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ipv6: ip6_forward: perform skb->pkt_type check at the beginning

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Packets which have L2 address different from ours should be
already filtered before entering into ip6_forward().

Perform that check at the beginning to avoid processing such packets.

Signed-off-by: Li RongQing <roy.qing.li@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Li RongQing 2014-03-11 10:40:08 +08:00 committed by David S. Miller
parent fcb308d529
commit 090f1166c6
1 changed files with 3 additions and 3 deletions
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6
net/ipv6/ip6_output.c
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@ -367,6 +367,9 @@ int ip6_forward(struct sk_buff *skb)
if (net->ipv6.devconf_all->forwarding == 0)
goto error;
if (skb->pkt_type != PACKET_HOST)
goto drop;
if (skb_warn_if_lro(skb))
goto drop;
@ -376,9 +379,6 @@ int ip6_forward(struct sk_buff *skb)
goto drop;
}
if (skb->pkt_type != PACKET_HOST)
goto drop;
skb_forward_csum(skb);
/*