ath9k: properly use the mac80211 rate control api

This patch changes ath9k to pass proper MCS indexes and flags
between the RC and the rest of the driver code.
sc->cur_rate_table remains, as it's used by the RC code internally,
but the rest of the driver code no longer uses it, so a potential
new RC for ath9k would not have to update it.

Signed-off-by: Felix Fietkau <nbd@openwrt.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

diff --git a/drivers/net/wireless/ath/ath9k/ath9k.h b/drivers/net/wireless/ath/ath9k/ath9k.h
index 2a40fa2..9ff53c9 100644 (file)
--- a/drivers/net/wireless/ath/ath9k/ath9k.h
+++ b/drivers/net/wireless/ath/ath9k/ath9k.h
@@ -21,7 +21,6 @@
 #include <linux/device.h>
 #include <linux/leds.h>
 
-#include "rc.h"
 #include "debug.h"
 #include "common.h"
 
@@ -423,6 +422,7 @@ struct ath_led {
 #define SC_OP_BT_PRIORITY_DETECTED BIT(21)
 
 struct ath_wiphy;
+struct ath_rate_table;
 
 struct ath_softc {
        struct ieee80211_hw *hw;
@@ -467,9 +467,8 @@ struct ath_softc {
        struct ath_rx rx;
        struct ath_tx tx;
        struct ath_beacon beacon;
-       struct ieee80211_rate rates[IEEE80211_NUM_BANDS][ATH_RATE_MAX];
-       const struct ath_rate_table *hw_rate_table[ATH9K_MODE_MAX];
        const struct ath_rate_table *cur_rate_table;
+       enum wireless_mode cur_rate_mode;
        struct ieee80211_supported_band sbands[IEEE80211_NUM_BANDS];
 
        struct ath_led radio_led;

diff --git a/drivers/net/wireless/ath/ath9k/beacon.c b/drivers/net/wireless/ath/ath9k/beacon.c
index b10c884..cb774cc 100644 (file)
--- a/drivers/net/wireless/ath/ath9k/beacon.c
+++ b/drivers/net/wireless/ath/ath9k/beacon.c
@@ -65,9 +65,9 @@ static void ath_beacon_setup(struct ath_softc *sc, struct ath_vif *avp,
        struct ath_common *common = ath9k_hw_common(ah);
        struct ath_desc *ds;
        struct ath9k_11n_rate_series series[4];
-       const struct ath_rate_table *rt;
        int flags, antenna, ctsrate = 0, ctsduration = 0;
-       u8 rate;
+       struct ieee80211_supported_band *sband;
+       u8 rate = 0;
 
        ds = bf->bf_desc;
        flags = ATH9K_TXDESC_NOACK;
@@ -91,10 +91,10 @@ static void ath_beacon_setup(struct ath_softc *sc, struct ath_vif *avp,
 
        ds->ds_data = bf->bf_buf_addr;
 
-       rt = sc->cur_rate_table;
-       rate = rt->info[0].ratecode;
+       sband = &sc->sbands[common->hw->conf.channel->band];
+       rate = sband->bitrates[0].hw_value;
        if (sc->sc_flags & SC_OP_PREAMBLE_SHORT)
-               rate |= rt->info[0].short_preamble;
+               rate |= sband->bitrates[0].hw_value_short;
 
        ath9k_hw_set11n_txdesc(ah, ds, skb->len + FCS_LEN,
                               ATH9K_PKT_TYPE_BEACON,

diff --git a/drivers/net/wireless/ath/ath9k/debug.c b/drivers/net/wireless/ath/ath9k/debug.c
index 06f1fcf..608fa06 100644 (file)
--- a/drivers/net/wireless/ath/ath9k/debug.c
+++ b/drivers/net/wireless/ath/ath9k/debug.c
@@ -255,21 +255,11 @@ static const struct file_operations fops_interrupt = {
        .owner = THIS_MODULE
 };
 
-void ath_debug_stat_rc(struct ath_softc *sc, struct sk_buff *skb)
+void ath_debug_stat_rc(struct ath_softc *sc, int final_rate)
 {
-       struct ieee80211_tx_info *tx_info = IEEE80211_SKB_CB(skb);
-       struct ieee80211_tx_rate *rates = tx_info->status.rates;
-       int final_ts_idx = 0, idx, i;
        struct ath_rc_stats *stats;
 
-       for (i = 0; i < IEEE80211_TX_MAX_RATES; i++) {
-               if (!rates[i].count)
-                       break;
-
-               final_ts_idx = i;
-       }
-       idx = rates[final_ts_idx].idx;
-       stats = &sc->debug.stats.rcstats[idx];
+       stats = &sc->debug.stats.rcstats[final_rate];
        stats->success++;
 }
 

diff --git a/drivers/net/wireless/ath/ath9k/debug.h b/drivers/net/wireless/ath/ath9k/debug.h
index 749e85d..f282eee 100644 (file)
--- a/drivers/net/wireless/ath/ath9k/debug.h
+++ b/drivers/net/wireless/ath/ath9k/debug.h
@@ -18,6 +18,7 @@
 #define DEBUG_H
 
 #include "hw.h"
+#include "rc.h"
 
 struct ath_txq;
 struct ath_buf;
@@ -138,7 +139,7 @@ void ath9k_exit_debug(struct ath_hw *ah);
 int ath9k_debug_create_root(void);
 void ath9k_debug_remove_root(void);
 void ath_debug_stat_interrupt(struct ath_softc *sc, enum ath9k_int status);
-void ath_debug_stat_rc(struct ath_softc *sc, struct sk_buff *skb);
+void ath_debug_stat_rc(struct ath_softc *sc, int final_rate);
 void ath_debug_stat_tx(struct ath_softc *sc, struct ath_txq *txq,
                       struct ath_buf *bf);
 void ath_debug_stat_retries(struct ath_softc *sc, int rix,
@@ -170,7 +171,7 @@ static inline void ath_debug_stat_interrupt(struct ath_softc *sc,
 }
 
 static inline void ath_debug_stat_rc(struct ath_softc *sc,
-                                    struct sk_buff *skb)
+                                    int final_rate)
 {
 }
 

diff --git a/drivers/net/wireless/ath/ath9k/hw.c b/drivers/net/wireless/ath/ath9k/hw.c
index 53a7b98..63d8461 100644 (file)
--- a/drivers/net/wireless/ath/ath9k/hw.c
+++ b/drivers/net/wireless/ath/ath9k/hw.c
@@ -148,22 +148,19 @@ bool ath9k_get_channel_edges(struct ath_hw *ah,
 }
 
 u16 ath9k_hw_computetxtime(struct ath_hw *ah,
-                          const struct ath_rate_table *rates,
+                          u8 phy, int kbps,
                           u32 frameLen, u16 rateix,
                           bool shortPreamble)
 {
        u32 bitsPerSymbol, numBits, numSymbols, phyTime, txTime;
-       u32 kbps;
-
-       kbps = rates->info[rateix].ratekbps;
 
        if (kbps == 0)
                return 0;
 
-       switch (rates->info[rateix].phy) {
+       switch (phy) {
        case WLAN_RC_PHY_CCK:
                phyTime = CCK_PREAMBLE_BITS + CCK_PLCP_BITS;
-               if (shortPreamble && rates->info[rateix].short_preamble)
+               if (shortPreamble)
                        phyTime >>= 1;
                numBits = frameLen << 3;
                txTime = CCK_SIFS_TIME + phyTime + ((numBits * 1000) / kbps);
@@ -194,8 +191,7 @@ u16 ath9k_hw_computetxtime(struct ath_hw *ah,
                break;
        default:
                ath_print(ath9k_hw_common(ah), ATH_DBG_FATAL,
-                         "Unknown phy %u (rate ix %u)\n",
-                         rates->info[rateix].phy, rateix);
+                         "Unknown phy %u (rate ix %u)\n", phy, rateix);
                txTime = 0;
                break;
        }

diff --git a/drivers/net/wireless/ath/ath9k/hw.h b/drivers/net/wireless/ath/ath9k/hw.h
index a22ed76..b126342 100644 (file)
--- a/drivers/net/wireless/ath/ath9k/hw.h
+++ b/drivers/net/wireless/ath/ath9k/hw.h
@@ -647,7 +647,7 @@ bool ath9k_hw_wait(struct ath_hw *ah, u32 reg, u32 mask, u32 val, u32 timeout);
 u32 ath9k_hw_reverse_bits(u32 val, u32 n);
 bool ath9k_get_channel_edges(struct ath_hw *ah, u16 flags, u16 *low, u16 *high);
 u16 ath9k_hw_computetxtime(struct ath_hw *ah,
-                          const struct ath_rate_table *rates,
+                          u8 phy, int kbps,
                           u32 frameLen, u16 rateix, bool shortPreamble);
 void ath9k_hw_get_channel_centers(struct ath_hw *ah,
                                  struct ath9k_channel *chan,

