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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 bool enable; \
51 int err; \
52 \
53 if (test_bit(HCI_UP, &hdev->flags)) \
54 return -EBUSY; \
55 \
56 err = kstrtobool_from_user(user_buf, count, &enable); \
57 if (err) \
58 return err; \
59 \
60 if (enable == test_bit(__quirk, &hdev->quirks)) \
61 return -EALREADY; \
62 \
63 change_bit(__quirk, &hdev->quirks); \
64 \
65 return count; \
66} \
67 \
68static const struct file_operations __name ## _fops = { \
69 .open = simple_open, \
70 .read = __name ## _read, \
71 .write = __name ## _write, \
72 .llseek = default_llseek, \
73} \
74
75#define DEFINE_INFO_ATTRIBUTE(__name, __field) \
76static int __name ## _show(struct seq_file *f, void *ptr) \
77{ \
78 struct hci_dev *hdev = f->private; \
79 \
80 hci_dev_lock(hdev); \
81 seq_printf(f, "%s\n", hdev->__field ? : ""); \
82 hci_dev_unlock(hdev); \
83 \
84 return 0; \
85} \
86 \
87DEFINE_SHOW_ATTRIBUTE(__name)
88
89static int features_show(struct seq_file *f, void *ptr)
90{
91 struct hci_dev *hdev = f->private;
92 u8 p;
93
94 hci_dev_lock(hdev);
95 for (p = 0; p < HCI_MAX_PAGES && p <= hdev->max_page; p++)
96 seq_printf(f, "%2u: %8ph\n", p, hdev->features[p]);
97 if (lmp_le_capable(hdev))
98 seq_printf(f, "LE: %8ph\n", hdev->le_features);
99 hci_dev_unlock(hdev);
100
101 return 0;
102}
103
104DEFINE_SHOW_ATTRIBUTE(features);
105
106static int device_id_show(struct seq_file *f, void *ptr)
107{
108 struct hci_dev *hdev = f->private;
109
110 hci_dev_lock(hdev);
111 seq_printf(f, "%4.4x:%4.4x:%4.4x:%4.4x\n", hdev->devid_source,
112 hdev->devid_vendor, hdev->devid_product, hdev->devid_version);
113 hci_dev_unlock(hdev);
114
115 return 0;
116}
117
118DEFINE_SHOW_ATTRIBUTE(device_id);
119
120static int device_list_show(struct seq_file *f, void *ptr)
121{
122 struct hci_dev *hdev = f->private;
123 struct hci_conn_params *p;
124 struct bdaddr_list *b;
125
126 hci_dev_lock(hdev);
127 list_for_each_entry(b, &hdev->whitelist, list)
128 seq_printf(f, "%pMR (type %u)\n", &b->bdaddr, b->bdaddr_type);
129 list_for_each_entry(p, &hdev->le_conn_params, list) {
130 seq_printf(f, "%pMR (type %u) %u\n", &p->addr, p->addr_type,
131 p->auto_connect);
132 }
133 hci_dev_unlock(hdev);
134
135 return 0;
136}
137
138DEFINE_SHOW_ATTRIBUTE(device_list);
139
140static int blacklist_show(struct seq_file *f, void *p)
141{
142 struct hci_dev *hdev = f->private;
143 struct bdaddr_list *b;
144
145 hci_dev_lock(hdev);
146 list_for_each_entry(b, &hdev->blacklist, list)
147 seq_printf(f, "%pMR (type %u)\n", &b->bdaddr, b->bdaddr_type);
148 hci_dev_unlock(hdev);
149
150 return 0;
151}
152
153DEFINE_SHOW_ATTRIBUTE(blacklist);
154
155static int uuids_show(struct seq_file *f, void *p)
156{
157 struct hci_dev *hdev = f->private;
158 struct bt_uuid *uuid;
159
160 hci_dev_lock(hdev);
161 list_for_each_entry(uuid, &hdev->uuids, list) {
162 u8 i, val[16];
163
164 /* The Bluetooth UUID values are stored in big endian,
165 * but with reversed byte order. So convert them into
166 * the right order for the %pUb modifier.
167 */
168 for (i = 0; i < 16; i++)
169 val[i] = uuid->uuid[15 - i];
170
171 seq_printf(f, "%pUb\n", val);
172 }
173 hci_dev_unlock(hdev);
174
175 return 0;
176}
177
178DEFINE_SHOW_ATTRIBUTE(uuids);
179
180static int remote_oob_show(struct seq_file *f, void *ptr)
181{
182 struct hci_dev *hdev = f->private;
183 struct oob_data *data;
184
185 hci_dev_lock(hdev);
186 list_for_each_entry(data, &hdev->remote_oob_data, list) {
187 seq_printf(f, "%pMR (type %u) %u %*phN %*phN %*phN %*phN\n",
188 &data->bdaddr, data->bdaddr_type, data->present,
189 16, data->hash192, 16, data->rand192,
190 16, data->hash256, 16, data->rand256);
191 }
192 hci_dev_unlock(hdev);
193
194 return 0;
195}
196
197DEFINE_SHOW_ATTRIBUTE(remote_oob);
198
199static int conn_info_min_age_set(void *data, u64 val)
200{
201 struct hci_dev *hdev = data;
202
203 if (val == 0 || val > hdev->conn_info_max_age)
204 return -EINVAL;
205
206 hci_dev_lock(hdev);
207 hdev->conn_info_min_age = val;
208 hci_dev_unlock(hdev);
209
210 return 0;
211}
212
213static int conn_info_min_age_get(void *data, u64 *val)
214{
215 struct hci_dev *hdev = data;
216
217 hci_dev_lock(hdev);
218 *val = hdev->conn_info_min_age;
219 hci_dev_unlock(hdev);
220
221 return 0;
222}
223
224DEFINE_SIMPLE_ATTRIBUTE(conn_info_min_age_fops, conn_info_min_age_get,
225 conn_info_min_age_set, "%llu\n");
226
227static int conn_info_max_age_set(void *data, u64 val)
228{
229 struct hci_dev *hdev = data;
230
231 if (val == 0 || val < hdev->conn_info_min_age)
232 return -EINVAL;
233
234 hci_dev_lock(hdev);
235 hdev->conn_info_max_age = val;
236 hci_dev_unlock(hdev);
237
238 return 0;
239}
240
241static int conn_info_max_age_get(void *data, u64 *val)
242{
243 struct hci_dev *hdev = data;
244
245 hci_dev_lock(hdev);
246 *val = hdev->conn_info_max_age;
247 hci_dev_unlock(hdev);
248
249 return 0;
250}
251
252DEFINE_SIMPLE_ATTRIBUTE(conn_info_max_age_fops, conn_info_max_age_get,
253 conn_info_max_age_set, "%llu\n");
254
255static ssize_t use_debug_keys_read(struct file *file, char __user *user_buf,
256 size_t count, loff_t *ppos)
257{
258 struct hci_dev *hdev = file->private_data;
259 char buf[3];
260
261 buf[0] = hci_dev_test_flag(hdev, HCI_USE_DEBUG_KEYS) ? 'Y': 'N';
262 buf[1] = '\n';
263 buf[2] = '\0';
264 return simple_read_from_buffer(user_buf, count, ppos, buf, 2);
265}
266
267static const struct file_operations use_debug_keys_fops = {
268 .open = simple_open,
269 .read = use_debug_keys_read,
270 .llseek = default_llseek,
271};
272
273static ssize_t sc_only_mode_read(struct file *file, char __user *user_buf,
274 size_t count, loff_t *ppos)
275{
276 struct hci_dev *hdev = file->private_data;
277 char buf[3];
278
279 buf[0] = hci_dev_test_flag(hdev, HCI_SC_ONLY) ? 'Y': 'N';
280 buf[1] = '\n';
281 buf[2] = '\0';
282 return simple_read_from_buffer(user_buf, count, ppos, buf, 2);
283}
284
285static const struct file_operations sc_only_mode_fops = {
286 .open = simple_open,
287 .read = sc_only_mode_read,
288 .llseek = default_llseek,
289};
290
291DEFINE_INFO_ATTRIBUTE(hardware_info, hw_info);
292DEFINE_INFO_ATTRIBUTE(firmware_info, fw_info);
293
294void hci_debugfs_create_common(struct hci_dev *hdev)
295{
296 debugfs_create_file("features", 0444, hdev->debugfs, hdev,
297 &features_fops);
298 debugfs_create_u16("manufacturer", 0444, hdev->debugfs,
299 &hdev->manufacturer);
300 debugfs_create_u8("hci_version", 0444, hdev->debugfs, &hdev->hci_ver);
301 debugfs_create_u16("hci_revision", 0444, hdev->debugfs, &hdev->hci_rev);
302 debugfs_create_u8("hardware_error", 0444, hdev->debugfs,
303 &hdev->hw_error_code);
304 debugfs_create_file("device_id", 0444, hdev->debugfs, hdev,
305 &device_id_fops);
306
307 debugfs_create_file("device_list", 0444, hdev->debugfs, hdev,
308 &device_list_fops);
309 debugfs_create_file("blacklist", 0444, hdev->debugfs, hdev,
310 &blacklist_fops);
311 debugfs_create_file("uuids", 0444, hdev->debugfs, hdev, &uuids_fops);
312 debugfs_create_file("remote_oob", 0400, hdev->debugfs, hdev,
313 &remote_oob_fops);
314
315 debugfs_create_file("conn_info_min_age", 0644, hdev->debugfs, hdev,
316 &conn_info_min_age_fops);
317 debugfs_create_file("conn_info_max_age", 0644, hdev->debugfs, hdev,
318 &conn_info_max_age_fops);
319
320 if (lmp_ssp_capable(hdev) || lmp_le_capable(hdev))
321 debugfs_create_file("use_debug_keys", 0444, hdev->debugfs,
