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e9f207f0 JB |
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" | |
2c8dccc7 | 20 | #include "rate.h" |
e9f207f0 JB |
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); | |
73bb3e4a | 34 | if (sdata->dev->reg_state == NETREG_REGISTERED) |
e9f207f0 | 35 | ret = (*format)(sdata, buf, sizeof(buf)); |
e9f207f0 | 36 | read_unlock(&dev_base_lock); |
73bb3e4a LCC |
37 | |
38 | if (ret != -EINVAL) | |
39 | ret = simple_read_from_buffer(userbuf, count, ppos, buf, ret); | |
40 | ||
e9f207f0 JB |
41 | return ret; |
42 | } | |
43 | ||
0f78231b JB |
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)) | |
49 | { | |
50 | u8 *buf; | |
51 | ssize_t ret = -ENODEV; | |
52 | ||
53 | buf = kzalloc(count, GFP_KERNEL); | |
54 | if (!buf) | |
55 | return -ENOMEM; | |
56 | ||
57 | if (copy_from_user(buf, userbuf, count)) | |
58 | return -EFAULT; | |
59 | ||
60 | rtnl_lock(); | |
61 | if (sdata->dev->reg_state == NETREG_REGISTERED) | |
62 | ret = (*write)(sdata, buf, count); | |
63 | rtnl_unlock(); | |
64 | ||
65 | return ret; | |
66 | } | |
67 | ||
e9f207f0 JB |
68 | #define IEEE80211_IF_FMT(name, field, format_string) \ |
69 | static ssize_t ieee80211_if_fmt_##name( \ | |
70 | const struct ieee80211_sub_if_data *sdata, char *buf, \ | |
71 | int buflen) \ | |
72 | { \ | |
73 | return scnprintf(buf, buflen, format_string, sdata->field); \ | |
74 | } | |
75 | #define IEEE80211_IF_FMT_DEC(name, field) \ | |
76 | IEEE80211_IF_FMT(name, field, "%d\n") | |
77 | #define IEEE80211_IF_FMT_HEX(name, field) \ | |
78 | IEEE80211_IF_FMT(name, field, "%#x\n") | |
79 | #define IEEE80211_IF_FMT_SIZE(name, field) \ | |
80 | IEEE80211_IF_FMT(name, field, "%zd\n") | |
81 | ||
82 | #define IEEE80211_IF_FMT_ATOMIC(name, field) \ | |
83 | static ssize_t ieee80211_if_fmt_##name( \ | |
84 | const struct ieee80211_sub_if_data *sdata, \ | |
85 | char *buf, int buflen) \ | |
86 | { \ | |
87 | return scnprintf(buf, buflen, "%d\n", atomic_read(&sdata->field));\ | |
88 | } | |
89 | ||
90 | #define IEEE80211_IF_FMT_MAC(name, field) \ | |
91 | static ssize_t ieee80211_if_fmt_##name( \ | |
92 | const struct ieee80211_sub_if_data *sdata, char *buf, \ | |
93 | int buflen) \ | |
94 | { \ | |
0c68ae26 | 95 | return scnprintf(buf, buflen, "%pM\n", sdata->field); \ |
e9f207f0 JB |
96 | } |
97 | ||
0f78231b | 98 | #define __IEEE80211_IF_FILE(name, _write) \ |
e9f207f0 JB |
99 | static ssize_t ieee80211_if_read_##name(struct file *file, \ |
100 | char __user *userbuf, \ | |
101 | size_t count, loff_t *ppos) \ | |
102 | { \ | |
