Commit | Line | Data |
---|---|---|
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, \ | |
2b18ab36 | 39 | .llseek = generic_file_llseek, \ |
e9f207f0 JB |
40 | }; |
41 | ||
42 | #define DEBUGFS_ADD(name) \ | |
7bcfaf2f | 43 | debugfs_create_file(#name, 0400, phyd, local, &name## _ops); |
e9f207f0 | 44 | |
827b1fb4 | 45 | #define DEBUGFS_ADD_MODE(name, mode) \ |
7bcfaf2f | 46 | debugfs_create_file(#name, mode, phyd, local, &name## _ops); |
e9f207f0 JB |
47 | |
48 | ||
e9f207f0 | 49 | DEBUGFS_READONLY_FILE(frequency, 20, "%d", |
8318d78a | 50 | local->hw.conf.channel->center_freq); |
e9f207f0 JB |
51 | DEBUGFS_READONLY_FILE(total_ps_buffered, 20, "%d", |
52 | local->total_ps_buffered); | |
3b5d665b | 53 | DEBUGFS_READONLY_FILE(wep_iv, 20, "%#08x", |
e9f207f0 | 54 | local->wep_iv & 0xffffff); |
e9f207f0 | 55 | DEBUGFS_READONLY_FILE(rate_ctrl_alg, 100, "%s", |
af65cd96 | 56 | local->rate_ctrl ? local->rate_ctrl->ops->name : "hw/driver"); |
3b5d665b AF |
57 | |
58 | static ssize_t tsf_read(struct file *file, char __user *user_buf, | |
59 | size_t count, loff_t *ppos) | |
60 | { | |
61 | struct ieee80211_local *local = file->private_data; | |
24487981 | 62 | u64 tsf; |
3b5d665b AF |
63 | char buf[100]; |
64 | ||
24487981 | 65 | tsf = drv_get_tsf(local); |
3b5d665b AF |
66 | |
67 | snprintf(buf, sizeof(buf), "0x%016llx\n", (unsigned long long) tsf); | |
68 | ||
69 | return simple_read_from_buffer(user_buf, count, ppos, buf, 19); | |
70 | } | |
71 | ||
72 | static ssize_t tsf_write(struct file *file, | |
73 | const char __user *user_buf, | |
74 | size_t count, loff_t *ppos) | |
75 | { | |
76 | struct ieee80211_local *local = file->private_data; | |
77 | unsigned long long tsf; | |
78 | char buf[100]; | |
79 | size_t len; | |
80 | ||
81 | len = min(count, sizeof(buf) - 1); | |
82 | if (copy_from_user(buf, user_buf, len)) | |
83 | return -EFAULT; | |
84 | buf[len] = '\0'; | |
85 | ||
86 | if (strncmp(buf, "reset", 5) == 0) { | |
87 | if (local->ops->reset_tsf) { | |
24487981 | 88 | drv_reset_tsf(local); |
3b5d665b AF |
89 | printk(KERN_INFO "%s: debugfs reset TSF\n", wiphy_name(local->hw.wiphy)); |
90 | } | |
91 | } else { | |
92 | tsf = simple_strtoul(buf, NULL, 0); | |
93 | if (local->ops->set_tsf) { | |
24487981 | 94 | drv_set_tsf(local, tsf); |
3b5d665b AF |
95 | printk(KERN_INFO "%s: debugfs set TSF to %#018llx\n", wiphy_name(local->hw.wiphy), tsf); |
96 | } | |
97 | } | |
98 | ||
99 | return count; | |
100 | } | |
101 | ||
102 | static const struct file_operations tsf_ops = { | |
103 | .read = tsf_read, | |
104 | .write = tsf_write, | |
6038f373 AB |
105 | .open = mac80211_open_file_generic, |
106 | .llseek = default_llseek, | |
3b5d665b | 107 | }; |
e9f207f0 | 108 | |
827b1fb4 JB |
109 | static ssize_t reset_write(struct file *file, const char __user *user_buf, |
110 | size_t count, loff_t *ppos) | |
111 | { | |
112 | struct ieee80211_local *local = file->private_data; | |
113 | ||
114 | rtnl_lock(); | |
115 | __ieee80211_suspend(&local->hw); | |
116 | __ieee80211_resume(&local->hw); | |
117 | rtnl_unlock(); | |
118 | ||
119 | return count; | |
120 | } | |
121 | ||
