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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_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}
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 hci_dev_lock(hdev);
222 if (val == 0 || val > hdev->conn_info_max_age) {
223 hci_dev_unlock(hdev);
224 return -EINVAL;
225 }
226
227 hdev->conn_info_min_age = val;
228 hci_dev_unlock(hdev);
229
230 return 0;
231}
232
233static int conn_info_min_age_get(void *data, u64 *val)
234{
235 struct hci_dev *hdev = data;
236
237 hci_dev_lock(hdev);
238 *val = hdev->conn_info_min_age;
239 hci_dev_unlock(hdev);
240
241 return 0;
242}
243
244DEFINE_DEBUGFS_ATTRIBUTE(conn_info_min_age_fops, conn_info_min_age_get,
245 conn_info_min_age_set, "%llu\n");
246
247static int conn_info_max_age_set(void *data, u64 val)
248{
249 struct hci_dev *hdev = data;
250
251 hci_dev_lock(hdev);
252 if (val == 0 || val < hdev->conn_info_min_age) {
253 hci_dev_unlock(hdev);
254 return -EINVAL;
255 }
256
257 hdev->conn_info_max_age = val;
258 hci_dev_unlock(hdev);
259
260 return 0;
261}
262
263static int conn_info_max_age_get(void *data, u64 *val)
264{
265 struct hci_dev *hdev = data;
266
267 hci_dev_lock(hdev);
268 *val = hdev->conn_info_max_age;
269 hci_dev_unlock(hdev);
270
271 return 0;
272}
273
274DEFINE_DEBUGFS_ATTRIBUTE(conn_info_max_age_fops, conn_info_max_age_get,
275 conn_info_max_age_set, "%llu\n");
276
277static ssize_t use_debug_keys_read(struct file *file, char __user *user_buf,
278 size_t count, loff_t *ppos)
279{
280 struct hci_dev *hdev = file->private_data;
281 char buf[3];
282
283 buf[0] = hci_dev_test_flag(hdev, HCI_USE_DEBUG_KEYS) ? 'Y' : 'N';
284 buf[1] = '\n';
285 buf[2] = '\0';
286 return simple_read_from_buffer(user_buf, count, ppos, buf, 2);
287}
288
289static const struct file_operations use_debug_keys_fops = {
290 .open = simple_open,
291 .read = use_debug_keys_read,
292 .llseek = default_llseek,
293};
294
295static ssize_t sc_only_mode_read(struct file *file, char __user *user_buf,
296 size_t count, loff_t *ppos)
297{
298 struct hci_dev *hdev = file->private_data;
299 char buf[3];
300
301 buf[0] = hci_dev_test_flag(hdev, HCI_SC_ONLY) ? 'Y' : 'N';
302 buf[1] = '\n';
303 buf[2] = '\0';
304 return simple_read_from_buffer(user_buf, count, ppos, buf, 2);
305}
306
307static const struct file_operations sc_only_mode_fops = {
308 .open = simple_open,
309 .read = sc_only_mode_read,
310 .llseek = default_llseek,
311};
312
313DEFINE_INFO_ATTRIBUTE(hardware_info, hw_info);
314DEFINE_INFO_ATTRIBUTE(firmware_info, fw_info);
315
316void hci_debugfs_create_common(struct hci_dev *hdev)
317{
318 debugfs_create_file("features", 0444, hdev->debugfs, hdev,
319 &features_fops);
320 debugfs_create_u16("manufacturer", 0444, hdev->debugfs,
321 &hdev->manufacturer);
322 debugfs_create_u8("hci_version", 0444, hdev->debugfs, &hdev->hci_ver);
323 debugfs_create_u16("hci_revision", 0444, hdev->debugfs, &hdev->hci_rev);
324 debugfs_create_u8("hardware_error", 0444, hdev->debugfs,
325 &hdev->hw_error_code);
326 debugfs_create_file("device_id", 0444, hdev->debugfs, hdev,
327 &device_id_fops);
328
329 debugfs_create_file("device_list", 0444, hdev->debugfs, hdev,
330 &device_list_fops);
331 debugfs_create_file("blacklist", 0444, hdev->debugfs, hdev,
332 &blacklist_fops);
333 debugfs_create_file("blocked_keys", 0444, hdev->debugfs, hdev,
334 &blocked_keys_fops);
335 debugfs_create_file("uuids", 0444, hdev->debugfs, hdev, &uuids_fops);
336 debugfs_create_file("remote_oob", 0400, hdev->debugfs, hdev,
337 &remote_oob_fops);
338
339 debugfs_create_file("conn_info_min_age", 0644, hdev->debugfs, hdev,
340 &conn_info_min_age_fops);
341 debugfs_create_file("conn_info_max_age", 0644, hdev->debugfs, hdev,
342 &conn_info_max_age_fops);
343
344 if (lmp_ssp_capable(hdev) || lmp_le_capable(hdev))
