[linux-2.6-block.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"

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_max, tp_avg, 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 max_tp]  [avg(tp) avg(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_max = minstrel_get_tp_avg(mr, MINSTREL_FRAC(100,100));
		tp_avg = minstrel_get_tp_avg(mr, 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);
	}
	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;
}

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_max, tp_avg, 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_max = minstrel_get_tp_avg(mr, MINSTREL_FRAC(100,100));
		tp_avg = minstrel_get_tp_avg(mr, mrs->prob_avg);
		eprob = MINSTREL_TRUNC(mrs->prob_avg * 1000);

		p += sprintf(p, "%u.%u,%u.%u,%u.%u,%u,%u,%u,"
				"%llu,%llu,%d,%d\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,
				mi->total_packets - mi->sample_packets,
				mi->sample_packets);

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

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

	return 0;
}
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
eae44756	57	int
cccf129f FF	58	minstrel_stats_open(struct inode inode, struct file file)
	59	{
	60	struct minstrel_sta_info *mi = inode->i_private;
44ac91ea	61	struct minstrel_debugfs_info *ms;
1109dc39	62	unsigned int i, tp_max, tp_avg, eprob;
cccf129f FF	63	char *p;
cccf129f FF	64
11b2357d	65	ms = kmalloc(2048, GFP_KERNEL);
cccf129f FF	66	if (!ms)
	67	return -ENOMEM;
	68
	69	file->private_data = ms;
	70	p = ms->buf;
e161f7f6	71	p += sprintf(p, "\n");
a0c391b1	72	p += sprintf(p,
506dbf90	73	"best __________rate_________ ____statistics___ ____last_____ ______sum-of________\n");
a0c391b1	74	p += sprintf(p,
506dbf90	75	"rate [name idx airtime max_tp] [avg(tp) avg(prob)] [retry\|suc\|att] [#success \| #attempts]\n");
e161f7f6	76
cccf129f FF	77	for (i = 0; i < mi->n_rates; i++) {
cccf129f FF	78	struct minstrel_rate *mr = &mi->r[i];
ca12c0c8	79	struct minstrel_rate_stats *mrs = &mi->r[i].stats;
cccf129f	80
2ff2b690 TH	81	*(p++) = (i == mi->max_tp_rate[0]) ? 'A' : ' ';
	82	*(p++) = (i == mi->max_tp_rate[1]) ? 'B' : ' ';
	83	*(p++) = (i == mi->max_tp_rate[2]) ? 'C' : ' ';
	84	*(p++) = (i == mi->max_tp_rate[3]) ? 'D' : ' ';
cccf129f	85	*(p++) = (i == mi->max_prob_rate) ? 'P' : ' ';
e161f7f6 TH	86
e161f7f6 TH	87	p += sprintf(p, " %3u%s ", mr->bitrate / 2,
cccf129f	88	(mr->bitrate & 1 ? ".5" : " "));
e161f7f6	89	p += sprintf(p, "%3u ", i);
50e55a8e	90	p += sprintf(p, "%6u ", mr->perfect_tx_time);
cccf129f	91
50e55a8e	92	tp_max = minstrel_get_tp_avg(mr, MINSTREL_FRAC(100,100));
5f63afe0 FF	93	tp_avg = minstrel_get_tp_avg(mr, mrs->prob_avg);
5f63afe0 FF	94	eprob = MINSTREL_TRUNC(mrs->prob_avg * 1000);
cccf129f	95
506dbf90	96	p += sprintf(p, "%4u.%1u %4u.%1u %3u.%1u"
1109dc39	97	" %3u %3u %-3u "
5f919abc	98	"%9llu %-9llu\n",
50e55a8e	99	tp_max / 10, tp_max % 10,
6a27b2c4	100	tp_avg / 10, tp_avg % 10,
cccf129f	101	eprob / 10, eprob % 10,
e161f7f6	102	mrs->retry_count,
ca12c0c8 TH	103	mrs->last_success,
	104	mrs->last_attempts,
	105	(unsigned long long)mrs->succ_hist,
	106	(unsigned long long)mrs->att_hist);
cccf129f FF	107	}
	108	p += sprintf(p, "\nTotal packet count:: ideal %d "
	109	"lookaround %d\n\n",
ca12c0c8 TH	110	mi->total_packets - mi->sample_packets,
ca12c0c8 TH	111	mi->sample_packets);
cccf129f FF	112	ms->len = p - ms->buf;
cccf129f FF	113
11b2357d KB	114	WARN_ON(ms->len + sizeof(*ms) > 2048);
11b2357d KB	115
cccf129f FF	116	return 0;
	117	}
	118
6d488517 TH	119	int
6d488517 TH	120	minstrel_stats_csv_open(struct inode inode, struct file file)
cccf129f	121	{
6d488517	122	struct minstrel_sta_info *mi = inode->i_private;
44ac91ea	123	struct minstrel_debugfs_info *ms;
1109dc39	124	unsigned int i, tp_max, tp_avg, eprob;
6d488517	125	char *p;
cccf129f	126
6d488517 TH	127	ms = kmalloc(2048, GFP_KERNEL);
	128	if (!ms)
	129	return -ENOMEM;
	130
	131	file->private_data = ms;
	132	p = ms->buf;
	133
	134	for (i = 0; i < mi->n_rates; i++) {
	135	struct minstrel_rate *mr = &mi->r[i];
	136	struct minstrel_rate_stats *mrs = &mi->r[i].stats;
	137
	138	p += sprintf(p, "%s" ,((i == mi->max_tp_rate[0]) ? "A" : ""));
	139	p += sprintf(p, "%s" ,((i == mi->max_tp_rate[1]) ? "B" : ""));
	140	p += sprintf(p, "%s" ,((i == mi->max_tp_rate[2]) ? "C" : ""));
	141	p += sprintf(p, "%s" ,((i == mi->max_tp_rate[3]) ? "D" : ""));
	142	p += sprintf(p, "%s" ,((i == mi->max_prob_rate) ? "P" : ""));
	143
	144	p += sprintf(p, ",%u%s", mr->bitrate / 2,
	145	(mr->bitrate & 1 ? ".5," : ","));
	146	p += sprintf(p, "%u,", i);
	147	p += sprintf(p, "%u,",mr->perfect_tx_time);
	148
50e55a8e	149	tp_max = minstrel_get_tp_avg(mr, MINSTREL_FRAC(100,100));
5f63afe0 FF	150	tp_avg = minstrel_get_tp_avg(mr, mrs->prob_avg);
5f63afe0 FF	151	eprob = MINSTREL_TRUNC(mrs->prob_avg * 1000);
6d488517	152
506dbf90	153	p += sprintf(p, "%u.%u,%u.%u,%u.%u,%u,%u,%u,"
6d488517	154	"%llu,%llu,%d,%d\n",
50e55a8e	155	tp_max / 10, tp_max % 10,
6a27b2c4	156	tp_avg / 10, tp_avg % 10,
6d488517	157	eprob / 10, eprob % 10,
6d488517 TH	158	mrs->retry_count,
	159	mrs->last_success,
	160	mrs->last_attempts,
	161	(unsigned long long)mrs->succ_hist,
	162	(unsigned long long)mrs->att_hist,
	163	mi->total_packets - mi->sample_packets,
	164	mi->sample_packets);
	165
	166	}
	167	ms->len = p - ms->buf;
	168
	169	WARN_ON(ms->len + sizeof(*ms) > 2048);
cccf129f	170
cccf129f FF	171	return 0;
cccf129f FF	172	}