[mirror_ubuntu-bionic-kernel.git] / net / mac80211 / rc80211_minstrel_debugfs.c

/*
 * Copyright (C) 2008 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.
 *
 * Based on minstrel.c:
 *   Copyright (C) 2005-2007 Derek Smithies <derek@indranet.co.nz>
 *   Sponsored by Indranet Technologies Ltd
 *
 * Based on sample.c:
 *   Copyright (c) 2005 John Bicket
 *   All rights reserved.
 *
 *   Redistribution and use in source and binary forms, with or without
 *   modification, are permitted provided that the following conditions
 *   are met:
 *   1. Redistributions of source code must retain the above copyright
 *      notice, this list of conditions and the following disclaimer,
 *      without modification.
 *   2. Redistributions in binary form must reproduce at minimum a disclaimer
 *      similar to the "NO WARRANTY" disclaimer below ("Disclaimer") and any
 *      redistribution must be conditioned upon including a substantially
 *      similar Disclaimer requirement for further binary redistribution.
 *   3. Neither the names of the above-listed copyright holders nor the names
 *      of any contributors may be used to endorse or promote products derived
 *      from this software without specific prior written permission.
 *
 *   Alternatively, this software may be distributed under the terms of the
 *   GNU General Public License ("GPL") version 2 as published by the Free
 *   Software Foundation.
 *
 *   NO WARRANTY
 *   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 *   ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 *   LIMITED TO, THE IMPLIED WARRANTIES OF NONINFRINGEMENT, MERCHANTIBILITY
 *   AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
 *   THE COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY,
 *   OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 *   SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 *   INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER
 *   IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 *   ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
 *   THE POSSIBILITY OF SUCH DAMAGES.
 */
#include <linux/netdevice.h>
#include <linux/types.h>
#include <linux/skbuff.h>
#include <linux/debugfs.h>
#include <linux/ieee80211.h>
#include <linux/slab.h>
#include <linux/export.h>
#include <net/mac80211.h>
#include "rc80211_minstrel.h"

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);
}

int
minstrel_stats_release(struct inode *inode, struct file *file)
{
	kfree(file->private_data);
	return 0;
}

int
minstrel_stats_open(struct inode *inode, struct file *file)
{
	struct minstrel_sta_info *mi = inode->i_private;
	struct minstrel_debugfs_info *ms;
	unsigned int i, tp_avg, prob, eprob;
	char *p;

	ms = kmalloc(2048, 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, "rate  [name idx airtime]  [ ø(tp) ø(prob)]  "
			"[prob.|retry|suc|att]  [#success | #attempts]\n");

	for (i = 0; i < mi->n_rates; i++) {
		struct minstrel_rate *mr = &mi->r[i];
		struct minstrel_rate_stats *mrs = &mi->r[i].stats;

		*(p++) = (i == mi->max_tp_rate[0]) ? 'A' : ' ';
		*(p++) = (i == mi->max_tp_rate[1]) ? 'B' : ' ';
		*(p++) = (i == mi->max_tp_rate[2]) ? 'C' : ' ';
		*(p++) = (i == mi->max_tp_rate[3]) ? 'D' : ' ';
		*(p++) = (i == mi->max_prob_rate) ? 'P' : ' ';

		p += sprintf(p, " %3u%s ", mr->bitrate / 2,
				(mr->bitrate & 1 ? ".5" : "  "));
		p += sprintf(p, "%3u  ", i);
		p += sprintf(p, "%6u  ", mr->perfect_tx_time);

		tp_avg = minstrel_get_tp_avg(mr);
		prob = MINSTREL_TRUNC(mrs->cur_prob * 1000);
		eprob = MINSTREL_TRUNC(mrs->prob_ewma * 1000);

		p += sprintf(p, " %4u.%1u   %3u.%1u     %3u.%1u %3u"
				"   %3u %-3u   %9llu   %-9llu\n",
				tp_avg / 10, tp_avg % 10,
				eprob / 10, eprob % 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, "\nTotal packet count::    ideal %d      "
			"lookaround %d\n\n",
			mi->total_packets - mi->sample_packets,
			mi->sample_packets);
	ms->len = p - ms->buf;

