1/* 2 BlueZ - Bluetooth protocol stack for Linux 3 4 Copyright (C) 2014 Intel Corporation 5 6 This program is free software; you can redistribute it and/or modify 7 it under the terms of the GNU General Public License version 2 as 8 published by the Free Software Foundation; 9 10 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS 11 OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 12 FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF THIRD PARTY RIGHTS. 13 IN NO EVENT SHALL THE COPYRIGHT HOLDER(S) AND AUTHOR(S) BE LIABLE FOR ANY 14 CLAIM, OR ANY SPECIAL INDIRECT OR CONSEQUENTIAL DAMAGES, OR ANY DAMAGES 15 WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 16 ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF 17 OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 18 19 ALL LIABILITY, INCLUDING LIABILITY FOR INFRINGEMENT OF ANY PATENTS, 20 COPYRIGHTS, TRADEMARKS OR OTHER RIGHTS, RELATING TO USE OF THIS 21 SOFTWARE IS DISCLAIMED. 22*/ 23 24#include <linux/debugfs.h> 25#include <linux/kstrtox.h> 26 27#include <net/bluetooth/bluetooth.h> 28#include <net/bluetooth/hci_core.h> 29 30#include "smp.h" 31#include "hci_request.h" 32#include "hci_debugfs.h" 33 34#define DEFINE_QUIRK_ATTRIBUTE(__name, __quirk) \ 35static ssize_t __name ## _read(struct file *file, \ 36 char __user *user_buf, \ 37 size_t count, loff_t *ppos) \ 38{ \ 39 struct hci_dev *hdev = file->private_data; \ 40 char buf[3]; \ 41 \ 42 buf[0] = test_bit(__quirk, &hdev->quirks) ? 'Y' : 'N'; \ 43 buf[1] = '\n'; \ 44 buf[2] = '\0'; \ 45 return simple_read_from_buffer(user_buf, count, ppos, buf, 2); \ 46} \ 47 \ 48static ssize_t __name ## _write(struct file *file, \ 49 const char __user *user_buf, \ 50 size_t count, loff_t *ppos) \ 51{ \ 52 struct hci_dev *hdev = file->private_data; \ 53 bool enable; \ 54 int err; \ 55 \ 56 if (test_bit(HCI_UP, &hdev->flags)) \ 57 return -EBUSY; \ 58 \ 59 err = kstrtobool_from_user(user_buf, count, &enable); \ 60 if (err) \ 61 return err; \ 62 \ 63 if (enable == test_bit(__quirk, &hdev->quirks)) \ 64 return -EALREADY; \ 65 \ 66 change_bit(__quirk, &hdev->quirks); \ 67 \ 68 return count; \ 69} \ 70 \ 71static const struct file_operations __name ## _fops = { \ 72 .open = simple_open, \ 73 .read = __name ## _read, \ 74 .write = __name ## _write, \ 75 .llseek = default_llseek, \ 76} \ 77 78#define DEFINE_INFO_ATTRIBUTE(__name, __field) \ 79static int __name ## _show(struct seq_file *f, void *ptr) \ 80{ \ 81 struct hci_dev *hdev = f->private; \ 82 \ 83 hci_dev_lock(hdev); \ 84 seq_printf(f, "%s\n", hdev->__field ? : ""); \ 85 hci_dev_unlock(hdev); \ 86 \ 87 return 0; \ 88} \ 89 \ 90DEFINE_SHOW_ATTRIBUTE(__name) 91 92static int features_show(struct seq_file *f, void *ptr) 93{ 94 struct hci_dev *hdev = f->private; 95 u8 p; 96 97 hci_dev_lock(hdev); 98 for (p = 0; p < HCI_MAX_PAGES && p <= hdev->max_page; p++) 99 seq_printf(f, "%2u: %8ph\n", p, hdev->features[p]); 100 if (lmp_le_capable(hdev)) 101 seq_printf(f, "LE: %8ph\n", hdev->le_features); 102 hci_dev_unlock(hdev); 103 104 return 0; 105} 106 107DEFINE_SHOW_ATTRIBUTE(features); 108 109static int device_id_show(struct seq_file *f, void *ptr) 110{ 111 struct hci_dev *hdev = f->private; 112 113 hci_dev_lock(hdev); 114 seq_printf(f, "%4.4x:%4.4x:%4.4x:%4.4x\n", hdev->devid_source, 115 hdev->devid_vendor, hdev->devid_product, hdev->devid_version); 116 hci_dev_unlock(hdev); 117 118 return 0; 119} 120 121DEFINE_SHOW_ATTRIBUTE(device_id); 122 123static int device_list_show(struct seq_file *f, void *ptr) 124{ 125 struct hci_dev *hdev = f->private; 126 struct hci_conn_params *p; 127 struct bdaddr_list *b; 128 129 hci_dev_lock(hdev); 130 list_for_each_entry(b, &hdev->accept_list, list) 131 seq_printf(f, "%pMR (type %u)\n", &b->bdaddr, b->bdaddr_type); 132 list_for_each_entry(p, &hdev->le_conn_params, list) { 133 seq_printf(f, "%pMR (type %u) %u\n", &p->addr, p->addr_type, 134 p->auto_connect); 135 } 136 hci_dev_unlock(hdev); 137 138 return 0; 139} 140 141DEFINE_SHOW_ATTRIBUTE(device_list); 142 143static int blacklist_show(struct seq_file *f, void *p) 144{ 145 struct hci_dev *hdev = f->private; 146 struct bdaddr_list *b; 147 148 hci_dev_lock(hdev); 149 list_for_each_entry(b, &hdev->reject_list, list) 150 seq_printf(f, "%pMR (type %u)\n", &b->bdaddr, b->bdaddr_type); 151 hci_dev_unlock(hdev); 152 153 return 0; 154} 155 156DEFINE_SHOW_ATTRIBUTE(blacklist); 157 158static int blocked_keys_show(struct seq_file *f, void *p) 159{ 160 struct hci_dev *hdev = f->private; 161 struct blocked_key *key; 162 163 rcu_read_lock(); 164 list_for_each_entry_rcu(key, &hdev->blocked_keys, list) 165 seq_printf(f, "%u %*phN\n", key->type, 16, key->val); 166 rcu_read_unlock(); 167 168 return 0; 169} 170 171DEFINE_SHOW_ATTRIBUTE(blocked_keys); 172 173static int uuids_show(struct seq_file *f, void *p) 174{ 175 struct hci_dev *hdev = f->private; 176 struct bt_uuid *uuid; 177 178 hci_dev_lock(hdev); 179 list_for_each_entry(uuid, &hdev->uuids, list) { 180 u8 i, val[16]; 181 182 /* The Bluetooth UUID values are stored in big endian, 183 * but with reversed byte order. So convert them into 184 * the right order for the %pUb modifier. 