42  * it briefly enters PROBE_RTT to cut inflight to a minimum value to re-probe
85 	BBR_PROBE_RTT,	/* cut inflight to min to probe min_rtt */
405 	/* Ensure gain cycling gets inflight above BDP even for small BDPs. */  in bbr_quantization_budget()
412 /* Find inflight based on min RTT and the estimated bottleneck bandwidth. */
415 	u32 inflight;  in bbr_inflight()  local
417 	inflight = bbr_bdp(sk, bw, gain);  in bbr_inflight()
418 	inflight = bbr_quantization_budget(sk, inflight);  in bbr_inflight()
420 	return inflight;  in bbr_inflight()
427  * inflight level that it estimates has already been "baked in" by previous
432  * If we're increasing inflight, then we want to know if the transmit of the
433  * EDT skb will push inflight above the target, so inflight_at_edt includes
434  * bbr_tso_segs_goal() from the skb departing at EDT. If decreasing inflight,
435  * then estimate if inflight will sink too low just before the EDT transmit.
449 	if (bbr->pacing_gain > BBR_UNIT)              /* increasing inflight */  in bbr_packets_in_net_at_edt()
562 	u32 inflight, bw;  in bbr_is_next_cycle_phase()  local
570 	inflight = bbr_packets_in_net_at_edt(sk, rs->prior_in_flight);  in bbr_is_next_cycle_phase()
573 	/* A pacing_gain > 1.0 probes for bw by trying to raise inflight to at  in bbr_is_next_cycle_phase()
581 			 inflight >= bbr_inflight(sk, bw, bbr->pacing_gain));  in bbr_is_next_cycle_phase()
584 	 * probing didn't find more bw. If inflight falls to match BDP then we  in bbr_is_next_cycle_phase()
588 		inflight <= bbr_inflight(sk, bw, BBR_UNIT);  in bbr_is_next_cycle_phase()