BW_UNIT
return BW_UNIT;
bw = (u64)tcp_snd_cwnd(tp) * BW_UNIT;
bdp = (((w * gain) >> BBR_SCALE) + BW_UNIT - 1) / BW_UNIT;
/ BW_UNIT;
bw = (u64)delivered * BW_UNIT;
bw = div64_long((u64)rs->delivered * BW_UNIT, rs->interval_us);
expected_acked = ((u64)bbr_bw(sk) * epoch_us) / BW_UNIT;