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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
26#include <net/bluetooth/bluetooth.h>
27#include <net/bluetooth/hci_core.h>
28
29#include "hci_debugfs.h"
30
31#define DEFINE_QUIRK_ATTRIBUTE(__name, __quirk) \
32static ssize_t __name ## _read(struct file *file, \
33 char __user *user_buf, \
34 size_t count, loff_t *ppos) \
35{ \
36 struct hci_dev *hdev = file->private_data; \
37 char buf[3]; \
38 \
39 buf[0] = test_bit(__quirk, &hdev->quirks) ? 'Y' : 'N'; \
40 buf[1] = '\n'; \
41 buf[2] = '\0'; \
42 return simple_read_from_buffer(user_buf, count, ppos, buf, 2); \
43} \
44 \
45static ssize_t __name ## _write(struct file *file, \
46 const char __user *user_buf, \
47 size_t count, loff_t *ppos) \
48{ \
49 struct hci_dev *hdev = file->private_data; \
50 char buf[32]; \
51 size_t buf_size = min(count, (sizeof(buf) - 1)); \
52 bool enable; \
53 \
54 if (test_bit(HCI_UP, &hdev->flags)) \
55 return -EBUSY; \
56 \
57 if (copy_from_user(buf, user_buf, buf_size)) \
58 return -EFAULT; \
59 \
60 buf[buf_size] = '\0'; \
61 if (strtobool(buf, &enable)) \
62 return -EINVAL; \
63 \
64 if (enable == test_bit(__quirk, &hdev->quirks)) \
65 return -EALREADY; \
66 \
67 change_bit(__quirk, &hdev->quirks); \
68 \
69 return count; \
70} \
71 \
72static const struct file_operations __name ## _fops = { \
73 .open = simple_open, \
74 .read = __name ## _read, \
75 .write = __name ## _write, \
76 .llseek = default_llseek, \
77} \
78
79static int features_show(struct seq_file *f, void *ptr)
80{
81 struct hci_dev *hdev = f->private;
82 u8 p;
83
84 hci_dev_lock(hdev);
85 for (p = 0; p < HCI_MAX_PAGES && p <= hdev->max_page; p++) {
86 seq_printf(f, "%2u: 0x%2.2x 0x%2.2x 0x%2.2x 0x%2.2x "
87 "0x%2.2x 0x%2.2x 0x%2.2x 0x%2.2x\n", p,
88 hdev->features[p][0], hdev->features[p][1],
89 hdev->features[p][2], hdev->features[p][3],
90 hdev->features[p][4], hdev->features[p][5],
91 hdev->features[p][6], hdev->features[p][7]);
92 }
93 if (lmp_le_capable(hdev))
94 seq_printf(f, "LE: 0x%2.2x 0x%2.2x 0x%2.2x 0x%2.2x "
95 "0x%2.2x 0x%2.2x 0x%2.2x 0x%2.2x\n",
96 hdev->le_features[0], hdev->le_features[1],
97 hdev->le_features[2], hdev->le_features[3],
98 hdev->le_features[4], hdev->le_features[5],
99 hdev->le_features[6], hdev->le_features[7]);
100 hci_dev_unlock(hdev);
101
102 return 0;
103}
104
105static int features_open(struct inode *inode, struct file *file)
106{
107 return single_open(file, features_show, inode->i_private);
108}
109
110static const struct file_operations features_fops = {
111 .open = features_open,
112 .read = seq_read,
113 .llseek = seq_lseek,
114 .release = single_release,
115};
116
117static int device_id_show(struct seq_file *f, void *ptr)
118{
119 struct hci_dev *hdev = f->private;
120
121 hci_dev_lock(hdev);
122 seq_printf(f, "%4.4x:%4.4x:%4.4x:%4.4x\n", hdev->devid_source,
123 hdev->devid_vendor, hdev->devid_product, hdev->devid_version);
124 hci_dev_unlock(hdev);
125
126 return 0;
127}
128
129static int device_id_open(struct inode *inode, struct file *file)
130{
131 return single_open(file, device_id_show, inode->i_private);
132}
133
134static const struct file_operations device_id_fops = {
135 .open = device_id_open,
136 .read = seq_read,
137 .llseek = seq_lseek,
138 .release = single_release,
139};
140
141static int device_list_show(struct seq_file *f, void *ptr)
142{
143 struct hci_dev *hdev = f->private;
144 struct hci_conn_params *p;
145 struct bdaddr_list *b;
146
147 hci_dev_lock(hdev);
148 list_for_each_entry(b, &hdev->whitelist, list)
149 seq_printf(f, "%pMR (type %u)\n", &b->bdaddr, b->bdaddr_type);
150 list_for_each_entry(p, &hdev->le_conn_params, list) {
151 seq_printf(f, "%pMR (type %u) %u\n", &p->addr, p->addr_type,
152 p->auto_connect);
153 }
154 hci_dev_unlock(hdev);
155
156 return 0;
157}
158
159static int device_list_open(struct inode *inode, struct file *file)
160{
161 return single_open(file, device_list_show, inode->i_private);
162}
163
164static const struct file_operations device_list_fops = {
165 .open = device_list_open,
166 .read = seq_read,
167 .llseek = seq_lseek,
168 .release = single_release,
169};
170
171static int blacklist_show(struct seq_file *f, void *p)
172{
173 struct hci_dev *hdev = f->private;
174 struct bdaddr_list *b;
175
176 hci_dev_lock(hdev);
177 list_for_each_entry(b, &hdev->blacklist, list)
178 seq_printf(f, "%pMR (type %u)\n", &b->bdaddr, b->bdaddr_type);
179 hci_dev_unlock(hdev);
180
181 return 0;
182}
183
184static int blacklist_open(struct inode *inode, struct file *file)
185{
186 return single_open(file, blacklist_show, inode->i_private);
187}
188
189static const struct file_operations blacklist_fops = {
190 .open = blacklist_open,
191 .read = seq_read,
192 .llseek = seq_lseek,
193 .release = single_release,
194};
195
196static int uuids_show(struct seq_file *f, void *p)
197{
198 struct hci_dev *hdev = f->private;
199 struct bt_uuid *uuid;
200
201 hci_dev_lock(hdev);
202 list_for_each_entry(uuid, &hdev->uuids, list) {
203 u8 i, val[16];
204
205 /* The Bluetooth UUID values are stored in big endian,
206 * but with reversed byte order. So convert them into
207 * the right order for the %pUb modifier.
