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authorNikolay Aleksandrov <nikolay@cumulusnetworks.com>2019-04-03 13:49:24 +0300
committerDavid S. Miller <davem@davemloft.net>2019-04-05 03:39:47 +0300
commit8dc350202d32dbd9482b97dbf8ca22fbcb2a7918 (patch)
tree9f063e0598b437bd6c83f9c54f223719020b073e /net/bridge/br_stp_if.c
parenta0640e610f7bc02935092ca7be1b45b1381425b0 (diff)
downloadlinux-8dc350202d32dbd9482b97dbf8ca22fbcb2a7918.tar.xz
net: bridge: optimize backup_port fdb convergence
We can optimize the fdb convergence when a backup_port is present by not immediately flushing the entries of the stopped port since traffic for those entries will flow towards the backup_port. There are 2 cases specifically that benefit most: - when the stopped port comes up before the entries expire by themselves - when there's an external entry refresh and they're kept while the backup_port is operating (e.g. mlag) Signed-off-by: Nikolay Aleksandrov <nikolay@cumulusnetworks.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/bridge/br_stp_if.c')
-rw-r--r--net/bridge/br_stp_if.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/net/bridge/br_stp_if.c b/net/bridge/br_stp_if.c
index 808e2b914015..8d65ae5210e0 100644
--- a/net/bridge/br_stp_if.c
+++ b/net/bridge/br_stp_if.c
@@ -117,7 +117,8 @@ void br_stp_disable_port(struct net_bridge_port *p)
del_timer(&p->forward_delay_timer);
del_timer(&p->hold_timer);
- br_fdb_delete_by_port(br, p, 0, 0);
+ if (!rcu_access_pointer(p->backup_port))
+ br_fdb_delete_by_port(br, p, 0, 0);
br_multicast_disable_port(p);
br_configuration_update(br);