net: sched: flower: handle concurrent filter insertion in fl_change

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Check if user specified a handle and another filter with the same handle
was inserted concurrently. Return EAGAIN to retry filter processing (in
case it is an overwrite request).

Signed-off-by: Vlad Buslov <vladbu@mellanox.com>
Acked-by: Jiri Pirko <jiri@mellanox.com>
Reviewed-by: Stefano Brivio <sbrivio@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

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Vlad Buslov 2019-03-21 15:17:40 +02:00 • committed by David S. Miller

parent 259e60f967

commit 9a2d938998

1 changed files with 9 additions and 0 deletions

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net/sched/cls_flower.c

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