rt2x00: Queue handling overhaul

This introduces a big queue handling overhaul, this also
renames "ring" to "queues".

Move queue handling into rt2x00queue.c and the matching header,
use Kerneldoc to improve rt2x00 library documentation.

Access to the queues is now protected under a spinlock, this
to prevent race conditions which could corrupt the indexing
system of the queue.

Each queue entry allocates x bytes for driver/device specific data,
this cleans up the queue structure significantly and improves
code readability.

rt2500usb no longer needs 2 entries in the beacon queue to correctly
send out the guardian byte. This is now handled in the entry specific
structure.

rt61 and rt73 now use the correct descriptor size for beacon frames,
since this data is written into the registers not the entire TXD
descriptor was used but instead of a subset of it named TXINFO.

Finally this also fixes numerous other bugs related to incorrect
beacon handling or beacon related code.

Signed-off-by: Ivo van Doorn <IvDoorn@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

drivers/net/wireless/rt2x00/Makefile

@@ -1,4 +1,4 @@
-rt2x00lib-objs := rt2x00dev.o rt2x00mac.o rt2x00config.o
+rt2x00lib-objs := rt2x00dev.o rt2x00mac.o rt2x00config.o rt2x00queue.o
 
 ifeq ($(CONFIG_RT2X00_LIB_DEBUGFS),y)
 	rt2x00lib-objs += rt2x00debug.o

drivers/net/wireless/rt2x00/rt2400pci.c

@@ -498,13 +498,13 @@ static void rt2400pci_config(struct rt2x00_dev *rt2x00dev,
 }
 
 static void rt2400pci_config_cw(struct rt2x00_dev *rt2x00dev,
-				struct ieee80211_tx_queue_params *params)
+				const int cw_min, const int cw_max)
 {
 	u32 reg;
 
 	rt2x00pci_register_read(rt2x00dev, CSR11, &reg);
-	rt2x00_set_field32(&reg, CSR11_CWMIN, params->cw_min);
-	rt2x00_set_field32(&reg, CSR11_CWMAX, params->cw_max);
+	rt2x00_set_field32(&reg, CSR11_CWMIN, cw_min);
+	rt2x00_set_field32(&reg, CSR11_CWMAX, cw_max);
 	rt2x00pci_register_write(rt2x00dev, CSR11, reg);
 }
 
@@ -593,90 +593,89 @@ static void rt2400pci_link_tuner(struct rt2x00_dev *rt2x00dev)
  * Initialization functions.
  */
 static void rt2400pci_init_rxentry(struct rt2x00_dev *rt2x00dev,
-				   struct data_entry *entry)
+				   struct queue_entry *entry)
 {
-	__le32 *rxd = entry->priv;
+	struct queue_entry_priv_pci_rx *priv_rx = entry->priv_data;
 	u32 word;
 
-	rt2x00_desc_read(rxd, 2, &word);
-	rt2x00_set_field32(&word, RXD_W2_BUFFER_LENGTH, entry->ring->data_size);
-	rt2x00_desc_write(rxd, 2, word);
+	rt2x00_desc_read(priv_rx->desc, 2, &word);
+	rt2x00_set_field32(&word, RXD_W2_BUFFER_LENGTH, entry->queue->data_size);
+	rt2x00_desc_write(priv_rx->desc, 2, word);
 
-	rt2x00_desc_read(rxd, 1, &word);
-	rt2x00_set_field32(&word, RXD_W1_BUFFER_ADDRESS, entry->data_dma);
-	rt2x00_desc_write(rxd, 1, word);
+	rt2x00_desc_read(priv_rx->desc, 1, &word);
+	rt2x00_set_field32(&word, RXD_W1_BUFFER_ADDRESS, priv_rx->dma);
+	rt2x00_desc_write(priv_rx->desc, 1, word);
 
-	rt2x00_desc_read(rxd, 0, &word);
+	rt2x00_desc_read(priv_rx->desc, 0, &word);
 	rt2x00_set_field32(&word, RXD_W0_OWNER_NIC, 1);
-	rt2x00_desc_write(rxd, 0, word);
+	rt2x00_desc_write(priv_rx->desc, 0, word);
 }
 
 static void rt2400pci_init_txentry(struct rt2x00_dev *rt2x00dev,
-				   struct data_entry *entry)
+				   struct queue_entry *entry)
 {
-	__le32 *txd = entry->priv;
+	struct queue_entry_priv_pci_tx *priv_tx = entry->priv_data;
 	u32 word;
 
-	rt2x00_desc_read(txd, 1, &word);
-	rt2x00_set_field32(&word, TXD_W1_BUFFER_ADDRESS, entry->data_dma);
-	rt2x00_desc_write(txd, 1, word);
+	rt2x00_desc_read(priv_tx->desc, 1, &word);
+	rt2x00_set_field32(&word, TXD_W1_BUFFER_ADDRESS, priv_tx->dma);
+	rt2x00_desc_write(priv_tx->desc, 1, word);
 
-	rt2x00_desc_read(txd, 2, &word);
-	rt2x00_set_field32(&word, TXD_W2_BUFFER_LENGTH, entry->ring->data_size);
-	rt2x00_desc_write(txd, 2, word);
+	rt2x00_desc_read(priv_tx->desc, 2, &word);
+	rt2x00_set_field32(&word, TXD_W2_BUFFER_LENGTH,
+			   entry->queue->data_size);
+	rt2x00_desc_write(priv_tx->desc, 2, word);
 
-	rt2x00_desc_read(txd, 0, &word);
+	rt2x00_desc_read(priv_tx->desc, 0, &word);
 	rt2x00_set_field32(&word, TXD_W0_VALID, 0);
 	rt2x00_set_field32(&word, TXD_W0_OWNER_NIC, 0);
-	rt2x00_desc_write(txd, 0, word);
+	rt2x00_desc_write(priv_tx->desc, 0, word);
 }
 
-static int rt2400pci_init_rings(struct rt2x00_dev *rt2x00dev)
+static int rt2400pci_init_queues(struct rt2x00_dev *rt2x00dev)
 {
+	struct queue_entry_priv_pci_rx *priv_rx;
+	struct queue_entry_priv_pci_tx *priv_tx;
 	u32 reg;
 
 	/*
 	 * Initialize registers.
 	 */
 	rt2x00pci_register_read(rt2x00dev, TXCSR2, &reg);
-	rt2x00_set_field32(&reg, TXCSR2_TXD_SIZE,
-			   rt2x00dev->tx[IEEE80211_TX_QUEUE_DATA0].desc_size);
-	rt2x00_set_field32(&reg, TXCSR2_NUM_TXD,
-			   rt2x00dev->tx[IEEE80211_TX_QUEUE_DATA1].stats.limit);
-	rt2x00_set_field32(&reg, TXCSR2_NUM_ATIM,
-			   rt2x00dev->bcn[1].stats.limit);
-	rt2x00_set_field32(&reg, TXCSR2_NUM_PRIO,
-			   rt2x00dev->tx[IEEE80211_TX_QUEUE_DATA0].stats.limit);
+	rt2x00_set_field32(&reg, TXCSR2_TXD_SIZE, rt2x00dev->tx[0].desc_size);
+	rt2x00_set_field32(&reg, TXCSR2_NUM_TXD, rt2x00dev->tx[1].limit);
+	rt2x00_set_field32(&reg, TXCSR2_NUM_ATIM, rt2x00dev->bcn[1].limit);
+	rt2x00_set_field32(&reg, TXCSR2_NUM_PRIO, rt2x00dev->tx[0].limit);
 	rt2x00pci_register_write(rt2x00dev, TXCSR2, reg);
 
+	priv_tx = rt2x00dev->tx[1].entries[0].priv_data;
 	rt2x00pci_register_read(rt2x00dev, TXCSR3, &reg);
-	rt2x00_set_field32(&reg, TXCSR3_TX_RING_REGISTER,
-			   rt2x00dev->tx[IEEE80211_TX_QUEUE_DATA1].data_dma);
+	rt2x00_set_field32(&reg, TXCSR3_TX_RING_REGISTER, priv_tx->dma);
 	rt2x00pci_register_write(rt2x00dev, TXCSR3, reg);
 
+	priv_tx = rt2x00dev->tx[0].entries[0].priv_data;
 	rt2x00pci_register_read(rt2x00dev, TXCSR5, &reg);
-	rt2x00_set_field32(&reg, TXCSR5_PRIO_RING_REGISTER,
-			   rt2x00dev->tx[IEEE80211_TX_QUEUE_DATA0].data_dma);
+	rt2x00_set_field32(&reg, TXCSR5_PRIO_RING_REGISTER, priv_tx->dma);
 	rt2x00pci_register_write(rt2x00dev, TXCSR5, reg);
 
+	priv_tx = rt2x00dev->bcn[1].entries[0].priv_data;
 	rt2x00pci_register_read(rt2x00dev, TXCSR4, &reg);
-	rt2x00_set_field32(&reg, TXCSR4_ATIM_RING_REGISTER,
-			   rt2x00dev->bcn[1].data_dma);
+	rt2x00_set_field32(&reg, TXCSR4_ATIM_RING_REGISTER, priv_tx->dma);
 	rt2x00pci_register_write(rt2x00dev, TXCSR4, reg);
 
+	priv_tx = rt2x00dev->bcn[0].entries[0].priv_data;
 	rt2x00pci_register_read(rt2x00dev, TXCSR6, &reg);
-	rt2x00_set_field32(&reg, TXCSR6_BEACON_RING_REGISTER,
-			   rt2x00dev->bcn[0].data_dma);
+	rt2x00_set_field32(&reg, TXCSR6_BEACON_RING_REGISTER, priv_tx->dma);
 	rt2x00pci_register_write(rt2x00dev, TXCSR6, reg);
 
 	rt2x00pci_register_read(rt2x00dev, RXCSR1, &reg);
 	rt2x00_set_field32(&reg, RXCSR1_RXD_SIZE, rt2x00dev->rx->desc_size);
-	rt2x00_set_field32(&reg, RXCSR1_NUM_RXD, rt2x00dev->rx->stats.limit);
+	rt2x00_set_field32(&reg, RXCSR1_NUM_RXD, rt2x00dev->rx->limit);
 	rt2x00pci_register_write(rt2x00dev, RXCSR1, reg);
 
+	priv_rx = rt2x00dev->rx->entries[0].priv_data;
 	rt2x00pci_register_read(rt2x00dev, RXCSR2, &reg);
-	rt2x00_set_field32(&reg, RXCSR2_RX_RING_REGISTER,
-			   rt2x00dev->rx->data_dma);
+	rt2x00_set_field32(&reg, RXCSR2_RX_RING_REGISTER, priv_tx->dma);
 	rt2x00pci_register_write(rt2x00dev, RXCSR2, reg);
 
 	return 0;
@@ -859,7 +858,7 @@ static int rt2400pci_enable_radio(struct rt2x00_dev *rt2x00dev)
 	/*
 	 * Initialize all registers.
 	 */
-	if (rt2400pci_init_rings(rt2x00dev) ||
+	if (rt2400pci_init_queues(rt2x00dev) ||
 	    rt2400pci_init_registers(rt2x00dev) ||
 	    rt2400pci_init_bbp(rt2x00dev)) {
 		ERROR(rt2x00dev, "Register initialization failed.\n");
@@ -986,10 +985,10 @@ static int rt2400pci_set_device_state(struct rt2x00_dev *rt2x00dev,
  */
 static void rt2400pci_write_tx_desc(struct rt2x00_dev *rt2x00dev,
 				    struct sk_buff *skb,
-				    struct txdata_entry_desc *desc,
+				    struct txentry_desc *txdesc,
 				    struct ieee80211_tx_control *control)
 {
-	struct skb_desc *skbdesc = get_skb_desc(skb);
+	struct skb_frame_desc *skbdesc = get_skb_frame_desc(skb);
 	__le32 *txd = skbdesc->desc;
 	u32 word;
 
@@ -1001,19 +1000,19 @@ static void rt2400pci_write_tx_desc(struct rt2x00_dev *rt2x00dev,
 	rt2x00_desc_write(txd, 2, word);
 
 	rt2x00_desc_read(txd, 3, &word);
-	rt2x00_set_field32(&word, TXD_W3_PLCP_SIGNAL, desc->signal);
+	rt2x00_set_field32(&word, TXD_W3_PLCP_SIGNAL, txdesc->signal);
 	rt2x00_set_field32(&word, TXD_W3_PLCP_SIGNAL_REGNUM, 5);
 	rt2x00_set_field32(&word, TXD_W3_PLCP_SIGNAL_BUSY, 1);
-	rt2x00_set_field32(&word, TXD_W3_PLCP_SERVICE, desc->service);
+	rt2x00_set_field32(&word, TXD_W3_PLCP_SERVICE, txdesc->service);
 	rt2x00_set_field32(&word, TXD_W3_PLCP_SERVICE_REGNUM, 6);
 	rt2x00_set_field32(&word, TXD_W3_PLCP_SERVICE_BUSY, 1);
 	rt2x00_desc_write(txd, 3, word);
 
 	rt2x00_desc_read(txd, 4, &word);
-	rt2x00_set_field32(&word, TXD_W4_PLCP_LENGTH_LOW, desc->length_low);
+	rt2x00_set_field32(&word, TXD_W4_PLCP_LENGTH_LOW, txdesc->length_low);
 	rt2x00_set_field32(&word, TXD_W3_PLCP_LENGTH_LOW_REGNUM, 8);
 	rt2x00_set_field32(&word, TXD_W3_PLCP_LENGTH_LOW_BUSY, 1);
-	rt2x00_set_field32(&word, TXD_W4_PLCP_LENGTH_HIGH, desc->length_high);
+	rt2x00_set_field32(&word, TXD_W4_PLCP_LENGTH_HIGH, txdesc->length_high);
 	rt2x00_set_field32(&word, TXD_W3_PLCP_LENGTH_HIGH_REGNUM, 7);
 	rt2x00_set_field32(&word, TXD_W3_PLCP_LENGTH_HIGH_BUSY, 1);
 	rt2x00_desc_write(txd, 4, word);
@@ -1022,14 +1021,14 @@ static void rt2400pci_write_tx_desc(struct rt2x00_dev *rt2x00dev,
 	rt2x00_set_field32(&word, TXD_W0_OWNER_NIC, 1);
 	rt2x00_set_field32(&word, TXD_W0_VALID, 1);
 	rt2x00_set_field32(&word, TXD_W0_MORE_FRAG,
-			   test_bit(ENTRY_TXD_MORE_FRAG, &desc->flags));
+			   test_bit(ENTRY_TXD_MORE_FRAG, &txdesc->flags));
 	rt2x00_set_field32(&word, TXD_W0_ACK,
-			   test_bit(ENTRY_TXD_ACK, &desc->flags));
+			   test_bit(ENTRY_TXD_ACK, &txdesc->flags));
 	rt2x00_set_field32(&word, TXD_W0_TIMESTAMP,
-			   test_bit(ENTRY_TXD_REQ_TIMESTAMP, &desc->flags));
+			   test_bit(ENTRY_TXD_REQ_TIMESTAMP, &txdesc->flags));
 	rt2x00_set_field32(&word, TXD_W0_RTS,
-			   test_bit(ENTRY_TXD_RTS_FRAME, &desc->flags));
-	rt2x00_set_field32(&word, TXD_W0_IFS, desc->ifs);
+			   test_bit(ENTRY_TXD_RTS_FRAME, &txdesc->flags));
+	rt2x00_set_field32(&word, TXD_W0_IFS, txdesc->ifs);
 	rt2x00_set_field32(&word, TXD_W0_RETRY_MODE,
 			   !!(control->flags &
 			      IEEE80211_TXCTL_LONG_RETRY_LIMIT));
@@ -1066,49 +1065,49 @@ static void rt2400pci_kick_tx_queue(struct rt2x00_dev *rt2x00dev,
 /*
  * RX control handlers
  */
-static void rt2400pci_fill_rxdone(struct data_entry *entry,
-				  struct rxdata_entry_desc *desc)
+static void rt2400pci_fill_rxdone(struct queue_entry *entry,
+				  struct rxdone_entry_desc *rxdesc)
 {
-	__le32 *rxd = entry->priv;
+	struct queue_entry_priv_pci_rx *priv_rx = entry->priv_data;
 	u32 word0;
 	u32 word2;
 
-	rt2x00_desc_read(rxd, 0, &word0);
-	rt2x00_desc_read(rxd, 2, &word2);
+	rt2x00_desc_read(priv_rx->desc, 0, &word0);
+	rt2x00_desc_read(priv_rx->desc, 2, &word2);
 
-	desc->flags = 0;
+	rxdesc->flags = 0;
 	if (rt2x00_get_field32(word0, RXD_W0_CRC_ERROR))
-		desc->flags |= RX_FLAG_FAILED_FCS_CRC;
+		rxdesc->flags |= RX_FLAG_FAILED_FCS_CRC;
 	if (rt2x00_get_field32(word0, RXD_W0_PHYSICAL_ERROR))
-		desc->flags |= RX_FLAG_FAILED_PLCP_CRC;
+		rxdesc->flags |= RX_FLAG_FAILED_PLCP_CRC;
 
 	/*
 	 * Obtain the status about this packet.
 	 */
-	desc->signal = rt2x00_get_field32(word2, RXD_W2_SIGNAL);
-	desc->rssi = rt2x00_get_field32(word2, RXD_W2_RSSI) -
-	    entry->ring->rt2x00dev->rssi_offset;
-	desc->ofdm = 0;
-	desc->size = rt2x00_get_field32(word0, RXD_W0_DATABYTE_COUNT);
-	desc->my_bss = !!rt2x00_get_field32(word0, RXD_W0_MY_BSS);
+	rxdesc->signal = rt2x00_get_field32(word2, RXD_W2_SIGNAL);
+	rxdesc->rssi = rt2x00_get_field32(word2, RXD_W2_RSSI) -
+	    entry->queue->rt2x00dev->rssi_offset;
+	rxdesc->ofdm = 0;
+	rxdesc->size = rt2x00_get_field32(word0, RXD_W0_DATABYTE_COUNT);
+	rxdesc->my_bss = !!rt2x00_get_field32(word0, RXD_W0_MY_BSS);
 }
 
 /*
  * Interrupt functions.
  */
-static void rt2400pci_txdone(struct rt2x00_dev *rt2x00dev, const int queue)
+static void rt2400pci_txdone(struct rt2x00_dev *rt2x00dev,
+			     const enum ieee80211_tx_queue queue_idx)
 {
-	struct data_ring *ring = rt2x00lib_get_ring(rt2x00dev, queue);
-	struct data_entry *entry;
-	__le32 *txd;
+	struct data_queue *queue = rt2x00queue_get_queue(rt2x00dev, queue_idx);
+	struct queue_entry_priv_pci_tx *priv_tx;
+	struct queue_entry *entry;
+	struct txdone_entry_desc txdesc;
 	u32 word;
-	int tx_status;
-	int retry;
 
-	while (!rt2x00_ring_empty(ring)) {
-		entry = rt2x00_get_data_entry_done(ring);
-		txd = entry->priv;
-		rt2x00_desc_read(txd, 0, &word);
+	while (!rt2x00queue_empty(queue)) {
+		entry = rt2x00queue_get_entry(queue, Q_INDEX_DONE);
+		priv_tx = entry->priv_data;
+		rt2x00_desc_read(priv_tx->desc, 0, &word);
 
 		if (rt2x00_get_field32(word, TXD_W0_OWNER_NIC) ||
 		    !rt2x00_get_field32(word, TXD_W0_VALID))
@@ -1117,10 +1116,10 @@ static void rt2400pci_txdone(struct rt2x00_dev *rt2x00dev, const int queue)
 		/*
 		 * Obtain the status about this packet.
 		 */
-		tx_status = rt2x00_get_field32(word, TXD_W0_RESULT);
-		retry = rt2x00_get_field32(word, TXD_W0_RETRY_COUNT);
+		txdesc.status = rt2x00_get_field32(word, TXD_W0_RESULT);
+		txdesc.retry = rt2x00_get_field32(word, TXD_W0_RETRY_COUNT);
 
-		rt2x00pci_txdone(rt2x00dev, entry, tx_status, retry);
+		rt2x00pci_txdone(rt2x00dev, entry, &txdesc);
 	}
 }
 
@@ -1374,9 +1373,9 @@ static int rt2400pci_probe_hw(struct rt2x00_dev *rt2x00dev)
 	rt2400pci_probe_hw_mode(rt2x00dev);
 
 	/*
-	 * This device requires the beacon ring
+	 * This device requires the atim queue
 	 */
-	__set_bit(DRIVER_REQUIRE_BEACON_RING, &rt2x00dev->flags);
+	__set_bit(DRIVER_REQUIRE_ATIM_QUEUE, &rt2x00dev->flags);
 
 	/*
 	 * Set the rssi offset.
@@ -1481,7 +1480,8 @@ static int rt2400pci_conf_tx(struct ieee80211_hw *hw,
 	/*
 	 * Write configuration to register.
 	 */
-	rt2400pci_config_cw(rt2x00dev, &rt2x00dev->tx->tx_params);
+	rt2400pci_config_cw(rt2x00dev,
+			    rt2x00dev->tx->cw_min, rt2x00dev->tx->cw_max);
 
 	return 0;
 }
@@ -1560,12 +1560,42 @@ static const struct rt2x00lib_ops rt2400pci_rt2x00_ops = {
 	.config			= rt2400pci_config,
 };
 
+static const struct data_queue_desc rt2400pci_queue_rx = {
+	.entry_num		= RX_ENTRIES,
+	.data_size		= DATA_FRAME_SIZE,
+	.desc_size		= RXD_DESC_SIZE,
+	.priv_size		= sizeof(struct queue_entry_priv_pci_rx),
+};
+
+static const struct data_queue_desc rt2400pci_queue_tx = {
+	.entry_num		= TX_ENTRIES,
+	.data_size		= DATA_FRAME_SIZE,
+	.desc_size		= TXD_DESC_SIZE,
+	.priv_size		= sizeof(struct queue_entry_priv_pci_tx),
+};
+
+static const struct data_queue_desc rt2400pci_queue_bcn = {
+	.entry_num		= BEACON_ENTRIES,
+	.data_size		= MGMT_FRAME_SIZE,
+	.desc_size		= TXD_DESC_SIZE,
+	.priv_size		= sizeof(struct queue_entry_priv_pci_tx),
+};
+
+static const struct data_queue_desc rt2400pci_queue_atim = {
+	.entry_num		= ATIM_ENTRIES,
+	.data_size		= DATA_FRAME_SIZE,
+	.desc_size		= TXD_DESC_SIZE,
+	.priv_size		= sizeof(struct queue_entry_priv_pci_tx),
+};
+
 static const struct rt2x00_ops rt2400pci_ops = {
 	.name		= KBUILD_MODNAME,
-	.rxd_size	= RXD_DESC_SIZE,
-	.txd_size	= TXD_DESC_SIZE,
 	.eeprom_size	= EEPROM_SIZE,
 	.rf_size	= RF_SIZE,
+	.rx		= &rt2400pci_queue_rx,
+	.tx		= &rt2400pci_queue_tx,
+	.bcn		= &rt2400pci_queue_bcn,
+	.atim		= &rt2400pci_queue_atim,
 	.lib		= &rt2400pci_rt2x00_ops,
 	.hw		= &rt2400pci_mac80211_ops,
 #ifdef CONFIG_RT2X00_LIB_DEBUGFS

drivers/net/wireless/rt2x00/rt2500pci.c

@@ -263,6 +263,8 @@ static void rt2500pci_config_bssid(struct rt2x00_dev *rt2x00dev,
 static void rt2500pci_config_type(struct rt2x00_dev *rt2x00dev, const int type,
 				  const int tsf_sync)
 {
+	struct data_queue *queue =
+	    rt2x00queue_get_queue(rt2x00dev, IEEE80211_TX_QUEUE_BEACON);
 	u32 reg;
 
 	rt2x00pci_register_write(rt2x00dev, CSR14, 0);
@@ -273,10 +275,7 @@ static void rt2500pci_config_type(struct rt2x00_dev *rt2x00dev, const int type,
 	rt2x00pci_register_read(rt2x00dev, BCNCSR1, &reg);
 	rt2x00_set_field32(&reg, BCNCSR1_PRELOAD,
 			   PREAMBLE + get_duration(IEEE80211_HEADER, 20));
-	rt2x00_set_field32(&reg, BCNCSR1_BEACON_CWMIN,
-			   rt2x00lib_get_ring(rt2x00dev,
-					      IEEE80211_TX_QUEUE_BEACON)
-			   ->tx_params.cw_min);
+	rt2x00_set_field32(&reg, BCNCSR1_BEACON_CWMIN, queue->cw_min);
 	rt2x00pci_register_write(rt2x00dev, BCNCSR1, reg);
 
 	/*
@@ -684,82 +683,80 @@ dynamic_cca_tune:
  * Initialization functions.
  */
 static void rt2500pci_init_rxentry(struct rt2x00_dev *rt2x00dev,
-				   struct data_entry *entry)
+				   struct queue_entry *entry)
 {
-	__le32 *rxd = entry->priv;
+	struct queue_entry_priv_pci_rx *priv_rx = entry->priv_data;
 	u32 word;
 
-	rt2x00_desc_read(rxd, 1, &word);
-	rt2x00_set_field32(&word, RXD_W1_BUFFER_ADDRESS, entry->data_dma);
-	rt2x00_desc_write(rxd, 1, word);
+	rt2x00_desc_read(priv_rx->desc, 1, &word);
+	rt2x00_set_field32(&word, RXD_W1_BUFFER_ADDRESS, priv_rx->dma);
+	rt2x00_desc_write(priv_rx->desc, 1, word);
 
-	rt2x00_desc_read(rxd, 0, &word);
+	rt2x00_desc_read(priv_rx->desc, 0, &word);
 	rt2x00_set_field32(&word, RXD_W0_OWNER_NIC, 1);
-	rt2x00_desc_write(rxd, 0, word);
+	rt2x00_desc_write(priv_rx->desc, 0, word);
 }
 
 static void rt2500pci_init_txentry(struct rt2x00_dev *rt2x00dev,
-				   struct data_entry *entry)
+				   struct queue_entry *entry)
 {
-	__le32 *txd = entry->priv;
+	struct queue_entry_priv_pci_tx *priv_tx = entry->priv_data;
 	u32 word;
 
-	rt2x00_desc_read(txd, 1, &word);
-	rt2x00_set_field32(&word, TXD_W1_BUFFER_ADDRESS, entry->data_dma);
-	rt2x00_desc_write(txd, 1, word);
+	rt2x00_desc_read(priv_tx->desc, 1, &word);
+	rt2x00_set_field32(&word, TXD_W1_BUFFER_ADDRESS, priv_tx->dma);
+	rt2x00_desc_write(priv_tx->desc, 1, word);
 
-	rt2x00_desc_read(txd, 0, &word);
+	rt2x00_desc_read(priv_tx->desc, 0, &word);
 	rt2x00_set_field32(&word, TXD_W0_VALID, 0);
 	rt2x00_set_field32(&word, TXD_W0_OWNER_NIC, 0);
-	rt2x00_desc_write(txd, 0, word);
+	rt2x00_desc_write(priv_tx->desc, 0, word);
 }
 
-static int rt2500pci_init_rings(struct rt2x00_dev *rt2x00dev)
+static int rt2500pci_init_queues(struct rt2x00_dev *rt2x00dev)
 {
+	struct queue_entry_priv_pci_rx *priv_rx;
+	struct queue_entry_priv_pci_tx *priv_tx;
 	u32 reg;
 
 	/*
 	 * Initialize registers.
 	 */
 	rt2x00pci_register_read(rt2x00dev, TXCSR2, &reg);
-	rt2x00_set_field32(&reg, TXCSR2_TXD_SIZE,
-			   rt2x00dev->tx[IEEE80211_TX_QUEUE_DATA0].desc_size);
-	rt2x00_set_field32(&reg, TXCSR2_NUM_TXD,
-			   rt2x00dev->tx[IEEE80211_TX_QUEUE_DATA1].stats.limit);
-	rt2x00_set_field32(&reg, TXCSR2_NUM_ATIM,
-			   rt2x00dev->bcn[1].stats.limit);
-	rt2x00_set_field32(&reg, TXCSR2_NUM_PRIO,
-			   rt2x00dev->tx[IEEE80211_TX_QUEUE_DATA0].stats.limit);
+	rt2x00_set_field32(&reg, TXCSR2_TXD_SIZE, rt2x00dev->tx[0].desc_size);
+	rt2x00_set_field32(&reg, TXCSR2_NUM_TXD, rt2x00dev->tx[1].limit);
+	rt2x00_set_field32(&reg, TXCSR2_NUM_ATIM, rt2x00dev->bcn[1].limit);
+	rt2x00_set_field32(&reg, TXCSR2_NUM_PRIO, rt2x00dev->tx[0].limit);
 	rt2x00pci_register_write(rt2x00dev, TXCSR2, reg);
 
