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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); |
0fb9a9ec | 89 | wiphy_info(local->hw.wiphy, "debugfs reset TSF\n"); |
3b5d665b AF |
90 | } |
91 | } else { | |
92 | tsf = simple_strtoul(buf, NULL, 0); | |
93 | if (local->ops->set_tsf) { | |
24487981 | 94 | drv_set_tsf(local, tsf); |
0fb9a9ec JP |
95 | wiphy_info(local->hw.wiphy, |
96 | "debugfs set TSF to %#018llx\n", tsf); | |
97 | ||
3b5d665b AF |
98 | } |
99 | } | |
100 | ||
101 | return count; | |
102 | } | |
103 | ||
104 | static const struct file_operations tsf_ops = { | |
105 | .read = tsf_read, | |
106 | .write = tsf_write, | |
6038f373 AB |
107 | .open = mac80211_open_file_generic, |
108 | .llseek = default_llseek, | |
3b5d665b | 109 | }; |
e9f207f0 | 110 | |
827b1fb4 JB |
111 | static ssize_t reset_write(struct file *file, const char __user *user_buf, |
112 | size_t count, loff_t *ppos) | |
113 | { | |
114 | struct ieee80211_local *local = file->private_data; | |
115 | ||
116 | rtnl_lock(); | |
117 | __ieee80211_suspend(&local->hw); | |
118 | __ieee80211_resume(&local->hw); | |
119 | rtnl_unlock(); | |
120 | ||
121 | return count; | |
122 | } | |
123 | ||
124 | static const struct file_operations reset_ops = { | |
125 | .write = reset_write, | |
126 | .open = mac80211_open_file_generic, | |
6038f373 | 127 | .llseek = noop_llseek, |
827b1fb4 JB |
128 | }; |
129 | ||
d3707d99 JB |
130 | static ssize_t noack_read(struct file *file, char __user *user_buf, |
131 | size_t count, loff_t *ppos) | |
132 | { | |
133 | struct ieee80211_local *local = file->private_data; | |
134 | int res; | |
135 | char buf[10]; | |
136 | ||
137 | res = scnprintf(buf, sizeof(buf), "%d\n", local->wifi_wme_noack_test); | |
138 | ||
139 | return simple_read_from_buffer(user_buf, count, ppos, buf, res); | |
140 | } | |
141 | ||
142 | static ssize_t noack_write(struct file *file, | |
143 | const char __user *user_buf, | |
144 | size_t count, loff_t *ppos) | |
145 | { | |
146 | struct ieee80211_local *local = file->private_data; | |
147 | char buf[10]; | |
148 | size_t len; | |
149 | ||
150 | len = min(count, sizeof(buf) - 1); | |
151 | if (copy_from_user(buf, user_buf, len)) | |
152 | return -EFAULT; | |
153 | buf[len] = '\0'; | |
154 | ||
155 | local->wifi_wme_noack_test = !!simple_strtoul(buf, NULL, 0); | |
156 | ||
157 | return count; | |
158 | } | |
159 | ||
160 | static const struct file_operations noack_ops = { | |
161 | .read = noack_read, | |
162 | .write = noack_write, | |
6038f373 AB |
163 | .open = mac80211_open_file_generic, |
164 | .llseek = default_llseek, | |
d3707d99 JB |
165 | }; |
166 | ||
50ae0cf1 KV |
167 | static ssize_t uapsd_queues_read(struct file *file, char __user *user_buf, |
168 | size_t count, loff_t *ppos) | |
169 | { | |
170 | struct ieee80211_local *local = file->private_data; | |
171 | int res; | |
172 | char buf[10]; | |
173 | ||
174 | res = scnprintf(buf, sizeof(buf), "0x%x\n", local->uapsd_queues); | |
175 | ||
176 | return simple_read_from_buffer(user_buf, count, ppos, buf, res); | |
177 | } | |
178 | ||
179 | static ssize_t uapsd_queues_write(struct file *file, | |
180 | const char __user *user_buf, | |
181 | size_t count, loff_t *ppos) | |
182 | { | |
183 | struct ieee80211_local *local = file->private_data; | |
184 | unsigned long val; | |
185 | char buf[10]; | |
186 | size_t len; | |
187 | int ret; | |
188 | ||
189 | len = min(count, sizeof(buf) - 1); | |
