Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless-next-2.6

MAINTAINERS

@@ -2816,6 +2816,15 @@ T:	git git://git.kernel.org/pub/scm/linux/kernel/git/iwlwifi/iwlwifi-2.6.git
 S:	Supported
 F:	drivers/net/wireless/iwlwifi/
 
+INTEL WIRELESS MULTICOMM 3200 WIFI (iwmc3200wifi)
+M:	Samuel Ortiz <samuel.ortiz@intel.com>
+M:	Zhu Yi <yi.zhu@intel.com>
+M:	Intel Linux Wireless <ilw@linux.intel.com>
+L:	linux-wireless@vger.kernel.org
+S:	Supported
+W:	http://wireless.kernel.org/en/users/Drivers/iwmc3200wifi
+F:	drivers/net/wireless/iwmc3200wifi/
+
 IOC3 ETHERNET DRIVER
 M:	Ralf Baechle <ralf@linux-mips.org>
 L:	linux-mips@linux-mips.org

drivers/net/wireless/airo.c

@@ -4806,7 +4806,7 @@ static int airo_config_commit(struct net_device *dev,
 
 static inline int sniffing_mode(struct airo_info *ai)
 {
-	return le16_to_cpu(ai->config.rmode & RXMODE_MASK) >=
+	return (le16_to_cpu(ai->config.rmode) & le16_to_cpu(RXMODE_MASK)) >=
 		le16_to_cpu(RXMODE_RFMON);
 }
 

drivers/net/wireless/ath/ath9k/Kconfig

@@ -23,17 +23,12 @@ config ATH9K
 
 	  If you choose to build a module, it'll be called ath9k.
 
-if ATH_DEBUG
-
-config ATH9K_DEBUG
+config ATH9K_DEBUGFS
 	bool "Atheros ath9k debugging"
 	depends on ATH9K
 	---help---
-	  Say Y, if you need ath9k to display debug messages.
-	  Pass the debug mask as a module parameter:
-
-	  modprobe ath9k debug=0x00000200
+	  Say Y, if you need access to ath9k's statistics for
+	  interrupts, rate control, etc.
 
-	  Look in ath9k/debug.h for possible debug masks
+	  Also required for changing debug message flags at run time.
 
-endif # ATH_DEBUG

drivers/net/wireless/ath/ath9k/Makefile

@@ -7,7 +7,7 @@ ath9k-y +=	beacon.o \
 
 ath9k-$(CONFIG_PCI) += pci.o
 ath9k-$(CONFIG_ATHEROS_AR71XX) += ahb.o
-ath9k-$(CONFIG_ATH9K_DEBUG) += debug.o
+ath9k-$(CONFIG_ATH9K_DEBUGFS) += debug.o
 
 obj-$(CONFIG_ATH9K) += ath9k.o
 

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"
 
@@ -330,6 +329,7 @@ void ath_beacon_tasklet(unsigned long data);
 void ath_beacon_config(struct ath_softc *sc, struct ieee80211_vif *vif);
 int ath_beacon_alloc(struct ath_wiphy *aphy, struct ieee80211_vif *vif);
 void ath_beacon_return(struct ath_softc *sc, struct ath_vif *avp);
+int ath_beaconq_config(struct ath_softc *sc);
 
 /*******/
 /* ANI */
@@ -421,8 +421,11 @@ struct ath_led {
 #define SC_OP_WAIT_FOR_TX_ACK   BIT(18)
 #define SC_OP_BEACON_SYNC       BIT(19)
 #define SC_OP_BT_PRIORITY_DETECTED BIT(21)
+#define SC_OP_NULLFUNC_COMPLETED BIT(22)
+#define SC_OP_PS_ENABLED	BIT(23)
 
 struct ath_wiphy;
+struct ath_rate_table;
 
 struct ath_softc {
 	struct ieee80211_hw *hw;
@@ -467,9 +470,8 @@ 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;
@@ -484,7 +486,7 @@ struct ath_softc {
 
 	int beacon_interval;
 
