net: add a list_head parameter to dellink() method

Adding a list_head parameter to rtnl_link_ops->dellink() methods
allow us to queue devices on a list, in order to dismantle
them all at once.

Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/8021q/vlan.c b/net/8021q/vlan.c
index 8836575..6b5c9dd 100644
--- a/net/8021q/vlan.c
+++ b/net/8021q/vlan.c
@@ -140,7 +140,7 @@
 	vlan_group_free(container_of(rcu, struct vlan_group, rcu));
 }
 
-void unregister_vlan_dev(struct net_device *dev)
+void unregister_vlan_dev(struct net_device *dev, struct list_head *head)
 {
 	struct vlan_dev_info *vlan = vlan_dev_info(dev);
 	struct net_device *real_dev = vlan->real_dev;
@@ -164,7 +164,7 @@
 
 	synchronize_net();
 
-	unregister_netdevice(dev);
+	unregister_netdevice_queue(dev, head);
 
 	/* If the group is now empty, kill off the group. */
 	if (grp->nr_vlans == 0) {
@@ -535,7 +535,7 @@
 			if (grp->nr_vlans == 1)
 				i = VLAN_GROUP_ARRAY_LEN;
 
-			unregister_vlan_dev(vlandev);
+			unregister_vlan_dev(vlandev, NULL);
 		}
 		break;
 	}
@@ -642,7 +642,7 @@
 		err = -EPERM;
 		if (!capable(CAP_NET_ADMIN))
 			break;
-		unregister_vlan_dev(dev);
+		unregister_vlan_dev(dev, NULL);
 		err = 0;
 		break;