vlan_dev: VLAN 0 should be treated as "no vlan tag" (802.1p packet)

[~andy/linux] / net / 8021q / vlan_core.c

diff --git a/net/8021q/vlan_core.c b/net/8021q/vlan_core.c
index 1b9406a31f0c3dde95df11f889c0aa514e0b72ca..01ddb0472f86c511f49ff8a602a726dd60550ff0 100644 (file)
--- a/net/8021q/vlan_core.c
+++ b/net/8021q/vlan_core.c
@@ -8,6 +8,9 @@
 int __vlan_hwaccel_rx(struct sk_buff *skb, struct vlan_group *grp,
                      u16 vlan_tci, int polling)
 {
+       struct net_device *vlan_dev;
+       u16 vlan_id;
+
        if (netpoll_rx(skb))
                return NET_RX_DROP;
 
@@ -16,9 +19,12 @@ int __vlan_hwaccel_rx(struct sk_buff *skb, struct vlan_group *grp,
 
        skb->skb_iif = skb->dev->ifindex;
        __vlan_hwaccel_put_tag(skb, vlan_tci);
-       skb->dev = vlan_group_get_device(grp, vlan_tci & VLAN_VID_MASK);
+       vlan_id = vlan_tci & VLAN_VID_MASK;
+       vlan_dev = vlan_group_get_device(grp, vlan_id);
 
-       if (!skb->dev)
+       if (vlan_dev)
+               skb->dev = vlan_dev;
+       else if (vlan_id)
                goto drop;
 
        return (polling ? netif_receive_skb(skb) : netif_rx(skb));
@@ -83,15 +89,20 @@ vlan_gro_common(struct napi_struct *napi, struct vlan_group *grp,
                unsigned int vlan_tci, struct sk_buff *skb)
 {
        struct sk_buff *p;
+       struct net_device *vlan_dev;
+       u16 vlan_id;
 
        if (skb_bond_should_drop(skb, ACCESS_ONCE(skb->dev->master)))
                skb->deliver_no_wcard = 1;
 
        skb->skb_iif = skb->dev->ifindex;
        __vlan_hwaccel_put_tag(skb, vlan_tci);
-       skb->dev = vlan_group_get_device(grp, vlan_tci & VLAN_VID_MASK);
+       vlan_id = vlan_tci & VLAN_VID_MASK;
+       vlan_dev = vlan_group_get_device(grp, vlan_id);
 
-       if (!skb->dev)
+       if (vlan_dev)
+               skb->dev = vlan_dev;
+       else if (vlan_id)
                goto drop;
 
        for (p = napi->gro_list; p; p = p->next) {