60 	one with rate P (peak rate) and depth M (equal to link MTU)
88 	Note that the peak rate TBF is much more tough: with MTU 1500
101 	s64		buffer;		/* Token bucket depth/rate: MUST BE >= MTU/B */
102 	s64		mtu;  member
272 			if (ptoks > q->mtu)  in tbf_dequeue()
273 				ptoks = q->mtu;  in tbf_dequeue()
323 	q->ptokens = q->mtu;  in tbf_reset()
348 	s64 buffer, mtu;  in tbf_change()  local
372 	mtu = min_t(u64, PSCHED_TICKS2NS(qopt->mtu), ~0U);  in tbf_change()
399 			mtu = psched_l2t_ns(&peak, pburst);  in tbf_change()
401 			max_size = min_t(u64, max_size, psched_ns_t2l(&peak, mtu));  in tbf_change()
408 		pr_warn_ratelimited("sch_tbf: burst %llu is lower than device %s mtu (%u) !\n",  in tbf_change()
441 		q->mtu = mtu;  in tbf_change()
443 		q->mtu = PSCHED_TICKS2NS(qopt->mtu);  in tbf_change()
450 	q->ptokens = q->mtu;  in tbf_change()
509 	opt.mtu = PSCHED_NS2TICKS(q->mtu);  in tbf_dump()