diff --git a/drivers/net/wireless/ath/ath9k/mac.h b/drivers/net/wireless/ath/ath9k/mac.h
index fefb65d..29dfe14 100644 (file)
--- a/drivers/net/wireless/ath/ath9k/mac.h
+++ b/drivers/net/wireless/ath/ath9k/mac.h
@@ -616,7 +616,6 @@ enum ath9k_cipher {
 
 struct ath_hw;
 struct ath9k_channel;
-struct ath_rate_table;
 
 u32 ath9k_hw_gettxbuf(struct ath_hw *ah, u32 q);
 void ath9k_hw_puttxbuf(struct ath_hw *ah, u32 q, u32 txdp);

diff --git a/drivers/net/wireless/ath/ath9k/main.c b/drivers/net/wireless/ath/ath9k/main.c
index cbf5d2a..bd1e2de 100644 (file)
--- a/drivers/net/wireless/ath/ath9k/main.c
+++ b/drivers/net/wireless/ath/ath9k/main.c
@@ -104,37 +104,55 @@ static struct ieee80211_channel ath9k_5ghz_chantable[] = {
        CHAN5G(5825, 37), /* Channel 165 */
 };
 
+/* Atheros hardware rate code addition for short premble */
+#define SHPCHECK(__hw_rate, __flags) \
+       ((__flags & IEEE80211_RATE_SHORT_PREAMBLE) ? (__hw_rate | 0x04 ) : 0)
+
+#define RATE(_bitrate, _hw_rate, _flags) {              \
+       .bitrate        = (_bitrate),                   \
+       .flags          = (_flags),                     \
+       .hw_value       = (_hw_rate),                   \
+       .hw_value_short = (SHPCHECK(_hw_rate, _flags))  \
+}
+
+static struct ieee80211_rate ath9k_legacy_rates[] = {
+       RATE(10, 0x1b, 0),
+       RATE(20, 0x1a, IEEE80211_RATE_SHORT_PREAMBLE),
+       RATE(55, 0x19, IEEE80211_RATE_SHORT_PREAMBLE),
+       RATE(110, 0x18, IEEE80211_RATE_SHORT_PREAMBLE),
+       RATE(60, 0x0b, 0),
+       RATE(90, 0x0f, 0),
+       RATE(120, 0x0a, 0),
+       RATE(180, 0x0e, 0),
+       RATE(240, 0x09, 0),
+       RATE(360, 0x0d, 0),
+       RATE(480, 0x08, 0),
+       RATE(540, 0x0c, 0),
+};
+
 static void ath_cache_conf_rate(struct ath_softc *sc,
                                struct ieee80211_conf *conf)
 {
        switch (conf->channel->band) {
        case IEEE80211_BAND_2GHZ:
                if (conf_is_ht20(conf))
-                       sc->cur_rate_table =
-                         sc->hw_rate_table[ATH9K_MODE_11NG_HT20];
+                       sc->cur_rate_mode = ATH9K_MODE_11NG_HT20;
                else if (conf_is_ht40_minus(conf))
-                       sc->cur_rate_table =
-                         sc->hw_rate_table[ATH9K_MODE_11NG_HT40MINUS];
+                       sc->cur_rate_mode = ATH9K_MODE_11NG_HT40MINUS;
                else if (conf_is_ht40_plus(conf))
-                       sc->cur_rate_table =
-                         sc->hw_rate_table[ATH9K_MODE_11NG_HT40PLUS];
+                       sc->cur_rate_mode = ATH9K_MODE_11NG_HT40PLUS;
                else
-                       sc->cur_rate_table =
-                         sc->hw_rate_table[ATH9K_MODE_11G];
+                       sc->cur_rate_mode = ATH9K_MODE_11G;
                break;
        case IEEE80211_BAND_5GHZ:
                if (conf_is_ht20(conf))
-                       sc->cur_rate_table =
-                         sc->hw_rate_table[ATH9K_MODE_11NA_HT20];
+                       sc->cur_rate_mode = ATH9K_MODE_11NA_HT20;
                else if (conf_is_ht40_minus(conf))
-                       sc->cur_rate_table =
-                         sc->hw_rate_table[ATH9K_MODE_11NA_HT40MINUS];
+                       sc->cur_rate_mode = ATH9K_MODE_11NA_HT40MINUS;
                else if (conf_is_ht40_plus(conf))
-                       sc->cur_rate_table =
-                         sc->hw_rate_table[ATH9K_MODE_11NA_HT40PLUS];
+                       sc->cur_rate_mode = ATH9K_MODE_11NA_HT40PLUS;
                else
-                       sc->cur_rate_table =
-                         sc->hw_rate_table[ATH9K_MODE_11A];
+                       sc->cur_rate_mode = ATH9K_MODE_11A;
                break;
        default:
                BUG_ON(1);
@@ -190,51 +208,6 @@ static u8 parse_mpdudensity(u8 mpdudensity)
        }
 }
 
-static void ath_setup_rates(struct ath_softc *sc, enum ieee80211_band band)
-{
-       const struct ath_rate_table *rate_table = NULL;
-       struct ieee80211_supported_band *sband;
-       struct ieee80211_rate *rate;
-       int i, maxrates;
-
-       switch (band) {
-       case IEEE80211_BAND_2GHZ:
-               rate_table = sc->hw_rate_table[ATH9K_MODE_11G];
-               break;
-       case IEEE80211_BAND_5GHZ:
-               rate_table = sc->hw_rate_table[ATH9K_MODE_11A];
-               break;
-       default:
-               break;
-       }
-
-       if (rate_table == NULL)
-               return;
-
-       sband = &sc->sbands[band];
-       rate = sc->rates[band];
-
-       if (rate_table->rate_cnt > ATH_RATE_MAX)
-               maxrates = ATH_RATE_MAX;
-       else
-               maxrates = rate_table->rate_cnt;
-
-       for (i = 0; i < maxrates; i++) {
-               rate[i].bitrate = rate_table->info[i].ratekbps / 100;
-               rate[i].hw_value = rate_table->info[i].ratecode;
-               if (rate_table->info[i].short_preamble) {
-                       rate[i].hw_value_short = rate_table->info[i].ratecode |
-                               rate_table->info[i].short_preamble;
-                       rate[i].flags = IEEE80211_RATE_SHORT_PREAMBLE;
-               }
-               sband->n_bitrates++;
-
-               ath_print(ath9k_hw_common(sc->sc_ah), ATH_DBG_CONFIG,
-                         "Rate: %2dMbps, ratecode: %2d\n",
-                         rate[i].bitrate / 10, rate[i].hw_value);
-       }
-}
-
 static struct ath9k_channel *ath_get_curchannel(struct ath_softc *sc,
                                                struct ieee80211_hw *hw)
 {
@@ -1701,12 +1674,6 @@ static int ath_init_softc(u16 devid, struct ath_softc *sc, u16 subsysid,
        /* default to MONITOR mode */
        sc->sc_ah->opmode = NL80211_IFTYPE_MONITOR;
 
