Messages in this thread Patch in this message | | | From | Peilin Ye <> | Subject | [PATCH RFC v1 net-next 3/4] net/sched: sch_htb: Use Qdisc backpressure infrastructure | Date | Fri, 6 May 2022 12:45:24 -0700 |
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From: Peilin Ye <peilin.ye@bytedance.com>
Recently we introduced a Qdisc backpressure infrastructure for TCP and UDP sockets. Use it in HTB.
Suggested-by: Cong Wang <cong.wang@bytedance.com> Signed-off-by: Peilin Ye <peilin.ye@bytedance.com> --- net/sched/sch_htb.c | 5 +++++ 1 file changed, 5 insertions(+)
diff --git a/net/sched/sch_htb.c b/net/sched/sch_htb.c index 23a9d6242429..21d78dff08e7 100644 --- a/net/sched/sch_htb.c +++ b/net/sched/sch_htb.c @@ -623,6 +623,7 @@ static int htb_enqueue(struct sk_buff *skb, struct Qdisc *sch, __qdisc_enqueue_tail(skb, &q->direct_queue); q->direct_pkts++; } else { + qdisc_backpressure_overlimit(sch, skb); return qdisc_drop(skb, sch, to_free); } #ifdef CONFIG_NET_CLS_ACT @@ -634,6 +635,7 @@ static int htb_enqueue(struct sk_buff *skb, struct Qdisc *sch, #endif } else if ((ret = qdisc_enqueue(skb, cl->leaf.q, to_free)) != NET_XMIT_SUCCESS) { + qdisc_backpressure_overlimit(sch, skb); if (net_xmit_drop_count(ret)) { qdisc_qstats_drop(sch); cl->drops++; @@ -978,6 +980,9 @@ static struct sk_buff *htb_dequeue(struct Qdisc *sch) goto ok; } } + + qdisc_backpressure_throttle(sch); + if (likely(next_event > q->now)) qdisc_watchdog_schedule_ns(&q->watchdog, next_event); else -- 2.20.1
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