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net: check UDP tunnel RX port offload feature before calling tunnel ndo ndo 

If NETIF_F_RX_UDP_TUNNEL_PORT was disabled on a given netdevice, skip
the tunnel offload ndo call during tunnel port creation and deletion.

Signed-off-by: Sabrina Dubroca <sd@queasysnail.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Sabrina Dubroca 2017-07-21 12:49:29 +02:00 committed by David S. Miller
parent d764a122cc
commit 7a27fc6d53
1 changed files with 6 additions and 1 deletions
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7
net/ipv4/udp_tunnel.c
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@ -82,7 +82,8 @@ 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)
if (!dev->netdev_ops->ndo_udp_tunnel_add ||
!(dev->features & NETIF_F_RX_UDP_TUNNEL_PORT))
return;
ti.type = type;
@ -109,6 +110,8 @@ void udp_tunnel_notify_add_rx_port(struct socket *sock, unsigned short type)
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);
}
rcu_read_unlock();
@ -131,6 +134,8 @@ void udp_tunnel_notify_del_rx_port(struct socket *sock, unsigned short type)
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);
}
rcu_read_unlock();