BBR_CUM_ACKED
if (ack_type == BBR_CUM_ACKED)
(ack_type == BBR_CUM_ACKED) &&
(ack_type == BBR_CUM_ACKED) &&
bbr_update_rtt(tp, bbr, rsm, to, cts, BBR_CUM_ACKED, 0);
bbr_update_rtt(tp, bbr, rsm, to, cts, BBR_CUM_ACKED, th_ack);
bbr_isit_a_pkt_epoch(bbr, cts, rsm, __LINE__, BBR_CUM_ACKED);
bbr_update_rtt(tp, bbr, &lrsm, to, cts, BBR_CUM_ACKED, th_ack);
bbr_isit_a_pkt_epoch(bbr, cts, rsm, __LINE__, BBR_CUM_ACKED);