337 строки
9.0 KiB
C
337 строки
9.0 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
|
|
/*
|
|
* Copyright (C) 2010 Felix Fietkau <nbd@openwrt.org>
|
|
*/
|
|
#include <linux/netdevice.h>
|
|
#include <linux/types.h>
|
|
#include <linux/skbuff.h>
|
|
#include <linux/debugfs.h>
|
|
#include <linux/ieee80211.h>
|
|
#include <linux/export.h>
|
|
#include <net/mac80211.h>
|
|
#include "rc80211_minstrel_ht.h"
|
|
|
|
struct minstrel_debugfs_info {
|
|
size_t len;
|
|
char buf[];
|
|
};
|
|
|
|
static 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);
|
|
}
|
|
|
|
static int
|
|
minstrel_stats_release(struct inode *inode, struct file *file)
|
|
{
|
|
kfree(file->private_data);
|
|
return 0;
|
|
}
|
|
|
|
static bool
|
|
minstrel_ht_is_sample_rate(struct minstrel_ht_sta *mi, int idx)
|
|
{
|
|
int type, i;
|
|
|
|
for (type = 0; type < ARRAY_SIZE(mi->sample); type++)
|
|
for (i = 0; i < MINSTREL_SAMPLE_RATES; i++)
|
|
if (mi->sample[type].cur_sample_rates[i] == idx)
|
|
return true;
|
|
return false;
|
|
}
|
|
|
|
static char *
|
|
minstrel_ht_stats_dump(struct minstrel_ht_sta *mi, int i, char *p)
|
|
{
|
|
const struct mcs_group *mg;
|
|
unsigned int j, tp_max, tp_avg, eprob, tx_time;
|
|
char htmode = '2';
|
|
char gimode = 'L';
|
|
u32 gflags;
|
|
|
|
if (!mi->supported[i])
|
|
return p;
|
|
|
|
mg = &minstrel_mcs_groups[i];
|
|
gflags = mg->flags;
|
|
|
|
if (gflags & IEEE80211_TX_RC_40_MHZ_WIDTH)
|
|
htmode = '4';
|
|
else if (gflags & IEEE80211_TX_RC_80_MHZ_WIDTH)
|
|
htmode = '8';
|
|
if (gflags & IEEE80211_TX_RC_SHORT_GI)
|
|
gimode = 'S';
|
|
|
|
for (j = 0; j < MCS_GROUP_RATES; j++) {
|
|
struct minstrel_rate_stats *mrs = &mi->groups[i].rates[j];
|
|
int idx = MI_RATE(i, j);
|
|
unsigned int duration;
|
|
|
|
if (!(mi->supported[i] & BIT(j)))
|
|
continue;
|
|
|
|
if (gflags & IEEE80211_TX_RC_MCS) {
|
|
p += sprintf(p, "HT%c0 ", htmode);
|
|
p += sprintf(p, "%cGI ", gimode);
|
|
p += sprintf(p, "%d ", mg->streams);
|
|
} else if (gflags & IEEE80211_TX_RC_VHT_MCS) {
|
|
p += sprintf(p, "VHT%c0 ", htmode);
|
|
p += sprintf(p, "%cGI ", gimode);
|
|
p += sprintf(p, "%d ", mg->streams);
|
|
} else if (i == MINSTREL_OFDM_GROUP) {
|
|
p += sprintf(p, "OFDM ");
|
|
p += sprintf(p, "1 ");
|
|
} else {
|
|
p += sprintf(p, "CCK ");
|
|
p += sprintf(p, "%cP ", j < 4 ? 'L' : 'S');
|
|
p += sprintf(p, "1 ");
|
|
}
|
|
|
|
*(p++) = (idx == mi->max_tp_rate[0]) ? 'A' : ' ';
|
|
*(p++) = (idx == mi->max_tp_rate[1]) ? 'B' : ' ';
|
|
*(p++) = (idx == mi->max_tp_rate[2]) ? 'C' : ' ';
|
|
*(p++) = (idx == mi->max_tp_rate[3]) ? 'D' : ' ';
|
|
*(p++) = (idx == mi->max_prob_rate) ? 'P' : ' ';
|
|
*(p++) = minstrel_ht_is_sample_rate(mi, idx) ? 'S' : ' ';
|
|
|
|
if (gflags & IEEE80211_TX_RC_MCS) {
|
|
p += sprintf(p, " MCS%-2u", (mg->streams - 1) * 8 + j);
|
|
} else if (gflags & IEEE80211_TX_RC_VHT_MCS) {
|
|
p += sprintf(p, " MCS%-1u/%1u", j, mg->streams);
