1 /*-
2  * Copyright (c) 2016-2020 Netflix, Inc.
162  * - Matt Mathis's Rate Halving which slowly drops
165  * - Yuchung Cheng's RACK TCP (for which its named) that
168  * - Reorder Detection of RFC4737 and the Tail-Loss probe draft
183  * switches on the state) and all tests for SACK are gone. This
186  * TCP output is also over-written with a new version since it
191 static int32_t rack_tlp_limit = 2;	/* No more than 2 TLPs w-out new data */
194 static int32_t rack_reorder_fade = 60000000;	/* 0 - never fade, def 60,000,000
195 						 * - 60 seconds */
199 static uint8_t rack_ssthresh_rest_rto_rec = 0; /* Do we restore ssthresh when we have rec -> rto ->…
217 static int32_t rack_hw_rate_cap_per = 0;	/* 0 -- off  */
253 static int32_t rack_non_rxt_use_cr = 0; /* does a non-rxt in recovery use the configured rate (ss/c…
258 static int32_t rack_sack_not_required = 1;	/* set to one to allow non-sack to use rack */
265 static int32_t rack_hw_check_queue = 0;		/* Do we always pre-check queue depth of a hw queue */
295 static uint16_t rack_per_of_gp_ss = 250;	/* 250 % slow-start */
296 static uint16_t rack_per_of_gp_ca = 200;	/* 200 % congestion-avoidance */
311 static uint32_t rack_probe_rtt_safety_val = 2000000;	/* No more than 2 sec in probe-rtt */
313 static uint32_t rack_probertt_gpsrtt_cnt_mul = 0;	/* How many srtt periods does probe-rtt last top …
314 static uint32_t rack_probertt_gpsrtt_cnt_div = 0;	/* How many srtt periods does probe-rtt last bott…
333  * the way fill-cw interacts with timely and caps how much
334  * timely can boost the fill-cw b/w.
340  * probeRTT as well as fixed-rate-pacing.
434 #define	RACK_REXMTVAL(tp) max(rack_rto_min, ((tp)->t_srtt + ((tp)->t_rttvar << 2)))
605 	tim = rack->r_ctl.lt_bw_time;  in rack_get_lt_bw()
606 	bytes = rack->r_ctl.lt_bw_bytes;  in rack_get_lt_bw()
607 	if (rack->lt_bw_up) {  in rack_get_lt_bw()
610 		bytes += (rack->rc_tp->snd_una - rack->r_ctl.lt_seq);  in rack_get_lt_bw()
611 		tim += (tcp_tv_to_lusectick(&tv) - rack->r_ctl.lt_timemark);  in rack_get_lt_bw()
628 	tp = rack->rc_tp;  in rack_swap_beta_values()
629 	if (tp->t_cc == NULL) {  in rack_swap_beta_values()
633 	rack->rc_pacing_cc_set = 1;  in rack_swap_beta_values()
634 	if (strcmp(tp->t_cc->name, CCALGONAME_NEWRENO) != 0) {  in rack_swap_beta_values()
635 		/* Not new-reno we can't play games with beta! */  in rack_swap_beta_values()
640 	if (CC_ALGO(tp)->ctl_output == NULL)  {  in rack_swap_beta_values()
641 		/* Huh, not using new-reno so no swaps.? */  in rack_swap_beta_values()
649 	error = CC_ALGO(tp)->ctl_output(&tp->t_ccv, &sopt, &opt);  in rack_swap_beta_values()
656 	error = CC_ALGO(tp)->ctl_output(&tp->t_ccv, &sopt, &opt);  in rack_swap_beta_values()
666 	opt.val = rack->r_ctl.rc_saved_beta.beta;  in rack_swap_beta_values()
667 	error = CC_ALGO(tp)->ctl_output(&tp->t_ccv, &sopt, &opt);  in rack_swap_beta_values()
673 	opt.val = rack->r_ctl.rc_saved_beta.beta_ecn;  in rack_swap_beta_values()
674 	error = CC_ALGO(tp)->ctl_output(&tp->t_ccv, &sopt, &opt);  in rack_swap_beta_values()
680 	memcpy(&rack->r_ctl.rc_saved_beta, &old, sizeof(struct newreno));  in rack_swap_beta_values()
682 	if (rack_verbose_logging && tcp_bblogging_on(rack->rc_tp)) {  in rack_swap_beta_values()
687 		ptr = ((struct newreno *)tp->t_ccv.cc_data);  in rack_swap_beta_values()
690 		log.u_bbr.flex1 = ptr->beta;  in rack_swap_beta_values()
691 		log.u_bbr.flex2 = ptr->beta_ecn;  in rack_swap_beta_values()
692 		log.u_bbr.flex3 = ptr->newreno_flags;  in rack_swap_beta_values()
693 		log.u_bbr.flex4 = rack->r_ctl.rc_saved_beta.beta;  in rack_swap_beta_values()
694 		log.u_bbr.flex5 = rack->r_ctl.rc_saved_beta.beta_ecn;  in rack_swap_beta_values()
696 		log.u_bbr.flex7 = rack->gp_ready;  in rack_swap_beta_values()
698 		log.u_bbr.flex7 |= rack->use_fixed_rate;  in rack_swap_beta_values()
700 		log.u_bbr.flex7 |= rack->rc_pacing_cc_set;  in rack_swap_beta_values()
701 		log.u_bbr.pkts_out = rack->r_ctl.rc_prr_sndcnt;  in rack_swap_beta_values()
711 	if (rack->rc_pacing_cc_set)  in rack_set_cc_pacing()
717 	rack->rc_pacing_cc_set = 1;  in rack_set_cc_pacing()
724 	if (rack->rc_pacing_cc_set == 0)  in rack_undo_cc_pacing()
730 	rack->rc_pacing_cc_set = 0;  in rack_undo_cc_pacing()
737 	if (rack->rc_pacing_cc_set)  in rack_remove_pacing()
739 	if (rack->r_ctl.pacing_method & RACK_REG_PACING)  in rack_remove_pacing()
741 	if (rack->r_ctl.pacing_method & RACK_DGP_PACING)  in rack_remove_pacing()
743 	rack->rc_always_pace = 0;  in rack_remove_pacing()
744 	rack->r_ctl.pacing_method = RACK_PACING_NONE;  in rack_remove_pacing()
745 	rack->dgp_on = 0;  in rack_remove_pacing()
746 	rack->rc_hybrid_mode = 0;  in rack_remove_pacing()
747 	rack->use_fixed_rate = 0;  in rack_remove_pacing()
754 	if (tcp_bblogging_on(rack->rc_tp) && (rack_verbose_logging != 0)) {  in rack_log_gpset()
760 		log.u_bbr.flex2 = rack->rc_tp->gput_seq;  in rack_log_gpset()
762 		log.u_bbr.flex4 = rack->rc_tp->gput_ts;  in rack_log_gpset()
764 		log.u_bbr.flex6 = rack->rc_tp->gput_ack;  in rack_log_gpset()
767 		log.u_bbr.rttProp = rack->r_ctl.rc_gp_cumack_ts;  in rack_log_gpset()
768 		log.u_bbr.delRate = rack->r_ctl.rc_gp_output_ts;  in rack_log_gpset()
770 		log.u_bbr.cwnd_gain = rack->app_limited_needs_set;  in rack_log_gpset()
771 		log.u_bbr.pkt_epoch = rack->r_ctl.rc_app_limited_cnt;  in rack_log_gpset()
772 		log.u_bbr.epoch = rack->r_ctl.current_round;  in rack_log_gpset()
773 		log.u_bbr.lt_epoch = rack->r_ctl.rc_considered_lost;  in rack_log_gpset()
775 			log.u_bbr.applimited = rsm->r_start;  in rack_log_gpset()
776 			log.u_bbr.delivered = rsm->r_end;  in rack_log_gpset()
777 			log.u_bbr.epoch = rsm->r_flags;  in rack_log_gpset()
780 		TCP_LOG_EVENTP(rack->rc_tp, NULL,  in rack_log_gpset()
781 		    &rack->rc_inp->inp_socket->so_rcv,  in rack_log_gpset()
782 		    &rack->rc_inp->inp_socket->so_snd,  in rack_log_gpset()
795 	if (error || req->newptr == NULL)  in sysctl_rack_clear()
918 	    "What percentage above goodput do we clamp CA/SS to at exit on high-BDP path 110%");  in rack_init_sysctls()
923 	    "What percentage above goodput do we clamp CA/SS to at exit on a non high-BDP path 100%");  in rack_init_sysctls()
968 	    "Should we use the min-rtt to calculate the goal rtt (else gp_srtt) at entry");  in rack_init_sysctls()
973 	    "How to set cwnd at exit, 0 - dynamic, 1 - use min-rtt, 2 - use curgprtt, 3 - entry gp-rtt");  in rack_init_sysctls()
998 	    "If the rtt goes lower within this percentage of the time, go into probe-rtt");  in rack_init_sysctls()
1008 	    "Do we clear I/S counts on exiting probe-rtt");  in rack_init_sysctls()
1018 	    "We are highly buffered if min_rtt_seen / max_rtt_seen > this-threshold");  in rack_init_sysctls()
1197 	    "If we fall below this rate, dis-engage hw pacing?");  in rack_init_sysctls()
1353 	    "What method do we do for TLP time calc 0=no-de-ack-comp, 1=ID, 2=2.1, 3=2.2");  in rack_init_sysctls()
1373 	    "Should we always send the oldest TLP and RACK-TLP");  in rack_init_sysctls()
1411 	    "When doing recovery -> rto -> recovery do we reset SSthresh?");  in rack_init_sysctls()
1446 	    "Minimum RTO in microseconds -- set with caution below 1000 due to TLP");  in rack_init_sysctls()
1451 	    "Maximum RTO in microseconds -- should be at least as large as min_rto");  in rack_init_sysctls()
1473 	    "Does a cwnd just-return end the measurement window (app limited)");  in rack_init_sysctls()
1478 	    "Does an rwnd just-return end the measurement window (app limited -- not persists)");  in rack_init_sysctls()
1535 	    "Should RACK use mbuf queuing for non-paced connections");  in rack_init_sysctls()
1579 …  "When a persist or keep-alive probe is not answered do we calculate rtt on subsequent answers?");  in rack_init_sysctls()
1663 	    "Highest move to non-move ratio seen");  in rack_init_sysctls()
1804 	    "Total number of times a sends returned enobuf for non-hdwr paced connections");  in rack_init_sysctls()
2001 	return (tcp_compute_initwnd(tcp_maxseg(rack->rc_tp)));  in rc_init_window()
2008 	if (IN_FASTRECOVERY(rack->rc_tp->t_flags))  in rack_get_fixed_pacing_bw()
2009 		return (rack->r_ctl.rc_fixed_pacing_rate_rec);  in rack_get_fixed_pacing_bw()
2010 	else if (rack->r_ctl.cwnd_to_use < rack->rc_tp->snd_ssthresh)  in rack_get_fixed_pacing_bw()
2011 		return (rack->r_ctl.rc_fixed_pacing_rate_ss);  in rack_get_fixed_pacing_bw()
2013 		return (rack->r_ctl.rc_fixed_pacing_rate_ca);  in rack_get_fixed_pacing_bw()
2035 			do_log = tcp_bblogging_on(rack->rc_tp);  in rack_log_hybrid_bw()
2043 		do_log = tcp_bblogging_on(rack->rc_tp);  in rack_log_hybrid_bw()
2045 		do_log = tcp_bblogging_point_on(rack->rc_tp, TCP_BBPOINT_REQ_LEVEL_LOGGING);  in rack_log_hybrid_bw()
2070 			cur = rack->r_ctl.rc_last_sft;  in rack_log_hybrid_bw()
2072 		if (rack->r_ctl.rack_rs.rs_flags != RACK_RTT_EMPTY)  in rack_log_hybrid_bw()
2073 			log.u_bbr.inflight = rack->r_ctl.rack_rs.rs_us_rtt;  in rack_log_hybrid_bw()
2075 			/* Use the last known rtt i.e. the rack-rtt */  in rack_log_hybrid_bw()
2076 			log.u_bbr.inflight = rack->rc_rack_rtt;  in rack_log_hybrid_bw()
2081 			log.u_bbr.cur_del_rate = cur->deadline;  in rack_log_hybrid_bw()
2084 				log.u_bbr.pkt_epoch = (uint32_t)(cur->start & 0x00000000ffffffff);  in rack_log_hybrid_bw()
2085 				log.u_bbr.lost = (uint32_t)((cur->start >> 32) & 0x00000000ffffffff);  in rack_log_hybrid_bw()
2086 				log.u_bbr.flex6 = cur->start_seq;  in rack_log_hybrid_bw()
2087 				log.u_bbr.pkts_out = cur->end_seq;  in rack_log_hybrid_bw()
2090 				log.u_bbr.pkt_epoch = (uint32_t)(cur->start & 0x00000000ffffffff);  in rack_log_hybrid_bw()
2091 				log.u_bbr.lost = (uint32_t)((cur->start >> 32) & 0x00000000ffffffff);  in rack_log_hybrid_bw()
2093 				log.u_bbr.flex6 = (uint32_t)(cur->end & 0x00000000ffffffff);  in rack_log_hybrid_bw()
2094 				log.u_bbr.pkts_out = (uint32_t)((cur->end >> 32) & 0x00000000ffffffff);  in rack_log_hybrid_bw()
2097 			log.u_bbr.epoch = (uint32_t)(cur->first_send & 0x00000000ffffffff);  in rack_log_hybrid_bw()
2098 			log.u_bbr.lt_epoch = (uint32_t)((cur->first_send >> 32) & 0x00000000ffffffff);  in rack_log_hybrid_bw()
2100 			log.u_bbr.applimited = (uint32_t)(cur->localtime & 0x00000000ffffffff);  in rack_log_hybrid_bw()
2101 			log.u_bbr.delivered = (uint32_t)((cur->localtime >> 32) & 0x00000000ffffffff);  in rack_log_hybrid_bw()
2103 			off = (uint64_t)(cur) - (uint64_t)(&rack->rc_tp->t_tcpreq_info[0]);  in rack_log_hybrid_bw()
2107 			log.u_bbr.flex4 = (uint32_t)(rack->rc_tp->t_sndbytes - cur->sent_at_fs);  in rack_log_hybrid_bw()
2108 			log.u_bbr.flex5 = (uint32_t)(rack->rc_tp->t_snd_rxt_bytes - cur->rxt_at_fs);  in rack_log_hybrid_bw()
2109 			log.u_bbr.flex7 = (uint16_t)cur->hybrid_flags;  in rack_log_hybrid_bw()
2121 		log.u_bbr.bbr_state = rack->rc_always_pace;  in rack_log_hybrid_bw()
2123 		log.u_bbr.bbr_state |= rack->dgp_on;  in rack_log_hybrid_bw()
2125 		log.u_bbr.bbr_state |= rack->rc_hybrid_mode;  in rack_log_hybrid_bw()
2127 		log.u_bbr.bbr_state |= rack->use_fixed_rate;  in rack_log_hybrid_bw()
2129 		tcp_log_event(rack->rc_tp, NULL,  in rack_log_hybrid_bw()
2130 		    &rack->rc_inp->inp_socket->so_rcv,  in rack_log_hybrid_bw()
2131 		    &rack->rc_inp->inp_socket->so_snd,  in rack_log_hybrid_bw()
2143 	if (tcp_bblogging_point_on(rack->rc_tp, TCP_BBPOINT_REQ_LEVEL_LOGGING)) {  in rack_log_hybrid_sends()
2152 		log.u_bbr.delRate = cur->sent_at_fs;  in rack_log_hybrid_sends()
2154 		if ((cur->flags & TCP_TRK_TRACK_FLG_LSND) == 0) {  in rack_log_hybrid_sends()
2160 			log.u_bbr.cur_del_rate = rack->rc_tp->t_sndbytes;  in rack_log_hybrid_sends()
2161 			log.u_bbr.rttProp = rack->rc_tp->t_snd_rxt_bytes;  in rack_log_hybrid_sends()
2167 			log.u_bbr.cur_del_rate = cur->sent_at_ls;  in rack_log_hybrid_sends()
2168 			log.u_bbr.rttProp = cur->rxt_at_ls;  in rack_log_hybrid_sends()
2170 		log.u_bbr.bw_inuse = cur->rxt_at_fs;  in rack_log_hybrid_sends()
2172 		off = (uint64_t)(cur) - (uint64_t)(&rack->rc_tp->t_tcpreq_info[0]);  in rack_log_hybrid_sends()
2175 		log.u_bbr.flex2 = (uint32_t)(cur->start & 0x00000000ffffffff);  in rack_log_hybrid_sends()
2176 		log.u_bbr.flex1 = (uint32_t)((cur->start >> 32) & 0x00000000ffffffff);  in rack_log_hybrid_sends()
2178 		log.u_bbr.flex4 = (uint32_t)(cur->end & 0x00000000ffffffff);  in rack_log_hybrid_sends()
2179 		log.u_bbr.flex3 = (uint32_t)((cur->end >> 32) & 0x00000000ffffffff);  in rack_log_hybrid_sends()
2182 		log.u_bbr.applimited = (uint32_t)(cur->localtime & 0x00000000ffffffff);  in rack_log_hybrid_sends()
2183 		log.u_bbr.delivered = (uint32_t)((cur->localtime >> 32) & 0x00000000ffffffff);  in rack_log_hybrid_sends()
2185 		log.u_bbr.epoch = (uint32_t)(cur->timestamp & 0x00000000ffffffff);  in rack_log_hybrid_sends()
2186 		log.u_bbr.lt_epoch = (uint32_t)((cur->timestamp >> 32) & 0x00000000ffffffff);  in rack_log_hybrid_sends()
2188 		log.u_bbr.pkts_out = cur->hybrid_flags;  in rack_log_hybrid_sends()
2189 		log.u_bbr.lost = cur->playout_ms;  in rack_log_hybrid_sends()
2190 		log.u_bbr.flex6 = cur->flags;  in rack_log_hybrid_sends()
2193 		 * where a false retransmit occurred so first_send  <-> lastsend may  in rack_log_hybrid_sends()
2196 		log.u_bbr.pkt_epoch = (uint32_t)(rack->r_ctl.last_tmit_time_acked & 0x00000000ffffffff);  in rack_log_hybrid_sends()
2197 		log.u_bbr.flex5 = (uint32_t)((rack->r_ctl.last_tmit_time_acked >> 32) & 0x00000000ffffffff);  in rack_log_hybrid_sends()
2205 		log.u_bbr.bbr_state = rack->rc_always_pace;  in rack_log_hybrid_sends()
2207 		log.u_bbr.bbr_state |= rack->dgp_on;  in rack_log_hybrid_sends()
2209 		log.u_bbr.bbr_state |= rack->rc_hybrid_mode;  in rack_log_hybrid_sends()
2211 		log.u_bbr.bbr_state |= rack->use_fixed_rate;  in rack_log_hybrid_sends()
2214 		tcp_log_event(rack->rc_tp, NULL,  in rack_log_hybrid_sends()
2215 		    &rack->rc_inp->inp_socket->so_rcv,  in rack_log_hybrid_sends()
2216 		    &rack->rc_inp->inp_socket->so_snd,  in rack_log_hybrid_sends()
2229 	ether = rack->rc_tp->t_maxseg + sizeof(struct tcphdr);  in rack_compensate_for_linerate()
2230 	if (rack->r_is_v6){  in rack_compensate_for_linerate()
2241 	u_segsiz = (uint64_t)min(ctf_fixed_maxseg(rack->rc_tp), rack->r_ctl.rc_pace_min_segs);  in rack_compensate_for_linerate()
2256 	if (rack->r_ctl.bw_rate_cap == 0)  in rack_rate_cap_bw()
2259 	if (rack->rc_catch_up && rack->rc_hybrid_mode &&  in rack_rate_cap_bw()
2260 	    (rack->r_ctl.rc_last_sft != NULL)) {  in rack_rate_cap_bw()
2268       		ent = rack->r_ctl.rc_last_sft;  in rack_rate_cap_bw()
2271 		if (timenow >= ent->deadline) {  in rack_rate_cap_bw()
2273 			rack_log_hybrid_bw(rack, rack->rc_tp->snd_max,  in rack_rate_cap_bw()
2275 			rack->r_ctl.bw_rate_cap = 0;  in rack_rate_cap_bw()
2279 		timeleft = rack->r_ctl.rc_last_sft->deadline - timenow;  in rack_rate_cap_bw()
2282 			rack_log_hybrid_bw(rack, rack->rc_tp->snd_max,  in rack_rate_cap_bw()
2284 			rack->r_ctl.bw_rate_cap = 0;  in rack_rate_cap_bw()
2293 		if (ent->flags & TCP_TRK_TRACK_FLG_COMP) {  in rack_rate_cap_bw()
2294 			if (SEQ_GT(ent->end_seq, rack->rc_tp->snd_una))  in rack_rate_cap_bw()
2295 				lenleft = ent->end_seq - rack->rc_tp->snd_una;  in rack_rate_cap_bw()
2298 				rack_log_hybrid_bw(rack, rack->rc_tp->snd_max,  in rack_rate_cap_bw()
2300 				rack->r_ctl.bw_rate_cap = 0;  in rack_rate_cap_bw()
2305 			 * The hard way, figure out how much is gone and then  in rack_rate_cap_bw()
2309 			if (SEQ_GT(rack->rc_tp->snd_una, ent->start_seq))  in rack_rate_cap_bw()
2310 				lengone = rack->rc_tp->snd_una - ent->start_seq;  in rack_rate_cap_bw()
2313 			if (lengone < (ent->end - ent->start))  in rack_rate_cap_bw()
2314 				lenleft = (ent->end - ent->start) - lengone;  in rack_rate_cap_bw()
2317 				rack_log_hybrid_bw(rack, rack->rc_tp->snd_max,  in rack_rate_cap_bw()
2319 				rack->r_ctl.bw_rate_cap = 0;  in rack_rate_cap_bw()
2325 			rack_log_hybrid_bw(rack, rack->rc_tp->snd_max,  in rack_rate_cap_bw()
2327 			if (rack->r_ctl.bw_rate_cap)  in rack_rate_cap_bw()
2337 		rack->r_ctl.bw_rate_cap = calcbw;  in rack_rate_cap_bw()
2338 		if ((rack->r_ctl.rc_last_sft->hybrid_flags & TCP_HYBRID_PACING_S_MSS) &&  in rack_rate_cap_bw()
2340 		    ((rack->r_ctl.rc_last_sft->hybrid_flags & TCP_HYBRID_PACING_SETMSS) == 0)) {  in rack_rate_cap_bw()
2341 			/* Lets set in a smaller mss possibly here to match our rate-cap */  in rack_rate_cap_bw()
2344 			orig_max = rack->r_ctl.rc_pace_max_segs;  in rack_rate_cap_bw()
2345 			rack->r_ctl.rc_last_sft->hybrid_flags |= TCP_HYBRID_PACING_SETMSS;  in rack_rate_cap_bw()
2346 			rack->r_ctl.rc_pace_max_segs = rack_get_pacing_len(rack, calcbw, ctf_fixed_maxseg(rack->rc_tp));  in rack_rate_cap_bw()
2347 …rack_log_type_pacing_sizes(rack->rc_tp, rack, rack->r_ctl.client_suggested_maxseg, orig_max, __LIN…  in rack_rate_cap_bw()
2349 		rack_log_hybrid_bw(rack, rack->rc_tp->snd_max,  in rack_rate_cap_bw()
2352 			rack_log_hybrid_bw(rack, rack->rc_tp->snd_max,  in rack_rate_cap_bw()
2353 					   *bw, ent->deadline, lenleft, HYBRID_LOG_RATE_CAP, 0, ent, __LINE__);  in rack_rate_cap_bw()
2361 	if ((rack->r_ctl.bw_rate_cap > 0) && (*bw > rack->r_ctl.bw_rate_cap)) {  in rack_rate_cap_bw()
2363 		if (rack->rc_hybrid_mode &&  in rack_rate_cap_bw()
2364 		    rack->rc_catch_up &&  in rack_rate_cap_bw()
2365 		    (rack->r_ctl.rc_last_sft != NULL) &&  in rack_rate_cap_bw()
2366 		    (rack->r_ctl.rc_last_sft->hybrid_flags & TCP_HYBRID_PACING_S_MSS) &&  in rack_rate_cap_bw()
2368 		    ((rack->r_ctl.rc_last_sft->hybrid_flags & TCP_HYBRID_PACING_SETMSS) == 0)) {  in rack_rate_cap_bw()
2369 			/* Lets set in a smaller mss possibly here to match our rate-cap */  in rack_rate_cap_bw()
2372 			orig_max = rack->r_ctl.rc_pace_max_segs;  in rack_rate_cap_bw()
2373 			rack->r_ctl.rc_last_sft->hybrid_flags |= TCP_HYBRID_PACING_SETMSS;  in rack_rate_cap_bw()
2374 …rack->r_ctl.rc_pace_max_segs = rack_get_pacing_len(rack, rack->r_ctl.bw_rate_cap, ctf_fixed_maxseg…  in rack_rate_cap_bw()
2375 …rack_log_type_pacing_sizes(rack->rc_tp, rack, rack->r_ctl.client_suggested_maxseg, orig_max, __LIN…  in rack_rate_cap_bw()
2379 		*bw = rack->r_ctl.bw_rate_cap;  in rack_rate_cap_bw()
2380 		rack_log_hybrid_bw(rack, rack->rc_tp->snd_max,  in rack_rate_cap_bw()
2391 	if (rack->rc_gp_filled == 0) {  in rack_get_gp_est()
2405 		if (rack->dis_lt_bw == 1)  in rack_get_gp_est()
2411 			 * No goodput bw but a long-term b/w does exist  in rack_get_gp_est()
2417 		if (rack->r_ctl.init_rate)  in rack_get_gp_est()
2418 			return (rack->r_ctl.init_rate);  in rack_get_gp_est()
2421 		if (rack->rc_tp->t_srtt == 0) {  in rack_get_gp_est()
2429 		bw = tcp_compute_initwnd(tcp_maxseg(rack->rc_tp));  in rack_get_gp_est()
2430 		srtt = (uint64_t)rack->rc_tp->t_srtt;  in rack_get_gp_est()
2437 	if (rack->r_ctl.num_measurements >= RACK_REQ_AVG) {  in rack_get_gp_est()
2439 		bw = rack->r_ctl.gp_bw;  in rack_get_gp_est()
2442 		bw = rack->r_ctl.gp_bw / max(rack->r_ctl.num_measurements, 1);  in rack_get_gp_est()
2444 	if (rack->dis_lt_bw) {  in rack_get_gp_est()
2445 		/* We are not using lt-bw */  in rack_get_gp_est()
2452 		lt_bw = rack->r_ctl.gp_bw;  in rack_get_gp_est()
2454 	if (rack->use_lesser_lt_bw) {  in rack_get_gp_est()
2486 	if (rack->use_fixed_rate) {  in rack_get_bw()
2497 	if (rack->use_fixed_rate) {  in rack_get_output_gain()
2499 	} else if (rack->in_probe_rtt && (rsm == NULL))  in rack_get_output_gain()
2500 		return (rack->r_ctl.rack_per_of_gp_probertt);  in rack_get_output_gain()
2501 	else if ((IN_FASTRECOVERY(rack->rc_tp->t_flags) &&  in rack_get_output_gain()
2502 		  rack->r_ctl.rack_per_of_gp_rec)) {  in rack_get_output_gain()
2505 			return (rack->r_ctl.rack_per_of_gp_rec);  in rack_get_output_gain()
2506 		} else if (rack->rack_rec_nonrxt_use_cr) {  in rack_get_output_gain()
2509 		} else if (rack->rack_no_prr &&  in rack_get_output_gain()
2510 			   (rack->r_ctl.rack_per_of_gp_rec > 100)) {  in rack_get_output_gain()
2515 			 * Here we may have a non-retransmit but we  in rack_get_output_gain()
2519 			return (rack->r_ctl.rack_per_of_gp_rec);  in rack_get_output_gain()
2524 	if (rack->r_ctl.cwnd_to_use < rack->rc_tp->snd_ssthresh)  in rack_get_output_gain()
2525 		return (rack->r_ctl.rack_per_of_gp_ss);  in rack_get_output_gain()
2527 		return (rack->r_ctl.rack_per_of_gp_ca);  in rack_get_output_gain()
2535 	 * 1 = dsack_persists reduced by 1 via T-O or fast recovery exit.  in rack_log_dsack_event()
2542 	if (tcp_bblogging_on(rack->rc_tp)) {  in rack_log_dsack_event()
2547 		log.u_bbr.flex1 = rack->rc_rack_tmr_std_based;  in rack_log_dsack_event()
2549 		log.u_bbr.flex1 |= rack->rc_rack_use_dsack;  in rack_log_dsack_event()
2551 		log.u_bbr.flex1 |= rack->rc_dsack_round_seen;  in rack_log_dsack_event()
2552 		log.u_bbr.flex2 = rack->r_ctl.dsack_round_end;  in rack_log_dsack_event()
2553 		log.u_bbr.flex3 = rack->r_ctl.num_dsack;  in rack_log_dsack_event()
2557 		log.u_bbr.flex7 = rack->r_ctl.dsack_persist;  in rack_log_dsack_event()
2560 		log.u_bbr.epoch = rack->r_ctl.current_round;  in rack_log_dsack_event()
2561 		log.u_bbr.lt_epoch = rack->r_ctl.rc_considered_lost;  in rack_log_dsack_event()
2562 		TCP_LOG_EVENTP(rack->rc_tp, NULL,  in rack_log_dsack_event()
2563 		    &rack->rc_inp->inp_socket->so_rcv,  in rack_log_dsack_event()
2564 		    &rack->rc_inp->inp_socket->so_snd,  in rack_log_dsack_event()
2575 	if (tcp_bblogging_on(rack->rc_tp)) {  in rack_log_hdwr_pacing()
2584 		if (rack->r_ctl.crte) {  in rack_log_hdwr_pacing()
2585 			ifp = rack->r_ctl.crte->ptbl->rs_ifp;  in rack_log_hdwr_pacing()
2586 		} else if (rack->rc_inp->inp_route.ro_nh &&  in rack_log_hdwr_pacing()
2587 			   rack->rc_inp->inp_route.ro_nh->nh_ifp) {  in rack_log_hdwr_pacing()
2588 			ifp = rack->rc_inp->inp_route.ro_nh->nh_ifp;  in rack_log_hdwr_pacing()
2601 		log.u_bbr.applimited = rack->r_ctl.rc_pace_max_segs;  in rack_log_hdwr_pacing()
2602 		log.u_bbr.flex8 = rack->use_fixed_rate;  in rack_log_hdwr_pacing()
2604 		log.u_bbr.flex8 |= rack->rack_hdrw_pacing;  in rack_log_hdwr_pacing()
2605 		log.u_bbr.pkts_out = rack->rc_tp->t_maxseg;  in rack_log_hdwr_pacing()
2606 		log.u_bbr.delRate = rack->r_ctl.crte_prev_rate;  in rack_log_hdwr_pacing()
2607 		if (rack->r_ctl.crte)  in rack_log_hdwr_pacing()
2608 			log.u_bbr.cur_del_rate = rack->r_ctl.crte->rate;  in rack_log_hdwr_pacing()
2611 		log.u_bbr.rttProp = rack->r_ctl.last_hw_bw_req;  in rack_log_hdwr_pacing()
2612 		log.u_bbr.epoch = rack->r_ctl.current_round;  in rack_log_hdwr_pacing()
2613 		log.u_bbr.lt_epoch = rack->r_ctl.rc_considered_lost;  in rack_log_hdwr_pacing()
2614 		TCP_LOG_EVENTP(rack->rc_tp, NULL,  in rack_log_hdwr_pacing()
2615 		    &rack->rc_inp->inp_socket->so_rcv,  in rack_log_hdwr_pacing()
2616 		    &rack->rc_inp->inp_socket->so_snd,  in rack_log_hdwr_pacing()
2637 	if (rack->r_rack_hw_rate_caps) {  in rack_get_output_bw()
2639 		if (rack->r_ctl.crte != NULL) {  in rack_get_output_bw()
2641 			high_rate = tcp_hw_highest_rate(rack->r_ctl.crte);  in rack_get_output_bw()
2646 					rack->r_rack_hw_rate_caps = 0;  in rack_get_output_bw()
2656 		} else if ((rack->rack_hdrw_pacing == 0) &&  in rack_get_output_bw()
2657 			   (rack->rack_hdw_pace_ena) &&  in rack_get_output_bw()
2658 			   (rack->rack_attempt_hdwr_pace == 0) &&  in rack_get_output_bw()
2659 			   (rack->rc_inp->inp_route.ro_nh != NULL) &&  in rack_get_output_bw()
2660 			   (rack->rc_inp->inp_route.ro_nh->nh_ifp != NULL)) {  in rack_get_output_bw()
2668 			high_rate = tcp_hw_highest_rate_ifp(rack->rc_inp->inp_route.ro_nh->nh_ifp, rack->rc_inp);  in rack_get_output_bw()
2686 	if (tcp_bblogging_on(rack->rc_tp)) {  in rack_log_retran_reason()
2693 			 * 1 - We are retransmitting and this tells the reason.  in rack_log_retran_reason()
2694 			 * 2 - We are clearing a dup-ack count.  in rack_log_retran_reason()
2695 			 * 3 - We are incrementing a dup-ack count.  in rack_log_retran_reason()
2705 		log.u_bbr.flex3 = rsm->r_flags;  in rack_log_retran_reason()
2706 		log.u_bbr.flex4 = rsm->r_dupack;  in rack_log_retran_reason()
2707 		log.u_bbr.flex5 = rsm->r_start;  in rack_log_retran_reason()
2708 		log.u_bbr.flex6 = rsm->r_end;  in rack_log_retran_reason()
2710 		log.u_bbr.inhpts = tcp_in_hpts(rack->rc_tp);  in rack_log_retran_reason()
2712 		log.u_bbr.inflight = ctf_flight_size(rack->rc_tp, rack->r_ctl.rc_sacked);  in rack_log_retran_reason()
2713 		log.u_bbr.pkts_out = rack->r_ctl.rc_out_at_rto;  in rack_log_retran_reason()
2714 		log.u_bbr.delivered = rack->r_ctl.rc_snd_max_at_rto;  in rack_log_retran_reason()
2715 		log.u_bbr.pacing_gain = rack->r_must_retran;  in rack_log_retran_reason()
2716 		log.u_bbr.epoch = rack->r_ctl.current_round;  in rack_log_retran_reason()
2717 		log.u_bbr.lt_epoch = rack->r_ctl.rc_considered_lost;  in rack_log_retran_reason()
2718 		TCP_LOG_EVENTP(rack->rc_tp, NULL,  in rack_log_retran_reason()
2719 		    &rack->rc_inp->inp_socket->so_rcv,  in rack_log_retran_reason()
2720 		    &rack->rc_inp->inp_socket->so_snd,  in rack_log_retran_reason()
2729 	if (tcp_bblogging_on(rack->rc_tp)) {  in rack_log_to_start()
2734 		log.u_bbr.flex1 = rack->rc_tp->t_srtt;  in rack_log_to_start()
2736 		log.u_bbr.flex3 = rack->r_ctl.rc_hpts_flags;  in rack_log_to_start()
2738 		log.u_bbr.flex5 = rack->rc_tp->t_hpts_slot;  in rack_log_to_start()
2739 		log.u_bbr.flex6 = rack->rc_tp->t_rxtcur;  in rack_log_to_start()
2740 		log.u_bbr.flex7 = rack->rc_in_persist;  in rack_log_to_start()
2742 		if (rack->rack_no_prr)  in rack_log_to_start()
2745 			log.u_bbr.pkts_out = rack->r_ctl.rc_prr_sndcnt;  in rack_log_to_start()
2746 		log.u_bbr.inhpts = tcp_in_hpts(rack->rc_tp);  in rack_log_to_start()
2748 		log.u_bbr.inflight = ctf_flight_size(rack->rc_tp, rack->r_ctl.rc_sacked);  in rack_log_to_start()
2749 		log.u_bbr.pkts_out = rack->r_ctl.rc_out_at_rto;  in rack_log_to_start()
2750 		log.u_bbr.delivered = rack->r_ctl.rc_snd_max_at_rto;  in rack_log_to_start()
2751 		log.u_bbr.pacing_gain = rack->r_must_retran;  in rack_log_to_start()
2752 		log.u_bbr.cwnd_gain = rack->rack_deferred_inited;  in rack_log_to_start()
2753 		log.u_bbr.pkt_epoch = rack->rc_has_collapsed;  in rack_log_to_start()
2754 		log.u_bbr.lt_epoch = rack->rc_tp->t_rxtshift;  in rack_log_to_start()
2756 		log.u_bbr.epoch = rack->r_ctl.roundends;  in rack_log_to_start()
2757 		log.u_bbr.bw_inuse = rack->r_ctl.current_round;  in rack_log_to_start()
2759 		log.u_bbr.bw_inuse |= rack->r_ctl.rc_considered_lost;  in rack_log_to_start()
2760 		log.u_bbr.applimited = rack->rc_tp->t_flags2;  in rack_log_to_start()
2761 		TCP_LOG_EVENTP(rack->rc_tp, NULL,  in rack_log_to_start()
2762 		    &rack->rc_inp->inp_socket->so_rcv,  in rack_log_to_start()
2763 		    &rack->rc_inp->inp_socket->so_snd,  in rack_log_to_start()
2772 	if (tcp_bblogging_on(rack->rc_tp)) {  in rack_log_to_event()
2777 		log.u_bbr.inhpts = tcp_in_hpts(rack->rc_tp);  in rack_log_to_event()
2779 		log.u_bbr.flex1 = rack->r_ctl.rc_rack_min_rtt;  in rack_log_to_event()
2780 		log.u_bbr.flex2 = rack->rc_rack_rtt;  in rack_log_to_event()
2784 			log.u_bbr.flex3 = rsm->r_end - rsm->r_start;  in rack_log_to_event()
2785 		if (rack->rack_no_prr)  in rack_log_to_event()
2788 			log.u_bbr.flex5 = rack->r_ctl.rc_prr_sndcnt;  in rack_log_to_event()
2790 		log.u_bbr.inflight = ctf_flight_size(rack->rc_tp, rack->r_ctl.rc_sacked);  in rack_log_to_event()
2791 		log.u_bbr.pkts_out = rack->r_ctl.rc_out_at_rto;  in rack_log_to_event()
2792 		log.u_bbr.delivered = rack->r_ctl.rc_snd_max_at_rto;  in rack_log_to_event()
2793 		log.u_bbr.pacing_gain = rack->r_must_retran;  in rack_log_to_event()
2794 		log.u_bbr.bw_inuse = rack->r_ctl.current_round;  in rack_log_to_event()
2796 		log.u_bbr.bw_inuse |= rack->r_ctl.rc_considered_lost;  in rack_log_to_event()
2797 		TCP_LOG_EVENTP(rack->rc_tp, NULL,  in rack_log_to_event()
2798 		    &rack->rc_inp->inp_socket->so_rcv,  in rack_log_to_event()
2799 		    &rack->rc_inp->inp_socket->so_snd,  in rack_log_to_event()
2812 	if (rack_verbose_logging && tcp_bblogging_on(rack->rc_tp)) {  in rack_log_map_chg()
2818 		log.u_bbr.inhpts = tcp_in_hpts(rack->rc_tp);  in rack_log_map_chg()
2824 			log.u_bbr.flex1 = prev->r_start;  in rack_log_map_chg()
2825 			log.u_bbr.flex2 = prev->r_end;  in rack_log_map_chg()
2829 			log.u_bbr.flex3 = rsm->r_start;  in rack_log_map_chg()
2830 			log.u_bbr.flex4 = rsm->r_end;  in rack_log_map_chg()
2834 			log.u_bbr.flex5 = next->r_start;  in rack_log_map_chg()
2835 			log.u_bbr.flex6 = next->r_end;  in rack_log_map_chg()
2841 		log.u_bbr.inflight = ctf_flight_size(rack->rc_tp, rack->r_ctl.rc_sacked);  in rack_log_map_chg()
2842 		if (rack->rack_no_prr)  in rack_log_map_chg()
2845 			log.u_bbr.lost = rack->r_ctl.rc_prr_sndcnt;  in rack_log_map_chg()
2846 		log.u_bbr.bw_inuse = rack->r_ctl.current_round;  in rack_log_map_chg()
2848 		log.u_bbr.bw_inuse |= rack->r_ctl.rc_considered_lost;  in rack_log_map_chg()
2849 		TCP_LOG_EVENTP(rack->rc_tp, NULL,  in rack_log_map_chg()
2850 		    &rack->rc_inp->inp_socket->so_rcv,  in rack_log_map_chg()
2851 		    &rack->rc_inp->inp_socket->so_snd,  in rack_log_map_chg()
2865 		log.u_bbr.inhpts = tcp_in_hpts(rack->rc_tp);  in rack_log_rtt_upd()
2868 		log.u_bbr.flex3 = rack->r_ctl.rc_rack_min_rtt;  in rack_log_rtt_upd()
2869 		log.u_bbr.flex4 = rack->r_ctl.rack_rs.rs_rtt_lowest;  in rack_log_rtt_upd()
2870 		log.u_bbr.flex5 = rack->r_ctl.rack_rs.rs_rtt_highest;  in rack_log_rtt_upd()
2871 		log.u_bbr.flex6 = rack->r_ctl.rack_rs.rs_us_rtrcnt;  in rack_log_rtt_upd()
2873 		log.u_bbr.rttProp = (uint64_t)rack->r_ctl.rack_rs.rs_rtt_tot;  in rack_log_rtt_upd()
2874 		log.u_bbr.flex8 = rack->r_ctl.rc_rate_sample_method;  in rack_log_rtt_upd()
2876 		log.u_bbr.delivered = rack->r_ctl.rack_rs.rs_us_rtrcnt;  in rack_log_rtt_upd()
2877 		log.u_bbr.pkts_out = rack->r_ctl.rack_rs.rs_flags;  in rack_log_rtt_upd()
2878 		log.u_bbr.inflight = ctf_flight_size(rack->rc_tp, rack->r_ctl.rc_sacked);  in rack_log_rtt_upd()
2880 			log.u_bbr.pkt_epoch = rsm->r_start;  in rack_log_rtt_upd()
2881 			log.u_bbr.lost = rsm->r_end;  in rack_log_rtt_upd()
2882 			log.u_bbr.cwnd_gain = rsm->r_rtr_cnt;  in rack_log_rtt_upd()
2884 			log.u_bbr.pacing_gain = (uint16_t)rsm->r_flags;  in rack_log_rtt_upd()
2887 			log.u_bbr.pkt_epoch = rack->rc_tp->iss;  in rack_log_rtt_upd()
2893 		log.u_bbr.use_lt_bw = rack->rc_highly_buffered;  in rack_log_rtt_upd()
2895 		log.u_bbr.use_lt_bw |= rack->forced_ack;  in rack_log_rtt_upd()
2897 		log.u_bbr.use_lt_bw |= rack->rc_gp_dyn_mul;  in rack_log_rtt_upd()
2899 		log.u_bbr.use_lt_bw |= rack->in_probe_rtt;  in rack_log_rtt_upd()
2901 		log.u_bbr.use_lt_bw |= rack->measure_saw_probe_rtt;  in rack_log_rtt_upd()
2903 		log.u_bbr.use_lt_bw |= rack->app_limited_needs_set;  in rack_log_rtt_upd()
2905 		log.u_bbr.use_lt_bw |= rack->rc_gp_filled;  in rack_log_rtt_upd()
2907 		log.u_bbr.use_lt_bw |= rack->rc_dragged_bottom;  in rack_log_rtt_upd()
2908 		log.u_bbr.applimited = rack->r_ctl.rc_target_probertt_flight;  in rack_log_rtt_upd()
2909 		log.u_bbr.epoch = rack->r_ctl.rc_time_probertt_starts;  in rack_log_rtt_upd()
2910 		log.u_bbr.lt_epoch = rack->r_ctl.rc_time_probertt_entered;  in rack_log_rtt_upd()
2911 		log.u_bbr.cur_del_rate = rack->r_ctl.rc_lower_rtt_us_cts;  in rack_log_rtt_upd()
2912 		log.u_bbr.delRate = rack->r_ctl.rc_gp_srtt;  in rack_log_rtt_upd()
2913 		log.u_bbr.bw_inuse = tcp_tv_to_usectick(&rack->r_ctl.act_rcv_time);  in rack_log_rtt_upd()
2916 			log.u_bbr.bw_inuse |= ((uint32_t)rsm->r_tim_lastsent[(rsm->r_rtr_cnt-1)]);  in rack_log_rtt_upd()
2918 		    &rack->rc_inp->inp_socket->so_rcv,  in rack_log_rtt_upd()
2919 		    &rack->rc_inp->inp_socket->so_snd,  in rack_log_rtt_upd()
2935 	if (tcp_bblogging_on(rack->rc_tp)) {  in rack_log_rtt_sample()
2942 		log.u_bbr.flex6 = rack->rc_tp->t_rxtcur;  in rack_log_rtt_sample()
2945 		log.u_bbr.inflight = ctf_flight_size(rack->rc_tp, rack->r_ctl.rc_sacked);  in rack_log_rtt_sample()
2946 		log.u_bbr.pkts_out = rack->r_ctl.rc_out_at_rto;  in rack_log_rtt_sample()
2947 		log.u_bbr.delivered = rack->r_ctl.rc_snd_max_at_rto;  in rack_log_rtt_sample()
2948 		log.u_bbr.pacing_gain = rack->r_must_retran;  in rack_log_rtt_sample()
2955 		log.u_bbr.delRate = rack->r_ctl.rack_rs.confidence;  in rack_log_rtt_sample()
2957 		log.u_bbr.delRate |= rack->r_ctl.rack_rs.rs_us_rtt;  in rack_log_rtt_sample()
2961 		log.u_bbr.lt_epoch = rack->r_ctl.timer_slop;  in rack_log_rtt_sample()
2964 		log.u_bbr.rttProp = RACK_REXMTVAL(rack->rc_tp);  in rack_log_rtt_sample()
2965 		log.u_bbr.bw_inuse = rack->r_ctl.act_rcv_time.tv_sec;  in rack_log_rtt_sample()
2967 		log.u_bbr.bw_inuse += rack->r_ctl.act_rcv_time.tv_usec;  in rack_log_rtt_sample()
2968 		TCP_LOG_EVENTP(rack->rc_tp, NULL,  in rack_log_rtt_sample()
2969 		    &rack->rc_inp->inp_socket->so_rcv,  in rack_log_rtt_sample()
2970 		    &rack->rc_inp->inp_socket->so_snd,  in rack_log_rtt_sample()
2979 	if (rack_verbose_logging && tcp_bblogging_on(rack->rc_tp)) {  in rack_log_rtt_sample_calc()
2991 		log.u_bbr.bw_inuse = rack->r_ctl.current_round;  in rack_log_rtt_sample_calc()
2993 		log.u_bbr.bw_inuse |= rack->r_ctl.rc_considered_lost;  in rack_log_rtt_sample_calc()
2994 		TCP_LOG_EVENTP(rack->rc_tp, NULL,  in rack_log_rtt_sample_calc()
2995 		    &rack->rc_inp->inp_socket->so_rcv,  in rack_log_rtt_sample_calc()
2996 		    &rack->rc_inp->inp_socket->so_snd,  in rack_log_rtt_sample_calc()
3006 	if (rack_verbose_logging && tcp_bblogging_on(rack->rc_tp)) {  in rack_log_rtt_sendmap()
3018 		log.u_bbr.bw_inuse = rack->r_ctl.current_round;  in rack_log_rtt_sendmap()
3020 		log.u_bbr.bw_inuse |= rack->r_ctl.rc_considered_lost;  in rack_log_rtt_sendmap()
3021 		TCP_LOG_EVENTP(rack->rc_tp, NULL,  in rack_log_rtt_sendmap()
3022 		    &rack->rc_inp->inp_socket->so_rcv,  in rack_log_rtt_sendmap()
3023 		    &rack->rc_inp->inp_socket->so_snd,  in rack_log_rtt_sendmap()
3033 	if (rack_verbose_logging && tcp_bblogging_on(rack->rc_tp)) {  in rack_log_progress_event()
3038 		log.u_bbr.inhpts = tcp_in_hpts(rack->rc_tp);  in rack_log_progress_event()
3041 		log.u_bbr.flex3 = tp->t_maxunacktime;  in rack_log_progress_event()
3042 		log.u_bbr.flex4 = tp->t_acktime;  in rack_log_progress_event()
3045 		log.u_bbr.inflight = ctf_flight_size(rack->rc_tp, rack->r_ctl.rc_sacked);  in rack_log_progress_event()
3046 		log.u_bbr.pkts_out = rack->r_ctl.rc_out_at_rto;  in rack_log_progress_event()
3047 		log.u_bbr.delivered = rack->r_ctl.rc_snd_max_at_rto;  in rack_log_progress_event()
3048 		log.u_bbr.pacing_gain = rack->r_must_retran;  in rack_log_progress_event()
3049 		log.u_bbr.bw_inuse = rack->r_ctl.current_round;  in rack_log_progress_event()
3051 		log.u_bbr.bw_inuse |= rack->r_ctl.rc_considered_lost;  in rack_log_progress_event()
3053 		    &rack->rc_inp->inp_socket->so_rcv,  in rack_log_progress_event()
3054 		    &rack->rc_inp->inp_socket->so_snd,  in rack_log_progress_event()
3063 	if (rack_verbose_logging && tcp_bblogging_on(rack->rc_tp)) {  in rack_log_type_bbrsnd()
3067 		log.u_bbr.inhpts = tcp_in_hpts(rack->rc_tp);  in rack_log_type_bbrsnd()
3069 		if (rack->rack_no_prr)  in rack_log_type_bbrsnd()
3072 			log.u_bbr.flex2 = rack->r_ctl.rc_prr_sndcnt;  in rack_log_type_bbrsnd()
3073 		log.u_bbr.flex4 = rack->r_ctl.rc_hpts_flags;  in rack_log_type_bbrsnd()
3075 		log.u_bbr.flex7 = (0x0000ffff & rack->r_ctl.rc_hpts_flags);  in rack_log_type_bbrsnd()
3076 		log.u_bbr.flex8 = rack->rc_in_persist;  in rack_log_type_bbrsnd()
3078 		log.u_bbr.inflight = ctf_flight_size(rack->rc_tp, rack->r_ctl.rc_sacked);  in rack_log_type_bbrsnd()
3079 		log.u_bbr.pkts_out = rack->r_ctl.rc_out_at_rto;  in rack_log_type_bbrsnd()
3080 		log.u_bbr.delivered = rack->r_ctl.rc_snd_max_at_rto;  in rack_log_type_bbrsnd()
3081 		log.u_bbr.pacing_gain = rack->r_must_retran;  in rack_log_type_bbrsnd()
3082 		TCP_LOG_EVENTP(rack->rc_tp, NULL,  in rack_log_type_bbrsnd()
3083 		    &rack->rc_inp->inp_socket->so_rcv,  in rack_log_type_bbrsnd()
3084 		    &rack->rc_inp->inp_socket->so_snd,  in rack_log_type_bbrsnd()
3093 	if (tcp_bblogging_on(rack->rc_tp)) {  in rack_log_doseg_done()
3101 		log.u_bbr.flex4 = rack->r_ctl.rc_hpts_flags;  in rack_log_doseg_done()
3102 		if (rack->rack_no_prr)  in rack_log_doseg_done()
3105 			log.u_bbr.flex5 = rack->r_ctl.rc_prr_sndcnt;  in rack_log_doseg_done()
3107 		log.u_bbr.applimited = rack->r_ctl.rc_pace_min_segs;  in rack_log_doseg_done()
3108 		log.u_bbr.flex7 = rack->rc_ack_can_sendout_data;	/* Do we have ack-can-send set */  in rack_log_doseg_done()
3110 		log.u_bbr.flex7 |= rack->r_fast_output;	/* is fast output primed */  in rack_log_doseg_done()
3112 		log.u_bbr.flex7 |= rack->r_wanted_output;	/* Do we want output */  in rack_log_doseg_done()
3113 		log.u_bbr.flex8 = rack->rc_in_persist;  in rack_log_doseg_done()
3114 		log.u_bbr.inhpts = tcp_in_hpts(rack->rc_tp);  in rack_log_doseg_done()
3116 		log.u_bbr.inflight = ctf_flight_size(rack->rc_tp, rack->r_ctl.rc_sacked);  in rack_log_doseg_done()
3117 		log.u_bbr.use_lt_bw = rack->r_ent_rec_ns;  in rack_log_doseg_done()
3119 		log.u_bbr.use_lt_bw |= rack->r_might_revert;  in rack_log_doseg_done()
3120 		log.u_bbr.pkts_out = rack->r_ctl.rc_out_at_rto;  in rack_log_doseg_done()
3121 		log.u_bbr.delivered = rack->r_ctl.rc_snd_max_at_rto;  in rack_log_doseg_done()
3122 		log.u_bbr.pacing_gain = rack->r_must_retran;  in rack_log_doseg_done()
3123 		log.u_bbr.bw_inuse = rack->r_ctl.current_round;  in rack_log_doseg_done()
3125 		log.u_bbr.bw_inuse |= rack->r_ctl.rc_considered_lost;  in rack_log_doseg_done()
3126 		log.u_bbr.epoch = rack->rc_inp->inp_socket->so_snd.sb_hiwat;  in rack_log_doseg_done()
3127 		log.u_bbr.lt_epoch = rack->rc_inp->inp_socket->so_rcv.sb_hiwat;  in rack_log_doseg_done()
3128 		log.u_bbr.lost = rack->rc_tp->t_srtt;  in rack_log_doseg_done()
3129 		log.u_bbr.pkt_epoch = rack->rc_tp->rfbuf_cnt;  in rack_log_doseg_done()
3130 		TCP_LOG_EVENTP(rack->rc_tp, NULL,  in rack_log_doseg_done()
3131 		    &rack->rc_inp->inp_socket->so_rcv,  in rack_log_doseg_done()
3132 		    &rack->rc_inp->inp_socket->so_snd,  in rack_log_doseg_done()
3141 	if (tcp_bblogging_on(rack->rc_tp)) {  in rack_log_type_pacing_sizes()
3146 		log.u_bbr.flex1 = rack->r_ctl.rc_pace_min_segs;  in rack_log_type_pacing_sizes()
3147 		log.u_bbr.flex3 = rack->r_ctl.rc_pace_max_segs;  in rack_log_type_pacing_sizes()
3150 		log.u_bbr.flex7 = rack->r_ctl.rc_user_set_min_segs;  in rack_log_type_pacing_sizes()
3154 		log.u_bbr.inflight = ctf_flight_size(rack->rc_tp, rack->r_ctl.rc_sacked);  in rack_log_type_pacing_sizes()
3155 		log.u_bbr.pkts_out = rack->r_ctl.rc_out_at_rto;  in rack_log_type_pacing_sizes()
3156 		log.u_bbr.applimited = rack->r_ctl.rc_sacked;  in rack_log_type_pacing_sizes()
3157 		log.u_bbr.delivered = rack->r_ctl.rc_snd_max_at_rto;  in rack_log_type_pacing_sizes()
3158 		log.u_bbr.pacing_gain = rack->r_must_retran;  in rack_log_type_pacing_sizes()
3159 		TCP_LOG_EVENTP(tp, NULL, &tptosocket(tp)->so_rcv,  in rack_log_type_pacing_sizes()
3160 		    &tptosocket(tp)->so_snd,  in rack_log_type_pacing_sizes()
3169 	if (tcp_bblogging_on(rack->rc_tp)) {  in rack_log_type_just_return()
3174 		log.u_bbr.inhpts = tcp_in_hpts(rack->rc_tp);  in rack_log_type_just_return()
3176 		log.u_bbr.flex2 = rack->r_ctl.rc_hpts_flags;  in rack_log_type_just_return()
3178 		if (rack->rack_no_prr)  in rack_log_type_just_return()
3181 			log.u_bbr.flex5 = rack->r_ctl.rc_prr_sndcnt;  in rack_log_type_just_return()
3183 		log.u_bbr.flex8 = rack->rc_in_persist;  in rack_log_type_just_return()
3186 		log.u_bbr.inflight = ctf_flight_size(rack->rc_tp, rack->r_ctl.rc_sacked);  in rack_log_type_just_return()
3187 		log.u_bbr.pkts_out = rack->r_ctl.rc_out_at_rto;  in rack_log_type_just_return()
3188 		log.u_bbr.delivered = rack->r_ctl.rc_snd_max_at_rto;  in rack_log_type_just_return()
3189 		log.u_bbr.pacing_gain = rack->r_must_retran;  in rack_log_type_just_return()
3190 		log.u_bbr.cwnd_gain = rack->rc_has_collapsed;  in rack_log_type_just_return()
3191 		log.u_bbr.bw_inuse = rack->r_ctl.current_round;  in rack_log_type_just_return()
3193 		log.u_bbr.bw_inuse |= rack->r_ctl.rc_considered_lost;  in rack_log_type_just_return()
3194 		TCP_LOG_EVENTP(rack->rc_tp, NULL,  in rack_log_type_just_return()
3195 		    &rack->rc_inp->inp_socket->so_rcv,  in rack_log_type_just_return()
3196 		    &rack->rc_inp->inp_socket->so_snd,  in rack_log_type_just_return()
3206 	if (tcp_bblogging_on(rack->rc_tp)) {  in rack_log_to_cancel()
3210 		log.u_bbr.inhpts = tcp_in_hpts(rack->rc_tp);  in rack_log_to_cancel()
3212 		log.u_bbr.flex2 = rack->r_ctl.rc_last_output_to;  in rack_log_to_cancel()
3215 		if (rack->rack_no_prr)  in rack_log_to_cancel()
3218 			log.u_bbr.flex5 = rack->r_ctl.rc_prr_sndcnt;  in rack_log_to_cancel()
3219 		log.u_bbr.flex6 = rack->rc_tp->t_rxtcur;  in rack_log_to_cancel()
3222 		log.u_bbr.applimited = rack->r_ctl.rc_hpts_flags;  in rack_log_to_cancel()
3224 		log.u_bbr.inflight = ctf_flight_size(rack->rc_tp, rack->r_ctl.rc_sacked);  in rack_log_to_cancel()
3225 		log.u_bbr.pkts_out = rack->r_ctl.rc_out_at_rto;  in rack_log_to_cancel()
3226 		log.u_bbr.delivered = rack->r_ctl.rc_snd_max_at_rto;  in rack_log_to_cancel()
3227 		log.u_bbr.pacing_gain = rack->r_must_retran;  in rack_log_to_cancel()
3228 		log.u_bbr.bw_inuse = rack->r_ctl.current_round;  in rack_log_to_cancel()
3230 		log.u_bbr.bw_inuse |= rack->r_ctl.rc_considered_lost;  in rack_log_to_cancel()
3231 		TCP_LOG_EVENTP(rack->rc_tp, NULL,  in rack_log_to_cancel()
3232 		    &rack->rc_inp->inp_socket->so_rcv,  in rack_log_to_cancel()
3233 		    &rack->rc_inp->inp_socket->so_snd,  in rack_log_to_cancel()
3246 	if (tcp_bblogging_on(rack->rc_tp)) {  in rack_log_alt_to_to_cancel()
3264 		TCP_LOG_EVENTP(rack->rc_tp, NULL,  in rack_log_alt_to_to_cancel()
3265 		    &rack->rc_inp->inp_socket->so_rcv,  in rack_log_alt_to_to_cancel()
3266 		    &rack->rc_inp->inp_socket->so_snd,  in rack_log_alt_to_to_cancel()
3275 	if (rack_verbose_logging && tcp_bblogging_on(rack->rc_tp)) {  in rack_log_to_processing()
3282 		log.u_bbr.flex3 = rack->r_ctl.rc_timer_exp;  in rack_log_to_processing()
3283 		log.u_bbr.flex4 = rack->r_ctl.rc_hpts_flags;  in rack_log_to_processing()
3285 		if (rack->rack_no_prr)  in rack_log_to_processing()
3288 			log.u_bbr.flex6 = rack->r_ctl.rc_prr_sndcnt;  in rack_log_to_processing()
3289 		log.u_bbr.pkts_out = rack->r_ctl.rc_out_at_rto;  in rack_log_to_processing()
3290 		log.u_bbr.delivered = rack->r_ctl.rc_snd_max_at_rto;  in rack_log_to_processing()
3291 		log.u_bbr.pacing_gain = rack->r_must_retran;  in rack_log_to_processing()
3293 		log.u_bbr.inflight = ctf_flight_size(rack->rc_tp, rack->r_ctl.rc_sacked);  in rack_log_to_processing()
3294 		TCP_LOG_EVENTP(rack->rc_tp, NULL,  in rack_log_to_processing()
3295 		    &rack->rc_inp->inp_socket->so_rcv,  in rack_log_to_processing()
3296 		    &rack->rc_inp->inp_socket->so_snd,  in rack_log_to_processing()
3305 	if (tcp_bblogging_on(rack->rc_tp)) {  in rack_log_to_prr()
3310 		log.u_bbr.flex1 = rack->r_ctl.rc_prr_out;  in rack_log_to_prr()
3311 		log.u_bbr.flex2 = rack->r_ctl.rc_prr_recovery_fs;  in rack_log_to_prr()
3312 		if (rack->rack_no_prr)  in rack_log_to_prr()
3315 			log.u_bbr.flex3 = rack->r_ctl.rc_prr_sndcnt;  in rack_log_to_prr()
3316 		log.u_bbr.flex4 = rack->r_ctl.rc_prr_delivered;  in rack_log_to_prr()
3317 		log.u_bbr.flex5 = rack->r_ctl.rc_sacked;  in rack_log_to_prr()
3318 		log.u_bbr.flex6 = rack->r_ctl.rc_holes_rxt;  in rack_log_to_prr()
3323 		log.u_bbr.inflight = ctf_flight_size(rack->rc_tp, rack->r_ctl.rc_sacked);  in rack_log_to_prr()
3324 		log.u_bbr.use_lt_bw = rack->r_ent_rec_ns;  in rack_log_to_prr()
3326 		log.u_bbr.use_lt_bw |= rack->r_might_revert;  in rack_log_to_prr()
3327 		TCP_LOG_EVENTP(rack->rc_tp, NULL,  in rack_log_to_prr()
3328 		    &rack->rc_inp->inp_socket->so_rcv,  in rack_log_to_prr()
3329 		    &rack->rc_inp->inp_socket->so_snd,  in rack_log_to_prr()
3407 	if (rack->rc_free_cnt > rack_free_cache) {  in rack_alloc()
3408 		rsm = TAILQ_FIRST(&rack->r_ctl.rc_free);  in rack_alloc()
3409 		TAILQ_REMOVE(&rack->r_ctl.rc_free, rsm, r_tnext);  in rack_alloc()
3411 		rack->rc_free_cnt--;  in rack_alloc()
3421 		rack->r_ctl.rc_num_maps_alloced++;  in rack_alloc()
3429 	if (rack->rc_free_cnt) {  in rack_alloc()
3431 		rsm = TAILQ_FIRST(&rack->r_ctl.rc_free);  in rack_alloc()
3432 		TAILQ_REMOVE(&rack->r_ctl.rc_free, rsm, r_tnext);  in rack_alloc()
3433 		rack->rc_free_cnt--;  in rack_alloc()
3443 	    (rack->r_ctl.rc_num_maps_alloced >= V_tcp_map_entries_limit)) {  in rack_alloc_full_limit()
3445 		if (!rack->alloc_limit_reported) {  in rack_alloc_full_limit()
3446 			rack->alloc_limit_reported = 1;  in rack_alloc_full_limit()
3462 		if (rack->r_ctl.rc_split_limit > 0 &&  in rack_alloc_limit()
3463 		    rack->r_ctl.rc_num_split_allocs >= rack->r_ctl.rc_split_limit) {  in rack_alloc_limit()
3465 			if (!rack->alloc_limit_reported) {  in rack_alloc_limit()
3466 				rack->alloc_limit_reported = 1;  in rack_alloc_limit()
3476 		rsm->r_limit_type = limit_type;  in rack_alloc_limit()
3477 		rack->r_ctl.rc_num_split_allocs++;  in rack_alloc_limit()
3491 	while (rack->rc_free_cnt > rack_free_cache) {  in rack_free_trim()
3492 		rsm = TAILQ_LAST(&rack->r_ctl.rc_free, rack_head);  in rack_free_trim()
3493 		TAILQ_REMOVE(&rack->r_ctl.rc_free, rsm, r_tnext);  in rack_free_trim()
3494 		rack->rc_free_cnt--;  in rack_free_trim()
3495 		rack->r_ctl.rc_num_maps_alloced--;  in rack_free_trim()
3503 	if (rsm->r_flags & RACK_APP_LIMITED) {  in rack_free()
3504 		if (rack->r_ctl.rc_app_limited_cnt > 0) {  in rack_free()
3505 			rack->r_ctl.rc_app_limited_cnt--;  in rack_free()
3508 	if (rsm->r_limit_type) {  in rack_free()
3510 		rack->r_ctl.rc_num_split_allocs--;  in rack_free()
3512 	if (rsm == rack->r_ctl.rc_first_appl) {  in rack_free()
3513 		rack->r_ctl.cleared_app_ack_seq = rsm->r_start + (rsm->r_end - rsm->r_start);  in rack_free()
3514 		rack->r_ctl.cleared_app_ack = 1;  in rack_free()
3515 		if (rack->r_ctl.rc_app_limited_cnt == 0)  in rack_free()
3516 			rack->r_ctl.rc_first_appl = NULL;  in rack_free()
3518 			rack->r_ctl.rc_first_appl = tqhash_find(rack->r_ctl.tqh, rsm->r_nseq_appl);  in rack_free()
3520 	if (rsm == rack->r_ctl.rc_resend)  in rack_free()
3521 		rack->r_ctl.rc_resend = NULL;  in rack_free()
3522 	if (rsm == rack->r_ctl.rc_end_appl)  in rack_free()
3523 		rack->r_ctl.rc_end_appl = NULL;  in rack_free()
3524 	if (rack->r_ctl.rc_tlpsend == rsm)  in rack_free()
3525 		rack->r_ctl.rc_tlpsend = NULL;  in rack_free()
3526 	if (rack->r_ctl.rc_sacklast == rsm)  in rack_free()
3527 		rack->r_ctl.rc_sacklast = NULL;  in rack_free()
3530 	if ((rack->rc_free_cnt + 1) > RACK_FREE_CNT_MAX) {  in rack_free()
3533 	TAILQ_INSERT_HEAD(&rack->r_ctl.rc_free, rsm, r_tnext);  in rack_free()
3534 	rack->rc_free_cnt++;  in rack_free()
3543 	segsiz = min(ctf_fixed_maxseg(tp), rack->r_ctl.rc_pace_min_segs);  in rack_get_measure_window()
3545 	if (rack->rc_gp_filled == 0) {  in rack_get_measure_window()
3567 	 * have gone by which is done further below in  in rack_get_measure_window()
3582 	srtt = (uint64_t)tp->t_srtt;  in rack_get_measure_window()
3624 	if (SEQ_LT(th_ack, tp->gput_seq)) {  in rack_enough_for_measurement()
3628 	if ((tp->snd_max == tp->snd_una) ||  in rack_enough_for_measurement()
3629 	    (th_ack == tp->snd_max)){  in rack_enough_for_measurement()
3643 	if (SEQ_GEQ(th_ack,  tp->gput_ack)) {  in rack_enough_for_measurement()
3653 	segsiz = min(ctf_fixed_maxseg(tp), rack->r_ctl.rc_pace_min_segs);  in rack_enough_for_measurement()
3654 	if (SEQ_LT(th_ack, tp->gput_ack) &&  in rack_enough_for_measurement()
3655 	    ((th_ack - tp->gput_seq) < max(rc_init_window(rack), (MIN_GP_WIN * segsiz)))) {  in rack_enough_for_measurement()
3659 	if (rack->r_ctl.rc_first_appl &&  in rack_enough_for_measurement()
3660 	    (SEQ_GEQ(th_ack, rack->r_ctl.rc_first_appl->r_end))) {  in rack_enough_for_measurement()
3669 	srtts = (rack->r_ctl.rc_gp_srtt * rack_min_srtts);  in rack_enough_for_measurement()
3670 	tim = tcp_tv_to_usectick(&rack->r_ctl.act_rcv_time) - tp->gput_ts;  in rack_enough_for_measurement()
3671 	if ((tim >= srtts) && (IN_RECOVERY(rack->rc_tp->t_flags) == 0)) {  in rack_enough_for_measurement()
3690 	if (tcp_bblogging_on(rack->rc_tp)) {  in rack_log_timely()
3696 		log.u_bbr.flex2 = rack->rc_gp_timely_inc_cnt;  in rack_log_timely()
3698 		log.u_bbr.flex2 |= rack->rc_gp_timely_dec_cnt;  in rack_log_timely()
3700 		log.u_bbr.flex2 |= rack->rc_gp_incr;  in rack_log_timely()
3702 		log.u_bbr.flex2 |= rack->rc_gp_bwred;  in rack_log_timely()
3703 		log.u_bbr.flex3 = rack->rc_gp_incr;  in rack_log_timely()
3704 		log.u_bbr.flex4 = rack->r_ctl.rack_per_of_gp_ss;  in rack_log_timely()
3705 		log.u_bbr.flex5 = rack->r_ctl.rack_per_of_gp_ca;  in rack_log_timely()
3706 		log.u_bbr.flex6 = rack->r_ctl.rack_per_of_gp_rec;  in rack_log_timely()
3707 		log.u_bbr.flex7 = rack->rc_gp_bwred;  in rack_log_timely()
3714 		log.u_bbr.pkts_out = rack->r_ctl.rc_rtt_diff;  in rack_log_timely()
3716 		log.u_bbr.inflight = ctf_flight_size(rack->rc_tp, rack->r_ctl.rc_sacked);  in rack_log_timely()
3717 		log.u_bbr.epoch = rack->r_ctl.rc_gp_srtt;  in rack_log_timely()
3718 		log.u_bbr.lt_epoch = rack->r_ctl.rc_prev_gp_srtt;  in rack_log_timely()
3719 		log.u_bbr.cwnd_gain = rack->rc_dragged_bottom;  in rack_log_timely()
3721 		log.u_bbr.cwnd_gain |= rack->rc_gp_saw_rec;  in rack_log_timely()
3723 		log.u_bbr.cwnd_gain |= rack->rc_gp_saw_ss;  in rack_log_timely()
3725 		log.u_bbr.cwnd_gain |= rack->rc_gp_saw_ca;  in rack_log_timely()
3726 		log.u_bbr.lost = rack->r_ctl.rc_loss_count;  in rack_log_timely()
3727 		TCP_LOG_EVENTP(rack->rc_tp, NULL,  in rack_log_timely()
3728 		    &rack->rc_inp->inp_socket->so_rcv,  in rack_log_timely()
3729 		    &rack->rc_inp->inp_socket->so_snd,  in rack_log_timely()
3816 	if (rack->r_ctl.rack_per_of_gp_rec  < 100) {  in rack_validate_multipliers_at_or_above100()
3818 		rack->r_ctl.rack_per_of_gp_rec = 100;  in rack_validate_multipliers_at_or_above100()
3820 	if (rack->r_ctl.rack_per_of_gp_ca < 100) {  in rack_validate_multipliers_at_or_above100()
3821 		rack->r_ctl.rack_per_of_gp_ca = 100;  in rack_validate_multipliers_at_or_above100()
3823 	if (rack->r_ctl.rack_per_of_gp_ss < 100) {  in rack_validate_multipliers_at_or_above100()
3824 		rack->r_ctl.rack_per_of_gp_ss = 100;  in rack_validate_multipliers_at_or_above100()
3831 	if (rack->r_ctl.rack_per_of_gp_ca > 100) {  in rack_validate_multipliers_at_or_below_100()
3832 		rack->r_ctl.rack_per_of_gp_ca = 100;  in rack_validate_multipliers_at_or_below_100()
3834 	if (rack->r_ctl.rack_per_of_gp_ss > 100) {  in rack_validate_multipliers_at_or_below_100()
3835 		rack->r_ctl.rack_per_of_gp_ss = 100;  in rack_validate_multipliers_at_or_below_100()
3846 	if (rack->rc_skip_timely)  in rack_increase_bw_mul()
3853 		 * to a new-reno flow.  in rack_increase_bw_mul()
3858 	if (rack->rc_gp_incr &&  in rack_increase_bw_mul()
3859 	    ((rack->rc_gp_timely_inc_cnt + 1) >= RACK_TIMELY_CNT_BOOST)) {  in rack_increase_bw_mul()
3866 		rack->rc_gp_timely_inc_cnt = 0;  in rack_increase_bw_mul()
3871 	    ((rack->r_ctl.rc_rtt_diff <= 0) || (timely_says <= 0)))  in rack_increase_bw_mul()
3873 	if (rack->rc_gp_saw_rec &&  in rack_increase_bw_mul()
3874 	    (rack->rc_gp_no_rec_chg == 0) &&  in rack_increase_bw_mul()
3876 				  rack->r_ctl.rack_per_of_gp_rec)) {  in rack_increase_bw_mul()
3878 		calc = rack->r_ctl.rack_per_of_gp_rec + plus;  in rack_increase_bw_mul()
3882 		rack->r_ctl.rack_per_of_gp_rec = (uint16_t)calc;  in rack_increase_bw_mul()
3883 		if (rack->r_ctl.rack_per_upper_bound_ca &&  in rack_increase_bw_mul()
3884 		    (rack->rc_dragged_bottom == 0) &&  in rack_increase_bw_mul()
3885 		    (rack->r_ctl.rack_per_of_gp_rec > rack->r_ctl.rack_per_upper_bound_ca))  in rack_increase_bw_mul()
3886 			rack->r_ctl.rack_per_of_gp_rec = rack->r_ctl.rack_per_upper_bound_ca;  in rack_increase_bw_mul()
3888 	if (rack->rc_gp_saw_ca &&  in rack_increase_bw_mul()
3889 	    (rack->rc_gp_saw_ss == 0) &&  in rack_increase_bw_mul()
3891 				  rack->r_ctl.rack_per_of_gp_ca)) {  in rack_increase_bw_mul()
3893 		calc = rack->r_ctl.rack_per_of_gp_ca + plus;  in rack_increase_bw_mul()
3897 		rack->r_ctl.rack_per_of_gp_ca = (uint16_t)calc;  in rack_increase_bw_mul()
3898 		if (rack->r_ctl.rack_per_upper_bound_ca &&  in rack_increase_bw_mul()
3899 		    (rack->rc_dragged_bottom == 0) &&  in rack_increase_bw_mul()
3900 		    (rack->r_ctl.rack_per_of_gp_ca > rack->r_ctl.rack_per_upper_bound_ca))  in rack_increase_bw_mul()
3901 			rack->r_ctl.rack_per_of_gp_ca = rack->r_ctl.rack_per_upper_bound_ca;  in rack_increase_bw_mul()
3903 	if (rack->rc_gp_saw_ss &&  in rack_increase_bw_mul()
3905 				  rack->r_ctl.rack_per_of_gp_ss)) {  in rack_increase_bw_mul()
3907 		calc = rack->r_ctl.rack_per_of_gp_ss + plus;  in rack_increase_bw_mul()
3910 		rack->r_ctl.rack_per_of_gp_ss = (uint16_t)calc;  in rack_increase_bw_mul()
3911 		if (rack->r_ctl.rack_per_upper_bound_ss &&  in rack_increase_bw_mul()
3912 		    (rack->rc_dragged_bottom == 0) &&  in rack_increase_bw_mul()
3913 		    (rack->r_ctl.rack_per_of_gp_ss > rack->r_ctl.rack_per_upper_bound_ss))  in rack_increase_bw_mul()
3914 			rack->r_ctl.rack_per_of_gp_ss = rack->r_ctl.rack_per_upper_bound_ss;  in rack_increase_bw_mul()
3918 	    (rack->rc_gp_incr == 0)){  in rack_increase_bw_mul()
3920 		rack->rc_gp_incr = 1;  in rack_increase_bw_mul()
3921 		rack->rc_gp_timely_inc_cnt = 0;  in rack_increase_bw_mul()
3923 	if (rack->rc_gp_incr &&  in rack_increase_bw_mul()
3925 	    (rack->rc_gp_timely_inc_cnt < RACK_TIMELY_CNT_BOOST)) {  in rack_increase_bw_mul()
3926 		rack->rc_gp_timely_inc_cnt++;  in rack_increase_bw_mul()
3935 	/*-  in rack_get_decrease()
3937 	 * new_per = curper * (1 - B * norm_grad)  in rack_get_decrease()
3940 	 * rtt_dif = input var current rtt-diff  in rack_get_decrease()
3953 	 *             (uint64_t)get_filter_small(&rack->r_ctl.rc_gp_min_rtt));  in rack_get_decrease()
3956 	 * reduce_by = (1000000 - inverse);  in rack_get_decrease()
3962 	perf = (((uint64_t)curper * ((uint64_t)1000000 -  in rack_get_decrease()
3965 		      (uint64_t)get_filter_value_small(&rack->r_ctl.rc_gp_min_rtt)))/  in rack_get_decrease()
3970 		perf = curper - 1;  in rack_get_decrease()
3980 	 * result = curper * (1 - (B * ( 1 -  ------          ))  in rack_decrease_highrtt()
3989 	highrttthresh = get_filter_value_small(&rack->r_ctl.rc_gp_min_rtt) * rack_gp_rtt_maxmul;  in rack_decrease_highrtt()
3991 	perf = (((uint64_t)curper * ((uint64_t)1000000 -  in rack_decrease_highrtt()
3992 				     ((uint64_t)rack_gp_decrease_per * ((uint64_t)1000000 -  in rack_decrease_highrtt()
3995 	if (tcp_bblogging_on(rack->rc_tp)) {  in rack_decrease_highrtt()
4018 	if (rack->rc_skip_timely)  in rack_decrease_bw_mul()
4020 	if (rack->rc_gp_incr) {  in rack_decrease_bw_mul()
4022 		rack->rc_gp_incr = 0;  in rack_decrease_bw_mul()
4023 		rack->rc_gp_timely_inc_cnt = 0;  in rack_decrease_bw_mul()
4029 		rtt_diff *= -1;  in rack_decrease_bw_mul()
4032 	if (rack->rc_gp_saw_rec && (rack->rc_gp_no_rec_chg == 0)) {  in rack_decrease_bw_mul()
4035 			new_per = rack_decrease_highrtt(rack, rack->r_ctl.rack_per_of_gp_rec, rtt);  in rack_decrease_bw_mul()
4036 			alt = rack_get_decrease(rack, rack->r_ctl.rack_per_of_gp_rec, rtt_diff);  in rack_decrease_bw_mul()
4042 			 val = new_per = alt = rack_get_decrease(rack, rack->r_ctl.rack_per_of_gp_rec, rtt_diff);  in rack_decrease_bw_mul()
4043 		if (rack->r_ctl.rack_per_of_gp_rec > val) {  in rack_decrease_bw_mul()
4044 			rec_red = (rack->r_ctl.rack_per_of_gp_rec - val);  in rack_decrease_bw_mul()
4045 			rack->r_ctl.rack_per_of_gp_rec = (uint16_t)val;  in rack_decrease_bw_mul()
4047 			rack->r_ctl.rack_per_of_gp_rec = rack_per_lower_bound;  in rack_decrease_bw_mul()
4050 		if (rack_per_lower_bound > rack->r_ctl.rack_per_of_gp_rec)  in rack_decrease_bw_mul()
4051 			rack->r_ctl.rack_per_of_gp_rec = rack_per_lower_bound;  in rack_decrease_bw_mul()
4054 	if (rack->rc_gp_saw_ss) {  in rack_decrease_bw_mul()
4057 			new_per = rack_decrease_highrtt(rack, rack->r_ctl.rack_per_of_gp_ss, rtt);  in rack_decrease_bw_mul()
4058 			alt = rack_get_decrease(rack, rack->r_ctl.rack_per_of_gp_ss, rtt_diff);  in rack_decrease_bw_mul()
4064 			val = new_per = alt = rack_get_decrease(rack, rack->r_ctl.rack_per_of_gp_ss, rtt_diff);  in rack_decrease_bw_mul()
4065 		if (rack->r_ctl.rack_per_of_gp_ss > new_per) {  in rack_decrease_bw_mul()
4066 			ss_red = rack->r_ctl.rack_per_of_gp_ss - val;  in rack_decrease_bw_mul()
4067 			rack->r_ctl.rack_per_of_gp_ss = (uint16_t)val;  in rack_decrease_bw_mul()
4070 			rack->r_ctl.rack_per_of_gp_ss = rack_per_lower_bound;  in rack_decrease_bw_mul()
4079 			logvar3 |= get_filter_value_small(&rack->r_ctl.rc_gp_min_rtt);  in rack_decrease_bw_mul()
4084 		if (rack_per_lower_bound > rack->r_ctl.rack_per_of_gp_ss)  in rack_decrease_bw_mul()
4085 			rack->r_ctl.rack_per_of_gp_ss = rack_per_lower_bound;  in rack_decrease_bw_mul()
4087 	} else if (rack->rc_gp_saw_ca) {  in rack_decrease_bw_mul()
4090 			new_per = rack_decrease_highrtt(rack, rack->r_ctl.rack_per_of_gp_ca, rtt);  in rack_decrease_bw_mul()
4091 			alt = rack_get_decrease(rack, rack->r_ctl.rack_per_of_gp_ca, rtt_diff);  in rack_decrease_bw_mul()
4097 			val = new_per = alt = rack_get_decrease(rack, rack->r_ctl.rack_per_of_gp_ca, rtt_diff);  in rack_decrease_bw_mul()
4098 		if (rack->r_ctl.rack_per_of_gp_ca > val) {  in rack_decrease_bw_mul()
4099 			ca_red = rack->r_ctl.rack_per_of_gp_ca - val;  in rack_decrease_bw_mul()
4100 			rack->r_ctl.rack_per_of_gp_ca = (uint16_t)val;  in rack_decrease_bw_mul()
4102 			rack->r_ctl.rack_per_of_gp_ca = rack_per_lower_bound;  in rack_decrease_bw_mul()
4112 			logvar3 |= get_filter_value_small(&rack->r_ctl.rc_gp_min_rtt);  in rack_decrease_bw_mul()
4117 		if (rack_per_lower_bound > rack->r_ctl.rack_per_of_gp_ca)  in rack_decrease_bw_mul()
4118 			rack->r_ctl.rack_per_of_gp_ca = rack_per_lower_bound;  in rack_decrease_bw_mul()
4121 	if (rack->rc_gp_timely_dec_cnt < 0x7) {  in rack_decrease_bw_mul()
4122 		rack->rc_gp_timely_dec_cnt++;  in rack_decrease_bw_mul()
4124 		    (rack->rc_gp_timely_dec_cnt == rack_timely_dec_clear))  in rack_decrease_bw_mul()
4125 			rack->rc_gp_timely_dec_cnt = 0;  in rack_decrease_bw_mul()
4138 	if (tcp_bblogging_on(rack->rc_tp)) {  in rack_log_rtt_shrinks()
4144 		log.u_bbr.flex2 = rack->r_ctl.rc_time_probertt_starts;  in rack_log_rtt_shrinks()
4145 		log.u_bbr.flex3 = rack->r_ctl.rc_lower_rtt_us_cts;  in rack_log_rtt_shrinks()
4146 		log.u_bbr.flex4 = rack->r_ctl.rack_per_of_gp_ss;  in rack_log_rtt_shrinks()
4148 		log.u_bbr.flex6 = rack->rc_highly_buffered;  in rack_log_rtt_shrinks()
4150 		log.u_bbr.flex6 |= rack->forced_ack;  in rack_log_rtt_shrinks()
4152 		log.u_bbr.flex6 |= rack->rc_gp_dyn_mul;  in rack_log_rtt_shrinks()
4154 		log.u_bbr.flex6 |= rack->in_probe_rtt;  in rack_log_rtt_shrinks()
4156 		log.u_bbr.flex6 |= rack->measure_saw_probe_rtt;  in rack_log_rtt_shrinks()
4157 		log.u_bbr.flex7 = rack->r_ctl.rack_per_of_gp_probertt;  in rack_log_rtt_shrinks()
4158 		log.u_bbr.pacing_gain = rack->r_ctl.rack_per_of_gp_ca;  in rack_log_rtt_shrinks()
4159 		log.u_bbr.cwnd_gain = rack->r_ctl.rack_per_of_gp_rec;  in rack_log_rtt_shrinks()
4163 		log.u_bbr.cur_del_rate = rack->r_ctl.rc_highest_us_rtt;  in rack_log_rtt_shrinks()
4165 		log.u_bbr.cur_del_rate |= rack->r_ctl.rc_lowest_us_rtt;  in rack_log_rtt_shrinks()
4166 		log.u_bbr.applimited = rack->r_ctl.rc_time_probertt_entered;  in rack_log_rtt_shrinks()
4167 		log.u_bbr.pkts_out = rack->r_ctl.rc_rtt_diff;  in rack_log_rtt_shrinks()
4168 		log.u_bbr.inflight = ctf_flight_size(rack->rc_tp, rack->r_ctl.rc_sacked);  in rack_log_rtt_shrinks()
4169 		log.u_bbr.epoch = rack->r_ctl.rc_gp_srtt;  in rack_log_rtt_shrinks()
4170 		log.u_bbr.lt_epoch = rack->r_ctl.rc_prev_gp_srtt;  in rack_log_rtt_shrinks()
4171 		log.u_bbr.pkt_epoch = rack->r_ctl.rc_lower_rtt_us_cts;  in rack_log_rtt_shrinks()
4172 		log.u_bbr.delivered = rack->r_ctl.rc_target_probertt_flight;  in rack_log_rtt_shrinks()
4173 		log.u_bbr.lost = get_filter_value_small(&rack->r_ctl.rc_gp_min_rtt);  in rack_log_rtt_shrinks()
4176 		log.u_bbr.rttProp |= rack->r_ctl.rc_entry_gp_rtt;  in rack_log_rtt_shrinks()
4177 		TCP_LOG_EVENTP(rack->rc_tp, NULL,  in rack_log_rtt_shrinks()
4178 		    &rack->rc_inp->inp_socket->so_rcv,  in rack_log_rtt_shrinks()
4179 		    &rack->rc_inp->inp_socket->so_snd,  in rack_log_rtt_shrinks()
4181 		    0, &log, false, &rack->r_ctl.act_rcv_time);  in rack_log_rtt_shrinks()
4193 	rack->r_ctl.rc_target_probertt_flight = roundup((uint32_t)bwdp, segsiz);  in rack_set_prtt_target()
4194 	if (rack->r_ctl.rc_target_probertt_flight < (segsiz * rack_timely_min_segs)) {  in rack_set_prtt_target()
4200 		rack->r_ctl.rc_target_probertt_flight = (segsiz * rack_timely_min_segs);  in rack_set_prtt_target()
4221 	rack->r_ctl.rc_lower_rtt_us_cts = us_cts;  in rack_enter_probertt()
4222 	if (rack->rc_gp_dyn_mul == 0)  in rack_enter_probertt()
4225 	if (rack->rc_tp->snd_max == rack->rc_tp->snd_una) {  in rack_enter_probertt()
4229 	if ((rack->rc_tp->t_flags & TF_GPUTINPROG) &&  in rack_enter_probertt()
4230 	    SEQ_GT(rack->rc_tp->snd_una, rack->rc_tp->gput_seq)) {  in rack_enter_probertt()
4238 		rack_do_goodput_measurement(rack->rc_tp, rack,  in rack_enter_probertt()
4239 					    rack->rc_tp->snd_una, __LINE__,  in rack_enter_probertt()
4242 	rack->r_ctl.rack_per_of_gp_probertt = rack_per_of_gp_probertt;  in rack_enter_probertt()
4243 	rack->r_ctl.rc_time_probertt_entered = us_cts;  in rack_enter_probertt()
4244 	segsiz = min(ctf_fixed_maxseg(rack->rc_tp),  in rack_enter_probertt()
4245 		     rack->r_ctl.rc_pace_min_segs);  in rack_enter_probertt()
4246 	rack->in_probe_rtt = 1;  in rack_enter_probertt()
4247 	rack->measure_saw_probe_rtt = 1;  in rack_enter_probertt()
4248 	rack->r_ctl.rc_time_probertt_starts = 0;  in rack_enter_probertt()
4249 	rack->r_ctl.rc_entry_gp_rtt = rack->r_ctl.rc_gp_srtt;  in rack_enter_probertt()
4251 		rack_set_prtt_target(rack, segsiz, get_filter_value_small(&rack->r_ctl.rc_gp_min_rtt));  in rack_enter_probertt()
4253 		rack_set_prtt_target(rack, segsiz, rack->r_ctl.rc_gp_srtt);  in rack_enter_probertt()
4254 	rack_log_rtt_shrinks(rack,  us_cts,  get_filter_value_small(&rack->r_ctl.rc_gp_min_rtt),  in rack_enter_probertt()
4264 	segsiz = min(ctf_fixed_maxseg(rack->rc_tp),  in rack_exit_probertt()
4265 		     rack->r_ctl.rc_pace_min_segs);  in rack_exit_probertt()
4266 	rack->in_probe_rtt = 0;  in rack_exit_probertt()
4267 	if ((rack->rc_tp->t_flags & TF_GPUTINPROG) &&  in rack_exit_probertt()
4268 	    SEQ_GT(rack->rc_tp->snd_una, rack->rc_tp->gput_seq)) {  in rack_exit_probertt()
4276 		rack_do_goodput_measurement(rack->rc_tp, rack,  in rack_exit_probertt()
4277 					    rack->rc_tp->snd_una, __LINE__,  in rack_exit_probertt()
4279 	} else if (rack->rc_tp->t_flags & TF_GPUTINPROG) {  in rack_exit_probertt()
4283 		 * probe-rtt. We probably are not interested in  in rack_exit_probertt()
4286 		rack->rc_tp->t_flags &= ~TF_GPUTINPROG;  in rack_exit_probertt()
4292 	 * We need to mark these as app-limited so we  in rack_exit_probertt()
4295 	rsm = tqhash_max(rack->r_ctl.tqh);  in rack_exit_probertt()
4296 	if (rsm && ((rsm->r_flags & RACK_APP_LIMITED) == 0)) {  in rack_exit_probertt()
4297 		if (rack->r_ctl.rc_app_limited_cnt == 0)  in rack_exit_probertt()
4298 			rack->r_ctl.rc_end_appl = rack->r_ctl.rc_first_appl = rsm;  in rack_exit_probertt()
4305 			if (rack->r_ctl.rc_end_appl)  in rack_exit_probertt()
4306 				rack->r_ctl.rc_end_appl->r_nseq_appl = rsm->r_start;  in rack_exit_probertt()
4307 			rack->r_ctl.rc_end_appl = rsm;  in rack_exit_probertt()
4309 		rsm->r_flags |= RACK_APP_LIMITED;  in rack_exit_probertt()
4310 		rack->r_ctl.rc_app_limited_cnt++;  in rack_exit_probertt()
4322 		rack->rc_gp_incr = 0;  in rack_exit_probertt()
4323 		rack->rc_gp_bwred = 0;  in rack_exit_probertt()
4324 		rack->rc_gp_timely_inc_cnt = 0;  in rack_exit_probertt()
4325 		rack->rc_gp_timely_dec_cnt = 0;  in rack_exit_probertt()
4328 	if (rack->rc_highly_buffered && rack_atexit_prtt_hbp) {  in rack_exit_probertt()
4329 		rack->r_ctl.rack_per_of_gp_ca = rack_atexit_prtt_hbp;  in rack_exit_probertt()
4330 		rack->r_ctl.rack_per_of_gp_ss = rack_atexit_prtt_hbp;  in rack_exit_probertt()
4332 	if ((rack->rc_highly_buffered == 0) && rack_atexit_prtt) {  in rack_exit_probertt()
4333 		rack->r_ctl.rack_per_of_gp_ca = rack_atexit_prtt;  in rack_exit_probertt()
4334 		rack->r_ctl.rack_per_of_gp_ss = rack_atexit_prtt;  in rack_exit_probertt()
4340 	rack->r_ctl.rc_rtt_diff = 0;  in rack_exit_probertt()
4343 	rack->rc_tp->t_bytes_acked = 0;  in rack_exit_probertt()
4344 	rack->rc_tp->t_ccv.flags &= ~CCF_ABC_SENTAWND;  in rack_exit_probertt()
4357 					     get_filter_value_small(&rack->r_ctl.rc_gp_min_rtt));  in rack_exit_probertt()
4361 					     rack->r_ctl.rc_gp_srtt);  in rack_exit_probertt()
4365 					     rack->r_ctl.rc_entry_gp_rtt);  in rack_exit_probertt()
