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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
26#include <net/bluetooth/bluetooth.h>
27#include <net/bluetooth/hci_core.h>
28
29#include "smp.h"
30#include "hci_request.h"
31#include "hci_debugfs.h"
32
33#define DEFINE_QUIRK_ATTRIBUTE(__name, __quirk) \
34static ssize_t __name ## _read(struct file *file, \
35 char __user *user_buf, \
36 size_t count, loff_t *ppos) \
37{ \
38 struct hci_dev *hdev = file->private_data; \
39 char buf[3]; \
40 \
41 buf[0] = test_bit(__quirk, &hdev->quirks) ? 'Y' : 'N'; \
42 buf[1] = '\n'; \
43 buf[2] = '\0'; \
44 return simple_read_from_buffer(user_buf, count, ppos, buf, 2); \
45} \
46 \
47static ssize_t __name ## _write(struct file *file, \
48 const char __user *user_buf, \
49 size_t count, loff_t *ppos) \
50{ \
51 struct hci_dev *hdev = file->private_data; \
52 bool enable; \
53 int err; \
54 \
55 if (test_bit(HCI_UP, &hdev->flags)) \
56 return -EBUSY; \
57 \
58 err = kstrtobool_from_user(user_buf, count, &enable); \
59 if (err) \
60 return err; \
61 \
62 if (enable == test_bit(__quirk, &hdev->quirks)) \
63 return -EALREADY; \
64 \
65 change_bit(__quirk, &hdev->quirks); \
66 \
67 return count; \
68} \
69 \
70static const struct file_operations __name ## _fops = { \
71 .open = simple_open, \
72 .read = __name ## _read, \
73 .write = __name ## _write, \
74 .llseek = default_llseek, \
75} \
76
77#define DEFINE_INFO_ATTRIBUTE(__name, __field) \
78static int __name ## _show(struct seq_file *f, void *ptr) \
79{ \
80 struct hci_dev *hdev = f->private; \
81 \
82 hci_dev_lock(hdev); \
83 seq_printf(f, "%s\n", hdev->__field ? : ""); \
84 hci_dev_unlock(hdev); \
85 \
86 return 0; \
87} \
88 \
89DEFINE_SHOW_ATTRIBUTE(__name)
90
91static int features_show(struct seq_file *f, void *ptr)
92{
93 struct hci_dev *hdev = f->private;
94 u8 p;
95
96 hci_dev_lock(hdev);
97 for (p = 0; p < HCI_MAX_PAGES && p <= hdev->max_page; p++)
98 seq_printf(f, "%2u: %8ph\n", p, hdev->features[p]);
99 if (lmp_le_capable(hdev))
100 seq_printf(f, "LE: %8ph\n", hdev->le_features);
101 hci_dev_unlock(hdev);
102
103 return 0;
104}
105
106DEFINE_SHOW_ATTRIBUTE(features);
107
108static int device_id_show(struct seq_file *f, void *ptr)
109{
110 struct hci_dev *hdev = f->private;
111
112 hci_dev_lock(hdev);
113 seq_printf(f, "%4.4x:%4.4x:%4.4x:%4.4x\n", hdev->devid_source,
114 hdev->devid_vendor, hdev->devid_product, hdev->devid_version);
115 hci_dev_unlock(hdev);
116
117 return 0;
118}
119
120DEFINE_SHOW_ATTRIBUTE(device_id);
121
122static int device_list_show(struct seq_file *f, void *ptr)
123{
124 struct hci_dev *hdev = f->private;
125 struct hci_conn_params *p;
126 struct bdaddr_list *b;
127
128 hci_dev_lock(hdev);
129 list_for_each_entry(b, &hdev->accept_list, list)
130 seq_printf(f, "%pMR (type %u)\n", &b->bdaddr, b->bdaddr_type);
131 list_for_each_entry(p, &hdev->le_conn_params, list) {
132 seq_printf(f, "%pMR (type %u) %u\n", &p->addr, p->addr_type,
133 p->auto_connect);
134 }
135 hci_dev_unlock(hdev);
136
137 return 0;
138}
139
140DEFINE_SHOW_ATTRIBUTE(device_list);
141
142static int blacklist_show(struct seq_file *f, void *p)
143{
144 struct hci_dev *hdev = f->private;
145 struct bdaddr_list *b;
146
147 hci_dev_lock(hdev);
148 list_for_each_entry(b, &hdev->reject_list, list)
149 seq_printf(f, "%pMR (type %u)\n", &b->bdaddr, b->bdaddr_type);
150 hci_dev_unlock(hdev);
151
152 return 0;
153}
154
155DEFINE_SHOW_ATTRIBUTE(blacklist);
156
157static int blocked_keys_show(struct seq_file *f, void *p)
158{
159 struct hci_dev *hdev = f->private;
160 struct blocked_key *key;
161
162 rcu_read_lock();
163 list_for_each_entry_rcu(key, &hdev->blocked_keys, list)
164 seq_printf(f, "%u %*phN\n", key->type, 16, key->val);
165 rcu_read_unlock();
166
167 return 0;
168}
169
170DEFINE_SHOW_ATTRIBUTE(blocked_keys);
171
172static int uuids_show(struct seq_file *f, void *p)
173{
174 struct hci_dev *hdev = f->private;
175 struct bt_uuid *uuid;
176
177 hci_dev_lock(hdev);
178 list_for_each_entry(uuid, &hdev->uuids, list) {
179 u8 i, val[16];
180
181 /* The Bluetooth UUID values are stored in big endian,
182 * but with reversed byte order. So convert them into
183 * the right order for the %pUb modifier.
