2 * Copyright (c) 2006 Jiri Benc <jbenc@suse.cz>
3 * Copyright 2007 Johannes Berg <johannes@sipsolutions.net>
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.
10 #include <linux/kernel.h>
11 #include <linux/device.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"
22 #include "debugfs_netdev.h"
24 static ssize_t
ieee80211_if_read(
25 struct ieee80211_sub_if_data
*sdata
,
27 size_t count
, loff_t
*ppos
,
28 ssize_t (*format
)(const struct ieee80211_sub_if_data
*, char *, int))
31 ssize_t ret
= -EINVAL
;
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
);
39 ret
= simple_read_from_buffer(userbuf
, count
, ppos
, buf
, ret
);
44 #define IEEE80211_IF_FMT(name, field, format_string) \
45 static ssize_t ieee80211_if_fmt_##name( \
46 const struct ieee80211_sub_if_data *sdata, char *buf, \
49 return scnprintf(buf, buflen, format_string, sdata->field); \
51 #define IEEE80211_IF_FMT_DEC(name, field) \
52 IEEE80211_IF_FMT(name, field, "%d\n")
53 #define IEEE80211_IF_FMT_HEX(name, field) \
54 IEEE80211_IF_FMT(name, field, "%#x\n")
55 #define IEEE80211_IF_FMT_SIZE(name, field) \
56 IEEE80211_IF_FMT(name, field, "%zd\n")
58 #define IEEE80211_IF_FMT_ATOMIC(name, field) \
59 static ssize_t ieee80211_if_fmt_##name( \
60 const struct ieee80211_sub_if_data *sdata, \
61 char *buf, int buflen) \
63 return scnprintf(buf, buflen, "%d\n", atomic_read(&sdata->field));\
66 #define IEEE80211_IF_FMT_MAC(name, field) \
67 static ssize_t ieee80211_if_fmt_##name( \
68 const struct ieee80211_sub_if_data *sdata, char *buf, \
71 return scnprintf(buf, buflen, "%pM\n", sdata->field); \
74 #define __IEEE80211_IF_FILE(name) \
75 static ssize_t ieee80211_if_read_##name(struct file *file, \
76 char __user *userbuf, \
77 size_t count, loff_t *ppos) \
79 return ieee80211_if_read(file->private_data, \
80 userbuf, count, ppos, \
81 ieee80211_if_fmt_##name); \
83 static const struct file_operations name##_ops = { \
84 .read = ieee80211_if_read_##name, \
85 .open = mac80211_open_file_generic, \
88 #define IEEE80211_IF_FILE(name, field, format) \
89 IEEE80211_IF_FMT_##format(name, field) \
90 __IEEE80211_IF_FILE(name)
92 /* common attributes */
93 IEEE80211_IF_FILE(drop_unencrypted
, drop_unencrypted
, DEC
);
94 IEEE80211_IF_FILE(force_unicast_rateidx
, force_unicast_rateidx
, DEC
);
95 IEEE80211_IF_FILE(max_ratectrl_rateidx
, max_ratectrl_rateidx
, DEC
);
98 IEEE80211_IF_FILE(state
, u
.mgd
.state
, DEC
);
99 IEEE80211_IF_FILE(bssid
, u
.mgd
.bssid
, MAC
);
100 IEEE80211_IF_FILE(prev_bssid
, u
.mgd
.prev_bssid
, MAC
);
101 IEEE80211_IF_FILE(ssid_len
, u
.mgd
.ssid_len
, SIZE
);
102 IEEE80211_IF_FILE(aid
, u
.mgd
.aid
, DEC
);
103 IEEE80211_IF_FILE(ap_capab
, u
.mgd
.ap_capab
, HEX
);
104 IEEE80211_IF_FILE(capab
, u
.mgd
.capab
, HEX
);
105 IEEE80211_IF_FILE(extra_ie_len
, u
.mgd
.extra_ie_len
, SIZE
);
106 IEEE80211_IF_FILE(auth_tries
, u
.mgd
.auth_tries
, DEC
);
