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[thirdparty/linux.git] / net / bluetooth / hci_debugfs.c
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60c5f5fb
MH		 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
18f81241 29#include "smp.h"
8331dc48 30#include "hci_request.h"
60c5f5fb
MH		 31#include "hci_debugfs.h"
32
b55d1abf
JP		 33#define DEFINE_QUIRK_ATTRIBUTE(__name, __quirk) \
34static ssize_t __name ## _read(struct file *file, \
35 char __user *user_buf, \
36 size_t count, loff_t *ppos) \
37{ \
38 struct hci_dev *hdev = file->private_data; \
39 char buf[3]; \
40 \
41 buf[0] = test_bit(__quirk, &hdev->quirks) ? 'Y' : 'N'; \
42 buf[1] = '\n'; \
43 buf[2] = '\0'; \
44 return simple_read_from_buffer(user_buf, count, ppos, buf, 2); \
45} \
46 \
47static ssize_t __name ## _write(struct file *file, \
48 const char __user *user_buf, \
49 size_t count, loff_t *ppos) \
50{ \
51 struct hci_dev *hdev = file->private_data; \
b55d1abf 52 bool enable; \
3bf5e97d 53 int err; \
b55d1abf
JP		 54 \
55 if (test_bit(HCI_UP, &hdev->flags)) \
56 return -EBUSY; \
57 \
3bf5e97d
AS		 58 err = kstrtobool_from_user(user_buf, count, &enable); \
59 if (err) \
60 return err; \
b55d1abf
JP		 61 \
62 if (enable == test_bit(__quirk, &hdev->quirks)) \
63 return -EALREADY; \
64 \
65 change_bit(__quirk, &hdev->quirks); \
66 \
67 return count; \
68} \
69 \
70static const struct file_operations __name ## _fops = { \
71 .open = simple_open, \
72 .read = __name ## _read, \
73 .write = __name ## _write, \
74 .llseek = default_llseek, \
75} \
76
5177a838
MH		 77#define DEFINE_INFO_ATTRIBUTE(__name, __field) \
78static int __name ## _show(struct seq_file *f, void *ptr) \
79{ \
80 struct hci_dev *hdev = f->private; \
81 \
82 hci_dev_lock(hdev); \
83 seq_printf(f, "%s\n", hdev->__field ? : ""); \
84 hci_dev_unlock(hdev); \
85 \
86 return 0; \
87} \
88 \
22b371cb
AS		 89DEFINE_SHOW_ATTRIBUTE(__name)
90
40ce72b1
MH		 91static int features_show(struct seq_file *f, void *ptr)
92{
93 struct hci_dev *hdev = f->private;
94 u8 p;
95
96 hci_dev_lock(hdev);
8a950794
AS		 97 for (p = 0; p < HCI_MAX_PAGES && p <= hdev->max_page; p++)
98 seq_printf(f, "%2u: %8ph\n", p, hdev->features[p]);
40ce72b1 99 if (lmp_le_capable(hdev))
8a950794 100 seq_printf(f, "LE: %8ph\n", hdev->le_features);
40ce72b1
MH		 101 hci_dev_unlock(hdev);
102
103 return 0;
104}
105
22b371cb 106DEFINE_SHOW_ATTRIBUTE(features);
40ce72b1 107
c3370de6
MH		 108static int device_id_show(struct seq_file *f, void *ptr)
109{
110 struct hci_dev *hdev = f->private;
111
112 hci_dev_lock(hdev);
113 seq_printf(f, "%4.4x:%4.4x:%4.4x:%4.4x\n", hdev->devid_source,
114 hdev->devid_vendor, hdev->devid_product, hdev->devid_version);
115 hci_dev_unlock(hdev);
116
117 return 0;
118}
119
22b371cb 120DEFINE_SHOW_ATTRIBUTE(device_id);
c3370de6 121
40ce72b1
MH		 122static int device_list_show(struct seq_file *f, void *ptr)
123{
124 struct hci_dev *hdev = f->private;
125 struct hci_conn_params *p;
126 struct bdaddr_list *b;
127
128 hci_dev_lock(hdev);
3d4f9c00 129 list_for_each_entry(b, &hdev->accept_list, list)
40ce72b1
MH		 130 seq_printf(f, "%pMR (type %u)\n", &b->bdaddr, b->bdaddr_type);
131 list_for_each_entry(p, &hdev->le_conn_params, list) {
132 seq_printf(f, "%pMR (type %u) %u\n", &p->addr, p->addr_type,
133 p->auto_connect);
134 }
135 hci_dev_unlock(hdev);
136
137 return 0;
138}
139
22b371cb 140DEFINE_SHOW_ATTRIBUTE(device_list);
40ce72b1
MH		 141
142static int blacklist_show(struct seq_file *f, void *p)
143{
144 struct hci_dev *hdev = f->private;
145 struct bdaddr_list *b;
146
147 hci_dev_lock(hdev);
3d4f9c00 148 list_for_each_entry(b, &hdev->reject_list, list)
40ce72b1
MH		 149 seq_printf(f, "%pMR (type %u)\n", &b->bdaddr, b->bdaddr_type);
150 hci_dev_unlock(hdev);
151
152 return 0;
153}
154
22b371cb 155DEFINE_SHOW_ATTRIBUTE(blacklist);
40ce72b1 156
600a8749
AM		 157static int blocked_keys_show(struct seq_file *f, void *p)
158{
159 struct hci_dev *hdev = f->private;
160 struct blocked_key *key;
161
162 rcu_read_lock();
163 list_for_each_entry_rcu(key, &hdev->blocked_keys, list)
164 seq_printf(f, "%u %*phN\n", key->type, 16, key->val);
165 rcu_read_unlock();
166
167 return 0;
168}
169
170DEFINE_SHOW_ATTRIBUTE(blocked_keys);
171
40ce72b1
MH		 172static int uuids_show(struct seq_file *f, void *p)
173{
174 struct hci_dev *hdev = f->private;
175 struct bt_uuid *uuid;
176
177 hci_dev_lock(hdev);
178 list_for_each_entry(uuid, &hdev->uuids, list) {
179 u8 i, val[16];
180
181 /* The Bluetooth UUID values are stored in big endian,
182 * but with reversed byte order. So convert them into
183 * the right order for the %pUb modifier.
