*/
#include <linux/dma-mapping.h>
-#include <linux/relay.h>
#include "ath9k.h"
#include "ar9003_mac.h"
rfilt |= ATH9K_RX_FILTER_MCAST_BCAST_ALL;
}
- if (AR_SREV_9550(sc->sc_ah))
+ if (AR_SREV_9550(sc->sc_ah) || AR_SREV_9531(sc->sc_ah))
rfilt |= ATH9K_RX_FILTER_4ADDRESS;
return rfilt;
return NULL;
/*
- * mark descriptor as zero-length and set the 'more'
- * flag to ensure that both buffers get discarded
+ * Re-check previous descriptor, in case it has been filled
+ * in the mean time.
*/
- rs->rs_datalen = 0;
- rs->rs_more = true;
+ ret = ath9k_hw_rxprocdesc(ah, ds, rs);
+ if (ret == -EINPROGRESS) {
+ /*
+ * mark descriptor as zero-length and set the 'more'
+ * flag to ensure that both buffers get discarded
+ */
+ rs->rs_datalen = 0;
+ rs->rs_more = true;
+ }
}
list_del(&bf->list);
enum ieee80211_band band;
unsigned int i = 0;
struct ath_softc __maybe_unused *sc = common->priv;
+ struct ath_hw *ah = sc->sc_ah;
- band = hw->conf.chandef.chan->band;
+ band = ah->curchan->chan->band;
sband = hw->wiphy->bands[band];
- switch (hw->conf.chandef.width) {
- case NL80211_CHAN_WIDTH_5:
+ if (IS_CHAN_QUARTER_RATE(ah->curchan))
rxs->flag |= RX_FLAG_5MHZ;
- break;
- case NL80211_CHAN_WIDTH_10:
+ else if (IS_CHAN_HALF_RATE(ah->curchan))
rxs->flag |= RX_FLAG_10MHZ;
- break;
- default:
- break;
- }
if (rx_stats->rs_rate & 0x80) {
/* HT rate */
struct ath_hw *ah = common->ah;
int last_rssi;
int rssi = rx_stats->rs_rssi;
+ int i, j;
/*
* RSSI is not available for subframes in an A-MPDU.
return;
}
+ for (i = 0, j = 0; i < ARRAY_SIZE(rx_stats->rs_rssi_ctl); i++) {
+ s8 rssi;
+
+ if (!(ah->rxchainmask & BIT(i)))
+ continue;
+
+ rssi = rx_stats->rs_rssi_ctl[i];
+ if (rssi != ATH9K_RSSI_BAD) {
+ rxs->chains |= BIT(j);
+ rxs->chain_signal[j] = ah->noise + rssi;
+ }
+ j++;
+ }
+
/*
* Update Beacon RSSI, this is used by ANI.
*/
rxs->mactime += 0x100000000ULL;
}
-#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
-
-/* 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_ATH9K_DEBUGFS
- struct ath_hw *ah = sc->sc_ah;
- u8 num_bins, *bins, *vdata = (u8 *)hdr;
- struct fft_sample_ht20 fft_sample_20;
- struct fft_sample_ht20_40 fft_sample_40;
- struct fft_sample_tlv *tlv;
- struct ath_radar_info *radar_info;
- int len = rs->rs_datalen;
- int dc_pos;
- u16 fft_len, length, freq = ah->curchan->chan->center_freq;
- enum nl80211_channel_type chan_type;
-
- /* AR9280 and before report via ATH9K_PHYERR_RADAR, AR93xx and newer
- * via ATH9K_PHYERR_SPECTRAL. Haven't seen ATH9K_PHYERR_FALSE_RADAR_EXT
- * yet, but this is supposed to be possible as well.
- */
- if (rs->rs_phyerr != ATH9K_PHYERR_RADAR &&
- rs->rs_phyerr != ATH9K_PHYERR_FALSE_RADAR_EXT &&
- rs->rs_phyerr != ATH9K_PHYERR_SPECTRAL)
- 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;
-
- chan_type = cfg80211_get_chandef_type(&sc->hw->conf.chandef);
- if ((chan_type == NL80211_CHAN_HT40MINUS) ||
- (chan_type == NL80211_CHAN_HT40PLUS)) {
- fft_len = SPECTRAL_HT20_40_TOTAL_DATA_LEN;
- num_bins = SPECTRAL_HT20_40_NUM_BINS;
- bins = (u8 *)fft_sample_40.data;
- } else {
- fft_len = SPECTRAL_HT20_TOTAL_DATA_LEN;
- num_bins = SPECTRAL_HT20_NUM_BINS;
- bins = (u8 *)fft_sample_20.data;
- }
-
- /* Variation in the data length is possible and will be fixed later */
- if ((len > fft_len + 2) || (len < fft_len - 1))
- return 1;
-
- switch (len - fft_len) {
- case 0:
- /* length correct, nothing to do. */
- memcpy(bins, vdata, num_bins);
- break;
- case -1:
- /* first byte missing, duplicate it. */
- memcpy(&bins[1], vdata, num_bins - 1);
- bins[0] = vdata[0];
- break;
- case 2:
- /* MAC added 2 extra bytes at bin 30 and 32, remove them. */
- memcpy(bins, vdata, 30);
- bins[30] = vdata[31];
- memcpy(&bins[31], &vdata[33], num_bins - 31);
- break;
- case 1:
- /* MAC added 2 extra bytes AND first byte is missing. */
- bins[0] = vdata[0];
- memcpy(&bins[1], vdata, 30);
- bins[31] = vdata[31];
- memcpy(&bins[32], &vdata[33], num_bins - 32);
- break;
- default:
- return 1;
- }
-
- /* DC value (value in the middle) is the blind spot of the spectral
- * sample and invalid, interpolate it.
