[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/sctp/ipv6.c b/net/sctp/ipv6.c
index dc71d0d83753..036bfcc8d15b 100644
--- a/net/sctp/ipv6.c
+++ b/net/sctp/ipv6.c
@@ -636,7 +636,7 @@ static struct sock *sctp_v6_create_accept_sk(struct sock *sk,
         struct ipv6_pinfo *newnp, *np = inet6_sk(sk);
         struct sctp6_sock *newsctp6sk;
 
-        newsk = sk_alloc(sk->sk_net, PF_INET6, GFP_KERNEL, sk->sk_prot);
+        newsk = sk_alloc(sock_net(sk), PF_INET6, GFP_KERNEL, sk->sk_prot);
         if (!newsk)
                 goto out;