diff options
| -rw-r--r-- | net/sched/sch_hfsc.c | 11 |
1 files changed, 10 insertions, 1 deletions
diff --git a/net/sched/sch_hfsc.c b/net/sched/sch_hfsc.c index 8cb5eff7b79c..6d6df6b2d38f 100644 --- a/net/sched/sch_hfsc.c +++ b/net/sched/sch_hfsc.c @@ -1594,8 +1594,17 @@ hfsc_enqueue(struct sk_buff *skb, struct Qdisc *sch, struct sk_buff **to_free) return err; } - if (cl->qdisc->q.qlen == 1) + if (cl->qdisc->q.qlen == 1) { set_active(cl, qdisc_pkt_len(skb)); + /* + * If this is the first packet, isolate the head so an eventual + * head drop before the first dequeue operation has no chance + * to invalidate the deadline. + */ + if (cl->cl_flags & HFSC_RSC) + cl->qdisc->ops->peek(cl->qdisc); + + } qdisc_qstats_backlog_inc(sch, skb); sch->q.qlen++; |