-       /* Setup rate tables */
-
-       ath_rate_attach(sc);
-       ath_setup_rates(sc, IEEE80211_BAND_2GHZ);
-       ath_setup_rates(sc, IEEE80211_BAND_5GHZ);
-
        /*
         * Allocate hardware transmit queues: one queue for
         * beacon frames and one data queue for each QoS
@@ -1827,19 +1794,22 @@ static int ath_init_softc(u16 devid, struct ath_softc *sc, u16 subsysid,
        /* setup channels and rates */
 
        sc->sbands[IEEE80211_BAND_2GHZ].channels = ath9k_2ghz_chantable;
-       sc->sbands[IEEE80211_BAND_2GHZ].bitrates =
-               sc->rates[IEEE80211_BAND_2GHZ];
        sc->sbands[IEEE80211_BAND_2GHZ].band = IEEE80211_BAND_2GHZ;
        sc->sbands[IEEE80211_BAND_2GHZ].n_channels =
                ARRAY_SIZE(ath9k_2ghz_chantable);
+       sc->sbands[IEEE80211_BAND_2GHZ].bitrates = ath9k_legacy_rates;
+       sc->sbands[IEEE80211_BAND_2GHZ].n_bitrates =
+               ARRAY_SIZE(ath9k_legacy_rates);
 
        if (test_bit(ATH9K_MODE_11A, sc->sc_ah->caps.wireless_modes)) {
                sc->sbands[IEEE80211_BAND_5GHZ].channels = ath9k_5ghz_chantable;
-               sc->sbands[IEEE80211_BAND_5GHZ].bitrates =
-                       sc->rates[IEEE80211_BAND_5GHZ];
                sc->sbands[IEEE80211_BAND_5GHZ].band = IEEE80211_BAND_5GHZ;
                sc->sbands[IEEE80211_BAND_5GHZ].n_channels =
                        ARRAY_SIZE(ath9k_5ghz_chantable);
+               sc->sbands[IEEE80211_BAND_5GHZ].bitrates =
+                       ath9k_legacy_rates + 4;
+               sc->sbands[IEEE80211_BAND_5GHZ].n_bitrates =
+                       ARRAY_SIZE(ath9k_legacy_rates) - 4;
        }
 
        switch (ah->btcoex_hw.scheme) {

diff --git a/drivers/net/wireless/ath/ath9k/rc.c b/drivers/net/wireless/ath/ath9k/rc.c
index 1d96777..66d3004 100644 (file)
--- a/drivers/net/wireless/ath/ath9k/rc.c
+++ b/drivers/net/wireless/ath/ath9k/rc.c
@@ -19,132 +19,133 @@
 
 static const struct ath_rate_table ar5416_11na_ratetable = {
        42,
+       8, /* MCS start */
        {
                { VALID, VALID, WLAN_RC_PHY_OFDM, 6000, /* 6 Mb */
-                       5400, 0x0b, 0x00, 12,
+                       5400, 0, 0x00, 12,
                        0, 0, 0, 0, 0, 0 },
                { VALID, VALID, WLAN_RC_PHY_OFDM, 9000, /* 9 Mb */
-                       7800,  0x0f, 0x00, 18,
+                       7800,  1, 0x00, 18,
                        0, 1, 1, 1, 1, 0 },
                { VALID, VALID, WLAN_RC_PHY_OFDM, 12000, /* 12 Mb */
-                       10000, 0x0a, 0x00, 24,
+                       10000, 2, 0x00, 24,
                        2, 2, 2, 2, 2, 0 },
                { VALID, VALID, WLAN_RC_PHY_OFDM, 18000, /* 18 Mb */
-                       13900, 0x0e, 0x00, 36,
+                       13900, 3, 0x00, 36,
                        2,  3, 3, 3, 3, 0 },
                { VALID, VALID, WLAN_RC_PHY_OFDM, 24000, /* 24 Mb */
-                       17300, 0x09, 0x00, 48,
+                       17300, 4, 0x00, 48,
                        4,  4, 4, 4, 4, 0 },
                { VALID, VALID, WLAN_RC_PHY_OFDM, 36000, /* 36 Mb */
-                       23000, 0x0d, 0x00, 72,
+                       23000, 5, 0x00, 72,
                        4,  5, 5, 5, 5, 0 },
                { VALID, VALID, WLAN_RC_PHY_OFDM, 48000, /* 48 Mb */
-                       27400, 0x08, 0x00, 96,
+                       27400, 6, 0x00, 96,
                        4,  6, 6, 6, 6, 0 },
                { VALID, VALID, WLAN_RC_PHY_OFDM, 54000, /* 54 Mb */
-                       29300, 0x0c, 0x00, 108,
+                       29300, 7, 0x00, 108,
                        4,  7, 7, 7, 7, 0 },
                { VALID_2040, VALID_2040, WLAN_RC_PHY_HT_20_SS, 6500, /* 6.5 Mb */
-                       6400, 0x80, 0x00, 0,
+                       6400, 0, 0x00, 0,
                        0, 8, 24, 8, 24, 3216 },
                { VALID_20, VALID_20, WLAN_RC_PHY_HT_20_SS, 13000, /* 13 Mb */
-                       12700, 0x81, 0x00, 1,
+                       12700, 1, 0x00, 1,
                        2, 9, 25, 9, 25, 6434 },
                { VALID_20, VALID_20, WLAN_RC_PHY_HT_20_SS, 19500, /* 19.5 Mb */
-                       18800, 0x82, 0x00, 2,
+                       18800, 2, 0x00, 2,
                        2, 10, 26, 10, 26, 9650 },
                { VALID_20, VALID_20, WLAN_RC_PHY_HT_20_SS, 26000, /* 26 Mb */
-                       25000, 0x83, 0x00, 3,
+                       25000, 3, 0x00, 3,
                        4,  11, 27, 11, 27, 12868 },
                { VALID_20, VALID_20, WLAN_RC_PHY_HT_20_SS, 39000, /* 39 Mb */
-                       36700, 0x84, 0x00, 4,
+                       36700, 4, 0x00, 4,
                        4,  12, 28, 12, 28, 19304 },
                { INVALID, VALID_20, WLAN_RC_PHY_HT_20_SS, 52000, /* 52 Mb */
-                       48100, 0x85, 0x00, 5,
+                       48100, 5, 0x00, 5,
                        4,  13, 29, 13, 29, 25740 },
                { INVALID, VALID_20, WLAN_RC_PHY_HT_20_SS, 58500, /* 58.5 Mb */
-                       53500, 0x86, 0x00, 6,
+                       53500, 6, 0x00, 6,
                        4,  14, 30, 14, 30,  28956 },
                { INVALID, VALID_20, WLAN_RC_PHY_HT_20_SS, 65000, /* 65 Mb */
-                       59000, 0x87, 0x00, 7,
+                       59000, 7, 0x00, 7,
                        4,  15, 31, 15, 32, 32180 },
                { INVALID, INVALID, WLAN_RC_PHY_HT_20_DS, 13000, /* 13 Mb */
-                       12700, 0x88, 0x00,
+                       12700, 8, 0x00,
                        8, 3, 16, 33, 16, 33, 6430 },
                { INVALID, INVALID, WLAN_RC_PHY_HT_20_DS, 26000, /* 26 Mb */
-                       24800, 0x89, 0x00, 9,
+                       24800, 9, 0x00, 9,
                        2, 17, 34, 17, 34, 12860 },
                { INVALID, INVALID, WLAN_RC_PHY_HT_20_DS, 39000, /* 39 Mb */
-                       36600, 0x8a, 0x00, 10,
+                       36600, 10, 0x00, 10,
                        2, 18, 35, 18, 35, 19300 },
                { VALID_20, INVALID, WLAN_RC_PHY_HT_20_DS, 52000, /* 52 Mb */
-                       48100, 0x8b, 0x00, 11,
+                       48100, 11, 0x00, 11,
                        4,  19, 36, 19, 36, 25736 },
                { VALID_20, INVALID, WLAN_RC_PHY_HT_20_DS, 78000, /* 78 Mb */
-                       69500, 0x8c, 0x00, 12,
+                       69500, 12, 0x00, 12,
                        4,  20, 37, 20, 37, 38600 },
                { VALID_20, INVALID, WLAN_RC_PHY_HT_20_DS, 104000, /* 104 Mb */
-                       89500, 0x8d, 0x00, 13,
+                       89500, 13, 0x00, 13,
                        4,  21, 38, 21, 38, 51472 },
                { VALID_20, INVALID, WLAN_RC_PHY_HT_20_DS, 117000, /* 117 Mb */
-                       98900, 0x8e, 0x00, 14,
+                       98900, 14, 0x00, 14,
                        4,  22, 39, 22, 39, 57890 },
                { VALID_20, INVALID, WLAN_RC_PHY_HT_20_DS, 130000, /* 130 Mb */
-                       108300, 0x8f, 0x00, 15,
+                       108300, 15, 0x00, 15,
                        4,  23, 40, 23, 41, 64320 },
                { VALID_40, VALID_40, WLAN_RC_PHY_HT_40_SS, 13500, /* 13.5 Mb */
-                       13200, 0x80, 0x00, 0,
+                       13200, 0, 0x00, 0,
                        0, 8, 24, 24, 24, 6684 },
                { VALID_40, VALID_40, WLAN_RC_PHY_HT_40_SS, 27500, /* 27.0 Mb */
-                       25900, 0x81, 0x00, 1,
+                       25900, 1, 0x00, 1,
                        2, 9, 25, 25, 25, 13368 },
                { VALID_40, VALID_40, WLAN_RC_PHY_HT_40_SS, 40500, /* 40.5 Mb */
-                       38600, 0x82, 0x00, 2,
+                       38600, 2, 0x00, 2,
                        2, 10, 26, 26, 26, 20052 },
                { VALID_40, VALID_40, WLAN_RC_PHY_HT_40_SS, 54000, /* 54 Mb */
-                       49800, 0x83, 0x00, 3,
+                       49800, 3, 0x00, 3,
                        4,  11, 27, 27, 27, 26738 },
                { VALID_40, VALID_40, WLAN_RC_PHY_HT_40_SS, 81500, /* 81 Mb */
-                       72200, 0x84, 0x00, 4,
+                       72200, 4, 0x00, 4,
                        4,  12, 28, 28, 28, 40104 },
                { INVALID, VALID_40, WLAN_RC_PHY_HT_40_SS, 108000, /* 108 Mb */
-                       92900, 0x85, 0x00, 5,
+                       92900, 5, 0x00, 5,
                        4,  13, 29, 29, 29, 53476 },
                { INVALID, VALID_40, WLAN_RC_PHY_HT_40_SS, 121500, /* 121.5 Mb */
-                       102700, 0x86, 0x00, 6,
+                       102700, 6, 0x00, 6,
                        4,  14, 30, 30, 30, 60156 },
                { INVALID, VALID_40, WLAN_RC_PHY_HT_40_SS, 135000, /* 135 Mb */
-                       112000, 0x87, 0x00, 7,
+                       112000, 7, 0x00, 7,
                        4,  15, 31, 32, 32, 66840 },
                { INVALID, VALID_40, WLAN_RC_PHY_HT_40_SS_HGI, 150000, /* 150 Mb */
-                       122000, 0x87, 0x00, 7,
+                       122000, 7, 0x00, 7,
                        4,  15, 31, 32, 32, 74200 },
                { INVALID, INVALID, WLAN_RC_PHY_HT_40_DS, 27000, /* 27 Mb */
-                       25800, 0x88, 0x00, 8,
+                       25800, 8, 0x00, 8,
                        0, 16, 33, 33, 33, 13360 },
                { INVALID, INVALID, WLAN_RC_PHY_HT_40_DS, 54000, /* 54 Mb */
-                       49800, 0x89, 0x00, 9,
+                       49800, 9, 0x00, 9,
                        2, 17, 34, 34, 34, 26720 },
                { INVALID, INVALID, WLAN_RC_PHY_HT_40_DS, 81000, /* 81 Mb */
-                       71900, 0x8a, 0x00, 10,
+                       71900, 10, 0x00, 10,
                        2, 18, 35, 35, 35, 40080 },
                { VALID_40, INVALID, WLAN_RC_PHY_HT_40_DS, 108000, /* 108 Mb */
-                       92500, 0x8b, 0x00, 11,
+                       92500, 11, 0x00, 11,
                        4,  19, 36, 36, 36, 53440 },
                { VALID_40, INVALID, WLAN_RC_PHY_HT_40_DS, 162000, /* 162 Mb */
-                       130300, 0x8c, 0x00, 12,
+                       130300, 12, 0x00, 12,
                        4,  20, 37, 37, 37, 80160 },
                { VALID_40, INVALID, WLAN_RC_PHY_HT_40_DS, 216000, /* 216 Mb */
-                       162800, 0x8d, 0x00, 13,
+                       162800, 13, 0x00, 13,
                        4,  21, 38, 38, 38, 106880 },
                { VALID_40, INVALID, WLAN_RC_PHY_HT_40_DS, 243000, /* 243 Mb */
-                       178200, 0x8e, 0x00, 14,
+                       178200, 14, 0x00, 14,
                        4,  22, 39, 39, 39, 120240 },
                { VALID_40, INVALID, WLAN_RC_PHY_HT_40_DS, 270000, /* 270 Mb */
-                       192100, 0x8f, 0x00, 15,
+                       192100, 15, 0x00, 15,
                        4,  23, 40, 41, 41, 133600 },
                { VALID_40, INVALID, WLAN_RC_PHY_HT_40_DS_HGI, 300000, /* 300 Mb */
-                       207000, 0x8f, 0x00, 15,
+                       207000, 15, 0x00, 15,
                        4,  23, 40, 41, 41, 148400 },
        },
        50,  /* probe interval */
@@ -156,144 +157,145 @@ static const struct ath_rate_table ar5416_11na_ratetable = {
 