184 */
185 for (i = 0; i < 16; i++)
186 val[i] = uuid->uuid[15 - i];
187
188 seq_printf(f, "%pUb\n", val);
189 }
190 hci_dev_unlock(hdev);
191
3c690a0d 192 return 0;
40ce72b1
MH		 193}
194
22b371cb 195DEFINE_SHOW_ATTRIBUTE(uuids);
40ce72b1 196
6858bcd0
MH		 197static int remote_oob_show(struct seq_file *f, void *ptr)
198{
199 struct hci_dev *hdev = f->private;
200 struct oob_data *data;
201
202 hci_dev_lock(hdev);
203 list_for_each_entry(data, &hdev->remote_oob_data, list) {
204 seq_printf(f, "%pMR (type %u) %u %*phN %*phN %*phN %*phN\n",
205 &data->bdaddr, data->bdaddr_type, data->present,
206 16, data->hash192, 16, data->rand192,
b880ab86 207 16, data->hash256, 16, data->rand256);
6858bcd0
MH		 208 }
209 hci_dev_unlock(hdev);
210
211 return 0;
212}
213
22b371cb 214DEFINE_SHOW_ATTRIBUTE(remote_oob);
6858bcd0 215
40ce72b1
MH		 216static int conn_info_min_age_set(void *data, u64 val)
217{
218 struct hci_dev *hdev = data;
219
220 if (val == 0 || val > hdev->conn_info_max_age)
221 return -EINVAL;
222
223 hci_dev_lock(hdev);
224 hdev->conn_info_min_age = val;
225 hci_dev_unlock(hdev);
226
227 return 0;
228}
229
230static int conn_info_min_age_get(void *data, u64 *val)
231{
232 struct hci_dev *hdev = data;
233
234 hci_dev_lock(hdev);
235 *val = hdev->conn_info_min_age;
236 hci_dev_unlock(hdev);
237
238 return 0;
239}
240
231ee8bd
JZ		 241DEFINE_DEBUGFS_ATTRIBUTE(conn_info_min_age_fops, conn_info_min_age_get,
242 conn_info_min_age_set, "%llu\n");
40ce72b1
MH		 243
244static int conn_info_max_age_set(void *data, u64 val)
245{
246 struct hci_dev *hdev = data;
247
248 if (val == 0 || val < hdev->conn_info_min_age)
249 return -EINVAL;
250
251 hci_dev_lock(hdev);
252 hdev->conn_info_max_age = val;
253 hci_dev_unlock(hdev);
254
255 return 0;
256}
257
258static int conn_info_max_age_get(void *data, u64 *val)
259{
260 struct hci_dev *hdev = data;
261
262 hci_dev_lock(hdev);
263 *val = hdev->conn_info_max_age;
264 hci_dev_unlock(hdev);
265
266 return 0;
267}
268
231ee8bd
JZ		 269DEFINE_DEBUGFS_ATTRIBUTE(conn_info_max_age_fops, conn_info_max_age_get,
270 conn_info_max_age_set, "%llu\n");
40ce72b1 271
0886aea6
MH		 272static ssize_t use_debug_keys_read(struct file *file, char __user *user_buf,
273 size_t count, loff_t *ppos)
274{
275 struct hci_dev *hdev = file->private_data;
276 char buf[3];
277
149b3f13 278 buf[0] = hci_dev_test_flag(hdev, HCI_USE_DEBUG_KEYS) ? 'Y' : 'N';
0886aea6
MH		 279 buf[1] = '\n';
280 buf[2] = '\0';
281 return simple_read_from_buffer(user_buf, count, ppos, buf, 2);
282}
283
284static const struct file_operations use_debug_keys_fops = {
285 .open = simple_open,
286 .read = use_debug_keys_read,
287 .llseek = default_llseek,
288};
289
cb0d2fae
MH		 290static ssize_t sc_only_mode_read(struct file *file, char __user *user_buf,
291 size_t count, loff_t *ppos)
292{
293 struct hci_dev *hdev = file->private_data;
294 char buf[3];
295
149b3f13 296 buf[0] = hci_dev_test_flag(hdev, HCI_SC_ONLY) ? 'Y' : 'N';
cb0d2fae
MH		 297 buf[1] = '\n';
298 buf[2] = '\0';
299 return simple_read_from_buffer(user_buf, count, ppos, buf, 2);
300}
301
302static const struct file_operations sc_only_mode_fops = {
303 .open = simple_open,
304 .read = sc_only_mode_read,
305 .llseek = default_llseek,
306};
307
5177a838
MH		 308DEFINE_INFO_ATTRIBUTE(hardware_info, hw_info);
309DEFINE_INFO_ATTRIBUTE(firmware_info, fw_info);
310
60c5f5fb
MH		 311void hci_debugfs_create_common(struct hci_dev *hdev)
312{
40ce72b1
MH		 313 debugfs_create_file("features", 0444, hdev->debugfs, hdev,
314 &features_fops);
315 debugfs_create_u16("manufacturer", 0444, hdev->debugfs,
316 &hdev->manufacturer);
317 debugfs_create_u8("hci_version", 0444, hdev->debugfs, &hdev->hci_ver);
318 debugfs_create_u16("hci_revision", 0444, hdev->debugfs, &hdev->hci_rev);
5789f37c
MH		 319 debugfs_create_u8("hardware_error", 0444, hdev->debugfs,
320 &hdev->hw_error_code);
c3370de6
MH		 321 debugfs_create_file("device_id", 0444, hdev->debugfs, hdev,
322 &device_id_fops);
5789f37c 323
40ce72b1
MH		 324 debugfs_create_file("device_list", 0444, hdev->debugfs, hdev,
325 &device_list_fops);
326 debugfs_create_file("blacklist", 0444, hdev->debugfs, hdev,
327 &blacklist_fops);
600a8749
AM		 328 debugfs_create_file("blocked_keys", 0444, hdev->debugfs, hdev,
329 &blocked_keys_fops);
40ce72b1 330 debugfs_create_file("uuids", 0444, hdev->debugfs, hdev, &uuids_fops);
6858bcd0
MH		 331 debugfs_create_file("remote_oob", 0400, hdev->debugfs, hdev,
332 &remote_oob_fops);
40ce72b1
MH		 333
334 debugfs_create_file("conn_info_min_age", 0644, hdev->debugfs, hdev,
335 &conn_info_min_age_fops);
336 debugfs_create_file("conn_info_max_age", 0644, hdev->debugfs, hdev,
337 &conn_info_max_age_fops);
cb0d2fae 338
0886aea6
MH		 339 if (lmp_ssp_capable(hdev) || lmp_le_capable(hdev))
