[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, 2 insertions, 2 deletions

diff --git a/net/ipv4/ipmr.c b/net/ipv4/ipmr.c
index e54bc1364473..11700a4dcd95 100644
--- a/net/ipv4/ipmr.c
+++ b/net/ipv4/ipmr.c
@@ -849,7 +849,7 @@ static void mrtsock_destruct(struct sock *sk)
 {
         rtnl_lock();
         if (sk == mroute_socket) {
-                IPV4_DEVCONF_ALL(sk->sk_net, MC_FORWARDING)--;
+                IPV4_DEVCONF_ALL(sock_net(sk), MC_FORWARDING)--;
 
                 write_lock_bh(&mrt_lock);
                 mroute_socket=NULL;
@@ -898,7 +898,7 @@ int ip_mroute_setsockopt(struct sock *sk,int optname,char __user *optval,int opt
                         mroute_socket=sk;
                         write_unlock_bh(&mrt_lock);
 
-                        IPV4_DEVCONF_ALL(sk->sk_net, MC_FORWARDING)++;
+                        IPV4_DEVCONF_ALL(sock_net(sk), MC_FORWARDING)++;
                 }
                 rtnl_unlock();
                 return ret;