udp_tunnel: remove REGISTER/UNREGISTER handling from tunnel drivers

udp_tunnel_nic handles REGISTER and UNREGISTER event, now that all
drivers use that infra we can drop the event handling in the tunnel
drivers.
Reviewed-by: Alexander Duyck <alexanderduyck@fb.com>
Reviewed-by: Jacob Keller <jacob.e.keller@intel.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

drivers/net/geneve.c

@@ -1851,16 +1851,10 @@ static int geneve_netdevice_event(struct notifier_block *unused,
 {
 	struct net_device *dev = netdev_notifier_info_to_dev(ptr);
 
-	if (event == NETDEV_UDP_TUNNEL_PUSH_INFO ||
-	    event == NETDEV_UDP_TUNNEL_DROP_INFO) {
-		geneve_offload_rx_ports(dev, event == NETDEV_UDP_TUNNEL_PUSH_INFO);
-	} else if (event == NETDEV_UNREGISTER) {
-		if (!dev->udp_tunnel_nic_info)
-			geneve_offload_rx_ports(dev, false);
-	} else if (event == NETDEV_REGISTER) {
-		if (!dev->udp_tunnel_nic_info)
+	if (event == NETDEV_UDP_TUNNEL_PUSH_INFO)
 		geneve_offload_rx_ports(dev, true);
-	}
+	else if (event == NETDEV_UDP_TUNNEL_DROP_INFO)
+		geneve_offload_rx_ports(dev, false);
 
 	return NOTIFY_DONE;
 }

drivers/net/vxlan.c

@@ -4521,17 +4521,12 @@ static int vxlan_netdevice_event(struct notifier_block *unused,
 	struct net_device *dev = netdev_notifier_info_to_dev(ptr);
 	struct vxlan_net *vn = net_generic(dev_net(dev), vxlan_net_id);
 
-	if (event == NETDEV_UNREGISTER) {
-		if (!dev->udp_tunnel_nic_info)
-			vxlan_offload_rx_ports(dev, false);
+	if (event == NETDEV_UNREGISTER)
 		vxlan_handle_lowerdev_unregister(vn, dev);
-	} else if (event == NETDEV_REGISTER) {
-		if (!dev->udp_tunnel_nic_info)
+	else if (event == NETDEV_UDP_TUNNEL_PUSH_INFO)
 		vxlan_offload_rx_ports(dev, true);
-	} else if (event == NETDEV_UDP_TUNNEL_PUSH_INFO ||
-		   event == NETDEV_UDP_TUNNEL_DROP_INFO) {
-		vxlan_offload_rx_ports(dev, event == NETDEV_UDP_TUNNEL_PUSH_INFO);
-	}
+	else if (event == NETDEV_UDP_TUNNEL_DROP_INFO)
+		vxlan_offload_rx_ports(dev, false);
 
 	return NOTIFY_DONE;
 }