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ixgb: fix bug in descriptor ring due to prefetch corruption
[linux-2.6/mini2440.git] / net / mac80211 / debugfs_netdev.c
blobb2089b2da48a2c6b0f6e963532335558109c4ecb
1 /*
2 * Copyright (c) 2006 Jiri Benc <jbenc@suse.cz>
3 * Copyright 2007 Johannes Berg <johannes@sipsolutions.net>
4 *
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License version 2 as
7 * published by the Free Software Foundation.
8 */
9
10 #include <linux/kernel.h>
11 #include <linux/device.h>
12 #include <linux/if.h>
13 #include <linux/interrupt.h>
14 #include <linux/netdevice.h>
15 #include <linux/rtnetlink.h>
16 #include <linux/notifier.h>
17 #include <net/mac80211.h>
18 #include <net/cfg80211.h>
19 #include "ieee80211_i.h"
20 #include "rate.h"
21 #include "debugfs.h"
22 #include "debugfs_netdev.h"
23
24 static ssize_t ieee80211_if_read(
25 struct ieee80211_sub_if_data *sdata,
26 char __user *userbuf,
27 size_t count, loff_t *ppos,
28 ssize_t (*format)(const struct ieee80211_sub_if_data *, char *, int))
29 {
30 char buf[70];
31 ssize_t ret = -EINVAL;
32
33 read_lock(&dev_base_lock);
34 if (sdata->dev->reg_state == NETREG_REGISTERED)
35 ret = (*format)(sdata, buf, sizeof(buf));
36 read_unlock(&dev_base_lock);
37
38 if (ret != -EINVAL)
39 ret = simple_read_from_buffer(userbuf, count, ppos, buf, ret);
40
41 return ret;
42 }
43
44 #ifdef CONFIG_MAC80211_MESH
45 static ssize_t ieee80211_if_write(
46 struct ieee80211_sub_if_data *sdata,
47 char const __user *userbuf,
48 size_t count, loff_t *ppos,
49 int (*format)(struct ieee80211_sub_if_data *, char *))
50 {
51 char buf[10];
52 int buf_size;
53
54 memset(buf, 0x00, sizeof(buf));
55 buf_size = min(count, (sizeof(buf)-1));
56 if (copy_from_user(buf, userbuf, buf_size))
57 return count;
58 read_lock(&dev_base_lock);
59 if (sdata->dev->reg_state == NETREG_REGISTERED)
60 (*format)(sdata, buf);
61 read_unlock(&dev_base_lock);
62
63 return count;
64 }
65 #endif
66
67 #define IEEE80211_IF_FMT(name, field, format_string) \
68 static ssize_t ieee80211_if_fmt_##name( \
69 const struct ieee80211_sub_if_data *sdata, char *buf, \
70 int buflen) \
71 { \
72 return scnprintf(buf, buflen, format_string, sdata->field); \
73 }
74 #define IEEE80211_IF_WFMT(name, field, type) \
75 static int ieee80211_if_wfmt_##name( \
76 struct ieee80211_sub_if_data *sdata, char *buf) \
77 { \
78 unsigned long tmp; \
79 char *endp; \
80 \
81 tmp = simple_strtoul(buf, &endp, 0); \
82 if ((endp == buf) || ((type)tmp != tmp)) \
83 return -EINVAL; \
84 sdata->field = tmp; \
85 return 0; \
86 }
87 #define IEEE80211_IF_FMT_DEC(name, field) \
88 IEEE80211_IF_FMT(name, field, "%d\n")
89 #define IEEE80211_IF_FMT_HEX(name, field) \
90 IEEE80211_IF_FMT(name, field, "%#x\n")
91 #define IEEE80211_IF_FMT_SIZE(name, field) \
92 IEEE80211_IF_FMT(name, field, "%zd\n")
93
94 #define IEEE80211_IF_FMT_ATOMIC(name, field) \
95 static ssize_t ieee80211_if_fmt_##name( \
96 const struct ieee80211_sub_if_data *sdata, \
97 char *buf, int buflen) \
98 { \