+	priv_tx = rt2x00dev->tx[1].entries[0].priv_data;
 	rt2x00pci_register_read(rt2x00dev, TXCSR3, &reg);
-	rt2x00_set_field32(&reg, TXCSR3_TX_RING_REGISTER,
-			   rt2x00dev->tx[IEEE80211_TX_QUEUE_DATA1].data_dma);
+	rt2x00_set_field32(&reg, TXCSR3_TX_RING_REGISTER, priv_tx->dma);
 	rt2x00pci_register_write(rt2x00dev, TXCSR3, reg);
 
+	priv_tx = rt2x00dev->tx[0].entries[0].priv_data;
 	rt2x00pci_register_read(rt2x00dev, TXCSR5, &reg);
-	rt2x00_set_field32(&reg, TXCSR5_PRIO_RING_REGISTER,
-			   rt2x00dev->tx[IEEE80211_TX_QUEUE_DATA0].data_dma);
+	rt2x00_set_field32(&reg, TXCSR5_PRIO_RING_REGISTER, priv_tx->dma);
 	rt2x00pci_register_write(rt2x00dev, TXCSR5, reg);
 
+	priv_tx = rt2x00dev->bcn[1].entries[0].priv_data;
 	rt2x00pci_register_read(rt2x00dev, TXCSR4, &reg);
-	rt2x00_set_field32(&reg, TXCSR4_ATIM_RING_REGISTER,
-			   rt2x00dev->bcn[1].data_dma);
+	rt2x00_set_field32(&reg, TXCSR4_ATIM_RING_REGISTER, priv_tx->dma);
 	rt2x00pci_register_write(rt2x00dev, TXCSR4, reg);
 
+	priv_tx = rt2x00dev->bcn[0].entries[0].priv_data;
 	rt2x00pci_register_read(rt2x00dev, TXCSR6, &reg);
-	rt2x00_set_field32(&reg, TXCSR6_BEACON_RING_REGISTER,
-			   rt2x00dev->bcn[0].data_dma);
+	rt2x00_set_field32(&reg, TXCSR6_BEACON_RING_REGISTER, priv_tx->dma);
 	rt2x00pci_register_write(rt2x00dev, TXCSR6, reg);
 
 	rt2x00pci_register_read(rt2x00dev, RXCSR1, &reg);
 	rt2x00_set_field32(&reg, RXCSR1_RXD_SIZE, rt2x00dev->rx->desc_size);
-	rt2x00_set_field32(&reg, RXCSR1_NUM_RXD, rt2x00dev->rx->stats.limit);
+	rt2x00_set_field32(&reg, RXCSR1_NUM_RXD, rt2x00dev->rx->limit);
 	rt2x00pci_register_write(rt2x00dev, RXCSR1, reg);
 
+	priv_rx = rt2x00dev->rx->entries[0].priv_data;
 	rt2x00pci_register_read(rt2x00dev, RXCSR2, &reg);
-	rt2x00_set_field32(&reg, RXCSR2_RX_RING_REGISTER,
-			   rt2x00dev->rx->data_dma);
+	rt2x00_set_field32(&reg, RXCSR2_RX_RING_REGISTER, priv_tx->dma);
 	rt2x00pci_register_write(rt2x00dev, RXCSR2, reg);
 
 	return 0;
@@ -1011,7 +1008,7 @@ static int rt2500pci_enable_radio(struct rt2x00_dev *rt2x00dev)
 	/*
 	 * Initialize all registers.
 	 */
-	if (rt2500pci_init_rings(rt2x00dev) ||
+	if (rt2500pci_init_queues(rt2x00dev) ||
 	    rt2500pci_init_registers(rt2x00dev) ||
 	    rt2500pci_init_bbp(rt2x00dev)) {
 		ERROR(rt2x00dev, "Register initialization failed.\n");
@@ -1138,10 +1135,10 @@ static int rt2500pci_set_device_state(struct rt2x00_dev *rt2x00dev,
  */
 static void rt2500pci_write_tx_desc(struct rt2x00_dev *rt2x00dev,
 				    struct sk_buff *skb,
-				    struct txdata_entry_desc *desc,
+				    struct txentry_desc *txdesc,
 				    struct ieee80211_tx_control *control)
 {
-	struct skb_desc *skbdesc = get_skb_desc(skb);
+	struct skb_frame_desc *skbdesc = get_skb_frame_desc(skb);
 	__le32 *txd = skbdesc->desc;
 	u32 word;
 
@@ -1150,36 +1147,36 @@ static void rt2500pci_write_tx_desc(struct rt2x00_dev *rt2x00dev,
 	 */
 	rt2x00_desc_read(txd, 2, &word);
 	rt2x00_set_field32(&word, TXD_W2_IV_OFFSET, IEEE80211_HEADER);
-	rt2x00_set_field32(&word, TXD_W2_AIFS, desc->aifs);
-	rt2x00_set_field32(&word, TXD_W2_CWMIN, desc->cw_min);
-	rt2x00_set_field32(&word, TXD_W2_CWMAX, desc->cw_max);
+	rt2x00_set_field32(&word, TXD_W2_AIFS, txdesc->aifs);
+	rt2x00_set_field32(&word, TXD_W2_CWMIN, txdesc->cw_min);
+	rt2x00_set_field32(&word, TXD_W2_CWMAX, txdesc->cw_max);
 	rt2x00_desc_write(txd, 2, word);
 
 	rt2x00_desc_read(txd, 3, &word);
-	rt2x00_set_field32(&word, TXD_W3_PLCP_SIGNAL, desc->signal);
-	rt2x00_set_field32(&word, TXD_W3_PLCP_SERVICE, desc->service);
-	rt2x00_set_field32(&word, TXD_W3_PLCP_LENGTH_LOW, desc->length_low);
-	rt2x00_set_field32(&word, TXD_W3_PLCP_LENGTH_HIGH, desc->length_high);
+	rt2x00_set_field32(&word, TXD_W3_PLCP_SIGNAL, txdesc->signal);
+	rt2x00_set_field32(&word, TXD_W3_PLCP_SERVICE, txdesc->service);
+	rt2x00_set_field32(&word, TXD_W3_PLCP_LENGTH_LOW, txdesc->length_low);
+	rt2x00_set_field32(&word, TXD_W3_PLCP_LENGTH_HIGH, txdesc->length_high);
 	rt2x00_desc_write(txd, 3, word);
 
 	rt2x00_desc_read(txd, 10, &word);
 	rt2x00_set_field32(&word, TXD_W10_RTS,
-			   test_bit(ENTRY_TXD_RTS_FRAME, &desc->flags));
+			   test_bit(ENTRY_TXD_RTS_FRAME, &txdesc->flags));
 	rt2x00_desc_write(txd, 10, word);
 
 	rt2x00_desc_read(txd, 0, &word);
 	rt2x00_set_field32(&word, TXD_W0_OWNER_NIC, 1);
 	rt2x00_set_field32(&word, TXD_W0_VALID, 1);
 	rt2x00_set_field32(&word, TXD_W0_MORE_FRAG,
-			   test_bit(ENTRY_TXD_MORE_FRAG, &desc->flags));
+			   test_bit(ENTRY_TXD_MORE_FRAG, &txdesc->flags));
 	rt2x00_set_field32(&word, TXD_W0_ACK,
-			   test_bit(ENTRY_TXD_ACK, &desc->flags));
+			   test_bit(ENTRY_TXD_ACK, &txdesc->flags));
 	rt2x00_set_field32(&word, TXD_W0_TIMESTAMP,
-			   test_bit(ENTRY_TXD_REQ_TIMESTAMP, &desc->flags));
+			   test_bit(ENTRY_TXD_REQ_TIMESTAMP, &txdesc->flags));
 	rt2x00_set_field32(&word, TXD_W0_OFDM,
-			   test_bit(ENTRY_TXD_OFDM_RATE, &desc->flags));
+			   test_bit(ENTRY_TXD_OFDM_RATE, &txdesc->flags));
 	rt2x00_set_field32(&word, TXD_W0_CIPHER_OWNER, 1);
-	rt2x00_set_field32(&word, TXD_W0_IFS, desc->ifs);
+	rt2x00_set_field32(&word, TXD_W0_IFS, txdesc->ifs);
 	rt2x00_set_field32(&word, TXD_W0_RETRY_MODE,
 			   !!(control->flags &
 			      IEEE80211_TXCTL_LONG_RETRY_LIMIT));
@@ -1218,46 +1215,46 @@ static void rt2500pci_kick_tx_queue(struct rt2x00_dev *rt2x00dev,
 /*
  * RX control handlers
  */
-static void rt2500pci_fill_rxdone(struct data_entry *entry,
-				  struct rxdata_entry_desc *desc)
+static void rt2500pci_fill_rxdone(struct queue_entry *entry,
+				  struct rxdone_entry_desc *rxdesc)
 {
-	__le32 *rxd = entry->priv;
+	struct queue_entry_priv_pci_rx *priv_rx = entry->priv_data;
 	u32 word0;
 	u32 word2;
 
-	rt2x00_desc_read(rxd, 0, &word0);
-	rt2x00_desc_read(rxd, 2, &word2);
+	rt2x00_desc_read(priv_rx->desc, 0, &word0);
+	rt2x00_desc_read(priv_rx->desc, 2, &word2);
 
-	desc->flags = 0;
+	rxdesc->flags = 0;
 	if (rt2x00_get_field32(word0, RXD_W0_CRC_ERROR))
-		desc->flags |= RX_FLAG_FAILED_FCS_CRC;
+		rxdesc->flags |= RX_FLAG_FAILED_FCS_CRC;
 	if (rt2x00_get_field32(word0, RXD_W0_PHYSICAL_ERROR))
-		desc->flags |= RX_FLAG_FAILED_PLCP_CRC;
-
-	desc->signal = rt2x00_get_field32(word2, RXD_W2_SIGNAL);
-	desc->rssi = rt2x00_get_field32(word2, RXD_W2_RSSI) -
-	    entry->ring->rt2x00dev->rssi_offset;
-	desc->ofdm = rt2x00_get_field32(word0, RXD_W0_OFDM);
-	desc->size = rt2x00_get_field32(word0, RXD_W0_DATABYTE_COUNT);
-	desc->my_bss = !!rt2x00_get_field32(word0, RXD_W0_MY_BSS);
+		rxdesc->flags |= RX_FLAG_FAILED_PLCP_CRC;
+
+	rxdesc->signal = rt2x00_get_field32(word2, RXD_W2_SIGNAL);
+	rxdesc->rssi = rt2x00_get_field32(word2, RXD_W2_RSSI) -
+	    entry->queue->rt2x00dev->rssi_offset;
+	rxdesc->ofdm = rt2x00_get_field32(word0, RXD_W0_OFDM);
+	rxdesc->size = rt2x00_get_field32(word0, RXD_W0_DATABYTE_COUNT);
+	rxdesc->my_bss = !!rt2x00_get_field32(word0, RXD_W0_MY_BSS);
 }
 
 /*
  * Interrupt functions.
  */
-static void rt2500pci_txdone(struct rt2x00_dev *rt2x00dev, const int queue)
+static void rt2500pci_txdone(struct rt2x00_dev *rt2x00dev,
+			     const enum ieee80211_tx_queue queue_idx)
 {
-	struct data_ring *ring = rt2x00lib_get_ring(rt2x00dev, queue);
-	struct data_entry *entry;
-	__le32 *txd;
+	struct data_queue *queue = rt2x00queue_get_queue(rt2x00dev, queue_idx);
+	struct queue_entry_priv_pci_tx *priv_tx;
+	struct queue_entry *entry;
+	struct txdone_entry_desc txdesc;
 	u32 word;
-	int tx_status;
-	int retry;
 
-	while (!rt2x00_ring_empty(ring)) {
-		entry = rt2x00_get_data_entry_done(ring);
-		txd = entry->priv;
-		rt2x00_desc_read(txd, 0, &word);
+	while (!rt2x00queue_empty(queue)) {
+		entry = rt2x00queue_get_entry(queue, Q_INDEX_DONE);
+		priv_tx = entry->priv_data;
+		rt2x00_desc_read(priv_tx->desc, 0, &word);
 
 		if (rt2x00_get_field32(word, TXD_W0_OWNER_NIC) ||
 		    !rt2x00_get_field32(word, TXD_W0_VALID))
@@ -1266,10 +1263,10 @@ static void rt2500pci_txdone(struct rt2x00_dev *rt2x00dev, const int queue)
 		/*
 		 * Obtain the status about this packet.
 		 */
-		tx_status = rt2x00_get_field32(word, TXD_W0_RESULT);
-		retry = rt2x00_get_field32(word, TXD_W0_RETRY_COUNT);
+		txdesc.status = rt2x00_get_field32(word, TXD_W0_RESULT);
+		txdesc.retry = rt2x00_get_field32(word, TXD_W0_RETRY_COUNT);
 
-		rt2x00pci_txdone(rt2x00dev, entry, tx_status, retry);
+		rt2x00pci_txdone(rt2x00dev, entry, &txdesc);
 	}
 }
 
@@ -1705,9 +1702,9 @@ static int rt2500pci_probe_hw(struct rt2x00_dev *rt2x00dev)
 	rt2500pci_probe_hw_mode(rt2x00dev);
 
 	/*
-	 * This device requires the beacon ring
+	 * This device requires the atim queue
 	 */
-	__set_bit(DRIVER_REQUIRE_BEACON_RING, &rt2x00dev->flags);
+	__set_bit(DRIVER_REQUIRE_ATIM_QUEUE, &rt2x00dev->flags);
 
 	/*
 	 * Set the rssi offset.
@@ -1871,12 +1868,42 @@ static const struct rt2x00lib_ops rt2500pci_rt2x00_ops = {
 	.config			= rt2500pci_config,
 };
 
+static const struct data_queue_desc rt2500pci_queue_rx = {
+	.entry_num		= RX_ENTRIES,
+	.data_size		= DATA_FRAME_SIZE,
+	.desc_size		= RXD_DESC_SIZE,
+	.priv_size		= sizeof(struct queue_entry_priv_pci_rx),
+};
+
+static const struct data_queue_desc rt2500pci_queue_tx = {
+	.entry_num		= TX_ENTRIES,
+	.data_size		= DATA_FRAME_SIZE,
+	.desc_size		= TXD_DESC_SIZE,
+	.priv_size		= sizeof(struct queue_entry_priv_pci_tx),
+};
+
+static const struct data_queue_desc rt2500pci_queue_bcn = {
+	.entry_num		= BEACON_ENTRIES,
+	.data_size		= MGMT_FRAME_SIZE,
+	.desc_size		= TXD_DESC_SIZE,
+	.priv_size		= sizeof(struct queue_entry_priv_pci_tx),
+};
+
+static const struct data_queue_desc rt2500pci_queue_atim = {
+	.entry_num		= ATIM_ENTRIES,
+	.data_size		= DATA_FRAME_SIZE,
+	.desc_size		= TXD_DESC_SIZE,
+	.priv_size		= sizeof(struct queue_entry_priv_pci_tx),
+};
+
 static const struct rt2x00_ops rt2500pci_ops = {
 	.name		= KBUILD_MODNAME,
-	.rxd_size	= RXD_DESC_SIZE,
-	.txd_size	= TXD_DESC_SIZE,
 	.eeprom_size	= EEPROM_SIZE,
 	.rf_size	= RF_SIZE,
+	.rx		= &rt2500pci_queue_rx,
+	.tx		= &rt2500pci_queue_tx,
+	.bcn		= &rt2500pci_queue_bcn,
+	.atim		= &rt2500pci_queue_atim,
 	.lib		= &rt2500pci_rt2x00_ops,
 	.hw		= &rt2500pci_mac80211_ops,
 #ifdef CONFIG_RT2X00_LIB_DEBUGFS

drivers/net/wireless/rt2x00/rt2500usb.c

@@ -1027,10 +1027,10 @@ static int rt2500usb_set_device_state(struct rt2x00_dev *rt2x00dev,
  */
 static void rt2500usb_write_tx_desc(struct rt2x00_dev *rt2x00dev,
 				    struct sk_buff *skb,
-				    struct txdata_entry_desc *desc,
+				    struct txentry_desc *txdesc,
 				    struct ieee80211_tx_control *control)
 {
-	struct skb_desc *skbdesc = get_skb_desc(skb);
+	struct skb_frame_desc *skbdesc = get_skb_frame_desc(skb);
 	__le32 *txd = skbdesc->desc;
 	u32 word;
 
@@ -1039,31 +1039,31 @@ static void rt2500usb_write_tx_desc(struct rt2x00_dev *rt2x00dev,
 	 */
 	rt2x00_desc_read(txd, 1, &word);
 	rt2x00_set_field32(&word, TXD_W1_IV_OFFSET, IEEE80211_HEADER);
-	rt2x00_set_field32(&word, TXD_W1_AIFS, desc->aifs);
-	rt2x00_set_field32(&word, TXD_W1_CWMIN, desc->cw_min);
-	rt2x00_set_field32(&word, TXD_W1_CWMAX, desc->cw_max);
+	rt2x00_set_field32(&word, TXD_W1_AIFS, txdesc->aifs);
+	rt2x00_set_field32(&word, TXD_W1_CWMIN, txdesc->cw_min);
+	rt2x00_set_field32(&word, TXD_W1_CWMAX, txdesc->cw_max);
 	rt2x00_desc_write(txd, 1, word);
 
 	rt2x00_desc_read(txd, 2, &word);
-	rt2x00_set_field32(&word, TXD_W2_PLCP_SIGNAL, desc->signal);
-	rt2x00_set_field32(&word, TXD_W2_PLCP_SERVICE, desc->service);
-	rt2x00_set_field32(&word, TXD_W2_PLCP_LENGTH_LOW, desc->length_low);
-	rt2x00_set_field32(&word, TXD_W2_PLCP_LENGTH_HIGH, desc->length_high);
+	rt2x00_set_field32(&word, TXD_W2_PLCP_SIGNAL, txdesc->signal);
+	rt2x00_set_field32(&word, TXD_W2_PLCP_SERVICE, txdesc->service);
+	rt2x00_set_field32(&word, TXD_W2_PLCP_LENGTH_LOW, txdesc->length_low);
+	rt2x00_set_field32(&word, TXD_W2_PLCP_LENGTH_HIGH, txdesc->length_high);
 	rt2x00_desc_write(txd, 2, word);
 
 	rt2x00_desc_read(txd, 0, &word);
 	rt2x00_set_field32(&word, TXD_W0_RETRY_LIMIT, control->retry_limit);
 	rt2x00_set_field32(&word, TXD_W0_MORE_FRAG,
-			   test_bit(ENTRY_TXD_MORE_FRAG, &desc->flags));
+			   test_bit(ENTRY_TXD_MORE_FRAG, &txdesc->flags));
 	rt2x00_set_field32(&word, TXD_W0_ACK,
-			   test_bit(ENTRY_TXD_ACK, &desc->flags));
+			   test_bit(ENTRY_TXD_ACK, &txdesc->flags));
 	rt2x00_set_field32(&word, TXD_W0_TIMESTAMP,
-			   test_bit(ENTRY_TXD_REQ_TIMESTAMP, &desc->flags));
+			   test_bit(ENTRY_TXD_REQ_TIMESTAMP, &txdesc->flags));
 	rt2x00_set_field32(&word, TXD_W0_OFDM,
-			   test_bit(ENTRY_TXD_OFDM_RATE, &desc->flags));
+			   test_bit(ENTRY_TXD_OFDM_RATE, &txdesc->flags));
 	rt2x00_set_field32(&word, TXD_W0_NEW_SEQ,
 			   !!(control->flags & IEEE80211_TXCTL_FIRST_FRAGMENT));
-	rt2x00_set_field32(&word, TXD_W0_IFS, desc->ifs);
+	rt2x00_set_field32(&word, TXD_W0_IFS, txdesc->ifs);
 	rt2x00_set_field32(&word, TXD_W0_DATABYTE_COUNT, skbdesc->data_len);
 	rt2x00_set_field32(&word, TXD_W0_CIPHER, CIPHER_NONE);
 	rt2x00_desc_write(txd, 0, word);
@@ -1114,42 +1114,61 @@ static void rt2500usb_kick_tx_queue(struct rt2x00_dev *rt2x00dev,
 /*
  * RX control handlers
  */
-static void rt2500usb_fill_rxdone(struct data_entry *entry,
-				  struct rxdata_entry_desc *desc)
+static void rt2500usb_fill_rxdone(struct queue_entry *entry,
+				  struct rxdone_entry_desc *rxdesc)
 {
-	struct skb_desc *skbdesc = get_skb_desc(entry->skb);
-	struct urb *urb = entry->priv;
-	__le32 *rxd = (__le32 *)(entry->skb->data +
-				 (urb->actual_length - entry->ring->desc_size));
+	struct queue_entry_priv_usb_rx *priv_rx = entry->priv_data;
+	struct skb_frame_desc *skbdesc = get_skb_frame_desc(entry->skb);
+	__le32 *rxd =
+	    (__le32 *)(entry->skb->data +
+		       (priv_rx->urb->actual_length - entry->queue->desc_size));
+	struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)entry->skb->data;
+	int header_size = ieee80211_get_hdrlen(le16_to_cpu(hdr->frame_control));
 	u32 word0;
 	u32 word1;
 
 	rt2x00_desc_read(rxd, 0, &word0);
 	rt2x00_desc_read(rxd, 1, &word1);
 
-	desc->flags = 0;
+	rxdesc->flags = 0;
 	if (rt2x00_get_field32(word0, RXD_W0_CRC_ERROR))
-		desc->flags |= RX_FLAG_FAILED_FCS_CRC;
+		rxdesc->flags |= RX_FLAG_FAILED_FCS_CRC;
 	if (rt2x00_get_field32(word0, RXD_W0_PHYSICAL_ERROR))
-		desc->flags |= RX_FLAG_FAILED_PLCP_CRC;
+		rxdesc->flags |= RX_FLAG_FAILED_PLCP_CRC;
 
 	/*
 	 * Obtain the status about this packet.
 	 */
-	desc->signal = rt2x00_get_field32(word1, RXD_W1_SIGNAL);
-	desc->rssi = rt2x00_get_field32(word1, RXD_W1_RSSI) -
-	    entry->ring->rt2x00dev->rssi_offset;
-	desc->ofdm = rt2x00_get_field32(word0, RXD_W0_OFDM);
-	desc->size = rt2x00_get_field32(word0, RXD_W0_DATABYTE_COUNT);
-	desc->my_bss = !!rt2x00_get_field32(word0, RXD_W0_MY_BSS);
+	rxdesc->signal = rt2x00_get_field32(word1, RXD_W1_SIGNAL);
+	rxdesc->rssi = rt2x00_get_field32(word1, RXD_W1_RSSI) -
+	    entry->queue->rt2x00dev->rssi_offset;
+	rxdesc->ofdm = rt2x00_get_field32(word0, RXD_W0_OFDM);
+	rxdesc->size = rt2x00_get_field32(word0, RXD_W0_DATABYTE_COUNT);
+	rxdesc->my_bss = !!rt2x00_get_field32(word0, RXD_W0_MY_BSS);
 
 	/*
-	 * Set descriptor and data pointer.
+	 * The data behind the ieee80211 header must be
+	 * aligned on a 4 byte boundary.
+	 */
+	if (header_size % 4 == 0) {
+		skb_push(entry->skb, 2);
+		memmove(entry->skb->data, entry->skb->data + 2,
+			entry->skb->len - 2);
+	}
+
+	/*
+	 * Set descriptor pointer.
 	 */
-	skbdesc->desc = entry->skb->data + desc->size;
-	skbdesc->desc_len = entry->ring->desc_size;
 	skbdesc->data = entry->skb->data;
-	skbdesc->data_len = desc->size;
+	skbdesc->data_len = entry->queue->data_size;
+	skbdesc->desc = entry->skb->data + rxdesc->size;
+	skbdesc->desc_len = entry->queue->desc_size;
+
+	/*
+	 * Remove descriptor from skb buffer and trim the whole thing
+	 * down to only contain data.
+	 */
+	skb_trim(entry->skb, rxdesc->size);
 }
 
 /*
@@ -1157,10 +1176,10 @@ static void rt2500usb_fill_rxdone(struct data_entry *entry,
  */
 static void rt2500usb_beacondone(struct urb *urb)
 {
-	struct data_entry *entry = (struct data_entry *)urb->context;
-	struct data_ring *ring = entry->ring;
+	struct queue_entry *entry = (struct queue_entry *)urb->context;
+	struct queue_entry_priv_usb_bcn *priv_bcn = entry->priv_data;
 
-	if (!test_bit(DEVICE_ENABLED_RADIO, &ring->rt2x00dev->flags))
+	if (!test_bit(DEVICE_ENABLED_RADIO, &entry->queue->rt2x00dev->flags))
 		return;
 
 	/*
@@ -1169,18 +1188,11 @@ static void rt2500usb_beacondone(struct urb *urb)
 	 * Otherwise we should free the sk_buffer, the device
 	 * should be doing the rest of the work now.
 	 */
-	if (ring->index == 1) {
-		rt2x00_ring_index_done_inc(ring);
-		entry = rt2x00_get_data_entry(ring);
-		usb_submit_urb(entry->priv, GFP_ATOMIC);
-		rt2x00_ring_index_inc(ring);
-	} else if (ring->index_done == 1) {
-		entry = rt2x00_get_data_entry_done(ring);
-		if (entry->skb) {
-			dev_kfree_skb(entry->skb);
-			entry->skb = NULL;
-		}
-		rt2x00_ring_index_done_inc(ring);
+	if (priv_bcn->guardian_urb == urb) {
+		usb_submit_urb(priv_bcn->urb, GFP_ATOMIC);
+	} else if (priv_bcn->urb == urb) {
+		dev_kfree_skb(entry->skb);
+		entry->skb = NULL;
 	}
 }
 
@@ -1599,9 +1611,10 @@ static int rt2500usb_probe_hw(struct rt2x00_dev *rt2x00dev)
 	rt2500usb_probe_hw_mode(rt2x00dev);
 
 	/*
-	 * This device requires the beacon ring
+	 * This device requires the atim queue
 	 */
-	__set_bit(DRIVER_REQUIRE_BEACON_RING, &rt2x00dev->flags);
+	__set_bit(DRIVER_REQUIRE_ATIM_QUEUE, &rt2x00dev->flags);
+	__set_bit(DRIVER_REQUIRE_BEACON_GUARD, &rt2x00dev->flags);
 
 	/*
 	 * Set the rssi offset.
@@ -1691,12 +1704,11 @@ static int rt2500usb_beacon_update(struct ieee80211_hw *hw,
 				   struct ieee80211_tx_control *control)
 {
 	struct rt2x00_dev *rt2x00dev = hw->priv;
-	struct usb_device *usb_dev =
-	    interface_to_usbdev(rt2x00dev_usb(rt2x00dev));
-	struct skb_desc *desc;
-	struct data_ring *ring;
-	struct data_entry *beacon;
-	struct data_entry *guardian;
+	struct usb_device *usb_dev = rt2x00dev_usb_dev(rt2x00dev);
+	struct queue_entry_priv_usb_bcn *priv_bcn;
+	struct skb_frame_desc *skbdesc;
+	struct data_queue *queue;
+	struct queue_entry *entry;
 	int pipe = usb_sndbulkpipe(usb_dev, 1);
 	int length;
 
@@ -1706,32 +1718,26 @@ static int rt2500usb_beacon_update(struct ieee80211_hw *hw,
 	 * initialization.
 	 */
 	control->queue = IEEE80211_TX_QUEUE_BEACON;
-	ring = rt2x00lib_get_ring(rt2x00dev, control->queue);
-
-	/*
-	 * Obtain 2 entries, one for the guardian byte,
-	 * the second for the actual beacon.
-	 */
-	guardian = rt2x00_get_data_entry(ring);
-	rt2x00_ring_index_inc(ring);
-	beacon = rt2x00_get_data_entry(ring);
+	queue = rt2x00queue_get_queue(rt2x00dev, control->queue);
+	entry = rt2x00queue_get_entry(queue, Q_INDEX);
+	priv_bcn = entry->priv_data;
 
