diff options
Diffstat (limited to 'drivers/net')
| -rw-r--r-- | drivers/net/wireless/ath/ath5k/base.c | 11 | ||||
| -rw-r--r-- | drivers/net/wireless/iwlwifi/iwl-3945.c | 10 | ||||
| -rw-r--r-- | drivers/net/wireless/iwlwifi/iwl-3945.h | 1 | ||||
| -rw-r--r-- | drivers/net/wireless/iwlwifi/iwl-rx.c | 48 | ||||
| -rw-r--r-- | drivers/net/wireless/iwlwifi/iwl3945-base.c | 41 | ||||
| -rw-r--r-- | drivers/net/wireless/libertas_tf/main.c | 1 | ||||
| -rw-r--r-- | drivers/net/wireless/rtl818x/rtl8180_dev.c | 1 | ||||
| -rw-r--r-- | drivers/net/wireless/zd1211rw/zd_chip.c | 140 | ||||
| -rw-r--r-- | drivers/net/wireless/zd1211rw/zd_chip.h | 3 | ||||
| -rw-r--r-- | drivers/net/wireless/zd1211rw/zd_mac.c | 3 |
10 files changed, 4 insertions, 255 deletions
diff --git a/drivers/net/wireless/ath/ath5k/base.c b/drivers/net/wireless/ath/ath5k/base.c index 2a446a938249..e63b7c40d0ee 100644 --- a/drivers/net/wireless/ath/ath5k/base.c +++ b/drivers/net/wireless/ath/ath5k/base.c @@ -1903,17 +1903,6 @@ accept: rxs->noise = sc->ah->ah_noise_floor; rxs->signal = rxs->noise + rs.rs_rssi; - /* An rssi of 35 indicates you should be able use - * 54 Mbps reliably. A more elaborate scheme can be used - * here but it requires a map of SNR/throughput for each - * possible mode used */ - rxs->qual = rs.rs_rssi * 100 / 35; - - /* rssi can be more than 35 though, anything above that - * should be considered at 100% */ - if (rxs->qual > 100) - rxs->qual = 100; - rxs->antenna = rs.rs_antenna; rxs->rate_idx = ath5k_hw_to_driver_rix(sc, rs.rs_rate); rxs->flag |= ath5k_rx_decrypted(sc, ds, skb, &rs); diff --git a/drivers/net/wireless/iwlwifi/iwl-3945.c b/drivers/net/wireless/iwlwifi/iwl-3945.c index e413bd35bc41..234891d8cc10 100644 --- a/drivers/net/wireless/iwlwifi/iwl-3945.c +++ b/drivers/net/wireless/iwlwifi/iwl-3945.c @@ -681,19 +681,13 @@ static void iwl3945_rx_reply_rx(struct iwl_priv *priv, snr = rx_stats_sig_avg / rx_stats_noise_diff; rx_status.noise = rx_status.signal - iwl3945_calc_db_from_ratio(snr); - rx_status.qual = iwl3945_calc_sig_qual(rx_status.signal, - rx_status.noise); - - /* If noise info not available, calculate signal quality indicator (%) - * using just the dBm signal level. */ } else { rx_status.noise = priv->last_rx_noise; - rx_status.qual = iwl3945_calc_sig_qual(rx_status.signal, 0); } - IWL_DEBUG_STATS(priv, "Rssi %d noise %d qual %d sig_avg %d noise_diff %d\n", - rx_status.signal, rx_status.noise, rx_status.qual, + IWL_DEBUG_STATS(priv, "Rssi %d noise %d sig_avg %d noise_diff %d\n", + rx_status.signal, rx_status.noise, rx_stats_sig_avg, rx_stats_noise_diff); header = (struct ieee80211_hdr *)IWL_RX_DATA(pkt); diff --git a/drivers/net/wireless/iwlwifi/iwl-3945.h b/drivers/net/wireless/iwlwifi/iwl-3945.h index ecc23ec1f6a4..531fa125f5a6 100644 --- a/drivers/net/wireless/iwlwifi/iwl-3945.h +++ b/drivers/net/wireless/iwlwifi/iwl-3945.h @@ -222,7 +222,6 @@ struct iwl3945_ibss_seq { * *****************************************************************************/ extern int iwl3945_calc_db_from_ratio(int sig_ratio); -extern int iwl3945_calc_sig_qual(int rssi_dbm, int noise_dbm); extern void iwl3945_rx_replenish(void *data); extern void iwl3945_rx_queue_reset(struct iwl_priv *priv, struct iwl_rx_queue *rxq); extern unsigned int iwl3945_fill_beacon_frame(struct iwl_priv *priv, diff --git a/drivers/net/wireless/iwlwifi/iwl-rx.c b/drivers/net/wireless/iwlwifi/iwl-rx.c index