[linux-2.6-block.git] / net / mac80211 / rc80211_minstrel_ht_debugfs.c

// SPDX-License-Identifier: GPL-2.0-only
/*
 * Copyright (C) 2010 Felix Fietkau <nbd@openwrt.org>
 */
#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_ht.h"

struct minstrel_debugfs_info {
	size_t len;
	char buf[];
};

static ssize_t
minstrel_stats_read(struct file *file, char __user *buf, size_t len, loff_t *ppos)
{
	struct minstrel_debugfs_info *ms;

	ms = file->private_data;
	return simple_read_from_buffer(buf, len, ppos, ms->buf, ms->len);
}

static int
minstrel_stats_release(struct inode *inode, struct file *file)
{
	kfree(file->private_data);
	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)
{
	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];
		int idx = MI_RATE(i, j);
		unsigned int duration;

		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 if (i == MINSTREL_OFDM_GROUP) {
			p += sprintf(p, "OFDM       ");
			p += sprintf(p, "1 ");
		} 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' : ' ';
		*(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);
		} else if (gflags & IEEE80211_TX_RC_VHT_MCS) {
			p += sprintf(p, "  MCS%-1u/%1u", j, mg->streams);
		} else {
			int r;

			if (i == MINSTREL_OFDM_GROUP)
				r = minstrel_ofdm_bitrates[j % 8];
			else
				r = minstrel_cck_bitrates[j % 4];

			p += sprintf(p, "   %2u.%1uM", r / 10, r % 10);
		}

		p += sprintf(p, "  %3u  ", idx);

		/* tx_time[rate(i)] in usec */
		duration = mg->duration[j];
		duration <<= mg->shift;
		tx_time = DIV_ROUND_CLOSEST(duration, 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_avg);
		eprob = MINSTREL_TRUNC(mrs->prob_avg * 1000);

		p += sprintf(p, "%4u.%1u    %4u.%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,
				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 *mi = inode->i_private;
	struct minstrel_debugfs_info *ms;
	unsigned int i;
	char *p;

	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)]  [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);
	if (mi->avg_ampdu_len)
		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,
};

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];
		int idx = MI_RATE(i, j);
		unsigned int duration;

		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 if (i == MINSTREL_OFDM_GROUP) {
			p += sprintf(p, "OFDM,,1,");
		} 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" : ""));
		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);
		} else if (gflags & IEEE80211_TX_RC_VHT_MCS) {
			p += sprintf(p, ",MCS%-1u/%1u,", j, mg->streams);
		} else {
			int r;

			if (i == MINSTREL_OFDM_GROUP)
				r = minstrel_ofdm_bitrates[j % 8];
			else
				r = minstrel_cck_bitrates[j % 4];

			p += sprintf(p, ",%2u.%1uM,", r / 10, r % 10);
		}

		p += sprintf(p, "%u,", idx);

		duration = mg->duration[j];
		duration <<= mg->shift;
		tx_time = DIV_ROUND_CLOSEST(duration, 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_avg);
		eprob = MINSTREL_TRUNC(mrs->prob_avg * 1000);

		p += sprintf(p, "%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,
				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 *mi = inode->i_private;
	struct minstrel_debugfs_info *ms;
	unsigned int i;
	char *p;

	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,
};

