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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/slab.h>
17#include <linux/notifier.h>
18#include <net/mac80211.h>
19#include <net/cfg80211.h>
20#include "ieee80211_i.h"
21#include "rate.h"
22#include "debugfs.h"
23#include "debugfs_netdev.h"
24
25static 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);
35 if (sdata->dev->reg_state == NETREG_REGISTERED)
36 ret = (*format)(sdata, buf, sizeof(buf));
37 read_unlock(&dev_base_lock);
38
39 if (ret != -EINVAL)
40 ret = simple_read_from_buffer(userbuf, count, ppos, buf, ret);
41
42 return ret;
43}
44
45static 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;
52 ssize_t ret;
53
54 buf = kmalloc(count, GFP_KERNEL);
55 if (!buf)
56 return -ENOMEM;
57
58 ret = -EFAULT;
59 if (copy_from_user(buf, userbuf, count))
60 goto freebuf;
61
62 ret = -ENODEV;
63 rtnl_lock();
64 if (sdata->dev->reg_state == NETREG_REGISTERED)
65 ret = (*write)(sdata, buf, count);
66 rtnl_unlock();
67
68freebuf:
69 kfree(buf);
70 return ret;
71}
72
73#define IEEE80211_IF_FMT(name, field, format_string) \
74static 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) \
88static 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) \
96static ssize_t ieee80211_if_fmt_##name( \
97 const struct ieee80211_sub_if_data *sdata, char *buf, \
98 int buflen) \
99{ \
100 return scnprintf(buf, buflen, "%pM\n", sdata->field); \
101}
102
103#define IEEE80211_IF_FMT_DEC_DIV_16(name, field) \
104static ssize_t ieee80211_if_fmt_##name( \
105 const struct ieee80211_sub_if_data *sdata, \
106 char *buf, int buflen) \
107{ \
108 return scnprintf(buf, buflen, "%d\n", sdata->field / 16); \
109}
110
111#define __IEEE80211_IF_FILE(name, _write) \
112static ssize_t ieee80211_if_read_##name(struct file *file, \
113 char __user *userbuf, \
114 size_t count, loff_t *ppos) \
115{ \
116 return ieee80211_if_read(file->private_data, \
117 userbuf, count, ppos, \
118 ieee80211_if_fmt_##name); \
119} \
120static const struct file_operations name##_ops = { \
121 .read = ieee80211_if_read_##name, \
122 .write = (_write), \
123 .open = mac80211_open_file_generic, \
124 .llseek = generic_file_llseek, \
125}
126
127#define __IEEE80211_IF_FILE_W(name) \
128static ssize_t ieee80211_if_write_##name(struct file *file, \
129 const char __user *userbuf, \
130 size_t count, loff_t *ppos) \
131{ \
132 return ieee80211_if_write(file->private_data, userbuf, count, \
133 ppos, ieee80211_if_parse_##name); \
134} \
135__IEEE80211_IF_FILE(name, ieee80211_if_write_##name)
136
137
138#define IEEE80211_IF_FILE(name, field, format) \
139 IEEE80211_IF_FMT_##format(name, field) \
140 __IEEE80211_IF_FILE(name, NULL)
141
142
143IEEE80211_IF_FILE(drop_unencrypted, drop_unencrypted, DEC);
144IEEE80211_IF_FILE(rc_rateidx_mask_2ghz, rc_rateidx_mask[IEEE80211_BAND_2GHZ],
145 HEX);
146IEEE80211_IF_FILE(rc_rateidx_mask_5ghz, rc_rateidx_mask[IEEE80211_BAND_5GHZ],
147 HEX);
148
149