 	/*
 	 * Add the descriptor in front of the skb.
 	 */
-	skb_push(skb, ring->desc_size);
-	memset(skb->data, 0, ring->desc_size);
+	skb_push(skb, queue->desc_size);
+	memset(skb->data, 0, queue->desc_size);
 
 	/*
 	 * Fill in skb descriptor
 	 */
-	desc = get_skb_desc(skb);
-	desc->desc_len = ring->desc_size;
-	desc->data_len = skb->len - ring->desc_size;
-	desc->desc = skb->data;
-	desc->data = skb->data + ring->desc_size;
-	desc->ring = ring;
-	desc->entry = beacon;
+	skbdesc = get_skb_frame_desc(skb);
+	memset(skbdesc, 0, sizeof(*skbdesc));
+	skbdesc->data = skb->data + queue->desc_size;
+	skbdesc->data_len = queue->data_size;
+	skbdesc->desc = skb->data;
+	skbdesc->desc_len = queue->desc_size;
+	skbdesc->entry = entry;
 
 	rt2x00lib_write_tx_desc(rt2x00dev, skb, control);
 
@@ -1742,22 +1748,23 @@ static int rt2500usb_beacon_update(struct ieee80211_hw *hw,
 	 */
 	length = rt2500usb_get_tx_data_len(rt2x00dev, skb);
 
-	usb_fill_bulk_urb(beacon->priv, usb_dev, pipe,
-			  skb->data, length, rt2500usb_beacondone, beacon);
+	usb_fill_bulk_urb(priv_bcn->urb, usb_dev, pipe,
+			  skb->data, length, rt2500usb_beacondone, entry);
 
 	/*
 	 * Second we need to create the guardian byte.
 	 * We only need a single byte, so lets recycle
 	 * the 'flags' field we are not using for beacons.
 	 */
-	guardian->flags = 0;
-	usb_fill_bulk_urb(guardian->priv, usb_dev, pipe,
-			  &guardian->flags, 1, rt2500usb_beacondone, guardian);
+	priv_bcn->guardian_data = 0;
+	usb_fill_bulk_urb(priv_bcn->guardian_urb, usb_dev, pipe,
+			  &priv_bcn->guardian_data, 1, rt2500usb_beacondone,
+			  entry);
 
 	/*
 	 * Send out the guardian byte.
 	 */
-	usb_submit_urb(guardian->priv, GFP_ATOMIC);
+	usb_submit_urb(priv_bcn->guardian_urb, GFP_ATOMIC);
 
 	/*
 	 * Enable beacon generation.
@@ -1805,12 +1812,42 @@ static const struct rt2x00lib_ops rt2500usb_rt2x00_ops = {
 	.config			= rt2500usb_config,
 };
 
+static const struct data_queue_desc rt2500usb_queue_rx = {
+	.entry_num		= RX_ENTRIES,
+	.data_size		= DATA_FRAME_SIZE,
+	.desc_size		= RXD_DESC_SIZE,
+	.priv_size		= sizeof(struct queue_entry_priv_usb_rx),
+};
+
+static const struct data_queue_desc rt2500usb_queue_tx = {
+	.entry_num		= TX_ENTRIES,
+	.data_size		= DATA_FRAME_SIZE,
+	.desc_size		= TXD_DESC_SIZE,
+	.priv_size		= sizeof(struct queue_entry_priv_usb_tx),
+};
+
+static const struct data_queue_desc rt2500usb_queue_bcn = {
+	.entry_num		= BEACON_ENTRIES,
+	.data_size		= MGMT_FRAME_SIZE,
+	.desc_size		= TXD_DESC_SIZE,
+	.priv_size		= sizeof(struct queue_entry_priv_usb_bcn),
+};
+
+static const struct data_queue_desc rt2500usb_queue_atim = {
+	.entry_num		= ATIM_ENTRIES,
+	.data_size		= DATA_FRAME_SIZE,
+	.desc_size		= TXD_DESC_SIZE,
+	.priv_size		= sizeof(struct queue_entry_priv_usb_tx),
+};
+
 static const struct rt2x00_ops rt2500usb_ops = {
 	.name		= KBUILD_MODNAME,
-	.rxd_size	= RXD_DESC_SIZE,
-	.txd_size	= TXD_DESC_SIZE,
 	.eeprom_size	= EEPROM_SIZE,
 	.rf_size	= RF_SIZE,
+	.rx		= &rt2500usb_queue_rx,
+	.tx		= &rt2500usb_queue_tx,
+	.bcn		= &rt2500usb_queue_bcn,
+	.atim		= &rt2500usb_queue_atim,
 	.lib		= &rt2500usb_rt2x00_ops,
 	.hw		= &rt2500usb_mac80211_ops,
 #ifdef CONFIG_RT2X00_LIB_DEBUGFS

drivers/net/wireless/rt2x00/rt2x00.h

@@ -27,7 +27,6 @@
 #define RT2X00_H
 
 #include <linux/bitops.h>
-#include <linux/prefetch.h>
 #include <linux/skbuff.h>
 #include <linux/workqueue.h>
 #include <linux/firmware.h>
@@ -38,7 +37,7 @@
 
 #include "rt2x00debug.h"
 #include "rt2x00reg.h"
-#include "rt2x00ring.h"
+#include "rt2x00queue.h"
 
 /*
  * Module information.
@@ -90,26 +89,6 @@
 #define EEPROM(__dev, __msg, __args...) \
 	DEBUG_PRINTK(__dev, KERN_DEBUG, "EEPROM recovery", __msg, ##__args)
 
-/*
- * Ring sizes.
- * Ralink PCI devices demand the Frame size to be a multiple of 128 bytes.
- * DATA_FRAME_SIZE is used for TX, RX, ATIM and PRIO rings.
- * MGMT_FRAME_SIZE is used for the BEACON ring.
- */
-#define DATA_FRAME_SIZE	2432
-#define MGMT_FRAME_SIZE	256
-
-/*
- * Number of entries in a packet ring.
- * PCI devices only need 1 Beacon entry,
- * but USB devices require a second because they
- * have to send a Guardian byte first.
- */
-#define RX_ENTRIES	12
-#define TX_ENTRIES	12
-#define ATIM_ENTRIES	1
-#define BEACON_ENTRIES	2
-
 /*
  * Standard timing and size defines.
  * These values should follow the ieee80211 specifications.
@@ -474,12 +453,12 @@ struct rt2x00lib_ops {
 	void (*uninitialize) (struct rt2x00_dev *rt2x00dev);
 
 	/*
-	 * Ring initialization handlers
+	 * queue initialization handlers
 	 */
 	void (*init_rxentry) (struct rt2x00_dev *rt2x00dev,
-			      struct data_entry *entry);
+			      struct queue_entry *entry);
 	void (*init_txentry) (struct rt2x00_dev *rt2x00dev,
-			      struct data_entry *entry);
+			      struct queue_entry *entry);
 
 	/*
 	 * Radio control handlers.
@@ -497,10 +476,10 @@ struct rt2x00lib_ops {
 	 */
 	void (*write_tx_desc) (struct rt2x00_dev *rt2x00dev,
 			       struct sk_buff *skb,
-			       struct txdata_entry_desc *desc,
+			       struct txentry_desc *txdesc,
 			       struct ieee80211_tx_control *control);
 	int (*write_tx_data) (struct rt2x00_dev *rt2x00dev,
-			      struct data_ring *ring, struct sk_buff *skb,
+			      struct data_queue *queue, struct sk_buff *skb,
 			      struct ieee80211_tx_control *control);
 	int (*get_tx_data_len) (struct rt2x00_dev *rt2x00dev,
 				struct sk_buff *skb);
@@ -510,8 +489,8 @@ struct rt2x00lib_ops {
 	/*
 	 * RX control handlers
 	 */
-	void (*fill_rxdone) (struct data_entry *entry,
-			     struct rxdata_entry_desc *desc);
+	void (*fill_rxdone) (struct queue_entry *entry,
+			     struct rxdone_entry_desc *rxdesc);
 
 	/*
 	 * Configuration handlers.
@@ -540,10 +519,12 @@ struct rt2x00lib_ops {
  */
 struct rt2x00_ops {
 	const char *name;
-	const unsigned int rxd_size;
-	const unsigned int txd_size;
 	const unsigned int eeprom_size;
 	const unsigned int rf_size;
+	const struct data_queue_desc *rx;
+	const struct data_queue_desc *tx;
+	const struct data_queue_desc *bcn;
+	const struct data_queue_desc *atim;
 	const struct rt2x00lib_ops *lib;
 	const struct ieee80211_ops *hw;
 #ifdef CONFIG_RT2X00_LIB_DEBUGFS
@@ -570,7 +551,8 @@ enum rt2x00_flags {
 	 * Driver features
 	 */
 	DRIVER_REQUIRE_FIRMWARE,
-	DRIVER_REQUIRE_BEACON_RING,
+	DRIVER_REQUIRE_BEACON_GUARD,
+	DRIVER_REQUIRE_ATIM_QUEUE,
 
 	/*
 	 * Driver configuration
@@ -597,8 +579,10 @@ struct rt2x00_dev {
 	 * macro's should be used for correct typecasting.
 	 */
 	void *dev;
-#define rt2x00dev_pci(__dev)	( (struct pci_dev*)(__dev)->dev )
-#define rt2x00dev_usb(__dev)	( (struct usb_interface*)(__dev)->dev )
+#define rt2x00dev_pci(__dev)	( (struct pci_dev *)(__dev)->dev )
+#define rt2x00dev_usb(__dev)	( (struct usb_interface *)(__dev)->dev )
+#define rt2x00dev_usb_dev(__dev)\
+	( (struct usb_device *)interface_to_usbdev(rt2x00dev_usb(__dev)) )
 
 	/*
 	 * Callback functions.
@@ -757,14 +741,14 @@ struct rt2x00_dev {
 	struct work_struct config_work;
 
 	/*
-	 * Data ring arrays for RX, TX and Beacon.
-	 * The Beacon array also contains the Atim ring
+	 * Data queue arrays for RX, TX and Beacon.
+	 * The Beacon array also contains the Atim queue
 	 * if that is supported by the device.
 	 */
-	int data_rings;
-	struct data_ring *rx;
-	struct data_ring *tx;
-	struct data_ring *bcn;
+	int data_queues;
+	struct data_queue *rx;
+	struct data_queue *tx;
+	struct data_queue *bcn;
 
 	/*
 	 * Firmware image.
@@ -772,37 +756,6 @@ struct rt2x00_dev {
 	const struct firmware *fw;
 };
 
-/*
- * For-each loop for the ring array.
- * All rings have been allocated as a single array,
- * this means we can create a very simply loop macro
- * that is capable of looping through all rings.
- * ring_end(), txring_end() and ring_loop() are helper macro's which
- * should not be used directly. Instead the following should be used:
- * ring_for_each() - Loops through all rings (RX, TX, Beacon & Atim)
- * txring_for_each() - Loops through TX data rings (TX only)
- * txringall_for_each() - Loops through all TX rings (TX, Beacon & Atim)
- */
-#define ring_end(__dev) \
-	&(__dev)->rx[(__dev)->data_rings]
-
-#define txring_end(__dev) \
-	&(__dev)->tx[(__dev)->hw->queues]
-
-#define ring_loop(__entry, __start, __end)			\
-	for ((__entry) = (__start);				\
-	     prefetch(&(__entry)[1]), (__entry) != (__end);	\
-	     (__entry) = &(__entry)[1])
-
-#define ring_for_each(__dev, __entry) \
-	ring_loop(__entry, (__dev)->rx, ring_end(__dev))
-
-#define txring_for_each(__dev, __entry) \
-	ring_loop(__entry, (__dev)->tx, txring_end(__dev))
-
-#define txringall_for_each(__dev, __entry) \
-	ring_loop(__entry, (__dev)->tx, ring_end(__dev))
-
 /*
  * Generic RF access.
  * The RF is being accessed by word index.
@@ -895,20 +848,42 @@ static inline u16 get_duration_res(const unsigned int size, const u8 rate)
 	return ((size * 8 * 10) % rate);
 }
 
-/*
- * Library functions.
+/**
+ * rt2x00queue_get_queue - Convert mac80211 queue index to rt2x00 queue
+ * @rt2x00dev: Pointer to &struct rt2x00_dev.
+ * @queue: mac80211 queue index (see &enum ieee80211_tx_queue).
  */
-struct data_ring *rt2x00lib_get_ring(struct rt2x00_dev *rt2x00dev,
-				     const unsigned int queue);
+struct data_queue *rt2x00queue_get_queue(struct rt2x00_dev *rt2x00dev,
+					 const enum ieee80211_tx_queue queue);
+
+/**
+ * rt2x00queue_get_entry - Get queue entry where the given index points to.
+ * @rt2x00dev: Pointer to &struct rt2x00_dev.
+ * @index: Index identifier for obtaining the correct index.
+ */
+struct queue_entry *rt2x00queue_get_entry(struct data_queue *queue,
+					  enum queue_index index);
+
+/**
+ * rt2x00queue_index_inc - Index incrementation function
+ * @queue: Queue (&struct data_queue) to perform the action on.
+ * @action: Index type (&enum queue_index) to perform the action on.
+ *
+ * This function will increase the requested index on the queue,
+ * it will grab the appropriate locks and handle queue overflow events by
+ * resetting the index to the start of the queue.
+ */
+void rt2x00queue_index_inc(struct data_queue *queue, enum queue_index index);
+
 
 /*
  * Interrupt context handlers.
  */
 void rt2x00lib_beacondone(struct rt2x00_dev *rt2x00dev);
-void rt2x00lib_txdone(struct data_entry *entry,
-		      const int status, const int retry);
-void rt2x00lib_rxdone(struct data_entry *entry, struct sk_buff *skb,
-		      struct rxdata_entry_desc *desc);
+void rt2x00lib_txdone(struct queue_entry *entry,
+		      struct txdone_entry_desc *txdesc);
+void rt2x00lib_rxdone(struct queue_entry *entry,
+		      struct rxdone_entry_desc *rxdesc);
 
 /*
  * TX descriptor initializer

drivers/net/wireless/rt2x00/rt2x00debug.c

@@ -116,7 +116,7 @@ void rt2x00debug_dump_frame(struct rt2x00_dev *rt2x00dev,
 			    struct sk_buff *skb)
 {
 	struct rt2x00debug_intf *intf = rt2x00dev->debugfs_intf;
-	struct skb_desc *desc = get_skb_desc(skb);
+	struct skb_frame_desc *desc = get_skb_frame_desc(skb);
 	struct sk_buff *skbcopy;
 	struct rt2x00dump_hdr *dump_hdr;
 	struct timeval timestamp;
@@ -147,7 +147,7 @@ void rt2x00debug_dump_frame(struct rt2x00_dev *rt2x00dev,
 	dump_hdr->chip_rf = cpu_to_le16(rt2x00dev->chip.rf);
 	dump_hdr->chip_rev = cpu_to_le32(rt2x00dev->chip.rev);
 	dump_hdr->type = cpu_to_le16(desc->frame_type);
-	dump_hdr->ring_index = desc->ring->queue_idx;
+	dump_hdr->queue_index = desc->entry->queue->qid;
 	dump_hdr->entry_index = desc->entry->entry_idx;
 	dump_hdr->timestamp_sec = cpu_to_le32(timestamp.tv_sec);
 	dump_hdr->timestamp_usec = cpu_to_le32(timestamp.tv_usec);
@@ -186,7 +186,7 @@ static int rt2x00debug_file_release(struct inode *inode, struct file *file)
 	return 0;
 }
 
-static int rt2x00debug_open_ring_dump(struct inode *inode, struct file *file)
+static int rt2x00debug_open_queue_dump(struct inode *inode, struct file *file)
 {
 	struct rt2x00debug_intf *intf = inode->i_private;
 	int retval;
@@ -203,7 +203,7 @@ static int rt2x00debug_open_ring_dump(struct inode *inode, struct file *file)
 	return 0;
 }
 
-static int rt2x00debug_release_ring_dump(struct inode *inode, struct file *file)
+static int rt2x00debug_release_queue_dump(struct inode *inode, struct file *file)
 {
 	struct rt2x00debug_intf *intf = inode->i_private;
 
@@ -214,10 +214,10 @@ static int rt2x00debug_release_ring_dump(struct inode *inode, struct file *file)
 	return rt2x00debug_file_release(inode, file);
 }
 
-static ssize_t rt2x00debug_read_ring_dump(struct file *file,
-					  char __user *buf,
-					  size_t length,
-					  loff_t *offset)
+static ssize_t rt2x00debug_read_queue_dump(struct file *file,
+					   char __user *buf,
+					   size_t length,
+					   loff_t *offset)
 {
 	struct rt2x00debug_intf *intf = file->private_data;
 	struct sk_buff *skb;
@@ -248,8 +248,8 @@ exit:
 	return status;
 }
 
-static unsigned int rt2x00debug_poll_ring_dump(struct file *file,
-					       poll_table *wait)
+static unsigned int rt2x00debug_poll_queue_dump(struct file *file,
+					        poll_table *wait)
 {
 	struct rt2x00debug_intf *intf = file->private_data;
 
@@ -261,12 +261,12 @@ static unsigned int rt2x00debug_poll_ring_dump(struct file *file,
 	return 0;
 }
 
-static const struct file_operations rt2x00debug_fop_ring_dump = {
+static const struct file_operations rt2x00debug_fop_queue_dump = {
 	.owner		= THIS_MODULE,
-	.read		= rt2x00debug_read_ring_dump,
-	.poll		= rt2x00debug_poll_ring_dump,
-	.open		= rt2x00debug_open_ring_dump,
-	.release	= rt2x00debug_release_ring_dump,
+	.read		= rt2x00debug_read_queue_dump,
+	.poll		= rt2x00debug_poll_queue_dump,
+	.open		= rt2x00debug_open_queue_dump,
+	.release	= rt2x00debug_release_queue_dump,
 };
 
 #define RT2X00DEBUGFS_OPS_READ(__name, __format, __type)	\
@@ -503,7 +503,7 @@ void rt2x00debug_register(struct rt2x00_dev *rt2x00dev)
 
 	intf->frame_dump_entry =
 	    debugfs_create_file("dump", S_IRUGO, intf->frame_folder,
-				intf, &rt2x00debug_fop_ring_dump);
+				intf, &rt2x00debug_fop_queue_dump);
 	if (IS_ERR(intf->frame_dump_entry))
 		goto exit;
 

drivers/net/wireless/rt2x00/rt2x00dev.c

@@ -30,34 +30,6 @@
 #include "rt2x00lib.h"
 #include "rt2x00dump.h"
 
-/*
- * Ring handler.
- */
-struct data_ring *rt2x00lib_get_ring(struct rt2x00_dev *rt2x00dev,
-				     const unsigned int queue)
-{
-	int beacon = test_bit(DRIVER_REQUIRE_BEACON_RING, &rt2x00dev->flags);
-
-	/*
-	 * Check if we are requesting a reqular TX ring,
-	 * or if we are requesting a Beacon or Atim ring.
-	 * For Atim rings, we should check if it is supported.
-	 */
-	if (queue < rt2x00dev->hw->queues && rt2x00dev->tx)
-		return &rt2x00dev->tx[queue];
-
-	if (!rt2x00dev->bcn || !beacon)
-		return NULL;
-
-	if (queue == IEEE80211_TX_QUEUE_BEACON)
-		return &rt2x00dev->bcn[0];
-	else if (queue == IEEE80211_TX_QUEUE_AFTER_BEACON)
-		return &rt2x00dev->bcn[1];
-
-	return NULL;
-}
-EXPORT_SYMBOL_GPL(rt2x00lib_get_ring);
-
 /*
  * Link tuning handlers
  */
@@ -112,46 +84,6 @@ static void rt2x00lib_stop_link_tuner(struct rt2x00_dev *rt2x00dev)
 	cancel_delayed_work_sync(&rt2x00dev->link.work);
 }
 
-/*
- * Ring initialization
- */
-static void rt2x00lib_init_rxrings(struct rt2x00_dev *rt2x00dev)
-{
-	struct data_ring *ring = rt2x00dev->rx;
-	unsigned int i;
-
-	if (!rt2x00dev->ops->lib->init_rxentry)
-		return;
-
-	if (ring->data_addr)
-		memset(ring->data_addr, 0, rt2x00_get_ring_size(ring));
-
-	for (i = 0; i < ring->stats.limit; i++)
-		rt2x00dev->ops->lib->init_rxentry(rt2x00dev, &ring->entry[i]);
-
-	rt2x00_ring_index_clear(ring);
-}
-
-static void rt2x00lib_init_txrings(struct rt2x00_dev *rt2x00dev)
-{
-	struct data_ring *ring;
-	unsigned int i;
-
-	if (!rt2x00dev->ops->lib->init_txentry)
-		return;
-
-	txringall_for_each(rt2x00dev, ring) {
-		if (ring->data_addr)
-			memset(ring->data_addr, 0, rt2x00_get_ring_size(ring));
-
-		for (i = 0; i < ring->stats.limit; i++)
-			rt2x00dev->ops->lib->init_txentry(rt2x00dev,
-							  &ring->entry[i]);
-
-		rt2x00_ring_index_clear(ring);
-	}
-}
-
 /*
  * Radio control handlers.
  */
@@ -168,10 +100,10 @@ int rt2x00lib_enable_radio(struct rt2x00_dev *rt2x00dev)
 		return 0;
 
 	/*
-	 * Initialize all data rings.
+	 * Initialize all data queues.
 	 */
-	rt2x00lib_init_rxrings(rt2x00dev);
-	rt2x00lib_init_txrings(rt2x00dev);
+	rt2x00queue_init_rx(rt2x00dev);
+	rt2x00queue_init_tx(rt2x00dev);
 
 	/*
 	 * Enable radio.
@@ -504,19 +436,15 @@ static void rt2x00lib_beacondone_scheduled(struct work_struct *work)
 {
 	struct rt2x00_dev *rt2x00dev =
 	    container_of(work, struct rt2x00_dev, beacon_work);
-	struct data_ring *ring =
-	    rt2x00lib_get_ring(rt2x00dev, IEEE80211_TX_QUEUE_BEACON);
-	struct data_entry *entry = rt2x00_get_data_entry(ring);
+	struct ieee80211_tx_control control;
 	struct sk_buff *skb;
 
 	skb = ieee80211_beacon_get(rt2x00dev->hw,
-				   rt2x00dev->interface.id,
-				   &entry->tx_status.control);
+				   rt2x00dev->interface.id, &control);
 	if (!skb)
 		return;
 
-	rt2x00dev->ops->hw->beacon_update(rt2x00dev->hw, skb,
-					  &entry->tx_status.control);
+	rt2x00dev->ops->hw->beacon_update(rt2x00dev->hw, skb, &control);
 
 	dev_kfree_skb(skb);
 }
@@ -530,58 +458,64 @@ void rt2x00lib_beacondone(struct rt2x00_dev *rt2x00dev)
 }
 EXPORT_SYMBOL_GPL(rt2x00lib_beacondone);
 
-void rt2x00lib_txdone(struct data_entry *entry,
-		      const int status, const int retry)
+void rt2x00lib_txdone(struct queue_entry *entry,
+		      struct txdone_entry_desc *txdesc)
 {
-	struct rt2x00_dev *rt2x00dev = entry->ring->rt2x00dev;
-	struct ieee80211_tx_status *tx_status = &entry->tx_status;
-	struct ieee80211_low_level_stats *stats = &rt2x00dev->low_level_stats;
-	int success = !!(status == TX_SUCCESS || status == TX_SUCCESS_RETRY);
-	int fail = !!(status == TX_FAIL_RETRY || status == TX_FAIL_INVALID ||
-		      status == TX_FAIL_OTHER);
+	struct rt2x00_dev *rt2x00dev = entry->queue->rt2x00dev;
+	struct ieee80211_tx_status tx_status;
+	int success = !!(txdesc->status == TX_SUCCESS ||
+			 txdesc->status == TX_SUCCESS_RETRY);
+	int fail = !!(txdesc->status == TX_FAIL_RETRY ||
+		      txdesc->status == TX_FAIL_INVALID ||
+		      txdesc->status == TX_FAIL_OTHER);
 
 	/*
 	 * Update TX statistics.
 	 */
-	tx_status->flags = 0;
-	tx_status->ack_signal = 0;
-	tx_status->excessive_retries = (status == TX_FAIL_RETRY);
-	tx_status->retry_count = retry;
 	rt2x00dev->link.qual.tx_success += success;
-	rt2x00dev->link.qual.tx_failed += retry + fail;
+	rt2x00dev->link.qual.tx_failed += txdesc->retry + fail;
 
-	if (!(tx_status->control.flags & IEEE80211_TXCTL_NO_ACK)) {
+	/*
+	 * Initialize TX status
+	 */
+	tx_status.flags = 0;
+	tx_status.ack_signal = 0;
+	tx_status.excessive_retries = (txdesc->status == TX_FAIL_RETRY);
+	tx_status.retry_count = txdesc->retry;
+	memcpy(&tx_status.control, txdesc->control, sizeof(txdesc->control));
+
+	if (!(tx_status.control.flags & IEEE80211_TXCTL_NO_ACK)) {
 		if (success)
-			tx_status->flags |= IEEE80211_TX_STATUS_ACK;
+			tx_status.flags |= IEEE80211_TX_STATUS_ACK;
 		else
-			stats->dot11ACKFailureCount++;
+			rt2x00dev->low_level_stats.dot11ACKFailureCount++;
 	}
 
-	tx_status->queue_length = entry->ring->stats.limit;
-	tx_status->queue_number = tx_status->control.queue;
+	tx_status.queue_length = entry->queue->limit;
+	tx_status.queue_number = tx_status.control.queue;
 
-	if (tx_status->control.flags & IEEE80211_TXCTL_USE_RTS_CTS) {
+	if (tx_status.control.flags & IEEE80211_TXCTL_USE_RTS_CTS) {
 		if (success)
-			stats->dot11RTSSuccessCount++;
+			rt2x00dev->low_level_stats.dot11RTSSuccessCount++;
 		else
-			stats->dot11RTSFailureCount++;
+			rt2x00dev->low_level_stats.dot11RTSFailureCount++;
 	}
 
 	/*
 	 * Send the tx_status to mac80211 & debugfs.
 	 * mac80211 will clean up the skb structure.
 	 */
-	get_skb_desc(entry->skb)->frame_type = DUMP_FRAME_TXDONE;
+	get_skb_frame_desc(entry->skb)->frame_type = DUMP_FRAME_TXDONE;
 	rt2x00debug_dump_frame(rt2x00dev, entry->skb);
-	ieee80211_tx_status_irqsafe(rt2x00dev->hw, entry->skb, tx_status);
+	ieee80211_tx_status_irqsafe(rt2x00dev->hw, entry->skb, &tx_status);
 	entry->skb = NULL;
 }
 EXPORT_SYMBOL_GPL(rt2x00lib_txdone);
 
-void rt2x00lib_rxdone(struct data_entry *entry, struct sk_buff *skb,
-		      struct rxdata_entry_desc *desc)
+void rt2x00lib_rxdone(struct queue_entry *entry,
+		      struct rxdone_entry_desc *rxdesc)
 {
-	struct rt2x00_dev *rt2x00dev = entry->ring->rt2x00dev;
+	struct rt2x00_dev *rt2x00dev = entry->queue->rt2x00dev;
 	struct ieee80211_rx_status *rx_status = &rt2x00dev->rx_status;
 	struct ieee80211_hw_mode *mode;
 	struct ieee80211_rate *rate;
@@ -602,12 +536,12 @@ void rt2x00lib_rxdone(struct data_entry *entry, struct sk_buff *skb,
 		 * the signal is the PLCP value. If it was received with
 		 * a CCK bitrate the signal is the rate in 0.5kbit/s.
 		 */
-		if (!desc->ofdm)
+		if (!rxdesc->ofdm)
 			val = DEVICE_GET_RATE_FIELD(rate->val, RATE);
 		else
 			val = DEVICE_GET_RATE_FIELD(rate->val, PLCP);
 