	WARN_ON(ms->len + sizeof(*ms) > 2048);

	return 0;
}

static const struct file_operations minstrel_stat_fops = {
	.owner = THIS_MODULE,
	.open = minstrel_stats_open,
	.read = minstrel_stats_read,
	.release = minstrel_stats_release,
	.llseek = default_llseek,
};

int
minstrel_stats_csv_open(struct inode *inode, struct file *file)
{
	struct minstrel_sta_info *mi = inode->i_private;
	struct minstrel_debugfs_info *ms;
	unsigned int i, tp_avg, prob, eprob;
	char *p;

	ms = kmalloc(2048, GFP_KERNEL);
	if (!ms)
		return -ENOMEM;

	file->private_data = ms;
	p = ms->buf;

	for (i = 0; i < mi->n_rates; i++) {
		struct minstrel_rate *mr = &mi->r[i];
		struct minstrel_rate_stats *mrs = &mi->r[i].stats;

		p += sprintf(p, "%s" ,((i == mi->max_tp_rate[0]) ? "A" : ""));
		p += sprintf(p, "%s" ,((i == mi->max_tp_rate[1]) ? "B" : ""));
		p += sprintf(p, "%s" ,((i == mi->max_tp_rate[2]) ? "C" : ""));
		p += sprintf(p, "%s" ,((i == mi->max_tp_rate[3]) ? "D" : ""));
		p += sprintf(p, "%s" ,((i == mi->max_prob_rate) ? "P" : ""));

		p += sprintf(p, ",%u%s", mr->bitrate / 2,
				(mr->bitrate & 1 ? ".5," : ","));
		p += sprintf(p, "%u,", i);
		p += sprintf(p, "%u,",mr->perfect_tx_time);

		tp_avg = minstrel_get_tp_avg(mr);
		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,"
				"%llu,%llu,%d,%d\n",
				tp_avg / 10, tp_avg % 10,
				eprob / 10, eprob % 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,
				mi->total_packets - mi->sample_packets,
				mi->sample_packets);

	}
	ms->len = p - ms->buf;

	WARN_ON(ms->len + sizeof(*ms) > 2048);

	return 0;
}

static const struct file_operations minstrel_stat_csv_fops = {
	.owner = THIS_MODULE,
	.open = minstrel_stats_csv_open,
	.read = minstrel_stats_read,
	.release = minstrel_stats_release,
	.llseek = default_llseek,
};

void
minstrel_add_sta_debugfs(void *priv, void *priv_sta, struct dentry *dir)
{
	struct minstrel_sta_info *mi = priv_sta;

	mi->dbg_stats = debugfs_create_file("rc_stats", S_IRUGO, dir, mi,
			&minstrel_stat_fops);

	mi->dbg_stats_csv = debugfs_create_file("rc_stats_csv", S_IRUGO, dir,
			mi, &minstrel_stat_csv_fops);
}

void
minstrel_remove_sta_debugfs(void *priv, void *priv_sta)
{
	struct minstrel_sta_info *mi = priv_sta;

	debugfs_remove(mi->dbg_stats);