107 IEEE80211_IF_FILE(assoc_tries
, u
.mgd
.assoc_tries
, DEC
);
108 IEEE80211_IF_FILE(auth_alg
, u
.mgd
.auth_alg
, DEC
);
109 IEEE80211_IF_FILE(auth_transaction
, u
.mgd
.auth_transaction
, DEC
);
111 static ssize_t
ieee80211_if_fmt_flags(
112 const struct ieee80211_sub_if_data
*sdata
, char *buf
, int buflen
)
114 return scnprintf(buf
, buflen
, "%s%s%s%s%s\n",
115 sdata
->u
.mgd
.flags
& IEEE80211_STA_PREV_BSSID_SET
? "prev BSSID\n" : "",
116 sdata
->u
.mgd
.flags
& IEEE80211_STA_AUTHENTICATED
? "AUTH\n" : "",
117 sdata
->u
.mgd
.flags
& IEEE80211_STA_ASSOCIATED
? "ASSOC\n" : "",
118 sdata
->u
.mgd
.flags
& IEEE80211_STA_PROBEREQ_POLL
? "PROBEREQ POLL\n" : "",
119 sdata
->vif
.bss_conf
.use_cts_prot
? "CTS prot\n" : "");
121 __IEEE80211_IF_FILE(flags
);
124 IEEE80211_IF_FILE(num_sta_ps
, u
.ap
.num_sta_ps
, ATOMIC
);
125 IEEE80211_IF_FILE(dtim_count
, u
.ap
.dtim_count
, DEC
);
127 static ssize_t
ieee80211_if_fmt_num_buffered_multicast(
128 const struct ieee80211_sub_if_data
*sdata
, char *buf
, int buflen
)
130 return scnprintf(buf
, buflen
, "%u\n",
131 skb_queue_len(&sdata
->u
.ap
.ps_bc_buf
));
133 __IEEE80211_IF_FILE(num_buffered_multicast
);
136 IEEE80211_IF_FILE(peer
, u
.wds
.remote_addr
, MAC
);
138 #ifdef CONFIG_MAC80211_MESH
139 /* Mesh stats attributes */
140 IEEE80211_IF_FILE(fwded_frames
, u
.mesh
.mshstats
.fwded_frames
, DEC
);
141 IEEE80211_IF_FILE(dropped_frames_ttl
, u
.mesh
.mshstats
.dropped_frames_ttl
, DEC
);
142 IEEE80211_IF_FILE(dropped_frames_no_route
,
143 u
.mesh
.mshstats
.dropped_frames_no_route
, DEC
);
144 IEEE80211_IF_FILE(estab_plinks
, u
.mesh
.mshstats
.estab_plinks
, ATOMIC
);
146 /* Mesh parameters */
147 IEEE80211_IF_FILE(dot11MeshMaxRetries
,
148 u
.mesh
.mshcfg
.dot11MeshMaxRetries
, DEC
);
149 IEEE80211_IF_FILE(dot11MeshRetryTimeout
,
150 u
.mesh
.mshcfg
.dot11MeshRetryTimeout
, DEC
);
151 IEEE80211_IF_FILE(dot11MeshConfirmTimeout
,
152 u
.mesh
.mshcfg
.dot11MeshConfirmTimeout
, DEC
);
153 IEEE80211_IF_FILE(dot11MeshHoldingTimeout
,
154 u
.mesh
.mshcfg
.dot11MeshHoldingTimeout
, DEC
);
155 IEEE80211_IF_FILE(dot11MeshTTL
, u
.mesh
.mshcfg
.dot11MeshTTL
, DEC
);
156 IEEE80211_IF_FILE(auto_open_plinks
, u
.mesh
.mshcfg
.auto_open_plinks
, DEC
);
157 IEEE80211_IF_FILE(dot11MeshMaxPeerLinks
,
158 u
.mesh
.mshcfg
.dot11MeshMaxPeerLinks
, DEC
);
159 IEEE80211_IF_FILE(dot11MeshHWMPactivePathTimeout
,
160 u
.mesh
.mshcfg
.dot11MeshHWMPactivePathTimeout
, DEC
);
161 IEEE80211_IF_FILE(dot11MeshHWMPpreqMinInterval
,
162 u
.mesh
.mshcfg
.dot11MeshHWMPpreqMinInterval
, DEC
);
163 IEEE80211_IF_FILE(dot11MeshHWMPnetDiameterTraversalTime
,
164 u
.mesh
.mshcfg
.dot11MeshHWMPnetDiameterTraversalTime
, DEC
);
165 IEEE80211_IF_FILE(dot11MeshHWMPmaxPREQretries
,
166 u
.mesh
.mshcfg
.dot11MeshHWMPmaxPREQretries
, DEC
);
167 IEEE80211_IF_FILE(path_refresh_time
,
168 u
.mesh
.mshcfg
.path_refresh_time
, DEC
);
