Commit | Line | Data |
---|---|---|
e9f207f0 JB |
1 | /* |
2 | * mac80211 debugfs for wireless PHYs | |
3 | * | |
4 | * Copyright 2007 Johannes Berg <johannes@sipsolutions.net> | |
5 | * | |
6 | * GPLv2 | |
7 | * | |
8 | */ | |
9 | ||
10 | #include <linux/debugfs.h> | |
11 | #include <linux/rtnetlink.h> | |
12 | #include "ieee80211_i.h" | |
24487981 | 13 | #include "driver-ops.h" |
2c8dccc7 | 14 | #include "rate.h" |
e9f207f0 JB |
15 | #include "debugfs.h" |
16 | ||
17 | int mac80211_open_file_generic(struct inode *inode, struct file *file) | |
18 | { | |
19 | file->private_data = inode->i_private; | |
20 | return 0; | |
21 | } | |
22 | ||
e9f207f0 JB |
23 | #define DEBUGFS_READONLY_FILE(name, buflen, fmt, value...) \ |
24 | static ssize_t name## _read(struct file *file, char __user *userbuf, \ | |
25 | size_t count, loff_t *ppos) \ | |
26 | { \ | |
27 | struct ieee80211_local *local = file->private_data; \ | |
28 | char buf[buflen]; \ | |
29 | int res; \ | |
30 | \ | |
31 | res = scnprintf(buf, buflen, fmt "\n", ##value); \ | |
32 | return simple_read_from_buffer(userbuf, count, ppos, buf, res); \ | |
33 | } \ | |
34 | \ | |
35 | static const struct file_operations name## _ops = { \ | |
36 | .read = name## _read, \ | |
37 | .open = mac80211_open_file_generic, \ | |
38 | }; | |
39 | ||
40 | #define DEBUGFS_ADD(name) \ | |
bebb8a5e | 41 | local->debugfs.name = debugfs_create_file(#name, 0400, phyd, \ |
e9f207f0 JB |
42 | local, &name## _ops); |
43 | ||
827b1fb4 JB |
44 | #define DEBUGFS_ADD_MODE(name, mode) \ |
45 | local->debugfs.name = debugfs_create_file(#name, mode, phyd, \ | |
46 | local, &name## _ops); | |
47 | ||
e9f207f0 JB |
48 | #define DEBUGFS_DEL(name) \ |
49 | debugfs_remove(local->debugfs.name); \ | |
50 | local->debugfs.name = NULL; | |
51 | ||
52 | ||
e9f207f0 | 53 | DEBUGFS_READONLY_FILE(frequency, 20, "%d", |
8318d78a | 54 | local->hw.conf.channel->center_freq); |
e9f207f0 JB |
55 | DEBUGFS_READONLY_FILE(total_ps_buffered, 20, "%d", |
56 | local->total_ps_buffered); | |
3b5d665b | 57 | DEBUGFS_READONLY_FILE(wep_iv, 20, "%#08x", |
e9f207f0 | 58 | local->wep_iv & 0xffffff); |
e9f207f0 JB |
59 | DEBUGFS_READONLY_FILE(rate_ctrl_alg, 100, "%s", |
60 | local->rate_ctrl ? local->rate_ctrl->ops->name : "<unset>"); | |
3b5d665b AF |
61 | |
62 | static ssize_t tsf_read(struct file *file, char __user *user_buf, | |
63 | size_t count, loff_t *ppos) | |
64 | { | |
65 | struct ieee80211_local *local = file->private_data; | |
24487981 | 66 | u64 tsf; |
3b5d665b AF |
67 | char buf[100]; |
68 | ||
24487981 | 69 | tsf = drv_get_tsf(local); |
3b5d665b AF |
70 | |
71 | snprintf(buf, sizeof(buf), "0x%016llx\n", (unsigned long long) tsf); | |
