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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> | |
5a0e3ad6 | 16 | #include <linux/slab.h> |
e9f207f0 JB |
17 | #include <linux/notifier.h> |
18 | #include <net/mac80211.h> | |
19 | #include <net/cfg80211.h> | |
20 | #include "ieee80211_i.h" | |
2c8dccc7 | 21 | #include "rate.h" |
e9f207f0 JB |
22 | #include "debugfs.h" |
23 | #include "debugfs_netdev.h" | |
24 | ||
25 | static ssize_t ieee80211_if_read( | |
26 | struct ieee80211_sub_if_data *sdata, | |
27 | char __user *userbuf, | |
28 | size_t count, loff_t *ppos, | |
29 | ssize_t (*format)(const struct ieee80211_sub_if_data *, char *, int)) | |
30 | { | |
31 | char buf[70]; | |
32 | ssize_t ret = -EINVAL; | |
33 | ||
34 | read_lock(&dev_base_lock); | |
73bb3e4a | 35 | if (sdata->dev->reg_state == NETREG_REGISTERED) |
e9f207f0 | 36 | ret = (*format)(sdata, buf, sizeof(buf)); |
e9f207f0 | 37 | read_unlock(&dev_base_lock); |
73bb3e4a LCC |
38 | |
39 | if (ret != -EINVAL) | |
40 | ret = simple_read_from_buffer(userbuf, count, ppos, buf, ret); | |
41 | ||
e9f207f0 JB |
42 | return ret; |
43 | } | |
44 | ||
0f78231b JB |
45 | static ssize_t ieee80211_if_write( |
46 | struct ieee80211_sub_if_data *sdata, | |
47 | const char __user *userbuf, | |
48 | size_t count, loff_t *ppos, | |
49 | ssize_t (*write)(struct ieee80211_sub_if_data *, const char *, int)) | |
50 | { | |
51 | u8 *buf; | |
51f5f8ca | 52 | ssize_t ret; |
0f78231b | 53 | |
51f5f8ca | 54 | buf = kmalloc(count, GFP_KERNEL); |
0f78231b JB |
55 | if (!buf) |
56 | return -ENOMEM; | |
57 | ||
51f5f8ca | 58 | ret = -EFAULT; |
0f78231b | 59 | if (copy_from_user(buf, userbuf, count)) |
51f5f8ca | 60 | goto freebuf; |
0f78231b | 61 | |
51f5f8ca | 62 | ret = -ENODEV; |
0f78231b JB |
63 | rtnl_lock(); |
64 | if (sdata->dev->reg_state == NETREG_REGISTERED) | |
65 | ret = (*write)(sdata, buf, count); | |
66 | rtnl_unlock(); | |
67 | ||
51f5f8ca ED |
68 | freebuf: |
69 | kfree(buf); | |
0f78231b JB |
70 | return ret; |
71 | } | |
72 | ||
e9f207f0 JB |
73 | #define IEEE80211_IF_FMT(name, field, format_string) \ |
74 | static ssize_t ieee80211_if_fmt_##name( \ | |
75 | const struct ieee80211_sub_if_data *sdata, char *buf, \ | |
76 | int buflen) \ | |
77 | { \ | |
78 | return scnprintf(buf, buflen, format_string, sdata->field); \ | |
79 | } | |
80 | #define IEEE80211_IF_FMT_DEC(name, field) \ | |
81 | IEEE80211_IF_FMT(name, field, "%d\n") | |
82 | #define IEEE80211_IF_FMT_HEX(name, field) \ | |
83 | IEEE80211_IF_FMT(name, field, "%#x\n") | |
84 | #define IEEE80211_IF_FMT_SIZE(name, field) \ | |
85 | IEEE80211_IF_FMT(name, field, "%zd\n") | |
86 | ||
87 | #define IEEE80211_IF_FMT_ATOMIC(name, field) \ | |
