summaryrefslogtreecommitdiff
path: root/net/sched/sch_pie.c
diff options
context:
space:
mode:
authorWANG Cong <xiyou.wangcong@gmail.com>2016-02-25 14:55:01 -0800
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2016-05-18 17:06:39 -0700
commitca375cf34a7186f5b8817082d2b594dcd8cedc8b (patch)
tree682af6cf7b7913bef5e736c1d0e76fb947d1f4b9 /net/sched/sch_pie.c
parent1188e1403a772d9698c06bcc53c44783536ff09e (diff)
net_sched: update hierarchical backlog too
[ Upstream commit 2ccccf5fb43ff62b2b96cc58d95fc0b3596516e4 ] When the bottom qdisc decides to, for example, drop some packet, it calls qdisc_tree_decrease_qlen() to update the queue length for all its ancestors, we need to update the backlog too to keep the stats on root qdisc accurate. Cc: Jamal Hadi Salim <jhs@mojatatu.com> Acked-by: Jamal Hadi Salim <jhs@mojatatu.com> Signed-off-by: Cong Wang <xiyou.wangcong@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'net/sched/sch_pie.c')
-rw-r--r--net/sched/sch_pie.c5
1 files changed, 3 insertions, 2 deletions
diff --git a/net/sched/sch_pie.c b/net/sched/sch_pie.c
index b783a446d884..71ae3b9629f9 100644
--- a/net/sched/sch_pie.c
+++ b/net/sched/sch_pie.c
@@ -183,7 +183,7 @@ static int pie_change(struct Qdisc *sch, struct nlattr *opt)
{
struct pie_sched_data *q = qdisc_priv(sch);
struct nlattr *tb[TCA_PIE_MAX + 1];
- unsigned int qlen;
+ unsigned int qlen, dropped = 0;
int err;
if (!opt)
@@ -232,10 +232,11 @@ static int pie_change(struct Qdisc *sch, struct nlattr *opt)
while (sch->q.qlen > sch->limit) {
struct sk_buff *skb = __skb_dequeue(&sch->q);
+ dropped += qdisc_pkt_len(skb);
qdisc_qstats_backlog_dec(sch, skb);
qdisc_drop(skb, sch);
}
- qdisc_tree_decrease_qlen(sch, qlen - sch->q.qlen);
+ qdisc_tree_reduce_backlog(sch, qlen - sch->q.qlen, dropped);
sch_tree_unlock(sch);
return 0;