150IEEE80211_IF_FILE(bssid, u.mgd.bssid, MAC);
151IEEE80211_IF_FILE(aid, u.mgd.aid, DEC);
152IEEE80211_IF_FILE(last_beacon, u.mgd.last_beacon_signal, DEC);
153IEEE80211_IF_FILE(ave_beacon, u.mgd.ave_beacon_signal, DEC_DIV_16);
154
155static int ieee80211_set_smps(struct ieee80211_sub_if_data *sdata,
156 enum ieee80211_smps_mode smps_mode)
157{
158 struct ieee80211_local *local = sdata->local;
159 int err;
160
161 if (!(local->hw.flags & IEEE80211_HW_SUPPORTS_STATIC_SMPS) &&
162 smps_mode == IEEE80211_SMPS_STATIC)
163 return -EINVAL;
164
165
166 if (!(local->hw.flags & IEEE80211_HW_SUPPORTS_DYNAMIC_SMPS) &&
167 (smps_mode == IEEE80211_SMPS_DYNAMIC ||
168 smps_mode == IEEE80211_SMPS_AUTOMATIC))
169 return -EINVAL;
170
171
172 if (sdata->vif.type != NL80211_IFTYPE_STATION)
173 return -EOPNOTSUPP;
174
175 mutex_lock(&local->iflist_mtx);
176 err = __ieee80211_request_smps(sdata, smps_mode);
177 mutex_unlock(&local->iflist_mtx);
178
179 return err;
180}
181
182static const char *smps_modes[IEEE80211_SMPS_NUM_MODES] = {
183 [IEEE80211_SMPS_AUTOMATIC] = "auto",
184 [IEEE80211_SMPS_OFF] = "off",
185 [IEEE80211_SMPS_STATIC] = "static",
186 [IEEE80211_SMPS_DYNAMIC] = "dynamic",
187};
188
189static ssize_t ieee80211_if_fmt_smps(const struct ieee80211_sub_if_data *sdata,
190 char *buf, int buflen)
191{
192 if (sdata->vif.type != NL80211_IFTYPE_STATION)
193 return -EOPNOTSUPP;
194
195 return snprintf(buf, buflen, "request: %s\nused: %s\n",
196 smps_modes[sdata->u.mgd.req_smps],
197 smps_modes[sdata->u.mgd.ap_smps]);
198}
199
200static ssize_t ieee80211_if_parse_smps(struct ieee80211_sub_if_data *sdata,
201 const char *buf, int buflen)
202{
203 enum ieee80211_smps_mode mode;
204
205 for (mode = 0; mode < IEEE80211_SMPS_NUM_MODES; mode++) {
206 if (strncmp(buf, smps_modes[mode], buflen) == 0) {
207 int err = ieee80211_set_smps(sdata, mode);
208 if (!err)
209 return buflen;
210 return err;
211 }
212 }
213
214 return -EINVAL;
215}
216
217__IEEE80211_IF_FILE_W(smps);
218
219
220IEEE80211_IF_FILE(num_sta_ps, u.ap.num_sta_ps, ATOMIC);
221IEEE80211_IF_FILE(dtim_count, u.ap.dtim_count, DEC);
222
223static ssize_t ieee80211_if_fmt_num_buffered_multicast(
224 const struct ieee80211_sub_if_data *sdata, char *buf, int buflen)
225{
226 return scnprintf(buf, buflen, "%u\n",
227 skb_queue_len(&sdata->u.ap.ps_bc_buf));
228}
229__IEEE80211_IF_FILE(num_buffered_multicast, NULL);
230
231
232IEEE80211_IF_FILE(peer, u.wds.remote_addr, MAC);
233
234#ifdef CONFIG_MAC80211_MESH
235
236IEEE80211_IF_FILE(fwded_mcast, u.mesh.mshstats.fwded_mcast, DEC);
237IEEE80211_IF_FILE(fwded_unicast, u.mesh.mshstats.fwded_unicast, DEC);
238IEEE80211_IF_FILE(fwded_frames, u.mesh.mshstats.fwded_frames, DEC);
239IEEE80211_IF_FILE(dropped_frames_ttl, u.mesh.mshstats.dropped_frames_ttl, DEC);
240IEEE80211_IF_FILE(dropped_frames_no_route,
241 u.mesh.mshstats.dropped_frames_no_route, DEC);
242IEEE80211_IF_FILE(estab_plinks, u.mesh.mshstats.estab_plinks, ATOMIC);
