From 49b4994c14010b851351f20f33d8660311aaa86e Mon Sep 17 00:00:00 2001 From: David Herrmann Date: Tue, 15 Jan 2019 14:42:16 +0100 Subject: [PATCH] net/ipv6/udp_tunnel: prefer SO_BINDTOIFINDEX over SO_BINDTODEVICE The udp-tunnel setup allows binding sockets to a network device. Prefer the new SO_BINDTOIFINDEX to avoid temporarily resolving the device-name just to look it up in the ioctl again. Reviewed-by: Tom Gundersen Signed-off-by: David Herrmann Signed-off-by: David S. Miller --- net/ipv6/ip6_udp_tunnel.c | 15 +++------------ 1 file changed, 3 insertions(+), 12 deletions(-) diff --git a/net/ipv6/ip6_udp_tunnel.c b/net/ipv6/ip6_udp_tunnel.c index ad1a9ccd4b44..25430c991cea 100644 --- a/net/ipv6/ip6_udp_tunnel.c +++ b/net/ipv6/ip6_udp_tunnel.c @@ -32,18 +32,9 @@ int udp_sock_create6(struct net *net, struct udp_port_cfg *cfg, goto error; } if (cfg->bind_ifindex) { - struct net_device *dev; - - dev = dev_get_by_index(net, cfg->bind_ifindex); - if (!dev) { - err = -ENODEV; - goto error; - } - - err = kernel_setsockopt(sock, SOL_SOCKET, SO_BINDTODEVICE, - dev->name, strlen(dev->name) + 1); - dev_put(dev); - + err = kernel_setsockopt(sock, SOL_SOCKET, SO_BINDTOIFINDEX, + (void *)&cfg->bind_ifindex, + sizeof(cfg->bind_ifindex)); if (err < 0) goto error; }