net/mac80211/debugfs_netdev.c

   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 "ieee80211_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                 ret = simple_read_from_buffer(userbuf, count, ppos, buf, ret);
  37         }
  38         read_unlock(&dev_base_lock);
  39         return ret;
  40 }
  41
  42 #ifdef CONFIG_MAC80211_MESH
  43 static ssize_t ieee80211_if_write(
  44         struct ieee80211_sub_if_data *sdata,
  45         char const __user *userbuf,
  46         size_t count, loff_t *ppos,
  47         int (*format)(struct ieee80211_sub_if_data *, char *))
  48 {
  49         char buf[10];
  50         int buf_size;
  51
  52         memset(buf, 0x00, sizeof(buf));
  53         buf_size = min(count, (sizeof(buf)-1));
  54         read_lock(&dev_base_lock);
  55         if (copy_from_user(buf, userbuf, buf_size))
  56                 goto endwrite;
  57         if (sdata->dev->reg_state == NETREG_REGISTERED)
  58                 (*format)(sdata, buf);
  59 endwrite:
  60         read_unlock(&dev_base_lock);
  61         return count;
  62 }
  63 #endif
  64
  65 #define IEEE80211_IF_FMT(name, field, format_string)                    \
  66 static ssize_t ieee80211_if_fmt_##name(                                 \
  67         const struct ieee80211_sub_if_data *sdata, char *buf,           \
  68         int buflen)                                                     \
  69 {                                                                       \
  70         return scnprintf(buf, buflen, format_string, sdata->field);     \
  71 }
  72 #define IEEE80211_IF_WFMT(name, field, type)                            \
  73 static int ieee80211_if_wfmt_##name(                                    \
  74         struct ieee80211_sub_if_data *sdata, char *buf)                 \
  75 {                                                                       \
  76         unsigned long tmp;                                              \
  77         char *endp;                                                     \
  78                                                                         \
  79         tmp = simple_strtoul(buf, &endp, 0);                            \
  80         if ((endp == buf) || ((type)tmp != tmp))                        \
  81                 return -EINVAL;                                         \
  82         sdata->field = tmp;                                             \
  83         return 0;                                                       \
  84 }
  85 #define IEEE80211_IF_FMT_DEC(name, field)                               \
  86                 IEEE80211_IF_FMT(name, field, "%d\n")
  87 #define IEEE80211_IF_FMT_HEX(name, field)                               \
  88                 IEEE80211_IF_FMT(name, field, "%#x\n")
  89 #define IEEE80211_IF_FMT_SIZE(name, field)                              \
  90                 IEEE80211_IF_FMT(name, field, "%zd\n")
  91
  92 #define IEEE80211_IF_FMT_ATOMIC(name, field)                            \
  93 static ssize_t ieee80211_if_fmt_##name(                                 \
  94         const struct ieee80211_sub_if_data *sdata,                      \
  95         char *buf, int buflen)                                          \
  96 {                                                                       \
  97         return scnprintf(buf, buflen, "%d\n", atomic_read(&sdata->field));\
  98 }
  99
 100 #define IEEE80211_IF_FMT_MAC(name, field)                               \
 101 static ssize_t ieee80211_if_fmt_##name(                                 \
 102         const struct ieee80211_sub_if_data *sdata, char *buf,           \
 103         int buflen)                                                     \
 104 {                                                                       \
 105         DECLARE_MAC_BUF(mac);                                           \
