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-rw-r--r--net/mac80211/debugfs.c433
1 files changed, 433 insertions, 0 deletions
diff --git a/net/mac80211/debugfs.c b/net/mac80211/debugfs.c
new file mode 100644
index 000000000000..bb6c0feb2d48
--- /dev/null
+++ b/net/mac80211/debugfs.c
@@ -0,0 +1,433 @@
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"
13#include "ieee80211_rate.h"
14#include "debugfs.h"
15
16int mac80211_open_file_generic(struct inode *inode, struct file *file)
17{
18 file->private_data = inode->i_private;
19 return 0;
20}
21
22static const char *ieee80211_mode_str(int mode)
23{
24 switch (mode) {
25 case MODE_IEEE80211A:
26 return "IEEE 802.11a";
27 case MODE_IEEE80211B:
28 return "IEEE 802.11b";
29 case MODE_IEEE80211G:
30 return "IEEE 802.11g";
31 case MODE_ATHEROS_TURBO:
32 return "Atheros Turbo (5 GHz)";
33 default:
34 return "UNKNOWN";
35 }
36}
37
38static ssize_t modes_read(struct file *file, char __user *userbuf,
39 size_t count, loff_t *ppos)
40{
41 struct ieee80211_local *local = file->private_data;
42 struct ieee80211_hw_mode *mode;
43 char buf[150], *p = buf;
44
45 /* FIXME: locking! */
46 list_for_each_entry(mode, &local->modes_list, list) {
47 p += scnprintf(p, sizeof(buf)+buf-p,
48 "%s\n", ieee80211_mode_str(mode->mode));
49 }
50
51 return simple_read_from_buffer(userbuf, count, ppos, buf, p-buf);
52}
53
54static const struct file_operations modes_ops = {
55 .read = modes_read,
56 .open = mac80211_open_file_generic,
57};
58
59#define DEBUGFS_READONLY_FILE(name, buflen, fmt, value...) \
60static ssize_t name## _read(struct file *file, char __user *userbuf, \
61 size_t count, loff_t *ppos) \
62{ \
63 struct ieee80211_local *local = file->private_data; \
64 char buf[buflen]; \
65 int res; \
66 \
67 res = scnprintf(buf, buflen, fmt "\n", ##value); \
68 return simple_read_from_buffer(userbuf, count, ppos, buf, res); \
69} \
70 \
71static const struct file_operations name## _ops = { \
72 .read = name## _read, \
73 .open = mac80211_open_file_generic, \
74};
75
76#define DEBUGFS_ADD(name) \
77 local->debugfs.name = debugfs_create_file(#name, 0444, phyd, \
78 local, &name## _ops);
79
80#define DEBUGFS_DEL(name) \
81 debugfs_remove(local->debugfs.name); \
82 local->debugfs.name = NULL;
83
84
85DEBUGFS_READONLY_FILE(channel, 20, "%d",
86 local->hw.conf.channel);
87DEBUGFS_READONLY_FILE(frequency, 20, "%d",
88 local->hw.conf.freq);
89DEBUGFS_READONLY_FILE(radar_detect, 20, "%d",
90 local->hw.conf.radar_detect);
91DEBUGFS_READONLY_FILE(antenna_sel_tx, 20, "%d",
92 local->hw.conf.antenna_sel_tx);
93DEBUGFS_READONLY_FILE(antenna_sel_rx, 20, "%d",
94 local->hw.conf.antenna_sel_rx);
95DEBUGFS_READONLY_FILE(bridge_packets, 20, "%d",
96 local->bridge_packets);
97DEBUGFS_READONLY_FILE(key_tx_rx_threshold, 20, "%d",
98 local->key_tx_rx_threshold);
99DEBUGFS_READONLY_FILE(rts_threshold, 20, "%d",
100 local->rts_threshold);
101DEBUGFS_READONLY_FILE(fragmentation_threshold, 20, "%d",
102 local->fragmentation_threshold);
