("icmp_error_message: no match\n");
 		return -NF_ACCEPT;
--- a/net/ipv6/netfilter/nf_conntrack_proto_icmpv6.c
+++ b/net/ipv6/netfilter/nf_conntrack_proto_icmpv6.c
@@ -127,6 +127,7 @@ icmpv6_error_message(struct sk_buff *skb,
 		     enum ip_conntrack_info *ctinfo,
 		     unsigned int hooknum)
 {
+	struct net_device *dev;
 	struct nf_conntrack_tuple intuple, origtuple;
 	const struct nf_conntrack_tuple_hash *h;
 	const struct nf_conntrack_l4proto *inproto;
@@ -156,7 +157,10 @@ icmpv6_error_message(struct sk_buff *skb,
 
 	*ctinfo = IP_CT_RELATED;
 
-	h = nf_conntrack_find_get(&init_net, &intuple);
+	dev = skb->dev;
+	if (!dev)
+		dev = skb->dst->dev;
+	h = nf_conntrack_find_get(dev_net(dev), &intuple);
 	if (!h) {
 		pr_debug("icmpv6_error: no match\n");
 		return -NF_ACCEPT;
-- 
1.5.4.5


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