	debugfs_remove(mi->dbg_stats_csv);
}
Commit	Line	Data
cccf129f FF	1	/*
	2	* Copyright (C) 2008 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	* Based on minstrel.c:
	9	* Copyright (C) 2005-2007 Derek Smithies <derek@indranet.co.nz>
	10	* Sponsored by Indranet Technologies Ltd
	11	*
	12	* Based on sample.c:
	13	* Copyright (c) 2005 John Bicket
	14	* All rights reserved.
	15	*
	16	* Redistribution and use in source and binary forms, with or without
	17	* modification, are permitted provided that the following conditions
	18	* are met:
	19	* 1. Redistributions of source code must retain the above copyright
	20	* notice, this list of conditions and the following disclaimer,
	21	* without modification.
	22	* 2. Redistributions in binary form must reproduce at minimum a disclaimer
	23	* similar to the "NO WARRANTY" disclaimer below ("Disclaimer") and any
	24	* redistribution must be conditioned upon including a substantially
	25	* similar Disclaimer requirement for further binary redistribution.
	26	* 3. Neither the names of the above-listed copyright holders nor the names
	27	* of any contributors may be used to endorse or promote products derived
	28	* from this software without specific prior written permission.
	29	*
	30	* Alternatively, this software may be distributed under the terms of the
	31	* GNU General Public License ("GPL") version 2 as published by the Free
	32	* Software Foundation.
	33	*
	34	* NO WARRANTY
	35	* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
	36	* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
	37	* LIMITED TO, THE IMPLIED WARRANTIES OF NONINFRINGEMENT, MERCHANTIBILITY
	38	* AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
	39	* THE COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY,
	40	* OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
	41	* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
	42	* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER
	43	* IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
	44	* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
	45	* THE POSSIBILITY OF SUCH DAMAGES.
	46	*/
	47	#include <linux/netdevice.h>
	48	#include <linux/types.h>
	49	#include <linux/skbuff.h>
	50	#include <linux/debugfs.h>
	51	#include <linux/ieee80211.h>
5a0e3ad6	52	#include <linux/slab.h>
bc3b2d7f	53	#include <linux/export.h>
cccf129f FF	54	#include <net/mac80211.h>
	55	#include "rc80211_minstrel.h"
	56
6d488517 TH	57	ssize_t
	58	minstrel_stats_read(struct file file, char __user buf, size_t len, loff_t *ppos)
	59	{
	60	struct minstrel_debugfs_info *ms;
	61
	62	ms = file->private_data;
	63	return simple_read_from_buffer(buf, len, ppos, ms->buf, ms->len);
	64	}
	65
	66	int
	67	minstrel_stats_release(struct inode inode, struct file file)
	68	{
	69	kfree(file->private_data);
	70	return 0;
	71	}
	72
eae44756	73	int
cccf129f FF	74	minstrel_stats_open(struct inode inode, struct file file)
	75	{
	76	struct minstrel_sta_info *mi = inode->i_private;
44ac91ea	77	struct minstrel_debugfs_info *ms;
6a27b2c4	78	unsigned int i, tp_avg, prob, eprob;
cccf129f FF	79	char *p;
cccf129f FF	80
11b2357d	81	ms = kmalloc(2048, GFP_KERNEL);
cccf129f FF	82	if (!ms)
	83	return -ENOMEM;
	84
	85	file->private_data = ms;
	86	p = ms->buf;
e161f7f6 TH	87	p += sprintf(p, "\n");
	88	p += sprintf(p, "best _______rate_____ __statistics__ "
	89	"________last_______ ______sum-of________\n");
	90	p += sprintf(p, "rate [name idx airtime] [ ø(tp) ø(prob)] "
	91	"[prob.\|retry\|suc\|att] [#success \| #attempts]\n");
	92
cccf129f FF	93	for (i = 0; i < mi->n_rates; i++) {
cccf129f FF	94	struct minstrel_rate *mr = &mi->r[i];
ca12c0c8	95	struct minstrel_rate_stats *mrs = &mi->r[i].stats;
cccf129f	96
2ff2b690 TH	97	*(p++) = (i == mi->max_tp_rate[0]) ? 'A' : ' ';
	98	*(p++) = (i == mi->max_tp_rate[1]) ? 'B' : ' ';
	99	*(p++) = (i == mi->max_tp_rate[2]) ? 'C' : ' ';
	100	*(p++) = (i == mi->max_tp_rate[3]) ? 'D' : ' ';
cccf129f	101	*(p++) = (i == mi->max_prob_rate) ? 'P' : ' ';
e161f7f6 TH	102
e161f7f6 TH	103	p += sprintf(p, " %3u%s ", mr->bitrate / 2,
cccf129f	104	(mr->bitrate & 1 ? ".5" : " "));
