Function rack_log_rtt_upd

freebsd/netinet/tcp_stacks/rack.c:1737–1801

}

static void
rack_log_rtt_upd(struct tcpcb *tp, struct tcp_rack *rack, uint32_t t, uint32_t len,
		 struct rack_sendmap *rsm, int conf)
{
	if (tp->t_logstate != TCP_LOG_STATE_OFF) {
		union tcp_log_stackspecific log;
		struct timeval tv;
		memset(&log.u_bbr, 0, sizeof(log.u_bbr));
		log.u_bbr.inhpts = rack->rc_inp->inp_in_hpts;
		log.u_bbr.ininput = rack->rc_inp->inp_in_input;
		log.u_bbr.flex1 = t;
		log.u_bbr.flex2 = len;
		log.u_bbr.flex3 = rack->r_ctl.rc_rack_min_rtt * HPTS_USEC_IN_MSEC;
		log.u_bbr.flex4 = rack->r_ctl.rack_rs.rs_rtt_lowest * HPTS_USEC_IN_MSEC;
		log.u_bbr.flex5 = rack->r_ctl.rack_rs.rs_rtt_highest * HPTS_USEC_IN_MSEC;
		log.u_bbr.flex6 = rack->r_ctl.rack_rs.rs_rtt_cnt;
		log.u_bbr.flex7 = conf;
		log.u_bbr.rttProp = (uint64_t)rack->r_ctl.rack_rs.rs_rtt_tot * (uint64_t)HPTS_USEC_IN_MSEC;
		log.u_bbr.flex8 = rack->r_ctl.rc_rate_sample_method;
		if (rack->rack_no_prr)
			log.u_bbr.pkts_out = 0;
		else
			log.u_bbr.pkts_out = rack->r_ctl.rc_prr_sndcnt;
		log.u_bbr.timeStamp = tcp_get_usecs(&tv);
		log.u_bbr.delivered = rack->r_ctl.rack_rs.rs_us_rtt;
		log.u_bbr.pkts_out = rack->r_ctl.rack_rs.rs_flags;
		log.u_bbr.inflight = ctf_flight_size(rack->rc_tp, rack->r_ctl.rc_sacked);
		if (rsm) {
			log.u_bbr.pkt_epoch = rsm->r_start;
			log.u_bbr.lost = rsm->r_end;
			log.u_bbr.cwnd_gain = rsm->r_rtr_cnt;
		} else {
			/* Its a SYN */
			log.u_bbr.pkt_epoch = rack->rc_tp->iss;
			log.u_bbr.lost = 0;
			log.u_bbr.cwnd_gain = 0;
		}
		/* Write out general bits of interest rrs here */
		log.u_bbr.use_lt_bw = rack->rc_highly_buffered;
		log.u_bbr.use_lt_bw <<= 1;
		log.u_bbr.use_lt_bw |= rack->forced_ack;
		log.u_bbr.use_lt_bw <<= 1;
		log.u_bbr.use_lt_bw |= rack->rc_gp_dyn_mul;
		log.u_bbr.use_lt_bw <<= 1;
		log.u_bbr.use_lt_bw |= rack->in_probe_rtt;
		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->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->rc_dragged_bottom;
		log.u_bbr.applimited = rack->r_ctl.rc_target_probertt_flight;
		log.u_bbr.epoch = rack->r_ctl.rc_time_probertt_starts;
		log.u_bbr.lt_epoch = rack->r_ctl.rc_time_probertt_entered;
		log.u_bbr.cur_del_rate = rack->r_ctl.rc_lower_rtt_us_cts;
		log.u_bbr.delRate = rack->r_ctl.rc_gp_srtt;