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Subject[187/244] vlan: reset headers on accel emulation path
3.0-stable review patch.  If anyone has any objections, please let us know.


From: Jiri Pirko <>

[ Upstream commit c5114cd59d2664f258b0d021d79b1532d94bdc2b ]

It's after all necessary to do reset headers here. The reason is we
cannot depend that it gets reseted in __netif_receive_skb once skb is
reinjected. For incoming vlanids without vlan_dev, vlan_do_receive()
returns false with skb != NULL and __netif_reveive_skb continues, skb is
not reinjected.

This might be good material for 3.0-stable as well

Reported-by: Mike Auty <>
Signed-off-by: Jiri Pirko <>
Signed-off-by: David S. Miller <>
Signed-off-by: Greg Kroah-Hartman <>
net/8021q/vlan_core.c | 2 ++
1 file changed, 2 insertions(+)

--- a/net/8021q/vlan_core.c
+++ b/net/8021q/vlan_core.c
@@ -171,6 +171,8 @@ struct sk_buff *vlan_untag(struct sk_buf
if (unlikely(!skb))
goto err_free;

+ skb_reset_network_header(skb);
+ skb_reset_transport_header(skb);
return skb;


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