340 debugfs_create_file("use_debug_keys", 0444, hdev->debugfs,
341 hdev, &use_debug_keys_fops);
342
cb0d2fae
MH		 343 if (lmp_sc_capable(hdev) || lmp_le_capable(hdev))
344 debugfs_create_file("sc_only_mode", 0444, hdev->debugfs,
345 hdev, &sc_only_mode_fops);
5177a838
MH		 346
347 if (hdev->hw_info)
348 debugfs_create_file("hardware_info", 0444, hdev->debugfs,
349 hdev, &hardware_info_fops);
350
351 if (hdev->fw_info)
352 debugfs_create_file("firmware_info", 0444, hdev->debugfs,
353 hdev, &firmware_info_fops);
60c5f5fb
MH		 354}
355
71c3b60e
MH		 356static int inquiry_cache_show(struct seq_file *f, void *p)
357{
358 struct hci_dev *hdev = f->private;
359 struct discovery_state *cache = &hdev->discovery;
360 struct inquiry_entry *e;
361
362 hci_dev_lock(hdev);
363
364 list_for_each_entry(e, &cache->all, all) {
365 struct inquiry_data *data = &e->data;
366 seq_printf(f, "%pMR %d %d %d 0x%.2x%.2x%.2x 0x%.4x %d %d %u\n",
367 &data->bdaddr,
368 data->pscan_rep_mode, data->pscan_period_mode,
369 data->pscan_mode, data->dev_class[2],
370 data->dev_class[1], data->dev_class[0],
371 __le16_to_cpu(data->clock_offset),
372 data->rssi, data->ssp_mode, e->timestamp);
373 }
374
375 hci_dev_unlock(hdev);
376
377 return 0;
378}
379
22b371cb 380DEFINE_SHOW_ATTRIBUTE(inquiry_cache);
71c3b60e
MH		 381
382static int link_keys_show(struct seq_file *f, void *ptr)
383{
384 struct hci_dev *hdev = f->private;
385 struct link_key *key;
386
387 rcu_read_lock();
388 list_for_each_entry_rcu(key, &hdev->link_keys, list)
389 seq_printf(f, "%pMR %u %*phN %u\n", &key->bdaddr, key->type,
390 HCI_LINK_KEY_SIZE, key->val, key->pin_len);
391 rcu_read_unlock();
392
393 return 0;
394}
395
22b371cb 396DEFINE_SHOW_ATTRIBUTE(link_keys);
71c3b60e
MH		 397
398static int dev_class_show(struct seq_file *f, void *ptr)
399{
400 struct hci_dev *hdev = f->private;
401
402 hci_dev_lock(hdev);
403 seq_printf(f, "0x%.2x%.2x%.2x\n", hdev->dev_class[2],
404 hdev->dev_class[1], hdev->dev_class[0]);
405 hci_dev_unlock(hdev);
406
407 return 0;
408}
409
22b371cb 410DEFINE_SHOW_ATTRIBUTE(dev_class);
71c3b60e
MH		 411
412static int voice_setting_get(void *data, u64 *val)
413{
414 struct hci_dev *hdev = data;
415
416 hci_dev_lock(hdev);
417 *val = hdev->voice_setting;
418 hci_dev_unlock(hdev);
419
420 return 0;
421}
422
231ee8bd
JZ		 423DEFINE_DEBUGFS_ATTRIBUTE(voice_setting_fops, voice_setting_get,
424 NULL, "0x%4.4llx\n");
71c3b60e 425
6e07231a
MH		 426static ssize_t ssp_debug_mode_read(struct file *file, char __user *user_buf,
427 size_t count, loff_t *ppos)
428{
429 struct hci_dev *hdev = file->private_data;
430 char buf[3];
431
149b3f13 432 buf[0] = hdev->ssp_debug_mode ? 'Y' : 'N';
6e07231a
MH		 433 buf[1] = '\n';
434 buf[2] = '\0';
435 return simple_read_from_buffer(user_buf, count, ppos, buf, 2);
436}
437
438static const struct file_operations ssp_debug_mode_fops = {
439 .open = simple_open,
440 .read = ssp_debug_mode_read,
441 .llseek = default_llseek,
442};
443
71c3b60e
MH		 444static int auto_accept_delay_set(void *data, u64 val)
445{
446 struct hci_dev *hdev = data;
447
448 hci_dev_lock(hdev);
449 hdev->auto_accept_delay = val;
450 hci_dev_unlock(hdev);
451
452 return 0;
453}
454
58a96fc3
MH		 455static int min_encrypt_key_size_set(void *data, u64 val)
456{
457 struct hci_dev *hdev = data;
458
459 if (val < 1 || val > 16)
460 return -EINVAL;
461
462 hci_dev_lock(hdev);
463 hdev->min_enc_key_size = val;
464 hci_dev_unlock(hdev);
465
466 return 0;
467}
468
469static int min_encrypt_key_size_get(void *data, u64 *val)
470{
471 struct hci_dev *hdev = data;
472
473 hci_dev_lock(hdev);
474 *val = hdev->min_enc_key_size;
475 hci_dev_unlock(hdev);
476
477 return 0;
478}
479
231ee8bd
JZ		 480DEFINE_DEBUGFS_ATTRIBUTE(min_encrypt_key_size_fops,
481 min_encrypt_key_size_get,
482 min_encrypt_key_size_set, "%llu\n");
58a96fc3 483
71c3b60e
MH		 484static int auto_accept_delay_get(void *data, u64 *val)
485{
486 struct hci_dev *hdev = data;
487
488 hci_dev_lock(hdev);
489 *val = hdev->auto_accept_delay;
490 hci_dev_unlock(hdev);
491
492 return 0;
493}
494
231ee8bd
JZ		 495DEFINE_DEBUGFS_ATTRIBUTE(auto_accept_delay_fops, auto_accept_delay_get,
496 auto_accept_delay_set, "%llu\n");
71c3b60e 497
82493316
CC		 498static ssize_t force_bredr_smp_read(struct file *file,
499 char __user *user_buf,
500 size_t count, loff_t *ppos)
501{
502 struct hci_dev *hdev = file->private_data;
503 char buf[3];
504
505 buf[0] = hci_dev_test_flag(hdev, HCI_FORCE_BREDR_SMP) ? 'Y' : 'N';
506 buf[1] = '\n';
507 buf[2] = '\0';
508 return simple_read_from_buffer(user_buf, count, ppos, buf, 2);
509}
510
511static ssize_t force_bredr_smp_write(struct file *file,
512 const char __user *user_buf,
513 size_t count, loff_t *ppos)
514{
