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mac80211: update minstrel_ht sample rate when probe is set 

Waiting until the status is received can cause the same rate to be
probed multiple times consecutively.

Cc: Felix Fietkau <nbd@openwrt.org>
Signed-off-by: Daniel Halperin <dhalperi@cs.washington.edu>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Daniel Halperin 2011-03-09 03:10:18 -08:00 committed by John W. Linville
parent 23ffaa89df
commit 8d5eab5aa6
1 changed files with 5 additions and 10 deletions
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15
net/mac80211/rc80211_minstrel_ht.c
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@ -415,10 +415,8 @@ minstrel_ht_tx_status(void *priv, struct ieee80211_supported_band *sband,
mi->sample_count--;
}
if (info->flags & IEEE80211_TX_CTL_RATE_CTRL_PROBE) {
if (info->flags & IEEE80211_TX_CTL_RATE_CTRL_PROBE)
mi->sample_packets += info->status.ampdu_len;
minstrel_next_sample_idx(mi);
}
for (i = 0; !last; i++) {
last = (i == IEEE80211_TX_MAX_RATES - 1) ||
@ -551,13 +549,14 @@ minstrel_get_sample_rate(struct minstrel_priv *mp, struct minstrel_ht_sta *mi)
sample_idx = sample_table[mg->column][mg->index];
mr = &mg->rates[sample_idx];
sample_idx += mi->sample_group * MCS_GROUP_RATES;
minstrel_next_sample_idx(mi);
/*
* When not using MRR, do not sample if the probability is already
* higher than 95% to avoid wasting airtime
*/
if (!mp->has_mrr && (mr->probability > MINSTREL_FRAC(95, 100)))
goto next;
return -1;
/*
* Make sure that lower rates get sampled only occasionally,
@ -566,17 +565,13 @@ minstrel_get_sample_rate(struct minstrel_priv *mp, struct minstrel_ht_sta *mi)
if (minstrel_get_duration(sample_idx) >
minstrel_get_duration(mi->max_tp_rate)) {
if (mr->sample_skipped < 20)
goto next;
return -1;
if (mi->sample_slow++ > 2)
goto next;
return -1;
}
return sample_idx;
next:
minstrel_next_sample_idx(mi);
return -1;
}
static void