4370 			sum = rack->r_ctl.rc_entry_gp_rtt;  in rack_exit_probertt()
4372 			sum /= (uint64_t)(max(1, rack->r_ctl.rc_gp_srtt));  in rack_exit_probertt()
4380 				setval = rack->r_ctl.rc_entry_gp_rtt;  in rack_exit_probertt()
4387 				setval = rack->r_ctl.rc_gp_srtt;  in rack_exit_probertt()
4388 				if (setval > rack->r_ctl.rc_entry_gp_rtt)  in rack_exit_probertt()
4389 					setval = rack->r_ctl.rc_entry_gp_rtt;  in rack_exit_probertt()
4396 				setval = get_filter_value_small(&rack->r_ctl.rc_gp_min_rtt);  in rack_exit_probertt()
4403 			ebdp = rack->r_ctl.rc_target_probertt_flight;  in rack_exit_probertt()
4406 			setto = rack->r_ctl.rc_target_probertt_flight + ebdp;  in rack_exit_probertt()
4408 			setto = rack->r_ctl.rc_target_probertt_flight;  in rack_exit_probertt()
4409 		rack->rc_tp->snd_cwnd = roundup(setto, segsiz);  in rack_exit_probertt()
4410 		if (rack->rc_tp->snd_cwnd < (segsiz * rack_timely_min_segs)) {  in rack_exit_probertt()
4412 			rack->rc_tp->snd_cwnd = segsiz * rack_timely_min_segs;  in rack_exit_probertt()
4415 		rack->rc_tp->snd_ssthresh = (rack->rc_tp->snd_cwnd - 1);  in rack_exit_probertt()
4418 			     get_filter_value_small(&rack->r_ctl.rc_gp_min_rtt),  in rack_exit_probertt()
4421 	rack->r_ctl.rc_probertt_sndmax_atexit = rack->rc_tp->snd_max;  in rack_exit_probertt()
4422 	rack->r_ctl.rc_time_probertt_entered = us_cts;  in rack_exit_probertt()
4423 	rack->r_ctl.rc_time_probertt_starts = rack->r_ctl.rc_lower_rtt_us_cts = us_cts;  in rack_exit_probertt()
4424 	rack->r_ctl.rc_time_of_last_probertt = us_cts;  in rack_exit_probertt()
4430 	/* Check in on probe-rtt */  in rack_check_probe_rtt()
4432 	if (rack->rc_gp_filled == 0) {  in rack_check_probe_rtt()
4433 		/* We do not do p-rtt unless we have gp measurements */  in rack_check_probe_rtt()
4436 	if (rack->in_probe_rtt) {  in rack_check_probe_rtt()
4440 		if (rack->r_ctl.rc_went_idle_time &&  in rack_check_probe_rtt()
4441 		    ((us_cts - rack->r_ctl.rc_went_idle_time) > rack_min_probertt_hold)) {  in rack_check_probe_rtt()
4447 		    TSTMP_GT(us_cts, rack->r_ctl.rc_time_probertt_entered) &&  in rack_check_probe_rtt()
4448 		    ((us_cts - rack->r_ctl.rc_time_probertt_entered) > rack_probe_rtt_safety_val)) {  in rack_check_probe_rtt()
4453 					     get_filter_value_small(&rack->r_ctl.rc_gp_min_rtt),  in rack_check_probe_rtt()
4458 		endtime = rack->r_ctl.rc_time_probertt_entered + (rack->r_ctl.rc_gp_srtt * rack_max_drain_wait);  in rack_check_probe_rtt()
4459 		if (rack->rc_highly_buffered)  in rack_check_probe_rtt()
4460 			endtime += (rack->r_ctl.rc_gp_srtt * rack_max_drain_hbp);  in rack_check_probe_rtt()
4462 		must_stay = rack->r_ctl.rc_time_probertt_entered + (rack->r_ctl.rc_gp_srtt * rack_must_drain);  in rack_check_probe_rtt()
4463 …if ((ctf_flight_size(rack->rc_tp, rack->r_ctl.rc_sacked) > rack->r_ctl.rc_target_probertt_flight) …  in rack_check_probe_rtt()
4468 			if (TSTMP_GT(us_cts, rack->r_ctl.rc_time_probertt_entered))  in rack_check_probe_rtt()
4469 				calc = us_cts - rack->r_ctl.rc_time_probertt_entered;  in rack_check_probe_rtt()
4472 			calc /= max(rack->r_ctl.rc_gp_srtt, 1);  in rack_check_probe_rtt()
4477 					rack->r_ctl.rack_per_of_gp_probertt = rack_per_of_gp_lowthresh;  in rack_check_probe_rtt()
4479 					rack->r_ctl.rack_per_of_gp_probertt = rack_per_of_gp_probertt - calc;  in rack_check_probe_rtt()
4481 				if (rack->r_ctl.rack_per_of_gp_probertt < rack_per_of_gp_lowthresh)  in rack_check_probe_rtt()
4482 					rack->r_ctl.rack_per_of_gp_probertt = rack_per_of_gp_lowthresh;  in rack_check_probe_rtt()
4487 		if (rack->r_ctl.rc_time_probertt_starts == 0) {  in rack_check_probe_rtt()
4489 			     rack->rc_highly_buffered) ||  in rack_check_probe_rtt()
4490 			     (ctf_flight_size(rack->rc_tp, rack->r_ctl.rc_sacked) >  in rack_check_probe_rtt()
4491 			      rack->r_ctl.rc_target_probertt_flight)) {  in rack_check_probe_rtt()
4496 					     get_filter_value_small(&rack->r_ctl.rc_gp_min_rtt),  in rack_check_probe_rtt()
4498 			rack->r_ctl.rc_time_probertt_starts = us_cts;  in rack_check_probe_rtt()
4499 			if (rack->r_ctl.rc_time_probertt_starts == 0)  in rack_check_probe_rtt()
4500 				rack->r_ctl.rc_time_probertt_starts = 1;  in rack_check_probe_rtt()
4502 			rack->r_ctl.rack_per_of_gp_probertt = rack_per_of_gp_probertt;  in rack_check_probe_rtt()
4507 		no_overflow = ((uint64_t)rack->r_ctl.rc_gp_srtt *  in rack_check_probe_rtt()
4514 		endtime += rack->r_ctl.rc_time_probertt_starts;  in rack_check_probe_rtt()
4520 	} else if ((rack->rc_skip_timely == 0) &&  in rack_check_probe_rtt()
4521 		   (TSTMP_GT(us_cts, rack->r_ctl.rc_lower_rtt_us_cts)) &&  in rack_check_probe_rtt()
4522 		   ((us_cts - rack->r_ctl.rc_lower_rtt_us_cts) >= rack_time_between_probertt)) {  in rack_check_probe_rtt()
4535 	if ((rack->rc_gp_dyn_mul == 0) ||  in rack_update_multiplier()
4536 	    (rack->use_fixed_rate) ||  in rack_update_multiplier()
4537 	    (rack->in_probe_rtt) ||  in rack_update_multiplier()
4538 	    (rack->rc_always_pace == 0)) {  in rack_update_multiplier()
4542 	losses = rack->r_ctl.rc_loss_count - rack->r_ctl.rc_loss_at_start;  in rack_update_multiplier()
4545 	up_bnd = rack->r_ctl.last_gp_comp_bw * (uint64_t)rack_gp_per_bw_mul_up;  in rack_update_multiplier()
4547 	up_bnd += rack->r_ctl.last_gp_comp_bw;  in rack_update_multiplier()
4549 	subfr = (uint64_t)rack->r_ctl.last_gp_comp_bw * (uint64_t)rack_gp_per_bw_mul_down;  in rack_update_multiplier()
4551 	low_bnd = rack->r_ctl.last_gp_comp_bw - subfr;  in rack_update_multiplier()
4552 	if ((timely_says == 2) && (rack->r_ctl.rc_no_push_at_mrtt)) {  in rack_update_multiplier()
4565 		if (rack->r_ctl.rc_no_push_at_mrtt > 1)  in rack_update_multiplier()
4584 		rack->r_ctl.last_gp_comp_bw = cur_bw;  in rack_update_multiplier()
4585 		if (rack->rc_gp_bwred == 0) {  in rack_update_multiplier()
4587 			rack->rc_gp_bwred = 1;  in rack_update_multiplier()
4588 			rack->rc_gp_timely_dec_cnt = 0;  in rack_update_multiplier()
4590 		if (rack->rc_gp_timely_dec_cnt < rack_timely_max_push_drop) {  in rack_update_multiplier()
4596 			if ((rack->rc_gp_saw_ca && rack->r_ctl.rack_per_of_gp_ca <= rack_down_raise_thresh) ||  in rack_update_multiplier()
4597 			    (rack->rc_gp_saw_ss && rack->r_ctl.rack_per_of_gp_ss <= rack_down_raise_thresh) ||  in rack_update_multiplier()
4611 			rack->rc_gp_timely_dec_cnt++;  in rack_update_multiplier()
4612 			/* We are not incrementing really no-count */  in rack_update_multiplier()
4613 			rack->rc_gp_incr = 0;  in rack_update_multiplier()
4614 			rack->rc_gp_timely_inc_cnt = 0;  in rack_update_multiplier()
4634 		rack->r_ctl.last_gp_comp_bw = cur_bw;  in rack_update_multiplier()
4635 		if (rack->rc_gp_saw_ss &&  in rack_update_multiplier()
4636 		    rack->r_ctl.rack_per_upper_bound_ss &&  in rack_update_multiplier()
4637 		     (rack->r_ctl.rack_per_of_gp_ss == rack->r_ctl.rack_per_upper_bound_ss)) {  in rack_update_multiplier()
4644 		if (rack->rc_gp_saw_ca &&  in rack_update_multiplier()
4645 		    rack->r_ctl.rack_per_upper_bound_ca &&  in rack_update_multiplier()
4646 		    (rack->r_ctl.rack_per_of_gp_ca == rack->r_ctl.rack_per_upper_bound_ca)) {  in rack_update_multiplier()
4653 		rack->rc_gp_bwred = 0;  in rack_update_multiplier()
4654 		rack->rc_gp_timely_dec_cnt = 0;  in rack_update_multiplier()
4656 		if ((rack->rc_gp_incr < rack_timely_max_push_rise) || (timely_says == 0)) {  in rack_update_multiplier()
4673 			rack->rc_gp_incr = 0;  in rack_update_multiplier()
4674 			rack->rc_gp_timely_inc_cnt = 0;  in rack_update_multiplier()
4675 			if ((rack->rc_gp_timely_dec_cnt < rack_timely_max_push_drop) &&  in rack_update_multiplier()
4680 				rack->rc_gp_timely_dec_cnt++;  in rack_update_multiplier()
4681 				/* We are not incrementing really no-count */  in rack_update_multiplier()
4682 				rack->rc_gp_incr = 0;  in rack_update_multiplier()
4683 				rack->rc_gp_timely_inc_cnt = 0;  in rack_update_multiplier()
4687 			rack->rc_gp_bwred = 0;  in rack_update_multiplier()
4688 			rack->rc_gp_timely_dec_cnt = 0;  in rack_update_multiplier()
4703 	if (rtt >= (get_filter_value_small(&rack->r_ctl.rc_gp_min_rtt) *  in rack_make_timely_judgement()
4707 		log_mult = get_filter_value_small(&rack->r_ctl.rc_gp_min_rtt) * rack_gp_rtt_maxmul;  in rack_make_timely_judgement()
4711 				get_filter_value_small(&rack->r_ctl.rc_gp_min_rtt),  in rack_make_timely_judgement()
4713 	} else if (rtt <= (get_filter_value_small(&rack->r_ctl.rc_gp_min_rtt) +  in rack_make_timely_judgement()
4714 			   ((get_filter_value_small(&rack->r_ctl.rc_gp_min_rtt) * rack_gp_rtt_minmul) /  in rack_make_timely_judgement()
4717 		log_mult = get_filter_value_small(&rack->r_ctl.rc_gp_min_rtt) +  in rack_make_timely_judgement()
4718 			((get_filter_value_small(&rack->r_ctl.rc_gp_min_rtt) * rack_gp_rtt_minmul) /  in rack_make_timely_judgement()
4724 				get_filter_value_small(&rack->r_ctl.rc_gp_min_rtt),  in rack_make_timely_judgement()
4747 					get_filter_value_small(&rack->r_ctl.rc_gp_min_rtt), log_rtt_a_diff, __LINE__, 6);  in rack_make_timely_judgement()
4752 					get_filter_value_small(&rack->r_ctl.rc_gp_min_rtt), log_rtt_a_diff, __LINE__, 7);  in rack_make_timely_judgement()
4761 	if (SEQ_GEQ(rsm->r_start, tp->gput_seq) &&  in rack_in_gp_window()
4762 	    SEQ_LEQ(rsm->r_end, tp->gput_ack)) {  in rack_in_gp_window()
4767 		 *      |----------------|  in rack_in_gp_window()
4768 		 *      |-----| <or>  in rack_in_gp_window()
4769 		 *            |----|  in rack_in_gp_window()
4770 		 *            <or>   |---|  in rack_in_gp_window()
4773 	} else if (SEQ_LT(rsm->r_start, tp->gput_seq) &&  in rack_in_gp_window()
4774 		   SEQ_GT(rsm->r_end, tp->gput_seq)){  in rack_in_gp_window()
4777 		 *      |--------------|  in rack_in_gp_window()
4778 		 *  |-------->|  in rack_in_gp_window()
4781 	} else if (SEQ_GEQ(rsm->r_start, tp->gput_seq) &&  in rack_in_gp_window()
4782 		   SEQ_LT(rsm->r_start, tp->gput_ack) &&  in rack_in_gp_window()
4783 		   SEQ_GEQ(rsm->r_end, tp->gput_ack)) {  in rack_in_gp_window()
4787 		 *      |--------------|  in rack_in_gp_window()
4788 		 *              |-------->|  in rack_in_gp_window()
4799 	if ((tp->t_flags & TF_GPUTINPROG) == 0)  in rack_mark_in_gp_win()
4807 		rsm->r_flags |= RACK_IN_GP_WIN;  in rack_mark_in_gp_win()
4809 		rsm->r_flags &= ~RACK_IN_GP_WIN;  in rack_mark_in_gp_win()
4818 	rsm = tqhash_find(rack->r_ctl.tqh, tp->gput_seq);  in rack_clear_gp_marks()
4820 		rsm = tqhash_min(rack->r_ctl.tqh);  in rack_clear_gp_marks()
4823 	while ((rsm != NULL) && (SEQ_GEQ(tp->gput_ack, rsm->r_start))){  in rack_clear_gp_marks()
4824 		rsm->r_flags &= ~RACK_IN_GP_WIN;  in rack_clear_gp_marks()
4825 		rsm = tqhash_next(rack->r_ctl.tqh, rsm);  in rack_clear_gp_marks()
4835 	if (tp->snd_una == tp->snd_max) {  in rack_tend_gp_marks()
4839 	if (SEQ_GT(tp->gput_seq, tp->snd_una)) {  in rack_tend_gp_marks()
4846 		rsm = tqhash_min(rack->r_ctl.tqh);  in rack_tend_gp_marks()
4849 			if (SEQ_GEQ(rsm->r_end, tp->gput_seq))  in rack_tend_gp_marks()
4851 			rsm = tqhash_next(rack->r_ctl.tqh, rsm);  in rack_tend_gp_marks()
4859 		rsm = tqhash_find(rack->r_ctl.tqh, tp->gput_seq);  in rack_tend_gp_marks()
4867 	 * *before* we started our measurment. The rsm, if non-null  in rack_tend_gp_marks()
4872 	rsm = tqhash_next(rack->r_ctl.tqh, rsm);  in rack_tend_gp_marks()
4875 		if (SEQ_GT(rsm->r_end, tp->gput_ack))  in rack_tend_gp_marks()
4877 		rsm = tqhash_next(rack->r_ctl.tqh, rsm);  in rack_tend_gp_marks()
4884 	if (tcp_bblogging_on(rack->rc_tp)) {  in rack_log_gp_calc()
4896 		log.u_bbr.delRate = rack->r_ctl.gp_bw;  in rack_log_gp_calc()
4899 		TCP_LOG_EVENTP(rack->rc_tp, NULL,  in rack_log_gp_calc()
4900 		    &rack->rc_inp->inp_socket->so_rcv,  in rack_log_gp_calc()
4901 		    &rack->rc_inp->inp_socket->so_snd,  in rack_log_gp_calc()
4903 		    0, &log, false, &rack->r_ctl.act_rcv_time);  in rack_log_gp_calc()
4917 	us_cts = tcp_tv_to_usectick(&rack->r_ctl.act_rcv_time);  in rack_do_goodput_measurement()
4918 	segsiz = min(ctf_fixed_maxseg(tp), rack->r_ctl.rc_pace_min_segs);  in rack_do_goodput_measurement()
4919 	if (TSTMP_GEQ(us_cts, tp->gput_ts))  in rack_do_goodput_measurement()
4920 		tim = us_cts - tp->gput_ts;  in rack_do_goodput_measurement()
4923 	if (rack->r_ctl.rc_gp_cumack_ts > rack->r_ctl.rc_gp_output_ts)  in rack_do_goodput_measurement()
4924 		stim = rack->r_ctl.rc_gp_cumack_ts - rack->r_ctl.rc_gp_output_ts;  in rack_do_goodput_measurement()
4939 	rack_log_gpset(rack, th_ack, us_cts, rack->r_ctl.rc_gp_cumack_ts, __LINE__, 3, NULL);  in rack_do_goodput_measurement()
4951 	if (rack->r_ctl.rc_gp_lowrtt == 0xffffffff) {  in rack_do_goodput_measurement()
4985 	rack->r_ctl.last_max_bw = rack->r_ctl.rc_gp_high_rwnd;  in rack_do_goodput_measurement()
4986 	rack->r_ctl.last_max_bw *= HPTS_USEC_IN_SEC;  in rack_do_goodput_measurement()
4987 	rack->r_ctl.last_max_bw /= rack->r_ctl.rc_gp_lowrtt;  in rack_do_goodput_measurement()
4988 	if (SEQ_LT(th_ack, tp->gput_seq)) {  in rack_do_goodput_measurement()
4996 		bytes = (th_ack - tp->gput_seq);  in rack_do_goodput_measurement()
5007 	if (rack->rc_gp_filled == 0) {  in rack_do_goodput_measurement()
5016 		 * IW - 2MSS.  in rack_do_goodput_measurement()
5018 		reqbytes -= (2 * segsiz);  in rack_do_goodput_measurement()
5020 		rack->r_ctl.rc_prev_gp_srtt = rack->r_ctl.rc_gp_srtt;  in rack_do_goodput_measurement()
5022 	if ((bytes_ps < reqbytes) || rack->app_limited_needs_set) {  in rack_do_goodput_measurement()
5024 					   rack->r_ctl.rc_app_limited_cnt,  in rack_do_goodput_measurement()
5032 	new_rtt_diff = (int32_t)rack->r_ctl.rc_gp_srtt - (int32_t)rack->r_ctl.rc_prev_gp_srtt;  in rack_do_goodput_measurement()
5033 	if (rack->rc_gp_filled == 0) {  in rack_do_goodput_measurement()
5035 		rack->r_ctl.rc_rtt_diff = new_rtt_diff;  in rack_do_goodput_measurement()
5037 		if (rack->measure_saw_probe_rtt == 0) {  in rack_do_goodput_measurement()
5044 			rack->r_ctl.rc_rtt_diff -= (rack->r_ctl.rc_rtt_diff / 8);  in rack_do_goodput_measurement()
5045 			rack->r_ctl.rc_rtt_diff += (new_rtt_diff / 8);  in rack_do_goodput_measurement()
5049 	    rack->r_ctl.rc_gp_srtt,  in rack_do_goodput_measurement()
5050 	    rack->r_ctl.rc_rtt_diff,  in rack_do_goodput_measurement()
5051 	    rack->r_ctl.rc_prev_gp_srtt  in rack_do_goodput_measurement()
5055 	if (bytes_ps > rack->r_ctl.last_max_bw) {  in rack_do_goodput_measurement()
5066 					   bytes_ps, rack->r_ctl.last_max_bw, 0,  in rack_do_goodput_measurement()
5068 		bytes_ps = rack->r_ctl.last_max_bw;  in rack_do_goodput_measurement()
5071 	if (rack->rc_gp_filled == 0) {  in rack_do_goodput_measurement()
5074 			rack->r_ctl.gp_bw = bytes_ps;  in rack_do_goodput_measurement()
5075 			rack->rc_gp_filled = 1;  in rack_do_goodput_measurement()
5076 			rack->r_ctl.num_measurements = 1;  in rack_do_goodput_measurement()
5077 			rack_set_pace_segments(rack->rc_tp, rack, __LINE__, NULL);  in rack_do_goodput_measurement()
5080 						   rack->r_ctl.rc_app_limited_cnt,  in rack_do_goodput_measurement()
5083 		if (tcp_in_hpts(rack->rc_tp) &&  in rack_do_goodput_measurement()
5084 		    (rack->r_ctl.rc_hpts_flags & PACE_PKT_OUTPUT)) {  in rack_do_goodput_measurement()
5087 			 * where we transition from un-paced to paced.  in rack_do_goodput_measurement()
5093 			tcp_hpts_remove(rack->rc_tp);  in rack_do_goodput_measurement()
5094 			rack->r_ctl.rc_hpts_flags = 0;  in rack_do_goodput_measurement()
5095 			rack->r_ctl.rc_last_output_to = 0;  in rack_do_goodput_measurement()
5098 	} else if (rack->r_ctl.num_measurements < RACK_REQ_AVG) {  in rack_do_goodput_measurement()
5100 		rack->r_ctl.gp_bw += bytes_ps;  in rack_do_goodput_measurement()
5101 		addpart = rack->r_ctl.num_measurements;  in rack_do_goodput_measurement()
5102 		rack->r_ctl.num_measurements++;  in rack_do_goodput_measurement()
5103 		if (rack->r_ctl.num_measurements >= RACK_REQ_AVG) {  in rack_do_goodput_measurement()
5105 			rack->r_ctl.gp_bw /= (uint64_t)rack->r_ctl.num_measurements;  in rack_do_goodput_measurement()
5124 		if (rack->r_ctl.num_measurements < 0xff) {  in rack_do_goodput_measurement()
5125 			rack->r_ctl.num_measurements++;  in rack_do_goodput_measurement()
5127 		srtt = (uint64_t)tp->t_srtt;  in rack_do_goodput_measurement()
5132 			if (rack->r_ctl.rc_rack_min_rtt)  in rack_do_goodput_measurement()
5133 				srtt = rack->r_ctl.rc_rack_min_rtt;  in rack_do_goodput_measurement()
5148 		 * and non-dynamic... but considering lots of folks  in rack_do_goodput_measurement()
5153 		if (rack->rc_gp_dyn_mul == 0) {  in rack_do_goodput_measurement()
5154 			subpart = rack->r_ctl.gp_bw * utim;  in rack_do_goodput_measurement()
5156 			if (subpart < (rack->r_ctl.gp_bw / 2)) {  in rack_do_goodput_measurement()
5175 				subpart = rack->r_ctl.gp_bw / 2;  in rack_do_goodput_measurement()
5180 			resid_bw = rack->r_ctl.gp_bw - subpart;  in rack_do_goodput_measurement()
5181 			rack->r_ctl.gp_bw = resid_bw + addpart;  in rack_do_goodput_measurement()
5193 				subpart = rack->r_ctl.gp_bw * utim;  in rack_do_goodput_measurement()
5204 				subpart = rack->r_ctl.gp_bw / rack_wma_divisor;  in rack_do_goodput_measurement()
5208 			if ((rack->measure_saw_probe_rtt == 0) ||  in rack_do_goodput_measurement()
5209 		            (bytes_ps > rack->r_ctl.gp_bw)) {  in rack_do_goodput_measurement()
5211 				 * For probe-rtt we only add it in  in rack_do_goodput_measurement()
5217 				resid_bw = rack->r_ctl.gp_bw - subpart;  in rack_do_goodput_measurement()
5218 				rack->r_ctl.gp_bw = resid_bw + addpart;  in rack_do_goodput_measurement()
5225 	 * or first-slowstart that ensues. If we ever needed to watch  in rack_do_goodput_measurement()
5229 	if ((rack->rc_initial_ss_comp == 0) &&  in rack_do_goodput_measurement()
5230 	    (rack->r_ctl.num_measurements >= RACK_REQ_AVG)) {  in rack_do_goodput_measurement()
5234 		if (tcp_bblogging_on(rack->rc_tp)) {  in rack_do_goodput_measurement()
5240 			log.u_bbr.flex1 = rack->r_ctl.current_round;  in rack_do_goodput_measurement()
5241 			log.u_bbr.flex2 = rack->r_ctl.last_rnd_of_gp_rise;  in rack_do_goodput_measurement()
5243 			log.u_bbr.cur_del_rate = rack->r_ctl.last_gpest;  in rack_do_goodput_measurement()
5248 		if ((rack->r_ctl.num_measurements == RACK_REQ_AVG) ||  in rack_do_goodput_measurement()
5249 		    (rack->r_ctl.last_gpest == 0)) {  in rack_do_goodput_measurement()
5256 			rack->r_ctl.last_rnd_of_gp_rise = rack->r_ctl.current_round;  in rack_do_goodput_measurement()
5257 			rack->r_ctl.last_gpest = rack->r_ctl.gp_bw;  in rack_do_goodput_measurement()
5258 		} else if (gp_est >= rack->r_ctl.last_gpest) {  in rack_do_goodput_measurement()
5260 			 * Test to see if its gone up enough  in rack_do_goodput_measurement()
5265 			gp_est /= rack->r_ctl.last_gpest;  in rack_do_goodput_measurement()
5266 			if ((uint32_t)gp_est > rack->r_ctl.gp_gain_req) {  in rack_do_goodput_measurement()
5270 				if (tcp_bblogging_on(rack->rc_tp)) {  in rack_do_goodput_measurement()
5276 					log.u_bbr.flex1 = rack->r_ctl.current_round;  in rack_do_goodput_measurement()
5278 					log.u_bbr.flex3 = rack->r_ctl.gp_gain_req;  in rack_do_goodput_measurement()
5280 					log.u_bbr.cur_del_rate = rack->r_ctl.last_gpest;  in rack_do_goodput_measurement()
5285 				rack->r_ctl.last_rnd_of_gp_rise = rack->r_ctl.current_round;  in rack_do_goodput_measurement()
5286 				if (rack->r_ctl.use_gp_not_last == 1)  in rack_do_goodput_measurement()
5287 					rack->r_ctl.last_gpest = rack->r_ctl.gp_bw;  in rack_do_goodput_measurement()
5289 					rack->r_ctl.last_gpest = bytes_ps;  in rack_do_goodput_measurement()
5293 	if ((rack->gp_ready == 0) &&  in rack_do_goodput_measurement()
5294 	    (rack->r_ctl.num_measurements >= rack->r_ctl.req_measurements)) {  in rack_do_goodput_measurement()
5296 		rack->gp_ready = 1;  in rack_do_goodput_measurement()
5297 		if (rack->dgp_on ||  in rack_do_goodput_measurement()
5298 		    rack->rack_hibeta)  in rack_do_goodput_measurement()
5300 		if (rack->defer_options)  in rack_do_goodput_measurement()
5305 	/* We do not update any multipliers if we are in or have seen a probe-rtt */  in rack_do_goodput_measurement()
5307 	if ((rack->measure_saw_probe_rtt == 0) &&  in rack_do_goodput_measurement()
5308 	    rack->rc_gp_rtt_set) {  in rack_do_goodput_measurement()
5309 		if (rack->rc_skip_timely == 0) {  in rack_do_goodput_measurement()
5311 					       rack->r_ctl.rc_gp_srtt,  in rack_do_goodput_measurement()
5312 					       rack->r_ctl.rc_rtt_diff);  in rack_do_goodput_measurement()
5321 				   rack->r_ctl.gp_bw, /* delRate */  in rack_do_goodput_measurement()
5325 	rack->r_ctl.rc_prev_gp_srtt = rack->r_ctl.rc_gp_srtt;  in rack_do_goodput_measurement()
5327 	rack->r_ctl.rc_loss_at_start = rack->r_ctl.rc_loss_count;  in rack_do_goodput_measurement()
5333 	rack->rc_gp_rtt_set = 0;  in rack_do_goodput_measurement()
5334 	rack->rc_gp_saw_rec = 0;  in rack_do_goodput_measurement()
5335 	rack->rc_gp_saw_ca = 0;  in rack_do_goodput_measurement()
5336 	rack->rc_gp_saw_ss = 0;  in rack_do_goodput_measurement()
5337 	rack->rc_dragged_bottom = 0;  in rack_do_goodput_measurement()
5345 		stats_voi_update_abs_u32(tp->t_stats, VOI_TCP_GPUT,  in rack_do_goodput_measurement()
5352 		if (tp->t_stats_gput_prev > 0)  in rack_do_goodput_measurement()
5353 			stats_voi_update_abs_s32(tp->t_stats,  in rack_do_goodput_measurement()
5355 						 ((gput - tp->t_stats_gput_prev) * 100) /  in rack_do_goodput_measurement()
5356 						 tp->t_stats_gput_prev);  in rack_do_goodput_measurement()
5358 		tp->t_stats_gput_prev = gput;  in rack_do_goodput_measurement()
5360 	tp->t_flags &= ~TF_GPUTINPROG;  in rack_do_goodput_measurement()
5365 	 * We don't do the other case i.e. non-applimited here since  in rack_do_goodput_measurement()
5368 	if (rack->r_ctl.rc_first_appl &&  in rack_do_goodput_measurement()
5369 	    TCPS_HAVEESTABLISHED(tp->t_state) &&  in rack_do_goodput_measurement()
5370 	    rack->r_ctl.rc_app_limited_cnt &&  in rack_do_goodput_measurement()
5371 	    (SEQ_GT(rack->r_ctl.rc_first_appl->r_start, th_ack)) &&  in rack_do_goodput_measurement()
5372 	    ((rack->r_ctl.rc_first_appl->r_end - th_ack) >  in rack_do_goodput_measurement()
5379 		rack->r_ctl.rc_gp_lowrtt = 0xffffffff;  in rack_do_goodput_measurement()
5380 		rack->r_ctl.rc_gp_high_rwnd = rack->rc_tp->snd_wnd;  in rack_do_goodput_measurement()
5381 		tp->gput_ts = tcp_tv_to_usectick(&rack->r_ctl.act_rcv_time);  in rack_do_goodput_measurement()
5382 		rack->app_limited_needs_set = 0;  in rack_do_goodput_measurement()
5383 		tp->gput_seq = th_ack;  in rack_do_goodput_measurement()
5384 		if (rack->in_probe_rtt)  in rack_do_goodput_measurement()
5385 			rack->measure_saw_probe_rtt = 1;  in rack_do_goodput_measurement()
5386 		else if ((rack->measure_saw_probe_rtt) &&  in rack_do_goodput_measurement()
5387 			 (SEQ_GEQ(tp->gput_seq, rack->r_ctl.rc_probertt_sndmax_atexit)))  in rack_do_goodput_measurement()
5388 			rack->measure_saw_probe_rtt = 0;  in rack_do_goodput_measurement()
5389 		if ((rack->r_ctl.rc_first_appl->r_end - th_ack) >= rack_get_measure_window(tp, rack)) {  in rack_do_goodput_measurement()
5391 			tp->gput_ack = tp->gput_seq + rack_get_measure_window(tp, rack);  in rack_do_goodput_measurement()
5394 			tp->gput_ack = tp->gput_seq + (rack->r_ctl.rc_first_appl->r_end - th_ack);  in rack_do_goodput_measurement()
5395 			if ((tp->gput_ack - tp->gput_seq) < (MIN_GP_WIN * segsiz)) {  in rack_do_goodput_measurement()
5399 				tp->t_flags &= ~TF_GPUTINPROG;  in rack_do_goodput_measurement()
5400 				rack_log_pacing_delay_calc(rack, tp->gput_ack, tp->gput_seq,  in rack_do_goodput_measurement()
5405 		if (tp->t_state >= TCPS_FIN_WAIT_1) {  in rack_do_goodput_measurement()
5411 			if (sbavail(&tptosocket(tp)->so_snd) < (tp->gput_ack - tp->gput_seq)) {  in rack_do_goodput_measurement()
5416 		tp->t_flags |= TF_GPUTINPROG;  in rack_do_goodput_measurement()
5418 		 * Now we need to find the timestamp of the send at tp->gput_seq  in rack_do_goodput_measurement()
5421 		rack->r_ctl.rc_gp_cumack_ts = 0;  in rack_do_goodput_measurement()
5422 		rsm = tqhash_find(rack->r_ctl.tqh, tp->gput_seq);  in rack_do_goodput_measurement()
5424 			/* Ok send-based limit is set */  in rack_do_goodput_measurement()
5425 			if (SEQ_LT(rsm->r_start, tp->gput_seq)) {  in rack_do_goodput_measurement()
5432 				tp->gput_seq = rsm->r_start;  in rack_do_goodput_measurement()
5434 			if (rsm->r_flags & RACK_ACKED) {  in rack_do_goodput_measurement()
5437 				tp->gput_ts = (uint32_t)rsm->r_ack_arrival;  in rack_do_goodput_measurement()
5438 				tp->gput_seq = rsm->r_end;  in rack_do_goodput_measurement()
5439 				nrsm = tqhash_next(rack->r_ctl.tqh, rsm);  in rack_do_goodput_measurement()
5443 					rack->app_limited_needs_set = 1;  in rack_do_goodput_measurement()
5446 				rack->app_limited_needs_set = 1;  in rack_do_goodput_measurement()
5448 			rack->r_ctl.rc_gp_output_ts = rsm->r_tim_lastsent[0];  in rack_do_goodput_measurement()
5452 			 * send-limit set the current time, which  in rack_do_goodput_measurement()
5453 			 * basically disables the send-limit.  in rack_do_goodput_measurement()
5458 			rack->r_ctl.rc_gp_output_ts = rack_to_usec_ts(&tv);  in rack_do_goodput_measurement()
5462 					   tp->gput_seq,  in rack_do_goodput_measurement()
5463 					   tp->gput_ack,  in rack_do_goodput_measurement()
5465 					   tp->gput_ts,  in rack_do_goodput_measurement()
5466 					   (((uint64_t)rack->r_ctl.rc_app_limited_cnt << 32) | (uint64_t)rack->r_ctl.rc_gp_output_ts),  in rack_do_goodput_measurement()
5469 		rack_log_gpset(rack, tp->gput_ack, 0, 0, __LINE__, 1, NULL);  in rack_do_goodput_measurement()
5491 	tp->t_ccv.nsegs = nsegs;  in rack_ack_received()
5492 	acked = tp->t_ccv.bytes_this_ack = (th_ack - tp->snd_una);  in rack_ack_received()
5493 	if ((post_recovery) && (rack->r_ctl.rc_early_recovery_segs)) {  in rack_ack_received()
5496 		max = rack->r_ctl.rc_early_recovery_segs * ctf_fixed_maxseg(tp);  in rack_ack_received()
5497 		if (tp->t_ccv.bytes_this_ack > max) {  in rack_ack_received()
5498 			tp->t_ccv.bytes_this_ack = max;  in rack_ack_received()
5502 	stats_voi_update_abs_s32(tp->t_stats, VOI_TCP_CALCFRWINDIFF,  in rack_ack_received()
5503 	    ((int32_t)rack->r_ctl.cwnd_to_use) - tp->snd_wnd);  in rack_ack_received()
5505 	if ((th_ack == tp->snd_max) && rack->lt_bw_up) {  in rack_ack_received()
5514 		rack->r_ctl.lt_bw_bytes += (tp->snd_max - rack->r_ctl.lt_seq);  in rack_ack_received()
5515 		rack->r_ctl.lt_seq = tp->snd_max;  in rack_ack_received()
5516 		tmark = tcp_tv_to_lusectick(&rack->r_ctl.act_rcv_time);  in rack_ack_received()
5517 		if (tmark >= rack->r_ctl.lt_timemark) {  in rack_ack_received()
5518 			rack->r_ctl.lt_bw_time += (tmark - rack->r_ctl.lt_timemark);  in rack_ack_received()
5520 		rack->r_ctl.lt_timemark = tmark;  in rack_ack_received()
5521 		rack->lt_bw_up = 0;  in rack_ack_received()
5524 	if ((tp->t_flags & TF_GPUTINPROG) &&  in rack_ack_received()
5530 	if (tp->snd_cwnd <= tp->snd_wnd)  in rack_ack_received()
5531 		tp->t_ccv.flags |= CCF_CWND_LIMITED;  in rack_ack_received()
5533 		tp->t_ccv.flags &= ~CCF_CWND_LIMITED;  in rack_ack_received()
5534 	if (tp->snd_cwnd > tp->snd_ssthresh) {  in rack_ack_received()
5535 		tp->t_bytes_acked += min(tp->t_ccv.bytes_this_ack,  in rack_ack_received()
5538 		if (tp->t_bytes_acked >= rack->r_ctl.cwnd_to_use) {  in rack_ack_received()
5539 			tp->t_bytes_acked -= rack->r_ctl.cwnd_to_use;  in rack_ack_received()
5540 			tp->t_ccv.flags |= CCF_ABC_SENTAWND;  in rack_ack_received()
5543 		tp->t_ccv.flags &= ~CCF_ABC_SENTAWND;  in rack_ack_received()
5544 		tp->t_bytes_acked = 0;  in rack_ack_received()
5546 	prior_cwnd = tp->snd_cwnd;  in rack_ack_received()
5547 	if ((post_recovery == 0) || (rack_max_abc_post_recovery == 0) || rack->r_use_labc_for_rec ||  in rack_ack_received()
5548 	    (rack_client_low_buf && rack->client_bufferlvl &&  in rack_ack_received()
5549 	    (rack->client_bufferlvl < rack_client_low_buf)))  in rack_ack_received()
5550 		labc_to_use = rack->rc_labc;  in rack_ack_received()
5553 	if (rack_verbose_logging && tcp_bblogging_on(rack->rc_tp)) {  in rack_ack_received()
5560 		log.u_bbr.flex2 = tp->t_ccv.flags;  in rack_ack_received()
5561 		log.u_bbr.flex3 = tp->t_ccv.bytes_this_ack;  in rack_ack_received()
5562 		log.u_bbr.flex4 = tp->t_ccv.nsegs;  in rack_ack_received()
5570 	if (CC_ALGO(tp)->ack_received != NULL) {  in rack_ack_received()
5572 		tp->t_ccv.curack = th_ack;  in rack_ack_received()
5573 		tp->t_ccv.labc = labc_to_use;  in rack_ack_received()
5574 		tp->t_ccv.flags |= CCF_USE_LOCAL_ABC;  in rack_ack_received()
5575 		CC_ALGO(tp)->ack_received(&tp->t_ccv, type);  in rack_ack_received()
5578 		lgb->tlb_stackinfo.u_bbr.flex6 = tp->snd_cwnd;  in rack_ack_received()
5580 	if (rack->r_must_retran) {  in rack_ack_received()
5581 		if (SEQ_GEQ(th_ack, rack->r_ctl.rc_snd_max_at_rto)) {  in rack_ack_received()
5586 			rack->r_ctl.rc_out_at_rto = 0;  in rack_ack_received()
5587 			rack->r_must_retran = 0;  in rack_ack_received()
5588 		} else if ((prior_cwnd + ctf_fixed_maxseg(tp)) <= tp->snd_cwnd) {  in rack_ack_received()
5595 			if (acked <= rack->r_ctl.rc_out_at_rto){  in rack_ack_received()
5596 				rack->r_ctl.rc_out_at_rto -= acked;  in rack_ack_received()
5598 				rack->r_ctl.rc_out_at_rto = 0;  in rack_ack_received()
5603 	stats_voi_update_abs_ulong(tp->t_stats, VOI_TCP_LCWIN, rack->r_ctl.cwnd_to_use);  in rack_ack_received()
5605 	if (rack->r_ctl.rc_rack_largest_cwnd < rack->r_ctl.cwnd_to_use) {  in rack_ack_received()
5606 		rack->r_ctl.rc_rack_largest_cwnd = rack->r_ctl.cwnd_to_use;  in rack_ack_received()
5608 	if ((rack->rc_initial_ss_comp == 0) &&  in rack_ack_received()
5609 	    (tp->snd_cwnd >= tp->snd_ssthresh)) {  in rack_ack_received()
5614 		rack->rc_initial_ss_comp = 1;  in rack_ack_received()
5623 	rack = (struct tcp_rack *)tp->t_fb_ptr;  in tcp_rack_partialack()
5632 	if ((rack->r_ctl.rc_prr_sndcnt > 0) ||  in tcp_rack_partialack()
5633 	    rack->rack_no_prr)  in tcp_rack_partialack()
5634 		rack->r_wanted_output = 1;  in tcp_rack_partialack()
5643 	EXIT_RECOVERY(tp->t_flags);  in rack_exit_recovery()
5652 	orig_cwnd = tp->snd_cwnd;  in rack_post_recovery()
5654 	rack = (struct tcp_rack *)tp->t_fb_ptr;  in rack_post_recovery()
5656 	if (CC_ALGO(tp)->post_recovery != NULL) {  in rack_post_recovery()
5657 		tp->t_ccv.curack = th_ack;  in rack_post_recovery()
5658 		CC_ALGO(tp)->post_recovery(&tp->t_ccv);  in rack_post_recovery()
5659 		if (tp->snd_cwnd < tp->snd_ssthresh) {  in rack_post_recovery()
5663 			 * snd_ssthresh per RFC-6582 (option 2).  in rack_post_recovery()
5665 			tp->snd_cwnd = tp->snd_ssthresh;  in rack_post_recovery()
5668 	if (rack_verbose_logging && tcp_bblogging_on(rack->rc_tp)) {  in rack_post_recovery()
5675 		log.u_bbr.flex2 = tp->t_ccv.flags;  in rack_post_recovery()
5676 		log.u_bbr.flex3 = tp->t_ccv.bytes_this_ack;  in rack_post_recovery()
5677 		log.u_bbr.flex4 = tp->t_ccv.nsegs;  in rack_post_recovery()
5681 		log.u_bbr.pkts_out = rack->r_ctl.rc_prr_sndcnt;  in rack_post_recovery()
5686 	if ((rack->rack_no_prr == 0) &&  in rack_post_recovery()
5687 	    (rack->no_prr_addback == 0) &&  in rack_post_recovery()
5688 	    (rack->r_ctl.rc_prr_sndcnt > 0)) {  in rack_post_recovery()
5693 		if (ctf_outstanding(tp) <= sbavail(&tptosocket(tp)->so_snd)) {  in rack_post_recovery()
5703 			tp->snd_cwnd += min((ctf_fixed_maxseg(tp) * rack_prr_addbackmax),  in rack_post_recovery()
5704 					    rack->r_ctl.rc_prr_sndcnt);  in rack_post_recovery()
5706 		rack->r_ctl.rc_prr_sndcnt = 0;  in rack_post_recovery()
5710 	tp->snd_recover = tp->snd_una;  in rack_post_recovery()
5711 	if (rack->r_ctl.dsack_persist) {  in rack_post_recovery()
5712 		rack->r_ctl.dsack_persist--;  in rack_post_recovery()
5713 		if (rack->r_ctl.num_dsack && (rack->r_ctl.dsack_persist == 0)) {  in rack_post_recovery()
5714 			rack->r_ctl.num_dsack = 0;  in rack_post_recovery()
5718 	if (rack->rto_from_rec == 1) {  in rack_post_recovery()
5719 		rack->rto_from_rec = 0;  in rack_post_recovery()
5720 		if (rack->r_ctl.rto_ssthresh > tp->snd_ssthresh)  in rack_post_recovery()
5721 			tp->snd_ssthresh = rack->r_ctl.rto_ssthresh;  in rack_post_recovery()
5734 	stats_voi_update_abs_u32(tp->t_stats, VOI_TCP_CSIG, type);  in rack_cong_signal()
5736 	if (IN_RECOVERY(tp->t_flags) == 0) {  in rack_cong_signal()
5738 		ssthresh_enter = tp->snd_ssthresh;  in rack_cong_signal()
5739 		cwnd_enter = tp->snd_cwnd;  in rack_cong_signal()
5742 	rack = (struct tcp_rack *)tp->t_fb_ptr;  in rack_cong_signal()
5745 		tp->t_flags &= ~TF_WASFRECOVERY;  in rack_cong_signal()
5746 		tp->t_flags &= ~TF_WASCRECOVERY;  in rack_cong_signal()
5747 		if (!IN_FASTRECOVERY(tp->t_flags)) {  in rack_cong_signal()
5748 			/* Check if this is the end of the initial Start-up i.e. initial slow-start */  in rack_cong_signal()
5749 			if (rack->rc_initial_ss_comp == 0) {  in rack_cong_signal()
5751 				rack->rc_initial_ss_comp = 1;  in rack_cong_signal()
5753 			rack->r_ctl.rc_prr_delivered = 0;  in rack_cong_signal()
5754 			rack->r_ctl.rc_prr_out = 0;  in rack_cong_signal()
5755 			rack->r_fast_output = 0;  in rack_cong_signal()
5756 			if (rack->rack_no_prr == 0) {  in rack_cong_signal()
5757 				rack->r_ctl.rc_prr_sndcnt = ctf_fixed_maxseg(tp);  in rack_cong_signal()
5760 			rack->r_ctl.rc_prr_recovery_fs = tp->snd_max - tp->snd_una;  in rack_cong_signal()
5761 			tp->snd_recover = tp->snd_max;  in rack_cong_signal()
5762 			if (tp->t_flags2 & TF2_ECN_PERMIT)  in rack_cong_signal()
5763 				tp->t_flags2 |= TF2_ECN_SND_CWR;  in rack_cong_signal()
5767 		if (!IN_CONGRECOVERY(tp->t_flags) ||  in rack_cong_signal()
5772 		    SEQ_GEQ(ack, tp->snd_recover)) {  in rack_cong_signal()
5773 			EXIT_CONGRECOVERY(tp->t_flags);  in rack_cong_signal()
5775 			rack->r_fast_output = 0;  in rack_cong_signal()
5776 			tp->snd_recover = tp->snd_max + 1;  in rack_cong_signal()
5777 			if (tp->t_flags2 & TF2_ECN_PERMIT)  in rack_cong_signal()
5778 				tp->t_flags2 |= TF2_ECN_SND_CWR;  in rack_cong_signal()
5782 		tp->t_dupacks = 0;  in rack_cong_signal()
5783 		tp->t_bytes_acked = 0;  in rack_cong_signal()
5784 		rack->r_fast_output = 0;  in rack_cong_signal()
5785 		if (IN_RECOVERY(tp->t_flags))  in rack_cong_signal()
5787 		orig_cwnd = tp->snd_cwnd;  in rack_cong_signal()
5789 		if (CC_ALGO(tp)->cong_signal == NULL) {  in rack_cong_signal()
5791 			tp->snd_ssthresh = max(2,  in rack_cong_signal()
5792 			    min(tp->snd_wnd, rack->r_ctl.cwnd_to_use) / 2 /  in rack_cong_signal()
5794 			tp->snd_cwnd = ctf_fixed_maxseg(tp);  in rack_cong_signal()
5796 		if (tp->t_flags2 & TF2_ECN_PERMIT)  in rack_cong_signal()
5797 			tp->t_flags2 |= TF2_ECN_SND_CWR;  in rack_cong_signal()
5802 		tp->snd_cwnd = tp->snd_cwnd_prev;  in rack_cong_signal()
5803 		tp->snd_ssthresh = tp->snd_ssthresh_prev;  in rack_cong_signal()
5804 		tp->snd_recover = tp->snd_recover_prev;  in rack_cong_signal()
5805 		if (tp->t_flags & TF_WASFRECOVERY) {  in rack_cong_signal()
5806 			ENTER_FASTRECOVERY(tp->t_flags);  in rack_cong_signal()
5807 			tp->t_flags &= ~TF_WASFRECOVERY;  in rack_cong_signal()
5809 		if (tp->t_flags & TF_WASCRECOVERY) {  in rack_cong_signal()
5810 			ENTER_CONGRECOVERY(tp->t_flags);  in rack_cong_signal()
5811 			tp->t_flags &= ~TF_WASCRECOVERY;  in rack_cong_signal()
5813 		tp->snd_nxt = tp->snd_max;  in rack_cong_signal()
5814 		tp->t_badrxtwin = 0;  in rack_cong_signal()
5817 	if ((CC_ALGO(tp)->cong_signal != NULL)  &&  in rack_cong_signal()
5819 		tp->t_ccv.curack = ack;  in rack_cong_signal()
5820 		CC_ALGO(tp)->cong_signal(&tp->t_ccv, type);  in rack_cong_signal()
5822 	if ((in_rec_at_entry == 0) && IN_RECOVERY(tp->t_flags)) {  in rack_cong_signal()
5824 		rack->r_ctl.dsack_byte_cnt = 0;  in rack_cong_signal()
5825 		rack->r_ctl.retran_during_recovery = 0;  in rack_cong_signal()
5826 		rack->r_ctl.rc_cwnd_at_erec = cwnd_enter;  in rack_cong_signal()
5827 		rack->r_ctl.rc_ssthresh_at_erec = ssthresh_enter;  in rack_cong_signal()
5828 		rack->r_ent_rec_ns = 1;  in rack_cong_signal()
5839 	if (CC_ALGO(tp)->after_idle != NULL)  in rack_cc_after_idle()
5840 		CC_ALGO(tp)->after_idle(&tp->t_ccv);  in rack_cc_after_idle()
5842 	if (tp->snd_cwnd == 1)  in rack_cc_after_idle()
5843 		i_cwnd = tp->t_maxseg;		/* SYN(-ACK) lost */  in rack_cc_after_idle()
5852 	if (tp->snd_cwnd < i_cwnd) {  in rack_cc_after_idle()
5853 		tp->snd_cwnd = i_cwnd;  in rack_cc_after_idle()
5860  *	- There is no delayed ack timer in progress.
5861  *	- Our last ack wasn't a 0-sized window. We never want to delay
5862  *	  the ack that opens up a 0-sized window.
5863  *	- LRO wasn't used for this segment. We make sure by checking that the
5865  *	- Delayed acks are enabled or this is a half-synchronized T/TCP
5869 	(((tp->t_flags & TF_RXWIN0SENT) == 0) && \
5870 	((tp->t_flags & TF_DELACK) == 0) &&	 \
5871 	(tlen <= tp->t_maxseg) &&		 \
5872 	(tp->t_delayed_ack || (tp->t_flags & TF_NEEDSYN)))
5880 	 * Walk the time-order transmitted list looking for an rsm that is  in rack_find_lowest_rsm()
5884 	TAILQ_FOREACH(rsm, &rack->r_ctl.rc_tmap, r_tnext) {  in rack_find_lowest_rsm()
5885 		if (rsm->r_flags & RACK_ACKED) {  in rack_find_lowest_rsm()
5906 	TQHASH_FOREACH_REVERSE_FROM(prsm, rack->r_ctl.tqh) {  in rack_find_high_nonack()
5907 		if (prsm->r_flags & (RACK_ACKED | RACK_HAS_FIN)) {  in rack_find_high_nonack()
5926 	 * If reorder-fade is configured, then we track the last time we saw  in rack_calc_thresh_rack()
5927 	 * re-ordering occur. If we reach the point where enough time as  in rack_calc_thresh_rack()
5930 	 * Or if reorder-face is 0, then once we see reordering we consider  in rack_calc_thresh_rack()
5934 	 * In the end if lro is non-zero we add the extra time for  in rack_calc_thresh_rack()
5939 	if (rack->r_ctl.rc_reorder_ts) {  in rack_calc_thresh_rack()
5940 		if (rack->r_ctl.rc_reorder_fade) {  in rack_calc_thresh_rack()
5941 			if (SEQ_GEQ(cts, rack->r_ctl.rc_reorder_ts)) {  in rack_calc_thresh_rack()
5942 				lro = cts - rack->r_ctl.rc_reorder_ts;  in rack_calc_thresh_rack()
5954 			if (lro > rack->r_ctl.rc_reorder_fade) {  in rack_calc_thresh_rack()
5956 				rack->r_ctl.rc_reorder_ts = 0;  in rack_calc_thresh_rack()
5966 	if (rack->rc_rack_tmr_std_based == 0) {  in rack_calc_thresh_rack()
5967 		thresh = srtt + rack->r_ctl.rc_pkt_delay;  in rack_calc_thresh_rack()
5969 		/* Standards based pkt-delay is 1/4 srtt */  in rack_calc_thresh_rack()
5972 	if (lro && (rack->rc_rack_tmr_std_based == 0)) {  in rack_calc_thresh_rack()
5974 		if (rack->r_ctl.rc_reorder_shift)  in rack_calc_thresh_rack()
5975 			thresh += (srtt >> rack->r_ctl.rc_reorder_shift);  in rack_calc_thresh_rack()
5979 	if (rack->rc_rack_use_dsack &&  in rack_calc_thresh_rack()
5981 	    (rack->r_ctl.num_dsack > 0)) {  in rack_calc_thresh_rack()
5986 		thresh += rack->r_ctl.num_dsack * (srtt >> 2);  in rack_calc_thresh_rack()
6013 	if (rack->r_ctl.rc_tlp_threshold)  in rack_calc_thresh_tlp()
6014 		thresh = srtt + (srtt / rack->r_ctl.rc_tlp_threshold);  in rack_calc_thresh_tlp()
6019 	segsiz = min(ctf_fixed_maxseg(tp), rack->r_ctl.rc_pace_min_segs);  in rack_calc_thresh_tlp()
6020 	len = rsm->r_end - rsm->r_start;  in rack_calc_thresh_tlp()
6021 	if (rack->rack_tlp_threshold_use == TLP_USE_ID) {  in rack_calc_thresh_tlp()
6023 		if (((tp->snd_max - tp->snd_una) - rack->r_ctl.rc_sacked + rack->r_ctl.rc_holes_rxt) <= segsiz) {  in rack_calc_thresh_tlp()
6026 			 * Compensate for delayed-ack with the d-ack time.  in rack_calc_thresh_tlp()
6032 	} else if (rack->rack_tlp_threshold_use == TLP_USE_TWO_ONE) {  in rack_calc_thresh_tlp()
6038 			 * possible inter-packet delay (if any).  in rack_calc_thresh_tlp()
6043 			idx = rsm->r_rtr_cnt - 1;  in rack_calc_thresh_tlp()
6044 			nidx = prsm->r_rtr_cnt - 1;  in rack_calc_thresh_tlp()
6045 			if (rsm->r_tim_lastsent[nidx] >= prsm->r_tim_lastsent[idx]) {  in rack_calc_thresh_tlp()
6047 				inter_gap = rsm->r_tim_lastsent[idx] - prsm->r_tim_lastsent[nidx];  in rack_calc_thresh_tlp()
6052 			 * Possibly compensate for delayed-ack.  in rack_calc_thresh_tlp()
6060 	} else if (rack->rack_tlp_threshold_use == TLP_USE_TWO_TWO) {  in rack_calc_thresh_tlp()
6065 			 * Compensate for delayed-ack with the d-ack time.  in rack_calc_thresh_tlp()
6073 	if (thresh > tp->t_rxtcur) {  in rack_calc_thresh_tlp()
6074 		thresh = tp->t_rxtcur;  in rack_calc_thresh_tlp()
6098 	if (rack->rc_rack_rtt)  in rack_grab_rtt()
6099 		return (rack->rc_rack_rtt);  in rack_grab_rtt()
6100 	else if (tp->t_srtt == 0)  in rack_grab_rtt()
6102 	return (tp->t_srtt);  in rack_grab_rtt()
6118 	rack = (struct tcp_rack *)tp->t_fb_ptr;  in rack_check_recovery_mode()
6119 	if (tqhash_empty(rack->r_ctl.tqh)) {  in rack_check_recovery_mode()
6122 	rsm = TAILQ_FIRST(&rack->r_ctl.rc_tmap);  in rack_check_recovery_mode()
6127 	if (rsm->r_flags & RACK_ACKED) {  in rack_check_recovery_mode()
6132 	idx = rsm->r_rtr_cnt - 1;  in rack_check_recovery_mode()
6135 	if (TSTMP_LT(tsused, ((uint32_t)rsm->r_tim_lastsent[idx]))) {  in rack_check_recovery_mode()
6138 	if ((tsused - ((uint32_t)rsm->r_tim_lastsent[idx])) < thresh) {  in rack_check_recovery_mode()
6141 	/* Ok if we reach here we are over-due and this guy can be sent */  in rack_check_recovery_mode()
6142 	rack_cong_signal(tp, CC_NDUPACK, tp->snd_una, __LINE__);  in rack_check_recovery_mode()
6153 	t = (tp->t_srtt + (tp->t_rttvar << 2));  in rack_get_persists_timer_val()
6154 	RACK_TCPT_RANGESET(tt, t * tcp_backoff[tp->t_rxtshift],  in rack_get_persists_timer_val()
6155  	    rack_persist_min, rack_persist_max, rack->r_ctl.timer_slop);  in rack_get_persists_timer_val()
6156 	rack->r_ctl.rc_hpts_flags |= PACE_TMR_PERSIT;  in rack_get_persists_timer_val()
6176 	if (rack->t_timers_stopped) {  in rack_timer_start()
6180 	if (rack->rc_in_persist) {  in rack_timer_start()
6184 	rack->rc_on_min_to = 0;  in rack_timer_start()
6185 	if ((tp->t_state < TCPS_ESTABLISHED) ||  in rack_timer_start()
6186 	    ((tp->t_flags & TF_SACK_PERMIT) == 0)) {  in rack_timer_start()
6189 	rsm = TAILQ_FIRST(&rack->r_ctl.rc_tmap);  in rack_timer_start()
6194 		rsm = TAILQ_FIRST(&rack->r_ctl.rc_tmap);  in rack_timer_start()
6200 			 * If a timer (Rack/TLP or RXT) has gone off more  in rack_timer_start()
6201 			 * recently thats the discount we want to use (now - timer time).  in rack_timer_start()
6203 			 * we want to use that (now - oldest-packet-last_transmit_time).  in rack_timer_start()
6206 			idx = rsm->r_rtr_cnt - 1;  in rack_timer_start()
6207 			if (TSTMP_GEQ(rack->r_ctl.rc_tlp_rxt_last_time, ((uint32_t)rsm->r_tim_lastsent[idx])))  in rack_timer_start()
6208 				tstmp_touse = (uint32_t)rack->r_ctl.rc_tlp_rxt_last_time;  in rack_timer_start()
6210 				tstmp_touse = (uint32_t)rsm->r_tim_lastsent[idx];  in rack_timer_start()
6212 			    time_since_sent = cts - tstmp_touse;  in rack_timer_start()
6214 		if (SEQ_LT(tp->snd_una, tp->snd_max) ||  in rack_timer_start()
6215 		    sbavail(&tptosocket(tp)->so_snd)) {  in rack_timer_start()
6216 			rack->r_ctl.rc_hpts_flags |= PACE_TMR_RXT;  in rack_timer_start()
6217 			to = tp->t_rxtcur;  in rack_timer_start()
6219 				to -= time_since_sent;  in rack_timer_start()
6221 				to = rack->r_ctl.rc_min_to;  in rack_timer_start()
6225 			if ((TCPS_HAVEESTABLISHED(tp->t_state) == 0) &&  in rack_timer_start()
6230 				 * of the keep-init timeout.  in rack_timer_start()
6235 				if (TSTMP_GT(cts, (uint32_t)rsm->r_tim_lastsent[0])) {  in rack_timer_start()
6236 					red = (cts - (uint32_t)rsm->r_tim_lastsent[0]);  in rack_timer_start()
6238 						max_time -= red;  in rack_timer_start()
6250 	if (rsm->r_flags & RACK_ACKED) {  in rack_timer_start()
6258 	if ((rsm->r_flags & RACK_SACK_PASSED) ||  in rack_timer_start()
6259 	    (rsm->r_flags & RACK_RWND_COLLAPSED) ||  in rack_timer_start()
6260 	    (rsm->r_dupack >= DUP_ACK_THRESHOLD)) {  in rack_timer_start()
6261 		if ((tp->t_flags & TF_SENTFIN) &&  in rack_timer_start()
6262 		    ((tp->snd_max - tp->snd_una) == 1) &&  in rack_timer_start()
6263 		    (rsm->r_flags & RACK_HAS_FIN)) {  in rack_timer_start()
6270 		if ((rack->use_rack_rr == 0) &&  in rack_timer_start()
6271 		    (IN_FASTRECOVERY(tp->t_flags)) &&  in rack_timer_start()
6272 		    (rack->rack_no_prr == 0) &&  in rack_timer_start()
6273 		     (rack->r_ctl.rc_prr_sndcnt  < ctf_fixed_maxseg(tp))) {  in rack_timer_start()
6280 			 * get to use the rack-cheat.  in rack_timer_start()
6286 		idx = rsm->r_rtr_cnt - 1;  in rack_timer_start()
6287 		exp = ((uint32_t)rsm->r_tim_lastsent[idx]) + thresh;  in rack_timer_start()
6289 			to = exp - cts;  in rack_timer_start()
6290 			if (to < rack->r_ctl.rc_min_to) {  in rack_timer_start()
6291 				to = rack->r_ctl.rc_min_to;  in rack_timer_start()
6292 				if (rack->r_rr_config == 3)  in rack_timer_start()
6293 					rack->rc_on_min_to = 1;  in rack_timer_start()
6296 			to = rack->r_ctl.rc_min_to;  in rack_timer_start()
6297 			if (rack->r_rr_config == 3)  in rack_timer_start()
6298 				rack->rc_on_min_to = 1;  in rack_timer_start()
6303 		if ((rack->rc_tlp_in_progress != 0) &&  in rack_timer_start()
6304 		    (rack->r_ctl.rc_tlp_cnt_out >= rack_tlp_limit)) {  in rack_timer_start()
6311 		rsm = TAILQ_LAST_FAST(&rack->r_ctl.rc_tmap, rack_sendmap, r_tnext);  in rack_timer_start()
6316 		if (rsm->r_flags & RACK_HAS_FIN) {  in rack_timer_start()
6321 		idx = rsm->r_rtr_cnt - 1;  in rack_timer_start()
6323 		if (TSTMP_GEQ(((uint32_t)rsm->r_tim_lastsent[idx]), rack->r_ctl.rc_tlp_rxt_last_time))  in rack_timer_start()
6324 			tstmp_touse = (uint32_t)rsm->r_tim_lastsent[idx];  in rack_timer_start()
6326 			tstmp_touse = (uint32_t)rack->r_ctl.rc_tlp_rxt_last_time;  in rack_timer_start()
6328 		    time_since_sent = cts - tstmp_touse;  in rack_timer_start()
6330 		if (tp->t_srtt) {  in rack_timer_start()
6331 			if ((rack->rc_srtt_measure_made == 0) &&  in rack_timer_start()
6332 			    (tp->t_srtt == 1)) {  in rack_timer_start()
6339 				srtt_cur = tp->t_srtt;  in rack_timer_start()
6350 		    tp->t_srtt &&  in rack_timer_start()
6356 			to = thresh - time_since_sent;  in rack_timer_start()
6358 			to = rack->r_ctl.rc_min_to;  in rack_timer_start()
6363 						  rack->r_ctl.rc_tlp_rxt_last_time, /* flex4 */  in rack_timer_start()
6364 						  (uint32_t)rsm->r_tim_lastsent[idx],  in rack_timer_start()
6380 		rack->r_ctl.rc_hpts_flags |= PACE_TMR_RACK;  in rack_timer_start()
6382 		rack->r_ctl.rc_hpts_flags |= PACE_TMR_TLP;  in rack_timer_start()
6392 	if (rack->rc_in_persist == 0) {  in rack_enter_persist()
6393 		if (tp->t_flags & TF_GPUTINPROG) {  in rack_enter_persist()
6398 			rack_do_goodput_measurement(tp, rack, tp->snd_una, __LINE__,  in rack_enter_persist()
6402 		if (rack->r_ctl.rc_scw) {  in rack_enter_persist()
6403 			tcp_shared_cwnd_idle(rack->r_ctl.rc_scw, rack->r_ctl.rc_scw_index);  in rack_enter_persist()
6404 			rack->rack_scwnd_is_idle = 1;  in rack_enter_persist()
6407 		rack->r_ctl.rc_went_idle_time = cts;  in rack_enter_persist()
6408 		if (rack->r_ctl.rc_went_idle_time == 0)  in rack_enter_persist()
6409 			rack->r_ctl.rc_went_idle_time = 1;  in rack_enter_persist()
6410 		if (rack->lt_bw_up) {  in rack_enter_persist()
6414 			rack->r_ctl.lt_bw_bytes += (snd_una - rack->r_ctl.lt_seq);  in rack_enter_persist()
6415 			rack->r_ctl.lt_seq = snd_una;  in rack_enter_persist()
6416 			tmark = tcp_tv_to_lusectick(&rack->r_ctl.act_rcv_time);  in rack_enter_persist()
6417 			if (tmark >= rack->r_ctl.lt_timemark) {  in rack_enter_persist()
6418 				rack->r_ctl.lt_bw_time += (tmark - rack->r_ctl.lt_timemark);  in rack_enter_persist()
6420 			rack->r_ctl.lt_timemark = tmark;  in rack_enter_persist()
6421 			rack->lt_bw_up = 0;  in rack_enter_persist()
6422 			rack->r_persist_lt_bw_off = 1;  in rack_enter_persist()
6425 		rack->r_ctl.persist_lost_ends = 0;  in rack_enter_persist()
6426 		rack->probe_not_answered = 0;  in rack_enter_persist()
6427 		rack->forced_ack = 0;  in rack_enter_persist()
6428 		tp->t_rxtshift = 0;  in rack_enter_persist()
6429 		RACK_TCPT_RANGESET(tp->t_rxtcur, RACK_REXMTVAL(tp),  in rack_enter_persist()
6430 			      rack_rto_min, rack_rto_max, rack->r_ctl.timer_slop);  in rack_enter_persist()
6431 		rack->rc_in_persist = 1;  in rack_enter_persist()
6438 	if (tcp_in_hpts(rack->rc_tp)) {  in rack_exit_persist()
6439 		tcp_hpts_remove(rack->rc_tp);  in rack_exit_persist()
6440 		rack->r_ctl.rc_hpts_flags = 0;  in rack_exit_persist()
6443 	if (rack->r_ctl.rc_scw) {  in rack_exit_persist()
6444 		tcp_shared_cwnd_active(rack->r_ctl.rc_scw, rack->r_ctl.rc_scw_index);  in rack_exit_persist()
6445 		rack->rack_scwnd_is_idle = 0;  in rack_exit_persist()
6448 	if (rack->rc_gp_dyn_mul &&  in rack_exit_persist()
6449 	    (rack->use_fixed_rate == 0) &&  in rack_exit_persist()
6450 	    (rack->rc_always_pace)) {  in rack_exit_persist()
6452 		 * Do we count this as if a probe-rtt just  in rack_exit_persist()
6457 		time_idle = cts - rack->r_ctl.rc_went_idle_time;  in rack_exit_persist()
6461 			extra = (uint64_t)rack->r_ctl.rc_gp_srtt *  in rack_exit_persist()
6467 			/* Yes, we count it as a probe-rtt. */  in rack_exit_persist()
6471 			if (rack->in_probe_rtt == 0) {  in rack_exit_persist()
6472 				rack->r_ctl.rc_lower_rtt_us_cts = us_cts;  in rack_exit_persist()
6473 				rack->r_ctl.rc_time_probertt_entered = rack->r_ctl.rc_lower_rtt_us_cts;  in rack_exit_persist()
6474 				rack->r_ctl.rc_time_probertt_starts = rack->r_ctl.rc_lower_rtt_us_cts;  in rack_exit_persist()
6475 				rack->r_ctl.rc_time_of_last_probertt = rack->r_ctl.rc_lower_rtt_us_cts;  in rack_exit_persist()
6481 	if (rack->r_persist_lt_bw_off) {  in rack_exit_persist()
6483 		rack->r_ctl.lt_timemark = tcp_get_u64_usecs(NULL);  in rack_exit_persist()
6484 		rack->lt_bw_up = 1;  in rack_exit_persist()
6485 		rack->r_persist_lt_bw_off = 0;  in rack_exit_persist()
6487 	rack->rc_in_persist = 0;  in rack_exit_persist()
6488 	rack->r_ctl.rc_went_idle_time = 0;  in rack_exit_persist()
6489 	tp->t_rxtshift = 0;  in rack_exit_persist()
6490 	RACK_TCPT_RANGESET(tp->t_rxtcur, RACK_REXMTVAL(tp),  in rack_exit_persist()
6491 	   rack_rto_min, rack_rto_max, rack->r_ctl.timer_slop);  in rack_exit_persist()
6492 	rack->r_ctl.rc_agg_delayed = 0;  in rack_exit_persist()
6493 	rack->r_early = 0;  in rack_exit_persist()
6494 	rack->r_late = 0;  in rack_exit_persist()
6495 	rack->r_ctl.rc_agg_early = 0;  in rack_exit_persist()
6502 	if (rack_verbose_logging && tcp_bblogging_on(rack->rc_tp)) {  in rack_log_hpts_diag()
6506 		log.u_bbr.flex1 = diag->p_nxt_slot;  in rack_log_hpts_diag()
6507 		log.u_bbr.flex2 = diag->p_cur_slot;  in rack_log_hpts_diag()
6508 		log.u_bbr.flex3 = diag->slot_req;  in rack_log_hpts_diag()
6509 		log.u_bbr.flex4 = diag->inp_hptsslot;  in rack_log_hpts_diag()
6510 		log.u_bbr.flex5 = diag->slot_remaining;  in rack_log_hpts_diag()
6511 		log.u_bbr.flex6 = diag->need_new_to;  in rack_log_hpts_diag()
6512 		log.u_bbr.flex7 = diag->p_hpts_active;  in rack_log_hpts_diag()
6513 		log.u_bbr.flex8 = diag->p_on_min_sleep;  in rack_log_hpts_diag()
6515 		log.u_bbr.epoch = diag->have_slept;  in rack_log_hpts_diag()
6516 		log.u_bbr.lt_epoch = diag->yet_to_sleep;  in rack_log_hpts_diag()
6517 		log.u_bbr.pkts_out = diag->co_ret;  in rack_log_hpts_diag()
6518 		log.u_bbr.applimited = diag->hpts_sleep_time;  in rack_log_hpts_diag()
6519 		log.u_bbr.delivered = diag->p_prev_slot;  in rack_log_hpts_diag()
6520 		log.u_bbr.inflight = diag->p_runningslot;  in rack_log_hpts_diag()
6521 		log.u_bbr.bw_inuse = diag->wheel_slot;  in rack_log_hpts_diag()
6522 		log.u_bbr.rttProp = diag->wheel_cts;  in rack_log_hpts_diag()
6524 		log.u_bbr.delRate = diag->maxslots;  in rack_log_hpts_diag()
6525 		log.u_bbr.cur_del_rate = diag->p_curtick;  in rack_log_hpts_diag()
6527 		log.u_bbr.cur_del_rate |= diag->p_lasttick;  in rack_log_hpts_diag()
6528 		TCP_LOG_EVENTP(rack->rc_tp, NULL,  in rack_log_hpts_diag()
6529 		    &rack->rc_inp->inp_socket->so_rcv,  in rack_log_hpts_diag()
6530 		    &rack->rc_inp->inp_socket->so_snd,  in rack_log_hpts_diag()
6540 	if (rack_verbose_logging && tcp_bblogging_on(rack->rc_tp)) {  in rack_log_wakeup()
6545 		log.u_bbr.flex1 = sb->sb_flags;  in rack_log_wakeup()
6547 		log.u_bbr.flex3 = sb->sb_state;  in rack_log_wakeup()
6550 		TCP_LOG_EVENTP(rack->rc_tp, NULL,  in rack_log_wakeup()
6551 		    &rack->rc_inp->inp_socket->so_rcv,  in rack_log_wakeup()
6552 		    &rack->rc_inp->inp_socket->so_snd,  in rack_log_wakeup()
6572 	if ((tp->t_state == TCPS_CLOSED) ||  in rack_start_hpts_timer()
6573 	    (tp->t_state == TCPS_LISTEN)) {  in rack_start_hpts_timer()
6580 	stopped = rack->rc_tmr_stopped;  in rack_start_hpts_timer()
6581 	if (stopped && TSTMP_GT(rack->r_ctl.rc_timer_exp, cts)) {  in rack_start_hpts_timer()
6582 		left = rack->r_ctl.rc_timer_exp - cts;  in rack_start_hpts_timer()
6584 	rack->r_ctl.rc_timer_exp = 0;  in rack_start_hpts_timer()
6585 	rack->r_ctl.rc_hpts_flags = 0;  in rack_start_hpts_timer()
6589 	if (rack->r_early && (rack->rc_ack_can_sendout_data == 0)) {  in rack_start_hpts_timer()
6597 		 * by an ack aka the rc_agg_early (non-paced mode).  in rack_start_hpts_timer()
6599 		slot += rack->r_ctl.rc_agg_early;  in rack_start_hpts_timer()
6600 		rack->r_early = 0;  in rack_start_hpts_timer()
6601 		rack->r_ctl.rc_agg_early = 0;  in rack_start_hpts_timer()
6603 	if ((rack->r_late) &&  in rack_start_hpts_timer()
6604 	    ((rack->r_use_hpts_min == 0) || (rack->dgp_on == 0))) {  in rack_start_hpts_timer()
6611 		if (rack->r_ctl.rc_agg_delayed >= slot) {  in rack_start_hpts_timer()
6620 				rack->r_ctl.rc_agg_delayed += (HPTS_TICKS_PER_SLOT - slot);  in rack_start_hpts_timer()
6624 				rack->r_ctl.rc_agg_delayed -= (slot - HPTS_TICKS_PER_SLOT);  in rack_start_hpts_timer()
6628 			slot -= rack->r_ctl.rc_agg_delayed;  in rack_start_hpts_timer()
6629 			rack->r_ctl.rc_agg_delayed = 0;  in rack_start_hpts_timer()
6632 				rack->r_ctl.rc_agg_delayed = HPTS_TICKS_PER_SLOT - slot;  in rack_start_hpts_timer()
6635 			if (rack->r_ctl.rc_agg_delayed == 0)  in rack_start_hpts_timer()
6636 				rack->r_late = 0;  in rack_start_hpts_timer()
6638 	} else if (rack->r_late) {  in rack_start_hpts_timer()
6642 		max_red = (slot * rack->r_ctl.max_reduction) / 100;  in rack_start_hpts_timer()
6643 		if (max_red >= rack->r_ctl.rc_agg_delayed) {  in rack_start_hpts_timer()
6644 			slot -= rack->r_ctl.rc_agg_delayed;  in rack_start_hpts_timer()
6645 			rack->r_ctl.rc_agg_delayed = 0;  in rack_start_hpts_timer()
6647 			slot -= max_red;  in rack_start_hpts_timer()
6648 			rack->r_ctl.rc_agg_delayed -= max_red;  in rack_start_hpts_timer()
6651 	if ((rack->r_use_hpts_min == 1) &&  in rack_start_hpts_timer()
6653 	    (rack->dgp_on == 1)) {  in rack_start_hpts_timer()
6666 	if (tp->t_flags & TF_DELACK) {  in rack_start_hpts_timer()
6668 		rack->r_ctl.rc_hpts_flags |= PACE_TMR_DELACK;  in rack_start_hpts_timer()
6674 		rack->r_ctl.rc_hpts_flags &= ~PACE_TMR_DELACK;  in rack_start_hpts_timer()
6677 	 * wheel, we resort to a keep-alive timer if its configured.  in rack_start_hpts_timer()
6681 		if ((V_tcp_always_keepalive || inp->inp_socket->so_options & SO_KEEPALIVE) &&  in rack_start_hpts_timer()
6682 		    (tp->t_state <= TCPS_CLOSING)) {  in rack_start_hpts_timer()
6685 			 * del-ack), we don't have segments being paced. So  in rack_start_hpts_timer()
6688 			if (TCPS_HAVEESTABLISHED(tp->t_state)) {  in rack_start_hpts_timer()
6689 				/* Get the established keep-alive time */  in rack_start_hpts_timer()
6693 				 * Get the initial setup keep-alive time,  in rack_start_hpts_timer()
6701 			rack->r_ctl.rc_hpts_flags |= PACE_TMR_KEEP;  in rack_start_hpts_timer()
6702 			if (rack->in_probe_rtt) {  in rack_start_hpts_timer()
6706 				 * exit probe-rtt and initiate a keep-alive ack.  in rack_start_hpts_timer()
6707 				 * This will get us out of probe-rtt and update  in rack_start_hpts_timer()
6708 				 * our min-rtt.  in rack_start_hpts_timer()
6715 	    (rack->r_ctl.rc_hpts_flags & PACE_TMR_MASK)) {  in rack_start_hpts_timer()
6721 		 * keep-alive, delayed_ack we keep track of what was left  in rack_start_hpts_timer()
6729 		 * Hack alert for now we can't time-out over 2,147,483  in rack_start_hpts_timer()
6735 		rack->r_ctl.rc_timer_exp = cts + hpts_timeout;  in rack_start_hpts_timer()
6738 	if ((rack->gp_ready == 0) &&  in rack_start_hpts_timer()
6739 	    (rack->use_fixed_rate == 0) &&  in rack_start_hpts_timer()
6741 	    (rack->r_ctl.rc_hpts_flags & (PACE_TMR_TLP|PACE_TMR_RXT))) {  in rack_start_hpts_timer()
6761 	 * TF2_MBUF_QUEUE_READY - This flags says that I am busy  in rack_start_hpts_timer()
6766 	 * TF2_DONT_SACK_QUEUE - This flag is used in conjunction  in rack_start_hpts_timer()
6781 	tp->t_flags2 &= ~(TF2_DONT_SACK_QUEUE|TF2_MBUF_QUEUE_READY);  in rack_start_hpts_timer()
6783 		rack->r_ctl.rc_hpts_flags |= PACE_PKT_OUTPUT;  in rack_start_hpts_timer()
6784 		rack->r_ctl.rc_last_output_to = us_cts + slot;  in rack_start_hpts_timer()
6793 		tp->t_flags2 |= TF2_MBUF_QUEUE_READY;  in rack_start_hpts_timer()
6799 		if ((rack->r_ctl.rc_hpts_flags & PACE_TMR_RACK) ||  in rack_start_hpts_timer()
6800 		    (IN_RECOVERY(tp->t_flags))) {  in rack_start_hpts_timer()
6801 			if (rack->r_rr_config != 3)  in rack_start_hpts_timer()
6802 				tp->t_flags2 |= TF2_DONT_SACK_QUEUE;  in rack_start_hpts_timer()
6803 			else if (rack->rc_pace_dnd) {  in rack_start_hpts_timer()
6812 				tp->t_flags2 |= TF2_DONT_SACK_QUEUE;  in rack_start_hpts_timer()
6815 		if (rack->rc_ack_can_sendout_data) {  in rack_start_hpts_timer()
6819 			 * backout the changes (used for non-paced  in rack_start_hpts_timer()
6822 			tp->t_flags2 &= ~(TF2_DONT_SACK_QUEUE |  in rack_start_hpts_timer()
6825 		if ((rack->use_rack_rr) &&  in rack_start_hpts_timer()
6826 		    (rack->r_rr_config < 2) &&  in rack_start_hpts_timer()
6830 			 * t-o if the t-o does not cause a send.  in rack_start_hpts_timer()
6851 		rack->r_ctl.rc_hpts_flags &= ~PACE_PKT_OUTPUT;  in rack_start_hpts_timer()
6859 		if (SEQ_GT(tp->snd_max, tp->snd_una)) {  in rack_start_hpts_timer()
6860 			panic("tp:%p rack:%p tlts:%d cts:%u slot:%u pto:%u -- no timer started?",  in rack_start_hpts_timer()
6865 	rack->rc_tmr_stopped = 0;  in rack_start_hpts_timer()
6879 	TAILQ_FOREACH_FROM(nrsm, &rack->r_ctl.rc_tmap, r_tnext) {  in rack_mark_lost()
6880 		if ((nrsm->r_flags & RACK_SACK_PASSED) == 0) {  in rack_mark_lost()
6881 			/* Got up to all that were marked sack-passed */  in rack_mark_lost()
6884 		if ((nrsm->r_flags & RACK_WAS_LOST) == 0) {  in rack_mark_lost()
6885 			exp = ((uint32_t)rsm->r_tim_lastsent[(rsm->r_rtr_cnt - 1)]) + thresh;  in rack_mark_lost()
6888 				nrsm->r_flags |= RACK_WAS_LOST;  in rack_mark_lost()
6889 				rack->r_ctl.rc_considered_lost += nrsm->r_end - nrsm->r_start;  in rack_mark_lost()
6911 	 * retransmissions, if so we will enter fast-recovery. The output  in rack_timeout_rack()
6918 	if (rack->r_state && (rack->r_state != tp->t_state))  in rack_timeout_rack()
6920 	rack->rc_on_min_to = 0;  in rack_timeout_rack()
6926 		rack->r_ctl.rc_resend = rsm;  in rack_timeout_rack()
6927 		rack->r_timer_override = 1;  in rack_timeout_rack()
6928 		if (rack->use_rack_rr) {  in rack_timeout_rack()
6932 			 * over-ride pacing i.e. rrr takes precedence  in rack_timeout_rack()
6937 			rack->r_ctl.rc_hpts_flags &= ~PACE_PKT_OUTPUT;  in rack_timeout_rack()
6940 	rack->r_ctl.rc_hpts_flags &= ~PACE_TMR_RACK;  in rack_timeout_rack()
6956 	if ((M_TRAILINGROOM(rsm->m) != rsm->orig_t_space)) {  in rack_adjust_orig_mlen()
6963 		KASSERT((rsm->orig_t_space > M_TRAILINGROOM(rsm->m)),  in rack_adjust_orig_mlen()
6965 			 rsm->m,  in rack_adjust_orig_mlen()
6967 			 (intmax_t)M_TRAILINGROOM(rsm->m),  in rack_adjust_orig_mlen()
6968 			 rsm->orig_t_space,  in rack_adjust_orig_mlen()
6969 			 rsm->orig_m_len,  in rack_adjust_orig_mlen()
6970 			 rsm->m->m_len));  in rack_adjust_orig_mlen()
6971 		rsm->orig_m_len += (rsm->orig_t_space - M_TRAILINGROOM(rsm->m));  in rack_adjust_orig_mlen()
6972 		rsm->orig_t_space = M_TRAILINGROOM(rsm->m);  in rack_adjust_orig_mlen()
6974 	if (rsm->m->m_len < rsm->orig_m_len) {  in rack_adjust_orig_mlen()
6979 		KASSERT((rsm->soff >= (rsm->orig_m_len - rsm->m->m_len)),  in rack_adjust_orig_mlen()
6981 			 rsm->m, rsm->m->m_len,  in rack_adjust_orig_mlen()
6982 			 rsm, rsm->orig_m_len,  in rack_adjust_orig_mlen()
6983 			 rsm->soff));  in rack_adjust_orig_mlen()
6984 		if (rsm->soff >= (rsm->orig_m_len - rsm->m->m_len))  in rack_adjust_orig_mlen()
6985 			rsm->soff -= (rsm->orig_m_len - rsm->m->m_len);  in rack_adjust_orig_mlen()
6987 			rsm->soff = 0;  in rack_adjust_orig_mlen()
6988 		rsm->orig_m_len = rsm->m->m_len;  in rack_adjust_orig_mlen()
6990 	} else if (rsm->m->m_len > rsm->orig_m_len) {  in rack_adjust_orig_mlen()
6992 		      rsm, rsm->m);  in rack_adjust_orig_mlen()
7003 	if (src_rsm->m &&  in rack_setup_offset_for_rsm()
7004 	    ((src_rsm->orig_m_len != src_rsm->m->m_len) ||  in rack_setup_offset_for_rsm()
7005 	     (M_TRAILINGROOM(src_rsm->m) != src_rsm->orig_t_space))) {  in rack_setup_offset_for_rsm()
7009 	m = src_rsm->m;  in rack_setup_offset_for_rsm()
7010 	soff = src_rsm->soff + (src_rsm->r_end - src_rsm->r_start);  in rack_setup_offset_for_rsm()
7011 	while (soff >= m->m_len) {  in rack_setup_offset_for_rsm()
7013 		soff -= m->m_len;  in rack_setup_offset_for_rsm()
7014 		m = m->m_next;  in rack_setup_offset_for_rsm()
7020 			src_rsm->m = sbsndmbuf(&rack->rc_inp->inp_socket->so_snd,  in rack_setup_offset_for_rsm()
7021 					       (src_rsm->r_start - rack->rc_tp->snd_una),  in rack_setup_offset_for_rsm()
7022 					       &src_rsm->soff);  in rack_setup_offset_for_rsm()
7023 			src_rsm->orig_m_len = src_rsm->m->m_len;  in rack_setup_offset_for_rsm()
7024 			src_rsm->orig_t_space = M_TRAILINGROOM(src_rsm->m);  in rack_setup_offset_for_rsm()
7025 			rsm->m = sbsndmbuf(&rack->rc_inp->inp_socket->so_snd,  in rack_setup_offset_for_rsm()
7026 					   (rsm->r_start - rack->rc_tp->snd_una),  in rack_setup_offset_for_rsm()
7027 					   &rsm->soff);  in rack_setup_offset_for_rsm()
7028 			rsm->orig_m_len = rsm->m->m_len;  in rack_setup_offset_for_rsm()
7029 			rsm->orig_t_space = M_TRAILINGROOM(rsm->m);  in rack_setup_offset_for_rsm()
7033 	rsm->m = m;  in rack_setup_offset_for_rsm()
7034 	rsm->soff = soff;  in rack_setup_offset_for_rsm()
7035 	rsm->orig_m_len = m->m_len;  in rack_setup_offset_for_rsm()
7036 	rsm->orig_t_space = M_TRAILINGROOM(rsm->m);  in rack_setup_offset_for_rsm()
7045 	nrsm->r_start = start;  in rack_clone_rsm()
7046 	nrsm->r_end = rsm->r_end;  in rack_clone_rsm()
7047 	nrsm->r_rtr_cnt = rsm->r_rtr_cnt;  in rack_clone_rsm()
7048 	nrsm->r_act_rxt_cnt = rsm->r_act_rxt_cnt;  in rack_clone_rsm()
7049 	nrsm->r_flags = rsm->r_flags;  in rack_clone_rsm()
7050 	nrsm->r_dupack = rsm->r_dupack;  in rack_clone_rsm()
7051 	nrsm->r_no_rtt_allowed = rsm->r_no_rtt_allowed;  in rack_clone_rsm()
7052 	nrsm->r_rtr_bytes = 0;  in rack_clone_rsm()
7053 	nrsm->r_fas = rsm->r_fas;  in rack_clone_rsm()
7054 	nrsm->r_bas = rsm->r_bas;  in rack_clone_rsm()
7055 	tqhash_update_end(rack->r_ctl.tqh, rsm, nrsm->r_start);  in rack_clone_rsm()
7056 	nrsm->r_just_ret = rsm->r_just_ret;  in rack_clone_rsm()
7057 	for (idx = 0; idx < nrsm->r_rtr_cnt; idx++) {  in rack_clone_rsm()
7058 		nrsm->r_tim_lastsent[idx] = rsm->r_tim_lastsent[idx];  in rack_clone_rsm()
7061 	if (nrsm->r_flags & RACK_HAS_SYN)  in rack_clone_rsm()
7062 		nrsm->r_flags &= ~RACK_HAS_SYN;  in rack_clone_rsm()
7064 	if (rsm->r_flags & RACK_HAS_FIN)  in rack_clone_rsm()
7065 		rsm->r_flags &= ~RACK_HAS_FIN;  in rack_clone_rsm()
7067 	if (rsm->r_flags & RACK_HAD_PUSH)  in rack_clone_rsm()
7068 		rsm->r_flags &= ~RACK_HAD_PUSH;  in rack_clone_rsm()
7070 	nrsm->r_hw_tls = rsm->r_hw_tls;  in rack_clone_rsm()
7078 	KASSERT(((rsm->m != NULL) ||  in rack_clone_rsm()
7079 		 (rsm->r_flags & (RACK_HAS_SYN|RACK_HAS_FIN))),  in rack_clone_rsm()
7080 		("rsm:%p nrsm:%p rack:%p -- rsm->m is NULL?", rsm, nrsm, rack));  in rack_clone_rsm()
7081 	if (rsm->m)  in rack_clone_rsm()
7100 	rack_log_map_chg(rack->rc_tp, rack, NULL,  in rack_merge_rsm()
7101 			 l_rsm, r_rsm, MAP_MERGE, r_rsm->r_end, __LINE__);  in rack_merge_rsm()
7102 	tqhash_update_end(rack->r_ctl.tqh, l_rsm, r_rsm->r_end);  in rack_merge_rsm()
7103 	if (l_rsm->r_dupack < r_rsm->r_dupack)  in rack_merge_rsm()
7104 		l_rsm->r_dupack = r_rsm->r_dupack;  in rack_merge_rsm()
7105 	if (r_rsm->r_rtr_bytes)  in rack_merge_rsm()
7106 		l_rsm->r_rtr_bytes += r_rsm->r_rtr_bytes;  in rack_merge_rsm()
7107 	if (r_rsm->r_in_tmap) {  in rack_merge_rsm()
7109 		TAILQ_REMOVE(&rack->r_ctl.rc_tmap, r_rsm, r_tnext);  in rack_merge_rsm()
7110 		r_rsm->r_in_tmap = 0;  in rack_merge_rsm()
7114 	if (r_rsm->r_flags & RACK_HAS_FIN)  in rack_merge_rsm()
7115 		l_rsm->r_flags |= RACK_HAS_FIN;  in rack_merge_rsm()
7116 	if (r_rsm->r_flags & RACK_TLP)  in rack_merge_rsm()
7117 		l_rsm->r_flags |= RACK_TLP;  in rack_merge_rsm()
7118 	if (r_rsm->r_flags & RACK_RWND_COLLAPSED)  in rack_merge_rsm()
7119 		l_rsm->r_flags |= RACK_RWND_COLLAPSED;  in rack_merge_rsm()
