diff options
Diffstat (limited to 'package/kernel/mac80211/patches/subsys/343-mac80211-minstrel_ht-fix-max-probability-rate-select.patch')
| -rw-r--r-- | package/kernel/mac80211/patches/subsys/343-mac80211-minstrel_ht-fix-max-probability-rate-select.patch | 124 |
1 files changed, 0 insertions, 124 deletions
diff --git a/package/kernel/mac80211/patches/subsys/343-mac80211-minstrel_ht-fix-max-probability-rate-select.patch b/package/kernel/mac80211/patches/subsys/343-mac80211-minstrel_ht-fix-max-probability-rate-select.patch deleted file mode 100644 index 0dbfa9d4fb..0000000000 --- a/package/kernel/mac80211/patches/subsys/343-mac80211-minstrel_ht-fix-max-probability-rate-select.patch +++ /dev/null @@ -1,124 +0,0 @@ -From: Felix Fietkau <nbd@nbd.name> -Date: Sat, 26 Dec 2020 19:09:08 +0100 -Subject: [PATCH] mac80211: minstrel_ht: fix max probability rate selection - -- do not select rates faster than the max throughput rate if probability is lower -- reset previous rate before sorting again - -This ensures that the max prob rate gets set to a more reliable rate - -Signed-off-by: Felix Fietkau <nbd@nbd.name> ---- - ---- a/net/mac80211/rc80211_minstrel_ht.c -+++ b/net/mac80211/rc80211_minstrel_ht.c -@@ -495,12 +495,13 @@ minstrel_ht_sort_best_tp_rates(struct mi - * Find and set the topmost probability rate per sta and per group - */ - static void --minstrel_ht_set_best_prob_rate(struct minstrel_ht_sta *mi, u16 index) -+minstrel_ht_set_best_prob_rate(struct minstrel_ht_sta *mi, u16 *dest, u16 index) - { - struct minstrel_mcs_group_data *mg; - struct minstrel_rate_stats *mrs; - int tmp_group, tmp_idx, tmp_tp_avg, tmp_prob; -- int max_tp_group, cur_tp_avg, cur_group, cur_idx; -+ int max_tp_group, max_tp_idx, max_tp_prob; -+ int cur_tp_avg, cur_group, cur_idx; - int max_gpr_group, max_gpr_idx; - int max_gpr_tp_avg, max_gpr_prob; - -@@ -509,18 +510,26 @@ minstrel_ht_set_best_prob_rate(struct mi - mg = &mi->groups[index / MCS_GROUP_RATES]; - mrs = &mg->rates[index % MCS_GROUP_RATES]; - -- tmp_group = mi->max_prob_rate / MCS_GROUP_RATES; -- tmp_idx = mi->max_prob_rate % MCS_GROUP_RATES; -+ tmp_group = *dest / MCS_GROUP_RATES; -+ tmp_idx = *dest % MCS_GROUP_RATES; - tmp_prob = mi->groups[tmp_group].rates[tmp_idx].prob_avg; - tmp_tp_avg = minstrel_ht_get_tp_avg(mi, tmp_group, tmp_idx, tmp_prob); - - /* if max_tp_rate[0] is from MCS_GROUP max_prob_rate get selected from - * MCS_GROUP as well as CCK_GROUP rates do not allow aggregation */ - max_tp_group = mi->max_tp_rate[0] / MCS_GROUP_RATES; -+ max_tp_idx = mi->max_tp_rate[0] % MCS_GROUP_RATES; -+ max_tp_prob = mi->groups[max_tp_group].rates[max_tp_idx].prob_avg; -+ - if (minstrel_ht_is_legacy_group(index / MCS_GROUP_RATES) && - !minstrel_ht_is_legacy_group(max_tp_group)) - return; - -+ /* skip rates faster than max tp rate with lower prob */ -+ if (minstrel_get_duration(mi->max_tp_rate[0]) > minstrel_get_duration(index) && -+ mrs->prob_avg < max_tp_prob) -+ return; -+ - max_gpr_group = mg->max_group_prob_rate / MCS_GROUP_RATES; - max_gpr_idx = mg->max_group_prob_rate % MCS_GROUP_RATES; - max_gpr_prob = mi->groups[max_gpr_group].rates[max_gpr_idx].prob_avg; -@@ -538,7 +547,7 @@ minstrel_ht_set_best_prob_rate(struct mi - mg->max_group_prob_rate = index; - } else { - if (mrs->prob_avg > tmp_prob) -- mi->max_prob_rate = index; -+ *dest = index; - if (mrs->prob_avg > max_gpr_prob) - mg->max_group_prob_rate = index; - } -@@ -816,7 +825,8 @@ minstrel_ht_update_stats(struct minstrel - struct minstrel_rate_stats *mrs; - int group, i, j, cur_prob; - u16 tmp_mcs_tp_rate[MAX_THR_RATES], tmp_group_tp_rate[MAX_THR_RATES]; -- u16 tmp_legacy_tp_rate[MAX_THR_RATES], index; -+ u16 tmp_legacy_tp_rate[MAX_THR_RATES], tmp_max_prob_rate; -+ u16 index; - bool ht_supported = mi->sta->ht_cap.ht_supported; - - mi->sample_mode = MINSTREL_SAMPLE_IDLE; -@@ -863,6 +873,7 @@ minstrel_ht_update_stats(struct minstrel - else - index = MINSTREL_OFDM_GROUP * MCS_GROUP_RATES; - -+ tmp_max_prob_rate = index; - for (j = 0; j < ARRAY_SIZE(tmp_mcs_tp_rate); j++) - tmp_mcs_tp_rate[j] = index; - -@@ -903,9 +914,6 @@ minstrel_ht_update_stats(struct minstrel - /* Find max throughput rate set within a group */ - minstrel_ht_sort_best_tp_rates(mi, index, - tmp_group_tp_rate); -- -- /* Find max probability rate per group and global */ -- minstrel_ht_set_best_prob_rate(mi, index); - } - - memcpy(mg->max_group_tp_rate, tmp_group_tp_rate, -@@ -917,6 +925,27 @@ minstrel_ht_update_stats(struct minstrel - tmp_legacy_tp_rate); - memcpy(mi->max_tp_rate, tmp_mcs_tp_rate, sizeof(mi->max_tp_rate)); - -+ for (group = 0; group < ARRAY_SIZE(minstrel_mcs_groups); group++) { -+ if (!mi->supported[group]) -+ continue; -+ -+ mg = &mi->groups[group]; -+ mg->max_group_prob_rate = MCS_GROUP_RATES * group; -+ -+ for (i = 0; i < MCS_GROUP_RATES; i++) { -+ if (!(mi->supported[group] & BIT(i))) -+ continue; -+ -+ index = MCS_GROUP_RATES * group + i; -+ -+ /* Find max probability rate per group and global */ -+ minstrel_ht_set_best_prob_rate(mi, &tmp_max_prob_rate, -+ index); -+ } -+ } -+ -+ mi->max_prob_rate = tmp_max_prob_rate; -+ - /* Try to increase robustness of max_prob_rate*/ - minstrel_ht_prob_rate_reduce_streams(mi); - |