geneve/vxlan: offload ports on register/unregister events

This improves consistency of handling when moving a netdev to another
netns. Most drivers currently do a full reset when the device goes up,
so that will flush the offload state anyway.

Signed-off-by: Sabrina Dubroca <sd@queasysnail.net>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/geneve.c

@@ -1567,8 +1567,13 @@ 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)
+	    event == NETDEV_UDP_TUNNEL_DROP_INFO) {
 		geneve_offload_rx_ports(dev, event == NETDEV_UDP_TUNNEL_PUSH_INFO);
+	} else if (event == NETDEV_UNREGISTER) {
+		geneve_offload_rx_ports(dev, false);
+	} else if (event == NETDEV_REGISTER) {
+		geneve_offload_rx_ports(dev, true);
+	}
 
 	return NOTIFY_DONE;
 }

drivers/net/vxlan.c

@@ -3638,11 +3638,15 @@ 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 (event == NETDEV_UNREGISTER) {
+		vxlan_offload_rx_ports(dev, false);
 		vxlan_handle_lowerdev_unregister(vn, dev);
-	else if (event == NETDEV_UDP_TUNNEL_PUSH_INFO ||
-		 event == NETDEV_UDP_TUNNEL_DROP_INFO)
+	} else if (event == NETDEV_REGISTER) {
+		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);
+	}
 
 	return NOTIFY_DONE;
 }