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