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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
79static int features_show(struct seq_file *f, void *ptr)
80{
81 struct hci_dev *hdev = f->private;
82 u8 p;
83
84 hci_dev_lock(hdev);
85 for (p = 0; p < HCI_MAX_PAGES && p <= hdev->max_page; p++) {
86 seq_printf(f, "%2u: 0x%2.2x 0x%2.2x 0x%2.2x 0x%2.2x "
87 "0x%2.2x 0x%2.2x 0x%2.2x 0x%2.2x\n", p,
88 hdev->features[p][0], hdev->features[p][1],
89 hdev->features[p][2], hdev->features[p][3],
90 hdev->features[p][4], hdev->features[p][5],
91 hdev->features[p][6], hdev->features[p][7]);
92 }
93 if (lmp_le_capable(hdev))
94 seq_printf(f, "LE: 0x%2.2x 0x%2.2x 0x%2.2x 0x%2.2x "
95 "0x%2.2x 0x%2.2x 0x%2.2x 0x%2.2x\n",
96 hdev->le_features[0], hdev->le_features[1],
97 hdev->le_features[2], hdev->le_features[3],
98 hdev->le_features[4], hdev->le_features[5],
99 hdev->le_features[6], hdev->le_features[7]);
100 hci_dev_unlock(hdev);
101
102 return 0;
103}
104
105static int features_open(struct inode *inode, struct file *file)
106{
107 return single_open(file, features_show, inode->i_private);
108}
109
110static const struct file_operations features_fops = {
111 .open = features_open,
112 .read = seq_read,
113 .llseek = seq_lseek,
114 .release = single_release,
115};
116
117static int device_id_show(struct seq_file *f, void *ptr)
118{
119 struct hci_dev *hdev = f->private;
120
121 hci_dev_lock(hdev);
122 seq_printf(f, "%4.4x:%4.4x:%4.4x:%4.4x\n", hdev->devid_source,
123 hdev->devid_vendor, hdev->devid_product, hdev->devid_version);
124 hci_dev_unlock(hdev);
125
126 return 0;
127}
128
129static int device_id_open(struct inode *inode, struct file *file)
130{
131 return single_open(file, device_id_show, inode->i_private);
132}
133
134static const struct file_operations device_id_fops = {
135 .open = device_id_open,
136 .read = seq_read,
137 .llseek = seq_lseek,
138 .release = single_release,
139};
140
141static int device_list_show(struct seq_file *f, void *ptr)
142{
143 struct hci_dev *hdev = f->private;
144 struct hci_conn_params *p;
145 struct bdaddr_list *b;
146
147 hci_dev_lock(hdev);
148 list_for_each_entry(b, &hdev->whitelist, list)
149 seq_printf(f, "%pMR (type %u)\n", &b->bdaddr, b->bdaddr_type);
150 list_for_each_entry(p, &hdev->le_conn_params, list) {
151 seq_printf(f, "%pMR (type %u) %u\n", &p->addr, p->addr_type,
152 p->auto_connect);
153 }
154 hci_dev_unlock(hdev);
155
156 return 0;
157}
158
159static int device_list_open(struct inode *inode, struct file *file)
160{
161 return single_open(file, device_list_show, inode->i_private);
162}
163
164static const struct file_operations device_list_fops = {
165 .open = device_list_open,
166 .read = seq_read,
167 .llseek = seq_lseek,
168 .release = single_release,
169};
170
171static int blacklist_show(struct seq_file *f, void *p)
172{
173 struct hci_dev *hdev = f->private;
174 struct bdaddr_list *b;
175
176 hci_dev_lock(hdev);
177 list_for_each_entry(b, &hdev->blacklist, list)
178 seq_printf(f, "%pMR (type %u)\n", &b->bdaddr, b->bdaddr_type);
179 hci_dev_unlock(hdev);
180
181 return 0;
182}
183
184static int blacklist_open(struct inode *inode, struct file *file)
185{
186 return single_open(file, blacklist_show, inode->i_private);
187}
188
189static const struct file_operations blacklist_fops = {
190 .open = blacklist_open,
191 .read = seq_read,
192 .llseek = seq_lseek,
193 .release = single_release,
194};
195
196static int uuids_show(struct seq_file *f, void *p)
197{
198 struct hci_dev *hdev = f->private;
199 struct bt_uuid *uuid;
200
201 hci_dev_lock(hdev);
202 list_for_each_entry(uuid, &hdev->uuids, list) {
203 u8 i, val[16];
204
205 /* The Bluetooth UUID values are stored in big endian,
206 * but with reversed byte order. So convert them into
207 * the right order for the %pUb modifier.