void
minstrel_ht_add_sta_debugfs(void *priv, void *priv_sta, struct dentry *dir)
{
	debugfs_create_file("rc_stats", 0444, dir, priv_sta,
			    &minstrel_ht_stat_fops);
	debugfs_create_file("rc_stats_csv", 0444, dir, priv_sta,
			    &minstrel_ht_stat_csv_fops);
}
Commit	Line	Data
d2912cb1	1	// SPDX-License-Identifier: GPL-2.0-only
ec8aa669 FF	2	/*
ec8aa669 FF	3	* Copyright (C) 2010 Felix Fietkau <nbd@openwrt.org>
ec8aa669 FF	4	*/
	5	#include <linux/netdevice.h>
	6	#include <linux/types.h>
	7	#include <linux/skbuff.h>
	8	#include <linux/debugfs.h>
	9	#include <linux/ieee80211.h>
bc3b2d7f	10	#include <linux/export.h>
ec8aa669	11	#include <net/mac80211.h>
ec8aa669 FF	12	#include "rc80211_minstrel_ht.h"
ec8aa669 FF	13
cbda98c7 FF	14	struct minstrel_debugfs_info {
	15	size_t len;
	16	char buf[];
	17	};
	18
b1c4f683 FF	19	static ssize_t
	20	minstrel_stats_read(struct file file, char __user buf, size_t len, loff_t *ppos)
	21	{
	22	struct minstrel_debugfs_info *ms;
	23
	24	ms = file->private_data;
	25	return simple_read_from_buffer(buf, len, ppos, ms->buf, ms->len);
	26	}
	27
	28	static int
	29	minstrel_stats_release(struct inode inode, struct file file)
	30	{
	31	kfree(file->private_data);
	32	return 0;
	33	}
	34
4a8d0c99 FF	35	static bool
	36	minstrel_ht_is_sample_rate(struct minstrel_ht_sta *mi, int idx)
	37	{
	38	int type, i;
	39
	40	for (type = 0; type < ARRAY_SIZE(mi->sample); type++)
	41	for (i = 0; i < MINSTREL_SAMPLE_RATES; i++)
	42	if (mi->sample[type].cur_sample_rates[i] == idx)
	43	return true;
	44	return false;
	45	}
	46
a0497f9f FF	47	static char *
	48	minstrel_ht_stats_dump(struct minstrel_ht_sta mi, int i, char p)
	49	{
a0497f9f	50	const struct mcs_group *mg;
1109dc39	51	unsigned int j, tp_max, tp_avg, eprob, tx_time;
a0497f9f FF	52	char htmode = '2';
a0497f9f FF	53	char gimode = 'L';
8ec7886b	54	u32 gflags;
a0497f9f	55
41d08583	56	if (!mi->supported[i])
a0497f9f FF	57	return p;
	58
	59	mg = &minstrel_mcs_groups[i];
8ec7886b KB	60	gflags = mg->flags;
	61
	62	if (gflags & IEEE80211_TX_RC_40_MHZ_WIDTH)
a0497f9f	63	htmode = '4';
8ec7886b	64	else if (gflags & IEEE80211_TX_RC_80_MHZ_WIDTH)
9208247d	65	htmode = '8';
8ec7886b	66	if (gflags & IEEE80211_TX_RC_SHORT_GI)
a0497f9f FF	67	gimode = 'S';
	68
	69	for (j = 0; j < MCS_GROUP_RATES; j++) {
9134073b	70	struct minstrel_rate_stats *mrs = &mi->groups[i].rates[j];
a42fa256	71	int idx = MI_RATE(i, j);
202df504	72	unsigned int duration;
a0497f9f	73
41d08583	74	if (!(mi->supported[i] & BIT(j)))
a0497f9f FF	75	continue;
a0497f9f FF	76
9c00bb72 TH	77	if (gflags & IEEE80211_TX_RC_MCS) {
	78	p += sprintf(p, "HT%c0 ", htmode);
	79	p += sprintf(p, "%cGI ", gimode);
	80	p += sprintf(p, "%d ", mg->streams);
	81	} else if (gflags & IEEE80211_TX_RC_VHT_MCS) {
	82	p += sprintf(p, "VHT%c0 ", htmode);
	83	p += sprintf(p, "%cGI ", gimode);
	84	p += sprintf(p, "%d ", mg->streams);
a7844a53 FF	85	} else if (i == MINSTREL_OFDM_GROUP) {