185 */ 186 for (i = 0; i < 16; i++) 187 val[i] = uuid->uuid[15 - i]; 188 189 seq_printf(f, "%pUb\n", val); 190 } 191 hci_dev_unlock(hdev); 192 193 return 0; 194} 195 196DEFINE_SHOW_ATTRIBUTE(uuids); 197 198static int remote_oob_show(struct seq_file *f, void *ptr) 199{ 200 struct hci_dev *hdev = f->private; 201 struct oob_data *data; 202 203 hci_dev_lock(hdev); 204 list_for_each_entry(data, &hdev->remote_oob_data, list) { 205 seq_printf(f, "%pMR (type %u) %u %*phN %*phN %*phN %*phN\n", 206 &data->bdaddr, data->bdaddr_type, data->present, 207 16, data->hash192, 16, data->rand192, 208 16, data->hash256, 16, data->rand256); 209 } 210 hci_dev_unlock(hdev); 211 212 return 0; 213} 214 215DEFINE_SHOW_ATTRIBUTE(remote_oob); 216 217static int conn_info_min_age_set(void *data, u64 val) 218{ 219 struct hci_dev *hdev = data; 220 221 hci_dev_lock(hdev); 222 if (val == 0 || val > hdev->conn_info_max_age) { 223 hci_dev_unlock(hdev); 224 return -EINVAL; 225 } 226 227 hdev->conn_info_min_age = val; 228 hci_dev_unlock(hdev); 229 230 return 0; 231} 232 233static int conn_info_min_age_get(void *data, u64 *val) 234{ 235 struct hci_dev *hdev = data; 236 237 hci_dev_lock(hdev); 238 *val = hdev->conn_info_min_age; 239 hci_dev_unlock(hdev); 240 241 return 0; 242} 243 244DEFINE_DEBUGFS_ATTRIBUTE(conn_info_min_age_fops, conn_info_min_age_get, 245 conn_info_min_age_set, "%llu\n"); 246 247static int conn_info_max_age_set(void *data, u64 val) 248{ 249 struct hci_dev *hdev = data; 250 251 hci_dev_lock(hdev); 252 if (val == 0 || val < hdev->conn_info_min_age) { 253 hci_dev_unlock(hdev); 254 return -EINVAL; 255 } 256 257 hdev->conn_info_max_age = val; 258 hci_dev_unlock(hdev); 259 260 return 0; 261} 262 263static int conn_info_max_age_get(void *data, u64 *val) 264{ 265 struct hci_dev *hdev = data; 266 267 hci_dev_lock(hdev); 268 *val = hdev->conn_info_max_age; 269 hci_dev_unlock(hdev); 270 271 return 0; 272} 273 274DEFINE_DEBUGFS_ATTRIBUTE(conn_info_max_age_fops, conn_info_max_age_get, 275 conn_info_max_age_set, "%llu\n"); 276 277static ssize_t use_debug_keys_read(struct file *file, char __user *user_buf, 278 size_t count, loff_t *ppos) 279{ 280 struct hci_dev *hdev = file->private_data; 281 char buf[3]; 282 283 buf[0] = hci_dev_test_flag(hdev, HCI_USE_DEBUG_KEYS) ? 'Y' : 'N'; 284 buf[1] = '\n'; 285 buf[2] = '\0'; 286 return simple_read_from_buffer(user_buf, count, ppos, buf, 2); 287} 288 289static const struct file_operations use_debug_keys_fops = { 290 .open = simple_open, 291 .read = use_debug_keys_read, 292 .llseek = default_llseek, 293}; 294 295static ssize_t sc_only_mode_read(struct file *file, char __user *user_buf, 296 size_t count, loff_t *ppos) 297{ 298 struct hci_dev *hdev = file->private_data; 299 char buf[3]; 300 301 buf[0] = hci_dev_test_flag(hdev, HCI_SC_ONLY) ? 'Y' : 'N'; 302 buf[1] = '\n'; 303 buf[2] = '\0'; 304 return simple_read_from_buffer(user_buf, count, ppos, buf, 2); 305} 306 307static const struct file_operations sc_only_mode_fops = { 308 .open = simple_open, 309 .read = sc_only_mode_read, 310 .llseek = default_llseek, 311}; 312 313DEFINE_INFO_ATTRIBUTE(hardware_info, hw_info); 314DEFINE_INFO_ATTRIBUTE(firmware_info, fw_info); 315 316void hci_debugfs_create_common(struct hci_dev *hdev) 317{ 318 debugfs_create_file("features", 0444, hdev->debugfs, hdev, 319 &features_fops); 320 debugfs_create_u16("manufacturer", 0444, hdev->debugfs, 321 &hdev->manufacturer); 322 debugfs_create_u8("hci_version", 0444, hdev->debugfs, &hdev->hci_ver); 323 debugfs_create_u16("hci_revision", 0444, hdev->debugfs, &hdev->hci_rev); 324 debugfs_create_u8("hardware_error", 0444, hdev->debugfs, 325 &hdev->hw_error_code); 326 debugfs_create_file("device_id", 0444, hdev->debugfs, hdev, 327 &device_id_fops); 328 329 debugfs_create_file("device_list", 0444, hdev->debugfs, hdev, 330 &device_list_fops); 331 debugfs_create_file("blacklist", 0444, hdev->debugfs, hdev, 332 &blacklist_fops); 333 debugfs_create_file("blocked_keys", 0444, hdev->debugfs, hdev, 334 &blocked_keys_fops); 335 debugfs_create_file("uuids", 0444, hdev->debugfs, hdev, &uuids_fops); 336 debugfs_create_file("remote_oob", 