MCS
rix = sc->sc_rixmap[MCS(x)];
("mcs %u has rix %d", MCS(x), rix));
current_mcs = MCS(current_rix) & 0x7;
rix_mcs = MCS(rix) & 0x7;
if (MCS(srate) == tp->ucastrate)
if (((MCS(rix)& 0x7f) <= 4) &&
MCS(cur_rix), cur_att, MCS(best_rix), average_tx_time);
MCS(best_rix), MCS(cur_rix),
MCS(best_rix) & IEEE80211_RATE_VAL);