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net: Make skb->skb_iif always track skb->dev

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Make it follow device decapsulation, from things such as VLAN and
bonding.

The stuff that actually cares about pre-demuxed device pointers, is
handled by the "orig_dev" variable in __netif_receive_skb().  And
the only consumer of that is the po->origdev feature of AF_PACKET
sockets.

Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
David S. Miller 2012-07-23 16:27:54 -07:00
parent 92101b3b2e
commit b68581778c
1 changed files with 1 additions and 2 deletions
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3
net/core/dev.c
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@ -3173,8 +3173,6 @@ static int __netif_receive_skb(struct sk_buff *skb)
if (netpoll_receive_skb(skb))
return NET_RX_DROP;
if (!skb->skb_iif)
skb->skb_iif = skb->dev->ifindex;
orig_dev = skb->dev;
skb_reset_network_header(skb);
@ -3186,6 +3184,7 @@ static int __netif_receive_skb(struct sk_buff *skb)
rcu_read_lock();
another_round:
skb->skb_iif = skb->dev->ifindex;
__this_cpu_inc(softnet_data.processed);