190 | if (copy_from_user(buf, user_buf, len)) | |
191 | return -EFAULT; | |
192 | buf[len] = '\0'; | |
193 | ||
194 | ret = strict_strtoul(buf, 0, &val); | |
195 | ||
196 | if (ret) | |
197 | return -EINVAL; | |
198 | ||
199 | if (val & ~IEEE80211_WMM_IE_STA_QOSINFO_AC_MASK) | |
200 | return -ERANGE; | |
201 | ||
202 | local->uapsd_queues = val; | |
203 | ||
204 | return count; | |
205 | } | |
206 | ||
207 | static const struct file_operations uapsd_queues_ops = { | |
208 | .read = uapsd_queues_read, | |
209 | .write = uapsd_queues_write, | |
6038f373 AB |
210 | .open = mac80211_open_file_generic, |
211 | .llseek = default_llseek, | |
50ae0cf1 KV |
212 | }; |
213 | ||
214 | static ssize_t uapsd_max_sp_len_read(struct file *file, char __user *user_buf, | |
215 | size_t count, loff_t *ppos) | |
216 | { | |
217 | struct ieee80211_local *local = file->private_data; | |
218 | int res; | |
219 | char buf[10]; | |
220 | ||
221 | res = scnprintf(buf, sizeof(buf), "0x%x\n", local->uapsd_max_sp_len); | |
222 | ||
223 | return simple_read_from_buffer(user_buf, count, ppos, buf, res); | |
224 | } | |
225 | ||
226 | static ssize_t uapsd_max_sp_len_write(struct file *file, | |
227 | const char __user *user_buf, | |
228 | size_t count, loff_t *ppos) | |
229 | { | |
230 | struct ieee80211_local *local = file->private_data; | |
231 | unsigned long val; | |
232 | char buf[10]; | |
233 | size_t len; | |
234 | int ret; | |
235 | ||
236 | len = min(count, sizeof(buf) - 1); | |
237 | if (copy_from_user(buf, user_buf, len)) | |
238 | return -EFAULT; | |
239 | buf[len] = '\0'; | |
240 | ||
241 | ret = strict_strtoul(buf, 0, &val); | |
242 | ||
243 | if (ret) | |
244 | return -EINVAL; | |
245 | ||
246 | if (val & ~IEEE80211_WMM_IE_STA_QOSINFO_SP_MASK) | |
247 | return -ERANGE; | |
248 | ||
249 | local->uapsd_max_sp_len = val; | |
250 | ||
251 | return count; | |
252 | } | |
253 | ||
254 | static const struct file_operations uapsd_max_sp_len_ops = { | |
255 | .read = uapsd_max_sp_len_read, | |
256 | .write = uapsd_max_sp_len_write, | |
6038f373 AB |
257 | .open = mac80211_open_file_generic, |
258 | .llseek = default_llseek, | |
50ae0cf1 KV |
259 | }; |
260 | ||
199d69f2 BP |
261 | static ssize_t channel_type_read(struct file *file, char __user *user_buf, |
262 | size_t count, loff_t *ppos) | |
263 | { | |
264 | struct ieee80211_local *local = file->private_data; | |
265 | const char *buf; | |
266 | ||
267 | switch (local->hw.conf.channel_type) { | |
268 | case NL80211_CHAN_NO_HT: | |
269 | buf = "no ht\n"; | |
270 | break; | |
271 | case NL80211_CHAN_HT20: | |
272 | buf = "ht20\n"; | |
273 | break; | |
274 | case NL80211_CHAN_HT40MINUS: | |
275 | buf = "ht40-\n"; | |
276 | break; | |
277 | case NL80211_CHAN_HT40PLUS: | |
278 | buf = "ht40+\n"; | |
279 | break; | |
280 | default: | |
281 | buf = "???"; | |
282 | break; | |
283 | } | |
284 | ||
285 | return simple_read_from_buffer(user_buf, count, ppos, buf, strlen(buf)); | |
286 | } | |
287 | ||
288 | static const struct file_operations channel_type_ops = { | |
289 | .read = channel_type_read, | |
6038f373 AB |
290 | .open = mac80211_open_file_generic, |
291 | .llseek = default_llseek, | |
199d69f2 BP |
292 | }; |
293 | ||
db2e6bd4 JB |
294 | static ssize_t queues_read(struct file *file, char __user *user_buf, |
295 | size_t count, loff_t *ppos) | |
296 | { | |
297 | struct ieee80211_local *local = file->private_data; | |
