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Commit | Line | Data |
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7bcfaf2f | 1 | |
e9f207f0 JB |
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" | |
24487981 | 14 | #include "driver-ops.h" |
2c8dccc7 | 15 | #include "rate.h" |
e9f207f0 JB |
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 | ||
e9f207f0 JB |
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) \ | |
7bcfaf2f | 42 | debugfs_create_file(#name, 0400, phyd, local, &name## _ops); |
e9f207f0 | 43 | |
827b1fb4 | 44 | #define DEBUGFS_ADD_MODE(name, mode) \ |
7bcfaf2f | 45 | debugfs_create_file(#name, mode, phyd, local, &name## _ops); |
e9f207f0 JB |
46 | |
47 | ||
e9f207f0 | 48 | DEBUGFS_READONLY_FILE(frequency, 20, "%d", |
8318d78a | 49 | local->hw.conf.channel->center_freq); |
e9f207f0 JB |
50 | DEBUGFS_READONLY_FILE(total_ps_buffered, 20, "%d", |
51 | local->total_ps_buffered); | |
3b5d665b | 52 | DEBUGFS_READONLY_FILE(wep_iv, 20, "%#08x", |
e9f207f0 | 53 | local->wep_iv & 0xffffff); |
e9f207f0 | 54 | DEBUGFS_READONLY_FILE(rate_ctrl_alg, 100, "%s", |
af65cd96 | 55 | local->rate_ctrl ? local->rate_ctrl->ops->name : "hw/driver"); |
3b5d665b AF |
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; | |
24487981 | 61 | u64 tsf; |
3b5d665b AF |
62 | char buf[100]; |
63 | ||
24487981 | 64 | tsf = drv_get_tsf(local); |
3b5d665b AF |
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) { | |
24487981 | 87 | drv_reset_tsf(local); |
3b5d665b AF |
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) { | |
24487981 | 93 | drv_set_tsf(local, tsf); |
3b5d665b AF |
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 | }; | |
e9f207f0 | 106 | |
827b1fb4 JB |
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 | ||
d3707d99 JB |
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 | ||
50ae0cf1 KV |
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 | ||
db2e6bd4 JB |
253 | static ssize_t queues_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 | unsigned long flags; | |
258 | char buf[IEEE80211_MAX_QUEUES * 20]; | |
259 | int q, res = 0; | |
260 | ||
261 | spin_lock_irqsave(&local->queue_stop_reason_lock, flags); | |
262 | for (q = 0; q < local->hw.queues; q++) | |
263 | res += sprintf(buf + res, "%02d: %#.8lx/%d\n", q, | |
264 | local->queue_stop_reasons[q], | |
3b8d81e0 | 265 | skb_queue_len(&local->pending[q])); |
db2e6bd4 JB |
266 | spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags); |
267 | ||
268 | return simple_read_from_buffer(user_buf, count, ppos, buf, res); | |
269 | } | |
270 | ||
271 | static const struct file_operations queues_ops = { | |
272 | .read = queues_read, | |
273 | .open = mac80211_open_file_generic | |
274 | }; | |
275 | ||
e9f207f0 JB |
276 | /* statistics stuff */ |
277 | ||
e9f207f0 JB |
278 | #define DEBUGFS_STATS_FILE(name, buflen, fmt, value...) \ |
279 | DEBUGFS_READONLY_FILE(stats_ ##name, buflen, fmt, ##value) | |
280 | ||
281 | static ssize_t format_devstat_counter(struct ieee80211_local *local, | |
282 | char __user *userbuf, | |
283 | size_t count, loff_t *ppos, | |
284 | int (*printvalue)(struct ieee80211_low_level_stats *stats, char *buf, | |
285 | int buflen)) | |
286 | { | |
287 | struct ieee80211_low_level_stats stats; | |
288 | char buf[20]; | |
289 | int res; | |
290 | ||
75636525 | 291 | rtnl_lock(); |
24487981 | 292 | res = drv_get_stats(local, &stats); |
e9f207f0 | 293 | rtnl_unlock(); |
24487981 JB |
294 | if (res) |
295 | return res; | |
296 | res = printvalue(&stats, buf, sizeof(buf)); | |