184 */
185 for (i = 0; i < 16; i++)
186 val[i] = uuid->uuid[15 - i];
187
188 seq_printf(f, "%pUb\n", val);
189 }
190 hci_dev_unlock(hdev);
191
192 return 0;
193}
194
195DEFINE_SHOW_ATTRIBUTE(uuids);
196
197static int remote_oob_show(struct seq_file *f, void *ptr)
198{
199 struct hci_dev *hdev = f->private;
200 struct oob_data *data;
201
202 hci_dev_lock(hdev);
203 list_for_each_entry(data, &hdev->remote_oob_data, list) {
204 seq_printf(f, "%pMR (type %u) %u %*phN %*phN %*phN %*phN\n",
205 &data->bdaddr, data->bdaddr_type, data->present,
206 16, data->hash192, 16, data->rand192,
207 16, data->hash256, 16, data->rand256);
208 }
209 hci_dev_unlock(hdev);
210
211 return 0;
212}
213
214DEFINE_SHOW_ATTRIBUTE(remote_oob);
215
216static int conn_info_min_age_set(void *data, u64 val)
217{
218 struct hci_dev *hdev = data;
219
220 if (val == 0 || val > hdev->conn_info_max_age)
221 return -EINVAL;
222
223 hci_dev_lock(hdev);
224 hdev->conn_info_min_age = val;
225 hci_dev_unlock(hdev);
226
227 return 0;
228}
229
230static int conn_info_min_age_get(void *data, u64 *val)
231{
232 struct hci_dev *hdev = data;
233
234 hci_dev_lock(hdev);
235 *val = hdev->conn_info_min_age;
236 hci_dev_unlock(hdev);
237
238 return 0;
239}
240
241DEFINE_DEBUGFS_ATTRIBUTE(conn_info_min_age_fops, conn_info_min_age_get,
242 conn_info_min_age_set, "%llu\n");
243
244static int conn_info_max_age_set(void *data, u64 val)
245{
246 struct hci_dev *hdev = data;
247
248 if (val == 0 || val < hdev->conn_info_min_age)
249 return -EINVAL;
250
251 hci_dev_lock(hdev);
252 hdev->conn_info_max_age = val;
253 hci_dev_unlock(hdev);
254
255 return 0;
256}
257
258static int conn_info_max_age_get(void *data, u64 *val)
259{
260 struct hci_dev *hdev = data;
261
262 hci_dev_lock(hdev);
263 *val = hdev->conn_info_max_age;
264 hci_dev_unlock(hdev);
265
266 return 0;
267}
268
269DEFINE_DEBUGFS_ATTRIBUTE(conn_info_max_age_fops, conn_info_max_age_get,
270 conn_info_max_age_set, "%llu\n");
271
272static ssize_t use_debug_keys_read(struct file *file, char __user *user_buf,
273 size_t count, loff_t *ppos)
274{
275 struct hci_dev *hdev = file->private_data;
276 char buf[3];
277
278 buf[0] = hci_dev_test_flag(hdev, HCI_USE_DEBUG_KEYS) ? 'Y' : 'N';
279 buf[1] = '\n';
280 buf[2] = '\0';
281 return simple_read_from_buffer(user_buf, count, ppos, buf, 2);
282}
283
284static const struct file_operations use_debug_keys_fops = {
285 .open = simple_open,
286 .read = use_debug_keys_read,
287 .llseek = default_llseek,
288};
289
290static ssize_t sc_only_mode_read(struct file *file, char __user *user_buf,
291 size_t count, loff_t *ppos)
292{
293 struct hci_dev *hdev = file->private_data;
294 char buf[3];
295
296 buf[0] = hci_dev_test_flag(hdev, HCI_SC_ONLY) ? 'Y' : 'N';
297 buf[1] = '\n';
298 buf[2] = '\0';
299 return simple_read_from_buffer(user_buf, count, ppos, buf, 2);
300}
301
302static const struct file_operations sc_only_mode_fops = {
303 .open = simple_open,
304 .read = sc_only_mode_read,
305 .llseek = default_llseek,
306};
307
308DEFINE_INFO_ATTRIBUTE(hardware_info, hw_info);
309DEFINE_INFO_ATTRIBUTE(firmware_info, fw_info);
310
311void hci_debugfs_create_common(struct hci_dev *hdev)
312{
313 debugfs_create_file("features", 0444, hdev->debugfs, hdev,
314 &features_fops);
315 debugfs_create_u16("manufacturer", 0444, hdev->debugfs,
316 &hdev->manufacturer);
317 debugfs_create_u8("hci_version", 0444, hdev->debugfs, &hdev->hci_ver);
318 debugfs_create_u16("hci_revision", 0444, hdev->debugfs, &hdev->hci_rev);
319 debugfs_create_u8("hardware_error", 0444, hdev->debugfs,
320 &hdev->hw_error_code);
321 debugfs_create_file("device_id", 0444, hdev->debugfs, hdev,
322 &device_id_fops);
323
324 debugfs_create_file("device_list", 0444, hdev->debugfs, hdev,
325 &device_list_fops);
326 debugfs_create_file("blacklist", 0444, hdev->debugfs, hdev,
327 &blacklist_fops);
328 debugfs_create_file("blocked_keys", 0444, hdev->debugfs, hdev,
329 &blocked_keys_fops);
330 debugfs_create_file("uuids", 0444, hdev->debugfs, hdev, &uuids_fops);
331 debugfs_create_file("remote_oob", 0400, hdev->debugfs, hdev,
332 &remote_oob_fops);
333
334 debugfs_create_file("conn_info_min_age", 0644, hdev->debugfs, hdev,
335 &conn_info_min_age_fops);
336 debugfs_create_file("conn_info_max_age", 0644, hdev->debugfs, hdev,
337 &conn_info_max_age_fops);
338
339 if (lmp_ssp_capable(hdev) || lmp_le_capable(hdev))
340 debugfs_create_file("use_debug_keys", 0444, hdev->debugfs,
