diff options
Diffstat (limited to 'drivers/net/wireless/ath/ath9k/recv.c')
| -rw-r--r-- | drivers/net/wireless/ath/ath9k/recv.c | 80 |
1 files changed, 56 insertions, 24 deletions
diff --git a/drivers/net/wireless/ath/ath9k/recv.c b/drivers/net/wireless/ath/ath9k/recv.c index d7c129bb571..2d0fd17a191 100644 --- a/drivers/net/wireless/ath/ath9k/recv.c +++ b/drivers/net/wireless/ath/ath9k/recv.c @@ -1016,18 +1016,20 @@ static void ath9k_rx_skb_postprocess(struct ath_common *common, rxs->flag &= ~RX_FLAG_DECRYPTED; } +#ifdef CONFIG_ATH9K_DEBUGFS static s8 fix_rssi_inv_only(u8 rssi_val) { if (rssi_val == 128) rssi_val = 0; return (s8) rssi_val; } +#endif - -static void ath_process_fft(struct ath_softc *sc, struct ieee80211_hdr *hdr, - struct ath_rx_status *rs, u64 tsf) +/* returns 1 if this was a spectral frame, even if not handled. */ +static int ath_process_fft(struct ath_softc *sc, struct ieee80211_hdr *hdr, + struct ath_rx_status *rs, u64 tsf) { -#ifdef CONFIG_ATH_DEBUG +#ifdef CONFIG_ATH9K_DEBUGFS struct ath_hw *ah = sc->sc_ah; u8 bins[SPECTRAL_HT20_NUM_BINS]; u8 *vdata = (u8 *)hdr; @@ -1035,7 +1037,8 @@ static void ath_process_fft(struct ath_softc *sc, struct ieee80211_hdr *hdr, struct ath_radar_info *radar_info; struct ath_ht20_mag_info *mag_info; int len = rs->rs_datalen; - int i, dc_pos; + int dc_pos; + u16 length, max_magnitude; /* AR9280 and before report via ATH9K_PHYERR_RADAR, AR93xx and newer * via ATH9K_PHYERR_SPECTRAL. Haven't seen ATH9K_PHYERR_FALSE_RADAR_EXT @@ -1044,7 +1047,14 @@ static void ath_process_fft(struct ath_softc *sc, struct ieee80211_hdr *hdr, if (rs->rs_phyerr != ATH9K_PHYERR_RADAR && rs->rs_phyerr != ATH9K_PHYERR_FALSE_RADAR_EXT && rs->rs_phyerr != ATH9K_PHYERR_SPECTRAL) - return; + return 0; + + /* check if spectral scan bit is set. This does not have to be checked + * if received through a SPECTRAL phy error, but shouldn't hurt. + */ + radar_info = ((struct ath_radar_info *)&vdata[len]) - 1; + if (!(radar_info->pulse_bw_info & SPECTRAL_SCAN_BITMASK)) + return 0; /* Variation in the data length is possible and will be fixed later. * Note that we only support HT20 for now. @@ -1053,19 +1063,13 @@ static void ath_process_fft(struct ath_softc *sc, struct ieee80211_hdr *hdr, */ if ((len > SPECTRAL_HT20_TOTAL_DATA_LEN + 2) || (len < SPECTRAL_HT20_TOTAL_DATA_LEN - 1)) - return; - - /* check if spectral scan bit is set. This does not have to be checked - * if received through a SPECTRAL phy error, but shouldn't hurt. - */ - radar_info = ((struct ath_radar_info *)&vdata[len]) - 1; - if (!