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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#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_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 hci_dev_lock(hdev);
221 if (val == 0 || val > hdev->conn_info_max_age) {
222 hci_dev_unlock(hdev);
223 return -EINVAL;
224 }
225
226 hdev->conn_info_min_age = val;
227 hci_dev_unlock(hdev);
228
229 return 0;
230}
231
232static int conn_info_min_age_get(void *data, u64 *val)
233{
234 struct hci_dev *hdev = data;
235
236 hci_dev_lock(hdev);
237 *val = hdev->conn_info_min_age;
238 hci_dev_unlock(hdev);
239
240 return 0;
241}
242
243DEFINE_DEBUGFS_ATTRIBUTE(conn_info_min_age_fops, conn_info_min_age_get,
244 conn_info_min_age_set, "%llu\n");
245
246static int conn_info_max_age_set(void *data, u64 val)
247{
248 struct hci_dev *hdev = data;
249
250 hci_dev_lock(hdev);
251 if (val == 0 || val < hdev->conn_info_min_age) {
252 hci_dev_unlock(hdev);
253 return -EINVAL;
254 }
255
256 hdev->conn_info_max_age = val;
257 hci_dev_unlock(hdev);
258
259 return 0;
260}
261
262static int conn_info_max_age_get(void *data, u64 *val)
263{
264 struct hci_dev *hdev = data;
265
266 hci_dev_lock(hdev);
267 *val = hdev->conn_info_max_age;
268 hci_dev_unlock(hdev);
269
270 return 0;
271}
272
273DEFINE_DEBUGFS_ATTRIBUTE(conn_info_max_age_fops, conn_info_max_age_get,
274 conn_info_max_age_set, "%llu\n");
275
276static ssize_t use_debug_keys_read(struct file *file, char __user *user_buf,
277 size_t count, loff_t *ppos)
278{
279 struct hci_dev *hdev = file->private_data;
280 char buf[3];
281
282 buf[0] = hci_dev_test_flag(hdev, HCI_USE_DEBUG_KEYS) ? 'Y' : 'N';
283 buf[1] = '\n';
284 buf[2] = '\0';
285 return simple_read_from_buffer(user_buf, count, ppos, buf, 2);
286}
287
288static const struct file_operations use_debug_keys_fops = {
289 .open = simple_open,
290 .read = use_debug_keys_read,
291 .llseek = default_llseek,
292};
293
294static ssize_t sc_only_mode_read(struct file *file, char __user *user_buf,
295 size_t count, loff_t *ppos)
296{
297 struct hci_dev *hdev = file->private_data;
298 char buf[3];
299
300 buf[0] = hci_dev_test_flag(hdev, HCI_SC_ONLY) ? 'Y' : 'N';
301 buf[1] = '\n';
302 buf[2] = '\0';
303 return simple_read_from_buffer(user_buf, count, ppos, buf, 2);
304}
305
306static const struct file_operations sc_only_mode_fops = {
307 .open = simple_open,
308 .read = sc_only_mode_read,
309 .llseek = default_llseek,
310};
311
312DEFINE_INFO_ATTRIBUTE(hardware_info, hw_info);
313DEFINE_INFO_ATTRIBUTE(firmware_info, fw_info);
314
315void hci_debugfs_create_common(struct hci_dev *hdev)
316{
317 debugfs_create_file("features", 0444, hdev->debugfs, hdev,
318 &features_fops);
319 debugfs_create_u16("manufacturer", 0444, hdev->debugfs,
320 &hdev->manufacturer);
321 debugfs_create_u8("hci_version", 0444, hdev->debugfs, &hdev->hci_ver);
322 debugfs_create_u16("hci_revision", 0444, hdev->debugfs, &hdev->hci_rev);
323 debugfs_create_u8("hardware_error", 0444, hdev->debugfs,
324 &hdev->hw_error_code);
325 debugfs_create_file("device_id", 0444, hdev->debugfs, hdev,
326 &device_id_fops);
327
328 debugfs_create_file("device_list", 0444, hdev->debugfs, hdev,
329 &device_list_fops);
330 debugfs_create_file("blacklist", 0444, hdev->debugfs, hdev,
331 &blacklist_fops);
332 debugfs_create_file("blocked_keys", 0444, hdev->debugfs, hdev,
333 &blocked_keys_fops);
334 debugfs_create_file("uuids", 0444, hdev->debugfs, hdev, &uuids_fops);
335 debugfs_create_file("remote_oob", 0400, hdev->debugfs, hdev,
336 &remote_oob_fops);
337
338 debugfs_create_file("conn_info_min_age", 0644, hdev->debugfs, hdev,
339 &conn_info_min_age_fops);
340 debugfs_create_file("conn_info_max_age", 0644, hdev->debugfs, hdev,
341 &conn_info_max_age_fops);
342
343 if (lmp_ssp_capable(hdev) || lmp_le_capable(hdev))