88 | static ssize_t ieee80211_if_fmt_##name( \ | |
89 | const struct ieee80211_sub_if_data *sdata, \ | |
90 | char *buf, int buflen) \ | |
91 | { \ | |
92 | return scnprintf(buf, buflen, "%d\n", atomic_read(&sdata->field));\ | |
93 | } | |
94 | ||
95 | #define IEEE80211_IF_FMT_MAC(name, field) \ | |
96 | static ssize_t ieee80211_if_fmt_##name( \ | |
97 | const struct ieee80211_sub_if_data *sdata, char *buf, \ | |
98 | int buflen) \ | |
99 | { \ | |
0c68ae26 | 100 | return scnprintf(buf, buflen, "%pM\n", sdata->field); \ |
e9f207f0 JB |
101 | } |
102 | ||
0f78231b | 103 | #define __IEEE80211_IF_FILE(name, _write) \ |
e9f207f0 JB |
104 | static ssize_t ieee80211_if_read_##name(struct file *file, \ |
105 | char __user *userbuf, \ | |
106 | size_t count, loff_t *ppos) \ | |
107 | { \ | |
108 | return ieee80211_if_read(file->private_data, \ | |
109 | userbuf, count, ppos, \ | |
110 | ieee80211_if_fmt_##name); \ | |
111 | } \ | |
112 | static const struct file_operations name##_ops = { \ | |
113 | .read = ieee80211_if_read_##name, \ | |
0f78231b | 114 | .write = (_write), \ |
e9f207f0 JB |
115 | .open = mac80211_open_file_generic, \ |
116 | } | |
117 | ||
0f78231b JB |
118 | #define __IEEE80211_IF_FILE_W(name) \ |
119 | static ssize_t ieee80211_if_write_##name(struct file *file, \ | |
120 | const char __user *userbuf, \ | |
121 | size_t count, loff_t *ppos) \ | |
122 | { \ | |
123 | return ieee80211_if_write(file->private_data, userbuf, count, \ | |
124 | ppos, ieee80211_if_parse_##name); \ | |
125 | } \ | |
126 | __IEEE80211_IF_FILE(name, ieee80211_if_write_##name) | |
127 | ||
128 | ||
e9f207f0 JB |
129 | #define IEEE80211_IF_FILE(name, field, format) \ |
130 | IEEE80211_IF_FMT_##format(name, field) \ | |
0f78231b | 131 | __IEEE80211_IF_FILE(name, NULL) |
e9f207f0 JB |
132 | |
133 | /* common attributes */ | |
e9f207f0 | 134 | IEEE80211_IF_FILE(drop_unencrypted, drop_unencrypted, DEC); |
37eb0b16 JM |
135 | IEEE80211_IF_FILE(rc_rateidx_mask_2ghz, rc_rateidx_mask[IEEE80211_BAND_2GHZ], |
136 | HEX); | |
137 | IEEE80211_IF_FILE(rc_rateidx_mask_5ghz, rc_rateidx_mask[IEEE80211_BAND_5GHZ], | |
138 | HEX); | |
e9f207f0 | 139 | |
46900298 | 140 | /* STA attributes */ |
46900298 | 141 | IEEE80211_IF_FILE(bssid, u.mgd.bssid, MAC); |
46900298 | 142 | IEEE80211_IF_FILE(aid, u.mgd.aid, DEC); |
e9f207f0 | 143 | |
0f78231b JB |
144 | static int ieee80211_set_smps(struct ieee80211_sub_if_data *sdata, |
145 | enum ieee80211_smps_mode smps_mode) | |
146 | { | |
147 | struct ieee80211_local *local = sdata->local; | |
148 | int err; | |
149 | ||
150 | if (!(local->hw.flags & IEEE80211_HW_SUPPORTS_STATIC_SMPS) && | |
151 | smps_mode == IEEE80211_SMPS_STATIC) | |
152 | return -EINVAL; | |
153 | ||
154 | /* auto should be dynamic if in PS mode */ | |