0400, hdev->debugfs, hdev, 337 &remote_oob_fops); 338 339 debugfs_create_file("conn_info_min_age", 0644, hdev->debugfs, hdev, 340 &conn_info_min_age_fops); 341 debugfs_create_file("conn_info_max_age", 0644, hdev->debugfs, hdev, 342 &conn_info_max_age_fops); 343 344 if (lmp_ssp_capable(hdev) || lmp_le_capable(hdev)) 345 debugfs_create_file("use_debug_keys", 0444, hdev->debugfs, 346 hdev, &use_debug_keys_fops); 347 348 if (lmp_sc_capable(hdev) || lmp_le_capable(hdev)) 349 debugfs_create_file("sc_only_mode", 0444, hdev->debugfs, 350 hdev, &sc_only_mode_fops); 351 352 if (hdev->hw_info) 353 debugfs_create_file("hardware_info", 0444, hdev->debugfs, 354 hdev, &hardware_info_fops); 355 356 if (hdev->fw_info) 357 debugfs_create_file("firmware_info", 0444, hdev->debugfs, 358 hdev, &firmware_info_fops); 359} 360 361static int inquiry_cache_show(struct seq_file *f, void *p) 362{ 363 struct hci_dev *hdev = f->private; 364 struct discovery_state *cache = &hdev->discovery; 365 struct inquiry_entry *e; 366 367 hci_dev_lock(hdev); 368 369 list_for_each_entry(e, &cache->all, all) { 370 struct inquiry_data *data = &e->data; 371 seq_printf(f, "%pMR %d %d %d 0x%.2x%.2x%.2x 0x%.4x %d %d %u\n", 372 &data->bdaddr, 373 data->pscan_rep_mode, data->pscan_period_mode, 374 data->pscan_mode, data->dev_class[2], 375 data->dev_class[1], data->dev_class[0], 376 __le16_to_cpu(data->clock_offset), 377 data->rssi, data->ssp_mode, e->timestamp); 378 } 379 380 hci_dev_unlock(hdev); 381 382 return 0; 383} 384 385DEFINE_SHOW_ATTRIBUTE(inquiry_cache); 386 387static int link_keys_show(struct seq_file *f, void *ptr) 388{ 389 struct hci_dev *hdev = f->private; 390 struct link_key *key; 391 392 rcu_read_lock(); 393 list_for_each_entry_rcu(key, &hdev->link_keys, list) 394 seq_printf(f, "%pMR %u %*phN %u\n", &key->bdaddr, key->type, 395 HCI_LINK_KEY_SIZE, key->val, key->pin_len); 396 rcu_read_unlock(); 397 398 return 0; 399} 400 401DEFINE_SHOW_ATTRIBUTE(link_keys); 402 403static int dev_class_show(struct seq_file *f, void *ptr) 404{ 405 struct hci_dev *hdev = f->private; 406 407 hci_dev_lock(hdev); 408 seq_printf(f, "0x%.2x%.2x%.2x\n", hdev->dev_class[2], 409 hdev->dev_class[1], hdev->dev_class[0]); 410 hci_dev_unlock(hdev); 411 412 return 0; 413} 414 415DEFINE_SHOW_ATTRIBUTE(dev_class); 416 417static int voice_setting_get(void *data, u64 *val) 418{ 419 struct hci_dev *hdev = data; 420 421 hci_dev_lock(hdev); 422 *val = hdev->voice_setting; 423 hci_dev_unlock(hdev); 424 425 return 0; 426} 427 428DEFINE_DEBUGFS_ATTRIBUTE(voice_setting_fops, voice_setting_get, 429 NULL, "0x%4.4llx\n"); 430 431static ssize_t ssp_debug_mode_read(struct file *file, char __user *user_buf, 432 size_t count, loff_t *ppos) 433{ 434 struct hci_dev *hdev = file->private_data; 435 char buf[3]; 436 437 buf[0] = hdev->ssp_debug_mode ? 'Y' : 'N'; 438 buf[1] = '\n'; 439 buf[2] = '\0'; 440 return simple_read_from_buffer(user_buf, count, ppos, buf, 2); 441} 442 443static const struct file_operations ssp_debug_mode_fops = { 444 .open = simple_open, 445 .read = ssp_debug_mode_read, 446 .llseek = default_llseek, 447}; 448 449static int auto_accept_delay_set(void *data, u64 val) 450{ 451 struct hci_dev *hdev = data; 452 453 hci_dev_lock(hdev); 454 hdev->auto_accept_delay = val; 455 hci_dev_unlock(hdev); 456 457 return 0; 458} 459 460static int min_encrypt_key_size_set(void *data, u64 val) 461{ 462 struct hci_dev *hdev = data; 463 464 if (val < 1 || val > 16) 465 return -EINVAL; 466 467 hci_dev_lock(hdev); 468 hdev->min_enc_key_size = val; 469 hci_dev_unlock(hdev); 470 471 return 0; 472} 473 474static int min_encrypt_key_size_get(void *data, u64 *val) 475{ 476 struct hci_dev *hdev = data; 477 478 hci_dev_lock(hdev); 479 *val = hdev->min_enc_key_size; 480 hci_dev_unlock(hdev); 481 482 return 0; 483} 484 485DEFINE_DEBUGFS_ATTRIBUTE(min_encrypt_key_size_fops, 486 min_encrypt_key_size_get, 487 min_encrypt_key_size_set, "%llu\n"); 488 489static int auto_accept_delay_get(void *data, u64 *val) 490{ 491 struct hci_dev *hdev = data; 492 493 hci_dev_lock(hdev); 494 *val = hdev->auto_accept_delay; 495 hci_dev_unlock(hdev); 496 497 return 0; 498} 499 500DEFINE_DEBUGFS_ATTRIBUTE(auto_accept_delay_fops, auto_accept_delay_get, 501 auto_accept_delay_set, "%llu\n"); 502 503static ssize_t force_bredr_smp_read(struct file *file, 504 char __user *user_buf, 505 size_t count, loff_t *ppos) 506{ 507 struct hci_dev *hdev = file->private_data; 508 char buf[3]; 509 510 buf[0] = hci_dev_test_flag(hdev, HCI_FORCE_BREDR_SMP) ? 