bridge: Do not send queries on multicast group leaves

[pandora-kernel.git] / net / bridge / br_multicast.c

diff --git a/net/bridge/br_multicast.c b/net/bridge/br_multicast.c
index 995cbe0..5ac1811 100644 (file)
--- a/net/bridge/br_multicast.c
+++ b/net/bridge/br_multicast.c
@@ -241,7 +241,6 @@ static void br_multicast_group_expired(unsigned long data)
        hlist_del_rcu(&mp->hlist[mdb->ver]);
        mdb->size--;
 
-       del_timer(&mp->query_timer);
        call_rcu_bh(&mp->rcu, br_multicast_free_group);
 
 out:
@@ -271,7 +270,6 @@ static void br_multicast_del_pg(struct net_bridge *br,
                rcu_assign_pointer(*pp, p->next);
                hlist_del_init(&p->mglist);
                del_timer(&p->timer);
-               del_timer(&p->query_timer);
                call_rcu_bh(&p->rcu, br_multicast_free_pg);
 
                if (!mp->ports && !mp->mglist &&
@@ -446,8 +444,11 @@ static struct sk_buff *br_ip6_multicast_alloc_query(struct net_bridge *br,
        ip6h->nexthdr = IPPROTO_HOPOPTS;
        ip6h->hop_limit = 1;
        ipv6_addr_set(&ip6h->daddr, htonl(0xff020000), 0, 0, htonl(1));
-       ipv6_dev_get_saddr(dev_net(br->dev), br->dev, &ip6h->daddr, 0,
-                          &ip6h->saddr);
+       if (ipv6_dev_get_saddr(dev_net(br->dev), br->dev, &ip6h->daddr, 0,
+                              &ip6h->saddr)) {
+               kfree_skb(skb);
+               return NULL;
+       }
        ipv6_eth_mc_map(&ip6h->daddr, eth->h_dest);
 
        hopopt = (u8 *)(ip6h + 1);
@@ -504,74 +505,6 @@ static struct sk_buff *br_multicast_alloc_query(struct net_bridge *br,
        return NULL;
 }
 
-static void br_multicast_send_group_query(struct net_bridge_mdb_entry *mp)
-{
-       struct net_bridge *br = mp->br;
-       struct sk_buff *skb;
-
-       skb = br_multicast_alloc_query(br, &mp->addr);
-       if (!skb)
-               goto timer;
-
-       netif_rx(skb);
-
-timer:
-       if (++mp->queries_sent < br->multicast_last_member_count)
-               mod_timer(&mp->query_timer,
-                         jiffies + br->multicast_last_member_interval);
-}
-
-static void br_multicast_group_query_expired(unsigned long data)
-{
-       struct net_bridge_mdb_entry *mp = (void *)data;
-       struct net_bridge *br = mp->br;
-
-       spin_lock(&br->multicast_lock);
-       if (!netif_running(br->dev) || !mp->mglist ||
-           mp->queries_sent >= br->multicast_last_member_count)
-               goto out;
-
-       br_multicast_send_group_query(mp);
-
-out:
-       spin_unlock(&br->multicast_lock);
-}
-
-static void br_multicast_send_port_group_query(struct net_bridge_port_group *pg)
-{
-       struct net_bridge_port *port = pg->port;
-       struct net_bridge *br = port->br;
-       struct sk_buff *skb;
-
-       skb = br_multicast_alloc_query(br, &pg->addr);
-       if (!skb)
-               goto timer;
-
-       br_deliver(port, skb);
-
-timer:
-       if (++pg->queries_sent < br->multicast_last_member_count)
-               mod_timer(&pg->query_timer,
-                         jiffies + br->multicast_last_member_interval);
-}
-
-static void br_multicast_port_group_query_expired(unsigned long data)
-{
-       struct net_bridge_port_group *pg = (void *)data;
-       struct net_bridge_port *port = pg->port;
-       struct net_bridge *br = port->br;
-
-       spin_lock(&br->multicast_lock);
-       if (!netif_running(br->dev) || hlist_unhashed(&pg->mglist) ||
-           pg->queries_sent >= br->multicast_last_member_count)
-               goto out;
-
-       br_multicast_send_port_group_query(pg);
-
-out:
-       spin_unlock(&br->multicast_lock);
-}
-
 static struct net_bridge_mdb_entry *br_multicast_get_group(
        struct net_bridge *br, struct net_bridge_port *port,
        struct br_ip *group, int hash)
@@ -687,8 +620,6 @@ rehash:
        mp->addr = *group;
        setup_timer(&mp->timer, br_multicast_group_expired,
                    (unsigned long)mp);
-       setup_timer(&mp->query_timer, br_multicast_group_query_expired,
-                   (unsigned long)mp);
 
        hlist_add_head_rcu(&mp->hlist[mdb->ver], &mdb->mhash[hash]);
        mdb->size++;
@@ -743,8 +674,6 @@ static int br_multicast_add_group(struct net_bridge *br,
        hlist_add_head(&p->mglist, &port->mglist);
        setup_timer(&p->timer, br_multicast_port_group_expired,
                    (unsigned long)p);
-       setup_timer(&p->query_timer, br_multicast_port_group_query_expired,
-                   (unsigned long)p);
 
        rcu_assign_pointer(*pp, p);
 
@@ -1288,9 +1217,6 @@ static void br_multicast_leave_group(struct net_bridge *br,
                     time_after(mp->timer.expires, time) :
                     try_to_del_timer_sync(&mp->timer) >= 0)) {
                        mod_timer(&mp->timer, time);
-
-                       mp->queries_sent = 0;
-                       mod_timer(&mp->query_timer, now);
                }
 
                goto out;
@@ -1307,9 +1233,6 @@ static void br_multicast_leave_group(struct net_bridge *br,
                     time_after(p->timer.expires, time) :
                     try_to_del_timer_sync(&p->timer) >= 0)) {
                        mod_timer(&p->timer, time);
-
-                       p->queries_sent = 0;
-                       mod_timer(&p->query_timer, now);
                }
 
                break;
@@ -1501,6 +1424,8 @@ static int br_multicast_ipv6_rcv(struct net_bridge *br,
 
        __skb_pull(skb2, offset);
        skb_reset_transport_header(skb2);
+       skb_postpull_rcsum(skb2, skb_network_header(skb2),
+                          skb_network_header_len(skb2));
 
        icmp6_type = icmp6_hdr(skb2)->icmp6_type;
 
@@ -1675,7 +1600,6 @@ void br_multicast_stop(struct net_bridge *br)
                hlist_for_each_entry_safe(mp, p, n, &mdb->mhash[i],
                                          hlist[ver]) {
                        del_timer(&mp->timer);
-                       del_timer(&mp->query_timer);
                        call_rcu_bh(&mp->rcu, br_multicast_free_group);
                }
        }
@@ -1770,7 +1694,7 @@ int br_multicast_toggle(struct net_bridge *br, unsigned long val)
        int err = 0;
        struct net_bridge_mdb_htable *mdb;
 
-       spin_lock(&br->multicast_lock);
+       spin_lock_bh(&br->multicast_lock);
        if (br->multicast_disabled == !val)
                goto unlock;
 
@@ -1806,7 +1730,7 @@ rollback:
        }
 
 unlock:
-       spin_unlock(&br->multicast_lock);
+       spin_unlock_bh(&br->multicast_lock);
 
        return err;
 }