- */
- dc_pos = num_bins / 2;
- bins[dc_pos] = (bins[dc_pos + 1] + bins[dc_pos - 1]) / 2;
-
- if ((chan_type == NL80211_CHAN_HT40MINUS) ||
- (chan_type == NL80211_CHAN_HT40PLUS)) {
- s8 lower_rssi, upper_rssi;
- s16 ext_nf;
- u8 lower_max_index, upper_max_index;
- u8 lower_bitmap_w, upper_bitmap_w;
- u16 lower_mag, upper_mag;
- struct ath9k_hw_cal_data *caldata = ah->caldata;
- struct ath_ht20_40_mag_info *mag_info;
-
- if (caldata)
- ext_nf = ath9k_hw_getchan_noise(ah, ah->curchan,
- caldata->nfCalHist[3].privNF);
- else
- ext_nf = ATH_DEFAULT_NOISE_FLOOR;
-
- length = sizeof(fft_sample_40) - sizeof(struct fft_sample_tlv);
- fft_sample_40.tlv.type = ATH_FFT_SAMPLE_HT20_40;
- fft_sample_40.tlv.length = __cpu_to_be16(length);
- fft_sample_40.freq = __cpu_to_be16(freq);
- fft_sample_40.channel_type = chan_type;
-
- if (chan_type == NL80211_CHAN_HT40PLUS) {
- lower_rssi = fix_rssi_inv_only(rs->rs_rssi_ctl0);
- upper_rssi = fix_rssi_inv_only(rs->rs_rssi_ext0);
-
- fft_sample_40.lower_noise = ah->noise;
- fft_sample_40.upper_noise = ext_nf;
- } else {
- lower_rssi = fix_rssi_inv_only(rs->rs_rssi_ext0);
- upper_rssi = fix_rssi_inv_only(rs->rs_rssi_ctl0);
-
- fft_sample_40.lower_noise = ext_nf;
- fft_sample_40.upper_noise = ah->noise;
- }
- fft_sample_40.lower_rssi = lower_rssi;
- fft_sample_40.upper_rssi = upper_rssi;
-
- mag_info = ((struct ath_ht20_40_mag_info *)radar_info) - 1;
- lower_mag = spectral_max_magnitude(mag_info->lower_bins);
- upper_mag = spectral_max_magnitude(mag_info->upper_bins);
- fft_sample_40.lower_max_magnitude = __cpu_to_be16(lower_mag);
- fft_sample_40.upper_max_magnitude = __cpu_to_be16(upper_mag);
- lower_max_index = spectral_max_index(mag_info->lower_bins);
- upper_max_index = spectral_max_index(mag_info->upper_bins);
- fft_sample_40.lower_max_index = lower_max_index;
- fft_sample_40.upper_max_index = upper_max_index;
- lower_bitmap_w = spectral_bitmap_weight(mag_info->lower_bins);
- upper_bitmap_w = spectral_bitmap_weight(mag_info->upper_bins);
- fft_sample_40.lower_bitmap_weight = lower_bitmap_w;
- fft_sample_40.upper_bitmap_weight = upper_bitmap_w;
- fft_sample_40.max_exp = mag_info->max_exp & 0xf;
-
- fft_sample_40.tsf = __cpu_to_be64(tsf);
-
- tlv = (struct fft_sample_tlv *)&fft_sample_40;
- } else {
- u8 max_index, bitmap_w;
- u16 magnitude;
- struct ath_ht20_mag_info *mag_info;
-
- length = sizeof(fft_sample_20) - sizeof(struct fft_sample_tlv);
- fft_sample_20.tlv.type = ATH_FFT_SAMPLE_HT20;
- fft_sample_20.tlv.length = __cpu_to_be16(length);
- fft_sample_20.freq = __cpu_to_be16(freq);
-
- fft_sample_20.rssi = fix_rssi_inv_only(rs->rs_rssi_ctl0);
- fft_sample_20.noise = ah->noise;
-
- mag_info = ((struct ath_ht20_mag_info *)radar_info) - 1;
- magnitude = spectral_max_magnitude(mag_info->all_bins);
- fft_sample_20.max_magnitude = __cpu_to_be16(magnitude);
- max_index = spectral_max_index(mag_info->all_bins);
- fft_sample_20.max_index = max_index;
- bitmap_w = spectral_bitmap_weight(mag_info->all_bins);
- fft_sample_20.bitmap_weight = bitmap_w;
- fft_sample_20.max_exp = mag_info->max_exp & 0xf;
-
- fft_sample_20.tsf = __cpu_to_be64(tsf);
-
- tlv = (struct fft_sample_tlv *)&fft_sample_20;
- }
-
- ath_debug_send_fft_sample(sc, tlv);
- return 1;
-#else
- return 0;
-#endif
-}
-
-static bool ath9k_is_mybeacon(struct ath_softc *sc, struct ieee80211_hdr *hdr)
-{
- struct ath_hw *ah = sc->sc_ah;
- struct ath_common *common = ath9k_hw_common(ah);
-
- if (ieee80211_is_beacon(hdr->frame_control)) {
- RX_STAT_INC(rx_beacons);
- if (!is_zero_ether_addr(common->curbssid) &&
- ether_addr_equal(hdr->addr3, common->curbssid))
- return true;
- }
-
- return false;
-}
-
/*
* For Decrypt or Demic errors, we only mark packet status here and always push
* up the frame up to let mac80211 handle the actual error case, be it no
struct ath_common *common = ath9k_hw_common(ah);
struct ieee80211_hdr *hdr;
bool discard_current = sc->rx.discard_next;
- int ret = 0;
/*
* Discard corrupt descriptors which are marked in
* ath_get_next_rx_buf().
