Merge branch 'core/xen' into x86/xen

[safe/jmp/linux-2.6] / net / ipv4 / inet_timewait_sock.c

diff --git a/net/ipv4/inet_timewait_sock.c b/net/ipv4/inet_timewait_sock.c
index 717c411..743f011 100644 (file)
--- a/net/ipv4/inet_timewait_sock.c
+++ b/net/ipv4/inet_timewait_sock.c
@@ -32,7 +32,8 @@ static void __inet_twsk_kill(struct inet_timewait_sock *tw,
        write_unlock(lock);
 
        /* Disassociate with bind bucket. */
-       bhead = &hashinfo->bhash[inet_bhashfn(tw->tw_num, hashinfo->bhash_size)];
+       bhead = &hashinfo->bhash[inet_bhashfn(twsk_net(tw), tw->tw_num,
+                       hashinfo->bhash_size)];
        spin_lock(&bhead->lock);
        tb = tw->tw_tb;
        __hlist_del(&tw->tw_bind_node);
@@ -57,6 +58,7 @@ void inet_twsk_put(struct inet_timewait_sock *tw)
                printk(KERN_DEBUG "%s timewait_sock %p released\n",
                       tw->tw_prot->name, tw);
 #endif
+               release_net(twsk_net(tw));
                kmem_cache_free(tw->tw_prot->twsk_prot->twsk_slab, tw);
                module_put(owner);
        }
@@ -80,10 +82,11 @@ void __inet_twsk_hashdance(struct inet_timewait_sock *tw, struct sock *sk,
           Note, that any socket with inet->num != 0 MUST be bound in
           binding cache, even if it is closed.
         */
-       bhead = &hashinfo->bhash[inet_bhashfn(inet->num, hashinfo->bhash_size)];
+       bhead = &hashinfo->bhash[inet_bhashfn(twsk_net(tw), inet->num,
+                       hashinfo->bhash_size)];
        spin_lock(&bhead->lock);
        tw->tw_tb = icsk->icsk_bind_hash;
-       BUG_TRAP(icsk->icsk_bind_hash);
+       WARN_ON(!icsk->icsk_bind_hash);
        inet_twsk_add_bind_node(tw, &tw->tw_tb->owners);
        spin_unlock(&bhead->lock);
 
@@ -91,7 +94,7 @@ void __inet_twsk_hashdance(struct inet_timewait_sock *tw, struct sock *sk,
 
        /* Step 2: Remove SK from established hash. */
        if (__sk_del_node_init(sk))
-               sock_prot_inuse_add(sk->sk_prot, -1);
+               sock_prot_inuse_add(sock_net(sk), sk->sk_prot, -1);
 
        /* Step 3: Hash TW into TIMEWAIT chain. */
        inet_twsk_add_node(tw, &ehead->twchain);
@@ -124,7 +127,7 @@ struct inet_timewait_sock *inet_twsk_alloc(const struct sock *sk, const int stat
                tw->tw_hash         = sk->sk_hash;
                tw->tw_ipv6only     = 0;
                tw->tw_prot         = sk->sk_prot_creator;
-               tw->tw_net          = sk->sk_net;
+               twsk_net_set(tw, hold_net(sock_net(sk)));
                atomic_set(&tw->tw_refcnt, 1);
                inet_twsk_dead_node_init(tw);
                __module_get(tw->tw_prot->owner);
@@ -157,6 +160,9 @@ rescan:
                __inet_twsk_del_dead_node(tw);
                spin_unlock(&twdr->death_lock);
                __inet_twsk_kill(tw, twdr->hashinfo);
+#ifdef CONFIG_NET_NS
+               NET_INC_STATS_BH(twsk_net(tw), LINUX_MIB_TIMEWAITED);
+#endif
                inet_twsk_put(tw);
                killed++;
                spin_lock(&twdr->death_lock);
@@ -175,8 +181,9 @@ rescan:
        }
 
        twdr->tw_count -= killed;
-       NET_ADD_STATS_BH(LINUX_MIB_TIMEWAITED, killed);
-
+#ifndef CONFIG_NET_NS
+       NET_ADD_STATS_BH(&init_net, LINUX_MIB_TIMEWAITED, killed);
+#endif
        return ret;
 }
 
@@ -369,6 +376,9 @@ void inet_twdr_twcal_tick(unsigned long data)
                                                       &twdr->twcal_row[slot]) {
                                __inet_twsk_del_dead_node(tw);
                                __inet_twsk_kill(tw, twdr->hashinfo);
+#ifdef CONFIG_NET_NS
+                               NET_INC_STATS_BH(twsk_net(tw), LINUX_MIB_TIMEWAITKILLED);
+#endif
                                inet_twsk_put(tw);
                                killed++;
                        }
@@ -392,8 +402,45 @@ void inet_twdr_twcal_tick(unsigned long data)
 out:
        if ((twdr->tw_count -= killed) == 0)
                del_timer(&twdr->tw_timer);
-       NET_ADD_STATS_BH(LINUX_MIB_TIMEWAITKILLED, killed);
+#ifndef CONFIG_NET_NS
+       NET_ADD_STATS_BH(&init_net, LINUX_MIB_TIMEWAITKILLED, killed);
+#endif
        spin_unlock(&twdr->death_lock);
 }
 
 EXPORT_SYMBOL_GPL(inet_twdr_twcal_tick);
+
+void inet_twsk_purge(struct net *net, struct inet_hashinfo *hashinfo,
+                    struct inet_timewait_death_row *twdr, int family)
+{
+       struct inet_timewait_sock *tw;
+       struct sock *sk;
+       struct hlist_node *node;
+       int h;
+
+       local_bh_disable();
+       for (h = 0; h < (hashinfo->ehash_size); h++) {
+               struct inet_ehash_bucket *head =
+                       inet_ehash_bucket(hashinfo, h);
+               rwlock_t *lock = inet_ehash_lockp(hashinfo, h);
+restart:
+               write_lock(lock);
+               sk_for_each(sk, node, &head->twchain) {
+
+                       tw = inet_twsk(sk);
+                       if (!net_eq(twsk_net(tw), net) ||
+                           tw->tw_family != family)
+                               continue;
+
+                       atomic_inc(&tw->tw_refcnt);
+                       write_unlock(lock);
+                       inet_twsk_deschedule(tw, twdr);
+                       inet_twsk_put(tw);
+
+                       goto restart;
+               }
+               write_unlock(lock);
+       }
+       local_bh_enable();
+}
+EXPORT_SYMBOL_GPL(inet_twsk_purge);