rt2x00: Remove ENTRY_TXD_OFDM_RATE

The flag ENTRY_TXD_OFDM_RATE isn't flexible enough
to indicate which rate modulation should be used for
a frame. This will become a problem when 11n support
is added.

Remove the flag and replace it with an enum value which
can better indicate the exact rate modulation.
Signed-off-by: NIvo van Doorn <IvDoorn@gmail.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

drivers/net/wireless/rt2x00/rt2500pci.c

@@ -1233,7 +1233,7 @@ static void rt2500pci_write_tx_desc(struct rt2x00_dev *rt2x00dev,
 	rt2x00_set_field32(&word, TXD_W0_TIMESTAMP,
 			   test_bit(ENTRY_TXD_REQ_TIMESTAMP, &txdesc->flags));
 	rt2x00_set_field32(&word, TXD_W0_OFDM,
-			   test_bit(ENTRY_TXD_OFDM_RATE, &txdesc->flags));
+			   (txdesc->rate_mode == RATE_MODE_OFDM));
 	rt2x00_set_field32(&word, TXD_W0_CIPHER_OWNER, 1);
 	rt2x00_set_field32(&word, TXD_W0_IFS, txdesc->ifs);
 	rt2x00_set_field32(&word, TXD_W0_RETRY_MODE,

drivers/net/wireless/rt2x00/rt2500usb.c

@@ -1217,7 +1217,7 @@ static void rt2500usb_write_tx_desc(struct rt2x00_dev *rt2x00dev,
 	rt2x00_set_field32(&word, TXD_W0_TIMESTAMP,
 			   test_bit(ENTRY_TXD_REQ_TIMESTAMP, &txdesc->flags));
 	rt2x00_set_field32(&word, TXD_W0_OFDM,
-			   test_bit(ENTRY_TXD_OFDM_RATE, &txdesc->flags));
+			   (txdesc->rate_mode == RATE_MODE_OFDM));
 	rt2x00_set_field32(&word, TXD_W0_NEW_SEQ,
 			   test_bit(ENTRY_TXD_FIRST_FRAGMENT, &txdesc->flags));
 	rt2x00_set_field32(&word, TXD_W0_IFS, txdesc->ifs);

drivers/net/wireless/rt2x00/rt2x00queue.c

@@ -314,9 +314,13 @@ static void rt2x00queue_create_tx_descriptor(struct queue_entry *entry,
 	} else
 		txdesc->ifs = IFS_SIFS;
 
+	/*
+	 * Determine rate modulation.
+	 */
 	hwrate = rt2x00_get_rate(rate->hw_value);
+	txdesc->rate_mode = RATE_MODE_CCK;
 	if (hwrate->flags & DEV_RATE_OFDM)
-		__set_bit(ENTRY_TXD_OFDM_RATE, &txdesc->flags);
+		txdesc->rate_mode = RATE_MODE_OFDM;
 
 	/*
 	 * Apply TX descriptor handling by components

drivers/net/wireless/rt2x00/rt2x00queue.h

@@ -222,7 +222,6 @@ struct txdone_entry_desc {
  *
  * @ENTRY_TXD_RTS_FRAME: This frame is a RTS frame.
  * @ENTRY_TXD_CTS_FRAME: This frame is a CTS-to-self frame.
- * @ENTRY_TXD_OFDM_RATE: This frame is send out with an OFDM rate.
  * @ENTRY_TXD_GENERATE_SEQ: This frame requires sequence counter.
  * @ENTRY_TXD_FIRST_FRAGMENT: This is the first frame.
  * @ENTRY_TXD_MORE_FRAG: This frame is followed by another fragment.
@@ -238,7 +237,6 @@ struct txdone_entry_desc {
 enum txentry_desc_flags {
 	ENTRY_TXD_RTS_FRAME,
 	ENTRY_TXD_CTS_FRAME,
-	ENTRY_TXD_OFDM_RATE,
 	ENTRY_TXD_GENERATE_SEQ,
 	ENTRY_TXD_FIRST_FRAGMENT,
 	ENTRY_TXD_MORE_FRAG,
@@ -263,6 +261,7 @@ enum txentry_desc_flags {
  * @length_low: PLCP length low word.
  * @signal: PLCP signal.
  * @service: PLCP service.
+ * @rate_mode: Rate mode (See @enum rate_modulation).
  * @retry_limit: Max number of retries.
  * @aifs: AIFS value.
  * @ifs: IFS value.
@@ -282,6 +281,8 @@ struct txentry_desc {
 	u16 signal;
 	u16 service;
 
+	u16 rate_mode;
+
 	short retry_limit;
 	short aifs;
 	short ifs;

drivers/net/wireless/rt2x00/rt2x00reg.h

@@ -124,6 +124,16 @@ enum cipher {
 	CIPHER_MAX = 4,
 };
 
+/*
+ * Rate modulations
+ */
+enum rate_modulation {
+	RATE_MODE_CCK = 0,
+	RATE_MODE_OFDM = 1,
+	RATE_MODE_HT_MIX = 2,
+	RATE_MODE_HT_GREENFIELD = 3,
+};
+
 /*
  * Register handlers.
  * We store the position of a register field inside a field structure,

drivers/net/wireless/rt2x00/rt61pci.c

@@ -1847,7 +1847,7 @@ static void rt61pci_write_tx_desc(struct rt2x00_dev *rt2x00dev,
 	rt2x00_set_field32(&word, TXD_W0_TIMESTAMP,
 			   test_bit(ENTRY_TXD_REQ_TIMESTAMP, &txdesc->flags));
 	rt2x00_set_field32(&word, TXD_W0_OFDM,
-			   test_bit(ENTRY_TXD_OFDM_RATE, &txdesc->flags));
+			   (txdesc->rate_mode == RATE_MODE_OFDM));
 	rt2x00_set_field32(&word, TXD_W0_IFS, txdesc->ifs);
 	rt2x00_set_field32(&word, TXD_W0_RETRY_MODE,
 			   test_bit(ENTRY_TXD_RETRY_MODE, &txdesc->flags));

drivers/net/wireless/rt2x00/rt73usb.c

@@ -1498,7 +1498,7 @@ static void rt73usb_write_tx_desc(struct rt2x00_dev *rt2x00dev,
 	rt2x00_set_field32(&word, TXD_W0_TIMESTAMP,
 			   test_bit(ENTRY_TXD_REQ_TIMESTAMP, &txdesc->flags));
 	rt2x00_set_field32(&word, TXD_W0_OFDM,
-			   test_bit(ENTRY_TXD_OFDM_RATE, &txdesc->flags));
+			   (txdesc->rate_mode == RATE_MODE_OFDM));
 	rt2x00_set_field32(&word, TXD_W0_IFS, txdesc->ifs);
 	rt2x00_set_field32(&word, TXD_W0_RETRY_MODE,
 			   test_bit(ENTRY_TXD_RETRY_MODE, &txdesc->flags));