99 return scnprintf(buf, buflen, "%d\n", atomic_read(&sdata->field));\
100 }
101
102 #define IEEE80211_IF_FMT_MAC(name, field) \
103 static ssize_t ieee80211_if_fmt_##name( \
104 const struct ieee80211_sub_if_data *sdata, char *buf, \
105 int buflen) \
106 { \
107 DECLARE_MAC_BUF(mac); \
108 return scnprintf(buf, buflen, "%s\n", print_mac(mac, sdata->field));\
109 }
110
111 #define __IEEE80211_IF_FILE(name) \
112 static ssize_t ieee80211_if_read_##name(struct file *file, \
113 char __user *userbuf, \
114 size_t count, loff_t *ppos) \
115 { \
116 return ieee80211_if_read(file->private_data, \
117 userbuf, count, ppos, \
118 ieee80211_if_fmt_##name); \
119 } \
120 static const struct file_operations name##_ops = { \
121 .read = ieee80211_if_read_##name, \
122 .open = mac80211_open_file_generic, \
123 }
124
125 #define IEEE80211_IF_FILE(name, field, format) \
126 IEEE80211_IF_FMT_##format(name, field) \
127 __IEEE80211_IF_FILE(name)
128
129 #define __IEEE80211_IF_WFILE(name) \
130 static ssize_t ieee80211_if_read_##name(struct file *file, \
131 char __user *userbuf, \
132 size_t count, loff_t *ppos) \
133 { \
134 return ieee80211_if_read(file->private_data, \
135 userbuf, count, ppos, \
136 ieee80211_if_fmt_##name); \
137 } \
138 static ssize_t ieee80211_if_write_##name(struct file *file, \
139 const char __user *userbuf, \
140 size_t count, loff_t *ppos) \
141 { \
142 return ieee80211_if_write(file->private_data, \
143 userbuf, count, ppos, \
144 ieee80211_if_wfmt_##name); \
145 } \
146 static const struct file_operations name##_ops = { \
147 .read = ieee80211_if_read_##name, \
148 .write = ieee80211_if_write_##name, \
149 .open = mac80211_open_file_generic, \
150 }
151
152 #define IEEE80211_IF_WFILE(name, field, format, type) \
153 IEEE80211_IF_FMT_##format(name, field) \
154 IEEE80211_IF_WFMT(name, field, type) \
155 __IEEE80211_IF_WFILE(name)
156
157 /* common attributes */
158 IEEE80211_IF_FILE(drop_unencrypted, drop_unencrypted, DEC);
159
160 /* STA/IBSS attributes */
161 IEEE80211_IF_FILE(state, u.sta.state, DEC);
162 IEEE80211_IF_FILE(bssid, u.sta.bssid, MAC);
163 IEEE80211_IF_FILE(prev_bssid, u.sta.prev_bssid, MAC);
164 IEEE80211_IF_FILE(ssid_len, u.sta.ssid_len, SIZE);
165 IEEE80211_IF_FILE(aid, u.sta.aid, DEC);
166 IEEE80211_IF_FILE(ap_capab, u.sta.ap_capab, HEX);
167 IEEE80211_IF_FILE(capab, u.sta.capab, HEX);
168 IEEE80211_IF_FILE(extra_ie_len, u.sta.extra_ie_len, SIZE);
169 IEEE80211_IF_FILE(auth_tries, u.sta.auth_tries, DEC);
170 IEEE80211_IF_FILE(assoc_tries, u.sta.assoc_tries, DEC);
171 IEEE80211_IF_FILE(auth_algs, u.sta.auth_algs, HEX);
172 IEEE80211_IF_FILE(auth_alg, u.sta.auth_alg, DEC);
173 IEEE80211_IF_FILE(auth_transaction, u.sta.auth_transaction, DEC);
174 IEEE80211_IF_FILE(num_beacons_sta, u.sta.num_beacons, DEC);
175
176 static ssize_t ieee80211_if_fmt_flags(
177 const struct ieee80211_sub_if_data *sdata, char *buf, int buflen)
178 {
179 return scnprintf(buf, buflen, "%s%s%s%s%s%s%s\n",
180 sdata->u.sta.flags & IEEE80211_STA_SSID_SET ? "SSID\n" : "",
181 sdata->u.sta.flags & IEEE80211_STA_BSSID_SET ? "BSSID\n" : "",