103DEBUGFS_READONLY_FILE(short_retry_limit, 20, "%d",
104 local->short_retry_limit);
105DEBUGFS_READONLY_FILE(long_retry_limit, 20, "%d",
106 local->long_retry_limit);
107DEBUGFS_READONLY_FILE(total_ps_buffered, 20, "%d",
108 local->total_ps_buffered);
109DEBUGFS_READONLY_FILE(mode, 20, "%s",
110 ieee80211_mode_str(local->hw.conf.phymode));
111DEBUGFS_READONLY_FILE(wep_iv, 20, "%#06x",
112 local->wep_iv & 0xffffff);
113DEBUGFS_READONLY_FILE(tx_power_reduction, 20, "%d.%d dBm",
114 local->hw.conf.tx_power_reduction / 10,
115 local->hw.conf.tx_power_reduction & 10);
116DEBUGFS_READONLY_FILE(rate_ctrl_alg, 100, "%s",
117 local->rate_ctrl ? local->rate_ctrl->ops->name : "<unset>");
118
119/* statistics stuff */
120
121static inline int rtnl_lock_local(struct ieee80211_local *local)
122{
123 rtnl_lock();
124 if (unlikely(local->reg_state != IEEE80211_DEV_REGISTERED)) {
125 rtnl_unlock();
126 return -ENODEV;
127 }
128 return 0;
129}
130
131#define DEBUGFS_STATS_FILE(name, buflen, fmt, value...) \
132 DEBUGFS_READONLY_FILE(stats_ ##name, buflen, fmt, ##value)
133
134static ssize_t format_devstat_counter(struct ieee80211_local *local,
135 char __user *userbuf,
136 size_t count, loff_t *ppos,
137 int (*printvalue)(struct ieee80211_low_level_stats *stats, char *buf,
138 int buflen))
139{
140 struct ieee80211_low_level_stats stats;
141 char buf[20];
142 int res;
143
144 if (!local->ops->get_stats)
145 return -EOPNOTSUPP;
146
147 res = rtnl_lock_local(local);
148 if (res)
149 return res;
150
151 res = local->ops->get_stats(local_to_hw(local), &stats);
152 rtnl_unlock();
153 if (!res)
154 res = printvalue(&stats, buf, sizeof(buf));
155 return simple_read_from_buffer(userbuf, count, ppos, buf, res);
156}
157
158#define DEBUGFS_DEVSTATS_FILE(name) \
159static int print_devstats_##name(struct ieee80211_low_level_stats *stats,\
160 char *buf, int buflen) \
161{ \
162 return scnprintf(buf, buflen, "%u\n", stats->name); \
163} \
164static ssize_t stats_ ##name## _read(struct file *file, \
165 char __user *userbuf, \
166 size_t count, loff_t *ppos) \
167{ \
168 return format_devstat_counter(file->private_data, \
169 userbuf, \
170 count, \
171 ppos, \
172 print_devstats_##name); \
173} \
174 \
175static const struct file_operations stats_ ##name## _ops = { \
176 .read = stats_ ##name## _read, \
177 .open = mac80211_open_file_generic, \
178};
179
180#define DEBUGFS_STATS_ADD(name) \
181 local->debugfs.stats.name = debugfs_create_file(#name, 0444, statsd,\
182 local, &stats_ ##name## _ops);
183
184#define DEBUGFS_STATS_DEL(name) \
185 debugfs_remove(local->debugfs.stats.name); \
186 local->debugfs.stats.name = NULL;
187
188DEBUGFS_STATS_FILE(transmitted_fragment_count, 20, "%u",
189 local->dot11TransmittedFragmentCount);
190DEBUGFS_STATS_FILE(multicast_transmitted_frame_count, 20, "%u",
191 local->dot11MulticastTransmittedFrameCount);
192DEBUGFS_STATS_FILE(failed_count, 20, "%u",
193 local->dot11FailedCount);
194DEBUGFS_STATS_FILE(retry_count, 20, "%u",
195 local->dot11RetryCount);
