diff options
| author | Thomas Huehn <thomas@net.t-labs.tu-berlin.de> | 2013-03-04 23:30:02 +0100 |
|---|---|---|
| committer | Johannes Berg <johannes.berg@intel.com> | 2013-03-06 16:36:07 +0100 |
| commit | c8ca8c2f933a516b5f4586d7dc6055b72107f246 (patch) | |
| tree | 87a1285588a6dcec2926e804e52fdc4d9bf8fba6 /net/mac80211/rc80211_minstrel.c | |
| parent | mac80211: merge EWMA calculation of minstrel_ht and minstrel (diff) | |
| download | linux-c8ca8c2f933a516b5f4586d7dc6055b72107f246.tar.xz linux-c8ca8c2f933a516b5f4586d7dc6055b72107f246.zip | |
mac80211: merge value scaling macros of minstrel_ht and minstrel
Both minstrel versions use individual ways to scale up integer values
to perform calculations. Merge minstrel_ht's scaling macros into
minstrels header file and use them in both minstrel versions.
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 | 9 |
1 files changed, 4 insertions, 5 deletions
diff --git a/net/mac80211/rc80211_minstrel.c b/net/mac80211/rc80211_minstrel.c index d78f629179c7..c9b990237991 100644 --- a/net/mac80211/rc80211_minstrel.c +++ b/net/mac80211/rc80211_minstrel.c @@ -86,10 +86,8 @@ minstrel_update_stats(struct minstrel_priv *mp, struct minstrel_sta_info *mi) if (!usecs) usecs = 1000000; - /* To avoid rounding issues, probabilities scale from 0 (0%) - * to 18000 (100%) */ if (mr->attempts) { - mr->cur_prob = (mr->success * 18000) / mr->attempts; + mr->cur_prob = MINSTREL_FRAC(mr->success, mr->attempts); mr->succ_hist += mr->success; mr->att_hist += mr->attempts; mr->probability = minstrel_ewma(mr->probability, @@ -105,7 +103,8 @@ minstrel_update_stats(struct minstrel_priv *mp, struct minstrel_sta_info *mi) /* Sample less often below the 10% chance of success. * Sample less often above the 95% chance of success. */ - if ((mr->probability > 17100) || (mr->probability < 1800)) { + if (mr->probability > MINSTREL_FRAC(95, 100) || + mr->probability < MINSTREL_FRAC(10, 100)) { mr->adjusted_retry_count = mr->retry_count >> 1; if (mr->adjusted_retry_count > 2) mr->adjusted_retry_count = 2; @@ -300,7 +299,7 @@ minstrel_get_rate(void *priv, struct ieee80211_sta *sta, /* If we're not using MRR and the sampling rate already * has a probability of >95%, we shouldn't be attempting * to use it, as this only wastes precious airtime */ - if (!mrr && sample && (mi->r[ndx].probability > 17100)) + if (!mrr && sample && (mi->r[ndx].probability > MINSTREL_FRAC(95, 100))) ndx = mi->max_tp_rate; ar[0].idx = mi->r[ndx].rix; |