341 hdev, &use_debug_keys_fops);
342
343 if (lmp_sc_capable(hdev) || lmp_le_capable(hdev))
344 debugfs_create_file("sc_only_mode", 0444, hdev->debugfs,
345 hdev, &sc_only_mode_fops);
346
347 if (hdev->hw_info)
348 debugfs_create_file("hardware_info", 0444, hdev->debugfs,
349 hdev, &hardware_info_fops);
350
351 if (hdev->fw_info)
352 debugfs_create_file("firmware_info", 0444, hdev->debugfs,
353 hdev, &firmware_info_fops);
354}
355
356static int inquiry_cache_show(struct seq_file *f, void *p)
357{
358 struct hci_dev *hdev = f->private;
359 struct discovery_state *cache = &hdev->discovery;
360 struct inquiry_entry *e;
361
362 hci_dev_lock(hdev);
363
364 list_for_each_entry(e, &cache->all, all) {
365 struct inquiry_data *data = &e->data;
366 seq_printf(f, "%pMR %d %d %d 0x%.2x%.2x%.2x 0x%.4x %d %d %u\n",
367 &data->bdaddr,
368 data->pscan_rep_mode, data->pscan_period_mode,
369 data->pscan_mode, data->dev_class[2],
370 data->dev_class[1], data->dev_class[0],
371 __le16_to_cpu(data->clock_offset),
372 data->rssi, data->ssp_mode, e->timestamp);
373 }
374
375 hci_dev_unlock(hdev);
376
377 return 0;
378}
379
380DEFINE_SHOW_ATTRIBUTE(inquiry_cache);
381
382static int link_keys_show(struct seq_file *f, void *ptr)
383{
384 struct hci_dev *hdev = f->private;
385 struct link_key *key;
386
387 rcu_read_lock();
388 list_for_each_entry_rcu(key, &hdev->link_keys, list)
389 seq_printf(f, "%pMR %u %*phN %u\n", &key->bdaddr, key->type,
390 HCI_LINK_KEY_SIZE, key->val, key->pin_len);
391 rcu_read_unlock();
392
393 return 0;
394}
395
396DEFINE_SHOW_ATTRIBUTE(link_keys);
397
398static int dev_class_show(struct seq_file *f, void *ptr)
399{
400 struct hci_dev *hdev = f->private;
401
402 hci_dev_lock(hdev);
403 seq_printf(f, "0x%.2x%.2x%.2x\n", hdev->dev_class[2],
404 hdev->dev_class[1], hdev->dev_class[0]);
405 hci_dev_unlock(hdev);
406
407 return 0;
408}
409
410DEFINE_SHOW_ATTRIBUTE(dev_class);
411
412static int voice_setting_get(void *data, u64 *val)
413{
414 struct hci_dev *hdev = data;
415
416 hci_dev_lock(hdev);
417 *val = hdev->voice_setting;
418 hci_dev_unlock(hdev);
419
420 return 0;
421}
422
423DEFINE_DEBUGFS_ATTRIBUTE(voice_setting_fops, voice_setting_get,
424 NULL, "0x%4.4llx\n");
425
426static ssize_t ssp_debug_mode_read(struct file *file, char __user *user_buf,
427 size_t count, loff_t *ppos)
428{
429 struct hci_dev *hdev = file->private_data;
430 char buf[3];
431
432 buf[0] = hdev->ssp_debug_mode ? 'Y' : 'N';
433 buf[1] = '\n';
434 buf[2] = '\0';
435 return simple_read_from_buffer(user_buf, count, ppos, buf, 2);
436}
437
438static const struct file_operations ssp_debug_mode_fops = {
439 .open = simple_open,
440 .read = ssp_debug_mode_read,
441 .llseek = default_llseek,
442};
443
444static int auto_accept_delay_set(void *data, u64 val)
445{
446 struct hci_dev *hdev = data;
447
448 hci_dev_lock(hdev);
449 hdev->auto_accept_delay = val;
450 hci_dev_unlock(hdev);
451
452 return 0;
453}
454
455static int min_encrypt_key_size_set(void *data, u64 val)
456{
457 struct hci_dev *hdev = data;
458
459 if (val < 1 || val > 16)
460 return -EINVAL;
461
462 hci_dev_lock(hdev);
463 hdev->min_enc_key_size = val;
464 hci_dev_unlock(hdev);
465
466 return 0;
467}
468
469static int min_encrypt_key_size_get(void *data, u64 *val)
470{
471 struct hci_dev *hdev = data;
472
473 hci_dev_lock(hdev);
474 *val = hdev->min_enc_key_size;
475 hci_dev_unlock(hdev);
476
477 return 0;
478}
479
480DEFINE_DEBUGFS_ATTRIBUTE(min_encrypt_key_size_fops,
481 min_encrypt_key_size_get,
482 min_encrypt_key_size_set, "%llu\n");
483
484static int auto_accept_delay_get(void *data, u64 *val)
485{
486 struct hci_dev *hdev = data;
487
488 hci_dev_lock(hdev);
489 *val = hdev->auto_accept_delay;
490 hci_dev_unlock(hdev);
491
492 return 0;
493}
494
495DEFINE_DEBUGFS_ATTRIBUTE(auto_accept_delay_fops, auto_accept_delay_get,
496 auto_accept_delay_set, "%llu\n");
497
498static ssize_t force_bredr_smp_read(struct file *file,
499 char __user *user_buf,
500 size_t count, loff_t *ppos)
501{
502 struct hci_dev *hdev = file->private_data;
503 char buf[3];
504
505 buf[0] = hci_dev_test_flag(hdev, HCI_FORCE_BREDR_SMP) ? 'Y' : 'N';
506 buf[1] = '\n';
507 buf[2] = '\0';
508 return simple_read_from_buffer(user_buf, count, ppos, buf, 2);
509}
510
511static ssize_t force_bredr_smp_write(struct file *file,
512 const char __user *user_buf,
513 size_t count, loff_t *ppos)
514{
515 struct hci_dev *hdev = file->private_data;
516 bool enable;
517 int err;
518