-#ifdef CONFIG_ATH9K_DEBUG
+#ifdef CONFIG_ATH9K_DEBUGFS
 	struct ath9k_debug debug;
 #endif
 	struct ath_beacon_config cur_beacon_conf;

drivers/net/wireless/ath/ath9k/beacon.c

@@ -23,11 +23,12 @@
  *  the operating mode of the station (AP or AdHoc).  Parameters are AIFS
  *  settings and channel width min/max
 */
-static int ath_beaconq_config(struct ath_softc *sc)
+int ath_beaconq_config(struct ath_softc *sc)
 {
 	struct ath_hw *ah = sc->sc_ah;
 	struct ath_common *common = ath9k_hw_common(ah);
-	struct ath9k_tx_queue_info qi;
+	struct ath9k_tx_queue_info qi, qi_be;
+	int qnum;
 
 	ath9k_hw_get_txq_props(ah, sc->beacon.beaconq, &qi);
 	if (sc->sc_ah->opmode == NL80211_IFTYPE_AP) {
@@ -37,9 +38,12 @@ static int ath_beaconq_config(struct ath_softc *sc)
 		qi.tqi_cwmax = 0;
 	} else {
 		/* Adhoc mode; important thing is to use 2x cwmin. */
-		qi.tqi_aifs = sc->beacon.beacon_qi.tqi_aifs;
-		qi.tqi_cwmin = 2*sc->beacon.beacon_qi.tqi_cwmin;
-		qi.tqi_cwmax = sc->beacon.beacon_qi.tqi_cwmax;
+		qnum = ath_tx_get_qnum(sc, ATH9K_TX_QUEUE_DATA,
+				       ATH9K_WME_AC_BE);
+		ath9k_hw_get_txq_props(ah, qnum, &qi_be);
+		qi.tqi_aifs = qi_be.tqi_aifs;
+		qi.tqi_cwmin = 4*qi_be.tqi_cwmin;
+		qi.tqi_cwmax = qi_be.tqi_cwmax;
 	}
 
 	if (!ath9k_hw_set_txq_props(ah, sc->beacon.beaconq, &qi)) {
@@ -65,9 +69,9 @@ 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 +95,10 @@ 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,

drivers/net/wireless/ath/ath9k/common.c

@@ -181,8 +181,6 @@ static void ath9k_process_rssi(struct ath_common *common,
 					      ATH_RSSI_EP_MULTIPLIER);
 	if (rx_stats->rs_rssi < 0)
 		rx_stats->rs_rssi = 0;
-	else if (rx_stats->rs_rssi > 127)
-		rx_stats->rs_rssi = 127;
 
 	/* Update Beacon RSSI, this is used by ANI. */
 	if (ieee80211_is_beacon(fc))
@@ -238,16 +236,8 @@ void ath9k_cmn_rx_skb_postprocess(struct ath_common *common,
 	/* see if any padding is done by the hw and remove it */
 	hdr = (struct ieee80211_hdr *) skb->data;
 	hdrlen = ieee80211_get_hdrlen_from_skb(skb);
-	padpos = 24;
 	fc = hdr->frame_control;
-	if ((fc & cpu_to_le16(IEEE80211_FCTL_FROMDS|IEEE80211_FCTL_TODS)) ==
-	    cpu_to_le16(IEEE80211_FCTL_FROMDS|IEEE80211_FCTL_TODS)) {
-	  padpos += 6; /* ETH_ALEN */
-	}
-	if ((fc & cpu_to_le16(IEEE80211_STYPE_QOS_DATA|IEEE80211_FCTL_FTYPE)) ==
-	    cpu_to_le16(IEEE80211_STYPE_QOS_DATA|IEEE80211_FTYPE_DATA)) {
-	  padpos += 2;
-	}
+	padpos = ath9k_cmn_padpos(hdr->frame_control);
 
 	/* The MAC header is padded to have 32-bit boundary if the
 	 * packet payload is non-zero. The general calculation for
@@ -282,6 +272,20 @@ void ath9k_cmn_rx_skb_postprocess(struct ath_common *common,
 }
 EXPORT_SYMBOL(ath9k_cmn_rx_skb_postprocess);
 
+int ath9k_cmn_padpos(__le16 frame_control)
+{
+	int padpos = 24;
+	if (ieee80211_has_a4(frame_control)) {
+		padpos += ETH_ALEN;
+	}
+	if (ieee80211_is_data_qos(frame_control)) {
+		padpos += IEEE80211_QOS_CTL_LEN;
+	}
+
+	return padpos;
+}
+EXPORT_SYMBOL(ath9k_cmn_padpos);
+
 static int __init ath9k_cmn_init(void)
 {
 	return 0;

drivers/net/wireless/ath/ath9k/common.h

@@ -78,6 +78,7 @@ struct ath_buf {
 	dma_addr_t bf_daddr;		/* physical addr of desc */
 	dma_addr_t bf_buf_addr;		/* physical addr of data buffer */
 	bool bf_stale;
+	bool bf_isnullfunc;
 	u16 bf_flags;
 	struct ath_buf_state bf_state;
 	dma_addr_t bf_dmacontext;
@@ -122,3 +123,5 @@ void ath9k_cmn_rx_skb_postprocess(struct ath_common *common,
 				  struct ath_rx_status *rx_stats,
 				  struct ieee80211_rx_status *rxs,
 				  bool decrypt_error);
+
+int ath9k_cmn_padpos(__le16 frame_control);

drivers/net/wireless/ath/ath9k/debug.c

@@ -31,6 +31,8 @@ static int ath9k_debugfs_open(struct inode *inode, struct file *file)
 	return 0;
 }
 
