blob: a694c593ff6ac1e17479ae07d26ad1fd02f258ba [file] [log] [blame]
Johannes Berg7bcfaf22009-10-27 12:59:03 +01001
Jiri Bence9f207f2007-05-05 11:46:38 -07002/*
3 * mac80211 debugfs for wireless PHYs
4 *
5 * Copyright 2007 Johannes Berg <johannes@sipsolutions.net>
6 *
7 * GPLv2
8 *
9 */
10
11#include <linux/debugfs.h>
12#include <linux/rtnetlink.h>
13#include "ieee80211_i.h"
Johannes Berg24487982009-04-23 18:52:52 +020014#include "driver-ops.h"
Johannes Berg2c8dccc2008-04-08 15:14:40 -040015#include "rate.h"
Jiri Bence9f207f2007-05-05 11:46:38 -070016#include "debugfs.h"
17
18int mac80211_open_file_generic(struct inode *inode, struct file *file)
19{
20 file->private_data = inode->i_private;
21 return 0;
22}
23
Jiri Bence9f207f2007-05-05 11:46:38 -070024#define DEBUGFS_READONLY_FILE(name, buflen, fmt, value...) \
25static ssize_t name## _read(struct file *file, char __user *userbuf, \
26 size_t count, loff_t *ppos) \
27{ \
28 struct ieee80211_local *local = file->private_data; \
29 char buf[buflen]; \
30 int res; \
31 \
32 res = scnprintf(buf, buflen, fmt "\n", ##value); \
33 return simple_read_from_buffer(userbuf, count, ppos, buf, res); \
34} \
35 \
36static const struct file_operations name## _ops = { \
37 .read = name## _read, \
38 .open = mac80211_open_file_generic, \
39};
40
41#define DEBUGFS_ADD(name) \
Johannes Berg7bcfaf22009-10-27 12:59:03 +010042 debugfs_create_file(#name, 0400, phyd, local, &name## _ops);
Jiri Bence9f207f2007-05-05 11:46:38 -070043
Johannes Berg827b1fb2009-03-13 11:44:18 +010044#define DEBUGFS_ADD_MODE(name, mode) \
Johannes Berg7bcfaf22009-10-27 12:59:03 +010045 debugfs_create_file(#name, mode, phyd, local, &name## _ops);
Jiri Bence9f207f2007-05-05 11:46:38 -070046
47
Jiri Bence9f207f2007-05-05 11:46:38 -070048DEBUGFS_READONLY_FILE(frequency, 20, "%d",
Johannes Berg8318d782008-01-24 19:38:38 +010049 local->hw.conf.channel->center_freq);
Jiri Bence9f207f2007-05-05 11:46:38 -070050DEBUGFS_READONLY_FILE(total_ps_buffered, 20, "%d",
51 local->total_ps_buffered);
Alina Friedrichsen3b5d6652009-01-24 07:09:59 +010052DEBUGFS_READONLY_FILE(wep_iv, 20, "%#08x",
Jiri Bence9f207f2007-05-05 11:46:38 -070053 local->wep_iv & 0xffffff);
Jiri Bence9f207f2007-05-05 11:46:38 -070054DEBUGFS_READONLY_FILE(rate_ctrl_alg, 100, "%s",
Johannes Bergaf65cd962009-11-17 18:18:36 +010055 local->rate_ctrl ? local->rate_ctrl->ops->name : "hw/driver");
Alina Friedrichsen3b5d6652009-01-24 07:09:59 +010056
57static ssize_t tsf_read(struct file *file, char __user *user_buf,
58 size_t count, loff_t *ppos)
59{
60 struct ieee80211_local *local = file->private_data;
Johannes Berg24487982009-04-23 18:52:52 +020061 u64 tsf;
Alina Friedrichsen3b5d6652009-01-24 07:09:59 +010062 char buf[100];
63
Johannes Berg24487982009-04-23 18:52:52 +020064 tsf = drv_get_tsf(local);
Alina Friedrichsen3b5d6652009-01-24 07:09:59 +010065
66 snprintf(buf, sizeof(buf), "0x%016llx\n", (unsigned long long) tsf);
67
68 return simple_read_from_buffer(user_buf, count, ppos, buf, 19);
69}
70
71static ssize_t tsf_write(struct file *file,
72 const char __user *user_buf,
73 size_t count, loff_t *ppos)
74{
75 struct ieee80211_local *local = file->private_data;
