From 59cb5c6734021acc68590c7c2e0e92ad9a4952c6 Mon Sep 17 00:00:00 2001 From: Patrick McHardy Date: Fri, 16 Mar 2007 01:20:31 -0700 Subject: [PATCH] [NET_SCHED]: sch_netem: use hrtimer based watchdog Signed-off-by: Patrick McHardy Signed-off-by: David S. Miller --- net/sched/sch_netem.c | 25 +++++-------------------- 1 file changed, 5 insertions(+), 20 deletions(-) diff --git a/net/sched/sch_netem.c b/net/sched/sch_netem.c index 1ccbfb55b0b8..915f82a2cc3d 100644 --- a/net/sched/sch_netem.c +++ b/net/sched/sch_netem.c @@ -54,7 +54,7 @@ struct netem_sched_data { struct Qdisc *qdisc; - struct timer_list timer; + struct qdisc_watchdog watchdog; u32 latency; u32 loss; @@ -284,7 +284,7 @@ static struct sk_buff *netem_dequeue(struct Qdisc *sch) sch->flags &= ~TCQ_F_THROTTLED; return skb; } else { - psched_tdiff_t delay = PSCHED_TDIFF(cb->time_to_send, now); + qdisc_watchdog_schedule(&q->watchdog, cb->time_to_send); if (q->qdisc->ops->requeue(skb, q->qdisc) != NET_XMIT_SUCCESS) { qdisc_tree_decrease_qlen(q->qdisc, 1); @@ -292,32 +292,19 @@ static struct sk_buff *netem_dequeue(struct Qdisc *sch) printk(KERN_ERR "netem: queue discpline %s could not requeue\n", q->qdisc->ops->id); } - - mod_timer(&q->timer, jiffies + PSCHED_US2JIFFIE(delay)); - sch->flags |= TCQ_F_THROTTLED; } } return NULL; } -static void netem_watchdog(unsigned long arg) -{ - struct Qdisc *sch = (struct Qdisc *)arg; - - pr_debug("netem_watchdog qlen=%d\n", sch->q.qlen); - sch->flags &= ~TCQ_F_THROTTLED; - netif_schedule(sch->dev); -} - static void netem_reset(struct Qdisc *sch) { struct netem_sched_data *q = qdisc_priv(sch); qdisc_reset(q->qdisc); sch->q.qlen = 0; - sch->flags &= ~TCQ_F_THROTTLED; - del_timer_sync(&q->timer); + qdisc_watchdog_cancel(&q->watchdog); } /* Pass size change message down to embedded FIFO */ @@ -567,9 +554,7 @@ static int netem_init(struct Qdisc *sch, struct rtattr *opt) if (!opt) return -EINVAL; - init_timer(&q->timer); - q->timer.function = netem_watchdog; - q->timer.data = (unsigned long) sch; + qdisc_watchdog_init(&q->watchdog, sch); q->qdisc = qdisc_create_dflt(sch->dev, &tfifo_qdisc_ops, TC_H_MAKE(sch->handle, 1)); @@ -590,7 +575,7 @@ static void netem_destroy(struct Qdisc *sch) { struct netem_sched_data *q = qdisc_priv(sch); - del_timer_sync(&q->timer); + qdisc_watchdog_cancel(&q->watchdog); qdisc_destroy(q->qdisc); kfree(q->delay_dist); } -- 2.20.1