[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, 5 insertions, 5 deletions

diff --git a/net/ipv4/devinet.c b/net/ipv4/devinet.c
index 4a10dbbbe0a1..823c724a8593 100644
--- a/net/ipv4/devinet.c
+++ b/net/ipv4/devinet.c
@@ -165,7 +165,7 @@ static struct in_device *inetdev_init(struct net_device *dev)
         if (!in_dev)
                 goto out;
         INIT_RCU_HEAD(&in_dev->rcu_head);
-        memcpy(&in_dev->cnf, dev->nd_net->ipv4.devconf_dflt,
+        memcpy(&in_dev->cnf, dev_net(dev)->ipv4.devconf_dflt,
                         sizeof(in_dev->cnf));
         in_dev->cnf.sysctl = NULL;
         in_dev->dev = dev;
@@ -872,7 +872,7 @@ __be32 inet_select_addr(const struct net_device *dev, __be32 dst, int scope)
 {
         __be32 addr = 0;
         struct in_device *in_dev;
-        struct net *net = dev->nd_net;
+        struct net *net = dev_net(dev);
 
         rcu_read_lock();
         in_dev = __in_dev_get_rcu(dev);
@@ -974,7 +974,7 @@ __be32 inet_confirm_addr(struct in_device *in_dev,
         if (scope != RT_SCOPE_LINK)
                 return confirm_addr_indev(in_dev, dst, local, scope);
 
-        net = in_dev->dev->nd_net;
+        net = dev_net(in_dev->dev);
         read_lock(&dev_base_lock);
         rcu_read_lock();
         for_each_netdev(net, dev) {
@@ -1203,7 +1203,7 @@ static void rtmsg_ifa(int event, struct in_ifaddr* ifa, struct nlmsghdr *nlh,
         int err = -ENOBUFS;
         struct net *net;
 
-        net = ifa->ifa_dev->dev->nd_net;
+        net = dev_net(ifa->ifa_dev->dev);
         skb = nlmsg_new(inet_nlmsg_size(), GFP_KERNEL);
         if (skb == NULL)
                 goto errout;
@@ -1517,7 +1517,7 @@ static void devinet_sysctl_register(struct in_device *idev)
 {
         neigh_sysctl_register(idev->dev, idev->arp_parms, NET_IPV4,
                         NET_IPV4_NEIGH, "ipv4", NULL, NULL);
-        __devinet_sysctl_register(idev->dev->nd_net, idev->dev->name,
+        __devinet_sysctl_register(dev_net(idev->dev), idev->dev->name,
                         idev->dev->ifindex, &idev->cnf);
 }