vxlan: treat vni in metadata based tunnels consistently

For metadata based tunnels, VNI is ignored when doing vxlan device lookups
(because such tunnel receives all VNIs). However, this was not honored by
vxlan_xmit_one when doing encapsulation bypass. Move the check for metadata
based tunnel to the common place where it belongs.
Signed-off-by: Jiri Benc <jbenc@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/vxlan.c

@@ -246,6 +246,10 @@ static struct vxlan_dev *vxlan_vs_find_vni(struct vxlan_sock *vs, __be32 vni)
 {
 	struct vxlan_dev *vxlan;
 
+	/* For flow based devices, map all packets to VNI 0 */
+	if (vs->flags & VXLAN_F_COLLECT_METADATA)
+		vni = 0;
+
 	hlist_for_each_entry_rcu(vxlan, vni_head(vs, vni), hlist) {
 		if (vxlan->default_dst.remote_vni == vni)
 			return vxlan;
@@ -1194,10 +1198,6 @@ static void vxlan_rcv(struct vxlan_sock *vs, struct sk_buff *skb,
 	union vxlan_addr saddr;
 	int err = 0;
 
-	/* For flow based devices, map all packets to VNI 0 */
-	if (vs->flags & VXLAN_F_COLLECT_METADATA)
-		vni = 0;
-
 	/* Is this VNI defined? */
 	vxlan = vxlan_vs_find_vni(vs, vni);
 	if (!vxlan)