Lines Matching refs:q
126 static void increment_one_qlen(u32 sfbhash, u32 slot, struct sfb_sched_data *q) in increment_one_qlen() argument
129 struct sfb_bucket *b = &q->bins[slot].bins[0][0]; in increment_one_qlen()
141 static void increment_qlen(const struct sk_buff *skb, struct sfb_sched_data *q) in increment_qlen() argument
147 increment_one_qlen(sfbhash, 0, q); in increment_qlen()
151 increment_one_qlen(sfbhash, 1, q); in increment_qlen()
155 struct sfb_sched_data *q) in decrement_one_qlen() argument
158 struct sfb_bucket *b = &q->bins[slot].bins[0][0]; in decrement_one_qlen()
170 static void decrement_qlen(const struct sk_buff *skb, struct sfb_sched_data *q) in decrement_qlen() argument
176 decrement_one_qlen(sfbhash, 0, q); in decrement_qlen()
180 decrement_one_qlen(sfbhash, 1, q); in decrement_qlen()
183 static void decrement_prob(struct sfb_bucket *b, struct sfb_sched_data *q) in decrement_prob() argument
185 b->p_mark = prob_minus(b->p_mark, q->decrement); in decrement_prob()
188 static void increment_prob(struct sfb_bucket *b, struct sfb_sched_data *q) in increment_prob() argument
190 b->p_mark = prob_plus(b->p_mark, q->increment); in increment_prob()
193 static void sfb_zero_all_buckets(struct sfb_sched_data *q) in sfb_zero_all_buckets() argument
195 memset(&q->bins, 0, sizeof(q->bins)); in sfb_zero_all_buckets()
201 static u32 sfb_compute_qlen(u32 *prob_r, u32 *avgpm_r, const struct sfb_sched_data *q) in sfb_compute_qlen() argument
205 const struct sfb_bucket *b = &q->bins[q->slot].bins[0][0]; in sfb_compute_qlen()
221 static void sfb_init_perturbation(u32 slot, struct sfb_sched_data *q) in sfb_init_perturbation() argument
223 q->bins[slot].perturbation = prandom_u32(); in sfb_init_perturbation()
226 static void sfb_swap_slot(struct sfb_sched_data *q) in sfb_swap_slot() argument
228 sfb_init_perturbation(q->slot, q); in sfb_swap_slot()
229 q->slot ^= 1; in sfb_swap_slot()
230 q->double_buffering = false; in sfb_swap_slot()
236 static bool sfb_rate_limit(struct sk_buff *skb, struct sfb_sched_data *q) in sfb_rate_limit() argument
238 if (q->penalty_rate == 0 || q->penalty_burst == 0) in sfb_rate_limit()
241 if (q->tokens_avail < 1) { in sfb_rate_limit()
242 unsigned long age = min(10UL * HZ, jiffies - q->token_time); in sfb_rate_limit()
244 q->tokens_avail = (age * q->penalty_rate) / HZ; in sfb_rate_limit()
245 if (q->tokens_avail > q->penalty_burst) in sfb_rate_limit()
246 q->tokens_avail = q->penalty_burst; in sfb_rate_limit()
247 q->token_time = jiffies; in sfb_rate_limit()
248 if (q->tokens_avail < 1) in sfb_rate_limit()
252 q->tokens_avail--; in sfb_rate_limit()
282 struct sfb_sched_data *q = qdisc_priv(sch); in sfb_enqueue() local
283 struct Qdisc *child = q->qdisc; in sfb_enqueue()
292 if (unlikely(sch->q.qlen >= q->limit)) { in sfb_enqueue()
294 q->stats.queuedrop++; in sfb_enqueue()
298 if (q->rehash_interval > 0) { in sfb_enqueue()
299 unsigned long limit = q->rehash_time + q->rehash_interval; in sfb_enqueue()
302 sfb_swap_slot(q); in sfb_enqueue()
303 q->rehash_time = jiffies; in sfb_enqueue()
304 } else if (unlikely(!q->double_buffering && q->warmup_time > 0 && in sfb_enqueue()
305 time_after(jiffies, limit - q->warmup_time))) { in sfb_enqueue()
306 q->double_buffering = true; in sfb_enqueue()
310 fl = rcu_dereference_bh(q->filter_list); in sfb_enqueue()
322 slot = q->slot; in sfb_enqueue()
327 q->bins[slot].perturbation); in sfb_enqueue()
334 struct sfb_bucket *b = &q->bins[slot].bins[i][hash]; in sfb_enqueue()
338 decrement_prob(b, q); in sfb_enqueue()
339 else if (b->qlen >= q->bin_size) in sfb_enqueue()
340 increment_prob(b, q); in sfb_enqueue()
350 if (unlikely(minqlen >= q->max)) { in sfb_enqueue()
352 q->stats.bucketdrop++; in sfb_enqueue()
358 if (q->double_buffering) { in sfb_enqueue()
362 q->bins[slot].perturbation); in sfb_enqueue()
369 struct sfb_bucket *b = &q->bins[slot].bins[i][hash]; in sfb_enqueue()
373 decrement_prob(b, q); in sfb_enqueue()
374 else if (b->qlen >= q->bin_size) in sfb_enqueue()