196DEBUGFS_STATS_FILE(multiple_retry_count, 20, "%u",
197 local->dot11MultipleRetryCount);
198DEBUGFS_STATS_FILE(frame_duplicate_count, 20, "%u",
199 local->dot11FrameDuplicateCount);
200DEBUGFS_STATS_FILE(received_fragment_count, 20, "%u",
201 local->dot11ReceivedFragmentCount);
202DEBUGFS_STATS_FILE(multicast_received_frame_count, 20, "%u",
203 local->dot11MulticastReceivedFrameCount);
204DEBUGFS_STATS_FILE(transmitted_frame_count, 20, "%u",
205 local->dot11TransmittedFrameCount);
206DEBUGFS_STATS_FILE(wep_undecryptable_count, 20, "%u",
207 local->dot11WEPUndecryptableCount);
208#ifdef CONFIG_MAC80211_DEBUG_COUNTERS
209DEBUGFS_STATS_FILE(tx_handlers_drop, 20, "%u",
210 local->tx_handlers_drop);
211DEBUGFS_STATS_FILE(tx_handlers_queued, 20, "%u",
212 local->tx_handlers_queued);
213DEBUGFS_STATS_FILE(tx_handlers_drop_unencrypted, 20, "%u",
214 local->tx_handlers_drop_unencrypted);
215DEBUGFS_STATS_FILE(tx_handlers_drop_fragment, 20, "%u",
216 local->tx_handlers_drop_fragment);
217DEBUGFS_STATS_FILE(tx_handlers_drop_wep, 20, "%u",
218 local->tx_handlers_drop_wep);
219DEBUGFS_STATS_FILE(tx_handlers_drop_not_assoc, 20, "%u",
220 local->tx_handlers_drop_not_assoc);
221DEBUGFS_STATS_FILE(tx_handlers_drop_unauth_port, 20, "%u",
222 local->tx_handlers_drop_unauth_port);
223DEBUGFS_STATS_FILE(rx_handlers_drop, 20, "%u",
224 local->rx_handlers_drop);
225DEBUGFS_STATS_FILE(rx_handlers_queued, 20, "%u",
226 local->rx_handlers_queued);
227DEBUGFS_STATS_FILE(rx_handlers_drop_nullfunc, 20, "%u",
228 local->rx_handlers_drop_nullfunc);
229DEBUGFS_STATS_FILE(rx_handlers_drop_defrag, 20, "%u",
230 local->rx_handlers_drop_defrag);
231DEBUGFS_STATS_FILE(rx_handlers_drop_short, 20, "%u",
232 local->rx_handlers_drop_short);
233DEBUGFS_STATS_FILE(rx_handlers_drop_passive_scan, 20, "%u",
234 local->rx_handlers_drop_passive_scan);
235DEBUGFS_STATS_FILE(tx_expand_skb_head, 20, "%u",
236 local->tx_expand_skb_head);
237DEBUGFS_STATS_FILE(tx_expand_skb_head_cloned, 20, "%u",
238 local->tx_expand_skb_head_cloned);
239DEBUGFS_STATS_FILE(rx_expand_skb_head, 20, "%u",
240 local->rx_expand_skb_head);
241DEBUGFS_STATS_FILE(rx_expand_skb_head2, 20, "%u",
242 local->rx_expand_skb_head2);
243DEBUGFS_STATS_FILE(rx_handlers_fragments, 20, "%u",
244 local->rx_handlers_fragments);
245DEBUGFS_STATS_FILE(tx_status_drop, 20, "%u",
246 local->tx_status_drop);
247
248static ssize_t stats_wme_rx_queue_read(struct file *file,
249 char __user *userbuf,
250 size_t count, loff_t *ppos)
251{
252 struct ieee80211_local *local = file->private_data;
253 char buf[NUM_RX_DATA_QUEUES*15], *p = buf;
254 int i;
255
256 for (i = 0; i < NUM_RX_DATA_QUEUES; i++)
257 p += scnprintf(p, sizeof(buf)+buf-p,
258 "%u\n", local->wme_rx_queue[i]);
259
260 return simple_read_from_buffer(userbuf, count, ppos, buf, p-buf);
261}
262
263static const struct file_operations stats_wme_rx_queue_ops = {
264 .read = stats_wme_rx_queue_read,
265 .open = mac80211_open_file_generic,
266};
267
268static ssize_t stats_wme_tx_queue_read(struct file *file,