e161f7f6 TH	105	p += sprintf(p, "%3u ", i);
e161f7f6 TH	106	p += sprintf(p, "%6u ", mr->perfect_tx_time);
cccf129f	107
6a27b2c4	108	tp_avg = minstrel_get_tp_avg(mr);
ca12c0c8	109	prob = MINSTREL_TRUNC(mrs->cur_prob * 1000);
9134073b	110	eprob = MINSTREL_TRUNC(mrs->prob_ewma * 1000);
cccf129f	111
e161f7f6 TH	112	p += sprintf(p, " %4u.%1u %3u.%1u %3u.%1u %3u"
e161f7f6 TH	113	" %3u %-3u %9llu %-9llu\n",
6a27b2c4	114	tp_avg / 10, tp_avg % 10,
cccf129f FF	115	eprob / 10, eprob % 10,
cccf129f FF	116	prob / 10, prob % 10,
e161f7f6	117	mrs->retry_count,
ca12c0c8 TH	118	mrs->last_success,
	119	mrs->last_attempts,
	120	(unsigned long long)mrs->succ_hist,
	121	(unsigned long long)mrs->att_hist);
cccf129f FF	122	}
	123	p += sprintf(p, "\nTotal packet count:: ideal %d "
	124	"lookaround %d\n\n",
ca12c0c8 TH	125	mi->total_packets - mi->sample_packets,
ca12c0c8 TH	126	mi->sample_packets);
cccf129f FF	127	ms->len = p - ms->buf;
cccf129f FF	128
11b2357d KB	129	WARN_ON(ms->len + sizeof(*ms) > 2048);
11b2357d KB	130
cccf129f FF	131	return 0;
	132	}
	133
6d488517 TH	134	static const struct file_operations minstrel_stat_fops = {
	135	.owner = THIS_MODULE,
	136	.open = minstrel_stats_open,
	137	.read = minstrel_stats_read,
	138	.release = minstrel_stats_release,
	139	.llseek = default_llseek,
	140	};
	141
	142	int
	143	minstrel_stats_csv_open(struct inode inode, struct file file)
cccf129f	144	{
6d488517	145	struct minstrel_sta_info *mi = inode->i_private;
44ac91ea	146	struct minstrel_debugfs_info *ms;
6a27b2c4	147	unsigned int i, tp_avg, prob, eprob;
6d488517	148	char *p;
cccf129f	149
6d488517 TH	150	ms = kmalloc(2048, GFP_KERNEL);
	151	if (!ms)
	152	return -ENOMEM;
	153
	154	file->private_data = ms;
	155	p = ms->buf;
	156
	157	for (i = 0; i < mi->n_rates; i++) {
	158	struct minstrel_rate *mr = &mi->r[i];
	159	struct minstrel_rate_stats *mrs = &mi->r[i].stats;
	160
	161	p += sprintf(p, "%s" ,((i == mi->max_tp_rate[0]) ? "A" : ""));
	162	p += sprintf(p, "%s" ,((i == mi->max_tp_rate[1]) ? "B" : ""));
	163	p += sprintf(p, "%s" ,((i == mi->max_tp_rate[2]) ? "C" : ""));
	164	p += sprintf(p, "%s" ,((i == mi->max_tp_rate[3]) ? "D" : ""));
	165	p += sprintf(p, "%s" ,((i == mi->max_prob_rate) ? "P" : ""));
	166
	167	p += sprintf(p, ",%u%s", mr->bitrate / 2,
	168	(mr->bitrate & 1 ? ".5," : ","));
	169	p += sprintf(p, "%u,", i);
	170	p += sprintf(p, "%u,",mr->perfect_tx_time);
	171
6a27b2c4	172	tp_avg = minstrel_get_tp_avg(mr);
6d488517	173	prob = MINSTREL_TRUNC(mrs->cur_prob * 1000);
9134073b	174	eprob = MINSTREL_TRUNC(mrs->prob_ewma * 1000);
6d488517 TH	175
	176	p += sprintf(p, "%u.%u,%u.%u,%u.%u,%u,%u,%u,"
	177	"%llu,%llu,%d,%d\n",
6a27b2c4	178	tp_avg / 10, tp_avg % 10,
6d488517 TH	179	eprob / 10, eprob % 10,
	180	prob / 10, prob % 10,
	181	mrs->retry_count,
	182	mrs->last_success,
	183	mrs->last_attempts,
	184	(unsigned long long)mrs->succ_hist,
	185	(unsigned long long)mrs->att_hist,
	186	mi->total_packets - mi->sample_packets,
	187	mi->sample_packets);
	188
	189	}
	190	ms->len = p - ms->buf;
	191
	192	WARN_ON(ms->len + sizeof(*ms) > 2048);
cccf129f	193
cccf129f FF	194	return 0;
	195	}
	196
6d488517	197	static const struct file_operations minstrel_stat_csv_fops = {
cccf129f	198	.owner = THIS_MODULE,
6d488517	199	.open = minstrel_stats_csv_open,
cccf129f FF	200	.read = minstrel_stats_read,
cccf129f FF	201	.release = minstrel_stats_release,
6038f373	202	.llseek = default_llseek,
cccf129f FF	203	};
	204
	205	void
	206	minstrel_add_sta_debugfs(void priv, void priv_sta, struct dentry *dir)
	207	{
	208	struct minstrel_sta_info *mi = priv_sta;
	209
	210	mi->dbg_stats = debugfs_create_file("rc_stats", S_IRUGO, dir, mi,
	211	&minstrel_stat_fops);
6d488517 TH	212
	213	mi->dbg_stats_csv = debugfs_create_file("rc_stats_csv", S_IRUGO, dir,
	214	mi, &minstrel_stat_csv_fops);
cccf129f FF	215	}
	216
	217	void
	218	minstrel_remove_sta_debugfs(void priv, void priv_sta)
	219	{
	220	struct minstrel_sta_info *mi = priv_sta;
	221
	222	debugfs_remove(mi->dbg_stats);
6d488517 TH	223
6d488517 TH	224	debugfs_remove(mi->dbg_stats_csv);
cccf129f	225	}