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 static ssize_t
ieee80211_if_write(
45 struct ieee80211_sub_if_data
*sdata
,
46 const char __user
*userbuf
,
47 size_t count
, loff_t
*ppos
,
48 ssize_t (*write
)(struct ieee80211_sub_if_data
*, const char *, int))
53 buf
= kmalloc(count
, GFP_KERNEL
);
58 if (copy_from_user(buf
, userbuf
, count
))
63 if (sdata
->dev
->reg_state
== NETREG_REGISTERED
)
64 ret
= (*write
)(sdata
, buf
, count
);
72 #define IEEE80211_IF_FMT(name, field, format_string) \
73 static ssize_t ieee80211_if_fmt_##name( \
74 const struct ieee80211_sub_if_data *sdata, char *buf, \
77 return scnprintf(buf, buflen, format_string, sdata->field); \
79 #define IEEE80211_IF_FMT_DEC(name, field) \
80 IEEE80211_IF_FMT(name, field, "%d\n")
81 #define IEEE80211_IF_FMT_HEX(name, field) \
82 IEEE80211_IF_FMT(name, field, "%#x\n")
83 #define IEEE80211_IF_FMT_SIZE(name, field) \
84 IEEE80211_IF_FMT(name, field, "%zd\n")
86 #define IEEE80211_IF_FMT_ATOMIC(name, field) \
87 static ssize_t ieee80211_if_fmt_##name( \
88 const struct ieee80211_sub_if_data *sdata, \
89 char *buf, int buflen) \
91 return scnprintf(buf, buflen, "%d\n", atomic_read(&sdata->field));\
94 #define IEEE80211_IF_FMT_MAC(name, field) \
95 static ssize_t ieee80211_if_fmt_##name( \
96 const struct ieee80211_sub_if_data *sdata, char *buf, \
99 return scnprintf(buf, buflen, "%pM\n", sdata->field); \
102 #define __IEEE80211_IF_FILE(name, _write) \
103 static ssize_t ieee80211_if_read_##name(struct file *file, \
104 char __user *userbuf, \
105 size_t count, loff_t *ppos) \
107 return ieee80211_if_read(file->private_data, \
108 userbuf, count, ppos, \
109 ieee80211_if_fmt_##name); \
111 static const struct file_operations name##_ops = { \
112 .read = ieee80211_if_read_##name, \
114 .open = mac80211_open_file_generic, \
117 #define __IEEE80211_IF_FILE_W(name) \
118 static ssize_t ieee80211_if_write_##name(struct file *file, \
119 const char __user *userbuf, \
120 size_t count, loff_t *ppos) \
122 return ieee80211_if_write(file->private_data, userbuf, count, \
123 ppos, ieee80211_if_parse_##name); \
125 __IEEE80211_IF_FILE(name, ieee80211_if_write_##name)
128 #define IEEE80211_IF_FILE(name, field, format) \
129 IEEE80211_IF_FMT_##format(name, field) \
130 __IEEE80211_IF_FILE(name, NULL)
132 /* common attributes */
133 IEEE80211_IF_FILE(drop_unencrypted
, drop_unencrypted
, DEC
);
134 IEEE80211_IF_FILE(rc_rateidx_mask_2ghz
, rc_rateidx_mask
[IEEE80211_BAND_2GHZ
],
136 IEEE80211_IF_FILE(rc_rateidx_mask_5ghz
, rc_rateidx_mask
[IEEE80211_BAND_5GHZ
],
140 IEEE80211_IF_FILE(bssid
, u
.mgd
.bssid
, MAC
);
141 IEEE80211_IF_FILE(aid