72 | ||
73 | return simple_read_from_buffer(user_buf, count, ppos, buf, 19); | |
74 | } | |
75 | ||
76 | static ssize_t tsf_write(struct file *file, | |
77 | const char __user *user_buf, | |
78 | size_t count, loff_t *ppos) | |
79 | { | |
80 | struct ieee80211_local *local = file->private_data; | |
81 | unsigned long long tsf; | |
82 | char buf[100]; | |
83 | size_t len; | |
84 | ||
85 | len = min(count, sizeof(buf) - 1); | |
86 | if (copy_from_user(buf, user_buf, len)) | |
87 | return -EFAULT; | |
88 | buf[len] = '\0'; | |
89 | ||
90 | if (strncmp(buf, "reset", 5) == 0) { | |
91 | if (local->ops->reset_tsf) { | |
24487981 | 92 | drv_reset_tsf(local); |
3b5d665b AF |
93 | printk(KERN_INFO "%s: debugfs reset TSF\n", wiphy_name(local->hw.wiphy)); |
94 | } | |
95 | } else { | |
96 | tsf = simple_strtoul(buf, NULL, 0); | |
97 | if (local->ops->set_tsf) { | |
24487981 | 98 | drv_set_tsf(local, tsf); |
3b5d665b AF |
99 | printk(KERN_INFO "%s: debugfs set TSF to %#018llx\n", wiphy_name(local->hw.wiphy), tsf); |
100 | } | |
101 | } | |
102 | ||
103 | return count; | |
104 | } | |
105 | ||
106 | static const struct file_operations tsf_ops = { | |
107 | .read = tsf_read, | |
108 | .write = tsf_write, | |
109 | .open = mac80211_open_file_generic | |
110 | }; | |
e9f207f0 | 111 | |
827b1fb4 JB |
112 | static ssize_t reset_write(struct file *file, const char __user *user_buf, |
113 | size_t count, loff_t *ppos) | |
114 | { | |
115 | struct ieee80211_local *local = file->private_data; | |
116 | ||
117 | rtnl_lock(); | |
118 | __ieee80211_suspend(&local->hw); | |
119 | __ieee80211_resume(&local->hw); | |
120 | rtnl_unlock(); | |
121 | ||
122 | return count; | |
123 | } | |
124 | ||
125 | static const struct file_operations reset_ops = { | |
126 | .write = reset_write, | |
127 | .open = mac80211_open_file_generic, | |
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, | |
163 | .open = mac80211_open_file_generic | |
164 | }; | |
165 | ||
db2e6bd4 JB |
166 | static ssize_t queues_read(struct file *file, char __user *user_buf, |
167 | size_t count, loff_t *ppos) | |
168 | { | |
169 | struct ieee80211_local *local = file->private_data; | |
170 | unsigned long flags; | |
171 | char buf[IEEE80211_MAX_QUEUES * 20]; | |
172 | int q, res = 0; | |
173 | ||
174 | spin_lock_irqsave(&local->queue_stop_reason_lock, flags); | |
175 | for (q = 0; q < local->hw.queues; q++) | |
176 | res += sprintf(buf + res, "%02d: %#.8lx/%d\n", q, | |
177 | local->queue_stop_reasons[q], | |
3b8d81e0 | 178 | skb_queue_len(&local->pending[q])); |
db2e6bd4 JB |
179 | spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags); |
180 | ||
181 | return simple_read_from_buffer(user_buf, count, ppos, buf, res); | |
