netdev - [Patch net] sch_choke: drop all packets in queue during reset

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Message-Id: <1437522763-23765-1-git-send-email-xiyou.wangcong@gmail.com>
Date:	Tue, 21 Jul 2015 16:52:43 -0700
From:	Cong Wang <xiyou.wangcong@...il.com>
To:	netdev@...r.kernel.org
Cc:	Cong Wang <xiyou.wangcong@...il.com>
Subject: [Patch net] sch_choke: drop all packets in queue during reset

Signed-off-by: Cong Wang <xiyou.wangcong@...il.com>
---
 net/sched/sch_choke.c | 13 +++++++++++++
 1 file changed, 13 insertions(+)

diff --git a/net/sched/sch_choke.c b/net/sched/sch_choke.c
index 93d5742..6a783af 100644
--- a/net/sched/sch_choke.c
+++ b/net/sched/sch_choke.c
@@ -385,6 +385,19 @@ static void choke_reset(struct Qdisc *sch)
 {
 	struct choke_sched_data *q = qdisc_priv(sch);
 
+	while (q->head != q->tail) {
+		struct sk_buff *skb = q->tab[q->head];
+
+		q->head = (q->head + 1) & q->tab_mask;
+		if (!skb)
+			continue;
+		qdisc_qstats_backlog_dec(sch, skb);
+		--sch->q.qlen;
+		qdisc_drop(skb, sch);
+	}
+
+	memset(q->tab, 0, (q->tab_mask + 1) * sizeof(struct sk_buff *));
+	q->head = q->tail = 0;
 	red_restart(&q->vars);
 }
 
-- 
1.8.3.1

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