+#ifdef CONFIG_ATH_DEBUG
+
 static ssize_t read_file_debug(struct file *file, char __user *user_buf,
 			     size_t count, loff_t *ppos)
 {
@@ -71,6 +73,8 @@ static const struct file_operations fops_debug = {
 	.owner = THIS_MODULE
 };
 
+#endif
+
 static ssize_t read_file_dma(struct file *file, char __user *user_buf,
 			     size_t count, loff_t *ppos)
 {
@@ -255,21 +259,11 @@ 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++;
 }
 
@@ -573,10 +567,12 @@ int ath9k_init_debug(struct ath_hw *ah)
 	if (!sc->debug.debugfs_phy)
 		goto err;
 
+#ifdef CONFIG_ATH_DEBUG
 	sc->debug.debugfs_debug = debugfs_create_file("debug",
 		S_IRUSR | S_IWUSR, sc->debug.debugfs_phy, sc, &fops_debug);
 	if (!sc->debug.debugfs_debug)
 		goto err;
+#endif
 
 	sc->debug.debugfs_dma = debugfs_create_file("dma", S_IRUSR,
 				       sc->debug.debugfs_phy, sc, &fops_dma);

drivers/net/wireless/ath/ath9k/debug.h

@@ -18,17 +18,18 @@
 #define DEBUG_H
 
 #include "hw.h"
+#include "rc.h"
 
 struct ath_txq;
 struct ath_buf;
 
-#ifdef CONFIG_ATH9K_DEBUG
+#ifdef CONFIG_ATH9K_DEBUGFS
 #define TX_STAT_INC(q, c) sc->debug.stats.txstats[q].c++
 #else
 #define TX_STAT_INC(q, c) do { } while (0)
 #endif
 
-#ifdef CONFIG_ATH9K_DEBUG
+#ifdef CONFIG_ATH9K_DEBUGFS
 
 /**
  * struct ath_interrupt_stats - Contains statistics about interrupts
@@ -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)
 {
 }
 
@@ -185,6 +186,6 @@ static inline void ath_debug_stat_retries(struct ath_softc *sc, int rix,
 {
 }
 
-#endif /* CONFIG_ATH9K_DEBUG */
+#endif /* CONFIG_ATH9K_DEBUGFS */
 
 #endif /* DEBUG_H */

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;
 	}
@@ -922,6 +918,11 @@ int ath9k_hw_init(struct ath_hw *ah)
 	ath_print(common, ATH_DBG_RESET, "serialize_regmode is %d\n",
 		ah->config.serialize_regmode);
 
+	if (AR_SREV_9285(ah) || AR_SREV_9271(ah))
+		ah->config.max_txtrig_level = MAX_TX_FIFO_THRESHOLD >> 1;
+	else
+		ah->config.max_txtrig_level = MAX_TX_FIFO_THRESHOLD;
+
 	if (!ath9k_hw_macversion_supported(ah->hw_version.macVersion)) {
 		ath_print(common, ATH_DBG_FATAL,
 			  "Mac Chip Rev 0x%02x.%x is not supported by "
@@ -975,7 +976,10 @@ int ath9k_hw_init(struct ath_hw *ah)
 		return r;
 
 	ath9k_hw_init_mode_gain_regs(ah);
-	ath9k_hw_fill_cap_info(ah);
+	r = ath9k_hw_fill_cap_info(ah);
+	if (r)
+		return r;
+
 	ath9k_hw_init_11a_eeprom_fix(ah);
 
 	r = ath9k_hw_init_macaddr(ah);
@@ -3111,7 +3115,7 @@ EXPORT_SYMBOL(ath9k_hw_set_sta_beacon_timers);
 /* HW Capabilities */
 /*******************/
 
