[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/ipv6/ip6_output.c b/net/ipv6/ip6_output.c
index 556300f..a8b4da2 100644
--- a/net/ipv6/ip6_output.c
+++ b/net/ipv6/ip6_output.c
@@ -910,7 +910,7 @@
struct dst_entry **dst, struct flowi *fl)
{
int err;
- struct net *net = sk->sk_net;
+ struct net *net = sock_net(sk);
if (*dst == NULL)
*dst = ip6_route_output(net, sk, fl);