[Patch net] sch_qfq: keep backlog updated with qlen

[Cong Wang]

Reported-by: Stas Nichiporovich <stas...@gmail.com>
Fixes: 2ccccf5fb43f ("net_sched: update hierarchical backlog too")
Cc: Jamal Hadi Salim <j...@mojatatu.com>
Signed-off-by: Cong Wang <xiyou.wangc...@gmail.com>
---
 net/sched/sch_qfq.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/net/sched/sch_qfq.c b/net/sched/sch_qfq.c
index f27ffee..ca0516e 100644
--- a/net/sched/sch_qfq.c
+++ b/net/sched/sch_qfq.c
@@ -1153,6 +1153,7 @@ static struct sk_buff *qfq_dequeue(struct Qdisc *sch)
        if (!skb)
                return NULL;
 
+       qdisc_qstats_backlog_dec(sch, skb);
        sch->q.qlen--;
        qdisc_bstats_update(sch, skb);
 
@@ -1256,6 +1257,7 @@ static int qfq_enqueue(struct sk_buff *skb, struct Qdisc 
*sch,
        }
 
        bstats_update(&cl->bstats, skb);
+       qdisc_qstats_backlog_inc(sch, skb);
        ++sch->q.qlen;
 
        agg = cl->agg;
@@ -1476,6 +1478,7 @@ static void qfq_reset_qdisc(struct Qdisc *sch)
                        qdisc_reset(cl->qdisc);
                }
        }
+       sch->qstats.backlog = 0;
        sch->q.qlen = 0;
 }
 
-- 
2.1.0