net: sched: act_vlan: remove dependency on rtnl lock
authorVlad Buslov <vladbu@mellanox.com>
Fri, 10 Aug 2018 17:51:51 +0000 (20:51 +0300)
committerDavid S. Miller <davem@davemloft.net>
Sat, 11 Aug 2018 19:37:10 +0000 (12:37 -0700)
commit764e9a24480f6ffba5493fb21e6a7b030d6b8b67
treefc393dce078fb6d5ac6014f0e72eca289ef6b33e
parent729e01260989cc06c8a78491b46545793aef323a
net: sched: act_vlan: remove dependency on rtnl lock

Use tcf spinlock to protect vlan action private data from concurrent
modification during dump and init. Use rcu swap operation to reassign
params pointer under protection of tcf lock. (old params value is not used
by init, so there is no need of standalone rcu dereference step)

Remove rtnl assertion that is no longer necessary.

Signed-off-by: Vlad Buslov <vladbu@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
net/sched/act_vlan.c