122 | static const struct file_operations reset_ops = { | |
123 | .write = reset_write, | |
124 | .open = mac80211_open_file_generic, | |
6038f373 | 125 | .llseek = noop_llseek, |
827b1fb4 JB |
126 | }; |
127 | ||
d3707d99 JB |
128 | static ssize_t noack_read(struct file *file, char __user *user_buf, |
129 | size_t count, loff_t *ppos) | |
130 | { | |
131 | struct ieee80211_local *local = file->private_data; | |
132 | int res; | |
133 | char buf[10]; | |
134 | ||
135 | res = scnprintf(buf, sizeof(buf), "%d\n", local->wifi_wme_noack_test); | |
136 | ||
137 | return simple_read_from_buffer(user_buf, count, ppos, buf, res); | |
138 | } | |
139 | ||
140 | static ssize_t noack_write(struct file *file, | |
141 | const char __user *user_buf, | |
142 | size_t count, loff_t *ppos) | |
143 | { | |
144 | struct ieee80211_local *local = file->private_data; | |
145 | char buf[10]; | |
146 | size_t len; | |
147 | ||
148 | len = min(count, sizeof(buf) - 1); | |
149 | if (copy_from_user(buf, user_buf, len)) | |
150 | return -EFAULT; | |
151 | buf[len] = '\0'; | |
152 | ||
153 | local->wifi_wme_noack_test = !!simple_strtoul(buf, NULL, 0); | |
154 | ||
155 | return count; | |
156 | } | |
157 | ||
158 | static const struct file_operations noack_ops = { | |
159 | .read = noack_read, | |
160 | .write = noack_write, | |
6038f373 AB |
161 | .open = mac80211_open_file_generic, |
162 | .llseek = default_llseek, | |
d3707d99 JB |
163 | }; |
164 | ||
50ae0cf1 KV |
165 | static ssize_t uapsd_queues_read(struct file *file, char __user *user_buf, |
166 | size_t count, loff_t *ppos) | |
167 | { | |
168 | struct ieee80211_local *local = file->private_data; | |
169 | int res; | |
170 | char buf[10]; | |
171 | ||
172 | res = scnprintf(buf, sizeof(buf), "0x%x\n", local->uapsd_queues); | |
173 | ||
174 | return simple_read_from_buffer(user_buf, count, ppos, buf, res); | |
175 | } | |
176 | ||
177 | static ssize_t uapsd_queues_write(struct file *file, | |
178 | const char __user *user_buf, | |
179 | size_t count, loff_t *ppos) | |
180 | { | |
181 | struct ieee80211_local *local = file->private_data; | |
182 | unsigned long val; | |
183 | char buf[10]; | |
184 | size_t len; | |
185 | int ret; | |
186 | ||
187 | len = min(count, sizeof(buf) - 1); | |
188 | if (copy_from_user(buf, user_buf, len)) | |
189 | return -EFAULT; | |
190 | buf[len] = '\0'; | |
191 | ||
192 | ret = strict_strtoul(buf, 0, &val); | |
193 | ||
194 | if (ret) | |
195 | return -EINVAL; | |
196 | ||
197 | if (val & ~IEEE80211_WMM_IE_STA_QOSINFO_AC_MASK) | |
198 | return -ERANGE; | |
199 | ||
200 | local->uapsd_queues = val; | |
201 | ||
202 | return count; | |
203 | } | |
204 | ||
205 | static const struct file_operations uapsd_queues_ops = { | |
206 | .read = uapsd_queues_read, | |
207 | .write = uapsd_queues_write, | |
6038f373 AB |
208 | .open = mac80211_open_file_generic, |
209 | .llseek = default_llseek, | |
50ae0cf1 KV |
210 | }; |
211 | ||
212 | static ssize_t uapsd_max_sp_len_read(struct file *file, char __user *user_buf, | |
213 | size_t count, loff_t *ppos) | |
214 | { | |
215 | struct ieee80211_local *local = file->private_data; | |
216 | int res; | |