344 debugfs_create_file("use_debug_keys", 0444, hdev->debugfs,
345 hdev, &use_debug_keys_fops);
346
347 if (lmp_sc_capable(hdev) || lmp_le_capable(hdev))
348 debugfs_create_file("sc_only_mode", 0444, hdev->debugfs,
349 hdev, &sc_only_mode_fops);
350
351 if (hdev->hw_info)
352 debugfs_create_file("hardware_info", 0444, hdev->debugfs,
353 hdev, &hardware_info_fops);
354
355 if (hdev->fw_info)
356 debugfs_create_file("firmware_info", 0444, hdev->debugfs,
357 hdev, &firmware_info_fops);
358}
359
360static int inquiry_cache_show(struct seq_file *f, void *p)
361{
362 struct hci_dev *hdev = f->private;
363 struct discovery_state *cache = &hdev->discovery;
364 struct inquiry_entry *e;
365
366 hci_dev_lock(hdev);
367
368 list_for_each_entry(e, &cache->all, all) {
369 struct inquiry_data *data = &e->data;
370 seq_printf(f, "%pMR %d %d %d 0x%.2x%.2x%.2x 0x%.4x %d %d %u\n",
371 &data->bdaddr,
372 data->pscan_rep_mode, data->pscan_period_mode,
373 data->pscan_mode, data->dev_class[2],
374 data->dev_class[1], data->dev_class[0],
375 __le16_to_cpu(data->clock_offset),
376 data->rssi, data->ssp_mode, e->timestamp);
377 }
378
379 hci_dev_unlock(hdev);
380
381 return 0;
382}
383
384DEFINE_SHOW_ATTRIBUTE(inquiry_cache);
385
386static int link_keys_show(struct seq_file *f, void *ptr)
387{
388 struct hci_dev *hdev = f->private;
389 struct link_key *key;
390
391 rcu_read_lock();
392 list_for_each_entry_rcu(key, &hdev->link_keys, list)
393 seq_printf(f, "%pMR %u %*phN %u\n", &key->bdaddr, key->type,
394 HCI_LINK_KEY_SIZE, key->val, key->pin_len);
395 rcu_read_unlock();
396
397 return 0;
398}
399
400DEFINE_SHOW_ATTRIBUTE(link_keys);
401
402static int dev_class_show(struct seq_file *f, void *ptr)
403{
404 struct hci_dev *hdev = f->private;
405
406 hci_dev_lock(hdev);
407 seq_printf(f, "0x%.2x%.2x%.2x\n", hdev->dev_class[2],
408 hdev->dev_class[1], hdev->dev_class[0]);
409 hci_dev_unlock(hdev);
410
411 return 0;
412}
413
414DEFINE_SHOW_ATTRIBUTE(dev_class);
415
416static int voice_setting_get(void *data, u64 *val)
417{
418 struct hci_dev *hdev = data;
419
420 hci_dev_lock(hdev);
421 *val = hdev->voice_setting;
422 hci_dev_unlock(hdev);
423
424 return 0;
425}
426
427DEFINE_DEBUGFS_ATTRIBUTE(voice_setting_fops, voice_setting_get,
428 NULL, "0x%4.4llx\n");
429
430static ssize_t ssp_debug_mode_read(struct file *file, char __user *user_buf,
431 size_t count, loff_t *ppos)
432{
433 struct hci_dev *hdev = file->private_data;
434 char buf[3];
435
436 buf[0] = hdev->ssp_debug_mode ? 'Y' : 'N';
437 buf[1] = '\n';
438 buf[2] = '\0';
439 return simple_read_from_buffer(user_buf, count, ppos, buf, 2);
440}
441
442static const struct file_operations ssp_debug_mode_fops = {
443 .open = simple_open,
444 .read = ssp_debug_mode_read,
445 .llseek = default_llseek,
446};
447
448static int auto_accept_delay_set(void *data, u64 val)
449{
450 struct hci_dev *hdev = data;
451
452 hci_dev_lock(hdev);
453 hdev->auto_accept_delay = val;
454 hci_dev_unlock(hdev);
455
456 return 0;
457}
458
459static int min_encrypt_key_size_set(void *data, u64 val)
460{
461 struct hci_dev *hdev = data;
462
463 if (val < 1 || val > 16)
464 return -EINVAL;
465
466 hci_dev_lock(hdev);
467 hdev->min_enc_key_size = val;
468 hci_dev_unlock(hdev);
469
470 return 0;
471}
472
473static int min_encrypt_key_size_get(void *data, u64 *val)
474{
475 struct hci_dev *hdev = data;
476
477 hci_dev_lock(hdev);
478 *val = hdev->min_enc_key_size;
479 hci_dev_unlock(hdev);
480
481 return 0;
482}
483
484DEFINE_DEBUGFS_ATTRIBUTE(min_encrypt_key_size_fops,
485 min_encrypt_key_size_get,
486 min_encrypt_key_size_set, "%llu\n");
487
488static int auto_accept_delay_get(void *data, u64 *val)
489{
490 struct hci_dev *hdev = data;
491
492 hci_dev_lock(hdev);
493 *val = hdev->auto_accept_delay;
494 hci_dev_unlock(hdev);