345 debugfs_create_file("use_debug_keys", 0444, hdev->debugfs,
346 hdev, &use_debug_keys_fops);
347
348 if (lmp_sc_capable(hdev) || lmp_le_capable(hdev))
349 debugfs_create_file("sc_only_mode", 0444, hdev->debugfs,
350 hdev, &sc_only_mode_fops);
351
352 if (hdev->hw_info)
353 debugfs_create_file("hardware_info", 0444, hdev->debugfs,
354 hdev, &hardware_info_fops);
355
356 if (hdev->fw_info)
357 debugfs_create_file("firmware_info", 0444, hdev->debugfs,
358 hdev, &firmware_info_fops);
359}
360
361static int inquiry_cache_show(struct seq_file *f, void *p)
362{
363 struct hci_dev *hdev = f->private;
364 struct discovery_state *cache = &hdev->discovery;
365 struct inquiry_entry *e;
366
367 hci_dev_lock(hdev);
368
369 list_for_each_entry(e, &cache->all, all) {
370 struct inquiry_data *data = &e->data;
371 seq_printf(f, "%pMR %d %d %d 0x%.2x%.2x%.2x 0x%.4x %d %d %u\n",
372 &data->bdaddr,
373 data->pscan_rep_mode, data->pscan_period_mode,
374 data->pscan_mode, data->dev_class[2],
375 data->dev_class[1], data->dev_class[0],
376 __le16_to_cpu(data->clock_offset),
377 data->rssi, data->ssp_mode, e->timestamp);
378 }
379
380 hci_dev_unlock(hdev);
381
382 return 0;
383}
384
385DEFINE_SHOW_ATTRIBUTE(inquiry_cache);
386
387static int link_keys_show(struct seq_file *f, void *ptr)
388{
389 struct hci_dev *hdev = f->private;
390 struct link_key *key;
391
392 rcu_read_lock();
393 list_for_each_entry_rcu(key, &hdev->link_keys, list)
394 seq_printf(f, "%pMR %u %*phN %u\n", &key->bdaddr, key->type,
395 HCI_LINK_KEY_SIZE, key->val, key->pin_len);
396 rcu_read_unlock();
397
398 return 0;
399}
400
401DEFINE_SHOW_ATTRIBUTE(link_keys);
402
403static int dev_class_show(struct seq_file *f, void *ptr)
404{
405 struct hci_dev *hdev = f->private;
406
407 hci_dev_lock(hdev);
408 seq_printf(f, "0x%.2x%.2x%.2x\n", hdev->dev_class[2],
409 hdev->dev_class[1], hdev->dev_class[0]);
410 hci_dev_unlock(hdev);
411
412 return 0;
413}
414
415DEFINE_SHOW_ATTRIBUTE(dev_class);
416
417static int voice_setting_get(void *data, u64 *val)
418{
419 struct hci_dev *hdev = data;
420
421 hci_dev_lock(hdev);
422 *val = hdev->voice_setting;
423 hci_dev_unlock(hdev);
424
425 return 0;
426}
427
428DEFINE_DEBUGFS_ATTRIBUTE(voice_setting_fops, voice_setting_get,
429 NULL, "0x%4.4llx\n");
430
431static ssize_t ssp_debug_mode_read(struct file *file, char __user *user_buf,
432 size_t count, loff_t *ppos)
433{
434 struct hci_dev *hdev = file->private_data;
435 char buf[3];
436
437 buf[0] = hdev->ssp_debug_mode ? 'Y' : 'N';
438 buf[1] = '\n';
439 buf[2] = '\0';
440 return simple_read_from_buffer(user_buf, count, ppos, buf, 2);
441}
442
443static const struct file_operations ssp_debug_mode_fops = {
444 .open = simple_open,
445 .read = ssp_debug_mode_read,
446 .llseek = default_llseek,
447};
448
449static int auto_accept_delay_set(void *data, u64 val)
450{
451 struct hci_dev *hdev = data;
452
453 hci_dev_lock(hdev);
454 hdev->auto_accept_delay = val;
455 hci_dev_unlock(hdev);
456
457 return 0;
458}
459
460static int min_encrypt_key_size_set(void *data, u64 val)
461{
462 struct hci_dev *hdev = data;
463
464 if (val < 1 || val > 16)
465 return -EINVAL;
466
467 hci_dev_lock(hdev);
468 hdev->min_enc_key_size = val;
469 hci_dev_unlock(hdev);
470
471 return 0;
472}
473
474static int min_encrypt_key_size_get(void *data, u64 *val)
475{
476 struct hci_dev *hdev = data;
477
478 hci_dev_lock(hdev);
479 *val = hdev->min_enc_key_size;
480 hci_dev_unlock(hdev);
481
482 return 0;
483}
484
485DEFINE_DEBUGFS_ATTRIBUTE(min_encrypt_key_size_fops,
486 min_encrypt_key_size_get,
487 min_encrypt_key_size_set, "%llu\n");
488
489static int auto_accept_delay_get(void *data, u64 *val)
490{
491 struct hci_dev *hdev = data;
492
493 hci_dev_lock(hdev);
494 *val = hdev->auto_accept_delay;
495 hci_dev_unlock(hdev);
