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