dfs_debug.c
4.94 KB
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
/*
* Copyright (c) 2008-2011 Atheros Communications Inc.
* Copyright (c) 2011 Neratec Solutions AG
*
* Permission to use, copy, modify, and/or distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#include <linux/debugfs.h>
#include <linux/export.h>
#include "ath9k.h"
#include "dfs_debug.h"
#include "../dfs_pattern_detector.h"
static struct ath_dfs_pool_stats dfs_pool_stats = { 0 };
#define ATH9K_DFS_STAT(s, p) \
len += scnprintf(buf + len, size - len, "%28s : %10u\n", s, \
sc->debug.stats.dfs_stats.p);
#define ATH9K_DFS_POOL_STAT(s, p) \
len += scnprintf(buf + len, size - len, "%28s : %10u\n", s, \
dfs_pool_stats.p);
static ssize_t read_file_dfs(struct file *file, char __user *user_buf,
size_t count, loff_t *ppos)
{
struct ath_softc *sc = file->private_data;
struct ath9k_hw_version *hw_ver = &sc->sc_ah->hw_version;
char *buf;
unsigned int len = 0, size = 8000;
ssize_t retval = 0;
buf = kzalloc(size, GFP_KERNEL);
if (buf == NULL)
return -ENOMEM;
len += scnprintf(buf + len, size - len, "DFS support for "
"macVersion = 0x%x, macRev = 0x%x: %s\n",
hw_ver->macVersion, hw_ver->macRev,
(sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_DFS) ?
"enabled" : "disabled");
if (!sc->dfs_detector) {
len += scnprintf(buf + len, size - len,
"DFS detector not enabled\n");
goto exit;
}
dfs_pool_stats = sc->dfs_detector->get_stats(sc->dfs_detector);
len += scnprintf(buf + len, size - len, "Pulse detector statistics:\n");
ATH9K_DFS_STAT("pulse events reported ", pulses_total);
ATH9K_DFS_STAT("invalid pulse events ", pulses_no_dfs);
ATH9K_DFS_STAT("DFS pulses detected ", pulses_detected);
ATH9K_DFS_STAT("Datalen discards ", datalen_discards);
ATH9K_DFS_STAT("RSSI discards ", rssi_discards);
ATH9K_DFS_STAT("BW info discards ", bwinfo_discards);
ATH9K_DFS_STAT("Primary channel pulses ", pri_phy_errors);
ATH9K_DFS_STAT("Secondary channel pulses", ext_phy_errors);
ATH9K_DFS_STAT("Dual channel pulses ", dc_phy_errors);
len += scnprintf(buf + len, size - len, "Radar detector statistics "
"(current DFS region: %d)\n",
sc->dfs_detector->region);
ATH9K_DFS_STAT("Pulse events processed ", pulses_processed);
ATH9K_DFS_STAT("Radars detected ", radar_detected);
len += scnprintf(buf + len, size - len, "Global Pool statistics:\n");
ATH9K_DFS_POOL_STAT("Pool references ", pool_reference);
ATH9K_DFS_POOL_STAT("Pulses allocated ", pulse_allocated);
ATH9K_DFS_POOL_STAT("Pulses alloc error ", pulse_alloc_error);
ATH9K_DFS_POOL_STAT("Pulses in use ", pulse_used);
ATH9K_DFS_POOL_STAT("Seqs. allocated ", pseq_allocated);
ATH9K_DFS_POOL_STAT("Seqs. alloc error ", pseq_alloc_error);
ATH9K_DFS_POOL_STAT("Seqs. in use ", pseq_used);
exit:
if (len > size)
len = size;
retval = simple_read_from_buffer(user_buf, count, ppos, buf, len);
kfree(buf);
return retval;
}
/* magic number to prevent accidental reset of DFS statistics */
#define DFS_STATS_RESET_MAGIC 0x80000000
static ssize_t write_file_dfs(struct file *file, const char __user *user_buf,
size_t count, loff_t *ppos)
{
struct ath_softc *sc = file->private_data;
unsigned long val;
char buf[32];
ssize_t len;
len = min(count, sizeof(buf) - 1);
if (copy_from_user(buf, user_buf, len))
return -EFAULT;
buf[len] = '\0';
if (kstrtoul(buf, 0, &val))
return -EINVAL;
if (val == DFS_STATS_RESET_MAGIC)
memset(&sc->debug.stats.dfs_stats, 0,
sizeof(sc->debug.stats.dfs_stats));
return count;
}
static ssize_t write_file_simulate_radar(struct file *file,
const char __user *user_buf,
size_t count, loff_t *ppos)
{
struct ath_softc *sc = file->private_data;
ieee80211_radar_detected(sc->hw);
return count;
}
static const struct file_operations fops_simulate_radar = {
.write = write_file_simulate_radar,
.open = simple_open,
.owner = THIS_MODULE,
.llseek = default_llseek,
};
static const struct file_operations fops_dfs_stats = {
.read = read_file_dfs,
.write = write_file_dfs,
.open = simple_open,
.owner = THIS_MODULE,
.llseek = default_llseek,
};
void ath9k_dfs_init_debug(struct ath_softc *sc)
{
debugfs_create_file("dfs_stats", S_IRUSR,
sc->debug.debugfs_phy, sc, &fops_dfs_stats);
debugfs_create_file("dfs_simulate_radar", S_IWUSR,
sc->debug.debugfs_phy, sc, &fops_simulate_radar);
}