169 IEEE80211_IF_FILE(min_discovery_timeout
,
170 u
.mesh
.mshcfg
.min_discovery_timeout
, DEC
);
174 #define DEBUGFS_ADD(name, type)\
175 sdata->debugfs.type.name = debugfs_create_file(#name, 0400,\
176 sdata->debugfsdir, sdata, &name##_ops);
178 static void add_sta_files(struct ieee80211_sub_if_data
*sdata
)
180 DEBUGFS_ADD(drop_unencrypted
, sta
);
181 DEBUGFS_ADD(force_unicast_rateidx
, sta
);
182 DEBUGFS_ADD(max_ratectrl_rateidx
, sta
);
184 DEBUGFS_ADD(state
, sta
);
185 DEBUGFS_ADD(bssid
, sta
);
186 DEBUGFS_ADD(prev_bssid
, sta
);
187 DEBUGFS_ADD(ssid_len
, sta
);
188 DEBUGFS_ADD(aid
, sta
);
189 DEBUGFS_ADD(ap_capab
, sta
);
190 DEBUGFS_ADD(capab
, sta
);
191 DEBUGFS_ADD(extra_ie_len
, sta
);
192 DEBUGFS_ADD(auth_tries
, sta
);
193 DEBUGFS_ADD(assoc_tries
, sta
);
194 DEBUGFS_ADD(auth_alg
, sta
);
195 DEBUGFS_ADD(auth_transaction
, sta
);
196 DEBUGFS_ADD(flags
, sta
);
199 static void add_ap_files(struct ieee80211_sub_if_data
*sdata
)
201 DEBUGFS_ADD(drop_unencrypted
, ap
);
202 DEBUGFS_ADD(force_unicast_rateidx
, ap
);
203 DEBUGFS_ADD(max_ratectrl_rateidx
, ap
);
205 DEBUGFS_ADD(num_sta_ps
, ap
);
206 DEBUGFS_ADD(dtim_count
, ap
);
207 DEBUGFS_ADD(num_buffered_multicast
, ap
);
210 static void add_wds_files(struct ieee80211_sub_if_data
*sdata
)
212 DEBUGFS_ADD(drop_unencrypted
, wds
);
213 DEBUGFS_ADD(force_unicast_rateidx
, wds
);
214 DEBUGFS_ADD(max_ratectrl_rateidx
, wds
);
216 DEBUGFS_ADD(peer
, wds
);
219 static void add_vlan_files(struct ieee80211_sub_if_data
*sdata
)
221 DEBUGFS_ADD(drop_unencrypted
, vlan
);
222 DEBUGFS_ADD(force_unicast_rateidx
, vlan
);
223 DEBUGFS_ADD(max_ratectrl_rateidx
, vlan
);
226 static void add_monitor_files(struct ieee80211_sub_if_data
*sdata
)
230 #ifdef CONFIG_MAC80211_MESH
231 #define MESHSTATS_ADD(name)\
232 sdata->mesh_stats.name = debugfs_create_file(#name, 0400,\
233 sdata->mesh_stats_dir, sdata, &name##_ops);
235 static void add_mesh_stats(struct ieee80211_sub_if_data
*sdata
)
237 sdata
->mesh_stats_dir
= debugfs_create_dir("mesh_stats",
239 MESHSTATS_ADD(fwded_frames
);
240 MESHSTATS_ADD(dropped_frames_ttl
);
241 MESHSTATS_ADD(dropped_frames_no_route
);
242 MESHSTATS_ADD(estab_plinks
);
245 #define MESHPARAMS_ADD(name)\
246 sdata->mesh_config.name = debugfs_create_file(#name, 0600,\
247 sdata->mesh_config_dir, sdata, &name##_ops);
249 static void add_mesh_config(struct ieee80211_sub_if_data
*sdata
)
251 sdata
->mesh_config_dir
= debugfs_create_dir("mesh_config",
253 MESHPARAMS_ADD(dot11MeshMaxRetries
);
254 MESHPARAMS_ADD(dot11MeshRetryTimeout
);
255 MESHPARAMS_ADD(dot11MeshConfirmTimeout
);
256 MESHPARAMS_ADD(dot11MeshHoldingTimeout
);
257 MESHPARAMS_ADD(dot11MeshTTL
);
258 MESHPARAMS_ADD(auto_open_plinks
);
259 MESHPARAMS_ADD(dot11MeshMaxPeerLinks
);
260 MESHPARAMS_ADD(dot11MeshHWMPactivePathTimeout
);
261 MESHPARAMS_ADD(dot11MeshHWMPpreqMinInterval
);
