inet: add struct net argument to inet_bhashfn

Binding to some port in many namespaces may create too long
chains in bhash-es, so prepare the hashfn to take struct net
into account.

Signed-off-by: Pavel Emelyanov <xemul@openvz.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 7 insertions, 4 deletions

diff --git a/net/ipv4/inet_hashtables.c b/net/ipv4/inet_hashtables.c
index 2023d37b2708..dc1b78de8990 100644
--- a/net/ipv4/inet_hashtables.c
+++ b/net/ipv4/inet_hashtables.c
@@ -70,7 +70,8 @@ void inet_bind_hash(struct sock *sk, struct inet_bind_bucket *tb,
 static void __inet_put_port(struct sock *sk)
 {
         struct inet_hashinfo *hashinfo = sk->sk_prot->h.hashinfo;
-        const int bhash = inet_bhashfn(inet_sk(sk)->num, hashinfo->bhash_size);
+        const int bhash = inet_bhashfn(sock_net(sk), inet_sk(sk)->num,
+                        hashinfo->bhash_size);
         struct inet_bind_hashbucket *head = &hashinfo->bhash[bhash];
         struct inet_bind_bucket *tb;
 
@@ -95,7 +96,8 @@ EXPORT_SYMBOL(inet_put_port);
 void __inet_inherit_port(struct sock *sk, struct sock *child)
 {
         struct inet_hashinfo *table = sk->sk_prot->h.hashinfo;
-        const int bhash = inet_bhashfn(inet_sk(child)->num, table->bhash_size);
+        const int bhash = inet_bhashfn(sock_net(sk), inet_sk(child)->num,
+                        table->bhash_size);
         struct inet_bind_hashbucket *head = &table->bhash[bhash];
         struct inet_bind_bucket *tb;
 
@@ -438,7 +440,8 @@ int __inet_hash_connect(struct inet_timewait_death_row *death_row,
                 local_bh_disable();
                 for (i = 1; i <= remaining; i++) {
                         port = low + (i + offset) % remaining;
-                        head = &hinfo->bhash[inet_bhashfn(port, hinfo->bhash_size)];
+                        head = &hinfo->bhash[inet_bhashfn(net, port,
+                                        hinfo->bhash_size)];
                         spin_lock(&head->lock);
 
                         /* Does not bother with rcv_saddr checks,
@@ -493,7 +496,7 @@ ok:
                 goto out;
         }
 
-        head = &hinfo->bhash[inet_bhashfn(snum, hinfo->bhash_size)];
+        head = &hinfo->bhash[inet_bhashfn(net, snum, hinfo->bhash_size)];
         tb  = inet_csk(sk)->icsk_bind_hash;
         spin_lock_bh(&head->lock);
         if (sk_head(&tb->owners) == sk && !sk->sk_bind_node.next) {