Adding upstream version 4.19.249.upstream/4.19.249upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 319 insertions, 0 deletions

diff --git a/net/mac80211/rc80211_minstrel_ht_debugfs.c b/net/mac80211/rc80211_minstrel_ht_debugfs.c
new file mode 100644
index 000000000..bfcc03152
--- /dev/null
+++ b/net/mac80211/rc80211_minstrel_ht_debugfs.c
@@ -0,0 +1,319 @@
+/*
+ * Copyright (C) 2010 Felix Fietkau <nbd@openwrt.org>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+#include <linux/netdevice.h>
+#include <linux/types.h>
+#include <linux/skbuff.h>
+#include <linux/debugfs.h>
+#include <linux/ieee80211.h>
+#include <linux/export.h>
+#include <net/mac80211.h>
+#include "rc80211_minstrel.h"
+#include "rc80211_minstrel_ht.h"
+
+static char *
+minstrel_ht_stats_dump(struct minstrel_ht_sta *mi, int i, char *p)
+{
+	const struct mcs_group *mg;
+	unsigned int j, tp_max, tp_avg, eprob, tx_time;
+	char htmode = '2';
+	char gimode = 'L';
+	u32 gflags;
+
+	if (!mi->supported[i])
+		return p;
+
+	mg = &minstrel_mcs_groups[i];
+	gflags = mg->flags;
+
+	if (gflags & IEEE80211_TX_RC_40_MHZ_WIDTH)
+		htmode = '4';
+	else if (gflags & IEEE80211_TX_RC_80_MHZ_WIDTH)
+		htmode = '8';
+	if (gflags & IEEE80211_TX_RC_SHORT_GI)
+		gimode = 'S';
+
+	for (j = 0; j < MCS_GROUP_RATES; j++) {
+		struct minstrel_rate_stats *mrs = &mi->groups[i].rates[j];
+		static const int bitrates[4] = { 10, 20, 55, 110 };
+		int idx = i * MCS_GROUP_RATES + j;
+		unsigned int prob_ewmsd;
+
+		if (!(mi->supported[i] & BIT(j)))
+			continue;
+
+		if (gflags & IEEE80211_TX_RC_MCS) {
+			p += sprintf(p, "HT%c0  ", htmode);
+			p += sprintf(p, "%cGI  ", gimode);
+			p += sprintf(p, "%d  ", mg->streams);
+		} else if (gflags & IEEE80211_TX_RC_VHT_MCS) {
+			p += sprintf(p, "VHT%c0 ", htmode);
+			p += sprintf(p, "%cGI ", gimode);
+			p += sprintf(p, "%d  ", mg->streams);
+		} else {
+			p += sprintf(p, "CCK    ");
+			p += sprintf(p, "%cP  ", j < 4 ? 'L' : 'S');
+			p += sprintf(p, "1 ");
+		}
+
+		*(p++) = (idx == mi->max_tp_rate[0]) ? 'A' : ' ';
+		*(p++) = (idx == mi->max_tp_rate[1]) ? 'B' : ' ';
+		*(p++) = (idx == mi->max_tp_rate[2]) ? 'C' : ' ';
+		*(p++) = (idx == mi->max_tp_rate[3]) ? 'D' : ' ';
+		*(p++) = (idx == mi->max_prob_rate) ? 'P' : ' ';
+
+		if (gflags & IEEE80211_TX_RC_MCS) {
+			p += sprintf(p, "  MCS%-2u", (mg->streams - 1) * 8 + j);
+		} else if (gflags & IEEE80211_TX_RC_VHT_MCS) {
+			p += sprintf(p, "  MCS%-1u/%1u", j, mg->streams);
+		} else {
+			int r = bitrates[j % 4];
+
+			p += sprintf(p, "   %2u.%1uM", r / 10, r % 10);
+		}
+
+		p += sprintf(p, "  %3u  ", idx);
+
+		/* tx_time[rate(i)] in usec */
+		tx_time = DIV_ROUND_CLOSEST(mg->duration[j], 1000);
+		p += sprintf(p, "%6u  ", tx_time);
+
+		tp_max = minstrel_ht_get_tp_avg(mi, i, j, MINSTREL_FRAC(100, 100));
+		tp_avg = minstrel_ht_get_tp_avg(mi, i, j, mrs->prob_ewma);
+		eprob = MINSTREL_TRUNC(mrs->prob_ewma * 1000);
+		prob_ewmsd = minstrel_get_ewmsd10(mrs);
+
+		p += sprintf(p, "%4u.%1u    %4u.%1u     %3u.%1u    %3u.%1u"
+				"     %3u   %3u %-3u   "
+				"%9llu   %-9llu\n",
+				tp_max / 10, tp_max % 10,
+				tp_avg / 10, tp_avg % 10,