155 | if (!(local->hw.flags & IEEE80211_HW_SUPPORTS_DYNAMIC_SMPS) && | |
156 | (smps_mode == IEEE80211_SMPS_DYNAMIC || | |
157 | smps_mode == IEEE80211_SMPS_AUTOMATIC)) | |
158 | return -EINVAL; | |
159 | ||
160 | /* supported only on managed interfaces for now */ | |
161 | if (sdata->vif.type != NL80211_IFTYPE_STATION) | |
162 | return -EOPNOTSUPP; | |
163 | ||
164 | mutex_lock(&local->iflist_mtx); | |
165 | err = __ieee80211_request_smps(sdata, smps_mode); | |
166 | mutex_unlock(&local->iflist_mtx); | |
167 | ||
168 | return err; | |
169 | } | |
170 | ||
171 | static const char *smps_modes[IEEE80211_SMPS_NUM_MODES] = { | |
172 | [IEEE80211_SMPS_AUTOMATIC] = "auto", | |
173 | [IEEE80211_SMPS_OFF] = "off", | |
174 | [IEEE80211_SMPS_STATIC] = "static", | |
175 | [IEEE80211_SMPS_DYNAMIC] = "dynamic", | |
176 | }; | |
177 | ||
178 | static ssize_t ieee80211_if_fmt_smps(const struct ieee80211_sub_if_data *sdata, | |
179 | char *buf, int buflen) | |
180 | { | |
181 | if (sdata->vif.type != NL80211_IFTYPE_STATION) | |
182 | return -EOPNOTSUPP; | |
183 | ||
184 | return snprintf(buf, buflen, "request: %s\nused: %s\n", | |
185 | smps_modes[sdata->u.mgd.req_smps], | |
186 | smps_modes[sdata->u.mgd.ap_smps]); | |
187 | } | |
188 | ||
189 | static ssize_t ieee80211_if_parse_smps(struct ieee80211_sub_if_data *sdata, | |
190 | const char *buf, int buflen) | |
191 | { | |
192 | enum ieee80211_smps_mode mode; | |
193 | ||
194 | for (mode = 0; mode < IEEE80211_SMPS_NUM_MODES; mode++) { | |
195 | if (strncmp(buf, smps_modes[mode], buflen) == 0) { | |
196 | int err = ieee80211_set_smps(sdata, mode); | |
197 | if (!err) | |
198 | return buflen; | |
199 | return err; | |
200 | } | |
201 | } | |
202 | ||
203 | return -EINVAL; | |
204 | } | |
205 | ||
206 | __IEEE80211_IF_FILE_W(smps); | |
207 | ||
e9f207f0 JB |
208 | /* AP attributes */ |
209 | IEEE80211_IF_FILE(num_sta_ps, u.ap.num_sta_ps, ATOMIC); | |
e9f207f0 | 210 | IEEE80211_IF_FILE(dtim_count, u.ap.dtim_count, DEC); |
e9f207f0 JB |
211 | |
212 | static ssize_t ieee80211_if_fmt_num_buffered_multicast( | |
213 | const struct ieee80211_sub_if_data *sdata, char *buf, int buflen) | |
214 | { | |
215 | return scnprintf(buf, buflen, "%u\n", | |
216 | skb_queue_len(&sdata->u.ap.ps_bc_buf)); | |
217 | } | |
0f78231b | 218 | __IEEE80211_IF_FILE(num_buffered_multicast, NULL); |
e9f207f0 | 219 | |
e9f207f0 JB |
220 | /* WDS attributes */ |
221 | IEEE80211_IF_FILE(peer, u.wds.remote_addr, MAC); | |
222 | ||
9f42f607 LCC |
223 | #ifdef CONFIG_MAC80211_MESH |
224 | /* Mesh stats attributes */ | |
c8a61a7d DW |
225 | IEEE80211_IF_FILE(fwded_mcast, u.mesh.mshstats.fwded_mcast, DEC); |
226 | IEEE80211_IF_FILE(fwded_unicast, u.mesh.mshstats.fwded_unicast, DEC); | |