208 */
209 for (i = 0; i < 16; i++)
210 val[i] = uuid->uuid[15 - i];
211
212 seq_printf(f, "%pUb\n", val);
213 }
214 hci_dev_unlock(hdev);
215
216 return 0;
217}
218
219static int uuids_open(struct inode *inode, struct file *file)
220{
221 return single_open(file, uuids_show, inode->i_private);
222}
223
224static const struct file_operations uuids_fops = {
225 .open = uuids_open,
226 .read = seq_read,
227 .llseek = seq_lseek,
228 .release = single_release,
229};
230
231static int remote_oob_show(struct seq_file *f, void *ptr)
232{
233 struct hci_dev *hdev = f->private;
234 struct oob_data *data;
235
236 hci_dev_lock(hdev);
237 list_for_each_entry(data, &hdev->remote_oob_data, list) {
238 seq_printf(f, "%pMR (type %u) %u %*phN %*phN %*phN %*phN\n",
239 &data->bdaddr, data->bdaddr_type, data->present,
240 16, data->hash192, 16, data->rand192,
241 16, data->hash256, 16, data->rand256);
242 }
243 hci_dev_unlock(hdev);
244
245 return 0;
246}
247
248static int remote_oob_open(struct inode *inode, struct file *file)
249{
250 return single_open(file, remote_oob_show, inode->i_private);
251}
252
253static const struct file_operations remote_oob_fops = {
254 .open = remote_oob_open,
255 .read = seq_read,
256 .llseek = seq_lseek,
257 .release = single_release,
258};
259
260static int conn_info_min_age_set(void *data, u64 val)
261{
262 struct hci_dev *hdev = data;
263
264 if (val == 0 || val > hdev->conn_info_max_age)
265 return -EINVAL;
266
267 hci_dev_lock(hdev);
268 hdev->conn_info_min_age = val;
269 hci_dev_unlock(hdev);
270
271 return 0;
272}
273
274static int conn_info_min_age_get(void *data, u64 *val)
275{
276 struct hci_dev *hdev = data;
277
278 hci_dev_lock(hdev);
279 *val = hdev->conn_info_min_age;
280 hci_dev_unlock(hdev);
281
282 return 0;
283}
284
285DEFINE_SIMPLE_ATTRIBUTE(conn_info_min_age_fops, conn_info_min_age_get,
286 conn_info_min_age_set, "%llu\n");
287
288static int conn_info_max_age_set(void *data, u64 val)
289{
290 struct hci_dev *hdev = data;
291
292 if (val == 0 || val < hdev->conn_info_min_age)
293 return -EINVAL;
294
295 hci_dev_lock(hdev);
296 hdev->conn_info_max_age = val;
297 hci_dev_unlock(hdev);
298
299 return 0;
300}
301
302static int conn_info_max_age_get(void *data, u64 *val)
303{
304 struct hci_dev *hdev = data;
305
306 hci_dev_lock(hdev);
307 *val = hdev->conn_info_max_age;
308 hci_dev_unlock(hdev);
309
310 return 0;
311}
312
313DEFINE_SIMPLE_ATTRIBUTE(conn_info_max_age_fops, conn_info_max_age_get,
314 conn_info_max_age_set, "%llu\n");
315
316static ssize_t use_debug_keys_read(struct file *file, char __user *user_buf,
317 size_t count, loff_t *ppos)
318{
319 struct hci_dev *hdev = file->private_data;
320 char buf[3];
321
322 buf[0] = hci_dev_test_flag(hdev, HCI_USE_DEBUG_KEYS) ? 'Y': 'N';
323 buf[1] = '\n';
324 buf[2] = '\0';
325 return simple_read_from_buffer(user_buf, count, ppos, buf, 2);
326}
327
328static const struct file_operations use_debug_keys_fops = {
329 .open = simple_open,
330 .read = use_debug_keys_read,
331 .llseek = default_llseek,
332};
333
334static ssize_t sc_only_mode_read(struct file *file, char __user *user_buf,
335 size_t count, loff_t *ppos)
336{
337 struct hci_dev *hdev = file->private_data;
338 char buf[3];
339
340 buf[0] = hci_dev_test_flag(hdev, HCI_SC_ONLY) ? 'Y': 'N';
341 buf[1] = '\n';
342 buf[2] = '\0';
343 return simple_read_from_buffer(user_buf, count, ppos, buf, 2);
344}
345
346static const struct file_operations sc_only_mode_fops = {
347 .open = simple_open,
348 .read = sc_only_mode_read,
349 .llseek = default_llseek,