e9f207f0 JB |
297 | return simple_read_from_buffer(userbuf, count, ppos, buf, res); |
298 | } | |
299 | ||
300 | #define DEBUGFS_DEVSTATS_FILE(name) \ | |
301 | static int print_devstats_##name(struct ieee80211_low_level_stats *stats,\ | |
302 | char *buf, int buflen) \ | |
303 | { \ | |
304 | return scnprintf(buf, buflen, "%u\n", stats->name); \ | |
305 | } \ | |
306 | static ssize_t stats_ ##name## _read(struct file *file, \ | |
307 | char __user *userbuf, \ | |
308 | size_t count, loff_t *ppos) \ | |
309 | { \ | |
310 | return format_devstat_counter(file->private_data, \ | |
311 | userbuf, \ | |
312 | count, \ | |
313 | ppos, \ | |
314 | print_devstats_##name); \ | |
315 | } \ | |
316 | \ | |
317 | static const struct file_operations stats_ ##name## _ops = { \ | |
318 | .read = stats_ ##name## _read, \ | |
319 | .open = mac80211_open_file_generic, \ | |
320 | }; | |
321 | ||
322 | #define DEBUGFS_STATS_ADD(name) \ | |
7bcfaf2f | 323 | debugfs_create_file(#name, 0400, statsd, local, &stats_ ##name## _ops); |
e9f207f0 JB |
324 | |
325 | DEBUGFS_STATS_FILE(transmitted_fragment_count, 20, "%u", | |
326 | local->dot11TransmittedFragmentCount); | |
327 | DEBUGFS_STATS_FILE(multicast_transmitted_frame_count, 20, "%u", | |
328 | local->dot11MulticastTransmittedFrameCount); | |
329 | DEBUGFS_STATS_FILE(failed_count, 20, "%u", | |
330 | local->dot11FailedCount); | |
331 | DEBUGFS_STATS_FILE(retry_count, 20, "%u", | |
332 | local->dot11RetryCount); | |
333 | DEBUGFS_STATS_FILE(multiple_retry_count, 20, "%u", | |
334 | local->dot11MultipleRetryCount); | |
335 | DEBUGFS_STATS_FILE(frame_duplicate_count, 20, "%u", | |
336 | local->dot11FrameDuplicateCount); | |
337 | DEBUGFS_STATS_FILE(received_fragment_count, 20, "%u", | |
338 | local->dot11ReceivedFragmentCount); | |
339 | DEBUGFS_STATS_FILE(multicast_received_frame_count, 20, "%u", | |
340 | local->dot11MulticastReceivedFrameCount); | |
341 | DEBUGFS_STATS_FILE(transmitted_frame_count, 20, "%u", | |
342 | local->dot11TransmittedFrameCount); | |
e9f207f0 JB |
343 | #ifdef CONFIG_MAC80211_DEBUG_COUNTERS |
344 | DEBUGFS_STATS_FILE(tx_handlers_drop, 20, "%u", | |
345 | local->tx_handlers_drop); | |
346 | DEBUGFS_STATS_FILE(tx_handlers_queued, 20, "%u", | |
347 | local->tx_handlers_queued); | |
348 | DEBUGFS_STATS_FILE(tx_handlers_drop_unencrypted, 20, "%u", | |
349 | local->tx_handlers_drop_unencrypted); | |
350 | DEBUGFS_STATS_FILE(tx_handlers_drop_fragment, 20, "%u", | |
351 | local->tx_handlers_drop_fragment); | |
352 | DEBUGFS_STATS_FILE(tx_handlers_drop_wep, 20, "%u", | |
353 | local->tx_handlers_drop_wep); | |
354 | DEBUGFS_STATS_FILE(tx_handlers_drop_not_assoc, 20, "%u", | |
355 | local->tx_handlers_drop_not_assoc); | |
356 | DEBUGFS_STATS_FILE(tx_handlers_drop_unauth_port, 20, "%u", | |
357 | local->tx_handlers_drop_unauth_port); | |
358 | DEBUGFS_STATS_FILE(rx_handlers_drop, 20, "%u", | |
359 | local->rx_handlers_drop); | |
360 | DEBUGFS_STATS_FILE(rx_handlers_queued, 20, "%u", | |
361 | local->rx_handlers_queued); | |
362 | DEBUGFS_STATS_FILE(rx_handlers_drop_nullfunc, 20, "%u", | |
363 | local->rx_handlers_drop_nullfunc); | |
364 | DEBUGFS_STATS_FILE(rx_handlers_drop_defrag, 20, "%u", | |
365 | local->rx_handlers_drop_defrag); | |
366 | DEBUGFS_STATS_FILE(rx_handlers_drop_short, 20, "%u", | |
367 | local->rx_handlers_drop_short); | |
368 | DEBUGFS_STATS_FILE(rx_handlers_drop_passive_scan, 20, "%u", | |
369 | local->rx_handlers_drop_passive_scan); | |
370 | DEBUGFS_STATS_FILE(tx_expand_skb_head, 20, "%u", | |
371 | local->tx_expand_skb_head); | |
