netdev - [PATCH net-next 06/14] net: sched: add qstats.qlen to qlen

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Message-Id: <20180526045338.10993-7-jakub.kicinski@netronome.com>
Date:   Fri, 25 May 2018 21:53:30 -0700
From:   Jakub Kicinski <jakub.kicinski@...ronome.com>
To:     davem@...emloft.net
Cc:     jiri@...nulli.us, xiyou.wangcong@...il.com,
        john.fastabend@...il.com, netdev@...r.kernel.org,
        oss-drivers@...ronome.com, alexei.starovoitov@...il.com,
        nogahf@...lanox.com, yuvalm@...lanox.com, gerlitz.or@...il.com,
        Jakub Kicinski <jakub.kicinski@...ronome.com>
Subject: [PATCH net-next 06/14] net: sched: add qstats.qlen to qlen

AFAICT struct gnet_stats_queue.qlen is not used in Qdiscs.
It may, however, be useful for offloads to report HW queue
length there.  Add that value to the result of qdisc_qlen_sum().

Signed-off-by: Jakub Kicinski <jakub.kicinski@...ronome.com>
---
 include/net/sch_generic.h | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/include/net/sch_generic.h b/include/net/sch_generic.h
index 98c10a28cd01..0b786c8204b9 100644
--- a/include/net/sch_generic.h
+++ b/include/net/sch_generic.h
@@ -350,14 +350,14 @@ static inline int qdisc_qlen(const struct Qdisc *q)
 
 static inline int qdisc_qlen_sum(const struct Qdisc *q)
 {
-	__u32 qlen = 0;
+	__u32 qlen = q->qstats.qlen;
 	int i;
 
 	if (q->flags & TCQ_F_NOLOCK) {
 		for_each_possible_cpu(i)
 			qlen += per_cpu_ptr(q->cpu_qstats, i)->qlen;
 	} else {
-		qlen = q->q.qlen;
+		qlen += q->q.qlen;
 	}
 
 	return qlen;
-- 
2.17.0