350};
351
352void hci_debugfs_create_common(struct hci_dev *hdev)
353{
354 debugfs_create_file("features", 0444, hdev->debugfs, hdev,
355 &features_fops);
356 debugfs_create_u16("manufacturer", 0444, hdev->debugfs,
357 &hdev->manufacturer);
358 debugfs_create_u8("hci_version", 0444, hdev->debugfs, &hdev->hci_ver);
359 debugfs_create_u16("hci_revision", 0444, hdev->debugfs, &hdev->hci_rev);
360 debugfs_create_u8("hardware_error", 0444, hdev->debugfs,
361 &hdev->hw_error_code);
362 debugfs_create_file("device_id", 0444, hdev->debugfs, hdev,
363 &device_id_fops);
364
365 debugfs_create_file("device_list", 0444, hdev->debugfs, hdev,
366 &device_list_fops);
367 debugfs_create_file("blacklist", 0444, hdev->debugfs, hdev,
368 &blacklist_fops);
369 debugfs_create_file("uuids", 0444, hdev->debugfs, hdev, &uuids_fops);
370 debugfs_create_file("remote_oob", 0400, hdev->debugfs, hdev,
371 &remote_oob_fops);
372
373 debugfs_create_file("conn_info_min_age", 0644, hdev->debugfs, hdev,
374 &conn_info_min_age_fops);
375 debugfs_create_file("conn_info_max_age", 0644, hdev->debugfs, hdev,
376 &conn_info_max_age_fops);
377
378 if (lmp_ssp_capable(hdev) || lmp_le_capable(hdev))
379 debugfs_create_file("use_debug_keys", 0444, hdev->debugfs,
380 hdev, &use_debug_keys_fops);
381
382 if (lmp_sc_capable(hdev) || lmp_le_capable(hdev))
383 debugfs_create_file("sc_only_mode", 0444, hdev->debugfs,
384 hdev, &sc_only_mode_fops);
385}
386
387static int inquiry_cache_show(struct seq_file *f, void *p)
388{
389 struct hci_dev *hdev = f->private;
390 struct discovery_state *cache = &hdev->discovery;
391 struct inquiry_entry *e;
392
393 hci_dev_lock(hdev);
394
395 list_for_each_entry(e, &cache->all, all) {
396 struct inquiry_data *data = &e->data;
397 seq_printf(f, "%pMR %d %d %d 0x%.2x%.2x%.2x 0x%.4x %d %d %u\n",
398 &data->bdaddr,
399 data->pscan_rep_mode, data->pscan_period_mode,
400 data->pscan_mode, data->dev_class[2],
401 data->dev_class[1], data->dev_class[0],
402 __le16_to_cpu(data->clock_offset),
403 data->rssi, data->ssp_mode, e->timestamp);
404 }
405
406 hci_dev_unlock(hdev);
407
408 return 0;
409}
410
411static int inquiry_cache_open(struct inode *inode, struct file *file)
412{
413 return single_open(file, inquiry_cache_show, inode->i_private);
414}
415
416static const struct file_operations inquiry_cache_fops = {
417 .open = inquiry_cache_open,
418 .read = seq_read,
419 .llseek = seq_lseek,
420 .release = single_release,
421};
422
423static int link_keys_show(struct seq_file *f, void *ptr)
424{
425 struct hci_dev *hdev = f->private;
426 struct link_key *key;
427
428 rcu_read_lock();
429 list_for_each_entry_rcu(key, &hdev->link_keys, list)
430 seq_printf(f, "%pMR %u %*phN %u\n", &key->bdaddr, key->type,
431 HCI_LINK_KEY_SIZE, key->val, key->pin_len);
432 rcu_read_unlock();
433
434 return 0;
435}
436
437static int link_keys_open(struct inode *inode, struct file *file)
438{
439 return single_open(file, link_keys_show, inode->i_private);
440}
441
442static const struct file_operations link_keys_fops = {
443 .open = link_keys_open,
444 .read = seq_read,
445 .llseek = seq_lseek,
446 .release = single_release,
447};
448
449static int dev_class_show(struct seq_file *f, void *ptr)
450{
451 struct hci_dev *hdev = f->private;
452
453 hci_dev_lock(hdev);
454 seq_printf(f, "0x%.2x%.2x%.2x\n", hdev->dev_class[2],
455 hdev->dev_class[1], hdev->dev_class[0]);
456 hci_dev_unlock(hdev);
457
458 return 0;
459}
460
461static int dev_class_open(struct inode *inode, struct file *file)
462{