76 unsigned long long tsf;
77 char buf[100];
78 size_t len;
79
80 len = min(count, sizeof(buf) - 1);
81 if (copy_from_user(buf, user_buf, len))
82 return -EFAULT;
83 buf[len] = '\0';
84
85 if (strncmp(buf, "reset", 5) == 0) {
86 if (local->ops->reset_tsf) {
Johannes Berg24487982009-04-23 18:52:52 +020087 drv_reset_tsf(local);
Alina Friedrichsen3b5d6652009-01-24 07:09:59 +010088 printk(KERN_INFO "%s: debugfs reset TSF\n", wiphy_name(local->hw.wiphy));
89 }
90 } else {
91 tsf = simple_strtoul(buf, NULL, 0);
92 if (local->ops->set_tsf) {
Johannes Berg24487982009-04-23 18:52:52 +020093 drv_set_tsf(local, tsf);
Alina Friedrichsen3b5d6652009-01-24 07:09:59 +010094 printk(KERN_INFO "%s: debugfs set TSF to %#018llx\n", wiphy_name(local->hw.wiphy), tsf);
95 }
96 }
97
98 return count;
99}
100
101static const struct file_operations tsf_ops = {
102 .read = tsf_read,
103 .write = tsf_write,
104 .open = mac80211_open_file_generic
105};
Jiri Bence9f207f2007-05-05 11:46:38 -0700106
Johannes Berg827b1fb2009-03-13 11:44:18 +0100107static ssize_t reset_write(struct file *file, const char __user *user_buf,
108 size_t count, loff_t *ppos)
109{
110 struct ieee80211_local *local = file->private_data;
111
112 rtnl_lock();
113 __ieee80211_suspend(&local->hw);
114 __ieee80211_resume(&local->hw);
115 rtnl_unlock();
116
117 return count;
118}
119
120static const struct file_operations reset_ops = {
121 .write = reset_write,
122 .open = mac80211_open_file_generic,
123};
124
Johannes Bergd3707d92009-05-12 22:05:40 +0200125static ssize_t noack_read(struct file *file, char __user *user_buf,
126 size_t count, loff_t *ppos)
127{
128 struct ieee80211_local *local = file->private_data;
129 int res;
130 char buf[10];
131
132 res = scnprintf(buf, sizeof(buf), "%d\n", local->wifi_wme_noack_test);
133
134 return simple_read_from_buffer(user_buf, count, ppos, buf, res);
135}
136
137static ssize_t noack_write(struct file *file,
138 const char __user *user_buf,
139 size_t count, loff_t *ppos)
140{
141 struct ieee80211_local *local = file->private_data;
142 char buf[10];
143 size_t len;
144
145 len = min(count, sizeof(buf) - 1);
146 if (copy_from_user(buf, user_buf, len))
147 return -EFAULT;
148 buf[len] = '\0';
149
150 local->wifi_wme_noack_test = !!simple_strtoul(buf, NULL, 0);
151
152 return count;
153}
154
155static const struct file_operations noack_ops = {
156 .read = noack_read,
157 .write = noack_write,
158 .open = mac80211_open_file_generic
159};
160
Kalle Valo50ae0cf2010-01-12 10:42:39 +0200161static ssize_t uapsd_queues_read(struct file *file, char __user *user_buf,
162 size_t count, loff_t *ppos)
163{
164 struct ieee80211_local *local = file->private_data;
165 int res;
166 char buf[10];
167
168 res = scnprintf(buf, sizeof(buf), "0x%x\n", local->uapsd_queues);
169
170 return simple_read_from_buffer(user_buf, count, ppos, buf, res);
171}
172
173static ssize_t uapsd_queues_write(struct file *file,
174 const char __user *user_buf,
175 size_t count, loff_t *ppos)
176{
177 struct ieee80211_local *local = file->private_data;
178 unsigned long val;
179 char buf[10];
180 size_t len;
181 int ret;
182
183 len = min(count, sizeof(buf) - 1);