182 | } | |
183 | ||
184 | static const struct file_operations queues_ops = { | |
185 | .read = queues_read, | |
186 | .open = mac80211_open_file_generic | |
187 | }; | |
188 | ||
e9f207f0 JB |
189 | /* statistics stuff */ |
190 | ||
e9f207f0 JB |
191 | #define DEBUGFS_STATS_FILE(name, buflen, fmt, value...) \ |
192 | DEBUGFS_READONLY_FILE(stats_ ##name, buflen, fmt, ##value) | |
193 | ||
194 | static ssize_t format_devstat_counter(struct ieee80211_local *local, | |
195 | char __user *userbuf, | |
196 | size_t count, loff_t *ppos, | |
197 | int (*printvalue)(struct ieee80211_low_level_stats *stats, char *buf, | |
198 | int buflen)) | |
199 | { | |
200 | struct ieee80211_low_level_stats stats; | |
201 | char buf[20]; | |
202 | int res; | |
203 | ||
75636525 | 204 | rtnl_lock(); |
24487981 | 205 | res = drv_get_stats(local, &stats); |
e9f207f0 | 206 | rtnl_unlock(); |
24487981 JB |
207 | if (res) |
208 | return res; | |
209 | res = printvalue(&stats, buf, sizeof(buf)); | |
e9f207f0 JB |
210 | return simple_read_from_buffer(userbuf, count, ppos, buf, res); |
211 | } | |
212 | ||
213 | #define DEBUGFS_DEVSTATS_FILE(name) \ | |
214 | static int print_devstats_##name(struct ieee80211_low_level_stats *stats,\ | |
215 | char *buf, int buflen) \ | |
216 | { \ | |
217 | return scnprintf(buf, buflen, "%u\n", stats->name); \ | |
218 | } \ | |
219 | static ssize_t stats_ ##name## _read(struct file *file, \ | |
220 | char __user *userbuf, \ | |
221 | size_t count, loff_t *ppos) \ | |
222 | { \ | |
223 | return format_devstat_counter(file->private_data, \ | |
224 | userbuf, \ | |
225 | count, \ | |
226 | ppos, \ | |
227 | print_devstats_##name); \ | |
228 | } \ | |
229 | \ | |
230 | static const struct file_operations stats_ ##name## _ops = { \ | |
231 | .read = stats_ ##name## _read, \ | |
232 | .open = mac80211_open_file_generic, \ | |
233 | }; | |
234 | ||
235 | #define DEBUGFS_STATS_ADD(name) \ | |
bebb8a5e | 236 | local->debugfs.stats.name = debugfs_create_file(#name, 0400, statsd,\ |
e9f207f0 JB |
237 | local, &stats_ ##name## _ops); |
238 | ||
239 | #define DEBUGFS_STATS_DEL(name) \ | |
240 | debugfs_remove(local->debugfs.stats.name); \ | |
241 | local->debugfs.stats.name = NULL; | |
242 | ||
243 | DEBUGFS_STATS_FILE(transmitted_fragment_count, 20, "%u", | |
244 | local->dot11TransmittedFragmentCount); | |
245 | DEBUGFS_STATS_FILE(multicast_transmitted_frame_count, 20, "%u", | |
246 | local->dot11MulticastTransmittedFrameCount); | |
247 | DEBUGFS_STATS_FILE(failed_count, 20, "%u", | |
248 | local->dot11FailedCount); | |
249 | DEBUGFS_STATS_FILE(retry_count, 20, "%u", | |
250 | local->dot11RetryCount); | |
