From b9ef3fecd1403fc1c2dd146e67b366691394b80f Mon Sep 17 00:00:00 2001 From: Jakub Kicinski Date: Wed, 6 Jan 2021 13:06:37 -0800 Subject: [PATCH] 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 Reviewed-by: Jacob Keller Signed-off-by: Jakub Kicinski --- include/net/udp_tunnel.h | 8 ++++++++ net/ipv4/udp_tunnel_core.c | 10 ---------- 2 files changed, 8 insertions(+), 10 deletions(-) diff --git a/include/net/udp_tunnel.h b/include/net/udp_tunnel.h index 2ea453dac876..282d10ee60e1 100644 --- a/include/net/udp_tunnel.h +++ b/include/net/udp_tunnel.h @@ -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); } diff --git a/net/ipv4/udp_tunnel_core.c b/net/ipv4/udp_tunnel_core.c index 376a085be7ed..b97e3635acf5 100644 --- a/net/ipv4/udp_tunnel_core.c +++ b/net/ipv4/udp_tunnel_core.c @@ -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();