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1/*
2 BlueZ - Bluetooth protocol stack for Linux
3
4 Copyright (C) 2014 Intel Corporation
5
6 This program is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License version 2 as
8 published by the Free Software Foundation;
9
10 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
11 OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
12 FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF THIRD PARTY RIGHTS.
13 IN NO EVENT SHALL THE COPYRIGHT HOLDER(S) AND AUTHOR(S) BE LIABLE FOR ANY
14 CLAIM, OR ANY SPECIAL INDIRECT OR CONSEQUENTIAL DAMAGES, OR ANY DAMAGES
15 WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
16 ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
17 OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
18
19 ALL LIABILITY, INCLUDING LIABILITY FOR INFRINGEMENT OF ANY PATENTS,
20 COPYRIGHTS, TRADEMARKS OR OTHER RIGHTS, RELATING TO USE OF THIS
21 SOFTWARE IS DISCLAIMED.
22*/
23
24#include <linux/debugfs.h>
25#include <linux/kstrtox.h>
26
27#include <net/bluetooth/bluetooth.h>
28#include <net/bluetooth/hci_core.h>
29
30#include "smp.h"
31#include "hci_request.h"
32#include "hci_debugfs.h"
33
34#define DEFINE_QUIRK_ATTRIBUTE(__name, __quirk) \
35static ssize_t __name ## _read(struct file *file, \
36 char __user *user_buf, \
37 size_t count, loff_t *ppos) \
38{ \
39 struct hci_dev *hdev = file->private_data; \
40 char buf[3]; \
41 \
42 buf[0] = test_bit(__quirk, &hdev->quirks) ? 'Y' : 'N'; \
43 buf[1] = '\n'; \
44 buf[2] = '\0'; \
45 return simple_read_from_buffer(user_buf, count, ppos, buf, 2); \
46} \
47 \
48static ssize_t __name ## _write(struct file *file, \
49 const char __user *user_buf, \
50 size_t count, loff_t *ppos) \
51{ \
52 struct hci_dev *hdev = file->private_data; \
53 bool enable; \
54 int err; \
55 \
56 if (test_bit(HCI_UP, &hdev->flags)) \
57 return -EBUSY; \
58 \
59 err = kstrtobool_from_user(user_buf, count, &enable); \
60 if (err) \
61 return err; \
62 \
63 if (enable == test_bit(__quirk, &hdev->quirks)) \
64 return -EALREADY; \
65 \
66 change_bit(__quirk, &hdev->quirks); \
67 \
68 return count; \
69} \
70 \
71static const struct file_operations __name ## _fops = { \
72 .open = simple_open, \
73 .read = __name ## _read, \
74 .write = __name ## _write, \
75 .llseek = default_llseek, \
76} \
77
78#define DEFINE_INFO_ATTRIBUTE(__name, __field) \
79static int __name ## _show(struct seq_file *f, void *ptr) \
80{ \
81 struct hci_dev *hdev = f->private; \
82 \
83 hci_dev_lock(hdev); \
84 seq_printf(f, "%s\n", hdev->__field ? : ""); \
85 hci_dev_unlock(hdev); \
86 \
87 return 0; \
88} \
89 \
90DEFINE_SHOW_ATTRIBUTE(__name)
91
92static int features_show(struct seq_file *f, void *ptr)
93{
94 struct hci_dev *hdev = f->private;
95 u8 p;
96
97 hci_dev_lock(hdev);
98 for (p = 0; p < HCI_MAX_PAGES && p <= hdev->max_page; p++)
99 seq_printf(f, "%2u: %8ph\n", p, hdev->features[p]);
100 if (lmp_le_capable(hdev))
101 seq_printf(f, "LE: %8ph\n", hdev->le_features);
102 hci_dev_unlock(hdev);
103
104 return 0;
105}
106
107DEFINE_SHOW_ATTRIBUTE(features);
108
109static int device_id_show(struct seq_file *f, void *ptr)
110{
111 struct hci_dev *hdev = f->private;
112
113 hci_dev_lock(hdev);
114 seq_printf(f, "%4.4x:%4.4x:%4.4x:%4.4x\n", hdev->devid_source,
115 hdev->devid_vendor, hdev->devid_product, hdev->devid_version);
116 hci_dev_unlock(hdev);
117
118 return 0;
119}
120
121DEFINE_SHOW_ATTRIBUTE(device_id);
122
123static int device_list_show(struct seq_file *f, void *ptr)
124{
125 struct hci_dev *hdev = f->private;
126 struct hci_conn_params *p;
127 struct bdaddr_list *b;
128
129 hci_dev_lock(hdev);
130 list_for_each_entry(b, &hdev->accept_list, list)
131 seq_printf(f, "%pMR (type %u)\n", &b->bdaddr, b->bdaddr_type);
132 list_for_each_entry(p, &hdev->le_conn_params, list) {
133 seq_printf(f, "%pMR (type %u) %u\n", &p->addr, p->addr_type,
134 p->auto_connect);
135 }
136 hci_dev_unlock(hdev);
137
138 return 0;
139}
140
141DEFINE_SHOW_ATTRIBUTE(device_list);
142
143static int blacklist_show(struct seq_file *f, void *p)
144{
145 struct hci_dev *hdev = f->private;
146 struct bdaddr_list *b;
147
148 hci_dev_lock(hdev);
149 list_for_each_entry(b, &hdev->reject_list, list)
150 seq_printf(f, "%pMR (type %u)\n", &b->bdaddr, b->bdaddr_type);
151 hci_dev_unlock(hdev);
152
153 return 0;
154}
155
156DEFINE_SHOW_ATTRIBUTE(blacklist);
157
158static int blocked_keys_show(struct seq_file *f, void *p)
159{
160 struct hci_dev *hdev = f->private;
161 struct blocked_key *key;
162
163 rcu_read_lock();
164 list_for_each_entry_rcu(key, &hdev->blocked_keys, list)
165 seq_printf(f, "%u %*phN\n", key->type, 16, key->val);
166 rcu_read_unlock();
167
168 return 0;
169}
170
171DEFINE_SHOW_ATTRIBUTE(blocked_keys);
172
173static int uuids_show(struct seq_file *f, void *p)
174{
175 struct hci_dev *hdev = f->private;
176 struct bt_uuid *uuid;
177
178 hci_dev_lock(hdev);
179 list_for_each_entry(uuid, &hdev->uuids, list) {
180 u8 i, val[16];
181
182 /* The Bluetooth UUID values are stored in big endian,
183 * but with reversed byte order. So convert them into
184 * the right order for the %pUb modifier.
185 */
186 for (i = 0; i < 16; i++)
187 val[i] = uuid->uuid[15 - i];
188
189 seq_printf(f, "%pUb\n", val);
190 }
191 hci_dev_unlock(hdev);
192
193 return 0;
194}
195
196DEFINE_SHOW_ATTRIBUTE(uuids);
197
198static int remote_oob_show(struct seq_file *f, void *ptr)
199{
200 struct hci_dev *hdev = f->private;
201 struct oob_data *data;
202
203 hci_dev_lock(hdev);
204 list_for_each_entry(data, &hdev->remote_oob_data, list) {
205 seq_printf(f, "%pMR (type %u) %u %*phN %*phN %*phN %*phN\n",
206 &data->bdaddr, data->bdaddr_type, data->present,
207 16, data->hash192, 16, data->rand192,
208 16, data->hash256, 16, data->rand256);
209 }
210 hci_dev_unlock(hdev);
211
212 return 0;
213}
214
215DEFINE_SHOW_ATTRIBUTE(remote_oob);
216
217static int conn_info_min_age_set(void *data, u64 val)
218{
219 struct hci_dev *hdev = data;
220
221 if (val == 0 || val > hdev->conn_info_max_age)
222 return -EINVAL;
223
224 hci_dev_lock(hdev);
225 hdev->conn_info_min_age = val;
226 hci_dev_unlock(hdev);
227
228 return 0;
229}
230
231static int conn_info_min_age_get(void *data, u64 *val)
232{
233 struct hci_dev *hdev = data;
234
235 hci_dev_lock(hdev);
236 *val = hdev->conn_info_min_age;
237 hci_dev_unlock(hdev);
238
239 return 0;
240}
241
242DEFINE_DEBUGFS_ATTRIBUTE(conn_info_min_age_fops, conn_info_min_age_get,
243 conn_info_min_age_set, "%llu\n");
244
245static int conn_info_max_age_set(void *data, u64 val)
246{
247 struct hci_dev *hdev = data;
248
249 if (val == 0 || val < hdev->conn_info_min_age)
250 return -EINVAL;
251
252 hci_dev_lock(hdev);
253 hdev->conn_info_max_age = val;
254 hci_dev_unlock(hdev);
255
256 return 0;
257}
258
259static int conn_info_max_age_get(void *data, u64 *val)
260{
261 struct hci_dev *hdev = data;
262
263 hci_dev_lock(hdev);
264 *val = hdev->conn_info_max_age;
265 hci_dev_unlock(hdev);
266
267 return 0;
268}
269
270DEFINE_DEBUGFS_ATTRIBUTE(conn_info_max_age_fops, conn_info_max_age_get,
271 conn_info_max_age_set, "%llu\n");
272
273static ssize_t use_debug_keys_read(struct file *file, char __user *user_buf,
274 size_t count, loff_t *ppos)
275{
276 struct hci_dev *hdev = file->private_data;
277 char buf[3];
278
279 buf[0] = hci_dev_test_flag(hdev, HCI_USE_DEBUG_KEYS) ? 'Y' : 'N';
280 buf[1] = '\n';
281 buf[2] = '\0';
282 return simple_read_from_buffer(user_buf, count, ppos, buf, 2);
283}
284
285static const struct file_operations use_debug_keys_fops = {
286 .open = simple_open,
287 .read = use_debug_keys_read,
288 .llseek = default_llseek,
289};
290
291static ssize_t sc_only_mode_read(struct file *file, char __user *user_buf,
292 size_t count, loff_t *ppos)
293{
294 struct hci_dev *hdev = file->private_data;
295 char buf[3];
296
297 buf[0] = hci_dev_test_flag(hdev, HCI_SC_ONLY) ? 'Y' : 'N';
298 buf[1] = '\n';
299 buf[2] = '\0';
300 return simple_read_from_buffer(user_buf, count, ppos, buf, 2);
301}
302
303static const struct file_operations sc_only_mode_fops = {
304 .open = simple_open,
305 .read = sc_only_mode_read,
306 .llseek = default_llseek,
307};
308
309DEFINE_INFO_ATTRIBUTE(hardware_info, hw_info);
310DEFINE_INFO_ATTRIBUTE(firmware_info, fw_info);
311
312void hci_debugfs_create_common(struct hci_dev *hdev)
313{
314 debugfs_create_file("features", 0444, hdev->debugfs, hdev,
315 &features_fops);
316 debugfs_create_u16("manufacturer", 0444, hdev->debugfs,
317 &hdev->manufacturer);
