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ath9k: fix handling of rate control probe frames

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The ath9k aggregation code was already checking the rate control probe flag
to prevent starting an aggregate frame with a sampling rate. What was missing
was closing an aggregate before adding a probing frame to it.
Without that, rate control cannot have precise control over probing, which
delays using faster rates when the channel conditions improve.

Signed-off-by: Felix Fietkau <nbd@openwrt.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Felix Fietkau 2010-10-21 02:47:24 +02:00 committed by John W. Linville
parent 0845735e2d
commit 0299a50abb
1 changed files with 6 additions and 0 deletions
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6
drivers/net/wireless/ath/ath9k/xmit.c
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@ -673,6 +673,7 @@ static enum ATH_AGGR_STATUS ath_tx_form_aggr(struct ath_softc *sc,
u16 aggr_limit = 0, al = 0, bpad = 0,
al_delta, h_baw = tid->baw_size / 2;
enum ATH_AGGR_STATUS status = ATH_AGGR_DONE;
struct ieee80211_tx_info *tx_info;
bf_first = list_first_entry(&tid->buf_q, struct ath_buf, list);
@ -699,6 +700,11 @@ static enum ATH_AGGR_STATUS ath_tx_form_aggr(struct ath_softc *sc,
break;
}
tx_info = IEEE80211_SKB_CB(bf->bf_mpdu);
if (nframes && ((tx_info->flags & IEEE80211_TX_CTL_RATE_CTRL_PROBE) ||
!(tx_info->control.rates[0].flags & IEEE80211_TX_RC_MCS)))
break;
/* do not exceed subframe limit */
if (nframes >= min((int)h_baw, ATH_AMPDU_SUBFRAME_DEFAULT)) {
status = ATH_AGGR_LIMITED;