182 sdata->u.sta.flags & IEEE80211_STA_PREV_BSSID_SET ? "prev BSSID\n" : "",
183 sdata->u.sta.flags & IEEE80211_STA_AUTHENTICATED ? "AUTH\n" : "",
184 sdata->u.sta.flags & IEEE80211_STA_ASSOCIATED ? "ASSOC\n" : "",
185 sdata->u.sta.flags & IEEE80211_STA_PROBEREQ_POLL ? "PROBEREQ POLL\n" : "",
186 sdata->bss_conf.use_cts_prot ? "CTS prot\n" : "");
187 }
188 __IEEE80211_IF_FILE(flags);
189
190 /* AP attributes */
191 IEEE80211_IF_FILE(num_sta_ps, u.ap.num_sta_ps, ATOMIC);
192 IEEE80211_IF_FILE(dtim_count, u.ap.dtim_count, DEC);
193 IEEE80211_IF_FILE(num_beacons, u.ap.num_beacons, DEC);
194 IEEE80211_IF_FILE(force_unicast_rateidx, u.ap.force_unicast_rateidx, DEC);
195 IEEE80211_IF_FILE(max_ratectrl_rateidx, u.ap.max_ratectrl_rateidx, DEC);
196
197 static ssize_t ieee80211_if_fmt_num_buffered_multicast(
198 const struct ieee80211_sub_if_data *sdata, char *buf, int buflen)
199 {
200 return scnprintf(buf, buflen, "%u\n",
201 skb_queue_len(&sdata->u.ap.ps_bc_buf));
202 }
203 __IEEE80211_IF_FILE(num_buffered_multicast);
204
205 /* WDS attributes */
206 IEEE80211_IF_FILE(peer, u.wds.remote_addr, MAC);
207
208 #ifdef CONFIG_MAC80211_MESH
209 /* Mesh stats attributes */
210 IEEE80211_IF_FILE(fwded_frames, u.sta.mshstats.fwded_frames, DEC);
211 IEEE80211_IF_FILE(dropped_frames_ttl, u.sta.mshstats.dropped_frames_ttl, DEC);
212 IEEE80211_IF_FILE(dropped_frames_no_route,
213 u.sta.mshstats.dropped_frames_no_route, DEC);
214 IEEE80211_IF_FILE(estab_plinks, u.sta.mshstats.estab_plinks, ATOMIC);
215
216 /* Mesh parameters */
217 IEEE80211_IF_WFILE(dot11MeshMaxRetries,
218 u.sta.mshcfg.dot11MeshMaxRetries, DEC, u8);
219 IEEE80211_IF_WFILE(dot11MeshRetryTimeout,
220 u.sta.mshcfg.dot11MeshRetryTimeout, DEC, u16);
221 IEEE80211_IF_WFILE(dot11MeshConfirmTimeout,
222 u.sta.mshcfg.dot11MeshConfirmTimeout, DEC, u16);
223 IEEE80211_IF_WFILE(dot11MeshHoldingTimeout,
224 u.sta.mshcfg.dot11MeshHoldingTimeout, DEC, u16);
225 IEEE80211_IF_WFILE(dot11MeshTTL, u.sta.mshcfg.dot11MeshTTL, DEC, u8);
226 IEEE80211_IF_WFILE(auto_open_plinks, u.sta.mshcfg.auto_open_plinks, DEC, u8);
227 IEEE80211_IF_WFILE(dot11MeshMaxPeerLinks,
228 u.sta.mshcfg.dot11MeshMaxPeerLinks, DEC, u16);
229 IEEE80211_IF_WFILE(dot11MeshHWMPactivePathTimeout,
230 u.sta.mshcfg.dot11MeshHWMPactivePathTimeout, DEC, u32);
231 IEEE80211_IF_WFILE(dot11MeshHWMPpreqMinInterval,
232 u.sta.mshcfg.dot11MeshHWMPpreqMinInterval, DEC, u16);
233 IEEE80211_IF_WFILE(dot11MeshHWMPnetDiameterTraversalTime,
234 u.sta.mshcfg.dot11MeshHWMPnetDiameterTraversalTime, DEC, u16);
235 IEEE80211_IF_WFILE(dot11MeshHWMPmaxPREQretries,
236 u.sta.mshcfg.dot11MeshHWMPmaxPREQretries, DEC, u8);
237 IEEE80211_IF_WFILE(path_refresh_time,
238 u.sta.mshcfg.path_refresh_time, DEC, u32);
239 IEEE80211_IF_WFILE(min_discovery_timeout,
240 u.sta.mshcfg.min_discovery_timeout, DEC, u16);
241 #endif
242
243
244 #define DEBUGFS_ADD(name, type)\
245 sdata->debugfs.type.name = debugfs_create_file(#name, 0400,\
246 sdata->debugfsdir, sdata, &name##_ops);
247
