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staging: brcm80211: corrected tx status feedback for non AMPDU packets 

Code still contained a 'FIXME' label that said tx status feedback (consumed by
the rate control algorithm) was not yet taking RTS/CTS into account.

Signed-off-by: Roland Vossen <rvossen@broadcom.com>
Reviewed-by: Arend van Spriel <arend@broadcom.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
Roland Vossen 2011-06-29 16:46:47 -07:00 committed by Greg Kroah-Hartman
parent b15c75830d
commit 94daaf708b
1 changed files with 23 additions and 7 deletions
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30
drivers/staging/brcm80211/brcmsmac/main.c
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@ -4370,8 +4370,18 @@ brcms_c_dotxstatus(struct brcms_c_info *wlc, tx_status_t *txs, u32 frm_tx2)
if (!lastframe) {
wiphy_err(wlc->wiphy, "Not last frame!\n");
} else {
u16 sfbl, lfbl;
ieee80211_tx_info_clear_status(tx_info);
/*
* Set information to be consumed by Minstrel ht.
*
* The "fallback limit" is the number of tx attempts a given
* MPDU is sent at the "primary" rate. Tx attempts beyond that
* limit are sent at the "secondary" rate.
* A 'short frame' does not exceed RTS treshold.
*/
u16 sfbl, /* Short Frame Rate Fallback Limit */
lfbl, /* Long Frame Rate Fallback Limit */
fbl;
if (queue < AC_COUNT) {
sfbl = WLC_WME_RETRY_SFB_GET(wlc, wme_fifo2ac[queue]);
lfbl = WLC_WME_RETRY_LFB_GET(wlc, wme_fifo2ac[queue]);
@ -4381,14 +4391,20 @@ brcms_c_dotxstatus(struct brcms_c_info *wlc, tx_status_t *txs, u32 frm_tx2)
}
txrate = tx_info->status.rates;
/* FIXME: this should use a combination of sfbl, lfbl depending on frame length and RTS setting */
if ((tx_frame_count > sfbl) && (txrate[1].idx >= 0)) {
if (txrate[0].flags & IEEE80211_TX_RC_USE_RTS_CTS)
fbl = lfbl;
else
fbl = sfbl;
ieee80211_tx_info_clear_status(tx_info);
if ((tx_frame_count > fbl) && (txrate[1].idx >= 0)) {
/* rate selection requested a fallback rate and we used it */
txrate->count = lfbl;
txrate[1].count = tx_frame_count - lfbl;
txrate[0].count = fbl;
txrate[1].count = tx_frame_count - fbl;
} else {
/* rate selection did not request fallback rate, or we didn't need it */
txrate->count = tx_frame_count;
txrate[0].count = tx_frame_count;
/* rc80211_minstrel.c:minstrel_tx_status() expects unused rates to be marked with idx = -1 */
txrate[1].idx = -1;
txrate[1].count = 0;