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[net-next,7/7] sch_netem: clear old ecn when old qdisc's replaced

Message ID 1392366970-11592-8-git-send-email-yangyingliang@huawei.com
State Changes Requested, archived
Delegated to: David Miller
Headers show

Commit Message

Yang Yingliang Feb. 14, 2014, 8:36 a.m. UTC 
If we set a netem qdisc with ecn option, while we
use "#tc qdisc replace ..." that without ecn option
to replace the old qdisc, the old ecn is still there.
We need clear old ecn after qdisc's replaced.

Signed-off-by: Yang Yingliang <yangyingliang@huawei.com>
---
 net/sched/sch_netem.c | 2 ++
 1 file changed, 2 insertions(+)
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Patch

diff --git a/net/sched/sch_netem.c b/net/sched/sch_netem.c
index 92f6ba6..52ae2ef 100644
--- a/net/sched/sch_netem.c
+++ b/net/sched/sch_netem.c
@@ -936,6 +936,8 @@  static int netem_change(struct Qdisc *sch, struct nlattr *opt)
 
 	if (tb[TCA_NETEM_ECN])
 		q->ecn = nla_get_u32(tb[TCA_NETEM_ECN]);
+	else
+		q->ecn = 0;
 
 	return ret;
 }