208 */
209 for (i = 0; i < 16; i++)
210 val[i] = uuid->uuid[15 - i];
211
212 seq_printf(f, "%pUb\n", val);
213 }
214 hci_dev_unlock(hdev);
215
216 return 0;
217}
218
219static int uuids_open(struct inode *inode, struct file *file)
220{
221 return single_open(file, uuids_show, inode->i_private);
222}
223
224static const struct file_operations uuids_fops = {
225 .open = uuids_open,
226 .read = seq_read,
227 .llseek = seq_lseek,
228 .release = single_release,
229};
230
231static int remote_oob_show(struct seq_file *f, void *ptr)
232{
233 struct hci_dev *hdev = f->private;
234 struct oob_data *data;
235
236 hci_dev_lock(hdev);
237 list_for_each_entry(data, &hdev->remote_oob_data, list) {
238 seq_printf(f, "%pMR (type %u) %u %*phN %*phN %*phN %*phN\n",
239 &data->bdaddr, data->bdaddr_type, data->present,
240 16, data->hash192, 16, data->rand192,
241 16, data->hash256, 16, data->rand256);
242 }
243 hci_dev_unlock(hdev);
244
245 return 0;
246}
247
248static int remote_oob_open(struct inode *inode, struct file *file)
249{
250 return single_open(file, remote_oob_show, inode->i_private);
251}
252
253static const struct file_operations remote_oob_fops = {
254 .open = remote_oob_open,
255 .read = seq_read,
256 .llseek = seq_lseek,
257 .release = single_release,
258};
259
260static int conn_info_min_age_set(void *data, u64 val)
261{
262 struct hci_dev *hdev = data;
263
264 if (val == 0 || val > hdev->conn_info_max_age)
265 return -EINVAL;
266
267 hci_dev_lock(hdev);
268 hdev->conn_info_min_age = val;
269 hci_dev_unlock(hdev);
270
271 return 0;
272}
273
274static int conn_info_min_age_get(void *data, u64 *val)
275{
276 struct hci_dev *hdev = data;
277
278 hci_dev_lock(hdev);
279 *val = hdev->conn_info_min_age;
280 hci_dev_unlock(hdev);
281
282 return 0;
283}
284
285DEFINE_SIMPLE_ATTRIBUTE(conn_info_min_age_fops, conn_info_min_age_get,
286 conn_info_min_age_set, "%llu\n");
287
288static int conn_info_max_age_set(void *data, u64 val)
289{
290 struct hci_dev *hdev = data;
291
292 if (val == 0 || val < hdev->conn_info_min_age)
293 return -EINVAL;
294
295 hci_dev_lock(hdev);
296 hdev->conn_info_max_age = val;
297 hci_dev_unlock(hdev);
298
299 return 0;
300}
301
302static int conn_info_max_age_get(void *data, u64 *val)
303{
304 struct hci_dev *hdev = data;
305
306 hci_dev_lock(hdev);
307 *val = hdev->conn_info_max_age;
308 hci_dev_unlock(hdev);
309
310 return 0;
311}
312
313DEFINE_SIMPLE_ATTRIBUTE(conn_info_max_age_fops, conn_info_max_age_get,
314 conn_info_max_age_set, "%llu\n");
315
316static ssize_t use_debug_keys_read(struct file *file, char __user *user_buf,
317 size_t count, loff_t *ppos)
318{
319 struct hci_dev *hdev = file->private_data;
320 char buf[3];
321
322 buf[0] = hci_dev_test_flag(hdev, HCI_USE_DEBUG_KEYS) ? 'Y': 'N';
323 buf[1] = '\n';
324 buf[2] = '\0';
325 return simple_read_from_buffer(user_buf, count, ppos, buf, 2);
326}
327
328static const struct file_operations use_debug_keys_fops = {
329 .open = simple_open,
330 .read = use_debug_keys_read,
331 .llseek = default_llseek,
332};
333
334static ssize_t sc_only_mode_read(struct file *file, char __user *user_buf,
335 size_t count, loff_t *ppos)
336{
337 struct hci_dev *hdev = file->private_data;
338 char buf[3];
339
340 buf[0] = hci_dev_test_flag(hdev, HCI_SC_ONLY) ? 'Y': 'N';
341 buf[1] = '\n';
342 buf[2] = '\0';
343 return simple_read_from_buffer(user_buf, count, ppos, buf, 2);
344}
345
346static const struct file_operations sc_only_mode_fops = {
347 .open = simple_open,
348 .read = sc_only_mode_read,
349 .llseek = default_llseek,
350};
351
352void hci_debugfs_create_common(struct hci_dev *hdev)
353{
354 debugfs_create_file("features", 0444, hdev->debugfs, hdev,
355 &features_fops);
356 debugfs_create_u16("manufacturer", 0444, hdev->debugfs,
357 &hdev->manufacturer);
358 debugfs_create_u8("hci_version", 0444, hdev->debugfs, &hdev->hci_ver);
359 debugfs_create_u16("hci_revision", 0444, hdev->debugfs, &hdev->hci_rev);
360 debugfs_create_u8("hardware_error", 0444, hdev->debugfs,
361 &hdev->hw_error_code);
362 debugfs_create_file("device_id", 0444, hdev->debugfs, hdev,
363 &device_id_fops);
364
365 debugfs_create_file("device_list", 0444, hdev->debugfs, hdev,
366 &device_list_fops);
367 debugfs_create_file("blacklist", 0444, hdev->debugfs, hdev,
368 &blacklist_fops);
369 debugfs_create_file("uuids", 0444, hdev->debugfs, hdev, &uuids_fops);
370 debugfs_create_file("remote_oob", 0400, hdev->debugfs, hdev,
371 &remote_oob_fops);
372
373 debugfs_create_file("conn_info_min_age", 0644, hdev->debugfs, hdev,
374 &conn_info_min_age_fops);
375 debugfs_create_file("conn_info_max_age", 0644, hdev->debugfs, hdev,
376 &conn_info_max_age_fops);
377
378 if (lmp_ssp_capable(hdev) || lmp_le_capable(hdev))
379 debugfs_create_file("use_debug_keys", 0444, hdev->debugfs,
380 hdev, &use_debug_keys_fops);
381
382 if (lmp_sc_capable(hdev) || lmp_le_capable(hdev))
383 debugfs_create_file("sc_only_mode", 0444, hdev->debugfs,
384 hdev, &sc_only_mode_fops);
385}
386
387static int inquiry_cache_show(struct seq_file *f, void *p)
388{
389 struct hci_dev *hdev = f->private;
390 struct discovery_state *cache = &hdev->discovery;
391 struct inquiry_entry *e;
392
393 hci_dev_lock(hdev);
394
395 list_for_each_entry(e, &cache->all, all) {
396 struct inquiry_data *data = &e->data;
397 seq_printf(f, "%pMR %d %d %d 0x%.2x%.2x%.2x 0x%.4x %d %d %u\n",
398 &data->bdaddr,
399 data->pscan_rep_mode, data->pscan_period_mode,
400 data->pscan_mode, data->dev_class[2],
401 data->dev_class[1], data->dev_class[0],
402 __le16_to_cpu(data->clock_offset),
403 data->rssi, data->ssp_mode, e->timestamp);
404 }
405
406 hci_dev_unlock(hdev);
407
408 return 0;
409}
410
411static int inquiry_cache_open(struct inode *inode, struct file *file)
412{
413 return single_open(file, inquiry_cache_show, inode->i_private);
414}
415
416static const struct file_operations inquiry_cache_fops = {
417 .open = inquiry_cache_open,
418 .read = seq_read,
419 .llseek = seq_lseek,
420 .release = single_release,
421};
422
423static int link_keys_show(struct seq_file *f, void *ptr)
424{
425 struct hci_dev *hdev = f->private;
426 struct link_key *key;
427
428 rcu_read_lock();
429 list_for_each_entry_rcu(key, &hdev->link_keys, list)
430 seq_printf(f, "%pMR %u %*phN %u\n", &key->bdaddr, key->type,
431 HCI_LINK_KEY_SIZE, key->val, key->pin_len);
432 rcu_read_unlock();
433
434 return 0;
435}
436
437static int link_keys_open(struct inode *inode, struct file *file)
438{
439 return single_open(file, link_keys_show, inode->i_private);
440}
441
442static const struct file_operations link_keys_fops = {
443 .open = link_keys_open,
444 .read = seq_read,
445 .llseek = seq_lseek,
446 .release = single_release,
447};
448
449static int dev_class_show(struct seq_file *f, void *ptr)
450{
451 struct hci_dev *hdev = f->private;
452
453 hci_dev_lock(hdev);
454 seq_printf(f, "0x%.2x%.2x%.2x\n", hdev->dev_class[2],
455 hdev->dev_class[1], hdev->dev_class[0]);
456 hci_dev_unlock(hdev);
457
458 return 0;
459}
460
461static int dev_class_open(struct inode *inode, struct file *file)
462{
463 return single_open(file, dev_class_show, inode->i_private);
464}
465
466static const struct file_operations dev_class_fops = {
467 .open = dev_class_open,
468 .read = seq_read,
469 .llseek = seq_lseek,
470 .release = single_release,
471};
472
473static int voice_setting_get(void *data, u64 *val)
474{
475 struct hci_dev *hdev = data;
476
477 hci_dev_lock(hdev);
