Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc-2.6
[linux-2.6.git] / net / mac80211 / debugfs.c
1
2 /*
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"
14 #include "driver-ops.h"
15 #include "rate.h"
16 #include "debugfs.h"
17
18 int mac80211_open_file_generic(struct inode *inode, struct file *file)
19 {
20         file->private_data = inode->i_private;
21         return 0;
22 }
23
24 #define DEBUGFS_READONLY_FILE(name, buflen, fmt, value...)              \
25 static 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                                                                         \
36 static const struct file_operations name## _ops = {                     \
37         .read = name## _read,                                           \
38         .open = mac80211_open_file_generic,                             \
39 };
40
41 #define DEBUGFS_ADD(name)                                               \
42         debugfs_create_file(#name, 0400, phyd, local, &name## _ops);
43
44 #define DEBUGFS_ADD_MODE(name, mode)                                    \
45         debugfs_create_file(#name, mode, phyd, local, &name## _ops);
46
47
48 DEBUGFS_READONLY_FILE(frequency, 20, "%d",
49                       local->hw.conf.channel->center_freq);
50 DEBUGFS_READONLY_FILE(total_ps_buffered, 20, "%d",
51                       local->total_ps_buffered);
52 DEBUGFS_READONLY_FILE(wep_iv, 20, "%#08x",
53                       local->wep_iv & 0xffffff);
54 DEBUGFS_READONLY_FILE(rate_ctrl_alg, 100, "%s",
55         local->rate_ctrl ? local->rate_ctrl->ops->name : "hw/driver");
56
57 static 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;
61         u64 tsf;
62         char buf[100];
63
64         tsf = drv_get_tsf(local);
65
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
71 static 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) {
87                         drv_reset_tsf(local);
88                         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) {
93                         drv_set_tsf(local, tsf);
94                         printk(KERN_INFO "%s: debugfs set TSF to %#018llx\n", wiphy_name(local->hw.wiphy), tsf);
95                 }
96         }
97
98         return count;
99 }
100
101 static const struct file_operations tsf_ops = {
102         .read = tsf_read,
103         .write = tsf_write,
104         .open = mac80211_open_file_generic
105 };
106
107 static 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
120 static const struct file_operations reset_ops = {
121         .write = reset_write,
122         .open = mac80211_open_file_generic,
123 };
124
125 static 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
137 static 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
155 static const struct file_operations noack_ops = {
156         .read = noack_read,
157         .write = noack_write,
158         .open = mac80211_open_file_generic
159 };
160
161 static 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
173 static 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
201 static 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
207 static 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
219 static 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
247 static 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
253 static 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
280 static const struct file_operations channel_type_ops = {
281         .read = channel_type_read,
282         .open = mac80211_open_file_generic
283 };
284
285 static 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],
297                                 skb_queue_len(&local->pending[q]));
298         spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags);
299
300         return simple_read_from_buffer(user_buf, count, ppos, buf, res);
301 }
302
303 static const struct file_operations queues_ops = {
304         .read = queues_read,
305         .open = mac80211_open_file_generic
306 };
307
308 /* statistics stuff */
309
310 #define DEBUGFS_STATS_FILE(name, buflen, fmt, value...)                 \
311         DEBUGFS_READONLY_FILE(stats_ ##name, buflen, fmt, ##value)
312
313 static ssize_t format_devstat_counter(struct ieee80211_local *local,