472dbc45 JB |
227 | IEEE80211_IF_FILE(fwded_frames, u.mesh.mshstats.fwded_frames, DEC); |
228 | IEEE80211_IF_FILE(dropped_frames_ttl, u.mesh.mshstats.dropped_frames_ttl, DEC); | |
9f42f607 | 229 | IEEE80211_IF_FILE(dropped_frames_no_route, |
472dbc45 JB |
230 | u.mesh.mshstats.dropped_frames_no_route, DEC); |
231 | IEEE80211_IF_FILE(estab_plinks, u.mesh.mshstats.estab_plinks, ATOMIC); | |
9f42f607 LCC |
232 | |
233 | /* Mesh parameters */ | |
36ff382d JB |
234 | IEEE80211_IF_FILE(dot11MeshMaxRetries, |
235 | u.mesh.mshcfg.dot11MeshMaxRetries, DEC); | |
236 | IEEE80211_IF_FILE(dot11MeshRetryTimeout, | |
237 | u.mesh.mshcfg.dot11MeshRetryTimeout, DEC); | |
238 | IEEE80211_IF_FILE(dot11MeshConfirmTimeout, | |
239 | u.mesh.mshcfg.dot11MeshConfirmTimeout, DEC); | |
240 | IEEE80211_IF_FILE(dot11MeshHoldingTimeout, | |
241 | u.mesh.mshcfg.dot11MeshHoldingTimeout, DEC); | |
242 | IEEE80211_IF_FILE(dot11MeshTTL, u.mesh.mshcfg.dot11MeshTTL, DEC); | |
243 | IEEE80211_IF_FILE(auto_open_plinks, u.mesh.mshcfg.auto_open_plinks, DEC); | |
244 | IEEE80211_IF_FILE(dot11MeshMaxPeerLinks, | |
245 | u.mesh.mshcfg.dot11MeshMaxPeerLinks, DEC); | |
246 | IEEE80211_IF_FILE(dot11MeshHWMPactivePathTimeout, | |
247 | u.mesh.mshcfg.dot11MeshHWMPactivePathTimeout, DEC); | |
248 | IEEE80211_IF_FILE(dot11MeshHWMPpreqMinInterval, | |
249 | u.mesh.mshcfg.dot11MeshHWMPpreqMinInterval, DEC); | |
250 | IEEE80211_IF_FILE(dot11MeshHWMPnetDiameterTraversalTime, | |
251 | u.mesh.mshcfg.dot11MeshHWMPnetDiameterTraversalTime, DEC); | |
252 | IEEE80211_IF_FILE(dot11MeshHWMPmaxPREQretries, | |
253 | u.mesh.mshcfg.dot11MeshHWMPmaxPREQretries, DEC); | |
254 | IEEE80211_IF_FILE(path_refresh_time, | |
255 | u.mesh.mshcfg.path_refresh_time, DEC); | |
256 | IEEE80211_IF_FILE(min_discovery_timeout, | |
257 | u.mesh.mshcfg.min_discovery_timeout, DEC); | |
63c5723b RP |
258 | IEEE80211_IF_FILE(dot11MeshHWMPRootMode, |
259 | u.mesh.mshcfg.dot11MeshHWMPRootMode, DEC); | |
9f42f607 LCC |
260 | #endif |
261 | ||
262 | ||
2d46d7c1 | 263 | #define DEBUGFS_ADD(name) \ |
7bcfaf2f JB |
264 | debugfs_create_file(#name, 0400, sdata->debugfs.dir, \ |
265 | sdata, &name##_ops); | |
e9f207f0 | 266 | |
0f78231b JB |
267 | #define DEBUGFS_ADD_MODE(name, mode) \ |
268 | debugfs_create_file(#name, mode, sdata->debugfs.dir, \ | |
269 | sdata, &name##_ops); | |
270 | ||
e9f207f0 JB |
271 | static void add_sta_files(struct ieee80211_sub_if_data *sdata) |
272 | { | |
2d46d7c1 JB |
273 | DEBUGFS_ADD(drop_unencrypted); |
274 | DEBUGFS_ADD(rc_rateidx_mask_2ghz); | |
275 | DEBUGFS_ADD(rc_rateidx_mask_5ghz); | |
3e122be0 | 276 | |
2d46d7c1 JB |
277 | DEBUGFS_ADD(bssid); |
278 | DEBUGFS_ADD(aid); | |
0f78231b | 279 | DEBUGFS_ADD_MODE(smps, 0600); |
