[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>
diff --git a/net/ipv4/ip_gre.c b/net/ipv4/ip_gre.c
index f9ee844..50972b3 100644
--- a/net/ipv4/ip_gre.c
+++ b/net/ipv4/ip_gre.c
@@ -1190,7 +1190,7 @@
struct ip_tunnel *t = netdev_priv(dev);
if (ipv4_is_multicast(t->parms.iph.daddr) && t->mlink) {
struct in_device *in_dev;
- in_dev = inetdev_by_index(dev->nd_net, t->mlink);
+ in_dev = inetdev_by_index(dev_net(dev), t->mlink);
if (in_dev) {
ip_mc_dec_group(in_dev, t->parms.iph.daddr);
in_dev_put(in_dev);