515 struct hci_dev *hdev = file->private_data;
516 bool enable;
517 int err;
518
519 err = kstrtobool_from_user(user_buf, count, &enable);
520 if (err)
521 return err;
522
523 err = smp_force_bredr(hdev, enable);
524 if (err)
525 return err;
526
527 return count;
528}
529
530static const struct file_operations force_bredr_smp_fops = {
531 .open = simple_open,
532 .read = force_bredr_smp_read,
533 .write = force_bredr_smp_write,
534 .llseek = default_llseek,
535};
536
71c3b60e
MH		 537static int idle_timeout_set(void *data, u64 val)
538{
539 struct hci_dev *hdev = data;
540
541 if (val != 0 && (val < 500 || val > 3600000))
542 return -EINVAL;
543
544 hci_dev_lock(hdev);
545 hdev->idle_timeout = val;
546 hci_dev_unlock(hdev);
547
548 return 0;
549}
550
551static int idle_timeout_get(void *data, u64 *val)
552{
553 struct hci_dev *hdev = data;
554
555 hci_dev_lock(hdev);
556 *val = hdev->idle_timeout;
557 hci_dev_unlock(hdev);
558
559 return 0;
560}
561
231ee8bd
JZ		 562DEFINE_DEBUGFS_ATTRIBUTE(idle_timeout_fops, idle_timeout_get,
563 idle_timeout_set, "%llu\n");
71c3b60e
MH		 564
565static int sniff_min_interval_set(void *data, u64 val)
566{
567 struct hci_dev *hdev = data;
568
569 if (val == 0 || val % 2 || val > hdev->sniff_max_interval)
570 return -EINVAL;
571
572 hci_dev_lock(hdev);
573 hdev->sniff_min_interval = val;
574 hci_dev_unlock(hdev);
575
576 return 0;
577}
578
579static int sniff_min_interval_get(void *data, u64 *val)
580{
581 struct hci_dev *hdev = data;
582
583 hci_dev_lock(hdev);
584 *val = hdev->sniff_min_interval;
585 hci_dev_unlock(hdev);
586
587 return 0;
588}
589
231ee8bd
JZ		 590DEFINE_DEBUGFS_ATTRIBUTE(sniff_min_interval_fops, sniff_min_interval_get,
591 sniff_min_interval_set, "%llu\n");
71c3b60e
MH		 592
593static int sniff_max_interval_set(void *data, u64 val)
594{
595 struct hci_dev *hdev = data;
596
597 if (val == 0 || val % 2 || val < hdev->sniff_min_interval)
598 return -EINVAL;
599
600 hci_dev_lock(hdev);
601 hdev->sniff_max_interval = val;
602 hci_dev_unlock(hdev);
603
604 return 0;
605}
606
607static int sniff_max_interval_get(void *data, u64 *val)
608{
609 struct hci_dev *hdev = data;
610
611 hci_dev_lock(hdev);
612 *val = hdev->sniff_max_interval;
613 hci_dev_unlock(hdev);
614
615 return 0;
616}
617
231ee8bd
JZ		 618DEFINE_DEBUGFS_ATTRIBUTE(sniff_max_interval_fops, sniff_max_interval_get,
619 sniff_max_interval_set, "%llu\n");
71c3b60e 620
60c5f5fb
MH		 621void hci_debugfs_create_bredr(struct hci_dev *hdev)
622{
71c3b60e
MH		 623 debugfs_create_file("inquiry_cache", 0444, hdev->debugfs, hdev,
624 &inquiry_cache_fops);
625 debugfs_create_file("link_keys", 0400, hdev->debugfs, hdev,
626 &link_keys_fops);
627 debugfs_create_file("dev_class", 0444, hdev->debugfs, hdev,
628 &dev_class_fops);
629 debugfs_create_file("voice_setting", 0444, hdev->debugfs, hdev,
630 &voice_setting_fops);
631
82493316
CC		 632 /* If the controller does not support BR/EDR Secure Connections
633 * feature, then the BR/EDR SMP channel shall not be present.
634 *
635 * To test this with Bluetooth 4.0 controllers, create a debugfs
636 * switch that allows forcing BR/EDR SMP support and accepting
637 * cross-transport pairing on non-AES encrypted connections.
638 */
639 if (!lmp_sc_capable(hdev))
640 debugfs_create_file("force_bredr_smp", 0644, hdev->debugfs,
641 hdev, &force_bredr_smp_fops);
642
6e07231a
MH		 643 if (lmp_ssp_capable(hdev)) {
644 debugfs_create_file("ssp_debug_mode", 0444, hdev->debugfs,
645 hdev, &ssp_debug_mode_fops);
58a96fc3
MH		 646 debugfs_create_file("min_encrypt_key_size", 0644, hdev->debugfs,
647 hdev, &min_encrypt_key_size_fops);
71c3b60e
MH		 648 debugfs_create_file("auto_accept_delay", 0644, hdev->debugfs,
649 hdev, &auto_accept_delay_fops);
6e07231a 650 }
71c3b60e
MH		 651
652 if (lmp_sniff_capable(hdev)) {
653 debugfs_create_file("idle_timeout", 0644, hdev->debugfs,
654 hdev, &idle_timeout_fops);
655 debugfs_create_file("sniff_min_interval", 0644, hdev->debugfs,
656 hdev, &sniff_min_interval_fops);
657 debugfs_create_file("sniff_max_interval", 0644, hdev->debugfs,
658 hdev, &sniff_max_interval_fops);
659 }
60c5f5fb
MH		 660}
661
3a5c82b7
MH		 662static int identity_show(struct seq_file *f, void *p)
663{
664 struct hci_dev *hdev = f->private;
665 bdaddr_t addr;
666 u8 addr_type;
667
668 hci_dev_lock(hdev);
669
670 hci_copy_identity_address(hdev, &addr, &addr_type);
671
672 seq_printf(f, "%pMR (type %u) %*phN %pMR\n", &addr, addr_type,
673 16, hdev->irk, &hdev->rpa);
674
675 hci_dev_unlock(hdev);
676
677 return 0;
678}
679
22b371cb 680DEFINE_SHOW_ATTRIBUTE(identity);
3a5c82b7
MH		 681
682static int rpa_timeout_set(void *data, u64 val)
683{
684 struct hci_dev *hdev = data;
685
686 /* Require the RPA timeout to be at least 30 seconds and at most
687 * 24 hours.