e9f207f0 JB |
280 | } |
281 | ||
282 | static void add_ap_files(struct ieee80211_sub_if_data *sdata) | |
283 | { | |
2d46d7c1 JB |
284 | DEBUGFS_ADD(drop_unencrypted); |
285 | DEBUGFS_ADD(rc_rateidx_mask_2ghz); | |
286 | DEBUGFS_ADD(rc_rateidx_mask_5ghz); | |
3e122be0 | 287 | |
2d46d7c1 JB |
288 | DEBUGFS_ADD(num_sta_ps); |
289 | DEBUGFS_ADD(dtim_count); | |
290 | DEBUGFS_ADD(num_buffered_multicast); | |
e9f207f0 JB |
291 | } |
292 | ||
293 | static void add_wds_files(struct ieee80211_sub_if_data *sdata) | |
294 | { | |
2d46d7c1 JB |
295 | DEBUGFS_ADD(drop_unencrypted); |
296 | DEBUGFS_ADD(rc_rateidx_mask_2ghz); | |
297 | DEBUGFS_ADD(rc_rateidx_mask_5ghz); | |
3e122be0 | 298 | |
2d46d7c1 | 299 | DEBUGFS_ADD(peer); |
e9f207f0 JB |
300 | } |
301 | ||
302 | static void add_vlan_files(struct ieee80211_sub_if_data *sdata) | |
303 | { | |
2d46d7c1 JB |
304 | DEBUGFS_ADD(drop_unencrypted); |
305 | DEBUGFS_ADD(rc_rateidx_mask_2ghz); | |
306 | DEBUGFS_ADD(rc_rateidx_mask_5ghz); | |
e9f207f0 JB |
307 | } |
308 | ||
309 | static void add_monitor_files(struct ieee80211_sub_if_data *sdata) | |
310 | { | |
e9f207f0 JB |
311 | } |
312 | ||
9f42f607 | 313 | #ifdef CONFIG_MAC80211_MESH |
9f42f607 LCC |
314 | |
315 | static void add_mesh_stats(struct ieee80211_sub_if_data *sdata) | |
316 | { | |
7bcfaf2f JB |
317 | struct dentry *dir = debugfs_create_dir("mesh_stats", |
318 | sdata->debugfs.dir); | |
319 | ||
320 | #define MESHSTATS_ADD(name)\ | |
321 | debugfs_create_file(#name, 0400, dir, sdata, &name##_ops); | |
322 | ||
c8a61a7d DW |
323 | MESHSTATS_ADD(fwded_mcast); |
324 | MESHSTATS_ADD(fwded_unicast); | |
9f42f607 LCC |
325 | MESHSTATS_ADD(fwded_frames); |
326 | MESHSTATS_ADD(dropped_frames_ttl); | |
327 | MESHSTATS_ADD(dropped_frames_no_route); | |
328 | MESHSTATS_ADD(estab_plinks); | |
7bcfaf2f | 329 | #undef MESHSTATS_ADD |
9f42f607 LCC |
330 | } |
331 | ||
9f42f607 LCC |
332 | static void add_mesh_config(struct ieee80211_sub_if_data *sdata) |
333 | { | |
7bcfaf2f JB |
334 | struct dentry *dir = debugfs_create_dir("mesh_config", |
335 | sdata->debugfs.dir); | |
336 | ||
337 | #define MESHPARAMS_ADD(name) \ | |
338 | debugfs_create_file(#name, 0600, dir, sdata, &name##_ops); | |
339 | ||
9f42f607 LCC |
340 | MESHPARAMS_ADD(dot11MeshMaxRetries); |
341 | MESHPARAMS_ADD(dot11MeshRetryTimeout); | |
342 | MESHPARAMS_ADD(dot11MeshConfirmTimeout); | |
343 | MESHPARAMS_ADD(dot11MeshHoldingTimeout); | |
344 | MESHPARAMS_ADD(dot11MeshTTL); | |
345 | MESHPARAMS_ADD(auto_open_plinks); | |
346 | MESHPARAMS_ADD(dot11MeshMaxPeerLinks); | |
347 | MESHPARAMS_ADD(dot11MeshHWMPactivePathTimeout); | |
348 | MESHPARAMS_ADD(dot11MeshHWMPpreqMinInterval); | |