 106         return scnprintf(buf, buflen, "%s\n", print_mac(mac, sdata->field));\
 107 }
 108
 109 #define __IEEE80211_IF_FILE(name)                                       \
 110 static ssize_t ieee80211_if_read_##name(struct file *file,              \
 111                                         char __user *userbuf,           \
 112                                         size_t count, loff_t *ppos)     \
 113 {                                                                       \
 114         return ieee80211_if_read(file->private_data,                    \
 115                                  userbuf, count, ppos,                  \
 116                                  ieee80211_if_fmt_##name);              \
 117 }                                                                       \
 118 static const struct file_operations name##_ops = {                      \
 119         .read = ieee80211_if_read_##name,                               \
 120         .open = mac80211_open_file_generic,                             \
 121 }
 122
 123 #define IEEE80211_IF_FILE(name, field, format)                          \
 124                 IEEE80211_IF_FMT_##format(name, field)                  \
 125                 __IEEE80211_IF_FILE(name)
 126
 127 #define __IEEE80211_IF_WFILE(name)                                      \
 128 static ssize_t ieee80211_if_read_##name(struct file *file,              \
 129                                         char __user *userbuf,           \
 130                                         size_t count, loff_t *ppos)     \
 131 {                                                                       \
 132         return ieee80211_if_read(file->private_data,                    \
 133                                  userbuf, count, ppos,                  \
 134                                  ieee80211_if_fmt_##name);              \
 135 }                                                                       \
 136 static ssize_t ieee80211_if_write_##name(struct file *file,             \
 137                                         const char __user *userbuf,     \
 138                                         size_t count, loff_t *ppos)     \
 139 {                                                                       \
 140         return ieee80211_if_write(file->private_data,                   \
 141                                  userbuf, count, ppos,                  \
 142                                  ieee80211_if_wfmt_##name);             \
 143 }                                                                       \
 144 static const struct file_operations name##_ops = {                      \
 145         .read = ieee80211_if_read_##name,                               \
 146         .write = ieee80211_if_write_##name,                             \
 147         .open = mac80211_open_file_generic,                             \
 148 }
 149
 150 #define IEEE80211_IF_WFILE(name, field, format, type)                   \
 151                 IEEE80211_IF_FMT_##format(name, field)                  \
 152                 IEEE80211_IF_WFMT(name, field, type)                    \
 153                 __IEEE80211_IF_WFILE(name)
 154
 155 /* common attributes */
 156 IEEE80211_IF_FILE(channel_use, channel_use, DEC);
 157 IEEE80211_IF_FILE(drop_unencrypted, drop_unencrypted, DEC);
 158
 159 /* STA/IBSS attributes */
 160 IEEE80211_IF_FILE(state, u.sta.state, DEC);
 161 IEEE80211_IF_FILE(bssid, u.sta.bssid, MAC);
 162 IEEE80211_IF_FILE(prev_bssid, u.sta.prev_bssid, MAC);
 163 IEEE80211_IF_FILE(ssid_len, u.sta.ssid_len, SIZE);
 164 IEEE80211_IF_FILE(aid, u.sta.aid, DEC);
 165 IEEE80211_IF_FILE(ap_capab, u.sta.ap_capab, HEX);
 166 IEEE80211_IF_FILE(capab, u.sta.capab, HEX);
 167 IEEE80211_IF_FILE(extra_ie_len, u.sta.extra_ie_len, SIZE);