496
497 return 0;
498}
499
500DEFINE_DEBUGFS_ATTRIBUTE(auto_accept_delay_fops, auto_accept_delay_get,
501 auto_accept_delay_set, "%llu\n");
502
503static ssize_t force_bredr_smp_read(struct file *file,
504 char __user *user_buf,
505 size_t count, loff_t *ppos)
506{
507 struct hci_dev *hdev = file->private_data;
508 char buf[3];
509
510 buf[0] = hci_dev_test_flag(hdev, HCI_FORCE_BREDR_SMP) ? 'Y' : 'N';
511 buf[1] = '\n';
512 buf[2] = '\0';
513 return simple_read_from_buffer(user_buf, count, ppos, buf, 2);
514}
515
516static ssize_t force_bredr_smp_write(struct file *file,
517 const char __user *user_buf,
518 size_t count, loff_t *ppos)
519{
520 struct hci_dev *hdev = file->private_data;
521 bool enable;
522 int err;
523
524 err = kstrtobool_from_user(user_buf, count, &enable);
525 if (err)
526 return err;
527
528 err = smp_force_bredr(hdev, enable);
529 if (err)
530 return err;
531
532 return count;
533}
534
535static const struct file_operations force_bredr_smp_fops = {
536 .open = simple_open,
537 .read = force_bredr_smp_read,
538 .write = force_bredr_smp_write,
539 .llseek = default_llseek,
540};
541
542static int idle_timeout_set(void *data, u64 val)
543{
544 struct hci_dev *hdev = data;
545
546 if (val != 0 && (val < 500 || val > 3600000))
547 return -EINVAL;
548
549 hci_dev_lock(hdev);
550 hdev->idle_timeout = val;
551 hci_dev_unlock(hdev);
552
553 return 0;
554}
555
556static int idle_timeout_get(void *data, u64 *val)
557{
558 struct hci_dev *hdev = data;
559
560 hci_dev_lock(hdev);
561 *val = hdev->idle_timeout;
562 hci_dev_unlock(hdev);
563
564 return 0;
565}
566
567DEFINE_DEBUGFS_ATTRIBUTE(idle_timeout_fops, idle_timeout_get,
568 idle_timeout_set, "%llu\n");
569
570static int sniff_min_interval_set(void *data, u64 val)
571{
572 struct hci_dev *hdev = data;
573
574 hci_dev_lock(hdev);
575 if (val == 0 || val % 2 || val > hdev->sniff_max_interval) {
576 hci_dev_unlock(hdev);
577 return -EINVAL;
578 }
579
580 hdev->sniff_min_interval = val;
581 hci_dev_unlock(hdev);
582
583 return 0;
584}
585
586static int sniff_min_interval_get(void *data, u64 *val)
587{
588 struct hci_dev *hdev = data;
589
590 hci_dev_lock(hdev);
591 *val = hdev->sniff_min_interval;
592 hci_dev_unlock(hdev);
593
594 return 0;
595}
596
597DEFINE_DEBUGFS_ATTRIBUTE(sniff_min_interval_fops, sniff_min_interval_get,
598 sniff_min_interval_set, "%llu\n");
599
600static int sniff_max_interval_set(void *data, u64 val)
601{
602 struct hci_dev *hdev = data;
603
604 hci_dev_lock(hdev);
605 if (val == 0 || val % 2 || val < hdev->sniff_min_interval) {
606 hci_dev_unlock(hdev);
607 return -EINVAL;
608 }
609
610 hdev->sniff_max_interval = val;
611 hci_dev_unlock(hdev);
612
613 return 0;
614}
615
616static int sniff_max_interval_get(void *data, u64 *val)
617{
618 struct hci_dev *hdev = data;
619
620 hci_dev_lock(hdev);
621 *val = hdev->sniff_max_interval;
622 hci_dev_unlock(hdev);
623
624 return 0;
625}
626
627DEFINE_DEBUGFS_ATTRIBUTE(sniff_max_interval_fops, sniff_max_interval_get,
628 sniff_max_interval_set, "%llu\n");
629
630void hci_debugfs_create_bredr(struct hci_dev *hdev)
631{
632 debugfs_create_file("inquiry_cache", 0444, hdev->debugfs, hdev,
633 &inquiry_cache_fops);
634 debugfs_create_file("link_keys", 0400, hdev->debugfs, hdev,
635 &link_keys_fops);
636 debugfs_create_file("dev_class", 0444, hdev->debugfs, hdev,
637 &dev_class_fops);
638 debugfs_create_file("voice_setting", 0444, hdev->debugfs, hdev,
639 &voice_setting_fops);
640
641 /* If the controller does not support BR/EDR Secure Connections
642 * feature, then the BR/EDR SMP channel shall not be present.
643 *
644 * To test this with Bluetooth 4.0 controllers, create a debugfs
645 * switch that allows forcing BR/EDR SMP support and accepting
646 * cross-transport pairing on non-AES encrypted connections.
