net: sched: ensure tc flower reoffload takes filter ref

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Recent changes to TC flower remove the requirement for rtnl lock when
accessing and modifying filters. Refcounts now ensure access and deletion
do not happen concurrently. However, the reoffload function which cycles
through all filters and replays them to registered hw drivers is not
protected.

Use the fl_get_next_filter() function to cycle the filters for reoffload
and ensure the ref taken by this function is put when done with each
filter.

Signed-off-by: John Hurley <john.hurley@netronome.com>
Reviewed-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Reviewed-by: Vlad Buslov <vladbu@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

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John Hurley 2019-04-02 23:53:20 +01:00 • committed by David S. Miller

parent 847d44efad

commit 95e27a4da6

1 changed files with 46 additions and 42 deletions

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net/sched/cls_flower.c

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