From e10177abf842d0c40dfecc43bd57a0a762a2fccf Mon Sep 17 00:00:00 2001
From: Satish Ashok <sashok@cumulusnetworks.com>
Date: Wed, 15 Jul 2015 07:16:51 -0700
Subject: bridge: multicast: fix handling of temp and perm entries
When the bridge (or port) is brought down/up flush only temp entries and
leave the perm ones. Flush perm entries only when deleting the bridge
device or the associated port.
Signed-off-by: Satish Ashok <sashok@cumulusnetworks.com>
Signed-off-by: Nikolay Aleksandrov <nikolay@cumulusnetworks.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---
net/bridge/br_multicast.c | 27 ++++++++++++++++++++-------
1 file changed, 20 insertions(+), 7 deletions(-)
(limited to 'net/bridge/br_multicast.c')
diff --git a/net/bridge/br_multicast.c b/net/bridge/br_multicast.c
index 55903d91d0a8..0dd3cd90962c 100644
--- a/net/bridge/br_multicast.c
+++ b/net/bridge/br_multicast.c
@@ -916,6 +916,15 @@ void br_multicast_add_port(struct net_bridge_port *port)
void br_multicast_del_port(struct net_bridge_port *port)
{
+ struct net_bridge *br = port->br;
+ struct net_bridge_port_group *pg;
+ struct hlist_node *n;
+
+ /* Take care of the remaining groups, only perm ones should be left */
+ spin_lock_bh(&br->multicast_lock);
+ hlist_for_each_entry_safe(pg, n, &port->mglist, mglist)
+ br_multicast_del_pg(br, pg);
+ spin_unlock_bh(&br->multicast_lock);
del_timer_sync(&port->multicast_router_timer);
}
@@ -955,7 +964,8 @@ void br_multicast_disable_port(struct net_bridge_port *port)
spin_lock(&br->multicast_lock);
hlist_for_each_entry_safe(pg, n, &port->mglist, mglist)
- br_multicast_del_pg(br, pg);
+ if (pg->state == MDB_TEMPORARY)
+ br_multicast_del_pg(br, pg);
if (!hlist_unhashed(&port->rlist))
hlist_del_init_rcu(&port->rlist);
@@ -1732,12 +1742,6 @@ void br_multicast_open(struct net_bridge *br)
void br_multicast_stop(struct net_bridge *br)
{
- struct net_bridge_mdb_htable *mdb;
- struct net_bridge_mdb_entry *mp;
- struct hlist_node *n;
- u32 ver;
- int i;
-
del_timer_sync(&br->multicast_router_timer);
del_timer_sync(&br->ip4_other_query.timer);
del_timer_sync(&br->ip4_own_query.timer);
@@ -1745,6 +1749,15 @@ void br_multicast_stop(struct net_bridge *br)
del_timer_sync(&br->ip6_other_query.timer);
del_timer_sync(&br->ip6_own_query.timer);
#endif
+}
+
+void br_multicast_dev_del(struct net_bridge *br)
+{
+ struct net_bridge_mdb_htable *mdb;
+ struct net_bridge_mdb_entry *mp;
+ struct hlist_node *n;
+ u32 ver;
+ int i;
spin_lock_bh(&br->multicast_lock);
mdb = mlock_dereference(br->mdb, br);
--
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