647 */
648 if (!lmp_sc_capable(hdev))
649 debugfs_create_file("force_bredr_smp", 0644, hdev->debugfs,
650 hdev, &force_bredr_smp_fops);
651
652 if (lmp_ssp_capable(hdev)) {
653 debugfs_create_file("ssp_debug_mode", 0444, hdev->debugfs,
654 hdev, &ssp_debug_mode_fops);
655 debugfs_create_file("min_encrypt_key_size", 0644, hdev->debugfs,
656 hdev, &min_encrypt_key_size_fops);
657 debugfs_create_file("auto_accept_delay", 0644, hdev->debugfs,
658 hdev, &auto_accept_delay_fops);
659 }
660
661 if (lmp_sniff_capable(hdev)) {
662 debugfs_create_file("idle_timeout", 0644, hdev->debugfs,
663 hdev, &idle_timeout_fops);
664 debugfs_create_file("sniff_min_interval", 0644, hdev->debugfs,
665 hdev, &sniff_min_interval_fops);
666 debugfs_create_file("sniff_max_interval", 0644, hdev->debugfs,
667 hdev, &sniff_max_interval_fops);
668 }
669}
670
671static int identity_show(struct seq_file *f, void *p)
672{
673 struct hci_dev *hdev = f->private;
674 bdaddr_t addr;
675 u8 addr_type;
676
677 hci_dev_lock(hdev);
678
679 hci_copy_identity_address(hdev, &addr, &addr_type);
680
681 seq_printf(f, "%pMR (type %u) %*phN %pMR\n", &addr, addr_type,
682 16, hdev->irk, &hdev->rpa);
683
684 hci_dev_unlock(hdev);
685
686 return 0;
687}
688
689DEFINE_SHOW_ATTRIBUTE(identity);
690
691static int rpa_timeout_set(void *data, u64 val)
692{
693 struct hci_dev *hdev = data;
694
695 /* Require the RPA timeout to be at least 30 seconds and at most
696 * 24 hours.
697 */
698 if (val < 30 || val > (60 * 60 * 24))
699 return -EINVAL;
700
701 hci_dev_lock(hdev);
702 hdev->rpa_timeout = val;
703 hci_dev_unlock(hdev);
704
705 return 0;
706}
707
708static int rpa_timeout_get(void *data, u64 *val)
709{
710 struct hci_dev *hdev = data;
711
712 hci_dev_lock(hdev);
713 *val = hdev->rpa_timeout;
714 hci_dev_unlock(hdev);
715
716 return 0;
717}
718
719DEFINE_DEBUGFS_ATTRIBUTE(rpa_timeout_fops, rpa_timeout_get,
720 rpa_timeout_set, "%llu\n");
721
722static int random_address_show(struct seq_file *f, void *p)
723{
724 struct hci_dev *hdev = f->private;
725
726 hci_dev_lock(hdev);
727 seq_printf(f, "%pMR\n", &hdev->random_addr);
728 hci_dev_unlock(hdev);
729
730 return 0;
731}
732
733DEFINE_SHOW_ATTRIBUTE(random_address);
734
735static int static_address_show(struct seq_file *f, void *p)
736{
737 struct hci_dev *hdev = f->private;
738
739 hci_dev_lock(hdev);
740 seq_printf(f, "%pMR\n", &hdev->static_addr);
741 hci_dev_unlock(hdev);
742
743 return 0;
744}
745
746DEFINE_SHOW_ATTRIBUTE(static_address);
747
748static ssize_t force_static_address_read(struct file *file,
749 char __user *user_buf,
750 size_t count, loff_t *ppos)
751{
752 struct hci_dev *hdev = file->private_data;
753 char buf[3];
754
755 buf[0] = hci_dev_test_flag(hdev, HCI_FORCE_STATIC_ADDR) ? 'Y' : 'N';
756 buf[1] = '\n';
757 buf[2] = '\0';
758 return simple_read_from_buffer(user_buf, count, ppos, buf, 2);
759}
760
761static ssize_t force_static_address_write(struct file *file,
762 const char __user *user_buf,
763 size_t count, loff_t *ppos)
764{
765 struct hci_dev *hdev = file->private_data;
766 bool enable;
767 int err;
768
769 if (hdev_is_powered(hdev))
770 return -EBUSY;
771
772 err = kstrtobool_from_user(user_buf, count, &enable);
773 if (err)
774 return err;
775
776 if (enable == hci_dev_test_flag(hdev, HCI_FORCE_STATIC_ADDR))
777 return -EALREADY;
778
779 hci_dev_change_flag(hdev, HCI_FORCE_STATIC_ADDR);
780
781 return count;
782}
783
784static const struct file_operations force_static_address_fops = {
785 .open = simple_open,
786 .read = force_static_address_read,
787 .write = force_static_address_write,
788 .llseek = default_llseek,
789};
790
791static int white_list_show(struct seq_file *f, void *ptr)
792{
793 struct hci_dev *hdev = f->private;
794 struct bdaddr_list *b;
795
796 hci_dev_lock(hdev);
797 list_for_each_entry(b, &hdev->le_accept_list, list)
798 seq_printf(f, "%pMR (type %u)\n", &b->bdaddr, b->bdaddr_type);
799 hci_dev_unlock(hdev);
800
801 return 0;
802}
803
804DEFINE_SHOW_ATTRIBUTE(white_list);
