Function rack_log_pacing_delay_calc

freebsd/netinet/tcp_stacks/rack.c:11285–11341

}

static void
rack_log_pacing_delay_calc(struct tcp_rack *rack, uint32_t len, uint32_t slot,
			   uint64_t bw_est, uint64_t bw, uint64_t len_time, int method,
			   int line, struct rack_sendmap *rsm)
{
	if (rack->rc_tp->t_logstate != TCP_LOG_STATE_OFF) {
		union tcp_log_stackspecific log;
		struct timeval tv;

		memset(&log, 0, sizeof(log));
		log.u_bbr.flex1 = slot;
		log.u_bbr.flex2 = len;
		log.u_bbr.flex3 = rack->r_ctl.rc_pace_min_segs;
		log.u_bbr.flex4 = rack->r_ctl.rc_pace_max_segs;
		log.u_bbr.flex5 = rack->r_ctl.rack_per_of_gp_ss;
		log.u_bbr.flex6 = rack->r_ctl.rack_per_of_gp_ca;
		log.u_bbr.use_lt_bw = rack->app_limited_needs_set;
		log.u_bbr.use_lt_bw <<= 1;
		log.u_bbr.use_lt_bw = rack->rc_gp_filled;
		log.u_bbr.use_lt_bw <<= 1;
		log.u_bbr.use_lt_bw |= rack->measure_saw_probe_rtt;
		log.u_bbr.use_lt_bw <<= 1;
		log.u_bbr.use_lt_bw |= rack->in_probe_rtt;
		log.u_bbr.pkt_epoch = line;
		log.u_bbr.applimited = rack->r_ctl.rack_per_of_gp_rec;
		log.u_bbr.bw_inuse = bw_est;
		log.u_bbr.delRate = bw;
		if (rack->r_ctl.gp_bw == 0)
			log.u_bbr.cur_del_rate = 0;
		else
			log.u_bbr.cur_del_rate = rack_get_bw(rack);
		log.u_bbr.rttProp = len_time;
		log.u_bbr.pkts_out = rack->r_ctl.rc_rack_min_rtt;
		log.u_bbr.lost = rack->r_ctl.rc_probertt_sndmax_atexit;
		log.u_bbr.pacing_gain = rack_get_output_gain(rack, rsm);
		if (rack->r_ctl.cwnd_to_use < rack->rc_tp->snd_ssthresh) {
			/* We are in slow start */
			log.u_bbr.flex7 = 1;
		} else {
			/* we are on congestion avoidance */
			log.u_bbr.flex7 = 0;
		}
		log.u_bbr.flex8 = method;
		log.u_bbr.timeStamp = tcp_get_usecs(&tv);
		log.u_bbr.inflight = ctf_flight_size(rack->rc_tp, rack->r_ctl.rc_sacked);
		log.u_bbr.cwnd_gain = rack->rc_gp_saw_rec;
		log.u_bbr.cwnd_gain <<= 1;
		log.u_bbr.cwnd_gain |= rack->rc_gp_saw_ss;
		log.u_bbr.cwnd_gain <<= 1;
		log.u_bbr.cwnd_gain |= rack->rc_gp_saw_ca;
		TCP_LOG_EVENTP(rack->rc_tp, NULL,
		    &rack->rc_inp->inp_socket->so_rcv,
		    &rack->rc_inp->inp_socket->so_snd,
		    BBR_LOG_HPTSI_CALC, 0,
		    0, &log, false, &tv);
	}
}