'Y' : 'N'; 511 buf[1] = '\n'; 512 buf[2] = '\0'; 513 return simple_read_from_buffer(user_buf, count, ppos, buf, 2); 514} 515 516static ssize_t force_bredr_smp_write(struct file *file, 517 const char __user *user_buf, 518 size_t count, loff_t *ppos) 519{ 520 struct hci_dev *hdev = file->private_data; 521 bool enable; 522 int err; 523 524 err = kstrtobool_from_user(user_buf, count, &enable); 525 if (err) 526 return err; 527 528 err = smp_force_bredr(hdev, enable); 529 if (err) 530 return err; 531 532 return count; 533} 534 535static const struct file_operations force_bredr_smp_fops = { 536 .open = simple_open, 537 .read = force_bredr_smp_read, 538 .write = force_bredr_smp_write, 539 .llseek = default_llseek, 540}; 541 542static int idle_timeout_set(void *data, u64 val) 543{ 544 struct hci_dev *hdev = data; 545 546 if (val != 0 && (val < 500 || val > 3600000)) 547 return -EINVAL; 548 549 hci_dev_lock(hdev); 550 hdev->idle_timeout = val; 551 hci_dev_unlock(hdev); 552 553 return 0; 554} 555 556static int idle_timeout_get(void *data, u64 *val) 557{ 558 struct hci_dev *hdev = data; 559 560 hci_dev_lock(hdev); 561 *val = hdev->idle_timeout; 562 hci_dev_unlock(hdev); 563 564 return 0; 565} 566 567DEFINE_DEBUGFS_ATTRIBUTE(idle_timeout_fops, idle_timeout_get, 568 idle_timeout_set, "%llu\n"); 569 570static int sniff_min_interval_set(void *data, u64 val) 571{ 572 struct hci_dev *hdev = data; 573 574 hci_dev_lock(hdev); 575 if (val == 0 || val % 2 || val > hdev->sniff_max_interval) { 576 hci_dev_unlock(hdev); 577 return -EINVAL; 578 } 579 580 hdev->sniff_min_interval = val; 581 hci_dev_unlock(hdev); 582 583 return 0; 584} 585 586static int sniff_min_interval_get(void *data, u64 *val) 587{ 588 struct hci_dev *hdev = data; 589 590 hci_dev_lock(hdev); 591 *val = hdev->sniff_min_interval; 592 hci_dev_unlock(hdev); 593 594 return 0; 595} 596 597DEFINE_DEBUGFS_ATTRIBUTE(sniff_min_interval_fops, sniff_min_interval_get, 598 sniff_min_interval_set, "%llu\n"); 599 600static int sniff_max_interval_set(void *data, u64 val) 601{ 602 struct hci_dev *hdev = data; 603 604 hci_dev_lock(hdev); 605 if (val == 0 || val % 2 || val < hdev->sniff_min_interval) { 606 hci_dev_unlock(hdev); 607 return -EINVAL; 608 } 609 610 hdev->sniff_max_interval = val; 611 hci_dev_unlock(hdev); 612 613 return 0; 614} 615 616static int sniff_max_interval_get(void *data, u64 *val) 617{ 618 struct hci_dev *hdev = data; 619 620 hci_dev_lock(hdev); 621 *val = hdev->sniff_max_interval; 622 hci_dev_unlock(hdev); 623 624 return 0; 625} 626 627DEFINE_DEBUGFS_ATTRIBUTE(sniff_max_interval_fops, sniff_max_interval_get, 628 sniff_max_interval_set, "%llu\n"); 629 630void hci_debugfs_create_bredr(struct hci_dev *hdev) 631{ 632 debugfs_create_file("inquiry_cache", 0444, hdev->debugfs, hdev, 633 &inquiry_cache_fops); 634 debugfs_create_file("link_keys", 0400, hdev->debugfs, hdev, 635 &link_keys_fops); 636 debugfs_create_file("dev_class", 0444, hdev->debugfs, hdev, 637 &dev_class_fops); 638 debugfs_create_file("voice_setting", 0444, hdev->debugfs, hdev, 639 &voice_setting_fops); 640 641 /* If the controller does not support BR/EDR Secure Connections 642 * feature, then the BR/EDR SMP channel shall not be present. 643 * 644 * To test this with Bluetooth 4.0 controllers, create a debugfs 645 * switch that allows forcing BR/EDR SMP support and accepting 646 * cross-transport pairing on non-AES encrypted connections. 647 */ 648 if (!lmp_sc_capable(hdev)) 649 debugfs_create_file("force_bredr_smp", 0644, hdev->debugfs, 650 hdev, &force_bredr_smp_fops); 651 652 if (lmp_ssp_capable(hdev)) { 653 debugfs_create_file("ssp_debug_mode", 0444, hdev->debugfs, 654 hdev, &ssp_debug_mode_fops); 655 debugfs_create_file("min_encrypt_key_size", 0644, hdev->debugfs, 656 hdev, &min_encrypt_key_size_fops); 657 debugfs_create_file("auto_accept_delay", 0644, hdev->debugfs, 658 hdev, &auto_accept_delay_fops); 659 } 660 661 if (lmp_sniff_capable(hdev)) { 662 debugfs_create_file("idle_timeout", 0644, hdev->debugfs, 663 hdev, &idle_timeout_fops); 664 debugfs_create_file("sniff_min_interval", 0644, hdev->debugfs, 665 hdev, &sniff_min_interval_fops); 666 debugfs_create_file("sniff_max_interval", 0644, hdev->debugfs, 667 hdev, &sniff_max_interval_fops); 668 } 669} 670 671static int identity_show(struct seq_file *f, void *p) 672{ 673 struct hci_dev *hdev = f->private; 674 bdaddr_t addr; 675 u8 addr_type; 676 677 hci_dev_lock(hdev); 678 679 hci_copy_identity_address(hdev, &addr, &addr_type); 680 681 seq_printf(f, "%pMR (type %u) %*phN %pMR\n", &addr, addr_type, 682 16, hdev->irk, &hdev->rpa); 683 684 hci_dev_unlock(hdev); 685 686 return 0; 687} 688 689DEFINE_SHOW_ATTRIBUTE(identity); 690 691static int rpa_timeout_set(void *data, u64 val) 692{ 693 struct hci_dev *hdev = data; 694 695 /* Require the RPA timeout to be at least 30 seconds and at most 696 * 24 hours. 