375 increment_prob(b, q); in sfb_enqueue()
378 if (sfb_rate_limit(skb, q)) { in sfb_enqueue()
380 q->stats.penaltydrop++; in sfb_enqueue()
395 q->stats.earlydrop++; in sfb_enqueue()
400 q->stats.marked++; in sfb_enqueue()
402 q->stats.earlydrop++; in sfb_enqueue()
410 sch->q.qlen++; in sfb_enqueue()
411 increment_qlen(skb, q); in sfb_enqueue()
413 q->stats.childdrop++; in sfb_enqueue()
430 struct sfb_sched_data *q = qdisc_priv(sch); in sfb_dequeue() local
431 struct Qdisc *child = q->qdisc; in sfb_dequeue()
434 skb = child->dequeue(q->qdisc); in sfb_dequeue()
438 sch->q.qlen--; in sfb_dequeue()
439 decrement_qlen(skb, q); in sfb_dequeue()
447 struct sfb_sched_data *q = qdisc_priv(sch); in sfb_peek() local
448 struct Qdisc *child = q->qdisc; in sfb_peek()
457 struct sfb_sched_data *q = qdisc_priv(sch); in sfb_reset() local
459 qdisc_reset(q->qdisc); in sfb_reset()
460 sch->q.qlen = 0; in sfb_reset()
461 q->slot = 0; in sfb_reset()
462 q->double_buffering = false; in sfb_reset()
463 sfb_zero_all_buckets(q); in sfb_reset()
464 sfb_init_perturbation(0, q); in sfb_reset()
469 struct sfb_sched_data *q = qdisc_priv(sch); in sfb_destroy() local
471 tcf_destroy_chain(&q->filter_list); in sfb_destroy()
472 qdisc_destroy(q->qdisc); in sfb_destroy()
493 struct sfb_sched_data *q = qdisc_priv(sch); in sfb_change() local
521 qdisc_tree_decrease_qlen(q->qdisc, q->qdisc->q.qlen); in sfb_change()
522 qdisc_destroy(q->qdisc); in sfb_change()
523 q->qdisc = child; in sfb_change()
525 q->rehash_interval = msecs_to_jiffies(ctl->rehash_interval); in sfb_change()
526 q->warmup_time = msecs_to_jiffies(ctl->warmup_time); in sfb_change()
527 q->rehash_time = jiffies; in sfb_change()
528 q->limit = limit; in sfb_change()
529 q->increment = ctl->increment; in sfb_change()
530 q->decrement = ctl->decrement; in sfb_change()
531 q->max = ctl->max; in sfb_change()
532 q->bin_size = ctl->bin_size; in sfb_change()
533 q->penalty_rate = ctl->penalty_rate; in sfb_change()
534 q->penalty_burst = ctl->penalty_burst; in sfb_change()
535 q->tokens_avail = ctl->penalty_burst; in sfb_change()
536 q->token_time = jiffies; in sfb_change()
538 q->slot = 0; in sfb_change()
539 q->double_buffering = false; in sfb_change()
540 sfb_zero_all_buckets(q); in sfb_change()
541 sfb_init_perturbation(0, q); in sfb_change()
542 sfb_init_perturbation(1, q); in sfb_change()
551 struct sfb_sched_data *q = qdisc_priv(sch); in sfb_init() local
553 q->qdisc = &noop_qdisc; in sfb_init()
559 struct sfb_sched_data *q = qdisc_priv(sch); in sfb_dump() local
562 .rehash_interval = jiffies_to_msecs(q->rehash_interval), in sfb_dump()
563 .warmup_time = jiffies_to_msecs(q->warmup_time), in sfb_dump()
564 .limit = q->limit, in sfb_dump()
565 .max = q->max, in sfb_dump()
566 .bin_size = q->bin_size, in sfb_dump()
567 .increment = q->increment, in sfb_dump()
568 .decrement = q->decrement, in sfb_dump()
569 .penalty_rate = q->penalty_rate, in sfb_dump()
570 .penalty_burst = q->penalty_burst, in sfb_dump()
573 sch->qstats.backlog = q->qdisc->qstats.backlog; in sfb_dump()
588 struct sfb_sched_data *q = qdisc_priv(sch); in sfb_dump_stats() local
590 .earlydrop = q->stats.earlydrop, in sfb_dump_stats()
591 .penaltydrop = q->stats.penaltydrop, in sfb_dump_stats()
592 .bucketdrop = q->stats.bucketdrop, in sfb_dump_stats()
593 .queuedrop = q->stats.queuedrop, in sfb_dump_stats()
594 .childdrop = q->stats.childdrop, in sfb_dump_stats()
595 .marked = q->stats.marked, in sfb_dump_stats()
598 st.maxqlen = sfb_compute_qlen(&st.maxprob, &st.avgprob, q); in sfb_dump_stats()
612 struct sfb_sched_data *q = qdisc_priv(sch); in sfb_graft() local
618 *old = q->qdisc; in sfb_graft()
619 q->qdisc = new; in sfb_graft()
620 qdisc_tree_decrease_qlen(*old, (*old)->q.qlen); in sfb_graft()
628 struct sfb_sched_data *q = qdisc_priv(sch); in sfb_leaf() local
630 return q->qdisc; in sfb_leaf()
668 struct sfb_sched_data *q = qdisc_priv(sch); in sfb_find_tcf() local
672 return &q->filter_list; in sfb_find_tcf()