805
806static int resolv_list_show(struct seq_file *f, void *ptr)
807{
808 struct hci_dev *hdev = f->private;
809 struct bdaddr_list *b;
810
811 hci_dev_lock(hdev);
812 list_for_each_entry(b, &hdev->le_resolv_list, list)
813 seq_printf(f, "%pMR (type %u)\n", &b->bdaddr, b->bdaddr_type);
814 hci_dev_unlock(hdev);
815
816 return 0;
817}
818
819DEFINE_SHOW_ATTRIBUTE(resolv_list);
820
821static int identity_resolving_keys_show(struct seq_file *f, void *ptr)
822{
823 struct hci_dev *hdev = f->private;
824 struct smp_irk *irk;
825
826 rcu_read_lock();
827 list_for_each_entry_rcu(irk, &hdev->identity_resolving_keys, list) {
828 seq_printf(f, "%pMR (type %u) %*phN %pMR\n",
829 &irk->bdaddr, irk->addr_type,
830 16, irk->val, &irk->rpa);
831 }
832 rcu_read_unlock();
833
834 return 0;
835}
836
837DEFINE_SHOW_ATTRIBUTE(identity_resolving_keys);
838
839static int long_term_keys_show(struct seq_file *f, void *ptr)
840{
841 struct hci_dev *hdev = f->private;
842 struct smp_ltk *ltk;
843
844 rcu_read_lock();
845 list_for_each_entry_rcu(ltk, &hdev->long_term_keys, list)
846 seq_printf(f, "%pMR (type %u) %u 0x%02x %u %.4x %.16llx %*phN\n",
847 <k->bdaddr, ltk->bdaddr_type, ltk->authenticated,
848 ltk->type, ltk->enc_size, __le16_to_cpu(ltk->ediv),
849 __le64_to_cpu(ltk->rand), 16, ltk->val);
850 rcu_read_unlock();
851
852 return 0;
853}
854
855DEFINE_SHOW_ATTRIBUTE(long_term_keys);
856
857static int conn_min_interval_set(void *data, u64 val)
858{
859 struct hci_dev *hdev = data;
860
861 hci_dev_lock(hdev);
862 if (val < 0x0006 || val > 0x0c80 || val > hdev->le_conn_max_interval) {
863 hci_dev_unlock(hdev);
864 return -EINVAL;
865 }
866
867 hdev->le_conn_min_interval = val;
868 hci_dev_unlock(hdev);
869
870 return 0;
871}
872
873static int conn_min_interval_get(void *data, u64 *val)
874{
875 struct hci_dev *hdev = data;
876
877 hci_dev_lock(hdev);
878 *val = hdev->le_conn_min_interval;
879 hci_dev_unlock(hdev);
880
881 return 0;
882}
883
884DEFINE_DEBUGFS_ATTRIBUTE(conn_min_interval_fops, conn_min_interval_get,
885 conn_min_interval_set, "%llu\n");
886
887static int conn_max_interval_set(void *data, u64 val)
888{
889 struct hci_dev *hdev = data;
890
891 hci_dev_lock(hdev);
892 if (val < 0x0006 || val > 0x0c80 || val < hdev->le_conn_min_interval) {
893 hci_dev_unlock(hdev);
894 return -EINVAL;
895 }
896
897 hdev->le_conn_max_interval = val;
898 hci_dev_unlock(hdev);
899
900 return 0;
901}
902
903static int conn_max_interval_get(void *data, u64 *val)
904{
905 struct hci_dev *hdev = data;
906
907 hci_dev_lock(hdev);
908 *val = hdev->le_conn_max_interval;
909 hci_dev_unlock(hdev);
910
911 return 0;
912}
913
914DEFINE_DEBUGFS_ATTRIBUTE(conn_max_interval_fops, conn_max_interval_get,
915 conn_max_interval_set, "%llu\n");
916
917static int conn_latency_set(void *data, u64 val)
918{
919 struct hci_dev *hdev = data;
920
921 if (val > 0x01f3)
922 return -EINVAL;
923
924 hci_dev_lock(hdev);
925 hdev->le_conn_latency = val;
926 hci_dev_unlock(hdev);
927
928 return 0;
929}
930
931static int conn_latency_get(void *data, u64 *val)
932{
933 struct hci_dev *hdev = data;
934
935 hci_dev_lock(hdev);
936 *val = hdev->le_conn_latency;
937 hci_dev_unlock(hdev);
938
939 return 0;
940}
941
942DEFINE_DEBUGFS_ATTRIBUTE(conn_latency_fops, conn_latency_get,
943 conn_latency_set, "%llu\n");
944
945static int supervision_timeout_set(void *data, u64 val)
946{
947 struct hci_dev *hdev = data;
948
949 if (val < 0x000a || val > 0x0c80)
950 return -EINVAL;
951
952 hci_dev_lock(hdev);
953 hdev->le_supv_timeout = val;
954 hci_dev_unlock(hdev);
955
956 return 0;
957}
958
959static int supervision_timeout_get(void *data, u64 *val)
960{
961 struct hci_dev *hdev = data;
962
963 hci_dev_lock(hdev);
964 *val = hdev->le_supv_timeout;
965 hci_dev_unlock(hdev);
966
967 return 0;
968}
969
970DEFINE_DEBUGFS_ATTRIBUTE(supervision_timeout_fops, supervision_timeout_get,
971 supervision_timeout_set, "%llu\n");
972
973static int adv_channel_map_set(void *data, u64 val)