+				eprob / 10, eprob % 10,
+				prob_ewmsd / 10, prob_ewmsd % 10,
+				mrs->retry_count,
+				mrs->last_success,
+				mrs->last_attempts,
+				(unsigned long long)mrs->succ_hist,
+				(unsigned long long)mrs->att_hist);
+	}
+
+	return p;
+}
+
+static int
+minstrel_ht_stats_open(struct inode *inode, struct file *file)
+{
+	struct minstrel_ht_sta_priv *msp = inode->i_private;
+	struct minstrel_ht_sta *mi = &msp->ht;
+	struct minstrel_debugfs_info *ms;
+	unsigned int i;
+	int ret;
+	char *p;
+
+	if (!msp->is_ht) {
+		inode->i_private = &msp->legacy;
+		ret = minstrel_stats_open(inode, file);
+		inode->i_private = msp;
+		return ret;
+	}
+
+	ms = kmalloc(32768, GFP_KERNEL);
+	if (!ms)
+		return -ENOMEM;
+
+	file->private_data = ms;
+	p = ms->buf;
+
+	p += sprintf(p, "\n");
+	p += sprintf(p,
+		     "              best   ____________rate__________    ________statistics________    _____last____    ______sum-of________\n");
+	p += sprintf(p,
+		     "mode guard #  rate  [name   idx airtime  max_tp]  [avg(tp) avg(prob) sd(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++)
+		p = minstrel_ht_stats_dump(mi, i, p);
+	for (i++; i < ARRAY_SIZE(mi->groups); i++)
+		p = minstrel_ht_stats_dump(mi, i, p);
+
+	p += sprintf(p, "\nTotal packet count::    ideal %d      "
+			"lookaround %d\n",
+			max(0, (int) mi->total_packets - (int) mi->sample_packets),
+			mi->sample_packets);
+	p += sprintf(p, "Average # of aggregated frames per A-MPDU: %d.%d\n",
+		MINSTREL_TRUNC(mi->avg_ampdu_len),
+		MINSTREL_TRUNC(mi->avg_ampdu_len * 10) % 10);
+	ms->len = p - ms->buf;
+	WARN_ON(ms->len + sizeof(*ms) > 32768);
+
+	return nonseekable_open(inode, file);
+}
+
+static const struct file_operations minstrel_ht_stat_fops = {
+	.owner = THIS_MODULE,
+	.open = minstrel_ht_stats_open,
+	.read = minstrel_stats_read,
+	.release = minstrel_stats_release,
+	.llseek = no_llseek,
+};
+
+static char *
+minstrel_ht_stats_csv_dump(struct minstrel_ht_sta *mi, int i, char *p)
+{
+	const struct mcs_group *mg;
+	unsigned int j, tp_max, tp_avg, eprob, tx_time;
+	char htmode = '2';
+	char gimode = 'L';
+	u32 gflags;
+
+	if (!mi->supported[i])
+		return p;
+
+	mg = &minstrel_mcs_groups[i];
+	gflags = mg->flags;
+
+	if (gflags & IEEE80211_TX_RC_40_MHZ_WIDTH)
+		htmode = '4';
+	else if (gflags & IEEE80211_TX_RC_80_MHZ_WIDTH)
+		htmode = '8';
+	if (gflags & IEEE80211_TX_RC_SHORT_GI)
+		gimode = 'S';
+
+	for (j = 0; j < MCS_GROUP_RATES; j++) {
+		struct minstrel_rate_stats *mrs = &mi->groups[i].rates[j];
+		static const int bitrates[4] = { 10, 20, 55, 110 };
+		int idx = i * MCS_GROUP_RATES + j;
+		unsigned int prob_ewmsd;
+
+		if (!(mi->supported[i] & BIT(j)))
+			continue;
+
+		if (gflags & IEEE80211_TX_RC_MCS) {
+			p += sprintf(p, "HT%c0,", htmode);
+			p += sprintf(p, "%cGI,", gimode);
+			p += sprintf(p, "%d,", mg->streams);
+		} else if (gflags & IEEE80211_TX_RC_VHT_MCS) {
+			p += sprintf(p, "VHT%c0,", htmode);
+			p += sprintf(p, "%cGI,", gimode);
+			p += sprintf(p, "%d,", mg->streams);
+		} else {
+			p += sprintf(p, "CCK,");
+			p += sprintf(p, "%cP,", j < 4 ? 'L' : 'S');
+			p += sprintf(p, "1,");