519 err = kstrtobool_from_user(user_buf, count, &enable);
520 if (err)
521 return err;
522
523 err = smp_force_bredr(hdev, enable);
524 if (err)
525 return err;
526
527 return count;
528}
529
530static const struct file_operations force_bredr_smp_fops = {
531 .open = simple_open,
532 .read = force_bredr_smp_read,
533 .write = force_bredr_smp_write,
534 .llseek = default_llseek,
535};
536
537static int idle_timeout_set(void *data, u64 val)
538{
539 struct hci_dev *hdev = data;
540
541 if (val != 0 && (val < 500 || val > 3600000))
542 return -EINVAL;
543
544 hci_dev_lock(hdev);
545 hdev->idle_timeout = val;
546 hci_dev_unlock(hdev);
547
548 return 0;
549}
550
551static int idle_timeout_get(void *data, u64 *val)
552{
553 struct hci_dev *hdev = data;
554
555 hci_dev_lock(hdev);
556 *val = hdev->idle_timeout;
557 hci_dev_unlock(hdev);
558
559 return 0;
560}
561
562DEFINE_DEBUGFS_ATTRIBUTE(idle_timeout_fops, idle_timeout_get,
563 idle_timeout_set, "%llu\n");
564
565static int sniff_min_interval_set(void *data, u64 val)
566{
567 struct hci_dev *hdev = data;
568
569 if (val == 0 || val % 2 || val > hdev->sniff_max_interval)
570 return -EINVAL;
571
572 hci_dev_lock(hdev);
573 hdev->sniff_min_interval = val;
574 hci_dev_unlock(hdev);
575
576 return 0;
577}
578
579static int sniff_min_interval_get(void *data, u64 *val)
580{
581 struct hci_dev *hdev = data;
582
583 hci_dev_lock(hdev);
584 *val = hdev->sniff_min_interval;
585 hci_dev_unlock(hdev);
586
587 return 0;
588}
589
590DEFINE_DEBUGFS_ATTRIBUTE(sniff_min_interval_fops, sniff_min_interval_get,
591 sniff_min_interval_set, "%llu\n");
592
593static int sniff_max_interval_set(void *data, u64 val)
594{
595 struct hci_dev *hdev = data;
596
597 if (val == 0 || val % 2 || val < hdev->sniff_min_interval)
598 return -EINVAL;
599
600 hci_dev_lock(hdev);
601 hdev->sniff_max_interval = val;
602 hci_dev_unlock(hdev);
603
604 return 0;
605}
606
607static int sniff_max_interval_get(void *data, u64 *val)
608{
609 struct hci_dev *hdev = data;
610
611 hci_dev_lock(hdev);
612 *val = hdev->sniff_max_interval;
613 hci_dev_unlock(hdev);
614
615 return 0;
616}
617
618DEFINE_DEBUGFS_ATTRIBUTE(sniff_max_interval_fops, sniff_max_interval_get,
619 sniff_max_interval_set, "%llu\n");
620
621void hci_debugfs_create_bredr(struct hci_dev *hdev)
622{
623 debugfs_create_file("inquiry_cache", 0444, hdev->debugfs, hdev,
624 &inquiry_cache_fops);
625 debugfs_create_file("link_keys", 0400, hdev->debugfs, hdev,
626 &link_keys_fops);
627 debugfs_create_file("dev_class", 0444, hdev->debugfs, hdev,
628 &dev_class_fops);
629 debugfs_create_file("voice_setting", 0444, hdev->debugfs, hdev,
630 &voice_setting_fops);
631
632 /* If the controller does not support BR/EDR Secure Connections
633 * feature, then the BR/EDR SMP channel shall not be present.
634 *
635 * To test this with Bluetooth 4.0 controllers, create a debugfs
636 * switch that allows forcing BR/EDR SMP support and accepting
637 * cross-transport pairing on non-AES encrypted connections.
638 */
639 if (!lmp_sc_capable(hdev))
640 debugfs_create_file("force_bredr_smp", 0644, hdev->debugfs,
641 hdev, &force_bredr_smp_fops);
642
643 if (lmp_ssp_capable(hdev)) {
644 debugfs_create_file("ssp_debug_mode", 0444, hdev->debugfs,
645 hdev, &ssp_debug_mode_fops);
646 debugfs_create_file("min_encrypt_key_size", 0644, hdev->debugfs,
647 hdev, &min_encrypt_key_size_fops);
648 debugfs_create_file("auto_accept_delay", 0644, hdev->debugfs,
649 hdev, &auto_accept_delay_fops);
650 }
651
652 if (lmp_sniff_capable(hdev)) {
653 debugfs_create_file("idle_timeout", 0644, hdev->debugfs,
654 hdev, &idle_timeout_fops);
655 debugfs_create_file("sniff_min_interval", 0644, hdev->debugfs,
656 hdev, &sniff_min_interval_fops);
657 debugfs_create_file("sniff_max_interval", 0644, hdev->debugfs,
658 hdev, &sniff_max_interval_fops);
659 }
660}
661
662static int identity_show(struct seq_file *f, void *p)
663{
664 struct hci_dev *hdev = f->private;
665 bdaddr_t addr;
666 u8 addr_type;
667
668 hci_dev_lock(hdev);
669
670 hci_copy_identity_address(hdev, &addr, &addr_type);
671
672 seq_printf(f, "%pMR (type %u) %*phN %pMR\n", &addr, addr_type,
673 16, hdev->irk, &hdev->rpa);
674
675 hci_dev_unlock(hdev);
676
677 return 0;
678}
679
680DEFINE_SHOW_ATTRIBUTE(identity);
681
682static int rpa_timeout_set(void *data, u64 val)
683{
684 struct hci_dev *hdev = data;
685
686 /* Require the RPA timeout to be at least 30 seconds and at most
687 * 24 hours.
