diff options
Diffstat (limited to 'net/mac80211/rc80211_minstrel.c')
| -rw-r--r-- | net/mac80211/rc80211_minstrel.c | 19 |
1 files changed, 14 insertions, 5 deletions
diff --git a/net/mac80211/rc80211_minstrel.c b/net/mac80211/rc80211_minstrel.c index c4a3477812ee..247552a7f6c2 100644 --- a/net/mac80211/rc80211_minstrel.c +++ b/net/mac80211/rc80211_minstrel.c @@ -153,7 +153,7 @@ minstrel_update_rates(struct minstrel_priv *mp, struct minstrel_sta_info *mi) } /* -* Recalculate success probabilities and counters for a given rate using EWMA +* Recalculate statistics and counters of a given rate */ void minstrel_calc_rate_stats(struct minstrel_rate_stats *mrs) @@ -161,11 +161,20 @@ minstrel_calc_rate_stats(struct minstrel_rate_stats *mrs) if (unlikely(mrs->attempts > 0)) { mrs->sample_skipped = 0; mrs->cur_prob = MINSTREL_FRAC(mrs->success, mrs->attempts); - if (unlikely(!mrs->att_hist)) + if (unlikely(!mrs->att_hist)) { mrs->prob_ewma = mrs->cur_prob; - else + } else { + /* update exponential weighted moving variance */ + mrs->prob_ewmsd = minstrel_ewmsd(mrs->prob_ewmsd, + mrs->cur_prob, + mrs->prob_ewma, + EWMA_LEVEL); + + /*update exponential weighted moving avarage */ mrs->prob_ewma = minstrel_ewma(mrs->prob_ewma, - mrs->cur_prob, EWMA_LEVEL); + mrs->cur_prob, + EWMA_LEVEL); + } mrs->att_hist += mrs->attempts; mrs->succ_hist += mrs->success; } else { @@ -193,7 +202,7 @@ minstrel_update_stats(struct minstrel_priv *mp, struct minstrel_sta_info *mi) struct minstrel_rate_stats *mrs = &mi->r[i].stats; struct minstrel_rate_stats *tmp_mrs = &mi->r[tmp_prob_rate].stats; - /* Update success probabilities per rate */ + /* Update statistics of success probability per rate */ minstrel_calc_rate_stats(mrs); /* Sample less often below the 10% chance of success. |