217 | char buf[10]; | |
218 | ||
219 | res = scnprintf(buf, sizeof(buf), "0x%x\n", local->uapsd_max_sp_len); | |
220 | ||
221 | return simple_read_from_buffer(user_buf, count, ppos, buf, res); | |
222 | } | |
223 | ||
224 | static ssize_t uapsd_max_sp_len_write(struct file *file, | |
225 | const char __user *user_buf, | |
226 | size_t count, loff_t *ppos) | |
227 | { | |
228 | struct ieee80211_local *local = file->private_data; | |
229 | unsigned long val; | |
230 | char buf[10]; | |
231 | size_t len; | |
232 | int ret; | |
233 | ||
234 | len = min(count, sizeof(buf) - 1); | |
235 | if (copy_from_user(buf, user_buf, len)) | |
236 | return -EFAULT; | |
237 | buf[len] = '\0'; | |
238 | ||
239 | ret = strict_strtoul(buf, 0, &val); | |
240 | ||
241 | if (ret) | |
242 | return -EINVAL; | |
243 | ||
244 | if (val & ~IEEE80211_WMM_IE_STA_QOSINFO_SP_MASK) | |
245 | return -ERANGE; | |
246 | ||
247 | local->uapsd_max_sp_len = val; | |
248 | ||
249 | return count; | |
250 | } | |
251 | ||
252 | static const struct file_operations uapsd_max_sp_len_ops = { | |
253 | .read = uapsd_max_sp_len_read, | |
254 | .write = uapsd_max_sp_len_write, | |
6038f373 AB |
255 | .open = mac80211_open_file_generic, |
256 | .llseek = default_llseek, | |
50ae0cf1 KV |
257 | }; |
258 | ||
199d69f2 BP |
259 | static ssize_t channel_type_read(struct file *file, char __user *user_buf, |
260 | size_t count, loff_t *ppos) | |
261 | { | |
262 | struct ieee80211_local *local = file->private_data; | |
263 | const char *buf; | |
264 | ||
265 | switch (local->hw.conf.channel_type) { | |
266 | case NL80211_CHAN_NO_HT: | |
267 | buf = "no ht\n"; | |
268 | break; | |
269 | case NL80211_CHAN_HT20: | |
270 | buf = "ht20\n"; | |
271 | break; | |
272 | case NL80211_CHAN_HT40MINUS: | |
273 | buf = "ht40-\n"; | |
274 | break; | |
275 | case NL80211_CHAN_HT40PLUS: | |
276 | buf = "ht40+\n"; | |
277 | break; | |
278 | default: | |
279 | buf = "???"; | |
280 | break; | |
281 | } | |
282 | ||
283 | return simple_read_from_buffer(user_buf, count, ppos, buf, strlen(buf)); | |
284 | } | |
285 | ||
286 | static const struct file_operations channel_type_ops = { | |
287 | .read = channel_type_read, | |
6038f373 AB |
288 | .open = mac80211_open_file_generic, |
289 | .llseek = default_llseek, | |
199d69f2 BP |
290 | }; |
291 | ||
db2e6bd4 JB |
292 | static ssize_t queues_read(struct file *file, char __user *user_buf, |
293 | size_t count, loff_t *ppos) | |
294 | { | |
295 | struct ieee80211_local *local = file->private_data; | |
296 | unsigned long flags; | |
297 | char buf[IEEE80211_MAX_QUEUES * 20]; | |
298 | int q, res = 0; | |
299 | ||
300 | spin_lock_irqsave(&local->queue_stop_reason_lock, flags); | |
301 | for (q = 0; q < local->hw.queues; q++) | |
302 | res += sprintf(buf + res, "%02d: %#.8lx/%d\n", q, | |
303 | local->queue_stop_reasons[q], | |
3b8d81e0 | 304 | skb_queue_len(&local->pending[q])); |
db2e6bd4 JB |
305 | spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags); |
306 | ||
307 | return simple_read_from_buffer(user_buf, count, ppos, buf, res); | |
308 | } | |
309 | ||
310 | static const struct file_operations queues_ops = { | |