697 */ 698 if (val < 30 || val > (60 * 60 * 24)) 699 return -EINVAL; 700 701 hci_dev_lock(hdev); 702 hdev->rpa_timeout = val; 703 hci_dev_unlock(hdev); 704 705 return 0; 706} 707 708static int rpa_timeout_get(void *data, u64 *val) 709{ 710 struct hci_dev *hdev = data; 711 712 hci_dev_lock(hdev); 713 *val = hdev->rpa_timeout; 714 hci_dev_unlock(hdev); 715 716 return 0; 717} 718 719DEFINE_DEBUGFS_ATTRIBUTE(rpa_timeout_fops, rpa_timeout_get, 720 rpa_timeout_set, "%llu\n"); 721 722static int random_address_show(struct seq_file *f, void *p) 723{ 724 struct hci_dev *hdev = f->private; 725 726 hci_dev_lock(hdev); 727 seq_printf(f, "%pMR\n", &hdev->random_addr); 728 hci_dev_unlock(hdev); 729 730 return 0; 731} 732 733DEFINE_SHOW_ATTRIBUTE(random_address); 734 735static int static_address_show(struct seq_file *f, void *p) 736{ 737 struct hci_dev *hdev = f->private; 738 739 hci_dev_lock(hdev); 740 seq_printf(f, "%pMR\n", &hdev->static_addr); 741 hci_dev_unlock(hdev); 742 743 return 0; 744} 745 746DEFINE_SHOW_ATTRIBUTE(static_address); 747 748static ssize_t force_static_address_read(struct file *file, 749 char __user *user_buf, 750 size_t count, loff_t *ppos) 751{ 752 struct hci_dev *hdev = file->private_data; 753 char buf[3]; 754 755 buf[0] = hci_dev_test_flag(hdev, HCI_FORCE_STATIC_ADDR) ? 'Y' : 'N'; 756 buf[1] = '\n'; 757 buf[2] = '\0'; 758 return simple_read_from_buffer(user_buf, count, ppos, buf, 2); 759} 760 761static ssize_t force_static_address_write(struct file *file, 762 const char __user *user_buf, 763 size_t count, loff_t *ppos) 764{ 765 struct hci_dev *hdev = file->private_data; 766 bool enable; 767 int err; 768 769 if (hdev_is_powered(hdev)) 770 return -EBUSY; 771 772 err = kstrtobool_from_user(user_buf, count, &enable); 773 if (err) 774 return err; 775 776 if (enable == hci_dev_test_flag(hdev, HCI_FORCE_STATIC_ADDR)) 777 return -EALREADY; 778 779 hci_dev_change_flag(hdev, HCI_FORCE_STATIC_ADDR); 780 781 return count; 782} 783 784static const struct file_operations force_static_address_fops = { 785 .open = simple_open, 786 .read = force_static_address_read, 787 .write = force_static_address_write, 788 .llseek = default_llseek, 789}; 790 791static int white_list_show(struct seq_file *f, void *ptr) 792{ 793 struct hci_dev *hdev = f->private; 794 struct bdaddr_list *b; 795 796 hci_dev_lock(hdev); 797 list_for_each_entry(b, &hdev->le_accept_list, list) 798 seq_printf(f, "%pMR (type %u)\n", &b->bdaddr, b->bdaddr_type); 799 hci_dev_unlock(hdev); 800 801 return 0; 802} 803 804DEFINE_SHOW_ATTRIBUTE(white_list); 805 806static int resolv_list_show(struct seq_file *f, void *ptr) 807{ 808 struct hci_dev *hdev = f->private; 809 struct bdaddr_list *b; 810 811 hci_dev_lock(hdev); 812 list_for_each_entry(b, &hdev->le_resolv_list, list) 813 seq_printf(f, "%pMR (type %u)\n", &b->bdaddr, b->bdaddr_type); 814 hci_dev_unlock(hdev); 815 816 return 0; 817} 818 819DEFINE_SHOW_ATTRIBUTE(resolv_list); 820 821static int identity_resolving_keys_show(struct seq_file *f, void *ptr) 822{ 823 struct hci_dev *hdev = f->private; 824 struct smp_irk *irk; 825 826 rcu_read_lock(); 827 list_for_each_entry_rcu(irk, &hdev->identity_resolving_keys, list) { 828 seq_printf(f, "%pMR (type %u) %*phN %pMR\n", 829 &irk->bdaddr, irk->addr_type, 830 16, irk->val, &irk->rpa); 831 } 832 rcu_read_unlock(); 833 834 return 0; 835} 836 837DEFINE_SHOW_ATTRIBUTE(identity_resolving_keys); 838 839static int long_term_keys_show(struct seq_file *f, void *ptr) 840{ 841 struct hci_dev *hdev = f->private; 842 struct smp_ltk *ltk; 843 844 rcu_read_lock(); 845 list_for_each_entry_rcu(ltk, &hdev->long_term_keys, list) 846 seq_printf(f, "%pMR (type %u) %u 0x%02x %u %.4x %.16llx %*phN\n", 847 <k->bdaddr, ltk->bdaddr_type, ltk->authenticated, 848 ltk->type, ltk->enc_size, __le16_to_cpu(ltk->ediv), 849 __le64_to_cpu(ltk->rand), 16, ltk->val); 850 rcu_read_unlock(); 851 852 return 0; 853} 854 855DEFINE_SHOW_ATTRIBUTE(long_term_keys); 856 857static int conn_min_interval_set(void *data, u64 val) 858{ 859 struct hci_dev *hdev = data; 860 861 hci_dev_lock(hdev); 862 if (val < 0x0006 || val > 0x0c80 || val > hdev->le_conn_max_interval) { 863 hci_dev_unlock(hdev); 864 return -EINVAL; 865 } 866 867 hdev->le_conn_min_interval = val; 868 hci_dev_unlock(hdev); 869 870 return 0; 871} 872 873static int conn_min_interval_get(void *data, u64 *val) 874{ 875 struct hci_dev *hdev = data; 876 877 hci_dev_lock(hdev); 878 *val = hdev->le_conn_min_interval; 879 hci_dev_unlock(hdev); 880 881 return 0; 882} 883 884DEFINE_DEBUGFS_ATTRIBUTE(conn_min_interval_fops, conn_min_interval_get, 