diff options
Diffstat (limited to 'drivers/net/wireless/ath/ath9k/rc.c')
| -rw-r--r-- | drivers/net/wireless/ath/ath9k/rc.c | 74 |
1 files changed, 34 insertions, 40 deletions
diff --git a/drivers/net/wireless/ath/ath9k/rc.c b/drivers/net/wireless/ath/ath9k/rc.c index 4c0d36a6980..c04a6c3cac7 100644 --- a/drivers/net/wireless/ath/ath9k/rc.c +++ b/drivers/net/wireless/ath/ath9k/rc.c @@ -1,6 +1,6 @@ /* * Copyright (c) 2004 Video54 Technologies, Inc. - * Copyright (c) 2004-2009 Atheros Communications, Inc. + * Copyright (c) 2004-2011 Atheros Communications, Inc. * * Permission to use, copy, modify, and/or distribute this software for any * purpose with or without fee is hereby granted, provided that the above @@ -379,7 +379,30 @@ static const struct ath_rate_table ar5416_11g_ratetable = { }; static int ath_rc_get_rateindex(const struct ath_rate_table *rate_table, - struct ieee80211_tx_rate *rate); + struct ieee80211_tx_rate *rate) +{ + int rix = 0, i = 0; + static const int mcs_rix_off[] = { 7, 15, 20, 21, 22, 23 }; + + if (!(rate->flags & IEEE80211_TX_RC_MCS)) + return rate->idx; + + while (i < ARRAY_SIZE(mcs_rix_off) && rate->idx > mcs_rix_off[i]) { + rix++; i++; + } + + rix += rate->idx + rate_table->mcs_start; + + if ((rate->flags & IEEE80211_TX_RC_40_MHZ_WIDTH) && + (rate->flags & IEEE80211_TX_RC_SHORT_GI)) + rix = rate_table->info[rix].ht_index; + else if (rate->flags & IEEE80211_TX_RC_SHORT_GI) + rix = rate_table->info[rix].sgi_index; + else if (rate->flags & IEEE80211_TX_RC_40_MHZ_WIDTH) + rix = rate_table->info[rix].cw40index; + + return rix; +} static void ath_rc_sort_validrates(const struct ath_rate_table *rate_table, struct ath_rate_priv *ath_rc_priv) @@ -533,7 +556,7 @@ static u8 ath_rc_setvalid_rates(struct ath_rate_priv *ath_rc_priv, [valid_rate_count] = j; ath_rc_priv->valid_phy_ratecnt[phy] += 1; ath_rc_set_valid_rate_idx(ath_rc_priv, j, 1); - hi = A_MAX(hi, j); + hi = max(hi, j); } } } @@ -569,7 +592,7 @@ static u8 ath_rc_setvalid_htrates(struct ath_rate_priv *ath_rc_priv, [ath_rc_priv->valid_phy_ratecnt[phy]] = j; ath_rc_priv->valid_phy_ratecnt[phy] += 1; ath_rc_set_valid_rate_idx(ath_rc_priv, j, 1); - hi = A_MAX(hi, j); + hi = max(hi, j); } } @@ -689,7 +712,8 @@ static void ath_rc_rate_set_series(const struct ath_rate_table *rate_table, if (WLAN_RC_PHY_HT(rate_table->info[rix].phy)) { rate->flags |= IEEE80211_TX_RC_MCS; - if (WLAN_RC_PHY_40(rate_table->info[rix].phy)) + if (WLAN_RC_PHY_40(rate_table->info[rix].phy) && + conf_is_ht40(&txrc->hw->conf)) rate->flags |= IEEE80211_TX_RC_40_MHZ_WIDTH; if (WLAN_RC_PHY_SGI(rate_table->info[rix].phy)) rate->flags |= IEEE80211_TX_RC_SHORT_GI; @@ -854,14 +878,13 @@ static void ath_get_rate(void *priv, struct ieee80211_sta *sta, void *priv_sta, ath_rc_rate_set_rtscts(sc, rate_table, tx_info); } -static bool ath_rc_update_per(struct ath_softc *sc, +static void ath_rc_update_per(struct ath_softc *sc, const struct ath_rate_table *rate_table, struct ath_rate_priv *ath_rc_priv, struct ieee80211_tx_info *tx_info, int tx_rate, int xretries, int retries, u32 now_msec) { - bool state_change = false; int count, n_bad_frames; u8 last_per; static const u32 nretry_to_per_lookup[10] = { @@ -992,8 +1015,6 @@ static bool ath_rc_update_per(struct ath_softc *sc, } } - - return state_change; } static void ath_debug_stat_retries(struct ath_rate_priv *rc, int rix, @@ -1017,7 +1038,6 @@ static void ath_rc_update_ht(struct ath_softc *sc, u32 now_msec = jiffies_to_msecs(jiffies); int rate; u8 last_per; - bool state_change = false; const struct ath_rate_table *rate_table = ath_rc_priv->rate_table; int size = ath_rc_priv->rate_table_size; @@ -1027,9 +1047,9 @@ static void ath_rc_update_ht(struct ath_softc *sc, last_per = ath_rc_priv->per[tx_rate]; /* Update PER first */ - state_change = ath_rc_update_per(sc, rate_table, ath_rc_priv, - tx_info, tx_rate, xretries, - retries, now_msec); + ath_rc_update_per(sc, rate_table, ath_rc_priv, + tx_info, tx_rate, xretries, + retries, now_msec); /* * If this rate looks bad (high PER) then stop using it for @@ -1083,32 +1103,6 @@ static void ath_rc_update_ht(struct ath_softc *sc, } -static int ath_rc_get_rateindex(const struct ath_rate_table *rate_table, - struct ieee80211_tx_rate *rate) -{ - int rix = 0, i = 0; - static const int mcs_rix_off[] = { 7, 15, 20, 21, 22, 23 }; - - if (!(rate->flags & IEEE80211_TX_RC_MCS)) - return rate->idx; - - while (rate->idx > mcs_rix_off[i] && - i < ARRAY_SIZE(mcs_rix_off)) { - rix++; i++; - } - - rix += rate->idx + rate_table->mcs_start; - - if ((rate->flags & IEEE80211_TX_RC_40_MHZ_WIDTH) && - (rate->flags & IEEE80211_TX_RC_SHORT_GI)) - rix = rate_table->info[rix].ht_index; - else if (rate->flags & IEEE80211_TX_RC_SHORT_GI) - rix = rate_table->info[rix].sgi_index; - else if (rate->flags & IEEE80211_TX_RC_40_MHZ_WIDTH) - rix = rate_table->info[rix].cw40index; - - return rix; -} static void ath_rc_tx_status(struct ath_softc *sc, struct ath_rate_priv *ath_rc_priv, @@ -1232,7 +1226,7 @@ static void ath_rc_init(struct ath_softc *sc, ht_mcs, ath_rc_priv->ht_cap); } - hi = A_MAX(hi, hthi); + hi = max(hi, hthi); } ath_rc_priv->rate_table_size = hi + 1; |