103 | return ieee80211_if_read(file->private_data, \ | |
104 | userbuf, count, ppos, \ | |
105 | ieee80211_if_fmt_##name); \ | |
106 | } \ | |
107 | static const struct file_operations name##_ops = { \ | |
108 | .read = ieee80211_if_read_##name, \ | |
0f78231b | 109 | .write = (_write), \ |
e9f207f0 JB |
110 | .open = mac80211_open_file_generic, \ |
111 | } | |
112 | ||
0f78231b JB |
113 | #define __IEEE80211_IF_FILE_W(name) \ |
114 | static ssize_t ieee80211_if_write_##name(struct file *file, \ | |
115 | const char __user *userbuf, \ | |
116 | size_t count, loff_t *ppos) \ | |
117 | { \ | |
118 | return ieee80211_if_write(file->private_data, userbuf, count, \ | |
119 | ppos, ieee80211_if_parse_##name); \ | |
120 | } \ | |
121 | __IEEE80211_IF_FILE(name, ieee80211_if_write_##name) | |
122 | ||
123 | ||
e9f207f0 JB |
124 | #define IEEE80211_IF_FILE(name, field, format) \ |
125 | IEEE80211_IF_FMT_##format(name, field) \ | |
0f78231b | 126 | __IEEE80211_IF_FILE(name, NULL) |
e9f207f0 JB |
127 | |
128 | /* common attributes */ | |
e9f207f0 | 129 | IEEE80211_IF_FILE(drop_unencrypted, drop_unencrypted, DEC); |
3e122be0 JB |
130 | IEEE80211_IF_FILE(force_unicast_rateidx, force_unicast_rateidx, DEC); |
131 | IEEE80211_IF_FILE(max_ratectrl_rateidx, max_ratectrl_rateidx, DEC); | |
e9f207f0 | 132 | |
46900298 | 133 | /* STA attributes */ |
46900298 | 134 | IEEE80211_IF_FILE(bssid, u.mgd.bssid, MAC); |
46900298 | 135 | IEEE80211_IF_FILE(aid, u.mgd.aid, DEC); |
e9f207f0 | 136 | |
0f78231b JB |
137 | static int ieee80211_set_smps(struct ieee80211_sub_if_data *sdata, |
138 | enum ieee80211_smps_mode smps_mode) | |
139 | { | |
140 | struct ieee80211_local *local = sdata->local; | |
141 | int err; | |
142 | ||
143 | if (!(local->hw.flags & IEEE80211_HW_SUPPORTS_STATIC_SMPS) && | |
144 | smps_mode == IEEE80211_SMPS_STATIC) | |
145 | return -EINVAL; | |
146 | ||
147 | /* auto should be dynamic if in PS mode */ | |
148 | if (!(local->hw.flags & IEEE80211_HW_SUPPORTS_DYNAMIC_SMPS) && | |
149 | (smps_mode == IEEE80211_SMPS_DYNAMIC || | |
150 | smps_mode == IEEE80211_SMPS_AUTOMATIC)) | |
151 | return -EINVAL; | |
152 | ||
153 | /* supported only on managed interfaces for now */ | |
154 | if (sdata->vif.type != NL80211_IFTYPE_STATION) | |
155 | return -EOPNOTSUPP; | |
156 | ||
157 | mutex_lock(&local->iflist_mtx); | |
158 | err = __ieee80211_request_smps(sdata, smps_mode); | |
159 | mutex_unlock(&local->iflist_mtx); | |
160 | ||
161 | return err; | |
162 | } | |
163 | ||
164 | static const char *smps_modes[IEEE80211_SMPS_NUM_MODES] = { | |
165 | [IEEE80211_SMPS_AUTOMATIC] = "auto", | |