885 conn_min_interval_set, "%llu\n"); 886 887static int conn_max_interval_set(void *data, u64 val) 888{ 889 struct hci_dev *hdev = data; 890 891 hci_dev_lock(hdev); 892 if (val < 0x0006 || val > 0x0c80 || val < hdev->le_conn_min_interval) { 893 hci_dev_unlock(hdev); 894 return -EINVAL; 895 } 896 897 hdev->le_conn_max_interval = val; 898 hci_dev_unlock(hdev); 899 900 return 0; 901} 902 903static int conn_max_interval_get(void *data, u64 *val) 904{ 905 struct hci_dev *hdev = data; 906 907 hci_dev_lock(hdev); 908 *val = hdev->le_conn_max_interval; 909 hci_dev_unlock(hdev); 910 911 return 0; 912} 913 914DEFINE_DEBUGFS_ATTRIBUTE(conn_max_interval_fops, conn_max_interval_get, 915 conn_max_interval_set, "%llu\n"); 916 917static int conn_latency_set(void *data, u64 val) 918{ 919 struct hci_dev *hdev = data; 920 921 if (val > 0x01f3) 922 return -EINVAL; 923 924 hci_dev_lock(hdev); 925 hdev->le_conn_latency = val; 926 hci_dev_unlock(hdev); 927 928 return 0; 929} 930 931static int conn_latency_get(void *data, u64 *val) 932{ 933 struct hci_dev *hdev = data; 934 935 hci_dev_lock(hdev); 936 *val = hdev->le_conn_latency; 937 hci_dev_unlock(hdev); 938 939 return 0; 940} 941 942DEFINE_DEBUGFS_ATTRIBUTE(conn_latency_fops, conn_latency_get, 943 conn_latency_set, "%llu\n"); 944 945static int supervision_timeout_set(void *data, u64 val) 946{ 947 struct hci_dev *hdev = data; 948 949 if (val < 0x000a || val > 0x0c80) 950 return -EINVAL; 951 952 hci_dev_lock(hdev); 953 hdev->le_supv_timeout = val; 954 hci_dev_unlock(hdev); 955 956 return 0; 957} 958 959static int supervision_timeout_get(void *data, u64 *val) 960{ 961 struct hci_dev *hdev = data; 962 963 hci_dev_lock(hdev); 964 *val = hdev->le_supv_timeout; 965 hci_dev_unlock(hdev); 966 967 return 0; 968} 969 970DEFINE_DEBUGFS_ATTRIBUTE(supervision_timeout_fops, supervision_timeout_get, 971 supervision_timeout_set, "%llu\n"); 972 973static int adv_channel_map_set(void *data, u64 val) 974{ 975 struct hci_dev *hdev = data; 976 977 if (val < 0x01 || val > 0x07) 978 return -EINVAL; 979 980 hci_dev_lock(hdev); 981 hdev->le_adv_channel_map = val; 982 hci_dev_unlock(hdev); 983 984 return 0; 985} 986 987static int adv_channel_map_get(void *data, u64 *val) 988{ 989 struct hci_dev *hdev = data; 990 991 hci_dev_lock(hdev); 992 *val = hdev->le_adv_channel_map; 993 hci_dev_unlock(hdev); 994 995 return 0; 996} 997 998DEFINE_DEBUGFS_ATTRIBUTE(adv_channel_map_fops, adv_channel_map_get, 999 adv_channel_map_set, "%llu\n"); 1000 1001static int adv_min_interval_set(void *data, u64 val) 1002{ 1003 struct hci_dev *hdev = data; 1004 1005 hci_dev_lock(hdev); 1006 if (val < 0x0020 || val > 0x4000 || val > hdev->le_adv_max_interval) { 1007 hci_dev_unlock(hdev); 1008 return -EINVAL; 1009 } 1010 1011 hdev->le_adv_min_interval = val; 1012 hci_dev_unlock(hdev); 1013 1014 return 0; 1015} 1016 1017static int adv_min_interval_get(void *data, u64 *val) 1018{ 1019 struct hci_dev *hdev = data; 1020 1021 hci_dev_lock(hdev); 1022 *val = hdev->le_adv_min_interval; 1023 hci_dev_unlock(hdev); 1024 1025 return 0; 1026} 1027 1028DEFINE_DEBUGFS_ATTRIBUTE(adv_min_interval_fops, adv_min_interval_get, 1029 adv_min_interval_set, "%llu\n"); 1030 1031static int adv_max_interval_set(void *data, u64 val) 1032{ 1033 struct hci_dev *hdev = data; 1034 1035 hci_dev_lock(hdev); 1036 if (val < 0x0020 || val > 0x4000 || val < hdev->le_adv_min_interval) { 1037 hci_dev_unlock(hdev); 1038 return -EINVAL; 1039 } 1040 1041 hdev->le_adv_max_interval = val; 1042 hci_dev_unlock(hdev); 1043 1044 return 0; 1045} 1046 1047static int adv_max_interval_get(void *data, u64 *val) 1048{ 1049 struct hci_dev *hdev = data; 1050 1051 hci_dev_lock(hdev); 1052 *val = hdev->le_adv_max_interval; 1053 hci_dev_unlock(hdev); 1054 1055 return 0; 1056} 1057 1058DEFINE_DEBUGFS_ATTRIBUTE(adv_max_interval_fops, adv_max_interval_get, 1059 adv_max_interval_set, "%llu\n"); 1060 1061static int min_key_size_set(void *data, u64 val) 1062{ 1063 struct hci_dev *hdev = data; 1064 1065 hci_dev_lock(hdev); 1066 if (val > hdev->le_max_key_size || val < SMP_MIN_ENC_KEY_SIZE) { 1067 hci_dev_unlock(hdev); 1068 return -EINVAL; 1069 } 1070 1071 hdev->le_min_key_size = val; 1072 hci_dev_unlock(hdev); 1073 1074 return 0; 1075} 1076 1077static int min_key_size_get(void *data, u64 *val) 1078{ 1079 struct hci_dev *hdev = data; 1080 1081 hci_dev_lock(hdev); 1082 *val = hdev->le_min_key_size; 1083 hci_dev_unlock(hdev); 1084 1085 return 0; 1086} 1087 1088DEFINE_DEBUGFS_ATTRIBUTE(min_key_size_fops, min_key_size_get, 1089 min_key_size_set, "%llu\n"); 1090 1091static int max_key_size_set(void *data, u64 val) 1092{ 1093 struct hci_dev *hdev = data; 1094 1095 hci_dev_lock(hdev); 1096 if (val > SMP_MAX_ENC_KEY_SIZE || val < hdev->le_min_key_size) { 1097 hci_dev_unlock(hdev); 1098 return -EINVAL; 1099 } 1100 1101 hdev->le_max_key_size = val; 1102 hci_dev_unlock(hdev); 1103 1104 return 0; 1105} 1106 1107static int max_key_size_get(void *data, u64 *val) 1108{ 1109 struct hci_dev *hdev = data; 1110 1111 hci_dev_lock(hdev); 1112 *val = hdev->le_max_key_size; 1113 hci_dev_unlock(hdev); 1114 1115 return 0; 1116} 1117 1118DEFINE_DEBUGFS_ATTRIBUTE(max_key_size_fops, max_key_size_get, 1119 max_key_size_set, "%llu\n"); 1120 1121static int auth_payload_timeout_set(void *data, u64 val) 1122{ 1123 struct hci_dev *hdev = data; 1124 1125 if (val < 0x0001 || val > 0xffff) 1126 return -EINVAL; 1127 1128 hci_dev_lock(hdev); 1129 hdev->auth_payload_timeout = val; 1130 hci_dev_unlock(hdev); 1131 1132 return 0; 1133} 1134 1135static int auth_payload_timeout_get(void *data, u64 *val) 1136{ 1137 struct hci_dev *hdev = data; 1138 1139 hci_dev_lock(hdev); 1140 *val = hdev->auth_payload_timeout; 1141 hci_dev_unlock(hdev); 1142 1143 return 0; 1144} 1145 1146DEFINE_DEBUGFS_ATTRIBUTE(auth_payload_timeout_fops, 1147 auth_payload_timeout_get, 1148 auth_payload_timeout_set, "%llu\n"); 1149 1150static ssize_t force_no_mitm_read(struct file *file, 1151 char __user *user_buf, 1152 size_t count, loff_t *ppos) 1153{ 1154 struct hci_dev *hdev = file->private_data; 1155 char buf[3]; 1156 1157 buf[0] = hci_dev_test_flag(hdev, HCI_FORCE_NO_MITM) ? 'Y' : 'N'; 1158 buf[1] = '\n'; 1159 buf[2] = '\0'; 1160 return simple_read_from_buffer(user_buf, count, ppos, buf, 2); 1161} 1162 1163static ssize_t force_no_mitm_write(struct file *file, 1164 const char __user *user_buf, 1165 size_t count, loff_t *ppos) 1166{ 1167 struct hci_dev *hdev = file->private_data; 1168 char buf[32]; 1169 size_t buf_size = min(count, (sizeof(buf) - 1)); 1170 bool enable; 1171 1172 if (copy_from_user(buf, user_buf, buf_size)) 1173 return -EFAULT; 1174 1175 buf[buf_size] = '\0'; 1176 if (kstrtobool(buf, &enable)) 1177 return -EINVAL; 1178 1179 if (enable == hci_dev_test_flag(hdev, HCI_FORCE_NO_MITM)) 1180 return -EALREADY; 1181 1182 hci_dev_change_flag(hdev, HCI_FORCE_NO_MITM); 1183 1184 return count; 1185} 1186 1187static const struct file_operations force_no_mitm_fops = { 1188 .open = simple_open, 1189 .read = force_no_mitm_read, 1190 .write = force_no_mitm_write, 1191 .llseek = default_llseek, 1192}; 1193 1194DEFINE_QUIRK_ATTRIBUTE(quirk_strict_duplicate_filter, 1195 HCI_QUIRK_STRICT_DUPLICATE_FILTER); 1196DEFINE_QUIRK_ATTRIBUTE(quirk_simultaneous_discovery, 1197 HCI_QUIRK_SIMULTANEOUS_DISCOVERY); 1198 1199void hci_debugfs_create_le(struct hci_dev *hdev) 1200{ 1201 debugfs_create_file("identity", 0400, hdev->debugfs, hdev, 1202 &identity_fops); 1203 debugfs_create_file("rpa_timeout", 0644, hdev->debugfs, hdev, 1204 &rpa_timeout_fops); 1205 debugfs_create_file("random_address", 0444, hdev->debugfs, hdev, 1206 &random_address_fops); 1207 debugfs_create_file("static_address", 0444, hdev->debugfs, hdev, 1208 &static_address_fops); 1209 1210 /* For controllers with a public address, provide a debug 1211 * option to force the usage of the configured static 1212 * address. By default the public address is used. 1213 */ 1214 if (bacmp(&hdev->bdaddr, BDADDR_ANY)) 1215 debugfs_create_file("force_static_address", 0644, 1216 hdev->debugfs, hdev, 1217 &force_static_address_fops); 1218 1219 debugfs_create_u8("white_list_size", 0444, hdev->debugfs, 1220 &hdev->le_accept_list_size); 1221 debugfs_create_file("white_list", 0444, hdev->debugfs, hdev, 1222 &white_list_fops); 1223 debugfs_create_u8("resolv_list_size", 0444, hdev->debugfs, 1224 &hdev->le_resolv_list_size); 1225 debugfs_create_file("resolv_list", 0444, hdev->debugfs, hdev, 1226 &resolv_list_fops); 1227 debugfs_create_file("identity_resolving_keys", 0400, hdev->debugfs, 1228 hdev, &identity_resolving_keys_fops); 1229 debugfs_create_file("long_term_keys", 0400, hdev->debugfs, hdev, 1230 &long_term_keys_fops); 1231 debugfs_create_file("conn_min_interval", 0644, hdev->debugfs, hdev, 1232 &conn_min_interval_fops); 1233 debugfs_create_file("conn_max_interval", 0644, hdev->debugfs, hdev, 1234 &conn_max_interval_fops); 1235 debugfs_create_file("conn_latency", 0644, hdev->debugfs, hdev, 1236 &conn_latency_fops); 1237 debugfs_create_file("supervision_timeout", 0644, hdev->debugfs, hdev, 1238 &supervision_timeout_fops); 1239 debugfs_create_file("adv_channel_map", 0644, hdev->debugfs, hdev, 1240 &adv_channel_map_fops); 1241 debugfs_create_file("adv_min_interval", 0644, hdev->debugfs, hdev, 1242 &adv_min_interval_fops); 