[net-next-2.6.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 <net/mac80211.h>
#include "rc80211_minstrel.h"
#include "rc80211_minstrel_ht.h"

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, j, tp, prob, eprob;
	char *p;
	int ret;

	if (!msp->is_ht) {
		inode->i_private = &msp->legacy;
		ret = minstrel_stats_open(inode, file);
		inode->i_private = msp;
		return ret;
	}

	ms = kmalloc(sizeof(*ms) + 8192, GFP_KERNEL);
	if (!ms)
		return -ENOMEM;

	file->private_data = ms;
	p = ms->buf;
	p += sprintf(p, "type      rate     throughput  ewma prob   this prob  "
			"this succ/attempt   success    attempts\n");
	for (i = 0; i < MINSTREL_MAX_STREAMS * MINSTREL_STREAM_GROUPS; i++) {
		char htmode = '2';
		char gimode = 'L';

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

		if (minstrel_mcs_groups[i].flags & IEEE80211_TX_RC_40_MHZ_WIDTH)
			htmode = '4';
		if (minstrel_mcs_groups[i].flags & IEEE80211_TX_RC_SHORT_GI)
			gimode = 'S';

		for (j = 0; j < MCS_GROUP_RATES; j++) {
			struct minstrel_rate_stats *mr = &mi->groups[i].rates[j];
			int idx = i * MCS_GROUP_RATES + j;

			if (!(mi->groups[i].supported & BIT(j)))
				continue;

			p += sprintf(p, "HT%c0/%cGI ", htmode, gimode);

			*(p++) = (idx == mi->max_tp_rate) ? 'T' : ' ';
			*(p++) = (idx == mi->max_tp_rate2) ? 't' : ' ';
			*(p++) = (idx == mi->max_prob_rate) ? 'P' : ' ';
			p += sprintf(p, "MCS%-2u", (minstrel_mcs_groups[i].streams - 1) *
					MCS_GROUP_RATES + j);

			tp = mr->cur_tp / 10;
			prob = MINSTREL_TRUNC(mr->cur_prob * 1000);
			eprob = MINSTREL_TRUNC(mr->probability * 1000);

			p += sprintf(p, "  %6u.%1u   %6u.%1u   %6u.%1u        "
					"%3u(%3u)   %8llu    %8llu\n",
					tp / 10, tp % 10,
					eprob / 10, eprob % 10,
					prob / 10, prob % 10,
					mr->last_success,
					mr->last_attempts,
					(unsigned long long)mr->succ_hist,
					(unsigned long long)mr->att_hist);
		}
	}
	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 A-MPDU length: %d.%d\n",
		MINSTREL_TRUNC(mi->avg_ampdu_len),
		MINSTREL_TRUNC(mi->avg_ampdu_len * 10) % 10);
	ms->len = p - ms->buf;

	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,
};

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);
}

void
minstrel_ht_remove_sta_debugfs(void *priv, void *priv_sta)
{
	struct minstrel_ht_sta_priv *msp = priv_sta;