243
244
245IEEE80211_IF_FILE(dot11MeshMaxRetries,
246 u.mesh.mshcfg.dot11MeshMaxRetries, DEC);
247IEEE80211_IF_FILE(dot11MeshRetryTimeout,
248 u.mesh.mshcfg.dot11MeshRetryTimeout, DEC);
249IEEE80211_IF_FILE(dot11MeshConfirmTimeout,
250 u.mesh.mshcfg.dot11MeshConfirmTimeout, DEC);
251IEEE80211_IF_FILE(dot11MeshHoldingTimeout,
252 u.mesh.mshcfg.dot11MeshHoldingTimeout, DEC);
253IEEE80211_IF_FILE(dot11MeshTTL, u.mesh.mshcfg.dot11MeshTTL, DEC);
254IEEE80211_IF_FILE(auto_open_plinks, u.mesh.mshcfg.auto_open_plinks, DEC);
255IEEE80211_IF_FILE(dot11MeshMaxPeerLinks,
256 u.mesh.mshcfg.dot11MeshMaxPeerLinks, DEC);
257IEEE80211_IF_FILE(dot11MeshHWMPactivePathTimeout,
258 u.mesh.mshcfg.dot11MeshHWMPactivePathTimeout, DEC);
259IEEE80211_IF_FILE(dot11MeshHWMPpreqMinInterval,
260 u.mesh.mshcfg.dot11MeshHWMPpreqMinInterval, DEC);
261IEEE80211_IF_FILE(dot11MeshHWMPnetDiameterTraversalTime,
262 u.mesh.mshcfg.dot11MeshHWMPnetDiameterTraversalTime, DEC);
263IEEE80211_IF_FILE(dot11MeshHWMPmaxPREQretries,
264 u.mesh.mshcfg.dot11MeshHWMPmaxPREQretries, DEC);
265IEEE80211_IF_FILE(path_refresh_time,
266 u.mesh.mshcfg.path_refresh_time, DEC);
267IEEE80211_IF_FILE(min_discovery_timeout,
268 u.mesh.mshcfg.min_discovery_timeout, DEC);
269IEEE80211_IF_FILE(dot11MeshHWMPRootMode,
270 u.mesh.mshcfg.dot11MeshHWMPRootMode, DEC);
271#endif
272
273
274#define DEBUGFS_ADD(name) \
275 debugfs_create_file(#name, 0400, sdata->debugfs.dir, \
276 sdata, &name##_ops);
277
278#define DEBUGFS_ADD_MODE(name, mode) \
279 debugfs_create_file(#name, mode, sdata->debugfs.dir, \
280 sdata, &name##_ops);
281
282static void add_sta_files(struct ieee80211_sub_if_data *sdata)
283{
284 DEBUGFS_ADD(drop_unencrypted);
285 DEBUGFS_ADD(rc_rateidx_mask_2ghz);
286 DEBUGFS_ADD(rc_rateidx_mask_5ghz);
287
288 DEBUGFS_ADD(bssid);
289 DEBUGFS_ADD(aid);
290 DEBUGFS_ADD(last_beacon);
291 DEBUGFS_ADD(ave_beacon);
292 DEBUGFS_ADD_MODE(smps, 0600);
293}
294
295static void add_ap_files(struct ieee80211_sub_if_data *sdata)
296{
297 DEBUGFS_ADD(drop_unencrypted);
298 DEBUGFS_ADD(rc_rateidx_mask_2ghz);
299 DEBUGFS_ADD(rc_rateidx_mask_5ghz);
300
301 DEBUGFS_ADD(num_sta_ps);
302 DEBUGFS_ADD(dtim_count);
303 DEBUGFS_ADD(num_buffered_multicast);
304}
305
306static void add_wds_files(struct ieee80211_sub_if_data *sdata)
307{
308 DEBUGFS_ADD(drop_unencrypted);
309 DEBUGFS_ADD(rc_rateidx_mask_2ghz);
310 DEBUGFS_ADD(rc_rateidx_mask_5ghz);
311
312 DEBUGFS_ADD(peer);
313}
314
315static void add_vlan_files(struct ieee80211_sub_if_data *sdata)
316{
317 DEBUGFS_ADD(drop_unencrypted);
318 DEBUGFS_ADD(rc_rateidx_mask_2ghz);
319 DEBUGFS_ADD(rc_rateidx_mask_5ghz);
320}
321
322static void add_monitor_files(struct ieee80211_sub_if_data *sdata)
323{
324}
325
326#ifdef CONFIG_MAC80211_MESH
327
328static void add_mesh_stats(struct ieee80211_sub_if_data *sdata)
329{
330 struct dentry *dir = debugfs_create_dir("mesh_stats",
331 sdata->debugfs.dir);
332
333#define MESHSTATS_ADD(name)\