495
496 return 0;
497}
498
499DEFINE_DEBUGFS_ATTRIBUTE(auto_accept_delay_fops, auto_accept_delay_get,
500 auto_accept_delay_set, "%llu\n");
501
502static ssize_t force_bredr_smp_read(struct file *file,
503 char __user *user_buf,
504 size_t count, loff_t *ppos)
505{
506 struct hci_dev *hdev = file->private_data;
507 char buf[3];
508
509 buf[0] = hci_dev_test_flag(hdev, HCI_FORCE_BREDR_SMP) ? 'Y' : 'N';
510 buf[1] = '\n';
511 buf[2] = '\0';
512 return simple_read_from_buffer(user_buf, count, ppos, buf, 2);
513}
514
515static ssize_t force_bredr_smp_write(struct file *file,
516 const char __user *user_buf,
517 size_t count, loff_t *ppos)
518{
519 struct hci_dev *hdev = file->private_data;
520 bool enable;
521 int err;
522
523 err = kstrtobool_from_user(user_buf, count, &enable);
524 if (err)
525 return err;
526
527 err = smp_force_bredr(hdev, enable);
528 if (err)
529 return err;
530
531 return count;
532}
533
534static const struct file_operations force_bredr_smp_fops = {
535 .open = simple_open,
536 .read = force_bredr_smp_read,
537 .write = force_bredr_smp_write,
538 .llseek = default_llseek,
539};
540
541static int idle_timeout_set(void *data, u64 val)
542{
543 struct hci_dev *hdev = data;
544
545 if (val != 0 && (val < 500 || val > 3600000))
546 return -EINVAL;
547
548 hci_dev_lock(hdev);
549 hdev->idle_timeout = val;
550 hci_dev_unlock(hdev);
551
552 return 0;
553}
554
555static int idle_timeout_get(void *data, u64 *val)
556{
557 struct hci_dev *hdev = data;
558
559 hci_dev_lock(hdev);
560 *val = hdev->idle_timeout;
561 hci_dev_unlock(hdev);
562
563 return 0;
564}
565
566DEFINE_DEBUGFS_ATTRIBUTE(idle_timeout_fops, idle_timeout_get,
567 idle_timeout_set, "%llu\n");
568
569static int sniff_min_interval_set(void *data, u64 val)
570{
571 struct hci_dev *hdev = data;
572
573 hci_dev_lock(hdev);
574 if (val == 0 || val % 2 || val > hdev->sniff_max_interval) {
575 hci_dev_unlock(hdev);
576 return -EINVAL;
577 }
578
579 hdev->sniff_min_interval = val;
580 hci_dev_unlock(hdev);
581
582 return 0;
583}
584
585static int sniff_min_interval_get(void *data, u64 *val)
586{
587 struct hci_dev *hdev = data;
588
589 hci_dev_lock(hdev);
590 *val = hdev->sniff_min_interval;
591 hci_dev_unlock(hdev);
592
593 return 0;
594}
595
596DEFINE_DEBUGFS_ATTRIBUTE(sniff_min_interval_fops, sniff_min_interval_get,
597 sniff_min_interval_set, "%llu\n");
598
599static int sniff_max_interval_set(void *data, u64 val)
600{
601 struct hci_dev *hdev = data;
602
603 hci_dev_lock(hdev);
604 if (val == 0 || val % 2 || val < hdev->sniff_min_interval) {
605 hci_dev_unlock(hdev);
606 return -EINVAL;
607 }
608
609 hdev->sniff_max_interval = val;
610 hci_dev_unlock(hdev);
611
612 return 0;
613}
614
615static int sniff_max_interval_get(void *data, u64 *val)
616{
617 struct hci_dev *hdev = data;
618
619 hci_dev_lock(hdev);
620 *val = hdev->sniff_max_interval;
621 hci_dev_unlock(hdev);
622
623 return 0;
624}
625
626DEFINE_DEBUGFS_ATTRIBUTE(sniff_max_interval_fops, sniff_max_interval_get,
627 sniff_max_interval_set, "%llu\n");
628
629void hci_debugfs_create_bredr(struct hci_dev *hdev)
630{
631 debugfs_create_file("inquiry_cache", 0444, hdev->debugfs, hdev,
632 &inquiry_cache_fops);
633 debugfs_create_file("link_keys", 0400, hdev->debugfs, hdev,
634 &link_keys_fops);
635 debugfs_create_file("dev_class", 0444, hdev->debugfs, hdev,
636 &dev_class_fops);
637 debugfs_create_file("voice_setting", 0444, hdev->debugfs, hdev,
638 &voice_setting_fops);
639
640 /* If the controller does not support BR/EDR Secure Connections
641 * feature, then the BR/EDR SMP channel shall not be present.
642 *
643 * To test this with Bluetooth 4.0 controllers, create a debugfs
644 * switch that allows forcing BR/EDR SMP support and accepting
645 * cross-transport pairing on non-AES encrypted connections.
