net/mac80211/rc80211_minstrel_debugfs.c - third_party/kernel - Git at Google

 /*
  * 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_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) sd(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;
 		unsigned int prob_ewmsd;

 		*(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_ewma);
 		eprob = MINSTREL_TRUNC(mrs->prob_ewma * 1000);
 		prob_ewmsd = minstrel_get_ewmsd10(mrs);

 		p += sprintf(p, "%4u.%1u    %4u.%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,
 				prob_ewmsd / 10, prob_ewmsd % 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_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;
 		unsigned int prob_ewmsd;

 		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_ewma);
 		eprob = MINSTREL_TRUNC(mrs->prob_ewma * 1000);
 		prob_ewmsd = minstrel_get_ewmsd10(mrs);

 		p += sprintf(p, "%u.%u,%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,
 				prob_ewmsd / 10, prob_ewmsd % 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", 0444, dir, mi,
 					    &minstrel_stat_fops);

 	mi->dbg_stats_csv = debugfs_create_file("rc_stats_csv", 0444, 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);
 }
	/*
	* 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_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) sd(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;
	unsigned int prob_ewmsd;

	*(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_ewma);
	eprob = MINSTREL_TRUNC(mrs->prob_ewma * 1000);
	prob_ewmsd = minstrel_get_ewmsd10(mrs);

	p += sprintf(p, "%4u.%1u %4u.%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,
	prob_ewmsd / 10, prob_ewmsd % 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_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;
	unsigned int prob_ewmsd;

	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_ewma);
	eprob = MINSTREL_TRUNC(mrs->prob_ewma * 1000);
	prob_ewmsd = minstrel_get_ewmsd10(mrs);

	p += sprintf(p, "%u.%u,%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,
	prob_ewmsd / 10, prob_ewmsd % 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", 0444, dir, mi,
	&minstrel_stat_fops);

	mi->dbg_stats_csv = debugfs_create_file("rc_stats_csv", 0444, 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);
	}