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

/*
 * 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, prob, eprob, tx_time;
	char htmode = '2';
	char gimode = 'L';
	u32 gflags;

	if (!mi->groups[i].supported)
		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;

		if (!(mi->groups[i].supported & 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);
		prob = MINSTREL_TRUNC(mrs->cur_prob * 1000);
		eprob = MINSTREL_TRUNC(mrs->prob_ewma * 1000);

		p += sprintf(p, "%4u.%1u   %4u.%1u   %3u.%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,
				mrs->prob_ewmsd / 10, mrs->prob_ewmsd % 10,
				prob / 10, prob % 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]  "
			"[ ø(tp) ø(prob) sd(prob)]  [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, prob, eprob, tx_time;
	char htmode = '2';
	char gimode = 'L';
	u32 gflags;

	if (!mi->groups[i].supported)
		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;

		if (!(mi->groups[i].supported & 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);
		prob = MINSTREL_TRUNC(mrs->cur_prob * 1000);
		eprob = MINSTREL_TRUNC(mrs->prob_ewma * 1000);

		p += sprintf(p, "%u.%u,%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,
				mrs->prob_ewmsd / 10, mrs->prob_ewmsd % 10,
				prob / 10, prob % 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", S_IRUGO, dir, msp,
			&minstrel_ht_stat_fops);
	msp->dbg_stats_csv = debugfs_create_file("rc_stats_csv", S_IRUGO,
			     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);
}
Commit	Line	Data
ec8aa669 FF	1	/*
	2	* Copyright (C) 2010 Felix Fietkau <nbd@openwrt.org>
	3	*
	4	* This program is free software; you can redistribute it and/or modify
	5	* it under the terms of the GNU General Public License version 2 as
	6	* published by the Free Software Foundation.
	7	*/
	8	#include <linux/netdevice.h>
	9	#include <linux/types.h>
	10	#include <linux/skbuff.h>
	11	#include <linux/debugfs.h>
	12	#include <linux/ieee80211.h>
bc3b2d7f	13	#include <linux/export.h>
ec8aa669 FF	14	#include <net/mac80211.h>
	15	#include "rc80211_minstrel.h"
	16	#include "rc80211_minstrel_ht.h"
	17
a0497f9f FF	18	static char *
	19	minstrel_ht_stats_dump(struct minstrel_ht_sta mi, int i, char p)
	20	{
a0497f9f	21	const struct mcs_group *mg;
50e55a8e	22	unsigned int j, tp_max, tp_avg, prob, eprob, tx_time;
a0497f9f FF	23	char htmode = '2';
a0497f9f FF	24	char gimode = 'L';
8ec7886b	25	u32 gflags;
a0497f9f FF	26
	27	if (!mi->groups[i].supported)
	28	return p;
	29
	30	mg = &minstrel_mcs_groups[i];
8ec7886b KB	31	gflags = mg->flags;
	32
	33	if (gflags & IEEE80211_TX_RC_40_MHZ_WIDTH)
a0497f9f	34	htmode = '4';
8ec7886b	35	else if (gflags & IEEE80211_TX_RC_80_MHZ_WIDTH)
9208247d	36	htmode = '8';
8ec7886b	37	if (gflags & IEEE80211_TX_RC_SHORT_GI)
a0497f9f FF	38	gimode = 'S';
	39
	40	for (j = 0; j < MCS_GROUP_RATES; j++) {
9134073b	41	struct minstrel_rate_stats *mrs = &mi->groups[i].rates[j];
a0497f9f FF	42	static const int bitrates[4] = { 10, 20, 55, 110 };
	43	int idx = i * MCS_GROUP_RATES + j;
	44
	45	if (!(mi->groups[i].supported & BIT(j)))
	46	continue;
	47
9c00bb72 TH	48	if (gflags & IEEE80211_TX_RC_MCS) {
