tree db3a6c5e2450ef0eae61879159ff64678b65fac7
parent ed76f5edccc98fa66f2337f0b3b255d6e1a568b7
author Vlad Buslov <vladbu@mellanox.com> 1549875339 +0200
committer David S. Miller <davem@davemloft.net> 1549996892 -0500

net: sched: introduce reference counting for tcf_proto

In order to remove dependency on rtnl lock and allow concurrent tcf_proto
modification, extend tcf_proto with reference counter. Implement helper
get/put functions for tcf proto and use them to modify cls API to always
take reference to tcf_proto while using it. Only release reference to
parent chain after releasing last reference to tp.

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