1 /* 2 BlueZ - Bluetooth protocol stack for Linux 3 Copyright (c) 2000-2001, 2010, Code Aurora Forum. All rights reserved. 4 Copyright 2023 NXP 5 6 Written 2000,2001 by Maxim Krasnyansky <maxk@qualcomm.com> 7 8 This program is free software; you can redistribute it and/or modify 9 it under the terms of the GNU General Public License version 2 as 10 published by the Free Software Foundation; 11 12 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS 13 OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 14 FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF THIRD PARTY RIGHTS. 15 IN NO EVENT SHALL THE COPYRIGHT HOLDER(S) AND AUTHOR(S) BE LIABLE FOR ANY 16 CLAIM, OR ANY SPECIAL INDIRECT OR CONSEQUENTIAL DAMAGES, OR ANY DAMAGES 17 WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 18 ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF 19 OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 20 21 ALL LIABILITY, INCLUDING LIABILITY FOR INFRINGEMENT OF ANY PATENTS, 22 COPYRIGHTS, TRADEMARKS OR OTHER RIGHTS, RELATING TO USE OF THIS 23 SOFTWARE IS DISCLAIMED. 24 */ 25 26 /* Bluetooth HCI event handling. */ 27 28 #include <asm/unaligned.h> 29 #include <linux/crypto.h> 30 #include <crypto/algapi.h> 31 32 #include <net/bluetooth/bluetooth.h> 33 #include <net/bluetooth/hci_core.h> 34 #include <net/bluetooth/mgmt.h> 35 36 #include "hci_request.h" 37 #include "hci_debugfs.h" 38 #include "hci_codec.h" 39 #include "smp.h" 40 #include "msft.h" 41 #include "eir.h" 42 43 #define ZERO_KEY "\x00\x00\x00\x00\x00\x00\x00\x00" \ 44 "\x00\x00\x00\x00\x00\x00\x00\x00" 45 46 #define secs_to_jiffies(_secs) msecs_to_jiffies((_secs) * 1000) 47 48 /* Handle HCI Event packets */ 49 50 static void *hci_ev_skb_pull(struct hci_dev *hdev, struct sk_buff *skb, 51 u8 ev, size_t len) 52 { 53 void *data; 54 55 data = skb_pull_data(skb, len); 56 if (!data) 57 bt_dev_err(hdev, "Malformed Event: 0x%2.2x", ev); 58 59 return data; 60 } 61 62 static void *hci_cc_skb_pull(struct hci_dev *hdev, struct sk_buff *skb, 63 u16 op, size_t len) 64 { 65 void *data; 66 67 data = skb_pull_data(skb, len); 68 if (!data) 69 bt_dev_err(hdev, "Malformed Command Complete: 0x%4.4x", op); 70 71 return data; 72 } 73 74 static void *hci_le_ev_skb_pull(struct hci_dev *hdev, struct sk_buff *skb, 75 u8 ev, size_t len) 76 { 77 void *data; 78 79 data = skb_pull_data(skb, len); 80 if (!data) 81 bt_dev_err(hdev, "Malformed LE Event: 0x%2.2x", ev); 82 83 return data; 84 } 85 86 static u8 hci_cc_inquiry_cancel(struct hci_dev *hdev, void *data, 87 struct sk_buff *skb) 88 { 89 struct hci_ev_status *rp = data; 90 91 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 92 93 /* It is possible that we receive Inquiry Complete event right 94 * before we receive Inquiry Cancel Command Complete event, in 95 * which case the latter event should have status of Command 96 * Disallowed (0x0c). This should not be treated as error, since 97 * we actually achieve what Inquiry Cancel wants to achieve, 98 * which is to end the last Inquiry session. 99 */ 100 if (rp->status == 0x0c && !test_bit(HCI_INQUIRY, &hdev->flags)) { 101 bt_dev_warn(hdev, "Ignoring error of Inquiry Cancel command"); 102 rp->status = 0x00; 103 } 104 105 if (rp->status) 106 return rp->status; 107 108 clear_bit(HCI_INQUIRY, &hdev->flags); 109 smp_mb__after_atomic(); /* wake_up_bit advises about this barrier */ 110 wake_up_bit(&hdev->flags, HCI_INQUIRY); 111 112 hci_dev_lock(hdev); 113 /* Set discovery state to stopped if we're not doing LE active 114 * scanning. 115 */ 116 if (!hci_dev_test_flag(hdev, HCI_LE_SCAN) || 117 hdev->le_scan_type != LE_SCAN_ACTIVE) 118 hci_discovery_set_state(hdev, DISCOVERY_STOPPED); 119 hci_dev_unlock(hdev); 120 121 hci_conn_check_pending(hdev); 122 123 return rp->status; 124 } 125 126 static u8 hci_cc_periodic_inq(struct hci_dev *hdev, void *data, 127 struct sk_buff *skb) 128 { 129 struct hci_ev_status *rp = data; 130 131 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 132 133 if (rp->status) 134 return rp->status; 135 136 hci_dev_set_flag(hdev, HCI_PERIODIC_INQ); 137 138 return rp->status; 139 } 140 141 static u8 hci_cc_exit_periodic_inq(struct hci_dev *hdev, void *data, 142 struct sk_buff *skb) 143 { 144 struct hci_ev_status *rp = data; 145 146 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 147 148 if (rp->status) 149 return rp->status; 150 151 hci_dev_clear_flag(hdev, HCI_PERIODIC_INQ); 152 153 hci_conn_check_pending(hdev); 154 155 return rp->status; 156 } 157 158 static u8 hci_cc_remote_name_req_cancel(struct hci_dev *hdev, void *data, 159 struct sk_buff *skb) 160 { 161 struct hci_ev_status *rp = data; 162 163 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 164 165 return rp->status; 166 } 167 168 static u8 hci_cc_role_discovery(struct hci_dev *hdev, void *data, 169 struct sk_buff *skb) 170 { 171 struct hci_rp_role_discovery *rp = data; 172 struct hci_conn *conn; 173 174 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 175 176 if (rp->status) 177 return rp->status; 178 179 hci_dev_lock(hdev); 180 181 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(rp->handle)); 182 if (conn) 183 conn->role = rp->role; 184 185 hci_dev_unlock(hdev); 186 187 return rp->status; 188 } 189 190 static u8 hci_cc_read_link_policy(struct hci_dev *hdev, void *data, 191 struct sk_buff *skb) 192 { 193 struct hci_rp_read_link_policy *rp = data; 194 struct hci_conn *conn; 195 196 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 197 198 if (rp->status) 199 return rp->status; 200 201 hci_dev_lock(hdev); 202 203 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(rp->handle)); 204 if (conn) 205 conn->link_policy = __le16_to_cpu(rp->policy); 206 207 hci_dev_unlock(hdev); 208 209 return rp->status; 210 } 211 212 static u8 hci_cc_write_link_policy(struct hci_dev *hdev, void *data, 213 struct sk_buff *skb) 214 { 215 struct hci_rp_write_link_policy *rp = data; 216 struct hci_conn *conn; 217 void *sent; 218 219 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 220 221 if (rp->status) 222 return rp->status; 223 224 sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_LINK_POLICY); 225 if (!sent) 226 return rp->status; 227 228 hci_dev_lock(hdev); 229 230 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(rp->handle)); 231 if (conn) 232 conn->link_policy = get_unaligned_le16(sent + 2); 233 234 hci_dev_unlock(hdev); 235 236 return rp->status; 237 } 238 239 static u8 hci_cc_read_def_link_policy(struct hci_dev *hdev, void *data, 240 struct sk_buff *skb) 241 { 242 struct hci_rp_read_def_link_policy *rp = data; 243 244 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 245 246 if (rp->status) 247 return rp->status; 248 249 hdev->link_policy = __le16_to_cpu(rp->policy); 250 251 return rp->status; 252 } 253 254 static u8 hci_cc_write_def_link_policy(struct hci_dev *hdev, void *data, 255 struct sk_buff *skb) 256 { 257 struct hci_ev_status *rp = data; 258 void *sent; 259 260 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 261 262 if (rp->status) 263 return rp->status; 264 265 sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_DEF_LINK_POLICY); 266 if (!sent) 267 return rp->status; 268 269 hdev->link_policy = get_unaligned_le16(sent); 270 271 return rp->status; 272 } 273 274 static u8 hci_cc_reset(struct hci_dev *hdev, void *data, struct sk_buff *skb) 275 { 276 struct hci_ev_status *rp = data; 277 278 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 279 280 clear_bit(HCI_RESET, &hdev->flags); 281 282 if (rp->status) 283 return rp->status; 284 285 /* Reset all non-persistent flags */ 286 hci_dev_clear_volatile_flags(hdev); 287 288 hci_discovery_set_state(hdev, DISCOVERY_STOPPED); 289 290 hdev->inq_tx_power = HCI_TX_POWER_INVALID; 291 hdev->adv_tx_power = HCI_TX_POWER_INVALID; 292 293 memset(hdev->adv_data, 0, sizeof(hdev->adv_data)); 294 hdev->adv_data_len = 0; 295 296 memset(hdev->scan_rsp_data, 0, sizeof(hdev->scan_rsp_data)); 297 hdev->scan_rsp_data_len = 0; 298 299 hdev->le_scan_type = LE_SCAN_PASSIVE; 300 301 hdev->ssp_debug_mode = 0; 302 303 hci_bdaddr_list_clear(&hdev->le_accept_list); 304 hci_bdaddr_list_clear(&hdev->le_resolv_list); 305 306 return rp->status; 307 } 308 309 static u8 hci_cc_read_stored_link_key(struct hci_dev *hdev, void *data, 310 struct sk_buff *skb) 311 { 312 struct hci_rp_read_stored_link_key *rp = data; 313 struct hci_cp_read_stored_link_key *sent; 314 315 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 316 317 sent = hci_sent_cmd_data(hdev, HCI_OP_READ_STORED_LINK_KEY); 318 if (!sent) 319 return rp->status; 320 321 if (!rp->status && sent->read_all == 0x01) { 322 hdev->stored_max_keys = le16_to_cpu(rp->max_keys); 323 hdev->stored_num_keys = le16_to_cpu(rp->num_keys); 324 } 325 326 return rp->status; 327 } 328 329 static u8 hci_cc_delete_stored_link_key(struct hci_dev *hdev, void *data, 330 struct sk_buff *skb) 331 { 332 struct hci_rp_delete_stored_link_key *rp = data; 333 u16 num_keys; 334 335 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 336 337 if (rp->status) 338 return rp->status; 339 340 num_keys = le16_to_cpu(rp->num_keys); 341 342 if (num_keys <= hdev->stored_num_keys) 343 hdev->stored_num_keys -= num_keys; 344 else 345 hdev->stored_num_keys = 0; 346 347 return rp->status; 348 } 349 350 static u8 hci_cc_write_local_name(struct hci_dev *hdev, void *data, 351 struct sk_buff *skb) 352 { 353 struct hci_ev_status *rp = data; 354 void *sent; 355 356 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 357 358 sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_LOCAL_NAME); 359 if (!sent) 360 return rp->status; 361 362 hci_dev_lock(hdev); 363 364 if (hci_dev_test_flag(hdev, HCI_MGMT)) 365 mgmt_set_local_name_complete(hdev, sent, rp->status); 366 else if (!rp->status) 367 memcpy(hdev->dev_name, sent, HCI_MAX_NAME_LENGTH); 368 369 hci_dev_unlock(hdev); 370 371 return rp->status; 372 } 373 374 static u8 hci_cc_read_local_name(struct hci_dev *hdev, void *data, 375 struct sk_buff *skb) 376 { 377 struct hci_rp_read_local_name *rp = data; 378 379 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 380 381 if (rp->status) 382 return rp->status; 383 384 if (hci_dev_test_flag(hdev, HCI_SETUP) || 385 hci_dev_test_flag(hdev, HCI_CONFIG)) 386 memcpy(hdev->dev_name, rp->name, HCI_MAX_NAME_LENGTH); 387 388 return rp->status; 389 } 390 391 static u8 hci_cc_write_auth_enable(struct hci_dev *hdev, void *data, 392 struct sk_buff *skb) 393 { 394 struct hci_ev_status *rp = data; 395 void *sent; 396 397 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 398 399 sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_AUTH_ENABLE); 400 if (!sent) 401 return rp->status; 402 403 hci_dev_lock(hdev); 404 405 if (!rp->status) { 406 __u8 param = *((__u8 *) sent); 407 408 if (param == AUTH_ENABLED) 409 set_bit(HCI_AUTH, &hdev->flags); 410 else 411 clear_bit(HCI_AUTH, &hdev->flags); 412 } 413 414 if (hci_dev_test_flag(hdev, HCI_MGMT)) 415 mgmt_auth_enable_complete(hdev, rp->status); 416 417 hci_dev_unlock(hdev); 418 419 return rp->status; 420 } 421 422 static u8 hci_cc_write_encrypt_mode(struct hci_dev *hdev, void *data, 423 struct sk_buff *skb) 424 { 425 struct hci_ev_status *rp = data; 426 __u8 param; 427 void *sent; 428 429 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 430 431 if (rp->status) 432 return rp->status; 433 434 sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_ENCRYPT_MODE); 435 if (!sent) 436 return rp->status; 437 438 param = *((__u8 *) sent); 439 440 if (param) 441 set_bit(HCI_ENCRYPT, &hdev->flags); 442 else 443 clear_bit(HCI_ENCRYPT, &hdev->flags); 444 445 return rp->status; 446 } 447 448 static u8 hci_cc_write_scan_enable(struct hci_dev *hdev, void *data, 449 struct sk_buff *skb) 450 { 451 struct hci_ev_status *rp = data; 452 __u8 param; 453 void *sent; 454 455 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 456 457 sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_SCAN_ENABLE); 458 if (!sent) 459 return rp->status; 460 461 param = *((__u8 *) sent); 462 463 hci_dev_lock(hdev); 464 465 if (rp->status) { 466 hdev->discov_timeout = 0; 467 goto done; 468 } 469 470 if (param & SCAN_INQUIRY) 471 set_bit(HCI_ISCAN, &hdev->flags); 472 else 473 clear_bit(HCI_ISCAN, &hdev->flags); 474 475 if (param & SCAN_PAGE) 476 set_bit(HCI_PSCAN, &hdev->flags); 477 else 478 clear_bit(HCI_PSCAN, &hdev->flags); 479 480 done: 481 hci_dev_unlock(hdev); 482 483 return rp->status; 484 } 485 486 static u8 hci_cc_set_event_filter(struct hci_dev *hdev, void *data, 487 struct sk_buff *skb) 488 { 489 struct hci_ev_status *rp = data; 490 struct hci_cp_set_event_filter *cp; 491 void *sent; 492 493 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 494 495 if (rp->status) 496 return rp->status; 497 498 sent = hci_sent_cmd_data(hdev, HCI_OP_SET_EVENT_FLT); 499 if (!sent) 500 return rp->status; 501 502 cp = (struct hci_cp_set_event_filter *)sent; 503 504 if (cp->flt_type == HCI_FLT_CLEAR_ALL) 505 hci_dev_clear_flag(hdev, HCI_EVENT_FILTER_CONFIGURED); 506 else 507 hci_dev_set_flag(hdev, HCI_EVENT_FILTER_CONFIGURED); 508 509 return rp->status; 510 } 511 512 static u8 hci_cc_read_class_of_dev(struct hci_dev *hdev, void *data, 513 struct sk_buff *skb) 514 { 515 struct hci_rp_read_class_of_dev *rp = data; 516 517 if (WARN_ON(!hdev)) 518 return HCI_ERROR_UNSPECIFIED; 519 520 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 521 522 if (rp->status) 523 return rp->status; 524 525 memcpy(hdev->dev_class, rp->dev_class, 3); 526 527 bt_dev_dbg(hdev, "class 0x%.2x%.2x%.2x", hdev->dev_class[2], 528 hdev->dev_class[1], hdev->dev_class[0]); 529 530 return rp->status; 531 } 532 533 static u8 hci_cc_write_class_of_dev(struct hci_dev *hdev, void *data, 534 struct sk_buff *skb) 535 { 536 struct hci_ev_status *rp = data; 537 void *sent; 538 539 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 540 541 sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_CLASS_OF_DEV); 542 if (!sent) 543 return rp->status; 544 545 hci_dev_lock(hdev); 546 547 if (!rp->status) 548 memcpy(hdev->dev_class, sent, 3); 549 550 if (hci_dev_test_flag(hdev, HCI_MGMT)) 551 mgmt_set_class_of_dev_complete(hdev, sent, rp->status); 552 553 hci_dev_unlock(hdev); 554 555 return rp->status; 556 } 557 558 static u8 hci_cc_read_voice_setting(struct hci_dev *hdev, void *data, 559 struct sk_buff *skb) 560 { 561 struct hci_rp_read_voice_setting *rp = data; 562 __u16 setting; 563 564 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 565 566 if (rp->status) 567 return rp->status; 568 569 setting = __le16_to_cpu(rp->voice_setting); 570 571 if (hdev->voice_setting == setting) 572 return rp->status; 573 574 hdev->voice_setting = setting; 575 576 bt_dev_dbg(hdev, "voice