262 MESHPARAMS_ADD(dot11MeshHWMPnetDiameterTraversalTime
);
263 MESHPARAMS_ADD(dot11MeshHWMPmaxPREQretries
);
264 MESHPARAMS_ADD(path_refresh_time
);
265 MESHPARAMS_ADD(min_discovery_timeout
);
269 static void add_files(struct ieee80211_sub_if_data
*sdata
)
271 if (!sdata
->debugfsdir
)
274 switch (sdata
->vif
.type
) {
275 case NL80211_IFTYPE_MESH_POINT
:
276 #ifdef CONFIG_MAC80211_MESH
277 add_mesh_stats(sdata
);
278 add_mesh_config(sdata
);
281 case NL80211_IFTYPE_STATION
:
282 add_sta_files(sdata
);
284 case NL80211_IFTYPE_ADHOC
:
287 case NL80211_IFTYPE_AP
:
290 case NL80211_IFTYPE_WDS
:
291 add_wds_files(sdata
);
293 case NL80211_IFTYPE_MONITOR
:
294 add_monitor_files(sdata
);
296 case NL80211_IFTYPE_AP_VLAN
:
297 add_vlan_files(sdata
);
304 #define DEBUGFS_DEL(name, type) \
306 debugfs_remove(sdata->debugfs.type.name); \
307 sdata->debugfs.type.name = NULL; \
310 static void del_sta_files(struct ieee80211_sub_if_data
*sdata
)
312 DEBUGFS_DEL(drop_unencrypted
, sta
);
313 DEBUGFS_DEL(force_unicast_rateidx
, sta
);
314 DEBUGFS_DEL(max_ratectrl_rateidx
, sta
);
316 DEBUGFS_DEL(state
, sta
);
317 DEBUGFS_DEL(bssid
, sta
);
318 DEBUGFS_DEL(prev_bssid
, sta
);
319 DEBUGFS_DEL(ssid_len
, sta
);
320 DEBUGFS_DEL(aid
, sta
);
321 DEBUGFS_DEL(ap_capab
, sta
);
322 DEBUGFS_DEL(capab
, sta
);
323 DEBUGFS_DEL(extra_ie_len
, sta
);
324 DEBUGFS_DEL(auth_tries
, sta
);
325 DEBUGFS_DEL(assoc_tries
, sta
);
326 DEBUGFS_DEL(auth_alg
, sta
);
327 DEBUGFS_DEL(auth_transaction
, sta
);
328 DEBUGFS_DEL(flags
, sta
);
331 static void del_ap_files(struct ieee80211_sub_if_data
*sdata
)
333 DEBUGFS_DEL(drop_unencrypted
, ap
);
334 DEBUGFS_DEL(force_unicast_rateidx
, ap
);
335 DEBUGFS_DEL(max_ratectrl_rateidx
, ap
);
337 DEBUGFS_DEL(num_sta_ps
, ap
);
338 DEBUGFS_DEL(dtim_count
, ap
);
339 DEBUGFS_DEL(num_buffered_multicast
, ap
);
342 static void del_wds_files(struct ieee80211_sub_if_data
*sdata
)
344 DEBUGFS_DEL(drop_unencrypted
, wds
);
345 DEBUGFS_DEL(force_unicast_rateidx
, wds
);
346 DEBUGFS_DEL(max_ratectrl_rateidx
, wds
);
348 DEBUGFS_DEL(peer
, wds
);
351 static void del_vlan_files(struct ieee80211_sub_if_data
*sdata
)
353 DEBUGFS_DEL(drop_unencrypted
, vlan
);
354 DEBUGFS_DEL(force_unicast_rateidx
, vlan
);
355 DEBUGFS_DEL(max_ratectrl_rateidx
, vlan
);
358 static void del_monitor_files(struct ieee80211_sub_if_data
*sdata
)
362 #ifdef CONFIG_MAC80211_MESH
363 #define MESHSTATS_DEL(name) \
365 debugfs_remove(sdata->mesh_stats.name); \
366 sdata->mesh_stats.name = NULL; \
369 static void del_mesh_stats(struct ieee80211_sub_if_data
*sdata
)
371 MESHSTATS_DEL(fwded_frames
);
372 MESHSTATS_DEL(dropped_frames_ttl
);
373 MESHSTATS_DEL(dropped_frames_no_route
);
374 MESHSTATS_DEL(estab_plinks
);
375 debugfs_remove(sdata
->mesh_stats_dir
);
376 sdata
->mesh_stats_dir
= NULL
;
379 #define MESHPARAMS_DEL(name) \
381 debugfs_remove(sdata->mesh_config.name); \
382 sdata->mesh_config.name = NULL; \