372 | DEBUGFS_STATS_FILE(tx_expand_skb_head_cloned, 20, "%u", | |
373 | local->tx_expand_skb_head_cloned); | |
374 | DEBUGFS_STATS_FILE(rx_expand_skb_head, 20, "%u", | |
375 | local->rx_expand_skb_head); | |
376 | DEBUGFS_STATS_FILE(rx_expand_skb_head2, 20, "%u", | |
377 | local->rx_expand_skb_head2); | |
378 | DEBUGFS_STATS_FILE(rx_handlers_fragments, 20, "%u", | |
379 | local->rx_handlers_fragments); | |
380 | DEBUGFS_STATS_FILE(tx_status_drop, 20, "%u", | |
381 | local->tx_status_drop); | |
382 | ||
e9f207f0 JB |
383 | #endif |
384 | ||
385 | DEBUGFS_DEVSTATS_FILE(dot11ACKFailureCount); | |
386 | DEBUGFS_DEVSTATS_FILE(dot11RTSFailureCount); | |
387 | DEBUGFS_DEVSTATS_FILE(dot11FCSErrorCount); | |
388 | DEBUGFS_DEVSTATS_FILE(dot11RTSSuccessCount); | |
389 | ||
390 | ||
391 | void debugfs_hw_add(struct ieee80211_local *local) | |
392 | { | |
393 | struct dentry *phyd = local->hw.wiphy->debugfsdir; | |
394 | struct dentry *statsd; | |
395 | ||
396 | if (!phyd) | |
397 | return; | |
398 | ||
399 | local->debugfs.stations = debugfs_create_dir("stations", phyd); | |
400 | local->debugfs.keys = debugfs_create_dir("keys", phyd); | |
401 | ||
e9f207f0 | 402 | DEBUGFS_ADD(frequency); |
e9f207f0 | 403 | DEBUGFS_ADD(total_ps_buffered); |
e9f207f0 | 404 | DEBUGFS_ADD(wep_iv); |
ae54c985 | 405 | DEBUGFS_ADD(tsf); |
db2e6bd4 | 406 | DEBUGFS_ADD(queues); |
827b1fb4 | 407 | DEBUGFS_ADD_MODE(reset, 0200); |
d3707d99 | 408 | DEBUGFS_ADD(noack); |
50ae0cf1 KV |
409 | DEBUGFS_ADD(uapsd_queues); |
410 | DEBUGFS_ADD(uapsd_max_sp_len); | |
e9f207f0 JB |
411 | |
412 | statsd = debugfs_create_dir("statistics", phyd); | |
e9f207f0 JB |
413 | |
414 | /* if the dir failed, don't put all the other things into the root! */ | |
415 | if (!statsd) | |
416 | return; | |
417 | ||
418 | DEBUGFS_STATS_ADD(transmitted_fragment_count); | |
419 | DEBUGFS_STATS_ADD(multicast_transmitted_frame_count); | |
420 | DEBUGFS_STATS_ADD(failed_count); | |
421 | DEBUGFS_STATS_ADD(retry_count); | |
422 | DEBUGFS_STATS_ADD(multiple_retry_count); | |
423 | DEBUGFS_STATS_ADD(frame_duplicate_count); | |
424 | DEBUGFS_STATS_ADD(received_fragment_count); | |
425 | DEBUGFS_STATS_ADD(multicast_received_frame_count); | |
426 | DEBUGFS_STATS_ADD(transmitted_frame_count); | |
e9f207f0 JB |
427 | #ifdef CONFIG_MAC80211_DEBUG_COUNTERS |
428 | DEBUGFS_STATS_ADD(tx_handlers_drop); | |
429 | DEBUGFS_STATS_ADD(tx_handlers_queued); | |
430 | DEBUGFS_STATS_ADD(tx_handlers_drop_unencrypted); | |
431 | DEBUGFS_STATS_ADD(tx_handlers_drop_fragment); | |
432 | DEBUGFS_STATS_ADD(tx_handlers_drop_wep); | |
433 | DEBUGFS_STATS_ADD(tx_handlers_drop_not_assoc); | |
434 | DEBUGFS_STATS_ADD(tx_handlers_drop_unauth_port); | |
435 | DEBUGFS_STATS_ADD(rx_handlers_drop); | |
436 | DEBUGFS_STATS_ADD(rx_handlers_queued); | |
437 | DEBUGFS_STATS_ADD(rx_handlers_drop_nullfunc); | |
438 | DEBUGFS_STATS_ADD(rx_handlers_drop_defrag); | |
439 | DEBUGFS_STATS_ADD(rx_handlers_drop_short); | |
440 | DEBUGFS_STATS_ADD(rx_handlers_drop_passive_scan); | |
441 | DEBUGFS_STATS_ADD(tx_expand_skb_head); | |
442 | DEBUGFS_STATS_ADD(tx_expand_skb_head_cloned); | |
443 | DEBUGFS_STATS_ADD(rx_expand_skb_head); | |
444 | DEBUGFS_STATS_ADD(rx_expand_skb_head2); | |
445 | DEBUGFS_STATS_ADD(rx_handlers_fragments); | |
446 | DEBUGFS_STATS_ADD(tx_status_drop); | |
e9f207f0 JB |
447 | #endif |
448 | DEBUGFS_STATS_ADD(dot11ACKFailureCount); | |
449 | DEBUGFS_STATS_ADD(dot11RTSFailureCount); | |
450 | DEBUGFS_STATS_ADD(dot11FCSErrorCount); | |
451 | DEBUGFS_STATS_ADD(dot11RTSSuccessCount); | |
452 | } |