mac80211: minstrel_ht: show sampling rates in debugfs

This makes it easier to see what rates are going to be tested next

Signed-off-by: Felix Fietkau <nbd@nbd.name>
Link: https://lore.kernel.org/r/20210127055735.78599-5-nbd@nbd.name
Signed-off-by: Johannes Berg <johannes.berg@intel.com>

diff --git a/net/mac80211/rc80211_minstrel_ht_debugfs.c b/net/mac80211/rc80211_minstrel_ht_debugfs.c
index 067d103..25b8a67 100644 (file)
--- a/net/mac80211/rc80211_minstrel_ht_debugfs.c
+++ b/net/mac80211/rc80211_minstrel_ht_debugfs.c
@@ -32,6 +32,18 @@ minstrel_stats_release(struct inode *inode, struct file *file)
        return 0;
 }
 
+static bool
+minstrel_ht_is_sample_rate(struct minstrel_ht_sta *mi, int idx)
+{
+       int type, i;
+
+       for (type = 0; type < ARRAY_SIZE(mi->sample); type++)
+               for (i = 0; i < MINSTREL_SAMPLE_RATES; i++)
+                       if (mi->sample[type].cur_sample_rates[i] == idx)
+                               return true;
+       return false;
+}
+
 static char *
 minstrel_ht_stats_dump(struct minstrel_ht_sta *mi, int i, char *p)
 {
@@ -84,6 +96,7 @@ minstrel_ht_stats_dump(struct minstrel_ht_sta *mi, int i, char *p)
                *(p++) = (idx == mi->max_tp_rate[2]) ? 'C' : ' ';
                *(p++) = (idx == mi->max_tp_rate[3]) ? 'D' : ' ';
                *(p++) = (idx == mi->max_prob_rate) ? 'P' : ' ';
+               *(p++) = minstrel_ht_is_sample_rate(mi, idx) ? 'S' : ' ';
 
                if (gflags & IEEE80211_TX_RC_MCS) {
                        p += sprintf(p, "  MCS%-2u", (mg->streams - 1) * 8 + j);
@@ -145,9 +158,9 @@ minstrel_ht_stats_open(struct inode *inode, struct file *file)
 
        p += sprintf(p, "\n");
        p += sprintf(p,
-                    "              best   ____________rate__________    ____statistics___    _____last____    ______sum-of________\n");
+                    "              best    ____________rate__________    ____statistics___    _____last____    ______sum-of________\n");
        p += sprintf(p,
-                    "mode guard #  rate  [name   idx airtime  max_tp]  [avg(tp) avg(prob)]  [retry|suc|att]  [#success | #attempts]\n");
+                    "mode guard #  rate   [name   idx airtime  max_tp]  [avg(tp) avg(prob)]  [retry|suc|att]  [#success | #attempts]\n");
 
        p = minstrel_ht_stats_dump(mi, MINSTREL_CCK_GROUP, p);
        for (i = 0; i < MINSTREL_CCK_GROUP; i++)
@@ -228,6 +241,7 @@ minstrel_ht_stats_csv_dump(struct minstrel_ht_sta *mi, int i, char *p)
                p += sprintf(p, "%s" ,((idx == mi->max_tp_rate[2]) ? "C" : ""));
                p += sprintf(p, "%s" ,((idx == mi->max_tp_rate[3]) ? "D" : ""));
                p += sprintf(p, "%s" ,((idx == mi->max_prob_rate) ? "P" : ""));
+               p += sprintf(p, "%s", (minstrel_ht_is_sample_rate(mi, idx) ? "S" : ""));
 
                if (gflags & IEEE80211_TX_RC_MCS) {
                        p += sprintf(p, ",MCS%-2u,", (mg->streams - 1) * 8 + j);