	debugfs_remove(msp->dbg_stats);
}
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>
	13	#include <net/mac80211.h>
	14	#include "rc80211_minstrel.h"
	15	#include "rc80211_minstrel_ht.h"
	16
ec8aa669 FF	17	static int
	18	minstrel_ht_stats_open(struct inode inode, struct file file)
	19	{
	20	struct minstrel_ht_sta_priv *msp = inode->i_private;
	21	struct minstrel_ht_sta *mi = &msp->ht;
	22	struct minstrel_debugfs_info *ms;
	23	unsigned int i, j, tp, prob, eprob;
	24	char *p;
	25	int ret;
	26
	27	if (!msp->is_ht) {
	28	inode->i_private = &msp->legacy;
	29	ret = minstrel_stats_open(inode, file);
	30	inode->i_private = msp;
	31	return ret;
	32	}
	33
	34	ms = kmalloc(sizeof(*ms) + 8192, GFP_KERNEL);
	35	if (!ms)
	36	return -ENOMEM;
	37
	38	file->private_data = ms;
	39	p = ms->buf;
	40	p += sprintf(p, "type rate throughput ewma prob this prob "
	41	"this succ/attempt success attempts\n");
	42	for (i = 0; i < MINSTREL_MAX_STREAMS * MINSTREL_STREAM_GROUPS; i++) {
	43	char htmode = '2';
	44	char gimode = 'L';
	45
	46	if (!mi->groups[i].supported)
	47	continue;
	48
	49	if (minstrel_mcs_groups[i].flags & IEEE80211_TX_RC_40_MHZ_WIDTH)
	50	htmode = '4';
	51	if (minstrel_mcs_groups[i].flags & IEEE80211_TX_RC_SHORT_GI)
	52	gimode = 'S';
	53
	54	for (j = 0; j < MCS_GROUP_RATES; j++) {
	55	struct minstrel_rate_stats *mr = &mi->groups[i].rates[j];
	56	int idx = i * MCS_GROUP_RATES + j;
	57
	58	if (!(mi->groups[i].supported & BIT(j)))
	59	continue;
	60
	61	p += sprintf(p, "HT%c0/%cGI ", htmode, gimode);
	62
	63	*(p++) = (idx == mi->max_tp_rate) ? 'T' : ' ';
	64	*(p++) = (idx == mi->max_tp_rate2) ? 't' : ' ';
	65	*(p++) = (idx == mi->max_prob_rate) ? 'P' : ' ';
	66	p += sprintf(p, "MCS%-2u", (minstrel_mcs_groups[i].streams - 1) *
	67	MCS_GROUP_RATES + j);
	68
	69	tp = mr->cur_tp / 10;
	70	prob = MINSTREL_TRUNC(mr->cur_prob * 1000);
	71	eprob = MINSTREL_TRUNC(mr->probability * 1000);
	72
	73	p += sprintf(p, " %6u.%1u %6u.%1u %6u.%1u "
	74	"%3u(%3u) %8llu %8llu\n",
	75	tp / 10, tp % 10,
	76	eprob / 10, eprob % 10,
	77	prob / 10, prob % 10,
	78	mr->last_success,
	79	mr->last_attempts,
	80	(unsigned long long)mr->succ_hist,
81	(unsigned long long)mr->att_hist);
82	}
83	}
84	p += sprintf(p, "\nTotal packet count:: ideal %d "
85	"lookaround %d\n",
86	max(0, (int) mi->total_packets - (int) mi->sample_packets),
87	mi->sample_packets);
88	p += sprintf(p, "Average A-MPDU length: %d.%d\n",
89	MINSTREL_TRUNC(mi->avg_ampdu_len),
90	MINSTREL_TRUNC(mi->avg_ampdu_len * 10) % 10);
91	ms->len = p - ms->buf;
92
a0572d93	93	return nonseekable_open(inode, file);
ec8aa669 FF	94	}
	95
	96	static const struct file_operations minstrel_ht_stat_fops = {
	97	.owner = THIS_MODULE,
	98	.open = minstrel_ht_stats_open,
	99	.read = minstrel_stats_read,
	100	.release = minstrel_stats_release,
a0572d93	101	.llseek = no_llseek,
ec8aa669 FF	102	};
	103
	104	void
	105	minstrel_ht_add_sta_debugfs(void priv, void priv_sta, struct dentry *dir)
	106	{
	107	struct minstrel_ht_sta_priv *msp = priv_sta;
	108
	109	msp->dbg_stats = debugfs_create_file("rc_stats", S_IRUGO, dir, msp,
	110	&minstrel_ht_stat_fops);
	111	}
	112
	113	void
	114	minstrel_ht_remove_sta_debugfs(void priv, void priv_sta)
	115	{
	116	struct minstrel_ht_sta_priv *msp = priv_sta;
	117
	118	debugfs_remove(msp->dbg_stats);
	119	}