 168 IEEE80211_IF_FILE(auth_tries, u.sta.auth_tries, DEC);
 169 IEEE80211_IF_FILE(assoc_tries, u.sta.assoc_tries, DEC);
 170 IEEE80211_IF_FILE(auth_algs, u.sta.auth_algs, HEX);
 171 IEEE80211_IF_FILE(auth_alg, u.sta.auth_alg, DEC);
 172 IEEE80211_IF_FILE(auth_transaction, u.sta.auth_transaction, DEC);
 173 IEEE80211_IF_FILE(num_beacons_sta, u.sta.num_beacons, DEC);
 174
 175 static ssize_t ieee80211_if_fmt_flags(
 176         const struct ieee80211_sub_if_data *sdata, char *buf, int buflen)
 177 {
 178         return scnprintf(buf, buflen, "%s%s%s%s%s%s%s\n",
 179                  sdata->u.sta.flags & IEEE80211_STA_SSID_SET ? "SSID\n" : "",
 180                  sdata->u.sta.flags & IEEE80211_STA_BSSID_SET ? "BSSID\n" : "",
 181                  sdata->u.sta.flags & IEEE80211_STA_PREV_BSSID_SET ? "prev BSSID\n" : "",
 182                  sdata->u.sta.flags & IEEE80211_STA_AUTHENTICATED ? "AUTH\n" : "",
 183                  sdata->u.sta.flags & IEEE80211_STA_ASSOCIATED ? "ASSOC\n" : "",
 184                  sdata->u.sta.flags & IEEE80211_STA_PROBEREQ_POLL ? "PROBEREQ POLL\n" : "",
 185                  sdata->bss_conf.use_cts_prot ? "CTS prot\n" : "");
 186 }
 187 __IEEE80211_IF_FILE(flags);
 188
 189 /* AP attributes */
 190 IEEE80211_IF_FILE(num_sta_ps, u.ap.num_sta_ps, ATOMIC);
 191 IEEE80211_IF_FILE(dtim_count, u.ap.dtim_count, DEC);
 192 IEEE80211_IF_FILE(num_beacons, u.ap.num_beacons, DEC);
 193 IEEE80211_IF_FILE(force_unicast_rateidx, u.ap.force_unicast_rateidx, DEC);
 194 IEEE80211_IF_FILE(max_ratectrl_rateidx, u.ap.max_ratectrl_rateidx, DEC);
 195
 196 static ssize_t ieee80211_if_fmt_num_buffered_multicast(
 197         const struct ieee80211_sub_if_data *sdata, char *buf, int buflen)
 198 {
 199         return scnprintf(buf, buflen, "%u\n",
 200                          skb_queue_len(&sdata->u.ap.ps_bc_buf));
 201 }
 202 __IEEE80211_IF_FILE(num_buffered_multicast);
 203
 204 /* WDS attributes */
 205 IEEE80211_IF_FILE(peer, u.wds.remote_addr, MAC);
 206
 207 #ifdef CONFIG_MAC80211_MESH
 208 /* Mesh stats attributes */
 209 IEEE80211_IF_FILE(fwded_frames, u.sta.mshstats.fwded_frames, DEC);
 210 IEEE80211_IF_FILE(dropped_frames_ttl, u.sta.mshstats.dropped_frames_ttl, DEC);
 211 IEEE80211_IF_FILE(dropped_frames_no_route,
 212                 u.sta.mshstats.dropped_frames_no_route, DEC);
 213 IEEE80211_IF_FILE(estab_plinks, u.sta.mshstats.estab_plinks, ATOMIC);
 214
 215 /* Mesh parameters */
 216 IEEE80211_IF_WFILE(dot11MeshMaxRetries,
 217                 u.sta.mshcfg.dot11MeshMaxRetries, DEC, u8);
 218 IEEE80211_IF_WFILE(dot11MeshRetryTimeout,
 219                 u.sta.mshcfg.dot11MeshRetryTimeout, DEC, u16);
 220 IEEE80211_IF_WFILE(dot11MeshConfirmTimeout,
 221                 u.sta.mshcfg.dot11MeshConfirmTimeout, DEC, u16);
 222 IEEE80211_IF_WFILE(dot11MeshHoldingTimeout,
 223                 u.sta.mshcfg.dot11MeshHoldingTimeout, DEC, u16);
 224 IEEE80211_IF_WFILE(dot11MeshTTL, u.sta.mshcfg.dot11MeshTTL, DEC, u8);
 225 IEEE80211_IF_WFILE(auto_open_plinks, u.sta.mshcfg.auto_open_plinks, DEC, u8);
 226 IEEE80211_IF_WFILE(dot11MeshMaxPeerLinks,
 227                 u.sta.mshcfg.dot11MeshMaxPeerLinks, DEC, u16);
 228 IEEE80211_IF_WFILE(dot11MeshHWMPactivePathTimeout,
 229                 u.sta.mshcfg.dot11MeshHWMPactivePathTimeout, DEC, u32);
 230 IEEE80211_IF_WFILE(dot11MeshHWMPpreqMinInterval,
 231                 u.sta.mshcfg.dot11MeshHWMPpreqMinInterval, DEC, u16);
 232 IEEE80211_IF_WFILE(dot11MeshHWMPnetDiameterTraversalTime,
 233                 u.sta.mshcfg.dot11MeshHWMPnetDiameterTraversalTime, DEC, u16);
 234 IEEE80211_IF_WFILE(dot11MeshHWMPmaxPREQretries,
 235                 u.sta.mshcfg.dot11MeshHWMPmaxPREQretries, DEC, u8);
 236 IEEE80211_IF_WFILE(path_refresh_time,
 237                 u.sta.mshcfg.path_refresh_time, DEC, u32);
 238 IEEE80211_IF_WFILE(min_discovery_timeout,
 239                 u.sta.mshcfg.min_discovery_timeout, DEC, u16);