-		if (val == desc->signal) {
+		if (val == rxdesc->signal) {
 			val = rate->val;
 			break;
 		}
@@ -616,26 +550,28 @@ void rt2x00lib_rxdone(struct data_entry *entry, struct sk_buff *skb,
 	/*
 	 * Only update link status if this is a beacon frame carrying our bssid.
 	 */
-	hdr = (struct ieee80211_hdr*)skb->data;
+	hdr = (struct ieee80211_hdr*)entry->skb->data;
 	fc = le16_to_cpu(hdr->frame_control);
-	if (is_beacon(fc) && desc->my_bss)
-		rt2x00lib_update_link_stats(&rt2x00dev->link, desc->rssi);
+	if (is_beacon(fc) && rxdesc->my_bss)
+		rt2x00lib_update_link_stats(&rt2x00dev->link, rxdesc->rssi);
 
 	rt2x00dev->link.qual.rx_success++;
 
 	rx_status->rate = val;
 	rx_status->signal =
-	    rt2x00lib_calculate_link_signal(rt2x00dev, desc->rssi);
-	rx_status->ssi = desc->rssi;
-	rx_status->flag = desc->flags;
+	    rt2x00lib_calculate_link_signal(rt2x00dev, rxdesc->rssi);
+	rx_status->ssi = rxdesc->rssi;
+	rx_status->flag = rxdesc->flags;
 	rx_status->antenna = rt2x00dev->link.ant.active.rx;
 
 	/*
-	 * Send frame to mac80211 & debugfs
+	 * Send frame to mac80211 & debugfs.
+	 * mac80211 will clean up the skb structure.
 	 */
-	get_skb_desc(skb)->frame_type = DUMP_FRAME_RXDONE;
-	rt2x00debug_dump_frame(rt2x00dev, skb);
-	ieee80211_rx_irqsafe(rt2x00dev->hw, skb, rx_status);
+	get_skb_frame_desc(entry->skb)->frame_type = DUMP_FRAME_RXDONE;
+	rt2x00debug_dump_frame(rt2x00dev, entry->skb);
+	ieee80211_rx_irqsafe(rt2x00dev->hw, entry->skb, rx_status);
+	entry->skb = NULL;
 }
 EXPORT_SYMBOL_GPL(rt2x00lib_rxdone);
 
@@ -646,9 +582,9 @@ void rt2x00lib_write_tx_desc(struct rt2x00_dev *rt2x00dev,
 			     struct sk_buff *skb,
 			     struct ieee80211_tx_control *control)
 {
-	struct txdata_entry_desc desc;
-	struct skb_desc *skbdesc = get_skb_desc(skb);
-	struct ieee80211_hdr *ieee80211hdr = skbdesc->data;
+	struct txentry_desc txdesc;
+	struct skb_frame_desc *skbdesc = get_skb_frame_desc(skb);
+	struct ieee80211_hdr *ieee80211hdr = (struct ieee80211_hdr *)skb->data;
 	int tx_rate;
 	int bitrate;
 	int length;
@@ -657,22 +593,22 @@ void rt2x00lib_write_tx_desc(struct rt2x00_dev *rt2x00dev,
 	u16 frame_control;
 	u16 seq_ctrl;
 
-	memset(&desc, 0, sizeof(desc));
+	memset(&txdesc, 0, sizeof(txdesc));
 
-	desc.cw_min = skbdesc->ring->tx_params.cw_min;
-	desc.cw_max = skbdesc->ring->tx_params.cw_max;
-	desc.aifs = skbdesc->ring->tx_params.aifs;
+	txdesc.cw_min = skbdesc->entry->queue->cw_min;
+	txdesc.cw_max = skbdesc->entry->queue->cw_max;
+	txdesc.aifs = skbdesc->entry->queue->aifs;
 
 	/*
 	 * Identify queue
 	 */
 	if (control->queue < rt2x00dev->hw->queues)
-		desc.queue = control->queue;
+		txdesc.queue = control->queue;
 	else if (control->queue == IEEE80211_TX_QUEUE_BEACON ||
 		 control->queue == IEEE80211_TX_QUEUE_AFTER_BEACON)
-		desc.queue = QUEUE_MGMT;
+		txdesc.queue = QID_MGMT;
 	else
-		desc.queue = QUEUE_OTHER;
+		txdesc.queue = QID_OTHER;
 
 	/*
 	 * Read required fields from ieee80211 header.
@@ -686,18 +622,18 @@ void rt2x00lib_write_tx_desc(struct rt2x00_dev *rt2x00dev,
 	 * Check whether this frame is to be acked
 	 */
 	if (!(control->flags & IEEE80211_TXCTL_NO_ACK))
-		__set_bit(ENTRY_TXD_ACK, &desc.flags);
+		__set_bit(ENTRY_TXD_ACK, &txdesc.flags);
 
 	/*
 	 * Check if this is a RTS/CTS frame
 	 */
 	if (is_rts_frame(frame_control) || is_cts_frame(frame_control)) {
-		__set_bit(ENTRY_TXD_BURST, &desc.flags);
+		__set_bit(ENTRY_TXD_BURST, &txdesc.flags);
 		if (is_rts_frame(frame_control)) {
-			__set_bit(ENTRY_TXD_RTS_FRAME, &desc.flags);
-			__set_bit(ENTRY_TXD_ACK, &desc.flags);
+			__set_bit(ENTRY_TXD_RTS_FRAME, &txdesc.flags);
+			__set_bit(ENTRY_TXD_ACK, &txdesc.flags);
 		} else
-			__clear_bit(ENTRY_TXD_ACK, &desc.flags);
+			__clear_bit(ENTRY_TXD_ACK, &txdesc.flags);
 		if (control->rts_cts_rate)
 			tx_rate = control->rts_cts_rate;
 	}
@@ -706,14 +642,14 @@ void rt2x00lib_write_tx_desc(struct rt2x00_dev *rt2x00dev,
 	 * Check for OFDM
 	 */
 	if (DEVICE_GET_RATE_FIELD(tx_rate, RATEMASK) & DEV_OFDM_RATEMASK)
-		__set_bit(ENTRY_TXD_OFDM_RATE, &desc.flags);
+		__set_bit(ENTRY_TXD_OFDM_RATE, &txdesc.flags);
 
 	/*
 	 * Check if more fragments are pending
 	 */
 	if (ieee80211_get_morefrag(ieee80211hdr)) {
-		__set_bit(ENTRY_TXD_BURST, &desc.flags);
-		__set_bit(ENTRY_TXD_MORE_FRAG, &desc.flags);
+		__set_bit(ENTRY_TXD_BURST, &txdesc.flags);
+		__set_bit(ENTRY_TXD_MORE_FRAG, &txdesc.flags);
 	}
 
 	/*
@@ -722,7 +658,7 @@ void rt2x00lib_write_tx_desc(struct rt2x00_dev *rt2x00dev,
 	 */
 	if (control->queue == IEEE80211_TX_QUEUE_BEACON ||
 	    is_probe_resp(frame_control))
-		__set_bit(ENTRY_TXD_REQ_TIMESTAMP, &desc.flags);
+		__set_bit(ENTRY_TXD_REQ_TIMESTAMP, &txdesc.flags);
 
 	/*
 	 * Determine with what IFS priority this frame should be send.
@@ -730,22 +666,22 @@ void rt2x00lib_write_tx_desc(struct rt2x00_dev *rt2x00dev,
 	 * or this fragment came after RTS/CTS.
 	 */
 	if ((seq_ctrl & IEEE80211_SCTL_FRAG) > 0 ||
-	    test_bit(ENTRY_TXD_RTS_FRAME, &desc.flags))
-		desc.ifs = IFS_SIFS;
+	    test_bit(ENTRY_TXD_RTS_FRAME, &txdesc.flags))
+		txdesc.ifs = IFS_SIFS;
 	else
-		desc.ifs = IFS_BACKOFF;
+		txdesc.ifs = IFS_BACKOFF;
 
 	/*
 	 * PLCP setup
 	 * Length calculation depends on OFDM/CCK rate.
 	 */
-	desc.signal = DEVICE_GET_RATE_FIELD(tx_rate, PLCP);
-	desc.service = 0x04;
+	txdesc.signal = DEVICE_GET_RATE_FIELD(tx_rate, PLCP);
+	txdesc.service = 0x04;
 
-	length = skbdesc->data_len + FCS_LEN;
-	if (test_bit(ENTRY_TXD_OFDM_RATE, &desc.flags)) {
-		desc.length_high = (length >> 6) & 0x3f;
-		desc.length_low = length & 0x3f;
+	length = skb->len + FCS_LEN;
+	if (test_bit(ENTRY_TXD_OFDM_RATE, &txdesc.flags)) {
+		txdesc.length_high = (length >> 6) & 0x3f;
+		txdesc.length_low = length & 0x3f;
 	} else {
 		bitrate = DEVICE_GET_RATE_FIELD(tx_rate, RATE);
 
@@ -762,27 +698,26 @@ void rt2x00lib_write_tx_desc(struct rt2x00_dev *rt2x00dev,
 			 * Check if we need to set the Length Extension
 			 */
 			if (bitrate == 110 && residual <= 30)
-				desc.service |= 0x80;
+				txdesc.service |= 0x80;
 		}
 
-		desc.length_high = (duration >> 8) & 0xff;
-		desc.length_low = duration & 0xff;
+		txdesc.length_high = (duration >> 8) & 0xff;
+		txdesc.length_low = duration & 0xff;
 
 		/*
 		 * When preamble is enabled we should set the
 		 * preamble bit for the signal.
 		 */
 		if (DEVICE_GET_RATE_FIELD(tx_rate, PREAMBLE))
-			desc.signal |= 0x08;
+			txdesc.signal |= 0x08;
 	}
 
-	rt2x00dev->ops->lib->write_tx_desc(rt2x00dev, skb, &desc, control);
+	rt2x00dev->ops->lib->write_tx_desc(rt2x00dev, skb, &txdesc, control);
 
 	/*
-	 * Update ring entry.
+	 * Update queue entry.
 	 */
 	skbdesc->entry->skb = skb;
-	memcpy(&skbdesc->entry->tx_status.control, control, sizeof(*control));
 
 	/*
 	 * The frame has been completely initialized and ready
@@ -1012,86 +947,6 @@ static int rt2x00lib_probe_hw(struct rt2x00_dev *rt2x00dev)
 /*
  * Initialization/uninitialization handlers.
  */
-static int rt2x00lib_alloc_entries(struct data_ring *ring,
-				   const u16 max_entries, const u16 data_size,
-				   const u16 desc_size)
-{
-	struct data_entry *entry;
-	unsigned int i;
-
-	ring->stats.limit = max_entries;
-	ring->data_size = data_size;
-	ring->desc_size = desc_size;
-
-	/*
-	 * Allocate all ring entries.
-	 */
-	entry = kzalloc(ring->stats.limit * sizeof(*entry), GFP_KERNEL);
-	if (!entry)
-		return -ENOMEM;
-
-	for (i = 0; i < ring->stats.limit; i++) {
-		entry[i].flags = 0;
-		entry[i].ring = ring;
-		entry[i].skb = NULL;
-		entry[i].entry_idx = i;
-	}
-
-	ring->entry = entry;
-
-	return 0;
-}
-
-static int rt2x00lib_alloc_ring_entries(struct rt2x00_dev *rt2x00dev)
-{
-	struct data_ring *ring;
-
-	/*
-	 * Allocate the RX ring.
-	 */
-	if (rt2x00lib_alloc_entries(rt2x00dev->rx, RX_ENTRIES, DATA_FRAME_SIZE,
-				    rt2x00dev->ops->rxd_size))
-		return -ENOMEM;
-
-	/*
-	 * First allocate the TX rings.
-	 */
-	txring_for_each(rt2x00dev, ring) {
-		if (rt2x00lib_alloc_entries(ring, TX_ENTRIES, DATA_FRAME_SIZE,
-					    rt2x00dev->ops->txd_size))
-			return -ENOMEM;
-	}
-
-	if (!test_bit(DRIVER_REQUIRE_BEACON_RING, &rt2x00dev->flags))
-		return 0;
-
-	/*
-	 * Allocate the BEACON ring.
-	 */
-	if (rt2x00lib_alloc_entries(&rt2x00dev->bcn[0], BEACON_ENTRIES,
-				    MGMT_FRAME_SIZE, rt2x00dev->ops->txd_size))
-		return -ENOMEM;
-
-	/*
-	 * Allocate the Atim ring.
-	 */
-	if (rt2x00lib_alloc_entries(&rt2x00dev->bcn[1], ATIM_ENTRIES,
-				    DATA_FRAME_SIZE, rt2x00dev->ops->txd_size))
-		return -ENOMEM;
-
-	return 0;
-}
-
-static void rt2x00lib_free_ring_entries(struct rt2x00_dev *rt2x00dev)
-{
-	struct data_ring *ring;
-
-	ring_for_each(rt2x00dev, ring) {
-		kfree(ring->entry);
-		ring->entry = NULL;
-	}
-}
-
 static void rt2x00lib_uninitialize(struct rt2x00_dev *rt2x00dev)
 {
 	if (!__test_and_clear_bit(DEVICE_INITIALIZED, &rt2x00dev->flags))
@@ -1108,9 +963,9 @@ static void rt2x00lib_uninitialize(struct rt2x00_dev *rt2x00dev)
 	rt2x00dev->ops->lib->uninitialize(rt2x00dev);
 
 	/*
-	 * Free allocated ring entries.
+	 * Free allocated queue entries.
 	 */
-	rt2x00lib_free_ring_entries(rt2x00dev);
+	rt2x00queue_uninitialize(rt2x00dev);
 }
 
 static int rt2x00lib_initialize(struct rt2x00_dev *rt2x00dev)
@@ -1121,13 +976,11 @@ static int rt2x00lib_initialize(struct rt2x00_dev *rt2x00dev)
 		return 0;
 
 	/*
-	 * Allocate all ring entries.
+	 * Allocate all queue entries.
 	 */
-	status = rt2x00lib_alloc_ring_entries(rt2x00dev);
-	if (status) {
-		ERROR(rt2x00dev, "Ring entries allocation failed.\n");
+	status = rt2x00queue_initialize(rt2x00dev);
+	if (status)
 		return status;
-	}
 
 	/*
 	 * Initialize the device.
@@ -1143,15 +996,12 @@ static int rt2x00lib_initialize(struct rt2x00_dev *rt2x00dev)
 	 */
 	status = rt2x00rfkill_register(rt2x00dev);
 	if (status)
-		goto exit_unitialize;
+		goto exit;
 
 	return 0;
 
-exit_unitialize:
-	rt2x00lib_uninitialize(rt2x00dev);
-
 exit:
-	rt2x00lib_free_ring_entries(rt2x00dev);
+	rt2x00lib_uninitialize(rt2x00dev);
 
 	return status;
 }
@@ -1211,65 +1061,6 @@ void rt2x00lib_stop(struct rt2x00_dev *rt2x00dev)
 /*
  * driver allocation handlers.
  */
-static int rt2x00lib_alloc_rings(struct rt2x00_dev *rt2x00dev)
-{
-	struct data_ring *ring;
-	unsigned int index;
-
-	/*
-	 * We need the following rings:
-	 * RX: 1
-	 * TX: hw->queues
-	 * Beacon: 1 (if required)
-	 * Atim: 1 (if required)
-	 */
-	rt2x00dev->data_rings = 1 + rt2x00dev->hw->queues +
-	    (2 * test_bit(DRIVER_REQUIRE_BEACON_RING, &rt2x00dev->flags));
-
-	ring = kzalloc(rt2x00dev->data_rings * sizeof(*ring), GFP_KERNEL);
-	if (!ring) {
-		ERROR(rt2x00dev, "Ring allocation failed.\n");
-		return -ENOMEM;
-	}
-
-	/*
-	 * Initialize pointers
-	 */
-	rt2x00dev->rx = ring;
-	rt2x00dev->tx = &rt2x00dev->rx[1];
-	if (test_bit(DRIVER_REQUIRE_BEACON_RING, &rt2x00dev->flags))
-		rt2x00dev->bcn = &rt2x00dev->tx[rt2x00dev->hw->queues];
-
-	/*
-	 * Initialize ring parameters.
-	 * RX: queue_idx = 0
-	 * TX: queue_idx = IEEE80211_TX_QUEUE_DATA0 + index
-	 * TX: cw_min: 2^5 = 32.
-	 * TX: cw_max: 2^10 = 1024.
-	 */
-	rt2x00dev->rx->rt2x00dev = rt2x00dev;
-	rt2x00dev->rx->queue_idx = 0;
-
-	index = IEEE80211_TX_QUEUE_DATA0;
-	txring_for_each(rt2x00dev, ring) {
-		ring->rt2x00dev = rt2x00dev;
-		ring->queue_idx = index++;
-		ring->tx_params.aifs = 2;
-		ring->tx_params.cw_min = 5;
-		ring->tx_params.cw_max = 10;
-	}
-
-	return 0;
-}
-
-static void rt2x00lib_free_rings(struct rt2x00_dev *rt2x00dev)
-{
-	kfree(rt2x00dev->rx);
-	rt2x00dev->rx = NULL;
-	rt2x00dev->tx = NULL;
-	rt2x00dev->bcn = NULL;
-}
-
 int rt2x00lib_probe_dev(struct rt2x00_dev *rt2x00dev)
 {
 	int retval = -ENOMEM;
@@ -1297,9 +1088,9 @@ int rt2x00lib_probe_dev(struct rt2x00_dev *rt2x00dev)
 	rt2x00dev->interface.type = IEEE80211_IF_TYPE_INVALID;
 
 	/*
-	 * Allocate ring array.
+	 * Allocate queue array.
 	 */
-	retval = rt2x00lib_alloc_rings(rt2x00dev);
+	retval = rt2x00queue_allocate(rt2x00dev);
 	if (retval)
 		goto exit;
 
@@ -1370,9 +1161,9 @@ void rt2x00lib_remove_dev(struct rt2x00_dev *rt2x00dev)
 	rt2x00lib_free_firmware(rt2x00dev);
 
 	/*
-	 * Free ring structures.
+	 * Free queue structures.
 	 */
-	rt2x00lib_free_rings(rt2x00dev);
+	rt2x00queue_free(rt2x00dev);
 }
 EXPORT_SYMBOL_GPL(rt2x00lib_remove_dev);
 

drivers/net/wireless/rt2x00/rt2x00dump.h

@@ -93,8 +93,8 @@ enum rt2x00_dump_type {
  * @chip_rf: RF chipset
  * @chip_rev: Chipset revision
  * @type: The frame type (&rt2x00_dump_type)
- * @ring_index: The index number of the data ring.
- * @entry_index: The index number of the entry inside the data ring.
+ * @queue_index: The index number of the data queue.
+ * @entry_index: The index number of the entry inside the data queue.
  * @timestamp_sec: Timestamp - seconds
  * @timestamp_usec: Timestamp - microseconds
  */
@@ -111,7 +111,7 @@ struct rt2x00dump_hdr {
 	__le32 chip_rev;
 
 	__le16 type;
-	__u8 ring_index;
+	__u8 queue_index;
 	__u8 entry_index;
 
 	__le32 timestamp_sec;

drivers/net/wireless/rt2x00/rt2x00lib.h

@@ -58,6 +58,16 @@ void rt2x00lib_config_antenna(struct rt2x00_dev *rt2x00dev,
 void rt2x00lib_config(struct rt2x00_dev *rt2x00dev,
 		      struct ieee80211_conf *conf, const int force_config);
 
+/*
+ * Queue handlers.
+ */
+void rt2x00queue_init_rx(struct rt2x00_dev *rt2x00dev);
+void rt2x00queue_init_tx(struct rt2x00_dev *rt2x00dev);
+int rt2x00queue_initialize(struct rt2x00_dev *rt2x00dev);
+void rt2x00queue_uninitialize(struct rt2x00_dev *rt2x00dev);
+int rt2x00queue_allocate(struct rt2x00_dev *rt2x00dev);
+void rt2x00queue_free(struct rt2x00_dev *rt2x00dev);
+
 /*
  * Firmware handlers.
  */

drivers/net/wireless/rt2x00/rt2x00mac.c

@@ -30,7 +30,7 @@
 #include "rt2x00lib.h"
 
 static int rt2x00mac_tx_rts_cts(struct rt2x00_dev *rt2x00dev,
-				struct data_ring *ring,
+				struct data_queue *queue,
 				struct sk_buff *frag_skb,
 				struct ieee80211_tx_control *control)
 {
@@ -60,7 +60,7 @@ static int rt2x00mac_tx_rts_cts(struct rt2x00_dev *rt2x00dev,
 				  frag_skb->data, frag_skb->len, control,
 				  (struct ieee80211_rts *)(skb->data));
 
-	if (rt2x00dev->ops->lib->write_tx_data(rt2x00dev, ring, skb, control)) {
+	if (rt2x00dev->ops->lib->write_tx_data(rt2x00dev, queue, skb, control)) {
 		WARNING(rt2x00dev, "Failed to send RTS/CTS frame.\n");
 		return NETDEV_TX_BUSY;
 	}
@@ -73,7 +73,7 @@ int rt2x00mac_tx(struct ieee80211_hw *hw, struct sk_buff *skb,
 {
 	struct rt2x00_dev *rt2x00dev = hw->priv;
 	struct ieee80211_hdr *ieee80211hdr = (struct ieee80211_hdr *)skb->data;
-	struct data_ring *ring;
+	struct data_queue *queue;
 	u16 frame_control;
 
 	/*
@@ -88,10 +88,10 @@ int rt2x00mac_tx(struct ieee80211_hw *hw, struct sk_buff *skb,
 	}
 
 	/*
-	 * Determine which ring to put packet on.
+	 * Determine which queue to put packet on.
 	 */
-	ring = rt2x00lib_get_ring(rt2x00dev, control->queue);
-	if (unlikely(!ring)) {
+	queue = rt2x00queue_get_queue(rt2x00dev, control->queue);
+	if (unlikely(!queue)) {
 		ERROR(rt2x00dev,
 		      "Attempt to send packet over invalid queue %d.\n"
 		      "Please file bug report to %s.\n",
@@ -110,23 +110,23 @@ int rt2x00mac_tx(struct ieee80211_hw *hw, struct sk_buff *skb,
 	if (!is_rts_frame(frame_control) && !is_cts_frame(frame_control) &&
 	    (control->flags & (IEEE80211_TXCTL_USE_RTS_CTS |
 			       IEEE80211_TXCTL_USE_CTS_PROTECT))) {
-		if (rt2x00_ring_free(ring) <= 1) {
+		if (rt2x00queue_available(queue) <= 1) {
 			ieee80211_stop_queue(rt2x00dev->hw, control->queue);
 			return NETDEV_TX_BUSY;
 		}
 
-		if (rt2x00mac_tx_rts_cts(rt2x00dev, ring, skb, control)) {
+		if (rt2x00mac_tx_rts_cts(rt2x00dev, queue, skb, control)) {
 			ieee80211_stop_queue(rt2x00dev->hw, control->queue);
 			return NETDEV_TX_BUSY;
 		}
 	}
 
-	if (rt2x00dev->ops->lib->write_tx_data(rt2x00dev, ring, skb, control)) {
+	if (rt2x00dev->ops->lib->write_tx_data(rt2x00dev, queue, skb, control)) {
 		ieee80211_stop_queue(rt2x00dev->hw, control->queue);
 		return NETDEV_TX_BUSY;
 	}
 
-	if (rt2x00_ring_full(ring))
+	if (rt2x00queue_full(queue))
 		ieee80211_stop_queue(rt2x00dev->hw, control->queue);
 
 	if (rt2x00dev->ops->lib->kick_tx_queue)
@@ -214,7 +214,7 @@ void rt2x00mac_remove_interface(struct ieee80211_hw *hw,
 	    !is_interface_present(intf))
 		return;
 
-	intf->id = 0;
+	intf->id = NULL;
 	intf->type = IEEE80211_IF_TYPE_INVALID;
 	memset(&intf->bssid, 0x00, ETH_ALEN);
 	memset(&intf->mac, 0x00, ETH_ALEN);
@@ -334,9 +334,11 @@ int rt2x00mac_get_tx_stats(struct ieee80211_hw *hw,
 	struct rt2x00_dev *rt2x00dev = hw->priv;
 	unsigned int i;
 
-	for (i = 0; i < hw->queues; i++)
-		memcpy(&stats->data[i], &rt2x00dev->tx[i].stats,
-		       sizeof(rt2x00dev->tx[i].stats));
+	for (i = 0; i < hw->queues; i++) {
+		stats->data[i].len = rt2x00dev->tx[i].length;
+		stats->data[i].limit = rt2x00dev->tx[i].limit;
+		stats->data[i].count = rt2x00dev->tx[i].count;
+	}
 
 	return 0;
 }
@@ -380,14 +382,14 @@ void rt2x00mac_bss_info_changed(struct ieee80211_hw *hw,
 }
 EXPORT_SYMBOL_GPL(rt2x00mac_bss_info_changed);
 
-int rt2x00mac_conf_tx(struct ieee80211_hw *hw, int queue,
+int rt2x00mac_conf_tx(struct ieee80211_hw *hw, int queue_idx,
 		      const struct ieee80211_tx_queue_params *params)
 {
 	struct rt2x00_dev *rt2x00dev = hw->priv;
-	struct data_ring *ring;
+	struct data_queue *queue;
 
-	ring = rt2x00lib_get_ring(rt2x00dev, queue);
-	if (unlikely(!ring))
+	queue = rt2x00queue_get_queue(rt2x00dev, queue_idx);
+	if (unlikely(!queue))
 		return -EINVAL;
 
 	/*
@@ -395,24 +397,23 @@ int rt2x00mac_conf_tx(struct ieee80211_hw *hw, int queue,
 	 * Ralink registers require to know the bit number 'n'.
 	 */
 	if (params->cw_min)
-		ring->tx_params.cw_min = fls(params->cw_min);
+		queue->cw_min = fls(params->cw_min);
 	else
-		ring->tx_params.cw_min = 5; /* cw_min: 2^5 = 32. */
+		queue->cw_min = 5; /* cw_min: 2^5 = 32. */
 
 	if (params->cw_max)
-		ring->tx_params.cw_max = fls(params->cw_max);
+		queue->cw_max = fls(params->cw_max);
 	else
-		ring->tx_params.cw_max = 10; /* cw_min: 2^10 = 1024. */
+		queue->cw_max = 10; /* cw_min: 2^10 = 1024. */
 
 	if (params->aifs)
-		ring->tx_params.aifs = params->aifs;
+		queue->aifs = params->aifs;
 	else
-		ring->tx_params.aifs = 2;
+		queue->aifs = 2;
 
 	INFO(rt2x00dev,
-	     "Configured TX ring %d - CWmin: %d, CWmax: %d, Aifs: %d.\n",
-	     queue, ring->tx_params.cw_min, ring->tx_params.cw_max,
-	     ring->tx_params.aifs);
+	     "Configured TX queue %d - CWmin: %d, CWmax: %d, Aifs: %d.\n",
+	     queue_idx, queue->cw_min, queue->cw_max, queue->aifs);
 
 	return 0;
 }

drivers/net/wireless/rt2x00/rt2x00pci.c

@@ -38,9 +38,10 @@ int rt2x00pci_beacon_update(struct ieee80211_hw *hw, struct sk_buff *skb,
 			    struct ieee80211_tx_control *control)
 {
 	struct rt2x00_dev *rt2x00dev = hw->priv;
-	struct skb_desc *desc;
-	struct data_ring *ring;
-	struct data_entry *entry;
+	struct queue_entry_priv_pci_tx *priv_tx;
+	struct skb_frame_desc *skbdesc;
+	struct data_queue *queue;
+	struct queue_entry *entry;
 
 	/*
 	 * Just in case mac80211 doesn't set this correctly,
@@ -48,21 +49,22 @@ int rt2x00pci_beacon_update(struct ieee80211_hw *hw, struct sk_buff *skb,
 	 * initialization.
 	 */
 	control->queue = IEEE80211_TX_QUEUE_BEACON;
-	ring = rt2x00lib_get_ring(rt2x00dev, control->queue);
-	entry = rt2x00_get_data_entry(ring);
+	queue = rt2x00queue_get_queue(rt2x00dev, control->queue);
+	entry = rt2x00queue_get_entry(queue, Q_INDEX);
+	priv_tx = entry->priv_data;
 
 	/*
 	 * Fill in skb descriptor
 	 */
-	desc = get_skb_desc(skb);
-	desc->desc_len = ring->desc_size;
-	desc->data_len = skb->len;
-	desc->desc = entry->priv;
-	desc->data = skb->data;
-	desc->ring = ring;
-	desc->entry = entry;
-
-	memcpy(entry->data_addr, skb->data, skb->len);
+	skbdesc = get_skb_frame_desc(skb);
+	memset(skbdesc, 0, sizeof(*skbdesc));
+	skbdesc->data = skb->data;
+	skbdesc->data_len = queue->data_size;
+	skbdesc->desc = priv_tx->desc;
+	skbdesc->desc_len = queue->desc_size;
+	skbdesc->entry = entry;
+
+	memcpy(priv_tx->data, skb->data, skb->len);
 	rt2x00lib_write_tx_desc(rt2x00dev, skb, control);
 