7120 	if ((r_rsm->r_flags & RACK_APP_LIMITED)  &&  in rack_merge_rsm()
7121 	    ((l_rsm->r_flags & RACK_APP_LIMITED) == 0)) {  in rack_merge_rsm()
7123 		 * If both are app-limited then let the  in rack_merge_rsm()
7127 		l_rsm->r_flags |= RACK_APP_LIMITED;  in rack_merge_rsm()
7128 		r_rsm->r_flags &= ~RACK_APP_LIMITED;  in rack_merge_rsm()
7129 		if (r_rsm == rack->r_ctl.rc_first_appl)  in rack_merge_rsm()
7130 			rack->r_ctl.rc_first_appl = l_rsm;  in rack_merge_rsm()
7132 	tqhash_remove(rack->r_ctl.tqh, r_rsm, REMOVE_TYPE_MERGE);  in rack_merge_rsm()
7147 	if(l_rsm->r_tim_lastsent[(l_rsm->r_rtr_cnt-1)] <  in rack_merge_rsm()
7148 	   r_rsm->r_tim_lastsent[(r_rsm->r_rtr_cnt-1)]) {  in rack_merge_rsm()
7149 		l_rsm->r_tim_lastsent[(l_rsm->r_rtr_cnt-1)] = r_rsm->r_tim_lastsent[(r_rsm->r_rtr_cnt-1)];  in rack_merge_rsm()
7156 	if(l_rsm->r_ack_arrival	 < r_rsm->r_ack_arrival)  in rack_merge_rsm()
7157 		l_rsm->r_ack_arrival = r_rsm->r_ack_arrival;  in rack_merge_rsm()
7159 	if ((r_rsm->r_limit_type == 0) && (l_rsm->r_limit_type != 0)) {  in rack_merge_rsm()
7161 		r_rsm->r_limit_type = l_rsm->r_limit_type;  in rack_merge_rsm()
7162 		l_rsm->r_limit_type = 0;  in rack_merge_rsm()
7165 	l_rsm->r_flags |= RACK_MERGED;  in rack_merge_rsm()
7190 	if (TSTMP_LT(cts, rack->r_ctl.rc_timer_exp)) {  in rack_timeout_tlp()
7196 		return (-ETIMEDOUT);	/* tcp_drop() */  in rack_timeout_tlp()
7203 	rack->r_ctl.retran_during_recovery = 0;  in rack_timeout_tlp()
7204 	rack->r_might_revert = 0;  in rack_timeout_tlp()
7205 	rack->r_ctl.dsack_byte_cnt = 0;  in rack_timeout_tlp()
7207 	if (rack->r_state && (rack->r_state != tp->t_state))  in rack_timeout_tlp()
7209 	avail = sbavail(&so->so_snd);  in rack_timeout_tlp()
7210 	out = tp->snd_max - tp->snd_una;  in rack_timeout_tlp()
7211 	if ((out > tp->snd_wnd) || rack->rc_has_collapsed) {  in rack_timeout_tlp()
7216 	if (rack->r_ctl.dsack_persist && (rack->r_ctl.rc_tlp_cnt_out >= 1)) {  in rack_timeout_tlp()
7217 		rack->r_ctl.dsack_persist--;  in rack_timeout_tlp()
7218 		if (rack->r_ctl.num_dsack && (rack->r_ctl.dsack_persist == 0)) {  in rack_timeout_tlp()
7219 			rack->r_ctl.num_dsack = 0;  in rack_timeout_tlp()
7223 	if ((tp->t_flags & TF_GPUTINPROG) &&  in rack_timeout_tlp()
7224 	    (rack->r_ctl.rc_tlp_cnt_out == 1)) {  in rack_timeout_tlp()
7233 		tp->t_flags &= ~TF_GPUTINPROG;  in rack_timeout_tlp()
7234 		rack_log_pacing_delay_calc(rack, (tp->gput_ack - tp->gput_seq) /*flex2*/,  in rack_timeout_tlp()
7235 					   rack->r_ctl.rc_gp_srtt /*flex1*/,  in rack_timeout_tlp()
7236 					   tp->gput_seq,  in rack_timeout_tlp()
7243 	if (rack_always_send_oldest && (TAILQ_EMPTY(&rack->r_ctl.rc_tmap) == 0))  in rack_timeout_tlp()
7248 		amm = avail - out;  in rack_timeout_tlp()
7251 			if ((amm + out) > tp->snd_wnd) {  in rack_timeout_tlp()
7259 		if (IN_FASTRECOVERY(tp->t_flags)) {  in rack_timeout_tlp()
7261 			if (rack->rack_no_prr == 0) {  in rack_timeout_tlp()
7262 				if (out + amm <= tp->snd_wnd) {  in rack_timeout_tlp()
7263 					rack->r_ctl.rc_prr_sndcnt = amm;  in rack_timeout_tlp()
7264 					rack->r_ctl.rc_tlp_new_data = amm;  in rack_timeout_tlp()
7270 			/* Set the send-new override */  in rack_timeout_tlp()
7271 			if (out + amm <= tp->snd_wnd)  in rack_timeout_tlp()
7272 				rack->r_ctl.rc_tlp_new_data = amm;  in rack_timeout_tlp()
7276 		rack->r_ctl.rc_tlpsend = NULL;  in rack_timeout_tlp()
7282 	 * Ok we need to arrange the last un-acked segment to be re-sent, or  in rack_timeout_tlp()
7283 	 * optionally the first un-acked segment.  in rack_timeout_tlp()
7287 			rsm = TAILQ_FIRST(&rack->r_ctl.rc_tmap);  in rack_timeout_tlp()
7289 			rsm = tqhash_max(rack->r_ctl.tqh);  in rack_timeout_tlp()
7290 			if (rsm && (rsm->r_flags & (RACK_ACKED | RACK_HAS_FIN))) {  in rack_timeout_tlp()
7305 		if (SEQ_GT((rack->r_ctl.last_collapse_point - 1), rack->rc_tp->snd_una))  in rack_timeout_tlp()
7306 			rsm = tqhash_find(rack->r_ctl.tqh, (rack->r_ctl.last_collapse_point - 1));  in rack_timeout_tlp()
7308 			rsm = tqhash_min(rack->r_ctl.tqh);  in rack_timeout_tlp()
7315 	if ((rsm->r_end - rsm->r_start) > ctf_fixed_maxseg(tp)) {  in rack_timeout_tlp()
7330 			       (rsm->r_end - ctf_fixed_maxseg(tp)));  in rack_timeout_tlp()
7333 		(void)tqhash_insert(rack->r_ctl.tqh, nrsm);  in rack_timeout_tlp()
7335 		if ((insret = tqhash_insert(rack->r_ctl.tqh, nrsm)) != 0) {  in rack_timeout_tlp()
7340 		if (rsm->r_in_tmap) {  in rack_timeout_tlp()
7341 			TAILQ_INSERT_AFTER(&rack->r_ctl.rc_tmap, rsm, nrsm, r_tnext);  in rack_timeout_tlp()
7342 			nrsm->r_in_tmap = 1;  in rack_timeout_tlp()
7346 	rack->r_ctl.rc_tlpsend = rsm;  in rack_timeout_tlp()
7350 	rack->r_timer_override = 1;  in rack_timeout_tlp()
7351 	rack->r_ctl.rc_hpts_flags &= ~PACE_TMR_TLP;  in rack_timeout_tlp()
7354 	rack->r_ctl.rc_hpts_flags &= ~PACE_TMR_TLP;  in rack_timeout_tlp()
7371 	tp->t_flags &= ~TF_DELACK;  in rack_timeout_delack()
7372 	tp->t_flags |= TF_ACKNOW;  in rack_timeout_delack()
7374 	rack->r_ctl.rc_hpts_flags &= ~PACE_TMR_DELACK;  in rack_timeout_delack()
7383 	t_template = tcpip_maketemplate(rack->rc_inp);  in rack_send_ack_challange()
7385 		if (rack->forced_ack == 0) {  in rack_send_ack_challange()
7386 			rack->forced_ack = 1;  in rack_send_ack_challange()
7387 			rack->r_ctl.forced_ack_ts = tcp_get_usecs(NULL);  in rack_send_ack_challange()
7389 			rack->probe_not_answered = 1;  in rack_send_ack_challange()
7391 		tcp_respond(rack->rc_tp, t_template->tt_ipgen,  in rack_send_ack_challange()
7392 			    &t_template->tt_t, (struct mbuf *)NULL,  in rack_send_ack_challange()
7393 			    rack->rc_tp->rcv_nxt, rack->rc_tp->snd_una - 1, 0);  in rack_send_ack_challange()
7395 		/* This does send an ack so kill any D-ack timer */  in rack_send_ack_challange()
7396 		if (rack->rc_tp->t_flags & TF_DELACK)  in rack_send_ack_challange()
7397 			rack->rc_tp->t_flags &= ~TF_DELACK;  in rack_send_ack_challange()
7417 	if (rack->rc_in_persist == 0)  in rack_timeout_persist()
7422 		counter_u64_add(rack_persists_lost_ends, rack->r_ctl.persist_lost_ends);  in rack_timeout_persist()
7423 		return (-ETIMEDOUT);	/* tcp_drop() */  in rack_timeout_persist()
7436 	if (tp->t_rxtshift >= V_tcp_retries &&  in rack_timeout_persist()
7437 	    (ticks - tp->t_rcvtime >= tcp_maxpersistidle ||  in rack_timeout_persist()
7438 	     TICKS_2_USEC(ticks - tp->t_rcvtime) >= RACK_REXMTVAL(tp) * tcp_totbackoff)) {  in rack_timeout_persist()
7441 		counter_u64_add(rack_persists_lost_ends, rack->r_ctl.persist_lost_ends);  in rack_timeout_persist()
7442 		retval = -ETIMEDOUT;	/* tcp_drop() */  in rack_timeout_persist()
7445 	if ((sbavail(&rack->rc_inp->inp_socket->so_snd) == 0) &&  in rack_timeout_persist()
7446 	    tp->snd_una == tp->snd_max)  in rack_timeout_persist()
7448 	rack->r_ctl.rc_hpts_flags &= ~PACE_TMR_PERSIT;  in rack_timeout_persist()
7453 	if (tp->t_state > TCPS_CLOSE_WAIT &&  in rack_timeout_persist()
7454 	    (ticks - tp->t_rcvtime) >= TCPTV_PERSMAX) {  in rack_timeout_persist()
7457 		counter_u64_add(rack_persists_lost_ends, rack->r_ctl.persist_lost_ends);  in rack_timeout_persist()
7458 		retval = -ETIMEDOUT;	/* tcp_drop() */  in rack_timeout_persist()
7463 		if (rack->probe_not_answered) {  in rack_timeout_persist()
7465 			rack->r_ctl.persist_lost_ends++;  in rack_timeout_persist()
7470 	if (tp->t_rxtshift < V_tcp_retries)  in rack_timeout_persist()
7471 		tp->t_rxtshift++;  in rack_timeout_persist()
7490 	rack->r_ctl.rc_hpts_flags &= ~PACE_TMR_KEEP;  in rack_timeout_keepalive()
7493 	 * Keep-alive timer went off; send something or drop connection if  in rack_timeout_keepalive()
7497 	if (tp->t_state < TCPS_ESTABLISHED)  in rack_timeout_keepalive()
7499 	if ((V_tcp_always_keepalive || inp->inp_socket->so_options & SO_KEEPALIVE) &&  in rack_timeout_keepalive()
7500 	    tp->t_state <= TCPS_CLOSING) {  in rack_timeout_keepalive()
7501 		if (ticks - tp->t_rcvtime >= TP_KEEPIDLE(tp) + TP_MAXIDLE(tp))  in rack_timeout_keepalive()
7508 		 * number tp->snd_una-1 causes the transmitted zero-length  in rack_timeout_keepalive()
7521 	return (-ETIMEDOUT);	/* tcp_drop() */  in rack_timeout_keepalive()
7533 	 * un-acked.  in rack_remxt_tmr()
7538 	rack = (struct tcp_rack *)tp->t_fb_ptr;  in rack_remxt_tmr()
7541 	rack->r_timer_override = 1;  in rack_remxt_tmr()
7542 	rack->r_ctl.rc_snd_max_at_rto = tp->snd_max;  in rack_remxt_tmr()
7543 	rack->r_ctl.rc_last_timeout_snduna = tp->snd_una;  in rack_remxt_tmr()
7544 	rack->r_late = 0;  in rack_remxt_tmr()
7545 	rack->r_early = 0;  in rack_remxt_tmr()
7546 	rack->r_ctl.rc_agg_delayed = 0;  in rack_remxt_tmr()
7547 	rack->r_ctl.rc_agg_early = 0;  in rack_remxt_tmr()
7548 	if (rack->r_state && (rack->r_state != tp->t_state))  in rack_remxt_tmr()
7550 	if (tp->t_rxtshift <= rack_rxt_scoreboard_clear_thresh) {  in rack_remxt_tmr()
7553 		 * more than rack_rxt_scoreboard_clear_thresh time-outs.  in rack_remxt_tmr()
7555 		rack->r_ctl.rc_resend = TAILQ_FIRST(&rack->r_ctl.rc_tmap);  in rack_remxt_tmr()
7556 		if (rack->r_ctl.rc_resend != NULL)  in rack_remxt_tmr()
7557 			rack->r_ctl.rc_resend->r_flags |= RACK_TO_REXT;  in rack_remxt_tmr()
7563 	 * mark SACK-PASS on anything not acked here.  in rack_remxt_tmr()
7572 	 * sacks that come floating in will "re-ack" the data.  in rack_remxt_tmr()
7577 	TAILQ_INIT(&rack->r_ctl.rc_tmap);  in rack_remxt_tmr()
7579 	TQHASH_FOREACH(rsm, rack->r_ctl.tqh)  {  in rack_remxt_tmr()
7580 		rsm->r_dupack = 0;  in rack_remxt_tmr()
7583 		/* We must re-add it back to the tlist */  in rack_remxt_tmr()
7585 			TAILQ_INSERT_HEAD(&rack->r_ctl.rc_tmap, rsm, r_tnext);  in rack_remxt_tmr()
7587 			TAILQ_INSERT_AFTER(&rack->r_ctl.rc_tmap, trsm, rsm, r_tnext);  in rack_remxt_tmr()
7589 		rsm->r_in_tmap = 1;  in rack_remxt_tmr()
7591 		if (rsm->r_flags & RACK_ACKED)  in rack_remxt_tmr()
7592 			rsm->r_flags |= RACK_WAS_ACKED;  in rack_remxt_tmr()
7593 …rsm->r_flags &= ~(RACK_ACKED | RACK_SACK_PASSED | RACK_WAS_SACKPASS | RACK_RWND_COLLAPSED | RACK_W…  in rack_remxt_tmr()
7594 		rsm->r_flags |= RACK_MUST_RXT;  in rack_remxt_tmr()
7596 	/* zero the lost since it's all gone */  in rack_remxt_tmr()
7597 	rack->r_ctl.rc_considered_lost = 0;  in rack_remxt_tmr()
7598 	/* Clear the count (we just un-acked them) */  in rack_remxt_tmr()
7599 	rack->r_ctl.rc_sacked = 0;  in rack_remxt_tmr()
7600 	rack->r_ctl.rc_sacklast = NULL;  in rack_remxt_tmr()
7602 	rack->r_ctl.rc_resend = tqhash_min(rack->r_ctl.tqh);  in rack_remxt_tmr()
7603 	if (rack->r_ctl.rc_resend != NULL)  in rack_remxt_tmr()
7604 		rack->r_ctl.rc_resend->r_flags |= RACK_TO_REXT;  in rack_remxt_tmr()
7605 	rack->r_ctl.rc_prr_sndcnt = 0;  in rack_remxt_tmr()
7607 	rack->r_ctl.rc_resend = tqhash_min(rack->r_ctl.tqh);  in rack_remxt_tmr()
7608 	if (rack->r_ctl.rc_resend != NULL)  in rack_remxt_tmr()
7609 		rack->r_ctl.rc_resend->r_flags |= RACK_TO_REXT;  in rack_remxt_tmr()
7610 	if (((tp->t_flags & TF_SACK_PERMIT) == 0) &&  in rack_remxt_tmr()
7611 	    ((tp->t_flags & TF_SENTFIN) == 0)) {  in rack_remxt_tmr()
7613 		 * For non-sack customers new data  in rack_remxt_tmr()
7617 		rack->r_must_retran = 1;  in rack_remxt_tmr()
7618 		rack->r_ctl.rc_out_at_rto = ctf_flight_size(rack->rc_tp,  in rack_remxt_tmr()
7619 							    rack->r_ctl.rc_sacked);  in rack_remxt_tmr()
7627 	tp->t_rxtcur = RACK_REXMTVAL(tp);  in rack_convert_rtts()
7628 	if (TCPS_HAVEESTABLISHED(tp->t_state)) {  in rack_convert_rtts()
7629 		tp->t_rxtcur += TICKS_2_USEC(tcp_rexmit_slop);  in rack_convert_rtts()
7631 	if (tp->t_rxtcur > rack_rto_max) {  in rack_convert_rtts()
7632 		tp->t_rxtcur = rack_rto_max;  in rack_convert_rtts()
7642 	rack = (struct tcp_rack *)tp->t_fb_ptr;  in rack_cc_conn_init()
7643 	srtt = tp->t_srtt;  in rack_cc_conn_init()
7649 	if ((srtt == 0) && (tp->t_srtt != 0))  in rack_cc_conn_init()
7657 	if (tp->snd_ssthresh < tp->snd_wnd) {  in rack_cc_conn_init()
7658 		tp->snd_ssthresh = tp->snd_wnd;  in rack_cc_conn_init()
7664 	if (rc_init_window(rack) < tp->snd_cwnd)  in rack_cc_conn_init()
7665 		tp->snd_cwnd = rc_init_window(rack);  in rack_cc_conn_init()
7669  * Re-transmit timeout! If we drop the PCB we will return 1, otherwise
7680 	if ((tp->t_flags & TF_GPUTINPROG) &&  in rack_timeout_rxt()
7681 	    (tp->t_rxtshift)) {  in rack_timeout_rxt()
7688 		tp->t_flags &= ~TF_GPUTINPROG;  in rack_timeout_rxt()
7689 		rack_log_pacing_delay_calc(rack, (tp->gput_ack - tp->gput_seq) /*flex2*/,  in rack_timeout_rxt()
7690 					   rack->r_ctl.rc_gp_srtt /*flex1*/,  in rack_timeout_rxt()
7691 					   tp->gput_seq,  in rack_timeout_rxt()
7697 		return (-ETIMEDOUT);	/* tcp_drop() */  in rack_timeout_rxt()
7699 	rack->r_ctl.rc_hpts_flags &= ~PACE_TMR_RXT;  in rack_timeout_rxt()
7700 	rack->r_ctl.retran_during_recovery = 0;  in rack_timeout_rxt()
7701 	rack->rc_ack_required = 1;  in rack_timeout_rxt()
7702 	rack->r_ctl.dsack_byte_cnt = 0;  in rack_timeout_rxt()
7703 	if (IN_RECOVERY(tp->t_flags) &&  in rack_timeout_rxt()
7704 	    (rack->rto_from_rec == 0)) {  in rack_timeout_rxt()
7711 		rack->rto_from_rec = 1;  in rack_timeout_rxt()
7712 		rack->r_ctl.rto_ssthresh = tp->snd_ssthresh;  in rack_timeout_rxt()
7714 	if (IN_FASTRECOVERY(tp->t_flags))  in rack_timeout_rxt()
7715 		tp->t_flags |= TF_WASFRECOVERY;  in rack_timeout_rxt()
7717 		tp->t_flags &= ~TF_WASFRECOVERY;  in rack_timeout_rxt()
7718 	if (IN_CONGRECOVERY(tp->t_flags))  in rack_timeout_rxt()
7719 		tp->t_flags |= TF_WASCRECOVERY;  in rack_timeout_rxt()
7721 		tp->t_flags &= ~TF_WASCRECOVERY;  in rack_timeout_rxt()
7722 	if (TCPS_HAVEESTABLISHED(tp->t_state) &&  in rack_timeout_rxt()
7723 	    (tp->snd_una == tp->snd_max)) {  in rack_timeout_rxt()
7727 	if (rack->r_ctl.dsack_persist) {  in rack_timeout_rxt()
7728 		rack->r_ctl.dsack_persist--;  in rack_timeout_rxt()
7729 		if (rack->r_ctl.num_dsack && (rack->r_ctl.dsack_persist == 0)) {  in rack_timeout_rxt()
7730 			rack->r_ctl.num_dsack = 0;  in rack_timeout_rxt()
7742 	if ((TCPS_HAVEESTABLISHED(tp->t_state) == 0) &&  in rack_timeout_rxt()
7746 		rsm = tqhash_min(rack->r_ctl.tqh);  in rack_timeout_rxt()
7749 			if ((TSTMP_GT(cts, (uint32_t)rsm->r_tim_lastsent[0])) &&  in rack_timeout_rxt()
7750 			    ((cts - (uint32_t)rsm->r_tim_lastsent[0]) >= TICKS_2_USEC(TP_KEEPINIT(tp)))) {  in rack_timeout_rxt()
7762 	if ((rack->r_ctl.rc_resend == NULL) ||  in rack_timeout_rxt()
7763 	    ((rack->r_ctl.rc_resend->r_flags & RACK_RWND_COLLAPSED) == 0)) {  in rack_timeout_rxt()
7770 		tp->t_rxtshift++;  in rack_timeout_rxt()
7773 	if (tp->t_rxtshift > V_tcp_retries) {  in rack_timeout_rxt()
7776 		tp->t_rxtshift = V_tcp_retries;  in rack_timeout_rxt()
7779 		MPASS(tp->t_softerror >= 0);  in rack_timeout_rxt()
7780 		retval = tp->t_softerror ? -tp->t_softerror : -ETIMEDOUT;  in rack_timeout_rxt()
7783 	if (tp->t_state == TCPS_SYN_SENT) {  in rack_timeout_rxt()
7788 		tp->snd_cwnd = 1;  in rack_timeout_rxt()
7789 	} else if (tp->t_rxtshift == 1) {  in rack_timeout_rxt()
7796 		 * End-to-End Network Path Properties" by Allman and Paxson  in rack_timeout_rxt()
7799 		tp->snd_cwnd_prev = tp->snd_cwnd;  in rack_timeout_rxt()
7800 		tp->snd_ssthresh_prev = tp->snd_ssthresh;  in rack_timeout_rxt()
7801 		tp->snd_recover_prev = tp->snd_recover;  in rack_timeout_rxt()
7802 		tp->t_badrxtwin = ticks + (USEC_2_TICKS(tp->t_srtt)/2);  in rack_timeout_rxt()
7803 		tp->t_flags |= TF_PREVVALID;  in rack_timeout_rxt()
7804 	} else if ((tp->t_flags & TF_RCVD_TSTMP) == 0)  in rack_timeout_rxt()
7805 		tp->t_flags &= ~TF_PREVVALID;  in rack_timeout_rxt()
7807 	if ((tp->t_state == TCPS_SYN_SENT) ||  in rack_timeout_rxt()
7808 	    (tp->t_state == TCPS_SYN_RECEIVED))  in rack_timeout_rxt()
7809 		rexmt = RACK_INITIAL_RTO * tcp_backoff[tp->t_rxtshift];  in rack_timeout_rxt()
7811 		rexmt = max(rack_rto_min, (tp->t_srtt + (tp->t_rttvar << 2))) * tcp_backoff[tp->t_rxtshift];  in rack_timeout_rxt()
7813 	RACK_TCPT_RANGESET(tp->t_rxtcur, rexmt,  in rack_timeout_rxt()
7814 	   max(rack_rto_min, rexmt), rack_rto_max, rack->r_ctl.timer_slop);  in rack_timeout_rxt()
7823 	isipv6 = (inp->inp_vflag & INP_IPV6) ? true : false;  in rack_timeout_rxt()
7830 	    ((tp->t_state == TCPS_ESTABLISHED) ||  in rack_timeout_rxt()
7831 	    (tp->t_state == TCPS_FIN_WAIT_1))) {  in rack_timeout_rxt()
7834 		 * 1448 -> 1188 -> 524) should be given 2 chances to recover  in rack_timeout_rxt()
7835 		 * before further clamping down. 'tp->t_rxtshift % 2 == 0'  in rack_timeout_rxt()
7838 		if (((tp->t_flags2 & (TF2_PLPMTU_PMTUD | TF2_PLPMTU_MAXSEGSNT)) ==  in rack_timeout_rxt()
7840 		    (tp->t_rxtshift >= 2 && tp->t_rxtshift < 6 &&  in rack_timeout_rxt()
7841 		    tp->t_rxtshift % 2 == 0)) {  in rack_timeout_rxt()
7843 			 * Enter Path MTU Black-hole Detection mechanism: -  in rack_timeout_rxt()
7844 			 * Disable Path MTU Discovery (IP "DF" bit). -  in rack_timeout_rxt()
7848 			if ((tp->t_flags2 & TF2_PLPMTU_BLACKHOLE) == 0) {  in rack_timeout_rxt()
7850 				tp->t_flags2 |= TF2_PLPMTU_BLACKHOLE;  in rack_timeout_rxt()
7852 				tp->t_pmtud_saved_maxseg = tp->t_maxseg;  in rack_timeout_rxt()
7861 			    tp->t_maxseg > V_tcp_v6pmtud_blackhole_mss) {  in rack_timeout_rxt()
7863 				tp->t_maxseg = V_tcp_v6pmtud_blackhole_mss;  in rack_timeout_rxt()
7867 				tp->t_maxseg = V_tcp_v6mssdflt;  in rack_timeout_rxt()
7872 				tp->t_flags2 &= ~TF2_PLPMTU_PMTUD;  in rack_timeout_rxt()
7880 			if (tp->t_maxseg > V_tcp_pmtud_blackhole_mss) {  in rack_timeout_rxt()
7882 				tp->t_maxseg = V_tcp_pmtud_blackhole_mss;  in rack_timeout_rxt()
7886 				tp->t_maxseg = V_tcp_mssdflt;  in rack_timeout_rxt()
7891 				tp->t_flags2 &= ~TF2_PLPMTU_PMTUD;  in rack_timeout_rxt()
7904 			if ((tp->t_flags2 & TF2_PLPMTU_BLACKHOLE) &&  in rack_timeout_rxt()
7905 			    (tp->t_rxtshift >= 6)) {  in rack_timeout_rxt()
7906 				tp->t_flags2 |= TF2_PLPMTU_PMTUD;  in rack_timeout_rxt()
7907 				tp->t_flags2 &= ~TF2_PLPMTU_BLACKHOLE;  in rack_timeout_rxt()
7908 				tp->t_maxseg = tp->t_pmtud_saved_maxseg;  in rack_timeout_rxt()
7909 				if (tp->t_maxseg < V_tcp_mssdflt) {  in rack_timeout_rxt()
7915 					tp->t_flags2 |= TF2_PROC_SACK_PROHIBIT;  in rack_timeout_rxt()
7917 					tp->t_flags2 &= ~TF2_PROC_SACK_PROHIBIT;  in rack_timeout_rxt()
7925 	 * our third SYN to work-around some broken terminal servers  in rack_timeout_rxt()
7928 	 * unknown-to-them TCP options.  in rack_timeout_rxt()
7930 	if (tcp_rexmit_drop_options && (tp->t_state == TCPS_SYN_SENT) &&  in rack_timeout_rxt()
7931 	    (tp->t_rxtshift == 3))  in rack_timeout_rxt()
7932 		tp->t_flags &= ~(TF_REQ_SCALE|TF_REQ_TSTMP|TF_SACK_PERMIT);  in rack_timeout_rxt()
7939 	if (tp->t_rxtshift > TCP_MAXRXTSHIFT / 4) {  in rack_timeout_rxt()
7941 		if ((inp->inp_vflag & INP_IPV6) != 0)  in rack_timeout_rxt()
7946 		tp->t_rttvar += tp->t_srtt;  in rack_timeout_rxt()
7947 		tp->t_srtt = 0;  in rack_timeout_rxt()
7949 	sack_filter_clear(&rack->r_ctl.rack_sf, tp->snd_una);  in rack_timeout_rxt()
7950 	tp->snd_recover = tp->snd_max;  in rack_timeout_rxt()
7951 	tp->t_flags |= TF_ACKNOW;  in rack_timeout_rxt()
7952 	tp->t_rtttime = 0;  in rack_timeout_rxt()
7953 	rack_cong_signal(tp, CC_RTO, tp->snd_una, __LINE__);  in rack_timeout_rxt()
7962 	int32_t timers = (rack->r_ctl.rc_hpts_flags & PACE_TMR_MASK);  in rack_process_timers()
7964 	if ((tp->t_state >= TCPS_FIN_WAIT_1) &&  in rack_process_timers()
7965 	    (tp->t_flags & TF_GPUTINPROG)) {  in rack_process_timers()
7974 		bytes = tp->gput_ack - tp->gput_seq;  in rack_process_timers()
7975 		if (SEQ_GT(tp->gput_seq, tp->snd_una))  in rack_process_timers()
7976 			bytes += tp->gput_seq - tp->snd_una;  in rack_process_timers()
7977 		if (bytes > sbavail(&tptosocket(tp)->so_snd)) {  in rack_process_timers()
7983 			rack_log_pacing_delay_calc(rack, (tp->gput_ack - tp->gput_seq) /*flex2*/,  in rack_process_timers()
7984 						   rack->r_ctl.rc_gp_srtt /*flex1*/,  in rack_process_timers()
7985 						   tp->gput_seq,  in rack_process_timers()
7987 			tp->t_flags &= ~TF_GPUTINPROG;  in rack_process_timers()
7993 	if (tp->t_state == TCPS_LISTEN) {  in rack_process_timers()
7995 		if (rack->r_ctl.rc_hpts_flags & PACE_PKT_OUTPUT)  in rack_process_timers()
8000 	    rack->rc_on_min_to) {  in rack_process_timers()
8003 		 * are on a min-timeout (which means rrr_conf = 3)  in rack_process_timers()
8008 		 * If its on a normal rack timer (non-min) then  in rack_process_timers()
8013 	if (TSTMP_LT(cts, rack->r_ctl.rc_timer_exp)) {  in rack_process_timers()
8016 		if (rack->r_ctl.rc_hpts_flags & PACE_PKT_OUTPUT) {  in rack_process_timers()
8017 			ret = -1;  in rack_process_timers()
8028 			ret = -2;  in rack_process_timers()
8035 		 * no-sack wakeup on since we no longer have a PKT_OUTPUT  in rack_process_timers()
8038 		rack->rc_tp->t_flags2 &= ~TF2_DONT_SACK_QUEUE;  in rack_process_timers()
8039 		ret = -3;  in rack_process_timers()
8040 		left = rack->r_ctl.rc_timer_exp - cts;  in rack_process_timers()
8046 	rack->rc_tmr_stopped = 0;  in rack_process_timers()
8047 	rack->r_ctl.rc_hpts_flags &= ~PACE_TMR_MASK;  in rack_process_timers()
8051 		rack->r_ctl.rc_tlp_rxt_last_time = cts;  in rack_process_timers()
8052 		rack->r_fast_output = 0;  in rack_process_timers()
8055 		rack->r_ctl.rc_tlp_rxt_last_time = cts;  in rack_process_timers()
8058 		rack->r_ctl.rc_tlp_rxt_last_time = cts;  in rack_process_timers()
8059 		rack->r_fast_output = 0;  in rack_process_timers()
8077 	flags_on_entry = rack->r_ctl.rc_hpts_flags;  in rack_timer_cancel()
8079 	if ((rack->r_ctl.rc_hpts_flags & PACE_PKT_OUTPUT) &&  in rack_timer_cancel()
8080 	    ((TSTMP_GEQ(us_cts, rack->r_ctl.rc_last_output_to)) ||  in rack_timer_cancel()
8081 	     ((tp->snd_max - tp->snd_una) == 0))) {  in rack_timer_cancel()
8082 		tcp_hpts_remove(rack->rc_tp);  in rack_timer_cancel()
8085 		if ((tp->snd_max - tp->snd_una) == 0)  in rack_timer_cancel()
8086 			rack->r_ctl.rc_hpts_flags &= ~PACE_PKT_OUTPUT;  in rack_timer_cancel()
8089 	if (rack->r_ctl.rc_hpts_flags & PACE_TMR_MASK) {  in rack_timer_cancel()
8090 		rack->rc_tmr_stopped = rack->r_ctl.rc_hpts_flags & PACE_TMR_MASK;  in rack_timer_cancel()
8091 		if (tcp_in_hpts(rack->rc_tp) &&  in rack_timer_cancel()
8092 		    ((rack->r_ctl.rc_hpts_flags & PACE_PKT_OUTPUT) == 0)) {  in rack_timer_cancel()
8098 			tcp_hpts_remove(rack->rc_tp);  in rack_timer_cancel()
8101 		rack->r_ctl.rc_hpts_flags &= ~(PACE_TMR_MASK);  in rack_timer_cancel()
8112 	rack = (struct tcp_rack *)tp->t_fb_ptr;  in rack_stopall()
8113 	rack->t_timers_stopped = 1;  in rack_stopall()
8128 		rack->rc_in_persist = 1;  in rack_stop_all_timers()
8130 	if (tcp_in_hpts(rack->rc_tp)) {  in rack_stop_all_timers()
8131 		tcp_hpts_remove(rack->rc_tp);  in rack_stop_all_timers()
8141 	rsm->r_rtr_cnt++;  in rack_update_rsm()
8142 	if (rsm->r_rtr_cnt > RACK_NUM_OF_RETRANS) {  in rack_update_rsm()
8143 		rsm->r_rtr_cnt = RACK_NUM_OF_RETRANS;  in rack_update_rsm()
8144 		rsm->r_flags |= RACK_OVERMAX;  in rack_update_rsm()
8146 	rsm->r_act_rxt_cnt++;  in rack_update_rsm()
8149 	rsm->r_dupack = 0;  in rack_update_rsm()
8150 	if ((rsm->r_rtr_cnt > 1) && ((rsm->r_flags & RACK_TLP) == 0)) {  in rack_update_rsm()
8151 		rack->r_ctl.rc_holes_rxt += (rsm->r_end - rsm->r_start);  in rack_update_rsm()
8152 		rsm->r_rtr_bytes += (rsm->r_end - rsm->r_start);  in rack_update_rsm()
8154 	if (rsm->r_flags & RACK_WAS_LOST) {  in rack_update_rsm()
8160 		rsm->r_flags  &= ~RACK_WAS_LOST;  in rack_update_rsm()
8161 		KASSERT((rack->r_ctl.rc_considered_lost >= (rsm->r_end - rsm->r_start)),  in rack_update_rsm()
8163 		if (rack->r_ctl.rc_considered_lost >= (rsm->r_end - rsm->r_start))  in rack_update_rsm()
8164 			rack->r_ctl.rc_considered_lost -= rsm->r_end - rsm->r_start;  in rack_update_rsm()
8166 			rack->r_ctl.rc_considered_lost = 0;  in rack_update_rsm()
8168 	idx = rsm->r_rtr_cnt - 1;  in rack_update_rsm()
8169 	rsm->r_tim_lastsent[idx] = ts;  in rack_update_rsm()
8172 	 * in snduna <->snd_max.  in rack_update_rsm()
8174 	rsm->r_fas = ctf_flight_size(rack->rc_tp,  in rack_update_rsm()
8175 				     rack->r_ctl.rc_sacked);  in rack_update_rsm()
8176 	if (rsm->r_flags & RACK_ACKED) {  in rack_update_rsm()
8178 		rsm->r_flags &= ~RACK_ACKED;  in rack_update_rsm()
8179 		rack->r_ctl.rc_sacked -= (rsm->r_end - rsm->r_start);  in rack_update_rsm()
8181 	if (rsm->r_in_tmap) {  in rack_update_rsm()
8182 		TAILQ_REMOVE(&rack->r_ctl.rc_tmap, rsm, r_tnext);  in rack_update_rsm()
8183 		rsm->r_in_tmap = 0;  in rack_update_rsm()
8187 	TAILQ_INSERT_TAIL(&rack->r_ctl.rc_tmap, rsm, r_tnext);  in rack_update_rsm()
8188 	rsm->r_in_tmap = 1;  in rack_update_rsm()
8189 	rsm->r_bas = (uint8_t)(((rsm->r_end - rsm->r_start) + segsiz - 1) / segsiz);  in rack_update_rsm()
8191 	if (rsm->r_flags & RACK_MUST_RXT) {  in rack_update_rsm()
8192 		if (rack->r_must_retran)  in rack_update_rsm()
8193 			rack->r_ctl.rc_out_at_rto -= (rsm->r_end - rsm->r_start);  in rack_update_rsm()
8194 		if (SEQ_GEQ(rsm->r_end, rack->r_ctl.rc_snd_max_at_rto)) {  in rack_update_rsm()
8199 			rack->r_must_retran = 0;  in rack_update_rsm()
8200 			rack->r_ctl.rc_out_at_rto = 0;  in rack_update_rsm()
8202 		rsm->r_flags &= ~RACK_MUST_RXT;  in rack_update_rsm()
8205 	rsm->r_flags &= ~RACK_RWND_COLLAPSED;  in rack_update_rsm()
8206 	if (rsm->r_flags & RACK_SACK_PASSED) {  in rack_update_rsm()
8208 		rsm->r_flags &= ~RACK_SACK_PASSED;  in rack_update_rsm()
8209 		rsm->r_flags |= RACK_WAS_SACKPASS;  in rack_update_rsm()
8218 	 * We (re-)transmitted starting at rsm->r_start for some length  in rack_update_entry()
8227 	c_end = rsm->r_start + len;  in rack_update_entry()
8228 	if (SEQ_GEQ(c_end, rsm->r_end)) {  in rack_update_entry()
8234 		if (c_end == rsm->r_end) {  in rack_update_entry()
8241 			act_len = rsm->r_end - rsm->r_start;  in rack_update_entry()
8242 			*lenp = (len - act_len);  in rack_update_entry()
8243 			return (rsm->r_end);  in rack_update_entry()
8267 	nrsm->r_dupack = 0;  in rack_update_entry()
8270 	(void)tqhash_insert(rack->r_ctl.tqh, nrsm);  in rack_update_entry()
8272 	if ((insret = tqhash_insert(rack->r_ctl.tqh, nrsm)) != 0) {  in rack_update_entry()
8277 	if (rsm->r_in_tmap) {  in rack_update_entry()
8278 		TAILQ_INSERT_AFTER(&rack->r_ctl.rc_tmap, rsm, nrsm, r_tnext);  in rack_update_entry()
8279 		nrsm->r_in_tmap = 1;  in rack_update_entry()
8281 	rsm->r_flags &= (~RACK_HAS_FIN);  in rack_update_entry()
8319 	 * -- i.e. return if err != 0 or should we pretend we sent it? --  in rack_log_output()
8325 		 * We don't log errors -- we could but snd_max does not  in rack_log_output()
8337 	rack = (struct tcp_rack *)tp->t_fb_ptr;  in rack_log_output()
8338 	snd_una = tp->snd_una;  in rack_log_output()
8339 	snd_max = tp->snd_max;  in rack_log_output()
8347 		if ((th_flags & TH_SYN) && (seq_out == tp->iss))  in rack_log_output()
8353 		/* Are sending an old segment to induce an ack (keep-alive)? */  in rack_log_output()
8363 			len = end - seq_out;  in rack_log_output()
8371 	if (IN_FASTRECOVERY(tp->t_flags)) {  in rack_log_output()
8372 		rack->r_ctl.rc_prr_out += len;  in rack_log_output()
8388 			rsm->r_flags = RACK_HAS_FIN|add_flag;  in rack_log_output()
8390 			rsm->r_flags = add_flag;  in rack_log_output()
8393 			rsm->r_hw_tls = 1;  in rack_log_output()
8394 		rsm->r_tim_lastsent[0] = cts;  in rack_log_output()
8395 		rsm->r_rtr_cnt = 1;  in rack_log_output()
8396  		rsm->r_act_rxt_cnt = 0;  in rack_log_output()
8397 		rsm->r_rtr_bytes = 0;  in rack_log_output()
8400 			rsm->r_flags |= RACK_HAS_SYN;  in rack_log_output()
8402 		rsm->r_start = seq_out;  in rack_log_output()
8403 		rsm->r_end = rsm->r_start + len;  in rack_log_output()
8405 		rsm->r_dupack = 0;  in rack_log_output()
8411 		rsm->m = s_mb;  in rack_log_output()
8412 		rsm->soff = s_moff;  in rack_log_output()
8415 		 * reflected in in snduna <->snd_max  in rack_log_output()
8417 		rsm->r_fas = (ctf_flight_size(rack->rc_tp,  in rack_log_output()
8418 					      rack->r_ctl.rc_sacked) +  in rack_log_output()
8419 			      (rsm->r_end - rsm->r_start));  in rack_log_output()
8420 		if ((rack->rc_initial_ss_comp == 0) &&  in rack_log_output()
8421 		    (rack->r_ctl.ss_hi_fs < rsm->r_fas)) {  in rack_log_output()
8422 			   rack->r_ctl.ss_hi_fs = rsm->r_fas;  in rack_log_output()
8424 		/* rsm->m will be NULL if RACK_HAS_SYN or RACK_HAS_FIN is set */  in rack_log_output()
8425 		if (rsm->m) {  in rack_log_output()
8426 			if (rsm->m->m_len <= rsm->soff) {  in rack_log_output()
8432 				 * within rsm->m. But if the sbsndptr was  in rack_log_output()
8438 				lm = rsm->m;  in rack_log_output()
8439 				while (lm->m_len <= rsm->soff) {  in rack_log_output()
8440 					rsm->soff -= lm->m_len;  in rack_log_output()
8441 					lm = lm->m_next;  in rack_log_output()
8442 					KASSERT(lm != NULL, ("%s rack:%p lm goes null orig_off:%u origmb:%p rsm->soff:%u",  in rack_log_output()
8443 							     __func__, rack, s_moff, s_mb, rsm->soff));  in rack_log_output()
8445 				rsm->m = lm;  in rack_log_output()
8447 			rsm->orig_m_len = rsm->m->m_len;  in rack_log_output()
8448 			rsm->orig_t_space = M_TRAILINGROOM(rsm->m);  in rack_log_output()
8450 			rsm->orig_m_len = 0;  in rack_log_output()
8451 			rsm->orig_t_space = 0;  in rack_log_output()
8453 		rsm->r_bas = (uint8_t)((len + segsiz - 1) / segsiz);  in rack_log_output()
8458 		(void)tqhash_insert(rack->r_ctl.tqh, rsm);  in rack_log_output()
8460 		if ((insret = tqhash_insert(rack->r_ctl.tqh, rsm)) != 0) {  in rack_log_output()
8465 		TAILQ_INSERT_TAIL(&rack->r_ctl.rc_tmap, rsm, r_tnext);  in rack_log_output()
8466 		rsm->r_in_tmap = 1;  in rack_log_output()
8467 		if (rsm->r_flags & RACK_IS_PCM) {  in rack_log_output()
8468 			rack->r_ctl.pcm_i.send_time = cts;  in rack_log_output()
8469 			rack->r_ctl.pcm_i.eseq = rsm->r_end;  in rack_log_output()
8471 			if (rack->pcm_in_progress == 0)  in rack_log_output()
8472 				rack->r_ctl.pcm_i.sseq = rsm->r_start;  in rack_log_output()
8480 		if ((IN_FASTRECOVERY(tp->t_flags) == 0) &&  in rack_log_output()
8481 		    (ctf_flight_size(rack->rc_tp, rack->r_ctl.rc_sacked) == ctf_fixed_maxseg(tp))) {  in rack_log_output()
8484 			prsm = tqhash_prev(rack->r_ctl.tqh, rsm);  in rack_log_output()
8486 				prsm->r_one_out_nr = 1;  in rack_log_output()
8494 	if (hintrsm && (hintrsm->r_start == seq_out)) {  in rack_log_output()
8501 	if ((rsm) && (rsm->r_start == seq_out)) {  in rack_log_output()
8511 	rsm = tqhash_find(rack->r_ctl.tqh, seq_out);  in rack_log_output()
8513 		if (rsm->r_start == seq_out) {  in rack_log_output()
8521 		if (SEQ_GEQ(seq_out, rsm->r_start) && SEQ_LT(seq_out, rsm->r_end)) {  in rack_log_output()
8539 			(void)tqhash_insert(rack->r_ctl.tqh, nrsm);  in rack_log_output()
8541 			if ((insret = tqhash_insert(rack->r_ctl.tqh, nrsm)) != 0) {  in rack_log_output()
8546 			if (rsm->r_in_tmap) {  in rack_log_output()
8547 				TAILQ_INSERT_AFTER(&rack->r_ctl.rc_tmap, rsm, nrsm, r_tnext);  in rack_log_output()
8548 				nrsm->r_in_tmap = 1;  in rack_log_output()
8550 			rsm->r_flags &= (~RACK_HAS_FIN);  in rack_log_output()
8562 	if (seq_out == tp->snd_max) {  in rack_log_output()
8564 	} else if (SEQ_LT(seq_out, tp->snd_max)) {  in rack_log_output()
8566 		printf("seq_out:%u len:%d snd_una:%u snd_max:%u -- but rsm not found?\n",  in rack_log_output()
8567 		       seq_out, len, tp->snd_una, tp->snd_max);  in rack_log_output()
8569 		TQHASH_FOREACH(rsm, rack->r_ctl.tqh)  {  in rack_log_output()
8571 			       rsm, rsm->r_start, rsm->r_end);  in rack_log_output()
8580 		 * Hmm beyond sndmax? (only if we are using the new rtt-pack  in rack_log_output()
8584 		      seq_out, len, tp->snd_max, tp);  in rack_log_output()
8598 	if ((rack->r_ctl.rack_rs.rs_flags & RACK_RTT_EMPTY) ||  in tcp_rack_xmit_timer()
8599 	    (rack->r_ctl.rack_rs.rs_rtt_lowest > rtt)) {  in tcp_rack_xmit_timer()
8600 		rack->r_ctl.rack_rs.rs_rtt_lowest = rtt;  in tcp_rack_xmit_timer()
8602 	if ((rack->r_ctl.rack_rs.rs_flags & RACK_RTT_EMPTY) ||  in tcp_rack_xmit_timer()
8603 	    (rack->r_ctl.rack_rs.rs_rtt_highest < rtt)) {  in tcp_rack_xmit_timer()
8604 		rack->r_ctl.rack_rs.rs_rtt_highest = rtt;  in tcp_rack_xmit_timer()
8606 	if (rack->rc_tp->t_flags & TF_GPUTINPROG) {  in tcp_rack_xmit_timer()
8607 	    if (us_rtt < rack->r_ctl.rc_gp_lowrtt)  in tcp_rack_xmit_timer()
8608 		rack->r_ctl.rc_gp_lowrtt = us_rtt;  in tcp_rack_xmit_timer()
8609 	    if (rack->rc_tp->snd_wnd > rack->r_ctl.rc_gp_high_rwnd)  in tcp_rack_xmit_timer()
8610 		    rack->r_ctl.rc_gp_high_rwnd = rack->rc_tp->snd_wnd;  in tcp_rack_xmit_timer()
8614 	     (rsm->r_just_ret) ||  in tcp_rack_xmit_timer()
8615 	     (rsm->r_one_out_nr &&  in tcp_rack_xmit_timer()
8616 	      len < (ctf_fixed_maxseg(rack->rc_tp) * 2)))) {  in tcp_rack_xmit_timer()
8623 		 * the r_one_out_nr. If it was a CUM-ACK and  in tcp_rack_xmit_timer()
8630 	if ((rack->r_ctl.rack_rs.rs_flags & RACK_RTT_EMPTY) ||  in tcp_rack_xmit_timer()
8631 	    (rack->r_ctl.rack_rs.rs_us_rtt > us_rtt)) {  in tcp_rack_xmit_timer()
8632 		if (rack->r_ctl.rack_rs.confidence == 0) {  in tcp_rack_xmit_timer()
8637 			rack->r_ctl.rack_rs.rs_us_rtt = us_rtt;  in tcp_rack_xmit_timer()
8638 			rack->r_ctl.rack_rs.confidence = confidence;  in tcp_rack_xmit_timer()
8639 			rack->r_ctl.rack_rs.rs_us_rtrcnt = rtrcnt;  in tcp_rack_xmit_timer()
8648 			rack->r_ctl.rack_rs.rs_us_rtt = us_rtt;  in tcp_rack_xmit_timer()
8649 			rack->r_ctl.rack_rs.confidence = confidence;  in tcp_rack_xmit_timer()
8650 			rack->r_ctl.rack_rs.rs_us_rtrcnt = rtrcnt;  in tcp_rack_xmit_timer()
8653 	rack_log_rtt_upd(rack->rc_tp, rack, us_rtt, len, rsm, confidence);  in tcp_rack_xmit_timer()
8654 	rack->r_ctl.rack_rs.rs_flags = RACK_RTT_VALID;  in tcp_rack_xmit_timer()
8655 	rack->r_ctl.rack_rs.rs_rtt_tot += rtt;  in tcp_rack_xmit_timer()
8656 	rack->r_ctl.rack_rs.rs_rtt_cnt++;  in tcp_rack_xmit_timer()
8660  * Collect new round-trip time estimate
8669 	if (rack->r_ctl.rack_rs.rs_flags & RACK_RTT_EMPTY)  in tcp_rack_xmit_timer_commit()
8672 	if (rack->r_ctl.rc_rate_sample_method == USE_RTT_LOW) {  in tcp_rack_xmit_timer_commit()
8674 		rtt = rack->r_ctl.rack_rs.rs_rtt_lowest;  in tcp_rack_xmit_timer_commit()
8675 	} else if (rack->r_ctl.rc_rate_sample_method == USE_RTT_HIGH) {  in tcp_rack_xmit_timer_commit()
8677 		rtt = rack->r_ctl.rack_rs.rs_rtt_highest;  in tcp_rack_xmit_timer_commit()
8678 	} else if (rack->r_ctl.rc_rate_sample_method == USE_RTT_AVG) {  in tcp_rack_xmit_timer_commit()
8680 		rtt = (int32_t)(rack->r_ctl.rack_rs.rs_rtt_tot /  in tcp_rack_xmit_timer_commit()
8681 				(uint64_t)rack->r_ctl.rack_rs.rs_rtt_cnt);  in tcp_rack_xmit_timer_commit()
8684 		panic("Unknown rtt variant %d", rack->r_ctl.rc_rate_sample_method);  in tcp_rack_xmit_timer_commit()
8690 	if (rack->rc_gp_rtt_set == 0) {  in tcp_rack_xmit_timer_commit()
8695 		rack->r_ctl.rc_gp_srtt = rack->r_ctl.rack_rs.rs_us_rtt;  in tcp_rack_xmit_timer_commit()
8696 		rack->rc_gp_rtt_set = 1;  in tcp_rack_xmit_timer_commit()
8697 	} else if (rack->r_ctl.rack_rs.confidence) {  in tcp_rack_xmit_timer_commit()
8699 		rack->r_ctl.rc_gp_srtt -= (rack->r_ctl.rc_gp_srtt/8);  in tcp_rack_xmit_timer_commit()
8700 		rack->r_ctl.rc_gp_srtt += rack->r_ctl.rack_rs.rs_us_rtt / 8;  in tcp_rack_xmit_timer_commit()
8702 	if (rack->r_ctl.rack_rs.confidence) {  in tcp_rack_xmit_timer_commit()
8707 		if (rack->r_ctl.rc_highest_us_rtt < rack->r_ctl.rack_rs.rs_us_rtt) {  in tcp_rack_xmit_timer_commit()
8708 			rack->r_ctl.rc_highest_us_rtt = rack->r_ctl.rack_rs.rs_us_rtt;  in tcp_rack_xmit_timer_commit()
8710 		if (rack->rc_highly_buffered == 0) {  in tcp_rack_xmit_timer_commit()
8716 			if ((rack->r_ctl.rc_highest_us_rtt / rack->r_ctl.rc_lowest_us_rtt) > rack_hbp_thresh) {  in tcp_rack_xmit_timer_commit()
8717 				rack_log_rtt_shrinks(rack, rack->r_ctl.rack_rs.rs_us_rtt,  in tcp_rack_xmit_timer_commit()
8718 						     rack->r_ctl.rc_highest_us_rtt,  in tcp_rack_xmit_timer_commit()
8719 						     rack->r_ctl.rc_lowest_us_rtt,  in tcp_rack_xmit_timer_commit()
8721 				rack->rc_highly_buffered = 1;  in tcp_rack_xmit_timer_commit()
8725 	if ((rack->r_ctl.rack_rs.confidence) ||  in tcp_rack_xmit_timer_commit()
8726 	    (rack->r_ctl.rack_rs.rs_us_rtrcnt == 1)) {  in tcp_rack_xmit_timer_commit()
8731 		rack->r_ctl.rc_last_us_rtt = rack->r_ctl.rack_rs.rs_us_rtt;  in tcp_rack_xmit_timer_commit()
8733 		if (rack->r_ctl.rc_lowest_us_rtt > rack->r_ctl.rack_rs.rs_us_rtt) {  in tcp_rack_xmit_timer_commit()
8734 			rack->r_ctl.rc_lowest_us_rtt = rack->r_ctl.rack_rs.rs_us_rtt;  in tcp_rack_xmit_timer_commit()
8735 			if (rack->r_ctl.rc_lowest_us_rtt == 0)  in tcp_rack_xmit_timer_commit()
8736 				rack->r_ctl.rc_lowest_us_rtt = 1;  in tcp_rack_xmit_timer_commit()
8739 	rack = (struct tcp_rack *)tp->t_fb_ptr;  in tcp_rack_xmit_timer_commit()
8740 	if (tp->t_srtt != 0) {  in tcp_rack_xmit_timer_commit()
8749 		delta = tp->t_srtt - rtt;  in tcp_rack_xmit_timer_commit()
8751 		tp->t_srtt -= (tp->t_srtt >> 3);  in tcp_rack_xmit_timer_commit()
8753 		tp->t_srtt += (rtt >> 3);  in tcp_rack_xmit_timer_commit()
8754 		if (tp->t_srtt <= 0)  in tcp_rack_xmit_timer_commit()
8755 			tp->t_srtt = 1;  in tcp_rack_xmit_timer_commit()
8758 			delta = -delta;  in tcp_rack_xmit_timer_commit()
8760 		tp->t_rttvar -= (tp->t_rttvar >> 3);  in tcp_rack_xmit_timer_commit()
8762 		tp->t_rttvar += (delta >> 3);  in tcp_rack_xmit_timer_commit()
8763 		if (tp->t_rttvar <= 0)  in tcp_rack_xmit_timer_commit()
8764 			tp->t_rttvar = 1;  in tcp_rack_xmit_timer_commit()
8767 		 * No rtt measurement yet - use the unsmoothed rtt. Set the  in tcp_rack_xmit_timer_commit()
8771 		tp->t_srtt = rtt;  in tcp_rack_xmit_timer_commit()
8772 		tp->t_rttvar = rtt >> 1;  in tcp_rack_xmit_timer_commit()
8774 	rack->rc_srtt_measure_made = 1;  in tcp_rack_xmit_timer_commit()
8776 	if (tp->t_rttupdated < UCHAR_MAX)  in tcp_rack_xmit_timer_commit()
8777 		tp->t_rttupdated++;  in tcp_rack_xmit_timer_commit()
8781 		stats_voi_update_abs_u32(tp->t_stats, VOI_TCP_RTT, imax(0, rtt));  in tcp_rack_xmit_timer_commit()
8787 		ms_rtt = (rtt + HPTS_USEC_IN_MSEC - 1) / HPTS_USEC_IN_MSEC;  in tcp_rack_xmit_timer_commit()
8788 		stats_voi_update_abs_u32(tp->t_stats, VOI_TCP_RTT, imax(0, ms_rtt));  in tcp_rack_xmit_timer_commit()
8794 		ms_rtt = (rack->r_ctl.rack_rs.rs_us_rtt + HPTS_USEC_IN_MSEC - 1) / HPTS_USEC_IN_MSEC;  in tcp_rack_xmit_timer_commit()
8795 		stats_voi_update_abs_u32(tp->t_stats, VOI_TCP_RTT, imax(0, ms_rtt));  in tcp_rack_xmit_timer_commit()
8798 		stats_voi_update_abs_u32(tp->t_stats, VOI_TCP_RTT, imax(0, rack->r_ctl.rack_rs.rs_us_rtt));  in tcp_rack_xmit_timer_commit()
8800 	stats_voi_update_abs_u32(tp->t_stats, VOI_TCP_PATHRTT, imax(0, rack->r_ctl.rack_rs.rs_us_rtt));  in tcp_rack_xmit_timer_commit()
8802 	rack->r_ctl.last_rcv_tstmp_for_rtt = tcp_tv_to_mssectick(&rack->r_ctl.act_rcv_time);  in tcp_rack_xmit_timer_commit()
8807 	 * tick of rounding and 1 extra tick because of +-1/2 tick  in tcp_rack_xmit_timer_commit()
8813 	tp->t_rxtshift = 0;  in tcp_rack_xmit_timer_commit()
8814 	RACK_TCPT_RANGESET(tp->t_rxtcur, RACK_REXMTVAL(tp),  in tcp_rack_xmit_timer_commit()
8815 		      max(rack_rto_min, rtt + 2), rack_rto_max, rack->r_ctl.timer_slop);  in tcp_rack_xmit_timer_commit()
8817 	tp->t_softerror = 0;  in tcp_rack_xmit_timer_commit()
8825 	 * Apply to filter the inbound us-rtt at us_cts.  in rack_apply_updated_usrtt()
8829 	old_rtt = get_filter_value_small(&rack->r_ctl.rc_gp_min_rtt);  in rack_apply_updated_usrtt()
8830 	apply_filter_min_small(&rack->r_ctl.rc_gp_min_rtt,  in rack_apply_updated_usrtt()
8840 		if ((old_rtt - us_rtt) > rack_min_rtt_movement) {  in rack_apply_updated_usrtt()
8842 			    rack->rc_gp_dyn_mul &&  in rack_apply_updated_usrtt()
8843 			    (rack->use_fixed_rate == 0) &&  in rack_apply_updated_usrtt()
8844 			    (rack->rc_always_pace)) {  in rack_apply_updated_usrtt()
8847 				 * to the time that we would have entered probe-rtt.  in rack_apply_updated_usrtt()
8849 				 * has entered probe-rtt. Lets go in now too.  in rack_apply_updated_usrtt()
8855 				if ((rack->in_probe_rtt == 0)  &&  in rack_apply_updated_usrtt()
8856 				    (rack->rc_skip_timely == 0) &&  in rack_apply_updated_usrtt()
8857 				    ((us_cts - rack->r_ctl.rc_lower_rtt_us_cts) >= (rack_time_between_probertt - val)))	{  in rack_apply_updated_usrtt()
8861 			rack->r_ctl.rc_lower_rtt_us_cts = us_cts;  in rack_apply_updated_usrtt()
8874 	if ((rsm->r_flags & RACK_ACKED) ||  in rack_update_rtt()
8875 	    (rsm->r_flags & RACK_WAS_ACKED))  in rack_update_rtt()
8878 	if (rsm->r_no_rtt_allowed) {  in rack_update_rtt()
8883 		if (SEQ_GT(th_ack, rsm->r_end)) {  in rack_update_rtt()
8884 			len_acked = rsm->r_end - rsm->r_start;  in rack_update_rtt()
8887 			len_acked = th_ack - rsm->r_start;  in rack_update_rtt()
8891 		len_acked = rsm->r_end - rsm->r_start;  in rack_update_rtt()
8894 	if (rsm->r_rtr_cnt == 1) {  in rack_update_rtt()
8896 		t = cts - (uint32_t)rsm->r_tim_lastsent[(rsm->r_rtr_cnt - 1)];  in rack_update_rtt()
8899 		if (!tp->t_rttlow || tp->t_rttlow > t)  in rack_update_rtt()
8900 			tp->t_rttlow = t;  in rack_update_rtt()
8901 		if (!rack->r_ctl.rc_rack_min_rtt ||  in rack_update_rtt()
8902 		    SEQ_LT(t, rack->r_ctl.rc_rack_min_rtt)) {  in rack_update_rtt()
8903 			rack->r_ctl.rc_rack_min_rtt = t;  in rack_update_rtt()
8904 			if (rack->r_ctl.rc_rack_min_rtt == 0) {  in rack_update_rtt()
8905 				rack->r_ctl.rc_rack_min_rtt = 1;  in rack_update_rtt()
8908 …if (TSTMP_GT(tcp_tv_to_usectick(&rack->r_ctl.act_rcv_time), rsm->r_tim_lastsent[(rsm->r_rtr_cnt-1)…  in rack_update_rtt()
8909 …us_rtt = tcp_tv_to_usectick(&rack->r_ctl.act_rcv_time) - (uint32_t)rsm->r_tim_lastsent[(rsm->r_rtr…  in rack_update_rtt()
8911 			us_rtt = tcp_get_usecs(NULL) - (uint32_t)rsm->r_tim_lastsent[(rsm->r_rtr_cnt-1)];  in rack_update_rtt()
8914 		if (CC_ALGO(tp)->rttsample != NULL) {  in rack_update_rtt()
8916 			CC_ALGO(tp)->rttsample(&tp->t_ccv, us_rtt, 1, rsm->r_fas);  in rack_update_rtt()
8918 		rack_apply_updated_usrtt(rack, us_rtt, tcp_tv_to_usectick(&rack->r_ctl.act_rcv_time));  in rack_update_rtt()
8920 			rack_log_rtt_sample_calc(rack, t, (uint32_t)rsm->r_tim_lastsent[(rsm->r_rtr_cnt - 1)], cts, 1);  in rack_update_rtt()
8921 			tcp_rack_xmit_timer(rack, t + 1, len_acked, us_rtt, 2 , rsm, rsm->r_rtr_cnt);  in rack_update_rtt()
8934 			 * When we are not app-limited then we see if  in rack_update_rtt()
8951 			if (rsm->r_flags & RACK_APP_LIMITED) {  in rack_update_rtt()
8956 			} else if (rack->app_limited_needs_set == 0) {  in rack_update_rtt()
8961 			rack_log_rtt_sample_calc(rack, t, (uint32_t)rsm->r_tim_lastsent[(rsm->r_rtr_cnt - 1)], cts, 2);  in rack_update_rtt()
8963 					    calc_conf, rsm, rsm->r_rtr_cnt);  in rack_update_rtt()
8965 		if ((rsm->r_flags & RACK_TLP) &&  in rack_update_rtt()
8966 		    (!IN_FASTRECOVERY(tp->t_flags))) {  in rack_update_rtt()
8968 			if (rack->r_ctl.rc_tlp_cwnd_reduce) {  in rack_update_rtt()
8972 		if ((rack->r_ctl.rc_rack_tmit_time == 0) ||  in rack_update_rtt()
8973 		    (SEQ_LT(rack->r_ctl.rc_rack_tmit_time,  in rack_update_rtt()
8974 			    (uint32_t)rsm->r_tim_lastsent[(rsm->r_rtr_cnt - 1)]))) {  in rack_update_rtt()
8976 			rack->r_ctl.rc_rack_tmit_time = (uint32_t)rsm->r_tim_lastsent[(rsm->r_rtr_cnt - 1)];  in rack_update_rtt()
8977 			if (rack->r_ctl.rc_rack_tmit_time == 0)  in rack_update_rtt()
8978 				rack->r_ctl.rc_rack_tmit_time = 1;  in rack_update_rtt()
8979 			rack->rc_rack_rtt = t;  in rack_update_rtt()
8988 	tp->t_rxtshift = 0;  in rack_update_rtt()
8989 	RACK_TCPT_RANGESET(tp->t_rxtcur, RACK_REXMTVAL(tp),  in rack_update_rtt()
8990 		      rack_rto_min, rack_rto_max, rack->r_ctl.timer_slop);  in rack_update_rtt()
8991 	tp->t_softerror = 0;  in rack_update_rtt()
8992 	if (to && (to->to_flags & TOF_TS) &&  in rack_update_rtt()
8994 	    (to->to_tsecr) &&  in rack_update_rtt()
8995 	    ((rsm->r_flags & RACK_OVERMAX) == 0)) {  in rack_update_rtt()
9000 		for (i = 0; i < rsm->r_rtr_cnt; i++) {  in rack_update_rtt()
9001 			if (rack_ts_to_msec(rsm->r_tim_lastsent[i]) == to->to_tsecr) {  in rack_update_rtt()
9002 				t = cts - (uint32_t)rsm->r_tim_lastsent[i];  in rack_update_rtt()
9005 				if (CC_ALGO(tp)->rttsample != NULL) {  in rack_update_rtt()
9013 					if (TSTMP_GT(tcp_tv_to_usectick(&rack->r_ctl.act_rcv_time), rsm->r_tim_lastsent[i]))  in rack_update_rtt()
9014 						us_rtt = tcp_tv_to_usectick(&rack->r_ctl.act_rcv_time) - (uint32_t)rsm->r_tim_lastsent[i];  in rack_update_rtt()
9016 						us_rtt = tcp_get_usecs(NULL) - (uint32_t)rsm->r_tim_lastsent[i];  in rack_update_rtt()
9017 					CC_ALGO(tp)->rttsample(&tp->t_ccv, us_rtt, 1, rsm->r_fas);  in rack_update_rtt()
9019 				if ((i + 1) < rsm->r_rtr_cnt) {  in rack_update_rtt()
9031 				if (!tp->t_rttlow || tp->t_rttlow > t)  in rack_update_rtt()
9032 					tp->t_rttlow = t;  in rack_update_rtt()
9033 				if (!rack->r_ctl.rc_rack_min_rtt || SEQ_LT(t, rack->r_ctl.rc_rack_min_rtt)) {  in rack_update_rtt()
9034 					rack->r_ctl.rc_rack_min_rtt = t;  in rack_update_rtt()
9035 					if (rack->r_ctl.rc_rack_min_rtt == 0) {  in rack_update_rtt()
9036 						rack->r_ctl.rc_rack_min_rtt = 1;  in rack_update_rtt()
9039 				if ((rack->r_ctl.rc_rack_tmit_time == 0) ||  in rack_update_rtt()
9040 				    (SEQ_LT(rack->r_ctl.rc_rack_tmit_time,  in rack_update_rtt()
9041 					    (uint32_t)rsm->r_tim_lastsent[(rsm->r_rtr_cnt - 1)]))) {  in rack_update_rtt()
9043 					rack->r_ctl.rc_rack_tmit_time = (uint32_t)rsm->r_tim_lastsent[(rsm->r_rtr_cnt - 1)];  in rack_update_rtt()
9044 					if (rack->r_ctl.rc_rack_tmit_time == 0)  in rack_update_rtt()
9045 						rack->r_ctl.rc_rack_tmit_time = 1;  in rack_update_rtt()
9046 					rack->rc_rack_rtt = t;  in rack_update_rtt()
9048 				rack_log_rtt_sample_calc(rack, t, (uint32_t)rsm->r_tim_lastsent[i], cts, 3);  in rack_update_rtt()
9050 						    rsm->r_rtr_cnt);  in rack_update_rtt()
9055 		if (tcp_bblogging_on(rack->rc_tp)) {  in rack_update_rtt()
9056 			for (i = 0; i < rsm->r_rtr_cnt; i++) {  in rack_update_rtt()
9057 				rack_log_rtt_sendmap(rack, i, rsm->r_tim_lastsent[i], to->to_tsecr);  in rack_update_rtt()
9065 		 * time-stamp since its not there or the time the peer last  in rack_update_rtt()
9066 		 * received a segment that moved forward its cum-ack point.  in rack_update_rtt()
9069 		i = rsm->r_rtr_cnt - 1;  in rack_update_rtt()
9070 		t = cts - (uint32_t)rsm->r_tim_lastsent[i];  in rack_update_rtt()
9073 		if (rack->r_ctl.rc_rack_min_rtt && SEQ_LT(t, rack->r_ctl.rc_rack_min_rtt)) {  in rack_update_rtt()
9078 			 * 6.2 Step 2 point 2 in the rack-draft so we  in rack_update_rtt()
9084 		} else if (rack->r_ctl.rc_rack_min_rtt) {  in rack_update_rtt()
9089 			if (!rack->r_ctl.rc_rack_min_rtt ||  in rack_update_rtt()
9090 			    SEQ_LT(t, rack->r_ctl.rc_rack_min_rtt)) {  in rack_update_rtt()
9091 				rack->r_ctl.rc_rack_min_rtt = t;  in rack_update_rtt()
9092 				if (rack->r_ctl.rc_rack_min_rtt == 0) {  in rack_update_rtt()
9093 					rack->r_ctl.rc_rack_min_rtt = 1;  in rack_update_rtt()
9096 			if ((rack->r_ctl.rc_rack_tmit_time == 0) ||  in rack_update_rtt()
9097 			    (SEQ_LT(rack->r_ctl.rc_rack_tmit_time,  in rack_update_rtt()
9098 				    (uint32_t)rsm->r_tim_lastsent[i]))) {  in rack_update_rtt()
9100 				rack->r_ctl.rc_rack_tmit_time = (uint32_t)rsm->r_tim_lastsent[i];  in rack_update_rtt()
9101 				if (rack->r_ctl.rc_rack_tmit_time == 0)  in rack_update_rtt()
9102 					rack->r_ctl.rc_rack_tmit_time = 1;  in rack_update_rtt()
9103 				rack->rc_rack_rtt = t;  in rack_update_rtt()
9125 	TAILQ_FOREACH_REVERSE_FROM(nrsm, &rack->r_ctl.rc_tmap,  in rack_log_sack_passed()
9131 		if (nrsm->r_flags & RACK_ACKED) {  in rack_log_sack_passed()
9139 		if (nrsm->r_flags & RACK_RWND_COLLAPSED) {  in rack_log_sack_passed()
9147 		if ((nrsm->r_flags & RACK_WAS_LOST) == 0) {  in rack_log_sack_passed()
9150 			exp = ((uint32_t)rsm->r_tim_lastsent[(rsm->r_rtr_cnt - 1)]) + thresh;  in rack_log_sack_passed()
9153 				nrsm->r_flags |= RACK_WAS_LOST;  in rack_log_sack_passed()
9154 				rack->r_ctl.rc_considered_lost += nrsm->r_end - nrsm->r_start;  in rack_log_sack_passed()
9157 		if (nrsm->r_flags & RACK_SACK_PASSED) {  in rack_log_sack_passed()
9165 		nrsm->r_flags |= RACK_SACK_PASSED;  in rack_log_sack_passed()
9166 		nrsm->r_flags &= ~RACK_WAS_SACKPASS;  in rack_log_sack_passed()
9180 	if ((tp->t_flags & TF_GPUTINPROG) &&  in rack_need_set_test()
9181 	    SEQ_GEQ(rsm->r_end, tp->gput_seq)) {  in rack_need_set_test()
9191 		if (rsm->r_rtr_cnt > 1) {  in rack_need_set_test()
9204 		seq = tp->gput_seq;  in rack_need_set_test()
9205 		ts = tp->gput_ts;  in rack_need_set_test()
9206 		rack->app_limited_needs_set = 0;  in rack_need_set_test()
9207 		tp->gput_ts = tcp_tv_to_usectick(&rack->r_ctl.act_rcv_time);  in rack_need_set_test()
9210 		    SEQ_GEQ(rsm->r_start, tp->gput_seq)) {  in rack_need_set_test()
9218 			tp->gput_seq = rsm->r_start;  in rack_need_set_test()
9221 		    SEQ_GEQ(rsm->r_end, tp->gput_seq)) {  in rack_need_set_test()
9233 			tp->gput_seq = rsm->r_end;  in rack_need_set_test()
9239 			 * way up to where this ack cum-ack moves  in rack_need_set_test()
9242 			if (SEQ_GT(th_ack, rsm->r_end))  in rack_need_set_test()
9243 				tp->gput_seq = th_ack;  in rack_need_set_test()
9245 				tp->gput_seq = rsm->r_end;  in rack_need_set_test()
9247 		if (SEQ_LT(tp->gput_seq, tp->snd_max))  in rack_need_set_test()
9248 			s_rsm = tqhash_find(rack->r_ctl.tqh, tp->gput_seq);  in rack_need_set_test()
9262 			rack->r_ctl.rc_gp_output_ts = s_rsm->r_tim_lastsent[0];  in rack_need_set_test()
9264 			/* If we hit here we have to have *not* sent tp->gput_seq */  in rack_need_set_test()
9265 			rack->r_ctl.rc_gp_output_ts = rsm->r_tim_lastsent[0];  in rack_need_set_test()
9267 			rack->app_limited_needs_set = 1;  in rack_need_set_test()
9269 		if (SEQ_GT(tp->gput_seq, tp->gput_ack)) {  in rack_need_set_test()
9271 			 * We moved beyond this guy's range, re-calculate  in rack_need_set_test()
9274 			if (rack->rc_gp_filled == 0) {  in rack_need_set_test()
9275 				tp->gput_ack = tp->gput_seq + max(rc_init_window(rack), (MIN_GP_WIN * ctf_fixed_maxseg(tp)));  in rack_need_set_test()
9277 				tp->gput_ack = tp->gput_seq + rack_get_measure_window(tp, rack);  in rack_need_set_test()
9284 		if ((rack->in_probe_rtt == 0) &&  in rack_need_set_test()
9285 		    (rack->measure_saw_probe_rtt) &&  in rack_need_set_test()
9286 		    (SEQ_GEQ(tp->gput_seq, rack->r_ctl.rc_probertt_sndmax_atexit)))  in rack_need_set_test()
9287 			rack->measure_saw_probe_rtt = 0;  in rack_need_set_test()
9288 		rack_log_pacing_delay_calc(rack, ts, tp->gput_ts,  in rack_need_set_test()
9289 					   seq, tp->gput_seq,  in rack_need_set_test()
9290 					   (((uint64_t)rack->r_ctl.rc_app_limited_cnt << 32) |  in rack_need_set_test()
9291 					    (uint64_t)rack->r_ctl.rc_gp_output_ts),  in rack_need_set_test()
9293 		if (rack->rc_gp_filled &&  in rack_need_set_test()
9294 		    ((tp->gput_ack - tp->gput_seq) <  in rack_need_set_test()
9300 			if (ideal_amount > sbavail(&tptosocket(tp)->so_snd)) {  in rack_need_set_test()
9307 				tp->t_flags &= ~TF_GPUTINPROG;  in rack_need_set_test()
9308 				rack_log_pacing_delay_calc(rack, tp->gput_ack, tp->gput_seq,  in rack_need_set_test()
9310 							   (((uint64_t)rack->r_ctl.rc_app_limited_cnt << 32) |  in rack_need_set_test()
9311 							    (uint64_t)rack->r_ctl.rc_gp_output_ts),  in rack_need_set_test()
9317 				tp->gput_ack = tp->gput_seq + ideal_amount;  in rack_need_set_test()
9321 		rack_log_gpset(rack, tp->gput_ack, 0, 0, line, 2, rsm);  in rack_need_set_test()
9328 	if (SEQ_LT(rsm->r_end, rack->r_ctl.last_tlp_acked_start)) {  in is_rsm_inside_declared_tlp_block()
9332 	if (SEQ_GT(rsm->r_start, rack->r_ctl.last_tlp_acked_end)) {  in is_rsm_inside_declared_tlp_block()
9336 	/* It has to be a sub-part of the original TLP recorded */  in is_rsm_inside_declared_tlp_block()
9352 	start = sack->start;  in rack_proc_sack_blk()
9353 	end = sack->end;  in rack_proc_sack_blk()
9358 	    (SEQ_LT(end, rsm->r_start)) ||  in rack_proc_sack_blk()
9359 	    (SEQ_GEQ(start, rsm->r_end)) ||  in rack_proc_sack_blk()
9360 	    (SEQ_LT(start, rsm->r_start))) {  in rack_proc_sack_blk()
9366 		rsm = tqhash_find(rack->r_ctl.tqh, start);  in rack_proc_sack_blk()
9373 	if (rsm->r_start != start) {  in rack_proc_sack_blk()
9374 		if ((rsm->r_flags & RACK_ACKED) == 0) {  in rack_proc_sack_blk()
9379 			if ((rsm->r_flags & RACK_TLP) &&  in rack_proc_sack_blk()
9380 			    (rsm->r_rtr_cnt > 1)) {  in rack_proc_sack_blk()
9385 				if (rack->rc_last_tlp_acked_set &&  in rack_proc_sack_blk()
9393 					rack_log_dsack_event(rack, 10, __LINE__, rsm->r_start, rsm->r_end);  in rack_proc_sack_blk()
9397 					if (SEQ_LT(rsm->r_start, rack->r_ctl.last_tlp_acked_start)) {  in rack_proc_sack_blk()
9398 						rack->r_ctl.last_tlp_acked_start = rsm->r_start;  in rack_proc_sack_blk()
9399 						rack_log_dsack_event(rack, 11, __LINE__, rack->r_ctl.last_tlp_acked_start,  in rack_proc_sack_blk()
9400 								     rack->r_ctl.last_tlp_acked_end);  in rack_proc_sack_blk()
9402 					if (SEQ_GT(rsm->r_end, rack->r_ctl.last_tlp_acked_end)) {  in rack_proc_sack_blk()
9403 						rack->r_ctl.last_tlp_acked_end = rsm->r_end;  in rack_proc_sack_blk()
9404 						rack_log_dsack_event(rack, 11, __LINE__, rack->r_ctl.last_tlp_acked_start,  in rack_proc_sack_blk()
9405 								     rack->r_ctl.last_tlp_acked_end);  in rack_proc_sack_blk()
9408 					rack->r_ctl.last_tlp_acked_start = rsm->r_start;  in rack_proc_sack_blk()
9409 					rack->r_ctl.last_tlp_acked_end = rsm->r_end;  in rack_proc_sack_blk()
9410 					rack->rc_last_tlp_past_cumack = 0;  in rack_proc_sack_blk()
9411 					rack->rc_last_tlp_acked_set = 1;  in rack_proc_sack_blk()
9412 					rack_log_dsack_event(rack, 8, __LINE__, rsm->r_start, rsm->r_end);  in rack_proc_sack_blk()
9419 			 * rsm        |--------------|  in rack_proc_sack_blk()
9420 			 * sackblk        |------->  in rack_proc_sack_blk()
9422 			 *     rsm    |---|  in rack_proc_sack_blk()
9424 			 *     nrsm       |----------|  in rack_proc_sack_blk()
9436 			next = tqhash_next(rack->r_ctl.tqh, rsm);  in rack_proc_sack_blk()
9438 			    (rsm->bindex == next->bindex) &&  in rack_proc_sack_blk()
9439 			    ((rsm->r_flags & RACK_STRADDLE) == 0) &&  in rack_proc_sack_blk()
9440 			    ((next->r_flags & RACK_STRADDLE) == 0) &&  in rack_proc_sack_blk()
9441 			    ((rsm->r_flags & RACK_IS_PCM) == 0) &&  in rack_proc_sack_blk()
9442 			    ((next->r_flags & RACK_IS_PCM) == 0) &&  in rack_proc_sack_blk()
9443 			    (rsm->r_flags & RACK_IN_GP_WIN) &&  in rack_proc_sack_blk()
9444 			    (next->r_flags & RACK_IN_GP_WIN))  in rack_proc_sack_blk()
9449 			    (next->r_flags & RACK_ACKED) &&  in rack_proc_sack_blk()
9450 			    SEQ_GEQ(end, next->r_start)) {  in rack_proc_sack_blk()
9457 				 *  rsm     |------------|             (not-acked)  in rack_proc_sack_blk()
9458 				 *  next                 |-----------| (acked)  in rack_proc_sack_blk()
9459 				 *  sackblk        |-------->  in rack_proc_sack_blk()
9461 				 *  rsm     |------|                   (not-acked)  in rack_proc_sack_blk()
9462 				 *  next           |-----------------| (acked)  in rack_proc_sack_blk()
9463 				 *  nrsm           |-----|  in rack_proc_sack_blk()
9471 				tqhash_update_end(rack->r_ctl.tqh, rsm, start);  in rack_proc_sack_blk()
9472 				next->r_start = start;  in rack_proc_sack_blk()
9473  				rsm->r_flags |= RACK_SHUFFLED;  in rack_proc_sack_blk()
9474 				next->r_flags |= RACK_SHUFFLED;  in rack_proc_sack_blk()
9475 				/* Now we must adjust back where next->m is */  in rack_proc_sack_blk()
9495 				if (next->r_tim_lastsent[(next->r_rtr_cnt-1)] <  in rack_proc_sack_blk()
9496 				    nrsm->r_tim_lastsent[(nrsm->r_rtr_cnt-1)])  in rack_proc_sack_blk()
9497 					next->r_tim_lastsent[(next->r_rtr_cnt-1)] = nrsm->r_tim_lastsent[(nrsm->r_rtr_cnt-1)];  in rack_proc_sack_blk()
9501 				if (next->r_ack_arrival <  in rack_proc_sack_blk()
9502 				    rack_to_usec_ts(&rack->r_ctl.act_rcv_time))  in rack_proc_sack_blk()
9503 					next->r_ack_arrival = rack_to_usec_ts(&rack->r_ctl.act_rcv_time);  in rack_proc_sack_blk()
9508 				rsm->r_dupack = 0;  in rack_proc_sack_blk()
9509 				rsm->r_just_ret = 0;  in rack_proc_sack_blk()
9512 				nrsm->r_start = start;  in rack_proc_sack_blk()
9515 				if (rack->app_limited_needs_set)  in rack_proc_sack_blk()
9516 					rack_need_set_test(tp, rack, nrsm, tp->snd_una, __LINE__, RACK_USE_END);  in rack_proc_sack_blk()
9517 				changed += (nrsm->r_end - nrsm->r_start);  in rack_proc_sack_blk()
9518 				rack->r_ctl.rc_sacked += (nrsm->r_end - nrsm->r_start);  in rack_proc_sack_blk()
9519 				if (rsm->r_flags & RACK_WAS_LOST) {  in rack_proc_sack_blk()
9522 					my_chg = (nrsm->r_end - nrsm->r_start);  in rack_proc_sack_blk()
9523 					KASSERT((rack->r_ctl.rc_considered_lost >= my_chg),  in rack_proc_sack_blk()
9525 					if (my_chg <= rack->r_ctl.rc_considered_lost)  in rack_proc_sack_blk()
9526 						rack->r_ctl.rc_considered_lost -= my_chg;  in rack_proc_sack_blk()
9528 						rack->r_ctl.rc_considered_lost = 0;  in rack_proc_sack_blk()
9530 				if (nrsm->r_flags & RACK_SACK_PASSED) {  in rack_proc_sack_blk()
9531 					rack->r_ctl.rc_reorder_ts = cts;  in rack_proc_sack_blk()
9532 					if (rack->r_ctl.rc_reorder_ts == 0)  in rack_proc_sack_blk()
9533 						rack->r_ctl.rc_reorder_ts = 1;  in rack_proc_sack_blk()
9537 				 * one left un-acked) to the next one  in rack_proc_sack_blk()
9540 				 * sack-passed on rsm (The one passed in  in rack_proc_sack_blk()
9545 				if (rsm->r_in_tmap) {  in rack_proc_sack_blk()
9551 					if (nrsm && nrsm->r_in_tmap)  in rack_proc_sack_blk()
9555 				if (SEQ_LT(end, next->r_end) ||  in rack_proc_sack_blk()
9556 				    (end == next->r_end)) {  in rack_proc_sack_blk()
9563 				start = next->r_end;  in rack_proc_sack_blk()
9564 				rsm = tqhash_next(rack->r_ctl.tqh, next);  in rack_proc_sack_blk()
9572 				 *  rsm      |--------|  in rack_proc_sack_blk()
9573 				 *  sackblk       |----->  in rack_proc_sack_blk()
9578 				 *  rsm      |----|  in rack_proc_sack_blk()
9579 				 *  sackblk       |----->  in rack_proc_sack_blk()
9580 				 *  nrsm          |---|  in rack_proc_sack_blk()
9595 				rsm->r_just_ret = 0;  in rack_proc_sack_blk()
9597 				(void)tqhash_insert(rack->r_ctl.tqh, nrsm);  in rack_proc_sack_blk()
9599 				if ((insret = tqhash_insert(rack->r_ctl.tqh, nrsm)) != 0) {  in rack_proc_sack_blk()
9604 				if (rsm->r_in_tmap) {  in rack_proc_sack_blk()
9605 					TAILQ_INSERT_AFTER(&rack->r_ctl.rc_tmap, rsm, nrsm, r_tnext);  in rack_proc_sack_blk()
9606 					nrsm->r_in_tmap = 1;  in rack_proc_sack_blk()
9609 				rsm->r_flags &= (~RACK_HAS_FIN);  in rack_proc_sack_blk()
9616 			if (end == rsm->r_end) {  in rack_proc_sack_blk()
9618 				rsm = tqhash_next(rack->r_ctl.tqh, rsm);  in rack_proc_sack_blk()
9620 			} else if (SEQ_LT(end, rsm->r_end)) {  in rack_proc_sack_blk()
9622 				rsm = tqhash_next(rack->r_ctl.tqh, rsm);  in rack_proc_sack_blk()
9630 				start = rsm->r_end;  in rack_proc_sack_blk()
9631 				rsm = tqhash_next(rack->r_ctl.tqh, rsm);  in rack_proc_sack_blk()
9637 	if (SEQ_GEQ(end, rsm->r_end)) {  in rack_proc_sack_blk()
9641 		 *  rsm ---                 |-----|  in rack_proc_sack_blk()
9642 		 *  end                     |-----|  in rack_proc_sack_blk()
9644 		 *  end                     |---------|  in rack_proc_sack_blk()
9646 		if ((rsm->r_flags & RACK_ACKED) == 0) {  in rack_proc_sack_blk()
9650 			if ((rsm->r_flags & RACK_TLP) &&  in rack_proc_sack_blk()
9651 			    (rsm->r_rtr_cnt > 1)) {  in rack_proc_sack_blk()
9656 				if (rack->rc_last_tlp_acked_set &&  in rack_proc_sack_blk()
9663 					rack_log_dsack_event(rack, 10, __LINE__, rsm->r_start, rsm->r_end);  in rack_proc_sack_blk()
9667 					if (SEQ_LT(rsm->r_start, rack->r_ctl.last_tlp_acked_start)) {  in rack_proc_sack_blk()
9668 						rack->r_ctl.last_tlp_acked_start = rsm->r_start;  in rack_proc_sack_blk()
9669 						rack_log_dsack_event(rack, 11, __LINE__, rack->r_ctl.last_tlp_acked_start,  in rack_proc_sack_blk()
9670 								     rack->r_ctl.last_tlp_acked_end);  in rack_proc_sack_blk()
9672 					if (SEQ_GT(rsm->r_end, rack->r_ctl.last_tlp_acked_end)) {  in rack_proc_sack_blk()
9673 						rack->r_ctl.last_tlp_acked_end = rsm->r_end;  in rack_proc_sack_blk()
9674 						rack_log_dsack_event(rack, 11, __LINE__, rack->r_ctl.last_tlp_acked_start,  in rack_proc_sack_blk()
9675 								     rack->r_ctl.last_tlp_acked_end);  in rack_proc_sack_blk()
9678 					rack->r_ctl.last_tlp_acked_start = rsm->r_start;  in rack_proc_sack_blk()
9679 					rack->r_ctl.last_tlp_acked_end = rsm->r_end;  in rack_proc_sack_blk()
9680 					rack->rc_last_tlp_past_cumack = 0;  in rack_proc_sack_blk()
9681 					rack->rc_last_tlp_acked_set = 1;  in rack_proc_sack_blk()
9682 					rack_log_dsack_event(rack, 8, __LINE__, rsm->r_start, rsm->r_end);  in rack_proc_sack_blk()
9686 			changed += (rsm->r_end - rsm->r_start);  in rack_proc_sack_blk()
9688 			if (rsm->r_flags & RACK_WAS_LOST) {  in rack_proc_sack_blk()
9691 				my_chg = (rsm->r_end - rsm->r_start);  in rack_proc_sack_blk()
9692 				rsm->r_flags &= ~RACK_WAS_LOST;  in rack_proc_sack_blk()
9693 				KASSERT((rack->r_ctl.rc_considered_lost >= my_chg),  in rack_proc_sack_blk()
9695 				if (my_chg <= rack->r_ctl.rc_considered_lost)  in rack_proc_sack_blk()
9696 					rack->r_ctl.rc_considered_lost -= my_chg;  in rack_proc_sack_blk()
9698 					rack->r_ctl.rc_considered_lost = 0;  in rack_proc_sack_blk()
9700 			rack->r_ctl.rc_sacked += (rsm->r_end - rsm->r_start);  in rack_proc_sack_blk()
9701 			if (rsm->r_in_tmap) /* should be true */  in rack_proc_sack_blk()
9704 			if (rsm->r_flags & RACK_SACK_PASSED) {  in rack_proc_sack_blk()
9705 				rsm->r_flags &= ~RACK_SACK_PASSED;  in rack_proc_sack_blk()
9706 				rack->r_ctl.rc_reorder_ts = cts;  in rack_proc_sack_blk()
9707 				if (rack->r_ctl.rc_reorder_ts == 0)  in rack_proc_sack_blk()
9708 					rack->r_ctl.rc_reorder_ts = 1;  in rack_proc_sack_blk()
9710 			if (rack->app_limited_needs_set)  in rack_proc_sack_blk()
9711 				rack_need_set_test(tp, rack, rsm, tp->snd_una, __LINE__, RACK_USE_END);  in rack_proc_sack_blk()
9712 			rsm->r_ack_arrival = rack_to_usec_ts(&rack->r_ctl.act_rcv_time);  in rack_proc_sack_blk()
9713 			rsm->r_flags |= RACK_ACKED;  in rack_proc_sack_blk()
9714 			rack_update_pcm_ack(rack, 0, rsm->r_start, rsm->r_end);  in rack_proc_sack_blk()
9715 			if (rsm->r_in_tmap) {  in rack_proc_sack_blk()
9716 				TAILQ_REMOVE(&rack->r_ctl.rc_tmap, rsm, r_tnext);  in rack_proc_sack_blk()
9717 				rsm->r_in_tmap = 0;  in rack_proc_sack_blk()
9723 		if (end == rsm->r_end) {  in rack_proc_sack_blk()
9724 			/* This block only - done, setup for next */  in rack_proc_sack_blk()
9731 		nrsm = tqhash_next(rack->r_ctl.tqh, rsm);  in rack_proc_sack_blk()
9732 		start = rsm->r_end;  in rack_proc_sack_blk()
9741 	 *  rsm ---                 |-----|  in rack_proc_sack_blk()
9742 	 *  end                     |--|  in rack_proc_sack_blk()
9744 	if ((rsm->r_flags & RACK_ACKED) == 0) {  in rack_proc_sack_blk()
9748 		if ((rsm->r_flags & RACK_TLP) &&  in rack_proc_sack_blk()
9749 		    (rsm->r_rtr_cnt > 1)) {  in rack_proc_sack_blk()
9754 			if (rack->rc_last_tlp_acked_set &&  in rack_proc_sack_blk()
9761 				rack_log_dsack_event(rack, 10, __LINE__, rsm->r_start, rsm->r_end);  in rack_proc_sack_blk()
9765 				if (SEQ_LT(rsm->r_start, rack->r_ctl.last_tlp_acked_start)) {  in rack_proc_sack_blk()
9766 					rack->r_ctl.last_tlp_acked_start = rsm->r_start;  in rack_proc_sack_blk()
9767 					rack_log_dsack_event(rack, 11, __LINE__, rack->r_ctl.last_tlp_acked_start,  in rack_proc_sack_blk()
9768 							     rack->r_ctl.last_tlp_acked_end);  in rack_proc_sack_blk()
9770 				if (SEQ_GT(rsm->r_end, rack->r_ctl.last_tlp_acked_end)) {  in rack_proc_sack_blk()
9771 					rack->r_ctl.last_tlp_acked_end = rsm->r_end;  in rack_proc_sack_blk()
9772 					rack_log_dsack_event(rack, 11, __LINE__, rack->r_ctl.last_tlp_acked_start,  in rack_proc_sack_blk()
9773 							     rack->r_ctl.last_tlp_acked_end);  in rack_proc_sack_blk()
9776 				rack->r_ctl.last_tlp_acked_start = rsm->r_start;  in rack_proc_sack_blk()
9777 				rack->r_ctl.last_tlp_acked_end = rsm->r_end;  in rack_proc_sack_blk()
9778 				rack->rc_last_tlp_past_cumack = 0;  in rack_proc_sack_blk()
9779 				rack->rc_last_tlp_acked_set = 1;  in rack_proc_sack_blk()
9780 				rack_log_dsack_event(rack, 8, __LINE__, rsm->r_start, rsm->r_end);  in rack_proc_sack_blk()
9788 		prev = tqhash_prev(rack->r_ctl.tqh, rsm);  in rack_proc_sack_blk()
9790 		    (rsm->bindex == prev->bindex) &&  in rack_proc_sack_blk()
9791 		    ((rsm->r_flags & RACK_STRADDLE) == 0) &&  in rack_proc_sack_blk()
9792 		    ((prev->r_flags & RACK_STRADDLE) == 0) &&  in rack_proc_sack_blk()
9793 		    ((rsm->r_flags & RACK_IS_PCM) == 0) &&  in rack_proc_sack_blk()
9794 		    ((prev->r_flags & RACK_IS_PCM) == 0) &&  in rack_proc_sack_blk()
9795 		    (rsm->r_flags & RACK_IN_GP_WIN) &&  in rack_proc_sack_blk()
9796 		    (prev->r_flags & RACK_IN_GP_WIN))  in rack_proc_sack_blk()
9801 		    (prev->r_flags & RACK_ACKED)) {  in rack_proc_sack_blk()