 static const struct ath_rate_table ar5416_11ng_ratetable = {
        46,
+       12, /* MCS start */
        {
                { VALID_ALL, VALID_ALL, WLAN_RC_PHY_CCK, 1000, /* 1 Mb */
-                       900, 0x1b, 0x00, 2,
+                       900, 0, 0x00, 2,
                        0, 0, 0, 0, 0, 0 },
                { VALID_ALL, VALID_ALL, WLAN_RC_PHY_CCK, 2000, /* 2 Mb */
-                       1900, 0x1a, 0x04, 4,
+                       1900, 1, 0x04, 4,
                        1, 1, 1, 1, 1, 0 },
                { VALID_ALL, VALID_ALL, WLAN_RC_PHY_CCK, 5500, /* 5.5 Mb */
-                       4900, 0x19, 0x04, 11,
+                       4900, 2, 0x04, 11,
                        2, 2, 2, 2, 2, 0 },
                { VALID_ALL, VALID_ALL, WLAN_RC_PHY_CCK, 11000, /* 11 Mb */
-                       8100, 0x18, 0x04, 22,
+                       8100, 3, 0x04, 22,
                        3, 3, 3, 3, 3, 0 },
                { INVALID, INVALID, WLAN_RC_PHY_OFDM, 6000, /* 6 Mb */
-                       5400, 0x0b, 0x00, 12,
+                       5400, 4, 0x00, 12,
                        4, 4, 4, 4, 4, 0 },
                { INVALID, INVALID, WLAN_RC_PHY_OFDM, 9000, /* 9 Mb */
-                       7800, 0x0f, 0x00, 18,
+                       7800, 5, 0x00, 18,
                        4, 5, 5, 5, 5, 0 },
                { VALID, VALID, WLAN_RC_PHY_OFDM, 12000, /* 12 Mb */
-                       10100, 0x0a, 0x00, 24,
+                       10100, 6, 0x00, 24,
                        6, 6, 6, 6, 6, 0 },
                { VALID, VALID, WLAN_RC_PHY_OFDM, 18000, /* 18 Mb */
-                       14100,  0x0e, 0x00, 36,
+                       14100, 7, 0x00, 36,
                        6, 7, 7, 7, 7, 0 },
                { VALID, VALID, WLAN_RC_PHY_OFDM, 24000, /* 24 Mb */
-                       17700, 0x09, 0x00, 48,
+                       17700, 8, 0x00, 48,
                        8,  8, 8, 8, 8, 0 },
                { VALID, VALID, WLAN_RC_PHY_OFDM, 36000, /* 36 Mb */
-                       23700, 0x0d, 0x00, 72,
+                       23700, 9, 0x00, 72,
                        8,  9, 9, 9, 9, 0 },
                { VALID, VALID, WLAN_RC_PHY_OFDM, 48000, /* 48 Mb */
-                       27400, 0x08, 0x00, 96,
+                       27400, 10, 0x00, 96,
                        8,  10, 10, 10, 10, 0 },
                { VALID, VALID, WLAN_RC_PHY_OFDM, 54000, /* 54 Mb */
-                       30900, 0x0c, 0x00, 108,
+                       30900, 11, 0x00, 108,
                        8,  11, 11, 11, 11, 0 },
                { INVALID, INVALID, WLAN_RC_PHY_HT_20_SS, 6500, /* 6.5 Mb */
-                       6400, 0x80, 0x00, 0,
+                       6400, 0, 0x00, 0,
                        4, 12, 28, 12, 28, 3216 },
                { VALID_20, VALID_20, WLAN_RC_PHY_HT_20_SS, 13000, /* 13 Mb */
-                       12700, 0x81, 0x00, 1,
+                       12700, 1, 0x00, 1,
                        6, 13, 29, 13, 29, 6434 },
                { VALID_20, VALID_20, WLAN_RC_PHY_HT_20_SS, 19500, /* 19.5 Mb */
-                       18800, 0x82, 0x00, 2,
+                       18800, 2, 0x00, 2,
                        6, 14, 30, 14, 30, 9650 },
                { VALID_20, VALID_20, WLAN_RC_PHY_HT_20_SS, 26000, /* 26 Mb */
-                       25000, 0x83, 0x00, 3,
+                       25000, 3, 0x00, 3,
                        8,  15, 31, 15, 31, 12868 },
                { VALID_20, VALID_20, WLAN_RC_PHY_HT_20_SS, 39000, /* 39 Mb */
-                       36700, 0x84, 0x00, 4,
+                       36700, 4, 0x00, 4,
                        8,  16, 32, 16, 32, 19304 },
                { INVALID, VALID_20, WLAN_RC_PHY_HT_20_SS, 52000, /* 52 Mb */
-                       48100, 0x85, 0x00, 5,
+                       48100, 5, 0x00, 5,
                        8,  17, 33, 17, 33, 25740 },
                { INVALID,  VALID_20, WLAN_RC_PHY_HT_20_SS, 58500, /* 58.5 Mb */
-                       53500, 0x86, 0x00, 6,
+                       53500, 6, 0x00, 6,
                        8,  18, 34, 18, 34, 28956 },
                { INVALID, VALID_20, WLAN_RC_PHY_HT_20_SS, 65000, /* 65 Mb */
-                       59000, 0x87, 0x00, 7,
+                       59000, 7, 0x00, 7,
                        8,  19, 35, 19, 36, 32180 },
                { INVALID, INVALID, WLAN_RC_PHY_HT_20_DS, 13000, /* 13 Mb */
-                       12700, 0x88, 0x00, 8,
+                       12700, 8, 0x00, 8,
                        4, 20, 37, 20, 37, 6430 },
                { INVALID, INVALID, WLAN_RC_PHY_HT_20_DS, 26000, /* 26 Mb */
-                       24800, 0x89, 0x00, 9,
+                       24800, 9, 0x00, 9,
                        6, 21, 38, 21, 38, 12860 },
                { INVALID, INVALID, WLAN_RC_PHY_HT_20_DS, 39000, /* 39 Mb */
-                       36600, 0x8a, 0x00, 10,
+                       36600, 10, 0x00, 10,
                        6, 22, 39, 22, 39, 19300 },
                { VALID_20, INVALID, WLAN_RC_PHY_HT_20_DS, 52000, /* 52 Mb */
-                       48100, 0x8b, 0x00, 11,
+                       48100, 11, 0x00, 11,
                        8,  23, 40, 23, 40, 25736 },
                { VALID_20, INVALID, WLAN_RC_PHY_HT_20_DS, 78000, /* 78 Mb */
-                       69500, 0x8c, 0x00, 12,
+                       69500, 12, 0x00, 12,
                        8,  24, 41, 24, 41, 38600 },
                { VALID_20, INVALID, WLAN_RC_PHY_HT_20_DS, 104000, /* 104 Mb */
-                       89500, 0x8d, 0x00, 13,
+                       89500, 13, 0x00, 13,
                        8,  25, 42, 25, 42, 51472 },
                { VALID_20, INVALID, WLAN_RC_PHY_HT_20_DS, 117000, /* 117 Mb */
-                       98900, 0x8e, 0x00, 14,
+                       98900, 14, 0x00, 14,
                        8,  26, 43, 26, 44, 57890 },
                { VALID_20, INVALID, WLAN_RC_PHY_HT_20_DS, 130000, /* 130 Mb */
-                       108300, 0x8f, 0x00, 15,
+                       108300, 15, 0x00, 15,
                        8,  27, 44, 27, 45, 64320 },
                { VALID_40, VALID_40, WLAN_RC_PHY_HT_40_SS, 13500, /* 13.5 Mb */
-                       13200, 0x80, 0x00, 0,
+                       13200, 0, 0x00, 0,
                        8, 12, 28, 28, 28, 6684 },
                { VALID_40, VALID_40, WLAN_RC_PHY_HT_40_SS, 27500, /* 27.0 Mb */
-                       25900, 0x81, 0x00, 1,
+                       25900, 1, 0x00, 1,
                        8, 13, 29, 29, 29, 13368 },
                { VALID_40, VALID_40, WLAN_RC_PHY_HT_40_SS, 40500, /* 40.5 Mb */
-                       38600, 0x82, 0x00, 2,
+                       38600, 2, 0x00, 2,
                        8, 14, 30, 30, 30, 20052 },
                { VALID_40, VALID_40, WLAN_RC_PHY_HT_40_SS, 54000, /* 54 Mb */
-                       49800, 0x83, 0x00, 3,
+                       49800, 3, 0x00, 3,
                        8,  15, 31, 31, 31, 26738 },
                { VALID_40, VALID_40, WLAN_RC_PHY_HT_40_SS, 81500, /* 81 Mb */
-                       72200, 0x84, 0x00, 4,
+                       72200, 4, 0x00, 4,
                        8,  16, 32, 32, 32, 40104 },
                { INVALID, VALID_40, WLAN_RC_PHY_HT_40_SS, 108000, /* 108 Mb */
-                       92900, 0x85, 0x00, 5,
+                       92900, 5, 0x00, 5,
                        8,  17, 33, 33, 33, 53476 },
                { INVALID,  VALID_40, WLAN_RC_PHY_HT_40_SS, 121500, /* 121.5 Mb */
-                       102700, 0x86, 0x00, 6,
+                       102700, 6, 0x00, 6,
                        8,  18, 34, 34, 34, 60156 },
                { INVALID, VALID_40, WLAN_RC_PHY_HT_40_SS, 135000, /* 135 Mb */
-                       112000, 0x87, 0x00, 7,
+                       112000, 7, 0x00, 7,
                        8,  19, 35, 36, 36, 66840 },
                { INVALID, VALID_40, WLAN_RC_PHY_HT_40_SS_HGI, 150000, /* 150 Mb */
-                       122000, 0x87, 0x00, 7,
+                       122000, 7, 0x00, 7,
                        8,  19, 35, 36, 36, 74200 },
                { INVALID, INVALID, WLAN_RC_PHY_HT_40_DS, 27000, /* 27 Mb */
-                       25800, 0x88, 0x00, 8,
+                       25800, 8, 0x00, 8,
                        8, 20, 37, 37, 37, 13360 },
                { INVALID, INVALID, WLAN_RC_PHY_HT_40_DS, 54000, /* 54 Mb */
-                       49800, 0x89, 0x00, 9,
+                       49800, 9, 0x00, 9,
                        8, 21, 38, 38, 38, 26720 },
                { INVALID, INVALID, WLAN_RC_PHY_HT_40_DS, 81000, /* 81 Mb */
-                       71900, 0x8a, 0x00, 10,
+                       71900, 10, 0x00, 10,
                        8, 22, 39, 39, 39, 40080 },
                { VALID_40, INVALID, WLAN_RC_PHY_HT_40_DS, 108000, /* 108 Mb */
-                       92500, 0x8b, 0x00, 11,
+                       92500, 11, 0x00, 11,
                        8,  23, 40, 40, 40, 53440 },
                { VALID_40, INVALID, WLAN_RC_PHY_HT_40_DS, 162000, /* 162 Mb */
-                       130300, 0x8c, 0x00, 12,
+                       130300, 12, 0x00, 12,
                        8,  24, 41, 41, 41, 80160 },
                { VALID_40, INVALID, WLAN_RC_PHY_HT_40_DS, 216000, /* 216 Mb */
-                       162800, 0x8d, 0x00, 13,
+                       162800, 13, 0x00, 13,
                        8,  25, 42, 42, 42, 106880 },
                { VALID_40, INVALID, WLAN_RC_PHY_HT_40_DS, 243000, /* 243 Mb */
-                       178200, 0x8e, 0x00, 14,
+                       178200, 14, 0x00, 14,
                        8,  26, 43, 43, 43, 120240 },
                { VALID_40, INVALID, WLAN_RC_PHY_HT_40_DS, 270000, /* 270 Mb */
-                       192100, 0x8f, 0x00, 15,
+                       192100, 15, 0x00, 15,
                        8,  27, 44, 45, 45, 133600 },
                { VALID_40, INVALID, WLAN_RC_PHY_HT_40_DS_HGI, 300000, /* 300 Mb */
-                       207000, 0x8f, 0x00, 15,
+                       207000, 15, 0x00, 15,
                        8,  27, 44, 45, 45, 148400 },
                },
        50,  /* probe interval */
@@ -302,30 +304,31 @@ static const struct ath_rate_table ar5416_11ng_ratetable = {
 
