diff options
| author | Felix Fietkau <nbd@openwrt.org> | 2013-03-02 21:20:13 +0100 |
|---|---|---|
| committer | Johannes Berg <johannes.berg@intel.com> | 2013-03-06 16:35:52 +0100 |
| commit | a299c6d591f8f6abfe42e77d70ed688067748135 (patch) | |
| tree | 6d0d49842ab545badf31240ff2beb254d579e0ab /net/mac80211/rc80211_minstrel_ht.c | |
| parent | ed97a13c540eb8fdbb6250eaa6471a4263204af8 (diff) | |
| download | linux-a299c6d591f8f6abfe42e77d70ed688067748135.tar.bz2 | |
mac80211/minstrel_ht: improve max_prob_rate selection
max_prob_rate should be selected to be very reliable, however limiting
it to single-stream on 3-stream devices is a bit much.
Allow max_prob_rate to use one stream less than the max_tp_rate.
Signed-off-by: Felix Fietkau <nbd@openwrt.org>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Diffstat (limited to 'net/mac80211/rc80211_minstrel_ht.c')
| -rw-r--r-- | net/mac80211/rc80211_minstrel_ht.c | 27 |
1 files changed, 19 insertions, 8 deletions
diff --git a/net/mac80211/rc80211_minstrel_ht.c b/net/mac80211/rc80211_minstrel_ht.c index 0b5cdd94d4f0..6c735e0d66a3 100644 --- a/net/mac80211/rc80211_minstrel_ht.c +++ b/net/mac80211/rc80211_minstrel_ht.c @@ -246,6 +246,7 @@ minstrel_ht_update_stats(struct minstrel_priv *mp, struct minstrel_ht_sta *mi) struct minstrel_rate_stats *mr; int cur_prob, cur_prob_tp, cur_tp, cur_tp2; int group, i, index; + int prob_max_streams = 1; if (mi->ampdu_packets > 0) { mi->avg_ampdu_len = minstrel_ewma(mi->avg_ampdu_len, @@ -323,20 +324,13 @@ minstrel_ht_update_stats(struct minstrel_priv *mp, struct minstrel_ht_sta *mi) if (!mg->supported) continue; - mr = minstrel_get_ratestats(mi, mg->max_prob_rate); - if (cur_prob_tp < mr->cur_tp && - minstrel_mcs_groups[group].streams == 1) { - mi->max_prob_rate = mg->max_prob_rate; - cur_prob = mr->cur_prob; - cur_prob_tp = mr->cur_tp; - } - mr = minstrel_get_ratestats(mi, mg->max_tp_rate); if (cur_tp < mr->cur_tp) { mi->max_tp_rate2 = mi->max_tp_rate; cur_tp2 = cur_tp; mi->max_tp_rate = mg->max_tp_rate; cur_tp = mr->cur_tp; + prob_max_streams = minstrel_mcs_groups[group].streams - 1; } mr = minstrel_get_ratestats(mi, mg->max_tp_rate2); @@ -346,6 +340,23 @@ minstrel_ht_update_stats(struct minstrel_priv *mp, struct minstrel_ht_sta *mi) } } + if (prob_max_streams < 1) + prob_max_streams = 1; + + for (group = 0; group < ARRAY_SIZE(minstrel_mcs_groups); group++) { + mg = &mi->groups[group]; + if (!mg->supported) + continue; + mr = minstrel_get_ratestats(mi, mg->max_prob_rate); + if (cur_prob_tp < mr->cur_tp && + minstrel_mcs_groups[group].streams <= prob_max_streams) { + mi->max_prob_rate = mg->max_prob_rate; + cur_prob = mr->cur_prob; + cur_prob_tp = mr->cur_tp; + } + } + + mi->stats_update = jiffies; } |