646 */
647 if (!lmp_sc_capable(hdev))
648 debugfs_create_file("force_bredr_smp", 0644, hdev->debugfs,
649 hdev, &force_bredr_smp_fops);
650
651 if (lmp_ssp_capable(hdev)) {
652 debugfs_create_file("ssp_debug_mode", 0444, hdev->debugfs,
653 hdev, &ssp_debug_mode_fops);
654 debugfs_create_file("min_encrypt_key_size", 0644, hdev->debugfs,
655 hdev, &min_encrypt_key_size_fops);
656 debugfs_create_file("auto_accept_delay", 0644, hdev->debugfs,
657 hdev, &auto_accept_delay_fops);
658 }
659
660 if (lmp_sniff_capable(hdev)) {
661 debugfs_create_file("idle_timeout", 0644, hdev->debugfs,
662 hdev, &idle_timeout_fops);
663 debugfs_create_file("sniff_min_interval", 0644, hdev->debugfs,
664 hdev, &sniff_min_interval_fops);
665 debugfs_create_file("sniff_max_interval", 0644, hdev->debugfs,
666 hdev, &sniff_max_interval_fops);
667 }
668}
669
670static int identity_show(struct seq_file *f, void *p)
671{
672 struct hci_dev *hdev = f->private;
673 bdaddr_t addr;
674 u8 addr_type;
675
676 hci_dev_lock(hdev);
677
678 hci_copy_identity_address(hdev, &addr, &addr_type);
679
680 seq_printf(f, "%pMR (type %u) %*phN %pMR\n", &addr, addr_type,
681 16, hdev->irk, &hdev->rpa);
682
683 hci_dev_unlock(hdev);
684
685 return 0;
686}
687
688DEFINE_SHOW_ATTRIBUTE(identity);
689
690static int rpa_timeout_set(void *data, u64 val)
691{
692 struct hci_dev *hdev = data;
693
694 /* Require the RPA timeout to be at least 30 seconds and at most
695 * 24 hours.
696 */
697 if (val < 30 || val > (60 * 60 * 24))
698 return -EINVAL;
699
700 hci_dev_lock(hdev);
701 hdev->rpa_timeout = val;
702 hci_dev_unlock(hdev);
703
704 return 0;
705}
706
707static int rpa_timeout_get(void *data, u64 *val)
708{
709 struct hci_dev *hdev = data;
710
711 hci_dev_lock(hdev);
712 *val = hdev->rpa_timeout;
713 hci_dev_unlock(hdev);
714
715 return 0;
716}
717
718DEFINE_DEBUGFS_ATTRIBUTE(rpa_timeout_fops, rpa_timeout_get,
719 rpa_timeout_set, "%llu\n");
720
721static int random_address_show(struct seq_file *f, void *p)
722{
723 struct hci_dev *hdev = f->private;
724
725 hci_dev_lock(hdev);
726 seq_printf(f, "%pMR\n", &hdev->random_addr);
727 hci_dev_unlock(hdev);
728
729 return 0;
730}
731
732DEFINE_SHOW_ATTRIBUTE(random_address);
733
734static int static_address_show(struct seq_file *f, void *p)
735{
736 struct hci_dev *hdev = f->private;
737
738 hci_dev_lock(hdev);
739 seq_printf(f, "%pMR\n", &hdev->static_addr);
740 hci_dev_unlock(hdev);
741
742 return 0;
743}
744
745DEFINE_SHOW_ATTRIBUTE(static_address);
746
747static ssize_t force_static_address_read(struct file *file,
748 char __user *user_buf,
749 size_t count, loff_t *ppos)
750{
751 struct hci_dev *hdev = file->private_data;
752 char buf[3];
753
754 buf[0] = hci_dev_test_flag(hdev, HCI_FORCE_STATIC_ADDR) ? 'Y' : 'N';
755 buf[1] = '\n';
756 buf[2] = '\0';
757 return simple_read_from_buffer(user_buf, count, ppos, buf, 2);
758}
759
760static ssize_t force_static_address_write(struct file *file,
761 const char __user *user_buf,
762 size_t count, loff_t *ppos)
763{
764 struct hci_dev *hdev = file->private_data;
765 bool enable;
766 int err;
767
768 if (hdev_is_powered(hdev))
769 return -EBUSY;
770
771 err = kstrtobool_from_user(user_buf, count, &enable);
772 if (err)
773 return err;
774
775 if (enable == hci_dev_test_flag(hdev, HCI_FORCE_STATIC_ADDR))
776 return -EALREADY;
777
778 hci_dev_change_flag(hdev, HCI_FORCE_STATIC_ADDR);
779
780 return count;
781}
782
783static const struct file_operations force_static_address_fops = {
784 .open = simple_open,
785 .read = force_static_address_read,
786 .write = force_static_address_write,
787 .llseek = default_llseek,
788};
789
790static int white_list_show(struct seq_file *f, void *ptr)
791{
792 struct hci_dev *hdev = f->private;
793 struct bdaddr_list *b;
794
795 hci_dev_lock(hdev);
796 list_for_each_entry(b, &hdev->le_accept_list, list)
797 seq_printf(f, "%pMR (type %u)\n", &b->bdaddr, b->bdaddr_type);
798 hci_dev_unlock(hdev);
799
800 return 0;
801}
802
803DEFINE_SHOW_ATTRIBUTE(white_list);