166 | [IEEE80211_SMPS_OFF] = "off", | |
167 | [IEEE80211_SMPS_STATIC] = "static", | |
168 | [IEEE80211_SMPS_DYNAMIC] = "dynamic", | |
169 | }; | |
170 | ||
171 | static ssize_t ieee80211_if_fmt_smps(const struct ieee80211_sub_if_data *sdata, | |
172 | char *buf, int buflen) | |
173 | { | |
174 | if (sdata->vif.type != NL80211_IFTYPE_STATION) | |
175 | return -EOPNOTSUPP; | |
176 | ||
177 | return snprintf(buf, buflen, "request: %s\nused: %s\n", | |
178 | smps_modes[sdata->u.mgd.req_smps], | |
179 | smps_modes[sdata->u.mgd.ap_smps]); | |
180 | } | |
181 | ||
182 | static ssize_t ieee80211_if_parse_smps(struct ieee80211_sub_if_data *sdata, | |
183 | const char *buf, int buflen) | |
184 | { | |
185 | enum ieee80211_smps_mode mode; | |
186 | ||
187 | for (mode = 0; mode < IEEE80211_SMPS_NUM_MODES; mode++) { | |
188 | if (strncmp(buf, smps_modes[mode], buflen) == 0) { | |
189 | int err = ieee80211_set_smps(sdata, mode); | |
190 | if (!err) | |
191 | return buflen; | |
192 | return err; | |
193 | } | |
194 | } | |
195 | ||
196 | return -EINVAL; | |
197 | } | |
198 | ||
199 | __IEEE80211_IF_FILE_W(smps); | |
200 | ||
e9f207f0 JB |
201 | /* AP attributes */ |
202 | IEEE80211_IF_FILE(num_sta_ps, u.ap.num_sta_ps, ATOMIC); | |
e9f207f0 | 203 | IEEE80211_IF_FILE(dtim_count, u.ap.dtim_count, DEC); |
e9f207f0 JB |
204 | |
205 | static ssize_t ieee80211_if_fmt_num_buffered_multicast( | |
206 | const struct ieee80211_sub_if_data *sdata, char *buf, int buflen) | |
207 | { | |
208 | return scnprintf(buf, buflen, "%u\n", | |
209 | skb_queue_len(&sdata->u.ap.ps_bc_buf)); | |
210 | } | |
0f78231b | 211 | __IEEE80211_IF_FILE(num_buffered_multicast, NULL); |
e9f207f0 | 212 | |
e9f207f0 JB |
213 | /* WDS attributes */ |
214 | IEEE80211_IF_FILE(peer, u.wds.remote_addr, MAC); | |
215 | ||
9f42f607 LCC |
216 | #ifdef CONFIG_MAC80211_MESH |
217 | /* Mesh stats attributes */ | |
c8a61a7d DW |
218 | IEEE80211_IF_FILE(fwded_mcast, u.mesh.mshstats.fwded_mcast, DEC); |
219 | IEEE80211_IF_FILE(fwded_unicast, u.mesh.mshstats.fwded_unicast, DEC); | |
472dbc45 JB |
220 | IEEE80211_IF_FILE(fwded_frames, u.mesh.mshstats.fwded_frames, DEC); |
221 | IEEE80211_IF_FILE(dropped_frames_ttl, u.mesh.mshstats.dropped_frames_ttl, DEC); | |
9f42f607 | 222 | IEEE80211_IF_FILE(dropped_frames_no_route, |
472dbc45 JB |
223 | u.mesh.mshstats.dropped_frames_no_route, DEC); |
224 | IEEE80211_IF_FILE(estab_plinks, u.mesh.mshstats.estab_plinks, ATOMIC); | |
9f42f607 LCC |
225 | |
226 | /* Mesh parameters */ | |
36ff382d JB |
227 | IEEE80211_IF_FILE(dot11MeshMaxRetries, |
