[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/ipv4/ipconfig.c b/net/ipv4/ipconfig.c
index 96138b128de8..08e8fb60d315 100644
--- a/net/ipv4/ipconfig.c
+++ b/net/ipv4/ipconfig.c
@@ -434,7 +434,7 @@ ic_rarp_recv(struct sk_buff *skb, struct net_device *dev, struct packet_type *pt
         unsigned char *sha, *tha;               /* s for "source", t for "target" */
         struct ic_device *d;
 
-        if (dev->nd_net != &init_net)
+        if (dev_net(dev) != &init_net)
                 goto drop;
 
         if ((skb = skb_share_check(skb, GFP_ATOMIC)) == NULL)
@@ -854,7 +854,7 @@ static int __init ic_bootp_recv(struct sk_buff *skb, struct net_device *dev, str
         struct ic_device *d;
         int len, ext_len;
 
-        if (dev->nd_net != &init_net)
+        if (dev_net(dev) != &init_net)
                 goto drop;
 
         /* Perform verifications before taking the lock.  */