804
805static int resolv_list_show(struct seq_file *f, void *ptr)
806{
807 struct hci_dev *hdev = f->private;
808 struct bdaddr_list *b;
809
810 hci_dev_lock(hdev);
811 list_for_each_entry(b, &hdev->le_resolv_list, list)
812 seq_printf(f, "%pMR (type %u)\n", &b->bdaddr, b->bdaddr_type);
813 hci_dev_unlock(hdev);
814
815 return 0;
816}
817
818DEFINE_SHOW_ATTRIBUTE(resolv_list);
819
820static int identity_resolving_keys_show(struct seq_file *f, void *ptr)
821{
822 struct hci_dev *hdev = f->private;
823 struct smp_irk *irk;
824
825 rcu_read_lock();
826 list_for_each_entry_rcu(irk, &hdev->identity_resolving_keys, list) {
827 seq_printf(f, "%pMR (type %u) %*phN %pMR\n",
828 &irk->bdaddr, irk->addr_type,
829 16, irk->val, &irk->rpa);
830 }
831 rcu_read_unlock();
832
833 return 0;
834}
835
836DEFINE_SHOW_ATTRIBUTE(identity_resolving_keys);
837
838static int long_term_keys_show(struct seq_file *f, void *ptr)
839{
840 struct hci_dev *hdev = f->private;
841 struct smp_ltk *ltk;
842
843 rcu_read_lock();
844 list_for_each_entry_rcu(ltk, &hdev->long_term_keys, list)
845 seq_printf(f, "%pMR (type %u) %u 0x%02x %u %.4x %.16llx %*phN\n",
846 <k->bdaddr, ltk->bdaddr_type, ltk->authenticated,
847 ltk->type, ltk->enc_size, __le16_to_cpu(ltk->ediv),
848 __le64_to_cpu(ltk->rand), 16, ltk->val);
849 rcu_read_unlock();
850
851 return 0;
852}
853
854DEFINE_SHOW_ATTRIBUTE(long_term_keys);
855
856static int conn_min_interval_set(void *data, u64 val)
857{
858 struct hci_dev *hdev = data;
859
860 hci_dev_lock(hdev);
861 if (val < 0x0006 || val > 0x0c80 || val > hdev->le_conn_max_interval) {
862 hci_dev_unlock(hdev);
863 return -EINVAL;
864 }
865
866 hdev->le_conn_min_interval = val;
867 hci_dev_unlock(hdev);
868
869 return 0;
870}
871
872static int conn_min_interval_get(void *data, u64 *val)
873{
874 struct hci_dev *hdev = data;
875
876 hci_dev_lock(hdev);
877 *val = hdev->le_conn_min_interval;
878 hci_dev_unlock(hdev);
879
880 return 0;
881}
882
883DEFINE_DEBUGFS_ATTRIBUTE(conn_min_interval_fops, conn_min_interval_get,
884 conn_min_interval_set, "%llu\n");
885
886static int conn_max_interval_set(void *data, u64 val)
887{
888 struct hci_dev *hdev = data;
889
890 hci_dev_lock(hdev);
891 if (val < 0x0006 || val > 0x0c80 || val < hdev->le_conn_min_interval) {
892 hci_dev_unlock(hdev);
893 return -EINVAL;
894 }
895
896 hdev->le_conn_max_interval = val;
897 hci_dev_unlock(hdev);
898
899 return 0;
900}
901
902static int conn_max_interval_get(void *data, u64 *val)
903{
904 struct hci_dev *hdev = data;
905
906 hci_dev_lock(hdev);
907 *val = hdev->le_conn_max_interval;
908 hci_dev_unlock(hdev);
909
910 return 0;
911}
912
913DEFINE_DEBUGFS_ATTRIBUTE(conn_max_interval_fops, conn_max_interval_get,
914 conn_max_interval_set, "%llu\n");
915
916static int conn_latency_set(void *data, u64 val)
917{
918 struct hci_dev *hdev = data;
919
920 if (val > 0x01f3)
921 return -EINVAL;
922
923 hci_dev_lock(hdev);
924 hdev->le_conn_latency = val;
925 hci_dev_unlock(hdev);
926
927 return 0;
928}
929
930static int conn_latency_get(void *data, u64 *val)
931{
932 struct hci_dev *hdev = data;
933
934 hci_dev_lock(hdev);
935 *val = hdev->le_conn_latency;
936 hci_dev_unlock(hdev);
937
938 return 0;
939}
940
941DEFINE_DEBUGFS_ATTRIBUTE(conn_latency_fops, conn_latency_get,
942 conn_latency_set, "%llu\n");
943
944static int supervision_timeout_set(void *data, u64 val)
945{
946 struct hci_dev *hdev = data;
947
948 if (val < 0x000a || val > 0x0c80)
949 return -EINVAL;
950
951 hci_dev_lock(hdev);
952 hdev->le_supv_timeout = val;
953 hci_dev_unlock(hdev);
954
955 return 0;
956}
957
958static int supervision_timeout_get(void *data, u64 *val)
959{
960 struct hci_dev *hdev = data;
961
962 hci_dev_lock(hdev);
963 *val = hdev->le_supv_timeout;
964 hci_dev_unlock(hdev);
965
966 return 0;
967}
968
969DEFINE_DEBUGFS_ATTRIBUTE(supervision_timeout_fops, supervision_timeout_get,
970 supervision_timeout_set, "%llu\n");
971
972static int adv_channel_map_set(void *data, u64 val)