184 if (copy_from_user(buf, user_buf, len))
185 return -EFAULT;
186 buf[len] = '\0';
187
188 ret = strict_strtoul(buf, 0, &val);
189
190 if (ret)
191 return -EINVAL;
192
193 if (val & ~IEEE80211_WMM_IE_STA_QOSINFO_AC_MASK)
194 return -ERANGE;
195
196 local->uapsd_queues = val;
197
198 return count;
199}
200
201static const struct file_operations uapsd_queues_ops = {
202 .read = uapsd_queues_read,
203 .write = uapsd_queues_write,
204 .open = mac80211_open_file_generic
205};
206
207static ssize_t uapsd_max_sp_len_read(struct file *file, char __user *user_buf,
208 size_t count, loff_t *ppos)
209{
210 struct ieee80211_local *local = file->private_data;
211 int res;
212 char buf[10];
213
214 res = scnprintf(buf, sizeof(buf), "0x%x\n", local->uapsd_max_sp_len);
215
216 return simple_read_from_buffer(user_buf, count, ppos, buf, res);
217}
218
219static ssize_t uapsd_max_sp_len_write(struct file *file,
220 const char __user *user_buf,
221 size_t count, loff_t *ppos)
222{
223 struct ieee80211_local *local = file->private_data;
224 unsigned long val;
225 char buf[10];
226 size_t len;
227 int ret;
228
229 len = min(count, sizeof(buf) - 1);
230 if (copy_from_user(buf, user_buf, len))
231 return -EFAULT;
232 buf[len] = '\0';
233
234 ret = strict_strtoul(buf, 0, &val);
235
236 if (ret)
237 return -EINVAL;
238
239 if (val & ~IEEE80211_WMM_IE_STA_QOSINFO_SP_MASK)
240 return -ERANGE;
241
242 local->uapsd_max_sp_len = val;
243
244 return count;
245}
246
247static const struct file_operations uapsd_max_sp_len_ops = {
248 .read = uapsd_max_sp_len_read,
249 .write = uapsd_max_sp_len_write,
250 .open = mac80211_open_file_generic
251};
252
Benoit Papillault199d69f2010-02-04 22:00:20 +0100253static ssize_t channel_type_read(struct file *file, char __user *user_buf,
254 size_t count, loff_t *ppos)
255{
256 struct ieee80211_local *local = file->private_data;
257 const char *buf;
258
259 switch (local->hw.conf.channel_type) {
260 case NL80211_CHAN_NO_HT:
261 buf = "no ht\n";
262 break;
263 case NL80211_CHAN_HT20:
264 buf = "ht20\n";
265 break;
266 case NL80211_CHAN_HT40MINUS:
267 buf = "ht40-\n";
268 break;
269 case NL80211_CHAN_HT40PLUS:
270 buf = "ht40+\n";
271 break;
272 default:
273 buf = "???";
274 break;
275 }
276
277 return simple_read_from_buffer(user_buf, count, ppos, buf, strlen(buf));
278}
279
280static const struct file_operations channel_type_ops = {
281 .read = channel_type_read,
282 .open = mac80211_open_file_generic
283};
284
Johannes Bergdb2e6bd2009-06-14 17:37:39 +0200285static ssize_t queues_read(struct file *file, char __user *user_buf,
286 size_t count, loff_t *ppos)
287{
288 struct ieee80211_local *local = file->private_data;
289 unsigned long flags;
290 char buf[IEEE80211_MAX_QUEUES * 20];
291 int q, res = 0;
292
293 spin_lock_irqsave(&local->queue_stop_reason_lock, flags);
294 for (q = 0; q < local->hw.queues; q++)
295 res += sprintf(buf + res, "%02d: %#.8lx/%d\n", q,
296 local->queue_stop_reasons[q],
Johannes Berg3b8d81e02009-06-17 17:43:56 +0200297 skb_queue_len(&local->pending[q]));
Johannes Bergdb2e6bd2009-06-14 17:37:39 +0200298 spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags);
299
300 return simple_read_from_buffer(user_buf, count, ppos, buf, res);