 	/*
@@ -78,18 +80,18 @@ EXPORT_SYMBOL_GPL(rt2x00pci_beacon_update);
  * TX data handlers.
  */
 int rt2x00pci_write_tx_data(struct rt2x00_dev *rt2x00dev,
-			    struct data_ring *ring, struct sk_buff *skb,
+			    struct data_queue *queue, struct sk_buff *skb,
 			    struct ieee80211_tx_control *control)
 {
-	struct data_entry *entry = rt2x00_get_data_entry(ring);
-	__le32 *txd = entry->priv;
-	struct skb_desc *desc;
+	struct queue_entry *entry = rt2x00queue_get_entry(queue, Q_INDEX);
+	struct queue_entry_priv_pci_tx *priv_tx = entry->priv_data;
+	struct skb_frame_desc *skbdesc;
 	u32 word;
 
-	if (rt2x00_ring_full(ring))
+	if (rt2x00queue_full(queue))
 		return -EINVAL;
 
-	rt2x00_desc_read(txd, 0, &word);
+	rt2x00_desc_read(priv_tx->desc, 0, &word);
 
 	if (rt2x00_get_field32(word, TXD_ENTRY_OWNER_NIC) ||
 	    rt2x00_get_field32(word, TXD_ENTRY_VALID)) {
@@ -103,18 +105,18 @@ int rt2x00pci_write_tx_data(struct rt2x00_dev *rt2x00dev,
 	/*
 	 * Fill in skb descriptor
 	 */
-	desc = get_skb_desc(skb);
-	desc->desc_len = ring->desc_size;
-	desc->data_len = skb->len;
-	desc->desc = entry->priv;
-	desc->data = skb->data;
-	desc->ring = ring;
-	desc->entry = entry;
-
-	memcpy(entry->data_addr, skb->data, skb->len);
+	skbdesc = get_skb_frame_desc(skb);
+	memset(skbdesc, 0, sizeof(*skbdesc));
+	skbdesc->data = skb->data;
+	skbdesc->data_len = queue->data_size;
+	skbdesc->desc = priv_tx->desc;
+	skbdesc->desc_len = queue->desc_size;
+	skbdesc->entry = entry;
+
+	memcpy(priv_tx->data, skb->data, skb->len);
 	rt2x00lib_write_tx_desc(rt2x00dev, skb, control);
 
-	rt2x00_ring_index_inc(ring);
+	rt2x00queue_index_inc(queue, Q_INDEX);
 
 	return 0;
 }
@@ -125,29 +127,28 @@ EXPORT_SYMBOL_GPL(rt2x00pci_write_tx_data);
  */
 void rt2x00pci_rxdone(struct rt2x00_dev *rt2x00dev)
 {
-	struct data_ring *ring = rt2x00dev->rx;
-	struct data_entry *entry;
-	struct sk_buff *skb;
+	struct data_queue *queue = rt2x00dev->rx;
+	struct queue_entry *entry;
+	struct queue_entry_priv_pci_rx *priv_rx;
 	struct ieee80211_hdr *hdr;
-	struct skb_desc *skbdesc;
-	struct rxdata_entry_desc desc;
+	struct skb_frame_desc *skbdesc;
+	struct rxdone_entry_desc rxdesc;
 	int header_size;
-	__le32 *rxd;
 	int align;
 	u32 word;
 
 	while (1) {
-		entry = rt2x00_get_data_entry(ring);
-		rxd = entry->priv;
-		rt2x00_desc_read(rxd, 0, &word);
+		entry = rt2x00queue_get_entry(queue, Q_INDEX);
+		priv_rx = entry->priv_data;
+		rt2x00_desc_read(priv_rx->desc, 0, &word);
 
 		if (rt2x00_get_field32(word, RXD_ENTRY_OWNER_NIC))
 			break;
 
-		memset(&desc, 0, sizeof(desc));
-		rt2x00dev->ops->lib->fill_rxdone(entry, &desc);
+		memset(&rxdesc, 0, sizeof(rxdesc));
+		rt2x00dev->ops->lib->fill_rxdone(entry, &rxdesc);
 
-		hdr = (struct ieee80211_hdr *)entry->data_addr;
+		hdr = (struct ieee80211_hdr *)priv_rx->data;
 		header_size =
 		    ieee80211_get_hdrlen(le16_to_cpu(hdr->frame_control));
 
@@ -161,66 +162,68 @@ void rt2x00pci_rxdone(struct rt2x00_dev *rt2x00dev)
 		 * Allocate the sk_buffer, initialize it and copy
 		 * all data into it.
 		 */
-		skb = dev_alloc_skb(desc.size + align);
-		if (!skb)
+		entry->skb = dev_alloc_skb(rxdesc.size + align);
+		if (!entry->skb)
 			return;
 
-		skb_reserve(skb, align);
-		memcpy(skb_put(skb, desc.size), entry->data_addr, desc.size);
+		skb_reserve(entry->skb, align);
+		memcpy(skb_put(entry->skb, rxdesc.size),
+		       priv_rx->data, rxdesc.size);
 
 		/*
 		 * Fill in skb descriptor
 		 */
-		skbdesc = get_skb_desc(skb);
-		skbdesc->desc_len = entry->ring->desc_size;
-		skbdesc->data_len = skb->len;
-		skbdesc->desc = entry->priv;
-		skbdesc->data = skb->data;
-		skbdesc->ring = ring;
+		skbdesc = get_skb_frame_desc(entry->skb);
+		memset(skbdesc, 0, sizeof(*skbdesc));
+		skbdesc->data = entry->skb->data;
+		skbdesc->data_len = queue->data_size;
+		skbdesc->desc = priv_rx->desc;
+		skbdesc->desc_len = queue->desc_size;
 		skbdesc->entry = entry;
 
 		/*
 		 * Send the frame to rt2x00lib for further processing.
 		 */
-		rt2x00lib_rxdone(entry, skb, &desc);
+		rt2x00lib_rxdone(entry, &rxdesc);
 
-		if (test_bit(DEVICE_ENABLED_RADIO, &ring->rt2x00dev->flags)) {
+		if (test_bit(DEVICE_ENABLED_RADIO, &queue->rt2x00dev->flags)) {
 			rt2x00_set_field32(&word, RXD_ENTRY_OWNER_NIC, 1);
-			rt2x00_desc_write(rxd, 0, word);
+			rt2x00_desc_write(priv_rx->desc, 0, word);
 		}
 
-		rt2x00_ring_index_inc(ring);
+		rt2x00queue_index_inc(queue, Q_INDEX);
 	}
 }
 EXPORT_SYMBOL_GPL(rt2x00pci_rxdone);
 
-void rt2x00pci_txdone(struct rt2x00_dev *rt2x00dev, struct data_entry *entry,
-		      const int tx_status, const int retry)
+void rt2x00pci_txdone(struct rt2x00_dev *rt2x00dev, struct queue_entry *entry,
+		      struct txdone_entry_desc *txdesc)
 {
+	struct queue_entry_priv_pci_tx *priv_tx = entry->priv_data;
 	u32 word;
 
-	rt2x00lib_txdone(entry, tx_status, retry);
+	txdesc->control = &priv_tx->control;
+	rt2x00lib_txdone(entry, txdesc);
 
 	/*
 	 * Make this entry available for reuse.
 	 */
 	entry->flags = 0;
 
-	rt2x00_desc_read(entry->priv, 0, &word);
+	rt2x00_desc_read(priv_tx->desc, 0, &word);
 	rt2x00_set_field32(&word, TXD_ENTRY_OWNER_NIC, 0);
 	rt2x00_set_field32(&word, TXD_ENTRY_VALID, 0);
-	rt2x00_desc_write(entry->priv, 0, word);
+	rt2x00_desc_write(priv_tx->desc, 0, word);
 
-	rt2x00_ring_index_done_inc(entry->ring);
+	rt2x00queue_index_inc(entry->queue, Q_INDEX_DONE);
 
 	/*
-	 * If the data ring was full before the txdone handler
+	 * If the data queue was full before the txdone handler
 	 * we must make sure the packet queue in the mac80211 stack
 	 * is reenabled when the txdone handler has finished.
 	 */
-	if (!rt2x00_ring_full(entry->ring))
-		ieee80211_wake_queue(rt2x00dev->hw,
-				     entry->tx_status.control.queue);
+	if (!rt2x00queue_full(entry->queue))
+		ieee80211_wake_queue(rt2x00dev->hw, priv_tx->control.queue);
 
 }
 EXPORT_SYMBOL_GPL(rt2x00pci_txdone);
@@ -228,73 +231,83 @@ EXPORT_SYMBOL_GPL(rt2x00pci_txdone);
 /*
  * Device initialization handlers.
  */
-#define priv_offset(__ring, __i)				\
-({								\
-	ring->data_addr + (i * ring->desc_size);		\
+#define dma_size(__queue)				\
+({							\
+	(__queue)->limit *				\
+	    ((__queue)->desc_size + (__queue)->data_size);\
 })
 
-#define data_addr_offset(__ring, __i)				\
-({								\
-	(__ring)->data_addr +					\
-	    ((__ring)->stats.limit * (__ring)->desc_size) +	\
-	    ((__i) * (__ring)->data_size);			\
+#define priv_offset(__queue, __base, __i)		\
+({							\
+	(__base) + ((__i) * (__queue)->desc_size);	\
 })
 
-#define data_dma_offset(__ring, __i)				\
-({								\
-	(__ring)->data_dma +					\
-	    ((__ring)->stats.limit * (__ring)->desc_size) +	\
-	    ((__i) * (__ring)->data_size);			\
+#define data_addr_offset(__queue, __base, __i)		\
+({							\
+	(__base) +					\
+	    ((__queue)->limit * (__queue)->desc_size) +	\
+	    ((__i) * (__queue)->data_size);		\
 })
 
-static int rt2x00pci_alloc_dma(struct rt2x00_dev *rt2x00dev,
-			       struct data_ring *ring)
+#define data_dma_offset(__queue, __base, __i)		\
+({							\
+	(__base) +					\
+	    ((__queue)->limit * (__queue)->desc_size) +	\
+	    ((__i) * (__queue)->data_size);		\
+})
+
+static int rt2x00pci_alloc_queue_dma(struct rt2x00_dev *rt2x00dev,
+				     struct data_queue *queue)
 {
+	struct pci_dev *pci_dev = rt2x00dev_pci(rt2x00dev);
+	struct queue_entry_priv_pci_tx *priv_tx;
+	void *data_addr;
+	dma_addr_t data_dma;
 	unsigned int i;
 
 	/*
 	 * Allocate DMA memory for descriptor and buffer.
 	 */
-	ring->data_addr = pci_alloc_consistent(rt2x00dev_pci(rt2x00dev),
-					       rt2x00_get_ring_size(ring),
-					       &ring->data_dma);
-	if (!ring->data_addr)
+	data_addr = pci_alloc_consistent(pci_dev, dma_size(queue), &data_dma);
+	if (!data_addr)
 		return -ENOMEM;
 
 	/*
-	 * Initialize all ring entries to contain valid
-	 * addresses.
+	 * Initialize all queue entries to contain valid addresses.
 	 */
-	for (i = 0; i < ring->stats.limit; i++) {
-		ring->entry[i].priv = priv_offset(ring, i);
-		ring->entry[i].data_addr = data_addr_offset(ring, i);
-		ring->entry[i].data_dma = data_dma_offset(ring, i);
+	for (i = 0; i < queue->limit; i++) {
+		priv_tx = queue->entries[i].priv_data;
+		priv_tx->desc = priv_offset(queue, data_addr, i);
+		priv_tx->data = data_addr_offset(queue, data_addr, i);
+		priv_tx->dma = data_dma_offset(queue, data_dma, i);
 	}
 
 	return 0;
 }
 
-static void rt2x00pci_free_dma(struct rt2x00_dev *rt2x00dev,
-			       struct data_ring *ring)
+static void rt2x00pci_free_queue_dma(struct rt2x00_dev *rt2x00dev,
+				     struct data_queue *queue)
 {
-	if (ring->data_addr)
-		pci_free_consistent(rt2x00dev_pci(rt2x00dev),
-				    rt2x00_get_ring_size(ring),
-				    ring->data_addr, ring->data_dma);
-	ring->data_addr = NULL;
+	struct pci_dev *pci_dev = rt2x00dev_pci(rt2x00dev);
+	struct queue_entry_priv_pci_tx *priv_tx = queue->entries[0].priv_data;
+
+	if (priv_tx->data)
+		pci_free_consistent(pci_dev, dma_size(queue),
+				    priv_tx->data, priv_tx->dma);
+	priv_tx->data = NULL;
 }
 
 int rt2x00pci_initialize(struct rt2x00_dev *rt2x00dev)
 {
 	struct pci_dev *pci_dev = rt2x00dev_pci(rt2x00dev);
-	struct data_ring *ring;
+	struct data_queue *queue;
 	int status;
 
 	/*
 	 * Allocate DMA
 	 */
-	ring_for_each(rt2x00dev, ring) {
-		status = rt2x00pci_alloc_dma(rt2x00dev, ring);
+	queue_for_each(rt2x00dev, queue) {
+		status = rt2x00pci_alloc_queue_dma(rt2x00dev, queue);
 		if (status)
 			goto exit;
 	}
@@ -321,7 +334,7 @@ EXPORT_SYMBOL_GPL(rt2x00pci_initialize);
 
 void rt2x00pci_uninitialize(struct rt2x00_dev *rt2x00dev)
 {
-	struct data_ring *ring;
+	struct data_queue *queue;
 
 	/*
 	 * Free irq line.
@@ -331,8 +344,8 @@ void rt2x00pci_uninitialize(struct rt2x00_dev *rt2x00dev)
 	/*
 	 * Free DMA
 	 */
-	ring_for_each(rt2x00dev, ring)
-		rt2x00pci_free_dma(rt2x00dev, ring);
+	queue_for_each(rt2x00dev, queue)
+		rt2x00pci_free_queue_dma(rt2x00dev, queue);
 }
 EXPORT_SYMBOL_GPL(rt2x00pci_uninitialize);
 
@@ -530,5 +543,5 @@ EXPORT_SYMBOL_GPL(rt2x00pci_resume);
  */
 MODULE_AUTHOR(DRV_PROJECT);
 MODULE_VERSION(DRV_VERSION);
-MODULE_DESCRIPTION("rt2x00 library");
+MODULE_DESCRIPTION("rt2x00 pci library");
 MODULE_LICENSE("GPL");

drivers/net/wireless/rt2x00/rt2x00pci.h

@@ -97,15 +97,54 @@ int rt2x00pci_beacon_update(struct ieee80211_hw *hw, struct sk_buff *skb,
  * TX data handlers.
  */
 int rt2x00pci_write_tx_data(struct rt2x00_dev *rt2x00dev,
-			    struct data_ring *ring, struct sk_buff *skb,
+			    struct data_queue *queue, struct sk_buff *skb,
 			    struct ieee80211_tx_control *control);
 
-/*
- * RX/TX data handlers.
+/**
+ * struct queue_entry_priv_pci_rx: Per RX entry PCI specific information
+ *
+ * @desc: Pointer to device descriptor.
+ * @data: Pointer to device's entry memory.
+ * @dma: DMA pointer to &data.
+ */
+struct queue_entry_priv_pci_rx {
+	__le32 *desc;
+
+	void *data;
+	dma_addr_t dma;
+};
+
+/**
+ * struct queue_entry_priv_pci_tx: Per TX entry PCI specific information
+ *
+ * @desc: Pointer to device descriptor
+ * @data: Pointer to device's entry memory.
+ * @dma: DMA pointer to &data.
+ * @control: mac80211 control structure used to transmit data.
+ */
+struct queue_entry_priv_pci_tx {
+	__le32 *desc;
+
+	void *data;
+	dma_addr_t dma;
+
+	struct ieee80211_tx_control control;
+};
+
+/**
+ * rt2x00pci_rxdone - Handle RX done events
+ * @rt2x00dev: Device pointer, see &struct rt2x00_dev.
  */
 void rt2x00pci_rxdone(struct rt2x00_dev *rt2x00dev);
-void rt2x00pci_txdone(struct rt2x00_dev *rt2x00dev, struct data_entry *entry,
-		      const int tx_status, const int retry);
+
+/**
+ * rt2x00pci_txdone - Handle TX done events
+ * @rt2x00dev: Device pointer, see &struct rt2x00_dev.
+ * @entry: Entry which has completed the transmission of a frame.
+ * @desc: TX done descriptor
+ */
+void rt2x00pci_txdone(struct rt2x00_dev *rt2x00dev, struct queue_entry *entry,
+		      struct txdone_entry_desc *desc);
 
 /*
  * Device initialization handlers.

drivers/net/wireless/rt2x00/rt2x00queue.c

@@ -0,0 +1,291 @@
+/*
+	Copyright (C) 2004 - 2008 rt2x00 SourceForge Project
+	<http://rt2x00.serialmonkey.com>
+
+	This program is free software; you can redistribute it and/or modify
+	it under the terms of the GNU General Public License as published by
+	the Free Software Foundation; either version 2 of the License, or
+	(at your option) any later version.
+
+	This program is distributed in the hope that it will be useful,
+	but WITHOUT ANY WARRANTY; without even the implied warranty of
+	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+	GNU General Public License for more details.
+
+	You should have received a copy of the GNU General Public License
+	along with this program; if not, write to the
+	Free Software Foundation, Inc.,
+	59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ */
+
+/*
+	Module: rt2x00lib
+	Abstract: rt2x00 queue specific routines.
+ */
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+
+#include "rt2x00.h"
+#include "rt2x00lib.h"
+
+struct data_queue *rt2x00queue_get_queue(struct rt2x00_dev *rt2x00dev,
+					 const enum ieee80211_tx_queue queue)
+{
+	int atim = test_bit(DRIVER_REQUIRE_ATIM_QUEUE, &rt2x00dev->flags);
+
+	if (queue < rt2x00dev->hw->queues && rt2x00dev->tx)
+		return &rt2x00dev->tx[queue];
+
+	if (!rt2x00dev->bcn)
+		return NULL;
+
+	if (queue == IEEE80211_TX_QUEUE_BEACON)
+		return &rt2x00dev->bcn[0];
+	else if (queue == IEEE80211_TX_QUEUE_AFTER_BEACON && atim)
+		return &rt2x00dev->bcn[1];
+
+	return NULL;
+}
+EXPORT_SYMBOL_GPL(rt2x00queue_get_queue);
+
+struct queue_entry *rt2x00queue_get_entry(struct data_queue *queue,
+					  enum queue_index index)
+{
+	struct queue_entry *entry;
+
+	if (unlikely(index >= Q_INDEX_MAX)) {
+		ERROR(queue->rt2x00dev,
+		      "Entry requested from invalid index type (%d)\n", index);
+		return NULL;
+	}
+
+	spin_lock(&queue->lock);
+
+	entry = &queue->entries[queue->index[index]];
+
+	spin_unlock(&queue->lock);
+
+	return entry;
+}
+EXPORT_SYMBOL_GPL(rt2x00queue_get_entry);
+
+void rt2x00queue_index_inc(struct data_queue *queue, enum queue_index index)
+{
+	if (unlikely(index >= Q_INDEX_MAX)) {
+		ERROR(queue->rt2x00dev,
+		      "Index change on invalid index type (%d)\n", index);
+		return;
+	}
+
+	spin_lock(&queue->lock);
+
+	queue->index[index]++;
+	if (queue->index[index] >= queue->limit)
+		queue->index[index] = 0;
+
+	queue->length--;
+	queue->count += (index == Q_INDEX_DONE);
+
+	spin_unlock(&queue->lock);
+}
+EXPORT_SYMBOL_GPL(rt2x00queue_index_inc);
+
+static void rt2x00queue_reset(struct data_queue *queue)
+{
+	spin_lock(&queue->lock);
+
+	queue->count = 0;
+	queue->length = 0;
+	memset(queue->index, 0, sizeof(queue->index));
+
+	spin_unlock(&queue->lock);
+}
+
+void rt2x00queue_init_rx(struct rt2x00_dev *rt2x00dev)
+{
+	struct data_queue *queue = rt2x00dev->rx;
+	unsigned int i;
+
+	rt2x00queue_reset(queue);
+
+	if (!rt2x00dev->ops->lib->init_rxentry)
+		return;
+
+	for (i = 0; i < queue->limit; i++)
+		rt2x00dev->ops->lib->init_rxentry(rt2x00dev,
+						  &queue->entries[i]);
+}
+
+void rt2x00queue_init_tx(struct rt2x00_dev *rt2x00dev)
+{
+	struct data_queue *queue;
+	unsigned int i;
+
+	txall_queue_for_each(rt2x00dev, queue) {
+		rt2x00queue_reset(queue);
+
+		if (!rt2x00dev->ops->lib->init_txentry)
+			continue;
+
+		for (i = 0; i < queue->limit; i++)
+			rt2x00dev->ops->lib->init_txentry(rt2x00dev,
+							  &queue->entries[i]);
+	}
+}
+
+static int rt2x00queue_alloc_entries(struct data_queue *queue,
+				     const struct data_queue_desc *qdesc)
+{
+	struct queue_entry *entries;
+	unsigned int entry_size;
+	unsigned int i;
+
+	rt2x00queue_reset(queue);
+
+	queue->limit = qdesc->entry_num;
+	queue->data_size = qdesc->data_size;
+	queue->desc_size = qdesc->desc_size;
+
+	/*
+	 * Allocate all queue entries.
+	 */
+	entry_size = sizeof(*entries) + qdesc->priv_size;
+	entries = kzalloc(queue->limit * entry_size, GFP_KERNEL);
+	if (!entries)
+		return -ENOMEM;
+
+#define QUEUE_ENTRY_PRIV_OFFSET(__base, __index, __limit, __esize, __psize) \
+	( (__base) + ((__limit) * (__esize)) + ((__index) * (__psize)) )
+
+	for (i = 0; i < queue->limit; i++) {
+		entries[i].flags = 0;
+		entries[i].queue = queue;
+		entries[i].skb = NULL;
+		entries[i].entry_idx = i;
+		entries[i].priv_data =
+		    QUEUE_ENTRY_PRIV_OFFSET(entries, i, queue->limit,
+					    sizeof(*entries), qdesc->priv_size);
+	}
+
+#undef QUEUE_ENTRY_PRIV_OFFSET
+
+	queue->entries = entries;
+
+	return 0;
+}
+
+int rt2x00queue_initialize(struct rt2x00_dev *rt2x00dev)
+{
+	struct data_queue *queue;
+	int status;
+
+
+	status = rt2x00queue_alloc_entries(rt2x00dev->rx, rt2x00dev->ops->rx);
+	if (status)
+		goto exit;
+
+	tx_queue_for_each(rt2x00dev, queue) {
+		status = rt2x00queue_alloc_entries(queue, rt2x00dev->ops->tx);
+		if (status)
+			goto exit;
+	}
+
+	status = rt2x00queue_alloc_entries(rt2x00dev->bcn, rt2x00dev->ops->bcn);
+	if (status)
+		goto exit;
+
+	if (!test_bit(DRIVER_REQUIRE_ATIM_QUEUE, &rt2x00dev->flags))
+		return 0;
+
+	status = rt2x00queue_alloc_entries(&rt2x00dev->bcn[1],
+					   rt2x00dev->ops->atim);
+	if (status)
+		goto exit;
+
+	return 0;
+
+exit:
+	ERROR(rt2x00dev, "Queue entries allocation failed.\n");
+
+	rt2x00queue_uninitialize(rt2x00dev);
+
+	return status;
+}
+
+void rt2x00queue_uninitialize(struct rt2x00_dev *rt2x00dev)
+{
+	struct data_queue *queue;
+
+	queue_for_each(rt2x00dev, queue) {
+		kfree(queue->entries);
+		queue->entries = NULL;
+	}
+}
+
+int rt2x00queue_allocate(struct rt2x00_dev *rt2x00dev)
+{
+	struct data_queue *queue;
+	enum data_queue_qid qid;
+	unsigned int req_atim =
+	    !!test_bit(DRIVER_REQUIRE_ATIM_QUEUE, &rt2x00dev->flags);
+
+	/*
+	 * We need the following queues:
+	 * RX: 1
+	 * TX: hw->queues
+	 * Beacon: 1
+	 * Atim: 1 (if required)
+	 */
+	rt2x00dev->data_queues = 2 + rt2x00dev->hw->queues + req_atim;
+
+	queue = kzalloc(rt2x00dev->data_queues * sizeof(*queue), GFP_KERNEL);
+	if (!queue) {
+		ERROR(rt2x00dev, "Queue allocation failed.\n");
+		return -ENOMEM;
+	}
+
+	/*
+	 * Initialize pointers
+	 */
+	rt2x00dev->rx = queue;
+	rt2x00dev->tx = &queue[1];
+	rt2x00dev->bcn = &queue[1 + rt2x00dev->hw->queues];
+
+	/*
+	 * Initialize queue parameters.
+	 * RX: qid = QID_RX
+	 * TX: qid = QID_AC_BE + index
+	 * TX: cw_min: 2^5 = 32.
+	 * TX: cw_max: 2^10 = 1024.
+	 * BCN & Atim: qid = QID_MGMT
+	 */
+	qid = QID_AC_BE;
+	queue_for_each(rt2x00dev, queue) {
+		spin_lock_init(&queue->lock);
+
+		queue->rt2x00dev = rt2x00dev;
+		queue->qid = qid++;
+		queue->aifs = 2;
+		queue->cw_min = 5;
+		queue->cw_max = 10;
+	}
+
+	/*
+	 * Fix non-TX data qid's
+	 */
+	rt2x00dev->rx->qid = QID_RX;
+	rt2x00dev->bcn[0].qid = QID_MGMT;
+	if (req_atim)
+		rt2x00dev->bcn[1].qid = QID_MGMT;
+
+	return 0;
+}
+
+void rt2x00queue_free(struct rt2x00_dev *rt2x00dev)
+{
+	kfree(rt2x00dev->rx);
+	rt2x00dev->rx = NULL;
+	rt2x00dev->tx = NULL;
+	rt2x00dev->bcn = NULL;
+}