248 static void add_sta_files(struct ieee80211_sub_if_data *sdata)
249 {
250 DEBUGFS_ADD(drop_unencrypted, sta);
251 DEBUGFS_ADD(state, sta);
252 DEBUGFS_ADD(bssid, sta);
253 DEBUGFS_ADD(prev_bssid, sta);
254 DEBUGFS_ADD(ssid_len, sta);
255 DEBUGFS_ADD(aid, sta);
256 DEBUGFS_ADD(ap_capab, sta);
257 DEBUGFS_ADD(capab, sta);
258 DEBUGFS_ADD(extra_ie_len, sta);
259 DEBUGFS_ADD(auth_tries, sta);
260 DEBUGFS_ADD(assoc_tries, sta);
261 DEBUGFS_ADD(auth_algs, sta);
262 DEBUGFS_ADD(auth_alg, sta);
263 DEBUGFS_ADD(auth_transaction, sta);
264 DEBUGFS_ADD(flags, sta);
265 DEBUGFS_ADD(num_beacons_sta, sta);
266 }
267
268 static void add_ap_files(struct ieee80211_sub_if_data *sdata)
269 {
270 DEBUGFS_ADD(drop_unencrypted, ap);
271 DEBUGFS_ADD(num_sta_ps, ap);
272 DEBUGFS_ADD(dtim_count, ap);
273 DEBUGFS_ADD(num_beacons, ap);
274 DEBUGFS_ADD(force_unicast_rateidx, ap);
275 DEBUGFS_ADD(max_ratectrl_rateidx, ap);
276 DEBUGFS_ADD(num_buffered_multicast, ap);
277 }
278
279 static void add_wds_files(struct ieee80211_sub_if_data *sdata)
280 {
281 DEBUGFS_ADD(drop_unencrypted, wds);
282 DEBUGFS_ADD(peer, wds);
283 }
284
285 static void add_vlan_files(struct ieee80211_sub_if_data *sdata)
286 {
287 DEBUGFS_ADD(drop_unencrypted, vlan);
288 }
289
290 static void add_monitor_files(struct ieee80211_sub_if_data *sdata)
291 {
292 }
293
294 #ifdef CONFIG_MAC80211_MESH
295 #define MESHSTATS_ADD(name)\
296 sdata->mesh_stats.name = debugfs_create_file(#name, 0400,\
297 sdata->mesh_stats_dir, sdata, &name##_ops);
298
299 static void add_mesh_stats(struct ieee80211_sub_if_data *sdata)
300 {
301 sdata->mesh_stats_dir = debugfs_create_dir("mesh_stats",
302 sdata->debugfsdir);
303 MESHSTATS_ADD(fwded_frames);
304 MESHSTATS_ADD(dropped_frames_ttl);
305 MESHSTATS_ADD(dropped_frames_no_route);
306 MESHSTATS_ADD(estab_plinks);
307 }
308
309 #define MESHPARAMS_ADD(name)\
310 sdata->mesh_config.name = debugfs_create_file(#name, 0600,\
311 sdata->mesh_config_dir, sdata, &name##_ops);
312
313 static void add_mesh_config(struct ieee80211_sub_if_data *sdata)
314 {
315 sdata->mesh_config_dir = debugfs_create_dir("mesh_config",
316 sdata->debugfsdir);
317 MESHPARAMS_ADD(dot11MeshMaxRetries);
318 MESHPARAMS_ADD(dot11MeshRetryTimeout);
319 MESHPARAMS_ADD(dot11MeshConfirmTimeout);
320 MESHPARAMS_ADD(dot11MeshHoldingTimeout);
321 MESHPARAMS_ADD(dot11MeshTTL);
322 MESHPARAMS_ADD(auto_open_plinks);
323 MESHPARAMS_ADD(dot11MeshMaxPeerLinks);
324 MESHPARAMS_ADD(dot11MeshHWMPactivePathTimeout);
325 MESHPARAMS_ADD(dot11MeshHWMPpreqMinInterval);
326 MESHPARAMS_ADD(dot11MeshHWMPnetDiameterTraversalTime);
327 MESHPARAMS_ADD(dot11MeshHWMPmaxPREQretries);
328 MESHPARAMS_ADD(path_refresh_time);
329 MESHPARAMS_ADD(min_discovery_timeout);
330 }
331 #endif
332
333 static void add_files(struct ieee80211_sub_if_data *sdata)
334 {
335 if (!sdata->debugfsdir)
336 return;
337
338 switch (sdata->vif.type) {
339 case IEEE80211_IF_TYPE_MESH_POINT:
340 #ifdef CONFIG_MAC80211_MESH
341 add_mesh_stats(sdata);
342 add_mesh_config(sdata);
343 #endif
344 /* fall through */
