mac80211: add new minstrel_ht patches to improve probing on mt76x2

[openwrt/staging/wigyori.git] / package / kernel / mac80211 / patches / subsys / 365-mac80211-minstrel_ht-fix-default-max-throughput-rate.patch

diff --git a/package/kernel/mac80211/patches/subsys/365-mac80211-minstrel_ht-fix-default-max-throughput-rate.patch b/package/kernel/mac80211/patches/subsys/365-mac80211-minstrel_ht-fix-default-max-throughput-rate.patch
new file mode 100644 (file)
index 0000000..f1e684c
--- /dev/null
+++ b/package/kernel/mac80211/patches/subsys/365-mac80211-minstrel_ht-fix-default-max-throughput-rate.patch
@@ -0,0 +1,46 @@
+From: Felix Fietkau <nbd@nbd.name>
+Date: Fri, 14 Jun 2019 21:14:22 +0200
+Subject: [PATCH] mac80211: minstrel_ht: fix default max throughput rate
+ indexes
+
+Use the first supported rate instead of 0 (which can be invalid)
+
+Signed-off-by: Felix Fietkau <nbd@nbd.name>
+---
+
+--- a/net/mac80211/rc80211_minstrel_ht.c
++++ b/net/mac80211/rc80211_minstrel_ht.c
+@@ -487,7 +487,7 @@ minstrel_ht_assign_best_tp_rates(struct
+       tmp_prob = mi->groups[tmp_group].rates[tmp_idx].prob_ewma;
+       tmp_mcs_tp = minstrel_ht_get_tp_avg(mi, tmp_group, tmp_idx, tmp_prob);
+ 
+-      if (tmp_cck_tp > tmp_mcs_tp) {
++      if (tmp_cck_tp_rate && tmp_cck_tp > tmp_mcs_tp) {
+               for(i = 0; i < MAX_THR_RATES; i++) {
+                       minstrel_ht_sort_best_tp_rates(mi, tmp_cck_tp_rate[i],
+                                                      tmp_mcs_tp_rate);
+@@ -559,11 +559,19 @@ minstrel_ht_update_stats(struct minstrel
+       mi->sample_slow = 0;
+       mi->sample_count = 0;
+ 
+-      /* Initialize global rate indexes */
+-      for(j = 0; j < MAX_THR_RATES; j++){
+-              tmp_mcs_tp_rate[j] = 0;
+-              tmp_cck_tp_rate[j] = 0;
+-      }
++      memset(tmp_mcs_tp_rate, 0, sizeof(tmp_mcs_tp_rate));
++      memset(tmp_cck_tp_rate, 0, sizeof(tmp_cck_tp_rate));
++      if (mi->supported[MINSTREL_CCK_GROUP])
++              for (j = 0; j < ARRAY_SIZE(tmp_cck_tp_rate); j++)
++                      tmp_cck_tp_rate[j] = MINSTREL_CCK_GROUP * MCS_GROUP_RATES;
++
++      if (mi->supported[MINSTREL_VHT_GROUP_0])
++              index = MINSTREL_VHT_GROUP_0 * MCS_GROUP_RATES;
++      else
++              index = MINSTREL_HT_GROUP_0 * MCS_GROUP_RATES;
++
++      for (j = 0; j < ARRAY_SIZE(tmp_mcs_tp_rate); j++)
++              tmp_mcs_tp_rate[j] = index;
+ 
+       /* Find best rate sets within all MCS groups*/
+       for (group = 0; group < ARRAY_SIZE(minstrel_mcs_groups); group++) {