drivers/net/wireless/rt2x00/rt2x00queue.h

@@ -0,0 +1,435 @@
+/*
+	Copyright (C) 2004 - 2008 rt2x00 SourceForge Project
+	<http://rt2x00.serialmonkey.com>
+
+	This program is free software; you can redistribute it and/or modify
+	it under the terms of the GNU General Public License as published by
+	the Free Software Foundation; either version 2 of the License, or
+	(at your option) any later version.
+
+	This program is distributed in the hope that it will be useful,
+	but WITHOUT ANY WARRANTY; without even the implied warranty of
+	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+	GNU General Public License for more details.
+
+	You should have received a copy of the GNU General Public License
+	along with this program; if not, write to the
+	Free Software Foundation, Inc.,
+	59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ */
+
+/*
+	Module: rt2x00
+	Abstract: rt2x00 queue datastructures and routines
+ */
+
+#ifndef RT2X00QUEUE_H
+#define RT2X00QUEUE_H
+
+#include <linux/prefetch.h>
+
+/**
+ * DOC: Entrie frame size
+ *
+ * Ralink PCI devices demand the Frame size to be a multiple of 128 bytes,
+ * for USB devices this restriction does not apply, but the value of
+ * 2432 makes sense since it is big enough to contain the maximum fragment
+ * size according to the ieee802.11 specs.
+ */
+#define DATA_FRAME_SIZE	2432
+#define MGMT_FRAME_SIZE	256
+
+/**
+ * DOC: Number of entries per queue
+ *
+ * After research it was concluded that 12 entries in a RX and TX
+ * queue would be sufficient. Although this is almost one third of
+ * the amount the legacy driver allocated, the queues aren't getting
+ * filled to the maximum even when working with the maximum rate.
+ *
+ * FIXME: For virtual interfaces we need a different number
+ * of beacons, since more interfaces require more beacons.
+ */
+#define RX_ENTRIES	12
+#define TX_ENTRIES	12
+#define BEACON_ENTRIES	1
+#define ATIM_ENTRIES	1
+
+/**
+ * enum data_queue_qid: Queue identification
+ */
+enum data_queue_qid {
+	QID_AC_BE = 0,
+	QID_AC_BK = 1,
+	QID_AC_VI = 2,
+	QID_AC_VO = 3,
+	QID_HCCA = 4,
+	QID_MGMT = 13,
+	QID_RX = 14,
+	QID_OTHER = 15,
+};
+
+/**
+ * struct skb_frame_desc: Descriptor information for the skb buffer
+ *
+ * This structure is placed over the skb->cb array, this means that
+ * this structure should not exceed the size of that array (48 bytes).
+ *
+ * @flags: Frame flags.
+ * @frame_type: Frame type, see &enum rt2x00_dump_type.
+ * @data: Pointer to data part of frame (Start of ieee80211 header).
+ * @desc: Pointer to descriptor part of the frame.
+ *	Note that this pointer could point to something outside
+ *	of the scope of the skb->data pointer.
+ * @data_len: Length of the frame data.
+ * @desc_len: Length of the frame descriptor.
+
+ * @entry: The entry to which this sk buffer belongs.
+ */
+struct skb_frame_desc {
+	unsigned int flags;
+
+	unsigned int frame_type;
+
+	void *data;
+	void *desc;
+
+	unsigned int data_len;
+	unsigned int desc_len;
+
+	struct queue_entry *entry;
+};
+
+static inline struct skb_frame_desc* get_skb_frame_desc(struct sk_buff *skb)
+{
+	BUILD_BUG_ON(sizeof(struct skb_frame_desc) > sizeof(skb->cb));
+	return (struct skb_frame_desc *)&skb->cb[0];
+}
+
+/**
+ * struct rxdone_entry_desc: RX Entry descriptor
+ *
+ * Summary of information that has been read from the RX frame descriptor.
+ *
+ * @signal: Signal of the received frame.
+ * @rssi: RSSI of the received frame.
+ * @ofdm: Was frame send with an OFDM rate.
+ * @size: Data size of the received frame.
+ * @flags: MAC80211 receive flags (See &enum mac80211_rx_flags).
+ * @my_bss: Does this frame originate from device's BSS.
+ */
+struct rxdone_entry_desc {
+	int signal;
+	int rssi;
+	int ofdm;
+	int size;
+	int flags;
+	int my_bss;
+};
+
+/**
+ * struct txdone_entry_desc: TX done entry descriptor
+ *
+ * Summary of information that has been read from the TX frame descriptor
+ * after the device is done with transmission.
+ *
+ * @control: Control structure which was used to transmit the frame.
+ * @status: TX status (See &enum tx_status).
+ * @retry: Retry count.
+ */
+struct txdone_entry_desc {
+	struct ieee80211_tx_control *control;
+	int status;
+	int retry;
+};
+
+/**
+ * enum txentry_desc_flags: Status flags for TX entry descriptor
+ *
+ * @ENTRY_TXD_RTS_FRAME: This frame is a RTS frame.
+ * @ENTRY_TXD_OFDM_RATE: This frame is send out with an OFDM rate.
+ * @ENTRY_TXD_MORE_FRAG: This frame is followed by another fragment.
+ * @ENTRY_TXD_REQ_TIMESTAMP: Require timestamp to be inserted.
+ * @ENTRY_TXD_BURST: This frame belongs to the same burst event.
+ * @ENTRY_TXD_ACK: An ACK is required for this frame.
+ */
+enum txentry_desc_flags {
+	ENTRY_TXD_RTS_FRAME,
+	ENTRY_TXD_OFDM_RATE,
+	ENTRY_TXD_MORE_FRAG,
+	ENTRY_TXD_REQ_TIMESTAMP,
+	ENTRY_TXD_BURST,
+	ENTRY_TXD_ACK,
+};
+
+/**
+ * struct txentry_desc: TX Entry descriptor
+ *
+ * Summary of information for the frame descriptor before sending a TX frame.
+ *
+ * @flags: Descriptor flags (See &enum queue_entry_flags).
+ * @queue: Queue identification (See &enum data_queue_qid).
+ * @length_high: PLCP length high word.
+ * @length_low: PLCP length low word.
+ * @signal: PLCP signal.
+ * @service: PLCP service.
+ * @aifs: AIFS value.
+ * @ifs: IFS value.
+ * @cw_min: cwmin value.
+ * @cw_max: cwmax value.
+ */
+struct txentry_desc {
+	unsigned long flags;
+
+	enum data_queue_qid queue;
+
+	u16 length_high;
+	u16 length_low;
+	u16 signal;
+	u16 service;
+
+	int aifs;
+	int ifs;
+	int cw_min;
+	int cw_max;
+};
+
+/**
+ * enum queue_entry_flags: Status flags for queue entry
+ *
+ * @ENTRY_BCN_ASSIGNED: This entry has been assigned to an interface.
+ *	As long as this bit is set, this entry may only be touched
+ *	through the interface structure.
+ * @ENTRY_OWNER_DEVICE_DATA: This entry is owned by the device for data
+ *	transfer (either TX or RX depending on the queue). The entry should
+ *	only be touched after the device has signaled it is done with it.
+ * @ENTRY_OWNER_DEVICE_CRYPTO: This entry is owned by the device for data
+ *	encryption or decryption. The entry should only be touched after
+ *	the device has signaled it is done with it.
+ */
+
+enum queue_entry_flags {
+	ENTRY_BCN_ASSIGNED,
+	ENTRY_OWNER_DEVICE_DATA,
+	ENTRY_OWNER_DEVICE_CRYPTO,
+};
+
+/**
+ * struct queue_entry: Entry inside the &struct data_queue
+ *
+ * @flags: Entry flags, see &enum queue_entry_flags.
+ * @queue: The data queue (&struct data_queue) to which this entry belongs.
+ * @skb: The buffer which is currently being transmitted (for TX queue),
+ *	or used to directly recieve data in (for RX queue).
+ * @entry_idx: The entry index number.
+ * @priv_data: Private data belonging to this queue entry. The pointer
+ *	points to data specific to a particular driver and queue type.
+ */
+struct queue_entry {
+	unsigned long flags;
+
+	struct data_queue *queue;
+
+	struct sk_buff *skb;
+
+	unsigned int entry_idx;
+
+	void *priv_data;
+};
+
+/**
+ * enum queue_index: Queue index type
+ *
+ * @Q_INDEX: Index pointer to the current entry in the queue, if this entry is
+ *	owned by the hardware then the queue is considered to be full.
+ * @Q_INDEX_DONE: Index pointer to the next entry which will be completed by
+ *	the hardware and for which we need to run the txdone handler. If this
+ *	entry is not owned by the hardware the queue is considered to be empty.
+ * @Q_INDEX_CRYPTO: Index pointer to the next entry which encryption/decription
+ *	will be completed by the hardware next.
+ * @Q_INDEX_MAX: Keep last, used in &struct data_queue to determine the size
+ *	of the index array.
+ */
+enum queue_index {
+	Q_INDEX,
+	Q_INDEX_DONE,
+	Q_INDEX_CRYPTO,
+	Q_INDEX_MAX,
+};
+
+/**
+ * struct data_queue: Data queue
+ *
+ * @rt2x00dev: Pointer to main &struct rt2x00dev where this queue belongs to.
+ * @entries: Base address of the &struct queue_entry which are
+ *	part of this queue.
+ * @qid: The queue identification, see &enum data_queue_qid.
+ * @lock: Spinlock to protect index handling. Whenever @index, @index_done or
+ *	@index_crypt needs to be changed this lock should be grabbed to prevent
+ *	index corruption due to concurrency.
+ * @count: Number of frames handled in the queue.
+ * @limit: Maximum number of entries in the queue.
+ * @length: Number of frames in queue.
+ * @index: Index pointers to entry positions in the queue,
+ *	use &enum queue_index to get a specific index field.
+ * @aifs: The aifs value for outgoing frames (field ignored in RX queue).
+ * @cw_min: The cw min value for outgoing frames (field ignored in RX queue).
+ * @cw_max: The cw max value for outgoing frames (field ignored in RX queue).
+ * @data_size: Maximum data size for the frames in this queue.
+ * @desc_size: Hardware descriptor size for the data in this queue.
+ */
+struct data_queue {
+	struct rt2x00_dev *rt2x00dev;
+	struct queue_entry *entries;
+
+	enum data_queue_qid qid;
+
+	spinlock_t lock;
+	unsigned int count;
+	unsigned short limit;
+	unsigned short length;
+	unsigned short index[Q_INDEX_MAX];
+
+	unsigned short aifs;
+	unsigned short cw_min;
+	unsigned short cw_max;
+
+	unsigned short data_size;
+	unsigned short desc_size;
+};
+
+/**
+ * struct data_queue_desc: Data queue description
+ *
+ * The information in this structure is used by drivers
+ * to inform rt2x00lib about the creation of the data queue.
+ *
+ * @entry_num: Maximum number of entries for a queue.
+ * @data_size: Maximum data size for the frames in this queue.
+ * @desc_size: Hardware descriptor size for the data in this queue.
+ * @priv_size: Size of per-queue_entry private data.
+ */
+struct data_queue_desc {
+	unsigned short entry_num;
+	unsigned short data_size;
+	unsigned short desc_size;
+	unsigned short priv_size;
+};
+
+/**
+ * queue_end - Return pointer to the last queue (HELPER MACRO).
+ * @__dev: Pointer to &struct rt2x00_dev
+ *
+ * Using the base rx pointer and the maximum number of available queues,
+ * this macro will return the address of 1 position beyond  the end of the
+ * queues array.
+ */
+#define queue_end(__dev) \
+	&(__dev)->rx[(__dev)->data_queues]
+
+/**
+ * tx_queue_end - Return pointer to the last TX queue (HELPER MACRO).
+ * @__dev: Pointer to &struct rt2x00_dev
+ *
+ * Using the base tx pointer and the maximum number of available TX
+ * queues, this macro will return the address of 1 position beyond
+ * the end of the TX queue array.
+ */
+#define tx_queue_end(__dev) \
+	&(__dev)->tx[(__dev)->hw->queues]
+
+/**
+ * queue_loop - Loop through the queues within a specific range (HELPER MACRO).
+ * @__entry: Pointer where the current queue entry will be stored in.
+ * @__start: Start queue pointer.
+ * @__end: End queue pointer.
+ *
+ * This macro will loop through all queues between &__start and &__end.
+ */
+#define queue_loop(__entry, __start, __end)			\
+	for ((__entry) = (__start);				\
+	     prefetch(&(__entry)[1]), (__entry) != (__end);	\
+	     (__entry) = &(__entry)[1])
+
+/**
+ * queue_for_each - Loop through all queues
+ * @__dev: Pointer to &struct rt2x00_dev
+ * @__entry: Pointer where the current queue entry will be stored in.
+ *
+ * This macro will loop through all available queues.
+ */
+#define queue_for_each(__dev, __entry) \
+	queue_loop(__entry, (__dev)->rx, queue_end(__dev))
+
+/**
+ * tx_queue_for_each - Loop through the TX queues
+ * @__dev: Pointer to &struct rt2x00_dev
+ * @__entry: Pointer where the current queue entry will be stored in.
+ *
+ * This macro will loop through all TX related queues excluding
+ * the Beacon and Atim queues.
+ */
+#define tx_queue_for_each(__dev, __entry) \
+	queue_loop(__entry, (__dev)->tx, tx_queue_end(__dev))
+
+/**
+ * txall_queue_for_each - Loop through all TX related queues
+ * @__dev: Pointer to &struct rt2x00_dev
+ * @__entry: Pointer where the current queue entry will be stored in.
+ *
+ * This macro will loop through all TX related queues including
+ * the Beacon and Atim queues.
+ */
+#define txall_queue_for_each(__dev, __entry) \
+	queue_loop(__entry, (__dev)->tx, queue_end(__dev))
+
+/**
+ * rt2x00queue_empty - Check if the queue is empty.
+ * @queue: Queue to check if empty.
+ */
+static inline int rt2x00queue_empty(struct data_queue *queue)
+{
+	return queue->length == 0;
+}
+
+/**
+ * rt2x00queue_full - Check if the queue is full.
+ * @queue: Queue to check if full.
+ */
+static inline int rt2x00queue_full(struct data_queue *queue)
+{
+	return queue->length == queue->limit;
+}
+
+/**
+ * rt2x00queue_free - Check the number of available entries in queue.
+ * @queue: Queue to check.
+ */
+static inline int rt2x00queue_available(struct data_queue *queue)
+{
+	return queue->limit - queue->length;
+}
+
+/**
+ * rt2x00_desc_read - Read a word from the hardware descriptor.
+ * @desc: Base descriptor address
+ * @word: Word index from where the descriptor should be read.
+ * @value: Address where the descriptor value should be written into.
+ */
+static inline void rt2x00_desc_read(__le32 *desc, const u8 word, u32 *value)
+{
+	*value = le32_to_cpu(desc[word]);
+}
+
+/**
+ * rt2x00_desc_write - wrote a word to the hardware descriptor.
+ * @desc: Base descriptor address
+ * @word: Word index from where the descriptor should be written.
+ * @value: Value that should be written into the descriptor.
+ */
+static inline void rt2x00_desc_write(__le32 *desc, const u8 word, u32 value)
+{
+	desc[word] = cpu_to_le32(value);
+}
+
+#endif /* RT2X00QUEUE_H */

drivers/net/wireless/rt2x00/rt2x00reg.h

@@ -29,7 +29,7 @@
 /*
  * TX result flags.
  */
-enum TX_STATUS {
+enum tx_status {
 	TX_SUCCESS = 0,
 	TX_SUCCESS_RETRY = 1,
 	TX_FAIL_RETRY = 2,

drivers/net/wireless/rt2x00/rt2x00ring.h

@@ -1,290 +0,0 @@
-/*
-	Copyright (C) 2004 - 2008 rt2x00 SourceForge Project
-	<http://rt2x00.serialmonkey.com>
-
-	This program is free software; you can redistribute it and/or modify
-	it under the terms of the GNU General Public License as published by
-	the Free Software Foundation; either version 2 of the License, or
-	(at your option) any later version.
-
-	This program is distributed in the hope that it will be useful,
-	but WITHOUT ANY WARRANTY; without even the implied warranty of
-	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-	GNU General Public License for more details.
-
-	You should have received a copy of the GNU General Public License
-	along with this program; if not, write to the
-	Free Software Foundation, Inc.,
-	59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
- */
-
-/*
-	Module: rt2x00
-	Abstract: rt2x00 ring datastructures and routines
- */
-
-#ifndef RT2X00RING_H
-#define RT2X00RING_H
-
-/*
- * skb_desc
- * Descriptor information for the skb buffer
- */
-struct skb_desc {
-	unsigned int frame_type;
-
-	unsigned int desc_len;
-	unsigned int data_len;
-
-	void *desc;
-	void *data;
-
-	struct data_ring *ring;
-	struct data_entry *entry;
-};
-
-static inline struct skb_desc* get_skb_desc(struct sk_buff *skb)
-{
-	return (struct skb_desc*)&skb->cb[0];
-}
-
-/*
- * rxdata_entry_desc
- * Summary of information that has been read from the
- * RX frame descriptor.
- */
-struct rxdata_entry_desc {
-	int signal;
-	int rssi;
-	int ofdm;
-	int size;
-	int flags;
-	int my_bss;
-};
-
-/*
- * txdata_entry_desc
- * Summary of information that should be written into the
- * descriptor for sending a TX frame.
- */
-struct txdata_entry_desc {
-	unsigned long flags;
-#define ENTRY_TXDONE		1
-#define ENTRY_TXD_RTS_FRAME	2
-#define ENTRY_TXD_OFDM_RATE	3
-#define ENTRY_TXD_MORE_FRAG	4
-#define ENTRY_TXD_REQ_TIMESTAMP	5
-#define ENTRY_TXD_BURST		6
-#define ENTRY_TXD_ACK		7
-
-/*
- * Queue ID. ID's 0-4 are data TX rings
- */
-	int queue;
-#define QUEUE_MGMT		13
-#define QUEUE_RX		14
-#define QUEUE_OTHER		15
-
-	/*
-	 * PLCP values.
-	 */
-	u16 length_high;
-	u16 length_low;
-	u16 signal;
-	u16 service;
-
-	/*
-	 * Timing information
-	 */
-	int aifs;
-	int ifs;
-	int cw_min;
-	int cw_max;
-};
-
-/*
- * data_entry
- * The data ring is a list of data entries.
- * Each entry holds a reference to the descriptor
- * and the data buffer. For TX rings the reference to the
- * sk_buff of the packet being transmitted is also stored here.
- */
-struct data_entry {
-	/*
-	 * Status flags
-	 */
-	unsigned long flags;
-#define ENTRY_OWNER_NIC		1
-
-	/*
-	 * Ring we belong to.
-	 */
-	struct data_ring *ring;
-
-	/*
-	 * sk_buff for the packet which is being transmitted
-	 * in this entry (Only used with TX related rings).
-	 */
-	struct sk_buff *skb;
-
-	/*
-	 * Store a ieee80211_tx_status structure in each
-	 * ring entry, this will optimize the txdone
-	 * handler.
-	 */
-	struct ieee80211_tx_status tx_status;
-
-	/*
-	 * private pointer specific to driver.
-	 */
-	void *priv;
-
-	/*
-	 * Data address for this entry.
-	 */
-	void *data_addr;
-	dma_addr_t data_dma;
-
-	/*
-	 * Entry identification number (index).
-	 */
-	unsigned int entry_idx;
-};
-
-/*
- * data_ring
- * Data rings are used by the device to send and receive packets.
- * The data_addr is the base address of the data memory.
- * To determine at which point in the ring we are,
- * have to use the rt2x00_ring_index_*() functions.
- */
-struct data_ring {
-	/*
-	 * Pointer to main rt2x00dev structure where this
-	 * ring belongs to.
-	 */
-	struct rt2x00_dev *rt2x00dev;
-
-	/*
-	 * Base address for the device specific data entries.
-	 */
-	struct data_entry *entry;
-
-	/*
-	 * TX queue statistic info.
-	 */
-	struct ieee80211_tx_queue_stats_data stats;
-
-	/*
-	 * TX Queue parameters.
-	 */
-	struct ieee80211_tx_queue_params tx_params;
-
-	/*
-	 * Base address for data ring.
-	 */
-	dma_addr_t data_dma;
-	void *data_addr;
-
-	/*
-	 * Queue identification number:
-	 * RX: 0
-	 * TX: IEEE80211_TX_*
-	 */
-	unsigned int queue_idx;
-
-	/*
-	 * Index variables.
-	 */
-	u16 index;
-	u16 index_done;
-
-	/*
-	 * Size of packet and descriptor in bytes.
-	 */
-	u16 data_size;
-	u16 desc_size;
-};
-
-/*
- * Handlers to determine the address of the current device specific
- * data entry, where either index or index_done points to.
- */
-static inline struct data_entry *rt2x00_get_data_entry(struct data_ring *ring)
-{
-	return &ring->entry[ring->index];
-}
-
-static inline struct data_entry *rt2x00_get_data_entry_done(struct data_ring
-							    *ring)
-{
-	return &ring->entry[ring->index_done];
-}
-
-/*
- * Total ring memory
- */
-static inline int rt2x00_get_ring_size(struct data_ring *ring)
-{
-	return ring->stats.limit * (ring->desc_size + ring->data_size);
-}
-
-/*
- * Ring index manipulation functions.
- */
-static inline void rt2x00_ring_index_inc(struct data_ring *ring)
-{
-	ring->index++;
-	if (ring->index >= ring->stats.limit)
-		ring->index = 0;
-	ring->stats.len++;
-}
-
-static inline void rt2x00_ring_index_done_inc(struct data_ring *ring)
-{
-	ring->index_done++;
-	if (ring->index_done >= ring->stats.limit)
-		ring->index_done = 0;
-	ring->stats.len--;
-	ring->stats.count++;
-}
-
-static inline void rt2x00_ring_index_clear(struct data_ring *ring)
-{
-	ring->index = 0;
-	ring->index_done = 0;
-	ring->stats.len = 0;
-	ring->stats.count = 0;
-}
-
-static inline int rt2x00_ring_empty(struct data_ring *ring)
-{
-	return ring->stats.len == 0;
-}
-
-static inline int rt2x00_ring_full(struct data_ring *ring)
-{
-	return ring->stats.len == ring->stats.limit;
-}
-
-static inline int rt2x00_ring_free(struct data_ring *ring)
-{
-	return ring->stats.limit - ring->stats.len;
-}
-
-/*
- * TX/RX Descriptor access functions.
- */
-static inline void rt2x00_desc_read(__le32 *desc,
-				    const u8 word, u32 *value)
-{
-	*value = le32_to_cpu(desc[word]);
-}
-
-static inline void rt2x00_desc_write(__le32 *desc,
-				     const u8 word, const u32 value)
-{
-	desc[word] = cpu_to_le32(value);
-}
-
-#endif /* RT2X00RING_H */

drivers/net/wireless/rt2x00/rt2x00usb.c

@@ -40,8 +40,7 @@ int rt2x00usb_vendor_request(struct rt2x00_dev *rt2x00dev,
 			     void *buffer, const u16 buffer_length,
 			     const int timeout)
 {
-	struct usb_device *usb_dev =
-	    interface_to_usbdev(rt2x00dev_usb(rt2x00dev));
+	struct usb_device *usb_dev = rt2x00dev_usb_dev(rt2x00dev);
 	int status;
 	unsigned int i;
 	unsigned int pipe =
@@ -128,15 +127,15 @@ EXPORT_SYMBOL_GPL(rt2x00usb_vendor_request_buff);
  */
 static void rt2x00usb_interrupt_txdone(struct urb *urb)
 {
-	struct data_entry *entry = (struct data_entry *)urb->context;
-	struct data_ring *ring = entry->ring;
-	struct rt2x00_dev *rt2x00dev = ring->rt2x00dev;
+	struct queue_entry *entry = (struct queue_entry *)urb->context;
+	struct rt2x00_dev *rt2x00dev = entry->queue->rt2x00dev;
+	struct queue_entry_priv_usb_tx *priv_tx = entry->priv_data;
+	struct txdone_entry_desc txdesc;
 	__le32 *txd = (__le32 *)entry->skb->data;
 	u32 word;
-	int tx_status;
 
 	if (!test_bit(DEVICE_ENABLED_RADIO, &rt2x00dev->flags) ||
-	    !__test_and_clear_bit(ENTRY_OWNER_NIC, &entry->flags))
+	    !__test_and_clear_bit(ENTRY_OWNER_DEVICE_DATA, &entry->flags))
 		return;
 
 	rt2x00_desc_read(txd, 0, &word);
@@ -144,45 +143,46 @@ static void rt2x00usb_interrupt_txdone(struct urb *urb)
 	/*
 	 * Remove the descriptor data from the buffer.
 	 */
-	skb_pull(entry->skb, ring->desc_size);
+	skb_pull(entry->skb, entry->queue->desc_size);
 
 	/*
 	 * Obtain the status about this packet.
 	 */
-	tx_status = !urb->status ? TX_SUCCESS : TX_FAIL_RETRY;
+	txdesc.status = !urb->status ? TX_SUCCESS : TX_FAIL_RETRY;
+	txdesc.retry = 0;
+	txdesc.control = &priv_tx->control;
 
-	rt2x00lib_txdone(entry, tx_status, 0);
+	rt2x00lib_txdone(entry, &txdesc);
 
 	/*
 	 * Make this entry available for reuse.
 	 */
 	entry->flags = 0;
-	rt2x00_ring_index_done_inc(entry->ring);
+	rt2x00queue_index_inc(entry->queue, Q_INDEX_DONE);
 
 	/*
-	 * If the data ring was full before the txdone handler
+	 * If the data queue was full before the txdone handler
 	 * we must make sure the packet queue in the mac80211 stack
 	 * is reenabled when the txdone handler has finished.
 	 */
-	if (!rt2x00_ring_full(ring))
-		ieee80211_wake_queue(rt2x00dev->hw,
-				     entry->tx_status.control.queue);
+	if (!rt2x00queue_full(entry->queue))
+		ieee80211_wake_queue(rt2x00dev->hw, priv_tx->control.queue);
 }
 
 int rt2x00usb_write_tx_data(struct rt2x00_dev *rt2x00dev,
-			    struct data_ring *ring, struct sk_buff *skb,
+			    struct data_queue *queue, struct sk_buff *skb,
 			    struct ieee80211_tx_control *control)
 {
-	struct usb_device *usb_dev =
-	    interface_to_usbdev(rt2x00dev_usb(rt2x00dev));
-	struct data_entry *entry = rt2x00_get_data_entry(ring);
-	struct skb_desc *desc;
+	struct usb_device *usb_dev = rt2x00dev_usb_dev(rt2x00dev);
+	struct queue_entry *entry = rt2x00queue_get_entry(queue, Q_INDEX);
+	struct queue_entry_priv_usb_tx *priv_tx = entry->priv_data;
+	struct skb_frame_desc *skbdesc;
 	u32 length;
 
-	if (rt2x00_ring_full(ring))
+	if (rt2x00queue_full(queue))
 		return -EINVAL;
 
-	if (test_bit(ENTRY_OWNER_NIC, &entry->flags)) {
+	if (test_bit(ENTRY_OWNER_DEVICE_DATA, &entry->flags)) {
 		ERROR(rt2x00dev,
 		      "Arrived at non-free entry in the non-full queue %d.\n"
 		      "Please file bug report to %s.\n",
@@ -193,19 +193,19 @@ int rt2x00usb_write_tx_data(struct rt2x00_dev *rt2x00dev,
 	/*
 	 * Add the descriptor in front of the skb.
 	 */
-	skb_push(skb, ring->desc_size);
-	memset(skb->data, 0, ring->desc_size);
+	skb_push(skb, queue->desc_size);
+	memset(skb->data, 0, queue->desc_size);
 
 	/*
 	 * Fill in skb descriptor
 	 */
-	desc = get_skb_desc(skb);
-	desc->desc_len = ring->desc_size;
-	desc->data_len = skb->len - ring->desc_size;
-	desc->desc = skb->data;
-	desc->data = skb->data + ring->desc_size;
-	desc->ring = ring;
-	desc->entry = entry;
+	skbdesc = get_skb_frame_desc(skb);
+	memset(skbdesc, 0, sizeof(*skbdesc));
+	skbdesc->data = skb->data + queue->desc_size;
+	skbdesc->data_len = queue->data_size;
+	skbdesc->desc = skb->data;
+	skbdesc->desc_len = queue->desc_size;
+	skbdesc->entry = entry;
 
 	rt2x00lib_write_tx_desc(rt2x00dev, skb, control);
 
@@ -219,12 +219,12 @@ int rt2x00usb_write_tx_data(struct rt2x00_dev *rt2x00dev,
 	/*
 	 * Initialize URB and send the frame to the device.
 	 */
-	__set_bit(ENTRY_OWNER_NIC, &entry->flags);
-	usb_fill_bulk_urb(entry->priv, usb_dev, usb_sndbulkpipe(usb_dev, 1),
+	__set_bit(ENTRY_OWNER_DEVICE_DATA, &entry->flags);
+	usb_fill_bulk_urb(priv_tx->urb, usb_dev, usb_sndbulkpipe(usb_dev, 1),
 			  skb->data, length, rt2x00usb_interrupt_txdone, entry);
-	usb_submit_urb(entry->priv, GFP_ATOMIC);
+	usb_submit_urb(priv_tx->urb, GFP_ATOMIC);
 
-	rt2x00_ring_index_inc(ring);
+	rt2x00queue_index_inc(queue, Q_INDEX);
 
 	return 0;
 }
@@ -233,20 +233,41 @@ EXPORT_SYMBOL_GPL(rt2x00usb_write_tx_data);
 /*
  * RX data handlers.
  */
+static struct sk_buff* rt2x00usb_alloc_rxskb(struct data_queue *queue)
+{
+	struct sk_buff *skb;
+	unsigned int frame_size;
+
+	/*
+	 * As alignment we use 2 and not NET_IP_ALIGN because we need
+	 * to be sure we have 2 bytes room in the head. (NET_IP_ALIGN
+	 * can be 0 on some hardware). We use these 2 bytes for frame
+	 * alignment later, we assume that the chance that
+	 * header_size % 4 == 2 is bigger then header_size % 2 == 0
+	 * and thus optimize alignment by reserving the 2 bytes in
+	 * advance.
+	 */
+	frame_size = queue->data_size + queue->desc_size;
+	skb = dev_alloc_skb(frame_size + 2);
+	if (!skb)
+		return NULL;
+
+	skb_reserve(skb, 2);
+	skb_put(skb, frame_size);
+
+	return skb;
+}
+
 static void rt2x00usb_interrupt_rxdone(struct urb *urb)
 {
-	struct data_entry *entry = (struct data_entry *)urb->context;
-	struct data_ring *ring = entry->ring;
-	struct rt2x00_dev *rt2x00dev = ring->rt2x00dev;
+	struct queue_entry *entry = (struct queue_entry *)urb->context;
+	struct rt2x00_dev *rt2x00dev = entry->queue->rt2x00dev;
 	struct sk_buff *skb;
-	struct ieee80211_hdr *hdr;
-	struct skb_desc *skbdesc;
-	struct rxdata_entry_desc desc;
-	int header_size;
-	int frame_size;
+	struct skb_frame_desc *skbdesc;
+	struct rxdone_entry_desc rxdesc;
 
 	if (!test_bit(DEVICE_ENABLED_RADIO, &rt2x00dev->flags) ||
-	    !test_and_clear_bit(ENTRY_OWNER_NIC, &entry->flags))
+	    !test_and_clear_bit(ENTRY_OWNER_DEVICE_DATA, &entry->flags))
 		return;
 
