package/kernel/mac80211/patches/subsys/350-mac80211-minstrel_ht-show-sampling-rates-in-debugfs.patch

   1 From: Felix Fietkau <nbd@nbd.name>
   2 Date: Sat, 23 Jan 2021 00:10:34 +0100
   3 Subject: [PATCH] mac80211: minstrel_ht: show sampling rates in debugfs
   4
   5 This makes it easier to see what rates are going to be tested next
   6
   7 Signed-off-by: Felix Fietkau <nbd@nbd.name>
   8 ---
   9
  10 --- a/net/mac80211/rc80211_minstrel_ht_debugfs.c
  11 +++ b/net/mac80211/rc80211_minstrel_ht_debugfs.c
  12 @@ -32,6 +32,18 @@ minstrel_stats_release(struct inode *ino
  13         return 0;
  14  }
  15
  16 +static bool
  17 +minstrel_ht_is_sample_rate(struct minstrel_ht_sta *mi, int idx)
  18 +{
  19 +       int type, i;
  20 +
  21 +       for (type = 0; type < ARRAY_SIZE(mi->sample); type++)
  22 +               for (i = 0; i < MINSTREL_SAMPLE_RATES; i++)
  23 +                       if (mi->sample[type].cur_sample_rates[i] == idx)
  24 +                               return true;
  25 +       return false;
  26 +}
  27 +
  28  static char *
  29  minstrel_ht_stats_dump(struct minstrel_ht_sta *mi, int i, char *p)
  30  {
  31 @@ -84,6 +96,7 @@ minstrel_ht_stats_dump(struct minstrel_h
  32                 *(p++) = (idx == mi->max_tp_rate[2]) ? 'C' : ' ';
  33                 *(p++) = (idx == mi->max_tp_rate[3]) ? 'D' : ' ';
  34                 *(p++) = (idx == mi->max_prob_rate) ? 'P' : ' ';
  35 +               *(p++) = minstrel_ht_is_sample_rate(mi, idx) ? 'S' : ' ';
  36
  37                 if (gflags & IEEE80211_TX_RC_MCS) {
  38                         p += sprintf(p, "  MCS%-2u", (mg->streams - 1) * 8 + j);
  39 @@ -145,9 +158,9 @@ minstrel_ht_stats_open(struct inode *ino
  40
  41         p += sprintf(p, "\n");
  42         p += sprintf(p,
  43 -                    "              best   ____________rate__________    ____statistics___    _____last____    ______sum-of________\n");
  44 +                    "              best    ____________rate__________    ____statistics___    _____last____    ______sum-of________\n");
  45         p += sprintf(p,
  46 -                    "mode guard #  rate  [name   idx airtime  max_tp]  [avg(tp) avg(prob)]  [retry|suc|att]  [#success | #attempts]\n");
  47 +                    "mode guard #  rate   [name   idx airtime  max_tp]  [avg(tp) avg(prob)]  [retry|suc|att]  [#success | #attempts]\n");
  48
  49         p = minstrel_ht_stats_dump(mi, MINSTREL_CCK_GROUP, p);
  50         for (i = 0; i < MINSTREL_CCK_GROUP; i++)
  51 @@ -228,6 +241,7 @@ minstrel_ht_stats_csv_dump(struct minstr
  52                 p += sprintf(p, "%s" ,((idx == mi->max_tp_rate[2]) ? "C" : ""));
  53                 p += sprintf(p, "%s" ,((idx == mi->max_tp_rate[3]) ? "D" : ""));
  54                 p += sprintf(p, "%s" ,((idx == mi->max_prob_rate) ? "P" : ""));
  55 +               p += sprintf(p, "%s", (minstrel_ht_is_sample_rate(mi, idx) ? "S" : ""));
  56
  57                 if (gflags & IEEE80211_TX_RC_MCS) {
  58                         p += sprintf(p, ",MCS%-2u,", (mg->streams - 1) * 8 + j);