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
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
|
/*
* Copyright (c) 2006 Jiri Benc <jbenc@suse.cz>
* Copyright 2007 Johannes Berg <johannes@sipsolutions.net>
*
* 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/kernel.h>
#include <linux/device.h>
#include <linux/if.h>
#include <linux/interrupt.h>
#include <linux/netdevice.h>
#include <linux/rtnetlink.h>
#include <linux/notifier.h>
#include <net/mac80211.h>
#include <net/cfg80211.h>
#include "ieee80211_i.h"
#include "ieee80211_rate.h"
#include "debugfs.h"
#include "debugfs_netdev.h"
static ssize_t ieee80211_if_read(
struct ieee80211_sub_if_data *sdata,
char __user *userbuf,
size_t count, loff_t *ppos,
ssize_t (*format)(const struct ieee80211_sub_if_data *, char *, int))
{
char buf[70];
ssize_t ret = -EINVAL;
read_lock(&dev_base_lock);
if (sdata->dev->reg_state == NETREG_REGISTERED) {
ret = (*format)(sdata, buf, sizeof(buf));
ret = simple_read_from_buffer(userbuf, count, ppos, buf, ret);
}
read_unlock(&dev_base_lock);
return ret;
}
#define IEEE80211_IF_FMT(name, field, format_string) \
static ssize_t ieee80211_if_fmt_##name( \
const struct ieee80211_sub_if_data *sdata, char *buf, \
int buflen) \
{ \
return scnprintf(buf, buflen, format_string, sdata->field); \
}
#define IEEE80211_IF_FMT_DEC(name, field) \
IEEE80211_IF_FMT(name, field, "%d\n")
#define IEEE80211_IF_FMT_HEX(name, field) \
IEEE80211_IF_FMT(name, field, "%#x\n")
#define IEEE80211_IF_FMT_SIZE(name, field) \
IEEE80211_IF_FMT(name, field, "%zd\n")
#define IEEE80211_IF_FMT_ATOMIC(name, field) \
static ssize_t ieee80211_if_fmt_##name( \
const struct ieee80211_sub_if_data *sdata, \
char *buf, int buflen) \
{ \
return scnprintf(buf, buflen, "%d\n", atomic_read(&sdata->field));\
}
#define IEEE80211_IF_FMT_MAC(name, field) \
static ssize_t ieee80211_if_fmt_##name( \
const struct ieee80211_sub_if_data *sdata, char *buf, \
int buflen) \
{ \
return scnprintf(buf, buflen, MAC_FMT "\n", MAC_ARG(sdata->field));\
}
#define __IEEE80211_IF_FILE(name) \
static ssize_t ieee80211_if_read_##name(struct file *file, \
char __user *userbuf, \
size_t count, loff_t *ppos) \
{ \
return ieee80211_if_read(file->private_data, \
userbuf, count, ppos, \
ieee80211_if_fmt_##name); \
} \
static const struct file_operations name##_ops = { \
.read = ieee80211_if_read_##name, \
.open = mac80211_open_file_generic, \
}
#define IEEE80211_IF_FILE(name, field, format) \
IEEE80211_IF_FMT_##format(name, field) \
__IEEE80211_IF_FILE(name)
/* common attributes */
IEEE80211_IF_FILE(channel_use, channel_use, DEC);
IEEE80211_IF_FILE(drop_unencrypted, drop_unencrypted, DEC);
IEEE80211_IF_FILE(eapol, eapol, DEC);
IEEE80211_IF_FILE(ieee8021_x, ieee802_1x, DEC);
/* STA/IBSS attributes */
IEEE80211_IF_FILE(state, u.sta.state, DEC);
IEEE80211_IF_FILE(bssid, u.sta.bssid, MAC);