318 debugfs_create_u8("hci_version", 0444, hdev->debugfs, &hdev->hci_ver);
319 debugfs_create_u16("hci_revision", 0444, hdev->debugfs, &hdev->hci_rev);
320 debugfs_create_u8("hardware_error", 0444, hdev->debugfs,
321 &hdev->hw_error_code);
322 debugfs_create_file("device_id", 0444, hdev->debugfs, hdev,
323 &device_id_fops);
324
325 debugfs_create_file("device_list", 0444, hdev->debugfs, hdev,
326 &device_list_fops);
327 debugfs_create_file("blacklist", 0444, hdev->debugfs, hdev,
328 &blacklist_fops);
329 debugfs_create_file("blocked_keys", 0444, hdev->debugfs, hdev,
330 &blocked_keys_fops);
331 debugfs_create_file("uuids", 0444, hdev->debugfs, hdev, &uuids_fops);
332 debugfs_create_file("remote_oob", 0400, hdev->debugfs, hdev,
333 &remote_oob_fops);
334
335 debugfs_create_file("conn_info_min_age", 0644, hdev->debugfs, hdev,
336 &conn_info_min_age_fops);
337 debugfs_create_file("conn_info_max_age", 0644, hdev->debugfs, hdev,
338 &conn_info_max_age_fops);
339
340 if (lmp_ssp_capable(hdev) || lmp_le_capable(hdev))
341 debugfs_create_file("use_debug_keys", 0444, hdev->debugfs,
342 hdev, &use_debug_keys_fops);
343
344 if (lmp_sc_capable(hdev) || lmp_le_capable(hdev))
345 debugfs_create_file("sc_only_mode", 0444, hdev->debugfs,
346 hdev, &sc_only_mode_fops);
347
348 if (hdev->hw_info)
349 debugfs_create_file("hardware_info", 0444, hdev->debugfs,
350 hdev, &hardware_info_fops);
351
352 if (hdev->fw_info)
353 debugfs_create_file("firmware_info", 0444, hdev->debugfs,
354 hdev, &firmware_info_fops);
355}
356
357static int inquiry_cache_show(struct seq_file *f, void *p)
358{
359 struct hci_dev *hdev = f->private;
360 struct discovery_state *cache = &hdev->discovery;
361 struct inquiry_entry *e;
362
363 hci_dev_lock(hdev);
364
365 list_for_each_entry(e, &cache->all, all) {
366 struct inquiry_data *data = &e->data;
367 seq_printf(f, "%pMR %d %d %d 0x%.2x%.2x%.2x 0x%.4x %d %d %u\n",
368 &data->bdaddr,
369 data->pscan_rep_mode, data->pscan_period_mode,
370 data->pscan_mode, data->dev_class[2],
371 data->dev_class[1], data->dev_class[0],
372 __le16_to_cpu(data->clock_offset),
373 data->rssi, data->ssp_mode, e->timestamp);
374 }
375
376 hci_dev_unlock(hdev);
377
378 return 0;
379}
380
381DEFINE_SHOW_ATTRIBUTE(inquiry_cache);
382
383static int link_keys_show(struct seq_file *f, void *ptr)
384{
385 struct hci_dev *hdev = f->private;
386 struct link_key *key;
387
388 rcu_read_lock();
389 list_for_each_entry_rcu(key, &hdev->link_keys, list)
390 seq_printf(f, "%pMR %u %*phN %u\n", &key->bdaddr, key->type,
391 HCI_LINK_KEY_SIZE, key->val, key->pin_len);
392 rcu_read_unlock();
393
394 return 0;
395}
396
397DEFINE_SHOW_ATTRIBUTE(link_keys);
398
399static int dev_class_show(struct seq_file *f, void *ptr)
400{
401 struct hci_dev *hdev = f->private;
402
403 hci_dev_lock(hdev);
404 seq_printf(f, "0x%.2x%.2x%.2x\n", hdev->dev_class[2],
405 hdev->dev_class[1], hdev->dev_class[0]);
406 hci_dev_unlock(hdev);
407
408 return 0;
409}
410
411DEFINE_SHOW_ATTRIBUTE(dev_class);
412
413static int voice_setting_get(void *data, u64 *val)
414{
415 struct hci_dev *hdev = data;
416
417 hci_dev_lock(hdev);
418 *val = hdev->voice_setting;
419 hci_dev_unlock(hdev);
420
421 return 0;
422}
423
424DEFINE_DEBUGFS_ATTRIBUTE(voice_setting_fops, voice_setting_get,
425 NULL, "0x%4.4llx\n");
426
427static ssize_t ssp_debug_mode_read(struct file *file, char __user *user_buf,
428 size_t count, loff_t *ppos)
429{
430 struct hci_dev *hdev = file->private_data;
431 char buf[3];
432
433 buf[0] = hdev->ssp_debug_mode ? 'Y' : 'N';
434 buf[1] = '\n';
435 buf[2] = '\0';
436 return simple_read_from_buffer(user_buf, count, ppos, buf, 2);
437}
438
439static const struct file_operations ssp_debug_mode_fops = {
440 .open = simple_open,
441 .read = ssp_debug_mode_read,
442 .llseek = default_llseek,
443};
444
445static int auto_accept_delay_set(void *data, u64 val)
446{
447 struct hci_dev *hdev = data;
448
449 hci_dev_lock(hdev);
450 hdev->auto_accept_delay = val;
451 hci_dev_unlock(hdev);
452
453 return 0;
454}
455
456static int min_encrypt_key_size_set(void *data, u64 val)
457{
458 struct hci_dev *hdev = data;
459
460 if (val < 1 || val > 16)
461 return -EINVAL;
462
463 hci_dev_lock(hdev);
464 hdev->min_enc_key_size = val;
465 hci_dev_unlock(hdev);
466
467 return 0;
468}
469
470static int min_encrypt_key_size_get(void *data, u64 *val)
471{
472 struct hci_dev *hdev = data;
473
474 hci_dev_lock(hdev);
475 *val = hdev->min_enc_key_size;
476 hci_dev_unlock(hdev);
477
478 return 0;
479}
480
481DEFINE_DEBUGFS_ATTRIBUTE(min_encrypt_key_size_fops,
482 min_encrypt_key_size_get,
483 min_encrypt_key_size_set, "%llu\n");
484
485static int auto_accept_delay_get(void *data, u64 *val)
486{
487 struct hci_dev *hdev = data;
488
489 hci_dev_lock(hdev);
490 *val = hdev->auto_accept_delay;
491 hci_dev_unlock(hdev);
492
493 return 0;
494}
495
496DEFINE_DEBUGFS_ATTRIBUTE(auto_accept_delay_fops, auto_accept_delay_get,
497 auto_accept_delay_set, "%llu\n");
498
499static ssize_t force_bredr_smp_read(struct file *file,
500 char __user *user_buf,
501 size_t count, loff_t *ppos)
502{
503 struct hci_dev *hdev = file->private_data;
504 char buf[3];
505
506 buf[0] = hci_dev_test_flag(hdev, HCI_FORCE_BREDR_SMP) ? 'Y' : 'N';
507 buf[1] = '\n';
508 buf[2] = '\0';
509 return simple_read_from_buffer(user_buf, count, ppos, buf, 2);
510}
511
512static ssize_t force_bredr_smp_write(struct file *file,
513 const char __user *user_buf,
514 size_t count, loff_t *ppos)
515{
516 struct hci_dev *hdev = file->private_data;
517 bool enable;
518 int err;
519
520 err = kstrtobool_from_user(user_buf, count, &enable);
521 if (err)
522 return err;
523
524 err = smp_force_bredr(hdev, enable);
525 if (err)
526 return err;
527
528 return count;
529}
530
531static const struct file_operations force_bredr_smp_fops = {
532 .open = simple_open,
533 .read = force_bredr_smp_read,
534 .write = force_bredr_smp_write,
535 .llseek = default_llseek,
536};
537
538static int idle_timeout_set(void *data, u64 val)
539{
540 struct hci_dev *hdev = data;
541
542 if (val != 0 && (val < 500 || val > 3600000))
543 return -EINVAL;
544
545 hci_dev_lock(hdev);
546 hdev->idle_timeout = val;
547 hci_dev_unlock(hdev);
548
549 return 0;
550}
551
552static int idle_timeout_get(void *data, u64 *val)
553{
554 struct hci_dev *hdev = data;
555
556 hci_dev_lock(hdev);
557 *val = hdev->idle_timeout;
558 hci_dev_unlock(hdev);
559
560 return 0;
561}
562
563DEFINE_DEBUGFS_ATTRIBUTE(idle_timeout_fops, idle_timeout_get,
564 idle_timeout_set, "%llu\n");
565
566static int sniff_min_interval_set(void *data, u64 val)
567{
568 struct hci_dev *hdev = data;
569
570 if (val == 0 || val % 2 || val > hdev->sniff_max_interval)
571 return -EINVAL;
572
573 hci_dev_lock(hdev);
574 hdev->sniff_min_interval = val;
575 hci_dev_unlock(hdev);
576
577 return 0;
578}
579
580static int sniff_min_interval_get(void *data, u64 *val)
581{
582 struct hci_dev *hdev = data;
583
584 hci_dev_lock(hdev);
585 *val = hdev->sniff_min_interval;
586 hci_dev_unlock(hdev);
587
588 return 0;
589}
590
591DEFINE_DEBUGFS_ATTRIBUTE(sniff_min_interval_fops, sniff_min_interval_get,
592 sniff_min_interval_set, "%llu\n");
593
594static int sniff_max_interval_set(void *data, u64 val)
595{
596 struct hci_dev *hdev = data;
597
598 if (val == 0 || val % 2 || val < hdev->sniff_min_interval)
599 return -EINVAL;
600
601 hci_dev_lock(hdev);
602 hdev->sniff_max_interval = val;
603 hci_dev_unlock(hdev);
604
605 return 0;
606}
607
608static int sniff_max_interval_get(void *data, u64 *val)
609{
610 struct hci_dev *hdev = data;
611
612 hci_dev_lock(hdev);
613 *val = hdev->sniff_max_interval;
614 hci_dev_unlock(hdev);
615
616 return 0;
617}
618
619DEFINE_DEBUGFS_ATTRIBUTE(sniff_max_interval_fops, sniff_max_interval_get,
620 sniff_max_interval_set, "%llu\n");
621
622void hci_debugfs_create_bredr(struct hci_dev *hdev)
623{
624 debugfs_create_file("inquiry_cache", 0444, hdev->debugfs, hdev,
625 &inquiry_cache_fops);
626 debugfs_create_file("link_keys", 0400, hdev->debugfs, hdev,
627 &link_keys_fops);
628 debugfs_create_file("dev_class", 0444, hdev->debugfs, hdev,
629 &dev_class_fops);
630 debugfs_create_file("voice_setting", 0444, hdev->debugfs, hdev,
631 &voice_setting_fops);
632
633 /* If the controller does not support BR/EDR Secure Connections
634 * feature, then the BR/EDR SMP channel shall not be present.
635 *
636 * To test this with Bluetooth 4.0 controllers, create a debugfs
637 * switch that allows forcing BR/EDR SMP support and accepting
638 * cross-transport pairing on non-AES encrypted connections.