f5c87e72660a..6f36b6e79f5e 100644 --- a/drivers/net/wireless/iwlwifi/iwl-rx.c +++ b/drivers/net/wireless/iwlwifi/iwl-rx.c @@ -650,47 +650,6 @@ void iwl_reply_statistics(struct iwl_priv *priv, } EXPORT_SYMBOL(iwl_reply_statistics); -#define PERFECT_RSSI (-20) /* dBm */ -#define WORST_RSSI (-95) /* dBm */ -#define RSSI_RANGE (PERFECT_RSSI - WORST_RSSI) - -/* Calculate an indication of rx signal quality (a percentage, not dBm!). - * See http://www.ces.clemson.edu/linux/signal_quality.shtml for info - * about formulas used below. */ -static int iwl_calc_sig_qual(int rssi_dbm, int noise_dbm) -{ - int sig_qual; - int degradation = PERFECT_RSSI - rssi_dbm; - - /* If we get a noise measurement, use signal-to-noise ratio (SNR) - * as indicator; formula is (signal dbm - noise dbm). - * SNR at or above 40 is a great signal (100%). - * Below that, scale to fit SNR of 0 - 40 dB within 0 - 100% indicator. - * Weakest usable signal is usually 10 - 15 dB SNR. */ - if (noise_dbm) { - if (rssi_dbm - noise_dbm >= 40) - return 100; - else if (rssi_dbm < noise_dbm) - return 0; - sig_qual = ((rssi_dbm - noise_dbm) * 5) / 2; - - /* Else use just the signal level. - * This formula is a least squares fit of data points collected and - * compared with a reference system that had a percentage (%) display - * for signal quality. */ - } else - sig_qual = (100 * (RSSI_RANGE * RSSI_RANGE) - degradation * - (15 * RSSI_RANGE + 62 * degradation)) / - (RSSI_RANGE * RSSI_RANGE); - - if (sig_qual > 100) - sig_qual = 100; - else if (sig_qual < 1) - sig_qual = 0; - - return sig_qual; -} - /* Calc max signal level (dBm) among 3 possible receivers */ static inline int iwl_calc_rssi(struct iwl_priv *priv, struct iwl_rx_phy_res *rx_resp) @@ -1101,11 +1060,8 @@ void iwl_rx_reply_rx(struct iwl_priv *priv, if (iwl_is_associated(priv) && !test_bit(STATUS_SCANNING, &priv->status)) { rx_status.noise = priv->last_rx_noise; - rx_status.qual = iwl_calc_sig_qual(rx_status.signal, - rx_status.noise); } else { rx_status.noise = IWL_NOISE_MEAS_NOT_AVAILABLE; - rx_status.qual = iwl_calc_sig_qual(rx_status.signal, 0); } /* Reset beacon noise level if not associated. */ @@ -1118,8 +1074,8 @@ void iwl_rx_reply_rx(struct iwl_priv *priv, iwl_dbg_report_frame(priv, phy_res, len, header, 1); #endif iwl_dbg_log_rx_data_frame(priv, len, header); - IWL_DEBUG_STATS_LIMIT(priv, "Rssi %d, noise %d, qual %d, TSF %llu\n", - rx_status.signal, rx_status.noise, rx_status.qual, + IWL_DEBUG_STATS_LIMIT(priv, "Rssi %d, noise %d, TSF %llu\n", + rx_status.signal, rx_status.noise, (unsigned long long)rx_status.mactime); /* diff --git a/drivers/net/wireless/iwlwifi/iwl3945-base.c b/drivers/net/wireless/iwlwifi/iwl3945-base.c index e5d8fa38432e..f8e4e4b18d02 100644 --- a/drivers/net/wireless/iwlwifi/iwl3945-base.c +++ b/drivers/net/wireless/iwlwifi/iwl3945-base.c @@ -1299,47 +1299,6 @@ int iwl3945_calc_db_from_ratio(int sig_ratio) return (int)ratio2dB[sig_ratio]; } -#define PERFECT_RSSI (-20) /* dBm */ -#define WORST_RSSI (-95) /* dBm */ -#define RSSI_RANGE (PERFECT_RSSI - WORST_RSSI) - -/* Calculate an indication of rx signal quality (a percentage, not dBm!). - * See http://www.ces.clemson.edu/linux/signal_quality.shtml for info - * about formulas used below. */ -int iwl3945_calc_sig_qual(int rssi_dbm, int noise_dbm) -{ - int sig_qual; - int degradation = PERFECT_RSSI - rssi_dbm; - - /* If we get a noise measurement, use signal-to-noise ratio (SNR) - * as indicator; formula is (signal dbm - noise dbm). - * SNR at or above 40 is a great signal (100%). - * Below that, scale to fit SNR of 0 - 40 dB within 0 - 100% indicator. - * Weakest usable signal is usually 10 - 15 dB SNR. */ - if (noise_dbm) { - if (rssi_dbm - noise_dbm >= 40) - return 100; - else if (rssi_dbm < noise_dbm) - return 0; - sig_qual = ((rssi_dbm - noise_dbm) * 5) / 2; - - /* Else use just the signal level. - * This formula is a least squares fit of data points collected and - * compared with a reference system that had a percentage (%) display - * for signal quality. */ - } else - sig_qual = (100 * (RSSI_RANGE * RSSI_RANGE) - degradation * - (15 * RSSI_RANGE + 62 * degradation)) / - (RSSI_RANGE * RSSI_RANGE); - - if (sig_qual > 100) - sig_qual = 100; - else if (sig_qual < 1) - sig_qual = 0; - - return sig_qual; -} - /** * iwl3945_rx_handle - Main entry function for receiving responses from uCode * diff --git a/drivers/net/wireless/libertas_tf/main.c b/drivers/net/wireless/libertas_tf/main.c index 019431d2f8a9..26a1abd5bb03 100644 --- a/drivers/net/wireless/libertas_tf/main.c +++ b/drivers/net/wireless/libertas_tf/main.c @@ -495,7 +495,6 @@ int lbtf_rx(struct lbtf_private *priv, struct sk_buff *skb) stats.band = IEEE80211_BAND_2GHZ; stats.signal = prxpd->snr; stats.noise = prxpd->nf; - stats.qual = prxpd->snr - prxpd->nf; /* Marvell rate index has a hole at value 4 */ if (prxpd->rx_rate > 4) --prxpd->rx_rate; diff --git a/drivers/net/wireless/rtl818x/rtl8180_dev.c b/drivers/net/wireless/rtl818x/rtl8180_dev.c index a1a3dd15c664..8a40a1439984 100644 --- a/drivers/net/wireless/rtl818x/rtl8180_dev.c +++ b/drivers/net/wireless/rtl818x/rtl8180_dev.c @@ -132,7 +132,6 @@ static void rtl8180_handle_rx(struct ieee80211_hw *dev) rx_status.antenna = (flags2 >> 15) & 1; /* TODO: improve signal/rssi reporting */ - rx_status.qual = flags2 & 0xFF; rx_status.signal = (flags2 >> 8) & 0x7F; /* XXX: is this correct? */ rx_status.rate_idx = (flags >> 20) & 0xF; diff --git a/drivers/net/wireless/zd1211rw/zd_chip.c b/drivers/net/wireless/zd1211rw/zd_chip.c index dfa1b9bc22c8..7ca95c414fa8 100644 --- a/drivers/net/wireless/zd1211rw/zd_chip.c +++ b/drivers/net/wireless/zd1211rw/zd_chip.c @@ -1325,151 +1325,11 @@ int zd_chip_set_basic_rates(struct zd_chip *chip, u16 cr_rates) return r; } -static int ofdm_qual_db(u8 status_quality, u8 zd_rate, unsigned int size) -{ - static const u16 constants[] = { - 715, 655, 585, 540, 470, 410, 360, 315, - 270, 235, 205, 175, 150, 125, 105, 85, - 65, 50, 40, 25, 15 - }; - - int i; - u32 x; - - /* It seems that their quality parameter is somehow per signal - * and is now transferred per bit. - */ - switch (zd_rate) { - case ZD_OFDM_RATE_6M: - case ZD_OFDM_RATE_12M: - case ZD_OFDM_RATE_24M: - size *= 2; - break; - case ZD_OFDM_RATE_9M: - case ZD_OFDM_RATE_18M: - case ZD_OFDM_RATE_36M: - case ZD_OFDM_RATE_54M: - size *= 4; - size /= 3; - break; - case ZD_OFDM_RATE_48M: - size *= 3; - size /= 2; - break; - default: - return -EINVAL; - } - - x = (10000 * status_quality)/size; - for (i = 0; i < ARRAY_SIZE(constants); i++) { - if (x > constants[i]) - break; - } - - switch (zd_rate) { - case ZD_OFDM_RATE_6M: - case ZD_OFDM_RATE_9M: - i += 3; - break; - case ZD_OFDM_RATE_12M: - case ZD_OFDM_RATE_18M: - i += 5; - break; - case ZD_OFDM_RATE_24M: - case ZD_OFDM_RATE_36M: - i += 9; - break; - case ZD_OFDM_RATE_48M: - case ZD_OFDM_RATE_54M: - i += 15; - break; - default: - return -EINVAL; - } - - return i; -} - -static int ofdm_qual_percent(u8 status_quality, u8 zd_rate, unsigned int size) -{ - int r; - - r = ofdm_qual_db(status_quality, zd_rate, size); - ZD_ASSERT(r >= 0); - if (r < 0) - r = 0; - - r = (r * 100)/29; - return r <= 100 ? r : 100; -} - -static unsigned int log10times100(unsigned int x) -{ - static const u8 log10[] = { - 0, - 0, 30, 47, 60, 69, 77, 84, 90, 95, 100, - 104, 107, 111, 114, 117, 120, 123, 125, 127, 130, - 132, 134, 136, 138, 139, 141, 143, 144, 146, 147, - 149, 150, 151, 153, 154, 155, 156, 157, 159, 160, - 161, 162, 163, 164, 165, 166, 167, 168, 169, 169, - 170, 171, 172, 173, 174, 174, 175, 176, 177, 177, - 178, 179, 179, 180, 181, 181, 182, 183, 183, 184, - 185, 185, 186, 186, 187, 188, 188, 189, 189, 190, - 190, 191, 191, 192, 192, 193, 193, 194, 194, 195, - 195, 196, 196, 197, 197, 198, 198, 199, 199, 200, - 200, 200, 201, 201, 202, 202, 202, 203, 203, 204, - 204, 204, 205, 205, 206, 206, 206, 207, 207, 207, - 208, 208, 208, 209, 209, 210, 210, 210, 211, 211, - 211, 212, 212, 212, 213, 213, 213, 213, 214, 214, - 214, 215, 215, 215, 216, 216, 216, 217, 217, 217, - 217, 218, 218, 218, 219, 219, 219, 219, 220, 220, - 220, 220, 221, 221, 221, 222, 222, 222, 222, 223, - 223, 223, 223, 224, 224, 224, 224, - }; - - return x < ARRAY_SIZE(log10) ? log10[x] : 225; -} - -enum { - MAX_CCK_EVM_DB = 45, -}; - -static int cck_evm_db(u8 status_quality) -{ - return (20 * log10times100(status_quality)) / 100; -} - -static int cck_snr_db(u8 status_quality) -{ - int r = MAX_CCK_EVM_DB - cck_evm_db(status_quality); - ZD_ASSERT(r >= 0); - return r; -} - -static int cck_qual_percent(u8 status_quality) -{ - int r; - - r = cck_snr_db(status_quality); - r = (100*r)/17; - return r <= 100 ? r : 100; -} - static inline u8 zd_rate_from_ofdm_plcp_header(const void *rx_frame) { return ZD_OFDM | zd_ofdm_plcp_header_rate(rx_frame); } -u8 zd_rx_qual_percent(const void *rx_frame, unsigned int size, - const struct rx_status *status) -{ - return (status->frame_status&ZD_RX_OFDM) ? - ofdm_qual_percent(status->signal_quality_ofdm, - zd_rate_from_ofdm_plcp_header(rx_frame), - size) : - cck_qual_percent(status->signal_quality_cck); -} - /** * zd_rx_rate - report zd-rate * @rx_frame - received frame diff --git a/drivers/net/wireless/zd1211rw/zd_chip.h b/drivers/net/wireless/zd1211rw/zd_chip.h index 9fd8f3508d66..f8bbf7d302ae 100644 --- a/drivers/net/wireless/zd1211rw/zd_chip.h +++ b/drivers/net/wireless/zd1211rw/zd_chip.h @@ -929,9 +929,6 @@ static inline int zd_get_beacon_interval(struct zd_chip *chip, u32 *interval) struct rx_status; -u8 zd_rx_qual_percent(const void *rx_frame, unsigned int size, - const struct rx_status *status); - u8 zd_rx_rate(const void *rx_frame, const struct rx_status *status); struct zd_mc_hash { diff --git a/drivers/net/wireless/zd1211rw/zd_mac.c b/drivers/net/wireless/zd1211rw/zd_mac.c index 8a243732c519..cc648efb8ede 100644 --- a/drivers/net/wireless/zd1211rw/zd_mac.c +++ b/drivers/net/wireless/zd1211rw/zd_mac.c @@ -828,9 +828,6 @@ int zd_mac_rx(struct ieee80211_hw *hw, const u8 *buffer, unsigned int length) stats.freq = zd_channels[_zd_chip_get_channel(&mac->chip) - 1].center_freq; stats.band = IEEE80211_BAND_2GHZ; stats.signal = status->signal_strength; - stats.qual = zd_rx_qual_percent(buffer, - length - sizeof(struct rx_status), - status); rate = zd_rx_rate(buffer, status); |