463 return single_open(file, dev_class_show, inode->i_private);
464}
465
466static const struct file_operations dev_class_fops = {
467 .open = dev_class_open,
468 .read = seq_read,
469 .llseek = seq_lseek,
470 .release = single_release,
471};
472
473static int voice_setting_get(void *data, u64 *val)
474{
475 struct hci_dev *hdev = data;
476
477 hci_dev_lock(hdev);
478 *val = hdev->voice_setting;
479 hci_dev_unlock(hdev);
480
481 return 0;
482}
483
484DEFINE_SIMPLE_ATTRIBUTE(voice_setting_fops, voice_setting_get,
485 NULL, "0x%4.4llx\n");
486
487static ssize_t ssp_debug_mode_read(struct file *file, char __user *user_buf,
488 size_t count, loff_t *ppos)
489{
490 struct hci_dev *hdev = file->private_data;
491 char buf[3];
492
493 buf[0] = hdev->ssp_debug_mode ? 'Y': 'N';
494 buf[1] = '\n';
495 buf[2] = '\0';
496 return simple_read_from_buffer(user_buf, count, ppos, buf, 2);
497}
498
499static const struct file_operations ssp_debug_mode_fops = {
500 .open = simple_open,
501 .read = ssp_debug_mode_read,
502 .llseek = default_llseek,
503};
504
505static int auto_accept_delay_set(void *data, u64 val)
506{
507 struct hci_dev *hdev = data;
508
509 hci_dev_lock(hdev);
510 hdev->auto_accept_delay = val;
511 hci_dev_unlock(hdev);
512
513 return 0;
514}
515
516static int auto_accept_delay_get(void *data, u64 *val)
517{
518 struct hci_dev *hdev = data;
519
520 hci_dev_lock(hdev);
521 *val = hdev->auto_accept_delay;
522 hci_dev_unlock(hdev);
523
524 return 0;
525}
526
527DEFINE_SIMPLE_ATTRIBUTE(auto_accept_delay_fops, auto_accept_delay_get,
528 auto_accept_delay_set, "%llu\n");
529
530static int idle_timeout_set(void *data, u64 val)
531{
532 struct hci_dev *hdev = data;
533
534 if (val != 0 && (val < 500 || val > 3600000))
535 return -EINVAL;
536
537 hci_dev_lock(hdev);
538 hdev->idle_timeout = val;
539 hci_dev_unlock(hdev);
540
541 return 0;
542}
543
544static int idle_timeout_get(void *data, u64 *val)
545{
546 struct hci_dev *hdev = data;
547
548 hci_dev_lock(hdev);
549 *val = hdev->idle_timeout;
550 hci_dev_unlock(hdev);
551
552 return 0;
553}
554
555DEFINE_SIMPLE_ATTRIBUTE(idle_timeout_fops, idle_timeout_get,
556 idle_timeout_set, "%llu\n");
557
558static int sniff_min_interval_set(void *data, u64 val)
559{
560 struct hci_dev *hdev = data;
561
562 if (val == 0 || val % 2 || val > hdev->sniff_max_interval)
563 return -EINVAL;
564
565 hci_dev_lock(hdev);
566 hdev->sniff_min_interval = val;
567 hci_dev_unlock(hdev);
568
569 return 0;
570}
571
572static int sniff_min_interval_get(void *data, u64 *val)
573{
574 struct hci_dev *hdev = data;
575
576 hci_dev_lock(hdev);
577 *val = hdev->sniff_min_interval;
578 hci_dev_unlock(hdev);
579
580 return 0;
581}
582
583DEFINE_SIMPLE_ATTRIBUTE(sniff_min_interval_fops, sniff_min_interval_get,
584 sniff_min_interval_set, "%llu\n");
585
586static int sniff_max_interval_set(void *data, u64 val)
587{
588 struct hci_dev *hdev = data;
589
590 if (val == 0 || val % 2 || val < hdev->sniff_min_interval)
591 return -EINVAL;
592
593 hci_dev_lock(hdev);
594 hdev->sniff_max_interval = val;
595 hci_dev_unlock(hdev);
596
597 return 0;
598}
599
600static int sniff_max_interval_get(void *data, u64 *val)
601{
602 struct hci_dev *hdev = data;
603
604 hci_dev_lock(hdev);
605 *val = hdev->sniff_max_interval;
606 hci_dev_unlock(hdev);
607
608 return 0;
609}
610
611DEFINE_SIMPLE_ATTRIBUTE(sniff_max_interval_fops, sniff_max_interval_get,
612 sniff_max_interval_set, "%llu\n");
613
614void hci_debugfs_create_bredr(struct hci_dev *hdev)
615{
616 debugfs_create_file("inquiry_cache", 0444, hdev->debugfs, hdev,
