tree bda0a6e29e0d7748d2f7e59a8da9c5194f486b36
parent 1f90c7f3470580e24da25f6a6c1fb480ed9371ac
author Nikolay Aleksandrov <nikolay@cumulusnetworks.com> 1486227907 +0100
committer David S. Miller <davem@davemloft.net> 1486439593 -0500

bridge: move to workqueue gc

Move the fdb garbage collector to a workqueue which fires at least 10
milliseconds apart and cleans chain by chain allowing for other tasks
to run in the meantime. When having thousands of fdbs the system is much
more responsive. Most importantly remove the need to check if the
matched entry has expired in __br_fdb_get that causes false-sharing and
is completely unnecessary if we cleanup entries, at worst we'll get 10ms
of traffic for that entry before it gets deleted.

Signed-off-by: Nikolay Aleksandrov <nikolay@cumulusnetworks.com>
Signed-off-by: David S. Miller <davem@davemloft.net>