*/
- sc->rx.discard_next = rx_stats->rs_more;
if (discard_current)
- return -EINVAL;
+ goto corrupt;
+
+ sc->rx.discard_next = false;
/*
* Discard zero-length packets.
*/
if (!rx_stats->rs_datalen) {
RX_STAT_INC(rx_len_err);
- return -EINVAL;
+ goto corrupt;
}
- /*
- * rs_status follows rs_datalen so if rs_datalen is too large
- * we can take a hint that hardware corrupted it, so ignore
- * those frames.
- */
+ /*
+ * rs_status follows rs_datalen so if rs_datalen is too large
+ * we can take a hint that hardware corrupted it, so ignore
+ * those frames.
+ */
if (rx_stats->rs_datalen > (common->rx_bufsize - ah->caps.rx_status_len)) {
RX_STAT_INC(rx_len_err);
- return -EINVAL;
+ goto corrupt;
}
/* Only use status info from the last fragment */
* This is different from the other corrupt descriptor
* condition handled above.
*/
- if (rx_stats->rs_status & ATH9K_RXERR_CORRUPT_DESC) {
- ret = -EINVAL;
- goto exit;
- }
+ if (rx_stats->rs_status & ATH9K_RXERR_CORRUPT_DESC)
+ goto corrupt;
hdr = (struct ieee80211_hdr *) (skb->data + ah->caps.rx_status_len);
if (ath_process_fft(sc, hdr, rx_stats, rx_status->mactime))
RX_STAT_INC(rx_spectral);
- ret = -EINVAL;
- goto exit;
+ return -EINVAL;
}
/*
* everything but the rate is checked here, the rate check is done
* separately to avoid doing two lookups for a rate for each frame.
*/
- if (!ath9k_rx_accept(common, hdr, rx_status, rx_stats, decrypt_error)) {
- ret = -EINVAL;
- goto exit;
- }
+ if (!ath9k_rx_accept(common, hdr, rx_status, rx_stats, decrypt_error))
+ return -EINVAL;
- rx_stats->is_mybeacon = ath9k_is_mybeacon(sc, hdr);
- if (rx_stats->is_mybeacon) {
- sc->hw_busy_count = 0;
- ath_start_rx_poll(sc, 3);
+ if (ath_is_mybeacon(common, hdr)) {
+ RX_STAT_INC(rx_beacons);
+ rx_stats->is_mybeacon = true;
}
- if (ath9k_process_rate(common, hw, rx_stats, rx_status)) {
- ret =-EINVAL;
- goto exit;
- }
+ /*
+ * This shouldn't happen, but have a safety check anyway.
+ */
+ if (WARN_ON(!ah->curchan))
+ return -EINVAL;
+
+ if (ath9k_process_rate(common, hw, rx_stats, rx_status))
+ return -EINVAL;
ath9k_process_rssi(common, hw, rx_stats, rx_status);
- rx_status->band = hw->conf.chandef.chan->band;
- rx_status->freq = hw->conf.chandef.chan->center_freq;
+ rx_status->band = ah->curchan->chan->band;
+ rx_status->freq = ah->curchan->chan->center_freq;
rx_status->antenna = rx_stats->rs_antenna;
rx_status->flag |= RX_FLAG_MACTIME_END;
sc->rx.num_pkts++;
#endif
-exit:
- sc->rx.discard_next = false;
- return ret;
+ return 0;
+
+corrupt:
+ sc->rx.discard_next = rx_stats->rs_more;
+ return -EINVAL;
}
static void ath9k_rx_skb_postprocess(struct ath_common *common,
spin_unlock_irqrestore(&sc->sc_pm_lock, flags);
ath9k_antenna_check(sc, &rs);
-
ath9k_apply_ampdu_details(sc, &rs, rxs);
+ ath_debug_rate_stats(sc, &rs, skb);
ieee80211_rx(hw, skb);
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