[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, 7 insertions, 7 deletions

diff --git a/net/ipv4/arp.c b/net/ipv4/arp.c
index 832473e30b36..3ce2e137e7bc 100644
--- a/net/ipv4/arp.c
+++ b/net/ipv4/arp.c
@@ -242,7 +242,7 @@ static int arp_constructor(struct neighbour *neigh)
                 return -EINVAL;
         }
 
-        neigh->type = inet_addr_type(dev->nd_net, addr);
+        neigh->type = inet_addr_type(dev_net(dev), addr);
 
         parms = in_dev->arp_parms;
         __neigh_parms_put(neigh->parms);
@@ -341,14 +341,14 @@ static void arp_solicit(struct neighbour *neigh, struct sk_buff *skb)
         switch (IN_DEV_ARP_ANNOUNCE(in_dev)) {
         default:
         case 0:         /* By default announce any local IP */
-                if (skb && inet_addr_type(dev->nd_net, ip_hdr(skb)->saddr) == RTN_LOCAL)
+                if (skb && inet_addr_type(dev_net(dev), ip_hdr(skb)->saddr) == RTN_LOCAL)
                         saddr = ip_hdr(skb)->saddr;
                 break;
         case 1:         /* Restrict announcements of saddr in same subnet */
                 if (!skb)
                         break;
                 saddr = ip_hdr(skb)->saddr;
-                if (inet_addr_type(dev->nd_net, saddr) == RTN_LOCAL) {
+                if (inet_addr_type(dev_net(dev), saddr) == RTN_LOCAL) {
                         /* saddr should be known to target */
                         if (inet_addr_onlink(in_dev, target, saddr))
                                 break;
@@ -424,7 +424,7 @@ static int arp_filter(__be32 sip, __be32 tip, struct net_device *dev)
         int flag = 0;
         /*unsigned long now; */
 
-        if (ip_route_output_key(dev->nd_net, &rt, &fl) < 0)
+        if (ip_route_output_key(dev_net(dev), &rt, &fl) < 0)
                 return 1;
         if (rt->u.dst.dev != dev) {
                 NET_INC_STATS_BH(LINUX_MIB_ARPFILTER);
@@ -477,7 +477,7 @@ int arp_find(unsigned char *haddr, struct sk_buff *skb)
 
         paddr = skb->rtable->rt_gateway;
 
-        if (arp_set_predefined(inet_addr_type(dev->nd_net, paddr), haddr, paddr, dev))
+        if (arp_set_predefined(inet_addr_type(dev_net(dev), paddr), haddr, paddr, dev))
                 return 0;
 
         n = __neigh_lookup(&arp_tbl, &paddr, dev, 1);
@@ -709,7 +709,7 @@ static int arp_process(struct sk_buff *skb)
         u16 dev_type = dev->type;
         int addr_type;
         struct neighbour *n;
-        struct net *net = dev->nd_net;
+        struct net *net = dev_net(dev);
 
         /* arp_rcv below verifies the ARP header and verifies the device
          * is ARP'able.
@@ -858,7 +858,7 @@ static int arp_process(struct sk_buff *skb)
 
         n = __neigh_lookup(&arp_tbl, &sip, dev, 0);
 
-        if (IPV4_DEVCONF_ALL(dev->nd_net, ARP_ACCEPT)) {
+        if (IPV4_DEVCONF_ALL(dev_net(dev), ARP_ACCEPT)) {
                 /* Unsolicited ARP is not accepted by default.
                    It is possible, that this option should be enabled for some
                    devices (strip is candidate)