322 hdev, &use_debug_keys_fops);
323
324 if (lmp_sc_capable(hdev) || lmp_le_capable(hdev))
325 debugfs_create_file("sc_only_mode", 0444, hdev->debugfs,
326 hdev, &sc_only_mode_fops);
327
328 if (hdev->hw_info)
329 debugfs_create_file("hardware_info", 0444, hdev->debugfs,
330 hdev, &hardware_info_fops);
331
332 if (hdev->fw_info)
333 debugfs_create_file("firmware_info", 0444, hdev->debugfs,
334 hdev, &firmware_info_fops);
335}
336
337static int inquiry_cache_show(struct seq_file *f, void *p)
338{
339 struct hci_dev *hdev = f->private;
340 struct discovery_state *cache = &hdev->discovery;
341 struct inquiry_entry *e;
342
343 hci_dev_lock(hdev);
344
345 list_for_each_entry(e, &cache->all, all) {
346 struct inquiry_data *data = &e->data;
347 seq_printf(f, "%pMR %d %d %d 0x%.2x%.2x%.2x 0x%.4x %d %d %u\n",
348 &data->bdaddr,
349 data->pscan_rep_mode, data->pscan_period_mode,
350 data->pscan_mode, data->dev_class[2],
351 data->dev_class[1], data->dev_class[0],
352 __le16_to_cpu(data->clock_offset),
353 data->rssi, data->ssp_mode, e->timestamp);
354 }
355
356 hci_dev_unlock(hdev);
357
358 return 0;
359}
360
361DEFINE_SHOW_ATTRIBUTE(inquiry_cache);
362
363static int link_keys_show(struct seq_file *f, void *ptr)
364{
365 struct hci_dev *hdev = f->private;
366 struct link_key *key;
367
368 rcu_read_lock();
369 list_for_each_entry_rcu(key, &hdev->link_keys, list)
370 seq_printf(f, "%pMR %u %*phN %u\n", &key->bdaddr, key->type,
371 HCI_LINK_KEY_SIZE, key->val, key->pin_len);
372 rcu_read_unlock();
373
374 return 0;
375}
376
377DEFINE_SHOW_ATTRIBUTE(link_keys);
378
379static int dev_class_show(struct seq_file *f, void *ptr)
380{
381 struct hci_dev *hdev = f->private;
382
383 hci_dev_lock(hdev);
384 seq_printf(f, "0x%.2x%.2x%.2x\n", hdev->dev_class[2],
385 hdev->dev_class[1], hdev->dev_class[0]);
386 hci_dev_unlock(hdev);
387
388 return 0;
389}
390
391DEFINE_SHOW_ATTRIBUTE(dev_class);
392
393static int voice_setting_get(void *data, u64 *val)
394{
395 struct hci_dev *hdev = data;
396
397 hci_dev_lock(hdev);
398 *val = hdev->voice_setting;
399 hci_dev_unlock(hdev);
400
401 return 0;
402}
403
404DEFINE_SIMPLE_ATTRIBUTE(voice_setting_fops, voice_setting_get,
405 NULL, "0x%4.4llx\n");
406
407static ssize_t ssp_debug_mode_read(struct file *file, char __user *user_buf,
408 size_t count, loff_t *ppos)
409{
410 struct hci_dev *hdev = file->private_data;
411 char buf[3];
412
413 buf[0] = hdev->ssp_debug_mode ? 'Y': 'N';
414 buf[1] = '\n';
415 buf[2] = '\0';
416 return simple_read_from_buffer(user_buf, count, ppos, buf, 2);
417}
418
419static const struct file_operations ssp_debug_mode_fops = {
420 .open = simple_open,
421 .read = ssp_debug_mode_read,
422 .llseek = default_llseek,
423};
424
425static int auto_accept_delay_set(void *data, u64 val)
426{
427 struct hci_dev *hdev = data;
428
429 hci_dev_lock(hdev);
430 hdev->auto_accept_delay = val;
431 hci_dev_unlock(hdev);
432
433 return 0;
434}
435
436static int min_encrypt_key_size_set(void *data, u64 val)
437{
438 struct hci_dev *hdev = data;
439
440 if (val < 1 || val > 16)
441 return -EINVAL;
442
443 hci_dev_lock(hdev);
444 hdev->min_enc_key_size = val;
445 hci_dev_unlock(hdev);
446
447 return 0;
448}
449
450static int min_encrypt_key_size_get(void *data, u64 *val)
451{
452 struct hci_dev *hdev = data;
453
454 hci_dev_lock(hdev);
455 *val = hdev->min_enc_key_size;
456 hci_dev_unlock(hdev);
457
458 return 0;
459}
460
461DEFINE_SIMPLE_ATTRIBUTE(min_encrypt_key_size_fops,
462 min_encrypt_key_size_get,
463 min_encrypt_key_size_set, "%llu\n");
464
465static int auto_accept_delay_get(void *data, u64 *val)
466{
467 struct hci_dev *hdev = data;
468
469 hci_dev_lock(hdev);
470 *val = hdev->auto_accept_delay;
471 hci_dev_unlock(hdev);
472
473 return 0;
474}
475
476DEFINE_SIMPLE_ATTRIBUTE(auto_accept_delay_fops, auto_accept_delay_get,
477 auto_accept_delay_set, "%llu\n");
478
479static int idle_timeout_set(void *data, u64 val)
480{
481 struct hci_dev *hdev = data;
482
483 if (val != 0 && (val < 500 || val > 3600000))
484 return -EINVAL;
485
486 hci_dev_lock(hdev);
487 hdev->idle_timeout = val;
488 hci_dev_unlock(hdev);
489
490 return 0;
491}
492
493static int idle_timeout_get(void *data, u64 *val)
494{
495 struct hci_dev *hdev = data;
496
497 hci_dev_lock(hdev);
498 *val = hdev->idle_timeout;
499 hci_dev_unlock(hdev);
500
501 return 0;
502}
503
504DEFINE_SIMPLE_ATTRIBUTE(idle_timeout_fops, idle_timeout_get,
505 idle_timeout_set, "%llu\n");
506
507static int sniff_min_interval_set(void *data, u64 val)
508{
509 struct hci_dev *hdev = data;
510
511 if (val == 0 || val % 2 || val > hdev->sniff_max_interval)
512 return -EINVAL;
513
514 hci_dev_lock(hdev);
515 hdev->sniff_min_interval = val;
516 hci_dev_unlock(hdev);
517
518 return 0;
519}
520
521static int sniff_min_interval_get(void *data, u64 *val)
522{
523 struct hci_dev *hdev = data;
524
525 hci_dev_lock(hdev);
526 *val = hdev->sniff_min_interval;
527 hci_dev_unlock(hdev);
528
529 return 0;
530}
531
532DEFINE_SIMPLE_ATTRIBUTE(sniff_min_interval_fops, sniff_min_interval_get,
533 sniff_min_interval_set, "%llu\n");
534
535static int sniff_max_interval_set(void *data, u64 val)
536{
537 struct hci_dev *hdev = data;
538
539 if (val == 0 || val % 2 || val < hdev->sniff_min_interval)
540 return -EINVAL;
541
542 hci_dev_lock(hdev);
543 hdev->sniff_max_interval = val;
544 hci_dev_unlock(hdev);
545
546 return 0;
547}
548
549static int sniff_max_interval_get(void *data, u64 *val)
550{
551 struct hci_dev *hdev = data;
552
553 hci_dev_lock(hdev);
554 *val = hdev->sniff_max_interval;
555 hci_dev_unlock(hdev);
556
557 return 0;
558}
559
560DEFINE_SIMPLE_ATTRIBUTE(sniff_max_interval_fops, sniff_max_interval_get,
561 sniff_max_interval_set, "%llu\n");
562
563void hci_debugfs_create_bredr(struct hci_dev *hdev)
564{
565 debugfs_create_file("inquiry_cache", 0444, hdev->debugfs, hdev,
566 &inquiry_cache_fops);
567 debugfs_create_file("link_keys", 0400, hdev->debugfs, hdev,
568 &link_keys_fops);
569 debugfs_create_file("dev_class", 0444, hdev->debugfs, hdev,
570 &dev_class_fops);
571 debugfs_create_file("voice_setting", 0444, hdev->debugfs, hdev,
572 &voice_setting_fops);
573
574 if (lmp_ssp_capable(hdev)) {
575 debugfs_create_file("ssp_debug_mode", 0444, hdev->debugfs,
576 hdev, &ssp_debug_mode_fops);
577 debugfs_create_file("min_encrypt_key_size", 0644, hdev->debugfs,
578 hdev, &min_encrypt_key_size_fops);
579 debugfs_create_file("auto_accept_delay", 0644, hdev->debugfs,
580 hdev, &auto_accept_delay_fops);
581 }
582
583 if (lmp_sniff_capable(hdev)) {
584 debugfs_create_file("idle_timeout", 0644, hdev->debugfs,
585 hdev, &idle_timeout_fops);
586 debugfs_create_file("sniff_min_interval", 0644, hdev->debugfs,
587 hdev, &sniff_min_interval_fops);
588 debugfs_create_file("sniff_max_interval", 0644, hdev->debugfs,
589 hdev, &sniff_max_interval_fops);
590 }
591}
592
593static int identity_show(struct seq_file *f, void *p)
594{
595 struct hci_dev *hdev = f->private;
596 bdaddr_t addr;
597 u8 addr_type;
598
599 hci_dev_lock(hdev);
600
601 hci_copy_identity_address(hdev, &addr, &addr_type);
602
603 seq_printf(f, "%pMR (type %u) %*phN %pMR\n", &addr, addr_type,
604 16, hdev->irk, &hdev->rpa);
605
606 hci_dev_unlock(hdev);
607
608 return 0;
609}
610
611DEFINE_SHOW_ATTRIBUTE(identity);
612
613static int rpa_timeout_set(void *data, u64 val)
614{
615 struct hci_dev *hdev = data;
616
617 /* Require the RPA timeout to be at least 30 seconds and at most
618 * 24 hours.
