[NET] NETNS: Omit net_device->nd_net without CONFIG_NET_NS.

Introduce per-net_device inlines: dev_net(), dev_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/xfrm6_policy.c b/net/ipv6/xfrm6_policy.c
index d92d1fceb8cf..8f1e0543b3c4 100644
--- a/net/ipv6/xfrm6_policy.c
+++ b/net/ipv6/xfrm6_policy.c
@@ -247,7 +247,7 @@ static void xfrm6_dst_ifdown(struct dst_entry *dst, struct net_device *dev,
         xdst = (struct xfrm_dst *)dst;
         if (xdst->u.rt6.rt6i_idev->dev == dev) {
                 struct inet6_dev *loopback_idev =
-                        in6_dev_get(dev->nd_net->loopback_dev);
+                        in6_dev_get(dev_net(dev)->loopback_dev);
                 BUG_ON(!loopback_idev);
 
                 do {