-void ath9k_hw_fill_cap_info(struct ath_hw *ah)
+int ath9k_hw_fill_cap_info(struct ath_hw *ah)
 {
 	struct ath9k_hw_capabilities *pCap = &ah->caps;
 	struct ath_regulatory *regulatory = ath9k_hw_regulatory(ah);
@@ -3142,6 +3146,12 @@ void ath9k_hw_fill_cap_info(struct ath_hw *ah)
 	}
 
 	eeval = ah->eep_ops->get_eeprom(ah, EEP_OP_MODE);
+	if ((eeval & (AR5416_OPFLAGS_11G | AR5416_OPFLAGS_11A)) == 0) {
+		ath_print(common, ATH_DBG_FATAL,
+			  "no band has been marked as supported in EEPROM.\n");
+		return -EINVAL;
+	}
+
 	bitmap_zero(pCap->wireless_modes, ATH9K_MODE_MAX);
 
 	if (eeval & AR5416_OPFLAGS_11A) {
@@ -3228,7 +3238,11 @@ void ath9k_hw_fill_cap_info(struct ath_hw *ah)
 		pCap->keycache_size = AR_KEYTABLE_SIZE;
 
 	pCap->hw_caps |= ATH9K_HW_CAP_FASTCC;
-	pCap->tx_triglevel_max = MAX_TX_FIFO_THRESHOLD;
+
+	if (AR_SREV_9285(ah) || AR_SREV_9271(ah))
+		pCap->tx_triglevel_max = MAX_TX_FIFO_THRESHOLD >> 1;
+	else
+		pCap->tx_triglevel_max = MAX_TX_FIFO_THRESHOLD;
 
 	if (AR_SREV_9285_10_OR_LATER(ah))
 		pCap->num_gpio_pins = AR9285_NUM_GPIO;
@@ -3301,6 +3315,8 @@ void ath9k_hw_fill_cap_info(struct ath_hw *ah)
 	} else {
 		btcoex_hw->scheme = ATH_BTCOEX_CFG_NONE;
 	}
+
+	return 0;
 }
 
 bool ath9k_hw_getcapability(struct ath_hw *ah, enum ath9k_capability_type type,

drivers/net/wireless/ath/ath9k/hw.h

@@ -60,7 +60,7 @@
 
 #define	ATH_DEFAULT_NOISE_FLOOR -95
 
-#define ATH9K_RSSI_BAD			0x80
+#define ATH9K_RSSI_BAD			-128
 
 /* Register read/write primitives */
 #define REG_WRITE(_ah, _reg, _val) \
@@ -226,6 +226,7 @@ struct ath9k_ops_config {
 #define AR_SPUR_FEEQ_BOUND_HT20 10
 	int spurmode;
 	u16 spurchans[AR_EEPROM_MODAL_SPURS][2];
+	u8 max_txtrig_level;
 };
 
 enum ath9k_int {
@@ -619,7 +620,7 @@ void ath9k_hw_detach(struct ath_hw *ah);
 int ath9k_hw_init(struct ath_hw *ah);
 int ath9k_hw_reset(struct ath_hw *ah, struct ath9k_channel *chan,
 		   bool bChannelChange);
-void ath9k_hw_fill_cap_info(struct ath_hw *ah);
+int ath9k_hw_fill_cap_info(struct ath_hw *ah);
 bool ath9k_hw_getcapability(struct ath_hw *ah, enum ath9k_capability_type type,
 			    u32 capability, u32 *result);
 bool ath9k_hw_setcapability(struct ath_hw *ah, enum ath9k_capability_type type,
@@ -647,7 +648,7 @@ 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,

drivers/net/wireless/ath/ath9k/mac.c

@@ -70,12 +70,37 @@ u32 ath9k_hw_numtxpending(struct ath_hw *ah, u32 q)
 }
 EXPORT_SYMBOL(ath9k_hw_numtxpending);
 
+/**
+ * ath9k_hw_updatetxtriglevel - adjusts the frame trigger level
+ *
+ * @ah: atheros hardware struct
+ * @bIncTrigLevel: whether or not the frame trigger level should be updated
+ *
+ * The frame trigger level specifies the minimum number of bytes,
+ * in units of 64 bytes, that must be DMA'ed into the PCU TX FIFO
+ * before the PCU will initiate sending the frame on the air. This can
+ * mean we initiate transmit before a full frame is on the PCU TX FIFO.
+ * Resets to 0x1 (meaning 64 bytes or a full frame, whichever occurs
+ * first)
+ *
+ * Caution must be taken to ensure to set the frame trigger level based
+ * on the DMA request size. For example if the DMA request size is set to
+ * 128 bytes the trigger level cannot exceed 6 * 64 = 384. This is because
+ * there need to be enough space in the tx FIFO for the requested transfer
+ * size. Hence the tx FIFO will stop with 512 - 128 = 384 bytes. If we set
+ * the threshold to a value beyond 6, then the transmit will hang.
+ *
+ * Current dual   stream devices have a PCU TX FIFO size of 8 KB.
+ * Current single stream devices have a PCU TX FIFO size of 4 KB, however,
+ * there is a hardware issue which forces us to use 2 KB instead so the
+ * frame trigger level must not exceed 2 KB for these chipsets.
+ */
 bool ath9k_hw_updatetxtriglevel(struct ath_hw *ah, bool bIncTrigLevel)
 {
 	u32 txcfg, curLevel, newLevel;
 	enum ath9k_int omask;
 
