[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/ipv6/fib6_rules.c b/net/ipv6/fib6_rules.c
index e7a7fe26cebf..cac580749ebe 100644
--- a/net/ipv6/fib6_rules.c
+++ b/net/ipv6/fib6_rules.c
@@ -154,7 +154,7 @@ static int fib6_rule_configure(struct fib_rule *rule, struct sk_buff *skb,
                                struct nlattr **tb)
 {
         int err = -EINVAL;
-        struct net *net = skb->sk->sk_net;
+        struct net *net = sock_net(skb->sk);
         struct fib6_rule *rule6 = (struct fib6_rule *) rule;
 
         if (rule->action == FR_ACT_TO_TBL) {