385 static void del_mesh_config(struct ieee80211_sub_if_data
*sdata
)
387 MESHPARAMS_DEL(dot11MeshMaxRetries
);
388 MESHPARAMS_DEL(dot11MeshRetryTimeout
);
389 MESHPARAMS_DEL(dot11MeshConfirmTimeout
);
390 MESHPARAMS_DEL(dot11MeshHoldingTimeout
);
391 MESHPARAMS_DEL(dot11MeshTTL
);
392 MESHPARAMS_DEL(auto_open_plinks
);
393 MESHPARAMS_DEL(dot11MeshMaxPeerLinks
);
394 MESHPARAMS_DEL(dot11MeshHWMPactivePathTimeout
);
395 MESHPARAMS_DEL(dot11MeshHWMPpreqMinInterval
);
396 MESHPARAMS_DEL(dot11MeshHWMPnetDiameterTraversalTime
);
397 MESHPARAMS_DEL(dot11MeshHWMPmaxPREQretries
);
398 MESHPARAMS_DEL(path_refresh_time
);
399 MESHPARAMS_DEL(min_discovery_timeout
);
400 debugfs_remove(sdata
->mesh_config_dir
);
401 sdata
->mesh_config_dir
= NULL
;
405 static void del_files(struct ieee80211_sub_if_data
*sdata
)
407 if (!sdata
->debugfsdir
)
410 switch (sdata
->vif
.type
) {
411 case NL80211_IFTYPE_MESH_POINT
:
412 #ifdef CONFIG_MAC80211_MESH
413 del_mesh_stats(sdata
);
414 del_mesh_config(sdata
);
417 case NL80211_IFTYPE_STATION
:
418 del_sta_files(sdata
);
420 case NL80211_IFTYPE_ADHOC
:
423 case NL80211_IFTYPE_AP
:
426 case NL80211_IFTYPE_WDS
:
427 del_wds_files(sdata
);
429 case NL80211_IFTYPE_MONITOR
:
430 del_monitor_files(sdata
);
432 case NL80211_IFTYPE_AP_VLAN
:
433 del_vlan_files(sdata
);
440 static int notif_registered
;
442 void ieee80211_debugfs_add_netdev(struct ieee80211_sub_if_data
*sdata
)
444 char buf
[10+IFNAMSIZ
];
446 if (!notif_registered
)
449 sprintf(buf
, "netdev:%s", sdata
->dev
->name
);
450 sdata
->debugfsdir
= debugfs_create_dir(buf
,
451 sdata
->local
->hw
.wiphy
->debugfsdir
);
455 void ieee80211_debugfs_remove_netdev(struct ieee80211_sub_if_data
*sdata
)
458 debugfs_remove(sdata
->debugfsdir
);
459 sdata
->debugfsdir
= NULL
;
462 static int netdev_notify(struct notifier_block
*nb
,
466 struct net_device
*dev
= ndev
;
468 struct ieee80211_sub_if_data
*sdata
;
469 char buf
[10+IFNAMSIZ
];
471 if (state
!= NETDEV_CHANGENAME
)
474 if (!dev
->ieee80211_ptr
|| !dev
->ieee80211_ptr
->wiphy
)
477 if (dev
->ieee80211_ptr
->wiphy
->privid
!= mac80211_wiphy_privid
)
480 sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
482 dir
= sdata
->debugfsdir
;
487 sprintf(buf
, "netdev:%s", dev
->name
);
488 if (!debugfs_rename(dir
->d_parent
, dir
, dir
->d_parent
, buf
))
489 printk(KERN_ERR
"mac80211: debugfs: failed to rename debugfs "
495 static struct notifier_block mac80211_debugfs_netdev_notifier
= {
496 .notifier_call
= netdev_notify
,
499 void ieee80211_debugfs_netdev_init(void)
503 err
= register_netdevice_notifier(&mac80211_debugfs_netdev_notifier
);
506 "mac80211: failed to install netdev notifier,"
507 " disabling per-netdev debugfs!\n");
509 notif_registered
= 1;
512 void ieee80211_debugfs_netdev_exit(void)
514 unregister_netdevice_notifier(&mac80211_debugfs_netdev_notifier
);
515 notif_registered
= 0;