 	/*
@@ -254,67 +275,32 @@ static void rt2x00usb_interrupt_rxdone(struct urb *urb)
 	 * to be actually valid, or if the urb is signaling
 	 * a problem.
 	 */
-	if (urb->actual_length < entry->ring->desc_size || urb->status)
+	if (urb->actual_length < entry->queue->desc_size || urb->status)
 		goto skip_entry;
 
 	/*
 	 * Fill in skb descriptor
 	 */
-	skbdesc = get_skb_desc(entry->skb);
-	skbdesc->ring = ring;
+	skbdesc = get_skb_frame_desc(entry->skb);
+	memset(skbdesc, 0, sizeof(*skbdesc));
 	skbdesc->entry = entry;
 
-	memset(&desc, 0, sizeof(desc));
-	rt2x00dev->ops->lib->fill_rxdone(entry, &desc);
+	memset(&rxdesc, 0, sizeof(rxdesc));
+	rt2x00dev->ops->lib->fill_rxdone(entry, &rxdesc);
 
 	/*
 	 * Allocate a new sk buffer to replace the current one.
 	 * If allocation fails, we should drop the current frame
 	 * so we can recycle the existing sk buffer for the new frame.
-	 * As alignment we use 2 and not NET_IP_ALIGN because we need
-	 * to be sure we have 2 bytes room in the head. (NET_IP_ALIGN
-	 * can be 0 on some hardware). We use these 2 bytes for frame
-	 * alignment later, we assume that the chance that
-	 * header_size % 4 == 2 is bigger then header_size % 2 == 0
-	 * and thus optimize alignment by reserving the 2 bytes in
-	 * advance.
 	 */
-	frame_size = entry->ring->data_size + entry->ring->desc_size;
-	skb = dev_alloc_skb(frame_size + 2);
+	skb = rt2x00usb_alloc_rxskb(entry->queue);
 	if (!skb)
 		goto skip_entry;
 
-	skb_reserve(skb, 2);
-	skb_put(skb, frame_size);
-
-	/*
-	 * The data behind the ieee80211 header must be
-	 * aligned on a 4 byte boundary.
-	 */
-	hdr = (struct ieee80211_hdr *)entry->skb->data;
-	header_size =
-	    ieee80211_get_hdrlen(le16_to_cpu(hdr->frame_control));
-
-	if (header_size % 4 == 0) {
-		skb_push(entry->skb, 2);
-		memmove(entry->skb->data, entry->skb->data + 2, skb->len - 2);
-	}
-
-	/*
-	 * Trim the entire buffer down to only contain the valid frame data
-	 * excluding the device descriptor. The position of the descriptor
-	 * varies. This means that we should check where the descriptor is
-	 * and decide if we need to pull the data pointer to exclude the
-	 * device descriptor.
-	 */
-	if (skbdesc->data > skbdesc->desc)
-		skb_pull(entry->skb, skbdesc->desc_len);
-	skb_trim(entry->skb, desc.size);
-
 	/*
 	 * Send the frame to rt2x00lib for further processing.
 	 */
-	rt2x00lib_rxdone(entry, entry->skb, &desc);
+	rt2x00lib_rxdone(entry, &rxdesc);
 
 	/*
 	 * Replace current entry's skb with the newly allocated one,
@@ -325,12 +311,12 @@ static void rt2x00usb_interrupt_rxdone(struct urb *urb)
 	urb->transfer_buffer_length = entry->skb->len;
 
 skip_entry:
-	if (test_bit(DEVICE_ENABLED_RADIO, &ring->rt2x00dev->flags)) {
-		__set_bit(ENTRY_OWNER_NIC, &entry->flags);
+	if (test_bit(DEVICE_ENABLED_RADIO, &entry->queue->rt2x00dev->flags)) {
+		__set_bit(ENTRY_OWNER_DEVICE_DATA, &entry->flags);
 		usb_submit_urb(urb, GFP_ATOMIC);
 	}
 
-	rt2x00_ring_index_inc(ring);
+	rt2x00queue_index_inc(entry->queue, Q_INDEX);
 }
 
 /*
@@ -338,18 +324,27 @@ skip_entry:
  */
 void rt2x00usb_disable_radio(struct rt2x00_dev *rt2x00dev)
 {
-	struct data_ring *ring;
+	struct queue_entry_priv_usb_rx *priv_rx;
+	struct queue_entry_priv_usb_tx *priv_tx;
+	struct data_queue *queue;
 	unsigned int i;
 
 	rt2x00usb_vendor_request_sw(rt2x00dev, USB_RX_CONTROL, 0x0000, 0x0000,
 				    REGISTER_TIMEOUT);
 
 	/*
-	 * Cancel all rings.
+	 * Cancel all queues.
 	 */
-	ring_for_each(rt2x00dev, ring) {
-		for (i = 0; i < ring->stats.limit; i++)
-			usb_kill_urb(ring->entry[i].priv);
+	for (i = 0; i < rt2x00dev->rx->limit; i++) {
+		priv_rx = rt2x00dev->rx->entries[i].priv_data;
+		usb_kill_urb(priv_rx->urb);
+	}
+
+	txall_queue_for_each(rt2x00dev, queue) {
+		for (i = 0; i < queue->limit; i++) {
+			priv_tx = queue->entries[i].priv_data;
+			usb_kill_urb(priv_tx->urb);
+		}
 	}
 }
 EXPORT_SYMBOL_GPL(rt2x00usb_disable_radio);
@@ -358,64 +353,108 @@ EXPORT_SYMBOL_GPL(rt2x00usb_disable_radio);
  * Device initialization handlers.
  */
 void rt2x00usb_init_rxentry(struct rt2x00_dev *rt2x00dev,
-			    struct data_entry *entry)
+			    struct queue_entry *entry)
 {
-	struct usb_device *usb_dev =
-	     interface_to_usbdev(rt2x00dev_usb(rt2x00dev));
+	struct usb_device *usb_dev = rt2x00dev_usb_dev(rt2x00dev);
+	struct queue_entry_priv_usb_rx *priv_rx = entry->priv_data;
 
-	usb_fill_bulk_urb(entry->priv, usb_dev,
+	usb_fill_bulk_urb(priv_rx->urb, usb_dev,
 			  usb_rcvbulkpipe(usb_dev, 1),
 			  entry->skb->data, entry->skb->len,
 			  rt2x00usb_interrupt_rxdone, entry);
 
-	__set_bit(ENTRY_OWNER_NIC, &entry->flags);
-	usb_submit_urb(entry->priv, GFP_ATOMIC);
+	__set_bit(ENTRY_OWNER_DEVICE_DATA, &entry->flags);
+	usb_submit_urb(priv_rx->urb, GFP_ATOMIC);
 }
 EXPORT_SYMBOL_GPL(rt2x00usb_init_rxentry);
 
 void rt2x00usb_init_txentry(struct rt2x00_dev *rt2x00dev,
-			    struct data_entry *entry)
+			    struct queue_entry *entry)
 {
 	entry->flags = 0;
 }
 EXPORT_SYMBOL_GPL(rt2x00usb_init_txentry);
 
 static int rt2x00usb_alloc_urb(struct rt2x00_dev *rt2x00dev,
-			       struct data_ring *ring)
+			       struct data_queue *queue)
 {
+	struct queue_entry_priv_usb_rx *priv_rx;
+	struct queue_entry_priv_usb_tx *priv_tx;
+	struct queue_entry_priv_usb_bcn *priv_bcn;
+	struct urb *urb;
+	unsigned int guardian =
+	    test_bit(DRIVER_REQUIRE_BEACON_GUARD, &rt2x00dev->flags);
 	unsigned int i;
 
 	/*
 	 * Allocate the URB's
 	 */
-	for (i = 0; i < ring->stats.limit; i++) {
-		ring->entry[i].priv = usb_alloc_urb(0, GFP_KERNEL);
-		if (!ring->entry[i].priv)
+	for (i = 0; i < queue->limit; i++) {
+		urb = usb_alloc_urb(0, GFP_KERNEL);
+		if (!urb)
 			return -ENOMEM;
+
+		if (queue->qid == QID_RX) {
+			priv_rx = queue->entries[i].priv_data;
+			priv_rx->urb = urb;
+		} else if (queue->qid == QID_MGMT && guardian) {
+			priv_bcn = queue->entries[i].priv_data;
+			priv_bcn->urb = urb;
+
+			urb = usb_alloc_urb(0, GFP_KERNEL);
+			if (!urb)
+				return -ENOMEM;
+
+			priv_bcn->guardian_urb = urb;
+		} else {
+			priv_tx = queue->entries[i].priv_data;
+			priv_tx->urb = urb;
+		}
 	}
 
 	return 0;
 }
 
 static void rt2x00usb_free_urb(struct rt2x00_dev *rt2x00dev,
-			       struct data_ring *ring)
+			       struct data_queue *queue)
 {
+	struct queue_entry_priv_usb_rx *priv_rx;
+	struct queue_entry_priv_usb_tx *priv_tx;
+	struct queue_entry_priv_usb_bcn *priv_bcn;
+	struct urb *urb;
+	unsigned int guardian =
+	    test_bit(DRIVER_REQUIRE_BEACON_GUARD, &rt2x00dev->flags);
 	unsigned int i;
 
-	if (!ring->entry)
+	if (!queue->entries)
 		return;
 
-	for (i = 0; i < ring->stats.limit; i++) {
-		usb_kill_urb(ring->entry[i].priv);
-		usb_free_urb(ring->entry[i].priv);
-		if (ring->entry[i].skb)
-			kfree_skb(ring->entry[i].skb);
+	for (i = 0; i < queue->limit; i++) {
+		if (queue->qid == QID_RX) {
+			priv_rx = queue->entries[i].priv_data;
+			urb = priv_rx->urb;
+		} else if (queue->qid == QID_MGMT && guardian) {
+			priv_bcn = queue->entries[i].priv_data;
+
+			usb_kill_urb(priv_bcn->guardian_urb);
+			usb_free_urb(priv_bcn->guardian_urb);
+
+			urb = priv_bcn->urb;
+		} else {
+			priv_tx = queue->entries[i].priv_data;
+			urb = priv_tx->urb;
+		}
+
+		usb_kill_urb(urb);
+		usb_free_urb(urb);
+		if (queue->entries[i].skb)
+			kfree_skb(queue->entries[i].skb);
 	}
 }
 
 int rt2x00usb_initialize(struct rt2x00_dev *rt2x00dev)
 {
-	struct data_ring *ring;
+	struct data_queue *queue;
 	struct sk_buff *skb;
 	unsigned int entry_size;
 	unsigned int i;
@@ -424,25 +463,22 @@ int rt2x00usb_initialize(struct rt2x00_dev *rt2x00dev)
 	/*
 	 * Allocate DMA
 	 */
-	ring_for_each(rt2x00dev, ring) {
-		status = rt2x00usb_alloc_urb(rt2x00dev, ring);
+	queue_for_each(rt2x00dev, queue) {
+		status = rt2x00usb_alloc_urb(rt2x00dev, queue);
 		if (status)
 			goto exit;
 	}
 
 	/*
-	 * For the RX ring, skb's should be allocated.
+	 * For the RX queue, skb's should be allocated.
 	 */
 	entry_size = rt2x00dev->rx->data_size + rt2x00dev->rx->desc_size;
-	for (i = 0; i < rt2x00dev->rx->stats.limit; i++) {
-		skb = dev_alloc_skb(NET_IP_ALIGN + entry_size);
+	for (i = 0; i < rt2x00dev->rx->limit; i++) {
+		skb = rt2x00usb_alloc_rxskb(rt2x00dev->rx);
 		if (!skb)
 			goto exit;
 
-		skb_reserve(skb, NET_IP_ALIGN);
-		skb_put(skb, entry_size);
-
-		rt2x00dev->rx->entry[i].skb = skb;
+		rt2x00dev->rx->entries[i].skb = skb;
 	}
 
 	return 0;
@@ -456,10 +492,10 @@ EXPORT_SYMBOL_GPL(rt2x00usb_initialize);
 
 void rt2x00usb_uninitialize(struct rt2x00_dev *rt2x00dev)
 {
-	struct data_ring *ring;
+	struct data_queue *queue;
 
-	ring_for_each(rt2x00dev, ring)
-		rt2x00usb_free_urb(rt2x00dev, ring);
+	queue_for_each(rt2x00dev, queue)
+		rt2x00usb_free_urb(rt2x00dev, queue);
 }
 EXPORT_SYMBOL_GPL(rt2x00usb_uninitialize);
 
@@ -627,9 +663,9 @@ EXPORT_SYMBOL_GPL(rt2x00usb_resume);
 #endif /* CONFIG_PM */
 
 /*
- * rt2x00pci module information.
+ * rt2x00usb module information.
  */
 MODULE_AUTHOR(DRV_PROJECT);
 MODULE_VERSION(DRV_VERSION);
-MODULE_DESCRIPTION("rt2x00 library");
+MODULE_DESCRIPTION("rt2x00 usb library");
 MODULE_LICENSE("GPL");

drivers/net/wireless/rt2x00/rt2x00usb.h

@@ -160,16 +160,58 @@ void rt2x00usb_disable_radio(struct rt2x00_dev *rt2x00dev);
  * TX data handlers.
  */
 int rt2x00usb_write_tx_data(struct rt2x00_dev *rt2x00dev,
-			    struct data_ring *ring, struct sk_buff *skb,
+			    struct data_queue *queue, struct sk_buff *skb,
 			    struct ieee80211_tx_control *control);
 
+/**
+ * struct queue_entry_priv_usb_rx: Per RX entry USB specific information
+ *
+ * @urb: Urb structure used for device communication.
+ */
+struct queue_entry_priv_usb_rx {
+	struct urb *urb;
+};
+
+/**
+ * struct queue_entry_priv_usb_tx: Per TX entry USB specific information
+ *
+ * @urb: Urb structure used for device communication.
+ * @control: mac80211 control structure used to transmit data.
+ */
+struct queue_entry_priv_usb_tx {
+	struct urb *urb;
+
+	struct ieee80211_tx_control control;
+};
+
+/**
+ * struct queue_entry_priv_usb_tx: Per TX entry USB specific information
+ *
+ * The first section should match &struct queue_entry_priv_usb_tx exactly.
+ * rt2500usb can use this structure to send a guardian byte when working
+ * with beacons.
+ *
+ * @urb: Urb structure used for device communication.
+ * @control: mac80211 control structure used to transmit data.
+ * @guardian_data: Set to 0, used for sending the guardian data.
+ * @guardian_urb: Urb structure used to send the guardian data.
+ */
+struct queue_entry_priv_usb_bcn {
+	struct urb *urb;
+
+	struct ieee80211_tx_control control;
+
+	unsigned int guardian_data;
+	struct urb *guardian_urb;
+};
+
 /*
  * Device initialization handlers.
  */
 void rt2x00usb_init_rxentry(struct rt2x00_dev *rt2x00dev,
-			    struct data_entry *entry);
+			    struct queue_entry *entry);
 void rt2x00usb_init_txentry(struct rt2x00_dev *rt2x00dev,
-			    struct data_entry *entry);
+			    struct queue_entry *entry);
 int rt2x00usb_initialize(struct rt2x00_dev *rt2x00dev);
 void rt2x00usb_uninitialize(struct rt2x00_dev *rt2x00dev);
 

drivers/net/wireless/rt2x00/rt61pci.c

@@ -262,7 +262,7 @@ static int rt61pci_rfkill_poll(struct rt2x00_dev *rt2x00dev)
 	u32 reg;
 
 	rt2x00pci_register_read(rt2x00dev, MAC_CSR13, &reg);
-	return rt2x00_get_field32(reg, MAC_CSR13_BIT5);;
+	return rt2x00_get_field32(reg, MAC_CSR13_BIT5);
 }
 #else
 #define rt61pci_rfkill_poll	NULL
@@ -990,49 +990,49 @@ static int rt61pci_load_firmware(struct rt2x00_dev *rt2x00dev, void *data,
 }
 
 static void rt61pci_init_rxentry(struct rt2x00_dev *rt2x00dev,
-				 struct data_entry *entry)
+				 struct queue_entry *entry)
 {
-	__le32 *rxd = entry->priv;
+	struct queue_entry_priv_pci_rx *priv_rx = entry->priv_data;
 	u32 word;
 
-	rt2x00_desc_read(rxd, 5, &word);
-	rt2x00_set_field32(&word, RXD_W5_BUFFER_PHYSICAL_ADDRESS,
-			   entry->data_dma);
-	rt2x00_desc_write(rxd, 5, word);
+	rt2x00_desc_read(priv_rx->desc, 5, &word);
+	rt2x00_set_field32(&word, RXD_W5_BUFFER_PHYSICAL_ADDRESS, priv_rx->dma);
+	rt2x00_desc_write(priv_rx->desc, 5, word);
 
-	rt2x00_desc_read(rxd, 0, &word);
+	rt2x00_desc_read(priv_rx->desc, 0, &word);
 	rt2x00_set_field32(&word, RXD_W0_OWNER_NIC, 1);
-	rt2x00_desc_write(rxd, 0, word);
+	rt2x00_desc_write(priv_rx->desc, 0, word);
 }
 
 static void rt61pci_init_txentry(struct rt2x00_dev *rt2x00dev,
-				 struct data_entry *entry)
+				 struct queue_entry *entry)
 {
-	__le32 *txd = entry->priv;
+	struct queue_entry_priv_pci_tx *priv_tx = entry->priv_data;
 	u32 word;
 
-	rt2x00_desc_read(txd, 1, &word);
+	rt2x00_desc_read(priv_tx->desc, 1, &word);
 	rt2x00_set_field32(&word, TXD_W1_BUFFER_COUNT, 1);
-	rt2x00_desc_write(txd, 1, word);
+	rt2x00_desc_write(priv_tx->desc, 1, word);
 
-	rt2x00_desc_read(txd, 5, &word);
-	rt2x00_set_field32(&word, TXD_W5_PID_TYPE, entry->ring->queue_idx);
+	rt2x00_desc_read(priv_tx->desc, 5, &word);
+	rt2x00_set_field32(&word, TXD_W5_PID_TYPE, entry->queue->qid);
 	rt2x00_set_field32(&word, TXD_W5_PID_SUBTYPE, entry->entry_idx);
-	rt2x00_desc_write(txd, 5, word);
+	rt2x00_desc_write(priv_tx->desc, 5, word);
 
-	rt2x00_desc_read(txd, 6, &word);
-	rt2x00_set_field32(&word, TXD_W6_BUFFER_PHYSICAL_ADDRESS,
-			   entry->data_dma);
-	rt2x00_desc_write(txd, 6, word);
+	rt2x00_desc_read(priv_tx->desc, 6, &word);
+	rt2x00_set_field32(&word, TXD_W6_BUFFER_PHYSICAL_ADDRESS, priv_tx->dma);
+	rt2x00_desc_write(priv_tx->desc, 6, word);
 
-	rt2x00_desc_read(txd, 0, &word);
+	rt2x00_desc_read(priv_tx->desc, 0, &word);
 	rt2x00_set_field32(&word, TXD_W0_VALID, 0);
 	rt2x00_set_field32(&word, TXD_W0_OWNER_NIC, 0);
-	rt2x00_desc_write(txd, 0, word);
+	rt2x00_desc_write(priv_tx->desc, 0, word);
 }
 
-static int rt61pci_init_rings(struct rt2x00_dev *rt2x00dev)
+static int rt61pci_init_queues(struct rt2x00_dev *rt2x00dev)
 {
+	struct queue_entry_priv_pci_rx *priv_rx;
+	struct queue_entry_priv_pci_tx *priv_tx;
 	u32 reg;
 
 	/*
@@ -1040,59 +1040,50 @@ static int rt61pci_init_rings(struct rt2x00_dev *rt2x00dev)
 	 */
 	rt2x00pci_register_read(rt2x00dev, TX_RING_CSR0, &reg);
 	rt2x00_set_field32(&reg, TX_RING_CSR0_AC0_RING_SIZE,
-			   rt2x00dev->tx[IEEE80211_TX_QUEUE_DATA0].stats.limit);
+			   rt2x00dev->tx[0].limit);
 	rt2x00_set_field32(&reg, TX_RING_CSR0_AC1_RING_SIZE,
-			   rt2x00dev->tx[IEEE80211_TX_QUEUE_DATA1].stats.limit);
+			   rt2x00dev->tx[1].limit);
 	rt2x00_set_field32(&reg, TX_RING_CSR0_AC2_RING_SIZE,
-			   rt2x00dev->tx[IEEE80211_TX_QUEUE_DATA2].stats.limit);
+			   rt2x00dev->tx[2].limit);
 	rt2x00_set_field32(&reg, TX_RING_CSR0_AC3_RING_SIZE,
-			   rt2x00dev->tx[IEEE80211_TX_QUEUE_DATA3].stats.limit);
+			   rt2x00dev->tx[3].limit);
 	rt2x00pci_register_write(rt2x00dev, TX_RING_CSR0, reg);
 
 	rt2x00pci_register_read(rt2x00dev, TX_RING_CSR1, &reg);
-	rt2x00_set_field32(&reg, TX_RING_CSR1_MGMT_RING_SIZE,
-			   rt2x00dev->tx[IEEE80211_TX_QUEUE_DATA4].stats.limit);
 	rt2x00_set_field32(&reg, TX_RING_CSR1_TXD_SIZE,
-			   rt2x00dev->tx[IEEE80211_TX_QUEUE_DATA0].desc_size /
-			   4);
+			   rt2x00dev->tx[0].desc_size / 4);
 	rt2x00pci_register_write(rt2x00dev, TX_RING_CSR1, reg);
 
+	priv_tx = rt2x00dev->tx[0].entries[0].priv_data;
 	rt2x00pci_register_read(rt2x00dev, AC0_BASE_CSR, &reg);
-	rt2x00_set_field32(&reg, AC0_BASE_CSR_RING_REGISTER,
-			   rt2x00dev->tx[IEEE80211_TX_QUEUE_DATA0].data_dma);
+	rt2x00_set_field32(&reg, AC0_BASE_CSR_RING_REGISTER, priv_tx->dma);
 	rt2x00pci_register_write(rt2x00dev, AC0_BASE_CSR, reg);
 
+	priv_tx = rt2x00dev->tx[1].entries[0].priv_data;
 	rt2x00pci_register_read(rt2x00dev, AC1_BASE_CSR, &reg);
-	rt2x00_set_field32(&reg, AC1_BASE_CSR_RING_REGISTER,
-			   rt2x00dev->tx[IEEE80211_TX_QUEUE_DATA1].data_dma);
+	rt2x00_set_field32(&reg, AC1_BASE_CSR_RING_REGISTER, priv_tx->dma);
 	rt2x00pci_register_write(rt2x00dev, AC1_BASE_CSR, reg);
 
+	priv_tx = rt2x00dev->tx[2].entries[0].priv_data;
 	rt2x00pci_register_read(rt2x00dev, AC2_BASE_CSR, &reg);
-	rt2x00_set_field32(&reg, AC2_BASE_CSR_RING_REGISTER,
-			   rt2x00dev->tx[IEEE80211_TX_QUEUE_DATA2].data_dma);
+	rt2x00_set_field32(&reg, AC2_BASE_CSR_RING_REGISTER, priv_tx->dma);
 	rt2x00pci_register_write(rt2x00dev, AC2_BASE_CSR, reg);
 
+	priv_tx = rt2x00dev->tx[3].entries[0].priv_data;
 	rt2x00pci_register_read(rt2x00dev, AC3_BASE_CSR, &reg);
-	rt2x00_set_field32(&reg, AC3_BASE_CSR_RING_REGISTER,
-			   rt2x00dev->tx[IEEE80211_TX_QUEUE_DATA3].data_dma);
+	rt2x00_set_field32(&reg, AC3_BASE_CSR_RING_REGISTER, priv_tx->dma);
 	rt2x00pci_register_write(rt2x00dev, AC3_BASE_CSR, reg);
 
-	rt2x00pci_register_read(rt2x00dev, MGMT_BASE_CSR, &reg);
-	rt2x00_set_field32(&reg, MGMT_BASE_CSR_RING_REGISTER,
-			   rt2x00dev->tx[IEEE80211_TX_QUEUE_DATA4].data_dma);
-	rt2x00pci_register_write(rt2x00dev, MGMT_BASE_CSR, reg);
-
 	rt2x00pci_register_read(rt2x00dev, RX_RING_CSR, &reg);
-	rt2x00_set_field32(&reg, RX_RING_CSR_RING_SIZE,
-			   rt2x00dev->rx->stats.limit);
+	rt2x00_set_field32(&reg, RX_RING_CSR_RING_SIZE, rt2x00dev->rx->limit);
 	rt2x00_set_field32(&reg, RX_RING_CSR_RXD_SIZE,
 			   rt2x00dev->rx->desc_size / 4);
 	rt2x00_set_field32(&reg, RX_RING_CSR_RXD_WRITEBACK_SIZE, 4);
 	rt2x00pci_register_write(rt2x00dev, RX_RING_CSR, reg);
 
+	priv_rx = rt2x00dev->rx->entries[0].priv_data;
 	rt2x00pci_register_read(rt2x00dev, RX_BASE_CSR, &reg);
-	rt2x00_set_field32(&reg, RX_BASE_CSR_RING_REGISTER,
-			   rt2x00dev->rx->data_dma);
+	rt2x00_set_field32(&reg, RX_BASE_CSR_RING_REGISTER, priv_rx->dma);
 	rt2x00pci_register_write(rt2x00dev, RX_BASE_CSR, reg);
 
 	rt2x00pci_register_read(rt2x00dev, TX_DMA_DST_CSR, &reg);
@@ -1108,7 +1099,7 @@ static int rt61pci_init_rings(struct rt2x00_dev *rt2x00dev)
 	rt2x00_set_field32(&reg, LOAD_TX_RING_CSR_LOAD_TXD_AC1, 1);
 	rt2x00_set_field32(&reg, LOAD_TX_RING_CSR_LOAD_TXD_AC2, 1);
 	rt2x00_set_field32(&reg, LOAD_TX_RING_CSR_LOAD_TXD_AC3, 1);
-	rt2x00_set_field32(&reg, LOAD_TX_RING_CSR_LOAD_TXD_MGMT, 1);
+	rt2x00_set_field32(&reg, LOAD_TX_RING_CSR_LOAD_TXD_MGMT, 0);
 	rt2x00pci_register_write(rt2x00dev, LOAD_TX_RING_CSR, reg);
 
 	rt2x00pci_register_read(rt2x00dev, RX_CNTL_CSR, &reg);
@@ -1375,7 +1366,7 @@ static int rt61pci_enable_radio(struct rt2x00_dev *rt2x00dev)
 	/*
 	 * Initialize all registers.
 	 */
-	if (rt61pci_init_rings(rt2x00dev) ||
+	if (rt61pci_init_queues(rt2x00dev) ||
 	    rt61pci_init_registers(rt2x00dev) ||
 	    rt61pci_init_bbp(rt2x00dev)) {
 		ERROR(rt2x00dev, "Register initialization failed.\n");
@@ -1508,10 +1499,10 @@ static int rt61pci_set_device_state(struct rt2x00_dev *rt2x00dev,
  */
 static void rt61pci_write_tx_desc(struct rt2x00_dev *rt2x00dev,
 				    struct sk_buff *skb,
-				    struct txdata_entry_desc *desc,
+				    struct txentry_desc *txdesc,
 				    struct ieee80211_tx_control *control)
 {
-	struct skb_desc *skbdesc = get_skb_desc(skb);
+	struct skb_frame_desc *skbdesc = get_skb_frame_desc(skb);
 	__le32 *txd = skbdesc->desc;
 	u32 word;
 