+		}
+
+		p += sprintf(p, "%s" ,((idx == mi->max_tp_rate[0]) ? "A" : ""));
+		p += sprintf(p, "%s" ,((idx == mi->max_tp_rate[1]) ? "B" : ""));
+		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" : ""));
+
+		if (gflags & IEEE80211_TX_RC_MCS) {
+			p += sprintf(p, ",MCS%-2u,", (mg->streams - 1) * 8 + j);
+		} else if (gflags & IEEE80211_TX_RC_VHT_MCS) {
+			p += sprintf(p, ",MCS%-1u/%1u,", j, mg->streams);
+		} else {
+			int r = bitrates[j % 4];
+			p += sprintf(p, ",%2u.%1uM,", r / 10, r % 10);
+		}
+
+		p += sprintf(p, "%u,", idx);
+		tx_time = DIV_ROUND_CLOSEST(mg->duration[j], 1000);
+		p += sprintf(p, "%u,", tx_time);
+
+		tp_max = minstrel_ht_get_tp_avg(mi, i, j, MINSTREL_FRAC(100, 100));
+		tp_avg = minstrel_ht_get_tp_avg(mi, i, j, mrs->prob_ewma);
+		eprob = MINSTREL_TRUNC(mrs->prob_ewma * 1000);
+		prob_ewmsd = minstrel_get_ewmsd10(mrs);
+
+		p += sprintf(p, "%u.%u,%u.%u,%u.%u,%u.%u,%u,%u,"
+				"%u,%llu,%llu,",
+				tp_max / 10, tp_max % 10,
+				tp_avg / 10, tp_avg % 10,
+				eprob / 10, eprob % 10,
+				prob_ewmsd / 10, prob_ewmsd % 10,
+				mrs->retry_count,
+				mrs->last_success,
+				mrs->last_attempts,
+				(unsigned long long)mrs->succ_hist,
+				(unsigned long long)mrs->att_hist);
+		p += sprintf(p, "%d,%d,%d.%d\n",
+				max(0, (int) mi->total_packets -
+				(int) mi->sample_packets),
+				mi->sample_packets,
+				MINSTREL_TRUNC(mi->avg_ampdu_len),
+				MINSTREL_TRUNC(mi->avg_ampdu_len * 10) % 10);
+	}
+
+	return p;
+}
+
+static int
+minstrel_ht_stats_csv_open(struct inode *inode, struct file *file)
+{
+	struct minstrel_ht_sta_priv *msp = inode->i_private;
+	struct minstrel_ht_sta *mi = &msp->ht;
+	struct minstrel_debugfs_info *ms;
+	unsigned int i;
+	int ret;
+	char *p;
+
+	if (!msp->is_ht) {
+		inode->i_private = &msp->legacy;
+		ret = minstrel_stats_csv_open(inode, file);
+		inode->i_private = msp;
+		return ret;
+	}
+
+	ms = kmalloc(32768, GFP_KERNEL);
+
+	if (!ms)
+		return -ENOMEM;
+
+	file->private_data = ms;
+
+	p = ms->buf;
+
+	p = minstrel_ht_stats_csv_dump(mi, MINSTREL_CCK_GROUP, p);
+	for (i = 0; i < MINSTREL_CCK_GROUP; i++)
+		p = minstrel_ht_stats_csv_dump(mi, i, p);
+	for (i++; i < ARRAY_SIZE(mi->groups); i++)
+		p = minstrel_ht_stats_csv_dump(mi, i, p);
+
+	ms->len = p - ms->buf;
+	WARN_ON(ms->len + sizeof(*ms) > 32768);
+
+	return nonseekable_open(inode, file);
+}
+
+static const struct file_operations minstrel_ht_stat_csv_fops = {
+	.owner = THIS_MODULE,
+	.open = minstrel_ht_stats_csv_open,
+	.read = minstrel_stats_read,
+	.release = minstrel_stats_release,
+	.llseek = no_llseek,
+};
+
+void
+minstrel_ht_add_sta_debugfs(void *priv, void *priv_sta, struct dentry *dir)
+{
+	struct minstrel_ht_sta_priv *msp = priv_sta;
+
+	msp->dbg_stats = debugfs_create_file("rc_stats", 0444, dir, msp,
+					     &minstrel_ht_stat_fops);
+	msp->dbg_stats_csv = debugfs_create_file("rc_stats_csv", 0444, dir, msp,
+						 &minstrel_ht_stat_csv_fops);
+}
+
+void
+minstrel_ht_remove_sta_debugfs(void *priv, void *priv_sta)
+{
+	struct minstrel_ht_sta_priv *msp = priv_sta;
+
+	debugfs_remove(msp->dbg_stats);
+	debugfs_remove(msp->dbg_stats_csv);
+}