 static const struct ath_rate_table ar5416_11a_ratetable = {
        8,
+       0,
        {
                { VALID, VALID, WLAN_RC_PHY_OFDM, 6000, /* 6 Mb */
-                       5400, 0x0b, 0x00, (0x80|12),
+                       5400, 0, 0x00, 12,
                        0, 0, 0 },
                { VALID, VALID, WLAN_RC_PHY_OFDM, 9000, /* 9 Mb */
-                       7800, 0x0f, 0x00, 18,
+                       7800, 1, 0x00, 18,
                        0, 1, 0 },
                { VALID, VALID, WLAN_RC_PHY_OFDM, 12000, /* 12 Mb */
-                       10000, 0x0a, 0x00, (0x80|24),
+                       10000, 2, 0x00, 24,
                        2, 2, 0 },
                { VALID, VALID, WLAN_RC_PHY_OFDM, 18000, /* 18 Mb */
-                       13900, 0x0e, 0x00, 36,
+                       13900, 3, 0x00, 36,
                        2, 3, 0 },
                { VALID, VALID, WLAN_RC_PHY_OFDM, 24000, /* 24 Mb */
-                       17300, 0x09, 0x00, (0x80|48),
+                       17300, 4, 0x00, 48,
                        4,  4, 0 },
                { VALID, VALID, WLAN_RC_PHY_OFDM, 36000, /* 36 Mb */
-                       23000, 0x0d, 0x00, 72,
+                       23000, 5, 0x00, 72,
                        4,  5, 0 },
                { VALID, VALID, WLAN_RC_PHY_OFDM, 48000, /* 48 Mb */
-                       27400, 0x08, 0x00, 96,
+                       27400, 6, 0x00, 96,
                        4,  6, 0 },
                { VALID, VALID, WLAN_RC_PHY_OFDM, 54000, /* 54 Mb */
-                       29300, 0x0c, 0x00, 108,
+                       29300, 7, 0x00, 108,
                        4,  7, 0 },
        },
        50,  /* probe interval */
@@ -334,48 +337,63 @@ static const struct ath_rate_table ar5416_11a_ratetable = {
 
