udp_tunnel: hard-wire NDOs to udp_tunnel_nic_*_port() helpers

All drivers use udp_tunnel_nic_*_port() helpers, prepare for
NDO removal by invoking those helpers directly.

The helpers are safe to call on all devices, they check if
device has the UDP tunnel state initialized.
Reviewed-by: Alexander Duyck <alexanderduyck@fb.com>
Reviewed-by: Jacob Keller <jacob.e.keller@intel.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

net/core/dev.c

@@ -10002,7 +10002,7 @@ int register_netdevice(struct net_device *dev)
 	dev->hw_features |= (NETIF_F_SOFT_FEATURES | NETIF_F_SOFT_FEATURES_OFF);
 	dev->features |= NETIF_F_SOFT_FEATURES;
 
-	if (dev->netdev_ops->ndo_udp_tunnel_add) {
+	if (dev->udp_tunnel_nic_info) {
 		dev->features |= NETIF_F_RX_UDP_TUNNEL_PORT;
 		dev->hw_features |= NETIF_F_RX_UDP_TUNNEL_PORT;
 	}

net/ipv4/udp_tunnel_core.c

@@ -90,15 +90,14 @@ void udp_tunnel_push_rx_port(struct net_device *dev, struct socket *sock,
 	struct sock *sk = sock->sk;
 	struct udp_tunnel_info ti;
 
-	if (!dev->netdev_ops->ndo_udp_tunnel_add ||
-	    !(dev->features & NETIF_F_RX_UDP_TUNNEL_PORT))
+	if (!(dev->features & NETIF_F_RX_UDP_TUNNEL_PORT))
 		return;
 
 	ti.type = type;
 	ti.sa_family = sk->sk_family;
 	ti.port = inet_sk(sk)->inet_sport;
 
-	dev->netdev_ops->ndo_udp_tunnel_add(dev, &ti);
+	udp_tunnel_nic_add_port(dev, &ti);
 }
 EXPORT_SYMBOL_GPL(udp_tunnel_push_rx_port);
 
@@ -108,15 +107,14 @@ void udp_tunnel_drop_rx_port(struct net_device *dev, struct socket *sock,
 	struct sock *sk = sock->sk;
 	struct udp_tunnel_info ti;
 
-	if (!dev->netdev_ops->ndo_udp_tunnel_del ||
-	    !(dev->features & NETIF_F_RX_UDP_TUNNEL_PORT))
+	if (!(dev->features & NETIF_F_RX_UDP_TUNNEL_PORT))
 		return;
 
 	ti.type = type;
 	ti.sa_family = sk->sk_family;
 	ti.port = inet_sk(sk)->inet_sport;
 
-	dev->netdev_ops->ndo_udp_tunnel_del(dev, &ti);
+	udp_tunnel_nic_del_port(dev, &ti);
 }
 EXPORT_SYMBOL_GPL(udp_tunnel_drop_rx_port);
 
@@ -134,11 +132,9 @@ void udp_tunnel_notify_add_rx_port(struct socket *sock, unsigned short type)
 
 	rcu_read_lock();
 	for_each_netdev_rcu(net, dev) {
-		if (!dev->netdev_ops->ndo_udp_tunnel_add)
-			continue;
 		if (!(dev->features & NETIF_F_RX_UDP_TUNNEL_PORT))
 			continue;
-		dev->netdev_ops->ndo_udp_tunnel_add(dev, &ti);
+		udp_tunnel_nic_add_port(dev, &ti);
 	}
 	rcu_read_unlock();
 }
@@ -158,11 +154,9 @@ void udp_tunnel_notify_del_rx_port(struct socket *sock, unsigned short type)
 
 	rcu_read_lock();
 	for_each_netdev_rcu(net, dev) {
-		if (!dev->netdev_ops->ndo_udp_tunnel_del)
-			continue;
 		if (!(dev->features & NETIF_F_RX_UDP_TUNNEL_PORT))
 			continue;
-		dev->netdev_ops->ndo_udp_tunnel_del(dev, &ti);
+		udp_tunnel_nic_del_port(dev, &ti);
 	}
 	rcu_read_unlock();
 }