639 */
640 if (!lmp_sc_capable(hdev))
641 debugfs_create_file("force_bredr_smp", 0644, hdev->debugfs,
642 hdev, &force_bredr_smp_fops);
643
644 if (lmp_ssp_capable(hdev)) {
645 debugfs_create_file("ssp_debug_mode", 0444, hdev->debugfs,
646 hdev, &ssp_debug_mode_fops);
647 debugfs_create_file("min_encrypt_key_size", 0644, hdev->debugfs,
648 hdev, &min_encrypt_key_size_fops);
649 debugfs_create_file("auto_accept_delay", 0644, hdev->debugfs,
650 hdev, &auto_accept_delay_fops);
651 }
652
653 if (lmp_sniff_capable(hdev)) {
654 debugfs_create_file("idle_timeout", 0644, hdev->debugfs,
655 hdev, &idle_timeout_fops);
656 debugfs_create_file("sniff_min_interval", 0644, hdev->debugfs,
657 hdev, &sniff_min_interval_fops);
658 debugfs_create_file("sniff_max_interval", 0644, hdev->debugfs,
659 hdev, &sniff_max_interval_fops);
660 }
661}
662
663static int identity_show(struct seq_file *f, void *p)
664{
665 struct hci_dev *hdev = f->private;
666 bdaddr_t addr;
667 u8 addr_type;
668
669 hci_dev_lock(hdev);
670
671 hci_copy_identity_address(hdev, &addr, &addr_type);
672
673 seq_printf(f, "%pMR (type %u) %*phN %pMR\n", &addr, addr_type,
674 16, hdev->irk, &hdev->rpa);
675
676 hci_dev_unlock(hdev);
677
678 return 0;
679}
680
681DEFINE_SHOW_ATTRIBUTE(identity);
682
683static int rpa_timeout_set(void *data, u64 val)
684{
685 struct hci_dev *hdev = data;
686
687 /* Require the RPA timeout to be at least 30 seconds and at most
688 * 24 hours.
689 */
690 if (val < 30 || val > (60 * 60 * 24))
691 return -EINVAL;
692
693 hci_dev_lock(hdev);
694 hdev->rpa_timeout = val;
695 hci_dev_unlock(hdev);
696
697 return 0;
698}
699
700static int rpa_timeout_get(void *data, u64 *val)
701{
702 struct hci_dev *hdev = data;
703
704 hci_dev_lock(hdev);
705 *val = hdev->rpa_timeout;
706 hci_dev_unlock(hdev);
707
708 return 0;
709}
710
711DEFINE_DEBUGFS_ATTRIBUTE(rpa_timeout_fops, rpa_timeout_get,
712 rpa_timeout_set, "%llu\n");
713
714static int random_address_show(struct seq_file *f, void *p)
715{
716 struct hci_dev *hdev = f->private;
717
718 hci_dev_lock(hdev);
719 seq_printf(f, "%pMR\n", &hdev->random_addr);
720 hci_dev_unlock(hdev);
721
722 return 0;
723}
724
725DEFINE_SHOW_ATTRIBUTE(random_address);
726
727static int static_address_show(struct seq_file *f, void *p)
728{
729 struct hci_dev *hdev = f->private;
730
731 hci_dev_lock(hdev);
732 seq_printf(f, "%pMR\n", &hdev->static_addr);
733 hci_dev_unlock(hdev);
734
735 return 0;
736}
737
738DEFINE_SHOW_ATTRIBUTE(static_address);
739
740static ssize_t force_static_address_read(struct file *file,
741 char __user *user_buf,
742 size_t count, loff_t *ppos)
743{
744 struct hci_dev *hdev = file->private_data;
745 char buf[3];
746
747 buf[0] = hci_dev_test_flag(hdev, HCI_FORCE_STATIC_ADDR) ? 'Y' : 'N';
748 buf[1] = '\n';
749 buf[2] = '\0';
750 return simple_read_from_buffer(user_buf, count, ppos, buf, 2);
751}
752
753static ssize_t force_static_address_write(struct file *file,
754 const char __user *user_buf,
755 size_t count, loff_t *ppos)
756{
757 struct hci_dev *hdev = file->private_data;
758 bool enable;
759 int err;
760
761 if (hdev_is_powered(hdev))
762 return -EBUSY;
763
764 err = kstrtobool_from_user(user_buf, count, &enable);
765 if (err)
766 return err;
767
768 if (enable == hci_dev_test_flag(hdev, HCI_FORCE_STATIC_ADDR))
769 return -EALREADY;
770
771 hci_dev_change_flag(hdev, HCI_FORCE_STATIC_ADDR);
772
773 return count;
774}
775
776static const struct file_operations force_static_address_fops = {
777 .open = simple_open,
778 .read = force_static_address_read,
779 .write = force_static_address_write,
780 .llseek = default_llseek,
781};
782
783static int white_list_show(struct seq_file *f, void *ptr)
784{
785 struct hci_dev *hdev = f->private;
786 struct bdaddr_list *b;
787
788 hci_dev_lock(hdev);
789 list_for_each_entry(b, &hdev->le_accept_list, list)
790 seq_printf(f, "%pMR (type %u)\n", &b->bdaddr, b->bdaddr_type);
791 hci_dev_unlock(hdev);
792
793 return 0;
794}
795
796DEFINE_SHOW_ATTRIBUTE(white_list);
797
798static int resolv_list_show(struct seq_file *f, void *ptr)
799{
800 struct hci_dev *hdev = f->private;
801 struct bdaddr_list *b;
802
803 hci_dev_lock(hdev);
804 list_for_each_entry(b, &hdev->le_resolv_list, list)
805 seq_printf(f, "%pMR (type %u)\n", &b->bdaddr, b->bdaddr_type);
806 hci_dev_unlock(hdev);
807
808 return 0;
809}
810
811DEFINE_SHOW_ATTRIBUTE(resolv_list);
812
813static int identity_resolving_keys_show(struct seq_file *f, void *ptr)
814{
815 struct hci_dev *hdev = f->private;
816 struct smp_irk *irk;
817
818 rcu_read_lock();
819 list_for_each_entry_rcu(irk, &hdev->identity_resolving_keys, list) {
820 seq_printf(f, "%pMR (type %u) %*phN %pMR\n",
821 &irk->bdaddr, irk->addr_type,
822 16, irk->val, &irk->rpa);
823 }
824 rcu_read_unlock();
825
826 return 0;
827}
828
829DEFINE_SHOW_ATTRIBUTE(identity_resolving_keys);
830
831static int long_term_keys_show(struct seq_file *f, void *ptr)
832{
833 struct hci_dev *hdev = f->private;
834 struct smp_ltk *ltk;
835
836 rcu_read_lock();
837 list_for_each_entry_rcu(ltk, &hdev->long_term_keys, list)
838 seq_printf(f, "%pMR (type %u) %u 0x%02x %u %.4x %.16llx %*phN\n",
839 <k->bdaddr, ltk->bdaddr_type, ltk->authenticated,
840 ltk->type, ltk->enc_size, __le16_to_cpu(ltk->ediv),
841 __le64_to_cpu(ltk->rand), 16, ltk->val);
842 rcu_read_unlock();
843
844 return 0;
845}
846
847DEFINE_SHOW_ATTRIBUTE(long_term_keys);
848
849static int conn_min_interval_set(void *data, u64 val)
850{
851 struct hci_dev *hdev = data;
852
853 if (val < 0x0006 || val > 0x0c80 || val > hdev->le_conn_max_interval)
854 return -EINVAL;
855
856 hci_dev_lock(hdev);
857 hdev->le_conn_min_interval = val;
858 hci_dev_unlock(hdev);
859
860 return 0;
861}
862
863static int conn_min_interval_get(void *data, u64 *val)
864{
865 struct hci_dev *hdev = data;
866
867 hci_dev_lock(hdev);
868 *val = hdev->le_conn_min_interval;
869 hci_dev_unlock(hdev);
870
871 return 0;
872}
873
874DEFINE_DEBUGFS_ATTRIBUTE(conn_min_interval_fops, conn_min_interval_get,
875 conn_min_interval_set, "%llu\n");
876
877static int conn_max_interval_set(void *data, u64 val)
878{
879 struct hci_dev *hdev = data;
880
881 if (val < 0x0006 || val > 0x0c80 || val < hdev->le_conn_min_interval)
882 return -EINVAL;
883
884 hci_dev_lock(hdev);
885 hdev->le_conn_max_interval = val;
886 hci_dev_unlock(hdev);
887
888 return 0;
889}
890
891static int conn_max_interval_get(void *data, u64 *val)
892{
893 struct hci_dev *hdev = data;
894
895 hci_dev_lock(hdev);
896 *val = hdev->le_conn_max_interval;
897 hci_dev_unlock(hdev);
898
899 return 0;
900}
901
902DEFINE_DEBUGFS_ATTRIBUTE(conn_max_interval_fops, conn_max_interval_get,
903 conn_max_interval_set, "%llu\n");
904
905static int conn_latency_set(void *data, u64 val)
906{
907 struct hci_dev *hdev = data;
908
909 if (val > 0x01f3)
910 return -EINVAL;
911
912 hci_dev_lock(hdev);
913 hdev->le_conn_latency = val;
914 hci_dev_unlock(hdev);
915
916 return 0;
917}
918
919static int conn_latency_get(void *data, u64 *val)
920{
921 struct hci_dev *hdev = data;
922
923 hci_dev_lock(hdev);
924 *val = hdev->le_conn_latency;
925 hci_dev_unlock(hdev);
926
927 return 0;
928}
929
930DEFINE_DEBUGFS_ATTRIBUTE(conn_latency_fops, conn_latency_get,
931 conn_latency_set, "%llu\n");
932
933static int supervision_timeout_set(void *data, u64 val)
934{
935 struct hci_dev *hdev = data;
936
937 if (val < 0x000a || val > 0x0c80)
938 return -EINVAL;
939
940 hci_dev_lock(hdev);
941 hdev->le_supv_timeout = val;
942 hci_dev_unlock(hdev);
943
944 return 0;
945}
946
947static int supervision_timeout_get(void *data, u64 *val)
948{
949 struct hci_dev *hdev = data;
950
951 hci_dev_lock(hdev);
952 *val = hdev->le_supv_timeout;
953 hci_dev_unlock(hdev);
954
955 return 0;
956}
957
958DEFINE_DEBUGFS_ATTRIBUTE(supervision_timeout_fops, supervision_timeout_get,
959 supervision_timeout_set, "%llu\n");
960
961static int adv_channel_map_set(void *data, u64 val)
962{
963 struct hci_dev *hdev = data;
964
965 if (val < 0x01 || val > 0x07)
966 return -EINVAL;
967
968 hci_dev_lock(hdev);
969 hdev->le_adv_channel_map = val;
970 hci_dev_unlock(hdev);
971
972 return 0;
973}
974
975static int adv_channel_map_get(void *data, u64 *val)
976{
977 struct hci_dev *hdev = data;
978
979 hci_dev_lock(hdev);
980 *val = hdev->le_adv_channel_map;
981 hci_dev_unlock(hdev);
982
983 return 0;
984}
985
986DEFINE_DEBUGFS_ATTRIBUTE(adv_channel_map_fops, adv_channel_map_get,
987 adv_channel_map_set, "%llu\n");
988
989static int adv_min_interval_set(void *data, u64 val)
990{
991 struct hci_dev *hdev = data;
992
993 if (val < 0x0020 || val > 0x4000 || val > hdev->le_adv_max_interval)
994 return -EINVAL;
995
996 hci_dev_lock(hdev);
997 hdev->le_adv_min_interval = val;
998 hci_dev_unlock(hdev);
999
1000 return 0;
1001}
1002
1003static int adv_min_interval_get(void *data, u64 *val)
1004{
1005 struct hci_dev *hdev = data;
1006
1007 hci_dev_lock(hdev);
1008 *val = hdev->le_adv_min_interval;
1009 hci_dev_unlock(hdev);
1010
1011 return 0;
1012}
1013
1014DEFINE_DEBUGFS_ATTRIBUTE(adv_min_interval_fops, adv_min_interval_get,
1015 adv_min_interval_set, "%llu\n");
1016
1017static int adv_max_interval_set(void *data, u64 val)
1018{
1019 struct hci_dev *hdev = data;
1020
1021 if (val < 0x0020 || val > 0x4000 || val < hdev->le_adv_min_interval)
1022 return -EINVAL;
1023
1024 hci_dev_lock(hdev);
1025 hdev->le_adv_max_interval = val;
1026 hci_dev_unlock(hdev);
1027
1028 return 0;
