[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, 4 insertions, 4 deletions

diff --git a/net/packet/af_packet.c b/net/packet/af_packet.c
index a56ed2120e07..baa290d3444a 100644
--- a/net/packet/af_packet.c
+++ b/net/packet/af_packet.c
@@ -263,7 +263,7 @@ static int packet_rcv_spkt(struct sk_buff *skb, struct net_device *dev,  struct
         if (skb->pkt_type == PACKET_LOOPBACK)
                 goto out;
 
-        if (dev->nd_net != sk->sk_net)
+        if (dev_net(dev) != sk->sk_net)
                 goto out;
 
         if ((skb = skb_share_check(skb, GFP_ATOMIC)) == NULL)
@@ -451,7 +451,7 @@ static int packet_rcv(struct sk_buff *skb, struct net_device *dev, struct packet
         sk = pt->af_packet_priv;
         po = pkt_sk(sk);
 
-        if (dev->nd_net != sk->sk_net)
+        if (dev_net(dev) != sk->sk_net)
                 goto drop;
 
         skb->dev = dev;
@@ -568,7 +568,7 @@ static int tpacket_rcv(struct sk_buff *skb, struct net_device *dev, struct packe
         sk = pt->af_packet_priv;
         po = pkt_sk(sk);
 
-        if (dev->nd_net != sk->sk_net)
+        if (dev_net(dev) != sk->sk_net)
                 goto drop;
 
         if (dev->header_ops) {
@@ -1450,7 +1450,7 @@ static int packet_notifier(struct notifier_block *this, unsigned long msg, void
         struct sock *sk;
         struct hlist_node *node;
         struct net_device *dev = data;
-        struct net *net = dev->nd_net;
+        struct net *net = dev_net(dev);
 
         read_lock(&net->packet.sklist_lock);
         sk_for_each(sk, node, &net->packet.sklist) {