|
|
} else {
|
|
int r;
|
|
|
|
if (i == MINSTREL_OFDM_GROUP)
|
|
r = minstrel_ofdm_bitrates[j % 8];
|
|
else
|
|
r = minstrel_cck_bitrates[j % 4];
|
|
|
|
p += sprintf(p, " %2u.%1uM", r / 10, r % 10);
|
|
}
|
|
|
|
p += sprintf(p, " %3u ", idx);
|
|
|
|
/* tx_time[rate(i)] in usec */
|
|
duration = mg->duration[j];
|
|
duration <<= mg->shift;
|
|
tx_time = DIV_ROUND_CLOSEST(duration, 1000);
|
|
p += sprintf(p, "%6u ", tx_time);
|
|
|
|
tp_max = minstrel_ht_get_tp_avg(mi, i, j, MINSTREL_FRAC(100, 100));
|
|
tp_avg = minstrel_ht_get_tp_avg(mi, i, j, 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);
|
|
}
|
|
|
|
return p;
|
|
}
|
|
|
|
static int
|
|
minstrel_ht_stats_open(struct inode *inode, struct file *file)
|
|
{
|
|
struct minstrel_ht_sta *mi = inode->i_private;
|
|
struct minstrel_debugfs_info *ms;
|
|
unsigned int i;
|
|
char *p;
|
|
|
|
ms = kmalloc(32768, 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,
|
|
"mode guard # rate [name idx airtime max_tp] [avg(tp) avg(prob)] [retry|suc|att] [#success | #attempts]\n");
|
|
|
|
p = minstrel_ht_stats_dump(mi, MINSTREL_CCK_GROUP, p);
|
|
for (i = 0; i < MINSTREL_CCK_GROUP; i++)
|
|
p = minstrel_ht_stats_dump(mi, i, p);
|
|
for (i++; i < ARRAY_SIZE(mi->groups); i++)
|
|
p = minstrel_ht_stats_dump(mi, i, p);
|
|
|
|
p += sprintf(p, "\nTotal packet count:: ideal %d "
|
|
"lookaround %d\n",
|
|
max(0, (int) mi->total_packets - (int) mi->sample_packets),
|
|
mi->sample_packets);
|
|
if (mi->avg_ampdu_len)
|
|
p += sprintf(p, "Average # of aggregated frames per A-MPDU: %d.%d\n",
|
|
MINSTREL_TRUNC(mi->avg_ampdu_len),
|
|
MINSTREL_TRUNC(mi->avg_ampdu_len * 10) % 10);
|
|
ms->len = p - ms->buf;
|
|
WARN_ON(ms->len + sizeof(*ms) > 32768);
|
|
|
|
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,
|
|
};
|
|
|
|
static char *
|
|
minstrel_ht_stats_csv_dump(struct minstrel_ht_sta *mi, int i, char *p)
|
|
{
|
|
const struct mcs_group *mg;
|
|
unsigned int j, tp_max, tp_avg, eprob, tx_time;
|
|
char htmode = '2';
|
|
char gimode = 'L';
|
|
u32 gflags;
|
|
|
|
if (!mi->supported[i])
|
|
return p;
|
|
|
|
mg = &minstrel_mcs_groups[i];
|
|
gflags = mg->flags;
|
|
|
|
if (gflags & IEEE80211_TX_RC_40_MHZ_WIDTH)
|
|
htmode = '4';
|
|
else if (gflags & IEEE80211_TX_RC_80_MHZ_WIDTH)
|
|
htmode = '8';
|
|
if (gflags & IEEE80211_TX_RC_SHORT_GI)
|
|
gimode = 'S';
|
|
|
|
for (j = 0; j < MCS_GROUP_RATES; j++) {
|
|
struct minstrel_rate_stats *mrs = &mi->groups[i].rates[j];
|
|
int idx = MI_RATE(i, j);
|
|
unsigned int duration;
|
|
|
|
if (!(mi->supported[i] & BIT(j)))
|
|
continue;
|
|
|
|
if (gflags & IEEE80211_TX_RC_MCS) {
|
|
p += sprintf(p, "HT%c0,", htmode);
|
|
p += sprintf(p, "%cGI,", gimode);
|
|
p += sprintf(p, "%d,", mg->streams);
|
|
} else if (gflags & IEEE80211_TX_RC_VHT_MCS) {
|
|
p += sprintf(p, "VHT%c0,", htmode);
|
|
p += sprintf(p, "%cGI,", gimode);
|
|
p += sprintf(p, "%d,", mg->streams);