688 */
689 if (val < 30 || val > (60 * 60 * 24))
690 return -EINVAL;
691
692 hci_dev_lock(hdev);
693 hdev->rpa_timeout = val;
694 hci_dev_unlock(hdev);
695
696 return 0;
697}
698
699static int rpa_timeout_get(void *data, u64 *val)
700{
701 struct hci_dev *hdev = data;
702
703 hci_dev_lock(hdev);
704 *val = hdev->rpa_timeout;
705 hci_dev_unlock(hdev);
706
707 return 0;
708}
709
231ee8bd
JZ		 710DEFINE_DEBUGFS_ATTRIBUTE(rpa_timeout_fops, rpa_timeout_get,
711 rpa_timeout_set, "%llu\n");
3a5c82b7
MH		 712
713static int random_address_show(struct seq_file *f, void *p)
714{
715 struct hci_dev *hdev = f->private;
716
717 hci_dev_lock(hdev);
718 seq_printf(f, "%pMR\n", &hdev->random_addr);
719 hci_dev_unlock(hdev);
720
721 return 0;
722}
723
22b371cb 724DEFINE_SHOW_ATTRIBUTE(random_address);
3a5c82b7
MH		 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
22b371cb 737DEFINE_SHOW_ATTRIBUTE(static_address);
3a5c82b7
MH		 738
739static ssize_t force_static_address_read(struct file *file,
740 char __user *user_buf,
741 size_t count, loff_t *ppos)
742{
743 struct hci_dev *hdev = file->private_data;
744 char buf[3];
745
149b3f13 746 buf[0] = hci_dev_test_flag(hdev, HCI_FORCE_STATIC_ADDR) ? 'Y' : 'N';
3a5c82b7
MH		 747 buf[1] = '\n';
748 buf[2] = '\0';
749 return simple_read_from_buffer(user_buf, count, ppos, buf, 2);
750}
751
752static ssize_t force_static_address_write(struct file *file,
753 const char __user *user_buf,
754 size_t count, loff_t *ppos)
755{
756 struct hci_dev *hdev = file->private_data;
3a5c82b7 757 bool enable;
3bf5e97d 758 int err;
3a5c82b7 759
eeb1aafe 760 if (hdev_is_powered(hdev))
3a5c82b7
MH		 761 return -EBUSY;
762
3bf5e97d
AS		 763 err = kstrtobool_from_user(user_buf, count, &enable);
764 if (err)
765 return err;
3a5c82b7 766
b7cb93e5 767 if (enable == hci_dev_test_flag(hdev, HCI_FORCE_STATIC_ADDR))
3a5c82b7
MH		 768 return -EALREADY;
769
b7cb93e5 770 hci_dev_change_flag(hdev, HCI_FORCE_STATIC_ADDR);
3a5c82b7
MH		 771
772 return count;
773}
774
775static const struct file_operations force_static_address_fops = {
776 .open = simple_open,
777 .read = force_static_address_read,
778 .write = force_static_address_write,
779 .llseek = default_llseek,
780};
781
782static int white_list_show(struct seq_file *f, void *ptr)
783{
784 struct hci_dev *hdev = f->private;
785 struct bdaddr_list *b;
786
787 hci_dev_lock(hdev);
3d4f9c00 788 list_for_each_entry(b, &hdev->le_accept_list, list)
3a5c82b7
MH		 789 seq_printf(f, "%pMR (type %u)\n", &b->bdaddr, b->bdaddr_type);
790 hci_dev_unlock(hdev);
791
792 return 0;
793}
794
22b371cb 795DEFINE_SHOW_ATTRIBUTE(white_list);
3a5c82b7 796
cfdb0c2d
AN		 797static int resolv_list_show(struct seq_file *f, void *ptr)
798{
799 struct hci_dev *hdev = f->private;
800 struct bdaddr_list *b;
801
802 hci_dev_lock(hdev);
803 list_for_each_entry(b, &hdev->le_resolv_list, list)
804 seq_printf(f, "%pMR (type %u)\n", &b->bdaddr, b->bdaddr_type);
805 hci_dev_unlock(hdev);
806
807 return 0;
808}
809
810DEFINE_SHOW_ATTRIBUTE(resolv_list);
811
3a5c82b7
MH		 812static int identity_resolving_keys_show(struct seq_file *f, void *ptr)
813{
814 struct hci_dev *hdev = f->private;
815 struct smp_irk *irk;
816
817 rcu_read_lock();
818 list_for_each_entry_rcu(irk, &hdev->identity_resolving_keys, list) {
819 seq_printf(f, "%pMR (type %u) %*phN %pMR\n",
820 &irk->bdaddr, irk->addr_type,
821 16, irk->val, &irk->rpa);
822 }
823 rcu_read_unlock();
824
825 return 0;
826}
827
22b371cb 828DEFINE_SHOW_ATTRIBUTE(identity_resolving_keys);
3a5c82b7
MH		 829
830static int long_term_keys_show(struct seq_file *f, void *ptr)
831{
832 struct hci_dev *hdev = f->private;
833 struct smp_ltk *ltk;
834
835 rcu_read_lock();
836 list_for_each_entry_rcu(ltk, &hdev->long_term_keys, list)
837 seq_printf(f, "%pMR (type %u) %u 0x%02x %u %.4x %.16llx %*phN\n",
838 &ltk->bdaddr, ltk->bdaddr_type, ltk->authenticated,
839 ltk->type, ltk->enc_size, __le16_to_cpu(ltk->ediv),
840 __le64_to_cpu(ltk->rand), 16, ltk->val);
841 rcu_read_unlock();
842
843 return 0;
844}
845
22b371cb 846DEFINE_SHOW_ATTRIBUTE(long_term_keys);
3a5c82b7
MH		 847
848static int conn_min_interval_set(void *data, u64 val)
849{
850 struct hci_dev *hdev = data;
851
852 if (val < 0x0006 || val > 0x0c80 || val > hdev->le_conn_max_interval)