setting 0x%4.4x", setting); 577 578 if (hdev->notify) 579 hdev->notify(hdev, HCI_NOTIFY_VOICE_SETTING); 580 581 return rp->status; 582 } 583 584 static u8 hci_cc_write_voice_setting(struct hci_dev *hdev, void *data, 585 struct sk_buff *skb) 586 { 587 struct hci_ev_status *rp = data; 588 __u16 setting; 589 void *sent; 590 591 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 592 593 if (rp->status) 594 return rp->status; 595 596 sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_VOICE_SETTING); 597 if (!sent) 598 return rp->status; 599 600 setting = get_unaligned_le16(sent); 601 602 if (hdev->voice_setting == setting) 603 return rp->status; 604 605 hdev->voice_setting = setting; 606 607 bt_dev_dbg(hdev, "voice setting 0x%4.4x", setting); 608 609 if (hdev->notify) 610 hdev->notify(hdev, HCI_NOTIFY_VOICE_SETTING); 611 612 return rp->status; 613 } 614 615 static u8 hci_cc_read_num_supported_iac(struct hci_dev *hdev, void *data, 616 struct sk_buff *skb) 617 { 618 struct hci_rp_read_num_supported_iac *rp = data; 619 620 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 621 622 if (rp->status) 623 return rp->status; 624 625 hdev->num_iac = rp->num_iac; 626 627 bt_dev_dbg(hdev, "num iac %d", hdev->num_iac); 628 629 return rp->status; 630 } 631 632 static u8 hci_cc_write_ssp_mode(struct hci_dev *hdev, void *data, 633 struct sk_buff *skb) 634 { 635 struct hci_ev_status *rp = data; 636 struct hci_cp_write_ssp_mode *sent; 637 638 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 639 640 sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_SSP_MODE); 641 if (!sent) 642 return rp->status; 643 644 hci_dev_lock(hdev); 645 646 if (!rp->status) { 647 if (sent->mode) 648 hdev->features[1][0] |= LMP_HOST_SSP; 649 else 650 hdev->features[1][0] &= ~LMP_HOST_SSP; 651 } 652 653 if (!rp->status) { 654 if (sent->mode) 655 hci_dev_set_flag(hdev, HCI_SSP_ENABLED); 656 else 657 hci_dev_clear_flag(hdev, HCI_SSP_ENABLED); 658 } 659 660 hci_dev_unlock(hdev); 661 662 return rp->status; 663 } 664 665 static u8 hci_cc_write_sc_support(struct hci_dev *hdev, void *data, 666 struct sk_buff *skb) 667 { 668 struct hci_ev_status *rp = data; 669 struct hci_cp_write_sc_support *sent; 670 671 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 672 673 sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_SC_SUPPORT); 674 if (!sent) 675 return rp->status; 676 677 hci_dev_lock(hdev); 678 679 if (!rp->status) { 680 if (sent->support) 681 hdev->features[1][0] |= LMP_HOST_SC; 682 else 683 hdev->features[1][0] &= ~LMP_HOST_SC; 684 } 685 686 if (!hci_dev_test_flag(hdev, HCI_MGMT) && !rp->status) { 687 if (sent->support) 688 hci_dev_set_flag(hdev, HCI_SC_ENABLED); 689 else 690 hci_dev_clear_flag(hdev, HCI_SC_ENABLED); 691 } 692 693 hci_dev_unlock(hdev); 694 695 return rp->status; 696 } 697 698 static u8 hci_cc_read_local_version(struct hci_dev *hdev, void *data, 699 struct sk_buff *skb) 700 { 701 struct hci_rp_read_local_version *rp = data; 702 703 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 704 705 if (rp->status) 706 return rp->status; 707 708 if (hci_dev_test_flag(hdev, HCI_SETUP) || 709 hci_dev_test_flag(hdev, HCI_CONFIG)) { 710 hdev->hci_ver = rp->hci_ver; 711 hdev->hci_rev = __le16_to_cpu(rp->hci_rev); 712 hdev->lmp_ver = rp->lmp_ver; 713 hdev->manufacturer = __le16_to_cpu(rp->manufacturer); 714 hdev->lmp_subver = __le16_to_cpu(rp->lmp_subver); 715 } 716 717 return rp->status; 718 } 719 720 static u8 hci_cc_read_enc_key_size(struct hci_dev *hdev, void *data, 721 struct sk_buff *skb) 722 { 723 struct hci_rp_read_enc_key_size *rp = data; 724 struct hci_conn *conn; 725 u16 handle; 726 u8 status = rp->status; 727 728 bt_dev_dbg(hdev, "status 0x%2.2x", status); 729 730 handle = le16_to_cpu(rp->handle); 731 732 hci_dev_lock(hdev); 733 734 conn = hci_conn_hash_lookup_handle(hdev, handle); 735 if (!conn) { 736 status = 0xFF; 737 goto done; 738 } 739 740 /* While unexpected, the read_enc_key_size command may fail. The most 741 * secure approach is to then assume the key size is 0 to force a 742 * disconnection. 743 */ 744 if (status) { 745 bt_dev_err(hdev, "failed to read key size for handle %u", 746 handle); 747 conn->enc_key_size = 0; 748 } else { 749 conn->enc_key_size = rp->key_size; 750 status = 0; 751 752 if (conn->enc_key_size < hdev->min_enc_key_size) { 753 /* As slave role, the conn->state has been set to 754 * BT_CONNECTED and l2cap conn req might not be received 755 * yet, at this moment the l2cap layer almost does 756 * nothing with the non-zero status. 757 * So we also clear encrypt related bits, and then the 758 * handler of l2cap conn req will get the right secure 759 * state at a later time. 760 */ 761 status = HCI_ERROR_AUTH_FAILURE; 762 clear_bit(HCI_CONN_ENCRYPT, &conn->flags); 763 clear_bit(HCI_CONN_AES_CCM, &conn->flags); 764 } 765 } 766 767 hci_encrypt_cfm(conn, status); 768 769 done: 770 hci_dev_unlock(hdev); 771 772 return status; 773 } 774 775 static u8 hci_cc_read_local_commands(struct hci_dev *hdev, void *data, 776 struct sk_buff *skb) 777 { 778 struct hci_rp_read_local_commands *rp = data; 779 780 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 781 782 if (rp->status) 783 return rp->status; 784 785 if (hci_dev_test_flag(hdev, HCI_SETUP) || 786 hci_dev_test_flag(hdev, HCI_CONFIG)) 787 memcpy(hdev->commands, rp->commands, sizeof(hdev->commands)); 788 789 return rp->status; 790 } 791 792 static u8 hci_cc_read_auth_payload_timeout(struct hci_dev *hdev, void *data, 793 struct sk_buff *skb) 794 { 795 struct hci_rp_read_auth_payload_to *rp = data; 796 struct hci_conn *conn; 797 798 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 799 800 if (rp->status) 801 return rp->status; 802 803 hci_dev_lock(hdev); 804 805 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(rp->handle)); 806 if (conn) 807 conn->auth_payload_timeout = __le16_to_cpu(rp->timeout); 808 809 hci_dev_unlock(hdev); 810 811 return rp->status; 812 } 813 814 static u8 hci_cc_write_auth_payload_timeout(struct hci_dev *hdev, void *data, 815 struct sk_buff *skb) 816 { 817 struct hci_rp_write_auth_payload_to *rp = data; 818 struct hci_conn *conn; 819 void *sent; 820 821 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 822 823 sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_AUTH_PAYLOAD_TO); 824 if (!sent) 825 return rp->status; 826 827 hci_dev_lock(hdev); 828 829 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(rp->handle)); 830 if (!conn) { 831 rp->status = 0xff; 832 goto unlock; 833 } 834 835 if (!rp->status) 836 conn->auth_payload_timeout = get_unaligned_le16(sent + 2); 837 838 unlock: 839 hci_dev_unlock(hdev); 840 841 return rp->status; 842 } 843 844 static u8 hci_cc_read_local_features(struct hci_dev *hdev, void *data, 845 struct sk_buff *skb) 846 { 847 struct hci_rp_read_local_features *rp = data; 848 849 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 850 851 if (rp->status) 852 return rp->status; 853 854 memcpy(hdev->features, rp->features, 8); 855 856 /* Adjust default settings according to features 857 * supported by device. */ 858 859 if (hdev->features[0][0] & LMP_3SLOT) 860 hdev->pkt_type |= (HCI_DM3 | HCI_DH3); 861 862 if (hdev->features[0][0] & LMP_5SLOT) 863 hdev->pkt_type |= (HCI_DM5 | HCI_DH5); 864 865 if (hdev->features[0][1] & LMP_HV2) { 866 hdev->pkt_type |= (HCI_HV2); 