, u
.mgd
.aid
, DEC
);
143 static int ieee80211_set_smps(struct ieee80211_sub_if_data
*sdata
,
144 enum ieee80211_smps_mode smps_mode
)
146 struct ieee80211_local
*local
= sdata
->local
;
149 if (!(local
->hw
.flags
& IEEE80211_HW_SUPPORTS_STATIC_SMPS
) &&
150 smps_mode
== IEEE80211_SMPS_STATIC
)
153 /* auto should be dynamic if in PS mode */
154 if (!(local
->hw
.flags
& IEEE80211_HW_SUPPORTS_DYNAMIC_SMPS
) &&
155 (smps_mode
== IEEE80211_SMPS_DYNAMIC
||
156 smps_mode
== IEEE80211_SMPS_AUTOMATIC
))
159 /* supported only on managed interfaces for now */
160 if (sdata
->vif
.type
!= NL80211_IFTYPE_STATION
)
163 mutex_lock(&local
->iflist_mtx
);
164 err
= __ieee80211_request_smps(sdata
, smps_mode
);
165 mutex_unlock(&local
->iflist_mtx
);
170 static const char *smps_modes
[IEEE80211_SMPS_NUM_MODES
] = {
171 [IEEE80211_SMPS_AUTOMATIC
] = "auto",
172 [IEEE80211_SMPS_OFF
] = "off",
173 [IEEE80211_SMPS_STATIC
] = "static",
174 [IEEE80211_SMPS_DYNAMIC
] = "dynamic",
177 static ssize_t
ieee80211_if_fmt_smps(const struct ieee80211_sub_if_data
*sdata
,
178 char *buf
, int buflen
)
180 if (sdata
->vif
.type
!= NL80211_IFTYPE_STATION
)
183 return snprintf(buf
, buflen
, "request: %s\nused: %s\n",
184 smps_modes
[sdata
->u
.mgd
.req_smps
],
185 smps_modes
[sdata
->u
.mgd
.ap_smps
]);
188 static ssize_t
ieee80211_if_parse_smps(struct ieee80211_sub_if_data
*sdata
,
189 const char *buf
, int buflen
)
191 enum ieee80211_smps_mode mode
;
193 for (mode
= 0; mode
< IEEE80211_SMPS_NUM_MODES
; mode
++) {
194 if (strncmp(buf
, smps_modes
[mode
], buflen
) == 0) {
195 int err
= ieee80211_set_smps(sdata
, mode
);
205 __IEEE80211_IF_FILE_W(smps
);
208 IEEE80211_IF_FILE(num_sta_ps
, u
.ap
.num_sta_ps
, ATOMIC
);
209 IEEE80211_IF_FILE(dtim_count
, u
.ap
.dtim_count
, DEC
);
211 static ssize_t
ieee80211_if_fmt_num_buffered_multicast(
212 const struct ieee80211_sub_if_data
*sdata
, char *buf
, int buflen
)
214 return scnprintf(buf
, buflen
, "%u\n",
215 skb_queue_len(&sdata
->u
.ap
.ps_bc_buf
));
217 __IEEE80211_IF_FILE(num_buffered_multicast
, NULL
);
220 IEEE80211_IF_FILE(peer
, u
.wds
.remote_addr
, MAC
);
222 #ifdef CONFIG_MAC80211_MESH
223 /* Mesh stats attributes */
224 IEEE80211_IF_FILE(fwded_mcast
, u
.mesh
.mshstats
.fwded_mcast
, DEC
);
225 IEEE80211_IF_FILE(fwded_unicast
, u
.mesh
.mshstats
.fwded_unicast
, DEC
);
226 IEEE80211_IF_FILE(fwded_frames
, u
.mesh
.mshstats
.fwded_frames
, DEC
);
227 IEEE80211_IF_FILE(dropped_frames_ttl
, u
.mesh
.mshstats
.dropped_frames_ttl
, DEC
);
228 IEEE80211_IF_FILE(dropped_frames_no_route
,
229 u
.mesh
.mshstats
.dropped_frames_no_route
, DEC
);
230 IEEE80211_IF_FILE(estab_plinks