974{
975 struct hci_dev *hdev = data;
976
977 if (val < 0x01 || val > 0x07)
978 return -EINVAL;
979
980 hci_dev_lock(hdev);
981 hdev->le_adv_channel_map = val;
982 hci_dev_unlock(hdev);
983
984 return 0;
985}
986
987static int adv_channel_map_get(void *data, u64 *val)
988{
989 struct hci_dev *hdev = data;
990
991 hci_dev_lock(hdev);
992 *val = hdev->le_adv_channel_map;
993 hci_dev_unlock(hdev);
994
995 return 0;
996}
997
998DEFINE_DEBUGFS_ATTRIBUTE(adv_channel_map_fops, adv_channel_map_get,
999 adv_channel_map_set, "%llu\n");
1000
1001static int adv_min_interval_set(void *data, u64 val)
1002{
1003 struct hci_dev *hdev = data;
1004
1005 hci_dev_lock(hdev);
1006 if (val < 0x0020 || val > 0x4000 || val > hdev->le_adv_max_interval) {
1007 hci_dev_unlock(hdev);
1008 return -EINVAL;
1009 }
1010
1011 hdev->le_adv_min_interval = val;
1012 hci_dev_unlock(hdev);
1013
1014 return 0;
1015}
1016
1017static int adv_min_interval_get(void *data, u64 *val)
1018{
1019 struct hci_dev *hdev = data;
1020
1021 hci_dev_lock(hdev);
1022 *val = hdev->le_adv_min_interval;
1023 hci_dev_unlock(hdev);
1024
1025 return 0;
1026}
1027
1028DEFINE_DEBUGFS_ATTRIBUTE(adv_min_interval_fops, adv_min_interval_get,
1029 adv_min_interval_set, "%llu\n");
1030
1031static int adv_max_interval_set(void *data, u64 val)
1032{
1033 struct hci_dev *hdev = data;
1034
1035 hci_dev_lock(hdev);
1036 if (val < 0x0020 || val > 0x4000 || val < hdev->le_adv_min_interval) {
1037 hci_dev_unlock(hdev);
1038 return -EINVAL;
1039 }
1040
1041 hdev->le_adv_max_interval = val;
1042 hci_dev_unlock(hdev);
1043
1044 return 0;
1045}
1046
1047static int adv_max_interval_get(void *data, u64 *val)
1048{
1049 struct hci_dev *hdev = data;
1050
1051 hci_dev_lock(hdev);
1052 *val = hdev->le_adv_max_interval;
1053 hci_dev_unlock(hdev);
1054
1055 return 0;
1056}
1057
1058DEFINE_DEBUGFS_ATTRIBUTE(adv_max_interval_fops, adv_max_interval_get,
1059 adv_max_interval_set, "%llu\n");
1060
1061static int min_key_size_set(void *data, u64 val)
1062{
1063 struct hci_dev *hdev = data;
1064
1065 hci_dev_lock(hdev);
1066 if (val > hdev->le_max_key_size || val < SMP_MIN_ENC_KEY_SIZE) {
1067 hci_dev_unlock(hdev);
1068 return -EINVAL;
1069 }
1070
1071 hdev->le_min_key_size = val;
1072 hci_dev_unlock(hdev);
1073
1074 return 0;
1075}
1076
1077static int min_key_size_get(void *data, u64 *val)
1078{
1079 struct hci_dev *hdev = data;
1080
1081 hci_dev_lock(hdev);
1082 *val = hdev->le_min_key_size;
1083 hci_dev_unlock(hdev);
1084
1085 return 0;
1086}
1087
1088DEFINE_DEBUGFS_ATTRIBUTE(min_key_size_fops, min_key_size_get,
1089 min_key_size_set, "%llu\n");
1090
1091static int max_key_size_set(void *data, u64 val)
1092{
1093 struct hci_dev *hdev = data;
1094
1095 hci_dev_lock(hdev);
1096 if (val > SMP_MAX_ENC_KEY_SIZE || val < hdev->le_min_key_size) {
1097 hci_dev_unlock(hdev);
1098 return -EINVAL;
1099 }
1100
1101 hdev->le_max_key_size = val;
1102 hci_dev_unlock(hdev);
1103
1104 return 0;
1105}
1106
1107static int max_key_size_get(void *data, u64 *val)
1108{
1109 struct hci_dev *hdev = data;
1110
1111 hci_dev_lock(hdev);
1112 *val = hdev->le_max_key_size;
1113 hci_dev_unlock(hdev);
1114
1115 return 0;
1116}
1117
1118DEFINE_DEBUGFS_ATTRIBUTE(max_key_size_fops, max_key_size_get,
1119 max_key_size_set, "%llu\n");
1120
1121static int auth_payload_timeout_set(void *data, u64 val)
1122{
1123 struct hci_dev *hdev = data;
1124
1125 if (val < 0x0001 || val > 0xffff)
1126 return -EINVAL;
1127
1128 hci_dev_lock(hdev);
1129 hdev->auth_payload_timeout = val;
1130 hci_dev_unlock(hdev);
1131
1132 return 0;
1133}
1134
1135static int auth_payload_timeout_get(void *data, u64 *val)
1136{
1137 struct hci_dev *hdev = data;
1138
1139 hci_dev_lock(hdev);
1140 *val = hdev->auth_payload_timeout;
1141 hci_dev_unlock(hdev);
1142
1143 return 0;
1144}
1145
1146DEFINE_DEBUGFS_ATTRIBUTE(auth_payload_timeout_fops,
1147 auth_payload_timeout_get,
1148 auth_payload_timeout_set, "%llu\n");
1149
1150static ssize_t force_no_mitm_read(struct file *file,
