20  *	'idleslope': Idleslope is the rate of credits that is
23  *	when the current value of credits is equal or greater than
25  *	credits is set to zero. This is the main tunable of the CBS
29  *	Sendslope is the rate of credits that is depleted (it should be a
36  *	'hicredit': Hicredit defines the maximum amount of credits (in
46  *	'locredit': Locredit is the minimum amount of credits that can
75 	s64 credits; /* in bytes */  member
120 	if (sch->q.qlen == 0 && q->credits > 0) {  in cbs_enqueue_soft()
121 		/* We need to stop accumulating credits when there's  in cbs_enqueue_soft()
122 		 * no enqueued packets and q->credits is positive.  in cbs_enqueue_soft()
124 		q->credits = 0;  in cbs_enqueue_soft()
145 static s64 delay_from_credits(s64 credits, s64 slope)  in delay_from_credits()  argument
150 	return div64_s64(-credits * NSEC_PER_SEC, slope);  in delay_from_credits()
182 	s64 credits;  in cbs_dequeue_soft()  local
190 	if (q->credits < 0) {  in cbs_dequeue_soft()
191 		credits = timediff_to_credits(now - q->last, q->idleslope);  in cbs_dequeue_soft()
193 		credits = q->credits + credits;  in cbs_dequeue_soft()
194 		q->credits = min_t(s64, credits, q->hicredit);  in cbs_dequeue_soft()
196 		if (q->credits < 0) {  in cbs_dequeue_soft()
199 			delay = delay_from_credits(q->credits, q->idleslope);  in cbs_dequeue_soft()
214 	 * amount of q->credits.  in cbs_dequeue_soft()
216 	credits = credits_from_len(len, q->sendslope,  in cbs_dequeue_soft()
218 	credits += q->credits;  in cbs_dequeue_soft()
220 	q->credits = max_t(s64, credits, q->locredit);  in cbs_dequeue_soft()