478 *val = hdev->voice_setting;
479 hci_dev_unlock(hdev);
480
481 return 0;
482}
483
484DEFINE_SIMPLE_ATTRIBUTE(voice_setting_fops, voice_setting_get,
485 NULL, "0x%4.4llx\n");
486
487static ssize_t ssp_debug_mode_read(struct file *file, char __user *user_buf,
488 size_t count, loff_t *ppos)
489{
490 struct hci_dev *hdev = file->private_data;
491 char buf[3];
492
493 buf[0] = hdev->ssp_debug_mode ? 'Y': 'N';
494 buf[1] = '\n';
495 buf[2] = '\0';
496 return simple_read_from_buffer(user_buf, count, ppos, buf, 2);
497}
498
499static const struct file_operations ssp_debug_mode_fops = {
500 .open = simple_open,
501 .read = ssp_debug_mode_read,
502 .llseek = default_llseek,
503};
504
505static int auto_accept_delay_set(void *data, u64 val)
506{
507 struct hci_dev *hdev = data;
508
509 hci_dev_lock(hdev);
510 hdev->auto_accept_delay = val;
511 hci_dev_unlock(hdev);
512
513 return 0;
514}
515
516static int auto_accept_delay_get(void *data, u64 *val)
517{
518 struct hci_dev *hdev = data;
519
520 hci_dev_lock(hdev);
521 *val = hdev->auto_accept_delay;
522 hci_dev_unlock(hdev);
523
524 return 0;
525}
526
527DEFINE_SIMPLE_ATTRIBUTE(auto_accept_delay_fops, auto_accept_delay_get,
528 auto_accept_delay_set, "%llu\n");
529
530static int idle_timeout_set(void *data, u64 val)
531{
532 struct hci_dev *hdev = data;
533
534 if (val != 0 && (val < 500 || val > 3600000))
535 return -EINVAL;
536
537 hci_dev_lock(hdev);
538 hdev->idle_timeout = val;
539 hci_dev_unlock(hdev);
540
541 return 0;
542}
543
544static int idle_timeout_get(void *data, u64 *val)
545{
546 struct hci_dev *hdev = data;
547
548 hci_dev_lock(hdev);
549 *val = hdev->idle_timeout;
550 hci_dev_unlock(hdev);
551
552 return 0;
553}
554
555DEFINE_SIMPLE_ATTRIBUTE(idle_timeout_fops, idle_timeout_get,
556 idle_timeout_set, "%llu\n");
557
558static int sniff_min_interval_set(void *data, u64 val)
559{
560 struct hci_dev *hdev = data;
561
562 if (val == 0 || val % 2 || val > hdev->sniff_max_interval)
563 return -EINVAL;
564
565 hci_dev_lock(hdev);
566 hdev->sniff_min_interval = val;
567 hci_dev_unlock(hdev);
568
569 return 0;
570}
571
572static int sniff_min_interval_get(void *data, u64 *val)
573{
574 struct hci_dev *hdev = data;
575
576 hci_dev_lock(hdev);
577 *val = hdev->sniff_min_interval;
578 hci_dev_unlock(hdev);
579
580 return 0;
581}
582
583DEFINE_SIMPLE_ATTRIBUTE(sniff_min_interval_fops, sniff_min_interval_get,
584 sniff_min_interval_set, "%llu\n");
585
586static int sniff_max_interval_set(void *data, u64 val)
587{
588 struct hci_dev *hdev = data;
589
590 if (val == 0 || val % 2 || val < hdev->sniff_min_interval)
591 return -EINVAL;
592
593 hci_dev_lock(hdev);
594 hdev->sniff_max_interval = val;
595 hci_dev_unlock(hdev);
596
597 return 0;
598}
599
600static int sniff_max_interval_get(void *data, u64 *val)
601{
602 struct hci_dev *hdev = data;
603
604 hci_dev_lock(hdev);
605 *val = hdev->sniff_max_interval;
606 hci_dev_unlock(hdev);
607
608 return 0;
609}
610
611DEFINE_SIMPLE_ATTRIBUTE(sniff_max_interval_fops, sniff_max_interval_get,
612 sniff_max_interval_set, "%llu\n");
613
614void hci_debugfs_create_bredr(struct hci_dev *hdev)
615{
616 debugfs_create_file("inquiry_cache", 0444, hdev->debugfs, hdev,
617 &inquiry_cache_fops);
618 debugfs_create_file("link_keys", 0400, hdev->debugfs, hdev,
619 &link_keys_fops);
620 debugfs_create_file("dev_class", 0444, hdev->debugfs, hdev,
621 &dev_class_fops);
622 debugfs_create_file("voice_setting", 0444, hdev->debugfs, hdev,
623 &voice_setting_fops);
624
625 if (lmp_ssp_capable(hdev)) {
626 debugfs_create_file("ssp_debug_mode", 0444, hdev->debugfs,
627 hdev, &ssp_debug_mode_fops);
628 debugfs_create_file("auto_accept_delay", 0644, hdev->debugfs,
629 hdev, &auto_accept_delay_fops);
630 }
631
632 if (lmp_sniff_capable(hdev)) {
633 debugfs_create_file("idle_timeout", 0644, hdev->debugfs,
634 hdev, &idle_timeout_fops);
635 debugfs_create_file("sniff_min_interval", 0644, hdev->debugfs,
636 hdev, &sniff_min_interval_fops);
637 debugfs_create_file("sniff_max_interval", 0644, hdev->debugfs,
638 hdev, &sniff_max_interval_fops);
639 }
640}
641
642static int identity_show(struct seq_file *f, void *p)
643{
644 struct hci_dev *hdev = f->private;
645 bdaddr_t addr;
646 u8 addr_type;
647
648 hci_dev_lock(hdev);
649
650 hci_copy_identity_address(hdev, &addr, &addr_type);
651
652 seq_printf(f, "%pMR (type %u) %*phN %pMR\n", &addr, addr_type,
653 16, hdev->irk, &hdev->rpa);
654
655 hci_dev_unlock(hdev);
656
657 return 0;
658}
659
660static int identity_open(struct inode *inode, struct file *file)
661{
662 return single_open(file, identity_show, inode->i_private);
663}
664
665static const struct file_operations identity_fops = {
666 .open = identity_open,
667 .read = seq_read,
668 .llseek = seq_lseek,
669 .release = single_release,
670};
671
672static int rpa_timeout_set(void *data, u64 val)
673{
674 struct hci_dev *hdev = data;
675
676 /* Require the RPA timeout to be at least 30 seconds and at most
677 * 24 hours.
678 */
679 if (val < 30 || val > (60 * 60 * 24))
680 return -EINVAL;
681
682 hci_dev_lock(hdev);
683 hdev->rpa_timeout = val;
684 hci_dev_unlock(hdev);
685
686 return 0;
687}
688
689static int rpa_timeout_get(void *data, u64 *val)
690{
691 struct hci_dev *hdev = data;
692
693 hci_dev_lock(hdev);
694 *val = hdev->rpa_timeout;
695 hci_dev_unlock(hdev);
696
697 return 0;
698}
699
700DEFINE_SIMPLE_ATTRIBUTE(rpa_timeout_fops, rpa_timeout_get,
701 rpa_timeout_set, "%llu\n");
702
703static int random_address_show(struct seq_file *f, void *p)
704{
705 struct hci_dev *hdev = f->private;
706
707 hci_dev_lock(hdev);
708 seq_printf(f, "%pMR\n", &hdev->random_addr);
709 hci_dev_unlock(hdev);
710
711 return 0;
712}
713
714static int random_address_open(struct inode *inode, struct file *file)
715{
716 return single_open(file, random_address_show, inode->i_private);
717}
718
719static const struct file_operations random_address_fops = {
720 .open = random_address_open,
721 .read = seq_read,
722 .llseek = seq_lseek,
723 .release = single_release,
724};
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
737static int static_address_open(struct inode *inode, struct file *file)
738{
739 return single_open(file, static_address_show, inode->i_private);
740}
741
742static const struct file_operations static_address_fops = {
743 .open = static_address_open,
744 .read = seq_read,
745 .llseek = seq_lseek,
746 .release = single_release,
747};
748
749static ssize_t force_static_address_read(struct file *file,
750 char __user *user_buf,
751 size_t count, loff_t *ppos)
752{
753 struct hci_dev *hdev = file->private_data;
754 char buf[3];
755
756 buf[0] = hci_dev_test_flag(hdev, HCI_FORCE_STATIC_ADDR) ? 'Y': 'N';
757 buf[1] = '\n';
758 buf[2] = '\0';
759 return simple_read_from_buffer(user_buf, count, ppos, buf, 2);
760}
761
762static ssize_t force_static_address_write(struct file *file,
763 const char __user *user_buf,
764 size_t count, loff_t *ppos)
765{
766 struct hci_dev *hdev = file->private_data;
767 char buf[32];
768 size_t buf_size = min(count, (sizeof(buf)-1));
769 bool enable;
770
771 if (test_bit(HCI_UP, &hdev->flags))
772 return -EBUSY;
773
774 if (copy_from_user(buf, user_buf, buf_size))
775 return -EFAULT;
776
777 buf[buf_size] = '\0';
778 if (strtobool(buf, &enable))
779 return -EINVAL;
780
781 if (enable == hci_dev_test_flag(hdev, HCI_FORCE_STATIC_ADDR))
782 return -EALREADY;
783