228 | u.mesh.mshcfg.dot11MeshMaxRetries, DEC); | |
229 | IEEE80211_IF_FILE(dot11MeshRetryTimeout, | |
230 | u.mesh.mshcfg.dot11MeshRetryTimeout, DEC); | |
231 | IEEE80211_IF_FILE(dot11MeshConfirmTimeout, | |
232 | u.mesh.mshcfg.dot11MeshConfirmTimeout, DEC); | |
233 | IEEE80211_IF_FILE(dot11MeshHoldingTimeout, | |
234 | u.mesh.mshcfg.dot11MeshHoldingTimeout, DEC); | |
235 | IEEE80211_IF_FILE(dot11MeshTTL, u.mesh.mshcfg.dot11MeshTTL, DEC); | |
236 | IEEE80211_IF_FILE(auto_open_plinks, u.mesh.mshcfg.auto_open_plinks, DEC); | |
237 | IEEE80211_IF_FILE(dot11MeshMaxPeerLinks, | |
238 | u.mesh.mshcfg.dot11MeshMaxPeerLinks, DEC); | |
239 | IEEE80211_IF_FILE(dot11MeshHWMPactivePathTimeout, | |
240 | u.mesh.mshcfg.dot11MeshHWMPactivePathTimeout, DEC); | |
241 | IEEE80211_IF_FILE(dot11MeshHWMPpreqMinInterval, | |
242 | u.mesh.mshcfg.dot11MeshHWMPpreqMinInterval, DEC); | |
243 | IEEE80211_IF_FILE(dot11MeshHWMPnetDiameterTraversalTime, | |
244 | u.mesh.mshcfg.dot11MeshHWMPnetDiameterTraversalTime, DEC); | |
245 | IEEE80211_IF_FILE(dot11MeshHWMPmaxPREQretries, | |
246 | u.mesh.mshcfg.dot11MeshHWMPmaxPREQretries, DEC); | |
247 | IEEE80211_IF_FILE(path_refresh_time, | |
248 | u.mesh.mshcfg.path_refresh_time, DEC); | |
249 | IEEE80211_IF_FILE(min_discovery_timeout, | |
250 | u.mesh.mshcfg.min_discovery_timeout, DEC); | |
63c5723b RP |
251 | IEEE80211_IF_FILE(dot11MeshHWMPRootMode, |
252 | u.mesh.mshcfg.dot11MeshHWMPRootMode, DEC); | |
9f42f607 LCC |
253 | #endif |
254 | ||
255 | ||
7bcfaf2f JB |
256 | #define DEBUGFS_ADD(name, type) \ |
257 | debugfs_create_file(#name, 0400, sdata->debugfs.dir, \ | |
258 | sdata, &name##_ops); | |
e9f207f0 | 259 | |
0f78231b JB |
260 | #define DEBUGFS_ADD_MODE(name, mode) \ |
261 | debugfs_create_file(#name, mode, sdata->debugfs.dir, \ | |
262 | sdata, &name##_ops); | |
263 | ||
e9f207f0 JB |
264 | static void add_sta_files(struct ieee80211_sub_if_data *sdata) |
265 | { | |
e9f207f0 | 266 | DEBUGFS_ADD(drop_unencrypted, sta); |
93015f0f JM |
267 | DEBUGFS_ADD(force_unicast_rateidx, sta); |
268 | DEBUGFS_ADD(max_ratectrl_rateidx, sta); | |
3e122be0 | 269 | |
e9f207f0 | 270 | DEBUGFS_ADD(bssid, sta); |
e9f207f0 | 271 | DEBUGFS_ADD(aid, sta); |
0f78231b | 272 | DEBUGFS_ADD_MODE(smps, 0600); |
e9f207f0 JB |
273 | } |
274 | ||
275 | static void add_ap_files(struct ieee80211_sub_if_data *sdata) | |
276 | { | |
e9f207f0 | 277 | DEBUGFS_ADD(drop_unencrypted, ap); |
3e122be0 JB |
278 | DEBUGFS_ADD(force_unicast_rateidx, ap); |
279 | DEBUGFS_ADD(max_ratectrl_rateidx, ap); | |
280 | ||
e9f207f0 | 281 | DEBUGFS_ADD(num_sta_ps, ap); |