9804 			 * in place and span from (rsm->r_start = end) to rsm->r_end.  in rack_proc_sack_blk()
9806 			 * to prev->r_end <- end.  in rack_proc_sack_blk()
9808 			 *   prev     |--------|         (acked)  in rack_proc_sack_blk()
9809 			 *   rsm               |-------| (non-acked)  in rack_proc_sack_blk()
9810 			 *   sackblk           |-|  in rack_proc_sack_blk()
9812 			 *   prev     |----------|       (acked)  in rack_proc_sack_blk()
9813 			 *   rsm                 |-----| (non-acked)  in rack_proc_sack_blk()
9814 			 *   nrsm              |-| (temporary)  in rack_proc_sack_blk()
9821 			tqhash_update_end(rack->r_ctl.tqh, prev, end);  in rack_proc_sack_blk()
9822 			rsm->r_start = end;  in rack_proc_sack_blk()
9823 			rsm->r_flags |= RACK_SHUFFLED;  in rack_proc_sack_blk()
9824 			prev->r_flags |= RACK_SHUFFLED;  in rack_proc_sack_blk()
9829 			nrsm->r_end = end;  in rack_proc_sack_blk()
9830 			rsm->r_dupack = 0;  in rack_proc_sack_blk()
9849 			if(prev->r_tim_lastsent[(prev->r_rtr_cnt-1)] <  in rack_proc_sack_blk()
9850 			   nrsm->r_tim_lastsent[(nrsm->r_rtr_cnt-1)]) {  in rack_proc_sack_blk()
9851 				prev->r_tim_lastsent[(prev->r_rtr_cnt-1)] = nrsm->r_tim_lastsent[(rsm->r_rtr_cnt-1)];  in rack_proc_sack_blk()
9857 			if(prev->r_ack_arrival <  in rack_proc_sack_blk()
9858 			   rack_to_usec_ts(&rack->r_ctl.act_rcv_time))  in rack_proc_sack_blk()
9859 				prev->r_ack_arrival = rack_to_usec_ts(&rack->r_ctl.act_rcv_time);  in rack_proc_sack_blk()
9874 			if (rack->app_limited_needs_set)  in rack_proc_sack_blk()
9875 				rack_need_set_test(tp, rack, nrsm, tp->snd_una, __LINE__, RACK_USE_END);  in rack_proc_sack_blk()
9876 			changed += (nrsm->r_end - nrsm->r_start);  in rack_proc_sack_blk()
9877 			rack->r_ctl.rc_sacked += (nrsm->r_end - nrsm->r_start);  in rack_proc_sack_blk()
9878 			if (rsm->r_flags & RACK_WAS_LOST) {  in rack_proc_sack_blk()
9881 				my_chg = (nrsm->r_end - nrsm->r_start);  in rack_proc_sack_blk()
9882 				KASSERT((rack->r_ctl.rc_considered_lost >= my_chg),  in rack_proc_sack_blk()
9884 				if (my_chg <= rack->r_ctl.rc_considered_lost)  in rack_proc_sack_blk()
9885 					rack->r_ctl.rc_considered_lost -= my_chg;  in rack_proc_sack_blk()
9887 					rack->r_ctl.rc_considered_lost = 0;  in rack_proc_sack_blk()
9889 			if (nrsm->r_flags & RACK_SACK_PASSED) {  in rack_proc_sack_blk()
9890 				rack->r_ctl.rc_reorder_ts = cts;  in rack_proc_sack_blk()
9891 				if (rack->r_ctl.rc_reorder_ts == 0)  in rack_proc_sack_blk()
9892 					rack->r_ctl.rc_reorder_ts = 1;  in rack_proc_sack_blk()
9908 			if ((rsm->r_flags & RACK_TLP) &&  in rack_proc_sack_blk()
9909 			    (rsm->r_rtr_cnt > 1)) {  in rack_proc_sack_blk()
9914 				if (rack->rc_last_tlp_acked_set &&  in rack_proc_sack_blk()
9921 					rack_log_dsack_event(rack, 10, __LINE__, rsm->r_start, rsm->r_end);  in rack_proc_sack_blk()
9925 					if (SEQ_LT(rsm->r_start, rack->r_ctl.last_tlp_acked_start)) {  in rack_proc_sack_blk()
9926 						rack->r_ctl.last_tlp_acked_start = rsm->r_start;  in rack_proc_sack_blk()
9927 						rack_log_dsack_event(rack, 11, __LINE__, rack->r_ctl.last_tlp_acked_start,  in rack_proc_sack_blk()
9928 								     rack->r_ctl.last_tlp_acked_end);  in rack_proc_sack_blk()
9930 					if (SEQ_GT(rsm->r_end, rack->r_ctl.last_tlp_acked_end)) {  in rack_proc_sack_blk()
9931 						rack->r_ctl.last_tlp_acked_end = rsm->r_end;  in rack_proc_sack_blk()
9932 						rack_log_dsack_event(rack, 11, __LINE__, rack->r_ctl.last_tlp_acked_start,  in rack_proc_sack_blk()
9933 								     rack->r_ctl.last_tlp_acked_end);  in rack_proc_sack_blk()
9936 					rack->r_ctl.last_tlp_acked_start = rsm->r_start;  in rack_proc_sack_blk()
9937 					rack->r_ctl.last_tlp_acked_end = rsm->r_end;  in rack_proc_sack_blk()
9938 					rack->rc_last_tlp_acked_set = 1;  in rack_proc_sack_blk()
9939 					rack->rc_last_tlp_past_cumack = 0;  in rack_proc_sack_blk()
9940 					rack_log_dsack_event(rack, 8, __LINE__, rsm->r_start, rsm->r_end);  in rack_proc_sack_blk()
9945 			 * nrsm->r_start = end;  in rack_proc_sack_blk()
9946 			 * nrsm->r_end = rsm->r_end;  in rack_proc_sack_blk()
9947 			 * which is un-acked.  in rack_proc_sack_blk()
9949 			 * rsm->r_end = nrsm->r_start;  in rack_proc_sack_blk()
9950 			 * i.e. the remaining un-acked  in rack_proc_sack_blk()
9955 			 * rsm      |----------| (not acked)  in rack_proc_sack_blk()
9956 			 * sackblk  |---|  in rack_proc_sack_blk()
9958 			 * rsm      |---|         (acked)  in rack_proc_sack_blk()
9959 			 * nrsm         |------|  (not acked)  in rack_proc_sack_blk()
9963 			rsm->r_flags &= (~RACK_HAS_FIN);  in rack_proc_sack_blk()
9964 			rsm->r_just_ret = 0;  in rack_proc_sack_blk()
9966 			(void)tqhash_insert(rack->r_ctl.tqh, nrsm);  in rack_proc_sack_blk()
9968 			if ((insret = tqhash_insert(rack->r_ctl.tqh, nrsm)) != 0) {  in rack_proc_sack_blk()
9973 			if (rsm->r_in_tmap) {  in rack_proc_sack_blk()
9974 				TAILQ_INSERT_AFTER(&rack->r_ctl.rc_tmap, rsm, nrsm, r_tnext);  in rack_proc_sack_blk()
9975 				nrsm->r_in_tmap = 1;  in rack_proc_sack_blk()
9977 			nrsm->r_dupack = 0;  in rack_proc_sack_blk()
9980 			changed += (rsm->r_end - rsm->r_start);  in rack_proc_sack_blk()
9981 			if (rsm->r_flags & RACK_WAS_LOST) {  in rack_proc_sack_blk()
9984 				my_chg = (rsm->r_end - rsm->r_start);  in rack_proc_sack_blk()
9985 				rsm->r_flags &= ~RACK_WAS_LOST;  in rack_proc_sack_blk()
9986 				KASSERT((rack->r_ctl.rc_considered_lost >= my_chg),  in rack_proc_sack_blk()
9988 				if (my_chg <= rack->r_ctl.rc_considered_lost)  in rack_proc_sack_blk()
9989 					rack->r_ctl.rc_considered_lost -= my_chg;  in rack_proc_sack_blk()
9991 					rack->r_ctl.rc_considered_lost = 0;  in rack_proc_sack_blk()
9993 			rack->r_ctl.rc_sacked += (rsm->r_end - rsm->r_start);  in rack_proc_sack_blk()
9995 			if (rsm->r_in_tmap) /* should be true */  in rack_proc_sack_blk()
9998 			if (rsm->r_flags & RACK_SACK_PASSED) {  in rack_proc_sack_blk()
9999 				rsm->r_flags &= ~RACK_SACK_PASSED;  in rack_proc_sack_blk()
10000 				rack->r_ctl.rc_reorder_ts = cts;  in rack_proc_sack_blk()
10001 				if (rack->r_ctl.rc_reorder_ts == 0)  in rack_proc_sack_blk()
10002 					rack->r_ctl.rc_reorder_ts = 1;  in rack_proc_sack_blk()
10004 			if (rack->app_limited_needs_set)  in rack_proc_sack_blk()
10005 				rack_need_set_test(tp, rack, rsm, tp->snd_una, __LINE__, RACK_USE_END);  in rack_proc_sack_blk()
10006 			rsm->r_ack_arrival = rack_to_usec_ts(&rack->r_ctl.act_rcv_time);  in rack_proc_sack_blk()
10007 			rsm->r_flags |= RACK_ACKED;  in rack_proc_sack_blk()
10008 			rack_update_pcm_ack(rack, 0, rsm->r_start, rsm->r_end);  in rack_proc_sack_blk()
10010 			if (rsm->r_in_tmap) {  in rack_proc_sack_blk()
10011 				TAILQ_REMOVE(&rack->r_ctl.rc_tmap, rsm, r_tnext);  in rack_proc_sack_blk()
10012 				rsm->r_in_tmap = 0;  in rack_proc_sack_blk()
10023 	    ((rsm->r_flags & RACK_TLP) == 0) &&  in rack_proc_sack_blk()
10024 	    (rsm->r_flags & RACK_ACKED)) {  in rack_proc_sack_blk()
10030 		next = tqhash_next(rack->r_ctl.tqh, rsm);  in rack_proc_sack_blk()
10032 			if (next->r_flags & RACK_TLP)  in rack_proc_sack_blk()
10035 			if ((next->r_flags & RACK_IN_GP_WIN) &&  in rack_proc_sack_blk()
10036 			    ((rsm->r_flags & RACK_IN_GP_WIN) == 0)) {  in rack_proc_sack_blk()
10039 			if ((rsm->r_flags & RACK_IN_GP_WIN) &&  in rack_proc_sack_blk()
10040 			    ((next->r_flags & RACK_IN_GP_WIN) == 0)) {  in rack_proc_sack_blk()
10043 			if (rsm->bindex != next->bindex)  in rack_proc_sack_blk()
10045 			if (rsm->r_flags & RACK_STRADDLE)  in rack_proc_sack_blk()
10047 			if (rsm->r_flags & RACK_IS_PCM)  in rack_proc_sack_blk()
10049 			if (next->r_flags & RACK_STRADDLE)  in rack_proc_sack_blk()
10051 			if (next->r_flags & RACK_IS_PCM)  in rack_proc_sack_blk()
10053 			if (next->r_flags & RACK_ACKED) {  in rack_proc_sack_blk()
10056 				next = tqhash_next(rack->r_ctl.tqh, rsm);  in rack_proc_sack_blk()
10061 		prev = tqhash_prev(rack->r_ctl.tqh, rsm);  in rack_proc_sack_blk()
10063 			if (prev->r_flags & RACK_TLP)  in rack_proc_sack_blk()
10066 			if ((prev->r_flags & RACK_IN_GP_WIN) &&  in rack_proc_sack_blk()
10067 			    ((rsm->r_flags & RACK_IN_GP_WIN) == 0)) {  in rack_proc_sack_blk()
10070 			if ((rsm->r_flags & RACK_IN_GP_WIN) &&  in rack_proc_sack_blk()
10071 			    ((prev->r_flags & RACK_IN_GP_WIN) == 0)) {  in rack_proc_sack_blk()
10074 			if (rsm->bindex != prev->bindex)  in rack_proc_sack_blk()
10076 			if (rsm->r_flags & RACK_STRADDLE)  in rack_proc_sack_blk()
10078 			if (rsm->r_flags & RACK_IS_PCM)  in rack_proc_sack_blk()
10080 			if (prev->r_flags & RACK_STRADDLE)  in rack_proc_sack_blk()
10082 			if (prev->r_flags & RACK_IS_PCM)  in rack_proc_sack_blk()
10084 			if (prev->r_flags & RACK_ACKED) {  in rack_proc_sack_blk()
10087 				prev = tqhash_prev(rack->r_ctl.tqh, rsm);  in rack_proc_sack_blk()
10098 	nrsm = tqhash_find(rack->r_ctl.tqh, end);  in rack_proc_sack_blk()
10099 	*prsm = rack->r_ctl.rc_sacklast = nrsm;  in rack_proc_sack_blk()
10109 	while (rsm && (rsm->r_flags & RACK_ACKED)) {  in rack_peer_reneges()
10111 		rack->r_ctl.rc_sacked -= (rsm->r_end - rsm->r_start);  in rack_peer_reneges()
10113 		if (rsm->r_in_tmap) {  in rack_peer_reneges()
10115 			      rack, rsm, rsm->r_flags);  in rack_peer_reneges()
10118 		rsm->r_flags &= ~(RACK_ACKED|RACK_SACK_PASSED|RACK_WAS_SACKPASS);  in rack_peer_reneges()
10121 			TAILQ_INSERT_HEAD(&rack->r_ctl.rc_tmap, rsm, r_tnext);  in rack_peer_reneges()
10124 			TAILQ_INSERT_AFTER(&rack->r_ctl.rc_tmap, tmap, rsm, r_tnext);  in rack_peer_reneges()
10127 		tmap->r_in_tmap = 1;  in rack_peer_reneges()
10128 		rsm = tqhash_next(rack->r_ctl.tqh, rsm);  in rack_peer_reneges()
10134 	sack_filter_clear(&rack->r_ctl.rack_sf, th_ack);  in rack_peer_reneges()
10179 	 * The cum-ack is being advanced upon the sendmap.  in rack_rsm_sender_update()
10185 	if ((tp->t_flags & TF_GPUTINPROG) == 0)  in rack_rsm_sender_update()
10192 	if (SEQ_GT(rsm->r_end, tp->gput_ack)) {  in rack_rsm_sender_update()
10193 		tp->gput_ack = rsm->r_end;  in rack_rsm_sender_update()
10202 	if (rack->app_limited_needs_set)  in rack_rsm_sender_update()
10220 	if ((ts = rsm->r_tim_lastsent[(rsm->r_rtr_cnt-1)]) <=  in rack_rsm_sender_update()
10221 	    rack->r_ctl.rc_gp_cumack_ts)  in rack_rsm_sender_update()
10224 		rack->r_ctl.rc_gp_cumack_ts = ts;  in rack_rsm_sender_update()
10225 		rack_log_gpset(rack, tp->gput_ack, (uint32_t)ts, rsm->r_end,  in rack_rsm_sender_update()
10240 	if (sack_filter_blks_used(&rack->r_ctl.rack_sf)) {  in rack_process_to_cumack()
10245 		sack_filter_blks(tp, &rack->r_ctl.rack_sf, NULL, 0, th_ack);  in rack_process_to_cumack()
10247 	if (SEQ_GT(th_ack, tp->snd_una)) {  in rack_process_to_cumack()
10249 		rack->r_ctl.cleared_app_ack = 0;  in rack_process_to_cumack()
10251 	rack->r_wanted_output = 1;  in rack_process_to_cumack()
10252 	if (SEQ_GT(th_ack, tp->snd_una))  in rack_process_to_cumack()
10253 		rack->r_ctl.last_cumack_advance = acktime;  in rack_process_to_cumack()
10256 	if ((rack->rc_last_tlp_acked_set == 1)&&  in rack_process_to_cumack()
10257 	    (rack->rc_last_tlp_past_cumack == 1) &&  in rack_process_to_cumack()
10258 	    (SEQ_GT(rack->r_ctl.last_tlp_acked_start, th_ack))) {  in rack_process_to_cumack()
10261 		 * tlp retransmit sequence is ahead of the cum-ack.  in rack_process_to_cumack()
10262 		 * This can only happen when the cum-ack moves all  in rack_process_to_cumack()
10269 		 * the cum-ack is by the TLP before checking which is  in rack_process_to_cumack()
10273 				     rack->r_ctl.last_tlp_acked_start,  in rack_process_to_cumack()
10274 				     rack->r_ctl.last_tlp_acked_end);  in rack_process_to_cumack()
10275 		rack->rc_last_tlp_acked_set = 0;  in rack_process_to_cumack()
10276 		rack->rc_last_tlp_past_cumack = 0;  in rack_process_to_cumack()
10277 	} else if ((rack->rc_last_tlp_acked_set == 1) &&  in rack_process_to_cumack()
10278 		   (rack->rc_last_tlp_past_cumack == 0) &&  in rack_process_to_cumack()
10279 		   (SEQ_GEQ(th_ack, rack->r_ctl.last_tlp_acked_end))) {  in rack_process_to_cumack()
10283 		rack->rc_last_tlp_past_cumack = 1;  in rack_process_to_cumack()
10286 	if ((rack->rc_last_sent_tlp_seq_valid == 1) &&  in rack_process_to_cumack()
10287 	    (rack->rc_last_sent_tlp_past_cumack == 1) &&  in rack_process_to_cumack()
10288 	    (SEQ_GT(rack->r_ctl.last_sent_tlp_seq,  th_ack))) {  in rack_process_to_cumack()
10290 				     rack->r_ctl.last_sent_tlp_seq,  in rack_process_to_cumack()
10291 				     (rack->r_ctl.last_sent_tlp_seq +  in rack_process_to_cumack()
10292 				      rack->r_ctl.last_sent_tlp_len));  in rack_process_to_cumack()
10293 		rack->rc_last_sent_tlp_seq_valid = 0;  in rack_process_to_cumack()
10294 		rack->rc_last_sent_tlp_past_cumack = 0;  in rack_process_to_cumack()
10295 	} else if ((rack->rc_last_sent_tlp_seq_valid == 1) &&  in rack_process_to_cumack()
10296 		   (rack->rc_last_sent_tlp_past_cumack == 0) &&  in rack_process_to_cumack()
10297 		   (SEQ_GEQ(th_ack, rack->r_ctl.last_sent_tlp_seq))) {  in rack_process_to_cumack()
10301 		rack->rc_last_sent_tlp_past_cumack = 1;  in rack_process_to_cumack()
10304 	rsm = tqhash_min(rack->r_ctl.tqh);  in rack_process_to_cumack()
10306 		if ((th_ack - 1) == tp->iss) {  in rack_process_to_cumack()
10315 		if (tp->t_flags & TF_SENTFIN) {  in rack_process_to_cumack()
10322 		      tp->t_state, th_ack, rack,  in rack_process_to_cumack()
10323 		      tp->snd_una, tp->snd_max);  in rack_process_to_cumack()
10327 	if (SEQ_LT(th_ack, rsm->r_start)) {  in rack_process_to_cumack()
10331 		       rsm->r_start,  in rack_process_to_cumack()
10332 		       th_ack, tp->t_state, rack->r_state);  in rack_process_to_cumack()
10339 	if ((rsm->r_flags & RACK_TLP) &&  in rack_process_to_cumack()
10340 	    (rsm->r_rtr_cnt > 1)) {  in rack_process_to_cumack()
10350 		if (rack->rc_last_tlp_acked_set &&  in rack_process_to_cumack()
10357 			rack_log_dsack_event(rack, 10, __LINE__, rsm->r_start, rsm->r_end);  in rack_process_to_cumack()
10361 			if (SEQ_LT(rsm->r_start, rack->r_ctl.last_tlp_acked_start)) {  in rack_process_to_cumack()
10362 				rack->r_ctl.last_tlp_acked_start = rsm->r_start;  in rack_process_to_cumack()
10363 				rack_log_dsack_event(rack, 11, __LINE__, rack->r_ctl.last_tlp_acked_start,  in rack_process_to_cumack()
10364 						     rack->r_ctl.last_tlp_acked_end);  in rack_process_to_cumack()
10366 			if (SEQ_GT(rsm->r_end, rack->r_ctl.last_tlp_acked_end)) {  in rack_process_to_cumack()
10367 				rack->r_ctl.last_tlp_acked_end = rsm->r_end;  in rack_process_to_cumack()
10368 				rack_log_dsack_event(rack, 11, __LINE__, rack->r_ctl.last_tlp_acked_start,  in rack_process_to_cumack()
10369 						     rack->r_ctl.last_tlp_acked_end);  in rack_process_to_cumack()
10372 			rack->rc_last_tlp_past_cumack = 1;  in rack_process_to_cumack()
10373 			rack->r_ctl.last_tlp_acked_start = rsm->r_start;  in rack_process_to_cumack()
10374 			rack->r_ctl.last_tlp_acked_end = rsm->r_end;  in rack_process_to_cumack()
10375 			rack->rc_last_tlp_acked_set = 1;  in rack_process_to_cumack()
10376 			rack_log_dsack_event(rack, 8, __LINE__, rsm->r_start, rsm->r_end);  in rack_process_to_cumack()
10380 	rack->r_ctl.last_tmit_time_acked = rsm->r_tim_lastsent[(rsm->r_rtr_cnt - 1)];  in rack_process_to_cumack()
10381 	if (SEQ_GEQ(th_ack, rsm->r_end)) {  in rack_process_to_cumack()
10386 		if (rsm->r_flags & RACK_WAS_LOST) {  in rack_process_to_cumack()
10392 			rsm->r_flags  &= ~RACK_WAS_LOST;  in rack_process_to_cumack()
10393 			KASSERT((rack->r_ctl.rc_considered_lost >= (rsm->r_end - rsm->r_start)),  in rack_process_to_cumack()
10395 			if (rack->r_ctl.rc_considered_lost >= (rsm->r_end - rsm->r_start))  in rack_process_to_cumack()
10396 				rack->r_ctl.rc_considered_lost -= rsm->r_end - rsm->r_start;  in rack_process_to_cumack()
10398 				rack->r_ctl.rc_considered_lost = 0;  in rack_process_to_cumack()
10400 		rack_log_map_chg(tp, rack, NULL, rsm, NULL, MAP_FREE, rsm->r_end, __LINE__);  in rack_process_to_cumack()
10401 		rack->r_ctl.rc_holes_rxt -= rsm->r_rtr_bytes;  in rack_process_to_cumack()
10402 		rsm->r_rtr_bytes = 0;  in rack_process_to_cumack()
10408 		tqhash_remove(rack->r_ctl.tqh, rsm, REMOVE_TYPE_CUMACK);  in rack_process_to_cumack()
10409 		if (rsm->r_in_tmap) {  in rack_process_to_cumack()
10410 			TAILQ_REMOVE(&rack->r_ctl.rc_tmap, rsm, r_tnext);  in rack_process_to_cumack()
10411 			rsm->r_in_tmap = 0;  in rack_process_to_cumack()
10414 		if (rsm->r_flags & RACK_ACKED) {  in rack_process_to_cumack()
10416 			 * It was acked on the scoreboard -- remove  in rack_process_to_cumack()
10419 			rack->r_ctl.rc_sacked -= (rsm->r_end - rsm->r_start);  in rack_process_to_cumack()
10421 		} else if (rsm->r_flags & RACK_SACK_PASSED) {  in rack_process_to_cumack()
10427 			rsm->r_flags &= ~RACK_SACK_PASSED;  in rack_process_to_cumack()
10428 			rsm->r_ack_arrival = rack_to_usec_ts(&rack->r_ctl.act_rcv_time);  in rack_process_to_cumack()
10429 			rsm->r_flags |= RACK_ACKED;  in rack_process_to_cumack()
10430 			rack->r_ctl.rc_reorder_ts = cts;  in rack_process_to_cumack()
10431 			if (rack->r_ctl.rc_reorder_ts == 0)  in rack_process_to_cumack()
10432 				rack->r_ctl.rc_reorder_ts = 1;  in rack_process_to_cumack()
10433 			if (rack->r_ent_rec_ns) {  in rack_process_to_cumack()
10438 				rack->r_might_revert = 1;  in rack_process_to_cumack()
10440 			rack_update_pcm_ack(rack, 1, rsm->r_start, rsm->r_end);  in rack_process_to_cumack()
10442 			rack_update_pcm_ack(rack, 1, rsm->r_start, rsm->r_end);  in rack_process_to_cumack()
10444 		if ((rsm->r_flags & RACK_TO_REXT) &&  in rack_process_to_cumack()
10445 		    (tp->t_flags & TF_RCVD_TSTMP) &&  in rack_process_to_cumack()
10446 		    (to->to_flags & TOF_TS) &&  in rack_process_to_cumack()
10447 		    (to->to_tsecr != 0) &&  in rack_process_to_cumack()
10448 		    (tp->t_flags & TF_PREVVALID)) {  in rack_process_to_cumack()
10454 			tp->t_flags &= ~TF_PREVVALID;  in rack_process_to_cumack()
10455 			if (to->to_tsecr == rack_ts_to_msec(rsm->r_tim_lastsent[0])) {  in rack_process_to_cumack()
10460 		left = th_ack - rsm->r_end;  in rack_process_to_cumack()
10461 		if (rack->app_limited_needs_set && newly_acked)  in rack_process_to_cumack()
10469 		rsm = tqhash_min(rack->r_ctl.tqh);  in rack_process_to_cumack()
10470 		if (rsm && (rsm->r_flags & RACK_ACKED) && (th_ack == rsm->r_start)) {  in rack_process_to_cumack()
10478 			 * given us snd_una up to (rsm->r_end).  in rack_process_to_cumack()
10482 			 * our rsm->r_start in case we get an old ack  in rack_process_to_cumack()
10489 	if (rsm->r_flags & RACK_ACKED) {  in rack_process_to_cumack()
10491 		 * It was acked on the scoreboard -- remove it from  in rack_process_to_cumack()
10492 		 * total for the part being cum-acked.  in rack_process_to_cumack()
10494 		rack->r_ctl.rc_sacked -= (th_ack - rsm->r_start);  in rack_process_to_cumack()
10496 		rack_update_pcm_ack(rack, 1, rsm->r_start, th_ack);  in rack_process_to_cumack()
10499 	if (rsm->r_flags & RACK_WAS_LOST) {  in rack_process_to_cumack()
10506 		KASSERT((rack->r_ctl.rc_considered_lost >= (th_ack - rsm->r_start)),  in rack_process_to_cumack()
10508 		if (rack->r_ctl.rc_considered_lost >= (th_ack - rsm->r_start))  in rack_process_to_cumack()
10509 			rack->r_ctl.rc_considered_lost -= th_ack - rsm->r_start;  in rack_process_to_cumack()
10511 			rack->r_ctl.rc_considered_lost = 0;  in rack_process_to_cumack()
10517 	rsm->r_dupack = 0;  in rack_process_to_cumack()
10519 	if (rsm->r_rtr_bytes) {  in rack_process_to_cumack()
10526 		ack_am = (th_ack - rsm->r_start);  in rack_process_to_cumack()
10527 		if (ack_am >= rsm->r_rtr_bytes) {  in rack_process_to_cumack()
10528 			rack->r_ctl.rc_holes_rxt -= ack_am;  in rack_process_to_cumack()
10529 			rsm->r_rtr_bytes -= ack_am;  in rack_process_to_cumack()
10539 	if (rsm->m &&  in rack_process_to_cumack()
10540 	    ((rsm->orig_m_len != rsm->m->m_len) ||  in rack_process_to_cumack()
10541 	     (M_TRAILINGROOM(rsm->m) != rsm->orig_t_space))) {  in rack_process_to_cumack()
10545 	rsm->soff += (th_ack - rsm->r_start);  in rack_process_to_cumack()
10548 	tqhash_trim(rack->r_ctl.tqh, th_ack);  in rack_process_to_cumack()
10554 		m = rsm->m;  in rack_process_to_cumack()
10555 		soff = rsm->soff;  in rack_process_to_cumack()
10557 			while (soff >= m->m_len) {  in rack_process_to_cumack()
10558 				soff -= m->m_len;  in rack_process_to_cumack()
10559 				KASSERT((m->m_next != NULL),  in rack_process_to_cumack()
10561 					 rsm, rsm->soff, soff, m));  in rack_process_to_cumack()
10562 				m = m->m_next;  in rack_process_to_cumack()
10565 					 * This is a fall-back that prevents a panic. In reality  in rack_process_to_cumack()
10568 					 * but tqhash_trim did update rsm->r_start so the offset calcuation  in rack_process_to_cumack()
10573 					m = sbsndmbuf(&rack->rc_inp->inp_socket->so_snd,  in rack_process_to_cumack()
10574 						      (rsm->r_start - tp->snd_una),  in rack_process_to_cumack()
10582 			rsm->m = m;  in rack_process_to_cumack()
10583 			rsm->soff = soff;  in rack_process_to_cumack()
10584 			rsm->orig_m_len = rsm->m->m_len;  in rack_process_to_cumack()
10585 			rsm->orig_t_space = M_TRAILINGROOM(rsm->m);  in rack_process_to_cumack()
10588 	if (rack->app_limited_needs_set &&  in rack_process_to_cumack()
10589 	    SEQ_GEQ(th_ack, tp->gput_seq))  in rack_process_to_cumack()
10590 		rack_need_set_test(tp, rack, rsm, tp->snd_una, __LINE__, RACK_USE_BEG);  in rack_process_to_cumack()
10599 	if (rack->r_might_revert) {  in rack_handle_might_revert()
10610 		TAILQ_FOREACH(rsm, &rack->r_ctl.rc_tmap, r_tnext) {  in rack_handle_might_revert()
10611 			if (rsm->r_flags & RACK_SACK_PASSED) {  in rack_handle_might_revert()
10623 			rack->r_ent_rec_ns = 0;  in rack_handle_might_revert()
10624 			orig_cwnd = tp->snd_cwnd;  in rack_handle_might_revert()
10625 			tp->snd_ssthresh = rack->r_ctl.rc_ssthresh_at_erec;  in rack_handle_might_revert()
10626 			tp->snd_recover = tp->snd_una;  in rack_handle_might_revert()
10628 			if (IN_RECOVERY(tp->t_flags)) {  in rack_handle_might_revert()
10630 				if ((rack->rto_from_rec == 1) && (rack_ssthresh_rest_rto_rec != 0) ){  in rack_handle_might_revert()
10633 					 * and then re-entered recovery (more sack's arrived)  in rack_handle_might_revert()
10635 					 * the first recovery. We want to be able to slow-start  in rack_handle_might_revert()
10639 					 * so we get no slow-start after our RTO.  in rack_handle_might_revert()
10641 					rack->rto_from_rec = 0;  in rack_handle_might_revert()
10642 					if (rack->r_ctl.rto_ssthresh > tp->snd_ssthresh)  in rack_handle_might_revert()
10643 						tp->snd_ssthresh = rack->r_ctl.rto_ssthresh;  in rack_handle_might_revert()
10647 		rack->r_might_revert = 0;  in rack_handle_might_revert()
10660 		am = end - start;  in rack_note_dsack()
10663 	if ((rack->rc_last_tlp_acked_set ) &&  in rack_note_dsack()
10664 	    (SEQ_GEQ(start, rack->r_ctl.last_tlp_acked_start)) &&  in rack_note_dsack()
10665 	    (SEQ_LEQ(end, rack->r_ctl.last_tlp_acked_end))) {  in rack_note_dsack()
10676 	if (rack->rc_last_sent_tlp_seq_valid) {  in rack_note_dsack()
10677 		l_end = rack->r_ctl.last_sent_tlp_seq + rack->r_ctl.last_sent_tlp_len;  in rack_note_dsack()
10678 		if (SEQ_GEQ(start, rack->r_ctl.last_sent_tlp_seq) &&  in rack_note_dsack()
10689 	if (rack->rc_dsack_round_seen == 0) {  in rack_note_dsack()
10690 		rack->rc_dsack_round_seen = 1;  in rack_note_dsack()
10691 		rack->r_ctl.dsack_round_end = rack->rc_tp->snd_max;  in rack_note_dsack()
10692 		rack->r_ctl.num_dsack++;  in rack_note_dsack()
10693 		rack->r_ctl.dsack_persist = 16;	/* 16 is from the standard */  in rack_note_dsack()
10701 	rack->r_ctl.dsack_byte_cnt += am;  in rack_note_dsack()
10702 	if (!IN_FASTRECOVERY(rack->rc_tp->t_flags) &&  in rack_note_dsack()
10703 	    rack->r_ctl.retran_during_recovery &&  in rack_note_dsack()
10704 	    (rack->r_ctl.dsack_byte_cnt >= rack->r_ctl.retran_during_recovery)) {  in rack_note_dsack()
10709 		rack->r_might_revert = 1;  in rack_note_dsack()
10710 		rack_handle_might_revert(rack->rc_tp, rack);  in rack_note_dsack()
10711 		rack->r_might_revert = 0;  in rack_note_dsack()
10712 		rack->r_ctl.retran_during_recovery = 0;  in rack_note_dsack()
10713 		rack->r_ctl.dsack_byte_cnt = 0;  in rack_note_dsack()
10721 	return (((tp->snd_max - snd_una) -  in do_rack_compute_pipe()
10722 		 (rack->r_ctl.rc_sacked + rack->r_ctl.rc_considered_lost)) + rack->r_ctl.rc_holes_rxt);  in do_rack_compute_pipe()
10729 					      (struct tcp_rack *)tp->t_fb_ptr,  in rack_compute_pipe()
10730 					      tp->snd_una));  in rack_compute_pipe()
10739 	rack->r_ctl.rc_prr_delivered += changed;  in rack_update_prr()
10741 	if (sbavail(&rack->rc_inp->inp_socket->so_snd) <= (tp->snd_max - tp->snd_una)) {  in rack_update_prr()
10745 		 * Note we use tp->snd_una here and not th_ack because  in rack_update_prr()
10748 		rack->r_ctl.rc_prr_sndcnt = 0;  in rack_update_prr()
10752 	if (SEQ_GT(tp->snd_una, th_ack)) {  in rack_update_prr()
10753 		snd_una = tp->snd_una;  in rack_update_prr()
10758 	if (pipe > tp->snd_ssthresh) {  in rack_update_prr()
10761 		sndcnt = rack->r_ctl.rc_prr_delivered * tp->snd_ssthresh;  in rack_update_prr()
10762 		if (rack->r_ctl.rc_prr_recovery_fs > 0)  in rack_update_prr()
10763 			sndcnt /= (long)rack->r_ctl.rc_prr_recovery_fs;  in rack_update_prr()
10765 			rack->r_ctl.rc_prr_sndcnt = 0;  in rack_update_prr()
10770 		if (sndcnt > (long)rack->r_ctl.rc_prr_out)  in rack_update_prr()
10771 			sndcnt -= rack->r_ctl.rc_prr_out;  in rack_update_prr()
10774 		rack->r_ctl.rc_prr_sndcnt = sndcnt;  in rack_update_prr()
10779 		if (rack->r_ctl.rc_prr_delivered > rack->r_ctl.rc_prr_out)  in rack_update_prr()
10780 			limit = (rack->r_ctl.rc_prr_delivered - rack->r_ctl.rc_prr_out);  in rack_update_prr()
10786 		if (tp->snd_ssthresh > pipe) {  in rack_update_prr()
10787 			rack->r_ctl.rc_prr_sndcnt = min((tp->snd_ssthresh - pipe), limit);  in rack_update_prr()
10790 			rack->r_ctl.rc_prr_sndcnt = min(0, limit);  in rack_update_prr()
10817 	rack = (struct tcp_rack *)tp->t_fb_ptr;  in rack_log_ack()
10819 	rsm = tqhash_min(rack->r_ctl.tqh);  in rack_log_ack()
10821 	th_ack = th->th_ack;  in rack_log_ack()
10822 	segsiz = ctf_fixed_maxseg(rack->rc_tp);  in rack_log_ack()
10827 		 * credit for larger cum-ack moves).  in rack_log_ack()
10831 		ac = BYTES_THIS_ACK(tp, th) / ctf_fixed_maxseg(rack->rc_tp);  in rack_log_ack()
10834 	if (SEQ_GT(th_ack, tp->snd_una)) {  in rack_log_ack()
10836 		tp->t_acktime = ticks;  in rack_log_ack()
10838 	if (rsm && SEQ_GT(th_ack, rsm->r_start))  in rack_log_ack()
10839 		changed = th_ack - rsm->r_start;  in rack_log_ack()
10842 				       tcp_tv_to_lusectick(&rack->r_ctl.act_rcv_time));  in rack_log_ack()
10844 	if ((to->to_flags & TOF_SACK) == 0) {  in rack_log_ack()
10848 		 * For cases where we struck a dup-ack  in rack_log_ack()
10853 			changed += ctf_fixed_maxseg(rack->rc_tp);  in rack_log_ack()
10858 	if (SEQ_GT(th_ack, tp->snd_una))  in rack_log_ack()
10861 		ack_point = tp->snd_una;  in rack_log_ack()
10862 	for (i = 0; i < to->to_nsacks; i++) {  in rack_log_ack()
10863 		bcopy((to->to_sacks + i * TCPOLEN_SACK),  in rack_log_ack()
10869 		    SEQ_LT(sack.start, tp->snd_max) &&  in rack_log_ack()
10871 		    SEQ_LEQ(sack.end, tp->snd_max)) {  in rack_log_ack()
10882 			 * Its a D-SACK block.  in rack_log_ack()
10887 	if (rack->rc_dsack_round_seen) {  in rack_log_ack()
10889 		if (SEQ_GEQ(th_ack, rack->r_ctl.dsack_round_end)) {  in rack_log_ack()
10891 			rack->rc_dsack_round_seen = 0;  in rack_log_ack()
10899 	num_sack_blks = sack_filter_blks(tp, &rack->r_ctl.rack_sf, sack_blocks,  in rack_log_ack()
10900 					 num_sack_blks, th->th_ack);  in rack_log_ack()
10901 	ctf_log_sack_filter(rack->rc_tp, num_sack_blks, sack_blocks);  in rack_log_ack()
10948 					 * Now collapse out the dup-sack and  in rack_log_ack()
10956 					num_sack_blks--;  in rack_log_ack()
10968 	rsm = TAILQ_FIRST(&rack->r_ctl.rc_tmap);  in rack_log_ack()
10970 	    SEQ_GT(sack_blocks[0].end, rsm->r_start) &&  in rack_log_ack()
10971 	    SEQ_LT(sack_blocks[0].start, rsm->r_end)) {  in rack_log_ack()
10978 			rack->r_wanted_output = 1;  in rack_log_ack()
10986 			 * i.e the sack-filter pushes down  in rack_log_ack()
10992 			counter_u64_add(rack_ack_total, (acked / ctf_fixed_maxseg(rack->rc_tp)));  in rack_log_ack()
11004 	rsm = rack->r_ctl.rc_sacklast;  in rack_log_ack()
11008 			rack->r_wanted_output = 1;  in rack_log_ack()
11016 		 * you have more than one sack-blk, this  in rack_log_ack()
11018 		 * and the sack-filter is still working, or  in rack_log_ack()
11027 		rack_timer_cancel(tp, rack, rack->r_ctl.rc_rcvtime, __LINE__);  in rack_log_ack()
11031 	if ((!IN_FASTRECOVERY(tp->t_flags)) &&  in rack_log_ack()
11033 	    ((rsm->r_flags & RACK_MUST_RXT) == 0)) {  in rack_log_ack()
11041 		if (rack->rack_no_prr == 0) {  in rack_log_ack()
11042 			rack->r_ctl.rc_prr_sndcnt = ctf_fixed_maxseg(tp);  in rack_log_ack()
11045 		rack->r_timer_override = 1;  in rack_log_ack()
11046 		rack->r_early = 0;  in rack_log_ack()
11047 		rack->r_ctl.rc_agg_early = 0;  in rack_log_ack()
11048 	} else if (IN_FASTRECOVERY(tp->t_flags) &&  in rack_log_ack()
11050 		   (rack->r_rr_config == 3)) {  in rack_log_ack()
11055 		rack->r_timer_override = 1;  in rack_log_ack()
11056 		rack->r_ctl.rc_hpts_flags &= ~PACE_PKT_OUTPUT;  in rack_log_ack()
11057 		rack->r_ctl.rc_resend = rsm;  in rack_log_ack()
11059 	if (IN_FASTRECOVERY(tp->t_flags) &&  in rack_log_ack()
11060 	    (rack->rack_no_prr == 0) &&  in rack_log_ack()
11063 		if ((rsm && (rack->r_ctl.rc_prr_sndcnt >= ctf_fixed_maxseg(tp)) &&  in rack_log_ack()
11064 		     ((tcp_in_hpts(rack->rc_tp) == 0) &&  in rack_log_ack()
11065 		      ((rack->r_ctl.rc_hpts_flags & PACE_PKT_OUTPUT) == 0)))) {  in rack_log_ack()
11070 			rack->r_early = 0;  in rack_log_ack()
11071 			rack->r_ctl.rc_agg_early = 0;  in rack_log_ack()
11072 			rack->r_timer_override = 1;  in rack_log_ack()
11082 	rsm = TAILQ_FIRST(&rack->r_ctl.rc_tmap);  in rack_strike_dupack()
11088 		if ((rsm->r_dupack >= DUP_ACK_THRESHOLD)  ||  in rack_strike_dupack()
11089 		    (rsm->r_flags & RACK_MUST_RXT)) {  in rack_strike_dupack()
11095 	if (rsm && (rsm->r_dupack < 0xff)) {  in rack_strike_dupack()
11096 		rsm->r_dupack++;  in rack_strike_dupack()
11097 		if (rsm->r_dupack >= DUP_ACK_THRESHOLD) {  in rack_strike_dupack()
11103 			 * we will get a return of the rsm. For a non-sack  in rack_strike_dupack()
11108 			rack->r_ctl.rc_resend = tcp_rack_output(rack->rc_tp, rack, cts);  in rack_strike_dupack()
11109 			if (rack->r_ctl.rc_resend != NULL) {  in rack_strike_dupack()
11110 				if (!IN_FASTRECOVERY(rack->rc_tp->t_flags)) {  in rack_strike_dupack()
11111 					rack_cong_signal(rack->rc_tp, CC_NDUPACK,  in rack_strike_dupack()
11114 				rack->r_wanted_output = 1;  in rack_strike_dupack()
11115 				rack->r_timer_override = 1;  in rack_strike_dupack()
11139 	 * gauge the inter-ack times). If that occurs we have a real problem  in rack_check_bottom_drag()
11152 	if (tp->snd_max == tp->snd_una) {  in rack_check_bottom_drag()
11164 		tcp_trace_point(rack->rc_tp, TCP_TP_PACED_BOTTOM);  in rack_check_bottom_drag()
11166 		rack->rc_dragged_bottom = 1;  in rack_check_bottom_drag()
11168 		if ((rack->r_ctl.rack_rs.rs_flags & RACK_RTT_VALID) &&  in rack_check_bottom_drag()
11169 		    (rack->dis_lt_bw == 0) &&  in rack_check_bottom_drag()
11170 		    (rack->use_lesser_lt_bw == 0) &&  in rack_check_bottom_drag()
11173 			 * Lets use the long-term b/w we have  in rack_check_bottom_drag()
11176 			if (rack->rc_gp_filled == 0) {  in rack_check_bottom_drag()
11188 				rack->r_ctl.rc_rtt_diff = 0;  in rack_check_bottom_drag()
11189 				rack->r_ctl.gp_bw = lt_bw;  in rack_check_bottom_drag()
11190 				rack->rc_gp_filled = 1;  in rack_check_bottom_drag()
11191 				if (rack->r_ctl.num_measurements < RACK_REQ_AVG)  in rack_check_bottom_drag()
11192 					rack->r_ctl.num_measurements = RACK_REQ_AVG;  in rack_check_bottom_drag()
11193 				rack_set_pace_segments(rack->rc_tp, rack, __LINE__, NULL);  in rack_check_bottom_drag()
11194 			} else if (lt_bw > rack->r_ctl.gp_bw) {  in rack_check_bottom_drag()
11195 				rack->r_ctl.rc_rtt_diff = 0;  in rack_check_bottom_drag()
11196 				if (rack->r_ctl.num_measurements < RACK_REQ_AVG)  in rack_check_bottom_drag()
11197 					rack->r_ctl.num_measurements = RACK_REQ_AVG;  in rack_check_bottom_drag()
11198 				rack->r_ctl.gp_bw = lt_bw;  in rack_check_bottom_drag()
11199 				rack_set_pace_segments(rack->rc_tp, rack, __LINE__, NULL);  in rack_check_bottom_drag()
11201 				rack_increase_bw_mul(rack, -1, 0, 0, 1);  in rack_check_bottom_drag()
11202 			if ((rack->gp_ready == 0) &&  in rack_check_bottom_drag()
11203 			    (rack->r_ctl.num_measurements >= rack->r_ctl.req_measurements)) {  in rack_check_bottom_drag()
11205 				rack->gp_ready = 1;  in rack_check_bottom_drag()
11206 				if (rack->dgp_on ||  in rack_check_bottom_drag()
11207 				    rack->rack_hibeta)  in rack_check_bottom_drag()
11209 				if (rack->defer_options)  in rack_check_bottom_drag()
11216 			rack_increase_bw_mul(rack, -1, 0, 0, 1);  in rack_check_bottom_drag()
11218 	} else if ((IN_FASTRECOVERY(tp->t_flags) == 0) &&  in rack_check_bottom_drag()
11219 		   (sbavail(&so->so_snd) > max((segsiz * (4 + rack_req_segs)),  in rack_check_bottom_drag()
11221 		   (rack->r_ctl.cwnd_to_use > max((segsiz * (rack_req_segs + 2)), minseg)) &&  in rack_check_bottom_drag()
11222 		   (tp->snd_wnd > max((segsiz * (rack_req_segs + 2)), minseg)) &&  in rack_check_bottom_drag()
11223 		   (ctf_flight_size(rack->rc_tp, rack->r_ctl.rc_sacked) <=  in rack_check_bottom_drag()
11234 		rack->rc_dragged_bottom = 1;  in rack_check_bottom_drag()
11235 		rack_increase_bw_mul(rack, -1, 0, 0, 1);  in rack_check_bottom_drag()
11246 	do_log = tcp_bblogging_on(rack->rc_tp);  in rack_log_hybrid()
11248 		if ((do_log = tcp_bblogging_point_on(rack->rc_tp, TCP_BBPOINT_REQ_LEVEL_LOGGING) )== 0)  in rack_log_hybrid()
11269 			log.u_bbr.flex2 = cur->start_seq;  in rack_log_hybrid()
11270 			log.u_bbr.flex3 = cur->end_seq;  in rack_log_hybrid()
11271 			log.u_bbr.flex4 = (uint32_t)((cur->localtime >> 32) & 0x00000000ffffffff);  in rack_log_hybrid()
11272 			log.u_bbr.flex5 = (uint32_t)(cur->localtime & 0x00000000ffffffff);  in rack_log_hybrid()
11273 			log.u_bbr.flex6 = cur->flags;  in rack_log_hybrid()
11274 			log.u_bbr.pkts_out = cur->hybrid_flags;  in rack_log_hybrid()
11275 			log.u_bbr.rttProp = cur->timestamp;  in rack_log_hybrid()
11276 			log.u_bbr.cur_del_rate = cur->cspr;  in rack_log_hybrid()
11277 			log.u_bbr.bw_inuse = cur->start;  in rack_log_hybrid()
11278 			log.u_bbr.applimited = (uint32_t)(cur->end & 0x00000000ffffffff);  in rack_log_hybrid()
11279 			log.u_bbr.delivered = (uint32_t)((cur->end >> 32) & 0x00000000ffffffff) ;  in rack_log_hybrid()
11280 			log.u_bbr.epoch = (uint32_t)(cur->deadline & 0x00000000ffffffff);  in rack_log_hybrid()
11281 			log.u_bbr.lt_epoch = (uint32_t)((cur->deadline >> 32) & 0x00000000ffffffff) ;  in rack_log_hybrid()
11284 			off = (uint64_t)(cur) - (uint64_t)(&rack->rc_tp->t_tcpreq_info[0]);  in rack_log_hybrid()
11293 		log.u_bbr.flex7 = rack->rc_catch_up;  in rack_log_hybrid()
11295 		log.u_bbr.flex7 |= rack->rc_hybrid_mode;  in rack_log_hybrid()
11297 		log.u_bbr.flex7 |= rack->dgp_on;  in rack_log_hybrid()
11305 		log.u_bbr.bbr_state = rack->rc_always_pace;  in rack_log_hybrid()
11307 		log.u_bbr.bbr_state |= rack->dgp_on;  in rack_log_hybrid()
11309 		log.u_bbr.bbr_state |= rack->rc_hybrid_mode;  in rack_log_hybrid()
11311 		log.u_bbr.bbr_state |= rack->use_fixed_rate;  in rack_log_hybrid()
11313 		log.u_bbr.delRate = rack->r_ctl.bw_rate_cap;  in rack_log_hybrid()
11314 		log.u_bbr.bbr_substate = rack->r_ctl.client_suggested_maxseg;  in rack_log_hybrid()
11315 		log.u_bbr.inflight = ctf_flight_size(rack->rc_tp, rack->r_ctl.rc_sacked);  in rack_log_hybrid()
11316 		log.u_bbr.pkt_epoch = rack->rc_tp->tcp_hybrid_start;  in rack_log_hybrid()
11317 		log.u_bbr.lost = rack->rc_tp->tcp_hybrid_error;  in rack_log_hybrid()
11318 		log.u_bbr.pacing_gain = (uint16_t)rack->rc_tp->tcp_hybrid_stop;  in rack_log_hybrid()
11319 		tcp_log_event(rack->rc_tp, NULL,  in rack_log_hybrid()
11320 		    &rack->rc_inp->inp_socket->so_rcv,  in rack_log_hybrid()
11321 		    &rack->rc_inp->inp_socket->so_snd,  in rack_log_hybrid()
11336 	orig_ent = rack->r_ctl.rc_last_sft;  in rack_set_dgp_hybrid_mode()
11337 	rc_cur = tcp_req_find_req_for_seq(rack->rc_tp, seq);  in rack_set_dgp_hybrid_mode()
11340 		if (rack->rc_hybrid_mode)  in rack_set_dgp_hybrid_mode()
11342 		rc_cur = tcp_req_find_req_for_seq(rack->rc_tp, (seq + len - 1));  in rack_set_dgp_hybrid_mode()
11349 		if (rack->rc_hybrid_mode) {  in rack_set_dgp_hybrid_mode()
11350 			rack->r_ctl.client_suggested_maxseg = 0;  in rack_set_dgp_hybrid_mode()
11351 			rack->rc_catch_up = 0;  in rack_set_dgp_hybrid_mode()
11352 			if (rack->cspr_is_fcc == 0)  in rack_set_dgp_hybrid_mode()
11353 				rack->r_ctl.bw_rate_cap = 0;  in rack_set_dgp_hybrid_mode()
11355 				rack->r_ctl.fillcw_cap = rack_fillcw_bw_cap;  in rack_set_dgp_hybrid_mode()
11357 		if (rack->rc_hybrid_mode) {  in rack_set_dgp_hybrid_mode()
11358 			rack_log_hybrid(rack, (seq + len - 1), NULL, HYBRID_LOG_NO_RANGE, __LINE__, err);  in rack_set_dgp_hybrid_mode()
11360 		if (rack->r_ctl.rc_last_sft) {  in rack_set_dgp_hybrid_mode()
11361 			rack->r_ctl.rc_last_sft = NULL;  in rack_set_dgp_hybrid_mode()
11365 	if ((rc_cur->hybrid_flags & TCP_HYBRID_PACING_WASSET) == 0) {  in rack_set_dgp_hybrid_mode()
11367 		if (rack->rc_hybrid_mode) {  in rack_set_dgp_hybrid_mode()
11368 			rack->r_ctl.client_suggested_maxseg = 0;  in rack_set_dgp_hybrid_mode()
11369 			rack->rc_catch_up = 0;  in rack_set_dgp_hybrid_mode()
11370 			rack->r_ctl.bw_rate_cap = 0;  in rack_set_dgp_hybrid_mode()
11372 		if (rack->r_ctl.rc_last_sft) {  in rack_set_dgp_hybrid_mode()
11373 			rack->r_ctl.rc_last_sft = NULL;  in rack_set_dgp_hybrid_mode()
11375 		if ((rc_cur->flags & TCP_TRK_TRACK_FLG_FSND) == 0) {  in rack_set_dgp_hybrid_mode()
11376 			rc_cur->flags |= TCP_TRK_TRACK_FLG_FSND;  in rack_set_dgp_hybrid_mode()
11377 			rc_cur->first_send = cts;  in rack_set_dgp_hybrid_mode()
11378 			rc_cur->sent_at_fs = rack->rc_tp->t_sndbytes;  in rack_set_dgp_hybrid_mode()
11379 			rc_cur->rxt_at_fs = rack->rc_tp->t_snd_rxt_bytes;  in rack_set_dgp_hybrid_mode()
11390 	tp = rack->rc_tp;  in rack_set_dgp_hybrid_mode()
11391 	if ((rack->r_ctl.rc_last_sft != NULL) &&  in rack_set_dgp_hybrid_mode()
11392 	    (rack->r_ctl.rc_last_sft == rc_cur)) {  in rack_set_dgp_hybrid_mode()
11394 		if (rack->rc_hybrid_mode)  in rack_set_dgp_hybrid_mode()
11398 	if (rack->rc_hybrid_mode == 0) {  in rack_set_dgp_hybrid_mode()
11399 		rack->r_ctl.rc_last_sft = rc_cur;  in rack_set_dgp_hybrid_mode()
11401 			orig_ent->sent_at_ls = rack->rc_tp->t_sndbytes;  in rack_set_dgp_hybrid_mode()
11402 			orig_ent->rxt_at_ls = rack->rc_tp->t_snd_rxt_bytes;  in rack_set_dgp_hybrid_mode()
11403 			orig_ent->flags |= TCP_TRK_TRACK_FLG_LSND;  in rack_set_dgp_hybrid_mode()
11408 	if ((rc_cur->hybrid_flags & TCP_HYBRID_PACING_CSPR) && rc_cur->cspr){  in rack_set_dgp_hybrid_mode()
11410 		if (rack->cspr_is_fcc == 0)  in rack_set_dgp_hybrid_mode()
11411 			rack->r_ctl.bw_rate_cap	= rack_compensate_for_linerate(rack, rc_cur->cspr);  in rack_set_dgp_hybrid_mode()
11413 			rack->r_ctl.fillcw_cap =  rack_compensate_for_linerate(rack, rc_cur->cspr);  in rack_set_dgp_hybrid_mode()
11415 		if (rack->rc_hybrid_mode) {  in rack_set_dgp_hybrid_mode()
11416 			if (rack->cspr_is_fcc == 0)  in rack_set_dgp_hybrid_mode()
11417 				rack->r_ctl.bw_rate_cap = 0;  in rack_set_dgp_hybrid_mode()
11419 				rack->r_ctl.fillcw_cap = rack_fillcw_bw_cap;  in rack_set_dgp_hybrid_mode()
11422 	if (rc_cur->hybrid_flags & TCP_HYBRID_PACING_H_MS)  in rack_set_dgp_hybrid_mode()
11423 		rack->r_ctl.client_suggested_maxseg = rc_cur->hint_maxseg;  in rack_set_dgp_hybrid_mode()
11425 		rack->r_ctl.client_suggested_maxseg = 0;  in rack_set_dgp_hybrid_mode()
11426 	if (rc_cur->timestamp == rack->r_ctl.last_tm_mark) {  in rack_set_dgp_hybrid_mode()
11430 		 * sendtime not arrival time for catch-up mode.  in rack_set_dgp_hybrid_mode()
11432 		rc_cur->hybrid_flags |= TCP_HYBRID_PACING_SENDTIME;  in rack_set_dgp_hybrid_mode()
11434 	if ((rc_cur->hybrid_flags & TCP_HYBRID_PACING_CU) &&  in rack_set_dgp_hybrid_mode()
11435 	    (rc_cur->cspr > 0)) {  in rack_set_dgp_hybrid_mode()
11438 		rack->rc_catch_up = 1;  in rack_set_dgp_hybrid_mode()
11443 		if (rc_cur->hybrid_flags & TCP_HYBRID_PACING_SENDTIME) {  in rack_set_dgp_hybrid_mode()
11449 			rc_cur->deadline = cts;  in rack_set_dgp_hybrid_mode()
11455 			rc_cur->deadline = rc_cur->localtime;  in rack_set_dgp_hybrid_mode()
11461 		len = rc_cur->end - rc_cur->start;  in rack_set_dgp_hybrid_mode()
11462 		if (tp->t_inpcb.inp_socket->so_snd.sb_tls_info) {  in rack_set_dgp_hybrid_mode()
11467 			len += tcp_estimate_tls_overhead(tp->t_inpcb.inp_socket, len);  in rack_set_dgp_hybrid_mode()
11477 		len /= rc_cur->cspr;  in rack_set_dgp_hybrid_mode()
11478 		rc_cur->deadline += len;  in rack_set_dgp_hybrid_mode()
11480 		rack->rc_catch_up = 0;  in rack_set_dgp_hybrid_mode()
11481 		rc_cur->deadline = 0;  in rack_set_dgp_hybrid_mode()
11483 	if (rack->r_ctl.client_suggested_maxseg != 0) {  in rack_set_dgp_hybrid_mode()
11491 		orig_ent->sent_at_ls = rack->rc_tp->t_sndbytes;  in rack_set_dgp_hybrid_mode()
11492 		orig_ent->rxt_at_ls = rack->rc_tp->t_snd_rxt_bytes;  in rack_set_dgp_hybrid_mode()
11493 		orig_ent->flags |= TCP_TRK_TRACK_FLG_LSND;  in rack_set_dgp_hybrid_mode()
11497 	rack->r_ctl.rc_last_sft = rc_cur;  in rack_set_dgp_hybrid_mode()
11498 	rack->r_ctl.last_tm_mark = rc_cur->timestamp;  in rack_set_dgp_hybrid_mode()
11508 	ent = rack->r_ctl.rc_last_sft;  in rack_chk_req_and_hybrid_on_out()
11510 	    (ent->flags == TCP_TRK_TRACK_FLG_EMPTY) ||  in rack_chk_req_and_hybrid_on_out()
11511 	    (SEQ_GEQ(seq, ent->end_seq))) {  in rack_chk_req_and_hybrid_on_out()
11514 		ent = rack->r_ctl.rc_last_sft;  in rack_chk_req_and_hybrid_on_out()
11520 	if (SEQ_LT(ent->end_seq, (seq + len))) {  in rack_chk_req_and_hybrid_on_out()
11531 		ent->end_seq = (seq + len);  in rack_chk_req_and_hybrid_on_out()
11532 		if (rack->rc_hybrid_mode)  in rack_chk_req_and_hybrid_on_out()
11536 	if ((ent->flags & TCP_TRK_TRACK_FLG_FSND) == 0) {  in rack_chk_req_and_hybrid_on_out()
11537 		ent->flags |= TCP_TRK_TRACK_FLG_FSND;  in rack_chk_req_and_hybrid_on_out()
11538 		ent->first_send = cts;  in rack_chk_req_and_hybrid_on_out()
11539 		ent->sent_at_fs = rack->rc_tp->t_sndbytes;  in rack_chk_req_and_hybrid_on_out()
11540 		ent->rxt_at_fs = rack->rc_tp->t_snd_rxt_bytes;  in rack_chk_req_and_hybrid_on_out()
11569 	new_total = acked_amount + rack->r_ctl.fsb.left_to_send;  in rack_gain_for_fastoutput()
11570 	gating_val = min((sbavail(&so->so_snd) - (tp->snd_max - tp->snd_una)),  in rack_gain_for_fastoutput()
11571 			 (tp->snd_wnd - (tp->snd_max - tp->snd_una)));  in rack_gain_for_fastoutput()
11575 		rack->r_ctl.fsb.left_to_send = new_total;  in rack_gain_for_fastoutput()
11576 …KASSERT((rack->r_ctl.fsb.left_to_send <= (sbavail(&rack->rc_inp->inp_socket->so_snd) - (tp->snd_ma…  in rack_gain_for_fastoutput()
11578 			 rack, rack->r_ctl.fsb.left_to_send,  in rack_gain_for_fastoutput()
11579 			 sbavail(&rack->rc_inp->inp_socket->so_snd),  in rack_gain_for_fastoutput()
11580 			 (tp->snd_max - tp->snd_una)));  in rack_gain_for_fastoutput()
11619 	snd_una = rack->rc_tp->snd_una;  in rack_adjust_sendmap_head()
11621 	m = sb->sb_mb;  in rack_adjust_sendmap_head()
11622 	rsm = tqhash_min(rack->r_ctl.tqh);  in rack_adjust_sendmap_head()
11628 	KASSERT((rsm->m == m),  in rack_adjust_sendmap_head()
11629 		("Rack:%p sb:%p rsm:%p -- first rsm mbuf not aligned to sb",  in rack_adjust_sendmap_head()
11631 	while (rsm->m && (rsm->m == m)) {  in rack_adjust_sendmap_head()
11637 		tm = sbsndmbuf(sb, (rsm->r_start - snd_una), &soff);  in rack_adjust_sendmap_head()
11638 		if ((rsm->orig_m_len != m->m_len) ||  in rack_adjust_sendmap_head()
11639 		    (rsm->orig_t_space != M_TRAILINGROOM(m))){  in rack_adjust_sendmap_head()
11643 			KASSERT((rsm->soff == 0),  in rack_adjust_sendmap_head()
11644 				("Rack:%p rsm:%p -- rsm at head but soff not zero",  in rack_adjust_sendmap_head()
11648 		if ((rsm->soff != soff) || (rsm->m != tm)) {  in rack_adjust_sendmap_head()
11657 		rsm->m = tm;  in rack_adjust_sendmap_head()
11658 		rsm->soff = soff;  in rack_adjust_sendmap_head()
11660 			rsm->orig_m_len = rsm->m->m_len;  in rack_adjust_sendmap_head()
11661 			rsm->orig_t_space = M_TRAILINGROOM(rsm->m);  in rack_adjust_sendmap_head()
11663 			rsm->orig_m_len = 0;  in rack_adjust_sendmap_head()
11664 			rsm->orig_t_space = 0;  in rack_adjust_sendmap_head()
11667 		rsm->m = sbsndmbuf(sb, (rsm->r_start - snd_una), &rsm->soff);  in rack_adjust_sendmap_head()
11668 		if (rsm->m) {  in rack_adjust_sendmap_head()
11669 			rsm->orig_m_len = rsm->m->m_len;  in rack_adjust_sendmap_head()
11670 			rsm->orig_t_space = M_TRAILINGROOM(rsm->m);  in rack_adjust_sendmap_head()
11672 			rsm->orig_m_len = 0;  in rack_adjust_sendmap_head()
11673 			rsm->orig_t_space = 0;  in rack_adjust_sendmap_head()
11676 		rsm = tqhash_next(rack->r_ctl.tqh, rsm);  in rack_adjust_sendmap_head()
11689 	if ((rack->rc_hybrid_mode == 0) &&  in rack_req_check_for_comp()
11690 	    (tcp_bblogging_point_on(rack->rc_tp, TCP_BBPOINT_REQ_LEVEL_LOGGING) == 0)) {  in rack_req_check_for_comp()
11695 		tcp_req_check_for_comp(rack->rc_tp, th_ack);  in rack_req_check_for_comp()
11705 	ent = tcp_req_find_a_req_that_is_completed_by(rack->rc_tp, th_ack, &i);  in rack_req_check_for_comp()
11719 		data = ent->end - ent->start;  in rack_req_check_for_comp()
11720 		laa = tcp_tv_to_lusectick(&rack->r_ctl.act_rcv_time);  in rack_req_check_for_comp()
11721 		if (ent->flags & TCP_TRK_TRACK_FLG_FSND) {  in rack_req_check_for_comp()
11722 			if (ent->first_send > ent->localtime)  in rack_req_check_for_comp()
11723 				ftim = ent->first_send;  in rack_req_check_for_comp()
11725 				ftim = ent->localtime;  in rack_req_check_for_comp()
11728 			ftim = ent->localtime;  in rack_req_check_for_comp()
11730 		if (laa > ent->localtime)  in rack_req_check_for_comp()
11731 			tim = laa - ftim;  in rack_req_check_for_comp()
11745 		if (ent == rack->r_ctl.rc_last_sft) {  in rack_req_check_for_comp()
11746 			rack->r_ctl.rc_last_sft = NULL;  in rack_req_check_for_comp()
11747 			if (rack->rc_hybrid_mode) {  in rack_req_check_for_comp()
11748 				rack->rc_catch_up = 0;  in rack_req_check_for_comp()
11749 				if (rack->cspr_is_fcc == 0)  in rack_req_check_for_comp()
11750 					rack->r_ctl.bw_rate_cap = 0;  in rack_req_check_for_comp()
11752 					rack->r_ctl.fillcw_cap = rack_fillcw_bw_cap;  in rack_req_check_for_comp()
11753 				rack->r_ctl.client_suggested_maxseg = 0;  in rack_req_check_for_comp()
11757 		tcp_req_log_req_info(rack->rc_tp, ent,  in rack_req_check_for_comp()
11760 		tcp_req_free_a_slot(rack->rc_tp, ent);  in rack_req_check_for_comp()
11761 		ent = tcp_req_find_a_req_that_is_completed_by(rack->rc_tp, th_ack, &i);  in rack_req_check_for_comp()
11770  * For ret_val if its 0 the TCP is locked, if its non-zero
11790 	rack = (struct tcp_rack *)tp->t_fb_ptr;  in rack_process_ack()
11791 	if (SEQ_GEQ(tp->snd_una, tp->iss + (65535 << tp->snd_scale))) {  in rack_process_ack()
11793 		tp->t_flags2 |= TF2_NO_ISS_CHECK;  in rack_process_ack()
11799 		if (tp->t_flags2 & TF2_NO_ISS_CHECK) {  in rack_process_ack()
11801 			seq_min = tp->snd_una - tp->max_sndwnd;  in rack_process_ack()
11804 			if (SEQ_GT(tp->iss + 1, tp->snd_una - tp->max_sndwnd)) {  in rack_process_ack()
11806 				seq_min = tp->iss + 1;  in rack_process_ack()
11813 				seq_min = tp->snd_una - tp->max_sndwnd;  in rack_process_ack()
11817 		if (SEQ_LT(th->th_ack, seq_min)) {  in rack_process_ack()
11824 			rack->r_wanted_output = 1;  in rack_process_ack()
11828 	if (SEQ_GT(th->th_ack, tp->snd_max)) {  in rack_process_ack()
11830 		rack->r_wanted_output = 1;  in rack_process_ack()
11833 	if (rack->gp_ready &&  in rack_process_ack()
11834 	    (rack->r_ctl.rc_hpts_flags & PACE_PKT_OUTPUT)) {  in rack_process_ack()
11837 	if (SEQ_GEQ(th->th_ack, tp->snd_una) || to->to_nsacks) {  in rack_process_ack()
11841 		in_rec = IN_FASTRECOVERY(tp->t_flags);  in rack_process_ack()
11842 		if (rack->rc_in_persist) {  in rack_process_ack()
11843 			tp->t_rxtshift = 0;  in rack_process_ack()
11844 			RACK_TCPT_RANGESET(tp->t_rxtcur, RACK_REXMTVAL(tp),  in rack_process_ack()
11845 				      rack_rto_min, rack_rto_max, rack->r_ctl.timer_slop);  in rack_process_ack()
11848 		if ((th->th_ack == tp->snd_una) &&  in rack_process_ack()
11849 		    (tiwin == tp->snd_wnd) &&  in rack_process_ack()
11851 		    ((to->to_flags & TOF_SACK) == 0)) {  in rack_process_ack()
11852 			rack_strike_dupack(rack, th->th_ack);  in rack_process_ack()
11855 		rack_log_ack(tp, to, th, ((in_rec == 0) && IN_FASTRECOVERY(tp->t_flags)),  in rack_process_ack()
11859 	if (__predict_false(SEQ_LEQ(th->th_ack, tp->snd_una))) {  in rack_process_ack()
11865 		if (SEQ_LT(th->th_ack, tp->snd_una) && (sbspace(&so->so_rcv) > ctf_fixed_maxseg(tp))) {  in rack_process_ack()
11866 			rack->r_ctl.rc_reorder_ts = tcp_tv_to_usectick(&rack->r_ctl.act_rcv_time);  in rack_process_ack()
11867 			if (rack->r_ctl.rc_reorder_ts == 0)  in rack_process_ack()
11868 				rack->r_ctl.rc_reorder_ts = 1;  in rack_process_ack()
11876 	if (tp->t_flags & TF_NEEDSYN) {  in rack_process_ack()
11878 		 * T/TCP: Connection was half-synchronized, and our SYN has  in rack_process_ack()
11880 		 * to non-starred state, increment snd_una for ACK of SYN,  in rack_process_ack()
11883 		tp->t_flags &= ~TF_NEEDSYN;  in rack_process_ack()
11884 		tp->snd_una++;  in rack_process_ack()
11886 		if ((tp->t_flags & (TF_RCVD_SCALE | TF_REQ_SCALE)) ==  in rack_process_ack()
11888 			tp->rcv_scale = tp->request_r_scale;  in rack_process_ack()
11892 	nsegs = max(1, m->m_pkthdr.lro_nsegs);  in rack_process_ack()
11897 		 * Any time we move the cum-ack forward clear  in rack_process_ack()
11898 		 * keep-alive tied probe-not-answered. The  in rack_process_ack()
11901 		rack->probe_not_answered = 0;  in rack_process_ack()
11911 	if ((tp->t_flags & TF_PREVVALID) &&  in rack_process_ack()
11912 	    ((tp->t_flags & TF_RCVD_TSTMP) == 0)) {  in rack_process_ack()
11913 		tp->t_flags &= ~TF_PREVVALID;  in rack_process_ack()
11914 		if (tp->t_rxtshift == 1 &&  in rack_process_ack()
11915 		    (int)(ticks - tp->t_badrxtwin) < 0)  in rack_process_ack()
11916 			rack_cong_signal(tp, CC_RTO_ERR, th->th_ack, __LINE__);  in rack_process_ack()
11920 		tp->t_rxtshift = 0;  in rack_process_ack()
11921 		RACK_TCPT_RANGESET(tp->t_rxtcur, RACK_REXMTVAL(tp),  in rack_process_ack()
11922 			      rack_rto_min, rack_rto_max, rack->r_ctl.timer_slop);  in rack_process_ack()
11923 		rack->rc_tlp_in_progress = 0;  in rack_process_ack()
11924 		rack->r_ctl.rc_tlp_cnt_out = 0;  in rack_process_ack()
11929 		if (rack->r_ctl.rc_hpts_flags & PACE_TMR_RXT)  in rack_process_ack()
11930 			rack_timer_cancel(tp, rack, rack->r_ctl.rc_rcvtime, __LINE__);  in rack_process_ack()
11932 		rack_req_check_for_comp(rack, th->th_ack);  in rack_process_ack()
11951 	 * (possibly backed-off) value.  in rack_process_ack()
11958 	if (IN_RECOVERY(tp->t_flags)) {  in rack_process_ack()
11959 		if (SEQ_LT(th->th_ack, tp->snd_recover) &&  in rack_process_ack()
11960 		    (SEQ_LT(th->th_ack, tp->snd_max))) {  in rack_process_ack()
11963 			rack_post_recovery(tp, th->th_ack);  in rack_process_ack()
11970 			p_cwnd = min(ctf_fixed_maxseg(tp), rack->r_ctl.rc_pace_min_segs);  in rack_process_ack()
11972 			p_cwnd += tp->snd_cwnd;  in rack_process_ack()
11974 	} else if ((rack->rto_from_rec == 1) &&  in rack_process_ack()
11975 		   SEQ_GEQ(th->th_ack, tp->snd_recover)) {  in rack_process_ack()
11978 		 * and never re-entered recovery. The timeout(s)  in rack_process_ack()
11982 		rack->rto_from_rec = 0;  in rack_process_ack()
11989 	rack_ack_received(tp, rack, th->th_ack, nsegs, CC_ACK, post_recovery);  in rack_process_ack()
11991 	    (tp->snd_cwnd > p_cwnd)) {  in rack_process_ack()
11992 		/* Must be non-newreno (cubic) getting too ahead of itself */  in rack_process_ack()
11993 		tp->snd_cwnd = p_cwnd;  in rack_process_ack()
11996 	acked_amount = min(acked, (int)sbavail(&so->so_snd));  in rack_process_ack()
11997 	tp->snd_wnd -= acked_amount;  in rack_process_ack()
11998 	mfree = sbcut_locked(&so->so_snd, acked_amount);  in rack_process_ack()
11999 	if ((sbused(&so->so_snd) == 0) &&  in rack_process_ack()
12001 	    (tp->t_state >= TCPS_FIN_WAIT_1) &&  in rack_process_ack()
12002 	    (tp->t_flags & TF_SENTFIN)) {  in rack_process_ack()
12011 	tp->snd_una = th->th_ack;  in rack_process_ack()
12013 	if (acked_amount && sbavail(&so->so_snd))  in rack_process_ack()
12014 		rack_adjust_sendmap_head(rack, &so->so_snd);  in rack_process_ack()
12015 	rack_log_wakeup(tp,rack, &so->so_snd, acked, 2);  in rack_process_ack()
12019 	if (SEQ_GT(tp->snd_una, tp->snd_recover))  in rack_process_ack()
12020 		tp->snd_recover = tp->snd_una;  in rack_process_ack()
12022 	if (SEQ_LT(tp->snd_nxt, tp->snd_max)) {  in rack_process_ack()
12023 		tp->snd_nxt = tp->snd_max;  in rack_process_ack()
12026 	    (rack->use_fixed_rate == 0) &&  in rack_process_ack()
12027 	    (rack->in_probe_rtt == 0) &&  in rack_process_ack()
12028 	    rack->rc_gp_dyn_mul &&  in rack_process_ack()
12029 	    rack->rc_always_pace) {  in rack_process_ack()
12033 	if (tp->snd_una == tp->snd_max) {  in rack_process_ack()
12035 		tp->t_flags &= ~TF_PREVVALID;  in rack_process_ack()
12036 		if (rack->r_ctl.rc_went_idle_time == 0)  in rack_process_ack()
12037 			rack->r_ctl.rc_went_idle_time = 1;  in rack_process_ack()
12038 		rack->r_ctl.retran_during_recovery = 0;  in rack_process_ack()
12039 		rack->r_ctl.dsack_byte_cnt = 0;  in rack_process_ack()
12041 		if (sbavail(&tptosocket(tp)->so_snd) == 0)  in rack_process_ack()
12042 			tp->t_acktime = 0;  in rack_process_ack()
12043 		rack_timer_cancel(tp, rack, rack->r_ctl.rc_rcvtime, __LINE__);  in rack_process_ack()
12044 		rack->rc_suspicious = 0;  in rack_process_ack()
12046 		rack->r_wanted_output = 1;  in rack_process_ack()
12047 		sack_filter_clear(&rack->r_ctl.rack_sf, tp->snd_una);  in rack_process_ack()
12048 		if ((tp->t_state >= TCPS_FIN_WAIT_1) &&  in rack_process_ack()
12049 		    (sbavail(&so->so_snd) == 0) &&  in rack_process_ack()
12050 		    (tp->t_flags2 & TF2_DROP_AF_DATA)) {  in rack_process_ack()
12052 			 * The socket was gone and the  in rack_process_ack()
12057 			/* tcp_close will kill the inp pre-log the Reset */  in rack_process_ack()
12074 	if (tcp_bblogging_on(rack->rc_tp)) {  in rack_log_collapse()
12083 		log.u_bbr.flex5 = rack->r_must_retran;  in rack_log_collapse()
12085 		log.u_bbr.flex7 = rack->rc_has_collapsed;  in rack_log_collapse()
12095 		log.u_bbr.inflight = ctf_flight_size(rack->rc_tp, rack->r_ctl.rc_sacked);  in rack_log_collapse()
12096 		TCP_LOG_EVENTP(rack->rc_tp, NULL,  in rack_log_collapse()
12097 		    &rack->rc_inp->inp_socket->so_rcv,  in rack_log_collapse()
12098 		    &rack->rc_inp->inp_socket->so_snd,  in rack_log_collapse()
12113 	tcp_trace_point(rack->rc_tp, TCP_TP_COLLAPSED_WND);  in rack_collapsed_window()
12114 	if ((rack->rc_has_collapsed == 0) ||  in rack_collapsed_window()
12115 	    (rack->r_ctl.last_collapse_point != (th_ack + rack->rc_tp->snd_wnd)))  in rack_collapsed_window()
12117 	rack->r_ctl.last_collapse_point = th_ack + rack->rc_tp->snd_wnd;  in rack_collapsed_window()
12118 	rack->r_ctl.high_collapse_point = rack->rc_tp->snd_max;  in rack_collapsed_window()
12119 	rack->rc_has_collapsed = 1;  in rack_collapsed_window()
12120 	rack->r_collapse_point_valid = 1;  in rack_collapsed_window()
12121 	rack_log_collapse(rack, 0, th_ack, rack->r_ctl.last_collapse_point, line, 1, 0, NULL);  in rack_collapsed_window()
12132 	tcp_trace_point(rack->rc_tp, TCP_TP_COLLAPSED_WND);  in rack_un_collapse_window()
12133 	rack->rc_has_collapsed = 0;  in rack_un_collapse_window()
12134 	rsm = tqhash_find(rack->r_ctl.tqh, rack->r_ctl.last_collapse_point);  in rack_un_collapse_window()
12137 		rack_log_collapse(rack, 0, 0, ctf_outstanding(rack->rc_tp), line, 0, 0, NULL);  in rack_un_collapse_window()
12141 	if (SEQ_GT(rack->r_ctl.last_collapse_point, rsm->r_start)) {  in rack_un_collapse_window()
12142 		rack_log_collapse(rack, rsm->r_start, rsm->r_end,  in rack_un_collapse_window()
12143 				  rack->r_ctl.last_collapse_point, line, 3, rsm->r_flags, rsm);  in rack_un_collapse_window()
12152 		rack_clone_rsm(rack, nrsm, rsm, rack->r_ctl.last_collapse_point);  in rack_un_collapse_window()
12154 		(void)tqhash_insert(rack->r_ctl.tqh, nrsm);  in rack_un_collapse_window()
12156 		if ((insret = tqhash_insert(rack->r_ctl.tqh, nrsm)) != 0) {  in rack_un_collapse_window()
12161 		rack_log_map_chg(rack->rc_tp, rack, NULL, rsm, nrsm, MAP_SPLIT,  in rack_un_collapse_window()
12162 				 rack->r_ctl.last_collapse_point, __LINE__);  in rack_un_collapse_window()
12163 		if (rsm->r_in_tmap) {  in rack_un_collapse_window()
12164 			TAILQ_INSERT_AFTER(&rack->r_ctl.rc_tmap, rsm, nrsm, r_tnext);  in rack_un_collapse_window()
12165 			nrsm->r_in_tmap = 1;  in rack_un_collapse_window()
12175 	TQHASH_FOREACH_FROM(nrsm, rack->r_ctl.tqh, rsm)  {  in rack_un_collapse_window()
12177 		nrsm->r_flags |= RACK_RWND_COLLAPSED;  in rack_un_collapse_window()
12178 		rack_log_collapse(rack, nrsm->r_start, nrsm->r_end, 0, line, 4, nrsm->r_flags, nrsm);  in rack_un_collapse_window()
12184 	rack_log_collapse(rack, cnt, split, ctf_outstanding(rack->rc_tp), line, 0, 0, NULL);  in rack_un_collapse_window()
12193 				  rack->r_ctl.rc_rcvtime, __LINE__);  in rack_handle_delayed_ack()
12194 		tp->t_flags |= TF_DELACK;  in rack_handle_delayed_ack()
12196 		rack->r_wanted_output = 1;  in rack_handle_delayed_ack()
12197 		tp->t_flags |= TF_ACKNOW;  in rack_handle_delayed_ack()
12209 	if (rack->r_fast_output) {  in rack_validate_fo_sendwin_up()
12217 		if ((out + rack->r_ctl.fsb.left_to_send) > tp->snd_wnd) {  in rack_validate_fo_sendwin_up()
12219 			if (out >= tp->snd_wnd) {  in rack_validate_fo_sendwin_up()
12221 				rack->r_fast_output = 0;  in rack_validate_fo_sendwin_up()
12224 				rack->r_ctl.fsb.left_to_send = tp->snd_wnd - out;  in rack_validate_fo_sendwin_up()
12225 				if (rack->r_ctl.fsb.left_to_send < ctf_fixed_maxseg(tp)) {  in rack_validate_fo_sendwin_up()
12227 					rack->r_fast_output = 0;  in rack_validate_fo_sendwin_up()
12236  * likely gone, return value of 0, the TCP is still
12254 	rack = (struct tcp_rack *)tp->t_fb_ptr;  in rack_process_data()
12255 	nsegs = max(1, m->m_pkthdr.lro_nsegs);  in rack_process_data()
12257 	    (SEQ_LT(tp->snd_wl1, th->th_seq) ||  in rack_process_data()
12258 	    (tp->snd_wl1 == th->th_seq && (SEQ_LT(tp->snd_wl2, th->th_ack) ||  in rack_process_data()
12259 	    (tp->snd_wl2 == th->th_ack && tiwin > tp->snd_wnd))))) {  in rack_process_data()
12262 		    tp->snd_wl2 == th->th_ack && tiwin > tp->snd_wnd)  in rack_process_data()
12264 		tp->snd_wnd = tiwin;  in rack_process_data()
12266 		tp->snd_wl1 = th->th_seq;  in rack_process_data()
12267 		tp->snd_wl2 = th->th_ack;  in rack_process_data()
12268 		if (tp->snd_wnd > tp->max_sndwnd)  in rack_process_data()
12269 			tp->max_sndwnd = tp->snd_wnd;  in rack_process_data()
12270 		rack->r_wanted_output = 1;  in rack_process_data()
12272 		if ((tp->snd_wl2 == th->th_ack) && (tiwin < tp->snd_wnd)) {  in rack_process_data()
12273 			tp->snd_wnd = tiwin;  in rack_process_data()
12275 			tp->snd_wl1 = th->th_seq;  in rack_process_data()
12276 			tp->snd_wl2 = th->th_ack;  in rack_process_data()
12279 	if (tp->snd_wnd < ctf_outstanding(tp))  in rack_process_data()
12281 		rack_collapsed_window(rack, ctf_outstanding(tp), th->th_ack, __LINE__);  in rack_process_data()
12282 	else if (rack->rc_has_collapsed)  in rack_process_data()
12284 	if ((rack->r_collapse_point_valid) &&  in rack_process_data()
12285 	    (SEQ_GT(th->th_ack, rack->r_ctl.high_collapse_point)))  in rack_process_data()
12286 		rack->r_collapse_point_valid = 0;  in rack_process_data()
12288 	if ((rack->rc_in_persist != 0) &&  in rack_process_data()
12289 	    (tp->snd_wnd >= min((rack->r_ctl.rc_high_rwnd/2),  in rack_process_data()
12290 				rack->r_ctl.rc_pace_min_segs))) {  in rack_process_data()
12291 		rack_exit_persist(tp, rack, rack->r_ctl.rc_rcvtime);  in rack_process_data()
12292 		tp->snd_nxt = tp->snd_max;  in rack_process_data()
12294 		rack->r_wanted_output = 1;  in rack_process_data()
12297 	if ((rack->rc_in_persist == 0) &&  in rack_process_data()
12298 	    (tp->snd_wnd < min((rack->r_ctl.rc_high_rwnd/2), rack->r_ctl.rc_pace_min_segs)) &&  in rack_process_data()
12299 	    TCPS_HAVEESTABLISHED(tp->t_state) &&  in rack_process_data()
12300 	    ((tp->snd_max == tp->snd_una) || rack->rc_has_collapsed) &&  in rack_process_data()
12301 	    sbavail(&tptosocket(tp)->so_snd) &&  in rack_process_data()
12302 	    (sbavail(&tptosocket(tp)->so_snd) > tp->snd_wnd)) {  in rack_process_data()
12309 		rack_enter_persist(tp, rack, rack->r_ctl.rc_rcvtime, tp->snd_una);  in rack_process_data()
12311 	if (tp->t_flags2 & TF2_DROP_AF_DATA) {  in rack_process_data()
12319 	tp->rcv_up = tp->rcv_nxt;  in rack_process_data()
12324 	 * This process logically involves adjusting tp->rcv_wnd as data is  in rack_process_data()
12329 	tfo_syn = ((tp->t_state == TCPS_SYN_RECEIVED) &&  in rack_process_data()
12330 	    (tp->t_flags & TF_FASTOPEN));  in rack_process_data()
12332 	    TCPS_HAVERCVDFIN(tp->t_state) == 0) {  in rack_process_data()
12333 		tcp_seq save_start = th->th_seq;  in rack_process_data()
12334 		tcp_seq save_rnxt  = tp->rcv_nxt;  in rack_process_data()
12349 		if (th->th_seq == tp->rcv_nxt &&  in rack_process_data()
12351 		    (TCPS_HAVEESTABLISHED(tp->t_state) ||  in rack_process_data()
12356 			if (so->so_rcv.sb_shlim) {  in rack_process_data()
12359 				if (counter_fo_get(so->so_rcv.sb_shlim, mcnt,  in rack_process_data()
12368 			tp->rcv_nxt += tlen;  in rack_process_data()
12370 			    ((tp->t_flags2 & TF2_FBYTES_COMPLETE) == 0) &&  in rack_process_data()
12371 			    (tp->t_fbyte_in == 0)) {  in rack_process_data()
12372 				tp->t_fbyte_in = ticks;  in rack_process_data()
12373 				if (tp->t_fbyte_in == 0)  in rack_process_data()
12374 					tp->t_fbyte_in = 1;  in rack_process_data()
12375 				if (tp->t_fbyte_out && tp->t_fbyte_in)  in rack_process_data()
12376 					tp->t_flags2 |= TF2_FBYTES_COMPLETE;  in rack_process_data()
12382 			if (so->so_rcv.sb_state & SBS_CANTRCVMORE) {  in rack_process_data()
12391 							so->so_rcv.sb_flags &= ~SB_AUTOSIZE;  in rack_process_data()
12396 					sbappendstream_locked(&so->so_rcv, m, 0);  in rack_process_data()
12398 			rack_log_wakeup(tp,rack, &so->so_rcv, tlen, 1);  in rack_process_data()
12402 			if (so->so_rcv.sb_shlim && appended != mcnt)  in rack_process_data()
12403 				counter_fo_release(so->so_rcv.sb_shlim,  in rack_process_data()
12404 				    mcnt - appended);  in rack_process_data()
12416 			tp->t_flags |= TF_ACKNOW;  in rack_process_data()
12417 			if (tp->t_flags & TF_WAKESOR) {  in rack_process_data()
12418 				tp->t_flags &= ~TF_WAKESOR;  in rack_process_data()
12423 		if ((tp->t_flags & TF_SACK_PERMIT) &&  in rack_process_data()
12425 		    TCPS_HAVEESTABLISHED(tp->t_state)) {  in rack_process_data()
12433 			} else if ((tlen > 0) && SEQ_GT(tp->rcv_nxt, save_rnxt)) {  in rack_process_data()
12434 				if ((tp->rcv_numsacks >= 1) &&  in rack_process_data()
12435 				    (tp->sackblks[0].end == save_start)) {  in rack_process_data()
12441 					    tp->sackblks[0].start,  in rack_process_data()
12442 					    tp->sackblks[0].end);  in rack_process_data()
12466 		if (TCPS_HAVERCVDFIN(tp->t_state) == 0) {  in rack_process_data()
12470 			 * If connection is half-synchronized (ie NEEDSYN  in rack_process_data()
12476 			if (tp->t_flags & TF_NEEDSYN) {  in rack_process_data()
12478 				    rack->r_ctl.rc_rcvtime, __LINE__);  in rack_process_data()
12479 				tp->t_flags |= TF_DELACK;  in rack_process_data()
12481 				tp->t_flags |= TF_ACKNOW;  in rack_process_data()
12483 			tp->rcv_nxt++;  in rack_process_data()
12485 		switch (tp->t_state) {  in rack_process_data()
12491 			tp->t_starttime = ticks;  in rack_process_data()
12495 			    rack->r_ctl.rc_rcvtime, __LINE__);  in rack_process_data()
12505 			    rack->r_ctl.rc_rcvtime, __LINE__);  in rack_process_data()
12511 			 * starting the time-wait timer, turning off the  in rack_process_data()
12516 			    rack->r_ctl.rc_rcvtime, __LINE__);  in rack_process_data()
12524 	if ((tp->t_flags & TF_ACKNOW) ||  in rack_process_data()
12525 	    (sbavail(&so->so_snd) > (tp->snd_max - tp->snd_una))) {  in rack_process_data()
12526 		rack->r_wanted_output = 1;  in rack_process_data()
12533  * have broken out the fast-data path also just like
12534  * the fast-ack.