784 hci_dev_change_flag(hdev, HCI_FORCE_STATIC_ADDR);
785
786 return count;
787}
788
789static const struct file_operations force_static_address_fops = {
790 .open = simple_open,
791 .read = force_static_address_read,
792 .write = force_static_address_write,
793 .llseek = default_llseek,
794};
795
796static int white_list_show(struct seq_file *f, void *ptr)
797{
798 struct hci_dev *hdev = f->private;
799 struct bdaddr_list *b;
800
801 hci_dev_lock(hdev);
802 list_for_each_entry(b, &hdev->le_white_list, list)
803 seq_printf(f, "%pMR (type %u)\n", &b->bdaddr, b->bdaddr_type);
804 hci_dev_unlock(hdev);
805
806 return 0;
807}
808
809static int white_list_open(struct inode *inode, struct file *file)
810{
811 return single_open(file, white_list_show, inode->i_private);
812}
813
814static const struct file_operations white_list_fops = {
815 .open = white_list_open,
816 .read = seq_read,
817 .llseek = seq_lseek,
818 .release = single_release,
819};
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
837static int identity_resolving_keys_open(struct inode *inode, struct file *file)
838{
839 return single_open(file, identity_resolving_keys_show,
840 inode->i_private);
841}
842
843static const struct file_operations identity_resolving_keys_fops = {
844 .open = identity_resolving_keys_open,
845 .read = seq_read,
846 .llseek = seq_lseek,
847 .release = single_release,
848};
849
850static int long_term_keys_show(struct seq_file *f, void *ptr)
851{
852 struct hci_dev *hdev = f->private;
853 struct smp_ltk *ltk;
854
855 rcu_read_lock();
856 list_for_each_entry_rcu(ltk, &hdev->long_term_keys, list)
857 seq_printf(f, "%pMR (type %u) %u 0x%02x %u %.4x %.16llx %*phN\n",
858 <k->bdaddr, ltk->bdaddr_type, ltk->authenticated,
859 ltk->type, ltk->enc_size, __le16_to_cpu(ltk->ediv),
860 __le64_to_cpu(ltk->rand), 16, ltk->val);
861 rcu_read_unlock();
862
863 return 0;
864}
865
866static int long_term_keys_open(struct inode *inode, struct file *file)
867{
868 return single_open(file, long_term_keys_show, inode->i_private);
869}
870
871static const struct file_operations long_term_keys_fops = {
872 .open = long_term_keys_open,
873 .read = seq_read,
874 .llseek = seq_lseek,
875 .release = single_release,
876};
877
878static int conn_min_interval_set(void *data, u64 val)
879{
880 struct hci_dev *hdev = data;
881
882 if (val < 0x0006 || val > 0x0c80 || val > hdev->le_conn_max_interval)
883 return -EINVAL;
884
885 hci_dev_lock(hdev);
886 hdev->le_conn_min_interval = val;
887 hci_dev_unlock(hdev);
888
889 return 0;
890}
891
892static int conn_min_interval_get(void *data, u64 *val)
893{
894 struct hci_dev *hdev = data;
895
896 hci_dev_lock(hdev);
897 *val = hdev->le_conn_min_interval;
898 hci_dev_unlock(hdev);
899
900 return 0;
901}
902
903DEFINE_SIMPLE_ATTRIBUTE(conn_min_interval_fops, conn_min_interval_get,
904 conn_min_interval_set, "%llu\n");
905
906static int conn_max_interval_set(void *data, u64 val)
907{
908 struct hci_dev *hdev = data;
909
910 if (val < 0x0006 || val > 0x0c80 || val < hdev->le_conn_min_interval)
911 return -EINVAL;
912
913 hci_dev_lock(hdev);
914 hdev->le_conn_max_interval = val;
915 hci_dev_unlock(hdev);
916
917 return 0;
918}
919
920static int conn_max_interval_get(void *data, u64 *val)
921{
922 struct hci_dev *hdev = data;
923
924 hci_dev_lock(hdev);
925 *val = hdev->le_conn_max_interval;
926 hci_dev_unlock(hdev);
927
928 return 0;
929}
930
931DEFINE_SIMPLE_ATTRIBUTE(conn_max_interval_fops, conn_max_interval_get,
932 conn_max_interval_set, "%llu\n");
933
934static int conn_latency_set(void *data, u64 val)
935{
936 struct hci_dev *hdev = data;
937
938 if (val > 0x01f3)
939 return -EINVAL;
940
941 hci_dev_lock(hdev);
942 hdev->le_conn_latency = val;
943 hci_dev_unlock(hdev);
944
945 return 0;
946}
947
948static int conn_latency_get(void *data, u64 *val)
949{
950 struct hci_dev *hdev = data;
951
952 hci_dev_lock(hdev);
953 *val = hdev->le_conn_latency;
954 hci_dev_unlock(hdev);
955
956 return 0;
957}
958
959DEFINE_SIMPLE_ATTRIBUTE(conn_latency_fops, conn_latency_get,
960 conn_latency_set, "%llu\n");
961
962static int supervision_timeout_set(void *data, u64 val)
963{
964 struct hci_dev *hdev = data;
965
966 if (val < 0x000a || val > 0x0c80)
967 return -EINVAL;
968
969 hci_dev_lock(hdev);
970 hdev->le_supv_timeout = val;
971 hci_dev_unlock(hdev);
972
973 return 0;
974}
975
976static int supervision_timeout_get(void *data, u64 *val)
977{
978 struct hci_dev *hdev = data;
979
980 hci_dev_lock(hdev);
981 *val = hdev->le_supv_timeout;
982 hci_dev_unlock(hdev);
983
984 return 0;
985}
986
987DEFINE_SIMPLE_ATTRIBUTE(supervision_timeout_fops, supervision_timeout_get,
988 supervision_timeout_set, "%llu\n");
989
990static int adv_channel_map_set(void *data, u64 val)
991{
992 struct hci_dev *hdev = data;
993
994 if (val < 0x01 || val > 0x07)
995 return -EINVAL;
996
997 hci_dev_lock(hdev);
998 hdev->le_adv_channel_map = val;
999 hci_dev_unlock(hdev);
1000
1001 return 0;
1002}
1003
1004static int adv_channel_map_get(void *data, u64 *val)
1005{
1006 struct hci_dev *hdev = data;
1007
1008 hci_dev_lock(hdev);
1009 *val = hdev->le_adv_channel_map;
1010 hci_dev_unlock(hdev);
1011
1012 return 0;
1013}
1014
1015DEFINE_SIMPLE_ATTRIBUTE(adv_channel_map_fops, adv_channel_map_get,
1016 adv_channel_map_set, "%llu\n");
1017
1018static int adv_min_interval_set(void *data, u64 val)
1019{
1020 struct hci_dev *hdev = data;
1021
1022 if (val < 0x0020 || val > 0x4000 || val > hdev->le_adv_max_interval)
1023 return -EINVAL;
1024
1025 hci_dev_lock(hdev);
1026 hdev->le_adv_min_interval = val;
1027 hci_dev_unlock(hdev);
1028
1029 return 0;
1030}
1031
1032static int adv_min_interval_get(void *data, u64 *val)
1033{
1034 struct hci_dev *hdev = data;
1035
1036 hci_dev_lock(hdev);
1037 *val = hdev->le_adv_min_interval;
1038 hci_dev_unlock(hdev);
1039
1040 return 0;
1041}
1042
1043DEFINE_SIMPLE_ATTRIBUTE(adv_min_interval_fops, adv_min_interval_get,
1044 adv_min_interval_set, "%llu\n");
1045
1046static int adv_max_interval_set(void *data, u64 val)
1047{
1048 struct hci_dev *hdev = data;
1049
1050 if (val < 0x0020 || val > 0x4000 || val < hdev->le_adv_min_interval)
1051 return -EINVAL;
1052
1053 hci_dev_lock(hdev);
1054 hdev->le_adv_max_interval = val;
1055 hci_dev_unlock(hdev);
1056
1057 return 0;
1058}
1059
1060static int adv_max_interval_get(void *data, u64 *val)
1061{
1062 struct hci_dev *hdev = data;
1063
1064 hci_dev_lock(hdev);
1065 *val = hdev->le_adv_max_interval;
1066 hci_dev_unlock(hdev);
1067
1068 return 0;
1069}
1070
1071DEFINE_SIMPLE_ATTRIBUTE(adv_max_interval_fops, adv_max_interval_get,
1072 adv_max_interval_set, "%llu\n");
1073
1074DEFINE_QUIRK_ATTRIBUTE(quirk_strict_duplicate_filter,
1075 HCI_QUIRK_STRICT_DUPLICATE_FILTER);
1076DEFINE_QUIRK_ATTRIBUTE(quirk_simultaneous_discovery,
1077 HCI_QUIRK_SIMULTANEOUS_DISCOVERY);
1078
1079void hci_debugfs_create_le(struct hci_dev *hdev)
1080{
1081 debugfs_create_file("identity", 0400, hdev->debugfs, hdev,
1082 &identity_fops);
1083 debugfs_create_file("rpa_timeout", 0644, hdev->debugfs, hdev,
1084 &rpa_timeout_fops);
1085 debugfs_create_file("random_address", 0444, hdev->debugfs, hdev,
1086 &random_address_fops);
1087 debugfs_create_file("static_address", 0444, hdev->debugfs, hdev,
1088 &static_address_fops);
1089
1090 /* For controllers with a public address, provide a debug
1091 * option to force the usage of the configured static
1092 * address. By default the public address is used.