1029}
1030
1031static int adv_max_interval_get(void *data, u64 *val)
1032{
1033 struct hci_dev *hdev = data;
1034
1035 hci_dev_lock(hdev);
1036 *val = hdev->le_adv_max_interval;
1037 hci_dev_unlock(hdev);
1038
1039 return 0;
1040}
1041
1042DEFINE_DEBUGFS_ATTRIBUTE(adv_max_interval_fops, adv_max_interval_get,
1043 adv_max_interval_set, "%llu\n");
1044
1045static int min_key_size_set(void *data, u64 val)
1046{
1047 struct hci_dev *hdev = data;
1048
1049 hci_dev_lock(hdev);
1050 if (val > hdev->le_max_key_size || val < SMP_MIN_ENC_KEY_SIZE) {
1051 hci_dev_unlock(hdev);
1052 return -EINVAL;
1053 }
1054
1055 hdev->le_min_key_size = val;
1056 hci_dev_unlock(hdev);
1057
1058 return 0;
1059}
1060
1061static int min_key_size_get(void *data, u64 *val)
1062{
1063 struct hci_dev *hdev = data;
1064
1065 hci_dev_lock(hdev);
1066 *val = hdev->le_min_key_size;
1067 hci_dev_unlock(hdev);
1068
1069 return 0;
1070}
1071
1072DEFINE_DEBUGFS_ATTRIBUTE(min_key_size_fops, min_key_size_get,
1073 min_key_size_set, "%llu\n");
1074
1075static int max_key_size_set(void *data, u64 val)
1076{
1077 struct hci_dev *hdev = data;
1078
1079 hci_dev_lock(hdev);
1080 if (val > SMP_MAX_ENC_KEY_SIZE || val < hdev->le_min_key_size) {
1081 hci_dev_unlock(hdev);
1082 return -EINVAL;
1083 }
1084
1085 hdev->le_max_key_size = val;
1086 hci_dev_unlock(hdev);
1087
1088 return 0;
1089}
1090
1091static int max_key_size_get(void *data, u64 *val)
1092{
1093 struct hci_dev *hdev = data;
1094
1095 hci_dev_lock(hdev);
1096 *val = hdev->le_max_key_size;
1097 hci_dev_unlock(hdev);
1098
1099 return 0;
1100}
1101
1102DEFINE_DEBUGFS_ATTRIBUTE(max_key_size_fops, max_key_size_get,
1103 max_key_size_set, "%llu\n");
1104
1105static int auth_payload_timeout_set(void *data, u64 val)
1106{
1107 struct hci_dev *hdev = data;
1108
1109 if (val < 0x0001 || val > 0xffff)
1110 return -EINVAL;
1111
1112 hci_dev_lock(hdev);
1113 hdev->auth_payload_timeout = val;
1114 hci_dev_unlock(hdev);
1115
1116 return 0;
1117}
1118
1119static int auth_payload_timeout_get(void *data, u64 *val)
1120{
1121 struct hci_dev *hdev = data;
1122
1123 hci_dev_lock(hdev);
1124 *val = hdev->auth_payload_timeout;
1125 hci_dev_unlock(hdev);
1126
1127 return 0;
1128}
1129
1130DEFINE_DEBUGFS_ATTRIBUTE(auth_payload_timeout_fops,
1131 auth_payload_timeout_get,
1132 auth_payload_timeout_set, "%llu\n");
1133
1134static ssize_t force_no_mitm_read(struct file *file,
1135 char __user *user_buf,
1136 size_t count, loff_t *ppos)
1137{
1138 struct hci_dev *hdev = file->private_data;
1139 char buf[3];
1140
1141 buf[0] = hci_dev_test_flag(hdev, HCI_FORCE_NO_MITM) ? 'Y' : 'N';
1142 buf[1] = '\n';
1143 buf[2] = '\0';
1144 return simple_read_from_buffer(user_buf, count, ppos, buf, 2);
1145}
1146
1147static ssize_t force_no_mitm_write(struct file *file,
1148 const char __user *user_buf,
1149 size_t count, loff_t *ppos)
1150{
1151 struct hci_dev *hdev = file->private_data;
1152 char buf[32];
1153 size_t buf_size = min(count, (sizeof(buf) - 1));
1154 bool enable;
1155
1156 if (copy_from_user(buf, user_buf, buf_size))
1157 return -EFAULT;
1158
1159 buf[buf_size] = '\0';
1160 if (kstrtobool(buf, &enable))
1161 return -EINVAL;
1162
1163 if (enable == hci_dev_test_flag(hdev, HCI_FORCE_NO_MITM))
1164 return -EALREADY;
1165
1166 hci_dev_change_flag(hdev, HCI_FORCE_NO_MITM);
1167
1168 return count;
1169}
1170
1171static const struct file_operations force_no_mitm_fops = {
1172 .open = simple_open,
1173 .read = force_no_mitm_read,
1174 .write = force_no_mitm_write,
1175 .llseek = default_llseek,
1176};
1177
1178DEFINE_QUIRK_ATTRIBUTE(quirk_strict_duplicate_filter,
1179 HCI_QUIRK_STRICT_DUPLICATE_FILTER);
1180DEFINE_QUIRK_ATTRIBUTE(quirk_simultaneous_discovery,
1181 HCI_QUIRK_SIMULTANEOUS_DISCOVERY);
1182
1183void hci_debugfs_create_le(struct hci_dev *hdev)
1184{
1185 debugfs_create_file("identity", 0400, hdev->debugfs, hdev,
1186 &identity_fops);
1187 debugfs_create_file("rpa_timeout", 0644, hdev->debugfs, hdev,
1188 &rpa_timeout_fops);
1189 debugfs_create_file("random_address", 0444, hdev->debugfs, hdev,
1190 &random_address_fops);
1191 debugfs_create_file("static_address", 0444, hdev->debugfs, hdev,
1192 &static_address_fops);
1193
1194 /* For controllers with a public address, provide a debug
1195 * option to force the usage of the configured static
1196 * address. By default the public address is used.
1197 */
1198 if (bacmp(&hdev->bdaddr, BDADDR_ANY))
1199 debugfs_create_file("force_static_address", 0644,
1200 hdev->debugfs, hdev,
1201 &force_static_address_fops);
1202
1203 debugfs_create_u8("white_list_size", 0444, hdev->debugfs,
1204 &hdev->le_accept_list_size);
1205 debugfs_create_file("white_list", 0444, hdev->debugfs, hdev,
1206 &white_list_fops);
1207 debugfs_create_u8("resolv_list_size", 0444, hdev->debugfs,
1208 &hdev->le_resolv_list_size);
1209 debugfs_create_file("resolv_list", 0444, hdev->debugfs, hdev,
1210 &resolv_list_fops);
1211 debugfs_create_file("identity_resolving_keys", 0400, hdev->debugfs,
1212 hdev, &identity_resolving_keys_fops);
1213 debugfs_create_file("long_term_keys", 0400, hdev->debugfs, hdev,
1214 &long_term_keys_fops);
1215 debugfs_create_file("conn_min_interval", 0644, hdev->debugfs, hdev,
1216 &conn_min_interval_fops);
1217 debugfs_create_file("conn_max_interval", 0644, hdev->debugfs, hdev,
1218 &conn_max_interval_fops);
1219 debugfs_create_file("conn_latency", 0644, hdev->debugfs, hdev,
1220 &conn_latency_fops);
1221 debugfs_create_file("supervision_timeout", 0644, hdev->debugfs, hdev,
1222 &supervision_timeout_fops);
1223 debugfs_create_file("adv_channel_map", 0644, hdev->debugfs, hdev,
1224 &adv_channel_map_fops);
1225 debugfs_create_file("adv_min_interval", 0644, hdev->debugfs, hdev,
1226 &adv_min_interval_fops);
1227 debugfs_create_file("adv_max_interval", 0644, hdev->debugfs, hdev,
1228 &adv_max_interval_fops);
1229 debugfs_create_u16("discov_interleaved_timeout", 0644, hdev->debugfs,
1230 &hdev->discov_interleaved_timeout);
1231 debugfs_create_file("min_key_size", 0644, hdev->debugfs, hdev,
1232 &min_key_size_fops);
1233 debugfs_create_file("max_key_size", 0644, hdev->debugfs, hdev,
1234 &max_key_size_fops);
1235 debugfs_create_file("auth_payload_timeout", 0644, hdev->debugfs, hdev,
1236 &auth_payload_timeout_fops);
1237 debugfs_create_file("force_no_mitm", 0644, hdev->debugfs, hdev,
1238 &force_no_mitm_fops);
1239
1240 debugfs_create_file("quirk_strict_duplicate_filter", 0644,
1241 hdev->debugfs, hdev,
1242 &quirk_strict_duplicate_filter_fops);
1243 debugfs_create_file("quirk_simultaneous_discovery", 0644,
1244 hdev->debugfs, hdev,
1245 &quirk_simultaneous_discovery_fops);
1246}
1247
1248void hci_debugfs_create_conn(struct hci_conn *conn)
1249{
1250 struct hci_dev *hdev = conn->hdev;
1251 char name[6];
1252
1253 if (IS_ERR_OR_NULL(hdev->debugfs) || conn->debugfs)
1254 return;
1255
1256 snprintf(name, sizeof(name), "%u", conn->handle);
1257 conn->debugfs = debugfs_create_dir(name, hdev->debugfs);
1258}
1259
1260static ssize_t dut_mode_read(struct file *file, char __user *user_buf,
1261 size_t count, loff_t *ppos)
1262{
1263 struct hci_dev *hdev = file->private_data;
1264 char buf[3];
1265
1266 buf[0] = hci_dev_test_flag(hdev, HCI_DUT_MODE) ? 'Y' : 'N';
1267 buf[1] = '\n';
1268 buf[2] = '\0';
1269 return simple_read_from_buffer(user_buf, count, ppos, buf, 2);
1270}
1271
1272static ssize_t dut_mode_write(struct file *file, const char __user *user_buf,
1273 size_t count, loff_t *ppos)
1274{
1275 struct hci_dev *hdev = file->private_data;
1276 struct sk_buff *skb;
1277 bool enable;
1278 int err;
1279
1280 if (!test_bit(HCI_UP, &hdev->flags))
1281 return -ENETDOWN;
1282
1283 err = kstrtobool_from_user(user_buf, count, &enable);
1284 if (err)
1285 return err;
1286
1287 if (enable == hci_dev_test_flag(hdev, HCI_DUT_MODE))
1288 return -EALREADY;
1289
1290 hci_req_sync_lock(hdev);
1291 if (enable)
1292 skb = __hci_cmd_sync(hdev, HCI_OP_ENABLE_DUT_MODE, 0, NULL,
1293 HCI_CMD_TIMEOUT);
1294 else
1295 skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL,
1296 HCI_CMD_TIMEOUT);
1297 hci_req_sync_unlock(hdev);
1298
1299 if (IS_ERR(skb))
1300 return PTR_ERR(skb);
1301
1302 kfree_skb(skb);
1303
1304 hci_dev_change_flag(hdev, HCI_DUT_MODE);
1305
1306 return count;
1307}
1308
1309static const struct file_operations dut_mode_fops = {
1310 .open = simple_open,
1311 .read = dut_mode_read,
1312 .write = dut_mode_write,
1313 .llseek = default_llseek,
1314};
1315
1316static ssize_t vendor_diag_read(struct file *file, char __user *user_buf,
1317 size_t count, loff_t *ppos)
1318{
1319 struct hci_dev *hdev = file->private_data;
1320 char buf[3];
1321
1322 buf[0] = hci_dev_test_flag(hdev, HCI_VENDOR_DIAG) ? 'Y' : 'N';
1323 buf[1] = '\n';
1324 buf[2] = '\0';
1325 return simple_read_from_buffer(user_buf, count, ppos, buf, 2);
1326}
1327
1328static ssize_t vendor_diag_write(struct file *file, const char __user *user_buf,
1329 size_t count, loff_t *ppos)
1330{
1331 struct hci_dev *hdev = file->private_data;
1332 bool enable;
1333 int err;
1334
1335 err = kstrtobool_from_user(user_buf, count, &enable);
1336 if (err)
1337 return err;
1338
1339 /* When the diagnostic flags are not persistent and the transport
1340 * is not active or in user channel operation, then there is no need
1341 * for the vendor callback. Instead just store the desired value and
1342 * the setting will be programmed when the controller gets powered on.
