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path: root/drivers/net/wireless/rt2x00/rt2x00ht.c
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Diffstat (limited to 'drivers/net/wireless/rt2x00/rt2x00ht.c')
-rw-r--r--drivers/net/wireless/rt2x00/rt2x00ht.c25
1 files changed, 22 insertions, 3 deletions
diff --git a/drivers/net/wireless/rt2x00/rt2x00ht.c b/drivers/net/wireless/rt2x00/rt2x00ht.c
index c004cd3a8847..c637bcaec5f8 100644
--- a/drivers/net/wireless/rt2x00/rt2x00ht.c
+++ b/drivers/net/wireless/rt2x00/rt2x00ht.c
@@ -54,6 +54,17 @@ void rt2x00ht_create_tx_descriptor(struct queue_entry *entry,
*/
if (txrate->flags & IEEE80211_TX_RC_MCS) {
txdesc->mcs = txrate->idx;
+
+ /*
+ * MIMO PS should be set to 1 for STA's using dynamic SM PS
+ * when using more then one tx stream (>MCS7).
+ */
+ if (tx_info->control.sta && txdesc->mcs > 7 &&
+ ((tx_info->control.sta->ht_cap.cap &
+ IEEE80211_HT_CAP_SM_PS) >>
+ IEEE80211_HT_CAP_SM_PS_SHIFT) ==
+ WLAN_HT_CAP_SM_PS_DYNAMIC)
+ __set_bit(ENTRY_TXD_HT_MIMO_PS, &txdesc->flags);
} else {
txdesc->mcs = rt2x00_get_rate_mcs(hwrate->mcs);
if (txrate->flags & IEEE80211_TX_RC_USE_SHORT_PREAMBLE)
@@ -62,9 +73,11 @@ void rt2x00ht_create_tx_descriptor(struct queue_entry *entry,
/*
- * Convert flags
+ * This frame is eligible for an AMPDU, however, don't aggregate
+ * frames that are intended to probe a specific tx rate.
*/
- if (tx_info->flags & IEEE80211_TX_CTL_AMPDU)
+ if (tx_info->flags & IEEE80211_TX_CTL_AMPDU &&
+ !(tx_info->flags & IEEE80211_TX_CTL_RATE_CTRL_PROBE))
__set_bit(ENTRY_TXD_HT_AMPDU, &txdesc->flags);
/*
@@ -74,7 +87,13 @@ void rt2x00ht_create_tx_descriptor(struct queue_entry *entry,
txdesc->rate_mode = RATE_MODE_HT_MIX;
if (txrate->flags & IEEE80211_TX_RC_GREEN_FIELD)
txdesc->rate_mode = RATE_MODE_HT_GREENFIELD;
- if (txrate->flags & IEEE80211_TX_RC_40_MHZ_WIDTH)
+
+ /*
+ * Set 40Mhz mode if necessary (for legacy rates this will
+ * duplicate the frame to both channels).
+ */
+ if (txrate->flags & IEEE80211_TX_RC_40_MHZ_WIDTH ||
+ txrate->flags & IEEE80211_TX_RC_DUP_DATA)
__set_bit(ENTRY_TXD_HT_BW_40, &txdesc->flags);
if (txrate->flags & IEEE80211_TX_RC_SHORT_GI)
__set_bit(ENTRY_TXD_HT_SHORT_GI, &txdesc->flags);