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

Message ID 20171023220304.2268-14-xiyou.wangcong@gmail.com
State Changes Requested, archived
Delegated to: David Miller
Headers show
Series net_sched: remove RCU callbacks from TC | expand

Commit Message

Cong Wang Oct. 23, 2017, 10:03 p.m. UTC 
After previous patches, it is now safe to claim that
tcf_exts_destroy() is always called with RTNL lock.

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

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);