diff options
Diffstat (limited to 'package/kernel/mac80211/patches/343-mac80211-minstrel_ht-improve-sample-rate-skip-logic.patch')
| -rw-r--r-- | package/kernel/mac80211/patches/343-mac80211-minstrel_ht-improve-sample-rate-skip-logic.patch | 77 |
1 files changed, 0 insertions, 77 deletions
diff --git a/package/kernel/mac80211/patches/343-mac80211-minstrel_ht-improve-sample-rate-skip-logic.patch b/package/kernel/mac80211/patches/343-mac80211-minstrel_ht-improve-sample-rate-skip-logic.patch deleted file mode 100644 index 55ff817009..0000000000 --- a/package/kernel/mac80211/patches/343-mac80211-minstrel_ht-improve-sample-rate-skip-logic.patch +++ /dev/null @@ -1,77 +0,0 @@ -From: Felix Fietkau <nbd@openwrt.org> -Date: Thu, 3 Mar 2016 23:20:06 +0100 -Subject: [PATCH] mac80211: minstrel_ht: improve sample rate skip logic - -There were a few issues that were slowing down the process of finding -the optimal rate, especially on devices with multi-rate retry -limitations: - -When max_tp_rate[0] was slower than max_tp_rate[1], the code did not -sample max_tp_rate[1], which would often allow it to switch places with -max_tp_rate[0] (e.g. if only the first sampling attempts were bad, but the -rate is otherwise good). - -Also, sample attempts of rates between max_tp_rate[0] and [1] were being -ignored in this case, because the code only checked if the rate was -slower than [1]. - -Fix this by checking against the fastest / second fastest max_tp_rate -instead of assuming a specific order between the two. - -In my tests this patch significantly reduces the time until minstrel_ht -finds the optimal rate right after assoc - -Signed-off-by: Felix Fietkau <nbd@openwrt.org> ---- - ---- a/net/mac80211/rc80211_minstrel_ht.c -+++ b/net/mac80211/rc80211_minstrel_ht.c -@@ -958,6 +958,7 @@ minstrel_get_sample_rate(struct minstrel - struct minstrel_rate_stats *mrs; - struct minstrel_mcs_group_data *mg; - unsigned int sample_dur, sample_group, cur_max_tp_streams; -+ int tp_rate1, tp_rate2; - int sample_idx = 0; - - if (mi->sample_wait > 0) { -@@ -979,14 +980,22 @@ minstrel_get_sample_rate(struct minstrel - mrs = &mg->rates[sample_idx]; - sample_idx += sample_group * MCS_GROUP_RATES; - -+ /* Set tp_rate1, tp_rate2 to the highest / second highest max_tp_rate */ -+ if (minstrel_get_duration(mi->max_tp_rate[0]) > -+ minstrel_get_duration(mi->max_tp_rate[1])) { -+ tp_rate1 = mi->max_tp_rate[1]; -+ tp_rate2 = mi->max_tp_rate[0]; -+ } else { -+ tp_rate1 = mi->max_tp_rate[0]; -+ tp_rate2 = mi->max_tp_rate[1]; -+ } -+ - /* - * Sampling might add some overhead (RTS, no aggregation) -- * to the frame. Hence, don't use sampling for the currently -- * used rates. -+ * to the frame. Hence, don't use sampling for the highest currently -+ * used highest throughput or probability rate. - */ -- if (sample_idx == mi->max_tp_rate[0] || -- sample_idx == mi->max_tp_rate[1] || -- sample_idx == mi->max_prob_rate) -+ if (sample_idx == mi->max_tp_rate[0] || sample_idx == mi->max_prob_rate) - return -1; - - /* -@@ -1001,10 +1010,10 @@ minstrel_get_sample_rate(struct minstrel - * if the link is working perfectly. - */ - -- cur_max_tp_streams = minstrel_mcs_groups[mi->max_tp_rate[0] / -+ cur_max_tp_streams = minstrel_mcs_groups[tp_rate1 / - MCS_GROUP_RATES].streams; - sample_dur = minstrel_get_duration(sample_idx); -- if (sample_dur >= minstrel_get_duration(mi->max_tp_rate[1]) && -+ if (sample_dur >= minstrel_get_duration(tp_rate2) && - (cur_max_tp_streams - 1 < - minstrel_mcs_groups[sample_group].streams || - sample_dur >= minstrel_get_duration(mi->max_prob_rate))) { |