	49	p += sprintf(p, "HT%c0 ", htmode);
	50	p += sprintf(p, "%cGI ", gimode);
	51	p += sprintf(p, "%d ", mg->streams);
	52	} else if (gflags & IEEE80211_TX_RC_VHT_MCS) {
	53	p += sprintf(p, "VHT%c0 ", htmode);
	54	p += sprintf(p, "%cGI ", gimode);
	55	p += sprintf(p, "%d ", mg->streams);
	56	} else {
	57	p += sprintf(p, "CCK ");
	58	p += sprintf(p, "%cP ", j < 4 ? 'L' : 'S');
	59	p += sprintf(p, "1 ");
	60	}
a0497f9f	61
5935839a TH	62	*(p++) = (idx == mi->max_tp_rate[0]) ? 'A' : ' ';
	63	*(p++) = (idx == mi->max_tp_rate[1]) ? 'B' : ' ';
	64	*(p++) = (idx == mi->max_tp_rate[2]) ? 'C' : ' ';
	65	*(p++) = (idx == mi->max_tp_rate[3]) ? 'D' : ' ';
a0497f9f FF	66	*(p++) = (idx == mi->max_prob_rate) ? 'P' : ' ';
a0497f9f FF	67
8ec7886b	68	if (gflags & IEEE80211_TX_RC_MCS) {
9c00bb72	69	p += sprintf(p, " MCS%-2u", (mg->streams - 1) * 8 + j);
8ec7886b	70	} else if (gflags & IEEE80211_TX_RC_VHT_MCS) {
9c00bb72	71	p += sprintf(p, " MCS%-1u/%1u", j, mg->streams);
a0497f9f	72	} else {
8ec7886b KB	73	int r = bitrates[j % 4];
8ec7886b KB	74
9c00bb72	75	p += sprintf(p, " %2u.%1uM", r / 10, r % 10);
a0497f9f FF	76	}
a0497f9f FF	77
9c00bb72 TH	78	p += sprintf(p, " %3u ", idx);
	79
	80	/* tx_time[rate(i)] in usec */
	81	tx_time = DIV_ROUND_CLOSEST(mg->duration[j], 1000);
50e55a8e	82	p += sprintf(p, "%6u ", tx_time);
9c00bb72	83
50e55a8e TH	84	tp_max = minstrel_ht_get_tp_avg(mi, i, j, MINSTREL_FRAC(100, 100));
50e55a8e TH	85	tp_avg = minstrel_ht_get_tp_avg(mi, i, j, mrs->prob_ewma);
9134073b TH	86	prob = MINSTREL_TRUNC(mrs->cur_prob * 1000);
9134073b TH	87	eprob = MINSTREL_TRUNC(mrs->prob_ewma * 1000);
a0497f9f	88
5f919abc TH	89	p += sprintf(p, "%4u.%1u %4u.%1u %3u.%1u %3u.%1u"
	90	" %3u.%1u %3u %3u %-3u "
	91	"%9llu %-9llu\n",
50e55a8e	92	tp_max / 10, tp_max % 10,
6a27b2c4	93	tp_avg / 10, tp_avg % 10,
a0497f9f	94	eprob / 10, eprob % 10,
5f919abc	95	mrs->prob_ewmsd / 10, mrs->prob_ewmsd % 10,
a0497f9f	96	prob / 10, prob % 10,
9134073b TH	97	mrs->retry_count,
	98	mrs->last_success,
	99	mrs->last_attempts,
	100	(unsigned long long)mrs->succ_hist,
	101	(unsigned long long)mrs->att_hist);
a0497f9f FF	102	}
	103
	104	return p;
	105	}
	106
ec8aa669 FF	107	static int
	108	minstrel_ht_stats_open(struct inode inode, struct file file)
	109	{
	110	struct minstrel_ht_sta_priv *msp = inode->i_private;
	111	struct minstrel_ht_sta *mi = &msp->ht;
	112	struct minstrel_debugfs_info *ms;
a0497f9f	113	unsigned int i;
ec8aa669	114	int ret;
2cae0b6a	115	char *p;
ec8aa669 FF	116
	117	if (!msp->is_ht) {
	118	inode->i_private = &msp->legacy;
	119	ret = minstrel_stats_open(inode, file);
	120	inode->i_private = msp;
	121	return ret;
	122	}
	123
9208247d	124	ms = kmalloc(32768, GFP_KERNEL);
ec8aa669 FF	125	if (!ms)
	126	return -ENOMEM;
	127
	128	file->private_data = ms;
	129	p = ms->buf;
9c00bb72 TH	130
9c00bb72 TH	131	p += sprintf(p, "\n");
50e55a8e	132	p += sprintf(p, " best ____________rate__________ "
5f919abc	133	"______statistics______ ________last_______ "
9c00bb72	134	"______sum-of________\n");
50e55a8e	135	p += sprintf(p, "mode guard # rate [name idx airtime max_tp] "
5f919abc	136	"[ ø(tp) ø(prob) sd(prob)] [prob.\|retry\|suc\|att] [#success \| "