688 */
689 if (val < 30 || val > (60 * 60 * 24))
690 return -EINVAL;
691
692 hci_dev_lock(hdev);
693 hdev->rpa_timeout = val;
694 hci_dev_unlock(hdev);
695
696 return 0;
697}
698
699static int rpa_timeout_get(void *data, u64 *val)
700{
701 struct hci_dev *hdev = data;
702
703 hci_dev_lock(hdev);
704 *val = hdev->rpa_timeout;
705 hci_dev_unlock(hdev);
706
707 return 0;
708}
709
710DEFINE_DEBUGFS_ATTRIBUTE(rpa_timeout_fops, rpa_timeout_get,
711 rpa_timeout_set, "%llu\n");
712
713static int random_address_show(struct seq_file *f, void *p)
714{
715 struct hci_dev *hdev = f->private;
716
717 hci_dev_lock(hdev);
718 seq_printf(f, "%pMR\n", &hdev->random_addr);
719 hci_dev_unlock(hdev);
720
721 return 0;
722}
723
724DEFINE_SHOW_ATTRIBUTE(random_address);
725
726static int static_address_show(struct seq_file *f, void *p)
727{
728 struct hci_dev *hdev = f->private;
729
730 hci_dev_lock(hdev);
731 seq_printf(f, "%pMR\n", &hdev->static_addr);
732 hci_dev_unlock(hdev);
733
734 return 0;
735}
736
737DEFINE_SHOW_ATTRIBUTE(static_address);
738
739static ssize_t force_static_address_read(struct file *file,
740 char __user *user_buf,
741 size_t count, loff_t *ppos)
742{
743 struct hci_dev *hdev = file->private_data;
744 char buf[3];
745
746 buf[0] = hci_dev_test_flag(hdev, HCI_FORCE_STATIC_ADDR) ? 'Y' : 'N';
747 buf[1] = '\n';
748 buf[2] = '\0';
749 return simple_read_from_buffer(user_buf, count, ppos, buf, 2);
750}
751
752static ssize_t force_static_address_write(struct file *file,
753 const char __user *user_buf,
754 size_t count, loff_t *ppos)
755{
756 struct hci_dev *hdev = file->private_data;
757 bool enable;
758 int err;
759
760 if (hdev_is_powered(hdev))
761 return -EBUSY;
762
763 err = kstrtobool_from_user(user_buf, count, &enable);
764 if (err)
765 return err;
766
767 if (enable == hci_dev_test_flag(hdev, HCI_FORCE_STATIC_ADDR))
768 return -EALREADY;
769
770 hci_dev_change_flag(hdev, HCI_FORCE_STATIC_ADDR);
771
772 return count;
773}
774
775static const struct file_operations force_static_address_fops = {
776 .open = simple_open,
777 .read = force_static_address_read,
778 .write = force_static_address_write,
779 .llseek = default_llseek,
780};
781
782static int white_list_show(struct seq_file *f, void *ptr)
783{
784 struct hci_dev *hdev = f->private;
785 struct bdaddr_list *b;
786
787 hci_dev_lock(hdev);
788 list_for_each_entry(b, &hdev->le_accept_list, list)
789 seq_printf(f, "%pMR (type %u)\n", &b->bdaddr, b->bdaddr_type);
790 hci_dev_unlock(hdev);
791
792 return 0;
793}
794
795DEFINE_SHOW_ATTRIBUTE(white_list);
796
797static int resolv_list_show(struct seq_file *f, void *ptr)
798{
799 struct hci_dev *hdev = f->private;
800 struct bdaddr_list *b;
801
802 hci_dev_lock(hdev);
803 list_for_each_entry(b, &hdev->le_resolv_list, list)
804 seq_printf(f, "%pMR (type %u)\n", &b->bdaddr, b->bdaddr_type);
805 hci_dev_unlock(hdev);
806
807 return 0;
808}
809
810DEFINE_SHOW_ATTRIBUTE(resolv_list);
811
812static int identity_resolving_keys_show(struct seq_file *f, void *ptr)
813{
814 struct hci_dev *hdev = f->private;
815 struct smp_irk *irk;
816
817 rcu_read_lock();
818 list_for_each_entry_rcu(irk, &hdev->identity_resolving_keys, list) {
819 seq_printf(f, "%pMR (type %u) %*phN %pMR\n",
820 &irk->bdaddr, irk->addr_type,
821 16, irk->val, &irk->rpa);
822 }
823 rcu_read_unlock();
824
825 return 0;
826}
827
828DEFINE_SHOW_ATTRIBUTE(identity_resolving_keys);
829
830static int long_term_keys_show(struct seq_file *f, void *ptr)
831{
832 struct hci_dev *hdev = f->private;
833 struct smp_ltk *ltk;
834
835 rcu_read_lock();
836 list_for_each_entry_rcu(ltk, &hdev->long_term_keys, list)
837 seq_printf(f, "%pMR (type %u) %u 0x%02x %u %.4x %.16llx %*phN\n",
838 <k->bdaddr, ltk->bdaddr_type, ltk->authenticated,
839 ltk->type, ltk->enc_size, __le16_to_cpu(ltk->ediv),
840 __le64_to_cpu(ltk->rand), 16, ltk->val);
841 rcu_read_unlock();
842
843 return 0;
844}
845
846DEFINE_SHOW_ATTRIBUTE(long_term_keys);
847
848static int conn_min_interval_set(void *data, u64 val)
849{
850 struct hci_dev *hdev = data;
851
852 if (val < 0x0006 || val > 0x0c80 || val > hdev->le_conn_max_interval)
853 return -EINVAL;
854
855 hci_dev_lock(hdev);
856 hdev->le_conn_min_interval = val;
857 hci_dev_unlock(hdev);
858
859 return 0;
860}
861
862static int conn_min_interval_get(void *data, u64 *val)
863{
864 struct hci_dev *hdev = data;
865
866 hci_dev_lock(hdev);
867 *val = hdev->le_conn_min_interval;
868 hci_dev_unlock(hdev);
869
870 return 0;
871}
872
873DEFINE_DEBUGFS_ATTRIBUTE(conn_min_interval_fops, conn_min_interval_get,