1243 debugfs_create_file("adv_max_interval", 0644, hdev->debugfs, hdev, 1244 &adv_max_interval_fops); 1245 debugfs_create_u16("discov_interleaved_timeout", 0644, hdev->debugfs, 1246 &hdev->discov_interleaved_timeout); 1247 debugfs_create_file("min_key_size", 0644, hdev->debugfs, hdev, 1248 &min_key_size_fops); 1249 debugfs_create_file("max_key_size", 0644, hdev->debugfs, hdev, 1250 &max_key_size_fops); 1251 debugfs_create_file("auth_payload_timeout", 0644, hdev->debugfs, hdev, 1252 &auth_payload_timeout_fops); 1253 debugfs_create_file("force_no_mitm", 0644, hdev->debugfs, hdev, 1254 &force_no_mitm_fops); 1255 1256 debugfs_create_file("quirk_strict_duplicate_filter", 0644, 1257 hdev->debugfs, hdev, 1258 &quirk_strict_duplicate_filter_fops); 1259 debugfs_create_file("quirk_simultaneous_discovery", 0644, 1260 hdev->debugfs, hdev, 1261 &quirk_simultaneous_discovery_fops); 1262} 1263 1264void hci_debugfs_create_conn(struct hci_conn *conn) 1265{ 1266 struct hci_dev *hdev = conn->hdev; 1267 char name[6]; 1268 1269 if (IS_ERR_OR_NULL(hdev->debugfs) || conn->debugfs) 1270 return; 1271 1272 snprintf(name, sizeof(name), "%u", conn->handle); 1273 conn->debugfs = debugfs_create_dir(name, hdev->debugfs); 1274} 1275 1276static ssize_t dut_mode_read(struct file *file, char __user *user_buf, 1277 size_t count, loff_t *ppos) 1278{ 1279 struct hci_dev *hdev = file->private_data; 1280 char buf[3]; 1281 1282 buf[0] = hci_dev_test_flag(hdev, HCI_DUT_MODE) ? 'Y' : 'N'; 1283 buf[1] = '\n'; 1284 buf[2] = '\0'; 1285 return simple_read_from_buffer(user_buf, count, ppos, buf, 2); 1286} 1287 1288static ssize_t dut_mode_write(struct file *file, const char __user *user_buf, 1289 size_t count, loff_t *ppos) 1290{ 1291 struct hci_dev *hdev = file->private_data; 1292 struct sk_buff *skb; 1293 bool enable; 1294 int err; 1295 1296 if (!test_bit(HCI_UP, &hdev->flags)) 1297 return -ENETDOWN; 1298 1299 err = kstrtobool_from_user(user_buf, count, &enable); 1300 if (err) 1301 return err; 1302 1303 if (enable == hci_dev_test_flag(hdev, HCI_DUT_MODE)) 1304 return -EALREADY; 1305 1306 hci_req_sync_lock(hdev); 1307 if (enable) 1308 skb = __hci_cmd_sync(hdev, HCI_OP_ENABLE_DUT_MODE, 0, NULL, 1309 HCI_CMD_TIMEOUT); 1310 else 1311 skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, 1312 HCI_CMD_TIMEOUT); 1313 hci_req_sync_unlock(hdev); 1314 1315 if (IS_ERR(skb)) 1316 return PTR_ERR(skb); 1317 1318 kfree_skb(skb); 1319 1320 hci_dev_change_flag(hdev, HCI_DUT_MODE); 1321 1322 return count; 1323} 1324 1325static const struct file_operations dut_mode_fops = { 1326 .open = simple_open, 1327 .read = dut_mode_read, 1328 .write = dut_mode_write, 1329 .llseek = default_llseek, 1330}; 1331 1332static ssize_t vendor_diag_read(struct file *file, char __user *user_buf, 1333 size_t count, loff_t *ppos) 1334{ 1335 struct hci_dev *hdev = file->private_data; 1336 char buf[3]; 1337 1338 buf[0] = hci_dev_test_flag(hdev, HCI_VENDOR_DIAG) ? 'Y' : 'N'; 1339 buf[1] = '\n'; 1340 buf[2] = '\0'; 1341 return simple_read_from_buffer(user_buf, count, ppos, buf, 2); 1342} 1343 1344static ssize_t vendor_diag_write(struct file *file, const char __user *user_buf, 1345 size_t count, loff_t *ppos) 1346{ 1347 struct hci_dev *hdev = file->private_data; 1348 bool enable; 1349 int err; 1350 1351 err = kstrtobool_from_user(user_buf, count, &enable); 1352 if (err) 1353 return err; 1354 1355 /* When the diagnostic flags are not persistent and the transport 1356 * is not active or in user channel operation, then there is no need 1357 * for the vendor callback. Instead just store the desired value and 1358 * the setting will be programmed when the controller gets powered on. 1359 */ 1360 if (test_bit(HCI_QUIRK_NON_PERSISTENT_DIAG, &hdev->quirks) && 1361 (!test_bit(HCI_RUNNING, &hdev->flags) || 1362 hci_dev_test_flag(hdev, HCI_USER_CHANNEL))) 1363 goto done; 1364 1365 hci_req_sync_lock(hdev); 1366 err = hdev->set_diag(hdev, enable); 1367 hci_req_sync_unlock(hdev); 1368 1369 if (err < 0) 1370 return err; 1371 1372done: 1373 if (enable) 1374 hci_dev_set_flag(hdev, HCI_VENDOR_DIAG); 1375 else 1376 hci_dev_clear_flag(hdev, HCI_VENDOR_DIAG); 1377 1378 return count; 1379} 1380 1381static const struct file_operations vendor_diag_fops = { 1382 .open = simple_open, 1383 .read = vendor_diag_read, 1384 .write = vendor_diag_write, 1385 .llseek = default_llseek, 1386}; 1387 1388void hci_debugfs_create_basic(struct hci_dev *hdev) 1389{ 1390 debugfs_create_file("dut_mode", 0644, hdev->debugfs, hdev, 1391 &dut_mode_fops); 1392 1393 if (hdev->set_diag) 1394 debugfs_create_file("vendor_diag", 0644, hdev->debugfs, hdev, 1395 &vendor_diag_fops); 1396} 1397