[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]  [avg(tp) avg(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
a0c391b1	89	p += sprintf(p, "%4u.%1u %4u.%1u %3u.%1u %3u.%1u"
5f919abc TH	90	" %3u.%1u %3u %3u %-3u "
5f919abc TH	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");
a0c391b1 JB	132	p += sprintf(p,
	133	" best ____________rate__________ ________statistics________ ________last_______ ______sum-of________\n");
	134	p += sprintf(p,
	135	"mode guard # rate [name idx airtime max_tp] [avg(tp) avg(prob) sd(prob)] [prob.\|retry\|suc\|att] [#success \| #attempts]\n");
11b2357d	136
8a0ee4fe KB	137	p = minstrel_ht_stats_dump(mi, MINSTREL_CCK_GROUP, p);
8a0ee4fe KB	138	for (i = 0; i < MINSTREL_CCK_GROUP; i++)
a0497f9f	139	p = minstrel_ht_stats_dump(mi, i, p);
9208247d KB	140	for (i++; i < ARRAY_SIZE(mi->groups); i++)
9208247d KB	141	p = minstrel_ht_stats_dump(mi, i, p);
ec8aa669	142
ec8aa669 FF	143	p += sprintf(p, "\nTotal packet count:: ideal %d "
	144	"lookaround %d\n",
	145	max(0, (int) mi->total_packets - (int) mi->sample_packets),
	146	mi->sample_packets);
9c00bb72	147	p += sprintf(p, "Average # of aggregated frames per A-MPDU: %d.%d\n",
ec8aa669 FF	148	MINSTREL_TRUNC(mi->avg_ampdu_len),
	149	MINSTREL_TRUNC(mi->avg_ampdu_len * 10) % 10);
	150	ms->len = p - ms->buf;
9208247d	151	WARN_ON(ms->len + sizeof(*ms) > 32768);
11b2357d	152
a0572d93	153	return nonseekable_open(inode, file);
ec8aa669 FF	154	}
	155
	156	static const struct file_operations minstrel_ht_stat_fops = {
	157	.owner = THIS_MODULE,
	158	.open = minstrel_ht_stats_open,
	159	.read = minstrel_stats_read,
	160	.release = minstrel_stats_release,
a0572d93	161	.llseek = no_llseek,
ec8aa669 FF	162	};
ec8aa669 FF	163
2cae0b6a TH	164	static char *
	165	minstrel_ht_stats_csv_dump(struct minstrel_ht_sta mi, int i, char p)
	166	{
	167	const struct mcs_group *mg;
50e55a8e	168	unsigned int j, tp_max, tp_avg, prob, eprob, tx_time;
2cae0b6a TH	169	char htmode = '2';
	170	char gimode = 'L';
	171	u32 gflags;
	172
	173	if (!mi->groups[i].supported)
	174	return p;
	175
	176	mg = &minstrel_mcs_groups[i];
	177	gflags = mg->flags;
	178
	179	if (gflags & IEEE80211_TX_RC_40_MHZ_WIDTH)
	180	htmode = '4';
	181	else if (gflags & IEEE80211_TX_RC_80_MHZ_WIDTH)
	182	htmode = '8';
	183	if (gflags & IEEE80211_TX_RC_SHORT_GI)
	184	gimode = 'S';
	185
	186	for (j = 0; j < MCS_GROUP_RATES; j++) {
9134073b	187	struct minstrel_rate_stats *mrs = &mi->groups[i].rates[j];
2cae0b6a TH	188	static const int bitrates[4] = { 10, 20, 55, 110 };
	189	int idx = i * MCS_GROUP_RATES + j;
	190
	191	if (!(mi->groups[i].supported & BIT(j)))
	192	continue;
	193
	194	if (gflags & IEEE80211_TX_RC_MCS) {
	195	p += sprintf(p, "HT%c0,", htmode);
	196	p += sprintf(p, "%cGI,", gimode);
	197	p += sprintf(p, "%d,", mg->streams);
	198	} else if (gflags & IEEE80211_TX_RC_VHT_MCS) {
	199	p += sprintf(p, "VHT%c0,", htmode);
	200	p += sprintf(p, "%cGI,", gimode);
	201	p += sprintf(p, "%d,", mg->streams);
	202	} else {
	203	p += sprintf(p, "CCK,");
	204	p += sprintf(p, "%cP,", j < 4 ? 'L' : 'S');
	205	p += sprintf(p, "1,");
	206	}
	207
	208	p += sprintf(p, "%s" ,((idx == mi->max_tp_rate[0]) ? "A" : ""));
	209	p += sprintf(p, "%s" ,((idx == mi->max_tp_rate[1]) ? "B" : ""));
	210	p += sprintf(p, "%s" ,((idx == mi->max_tp_rate[2]) ? "C" : ""));
	211	p += sprintf(p, "%s" ,((idx == mi->max_tp_rate[3]) ? "D" : ""));
	212	p += sprintf(p, "%s" ,((idx == mi->max_prob_rate) ? "P" : ""));