 static const struct ath_rate_table ar5416_11g_ratetable = {
        12,
+       0,
        {
                { VALID, VALID, WLAN_RC_PHY_CCK, 1000, /* 1 Mb */
-                       900, 0x1b, 0x00, 2,
+                       900, 0, 0x00, 2,
                        0, 0, 0 },
                { VALID, VALID, WLAN_RC_PHY_CCK, 2000, /* 2 Mb */
-                       1900, 0x1a, 0x04, 4,
+                       1900, 1, 0x04, 4,
                        1, 1, 0 },
                { VALID, VALID, WLAN_RC_PHY_CCK, 5500, /* 5.5 Mb */
-                       4900, 0x19, 0x04, 11,
+                       4900, 2, 0x04, 11,
                        2, 2, 0 },
                { VALID, VALID, WLAN_RC_PHY_CCK, 11000, /* 11 Mb */
-                       8100, 0x18, 0x04, 22,
+                       8100, 3, 0x04, 22,
                        3, 3, 0 },
                { INVALID, INVALID, WLAN_RC_PHY_OFDM, 6000, /* 6 Mb */
-                       5400, 0x0b, 0x00, 12,
+                       5400, 4, 0x00, 12,
                        4, 4, 0 },
                { INVALID, INVALID, WLAN_RC_PHY_OFDM, 9000, /* 9 Mb */
-                       7800, 0x0f, 0x00, 18,
+                       7800, 5, 0x00, 18,
                        4, 5, 0 },
                { VALID, VALID, WLAN_RC_PHY_OFDM, 12000, /* 12 Mb */
-                       10000, 0x0a, 0x00, 24,
+                       10000, 6, 0x00, 24,
                        6, 6, 0 },
                { VALID, VALID, WLAN_RC_PHY_OFDM, 18000, /* 18 Mb */
-                       13900, 0x0e, 0x00, 36,
+                       13900, 7, 0x00, 36,
                        6, 7, 0 },
                { VALID, VALID, WLAN_RC_PHY_OFDM, 24000, /* 24 Mb */
-                       17300, 0x09, 0x00, 48,
+                       17300, 8, 0x00, 48,
                        8,  8, 0 },
                { VALID, VALID, WLAN_RC_PHY_OFDM, 36000, /* 36 Mb */
-                       23000, 0x0d, 0x00, 72,
+                       23000, 9, 0x00, 72,
                        8,  9, 0 },
                { VALID, VALID, WLAN_RC_PHY_OFDM, 48000, /* 48 Mb */
-                       27400, 0x08, 0x00, 96,
+                       27400, 10, 0x00, 96,
                        8,  10, 0 },
                { VALID, VALID, WLAN_RC_PHY_OFDM, 54000, /* 54 Mb */
-                       29300, 0x0c, 0x00, 108,
+                       29300, 11, 0x00, 108,
                        8,  11, 0 },
        },
        50,  /* probe interval */
        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);
+
 static inline int8_t median(int8_t a, int8_t b, int8_t c)
 {
        if (a >= b) {
@@ -534,7 +552,7 @@ static u8 ath_rc_setvalid_rates(struct ath_rate_priv *ath_rc_priv,
                         * capflag matches one of the validity
                         * (VALID/VALID_20/VALID_40) flags */
 
-                       if (((rate & 0x7F) == (dot11rate & 0x7F)) &&
+                       if ((rate == dot11rate) &&
                            ((valid & WLAN_RC_CAP_MODE(capflag)) ==
                             WLAN_RC_CAP_MODE(capflag)) &&
                            !WLAN_RC_PHY_HT(phy)) {
@@ -576,8 +594,7 @@ static u8 ath_rc_setvalid_htrates(struct ath_rate_priv *ath_rc_priv,
                        u8 rate = rateset->rs_rates[i];
                        u8 dot11rate = rate_table->info[j].dot11rate;
 
-                       if (((rate & 0x7F) != (dot11rate & 0x7F)) ||
-                           !WLAN_RC_PHY_HT(phy) ||
+                       if ((rate != dot11rate) || !WLAN_RC_PHY_HT(phy) ||
                            !WLAN_RC_PHY_HT_VALID(valid, capflag))
                                continue;
 
@@ -696,18 +713,20 @@ static void ath_rc_rate_set_series(const struct ath_rate_table *rate_table,
                                   u8 tries, u8 rix, int rtsctsenable)
 {
        rate->count = tries;
-       rate->idx = rix;
+       rate->idx = rate_table->info[rix].ratecode;
 
        if (txrc->short_preamble)
                rate->flags |= IEEE80211_TX_RC_USE_SHORT_PREAMBLE;
        if (txrc->rts || rtsctsenable)
                rate->flags |= IEEE80211_TX_RC_USE_RTS_CTS;
-       if (WLAN_RC_PHY_40(rate_table->info[rix].phy))
-               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;
-       if (WLAN_RC_PHY_HT(rate_table->info[rix].phy))
+
+       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))
+                       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;
+       }
 }
 
 static void ath_rc_rate_set_rtscts(struct ath_softc *sc,
@@ -720,7 +739,7 @@ static void ath_rc_rate_set_rtscts(struct ath_softc *sc,
        /* get the cix for the lowest valid rix */
        for (i = 3; i >= 0; i--) {
                if (rates[i].count && (rates[i].idx >= 0)) {
-                       rix = rates[i].idx;
+                       rix = ath_rc_get_rateindex(rate_table, &rates[i]);
                        break;
                }
        }
@@ -1080,15 +1099,19 @@ static int ath_rc_get_rateindex(const struct ath_rate_table *rate_table,
 {
        int rix;
 
+       if (!(rate->flags & IEEE80211_TX_RC_MCS))
+               return rate->idx;
+
+       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[rate->idx].ht_index;
+               rix = rate_table->info[rix].ht_index;
        else if (rate->flags & IEEE80211_TX_RC_SHORT_GI)
-               rix = rate_table->info[rate->idx].sgi_index;
+               rix = rate_table->info[rix].sgi_index;
        else if (rate->flags & IEEE80211_TX_RC_40_MHZ_WIDTH)
-               rix = rate_table->info[rate->idx].cw40index;
+               rix = rate_table->info[rix].cw40index;
        else
-               rix = rate_table->info[rate->idx].base_index;
+               rix = rate_table->info[rix].base_index;
 
        return rix;
 }
@@ -1183,7 +1206,9 @@ struct ath_rate_table *ath_choose_rate_table(struct ath_softc *sc,
 
        ath_print(common, ATH_DBG_CONFIG,
                  "Choosing rate table for mode: %d\n", mode);
-       return sc->hw_rate_table[mode];
+
+       sc->cur_rate_mode = mode;
+       return hw_rate_table[mode];
 }
 
 static void ath_rc_init(struct ath_softc *sc,
@@ -1197,12 +1222,6 @@ static void ath_rc_init(struct ath_softc *sc,
        u8 *ht_mcs = (u8 *)&ath_rc_priv->neg_ht_rates;
        u8 i, j, k, hi = 0, hthi = 0;
 
