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authorEric Dumazet <eric.dumazet@gmail.com>2011-10-29 06:13:39 +0000
committerDavid S. Miller <davem@davemloft.net>2011-10-30 04:43:30 -0400
commit6a32e4f9dd9219261f8856f817e6655114cfec2f (patch)
tree964061ded76a2e5c9e2aa9122a3a88956db109c1 /include/linux/if_vlan.h
parent14ef37b6d00eb5d06704e45989ba4c21e7be7673 (diff)
downloadblackbird-op-linux-6a32e4f9dd9219261f8856f817e6655114cfec2f.tar.gz
blackbird-op-linux-6a32e4f9dd9219261f8856f817e6655114cfec2f.zip
vlan: allow nested vlan_do_receive()
commit 2425717b27eb (net: allow vlan traffic to be received under bond) broke ARP processing on vlan on top of bonding. +-------+ eth0 --| bond0 |---bond0.103 eth1 --| | +-------+ 52870.115435: skb_gro_reset_offset <-napi_gro_receive 52870.115435: dev_gro_receive <-napi_gro_receive 52870.115435: napi_skb_finish <-napi_gro_receive 52870.115435: netif_receive_skb <-napi_skb_finish 52870.115435: get_rps_cpu <-netif_receive_skb 52870.115435: __netif_receive_skb <-netif_receive_skb 52870.115436: vlan_do_receive <-__netif_receive_skb 52870.115436: bond_handle_frame <-__netif_receive_skb 52870.115436: vlan_do_receive <-__netif_receive_skb 52870.115436: arp_rcv <-__netif_receive_skb 52870.115436: kfree_skb <-arp_rcv Packet is dropped in arp_rcv() because its pkt_type was set to PACKET_OTHERHOST in the first vlan_do_receive() call, since no eth0.103 exists. We really need to change pkt_type only if no more rx_handler is about to be called for the packet. Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Reviewed-by: Jiri Pirko <jpirko@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include/linux/if_vlan.h')
-rw-r--r--include/linux/if_vlan.h6
1 files changed, 3 insertions, 3 deletions
diff --git a/include/linux/if_vlan.h b/include/linux/if_vlan.h
index 44da4822bcab..12d5543b14f2 100644
--- a/include/linux/if_vlan.h
+++ b/include/linux/if_vlan.h
@@ -106,7 +106,7 @@ extern struct net_device *__vlan_find_dev_deep(struct net_device *real_dev,
extern struct net_device *vlan_dev_real_dev(const struct net_device *dev);
extern u16 vlan_dev_vlan_id(const struct net_device *dev);
-extern bool vlan_do_receive(struct sk_buff **skb);
+extern bool vlan_do_receive(struct sk_buff **skb, bool last_handler);
extern struct sk_buff *vlan_untag(struct sk_buff *skb);
#else
@@ -128,9 +128,9 @@ static inline u16 vlan_dev_vlan_id(const struct net_device *dev)
return 0;
}
-static inline bool vlan_do_receive(struct sk_buff **skb)
+static inline bool vlan_do_receive(struct sk_buff **skb, bool last_handler)
{
- if ((*skb)->vlan_tci & VLAN_VID_MASK)
+ if (((*skb)->vlan_tci & VLAN_VID_MASK) && last_handler)
(*skb)->pkt_type = PACKET_OTHERHOST;
return false;
}
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