[NET] NETNS: Omit sock->sk_net without CONFIG_NET_NS.

Introduce per-sock inlines: sock_net(), sock_net_set()
and per-inet_timewait_sock inlines: twsk_net(), twsk_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, 14 insertions, 14 deletions

diff --git a/net/packet/af_packet.c b/net/packet/af_packet.c
index baa290d3444a..25070240d4ae 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_net(dev) != sk->sk_net)
+        if (dev_net(dev) != sock_net(sk))
                 goto out;
 
         if ((skb = skb_share_check(skb, GFP_ATOMIC)) == NULL)
@@ -337,7 +337,7 @@ static int packet_sendmsg_spkt(struct kiocb *iocb, struct socket *sock,
          */
 
         saddr->spkt_device[13] = 0;
-        dev = dev_get_by_name(sk->sk_net, saddr->spkt_device);
+        dev = dev_get_by_name(sock_net(sk), saddr->spkt_device);
         err = -ENODEV;
         if (dev == NULL)
                 goto out_unlock;
@@ -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_net(dev) != sk->sk_net)
+        if (dev_net(dev) != sock_net(sk))
                 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_net(dev) != sk->sk_net)
+        if (dev_net(dev) != sock_net(sk))
                 goto drop;
 
         if (dev->header_ops) {
@@ -728,7 +728,7 @@ static int packet_sendmsg(struct kiocb *iocb, struct socket *sock,
         }
 
 
-        dev = dev_get_by_index(sk->sk_net, ifindex);
+        dev = dev_get_by_index(sock_net(sk), ifindex);
         err = -ENXIO;
         if (dev == NULL)
                 goto out_unlock;
@@ -800,7 +800,7 @@ static int packet_release(struct socket *sock)
         if (!sk)
                 return 0;
 
-        net = sk->sk_net;
+        net = sock_net(sk);
         po = pkt_sk(sk);
 
         write_lock_bh(&net->packet.sklist_lock);
@@ -914,7 +914,7 @@ static int packet_bind_spkt(struct socket *sock, struct sockaddr *uaddr, int add
                 return -EINVAL;
         strlcpy(name,uaddr->sa_data,sizeof(name));
 
-        dev = dev_get_by_name(sk->sk_net, name);
+        dev = dev_get_by_name(sock_net(sk), name);
         if (dev) {
                 err = packet_do_bind(sk, dev, pkt_sk(sk)->num);
                 dev_put(dev);
@@ -941,7 +941,7 @@ static int packet_bind(struct socket *sock, struct sockaddr *uaddr, int addr_len
 
         if (sll->sll_ifindex) {
                 err = -ENODEV;
-                dev = dev_get_by_index(sk->sk_net, sll->sll_ifindex);
+                dev = dev_get_by_index(sock_net(sk), sll->sll_ifindex);
                 if (dev == NULL)
                         goto out;
         }
@@ -1135,7 +1135,7 @@ static int packet_getname_spkt(struct socket *sock, struct sockaddr *uaddr,
                 return -EOPNOTSUPP;
 
         uaddr->sa_family = AF_PACKET;
-        dev = dev_get_by_index(sk->sk_net, pkt_sk(sk)->ifindex);
+        dev = dev_get_by_index(sock_net(sk), pkt_sk(sk)->ifindex);
         if (dev) {
                 strlcpy(uaddr->sa_data, dev->name, 15);
                 dev_put(dev);
@@ -1160,7 +1160,7 @@ static int packet_getname(struct socket *sock, struct sockaddr *uaddr,
         sll->sll_family = AF_PACKET;
         sll->sll_ifindex = po->ifindex;
         sll->sll_protocol = po->num;
-        dev = dev_get_by_index(sk->sk_net, po->ifindex);
+        dev = dev_get_by_index(sock_net(sk), po->ifindex);
         if (dev) {
                 sll->sll_hatype = dev->type;
                 sll->sll_halen = dev->addr_len;
@@ -1212,7 +1212,7 @@ static int packet_mc_add(struct sock *sk, struct packet_mreq_max *mreq)
         rtnl_lock();
 
         err = -ENODEV;
-        dev = __dev_get_by_index(sk->sk_net, mreq->mr_ifindex);
+        dev = __dev_get_by_index(sock_net(sk), mreq->mr_ifindex);
         if (!dev)
                 goto done;
 
@@ -1266,7 +1266,7 @@ static int packet_mc_drop(struct sock *sk, struct packet_mreq_max *mreq)
                         if (--ml->count == 0) {
                                 struct net_device *dev;
                                 *mlp = ml->next;
-                                dev = dev_get_by_index(sk->sk_net, ml->ifindex);
+                                dev = dev_get_by_index(sock_net(sk), ml->ifindex);
                                 if (dev) {
                                         packet_dev_mc(dev, ml, -1);
                                         dev_put(dev);
@@ -1294,7 +1294,7 @@ static void packet_flush_mclist(struct sock *sk)
                 struct net_device *dev;
 
                 po->mclist = ml->next;
-                if ((dev = dev_get_by_index(sk->sk_net, ml->ifindex)) != NULL) {
+                if ((dev = dev_get_by_index(sock_net(sk), ml->ifindex)) != NULL) {
                         packet_dev_mc(dev, ml, -1);
                         dev_put(dev);
                 }
@@ -1540,7 +1540,7 @@ static int packet_ioctl(struct socket *sock, unsigned int cmd,
                 case SIOCGIFDSTADDR:
                 case SIOCSIFDSTADDR:
                 case SIOCSIFFLAGS:
-                        if (sk->sk_net != &init_net)
+                        if (sock_net(sk) != &init_net)
                                 return -ENOIOCTLCMD;
                         return inet_dgram_ops.ioctl(sock, cmd, arg);
 #endif