	86	p += sprintf(p, "OFDM ");
	87	p += sprintf(p, "1 ");
9c00bb72 TH	88	} else {
	89	p += sprintf(p, "CCK ");
	90	p += sprintf(p, "%cP ", j < 4 ? 'L' : 'S');
	91	p += sprintf(p, "1 ");
	92	}
a0497f9f	93
5935839a TH	94	*(p++) = (idx == mi->max_tp_rate[0]) ? 'A' : ' ';
	95	*(p++) = (idx == mi->max_tp_rate[1]) ? 'B' : ' ';
	96	*(p++) = (idx == mi->max_tp_rate[2]) ? 'C' : ' ';
	97	*(p++) = (idx == mi->max_tp_rate[3]) ? 'D' : ' ';
a0497f9f	98	*(p++) = (idx == mi->max_prob_rate) ? 'P' : ' ';
4a8d0c99	99	*(p++) = minstrel_ht_is_sample_rate(mi, idx) ? 'S' : ' ';
a0497f9f	100
8ec7886b	101	if (gflags & IEEE80211_TX_RC_MCS) {
9c00bb72	102	p += sprintf(p, " MCS%-2u", (mg->streams - 1) * 8 + j);
8ec7886b	103	} else if (gflags & IEEE80211_TX_RC_VHT_MCS) {
9c00bb72	104	p += sprintf(p, " MCS%-1u/%1u", j, mg->streams);
a0497f9f	105	} else {
a7844a53 FF	106	int r;
	107
	108	if (i == MINSTREL_OFDM_GROUP)
	109	r = minstrel_ofdm_bitrates[j % 8];
	110	else
	111	r = minstrel_cck_bitrates[j % 4];
8ec7886b	112
9c00bb72	113	p += sprintf(p, " %2u.%1uM", r / 10, r % 10);
a0497f9f FF	114	}
a0497f9f FF	115
9c00bb72 TH	116	p += sprintf(p, " %3u ", idx);
	117
	118	/* tx_time[rate(i)] in usec */
202df504 FF	119	duration = mg->duration[j];
	120	duration <<= mg->shift;
	121	tx_time = DIV_ROUND_CLOSEST(duration, 1000);
50e55a8e	122	p += sprintf(p, "%6u ", tx_time);
9c00bb72	123
50e55a8e	124	tp_max = minstrel_ht_get_tp_avg(mi, i, j, MINSTREL_FRAC(100, 100));
5f63afe0 FF	125	tp_avg = minstrel_ht_get_tp_avg(mi, i, j, mrs->prob_avg);
5f63afe0 FF	126	eprob = MINSTREL_TRUNC(mrs->prob_avg * 1000);
a0497f9f	127
506dbf90	128	p += sprintf(p, "%4u.%1u %4u.%1u %3u.%1u"
1109dc39	129	" %3u %3u %-3u "
5f919abc	130	"%9llu %-9llu\n",
50e55a8e	131	tp_max / 10, tp_max % 10,
6a27b2c4	132	tp_avg / 10, tp_avg % 10,
a0497f9f	133	eprob / 10, eprob % 10,
9134073b TH	134	mrs->retry_count,
	135	mrs->last_success,
	136	mrs->last_attempts,
	137	(unsigned long long)mrs->succ_hist,
	138	(unsigned long long)mrs->att_hist);
a0497f9f FF	139	}
	140
	141	return p;
	142	}
	143
ec8aa669 FF	144	static int
	145	minstrel_ht_stats_open(struct inode inode, struct file file)
	146	{
cbda98c7	147	struct minstrel_ht_sta *mi = inode->i_private;
ec8aa669	148	struct minstrel_debugfs_info *ms;
a0497f9f	149	unsigned int i;
2cae0b6a	150	char *p;
ec8aa669	151
9208247d	152	ms = kmalloc(32768, GFP_KERNEL);
ec8aa669 FF	153	if (!ms)
	154	return -ENOMEM;
	155
	156	file->private_data = ms;
	157	p = ms->buf;
9c00bb72 TH	158
9c00bb72 TH	159	p += sprintf(p, "\n");
a0c391b1	160	p += sprintf(p,
4a8d0c99	161	" best ____________rate__________ ____statistics___ _____last____ ______sum-of________\n");
a0c391b1	162	p += sprintf(p,
4a8d0c99	163	"mode guard # rate [name idx airtime max_tp] [avg(tp) avg(prob)] [retry\|suc\|att] [#success \| #attempts]\n");
11b2357d	164
8a0ee4fe KB	165	p = minstrel_ht_stats_dump(mi, MINSTREL_CCK_GROUP, p);
8a0ee4fe KB	166	for (i = 0; i < MINSTREL_CCK_GROUP; i++)