619 */
620 if (val < 30 || val > (60 * 60 * 24))
621 return -EINVAL;
622
623 hci_dev_lock(hdev);
624 hdev->rpa_timeout = val;
625 hci_dev_unlock(hdev);
626
627 return 0;
628}
629
630static int rpa_timeout_get(void *data, u64 *val)
631{
632 struct hci_dev *hdev = data;
633
634 hci_dev_lock(hdev);
635 *val = hdev->rpa_timeout;
636 hci_dev_unlock(hdev);
637
638 return 0;
639}
640
641DEFINE_SIMPLE_ATTRIBUTE(rpa_timeout_fops, rpa_timeout_get,
642 rpa_timeout_set, "%llu\n");
643
644static int random_address_show(struct seq_file *f, void *p)
645{
646 struct hci_dev *hdev = f->private;
647
648 hci_dev_lock(hdev);
649 seq_printf(f, "%pMR\n", &hdev->random_addr);
650 hci_dev_unlock(hdev);
651
652 return 0;
653}
654
655DEFINE_SHOW_ATTRIBUTE(random_address);
656
657static int static_address_show(struct seq_file *f, void *p)
658{
659 struct hci_dev *hdev = f->private;
660
661 hci_dev_lock(hdev);
662 seq_printf(f, "%pMR\n", &hdev->static_addr);
663 hci_dev_unlock(hdev);
664
665 return 0;
666}
667
668DEFINE_SHOW_ATTRIBUTE(static_address);
669
670static ssize_t force_static_address_read(struct file *file,
671 char __user *user_buf,
672 size_t count, loff_t *ppos)
673{
674 struct hci_dev *hdev = file->private_data;
675 char buf[3];
676
677 buf[0] = hci_dev_test_flag(hdev, HCI_FORCE_STATIC_ADDR) ? 'Y': 'N';
678 buf[1] = '\n';
679 buf[2] = '\0';
680 return simple_read_from_buffer(user_buf, count, ppos, buf, 2);
681}
682
683static ssize_t force_static_address_write(struct file *file,
684 const char __user *user_buf,
685 size_t count, loff_t *ppos)
686{
687 struct hci_dev *hdev = file->private_data;
688 bool enable;
689 int err;
690
691 if (test_bit(HCI_UP, &hdev->flags))
692 return -EBUSY;
693
694 err = kstrtobool_from_user(user_buf, count, &enable);
695 if (err)
696 return err;
697
698 if (enable == hci_dev_test_flag(hdev, HCI_FORCE_STATIC_ADDR))
699 return -EALREADY;
700
701 hci_dev_change_flag(hdev, HCI_FORCE_STATIC_ADDR);
702
703 return count;
704}
705
706static const struct file_operations force_static_address_fops = {
707 .open = simple_open,
708 .read = force_static_address_read,
709 .write = force_static_address_write,
710 .llseek = default_llseek,
711};
712
713static int white_list_show(struct seq_file *f, void *ptr)
714{
715 struct hci_dev *hdev = f->private;
716 struct bdaddr_list *b;
717
718 hci_dev_lock(hdev);
719 list_for_each_entry(b, &hdev->le_white_list, list)
720 seq_printf(f, "%pMR (type %u)\n", &b->bdaddr, b->bdaddr_type);
721 hci_dev_unlock(hdev);
722
723 return 0;
724}
725
726DEFINE_SHOW_ATTRIBUTE(white_list);
727
728static int resolv_list_show(struct seq_file *f, void *ptr)
729{
730 struct hci_dev *hdev = f->private;
731 struct bdaddr_list *b;
732
733 hci_dev_lock(hdev);
734 list_for_each_entry(b, &hdev->le_resolv_list, list)
735 seq_printf(f, "%pMR (type %u)\n", &b->bdaddr, b->bdaddr_type);
736 hci_dev_unlock(hdev);
737
738 return 0;
739}
740
741DEFINE_SHOW_ATTRIBUTE(resolv_list);
742
743static int identity_resolving_keys_show(struct seq_file *f, void *ptr)
744{
745 struct hci_dev *hdev = f->private;
746 struct smp_irk *irk;
747
748 rcu_read_lock();
749 list_for_each_entry_rcu(irk, &hdev->identity_resolving_keys, list) {
750 seq_printf(f, "%pMR (type %u) %*phN %pMR\n",
751 &irk->bdaddr, irk->addr_type,
752 16, irk->val, &irk->rpa);
753 }
754 rcu_read_unlock();
755
756 return 0;
757}
758
759DEFINE_SHOW_ATTRIBUTE(identity_resolving_keys);
760
761static int long_term_keys_show(struct seq_file *f, void *ptr)
762{
763 struct hci_dev *hdev = f->private;
764 struct smp_ltk *ltk;
765
766 rcu_read_lock();
767 list_for_each_entry_rcu(ltk, &hdev->long_term_keys, list)
768 seq_printf(f, "%pMR (type %u) %u 0x%02x %u %.4x %.16llx %*phN\n",
769 <k->bdaddr, ltk->bdaddr_type, ltk->authenticated,
770 ltk->type, ltk->enc_size, __le16_to_cpu(ltk->ediv),
771 __le64_to_cpu(ltk->rand), 16, ltk->val);
772 rcu_read_unlock();
773
774 return 0;
775}
776
777DEFINE_SHOW_ATTRIBUTE(long_term_keys);
778
779static int conn_min_interval_set(void *data, u64 val)
780{
781 struct hci_dev *hdev = data;
782
783 if (val < 0x0006 || val > 0x0c80 || val > hdev->le_conn_max_interval)
784 return -EINVAL;
785
786 hci_dev_lock(hdev);
787 hdev->le_conn_min_interval = val;
788 hci_dev_unlock(hdev);
789
790 return 0;
791}
792
793static int conn_min_interval_get(void *data, u64 *val)
794{
795 struct hci_dev *hdev = data;
796
797 hci_dev_lock(hdev);
798 *val = hdev->le_conn_min_interval;
799 hci_dev_unlock(hdev);
800
801 return 0;
802}
803
804DEFINE_SIMPLE_ATTRIBUTE(conn_min_interval_fops, conn_min_interval_get,
805 conn_min_interval_set, "%llu\n");
806
807static int conn_max_interval_set(void *data, u64 val)
808{
809 struct hci_dev *hdev = data;
810
811 if (val < 0x0006 || val > 0x0c80 || val < hdev->le_conn_min_interval)
812 return -EINVAL;
813
814 hci_dev_lock(hdev);
815 hdev->le_conn_max_interval = val;
816 hci_dev_unlock(hdev);
817
818 return 0;
819}
820
821static int conn_max_interval_get(void *data, u64 *val)
822{
823 struct hci_dev *hdev = data;
824
825 hci_dev_lock(hdev);
826 *val = hdev->le_conn_max_interval;
827 hci_dev_unlock(hdev);
828
829 return 0;
830}
831
832DEFINE_SIMPLE_ATTRIBUTE(conn_max_interval_fops, conn_max_interval_get,
833 conn_max_interval_set, "%llu\n");
834
835static int conn_latency_set(void *data, u64 val)
836{
837 struct hci_dev *hdev = data;
838
839 if (val > 0x01f3)
840 return -EINVAL;
841
842 hci_dev_lock(hdev);
843 hdev->le_conn_latency = val;
844 hci_dev_unlock(hdev);
845
846 return 0;
847}
848
849static int conn_latency_get(void *data, u64 *val)
850{
851 struct hci_dev *hdev = data;
852
853 hci_dev_lock(hdev);
854 *val = hdev->le_conn_latency;
855 hci_dev_unlock(hdev);
856
857 return 0;
858}
859
860DEFINE_SIMPLE_ATTRIBUTE(conn_latency_fops, conn_latency_get,
861 conn_latency_set, "%llu\n");
862
863static int supervision_timeout_set(void *data, u64 val)
864{
865 struct hci_dev *hdev = data;
866
867 if (val < 0x000a || val > 0x0c80)
868 return -EINVAL;
869
870 hci_dev_lock(hdev);
871 hdev->le_supv_timeout = val;
872 hci_dev_unlock(hdev);
873
874 return 0;
875}
876
877static int supervision_timeout_get(void *data, u64 *val)
878{
879 struct hci_dev *hdev = data;
880
881 hci_dev_lock(hdev);
882 *val = hdev->le_supv_timeout;
883 hci_dev_unlock(hdev);
884
885 return 0;
886}
887
888DEFINE_SIMPLE_ATTRIBUTE(supervision_timeout_fops, supervision_timeout_get,
889 supervision_timeout_set, "%llu\n");
890
891static int adv_channel_map_set(void *data, u64 val)
892{
893 struct hci_dev *hdev = data;
894
895 if (val < 0x01 || val > 0x07)
896 return -EINVAL;
897
898 hci_dev_lock(hdev);
899 hdev->le_adv_channel_map = val;
900 hci_dev_unlock(hdev);
901
902 return 0;
903}
904
905static int adv_channel_map_get(void *data, u64 *val)
906{
907 struct hci_dev *hdev = data;
908
909 hci_dev_lock(hdev);
910 *val = hdev->le_adv_channel_map;
911 hci_dev_unlock(hdev);
912
913 return 0;
914}
915
916DEFINE_SIMPLE_ATTRIBUTE(adv_channel_map_fops, adv_channel_map_get,
917 adv_channel_map_set, "%llu\n");
918
919static int adv_min_interval_set(void *data, u64 val)
920{
921 struct hci_dev *hdev = data;
922
923 if (val < 0x0020 || val > 0x4000 || val > hdev->le_adv_max_interval)
924 return -EINVAL;
925
926 hci_dev_lock(hdev);
927 hdev->le_adv_min_interval = val;
928 hci_dev_unlock(hdev);
929
930 return 0;
931}
932
933static int adv_min_interval_get(void *data, u64 *val)
934{
935 struct hci_dev *hdev = data;
936
937 hci_dev_lock(hdev);
938 *val = hdev->le_adv_min_interval;
939 hci_dev_unlock(hdev);
940
941 return 0;
942}
943
944DEFINE_SIMPLE_ATTRIBUTE(adv_min_interval_fops, adv_min_interval_get,
945 adv_min_interval_set, "%llu\n");
946
947static int adv_max_interval_set(void *data, u64 val)
948{
949 struct hci_dev *hdev = data;
950
951 if (val < 0x0020 || val > 0x4000 || val < hdev->le_adv_min_interval)
952 return -EINVAL;
953
954 hci_dev_lock(hdev);
955 hdev->le_adv_max_interval = val;
956 hci_dev_unlock(hdev);
957
958 return 0;
959}
960
961static int adv_max_interval_get(void *data, u64 *val)
962{
963 struct hci_dev *hdev = data;
964
965 hci_dev_lock(hdev);
966 *val = hdev->le_adv_max_interval;
967 hci_dev_unlock(hdev);
968
969 return 0;
970}
971
972DEFINE_SIMPLE_ATTRIBUTE(adv_max_interval_fops, adv_max_interval_get,
973 adv_max_interval_set, "%llu\n");
974
975static int auth_payload_timeout_set(void *data, u64 val)
976{
977 struct hci_dev *hdev = data;
978
979 if (val < 0x0001 || val > 0xffff)
980 return -EINVAL;
981
982 hci_dev_lock(hdev);
983 hdev->auth_payload_timeout = val;
984 hci_dev_unlock(hdev);
985
986 return 0;
987}
988
989static int auth_payload_timeout_get(void *data, u64 *val)
990{
991 struct hci_dev *hdev = data;
992
993 hci_dev_lock(hdev);
994 *val = hdev->auth_payload_timeout;
995 hci_dev_unlock(hdev);
996
997 return 0;
998}
999
1000DEFINE_SIMPLE_ATTRIBUTE(auth_payload_timeout_fops,
1001 auth_payload_timeout_get,
1002 auth_payload_timeout_set, "%llu\n");
1003
1004DEFINE_QUIRK_ATTRIBUTE(quirk_strict_duplicate_filter,
1005 HCI_QUIRK_STRICT_DUPLICATE_FILTER);
1006DEFINE_QUIRK_ATTRIBUTE(quirk_simultaneous_discovery,
1007 HCI_QUIRK_SIMULTANEOUS_DISCOVERY);
1008
1009void hci_debugfs_create_le(struct hci_dev *hdev)
1010{
1011 debugfs_create_file("identity", 0400, hdev->debugfs, hdev,
1012 &identity_fops);
1013 debugfs_create_file("rpa_timeout", 0644, hdev->debugfs, hdev,
1014 &rpa_timeout_fops);
1015 debugfs_create_file("random_address", 0444, hdev->debugfs, hdev,
1016 &random_address_fops);
1017 debugfs_create_file("static_address", 0444, hdev->debugfs, hdev,
1018 &static_address_fops);
1019
1020 /* For controllers with a public address, provide a debug
1021 * option to force the usage of the configured static
1022 * address. By default the public address is used.