853 return -EINVAL;
854
855 hci_dev_lock(hdev);
856 hdev->le_conn_min_interval = val;
857 hci_dev_unlock(hdev);
858
859 return 0;
860}
861
862static int conn_min_interval_get(void *data, u64 *val)
863{
864 struct hci_dev *hdev = data;
865
866 hci_dev_lock(hdev);
867 *val = hdev->le_conn_min_interval;
868 hci_dev_unlock(hdev);
869
870 return 0;
871}
872
231ee8bd
JZ		 873DEFINE_DEBUGFS_ATTRIBUTE(conn_min_interval_fops, conn_min_interval_get,
874 conn_min_interval_set, "%llu\n");
3a5c82b7
MH		 875
876static int conn_max_interval_set(void *data, u64 val)
877{
878 struct hci_dev *hdev = data;
879
880 if (val < 0x0006 || val > 0x0c80 || val < hdev->le_conn_min_interval)
881 return -EINVAL;
882
883 hci_dev_lock(hdev);
884 hdev->le_conn_max_interval = val;
885 hci_dev_unlock(hdev);
886
887 return 0;
888}
889
890static int conn_max_interval_get(void *data, u64 *val)
891{
892 struct hci_dev *hdev = data;
893
894 hci_dev_lock(hdev);
895 *val = hdev->le_conn_max_interval;
896 hci_dev_unlock(hdev);
897
898 return 0;
899}
900
231ee8bd
JZ		 901DEFINE_DEBUGFS_ATTRIBUTE(conn_max_interval_fops, conn_max_interval_get,
902 conn_max_interval_set, "%llu\n");
3a5c82b7
MH		 903
904static int conn_latency_set(void *data, u64 val)
905{
906 struct hci_dev *hdev = data;
907
908 if (val > 0x01f3)
909 return -EINVAL;
910
911 hci_dev_lock(hdev);
912 hdev->le_conn_latency = val;
913 hci_dev_unlock(hdev);
914
915 return 0;
916}
917
918static int conn_latency_get(void *data, u64 *val)
919{
920 struct hci_dev *hdev = data;
921
922 hci_dev_lock(hdev);
923 *val = hdev->le_conn_latency;
924 hci_dev_unlock(hdev);
925
926 return 0;
927}
928
231ee8bd
JZ		 929DEFINE_DEBUGFS_ATTRIBUTE(conn_latency_fops, conn_latency_get,
930 conn_latency_set, "%llu\n");
3a5c82b7
MH		 931
932static int supervision_timeout_set(void *data, u64 val)
933{
934 struct hci_dev *hdev = data;
935
936 if (val < 0x000a || val > 0x0c80)
937 return -EINVAL;
938
939 hci_dev_lock(hdev);
940 hdev->le_supv_timeout = val;
941 hci_dev_unlock(hdev);
942
943 return 0;
944}
945
946static int supervision_timeout_get(void *data, u64 *val)
947{
948 struct hci_dev *hdev = data;
949
950 hci_dev_lock(hdev);
951 *val = hdev->le_supv_timeout;
952 hci_dev_unlock(hdev);
953
954 return 0;
955}
956
231ee8bd
JZ		 957DEFINE_DEBUGFS_ATTRIBUTE(supervision_timeout_fops, supervision_timeout_get,
958 supervision_timeout_set, "%llu\n");
3a5c82b7
MH		 959
960static int adv_channel_map_set(void *data, u64 val)
961{
962 struct hci_dev *hdev = data;
963
964 if (val < 0x01 || val > 0x07)
965 return -EINVAL;
966
967 hci_dev_lock(hdev);
968 hdev->le_adv_channel_map = val;
969 hci_dev_unlock(hdev);
970
971 return 0;
972}
973
974static int adv_channel_map_get(void *data, u64 *val)
975{
976 struct hci_dev *hdev = data;
977
978 hci_dev_lock(hdev);
979 *val = hdev->le_adv_channel_map;
980 hci_dev_unlock(hdev);
981
982 return 0;
983}
984
231ee8bd
JZ		 985DEFINE_DEBUGFS_ATTRIBUTE(adv_channel_map_fops, adv_channel_map_get,
986 adv_channel_map_set, "%llu\n");
3a5c82b7
MH		 987
988static int adv_min_interval_set(void *data, u64 val)
989{
990 struct hci_dev *hdev = data;
991
992 if (val < 0x0020 || val > 0x4000 || val > hdev->le_adv_max_interval)
993 return -EINVAL;
994
995 hci_dev_lock(hdev);
996 hdev->le_adv_min_interval = val;
997 hci_dev_unlock(hdev);
998
999 return 0;
1000}
1001
1002static int adv_min_interval_get(void *data, u64 *val)
1003{
1004 struct hci_dev *hdev = data;
1005
1006 hci_dev_lock(hdev);
1007 *val = hdev->le_adv_min_interval;
1008 hci_dev_unlock(hdev);
1009
1010 return 0;
1011}
1012
231ee8bd
JZ		 1013DEFINE_DEBUGFS_ATTRIBUTE(adv_min_interval_fops, adv_min_interval_get,
1014 adv_min_interval_set, "%llu\n");
3a5c82b7
MH		 1015
1016static int adv_max_interval_set(void *data, u64 val)
1017{
1018 struct hci_dev *hdev = data;
1019
1020 if (val < 0x0020 || val > 0x4000 || val < hdev->le_adv_min_interval)
1021 return -EINVAL;
1022
1023 hci_dev_lock(hdev);
1024 hdev->le_adv_max_interval = val;
1025 hci_dev_unlock(hdev);
1026
1027 return 0;
1028}
1029
1030static int adv_max_interval_get(void *data, u64 *val)
1031{
1032 struct hci_dev *hdev = data;
1033
1034 hci_dev_lock(hdev);
1035 *val = hdev->le_adv_max_interval;
1036 hci_dev_unlock(hdev);
1037
1038 return 0;