@@ -1519,19 +1510,19 @@ static void rt61pci_write_tx_desc(struct rt2x00_dev *rt2x00dev,
 	 * Start writing the descriptor words.
 	 */
 	rt2x00_desc_read(txd, 1, &word);
-	rt2x00_set_field32(&word, TXD_W1_HOST_Q_ID, desc->queue);
-	rt2x00_set_field32(&word, TXD_W1_AIFSN, desc->aifs);
-	rt2x00_set_field32(&word, TXD_W1_CWMIN, desc->cw_min);
-	rt2x00_set_field32(&word, TXD_W1_CWMAX, desc->cw_max);
+	rt2x00_set_field32(&word, TXD_W1_HOST_Q_ID, txdesc->queue);
+	rt2x00_set_field32(&word, TXD_W1_AIFSN, txdesc->aifs);
+	rt2x00_set_field32(&word, TXD_W1_CWMIN, txdesc->cw_min);
+	rt2x00_set_field32(&word, TXD_W1_CWMAX, txdesc->cw_max);
 	rt2x00_set_field32(&word, TXD_W1_IV_OFFSET, IEEE80211_HEADER);
 	rt2x00_set_field32(&word, TXD_W1_HW_SEQUENCE, 1);
 	rt2x00_desc_write(txd, 1, word);
 
 	rt2x00_desc_read(txd, 2, &word);
-	rt2x00_set_field32(&word, TXD_W2_PLCP_SIGNAL, desc->signal);
-	rt2x00_set_field32(&word, TXD_W2_PLCP_SERVICE, desc->service);
-	rt2x00_set_field32(&word, TXD_W2_PLCP_LENGTH_LOW, desc->length_low);
-	rt2x00_set_field32(&word, TXD_W2_PLCP_LENGTH_HIGH, desc->length_high);
+	rt2x00_set_field32(&word, TXD_W2_PLCP_SIGNAL, txdesc->signal);
+	rt2x00_set_field32(&word, TXD_W2_PLCP_SERVICE, txdesc->service);
+	rt2x00_set_field32(&word, TXD_W2_PLCP_LENGTH_LOW, txdesc->length_low);
+	rt2x00_set_field32(&word, TXD_W2_PLCP_LENGTH_HIGH, txdesc->length_high);
 	rt2x00_desc_write(txd, 2, word);
 
 	rt2x00_desc_read(txd, 5, &word);
@@ -1548,21 +1539,21 @@ static void rt61pci_write_tx_desc(struct rt2x00_dev *rt2x00dev,
 	rt2x00_set_field32(&word, TXD_W0_OWNER_NIC, 1);
 	rt2x00_set_field32(&word, TXD_W0_VALID, 1);
 	rt2x00_set_field32(&word, TXD_W0_MORE_FRAG,
-			   test_bit(ENTRY_TXD_MORE_FRAG, &desc->flags));
+			   test_bit(ENTRY_TXD_MORE_FRAG, &txdesc->flags));
 	rt2x00_set_field32(&word, TXD_W0_ACK,
-			   test_bit(ENTRY_TXD_ACK, &desc->flags));
+			   test_bit(ENTRY_TXD_ACK, &txdesc->flags));
 	rt2x00_set_field32(&word, TXD_W0_TIMESTAMP,
-			   test_bit(ENTRY_TXD_REQ_TIMESTAMP, &desc->flags));
+			   test_bit(ENTRY_TXD_REQ_TIMESTAMP, &txdesc->flags));
 	rt2x00_set_field32(&word, TXD_W0_OFDM,
-			   test_bit(ENTRY_TXD_OFDM_RATE, &desc->flags));
-	rt2x00_set_field32(&word, TXD_W0_IFS, desc->ifs);
+			   test_bit(ENTRY_TXD_OFDM_RATE, &txdesc->flags));
+	rt2x00_set_field32(&word, TXD_W0_IFS, txdesc->ifs);
 	rt2x00_set_field32(&word, TXD_W0_RETRY_MODE,
 			   !!(control->flags &
 			      IEEE80211_TXCTL_LONG_RETRY_LIMIT));
 	rt2x00_set_field32(&word, TXD_W0_TKIP_MIC, 0);
 	rt2x00_set_field32(&word, TXD_W0_DATABYTE_COUNT, skbdesc->data_len);
 	rt2x00_set_field32(&word, TXD_W0_BURST,
-			   test_bit(ENTRY_TXD_BURST, &desc->flags));
+			   test_bit(ENTRY_TXD_BURST, &txdesc->flags));
 	rt2x00_set_field32(&word, TXD_W0_CIPHER_ALG, CIPHER_NONE);
 	rt2x00_desc_write(txd, 0, word);
 }
@@ -1648,28 +1639,28 @@ static int rt61pci_agc_to_rssi(struct rt2x00_dev *rt2x00dev, int rxd_w1)
 	return rt2x00_get_field32(rxd_w1, RXD_W1_RSSI_AGC) * 2 - offset;
 }
 
-static void rt61pci_fill_rxdone(struct data_entry *entry,
-			        struct rxdata_entry_desc *desc)
+static void rt61pci_fill_rxdone(struct queue_entry *entry,
+			        struct rxdone_entry_desc *rxdesc)
 {
-	__le32 *rxd = entry->priv;
+	struct queue_entry_priv_pci_rx *priv_rx = entry->priv_data;
 	u32 word0;
 	u32 word1;
 
-	rt2x00_desc_read(rxd, 0, &word0);
-	rt2x00_desc_read(rxd, 1, &word1);
+	rt2x00_desc_read(priv_rx->desc, 0, &word0);
+	rt2x00_desc_read(priv_rx->desc, 1, &word1);
 
-	desc->flags = 0;
+	rxdesc->flags = 0;
 	if (rt2x00_get_field32(word0, RXD_W0_CRC_ERROR))
-		desc->flags |= RX_FLAG_FAILED_FCS_CRC;
+		rxdesc->flags |= RX_FLAG_FAILED_FCS_CRC;
 
 	/*
 	 * Obtain the status about this packet.
 	 */
-	desc->signal = rt2x00_get_field32(word1, RXD_W1_SIGNAL);
-	desc->rssi = rt61pci_agc_to_rssi(entry->ring->rt2x00dev, word1);
-	desc->ofdm = rt2x00_get_field32(word0, RXD_W0_OFDM);
-	desc->size = rt2x00_get_field32(word0, RXD_W0_DATABYTE_COUNT);
-	desc->my_bss = !!rt2x00_get_field32(word0, RXD_W0_MY_BSS);
+	rxdesc->signal = rt2x00_get_field32(word1, RXD_W1_SIGNAL);
+	rxdesc->rssi = rt61pci_agc_to_rssi(entry->queue->rt2x00dev, word1);
+	rxdesc->ofdm = rt2x00_get_field32(word0, RXD_W0_OFDM);
+	rxdesc->size = rt2x00_get_field32(word0, RXD_W0_DATABYTE_COUNT);
+	rxdesc->my_bss = !!rt2x00_get_field32(word0, RXD_W0_MY_BSS);
 }
 
 /*
@@ -1677,17 +1668,16 @@ static void rt61pci_fill_rxdone(struct data_entry *entry,
  */
 static void rt61pci_txdone(struct rt2x00_dev *rt2x00dev)
 {
-	struct data_ring *ring;
-	struct data_entry *entry;
-	struct data_entry *entry_done;
-	__le32 *txd;
+	struct data_queue *queue;
+	struct queue_entry *entry;
+	struct queue_entry *entry_done;
+	struct queue_entry_priv_pci_tx *priv_tx;
+	struct txdone_entry_desc txdesc;
 	u32 word;
 	u32 reg;
 	u32 old_reg;
 	int type;
 	int index;
-	int tx_status;
-	int retry;
 
 	/*
 	 * During each loop we will compare the freshly read
@@ -1710,11 +1700,11 @@ static void rt61pci_txdone(struct rt2x00_dev *rt2x00dev)
 
 		/*
 		 * Skip this entry when it contains an invalid
-		 * ring identication number.
+		 * queue identication number.
 		 */
 		type = rt2x00_get_field32(reg, STA_CSR4_PID_TYPE);
-		ring = rt2x00lib_get_ring(rt2x00dev, type);
-		if (unlikely(!ring))
+		queue = rt2x00queue_get_queue(rt2x00dev, type);
+		if (unlikely(!queue))
 			continue;
 
 		/*
@@ -1722,36 +1712,40 @@ static void rt61pci_txdone(struct rt2x00_dev *rt2x00dev)
 		 * index number.
 		 */
 		index = rt2x00_get_field32(reg, STA_CSR4_PID_SUBTYPE);
-		if (unlikely(index >= ring->stats.limit))
+		if (unlikely(index >= queue->limit))
 			continue;
 
-		entry = &ring->entry[index];
-		txd = entry->priv;
-		rt2x00_desc_read(txd, 0, &word);
+		entry = &queue->entries[index];
+		priv_tx = entry->priv_data;
+		rt2x00_desc_read(priv_tx->desc, 0, &word);
 
 		if (rt2x00_get_field32(word, TXD_W0_OWNER_NIC) ||
 		    !rt2x00_get_field32(word, TXD_W0_VALID))
 			return;
 
-		entry_done = rt2x00_get_data_entry_done(ring);
+		entry_done = rt2x00queue_get_entry(queue, Q_INDEX_DONE);
 		while (entry != entry_done) {
-			/* Catch up. Just report any entries we missed as
-			 * failed. */
+			/* Catch up.
+			 * Just report any entries we missed as failed.
+			 */
 			WARNING(rt2x00dev,
-				"TX status report missed for entry %p\n",
-				entry_done);
-			rt2x00pci_txdone(rt2x00dev, entry_done, TX_FAIL_OTHER,
-					 0);
-			entry_done = rt2x00_get_data_entry_done(ring);
+				"TX status report missed for entry %d\n",
+				entry_done->entry_idx);
+
+			txdesc.status = TX_FAIL_OTHER;
+			txdesc.retry = 0;
+
+			rt2x00pci_txdone(rt2x00dev, entry_done, &txdesc);
+			entry_done = rt2x00queue_get_entry(queue, Q_INDEX_DONE);
 		}
 
 		/*
 		 * Obtain the status about this packet.
 		 */
-		tx_status = rt2x00_get_field32(reg, STA_CSR4_TX_RESULT);
-		retry = rt2x00_get_field32(reg, STA_CSR4_RETRY_COUNT);
+		txdesc.status = rt2x00_get_field32(reg, STA_CSR4_TX_RESULT);
+		txdesc.retry = rt2x00_get_field32(reg, STA_CSR4_RETRY_COUNT);
 
-		rt2x00pci_txdone(rt2x00dev, entry, tx_status, retry);
+		rt2x00pci_txdone(rt2x00dev, entry, &txdesc);
 	}
 }
 
@@ -2381,9 +2375,9 @@ static int rt61pci_beacon_update(struct ieee80211_hw *hw, struct sk_buff *skb,
 			  struct ieee80211_tx_control *control)
 {
 	struct rt2x00_dev *rt2x00dev = hw->priv;
-	struct skb_desc *desc;
-	struct data_ring *ring;
-	struct data_entry *entry;
+	struct skb_frame_desc *skbdesc;
+	struct data_queue *queue;
+	struct queue_entry *entry;
 
 	/*
 	 * Just in case the ieee80211 doesn't set this,
@@ -2391,15 +2385,15 @@ static int rt61pci_beacon_update(struct ieee80211_hw *hw, struct sk_buff *skb,
 	 * initialization.
 	 */
 	control->queue = IEEE80211_TX_QUEUE_BEACON;
-	ring = rt2x00lib_get_ring(rt2x00dev, control->queue);
-	entry = rt2x00_get_data_entry(ring);
+	queue = rt2x00queue_get_queue(rt2x00dev, control->queue);
+	entry = rt2x00queue_get_entry(queue, Q_INDEX);
 
 	/*
 	 * We need to append the descriptor in front of the
 	 * beacon frame.
 	 */
-	if (skb_headroom(skb) < TXD_DESC_SIZE) {
-		if (pskb_expand_head(skb, TXD_DESC_SIZE, 0, GFP_ATOMIC)) {
+	if (skb_headroom(skb) < queue->desc_size) {
+		if (pskb_expand_head(skb, queue->desc_size, 0, GFP_ATOMIC)) {
 			dev_kfree_skb(skb);
 			return -ENOMEM;
 		}
@@ -2408,19 +2402,19 @@ static int rt61pci_beacon_update(struct ieee80211_hw *hw, struct sk_buff *skb,
 	/*
 	 * Add the descriptor in front of the skb.
 	 */
-	skb_push(skb, ring->desc_size);
-	memset(skb->data, 0, ring->desc_size);
+	skb_push(skb, queue->desc_size);
+	memset(skb->data, 0, queue->desc_size);
 
 	/*
 	 * Fill in skb descriptor
 	 */
-	desc = get_skb_desc(skb);
-	desc->desc_len = ring->desc_size;
-	desc->data_len = skb->len - ring->desc_size;
-	desc->desc = skb->data;
-	desc->data = skb->data + ring->desc_size;
-	desc->ring = ring;
-	desc->entry = entry;
+	skbdesc = get_skb_frame_desc(skb);
+	memset(skbdesc, 0, sizeof(*skbdesc));
+	skbdesc->data = skb->data + queue->desc_size;
+	skbdesc->data_len = queue->data_size;
+	skbdesc->desc = skb->data;
+	skbdesc->desc_len = queue->desc_size;
+	skbdesc->entry = entry;
 
 	rt2x00lib_write_tx_desc(rt2x00dev, skb, control);
 
@@ -2479,12 +2473,34 @@ static const struct rt2x00lib_ops rt61pci_rt2x00_ops = {
 	.config			= rt61pci_config,
 };
 
+static const struct data_queue_desc rt61pci_queue_rx = {
+	.entry_num		= RX_ENTRIES,
+	.data_size		= DATA_FRAME_SIZE,
+	.desc_size		= RXD_DESC_SIZE,
+	.priv_size		= sizeof(struct queue_entry_priv_pci_rx),
+};
+
+static const struct data_queue_desc rt61pci_queue_tx = {
+	.entry_num		= TX_ENTRIES,
+	.data_size		= DATA_FRAME_SIZE,
+	.desc_size		= TXD_DESC_SIZE,
+	.priv_size		= sizeof(struct queue_entry_priv_pci_tx),
+};
+
+static const struct data_queue_desc rt61pci_queue_bcn = {
+	.entry_num		= BEACON_ENTRIES,
+	.data_size		= MGMT_FRAME_SIZE,
+	.desc_size		= TXINFO_SIZE,
+	.priv_size		= sizeof(struct queue_entry_priv_pci_tx),
+};
+
 static const struct rt2x00_ops rt61pci_ops = {
 	.name		= KBUILD_MODNAME,
-	.rxd_size	= RXD_DESC_SIZE,
-	.txd_size	= TXD_DESC_SIZE,
 	.eeprom_size	= EEPROM_SIZE,
 	.rf_size	= RF_SIZE,
+	.rx		= &rt61pci_queue_rx,
+	.tx		= &rt61pci_queue_tx,
+	.bcn		= &rt61pci_queue_bcn,
 	.lib		= &rt61pci_rt2x00_ops,
 	.hw		= &rt61pci_mac80211_ops,
 #ifdef CONFIG_RT2X00_LIB_DEBUGFS

drivers/net/wireless/rt2x00/rt61pci.h

@@ -1247,6 +1247,7 @@ struct hw_pairwise_ta_entry {
  * DMA descriptor defines.
  */
 #define TXD_DESC_SIZE			( 16 * sizeof(__le32) )
+#define TXINFO_SIZE			( 6 * sizeof(__le32) )
 #define RXD_DESC_SIZE			( 16 * sizeof(__le32) )
 
 /*

drivers/net/wireless/rt2x00/rt73usb.c

@@ -1234,10 +1234,10 @@ static int rt73usb_set_device_state(struct rt2x00_dev *rt2x00dev,
  */
 static void rt73usb_write_tx_desc(struct rt2x00_dev *rt2x00dev,
 				    struct sk_buff *skb,
-				    struct txdata_entry_desc *desc,
+				    struct txentry_desc *txdesc,
 				    struct ieee80211_tx_control *control)
 {
-	struct skb_desc *skbdesc = get_skb_desc(skb);
+	struct skb_frame_desc *skbdesc = get_skb_frame_desc(skb);
 	__le32 *txd = skbdesc->desc;
 	u32 word;
 
@@ -1245,19 +1245,19 @@ static void rt73usb_write_tx_desc(struct rt2x00_dev *rt2x00dev,
 	 * Start writing the descriptor words.
 	 */
 	rt2x00_desc_read(txd, 1, &word);
-	rt2x00_set_field32(&word, TXD_W1_HOST_Q_ID, desc->queue);
-	rt2x00_set_field32(&word, TXD_W1_AIFSN, desc->aifs);
-	rt2x00_set_field32(&word, TXD_W1_CWMIN, desc->cw_min);
-	rt2x00_set_field32(&word, TXD_W1_CWMAX, desc->cw_max);
+	rt2x00_set_field32(&word, TXD_W1_HOST_Q_ID, txdesc->queue);
+	rt2x00_set_field32(&word, TXD_W1_AIFSN, txdesc->aifs);
+	rt2x00_set_field32(&word, TXD_W1_CWMIN, txdesc->cw_min);
+	rt2x00_set_field32(&word, TXD_W1_CWMAX, txdesc->cw_max);
 	rt2x00_set_field32(&word, TXD_W1_IV_OFFSET, IEEE80211_HEADER);
 	rt2x00_set_field32(&word, TXD_W1_HW_SEQUENCE, 1);
 	rt2x00_desc_write(txd, 1, word);
 
 	rt2x00_desc_read(txd, 2, &word);
-	rt2x00_set_field32(&word, TXD_W2_PLCP_SIGNAL, desc->signal);
-	rt2x00_set_field32(&word, TXD_W2_PLCP_SERVICE, desc->service);
-	rt2x00_set_field32(&word, TXD_W2_PLCP_LENGTH_LOW, desc->length_low);
-	rt2x00_set_field32(&word, TXD_W2_PLCP_LENGTH_HIGH, desc->length_high);
+	rt2x00_set_field32(&word, TXD_W2_PLCP_SIGNAL, txdesc->signal);
+	rt2x00_set_field32(&word, TXD_W2_PLCP_SERVICE, txdesc->service);
+	rt2x00_set_field32(&word, TXD_W2_PLCP_LENGTH_LOW, txdesc->length_low);
+	rt2x00_set_field32(&word, TXD_W2_PLCP_LENGTH_HIGH, txdesc->length_high);
 	rt2x00_desc_write(txd, 2, word);
 
 	rt2x00_desc_read(txd, 5, &word);
@@ -1268,24 +1268,24 @@ static void rt73usb_write_tx_desc(struct rt2x00_dev *rt2x00dev,
 
 	rt2x00_desc_read(txd, 0, &word);
 	rt2x00_set_field32(&word, TXD_W0_BURST,
-			   test_bit(ENTRY_TXD_BURST, &desc->flags));
+			   test_bit(ENTRY_TXD_BURST, &txdesc->flags));
 	rt2x00_set_field32(&word, TXD_W0_VALID, 1);
 	rt2x00_set_field32(&word, TXD_W0_MORE_FRAG,
-			   test_bit(ENTRY_TXD_MORE_FRAG, &desc->flags));
+			   test_bit(ENTRY_TXD_MORE_FRAG, &txdesc->flags));
 	rt2x00_set_field32(&word, TXD_W0_ACK,
-			   test_bit(ENTRY_TXD_ACK, &desc->flags));
+			   test_bit(ENTRY_TXD_ACK, &txdesc->flags));
 	rt2x00_set_field32(&word, TXD_W0_TIMESTAMP,
-			   test_bit(ENTRY_TXD_REQ_TIMESTAMP, &desc->flags));
+			   test_bit(ENTRY_TXD_REQ_TIMESTAMP, &txdesc->flags));
 	rt2x00_set_field32(&word, TXD_W0_OFDM,
-			   test_bit(ENTRY_TXD_OFDM_RATE, &desc->flags));
-	rt2x00_set_field32(&word, TXD_W0_IFS, desc->ifs);
+			   test_bit(ENTRY_TXD_OFDM_RATE, &txdesc->flags));
+	rt2x00_set_field32(&word, TXD_W0_IFS, txdesc->ifs);
 	rt2x00_set_field32(&word, TXD_W0_RETRY_MODE,
 			   !!(control->flags &
 			      IEEE80211_TXCTL_LONG_RETRY_LIMIT));
 	rt2x00_set_field32(&word, TXD_W0_TKIP_MIC, 0);
 	rt2x00_set_field32(&word, TXD_W0_DATABYTE_COUNT, skbdesc->data_len);
 	rt2x00_set_field32(&word, TXD_W0_BURST2,
-			   test_bit(ENTRY_TXD_BURST, &desc->flags));
+			   test_bit(ENTRY_TXD_BURST, &txdesc->flags));
 	rt2x00_set_field32(&word, TXD_W0_CIPHER_ALG, CIPHER_NONE);
 	rt2x00_desc_write(txd, 0, word);
 }
@@ -1377,37 +1377,57 @@ static int rt73usb_agc_to_rssi(struct rt2x00_dev *rt2x00dev, int rxd_w1)
 	return rt2x00_get_field32(rxd_w1, RXD_W1_RSSI_AGC) * 2 - offset;
 }
 
-static void rt73usb_fill_rxdone(struct data_entry *entry,
-			        struct rxdata_entry_desc *desc)
+static void rt73usb_fill_rxdone(struct queue_entry *entry,
+			        struct rxdone_entry_desc *rxdesc)
 {
-	struct skb_desc *skbdesc = get_skb_desc(entry->skb);
+	struct skb_frame_desc *skbdesc = get_skb_frame_desc(entry->skb);
 	__le32 *rxd = (__le32 *)entry->skb->data;
+	struct ieee80211_hdr *hdr =
+	    (struct ieee80211_hdr *)entry->skb->data + entry->queue->desc_size;
+	int header_size = ieee80211_get_hdrlen(le16_to_cpu(hdr->frame_control));
 	u32 word0;
 	u32 word1;
 
 	rt2x00_desc_read(rxd, 0, &word0);
 	rt2x00_desc_read(rxd, 1, &word1);
 
-	desc->flags = 0;
+	rxdesc->flags = 0;
 	if (rt2x00_get_field32(word0, RXD_W0_CRC_ERROR))
-		desc->flags |= RX_FLAG_FAILED_FCS_CRC;
+		rxdesc->flags |= RX_FLAG_FAILED_FCS_CRC;
 
 	/*
 	 * Obtain the status about this packet.
 	 */
-	desc->signal = rt2x00_get_field32(word1, RXD_W1_SIGNAL);
-	desc->rssi = rt73usb_agc_to_rssi(entry->ring->rt2x00dev, word1);
-	desc->ofdm = rt2x00_get_field32(word0, RXD_W0_OFDM);
-	desc->size = rt2x00_get_field32(word0, RXD_W0_DATABYTE_COUNT);
-	desc->my_bss = !!rt2x00_get_field32(word0, RXD_W0_MY_BSS);
+	rxdesc->signal = rt2x00_get_field32(word1, RXD_W1_SIGNAL);
+	rxdesc->rssi = rt73usb_agc_to_rssi(entry->queue->rt2x00dev, word1);
+	rxdesc->ofdm = rt2x00_get_field32(word0, RXD_W0_OFDM);
+	rxdesc->size = rt2x00_get_field32(word0, RXD_W0_DATABYTE_COUNT);
+	rxdesc->my_bss = !!rt2x00_get_field32(word0, RXD_W0_MY_BSS);
+
+	/*
+	 * The data behind the ieee80211 header must be
+	 * aligned on a 4 byte boundary.
+	 */
+	if (header_size % 4 == 0) {
+		skb_push(entry->skb, 2);
+		memmove(entry->skb->data, entry->skb->data + 2,
+			entry->skb->len - 2);
+	}
 
 	/*
 	 * Set descriptor and data pointer.
 	 */
+	skbdesc->data = entry->skb->data + entry->queue->desc_size;
+	skbdesc->data_len = entry->queue->data_size;
 	skbdesc->desc = entry->skb->data;
-	skbdesc->desc_len = entry->ring->desc_size;
-	skbdesc->data = entry->skb->data + entry->ring->desc_size;
-	skbdesc->data_len = desc->size;
+	skbdesc->desc_len = entry->queue->desc_size;
+
+	/*
+	 * Remove descriptor from skb buffer and trim the whole thing
+	 * down to only contain data.
+	 */
+	skb_pull(entry->skb, skbdesc->desc_len);
+	skb_trim(entry->skb, rxdesc->size);
 }
 
 /*
@@ -1967,9 +1987,9 @@ static int rt73usb_beacon_update(struct ieee80211_hw *hw, struct sk_buff *skb,
 			  struct ieee80211_tx_control *control)
 {
 	struct rt2x00_dev *rt2x00dev = hw->priv;
-	struct skb_desc *desc;
-	struct data_ring *ring;
-	struct data_entry *entry;
+	struct skb_frame_desc *skbdesc;
+	struct data_queue *queue;
+	struct queue_entry *entry;
 	int timeout;
 
 	/*
@@ -1978,25 +1998,25 @@ static int rt73usb_beacon_update(struct ieee80211_hw *hw, struct sk_buff *skb,
 	 * initialization.
 	 */
 	control->queue = IEEE80211_TX_QUEUE_BEACON;
-	ring = rt2x00lib_get_ring(rt2x00dev, control->queue);
-	entry = rt2x00_get_data_entry(ring);
+	queue = rt2x00queue_get_queue(rt2x00dev, control->queue);
+	entry = rt2x00queue_get_entry(queue, Q_INDEX);
 
 	/*
 	 * Add the descriptor in front of the skb.
 	 */
-	skb_push(skb, ring->desc_size);
-	memset(skb->data, 0, ring->desc_size);
+	skb_push(skb, queue->desc_size);
+	memset(skb->data, 0, queue->desc_size);
 
 	/*
 	 * Fill in skb descriptor
 	 */
-	desc = get_skb_desc(skb);
-	desc->desc_len = ring->desc_size;
-	desc->data_len = skb->len - ring->desc_size;
-	desc->desc = skb->data;
-	desc->data = skb->data + ring->desc_size;
-	desc->ring = ring;
-	desc->entry = entry;
+	skbdesc = get_skb_frame_desc(skb);
+	memset(skbdesc, 0, sizeof(*skbdesc));
+	skbdesc->data = skb->data + queue->desc_size;
+	skbdesc->data_len = queue->data_size;
+	skbdesc->desc = skb->data;
+	skbdesc->desc_len = queue->desc_size;
+	skbdesc->entry = entry;
 
 	rt2x00lib_write_tx_desc(rt2x00dev, skb, control);
 
@@ -2057,12 +2077,34 @@ static const struct rt2x00lib_ops rt73usb_rt2x00_ops = {
 	.config			= rt73usb_config,
 };
 
+static const struct data_queue_desc rt73usb_queue_rx = {
+	.entry_num		= RX_ENTRIES,
+	.data_size		= DATA_FRAME_SIZE,
+	.desc_size		= RXD_DESC_SIZE,
+	.priv_size		= sizeof(struct queue_entry_priv_usb_rx),
+};
+
+static const struct data_queue_desc rt73usb_queue_tx = {
+	.entry_num		= TX_ENTRIES,
+	.data_size		= DATA_FRAME_SIZE,
+	.desc_size		= TXD_DESC_SIZE,
+	.priv_size		= sizeof(struct queue_entry_priv_usb_tx),
+};
+
+static const struct data_queue_desc rt73usb_queue_bcn = {
+	.entry_num		= BEACON_ENTRIES,
+	.data_size		= MGMT_FRAME_SIZE,
+	.desc_size		= TXINFO_SIZE,
+	.priv_size		= sizeof(struct queue_entry_priv_usb_tx),
+};
+
 static const struct rt2x00_ops rt73usb_ops = {
 	.name		= KBUILD_MODNAME,
-	.rxd_size	= RXD_DESC_SIZE,
-	.txd_size	= TXD_DESC_SIZE,
 	.eeprom_size	= EEPROM_SIZE,
 	.rf_size	= RF_SIZE,
+	.rx		= &rt73usb_queue_rx,
+	.tx		= &rt73usb_queue_tx,
+	.bcn		= &rt73usb_queue_bcn,
 	.lib		= &rt73usb_rt2x00_ops,
 	.hw		= &rt73usb_mac80211_ops,
 #ifdef CONFIG_RT2X00_LIB_DEBUGFS

drivers/net/wireless/rt2x00/rt73usb.h

@@ -867,6 +867,7 @@ struct hw_pairwise_ta_entry {
  * DMA descriptor defines.
  */
 #define TXD_DESC_SIZE			( 6 * sizeof(__le32) )
+#define TXINFO_SIZE			( 6 * sizeof(__le32) )
 #define RXD_DESC_SIZE			( 6 * sizeof(__le32) )
 
 /*