IEEE80211_IF_FILE(prev_bssid, u.sta.prev_bssid, MAC);
IEEE80211_IF_FILE(ssid_len, u.sta.ssid_len, SIZE);
IEEE80211_IF_FILE(aid, u.sta.aid, DEC);
IEEE80211_IF_FILE(ap_capab, u.sta.ap_capab, HEX);
IEEE80211_IF_FILE(capab, u.sta.capab, HEX);
IEEE80211_IF_FILE(extra_ie_len, u.sta.extra_ie_len, SIZE);
IEEE80211_IF_FILE(auth_tries, u.sta.auth_tries, DEC);
IEEE80211_IF_FILE(assoc_tries, u.sta.assoc_tries, DEC);
IEEE80211_IF_FILE(auth_algs, u.sta.auth_algs, HEX);
IEEE80211_IF_FILE(auth_alg, u.sta.auth_alg, DEC);
IEEE80211_IF_FILE(auth_transaction, u.sta.auth_transaction, DEC);
static ssize_t ieee80211_if_fmt_flags(
const struct ieee80211_sub_if_data *sdata, char *buf, int buflen)
{
return scnprintf(buf, buflen, "%s%s%s%s%s%s%s\n",
sdata->u.sta.flags & IEEE80211_STA_SSID_SET ? "SSID\n" : "",
sdata->u.sta.flags & IEEE80211_STA_BSSID_SET ? "BSSID\n" : "",
sdata->u.sta.flags & IEEE80211_STA_PREV_BSSID_SET ? "prev BSSID\n" : "",
sdata->u.sta.flags & IEEE80211_STA_AUTHENTICATED ? "AUTH\n" : "",
sdata->u.sta.flags & IEEE80211_STA_ASSOCIATED ? "ASSOC\n" : "",
sdata->u.sta.flags & IEEE80211_STA_PROBEREQ_POLL ? "PROBEREQ POLL\n" : "",
sdata->flags & IEEE80211_SDATA_USE_PROTECTION ? "CTS prot\n" : "");
}
__IEEE80211_IF_FILE(flags);
/* AP attributes */
IEEE80211_IF_FILE(num_sta_ps, u.ap.num_sta_ps, ATOMIC);
IEEE80211_IF_FILE(dtim_period, u.ap.dtim_period, DEC);
IEEE80211_IF_FILE(dtim_count, u.ap.dtim_count, DEC);
IEEE80211_IF_FILE(num_beacons, u.ap.num_beacons, DEC);
IEEE80211_IF_FILE(force_unicast_rateidx, u.ap.force_unicast_rateidx, DEC);
IEEE80211_IF_FILE(max_ratectrl_rateidx, u.ap.max_ratectrl_rateidx, DEC);
static ssize_t ieee80211_if_fmt_num_buffered_multicast(
const struct ieee80211_sub_if_data *sdata, char *buf, int buflen)
{
return scnprintf(buf, buflen, "%u\n",
skb_queue_len(&sdata->u.ap.ps_bc_buf));
}
__IEEE80211_IF_FILE(num_buffered_multicast);
static ssize_t ieee80211_if_fmt_beacon_head_len(
const struct ieee80211_sub_if_data *sdata, char *buf, int buflen)
{
if (sdata->u.ap.beacon_head)
return scnprintf(buf, buflen, "%d\n",
sdata->u.ap.beacon_head_len);
return scnprintf(buf, buflen, "\n");
}
__IEEE80211_IF_FILE(beacon_head_len);
static ssize_t ieee80211_if_fmt_beacon_tail_len(
const struct ieee80211_sub_if_data *sdata, char *buf, int buflen)
{
if (sdata->u.ap.beacon_tail)
return scnprintf(buf, buflen, "%d\n",
sdata->u.ap.beacon_tail_len);
return scnprintf(buf, buflen, "\n");
}
__IEEE80211_IF_FILE(beacon_tail_len);
/* WDS attributes */
IEEE80211_IF_FILE(peer, u.wds.remote_addr, MAC);
#define DEBUGFS_ADD(name, type)\
sdata->debugfs.type.name = debugfs_create_file(#name, 0444,\
sdata->debugfsdir, sdata, &name##_ops);
static void add_sta_files(struct ieee80211_sub_if_data *sdata)
{
DEBUGFS_ADD(channel_use, sta);
DEBUGFS_ADD(drop_unencrypted, sta);
DEBUGFS_ADD(eapol, sta);
DEBUGFS_ADD(ieee8021_x, sta);