, u
.mesh
.mshstats
.estab_plinks
, ATOMIC
);
232 /* Mesh parameters */
233 IEEE80211_IF_FILE(dot11MeshMaxRetries
,
234 u
.mesh
.mshcfg
.dot11MeshMaxRetries
, DEC
);
235 IEEE80211_IF_FILE(dot11MeshRetryTimeout
,
236 u
.mesh
.mshcfg
.dot11MeshRetryTimeout
, DEC
);
237 IEEE80211_IF_FILE(dot11MeshConfirmTimeout
,
238 u
.mesh
.mshcfg
.dot11MeshConfirmTimeout
, DEC
);
239 IEEE80211_IF_FILE(dot11MeshHoldingTimeout
,
240 u
.mesh
.mshcfg
.dot11MeshHoldingTimeout
, DEC
);
241 IEEE80211_IF_FILE(dot11MeshTTL
, u
.mesh
.mshcfg
.dot11MeshTTL
, DEC
);
242 IEEE80211_IF_FILE(auto_open_plinks
, u
.mesh
.mshcfg
.auto_open_plinks
, DEC
);
243 IEEE80211_IF_FILE(dot11MeshMaxPeerLinks
,
244 u
.mesh
.mshcfg
.dot11MeshMaxPeerLinks
, DEC
);
245 IEEE80211_IF_FILE(dot11MeshHWMPactivePathTimeout
,
246 u
.mesh
.mshcfg
.dot11MeshHWMPactivePathTimeout
, DEC
);
247 IEEE80211_IF_FILE(dot11MeshHWMPpreqMinInterval
,
248 u
.mesh
.mshcfg
.dot11MeshHWMPpreqMinInterval
, DEC
);
249 IEEE80211_IF_FILE(dot11MeshHWMPnetDiameterTraversalTime
,
250 u
.mesh
.mshcfg
.dot11MeshHWMPnetDiameterTraversalTime
, DEC
);
251 IEEE80211_IF_FILE(dot11MeshHWMPmaxPREQretries
,
252 u
.mesh
.mshcfg
.dot11MeshHWMPmaxPREQretries
, DEC
);
253 IEEE80211_IF_FILE(path_refresh_time
,
254 u
.mesh
.mshcfg
.path_refresh_time
, DEC
);
255 IEEE80211_IF_FILE(min_discovery_timeout
,
256 u
.mesh
.mshcfg
.min_discovery_timeout
, DEC
);
257 IEEE80211_IF_FILE(dot11MeshHWMPRootMode
,
258 u
.mesh
.mshcfg
.dot11MeshHWMPRootMode
, DEC
);
262 #define DEBUGFS_ADD(name) \
263 debugfs_create_file(#name, 0400, sdata->debugfs.dir, \
266 #define DEBUGFS_ADD_MODE(name, mode) \
267 debugfs_create_file(#name, mode, sdata->debugfs.dir, \
270 static void add_sta_files(struct ieee80211_sub_if_data
*sdata
)
272 DEBUGFS_ADD(drop_unencrypted
);
273 DEBUGFS_ADD(rc_rateidx_mask_2ghz
);
274 DEBUGFS_ADD(rc_rateidx_mask_5ghz
);
278 DEBUGFS_ADD_MODE(smps
, 0600);
281 static void add_ap_files(struct ieee80211_sub_if_data
*sdata
)
283 DEBUGFS_ADD(drop_unencrypted
);
284 DEBUGFS_ADD(rc_rateidx_mask_2ghz
);
285 DEBUGFS_ADD(rc_rateidx_mask_5ghz
);
287 DEBUGFS_ADD(num_sta_ps
);
288 DEBUGFS_ADD(dtim_count
);
289 DEBUGFS_ADD(num_buffered_multicast
);
292 static void add_wds_files(struct ieee80211_sub_if_data
*sdata
)
294 DEBUGFS_ADD(drop_unencrypted
);
295 DEBUGFS_ADD(rc_rateidx_mask_2ghz
);
296 DEBUGFS_ADD(rc_rateidx_mask_5ghz
);
301 static void add_vlan_files(struct ieee80211_sub_if_data
*sdata
)
303 DEBUGFS_ADD(drop_unencrypted
);
304 DEBUGFS_ADD(rc_rateidx_mask_2ghz
);
305 DEBUGFS_ADD(rc_rateidx_mask_5ghz
);
308 static void add_monitor_files(struct ieee80211_sub_if_data
*sdata
)
312 #ifdef CONFIG_MAC80211_MESH