867 hdev->esco_type |= (ESCO_HV2); 868 } 869 870 if (hdev->features[0][1] & LMP_HV3) { 871 hdev->pkt_type |= (HCI_HV3); 872 hdev->esco_type |= (ESCO_HV3); 873 } 874 875 if (lmp_esco_capable(hdev)) 876 hdev->esco_type |= (ESCO_EV3); 877 878 if (hdev->features[0][4] & LMP_EV4) 879 hdev->esco_type |= (ESCO_EV4); 880 881 if (hdev->features[0][4] & LMP_EV5) 882 hdev->esco_type |= (ESCO_EV5); 883 884 if (hdev->features[0][5] & LMP_EDR_ESCO_2M) 885 hdev->esco_type |= (ESCO_2EV3); 886 887 if (hdev->features[0][5] & LMP_EDR_ESCO_3M) 888 hdev->esco_type |= (ESCO_3EV3); 889 890 if (hdev->features[0][5] & LMP_EDR_3S_ESCO) 891 hdev->esco_type |= (ESCO_2EV5 | ESCO_3EV5); 892 893 return rp->status; 894 } 895 896 static u8 hci_cc_read_local_ext_features(struct hci_dev *hdev, void *data, 897 struct sk_buff *skb) 898 { 899 struct hci_rp_read_local_ext_features *rp = data; 900 901 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 902 903 if (rp->status) 904 return rp->status; 905 906 if (hdev->max_page < rp->max_page) { 907 if (test_bit(HCI_QUIRK_BROKEN_LOCAL_EXT_FEATURES_PAGE_2, 908 &hdev->quirks)) 909 bt_dev_warn(hdev, "broken local ext features page 2"); 910 else 911 hdev->max_page = rp->max_page; 912 } 913 914 if (rp->page < HCI_MAX_PAGES) 915 memcpy(hdev->features[rp->page], rp->features, 8); 916 917 return rp->status; 918 } 919 920 static u8 hci_cc_read_flow_control_mode(struct hci_dev *hdev, void *data, 921 struct sk_buff *skb) 922 { 923 struct hci_rp_read_flow_control_mode *rp = data; 924 925 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 926 927 if (rp->status) 928 return rp->status; 929 930 hdev->flow_ctl_mode = rp->mode; 931 932 return rp->status; 933 } 934 935 static u8 hci_cc_read_buffer_size(struct hci_dev *hdev, void *data, 936 struct sk_buff *skb) 937 { 938 struct hci_rp_read_buffer_size *rp = data; 939 940 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 941 942 if (rp->status) 943 return rp->status; 944 945 hdev->acl_mtu = __le16_to_cpu(rp->acl_mtu); 946 hdev->sco_mtu = rp->sco_mtu; 947 hdev->acl_pkts = __le16_to_cpu(rp->acl_max_pkt); 948 hdev->sco_pkts = __le16_to_cpu(rp->sco_max_pkt); 949 950 if (test_bit(HCI_QUIRK_FIXUP_BUFFER_SIZE, &hdev->quirks)) { 951 hdev->sco_mtu = 64; 952 hdev->sco_pkts = 8; 953 } 954 955 hdev->acl_cnt = hdev->acl_pkts; 956 hdev->sco_cnt = hdev->sco_pkts; 957 958 BT_DBG("%s acl mtu %d:%d sco mtu %d:%d", hdev->name, hdev->acl_mtu, 959 hdev->acl_pkts, hdev->sco_mtu, hdev->sco_pkts); 960 961 return rp->status; 962 } 963 964 static u8 hci_cc_read_bd_addr(struct hci_dev *hdev, void *data, 965 struct sk_buff *skb) 966 { 967 struct hci_rp_read_bd_addr *rp = data; 968 969 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 970 971 if (rp->status) 972 return rp->status; 973 974 if (test_bit(HCI_INIT, &hdev->flags)) 975 bacpy(&hdev->bdaddr, &rp->bdaddr); 976 977 if (hci_dev_test_flag(hdev, HCI_SETUP)) 978 bacpy(&hdev->setup_addr, &rp->bdaddr); 979 980 return rp->status; 981 } 982 983 static u8 hci_cc_read_local_pairing_opts(struct hci_dev *hdev, void *data, 984 struct sk_buff *skb) 985 { 986 struct hci_rp_read_local_pairing_opts *rp = data; 987 988 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 989 990 if (rp->status) 991 return rp->status; 992 993 if (hci_dev_test_flag(hdev, HCI_SETUP) || 994 hci_dev_test_flag(hdev, HCI_CONFIG)) { 995 hdev->pairing_opts = rp->pairing_opts; 996 hdev->max_enc_key_size = rp->max_key_size; 997 } 998 999 return rp->status; 1000 } 1001 1002 static u8 hci_cc_read_page_scan_activity(struct hci_dev *hdev, void *data, 1003 struct sk_buff *skb) 1004 { 1005 struct hci_rp_read_page_scan_activity *rp = data; 1006 1007 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1008 1009 if (rp->status) 1010 return rp->status; 1011 1012 if (test_bit(HCI_INIT, &hdev->flags)) { 1013 hdev->page_scan_interval = __le16_to_cpu(rp->interval); 1014 hdev->page_scan_window = __le16_to_cpu(rp->window); 1015 } 1016 1017 return rp->status; 1018 } 1019 1020 static u8 hci_cc_write_page_scan_activity(struct hci_dev *hdev, void *data, 1021 struct sk_buff *skb) 1022 { 1023 struct hci_ev_status *rp = data; 1024 struct hci_cp_write_page_scan_activity *sent; 1025 1026 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1027 1028 if (rp->status) 1029 return rp->status; 1030 1031 sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_PAGE_SCAN_ACTIVITY); 1032 if (!sent) 1033 return rp->status; 1034 1035 hdev->page_scan_interval = __le16_to_cpu(sent->interval); 1036 hdev->page_scan_window = __le16_to_cpu(sent->window); 1037 1038 return rp->status; 1039 } 1040 1041 static u8 hci_cc_read_page_scan_type(struct hci_dev *hdev, void *data, 1042 struct sk_buff *skb) 1043 { 1044 struct hci_rp_read_page_scan_type *rp = data; 1045 1046 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1047 1048 if (rp->status) 1049 return rp->status; 1050 1051 if (test_bit(HCI_INIT, &hdev->flags)) 1052 hdev->page_scan_type = rp->type; 1053 1054 return rp->status; 1055 } 1056 1057 static u8 hci_cc_write_page_scan_type(struct hci_dev *hdev, void *data, 1058 struct sk_buff *skb) 1059 { 1060 struct hci_ev_status *rp = data; 1061 u8 *type; 1062 1063 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1064 1065 if (rp->status) 1066 return rp->status; 1067 1068 type = hci_sent_cmd_data(hdev, HCI_OP_WRITE_PAGE_SCAN_TYPE); 1069 if (type) 1070 hdev->page_scan_type = *type; 1071 1072 return rp->status; 1073 } 1074 1075 static u8 hci_cc_read_data_block_size(struct hci_dev *hdev, void *data, 1076 struct sk_buff *skb) 1077 { 1078 struct hci_rp_read_data_block_size *rp = data; 1079 1080 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1081 1082 if (rp->status) 1083 return rp->status; 1084 1085 hdev->block_mtu = __le16_to_cpu(rp->max_acl_len); 1086 hdev->block_len = __le16_to_cpu(rp->block_len); 1087 hdev->num_blocks = __le16_to_cpu(rp->num_blocks); 1088 1089 hdev->block_cnt = hdev->num_blocks; 1090 1091 BT_DBG("%s blk mtu %d cnt %d len %d", hdev->name, hdev->block_mtu, 1092 hdev->block_cnt, hdev->block_len); 1093 1094 return rp->status; 1095 } 1096 1097 static u8 hci_cc_read_clock(struct hci_dev *hdev, void *data, 1098 struct sk_buff *skb) 1099 { 1100 struct hci_rp_read_clock *rp = data; 1101 struct hci_cp_read_clock *cp; 1102 struct hci_conn *conn; 1103 1104 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1105 1106 if (rp->status) 1107 return rp->status; 1108 1109 hci_dev_lock(hdev); 1110 1111 cp = hci_sent_cmd_data(hdev, HCI_OP_READ_CLOCK); 1112 if (!cp) 1113 goto unlock; 1114 1115 if (cp->which == 0x00) { 1116 hdev->clock = le32_to_cpu(rp->clock); 1117 goto unlock; 1118 } 1119 1120 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(rp->handle)); 1121 if (conn) { 1122 conn->clock = le32_to_cpu(rp->clock); 1123 conn->clock_accuracy = le16_to_cpu(rp->accuracy); 1124 } 1125 1126 unlock: 1127 hci_dev_unlock(hdev); 1128 return rp->status; 1129 } 1130 1131 static u8 hci_cc_read_local_amp_info(struct hci_dev *hdev, void *data, 1132 struct sk_buff *skb) 1133 { 1134 struct hci_rp_read_local_amp_info *rp = data; 1135 1136 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1137 1138 if (rp->status) 1139 return rp->status; 1140 1141 hdev->amp_status = rp->amp_status; 1142 hdev->amp_total_bw = __le32_to_cpu(rp->total_bw); 1143 hdev->amp_max_bw = __le32_to_cpu(rp->max_bw); 1144 hdev->amp_min_latency = __le32_to_cpu(rp->min_latency); 1145 hdev->amp_max_pdu = __le32_to_cpu(rp->max_pdu); 1146 hdev->amp_type = rp->amp_type; 1147 hdev->amp_pal_cap = __le16_to_cpu(rp->pal_cap); 1148 hdev->amp_assoc_size = __le16_to_cpu(rp->max_assoc_size); 1149 hdev->amp_be_flush_to = __le32_to_cpu(rp->be_flush_to); 1150 hdev->amp_max_flush_to = __le32_to_cpu(rp->max_flush_to); 1151 1152 return rp->status; 1153 } 1154 1155 static u8 hci_cc_read_inq_rsp_tx_power(struct hci_dev *hdev, void *data, 1156 struct sk_buff *skb) 1157 { 1158 struct hci_rp_read_inq_rsp_tx_power *rp = data; 1159 1160 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1161 1162 if (rp->status) 1163 return rp->status; 1164 1165 hdev->inq_tx_power = rp->tx_power; 1166 1167 return rp->status; 1168 } 1169 1170 static u8 hci_cc_read_def_err_data_reporting(struct hci_dev *hdev, void *data, 1171 struct sk_buff *skb) 1172 { 1173 struct hci_rp_read_def_err_data_reporting *rp = data; 1174 1175 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1176 1177 if (rp->status) 1178 return rp->status; 1179 1180 hdev->err_data_reporting = rp->err_data_reporting; 1181 1182 return rp->status; 1183 } 1184 1185 static u8 hci_cc_write_def_err_data_reporting(struct hci_dev *hdev, void *data, 1186 struct sk_buff *skb) 1187 { 1188 struct hci_ev_status *rp = data; 1189 struct hci_cp_write_def_err_data_reporting *cp; 1190 1191 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1192 1193 if (rp->status) 1194 return rp->status; 1195 1196 cp = hci_sent_cmd_data(hdev, HCI_OP_WRITE_DEF_ERR_DATA_REPORTING); 1197 if (!cp) 1198 return rp->status; 1199 1200 hdev->err_data_reporting = cp->err_data_reporting; 1201 1202 return rp->status; 1203 } 1204 1205 static u8 hci_cc_pin_code_reply(struct hci_dev *hdev, void *data, 1206 struct sk_buff *skb) 1207 { 1208 struct hci_rp_pin_code_reply *rp = data; 1209 struct hci_cp_pin_code_reply *cp; 1210 struct hci_conn *conn; 1211 1212 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1213 1214 hci_dev_lock(hdev); 1215 1216 if (hci_dev_test_flag(hdev, HCI_MGMT)) 1217 mgmt_pin_code_reply_complete(hdev, &rp->bdaddr, rp->status); 1218 1219 if (rp->status) 1220 goto unlock; 1221 1222 cp = hci_sent_cmd_data(hdev, HCI_OP_PIN_CODE_REPLY); 1223 if (!cp) 1224 goto unlock; 1225 1226 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &cp->bdaddr); 1227 if (conn) 1228 conn->pin_length = cp->pin_len; 1229 1230 unlock: 1231 hci_dev_unlock(hdev); 1232 return rp->status; 1233 } 1234 1235 static u8 hci_cc_pin_code_neg_reply(struct hci_dev *hdev, void *data, 1236 struct sk_buff *skb) 1237 { 1238 struct hci_rp_pin_code_neg_reply *rp = data; 1239 1240 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1241 1242 hci_dev_lock(hdev); 1243 1244 if (hci_dev_test_flag(hdev, HCI_MGMT)) 1245 mgmt_pin_code_neg_reply_complete(hdev, &rp->bdaddr, 1246 rp->status); 1247 1248 hci_dev_unlock(hdev); 1249 1250 return rp->status; 1251 } 1252 1253 static u8 hci_cc_le_read_buffer_size(struct hci_dev *hdev, void *data, 1254 struct sk_buff *skb) 1255 { 1256 struct hci_rp_le_read_buffer_size *rp = data; 1257 1258 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1259 1260 if (rp->status) 1261 return rp->status; 1262 1263 hdev->le_mtu = __le16_to_cpu(rp->le_mtu); 1264 hdev->le_pkts = rp->le_max_pkt; 1265 1266 hdev->le_cnt = hdev->le_pkts; 1267 1268 BT_DBG("%s le mtu %d:%d", hdev->name, hdev->le_mtu, hdev->le_pkts); 1269 1270 return rp->status; 1271 } 1272 1273 static u8 hci_cc_le_read_local_features(struct hci_dev *hdev, void *data, 1274 struct sk_buff *skb) 1275 { 1276 struct hci_rp_le_read_local_features *rp = data; 1277 1278 BT_DBG("%s status 0x%2.2x", hdev->name, rp->status); 1279 1280 if (rp->status) 1281 return rp->status; 1282 1283 memcpy(hdev->le_features, rp->features, 8); 1284 1285 return rp->status; 1286 } 1287 1288 static u8 hci_cc_le_read_adv_tx_power(struct hci_dev *hdev, void *data, 1289 struct sk_buff *skb) 1290 { 1291 struct hci_rp_le_read_adv_tx_power *rp = data; 1292 1293 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1294 1295 if (rp->status) 1296 return rp->status; 1297 1298 hdev->adv_tx_power = rp->tx_power; 1299 1300 return rp->status; 1301 } 1302 1303 static u8 hci_cc_user_confirm_reply(struct hci_dev *hdev, void *data, 1304 struct sk_buff *skb) 1305 { 1306 struct hci_rp_user_confirm_reply *rp = data; 1307 1308 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1309 1310 hci_dev_lock(hdev); 1311 1312 if (hci_dev_test_flag(hdev, HCI_MGMT)) 1313 mgmt_user_confirm_reply_complete(hdev, &rp->bdaddr, ACL_LINK, 0, 1314 rp->status); 1315 1316 hci_dev_unlock(hdev); 1317 1318 return rp->status; 1319 } 1320 1321 static u8 hci_cc_user_confirm_neg_reply(struct hci_dev *hdev, void *data, 1322 struct sk_buff *skb) 1323 { 1324 struct hci_rp_user_confirm_reply *rp = data; 1325 1326 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1327 1328 hci_dev_lock(hdev); 1329 1330 if (hci_dev_test_flag(hdev, HCI_MGMT)) 1331 mgmt_user_confirm_neg_reply_complete(hdev, &rp->bdaddr, 1332 ACL_LINK, 0, rp->status); 1333 1334 hci_dev_unlock(hdev); 1335 1336 return rp->status; 1337 } 1338 1339 static u8 hci_cc_user_passkey_reply(struct hci_dev *hdev, void *data, 1340 struct sk_buff *skb) 1341 { 1342 struct hci_rp_user_confirm_reply *rp = data; 1343 1344 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1345 1346 hci_dev_lock(hdev); 1347 1348 if (hci_dev_test_flag(hdev, HCI_MGMT)) 1349 mgmt_user_passkey_reply_complete(hdev, &rp->bdaddr, ACL_LINK, 1350 0, rp->status); 1351 1352 hci_dev_unlock(hdev); 1353 1354 return rp->status; 1355 } 1356 1357 static u8 hci_cc_user_passkey_neg_reply(struct hci_dev *hdev, void *data, 1358 struct sk_buff *skb) 1359 { 1360 struct hci_rp_user_confirm_reply *rp = data; 1361 1362 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1363 1364 hci_dev_lock(hdev); 1365 1366 if (hci_dev_test_flag(hdev, HCI_MGMT)) 1367 mgmt_user_passkey_neg_reply_complete(hdev, &rp->bdaddr, 1368 ACL_LINK, 0, rp->status); 1369 1370 hci_dev_unlock(hdev); 1371 1372 return rp->status; 1373 } 1374 1375 static u8 hci_cc_read_local_oob_data(struct hci_dev *hdev, void *data, 1376 struct sk_buff *skb) 1377 { 1378 struct hci_rp_read_local_oob_data *rp = data; 1379 1380 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1381 1382 return rp->status; 1383 } 1384 1385 static u8 hci_cc_read_local_oob_ext_data(struct hci_dev *hdev, void *data, 1386 struct sk_buff *skb) 1387 { 1388 struct hci_rp_read_local_oob_ext_data *rp = data; 1389 1390 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1391 1392 return rp->status; 1393 } 1394 1395 static u8 hci_cc_le_set_random_addr(struct hci_dev *hdev, void *data, 1396 struct sk_buff *skb) 1397 { 1398 struct hci_ev_status *rp = data; 1399 bdaddr_t *sent; 1400 1401 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1402 1403 if (rp->status) 1404 return rp->status; 1405 1406 sent = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_RANDOM_ADDR); 1407 if (!sent) 1408 return rp->status; 1409 1410 hci_dev_lock(hdev); 1411 1412 bacpy(&hdev->random_addr, sent); 1413 1414 if (!bacmp(&hdev->rpa, sent)) { 1415 hci_dev_clear_flag(hdev, HCI_RPA_EXPIRED); 1416 queue_delayed_work(hdev->workqueue, &hdev->rpa_expired, 1417 secs_to_jiffies(hdev->rpa_timeout)); 1418 } 1419 1420 hci_dev_unlock(hdev); 1421 1422 return rp->status; 1423 } 1424 1425 