DEBUGFS_ADD(state, sta);
DEBUGFS_ADD(bssid, sta);
DEBUGFS_ADD(prev_bssid, sta);
DEBUGFS_ADD(ssid_len, sta);
DEBUGFS_ADD(aid, sta);
DEBUGFS_ADD(ap_capab, sta);
DEBUGFS_ADD(capab, sta);
DEBUGFS_ADD(extra_ie_len, sta);
DEBUGFS_ADD(auth_tries, sta);
DEBUGFS_ADD(assoc_tries, sta);
DEBUGFS_ADD(auth_algs, sta);
DEBUGFS_ADD(auth_alg, sta);
DEBUGFS_ADD(auth_transaction, sta);
DEBUGFS_ADD(flags, sta);
}
static void add_ap_files(struct ieee80211_sub_if_data *sdata)
{
DEBUGFS_ADD(channel_use, ap);
DEBUGFS_ADD(drop_unencrypted, ap);
DEBUGFS_ADD(eapol, ap);
DEBUGFS_ADD(ieee8021_x, ap);
DEBUGFS_ADD(num_sta_ps, ap);
DEBUGFS_ADD(dtim_period, ap);
DEBUGFS_ADD(dtim_count, ap);
DEBUGFS_ADD(num_beacons, ap);
DEBUGFS_ADD(force_unicast_rateidx, ap);
DEBUGFS_ADD(max_ratectrl_rateidx, ap);
DEBUGFS_ADD(num_buffered_multicast, ap);
DEBUGFS_ADD(beacon_head_len, ap);
DEBUGFS_ADD(beacon_tail_len, ap);
}
static void add_wds_files(struct ieee80211_sub_if_data *sdata)
{
DEBUGFS_ADD(channel_use, wds);
DEBUGFS_ADD(drop_unencrypted, wds);
DEBUGFS_ADD(eapol, wds);
DEBUGFS_ADD(ieee8021_x, wds);
DEBUGFS_ADD(peer, wds);
}
static void add_vlan_files(struct ieee80211_sub_if_data *sdata)
{
DEBUGFS_ADD(channel_use, vlan);
DEBUGFS_ADD(drop_unencrypted, vlan);
DEBUGFS_ADD(eapol, vlan);
DEBUGFS_ADD(ieee8021_x, vlan);
}
static void add_monitor_files(struct ieee80211_sub_if_data *sdata)
{
}
static void add_files(struct ieee80211_sub_if_data *sdata)
{
if (!sdata->debugfsdir)
return;
switch (sdata->type) {
case IEEE80211_IF_TYPE_STA:
case IEEE80211_IF_TYPE_IBSS:
add_sta_files(sdata);
break;
case IEEE80211_IF_TYPE_AP:
add_ap_files(sdata);
break;
case IEEE80211_IF_TYPE_WDS:
add_wds_files(sdata);
break;
case IEEE80211_IF_TYPE_MNTR:
add_monitor_files(sdata);
break;
case IEEE80211_IF_TYPE_VLAN:
add_vlan_files(sdata);
break;
default:
break;
}
}
#define DEBUGFS_DEL(name, type) \
do { \
debugfs_remove(sdata->debugfs.type.name); \
sdata->debugfs.type.name = NULL; \
} while (0)
static void del_sta_files(struct ieee80211_sub_if_data *sdata)
{
DEBUGFS_DEL(channel_use, sta);
DEBUGFS_DEL(drop_unencrypted, sta);
DEBUGFS_DEL(eapol, sta);
DEBUGFS_DEL(ieee8021_x, sta);
DEBUGFS_DEL(state, sta);
DEBUGFS_DEL(bssid, sta);
DEBUGFS_DEL(prev_bssid, sta);
DEBUGFS_DEL(ssid_len, sta);
DEBUGFS_DEL(aid, sta);
DEBUGFS_DEL(ap_capab, sta);
DEBUGFS_DEL(capab, sta);
DEBUGFS_DEL(extra_ie_len, sta);
DEBUGFS_DEL(auth_tries, sta);
DEBUGFS_DEL(assoc_tries, sta);
DEBUGFS_DEL(auth_algs, sta);
DEBUGFS_DEL(auth_alg, sta);
DEBUGFS_DEL(auth_transaction, sta);
DEBUGFS_DEL(flags, sta);
}
static void del_ap_files(struct ieee80211_sub_if_data *sdata)
{
DEBUGFS_DEL(channel_use, ap);
DEBUGFS_DEL(drop_unencrypted, ap);
DEBUGFS_DEL(eapol, ap);
DEBUGFS_DEL(ieee8021_x, ap);
DEBUGFS_DEL(num_sta_ps, ap);
DEBUGFS_DEL(dtim_period, ap);
DEBUGFS_DEL(dtim_count, ap);
DEBUGFS_DEL(num_beacons, ap);