1093 */
1094 if (bacmp(&hdev->bdaddr, BDADDR_ANY))
1095 debugfs_create_file("force_static_address", 0644,
1096 hdev->debugfs, hdev,
1097 &force_static_address_fops);
1098
1099 debugfs_create_u8("white_list_size", 0444, hdev->debugfs,
1100 &hdev->le_white_list_size);
1101 debugfs_create_file("white_list", 0444, hdev->debugfs, hdev,
1102 &white_list_fops);
1103 debugfs_create_file("identity_resolving_keys", 0400, hdev->debugfs,
1104 hdev, &identity_resolving_keys_fops);
1105 debugfs_create_file("long_term_keys", 0400, hdev->debugfs, hdev,
1106 &long_term_keys_fops);
1107 debugfs_create_file("conn_min_interval", 0644, hdev->debugfs, hdev,
1108 &conn_min_interval_fops);
1109 debugfs_create_file("conn_max_interval", 0644, hdev->debugfs, hdev,
1110 &conn_max_interval_fops);
1111 debugfs_create_file("conn_latency", 0644, hdev->debugfs, hdev,
1112 &conn_latency_fops);
1113 debugfs_create_file("supervision_timeout", 0644, hdev->debugfs, hdev,
1114 &supervision_timeout_fops);
1115 debugfs_create_file("adv_channel_map", 0644, hdev->debugfs, hdev,
1116 &adv_channel_map_fops);
1117 debugfs_create_file("adv_min_interval", 0644, hdev->debugfs, hdev,
1118 &adv_min_interval_fops);
1119 debugfs_create_file("adv_max_interval", 0644, hdev->debugfs, hdev,
1120 &adv_max_interval_fops);
1121 debugfs_create_u16("discov_interleaved_timeout", 0644, hdev->debugfs,
1122 &hdev->discov_interleaved_timeout);
1123
1124 debugfs_create_file("quirk_strict_duplicate_filter", 0644,
1125 hdev->debugfs, hdev,
1126 &quirk_strict_duplicate_filter_fops);
1127 debugfs_create_file("quirk_simultaneous_discovery", 0644,
1128 hdev->debugfs, hdev,
1129 &quirk_simultaneous_discovery_fops);
1130}
1131
1132void hci_debugfs_create_conn(struct hci_conn *conn)
1133{
1134 struct hci_dev *hdev = conn->hdev;
1135 char name[6];
1136
1137 if (IS_ERR_OR_NULL(hdev->debugfs))
1138 return;
1139
1140 snprintf(name, sizeof(name), "%u", conn->handle);
1141 conn->debugfs = debugfs_create_dir(name, hdev->debugfs);
1142}
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 "hci_debugfs.h"
30
31#define DEFINE_QUIRK_ATTRIBUTE(__name, __quirk) \
32static ssize_t __name ## _read(struct file *file, \
33 char __user *user_buf, \
34 size_t count, loff_t *ppos) \
35{ \
36 struct hci_dev *hdev = file->private_data; \
37 char buf[3]; \
38 \
39 buf[0] = test_bit(__quirk, &hdev->quirks) ? 'Y' : 'N'; \
40 buf[1] = '\n'; \
41 buf[2] = '\0'; \
42 return simple_read_from_buffer(user_buf, count, ppos, buf, 2); \
43} \
44 \
45static ssize_t __name ## _write(struct file *file, \
46 const char __user *user_buf, \
47 size_t count, loff_t *ppos) \
48{ \
49 struct hci_dev *hdev = file->private_data; \
50 char buf[32]; \
51 size_t buf_size = min(count, (sizeof(buf) - 1)); \
52 bool enable; \
53 \
54 if (test_bit(HCI_UP, &hdev->flags)) \
55 return -EBUSY; \
56 \
57 if (copy_from_user(buf, user_buf, buf_size)) \
58 return -EFAULT; \
59 \
60 buf[buf_size] = '\0'; \
61 if (strtobool(buf, &enable)) \
62 return -EINVAL; \
63 \
64 if (enable == test_bit(__quirk, &hdev->quirks)) \
65 return -EALREADY; \
66 \
67 change_bit(__quirk, &hdev->quirks); \
68 \
69 return count; \
70} \
71 \
72static const struct file_operations __name ## _fops = { \
73 .open = simple_open, \
74 .read = __name ## _read, \
75 .write = __name ## _write, \
76 .llseek = default_llseek, \
77} \
78
79#define DEFINE_INFO_ATTRIBUTE(__name, __field) \
80static int __name ## _show(struct seq_file *f, void *ptr) \
81{ \
82 struct hci_dev *hdev = f->private; \
83 \
84 hci_dev_lock(hdev); \
85 seq_printf(f, "%s\n", hdev->__field ? : ""); \
86 hci_dev_unlock(hdev); \
87 \
88 return 0; \
89} \
90 \
91DEFINE_SHOW_ATTRIBUTE(__name)
92
93static int features_show(struct seq_file *f, void *ptr)
94{
95 struct hci_dev *hdev = f->private;
96 u8 p;
97
98 hci_dev_lock(hdev);
99 for (p = 0; p < HCI_MAX_PAGES && p <= hdev->max_page; p++)
100 seq_printf(f, "%2u: %8ph\n", p, hdev->features[p]);
101 if (lmp_le_capable(hdev))
102 seq_printf(f, "LE: %8ph\n", hdev->le_features);
103 hci_dev_unlock(hdev);
104
105 return 0;
106}
107
108DEFINE_SHOW_ATTRIBUTE(features);
109
110static int device_id_show(struct seq_file *f, void *ptr)
111{
112 struct hci_dev *hdev = f->private;
113
114 hci_dev_lock(hdev);
115 seq_printf(f, "%4.4x:%4.4x:%4.4x:%4.4x\n", hdev->devid_source,
116 hdev->devid_vendor, hdev->devid_product, hdev->devid_version);
117 hci_dev_unlock(hdev);
118
119 return 0;
120}
121
122DEFINE_SHOW_ATTRIBUTE(device_id);
123
124static int device_list_show(struct seq_file *f, void *ptr)
125{
126 struct hci_dev *hdev = f->private;
127 struct hci_conn_params *p;
128 struct bdaddr_list *b;
129
130 hci_dev_lock(hdev);
131 list_for_each_entry(b, &hdev->whitelist, list)
132 seq_printf(f, "%pMR (type %u)\n", &b->bdaddr, b->bdaddr_type);
133 list_for_each_entry(p, &hdev->le_conn_params, list) {
134 seq_printf(f, "%pMR (type %u) %u\n", &p->addr, p->addr_type,
135 p->auto_connect);
136 }
137 hci_dev_unlock(hdev);
138
139 return 0;
140}
141
142DEFINE_SHOW_ATTRIBUTE(device_list);
143
144static int blacklist_show(struct seq_file *f, void *p)
145{
146 struct hci_dev *hdev = f->private;
147 struct bdaddr_list *b;
148
149 hci_dev_lock(hdev);
150 list_for_each_entry(b, &hdev->blacklist, list)
151 seq_printf(f, "%pMR (type %u)\n", &b->bdaddr, b->bdaddr_type);
152 hci_dev_unlock(hdev);
153
154 return 0;
155}
156
157DEFINE_SHOW_ATTRIBUTE(blacklist);
158
159static int uuids_show(struct seq_file *f, void *p)
160{
161 struct hci_dev *hdev = f->private;
162 struct bt_uuid *uuid;
163
164 hci_dev_lock(hdev);
165 list_for_each_entry(uuid, &hdev->uuids, list) {
166 u8 i, val[16];
167
168 /* The Bluetooth UUID values are stored in big endian,
169 * but with reversed byte order. So convert them into
170 * the right order for the %pUb modifier.
