[Patch net 13/15] net_sched: add rtnl assertion to tcf_exts_destroy()

[Cong Wang]

After previous patches, it is now safe to claim that
tcf_exts_destroy() is always called with RTNL lock.

Cc: Jiri Pirko <j...@resnulli.us>
Cc: John Fastabend <john.fastab...@gmail.com>
Cc: Jamal Hadi Salim <j...@mojatatu.com>
Cc: "Paul E. McKenney" <paul...@linux.vnet.ibm.com>
Signed-off-by: Cong Wang <xiyou.wangc...@gmail.com>
---
 net/sched/cls_api.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/net/sched/cls_api.c b/net/sched/cls_api.c
index 0b2219adf520..c48482942995 100644
--- a/net/sched/cls_api.c
+++ b/net/sched/cls_api.c
@@ -879,6 +879,7 @@ void tcf_exts_destroy(struct tcf_exts *exts)
 #ifdef CONFIG_NET_CLS_ACT
        LIST_HEAD(actions);
 
+       ASSERT_RTNL();
        tcf_exts_to_list(exts, &actions);
        tcf_action_destroy(&actions, TCA_ACT_UNBIND);
        kfree(exts->actions);
-- 
2.13.0