net: vlan: prepare for 802.1ad support

Make the encapsulation protocol value a property of VLAN devices and change
the device lookup functions to take the protocol value into account.

Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 4 insertions, 0 deletions

diff --git a/net/8021q/vlan_gvrp.c b/net/8021q/vlan_gvrp.c
index 6f9755352760..66a80320b032 100644
--- a/net/8021q/vlan_gvrp.c
+++ b/net/8021q/vlan_gvrp.c
@@ -32,6 +32,8 @@ int vlan_gvrp_request_join(const struct net_device *dev)
         const struct vlan_dev_priv *vlan = vlan_dev_priv(dev);
         __be16 vlan_id = htons(vlan->vlan_id);
 
+        if (vlan->vlan_proto != htons(ETH_P_8021Q))
+                return 0;
         return garp_request_join(vlan->real_dev, &vlan_gvrp_app,
                                  &vlan_id, sizeof(vlan_id), GVRP_ATTR_VID);
 }
@@ -41,6 +43,8 @@ void vlan_gvrp_request_leave(const struct net_device *dev)
         const struct vlan_dev_priv *vlan = vlan_dev_priv(dev);
         __be16 vlan_id = htons(vlan->vlan_id);
 
+        if (vlan->vlan_proto != htons(ETH_P_8021Q))
+                return;
         garp_request_leave(vlan->real_dev, &vlan_gvrp_app,
                            &vlan_id, sizeof(vlan_id), GVRP_ATTR_VID);
 }