1343 */
1344 if (test_bit(HCI_QUIRK_NON_PERSISTENT_DIAG, &hdev->quirks) &&
1345 (!test_bit(HCI_RUNNING, &hdev->flags) ||
1346 hci_dev_test_flag(hdev, HCI_USER_CHANNEL)))
1347 goto done;
1348
1349 hci_req_sync_lock(hdev);
1350 err = hdev->set_diag(hdev, enable);
1351 hci_req_sync_unlock(hdev);
1352
1353 if (err < 0)
1354 return err;
1355
1356done:
1357 if (enable)
1358 hci_dev_set_flag(hdev, HCI_VENDOR_DIAG);
1359 else
1360 hci_dev_clear_flag(hdev, HCI_VENDOR_DIAG);
1361
1362 return count;
1363}
1364
1365static const struct file_operations vendor_diag_fops = {
1366 .open = simple_open,
1367 .read = vendor_diag_read,
1368 .write = vendor_diag_write,
1369 .llseek = default_llseek,
1370};
1371
1372void hci_debugfs_create_basic(struct hci_dev *hdev)
1373{
1374 debugfs_create_file("dut_mode", 0644, hdev->debugfs, hdev,
1375 &dut_mode_fops);
1376
1377 if (hdev->set_diag)
1378 debugfs_create_file("vendor_diag", 0644, hdev->debugfs, hdev,
1379 &vendor_diag_fops);
1380}
1/*
2 BlueZ - Bluetooth protocol stack for Linux
3
4 Copyright (C) 2014 Intel Corporation
5
6 This program is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License version 2 as
8 published by the Free Software Foundation;
9
10 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
11 OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
12 FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF THIRD PARTY RIGHTS.
13 IN NO EVENT SHALL THE COPYRIGHT HOLDER(S) AND AUTHOR(S) BE LIABLE FOR ANY
14 CLAIM, OR ANY SPECIAL INDIRECT OR CONSEQUENTIAL DAMAGES, OR ANY DAMAGES
15 WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
16 ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
17 OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
18
19 ALL LIABILITY, INCLUDING LIABILITY FOR INFRINGEMENT OF ANY PATENTS,
20 COPYRIGHTS, TRADEMARKS OR OTHER RIGHTS, RELATING TO USE OF THIS
21 SOFTWARE IS DISCLAIMED.
22*/
23
24#include <linux/debugfs.h>
25
26#include <net/bluetooth/bluetooth.h>
27#include <net/bluetooth/hci_core.h>
28
29#include "hci_debugfs.h"
30
31#define DEFINE_QUIRK_ATTRIBUTE(__name, __quirk) \
32static ssize_t __name ## _read(struct file *file, \
33 char __user *user_buf, \
34 size_t count, loff_t *ppos) \
35{ \
36 struct hci_dev *hdev = file->private_data; \
37 char buf[3]; \
38 \
39 buf[0] = test_bit(__quirk, &hdev->quirks) ? 'Y' : 'N'; \
40 buf[1] = '\n'; \
41 buf[2] = '\0'; \
42 return simple_read_from_buffer(user_buf, count, ppos, buf, 2); \
43} \
44 \
45static ssize_t __name ## _write(struct file *file, \
46 const char __user *user_buf, \
47 size_t count, loff_t *ppos) \
48{ \
49 struct hci_dev *hdev = file->private_data; \
50 char buf[32]; \
51 size_t buf_size = min(count, (sizeof(buf) - 1)); \
52 bool enable; \
53 \
54 if (test_bit(HCI_UP, &hdev->flags)) \
55 return -EBUSY; \
56 \
57 if (copy_from_user(buf, user_buf, buf_size)) \
58 return -EFAULT; \
59 \
60 buf[buf_size] = '\0'; \
61 if (strtobool(buf, &enable)) \
62 return -EINVAL; \
63 \
64 if (enable == test_bit(__quirk, &hdev->quirks)) \
65 return -EALREADY; \
66 \
67 change_bit(__quirk, &hdev->quirks); \
68 \
69 return count; \
70} \
71 \
72static const struct file_operations __name ## _fops = { \
73 .open = simple_open, \
74 .read = __name ## _read, \
75 .write = __name ## _write, \
76 .llseek = default_llseek, \
77} \
78
79#define DEFINE_INFO_ATTRIBUTE(__name, __field) \
80static int __name ## _show(struct seq_file *f, void *ptr) \
81{ \
82 struct hci_dev *hdev = f->private; \
83 \
84 hci_dev_lock(hdev); \
85 seq_printf(f, "%s\n", hdev->__field ? : ""); \
86 hci_dev_unlock(hdev); \
87 \
88 return 0; \
89} \
90 \
91static int __name ## _open(struct inode *inode, struct file *file) \
92{ \
93 return single_open(file, __name ## _show, inode->i_private); \
94} \
95 \
96static const struct file_operations __name ## _fops = { \
97 .open = __name ## _open, \
98 .read = seq_read, \
99 .llseek = seq_lseek, \
100 .release = single_release, \
101} \
102
103static int features_show(struct seq_file *f, void *ptr)
104{
105 struct hci_dev *hdev = f->private;
106 u8 p;
107
108 hci_dev_lock(hdev);
109 for (p = 0; p < HCI_MAX_PAGES && p <= hdev->max_page; p++) {
110 seq_printf(f, "%2u: 0x%2.2x 0x%2.2x 0x%2.2x 0x%2.2x "
111 "0x%2.2x 0x%2.2x 0x%2.2x 0x%2.2x\n", p,
112 hdev->features[p][0], hdev->features[p][1],
113 hdev->features[p][2], hdev->features[p][3],
114 hdev->features[p][4], hdev->features[p][5],
115 hdev->features[p][6], hdev->features[p][7]);
116 }
117 if (lmp_le_capable(hdev))
118 seq_printf(f, "LE: 0x%2.2x 0x%2.2x 0x%2.2x 0x%2.2x "
119 "0x%2.2x 0x%2.2x 0x%2.2x 0x%2.2x\n",
120 hdev->le_features[0], hdev->le_features[1],
121 hdev->le_features[2], hdev->le_features[3],
122 hdev->le_features[4], hdev->le_features[5],
123 hdev->le_features[6], hdev->le_features[7]);
124 hci_dev_unlock(hdev);
125
126 return 0;
127}
128
129static int features_open(struct inode *inode, struct file *file)
130{
131 return single_open(file, features_show, inode->i_private);
132}
133
134static const struct file_operations features_fops = {
135 .open = features_open,
136 .read = seq_read,
137 .llseek = seq_lseek,
138 .release = single_release,
139};
140
141static int device_id_show(struct seq_file *f, void *ptr)
142{
143 struct hci_dev *hdev = f->private;
144
145 hci_dev_lock(hdev);
146 seq_printf(f, "%4.4x:%4.4x:%4.4x:%4.4x\n", hdev->devid_source,
147 hdev->devid_vendor, hdev->devid_product, hdev->devid_version);
148 hci_dev_unlock(hdev);
149
150 return 0;
151}
152
153static int device_id_open(struct inode *inode, struct file *file)
154{
155 return single_open(file, device_id_show, inode->i_private);
156}
157
158static const struct file_operations device_id_fops = {
159 .open = device_id_open,
160 .read = seq_read,
161 .llseek = seq_lseek,
162 .release = single_release,
163};
164
165static int device_list_show(struct seq_file *f, void *ptr)
166{
167 struct hci_dev *hdev = f->private;
168 struct hci_conn_params *p;
169 struct bdaddr_list *b;
170
171 hci_dev_lock(hdev);
172 list_for_each_entry(b, &hdev->whitelist, list)
173 seq_printf(f, "%pMR (type %u)\n", &b->bdaddr, b->bdaddr_type);
174 list_for_each_entry(p, &hdev->le_conn_params, list) {
175 seq_printf(f, "%pMR (type %u) %u\n", &p->addr, p->addr_type,
176 p->auto_connect);
177 }
178 hci_dev_unlock(hdev);
179
180 return 0;
181}
182
183static int device_list_open(struct inode *inode, struct file *file)
184{
185 return single_open(file, device_list_show, inode->i_private);
186}
187
188static const struct file_operations device_list_fops = {
189 .open = device_list_open,
190 .read = seq_read,
191 .llseek = seq_lseek,
192 .release = single_release,
193};
194
195static int blacklist_show(struct seq_file *f, void *p)
196{
197 struct hci_dev *hdev = f->private;
198 struct bdaddr_list *b;
199
200 hci_dev_lock(hdev);
201 list_for_each_entry(b, &hdev->blacklist, list)
202 seq_printf(f, "%pMR (type %u)\n", &b->bdaddr, b->bdaddr_type);
203 hci_dev_unlock(hdev);
204
205 return 0;
206}
207
208static int blacklist_open(struct inode *inode, struct file *file)
209{
210 return single_open(file, blacklist_show, inode->i_private);
211}
212
213static const struct file_operations blacklist_fops = {
214 .open = blacklist_open,
215 .read = seq_read,
216 .llseek = seq_lseek,
217 .release = single_release,
218};
219
220static int uuids_show(struct seq_file *f, void *p)
221{
222 struct hci_dev *hdev = f->private;
223 struct bt_uuid *uuid;
224
225 hci_dev_lock(hdev);
226 list_for_each_entry(uuid, &hdev->uuids, list) {
227 u8 i, val[16];
228
229 /* The Bluetooth UUID values are stored in big endian,
230 * but with reversed byte order. So convert them into
231 * the right order for the %pUb modifier.