DEBUGFS_DEL(force_unicast_rateidx, ap);
DEBUGFS_DEL(max_ratectrl_rateidx, ap);
DEBUGFS_DEL(num_buffered_multicast, ap);
DEBUGFS_DEL(beacon_head_len, ap);
DEBUGFS_DEL(beacon_tail_len, ap);
}
static void del_wds_files(struct ieee80211_sub_if_data *sdata)
{
DEBUGFS_DEL(channel_use, wds);
DEBUGFS_DEL(drop_unencrypted, wds);
DEBUGFS_DEL(eapol, wds);
DEBUGFS_DEL(ieee8021_x, wds);
DEBUGFS_DEL(peer, wds);
}
static void del_vlan_files(struct ieee80211_sub_if_data *sdata)
{
DEBUGFS_DEL(channel_use, vlan);
DEBUGFS_DEL(drop_unencrypted, vlan);
DEBUGFS_DEL(eapol, vlan);
DEBUGFS_DEL(ieee8021_x, vlan);
}
static void del_monitor_files(struct ieee80211_sub_if_data *sdata)
{
}
static void del_files(struct ieee80211_sub_if_data *sdata, int type)
{
if (!sdata->debugfsdir)
return;
switch (type) {
case IEEE80211_IF_TYPE_STA:
case IEEE80211_IF_TYPE_IBSS:
del_sta_files(sdata);
break;
case IEEE80211_IF_TYPE_AP:
del_ap_files(sdata);
break;
case IEEE80211_IF_TYPE_WDS:
del_wds_files(sdata);
break;
case IEEE80211_IF_TYPE_MNTR:
del_monitor_files(sdata);
break;
case IEEE80211_IF_TYPE_VLAN:
del_vlan_files(sdata);
break;
default:
break;
}
}
static int notif_registered;
void ieee80211_debugfs_add_netdev(struct ieee80211_sub_if_data *sdata)
{
char buf[10+IFNAMSIZ];
if (!notif_registered)
return;
sprintf(buf, "netdev:%s", sdata->dev->name);
sdata->debugfsdir = debugfs_create_dir(buf,
sdata->local->hw.wiphy->debugfsdir);
}
void ieee80211_debugfs_remove_netdev(struct ieee80211_sub_if_data *sdata)
{
del_files(sdata, sdata->type);
debugfs_remove(sdata->debugfsdir);
sdata->debugfsdir = NULL;
}
void ieee80211_debugfs_change_if_type(struct ieee80211_sub_if_data *sdata,
int oldtype)
{
del_files(sdata, oldtype);
add_files(sdata);
}
static int netdev_notify(struct notifier_block * nb,
unsigned long state,
void *ndev)
{
struct net_device *dev = ndev;
struct dentry *dir;
struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
char buf[10+IFNAMSIZ];
if (state != NETDEV_CHANGENAME)
return 0;
if (!dev->ieee80211_ptr || !dev->ieee80211_ptr->wiphy)
return 0;
if (dev->ieee80211_ptr->wiphy->privid != mac80211_wiphy_privid)
return 0;
sprintf(buf, "netdev:%s", dev->name);
dir = sdata->debugfsdir;
if (!debugfs_rename(dir->d_parent, dir, dir->d_parent, buf))
printk(KERN_ERR "mac80211: debugfs: failed to rename debugfs "
"dir to %s\n", buf);
return 0;
}
static struct notifier_block mac80211_debugfs_netdev_notifier = {
.notifier_call = netdev_notify,
};
void ieee80211_debugfs_netdev_init(void)
{
int err;
err = register_netdevice_notifier(&mac80211_debugfs_netdev_notifier);
if (err) {
printk(KERN_ERR
"mac80211: failed to install netdev notifier,"
" disabling per-netdev debugfs!\n");
} else
notif_registered = 1;
}
void ieee80211_debugfs_netdev_exit(void)
{
unregister_netdevice_notifier(&mac80211_debugfs_netdev_notifier);
notif_registered = 0;
}
|
