rt2x00: Don't call ieee80211_get_tx_rate for MCS rates

ieee80211_get_tx_rate is not valid for HT rates. Hence, restructure the
TX desciptor creation to be aware of MCS rates. The generic TX desciptor
creation now cares about the rate_mode (CCK, OFDM, MCS, GF).

As a result, ieee80211_get_tx_rate gets only called for legacy rates.

Acked-by: Gertjan van Wingerde <gwingerde@gmail.com>
Signed-off-by: Helmut Schaa <helmut.schaa@googlemail.com>
Signed-off-by: Ivo van Doorn <IvDoorn@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

diff --git a/drivers/net/wireless/rt2x00/rt2x00ht.c b/drivers/net/wireless/rt2x00/rt2x00ht.c
index 78a0e73..ae1219d 100644 (file)
--- a/drivers/net/wireless/rt2x00/rt2x00ht.c
+++ b/drivers/net/wireless/rt2x00/rt2x00ht.c
@@ -78,14 +78,6 @@ void rt2x00ht_create_tx_descriptor(struct queue_entry *entry,
                __set_bit(ENTRY_TXD_HT_AMPDU, &txdesc->flags);
 
        /*
-        * Determine HT Mix/Greenfield rate mode
-        */
-       if (txrate->flags & IEEE80211_TX_RC_MCS)
-               txdesc->rate_mode = RATE_MODE_HT_MIX;
-       if (txrate->flags & IEEE80211_TX_RC_GREEN_FIELD)
-               txdesc->rate_mode = RATE_MODE_HT_GREENFIELD;
-
-       /*
         * Set 40Mhz mode if necessary (for legacy rates this will
         * duplicate the frame to both channels).
         */

diff --git a/drivers/net/wireless/rt2x00/rt2x00queue.c b/drivers/net/wireless/rt2x00/rt2x00queue.c
index 6300cf3..f06b5c7 100644 (file)
--- a/drivers/net/wireless/rt2x00/rt2x00queue.c
+++ b/drivers/net/wireless/rt2x00/rt2x00queue.c
@@ -321,9 +321,9 @@ static void rt2x00queue_create_tx_descriptor(struct queue_entry *entry,
        struct rt2x00_dev *rt2x00dev = entry->queue->rt2x00dev;
        struct ieee80211_tx_info *tx_info = IEEE80211_SKB_CB(entry->skb);
        struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)entry->skb->data;
-       struct ieee80211_rate *rate =
-           ieee80211_get_tx_rate(rt2x00dev->hw, tx_info);
-       const struct rt2x00_rate *hwrate;
+       struct ieee80211_tx_rate *txrate = &tx_info->control.rates[0];
+       struct ieee80211_rate *rate;
+       const struct rt2x00_rate *hwrate = NULL;
 
        memset(txdesc, 0, sizeof(*txdesc));
 
@@ -390,10 +390,18 @@ static void rt2x00queue_create_tx_descriptor(struct queue_entry *entry,
        /*
         * Determine rate modulation.
         */
-       hwrate = rt2x00_get_rate(rate->hw_value);
-       txdesc->rate_mode = RATE_MODE_CCK;
-       if (hwrate->flags & DEV_RATE_OFDM)
-               txdesc->rate_mode = RATE_MODE_OFDM;
+       if (txrate->flags & IEEE80211_TX_RC_GREEN_FIELD)
+               txdesc->rate_mode = RATE_MODE_HT_GREENFIELD;
+       else if (txrate->flags & IEEE80211_TX_RC_MCS)
+               txdesc->rate_mode = RATE_MODE_HT_MIX;
+       else {
+               rate = ieee80211_get_tx_rate(rt2x00dev->hw, tx_info);
+               hwrate = rt2x00_get_rate(rate->hw_value);
+               if (hwrate->flags & DEV_RATE_OFDM)
+                       txdesc->rate_mode = RATE_MODE_OFDM;
+               else
+                       txdesc->rate_mode = RATE_MODE_CCK;
+       }
 
        /*
         * Apply TX descriptor handling by components