static u8 hci_cc_le_set_default_phy(struct hci_dev *hdev, void *data, 1426 struct sk_buff *skb) 1427 { 1428 struct hci_ev_status *rp = data; 1429 struct hci_cp_le_set_default_phy *cp; 1430 1431 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1432 1433 if (rp->status) 1434 return rp->status; 1435 1436 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_DEFAULT_PHY); 1437 if (!cp) 1438 return rp->status; 1439 1440 hci_dev_lock(hdev); 1441 1442 hdev->le_tx_def_phys = cp->tx_phys; 1443 hdev->le_rx_def_phys = cp->rx_phys; 1444 1445 hci_dev_unlock(hdev); 1446 1447 return rp->status; 1448 } 1449 1450 static u8 hci_cc_le_set_adv_set_random_addr(struct hci_dev *hdev, void *data, 1451 struct sk_buff *skb) 1452 { 1453 struct hci_ev_status *rp = data; 1454 struct hci_cp_le_set_adv_set_rand_addr *cp; 1455 struct adv_info *adv; 1456 1457 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1458 1459 if (rp->status) 1460 return rp->status; 1461 1462 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_ADV_SET_RAND_ADDR); 1463 /* Update only in case the adv instance since handle 0x00 shall be using 1464 * HCI_OP_LE_SET_RANDOM_ADDR since that allows both extended and 1465 * non-extended adverting. 1466 */ 1467 if (!cp || !cp->handle) 1468 return rp->status; 1469 1470 hci_dev_lock(hdev); 1471 1472 adv = hci_find_adv_instance(hdev, cp->handle); 1473 if (adv) { 1474 bacpy(&adv->random_addr, &cp->bdaddr); 1475 if (!bacmp(&hdev->rpa, &cp->bdaddr)) { 1476 adv->rpa_expired = false; 1477 queue_delayed_work(hdev->workqueue, 1478 &adv->rpa_expired_cb, 1479 secs_to_jiffies(hdev->rpa_timeout)); 1480 } 1481 } 1482 1483 hci_dev_unlock(hdev); 1484 1485 return rp->status; 1486 } 1487 1488 static u8 hci_cc_le_remove_adv_set(struct hci_dev *hdev, void *data, 1489 struct sk_buff *skb) 1490 { 1491 struct hci_ev_status *rp = data; 1492 u8 *instance; 1493 int err; 1494 1495 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1496 1497 if (rp->status) 1498 return rp->status; 1499 1500 instance = hci_sent_cmd_data(hdev, HCI_OP_LE_REMOVE_ADV_SET); 1501 if (!instance) 1502 return rp->status; 1503 1504 hci_dev_lock(hdev); 1505 1506 err = hci_remove_adv_instance(hdev, *instance); 1507 if (!err) 1508 mgmt_advertising_removed(hci_skb_sk(hdev->sent_cmd), hdev, 1509 *instance); 1510 1511 hci_dev_unlock(hdev); 1512 1513 return rp->status; 1514 } 1515 1516 static u8 hci_cc_le_clear_adv_sets(struct hci_dev *hdev, void *data, 1517 struct sk_buff *skb) 1518 { 1519 struct hci_ev_status *rp = data; 1520 struct adv_info *adv, *n; 1521 int err; 1522 1523 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1524 1525 if (rp->status) 1526 return rp->status; 1527 1528 if (!hci_sent_cmd_data(hdev, HCI_OP_LE_CLEAR_ADV_SETS)) 1529 return rp->status; 1530 1531 hci_dev_lock(hdev); 1532 1533 list_for_each_entry_safe(adv, n, &hdev->adv_instances, list) { 1534 u8 instance = adv->instance; 1535 1536 err = hci_remove_adv_instance(hdev, instance); 1537 if (!err) 1538 mgmt_advertising_removed(hci_skb_sk(hdev->sent_cmd), 1539 hdev, instance); 1540 } 1541 1542 hci_dev_unlock(hdev); 1543 1544 return rp->status; 1545 } 1546 1547 static u8 hci_cc_le_read_transmit_power(struct hci_dev *hdev, void *data, 1548 struct sk_buff *skb) 1549 { 1550 struct hci_rp_le_read_transmit_power *rp = data; 1551 1552 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1553 1554 if (rp->status) 1555 return rp->status; 1556 1557 hdev->min_le_tx_power = rp->min_le_tx_power; 1558 hdev->max_le_tx_power = rp->max_le_tx_power; 1559 1560 return rp->status; 1561 } 1562 1563 static u8 hci_cc_le_set_privacy_mode(struct hci_dev *hdev, void *data, 1564 struct sk_buff *skb) 1565 { 1566 struct hci_ev_status *rp = data; 1567 struct hci_cp_le_set_privacy_mode *cp; 1568 struct hci_conn_params *params; 1569 1570 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1571 1572 if (rp->status) 1573 return rp->status; 1574 1575 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_PRIVACY_MODE); 1576 if (!cp) 1577 return rp->status; 1578 1579 hci_dev_lock(hdev); 1580 1581 params = hci_conn_params_lookup(hdev, &cp->bdaddr, cp->bdaddr_type); 1582 if (params) 1583 WRITE_ONCE(params->privacy_mode, cp->mode); 1584 1585 hci_dev_unlock(hdev); 1586 1587 return rp->status; 1588 } 1589 1590 static u8 hci_cc_le_set_adv_enable(struct hci_dev *hdev, void *data, 1591 struct sk_buff *skb) 1592 { 1593 struct hci_ev_status *rp = data; 1594 __u8 *sent; 1595 1596 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1597 1598 if (rp->status) 1599 return rp->status; 1600 1601 sent = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_ADV_ENABLE); 1602 if (!sent) 1603 return rp->status; 1604 1605 hci_dev_lock(hdev); 1606 1607 /* If we're doing connection initiation as peripheral. Set a 1608 * timeout in case something goes wrong. 1609 */ 1610 if (*sent) { 1611 struct hci_conn *conn; 1612 1613 hci_dev_set_flag(hdev, HCI_LE_ADV); 1614 1615 conn = hci_lookup_le_connect(hdev); 1616 if (conn) 1617 queue_delayed_work(hdev->workqueue, 1618 &conn->le_conn_timeout, 1619 conn->conn_timeout); 1620 } else { 1621 hci_dev_clear_flag(hdev, HCI_LE_ADV); 1622 } 1623 1624 hci_dev_unlock(hdev); 1625 1626 return rp->status; 1627 } 1628 1629 static u8 hci_cc_le_set_ext_adv_enable(struct hci_dev *hdev, void *data, 1630 struct sk_buff *skb) 1631 { 1632 struct hci_cp_le_set_ext_adv_enable *cp; 1633 struct hci_cp_ext_adv_set *set; 1634 struct adv_info *adv = NULL, *n; 1635 struct hci_ev_status *rp = data; 1636 1637 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1638 1639 if (rp->status) 1640 return rp->status; 1641 1642 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_EXT_ADV_ENABLE); 1643 if (!cp) 1644 return rp->status; 1645 1646 set = (void *)cp->data; 1647 1648 hci_dev_lock(hdev); 1649 1650 if (cp->num_of_sets) 1651 adv = hci_find_adv_instance(hdev, set->handle); 1652 1653 if (cp->enable) { 1654 struct hci_conn *conn; 1655 1656 hci_dev_set_flag(hdev, HCI_LE_ADV); 1657 1658 if (adv && !adv->periodic) 1659 adv->enabled = true; 1660 1661 conn = hci_lookup_le_connect(hdev); 1662 if (conn) 1663 queue_delayed_work(hdev->workqueue, 1664 &conn->le_conn_timeout, 1665 conn->conn_timeout); 1666 } else { 1667 if (cp->num_of_sets) { 1668 if (adv) 1669 adv->enabled = false; 1670 1671 /* If just one instance was disabled check if there are 1672 * any other instance enabled before clearing HCI_LE_ADV 1673 */ 1674 list_for_each_entry_safe(adv, n, &hdev->adv_instances, 1675 list) { 1676 if (adv->enabled) 1677 goto unlock; 1678 } 1679 } else { 1680 /* All instances shall be considered disabled */ 1681 list_for_each_entry_safe(adv, n, &hdev->adv_instances, 1682 list) 1683 adv->enabled = false; 1684 } 1685 1686 hci_dev_clear_flag(hdev, HCI_LE_ADV); 1687 } 1688 1689 unlock: 1690 hci_dev_unlock(hdev); 1691 return rp->status; 1692 } 1693 1694 static u8 hci_cc_le_set_scan_param(struct hci_dev *hdev, void *data, 1695 struct sk_buff *skb) 1696 { 1697 struct hci_cp_le_set_scan_param *cp; 1698 struct hci_ev_status *rp = data; 1699 1700 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1701 1702 if (rp->status) 1703 return rp->status; 1704 1705 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_SCAN_PARAM); 1706 if (!cp) 1707 return rp->status; 1708 1709 hci_dev_lock(hdev); 1710 1711 hdev->le_scan_type = cp->type; 1712 1713 hci_dev_unlock(hdev); 1714 