1151 char __user *user_buf,
1152 size_t count, loff_t *ppos)
1153{
1154 struct hci_dev *hdev = file->private_data;
1155 char buf[3];
1156
1157 buf[0] = hci_dev_test_flag(hdev, HCI_FORCE_NO_MITM) ? 'Y' : 'N';
1158 buf[1] = '\n';
1159 buf[2] = '\0';
1160 return simple_read_from_buffer(user_buf, count, ppos, buf, 2);
1161}
1162
1163static ssize_t force_no_mitm_write(struct file *file,
1164 const char __user *user_buf,
1165 size_t count, loff_t *ppos)
1166{
1167 struct hci_dev *hdev = file->private_data;
1168 char buf[32];
1169 size_t buf_size = min(count, (sizeof(buf) - 1));
1170 bool enable;
1171
1172 if (copy_from_user(buf, user_buf, buf_size))
1173 return -EFAULT;
1174
1175 buf[buf_size] = '\0';
1176 if (kstrtobool(buf, &enable))
1177 return -EINVAL;
1178
1179 if (enable == hci_dev_test_flag(hdev, HCI_FORCE_NO_MITM))
1180 return -EALREADY;
1181
1182 hci_dev_change_flag(hdev, HCI_FORCE_NO_MITM);
1183
1184 return count;
1185}
1186
1187static const struct file_operations force_no_mitm_fops = {
1188 .open = simple_open,
1189 .read = force_no_mitm_read,
1190 .write = force_no_mitm_write,
1191 .llseek = default_llseek,
1192};
1193
1194DEFINE_QUIRK_ATTRIBUTE(quirk_strict_duplicate_filter,
1195 HCI_QUIRK_STRICT_DUPLICATE_FILTER);
1196DEFINE_QUIRK_ATTRIBUTE(quirk_simultaneous_discovery,
1197 HCI_QUIRK_SIMULTANEOUS_DISCOVERY);
1198
1199void hci_debugfs_create_le(struct hci_dev *hdev)
1200{
1201 debugfs_create_file("identity", 0400, hdev->debugfs, hdev,
1202 &identity_fops);
1203 debugfs_create_file("rpa_timeout", 0644, hdev->debugfs, hdev,
1204 &rpa_timeout_fops);
1205 debugfs_create_file("random_address", 0444, hdev->debugfs, hdev,
1206 &random_address_fops);
1207 debugfs_create_file("static_address", 0444, hdev->debugfs, hdev,
1208 &static_address_fops);
1209
1210 /* For controllers with a public address, provide a debug
1211 * option to force the usage of the configured static
1212 * address. By default the public address is used.
1213 */
1214 if (bacmp(&hdev->bdaddr, BDADDR_ANY))
1215 debugfs_create_file("force_static_address", 0644,
1216 hdev->debugfs, hdev,
1217 &force_static_address_fops);
1218
1219 debugfs_create_u8("white_list_size", 0444, hdev->debugfs,
1220 &hdev->le_accept_list_size);
1221 debugfs_create_file("white_list", 0444, hdev->debugfs, hdev,
1222 &white_list_fops);
1223 debugfs_create_u8("resolv_list_size", 0444, hdev->debugfs,
1224 &hdev->le_resolv_list_size);
1225 debugfs_create_file("resolv_list", 0444, hdev->debugfs, hdev,
1226 &resolv_list_fops);
1227 debugfs_create_file("identity_resolving_keys", 0400, hdev->debugfs,
1228 hdev, &identity_resolving_keys_fops);
1229 debugfs_create_file("long_term_keys", 0400, hdev->debugfs, hdev,
1230 &long_term_keys_fops);
1231 debugfs_create_file("conn_min_interval", 0644, hdev->debugfs, hdev,
1232 &conn_min_interval_fops);
1233 debugfs_create_file("conn_max_interval", 0644, hdev->debugfs, hdev,
1234 &conn_max_interval_fops);
1235 debugfs_create_file("conn_latency", 0644, hdev->debugfs, hdev,
1236 &conn_latency_fops);
1237 debugfs_create_file("supervision_timeout", 0644, hdev->debugfs, hdev,
1238 &supervision_timeout_fops);
1239 debugfs_create_file("adv_channel_map", 0644, hdev->debugfs, hdev,
1240 &adv_channel_map_fops);
1241 debugfs_create_file("adv_min_interval", 0644, hdev->debugfs, hdev,
1242 &adv_min_interval_fops);
1243 debugfs_create_file("adv_max_interval", 0644, hdev->debugfs, hdev,
1244 &adv_max_interval_fops);
1245 debugfs_create_u16("discov_interleaved_timeout", 0644, hdev->debugfs,
1246 &hdev->discov_interleaved_timeout);
1247 debugfs_create_file("min_key_size", 0644, hdev->debugfs, hdev,
1248 &min_key_size_fops);
1249 debugfs_create_file("max_key_size", 0644, hdev->debugfs, hdev,
1250 &max_key_size_fops);
1251 debugfs_create_file("auth_payload_timeout", 0644, hdev->debugfs, hdev,
1252 &auth_payload_timeout_fops);
1253 debugfs_create_file("force_no_mitm", 0644, hdev->debugfs, hdev,
1254 &force_no_mitm_fops);
1255
