diff options
Diffstat (limited to 'drivers/net/wireless/ath/ath9k/rc.c')
-rw-r--r-- | drivers/net/wireless/ath/ath9k/rc.c | 200 |
1 files changed, 149 insertions, 51 deletions
diff --git a/drivers/net/wireless/ath/ath9k/rc.c b/drivers/net/wireless/ath/ath9k/rc.c index e49be73..0cee90c 100644 --- a/drivers/net/wireless/ath/ath9k/rc.c +++ b/drivers/net/wireless/ath/ath9k/rc.c @@ -302,7 +302,7 @@ static const struct ath_rate_table ar5416_11ng_ratetable = { [64] = { RC_INVALID, WLAN_RC_PHY_HT_40_TS, 243000, 205100, 20, 20, 8, 64, 65, 65 }, /* 243 Mb */ [65] = { RC_INVALID, WLAN_RC_PHY_HT_40_TS_HGI, 270000, - 224700, 20, 20, 8, 64, 65, 65 }, /* 170 Mb */ + 224700, 20, 20, 8, 64, 65, 65 }, /* 270 Mb */ [66] = { RC_HT_T_40, WLAN_RC_PHY_HT_40_TS, 324000, 263100, 21, 21, 8, 66, 67, 67 }, /* 324 Mb */ [67] = { RC_HT_T_40, WLAN_RC_PHY_HT_40_TS_HGI, 360000, @@ -378,17 +378,6 @@ static const struct ath_rate_table ar5416_11g_ratetable = { 0, /* Phy rates allowed initially */ }; -static const struct ath_rate_table *hw_rate_table[ATH9K_MODE_MAX] = { - [ATH9K_MODE_11A] = &ar5416_11a_ratetable, - [ATH9K_MODE_11G] = &ar5416_11g_ratetable, - [ATH9K_MODE_11NA_HT20] = &ar5416_11na_ratetable, - [ATH9K_MODE_11NG_HT20] = &ar5416_11ng_ratetable, - [ATH9K_MODE_11NA_HT40PLUS] = &ar5416_11na_ratetable, - [ATH9K_MODE_11NA_HT40MINUS] = &ar5416_11na_ratetable, - [ATH9K_MODE_11NG_HT40PLUS] = &ar5416_11ng_ratetable, - [ATH9K_MODE_11NG_HT40MINUS] = &ar5416_11ng_ratetable, -}; - static int ath_rc_get_rateindex(const struct ath_rate_table *rate_table, struct ieee80211_tx_rate *rate); @@ -791,7 +780,7 @@ static void ath_get_rate(void *priv, struct ieee80211_sta *sta, void *priv_sta, */ try_per_rate = 4; - rate_table = sc->cur_rate_table; + rate_table = ath_rc_priv->rate_table; rix = ath_rc_get_highest_rix(sc, ath_rc_priv, rate_table, &is_probe); /* @@ -1026,6 +1015,16 @@ 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, + int xretries, int retries, u8 per) +{ + struct ath_rc_stats *stats = &rc->rcstats[rix]; + + stats->xretries += xretries; + stats->retries += retries; + stats->per = per; +} + /* Update PER, RSSI and whatever else that the code thinks it is doing. If you can make sense of all this, you really need to go out more. */ @@ -1038,7 +1037,7 @@ static void ath_rc_update_ht(struct ath_softc *sc, int rate; u8 last_per; bool state_change = false; - const struct ath_rate_table *rate_table = sc->cur_rate_table; + const struct ath_rate_table *rate_table = ath_rc_priv->rate_table; int size = ath_rc_priv->rate_table_size; if ((tx_rate < 0) || (tx_rate > rate_table->rate_cnt)) @@ -1098,7 +1097,7 @@ static void ath_rc_update_ht(struct ath_softc *sc, ath_rc_priv->per_down_time = now_msec; } - ath_debug_stat_retries(sc, tx_rate, xretries, retries, + ath_debug_stat_retries(ath_rc_priv, tx_rate, xretries, retries, ath_rc_priv->per[tx_rate]); } @@ -1140,7 +1139,7 @@ static void ath_rc_tx_status(struct ath_softc *sc, u8 flags; u32 i = 0, rix; - rate_table = sc->cur_rate_table; + rate_table = ath_rc_priv->rate_table; /* * If the first rate is not the final index, there @@ -1190,39 +1189,23 @@ static void ath_rc_tx_status(struct ath_softc *sc, static const struct ath_rate_table *ath_choose_rate_table(struct ath_softc *sc, enum ieee80211_band band, - bool is_ht, - bool is_cw_40) + bool is_ht) { - int mode = 0; struct ath_common *common = ath9k_hw_common(sc->sc_ah); switch(band) { case IEEE80211_BAND_2GHZ: - mode = ATH9K_MODE_11G; if (is_ht) - mode = ATH9K_MODE_11NG_HT20; - if (is_cw_40) - mode = ATH9K_MODE_11NG_HT40PLUS; - break; + return &ar5416_11ng_ratetable; + return &ar5416_11g_ratetable; case IEEE80211_BAND_5GHZ: - mode = ATH9K_MODE_11A; if (is_ht) - mode = ATH9K_MODE_11NA_HT20; - if (is_cw_40) - mode = ATH9K_MODE_11NA_HT40PLUS; - break; + return &ar5416_11na_ratetable; + return &ar5416_11a_ratetable; default: ath_print(common, ATH_DBG_CONFIG, "Invalid band\n"); return NULL; } - - BUG_ON(mode >= ATH9K_MODE_MAX); - - ath_print(common, ATH_DBG_CONFIG, - "Choosing rate table for mode: %d\n", mode); - - sc->cur_rate_mode = mode; - return hw_rate_table[mode]; } static void ath_rc_init(struct ath_softc *sc, @@ -1293,7 +1276,7 @@ static void ath_rc_init(struct ath_softc *sc, ath_rc_priv->max_valid_rate = k; ath_rc_sort_validrates(rate_table, ath_rc_priv); ath_rc_priv->rate_max_phy = ath_rc_priv->valid_rate_index[k-4]; - sc->cur_rate_table = rate_table; + ath_rc_priv->rate_table = rate_table; ath_print(common, ATH_DBG_CONFIG, "RC Initialized with capabilities: 0x%x\n", @@ -1320,10 +1303,35 @@ static u8 ath_rc_build_ht_caps(struct ath_softc *sc, struct ieee80211_sta *sta, return caps; } +static bool ath_tx_aggr_check(struct ath_softc *sc, struct ath_node *an, + u8 tidno) +{ + struct ath_atx_tid *txtid; + + if (!(sc->sc_flags & SC_OP_TXAGGR)) + return false; + + txtid = ATH_AN_2_TID(an, tidno); + + if (!(txtid->state & (AGGR_ADDBA_COMPLETE | AGGR_ADDBA_PROGRESS))) + return true; + return false; +} + + /***********************************/ /* mac80211 Rate Control callbacks */ /***********************************/ +static void ath_debug_stat_rc(struct ath_rate_priv *rc, int final_rate) +{ + struct ath_rc_stats *stats; + + stats = &rc->rcstats[final_rate]; + stats->success++; +} + + static void ath_tx_status(void *priv, struct ieee80211_supported_band *sband, struct ieee80211_sta *sta, void *priv_sta, struct sk_buff *skb) @@ -1359,6 +1367,12 @@ static void ath_tx_status(void *priv, struct ieee80211_supported_band *sband, if (tx_info->flags & IEEE80211_TX_STAT_TX_FILTERED) return; + if (!(tx_info->flags & IEEE80211_TX_STAT_AMPDU)) { + tx_info->status.ampdu_ack_len = + (tx_info->flags & IEEE80211_TX_STAT_ACK ? 1 : 0); + tx_info->status.ampdu_len = 1; + } + /* * If an underrun error is seen assume it as an excessive retry only * if max frame trigger level has been reached (2 KB for singel stream, @@ -1397,8 +1411,9 @@ static void ath_tx_status(void *priv, struct ieee80211_supported_band *sband, } } - ath_debug_stat_rc(sc, ath_rc_get_rateindex(sc->cur_rate_table, - &tx_info->status.rates[final_ts_idx])); + ath_debug_stat_rc(ath_rc_priv, + ath_rc_get_rateindex(ath_rc_priv->rate_table, + &tx_info->status.rates[final_ts_idx])); } static void ath_rate_init(void *priv, struct ieee80211_supported_band *sband, @@ -1438,14 +1453,8 @@ static void ath_rate_init(void *priv, struct ieee80211_supported_band *sband, /* Choose rate table first */ - if ((sc->sc_ah->opmode == NL80211_IFTYPE_STATION) || - (sc->sc_ah->opmode == NL80211_IFTYPE_MESH_POINT) || - (sc->sc_ah->opmode == NL80211_IFTYPE_ADHOC)) { - rate_table = ath_choose_rate_table(sc, sband->band, - sta->ht_cap.ht_supported, is_cw40); - } else { - rate_table = hw_rate_table[sc->cur_rate_mode]; - } + rate_table = ath_choose_rate_table(sc, sband->band, + sta->ht_cap.ht_supported); ath_rc_priv->ht_cap = ath_rc_build_ht_caps(sc, sta, is_cw40, is_sgi); ath_rc_init(sc, priv_sta, sband, sta, rate_table); @@ -1485,8 +1494,7 @@ static void ath_rate_update(void *priv, struct ieee80211_supported_band *sband, if ((local_cw40 != oper_cw40) || (local_sgi != oper_sgi)) { rate_table = ath_choose_rate_table(sc, sband->band, - sta->ht_cap.ht_supported, - oper_cw40); + sta->ht_cap.ht_supported); ath_rc_priv->ht_cap = ath_rc_build_ht_caps(sc, sta, oper_cw40, oper_sgi); ath_rc_init(sc, priv_sta, sband, sta, rate_table); @@ -1494,11 +1502,98 @@ static void ath_rate_update(void *priv, struct ieee80211_supported_band *sband, ath_print(ath9k_hw_common(sc->sc_ah), ATH_DBG_CONFIG, "Operating HT Bandwidth changed to: %d\n", sc->hw->conf.channel_type); - sc->cur_rate_table = hw_rate_table[sc->cur_rate_mode]; } } } +#ifdef CONFIG_ATH9K_DEBUGFS + +static int ath9k_debugfs_open(struct inode *inode, struct file *file) +{ + file->private_data = inode->i_private; + return 0; +} + +static ssize_t read_file_rcstat(struct file *file, char __user *user_buf, + size_t count, loff_t *ppos) +{ + struct ath_rate_priv *rc = file->private_data; + char *buf; + unsigned int len = 0, max; + int i = 0; + ssize_t retval; + + if (rc->rate_table == NULL) + return 0; + + max = 80 + rc->rate_table->rate_cnt * 1024 + 1; + buf = kmalloc(max, GFP_KERNEL); + if (buf == NULL) + return -ENOMEM; + + len += sprintf(buf, "%6s %6s %6s " + "%10s %10s %10s %10s\n", + "HT", "MCS", "Rate", + "Success", "Retries", "XRetries", "PER"); + + for (i = 0; i < rc->rate_table->rate_cnt; i++) { + u32 ratekbps = rc->rate_table->info[i].ratekbps; + struct ath_rc_stats *stats = &rc->rcstats[i]; + char mcs[5]; + char htmode[5]; + int used_mcs = 0, used_htmode = 0; + + if (WLAN_RC_PHY_HT(rc->rate_table->info[i].phy)) { + used_mcs = snprintf(mcs, 5, "%d", + rc->rate_table->info[i].ratecode); + + if (WLAN_RC_PHY_40(rc->rate_table->info[i].phy)) + used_htmode = snprintf(htmode, 5, "HT40"); + else if (WLAN_RC_PHY_20(rc->rate_table->info[i].phy)) + used_htmode = snprintf(htmode, 5, "HT20"); + else + used_htmode = snprintf(htmode, 5, "????"); + } + + mcs[used_mcs] = '\0'; + htmode[used_htmode] = '\0'; + + len += snprintf(buf + len, max - len, + "%6s %6s %3u.%d: " + "%10u %10u %10u %10u\n", + htmode, + mcs, + ratekbps / 1000, + (ratekbps % 1000) / 100, + stats->success, + stats->retries, + stats->xretries, + stats->per); + } + + if (len > max) + len = max; + + retval = simple_read_from_buffer(user_buf, count, ppos, buf, len); + kfree(buf); + return retval; +} + +static const struct file_operations fops_rcstat = { + .read = read_file_rcstat, + .open = ath9k_debugfs_open, + .owner = THIS_MODULE +}; + +static void ath_rate_add_sta_debugfs(void *priv, void *priv_sta, + struct dentry *dir) +{ + struct ath_rate_priv *rc = priv_sta; + debugfs_create_file("rc_stats", S_IRUGO, dir, rc, &fops_rcstat); +} + +#endif /* CONFIG_ATH9K_DEBUGFS */ + static void *ath_rate_alloc(struct ieee80211_hw *hw, struct dentry *debugfsdir) { struct ath_wiphy *aphy = hw->priv; @@ -1545,6 +1640,9 @@ static struct rate_control_ops ath_rate_ops = { .free = ath_rate_free, .alloc_sta = ath_rate_alloc_sta, .free_sta = ath_rate_free_sta, +#ifdef CONFIG_ATH9K_DEBUGFS + .add_sta_debugfs = ath_rate_add_sta_debugfs, +#endif }; int ath_rate_control_register(void) |