-/* TC_CBQ_OVL_RCLASSIC: penalize by offtime classes in hierarchy, when
- * they go overlimit
- */
-
-static void cbq_ovl_rclassic(struct cbq_class *cl)
-{
- struct cbq_sched_data *q = qdisc_priv(cl->qdisc);
- struct cbq_class *this = cl;
-
- do {
- if (cl->level > q->toplevel) {
- cl = NULL;
- break;
- }
- } while ((cl = cl->borrow) != NULL);
-
- if (cl == NULL)
- cl = this;
- cbq_ovl_classic(cl);
-}
-
-/* TC_CBQ_OVL_DELAY: delay until it will go to underlimit */
-
-static void cbq_ovl_delay(struct cbq_class *cl)
-{
- struct cbq_sched_data *q = qdisc_priv(cl->qdisc);
- psched_tdiff_t delay = cl->undertime - q->now;
-
- if (test_bit(__QDISC_STATE_DEACTIVATED,
- &qdisc_root_sleeping(cl->qdisc)->state))
- return;
-
- if (!cl->delayed) {
- psched_time_t sched = q->now;
- ktime_t expires;
-
- delay += cl->offtime;
- if (cl->avgidle < 0)
- delay -= (-cl->avgidle) - ((-cl->avgidle) >> cl->ewma_log);
- if (cl->avgidle < cl->minidle)
- cl->avgidle = cl->minidle;
- cl->undertime = q->now + delay;
-
- if (delay > 0) {
- sched += delay + cl->penalty;
- cl->penalized = sched;
- cl->cpriority = TC_CBQ_MAXPRIO;
- q->pmask |= (1<<TC_CBQ_MAXPRIO);
-
- expires = ns_to_ktime(PSCHED_TICKS2NS(sched));
- if (hrtimer_try_to_cancel(&q->delay_timer) &&
- ktime_to_ns(ktime_sub(
- hrtimer_get_expires(&q->delay_timer),
- expires)) > 0)
- hrtimer_set_expires(&q->delay_timer, expires);
- hrtimer_restart(&q->delay_timer);
- cl->delayed = 1;
- cl->xstats.overactions++;
- return;
- }
- delay = 1;
- }
- if (q->wd_expires == 0 || q->wd_expires > delay)
- q->wd_expires = delay;
-}
-
-/* TC_CBQ_OVL_LOWPRIO: penalize class by lowering its priority band */
-
-static void cbq_ovl_lowprio(struct cbq_class *cl)
-{
- struct cbq_sched_data *q = qdisc_priv(cl->qdisc);
-
- cl->penalized = q->now + cl->penalty;
-
- if (cl->cpriority != cl->priority2) {
- cl->cpriority = cl->priority2;
- q->pmask |= (1<<cl->cpriority);
- cl->xstats.overactions++;
- }
- cbq_ovl_classic(cl);
-}
-
-/* TC_CBQ_OVL_DROP: penalize class by dropping */
-
-static void cbq_ovl_drop(struct cbq_class *cl)
-{
- if (cl->q->ops->drop)
- if (cl->q->ops->drop(cl->q))
- cl->qdisc->q.qlen--;
- cl->xstats.overactions++;
- cbq_ovl_classic(cl);
-}
-