e9f207f0 | 282 | DEBUGFS_ADD(dtim_count, ap); |
e9f207f0 | 283 | DEBUGFS_ADD(num_buffered_multicast, ap); |
e9f207f0 JB |
284 | } |
285 | ||
286 | static void add_wds_files(struct ieee80211_sub_if_data *sdata) | |
287 | { | |
e9f207f0 | 288 | DEBUGFS_ADD(drop_unencrypted, wds); |
93015f0f JM |
289 | DEBUGFS_ADD(force_unicast_rateidx, wds); |
290 | DEBUGFS_ADD(max_ratectrl_rateidx, wds); | |
3e122be0 | 291 | |
e9f207f0 JB |
292 | DEBUGFS_ADD(peer, wds); |
293 | } | |
294 | ||
295 | static void add_vlan_files(struct ieee80211_sub_if_data *sdata) | |
296 | { | |
e9f207f0 | 297 | DEBUGFS_ADD(drop_unencrypted, vlan); |
93015f0f JM |
298 | DEBUGFS_ADD(force_unicast_rateidx, vlan); |
299 | DEBUGFS_ADD(max_ratectrl_rateidx, vlan); | |
e9f207f0 JB |
300 | } |
301 | ||
302 | static void add_monitor_files(struct ieee80211_sub_if_data *sdata) | |
303 | { | |
e9f207f0 JB |
304 | } |
305 | ||
9f42f607 | 306 | #ifdef CONFIG_MAC80211_MESH |
9f42f607 LCC |
307 | |
308 | static void add_mesh_stats(struct ieee80211_sub_if_data *sdata) | |
309 | { | |
7bcfaf2f JB |
310 | struct dentry *dir = debugfs_create_dir("mesh_stats", |
311 | sdata->debugfs.dir); | |
312 | ||
313 | #define MESHSTATS_ADD(name)\ | |
314 | debugfs_create_file(#name, 0400, dir, sdata, &name##_ops); | |
315 | ||
c8a61a7d DW |
316 | MESHSTATS_ADD(fwded_mcast); |
317 | MESHSTATS_ADD(fwded_unicast); | |
9f42f607 LCC |
318 | MESHSTATS_ADD(fwded_frames); |
319 | MESHSTATS_ADD(dropped_frames_ttl); | |
320 | MESHSTATS_ADD(dropped_frames_no_route); | |
321 | MESHSTATS_ADD(estab_plinks); | |
7bcfaf2f | 322 | #undef MESHSTATS_ADD |
9f42f607 LCC |
323 | } |
324 | ||
9f42f607 LCC |
325 | static void add_mesh_config(struct ieee80211_sub_if_data *sdata) |
326 | { | |
7bcfaf2f JB |
327 | struct dentry *dir = debugfs_create_dir("mesh_config", |
328 | sdata->debugfs.dir); | |
329 | ||
330 | #define MESHPARAMS_ADD(name) \ | |
331 | debugfs_create_file(#name, 0600, dir, sdata, &name##_ops); | |
332 | ||
9f42f607 LCC |
333 | MESHPARAMS_ADD(dot11MeshMaxRetries); |
334 | MESHPARAMS_ADD(dot11MeshRetryTimeout); | |
335 | MESHPARAMS_ADD(dot11MeshConfirmTimeout); | |
336 | MESHPARAMS_ADD(dot11MeshHoldingTimeout); | |
337 | MESHPARAMS_ADD(dot11MeshTTL); | |
338 | MESHPARAMS_ADD(auto_open_plinks); | |
339 | MESHPARAMS_ADD(dot11MeshMaxPeerLinks); | |
340 | MESHPARAMS_ADD(dot11MeshHWMPactivePathTimeout); | |
341 | MESHPARAMS_ADD(dot11MeshHWMPpreqMinInterval); | |
342 | MESHPARAMS_ADD(dot11MeshHWMPnetDiameterTraversalTime); | |
343 | MESHPARAMS_ADD(dot11MeshHWMPmaxPREQretries); | |
344 | MESHPARAMS_ADD(path_refresh_time); | |
