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| author | Thomas Huehn <thomas@net.t-labs.tu-berlin.de> | 2013-03-04 23:30:06 +0100 |
|---|---|---|
| committer | Johannes Berg <johannes.berg@intel.com> | 2013-03-06 16:36:09 +0100 |
| commit | db8c5ee6924cda3823fac83ee8c4115d1a8248c8 (patch) | |
| tree | 3041ab2e837a66792dec17505e1741c5b7fb3127 /net/mac80211/rc80211_minstrel.c | |
| parent | f744bf81f7501d03f45ba23f9cf947abc3b422c9 (diff) | |
| download | linux-db8c5ee6924cda3823fac83ee8c4115d1a8248c8.tar.gz linux-db8c5ee6924cda3823fac83ee8c4115d1a8248c8.tar.bz2 linux-db8c5ee6924cda3823fac83ee8c4115d1a8248c8.zip | |
mac80211: treat minstrel success probabilities below 10% as implausible
Based on minstrel_ht this patch treats success probabilities below 10% as
implausible values for throughput calculation in minstrel's statistics.
Current throughput per rate with such a low success probability is reset
to 0 MBit/s.
Acked-by: Felix Fietkau <nbd@openwrt.org>
Signed-off-by: Thomas Huehn <thomas@net.t-labs.tu-berlin.de>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Diffstat (limited to 'net/mac80211/rc80211_minstrel.c')
| -rw-r--r-- | net/mac80211/rc80211_minstrel.c | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/net/mac80211/rc80211_minstrel.c b/net/mac80211/rc80211_minstrel.c index 5c0f5327c77f..f8d99a54798f 100644 --- a/net/mac80211/rc80211_minstrel.c +++ b/net/mac80211/rc80211_minstrel.c @@ -92,7 +92,6 @@ minstrel_update_stats(struct minstrel_priv *mp, struct minstrel_sta_info *mi) mr->probability = minstrel_ewma(mr->probability, mr->cur_prob, EWMA_LEVEL); - mr->cur_tp = mr->probability * (1000000 / usecs); } else mr->sample_skipped++; @@ -101,6 +100,12 @@ minstrel_update_stats(struct minstrel_priv *mp, struct minstrel_sta_info *mi) mr->success = 0; mr->attempts = 0; + /* Update throughput per rate, reset thr. below 10% success */ + if (mr->probability < MINSTREL_FRAC(10, 100)) + mr->cur_tp = 0; + else + mr->cur_tp = mr->probability * (1000000 / usecs); + /* Sample less often below the 10% chance of success. * Sample less often above the 95% chance of success. */ if (mr->probability > MINSTREL_FRAC(95, 100) || |