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[NETFILTER]: Fix connection tracking bug in 2.6.12

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In 2.6.12 we started dropping the conntrack reference when a packet
leaves the IP layer. This broke connection tracking on a bridge,
because bridge-netfilter defers calling some NF_IP_* hooks to the bridge
layer for locally generated packets going out a bridge, where the
conntrack reference is no longer available. This patch keeps the
reference in this case as a temporary solution, long term we will
remove the defered hook calling. No attempt is made to drop the
reference in the bridge-code when it is no longer needed, tc actions
could already have sent the packet anywhere.

Signed-off-by: Patrick McHardy <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
This commit is contained in:
Patrick McHardy 2005-06-28 16:04:44 -07:00 • committed by David S. Miller
commit 9666dae510
2 changed files with 8 additions and 2 deletions
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8
net/ipv4/ip_output.c
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@ -188,7 +188,13 @@ static inline int ip_finish_output2(struct sk_buff *skb)
skb = skb2;
}
nf_reset(skb);
#ifdef CONFIG_BRIDGE_NETFILTER
/* bridge-netfilter defers calling some IP hooks to the bridge layer
* and still needs the conntrack reference.
*/
if (skb->nf_bridge == NULL)
#endif
nf_reset(skb);
if (hh) {
int hh_alen;