 240 #endif
 241
 242
 243 #define DEBUGFS_ADD(name, type)\
 244         sdata->debugfs.type.name = debugfs_create_file(#name, 0444,\
 245                 sdata->debugfsdir, sdata, &name##_ops);
 246
 247 static void add_sta_files(struct ieee80211_sub_if_data *sdata)
 248 {
 249         DEBUGFS_ADD(channel_use, sta);
 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(channel_use, ap);
 271         DEBUGFS_ADD(drop_unencrypted, ap);
 272         DEBUGFS_ADD(num_sta_ps, ap);
 273         DEBUGFS_ADD(dtim_count, ap);
 274         DEBUGFS_ADD(num_beacons, ap);
 275         DEBUGFS_ADD(force_unicast_rateidx, ap);
 276         DEBUGFS_ADD(max_ratectrl_rateidx, ap);
 277         DEBUGFS_ADD(num_buffered_multicast, ap);
 278 }
 279
 280 static void add_wds_files(struct ieee80211_sub_if_data *sdata)
 281 {
 282         DEBUGFS_ADD(channel_use, wds);
 283         DEBUGFS_ADD(drop_unencrypted, wds);
 284         DEBUGFS_ADD(peer, wds);
 285 }
 286
 287 static void add_vlan_files(struct ieee80211_sub_if_data *sdata)
 288 {
 289         DEBUGFS_ADD(channel_use, vlan);
 290         DEBUGFS_ADD(drop_unencrypted, vlan);
 291 }
 292
 293 static void add_monitor_files(struct ieee80211_sub_if_data *sdata)
 294 {
 295 }
 296
 297 #ifdef CONFIG_MAC80211_MESH
 298 #define MESHSTATS_ADD(name)\
 299         sdata->mesh_stats.name = debugfs_create_file(#name, 0444,\
 300                 sdata->mesh_stats_dir, sdata, &name##_ops);
 301
 302 static void add_mesh_stats(struct ieee80211_sub_if_data *sdata)
 303 {
 304         sdata->mesh_stats_dir = debugfs_create_dir("mesh_stats",
 305                                 sdata->debugfsdir);
 306         MESHSTATS_ADD(fwded_frames);
 307         MESHSTATS_ADD(dropped_frames_ttl);
 308         MESHSTATS_ADD(dropped_frames_no_route);
 309         MESHSTATS_ADD(estab_plinks);
 310 }
 311
 312 #define MESHPARAMS_ADD(name)\
 313         sdata->mesh_config.name = debugfs_create_file(#name, 0644,\
 314                 sdata->mesh_config_dir, sdata, &name##_ops);
 315
 316 static void add_mesh_config(struct ieee80211_sub_if_data *sdata)
 317 {
 318         sdata->mesh_config_dir = debugfs_create_dir("mesh_config",
 319                                 sdata->debugfsdir);
 320         MESHPARAMS_ADD(dot11MeshMaxRetries);
 321         MESHPARAMS_ADD(dot11MeshRetryTimeout);
 322         MESHPARAMS_ADD(dot11MeshConfirmTimeout);
 323         MESHPARAMS_ADD(dot11MeshHoldingTimeout);
 324         MESHPARAMS_ADD(dot11MeshTTL);
 325         MESHPARAMS_ADD(auto_open_plinks);
 326         MESHPARAMS_ADD(dot11MeshMaxPeerLinks);
 327         MESHPARAMS_ADD(dot11MeshHWMPactivePathTimeout);
 328         MESHPARAMS_ADD(dot11MeshHWMPpreqMinInterval);
 329         MESHPARAMS_ADD(dot11MeshHWMPnetDiameterTraversalTime);
 330         MESHPARAMS_ADD(dot11MeshHWMPmaxPREQretries);
 331         MESHPARAMS_ADD(path_refresh_time);
 332         MESHPARAMS_ADD(min_discovery_timeout);
 333 }
 334 #endif
 335
 336 static void add_files(struct ieee80211_sub_if_data *sdata)
 337 {
 338         if (!sdata->debugfsdir)
 339                 return;
 340
 341         switch (sdata->vif.type) {
 342         case IEEE80211_IF_TYPE_MESH_POINT:
 343 #ifdef CONFIG_MAC80211_MESH
 344                 add_mesh_stats(sdata);
 345                 add_mesh_config(sdata);
 346 #endif
 347                 /* fall through */
 348         case IEEE80211_IF_TYPE_STA:
 349         case IEEE80211_IF_TYPE_IBSS:
 350                 add_sta_files(sdata);
 351                 break;
 352         case IEEE80211_IF_TYPE_AP:
 353                 add_ap_files(sdata);
 354                 break;
 355         case IEEE80211_IF_TYPE_WDS:
 356                 add_wds_files(sdata);
 357                 break;
 358         case IEEE80211_IF_TYPE_MNTR:
 359                 add_monitor_files(sdata);
 360                 break;
