[NET] NETNS: Omit sock->sk_net without CONFIG_NET_NS.
Introduce per-sock inlines: sock_net(), sock_net_set()
and per-inet_timewait_sock inlines: twsk_net(), twsk_net_set().
Without CONFIG_NET_NS, no namespace other than &init_net exists.
Let's explicitly define them to help compiler optimizations.
Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
diff --git a/net/socket.c b/net/socket.c
index 9d3fbfb..79e5382 100644
--- a/net/socket.c
+++ b/net/socket.c
@@ -857,7 +857,7 @@
sock = file->private_data;
sk = sock->sk;
- net = sk->sk_net;
+ net = sock_net(sk);
if (cmd >= SIOCDEVPRIVATE && cmd <= (SIOCDEVPRIVATE + 15)) {
err = dev_ioctl(net, cmd, argp);
} else
@@ -1375,7 +1375,7 @@
sock = sockfd_lookup_light(fd, &err, &fput_needed);
if (sock) {
- somaxconn = sock->sk->sk_net->sysctl_somaxconn;
+ somaxconn = sock_net(sock->sk)->sysctl_somaxconn;
if ((unsigned)backlog > somaxconn)
backlog = somaxconn;