1023 */
1024 if (bacmp(&hdev->bdaddr, BDADDR_ANY))
1025 debugfs_create_file("force_static_address", 0644,
1026 hdev->debugfs, hdev,
1027 &force_static_address_fops);
1028
1029 debugfs_create_u8("white_list_size", 0444, hdev->debugfs,
1030 &hdev->le_white_list_size);
1031 debugfs_create_file("white_list", 0444, hdev->debugfs, hdev,
1032 &white_list_fops);
1033 debugfs_create_u8("resolv_list_size", 0444, hdev->debugfs,
1034 &hdev->le_resolv_list_size);
1035 debugfs_create_file("resolv_list", 0444, hdev->debugfs, hdev,
1036 &resolv_list_fops);
1037 debugfs_create_file("identity_resolving_keys", 0400, hdev->debugfs,
1038 hdev, &identity_resolving_keys_fops);
1039 debugfs_create_file("long_term_keys", 0400, hdev->debugfs, hdev,
1040 &long_term_keys_fops);
1041 debugfs_create_file("conn_min_interval", 0644, hdev->debugfs, hdev,
1042 &conn_min_interval_fops);
1043 debugfs_create_file("conn_max_interval", 0644, hdev->debugfs, hdev,
1044 &conn_max_interval_fops);
1045 debugfs_create_file("conn_latency", 0644, hdev->debugfs, hdev,
1046 &conn_latency_fops);
1047 debugfs_create_file("supervision_timeout", 0644, hdev->debugfs, hdev,
1048 &supervision_timeout_fops);
1049 debugfs_create_file("adv_channel_map", 0644, hdev->debugfs, hdev,
1050 &adv_channel_map_fops);
1051 debugfs_create_file("adv_min_interval", 0644, hdev->debugfs, hdev,
1052 &adv_min_interval_fops);
1053 debugfs_create_file("adv_max_interval", 0644, hdev->debugfs, hdev,
1054 &adv_max_interval_fops);
1055 debugfs_create_u16("discov_interleaved_timeout", 0644, hdev->debugfs,
1056 &hdev->discov_interleaved_timeout);
1057 debugfs_create_file("auth_payload_timeout", 0644, hdev->debugfs, hdev,
1058 &auth_payload_timeout_fops);
1059
1060 debugfs_create_file("quirk_strict_duplicate_filter", 0644,
1061 hdev->debugfs, hdev,
1062 &quirk_strict_duplicate_filter_fops);
1063 debugfs_create_file("quirk_simultaneous_discovery", 0644,
1064 hdev->debugfs, hdev,
1065 &quirk_simultaneous_discovery_fops);
1066}
1067
1068void hci_debugfs_create_conn(struct hci_conn *conn)
1069{
1070 struct hci_dev *hdev = conn->hdev;
1071 char name[6];
1072
1073 if (IS_ERR_OR_NULL(hdev->debugfs))
1074 return;
1075
1076 snprintf(name, sizeof(name), "%u", conn->handle);
1077 conn->debugfs = debugfs_create_dir(name, hdev->debugfs);
1078}
1/*
2 BlueZ - Bluetooth protocol stack for Linux
3
4 Copyright (C) 2014 Intel Corporation
5
6 This program is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License version 2 as
8 published by the Free Software Foundation;
9
10 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
11 OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
12 FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF THIRD PARTY RIGHTS.
13 IN NO EVENT SHALL THE COPYRIGHT HOLDER(S) AND AUTHOR(S) BE LIABLE FOR ANY
14 CLAIM, OR ANY SPECIAL INDIRECT OR CONSEQUENTIAL DAMAGES, OR ANY DAMAGES
15 WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
16 ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
17 OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
18
19 ALL LIABILITY, INCLUDING LIABILITY FOR INFRINGEMENT OF ANY PATENTS,
20 COPYRIGHTS, TRADEMARKS OR OTHER RIGHTS, RELATING TO USE OF THIS
21 SOFTWARE IS DISCLAIMED.
22*/
23
24#include <linux/debugfs.h>
25#include <linux/kstrtox.h>
26
27#include <net/bluetooth/bluetooth.h>
28#include <net/bluetooth/hci_core.h>
29
30#include "smp.h"
31#include "hci_request.h"
32#include "hci_debugfs.h"
33
34#define DEFINE_QUIRK_ATTRIBUTE(__name, __quirk) \
35static ssize_t __name ## _read(struct file *file, \
36 char __user *user_buf, \
37 size_t count, loff_t *ppos) \
38{ \
39 struct hci_dev *hdev = file->private_data; \
40 char buf[3]; \
41 \
42 buf[0] = test_bit(__quirk, &hdev->quirks) ? 'Y' : 'N'; \
43 buf[1] = '\n'; \
44 buf[2] = '\0'; \
45 return simple_read_from_buffer(user_buf, count, ppos, buf, 2); \
46} \
47 \
48static ssize_t __name ## _write(struct file *file, \
49 const char __user *user_buf, \
50 size_t count, loff_t *ppos) \
51{ \
52 struct hci_dev *hdev = file->private_data; \
53 bool enable; \
54 int err; \
55 \
56 if (test_bit(HCI_UP, &hdev->flags)) \
57 return -EBUSY; \
58 \
59 err = kstrtobool_from_user(user_buf, count, &enable); \
60 if (err) \
61 return err; \
62 \
63 if (enable == test_bit(__quirk, &hdev->quirks)) \
64 return -EALREADY; \
65 \
66 change_bit(__quirk, &hdev->quirks); \
67 \
68 return count; \
69} \
70 \
71static const struct file_operations __name ## _fops = { \
72 .open = simple_open, \
73 .read = __name ## _read, \
74 .write = __name ## _write, \
75 .llseek = default_llseek, \
76} \
77
78#define DEFINE_INFO_ATTRIBUTE(__name, __field) \
79static int __name ## _show(struct seq_file *f, void *ptr) \
80{ \
81 struct hci_dev *hdev = f->private; \
82 \
83 hci_dev_lock(hdev); \
84 seq_printf(f, "%s\n", hdev->__field ? : ""); \
85 hci_dev_unlock(hdev); \
86 \
87 return 0; \
88} \
89 \
90DEFINE_SHOW_ATTRIBUTE(__name)
91
92static int features_show(struct seq_file *f, void *ptr)
93{
94 struct hci_dev *hdev = f->private;
95 u8 p;
96
97 hci_dev_lock(hdev);
98 for (p = 0; p < HCI_MAX_PAGES && p <= hdev->max_page; p++)
99 seq_printf(f, "%2u: %8ph\n", p, hdev->features[p]);
100 if (lmp_le_capable(hdev))
101 seq_printf(f, "LE: %8ph\n", hdev->le_features);
102 hci_dev_unlock(hdev);
103
104 return 0;
105}
106
107DEFINE_SHOW_ATTRIBUTE(features);
108
109static int device_id_show(struct seq_file *f, void *ptr)
110{
111 struct hci_dev *hdev = f->private;
112
113 hci_dev_lock(hdev);
114 seq_printf(f, "%4.4x:%4.4x:%4.4x:%4.4x\n", hdev->devid_source,
115 hdev->devid_vendor, hdev->devid_product, hdev->devid_version);
116 hci_dev_unlock(hdev);
117
118 return 0;
119}
120
121DEFINE_SHOW_ATTRIBUTE(device_id);
122
123static int device_list_show(struct seq_file *f, void *ptr)
124{
125 struct hci_dev *hdev = f->private;
126 struct hci_conn_params *p;
127 struct bdaddr_list *b;
128
129 hci_dev_lock(hdev);
130 list_for_each_entry(b, &hdev->accept_list, list)
131 seq_printf(f, "%pMR (type %u)\n", &b->bdaddr, b->bdaddr_type);
132 list_for_each_entry(p, &hdev->le_conn_params, list) {
133 seq_printf(f, "%pMR (type %u) %u\n", &p->addr, p->addr_type,
134 p->auto_connect);
135 }
136 hci_dev_unlock(hdev);
137
138 return 0;
139}
140
141DEFINE_SHOW_ATTRIBUTE(device_list);
142
143static int blacklist_show(struct seq_file *f, void *p)
144{
145 struct hci_dev *hdev = f->private;
146 struct bdaddr_list *b;
147
148 hci_dev_lock(hdev);
149 list_for_each_entry(b, &hdev->reject_list, list)
150 seq_printf(f, "%pMR (type %u)\n", &b->bdaddr, b->bdaddr_type);
151 hci_dev_unlock(hdev);
152
153 return 0;
154}
155
156DEFINE_SHOW_ATTRIBUTE(blacklist);
157
158static int blocked_keys_show(struct seq_file *f, void *p)
159{
160 struct hci_dev *hdev = f->private;
161 struct blocked_key *key;
162
163 rcu_read_lock();
164 list_for_each_entry_rcu(key, &hdev->blocked_keys, list)
165 seq_printf(f, "%u %*phN\n", key->type, 16, key->val);
166 rcu_read_unlock();
167
168 return 0;
169}
170
171DEFINE_SHOW_ATTRIBUTE(blocked_keys);
172
173static int uuids_show(struct seq_file *f, void *p)
174{
175 struct hci_dev *hdev = f->private;
176 struct bt_uuid *uuid;
177
178 hci_dev_lock(hdev);
179 list_for_each_entry(uuid, &hdev->uuids, list) {
180 u8 i, val[16];
181
182 /* The Bluetooth UUID values are stored in big endian,
183 * but with reversed byte order. So convert them into
184 * the right order for the %pUb modifier.