232 */
233 for (i = 0; i < 16; i++)
234 val[i] = uuid->uuid[15 - i];
235
236 seq_printf(f, "%pUb\n", val);
237 }
238 hci_dev_unlock(hdev);
239
240 return 0;
241}
242
243static int uuids_open(struct inode *inode, struct file *file)
244{
245 return single_open(file, uuids_show, inode->i_private);
246}
247
248static const struct file_operations uuids_fops = {
249 .open = uuids_open,
250 .read = seq_read,
251 .llseek = seq_lseek,
252 .release = single_release,
253};
254
255static int remote_oob_show(struct seq_file *f, void *ptr)
256{
257 struct hci_dev *hdev = f->private;
258 struct oob_data *data;
259
260 hci_dev_lock(hdev);
261 list_for_each_entry(data, &hdev->remote_oob_data, list) {
262 seq_printf(f, "%pMR (type %u) %u %*phN %*phN %*phN %*phN\n",
263 &data->bdaddr, data->bdaddr_type, data->present,
264 16, data->hash192, 16, data->rand192,
265 16, data->hash256, 16, data->rand256);
266 }
267 hci_dev_unlock(hdev);
268
269 return 0;
270}
271
272static int remote_oob_open(struct inode *inode, struct file *file)
273{
274 return single_open(file, remote_oob_show, inode->i_private);
275}
276
277static const struct file_operations remote_oob_fops = {
278 .open = remote_oob_open,
279 .read = seq_read,
280 .llseek = seq_lseek,
281 .release = single_release,
282};
283
284static int conn_info_min_age_set(void *data, u64 val)
285{
286 struct hci_dev *hdev = data;
287
288 if (val == 0 || val > hdev->conn_info_max_age)
289 return -EINVAL;
290
291 hci_dev_lock(hdev);
292 hdev->conn_info_min_age = val;
293 hci_dev_unlock(hdev);
294
295 return 0;
296}
297
298static int conn_info_min_age_get(void *data, u64 *val)
299{
300 struct hci_dev *hdev = data;
301
302 hci_dev_lock(hdev);
303 *val = hdev->conn_info_min_age;
304 hci_dev_unlock(hdev);
305
306 return 0;
307}
308
309DEFINE_SIMPLE_ATTRIBUTE(conn_info_min_age_fops, conn_info_min_age_get,
310 conn_info_min_age_set, "%llu\n");
311
312static int conn_info_max_age_set(void *data, u64 val)
313{
314 struct hci_dev *hdev = data;
315
316 if (val == 0 || val < hdev->conn_info_min_age)
317 return -EINVAL;
318
319 hci_dev_lock(hdev);
320 hdev->conn_info_max_age = val;
321 hci_dev_unlock(hdev);
322
323 return 0;
324}
325
326static int conn_info_max_age_get(void *data, u64 *val)
327{
328 struct hci_dev *hdev = data;
329
330 hci_dev_lock(hdev);
331 *val = hdev->conn_info_max_age;
332 hci_dev_unlock(hdev);
333
334 return 0;
335}
336
337DEFINE_SIMPLE_ATTRIBUTE(conn_info_max_age_fops, conn_info_max_age_get,
338 conn_info_max_age_set, "%llu\n");
339
340static ssize_t use_debug_keys_read(struct file *file, char __user *user_buf,
341 size_t count, loff_t *ppos)
342{
343 struct hci_dev *hdev = file->private_data;
344 char buf[3];
345
346 buf[0] = hci_dev_test_flag(hdev, HCI_USE_DEBUG_KEYS) ? 'Y': 'N';
347 buf[1] = '\n';
348 buf[2] = '\0';
349 return simple_read_from_buffer(user_buf, count, ppos, buf, 2);
350}
351
352static const struct file_operations use_debug_keys_fops = {
353 .open = simple_open,
354 .read = use_debug_keys_read,
355 .llseek = default_llseek,
356};
357
358static ssize_t sc_only_mode_read(struct file *file, char __user *user_buf,
359 size_t count, loff_t *ppos)
360{
361 struct hci_dev *hdev = file->private_data;
362 char buf[3];
363
364 buf[0] = hci_dev_test_flag(hdev, HCI_SC_ONLY) ? 'Y': 'N';
365 buf[1] = '\n';
366 buf[2] = '\0';
367 return simple_read_from_buffer(user_buf, count, ppos, buf, 2);
368}
369
370static const struct file_operations sc_only_mode_fops = {
371 .open = simple_open,
372 .read = sc_only_mode_read,
373 .llseek = default_llseek,
374};
375
376DEFINE_INFO_ATTRIBUTE(hardware_info, hw_info);
377DEFINE_INFO_ATTRIBUTE(firmware_info, fw_info);
378
379void hci_debugfs_create_common(struct hci_dev *hdev)
380{
381 debugfs_create_file("features", 0444, hdev->debugfs, hdev,
382 &features_fops);
383 debugfs_create_u16("manufacturer", 0444, hdev->debugfs,
384 &hdev->manufacturer);
385 debugfs_create_u8("hci_version", 0444, hdev->debugfs, &hdev->hci_ver);
386 debugfs_create_u16("hci_revision", 0444, hdev->debugfs, &hdev->hci_rev);
387 debugfs_create_u8("hardware_error", 0444, hdev->debugfs,
388 &hdev->hw_error_code);
389 debugfs_create_file("device_id", 0444, hdev->debugfs, hdev,
390 &device_id_fops);
391
392 debugfs_create_file("device_list", 0444, hdev->debugfs, hdev,
393 &device_list_fops);
394 debugfs_create_file("blacklist", 0444, hdev->debugfs, hdev,
395 &blacklist_fops);
396 debugfs_create_file("uuids", 0444, hdev->debugfs, hdev, &uuids_fops);
397 debugfs_create_file("remote_oob", 0400, hdev->debugfs, hdev,
398 &remote_oob_fops);
399
400 debugfs_create_file("conn_info_min_age", 0644, hdev->debugfs, hdev,
401 &conn_info_min_age_fops);
402 debugfs_create_file("conn_info_max_age", 0644, hdev->debugfs, hdev,
403 &conn_info_max_age_fops);
404
405 if (lmp_ssp_capable(hdev) || lmp_le_capable(hdev))
406 debugfs_create_file("use_debug_keys", 0444, hdev->debugfs,
407 hdev, &use_debug_keys_fops);
408
409 if (lmp_sc_capable(hdev) || lmp_le_capable(hdev))
410 debugfs_create_file("sc_only_mode", 0444, hdev->debugfs,
411 hdev, &sc_only_mode_fops);
412
413 if (hdev->hw_info)
414 debugfs_create_file("hardware_info", 0444, hdev->debugfs,
415 hdev, &hardware_info_fops);
416
417 if (hdev->fw_info)
418 debugfs_create_file("firmware_info", 0444, hdev->debugfs,
419 hdev, &firmware_info_fops);
420}
421
422static int inquiry_cache_show(struct seq_file *f, void *p)
423{
424 struct hci_dev *hdev = f->private;
425 struct discovery_state *cache = &hdev->discovery;
426 struct inquiry_entry *e;
427
428 hci_dev_lock(hdev);
429
430 list_for_each_entry(e, &cache->all, all) {
431 struct inquiry_data *data = &e->data;
432 seq_printf(f, "%pMR %d %d %d 0x%.2x%.2x%.2x 0x%.4x %d %d %u\n",
433 &data->bdaddr,
434 data->pscan_rep_mode, data->pscan_period_mode,
435 data->pscan_mode, data->dev_class[2],
436 data->dev_class[1], data->dev_class[0],
437 __le16_to_cpu(data->clock_offset),
438 data->rssi, data->ssp_mode, e->timestamp);
439 }
440
441 hci_dev_unlock(hdev);
442
443 return 0;
444}
445
446static int inquiry_cache_open(struct inode *inode, struct file *file)
447{
448 return single_open(file, inquiry_cache_show, inode->i_private);
449}
450
451static const struct file_operations inquiry_cache_fops = {
452 .open = inquiry_cache_open,
453 .read = seq_read,
454 .llseek = seq_lseek,
455 .release = single_release,
456};
457
458static int link_keys_show(struct seq_file *f, void *ptr)
459{
460 struct hci_dev *hdev = f->private;
461 struct link_key *key;
462
463 rcu_read_lock();
464 list_for_each_entry_rcu(key, &hdev->link_keys, list)
465 seq_printf(f, "%pMR %u %*phN %u\n", &key->bdaddr, key->type,
466 HCI_LINK_KEY_SIZE, key->val, key->pin_len);
467 rcu_read_unlock();
468
469 return 0;
470}
471
472static int link_keys_open(struct inode *inode, struct file *file)
473{
474 return single_open(file, link_keys_show, inode->i_private);
475}
476
477static const struct file_operations link_keys_fops = {
478 .open = link_keys_open,
479 .read = seq_read,
480 .llseek = seq_lseek,
481 .release = single_release,
482};
483
484static int dev_class_show(struct seq_file *f, void *ptr)
485{
486 struct hci_dev *hdev = f->private;
487
488 hci_dev_lock(hdev);
489 seq_printf(f, "0x%.2x%.2x%.2x\n", hdev->dev_class[2],
490 hdev->dev_class[1], hdev->dev_class[0]);
491 hci_dev_unlock(hdev);
492
493 return 0;
494}
495
496static int dev_class_open(struct inode *inode, struct file *file)
497{
498 return single_open(file, dev_class_show, inode->i_private);
499}
500
501static const struct file_operations dev_class_fops = {
502 .open = dev_class_open,
503 .read = seq_read,
504 .llseek = seq_lseek,
505 .release = single_release,
506};
507
508static int voice_setting_get(void *data, u64 *val)
509{
510 struct hci_dev *hdev = data;
511
512 hci_dev_lock(hdev);
513 *val = hdev->voice_setting;
514 hci_dev_unlock(hdev);
515
516 return 0;
517}
518
519DEFINE_SIMPLE_ATTRIBUTE(voice_setting_fops, voice_setting_get,
520 NULL, "0x%4.4llx\n");
521
522static ssize_t ssp_debug_mode_read(struct file *file, char __user *user_buf,
523 size_t count, loff_t *ppos)
524{
525 struct hci_dev *hdev = file->private_data;
526 char buf[3];
527
528 buf[0] = hdev->ssp_debug_mode ? 'Y': 'N';
529 buf[1] = '\n';
530 buf[2] = '\0';
531 return simple_read_from_buffer(user_buf, count, ppos, buf, 2);
532}
533
534static const struct file_operations ssp_debug_mode_fops = {
535 .open = simple_open,