12553 	if (__predict_false(th->th_seq != tp->rcv_nxt)) {  in rack_do_fastnewdata()
12556 	if (tiwin && tiwin != tp->snd_wnd) {  in rack_do_fastnewdata()
12559 	if (__predict_false((tp->t_flags & (TF_NEEDSYN | TF_NEEDFIN)))) {  in rack_do_fastnewdata()
12562 	if (__predict_false((to->to_flags & TOF_TS) &&  in rack_do_fastnewdata()
12563 	    (TSTMP_LT(to->to_tsval, tp->ts_recent)))) {  in rack_do_fastnewdata()
12566 	if (__predict_false((th->th_ack != tp->snd_una))) {  in rack_do_fastnewdata()
12569 	if (__predict_false(tlen > sbspace(&so->so_rcv))) {  in rack_do_fastnewdata()
12572 	if ((to->to_flags & TOF_TS) != 0 &&  in rack_do_fastnewdata()
12573 	    SEQ_LEQ(th->th_seq, tp->last_ack_sent)) {  in rack_do_fastnewdata()
12574 		tp->ts_recent_age = tcp_ts_getticks();  in rack_do_fastnewdata()
12575 		tp->ts_recent = to->to_tsval;  in rack_do_fastnewdata()
12577 	rack = (struct tcp_rack *)tp->t_fb_ptr;  in rack_do_fastnewdata()
12579 	 * This is a pure, in-sequence data packet with nothing on the  in rack_do_fastnewdata()
12582 	nsegs = max(1, m->m_pkthdr.lro_nsegs);  in rack_do_fastnewdata()
12585 	if (so->so_rcv.sb_shlim) {  in rack_do_fastnewdata()
12588 		if (counter_fo_get(so->so_rcv.sb_shlim, mcnt,  in rack_do_fastnewdata()
12597 	if (tp->rcv_numsacks)  in rack_do_fastnewdata()
12600 	tp->rcv_nxt += tlen;  in rack_do_fastnewdata()
12602 	    ((tp->t_flags2 & TF2_FBYTES_COMPLETE) == 0) &&  in rack_do_fastnewdata()
12603 	    (tp->t_fbyte_in == 0)) {  in rack_do_fastnewdata()
12604 		tp->t_fbyte_in = ticks;  in rack_do_fastnewdata()
12605 		if (tp->t_fbyte_in == 0)  in rack_do_fastnewdata()
12606 			tp->t_fbyte_in = 1;  in rack_do_fastnewdata()
12607 		if (tp->t_fbyte_out && tp->t_fbyte_in)  in rack_do_fastnewdata()
12608 			tp->t_flags2 |= TF2_FBYTES_COMPLETE;  in rack_do_fastnewdata()
12613 	tp->snd_wl1 = th->th_seq;  in rack_do_fastnewdata()
12617 	tp->rcv_up = tp->rcv_nxt;  in rack_do_fastnewdata()
12624 	if (so->so_rcv.sb_state & SBS_CANTRCVMORE) {  in rack_do_fastnewdata()
12633 				so->so_rcv.sb_flags &= ~SB_AUTOSIZE;  in rack_do_fastnewdata()
12638 			sbappendstream_locked(&so->so_rcv, m, 0);  in rack_do_fastnewdata()
12641 	rack_log_wakeup(tp,rack, &so->so_rcv, tlen, 1);  in rack_do_fastnewdata()
12645 	if (so->so_rcv.sb_shlim && mcnt != appended)  in rack_do_fastnewdata()
12646 		counter_fo_release(so->so_rcv.sb_shlim, mcnt - appended);  in rack_do_fastnewdata()
12649 	if (tp->snd_una == tp->snd_max)  in rack_do_fastnewdata()
12650 		sack_filter_clear(&rack->r_ctl.rack_sf, tp->snd_una);  in rack_do_fastnewdata()
12657  * in sequence to remain in the fast-path. We also add
12661  * slow-path.
12673 	if (__predict_false(SEQ_LEQ(th->th_ack, tp->snd_una))) {  in rack_fastack()
12677 	if (__predict_false(SEQ_GT(th->th_ack, tp->snd_max))) {  in rack_fastack()
12685 	if (__predict_false(tp->t_flags & (TF_NEEDSYN | TF_NEEDFIN))) {  in rack_fastack()
12689 	if ((to->to_flags & TOF_TS) && __predict_false(TSTMP_LT(to->to_tsval, tp->ts_recent))) {  in rack_fastack()
12693 	if (__predict_false(IN_RECOVERY(tp->t_flags))) {  in rack_fastack()
12697 	rack = (struct tcp_rack *)tp->t_fb_ptr;  in rack_fastack()
12698 	if (rack->r_ctl.rc_sacked) {  in rack_fastack()
12702 	/* Ok if we reach here, we can process a fast-ack */  in rack_fastack()
12703 	if (rack->gp_ready &&  in rack_fastack()
12704 	    (rack->r_ctl.rc_hpts_flags & PACE_PKT_OUTPUT)) {  in rack_fastack()
12707 	nsegs = max(1, m->m_pkthdr.lro_nsegs);  in rack_fastack()
12710 	if (tiwin != tp->snd_wnd) {  in rack_fastack()
12711 		tp->snd_wnd = tiwin;  in rack_fastack()
12713 		tp->snd_wl1 = th->th_seq;  in rack_fastack()
12714 		if (tp->snd_wnd > tp->max_sndwnd)  in rack_fastack()
12715 			tp->max_sndwnd = tp->snd_wnd;  in rack_fastack()
12718 	if ((rack->rc_in_persist != 0) &&  in rack_fastack()
12719 	    (tp->snd_wnd >= min((rack->r_ctl.rc_high_rwnd/2),  in rack_fastack()
12720 			       rack->r_ctl.rc_pace_min_segs))) {  in rack_fastack()
12724 	if ((rack->rc_in_persist == 0) &&  in rack_fastack()
12725 	    (tp->snd_wnd < min((rack->r_ctl.rc_high_rwnd/2), rack->r_ctl.rc_pace_min_segs)) &&  in rack_fastack()
12726 	    TCPS_HAVEESTABLISHED(tp->t_state) &&  in rack_fastack()
12727 	    ((tp->snd_max == tp->snd_una) || rack->rc_has_collapsed) &&  in rack_fastack()
12728 	    sbavail(&tptosocket(tp)->so_snd) &&  in rack_fastack()
12729 	    (sbavail(&tptosocket(tp)->so_snd) > tp->snd_wnd)) {  in rack_fastack()
12736 		rack_enter_persist(tp, rack, rack->r_ctl.rc_rcvtime, th->th_ack);  in rack_fastack()
12743 	if ((to->to_flags & TOF_TS) != 0 &&  in rack_fastack()
12744 	    SEQ_LEQ(th->th_seq, tp->last_ack_sent)) {  in rack_fastack()
12745 		tp->ts_recent_age = tcp_ts_getticks();  in rack_fastack()
12746 		tp->ts_recent = to->to_tsval;  in rack_fastack()
12756 	if ((tp->t_flags & TF_PREVVALID) &&  in rack_fastack()
12757 	    ((tp->t_flags & TF_RCVD_TSTMP) == 0)) {  in rack_fastack()
12758 		tp->t_flags &= ~TF_PREVVALID;  in rack_fastack()
12759 		if (tp->t_rxtshift == 1 &&  in rack_fastack()
12760 		    (int)(ticks - tp->t_badrxtwin) < 0)  in rack_fastack()
12761 			rack_cong_signal(tp, CC_RTO_ERR, th->th_ack, __LINE__);  in rack_fastack()
12781 		rack_ack_received(tp, rack, th->th_ack, nsegs, CC_ACK, 0);  in rack_fastack()
12783 		mfree = sbcut_locked(&so->so_snd, acked);  in rack_fastack()
12784 		tp->snd_una = th->th_ack;  in rack_fastack()
12786 		rack_adjust_sendmap_head(rack, &so->so_snd);  in rack_fastack()
12788 		rack_log_wakeup(tp,rack, &so->so_snd, acked, 2);  in rack_fastack()
12791 		tp->t_rxtshift = 0;  in rack_fastack()
12792 		RACK_TCPT_RANGESET(tp->t_rxtcur, RACK_REXMTVAL(tp),  in rack_fastack()
12793 			      rack_rto_min, rack_rto_max, rack->r_ctl.timer_slop);  in rack_fastack()
12794 		rack->rc_tlp_in_progress = 0;  in rack_fastack()
12795 		rack->r_ctl.rc_tlp_cnt_out = 0;  in rack_fastack()
12800 		if (rack->r_ctl.rc_hpts_flags & PACE_TMR_RXT)  in rack_fastack()
12801 			rack_timer_cancel(tp, rack, rack->r_ctl.rc_rcvtime, __LINE__);  in rack_fastack()
12804 		rack_req_check_for_comp(rack, th->th_ack);  in rack_fastack()
12812 	if (tp->snd_wnd < ctf_outstanding(tp)) {  in rack_fastack()
12814 		rack_collapsed_window(rack, ctf_outstanding(tp), th->th_ack, __LINE__);  in rack_fastack()
12815 	} else if (rack->rc_has_collapsed)  in rack_fastack()
12817 	if ((rack->r_collapse_point_valid) &&  in rack_fastack()
12818 	    (SEQ_GT(tp->snd_una, rack->r_ctl.high_collapse_point)))  in rack_fastack()
12819 		rack->r_collapse_point_valid = 0;  in rack_fastack()
12823 	tp->snd_wl2 = th->th_ack;  in rack_fastack()
12824 	tp->t_dupacks = 0;  in rack_fastack()
12830 	 * otherwise restart timer using current (possibly backed-off)  in rack_fastack()
12836 	    (rack->use_fixed_rate == 0) &&  in rack_fastack()
12837 	    (rack->in_probe_rtt == 0) &&  in rack_fastack()
12838 	    rack->rc_gp_dyn_mul &&  in rack_fastack()
12839 	    rack->rc_always_pace) {  in rack_fastack()
12843 	if (tp->snd_una == tp->snd_max) {  in rack_fastack()
12844 		tp->t_flags &= ~TF_PREVVALID;  in rack_fastack()
12845 		rack->r_ctl.retran_during_recovery = 0;  in rack_fastack()
12846 		rack->rc_suspicious = 0;  in rack_fastack()
12847 		rack->r_ctl.dsack_byte_cnt = 0;  in rack_fastack()
12848 		rack->r_ctl.rc_went_idle_time = tcp_get_usecs(NULL);  in rack_fastack()
12849 		if (rack->r_ctl.rc_went_idle_time == 0)  in rack_fastack()
12850 			rack->r_ctl.rc_went_idle_time = 1;  in rack_fastack()
12852 		if (sbavail(&tptosocket(tp)->so_snd) == 0)  in rack_fastack()
12853 			tp->t_acktime = 0;  in rack_fastack()
12854 		rack_timer_cancel(tp, rack, rack->r_ctl.rc_rcvtime, __LINE__);  in rack_fastack()
12856 	if (acked && rack->r_fast_output)  in rack_fastack()
12858 	if (sbavail(&so->so_snd)) {  in rack_fastack()
12859 		rack->r_wanted_output = 1;  in rack_fastack()
12866  * likely gone, return value of 0, the TCP is still
12887 	 * this is an acceptable SYN segment initialize tp->rcv_nxt and  in rack_do_syn_sent()
12888 	 * tp->irs if seg contains ack then advance tp->snd_una if seg  in rack_do_syn_sent()
12895 	    (SEQ_LEQ(th->th_ack, tp->iss) ||  in rack_do_syn_sent()
12896 	    SEQ_GT(th->th_ack, tp->snd_max))) {  in rack_do_syn_sent()
12916 	tp->irs = th->th_seq;  in rack_do_syn_sent()
12918 	rack = (struct tcp_rack *)tp->t_fb_ptr;  in rack_do_syn_sent()
12928 		if ((tp->t_flags & (TF_RCVD_SCALE | TF_REQ_SCALE)) ==  in rack_do_syn_sent()
12930 			tp->rcv_scale = tp->request_r_scale;  in rack_do_syn_sent()
12932 		tp->rcv_adv += min(tp->rcv_wnd,  in rack_do_syn_sent()
12933 		    TCP_MAXWIN << tp->rcv_scale);  in rack_do_syn_sent()
12938 		if ((tp->t_flags & TF_FASTOPEN) &&  in rack_do_syn_sent()
12939 		    (tp->snd_una != tp->snd_max)) {  in rack_do_syn_sent()
12941 			if (SEQ_LT(th->th_ack, tp->snd_max))  in rack_do_syn_sent()
12950 					  rack->r_ctl.rc_rcvtime, __LINE__);  in rack_do_syn_sent()
12951 			tp->t_flags |= TF_DELACK;  in rack_do_syn_sent()
12953 			rack->r_wanted_output = 1;  in rack_do_syn_sent()
12954 			tp->t_flags |= TF_ACKNOW;  in rack_do_syn_sent()
12959 		if (SEQ_GT(th->th_ack, tp->snd_una)) {  in rack_do_syn_sent()
12965 			 * ack-processing since the  in rack_do_syn_sent()
12966 			 * data stream in our send-map  in rack_do_syn_sent()
12972 			tp->snd_una++;  in rack_do_syn_sent()
12973 			if (tfo_partial && (SEQ_GT(tp->snd_max, tp->snd_una))) {  in rack_do_syn_sent()
12982 				rsm = tqhash_min(rack->r_ctl.tqh);  in rack_do_syn_sent()
12984 					if (rsm->r_flags & RACK_HAS_SYN) {  in rack_do_syn_sent()
12985 						rsm->r_flags &= ~RACK_HAS_SYN;  in rack_do_syn_sent()
12986 						rsm->r_start++;  in rack_do_syn_sent()
12988 					rack->r_ctl.rc_resend = rsm;  in rack_do_syn_sent()
12994 		 * SYN_SENT  --> ESTABLISHED SYN_SENT* --> FIN_WAIT_1  in rack_do_syn_sent()
12996 		tp->t_starttime = ticks;  in rack_do_syn_sent()
12997 		if (tp->t_flags & TF_NEEDFIN) {  in rack_do_syn_sent()
12999 			tp->t_flags &= ~TF_NEEDFIN;  in rack_do_syn_sent()
13009 		 * Received initial SYN in SYN-SENT[*] state => simultaneous  in rack_do_syn_sent()
13012 		 * half-synchronized. Otherwise, do 3-way handshake:  in rack_do_syn_sent()
13013 		 * SYN-SENT -> SYN-RECEIVED SYN-SENT* -> SYN-RECEIVED* If  in rack_do_syn_sent()
13016 		tp->t_flags |= (TF_ACKNOW | TF_NEEDSYN | TF_SONOTCONN);  in rack_do_syn_sent()
13020 	 * Advance th->th_seq to correspond to first data byte. If data,  in rack_do_syn_sent()
13023 	th->th_seq++;  in rack_do_syn_sent()
13024 	if (tlen > tp->rcv_wnd) {  in rack_do_syn_sent()
13025 		todrop = tlen - tp->rcv_wnd;  in rack_do_syn_sent()
13026 		m_adj(m, -todrop);  in rack_do_syn_sent()
13027 		tlen = tp->rcv_wnd;  in rack_do_syn_sent()
13032 	tp->snd_wl1 = th->th_seq - 1;  in rack_do_syn_sent()
13033 	tp->rcv_up = th->th_seq;  in rack_do_syn_sent()
13041 		/* For syn-sent we need to possibly update the rtt */  in rack_do_syn_sent()
13042 		if ((to->to_flags & TOF_TS) != 0 && to->to_tsecr) {  in rack_do_syn_sent()
13046 			t = (mcts - to->to_tsecr) * HPTS_USEC_IN_MSEC;  in rack_do_syn_sent()
13047 			if (!tp->t_rttlow || tp->t_rttlow > t)  in rack_do_syn_sent()
13048 				tp->t_rttlow = t;  in rack_do_syn_sent()
13049 			rack_log_rtt_sample_calc(rack, t, (to->to_tsecr * 1000), (mcts * 1000), 4);  in rack_do_syn_sent()
13056 		if (tp->t_state == TCPS_FIN_WAIT_1) {  in rack_do_syn_sent()
13073 				if (so->so_rcv.sb_state & SBS_CANTRCVMORE) {  in rack_do_syn_sent()
13090  * likely gone, return value of 0, the TCP is still
13103 	rack = (struct tcp_rack *)tp->t_fb_ptr;  in rack_do_syn_recv()
13106 	    (tp->t_fin_is_rst && (thflags & TH_FIN)))  in rack_do_syn_recv()
13109 	    (SEQ_LEQ(th->th_ack, tp->snd_una) ||  in rack_do_syn_recv()
13110 	    SEQ_GT(th->th_ack, tp->snd_max))) {  in rack_do_syn_recv()
13115 	if (tp->t_flags & TF_FASTOPEN) {  in rack_do_syn_recv()
13128 			/* non-initial SYN is ignored */  in rack_do_syn_recv()
13129 			if ((rack->r_ctl.rc_hpts_flags & PACE_TMR_RXT) ||  in rack_do_syn_recv()
13130 			    (rack->r_ctl.rc_hpts_flags & PACE_TMR_TLP) ||  in rack_do_syn_recv()
13131 			    (rack->r_ctl.rc_hpts_flags & PACE_TMR_RACK)) {  in rack_do_syn_recv()
13145 	if ((to->to_flags & TOF_TS) != 0 && tp->ts_recent &&  in rack_do_syn_recv()
13146 	    TSTMP_LT(to->to_tsval, tp->ts_recent)) {  in rack_do_syn_recv()
13151 	 * In the SYN-RECEIVED state, validate that the packet belongs to  in rack_do_syn_recv()
13157 	if (SEQ_LT(th->th_seq, tp->irs)) {  in rack_do_syn_recv()
13179 	if ((to->to_flags & TOF_TS) != 0 &&  in rack_do_syn_recv()
13180 	    SEQ_LEQ(th->th_seq, tp->last_ack_sent) &&  in rack_do_syn_recv()
13181 	    SEQ_LEQ(tp->last_ack_sent, th->th_seq + tlen +  in rack_do_syn_recv()
13183 		tp->ts_recent_age = tcp_ts_getticks();  in rack_do_syn_recv()
13184 		tp->ts_recent = to->to_tsval;  in rack_do_syn_recv()
13186 	tp->snd_wnd = tiwin;  in rack_do_syn_recv()
13189 	 * If the ACK bit is off:  if in SYN-RECEIVED state or SENDSYN flag  in rack_do_syn_recv()
13190 	 * is on (half-synchronized state), then queue data for later  in rack_do_syn_recv()
13194 		if (tp->t_flags & TF_FASTOPEN) {  in rack_do_syn_recv()
13201 	if (tp->t_flags & TF_SONOTCONN) {  in rack_do_syn_recv()
13202 		tp->t_flags &= ~TF_SONOTCONN;  in rack_do_syn_recv()
13206 	if ((tp->t_flags & (TF_RCVD_SCALE | TF_REQ_SCALE)) ==  in rack_do_syn_recv()
13208 		tp->rcv_scale = tp->request_r_scale;  in rack_do_syn_recv()
13211 	 * Make transitions: SYN-RECEIVED  -> ESTABLISHED SYN-RECEIVED* ->  in rack_do_syn_recv()
13212 	 * FIN-WAIT-1  in rack_do_syn_recv()
13214 	tp->t_starttime = ticks;  in rack_do_syn_recv()
13215 	if ((tp->t_flags & TF_FASTOPEN) && tp->t_tfo_pending) {  in rack_do_syn_recv()
13216 		tcp_fastopen_decrement_counter(tp->t_tfo_pending);  in rack_do_syn_recv()
13217 		tp->t_tfo_pending = NULL;  in rack_do_syn_recv()
13219 	if (tp->t_flags & TF_NEEDFIN) {  in rack_do_syn_recv()
13221 		tp->t_flags &= ~TF_NEEDFIN;  in rack_do_syn_recv()
13232 		if (!(tp->t_flags & TF_FASTOPEN))  in rack_do_syn_recv()
13240 	if (SEQ_GT(th->th_ack, tp->snd_una) && !(tp->t_flags & TF_NEEDSYN))  in rack_do_syn_recv()
13241 		tp->snd_una++;  in rack_do_syn_recv()
13249 		if (tp->t_flags & TF_WAKESOR) {  in rack_do_syn_recv()
13250 			tp->t_flags &= ~TF_WAKESOR;  in rack_do_syn_recv()
13255 	tp->snd_wl1 = th->th_seq - 1;  in rack_do_syn_recv()
13256 	/* For syn-recv we need to possibly update the rtt */  in rack_do_syn_recv()
13257 	if ((to->to_flags & TOF_TS) != 0 && to->to_tsecr) {  in rack_do_syn_recv()
13261 		t = (mcts - to->to_tsecr) * HPTS_USEC_IN_MSEC;  in rack_do_syn_recv()
13262 		if (!tp->t_rttlow || tp->t_rttlow > t)  in rack_do_syn_recv()
13263 			tp->t_rttlow = t;  in rack_do_syn_recv()
13264 		rack_log_rtt_sample_calc(rack, t, (to->to_tsecr * 1000), (mcts * 1000), 5);  in rack_do_syn_recv()
13271 	if (tp->t_state == TCPS_FIN_WAIT_1) {  in rack_do_syn_recv()
13288 			if (so->so_rcv.sb_state & SBS_CANTRCVMORE) {  in rack_do_syn_recv()
13304  * likely gone, return value of 0, the TCP is still
13318 	 * uni-directional data xfer.  If the packet has no control flags,  in rack_do_established()
13319 	 * is in-sequence, the window didn't change and we're not  in rack_do_established()
13323 	 * waiting for space.  If the length is non-zero and the ack didn't  in rack_do_established()
13324 	 * move, we're the receiver side.  If we're getting packets in-order  in rack_do_established()
13327 	 * hidden state-flags are also off. Since we check for  in rack_do_established()
13330 	rack = (struct tcp_rack *)tp->t_fb_ptr;  in rack_do_established()
13331 	if (__predict_true(((to->to_flags & TOF_SACK) == 0)) &&  in rack_do_established()
13334 	    __predict_true(th->th_seq == tp->rcv_nxt)) {  in rack_do_established()
13337 			    tiwin, nxt_pkt, rack->r_ctl.rc_rcvtime)) {  in rack_do_established()
13350 	    (tp->t_fin_is_rst && (thflags & TH_FIN)))  in rack_do_established()
13365 	if ((to->to_flags & TOF_TS) != 0 && tp->ts_recent &&  in rack_do_established()
13366 	    TSTMP_LT(to->to_tsval, tp->ts_recent)) {  in rack_do_established()
13387 	if ((to->to_flags & TOF_TS) != 0 &&  in rack_do_established()
13388 	    SEQ_LEQ(th->th_seq, tp->last_ack_sent) &&  in rack_do_established()
13389 	    SEQ_LEQ(tp->last_ack_sent, th->th_seq + tlen +  in rack_do_established()
13391 		tp->ts_recent_age = tcp_ts_getticks();  in rack_do_established()
13392 		tp->ts_recent = to->to_tsval;  in rack_do_established()
13395 	 * If the ACK bit is off:  if in SYN-RECEIVED state or SENDSYN flag  in rack_do_established()
13396 	 * is on (half-synchronized state), then queue data for later  in rack_do_established()
13400 		if (tp->t_flags & TF_NEEDSYN) {  in rack_do_established()
13404 		} else if (tp->t_flags & TF_ACKNOW) {  in rack_do_established()
13406 			((struct tcp_rack *)tp->t_fb_ptr)->r_wanted_output = 1;  in rack_do_established()
13419 	if (sbavail(&so->so_snd)) {  in rack_do_established()
13433  * likely gone, return value of 0, the TCP is still
13446 	    (tp->t_fin_is_rst && (thflags & TH_FIN)))  in rack_do_close_wait()
13460 	if ((to->to_flags & TOF_TS) != 0 && tp->ts_recent &&  in rack_do_close_wait()
13461 	    TSTMP_LT(to->to_tsval, tp->ts_recent)) {  in rack_do_close_wait()
13482 	if ((to->to_flags & TOF_TS) != 0 &&  in rack_do_close_wait()
13483 	    SEQ_LEQ(th->th_seq, tp->last_ack_sent) &&  in rack_do_close_wait()
13484 	    SEQ_LEQ(tp->last_ack_sent, th->th_seq + tlen +  in rack_do_close_wait()
13486 		tp->ts_recent_age = tcp_ts_getticks();  in rack_do_close_wait()
13487 		tp->ts_recent = to->to_tsval;  in rack_do_close_wait()
13490 	 * If the ACK bit is off:  if in SYN-RECEIVED state or SENDSYN flag  in rack_do_close_wait()
13491 	 * is on (half-synchronized state), then queue data for later  in rack_do_close_wait()
13495 		if (tp->t_flags & TF_NEEDSYN) {  in rack_do_close_wait()
13499 		} else if (tp->t_flags & TF_ACKNOW) {  in rack_do_close_wait()
13501 			((struct tcp_rack *)tp->t_fb_ptr)->r_wanted_output = 1;  in rack_do_close_wait()
13514 	if (sbavail(&so->so_snd)) {  in rack_do_close_wait()
13516 			rack_log_progress_event((struct tcp_rack *)tp->t_fb_ptr,  in rack_do_close_wait()
13532 	rack = (struct tcp_rack *)tp->t_fb_ptr;  in rack_check_data_after_close()
13533 	if (rack->rc_allow_data_af_clo == 0) {  in rack_check_data_after_close()
13536 		/* tcp_close will kill the inp pre-log the Reset */  in rack_check_data_after_close()
13543 	if (sbavail(&so->so_snd) == 0)  in rack_check_data_after_close()
13547 	tp->rcv_nxt = th->th_seq + *tlen;  in rack_check_data_after_close()
13548 	tp->t_flags2 |= TF2_DROP_AF_DATA;  in rack_check_data_after_close()
13549 	rack->r_wanted_output = 1;  in rack_check_data_after_close()
13556  * likely gone, return value of 0, the TCP is still
13571 	    (tp->t_fin_is_rst && (thflags & TH_FIN)))  in rack_do_fin_wait_1()
13585 	if ((to->to_flags & TOF_TS) != 0 && tp->ts_recent &&  in rack_do_fin_wait_1()
13586 	    TSTMP_LT(to->to_tsval, tp->ts_recent)) {  in rack_do_fin_wait_1()
13595 	 * are gone, then RST the other end.  in rack_do_fin_wait_1()
13597 	if ((tp->t_flags & TF_CLOSED) && tlen &&  in rack_do_fin_wait_1()
13614 	if ((to->to_flags & TOF_TS) != 0 &&  in rack_do_fin_wait_1()
13615 	    SEQ_LEQ(th->th_seq, tp->last_ack_sent) &&  in rack_do_fin_wait_1()
13616 	    SEQ_LEQ(tp->last_ack_sent, th->th_seq + tlen +  in rack_do_fin_wait_1()
13618 		tp->ts_recent_age = tcp_ts_getticks();  in rack_do_fin_wait_1()
13619 		tp->ts_recent = to->to_tsval;  in rack_do_fin_wait_1()
13622 	 * If the ACK bit is off:  if in SYN-RECEIVED state or SENDSYN flag  in rack_do_fin_wait_1()
13623 	 * is on (half-synchronized state), then queue data for later  in rack_do_fin_wait_1()
13627 		if (tp->t_flags & TF_NEEDSYN) {  in rack_do_fin_wait_1()
13630 		} else if (tp->t_flags & TF_ACKNOW) {  in rack_do_fin_wait_1()
13632 			((struct tcp_rack *)tp->t_fb_ptr)->r_wanted_output = 1;  in rack_do_fin_wait_1()
13655 		if (so->so_rcv.sb_state & SBS_CANTRCVMORE) {  in rack_do_fin_wait_1()
13664 	if (sbavail(&so->so_snd)) {  in rack_do_fin_wait_1()
13666 			rack_log_progress_event((struct tcp_rack *)tp->t_fb_ptr,  in rack_do_fin_wait_1()
13678  * likely gone, return value of 0, the TCP is still
13693 	    (tp->t_fin_is_rst && (thflags & TH_FIN)))  in rack_do_closing()
13707 	if ((to->to_flags & TOF_TS) != 0 && tp->ts_recent &&  in rack_do_closing()
13708 	    TSTMP_LT(to->to_tsval, tp->ts_recent)) {  in rack_do_closing()
13729 	if ((to->to_flags & TOF_TS) != 0 &&  in rack_do_closing()
13730 	    SEQ_LEQ(th->th_seq, tp->last_ack_sent) &&  in rack_do_closing()
13731 	    SEQ_LEQ(tp->last_ack_sent, th->th_seq + tlen +  in rack_do_closing()
13733 		tp->ts_recent_age = tcp_ts_getticks();  in rack_do_closing()
13734 		tp->ts_recent = to->to_tsval;  in rack_do_closing()
13737 	 * If the ACK bit is off:  if in SYN-RECEIVED state or SENDSYN flag  in rack_do_closing()
13738 	 * is on (half-synchronized state), then queue data for later  in rack_do_closing()
13742 		if (tp->t_flags & TF_NEEDSYN) {  in rack_do_closing()
13745 		} else if (tp->t_flags & TF_ACKNOW) {  in rack_do_closing()
13747 			((struct tcp_rack *)tp->t_fb_ptr)->r_wanted_output = 1;  in rack_do_closing()
13765 	if (sbavail(&so->so_snd)) {  in rack_do_closing()
13767 			rack_log_progress_event((struct tcp_rack *)tp->t_fb_ptr,  in rack_do_closing()
13779  * likely gone, return value of 0, the TCP is still
13794 	    (tp->t_fin_is_rst && (thflags & TH_FIN)))  in rack_do_lastack()
13808 	if ((to->to_flags & TOF_TS) != 0 && tp->ts_recent &&  in rack_do_lastack()
13809 	    TSTMP_LT(to->to_tsval, tp->ts_recent)) {  in rack_do_lastack()
13831 	if ((to->to_flags & TOF_TS) != 0 &&  in rack_do_lastack()
13832 	    SEQ_LEQ(th->th_seq, tp->last_ack_sent) &&  in rack_do_lastack()
13833 	    SEQ_LEQ(tp->last_ack_sent, th->th_seq + tlen +  in rack_do_lastack()
13835 		tp->ts_recent_age = tcp_ts_getticks();  in rack_do_lastack()
13836 		tp->ts_recent = to->to_tsval;  in rack_do_lastack()
13839 	 * If the ACK bit is off:  if in SYN-RECEIVED state or SENDSYN flag  in rack_do_lastack()
13840 	 * is on (half-synchronized state), then queue data for later  in rack_do_lastack()
13844 		if (tp->t_flags & TF_NEEDSYN) {  in rack_do_lastack()
13847 		} else if (tp->t_flags & TF_ACKNOW) {  in rack_do_lastack()
13849 			((struct tcp_rack *)tp->t_fb_ptr)->r_wanted_output = 1;  in rack_do_lastack()
13867 	if (sbavail(&so->so_snd)) {  in rack_do_lastack()
13869 			rack_log_progress_event((struct tcp_rack *)tp->t_fb_ptr,  in rack_do_lastack()
13881  * likely gone, return value of 0, the TCP is still
13897 	    (tp->t_fin_is_rst && (thflags & TH_FIN)))  in rack_do_fin_wait_2()
13911 	if ((to->to_flags & TOF_TS) != 0 && tp->ts_recent &&  in rack_do_fin_wait_2()
13912 	    TSTMP_LT(to->to_tsval, tp->ts_recent)) {  in rack_do_fin_wait_2()
13921 	 * are gone, then RST the other end.  in rack_do_fin_wait_2()
13923 	if ((tp->t_flags & TF_CLOSED) && tlen &&  in rack_do_fin_wait_2()
13940 	if ((to->to_flags & TOF_TS) != 0 &&  in rack_do_fin_wait_2()
13941 	    SEQ_LEQ(th->th_seq, tp->last_ack_sent) &&  in rack_do_fin_wait_2()
13942 	    SEQ_LEQ(tp->last_ack_sent, th->th_seq + tlen +  in rack_do_fin_wait_2()
13944 		tp->ts_recent_age = tcp_ts_getticks();  in rack_do_fin_wait_2()
13945 		tp->ts_recent = to->to_tsval;  in rack_do_fin_wait_2()
13948 	 * If the ACK bit is off:  if in SYN-RECEIVED state or SENDSYN flag  in rack_do_fin_wait_2()
13949 	 * is on (half-synchronized state), then queue data for later  in rack_do_fin_wait_2()
13953 		if (tp->t_flags & TF_NEEDSYN) {  in rack_do_fin_wait_2()
13956 		} else if (tp->t_flags & TF_ACKNOW) {  in rack_do_fin_wait_2()
13958 			((struct tcp_rack *)tp->t_fb_ptr)->r_wanted_output = 1;  in rack_do_fin_wait_2()
13971 	if (sbavail(&so->so_snd)) {  in rack_do_fin_wait_2()
13973 			rack_log_progress_event((struct tcp_rack *)tp->t_fb_ptr,  in rack_do_fin_wait_2()
13986 	rack->r_ctl.rack_rs.rs_flags = RACK_RTT_EMPTY;  in rack_clear_rate_sample()
13987 	rack->r_ctl.rack_rs.rs_rtt_cnt = 0;  in rack_clear_rate_sample()
13988 	rack->r_ctl.rack_rs.rs_rtt_tot = 0;  in rack_clear_rate_sample()
13999 	if (rack->rc_hybrid_mode &&  in rack_set_pace_segments()
14000 	    (rack->r_ctl.rc_pace_max_segs != 0) &&  in rack_set_pace_segments()
14002 	    (rack->r_ctl.rc_last_sft != NULL)) {  in rack_set_pace_segments()
14003 		rack->r_ctl.rc_last_sft->hybrid_flags &= ~TCP_HYBRID_PACING_SETMSS;  in rack_set_pace_segments()
14007 	orig_min = rack->r_ctl.rc_pace_min_segs;  in rack_set_pace_segments()
14008 	orig_max = rack->r_ctl.rc_pace_max_segs;  in rack_set_pace_segments()
14009 	user_max = ctf_fixed_maxseg(tp) * rack->rc_user_set_max_segs;  in rack_set_pace_segments()
14010 	if (ctf_fixed_maxseg(tp) != rack->r_ctl.rc_pace_min_segs)  in rack_set_pace_segments()
14012 	rack->r_ctl.rc_pace_min_segs = ctf_fixed_maxseg(tp);  in rack_set_pace_segments()
14013 	if (rack->use_fixed_rate || rack->rc_force_max_seg) {  in rack_set_pace_segments()
14014 		if (user_max != rack->r_ctl.rc_pace_max_segs)  in rack_set_pace_segments()
14017 	if (rack->rc_force_max_seg) {  in rack_set_pace_segments()
14018 		rack->r_ctl.rc_pace_max_segs = user_max;  in rack_set_pace_segments()
14019 	} else if (rack->use_fixed_rate) {  in rack_set_pace_segments()
14021 		if ((rack->r_ctl.crte == NULL) ||  in rack_set_pace_segments()
14022 		    (bw_est != rack->r_ctl.crte->rate)) {  in rack_set_pace_segments()
14023 			rack->r_ctl.rc_pace_max_segs = user_max;  in rack_set_pace_segments()
14029 			    (rack->r_ctl.rc_user_set_min_segs == 1))  in rack_set_pace_segments()
14034 				     rack->r_ctl.rc_pace_min_segs);  in rack_set_pace_segments()
14035 			rack->r_ctl.rc_pace_max_segs = tcp_get_pacing_burst_size_w_divisor(  in rack_set_pace_segments()
14037 				rack->r_ctl.crte, NULL, rack->r_ctl.pace_len_divisor);  in rack_set_pace_segments()
14039 	} else if (rack->rc_always_pace) {  in rack_set_pace_segments()
14040 		if (rack->r_ctl.gp_bw ||  in rack_set_pace_segments()
14041 		    rack->r_ctl.init_rate) {  in rack_set_pace_segments()
14046 			orig = rack->r_ctl.rc_pace_max_segs;  in rack_set_pace_segments()
14053 				rack->r_ctl.rc_pace_max_segs = rack_get_pacing_len(rack,  in rack_set_pace_segments()
14055 										   ctf_fixed_maxseg(rack->rc_tp));  in rack_set_pace_segments()
14057 				rack->r_ctl.rc_pace_max_segs = rack->r_ctl.rc_pace_min_segs;  in rack_set_pace_segments()
14058 			if (orig != rack->r_ctl.rc_pace_max_segs)  in rack_set_pace_segments()
14060 		} else if ((rack->r_ctl.gp_bw == 0) &&  in rack_set_pace_segments()
14061 			   (rack->r_ctl.rc_pace_max_segs == 0)) {  in rack_set_pace_segments()
14067 			rack->r_ctl.rc_pace_max_segs = rc_init_window(rack);  in rack_set_pace_segments()
14070 	if (rack->r_ctl.rc_pace_max_segs > PACE_MAX_IP_BYTES) {  in rack_set_pace_segments()
14072 		rack->r_ctl.rc_pace_max_segs = PACE_MAX_IP_BYTES;  in rack_set_pace_segments()
14092 	if (rack->r_is_v6) {  in rack_init_fsb_block()
14093 		rack->r_ctl.fsb.tcp_ip_hdr_len = sizeof(struct ip6_hdr) + sizeof(struct tcphdr);  in rack_init_fsb_block()
14094 		ip6 = (struct ip6_hdr *)rack->r_ctl.fsb.tcp_ip_hdr;  in rack_init_fsb_block()
14095 		if (tp->t_port) {  in rack_init_fsb_block()
14096 			rack->r_ctl.fsb.tcp_ip_hdr_len += sizeof(struct udphdr);  in rack_init_fsb_block()
14098 			udp->uh_sport = htons(V_tcp_udp_tunneling_port);  in rack_init_fsb_block()
14099 			udp->uh_dport = tp->t_port;  in rack_init_fsb_block()
14100 			rack->r_ctl.fsb.udp = udp;  in rack_init_fsb_block()
14101 			rack->r_ctl.fsb.th = (struct tcphdr *)(udp + 1);  in rack_init_fsb_block()
14104 			rack->r_ctl.fsb.th = (struct tcphdr *)(ip6 + 1);  in rack_init_fsb_block()
14105 			rack->r_ctl.fsb.udp = NULL;  in rack_init_fsb_block()
14107 		tcpip_fillheaders(rack->rc_inp,  in rack_init_fsb_block()
14108 				  tp->t_port,  in rack_init_fsb_block()
14109 				  ip6, rack->r_ctl.fsb.th);  in rack_init_fsb_block()
14110 		rack->r_ctl.fsb.hoplimit = in6_selecthlim(rack->rc_inp, NULL);  in rack_init_fsb_block()
14115 		rack->r_ctl.fsb.tcp_ip_hdr_len = sizeof(struct tcpiphdr);  in rack_init_fsb_block()
14116 		ip = (struct ip *)rack->r_ctl.fsb.tcp_ip_hdr;  in rack_init_fsb_block()
14117 		if (tp->t_port) {  in rack_init_fsb_block()
14118 			rack->r_ctl.fsb.tcp_ip_hdr_len += sizeof(struct udphdr);  in rack_init_fsb_block()
14120 			udp->uh_sport = htons(V_tcp_udp_tunneling_port);  in rack_init_fsb_block()
14121 			udp->uh_dport = tp->t_port;  in rack_init_fsb_block()
14122 			rack->r_ctl.fsb.udp = udp;  in rack_init_fsb_block()
14123 			rack->r_ctl.fsb.th = (struct tcphdr *)(udp + 1);  in rack_init_fsb_block()
14126 			rack->r_ctl.fsb.udp = NULL;  in rack_init_fsb_block()
14127 			rack->r_ctl.fsb.th = (struct tcphdr *)(ip + 1);  in rack_init_fsb_block()
14129 		tcpip_fillheaders(rack->rc_inp,  in rack_init_fsb_block()
14130 				  tp->t_port,  in rack_init_fsb_block()
14131 				  ip, rack->r_ctl.fsb.th);  in rack_init_fsb_block()
14132 		rack->r_ctl.fsb.hoplimit = tptoinpcb(tp)->inp_ip_ttl;  in rack_init_fsb_block()
14135 	rack->r_ctl.fsb.recwin = lmin(lmax(sbspace(&tptosocket(tp)->so_rcv), 0),  in rack_init_fsb_block()
14136 	    (long)TCP_MAXWIN << tp->rcv_scale);  in rack_init_fsb_block()
14137 	rack->r_fsb_inited = 1;  in rack_init_fsb_block()
14148 …rack->r_ctl.fsb.tcp_ip_hdr_len = sizeof(struct ip6_hdr) + sizeof(struct tcphdr) + sizeof(struct ud…  in rack_init_fsb()
14150 	rack->r_ctl.fsb.tcp_ip_hdr_len = sizeof(struct tcpiphdr) + sizeof(struct udphdr);  in rack_init_fsb()
14152 	rack->r_ctl.fsb.tcp_ip_hdr = malloc(rack->r_ctl.fsb.tcp_ip_hdr_len,  in rack_init_fsb()
14154 	if (rack->r_ctl.fsb.tcp_ip_hdr == NULL) {  in rack_init_fsb()
14157 	rack->r_fsb_inited = 0;  in rack_init_fsb()
14166 	 * 20 - Initial round setup  in rack_log_hystart_event()
14167 	 * 21 - Rack declares a new round.  in rack_log_hystart_event()
14171 	tp = rack->rc_tp;  in rack_log_hystart_event()
14177 		log.u_bbr.flex1 = rack->r_ctl.current_round;  in rack_log_hystart_event()
14178 		log.u_bbr.flex2 = rack->r_ctl.roundends;  in rack_log_hystart_event()
14180 		log.u_bbr.flex4 = tp->snd_max;  in rack_log_hystart_event()
14183 		log.u_bbr.cur_del_rate = rack->rc_tp->t_sndbytes;  in rack_log_hystart_event()
14184 		log.u_bbr.delRate = rack->rc_tp->t_snd_rxt_bytes;  in rack_log_hystart_event()
14186 		    &tptosocket(tp)->so_rcv,  in rack_log_hystart_event()
14187 		    &tptosocket(tp)->so_snd,  in rack_log_hystart_event()
14196 	rack->rack_deferred_inited = 1;  in rack_deferred_init()
14197 	rack->r_ctl.roundends = tp->snd_max;  in rack_deferred_init()
14198 	rack->r_ctl.rc_high_rwnd = tp->snd_wnd;  in rack_deferred_init()
14199 	rack->r_ctl.cwnd_to_use = tp->snd_cwnd;  in rack_deferred_init()
14213 	 * 1 - Use full sized retransmits i.e. limit  in rack_init_retransmit_value()
14217 	 * 2 - Use pacer min granularity as a guide to  in rack_init_retransmit_value()
14225 	 * 0 - The rack default 1 MSS (anything not 0/1/2  in rack_init_retransmit_value()
14230 		rack->full_size_rxt = 1;  in rack_init_retransmit_value()
14231 		rack->shape_rxt_to_pacing_min  = 0;  in rack_init_retransmit_value()
14233 		rack->full_size_rxt = 0;  in rack_init_retransmit_value()
14234 		rack->shape_rxt_to_pacing_min  = 1;  in rack_init_retransmit_value()
14236 		rack->full_size_rxt = 0;  in rack_init_retransmit_value()
14237 		rack->shape_rxt_to_pacing_min  = 0;  in rack_init_retransmit_value()
14247 	if (tcp_bblogging_on(rack->rc_tp)) {  in rack_log_chg_info()
14270 	rack = (struct tcp_rack *)tp->t_fb_ptr;  in rack_chg_query()
14271 	switch (reqr->req) {  in rack_chg_query()
14273 		if ((reqr->req_param == tp->snd_max) ||  in rack_chg_query()
14274 		    (tp->snd_max == tp->snd_una)){  in rack_chg_query()
14278 		rsm = tqhash_find(rack->r_ctl.tqh, reqr->req_param);  in rack_chg_query()
14280 			/* Can't find that seq -- unlikely */  in rack_chg_query()
14283 		reqr->sendmap_start = rsm->r_start;  in rack_chg_query()
14284 		reqr->sendmap_end = rsm->r_end;  in rack_chg_query()
14285 		reqr->sendmap_send_cnt = rsm->r_rtr_cnt;  in rack_chg_query()
14286 		reqr->sendmap_fas = rsm->r_fas;  in rack_chg_query()
14287 		if (reqr->sendmap_send_cnt > SNDMAP_NRTX)  in rack_chg_query()
14288 			reqr->sendmap_send_cnt = SNDMAP_NRTX;  in rack_chg_query()
14289 		for(i=0; i<reqr->sendmap_send_cnt; i++)  in rack_chg_query()
14290 			reqr->sendmap_time[i] = rsm->r_tim_lastsent[i];  in rack_chg_query()
14291 		reqr->sendmap_ack_arrival = rsm->r_ack_arrival;  in rack_chg_query()
14292 		reqr->sendmap_flags = rsm->r_flags & SNDMAP_MASK;  in rack_chg_query()
14293 		reqr->sendmap_r_rtr_bytes = rsm->r_rtr_bytes;  in rack_chg_query()
14294 		reqr->sendmap_dupacks = rsm->r_dupack;  in rack_chg_query()
14296 				  rsm->r_start,  in rack_chg_query()
14297 				  rsm->r_end,  in rack_chg_query()
14298 				  rsm->r_flags);  in rack_chg_query()
14302 		if (rack->r_ctl.rc_hpts_flags == 0) {  in rack_chg_query()
14306 		reqr->timer_hpts_flags = rack->r_ctl.rc_hpts_flags;  in rack_chg_query()
14307 		if (rack->r_ctl.rc_hpts_flags & PACE_PKT_OUTPUT) {  in rack_chg_query()
14308 			reqr->timer_pacing_to = rack->r_ctl.rc_last_output_to;  in rack_chg_query()
14310 		if (rack->r_ctl.rc_hpts_flags & PACE_TMR_MASK) {  in rack_chg_query()
14311 			reqr->timer_timer_exp = rack->r_ctl.rc_timer_exp;  in rack_chg_query()
14314 				  rack->r_ctl.rc_hpts_flags,  in rack_chg_query()
14315 				  rack->r_ctl.rc_last_output_to,  in rack_chg_query()
14316 				  rack->r_ctl.rc_timer_exp);  in rack_chg_query()
14321 		reqr->rack_num_dsacks = rack->r_ctl.num_dsack;  in rack_chg_query()
14322 		reqr->rack_reorder_ts = rack->r_ctl.rc_reorder_ts;  in rack_chg_query()
14324 		reqr->rack_rxt_last_time = rack->r_ctl.rc_tlp_rxt_last_time;  in rack_chg_query()
14325 		reqr->rack_min_rtt = rack->r_ctl.rc_rack_min_rtt;  in rack_chg_query()
14326 		reqr->rack_rtt = rack->rc_rack_rtt;  in rack_chg_query()
14327 		reqr->rack_tmit_time = rack->r_ctl.rc_rack_tmit_time;  in rack_chg_query()
14328 		reqr->rack_srtt_measured = rack->rc_srtt_measure_made;  in rack_chg_query()
14330 		reqr->rack_sacked = rack->r_ctl.rc_sacked;  in rack_chg_query()
14331 		reqr->rack_holes_rxt = rack->r_ctl.rc_holes_rxt;  in rack_chg_query()
14332 		reqr->rack_prr_delivered = rack->r_ctl.rc_prr_delivered;  in rack_chg_query()
14333 		reqr->rack_prr_recovery_fs = rack->r_ctl.rc_prr_recovery_fs;  in rack_chg_query()
14334 		reqr->rack_prr_sndcnt = rack->r_ctl.rc_prr_sndcnt;  in rack_chg_query()
14335 		reqr->rack_prr_out = rack->r_ctl.rc_prr_out;  in rack_chg_query()
14337 		reqr->rack_tlp_out = rack->rc_tlp_in_progress;  in rack_chg_query()
14338 		reqr->rack_tlp_cnt_out = rack->r_ctl.rc_tlp_cnt_out;  in rack_chg_query()
14339 		if (rack->rc_in_persist) {  in rack_chg_query()
14340 			reqr->rack_time_went_idle = rack->r_ctl.rc_went_idle_time;  in rack_chg_query()
14341 			reqr->rack_in_persist = 1;  in rack_chg_query()
14343 			reqr->rack_time_went_idle = 0;  in rack_chg_query()
14344 			reqr->rack_in_persist = 0;  in rack_chg_query()
14346 		if (rack->r_wanted_output)  in rack_chg_query()
14347 			reqr->rack_wanted_output = 1;  in rack_chg_query()
14349 			reqr->rack_wanted_output = 0;  in rack_chg_query()
14353 		return (-EINVAL);  in rack_chg_query()
14372 	rack = (struct tcp_rack *)tp->t_fb_ptr;  in rack_switch_failed()
14374 	if  (rack->r_mbuf_queue || rack->rc_always_pace || rack->r_use_cmp_ack)  in rack_switch_failed()
14375 		tp->t_flags2 |= TF2_SUPPORTS_MBUFQ;  in rack_switch_failed()
14377 		tp->t_flags2 &= ~TF2_SUPPORTS_MBUFQ;  in rack_switch_failed()
14378 	if (rack->r_use_cmp_ack && TCPS_HAVEESTABLISHED(tp->t_state))  in rack_switch_failed()
14379 		tp->t_flags2 |= TF2_MBUF_ACKCMP;  in rack_switch_failed()
14380 	if (tp->t_in_hpts > IHPTS_NONE) {  in rack_switch_failed()
14385 	if (rack->r_ctl.rc_hpts_flags & PACE_PKT_OUTPUT) {  in rack_switch_failed()
14386 		if (TSTMP_GT(rack->r_ctl.rc_last_output_to, cts)) {  in rack_switch_failed()
14387 			toval = rack->r_ctl.rc_last_output_to - cts;  in rack_switch_failed()
14392 	} else if (rack->r_ctl.rc_hpts_flags & PACE_TMR_MASK) {  in rack_switch_failed()
14393 		if (TSTMP_GT(rack->r_ctl.rc_timer_exp, cts)) {  in rack_switch_failed()
14394 			toval = rack->r_ctl.rc_timer_exp - cts;  in rack_switch_failed()
14413 	 * to not refer to tp->t_fb_ptr. This has the old rack  in rack_init_outstanding()
14419 	if (tp->t_fb->tfb_chg_query == NULL) {  in rack_init_outstanding()
14427 		rsm->r_no_rtt_allowed = 1;  in rack_init_outstanding()
14428 		rsm->r_tim_lastsent[0] = rack_to_usec_ts(&rack->r_ctl.act_rcv_time);  in rack_init_outstanding()
14429 		rsm->r_rtr_cnt = 1;  in rack_init_outstanding()
14430 		rsm->r_rtr_bytes = 0;  in rack_init_outstanding()
14431 		if (tp->t_flags & TF_SENTFIN)  in rack_init_outstanding()
14432 			rsm->r_flags |= RACK_HAS_FIN;  in rack_init_outstanding()
14433 		rsm->r_end = tp->snd_max;  in rack_init_outstanding()
14434 		if (tp->snd_una == tp->iss) {  in rack_init_outstanding()
14436 			rsm->r_flags |= RACK_HAS_SYN;  in rack_init_outstanding()
14437 			rsm->r_start = tp->iss;  in rack_init_outstanding()
14438 			rsm->r_end = rsm->r_start + (tp->snd_max - tp->snd_una);  in rack_init_outstanding()
14440 			rsm->r_start = tp->snd_una;  in rack_init_outstanding()
14441 		rsm->r_dupack = 0;  in rack_init_outstanding()
14442 		if (rack->rc_inp->inp_socket->so_snd.sb_mb != NULL) {  in rack_init_outstanding()
14443 			rsm->m = sbsndmbuf(&rack->rc_inp->inp_socket->so_snd, 0, &rsm->soff);  in rack_init_outstanding()
14444 			if (rsm->m) {  in rack_init_outstanding()
14445 				rsm->orig_m_len = rsm->m->m_len;  in rack_init_outstanding()
14446 				rsm->orig_t_space = M_TRAILINGROOM(rsm->m);  in rack_init_outstanding()
14448 				rsm->orig_m_len = 0;  in rack_init_outstanding()
14449 				rsm->orig_t_space = 0;  in rack_init_outstanding()
14453 			 * This can happen if we have a stand-alone FIN or  in rack_init_outstanding()
14456 			rsm->m = NULL;  in rack_init_outstanding()
14457 			rsm->orig_m_len = 0;  in rack_init_outstanding()
14458 			rsm->orig_t_space = 0;  in rack_init_outstanding()
14459 			rsm->soff = 0;  in rack_init_outstanding()
14462 		if ((insret = tqhash_insert(rack->r_ctl.tqh, rsm)) != 0) {  in rack_init_outstanding()
14467 		(void)tqhash_insert(rack->r_ctl.tqh, rsm);  in rack_init_outstanding()
14469 		TAILQ_INSERT_TAIL(&rack->r_ctl.rc_tmap, rsm, r_tnext);  in rack_init_outstanding()
14470 		rsm->r_in_tmap = 1;  in rack_init_outstanding()
14477 		at = tp->snd_una;  in rack_init_outstanding()
14478 		while (at != tp->snd_max) {  in rack_init_outstanding()
14482 			if ((*tp->t_fb->tfb_chg_query)(tp, &qr) == 0)  in rack_init_outstanding()
14494 			rsm->r_dupack = qr.sendmap_dupacks;  in rack_init_outstanding()
14495 			rsm->r_start = qr.sendmap_start;  in rack_init_outstanding()
14496 			rsm->r_end = qr.sendmap_end;  in rack_init_outstanding()
14498 				rsm->r_fas = qr.sendmap_end;  in rack_init_outstanding()
14500 				rsm->r_fas = rsm->r_start - tp->snd_una;  in rack_init_outstanding()
14506 			rsm->r_flags = qr.sendmap_flags & SNDMAP_MASK;  in rack_init_outstanding()
14507 			rsm->r_rtr_bytes = qr.sendmap_r_rtr_bytes;  in rack_init_outstanding()
14508 			rsm->r_rtr_cnt = qr.sendmap_send_cnt;  in rack_init_outstanding()
14509 			rsm->r_ack_arrival = qr.sendmap_ack_arrival;  in rack_init_outstanding()
14510 			for (i=0 ; i<rsm->r_rtr_cnt; i++)  in rack_init_outstanding()
14511 				rsm->r_tim_lastsent[i]	= qr.sendmap_time[i];  in rack_init_outstanding()
14512 			rsm->m = sbsndmbuf(&rack->rc_inp->inp_socket->so_snd,  in rack_init_outstanding()
14513 					   (rsm->r_start - tp->snd_una), &rsm->soff);  in rack_init_outstanding()
14514 			if (rsm->m) {  in rack_init_outstanding()
14515 				rsm->orig_m_len = rsm->m->m_len;  in rack_init_outstanding()
14516 				rsm->orig_t_space = M_TRAILINGROOM(rsm->m);  in rack_init_outstanding()
14518 				rsm->orig_m_len = 0;  in rack_init_outstanding()
14519 				rsm->orig_t_space = 0;  in rack_init_outstanding()
14522 			if ((insret = tqhash_insert(rack->r_ctl.tqh, rsm)) != 0) {  in rack_init_outstanding()
14527 			(void)tqhash_insert(rack->r_ctl.tqh, rsm);  in rack_init_outstanding()
14529 			if ((rsm->r_flags & RACK_ACKED) == 0)  {  in rack_init_outstanding()
14530 				TAILQ_FOREACH(ersm, &rack->r_ctl.rc_tmap, r_tnext) {  in rack_init_outstanding()
14531 					if (ersm->r_tim_lastsent[(ersm->r_rtr_cnt-1)] >  in rack_init_outstanding()
14532 					    rsm->r_tim_lastsent[(rsm->r_rtr_cnt-1)]) {  in rack_init_outstanding()
14539 						rsm->r_in_tmap = 1;  in rack_init_outstanding()
14544 				if (rsm->r_in_tmap == 0) {  in rack_init_outstanding()
14548 					TAILQ_INSERT_TAIL(&rack->r_ctl.rc_tmap, rsm, r_tnext);  in rack_init_outstanding()
14549 					rsm->r_in_tmap = 1;  in rack_init_outstanding()
14552 				if ((rack->r_ctl.rc_sacklast == NULL) ||  in rack_init_outstanding()
14553 				    (SEQ_GT(rsm->r_end, rack->r_ctl.rc_sacklast->r_end))) {  in rack_init_outstanding()
14554 					rack->r_ctl.rc_sacklast = rsm;  in rack_init_outstanding()
14558 					  rsm->r_start,  in rack_init_outstanding()
14559 					  rsm->r_end,  in rack_init_outstanding()
14560 					  rsm->r_flags);  in rack_init_outstanding()
14581 	 * will be tp->t_fb_ptr. If its a stack switch that  in rack_init()
14585 	if (ptr == &tp->t_fb_ptr)  in rack_init()
14601 	rack->r_ctl.tqh = malloc(sizeof(struct tailq_hash), M_TCPFSB, M_NOWAIT);  in rack_init()
14602 	if (rack->r_ctl.tqh == NULL) {  in rack_init()
14606 	tqhash_init(rack->r_ctl.tqh);  in rack_init()
14607 	TAILQ_INIT(&rack->r_ctl.rc_free);  in rack_init()
14608 	TAILQ_INIT(&rack->r_ctl.rc_tmap);  in rack_init()
14609 	rack->rc_tp = tp;  in rack_init()
14610 	rack->rc_inp = inp;  in rack_init()
14612 	rack->r_is_v6 = (inp->inp_vflag & INP_IPV6) != 0;  in rack_init()
14629 	rack->rc_new_rnd_needed = 1;  in rack_init()
14630 	rack->r_ctl.rc_split_limit = V_tcp_map_split_limit;  in rack_init()
14633 	rack->r_ctl.rc_saved_beta.newreno_flags |= CC_NEWRENO_BETA_ECN_ENABLED;  in rack_init()
14634 	rack->r_ctl.rc_reorder_fade = rack_reorder_fade;  in rack_init()
14635 	rack->rc_allow_data_af_clo = rack_ignore_data_after_close;  in rack_init()
14636 	rack->r_ctl.rc_tlp_threshold = rack_tlp_thresh;  in rack_init()
14638 		rack->rc_pace_to_cwnd = 1;  in rack_init()
14640 		rack->r_ctl.rc_user_set_min_segs = rack_pacing_min_seg;  in rack_init()
14642 		rack->use_rack_rr = 1;  in rack_init()
14644 		rack->rc_pace_dnd = 1;  in rack_init()
14647 		tp->t_delayed_ack = 1;  in rack_init()
14649 		tp->t_delayed_ack = 0;  in rack_init()
14652 		tp->t_flags2 |= TF2_TCP_ACCOUNTING;  in rack_init()
14655 	rack->r_ctl.pcm_i.cnt_alloc = RACK_DEFAULT_PCM_ARRAY;  in rack_init()
14656 	sz = (sizeof(struct rack_pcm_stats) * rack->r_ctl.pcm_i.cnt_alloc);  in rack_init()
14657 	rack->r_ctl.pcm_s = malloc(sz,M_TCPPCM, M_NOWAIT);  in rack_init()
14658 	if (rack->r_ctl.pcm_s == NULL) {  in rack_init()
14659 		rack->r_ctl.pcm_i.cnt_alloc = 0;  in rack_init()
14662 	rack->r_ctl.side_chan_dis_mask = tcp_sidechannel_disable_mask;  in rack_init()
14664 	rack->r_ctl.rack_per_upper_bound_ss = (uint8_t)rack_per_upper_bound_ss;  in rack_init()
14665 	rack->r_ctl.rack_per_upper_bound_ca = (uint8_t)rack_per_upper_bound_ca;  in rack_init()
14667 		rack->rack_enable_scwnd = 1;  in rack_init()
14668 	rack->r_ctl.pace_len_divisor = rack_default_pacing_divisor;  in rack_init()
14669 	rack->rc_user_set_max_segs = rack_hptsi_segments;  in rack_init()
14670 	rack->r_ctl.max_reduction = rack_max_reduce;  in rack_init()
14671 	rack->rc_force_max_seg = 0;  in rack_init()
14672 	TAILQ_INIT(&rack->r_ctl.opt_list);  in rack_init()
14673 	rack->r_ctl.rc_saved_beta.beta = V_newreno_beta_ecn;  in rack_init()
14674 	rack->r_ctl.rc_saved_beta.beta_ecn = V_newreno_beta_ecn;  in rack_init()
14676 		rack->rack_hibeta = 1;  in rack_init()
14679 			rack->r_ctl.rc_saved_beta.beta = rack_hibeta_setting;  in rack_init()
14680 			rack->r_ctl.saved_hibeta = rack_hibeta_setting;  in rack_init()
14683 		rack->r_ctl.saved_hibeta = 50;  in rack_init()
14688 	 * will never have all 1's in ms :-)  in rack_init()
14690 	rack->r_ctl.last_tm_mark = 0xffffffffffffffff;  in rack_init()
14691 	rack->r_ctl.rc_reorder_shift = rack_reorder_thresh;  in rack_init()
14692 	rack->r_ctl.rc_pkt_delay = rack_pkt_delay;  in rack_init()
14693 	rack->r_ctl.rc_tlp_cwnd_reduce = rack_lower_cwnd_at_tlp;  in rack_init()
14694 	rack->r_ctl.rc_lowest_us_rtt = 0xffffffff;  in rack_init()
14695 	rack->r_ctl.rc_highest_us_rtt = 0;  in rack_init()
14696 	rack->r_ctl.bw_rate_cap = rack_bw_rate_cap;  in rack_init()
14697 	rack->pcm_enabled = rack_pcm_is_enabled;  in rack_init()
14699 		rack->r_ctl.fillcw_cap = rack_fillcw_bw_cap;  in rack_init()
14700 	rack->r_ctl.timer_slop = TICKS_2_USEC(tcp_rexmit_slop);  in rack_init()
14702 		rack->r_use_cmp_ack = 1;  in rack_init()
14704 		rack->rack_no_prr = 1;  in rack_init()
14706 		rack->rc_gp_no_rec_chg = 1;  in rack_init()
14708 		rack->r_ctl.pacing_method |= RACK_REG_PACING;  in rack_init()
14709 		rack->rc_always_pace = 1;  in rack_init()
14710 		if (rack->rack_hibeta)  in rack_init()
14713 		rack->rc_always_pace = 0;  in rack_init()
14714 	if (rack_enable_mqueue_for_nonpaced || rack->r_use_cmp_ack)  in rack_init()
14715 		rack->r_mbuf_queue = 1;  in rack_init()
14717 		rack->r_mbuf_queue = 0;  in rack_init()
14720 		rack->r_limit_scw = 1;  in rack_init()
14722 		rack->r_limit_scw = 0;  in rack_init()
14724 	rack->rc_labc = V_tcp_abc_l_var;  in rack_init()
14726 		rack->r_use_hpts_min = 1;  in rack_init()
14727 	if (tp->snd_una != 0) {  in rack_init()
14728 		rack->rc_sendvars_notset = 0;  in rack_init()
14736 		 * syn-cache. This means none of the  in rack_init()
14740 		rack->rc_sendvars_notset = 1;  in rack_init()
14743 	rack->r_ctl.rc_rate_sample_method = rack_rate_sample_method;  in rack_init()
14744 	rack->rack_tlp_threshold_use = rack_tlp_threshold_use;  in rack_init()
14745 	rack->r_ctl.rc_prr_sendalot = rack_send_a_lot_in_prr;  in rack_init()
14746 	rack->r_ctl.rc_min_to = rack_min_to;  in rack_init()
14747 	microuptime(&rack->r_ctl.act_rcv_time);  in rack_init()
14748 	rack->r_ctl.rc_last_time_decay = rack->r_ctl.act_rcv_time;  in rack_init()
14749 	rack->r_ctl.rack_per_of_gp_ss = rack_per_of_gp_ss;  in rack_init()
14751 		rack->r_up_only = 1;  in rack_init()
14754 		rack->rc_gp_dyn_mul = 1;  in rack_init()
14756 			rack->r_ctl.rack_per_of_gp_ca = rack_do_dyn_mul;  in rack_init()
14758 		rack->r_ctl.rack_per_of_gp_ca = rack_per_of_gp_ca;  in rack_init()
14759 	rack->r_ctl.rack_per_of_gp_rec = rack_per_of_gp_rec;  in rack_init()
14761 		rack->rc_skip_timely = 1;  in rack_init()
14763 	if (rack->rc_skip_timely) {  in rack_init()
14764 		rack->r_ctl.rack_per_of_gp_rec = 90;  in rack_init()
14765 		rack->r_ctl.rack_per_of_gp_ca = 100;  in rack_init()
14766 		rack->r_ctl.rack_per_of_gp_ss = 250;  in rack_init()
14768 	rack->r_ctl.rack_per_of_gp_probertt = rack_per_of_gp_probertt;  in rack_init()
14769 	rack->r_ctl.rc_tlp_rxt_last_time = tcp_tv_to_mssectick(&rack->r_ctl.act_rcv_time);  in rack_init()
14770 	rack->r_ctl.last_rcv_tstmp_for_rtt = tcp_tv_to_mssectick(&rack->r_ctl.act_rcv_time);  in rack_init()
14772 	setup_time_filter_small(&rack->r_ctl.rc_gp_min_rtt, FILTER_TYPE_MIN,  in rack_init()
14774 	us_cts = tcp_tv_to_usectick(&rack->r_ctl.act_rcv_time);  in rack_init()
14775 	rack->r_ctl.rc_lower_rtt_us_cts = us_cts;  in rack_init()
14776 	rack->r_ctl.rc_time_of_last_probertt = us_cts;  in rack_init()
14777 	rack->r_ctl.rc_went_idle_time = us_cts;  in rack_init()
14778 	rack->r_ctl.rc_time_probertt_starts = 0;  in rack_init()
14780 	rack->r_ctl.gp_rnd_thresh = rack_rnd_cnt_req & 0xff;  in rack_init()
14782 		rack->r_ctl.gate_to_fs = 1;  in rack_init()
14783 	rack->r_ctl.gp_gain_req = rack_gp_gain_req;  in rack_init()
14789 		rack->rc_rack_tmr_std_based = 1;  in rack_init()
14793 		rack->rc_rack_use_dsack = 1;  in rack_init()
14797 		rack->r_ctl.req_measurements = rack_req_measurements;  in rack_init()
14799 		rack->r_ctl.req_measurements = 1;  in rack_init()
14801 		rack->rack_hdw_pace_ena = 1;  in rack_init()
14803 		rack->r_rack_hw_rate_caps = 1;  in rack_init()
14805 		rack->rack_rec_nonrxt_use_cr = 1;  in rack_init()
14814 		tp->t_ccv.flags |= CCF_HYSTART_ALLOWED;  in rack_init()
14816 			tp->t_ccv.flags |= CCF_HYSTART_CAN_SH_CWND;  in rack_init()
14818 			tp->t_ccv.flags |= CCF_HYSTART_CONS_SSTH;  in rack_init()
14826 	tp->t_flags &= ~TF_GPUTINPROG;  in rack_init()
14827 	if ((tp->t_state != TCPS_CLOSED) &&  in rack_init()
14828 	    (tp->t_state != TCPS_TIME_WAIT)) {  in rack_init()
14833 		if (SEQ_GT(tp->snd_max, tp->iss))  in rack_init()
14834 			snt = tp->snd_max - tp->iss;  in rack_init()
14845 			if (tp->snd_cwnd < iwin)  in rack_init()
14846 				tp->snd_cwnd = iwin;  in rack_init()
14867 			tp->snd_ssthresh = 0xffffffff;  in rack_init()
14878 	if ((tp->t_state != TCPS_CLOSED) &&  in rack_init()
14879 	    (tp->t_state != TCPS_TIME_WAIT) &&  in rack_init()
14881 	    (tp->snd_una != tp->snd_max))  {  in rack_init()
14890 	if  (rack->r_mbuf_queue || rack->rc_always_pace || rack->r_use_cmp_ack)  in rack_init()
14891 		tp->t_flags2 |= TF2_SUPPORTS_MBUFQ;  in rack_init()
14893 		tp->t_flags2 &= ~TF2_SUPPORTS_MBUFQ;  in rack_init()
14894 	if (rack->r_use_cmp_ack && TCPS_HAVEESTABLISHED(tp->t_state))  in rack_init()
14895 		tp->t_flags2 |= TF2_MBUF_ACKCMP;  in rack_init()
14901 	 * they are non-zero. They are kept with a 5  in rack_init()
14906 	rack_log_hystart_event(rack, rack->r_ctl.roundends, 20);  in rack_init()
14907 	if ((tptoinpcb(tp)->inp_flags & INP_DROPPED) == 0) {  in rack_init()
14909 		if (tp->t_fb->tfb_chg_query == NULL) {  in rack_init()
14919 			ret = (*tp->t_fb->tfb_chg_query)(tp, &qr);  in rack_init()
14921 				rack->r_ctl.rc_reorder_ts = qr.rack_reorder_ts;  in rack_init()
14922 				rack->r_ctl.num_dsack  = qr.rack_num_dsacks;  in rack_init()
14923 				rack->r_ctl.rc_tlp_rxt_last_time = qr.rack_rxt_last_time;  in rack_init()
14924 				rack->r_ctl.rc_rack_min_rtt = qr.rack_min_rtt;  in rack_init()
14925 				rack->rc_rack_rtt = qr.rack_rtt;  in rack_init()
14926 				rack->r_ctl.rc_rack_tmit_time = qr.rack_tmit_time;  in rack_init()
14927 				rack->r_ctl.rc_sacked = qr.rack_sacked;  in rack_init()
14928 				rack->r_ctl.rc_holes_rxt = qr.rack_holes_rxt;  in rack_init()
14929 				rack->r_ctl.rc_prr_delivered = qr.rack_prr_delivered;  in rack_init()
14930 				rack->r_ctl.rc_prr_recovery_fs = qr.rack_prr_recovery_fs;  in rack_init()
14931 				rack->r_ctl.rc_prr_sndcnt = qr.rack_prr_sndcnt;  in rack_init()
14932 				rack->r_ctl.rc_prr_out = qr.rack_prr_out;  in rack_init()
14934 					rack->rc_tlp_in_progress = 1;  in rack_init()
14935 					rack->r_ctl.rc_tlp_cnt_out = qr.rack_tlp_cnt_out;  in rack_init()
14937 					rack->rc_tlp_in_progress = 0;  in rack_init()
14938 					rack->r_ctl.rc_tlp_cnt_out = 0;  in rack_init()
14941 					rack->rc_srtt_measure_made = 1;  in rack_init()
14943 					rack->r_ctl.rc_went_idle_time = qr.rack_time_went_idle;  in rack_init()
14945 					if (rack->r_ctl.rc_scw) {  in rack_init()
14946 						tcp_shared_cwnd_idle(rack->r_ctl.rc_scw, rack->r_ctl.rc_scw_index);  in rack_init()
14947 						rack->rack_scwnd_is_idle = 1;  in rack_init()
14950 					rack->r_ctl.persist_lost_ends = 0;  in rack_init()
14951 					rack->probe_not_answered = 0;  in rack_init()
14952 					rack->forced_ack = 0;  in rack_init()
14953 					tp->t_rxtshift = 0;  in rack_init()
14954 					rack->rc_in_persist = 1;  in rack_init()
14955 					RACK_TCPT_RANGESET(tp->t_rxtcur, RACK_REXMTVAL(tp),  in rack_init()
14956 							   rack_rto_min, rack_rto_max, rack->r_ctl.timer_slop);  in rack_init()
14959 					rack->r_wanted_output = 1;  in rack_init()
14968 			ret = (*tp->t_fb->tfb_chg_query)(tp, &qr);  in rack_init()
14971 				 * non-zero return means we have a timer('s)  in rack_init()
14977 				rack->r_ctl.rc_hpts_flags = qr.timer_hpts_flags;  in rack_init()
14979 					rack->r_ctl.rc_last_output_to = qr.timer_pacing_to;  in rack_init()
14981 						tov = qr.timer_pacing_to - us_cts;  in rack_init()
14986 					rack->r_ctl.rc_timer_exp = qr.timer_timer_exp;  in rack_init()
14989 							tov = qr.timer_timer_exp - us_cts;  in rack_init()
14995 						  rack->r_ctl.rc_hpts_flags,  in rack_init()
14996 						  rack->r_ctl.rc_last_output_to,  in rack_init()
14997 						  rack->r_ctl.rc_timer_exp);  in rack_init()
15003 					rack_log_hpts_diag(rack, us_cts, &diag, &rack->r_ctl.act_rcv_time);  in rack_init()
15007 		rack_log_rtt_shrinks(rack,  us_cts,  tp->t_rxtcur,  in rack_init()
15016 	if ((tp->t_state == TCPS_CLOSED) ||  in rack_handoff_ok()
15017 	    (tp->t_state == TCPS_LISTEN)) {  in rack_handoff_ok()
15021 	if ((tp->t_state == TCPS_SYN_SENT) ||  in rack_handoff_ok()
15022 	    (tp->t_state == TCPS_SYN_RECEIVED)) {  in rack_handoff_ok()
15029 	if ((tp->t_flags & TF_SENTFIN) && ((tp->snd_max - tp->snd_una) > 1)) {  in rack_handoff_ok()
15042 	if ((tp->t_flags & TF_SACK_PERMIT) || rack_sack_not_required){  in rack_handoff_ok()
15056 	if (tp->t_fb_ptr) {  in rack_fini()
15062 		tp->t_flags &= ~TF_FORCEDATA;  in rack_fini()
15063 		rack = (struct tcp_rack *)tp->t_fb_ptr;  in rack_fini()
15072 		if (rack->r_ctl.rc_scw) {  in rack_fini()
15075 			if (rack->r_limit_scw)  in rack_fini()
15076 				limit = max(1, rack->r_ctl.rc_lowest_us_rtt);  in rack_fini()
15079 			tcp_shared_cwnd_free_full(tp, rack->r_ctl.rc_scw,  in rack_fini()
15080 						  rack->r_ctl.rc_scw_index,  in rack_fini()
15082 			rack->r_ctl.rc_scw = NULL;  in rack_fini()
15085 		if (rack->r_ctl.fsb.tcp_ip_hdr) {  in rack_fini()
15086 			free(rack->r_ctl.fsb.tcp_ip_hdr, M_TCPFSB);  in rack_fini()
15087 			rack->r_ctl.fsb.tcp_ip_hdr = NULL;  in rack_fini()
15088 			rack->r_ctl.fsb.th = NULL;  in rack_fini()
15090 		if (rack->rc_always_pace == 1) {  in rack_fini()
15094 		while (!TAILQ_EMPTY(&rack->r_ctl.opt_list)) {  in rack_fini()
15097 			dol = TAILQ_FIRST(&rack->r_ctl.opt_list);  in rack_fini()
15098 			TAILQ_REMOVE(&rack->r_ctl.opt_list, dol, next);  in rack_fini()
15102 		if (rack->r_ctl.crte != NULL) {  in rack_fini()
15103 			tcp_rel_pacing_rate(rack->r_ctl.crte, tp);  in rack_fini()
15104 			rack->rack_hdrw_pacing = 0;  in rack_fini()
15105 			rack->r_ctl.crte = NULL;  in rack_fini()
15112 		 * get each one and free it like a cum-ack would and  in rack_fini()
15115 		rsm = tqhash_min(rack->r_ctl.tqh);  in rack_fini()
15117 			tqhash_remove(rack->r_ctl.tqh, rsm, REMOVE_TYPE_CUMACK);  in rack_fini()
15118 			rack->r_ctl.rc_num_maps_alloced--;  in rack_fini()
15120 			rsm = tqhash_min(rack->r_ctl.tqh);  in rack_fini()
15122 		rsm = TAILQ_FIRST(&rack->r_ctl.rc_free);  in rack_fini()
15124 			TAILQ_REMOVE(&rack->r_ctl.rc_free, rsm, r_tnext);  in rack_fini()
15125 			rack->r_ctl.rc_num_maps_alloced--;  in rack_fini()
15126 			rack->rc_free_cnt--;  in rack_fini()
15129 			rsm = TAILQ_FIRST(&rack->r_ctl.rc_free);  in rack_fini()
15131 		if (rack->r_ctl.pcm_s != NULL) {  in rack_fini()
15132 			free(rack->r_ctl.pcm_s, M_TCPPCM);  in rack_fini()
15133 			rack->r_ctl.pcm_s = NULL;  in rack_fini()
15134 			rack->r_ctl.pcm_i.cnt_alloc = 0;  in rack_fini()
15135 			rack->r_ctl.pcm_i.cnt = 0;  in rack_fini()
15137 		if ((rack->r_ctl.rc_num_maps_alloced > 0) &&  in rack_fini()
15144 			log.u_bbr.flex1 = rack->r_ctl.rc_num_maps_alloced;  in rack_fini()
15145 			log.u_bbr.flex2 = rack->rc_free_cnt;  in rack_fini()
15147 			log.u_bbr.inflight = ctf_flight_size(rack->rc_tp, rack->r_ctl.rc_sacked);  in rack_fini()
15148 			rsm = tqhash_min(rack->r_ctl.tqh);  in rack_fini()
15150 			rsm = TAILQ_FIRST(&rack->r_ctl.rc_free);  in rack_fini()
15157 		KASSERT((rack->r_ctl.rc_num_maps_alloced == 0),  in rack_fini()
15160 			 rack->r_ctl.rc_num_maps_alloced));  in rack_fini()
15161 		rack->rc_free_cnt = 0;  in rack_fini()
15162 		free(rack->r_ctl.tqh, M_TCPFSB);  in rack_fini()
15163 		rack->r_ctl.tqh = NULL;  in rack_fini()
15164 		uma_zfree(rack_pcb_zone, tp->t_fb_ptr);  in rack_fini()
15165 		tp->t_fb_ptr = NULL;  in rack_fini()
15168 	tp->snd_nxt = tp->snd_max;  in rack_fini()
15174 	if ((rack->r_state == TCPS_CLOSED) && (tp->t_state != TCPS_CLOSED)) {  in rack_set_state()
15175 		rack->r_is_v6 = (tptoinpcb(tp)->inp_vflag & INP_IPV6) != 0;  in rack_set_state()
15177 	switch (tp->t_state) {  in rack_set_state()
15179 		rack->r_state = TCPS_SYN_SENT;  in rack_set_state()
15180 		rack->r_substate = rack_do_syn_sent;  in rack_set_state()
15183 		rack->r_state = TCPS_SYN_RECEIVED;  in rack_set_state()
15184 		rack->r_substate = rack_do_syn_recv;  in rack_set_state()
15188 		rack->r_state = TCPS_ESTABLISHED;  in rack_set_state()
15189 		rack->r_substate = rack_do_established;  in rack_set_state()
15192 		rack->r_state = TCPS_CLOSE_WAIT;  in rack_set_state()
15193 		rack->r_substate = rack_do_close_wait;  in rack_set_state()
15197 		rack->r_state = TCPS_FIN_WAIT_1;  in rack_set_state()
15198 		rack->r_substate = rack_do_fin_wait_1;  in rack_set_state()
15202 		rack->r_state = TCPS_CLOSING;  in rack_set_state()
15203 		rack->r_substate = rack_do_closing;  in rack_set_state()
15207 		rack->r_state = TCPS_LAST_ACK;  in rack_set_state()
15208 		rack->r_substate = rack_do_lastack;  in rack_set_state()
15211 		rack->r_state = TCPS_FIN_WAIT_2;  in rack_set_state()
15212 		rack->r_substate = rack_do_fin_wait_2;  in rack_set_state()
15220 	if (rack->r_use_cmp_ack && TCPS_HAVEESTABLISHED(tp->t_state))  in rack_set_state()
15221 		rack->rc_tp->t_flags2 |= TF2_MBUF_ACKCMP;  in rack_set_state()
15237 	tmr_up = rack->r_ctl.rc_hpts_flags & PACE_TMR_MASK;  in rack_timer_audit()
15238 	if (tcp_in_hpts(rack->rc_tp) == 0) {  in rack_timer_audit()
15244 		rack_timer_cancel(tp, rack, rack->r_ctl.rc_rcvtime, __LINE__);  in rack_timer_audit()
15248 	if (rack->rc_in_persist && (tmr_up == PACE_TMR_PERSIT))  in rack_timer_audit()
15250 	rsm = TAILQ_FIRST(&rack->r_ctl.rc_tmap);  in rack_timer_audit()
15251 	if (((rsm == NULL) || (tp->t_state < TCPS_ESTABLISHED)) &&  in rack_timer_audit()
15258 		if (tp->t_flags & TF_DELACK) {  in rack_timer_audit()
15262 		} else if (sbavail(&tptosocket(tp)->so_snd) && (tmr_up == PACE_TMR_RXT)) {  in rack_timer_audit()
15269 			     rack->rc_inp->inp_socket->so_options & SO_KEEPALIVE) &&  in rack_timer_audit()
15270 			    (tp->t_state <= TCPS_CLOSING)) &&  in rack_timer_audit()
15272 			   (tp->snd_max == tp->snd_una)) {  in rack_timer_audit()
15277 	if (SEQ_GT(tp->snd_max, tp->snd_una) &&  in rack_timer_audit()
15301 	if (tcp_in_hpts(rack->rc_tp)) {  in rack_timer_audit()
15302 		if (rack->r_ctl.rc_hpts_flags & PACE_PKT_OUTPUT) {  in rack_timer_audit()
15306 			if (TSTMP_GT(rack->r_ctl.rc_last_output_to, us_cts)) {  in rack_timer_audit()
15307 				rack->r_early = 1;  in rack_timer_audit()
15308 				rack->r_ctl.rc_agg_early += (rack->r_ctl.rc_last_output_to - us_cts);  in rack_timer_audit()
15310 			rack->r_ctl.rc_hpts_flags &= ~PACE_PKT_OUTPUT;  in rack_timer_audit()
15312 		tcp_hpts_remove(rack->rc_tp);  in rack_timer_audit()
15314 	rack_timer_cancel(tp, rack, rack->r_ctl.rc_rcvtime, __LINE__);  in rack_timer_audit()
15322 	if ((SEQ_LT(tp->snd_wl1, seq) ||  in rack_do_win_updates()
15323 	    (tp->snd_wl1 == seq && (SEQ_LT(tp->snd_wl2, ack) ||  in rack_do_win_updates()
15324 	    (tp->snd_wl2 == ack && tiwin > tp->snd_wnd))))) {  in rack_do_win_updates()
15326 		if ((tp->snd_wl2 == ack) && (tiwin > tp->snd_wnd))  in rack_do_win_updates()
15328 		tp->snd_wnd = tiwin;  in rack_do_win_updates()
15330 		tp->snd_wl1 = seq;  in rack_do_win_updates()
15331 		tp->snd_wl2 = ack;  in rack_do_win_updates()
15332 		if (tp->snd_wnd > tp->max_sndwnd)  in rack_do_win_updates()
15333 			tp->max_sndwnd = tp->snd_wnd;  in rack_do_win_updates()
15334 	    rack->r_wanted_output = 1;  in rack_do_win_updates()
15335 	} else if ((tp->snd_wl2 == ack) && (tiwin < tp->snd_wnd)) {  in rack_do_win_updates()
15336 		tp->snd_wnd = tiwin;  in rack_do_win_updates()
15338 		tp->snd_wl1 = seq;  in rack_do_win_updates()
15339 		tp->snd_wl2 = ack;  in rack_do_win_updates()
15344 	if (tp->snd_wnd > tp->max_sndwnd)  in rack_do_win_updates()
15345 		tp->max_sndwnd = tp->snd_wnd;  in rack_do_win_updates()
15347 	if ((rack->rc_in_persist != 0) &&  in rack_do_win_updates()
15348 	    (tp->snd_wnd >= min((rack->r_ctl.rc_high_rwnd/2),  in rack_do_win_updates()
15349 				rack->r_ctl.rc_pace_min_segs))) {  in rack_do_win_updates()
15353 	if ((rack->rc_in_persist == 0) &&  in rack_do_win_updates()
15354 	    (tp->snd_wnd < min((rack->r_ctl.rc_high_rwnd/2), rack->r_ctl.rc_pace_min_segs)) &&  in rack_do_win_updates()
15355 	    TCPS_HAVEESTABLISHED(tp->t_state) &&  in rack_do_win_updates()
15356 	    ((tp->snd_max == tp->snd_una) || rack->rc_has_collapsed) &&  in rack_do_win_updates()
15357 	    sbavail(&tptosocket(tp)->so_snd) &&  in rack_do_win_updates()
15358 	    (sbavail(&tptosocket(tp)->so_snd) > tp->snd_wnd)) {  in rack_do_win_updates()
15365 		rack_enter_persist(tp, rack, rack->r_ctl.rc_rcvtime, ack);  in rack_do_win_updates()
15373 	if (tcp_bblogging_on(rack->rc_tp)) {  in rack_log_input_packet()
15386 		if (SEQ_GT(ae->ack, tp->snd_una)) {  in rack_log_input_packet()
15387 			tcp_req = tcp_req_find_req_for_seq(tp, (ae->ack-1));  in rack_log_input_packet()
15389 			tcp_req = tcp_req_find_req_for_seq(tp, ae->ack);  in rack_log_input_packet()
15393 		log.u_bbr.inhpts = tcp_in_hpts(rack->rc_tp);  in rack_log_input_packet()
15394 		if (rack->rack_no_prr == 0)  in rack_log_input_packet()
15395 			log.u_bbr.flex1 = rack->r_ctl.rc_prr_sndcnt;  in rack_log_input_packet()
15398 		log.u_bbr.use_lt_bw = rack->r_ent_rec_ns;  in rack_log_input_packet()
15400 		log.u_bbr.use_lt_bw |= rack->r_might_revert;  in rack_log_input_packet()
15401 		log.u_bbr.flex2 = rack->r_ctl.rc_num_maps_alloced;  in rack_log_input_packet()
15402 		log.u_bbr.bbr_state = rack->rc_free_cnt;  in rack_log_input_packet()
15403 		log.u_bbr.inflight = ctf_flight_size(tp, rack->r_ctl.rc_sacked);  in rack_log_input_packet()
15404 		log.u_bbr.pkts_out = tp->t_maxseg;  in rack_log_input_packet()
15405 		log.u_bbr.flex4 = rack->r_ctl.rc_hpts_flags;  in rack_log_input_packet()
15407 		log.u_bbr.lost = ae->flags;  in rack_log_input_packet()
15410 		if (ae->flags & TSTMP_HDWR) {  in rack_log_input_packet()
15413 			ts.tv_sec = ae->timestamp / 1000000000;  in rack_log_input_packet()
15414 			ts.tv_nsec = ae->timestamp % 1000000000;  in rack_log_input_packet()
15418 		} else if (ae->flags & TSTMP_LRO) {  in rack_log_input_packet()
15421 			ts.tv_sec = ae->timestamp / 1000000000;  in rack_log_input_packet()
15422 			ts.tv_nsec = ae->timestamp % 1000000000;  in rack_log_input_packet()
15429 		log.u_bbr.delRate = ae->timestamp;  in rack_log_input_packet()
15431 		log.u_bbr.applimited = tp->t_tcpreq_closed;  in rack_log_input_packet()
15433 		log.u_bbr.applimited |= tp->t_tcpreq_open;  in rack_log_input_packet()
15435 		log.u_bbr.applimited |= tp->t_tcpreq_req;  in rack_log_input_packet()
15439 			log.u_bbr.pkt_epoch = (tcp_req->localtime / HPTS_USEC_IN_SEC);  in rack_log_input_packet()
15441 			log.u_bbr.delivered = (tcp_req->localtime % HPTS_USEC_IN_SEC);  in rack_log_input_packet()
15442 			log.u_bbr.rttProp = tcp_req->timestamp;  in rack_log_input_packet()
15443 			log.u_bbr.cur_del_rate = tcp_req->start;  in rack_log_input_packet()
15444 			if (tcp_req->flags & TCP_TRK_TRACK_FLG_OPEN) {  in rack_log_input_packet()
15448 				log.u_bbr.bw_inuse = tcp_req->end;  in rack_log_input_packet()
15450 			log.u_bbr.flex6 = tcp_req->start_seq;  in rack_log_input_packet()
15451 			if (tcp_req->flags & TCP_TRK_TRACK_FLG_COMP) {  in rack_log_input_packet()
15453 				log.u_bbr.epoch = tcp_req->end_seq;  in rack_log_input_packet()
15459 		th->th_seq = ae->seq;  in rack_log_input_packet()
15460 		th->th_ack = ae->ack;  in rack_log_input_packet()
15461 		th->th_win = ae->win;  in rack_log_input_packet()
15463 		th->th_sport = inp->inp_fport;  in rack_log_input_packet()
15464 		th->th_dport = inp->inp_lport;  in rack_log_input_packet()
15465 		tcp_set_flags(th, ae->flags);  in rack_log_input_packet()
15467 		if (ae->flags & HAS_TSTMP) {  in rack_log_input_packet()
15471 			th->th_off = ((sizeof(struct tcphdr) + TCPOLEN_TSTAMP_APPA) >> 2);  in rack_log_input_packet()
15481 			val = htonl(ae->ts_value);  in rack_log_input_packet()
15484 			val = htonl(ae->ts_echo);  in rack_log_input_packet()
15488 			th->th_off = (sizeof(struct tcphdr) >> 2);  in rack_log_input_packet()
15497 		 * snd_una was advanced and then un-advancing it so that the  in rack_log_input_packet()
15500 		if (tp->snd_una != high_seq) {  in rack_log_input_packet()
15501 			orig_snd_una = tp->snd_una;  in rack_log_input_packet()
15502 			tp->snd_una = high_seq;  in rack_log_input_packet()
15507 			       &tptosocket(tp)->so_rcv,  in rack_log_input_packet()
15508 			       &tptosocket(tp)->so_snd, TCP_LOG_IN, 0,  in rack_log_input_packet()
15511 			tp->snd_una = orig_snd_una;  in rack_log_input_packet()
15522 	 * A persist or keep-alive was forced out, update our  in rack_handle_probe_response()
15524 	 * When a subsequent keep-alive or persist times out  in rack_handle_probe_response()
15530 	 * will clear the probe_not_answered flag i.e. cum-ack  in rack_handle_probe_response()
15534 	rack->forced_ack = 0;  in rack_handle_probe_response()
15535 	rack->rc_tp->t_rxtshift = 0;  in rack_handle_probe_response()
15536 	if ((rack->rc_in_persist &&  in rack_handle_probe_response()
15537 	     (tiwin == rack->rc_tp->snd_wnd)) ||  in rack_handle_probe_response()
15538 	    (rack->rc_in_persist == 0)) {  in rack_handle_probe_response()
15553 		if (rack->rc_in_persist)  in rack_handle_probe_response()
15555 		us_rtt = us_cts - rack->r_ctl.forced_ack_ts;  in rack_handle_probe_response()
15558 		if (rack->probe_not_answered == 0) {  in rack_handle_probe_response()
15580 	rack->r_ctl.roundends = tp->snd_max;  in rack_new_round_starts()
15581 	rack->rc_new_rnd_needed = 0;  in rack_new_round_starts()
15582 	rack_log_hystart_event(rack, tp->snd_max, 4);  in rack_new_round_starts()
15590 	if (tcp_bblogging_on(rack->rc_tp)) {  in rack_log_pcm()
15597 		log.u_bbr.inflight = ctf_flight_size(rack->rc_tp, rack->r_ctl.rc_sacked);  in rack_log_pcm()
15603 		log.u_bbr.flex5 = rack->r_ctl.pcm_idle_rounds;  in rack_log_pcm()
15604 		log.u_bbr.bbr_substate = rack->pcm_needed;  in rack_log_pcm()
15606 		log.u_bbr.bbr_substate |= rack->pcm_in_progress;  in rack_log_pcm()
15608 		log.u_bbr.bbr_substate |= rack->pcm_enabled; /* bits are NIE for Needed, Inprogress, Enabled */  in rack_log_pcm()
