AcoSail/kernel_optimize_test
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rt2x00: Don't call ieee80211_get_tx_rate for MCS rates

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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>
This commit is contained in:
Helmut Schaa 2011-03-03 19:43:49 +01:00 committed by John W. Linville
parent 2517794b70
commit 55b585e290
2 changed files with 15 additions and 15 deletions
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8
drivers/net/wireless/rt2x00/rt2x00ht.c
View File

@ -77,14 +77,6 @@ void rt2x00ht_create_tx_descriptor(struct queue_entry *entry,
!(tx_info->flags & IEEE80211_TX_CTL_RATE_CTRL_PROBE))
__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).

22
drivers/net/wireless/rt2x00/rt2x00queue.c
View File

@ -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