|
|
} else if (i == MINSTREL_OFDM_GROUP) {
|
|
p += sprintf(p, "OFDM,,1,");
|
|
} else {
|
|
p += sprintf(p, "CCK,");
|
|
p += sprintf(p, "%cP,", j < 4 ? 'L' : 'S');
|
|
p += sprintf(p, "1,");
|
|
}
|
|
|
|
p += sprintf(p, "%s" ,((idx == mi->max_tp_rate[0]) ? "A" : ""));
|
|
p += sprintf(p, "%s" ,((idx == mi->max_tp_rate[1]) ? "B" : ""));
|
|
p += sprintf(p, "%s" ,((idx == mi->max_tp_rate[2]) ? "C" : ""));
|
|
p += sprintf(p, "%s" ,((idx == mi->max_tp_rate[3]) ? "D" : ""));
|
|
p += sprintf(p, "%s" ,((idx == mi->max_prob_rate) ? "P" : ""));
|
|
p += sprintf(p, "%s", (minstrel_ht_is_sample_rate(mi, idx) ? "S" : ""));
|
|
|
|
if (gflags & IEEE80211_TX_RC_MCS) {
|
|
p += sprintf(p, ",MCS%-2u,", (mg->streams - 1) * 8 + j);
|
|
} else if (gflags & IEEE80211_TX_RC_VHT_MCS) {
|
|
p += sprintf(p, ",MCS%-1u/%1u,", j, mg->streams);
|
|
} else {
|
|
int r;
|
|
|
|
if (i == MINSTREL_OFDM_GROUP)
|
|
r = minstrel_ofdm_bitrates[j % 8];
|
|
else
|
|
r = minstrel_cck_bitrates[j % 4];
|
|
|
|
p += sprintf(p, ",%2u.%1uM,", r / 10, r % 10);
|
|
}
|
|
|
|
p += sprintf(p, "%u,", idx);
|
|
|
|
duration = mg->duration[j];
|
|
duration <<= mg->shift;
|
|
tx_time = DIV_ROUND_CLOSEST(duration, 1000);
|
|
p += sprintf(p, "%u,", tx_time);
|
|
|
|
tp_max = minstrel_ht_get_tp_avg(mi, i, j, MINSTREL_FRAC(100, 100));
|
|
tp_avg = minstrel_ht_get_tp_avg(mi, i, j, mrs->prob_avg);
|
|
eprob = MINSTREL_TRUNC(mrs->prob_avg * 1000);
|
|
|
|
p += sprintf(p, "%u.%u,%u.%u,%u.%u,%u,%u,"
|
|
"%u,%llu,%llu,",
|
|
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, "%d,%d,%d.%d\n",
|
|
max(0, (int) mi->total_packets -
|
|
(int) mi->sample_packets),
|
|
mi->sample_packets,
|
|
MINSTREL_TRUNC(mi->avg_ampdu_len),
|
|
MINSTREL_TRUNC(mi->avg_ampdu_len * 10) % 10);
|
|
}
|
|
|
|
return p;
|
|
}
|
|
|
|
static int
|
|
minstrel_ht_stats_csv_open(struct inode *inode, struct file *file)
|
|
{
|
|
struct minstrel_ht_sta *mi = inode->i_private;
|
|
struct minstrel_debugfs_info *ms;
|
|
unsigned int i;
|
|
char *p;
|
|
|
|
ms = kmalloc(32768, GFP_KERNEL);
|
|
if (!ms)
|
|
return -ENOMEM;
|
|
|
|
file->private_data = ms;
|
|
|
|
p = ms->buf;
|
|
|
|
p = minstrel_ht_stats_csv_dump(mi, MINSTREL_CCK_GROUP, p);
|
|
for (i = 0; i < MINSTREL_CCK_GROUP; i++)
|
|
p = minstrel_ht_stats_csv_dump(mi, i, p);
|
|
for (i++; i < ARRAY_SIZE(mi->groups); i++)
|
|
p = minstrel_ht_stats_csv_dump(mi, i, p);
|
|
|
|
ms->len = p - ms->buf;
|
|
WARN_ON(ms->len + sizeof(*ms) > 32768);
|
|
|
|
return nonseekable_open(inode, file);
|
|
}
|
|
|
|
static const struct file_operations minstrel_ht_stat_csv_fops = {
|
|
.owner = THIS_MODULE,
|
|
.open = minstrel_ht_stats_csv_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)
|
|
{
|
|
debugfs_create_file("rc_stats", 0444, dir, priv_sta,
|
|
&minstrel_ht_stat_fops);
|
|
debugfs_create_file("rc_stats_csv", 0444, dir, priv_sta,
|
|
&minstrel_ht_stat_csv_fops);
|
|
}
|