mirror of
https://github.com/FEX-Emu/linux.git
synced 2024-12-27 03:47:43 +00:00
a0572d93c1
No need for seek here, so let's just use nonseekable_open. Signed-off-by: Arnd Bergmann <arnd@arndb.de>
120 lines
3.3 KiB
C
120 lines
3.3 KiB
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);
|
|
}
|