345 case IEEE80211_IF_TYPE_STA:
346 case IEEE80211_IF_TYPE_IBSS:
347 add_sta_files(sdata);
348 break;
349 case IEEE80211_IF_TYPE_AP:
350 add_ap_files(sdata);
351 break;
352 case IEEE80211_IF_TYPE_WDS:
353 add_wds_files(sdata);
354 break;
355 case IEEE80211_IF_TYPE_MNTR:
356 add_monitor_files(sdata);
357 break;
358 case IEEE80211_IF_TYPE_VLAN:
359 add_vlan_files(sdata);
360 break;
361 default:
362 break;
363 }
364 }
365
366 #define DEBUGFS_DEL(name, type) \
367 do { \
368 debugfs_remove(sdata->debugfs.type.name); \
369 sdata->debugfs.type.name = NULL; \
370 } while (0)
371
372 static void del_sta_files(struct ieee80211_sub_if_data *sdata)
373 {
374 DEBUGFS_DEL(drop_unencrypted, sta);
375 DEBUGFS_DEL(state, sta);
376 DEBUGFS_DEL(bssid, sta);
377 DEBUGFS_DEL(prev_bssid, sta);
378 DEBUGFS_DEL(ssid_len, sta);
379 DEBUGFS_DEL(aid, sta);
380 DEBUGFS_DEL(ap_capab, sta);
381 DEBUGFS_DEL(capab, sta);
382 DEBUGFS_DEL(extra_ie_len, sta);
383 DEBUGFS_DEL(auth_tries, sta);
384 DEBUGFS_DEL(assoc_tries, sta);
385 DEBUGFS_DEL(auth_algs, sta);
386 DEBUGFS_DEL(auth_alg, sta);
387 DEBUGFS_DEL(auth_transaction, sta);
388 DEBUGFS_DEL(flags, sta);
389 DEBUGFS_DEL(num_beacons_sta, sta);
390 }
391
392 static void del_ap_files(struct ieee80211_sub_if_data *sdata)
393 {
394 DEBUGFS_DEL(drop_unencrypted, ap);
395 DEBUGFS_DEL(num_sta_ps, ap);
396 DEBUGFS_DEL(dtim_count, ap);
397 DEBUGFS_DEL(num_beacons, ap);
398 DEBUGFS_DEL(force_unicast_rateidx, ap);
399 DEBUGFS_DEL(max_ratectrl_rateidx, ap);
400 DEBUGFS_DEL(num_buffered_multicast, ap);
401 }
402
403 static void del_wds_files(struct ieee80211_sub_if_data *sdata)
404 {
405 DEBUGFS_DEL(drop_unencrypted, wds);
406 DEBUGFS_DEL(peer, wds);
407 }
408
409 static void del_vlan_files(struct ieee80211_sub_if_data *sdata)
410 {
411 DEBUGFS_DEL(drop_unencrypted, vlan);
412 }
413
414 static void del_monitor_files(struct ieee80211_sub_if_data *sdata)
415 {
416 }
417
418 #ifdef CONFIG_MAC80211_MESH
419 #define MESHSTATS_DEL(name) \
420 do { \
421 debugfs_remove(sdata->mesh_stats.name); \
422 sdata->mesh_stats.name = NULL; \
423 } while (0)
424
425 static void del_mesh_stats(struct ieee80211_sub_if_data *sdata)
426 {
427 MESHSTATS_DEL(fwded_frames);
428 MESHSTATS_DEL(dropped_frames_ttl);
429 MESHSTATS_DEL(dropped_frames_no_route);
430 MESHSTATS_DEL(estab_plinks);
431 debugfs_remove(sdata->mesh_stats_dir);
432 sdata->mesh_stats_dir = NULL;
433 }
434
435 #define MESHPARAMS_DEL(name) \
436 do { \
437 debugfs_remove(sdata->mesh_config.name); \
438 sdata->mesh_config.name = NULL; \
439 } while (0)
440
441 static void del_mesh_config(struct ieee80211_sub_if_data *sdata)
442 {
443 MESHPARAMS_DEL(dot11MeshMaxRetries);
444 MESHPARAMS_DEL(dot11MeshRetryTimeout);
445 MESHPARAMS_DEL(dot11MeshConfirmTimeout);
446 MESHPARAMS_DEL(dot11MeshHoldingTimeout);
447 MESHPARAMS_DEL(dot11MeshTTL);
448 MESHPARAMS_DEL(auto_open_plinks);
449 MESHPARAMS_DEL(dot11MeshMaxPeerLinks);
450 MESHPARAMS_DEL(dot11MeshHWMPactivePathTimeout);
451 MESHPARAMS_DEL(dot11MeshHWMPpreqMinInterval);
452 MESHPARAMS_DEL(dot11MeshHWMPnetDiameterTraversalTime);