617 &inquiry_cache_fops);
618 debugfs_create_file("link_keys", 0400, hdev->debugfs, hdev,
619 &link_keys_fops);
620 debugfs_create_file("dev_class", 0444, hdev->debugfs, hdev,
621 &dev_class_fops);
622 debugfs_create_file("voice_setting", 0444, hdev->debugfs, hdev,
623 &voice_setting_fops);
624
625 if (lmp_ssp_capable(hdev)) {
626 debugfs_create_file("ssp_debug_mode", 0444, hdev->debugfs,
627 hdev, &ssp_debug_mode_fops);
628 debugfs_create_file("auto_accept_delay", 0644, hdev->debugfs,
629 hdev, &auto_accept_delay_fops);
630 }
631
632 if (lmp_sniff_capable(hdev)) {
633 debugfs_create_file("idle_timeout", 0644, hdev->debugfs,
634 hdev, &idle_timeout_fops);
635 debugfs_create_file("sniff_min_interval", 0644, hdev->debugfs,
636 hdev, &sniff_min_interval_fops);
637 debugfs_create_file("sniff_max_interval", 0644, hdev->debugfs,
638 hdev, &sniff_max_interval_fops);
639 }
640}
641
642static int identity_show(struct seq_file *f, void *p)
643{
644 struct hci_dev *hdev = f->private;
645 bdaddr_t addr;
646 u8 addr_type;
647
648 hci_dev_lock(hdev);
649
650 hci_copy_identity_address(hdev, &addr, &addr_type);
651
652 seq_printf(f, "%pMR (type %u) %*phN %pMR\n", &addr, addr_type,
653 16, hdev->irk, &hdev->rpa);
654
655 hci_dev_unlock(hdev);
656
657 return 0;
658}
659
660static int identity_open(struct inode *inode, struct file *file)
661{
662 return single_open(file, identity_show, inode->i_private);
663}
664
665static const struct file_operations identity_fops = {
666 .open = identity_open,
667 .read = seq_read,
668 .llseek = seq_lseek,
669 .release = single_release,
670};
671
672static int rpa_timeout_set(void *data, u64 val)
673{
674 struct hci_dev *hdev = data;
675
676 /* Require the RPA timeout to be at least 30 seconds and at most
677 * 24 hours.
678 */
679 if (val < 30 || val > (60 * 60 * 24))
680 return -EINVAL;
681
682 hci_dev_lock(hdev);
683 hdev->rpa_timeout = val;
684 hci_dev_unlock(hdev);
685
686 return 0;
687}
688
689static int rpa_timeout_get(void *data, u64 *val)
690{
691 struct hci_dev *hdev = data;
692
693 hci_dev_lock(hdev);
694 *val = hdev->rpa_timeout;
695 hci_dev_unlock(hdev);
696
697 return 0;
698}
699
700DEFINE_SIMPLE_ATTRIBUTE(rpa_timeout_fops, rpa_timeout_get,
701 rpa_timeout_set, "%llu\n");
702
703static int random_address_show(struct seq_file *f, void *p)
704{
705 struct hci_dev *hdev = f->private;
706
707 hci_dev_lock(hdev);
708 seq_printf(f, "%pMR\n", &hdev->random_addr);
709 hci_dev_unlock(hdev);
710
711 return 0;
712}
713
714static int random_address_open(struct inode *inode, struct file *file)
715{
716 return single_open(file, random_address_show, inode->i_private);
717}
718
719static const struct file_operations random_address_fops = {
720 .open = random_address_open,
721 .read = seq_read,
722 .llseek = seq_lseek,
723 .release = single_release,
724};
725
726static int static_address_show(struct seq_file *f, void *p)
727{
728 struct hci_dev *hdev = f->private;
729
730 hci_dev_lock(hdev);
731 seq_printf(f, "%pMR\n", &hdev->static_addr);
732 hci_dev_unlock(hdev);
733
734 return 0;
735}
736
737static int static_address_open(struct inode *inode, struct file *file)
738{
739 return single_open(file, static_address_show, inode->i_private);
740}
741
742static const struct file_operations static_address_fops = {
743 .open = static_address_open,
744 .read = seq_read,
745 .llseek = seq_lseek,
746 .release = single_release,
747};
748
749static ssize_t force_static_address_read(struct file *file,
750 char __user *user_buf,
751 size_t count, loff_t *ppos)
752{