15609 		(void)tcp_log_event(rack->rc_tp, NULL, NULL, NULL, TCP_PCM_MEASURE, ERRNO_UNK,  in rack_log_pcm()
15624 	rack->r_ctl.current_round++;  in rack_new_round_setup()
15626 	rack->rc_new_rnd_needed = 1;  in rack_new_round_setup()
15627 	if ((rack->pcm_enabled == 1) &&  in rack_new_round_setup()
15628 	    (rack->pcm_needed == 0) &&  in rack_new_round_setup()
15629 	    (rack->pcm_in_progress == 0)) {  in rack_new_round_setup()
15637 		rnds = rack->r_ctl.current_round - rack->r_ctl.last_pcm_round;  in rack_new_round_setup()
15638 		if ((rnds + rack->r_ctl.pcm_idle_rounds) >= rack_pcm_every_n_rounds) {  in rack_new_round_setup()
15639 			rack->pcm_needed = 1;  in rack_new_round_setup()
15640 …rack_log_pcm(rack, 3, rack->r_ctl.last_pcm_round, rack_pcm_every_n_rounds, rack->r_ctl.current_rou…  in rack_new_round_setup()
15642 …rack_log_pcm(rack, 3, rack->r_ctl.last_pcm_round, rack_pcm_every_n_rounds, rack->r_ctl.current_rou…  in rack_new_round_setup()
15645 	if (tp->t_ccv.flags & CCF_HYSTART_ALLOWED) {  in rack_new_round_setup()
15647 		if (CC_ALGO(tp)->newround != NULL) {  in rack_new_round_setup()
15648 			CC_ALGO(tp)->newround(&tp->t_ccv, rack->r_ctl.current_round);  in rack_new_round_setup()
15653 	 * that we are not just pushing on slow-start and just  in rack_new_round_setup()
15655 	 * boost in b/w during the inital slow-start.  in rack_new_round_setup()
15657 	if (rack->dgp_on &&  in rack_new_round_setup()
15658 	    (rack->rc_initial_ss_comp == 0) &&  in rack_new_round_setup()
15659 	    (tp->snd_cwnd < tp->snd_ssthresh) &&  in rack_new_round_setup()
15660 	    (rack->r_ctl.num_measurements >= RACK_REQ_AVG) &&  in rack_new_round_setup()
15661 	    (rack->r_ctl.gp_rnd_thresh > 0) &&  in rack_new_round_setup()
15662 	    ((rack->r_ctl.current_round - rack->r_ctl.last_rnd_of_gp_rise) >= rack->r_ctl.gp_rnd_thresh)) {  in rack_new_round_setup()
15672 		rack->rc_initial_ss_comp = 1;  in rack_new_round_setup()
15674 		if (tcp_bblogging_on(rack->rc_tp)) {  in rack_new_round_setup()
15680 			log.u_bbr.flex1 = rack->r_ctl.current_round;  in rack_new_round_setup()
15681 			log.u_bbr.flex2 = rack->r_ctl.last_rnd_of_gp_rise;  in rack_new_round_setup()
15682 			log.u_bbr.flex3 = rack->r_ctl.gp_rnd_thresh;  in rack_new_round_setup()
15683 			log.u_bbr.flex4 = rack->r_ctl.gate_to_fs;  in rack_new_round_setup()
15684 			log.u_bbr.flex5 = rack->r_ctl.ss_hi_fs;  in rack_new_round_setup()
15689 		if ((rack->r_ctl.gate_to_fs == 1) &&  in rack_new_round_setup()
15690 		     (tp->snd_cwnd > rack->r_ctl.ss_hi_fs)) {  in rack_new_round_setup()
15691 			tp->snd_cwnd = rack->r_ctl.ss_hi_fs;  in rack_new_round_setup()
15693 		tp->snd_ssthresh = tp->snd_cwnd - 1;  in rack_new_round_setup()
15695 		rack->r_fast_output = 0;  in rack_new_round_setup()
15706 	 * A) It moves the cum-ack forward  in rack_do_compressed_ack_processing()
15707 	 * B) It is behind the cum-ack.  in rack_do_compressed_ack_processing()
15708 	 * C) It is a window-update ack.  in rack_do_compressed_ack_processing()
15709 	 * D) It is a dup-ack.  in rack_do_compressed_ack_processing()
15711 	 * Note that we can have between 1 -> TCP_COMP_ACK_ENTRIES  in rack_do_compressed_ack_processing()
15736 	rack = (struct tcp_rack *)tp->t_fb_ptr;  in rack_do_compressed_ack_processing()
15737 	if (rack->gp_ready &&  in rack_do_compressed_ack_processing()
15738 	    (rack->r_ctl.rc_hpts_flags & PACE_PKT_OUTPUT))  in rack_do_compressed_ack_processing()
15741 	if (rack->r_state != tp->t_state)  in rack_do_compressed_ack_processing()
15743 	if ((tp->t_state >= TCPS_FIN_WAIT_1) &&  in rack_do_compressed_ack_processing()
15744 	    (tp->t_flags & TF_GPUTINPROG)) {  in rack_do_compressed_ack_processing()
15753 		bytes = tp->gput_ack - tp->gput_seq;  in rack_do_compressed_ack_processing()
15754 		if (SEQ_GT(tp->gput_seq, tp->snd_una))  in rack_do_compressed_ack_processing()
15755 			bytes += tp->gput_seq - tp->snd_una;  in rack_do_compressed_ack_processing()
15756 		if (bytes > sbavail(&tptosocket(tp)->so_snd)) {  in rack_do_compressed_ack_processing()
15762 			rack_log_pacing_delay_calc(rack, (tp->gput_ack - tp->gput_seq) /*flex2*/,  in rack_do_compressed_ack_processing()
15763 						   rack->r_ctl.rc_gp_srtt /*flex1*/,  in rack_do_compressed_ack_processing()
15764 						   tp->gput_seq,  in rack_do_compressed_ack_processing()
15766 			tp->t_flags &= ~TF_GPUTINPROG;  in rack_do_compressed_ack_processing()
15770 	to->to_flags = 0;  in rack_do_compressed_ack_processing()
15771 	KASSERT((m->m_len >= sizeof(struct tcp_ackent)),  in rack_do_compressed_ack_processing()
15772 		("tp:%p m_cmpack:%p with invalid len:%u", tp, m, m->m_len));  in rack_do_compressed_ack_processing()
15773 	cnt = m->m_len / sizeof(struct tcp_ackent);  in rack_do_compressed_ack_processing()
15775 	high_seq = tp->snd_una;  in rack_do_compressed_ack_processing()
15776 	the_win = tp->snd_wnd;  in rack_do_compressed_ack_processing()
15777 	win_seq = tp->snd_wl1;  in rack_do_compressed_ack_processing()
15778 	win_upd_ack = tp->snd_wl2;  in rack_do_compressed_ack_processing()
15781 	rack->r_ctl.rc_rcvtime = cts;  in rack_do_compressed_ack_processing()
15783 	if ((rack->rc_gp_dyn_mul) &&  in rack_do_compressed_ack_processing()
15784 	    (rack->use_fixed_rate == 0) &&  in rack_do_compressed_ack_processing()
15785 	    (rack->rc_always_pace)) {  in rack_do_compressed_ack_processing()
15795 		if (ae->flags & TH_FIN)  in rack_do_compressed_ack_processing()
15804 		tiwin = ae->win << tp->snd_scale;  in rack_do_compressed_ack_processing()
15805 		if (tiwin > rack->r_ctl.rc_high_rwnd)  in rack_do_compressed_ack_processing()
15806 			rack->r_ctl.rc_high_rwnd = tiwin;  in rack_do_compressed_ack_processing()
15808 		if (SEQ_LT(ae->ack, high_seq)) {  in rack_do_compressed_ack_processing()
15810 			ae->ack_val_set = ACK_BEHIND;  in rack_do_compressed_ack_processing()
15811 		} else if (SEQ_GT(ae->ack, high_seq)) {  in rack_do_compressed_ack_processing()
15813 			ae->ack_val_set = ACK_CUMACK;  in rack_do_compressed_ack_processing()
15814 		} else if ((tiwin == the_win) && (rack->rc_in_persist == 0)){  in rack_do_compressed_ack_processing()
15816 			ae->ack_val_set = ACK_DUPACK;  in rack_do_compressed_ack_processing()
15819 			ae->ack_val_set = ACK_RWND;  in rack_do_compressed_ack_processing()
15822 		rack_log_input_packet(tp, rack, ae, ae->ack_val_set, high_seq);  in rack_do_compressed_ack_processing()
15824 		if (ae->flags & HAS_TSTMP) {  in rack_do_compressed_ack_processing()
15826 			to->to_flags = TOF_TS;  in rack_do_compressed_ack_processing()
15827 			ae->ts_echo -= tp->ts_offset;  in rack_do_compressed_ack_processing()
15828 			to->to_tsecr = ae->ts_echo;  in rack_do_compressed_ack_processing()
15829 			to->to_tsval = ae->ts_value;  in rack_do_compressed_ack_processing()
15835 			if (TSTMP_GT(ae->ts_echo, ms_cts))  in rack_do_compressed_ack_processing()
15836 				to->to_tsecr = 0;  in rack_do_compressed_ack_processing()
15837 			if (tp->ts_recent &&  in rack_do_compressed_ack_processing()
15838 			    TSTMP_LT(ae->ts_value, tp->ts_recent)) {  in rack_do_compressed_ack_processing()
15839 				if (ctf_ts_check_ac(tp, (ae->flags & 0xff))) {  in rack_do_compressed_ack_processing()
15843 						if (tp->t_flags2 & TF2_TCP_ACCOUNTING) {  in rack_do_compressed_ack_processing()
15844 							tp->tcp_proc_time[ae->ack_val_set] += (rdstc - ts_val);  in rack_do_compressed_ack_processing()
15851 			if (SEQ_LEQ(ae->seq, tp->last_ack_sent) &&  in rack_do_compressed_ack_processing()
15852 			    SEQ_LEQ(tp->last_ack_sent, ae->seq)) {  in rack_do_compressed_ack_processing()
15853 				tp->ts_recent_age = tcp_ts_getticks();  in rack_do_compressed_ack_processing()
15854 				tp->ts_recent = ae->ts_value;  in rack_do_compressed_ack_processing()
15858 			to->to_flags = 0;  in rack_do_compressed_ack_processing()
15861 		if  (tp->t_idle_reduce &&  in rack_do_compressed_ack_processing()
15862 		     (tp->snd_max == tp->snd_una) &&  in rack_do_compressed_ack_processing()
15863 		     (TICKS_2_USEC(ticks - tp->t_rcvtime) >= tp->t_rxtcur)) {  in rack_do_compressed_ack_processing()
15867 		tp->t_rcvtime = ticks;  in rack_do_compressed_ack_processing()
15869 		if (tcp_ecn_input_segment(tp, ae->flags, 0,  in rack_do_compressed_ack_processing()
15870 			tcp_packets_this_ack(tp, ae->ack),  in rack_do_compressed_ack_processing()
15871 			ae->codepoint))  in rack_do_compressed_ack_processing()
15872 			rack_cong_signal(tp, CC_ECN, ae->ack, __LINE__);  in rack_do_compressed_ack_processing()
15875 		if (tp->t_flags2 & TF2_TCP_ACCOUNTING) {  in rack_do_compressed_ack_processing()
15876 			tp->tcp_cnt_counters[ae->ack_val_set]++;  in rack_do_compressed_ack_processing()
15883 		 * The non-compressed path through the code has this  in rack_do_compressed_ack_processing()
15890 		if (ae->ack_val_set == ACK_BEHIND) {  in rack_do_compressed_ack_processing()
15893 			 * or it could be a keep-alive or persists  in rack_do_compressed_ack_processing()
15895 			if (SEQ_LT(ae->ack, tp->snd_una) && (sbspace(&so->so_rcv) > segsiz)) {  in rack_do_compressed_ack_processing()
15896 				rack->r_ctl.rc_reorder_ts = tcp_tv_to_usectick(&rack->r_ctl.act_rcv_time);  in rack_do_compressed_ack_processing()
15897 				if (rack->r_ctl.rc_reorder_ts == 0)  in rack_do_compressed_ack_processing()
15898 					rack->r_ctl.rc_reorder_ts = 1;  in rack_do_compressed_ack_processing()
15900 		} else if (ae->ack_val_set == ACK_DUPACK) {  in rack_do_compressed_ack_processing()
15902 			rack_strike_dupack(rack, ae->ack);  in rack_do_compressed_ack_processing()
15903 		} else if (ae->ack_val_set == ACK_RWND) {  in rack_do_compressed_ack_processing()
15905 			if ((ae->flags & TSTMP_LRO) || (ae->flags & TSTMP_HDWR)) {  in rack_do_compressed_ack_processing()
15906 				ts.tv_sec = ae->timestamp / 1000000000;  in rack_do_compressed_ack_processing()
15907 				ts.tv_nsec = ae->timestamp % 1000000000;  in rack_do_compressed_ack_processing()
15908 				rack->r_ctl.act_rcv_time.tv_sec = ts.tv_sec;  in rack_do_compressed_ack_processing()
15909 				rack->r_ctl.act_rcv_time.tv_usec = ts.tv_nsec/1000;  in rack_do_compressed_ack_processing()
15911 				rack->r_ctl.act_rcv_time = *tv;  in rack_do_compressed_ack_processing()
15913 			if (rack->forced_ack) {  in rack_do_compressed_ack_processing()
15915 							   tcp_tv_to_usectick(&rack->r_ctl.act_rcv_time));  in rack_do_compressed_ack_processing()
15920 			win_upd_ack = ae->ack;  in rack_do_compressed_ack_processing()
15921 			win_seq = ae->seq;  in rack_do_compressed_ack_processing()
15926 			if (SEQ_GT(ae->ack, tp->snd_max)) {  in rack_do_compressed_ack_processing()
15931 				if ((tp->t_flags & TF_ACKNOW) == 0) {  in rack_do_compressed_ack_processing()
15933 					if (tp->t_flags && TF_ACKNOW)  in rack_do_compressed_ack_processing()
15934 						rack->r_wanted_output = 1;  in rack_do_compressed_ack_processing()
15939 				if (tiwin != tp->snd_wnd) {  in rack_do_compressed_ack_processing()
15940 					win_upd_ack = ae->ack;  in rack_do_compressed_ack_processing()
15941 					win_seq = ae->seq;  in rack_do_compressed_ack_processing()
15947 				if (tp->t_flags2 & TF2_TCP_ACCOUNTING) {  in rack_do_compressed_ack_processing()
15948 					tp->tcp_cnt_counters[CNT_OF_ACKS_IN] += (((ae->ack - high_seq) + segsiz - 1) / segsiz);  in rack_do_compressed_ack_processing()
15951 				high_seq = ae->ack;  in rack_do_compressed_ack_processing()
15953 				if ((ae->flags & TSTMP_LRO) || (ae->flags & TSTMP_HDWR)) {  in rack_do_compressed_ack_processing()
15954 					ts.tv_sec = ae->timestamp / 1000000000;  in rack_do_compressed_ack_processing()
15955 					ts.tv_nsec = ae->timestamp % 1000000000;  in rack_do_compressed_ack_processing()
15956 					rack->r_ctl.act_rcv_time.tv_sec = ts.tv_sec;  in rack_do_compressed_ack_processing()
15957 					rack->r_ctl.act_rcv_time.tv_usec = ts.tv_nsec/1000;  in rack_do_compressed_ack_processing()
15959 					rack->r_ctl.act_rcv_time = *tv;  in rack_do_compressed_ack_processing()
15961 				rack_process_to_cumack(tp, rack, ae->ack, cts, to,  in rack_do_compressed_ack_processing()
15962 						       tcp_tv_to_lusectick(&rack->r_ctl.act_rcv_time));  in rack_do_compressed_ack_processing()
15966 				if (rack->rc_dsack_round_seen) {  in rack_do_compressed_ack_processing()
15968 					if (SEQ_GEQ(ae->ack, rack->r_ctl.dsack_round_end)) {  in rack_do_compressed_ack_processing()
15970 						rack->rc_dsack_round_seen = 0;  in rack_do_compressed_ack_processing()
15981 			if (tp->t_flags2 & TF2_TCP_ACCOUNTING) {  in rack_do_compressed_ack_processing()
15982 				tp->tcp_proc_time[ae->ack_val_set] += (rdstc - ts_val);  in rack_do_compressed_ack_processing()
15983 				if (ae->ack_val_set == ACK_CUMACK)  in rack_do_compressed_ack_processing()
15984 					tp->tcp_proc_time[CYC_HANDLE_MAP] += (rdstc - ts_val);  in rack_do_compressed_ack_processing()
15993 	if (SEQ_GT(tp->snd_max, high_seq) && (tp->snd_wnd < (tp->snd_max - high_seq))) {  in rack_do_compressed_ack_processing()
15995 		rack_collapsed_window(rack, (tp->snd_max - high_seq), high_seq, __LINE__);  in rack_do_compressed_ack_processing()
15996 	} else if (rack->rc_has_collapsed)  in rack_do_compressed_ack_processing()
15998 	if ((rack->r_collapse_point_valid) &&  in rack_do_compressed_ack_processing()
15999 	    (SEQ_GT(high_seq, rack->r_ctl.high_collapse_point)))  in rack_do_compressed_ack_processing()
16000 		rack->r_collapse_point_valid = 0;  in rack_do_compressed_ack_processing()
16001 	acked_amount = acked = (high_seq - tp->snd_una);  in rack_do_compressed_ack_processing()
16014 		if (SEQ_GEQ(high_seq, rack->r_ctl.roundends) &&  in rack_do_compressed_ack_processing()
16015 		    (rack->rc_new_rnd_needed == 0) &&  in rack_do_compressed_ack_processing()
16025 		 * since cum-ack moved forward.  in rack_do_compressed_ack_processing()
16027 		rack->probe_not_answered = 0;  in rack_do_compressed_ack_processing()
16028 		if (tp->t_flags & TF_NEEDSYN) {  in rack_do_compressed_ack_processing()
16030 			 * T/TCP: Connection was half-synchronized, and our SYN has  in rack_do_compressed_ack_processing()
16032 			 * to non-starred state, increment snd_una for ACK of SYN,  in rack_do_compressed_ack_processing()
16035 			tp->t_flags &= ~TF_NEEDSYN;  in rack_do_compressed_ack_processing()
16036 			tp->snd_una++;  in rack_do_compressed_ack_processing()
16037 			acked_amount = acked = (high_seq - tp->snd_una);  in rack_do_compressed_ack_processing()
16039 		if (acked > sbavail(&so->so_snd))  in rack_do_compressed_ack_processing()
16040 			acked_amount = sbavail(&so->so_snd);  in rack_do_compressed_ack_processing()
16041 		if (IN_FASTRECOVERY(tp->t_flags) &&  in rack_do_compressed_ack_processing()
16042 		    (rack->rack_no_prr == 0))  in rack_do_compressed_ack_processing()
16044 		if (IN_RECOVERY(tp->t_flags)) {  in rack_do_compressed_ack_processing()
16045 			if (SEQ_LT(high_seq, tp->snd_recover) &&  in rack_do_compressed_ack_processing()
16046 			    (SEQ_LT(high_seq, tp->snd_max))) {  in rack_do_compressed_ack_processing()
16052 		}  else if ((rack->rto_from_rec == 1) &&  in rack_do_compressed_ack_processing()
16053 			    SEQ_GEQ(high_seq, tp->snd_recover)) {  in rack_do_compressed_ack_processing()
16056 			 * and never re-entered recovery. The timeout(s)  in rack_do_compressed_ack_processing()
16060 			rack->rto_from_rec = 0;  in rack_do_compressed_ack_processing()
16062 		/* Handle the rack-log-ack part (sendmap) */  in rack_do_compressed_ack_processing()
16063 		if ((sbused(&so->so_snd) == 0) &&  in rack_do_compressed_ack_processing()
16065 		    (tp->t_state >= TCPS_FIN_WAIT_1) &&  in rack_do_compressed_ack_processing()
16066 		    (tp->t_flags & TF_SENTFIN)) {  in rack_do_compressed_ack_processing()
16079 			tp->snd_una = high_seq;  in rack_do_compressed_ack_processing()
16082 		if ((tp->t_flags & TF_PREVVALID) &&  in rack_do_compressed_ack_processing()
16083 		    ((tp->t_flags & TF_RCVD_TSTMP) == 0)) {  in rack_do_compressed_ack_processing()
16084 			tp->t_flags &= ~TF_PREVVALID;  in rack_do_compressed_ack_processing()
16085 			if (tp->t_rxtshift == 1 &&  in rack_do_compressed_ack_processing()
16086 			    (int)(ticks - tp->t_badrxtwin) < 0)  in rack_do_compressed_ack_processing()
16102 				p_cwnd = min(ctf_fixed_maxseg(tp), rack->r_ctl.rc_pace_min_segs);  in rack_do_compressed_ack_processing()
16104 				p_cwnd += tp->snd_cwnd;  in rack_do_compressed_ack_processing()
16107 			if (post_recovery && (tp->snd_cwnd > p_cwnd)) {  in rack_do_compressed_ack_processing()
16108 				/* Must be non-newreno (cubic) getting too ahead of itself */  in rack_do_compressed_ack_processing()
16109 				tp->snd_cwnd = p_cwnd;  in rack_do_compressed_ack_processing()
16112 			mfree = sbcut_locked(&so->so_snd, acked_amount);  in rack_do_compressed_ack_processing()
16113 			tp->snd_una = high_seq;  in rack_do_compressed_ack_processing()
16115 			rack_adjust_sendmap_head(rack, &so->so_snd);  in rack_do_compressed_ack_processing()
16117 			rack_log_wakeup(tp,rack, &so->so_snd, acked, 2);  in rack_do_compressed_ack_processing()
16122 		tp->t_acktime = ticks;  in rack_do_compressed_ack_processing()
16123 		rack_log_progress_event(rack, tp, tp->t_acktime,  in rack_do_compressed_ack_processing()
16126 		tp->t_rxtshift = 0;  in rack_do_compressed_ack_processing()
16127 		RACK_TCPT_RANGESET(tp->t_rxtcur, RACK_REXMTVAL(tp),  in rack_do_compressed_ack_processing()
16128 				   rack_rto_min, rack_rto_max, rack->r_ctl.timer_slop);  in rack_do_compressed_ack_processing()
16129 		rack->rc_tlp_in_progress = 0;  in rack_do_compressed_ack_processing()
16130 		rack->r_ctl.rc_tlp_cnt_out = 0;  in rack_do_compressed_ack_processing()
16132 		if (SEQ_GT(tp->snd_una, tp->snd_recover))  in rack_do_compressed_ack_processing()
16133 			tp->snd_recover = tp->snd_una;  in rack_do_compressed_ack_processing()
16134 		if (SEQ_LT(tp->snd_nxt, tp->snd_max))  in rack_do_compressed_ack_processing()
16135 			tp->snd_nxt = tp->snd_max;  in rack_do_compressed_ack_processing()
16140 		if (rack->r_ctl.rc_hpts_flags & PACE_TMR_RXT)  in rack_do_compressed_ack_processing()
16141 			rack_timer_cancel(tp, rack, rack->r_ctl.rc_rcvtime, __LINE__);  in rack_do_compressed_ack_processing()
16142 		tp->snd_wl2 = high_seq;  in rack_do_compressed_ack_processing()
16143 		tp->t_dupacks = 0;  in rack_do_compressed_ack_processing()
16145 		    (rack->use_fixed_rate == 0) &&  in rack_do_compressed_ack_processing()
16146 		    (rack->in_probe_rtt == 0) &&  in rack_do_compressed_ack_processing()
16147 		    rack->rc_gp_dyn_mul &&  in rack_do_compressed_ack_processing()
16148 		    rack->rc_always_pace) {  in rack_do_compressed_ack_processing()
16152 		if (tp->snd_una == tp->snd_max) {  in rack_do_compressed_ack_processing()
16153 			tp->t_flags &= ~TF_PREVVALID;  in rack_do_compressed_ack_processing()
16154 			rack->r_ctl.retran_during_recovery = 0;  in rack_do_compressed_ack_processing()
16155 			rack->rc_suspicious = 0;  in rack_do_compressed_ack_processing()
16156 			rack->r_ctl.dsack_byte_cnt = 0;  in rack_do_compressed_ack_processing()
16157 			rack->r_ctl.rc_went_idle_time = tcp_get_usecs(NULL);  in rack_do_compressed_ack_processing()
16158 			if (rack->r_ctl.rc_went_idle_time == 0)  in rack_do_compressed_ack_processing()
16159 				rack->r_ctl.rc_went_idle_time = 1;  in rack_do_compressed_ack_processing()
16161 			if (sbavail(&tptosocket(tp)->so_snd) == 0)  in rack_do_compressed_ack_processing()
16162 				tp->t_acktime = 0;  in rack_do_compressed_ack_processing()
16164 			rack->r_wanted_output = 1;  in rack_do_compressed_ack_processing()
16165 			rack_timer_cancel(tp, rack, rack->r_ctl.rc_rcvtime, __LINE__);  in rack_do_compressed_ack_processing()
16166 			sack_filter_clear(&rack->r_ctl.rack_sf, tp->snd_una);  in rack_do_compressed_ack_processing()
16167 			if ((tp->t_state >= TCPS_FIN_WAIT_1) &&  in rack_do_compressed_ack_processing()
16168 			    (sbavail(&so->so_snd) == 0) &&  in rack_do_compressed_ack_processing()
16169 			    (tp->t_flags2 & TF2_DROP_AF_DATA)) {  in rack_do_compressed_ack_processing()
16171 				 * The socket was gone and the  in rack_do_compressed_ack_processing()
16175 				rack_timer_cancel(tp, rack, rack->r_ctl.rc_rcvtime, __LINE__);  in rack_do_compressed_ack_processing()
16176 				/* tcp_close will kill the inp pre-log the Reset */  in rack_do_compressed_ack_processing()
16181 					if (tp->t_flags2 & TF2_TCP_ACCOUNTING) {  in rack_do_compressed_ack_processing()
16182 						tp->tcp_proc_time[ACK_CUMACK] += (rdstc - ts_val);  in rack_do_compressed_ack_processing()
16183 						tp->tcp_proc_time[CYC_HANDLE_ACK] += (rdstc - ts_val);  in rack_do_compressed_ack_processing()
16196 				 * We would normally do drop-with-reset which would  in rack_do_compressed_ack_processing()
16207 			if ((sbused(&so->so_snd) == 0) &&  in rack_do_compressed_ack_processing()
16208 			    (tp->t_state >= TCPS_FIN_WAIT_1) &&  in rack_do_compressed_ack_processing()
16209 			    (tp->t_flags & TF_SENTFIN)) {  in rack_do_compressed_ack_processing()
16217 				if (so->so_rcv.sb_state & SBS_CANTRCVMORE) {  in rack_do_compressed_ack_processing()
16226 					 * We don't change to fin-wait-2 if we have our fin acked  in rack_do_compressed_ack_processing()
16234 		if (sbavail(&so->so_snd)) {  in rack_do_compressed_ack_processing()
16235 			rack->r_wanted_output = 1;  in rack_do_compressed_ack_processing()
16237 				rack_log_progress_event((struct tcp_rack *)tp->t_fb_ptr,  in rack_do_compressed_ack_processing()
16246 					if (tp->t_flags2 & TF2_TCP_ACCOUNTING) {  in rack_do_compressed_ack_processing()
16247 						tp->tcp_proc_time[ACK_CUMACK] += (rdstc - ts_val);  in rack_do_compressed_ack_processing()
16248 						tp->tcp_proc_time[CYC_HANDLE_ACK] += (rdstc - ts_val);  in rack_do_compressed_ack_processing()
16259 			switch(tp->t_state) {  in rack_do_compressed_ack_processing()
16264 					if (tp->t_flags2 & TF2_TCP_ACCOUNTING) {  in rack_do_compressed_ack_processing()
16265 						tp->tcp_proc_time[ACK_CUMACK] += (rdstc - ts_val);  in rack_do_compressed_ack_processing()
16266 						tp->tcp_proc_time[CYC_HANDLE_ACK] += (rdstc - ts_val);  in rack_do_compressed_ack_processing()
16279 					if (tp->t_flags2 & TF2_TCP_ACCOUNTING) {  in rack_do_compressed_ack_processing()
16280 						tp->tcp_proc_time[ACK_CUMACK] += (rdstc - ts_val);  in rack_do_compressed_ack_processing()
16281 						tp->tcp_proc_time[CYC_HANDLE_ACK] += (rdstc - ts_val);  in rack_do_compressed_ack_processing()
16294 					if (tp->t_flags2 & TF2_TCP_ACCOUNTING) {  in rack_do_compressed_ack_processing()
16295 						tp->tcp_proc_time[ACK_CUMACK] += (rdstc - ts_val);  in rack_do_compressed_ack_processing()
16296 						tp->tcp_proc_time[CYC_HANDLE_ACK] += (rdstc - ts_val);  in rack_do_compressed_ack_processing()
16300 				if (so->so_rcv.sb_state & SBS_CANTRCVMORE) {  in rack_do_compressed_ack_processing()
16313 		if (rack->r_fast_output) {  in rack_do_compressed_ack_processing()
16322 			if (tp->t_flags2 & TF2_TCP_ACCOUNTING) {  in rack_do_compressed_ack_processing()
16323 				tp->tcp_proc_time[ACK_CUMACK] += (rdstc - ts_val);  in rack_do_compressed_ack_processing()
16324 				tp->tcp_proc_time[CYC_HANDLE_ACK] += (rdstc - ts_val);  in rack_do_compressed_ack_processing()
16331 			if (tp->t_flags2 & TF2_TCP_ACCOUNTING) {  in rack_do_compressed_ack_processing()
16332 				tp->tcp_proc_time[ACK_RWND] += (rdstc - ts_val);  in rack_do_compressed_ack_processing()
16349 	if ((rack->r_wanted_output != 0) ||  in rack_do_compressed_ack_processing()
16350 	    (rack->r_fast_output != 0) ||  in rack_do_compressed_ack_processing()
16351 	    (tp->t_flags & TF_ACKNOW )) {  in rack_do_compressed_ack_processing()
16361 	if (tp->t_flags2 & TF2_HPTS_CALLS)  in rack_do_compressed_ack_processing()
16362 		tp->t_flags2 &= ~TF2_HPTS_CALLS;  in rack_do_compressed_ack_processing()
16367 	rack_timer_audit(tp, rack, &so->so_snd);  in rack_do_compressed_ack_processing()
16389 	 * cts - is the current time from tv (caller gets ts) in microseconds.  in rack_do_segment_nounlock()
16390 	 * ms_cts - is the current time from tv in milliseconds.  in rack_do_segment_nounlock()
16391 	 * us_cts - is the time that LRO or hardware actually got the packet in microseconds.  in rack_do_segment_nounlock()
16414 	rack = (struct tcp_rack *)tp->t_fb_ptr;  in rack_do_segment_nounlock()
16415 	if (rack->rack_deferred_inited == 0) {  in rack_do_segment_nounlock()
16426 	 * can happen in the non-LRO path where we are pacing and  in rack_do_segment_nounlock()
16431 	if (m->m_flags & M_ACKCMP) {  in rack_do_segment_nounlock()
16436 		rack->rc_ack_required = 0;  in rack_do_segment_nounlock()
16440 	if ((rack->rc_always_pace == 1) &&  in rack_do_segment_nounlock()
16441 	    (rack->rc_ack_can_sendout_data == 0) &&  in rack_do_segment_nounlock()
16442 	    (rack->r_ctl.rc_hpts_flags & PACE_PKT_OUTPUT) &&  in rack_do_segment_nounlock()
16443 	    (TSTMP_LT(us_cts, rack->r_ctl.rc_last_output_to))) {  in rack_do_segment_nounlock()
16450 		slot_remaining = rack->r_ctl.rc_last_output_to - us_cts;  in rack_do_segment_nounlock()
16451 		if (rack->rc_tp->t_flags2 & TF2_DONT_SACK_QUEUE) {  in rack_do_segment_nounlock()
16463 			optlen = (th->th_off << 2) - sizeof(struct tcphdr);  in rack_do_segment_nounlock()
16489 					   rack->r_ctl.gp_bw,  in rack_do_segment_nounlock()
16495 	if (m->m_flags & M_ACKCMP) {  in rack_do_segment_nounlock()
16500 	nsegs = m->m_pkthdr.lro_nsegs;  in rack_do_segment_nounlock()
16507 	if ((m->m_flags & M_TSTMP) ||  in rack_do_segment_nounlock()
16508 	    (m->m_flags & M_TSTMP_LRO)) {  in rack_do_segment_nounlock()
16510 		rack->r_ctl.act_rcv_time.tv_sec = ts.tv_sec;  in rack_do_segment_nounlock()
16511 		rack->r_ctl.act_rcv_time.tv_usec = ts.tv_nsec/1000;  in rack_do_segment_nounlock()
16513 		rack->r_ctl.act_rcv_time = *tv;  in rack_do_segment_nounlock()
16517 	 * Unscale the window into a 32-bit value. For the SYN_SENT state  in rack_do_segment_nounlock()
16520 	tiwin = th->th_win << tp->snd_scale;  in rack_do_segment_nounlock()
16549 	    (th->th_off << 2) - sizeof(struct tcphdr),  in rack_do_segment_nounlock()
16551 	KASSERT(tp->t_state > TCPS_LISTEN, ("%s: TCPS_LISTEN",  in rack_do_segment_nounlock()
16553 	KASSERT(tp->t_state != TCPS_TIME_WAIT, ("%s: TCPS_TIME_WAIT",  in rack_do_segment_nounlock()
16555 	if (tp->t_flags2 & TF2_PROC_SACK_PROHIBIT) {  in rack_do_segment_nounlock()
16563 	if ((tp->t_state >= TCPS_FIN_WAIT_1) &&  in rack_do_segment_nounlock()
16564 	    (tp->t_flags & TF_GPUTINPROG)) {  in rack_do_segment_nounlock()
16573 		bytes = tp->gput_ack - tp->gput_seq;  in rack_do_segment_nounlock()
16574 		if (SEQ_GT(tp->gput_seq, tp->snd_una))  in rack_do_segment_nounlock()
16575 			bytes += tp->gput_seq - tp->snd_una;  in rack_do_segment_nounlock()
16576 		if (bytes > sbavail(&tptosocket(tp)->so_snd)) {  in rack_do_segment_nounlock()
16582 			rack_log_pacing_delay_calc(rack, (tp->gput_ack - tp->gput_seq) /*flex2*/,  in rack_do_segment_nounlock()
16583 						   rack->r_ctl.rc_gp_srtt /*flex1*/,  in rack_do_segment_nounlock()
16584 						   tp->gput_seq,  in rack_do_segment_nounlock()
16586 			tp->t_flags &= ~TF_GPUTINPROG;  in rack_do_segment_nounlock()
16589 	if (tcp_bblogging_on(rack->rc_tp)) {  in rack_do_segment_nounlock()
16595 		if (SEQ_GT(th->th_ack, tp->snd_una)) {  in rack_do_segment_nounlock()
16596 			tcp_req = tcp_req_find_req_for_seq(tp, (th->th_ack-1));  in rack_do_segment_nounlock()
16598 			tcp_req = tcp_req_find_req_for_seq(tp, th->th_ack);  in rack_do_segment_nounlock()
16602 		log.u_bbr.inhpts = tcp_in_hpts(rack->rc_tp);  in rack_do_segment_nounlock()
16603 		if (rack->rack_no_prr == 0)  in rack_do_segment_nounlock()
16604 			log.u_bbr.flex1 = rack->r_ctl.rc_prr_sndcnt;  in rack_do_segment_nounlock()
16607 		log.u_bbr.use_lt_bw = rack->r_ent_rec_ns;  in rack_do_segment_nounlock()
16609 		log.u_bbr.use_lt_bw |= rack->r_might_revert;  in rack_do_segment_nounlock()
16610 		log.u_bbr.flex2 = rack->r_ctl.rc_num_maps_alloced;  in rack_do_segment_nounlock()
16611 		log.u_bbr.bbr_state = rack->rc_free_cnt;  in rack_do_segment_nounlock()
16612 		log.u_bbr.inflight = ctf_flight_size(rack->rc_tp, rack->r_ctl.rc_sacked);  in rack_do_segment_nounlock()
16613 		log.u_bbr.pkts_out = rack->rc_tp->t_maxseg;  in rack_do_segment_nounlock()
16614 		log.u_bbr.flex3 = m->m_flags;  in rack_do_segment_nounlock()
16615 		log.u_bbr.flex4 = rack->r_ctl.rc_hpts_flags;  in rack_do_segment_nounlock()
16622 		if (m->m_flags & M_TSTMP) {  in rack_do_segment_nounlock()
16628 		} else if (m->m_flags & M_TSTMP_LRO) {  in rack_do_segment_nounlock()
16637 		log.u_bbr.delRate = m->m_pkthdr.rcv_tstmp;  in rack_do_segment_nounlock()
16639 		log.u_bbr.applimited = tp->t_tcpreq_closed;  in rack_do_segment_nounlock()
16641 		log.u_bbr.applimited |= tp->t_tcpreq_open;  in rack_do_segment_nounlock()
16643 		log.u_bbr.applimited |= tp->t_tcpreq_req;  in rack_do_segment_nounlock()
16647 			log.u_bbr.pkt_epoch = (tcp_req->localtime / HPTS_USEC_IN_SEC);  in rack_do_segment_nounlock()
16649 			log.u_bbr.delivered = (tcp_req->localtime % HPTS_USEC_IN_SEC);  in rack_do_segment_nounlock()
16650 			log.u_bbr.rttProp = tcp_req->timestamp;  in rack_do_segment_nounlock()
16651 			log.u_bbr.cur_del_rate = tcp_req->start;  in rack_do_segment_nounlock()
16652 			if (tcp_req->flags & TCP_TRK_TRACK_FLG_OPEN) {  in rack_do_segment_nounlock()
16656 				log.u_bbr.bw_inuse = tcp_req->end;  in rack_do_segment_nounlock()
16658 			log.u_bbr.flex6 = tcp_req->start_seq;  in rack_do_segment_nounlock()
16659 			if (tcp_req->flags & TCP_TRK_TRACK_FLG_COMP) {  in rack_do_segment_nounlock()
16661 				log.u_bbr.epoch = tcp_req->end_seq;  in rack_do_segment_nounlock()
16665 		TCP_LOG_EVENTP(tp, th, &so->so_rcv, &so->so_snd, TCP_LOG_IN, 0,  in rack_do_segment_nounlock()
16670 		rack->rc_ack_required = 0;  in rack_do_segment_nounlock()
16679 	 * If a segment with the ACK-bit set arrives in the SYN-SENT state  in rack_do_segment_nounlock()
16682 	if ((tp->t_state == TCPS_SYN_SENT) && (thflags & TH_ACK) &&  in rack_do_segment_nounlock()
16683 	    (SEQ_LEQ(th->th_ack, tp->iss) || SEQ_GT(th->th_ack, tp->snd_max))) {  in rack_do_segment_nounlock()
16698 	if ((tp->t_flags & TF_RCVD_TSTMP) && !(to.to_flags & TOF_TS) &&  in rack_do_segment_nounlock()
16706 	 * Segment received on connection. Reset idle time and keep-alive  in rack_do_segment_nounlock()
16710 	if  (tp->t_idle_reduce &&  in rack_do_segment_nounlock()
16711 	     (tp->snd_max == tp->snd_una) &&  in rack_do_segment_nounlock()
16712 	     (TICKS_2_USEC(ticks - tp->t_rcvtime) >= tp->t_rxtcur)) {  in rack_do_segment_nounlock()
16716 	tp->t_rcvtime = ticks;  in rack_do_segment_nounlock()
16718 	stats_voi_update_abs_ulong(tp->t_stats, VOI_TCP_FRWIN, tiwin);  in rack_do_segment_nounlock()
16720 	if (tiwin > rack->r_ctl.rc_high_rwnd)  in rack_do_segment_nounlock()
16721 		rack->r_ctl.rc_high_rwnd = tiwin;  in rack_do_segment_nounlock()
16727 	    tcp_packets_this_ack(tp, th->th_ack),  in rack_do_segment_nounlock()
16729 		rack_cong_signal(tp, CC_ECN, th->th_ack, __LINE__);  in rack_do_segment_nounlock()
16737 		to.to_tsecr -= tp->ts_offset;  in rack_do_segment_nounlock()
16741 	if ((rack->r_rcvpath_rtt_up == 1) &&  in rack_do_segment_nounlock()
16743 	    (TSTMP_GEQ(to.to_tsecr, rack->r_ctl.last_rcv_tstmp_for_rtt))) {  in rack_do_segment_nounlock()
16754 		if (TSTMP_GT(cts, rack->r_ctl.last_time_of_arm_rcv))  in rack_do_segment_nounlock()
16755 		    rtt = (cts - rack->r_ctl.last_time_of_arm_rcv);  in rack_do_segment_nounlock()
16756 		rack->r_rcvpath_rtt_up = 0;  in rack_do_segment_nounlock()
16767 	if (rack->r_state == 0) {  in rack_do_segment_nounlock()
16769 		KASSERT(rack->rc_inp != NULL,  in rack_do_segment_nounlock()
16770 		    ("%s: rack->rc_inp unexpectedly NULL", __func__));  in rack_do_segment_nounlock()
16771 		if (rack->rc_inp == NULL) {  in rack_do_segment_nounlock()
16772 			rack->rc_inp = inp;  in rack_do_segment_nounlock()
16782 		if (tp->t_state == TCPS_SYN_SENT && (thflags & TH_SYN)) {  in rack_do_segment_nounlock()
16786 			    (tp->t_flags & TF_REQ_SCALE)) {  in rack_do_segment_nounlock()
16787 				tp->t_flags |= TF_RCVD_SCALE;  in rack_do_segment_nounlock()
16788 				tp->snd_scale = to.to_wscale;  in rack_do_segment_nounlock()
16790 				tp->t_flags &= ~TF_REQ_SCALE;  in rack_do_segment_nounlock()
16795 			tp->snd_wnd = th->th_win;  in rack_do_segment_nounlock()
16798 			    (tp->t_flags & TF_REQ_TSTMP)) {  in rack_do_segment_nounlock()
16799 				tp->t_flags |= TF_RCVD_TSTMP;  in rack_do_segment_nounlock()
16800 				tp->ts_recent = to.to_tsval;  in rack_do_segment_nounlock()
16801 				tp->ts_recent_age = cts;  in rack_do_segment_nounlock()
16803 				tp->t_flags &= ~TF_REQ_TSTMP;  in rack_do_segment_nounlock()
16807 			if ((tp->t_flags & TF_SACK_PERMIT) &&  in rack_do_segment_nounlock()
16809 				tp->t_flags &= ~TF_SACK_PERMIT;  in rack_do_segment_nounlock()
16810 			if (tp->t_flags & TF_FASTOPEN) {  in rack_do_segment_nounlock()
16817 						if ((inp->inp_vflag & INP_IPV6) != 0)  in rack_do_segment_nounlock()
16830 		 * TF_SACK_PERMIT is set and the sack-not-required is clear.  in rack_do_segment_nounlock()
16831 		 * The code now does do dup-ack counting so if you don't  in rack_do_segment_nounlock()
16837 		    ((tp->t_flags & TF_SACK_PERMIT) == 0)) {  in rack_do_segment_nounlock()
16839 			(*tp->t_fb->tfb_tcp_do_segment)(tp, m, th, drop_hdrlen,  in rack_do_segment_nounlock()
16847 		sack_filter_clear(&rack->r_ctl.rack_sf, th->th_ack);  in rack_do_segment_nounlock()
16851 	us_cts = tcp_tv_to_usectick(&rack->r_ctl.act_rcv_time);  in rack_do_segment_nounlock()
16852 	if ((rack->rc_gp_dyn_mul) &&  in rack_do_segment_nounlock()
16853 	    (rack->use_fixed_rate == 0) &&  in rack_do_segment_nounlock()
16854 	    (rack->rc_always_pace)) {  in rack_do_segment_nounlock()
16859 	if ((rack->forced_ack) &&  in rack_do_segment_nounlock()
16865 	 * always. All other times (timers etc) we must have a rack-state  in rack_do_segment_nounlock()
16868 	rack->r_ctl.rc_rcvtime = cts;  in rack_do_segment_nounlock()
16869 	if (rack->r_state != tp->t_state)  in rack_do_segment_nounlock()
16871 	if (SEQ_GT(th->th_ack, tp->snd_una) &&  in rack_do_segment_nounlock()
16872 	    (rsm = tqhash_min(rack->r_ctl.tqh)) != NULL)  in rack_do_segment_nounlock()
16874 	prev_state = rack->r_state;  in rack_do_segment_nounlock()
16876 	    ((SEQ_GEQ(th->th_seq, tp->last_ack_sent) &&  in rack_do_segment_nounlock()
16877 	      SEQ_LT(th->th_seq, tp->last_ack_sent + tp->rcv_wnd)) ||  in rack_do_segment_nounlock()
16878 	     (tp->rcv_wnd == 0 && tp->last_ack_sent == th->th_seq))) {  in rack_do_segment_nounlock()
16880 		tcp_trace_point(rack->rc_tp, TCP_TP_RESET_RCV);  in rack_do_segment_nounlock()
16882 	retval = (*rack->r_substate) (m, th, so,  in rack_do_segment_nounlock()
16888 		 * is gone.  in rack_do_segment_nounlock()
16891 		if ((rack->rc_gp_dyn_mul) &&  in rack_do_segment_nounlock()
16892 		    (rack->rc_always_pace) &&  in rack_do_segment_nounlock()
16893 		    (rack->use_fixed_rate == 0) &&  in rack_do_segment_nounlock()
16894 		    rack->in_probe_rtt &&  in rack_do_segment_nounlock()
16895 		    (rack->r_ctl.rc_time_probertt_starts == 0)) {  in rack_do_segment_nounlock()
16902 		if (rack->set_pacing_done_a_iw == 0) {  in rack_do_segment_nounlock()
16904 			if ((tp->snd_una - tp->iss) > (ctf_fixed_maxseg(tp) * 10)) {  in rack_do_segment_nounlock()
16906 				rack->set_pacing_done_a_iw = 1;  in rack_do_segment_nounlock()
16917 		 * use of 0xf here since we only have 11 counter (0 - 0xa) and  in rack_do_segment_nounlock()
16925 			if (tp->t_flags2 & TF2_TCP_ACCOUNTING) {  in rack_do_segment_nounlock()
16926 				tp->tcp_proc_time[ack_val_set] += (crtsc - ts_val);  in rack_do_segment_nounlock()
16931 			if ((rack->r_wanted_output != 0) ||  in rack_do_segment_nounlock()
16932 			    (tp->t_flags & TF_ACKNOW) ||  in rack_do_segment_nounlock()
16933 			    (rack->r_fast_output != 0)) {  in rack_do_segment_nounlock()
16946 		} else if ((nxt_pkt == 0) && (tp->t_flags & TF_ACKNOW)) {  in rack_do_segment_nounlock()
16950 			   (tcp_in_hpts(rack->rc_tp) == 0)) {  in rack_do_segment_nounlock()
16960 		if ((nxt_pkt == 0) && (tp->t_flags2 & TF2_HPTS_CALLS))  in rack_do_segment_nounlock()
16961 			tp->t_flags2 &= ~TF2_HPTS_CALLS;  in rack_do_segment_nounlock()
16972 		if (SEQ_GEQ(tp->snd_una, rack->r_ctl.roundends) &&  in rack_do_segment_nounlock()
16973 		    (rack->rc_new_rnd_needed == 0) &&  in rack_do_segment_nounlock()
16979 			rack_new_round_setup(tp, rack, tp->snd_una);  in rack_do_segment_nounlock()
16982 		    ((rack->r_ctl.rc_hpts_flags & PACE_TMR_MASK) == 0) &&  in rack_do_segment_nounlock()
16983 		    (SEQ_GT(tp->snd_max, tp->snd_una) ||  in rack_do_segment_nounlock()
16984 		     (tp->t_flags & TF_DELACK) ||  in rack_do_segment_nounlock()
16985 		     ((V_tcp_always_keepalive || rack->rc_inp->inp_socket->so_options & SO_KEEPALIVE) &&  in rack_do_segment_nounlock()
16986 		      (tp->t_state <= TCPS_CLOSING)))) {  in rack_do_segment_nounlock()
16988 			if ((tp->snd_max == tp->snd_una) &&  in rack_do_segment_nounlock()
16989 			    ((tp->t_flags & TF_DELACK) == 0) &&  in rack_do_segment_nounlock()
16990 			    (tcp_in_hpts(rack->rc_tp)) &&  in rack_do_segment_nounlock()
16991 			    (rack->r_ctl.rc_hpts_flags & PACE_PKT_OUTPUT)) {  in rack_do_segment_nounlock()
16997 					if (rack->r_ctl.rc_hpts_flags & PACE_PKT_OUTPUT) {  in rack_do_segment_nounlock()
16999 						if (TSTMP_GT(rack->r_ctl.rc_last_output_to, us_cts)) {  in rack_do_segment_nounlock()
17000 							rack->r_early = 1;  in rack_do_segment_nounlock()
17001 							rack->r_ctl.rc_agg_early += (rack->r_ctl.rc_last_output_to - us_cts);  in rack_do_segment_nounlock()
17004 						rack->r_ctl.rc_hpts_flags &= ~PACE_PKT_OUTPUT;  in rack_do_segment_nounlock()
17021 			rack_timer_audit(tp, rack, &so->so_snd);  in rack_do_segment_nounlock()
17027 			rack->r_wanted_output = 0;  in rack_do_segment_nounlock()
17043 	if (!STAILQ_EMPTY(&tp->t_inqueue)) {  in rack_do_segment()
17049 	if (m->m_flags & M_TSTMP_LRO) {  in rack_do_segment()
17068 	/* Return the next guy to be re-transmitted */  in tcp_rack_output()
17069 	if (tqhash_empty(rack->r_ctl.tqh)) {  in tcp_rack_output()
17072 	if (tp->t_flags & TF_SENTFIN) {  in tcp_rack_output()
17077 	rsm = TAILQ_FIRST(&rack->r_ctl.rc_tmap);  in tcp_rack_output()
17078 	if (rack->r_must_retran && rsm && (rsm->r_flags & RACK_MUST_RXT)) {  in tcp_rack_output()
17081 	if (rsm && ((rsm->r_flags & RACK_ACKED) == 0)) {  in tcp_rack_output()
17089 	if (((rack->rc_tp->t_flags & TF_SACK_PERMIT) == 0) &&  in tcp_rack_output()
17090 	    (rsm->r_dupack >= DUP_ACK_THRESHOLD)) {  in tcp_rack_output()
17097 	if (rsm->r_flags & RACK_ACKED) {  in tcp_rack_output()
17100 	if (((rsm->r_flags & RACK_SACK_PASSED) == 0) &&  in tcp_rack_output()
17101 	    (rsm->r_dupack < DUP_ACK_THRESHOLD)) {  in tcp_rack_output()
17106 	idx = rsm->r_rtr_cnt - 1;  in tcp_rack_output()
17107 	ts_low = (uint32_t)rsm->r_tim_lastsent[idx];  in tcp_rack_output()
17114 	if ((tsused - ts_low) < thresh) {  in tcp_rack_output()
17118 	if ((rsm->r_dupack >= DUP_ACK_THRESHOLD) ||  in tcp_rack_output()
17119 	    ((rsm->r_flags & RACK_SACK_PASSED))) {  in tcp_rack_output()
17121 		 * We have passed the dup-ack threshold <or>  in tcp_rack_output()
17124 		 * it is only the dup-ack threshold that  in tcp_rack_output()
17128 		rack_log_retran_reason(rack, rsm, (tsused - ts_low), thresh, 1);  in tcp_rack_output()
17129 		rack->r_fast_output = 0;  in tcp_rack_output()
17140 	if (tcp_bblogging_on(rack->rc_tp)) {  in rack_log_pacing_delay_calc()
17161 		log.u_bbr.flex3 = rack->r_ctl.rc_pace_min_segs;  in rack_log_pacing_delay_calc()
17162 		log.u_bbr.flex4 = rack->r_ctl.rc_pace_max_segs;  in rack_log_pacing_delay_calc()
17163 		log.u_bbr.flex5 = rack->r_ctl.rack_per_of_gp_ss;  in rack_log_pacing_delay_calc()
17164 		log.u_bbr.flex6 = rack->r_ctl.rack_per_of_gp_ca;  in rack_log_pacing_delay_calc()
17165 		log.u_bbr.use_lt_bw = rack->rc_ack_can_sendout_data;  in rack_log_pacing_delay_calc()
17167 		log.u_bbr.use_lt_bw |= rack->r_late;  in rack_log_pacing_delay_calc()
17169 		log.u_bbr.use_lt_bw |= rack->r_early;  in rack_log_pacing_delay_calc()
17171 		log.u_bbr.use_lt_bw |= rack->app_limited_needs_set;  in rack_log_pacing_delay_calc()
17173 		log.u_bbr.use_lt_bw |= rack->rc_gp_filled;  in rack_log_pacing_delay_calc()
17175 		log.u_bbr.use_lt_bw |= rack->measure_saw_probe_rtt;  in rack_log_pacing_delay_calc()
17177 		log.u_bbr.use_lt_bw |= rack->in_probe_rtt;  in rack_log_pacing_delay_calc()
17179 		log.u_bbr.use_lt_bw |= rack->gp_ready;  in rack_log_pacing_delay_calc()
17181 		log.u_bbr.epoch = rack->r_ctl.rc_agg_delayed;  in rack_log_pacing_delay_calc()
17182 		log.u_bbr.lt_epoch = rack->r_ctl.rc_agg_early;  in rack_log_pacing_delay_calc()
17183 		log.u_bbr.applimited = rack->r_ctl.rack_per_of_gp_rec;  in rack_log_pacing_delay_calc()
17186 		if (rack->r_ctl.gp_bw == 0)  in rack_log_pacing_delay_calc()
17191 		log.u_bbr.pkts_out = rack->r_ctl.rc_rack_min_rtt;  in rack_log_pacing_delay_calc()
17192 		log.u_bbr.lost = rack->r_ctl.rc_probertt_sndmax_atexit;  in rack_log_pacing_delay_calc()
17194 		if (rack->r_ctl.cwnd_to_use < rack->rc_tp->snd_ssthresh) {  in rack_log_pacing_delay_calc()
17203 		log.u_bbr.inflight = ctf_flight_size(rack->rc_tp, rack->r_ctl.rc_sacked);  in rack_log_pacing_delay_calc()
17204 		log.u_bbr.cwnd_gain = rack->rc_gp_saw_rec;  in rack_log_pacing_delay_calc()
17206 		log.u_bbr.cwnd_gain |= rack->rc_gp_saw_ss;  in rack_log_pacing_delay_calc()
17208 		log.u_bbr.cwnd_gain |= rack->rc_gp_saw_ca;  in rack_log_pacing_delay_calc()
17210 		log.u_bbr.bbr_state = rack->dgp_on;  in rack_log_pacing_delay_calc()
17212 		log.u_bbr.bbr_state |= rack->rc_pace_to_cwnd;  in rack_log_pacing_delay_calc()
17214 		TCP_LOG_EVENTP(rack->rc_tp, NULL,  in rack_log_pacing_delay_calc()
17215 		    &rack->rc_inp->inp_socket->so_rcv,  in rack_log_pacing_delay_calc()
17216 		    &rack->rc_inp->inp_socket->so_snd,  in rack_log_pacing_delay_calc()
17227 	user_max = rack->rc_user_set_max_segs * mss;  in rack_get_pacing_len()
17228 	if (rack->rc_force_max_seg) {  in rack_get_pacing_len()
17231 	if (rack->use_fixed_rate &&  in rack_get_pacing_len()
17232 	    ((rack->r_ctl.crte == NULL) ||  in rack_get_pacing_len()
17233 	     (bw != rack->r_ctl.crte->rate))) {  in rack_get_pacing_len()
17238 	    (rack->r_ctl.rc_user_set_min_segs == 1))  in rack_get_pacing_len()
17243 	new_tso = tcp_get_pacing_burst_size_w_divisor(rack->rc_tp, bw, mss,  in rack_get_pacing_len()
17244 		     pace_one, rack->r_ctl.crte, NULL, rack->r_ctl.pace_len_divisor);  in rack_get_pacing_len()
17247 	if (rack->rc_hybrid_mode && rack->r_ctl.client_suggested_maxseg) {  in rack_get_pacing_len()
17248 		if (((uint32_t)rack->r_ctl.client_suggested_maxseg * mss) > new_tso)  in rack_get_pacing_len()
17249 			new_tso = (uint32_t)rack->r_ctl.client_suggested_maxseg * mss;  in rack_get_pacing_len()
17251 	if (rack->r_ctl.rc_user_set_min_segs &&  in rack_get_pacing_len()
17252 	    ((rack->r_ctl.rc_user_set_min_segs * mss) > new_tso))  in rack_get_pacing_len()
17253 	    new_tso = rack->r_ctl.rc_user_set_min_segs * mss;  in rack_get_pacing_len()
17266 		 * nearly zero, maybe because of a time-out?  in rack_arrive_at_discounted_rate()
17267 		 * Lets drop back to the lt-bw.  in rack_arrive_at_discounted_rate()
17273 	} else if  (IN_RECOVERY(rack->rc_tp->t_flags)) {  in rack_arrive_at_discounted_rate()
17278 		if (rack->rack_hibeta == 0) {  in rack_arrive_at_discounted_rate()
17282 			reduced_win = window_input * rack->r_ctl.saved_hibeta;  in rack_arrive_at_discounted_rate()
17284 			gain = rack->r_ctl.saved_hibeta;  in rack_arrive_at_discounted_rate()
17316 	rack->r_via_fill_cw = 0;  in pace_to_fill_cwnd()
17317 	if (ctf_flight_size(rack->rc_tp, rack->r_ctl.rc_sacked) > rack->r_ctl.cwnd_to_use)  in pace_to_fill_cwnd()
17319 	if ((ctf_outstanding(rack->rc_tp) + (segsiz-1)) > rack->rc_tp->snd_wnd)  in pace_to_fill_cwnd()
17321 	if (rack->r_ctl.rc_last_us_rtt == 0)  in pace_to_fill_cwnd()
17323 	if (rack->rc_pace_fill_if_rttin_range &&  in pace_to_fill_cwnd()
17324 	    (rack->r_ctl.rc_last_us_rtt >=  in pace_to_fill_cwnd()
17325 	     (get_filter_value_small(&rack->r_ctl.rc_gp_min_rtt) * rack->rtt_limit_mul))) {  in pace_to_fill_cwnd()
17329 	if (rack->r_ctl.fillcw_cap && *rate_wanted >= rack->r_ctl.fillcw_cap)  in pace_to_fill_cwnd()
17332 	 * first lets calculate the b/w based on the last us-rtt  in pace_to_fill_cwnd()
17335 	fill_bw = min(rack->rc_tp->snd_cwnd, rack->r_ctl.cwnd_to_use);  in pace_to_fill_cwnd()
17336 	if (rack->rc_fillcw_apply_discount) {  in pace_to_fill_cwnd()
17345 	if (fill_bw > rack->rc_tp->snd_wnd)  in pace_to_fill_cwnd()
17346 		fill_bw = rack->rc_tp->snd_wnd;  in pace_to_fill_cwnd()
17349 	fill_bw /= (uint64_t)rack->r_ctl.rc_last_us_rtt;  in pace_to_fill_cwnd()
17351 	if (rack->r_ctl.fillcw_cap && fill_bw >= rack->r_ctl.fillcw_cap)  in pace_to_fill_cwnd()
17352 		fill_bw = rack->r_ctl.fillcw_cap;  in pace_to_fill_cwnd()
17357 		 * We want to limit fill-cw to the some multiplier  in pace_to_fill_cwnd()
17371 		if (rack_verbose_logging && tcp_bblogging_on(rack->rc_tp)) {  in pace_to_fill_cwnd()
17384 			tcp_log_event(rack->rc_tp, NULL, NULL, NULL,  in pace_to_fill_cwnd()
17397 	rack->r_via_fill_cw = 1;  in pace_to_fill_cwnd()
17398 	if (rack->r_rack_hw_rate_caps &&  in pace_to_fill_cwnd()
17399 	    (rack->r_ctl.crte != NULL)) {  in pace_to_fill_cwnd()
17402 		high_rate = tcp_hw_highest_rate(rack->r_ctl.crte);  in pace_to_fill_cwnd()
17407 				rack->r_via_fill_cw = 0;  in pace_to_fill_cwnd()
17416 	} else if ((rack->r_ctl.crte == NULL) &&  in pace_to_fill_cwnd()
17417 		   (rack->rack_hdrw_pacing == 0) &&  in pace_to_fill_cwnd()
17418 		   (rack->rack_hdw_pace_ena) &&  in pace_to_fill_cwnd()
17419 		   rack->r_rack_hw_rate_caps &&  in pace_to_fill_cwnd()
17420 		   (rack->rack_attempt_hdwr_pace == 0) &&  in pace_to_fill_cwnd()
17421 		   (rack->rc_inp->inp_route.ro_nh != NULL) &&  in pace_to_fill_cwnd()
17422 		   (rack->rc_inp->inp_route.ro_nh->nh_ifp != NULL)) {  in pace_to_fill_cwnd()
17429 		high_rate = tcp_hw_highest_rate_ifp(rack->rc_inp->inp_route.ro_nh->nh_ifp, rack->rc_inp);  in pace_to_fill_cwnd()
17438 	if (rack->r_ctl.bw_rate_cap && (fill_bw > rack->r_ctl.bw_rate_cap)) {  in pace_to_fill_cwnd()
17439 		rack_log_hybrid_bw(rack, rack->rc_tp->snd_max,  in pace_to_fill_cwnd()
17441 		fill_bw = rack->r_ctl.bw_rate_cap;  in pace_to_fill_cwnd()
17470 	    (rack->r_ctl.rc_user_set_min_segs == 1))  in rack_get_pacing_delay()
17474 	if (rack->rc_always_pace == 0) {  in rack_get_pacing_delay()
17490 		if (rack->r_ctl.rc_rack_min_rtt)  in rack_get_pacing_delay()
17491 			srtt = rack->r_ctl.rc_rack_min_rtt;  in rack_get_pacing_delay()
17493 			srtt = max(tp->t_srtt, 1);  in rack_get_pacing_delay()
17494 		if (rack->r_ctl.rc_rack_largest_cwnd)  in rack_get_pacing_delay()
17495 			cwnd = rack->r_ctl.rc_rack_largest_cwnd;  in rack_get_pacing_delay()
17497 			cwnd = rack->r_ctl.cwnd_to_use;  in rack_get_pacing_delay()
17517 				slot -= reduce;  in rack_get_pacing_delay()
17522 		if (rack->rc_pace_to_cwnd) {  in rack_get_pacing_delay()
17526 			rack->rc_ack_can_sendout_data = 1;  in rack_get_pacing_delay()
17531 		/* RRS: We insert non-paced call to stats here for len */  in rack_get_pacing_delay()
17539 		if ((rack->r_rr_config == 1) && rsm) {  in rack_get_pacing_delay()
17540 			return (rack->r_ctl.rc_min_to);  in rack_get_pacing_delay()
17542 		if (rack->use_fixed_rate) {  in rack_get_pacing_delay()
17544 		} else if ((rack->r_ctl.init_rate == 0) &&  in rack_get_pacing_delay()
17545 			   (rack->r_ctl.gp_bw == 0)) {  in rack_get_pacing_delay()
17548 		} else if (rack->dgp_on) {  in rack_get_pacing_delay()
17554 			rate_wanted = min(rack->rc_tp->snd_cwnd, rack->r_ctl.cwnd_to_use);  in rack_get_pacing_delay()
17557 				if (rate_wanted > rack->rc_tp->snd_wnd)  in rack_get_pacing_delay()
17558 					rate_wanted = rack->rc_tp->snd_wnd;  in rack_get_pacing_delay()
17561 				rate_wanted /= (uint64_t)rack->r_ctl.rc_last_us_rtt;  in rack_get_pacing_delay()
17564 			rack_log_pacing_delay_calc(rack, rack->rc_tp->snd_cwnd,  in rack_get_pacing_delay()
17565 						   rack->r_ctl.cwnd_to_use,  in rack_get_pacing_delay()
17567 						   rack->r_ctl.rc_last_us_rtt,  in rack_get_pacing_delay()
17571 		    ((rack->gp_ready == 0) && (rack->use_fixed_rate == 0))) {  in rack_get_pacing_delay()
17580 		segs = (len + segsiz - 1) / segsiz;  in rack_get_pacing_delay()
17582 		 * We need the diff between 1514 bytes (e-mtu with e-hdr)  in rack_get_pacing_delay()
17588 		oh =  (tp->t_maxseg - segsiz) + sizeof(struct tcphdr);  in rack_get_pacing_delay()
17589 		if (rack->r_is_v6) {  in rack_get_pacing_delay()
17607 			if (rack->r_ctl.crte) {  in rack_get_pacing_delay()
17612 				tcp_rel_pacing_rate(rack->r_ctl.crte, rack->rc_tp);  in rack_get_pacing_delay()
17613 				rack->r_ctl.crte = NULL;  in rack_get_pacing_delay()
17614 				rack->rack_attempt_hdwr_pace = 0;  in rack_get_pacing_delay()
17615 				rack->rack_hdrw_pacing = 0;  in rack_get_pacing_delay()
17618 		if (rack->r_ctl.crte &&  in rack_get_pacing_delay()
17619 		    (tcp_hw_highest_rate(rack->r_ctl.crte) < rate_wanted)) {  in rack_get_pacing_delay()
17625 			if (rack->r_rack_hw_rate_caps == 0) {  in rack_get_pacing_delay()
17632 				tcp_rel_pacing_rate(rack->r_ctl.crte, rack->rc_tp);  in rack_get_pacing_delay()
17633 				rack->r_ctl.crte = NULL;  in rack_get_pacing_delay()
17634 				rack->rack_attempt_hdwr_pace = 0;  in rack_get_pacing_delay()
17635 				rack->rack_hdrw_pacing = 0;  in rack_get_pacing_delay()
17638 		if ((rack->r_ctl.crte != NULL) && (rack->rc_inp->inp_snd_tag == NULL)) {  in rack_get_pacing_delay()
17643 			tcp_rel_pacing_rate(rack->r_ctl.crte, rack->rc_tp);  in rack_get_pacing_delay()
17644 			rack->r_ctl.crte = NULL;  in rack_get_pacing_delay()
17645 			/* Lets re-allow attempting to setup pacing */  in rack_get_pacing_delay()
17646 			rack->rack_hdrw_pacing = 0;  in rack_get_pacing_delay()
17647 			rack->rack_attempt_hdwr_pace = 0;  in rack_get_pacing_delay()
17652 		prev_fill = rack->r_via_fill_cw;  in rack_get_pacing_delay()
17653 		if ((rack->rc_pace_to_cwnd) &&  in rack_get_pacing_delay()
17655 		    (rack->dgp_on == 1) &&  in rack_get_pacing_delay()
17656 		    (rack->use_fixed_rate == 0) &&  in rack_get_pacing_delay()
17657 		    (rack->in_probe_rtt == 0) &&  in rack_get_pacing_delay()
17658 		    (IN_FASTRECOVERY(rack->rc_tp->t_flags) == 0)) {  in rack_get_pacing_delay()
17664 			/* Re-check to make sure we are not exceeding our max b/w */  in rack_get_pacing_delay()
17665 			if ((rack->r_ctl.crte != NULL) &&  in rack_get_pacing_delay()
17666 			    (tcp_hw_highest_rate(rack->r_ctl.crte) < rate_wanted)) {  in rack_get_pacing_delay()
17672 				if (rack->r_rack_hw_rate_caps == 0) {  in rack_get_pacing_delay()
17679 					tcp_rel_pacing_rate(rack->r_ctl.crte, rack->rc_tp);  in rack_get_pacing_delay()
17680 					rack->r_ctl.crte = NULL;  in rack_get_pacing_delay()
17681 					rack->rack_attempt_hdwr_pace = 0;  in rack_get_pacing_delay()
17682 					rack->rack_hdrw_pacing = 0;  in rack_get_pacing_delay()
17683 					rack_set_pace_segments(rack->rc_tp, rack, __LINE__, NULL);  in rack_get_pacing_delay()
17687 		if ((rack->rc_inp->inp_route.ro_nh != NULL) &&  in rack_get_pacing_delay()
17688 		    (rack->rc_inp->inp_route.ro_nh->nh_ifp != NULL)) {  in rack_get_pacing_delay()
17689 			if ((rack->rack_hdw_pace_ena) &&  in rack_get_pacing_delay()
17691 			    (rack->rack_hdrw_pacing == 0) &&  in rack_get_pacing_delay()
17692 			    (rack->rack_attempt_hdwr_pace == 0)) {  in rack_get_pacing_delay()
17697 				rack->rack_attempt_hdwr_pace = 1;  in rack_get_pacing_delay()
17698 				rack->r_ctl.crte = tcp_set_pacing_rate(rack->rc_tp,  in rack_get_pacing_delay()
17699 								       rack->rc_inp->inp_route.ro_nh->nh_ifp,  in rack_get_pacing_delay()
17702 								       &err, &rack->r_ctl.crte_prev_rate);  in rack_get_pacing_delay()
17703 				if (rack->r_ctl.crte) {  in rack_get_pacing_delay()
17704 					rack->rack_hdrw_pacing = 1;  in rack_get_pacing_delay()
17705 					rack->r_ctl.rc_pace_max_segs = tcp_get_pacing_burst_size_w_divisor(tp, rate_wanted, segsiz,  in rack_get_pacing_delay()
17706 													   pace_one, rack->r_ctl.crte,  in rack_get_pacing_delay()
17707 													   NULL, rack->r_ctl.pace_len_divisor);  in rack_get_pacing_delay()
17709 							     rate_wanted, rack->r_ctl.crte->rate, __LINE__,  in rack_get_pacing_delay()
17711 					rack->r_ctl.last_hw_bw_req = rate_wanted;  in rack_get_pacing_delay()
17715 			} else if (rack->rack_hdrw_pacing &&  in rack_get_pacing_delay()
17716 				   (rack->r_ctl.last_hw_bw_req != rate_wanted)) {  in rack_get_pacing_delay()
17720 				if (rack->r_up_only &&  in rack_get_pacing_delay()
17721 				    (rate_wanted < rack->r_ctl.crte->rate)) {  in rack_get_pacing_delay()
17726 					 *   previous  |  this-time  in rack_get_pacing_delay()
17727 					 * A)     0      |     0   -- fill_cw not in the picture  in rack_get_pacing_delay()
17728 					 * B)     1      |     0   -- we were doing a fill-cw but now are not  in rack_get_pacing_delay()
17729 					 * C)     1      |     1   -- all rates from fill_cw  in rack_get_pacing_delay()
17730 					 * D)     0      |     1   -- we were doing non-fill and now we are filling  in rack_get_pacing_delay()
17737 					if (!((prev_fill == 1) && (rack->r_via_fill_cw == 0)))  in rack_get_pacing_delay()
17740 				if ((rate_wanted > rack->r_ctl.crte->rate) ||  in rack_get_pacing_delay()
17741 				    (rate_wanted <= rack->r_ctl.crte_prev_rate)) {  in rack_get_pacing_delay()
17749 								     bw_est, rack->r_ctl.crte->rate, __LINE__,  in rack_get_pacing_delay()
17751 						tcp_rel_pacing_rate(rack->r_ctl.crte, rack->rc_tp);  in rack_get_pacing_delay()
17752 						rack->r_ctl.crte = NULL;  in rack_get_pacing_delay()
17753 						rack->rack_attempt_hdwr_pace = 0;  in rack_get_pacing_delay()
17754 						rack->rack_hdrw_pacing = 0;  in rack_get_pacing_delay()
17755 						rack_set_pace_segments(rack->rc_tp, rack, __LINE__, &rate_wanted);  in rack_get_pacing_delay()
17758 					nrte = tcp_chg_pacing_rate(rack->r_ctl.crte,  in rack_get_pacing_delay()
17759 								   rack->rc_tp,  in rack_get_pacing_delay()
17760 								   rack->rc_inp->inp_route.ro_nh->nh_ifp,  in rack_get_pacing_delay()
17763 								   &err, &rack->r_ctl.crte_prev_rate);  in rack_get_pacing_delay()
17769 						rack->rack_hdrw_pacing = 0;  in rack_get_pacing_delay()
17770 						rack->r_ctl.crte = NULL;  in rack_get_pacing_delay()
17774 						rack_set_pace_segments(rack->rc_tp, rack, __LINE__, &rate_wanted);  in rack_get_pacing_delay()
17776 					} else if (nrte != rack->r_ctl.crte) {  in rack_get_pacing_delay()
17777 						rack->r_ctl.crte = nrte;  in rack_get_pacing_delay()
17778 						rack->r_ctl.rc_pace_max_segs = tcp_get_pacing_burst_size_w_divisor(tp, rate_wanted,  in rack_get_pacing_delay()
17779 														   segsiz, pace_one, rack->r_ctl.crte,  in rack_get_pacing_delay()
17780 														   NULL, rack->r_ctl.pace_len_divisor);  in rack_get_pacing_delay()
17782 								     rate_wanted, rack->r_ctl.crte->rate, __LINE__,  in rack_get_pacing_delay()
17784 						rack->r_ctl.last_hw_bw_req = rate_wanted;  in rack_get_pacing_delay()
17788 					rack_set_pace_segments(rack->rc_tp, rack, __LINE__, &rate_wanted);  in rack_get_pacing_delay()
17790 							     rate_wanted, rack->r_ctl.crte->rate, __LINE__,  in rack_get_pacing_delay()
17792 					rack->r_ctl.last_hw_bw_req = rate_wanted;  in rack_get_pacing_delay()
17797 			rack_log_pacing_delay_calc(rack, minslot, slot, rack->r_ctl.crte->rate, bw_est, lentim,  in rack_get_pacing_delay()
17803 		    (rack->use_fixed_rate == 0) &&  in rack_get_pacing_delay()
17804 		    (rack->rack_hdrw_pacing == 0)) {  in rack_get_pacing_delay()
17815 			if (rack->rc_tp->t_srtt)  in rack_get_pacing_delay()
17816 				srtt = rack->rc_tp->t_srtt;  in rack_get_pacing_delay()
17829 	if (rack->r_ctl.crte && (rack->r_ctl.crte->rs_num_enobufs > 0)) {  in rack_get_pacing_delay()
17833 		 * of gas or we are mis-estimating the time  in rack_get_pacing_delay()
17839 		hw_boost_delay = rack->r_ctl.crte->time_between * rack_enobuf_hw_boost_mult;  in rack_get_pacing_delay()
17855 	if (tp->t_state < TCPS_ESTABLISHED) {  in rack_start_gp_measurement()
17862 	if (tp->t_state >= TCPS_FIN_WAIT_1) {  in rack_start_gp_measurement()
17869 		if (sbavail(&tptosocket(tp)->so_snd) <  in rack_start_gp_measurement()
17876 	tp->t_flags |= TF_GPUTINPROG;  in rack_start_gp_measurement()
17877 	rack->r_ctl.rc_gp_cumack_ts = 0;  in rack_start_gp_measurement()
17878 	rack->r_ctl.rc_gp_lowrtt = 0xffffffff;  in rack_start_gp_measurement()
17879 	rack->r_ctl.rc_gp_high_rwnd = rack->rc_tp->snd_wnd;  in rack_start_gp_measurement()
17880 	tp->gput_seq = startseq;  in rack_start_gp_measurement()
17881 	rack->app_limited_needs_set = 0;  in rack_start_gp_measurement()
17882 	if (rack->in_probe_rtt)  in rack_start_gp_measurement()
17883 		rack->measure_saw_probe_rtt = 1;  in rack_start_gp_measurement()
17884 	else if ((rack->measure_saw_probe_rtt) &&  in rack_start_gp_measurement()
17885 		 (SEQ_GEQ(tp->gput_seq, rack->r_ctl.rc_probertt_sndmax_atexit)))  in rack_start_gp_measurement()
17886 		rack->measure_saw_probe_rtt = 0;  in rack_start_gp_measurement()
17887 	if (rack->rc_gp_filled)  in rack_start_gp_measurement()
17888 		tp->gput_ts = rack->r_ctl.last_cumack_advance;  in rack_start_gp_measurement()
17893 		tp->gput_ts = tcp_get_usecs(&tv);  in rack_start_gp_measurement()
17894 		rack->r_ctl.rc_gp_output_ts = rack_to_usec_ts(&tv);  in rack_start_gp_measurement()
17900 	 * initial-windows worth of data to  in rack_start_gp_measurement()
17904 	if ((rack->rc_gp_filled == 0) && (rack->r_ctl.init_rate == 0)) {  in rack_start_gp_measurement()
17905 		rack->app_limited_needs_set = 1;  in rack_start_gp_measurement()
17906 		tp->gput_ack = startseq + max(rc_init_window(rack),  in rack_start_gp_measurement()
17909 					   tp->gput_seq,  in rack_start_gp_measurement()
17910 					   tp->gput_ack,  in rack_start_gp_measurement()
17912 					   tp->gput_ts,  in rack_start_gp_measurement()
17913 					   (((uint64_t)rack->r_ctl.rc_app_limited_cnt << 32) | (uint64_t)rack->r_ctl.rc_gp_output_ts),  in rack_start_gp_measurement()
17917 		rack_log_gpset(rack, tp->gput_ack, 0, 0, __LINE__, 1, NULL);  in rack_start_gp_measurement()
17926 		if (rack->r_ctl.rc_app_limited_cnt == 0) {  in rack_start_gp_measurement()
17929 			 * the tp->gput_ts is correctly set based on  in rack_start_gp_measurement()
17933 			my_rsm = tqhash_min(rack->r_ctl.tqh);  in rack_start_gp_measurement()
17935 			    (my_rsm->r_rtr_cnt != 1)) {  in rack_start_gp_measurement()
17940 			if (rack->r_ctl.rc_first_appl == NULL) {  in rack_start_gp_measurement()
17955 			rack->app_limited_needs_set = 1;  in rack_start_gp_measurement()
17959 			 * after that (after the app-limited).  in rack_start_gp_measurement()
17961 			my_rsm = tqhash_next(rack->r_ctl.tqh, rack->r_ctl.rc_first_appl);  in rack_start_gp_measurement()
17963 				if ((my_rsm->r_end - my_rsm->r_start) <= ctf_fixed_maxseg(tp))  in rack_start_gp_measurement()
17965 					my_rsm = tqhash_next(rack->r_ctl.tqh, my_rsm);  in rack_start_gp_measurement()
17968 					tp->gput_seq = my_rsm->r_start + ctf_fixed_maxseg(tp);  in rack_start_gp_measurement()
17973 			    (my_rsm->r_rtr_cnt != 1)) {  in rack_start_gp_measurement()
17976 				 * the last is the app-limited one.  in rack_start_gp_measurement()
17981 		tp->gput_seq = my_rsm->r_start;  in rack_start_gp_measurement()
17983 		if (my_rsm->r_flags & RACK_ACKED) {  in rack_start_gp_measurement()
17989 			tp->gput_ts = (uint32_t)my_rsm->r_ack_arrival;  in rack_start_gp_measurement()
17990 			rack->app_limited_needs_set = 0;  in rack_start_gp_measurement()
17995 			tp->gput_seq = my_rsm->r_end;  in rack_start_gp_measurement()
18000 			nrsm = tqhash_next(rack->r_ctl.tqh, my_rsm);  in rack_start_gp_measurement()
18011 		rack->r_ctl.rc_gp_output_ts = my_rsm->r_tim_lastsent[0];  in rack_start_gp_measurement()
18012 		tp->gput_ack = tp->gput_seq + rack_get_measure_window(tp, rack);  in rack_start_gp_measurement()
18013 		rack->r_ctl.rc_gp_cumack_ts = 0;  in rack_start_gp_measurement()
18014 		if ((rack->r_ctl.cleared_app_ack == 1) &&  in rack_start_gp_measurement()
18015 		    (SEQ_GEQ(rack->r_ctl.cleared_app_ack, tp->gput_seq))) {  in rack_start_gp_measurement()
18021 			rack->app_limited_needs_set = 1;  in rack_start_gp_measurement()
18022 			rack->r_ctl.cleared_app_ack = 0;  in rack_start_gp_measurement()
18025 					   tp->gput_seq,  in rack_start_gp_measurement()
18026 					   tp->gput_ack,  in rack_start_gp_measurement()
18028 					   tp->gput_ts,  in rack_start_gp_measurement()
18029 					   (((uint64_t)rack->r_ctl.rc_app_limited_cnt << 32) | (uint64_t)rack->r_ctl.rc_gp_output_ts),  in rack_start_gp_measurement()
18034 		rack_log_gpset(rack, tp->gput_ack, 0, 0, __LINE__, 1, NULL);  in rack_start_gp_measurement()
18041 	 * idle or if this is the first-send. Lets  in rack_start_gp_measurement()
18046 	rack->app_limited_needs_set = 1;  in rack_start_gp_measurement()
18047 	tp->gput_ack = startseq + rack_get_measure_window(tp, rack);  in rack_start_gp_measurement()
18048 	rack->r_ctl.rc_gp_cumack_ts = 0;  in rack_start_gp_measurement()
18050 	my_rsm = tqhash_find(rack->r_ctl.tqh, startseq);  in rack_start_gp_measurement()
18052 		rack->r_ctl.rc_gp_output_ts = my_rsm->r_tim_lastsent[0];  in rack_start_gp_measurement()
18053 		if (my_rsm->r_flags & RACK_ACKED) {  in rack_start_gp_measurement()
18058 			tp->gput_ts = (uint32_t)my_rsm->r_ack_arrival;  in rack_start_gp_measurement()
18059 			rack->app_limited_needs_set = 0;  in rack_start_gp_measurement()
18061 		if (SEQ_LT(my_rsm->r_start, tp->gput_seq)) {  in rack_start_gp_measurement()
18063 			tp->gput_seq = my_rsm->r_start;  in rack_start_gp_measurement()
18067 		 * TSNH unless we have some send-map limit,  in rack_start_gp_measurement()
18074 		rack->r_ctl.rc_gp_output_ts = rack_to_usec_ts(&tv);  in rack_start_gp_measurement()
18078 				   tp->gput_seq,  in rack_start_gp_measurement()
18079 				   tp->gput_ack,  in rack_start_gp_measurement()
18081 				   tp->gput_ts,  in rack_start_gp_measurement()
18082 				   (((uint64_t)rack->r_ctl.rc_app_limited_cnt << 32) | (uint64_t)rack->r_ctl.rc_gp_output_ts),  in rack_start_gp_measurement()
18084 	rack_log_gpset(rack, tp->gput_ack, 0, 0, __LINE__, 1, NULL);  in rack_start_gp_measurement()
18094 	if (tp->snd_wnd > cwnd_to_use)  in rack_what_can_we_send()
18097 		sendwin = tp->snd_wnd;  in rack_what_can_we_send()
18098 	if (ctf_outstanding(tp) >= tp->snd_wnd) {  in rack_what_can_we_send()
18099 		/* We never want to go over our peers rcv-window */  in rack_what_can_we_send()
18104 		flight = ctf_flight_size(tp, rack->r_ctl.rc_sacked);  in rack_what_can_we_send()
18109 			 * >= tp->snd_wnd).  in rack_what_can_we_send()
18113 		len = sendwin - flight;  in rack_what_can_we_send()
18114 		if ((len + ctf_outstanding(tp)) > tp->snd_wnd) {  in rack_what_can_we_send()
18116 			len = tp->snd_wnd - ctf_outstanding(tp);  in rack_what_can_we_send()
18123 			len = avail - sb_offset;  in rack_what_can_we_send()
18134 	if (rack_verbose_logging && tcp_bblogging_on(rack->rc_tp)) {  in rack_log_fsb()
18139 		log.u_bbr.inhpts = tcp_in_hpts(rack->rc_tp);  in rack_log_fsb()
18144 		log.u_bbr.flex5 = tp->rcv_numsacks;  in rack_log_fsb()
18145 		log.u_bbr.flex6 = rack->r_ctl.rc_agg_early;  in rack_log_fsb()
18147 		log.u_bbr.flex8 = rack->r_fsb_inited;  in rack_log_fsb()
18148 		log.u_bbr.applimited = rack->r_fast_output;  in rack_log_fsb()
18156 		log.u_bbr.inflight = ctf_flight_size(rack->rc_tp, rack->r_ctl.rc_sacked);  in rack_log_fsb()
18157 		tcp_log_event(tp, NULL, &so->so_rcv, &so->so_snd, TCP_LOG_FSB, 0,  in rack_log_fsb()
18187 	if (hw_tls && (m->m_flags & M_EXTPG))  in rack_fo_base_copym()
18188 		tls = m->m_epg_tls;  in rack_fo_base_copym()
18202 			if (m->m_flags & M_EXTPG)  in rack_fo_base_copym()
18203 				ntls = m->m_epg_tls;  in rack_fo_base_copym()
18219 		mlen = min(len, m->m_len - off);  in rack_fo_base_copym()
18229 			if (m->m_flags & M_EXTPG) {  in rack_fo_base_copym()
18250 				mlen = (seglimit - frags - 1) * fragsize;  in rack_fo_base_copym()
18257 			seglimit -= frags;  in rack_fo_base_copym()
18261 		n = m_get(M_NOWAIT, m->m_type);  in rack_fo_base_copym()
18265 		n->m_len = mlen;  in rack_fo_base_copym()
18267 		len_cp += n->m_len;  in rack_fo_base_copym()
18268 		if (m->m_flags & (M_EXT | M_EXTPG)) {  in rack_fo_base_copym()
18269 			n->m_data = m->m_data + off;  in rack_fo_base_copym()
18273 			    (u_int)n->m_len);  in rack_fo_base_copym()
18275 		len -= n->m_len;  in rack_fo_base_copym()
18277 		m = m->m_next;  in rack_fo_base_copym()
18278 		np = &n->m_next;  in rack_fo_base_copym()
18279 		if (len || (soff == smb->m_len)) {  in rack_fo_base_copym()
18291 		fsb->m = smb;  in rack_fo_base_copym()
18292 		fsb->off = soff;  in rack_fo_base_copym()
18300 			fsb->o_m_len = smb->m_len;  in rack_fo_base_copym()
18301 			fsb->o_t_len = M_TRAILINGROOM(smb);  in rack_fo_base_copym()
18311 			fsb->o_m_len = 0;  in rack_fo_base_copym()
18312 			fsb->o_t_len = 0;  in rack_fo_base_copym()
18334 	m = rack->r_ctl.fsb.m;  in rack_fo_m_copym()
18335 	if (M_TRAILINGROOM(m) != rack->r_ctl.fsb.o_t_len) {  in rack_fo_m_copym()
18342 		KASSERT((rack->r_ctl.fsb.o_t_len > M_TRAILINGROOM(m)),  in rack_fo_m_copym()
18347 			 rack->r_ctl.fsb.o_t_len,  in rack_fo_m_copym()
18348 			 rack->r_ctl.fsb.o_m_len,  in rack_fo_m_copym()
18349 			 m->m_len));  in rack_fo_m_copym()
18350 		rack->r_ctl.fsb.o_m_len += (rack->r_ctl.fsb.o_t_len - M_TRAILINGROOM(m));  in rack_fo_m_copym()
18351 		rack->r_ctl.fsb.o_t_len = M_TRAILINGROOM(m);  in rack_fo_m_copym()
18353 	if (m->m_len < rack->r_ctl.fsb.o_m_len) {  in rack_fo_m_copym()
18358 		KASSERT((rack->r_ctl.fsb.off >= (rack->r_ctl.fsb.o_m_len - m->m_len)),  in rack_fo_m_copym()
18360 			 m, m->m_len,  in rack_fo_m_copym()
18361 			 rack, rack->r_ctl.fsb.o_m_len,  in rack_fo_m_copym()
18362 			 rack->r_ctl.fsb.off));  in rack_fo_m_copym()
18364 		if (rack->r_ctl.fsb.off >= (rack->r_ctl.fsb.o_m_len- m->m_len))  in rack_fo_m_copym()
18365 			rack->r_ctl.fsb.off -= (rack->r_ctl.fsb.o_m_len - m->m_len);  in rack_fo_m_copym()
18367 			rack->r_ctl.fsb.off = 0;  in rack_fo_m_copym()
18368 		rack->r_ctl.fsb.o_m_len = m->m_len;  in rack_fo_m_copym()
18370 	} else if (m->m_len > rack->r_ctl.fsb.o_m_len) {  in rack_fo_m_copym()