269 char __user *userbuf,
270 size_t count, loff_t *ppos)
271{
272 struct ieee80211_local *local = file->private_data;
273 char buf[NUM_TX_DATA_QUEUES*15], *p = buf;
274 int i;
275
276 for (i = 0; i < NUM_TX_DATA_QUEUES; i++)
277 p += scnprintf(p, sizeof(buf)+buf-p,
278 "%u\n", local->wme_tx_queue[i]);
279
280 return simple_read_from_buffer(userbuf, count, ppos, buf, p-buf);
281}
282
283static const struct file_operations stats_wme_tx_queue_ops = {
284 .read = stats_wme_tx_queue_read,
285 .open = mac80211_open_file_generic,
286};
287#endif
288
289DEBUGFS_DEVSTATS_FILE(dot11ACKFailureCount);
290DEBUGFS_DEVSTATS_FILE(dot11RTSFailureCount);
291DEBUGFS_DEVSTATS_FILE(dot11FCSErrorCount);
292DEBUGFS_DEVSTATS_FILE(dot11RTSSuccessCount);
293
294
295void debugfs_hw_add(struct ieee80211_local *local)
296{
297 struct dentry *phyd = local->hw.wiphy->debugfsdir;
298 struct dentry *statsd;
299
300 if (!phyd)
301 return;
302
303 local->debugfs.stations = debugfs_create_dir("stations", phyd);
304 local->debugfs.keys = debugfs_create_dir("keys", phyd);
305
306 DEBUGFS_ADD(channel);
307 DEBUGFS_ADD(frequency);
308 DEBUGFS_ADD(radar_detect);
309 DEBUGFS_ADD(antenna_sel_tx);
310 DEBUGFS_ADD(antenna_sel_rx);
311 DEBUGFS_ADD(bridge_packets);
312 DEBUGFS_ADD(key_tx_rx_threshold);
313 DEBUGFS_ADD(rts_threshold);
314 DEBUGFS_ADD(fragmentation_threshold);
315 DEBUGFS_ADD(short_retry_limit);
316 DEBUGFS_ADD(long_retry_limit);
317 DEBUGFS_ADD(total_ps_buffered);
318 DEBUGFS_ADD(mode);
319 DEBUGFS_ADD(wep_iv);
320 DEBUGFS_ADD(tx_power_reduction);
321 DEBUGFS_ADD(modes);
322
323 statsd = debugfs_create_dir("statistics", phyd);
324 local->debugfs.statistics = statsd;
325
326 /* if the dir failed, don't put all the other things into the root! */
327 if (!statsd)
328 return;
329
330 DEBUGFS_STATS_ADD(transmitted_fragment_count);
331 DEBUGFS_STATS_ADD(multicast_transmitted_frame_count);
332 DEBUGFS_STATS_ADD(failed_count);
333 DEBUGFS_STATS_ADD(retry_count);
334 DEBUGFS_STATS_ADD(multiple_retry_count);
335 DEBUGFS_STATS_ADD(frame_duplicate_count);
336 DEBUGFS_STATS_ADD(received_fragment_count);
337 DEBUGFS_STATS_ADD(multicast_received_frame_count);
338 DEBUGFS_STATS_ADD(transmitted_frame_count);
339 DEBUGFS_STATS_ADD(wep_undecryptable_count);
340#ifdef CONFIG_MAC80211_DEBUG_COUNTERS
341 DEBUGFS_STATS_ADD(tx_handlers_drop);
342 DEBUGFS_STATS_ADD(tx_handlers_queued);
343 DEBUGFS_STATS_ADD(tx_handlers_drop_unencrypted);
344 DEBUGFS_STATS_ADD(tx_handlers_drop_fragment);
345 DEBUGFS_STATS_ADD(tx_handlers_drop_wep);
346 DEBUGFS_STATS_ADD(tx_handlers_drop_not_assoc);
347 DEBUGFS_STATS_ADD(tx_handlers_drop_unauth_port);
348 DEBUGFS_STATS_ADD(rx_handlers_drop);
349 DEBUGFS_STATS_ADD(rx_handlers_queued);
350 DEBUGFS_STATS_ADD(rx_handlers_drop_nullfunc);
351 DEBUGFS_STATS_ADD(rx_handlers_drop_defrag);
352 DEBUGFS_STATS_ADD(rx_handlers_drop_short);
353 DEBUGFS_STATS_ADD(rx_handlers_drop_passive_scan);
354 DEBUGFS_STATS_ADD(tx_expand_skb_head);
355 DEBUGFS_STATS_ADD(tx_expand_skb_head_cloned);
