[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, 2 insertions, 2 deletions

diff --git a/net/can/af_can.c b/net/can/af_can.c
index 36b9f22ed83a..2759b76f731c 100644
--- a/net/can/af_can.c
+++ b/net/can/af_can.c
@@ -599,7 +599,7 @@ static int can_rcv(struct sk_buff *skb, struct net_device *dev,
         struct dev_rcv_lists *d;
         int matches;
 
-        if (dev->type != ARPHRD_CAN || dev->nd_net != &init_net) {
+        if (dev->type != ARPHRD_CAN || dev_net(dev) != &init_net) {
                 kfree_skb(skb);
                 return 0;
         }
@@ -710,7 +710,7 @@ static int can_notifier(struct notifier_block *nb, unsigned long msg,
         struct net_device *dev = (struct net_device *)data;
         struct dev_rcv_lists *d;
 
-        if (dev->nd_net != &init_net)
+        if (dev_net(dev) != &init_net)
                 return NOTIFY_DONE;
 
         if (dev->type != ARPHRD_CAN)