diff options
| author |   Eric Dumazet <eric.dumazet@gmail.com> | 2010-09-30 02:16:44 +0000 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2010-09-30 18:04:21 -0700 |
| commit | 173e79fb70a98b5b223f8dc09c22990d777bdd78 (patch) | |
| tree | 0812b62ac5ae74b605109372437aaaacb6495234 | |
| parent | Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless-2.6 (diff) | |
| download | linux-dev-173e79fb70a98b5b223f8dc09c22990d777bdd78.tar.xz linux-dev-173e79fb70a98b5b223f8dc09c22990d777bdd78.zip | |
vlan: dont drop packets from unknown vlans in promiscuous mode
Roger Luethi noticed packets for unknown VLANs getting silently dropped
even in promiscuous mode.
Check for promiscuous mode in __vlan_hwaccel_rx() and vlan_gro_common()
before drops.
As suggested by Patrick, mark such packets to have skb->pkt_type set to
PACKET_OTHERHOST to make sure they are dropped by IP stack.
Reported-by: Roger Luethi <rl@hellgate.ch>
Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
CC: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
| -rw-r--r-- | net/8021q/vlan_core.c | 14 |
1 files changed, 10 insertions, 4 deletions
diff --git a/net/8021q/vlan_core.c b/net/8021q/vlan_core.c index 01ddb0472f86..0eb96f7e44be 100644 --- a/net/8021q/vlan_core.c +++ b/net/8021q/vlan_core.c @@ -24,8 +24,11 @@ int __vlan_hwaccel_rx(struct sk_buff *skb, struct vlan_group *grp, if (vlan_dev) skb->dev = vlan_dev; - else if (vlan_id) - goto drop; + else if (vlan_id) { + if (!(skb->dev->flags & IFF_PROMISC)) + goto drop; + skb->pkt_type = PACKET_OTHERHOST; + } return (polling ? netif_receive_skb(skb) : netif_rx(skb)); @@ -102,8 +105,11 @@ vlan_gro_common(struct napi_struct *napi, struct vlan_group *grp, if (vlan_dev) skb->dev = vlan_dev; - else if (vlan_id) - goto drop; + else if (vlan_id) { + if (!(skb->dev->flags & IFF_PROMISC)) + goto drop; + skb->pkt_type = PACKET_OTHERHOST; + } for (p = napi->gro_list; p; p = p->next) { NAPI_GRO_CB(p)->same_flow = |