- /* setup supported mcs set */
- memset(ht_info->supp_mcs_set, 0, 16);
- ht_info->supp_mcs_set[0] = 0xff;
- ht_info->supp_mcs_set[1] = 0xff;
- ht_info->supp_mcs_set[12] = IEEE80211_HT_CAP_MCS_TX_DEFINED;
-}
-
-static int ath_rate2idx(struct ath_softc *sc, int rate)
-{
- int i = 0, cur_band, n_rates;
- struct ieee80211_hw *hw = sc->hw;
-
- cur_band = hw->conf.channel->band;
- n_rates = sc->sbands[cur_band].n_bitrates;
-
- for (i = 0; i < n_rates; i++) {
- if (sc->sbands[cur_band].bitrates[i].bitrate == rate)
- break;
- }
-
- /*
- * NB:mac80211 validates rx rate index against the supported legacy rate
- * index only (should be done against ht rates also), return the highest
- * legacy rate index for rx rate which does not match any one of the
- * supported basic and extended rates to make mac80211 happy.
- * The following hack will be cleaned up once the issue with
- * the rx rate index validation in mac80211 is fixed.
- */
- if (i == n_rates)
- return n_rates - 1;
- return i;
-}
-
-static void ath9k_rx_prepare(struct ath_softc *sc,
- struct sk_buff *skb,
- struct ath_recv_status *status,
- struct ieee80211_rx_status *rx_status)
-{
- struct ieee80211_hw *hw = sc->hw;
- struct ieee80211_channel *curchan = hw->conf.channel;
-
- memset(rx_status, 0, sizeof(struct ieee80211_rx_status));
-
- rx_status->mactime = status->tsf;
- rx_status->band = curchan->band;
- rx_status->freq = curchan->center_freq;
- rx_status->noise = sc->sc_ani.sc_noise_floor;
- rx_status->signal = rx_status->noise + status->rssi;
- rx_status->rate_idx = ath_rate2idx(sc, (status->rateKbps / 100));
- rx_status->antenna = status->antenna;
-
- /* XXX Fix me, 64 cannot be the max rssi value, rigure it out */
- rx_status->qual = status->rssi * 100 / 64;
-
- if (status->flags & ATH_RX_MIC_ERROR)
- rx_status->flag |= RX_FLAG_MMIC_ERROR;
- if (status->flags & ATH_RX_FCS_ERROR)
- rx_status->flag |= RX_FLAG_FAILED_FCS_CRC;
-
- rx_status->flag |= RX_FLAG_TSFT;
-}
-
-static u8 parse_mpdudensity(u8 mpdudensity)
-{
- /*
- * 802.11n D2.0 defined values for "Minimum MPDU Start Spacing":
- * 0 for no restriction
- * 1 for 1/4 us
- * 2 for 1/2 us
- * 3 for 1 us
- * 4 for 2 us
- * 5 for 4 us
- * 6 for 8 us
- * 7 for 16 us
- */
- switch (mpdudensity) {
- case 0:
- return 0;
- case 1:
- case 2:
- case 3:
- /* Our lower layer calculations limit our precision to
- 1 microsecond */
- return 1;
- case 4:
- return 2;
- case 5:
- return 4;
- case 6:
- return 8;
- case 7:
- return 16;
- default:
- return 0;
- }