298 | unsigned long flags; | |
299 | char buf[IEEE80211_MAX_QUEUES * 20]; | |
300 | int q, res = 0; | |
301 | ||
302 | spin_lock_irqsave(&local->queue_stop_reason_lock, flags); | |
303 | for (q = 0; q < local->hw.queues; q++) | |
304 | res += sprintf(buf + res, "%02d: %#.8lx/%d\n", q, | |
305 | local->queue_stop_reasons[q], | |
3b8d81e0 | 306 | skb_queue_len(&local->pending[q])); |
db2e6bd4 JB |
307 | spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags); |
308 | ||
309 | return simple_read_from_buffer(user_buf, count, ppos, buf, res); | |
310 | } | |
311 | ||
312 | static const struct file_operations queues_ops = { | |
313 | .read = queues_read, | |
6038f373 AB |
314 | .open = mac80211_open_file_generic, |
315 | .llseek = default_llseek, | |
db2e6bd4 JB |
316 | }; |
317 | ||
e9f207f0 JB |
318 | /* statistics stuff */ |
319 | ||
e9f207f0 JB |
320 | static ssize_t format_devstat_counter(struct ieee80211_local *local, |
321 | char __user *userbuf, | |
322 | size_t count, loff_t *ppos, | |
323 | int (*printvalue)(struct ieee80211_low_level_stats *stats, char *buf, | |
324 | int buflen)) | |
325 | { | |
326 | struct ieee80211_low_level_stats stats; | |
327 | char buf[20]; | |
328 | int res; | |
329 | ||
75636525 | 330 | rtnl_lock(); |
24487981 | 331 | res = drv_get_stats(local, &stats); |
e9f207f0 | 332 | rtnl_unlock(); |
24487981 JB |
333 | if (res) |
334 | return res; | |
335 | res = printvalue(&stats, buf, sizeof(buf)); | |
e9f207f0 JB |
336 | return simple_read_from_buffer(userbuf, count, ppos, buf, res); |
337 | } | |
338 | ||
339 | #define DEBUGFS_DEVSTATS_FILE(name) \ | |
340 | static int print_devstats_##name(struct ieee80211_low_level_stats *stats,\ | |
341 | char *buf, int buflen) \ | |
342 | { \ | |
343 | return scnprintf(buf, buflen, "%u\n", stats->name); \ | |
344 | } \ | |
345 | static ssize_t stats_ ##name## _read(struct file *file, \ | |
346 | char __user *userbuf, \ | |
347 | size_t count, loff_t *ppos) \ | |
348 | { \ | |
349 | return format_devstat_counter(file->private_data, \ | |
350 | userbuf, \ | |
351 | count, \ | |
352 | ppos, \ | |
353 | print_devstats_##name); \ | |
354 | } \ | |
355 | \ | |
356 | static const struct file_operations stats_ ##name## _ops = { \ | |
357 | .read = stats_ ##name## _read, \ | |
358 | .open = mac80211_open_file_generic, \ | |
2b18ab36 | 359 | .llseek = generic_file_llseek, \ |
e9f207f0 JB |
360 | }; |
361 | ||
2826bcd8 FF |
362 | #define DEBUGFS_STATS_ADD(name, field) \ |
363 | debugfs_create_u32(#name, 0400, statsd, (u32 *) &field); | |
364 | #define DEBUGFS_DEVSTATS_ADD(name) \ | |
7bcfaf2f | 365 | debugfs_create_file(#name, 0400, statsd, local, &stats_ ##name## _ops); |
e9f207f0 | 366 | |
e9f207f0 JB |
367 | DEBUGFS_DEVSTATS_FILE(dot11ACKFailureCount); |
368 | DEBUGFS_DEVSTATS_FILE(dot11RTSFailureCount); | |
369 | DEBUGFS_DEVSTATS_FILE(dot11FCSErrorCount); | |
370 | DEBUGFS_DEVSTATS_FILE(dot11RTSSuccessCount); | |
371 | ||
e9f207f0 JB |
372 | void debugfs_hw_add(struct ieee80211_local *local) |
373 | { | |
374 | struct dentry *phyd = local->hw.wiphy->debugfsdir; | |
375 | struct dentry *statsd; | |
376 | ||
377 | if (!phyd) | |
378 | return; | |
379 | ||
e9f207f0 JB |
380 | local->debugfs.keys = debugfs_create_dir("keys", phyd); |
381 | ||
e9f207f0 | 382 | DEBUGFS_ADD(frequency); |
e9f207f0 | 383 | DEBUGFS_ADD(total_ps_buffered); |
e9f207f0 | 384 | DEBUGFS_ADD(wep_iv); |
ae54c985 | 385 | DEBUGFS_ADD(tsf); |