453 MESHPARAMS_DEL(dot11MeshHWMPmaxPREQretries);
454 MESHPARAMS_DEL(path_refresh_time);
455 MESHPARAMS_DEL(min_discovery_timeout);
456 debugfs_remove(sdata->mesh_config_dir);
457 sdata->mesh_config_dir = NULL;
458 }
459 #endif
460
461 static void del_files(struct ieee80211_sub_if_data *sdata, int type)
462 {
463 if (!sdata->debugfsdir)
464 return;
465
466 switch (type) {
467 case IEEE80211_IF_TYPE_MESH_POINT:
468 #ifdef CONFIG_MAC80211_MESH
469 del_mesh_stats(sdata);
470 del_mesh_config(sdata);
471 #endif
472 /* fall through */
473 case IEEE80211_IF_TYPE_STA:
474 case IEEE80211_IF_TYPE_IBSS:
475 del_sta_files(sdata);
476 break;
477 case IEEE80211_IF_TYPE_AP:
478 del_ap_files(sdata);
479 break;
480 case IEEE80211_IF_TYPE_WDS:
481 del_wds_files(sdata);
482 break;
483 case IEEE80211_IF_TYPE_MNTR:
484 del_monitor_files(sdata);
485 break;
486 case IEEE80211_IF_TYPE_VLAN:
487 del_vlan_files(sdata);
488 break;
489 default:
490 break;
491 }
492 }
493
494 static int notif_registered;
495
496 void ieee80211_debugfs_add_netdev(struct ieee80211_sub_if_data *sdata)
497 {
498 char buf[10+IFNAMSIZ];
499
500 if (!notif_registered)
501 return;
502
503 sprintf(buf, "netdev:%s", sdata->dev->name);
504 sdata->debugfsdir = debugfs_create_dir(buf,
505 sdata->local->hw.wiphy->debugfsdir);
506 }
507
508 void ieee80211_debugfs_remove_netdev(struct ieee80211_sub_if_data *sdata)
509 {
510 del_files(sdata, sdata->vif.type);
511 debugfs_remove(sdata->debugfsdir);
512 sdata->debugfsdir = NULL;
513 }
514
515 void ieee80211_debugfs_change_if_type(struct ieee80211_sub_if_data *sdata,
516 int oldtype)
517 {
518 del_files(sdata, oldtype);
519 add_files(sdata);
520 }
521
522 static int netdev_notify(struct notifier_block *nb,
523 unsigned long state,
524 void *ndev)
525 {
526 struct net_device *dev = ndev;
527 struct dentry *dir;
528 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
529 char buf[10+IFNAMSIZ];
530
531 if (state != NETDEV_CHANGENAME)
532 return 0;
533
534 if (!dev->ieee80211_ptr || !dev->ieee80211_ptr->wiphy)
535 return 0;
536
537 if (dev->ieee80211_ptr->wiphy->privid != mac80211_wiphy_privid)
538 return 0;
539
540 sprintf(buf, "netdev:%s", dev->name);
541 dir = sdata->debugfsdir;
542 if (!debugfs_rename(dir->d_parent, dir, dir->d_parent, buf))
543 printk(KERN_ERR "mac80211: debugfs: failed to rename debugfs "
544 "dir to %s\n", buf);
545
546 return 0;
547 }
548
549 static struct notifier_block mac80211_debugfs_netdev_notifier = {
550 .notifier_call = netdev_notify,
551 };
552
553 void ieee80211_debugfs_netdev_init(void)
554 {
555 int err;
556
557 err = register_netdevice_notifier(&mac80211_debugfs_netdev_notifier);
558 if (err) {
559 printk(KERN_ERR
560 "mac80211: failed to install netdev notifier,"
561 " disabling per-netdev debugfs!\n");
562 } else
563 notif_registered = 1;
564 }
565
566 void ieee80211_debugfs_netdev_exit(void)
567 {
568 unregister_netdevice_notifier(&mac80211_debugfs_netdev_notifier);
569 notif_registered = 0;
570 }
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