net: sched: flower: add reference counter to flower mask

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Extend fl_flow_mask structure with reference counter to allow parallel
modification without relying on rtnl lock. Use rcu read lock to safely
lookup mask and increment reference counter in order to accommodate
concurrent deletes.

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 15:17:37 +02:00 • committed by David S. Miller

parent b2552b8c40

commit f48ef4d5b0

1 changed files with 17 additions and 5 deletions

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net/sched/cls_flower.c

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