RTWN_RIDX_TO_MCS
rate = RTWN_RIDX_TO_MCS(ridx) | IEEE80211_RATE_MCS;
txs.final_rate = RTWN_RIDX_TO_MCS(rpt->final_rate);
IEEE80211_RATE_MCS | (RTWN_RIDX_TO_MCS(rate));
txs.final_rate = RTWN_RIDX_TO_MCS(rpt->final_rate);
IEEE80211_RATE_MCS | RTWN_RIDX_TO_MCS(rate);