171 */
172 for (i = 0; i < 16; i++)
173 val[i] = uuid->uuid[15 - i];
174
175 seq_printf(f, "%pUb\n", val);
176 }
177 hci_dev_unlock(hdev);
178
179 return 0;
180}
181
182DEFINE_SHOW_ATTRIBUTE(uuids);
183
184static int remote_oob_show(struct seq_file *f, void *ptr)
185{
186 struct hci_dev *hdev = f->private;
187 struct oob_data *data;
188
189 hci_dev_lock(hdev);
190 list_for_each_entry(data, &hdev->remote_oob_data, list) {
191 seq_printf(f, "%pMR (type %u) %u %*phN %*phN %*phN %*phN\n",
192 &data->bdaddr, data->bdaddr_type, data->present,
193 16, data->hash192, 16, data->rand192,
194 16, data->hash256, 16, data->rand256);
195 }
196 hci_dev_unlock(hdev);
197
198 return 0;
199}
200
201DEFINE_SHOW_ATTRIBUTE(remote_oob);
202
203static int conn_info_min_age_set(void *data, u64 val)
204{
205 struct hci_dev *hdev = data;
206
207 if (val == 0 || val > hdev->conn_info_max_age)
208 return -EINVAL;
209
210 hci_dev_lock(hdev);
211 hdev->conn_info_min_age = val;
212 hci_dev_unlock(hdev);
213
214 return 0;
215}
216
217static int conn_info_min_age_get(void *data, u64 *val)
218{
219 struct hci_dev *hdev = data;
220
221 hci_dev_lock(hdev);
222 *val = hdev->conn_info_min_age;
223 hci_dev_unlock(hdev);
224
225 return 0;
226}
227
228DEFINE_SIMPLE_ATTRIBUTE(conn_info_min_age_fops, conn_info_min_age_get,
229 conn_info_min_age_set, "%llu\n");
230
231static int conn_info_max_age_set(void *data, u64 val)
232{
233 struct hci_dev *hdev = data;
234
235 if (val == 0 || val < hdev->conn_info_min_age)
236 return -EINVAL;
237
238 hci_dev_lock(hdev);
239 hdev->conn_info_max_age = val;
240 hci_dev_unlock(hdev);
241
242 return 0;
243}
244
245static int conn_info_max_age_get(void *data, u64 *val)
246{
247 struct hci_dev *hdev = data;
248
249 hci_dev_lock(hdev);
250 *val = hdev->conn_info_max_age;
251 hci_dev_unlock(hdev);
252
253 return 0;
254}
255
256DEFINE_SIMPLE_ATTRIBUTE(conn_info_max_age_fops, conn_info_max_age_get,
257 conn_info_max_age_set, "%llu\n");
258
259static ssize_t use_debug_keys_read(struct file *file, char __user *user_buf,
260 size_t count, loff_t *ppos)
261{
262 struct hci_dev *hdev = file->private_data;
263 char buf[3];
264
265 buf[0] = hci_dev_test_flag(hdev, HCI_USE_DEBUG_KEYS) ? 'Y': 'N';
266 buf[1] = '\n';
267 buf[2] = '\0';
268 return simple_read_from_buffer(user_buf, count, ppos, buf, 2);
269}
270
271static const struct file_operations use_debug_keys_fops = {
272 .open = simple_open,
273 .read = use_debug_keys_read,
274 .llseek = default_llseek,
275};
276
277static ssize_t sc_only_mode_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_SC_ONLY) ? '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 sc_only_mode_fops = {
290 .open = simple_open,
291 .read = sc_only_mode_read,
292 .llseek = default_llseek,
293};
294
295DEFINE_INFO_ATTRIBUTE(hardware_info, hw_info);
296DEFINE_INFO_ATTRIBUTE(firmware_info, fw_info);
297
298void hci_debugfs_create_common(struct hci_dev *hdev)
299{
300 debugfs_create_file("features", 0444, hdev->debugfs, hdev,
301 &features_fops);
302 debugfs_create_u16("manufacturer", 0444, hdev->debugfs,
303 &hdev->manufacturer);
304 debugfs_create_u8("hci_version", 0444, hdev->debugfs, &hdev->hci_ver);
305 debugfs_create_u16("hci_revision", 0444, hdev->debugfs, &hdev->hci_rev);
306 debugfs_create_u8("hardware_error", 0444, hdev->debugfs,
307 &hdev->hw_error_code);
308 debugfs_create_file("device_id", 0444, hdev->debugfs, hdev,
309 &device_id_fops);
310
311 debugfs_create_file("device_list", 0444, hdev->debugfs, hdev,
312 &device_list_fops);
313 debugfs_create_file("blacklist", 0444, hdev->debugfs, hdev,
314 &blacklist_fops);
315 debugfs_create_file("uuids", 0444, hdev->debugfs, hdev, &uuids_fops);
316 debugfs_create_file("remote_oob", 0400, hdev->debugfs, hdev,
317 &remote_oob_fops);
318
319 debugfs_create_file("conn_info_min_age", 0644, hdev->debugfs, hdev,
320 &conn_info_min_age_fops);
321 debugfs_create_file("conn_info_max_age", 0644, hdev->debugfs, hdev,
322 &conn_info_max_age_fops);
323
324 if (lmp_ssp_capable(hdev) || lmp_le_capable(hdev))
325 debugfs_create_file("use_debug_keys", 0444, hdev->debugfs,
326 hdev, &use_debug_keys_fops);
327
328 if (lmp_sc_capable(hdev) || lmp_le_capable(hdev))
329 debugfs_create_file("sc_only_mode", 0444, hdev->debugfs,
330 hdev, &sc_only_mode_fops);
331
332 if (hdev->hw_info)
333 debugfs_create_file("hardware_info", 0444, hdev->debugfs,
334 hdev, &hardware_info_fops);
335
336 if (hdev->fw_info)
337 debugfs_create_file("firmware_info", 0444, hdev->debugfs,
338 hdev, &firmware_info_fops);
339}
340
341static int inquiry_cache_show(struct seq_file *f, void *p)
342{
343 struct hci_dev *hdev = f->private;
344 struct discovery_state *cache = &hdev->discovery;
345 struct inquiry_entry *e;
346
347 hci_dev_lock(hdev);
348
349 list_for_each_entry(e, &cache->all, all) {
350 struct inquiry_data *data = &e->data;
351 seq_printf(f, "%pMR %d %d %d 0x%.2x%.2x%.2x 0x%.4x %d %d %u\n",
352 &data->bdaddr,
353 data->pscan_rep_mode, data->pscan_period_mode,
354 data->pscan_mode, data->dev_class[2],
355 data->dev_class[1], data->dev_class[0],
356 __le16_to_cpu(data->clock_offset),
357 data->rssi, data->ssp_mode, e->timestamp);
358 }
359
360 hci_dev_unlock(hdev);
361
362 return 0;
363}
364
365DEFINE_SHOW_ATTRIBUTE(inquiry_cache);
366
367static int link_keys_show(struct seq_file *f, void *ptr)
368{
369 struct hci_dev *hdev = f->private;
370 struct link_key *key;
371
372 rcu_read_lock();
373 list_for_each_entry_rcu(key, &hdev->link_keys, list)
374 seq_printf(f, "%pMR %u %*phN %u\n", &key->bdaddr, key->type,
375 HCI_LINK_KEY_SIZE, key->val, key->pin_len);
376 rcu_read_unlock();
377
378 return 0;
379}
380
381DEFINE_SHOW_ATTRIBUTE(link_keys);
382
383static int dev_class_show(struct seq_file *f, void *ptr)
384{
385 struct hci_dev *hdev = f->private;
386
387 hci_dev_lock(hdev);
388 seq_printf(f, "0x%.2x%.2x%.2x\n", hdev->dev_class[2],
389 hdev->dev_class[1], hdev->dev_class[0]);
390 hci_dev_unlock(hdev);
391
392 return 0;
393}
394
395DEFINE_SHOW_ATTRIBUTE(dev_class);
396
397static int voice_setting_get(void *data, u64 *val)
398{
399 struct hci_dev *hdev = data;
400
401 hci_dev_lock(hdev);
402 *val = hdev->voice_setting;
403 hci_dev_unlock(hdev);
404
405 return 0;
406}
407
408DEFINE_SIMPLE_ATTRIBUTE(voice_setting_fops, voice_setting_get,
409 NULL, "0x%4.4llx\n");
410
411static ssize_t ssp_debug_mode_read(struct file *file, char __user *user_buf,
412 size_t count, loff_t *ppos)
413{
414 struct hci_dev *hdev = file->private_data;
415 char buf[3];
416
417 buf[0] = hdev->ssp_debug_mode ? 'Y': 'N';
418 buf[1] = '\n';
419 buf[2] = '\0';
420 return simple_read_from_buffer(user_buf, count, ppos, buf, 2);
421}
422
423static const struct file_operations ssp_debug_mode_fops = {
424 .open = simple_open,
425 .read = ssp_debug_mode_read,
426 .llseek = default_llseek,
427};
428
429static int auto_accept_delay_set(void *data, u64 val)
430{
431 struct hci_dev *hdev = data;
432
433 hci_dev_lock(hdev);
434 hdev->auto_accept_delay = val;
435 hci_dev_unlock(hdev);
436
437 return 0;
438}
439
440static int auto_accept_delay_get(void *data, u64 *val)
441{
442 struct hci_dev *hdev = data;
443
444 hci_dev_lock(hdev);
445 *val = hdev->auto_accept_delay;
