[PATCH 3.16 314/370] sch_dsmark: update backlog as well

Ben Hutchings
2017-03-10T13:33:16Z

From: WANG Cong <xiyou.wangcong@gmail.com>

[ Upstream commit bdf17661f63a79c3cb4209b970b1cc39e34f7543 ]

Similarly, we need to update backlog too when we update qlen.

Cc: Jamal Hadi Salim <jhs@mojatatu.com>
Signed-off-by: Cong Wang <xiyou.wangcong@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
[bwh: Backported to 3.16: open-code qdisc_qstats_backlog_{inc,dec}()]
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
---
net/sched/sch_dsmark.c | 3 +++
1 file changed, 3 insertions(+)

--- a/net/sched/sch_dsmark.c
+++ b/net/sched/sch_dsmark.c
@@ -255,6 +255,7 @@ static int dsmark_enqueue(struct sk_buff
return err;
}

+ sch->qstats.backlog += qdisc_pkt_len(skb);
sch->q.qlen++;

return NET_XMIT_SUCCESS;
@@ -277,6 +278,7 @@ static struct sk_buff *dsmark_dequeue(st
return NULL;

qdisc_bstats_update(sch, skb);
+ sch->qstats.backlog -= qdisc_pkt_len(skb);
sch->q.qlen--;

index = skb->tc_index & (p->indices - 1);
@@ -392,6 +394,7 @@ static void dsmark_reset(struct Qdisc *s

pr_debug("%s(sch %p,[qdisc %p])\n", __func__, sch, p);
qdisc_reset(p->q);
+ sch->qstats.backlog = 0;
sch->q.qlen = 0;
}