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OpenCloudOS-Kernel
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[NET_SCHED]: sch_tbf: use hrtimer based watchdog 

Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Patrick McHardy 2007-03-16 01:20:07 -07:00 committed by David S. Miller
parent ed2b229a97
commit f7f593e383
1 changed files with 7 additions and 24 deletions
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31
net/sched/sch_tbf.c
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@ -127,8 +127,8 @@ struct tbf_sched_data
long tokens; /* Current number of B tokens */
long ptokens; /* Current number of P tokens */
psched_time_t t_c; /* Time check-point */
struct timer_list wd_timer; /* Watchdog timer */
struct Qdisc *qdisc; /* Inner qdisc, default - bfifo queue */
struct qdisc_watchdog watchdog; /* Watchdog timer */
};
#define L2T(q,L) ((q)->R_tab->data[(L)>>(q)->R_tab->rate.cell_log])
@ -185,14 +185,6 @@ static unsigned int tbf_drop(struct Qdisc* sch)
return len;
}
static void tbf_watchdog(unsigned long arg)
{
struct Qdisc *sch = (struct Qdisc*)arg;
sch->flags &= ~TCQ_F_THROTTLED;
netif_schedule(sch->dev);
}
static struct sk_buff *tbf_dequeue(struct Qdisc* sch)
{
struct tbf_sched_data *q = qdisc_priv(sch);
@ -202,7 +194,7 @@ static struct sk_buff *tbf_dequeue(struct Qdisc* sch)
if (skb) {
psched_time_t now;
long toks, delay;
long toks;
long ptoks = 0;
unsigned int len = skb->len;
@ -230,12 +222,8 @@ static struct sk_buff *tbf_dequeue(struct Qdisc* sch)
return skb;
}
delay = PSCHED_US2JIFFIE(max_t(long, -toks, -ptoks));
if (delay == 0)
delay = 1;
mod_timer(&q->wd_timer, jiffies+delay);
qdisc_watchdog_schedule(&q->watchdog,
now + max_t(long, -toks, -ptoks));
/* Maybe we have a shorter packet in the queue,
which can be sent now. It sounds cool,
@ -254,7 +242,6 @@ static struct sk_buff *tbf_dequeue(struct Qdisc* sch)
sch->qstats.drops++;
}
sch->flags |= TCQ_F_THROTTLED;
sch->qstats.overlimits++;
}
return NULL;
@ -269,8 +256,7 @@ static void tbf_reset(struct Qdisc* sch)
PSCHED_GET_TIME(q->t_c);
q->tokens = q->buffer;
q->ptokens = q->mtu;
sch->flags &= ~TCQ_F_THROTTLED;
del_timer(&q->wd_timer);
qdisc_watchdog_cancel(&q->watchdog);
}
static struct Qdisc *tbf_create_dflt_qdisc(struct Qdisc *sch, u32 limit)
@ -378,10 +364,7 @@ static int tbf_init(struct Qdisc* sch, struct rtattr *opt)
return -EINVAL;
PSCHED_GET_TIME(q->t_c);
init_timer(&q->wd_timer);
q->wd_timer.function = tbf_watchdog;
q->wd_timer.data = (unsigned long)sch;
qdisc_watchdog_init(&q->watchdog, sch);
q->qdisc = &noop_qdisc;
return tbf_change(sch, opt);
@ -391,7 +374,7 @@ static void tbf_destroy(struct Qdisc *sch)
{
struct tbf_sched_data *q = qdisc_priv(sch);
del_timer(&q->wd_timer);
qdisc_watchdog_cancel(&q->watchdog);
if (q->P_tab)
qdisc_put_rtab(q->P_tab);