356 DEBUGFS_STATS_ADD(rx_expand_skb_head);
357 DEBUGFS_STATS_ADD(rx_expand_skb_head2);
358 DEBUGFS_STATS_ADD(rx_handlers_fragments);
359 DEBUGFS_STATS_ADD(tx_status_drop);
360 DEBUGFS_STATS_ADD(wme_tx_queue);
361 DEBUGFS_STATS_ADD(wme_rx_queue);
362#endif
363 DEBUGFS_STATS_ADD(dot11ACKFailureCount);
364 DEBUGFS_STATS_ADD(dot11RTSFailureCount);
365 DEBUGFS_STATS_ADD(dot11FCSErrorCount);
366 DEBUGFS_STATS_ADD(dot11RTSSuccessCount);
367}
368
369void debugfs_hw_del(struct ieee80211_local *local)
370{
371 DEBUGFS_DEL(channel);
372 DEBUGFS_DEL(frequency);
373 DEBUGFS_DEL(radar_detect);
374 DEBUGFS_DEL(antenna_sel_tx);
375 DEBUGFS_DEL(antenna_sel_rx);
376 DEBUGFS_DEL(bridge_packets);
377 DEBUGFS_DEL(key_tx_rx_threshold);
378 DEBUGFS_DEL(rts_threshold);
379 DEBUGFS_DEL(fragmentation_threshold);
380 DEBUGFS_DEL(short_retry_limit);
381 DEBUGFS_DEL(long_retry_limit);
382 DEBUGFS_DEL(total_ps_buffered);
383 DEBUGFS_DEL(mode);
384 DEBUGFS_DEL(wep_iv);
385 DEBUGFS_DEL(tx_power_reduction);
386 DEBUGFS_DEL(modes);
387
388 DEBUGFS_STATS_DEL(transmitted_fragment_count);
389 DEBUGFS_STATS_DEL(multicast_transmitted_frame_count);
390 DEBUGFS_STATS_DEL(failed_count);
391 DEBUGFS_STATS_DEL(retry_count);
392 DEBUGFS_STATS_DEL(multiple_retry_count);
393 DEBUGFS_STATS_DEL(frame_duplicate_count);
394 DEBUGFS_STATS_DEL(received_fragment_count);
395 DEBUGFS_STATS_DEL(multicast_received_frame_count);
396 DEBUGFS_STATS_DEL(transmitted_frame_count);
397 DEBUGFS_STATS_DEL(wep_undecryptable_count);
398 DEBUGFS_STATS_DEL(num_scans);
399#ifdef CONFIG_MAC80211_DEBUG_COUNTERS
400 DEBUGFS_STATS_DEL(tx_handlers_drop);
401 DEBUGFS_STATS_DEL(tx_handlers_queued);
402 DEBUGFS_STATS_DEL(tx_handlers_drop_unencrypted);
403 DEBUGFS_STATS_DEL(tx_handlers_drop_fragment);
404 DEBUGFS_STATS_DEL(tx_handlers_drop_wep);
405 DEBUGFS_STATS_DEL(tx_handlers_drop_not_assoc);
406 DEBUGFS_STATS_DEL(tx_handlers_drop_unauth_port);
407 DEBUGFS_STATS_DEL(rx_handlers_drop);
408 DEBUGFS_STATS_DEL(rx_handlers_queued);
409 DEBUGFS_STATS_DEL(rx_handlers_drop_nullfunc);
410 DEBUGFS_STATS_DEL(rx_handlers_drop_defrag);
411 DEBUGFS_STATS_DEL(rx_handlers_drop_short);
412 DEBUGFS_STATS_DEL(rx_handlers_drop_passive_scan);
413 DEBUGFS_STATS_DEL(tx_expand_skb_head);
414 DEBUGFS_STATS_DEL(tx_expand_skb_head_cloned);
415 DEBUGFS_STATS_DEL(rx_expand_skb_head);
416 DEBUGFS_STATS_DEL(rx_expand_skb_head2);
417 DEBUGFS_STATS_DEL(rx_handlers_fragments);
418 DEBUGFS_STATS_DEL(tx_status_drop);
419 DEBUGFS_STATS_DEL(wme_tx_queue);
420 DEBUGFS_STATS_DEL(wme_rx_queue);
421#endif
422 DEBUGFS_STATS_DEL(dot11ACKFailureCount);
423 DEBUGFS_STATS_DEL(dot11RTSFailureCount);
424 DEBUGFS_STATS_DEL(dot11FCSErrorCount);
425 DEBUGFS_STATS_DEL(dot11RTSSuccessCount);
426
427 debugfs_remove(local->debugfs.statistics);
428 local->debugfs.statistics = NULL;
429 debugfs_remove(local->debugfs.stations);
430 local->debugfs.stations = NULL;
431 debugfs_remove(local->debugfs.keys);
432 local->debugfs.keys = NULL;
433}
generated by cgit v1.2.2 (git 2.25.0) at 2025-10-31 11:20:15 -0400