a0497f9f	167	p = minstrel_ht_stats_dump(mi, i, p);
9208247d KB	168	for (i++; i < ARRAY_SIZE(mi->groups); i++)
9208247d KB	169	p = minstrel_ht_stats_dump(mi, i, p);
ec8aa669	170
ec8aa669 FF	171	p += sprintf(p, "\nTotal packet count:: ideal %d "
	172	"lookaround %d\n",
	173	max(0, (int) mi->total_packets - (int) mi->sample_packets),
	174	mi->sample_packets);
77f7ffdc FF	175	if (mi->avg_ampdu_len)
	176	p += sprintf(p, "Average # of aggregated frames per A-MPDU: %d.%d\n",
	177	MINSTREL_TRUNC(mi->avg_ampdu_len),
	178	MINSTREL_TRUNC(mi->avg_ampdu_len * 10) % 10);
ec8aa669	179	ms->len = p - ms->buf;
9208247d	180	WARN_ON(ms->len + sizeof(*ms) > 32768);
11b2357d	181
a0572d93	182	return nonseekable_open(inode, file);
ec8aa669 FF	183	}
	184
	185	static const struct file_operations minstrel_ht_stat_fops = {
	186	.owner = THIS_MODULE,
	187	.open = minstrel_ht_stats_open,
	188	.read = minstrel_stats_read,
	189	.release = minstrel_stats_release,
	190	};
	191
2cae0b6a TH	192	static char *
	193	minstrel_ht_stats_csv_dump(struct minstrel_ht_sta mi, int i, char p)
	194	{
	195	const struct mcs_group *mg;
1109dc39	196	unsigned int j, tp_max, tp_avg, eprob, tx_time;
2cae0b6a TH	197	char htmode = '2';
	198	char gimode = 'L';
	199	u32 gflags;
	200
41d08583	201	if (!mi->supported[i])
2cae0b6a TH	202	return p;
	203
	204	mg = &minstrel_mcs_groups[i];
	205	gflags = mg->flags;
	206
	207	if (gflags & IEEE80211_TX_RC_40_MHZ_WIDTH)
	208	htmode = '4';
	209	else if (gflags & IEEE80211_TX_RC_80_MHZ_WIDTH)
	210	htmode = '8';
	211	if (gflags & IEEE80211_TX_RC_SHORT_GI)
	212	gimode = 'S';
	213
	214	for (j = 0; j < MCS_GROUP_RATES; j++) {
9134073b	215	struct minstrel_rate_stats *mrs = &mi->groups[i].rates[j];
a42fa256	216	int idx = MI_RATE(i, j);
202df504	217	unsigned int duration;
2cae0b6a	218
41d08583	219	if (!(mi->supported[i] & BIT(j)))
2cae0b6a TH	220	continue;
	221
	222	if (gflags & IEEE80211_TX_RC_MCS) {
	223	p += sprintf(p, "HT%c0,", htmode);
	224	p += sprintf(p, "%cGI,", gimode);
	225	p += sprintf(p, "%d,", mg->streams);
	226	} else if (gflags & IEEE80211_TX_RC_VHT_MCS) {
	227	p += sprintf(p, "VHT%c0,", htmode);
	228	p += sprintf(p, "%cGI,", gimode);
	229	p += sprintf(p, "%d,", mg->streams);
a7844a53 FF	230	} else if (i == MINSTREL_OFDM_GROUP) {
a7844a53 FF	231	p += sprintf(p, "OFDM,,1,");
2cae0b6a TH	232	} else {
	233	p += sprintf(p, "CCK,");
	234	p += sprintf(p, "%cP,", j < 4 ? 'L' : 'S');
	235	p += sprintf(p, "1,");
	236	}
	237
	238	p += sprintf(p, "%s" ,((idx == mi->max_tp_rate[0]) ? "A" : ""));
	239	p += sprintf(p, "%s" ,((idx == mi->max_tp_rate[1]) ? "B" : ""));
	240	p += sprintf(p, "%s" ,((idx == mi->max_tp_rate[2]) ? "C" : ""));
	241	p += sprintf(p, "%s" ,((idx == mi->max_tp_rate[3]) ? "D" : ""));
	242	p += sprintf(p, "%s" ,((idx == mi->max_prob_rate) ? "P" : ""));
4a8d0c99	243	p += sprintf(p, "%s", (minstrel_ht_is_sample_rate(mi, idx) ? "S" : ""));
2cae0b6a TH	244
	245	if (gflags & IEEE80211_TX_RC_MCS) {