874 conn_min_interval_set, "%llu\n");
875
876static int conn_max_interval_set(void *data, u64 val)
877{
878 struct hci_dev *hdev = data;
879
880 if (val < 0x0006 || val > 0x0c80 || val < hdev->le_conn_min_interval)
881 return -EINVAL;
882
883 hci_dev_lock(hdev);
884 hdev->le_conn_max_interval = val;
885 hci_dev_unlock(hdev);
886
887 return 0;
888}
889
890static int conn_max_interval_get(void *data, u64 *val)
891{
892 struct hci_dev *hdev = data;
893
894 hci_dev_lock(hdev);
895 *val = hdev->le_conn_max_interval;
896 hci_dev_unlock(hdev);
897
898 return 0;
899}
900
901DEFINE_DEBUGFS_ATTRIBUTE(conn_max_interval_fops, conn_max_interval_get,
902 conn_max_interval_set, "%llu\n");
903
904static int conn_latency_set(void *data, u64 val)
905{
906 struct hci_dev *hdev = data;
907
908 if (val > 0x01f3)
909 return -EINVAL;
910
911 hci_dev_lock(hdev);
912 hdev->le_conn_latency = val;
913 hci_dev_unlock(hdev);
914
915 return 0;
916}
917
918static int conn_latency_get(void *data, u64 *val)
919{
920 struct hci_dev *hdev = data;
921
922 hci_dev_lock(hdev);
923 *val = hdev->le_conn_latency;
924 hci_dev_unlock(hdev);
925
926 return 0;
927}
928
929DEFINE_DEBUGFS_ATTRIBUTE(conn_latency_fops, conn_latency_get,
930 conn_latency_set, "%llu\n");
931
932static int supervision_timeout_set(void *data, u64 val)
933{
934 struct hci_dev *hdev = data;
935
936 if (val < 0x000a || val > 0x0c80)
937 return -EINVAL;
938
939 hci_dev_lock(hdev);
940 hdev->le_supv_timeout = val;
941 hci_dev_unlock(hdev);
942
943 return 0;
944}
945
946static int supervision_timeout_get(void *data, u64 *val)
947{
948 struct hci_dev *hdev = data;
949
950 hci_dev_lock(hdev);
951 *val = hdev->le_supv_timeout;
952 hci_dev_unlock(hdev);
953
954 return 0;
955}
956
957DEFINE_DEBUGFS_ATTRIBUTE(supervision_timeout_fops, supervision_timeout_get,
958 supervision_timeout_set, "%llu\n");
959
960static int adv_channel_map_set(void *data, u64 val)
961{
962 struct hci_dev *hdev = data;
963
964 if (val < 0x01 || val > 0x07)
965 return -EINVAL;
966
967 hci_dev_lock(hdev);
968 hdev->le_adv_channel_map = val;
969 hci_dev_unlock(hdev);
970
971 return 0;
972}
973
974static int adv_channel_map_get(void *data, u64 *val)
975{
976 struct hci_dev *hdev = data;
977
978 hci_dev_lock(hdev);
979 *val = hdev->le_adv_channel_map;
980 hci_dev_unlock(hdev);
981
982 return 0;
983}
984
985DEFINE_DEBUGFS_ATTRIBUTE(adv_channel_map_fops, adv_channel_map_get,
986 adv_channel_map_set, "%llu\n");
987
988static int adv_min_interval_set(void *data, u64 val)
989{
990 struct hci_dev *hdev = data;
991
992 if (val < 0x0020 || val > 0x4000 || val > hdev->le_adv_max_interval)
993 return -EINVAL;
994
995 hci_dev_lock(hdev);
996 hdev->le_adv_min_interval = val;
997 hci_dev_unlock(hdev);
998
999 return 0;
1000}
1001
1002static int adv_min_interval_get(void *data, u64 *val)
1003{
1004 struct hci_dev *hdev = data;
1005
1006 hci_dev_lock(hdev);
1007 *val = hdev->le_adv_min_interval;
1008 hci_dev_unlock(hdev);
1009
1010 return 0;
1011}
1012
1013DEFINE_DEBUGFS_ATTRIBUTE(adv_min_interval_fops, adv_min_interval_get,
1014 adv_min_interval_set, "%llu\n");
1015
1016static int adv_max_interval_set(void *data, u64 val)
1017{
1018 struct hci_dev *hdev = data;
1019
1020 if (val < 0x0020 || val > 0x4000 || val < hdev->le_adv_min_interval)
1021 return -EINVAL;
1022
1023 hci_dev_lock(hdev);
1024 hdev->le_adv_max_interval = val;
1025 hci_dev_unlock(hdev);
1026
1027 return 0;
1028}
1029
1030static int adv_max_interval_get(void *data, u64 *val)
1031{
1032 struct hci_dev *hdev = data;
1033
1034 hci_dev_lock(hdev);
1035 *val = hdev->le_adv_max_interval;
1036 hci_dev_unlock(hdev);
1037
1038 return 0;
1039}
1040
1041DEFINE_DEBUGFS_ATTRIBUTE(adv_max_interval_fops, adv_max_interval_get,
1042 adv_max_interval_set, "%llu\n");
1043
1044static int min_key_size_set(void *data, u64 val)
1045{
1046 struct hci_dev *hdev = data;
1047
1048 if (val > hdev->le_max_key_size || val < SMP_MIN_ENC_KEY_SIZE)
1049 return -EINVAL;
1050
1051 hci_dev_lock(hdev);
1052 hdev->le_min_key_size = val;
1053 hci_dev_unlock(hdev);
1054
1055 return 0;
1056}
1057
1058static int min_key_size_get(void *data, u64 *val)
1059{
1060 struct hci_dev *hdev = data;
1061
1062 hci_dev_lock(hdev);
1063 *val = hdev->le_min_key_size;
1064 hci_dev_unlock(hdev);
1065
1066 return 0;
1067}
1068
1069DEFINE_DEBUGFS_ATTRIBUTE(min_key_size_fops, min_key_size_get,
1070 min_key_size_set, "%llu\n");
1071
1072static int max_key_size_set(void *data, u64 val)
1073{
1074 struct hci_dev *hdev = data;
1075
1076 if (val > SMP_MAX_ENC_KEY_SIZE || val < hdev->le_min_key_size)
1077 return -EINVAL;