314         char __user *userbuf,
315         size_t count, loff_t *ppos,
316         int (*printvalue)(struct ieee80211_low_level_stats *stats, char *buf,
317                           int buflen))
318 {
319         struct ieee80211_low_level_stats stats;
320         char buf[20];
321         int res;
322
323         rtnl_lock();
324         res = drv_get_stats(local, &stats);
325         rtnl_unlock();
326         if (res)
327                 return res;
328         res = printvalue(&stats, buf, sizeof(buf));
329         return simple_read_from_buffer(userbuf, count, ppos, buf, res);
330 }
331
332 #define DEBUGFS_DEVSTATS_FILE(name)                                     \
333 static int print_devstats_##name(struct ieee80211_low_level_stats *stats,\
334                                  char *buf, int buflen)                 \
335 {                                                                       \
336         return scnprintf(buf, buflen, "%u\n", stats->name);             \
337 }                                                                       \
338 static ssize_t stats_ ##name## _read(struct file *file,                 \
339                                      char __user *userbuf,              \
340                                      size_t count, loff_t *ppos)        \
341 {                                                                       \
342         return format_devstat_counter(file->private_data,               \
343                                       userbuf,                          \
344                                       count,                            \
345                                       ppos,                             \
346                                       print_devstats_##name);           \
347 }                                                                       \
348                                                                         \
349 static const struct file_operations stats_ ##name## _ops = {            \
350         .read = stats_ ##name## _read,                                  \
351         .open = mac80211_open_file_generic,                             \
352 };
353
354 #define DEBUGFS_STATS_ADD(name)                                         \
355         debugfs_create_file(#name, 0400, statsd, local, &stats_ ##name## _ops);
356
357 DEBUGFS_STATS_FILE(transmitted_fragment_count, 20, "%u",
358                    local->dot11TransmittedFragmentCount);
359 DEBUGFS_STATS_FILE(multicast_transmitted_frame_count, 20, "%u",
360                    local->dot11MulticastTransmittedFrameCount);
361 DEBUGFS_STATS_FILE(failed_count, 20, "%u",
362                    local->dot11FailedCount);
363 DEBUGFS_STATS_FILE(retry_count, 20, "%u",
364                    local->dot11RetryCount);
365 DEBUGFS_STATS_FILE(multiple_retry_count, 20, "%u",
366                    local->dot11MultipleRetryCount);
367 DEBUGFS_STATS_FILE(frame_duplicate_count, 20, "%u",
368                    local->dot11FrameDuplicateCount);
369 DEBUGFS_STATS_FILE(received_fragment_count, 20, "%u",
370                    local->dot11ReceivedFragmentCount);
371 DEBUGFS_STATS_FILE(multicast_received_frame_count, 20, "%u",
372                    local->dot11MulticastReceivedFrameCount);
373 DEBUGFS_STATS_FILE(transmitted_frame_count, 20, "%u",
374                    local->dot11TransmittedFrameCount);
375 #ifdef CONFIG_MAC80211_DEBUG_COUNTERS
376 DEBUGFS_STATS_FILE(tx_handlers_drop, 20, "%u",
377                    local->tx_handlers_drop);
378 DEBUGFS_STATS_FILE(tx_handlers_queued, 20, "%u",
379                    local->tx_handlers_queued);
380 DEBUGFS_STATS_FILE(tx_handlers_drop_unencrypted, 20, "%u",
381                    local->tx_handlers_drop_unencrypted);
382 DEBUGFS_STATS_FILE(tx_handlers_drop_fragment, 20, "%u",
383                    local->tx_handlers_drop_fragment);
384 DEBUGFS_STATS_FILE(tx_handlers_drop_wep, 20, "%u",
385                    local->tx_handlers_drop_wep);
386 DEBUGFS_STATS_FILE(tx_handlers_drop_not_assoc, 20, "%u",
387                    local->tx_handlers_drop_not_assoc);
388 DEBUGFS_STATS_FILE(tx_handlers_drop_unauth_port, 20, "%u",
389                    local->tx_handlers_drop_unauth_port);
390 DEBUGFS_STATS_FILE(rx_handlers_drop, 20, "%u",