446 hci_dev_unlock(hdev);
447
448 return 0;
449}
450
451DEFINE_SIMPLE_ATTRIBUTE(auto_accept_delay_fops, auto_accept_delay_get,
452 auto_accept_delay_set, "%llu\n");
453
454static int idle_timeout_set(void *data, u64 val)
455{
456 struct hci_dev *hdev = data;
457
458 if (val != 0 && (val < 500 || val > 3600000))
459 return -EINVAL;
460
461 hci_dev_lock(hdev);
462 hdev->idle_timeout = val;
463 hci_dev_unlock(hdev);
464
465 return 0;
466}
467
468static int idle_timeout_get(void *data, u64 *val)
469{
470 struct hci_dev *hdev = data;
471
472 hci_dev_lock(hdev);
473 *val = hdev->idle_timeout;
474 hci_dev_unlock(hdev);
475
476 return 0;
477}
478
479DEFINE_SIMPLE_ATTRIBUTE(idle_timeout_fops, idle_timeout_get,
480 idle_timeout_set, "%llu\n");
481
482static int sniff_min_interval_set(void *data, u64 val)
483{
484 struct hci_dev *hdev = data;
485
486 if (val == 0 || val % 2 || val > hdev->sniff_max_interval)
487 return -EINVAL;
488
489 hci_dev_lock(hdev);
490 hdev->sniff_min_interval = val;
491 hci_dev_unlock(hdev);
492
493 return 0;
494}
495
496static int sniff_min_interval_get(void *data, u64 *val)
497{
498 struct hci_dev *hdev = data;
499
500 hci_dev_lock(hdev);
501 *val = hdev->sniff_min_interval;
502 hci_dev_unlock(hdev);
503
504 return 0;
505}
506
507DEFINE_SIMPLE_ATTRIBUTE(sniff_min_interval_fops, sniff_min_interval_get,
508 sniff_min_interval_set, "%llu\n");
509
510static int sniff_max_interval_set(void *data, u64 val)
511{
512 struct hci_dev *hdev = data;
513
514 if (val == 0 || val % 2 || val < hdev->sniff_min_interval)
515 return -EINVAL;
516
517 hci_dev_lock(hdev);
518 hdev->sniff_max_interval = val;
519 hci_dev_unlock(hdev);
520
521 return 0;
522}
523
524static int sniff_max_interval_get(void *data, u64 *val)
525{
526 struct hci_dev *hdev = data;
527
528 hci_dev_lock(hdev);
529 *val = hdev->sniff_max_interval;
530 hci_dev_unlock(hdev);
531
532 return 0;
533}
534
535DEFINE_SIMPLE_ATTRIBUTE(sniff_max_interval_fops, sniff_max_interval_get,
536 sniff_max_interval_set, "%llu\n");
537
538void hci_debugfs_create_bredr(struct hci_dev *hdev)
539{
540 debugfs_create_file("inquiry_cache", 0444, hdev->debugfs, hdev,
541 &inquiry_cache_fops);
542 debugfs_create_file("link_keys", 0400, hdev->debugfs, hdev,
543 &link_keys_fops);
544 debugfs_create_file("dev_class", 0444, hdev->debugfs, hdev,
545 &dev_class_fops);
546 debugfs_create_file("voice_setting", 0444, hdev->debugfs, hdev,
547 &voice_setting_fops);
548
549 if (lmp_ssp_capable(hdev)) {
550 debugfs_create_file("ssp_debug_mode", 0444, hdev->debugfs,
551 hdev, &ssp_debug_mode_fops);
552 debugfs_create_file("auto_accept_delay", 0644, hdev->debugfs,
553 hdev, &auto_accept_delay_fops);
554 }
555
556 if (lmp_sniff_capable(hdev)) {
557 debugfs_create_file("idle_timeout", 0644, hdev->debugfs,
558 hdev, &idle_timeout_fops);
559 debugfs_create_file("sniff_min_interval", 0644, hdev->debugfs,
560 hdev, &sniff_min_interval_fops);
561 debugfs_create_file("sniff_max_interval", 0644, hdev->debugfs,
562 hdev, &sniff_max_interval_fops);
563 }
564}
565
566static int identity_show(struct seq_file *f, void *p)
567{
568 struct hci_dev *hdev = f->private;
569 bdaddr_t addr;
570 u8 addr_type;
571
572 hci_dev_lock(hdev);
573
574 hci_copy_identity_address(hdev, &addr, &addr_type);
575
576 seq_printf(f, "%pMR (type %u) %*phN %pMR\n", &addr, addr_type,
577 16, hdev->irk, &hdev->rpa);
578
579 hci_dev_unlock(hdev);
580
581 return 0;
582}
583
584DEFINE_SHOW_ATTRIBUTE(identity);
585
586static int rpa_timeout_set(void *data, u64 val)
587{
588 struct hci_dev *hdev = data;
589
590 /* Require the RPA timeout to be at least 30 seconds and at most
591 * 24 hours.
592 */
593 if (val < 30 || val > (60 * 60 * 24))
594 return -EINVAL;
595
596 hci_dev_lock(hdev);
597 hdev->rpa_timeout = val;
598 hci_dev_unlock(hdev);
599
600 return 0;
601}
602
603static int rpa_timeout_get(void *data, u64 *val)
604{
605 struct hci_dev *hdev = data;
606
607 hci_dev_lock(hdev);
608 *val = hdev->rpa_timeout;
609 hci_dev_unlock(hdev);
610
611 return 0;
612}
613
614DEFINE_SIMPLE_ATTRIBUTE(rpa_timeout_fops, rpa_timeout_get,
615 rpa_timeout_set, "%llu\n");
616
617static int random_address_show(struct seq_file *f, void *p)
618{
619 struct hci_dev *hdev = f->private;
620
621 hci_dev_lock(hdev);
622 seq_printf(f, "%pMR\n", &hdev->random_addr);
623 hci_dev_unlock(hdev);
624
625 return 0;
626}
627
628DEFINE_SHOW_ATTRIBUTE(random_address);
629
630static int static_address_show(struct seq_file *f, void *p)
631{
632 struct hci_dev *hdev = f->private;
633
634 hci_dev_lock(hdev);
635 seq_printf(f, "%pMR\n", &hdev->static_addr);
636 hci_dev_unlock(hdev);
637
638 return 0;
639}
640
641DEFINE_SHOW_ATTRIBUTE(static_address);
642
643static ssize_t force_static_address_read(struct file *file,
644 char __user *user_buf,
645 size_t count, loff_t *ppos)
646{
647 struct hci_dev *hdev = file->private_data;
648 char buf[3];
649
650 buf[0] = hci_dev_test_flag(hdev, HCI_FORCE_STATIC_ADDR) ? 'Y': 'N';
651 buf[1] = '\n';
652 buf[2] = '\0';
653 return simple_read_from_buffer(user_buf, count, ppos, buf, 2);
654}
655
656static ssize_t force_static_address_write(struct file *file,
657 const char __user *user_buf,
658 size_t count, loff_t *ppos)
659{
660 struct hci_dev *hdev = file->private_data;
661 char buf[32];
662 size_t buf_size = min(count, (sizeof(buf)-1));
663 bool enable;
664
665 if (test_bit(HCI_UP, &hdev->flags))
666 return -EBUSY;
667
668 if (copy_from_user(buf, user_buf, buf_size))
669 return -EFAULT;
670
671 buf[buf_size] = '\0';
672 if (strtobool(buf, &enable))
673 return -EINVAL;
674
675 if (enable == hci_dev_test_flag(hdev, HCI_FORCE_STATIC_ADDR))
676 return -EALREADY;
677
678 hci_dev_change_flag(hdev, HCI_FORCE_STATIC_ADDR);
679
680 return count;
681}
682
683static const struct file_operations force_static_address_fops = {
684 .open = simple_open,
685 .read = force_static_address_read,
686 .write = force_static_address_write,
687 .llseek = default_llseek,
688};
689
690static int white_list_show(struct seq_file *f, void *ptr)
691{
692 struct hci_dev *hdev = f->private;
693 struct bdaddr_list *b;
694
695 hci_dev_lock(hdev);
696 list_for_each_entry(b, &hdev->le_white_list, list)
697 seq_printf(f, "%pMR (type %u)\n", &b->bdaddr, b->bdaddr_type);
698 hci_dev_unlock(hdev);
699
700 return 0;
701}
702
703DEFINE_SHOW_ATTRIBUTE(white_list);
704
705static int identity_resolving_keys_show(struct seq_file *f, void *ptr)
706{
707 struct hci_dev *hdev = f->private;
708 struct smp_irk *irk;
709
710 rcu_read_lock();
711 list_for_each_entry_rcu(irk, &hdev->identity_resolving_keys, list) {
712 seq_printf(f, "%pMR (type %u) %*phN %pMR\n",
713 &irk->bdaddr, irk->addr_type,
714 16, irk->val, &irk->rpa);
715 }
716 rcu_read_unlock();
717
718 return 0;
719}
720
721DEFINE_SHOW_ATTRIBUTE(identity_resolving_keys);
722
723static int long_term_keys_show(struct seq_file *f, void *ptr)
724{
725 struct hci_dev *hdev = f->private;
726 struct smp_ltk *ltk;
727
728 rcu_read_lock();
729 list_for_each_entry_rcu(ltk, &hdev->long_term_keys, list)
730 seq_printf(f, "%pMR (type %u) %u 0x%02x %u %.4x %.16llx %*phN\n",
731 <k->bdaddr, ltk->bdaddr_type, ltk->authenticated,
732 ltk->type, ltk->enc_size, __le16_to_cpu(ltk->ediv),
