431 #define	RACK_REXMTVAL(tp) max(rack_rto_min, ((tp)->t_srtt + ((tp)->t_rttvar << 2)))
2399 		if (rack->rc_tp->t_srtt == 0) {  in rack_get_gp_est()
2408 		srtt = (uint64_t)rack->rc_tp->t_srtt;  in rack_get_gp_est()
2712 		log.u_bbr.flex1 = rack->rc_tp->t_srtt;  in rack_log_to_start()
3106 		log.u_bbr.lost = rack->rc_tp->t_srtt;  in rack_log_doseg_done()
3560 	srtt = (uint64_t)tp->t_srtt;  in rack_get_measure_window()
5105 		srtt = (uint64_t)tp->t_srtt;  in rack_do_goodput_measurement()
6078 	else if (tp->t_srtt == 0)  in rack_grab_rtt()
6080 	return (tp->t_srtt);  in rack_grab_rtt()
6131 	t = (tp->t_srtt + (tp->t_rttvar << 2));  in rack_get_persists_timer_val()
6308 		if (tp->t_srtt) {  in rack_timer_start()
6310 			    (tp->t_srtt == 1)) {  in rack_timer_start()
6317 				srtt_cur = tp->t_srtt;  in rack_timer_start()
6328 		    tp->t_srtt &&  in rack_timer_start()
7621 	srtt = tp->t_srtt;  in rack_cc_conn_init()
7627 	if ((srtt == 0) && (tp->t_srtt != 0))  in rack_cc_conn_init()
7780 		tp->t_badrxtwin = ticks + (USEC_2_TICKS(tp->t_srtt)/2);  in rack_timeout_rxt()
7789 		rexmt = max(rack_rto_min, (tp->t_srtt + (tp->t_rttvar << 2))) * tcp_backoff[tp->t_rxtshift];  in rack_timeout_rxt()
7924 		tp->t_rttvar += tp->t_srtt;  in rack_timeout_rxt()
7925 		tp->t_srtt = 0;  in rack_timeout_rxt()
8718 	if (tp->t_srtt != 0) {  in tcp_rack_xmit_timer_commit()
8727 		delta = tp->t_srtt - rtt;  in tcp_rack_xmit_timer_commit()
8729 		tp->t_srtt -= (tp->t_srtt >> 3);  in tcp_rack_xmit_timer_commit()
8731 		tp->t_srtt += (rtt >> 3);  in tcp_rack_xmit_timer_commit()
8732 		if (tp->t_srtt <= 0)  in tcp_rack_xmit_timer_commit()
8733 			tp->t_srtt = 1;  in tcp_rack_xmit_timer_commit()
8749 		tp->t_srtt = rtt;  in tcp_rack_xmit_timer_commit()
17464 			srtt = max(tp->t_srtt, 1);  in rack_get_pacing_delay()
17782 			if (rack->rc_tp->t_srtt)  in rack_get_pacing_delay()
17783 				srtt = rack->rc_tp->t_srtt;  in rack_get_pacing_delay()
19990 		if (tp->t_srtt)  in rack_output()
19991 			rtts_idle = tot_idle / tp->t_srtt;  in rack_output()
22983 		if (rack->rc_tp->t_srtt) {  in rack_process_option()
24370 	ti->tcpi_rtt = tp->t_srtt;  in rack_fill_info()