1256 debugfs_create_file("quirk_strict_duplicate_filter", 0644,
1257 hdev->debugfs, hdev,
1258 &quirk_strict_duplicate_filter_fops);
1259 debugfs_create_file("quirk_simultaneous_discovery", 0644,
1260 hdev->debugfs, hdev,
1261 &quirk_simultaneous_discovery_fops);
1262}
1263
1264void hci_debugfs_create_conn(struct hci_conn *conn)
1265{
1266 struct hci_dev *hdev = conn->hdev;
1267 char name[6];
1268
1269 if (IS_ERR_OR_NULL(hdev->debugfs) || conn->debugfs)
1270 return;
1271
1272 snprintf(name, sizeof(name), "%u", conn->handle);
1273 conn->debugfs = debugfs_create_dir(name, hdev->debugfs);
1274}
1275
1276static ssize_t dut_mode_read(struct file *file, char __user *user_buf,
1277 size_t count, loff_t *ppos)
1278{
1279 struct hci_dev *hdev = file->private_data;
1280 char buf[3];
1281
1282 buf[0] = hci_dev_test_flag(hdev, HCI_DUT_MODE) ? 'Y' : 'N';
1283 buf[1] = '\n';
1284 buf[2] = '\0';
1285 return simple_read_from_buffer(user_buf, count, ppos, buf, 2);
1286}
1287
1288static ssize_t dut_mode_write(struct file *file, const char __user *user_buf,
1289 size_t count, loff_t *ppos)
1290{
1291 struct hci_dev *hdev = file->private_data;
1292 struct sk_buff *skb;
1293 bool enable;
1294 int err;
1295
1296 if (!test_bit(HCI_UP, &hdev->flags))
1297 return -ENETDOWN;
1298
1299 err = kstrtobool_from_user(user_buf, count, &enable);
1300 if (err)
1301 return err;
1302
1303 if (enable == hci_dev_test_flag(hdev, HCI_DUT_MODE))
1304 return -EALREADY;
1305
1306 hci_req_sync_lock(hdev);
1307 if (enable)
1308 skb = __hci_cmd_sync(hdev, HCI_OP_ENABLE_DUT_MODE, 0, NULL,
1309 HCI_CMD_TIMEOUT);
1310 else
1311 skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL,
1312 HCI_CMD_TIMEOUT);
1313 hci_req_sync_unlock(hdev);
1314
1315 if (IS_ERR(skb))
1316 return PTR_ERR(skb);
1317
1318 kfree_skb(skb);
1319
1320 hci_dev_change_flag(hdev, HCI_DUT_MODE);
1321
1322 return count;
1323}
1324
1325static const struct file_operations dut_mode_fops = {
1326 .open = simple_open,
1327 .read = dut_mode_read,
1328 .write = dut_mode_write,
1329 .llseek = default_llseek,
1330};
1331
1332static ssize_t vendor_diag_read(struct file *file, char __user *user_buf,
1333 size_t count, loff_t *ppos)
1334{
1335 struct hci_dev *hdev = file->private_data;
1336 char buf[3];
1337
1338 buf[0] = hci_dev_test_flag(hdev, HCI_VENDOR_DIAG) ? 'Y' : 'N';
1339 buf[1] = '\n';
1340 buf[2] = '\0';
1341 return simple_read_from_buffer(user_buf, count, ppos, buf, 2);
1342}
1343
1344static ssize_t vendor_diag_write(struct file *file, const char __user *user_buf,
1345 size_t count, loff_t *ppos)
1346{
1347 struct hci_dev *hdev = file->private_data;
1348 bool enable;
1349 int err;
1350
1351 err = kstrtobool_from_user(user_buf, count, &enable);
1352 if (err)
1353 return err;
1354
1355 /* When the diagnostic flags are not persistent and the transport
1356 * is not active or in user channel operation, then there is no need
1357 * for the vendor callback. Instead just store the desired value and
1358 * the setting will be programmed when the controller gets powered on.
1359 */
1360 if (test_bit(HCI_QUIRK_NON_PERSISTENT_DIAG, &hdev->quirks) &&
1361 (!test_bit(HCI_RUNNING, &hdev->flags) ||
1362 hci_dev_test_flag(hdev, HCI_USER_CHANNEL)))
1363 goto done;
1364
1365 hci_req_sync_lock(hdev);
1366 err = hdev->set_diag(hdev, enable);
1367 hci_req_sync_unlock(hdev);
1368
1369 if (err < 0)
1370 return err;
1371
1372done:
1373 if (enable)
1374 hci_dev_set_flag(hdev, HCI_VENDOR_DIAG);
1375 else
1376 hci_dev_clear_flag(hdev, HCI_VENDOR_DIAG);
1377
1378 return count;
1379}
1380
1381static const struct file_operations vendor_diag_fops = {
1382 .open = simple_open,
1383 .read = vendor_diag_read,
1384 .write = vendor_diag_write,
1385 .llseek = default_llseek,
1386};
1387
1388void hci_debugfs_create_basic(struct hci_dev *hdev)
1389{
1390 debugfs_create_file("dut_mode", 0644, hdev->debugfs, hdev,
1391 &dut_mode_fops);
1392
1393 if (hdev->set_diag)
1394 debugfs_create_file("vendor_diag", 0644, hdev->debugfs, hdev,
1395 &vendor_diag_fops);
1396}