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ath9k: Handle different TX and RX streams properly.

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This patch fixes an issue when the TX and RX streams are different.

Signed-off-by: Senthil Balasubramanian <senthilkumar@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Senthil Balasubramanian 2009-06-24 18:56:42 +05:30 committed by John W. Linville
parent e5f0921a95
commit 140add2135
1 changed files with 14 additions and 12 deletions
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26
drivers/net/wireless/ath/ath9k/main.c
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@ -889,6 +889,7 @@ static void setup_ht_cap(struct ath_softc *sc,
{
#define ATH9K_HT_CAP_MAXRXAMPDU_65536 0x3 /* 2 ^ 16 */
#define ATH9K_HT_CAP_MPDUDENSITY_8 0x6 /* 8 usec */
u8 tx_streams, rx_streams;
ht_info->ht_supported = true;
ht_info->cap = IEEE80211_HT_CAP_SUP_WIDTH_20_40 |
@ -901,21 +902,22 @@ static void setup_ht_cap(struct ath_softc *sc,
/* set up supported mcs set */
memset(&ht_info->mcs, 0, sizeof(ht_info->mcs));
tx_streams = !(sc->tx_chainmask & (sc->tx_chainmask - 1)) ? 1 : 2;
rx_streams = !(sc->rx_chainmask & (sc->rx_chainmask - 1)) ? 1 : 2;
switch(sc->rx_chainmask) {
case 1:
ht_info->mcs.rx_mask[0] = 0xff;
break;
case 3:
case 5:
case 7:
default:
ht_info->mcs.rx_mask[0] = 0xff;
ht_info->mcs.rx_mask[1] = 0xff;
break;
if (tx_streams != rx_streams) {
DPRINTF(sc, ATH_DBG_CONFIG, "TX streams %d, RX streams: %d\n",
tx_streams, rx_streams);
ht_info->mcs.tx_params |= IEEE80211_HT_MCS_TX_RX_DIFF;
ht_info->mcs.tx_params |= ((tx_streams - 1) <<
IEEE80211_HT_MCS_TX_MAX_STREAMS_SHIFT);
}
ht_info->mcs.tx_params = IEEE80211_HT_MCS_TX_DEFINED;
ht_info->mcs.rx_mask[0] = 0xff;
if (rx_streams >= 2)
ht_info->mcs.rx_mask[1] = 0xff;
ht_info->mcs.tx_params |= IEEE80211_HT_MCS_TX_DEFINED;
}
static void ath9k_bss_assoc_info(struct ath_softc *sc,