345 | MESHPARAMS_ADD(min_discovery_timeout); | |
7bcfaf2f JB |
346 | |
347 | #undef MESHPARAMS_ADD | |
9f42f607 LCC |
348 | } |
349 | #endif | |
350 | ||
e9f207f0 JB |
351 | static void add_files(struct ieee80211_sub_if_data *sdata) |
352 | { | |
7bcfaf2f | 353 | if (!sdata->debugfs.dir) |
e9f207f0 JB |
354 | return; |
355 | ||
51fb61e7 | 356 | switch (sdata->vif.type) { |
05c914fe | 357 | case NL80211_IFTYPE_MESH_POINT: |
9f42f607 LCC |
358 | #ifdef CONFIG_MAC80211_MESH |
359 | add_mesh_stats(sdata); | |
360 | add_mesh_config(sdata); | |
361 | #endif | |
472dbc45 | 362 | break; |
05c914fe | 363 | case NL80211_IFTYPE_STATION: |
e9f207f0 JB |
364 | add_sta_files(sdata); |
365 | break; | |
46900298 JB |
366 | case NL80211_IFTYPE_ADHOC: |
367 | /* XXX */ | |
368 | break; | |
05c914fe | 369 | case NL80211_IFTYPE_AP: |
e9f207f0 JB |
370 | add_ap_files(sdata); |
371 | break; | |
05c914fe | 372 | case NL80211_IFTYPE_WDS: |
e9f207f0 JB |
373 | add_wds_files(sdata); |
374 | break; | |
05c914fe | 375 | case NL80211_IFTYPE_MONITOR: |
e9f207f0 JB |
376 | add_monitor_files(sdata); |
377 | break; | |
05c914fe | 378 | case NL80211_IFTYPE_AP_VLAN: |
e9f207f0 JB |
379 | add_vlan_files(sdata); |
380 | break; | |
381 | default: | |
382 | break; | |
383 | } | |
384 | } | |
385 | ||
e9f207f0 JB |
386 | void ieee80211_debugfs_add_netdev(struct ieee80211_sub_if_data *sdata) |
387 | { | |
388 | char buf[10+IFNAMSIZ]; | |
389 | ||
47846c9b | 390 | sprintf(buf, "netdev:%s", sdata->name); |
7bcfaf2f | 391 | sdata->debugfs.dir = debugfs_create_dir(buf, |
e9f207f0 | 392 | sdata->local->hw.wiphy->debugfsdir); |
75636525 | 393 | add_files(sdata); |
e9f207f0 JB |
394 | } |
395 | ||
396 | void ieee80211_debugfs_remove_netdev(struct ieee80211_sub_if_data *sdata) | |
397 | { | |
7bcfaf2f JB |
398 | if (!sdata->debugfs.dir) |
399 | return; | |
400 | ||
401 | debugfs_remove_recursive(sdata->debugfs.dir); | |
402 | sdata->debugfs.dir = NULL; | |
e9f207f0 JB |
403 | } |
404 | ||
47846c9b | 405 | void ieee80211_debugfs_rename_netdev(struct ieee80211_sub_if_data *sdata) |
e9f207f0 | 406 | { |
7c8081eb | 407 | struct dentry *dir; |
47846c9b | 408 | char buf[10 + IFNAMSIZ]; |
3e122be0 | 409 | |
7bcfaf2f | 410 | dir = sdata->debugfs.dir; |
c74e90a9 JB |
411 | |
412 | if (!dir) | |
47846c9b | 413 | return; |
c74e90a9 | 414 | |
47846c9b | 415 | sprintf(buf, "netdev:%s", sdata->name); |
7c8081eb JB |
416 | if (!debugfs_rename(dir->d_parent, dir, dir->d_parent, buf)) |
417 | printk(KERN_ERR "mac80211: debugfs: failed to rename debugfs " | |
418 | "dir to %s\n", buf); | |
e9f207f0 | 419 | } |