251 | DEBUGFS_STATS_FILE(multiple_retry_count, 20, "%u", | |
252 | local->dot11MultipleRetryCount); | |
253 | DEBUGFS_STATS_FILE(frame_duplicate_count, 20, "%u", | |
254 | local->dot11FrameDuplicateCount); | |
255 | DEBUGFS_STATS_FILE(received_fragment_count, 20, "%u", | |
256 | local->dot11ReceivedFragmentCount); | |
257 | DEBUGFS_STATS_FILE(multicast_received_frame_count, 20, "%u", | |
258 | local->dot11MulticastReceivedFrameCount); | |
259 | DEBUGFS_STATS_FILE(transmitted_frame_count, 20, "%u", | |
260 | local->dot11TransmittedFrameCount); | |
e9f207f0 JB |
261 | #ifdef CONFIG_MAC80211_DEBUG_COUNTERS |
262 | DEBUGFS_STATS_FILE(tx_handlers_drop, 20, "%u", | |
263 | local->tx_handlers_drop); | |
264 | DEBUGFS_STATS_FILE(tx_handlers_queued, 20, "%u", | |
265 | local->tx_handlers_queued); | |
266 | DEBUGFS_STATS_FILE(tx_handlers_drop_unencrypted, 20, "%u", | |
267 | local->tx_handlers_drop_unencrypted); | |
268 | DEBUGFS_STATS_FILE(tx_handlers_drop_fragment, 20, "%u", | |
269 | local->tx_handlers_drop_fragment); | |
270 | DEBUGFS_STATS_FILE(tx_handlers_drop_wep, 20, "%u", | |
271 | local->tx_handlers_drop_wep); | |
272 | DEBUGFS_STATS_FILE(tx_handlers_drop_not_assoc, 20, "%u", | |
273 | local->tx_handlers_drop_not_assoc); | |
274 | DEBUGFS_STATS_FILE(tx_handlers_drop_unauth_port, 20, "%u", | |
275 | local->tx_handlers_drop_unauth_port); | |
276 | DEBUGFS_STATS_FILE(rx_handlers_drop, 20, "%u", | |
277 | local->rx_handlers_drop); | |
278 | DEBUGFS_STATS_FILE(rx_handlers_queued, 20, "%u", | |
279 | local->rx_handlers_queued); | |
280 | DEBUGFS_STATS_FILE(rx_handlers_drop_nullfunc, 20, "%u", | |
281 | local->rx_handlers_drop_nullfunc); | |
282 | DEBUGFS_STATS_FILE(rx_handlers_drop_defrag, 20, "%u", | |
283 | local->rx_handlers_drop_defrag); | |
284 | DEBUGFS_STATS_FILE(rx_handlers_drop_short, 20, "%u", | |
285 | local->rx_handlers_drop_short); | |
286 | DEBUGFS_STATS_FILE(rx_handlers_drop_passive_scan, 20, "%u", | |
287 | local->rx_handlers_drop_passive_scan); | |
288 | DEBUGFS_STATS_FILE(tx_expand_skb_head, 20, "%u", | |
289 | local->tx_expand_skb_head); | |
290 | DEBUGFS_STATS_FILE(tx_expand_skb_head_cloned, 20, "%u", | |
291 | local->tx_expand_skb_head_cloned); | |
292 | DEBUGFS_STATS_FILE(rx_expand_skb_head, 20, "%u", | |
293 | local->rx_expand_skb_head); | |
294 | DEBUGFS_STATS_FILE(rx_expand_skb_head2, 20, "%u", | |
295 | local->rx_expand_skb_head2); | |
296 | DEBUGFS_STATS_FILE(rx_handlers_fragments, 20, "%u", | |
297 | local->rx_handlers_fragments); | |
298 | DEBUGFS_STATS_FILE(tx_status_drop, 20, "%u", | |
299 | local->tx_status_drop); | |
300 | ||
e9f207f0 JB |
301 | #endif |
302 | ||
303 | DEBUGFS_DEVSTATS_FILE(dot11ACKFailureCount); | |