311 | .read = queues_read, | |
6038f373 AB |
312 | .open = mac80211_open_file_generic, |
313 | .llseek = default_llseek, | |
db2e6bd4 JB |
314 | }; |
315 | ||
e9f207f0 JB |
316 | /* statistics stuff */ |
317 | ||
e9f207f0 JB |
318 | static ssize_t format_devstat_counter(struct ieee80211_local *local, |
319 | char __user *userbuf, | |
320 | size_t count, loff_t *ppos, | |
321 | int (*printvalue)(struct ieee80211_low_level_stats *stats, char *buf, | |
322 | int buflen)) | |
323 | { | |
324 | struct ieee80211_low_level_stats stats; | |
325 | char buf[20]; | |
326 | int res; | |
327 | ||
75636525 | 328 | rtnl_lock(); |
24487981 | 329 | res = drv_get_stats(local, &stats); |
e9f207f0 | 330 | rtnl_unlock(); |
24487981 JB |
331 | if (res) |
332 | return res; | |
333 | res = printvalue(&stats, buf, sizeof(buf)); | |
e9f207f0 JB |
334 | return simple_read_from_buffer(userbuf, count, ppos, buf, res); |
335 | } | |
336 | ||
337 | #define DEBUGFS_DEVSTATS_FILE(name) \ | |
338 | static int print_devstats_##name(struct ieee80211_low_level_stats *stats,\ | |
339 | char *buf, int buflen) \ | |
340 | { \ | |
341 | return scnprintf(buf, buflen, "%u\n", stats->name); \ | |
342 | } \ | |
343 | static ssize_t stats_ ##name## _read(struct file *file, \ | |
344 | char __user *userbuf, \ | |
345 | size_t count, loff_t *ppos) \ | |
346 | { \ | |
347 | return format_devstat_counter(file->private_data, \ | |
348 | userbuf, \ | |
349 | count, \ | |
350 | ppos, \ | |
351 | print_devstats_##name); \ | |
352 | } \ | |
353 | \ | |
354 | static const struct file_operations stats_ ##name## _ops = { \ | |
355 | .read = stats_ ##name## _read, \ | |
356 | .open = mac80211_open_file_generic, \ | |
2b18ab36 | 357 | .llseek = generic_file_llseek, \ |
e9f207f0 JB |
358 | }; |
359 | ||
2826bcd8 FF |
360 | #define DEBUGFS_STATS_ADD(name, field) \ |
361 | debugfs_create_u32(#name, 0400, statsd, (u32 *) &field); | |
362 | #define DEBUGFS_DEVSTATS_ADD(name) \ | |
7bcfaf2f | 363 | debugfs_create_file(#name, 0400, statsd, local, &stats_ ##name## _ops); |
e9f207f0 | 364 | |
e9f207f0 JB |
365 | DEBUGFS_DEVSTATS_FILE(dot11ACKFailureCount); |
366 | DEBUGFS_DEVSTATS_FILE(dot11RTSFailureCount); | |
367 | DEBUGFS_DEVSTATS_FILE(dot11FCSErrorCount); | |
368 | DEBUGFS_DEVSTATS_FILE(dot11RTSSuccessCount); | |
369 | ||
e9f207f0 JB |
370 | void debugfs_hw_add(struct ieee80211_local *local) |
371 | { | |
372 | struct dentry *phyd = local->hw.wiphy->debugfsdir; | |
373 | struct dentry *statsd; | |
374 | ||
375 | if (!phyd) | |
376 | return; | |
377 | ||
378 | local->debugfs.stations = debugfs_create_dir("stations", phyd); | |
379 | local->debugfs.keys = debugfs_create_dir("keys", phyd); | |
380 | ||
e9f207f0 | 381 | DEBUGFS_ADD(frequency); |
e9f207f0 | 382 | DEBUGFS_ADD(total_ps_buffered); |
e9f207f0 | 383 | DEBUGFS_ADD(wep_iv); |
ae54c985 | 384 | DEBUGFS_ADD(tsf); |
db2e6bd4 | 385 | DEBUGFS_ADD(queues); |
827b1fb4 | 386 | DEBUGFS_ADD_MODE(reset, 0200); |
d3707d99 | 387 | DEBUGFS_ADD(noack); |
50ae0cf1 KV |
388 | DEBUGFS_ADD(uapsd_queues); |
389 | DEBUGFS_ADD(uapsd_max_sp_len); | |
199d69f2 | 390 | DEBUGFS_ADD(channel_type); |
e9f207f0 JB |
391 | |