 361         case IEEE80211_IF_TYPE_VLAN:
 362                 add_vlan_files(sdata);
 363                 break;
 364         default:
 365                 break;
 366         }
 367 }
 368
 369 #define DEBUGFS_DEL(name, type)                                 \
 370         do {                                                    \
 371                 debugfs_remove(sdata->debugfs.type.name);       \
 372                 sdata->debugfs.type.name = NULL;                \
 373         } while (0)
 374
 375 static void del_sta_files(struct ieee80211_sub_if_data *sdata)
 376 {
 377         DEBUGFS_DEL(channel_use, sta);
 378         DEBUGFS_DEL(drop_unencrypted, sta);
 379         DEBUGFS_DEL(state, sta);
 380         DEBUGFS_DEL(bssid, sta);
 381         DEBUGFS_DEL(prev_bssid, sta);
 382         DEBUGFS_DEL(ssid_len, sta);
 383         DEBUGFS_DEL(aid, sta);
 384         DEBUGFS_DEL(ap_capab, sta);
 385         DEBUGFS_DEL(capab, sta);
 386         DEBUGFS_DEL(extra_ie_len, sta);
 387         DEBUGFS_DEL(auth_tries, sta);
 388         DEBUGFS_DEL(assoc_tries, sta);
 389         DEBUGFS_DEL(auth_algs, sta);
 390         DEBUGFS_DEL(auth_alg, sta);
 391         DEBUGFS_DEL(auth_transaction, sta);
 392         DEBUGFS_DEL(flags, sta);
 393         DEBUGFS_DEL(num_beacons_sta, sta);
 394 }
 395
 396 static void del_ap_files(struct ieee80211_sub_if_data *sdata)
 397 {
 398         DEBUGFS_DEL(channel_use, ap);
 399         DEBUGFS_DEL(drop_unencrypted, ap);
 400         DEBUGFS_DEL(num_sta_ps, ap);
 401         DEBUGFS_DEL(dtim_count, ap);
 402         DEBUGFS_DEL(num_beacons, ap);
 403         DEBUGFS_DEL(force_unicast_rateidx, ap);
 404         DEBUGFS_DEL(max_ratectrl_rateidx, ap);
 405         DEBUGFS_DEL(num_buffered_multicast, ap);
 406 }
 407
 408 static void del_wds_files(struct ieee80211_sub_if_data *sdata)
 409 {
 410         DEBUGFS_DEL(channel_use, wds);
 411         DEBUGFS_DEL(drop_unencrypted, wds);
 412         DEBUGFS_DEL(peer, wds);
 413 }
 414
 415 static void del_vlan_files(struct ieee80211_sub_if_data *sdata)
 416 {
 417         DEBUGFS_DEL(channel_use, vlan);
 418         DEBUGFS_DEL(drop_unencrypted, vlan);
 419 }
 420
 421 static void del_monitor_files(struct ieee80211_sub_if_data *sdata)
 422 {
 423 }
 424
 425 #ifdef CONFIG_MAC80211_MESH
 426 #define MESHSTATS_DEL(name)                     \
 427         do {                                            \
 428                 debugfs_remove(sdata->mesh_stats.name); \
 429                 sdata->mesh_stats.name = NULL;          \
 430         } while (0)
 431
 432 static void del_mesh_stats(struct ieee80211_sub_if_data *sdata)
 433 {
 434         MESHSTATS_DEL(fwded_frames);
 435         MESHSTATS_DEL(dropped_frames_ttl);
 436         MESHSTATS_DEL(dropped_frames_no_route);
 437         MESHSTATS_DEL(estab_plinks);
 438         debugfs_remove(sdata->mesh_stats_dir);
 439         sdata->mesh_stats_dir = NULL;
 440 }
 441
 442 #define MESHPARAMS_DEL(name)                    \
 443         do {                                            \
 444                 debugfs_remove(sdata->mesh_config.name);        \
 445                 sdata->mesh_config.name = NULL;         \
 446         } while (0)
 447
 448 static void del_mesh_config(struct ieee80211_sub_if_data *sdata)
 449 {
 450         MESHPARAMS_DEL(dot11MeshMaxRetries);
 451         MESHPARAMS_DEL(dot11MeshRetryTimeout);
 452         MESHPARAMS_DEL(dot11MeshConfirmTimeout);
 453         MESHPARAMS_DEL(dot11MeshHoldingTimeout);
 454         MESHPARAMS_DEL(dot11MeshTTL);
 455         MESHPARAMS_DEL(auto_open_plinks);
 456         MESHPARAMS_DEL(dot11MeshMaxPeerLinks);
 457         MESHPARAMS_DEL(dot11MeshHWMPactivePathTimeout);
 458         MESHPARAMS_DEL(dot11MeshHWMPpreqMinInterval);
 459         MESHPARAMS_DEL(dot11MeshHWMPnetDiameterTraversalTime);
 460         MESHPARAMS_DEL(dot11MeshHWMPmaxPREQretries);