973{
974 struct hci_dev *hdev = data;
975
976 if (val < 0x01 || val > 0x07)
977 return -EINVAL;
978
979 hci_dev_lock(hdev);
980 hdev->le_adv_channel_map = val;
981 hci_dev_unlock(hdev);
982
983 return 0;
984}
985
986static int adv_channel_map_get(void *data, u64 *val)
987{
988 struct hci_dev *hdev = data;
989
990 hci_dev_lock(hdev);
991 *val = hdev->le_adv_channel_map;
992 hci_dev_unlock(hdev);
993
994 return 0;
995}
996
997DEFINE_DEBUGFS_ATTRIBUTE(adv_channel_map_fops, adv_channel_map_get,
998 adv_channel_map_set, "%llu\n");
999
1000static int adv_min_interval_set(void *data, u64 val)
1001{
1002 struct hci_dev *hdev = data;
1003
1004 hci_dev_lock(hdev);
1005 if (val < 0x0020 || val > 0x4000 || val > hdev->le_adv_max_interval) {
1006 hci_dev_unlock(hdev);
1007 return -EINVAL;
1008 }
1009
1010 hdev->le_adv_min_interval = val;
1011 hci_dev_unlock(hdev);
1012
1013 return 0;
1014}
1015
1016static int adv_min_interval_get(void *data, u64 *val)
1017{
1018 struct hci_dev *hdev = data;
1019
1020 hci_dev_lock(hdev);
1021 *val = hdev->le_adv_min_interval;
1022 hci_dev_unlock(hdev);
1023
1024 return 0;
1025}
1026
1027DEFINE_DEBUGFS_ATTRIBUTE(adv_min_interval_fops, adv_min_interval_get,
1028 adv_min_interval_set, "%llu\n");
1029
1030static int adv_max_interval_set(void *data, u64 val)
1031{
1032 struct hci_dev *hdev = data;
1033
1034 hci_dev_lock(hdev);
1035 if (val < 0x0020 || val > 0x4000 || val < hdev->le_adv_min_interval) {
1036 hci_dev_unlock(hdev);
1037 return -EINVAL;
1038 }
1039
1040 hdev->le_adv_max_interval = val;
1041 hci_dev_unlock(hdev);
1042
1043 return 0;
1044}
1045
1046static int adv_max_interval_get(void *data, u64 *val)
1047{
1048 struct hci_dev *hdev = data;
1049
1050 hci_dev_lock(hdev);
1051 *val = hdev->le_adv_max_interval;
1052 hci_dev_unlock(hdev);
1053
1054 return 0;
1055}
1056
1057DEFINE_DEBUGFS_ATTRIBUTE(adv_max_interval_fops, adv_max_interval_get,
1058 adv_max_interval_set, "%llu\n");
1059
1060static int min_key_size_set(void *data, u64 val)
1061{
1062 struct hci_dev *hdev = data;
1063
1064 hci_dev_lock(hdev);
1065 if (val > hdev->le_max_key_size || val < SMP_MIN_ENC_KEY_SIZE) {
1066 hci_dev_unlock(hdev);
1067 return -EINVAL;
1068 }
1069
1070 hdev->le_min_key_size = val;
1071 hci_dev_unlock(hdev);
1072
1073 return 0;
1074}
1075
1076static int min_key_size_get(void *data, u64 *val)
1077{
1078 struct hci_dev *hdev = data;
1079
1080 hci_dev_lock(hdev);
1081 *val = hdev->le_min_key_size;
1082 hci_dev_unlock(hdev);
1083
1084 return 0;
1085}
1086
1087DEFINE_DEBUGFS_ATTRIBUTE(min_key_size_fops, min_key_size_get,
1088 min_key_size_set, "%llu\n");
1089
1090static int max_key_size_set(void *data, u64 val)
1091{
1092 struct hci_dev *hdev = data;
1093
1094 hci_dev_lock(hdev);
1095 if (val > SMP_MAX_ENC_KEY_SIZE || val < hdev->le_min_key_size) {
1096 hci_dev_unlock(hdev);
1097 return -EINVAL;
1098 }
1099
1100 hdev->le_max_key_size = val;
1101 hci_dev_unlock(hdev);
1102
1103 return 0;
1104}
1105
1106static int max_key_size_get(void *data, u64 *val)
1107{
1108 struct hci_dev *hdev = data;
1109
1110 hci_dev_lock(hdev);
1111 *val = hdev->le_max_key_size;
1112 hci_dev_unlock(hdev);
1113
1114 return 0;
1115}
1116
1117DEFINE_DEBUGFS_ATTRIBUTE(max_key_size_fops, max_key_size_get,
1118 max_key_size_set, "%llu\n");
1119
1120static int auth_payload_timeout_set(void *data, u64 val)
1121{
1122 struct hci_dev *hdev = data;
1123
1124 if (val < 0x0001 || val > 0xffff)
1125 return -EINVAL;
1126
1127 hci_dev_lock(hdev);
1128 hdev->auth_payload_timeout = val;
1129 hci_dev_unlock(hdev);
1130
1131 return 0;
1132}
1133
1134static int auth_payload_timeout_get(void *data, u64 *val)
1135{
1136 struct hci_dev *hdev = data;
1137
1138 hci_dev_lock(hdev);
1139 *val = hdev->auth_payload_timeout;
1140 hci_dev_unlock(hdev);
1141
1142 return 0;
1143}
1144
1145DEFINE_DEBUGFS_ATTRIBUTE(auth_payload_timeout_fops,
1146 auth_payload_timeout_get,
1147 auth_payload_timeout_set, "%llu\n");
1148
1149static ssize_t force_no_mitm_read(struct file *file,