753 struct hci_dev *hdev = file->private_data;
754 char buf[3];
755
756 buf[0] = hci_dev_test_flag(hdev, HCI_FORCE_STATIC_ADDR) ? 'Y': 'N';
757 buf[1] = '\n';
758 buf[2] = '\0';
759 return simple_read_from_buffer(user_buf, count, ppos, buf, 2);
760}
761
762static ssize_t force_static_address_write(struct file *file,
763 const char __user *user_buf,
764 size_t count, loff_t *ppos)
765{
766 struct hci_dev *hdev = file->private_data;
767 char buf[32];
768 size_t buf_size = min(count, (sizeof(buf)-1));
769 bool enable;
770
771 if (test_bit(HCI_UP, &hdev->flags))
772 return -EBUSY;
773
774 if (copy_from_user(buf, user_buf, buf_size))
775 return -EFAULT;
776
777 buf[buf_size] = '\0';
778 if (strtobool(buf, &enable))
779 return -EINVAL;
780
781 if (enable == hci_dev_test_flag(hdev, HCI_FORCE_STATIC_ADDR))
782 return -EALREADY;
783
784 hci_dev_change_flag(hdev, HCI_FORCE_STATIC_ADDR);
785
786 return count;
787}
788
789static const struct file_operations force_static_address_fops = {
790 .open = simple_open,
791 .read = force_static_address_read,
792 .write = force_static_address_write,
793 .llseek = default_llseek,
794};
795
796static int white_list_show(struct seq_file *f, void *ptr)
797{
798 struct hci_dev *hdev = f->private;
799 struct bdaddr_list *b;
800
801 hci_dev_lock(hdev);
802 list_for_each_entry(b, &hdev->le_white_list, list)
803 seq_printf(f, "%pMR (type %u)\n", &b->bdaddr, b->bdaddr_type);
804 hci_dev_unlock(hdev);
805
806 return 0;
807}
808
809static int white_list_open(struct inode *inode, struct file *file)
810{
811 return single_open(file, white_list_show, inode->i_private);
812}
813
814static const struct file_operations white_list_fops = {
815 .open = white_list_open,
816 .read = seq_read,
817 .llseek = seq_lseek,
818 .release = single_release,
819};
820
821static int identity_resolving_keys_show(struct seq_file *f, void *ptr)
822{
823 struct hci_dev *hdev = f->private;
824 struct smp_irk *irk;
825
826 rcu_read_lock();
827 list_for_each_entry_rcu(irk, &hdev->identity_resolving_keys, list) {
828 seq_printf(f, "%pMR (type %u) %*phN %pMR\n",
829 &irk->bdaddr, irk->addr_type,
830 16, irk->val, &irk->rpa);
831 }
832 rcu_read_unlock();
833
834 return 0;
835}
836
837static int identity_resolving_keys_open(struct inode *inode, struct file *file)
838{
839 return single_open(file, identity_resolving_keys_show,
840 inode->i_private);
841}
842
843static const struct file_operations identity_resolving_keys_fops = {
844 .open = identity_resolving_keys_open,
845 .read = seq_read,
846 .llseek = seq_lseek,
847 .release = single_release,
848};
849
850static int long_term_keys_show(struct seq_file *f, void *ptr)
851{
852 struct hci_dev *hdev = f->private;
853 struct smp_ltk *ltk;
854
855 rcu_read_lock();
856 list_for_each_entry_rcu(ltk, &hdev->long_term_keys, list)
857 seq_printf(f, "%pMR (type %u) %u 0x%02x %u %.4x %.16llx %*phN\n",
858 <k->bdaddr, ltk->bdaddr_type, ltk->authenticated,
859 ltk->type, ltk->enc_size, __le16_to_cpu(ltk->ediv),
860 __le64_to_cpu(ltk->rand), 16, ltk->val);
861 rcu_read_unlock();
862
863 return 0;
864}
865
866static int long_term_keys_open(struct inode *inode, struct file *file)
867{
868 return single_open(file, long_term_keys_show, inode->i_private);
869}
870
871static const struct file_operations long_term_keys_fops = {
872 .open = long_term_keys_open,
873 .read = seq_read,
874 .llseek = seq_lseek,
875 .release = single_release,
876};
877
878static int conn_min_interval_set(void *data, u64 val)
879{
880 struct hci_dev *hdev = data;
881