db2e6bd4 | 386 | DEBUGFS_ADD(queues); |
827b1fb4 | 387 | DEBUGFS_ADD_MODE(reset, 0200); |
d3707d99 | 388 | DEBUGFS_ADD(noack); |
50ae0cf1 KV |
389 | DEBUGFS_ADD(uapsd_queues); |
390 | DEBUGFS_ADD(uapsd_max_sp_len); | |
199d69f2 | 391 | DEBUGFS_ADD(channel_type); |
e9f207f0 JB |
392 | |
393 | statsd = debugfs_create_dir("statistics", phyd); | |
e9f207f0 JB |
394 | |
395 | /* if the dir failed, don't put all the other things into the root! */ | |
396 | if (!statsd) | |
397 | return; | |
398 | ||
2826bcd8 FF |
399 | DEBUGFS_STATS_ADD(transmitted_fragment_count, |
400 | local->dot11TransmittedFragmentCount); | |
401 | DEBUGFS_STATS_ADD(multicast_transmitted_frame_count, | |
402 | local->dot11MulticastTransmittedFrameCount); | |
403 | DEBUGFS_STATS_ADD(failed_count, local->dot11FailedCount); | |
404 | DEBUGFS_STATS_ADD(retry_count, local->dot11RetryCount); | |
405 | DEBUGFS_STATS_ADD(multiple_retry_count, | |
406 | local->dot11MultipleRetryCount); | |
407 | DEBUGFS_STATS_ADD(frame_duplicate_count, | |
408 | local->dot11FrameDuplicateCount); | |
409 | DEBUGFS_STATS_ADD(received_fragment_count, | |
410 | local->dot11ReceivedFragmentCount); | |
411 | DEBUGFS_STATS_ADD(multicast_received_frame_count, | |
412 | local->dot11MulticastReceivedFrameCount); | |
413 | DEBUGFS_STATS_ADD(transmitted_frame_count, | |
414 | local->dot11TransmittedFrameCount); | |
e9f207f0 | 415 | #ifdef CONFIG_MAC80211_DEBUG_COUNTERS |
2826bcd8 FF |
416 | DEBUGFS_STATS_ADD(tx_handlers_drop, local->tx_handlers_drop); |
417 | DEBUGFS_STATS_ADD(tx_handlers_queued, local->tx_handlers_queued); | |
418 | DEBUGFS_STATS_ADD(tx_handlers_drop_unencrypted, | |
419 | local->tx_handlers_drop_unencrypted); | |
420 | DEBUGFS_STATS_ADD(tx_handlers_drop_fragment, | |
421 | local->tx_handlers_drop_fragment); | |
422 | DEBUGFS_STATS_ADD(tx_handlers_drop_wep, | |
423 | local->tx_handlers_drop_wep); | |
424 | DEBUGFS_STATS_ADD(tx_handlers_drop_not_assoc, | |
425 | local->tx_handlers_drop_not_assoc); | |
426 | DEBUGFS_STATS_ADD(tx_handlers_drop_unauth_port, | |
427 | local->tx_handlers_drop_unauth_port); | |
428 | DEBUGFS_STATS_ADD(rx_handlers_drop, local->rx_handlers_drop); | |
429 | DEBUGFS_STATS_ADD(rx_handlers_queued, local->rx_handlers_queued); | |
430 | DEBUGFS_STATS_ADD(rx_handlers_drop_nullfunc, | |
431 | local->rx_handlers_drop_nullfunc); | |
432 | DEBUGFS_STATS_ADD(rx_handlers_drop_defrag, | |
433 | local->rx_handlers_drop_defrag); | |
434 | DEBUGFS_STATS_ADD(rx_handlers_drop_short, | |
435 | local->rx_handlers_drop_short); | |
436 | DEBUGFS_STATS_ADD(rx_handlers_drop_passive_scan, | |
437 | local->rx_handlers_drop_passive_scan); | |
438 | DEBUGFS_STATS_ADD(tx_expand_skb_head, | |
439 | local->tx_expand_skb_head); | |
440 | DEBUGFS_STATS_ADD(tx_expand_skb_head_cloned, | |
441 | local->tx_expand_skb_head_cloned); | |
442 | DEBUGFS_STATS_ADD(rx_expand_skb_head, | |
443 | local->rx_expand_skb_head); | |
444 | DEBUGFS_STATS_ADD(rx_expand_skb_head2, | |
445 | local->rx_expand_skb_head2); | |
446 | DEBUGFS_STATS_ADD(rx_handlers_fragments, | |
447 | local->rx_handlers_fragments); | |
448 | DEBUGFS_STATS_ADD(tx_status_drop, | |
449 | local->tx_status_drop); | |
e9f207f0 | 450 | #endif |
2826bcd8 FF |
451 | DEBUGFS_DEVSTATS_ADD(dot11ACKFailureCount); |
452 | DEBUGFS_DEVSTATS_ADD(dot11RTSFailureCount); | |
453 | DEBUGFS_DEVSTATS_ADD(dot11FCSErrorCount); | |
454 | DEBUGFS_DEVSTATS_ADD(dot11RTSSuccessCount); | |
e9f207f0 | 455 | } |