304 | DEBUGFS_DEVSTATS_FILE(dot11RTSFailureCount); | |
305 | DEBUGFS_DEVSTATS_FILE(dot11FCSErrorCount); | |
306 | DEBUGFS_DEVSTATS_FILE(dot11RTSSuccessCount); | |
307 | ||
308 | ||
309 | void debugfs_hw_add(struct ieee80211_local *local) | |
310 | { | |
311 | struct dentry *phyd = local->hw.wiphy->debugfsdir; | |
312 | struct dentry *statsd; | |
313 | ||
314 | if (!phyd) | |
315 | return; | |
316 | ||
317 | local->debugfs.stations = debugfs_create_dir("stations", phyd); | |
318 | local->debugfs.keys = debugfs_create_dir("keys", phyd); | |
319 | ||
e9f207f0 | 320 | DEBUGFS_ADD(frequency); |
e9f207f0 | 321 | DEBUGFS_ADD(total_ps_buffered); |
e9f207f0 | 322 | DEBUGFS_ADD(wep_iv); |
ae54c985 | 323 | DEBUGFS_ADD(tsf); |
db2e6bd4 | 324 | DEBUGFS_ADD(queues); |
827b1fb4 | 325 | DEBUGFS_ADD_MODE(reset, 0200); |
d3707d99 | 326 | DEBUGFS_ADD(noack); |
e9f207f0 JB |
327 | |
328 | statsd = debugfs_create_dir("statistics", phyd); | |
329 | local->debugfs.statistics = statsd; | |
330 | ||
331 | /* if the dir failed, don't put all the other things into the root! */ | |
332 | if (!statsd) | |
333 | return; | |
334 | ||
335 | DEBUGFS_STATS_ADD(transmitted_fragment_count); | |
336 | DEBUGFS_STATS_ADD(multicast_transmitted_frame_count); | |
337 | DEBUGFS_STATS_ADD(failed_count); | |
338 | DEBUGFS_STATS_ADD(retry_count); | |
339 | DEBUGFS_STATS_ADD(multiple_retry_count); | |
340 | DEBUGFS_STATS_ADD(frame_duplicate_count); | |
341 | DEBUGFS_STATS_ADD(received_fragment_count); | |
342 | DEBUGFS_STATS_ADD(multicast_received_frame_count); | |
343 | DEBUGFS_STATS_ADD(transmitted_frame_count); | |
e9f207f0 JB |
344 | #ifdef CONFIG_MAC80211_DEBUG_COUNTERS |
345 | DEBUGFS_STATS_ADD(tx_handlers_drop); | |
346 | DEBUGFS_STATS_ADD(tx_handlers_queued); | |
347 | DEBUGFS_STATS_ADD(tx_handlers_drop_unencrypted); | |
348 | DEBUGFS_STATS_ADD(tx_handlers_drop_fragment); | |
349 | DEBUGFS_STATS_ADD(tx_handlers_drop_wep); | |
350 | DEBUGFS_STATS_ADD(tx_handlers_drop_not_assoc); | |
351 | DEBUGFS_STATS_ADD(tx_handlers_drop_unauth_port); | |
352 | DEBUGFS_STATS_ADD(rx_handlers_drop); | |
353 | DEBUGFS_STATS_ADD(rx_handlers_queued); | |
354 | DEBUGFS_STATS_ADD(rx_handlers_drop_nullfunc); | |
355 | DEBUGFS_STATS_ADD(rx_handlers_drop_defrag); | |
356 | DEBUGFS_STATS_ADD(rx_handlers_drop_short); | |
357 | DEBUGFS_STATS_ADD(rx_handlers_drop_passive_scan); | |
358 | DEBUGFS_STATS_ADD(tx_expand_skb_head); | |
359 | DEBUGFS_STATS_ADD(tx_expand_skb_head_cloned); | |
360 | DEBUGFS_STATS_ADD(rx_expand_skb_head); | |
361 | DEBUGFS_STATS_ADD(rx_expand_skb_head2); | |
362 | DEBUGFS_STATS_ADD(rx_handlers_fragments); | |
363 | DEBUGFS_STATS_ADD(tx_status_drop); | |
e9f207f0 JB |
364 | #endif |
