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
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
|
// SPDX-License-Identifier: GPL-2.0-or-later
/*
Broadcom B43legacy wireless driver
SYSFS support routines
Copyright (c) 2006 Michael Buesch <m@bues.ch>
*/
#include "sysfs.h"
#include "b43legacy.h"
#include "main.h"
#include "phy.h"
#include "radio.h"
#include <linux/capability.h>
#define GENERIC_FILESIZE 64
static int get_integer(const char *buf, size_t count)
{
char tmp[10 + 1] = { 0 };
int ret = -EINVAL, res;
if (count == 0)
goto out;
count = min_t(size_t, count, 10);
memcpy(tmp, buf, count);
ret = kstrtoint(tmp, 10, &res);
if (!ret)
return res;
out:
return ret;
}
static int get_boolean(const char *buf, size_t count)
{
if (count != 0) {
if (buf[0] == '1')
return 1;
if (buf[0] == '0')
return 0;
if (count >= 4 && memcmp(buf, "true", 4) == 0)
return 1;
if (count >= 5 && memcmp(buf, "false", 5) == 0)
return 0;
if (count >= 3 && memcmp(buf, "yes", 3) == 0)
return 1;
if (count >= 2 && memcmp(buf, "no", 2) == 0)
return 0;
if (count >= 2 && memcmp(buf, "on", 2) == 0)
return 1;
if (count >= 3 && memcmp(buf, "off", 3) == 0)
return 0;
}
return -EINVAL;
}
static ssize_t b43legacy_attr_interfmode_show(struct device *dev,
struct device_attribute *attr,
char *buf)
{
struct b43legacy_wldev *wldev = dev_to_b43legacy_wldev(dev);
ssize_t count = 0;
if (!capable(CAP_NET_ADMIN))
return -EPERM;
mutex_lock(&wldev->wl->mutex);
switch (wldev->phy.interfmode) {
case B43legacy_INTERFMODE_NONE:
count = snprintf(buf, PAGE_SIZE, "0 (No Interference"
" Mitigation)\n");
break;
case B43legacy_INTERFMODE_NONWLAN:
count = snprintf(buf, PAGE_SIZE, "1 (Non-WLAN Interference"
" Mitigation)\n");
break;
case B43legacy_INTERFMODE_MANUALWLAN:
count = snprintf(buf, PAGE_SIZE, "2 (WLAN Interference"
" Mitigation)\n");
break;
default:
B43legacy_WARN_ON(1);
}
mutex_unlock(&wldev->wl->mutex);
return count;
}
static ssize_t b43legacy_attr_interfmode_store(struct device *dev,
struct device_attribute *attr,
const char *buf, size_t count)
{
struct b43legacy_wldev *wldev = dev_to_b43legacy_wldev(dev);
unsigned long flags;
int err;
int mode;
if (!capable(CAP_NET_ADMIN))
return -EPERM;
mode = get_integer(buf, count);
switch (mode) {
case 0:
mode = B43legacy_INTERFMODE_NONE;
break;
case 1:
mode = B43legacy_INTERFMODE_NONWLAN;
break;
case 2:
mode = B43legacy_INTERFMODE_MANUALWLAN;
break;
case 3:
mode = B43legacy_INTERFMODE_AUTOWLAN;
break;
default:
return -EINVAL;
}
mutex_lock(&wldev->wl->mutex);
spin_lock_irqsave(&wldev->wl->irq_lock, flags);
err = b43legacy_radio_set_interference_mitigation(wldev, mode);
if (err)
b43legacyerr(wldev->wl, "Interference Mitigation not "
"supported by device\n");
spin_unlock_irqrestore(&wldev->wl->irq_lock, flags);
mutex_unlock(&wldev->wl->mutex);
return err ? err : count;
}
static DEVICE_ATTR(interference, 0644,
b43legacy_attr_interfmode_show,
b43legacy_attr_interfmode_store);
static ssize_t b43legacy_attr_preamble_show(struct device *dev,
struct device_attribute *attr,
char *buf)
{
struct b43legacy_wldev *wldev = dev_to_b43legacy_wldev(dev);
ssize_t count;
if (!capable(CAP_NET_ADMIN))
return -EPERM;
mutex_lock(&wldev->wl->mutex);
if (wldev->short_preamble)
count = snprintf(buf, PAGE_SIZE, "1 (Short Preamble"
" enabled)\n");
else
count = snprintf(buf, PAGE_SIZE, "0 (Short Preamble"
" disabled)\n");
mutex_unlock(&wldev->wl->mutex);
return count;
}
static ssize_t b43legacy_attr_preamble_store(struct device *dev,
struct device_attribute *attr,
const char *buf, size_t count)
{
struct b43legacy_wldev *wldev = dev_to_b43legacy_wldev(dev);
unsigned long flags;
int value;
if (!capable(CAP_NET_ADMIN))
return -EPERM;
value = get_boolean(buf, count);
if (value < 0)
return value;
mutex_lock(&wldev->wl->mutex);
spin_lock_irqsave(&wldev->wl->irq_lock, flags);
wldev->short_preamble = !!value;
spin_unlock_irqrestore(&wldev->wl->irq_lock, flags);
mutex_unlock(&wldev->wl->mutex);
return count;
}
static DEVICE_ATTR(shortpreamble, 0644,
b43legacy_attr_preamble_show,
b43legacy_attr_preamble_store);
int b43legacy_sysfs_register(struct b43legacy_wldev *wldev)
{
struct device *dev = wldev->dev->dev;
int err;
B43legacy_WARN_ON(b43legacy_status(wldev) !=
B43legacy_STAT_INITIALIZED);
err = device_create_file(dev, &dev_attr_interference);
if (err)
goto out;
err = device_create_file(dev, &dev_attr_shortpreamble);
if (err)
goto err_remove_interfmode;
out:
return err;
err_remove_interfmode:
device_remove_file(dev, &dev_attr_interference);
goto out;
}
void b43legacy_sysfs_unregister(struct b43legacy_wldev *wldev)
{
struct device *dev = wldev->dev->dev;
device_remove_file(dev, &dev_attr_shortpreamble);
device_remove_file(dev, &dev_attr_interference);
}
|