-       if (!rate_table) {
-               ath_print(common, ATH_DBG_FATAL,
-                         "Rate table not initialized\n");
-               return;
-       }
-
        /* Initial rate table size. Will change depending
         * on the working rate set */
        ath_rc_priv->rate_table_size = RATE_TABLE_SIZE;
@@ -1357,7 +1376,8 @@ static void ath_tx_status(void *priv, struct ieee80211_supported_band *sband,
                }
        }
 
-       ath_debug_stat_rc(sc, skb);
+       ath_debug_stat_rc(sc, ath_rc_get_rateindex(sc->cur_rate_table,
+               &tx_info->status.rates[final_ts_idx]));
 }
 
 static void ath_rate_init(void *priv, struct ieee80211_supported_band *sband,
@@ -1365,7 +1385,7 @@ static void ath_rate_init(void *priv, struct ieee80211_supported_band *sband,
 {
        struct ath_softc *sc = priv;
        struct ath_rate_priv *ath_rc_priv = priv_sta;
-       const struct ath_rate_table *rate_table = NULL;
+       const struct ath_rate_table *rate_table;
        bool is_cw40, is_sgi40;
        int i, j = 0;
 
@@ -1397,11 +1417,9 @@ static void ath_rate_init(void *priv, struct ieee80211_supported_band *sband,
            (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 if (sc->sc_ah->opmode == NL80211_IFTYPE_AP) {
-               /* cur_rate_table would be set on init through config() */
-               rate_table = sc->cur_rate_table;
+                                     sta->ht_cap.ht_supported, is_cw40);
+       } else {
+               rate_table = hw_rate_table[sc->cur_rate_mode];
        }
 
        ath_rc_priv->ht_cap = ath_rc_build_ht_caps(sc, sta, is_cw40, is_sgi40);
@@ -1445,6 +1463,7 @@ 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];
                }
        }
 }
@@ -1497,26 +1516,6 @@ static struct rate_control_ops ath_rate_ops = {
        .free_sta = ath_rate_free_sta,
 };
 
-void ath_rate_attach(struct ath_softc *sc)
-{
-       sc->hw_rate_table[ATH9K_MODE_11A] =
-               &ar5416_11a_ratetable;
-       sc->hw_rate_table[ATH9K_MODE_11G] =
-               &ar5416_11g_ratetable;
-       sc->hw_rate_table[ATH9K_MODE_11NA_HT20] =
-               &ar5416_11na_ratetable;
-       sc->hw_rate_table[ATH9K_MODE_11NG_HT20] =
-               &ar5416_11ng_ratetable;
-       sc->hw_rate_table[ATH9K_MODE_11NA_HT40PLUS] =
-               &ar5416_11na_ratetable;
-       sc->hw_rate_table[ATH9K_MODE_11NA_HT40MINUS] =
-               &ar5416_11na_ratetable;
-       sc->hw_rate_table[ATH9K_MODE_11NG_HT40PLUS] =
-               &ar5416_11ng_ratetable;
-       sc->hw_rate_table[ATH9K_MODE_11NG_HT40MINUS] =
-               &ar5416_11ng_ratetable;
-}
-
 int ath_rate_control_register(void)
 {
        return ieee80211_rate_control_register(&ath_rate_ops);

diff --git a/drivers/net/wireless/ath/ath9k/rc.h b/drivers/net/wireless/ath/ath9k/rc.h
index 51f85ec..d68bc94 100644 (file)
--- a/drivers/net/wireless/ath/ath9k/rc.h
+++ b/drivers/net/wireless/ath/ath9k/rc.h
@@ -104,6 +104,7 @@ enum {
  */
 struct ath_rate_table {
        int rate_cnt;
+       int mcs_start;
        struct {
                int valid;
                int valid_single_stream;
@@ -179,8 +180,6 @@ enum ath9k_internal_frame_type {
        ATH9K_INT_UNPAUSE
 };
 
-void ath_rate_attach(struct ath_softc *sc);
-u8 ath_rate_findrateix(struct ath_softc *sc, u8 dot11_rate);
 int ath_rate_control_register(void);
 void ath_rate_control_unregister(void);
 

diff --git a/drivers/net/wireless/ath/ath9k/xmit.c b/drivers/net/wireless/ath/ath9k/xmit.c
index 745d919..2bb8c91 100644 (file)
--- a/drivers/net/wireless/ath/ath9k/xmit.c
+++ b/drivers/net/wireless/ath/ath9k/xmit.c
@@ -70,6 +70,29 @@ static int ath_tx_num_badfrms(struct ath_softc *sc, struct ath_buf *bf,
 static void ath_tx_rc_status(struct ath_buf *bf, struct ath_desc *ds,
                             int nbad, int txok, bool update_rc);
 
+enum {
+       MCS_DEFAULT,
+       MCS_HT40,
+       MCS_HT40_SGI,
+};
+
+static int ath_max_4ms_framelen[3][16] = {
+       [MCS_DEFAULT] = {
+               3216,  6434,  9650,  12868, 19304, 25740,  28956,  32180,
+               6430,  12860, 19300, 25736, 38600, 51472,  57890,  64320,
+       },
+       [MCS_HT40] = {
+               6684,  13368, 20052, 26738, 40104, 53476,  60156,  66840,
+               13360, 26720, 40080, 53440, 80160, 106880, 120240, 133600,
+       },
+       [MCS_HT40_SGI] = {
+               /* TODO: Only MCS 7 and 15 updated, recalculate the rest */
+               6684,  13368, 20052, 26738, 40104, 53476,  60156,  74200,
+               13360, 26720, 40080, 53440, 80160, 106880, 120240, 148400,
+       }
+};
+
+
 /*********************/
 /* Aggregation logic */
 /*********************/
@@ -459,7 +482,6 @@ static void ath_tx_complete_aggr(struct ath_softc *sc, struct ath_txq *txq,
 static u32 ath_lookup_rate(struct ath_softc *sc, struct ath_buf *bf,
                           struct ath_atx_tid *tid)
 {
-       const struct ath_rate_table *rate_table = sc->cur_rate_table;
        struct sk_buff *skb;
        struct ieee80211_tx_info *tx_info;
        struct ieee80211_tx_rate *rates;
@@ -480,12 +502,20 @@ static u32 ath_lookup_rate(struct ath_softc *sc, struct ath_buf *bf,
 
        for (i = 0; i < 4; i++) {
                if (rates[i].count) {
-                       if (!WLAN_RC_PHY_HT(rate_table->info[rates[i].idx].phy)) {
+                       int modeidx;
+                       if (!(rates[i].flags & IEEE80211_TX_RC_MCS)) {
                                legacy = 1;
                                break;
                        }
 
-                       frmlen = rate_table->info[rates[i].idx].max_4ms_framelen;
+                       if (rates[i].flags & IEEE80211_TX_RC_SHORT_GI)
+                               modeidx = MCS_HT40_SGI;
+                       else if (rates[i].flags & IEEE80211_TX_RC_40_MHZ_WIDTH)
+                               modeidx = MCS_HT40;
+                       else
+                               modeidx = MCS_DEFAULT;
+
+                       frmlen = ath_max_4ms_framelen[modeidx][rates[i].idx];
                        max_4ms_framelen = min(max_4ms_framelen, frmlen);
                }
        }
@@ -523,12 +553,11 @@ static u32 ath_lookup_rate(struct ath_softc *sc, struct ath_buf *bf,
 static int ath_compute_num_delims(struct ath_softc *sc, struct ath_atx_tid *tid,
                                  struct ath_buf *bf, u16 frmlen)
 {
-       const struct ath_rate_table *rt = sc->cur_rate_table;
        struct sk_buff *skb = bf->bf_mpdu;
        struct ieee80211_tx_info *tx_info = IEEE80211_SKB_CB(skb);
        u32 nsymbits, nsymbols;
        u16 minlen;
-       u8 rc, flags, rix;
+       u8 flags, rix;
        int width, half_gi, ndelim, mindelim;
 