185 */
186 for (i = 0; i < 16; i++)
187 val[i] = uuid->uuid[15 - i];
188
189 seq_printf(f, "%pUb\n", val);
190 }
191 hci_dev_unlock(hdev);
192
193 return 0;
194}
195
196DEFINE_SHOW_ATTRIBUTE(uuids);
197
198static int remote_oob_show(struct seq_file *f, void *ptr)
199{
200 struct hci_dev *hdev = f->private;
201 struct oob_data *data;
202
203 hci_dev_lock(hdev);
204 list_for_each_entry(data, &hdev->remote_oob_data, list) {
205 seq_printf(f, "%pMR (type %u) %u %*phN %*phN %*phN %*phN\n",
206 &data->bdaddr, data->bdaddr_type, data->present,
207 16, data->hash192, 16, data->rand192,
208 16, data->hash256, 16, data->rand256);
209 }
210 hci_dev_unlock(hdev);
211
212 return 0;
213}
214
215DEFINE_SHOW_ATTRIBUTE(remote_oob);
216
217static int conn_info_min_age_set(void *data, u64 val)
218{
219 struct hci_dev *hdev = data;
220
221 if (val == 0 || val > hdev->conn_info_max_age)
222 return -EINVAL;
223
224 hci_dev_lock(hdev);
225 hdev->conn_info_min_age = val;
226 hci_dev_unlock(hdev);
227
228 return 0;
229}
230
231static int conn_info_min_age_get(void *data, u64 *val)
232{
233 struct hci_dev *hdev = data;
234
235 hci_dev_lock(hdev);
236 *val = hdev->conn_info_min_age;
237 hci_dev_unlock(hdev);
238
239 return 0;
240}
241
242DEFINE_DEBUGFS_ATTRIBUTE(conn_info_min_age_fops, conn_info_min_age_get,
243 conn_info_min_age_set, "%llu\n");
244
245static int conn_info_max_age_set(void *data, u64 val)
246{
247 struct hci_dev *hdev = data;
248
249 if (val == 0 || val < hdev->conn_info_min_age)
250 return -EINVAL;
251
252 hci_dev_lock(hdev);
253 hdev->conn_info_max_age = val;
254 hci_dev_unlock(hdev);
255
256 return 0;
257}
258
259static int conn_info_max_age_get(void *data, u64 *val)
260{
261 struct hci_dev *hdev = data;
262
263 hci_dev_lock(hdev);
264 *val = hdev->conn_info_max_age;
265 hci_dev_unlock(hdev);
266
267 return 0;
268}
269
270DEFINE_DEBUGFS_ATTRIBUTE(conn_info_max_age_fops, conn_info_max_age_get,
271 conn_info_max_age_set, "%llu\n");
272
273static ssize_t use_debug_keys_read(struct file *file, char __user *user_buf,
274 size_t count, loff_t *ppos)
275{
276 struct hci_dev *hdev = file->private_data;
277 char buf[3];
278
279 buf[0] = hci_dev_test_flag(hdev, HCI_USE_DEBUG_KEYS) ? 'Y' : 'N';
280 buf[1] = '\n';
281 buf[2] = '\0';
282 return simple_read_from_buffer(user_buf, count, ppos, buf, 2);
283}
284
285static const struct file_operations use_debug_keys_fops = {
286 .open = simple_open,
287 .read = use_debug_keys_read,
288 .llseek = default_llseek,
289};
290
291static ssize_t sc_only_mode_read(struct file *file, char __user *user_buf,
292 size_t count, loff_t *ppos)
293{
294 struct hci_dev *hdev = file->private_data;
295 char buf[3];
296
297 buf[0] = hci_dev_test_flag(hdev, HCI_SC_ONLY) ? 'Y' : 'N';
298 buf[1] = '\n';
299 buf[2] = '\0';
300 return simple_read_from_buffer(user_buf, count, ppos, buf, 2);
301}
302
303static const struct file_operations sc_only_mode_fops = {
304 .open = simple_open,
305 .read = sc_only_mode_read,
306 .llseek = default_llseek,
307};
308
309DEFINE_INFO_ATTRIBUTE(hardware_info, hw_info);
310DEFINE_INFO_ATTRIBUTE(firmware_info, fw_info);
311
312void hci_debugfs_create_common(struct hci_dev *hdev)
313{
314 debugfs_create_file("features", 0444, hdev->debugfs, hdev,
315 &features_fops);
316 debugfs_create_u16("manufacturer", 0444, hdev->debugfs,
317 &hdev->manufacturer);
318 debugfs_create_u8("hci_version", 0444, hdev->debugfs, &hdev->hci_ver);
319 debugfs_create_u16("hci_revision", 0444, hdev->debugfs, &hdev->hci_rev);
320 debugfs_create_u8("hardware_error", 0444, hdev->debugfs,
321 &hdev->hw_error_code);
322 debugfs_create_file("device_id", 0444, hdev->debugfs, hdev,
323 &device_id_fops);
324
325 debugfs_create_file("device_list", 0444, hdev->debugfs, hdev,
326 &device_list_fops);
327 debugfs_create_file("blacklist", 0444, hdev->debugfs, hdev,
328 &blacklist_fops);
329 debugfs_create_file("blocked_keys", 0444, hdev->debugfs, hdev,
330 &blocked_keys_fops);
331 debugfs_create_file("uuids", 0444, hdev->debugfs, hdev, &uuids_fops);
332 debugfs_create_file("remote_oob", 0400, hdev->debugfs, hdev,
333 &remote_oob_fops);
334
335 debugfs_create_file("conn_info_min_age", 0644, hdev->debugfs, hdev,
336 &conn_info_min_age_fops);
337 debugfs_create_file("conn_info_max_age", 0644, hdev->debugfs, hdev,
338 &conn_info_max_age_fops);
339
340 if (lmp_ssp_capable(hdev) || lmp_le_capable(hdev))
341 debugfs_create_file("use_debug_keys", 0444, hdev->debugfs,
342 hdev, &use_debug_keys_fops);
343
344 if (lmp_sc_capable(hdev) || lmp_le_capable(hdev))
345 debugfs_create_file("sc_only_mode", 0444, hdev->debugfs,
346 hdev, &sc_only_mode_fops);
347
348 if (hdev->hw_info)
349 debugfs_create_file("hardware_info", 0444, hdev->debugfs,
350 hdev, &hardware_info_fops);
351
352 if (hdev->fw_info)
353 debugfs_create_file("firmware_info", 0444, hdev->debugfs,
354 hdev, &firmware_info_fops);
355}
356
357static int inquiry_cache_show(struct seq_file *f, void *p)
358{
359 struct hci_dev *hdev = f->private;
360 struct discovery_state *cache = &hdev->discovery;
361 struct inquiry_entry *e;
362
363 hci_dev_lock(hdev);
364
365 list_for_each_entry(e, &cache->all, all) {
366 struct inquiry_data *data = &e->data;
367 seq_printf(f, "%pMR %d %d %d 0x%.2x%.2x%.2x 0x%.4x %d %d %u\n",
368 &data->bdaddr,
369 data->pscan_rep_mode, data->pscan_period_mode,
370 data->pscan_mode, data->dev_class[2],
371 data->dev_class[1], data->dev_class[0],
372 __le16_to_cpu(data->clock_offset),
373 data->rssi, data->ssp_mode, e->timestamp);
374 }
375
376 hci_dev_unlock(hdev);
377
378 return 0;
379}
380
381DEFINE_SHOW_ATTRIBUTE(inquiry_cache);
382
383static int link_keys_show(struct seq_file *f, void *ptr)
384{
385 struct hci_dev *hdev = f->private;
386 struct link_key *key;
387
388 rcu_read_lock();
389 list_for_each_entry_rcu(key, &hdev->link_keys, list)
390 seq_printf(f, "%pMR %u %*phN %u\n", &key->bdaddr, key->type,
391 HCI_LINK_KEY_SIZE, key->val, key->pin_len);
392 rcu_read_unlock();
393
394 return 0;
395}
396
397DEFINE_SHOW_ATTRIBUTE(link_keys);
398
399static int dev_class_show(struct seq_file *f, void *ptr)
400{
401 struct hci_dev *hdev = f->private;
402
403 hci_dev_lock(hdev);
404 seq_printf(f, "0x%.2x%.2x%.2x\n", hdev->dev_class[2],
405 hdev->dev_class[1], hdev->dev_class[0]);
406 hci_dev_unlock(hdev);
407
408 return 0;
409}
410
411DEFINE_SHOW_ATTRIBUTE(dev_class);
412
413static int voice_setting_get(void *data, u64 *val)
414{
415 struct hci_dev *hdev = data;
416
417 hci_dev_lock(hdev);
418 *val = hdev->voice_setting;
419 hci_dev_unlock(hdev);
420
421 return 0;
422}
423
424DEFINE_DEBUGFS_ATTRIBUTE(voice_setting_fops, voice_setting_get,
425 NULL, "0x%4.4llx\n");
426
427static ssize_t ssp_debug_mode_read(struct file *file, char __user *user_buf,
428 size_t count, loff_t *ppos)
429{
430 struct hci_dev *hdev = file->private_data;
431 char buf[3];
432
433 buf[0] = hdev->ssp_debug_mode ? 'Y' : 'N';
434 buf[1] = '\n';
435 buf[2] = '\0';
436 return simple_read_from_buffer(user_buf, count, ppos, buf, 2);
437}
438
439static const struct file_operations ssp_debug_mode_fops = {
440 .open = simple_open,
441 .read = ssp_debug_mode_read,
442 .llseek = default_llseek,
443};
444
445static int auto_accept_delay_set(void *data, u64 val)
446{
447 struct hci_dev *hdev = data;
448
449 hci_dev_lock(hdev);
450 hdev->auto_accept_delay = val;
451 hci_dev_unlock(hdev);
452
453 return 0;
454}
455
456static int min_encrypt_key_size_set(void *data, u64 val)
457{
458 struct hci_dev *hdev = data;
459
460 if (val < 1 || val > 16)
461 return -EINVAL;
462
463 hci_dev_lock(hdev);
464 hdev->min_enc_key_size = val;
465 hci_dev_unlock(hdev);
466
467 return 0;
468}
469
470static int min_encrypt_key_size_get(void *data, u64 *val)
471{
472 struct hci_dev *hdev = data;
473
474 hci_dev_lock(hdev);
475 *val = hdev->min_enc_key_size;
476 hci_dev_unlock(hdev);
477
478 return 0;
479}
480
481DEFINE_DEBUGFS_ATTRIBUTE(min_encrypt_key_size_fops,
482 min_encrypt_key_size_get,
483 min_encrypt_key_size_set, "%llu\n");
484
485static int auto_accept_delay_get(void *data, u64 *val)
486{
487 struct hci_dev *hdev = data;
488
489 hci_dev_lock(hdev);
490 *val = hdev->auto_accept_delay;
491 hci_dev_unlock(hdev);
492
493 return 0;
494}
495
496DEFINE_DEBUGFS_ATTRIBUTE(auto_accept_delay_fops, auto_accept_delay_get,
497 auto_accept_delay_set, "%llu\n");
498
499static ssize_t force_bredr_smp_read(struct file *file,
500 char __user *user_buf,
501 size_t count, loff_t *ppos)
502{
503 struct hci_dev *hdev = file->private_data;
504 char buf[3];
505
506 buf[0] = hci_dev_test_flag(hdev, HCI_FORCE_BREDR_SMP) ? 'Y' : 'N';