 461         MESHPARAMS_DEL(path_refresh_time);
 462         MESHPARAMS_DEL(min_discovery_timeout);
 463         debugfs_remove(sdata->mesh_config_dir);
 464         sdata->mesh_config_dir = NULL;
 465 }
 466 #endif
 467
 468 static void del_files(struct ieee80211_sub_if_data *sdata, int type)
 469 {
 470         if (!sdata->debugfsdir)
 471                 return;
 472
 473         switch (type) {
 474         case IEEE80211_IF_TYPE_MESH_POINT:
 475 #ifdef CONFIG_MAC80211_MESH
 476                 del_mesh_stats(sdata);
 477                 del_mesh_config(sdata);
 478 #endif
 479                 /* fall through */
 480         case IEEE80211_IF_TYPE_STA:
 481         case IEEE80211_IF_TYPE_IBSS:
 482                 del_sta_files(sdata);
 483                 break;
 484         case IEEE80211_IF_TYPE_AP:
 485                 del_ap_files(sdata);
 486                 break;
 487         case IEEE80211_IF_TYPE_WDS:
 488                 del_wds_files(sdata);
 489                 break;
 490         case IEEE80211_IF_TYPE_MNTR:
 491                 del_monitor_files(sdata);
 492                 break;
 493         case IEEE80211_IF_TYPE_VLAN:
 494                 del_vlan_files(sdata);
 495                 break;
 496         default:
 497                 break;
 498         }
 499 }
 500
 501 static int notif_registered;
 502
 503 void ieee80211_debugfs_add_netdev(struct ieee80211_sub_if_data *sdata)
 504 {
 505         char buf[10+IFNAMSIZ];
 506
 507         if (!notif_registered)
 508                 return;
 509
 510         sprintf(buf, "netdev:%s", sdata->dev->name);
 511         sdata->debugfsdir = debugfs_create_dir(buf,
 512                 sdata->local->hw.wiphy->debugfsdir);
 513 }
 514
 515 void ieee80211_debugfs_remove_netdev(struct ieee80211_sub_if_data *sdata)
 516 {
 517         del_files(sdata, sdata->vif.type);
 518         debugfs_remove(sdata->debugfsdir);
 519         sdata->debugfsdir = NULL;
 520 }
 521
 522 void ieee80211_debugfs_change_if_type(struct ieee80211_sub_if_data *sdata,
 523                                       int oldtype)
 524 {
 525         del_files(sdata, oldtype);
 526         add_files(sdata);
 527 }
 528
 529 static int netdev_notify(struct notifier_block * nb,
 530                          unsigned long state,
 531                          void *ndev)
 532 {
 533         struct net_device *dev = ndev;
 534         struct dentry *dir;
 535         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 536         char buf[10+IFNAMSIZ];
 537
 538         if (state != NETDEV_CHANGENAME)
 539                 return 0;
 540
 541         if (!dev->ieee80211_ptr || !dev->ieee80211_ptr->wiphy)
 542                 return 0;
 543
 544         if (dev->ieee80211_ptr->wiphy->privid != mac80211_wiphy_privid)
 545                 return 0;
 546
 547         sprintf(buf, "netdev:%s", dev->name);
 548         dir = sdata->debugfsdir;
 549         if (!debugfs_rename(dir->d_parent, dir, dir->d_parent, buf))
 550                 printk(KERN_ERR "mac80211: debugfs: failed to rename debugfs "
 551                        "dir to %s\n", buf);
 552
 553         return 0;
 554 }
 555
 556 static struct notifier_block mac80211_debugfs_netdev_notifier = {
 557         .notifier_call = netdev_notify,
 558 };
 559
 560 void ieee80211_debugfs_netdev_init(void)
 561 {
 562         int err;
 563
 564         err = register_netdevice_notifier(&mac80211_debugfs_netdev_notifier);
 565         if (err) {
 566                 printk(KERN_ERR
 567                        "mac80211: failed to install netdev notifier,"
 568                        " disabling per-netdev debugfs!\n");
 569         } else
 570                 notif_registered = 1;
 571 }
 572
 573 void ieee80211_debugfs_netdev_exit(void)
 574 {
 575         unregister_netdevice_notifier(&mac80211_debugfs_netdev_notifier);
 576         notif_registered = 0;
 577 }