1078
1079 hci_dev_lock(hdev);
1080 hdev->le_max_key_size = val;
1081 hci_dev_unlock(hdev);
1082
1083 return 0;
1084}
1085
1086static int max_key_size_get(void *data, u64 *val)
1087{
1088 struct hci_dev *hdev = data;
1089
1090 hci_dev_lock(hdev);
1091 *val = hdev->le_max_key_size;
1092 hci_dev_unlock(hdev);
1093
1094 return 0;
1095}
1096
1097DEFINE_DEBUGFS_ATTRIBUTE(max_key_size_fops, max_key_size_get,
1098 max_key_size_set, "%llu\n");
1099
1100static int auth_payload_timeout_set(void *data, u64 val)
1101{
1102 struct hci_dev *hdev = data;
1103
1104 if (val < 0x0001 || val > 0xffff)
1105 return -EINVAL;
1106
1107 hci_dev_lock(hdev);
1108 hdev->auth_payload_timeout = val;
1109 hci_dev_unlock(hdev);
1110
1111 return 0;
1112}
1113
1114static int auth_payload_timeout_get(void *data, u64 *val)
1115{
1116 struct hci_dev *hdev = data;
1117
1118 hci_dev_lock(hdev);
1119 *val = hdev->auth_payload_timeout;
1120 hci_dev_unlock(hdev);
1121
1122 return 0;
1123}
1124
1125DEFINE_DEBUGFS_ATTRIBUTE(auth_payload_timeout_fops,
1126 auth_payload_timeout_get,
1127 auth_payload_timeout_set, "%llu\n");
1128
1129static ssize_t force_no_mitm_read(struct file *file,
1130 char __user *user_buf,
1131 size_t count, loff_t *ppos)
1132{
1133 struct hci_dev *hdev = file->private_data;
1134 char buf[3];
1135
1136 buf[0] = hci_dev_test_flag(hdev, HCI_FORCE_NO_MITM) ? 'Y' : 'N';
1137 buf[1] = '\n';
1138 buf[2] = '\0';
1139 return simple_read_from_buffer(user_buf, count, ppos, buf, 2);
1140}
1141
1142static ssize_t force_no_mitm_write(struct file *file,
1143 const char __user *user_buf,
1144 size_t count, loff_t *ppos)
1145{
1146 struct hci_dev *hdev = file->private_data;
1147 char buf[32];
1148 size_t buf_size = min(count, (sizeof(buf) - 1));
1149 bool enable;
1150
1151 if (copy_from_user(buf, user_buf, buf_size))
1152 return -EFAULT;
1153
1154 buf[buf_size] = '\0';
1155 if (strtobool(buf, &enable))
1156 return -EINVAL;
1157
1158 if (enable == hci_dev_test_flag(hdev, HCI_FORCE_NO_MITM))
1159 return -EALREADY;
1160
1161 hci_dev_change_flag(hdev, HCI_FORCE_NO_MITM);
1162
1163 return count;
1164}
1165
1166static const struct file_operations force_no_mitm_fops = {
1167 .open = simple_open,
1168 .read = force_no_mitm_read,
1169 .write = force_no_mitm_write,
1170 .llseek = default_llseek,
1171};
1172
1173DEFINE_QUIRK_ATTRIBUTE(quirk_strict_duplicate_filter,
1174 HCI_QUIRK_STRICT_DUPLICATE_FILTER);
1175DEFINE_QUIRK_ATTRIBUTE(quirk_simultaneous_discovery,
1176 HCI_QUIRK_SIMULTANEOUS_DISCOVERY);
1177
1178void hci_debugfs_create_le(struct hci_dev *hdev)
1179{
1180 debugfs_create_file("identity", 0400, hdev->debugfs, hdev,
1181 &identity_fops);
1182 debugfs_create_file("rpa_timeout", 0644, hdev->debugfs, hdev,
1183 &rpa_timeout_fops);
1184 debugfs_create_file("random_address", 0444, hdev->debugfs, hdev,
1185 &random_address_fops);
1186 debugfs_create_file("static_address", 0444, hdev->debugfs, hdev,
1187 &static_address_fops);
1188
1189 /* For controllers with a public address, provide a debug
1190 * option to force the usage of the configured static
1191 * address. By default the public address is used.
1192 */
1193 if (bacmp(&hdev->bdaddr, BDADDR_ANY))
1194 debugfs_create_file("force_static_address", 0644,
1195 hdev->debugfs, hdev,
1196 &force_static_address_fops);
1197
1198 debugfs_create_u8("white_list_size", 0444, hdev->debugfs,
1199 &hdev->le_accept_list_size);
1200 debugfs_create_file("white_list", 0444, hdev->debugfs, hdev,
1201 &white_list_fops);
1202 debugfs_create_u8("resolv_list_size", 0444, hdev->debugfs,
1203 &hdev->le_resolv_list_size);
1204 debugfs_create_file("resolv_list", 0444, hdev->debugfs, hdev,
1205 &resolv_list_fops);
1206 debugfs_create_file("identity_resolving_keys", 0400, hdev->debugfs,
1207 hdev, &identity_resolving_keys_fops);
1208 debugfs_create_file("long_term_keys", 0400, hdev->debugfs, hdev,
1209 &long_term_keys_fops);
1210 debugfs_create_file("conn_min_interval", 0644, hdev->debugfs, hdev,
1211 &conn_min_interval_fops);
1212 debugfs_create_file("conn_max_interval", 0644, hdev->debugfs, hdev,
1213 &conn_max_interval_fops);
1214 debugfs_create_file("conn_latency", 0644, hdev->debugfs, hdev,
1215 &conn_latency_fops);
1216 debugfs_create_file("supervision_timeout", 0644, hdev->debugfs, hdev,
1217 &supervision_timeout_fops);
1218 debugfs_create_file("adv_channel_map", 0644, hdev->debugfs, hdev,
1219 &adv_channel_map_fops);
1220 debugfs_create_file("adv_min_interval", 0644, hdev->debugfs, hdev,
1221 &adv_min_interval_fops);
1222 debugfs_create_file("adv_max_interval", 0644, hdev->debugfs, hdev,