1715 return rp->status; 1716 } 1717 1718 static u8 hci_cc_le_set_ext_scan_param(struct hci_dev *hdev, void *data, 1719 struct sk_buff *skb) 1720 { 1721 struct hci_cp_le_set_ext_scan_params *cp; 1722 struct hci_ev_status *rp = data; 1723 struct hci_cp_le_scan_phy_params *phy_param; 1724 1725 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1726 1727 if (rp->status) 1728 return rp->status; 1729 1730 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_EXT_SCAN_PARAMS); 1731 if (!cp) 1732 return rp->status; 1733 1734 phy_param = (void *)cp->data; 1735 1736 hci_dev_lock(hdev); 1737 1738 hdev->le_scan_type = phy_param->type; 1739 1740 hci_dev_unlock(hdev); 1741 1742 return rp->status; 1743 } 1744 1745 static bool has_pending_adv_report(struct hci_dev *hdev) 1746 { 1747 struct discovery_state *d = &hdev->discovery; 1748 1749 return bacmp(&d->last_adv_addr, BDADDR_ANY); 1750 } 1751 1752 static void clear_pending_adv_report(struct hci_dev *hdev) 1753 { 1754 struct discovery_state *d = &hdev->discovery; 1755 1756 bacpy(&d->last_adv_addr, BDADDR_ANY); 1757 d->last_adv_data_len = 0; 1758 } 1759 1760 static void store_pending_adv_report(struct hci_dev *hdev, bdaddr_t *bdaddr, 1761 u8 bdaddr_type, s8 rssi, u32 flags, 1762 u8 *data, u8 len) 1763 { 1764 struct discovery_state *d = &hdev->discovery; 1765 1766 if (len > max_adv_len(hdev)) 1767 return; 1768 1769 bacpy(&d->last_adv_addr, bdaddr); 1770 d->last_adv_addr_type = bdaddr_type; 1771 d->last_adv_rssi = rssi; 1772 d->last_adv_flags = flags; 1773 memcpy(d->last_adv_data, data, len); 1774 d->last_adv_data_len = len; 1775 } 1776 1777 static void le_set_scan_enable_complete(struct hci_dev *hdev, u8 enable) 1778 { 1779 hci_dev_lock(hdev); 1780 1781 switch (enable) { 1782 case LE_SCAN_ENABLE: 1783 hci_dev_set_flag(hdev, HCI_LE_SCAN); 1784 if (hdev->le_scan_type == LE_SCAN_ACTIVE) 1785 clear_pending_adv_report(hdev); 1786 if (hci_dev_test_flag(hdev, HCI_MESH)) 1787 hci_discovery_set_state(hdev, DISCOVERY_FINDING); 1788 break; 1789 1790 case LE_SCAN_DISABLE: 1791 /* We do this here instead of when setting DISCOVERY_STOPPED 1792 * since the latter would potentially require waiting for 1793 * inquiry to stop too. 1794 */ 1795 if (has_pending_adv_report(hdev)) { 1796 struct discovery_state *d = &hdev->discovery; 1797 1798 mgmt_device_found(hdev, &d->last_adv_addr, LE_LINK, 1799 d->last_adv_addr_type, NULL, 1800 d->last_adv_rssi, d->last_adv_flags, 1801 d->last_adv_data, 1802 d->last_adv_data_len, NULL, 0, 0); 1803 } 1804 1805 /* Cancel this timer so that we don't try to disable scanning 1806 * when it's already disabled. 1807 */ 1808 cancel_delayed_work(&hdev->le_scan_disable); 1809 1810 hci_dev_clear_flag(hdev, HCI_LE_SCAN); 1811 1812 /* The HCI_LE_SCAN_INTERRUPTED flag indicates that we 1813 * interrupted scanning due to a connect request. Mark 1814 * therefore discovery as stopped. 1815 */ 1816 if (hci_dev_test_and_clear_flag(hdev, HCI_LE_SCAN_INTERRUPTED)) 1817 hci_discovery_set_state(hdev, DISCOVERY_STOPPED); 1818 else if (!hci_dev_test_flag(hdev, HCI_LE_ADV) && 1819 hdev->discovery.state == DISCOVERY_FINDING) 1820 queue_work(hdev->workqueue, &hdev->reenable_adv_work); 1821 1822 break; 1823 1824 default: 1825 bt_dev_err(hdev, "use of reserved LE_Scan_Enable param %d", 1826 enable); 1827 break; 1828 } 1829 1830 hci_dev_unlock(hdev); 1831 } 1832 1833 static u8 hci_cc_le_set_scan_enable(struct hci_dev *hdev, void *data, 1834 struct sk_buff *skb) 1835 { 1836 struct hci_cp_le_set_scan_enable *cp; 1837 struct hci_ev_status *rp = data; 1838 1839 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1840 1841 if (rp->status) 1842 return rp->status; 1843 1844 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_SCAN_ENABLE); 1845 if (!cp) 1846 return rp->status; 1847 1848 le_set_scan_enable_complete(hdev, cp->enable); 1849 1850 return rp->status; 1851 } 1852 1853 static u8 hci_cc_le_set_ext_scan_enable(struct hci_dev *hdev, void *data, 1854 struct sk_buff *skb) 1855 { 1856 struct hci_cp_le_set_ext_scan_enable *cp; 1857 struct hci_ev_status *rp = data; 1858 1859 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1860 1861 if (rp->status) 1862 return rp->status; 1863 1864 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_EXT_SCAN_ENABLE); 1865 if (!cp) 1866 return rp->status; 1867 1868 le_set_scan_enable_complete(hdev, cp->enable); 1869 1870 return rp->status; 1871 } 1872 1873 static u8 hci_cc_le_read_num_adv_sets(struct hci_dev *hdev, void *data, 1874 struct sk_buff *skb) 1875 { 1876 struct hci_rp_le_read_num_supported_adv_sets *rp = data; 1877 1878 bt_dev_dbg(hdev, "status 0x%2.2x No of Adv sets %u", rp->status, 1879 rp->num_of_sets); 1880 1881 if (rp->status) 1882 return rp->status; 1883 1884 hdev->le_num_of_adv_sets = rp->num_of_sets; 1885 1886 return rp->status; 1887 } 1888 1889 static u8 hci_cc_le_read_accept_list_size(struct hci_dev *hdev, void *data, 1890 struct sk_buff *skb) 1891 { 1892 struct hci_rp_le_read_accept_list_size *rp = data; 1893 1894 bt_dev_dbg(hdev, "status 0x%2.2x size %u", rp->status, rp->size); 1895 1896 if (rp->status) 1897 return rp->status; 1898 1899 hdev->le_accept_list_size = rp->size; 1900 1901 return rp->status; 1902 } 1903 1904 static u8 hci_cc_le_clear_accept_list(struct hci_dev *hdev, void *data, 1905 struct sk_buff *skb) 1906 { 1907 struct hci_ev_status *rp = data; 1908 1909 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1910 1911 if (rp->status) 1912 return rp->status; 1913 1914 hci_dev_lock(hdev); 1915 hci_bdaddr_list_clear(&hdev->le_accept_list); 1916 hci_dev_unlock(hdev); 1917 1918 return rp->status; 1919 } 1920 1921 static u8 hci_cc_le_add_to_accept_list(struct hci_dev *hdev, void *data, 1922 struct sk_buff *skb) 1923 { 1924 struct hci_cp_le_add_to_accept_list *sent; 1925 struct hci_ev_status *rp = data; 1926 1927 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1928 1929 if (rp->status) 1930 return rp->status; 1931 1932 sent = hci_sent_cmd_data(hdev, HCI_OP_LE_ADD_TO_ACCEPT_LIST); 1933 if (!sent) 1934 return rp->status; 1935 1936 hci_dev_lock(hdev); 1937 hci_bdaddr_list_add(&hdev->le_accept_list, &sent->bdaddr, 1938 sent->bdaddr_type); 1939 hci_dev_unlock(hdev); 1940 1941 return rp->status; 1942 } 1943 1944 static u8 hci_cc_le_del_from_accept_list(struct hci_dev *hdev, void *data, 1945 struct sk_buff *skb) 1946 { 1947 struct hci_cp_le_del_from_accept_list *sent; 1948 struct hci_ev_status *rp = data; 1949 1950 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1951 1952 if (rp->status) 1953 return rp->status; 1954 1955 sent = hci_sent_cmd_data(hdev, HCI_OP_LE_DEL_FROM_ACCEPT_LIST); 1956 if (!sent) 1957 return rp->status; 1958 1959 hci_dev_lock(hdev); 1960 hci_bdaddr_list_del(&hdev->le_accept_list, &sent->bdaddr, 1961 sent->bdaddr_type); 1962 hci_dev_unlock(hdev); 1963 1964 return rp->status; 1965 } 1966 1967 static u8 hci_cc_le_read_supported_states(struct hci_dev *hdev, void *data, 1968 struct sk_buff *skb) 1969 { 1970 struct hci_rp_le_read_supported_states *rp = data; 1971 1972 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1973 1974 if (rp->status) 1975 return rp->status; 1976 1977 memcpy(hdev->le_states, rp->le_states, 8); 1978 1979 return rp->status; 1980 } 1981 1982 static u8 hci_cc_le_read_def_data_len(struct hci_dev *hdev, void *data, 1983 struct sk_buff *skb) 1984 { 1985 struct