882 if (val < 0x0006 || val > 0x0c80 || val > hdev->le_conn_max_interval)
883 return -EINVAL;
884
885 hci_dev_lock(hdev);
886 hdev->le_conn_min_interval = val;
887 hci_dev_unlock(hdev);
888
889 return 0;
890}
891
892static int conn_min_interval_get(void *data, u64 *val)
893{
894 struct hci_dev *hdev = data;
895
896 hci_dev_lock(hdev);
897 *val = hdev->le_conn_min_interval;
898 hci_dev_unlock(hdev);
899
900 return 0;
901}
902
903DEFINE_SIMPLE_ATTRIBUTE(conn_min_interval_fops, conn_min_interval_get,
904 conn_min_interval_set, "%llu\n");
905
906static int conn_max_interval_set(void *data, u64 val)
907{
908 struct hci_dev *hdev = data;
909
910 if (val < 0x0006 || val > 0x0c80 || val < hdev->le_conn_min_interval)
911 return -EINVAL;
912
913 hci_dev_lock(hdev);
914 hdev->le_conn_max_interval = val;
915 hci_dev_unlock(hdev);
916
917 return 0;
918}
919
920static int conn_max_interval_get(void *data, u64 *val)
921{
922 struct hci_dev *hdev = data;
923
924 hci_dev_lock(hdev);
925 *val = hdev->le_conn_max_interval;
926 hci_dev_unlock(hdev);
927
928 return 0;
929}
930
931DEFINE_SIMPLE_ATTRIBUTE(conn_max_interval_fops, conn_max_interval_get,
932 conn_max_interval_set, "%llu\n");
933
934static int conn_latency_set(void *data, u64 val)
935{
936 struct hci_dev *hdev = data;
937
938 if (val > 0x01f3)
939 return -EINVAL;
940
941 hci_dev_lock(hdev);
942 hdev->le_conn_latency = val;
943 hci_dev_unlock(hdev);
944
945 return 0;
946}
947
948static int conn_latency_get(void *data, u64 *val)
949{
950 struct hci_dev *hdev = data;
951
952 hci_dev_lock(hdev);
953 *val = hdev->le_conn_latency;
954 hci_dev_unlock(hdev);
955
956 return 0;
957}
958
959DEFINE_SIMPLE_ATTRIBUTE(conn_latency_fops, conn_latency_get,
960 conn_latency_set, "%llu\n");
961
962static int supervision_timeout_set(void *data, u64 val)
963{
964 struct hci_dev *hdev = data;
965
966 if (val < 0x000a || val > 0x0c80)
967 return -EINVAL;
968
969 hci_dev_lock(hdev);
970 hdev->le_supv_timeout = val;
971 hci_dev_unlock(hdev);
972
973 return 0;
974}
975
976static int supervision_timeout_get(void *data, u64 *val)
977{
978 struct hci_dev *hdev = data;
979
980 hci_dev_lock(hdev);
981 *val = hdev->le_supv_timeout;
982 hci_dev_unlock(hdev);
983
984 return 0;
985}
986
987DEFINE_SIMPLE_ATTRIBUTE(supervision_timeout_fops, supervision_timeout_get,
988 supervision_timeout_set, "%llu\n");
989
990static int adv_channel_map_set(void *data, u64 val)
991{
992 struct hci_dev *hdev = data;
993
994 if (val < 0x01 || val > 0x07)
995 return -EINVAL;
996
997 hci_dev_lock(hdev);
998 hdev->le_adv_channel_map = val;
999 hci_dev_unlock(hdev);
1000
1001 return 0;
1002}
1003
1004static int adv_channel_map_get(void *data, u64 *val)
1005{
1006 struct hci_dev *hdev = data;
1007
1008 hci_dev_lock(hdev);
1009 *val = hdev->le_adv_channel_map;
1010 hci_dev_unlock(hdev);
1011
1012 return 0;
1013}
1014
1015DEFINE_SIMPLE_ATTRIBUTE(adv_channel_map_fops, adv_channel_map_get,
1016 adv_channel_map_set, "%llu\n");
1017
1018static int adv_min_interval_set(void *data, u64 val)
1019{
1020 struct hci_dev *hdev = data;
1021
1022 if (val < 0x0020 || val > 0x4000 || val > hdev->le_adv_max_interval)
1023 return -EINVAL;
1024
1025 hci_dev_lock(hdev);
1026 hdev->le_adv_min_interval = val;
1027 hci_dev_unlock(hdev);
1028
1029 return 0;
1030}
1031
1032static int adv_min_interval_get(void *data, u64 *val)
1033{
1034 struct hci_dev *hdev = data;
1035
1036 hci_dev_lock(hdev);
1037 *val = hdev->le_adv_min_interval;
1038 hci_dev_unlock(hdev);
1039
1040 return 0;
1041}
1042
1043DEFINE_SIMPLE_ATTRIBUTE(adv_min_interval_fops, adv_min_interval_get,