1150 char __user *user_buf,
1151 size_t count, loff_t *ppos)
1152{
1153 struct hci_dev *hdev = file->private_data;
1154 char buf[3];
1155
1156 buf[0] = hci_dev_test_flag(hdev, HCI_FORCE_NO_MITM) ? 'Y' : 'N';
1157 buf[1] = '\n';
1158 buf[2] = '\0';
1159 return simple_read_from_buffer(user_buf, count, ppos, buf, 2);
1160}
1161
1162static ssize_t force_no_mitm_write(struct file *file,
1163 const char __user *user_buf,
1164 size_t count, loff_t *ppos)
1165{
1166 struct hci_dev *hdev = file->private_data;
1167 char buf[32];
1168 size_t buf_size = min(count, (sizeof(buf) - 1));
1169 bool enable;
1170
1171 if (copy_from_user(buf, user_buf, buf_size))
1172 return -EFAULT;
1173
1174 buf[buf_size] = '\0';
1175 if (kstrtobool(buf, &enable))
1176 return -EINVAL;
1177
1178 if (enable == hci_dev_test_flag(hdev, HCI_FORCE_NO_MITM))
1179 return -EALREADY;
1180
1181 hci_dev_change_flag(hdev, HCI_FORCE_NO_MITM);
1182
1183 return count;
1184}
1185
1186static const struct file_operations force_no_mitm_fops = {
1187 .open = simple_open,
1188 .read = force_no_mitm_read,
1189 .write = force_no_mitm_write,
1190 .llseek = default_llseek,
1191};
1192
1193DEFINE_QUIRK_ATTRIBUTE(quirk_strict_duplicate_filter,
1194 HCI_QUIRK_STRICT_DUPLICATE_FILTER);
1195DEFINE_QUIRK_ATTRIBUTE(quirk_simultaneous_discovery,
1196 HCI_QUIRK_SIMULTANEOUS_DISCOVERY);
1197
1198void hci_debugfs_create_le(struct hci_dev *hdev)
1199{
1200 debugfs_create_file("identity", 0400, hdev->debugfs, hdev,
1201 &identity_fops);
1202 debugfs_create_file("rpa_timeout", 0644, hdev->debugfs, hdev,
1203 &rpa_timeout_fops);
1204 debugfs_create_file("random_address", 0444, hdev->debugfs, hdev,
1205 &random_address_fops);
1206 debugfs_create_file("static_address", 0444, hdev->debugfs, hdev,
1207 &static_address_fops);
1208
1209 /* For controllers with a public address, provide a debug
1210 * option to force the usage of the configured static
1211 * address. By default the public address is used.
1212 */
1213 if (bacmp(&hdev->bdaddr, BDADDR_ANY))
1214 debugfs_create_file("force_static_address", 0644,
1215 hdev->debugfs, hdev,
1216 &force_static_address_fops);
1217
1218 debugfs_create_u8("white_list_size", 0444, hdev->debugfs,
1219 &hdev->le_accept_list_size);
1220 debugfs_create_file("white_list", 0444, hdev->debugfs, hdev,
1221 &white_list_fops);
1222 debugfs_create_u8("resolv_list_size", 0444, hdev->debugfs,
1223 &hdev->le_resolv_list_size);
1224 debugfs_create_file("resolv_list", 0444, hdev->debugfs, hdev,
1225 &resolv_list_fops);
1226 debugfs_create_file("identity_resolving_keys", 0400, hdev->debugfs,
1227 hdev, &identity_resolving_keys_fops);
1228 debugfs_create_file("long_term_keys", 0400, hdev->debugfs, hdev,
1229 &long_term_keys_fops);
1230 debugfs_create_file("conn_min_interval", 0644, hdev->debugfs, hdev,
1231 &conn_min_interval_fops);
1232 debugfs_create_file("conn_max_interval", 0644, hdev->debugfs, hdev,
1233 &conn_max_interval_fops);
1234 debugfs_create_file("conn_latency", 0644, hdev->debugfs, hdev,
1235 &conn_latency_fops);
1236 debugfs_create_file("supervision_timeout", 0644, hdev->debugfs, hdev,
1237 &supervision_timeout_fops);
1238 debugfs_create_file("adv_channel_map", 0644, hdev->debugfs, hdev,
1239 &adv_channel_map_fops);
1240 debugfs_create_file("adv_min_interval", 0644, hdev->debugfs, hdev,
1241 &adv_min_interval_fops);
1242 debugfs_create_file("adv_max_interval", 0644, hdev->debugfs, hdev,
1243 &adv_max_interval_fops);
1244 debugfs_create_u16("discov_interleaved_timeout", 0644, hdev->debugfs,
1245 &hdev->discov_interleaved_timeout);
1246 debugfs_create_file("min_key_size", 0644, hdev->debugfs, hdev,
1247 &min_key_size_fops);
1248 debugfs_create_file("max_key_size", 0644, hdev->debugfs, hdev,
1249 &max_key_size_fops);
1250 debugfs_create_file("auth_payload_timeout", 0644, hdev->debugfs, hdev,
1251 &auth_payload_timeout_fops);
1252 debugfs_create_file("force_no_mitm", 0644, hdev->debugfs, hdev,
1253 &force_no_mitm_fops);
1254