349 | MESHPARAMS_ADD(dot11MeshHWMPnetDiameterTraversalTime); | |
350 | MESHPARAMS_ADD(dot11MeshHWMPmaxPREQretries); | |
351 | MESHPARAMS_ADD(path_refresh_time); | |
352 | MESHPARAMS_ADD(min_discovery_timeout); | |
7bcfaf2f JB |
353 | |
354 | #undef MESHPARAMS_ADD | |
9f42f607 LCC |
355 | } |
356 | #endif | |
357 | ||
e9f207f0 JB |
358 | static void add_files(struct ieee80211_sub_if_data *sdata) |
359 | { | |
7bcfaf2f | 360 | if (!sdata->debugfs.dir) |
e9f207f0 JB |
361 | return; |
362 | ||
51fb61e7 | 363 | switch (sdata->vif.type) { |
05c914fe | 364 | case NL80211_IFTYPE_MESH_POINT: |
9f42f607 LCC |
365 | #ifdef CONFIG_MAC80211_MESH |
366 | add_mesh_stats(sdata); | |
367 | add_mesh_config(sdata); | |
368 | #endif | |
472dbc45 | 369 | break; |
05c914fe | 370 | case NL80211_IFTYPE_STATION: |
e9f207f0 JB |
371 | add_sta_files(sdata); |
372 | break; | |
46900298 JB |
373 | case NL80211_IFTYPE_ADHOC: |
374 | /* XXX */ | |
375 | break; | |
05c914fe | 376 | case NL80211_IFTYPE_AP: |
e9f207f0 JB |
377 | add_ap_files(sdata); |
378 | break; | |
05c914fe | 379 | case NL80211_IFTYPE_WDS: |
e9f207f0 JB |
380 | add_wds_files(sdata); |
381 | break; | |
05c914fe | 382 | case NL80211_IFTYPE_MONITOR: |
e9f207f0 JB |
383 | add_monitor_files(sdata); |
384 | break; | |
05c914fe | 385 | case NL80211_IFTYPE_AP_VLAN: |
e9f207f0 JB |
386 | add_vlan_files(sdata); |
387 | break; | |
388 | default: | |
389 | break; | |
390 | } | |
391 | } | |
392 | ||
e9f207f0 JB |
393 | void ieee80211_debugfs_add_netdev(struct ieee80211_sub_if_data *sdata) |
394 | { | |
395 | char buf[10+IFNAMSIZ]; | |
396 | ||
47846c9b | 397 | sprintf(buf, "netdev:%s", sdata->name); |
7bcfaf2f | 398 | sdata->debugfs.dir = debugfs_create_dir(buf, |
e9f207f0 | 399 | sdata->local->hw.wiphy->debugfsdir); |
75636525 | 400 | add_files(sdata); |
e9f207f0 JB |
401 | } |
402 | ||
403 | void ieee80211_debugfs_remove_netdev(struct ieee80211_sub_if_data *sdata) | |
404 | { | |
7bcfaf2f JB |
405 | if (!sdata->debugfs.dir) |
406 | return; | |
407 | ||
408 | debugfs_remove_recursive(sdata->debugfs.dir); | |
409 | sdata->debugfs.dir = NULL; | |
e9f207f0 JB |
410 | } |
411 | ||
47846c9b | 412 | void ieee80211_debugfs_rename_netdev(struct ieee80211_sub_if_data *sdata) |
e9f207f0 | 413 | { |
7c8081eb | 414 | struct dentry *dir; |
47846c9b | 415 | char buf[10 + IFNAMSIZ]; |
3e122be0 | 416 | |
7bcfaf2f | 417 | dir = sdata->debugfs.dir; |
c74e90a9 JB |
418 | |
419 | if (!dir) | |
47846c9b | 420 | return; |
c74e90a9 | 421 | |
47846c9b | 422 | sprintf(buf, "netdev:%s", sdata->name); |
7c8081eb JB |
423 | if (!debugfs_rename(dir->d_parent, dir, dir->d_parent, buf)) |
424 | printk(KERN_ERR "mac80211: debugfs: failed to rename debugfs " | |
425 | "dir to %s\n", buf); | |
e9f207f0 | 426 | } |