1044 adv_min_interval_set, "%llu\n");
1045
1046static int adv_max_interval_set(void *data, u64 val)
1047{
1048 struct hci_dev *hdev = data;
1049
1050 if (val < 0x0020 || val > 0x4000 || val < hdev->le_adv_min_interval)
1051 return -EINVAL;
1052
1053 hci_dev_lock(hdev);
1054 hdev->le_adv_max_interval = val;
1055 hci_dev_unlock(hdev);
1056
1057 return 0;
1058}
1059
1060static int adv_max_interval_get(void *data, u64 *val)
1061{
1062 struct hci_dev *hdev = data;
1063
1064 hci_dev_lock(hdev);
1065 *val = hdev->le_adv_max_interval;
1066 hci_dev_unlock(hdev);
1067
1068 return 0;
1069}
1070
1071DEFINE_SIMPLE_ATTRIBUTE(adv_max_interval_fops, adv_max_interval_get,
1072 adv_max_interval_set, "%llu\n");
1073
1074DEFINE_QUIRK_ATTRIBUTE(quirk_strict_duplicate_filter,
1075 HCI_QUIRK_STRICT_DUPLICATE_FILTER);
1076DEFINE_QUIRK_ATTRIBUTE(quirk_simultaneous_discovery,
1077 HCI_QUIRK_SIMULTANEOUS_DISCOVERY);
1078
1079void hci_debugfs_create_le(struct hci_dev *hdev)
1080{
1081 debugfs_create_file("identity", 0400, hdev->debugfs, hdev,
1082 &identity_fops);
1083 debugfs_create_file("rpa_timeout", 0644, hdev->debugfs, hdev,
1084 &rpa_timeout_fops);
1085 debugfs_create_file("random_address", 0444, hdev->debugfs, hdev,
1086 &random_address_fops);
1087 debugfs_create_file("static_address", 0444, hdev->debugfs, hdev,
1088 &static_address_fops);
1089
1090 /* For controllers with a public address, provide a debug
1091 * option to force the usage of the configured static
1092 * address. By default the public address is used.
1093 */
1094 if (bacmp(&hdev->bdaddr, BDADDR_ANY))
1095 debugfs_create_file("force_static_address", 0644,
1096 hdev->debugfs, hdev,
1097 &force_static_address_fops);
1098
1099 debugfs_create_u8("white_list_size", 0444, hdev->debugfs,
1100 &hdev->le_white_list_size);
1101 debugfs_create_file("white_list", 0444, hdev->debugfs, hdev,
1102 &white_list_fops);
1103 debugfs_create_file("identity_resolving_keys", 0400, hdev->debugfs,
1104 hdev, &identity_resolving_keys_fops);
1105 debugfs_create_file("long_term_keys", 0400, hdev->debugfs, hdev,
1106 &long_term_keys_fops);
1107 debugfs_create_file("conn_min_interval", 0644, hdev->debugfs, hdev,
1108 &conn_min_interval_fops);
1109 debugfs_create_file("conn_max_interval", 0644, hdev->debugfs, hdev,
1110 &conn_max_interval_fops);
1111 debugfs_create_file("conn_latency", 0644, hdev->debugfs, hdev,
1112 &conn_latency_fops);
1113 debugfs_create_file("supervision_timeout", 0644, hdev->debugfs, hdev,
1114 &supervision_timeout_fops);
1115 debugfs_create_file("adv_channel_map", 0644, hdev->debugfs, hdev,
1116 &adv_channel_map_fops);
1117 debugfs_create_file("adv_min_interval", 0644, hdev->debugfs, hdev,
1118 &adv_min_interval_fops);
1119 debugfs_create_file("adv_max_interval", 0644, hdev->debugfs, hdev,
1120 &adv_max_interval_fops);
1121 debugfs_create_u16("discov_interleaved_timeout", 0644, hdev->debugfs,
1122 &hdev->discov_interleaved_timeout);
1123
1124 debugfs_create_file("quirk_strict_duplicate_filter", 0644,
1125 hdev->debugfs, hdev,
1126 &quirk_strict_duplicate_filter_fops);
1127 debugfs_create_file("quirk_simultaneous_discovery", 0644,
1128 hdev->debugfs, hdev,
1129 &quirk_simultaneous_discovery_fops);
1130}
1131
1132void hci_debugfs_create_conn(struct hci_conn *conn)
1133{
1134 struct hci_dev *hdev = conn->hdev;
1135 char name[6];
1136
1137 if (IS_ERR_OR_NULL(hdev->debugfs))
1138 return;
1139
1140 snprintf(name, sizeof(name), "%u", conn->handle);
1141 conn->debugfs = debugfs_create_dir(name, hdev->debugfs);
1142}