18375 	soff = rack->r_ctl.fsb.off;  in rack_fo_m_copym()
18378 	KASSERT(soff < m->m_len, ("%s rack:%p len:%u m:%p m->m_len:%u < off?",  in rack_fo_m_copym()
18380 				 rack, *plen, m, m->m_len));  in rack_fo_m_copym()
18383 	*s_mb = rack->r_ctl.fsb.m;  in rack_fo_m_copym()
18385 			       &rack->r_ctl.fsb,  in rack_fo_m_copym()
18386 			       seglimit, segsize, rack->r_ctl.fsb.hw_tls);  in rack_fo_m_copym()
18400 	err = in_pcbquery_txrlevel(rack->rc_inp, &p_queue);  in rack_log_queue_level()
18401 	err = in_pcbquery_txrtlmt(rack->rc_inp,	&p_rate);  in rack_log_queue_level()
18404 	log.u_bbr.inhpts = tcp_in_hpts(rack->rc_tp);  in rack_log_queue_level()
18407 	log.u_bbr.flex4 = (uint32_t)rack->r_ctl.crte->using;  in rack_log_queue_level()
18408 	log.u_bbr.flex5 = (uint32_t)rack->r_ctl.crte->rs_num_enobufs;  in rack_log_queue_level()
18409 	log.u_bbr.flex6 = rack->r_ctl.crte->time_between;  in rack_log_queue_level()
18413 	log.u_bbr.delRate = rack->r_ctl.crte->rate;  in rack_log_queue_level()
18415 	log.u_bbr.inflight = ctf_flight_size(rack->rc_tp, rack->r_ctl.rc_sacked);  in rack_log_queue_level()
18431 	err = in_pcbquery_txrlevel(rack->rc_inp, &p_queue);  in rack_check_queue_level()
18437 	err = in_pcbquery_txrtlmt(rack->rc_inp, &p_rate);  in rack_check_queue_level()
18458 		lentime = (rack->r_ctl.rc_pace_max_segs / segsiz);  in rack_check_queue_level()
18463 		/* TSNH -- KASSERT? */  in rack_check_queue_level()
18469 		log.u_bbr.inhpts = tcp_in_hpts(rack->rc_tp);  in rack_check_queue_level()
18472 		log.u_bbr.flex4 = (uint32_t)rack->r_ctl.crte->using;  in rack_check_queue_level()
18473 		log.u_bbr.flex5 = (uint32_t)rack->r_ctl.crte->rs_num_enobufs;  in rack_check_queue_level()
18474 		log.u_bbr.flex6 = rack->r_ctl.crte->time_between;  in rack_check_queue_level()
18478 		log.u_bbr.delRate = rack->r_ctl.crte->rate;  in rack_check_queue_level()
18481 		log.u_bbr.inflight = ctf_flight_size(rack->rc_tp, rack->r_ctl.rc_sacked);  in rack_check_queue_level()
18524 	if (rack->r_is_v6) {  in rack_fast_rsm_output()
18525 		ip6 = (struct ip6_hdr *)rack->r_ctl.fsb.tcp_ip_hdr;  in rack_fast_rsm_output()
18530 		ip = (struct ip *)rack->r_ctl.fsb.tcp_ip_hdr;  in rack_fast_rsm_output()
18533 	if (tp->t_port && (V_tcp_udp_tunneling_port == 0)) {  in rack_fast_rsm_output()
18538 		rsm->r_flags |= RACK_TLP;  in rack_fast_rsm_output()
18541 		rsm->r_flags &= ~RACK_TLP;  in rack_fast_rsm_output()
18543 	startseq = rsm->r_start;  in rack_fast_rsm_output()
18544 	segsiz = min(ctf_fixed_maxseg(tp), rack->r_ctl.rc_pace_min_segs);  in rack_fast_rsm_output()
18545 	inp = rack->rc_inp;  in rack_fast_rsm_output()
18547 	flags = tcp_outflags[tp->t_state];  in rack_fast_rsm_output()
18551 	if (rsm->r_flags & RACK_HAS_FIN) {  in rack_fast_rsm_output()
18559 	if (tp->t_flags & TF_RCVD_TSTMP) {  in rack_fast_rsm_output()
18560 		to.to_tsval = ms_cts + tp->ts_offset;  in rack_fast_rsm_output()
18561 		to.to_tsecr = tp->ts_recent;  in rack_fast_rsm_output()
18565 	/* TCP-MD5 (RFC2385). */  in rack_fast_rsm_output()
18566 	if (tp->t_flags & TF_SIGNATURE)  in rack_fast_rsm_output()
18571 	udp = rack->r_ctl.fsb.udp;  in rack_fast_rsm_output()
18574 	if (rack->r_ctl.rc_pace_max_segs)  in rack_fast_rsm_output()
18575 		max_val = rack->r_ctl.rc_pace_max_segs;  in rack_fast_rsm_output()
18576 	else if (rack->rc_user_set_max_segs)  in rack_fast_rsm_output()
18577 		max_val = rack->rc_user_set_max_segs * segsiz;  in rack_fast_rsm_output()
18580 	if ((tp->t_flags & TF_TSO) &&  in rack_fast_rsm_output()
18583 	    (tp->t_port == 0))  in rack_fast_rsm_output()
18593 	m->m_data += max_linkhdr;  in rack_fast_rsm_output()
18594 	m->m_len = hdrlen;  in rack_fast_rsm_output()
18595 	th = rack->r_ctl.fsb.th;  in rack_fast_rsm_output()
18604 		if_hw_tsomax = tp->t_tsomax;  in rack_fast_rsm_output()
18605 		if_hw_tsomaxsegcount = tp->t_tsomaxsegcount;  in rack_fast_rsm_output()
18606 		if_hw_tsomaxsegsize = tp->t_tsomaxsegsize;  in rack_fast_rsm_output()
18613 			max_len = (if_hw_tsomax - hdrlen -  in rack_fast_rsm_output()
18635 	    (len <= MHLEN - hdrlen - max_linkhdr)) {  in rack_fast_rsm_output()
18638 	th->th_seq = htonl(rsm->r_start);  in rack_fast_rsm_output()
18639 	th->th_ack = htonl(tp->rcv_nxt);  in rack_fast_rsm_output()
18647 	if ((rsm->r_flags & RACK_HAD_PUSH) &&  in rack_fast_rsm_output()
18648 	    (len == (rsm->r_end - rsm->r_start)))  in rack_fast_rsm_output()
18650 	th->th_win = htons((u_short)(rack->r_ctl.fsb.recwin >> tp->rcv_scale));  in rack_fast_rsm_output()
18651 	if (th->th_win == 0) {  in rack_fast_rsm_output()
18652 		tp->t_sndzerowin++;  in rack_fast_rsm_output()
18653 		tp->t_flags |= TF_RXWIN0SENT;  in rack_fast_rsm_output()
18655 		tp->t_flags &= ~TF_RXWIN0SENT;  in rack_fast_rsm_output()
18656 	if (rsm->r_flags & RACK_TLP) {  in rack_fast_rsm_output()
18664 		tp->t_sndrexmitpack++;  in rack_fast_rsm_output()
18669 	stats_voi_update_abs_u32(tp->t_stats, VOI_TCP_RETXPB,  in rack_fast_rsm_output()
18672 	if (rsm->m == NULL)  in rack_fast_rsm_output()
18674 	if (rsm->m &&  in rack_fast_rsm_output()
18675 	    ((rsm->orig_m_len != rsm->m->m_len) ||  in rack_fast_rsm_output()
18676 	     (M_TRAILINGROOM(rsm->m) != rsm->orig_t_space))) {  in rack_fast_rsm_output()
18680 …m->m_next = rack_fo_base_copym(rsm->m, rsm->soff, &len, NULL, if_hw_tsomaxsegcount, if_hw_tsomaxse…  in rack_fast_rsm_output()
18690 	if ((m->m_next == NULL) || (len <= 0)){  in rack_fast_rsm_output()
18694 		if (rack->r_is_v6)  in rack_fast_rsm_output()
18695 			ulen = hdrlen + len - sizeof(struct ip6_hdr);  in rack_fast_rsm_output()
18697 			ulen = hdrlen + len - sizeof(struct ip);  in rack_fast_rsm_output()
18698 		udp->uh_ulen = htons(ulen);  in rack_fast_rsm_output()
18700 	m->m_pkthdr.rcvif = (struct ifnet *)0;  in rack_fast_rsm_output()
18701 	if (TCPS_HAVERCVDSYN(tp->t_state) &&  in rack_fast_rsm_output()
18702 	    (tp->t_flags2 & (TF2_ECN_PERMIT | TF2_ACE_PERMIT))) {  in rack_fast_rsm_output()
18704 		if ((tp->t_state == TCPS_SYN_RECEIVED) &&  in rack_fast_rsm_output()
18705 		    (tp->t_flags2 & TF2_ECN_SND_ECE))  in rack_fast_rsm_output()
18706 		    tp->t_flags2 &= ~TF2_ECN_SND_ECE;  in rack_fast_rsm_output()
18708 		if (rack->r_is_v6) {  in rack_fast_rsm_output()
18709 		    ip6->ip6_flow &= ~htonl(IPTOS_ECN_MASK << 20);  in rack_fast_rsm_output()
18710 		    ip6->ip6_flow |= htonl(ect << 20);  in rack_fast_rsm_output()
18715 		    ip->ip_tos &= ~IPTOS_ECN_MASK;  in rack_fast_rsm_output()
18716 		    ip->ip_tos |= ect;  in rack_fast_rsm_output()
18719 	if (rack->r_ctl.crte != NULL) {  in rack_fast_rsm_output()
18727 	m->m_pkthdr.len = hdrlen + len;	/* in6_cksum() need this */  in rack_fast_rsm_output()
18737 						       (u_char *)(th + 1) + (to.to_signature - opt)) != 0) {  in rack_fast_rsm_output()
18747 	if (rack->r_is_v6) {  in rack_fast_rsm_output()
18748 		if (tp->t_port) {  in rack_fast_rsm_output()
18749 			m->m_pkthdr.csum_flags = CSUM_UDP_IPV6;  in rack_fast_rsm_output()
18750 			m->m_pkthdr.csum_data = offsetof(struct udphdr, uh_sum);  in rack_fast_rsm_output()
18751 			udp->uh_sum = in6_cksum_pseudo(ip6, ulen, IPPROTO_UDP, 0);  in rack_fast_rsm_output()
18752 			th->th_sum = htons(0);  in rack_fast_rsm_output()
18755 			m->m_pkthdr.csum_flags = CSUM_TCP_IPV6;  in rack_fast_rsm_output()
18756 			m->m_pkthdr.csum_data = offsetof(struct tcphdr, th_sum);  in rack_fast_rsm_output()
18757 			th->th_sum = in6_cksum_pseudo(ip6,  in rack_fast_rsm_output()
18768 		if (tp->t_port) {  in rack_fast_rsm_output()
18769 			m->m_pkthdr.csum_flags = CSUM_UDP;  in rack_fast_rsm_output()
18770 			m->m_pkthdr.csum_data = offsetof(struct udphdr, uh_sum);  in rack_fast_rsm_output()
18771 			udp->uh_sum = in_pseudo(ip->ip_src.s_addr,  in rack_fast_rsm_output()
18772 						ip->ip_dst.s_addr, htons(ulen + IPPROTO_UDP));  in rack_fast_rsm_output()
18773 			th->th_sum = htons(0);  in rack_fast_rsm_output()
18776 			m->m_pkthdr.csum_flags = CSUM_TCP;  in rack_fast_rsm_output()
18777 			m->m_pkthdr.csum_data = offsetof(struct tcphdr, th_sum);  in rack_fast_rsm_output()
18778 			th->th_sum = in_pseudo(ip->ip_src.s_addr,  in rack_fast_rsm_output()
18779 					       ip->ip_dst.s_addr, htons(sizeof(struct tcphdr) +  in rack_fast_rsm_output()
18783 		KASSERT(ip->ip_v == IPVERSION,  in rack_fast_rsm_output()
18784 			("%s: IP version incorrect: %d", __func__, ip->ip_v));  in rack_fast_rsm_output()
18791 		 * via either fast-path).  in rack_fast_rsm_output()
18795 		m->m_pkthdr.csum_flags |= CSUM_TSO;  in rack_fast_rsm_output()
18796 		m->m_pkthdr.tso_segsz = segsiz;  in rack_fast_rsm_output()
18799 	if (rack->r_is_v6) {  in rack_fast_rsm_output()
18800 		ip6->ip6_hlim = rack->r_ctl.fsb.hoplimit;  in rack_fast_rsm_output()
18801 		ip6->ip6_plen = htons(m->m_pkthdr.len - sizeof(*ip6));  in rack_fast_rsm_output()
18802 		if (V_path_mtu_discovery && tp->t_maxseg > V_tcp_minmss)  in rack_fast_rsm_output()
18803 			tp->t_flags2 |= TF2_PLPMTU_PMTUD;  in rack_fast_rsm_output()
18805 			tp->t_flags2 &= ~TF2_PLPMTU_PMTUD;  in rack_fast_rsm_output()
18813 		ip->ip_len = htons(m->m_pkthdr.len);  in rack_fast_rsm_output()
18814 		ip->ip_ttl = rack->r_ctl.fsb.hoplimit;  in rack_fast_rsm_output()
18815 		if (V_path_mtu_discovery && tp->t_maxseg > V_tcp_minmss) {  in rack_fast_rsm_output()
18816 			tp->t_flags2 |= TF2_PLPMTU_PMTUD;  in rack_fast_rsm_output()
18817 			if (tp->t_port == 0 || len < V_tcp_minmss) {  in rack_fast_rsm_output()
18818 				ip->ip_off |= htons(IP_DF);  in rack_fast_rsm_output()
18821 			tp->t_flags2 &= ~TF2_PLPMTU_PMTUD;  in rack_fast_rsm_output()
18827 		rack->rc_gp_saw_rec = 1;  in rack_fast_rsm_output()
18830 		if (tp->snd_cwnd > tp->snd_ssthresh) {  in rack_fast_rsm_output()
18832 			rack->rc_gp_saw_ca = 1;  in rack_fast_rsm_output()
18835 			rack->rc_gp_saw_ss = 1;  in rack_fast_rsm_output()
18840 	memcpy(cpto, rack->r_ctl.fsb.tcp_ip_hdr, rack->r_ctl.fsb.tcp_ip_hdr_len);  in rack_fast_rsm_output()
18841 	th = (struct tcphdr *)(cpto + ((uint8_t *)rack->r_ctl.fsb.th - rack->r_ctl.fsb.tcp_ip_hdr));  in rack_fast_rsm_output()
18844 		th->th_off = (sizeof(struct tcphdr) + optlen) >> 2;  in rack_fast_rsm_output()
18846 		th->th_off = sizeof(struct tcphdr) >> 2;  in rack_fast_rsm_output()
18848 	if (tcp_bblogging_on(rack->rc_tp)) {  in rack_fast_rsm_output()
18851 		if (rsm->r_flags & RACK_RWND_COLLAPSED) {  in rack_fast_rsm_output()
18852 			rack_log_collapse(rack, rsm->r_start, rsm->r_end, 0, __LINE__, 5, rsm->r_flags, rsm);  in rack_fast_rsm_output()
18854 			counter_u64_add(rack_collapsed_win_rxt_bytes, (rsm->r_end - rsm->r_start));  in rack_fast_rsm_output()
18857 		log.u_bbr.inhpts = tcp_in_hpts(rack->rc_tp);  in rack_fast_rsm_output()
18858 		if (rack->rack_no_prr)  in rack_fast_rsm_output()
18861 			log.u_bbr.flex1 = rack->r_ctl.rc_prr_sndcnt;  in rack_fast_rsm_output()
18862 		log.u_bbr.flex2 = rack->r_ctl.rc_pace_min_segs;  in rack_fast_rsm_output()
18863 		log.u_bbr.flex3 = rack->r_ctl.rc_pace_max_segs;  in rack_fast_rsm_output()
18866 		log.u_bbr.flex6 = rack->r_ctl.rc_agg_early;  in rack_fast_rsm_output()
18867 		log.u_bbr.applimited = rack->r_ctl.rc_agg_delayed;  in rack_fast_rsm_output()
18869 		log.u_bbr.cur_del_rate = rack->r_ctl.gp_bw;  in rack_fast_rsm_output()
18876 		log.u_bbr.pkts_out = tp->t_maxseg;  in rack_fast_rsm_output()
18878 		log.u_bbr.inflight = ctf_flight_size(rack->rc_tp, rack->r_ctl.rc_sacked);  in rack_fast_rsm_output()
18879 		if (rsm && (rsm->r_rtr_cnt > 0)) {  in rack_fast_rsm_output()
18884 			log.u_bbr.flex5 = rsm->r_fas;  in rack_fast_rsm_output()
18885 			log.u_bbr.bbr_substate = rsm->r_bas;  in rack_fast_rsm_output()
18892 			log.u_bbr.bbr_substate = (uint8_t)((len + segsiz - 1)/segsiz);  in rack_fast_rsm_output()
18894 		log.u_bbr.lt_epoch = rack->r_ctl.cwnd_to_use;  in rack_fast_rsm_output()
18897 		log.u_bbr.delRate = rsm->r_flags;  in rack_fast_rsm_output()
18899 		log.u_bbr.delRate |= rack->r_must_retran;  in rack_fast_rsm_output()
18907 	if ((rack->r_ctl.crte != NULL) &&  in rack_fast_rsm_output()
18912 	if (rack->r_is_v6) {  in rack_fast_rsm_output()
18913 		error = ip6_output(m, inp->in6p_outputopts,  in rack_fast_rsm_output()
18914 				   &inp->inp_route6,  in rack_fast_rsm_output()
18922 				  &inp->inp_route,  in rack_fast_rsm_output()
18928 		lgb->tlb_errno = error;  in rack_fast_rsm_output()
18932 	tp->snd_nxt = tp->snd_max;  in rack_fast_rsm_output()
18935 	} else if (rack->rc_hw_nobuf && (ip_sendflag != IP_NO_SND_TAG_RL)) {  in rack_fast_rsm_output()
18936 		rack->rc_hw_nobuf = 0;  in rack_fast_rsm_output()
18937 		rack->r_ctl.rc_agg_delayed = 0;  in rack_fast_rsm_output()
18938 		rack->r_early = 0;  in rack_fast_rsm_output()
18939 		rack->r_late = 0;  in rack_fast_rsm_output()
18940 		rack->r_ctl.rc_agg_early = 0;  in rack_fast_rsm_output()
18942 	rack_log_output(tp, &to, len, rsm->r_start, flags, error, rack_to_usec_ts(tv),  in rack_fast_rsm_output()
18943 			rsm, RACK_SENT_FP, rsm->m, rsm->soff, rsm->r_hw_tls, segsiz);  in rack_fast_rsm_output()
18945 		rack->rc_tlp_in_progress = 1;  in rack_fast_rsm_output()
18946 		rack->r_ctl.rc_tlp_cnt_out++;  in rack_fast_rsm_output()
18950 		tcp_account_for_send(tp, len, 1, doing_tlp, rsm->r_hw_tls);  in rack_fast_rsm_output()
18952 			rack->rc_last_sent_tlp_past_cumack = 0;  in rack_fast_rsm_output()
18953 			rack->rc_last_sent_tlp_seq_valid = 1;  in rack_fast_rsm_output()
18954 			rack->r_ctl.last_sent_tlp_seq = rsm->r_start;  in rack_fast_rsm_output()
18955 			rack->r_ctl.last_sent_tlp_len = rsm->r_end - rsm->r_start;  in rack_fast_rsm_output()
18957 		if (rack->r_ctl.rc_prr_sndcnt >= len)  in rack_fast_rsm_output()
18958 			rack->r_ctl.rc_prr_sndcnt -= len;  in rack_fast_rsm_output()
18960 			rack->r_ctl.rc_prr_sndcnt = 0;  in rack_fast_rsm_output()
18962 	tp->t_flags &= ~(TF_ACKNOW | TF_DELACK);  in rack_fast_rsm_output()
18963 	rack->forced_ack = 0;	/* If we send something zap the FA flag */  in rack_fast_rsm_output()
18964 	if (IN_FASTRECOVERY(tp->t_flags) && rsm)  in rack_fast_rsm_output()
18965 		rack->r_ctl.retran_during_recovery += len;  in rack_fast_rsm_output()
18971 			counter_u64_add(rack_out_size[(TCP_MSS_ACCT_ATIMER-1)], 1);  in rack_fast_rsm_output()
18975 	if (tp->t_rtttime == 0) {  in rack_fast_rsm_output()
18976 		tp->t_rtttime = ticks;  in rack_fast_rsm_output()
18977 		tp->t_rtseq = startseq;  in rack_fast_rsm_output()
18982 		if (rack->r_ctl.crte != NULL) {  in rack_fast_rsm_output()
18983 			tcp_trace_point(rack->rc_tp, TCP_TP_HWENOBUF);  in rack_fast_rsm_output()
18984 			if (tcp_bblogging_on(rack->rc_tp))  in rack_fast_rsm_output()
18987 			tcp_trace_point(rack->rc_tp, TCP_TP_ENOBUF);  in rack_fast_rsm_output()
18988 		slot = ((1 + rack->rc_enobuf) * HPTS_USEC_IN_MSEC);  in rack_fast_rsm_output()
18989 		if (rack->rc_enobuf < 0x7f)  in rack_fast_rsm_output()
18990 			rack->rc_enobuf++;  in rack_fast_rsm_output()
18993 		if (rack->r_ctl.crte != NULL) {  in rack_fast_rsm_output()
18995 			tcp_rl_log_enobuf(rack->r_ctl.crte);  in rack_fast_rsm_output()
19004 	if (tp->t_flags2 & TF2_TCP_ACCOUNTING) {  in rack_fast_rsm_output()
19005 		tp->tcp_cnt_counters[SND_OUT_DATA] += cnt_thru;  in rack_fast_rsm_output()
19007 	if (tp->t_flags2 & TF2_TCP_ACCOUNTING) {  in rack_fast_rsm_output()
19008 		tp->tcp_proc_time[SND_OUT_DATA] += (crtsc - ts_val);  in rack_fast_rsm_output()
19010 	if (tp->t_flags2 & TF2_TCP_ACCOUNTING) {  in rack_fast_rsm_output()
19011 		tp->tcp_cnt_counters[CNT_OF_MSS_OUT] += ((len + segsiz - 1) / segsiz);  in rack_fast_rsm_output()
19019 	return (-1);  in rack_fast_rsm_output()
19030 	 * delay (eg. trans-continental/oceanic links).  Setting the  in rack_sndbuf_autoscale()
19052 	tp = rack->rc_tp;  in rack_sndbuf_autoscale()
19053 	so = rack->rc_inp->inp_socket;  in rack_sndbuf_autoscale()
19054 	sendwin = min(rack->r_ctl.cwnd_to_use, tp->snd_wnd);  in rack_sndbuf_autoscale()
19055 	if (V_tcp_do_autosndbuf && so->so_snd.sb_flags & SB_AUTOSIZE) {  in rack_sndbuf_autoscale()
19056 		if ((tp->snd_wnd / 4 * 5) >= so->so_snd.sb_hiwat &&  in rack_sndbuf_autoscale()
19057 		    sbused(&so->so_snd) >=  in rack_sndbuf_autoscale()
19058 		    (so->so_snd.sb_hiwat / 8 * 7) &&  in rack_sndbuf_autoscale()
19059 		    sbused(&so->so_snd) < V_tcp_autosndbuf_max &&  in rack_sndbuf_autoscale()
19060 		    sendwin >= (sbused(&so->so_snd) -  in rack_sndbuf_autoscale()
19061 		    (tp->snd_max - tp->snd_una))) {  in rack_sndbuf_autoscale()
19063 				scaleup = (rack_autosndbuf_inc * so->so_snd.sb_hiwat) / 100;  in rack_sndbuf_autoscale()
19068 			scaleup += so->so_snd.sb_hiwat;  in rack_sndbuf_autoscale()
19072 				so->so_snd.sb_flags &= ~SB_AUTOSIZE;  in rack_sndbuf_autoscale()
19087 	 * the max-burst). We have how much to send and all the info we  in rack_fast_output()
19117 	if (rack->r_is_v6) {  in rack_fast_output()
19118 		ip6 = (struct ip6_hdr *)rack->r_ctl.fsb.tcp_ip_hdr;  in rack_fast_output()
19124 		ip = (struct ip *)rack->r_ctl.fsb.tcp_ip_hdr;  in rack_fast_output()
19128 	if (tp->t_port && (V_tcp_udp_tunneling_port == 0)) {  in rack_fast_output()
19132 	rack->r_ctl.cwnd_to_use = tp->snd_cwnd;  in rack_fast_output()
19133 	startseq = tp->snd_max;  in rack_fast_output()
19134 	segsiz = min(ctf_fixed_maxseg(tp), rack->r_ctl.rc_pace_min_segs);  in rack_fast_output()
19135 	inp = rack->rc_inp;  in rack_fast_output()
19136 	len = rack->r_ctl.fsb.left_to_send;  in rack_fast_output()
19138 	flags = rack->r_ctl.fsb.tcp_flags;  in rack_fast_output()
19139 	if (tp->t_flags & TF_RCVD_TSTMP) {  in rack_fast_output()
19140 		to.to_tsval = ms_cts + tp->ts_offset;  in rack_fast_output()
19141 		to.to_tsecr = tp->ts_recent;  in rack_fast_output()
19145 	/* TCP-MD5 (RFC2385). */  in rack_fast_output()
19146 	if (tp->t_flags & TF_SIGNATURE)  in rack_fast_output()
19151 	udp = rack->r_ctl.fsb.udp;  in rack_fast_output()
19154 	if (rack->r_ctl.rc_pace_max_segs)  in rack_fast_output()
19155 		max_val = rack->r_ctl.rc_pace_max_segs;  in rack_fast_output()
19156 	else if (rack->rc_user_set_max_segs)  in rack_fast_output()
19157 		max_val = rack->rc_user_set_max_segs * segsiz;  in rack_fast_output()
19160 	if ((tp->t_flags & TF_TSO) &&  in rack_fast_output()
19163 	    (tp->t_port == 0))  in rack_fast_output()
19174 	m->m_data += max_linkhdr;  in rack_fast_output()
19175 	m->m_len = hdrlen;  in rack_fast_output()
19176 	th = rack->r_ctl.fsb.th;  in rack_fast_output()
19185 		if_hw_tsomax = tp->t_tsomax;  in rack_fast_output()
19186 		if_hw_tsomaxsegcount = tp->t_tsomaxsegcount;  in rack_fast_output()
19187 		if_hw_tsomaxsegsize = tp->t_tsomaxsegsize;  in rack_fast_output()
19194 			max_len = (if_hw_tsomax - hdrlen -  in rack_fast_output()
19216 	    (len <= MHLEN - hdrlen - max_linkhdr)) {  in rack_fast_output()
19219 	sb_offset = tp->snd_max - tp->snd_una;  in rack_fast_output()
19220 	th->th_seq = htonl(tp->snd_max);  in rack_fast_output()
19221 	th->th_ack = htonl(tp->rcv_nxt);  in rack_fast_output()
19222 	th->th_win = htons((u_short)(rack->r_ctl.fsb.recwin >> tp->rcv_scale));  in rack_fast_output()
19223 	if (th->th_win == 0) {  in rack_fast_output()
19224 		tp->t_sndzerowin++;  in rack_fast_output()
19225 		tp->t_flags |= TF_RXWIN0SENT;  in rack_fast_output()
19227 		tp->t_flags &= ~TF_RXWIN0SENT;  in rack_fast_output()
19228 	tp->snd_up = tp->snd_una;	/* drag it along, its deprecated */  in rack_fast_output()
19232 	stats_voi_update_abs_u64(tp->t_stats, VOI_TCP_TXPB,  in rack_fast_output()
19235 	if (rack->r_ctl.fsb.m == NULL)  in rack_fast_output()
19239 	m->m_next = rack_fo_m_copym(rack, &len, if_hw_tsomaxsegcount, if_hw_tsomaxsegsize,  in rack_fast_output()
19250 	if (rack->r_ctl.fsb.rfo_apply_push &&  in rack_fast_output()
19251 	    (len == rack->r_ctl.fsb.left_to_send)) {  in rack_fast_output()
19255 	if ((m->m_next == NULL) || (len <= 0)){  in rack_fast_output()
19259 		if (rack->r_is_v6)  in rack_fast_output()
19260 			ulen = hdrlen + len - sizeof(struct ip6_hdr);  in rack_fast_output()
19262 			ulen = hdrlen + len - sizeof(struct ip);  in rack_fast_output()
19263 		udp->uh_ulen = htons(ulen);  in rack_fast_output()
19265 	m->m_pkthdr.rcvif = (struct ifnet *)0;  in rack_fast_output()
19266 	if (TCPS_HAVERCVDSYN(tp->t_state) &&  in rack_fast_output()
19267 	    (tp->t_flags2 & (TF2_ECN_PERMIT | TF2_ACE_PERMIT))) {  in rack_fast_output()
19269 		if ((tp->t_state == TCPS_SYN_RECEIVED) &&  in rack_fast_output()
19270 		    (tp->t_flags2 & TF2_ECN_SND_ECE))  in rack_fast_output()
19271 			tp->t_flags2 &= ~TF2_ECN_SND_ECE;  in rack_fast_output()
19273 		if (rack->r_is_v6) {  in rack_fast_output()
19274 			ip6->ip6_flow &= ~htonl(IPTOS_ECN_MASK << 20);  in rack_fast_output()
19275 			ip6->ip6_flow |= htonl(ect << 20);  in rack_fast_output()
19281 			ip->ip_tos &= ~IPTOS_ECN_MASK;  in rack_fast_output()
19282 			ip->ip_tos |= ect;  in rack_fast_output()
19287 	m->m_pkthdr.len = hdrlen + len;	/* in6_cksum() need this */  in rack_fast_output()
19297 						       (u_char *)(th + 1) + (to.to_signature - opt)) != 0) {  in rack_fast_output()
19307 	if (rack->r_is_v6) {  in rack_fast_output()
19308 		if (tp->t_port) {  in rack_fast_output()
19309 			m->m_pkthdr.csum_flags = CSUM_UDP_IPV6;  in rack_fast_output()
19310 			m->m_pkthdr.csum_data = offsetof(struct udphdr, uh_sum);  in rack_fast_output()
19311 			udp->uh_sum = in6_cksum_pseudo(ip6, ulen, IPPROTO_UDP, 0);  in rack_fast_output()
19312 			th->th_sum = htons(0);  in rack_fast_output()
19315 			m->m_pkthdr.csum_flags = CSUM_TCP_IPV6;  in rack_fast_output()
19316 			m->m_pkthdr.csum_data = offsetof(struct tcphdr, th_sum);  in rack_fast_output()
19317 			th->th_sum = in6_cksum_pseudo(ip6,  in rack_fast_output()
19328 		if (tp->t_port) {  in rack_fast_output()
19329 			m->m_pkthdr.csum_flags = CSUM_UDP;  in rack_fast_output()
19330 			m->m_pkthdr.csum_data = offsetof(struct udphdr, uh_sum);  in rack_fast_output()
19331 			udp->uh_sum = in_pseudo(ip->ip_src.s_addr,  in rack_fast_output()
19332 						ip->ip_dst.s_addr, htons(ulen + IPPROTO_UDP));  in rack_fast_output()
19333 			th->th_sum = htons(0);  in rack_fast_output()
19336 			m->m_pkthdr.csum_flags = CSUM_TCP;  in rack_fast_output()
19337 			m->m_pkthdr.csum_data = offsetof(struct tcphdr, th_sum);  in rack_fast_output()
19338 			th->th_sum = in_pseudo(ip->ip_src.s_addr,  in rack_fast_output()
19339 					       ip->ip_dst.s_addr, htons(sizeof(struct tcphdr) +  in rack_fast_output()
19343 		KASSERT(ip->ip_v == IPVERSION,  in rack_fast_output()
19344 			("%s: IP version incorrect: %d", __func__, ip->ip_v));  in rack_fast_output()
19351 		 * via either fast-path).  in rack_fast_output()
19355 		m->m_pkthdr.csum_flags |= CSUM_TSO;  in rack_fast_output()
19356 		m->m_pkthdr.tso_segsz = segsiz;  in rack_fast_output()
19359 	if (rack->r_is_v6) {  in rack_fast_output()
19360 		ip6->ip6_hlim = rack->r_ctl.fsb.hoplimit;  in rack_fast_output()
19361 		ip6->ip6_plen = htons(m->m_pkthdr.len - sizeof(*ip6));  in rack_fast_output()
19362 		if (V_path_mtu_discovery && tp->t_maxseg > V_tcp_minmss)  in rack_fast_output()
19363 			tp->t_flags2 |= TF2_PLPMTU_PMTUD;  in rack_fast_output()
19365 			tp->t_flags2 &= ~TF2_PLPMTU_PMTUD;  in rack_fast_output()
19373 		ip->ip_len = htons(m->m_pkthdr.len);  in rack_fast_output()
19374 		ip->ip_ttl = rack->r_ctl.fsb.hoplimit;  in rack_fast_output()
19375 		if (V_path_mtu_discovery && tp->t_maxseg > V_tcp_minmss) {  in rack_fast_output()
19376 			tp->t_flags2 |= TF2_PLPMTU_PMTUD;  in rack_fast_output()
19377 			if (tp->t_port == 0 || len < V_tcp_minmss) {  in rack_fast_output()
19378 				ip->ip_off |= htons(IP_DF);  in rack_fast_output()
19381 			tp->t_flags2 &= ~TF2_PLPMTU_PMTUD;  in rack_fast_output()
19385 	if (tp->snd_cwnd > tp->snd_ssthresh) {  in rack_fast_output()
19387 		rack->rc_gp_saw_ca = 1;  in rack_fast_output()
19390 		rack->rc_gp_saw_ss = 1;  in rack_fast_output()
19394 	memcpy(cpto, rack->r_ctl.fsb.tcp_ip_hdr, rack->r_ctl.fsb.tcp_ip_hdr_len);  in rack_fast_output()
19395 	th = (struct tcphdr *)(cpto + ((uint8_t *)rack->r_ctl.fsb.th - rack->r_ctl.fsb.tcp_ip_hdr));  in rack_fast_output()
19398 		th->th_off = (sizeof(struct tcphdr) + optlen) >> 2;  in rack_fast_output()
19400 		th->th_off = sizeof(struct tcphdr) >> 2;  in rack_fast_output()
19402 	if ((rack->r_ctl.crte != NULL) &&  in rack_fast_output()
19406 	if (tcp_bblogging_on(rack->rc_tp)) {  in rack_fast_output()
19410 		log.u_bbr.inhpts = tcp_in_hpts(rack->rc_tp);  in rack_fast_output()
19411 		if (rack->rack_no_prr)  in rack_fast_output()
19414 			log.u_bbr.flex1 = rack->r_ctl.rc_prr_sndcnt;  in rack_fast_output()
19415 		log.u_bbr.flex2 = rack->r_ctl.rc_pace_min_segs;  in rack_fast_output()
19416 		log.u_bbr.flex3 = rack->r_ctl.rc_pace_max_segs;  in rack_fast_output()
19419 		log.u_bbr.flex6 = rack->r_ctl.rc_agg_early;  in rack_fast_output()
19420 		log.u_bbr.applimited = rack->r_ctl.rc_agg_delayed;  in rack_fast_output()
19422 		log.u_bbr.cur_del_rate = rack->r_ctl.gp_bw;  in rack_fast_output()
19426 		log.u_bbr.pkts_out = tp->t_maxseg;  in rack_fast_output()
19428 		log.u_bbr.inflight = ctf_flight_size(rack->rc_tp, rack->r_ctl.rc_sacked);  in rack_fast_output()
19430 		log.u_bbr.lt_epoch = rack->r_ctl.cwnd_to_use;  in rack_fast_output()
19433 		log.u_bbr.delRate = rack->r_must_retran;  in rack_fast_output()
19438 		log.u_bbr.bbr_substate = (uint8_t)((len + segsiz - 1)/segsiz);  in rack_fast_output()
19444 	if (rack->r_is_v6) {  in rack_fast_output()
19445 		error = ip6_output(m, inp->in6p_outputopts,  in rack_fast_output()
19446 				   &inp->inp_route6,  in rack_fast_output()
19456 				  &inp->inp_route,  in rack_fast_output()
19461 		lgb->tlb_errno = error;  in rack_fast_output()
19468 	} else if (rack->rc_hw_nobuf) {  in rack_fast_output()
19469 		rack->rc_hw_nobuf = 0;  in rack_fast_output()
19470 		rack->r_ctl.rc_agg_delayed = 0;  in rack_fast_output()
19471 		rack->r_early = 0;  in rack_fast_output()
19472 		rack->r_late = 0;  in rack_fast_output()
19473 		rack->r_ctl.rc_agg_early = 0;  in rack_fast_output()
19475 	if ((error == 0) && (rack->lt_bw_up == 0)) {  in rack_fast_output()
19477 		rack->r_ctl.lt_timemark = tcp_tv_to_lusectick(tv);  in rack_fast_output()
19478 		rack->r_ctl.lt_seq = tp->snd_una;  in rack_fast_output()
19479 		rack->lt_bw_up = 1;  in rack_fast_output()
19481 		   (((tp->snd_max + len) - rack->r_ctl.lt_seq) > 0x7fffffff)) {  in rack_fast_output()
19489 		rack->r_ctl.lt_bw_bytes += (tp->snd_una - rack->r_ctl.lt_seq);  in rack_fast_output()
19490 		rack->r_ctl.lt_seq = tp->snd_una;  in rack_fast_output()
19492 		if (tmark > rack->r_ctl.lt_timemark) {  in rack_fast_output()
19493 			rack->r_ctl.lt_bw_time += (tmark - rack->r_ctl.lt_timemark);  in rack_fast_output()
19494 			rack->r_ctl.lt_timemark = tmark;  in rack_fast_output()
19497 	rack_log_output(tp, &to, len, tp->snd_max, flags, error, rack_to_usec_ts(tv),  in rack_fast_output()
19498 			NULL, add_flag, s_mb, s_soff, rack->r_ctl.fsb.hw_tls, segsiz);  in rack_fast_output()
19500 	if (tp->snd_una == tp->snd_max) {  in rack_fast_output()
19501 		rack->r_ctl.rc_tlp_rxt_last_time = cts;  in rack_fast_output()
19503 		tp->t_acktime = ticks;  in rack_fast_output()
19506 	tcp_account_for_send(tp, len, 0, 0, rack->r_ctl.fsb.hw_tls);  in rack_fast_output()
19508 	rack->forced_ack = 0;	/* If we send something zap the FA flag */  in rack_fast_output()
19510 	if ((tp->t_flags & TF_GPUTINPROG) == 0)  in rack_fast_output()
19511 		rack_start_gp_measurement(tp, rack, tp->snd_max, sb_offset);  in rack_fast_output()
19512 	tp->snd_max += len;  in rack_fast_output()
19513 	tp->snd_nxt = tp->snd_max;  in rack_fast_output()
19514 	if (rack->rc_new_rnd_needed) {  in rack_fast_output()
19515 		rack_new_round_starts(tp, rack, tp->snd_max);  in rack_fast_output()
19522 			counter_u64_add(rack_out_size[(TCP_MSS_ACCT_ATIMER-1)], 1);  in rack_fast_output()
19526 	if (len <= rack->r_ctl.fsb.left_to_send)  in rack_fast_output()
19527 		rack->r_ctl.fsb.left_to_send -= len;  in rack_fast_output()
19529 		rack->r_ctl.fsb.left_to_send = 0;  in rack_fast_output()
19530 	if (rack->r_ctl.fsb.left_to_send < segsiz) {  in rack_fast_output()
19531 		rack->r_fast_output = 0;  in rack_fast_output()
19532 		rack->r_ctl.fsb.left_to_send = 0;  in rack_fast_output()
19534 		SOCK_SENDBUF_LOCK(rack->rc_inp->inp_socket);  in rack_fast_output()
19536 		SOCK_SENDBUF_UNLOCK(rack->rc_inp->inp_socket);  in rack_fast_output()
19538 	if (tp->t_rtttime == 0) {  in rack_fast_output()
19539 		tp->t_rtttime = ticks;  in rack_fast_output()
19540 		tp->t_rtseq = startseq;  in rack_fast_output()
19543 	if ((rack->r_ctl.fsb.left_to_send >= segsiz) &&  in rack_fast_output()
19546 		max_val -= len;  in rack_fast_output()
19548 		th = rack->r_ctl.fsb.th;  in rack_fast_output()
19554 	tp->t_flags &= ~(TF_ACKNOW | TF_DELACK);  in rack_fast_output()
19560 	if (tp->t_flags2 & TF2_TCP_ACCOUNTING) {  in rack_fast_output()
19561 		tp->tcp_cnt_counters[SND_OUT_DATA] += cnt_thru;  in rack_fast_output()
19563 	if (tp->t_flags2 & TF2_TCP_ACCOUNTING) {  in rack_fast_output()
19564 		tp->tcp_proc_time[SND_OUT_DATA] += (crtsc - ts_val);  in rack_fast_output()
19566 	if (tp->t_flags2 & TF2_TCP_ACCOUNTING) {  in rack_fast_output()
19567 		tp->tcp_cnt_counters[CNT_OF_MSS_OUT] += ((tot_len + segsiz - 1) / segsiz);  in rack_fast_output()
19575 	rack->r_fast_output = 0;  in rack_fast_output()
19576 	return (-1);  in rack_fast_output()
19586 	rack->r_fast_output = 1;  in rack_setup_fast_output()
19587 	rack->r_ctl.fsb.m = sbsndmbuf(sb, (tp->snd_max - tp->snd_una), &rack->r_ctl.fsb.off);  in rack_setup_fast_output()
19588 	rack->r_ctl.fsb.o_m_len = rack->r_ctl.fsb.m->m_len;  in rack_setup_fast_output()
19589 	rack->r_ctl.fsb.o_t_len = M_TRAILINGROOM(rack->r_ctl.fsb.m);  in rack_setup_fast_output()
19590 	rack->r_ctl.fsb.tcp_flags = flags;  in rack_setup_fast_output()
19591 	rack->r_ctl.fsb.left_to_send = orig_len - len;  in rack_setup_fast_output()
19592 	if (rack->r_ctl.fsb.left_to_send < pace_max_seg) {  in rack_setup_fast_output()
19594 		rack->r_fast_output = 0;  in rack_setup_fast_output()
19598 		rack->r_ctl.fsb.left_to_send = rounddown(rack->r_ctl.fsb.left_to_send, pace_max_seg);  in rack_setup_fast_output()
19601 		rack->r_ctl.fsb.hw_tls = 1;  in rack_setup_fast_output()
19603 		rack->r_ctl.fsb.hw_tls = 0;  in rack_setup_fast_output()
19604 	KASSERT((rack->r_ctl.fsb.left_to_send <= (sbavail(sb) - (tp->snd_max - tp->snd_una))),  in rack_setup_fast_output()
19606 		 rack, rack->r_ctl.fsb.left_to_send, sbavail(sb),  in rack_setup_fast_output()
19607 		 (tp->snd_max - tp->snd_una)));  in rack_setup_fast_output()
19608 	if (rack->r_ctl.fsb.left_to_send < segsiz)  in rack_setup_fast_output()
19609 		rack->r_fast_output = 0;  in rack_setup_fast_output()
19611 		if (rack->r_ctl.fsb.left_to_send == (sbavail(sb) - (tp->snd_max - tp->snd_una)))  in rack_setup_fast_output()
19612 			rack->r_ctl.fsb.rfo_apply_push = 1;  in rack_setup_fast_output()
19614 			rack->r_ctl.fsb.rfo_apply_push = 0;  in rack_setup_fast_output()
19625 	maxlen = (uint32_t)((rack->r_ctl.gp_bw * min_time) / (uint64_t)HPTS_USEC_IN_SEC);  in rack_get_hpts_pacing_min_for_bw()
19637 	rsm = tqhash_find(rack->r_ctl.tqh, rack->r_ctl.last_collapse_point);  in rack_check_collapsed()
19638 	if ((rsm == NULL) || ((rsm->r_flags & RACK_RWND_COLLAPSED) == 0)) {  in rack_check_collapsed()
19640 		rack->r_collapse_point_valid = 0;  in rack_check_collapsed()
19644 	if (rsm->r_end > (rack->rc_tp->snd_una + rack->rc_tp->snd_wnd)) {  in rack_check_collapsed()
19651 	if (rsm->r_flags & RACK_ACKED) {  in rack_check_collapsed()
19656 		rack->r_ctl.last_collapse_point = rsm->r_end;  in rack_check_collapsed()
19658 		if (SEQ_GEQ(rack->r_ctl.last_collapse_point,  in rack_check_collapsed()
19659 			    rack->r_ctl.high_collapse_point)) {  in rack_check_collapsed()
19660 			rack->r_collapse_point_valid = 0;  in rack_check_collapsed()
19666 	thresh = rack_calc_thresh_rack(rack, rack_grab_rtt(rack->rc_tp, rack), cts, __LINE__, 1);  in rack_check_collapsed()
19667 	if ((cts - ((uint32_t)rsm->r_tim_lastsent[(rsm->r_rtr_cnt-1)])) > thresh) {  in rack_check_collapsed()
19668 		rack_log_collapse(rack, rsm->r_start,  in rack_check_collapsed()
19669 				  (cts - ((uint32_t)rsm->r_tim_lastsent[(rsm->r_rtr_cnt-1)])),  in rack_check_collapsed()
19670 				  thresh, __LINE__, 6, rsm->r_flags, rsm);  in rack_check_collapsed()
19674 	rack_log_collapse(rack, rsm->r_start,  in rack_check_collapsed()
19675 			  (cts - ((uint32_t)rsm->r_tim_lastsent[(rsm->r_rtr_cnt-1)])),  in rack_check_collapsed()
19676 			  thresh, __LINE__, 7, rsm->r_flags, rsm);  in rack_check_collapsed()
19683 	if ((rack->full_size_rxt == 0) &&  in rack_validate_sizes()
19684 	    (rack->shape_rxt_to_pacing_min == 0) &&  in rack_validate_sizes()
19687 	} else if (rack->shape_rxt_to_pacing_min &&  in rack_validate_sizes()
19688 		 rack->gp_ready) {  in rack_validate_sizes()
19777 	rack = (struct tcp_rack *)tp->t_fb_ptr;  in rack_output()
19782 	hpts_calling = !!(tp->t_flags2 & TF2_HPTS_CALLS);  in rack_output()
19783 	tp->t_flags2 &= ~TF2_HPTS_CALLS;  in rack_output()
19785 	if (tp->t_flags & TF_TOE) {  in rack_output()
19792 	if (rack->rack_deferred_inited == 0) {  in rack_output()
19805 	if ((tp->t_flags & TF_FASTOPEN) &&  in rack_output()
19806 	    (tp->t_state == TCPS_SYN_RECEIVED) &&  in rack_output()
19807 	    SEQ_GT(tp->snd_max, tp->snd_una) &&    /* initial SYN|ACK sent */  in rack_output()
19808 	    (rack->r_ctl.rc_resend == NULL)) {         /* not a retransmit */  in rack_output()
19815 	if (rack->r_state) {  in rack_output()
19817 		isipv6 = rack->r_is_v6;  in rack_output()
19819 		isipv6 = (rack->rc_inp->inp_vflag & INP_IPV6) != 0;  in rack_output()
19825 	if (((rack->r_ctl.rc_hpts_flags & PACE_PKT_OUTPUT) == 0) &&  in rack_output()
19826 	    tcp_in_hpts(rack->rc_tp)) {  in rack_output()
19834 	if ((rack->r_ctl.rc_hpts_flags & PACE_PKT_OUTPUT) &&  in rack_output()
19835 	    TSTMP_GEQ(cts, rack->r_ctl.rc_last_output_to)) {  in rack_output()
19837 		delayed = cts - rack->r_ctl.rc_last_output_to;  in rack_output()
19842 	if (rack->r_ctl.rc_hpts_flags & PACE_TMR_MASK) {  in rack_output()
19859 	if (rack->rc_in_persist) {  in rack_output()
19860 		if (tcp_in_hpts(rack->rc_tp) == 0) {  in rack_output()
19869 	if ((rack->rc_ack_required == 1) &&  in rack_output()
19870 	    (rack->r_timer_override == 0)){  in rack_output()
19872 		if (tcp_in_hpts(rack->rc_tp) == 0) {  in rack_output()
19881 	if ((rack->r_timer_override) ||  in rack_output()
19882 	    (rack->rc_ack_can_sendout_data) ||  in rack_output()
19884 	    (tp->t_state < TCPS_ESTABLISHED)) {  in rack_output()
19885 		rack->rc_ack_can_sendout_data = 0;  in rack_output()
19886 		if (tcp_in_hpts(rack->rc_tp))  in rack_output()
19887 			tcp_hpts_remove(rack->rc_tp);  in rack_output()
19888 	} else if (tcp_in_hpts(rack->rc_tp)) {  in rack_output()
19895 		if (tp->t_flags2 & TF2_TCP_ACCOUNTING) {  in rack_output()
19896 			tp->tcp_proc_time[SND_BLOCKED] += (crtsc - ts_val);  in rack_output()
19898 		if (tp->t_flags2 & TF2_TCP_ACCOUNTING) {  in rack_output()
19899 			tp->tcp_cnt_counters[SND_BLOCKED]++;  in rack_output()
19907 	if ((rack->r_ctl.rc_hpts_flags & PACE_PKT_OUTPUT) &&  in rack_output()
19908 	    TSTMP_GT(rack->r_ctl.rc_last_output_to, cts)) {  in rack_output()
19909 		early = rack->r_ctl.rc_last_output_to - cts;  in rack_output()
19912 	if (delayed && (rack->rc_always_pace == 1)) {  in rack_output()
19913 		rack->r_ctl.rc_agg_delayed += delayed;  in rack_output()
19914 		rack->r_late = 1;  in rack_output()
19915 	} else if (early && (rack->rc_always_pace == 1)) {  in rack_output()
19916 		rack->r_ctl.rc_agg_early += early;  in rack_output()
19917 		rack->r_early = 1;  in rack_output()
19918 	} else if (rack->rc_always_pace == 0) {  in rack_output()
19919 		/* Non-paced we are not late */  in rack_output()
19920 		rack->r_ctl.rc_agg_delayed = rack->r_ctl.rc_agg_early = 0;  in rack_output()
19921 		rack->r_early = rack->r_late = 0;  in rack_output()
19924 	rack->r_ctl.rc_hpts_flags &= ~PACE_PKT_OUTPUT;  in rack_output()
19925 	rack->r_wanted_output = 0;  in rack_output()
19926 	rack->r_timer_override = 0;  in rack_output()
19927 	if ((tp->t_state != rack->r_state) &&  in rack_output()
19928 	    TCPS_HAVEESTABLISHED(tp->t_state)) {  in rack_output()
19931 	if ((rack->r_fast_output) &&  in rack_output()
19933 	    (tp->rcv_numsacks == 0)) {  in rack_output()
19941 			inp = rack->rc_inp;  in rack_output()
19942 			so = inp->inp_socket;  in rack_output()
19943 			sb = &so->so_snd;  in rack_output()
19947 	inp = rack->rc_inp;  in rack_output()
19953 	if ((tp->t_flags & TF_FASTOPEN) &&  in rack_output()
19954 	    ((tp->t_state == TCPS_SYN_RECEIVED) ||  in rack_output()
19955 	     (tp->t_state == TCPS_SYN_SENT)) &&  in rack_output()
19956 	    SEQ_GT(tp->snd_max, tp->snd_una) && /* initial SYN or SYN|ACK sent */  in rack_output()
19957 	    (tp->t_rxtshift == 0)) {              /* not a retransmit */  in rack_output()
19958 		cwnd_to_use = rack->r_ctl.cwnd_to_use = tp->snd_cwnd;  in rack_output()
19959 		so = inp->inp_socket;  in rack_output()
19960 		sb = &so->so_snd;  in rack_output()
19969 	idle = (tp->t_flags & TF_LASTIDLE) || (tp->snd_max == tp->snd_una);  in rack_output()
19970 	if (tp->t_idle_reduce) {  in rack_output()
19971 		if (idle && (TICKS_2_USEC(ticks - tp->t_rcvtime) >= tp->t_rxtcur))  in rack_output()
19974 	tp->t_flags &= ~TF_LASTIDLE;  in rack_output()
19976 		if (tp->t_flags & TF_MORETOCOME) {  in rack_output()
19977 			tp->t_flags |= TF_LASTIDLE;  in rack_output()
19981 	if ((tp->snd_una == tp->snd_max) &&  in rack_output()
19982 	    rack->r_ctl.rc_went_idle_time &&  in rack_output()
19983 	    (cts > rack->r_ctl.rc_went_idle_time)) {  in rack_output()
19984 		tot_idle = (cts - rack->r_ctl.rc_went_idle_time);  in rack_output()
19987 			if (rack->in_probe_rtt == 0) {  in rack_output()
19988 				rack->r_ctl.rc_lower_rtt_us_cts = cts;  in rack_output()
19989 				rack->r_ctl.rc_time_probertt_entered = rack->r_ctl.rc_lower_rtt_us_cts;  in rack_output()
19990 				rack->r_ctl.rc_time_probertt_starts = rack->r_ctl.rc_lower_rtt_us_cts;  in rack_output()
19991 				rack->r_ctl.rc_time_of_last_probertt = rack->r_ctl.rc_lower_rtt_us_cts;  in rack_output()
19998 	    (rack->r_ctl.fsb.tcp_ip_hdr) &&  in rack_output()
19999 	    (rack->r_fsb_inited == 0) &&  in rack_output()
20000 	    (rack->r_state != TCPS_CLOSED))  in rack_output()
20001 		rack_init_fsb_block(tp, rack, tcp_outflags[tp->t_state]);  in rack_output()
20002 	if (rack->rc_sendvars_notset == 1) {  in rack_output()
20003 		rack->rc_sendvars_notset = 0;  in rack_output()
20005 		 * Make sure any TCP timers (keep-alive) is not running.  in rack_output()
20009 	if ((rack->rack_no_prr == 1) &&  in rack_output()
20010 	    (rack->rc_always_pace == 0)) {  in rack_output()
20013 		 * no-pacing enabled and prr is turned off that  in rack_output()
20021 		rack->rack_no_prr = 0;  in rack_output()
20023 	if ((rack->pcm_enabled == 1) &&  in rack_output()
20024 	    (rack->pcm_needed == 0) &&  in rack_output()
20032 		if (tp->t_srtt)  in rack_output()
20033 			rtts_idle = tot_idle / tp->t_srtt;  in rack_output()
20036 		rnds = rack->r_ctl.current_round - rack->r_ctl.last_pcm_round;  in rack_output()
20037 		rack->r_ctl.pcm_idle_rounds += rtts_idle;  in rack_output()
20038 		if ((rnds + rack->r_ctl.pcm_idle_rounds)  >= rack_pcm_every_n_rounds) {  in rack_output()
20039 			rack->pcm_needed = 1;  in rack_output()
20040 			rack_log_pcm(rack, 8, rack->r_ctl.last_pcm_round, rtts_idle, rack->r_ctl.current_round );  in rack_output()
20049 	segsiz = min(ctf_fixed_maxseg(tp), rack->r_ctl.rc_pace_min_segs);  in rack_output()
20051 	if (rack->r_ctl.rc_pace_max_segs == 0)  in rack_output()
20052 		pace_max_seg = rack->rc_user_set_max_segs * segsiz;  in rack_output()
20054 		pace_max_seg = rack->r_ctl.rc_pace_max_segs;  in rack_output()
20055 	if (TCPS_HAVEESTABLISHED(tp->t_state) &&  in rack_output()
20056 	    (rack->r_ctl.pcm_max_seg == 0)) {  in rack_output()
20062 		rack->r_ctl.pcm_max_seg = rc_init_window(rack);  in rack_output()
20063 		if (rack->r_ctl.pcm_max_seg < (ctf_fixed_maxseg(tp) * 10)) {  in rack_output()
20067 			rack->r_ctl.pcm_max_seg = ctf_fixed_maxseg(tp) * 10;  in rack_output()
20070 	if ((rack->r_ctl.pcm_max_seg != 0)  && (rack->pcm_needed == 1)) {  in rack_output()
20073 		if (tp->snd_wnd > ctf_outstanding(tp))  in rack_output()
20074 			rw_avail = tp->snd_wnd - ctf_outstanding(tp);  in rack_output()
20077 		if (tp->snd_cwnd > ctf_flight_size(rack->rc_tp, rack->r_ctl.rc_sacked))  in rack_output()
20078 			cwa = tp->snd_cwnd -ctf_flight_size(rack->rc_tp, rack->r_ctl.rc_sacked);  in rack_output()
20081 		if ((cwa >= rack->r_ctl.pcm_max_seg) &&  in rack_output()
20082 		    (rw_avail > rack->r_ctl.pcm_max_seg)) {  in rack_output()
20084 			pace_max_seg = rack->r_ctl.pcm_max_seg;  in rack_output()
20086 			rack->r_fast_output = 0;  in rack_output()
20090 				     cwa, rack->r_ctl.pcm_max_seg, rw_avail);  in rack_output()
20093 	sb_offset = tp->snd_max - tp->snd_una;  in rack_output()
20094 	cwnd_to_use = rack->r_ctl.cwnd_to_use = tp->snd_cwnd;  in rack_output()
20095 	flags = tcp_outflags[tp->t_state];  in rack_output()
20096 	while (rack->rc_free_cnt < rack_free_cache) {  in rack_output()
20102 			so = inp->inp_socket;  in rack_output()
20103 			sb = &so->so_snd;  in rack_output()
20106 		TAILQ_INSERT_TAIL(&rack->r_ctl.rc_free, rsm, r_tnext);  in rack_output()
20107 		rack->rc_free_cnt++;  in rack_output()
20114 		SOCK_SENDBUF_LOCK(inp->inp_socket);  in rack_output()
20115 		so = inp->inp_socket;  in rack_output()
20116 		sb = &so->so_snd;  in rack_output()
20119 	if (rack->r_ctl.rc_resend) {  in rack_output()
20121 		rsm = rack->r_ctl.rc_resend;  in rack_output()
20122 		rack->r_ctl.rc_resend = NULL;  in rack_output()
20123 		len = rsm->r_end - rsm->r_start;  in rack_output()
20126 		KASSERT(SEQ_LEQ(tp->snd_una, rsm->r_start),  in rack_output()
20129 			 rsm->r_start, tp->snd_una, tp, rack, rsm));  in rack_output()
20130 		sb_offset = rsm->r_start - tp->snd_una;  in rack_output()
20132 	} else if (rack->r_collapse_point_valid &&  in rack_output()
20139 		tcp_trace_point(rack->rc_tp, TCP_TP_COLLAPSED_RXT);  in rack_output()
20140 		rack->r_ctl.last_collapse_point = rsm->r_end;  in rack_output()
20142 		if (SEQ_GEQ(rack->r_ctl.last_collapse_point,  in rack_output()
20143 			    rack->r_ctl.high_collapse_point))  in rack_output()
20144 			rack->r_collapse_point_valid = 0;  in rack_output()
20148 		len = rsm->r_end - rsm->r_start;  in rack_output()
20149 		sb_offset = rsm->r_start - tp->snd_una;  in rack_output()
20154 		if ((!IN_FASTRECOVERY(tp->t_flags)) &&  in rack_output()
20155 		    ((rsm->r_flags & RACK_MUST_RXT) == 0) &&  in rack_output()
20156 		    ((tp->t_flags & TF_WASFRECOVERY) == 0)) {  in rack_output()
20157 			/* Enter recovery if not induced by a time-out */  in rack_output()
20158 			rack_cong_signal(tp, CC_NDUPACK, tp->snd_una, __LINE__);  in rack_output()
20161 		if (SEQ_LT(rsm->r_start, tp->snd_una)) {  in rack_output()
20163 			      tp, rack, rsm, rsm->r_start, tp->snd_una);  in rack_output()
20166 		len = rsm->r_end - rsm->r_start;  in rack_output()
20167 		KASSERT(SEQ_LEQ(tp->snd_una, rsm->r_start),  in rack_output()
20170 			 rsm->r_start, tp->snd_una, tp, rack, rsm));  in rack_output()
20171 		sb_offset = rsm->r_start - tp->snd_una;  in rack_output()
20180 	} else if (rack->r_ctl.rc_tlpsend) {  in rack_output()
20191 		rsm = rack->r_ctl.rc_tlpsend;  in rack_output()
20193 		rsm->r_flags |= RACK_TLP;  in rack_output()
20194 		rack->r_ctl.rc_tlpsend = NULL;  in rack_output()
20196 		tlen = rsm->r_end - rsm->r_start;  in rack_output()
20199 		KASSERT(SEQ_LEQ(tp->snd_una, rsm->r_start),  in rack_output()
20202 			 rsm->r_start, tp->snd_una, tp, rack, rsm));  in rack_output()
20203 		sb_offset = rsm->r_start - tp->snd_una;  in rack_output()
20204 		cwin = min(tp->snd_wnd, tlen);  in rack_output()
20207 	if (rack->r_must_retran &&  in rack_output()
20209 	    (SEQ_GT(tp->snd_max, tp->snd_una)) &&  in rack_output()
20214 		 * a) This is a non-sack connection, we had a time-out  in rack_output()
20228 		sendwin = min(tp->snd_wnd, tp->snd_cwnd);  in rack_output()
20229 		flight = ctf_flight_size(tp, rack->r_ctl.rc_out_at_rto);  in rack_output()
20234 			so = inp->inp_socket;  in rack_output()
20235 			sb = &so->so_snd;  in rack_output()
20240 		 * outstanding/not-acked should be marked.  in rack_output()
20243 		rsm = TAILQ_FIRST(&rack->r_ctl.rc_tmap);  in rack_output()
20246 			rack->r_must_retran = 0;  in rack_output()
20247 			rack->r_ctl.rc_out_at_rto = 0;  in rack_output()
20248 			so = inp->inp_socket;  in rack_output()
20249 			sb = &so->so_snd;  in rack_output()
20252 		if ((rsm->r_flags & RACK_MUST_RXT) == 0) {  in rack_output()
20257 			rack->r_must_retran = 0;  in rack_output()
20258 			rack->r_ctl.rc_out_at_rto = 0;  in rack_output()
20263 			len = rsm->r_end - rsm->r_start;  in rack_output()
20264 			sb_offset = rsm->r_start - tp->snd_una;  in rack_output()
20266 			if ((rack->full_size_rxt == 0) &&  in rack_output()
20267 			    (rack->shape_rxt_to_pacing_min == 0) &&  in rack_output()
20270 			else if (rack->shape_rxt_to_pacing_min &&  in rack_output()
20271 				 rack->gp_ready) {  in rack_output()
20292 	    (rack->r_ctl.rc_num_maps_alloced >= V_tcp_map_entries_limit)) {  in rack_output()
20294 		if (!rack->alloc_limit_reported) {  in rack_output()
20295 			rack->alloc_limit_reported = 1;  in rack_output()
20298 		so = inp->inp_socket;  in rack_output()
20299 		sb = &so->so_snd;  in rack_output()
20302 	if (rsm && (rsm->r_flags & RACK_HAS_FIN)) {  in rack_output()
20304 		len--;  in rack_output()
20313 	if (rsm && rack->r_fsb_inited &&  in rack_output()
20315 	    ((rsm->r_flags & RACK_HAS_FIN) == 0)) {  in rack_output()
20322 	so = inp->inp_socket;  in rack_output()
20323 	sb = &so->so_snd;  in rack_output()
20329 	if ((tp->t_flags2 & TF2_TCP_SCWND_ALLOWED) &&  in rack_output()
20330 	    rack->rack_enable_scwnd) {  in rack_output()
20332 		if (rack->gp_ready &&  in rack_output()
20333 		    (rack->rack_attempted_scwnd == 0) &&  in rack_output()
20334 		    (rack->r_ctl.rc_scw == NULL) &&  in rack_output()
20335 		    tp->t_lib) {  in rack_output()
20338 			rack->rack_attempted_scwnd = 1;  in rack_output()
20339 			rack->r_ctl.rc_scw = tcp_shared_cwnd_alloc(tp,  in rack_output()
20340 								   &rack->r_ctl.rc_scw_index,  in rack_output()
20343 		if (rack->r_ctl.rc_scw &&  in rack_output()
20344 		    (rack->rack_scwnd_is_idle == 1) &&  in rack_output()
20345 		    sbavail(&so->so_snd)) {  in rack_output()
20347 			tcp_shared_cwnd_active(rack->r_ctl.rc_scw, rack->r_ctl.rc_scw_index);  in rack_output()
20348 			rack->rack_scwnd_is_idle = 0;  in rack_output()
20350 		if (rack->r_ctl.rc_scw) {  in rack_output()
20352 			rack->r_ctl.cwnd_to_use = cwnd_to_use = tcp_shared_cwnd_update(rack->r_ctl.rc_scw,  in rack_output()
20353 										       rack->r_ctl.rc_scw_index,  in rack_output()
20354 										       tp->snd_cwnd, tp->snd_wnd, segsiz);  in rack_output()
20362 	if (tp->t_flags & TF_NEEDFIN)  in rack_output()
20364 	if (tp->t_flags & TF_NEEDSYN)  in rack_output()
20368 		end_rsm = TAILQ_LAST_FAST(&rack->r_ctl.rc_tmap, rack_sendmap, r_tnext);  in rack_output()
20375 	    (TCPS_HAVEESTABLISHED(tp->t_state) ||  in rack_output()
20376 	    (tp->t_flags & TF_FASTOPEN))) {  in rack_output()
20386 		if (SEQ_GT(tp->snd_max, tp->snd_una) && avail)  in rack_output()
20387 			sb_offset = tp->snd_max - tp->snd_una;  in rack_output()
20390 		if ((IN_FASTRECOVERY(tp->t_flags) == 0) || rack->rack_no_prr) {  in rack_output()
20391 			if (rack->r_ctl.rc_tlp_new_data) {  in rack_output()
20393 				if (rack->r_ctl.rc_tlp_new_data > (uint32_t) (avail - sb_offset)) {  in rack_output()
20394 					rack->r_ctl.rc_tlp_new_data = (uint32_t) (avail - sb_offset);  in rack_output()
20396 				if ((rack->r_ctl.rc_tlp_new_data + sb_offset) > tp->snd_wnd) {  in rack_output()
20397 					if (tp->snd_wnd > sb_offset)  in rack_output()
20398 						len = tp->snd_wnd - sb_offset;  in rack_output()
20402 					len = rack->r_ctl.rc_tlp_new_data;  in rack_output()
20404 				rack->r_ctl.rc_tlp_new_data = 0;  in rack_output()
20408 			if ((rack->r_ctl.crte == NULL) &&  in rack_output()
20409 			    IN_FASTRECOVERY(tp->t_flags) &&  in rack_output()
20410 			    (rack->full_size_rxt == 0) &&  in rack_output()
20411 			    (rack->shape_rxt_to_pacing_min == 0) &&  in rack_output()
20421 			} else if (rack->shape_rxt_to_pacing_min &&  in rack_output()
20422 				   rack->gp_ready) {  in rack_output()
20440 			outstanding = tp->snd_max - tp->snd_una;  in rack_output()
20441 			if ((rack->r_ctl.rc_prr_sndcnt + outstanding) > tp->snd_wnd) {  in rack_output()
20442 				if (tp->snd_wnd > outstanding) {  in rack_output()
20443 					len = tp->snd_wnd - outstanding;  in rack_output()
20448 							len = avail - sb_offset;  in rack_output()
20456 				len = avail - sb_offset;  in rack_output()
20461 				if (len > rack->r_ctl.rc_prr_sndcnt) {  in rack_output()
20462 					len = rack->r_ctl.rc_prr_sndcnt;  in rack_output()
20474 				 * let us send a lot as well :-)  in rack_output()
20476 				if (rack->r_ctl.rc_prr_sendalot == 0) {  in rack_output()
20488 				leftinsb = sbavail(sb) - sb_offset;  in rack_output()
20495 	} else if (!TCPS_HAVEESTABLISHED(tp->t_state)) {  in rack_output()
20502 		    !(tp->t_flags & TF_FASTOPEN)) {  in rack_output()
20514 	 * SYN-SENT state and if segment contains data and if we don't know  in rack_output()
20518 	    SEQ_GT(tp->snd_max, tp->snd_una) &&  in rack_output()
20520 	     (tp->t_rxtshift == 0))) {  in rack_output()
20525 		if ((tp->t_flags & TF_FASTOPEN) &&  in rack_output()
20526 		    (tp->t_state == TCPS_SYN_RECEIVED))  in rack_output()
20534 	if ((flags & TH_SYN) && (tp->t_flags & TF_NOOPT)) {  in rack_output()
20541 	 *  - When retransmitting SYN|ACK on a passively-created socket  in rack_output()
20543 	 *  - When retransmitting SYN on an actively created socket  in rack_output()
20545 	 *  - When sending a zero-length cookie (cookie request) on an  in rack_output()
20548 	 *  - When the socket is in the CLOSED state (RST is being sent)  in rack_output()
20550 	if ((tp->t_flags & TF_FASTOPEN) &&  in rack_output()
20551 	    (((flags & TH_SYN) && (tp->t_rxtshift > 0)) ||  in rack_output()
20552 	     ((tp->t_state == TCPS_SYN_SENT) &&  in rack_output()
20553 	      (tp->t_tfo_client_cookie_len == 0)) ||  in rack_output()
20558 	/* Without fast-open there should never be data sent on a SYN */  in rack_output()
20559 	if ((flags & TH_SYN) && !(tp->t_flags & TF_FASTOPEN)) {  in rack_output()
20573 		if ((tp->snd_wnd == 0) &&  in rack_output()
20574 		    (TCPS_HAVEESTABLISHED(tp->t_state)) &&  in rack_output()
20575 		    (tp->snd_una == tp->snd_max) &&  in rack_output()
20577 			rack_enter_persist(tp, rack, cts, tp->snd_una);  in rack_output()
20587 		if ((tp->snd_wnd < min((rack->r_ctl.rc_high_rwnd/2), minseg)) &&  in rack_output()
20588 		    (TCPS_HAVEESTABLISHED(tp->t_state)) &&  in rack_output()
20590 		    (len < (int)(sbavail(sb) - sb_offset))) {  in rack_output()
20600 			if (tp->snd_max == tp->snd_una) {  in rack_output()
20605 				rack_enter_persist(tp, rack, cts, tp->snd_una);  in rack_output()
20608 			   (ctf_flight_size(tp, rack->r_ctl.rc_sacked) > (2 * segsiz)) &&  in rack_output()
20609 			   (len < (int)(sbavail(sb) - sb_offset)) &&  in rack_output()
20615 			 * not having gone off), We have 2 segments or  in rack_output()
20622 		} else if (((tp->snd_wnd - ctf_outstanding(tp)) <  in rack_output()
20623 			    min((rack->r_ctl.rc_high_rwnd/2), minseg)) &&  in rack_output()
20624 			   (ctf_flight_size(tp, rack->r_ctl.rc_sacked) > (2 * segsiz)) &&  in rack_output()
20625 			   (len < (int)(sbavail(sb) - sb_offset)) &&  in rack_output()
20626 			   (TCPS_HAVEESTABLISHED(tp->t_state))) {  in rack_output()
20636 		} else if ((rack->r_ctl.crte != NULL) &&  in rack_output()
20637 			   (tp->snd_wnd >= (pace_max_seg * max(1, rack_hw_rwnd_factor))) &&  in rack_output()
20639 			   (ctf_flight_size(tp, rack->r_ctl.rc_sacked) >= (2 * segsiz)) &&  in rack_output()
20640 			   (len < (int)(sbavail(sb) - sb_offset))) {  in rack_output()
20660 			 * defeats the point of hw-pacing (i.e. to help us get  in rack_output()
20675 	 * presence of TCP-MD5, SACK retransmits, SACK advertizements and IP  in rack_output()
20689 	 * Pre-calculate here as we save another lookup into the darknesses  in rack_output()
20708 	if ((tp->t_flags & TF_TSO) && V_tcp_do_tso && len > segsiz &&  in rack_output()
20709 	    (tp->t_port == 0) &&  in rack_output()
20710 	    ((tp->t_flags & TF_SIGNATURE) == 0) &&  in rack_output()
20717 		outstanding = tp->snd_max - tp->snd_una;  in rack_output()
20718 		if (tp->t_flags & TF_SENTFIN) {  in rack_output()
20723 			outstanding--;  in rack_output()
20726 			if ((rsm->r_flags & RACK_HAS_FIN) == 0)  in rack_output()
20730 	recwin = lmin(lmax(sbspace(&so->so_rcv), 0),  in rack_output()
20731 		      (long)TCP_MAXWIN << tp->rcv_scale);  in rack_output()
20735 	 * conditions when len is non-zero:  in rack_output()
20737 	 * - We have a full segment (or more with TSO) - This is the last  in rack_output()
20739 	 * NODELAY - we've timed out (e.g. persist timer) - we have more  in rack_output()
20741 	 * limited the window size) - we need to retransmit  in rack_output()
20753 		if (!(tp->t_flags & TF_MORETOCOME) &&	/* normal case */  in rack_output()
20754 		    (idle || (tp->t_flags & TF_NODELAY)) &&  in rack_output()
20756 		    (tp->t_flags & TF_NOPUSH) == 0) {  in rack_output()
20760 		if ((tp->snd_una == tp->snd_max) && len) {	/* Nothing outstanding */  in rack_output()
20764 		if (len >= tp->max_sndwnd / 2 && tp->max_sndwnd > 0) {  in rack_output()
20772 		if (((tp->snd_wnd - ctf_outstanding(tp)) < segsiz) &&  in rack_output()
20809 	 * pending (it will get piggy-backed on it) or the remote side  in rack_output()
20810 	 * already has done a half-close and won't send more data.  Skip  in rack_output()
20811 	 * this if the connection is in T/TCP half-open state.  in rack_output()
20813 	if (recwin > 0 && !(tp->t_flags & TF_NEEDSYN) &&  in rack_output()
20814 	    !(tp->t_flags & TF_DELACK) &&  in rack_output()
20815 	    !TCPS_HAVERCVDFIN(tp->t_state)) {  in rack_output()
20819 		 * tp->rcv_scale.  in rack_output()
20825 		if (SEQ_GT(tp->rcv_adv, tp->rcv_nxt)) {  in rack_output()
20826 			oldwin = (tp->rcv_adv - tp->rcv_nxt);  in rack_output()
20828 				adv -= oldwin;  in rack_output()
20841 		if (oldwin >> tp->rcv_scale >= (adv + oldwin) >> tp->rcv_scale)  in rack_output()
20845 		    (adv >= (int32_t)(so->so_rcv.sb_hiwat / 4) ||  in rack_output()
20846 		     recwin <= (int32_t)(so->so_rcv.sb_hiwat / 8) ||  in rack_output()
20847 		     so->so_rcv.sb_hiwat <= 8 * segsiz)) {  in rack_output()
20851 		if (2 * adv >= (int32_t) so->so_rcv.sb_hiwat) {  in rack_output()
20860 	 * is also a catch-all for the retransmit timer timeout case.  in rack_output()
20862 	if (tp->t_flags & TF_ACKNOW) {  in rack_output()
20866 	if (((flags & TH_SYN) && (tp->t_flags & TF_NEEDSYN) == 0)) {  in rack_output()
20875 	    (tp->snd_max == tp->snd_una)) {  in rack_output()
20888 		if ((tp->t_flags & TF_FASTOPEN) == 0 &&  in rack_output()
20891 		    (sbused(sb) == (tp->snd_max - tp->snd_una)) &&  in rack_output()
20892 		    ((tp->snd_max - tp->snd_una) <= segsiz)) {  in rack_output()
20901 			 * the peer wait for the delayed-ack timer to run off  in rack_output()
20907 			rack->r_ctl.fsb.recwin = recwin;  in rack_output()
20913 			    rack->r_fsb_inited &&  in rack_output()
20914 			    TCPS_HAVEESTABLISHED(tp->t_state) &&  in rack_output()
20915 			    ((IN_RECOVERY(tp->t_flags)) == 0) &&  in rack_output()
20916 			    (rack->r_must_retran == 0) &&  in rack_output()
20917 			    ((tp->t_flags & TF_NEEDFIN) == 0) &&  in rack_output()
20920 			    ((orig_len - len) >= segsiz) &&  in rack_output()
20927 				rack->r_fast_output = 0;  in rack_output()
20932 			if (SEQ_GT(tp->snd_max, tp->snd_nxt))  in rack_output()
20933 				tp->snd_nxt = tp->snd_max;  in rack_output()
20936 			uint32_t seq = tp->gput_ack;  in rack_output()
20938 			rsm = tqhash_max(rack->r_ctl.tqh);  in rack_output()
20941 				 * Mark the last sent that we just-returned (hinting  in rack_output()
20944 				rsm->r_just_ret = 1;  in rack_output()
20947 			rack->r_ctl.rc_agg_delayed = 0;  in rack_output()
20948 			rack->r_early = 0;  in rack_output()
20949 			rack->r_late = 0;  in rack_output()
20950 			rack->r_ctl.rc_agg_early = 0;  in rack_output()
20952 			     min(max(segsiz, (rack->r_ctl.rc_high_rwnd/2)),  in rack_output()
20953 				 minseg)) >= tp->snd_wnd) {  in rack_output()
20956 				if (IN_FASTRECOVERY(tp->t_flags))  in rack_output()
20957 					rack->r_ctl.rc_prr_sndcnt = 0;  in rack_output()
20959 				/* We are limited by whats available -- app limited */  in rack_output()
20961 				if (IN_FASTRECOVERY(tp->t_flags))  in rack_output()
20962 					rack->r_ctl.rc_prr_sndcnt = 0;  in rack_output()
20964 				   ((tp->t_flags & TF_NODELAY) == 0) &&  in rack_output()
20971 				 * don't send. Another app-limited case.  in rack_output()
20974 			} else if (tp->t_flags & TF_NOPUSH) {  in rack_output()
20985 			} else if (IN_FASTRECOVERY(tp->t_flags) &&  in rack_output()
20986 				   (rack->rack_no_prr == 0) &&  in rack_output()
20987 				   (rack->r_ctl.rc_prr_sndcnt < segsiz)) {  in rack_output()
21042 				if ((tp->t_flags & TF_GPUTINPROG) &&  in rack_output()
21043 				    SEQ_GT(tp->gput_ack, tp->snd_max)) {  in rack_output()
21044 					tp->gput_ack = tp->snd_max;  in rack_output()
21045 					if ((tp->gput_ack - tp->gput_seq) < (MIN_GP_WIN * segsiz)) {  in rack_output()
21049 						tp->t_flags &= ~TF_GPUTINPROG;  in rack_output()
21050 						rack_log_pacing_delay_calc(rack, (tp->gput_ack - tp->gput_seq) /*flex2*/,  in rack_output()
21051 									   rack->r_ctl.rc_gp_srtt /*flex1*/,  in rack_output()
21052 									   tp->gput_seq,  in rack_output()
21058 				rsm = tqhash_max(rack->r_ctl.tqh);  in rack_output()
21059 				if (rsm && ((rsm->r_flags & RACK_APP_LIMITED) == 0)) {  in rack_output()
21060 					if (rack->r_ctl.rc_app_limited_cnt == 0)  in rack_output()
21061 						rack->r_ctl.rc_end_appl = rack->r_ctl.rc_first_appl = rsm;  in rack_output()
21068 						if (rack->r_ctl.rc_end_appl)  in rack_output()
21069 							rack->r_ctl.rc_end_appl->r_nseq_appl = rsm->r_start;  in rack_output()
21070 						rack->r_ctl.rc_end_appl = rsm;  in rack_output()
21072 					rsm->r_flags |= RACK_APP_LIMITED;  in rack_output()
21073 					rack->r_ctl.rc_app_limited_cnt++;  in rack_output()
21077 								   rack->r_ctl.rc_app_limited_cnt, seq,  in rack_output()
21078 								   tp->gput_ack, 0, 0, 4, __LINE__, NULL, 0);  in rack_output()
21082 		if ((tp->snd_max == tp->snd_una) &&  in rack_output()
21083 		    TCPS_HAVEESTABLISHED(tp->t_state) &&  in rack_output()
21085 		    (sbavail(sb) > tp->snd_wnd) &&  in rack_output()
21086 		    (tp->snd_wnd < min((rack->r_ctl.rc_high_rwnd/2), minseg))) {  in rack_output()
21087 			/* Yes lets make sure to move to persist before timer-start */  in rack_output()
21088 			rack_enter_persist(tp, rack, rack->r_ctl.rc_rcvtime, tp->snd_una);  in rack_output()
21095 	    rack->r_ctl.rc_scw) {  in rack_output()
21096 		tcp_shared_cwnd_idle(rack->r_ctl.rc_scw, rack->r_ctl.rc_scw_index);  in rack_output()
21097 		rack->rack_scwnd_is_idle = 1;  in rack_output()
21103 		if (tp->t_flags2 & TF2_TCP_ACCOUNTING) {  in rack_output()
21104 			tp->tcp_cnt_counters[SND_OUT_DATA]++;  in rack_output()
21106 		if (tp->t_flags2 & TF2_TCP_ACCOUNTING) {  in rack_output()
21107 			tp->tcp_proc_time[SND_OUT_DATA] += (crtsc - ts_val);  in rack_output()
21109 		if (tp->t_flags2 & TF2_TCP_ACCOUNTING) {  in rack_output()
21110 			tp->tcp_cnt_counters[CNT_OF_MSS_OUT] += ((tot_len_this_send + segsiz - 1) / segsiz);  in rack_output()
21114 		if (tp->t_flags2 & TF2_TCP_ACCOUNTING) {  in rack_output()
21115 			tp->tcp_cnt_counters[SND_LIMITED]++;  in rack_output()
21117 		if (tp->t_flags2 & TF2_TCP_ACCOUNTING) {  in rack_output()
21118 			tp->tcp_proc_time[SND_LIMITED] += (crtsc - ts_val);  in rack_output()
21126 	if ((rack->r_ctl.crte != NULL) &&  in rack_output()
21128 	    ((rack->rc_hw_nobuf == 1) ||  in rack_output()
21138 			rack->r_ctl.rc_agg_delayed = 0;  in rack_output()
21139 			rack->r_ctl.rc_agg_early = 0;  in rack_output()
21140 			rack->r_early = 0;  in rack_output()
21141 			rack->r_late = 0;  in rack_output()
21159 		if (TCPS_HAVEESTABLISHED(tp->t_state) &&  in rack_output()
21160 		    (sbused(sb) == (tp->snd_max - tp->snd_una)) &&  in rack_output()
21161 		    ((tp->snd_max - tp->snd_una) <= segsiz)) {  in rack_output()
21170 			 * the peer wait for the delayed-ack timer to run off  in rack_output()
21183 	    (rack->pcm_in_progress == 0) &&  in rack_output()
21184 	    (rack->r_ctl.pcm_max_seg > 0) &&  in rack_output()
21185 	    (len >= rack->r_ctl.pcm_max_seg)) {  in rack_output()
21188 		rack_log_pcm(rack, 5, len, rack->r_ctl.pcm_max_seg,  add_flag);  in rack_output()
21190 		rack_log_pcm(rack, 6, len, rack->r_ctl.pcm_max_seg,  add_flag);  in rack_output()
21196 			tp->t_flags2 |= TF2_PLPMTU_MAXSEGSNT;  in rack_output()
21198 			tp->t_flags2 &= ~TF2_PLPMTU_MAXSEGSNT;  in rack_output()
21220 	 * be snd_max-1 else its snd_max.  in rack_output()
21224 			rack_seq = tp->iss;  in rack_output()
21226 			 (tp->t_flags & TF_SENTFIN))  in rack_output()
21227 			rack_seq = tp->snd_max - 1;  in rack_output()
21229 			rack_seq = tp->snd_max;  in rack_output()
21231 		rack_seq = rsm->r_start;  in rack_output()
21235 	 * established connection segments.  Options for SYN-ACK segments  in rack_output()
21239 	if ((tp->t_flags & TF_NOOPT) == 0) {  in rack_output()
21242 			to.to_mss = tcp_mssopt(&inp->inp_inc);  in rack_output()
21243 			if (tp->t_port)  in rack_output()
21244 				to.to_mss -= V_tcp_udp_tunneling_overhead;  in rack_output()
21254 			if ((tp->t_flags & TF_FASTOPEN) &&  in rack_output()
21255 			    (tp->t_rxtshift == 0)) {  in rack_output()
21256 				if (tp->t_state == TCPS_SYN_RECEIVED) {  in rack_output()
21259 						(u_int8_t *)&tp->t_tfo_cookie.server;  in rack_output()
21262 				} else if (tp->t_state == TCPS_SYN_SENT) {  in rack_output()
21264 						tp->t_tfo_client_cookie_len;  in rack_output()
21266 						tp->t_tfo_cookie.client;  in rack_output()
21281 		if ((flags & TH_SYN) && (tp->t_flags & TF_REQ_SCALE)) {  in rack_output()
21282 			to.to_wscale = tp->request_r_scale;  in rack_output()
21286 		if ((tp->t_flags & TF_RCVD_TSTMP) ||  in rack_output()
21287 		    ((flags & TH_SYN) && (tp->t_flags & TF_REQ_TSTMP))) {  in rack_output()
21290 			if ((rack->r_rcvpath_rtt_up == 1) &&  in rack_output()
21291 			    (ms_cts == rack->r_ctl.last_rcv_tstmp_for_rtt)) {  in rack_output()
21299 				 * our ack-probe.  in rack_output()
21305 			to.to_tsval = ts_to_use + tp->ts_offset;  in rack_output()
21306 			to.to_tsecr = tp->ts_recent;  in rack_output()
21309 			    (TCPS_HAVEESTABLISHED(tp->t_state)) &&  in rack_output()
21310 			    ((ms_cts - rack->r_ctl.last_rcv_tstmp_for_rtt) > RCV_PATH_RTT_MS) &&  in rack_output()
21311 			    (tp->snd_una == tp->snd_max) &&  in rack_output()
21314 			    (rack->r_ctl.current_round != 0) &&  in rack_output()
21316 			    (rack->r_rcvpath_rtt_up == 0)) {  in rack_output()
21317 				rack->r_ctl.last_rcv_tstmp_for_rtt = ms_cts;  in rack_output()
21318 				rack->r_ctl.last_time_of_arm_rcv = cts;  in rack_output()
21319 				rack->r_rcvpath_rtt_up = 1;  in rack_output()
21321 				rack_seq--;  in rack_output()
21325 		if (tp->rfbuf_ts == 0 &&  in rack_output()
21326 		    (so->so_rcv.sb_flags & SB_AUTOSIZE)) {  in rack_output()
21327 			tp->rfbuf_ts = ms_cts;  in rack_output()
21330 		if (tp->t_flags & TF_SACK_PERMIT) {  in rack_output()
21333 			else if (TCPS_HAVEESTABLISHED(tp->t_state) &&  in rack_output()
21334 				 tp->rcv_numsacks > 0) {  in rack_output()
21336 				to.to_nsacks = tp->rcv_numsacks;  in rack_output()
21337 				to.to_sacks = (u_char *)tp->sackblks;  in rack_output()
21341 		/* TCP-MD5 (RFC2385). */  in rack_output()
21342 		if (tp->t_flags & TF_SIGNATURE)  in rack_output()
21352 		if ((tp->t_flags & TF_FASTOPEN) && wanted_cookie &&  in rack_output()
21356 	if (tp->t_port) {  in rack_output()
21362 			if (tp->t_flags2 & TF2_TCP_ACCOUNTING) {  in rack_output()
21363 				tp->tcp_cnt_counters[SND_OUT_FAIL]++;  in rack_output()
21365 			if (tp->t_flags2 & TF2_TCP_ACCOUNTING) {  in rack_output()
21366 				tp->tcp_proc_time[SND_OUT_FAIL] += (crtsc - ts_val);  in rack_output()
21379 		if (inp->inp_options)  in rack_output()
21380 			ipoptlen = inp->inp_options->m_len -  in rack_output()
21393 	if (len + optlen + ipoptlen > tp->t_maxseg) {  in rack_output()
21400 			if_hw_tsomax = tp->t_tsomax;  in rack_output()
21401 			if_hw_tsomaxsegcount = tp->t_tsomaxsegcount;  in rack_output()
21402 			if_hw_tsomaxsegsize = tp->t_tsomaxsegsize;  in rack_output()
21412 				max_len = (if_hw_tsomax - hdrlen -  in rack_output()
21426 			max_len = (tp->t_maxseg - optlen);  in rack_output()
21431 					len -= moff;  in rack_output()
21448 			if (tp->t_flags & TF_NEEDFIN) {  in rack_output()
21453 			if (optlen + ipoptlen >= tp->t_maxseg) {  in rack_output()
21467 			len = tp->t_maxseg - optlen - ipoptlen;  in rack_output()
21499 		if ((sbused(sb) == (tp->snd_max - tp->snd_una)) &&  in rack_output()
21500 		    ((tp->snd_max - tp->snd_una) <= segsiz)) {  in rack_output()
21509 			 * the peer wait for the delayed-ack timer to run off  in rack_output()
21521 	hw_tls = tp->t_nic_ktls_xmit != 0;  in rack_output()
21550 		m->m_data += max_linkhdr;  in rack_output()
21551 		m->m_len = hdrlen;  in rack_output()
21560 		if (len <= MHLEN - hdrlen - max_linkhdr && !hw_tls) {  in rack_output()
21570 			m->m_len += len;  in rack_output()
21585 			m->m_next = tcp_m_copym(  in rack_output()
21593 			if (len <= (tp->t_maxseg - optlen)) {  in rack_output()
21602 			if (m->m_next == NULL) {  in rack_output()
21611 			if (rsm && (rsm->r_flags & RACK_TLP)) {  in rack_output()
21619 				tp->t_sndrexmitpack++;  in rack_output()
21624 			stats_voi_update_abs_u32(tp->t_stats, VOI_TCP_RETXPB,  in rack_output()
21631 			stats_voi_update_abs_u64(tp->t_stats, VOI_TCP_TXPB,  in rack_output()
21650 		if (tp->t_flags & TF_ACKNOW)  in rack_output()
21669 			m->m_data += max_linkhdr;  in rack_output()
21670 		m->m_len = hdrlen;  in rack_output()
21673 	m->m_pkthdr.rcvif = (struct ifnet *)0;  in rack_output()