507 buf[1] = '\n';
508 buf[2] = '\0';
509 return simple_read_from_buffer(user_buf, count, ppos, buf, 2);
510}
511
512static ssize_t force_bredr_smp_write(struct file *file,
513 const char __user *user_buf,
514 size_t count, loff_t *ppos)
515{
516 struct hci_dev *hdev = file->private_data;
517 bool enable;
518 int err;
519
520 err = kstrtobool_from_user(user_buf, count, &enable);
521 if (err)
522 return err;
523
524 err = smp_force_bredr(hdev, enable);
525 if (err)
526 return err;
527
528 return count;
529}
530
531static const struct file_operations force_bredr_smp_fops = {
532 .open = simple_open,
533 .read = force_bredr_smp_read,
534 .write = force_bredr_smp_write,
535 .llseek = default_llseek,
536};
537
538static int idle_timeout_set(void *data, u64 val)
539{
540 struct hci_dev *hdev = data;
541
542 if (val != 0 && (val < 500 || val > 3600000))
543 return -EINVAL;
544
545 hci_dev_lock(hdev);
546 hdev->idle_timeout = val;
547 hci_dev_unlock(hdev);
548
549 return 0;
550}
551
552static int idle_timeout_get(void *data, u64 *val)
553{
554 struct hci_dev *hdev = data;
555
556 hci_dev_lock(hdev);
557 *val = hdev->idle_timeout;
558 hci_dev_unlock(hdev);
559
560 return 0;
561}
562
563DEFINE_DEBUGFS_ATTRIBUTE(idle_timeout_fops, idle_timeout_get,
564 idle_timeout_set, "%llu\n");
565
566static int sniff_min_interval_set(void *data, u64 val)
567{
568 struct hci_dev *hdev = data;
569
570 if (val == 0 || val % 2 || val > hdev->sniff_max_interval)
571 return -EINVAL;
572
573 hci_dev_lock(hdev);
574 hdev->sniff_min_interval = val;
575 hci_dev_unlock(hdev);
576
577 return 0;
578}
579
580static int sniff_min_interval_get(void *data, u64 *val)
581{
582 struct hci_dev *hdev = data;
583
584 hci_dev_lock(hdev);
585 *val = hdev->sniff_min_interval;
586 hci_dev_unlock(hdev);
587
588 return 0;
589}
590
591DEFINE_DEBUGFS_ATTRIBUTE(sniff_min_interval_fops, sniff_min_interval_get,
592 sniff_min_interval_set, "%llu\n");
593
594static int sniff_max_interval_set(void *data, u64 val)
595{
596 struct hci_dev *hdev = data;
597
598 if (val == 0 || val % 2 || val < hdev->sniff_min_interval)
599 return -EINVAL;
600
601 hci_dev_lock(hdev);
602 hdev->sniff_max_interval = val;
603 hci_dev_unlock(hdev);
604
605 return 0;
606}
607
608static int sniff_max_interval_get(void *data, u64 *val)
609{
610 struct hci_dev *hdev = data;
611
612 hci_dev_lock(hdev);
613 *val = hdev->sniff_max_interval;
614 hci_dev_unlock(hdev);
615
616 return 0;
617}
618
619DEFINE_DEBUGFS_ATTRIBUTE(sniff_max_interval_fops, sniff_max_interval_get,
620 sniff_max_interval_set, "%llu\n");
621
622void hci_debugfs_create_bredr(struct hci_dev *hdev)
623{
624 debugfs_create_file("inquiry_cache", 0444, hdev->debugfs, hdev,
625 &inquiry_cache_fops);
626 debugfs_create_file("link_keys", 0400, hdev->debugfs, hdev,
627 &link_keys_fops);
628 debugfs_create_file("dev_class", 0444, hdev->debugfs, hdev,
629 &dev_class_fops);
630 debugfs_create_file("voice_setting", 0444, hdev->debugfs, hdev,
631 &voice_setting_fops);
632
633 /* If the controller does not support BR/EDR Secure Connections
634 * feature, then the BR/EDR SMP channel shall not be present.
635 *
636 * To test this with Bluetooth 4.0 controllers, create a debugfs
637 * switch that allows forcing BR/EDR SMP support and accepting
638 * cross-transport pairing on non-AES encrypted connections.
639 */
640 if (!lmp_sc_capable(hdev))
641 debugfs_create_file("force_bredr_smp", 0644, hdev->debugfs,
642 hdev, &force_bredr_smp_fops);
643
644 if (lmp_ssp_capable(hdev)) {
645 debugfs_create_file("ssp_debug_mode", 0444, hdev->debugfs,
646 hdev, &ssp_debug_mode_fops);
647 debugfs_create_file("min_encrypt_key_size", 0644, hdev->debugfs,
648 hdev, &min_encrypt_key_size_fops);
649 debugfs_create_file("auto_accept_delay", 0644, hdev->debugfs,
650 hdev, &auto_accept_delay_fops);
651 }
652
653 if (lmp_sniff_capable(hdev)) {
654 debugfs_create_file("idle_timeout", 0644, hdev->debugfs,
655 hdev, &idle_timeout_fops);
656 debugfs_create_file("sniff_min_interval", 0644, hdev->debugfs,
657 hdev, &sniff_min_interval_fops);
658 debugfs_create_file("sniff_max_interval", 0644, hdev->debugfs,
659 hdev, &sniff_max_interval_fops);
660 }
661}
662
663static int identity_show(struct seq_file *f, void *p)
664{
665 struct hci_dev *hdev = f->private;
666 bdaddr_t addr;
667 u8 addr_type;
668
669 hci_dev_lock(hdev);
670
671 hci_copy_identity_address(hdev, &addr, &addr_type);
672
673 seq_printf(f, "%pMR (type %u) %*phN %pMR\n", &addr, addr_type,
674 16, hdev->irk, &hdev->rpa);
675
676 hci_dev_unlock(hdev);
677
678 return 0;
679}
680
681DEFINE_SHOW_ATTRIBUTE(identity);
682
683static int rpa_timeout_set(void *data, u64 val)
684{
685 struct hci_dev *hdev = data;
686
687 /* Require the RPA timeout to be at least 30 seconds and at most
688 * 24 hours.
689 */
690 if (val < 30 || val > (60 * 60 * 24))
691 return -EINVAL;
692
693 hci_dev_lock(hdev);
694 hdev->rpa_timeout = val;
695 hci_dev_unlock(hdev);
696
697 return 0;
698}
699
700static int rpa_timeout_get(void *data, u64 *val)
701{
702 struct hci_dev *hdev = data;
703
704 hci_dev_lock(hdev);
705 *val = hdev->rpa_timeout;
706 hci_dev_unlock(hdev);
707
708 return 0;
709}
710
711DEFINE_DEBUGFS_ATTRIBUTE(rpa_timeout_fops, rpa_timeout_get,
712 rpa_timeout_set, "%llu\n");
713
714static int random_address_show(struct seq_file *f, void *p)
715{
716 struct hci_dev *hdev = f->private;
717
718 hci_dev_lock(hdev);
719 seq_printf(f, "%pMR\n", &hdev->random_addr);
720 hci_dev_unlock(hdev);
721
722 return 0;
723}
724
725DEFINE_SHOW_ATTRIBUTE(random_address);
726
727static int static_address_show(struct seq_file *f, void *p)
728{
729 struct hci_dev *hdev = f->private;
730
731 hci_dev_lock(hdev);
732 seq_printf(f, "%pMR\n", &hdev->static_addr);
733 hci_dev_unlock(hdev);
734
735 return 0;
736}
737
738DEFINE_SHOW_ATTRIBUTE(static_address);
739
740static ssize_t force_static_address_read(struct file *file,
741 char __user *user_buf,
742 size_t count, loff_t *ppos)
743{
744 struct hci_dev *hdev = file->private_data;
745 char buf[3];
746
747 buf[0] = hci_dev_test_flag(hdev, HCI_FORCE_STATIC_ADDR) ? 'Y' : 'N';
748 buf[1] = '\n';
749 buf[2] = '\0';
750 return simple_read_from_buffer(user_buf, count, ppos, buf, 2);
751}
752
753static ssize_t force_static_address_write(struct file *file,
754 const char __user *user_buf,
755 size_t count, loff_t *ppos)
756{
757 struct hci_dev *hdev = file->private_data;
758 bool enable;
759 int err;
760
761 if (hdev_is_powered(hdev))
762 return -EBUSY;
763
764 err = kstrtobool_from_user(user_buf, count, &enable);
765 if (err)
766 return err;
767
768 if (enable == hci_dev_test_flag(hdev, HCI_FORCE_STATIC_ADDR))
769 return -EALREADY;
770
771 hci_dev_change_flag(hdev, HCI_FORCE_STATIC_ADDR);
772
773 return count;
774}
775
776static const struct file_operations force_static_address_fops = {
777 .open = simple_open,
778 .read = force_static_address_read,
779 .write = force_static_address_write,
780 .llseek = default_llseek,
781};
782
783static int white_list_show(struct seq_file *f, void *ptr)
784{
785 struct hci_dev *hdev = f->private;
786 struct bdaddr_list *b;
787
788 hci_dev_lock(hdev);
789 list_for_each_entry(b, &hdev->le_accept_list, list)
790 seq_printf(f, "%pMR (type %u)\n", &b->bdaddr, b->bdaddr_type);
791 hci_dev_unlock(hdev);
792
793 return 0;
794}
795
796DEFINE_SHOW_ATTRIBUTE(white_list);
797
798static int resolv_list_show(struct seq_file *f, void *ptr)
799{
800 struct hci_dev *hdev = f->private;
801 struct bdaddr_list *b;
802
803 hci_dev_lock(hdev);
804 list_for_each_entry(b, &hdev->le_resolv_list, list)
805 seq_printf(f, "%pMR (type %u)\n", &b->bdaddr, b->bdaddr_type);
806 hci_dev_unlock(hdev);
807
808 return 0;
809}
810
811DEFINE_SHOW_ATTRIBUTE(resolv_list);
812
813static int identity_resolving_keys_show(struct seq_file *f, void *ptr)
814{
815 struct hci_dev *hdev = f->private;
816 struct smp_irk *irk;
817
818 rcu_read_lock();
819 list_for_each_entry_rcu(irk, &hdev->identity_resolving_keys, list) {
820 seq_printf(f, "%pMR (type %u) %*phN %pMR\n",
821 &irk->bdaddr, irk->addr_type,
822 16, irk->val, &irk->rpa);
823 }
824 rcu_read_unlock();
825
826 return 0;
827}
828
829DEFINE_SHOW_ATTRIBUTE(identity_resolving_keys);
830
831static int long_term_keys_show(struct seq_file *f, void *ptr)
832{
833 struct hci_dev *hdev = f->private;
834 struct smp_ltk *ltk;
835
836 rcu_read_lock();
837 list_for_each_entry_rcu(ltk, &hdev->long_term_keys, list)
838 seq_printf(f, "%pMR (type %u) %u 0x%02x %u %.4x %.16llx %*phN\n",
839 <k->bdaddr, ltk->bdaddr_type, ltk->authenticated,