1223 &adv_max_interval_fops);
1224 debugfs_create_u16("discov_interleaved_timeout", 0644, hdev->debugfs,
1225 &hdev->discov_interleaved_timeout);
1226 debugfs_create_file("min_key_size", 0644, hdev->debugfs, hdev,
1227 &min_key_size_fops);
1228 debugfs_create_file("max_key_size", 0644, hdev->debugfs, hdev,
1229 &max_key_size_fops);
1230 debugfs_create_file("auth_payload_timeout", 0644, hdev->debugfs, hdev,
1231 &auth_payload_timeout_fops);
1232 debugfs_create_file("force_no_mitm", 0644, hdev->debugfs, hdev,
1233 &force_no_mitm_fops);
1234
1235 debugfs_create_file("quirk_strict_duplicate_filter", 0644,
1236 hdev->debugfs, hdev,
1237 &quirk_strict_duplicate_filter_fops);
1238 debugfs_create_file("quirk_simultaneous_discovery", 0644,
1239 hdev->debugfs, hdev,
1240 &quirk_simultaneous_discovery_fops);
1241}
1242
1243void hci_debugfs_create_conn(struct hci_conn *conn)
1244{
1245 struct hci_dev *hdev = conn->hdev;
1246 char name[6];
1247
1248 if (IS_ERR_OR_NULL(hdev->debugfs) || conn->debugfs)
1249 return;
1250
1251 snprintf(name, sizeof(name), "%u", conn->handle);
1252 conn->debugfs = debugfs_create_dir(name, hdev->debugfs);
1253}
1254
1255static ssize_t dut_mode_read(struct file *file, char __user *user_buf,
1256 size_t count, loff_t *ppos)
1257{
1258 struct hci_dev *hdev = file->private_data;
1259 char buf[3];
1260
1261 buf[0] = hci_dev_test_flag(hdev, HCI_DUT_MODE) ? 'Y' : 'N';
1262 buf[1] = '\n';
1263 buf[2] = '\0';
1264 return simple_read_from_buffer(user_buf, count, ppos, buf, 2);
1265}
1266
1267static ssize_t dut_mode_write(struct file *file, const char __user *user_buf,
1268 size_t count, loff_t *ppos)
1269{
1270 struct hci_dev *hdev = file->private_data;
1271 struct sk_buff *skb;
1272 bool enable;
1273 int err;
1274
1275 if (!test_bit(HCI_UP, &hdev->flags))
1276 return -ENETDOWN;
1277
1278 err = kstrtobool_from_user(user_buf, count, &enable);
1279 if (err)
1280 return err;
1281
1282 if (enable == hci_dev_test_flag(hdev, HCI_DUT_MODE))
1283 return -EALREADY;
1284
1285 hci_req_sync_lock(hdev);
1286 if (enable)
1287 skb = __hci_cmd_sync(hdev, HCI_OP_ENABLE_DUT_MODE, 0, NULL,
1288 HCI_CMD_TIMEOUT);
1289 else
1290 skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL,
1291 HCI_CMD_TIMEOUT);
1292 hci_req_sync_unlock(hdev);
1293
1294 if (IS_ERR(skb))
1295 return PTR_ERR(skb);
1296
1297 kfree_skb(skb);
1298
1299 hci_dev_change_flag(hdev, HCI_DUT_MODE);
1300
1301 return count;
1302}
1303
1304static const struct file_operations dut_mode_fops = {
1305 .open = simple_open,
1306 .read = dut_mode_read,
1307 .write = dut_mode_write,
1308 .llseek = default_llseek,
1309};
1310
1311static ssize_t vendor_diag_read(struct file *file, char __user *user_buf,
1312 size_t count, loff_t *ppos)
1313{
1314 struct hci_dev *hdev = file->private_data;
1315 char buf[3];
1316
1317 buf[0] = hci_dev_test_flag(hdev, HCI_VENDOR_DIAG) ? 'Y' : 'N';
1318 buf[1] = '\n';
1319 buf[2] = '\0';
1320 return simple_read_from_buffer(user_buf, count, ppos, buf, 2);
1321}
1322
1323static ssize_t vendor_diag_write(struct file *file, const char __user *user_buf,
1324 size_t count, loff_t *ppos)
1325{
1326 struct hci_dev *hdev = file->private_data;
1327 bool enable;
1328 int err;
1329
1330 err = kstrtobool_from_user(user_buf, count, &enable);
1331 if (err)
1332 return err;
1333
1334 /* When the diagnostic flags are not persistent and the transport
1335 * is not active or in user channel operation, then there is no need
1336 * for the vendor callback. Instead just store the desired value and
1337 * the setting will be programmed when the controller gets powered on.
1338 */
1339 if (test_bit(HCI_QUIRK_NON_PERSISTENT_DIAG, &hdev->quirks) &&
1340 (!test_bit(HCI_RUNNING, &hdev->flags) ||
1341 hci_dev_test_flag(hdev, HCI_USER_CHANNEL)))
1342 goto done;
1343
1344 hci_req_sync_lock(hdev);
1345 err = hdev->set_diag(hdev, enable);
1346 hci_req_sync_unlock(hdev);
1347
1348 if (err < 0)
1349 return err;
1350
1351done:
1352 if (enable)
1353 hci_dev_set_flag(hdev, HCI_VENDOR_DIAG);
1354 else
1355 hci_dev_clear_flag(hdev, HCI_VENDOR_DIAG);
1356
1357 return count;
1358}
1359
1360static const struct file_operations vendor_diag_fops = {
1361 .open = simple_open,
1362 .read = vendor_diag_read,
1363 .write = vendor_diag_write,
1364 .llseek = default_llseek,
1365};
1366
1367void hci_debugfs_create_basic(struct hci_dev *hdev)
1368{
1369 debugfs_create_file("dut_mode", 0644, hdev->debugfs, hdev,
1370 &dut_mode_fops);
1371
1372 if (hdev->set_diag)
1373 debugfs_create_file("vendor_diag", 0644, hdev->debugfs, hdev,
1374 &vendor_diag_fops);
1375}