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