-	if (ah->tx_trig_level >= MAX_TX_FIFO_THRESHOLD)
+	if (ah->tx_trig_level >= ah->config.max_txtrig_level)
 		return false;
 
 	omask = ath9k_hw_set_interrupts(ah, ah->mask_reg & ~ATH9K_INT_GLOBAL);
@@ -84,7 +109,7 @@ bool ath9k_hw_updatetxtriglevel(struct ath_hw *ah, bool bIncTrigLevel)
 	curLevel = MS(txcfg, AR_FTRIG);
 	newLevel = curLevel;
 	if (bIncTrigLevel) {
-		if (curLevel < MAX_TX_FIFO_THRESHOLD)
+		if (curLevel < ah->config.max_txtrig_level)
 			newLevel++;
 	} else if (curLevel > MIN_TX_FIFO_THRESHOLD)
 		newLevel--;
@@ -231,6 +256,8 @@ int ath9k_hw_txprocdesc(struct ath_hw *ah, struct ath_desc *ds)
 	ds->ds_txstat.ts_status = 0;
 	ds->ds_txstat.ts_flags = 0;
 
+	if (ads->ds_txstatus1 & AR_FrmXmitOK)
+		ds->ds_txstat.ts_status |= ATH9K_TX_ACKED;
 	if (ads->ds_txstatus1 & AR_ExcessiveRetries)
 		ds->ds_txstat.ts_status |= ATH9K_TXERR_XRETRY;
 	if (ads->ds_txstatus1 & AR_Filtered)
@@ -926,6 +953,13 @@ void ath9k_hw_setuprxdesc(struct ath_hw *ah, struct ath_desc *ds,
 }
 EXPORT_SYMBOL(ath9k_hw_setuprxdesc);
 
+/*
+ * This can stop or re-enables RX.
+ *
+ * If bool is set this will kill any frame which is currently being
+ * transferred between the MAC and baseband and also prevent any new
+ * frames from getting started.
+ */
 bool ath9k_hw_setrxabort(struct ath_hw *ah, bool set)
 {
 	u32 reg;

drivers/net/wireless/ath/ath9k/mac.h

@@ -76,6 +76,7 @@
 #define ATH9K_TXERR_FIFO           0x04
 #define ATH9K_TXERR_XTXOP          0x08
 #define ATH9K_TXERR_TIMER_EXPIRED  0x10
+#define ATH9K_TX_ACKED		   0x20
 
 #define ATH9K_TX_BA                0x01
 #define ATH9K_TX_PWRMGMT           0x02
@@ -85,9 +86,15 @@
 #define ATH9K_TX_SW_ABORTED        0x40
 #define ATH9K_TX_SW_FILTERED       0x80
 
+/* 64 bytes */
 #define MIN_TX_FIFO_THRESHOLD   0x1
+
+/*
+ * Single stream device AR9285 and AR9271 require 2 KB
+ * to work around a hardware issue, all other devices
+ * have can use the max 4 KB limit.
+ */
 #define MAX_TX_FIFO_THRESHOLD   ((4096 / 64) - 1)
-#define INIT_TX_FIFO_THRESHOLD  MIN_TX_FIFO_THRESHOLD
 
 struct ath_tx_status {
 	u32 ts_tstamp;
@@ -380,6 +387,11 @@ struct ar5416_desc {
 #define AR_TxBaStatus       0x40000000
 #define AR_TxStatusRsvd01   0x80000000
 
+/*
+ * AR_FrmXmitOK - Frame transmission success flag. If set, the frame was
+ * transmitted successfully. If clear, no ACK or BA was received to indicate
+ * successful transmission when we were expecting an ACK or BA.
+ */
 #define AR_FrmXmitOK            0x00000001
 #define AR_ExcessiveRetries     0x00000002
 #define AR_FIFOUnderrun         0x00000004
@@ -616,7 +628,6 @@ 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);

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))