net: sched: use Qdisc rcu API instead of relying on rtnl lock

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As a preparation from removing rtnl lock dependency from rules update path,
use Qdisc rcu and reference counting capabilities instead of relying on
rtnl lock while working with Qdiscs. Create new tcf_block_release()
function, and use it to free resources taken by tcf_block_find().
Currently, this function only releases Qdisc and it is extended in next
patches in this series.

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

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Vlad Buslov 2018-09-24 19:22:53 +03:00 • committed by David S. Miller

parent 9d7e82cec3

commit e368fdb61d

1 changed files with 64 additions and 15 deletions

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net/sched/cls_api.c

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