314 static void add_mesh_stats(struct ieee80211_sub_if_data
*sdata
)
316 struct dentry
*dir
= debugfs_create_dir("mesh_stats",
319 #define MESHSTATS_ADD(name)\
320 debugfs_create_file(#name, 0400, dir, sdata, &name##_ops);
322 MESHSTATS_ADD(fwded_mcast
);
323 MESHSTATS_ADD(fwded_unicast
);
324 MESHSTATS_ADD(fwded_frames
);
325 MESHSTATS_ADD(dropped_frames_ttl
);
326 MESHSTATS_ADD(dropped_frames_no_route
);
327 MESHSTATS_ADD(estab_plinks
);
331 static void add_mesh_config(struct ieee80211_sub_if_data
*sdata
)
333 struct dentry
*dir
= debugfs_create_dir("mesh_config",
336 #define MESHPARAMS_ADD(name) \
337 debugfs_create_file(#name, 0600, dir, sdata, &name##_ops);
339 MESHPARAMS_ADD(dot11MeshMaxRetries
);
340 MESHPARAMS_ADD(dot11MeshRetryTimeout
);
341 MESHPARAMS_ADD(dot11MeshConfirmTimeout
);
342 MESHPARAMS_ADD(dot11MeshHoldingTimeout
);
343 MESHPARAMS_ADD(dot11MeshTTL
);
344 MESHPARAMS_ADD(auto_open_plinks
);
345 MESHPARAMS_ADD(dot11MeshMaxPeerLinks
);
346 MESHPARAMS_ADD(dot11MeshHWMPactivePathTimeout
);
347 MESHPARAMS_ADD(dot11MeshHWMPpreqMinInterval
);
348 MESHPARAMS_ADD(dot11MeshHWMPnetDiameterTraversalTime
);
349 MESHPARAMS_ADD(dot11MeshHWMPmaxPREQretries
);
350 MESHPARAMS_ADD(path_refresh_time
);
351 MESHPARAMS_ADD(min_discovery_timeout
);
353 #undef MESHPARAMS_ADD
357 static void add_files(struct ieee80211_sub_if_data
*sdata
)
359 if (!sdata
->debugfs
.dir
)
362 switch (sdata
->vif
.type
) {
363 case NL80211_IFTYPE_MESH_POINT
:
364 #ifdef CONFIG_MAC80211_MESH
365 add_mesh_stats(sdata
);
366 add_mesh_config(sdata
);
369 case NL80211_IFTYPE_STATION
:
370 add_sta_files(sdata
);
372 case NL80211_IFTYPE_ADHOC
:
375 case NL80211_IFTYPE_AP
:
378 case NL80211_IFTYPE_WDS
:
379 add_wds_files(sdata
);
381 case NL80211_IFTYPE_MONITOR
:
382 add_monitor_files(sdata
);
384 case NL80211_IFTYPE_AP_VLAN
:
385 add_vlan_files(sdata
);
392 void ieee80211_debugfs_add_netdev(struct ieee80211_sub_if_data
*sdata
)
394 char buf
[10+IFNAMSIZ
];
396 sprintf(buf
, "netdev:%s", sdata
->name
);
397 sdata
->debugfs
.dir
= debugfs_create_dir(buf
,
398 sdata
->local
->hw
.wiphy
->debugfsdir
);
402 void ieee80211_debugfs_remove_netdev(struct ieee80211_sub_if_data
*sdata
)
404 if (!sdata
->debugfs
.dir
)
407 debugfs_remove_recursive(sdata
->debugfs
.dir
);
408 sdata
->debugfs
.dir
= NULL
;
411 void ieee80211_debugfs_rename_netdev(struct ieee80211_sub_if_data
*sdata
)
414 char buf
[10 + IFNAMSIZ
];
416 dir
= sdata
->debugfs
.dir
;
421 sprintf(buf
, "netdev:%s", sdata
->name
);
422 if (!debugfs_rename(dir
->d_parent
, dir
, dir
->d_parent
, buf
))
423 printk(KERN_ERR
"mac80211: debugfs: failed to rename debugfs "