391                    local->rx_handlers_drop);
392 DEBUGFS_STATS_FILE(rx_handlers_queued, 20, "%u",
393                    local->rx_handlers_queued);
394 DEBUGFS_STATS_FILE(rx_handlers_drop_nullfunc, 20, "%u",
395                    local->rx_handlers_drop_nullfunc);
396 DEBUGFS_STATS_FILE(rx_handlers_drop_defrag, 20, "%u",
397                    local->rx_handlers_drop_defrag);
398 DEBUGFS_STATS_FILE(rx_handlers_drop_short, 20, "%u",
399                    local->rx_handlers_drop_short);
400 DEBUGFS_STATS_FILE(rx_handlers_drop_passive_scan, 20, "%u",
401                    local->rx_handlers_drop_passive_scan);
402 DEBUGFS_STATS_FILE(tx_expand_skb_head, 20, "%u",
403                    local->tx_expand_skb_head);
404 DEBUGFS_STATS_FILE(tx_expand_skb_head_cloned, 20, "%u",
405                    local->tx_expand_skb_head_cloned);
406 DEBUGFS_STATS_FILE(rx_expand_skb_head, 20, "%u",
407                    local->rx_expand_skb_head);
408 DEBUGFS_STATS_FILE(rx_expand_skb_head2, 20, "%u",
409                    local->rx_expand_skb_head2);
410 DEBUGFS_STATS_FILE(rx_handlers_fragments, 20, "%u",
411                    local->rx_handlers_fragments);
412 DEBUGFS_STATS_FILE(tx_status_drop, 20, "%u",
413                    local->tx_status_drop);
414
415 #endif
416
417 DEBUGFS_DEVSTATS_FILE(dot11ACKFailureCount);
418 DEBUGFS_DEVSTATS_FILE(dot11RTSFailureCount);
419 DEBUGFS_DEVSTATS_FILE(dot11FCSErrorCount);
420 DEBUGFS_DEVSTATS_FILE(dot11RTSSuccessCount);
421
422
423 void debugfs_hw_add(struct ieee80211_local *local)
424 {
425         struct dentry *phyd = local->hw.wiphy->debugfsdir;
426         struct dentry *statsd;
427
428         if (!phyd)
429                 return;
430
431         local->debugfs.stations = debugfs_create_dir("stations", phyd);
432         local->debugfs.keys = debugfs_create_dir("keys", phyd);
433
434         DEBUGFS_ADD(frequency);
435         DEBUGFS_ADD(total_ps_buffered);
436         DEBUGFS_ADD(wep_iv);
437         DEBUGFS_ADD(tsf);
438         DEBUGFS_ADD(queues);
439         DEBUGFS_ADD_MODE(reset, 0200);
440         DEBUGFS_ADD(noack);
441         DEBUGFS_ADD(uapsd_queues);
442         DEBUGFS_ADD(uapsd_max_sp_len);
443         DEBUGFS_ADD(channel_type);
444
445         statsd = debugfs_create_dir("statistics", phyd);
446
447         /* if the dir failed, don't put all the other things into the root! */
448         if (!statsd)
449                 return;
450
451         DEBUGFS_STATS_ADD(transmitted_fragment_count);
452         DEBUGFS_STATS_ADD(multicast_transmitted_frame_count);
453         DEBUGFS_STATS_ADD(failed_count);
454         DEBUGFS_STATS_ADD(retry_count);
455         DEBUGFS_STATS_ADD(multiple_retry_count);
456         DEBUGFS_STATS_ADD(frame_duplicate_count);
457         DEBUGFS_STATS_ADD(received_fragment_count);
458         DEBUGFS_STATS_ADD(multicast_received_frame_count);
459         DEBUGFS_STATS_ADD(transmitted_frame_count);
460 #ifdef CONFIG_MAC80211_DEBUG_COUNTERS
461         DEBUGFS_STATS_ADD(tx_handlers_drop);
462         DEBUGFS_STATS_ADD(tx_handlers_queued);
463         DEBUGFS_STATS_ADD(tx_handlers_drop_unencrypted);
464         DEBUGFS_STATS_ADD(tx_handlers_drop_fragment);
465         DEBUGFS_STATS_ADD(tx_handlers_drop_wep);
466         DEBUGFS_STATS_ADD(tx_handlers_drop_not_assoc);
467         DEBUGFS_STATS_ADD(tx_handlers_drop_unauth_port);
468         DEBUGFS_STATS_ADD(rx_handlers_drop);
469         DEBUGFS_STATS_ADD(rx_handlers_queued);
470         DEBUGFS_STATS_ADD(rx_handlers_drop_nullfunc);
471         DEBUGFS_STATS_ADD(rx_handlers_drop_defrag);
472         DEBUGFS_STATS_ADD(rx_handlers_drop_short);
473         DEBUGFS_STATS_ADD(rx_handlers_drop_passive_scan);
474         DEBUGFS_STATS_ADD(tx_expand_skb_head);
475         DEBUGFS_STATS_ADD(tx_expand_skb_head_cloned);
476         DEBUGFS_STATS_ADD(rx_expand_skb_head);
477         DEBUGFS_STATS_ADD(rx_expand_skb_head2);
478         DEBUGFS_STATS_ADD(rx_handlers_fragments);
479         DEBUGFS_STATS_ADD(tx_status_drop);
480 #endif
481         DEBUGFS_STATS_ADD(dot11ACKFailureCount);
482         DEBUGFS_STATS_ADD(dot11RTSFailureCount);
483         DEBUGFS_STATS_ADD(dot11FCSErrorCount);
484         DEBUGFS_STATS_ADD(dot11RTSSuccessCount);
485 }