[PATCH net-next v4 05/14] net: bridge: mcast: track active state, foreign IGMP/MLD querier disappearance
Linus Lüssing <[email protected]>
| Newsgroups | gmane.linux.network.bridge,gmane.linux.network,gmane.linux.kernel |
|---|---|
| Message-ID | <[email protected]> |
This change ensures that the new multicast active state variable is unset again after a foreign IGMP/MLD querier has disappeared (default: 255 seconds). If no new, other IGMP/MLD querier took over then we can't reliably receive IGMP/MLD reports anymore and in turn can't ensure the completeness of our MDB anymore either. No functional change for the fast/data path yet. Signed-off-by: Linus Lüssing <[email protected]> Reviewed-by: Ido Schimmel <[email protected]> --- net/bridge/br_multicast.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/net/bridge/br_multicast.c b/net/bridge/br_multicast.c index 9c22ec63fc6b..64aac9c415e2 100644 --- a/net/bridge/br_multicast.c +++ b/net/bridge/br_multicast.c @@ -1827,6 +1827,10 @@ static void br_multicast_querier_expired(struct net_bridge_mcast *brmctx, br_multicast_start_querier(brmctx, query); out: + /* another IGMP/MLD querier disappeared, set multicast state to inactive + * if our own querier is disabled, too + */ + br_multicast_update_active(brmctx); spin_unlock(&brmctx->br->multicast_lock); } -- 2.53.0