1039}
1040
231ee8bd
JZ		 1041DEFINE_DEBUGFS_ATTRIBUTE(adv_max_interval_fops, adv_max_interval_get,
1042 adv_max_interval_set, "%llu\n");
3a5c82b7 1043
18f81241
MH		 1044static int min_key_size_set(void *data, u64 val)
1045{
1046 struct hci_dev *hdev = data;
1047
1048 if (val > hdev->le_max_key_size || val < SMP_MIN_ENC_KEY_SIZE)
1049 return -EINVAL;
1050
1051 hci_dev_lock(hdev);
1052 hdev->le_min_key_size = val;
1053 hci_dev_unlock(hdev);
1054
1055 return 0;
1056}
1057
1058static int min_key_size_get(void *data, u64 *val)
1059{
1060 struct hci_dev *hdev = data;
1061
1062 hci_dev_lock(hdev);
1063 *val = hdev->le_min_key_size;
1064 hci_dev_unlock(hdev);
1065
1066 return 0;
1067}
1068
231ee8bd
JZ		 1069DEFINE_DEBUGFS_ATTRIBUTE(min_key_size_fops, min_key_size_get,
1070 min_key_size_set, "%llu\n");
18f81241
MH		 1071
1072static int max_key_size_set(void *data, u64 val)
1073{
1074 struct hci_dev *hdev = data;
1075
1076 if (val > SMP_MAX_ENC_KEY_SIZE || val < hdev->le_min_key_size)
1077 return -EINVAL;
1078
1079 hci_dev_lock(hdev);
1080 hdev->le_max_key_size = val;
1081 hci_dev_unlock(hdev);
1082
1083 return 0;
1084}
1085
1086static int max_key_size_get(void *data, u64 *val)
1087{
1088 struct hci_dev *hdev = data;
1089
1090 hci_dev_lock(hdev);
1091 *val = hdev->le_max_key_size;
1092 hci_dev_unlock(hdev);
1093
1094 return 0;
1095}
1096
231ee8bd
JZ		 1097DEFINE_DEBUGFS_ATTRIBUTE(max_key_size_fops, max_key_size_get,
1098 max_key_size_set, "%llu\n");
18f81241 1099
302975cb
SRK		 1100static int auth_payload_timeout_set(void *data, u64 val)
1101{
1102 struct hci_dev *hdev = data;
1103
1104 if (val < 0x0001 || val > 0xffff)
1105 return -EINVAL;
1106
1107 hci_dev_lock(hdev);
1108 hdev->auth_payload_timeout = val;
1109 hci_dev_unlock(hdev);
1110
1111 return 0;
1112}
1113
1114static int auth_payload_timeout_get(void *data, u64 *val)
1115{
1116 struct hci_dev *hdev = data;
1117
1118 hci_dev_lock(hdev);
1119 *val = hdev->auth_payload_timeout;
1120 hci_dev_unlock(hdev);
1121
1122 return 0;
1123}
1124
231ee8bd
JZ		 1125DEFINE_DEBUGFS_ATTRIBUTE(auth_payload_timeout_fops,
1126 auth_payload_timeout_get,
1127 auth_payload_timeout_set, "%llu\n");
302975cb 1128
c2aa30db
AP		 1129static ssize_t force_no_mitm_read(struct file *file,
1130 char __user *user_buf,
1131 size_t count, loff_t *ppos)
1132{
1133 struct hci_dev *hdev = file->private_data;
1134 char buf[3];
1135
1136 buf[0] = hci_dev_test_flag(hdev, HCI_FORCE_NO_MITM) ? 'Y' : 'N';
1137 buf[1] = '\n';
1138 buf[2] = '\0';
1139 return simple_read_from_buffer(user_buf, count, ppos, buf, 2);
1140}
1141
1142static ssize_t force_no_mitm_write(struct file *file,
1143 const char __user *user_buf,
1144 size_t count, loff_t *ppos)
1145{
1146 struct hci_dev *hdev = file->private_data;
1147 char buf[32];
1148 size_t buf_size = min(count, (sizeof(buf) - 1));
1149 bool enable;
1150
1151 if (copy_from_user(buf, user_buf, buf_size))
1152 return -EFAULT;
1153
1154 buf[buf_size] = '\0';
1155 if (strtobool(buf, &enable))
1156 return -EINVAL;
1157
1158 if (enable == hci_dev_test_flag(hdev, HCI_FORCE_NO_MITM))
1159 return -EALREADY;
1160
1161 hci_dev_change_flag(hdev, HCI_FORCE_NO_MITM);
1162
1163 return count;
1164}
1165
1166static const struct file_operations force_no_mitm_fops = {
1167 .open = simple_open,
1168 .read = force_no_mitm_read,
1169 .write = force_no_mitm_write,
1170 .llseek = default_llseek,
1171};
1172
b55d1abf
JP		 1173DEFINE_QUIRK_ATTRIBUTE(quirk_strict_duplicate_filter,
1174 HCI_QUIRK_STRICT_DUPLICATE_FILTER);
1175DEFINE_QUIRK_ATTRIBUTE(quirk_simultaneous_discovery,
1176 HCI_QUIRK_SIMULTANEOUS_DISCOVERY);
1177
60c5f5fb
MH		 1178void hci_debugfs_create_le(struct hci_dev *hdev)
1179{
3a5c82b7
MH		 1180 debugfs_create_file("identity", 0400, hdev->debugfs, hdev,
1181 &identity_fops);
1182 debugfs_create_file("rpa_timeout", 0644, hdev->debugfs, hdev,
1183 &rpa_timeout_fops);
1184 debugfs_create_file("random_address", 0444, hdev->debugfs, hdev,
1185 &random_address_fops);
1186 debugfs_create_file("static_address", 0444, hdev->debugfs, hdev,
1187 &static_address_fops);
1188
1189 /* For controllers with a public address, provide a debug
1190 * option to force the usage of the configured static
1191 * address. By default the public address is used.