        /* Select standard number of delimiters based on frame length alone */
@@ -558,7 +587,6 @@ static int ath_compute_num_delims(struct ath_softc *sc, struct ath_atx_tid *tid,
 
        rix = tx_info->control.rates[0].idx;
        flags = tx_info->control.rates[0].flags;
-       rc = rt->info[rix].ratecode;
        width = (flags & IEEE80211_TX_RC_40_MHZ_WIDTH) ? 1 : 0;
        half_gi = (flags & IEEE80211_TX_RC_SHORT_GI) ? 1 : 0;
 
@@ -570,7 +598,7 @@ static int ath_compute_num_delims(struct ath_softc *sc, struct ath_atx_tid *tid,
        if (nsymbols == 0)
                nsymbols = 1;
 
-       nsymbits = bits_per_symbol[HT_RC_2_MCS(rc)][width];
+       nsymbits = bits_per_symbol[rix][width];
        minlen = (nsymbols * nsymbits) / BITS_PER_BYTE;
 
        if (frmlen < minlen) {
@@ -1425,22 +1453,14 @@ static int setup_tx_flags(struct ath_softc *sc, struct sk_buff *skb,
 static u32 ath_pkt_duration(struct ath_softc *sc, u8 rix, struct ath_buf *bf,
                            int width, int half_gi, bool shortPreamble)
 {
-       const struct ath_rate_table *rate_table = sc->cur_rate_table;
        u32 nbits, nsymbits, duration, nsymbols;
-       u8 rc;
        int streams, pktlen;
 
        pktlen = bf_isaggr(bf) ? bf->bf_al : bf->bf_frmlen;
-       rc = rate_table->info[rix].ratecode;
-
-       /* for legacy rates, use old function to compute packet duration */
-       if (!IS_HT_RATE(rc))
-               return ath9k_hw_computetxtime(sc->sc_ah, rate_table, pktlen,
-                                             rix, shortPreamble);
 
        /* find number of symbols: PLCP + data */
        nbits = (pktlen << 3) + OFDM_PLCP_BITS;
-       nsymbits = bits_per_symbol[HT_RC_2_MCS(rc)][width];
+       nsymbits = bits_per_symbol[rix][width];
        nsymbols = (nbits + nsymbits - 1) / nsymbits;
 
        if (!half_gi)
@@ -1449,7 +1469,7 @@ static u32 ath_pkt_duration(struct ath_softc *sc, u8 rix, struct ath_buf *bf,
                duration = SYMBOL_TIME_HALFGI(nsymbols);
 
        /* addup duration for legacy/ht training and signal fields */
-       streams = HT_RC_2_STREAMS(rc);
+       streams = HT_RC_2_STREAMS(rix);
        duration += L_STF + L_LTF + L_SIG + HT_SIG + HT_STF + HT_LTF(streams);
 
        return duration;
@@ -1458,11 +1478,11 @@ static u32 ath_pkt_duration(struct ath_softc *sc, u8 rix, struct ath_buf *bf,
 static void ath_buf_set_rate(struct ath_softc *sc, struct ath_buf *bf)
 {
        struct ath_common *common = ath9k_hw_common(sc->sc_ah);
-       const struct ath_rate_table *rt = sc->cur_rate_table;
        struct ath9k_11n_rate_series series[4];
        struct sk_buff *skb;
        struct ieee80211_tx_info *tx_info;
        struct ieee80211_tx_rate *rates;
+       const struct ieee80211_rate *rate;
        struct ieee80211_hdr *hdr;
        int i, flags = 0;
        u8 rix = 0, ctsrate = 0;
@@ -1481,11 +1501,10 @@ static void ath_buf_set_rate(struct ath_softc *sc, struct ath_buf *bf)
         * checking the BSS's global flag.
         * But for the rate series, IEEE80211_TX_RC_USE_SHORT_PREAMBLE is used.
         */
+       rate = ieee80211_get_rts_cts_rate(sc->hw, tx_info);
+       ctsrate = rate->hw_value;
        if (sc->sc_flags & SC_OP_PREAMBLE_SHORT)
-               ctsrate = rt->info[tx_info->control.rts_cts_rate_idx].ratecode |
-                       rt->info[tx_info->control.rts_cts_rate_idx].short_preamble;
-       else
-               ctsrate = rt->info[tx_info->control.rts_cts_rate_idx].ratecode;
+               ctsrate |= rate->hw_value_short;
 
        /*
         * ATH9K_TXDESC_RTSENA and ATH9K_TXDESC_CTSENA are mutually exclusive.
@@ -1508,6 +1527,9 @@ static void ath_buf_set_rate(struct ath_softc *sc, struct ath_buf *bf)
                flags &= ~(ATH9K_TXDESC_RTSENA);
 
        for (i = 0; i < 4; i++) {
+               bool is_40, is_sgi, is_sp;
+               int phy;
+
                if (!rates[i].count || (rates[i].idx < 0))
                        continue;
 
@@ -1515,12 +1537,6 @@ static void ath_buf_set_rate(struct ath_softc *sc, struct ath_buf *bf)
                series[i].Tries = rates[i].count;
                series[i].ChSel = common->tx_chainmask;
 
-               if (rates[i].flags & IEEE80211_TX_RC_USE_SHORT_PREAMBLE)
-                       series[i].Rate = rt->info[rix].ratecode |
-                               rt->info[rix].short_preamble;
-               else
-                       series[i].Rate = rt->info[rix].ratecode;
-
                if (rates[i].flags & IEEE80211_TX_RC_USE_RTS_CTS)
                        series[i].RateFlags |= ATH9K_RATESERIES_RTS_CTS;
                if (rates[i].flags & IEEE80211_TX_RC_40_MHZ_WIDTH)
@@ -1528,10 +1544,36 @@ static void ath_buf_set_rate(struct ath_softc *sc, struct ath_buf *bf)
                if (rates[i].flags & IEEE80211_TX_RC_SHORT_GI)
                        series[i].RateFlags |= ATH9K_RATESERIES_HALFGI;
 
-               series[i].PktDuration = ath_pkt_duration(sc, rix, bf,
-                        (rates[i].flags & IEEE80211_TX_RC_40_MHZ_WIDTH) != 0,
-                        (rates[i].flags & IEEE80211_TX_RC_SHORT_GI),
-                        (rates[i].flags & IEEE80211_TX_RC_USE_SHORT_PREAMBLE));
+               is_sgi = !!(rates[i].flags & IEEE80211_TX_RC_SHORT_GI);
+               is_40 = !!(rates[i].flags & IEEE80211_TX_RC_40_MHZ_WIDTH);
+               is_sp = !!(rates[i].flags & IEEE80211_TX_RC_USE_SHORT_PREAMBLE);
+
+               if (rates[i].flags & IEEE80211_TX_RC_MCS) {
+                       /* MCS rates */
+                       series[i].Rate = rix | 0x80;
+                       series[i].PktDuration = ath_pkt_duration(sc, rix, bf,
+                                is_40, is_sgi, is_sp);
+                       continue;
+               }
+
+               /* legcay rates */
+               if ((tx_info->band == IEEE80211_BAND_2GHZ) &&
+                   !(rate->flags & IEEE80211_RATE_ERP_G))
+                       phy = WLAN_RC_PHY_CCK;
+               else
+                       phy = WLAN_RC_PHY_OFDM;
+
+               rate = &sc->sbands[tx_info->band].bitrates[rates[i].idx];
+               series[i].Rate = rate->hw_value;
+               if (rate->hw_value_short) {
+                       if (rates[i].flags & IEEE80211_TX_RC_USE_SHORT_PREAMBLE)
+                               series[i].Rate |= rate->hw_value_short;
+               } else {
+                       is_sp = false;
+               }
+
+               series[i].PktDuration = ath9k_hw_computetxtime(sc->sc_ah,
+                       phy, rate->bitrate * 100, bf->bf_frmlen, rix, is_sp);
        }
 
        /* set dur_update_en for l-sig computation except for PS-Poll frames */
@@ -1920,8 +1962,10 @@ static void ath_tx_rc_status(struct ath_buf *bf, struct ath_desc *ds,
                }
        }
 
-       for (i = tx_rateindex + 1; i < hw->max_rates; i++)
+       for (i = tx_rateindex + 1; i < hw->max_rates; i++) {
                tx_info->status.rates[i].count = 0;
+               tx_info->status.rates[i].idx = -1;
+       }
 
        tx_info->status.rates[tx_rateindex].count = bf->bf_retries + 1;
 }