392 | statsd = debugfs_create_dir("statistics", phyd); | |
e9f207f0 JB |
393 | |
394 | /* if the dir failed, don't put all the other things into the root! */ | |
395 | if (!statsd) | |
396 | return; | |
397 | ||
2826bcd8 FF |
398 | DEBUGFS_STATS_ADD(transmitted_fragment_count, |
399 | local->dot11TransmittedFragmentCount); | |
400 | DEBUGFS_STATS_ADD(multicast_transmitted_frame_count, | |
401 | local->dot11MulticastTransmittedFrameCount); | |
402 | DEBUGFS_STATS_ADD(failed_count, local->dot11FailedCount); | |
403 | DEBUGFS_STATS_ADD(retry_count, local->dot11RetryCount); | |
404 | DEBUGFS_STATS_ADD(multiple_retry_count, | |
405 | local->dot11MultipleRetryCount); | |
406 | DEBUGFS_STATS_ADD(frame_duplicate_count, | |
407 | local->dot11FrameDuplicateCount); | |
408 | DEBUGFS_STATS_ADD(received_fragment_count, | |
409 | local->dot11ReceivedFragmentCount); | |
410 | DEBUGFS_STATS_ADD(multicast_received_frame_count, | |
411 | local->dot11MulticastReceivedFrameCount); | |
412 | DEBUGFS_STATS_ADD(transmitted_frame_count, | |
413 | local->dot11TransmittedFrameCount); | |
e9f207f0 | 414 | #ifdef CONFIG_MAC80211_DEBUG_COUNTERS |
2826bcd8 FF |
415 | DEBUGFS_STATS_ADD(tx_handlers_drop, local->tx_handlers_drop); |
416 | DEBUGFS_STATS_ADD(tx_handlers_queued, local->tx_handlers_queued); | |
417 | DEBUGFS_STATS_ADD(tx_handlers_drop_unencrypted, | |
418 | local->tx_handlers_drop_unencrypted); | |
419 | DEBUGFS_STATS_ADD(tx_handlers_drop_fragment, | |
420 | local->tx_handlers_drop_fragment); | |
421 | DEBUGFS_STATS_ADD(tx_handlers_drop_wep, | |
422 | local->tx_handlers_drop_wep); | |
423 | DEBUGFS_STATS_ADD(tx_handlers_drop_not_assoc, | |
424 | local->tx_handlers_drop_not_assoc); | |
425 | DEBUGFS_STATS_ADD(tx_handlers_drop_unauth_port, | |
426 | local->tx_handlers_drop_unauth_port); | |
427 | DEBUGFS_STATS_ADD(rx_handlers_drop, local->rx_handlers_drop); | |
428 | DEBUGFS_STATS_ADD(rx_handlers_queued, local->rx_handlers_queued); | |
429 | DEBUGFS_STATS_ADD(rx_handlers_drop_nullfunc, | |
430 | local->rx_handlers_drop_nullfunc); | |
431 | DEBUGFS_STATS_ADD(rx_handlers_drop_defrag, | |
432 | local->rx_handlers_drop_defrag); | |
433 | DEBUGFS_STATS_ADD(rx_handlers_drop_short, | |
434 | local->rx_handlers_drop_short); | |
435 | DEBUGFS_STATS_ADD(rx_handlers_drop_passive_scan, | |
436 | local->rx_handlers_drop_passive_scan); | |
437 | DEBUGFS_STATS_ADD(tx_expand_skb_head, | |
438 | local->tx_expand_skb_head); | |
439 | DEBUGFS_STATS_ADD(tx_expand_skb_head_cloned, | |
440 | local->tx_expand_skb_head_cloned); | |
441 | DEBUGFS_STATS_ADD(rx_expand_skb_head, | |
442 | local->rx_expand_skb_head); | |
443 | DEBUGFS_STATS_ADD(rx_expand_skb_head2, | |
444 | local->rx_expand_skb_head2); | |
445 | DEBUGFS_STATS_ADD(rx_handlers_fragments, | |
446 | local->rx_handlers_fragments); | |
447 | DEBUGFS_STATS_ADD(tx_status_drop, | |
448 | local->tx_status_drop); | |
e9f207f0 | 449 | #endif |
2826bcd8 FF |
450 | DEBUGFS_DEVSTATS_ADD(dot11ACKFailureCount); |
451 | DEBUGFS_DEVSTATS_ADD(dot11RTSFailureCount); | |
452 | DEBUGFS_DEVSTATS_ADD(dot11FCSErrorCount); | |
453 | DEBUGFS_DEVSTATS_ADD(dot11RTSSuccessCount); | |
e9f207f0 | 454 | } |