365 | DEBUGFS_STATS_ADD(dot11ACKFailureCount); | |
366 | DEBUGFS_STATS_ADD(dot11RTSFailureCount); | |
367 | DEBUGFS_STATS_ADD(dot11FCSErrorCount); | |
368 | DEBUGFS_STATS_ADD(dot11RTSSuccessCount); | |
369 | } | |
370 | ||
371 | void debugfs_hw_del(struct ieee80211_local *local) | |
372 | { | |
e9f207f0 | 373 | DEBUGFS_DEL(frequency); |
e9f207f0 | 374 | DEBUGFS_DEL(total_ps_buffered); |
e9f207f0 | 375 | DEBUGFS_DEL(wep_iv); |
ae54c985 | 376 | DEBUGFS_DEL(tsf); |
db2e6bd4 | 377 | DEBUGFS_DEL(queues); |
827b1fb4 | 378 | DEBUGFS_DEL(reset); |
d3707d99 | 379 | DEBUGFS_DEL(noack); |
e9f207f0 JB |
380 | |
381 | DEBUGFS_STATS_DEL(transmitted_fragment_count); | |
382 | DEBUGFS_STATS_DEL(multicast_transmitted_frame_count); | |
383 | DEBUGFS_STATS_DEL(failed_count); | |
384 | DEBUGFS_STATS_DEL(retry_count); | |
385 | DEBUGFS_STATS_DEL(multiple_retry_count); | |
386 | DEBUGFS_STATS_DEL(frame_duplicate_count); | |
387 | DEBUGFS_STATS_DEL(received_fragment_count); | |
388 | DEBUGFS_STATS_DEL(multicast_received_frame_count); | |
389 | DEBUGFS_STATS_DEL(transmitted_frame_count); | |
e9f207f0 JB |
390 | DEBUGFS_STATS_DEL(num_scans); |
391 | #ifdef CONFIG_MAC80211_DEBUG_COUNTERS | |
392 | DEBUGFS_STATS_DEL(tx_handlers_drop); | |
393 | DEBUGFS_STATS_DEL(tx_handlers_queued); | |
394 | DEBUGFS_STATS_DEL(tx_handlers_drop_unencrypted); | |
395 | DEBUGFS_STATS_DEL(tx_handlers_drop_fragment); | |
396 | DEBUGFS_STATS_DEL(tx_handlers_drop_wep); | |
397 | DEBUGFS_STATS_DEL(tx_handlers_drop_not_assoc); | |
398 | DEBUGFS_STATS_DEL(tx_handlers_drop_unauth_port); | |
399 | DEBUGFS_STATS_DEL(rx_handlers_drop); | |
400 | DEBUGFS_STATS_DEL(rx_handlers_queued); | |
401 | DEBUGFS_STATS_DEL(rx_handlers_drop_nullfunc); | |
402 | DEBUGFS_STATS_DEL(rx_handlers_drop_defrag); | |
403 | DEBUGFS_STATS_DEL(rx_handlers_drop_short); | |
404 | DEBUGFS_STATS_DEL(rx_handlers_drop_passive_scan); | |
405 | DEBUGFS_STATS_DEL(tx_expand_skb_head); | |
406 | DEBUGFS_STATS_DEL(tx_expand_skb_head_cloned); | |
407 | DEBUGFS_STATS_DEL(rx_expand_skb_head); | |
408 | DEBUGFS_STATS_DEL(rx_expand_skb_head2); | |
409 | DEBUGFS_STATS_DEL(rx_handlers_fragments); | |
410 | DEBUGFS_STATS_DEL(tx_status_drop); | |
e9f207f0 JB |
411 | #endif |
412 | DEBUGFS_STATS_DEL(dot11ACKFailureCount); | |
413 | DEBUGFS_STATS_DEL(dot11RTSFailureCount); | |
414 | DEBUGFS_STATS_DEL(dot11FCSErrorCount); | |
415 | DEBUGFS_STATS_DEL(dot11RTSSuccessCount); | |
416 | ||
417 | debugfs_remove(local->debugfs.statistics); | |
418 | local->debugfs.statistics = NULL; | |
419 | debugfs_remove(local->debugfs.stations); | |
420 | local->debugfs.stations = NULL; | |
421 | debugfs_remove(local->debugfs.keys); | |
422 | local->debugfs.keys = NULL; | |
423 | } |