1255 debugfs_create_file("quirk_strict_duplicate_filter", 0644,
1256 hdev->debugfs, hdev,
1257 &quirk_strict_duplicate_filter_fops);
1258 debugfs_create_file("quirk_simultaneous_discovery", 0644,
1259 hdev->debugfs, hdev,
1260 &quirk_simultaneous_discovery_fops);
1261}
1262
1263void hci_debugfs_create_conn(struct hci_conn *conn)
1264{
1265 struct hci_dev *hdev = conn->hdev;
1266 char name[6];
1267
1268 if (IS_ERR_OR_NULL(hdev->debugfs) || conn->debugfs)
1269 return;
1270
1271 snprintf(name, sizeof(name), "%u", conn->handle);
1272 conn->debugfs = debugfs_create_dir(name, hdev->debugfs);
1273}
1274
1275static ssize_t dut_mode_read(struct file *file, char __user *user_buf,
1276 size_t count, loff_t *ppos)
1277{
1278 struct hci_dev *hdev = file->private_data;
1279 char buf[3];
1280
1281 buf[0] = hci_dev_test_flag(hdev, HCI_DUT_MODE) ? 'Y' : 'N';
1282 buf[1] = '\n';
1283 buf[2] = '\0';
1284 return simple_read_from_buffer(user_buf, count, ppos, buf, 2);
1285}
1286
1287static ssize_t dut_mode_write(struct file *file, const char __user *user_buf,
1288 size_t count, loff_t *ppos)
1289{
1290 struct hci_dev *hdev = file->private_data;
1291 struct sk_buff *skb;
1292 bool enable;
1293 int err;
1294
1295 if (!test_bit(HCI_UP, &hdev->flags))
1296 return -ENETDOWN;
1297
1298 err = kstrtobool_from_user(user_buf, count, &enable);
1299 if (err)
1300 return err;
1301
1302 if (enable == hci_dev_test_flag(hdev, HCI_DUT_MODE))
1303 return -EALREADY;
1304
1305 hci_req_sync_lock(hdev);
1306 if (enable)
1307 skb = __hci_cmd_sync(hdev, HCI_OP_ENABLE_DUT_MODE, 0, NULL,
1308 HCI_CMD_TIMEOUT);
1309 else
1310 skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL,
1311 HCI_CMD_TIMEOUT);
1312 hci_req_sync_unlock(hdev);
1313
1314 if (IS_ERR(skb))
1315 return PTR_ERR(skb);
1316
1317 kfree_skb(skb);
1318
1319 hci_dev_change_flag(hdev, HCI_DUT_MODE);
1320
1321 return count;
1322}
1323
1324static const struct file_operations dut_mode_fops = {
1325 .open = simple_open,
1326 .read = dut_mode_read,
1327 .write = dut_mode_write,
1328 .llseek = default_llseek,
1329};
1330
1331static ssize_t vendor_diag_read(struct file *file, char __user *user_buf,
1332 size_t count, loff_t *ppos)
1333{
1334 struct hci_dev *hdev = file->private_data;
1335 char buf[3];
1336
1337 buf[0] = hci_dev_test_flag(hdev, HCI_VENDOR_DIAG) ? 'Y' : 'N';
1338 buf[1] = '\n';
1339 buf[2] = '\0';
1340 return simple_read_from_buffer(user_buf, count, ppos, buf, 2);
1341}
1342
1343static ssize_t vendor_diag_write(struct file *file, const char __user *user_buf,
1344 size_t count, loff_t *ppos)
1345{
1346 struct hci_dev *hdev = file->private_data;
1347 bool enable;
1348 int err;
1349
1350 err = kstrtobool_from_user(user_buf, count, &enable);
1351 if (err)
1352 return err;
1353
1354 /* When the diagnostic flags are not persistent and the transport
1355 * is not active or in user channel operation, then there is no need
1356 * for the vendor callback. Instead just store the desired value and
1357 * the setting will be programmed when the controller gets powered on.
1358 */
1359 if (test_bit(HCI_QUIRK_NON_PERSISTENT_DIAG, &hdev->quirks) &&
1360 (!test_bit(HCI_RUNNING, &hdev->flags) ||
1361 hci_dev_test_flag(hdev, HCI_USER_CHANNEL)))
1362 goto done;
1363
1364 hci_req_sync_lock(hdev);
1365 err = hdev->set_diag(hdev, enable);
1366 hci_req_sync_unlock(hdev);
1367
1368 if (err < 0)
1369 return err;
1370
1371done:
1372 if (enable)
1373 hci_dev_set_flag(hdev, HCI_VENDOR_DIAG);
1374 else
1375 hci_dev_clear_flag(hdev, HCI_VENDOR_DIAG);
1376
1377 return count;
1378}
1379
1380static const struct file_operations vendor_diag_fops = {
1381 .open = simple_open,
1382 .read = vendor_diag_read,
1383 .write = vendor_diag_write,
1384 .llseek = default_llseek,
1385};
1386
1387void hci_debugfs_create_basic(struct hci_dev *hdev)
1388{
1389 debugfs_create_file("dut_mode", 0644, hdev->debugfs, hdev,
1390 &dut_mode_fops);
1391
1392 if (hdev->set_diag)
1393 debugfs_create_file("vendor_diag", 0644, hdev->debugfs, hdev,
1394 &vendor_diag_fops);
1395}