netdev - [PATCH net] net: sched: fix dump qlen for sch_mq/sch

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Date:   Tue,  3 Dec 2019 11:17:40 +0800
From:   Dust Li <dust.li@...ux.alibaba.com>
To:     Cong Wang <xiyou.wangcong@...il.com>,
        Jamal Hadi Salim <jhs@...atatu.com>,
        Jiri Pirko <jiri@...nulli.us>,
        John Fastabend <john.fastabend@...il.com>
Cc:     Tony Lu <tonylu@...ux.alibaba.com>, netdev@...r.kernel.org
Subject: [PATCH net] net: sched: fix dump qlen for sch_mq/sch_mqprio with NOLOCK subqueues

 sch->q.len hasn't been set if the subqueue is a NOLOCK qdisc
 in mq_dump() and mqprio_dump().

Fixes: ce679e8df7ed ("net: sched: add support for TCQ_F_NOLOCK subqueues to sch_mqprio")
Signed-off-by: Dust Li <dust.li@...ux.alibaba.com>
Signed-off-by: Tony Lu <tonylu@...ux.alibaba.com>
---
 net/sched/sch_mq.c     | 1 +
 net/sched/sch_mqprio.c | 1 +
 2 files changed, 2 insertions(+)

diff --git a/net/sched/sch_mq.c b/net/sched/sch_mq.c
index 278c0b2dc523..e79f1afe0cfd 100644
--- a/net/sched/sch_mq.c
+++ b/net/sched/sch_mq.c
@@ -153,6 +153,7 @@ static int mq_dump(struct Qdisc *sch, struct sk_buff *skb)
 			__gnet_stats_copy_queue(&sch->qstats,
 						qdisc->cpu_qstats,
 						&qdisc->qstats, qlen);
+			sch->q.qlen		+= qlen;
 		} else {
 			sch->q.qlen		+= qdisc->q.qlen;
 			sch->bstats.bytes	+= qdisc->bstats.bytes;
diff --git a/net/sched/sch_mqprio.c b/net/sched/sch_mqprio.c
index 0d0113a24962..de4e00a58bc6 100644
--- a/net/sched/sch_mqprio.c
+++ b/net/sched/sch_mqprio.c
@@ -411,6 +411,7 @@ static int mqprio_dump(struct Qdisc *sch, struct sk_buff *skb)
 			__gnet_stats_copy_queue(&sch->qstats,
 						qdisc->cpu_qstats,
 						&qdisc->qstats, qlen);
+			sch->q.qlen		+= qlen;
 		} else {
 			sch->q.qlen		+= qdisc->q.qlen;
 			sch->bstats.bytes	+= qdisc->bstats.bytes;
-- 
2.19.1.3.ge56e4f7