[Bridge] [PATCH net-next 13/14] net: bridge: multicast: handle block pg delete for all cases

Nikolay Aleksandrov razor at blackwall.org
Wed Jan 20 14:52:02 UTC 2021


From: Nikolay Aleksandrov <nikolay at nvidia.com>

A block report can result in empty source and host sets for both include
and exclude groups so if there are no hosts left we can safely remove
the group. Pull the block group handling so it can cover both cases and
add a check if EHT requires the delete.

Signed-off-by: Nikolay Aleksandrov <nikolay at nvidia.com>
---
 net/bridge/br_multicast.c | 17 +++++++++--------
 1 file changed, 9 insertions(+), 8 deletions(-)

diff --git a/net/bridge/br_multicast.c b/net/bridge/br_multicast.c
index 9cfc004312ab..47afb1e11daf 100644
--- a/net/bridge/br_multicast.c
+++ b/net/bridge/br_multicast.c
@@ -2210,14 +2210,6 @@ static bool __grp_src_block_incl(struct net_bridge_port_group *pg, void *h_addr,
 	if (to_send)
 		__grp_src_query_marked_and_rexmit(pg);
 
-	if (pg->filter_mode == MCAST_INCLUDE && hlist_empty(&pg->src_list)) {
-		br_multicast_find_del_pg(pg->key.port->br, pg);
-		/* a notification has already been sent and we shouldn't access
-		 * pg after the delete thus we have to return false
-		 */
-		changed = false;
-	}
-
 	return changed;
 }
 
@@ -2279,6 +2271,15 @@ static bool br_multicast_block(struct net_bridge_port_group *pg, void *h_addr,
 		break;
 	}
 
+	if ((pg->filter_mode == MCAST_INCLUDE && hlist_empty(&pg->src_list)) ||
+	    br_multicast_eht_should_del_pg(pg)) {
+		br_multicast_find_del_pg(pg->key.port->br, pg);
+		/* a notification has already been sent and we shouldn't
+		 * access pg after the delete so we have to return false
+		 */
+		changed = false;
+	}
+
 	return changed;
 }
 
-- 
2.29.2



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