9c00bb72	137	"#attempts]\n");
11b2357d	138
8a0ee4fe KB	139	p = minstrel_ht_stats_dump(mi, MINSTREL_CCK_GROUP, p);
8a0ee4fe KB	140	for (i = 0; i < MINSTREL_CCK_GROUP; i++)
a0497f9f	141	p = minstrel_ht_stats_dump(mi, i, p);
9208247d KB	142	for (i++; i < ARRAY_SIZE(mi->groups); i++)
9208247d KB	143	p = minstrel_ht_stats_dump(mi, i, p);
ec8aa669	144
ec8aa669 FF	145	p += sprintf(p, "\nTotal packet count:: ideal %d "
	146	"lookaround %d\n",
	147	max(0, (int) mi->total_packets - (int) mi->sample_packets),
	148	mi->sample_packets);
9c00bb72	149	p += sprintf(p, "Average # of aggregated frames per A-MPDU: %d.%d\n",
ec8aa669 FF	150	MINSTREL_TRUNC(mi->avg_ampdu_len),
	151	MINSTREL_TRUNC(mi->avg_ampdu_len * 10) % 10);
	152	ms->len = p - ms->buf;
9208247d	153	WARN_ON(ms->len + sizeof(*ms) > 32768);
11b2357d	154
a0572d93	155	return nonseekable_open(inode, file);
ec8aa669 FF	156	}
	157
	158	static const struct file_operations minstrel_ht_stat_fops = {
	159	.owner = THIS_MODULE,
	160	.open = minstrel_ht_stats_open,
	161	.read = minstrel_stats_read,
	162	.release = minstrel_stats_release,
a0572d93	163	.llseek = no_llseek,
ec8aa669 FF	164	};
ec8aa669 FF	165
2cae0b6a TH	166	static char *
	167	minstrel_ht_stats_csv_dump(struct minstrel_ht_sta mi, int i, char p)
	168	{
	169	const struct mcs_group *mg;
50e55a8e	170	unsigned int j, tp_max, tp_avg, prob, eprob, tx_time;
2cae0b6a TH	171	char htmode = '2';
	172	char gimode = 'L';
	173	u32 gflags;
	174
	175	if (!mi->groups[i].supported)
	176	return p;
	177
	178	mg = &minstrel_mcs_groups[i];
	179	gflags = mg->flags;
	180
	181	if (gflags & IEEE80211_TX_RC_40_MHZ_WIDTH)
	182	htmode = '4';
	183	else if (gflags & IEEE80211_TX_RC_80_MHZ_WIDTH)
	184	htmode = '8';
	185	if (gflags & IEEE80211_TX_RC_SHORT_GI)
	186	gimode = 'S';
	187
	188	for (j = 0; j < MCS_GROUP_RATES; j++) {
9134073b	189	struct minstrel_rate_stats *mrs = &mi->groups[i].rates[j];
2cae0b6a TH	190	static const int bitrates[4] = { 10, 20, 55, 110 };
	191	int idx = i * MCS_GROUP_RATES + j;
	192
	193	if (!(mi->groups[i].supported & BIT(j)))
	194	continue;
	195
	196	if (gflags & IEEE80211_TX_RC_MCS) {
	197	p += sprintf(p, "HT%c0,", htmode);
	198	p += sprintf(p, "%cGI,", gimode);
	199	p += sprintf(p, "%d,", mg->streams);
	200	} else if (gflags & IEEE80211_TX_RC_VHT_MCS) {
	201	p += sprintf(p, "VHT%c0,", htmode);
	202	p += sprintf(p, "%cGI,", gimode);
	203	p += sprintf(p, "%d,", mg->streams);
	204	} else {
	205	p += sprintf(p, "CCK,");
	206	p += sprintf(p, "%cP,", j < 4 ? 'L' : 'S');
	207	p += sprintf(p, "1,");
	208	}
	209
	210	p += sprintf(p, "%s" ,((idx == mi->max_tp_rate[0]) ? "A" : ""));
	211	p += sprintf(p, "%s" ,((idx == mi->max_tp_rate[1]) ? "B" : ""));
	212	p += sprintf(p, "%s" ,((idx == mi->max_tp_rate[2]) ? "C" : ""));
	213	p += sprintf(p, "%s" ,((idx == mi->max_tp_rate[3]) ? "D" : ""));
	214	p += sprintf(p, "%s" ,((idx == mi->max_prob_rate) ? "P" : ""));
	215
	216	if (gflags & IEEE80211_TX_RC_MCS) {
	217	p += sprintf(p, ",MCS%-2u,", (mg->streams - 1) * 8 + j);
	218	} else if (gflags & IEEE80211_TX_RC_VHT_MCS) {
	219	p += sprintf(p, ",MCS%-1u/%1u,", j, mg->streams);
	220	} else {
	221	int r = bitrates[j % 4];