840 ltk->type, ltk->enc_size, __le16_to_cpu(ltk->ediv),
841 __le64_to_cpu(ltk->rand), 16, ltk->val);
842 rcu_read_unlock();
843
844 return 0;
845}
846
847DEFINE_SHOW_ATTRIBUTE(long_term_keys);
848
849static int conn_min_interval_set(void *data, u64 val)
850{
851 struct hci_dev *hdev = data;
852
853 if (val < 0x0006 || val > 0x0c80 || val > hdev->le_conn_max_interval)
854 return -EINVAL;
855
856 hci_dev_lock(hdev);
857 hdev->le_conn_min_interval = val;
858 hci_dev_unlock(hdev);
859
860 return 0;
861}
862
863static int conn_min_interval_get(void *data, u64 *val)
864{
865 struct hci_dev *hdev = data;
866
867 hci_dev_lock(hdev);
868 *val = hdev->le_conn_min_interval;
869 hci_dev_unlock(hdev);
870
871 return 0;
872}
873
874DEFINE_DEBUGFS_ATTRIBUTE(conn_min_interval_fops, conn_min_interval_get,
875 conn_min_interval_set, "%llu\n");
876
877static int conn_max_interval_set(void *data, u64 val)
878{
879 struct hci_dev *hdev = data;
880
881 if (val < 0x0006 || val > 0x0c80 || val < hdev->le_conn_min_interval)
882 return -EINVAL;
883
884 hci_dev_lock(hdev);
885 hdev->le_conn_max_interval = val;
886 hci_dev_unlock(hdev);
887
888 return 0;
889}
890
891static int conn_max_interval_get(void *data, u64 *val)
892{
893 struct hci_dev *hdev = data;
894
895 hci_dev_lock(hdev);
896 *val = hdev->le_conn_max_interval;
897 hci_dev_unlock(hdev);
898
899 return 0;
900}
901
902DEFINE_DEBUGFS_ATTRIBUTE(conn_max_interval_fops, conn_max_interval_get,
903 conn_max_interval_set, "%llu\n");
904
905static int conn_latency_set(void *data, u64 val)
906{
907 struct hci_dev *hdev = data;
908
909 if (val > 0x01f3)
910 return -EINVAL;
911
912 hci_dev_lock(hdev);
913 hdev->le_conn_latency = val;
914 hci_dev_unlock(hdev);
915
916 return 0;
917}
918
919static int conn_latency_get(void *data, u64 *val)
920{
921 struct hci_dev *hdev = data;
922
923 hci_dev_lock(hdev);
924 *val = hdev->le_conn_latency;
925 hci_dev_unlock(hdev);
926
927 return 0;
928}
929
930DEFINE_DEBUGFS_ATTRIBUTE(conn_latency_fops, conn_latency_get,
931 conn_latency_set, "%llu\n");
932
933static int supervision_timeout_set(void *data, u64 val)
934{
935 struct hci_dev *hdev = data;
936
937 if (val < 0x000a || val > 0x0c80)
938 return -EINVAL;
939
940 hci_dev_lock(hdev);
941 hdev->le_supv_timeout = val;
942 hci_dev_unlock(hdev);
943
944 return 0;
945}
946
947static int supervision_timeout_get(void *data, u64 *val)
948{
949 struct hci_dev *hdev = data;
950
951 hci_dev_lock(hdev);
952 *val = hdev->le_supv_timeout;
953 hci_dev_unlock(hdev);
954
955 return 0;
956}
957
958DEFINE_DEBUGFS_ATTRIBUTE(supervision_timeout_fops, supervision_timeout_get,
959 supervision_timeout_set, "%llu\n");
960
961static int adv_channel_map_set(void *data, u64 val)
962{
963 struct hci_dev *hdev = data;
964
965 if (val < 0x01 || val > 0x07)
966 return -EINVAL;
967
968 hci_dev_lock(hdev);
969 hdev->le_adv_channel_map = val;
970 hci_dev_unlock(hdev);
971
972 return 0;
973}
974
975static int adv_channel_map_get(void *data, u64 *val)
976{
977 struct hci_dev *hdev = data;
978
979 hci_dev_lock(hdev);
980 *val = hdev->le_adv_channel_map;
981 hci_dev_unlock(hdev);
982
983 return 0;
984}
985
986DEFINE_DEBUGFS_ATTRIBUTE(adv_channel_map_fops, adv_channel_map_get,
987 adv_channel_map_set, "%llu\n");
988
989static int adv_min_interval_set(void *data, u64 val)
990{
991 struct hci_dev *hdev = data;
992
993 if (val < 0x0020 || val > 0x4000 || val > hdev->le_adv_max_interval)
994 return -EINVAL;
995
996 hci_dev_lock(hdev);
997 hdev->le_adv_min_interval = val;
998 hci_dev_unlock(hdev);
999
1000 return 0;
1001}
1002
1003static int adv_min_interval_get(void *data, u64 *val)
1004{
1005 struct hci_dev *hdev = data;
1006
1007 hci_dev_lock(hdev);
1008 *val = hdev->le_adv_min_interval;
1009 hci_dev_unlock(hdev);
1010
1011 return 0;
1012}
1013
1014DEFINE_DEBUGFS_ATTRIBUTE(adv_min_interval_fops, adv_min_interval_get,
1015 adv_min_interval_set, "%llu\n");
1016
1017static int adv_max_interval_set(void *data, u64 val)
1018{
1019 struct hci_dev *hdev = data;
1020
1021 if (val < 0x0020 || val > 0x4000 || val < hdev->le_adv_min_interval)
1022 return -EINVAL;
1023
1024 hci_dev_lock(hdev);
1025 hdev->le_adv_max_interval = val;
1026 hci_dev_unlock(hdev);
1027
1028 return 0;
1029}
1030
1031static int adv_max_interval_get(void *data, u64 *val)
1032{
1033 struct hci_dev *hdev = data;
1034
1035 hci_dev_lock(hdev);
1036 *val = hdev->le_adv_max_interval;
1037 hci_dev_unlock(hdev);
1038
1039 return 0;
1040}
1041
1042DEFINE_DEBUGFS_ATTRIBUTE(adv_max_interval_fops, adv_max_interval_get,
1043 adv_max_interval_set, "%llu\n");
1044
1045static int min_key_size_set(void *data, u64 val)
1046{
1047 struct hci_dev *hdev = data;
1048
1049 hci_dev_lock(hdev);
1050 if (val > hdev->le_max_key_size || val < SMP_MIN_ENC_KEY_SIZE) {
1051 hci_dev_unlock(hdev);
1052 return -EINVAL;
1053 }
1054
1055 hdev->le_min_key_size = val;
1056 hci_dev_unlock(hdev);
1057
1058 return 0;
1059}
1060
1061static int min_key_size_get(void *data, u64 *val)
1062{
1063 struct hci_dev *hdev = data;
1064
1065 hci_dev_lock(hdev);
1066 *val = hdev->le_min_key_size;
1067 hci_dev_unlock(hdev);
1068
1069 return 0;
1070}
1071
1072DEFINE_DEBUGFS_ATTRIBUTE(min_key_size_fops, min_key_size_get,
1073 min_key_size_set, "%llu\n");
1074
1075static int max_key_size_set(void *data, u64 val)
1076{
1077 struct hci_dev *hdev = data;
1078
1079 hci_dev_lock(hdev);
1080 if (val > SMP_MAX_ENC_KEY_SIZE || val < hdev->le_min_key_size) {
1081 hci_dev_unlock(hdev);
1082 return -EINVAL;
1083 }
1084
1085 hdev->le_max_key_size = val;
1086 hci_dev_unlock(hdev);
1087
1088 return 0;
1089}
1090
1091static int max_key_size_get(void *data, u64 *val)
1092{
1093 struct hci_dev *hdev = data;
1094
1095 hci_dev_lock(hdev);
1096 *val = hdev->le_max_key_size;
1097 hci_dev_unlock(hdev);
1098
1099 return 0;
1100}
1101
1102DEFINE_DEBUGFS_ATTRIBUTE(max_key_size_fops, max_key_size_get,
1103 max_key_size_set, "%llu\n");
1104
1105static int auth_payload_timeout_set(void *data, u64 val)
1106{
1107 struct hci_dev *hdev = data;
1108
1109 if (val < 0x0001 || val > 0xffff)
1110 return -EINVAL;
1111
1112 hci_dev_lock(hdev);
1113 hdev->auth_payload_timeout = val;
1114 hci_dev_unlock(hdev);
1115
1116 return 0;
1117}
1118
1119static int auth_payload_timeout_get(void *data, u64 *val)
1120{
1121 struct hci_dev *hdev = data;
1122
1123 hci_dev_lock(hdev);
1124 *val = hdev->auth_payload_timeout;
1125 hci_dev_unlock(hdev);
1126
1127 return 0;
1128}
1129
1130DEFINE_DEBUGFS_ATTRIBUTE(auth_payload_timeout_fops,
1131 auth_payload_timeout_get,
1132 auth_payload_timeout_set, "%llu\n");
1133
1134static ssize_t force_no_mitm_read(struct file *file,
1135 char __user *user_buf,
1136 size_t count, loff_t *ppos)
1137{
1138 struct hci_dev *hdev = file->private_data;
1139 char buf[3];
1140
1141 buf[0] = hci_dev_test_flag(hdev, HCI_FORCE_NO_MITM) ? 'Y' : 'N';
1142 buf[1] = '\n';
1143 buf[2] = '\0';
1144 return simple_read_from_buffer(user_buf, count, ppos, buf, 2);
1145}
1146
1147static ssize_t force_no_mitm_write(struct file *file,
1148 const char __user *user_buf,
1149 size_t count, loff_t *ppos)
1150{
1151 struct hci_dev *hdev = file->private_data;
1152 char buf[32];
1153 size_t buf_size = min(count, (sizeof(buf) - 1));
1154 bool enable;
1155
1156 if (copy_from_user(buf, user_buf, buf_size))
1157 return -EFAULT;
1158
1159 buf[buf_size] = '\0';
1160 if (kstrtobool(buf, &enable))
1161 return -EINVAL;
1162
1163 if (enable == hci_dev_test_flag(hdev, HCI_FORCE_NO_MITM))
1164 return -EALREADY;
1165
1166 hci_dev_change_flag(hdev, HCI_FORCE_NO_MITM);
1167
1168 return count;
1169}
1170
1171static const struct file_operations force_no_mitm_fops = {
1172 .open = simple_open,
1173 .read = force_no_mitm_read,
1174 .write = force_no_mitm_write,
1175 .llseek = default_llseek,
1176};
1177
1178DEFINE_QUIRK_ATTRIBUTE(quirk_strict_duplicate_filter,
1179 HCI_QUIRK_STRICT_DUPLICATE_FILTER);
1180DEFINE_QUIRK_ATTRIBUTE(quirk_simultaneous_discovery,
1181 HCI_QUIRK_SIMULTANEOUS_DISCOVERY);
1182
1183void hci_debugfs_create_le(struct hci_dev *hdev)
1184{
1185 debugfs_create_file("identity", 0400, hdev->debugfs, hdev,
1186 &identity_fops);
1187 debugfs_create_file("rpa_timeout", 0644, hdev->debugfs, hdev,
1188 &rpa_timeout_fops);
1189 debugfs_create_file("random_address", 0444, hdev->debugfs, hdev,
1190 &random_address_fops);
1191 debugfs_create_file("static_address", 0444, hdev->debugfs, hdev,
1192 &static_address_fops);
1193
1194 /* For controllers with a public address, provide a debug
1195 * option to force the usage of the configured static
1196 * address. By default the public address is used.
