pkt_sched: Fix qstats.qlen updating in dump_stats

Some classful qdiscs miss qstats.qlen updating with q.qlen of their
child qdiscs in dump_stats methods.

Signed-off-by: Jarek Poplawski <jarkao2@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 3 insertions, 1 deletions

diff --git a/net/sched/sch_drr.c b/net/sched/sch_drr.c
index 12b2fb04b29..5a888af7e5d 100644
--- a/net/sched/sch_drr.c
+++ b/net/sched/sch_drr.c
@@ -274,8 +274,10 @@ static int drr_dump_class_stats(struct Qdisc *sch, unsigned long arg,
         struct tc_drr_stats xstats;
 
         memset(&xstats, 0, sizeof(xstats));
-        if (cl->qdisc->q.qlen)
+        if (cl->qdisc->q.qlen) {
                 xstats.deficit = cl->deficit;
+                cl->qdisc->qstats.qlen = cl->qdisc->q.qlen;
+        }
 
         if (gnet_stats_copy_basic(d, &cl->bstats) < 0 ||
             gnet_stats_copy_rate_est(d, &cl->rate_est) < 0 ||