21677 	if ((ipoptlen == 0) && (rack->r_ctl.fsb.tcp_ip_hdr) &&  rack->r_fsb_inited) {  in rack_output()
21680 			ip6 = (struct ip6_hdr *)rack->r_ctl.fsb.tcp_ip_hdr;  in rack_output()
21684 			ip = (struct ip *)rack->r_ctl.fsb.tcp_ip_hdr;  in rack_output()
21686 		th = rack->r_ctl.fsb.th;  in rack_output()
21687 		udp = rack->r_ctl.fsb.udp;  in rack_output()
21691 				ulen = hdrlen + len - sizeof(struct ip6_hdr);  in rack_output()
21694 				ulen = hdrlen + len - sizeof(struct ip);  in rack_output()
21695 			udp->uh_ulen = htons(ulen);  in rack_output()
21701 			if (tp->t_port) {  in rack_output()
21703 				udp->uh_sport = htons(V_tcp_udp_tunneling_port);  in rack_output()
21704 				udp->uh_dport = tp->t_port;  in rack_output()
21705 				ulen = hdrlen + len - sizeof(struct ip6_hdr);  in rack_output()
21706 				udp->uh_ulen = htons(ulen);  in rack_output()
21710 			tcpip_fillheaders(inp, tp->t_port, ip6, th);  in rack_output()
21716 			if (tp->t_port) {  in rack_output()
21718 				udp->uh_sport = htons(V_tcp_udp_tunneling_port);  in rack_output()
21719 				udp->uh_dport = tp->t_port;  in rack_output()
21720 				ulen = hdrlen + len - sizeof(struct ip);  in rack_output()
21721 				udp->uh_ulen = htons(ulen);  in rack_output()
21725 			tcpip_fillheaders(inp, tp->t_port, ip, th);  in rack_output()
21734 	if (tp->t_state == TCPS_SYN_SENT && V_tcp_do_ecn) {  in rack_output()
21738 	if (TCPS_HAVERCVDSYN(tp->t_state) &&  in rack_output()
21739 	    (tp->t_flags2 & (TF2_ECN_PERMIT | TF2_ACE_PERMIT))) {  in rack_output()
21741 		if ((tp->t_state == TCPS_SYN_RECEIVED) &&  in rack_output()
21742 		    (tp->t_flags2 & TF2_ECN_SND_ECE))  in rack_output()
21743 			tp->t_flags2 &= ~TF2_ECN_SND_ECE;  in rack_output()
21746 			ip6->ip6_flow &= ~htonl(IPTOS_ECN_MASK << 20);  in rack_output()
21747 			ip6->ip6_flow |= htonl(ect << 20);  in rack_output()
21753 			ip->ip_tos &= ~IPTOS_ECN_MASK;  in rack_output()
21754 			ip->ip_tos |= ect;  in rack_output()
21758 	th->th_seq = htonl(rack_seq);  in rack_output()
21759 	th->th_ack = htonl(tp->rcv_nxt);  in rack_output()
21769 		if (recwin < (long)(so->so_rcv.sb_hiwat / 4) &&  in rack_output()
21773 		if (SEQ_GT(tp->rcv_adv, tp->rcv_nxt) &&  in rack_output()
21774 		    recwin < (long)(tp->rcv_adv - tp->rcv_nxt))  in rack_output()
21775 			recwin = (long)(tp->rcv_adv - tp->rcv_nxt);  in rack_output()
21784 		th->th_win = htons((u_short)  in rack_output()
21785 				   (min(sbspace(&so->so_rcv), TCP_MAXWIN)));  in rack_output()
21788 		recwin = roundup2(recwin, 1 << tp->rcv_scale);  in rack_output()
21789 		th->th_win = htons((u_short)(recwin >> tp->rcv_scale));  in rack_output()
21792 	 * Adjust the RXWIN0SENT flag - indicate that we have advertised a 0  in rack_output()
21799 	if (th->th_win == 0) {  in rack_output()
21800 		tp->t_sndzerowin++;  in rack_output()
21801 		tp->t_flags |= TF_RXWIN0SENT;  in rack_output()
21803 		tp->t_flags &= ~TF_RXWIN0SENT;  in rack_output()
21804 	tp->snd_up = tp->snd_una;	/* drag it along, its deprecated */  in rack_output()
21806 	if ((ipoptlen == 0) && (rack->r_ctl.fsb.tcp_ip_hdr) && rack->r_fsb_inited) {  in rack_output()
21810 		memcpy(cpto, rack->r_ctl.fsb.tcp_ip_hdr, rack->r_ctl.fsb.tcp_ip_hdr_len);  in rack_output()
21830 		th = (struct tcphdr *)(cpto + ((uint8_t *)rack->r_ctl.fsb.th - rack->r_ctl.fsb.tcp_ip_hdr));  in rack_output()
21833 			udp = (struct udphdr *)(cpto + ((uint8_t *)rack->r_ctl.fsb.udp - rack->r_ctl.fsb.tcp_ip_hdr));  in rack_output()
21837 		th->th_off = (sizeof(struct tcphdr) + optlen) >> 2;  in rack_output()
21843 	m->m_pkthdr.len = hdrlen + len;	/* in6_cksum() need this */  in rack_output()
21853 						       (u_char *)(th + 1) + (to.to_signature - opt)) != 0) {  in rack_output()
21868 		if (tp->t_port) {  in rack_output()
21869 			m->m_pkthdr.csum_flags = CSUM_UDP_IPV6;  in rack_output()
21870 			m->m_pkthdr.csum_data = offsetof(struct udphdr, uh_sum);  in rack_output()
21871 			udp->uh_sum = in6_cksum_pseudo(ip6, ulen, IPPROTO_UDP, 0);  in rack_output()
21872 			th->th_sum = htons(0);  in rack_output()
21875 			m->m_pkthdr.csum_flags = CSUM_TCP_IPV6;  in rack_output()
21876 			m->m_pkthdr.csum_data = offsetof(struct tcphdr, th_sum);  in rack_output()
21877 			th->th_sum = in6_cksum_pseudo(ip6,  in rack_output()
21888 		if (tp->t_port) {  in rack_output()
21889 			m->m_pkthdr.csum_flags = CSUM_UDP;  in rack_output()
21890 			m->m_pkthdr.csum_data = offsetof(struct udphdr, uh_sum);  in rack_output()
21891 			udp->uh_sum = in_pseudo(ip->ip_src.s_addr,  in rack_output()
21892 						ip->ip_dst.s_addr, htons(ulen + IPPROTO_UDP));  in rack_output()
21893 			th->th_sum = htons(0);  in rack_output()
21896 			m->m_pkthdr.csum_flags = CSUM_TCP;  in rack_output()
21897 			m->m_pkthdr.csum_data = offsetof(struct tcphdr, th_sum);  in rack_output()
21898 			th->th_sum = in_pseudo(ip->ip_src.s_addr,  in rack_output()
21899 					       ip->ip_dst.s_addr, htons(sizeof(struct tcphdr) +  in rack_output()
21903 		KASSERT(ip->ip_v == IPVERSION,  in rack_output()
21904 			("%s: IP version incorrect: %d", __func__, ip->ip_v));  in rack_output()
21917 		KASSERT(len > tp->t_maxseg - optlen,  in rack_output()
21919 		m->m_pkthdr.csum_flags |= CSUM_TSO;  in rack_output()
21920 		m->m_pkthdr.tso_segsz = tp->t_maxseg - optlen;  in rack_output()
21930 	if ((rack->r_ctl.crte != NULL) &&  in rack_output()
21931 	    (rack->rc_hw_nobuf == 0) &&  in rack_output()
21936 	if (tcp_bblogging_on(rack->rc_tp)) {  in rack_output()
21940 		log.u_bbr.inhpts = tcp_in_hpts(rack->rc_tp);  in rack_output()
21941 		if (rack->rack_no_prr)  in rack_output()
21944 			log.u_bbr.flex1 = rack->r_ctl.rc_prr_sndcnt;  in rack_output()
21945 		log.u_bbr.flex2 = rack->r_ctl.rc_pace_min_segs;  in rack_output()
21946 		log.u_bbr.flex3 = rack->r_ctl.rc_pace_max_segs;  in rack_output()
21949 		log.u_bbr.flex6 = rack->r_ctl.rc_agg_early;  in rack_output()
21950 		log.u_bbr.applimited = rack->r_ctl.rc_agg_delayed;  in rack_output()
21952 		log.u_bbr.cur_del_rate = rack->r_ctl.gp_bw;  in rack_output()
21955 			if (rsm->r_flags & RACK_RWND_COLLAPSED) {  in rack_output()
21956 				rack_log_collapse(rack, rsm->r_start, rsm->r_end, 0, __LINE__, 5, rsm->r_flags, rsm);  in rack_output()
21958 				counter_u64_add(rack_collapsed_win_rxt_bytes, (rsm->r_end - rsm->r_start));  in rack_output()
21972 		log.u_bbr.pkts_out = tp->t_maxseg;  in rack_output()
21974 		log.u_bbr.inflight = ctf_flight_size(rack->rc_tp, rack->r_ctl.rc_sacked);  in rack_output()
21975 		if (rsm && (rsm->r_rtr_cnt > 0)) {  in rack_output()
21980 			log.u_bbr.flex5 = rsm->r_fas;  in rack_output()
21981 			log.u_bbr.bbr_substate = rsm->r_bas;  in rack_output()
21989 			log.u_bbr.bbr_substate = (uint8_t)((len + segsiz - 1)/segsiz);  in rack_output()
21996 			log.u_bbr.delRate = rsm->r_flags;  in rack_output()
21998 			log.u_bbr.delRate |= rack->r_must_retran;  in rack_output()
22002 			log.u_bbr.delRate = rack->r_must_retran;  in rack_output()
22006 		lgb = tcp_log_event(tp, th, &so->so_rcv, &so->so_snd, TCP_LOG_OUT, ERRNO_UNK,  in rack_output()
22017 	 * m->m_pkthdr.len should have been set before cksum calcuration,  in rack_output()
22028 		rack->r_ctl.fsb.hoplimit = ip6->ip6_hlim = in6_selecthlim(inp, NULL);  in rack_output()
22035 		ip6->ip6_plen = htons(m->m_pkthdr.len - sizeof(*ip6));  in rack_output()
22037 		if (V_path_mtu_discovery && tp->t_maxseg > V_tcp_minmss)  in rack_output()
22038 			tp->t_flags2 |= TF2_PLPMTU_PMTUD;  in rack_output()
22040 			tp->t_flags2 &= ~TF2_PLPMTU_PMTUD;  in rack_output()
22042 		if (tp->t_state == TCPS_SYN_SENT)  in rack_output()
22048 				   inp->in6p_outputopts,  in rack_output()
22049 				   &inp->inp_route6,  in rack_output()
22053 		if (error == EMSGSIZE && inp->inp_route6.ro_nh != NULL)  in rack_output()
22054 			mtu = inp->inp_route6.ro_nh->nh_mtu;  in rack_output()
22062 		ip->ip_len = htons(m->m_pkthdr.len);  in rack_output()
22064 		if (inp->inp_vflag & INP_IPV6PROTO)  in rack_output()
22065 			ip->ip_ttl = in6_selecthlim(inp, NULL);  in rack_output()
22067 		rack->r_ctl.fsb.hoplimit = ip->ip_ttl;  in rack_output()
22078 		if (V_path_mtu_discovery && tp->t_maxseg > V_tcp_minmss) {  in rack_output()
22079 			tp->t_flags2 |= TF2_PLPMTU_PMTUD;  in rack_output()
22080 			if (tp->t_port == 0 || len < V_tcp_minmss) {  in rack_output()
22081 				ip->ip_off |= htons(IP_DF);  in rack_output()
22084 			tp->t_flags2 &= ~TF2_PLPMTU_PMTUD;  in rack_output()
22087 		if (tp->t_state == TCPS_SYN_SENT)  in rack_output()
22094 				  inp->inp_options,  in rack_output()
22098 				  &inp->inp_route,  in rack_output()
22101 		if (error == EMSGSIZE && inp->inp_route.ro_nh != NULL)  in rack_output()
22102 			mtu = inp->inp_route.ro_nh->nh_mtu;  in rack_output()
22106 		lgb->tlb_errno = error;  in rack_output()
22122 			rack->pcm_in_progress = 1;  in rack_output()
22123 			rack->pcm_needed = 0;  in rack_output()
22124 			rack_log_pcm(rack, 7, len, rack->r_ctl.pcm_max_seg,  add_flag);  in rack_output()
22127 			if (rack->lt_bw_up == 0) {  in rack_output()
22128 				rack->r_ctl.lt_timemark = tcp_tv_to_lusectick(&tv);  in rack_output()
22129 				rack->r_ctl.lt_seq = tp->snd_una;  in rack_output()
22130 				rack->lt_bw_up = 1;  in rack_output()
22131 			} else if (((rack_seq + len) - rack->r_ctl.lt_seq) > 0x7fffffff) {  in rack_output()
22138 				rack->r_ctl.lt_bw_bytes += (tp->snd_una - rack->r_ctl.lt_seq);  in rack_output()
22139 				rack->r_ctl.lt_seq = tp->snd_una;  in rack_output()
22141 				if (tmark > rack->r_ctl.lt_timemark) {  in rack_output()
22142 					rack->r_ctl.lt_bw_time += (tmark - rack->r_ctl.lt_timemark);  in rack_output()
22143 					rack->r_ctl.lt_timemark = tmark;  in rack_output()
22147 		rack->forced_ack = 0;	/* If we send something zap the FA flag */  in rack_output()
22151 			rack->rc_last_sent_tlp_past_cumack = 0;  in rack_output()
22152 			rack->rc_last_sent_tlp_seq_valid = 1;  in rack_output()
22153 			rack->r_ctl.last_sent_tlp_seq = rsm->r_start;  in rack_output()
22154 			rack->r_ctl.last_sent_tlp_len = rsm->r_end - rsm->r_start;  in rack_output()
22156 		if (rack->rc_hw_nobuf) {  in rack_output()
22157 			rack->rc_hw_nobuf = 0;  in rack_output()
22158 			rack->r_ctl.rc_agg_delayed = 0;  in rack_output()
22159 			rack->r_early = 0;  in rack_output()
22160 			rack->r_late = 0;  in rack_output()
22161 			rack->r_ctl.rc_agg_early = 0;  in rack_output()
22165 			rack->rc_gp_saw_rec = 1;  in rack_output()
22167 			if (cwnd_to_use > tp->snd_ssthresh) {  in rack_output()
22169 				rack->rc_gp_saw_ca = 1;  in rack_output()
22172 				rack->rc_gp_saw_ss = 1;  in rack_output()
22175 		if (TCPS_HAVEESTABLISHED(tp->t_state) &&  in rack_output()
22176 		    (tp->t_flags & TF_SACK_PERMIT) &&  in rack_output()
22177 		    tp->rcv_numsacks > 0)  in rack_output()
22187 				counter_u64_add(rack_out_size[(TCP_MSS_ACCT_ATIMER-1)], 1);  in rack_output()
22192 	if ((rack->rack_no_prr == 0) &&  in rack_output()
22195 		if (rack->r_ctl.rc_prr_sndcnt >= len)  in rack_output()
22196 			rack->r_ctl.rc_prr_sndcnt -= len;  in rack_output()
22198 			rack->r_ctl.rc_prr_sndcnt = 0;  in rack_output()
22206 		rsm->r_flags &= ~RACK_TLP;  in rack_output()
22212 	    (tp->snd_una == tp->snd_max))  in rack_output()
22213 		rack->r_ctl.rc_tlp_rxt_last_time = cts;  in rack_output()
22220 		tcp_seq startseq = tp->snd_max;  in rack_output()
22224 			rack->r_ctl.rc_loss_count += rsm->r_end - rsm->r_start;  in rack_output()
22235 				rack->rc_tlp_in_progress = 0;  in rack_output()
22236 				rack->r_ctl.rc_tlp_cnt_out = 0;  in rack_output()
22244 			rack->rc_tlp_in_progress = 1;  in rack_output()
22245 			rack->r_ctl.rc_tlp_cnt_out++;  in rack_output()
22253 		if ((tp->snd_una == tp->snd_max) && (len > 0)) {  in rack_output()
22259 			tp->t_acktime = ticks;  in rack_output()
22266 			    ((tp->t_flags & TF_SENTSYN) == 0)) {  in rack_output()
22267 				tp->snd_max++;  in rack_output()
22268 				tp->t_flags |= TF_SENTSYN;  in rack_output()
22271 			    ((tp->t_flags & TF_SENTFIN) == 0)) {  in rack_output()
22272 				tp->snd_max++;  in rack_output()
22273 				tp->t_flags |= TF_SENTFIN;  in rack_output()
22276 		tp->snd_max += len;  in rack_output()
22277 		if (rack->rc_new_rnd_needed) {  in rack_output()
22278 			rack_new_round_starts(tp, rack, tp->snd_max);  in rack_output()
22286 		if (tp->t_rtttime == 0) {  in rack_output()
22287 			tp->t_rtttime = ticks;  in rack_output()
22288 			tp->t_rtseq = startseq;  in rack_output()
22292 		    ((tp->t_flags & TF_GPUTINPROG) == 0))  in rack_output()
22303 		if (rack->r_fast_output && len) {  in rack_output()
22304 			if (rack->r_ctl.fsb.left_to_send > len)  in rack_output()
22305 				rack->r_ctl.fsb.left_to_send -= len;  in rack_output()
22307 				rack->r_ctl.fsb.left_to_send = 0;  in rack_output()
22308 			if (rack->r_ctl.fsb.left_to_send < segsiz)  in rack_output()
22309 				rack->r_fast_output = 0;  in rack_output()
22310 			if (rack->r_fast_output) {  in rack_output()
22311 				rack->r_ctl.fsb.m = sbsndmbuf(sb, (tp->snd_max - tp->snd_una), &rack->r_ctl.fsb.off);  in rack_output()
22312 				rack->r_ctl.fsb.o_m_len = rack->r_ctl.fsb.m->m_len;  in rack_output()
22313 				rack->r_ctl.fsb.o_t_len = M_TRAILINGROOM(rack->r_ctl.fsb.m);  in rack_output()
22320 			    ((pace_max_seg - len) > segsiz)) {  in rack_output()
22328 				n_len = (orig_len - len);  in rack_output()
22329 				orig_len -= len;  in rack_output()
22330 				pace_max_seg -= len;  in rack_output()
22332 				sb_offset = tp->snd_max - tp->snd_una;  in rack_output()
22333 				/* Re-lock for the next spin */  in rack_output()
22340 			    ((orig_len - len) > segsiz)) {  in rack_output()
22348 				n_len = (orig_len - len);  in rack_output()
22349 				orig_len -= len;  in rack_output()
22351 				sb_offset = tp->snd_max - tp->snd_una;  in rack_output()
22352 				/* Re-lock for the next spin */  in rack_output()
22360 		rack->r_ctl.rc_agg_delayed = 0;  in rack_output()
22361 		rack->r_early = 0;  in rack_output()
22362 		rack->r_late = 0;  in rack_output()
22363 		rack->r_ctl.rc_agg_early = 0;  in rack_output()
22378 			tp->t_softerror = error;  in rack_output()
22381 			if (tp->t_flags2 & TF2_TCP_ACCOUNTING) {  in rack_output()
22382 				tp->tcp_cnt_counters[SND_OUT_FAIL]++;  in rack_output()
22384 			if (tp->t_flags2 & TF2_TCP_ACCOUNTING) {  in rack_output()
22385 				tp->tcp_proc_time[SND_OUT_FAIL] += (crtsc - ts_val);  in rack_output()
22395 			if (rack->r_ctl.crte != NULL) {  in rack_output()
22396 				tcp_trace_point(rack->rc_tp, TCP_TP_HWENOBUF);  in rack_output()
22397 				if (tcp_bblogging_on(rack->rc_tp))  in rack_output()
22400 				tcp_trace_point(rack->rc_tp, TCP_TP_ENOBUF);  in rack_output()
22401 			slot = ((1 + rack->rc_enobuf) * HPTS_USEC_IN_MSEC);  in rack_output()
22402 			if (rack->rc_enobuf < 0x7f)  in rack_output()
22403 				rack->rc_enobuf++;  in rack_output()
22406 			if (rack->r_ctl.crte != NULL) {  in rack_output()
22408 				tcp_rl_log_enobuf(rack->r_ctl.crte);  in rack_output()
22422 				tp->t_flags &= ~TF_TSO;  in rack_output()
22426 				saved_mtu = tp->t_maxseg;  in rack_output()
22427 				tcp_mss_update(tp, -1, mtu, NULL, NULL);  in rack_output()
22428 				if (saved_mtu > tp->t_maxseg) {  in rack_output()
22436 			if (tp->t_flags2 & TF2_TCP_ACCOUNTING) {  in rack_output()
22437 				tp->tcp_cnt_counters[SND_OUT_FAIL]++;  in rack_output()
22439 			if (tp->t_flags2 & TF2_TCP_ACCOUNTING) {  in rack_output()
22440 				tp->tcp_proc_time[SND_OUT_FAIL] += (crtsc - ts_val);  in rack_output()
22450 			if (TCPS_HAVERCVDSYN(tp->t_state)) {  in rack_output()
22451 				tp->t_softerror = error;  in rack_output()
22460 			if (tp->t_flags2 & TF2_TCP_ACCOUNTING) {  in rack_output()
22461 				tp->tcp_cnt_counters[SND_OUT_FAIL]++;  in rack_output()
22463 			if (tp->t_flags2 & TF2_TCP_ACCOUNTING) {  in rack_output()
22464 				tp->tcp_proc_time[SND_OUT_FAIL] += (crtsc - ts_val);  in rack_output()
22471 		rack->rc_enobuf = 0;  in rack_output()
22472 		if (IN_FASTRECOVERY(tp->t_flags) && rsm)  in rack_output()
22473 			rack->r_ctl.retran_during_recovery += len;  in rack_output()
22482 	if (recwin > 0 && SEQ_GT(tp->rcv_nxt + recwin, tp->rcv_adv))  in rack_output()
22483 		tp->rcv_adv = tp->rcv_nxt + recwin;  in rack_output()
22485 	tp->last_ack_sent = tp->rcv_nxt;  in rack_output()
22486 	tp->t_flags &= ~(TF_ACKNOW | TF_DELACK);  in rack_output()
22516 	rack->r_ent_rec_ns = 0;  in rack_output()
22517 	if (rack->r_must_retran) {  in rack_output()
22519 			rack->r_ctl.rc_out_at_rto -= (rsm->r_end - rsm->r_start);  in rack_output()
22520 			if (SEQ_GEQ(rsm->r_end, rack->r_ctl.rc_snd_max_at_rto)) {  in rack_output()
22524 				rack->r_must_retran = 0;  in rack_output()
22525 				rack->r_ctl.rc_out_at_rto = 0;  in rack_output()
22527 		} else if (SEQ_GEQ(tp->snd_max, rack->r_ctl.rc_snd_max_at_rto)) {  in rack_output()
22532 			rack->r_must_retran = 0;  in rack_output()
22533 			rack->r_ctl.rc_out_at_rto = 0;  in rack_output()
22536 	rack->r_ctl.fsb.recwin = recwin;  in rack_output()
22537 	if ((tp->t_flags & (TF_WASCRECOVERY|TF_WASFRECOVERY)) &&  in rack_output()
22538 	    SEQ_GT(tp->snd_max, rack->r_ctl.rc_snd_max_at_rto)) {  in rack_output()
22543 		tp->t_flags &= ~(TF_WASCRECOVERY|TF_WASFRECOVERY);  in rack_output()
22552 		    rack->r_fsb_inited &&  in rack_output()
22553 		    TCPS_HAVEESTABLISHED(tp->t_state) &&  in rack_output()
22554 		    ((IN_RECOVERY(tp->t_flags)) == 0) &&  in rack_output()
22555 		    (rack->r_must_retran == 0) &&  in rack_output()
22556 		    ((tp->t_flags & TF_NEEDFIN) == 0) &&  in rack_output()
22559 		    ((orig_len - len) >= segsiz) &&  in rack_output()
22566 			rack->r_fast_output = 0;  in rack_output()
22579 		    (rack->r_must_retran == 0) &&  in rack_output()
22580 		    rack->r_fsb_inited &&  in rack_output()
22581 		    TCPS_HAVEESTABLISHED(tp->t_state) &&  in rack_output()
22582 		    ((IN_RECOVERY(tp->t_flags)) == 0) &&  in rack_output()
22583 		    ((tp->t_flags & TF_NEEDFIN) == 0) &&  in rack_output()
22586 		    ((orig_len - len) >= segsiz) &&  in rack_output()
22592 			if (rack->r_fast_output) {  in rack_output()
22606 	if (SEQ_GT(tp->snd_max, tp->snd_nxt))  in rack_output()
22607 		tp->snd_nxt = tp->snd_max;  in rack_output()
22610 	crtsc = get_cyclecount() - ts_val;  in rack_output()
22612 		if (tp->t_flags2 & TF2_TCP_ACCOUNTING) {  in rack_output()
22613 			tp->tcp_cnt_counters[SND_OUT_DATA]++;  in rack_output()
22615 		if (tp->t_flags2 & TF2_TCP_ACCOUNTING) {  in rack_output()
22616 			tp->tcp_proc_time[SND_OUT_DATA] += crtsc;  in rack_output()
22618 		if (tp->t_flags2 & TF2_TCP_ACCOUNTING) {  in rack_output()
22619 			tp->tcp_cnt_counters[CNT_OF_MSS_OUT] += ((tot_len_this_send + segsiz - 1) /segsiz);  in rack_output()
22622 		if (tp->t_flags2 & TF2_TCP_ACCOUNTING) {  in rack_output()
22623 			tp->tcp_cnt_counters[SND_OUT_ACK]++;  in rack_output()
22625 		if (tp->t_flags2 & TF2_TCP_ACCOUNTING) {  in rack_output()
22626 			tp->tcp_proc_time[SND_OUT_ACK] += crtsc;  in rack_output()
22641 	orig_val = rack->r_ctl.rc_pace_max_segs;  in rack_update_seg()
22642 	rack_set_pace_segments(rack->rc_tp, rack, __LINE__, NULL);  in rack_update_seg()
22643 	if (orig_val != rack->r_ctl.rc_pace_max_segs)  in rack_update_seg()
22656 	rack = (struct tcp_rack *)tp->t_fb_ptr;  in rack_mtu_change()
22657 	if (rack->r_ctl.rc_pace_min_segs != ctf_fixed_maxseg(tp)) {  in rack_mtu_change()
22666 		rack->r_fast_output = 0;  in rack_mtu_change()
22667 		rack->r_ctl.rc_out_at_rto = ctf_flight_size(tp,  in rack_mtu_change()
22668 						rack->r_ctl.rc_sacked);  in rack_mtu_change()
22669 		rack->r_ctl.rc_snd_max_at_rto = tp->snd_max;  in rack_mtu_change()
22670 		rack->r_must_retran = 1;  in rack_mtu_change()
22672 		TAILQ_FOREACH(rsm, &rack->r_ctl.rc_tmap, r_tnext) {  in rack_mtu_change()
22673 			rsm->r_flags |= (RACK_MUST_RXT|RACK_PMTU_CHG);  in rack_mtu_change()
22676 	sack_filter_clear(&rack->r_ctl.rack_sf, tp->snd_una);  in rack_mtu_change()
22678 	tp->snd_nxt = tp->snd_max;  in rack_mtu_change()
22684 	if (rack->dgp_on == 1)  in rack_set_dgp()
22686 	if ((rack->use_fixed_rate == 1) &&  in rack_set_dgp()
22687 	    (rack->rc_always_pace == 1)) {  in rack_set_dgp()
22694 	if (rack->rc_always_pace == 1) {  in rack_set_dgp()
22699 	rack->r_ctl.pacing_method |= RACK_DGP_PACING;  in rack_set_dgp()
22700 	rack->rc_fillcw_apply_discount = 0;  in rack_set_dgp()
22701 	rack->dgp_on = 1;  in rack_set_dgp()
22702 	rack->rc_always_pace = 1;  in rack_set_dgp()
22703 	rack->rc_pace_dnd = 1;  in rack_set_dgp()
22704 	rack->use_fixed_rate = 0;  in rack_set_dgp()
22705 	if (rack->gp_ready)  in rack_set_dgp()
22707 	rack->rc_tp->t_flags2 |= TF2_SUPPORTS_MBUFQ;  in rack_set_dgp()
22708 	rack->rack_attempt_hdwr_pace = 0;  in rack_set_dgp()
22710 	rack->full_size_rxt = 1;  in rack_set_dgp()
22711 	rack->shape_rxt_to_pacing_min  = 0;  in rack_set_dgp()
22713 	rack->r_use_cmp_ack = 1;  in rack_set_dgp()
22714 	if (TCPS_HAVEESTABLISHED(rack->rc_tp->t_state) &&  in rack_set_dgp()
22715 	    rack->r_use_cmp_ack)  in rack_set_dgp()
22716 		rack->rc_tp->t_flags2 |= TF2_MBUF_ACKCMP;  in rack_set_dgp()
22718 	rack->rack_enable_scwnd = 1;  in rack_set_dgp()
22720 	rack->rc_gp_dyn_mul = 1;  in rack_set_dgp()
22722 	rack->r_ctl.rack_per_of_gp_ca = 100;  in rack_set_dgp()
22724 	rack->r_rr_config = 3;  in rack_set_dgp()
22726 	rack->r_ctl.rc_no_push_at_mrtt = 2;  in rack_set_dgp()
22728 	rack->rc_pace_to_cwnd = 1;  in rack_set_dgp()
22729 	rack->rc_pace_fill_if_rttin_range = 0;  in rack_set_dgp()
22730 	rack->rtt_limit_mul = 0;  in rack_set_dgp()
22732 	rack->rack_no_prr = 1;  in rack_set_dgp()
22734 	rack->r_limit_scw = 1;  in rack_set_dgp()
22736 	rack->r_ctl.rack_per_of_gp_rec = 90;  in rack_set_dgp()
22758 		 * fill-cw the same settings that profile5 does  in rack_set_profile()
22759 		 * to replace DGP. It gets then the max(dgp-rate, fillcw(discounted).  in rack_set_profile()
22761 		rack->rc_fillcw_apply_discount = 1;  in rack_set_profile()
22764 		if (rack->rc_always_pace == 1) {  in rack_set_profile()
22768 			rack->dgp_on = 0;  in rack_set_profile()
22769 			rack->rc_hybrid_mode = 0;  in rack_set_profile()
22770 			rack->use_fixed_rate = 0;  in rack_set_profile()
22774 			rack->rc_pace_to_cwnd = 1;  in rack_set_profile()
22776 			rack->rc_pace_to_cwnd = 0;  in rack_set_profile()
22779 			rack->r_ctl.pacing_method |= RACK_REG_PACING;  in rack_set_profile()
22780 			rack->rc_always_pace = 1;  in rack_set_profile()
22781 			if (rack->rack_hibeta)  in rack_set_profile()
22784 			rack->rc_always_pace = 0;  in rack_set_profile()
22787 			rack->rc_rack_tmr_std_based = 1;  in rack_set_profile()
22791 			rack->rc_rack_use_dsack = 1;  in rack_set_profile()
22794 			rack->r_use_cmp_ack = 1;  in rack_set_profile()
22796 			rack->r_use_cmp_ack = 0;  in rack_set_profile()
22798 			rack->rack_no_prr = 1;  in rack_set_profile()
22800 			rack->rack_no_prr = 0;  in rack_set_profile()
22802 			rack->rc_gp_no_rec_chg = 1;  in rack_set_profile()
22804 			rack->rc_gp_no_rec_chg = 0;  in rack_set_profile()
22805 		if (rack_enable_mqueue_for_nonpaced || rack->r_use_cmp_ack) {  in rack_set_profile()
22806 			rack->r_mbuf_queue = 1;  in rack_set_profile()
22807 			if (TCPS_HAVEESTABLISHED(rack->rc_tp->t_state))  in rack_set_profile()
22808 				rack->rc_tp->t_flags2 |= TF2_MBUF_ACKCMP;  in rack_set_profile()
22809 			rack->rc_tp->t_flags2 |= TF2_SUPPORTS_MBUFQ;  in rack_set_profile()
22811 			rack->r_mbuf_queue = 0;  in rack_set_profile()
22812 			rack->rc_tp->t_flags2 &= ~TF2_SUPPORTS_MBUFQ;  in rack_set_profile()
22815 			rack->rack_enable_scwnd = 1;  in rack_set_profile()
22817 			rack->rack_enable_scwnd = 0;  in rack_set_profile()
22820 			rack->rc_gp_dyn_mul = 1;  in rack_set_profile()
22822 				rack->r_ctl.rack_per_of_gp_ca = rack_do_dyn_mul;  in rack_set_profile()
22824 			rack->r_ctl.rack_per_of_gp_ca = rack_per_of_gp_ca;  in rack_set_profile()
22825 			rack->rc_gp_dyn_mul = 0;  in rack_set_profile()
22827 		rack->r_rr_config = 0;  in rack_set_profile()
22828 		rack->r_ctl.rc_no_push_at_mrtt = 0;  in rack_set_profile()
22829 		rack->rc_pace_fill_if_rttin_range = 0;  in rack_set_profile()
22830 		rack->rtt_limit_mul = 0;  in rack_set_profile()
22833 			rack->rack_hdw_pace_ena = 1;  in rack_set_profile()
22835 			rack->rack_hdw_pace_ena = 0;  in rack_set_profile()
22837 			rack->rack_no_prr = 1;  in rack_set_profile()
22839 			rack->rack_no_prr = 0;  in rack_set_profile()
22841 			rack->r_limit_scw  = 1;  in rack_set_profile()
22843 			rack->r_limit_scw  = 0;  in rack_set_profile()
22859 		 * No space yikes -- fail out..  in rack_add_deferred_option()
22863 	dol->optname = sopt_name;  in rack_add_deferred_option()
22864 	dol->optval = loptval;  in rack_add_deferred_option()
22865 	TAILQ_INSERT_TAIL(&rack->r_ctl.opt_list, dol, next);  in rack_add_deferred_option()
22881 	rack->use_fixed_rate = 0;  in process_hybrid_pacing()
22882 	rack->r_ctl.rc_fixed_pacing_rate_rec = 0;  in process_hybrid_pacing()
22883 	rack->r_ctl.rc_fixed_pacing_rate_ca = 0;  in process_hybrid_pacing()
22884 	rack->r_ctl.rc_fixed_pacing_rate_ss = 0;  in process_hybrid_pacing()
22886 	sft = tcp_req_alloc_req_full(rack->rc_tp, &hybrid->req, tcp_tv_to_lusectick(&tv), 0);  in process_hybrid_pacing()
22888 		rack->rc_tp->tcp_hybrid_error++;  in process_hybrid_pacing()
22889 		/* no space, where would it have gone? */  in process_hybrid_pacing()
22890 		seq = rack->rc_tp->snd_una + rack->rc_tp->t_inpcb.inp_socket->so_snd.sb_ccc;  in process_hybrid_pacing()
22895 	hybrid->hybrid_flags &= TCP_HYBRID_PACING_USER_MASK;  in process_hybrid_pacing()
22897 	seq = sft->start_seq;  in process_hybrid_pacing()
22898 	if ((hybrid->hybrid_flags & TCP_HYBRID_PACING_ENABLE) == 0) {  in process_hybrid_pacing()
22900 		if (rack->rc_hybrid_mode) {  in process_hybrid_pacing()
22902 			rack->rc_tp->tcp_hybrid_stop++;  in process_hybrid_pacing()
22907 	if (rack->dgp_on == 0) {  in process_hybrid_pacing()
22915 			rack->rc_tp->tcp_hybrid_error++;  in process_hybrid_pacing()
22924 	if (rack->rc_hybrid_mode == 0) {  in process_hybrid_pacing()
22927 			rack->r_ctl.pacing_method |= RACK_REG_PACING;  in process_hybrid_pacing()
22928 			rack->rc_hybrid_mode = 1;  in process_hybrid_pacing()
22932 		if (rack->r_ctl.pacing_method & RACK_DGP_PACING) {  in process_hybrid_pacing()
22937 			rack->r_ctl.pacing_method &= ~RACK_DGP_PACING;  in process_hybrid_pacing()
22941 	sft->hybrid_flags = hybrid->hybrid_flags | TCP_HYBRID_PACING_WASSET;  in process_hybrid_pacing()
22942 	if (hybrid->hybrid_flags & TCP_HYBRID_PACING_CSPR)  in process_hybrid_pacing()
22943 		sft->cspr = hybrid->cspr;  in process_hybrid_pacing()
22945 		sft->cspr = 0;  in process_hybrid_pacing()
22946 	if (hybrid->hybrid_flags & TCP_HYBRID_PACING_H_MS)  in process_hybrid_pacing()
22947 		sft->hint_maxseg = hybrid->hint_maxseg;  in process_hybrid_pacing()
22949 		sft->hint_maxseg = 0;  in process_hybrid_pacing()
22950 	rack->rc_tp->tcp_hybrid_start++;  in process_hybrid_pacing()
22962 	si->bytes_transmitted = tp->t_sndbytes;  in rack_stack_information()
22963 	si->bytes_retransmitted = tp->t_snd_rxt_bytes;  in rack_stack_information()
22994 			rack->rc_rack_tmr_std_based = 1;  in rack_process_option()
22996 			rack->rc_rack_tmr_std_based = 0;  in rack_process_option()
22999 			rack->rc_rack_use_dsack = 1;  in rack_process_option()
23001 			rack->rc_rack_use_dsack = 0;  in rack_process_option()
23008 			rack->r_ctl.pace_len_divisor = rack_default_pacing_divisor;  in rack_process_option()
23011 				rack->r_ctl.pace_len_divisor = RL_MIN_DIVISOR;  in rack_process_option()
23013 				rack->r_ctl.pace_len_divisor = optval;  in rack_process_option()
23019 			rack->rack_hibeta = 1;  in rack_process_option()
23025 				rack->r_ctl.saved_hibeta = optval;  in rack_process_option()
23026 				if (rack->rc_pacing_cc_set)  in rack_process_option()
23028 				rack->r_ctl.rc_saved_beta.beta = optval;  in rack_process_option()
23030 			if (rack->rc_pacing_cc_set == 0)  in rack_process_option()
23033 			rack->rack_hibeta = 0;  in rack_process_option()
23034 			if (rack->rc_pacing_cc_set)  in rack_process_option()
23043 		rack->r_ctl.timer_slop = optval;  in rack_process_option()
23044 		if (rack->rc_tp->t_srtt) {  in rack_process_option()
23049 			RACK_TCPT_RANGESET(tp->t_rxtcur, RACK_REXMTVAL(tp),  in rack_process_option()
23051 					   rack->r_ctl.timer_slop);  in rack_process_option()
23056 		if (strcmp(tp->t_cc->name, CCALGONAME_NEWRENO) != 0) {  in rack_process_option()
23061 		if (rack->rc_pacing_cc_set) {  in rack_process_option()
23070 			if (CC_ALGO(tp)->ctl_output != NULL)  in rack_process_option()
23071 				error = CC_ALGO(tp)->ctl_output(&tp->t_ccv, &sopt, &opt);  in rack_process_option()
23079 			rack->r_ctl.rc_saved_beta.beta_ecn = optval;  in rack_process_option()
23080 			rack->r_ctl.rc_saved_beta.newreno_flags = CC_NEWRENO_BETA_ECN_ENABLED;  in rack_process_option()
23086 			if (rack->gp_ready) {  in rack_process_option()
23091 			rack->defer_options = 1;  in rack_process_option()
23093 			rack->defer_options = 0;  in rack_process_option()
23098 			rack->r_ctl.req_measurements = optval;  in rack_process_option()
23105 			rack->r_use_labc_for_rec = 1;  in rack_process_option()
23107 			rack->r_use_labc_for_rec = 0;  in rack_process_option()
23112 			rack->rc_labc = optval;  in rack_process_option()
23119 			rack->r_up_only = 1;  in rack_process_option()
23121 			rack->r_up_only = 0;  in rack_process_option()
23125 		rack->r_ctl.fillcw_cap = loptval;  in rack_process_option()
23129 		if ((rack->dgp_on == 1) &&  in rack_process_option()
23130 		    (rack->r_ctl.pacing_method & RACK_DGP_PACING)) {  in rack_process_option()
23142 			rack->r_ctl.pacing_method |= RACK_REG_PACING;  in rack_process_option()
23144 			rack->r_ctl.pacing_method &= ~RACK_DGP_PACING;  in rack_process_option()
23146 		rack->r_ctl.bw_rate_cap = loptval;  in rack_process_option()
23153 		if (rack->r_ctl.side_chan_dis_mask & HYBRID_DIS_MASK) {  in rack_process_option()
23161 			rack->r_ctl.side_chan_dis_mask = optval;  in rack_process_option()
23163 			rack->r_ctl.side_chan_dis_mask = 0;  in rack_process_option()
23171 		if ((optval == 0) && (tp->t_flags2 & TF2_MBUF_ACKCMP)) {  in rack_process_option()
23174 		} else if ((optval == 1) && (rack->r_use_cmp_ack == 0)) {  in rack_process_option()
23175 			rack->r_use_cmp_ack = 1;  in rack_process_option()
23176 			rack->r_mbuf_queue = 1;  in rack_process_option()
23177 			tp->t_flags2 |= TF2_SUPPORTS_MBUFQ;  in rack_process_option()
23179 		if (rack->r_use_cmp_ack && TCPS_HAVEESTABLISHED(tp->t_state))  in rack_process_option()
23180 			tp->t_flags2 |= TF2_MBUF_ACKCMP;  in rack_process_option()
23185 			rack->r_limit_scw = 1;  in rack_process_option()
23187 			rack->r_limit_scw = 0;  in rack_process_option()
23195 			rack->rc_pace_to_cwnd = 0;  in rack_process_option()
23197 			rack->rc_pace_to_cwnd = 1;  in rack_process_option()
23202 			rack->rc_pace_fill_if_rttin_range = 1;  in rack_process_option()
23203 			rack->rtt_limit_mul = optval;  in rack_process_option()
23205 			rack->rc_pace_fill_if_rttin_range = 0;  in rack_process_option()
23206 			rack->rtt_limit_mul = 0;  in rack_process_option()
23212 			rack->r_ctl.rc_no_push_at_mrtt = 0;  in rack_process_option()
23214 			rack->r_ctl.rc_no_push_at_mrtt = optval;  in rack_process_option()
23221 			rack->rack_enable_scwnd = 0;  in rack_process_option()
23223 			rack->rack_enable_scwnd = 1;  in rack_process_option()
23226 		/* Now do we use the LRO mbuf-queue feature */  in rack_process_option()
23228 		if (optval || rack->r_use_cmp_ack)  in rack_process_option()
23229 			rack->r_mbuf_queue = 1;  in rack_process_option()
23231 			rack->r_mbuf_queue = 0;  in rack_process_option()
23232 		if  (rack->r_mbuf_queue || rack->rc_always_pace || rack->r_use_cmp_ack)  in rack_process_option()
23233 			tp->t_flags2 |= TF2_SUPPORTS_MBUFQ;  in rack_process_option()
23235 			tp->t_flags2 &= ~TF2_SUPPORTS_MBUFQ;  in rack_process_option()
23240 			rack->rack_rec_nonrxt_use_cr = 0;  in rack_process_option()
23242 			rack->rack_rec_nonrxt_use_cr = 1;  in rack_process_option()
23247 			rack->rack_no_prr = 0;  in rack_process_option()
23249 			rack->rack_no_prr = 1;  in rack_process_option()
23251 			rack->no_prr_addback = 1;  in rack_process_option()
23257 			rack->cspr_is_fcc = 1;  in rack_process_option()
23259 			rack->cspr_is_fcc = 0;  in rack_process_option()
23264 			rack->rc_gp_dyn_mul = 0;  in rack_process_option()
23266 			rack->rc_gp_dyn_mul = 1;  in rack_process_option()
23272 				rack->r_ctl.rack_per_of_gp_ca  = optval;  in rack_process_option()
23285 		rack->rack_tlp_threshold_use = optval;  in rack_process_option()
23290 		rack->r_ctl.rc_tlp_cwnd_reduce = optval;  in rack_process_option()
23299 		if (rack->r_ctl.side_chan_dis_mask & CCSP_DIS_MASK) {  in rack_process_option()
23304 			if (rack->rc_always_pace) {  in rack_process_option()
23308 				rack->r_ctl.pacing_method |= RACK_REG_PACING;  in rack_process_option()
23309 				rack->rc_always_pace = 1;  in rack_process_option()
23310 				if (rack->rack_hibeta)  in rack_process_option()
23318 			if (rack->rc_always_pace == 1) {  in rack_process_option()
23322 		if  (rack->r_mbuf_queue || rack->rc_always_pace || rack->r_use_cmp_ack)  in rack_process_option()
23323 			tp->t_flags2 |= TF2_SUPPORTS_MBUFQ;  in rack_process_option()
23325 			tp->t_flags2 &= ~TF2_SUPPORTS_MBUFQ;  in rack_process_option()
23335 		rack->r_ctl.init_rate = val;  in rack_process_option()
23336 		if (rack->rc_always_pace)  in rack_process_option()
23345 			rack->rc_force_max_seg = 1;  in rack_process_option()
23347 			rack->rc_force_max_seg = 0;  in rack_process_option()
23351 		rack->r_ctl.rc_user_set_min_segs = (0x0000ffff & optval);  in rack_process_option()
23357 		if ((rack->dgp_on == 1) &&  in rack_process_option()
23358 		    (rack->r_ctl.pacing_method & RACK_DGP_PACING)) {  in rack_process_option()
23360 			 * If we set a max-seg and are doing DGP then  in rack_process_option()
23371 			rack->r_ctl.pacing_method |= RACK_REG_PACING;  in rack_process_option()
23373 			rack->r_ctl.pacing_method &= ~RACK_DGP_PACING;  in rack_process_option()
23376 			rack->rc_user_set_max_segs = optval;  in rack_process_option()
23378 			rack->rc_user_set_max_segs = MAX_USER_SET_SEG;  in rack_process_option()
23384 		if (rack->r_ctl.side_chan_dis_mask & CCSP_DIS_MASK) {  in rack_process_option()
23388 		if (rack->dgp_on) {  in rack_process_option()
23396 		rack->r_ctl.rc_fixed_pacing_rate_rec = optval;  in rack_process_option()
23397 		if (rack->r_ctl.rc_fixed_pacing_rate_ca == 0)  in rack_process_option()
23398 			rack->r_ctl.rc_fixed_pacing_rate_ca = optval;  in rack_process_option()
23399 		if (rack->r_ctl.rc_fixed_pacing_rate_ss == 0)  in rack_process_option()
23400 			rack->r_ctl.rc_fixed_pacing_rate_ss = optval;  in rack_process_option()
23401 		rack->use_fixed_rate = 1;  in rack_process_option()
23402 		if (rack->rack_hibeta)  in rack_process_option()
23405 					   rack->r_ctl.rc_fixed_pacing_rate_ss,  in rack_process_option()
23406 					   rack->r_ctl.rc_fixed_pacing_rate_ca,  in rack_process_option()
23407 					   rack->r_ctl.rc_fixed_pacing_rate_rec, 0, 0, 8,  in rack_process_option()
23414 		if (rack->r_ctl.side_chan_dis_mask & CCSP_DIS_MASK) {  in rack_process_option()
23418 		if (rack->dgp_on) {  in rack_process_option()
23426 		rack->r_ctl.rc_fixed_pacing_rate_ss = optval;  in rack_process_option()
23427 		if (rack->r_ctl.rc_fixed_pacing_rate_ca == 0)  in rack_process_option()
23428 			rack->r_ctl.rc_fixed_pacing_rate_ca = optval;  in rack_process_option()
23429 		if (rack->r_ctl.rc_fixed_pacing_rate_rec == 0)  in rack_process_option()
23430 			rack->r_ctl.rc_fixed_pacing_rate_rec = optval;  in rack_process_option()
23431 		rack->use_fixed_rate = 1;  in rack_process_option()
23432 		if (rack->rack_hibeta)  in rack_process_option()
23435 					   rack->r_ctl.rc_fixed_pacing_rate_ss,  in rack_process_option()
23436 					   rack->r_ctl.rc_fixed_pacing_rate_ca,  in rack_process_option()
23437 					   rack->r_ctl.rc_fixed_pacing_rate_rec, 0, 0, 8,  in rack_process_option()
23444 		if (rack->r_ctl.side_chan_dis_mask & CCSP_DIS_MASK) {  in rack_process_option()
23448 		if (rack->dgp_on) {  in rack_process_option()
23456 		rack->r_ctl.rc_fixed_pacing_rate_ca = optval;  in rack_process_option()
23457 		if (rack->r_ctl.rc_fixed_pacing_rate_ss == 0)  in rack_process_option()
23458 			rack->r_ctl.rc_fixed_pacing_rate_ss = optval;  in rack_process_option()
23459 		if (rack->r_ctl.rc_fixed_pacing_rate_rec == 0)  in rack_process_option()
23460 			rack->r_ctl.rc_fixed_pacing_rate_rec = optval;  in rack_process_option()
23461 		rack->use_fixed_rate = 1;  in rack_process_option()
23462 		if (rack->rack_hibeta)  in rack_process_option()
23465 					   rack->r_ctl.rc_fixed_pacing_rate_ss,  in rack_process_option()
23466 					   rack->r_ctl.rc_fixed_pacing_rate_ca,  in rack_process_option()
23467 					   rack->r_ctl.rc_fixed_pacing_rate_rec, 0, 0, 8,  in rack_process_option()
23472 		rack->r_ctl.rack_per_of_gp_rec = optval;  in rack_process_option()
23474 					   rack->r_ctl.rack_per_of_gp_ss,  in rack_process_option()
23475 					   rack->r_ctl.rack_per_of_gp_ca,  in rack_process_option()
23476 					   rack->r_ctl.rack_per_of_gp_rec, 0, 0, 1,  in rack_process_option()
23490 		rack->r_ctl.rack_per_of_gp_ca = ca;  in rack_process_option()
23492 					   rack->r_ctl.rack_per_of_gp_ss,  in rack_process_option()
23493 					   rack->r_ctl.rack_per_of_gp_ca,  in rack_process_option()
23494 					   rack->r_ctl.rack_per_of_gp_rec, 0, 0, 1,  in rack_process_option()
23508 		rack->r_ctl.rack_per_of_gp_ss = ss;  in rack_process_option()
23510 					   rack->r_ctl.rack_per_of_gp_ss,  in rack_process_option()
23511 					   rack->r_ctl.rack_per_of_gp_ca,  in rack_process_option()
23512 					   rack->r_ctl.rack_per_of_gp_rec, 0, 0, 1,  in rack_process_option()
23518 			rack->r_rr_config = optval;  in rack_process_option()
23520 			rack->r_rr_config = 0;  in rack_process_option()
23524 			rack->rc_pace_dnd = 1;  in rack_process_option()
23526 			rack->rc_pace_dnd = 0;  in rack_process_option()
23531 			if (rack->r_rack_hw_rate_caps == 0)  in rack_process_option()
23532 				rack->r_rack_hw_rate_caps = 1;  in rack_process_option()
23536 			rack->r_rack_hw_rate_caps = 0;  in rack_process_option()
23543 		rack->r_ctl.rack_per_upper_bound_ca = val;  in rack_process_option()
23545 		rack->r_ctl.rack_per_upper_bound_ss = val;  in rack_process_option()
23550 			rack->r_ctl.gp_rnd_thresh =  optval & 0x0ff;  in rack_process_option()
23552 				rack->r_ctl.gate_to_fs = 1;  in rack_process_option()
23554 				rack->r_ctl.gate_to_fs = 0;  in rack_process_option()
23557 				rack->r_ctl.use_gp_not_last = 1;  in rack_process_option()
23559 				rack->r_ctl.use_gp_not_last = 0;  in rack_process_option()
23566 					rack->r_ctl.gp_gain_req = v;  in rack_process_option()
23570 			rack->rc_initial_ss_comp = 1;  in rack_process_option()
23571 			rack->r_ctl.gp_rnd_thresh = 0;  in rack_process_option()
23576 		rack->r_ctl.rc_split_limit = optval;  in rack_process_option()
23581 			if (rack->rack_hdrw_pacing == 0) {  in rack_process_option()
23582 				rack->rack_hdw_pace_ena = 1;  in rack_process_option()
23583 				rack->rack_attempt_hdwr_pace = 0;  in rack_process_option()
23587 			rack->rack_hdw_pace_ena = 0;  in rack_process_option()
23589 			if (rack->r_ctl.crte != NULL) {  in rack_process_option()
23590 				rack->rack_hdrw_pacing = 0;  in rack_process_option()
23591 				rack->rack_attempt_hdwr_pace = 0;  in rack_process_option()
23592 				tcp_rel_pacing_rate(rack->r_ctl.crte, tp);  in rack_process_option()
23593 				rack->r_ctl.crte = NULL;  in rack_process_option()
23602 		rack->r_ctl.rc_prr_sendalot = optval;  in rack_process_option()
23605 		/* Minimum time between rack t-o's in ms */  in rack_process_option()
23607 		rack->r_ctl.rc_min_to = optval;  in rack_process_option()
23612 		rack->r_ctl.rc_early_recovery_segs = optval;  in rack_process_option()
23617 			tp->t_ccv.flags |= CCF_HYSTART_ALLOWED;  in rack_process_option()
23619 				tp->t_ccv.flags |= CCF_HYSTART_CAN_SH_CWND;  in rack_process_option()
23621 				tp->t_ccv.flags |= CCF_HYSTART_CONS_SSTH;  in rack_process_option()
23623 			tp->t_ccv.flags &= ~(CCF_HYSTART_ALLOWED|CCF_HYSTART_CAN_SH_CWND|CCF_HYSTART_CONS_SSTH);  in rack_process_option()
23631 			rack->r_ctl.rc_reorder_shift = optval;  in rack_process_option()
23638 		rack->r_ctl.rc_reorder_fade = optval;  in rack_process_option()
23644 			rack->r_ctl.rc_tlp_threshold = optval;  in rack_process_option()
23651 			rack->use_rack_rr = 1;  in rack_process_option()
23653 			rack->use_rack_rr = 0;  in rack_process_option()
23656 		/* RACK added ms i.e. rack-rtt + reord + N */  in rack_process_option()
23658 		rack->r_ctl.rc_pkt_delay = optval;  in rack_process_option()
23663 			tp->t_delayed_ack = 0;  in rack_process_option()
23665 			tp->t_delayed_ack = 1;  in rack_process_option()
23666 		if (tp->t_flags & TF_DELACK) {  in rack_process_option()
23667 			tp->t_flags &= ~TF_DELACK;  in rack_process_option()
23668 			tp->t_flags |= TF_ACKNOW;  in rack_process_option()
23682 			rack->r_ctl.rc_rate_sample_method = optval;  in rack_process_option()
23687 			rack->r_use_hpts_min = 1;  in rack_process_option()
23689 			 * Must be between 2 - 80% to be a reduction else  in rack_process_option()
23693 				rack->r_ctl.max_reduction = optval;  in rack_process_option()
23696 			rack->r_use_hpts_min = 0;  in rack_process_option()
23701 			rack->rc_gp_no_rec_chg = 1;  in rack_process_option()
23703 			rack->rc_gp_no_rec_chg = 0;  in rack_process_option()
23708 			rack->rc_skip_timely = 1;  in rack_process_option()
23709 			rack->r_ctl.rack_per_of_gp_rec = 90;  in rack_process_option()
23710 			rack->r_ctl.rack_per_of_gp_ca = 100;  in rack_process_option()
23711 			rack->r_ctl.rack_per_of_gp_ss = 250;  in rack_process_option()
23713 			rack->rc_skip_timely = 0;  in rack_process_option()
23718 			rack->use_lesser_lt_bw = 0;  in rack_process_option()
23719 			rack->dis_lt_bw = 1;  in rack_process_option()
23721 			rack->use_lesser_lt_bw = 1;  in rack_process_option()
23722 			rack->dis_lt_bw = 0;  in rack_process_option()
23724 			rack->use_lesser_lt_bw = 0;  in rack_process_option()
23725 			rack->dis_lt_bw = 0;  in rack_process_option()
23731 			rack->rc_allow_data_af_clo = 1;  in rack_process_option()
23733 			rack->rc_allow_data_af_clo = 0;  in rack_process_option()
23748 	 * apply a read-lock to the parent (we are already  in rack_inherit()
23759 	if (par->t_fb != tp->t_fb) {  in rack_inherit()
23765 	dest = (struct tcp_rack *)tp->t_fb_ptr;  in rack_inherit()
23766 	src = (struct tcp_rack *)par->t_fb_ptr;  in rack_inherit()
23772 	/* Now copy out anything we wish to inherit i.e. things in socket-options */  in rack_inherit()
23774 	if ((src->dgp_on) && (dest->dgp_on == 0)) {  in rack_inherit()
23780 	if (dest->full_size_rxt != src->full_size_rxt) {  in rack_inherit()
23781 		dest->full_size_rxt = src->full_size_rxt;  in rack_inherit()
23784 	if (dest->shape_rxt_to_pacing_min  != src->shape_rxt_to_pacing_min) {  in rack_inherit()
23785 		dest->shape_rxt_to_pacing_min = src->shape_rxt_to_pacing_min;  in rack_inherit()
23789 	if (dest->rc_rack_tmr_std_based != src->rc_rack_tmr_std_based) {  in rack_inherit()
23790 		dest->rc_rack_tmr_std_based = src->rc_rack_tmr_std_based;  in rack_inherit()
23793 	if (dest->rc_rack_use_dsack != src->rc_rack_use_dsack) {  in rack_inherit()
23794 		dest->rc_rack_use_dsack = src->rc_rack_use_dsack;  in rack_inherit()
23798 	if (dest->r_ctl.pace_len_divisor != src->r_ctl.pace_len_divisor) {  in rack_inherit()
23799 		dest->r_ctl.pace_len_divisor = src->r_ctl.pace_len_divisor;  in rack_inherit()
23803 	if (src->rack_hibeta != dest->rack_hibeta) {  in rack_inherit()
23805 		if (src->rack_hibeta) {  in rack_inherit()
23806 			dest->r_ctl.rc_saved_beta.beta = src->r_ctl.rc_saved_beta.beta;  in rack_inherit()
23807 			dest->rack_hibeta = 1;  in rack_inherit()
23809 			dest->rack_hibeta = 0;  in rack_inherit()
23813 	if (dest->r_ctl.timer_slop != src->r_ctl.timer_slop) {  in rack_inherit()
23814 		dest->r_ctl.timer_slop = src->r_ctl.timer_slop;  in rack_inherit()
23818 	if (dest->r_ctl.rc_saved_beta.beta_ecn != src->r_ctl.rc_saved_beta.beta_ecn) {  in rack_inherit()
23819 		dest->r_ctl.rc_saved_beta.beta_ecn = src->r_ctl.rc_saved_beta.beta_ecn;  in rack_inherit()
23822 	if (dest->r_ctl.rc_saved_beta.newreno_flags != src->r_ctl.rc_saved_beta.newreno_flags) {  in rack_inherit()
23823 		dest->r_ctl.rc_saved_beta.newreno_flags = src->r_ctl.rc_saved_beta.newreno_flags;  in rack_inherit()
23828 	if (dest->r_ctl.req_measurements != src->r_ctl.req_measurements) {  in rack_inherit()
23829 		dest->r_ctl.req_measurements = src->r_ctl.req_measurements;  in rack_inherit()
23833 	if (dest->r_up_only != src->r_up_only) {  in rack_inherit()
23834 		dest->r_up_only = src->r_up_only;  in rack_inherit()
23838 	if (dest->r_ctl.fillcw_cap != src->r_ctl.fillcw_cap) {  in rack_inherit()
23839 		dest->r_ctl.fillcw_cap = src->r_ctl.fillcw_cap;  in rack_inherit()
23843 	if (dest->r_ctl.bw_rate_cap != src->r_ctl.bw_rate_cap) {  in rack_inherit()
23844 		dest->r_ctl.bw_rate_cap = src->r_ctl.bw_rate_cap;  in rack_inherit()
23849 	if (dest->r_ctl.side_chan_dis_mask != src->r_ctl.side_chan_dis_mask) {  in rack_inherit()
23850 		dest->r_ctl.side_chan_dis_mask = src->r_ctl.side_chan_dis_mask;  in rack_inherit()
23854 	if (dest->r_limit_scw != src->r_limit_scw) {  in rack_inherit()
23855 		dest->r_limit_scw = src->r_limit_scw;  in rack_inherit()
23859 	if (dest->rc_pace_to_cwnd != src->rc_pace_to_cwnd) {  in rack_inherit()
23860 		dest->rc_pace_to_cwnd = src->rc_pace_to_cwnd;  in rack_inherit()
23863 	if (dest->rc_pace_fill_if_rttin_range != src->rc_pace_fill_if_rttin_range) {  in rack_inherit()
23864 		dest->rc_pace_fill_if_rttin_range = src->rc_pace_fill_if_rttin_range;  in rack_inherit()
23867 	if (dest->rtt_limit_mul != src->rtt_limit_mul) {  in rack_inherit()
23868 		dest->rtt_limit_mul = src->rtt_limit_mul;  in rack_inherit()
23872 	if (dest->r_ctl.rc_no_push_at_mrtt != src->r_ctl.rc_no_push_at_mrtt) {  in rack_inherit()
23873 		dest->r_ctl.rc_no_push_at_mrtt = src->r_ctl.rc_no_push_at_mrtt;  in rack_inherit()
23877 	if (dest->rack_enable_scwnd != src->rack_enable_scwnd) {  in rack_inherit()
23878 		dest->rack_enable_scwnd = src->rack_enable_scwnd;  in rack_inherit()
23882 	if (dest->r_use_cmp_ack != src->r_use_cmp_ack) {  in rack_inherit()
23883 		dest->r_use_cmp_ack = src->r_use_cmp_ack;  in rack_inherit()
23887 	if (dest->r_mbuf_queue != src->r_mbuf_queue) {  in rack_inherit()
23888 		dest->r_mbuf_queue = src->r_mbuf_queue;  in rack_inherit()
23892 	if (dest->r_mbuf_queue != src->r_mbuf_queue) {  in rack_inherit()
23893 		dest->r_mbuf_queue = src->r_mbuf_queue;  in rack_inherit()
23896 	if  (dest->r_mbuf_queue || dest->rc_always_pace || dest->r_use_cmp_ack) {  in rack_inherit()
23897 		tp->t_flags2 |= TF2_SUPPORTS_MBUFQ;  in rack_inherit()
23899 		tp->t_flags2 &= ~TF2_SUPPORTS_MBUFQ;  in rack_inherit()
23901 	if (dest->r_use_cmp_ack && TCPS_HAVEESTABLISHED(tp->t_state)) {  in rack_inherit()
23902 		tp->t_flags2 |= TF2_MBUF_ACKCMP;  in rack_inherit()
23905 	if (dest->rack_rec_nonrxt_use_cr != src->rack_rec_nonrxt_use_cr) {  in rack_inherit()
23906 		dest->rack_rec_nonrxt_use_cr = src->rack_rec_nonrxt_use_cr;  in rack_inherit()
23910 	if (dest->rack_no_prr != src->rack_no_prr) {  in rack_inherit()
23911 		dest->rack_no_prr = src->rack_no_prr;  in rack_inherit()
23914 	if (dest->no_prr_addback != src->no_prr_addback) {  in rack_inherit()
23915 		dest->no_prr_addback = src->no_prr_addback;  in rack_inherit()
23919 	if (dest->cspr_is_fcc != src->cspr_is_fcc) {  in rack_inherit()
23920 		dest->cspr_is_fcc = src->cspr_is_fcc;  in rack_inherit()
23924 	if (dest->rc_gp_dyn_mul != src->rc_gp_dyn_mul) {  in rack_inherit()
23925 		dest->rc_gp_dyn_mul = src->rc_gp_dyn_mul;  in rack_inherit()
23928 	if (dest->r_ctl.rack_per_of_gp_ca != src->r_ctl.rack_per_of_gp_ca) {  in rack_inherit()
23929 		dest->r_ctl.rack_per_of_gp_ca = src->r_ctl.rack_per_of_gp_ca;  in rack_inherit()
23933 	if (dest->rack_tlp_threshold_use != src->rack_tlp_threshold_use) {  in rack_inherit()
23934 		dest->rack_tlp_threshold_use = src->rack_tlp_threshold_use;  in rack_inherit()
23939 	if (dest->r_ctl.init_rate != src->r_ctl.init_rate) {  in rack_inherit()
23940 		dest->r_ctl.init_rate = src->r_ctl.init_rate;  in rack_inherit()
23944 	if (dest->rc_force_max_seg != src->rc_force_max_seg) {  in rack_inherit()
23945 		dest->rc_force_max_seg = src->rc_force_max_seg;  in rack_inherit()
23949 	if (dest->r_ctl.rc_user_set_min_segs != src->r_ctl.rc_user_set_min_segs) {  in rack_inherit()
23950 		dest->r_ctl.rc_user_set_min_segs = src->r_ctl.rc_user_set_min_segs;  in rack_inherit()
23955 	if (dest->r_ctl.rc_fixed_pacing_rate_ca != src->r_ctl.rc_fixed_pacing_rate_ca) {  in rack_inherit()
23956 		dest->r_ctl.rc_fixed_pacing_rate_ca = src->r_ctl.rc_fixed_pacing_rate_ca;  in rack_inherit()
23959 	if (dest->r_ctl.rc_fixed_pacing_rate_ss != src->r_ctl.rc_fixed_pacing_rate_ss) {  in rack_inherit()
23960 		dest->r_ctl.rc_fixed_pacing_rate_ss = src->r_ctl.rc_fixed_pacing_rate_ss;  in rack_inherit()
23963 	if (dest->r_ctl.rc_fixed_pacing_rate_rec != src->r_ctl.rc_fixed_pacing_rate_rec) {  in rack_inherit()
23964 		dest->r_ctl.rc_fixed_pacing_rate_rec = src->r_ctl.rc_fixed_pacing_rate_rec;  in rack_inherit()
23968 	if (dest->r_ctl.rack_per_of_gp_rec != src->r_ctl.rack_per_of_gp_rec) {  in rack_inherit()
23969 		dest->r_ctl.rack_per_of_gp_rec = src->r_ctl.rack_per_of_gp_rec;  in rack_inherit()
23972 	if (dest->r_ctl.rack_per_of_gp_ca != src->r_ctl.rack_per_of_gp_ca) {  in rack_inherit()
23973 		dest->r_ctl.rack_per_of_gp_ca = src->r_ctl.rack_per_of_gp_ca;  in rack_inherit()
23977 	if (dest->r_ctl.rack_per_of_gp_ss != src->r_ctl.rack_per_of_gp_ss) {  in rack_inherit()
23978 		dest->r_ctl.rack_per_of_gp_ss = src->r_ctl.rack_per_of_gp_ss;  in rack_inherit()
23982 	if (dest->r_rr_config != src->r_rr_config) {  in rack_inherit()
23983 		dest->r_rr_config = src->r_rr_config;  in rack_inherit()
23987 	if (dest->rc_pace_dnd != src->rc_pace_dnd) {  in rack_inherit()
23988 		dest->rc_pace_dnd = src->rc_pace_dnd;  in rack_inherit()
23992 	if (dest->r_rack_hw_rate_caps != src->r_rack_hw_rate_caps) {  in rack_inherit()
23993 		dest->r_rack_hw_rate_caps = src->r_rack_hw_rate_caps;  in rack_inherit()
23997 	if (dest->r_ctl.rack_per_upper_bound_ca != src->r_ctl.rack_per_upper_bound_ca) {  in rack_inherit()
23998 		dest->r_ctl.rack_per_upper_bound_ca = src->r_ctl.rack_per_upper_bound_ca;  in rack_inherit()
24001 	if (dest->r_ctl.rack_per_upper_bound_ss != src->r_ctl.rack_per_upper_bound_ss) {  in rack_inherit()
24002 		dest->r_ctl.rack_per_upper_bound_ss = src->r_ctl.rack_per_upper_bound_ss;  in rack_inherit()
24006 	if (dest->r_ctl.gp_rnd_thresh != src->r_ctl.gp_rnd_thresh) {  in rack_inherit()
24007 		dest->r_ctl.gp_rnd_thresh = src->r_ctl.gp_rnd_thresh;  in rack_inherit()
24010 	if (dest->r_ctl.gate_to_fs != src->r_ctl.gate_to_fs) {  in rack_inherit()
24011 		dest->r_ctl.gate_to_fs = src->r_ctl.gate_to_fs;  in rack_inherit()
24014 	if (dest->r_ctl.use_gp_not_last != src->r_ctl.use_gp_not_last) {  in rack_inherit()
24015 		dest->r_ctl.use_gp_not_last = src->r_ctl.use_gp_not_last;  in rack_inherit()
24018 	if (dest->r_ctl.gp_gain_req != src->r_ctl.gp_gain_req) {  in rack_inherit()
24019 		dest->r_ctl.gp_gain_req = src->r_ctl.gp_gain_req;  in rack_inherit()
24023 	if (dest->rack_hdw_pace_ena != src->rack_hdw_pace_ena) {  in rack_inherit()
24024 		dest->rack_hdw_pace_ena = src->rack_hdw_pace_ena;  in rack_inherit()
24027 	if (dest->rack_attempt_hdwr_pace != src->rack_attempt_hdwr_pace) {  in rack_inherit()
24028 		dest->rack_attempt_hdwr_pace = src->rack_attempt_hdwr_pace;  in rack_inherit()
24032 	if (dest->r_ctl.rc_prr_sendalot != src->r_ctl.rc_prr_sendalot) {  in rack_inherit()
24033 		dest->r_ctl.rc_prr_sendalot = src->r_ctl.rc_prr_sendalot;  in rack_inherit()
24037 	if (dest->r_ctl.rc_min_to != src->r_ctl.rc_min_to) {  in rack_inherit()
24038 		dest->r_ctl.rc_min_to = src->r_ctl.rc_min_to;  in rack_inherit()
24042 	if (dest->r_ctl.rc_early_recovery_segs != src->r_ctl.rc_early_recovery_segs) {  in rack_inherit()
24043 		dest->r_ctl.rc_early_recovery_segs = src->r_ctl.rc_early_recovery_segs;  in rack_inherit()
24047 	if (par->t_ccv.flags != tp->t_ccv.flags) {  in rack_inherit()
24049 		if (par->t_ccv.flags & CCF_HYSTART_ALLOWED) {  in rack_inherit()
24050 			tp->t_ccv.flags |= CCF_HYSTART_ALLOWED;  in rack_inherit()
24052 				tp->t_ccv.flags |= CCF_HYSTART_CAN_SH_CWND;  in rack_inherit()
24054 				tp->t_ccv.flags |= CCF_HYSTART_CONS_SSTH;  in rack_inherit()
24056 			tp->t_ccv.flags &= ~(CCF_HYSTART_ALLOWED|CCF_HYSTART_CAN_SH_CWND|CCF_HYSTART_CONS_SSTH);  in rack_inherit()
24060 	if (dest->r_ctl.rc_reorder_shift != src->r_ctl.rc_reorder_shift) {  in rack_inherit()
24061 		dest->r_ctl.rc_reorder_shift = src->r_ctl.rc_reorder_shift;  in rack_inherit()
24065 	if (dest->r_ctl.rc_reorder_fade != src->r_ctl.rc_reorder_fade) {  in rack_inherit()
24066 		dest->r_ctl.rc_reorder_fade = src->r_ctl.rc_reorder_fade;  in rack_inherit()
24070 	if (dest->r_ctl.rc_tlp_threshold != src->r_ctl.rc_tlp_threshold) {  in rack_inherit()
24071 		dest->r_ctl.rc_tlp_threshold = src->r_ctl.rc_tlp_threshold;  in rack_inherit()
24075 	if (dest->use_rack_rr != src->use_rack_rr) {  in rack_inherit()
24076 		dest->use_rack_rr = src->use_rack_rr;  in rack_inherit()
24080 	if (dest->r_ctl.rc_pkt_delay != src->r_ctl.rc_pkt_delay) {  in rack_inherit()
24081 		dest->r_ctl.rc_pkt_delay = src->r_ctl.rc_pkt_delay;  in rack_inherit()
24086 	if (dest->r_ctl.rc_rate_sample_method != src->r_ctl.rc_rate_sample_method) {  in rack_inherit()
24087 		dest->r_ctl.rc_rate_sample_method = src->r_ctl.rc_rate_sample_method;  in rack_inherit()
24091 	if (dest->r_use_hpts_min != src->r_use_hpts_min) {  in rack_inherit()
24092 		dest->r_use_hpts_min = src->r_use_hpts_min;  in rack_inherit()
24095 	if (dest->r_ctl.max_reduction != src->r_ctl.max_reduction) {  in rack_inherit()
24096 		dest->r_ctl.max_reduction = src->r_ctl.max_reduction;  in rack_inherit()
24100 	if (dest->rc_gp_no_rec_chg != src->rc_gp_no_rec_chg) {  in rack_inherit()
24101 		dest->rc_gp_no_rec_chg = src->rc_gp_no_rec_chg;  in rack_inherit()
24104 	if (dest->rc_skip_timely != src->rc_skip_timely) {  in rack_inherit()
24105 		dest->rc_skip_timely = src->rc_skip_timely;  in rack_inherit()
24109 	if (dest->rc_allow_data_af_clo != src->rc_allow_data_af_clo) {  in rack_inherit()
24110 		dest->rc_allow_data_af_clo = src->rc_allow_data_af_clo;  in rack_inherit()
24114 	if (src->use_lesser_lt_bw != dest->use_lesser_lt_bw) {  in rack_inherit()
24115 		dest->use_lesser_lt_bw = src->use_lesser_lt_bw;  in rack_inherit()
24118 	if (dest->dis_lt_bw != src->dis_lt_bw) {  in rack_inherit()
24119 		dest->dis_lt_bw = src->dis_lt_bw;  in rack_inherit()
24132 	TAILQ_FOREACH_SAFE(dol, &rack->r_ctl.opt_list, next, sdol) {  in rack_apply_deferred_options()
24133 		TAILQ_REMOVE(&rack->r_ctl.opt_list, dol, next);  in rack_apply_deferred_options()
24135 		s_optval = (uint32_t)dol->optval;  in rack_apply_deferred_options()
24136 		(void)rack_process_option(rack->rc_tp, rack, dol->optname, s_optval, dol->optval, NULL);  in rack_apply_deferred_options()
24142 rack_hw_tls_change(struct tcpcb *tp, int chg)  in rack_hw_tls_change()  argument
24147 	rack = (struct tcp_rack *)tp->t_fb_ptr;  in rack_hw_tls_change()
24148 	if (chg)  in rack_hw_tls_change()
24149 		rack->r_ctl.fsb.hw_tls = 1;  in rack_hw_tls_change()
24151 		rack->r_ctl.fsb.hw_tls = 0;  in rack_hw_tls_change()
24169 	rack = (struct tcp_rack *)tp->t_fb_ptr;  in rack_wake_check()
24170 	if (rack->r_ctl.rc_hpts_flags) {  in rack_wake_check()
24172 		if ((rack->r_ctl.rc_hpts_flags & PACE_PKT_OUTPUT) == PACE_PKT_OUTPUT){  in rack_wake_check()
24176 			if (TSTMP_GEQ(cts, rack->r_ctl.rc_last_output_to))  in rack_wake_check()
24178 		} else if ((rack->r_ctl.rc_hpts_flags & PACE_TMR_MASK) != 0) {  in rack_wake_check()
24182 			if (TSTMP_GEQ(cts, rack->r_ctl.rc_timer_exp))  in rack_wake_check()
24216  * socket option arguments.  When it re-acquires the lock after the copy, it
24232 	rack = (struct tcp_rack *)tp->t_fb_ptr;  in rack_set_sockopt()
24238 	ip = (struct ip *)rack->r_ctl.fsb.tcp_ip_hdr;  in rack_set_sockopt()
24241 	switch (sopt->sopt_level) {  in rack_set_sockopt()
24244 		MPASS(inp->inp_vflag & INP_IPV6PROTO);  in rack_set_sockopt()
24245 		switch (sopt->sopt_name) {  in rack_set_sockopt()
24255 		switch (sopt->sopt_name) {  in rack_set_sockopt()
24260 			ip->ip_tos = rack->rc_inp->inp_ip_tos;  in rack_set_sockopt()
24266 			ip->ip_ttl = rack->rc_inp->inp_ip_ttl;  in rack_set_sockopt()
24274 		switch (sopt->sopt_name) {  in rack_set_sockopt()
24275 		case SO_PEERPRIO:			/*  SC-URL:bs */  in rack_set_sockopt()
24277 			if (inp->inp_socket) {  in rack_set_sockopt()
24278 				rack->client_bufferlvl = inp->inp_socket->so_peerprio;  in rack_set_sockopt()
24286 		switch (sopt->sopt_name) {  in rack_set_sockopt()
24303 		case TCP_PACING_RATE_CAP:		/*  URL:cap  -- used by side-channel */  in rack_set_sockopt()
24304 		case TCP_HDWR_UP_ONLY:			/*  URL:uponly -- hardware pacing  boolean */  in rack_set_sockopt()
24364 	if ((sopt->sopt_name == TCP_PACING_RATE_CAP) ||  in rack_set_sockopt()
24365 	    (sopt->sopt_name == TCP_FILLCW_RATE_CAP)) {  in rack_set_sockopt()
24368 		 * We truncate it down to 32 bits for the socket-option trace this  in rack_set_sockopt()
24372 	} else if (sopt->sopt_name == TCP_HYBRID_PACING) {  in rack_set_sockopt()
24382 	if (tp->t_fb != &__tcp_rack) {  in rack_set_sockopt()
24386 	if (rack->defer_options && (rack->gp_ready == 0) &&  in rack_set_sockopt()
24387 	    (sopt->sopt_name != TCP_DEFER_OPTIONS) &&  in rack_set_sockopt()
24388 	    (sopt->sopt_name != TCP_HYBRID_PACING) &&  in rack_set_sockopt()
24389 	    (sopt->sopt_name != TCP_RACK_SET_RXT_OPTIONS) &&  in rack_set_sockopt()
24390 	    (sopt->sopt_name != TCP_RACK_PACING_BETA_ECN) &&  in rack_set_sockopt()
24391 	    (sopt->sopt_name != TCP_RACK_MEASURE_CNT)) {  in rack_set_sockopt()
24393 		if (rack_add_deferred_option(rack, sopt->sopt_name, loptval)) {  in rack_set_sockopt()
24402 	error = rack_process_option(tp, rack, sopt->sopt_name, optval, loptval, &hybrid);  in rack_set_sockopt()
24414 	ti->tcpi_state = tp->t_state;  in rack_fill_info()
24415 	if ((tp->t_flags & TF_REQ_TSTMP) && (tp->t_flags & TF_RCVD_TSTMP))  in rack_fill_info()
24416 		ti->tcpi_options |= TCPI_OPT_TIMESTAMPS;  in rack_fill_info()
24417 	if (tp->t_flags & TF_SACK_PERMIT)  in rack_fill_info()
24418 		ti->tcpi_options |= TCPI_OPT_SACK;  in rack_fill_info()
24419 	if ((tp->t_flags & TF_REQ_SCALE) && (tp->t_flags & TF_RCVD_SCALE)) {  in rack_fill_info()
24420 		ti->tcpi_options |= TCPI_OPT_WSCALE;  in rack_fill_info()
24421 		ti->tcpi_snd_wscale = tp->snd_scale;  in rack_fill_info()
24422 		ti->tcpi_rcv_wscale = tp->rcv_scale;  in rack_fill_info()
24424 	if (tp->t_flags2 & (TF2_ECN_PERMIT | TF2_ACE_PERMIT))  in rack_fill_info()
24425 		ti->tcpi_options |= TCPI_OPT_ECN;  in rack_fill_info()
24426 	if (tp->t_flags & TF_FASTOPEN)  in rack_fill_info()
24427 		ti->tcpi_options |= TCPI_OPT_TFO;  in rack_fill_info()
24429 	ti->tcpi_last_data_recv = ((uint32_t)ticks - tp->t_rcvtime) * tick;  in rack_fill_info()
24431 	ti->tcpi_rtt = tp->t_srtt;  in rack_fill_info()
24432 	ti->tcpi_rttvar = tp->t_rttvar;  in rack_fill_info()
24433 	ti->tcpi_rto = tp->t_rxtcur;  in rack_fill_info()
24434 	ti->tcpi_snd_ssthresh = tp->snd_ssthresh;  in rack_fill_info()
24435 	ti->tcpi_snd_cwnd = tp->snd_cwnd;  in rack_fill_info()
24437 	 * FreeBSD-specific extension fields for tcp_info.  in rack_fill_info()
24439 	ti->tcpi_rcv_space = tp->rcv_wnd;  in rack_fill_info()
24440 	ti->tcpi_rcv_nxt = tp->rcv_nxt;  in rack_fill_info()
24441 	ti->tcpi_snd_wnd = tp->snd_wnd;  in rack_fill_info()
24442 	ti->tcpi_snd_bwnd = 0;		/* Unused, kept for compat. */  in rack_fill_info()
24443 	ti->tcpi_snd_nxt = tp->snd_nxt;  in rack_fill_info()
24444 	ti->tcpi_snd_mss = tp->t_maxseg;  in rack_fill_info()
24445 	ti->tcpi_rcv_mss = tp->t_maxseg;  in rack_fill_info()
24446 	ti->tcpi_snd_rexmitpack = tp->t_sndrexmitpack;  in rack_fill_info()
24447 	ti->tcpi_rcv_ooopack = tp->t_rcvoopack;  in rack_fill_info()
24448 	ti->tcpi_snd_zerowin = tp->t_sndzerowin;  in rack_fill_info()
24449 	ti->tcpi_total_tlp = tp->t_sndtlppack;  in rack_fill_info()
24450 	ti->tcpi_total_tlp_bytes = tp->t_sndtlpbyte;  in rack_fill_info()
24451 	ti->tcpi_rttmin = tp->t_rttlow;  in rack_fill_info()
24453 	memcpy(&ti->tcpi_rxsyninfo, &tp->t_rxsyninfo, sizeof(struct tcpsyninfo));  in rack_fill_info()
24456 	if (tp->t_flags & TF_TOE) {  in rack_fill_info()
24457 		ti->tcpi_options |= TCPI_OPT_TOE;  in rack_fill_info()
24478 	rack = (struct tcp_rack *)tp->t_fb_ptr;  in rack_get_sockopt()
24483 	switch (sopt->sopt_name) {  in rack_get_sockopt()
24508 		if (strcmp(tp->t_cc->name, CCALGONAME_NEWRENO) != 0)  in rack_get_sockopt()
24510 		else if (rack->rc_pacing_cc_set == 0)  in rack_get_sockopt()
24511 			optval = rack->r_ctl.rc_saved_beta.beta_ecn;  in rack_get_sockopt()
24518 			if (tp->t_ccv.cc_data)  in rack_get_sockopt()
24519 				optval = ((struct newreno *)tp->t_ccv.cc_data)->beta_ecn;  in rack_get_sockopt()
24526 		if (rack->rc_rack_tmr_std_based) {  in rack_get_sockopt()
24529 		if (rack->rc_rack_use_dsack) {  in rack_get_sockopt()
24535 		if (tp->t_ccv.flags & CCF_HYSTART_ALLOWED) {  in rack_get_sockopt()
24537 			if (tp->t_ccv.flags & CCF_HYSTART_CAN_SH_CWND)  in rack_get_sockopt()
24539 			if (tp->t_ccv.flags & CCF_HYSTART_CONS_SSTH)  in rack_get_sockopt()
24550 		optval = rack->rack_hibeta;  in rack_get_sockopt()
24553 		optval = rack->defer_options;  in rack_get_sockopt()
24556 		optval = rack->r_ctl.req_measurements;  in rack_get_sockopt()
24559 		optval = rack->r_use_labc_for_rec;  in rack_get_sockopt()
24562 		optval = rack->rc_labc;  in rack_get_sockopt()
24565 		optval= rack->r_up_only;  in rack_get_sockopt()
24568 		loptval = rack->r_ctl.fillcw_cap;  in rack_get_sockopt()
24571 		loptval = rack->r_ctl.bw_rate_cap;  in rack_get_sockopt()
24578 		optval = rack->r_ctl.side_chan_dis_mask;  in rack_get_sockopt()
24585 		optval = rack->r_use_cmp_ack;  in rack_get_sockopt()
24588 		optval = rack->rc_pace_to_cwnd;  in rack_get_sockopt()
24591 		optval = rack->r_ctl.rc_no_push_at_mrtt;  in rack_get_sockopt()
24594 		optval = rack->rack_enable_scwnd;  in rack_get_sockopt()
24597 		optval = rack->rack_rec_nonrxt_use_cr;  in rack_get_sockopt()
24600 		if (rack->rack_no_prr  == 1)  in rack_get_sockopt()
24602 		else if (rack->no_prr_addback == 1)  in rack_get_sockopt()
24608 		if (rack->dis_lt_bw) {  in rack_get_sockopt()
24611 		} else if (rack->use_lesser_lt_bw) {  in rack_get_sockopt()
24623 		/* Now do we use the LRO mbuf-queue feature */  in rack_get_sockopt()
24624 		optval = rack->r_mbuf_queue;  in rack_get_sockopt()
24627 		optval = rack->cspr_is_fcc;  in rack_get_sockopt()
24630 		optval = rack->rc_gp_dyn_mul;  in rack_get_sockopt()
24637 		optval = rack->r_ctl.rc_tlp_cwnd_reduce;  in rack_get_sockopt()
24640 		val = rack->r_ctl.init_rate;  in rack_get_sockopt()
24647 		optval = rack->rc_force_max_seg;  in rack_get_sockopt()
24650 		optval = rack->r_ctl.rc_user_set_min_segs;  in rack_get_sockopt()
24654 		optval = rack->rc_user_set_max_segs;  in rack_get_sockopt()
24658 		optval = rack->rc_always_pace;  in rack_get_sockopt()
24662 		optval = rack->r_ctl.rc_prr_sendalot;  in rack_get_sockopt()
24665 		/* Minimum time between rack t-o's in ms */  in rack_get_sockopt()
24666 		optval = rack->r_ctl.rc_min_to;  in rack_get_sockopt()
24669 		optval = rack->r_ctl.rc_split_limit;  in rack_get_sockopt()
24673 		optval = rack->r_ctl.rc_early_recovery_segs;  in rack_get_sockopt()
24677 		optval = rack->r_ctl.rc_reorder_shift;  in rack_get_sockopt()
24680 		if (rack->r_ctl.gp_rnd_thresh) {  in rack_get_sockopt()
24683 			v = rack->r_ctl.gp_gain_req;  in rack_get_sockopt()
24685 			optval = v | (rack->r_ctl.gp_rnd_thresh & 0xff);  in rack_get_sockopt()
24686 			if (rack->r_ctl.gate_to_fs == 1)  in rack_get_sockopt()
24693 		optval = rack->r_ctl.rc_reorder_fade;  in rack_get_sockopt()
24697 		optval = rack->use_rack_rr;  in rack_get_sockopt()
24700 		optval = rack->r_rr_config;  in rack_get_sockopt()
24703 		optval = rack->r_rack_hw_rate_caps;  in rack_get_sockopt()
24706 		optval = rack->rack_hdw_pace_ena;  in rack_get_sockopt()
24710 		optval = rack->r_ctl.rc_tlp_threshold;  in rack_get_sockopt()
24713 		/* RACK added ms i.e. rack-rtt + reord + N */  in rack_get_sockopt()
24714 		optval = rack->r_ctl.rc_pkt_delay;  in rack_get_sockopt()
24717 		optval = rack->rack_tlp_threshold_use;  in rack_get_sockopt()
24720 		optval = rack->rc_pace_dnd;  in rack_get_sockopt()
24723 		optval = rack->r_ctl.rc_fixed_pacing_rate_ca;  in rack_get_sockopt()
24726 		optval = rack->r_ctl.rc_fixed_pacing_rate_ss;  in rack_get_sockopt()
24729 		optval = rack->r_ctl.rc_fixed_pacing_rate_rec;  in rack_get_sockopt()
24732 		optval = rack->r_ctl.rack_per_upper_bound_ss;  in rack_get_sockopt()
24734 		optval |= rack->r_ctl.rack_per_upper_bound_ca;  in rack_get_sockopt()
24737 		optval = rack->r_ctl.rack_per_of_gp_ca;  in rack_get_sockopt()
24740 		optval = rack->r_ctl.rack_per_of_gp_ss;  in rack_get_sockopt()
24743 		optval = rack->r_ctl.pace_len_divisor;  in rack_get_sockopt()
24746 		optval = rack->r_ctl.rc_rate_sample_method;  in rack_get_sockopt()
24749 		optval = tp->t_delayed_ack;  in rack_get_sockopt()
24752 		optval = rack->rc_allow_data_af_clo;  in rack_get_sockopt()
24755 		optval = rack->r_limit_scw;  in rack_get_sockopt()
24758 		if (rack->r_use_hpts_min)  in rack_get_sockopt()
24759 			optval = rack->r_ctl.max_reduction;  in rack_get_sockopt()
24764 		optval = rack->rc_gp_no_rec_chg;  in rack_get_sockopt()
24767 		optval = rack->rc_skip_timely;  in rack_get_sockopt()
24770 		optval = rack->r_ctl.timer_slop;  in rack_get_sockopt()
24778 		if ((sopt->sopt_name == TCP_PACING_RATE_CAP) ||  in rack_get_sockopt()
24779 		    (sopt->sopt_name == TCP_FILLCW_RATE_CAP))  in rack_get_sockopt()
24790 	if (sopt->sopt_dir == SOPT_SET) {  in rack_ctloutput()
24792 	} else if (sopt->sopt_dir == SOPT_GET) {  in rack_ctloutput()
24795 		panic("%s: sopt_dir $%d", __func__, sopt->sopt_dir);  in rack_ctloutput()
24866 			printf("Failed to register rack module -- err:%d\n", err);  in tcp_addrack()