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udp_tunnel: reshuffle NETIF_F_RX_UDP_TUNNEL_PORT checks 

Move the NETIF_F_RX_UDP_TUNNEL_PORT feature check into
udp_tunnel_nic_*_port() helpers, since they're always
done right before the call.

Add similar checks before calling the notifier.
udp_tunnel_nic invokes the notifier without checking
features which could result in some wasted cycles.

Reviewed-by: Alexander Duyck <alexanderduyck@fb.com>
Reviewed-by: Jacob Keller <jacob.e.keller@intel.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Jakub Kicinski 2021-01-06 13:06:37 -08:00
parent 30bfce1094
commit b9ef3fecd1
2 changed files with 8 additions and 10 deletions
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8
include/net/udp_tunnel.h
View File

@ -129,12 +129,16 @@ void udp_tunnel_notify_del_rx_port(struct socket *sock, unsigned short type);
static inline void udp_tunnel_get_rx_info(struct net_device *dev)
{
ASSERT_RTNL();
if (!(dev->features & NETIF_F_RX_UDP_TUNNEL_PORT))
return;
call_netdevice_notifiers(NETDEV_UDP_TUNNEL_PUSH_INFO, dev);
}
static inline void udp_tunnel_drop_rx_info(struct net_device *dev)
{
ASSERT_RTNL();
if (!(dev->features & NETIF_F_RX_UDP_TUNNEL_PORT))
return;
call_netdevice_notifiers(NETDEV_UDP_TUNNEL_DROP_INFO, dev);
}
@ -323,6 +327,8 @@ udp_tunnel_nic_set_port_priv(struct net_device *dev, unsigned int table,
static inline void
udp_tunnel_nic_add_port(struct net_device *dev, struct udp_tunnel_info *ti)
{
if (!(dev->features & NETIF_F_RX_UDP_TUNNEL_PORT))
return;
if (udp_tunnel_nic_ops)
udp_tunnel_nic_ops->add_port(dev, ti);
}
@ -330,6 +336,8 @@ udp_tunnel_nic_add_port(struct net_device *dev, struct udp_tunnel_info *ti)
static inline void
udp_tunnel_nic_del_port(struct net_device *dev, struct udp_tunnel_info *ti)
{
if (!(dev->features & NETIF_F_RX_UDP_TUNNEL_PORT))
return;
if (udp_tunnel_nic_ops)
udp_tunnel_nic_ops->del_port(dev, ti);
}

10
net/ipv4/udp_tunnel_core.c
View File

@ -90,9 +90,6 @@ 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->features & NETIF_F_RX_UDP_TUNNEL_PORT))
return;
ti.type = type;
ti.sa_family = sk->sk_family;
ti.port = inet_sk(sk)->inet_sport;
@ -107,9 +104,6 @@ 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->features & NETIF_F_RX_UDP_TUNNEL_PORT))
return;
ti.type = type;
ti.sa_family = sk->sk_family;
ti.port = inet_sk(sk)->inet_sport;
@ -132,8 +126,6 @@ void udp_tunnel_notify_add_rx_port(struct socket *sock, unsigned short type)
rcu_read_lock();
for_each_netdev_rcu(net, dev) {
if (!(dev->features & NETIF_F_RX_UDP_TUNNEL_PORT))
continue;
udp_tunnel_nic_add_port(dev, &ti);
}
rcu_read_unlock();
@ -154,8 +146,6 @@ void udp_tunnel_notify_del_rx_port(struct socket *sock, unsigned short type)
rcu_read_lock();
for_each_netdev_rcu(net, dev) {
if (!(dev->features & NETIF_F_RX_UDP_TUNNEL_PORT))
continue;
udp_tunnel_nic_del_port(dev, &ti);
}
rcu_read_unlock();