536 .read = ssp_debug_mode_read,
537 .llseek = default_llseek,
538};
539
540static int auto_accept_delay_set(void *data, u64 val)
541{
542 struct hci_dev *hdev = data;
543
544 hci_dev_lock(hdev);
545 hdev->auto_accept_delay = val;
546 hci_dev_unlock(hdev);
547
548 return 0;
549}
550
551static int auto_accept_delay_get(void *data, u64 *val)
552{
553 struct hci_dev *hdev = data;
554
555 hci_dev_lock(hdev);
556 *val = hdev->auto_accept_delay;
557 hci_dev_unlock(hdev);
558
559 return 0;
560}
561
562DEFINE_SIMPLE_ATTRIBUTE(auto_accept_delay_fops, auto_accept_delay_get,
563 auto_accept_delay_set, "%llu\n");
564
565static int idle_timeout_set(void *data, u64 val)
566{
567 struct hci_dev *hdev = data;
568
569 if (val != 0 && (val < 500 || val > 3600000))
570 return -EINVAL;
571
572 hci_dev_lock(hdev);
573 hdev->idle_timeout = val;
574 hci_dev_unlock(hdev);
575
576 return 0;
577}
578
579static int idle_timeout_get(void *data, u64 *val)
580{
581 struct hci_dev *hdev = data;
582
583 hci_dev_lock(hdev);
584 *val = hdev->idle_timeout;
585 hci_dev_unlock(hdev);
586
587 return 0;
588}
589
590DEFINE_SIMPLE_ATTRIBUTE(idle_timeout_fops, idle_timeout_get,
591 idle_timeout_set, "%llu\n");
592
593static int sniff_min_interval_set(void *data, u64 val)
594{
595 struct hci_dev *hdev = data;
596
597 if (val == 0 || val % 2 || val > hdev->sniff_max_interval)
598 return -EINVAL;
599
600 hci_dev_lock(hdev);
601 hdev->sniff_min_interval = val;
602 hci_dev_unlock(hdev);
603
604 return 0;
605}
606
607static int sniff_min_interval_get(void *data, u64 *val)
608{
609 struct hci_dev *hdev = data;
610
611 hci_dev_lock(hdev);
612 *val = hdev->sniff_min_interval;
613 hci_dev_unlock(hdev);
614
615 return 0;
616}
617
618DEFINE_SIMPLE_ATTRIBUTE(sniff_min_interval_fops, sniff_min_interval_get,
619 sniff_min_interval_set, "%llu\n");
620
621static int sniff_max_interval_set(void *data, u64 val)
622{
623 struct hci_dev *hdev = data;
624
625 if (val == 0 || val % 2 || val < hdev->sniff_min_interval)
626 return -EINVAL;
627
628 hci_dev_lock(hdev);
629 hdev->sniff_max_interval = val;
630 hci_dev_unlock(hdev);
631
632 return 0;
633}
634
635static int sniff_max_interval_get(void *data, u64 *val)
636{
637 struct hci_dev *hdev = data;
638
639 hci_dev_lock(hdev);
640 *val = hdev->sniff_max_interval;
641 hci_dev_unlock(hdev);
642
643 return 0;
644}
645
646DEFINE_SIMPLE_ATTRIBUTE(sniff_max_interval_fops, sniff_max_interval_get,
647 sniff_max_interval_set, "%llu\n");
648
649void hci_debugfs_create_bredr(struct hci_dev *hdev)
650{
651 debugfs_create_file("inquiry_cache", 0444, hdev->debugfs, hdev,
652 &inquiry_cache_fops);
653 debugfs_create_file("link_keys", 0400, hdev->debugfs, hdev,
654 &link_keys_fops);
655 debugfs_create_file("dev_class", 0444, hdev->debugfs, hdev,
656 &dev_class_fops);
657 debugfs_create_file("voice_setting", 0444, hdev->debugfs, hdev,
658 &voice_setting_fops);
659
660 if (lmp_ssp_capable(hdev)) {
661 debugfs_create_file("ssp_debug_mode", 0444, hdev->debugfs,
662 hdev, &ssp_debug_mode_fops);
663 debugfs_create_file("auto_accept_delay", 0644, hdev->debugfs,
664 hdev, &auto_accept_delay_fops);
665 }
666
667 if (lmp_sniff_capable(hdev)) {
668 debugfs_create_file("idle_timeout", 0644, hdev->debugfs,
669 hdev, &idle_timeout_fops);
670 debugfs_create_file("sniff_min_interval", 0644, hdev->debugfs,
671 hdev, &sniff_min_interval_fops);
672 debugfs_create_file("sniff_max_interval", 0644, hdev->debugfs,
673 hdev, &sniff_max_interval_fops);
674 }
675}
676
677static int identity_show(struct seq_file *f, void *p)
678{
679 struct hci_dev *hdev = f->private;
680 bdaddr_t addr;
681 u8 addr_type;
682
683 hci_dev_lock(hdev);
684
685 hci_copy_identity_address(hdev, &addr, &addr_type);
686
687 seq_printf(f, "%pMR (type %u) %*phN %pMR\n", &addr, addr_type,
688 16, hdev->irk, &hdev->rpa);
689
690 hci_dev_unlock(hdev);
691
692 return 0;
693}
694
695static int identity_open(struct inode *inode, struct file *file)
696{
697 return single_open(file, identity_show, inode->i_private);
698}
699
700static const struct file_operations identity_fops = {
701 .open = identity_open,
702 .read = seq_read,
703 .llseek = seq_lseek,
704 .release = single_release,
705};
706
707static int rpa_timeout_set(void *data, u64 val)
708{
709 struct hci_dev *hdev = data;
710
711 /* Require the RPA timeout to be at least 30 seconds and at most
712 * 24 hours.
713 */
714 if (val < 30 || val > (60 * 60 * 24))
715 return -EINVAL;
716
717 hci_dev_lock(hdev);
718 hdev->rpa_timeout = val;
719 hci_dev_unlock(hdev);
720
721 return 0;
722}
723
724static int rpa_timeout_get(void *data, u64 *val)
725{
726 struct hci_dev *hdev = data;
727
728 hci_dev_lock(hdev);
729 *val = hdev->rpa_timeout;
730 hci_dev_unlock(hdev);
731
732 return 0;
733}
734
735DEFINE_SIMPLE_ATTRIBUTE(rpa_timeout_fops, rpa_timeout_get,
736 rpa_timeout_set, "%llu\n");
737
738static int random_address_show(struct seq_file *f, void *p)
739{
740 struct hci_dev *hdev = f->private;
741
742 hci_dev_lock(hdev);
743 seq_printf(f, "%pMR\n", &hdev->random_addr);
744 hci_dev_unlock(hdev);
745
746 return 0;
747}
748
749static int random_address_open(struct inode *inode, struct file *file)
750{
751 return single_open(file, random_address_show, inode->i_private);
752}
753
754static const struct file_operations random_address_fops = {
755 .open = random_address_open,
756 .read = seq_read,
757 .llseek = seq_lseek,
758 .release = single_release,
759};
760
761static int static_address_show(struct seq_file *f, void *p)
762{
763 struct hci_dev *hdev = f->private;
764
765 hci_dev_lock(hdev);
766 seq_printf(f, "%pMR\n", &hdev->static_addr);
767 hci_dev_unlock(hdev);
768
769 return 0;
770}
771
772static int static_address_open(struct inode *inode, struct file *file)
773{
774 return single_open(file, static_address_show, inode->i_private);
775}
776
777static const struct file_operations static_address_fops = {
778 .open = static_address_open,
779 .read = seq_read,
780 .llseek = seq_lseek,
781 .release = single_release,
782};
783
784static ssize_t force_static_address_read(struct file *file,
785 char __user *user_buf,
786 size_t count, loff_t *ppos)
787{
788 struct hci_dev *hdev = file->private_data;
789 char buf[3];
790
791 buf[0] = hci_dev_test_flag(hdev, HCI_FORCE_STATIC_ADDR) ? 'Y': 'N';
792 buf[1] = '\n';
793 buf[2] = '\0';
794 return simple_read_from_buffer(user_buf, count, ppos, buf, 2);
795}
796
797static ssize_t force_static_address_write(struct file *file,
798 const char __user *user_buf,
799 size_t count, loff_t *ppos)
800{
801 struct hci_dev *hdev = file->private_data;
802 char buf[32];
803 size_t buf_size = min(count, (sizeof(buf)-1));
804 bool enable;
805
806 if (test_bit(HCI_UP, &hdev->flags))
807 return -EBUSY;
808
809 if (copy_from_user(buf, user_buf, buf_size))
810 return -EFAULT;
811
812 buf[buf_size] = '\0';
813 if (strtobool(buf, &enable))
814 return -EINVAL;
815
816 if (enable == hci_dev_test_flag(hdev, HCI_FORCE_STATIC_ADDR))
817 return -EALREADY;
818
819 hci_dev_change_flag(hdev, HCI_FORCE_STATIC_ADDR);
820
821 return count;
822}
823
824static const struct file_operations force_static_address_fops = {
825 .open = simple_open,
826 .read = force_static_address_read,
827 .write = force_static_address_write,
828 .llseek = default_llseek,
829};
830
831static int white_list_show(struct seq_file *f, void *ptr)
832{
833 struct hci_dev *hdev = f->private;
834 struct bdaddr_list *b;
835
836 hci_dev_lock(hdev);
837 list_for_each_entry(b, &hdev->le_white_list, list)
838 seq_printf(f, "%pMR (type %u)\n", &b->bdaddr, b->bdaddr_type);
839 hci_dev_unlock(hdev);
840
841 return 0;
842}
843
844static int white_list_open(struct inode *inode, struct file *file)
845{
846 return single_open(file, white_list_show, inode->i_private);
847}
848
849static const struct file_operations white_list_fops = {
850 .open = white_list_open,
851 .read = seq_read,
852 .llseek = seq_lseek,
853 .release = single_release,
854};
855
856static int identity_resolving_keys_show(struct seq_file *f, void *ptr)
857{
858 struct hci_dev *hdev = f->private;
859 struct smp_irk *irk;
860
861 rcu_read_lock();
862 list_for_each_entry_rcu(irk, &hdev->identity_resolving_keys, list) {
863 seq_printf(f, "%pMR (type %u) %*phN %pMR\n",
864 &irk->bdaddr, irk->addr_type,
865 16, irk->val, &irk->rpa);
866 }
867 rcu_read_unlock();
868
869 return 0;
870}
871
872static int identity_resolving_keys_open(struct inode *inode, struct file *file)
