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mwl8k: properly set receive status rate index on 5 GHz receive

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The mwl8k firmware uses indices into the 2.4 GHz band rate table for
the receive descriptor channel field even if the packet was received
on a 5 GHz channel, while mac80211 expects an index into the 5 GHz
band rate table when packets are received on the 5 GHz band, which
presents a mismatch as the 5 GHz band rate table lacks the five
non-OFDM rates that the 2.4 GHz rate table starts with.

To handle this properly, we need to substract 5 from the rate index
field if the packet was received on a 5 GHz channel (and was not
received at an MCS rate).

Signed-off-by: Lennert Buytenhek <buytenh@marvell.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Lennert Buytenhek 2010-01-12 13:48:56 +01:00 committed by John W. Linville
parent 4eae9edd38
commit 854783444b
1 changed files with 14 additions and 2 deletions
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16
drivers/net/wireless/mwl8k.c
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@ -759,7 +759,13 @@ mwl8k_rxd_8366_ap_process(void *_rxd, struct ieee80211_rx_status *status,
}
}
status->band = IEEE80211_BAND_2GHZ;
if (rxd->channel > 14) {
status->band = IEEE80211_BAND_5GHZ;
if (!(status->flag & RX_FLAG_HT))
status->rate_idx -= 5;
} else {
status->band = IEEE80211_BAND_2GHZ;
}
status->freq = ieee80211_channel_to_frequency(rxd->channel);
*qos = rxd->qos_control;
@ -850,7 +856,13 @@ mwl8k_rxd_sta_process(void *_rxd, struct ieee80211_rx_status *status,
if (rate_info & MWL8K_STA_RATE_INFO_MCS_FORMAT)
status->flag |= RX_FLAG_HT;
status->band = IEEE80211_BAND_2GHZ;
if (rxd->channel > 14) {
status->band = IEEE80211_BAND_5GHZ;
if (!(status->flag & RX_FLAG_HT))
status->rate_idx -= 5;
} else {
status->band = IEEE80211_BAND_2GHZ;
}
status->freq = ieee80211_channel_to_frequency(rxd->channel);
*qos = rxd->qos_control;