301}
302
303static const struct file_operations queues_ops = {
304 .read = queues_read,
305 .open = mac80211_open_file_generic
306};
307
Jiri Bence9f207f2007-05-05 11:46:38 -0700308/* statistics stuff */
309
Jiri Bence9f207f2007-05-05 11:46:38 -0700310static ssize_t format_devstat_counter(struct ieee80211_local *local,
311 char __user *userbuf,
312 size_t count, loff_t *ppos,
313 int (*printvalue)(struct ieee80211_low_level_stats *stats, char *buf,
314 int buflen))
315{
316 struct ieee80211_low_level_stats stats;
317 char buf[20];
318 int res;
319
Johannes Berg75636522008-07-09 14:40:35 +0200320 rtnl_lock();
Johannes Berg24487982009-04-23 18:52:52 +0200321 res = drv_get_stats(local, &stats);
Jiri Bence9f207f2007-05-05 11:46:38 -0700322 rtnl_unlock();
Johannes Berg24487982009-04-23 18:52:52 +0200323 if (res)
324 return res;
325 res = printvalue(&stats, buf, sizeof(buf));
Jiri Bence9f207f2007-05-05 11:46:38 -0700326 return simple_read_from_buffer(userbuf, count, ppos, buf, res);
327}
328
329#define DEBUGFS_DEVSTATS_FILE(name) \
330static int print_devstats_##name(struct ieee80211_low_level_stats *stats,\
331 char *buf, int buflen) \
332{ \
333 return scnprintf(buf, buflen, "%u\n", stats->name); \
334} \
335static ssize_t stats_ ##name## _read(struct file *file, \
336 char __user *userbuf, \
337 size_t count, loff_t *ppos) \
338{ \
339 return format_devstat_counter(file->private_data, \
340 userbuf, \
341 count, \
342 ppos, \
343 print_devstats_##name); \
344} \
345 \
346static const struct file_operations stats_ ##name## _ops = { \
347 .read = stats_ ##name## _read, \
348 .open = mac80211_open_file_generic, \
349};
350
Felix Fietkau2826bcd2010-06-02 02:57:34 +0200351#define DEBUGFS_STATS_ADD(name, field) \
352 debugfs_create_u32(#name, 0400, statsd, (u32 *) &field);
353#define DEBUGFS_DEVSTATS_ADD(name) \
Johannes Berg7bcfaf22009-10-27 12:59:03 +0100354 debugfs_create_file(#name, 0400, statsd, local, &stats_ ##name## _ops);
Jiri Bence9f207f2007-05-05 11:46:38 -0700355
Jiri Bence9f207f2007-05-05 11:46:38 -0700356DEBUGFS_DEVSTATS_FILE(dot11ACKFailureCount);
357DEBUGFS_DEVSTATS_FILE(dot11RTSFailureCount);
358DEBUGFS_DEVSTATS_FILE(dot11FCSErrorCount);
359DEBUGFS_DEVSTATS_FILE(dot11RTSSuccessCount);
360
Jiri Bence9f207f2007-05-05 11:46:38 -0700361void debugfs_hw_add(struct ieee80211_local *local)
362{
363 struct dentry *phyd = local->hw.wiphy->debugfsdir;
364 struct dentry *statsd;
365
366 if (!phyd)
367 return;
368
369 local->debugfs.stations = debugfs_create_dir("stations", phyd);
370 local->debugfs.keys = debugfs_create_dir("keys", phyd);
371
Jiri Bence9f207f2007-05-05 11:46:38 -0700372 DEBUGFS_ADD(frequency);
Jiri Bence9f207f2007-05-05 11:46:38 -0700373 DEBUGFS_ADD(total_ps_buffered);
Jiri Bence9f207f2007-05-05 11:46:38 -0700374 DEBUGFS_ADD(wep_iv);
Alina Friedrichsenae54c982009-01-23 05:33:37 +0100375 DEBUGFS_ADD(tsf);
Johannes Bergdb2e6bd2009-06-14 17:37:39 +0200376 DEBUGFS_ADD(queues);
Johannes Berg827b1fb2009-03-13 11:44:18 +0100377 DEBUGFS_ADD_MODE(reset, 0200);
Johannes Bergd3707d92009-05-12 22:05:40 +0200378 DEBUGFS_ADD(noack);
Kalle Valo50ae0cf2010-01-12 10:42:39 +0200379 DEBUGFS_ADD(uapsd_queues);
