[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/udp.c b/net/ipv4/udp.c
index b37581d..e2cd934 100644
--- a/net/ipv4/udp.c
+++ b/net/ipv4/udp.c
@@ -357,7 +357,7 @@
int harderr;
int err;
- sk = __udp4_lib_lookup(skb->dev->nd_net, iph->daddr, uh->dest,
+ sk = __udp4_lib_lookup(dev_net(skb->dev), iph->daddr, uh->dest,
iph->saddr, uh->source, skb->dev->ifindex, udptable);
if (sk == NULL) {
ICMP_INC_STATS_BH(ICMP_MIB_INERRORS);
@@ -1181,7 +1181,7 @@
if (rt->rt_flags & (RTCF_BROADCAST|RTCF_MULTICAST))
return __udp4_lib_mcast_deliver(skb, uh, saddr, daddr, udptable);
- sk = __udp4_lib_lookup(skb->dev->nd_net, saddr, uh->source, daddr,
+ sk = __udp4_lib_lookup(dev_net(skb->dev), saddr, uh->source, daddr,
uh->dest, inet_iif(skb), udptable);
if (sk != NULL) {