873{
874 return single_open(file, identity_resolving_keys_show,
875 inode->i_private);
876}
877
878static const struct file_operations identity_resolving_keys_fops = {
879 .open = identity_resolving_keys_open,
880 .read = seq_read,
881 .llseek = seq_lseek,
882 .release = single_release,
883};
884
885static int long_term_keys_show(struct seq_file *f, void *ptr)
886{
887 struct hci_dev *hdev = f->private;
888 struct smp_ltk *ltk;
889
890 rcu_read_lock();
891 list_for_each_entry_rcu(ltk, &hdev->long_term_keys, list)
892 seq_printf(f, "%pMR (type %u) %u 0x%02x %u %.4x %.16llx %*phN\n",
893 <k->bdaddr, ltk->bdaddr_type, ltk->authenticated,
894 ltk->type, ltk->enc_size, __le16_to_cpu(ltk->ediv),
895 __le64_to_cpu(ltk->rand), 16, ltk->val);
896 rcu_read_unlock();
897
898 return 0;
899}
900
901static int long_term_keys_open(struct inode *inode, struct file *file)
902{
903 return single_open(file, long_term_keys_show, inode->i_private);
904}
905
906static const struct file_operations long_term_keys_fops = {
907 .open = long_term_keys_open,
908 .read = seq_read,
909 .llseek = seq_lseek,
910 .release = single_release,
911};
912
913static int conn_min_interval_set(void *data, u64 val)
914{
915 struct hci_dev *hdev = data;
916
917 if (val < 0x0006 || val > 0x0c80 || val > hdev->le_conn_max_interval)
918 return -EINVAL;
919
920 hci_dev_lock(hdev);
921 hdev->le_conn_min_interval = val;
922 hci_dev_unlock(hdev);
923
924 return 0;
925}
926
927static int conn_min_interval_get(void *data, u64 *val)
928{
929 struct hci_dev *hdev = data;
930
931 hci_dev_lock(hdev);
932 *val = hdev->le_conn_min_interval;
933 hci_dev_unlock(hdev);
934
935 return 0;
936}
937
938DEFINE_SIMPLE_ATTRIBUTE(conn_min_interval_fops, conn_min_interval_get,
939 conn_min_interval_set, "%llu\n");
940
941static int conn_max_interval_set(void *data, u64 val)
942{
943 struct hci_dev *hdev = data;
944
945 if (val < 0x0006 || val > 0x0c80 || val < hdev->le_conn_min_interval)
946 return -EINVAL;
947
948 hci_dev_lock(hdev);
949 hdev->le_conn_max_interval = val;
950 hci_dev_unlock(hdev);
951
952 return 0;
953}
954
955static int conn_max_interval_get(void *data, u64 *val)
956{
957 struct hci_dev *hdev = data;
958
959 hci_dev_lock(hdev);
960 *val = hdev->le_conn_max_interval;
961 hci_dev_unlock(hdev);
962
963 return 0;
964}
965
966DEFINE_SIMPLE_ATTRIBUTE(conn_max_interval_fops, conn_max_interval_get,
967 conn_max_interval_set, "%llu\n");
968
969static int conn_latency_set(void *data, u64 val)
970{
971 struct hci_dev *hdev = data;
972
973 if (val > 0x01f3)
974 return -EINVAL;
975
976 hci_dev_lock(hdev);
977 hdev->le_conn_latency = val;
978 hci_dev_unlock(hdev);
979
980 return 0;
981}
982
983static int conn_latency_get(void *data, u64 *val)
984{
985 struct hci_dev *hdev = data;
986
987 hci_dev_lock(hdev);
988 *val = hdev->le_conn_latency;
989 hci_dev_unlock(hdev);
990
991 return 0;
992}
993
994DEFINE_SIMPLE_ATTRIBUTE(conn_latency_fops, conn_latency_get,
995 conn_latency_set, "%llu\n");
996
997static int supervision_timeout_set(void *data, u64 val)
998{
999 struct hci_dev *hdev = data;
1000
1001 if (val < 0x000a || val > 0x0c80)
1002 return -EINVAL;
1003
1004 hci_dev_lock(hdev);
1005 hdev->le_supv_timeout = val;
1006 hci_dev_unlock(hdev);
1007
1008 return 0;
1009}
1010
1011static int supervision_timeout_get(void *data, u64 *val)
1012{
1013 struct hci_dev *hdev = data;
1014
1015 hci_dev_lock(hdev);
1016 *val = hdev->le_supv_timeout;
1017 hci_dev_unlock(hdev);
1018
1019 return 0;
1020}
1021
1022DEFINE_SIMPLE_ATTRIBUTE(supervision_timeout_fops, supervision_timeout_get,
1023 supervision_timeout_set, "%llu\n");
1024
1025static int adv_channel_map_set(void *data, u64 val)
1026{
1027 struct hci_dev *hdev = data;
1028
1029 if (val < 0x01 || val > 0x07)
1030 return -EINVAL;
1031
1032 hci_dev_lock(hdev);
1033 hdev->le_adv_channel_map = val;
1034 hci_dev_unlock(hdev);
1035
1036 return 0;
1037}
1038
1039static int adv_channel_map_get(void *data, u64 *val)
1040{
1041 struct hci_dev *hdev = data;
1042
1043 hci_dev_lock(hdev);
1044 *val = hdev->le_adv_channel_map;
1045 hci_dev_unlock(hdev);
1046
1047 return 0;
1048}
1049
1050DEFINE_SIMPLE_ATTRIBUTE(adv_channel_map_fops, adv_channel_map_get,
1051 adv_channel_map_set, "%llu\n");
1052
1053static int adv_min_interval_set(void *data, u64 val)
1054{
1055 struct hci_dev *hdev = data;
1056
1057 if (val < 0x0020 || val > 0x4000 || val > hdev->le_adv_max_interval)
1058 return -EINVAL;
1059
1060 hci_dev_lock(hdev);
1061 hdev->le_adv_min_interval = val;
1062 hci_dev_unlock(hdev);
1063
1064 return 0;
1065}
1066
1067static int adv_min_interval_get(void *data, u64 *val)
1068{
1069 struct hci_dev *hdev = data;
1070
1071 hci_dev_lock(hdev);
1072 *val = hdev->le_adv_min_interval;
1073 hci_dev_unlock(hdev);
1074
1075 return 0;
1076}
1077
1078DEFINE_SIMPLE_ATTRIBUTE(adv_min_interval_fops, adv_min_interval_get,
1079 adv_min_interval_set, "%llu\n");
1080
1081static int adv_max_interval_set(void *data, u64 val)
1082{
1083 struct hci_dev *hdev = data;
1084
1085 if (val < 0x0020 || val > 0x4000 || val < hdev->le_adv_min_interval)
1086 return -EINVAL;
1087
1088 hci_dev_lock(hdev);
1089 hdev->le_adv_max_interval = val;
1090 hci_dev_unlock(hdev);
1091
1092 return 0;
1093}
1094
1095static int adv_max_interval_get(void *data, u64 *val)
1096{
1097 struct hci_dev *hdev = data;
1098
1099 hci_dev_lock(hdev);
1100 *val = hdev->le_adv_max_interval;
1101 hci_dev_unlock(hdev);
1102
1103 return 0;
1104}
1105
1106DEFINE_SIMPLE_ATTRIBUTE(adv_max_interval_fops, adv_max_interval_get,
1107 adv_max_interval_set, "%llu\n");
1108
1109DEFINE_QUIRK_ATTRIBUTE(quirk_strict_duplicate_filter,
1110 HCI_QUIRK_STRICT_DUPLICATE_FILTER);
1111DEFINE_QUIRK_ATTRIBUTE(quirk_simultaneous_discovery,
1112 HCI_QUIRK_SIMULTANEOUS_DISCOVERY);
1113
1114void hci_debugfs_create_le(struct hci_dev *hdev)
1115{
1116 debugfs_create_file("identity", 0400, hdev->debugfs, hdev,
1117 &identity_fops);
1118 debugfs_create_file("rpa_timeout", 0644, hdev->debugfs, hdev,
1119 &rpa_timeout_fops);
1120 debugfs_create_file("random_address", 0444, hdev->debugfs, hdev,
1121 &random_address_fops);
1122 debugfs_create_file("static_address", 0444, hdev->debugfs, hdev,
1123 &static_address_fops);
1124
1125 /* For controllers with a public address, provide a debug
1126 * option to force the usage of the configured static
1127 * address. By default the public address is used.
1128 */
1129 if (bacmp(&hdev->bdaddr, BDADDR_ANY))
1130 debugfs_create_file("force_static_address", 0644,
1131 hdev->debugfs, hdev,
1132 &force_static_address_fops);
1133
1134 debugfs_create_u8("white_list_size", 0444, hdev->debugfs,
1135 &hdev->le_white_list_size);
1136 debugfs_create_file("white_list", 0444, hdev->debugfs, hdev,
1137 &white_list_fops);
1138 debugfs_create_file("identity_resolving_keys", 0400, hdev->debugfs,
1139 hdev, &identity_resolving_keys_fops);
1140 debugfs_create_file("long_term_keys", 0400, hdev->debugfs, hdev,
1141 &long_term_keys_fops);
1142 debugfs_create_file("conn_min_interval", 0644, hdev->debugfs, hdev,
1143 &conn_min_interval_fops);
1144 debugfs_create_file("conn_max_interval", 0644, hdev->debugfs, hdev,
1145 &conn_max_interval_fops);
1146 debugfs_create_file("conn_latency", 0644, hdev->debugfs, hdev,
1147 &conn_latency_fops);
1148 debugfs_create_file("supervision_timeout", 0644, hdev->debugfs, hdev,
1149 &supervision_timeout_fops);
1150 debugfs_create_file("adv_channel_map", 0644, hdev->debugfs, hdev,
1151 &adv_channel_map_fops);
1152 debugfs_create_file("adv_min_interval", 0644, hdev->debugfs, hdev,
1153 &adv_min_interval_fops);
1154 debugfs_create_file("adv_max_interval", 0644, hdev->debugfs, hdev,
1155 &adv_max_interval_fops);
1156 debugfs_create_u16("discov_interleaved_timeout", 0644, hdev->debugfs,
1157 &hdev->discov_interleaved_timeout);
1158
1159 debugfs_create_file("quirk_strict_duplicate_filter", 0644,
1160 hdev->debugfs, hdev,
1161 &quirk_strict_duplicate_filter_fops);
1162 debugfs_create_file("quirk_simultaneous_discovery", 0644,
1163 hdev->debugfs, hdev,
1164 &quirk_simultaneous_discovery_fops);
1165}
1166
1167void hci_debugfs_create_conn(struct hci_conn *conn)
1168{
1169 struct hci_dev *hdev = conn->hdev;
1170 char name[6];
1171
1172 if (IS_ERR_OR_NULL(hdev->debugfs))
1173 return;
1174
1175 snprintf(name, sizeof(name), "%u", conn->handle);
1176 conn->debugfs = debugfs_create_dir(name, hdev->debugfs);
1177}