Commit 6b1e960f authored Mar 18, 2011 by Herbert Xu Committed by David S. Miller Mar 18, 2011

bridge: Reset IPCB when entering IP stack on NF_FORWARD



Whenever we enter the IP stack proper from bridge netfilter we
need to ensure that the skb is in a form the IP stack expects
it to be in.

The entry point on NF_FORWARD did not meet the requirements of
the IP stack, therefore leading to potential crashes/panics.

This patch fixes the problem.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Acked-by: Stephen Hemminger <shemminger@vyatta.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

parent d870bfb9

net/bridge/br_netfilter.c

+3 −0

Original line number	Diff line number	Diff line
		@@ -739,6 +739,9 @@ static unsigned int br_nf_forward_ip(unsigned int hook, struct sk_buff *skb,
		nf_bridge->mask \|= BRNF_PKT_TYPE;
		}

		if (br_parse_ip_options(skb))
		return NF_DROP;

		/* The physdev module checks on this */
		nf_bridge->mask \|= BRNF_BRIDGED;
		nf_bridge->physoutdev = skb->dev;