	246	p += sprintf(p, ",MCS%-2u,", (mg->streams - 1) * 8 + j);
	247	} else if (gflags & IEEE80211_TX_RC_VHT_MCS) {
	248	p += sprintf(p, ",MCS%-1u/%1u,", j, mg->streams);
	249	} else {
a7844a53 FF	250	int r;
	251
	252	if (i == MINSTREL_OFDM_GROUP)
	253	r = minstrel_ofdm_bitrates[j % 8];
	254	else
	255	r = minstrel_cck_bitrates[j % 4];
	256
2cae0b6a TH	257	p += sprintf(p, ",%2u.%1uM,", r / 10, r % 10);
	258	}
	259
	260	p += sprintf(p, "%u,", idx);
202df504 FF	261
	262	duration = mg->duration[j];
	263	duration <<= mg->shift;
	264	tx_time = DIV_ROUND_CLOSEST(duration, 1000);
2cae0b6a TH	265	p += sprintf(p, "%u,", tx_time);
2cae0b6a TH	266
50e55a8e	267	tp_max = minstrel_ht_get_tp_avg(mi, i, j, MINSTREL_FRAC(100, 100));
5f63afe0 FF	268	tp_avg = minstrel_ht_get_tp_avg(mi, i, j, mrs->prob_avg);
5f63afe0 FF	269	eprob = MINSTREL_TRUNC(mrs->prob_avg * 1000);
2cae0b6a	270
506dbf90	271	p += sprintf(p, "%u.%u,%u.%u,%u.%u,%u,%u,"
5f919abc	272	"%u,%llu,%llu,",
50e55a8e	273	tp_max / 10, tp_max % 10,
6a27b2c4	274	tp_avg / 10, tp_avg % 10,
2cae0b6a	275	eprob / 10, eprob % 10,
9134073b TH	276	mrs->retry_count,
	277	mrs->last_success,
	278	mrs->last_attempts,
	279	(unsigned long long)mrs->succ_hist,
	280	(unsigned long long)mrs->att_hist);
2cae0b6a TH	281	p += sprintf(p, "%d,%d,%d.%d\n",
	282	max(0, (int) mi->total_packets -
	283	(int) mi->sample_packets),
	284	mi->sample_packets,
	285	MINSTREL_TRUNC(mi->avg_ampdu_len),
	286	MINSTREL_TRUNC(mi->avg_ampdu_len * 10) % 10);
	287	}
	288
	289	return p;
	290	}
	291
	292	static int
	293	minstrel_ht_stats_csv_open(struct inode inode, struct file file)
	294	{
cbda98c7	295	struct minstrel_ht_sta *mi = inode->i_private;
2cae0b6a TH	296	struct minstrel_debugfs_info *ms;
2cae0b6a TH	297	unsigned int i;
2cae0b6a TH	298	char *p;
2cae0b6a TH	299
2cae0b6a	300	ms = kmalloc(32768, GFP_KERNEL);
2cae0b6a TH	301	if (!ms)
	302	return -ENOMEM;
	303
	304	file->private_data = ms;
	305
	306	p = ms->buf;
	307
	308	p = minstrel_ht_stats_csv_dump(mi, MINSTREL_CCK_GROUP, p);
	309	for (i = 0; i < MINSTREL_CCK_GROUP; i++)
	310	p = minstrel_ht_stats_csv_dump(mi, i, p);
	311	for (i++; i < ARRAY_SIZE(mi->groups); i++)
	312	p = minstrel_ht_stats_csv_dump(mi, i, p);
	313
	314	ms->len = p - ms->buf;
	315	WARN_ON(ms->len + sizeof(*ms) > 32768);
	316
	317	return nonseekable_open(inode, file);
	318	}
	319
	320	static const struct file_operations minstrel_ht_stat_csv_fops = {
	321	.owner = THIS_MODULE,
	322	.open = minstrel_ht_stats_csv_open,
	323	.read = minstrel_stats_read,
	324	.release = minstrel_stats_release,
2cae0b6a TH	325	};
2cae0b6a TH	326
ec8aa669 FF	327	void
	328	minstrel_ht_add_sta_debugfs(void priv, void priv_sta, struct dentry *dir)
	329	{
cbda98c7	330	debugfs_create_file("rc_stats", 0444, dir, priv_sta,
5b5e8731	331	&minstrel_ht_stat_fops);
cbda98c7	332	debugfs_create_file("rc_stats_csv", 0444, dir, priv_sta,
5b5e8731	333	&minstrel_ht_stat_csv_fops);
ec8aa669	334	}