1192 */
1193 if (bacmp(&hdev->bdaddr, BDADDR_ANY))
1194 debugfs_create_file("force_static_address", 0644,
1195 hdev->debugfs, hdev,
1196 &force_static_address_fops);
1197
1198 debugfs_create_u8("white_list_size", 0444, hdev->debugfs,
3d4f9c00 1199 &hdev->le_accept_list_size);
3a5c82b7
MH		 1200 debugfs_create_file("white_list", 0444, hdev->debugfs, hdev,
1201 &white_list_fops);
cfdb0c2d
AN		 1202 debugfs_create_u8("resolv_list_size", 0444, hdev->debugfs,
1203 &hdev->le_resolv_list_size);
1204 debugfs_create_file("resolv_list", 0444, hdev->debugfs, hdev,
1205 &resolv_list_fops);
3a5c82b7
MH		 1206 debugfs_create_file("identity_resolving_keys", 0400, hdev->debugfs,
1207 hdev, &identity_resolving_keys_fops);
1208 debugfs_create_file("long_term_keys", 0400, hdev->debugfs, hdev,
1209 &long_term_keys_fops);
1210 debugfs_create_file("conn_min_interval", 0644, hdev->debugfs, hdev,
1211 &conn_min_interval_fops);
1212 debugfs_create_file("conn_max_interval", 0644, hdev->debugfs, hdev,
1213 &conn_max_interval_fops);
1214 debugfs_create_file("conn_latency", 0644, hdev->debugfs, hdev,
1215 &conn_latency_fops);
1216 debugfs_create_file("supervision_timeout", 0644, hdev->debugfs, hdev,
1217 &supervision_timeout_fops);
1218 debugfs_create_file("adv_channel_map", 0644, hdev->debugfs, hdev,
1219 &adv_channel_map_fops);
1220 debugfs_create_file("adv_min_interval", 0644, hdev->debugfs, hdev,
1221 &adv_min_interval_fops);
1222 debugfs_create_file("adv_max_interval", 0644, hdev->debugfs, hdev,
1223 &adv_max_interval_fops);
1224 debugfs_create_u16("discov_interleaved_timeout", 0644, hdev->debugfs,
1225 &hdev->discov_interleaved_timeout);
18f81241
MH		 1226 debugfs_create_file("min_key_size", 0644, hdev->debugfs, hdev,
1227 &min_key_size_fops);
1228 debugfs_create_file("max_key_size", 0644, hdev->debugfs, hdev,
1229 &max_key_size_fops);
302975cb
SRK		 1230 debugfs_create_file("auth_payload_timeout", 0644, hdev->debugfs, hdev,
1231 &auth_payload_timeout_fops);
c2aa30db
AP		 1232 debugfs_create_file("force_no_mitm", 0644, hdev->debugfs, hdev,
1233 &force_no_mitm_fops);
b55d1abf
JP		 1234
1235 debugfs_create_file("quirk_strict_duplicate_filter", 0644,
1236 hdev->debugfs, hdev,
1237 &quirk_strict_duplicate_filter_fops);
1238 debugfs_create_file("quirk_simultaneous_discovery", 0644,
1239 hdev->debugfs, hdev,
1240 &quirk_simultaneous_discovery_fops);
60c5f5fb 1241}
23b9ceb7
MH		 1242
1243void hci_debugfs_create_conn(struct hci_conn *conn)
1244{
1245 struct hci_dev *hdev = conn->hdev;
1246 char name[6];
1247
7096daba 1248 if (IS_ERR_OR_NULL(hdev->debugfs) || conn->debugfs)
23b9ceb7
MH		 1249 return;
1250
1251 snprintf(name, sizeof(name), "%u", conn->handle);
1252 conn->debugfs = debugfs_create_dir(name, hdev->debugfs);
1253}
8331dc48
LAD		 1254
1255static ssize_t dut_mode_read(struct file *file, char __user *user_buf,
1256 size_t count, loff_t *ppos)
1257{
1258 struct hci_dev *hdev = file->private_data;
1259 char buf[3];
1260
1261 buf[0] = hci_dev_test_flag(hdev, HCI_DUT_MODE) ? 'Y' : 'N';
1262 buf[1] = '\n';
1263 buf[2] = '\0';
1264 return simple_read_from_buffer(user_buf, count, ppos, buf, 2);
1265}
1266
1267static ssize_t dut_mode_write(struct file *file, const char __user *user_buf,
1268 size_t count, loff_t *ppos)
1269{
1270 struct hci_dev *hdev = file->private_data;
1271 struct sk_buff *skb;
1272 bool enable;
1273 int err;
1274
1275 if (!test_bit(HCI_UP, &hdev->flags))
1276 return -ENETDOWN;
1277
1278 err = kstrtobool_from_user(user_buf, count, &enable);
1279 if (err)
1280 return err;
1281
1282 if (enable == hci_dev_test_flag(hdev, HCI_DUT_MODE))
1283 return -EALREADY;
1284
1285 hci_req_sync_lock(hdev);
1286 if (enable)
1287 skb = __hci_cmd_sync(hdev, HCI_OP_ENABLE_DUT_MODE, 0, NULL,
1288 HCI_CMD_TIMEOUT);
1289 else
1290 skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL,
1291 HCI_CMD_TIMEOUT);
1292 hci_req_sync_unlock(hdev);
1293
1294 if (IS_ERR(skb))
1295 return PTR_ERR(skb);
1296
1297 kfree_skb(skb);
1298
1299 hci_dev_change_flag(hdev, HCI_DUT_MODE);
1300
1301 return count;
1302}
1303
1304static const struct file_operations dut_mode_fops = {
1305 .open = simple_open,
1306 .read = dut_mode_read,
1307 .write = dut_mode_write,
1308 .llseek = default_llseek,
1309};
1310
1311static ssize_t vendor_diag_read(struct file *file, char __user *user_buf,
1312 size_t count, loff_t *ppos)
1313{
1314 struct hci_dev *hdev = file->private_data;
1315 char buf[3];
1316
1317 buf[0] = hci_dev_test_flag(hdev, HCI_VENDOR_DIAG) ? 'Y' : 'N';
1318 buf[1] = '\n';
1319 buf[2] = '\0';
1320 return simple_read_from_buffer(user_buf, count, ppos, buf, 2);
1321}
1322
1323static ssize_t vendor_diag_write(struct file *file, const char __user *user_buf,
1324 size_t count, loff_t *ppos)
1325{
1326 struct hci_dev *hdev = file->private_data;
1327 bool enable;
1328 int err;
1329
1330 err = kstrtobool_from_user(user_buf, count, &enable);
1331 if (err)
1332 return err;
1333
1334 /* When the diagnostic flags are not persistent and the transport
1335 * is not active or in user channel operation, then there is no need
1336 * for the vendor callback. Instead just store the desired value and
1337 * the setting will be programmed when the controller gets powered on.
1338 */
1339 if (test_bit(HCI_QUIRK_NON_PERSISTENT_DIAG, &hdev->quirks) &&
1340 (!test_bit(HCI_RUNNING, &hdev->flags) ||
1341 hci_dev_test_flag(hdev, HCI_USER_CHANNEL)))
1342 goto done;
1343
1344 hci_req_sync_lock(hdev);
1345 err = hdev->set_diag(hdev, enable);
1346 hci_req_sync_unlock(hdev);
1347
1348 if (err < 0)
1349 return err;
1350
1351done:
1352 if (enable)
1353 hci_dev_set_flag(hdev, HCI_VENDOR_DIAG);
1354 else
1355 hci_dev_clear_flag(hdev, HCI_VENDOR_DIAG);
1356
1357 return count;
1358}
1359
1360static const struct file_operations vendor_diag_fops = {
1361 .open = simple_open,
1362 .read = vendor_diag_read,
1363 .write = vendor_diag_write,
1364 .llseek = default_llseek,
1365};
1366
1367void hci_debugfs_create_basic(struct hci_dev *hdev)
1368{
1369 debugfs_create_file("dut_mode", 0644, hdev->debugfs, hdev,
1370 &dut_mode_fops);
1371
1372 if (hdev->set_diag)
1373 debugfs_create_file("vendor_diag", 0644, hdev->debugfs, hdev,
1374 &vendor_diag_fops);
1375}
A mirror of Linus' kernel repository