netdev - [PATCH net-next 1/7] sch_netem: clear old clgstate when old qdisc's replaced

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Message-ID: <1392366970-11592-2-git-send-email-yangyingliang@huawei.com>
Date:	Fri, 14 Feb 2014 16:36:04 +0800
From:	Yang Yingliang <yangyingliang@...wei.com>
To:	<netdev@...r.kernel.org>
CC:	<davem@...emloft.net>, <stephen@...workplumber.org>
Subject: [PATCH net-next 1/7] sch_netem: clear old clgstate when old qdisc's replaced

If we set a netem qdisc with clgstate options, while we
use "#tc qdisc replace ..." that without clgstate options
to replace the old qdisc, the old clgstate's value is still
there. We need clear these values after qdisc's replaced.

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

diff --git a/net/sched/sch_netem.c b/net/sched/sch_netem.c
index 4fced67..6f2cc04 100644
--- a/net/sched/sch_netem.c
+++ b/net/sched/sch_netem.c
@@ -845,6 +845,7 @@ static int netem_change(struct Qdisc *sch, struct nlattr *opt)
 		}
 	} else {
 		q->loss_model = CLG_RANDOM;
+		memset(&q->clg, 0, sizeof(q->clg));
 	}
 
 	if (tb[TCA_NETEM_DELAY_DIST]) {
-- 
1.8.0


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