(radar_info->pulse_bw_info & SPECTRAL_SCAN_BITMASK)) - return; + return 1; fft_sample.tlv.type = ATH_FFT_SAMPLE_HT20; - fft_sample.tlv.length = sizeof(fft_sample) - sizeof(fft_sample.tlv); + length = sizeof(fft_sample) - sizeof(fft_sample.tlv); + fft_sample.tlv.length = __cpu_to_be16(length); - fft_sample.freq = ah->curchan->chan->center_freq; + fft_sample.freq = __cpu_to_be16(ah->curchan->chan->center_freq); fft_sample.rssi = fix_rssi_inv_only(rs->rs_rssi_ctl0); fft_sample.noise = ah->noise; @@ -1093,7 +1097,7 @@ static void ath_process_fft(struct ath_softc *sc, struct ieee80211_hdr *hdr, memcpy(&bins[32], &vdata[33], SPECTRAL_HT20_NUM_BINS - 32); break; default: - return; + return 1; } /* DC value (value in the middle) is the blind spot of the spectral @@ -1105,19 +1109,41 @@ static void ath_process_fft(struct ath_softc *sc, struct ieee80211_hdr *hdr, /* mag data is at the end of the frame, in front of radar_info */ mag_info = ((struct ath_ht20_mag_info *)radar_info) - 1; - /* Apply exponent and grab further auxiliary information. */ - for (i = 0; i < SPECTRAL_HT20_NUM_BINS; i++) - fft_sample.data[i] = bins[i] << mag_info->max_exp; + /* copy raw bins without scaling them */ + memcpy(fft_sample.data, bins, SPECTRAL_HT20_NUM_BINS); + fft_sample.max_exp = mag_info->max_exp & 0xf; - fft_sample.max_magnitude = spectral_max_magnitude(mag_info->all_bins); + max_magnitude = spectral_max_magnitude(mag_info->all_bins); + fft_sample.max_magnitude = __cpu_to_be16(max_magnitude); fft_sample.max_index = spectral_max_index(mag_info->all_bins); fft_sample.bitmap_weight = spectral_bitmap_weight(mag_info->all_bins); - fft_sample.tsf = tsf; + fft_sample.tsf = __cpu_to_be64(tsf); ath_debug_send_fft_sample(sc, &fft_sample.tlv); + return 1; +#else + return 0; #endif } +static void ath9k_apply_ampdu_details(struct ath_softc *sc, + struct ath_rx_status *rs, struct ieee80211_rx_status *rxs) +{ + if (rs->rs_isaggr) { + rxs->flag |= RX_FLAG_AMPDU_DETAILS | RX_FLAG_AMPDU_LAST_KNOWN; + + rxs->ampdu_reference = sc->rx.ampdu_ref; + + if (!rs->rs_moreaggr) { + rxs->flag |= RX_FLAG_AMPDU_IS_LAST; + sc->rx.ampdu_ref++; + } + + if (rs->rs_flags & ATH9K_RX_DELIM_CRC_PRE) + rxs->flag |= RX_FLAG_AMPDU_DELIM_CRC_ERROR; + } +} + int ath_rx_tasklet(struct ath_softc *sc, int flush, bool hp) { struct ath_buf *bf; @@ -1202,8 +1228,12 @@ int ath_rx_tasklet(struct ath_softc *sc, int flush, bool hp) unlikely(tsf_lower - rs.rs_tstamp > 0x10000000)) rxs->mactime += 0x100000000ULL; - if ((rs.rs_status & ATH9K_RXERR_PHY)) - ath_process_fft(sc, hdr, &rs, rxs->mactime); + if (rs.rs_status & ATH9K_RXERR_PHY) { + if (ath_process_fft(sc, hdr, &rs, rxs->mactime)) { + RX_STAT_INC(rx_spectral); + goto requeue_drop_frag; + } + } retval = ath9k_rx_skb_preprocess(common, hw, hdr, &rs, rxs, &decrypt_error); @@ -1320,6 +1350,8 @@ int ath_rx_tasklet(struct ath_softc *sc, int flush, bool hp) if ((ah->caps.hw_caps & ATH9K_HW_CAP_ANT_DIV_COMB) && sc->ant_rx == 3) ath_ant_comb_scan(sc, &rs); + ath9k_apply_ampdu_details(sc, &rs, rxs); + ieee80211_rx(hw, skb); requeue_drop_frag: |