	213
	214	if (gflags & IEEE80211_TX_RC_MCS) {
	215	p += sprintf(p, ",MCS%-2u,", (mg->streams - 1) * 8 + j);
	216	} else if (gflags & IEEE80211_TX_RC_VHT_MCS) {
	217	p += sprintf(p, ",MCS%-1u/%1u,", j, mg->streams);
	218	} else {
	219	int r = bitrates[j % 4];
	220	p += sprintf(p, ",%2u.%1uM,", r / 10, r % 10);
	221	}
	222
	223	p += sprintf(p, "%u,", idx);
	224	tx_time = DIV_ROUND_CLOSEST(mg->duration[j], 1000);
	225	p += sprintf(p, "%u,", tx_time);
	226
50e55a8e TH	227	tp_max = minstrel_ht_get_tp_avg(mi, i, j, MINSTREL_FRAC(100, 100));
50e55a8e TH	228	tp_avg = minstrel_ht_get_tp_avg(mi, i, j, mrs->prob_ewma);
9134073b TH	229	prob = MINSTREL_TRUNC(mrs->cur_prob * 1000);
9134073b TH	230	eprob = MINSTREL_TRUNC(mrs->prob_ewma * 1000);
2cae0b6a	231
5f919abc TH	232	p += sprintf(p, "%u.%u,%u.%u,%u.%u,%u.%u,%u.%u,%u,%u,"
5f919abc TH	233	"%u,%llu,%llu,",
50e55a8e	234	tp_max / 10, tp_max % 10,
6a27b2c4	235	tp_avg / 10, tp_avg % 10,
2cae0b6a	236	eprob / 10, eprob % 10,
5f919abc	237	mrs->prob_ewmsd / 10, mrs->prob_ewmsd % 10,
2cae0b6a	238	prob / 10, prob % 10,
9134073b TH	239	mrs->retry_count,
	240	mrs->last_success,
	241	mrs->last_attempts,
	242	(unsigned long long)mrs->succ_hist,
	243	(unsigned long long)mrs->att_hist);
2cae0b6a TH	244	p += sprintf(p, "%d,%d,%d.%d\n",
	245	max(0, (int) mi->total_packets -
	246	(int) mi->sample_packets),
	247	mi->sample_packets,
	248	MINSTREL_TRUNC(mi->avg_ampdu_len),
	249	MINSTREL_TRUNC(mi->avg_ampdu_len * 10) % 10);
	250	}
	251
	252	return p;
	253	}
	254
	255	static int
	256	minstrel_ht_stats_csv_open(struct inode inode, struct file file)
	257	{
	258	struct minstrel_ht_sta_priv *msp = inode->i_private;
	259	struct minstrel_ht_sta *mi = &msp->ht;
	260	struct minstrel_debugfs_info *ms;
	261	unsigned int i;
	262	int ret;
	263	char *p;
	264
	265	if (!msp->is_ht) {
	266	inode->i_private = &msp->legacy;
	267	ret = minstrel_stats_csv_open(inode, file);
	268	inode->i_private = msp;
	269	return ret;
	270	}
	271
	272	ms = kmalloc(32768, GFP_KERNEL);
	273
	274	if (!ms)
	275	return -ENOMEM;
	276
	277	file->private_data = ms;
	278
	279	p = ms->buf;
	280
	281	p = minstrel_ht_stats_csv_dump(mi, MINSTREL_CCK_GROUP, p);
	282	for (i = 0; i < MINSTREL_CCK_GROUP; i++)
	283	p = minstrel_ht_stats_csv_dump(mi, i, p);
	284	for (i++; i < ARRAY_SIZE(mi->groups); i++)
	285	p = minstrel_ht_stats_csv_dump(mi, i, p);
	286
	287	ms->len = p - ms->buf;
	288	WARN_ON(ms->len + sizeof(*ms) > 32768);
	289
	290	return nonseekable_open(inode, file);
	291	}
	292
	293	static const struct file_operations minstrel_ht_stat_csv_fops = {
	294	.owner = THIS_MODULE,
	295	.open = minstrel_ht_stats_csv_open,
	296	.read = minstrel_stats_read,
	297	.release = minstrel_stats_release,
	298	.llseek = no_llseek,
	299	};
	300
ec8aa669 FF	301	void
	302	minstrel_ht_add_sta_debugfs(void priv, void priv_sta, struct dentry *dir)
	303	{
	304	struct minstrel_ht_sta_priv *msp = priv_sta;
	305
	306	msp->dbg_stats = debugfs_create_file("rc_stats", S_IRUGO, dir, msp,
	307	&minstrel_ht_stat_fops);
2cae0b6a TH	308	msp->dbg_stats_csv = debugfs_create_file("rc_stats_csv", S_IRUGO,
2cae0b6a TH	309	dir, msp, &minstrel_ht_stat_csv_fops);
ec8aa669 FF	310	}
	311
	312	void
	313	minstrel_ht_remove_sta_debugfs(void priv, void priv_sta)
	314	{
	315	struct minstrel_ht_sta_priv *msp = priv_sta;
	316
	317	debugfs_remove(msp->dbg_stats);
2cae0b6a	318	debugfs_remove(msp->dbg_stats_csv);
ec8aa669	319	}