[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, 10 insertions, 10 deletions

diff --git a/net/unix/af_unix.c b/net/unix/af_unix.c
index ae584356852c..cb9d0cb5f270 100644
--- a/net/unix/af_unix.c
+++ b/net/unix/af_unix.c
@@ -252,7 +252,7 @@ static struct sock *__unix_find_socket_byname(struct net *net,
         sk_for_each(s, node, &unix_socket_table[hash ^ type]) {
                 struct unix_sock *u = unix_sk(s);
 
-                if (s->sk_net != net)
+                if (sock_net(s) != net)
                         continue;
 
                 if (u->addr->len == len &&
@@ -289,7 +289,7 @@ static struct sock *unix_find_socket_byinode(struct net *net, struct inode *i)
                     &unix_socket_table[i->i_ino & (UNIX_HASH_SIZE - 1)]) {
                 struct dentry *dentry = unix_sk(s)->dentry;
 
-                if (s->sk_net != net)
+                if (sock_net(s) != net)
                         continue;
 
                 if(dentry && dentry->d_inode == i)
@@ -654,7 +654,7 @@ static int unix_release(struct socket *sock)
 static int unix_autobind(struct socket *sock)
 {
         struct sock *sk = sock->sk;
-        struct net *net = sk->sk_net;
+        struct net *net = sock_net(sk);
         struct unix_sock *u = unix_sk(sk);
         static u32 ordernum = 1;
         struct unix_address * addr;
@@ -758,7 +758,7 @@ fail:
 static int unix_bind(struct socket *sock, struct sockaddr *uaddr, int addr_len)
 {
         struct sock *sk = sock->sk;
-        struct net *net = sk->sk_net;
+        struct net *net = sock_net(sk);
         struct unix_sock *u = unix_sk(sk);
         struct sockaddr_un *sunaddr=(struct sockaddr_un *)uaddr;
         struct dentry * dentry = NULL;
@@ -899,7 +899,7 @@ static int unix_dgram_connect(struct socket *sock, struct sockaddr *addr,
                               int alen, int flags)
 {
         struct sock *sk = sock->sk;
-        struct net *net = sk->sk_net;
+        struct net *net = sock_net(sk);
         struct sockaddr_un *sunaddr=(struct sockaddr_un*)addr;
         struct sock *other;
         unsigned hash;
@@ -996,7 +996,7 @@ static int unix_stream_connect(struct socket *sock, struct sockaddr *uaddr,
 {
         struct sockaddr_un *sunaddr=(struct sockaddr_un *)uaddr;
         struct sock *sk = sock->sk;
-        struct net *net = sk->sk_net;
+        struct net *net = sock_net(sk);
         struct unix_sock *u = unix_sk(sk), *newu, *otheru;
         struct sock *newsk = NULL;
         struct sock *other = NULL;
@@ -1025,7 +1025,7 @@ static int unix_stream_connect(struct socket *sock, struct sockaddr *uaddr,
         err = -ENOMEM;
 
         /* create new sock for complete connection */
-        newsk = unix_create1(sk->sk_net, NULL);
+        newsk = unix_create1(sock_net(sk), NULL);
         if (newsk == NULL)
                 goto out;
 
@@ -1312,7 +1312,7 @@ static int unix_dgram_sendmsg(struct kiocb *kiocb, struct socket *sock,
 {
         struct sock_iocb *siocb = kiocb_to_siocb(kiocb);
         struct sock *sk = sock->sk;
-        struct net *net = sk->sk_net;
+        struct net *net = sock_net(sk);
         struct unix_sock *u = unix_sk(sk);
         struct sockaddr_un *sunaddr=msg->msg_name;
         struct sock *other = NULL;
@@ -2022,7 +2022,7 @@ static struct sock *unix_seq_idx(struct unix_iter_state *iter, loff_t pos)
         struct sock *s;
 
         for (s = first_unix_socket(&iter->i); s; s = next_unix_socket(&iter->i, s)) {
-                if (s->sk_net != iter->p.net)
+                if (sock_net(s) != iter->p.net)
                         continue;
                 if (off == pos)
                         return s;
@@ -2050,7 +2050,7 @@ static void *unix_seq_next(struct seq_file *seq, void *v, loff_t *pos)
                 sk = first_unix_socket(&iter->i);
         else
                 sk = next_unix_socket(&iter->i, sk);
-        while (sk && (sk->sk_net != iter->p.net))
+        while (sk && (sock_net(sk) != iter->p.net))
                 sk = next_unix_socket(&iter->i, sk);
         return sk;
 }