334 debugfs_create_file(#name, 0400, dir, sdata, &name##_ops);
335
336 MESHSTATS_ADD(fwded_mcast);
337 MESHSTATS_ADD(fwded_unicast);
338 MESHSTATS_ADD(fwded_frames);
339 MESHSTATS_ADD(dropped_frames_ttl);
340 MESHSTATS_ADD(dropped_frames_no_route);
341 MESHSTATS_ADD(estab_plinks);
342#undef MESHSTATS_ADD
343}
344
345static void add_mesh_config(struct ieee80211_sub_if_data *sdata)
346{
347 struct dentry *dir = debugfs_create_dir("mesh_config",
348 sdata->debugfs.dir);
349
350#define MESHPARAMS_ADD(name) \
351 debugfs_create_file(#name, 0600, dir, sdata, &name##_ops);
352
353 MESHPARAMS_ADD(dot11MeshMaxRetries);
354 MESHPARAMS_ADD(dot11MeshRetryTimeout);
355 MESHPARAMS_ADD(dot11MeshConfirmTimeout);
356 MESHPARAMS_ADD(dot11MeshHoldingTimeout);
357 MESHPARAMS_ADD(dot11MeshTTL);
358 MESHPARAMS_ADD(auto_open_plinks);
359 MESHPARAMS_ADD(dot11MeshMaxPeerLinks);
360 MESHPARAMS_ADD(dot11MeshHWMPactivePathTimeout);
361 MESHPARAMS_ADD(dot11MeshHWMPpreqMinInterval);
362 MESHPARAMS_ADD(dot11MeshHWMPnetDiameterTraversalTime);
363 MESHPARAMS_ADD(dot11MeshHWMPmaxPREQretries);
364 MESHPARAMS_ADD(path_refresh_time);
365 MESHPARAMS_ADD(min_discovery_timeout);
366
367#undef MESHPARAMS_ADD
368}
369#endif
370
371static void add_files(struct ieee80211_sub_if_data *sdata)
372{
373 if (!sdata->debugfs.dir)
374 return;
375
376 switch (sdata->vif.type) {
377 case NL80211_IFTYPE_MESH_POINT:
378#ifdef CONFIG_MAC80211_MESH
379 add_mesh_stats(sdata);
380 add_mesh_config(sdata);
381#endif
382 break;
383 case NL80211_IFTYPE_STATION:
384 add_sta_files(sdata);
385 break;
386 case NL80211_IFTYPE_ADHOC:
387
388 break;
389 case NL80211_IFTYPE_AP:
390 add_ap_files(sdata);
391 break;
392 case NL80211_IFTYPE_WDS:
393 add_wds_files(sdata);
394 break;
395 case NL80211_IFTYPE_MONITOR:
396 add_monitor_files(sdata);
397 break;
398 case NL80211_IFTYPE_AP_VLAN:
399 add_vlan_files(sdata);
400 break;
401 default:
402 break;
403 }
404}
405
406void ieee80211_debugfs_add_netdev(struct ieee80211_sub_if_data *sdata)
407{
408 char buf[10+IFNAMSIZ];
409
410 sprintf(buf, "netdev:%s", sdata->name);
411 sdata->debugfs.dir = debugfs_create_dir(buf,
412 sdata->local->hw.wiphy->debugfsdir);
413 if (sdata->debugfs.dir)
414 sdata->debugfs.subdir_stations = debugfs_create_dir("stations",
415 sdata->debugfs.dir);
416 add_files(sdata);
417}
418
419void ieee80211_debugfs_remove_netdev(struct ieee80211_sub_if_data *sdata)
420{
421 if (!sdata->debugfs.dir)
422 return;
423
424 debugfs_remove_recursive(sdata->debugfs.dir);
425 sdata->debugfs.dir = NULL;
426}
427
428void ieee80211_debugfs_rename_netdev(struct ieee80211_sub_if_data *sdata)
429{
430 struct dentry *dir;
431 char buf[10 + IFNAMSIZ];
432
433 dir = sdata->debugfs.dir;
434
435 if (!dir)
436 return;
437
438 sprintf(buf, "netdev:%s", sdata->name);
439 if (!debugfs_rename(dir->d_parent, dir, dir->d_parent, buf))
440 printk(KERN_ERR "mac80211: debugfs: failed to rename debugfs "
441 "dir to %s\n", buf);
442}
443