733 __le64_to_cpu(ltk->rand), 16, ltk->val);
734 rcu_read_unlock();
735
736 return 0;
737}
738
739DEFINE_SHOW_ATTRIBUTE(long_term_keys);
740
741static int conn_min_interval_set(void *data, u64 val)
742{
743 struct hci_dev *hdev = data;
744
745 if (val < 0x0006 || val > 0x0c80 || val > hdev->le_conn_max_interval)
746 return -EINVAL;
747
748 hci_dev_lock(hdev);
749 hdev->le_conn_min_interval = val;
750 hci_dev_unlock(hdev);
751
752 return 0;
753}
754
755static int conn_min_interval_get(void *data, u64 *val)
756{
757 struct hci_dev *hdev = data;
758
759 hci_dev_lock(hdev);
760 *val = hdev->le_conn_min_interval;
761 hci_dev_unlock(hdev);
762
763 return 0;
764}
765
766DEFINE_SIMPLE_ATTRIBUTE(conn_min_interval_fops, conn_min_interval_get,
767 conn_min_interval_set, "%llu\n");
768
769static int conn_max_interval_set(void *data, u64 val)
770{
771 struct hci_dev *hdev = data;
772
773 if (val < 0x0006 || val > 0x0c80 || val < hdev->le_conn_min_interval)
774 return -EINVAL;
775
776 hci_dev_lock(hdev);
777 hdev->le_conn_max_interval = val;
778 hci_dev_unlock(hdev);
779
780 return 0;
781}
782
783static int conn_max_interval_get(void *data, u64 *val)
784{
785 struct hci_dev *hdev = data;
786
787 hci_dev_lock(hdev);
788 *val = hdev->le_conn_max_interval;
789 hci_dev_unlock(hdev);
790
791 return 0;
792}
793
794DEFINE_SIMPLE_ATTRIBUTE(conn_max_interval_fops, conn_max_interval_get,
795 conn_max_interval_set, "%llu\n");
796
797static int conn_latency_set(void *data, u64 val)
798{
799 struct hci_dev *hdev = data;
800
801 if (val > 0x01f3)
802 return -EINVAL;
803
804 hci_dev_lock(hdev);
805 hdev->le_conn_latency = val;
806 hci_dev_unlock(hdev);
807
808 return 0;
809}
810
811static int conn_latency_get(void *data, u64 *val)
812{
813 struct hci_dev *hdev = data;
814
815 hci_dev_lock(hdev);
816 *val = hdev->le_conn_latency;
817 hci_dev_unlock(hdev);
818
819 return 0;
820}
821
822DEFINE_SIMPLE_ATTRIBUTE(conn_latency_fops, conn_latency_get,
823 conn_latency_set, "%llu\n");
824
825static int supervision_timeout_set(void *data, u64 val)
826{
827 struct hci_dev *hdev = data;
828
829 if (val < 0x000a || val > 0x0c80)
830 return -EINVAL;
831
832 hci_dev_lock(hdev);
833 hdev->le_supv_timeout = val;
834 hci_dev_unlock(hdev);
835
836 return 0;
837}
838
839static int supervision_timeout_get(void *data, u64 *val)
840{
841 struct hci_dev *hdev = data;
842
843 hci_dev_lock(hdev);
844 *val = hdev->le_supv_timeout;
845 hci_dev_unlock(hdev);
846
847 return 0;
848}
849
850DEFINE_SIMPLE_ATTRIBUTE(supervision_timeout_fops, supervision_timeout_get,
851 supervision_timeout_set, "%llu\n");
852
853static int adv_channel_map_set(void *data, u64 val)
854{
855 struct hci_dev *hdev = data;
856
857 if (val < 0x01 || val > 0x07)
858 return -EINVAL;
859
860 hci_dev_lock(hdev);
861 hdev->le_adv_channel_map = val;
862 hci_dev_unlock(hdev);
863
864 return 0;
865}
866
867static int adv_channel_map_get(void *data, u64 *val)
868{
869 struct hci_dev *hdev = data;
870
871 hci_dev_lock(hdev);
872 *val = hdev->le_adv_channel_map;
873 hci_dev_unlock(hdev);
874
875 return 0;
876}
877
878DEFINE_SIMPLE_ATTRIBUTE(adv_channel_map_fops, adv_channel_map_get,
879 adv_channel_map_set, "%llu\n");
880
881static int adv_min_interval_set(void *data, u64 val)
882{
883 struct hci_dev *hdev = data;
884
885 if (val < 0x0020 || val > 0x4000 || val > hdev->le_adv_max_interval)
886 return -EINVAL;
887
888 hci_dev_lock(hdev);
889 hdev->le_adv_min_interval = val;
890 hci_dev_unlock(hdev);
891
892 return 0;
893}
894
895static int adv_min_interval_get(void *data, u64 *val)
896{
897 struct hci_dev *hdev = data;
898
899 hci_dev_lock(hdev);
900 *val = hdev->le_adv_min_interval;
901 hci_dev_unlock(hdev);
902
903 return 0;
904}
905
906DEFINE_SIMPLE_ATTRIBUTE(adv_min_interval_fops, adv_min_interval_get,
907 adv_min_interval_set, "%llu\n");
908
909static int adv_max_interval_set(void *data, u64 val)
910{
911 struct hci_dev *hdev = data;
912
913 if (val < 0x0020 || val > 0x4000 || val < hdev->le_adv_min_interval)
914 return -EINVAL;
915
916 hci_dev_lock(hdev);
917 hdev->le_adv_max_interval = val;
918 hci_dev_unlock(hdev);
919
920 return 0;
921}
922
923static int adv_max_interval_get(void *data, u64 *val)
924{
925 struct hci_dev *hdev = data;
926
927 hci_dev_lock(hdev);
928 *val = hdev->le_adv_max_interval;
929 hci_dev_unlock(hdev);
930
931 return 0;
932}
933
934DEFINE_SIMPLE_ATTRIBUTE(adv_max_interval_fops, adv_max_interval_get,
935 adv_max_interval_set, "%llu\n");
936
937DEFINE_QUIRK_ATTRIBUTE(quirk_strict_duplicate_filter,
938 HCI_QUIRK_STRICT_DUPLICATE_FILTER);
939DEFINE_QUIRK_ATTRIBUTE(quirk_simultaneous_discovery,
940 HCI_QUIRK_SIMULTANEOUS_DISCOVERY);
941
942void hci_debugfs_create_le(struct hci_dev *hdev)
943{
944 debugfs_create_file("identity", 0400, hdev->debugfs, hdev,
945 &identity_fops);
946 debugfs_create_file("rpa_timeout", 0644, hdev->debugfs, hdev,
947 &rpa_timeout_fops);
948 debugfs_create_file("random_address", 0444, hdev->debugfs, hdev,
949 &random_address_fops);
950 debugfs_create_file("static_address", 0444, hdev->debugfs, hdev,
951 &static_address_fops);
952
953 /* For controllers with a public address, provide a debug
954 * option to force the usage of the configured static
955 * address. By default the public address is used.
956 */
957 if (bacmp(&hdev->bdaddr, BDADDR_ANY))
958 debugfs_create_file("force_static_address", 0644,
959 hdev->debugfs, hdev,
960 &force_static_address_fops);
961
962 debugfs_create_u8("white_list_size", 0444, hdev->debugfs,
963 &hdev->le_white_list_size);
964 debugfs_create_file("white_list", 0444, hdev->debugfs, hdev,
965 &white_list_fops);
966 debugfs_create_file("identity_resolving_keys", 0400, hdev->debugfs,
967 hdev, &identity_resolving_keys_fops);
968 debugfs_create_file("long_term_keys", 0400, hdev->debugfs, hdev,
969 &long_term_keys_fops);
970 debugfs_create_file("conn_min_interval", 0644, hdev->debugfs, hdev,
971 &conn_min_interval_fops);
972 debugfs_create_file("conn_max_interval", 0644, hdev->debugfs, hdev,
973 &conn_max_interval_fops);
974 debugfs_create_file("conn_latency", 0644, hdev->debugfs, hdev,
975 &conn_latency_fops);
976 debugfs_create_file("supervision_timeout", 0644, hdev->debugfs, hdev,
977 &supervision_timeout_fops);
978 debugfs_create_file("adv_channel_map", 0644, hdev->debugfs, hdev,
979 &adv_channel_map_fops);
980 debugfs_create_file("adv_min_interval", 0644, hdev->debugfs, hdev,
981 &adv_min_interval_fops);
982 debugfs_create_file("adv_max_interval", 0644, hdev->debugfs, hdev,
983 &adv_max_interval_fops);
984 debugfs_create_u16("discov_interleaved_timeout", 0644, hdev->debugfs,
985 &hdev->discov_interleaved_timeout);
986
987 debugfs_create_file("quirk_strict_duplicate_filter", 0644,
988 hdev->debugfs, hdev,
989 &quirk_strict_duplicate_filter_fops);
990 debugfs_create_file("quirk_simultaneous_discovery", 0644,
991 hdev->debugfs, hdev,
992 &quirk_simultaneous_discovery_fops);
993}
994
995void hci_debugfs_create_conn(struct hci_conn *conn)
996{
997 struct hci_dev *hdev = conn->hdev;
998 char name[6];
999
1000 if (IS_ERR_OR_NULL(hdev->debugfs))
1001 return;
1002
1003 snprintf(name, sizeof(name), "%u", conn->handle);
1004 conn->debugfs = debugfs_create_dir(name, hdev->debugfs);
1005}