380 DEBUGFS_ADD(uapsd_max_sp_len);
Benoit Papillault199d69f2010-02-04 22:00:20 +0100381 DEBUGFS_ADD(channel_type);
Jiri Bence9f207f2007-05-05 11:46:38 -0700382
383 statsd = debugfs_create_dir("statistics", phyd);
Jiri Bence9f207f2007-05-05 11:46:38 -0700384
385 /* if the dir failed, don't put all the other things into the root! */
386 if (!statsd)
387 return;
388
Felix Fietkau2826bcd2010-06-02 02:57:34 +0200389 DEBUGFS_STATS_ADD(transmitted_fragment_count,
390 local->dot11TransmittedFragmentCount);
391 DEBUGFS_STATS_ADD(multicast_transmitted_frame_count,
392 local->dot11MulticastTransmittedFrameCount);
393 DEBUGFS_STATS_ADD(failed_count, local->dot11FailedCount);
394 DEBUGFS_STATS_ADD(retry_count, local->dot11RetryCount);
395 DEBUGFS_STATS_ADD(multiple_retry_count,
396 local->dot11MultipleRetryCount);
397 DEBUGFS_STATS_ADD(frame_duplicate_count,
398 local->dot11FrameDuplicateCount);
399 DEBUGFS_STATS_ADD(received_fragment_count,
400 local->dot11ReceivedFragmentCount);
401 DEBUGFS_STATS_ADD(multicast_received_frame_count,
402 local->dot11MulticastReceivedFrameCount);
403 DEBUGFS_STATS_ADD(transmitted_frame_count,
404 local->dot11TransmittedFrameCount);
Jiri Bence9f207f2007-05-05 11:46:38 -0700405#ifdef CONFIG_MAC80211_DEBUG_COUNTERS
Felix Fietkau2826bcd2010-06-02 02:57:34 +0200406 DEBUGFS_STATS_ADD(tx_handlers_drop, local->tx_handlers_drop);
407 DEBUGFS_STATS_ADD(tx_handlers_queued, local->tx_handlers_queued);
408 DEBUGFS_STATS_ADD(tx_handlers_drop_unencrypted,
409 local->tx_handlers_drop_unencrypted);
410 DEBUGFS_STATS_ADD(tx_handlers_drop_fragment,
411 local->tx_handlers_drop_fragment);
412 DEBUGFS_STATS_ADD(tx_handlers_drop_wep,
413 local->tx_handlers_drop_wep);
414 DEBUGFS_STATS_ADD(tx_handlers_drop_not_assoc,
415 local->tx_handlers_drop_not_assoc);
416 DEBUGFS_STATS_ADD(tx_handlers_drop_unauth_port,
417 local->tx_handlers_drop_unauth_port);
418 DEBUGFS_STATS_ADD(rx_handlers_drop, local->rx_handlers_drop);
419 DEBUGFS_STATS_ADD(rx_handlers_queued, local->rx_handlers_queued);
420 DEBUGFS_STATS_ADD(rx_handlers_drop_nullfunc,
421 local->rx_handlers_drop_nullfunc);
422 DEBUGFS_STATS_ADD(rx_handlers_drop_defrag,
423 local->rx_handlers_drop_defrag);
424 DEBUGFS_STATS_ADD(rx_handlers_drop_short,
425 local->rx_handlers_drop_short);
426 DEBUGFS_STATS_ADD(rx_handlers_drop_passive_scan,
427 local->rx_handlers_drop_passive_scan);
428 DEBUGFS_STATS_ADD(tx_expand_skb_head,
429 local->tx_expand_skb_head);
430 DEBUGFS_STATS_ADD(tx_expand_skb_head_cloned,
431 local->tx_expand_skb_head_cloned);
432 DEBUGFS_STATS_ADD(rx_expand_skb_head,
433 local->rx_expand_skb_head);
434 DEBUGFS_STATS_ADD(rx_expand_skb_head2,
435 local->rx_expand_skb_head2);
436 DEBUGFS_STATS_ADD(rx_handlers_fragments,
437 local->rx_handlers_fragments);
438 DEBUGFS_STATS_ADD(tx_status_drop,
439 local->tx_status_drop);
Jiri Bence9f207f2007-05-05 11:46:38 -0700440#endif
Felix Fietkau2826bcd2010-06-02 02:57:34 +0200441 DEBUGFS_DEVSTATS_ADD(dot11ACKFailureCount);
442 DEBUGFS_DEVSTATS_ADD(dot11RTSFailureCount);
443 DEBUGFS_DEVSTATS_ADD(dot11FCSErrorCount);
444 DEBUGFS_DEVSTATS_ADD(dot11RTSSuccessCount);
Jiri Bence9f207f2007-05-05 11:46:38 -0700445}