[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>

1 files changed, 1 insertions, 1 deletions

diff --git a/net/tipc/socket.c b/net/tipc/socket.c
index 3220d5cb5b5d..ae45df060e3a 100644
--- a/net/tipc/socket.c
+++ b/net/tipc/socket.c
@@ -1375,7 +1375,7 @@ static int accept(struct socket *sock, struct socket *newsock, int flags)
         }
         buf = skb_peek(&sock->sk->sk_receive_queue);
 
-        res = tipc_create(sock->sk->sk_net, newsock, 0);
+        res = tipc_create(sock_net(sock->sk), newsock, 0);
         if (!res) {
                 struct tipc_sock *new_tsock = tipc_sk(newsock->sk);
                 struct tipc_portid id;