[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/ipv4/ip_fragment.c b/net/ipv4/ip_fragment.c
index 8b448c4b9080..fcb60e76b234 100644
--- a/net/ipv4/ip_fragment.c
+++ b/net/ipv4/ip_fragment.c
@@ -571,7 +571,7 @@ int ip_defrag(struct sk_buff *skb, u32 user)
 
         IP_INC_STATS_BH(IPSTATS_MIB_REASMREQDS);
 
-        net = skb->dev ? skb->dev->nd_net : skb->dst->dev->nd_net;
+        net = skb->dev ? dev_net(skb->dev) : dev_net(skb->dst->dev);
         /* Start by cleaning up the memory. */
         if (atomic_read(&net->ipv4.frags.mem) > net->ipv4.frags.high_thresh)
                 ip_evictor(net);