	222	p += sprintf(p, ",%2u.%1uM,", r / 10, r % 10);
	223	}
	224
	225	p += sprintf(p, "%u,", idx);
	226	tx_time = DIV_ROUND_CLOSEST(mg->duration[j], 1000);
	227	p += sprintf(p, "%u,", tx_time);
	228
50e55a8e TH	229	tp_max = minstrel_ht_get_tp_avg(mi, i, j, MINSTREL_FRAC(100, 100));
50e55a8e TH	230	tp_avg = minstrel_ht_get_tp_avg(mi, i, j, mrs->prob_ewma);
9134073b TH	231	prob = MINSTREL_TRUNC(mrs->cur_prob * 1000);
9134073b TH	232	eprob = MINSTREL_TRUNC(mrs->prob_ewma * 1000);
2cae0b6a	233
5f919abc TH	234	p += sprintf(p, "%u.%u,%u.%u,%u.%u,%u.%u,%u.%u,%u,%u,"
5f919abc TH	235	"%u,%llu,%llu,",
50e55a8e	236	tp_max / 10, tp_max % 10,
6a27b2c4	237	tp_avg / 10, tp_avg % 10,
2cae0b6a	238	eprob / 10, eprob % 10,
5f919abc	239	mrs->prob_ewmsd / 10, mrs->prob_ewmsd % 10,
2cae0b6a	240	prob / 10, prob % 10,
9134073b TH	241	mrs->retry_count,
	242	mrs->last_success,
	243	mrs->last_attempts,
	244	(unsigned long long)mrs->succ_hist,
	245	(unsigned long long)mrs->att_hist);
2cae0b6a TH	246	p += sprintf(p, "%d,%d,%d.%d\n",
	247	max(0, (int) mi->total_packets -
	248	(int) mi->sample_packets),
	249	mi->sample_packets,
	250	MINSTREL_TRUNC(mi->avg_ampdu_len),
	251	MINSTREL_TRUNC(mi->avg_ampdu_len * 10) % 10);
	252	}
	253
	254	return p;
	255	}
	256
	257	static int
	258	minstrel_ht_stats_csv_open(struct inode inode, struct file file)
	259	{
	260	struct minstrel_ht_sta_priv *msp = inode->i_private;
	261	struct minstrel_ht_sta *mi = &msp->ht;
	262	struct minstrel_debugfs_info *ms;
	263	unsigned int i;
	264	int ret;
	265	char *p;
	266
	267	if (!msp->is_ht) {
	268	inode->i_private = &msp->legacy;
	269	ret = minstrel_stats_csv_open(inode, file);
	270	inode->i_private = msp;
	271	return ret;
	272	}
	273
	274	ms = kmalloc(32768, GFP_KERNEL);
	275
	276	if (!ms)
	277	return -ENOMEM;
	278
	279	file->private_data = ms;
	280
	281	p = ms->buf;
	282
	283	p = minstrel_ht_stats_csv_dump(mi, MINSTREL_CCK_GROUP, p);
	284	for (i = 0; i < MINSTREL_CCK_GROUP; i++)
	285	p = minstrel_ht_stats_csv_dump(mi, i, p);
	286	for (i++; i < ARRAY_SIZE(mi->groups); i++)
	287	p = minstrel_ht_stats_csv_dump(mi, i, p);
	288
	289	ms->len = p - ms->buf;
	290	WARN_ON(ms->len + sizeof(*ms) > 32768);
	291
	292	return nonseekable_open(inode, file);
	293	}
	294
	295	static const struct file_operations minstrel_ht_stat_csv_fops = {
	296	.owner = THIS_MODULE,
	297	.open = minstrel_ht_stats_csv_open,
	298	.read = minstrel_stats_read,
	299	.release = minstrel_stats_release,
	300	.llseek = no_llseek,
	301	};
	302
ec8aa669 FF	303	void
	304	minstrel_ht_add_sta_debugfs(void priv, void priv_sta, struct dentry *dir)
	305	{
	306	struct minstrel_ht_sta_priv *msp = priv_sta;
	307
	308	msp->dbg_stats = debugfs_create_file("rc_stats", S_IRUGO, dir, msp,
	309	&minstrel_ht_stat_fops);
2cae0b6a TH	310	msp->dbg_stats_csv = debugfs_create_file("rc_stats_csv", S_IRUGO,
2cae0b6a TH	311	dir, msp, &minstrel_ht_stat_csv_fops);
ec8aa669 FF	312	}
	313
	314	void
	315	minstrel_ht_remove_sta_debugfs(void priv, void priv_sta)
	316	{
	317	struct minstrel_ht_sta_priv *msp = priv_sta;
	318
	319	debugfs_remove(msp->dbg_stats);
2cae0b6a	320	debugfs_remove(msp->dbg_stats_csv);
ec8aa669	321	}