net: sched: refactor ct action helpers to require tcf_lock
authorVlad Buslov <vladbu@mellanox.com>
Mon, 17 Feb 2020 10:12:11 +0000 (12:12 +0200)
committerDavid S. Miller <davem@davemloft.net>
Mon, 17 Feb 2020 22:17:02 +0000 (14:17 -0800)
commit107f2d50916500985b9fffd7c77d8c14809f9802
treed99a6519c6c2b5f32fccd320dae79635cc9d0bfe
parent487e9589cc0ebebde4d1c4764aab271e5680a6b6
net: sched: refactor ct action helpers to require tcf_lock

In order to remove rtnl lock dependency from flow_action representation
translator, change rtnl_dereference() to rcu_dereference_protected() in ct
action helpers that provide external access to zone and action values. This
is safe to do because the functions are not called from anywhere else
outside flow_action infrastructure which was modified to obtain tcf_lock
when accessing action data in one of previous patches in the 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>
include/net/tc_act/tc_ct.h