1197 */
1198 if (bacmp(&hdev->bdaddr, BDADDR_ANY))
1199 debugfs_create_file("force_static_address", 0644,
1200 hdev->debugfs, hdev,
1201 &force_static_address_fops);
1202
1203 debugfs_create_u8("white_list_size", 0444, hdev->debugfs,
1204 &hdev->le_accept_list_size);
1205 debugfs_create_file("white_list", 0444, hdev->debugfs, hdev,
1206 &white_list_fops);
1207 debugfs_create_u8("resolv_list_size", 0444, hdev->debugfs,
1208 &hdev->le_resolv_list_size);
1209 debugfs_create_file("resolv_list", 0444, hdev->debugfs, hdev,
1210 &resolv_list_fops);
1211 debugfs_create_file("identity_resolving_keys", 0400, hdev->debugfs,
1212 hdev, &identity_resolving_keys_fops);
1213 debugfs_create_file("long_term_keys", 0400, hdev->debugfs, hdev,
1214 &long_term_keys_fops);
1215 debugfs_create_file("conn_min_interval", 0644, hdev->debugfs, hdev,
1216 &conn_min_interval_fops);
1217 debugfs_create_file("conn_max_interval", 0644, hdev->debugfs, hdev,
1218 &conn_max_interval_fops);
1219 debugfs_create_file("conn_latency", 0644, hdev->debugfs, hdev,
1220 &conn_latency_fops);
1221 debugfs_create_file("supervision_timeout", 0644, hdev->debugfs, hdev,
1222 &supervision_timeout_fops);
1223 debugfs_create_file("adv_channel_map", 0644, hdev->debugfs, hdev,
1224 &adv_channel_map_fops);
1225 debugfs_create_file("adv_min_interval", 0644, hdev->debugfs, hdev,
1226 &adv_min_interval_fops);
1227 debugfs_create_file("adv_max_interval", 0644, hdev->debugfs, hdev,
1228 &adv_max_interval_fops);
1229 debugfs_create_u16("discov_interleaved_timeout", 0644, hdev->debugfs,
1230 &hdev->discov_interleaved_timeout);
1231 debugfs_create_file("min_key_size", 0644, hdev->debugfs, hdev,
1232 &min_key_size_fops);
1233 debugfs_create_file("max_key_size", 0644, hdev->debugfs, hdev,
1234 &max_key_size_fops);
1235 debugfs_create_file("auth_payload_timeout", 0644, hdev->debugfs, hdev,
1236 &auth_payload_timeout_fops);
1237 debugfs_create_file("force_no_mitm", 0644, hdev->debugfs, hdev,
1238 &force_no_mitm_fops);
1239
1240 debugfs_create_file("quirk_strict_duplicate_filter", 0644,
1241 hdev->debugfs, hdev,
1242 &quirk_strict_duplicate_filter_fops);
1243 debugfs_create_file("quirk_simultaneous_discovery", 0644,
1244 hdev->debugfs, hdev,
1245 &quirk_simultaneous_discovery_fops);
1246}
1247
1248void hci_debugfs_create_conn(struct hci_conn *conn)
1249{
1250 struct hci_dev *hdev = conn->hdev;
1251 char name[6];
1252
1253 if (IS_ERR_OR_NULL(hdev->debugfs) || conn->debugfs)
1254 return;
1255
1256 snprintf(name, sizeof(name), "%u", conn->handle);
1257 conn->debugfs = debugfs_create_dir(name, hdev->debugfs);
1258}
1259
1260static ssize_t dut_mode_read(struct file *file, char __user *user_buf,
1261 size_t count, loff_t *ppos)
1262{
1263 struct hci_dev *hdev = file->private_data;
1264 char buf[3];
1265
1266 buf[0] = hci_dev_test_flag(hdev, HCI_DUT_MODE) ? 'Y' : 'N';
1267 buf[1] = '\n';
1268 buf[2] = '\0';
1269 return simple_read_from_buffer(user_buf, count, ppos, buf, 2);
1270}
1271
1272static ssize_t dut_mode_write(struct file *file, const char __user *user_buf,
1273 size_t count, loff_t *ppos)
1274{
1275 struct hci_dev *hdev = file->private_data;
1276 struct sk_buff *skb;
1277 bool enable;
1278 int err;
1279
1280 if (!test_bit(HCI_UP, &hdev->flags))
1281 return -ENETDOWN;
1282
1283 err = kstrtobool_from_user(user_buf, count, &enable);
1284 if (err)
1285 return err;
1286
1287 if (enable == hci_dev_test_flag(hdev, HCI_DUT_MODE))
1288 return -EALREADY;
1289
1290 hci_req_sync_lock(hdev);
1291 if (enable)
1292 skb = __hci_cmd_sync(hdev, HCI_OP_ENABLE_DUT_MODE, 0, NULL,
1293 HCI_CMD_TIMEOUT);
1294 else
1295 skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL,
1296 HCI_CMD_TIMEOUT);
1297 hci_req_sync_unlock(hdev);
1298
1299 if (IS_ERR(skb))
1300 return PTR_ERR(skb);
1301
1302 kfree_skb(skb);
1303
1304 hci_dev_change_flag(hdev, HCI_DUT_MODE);
1305
1306 return count;
1307}
1308
1309static const struct file_operations dut_mode_fops = {
1310 .open = simple_open,
1311 .read = dut_mode_read,
1312 .write = dut_mode_write,
1313 .llseek = default_llseek,
1314};
1315
1316static ssize_t vendor_diag_read(struct file *file, char __user *user_buf,
1317 size_t count, loff_t *ppos)
1318{
1319 struct hci_dev *hdev = file->private_data;
1320 char buf[3];
1321
1322 buf[0] = hci_dev_test_flag(hdev, HCI_VENDOR_DIAG) ? 'Y' : 'N';
1323 buf[1] = '\n';
1324 buf[2] = '\0';
1325 return simple_read_from_buffer(user_buf, count, ppos, buf, 2);
1326}
1327
1328static ssize_t vendor_diag_write(struct file *file, const char __user *user_buf,
1329 size_t count, loff_t *ppos)
1330{
1331 struct hci_dev *hdev = file->private_data;
1332 bool enable;
1333 int err;
1334
1335 err = kstrtobool_from_user(user_buf, count, &enable);
1336 if (err)
1337 return err;
1338
1339 /* When the diagnostic flags are not persistent and the transport
1340 * is not active or in user channel operation, then there is no need
1341 * for the vendor callback. Instead just store the desired value and
1342 * the setting will be programmed when the controller gets powered on.
1343 */
1344 if (test_bit(HCI_QUIRK_NON_PERSISTENT_DIAG, &hdev->quirks) &&
1345 (!test_bit(HCI_RUNNING, &hdev->flags) ||
1346 hci_dev_test_flag(hdev, HCI_USER_CHANNEL)))
1347 goto done;
1348
1349 hci_req_sync_lock(hdev);
1350 err = hdev->set_diag(hdev, enable);
1351 hci_req_sync_unlock(hdev);
1352
1353 if (err < 0)
1354 return err;
1355
1356done:
1357 if (enable)
1358 hci_dev_set_flag(hdev, HCI_VENDOR_DIAG);
1359 else
1360 hci_dev_clear_flag(hdev, HCI_VENDOR_DIAG);
1361
1362 return count;
1363}
1364
1365static const struct file_operations vendor_diag_fops = {
1366 .open = simple_open,
1367 .read = vendor_diag_read,
1368 .write = vendor_diag_write,
1369 .llseek = default_llseek,
1370};
1371
1372void hci_debugfs_create_basic(struct hci_dev *hdev)
1373{
1374 debugfs_create_file("dut_mode", 0644, hdev->debugfs, hdev,
1375 &dut_mode_fops);
1376
1377 if (hdev->set_diag)
1378 debugfs_create_file("vendor_diag", 0644, hdev->debugfs, hdev,
1379 &vendor_diag_fops);
1380}