hci_rp_le_read_def_data_len *rp = data; 1986 1987 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1988 1989 if (rp->status) 1990 return rp->status; 1991 1992 hdev->le_def_tx_len = le16_to_cpu(rp->tx_len); 1993 hdev->le_def_tx_time = le16_to_cpu(rp->tx_time); 1994 1995 return rp->status; 1996 } 1997 1998 static u8 hci_cc_le_write_def_data_len(struct hci_dev *hdev, void *data, 1999 struct sk_buff *skb) 2000 { 2001 struct hci_cp_le_write_def_data_len *sent; 2002 struct hci_ev_status *rp = data; 2003 2004 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 2005 2006 if (rp->status) 2007 return rp->status; 2008 2009 sent = hci_sent_cmd_data(hdev, HCI_OP_LE_WRITE_DEF_DATA_LEN); 2010 if (!sent) 2011 return rp->status; 2012 2013 hdev->le_def_tx_len = le16_to_cpu(sent->tx_len); 2014 hdev->le_def_tx_time = le16_to_cpu(sent->tx_time); 2015 2016 return rp->status; 2017 } 2018 2019 static u8 hci_cc_le_add_to_resolv_list(struct hci_dev *hdev, void *data, 2020 struct sk_buff *skb) 2021 { 2022 struct hci_cp_le_add_to_resolv_list *sent; 2023 struct hci_ev_status *rp = data; 2024 2025 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 2026 2027 if (rp->status) 2028 return rp->status; 2029 2030 sent = hci_sent_cmd_data(hdev, HCI_OP_LE_ADD_TO_RESOLV_LIST); 2031 if (!sent) 2032 return rp->status; 2033 2034 hci_dev_lock(hdev); 2035 hci_bdaddr_list_add_with_irk(&hdev->le_resolv_list, &sent->bdaddr, 2036 sent->bdaddr_type, sent->peer_irk, 2037 sent->local_irk); 2038 hci_dev_unlock(hdev); 2039 2040 return rp->status; 2041 } 2042 2043 static u8 hci_cc_le_del_from_resolv_list(struct hci_dev *hdev, void *data, 2044 struct sk_buff *skb) 2045 { 2046 struct hci_cp_le_del_from_resolv_list *sent; 2047 struct hci_ev_status *rp = data; 2048 2049 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 2050 2051 if (rp->status) 2052 return rp->status; 2053 2054 sent = hci_sent_cmd_data(hdev, HCI_OP_LE_DEL_FROM_RESOLV_LIST); 2055 if (!sent) 2056 return rp->status; 2057 2058 hci_dev_lock(hdev); 2059 hci_bdaddr_list_del_with_irk(&hdev->le_resolv_list, &sent->bdaddr, 2060 sent->bdaddr_type); 2061 hci_dev_unlock(hdev); 2062 2063 return rp->status; 2064 } 2065 2066 static u8 hci_cc_le_clear_resolv_list(struct hci_dev *hdev, void *data, 2067 struct sk_buff *skb) 2068 { 2069 struct hci_ev_status *rp = data; 2070 2071 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 2072 2073 if (rp->status) 2074 return rp->status; 2075 2076 hci_dev_lock(hdev); 2077 hci_bdaddr_list_clear(&hdev->le_resolv_list); 2078 hci_dev_unlock(hdev); 2079 2080 return rp->status; 2081 } 2082 2083 static u8 hci_cc_le_read_resolv_list_size(struct hci_dev *hdev, void *data, 2084 struct sk_buff *skb) 2085 { 2086 struct hci_rp_le_read_resolv_list_size *rp = data; 2087 2088 bt_dev_dbg(hdev, "status 0x%2.2x size %u", rp->status, rp->size); 2089 2090 if (rp->status) 2091 return rp->status; 2092 2093 hdev->le_resolv_list_size = rp->size; 2094 2095 return rp->status; 2096 } 2097 2098 static u8 hci_cc_le_set_addr_resolution_enable(struct hci_dev *hdev, void *data, 2099 struct sk_buff *skb) 2100 { 2101 struct hci_ev_status *rp = data; 2102 __u8 *sent; 2103 2104 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 2105 2106 if (rp->status) 2107 return rp->status; 2108 2109 sent = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_ADDR_RESOLV_ENABLE); 2110 if (!sent) 2111 return rp->status; 2112 2113 hci_dev_lock(hdev); 2114 2115 if (*sent) 2116 hci_dev_set_flag(hdev, HCI_LL_RPA_RESOLUTION); 2117 else 2118 hci_dev_clear_flag(hdev, HCI_LL_RPA_RESOLUTION); 2119 2120 hci_dev_unlock(hdev); 2121 2122 return rp->status; 2123 } 2124 2125 static u8 hci_cc_le_read_max_data_len(struct hci_dev *hdev, void *data, 2126 struct sk_buff *skb) 2127 { 2128 struct hci_rp_le_read_max_data_len *rp = data; 2129 2130 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 2131 2132 if (rp->status) 2133 return rp->status; 2134 2135 hdev->le_max_tx_len = le16_to_cpu(rp->tx_len); 2136 hdev->le_max_tx_time = le16_to_cpu(rp->tx_time); 2137 hdev->le_max_rx_len = le16_to_cpu(rp->rx_len); 2138 hdev->le_max_rx_time = le16_to_cpu(rp->rx_time); 2139 2140 return rp->status; 2141 } 2142 2143 static u8 hci_cc_write_le_host_supported(struct hci_dev *hdev, void *data, 2144 struct sk_buff *skb) 2145 { 2146 struct hci_cp_write_le_host_supported *sent; 2147 struct hci_ev_status *rp = data; 2148 2149 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 2150 2151 if (rp->status) 2152 return rp->status; 2153 2154 sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_LE_HOST_SUPPORTED); 2155 if (!sent) 2156 return rp->status; 2157 2158 hci_dev_lock(hdev); 2159 2160 if (sent->le) { 2161 hdev->features[1][0] |= LMP_HOST_LE; 2162 hci_dev_set_flag(hdev, HCI_LE_ENABLED); 2163 } else { 2164 hdev->features[1][0] &= ~LMP_HOST_LE; 2165 hci_dev_clear_flag(hdev, HCI_LE_ENABLED); 2166 hci_dev_clear_flag(hdev, HCI_ADVERTISING); 2167 } 2168 2169 if (sent->simul) 2170 hdev->features[1][0] |= LMP_HOST_LE_BREDR; 2171 else 2172 hdev->features[1][0] &= ~LMP_HOST_LE_BREDR; 2173 2174 hci_dev_unlock(hdev); 2175 2176 return rp->status; 2177 } 2178 2179 static u8 hci_cc_set_adv_param(struct hci_dev *hdev, void *data, 2180 struct sk_buff *skb) 2181 { 2182 struct hci_cp_le_set_adv_param *cp; 2183 struct hci_ev_status *rp = data; 2184 2185 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 2186 2187 if (rp->status) 2188 return rp->status; 2189 2190 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_ADV_PARAM); 2191 if (!cp) 2192 return rp->status; 2193 2194 hci_dev_lock(hdev); 2195 hdev->adv_addr_type = cp->own_address_type; 2196 hci_dev_unlock(hdev); 2197 2198 return rp->status; 2199 } 2200 2201 static u8 hci_cc_set_ext_adv_param(struct hci_dev *hdev, void *data, 2202 struct sk_buff *skb) 2203 { 2204 struct hci_rp_le_set_ext_adv_params *rp = data; 2205 struct hci_cp_le_set_ext_adv_params *cp; 2206 struct adv_info *adv_instance; 2207 2208 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 2209 2210 if (rp->status) 2211 return rp->status; 2212 2213 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_EXT_ADV_PARAMS); 2214 if (!cp) 2215 return rp->status; 2216 2217 hci_dev_lock(hdev); 2218 hdev->adv_addr_type = cp->own_addr_type; 2219 if (!cp->handle) { 2220 /* Store in hdev for instance 0 */ 2221 hdev->adv_tx_power = rp->tx_power; 2222 } else { 2223 adv_instance = hci_find_adv_instance(hdev, cp->handle); 2224 if (adv_instance) 2225 adv_instance->tx_power = rp->tx_power; 2226 } 2227 /* Update adv data as tx power is known now */ 2228 hci_update_adv_data(hdev, cp->handle); 2229 2230 hci_dev_unlock(hdev); 2231 2232 return rp->status; 2233 } 2234 2235 static u8 hci_cc_read_rssi(struct hci_dev *hdev, void *data, 2236 struct sk_buff *skb) 2237 { 2238 struct hci_rp_read_rssi *rp = data; 2239 struct hci_conn *conn; 2240 2241 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 2242 2243 if (rp->status) 2244 return rp->status; 2245 2246 hci_dev_lock(hdev); 2247 2248 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(rp->handle)); 2249 if (conn) 2250 conn->rssi = rp->rssi; 2251 2252 hci_dev_unlock(hdev); 2253 2254 return rp->status; 2255 } 2256 2257 static u8 hci_cc_read_tx_power(struct hci_dev *hdev, void *data, 2258 struct sk_buff *skb) 2259 { 2260 struct hci_cp_read_tx_power *sent; 2261 struct hci_rp_read_tx_power *rp = data; 2262 struct hci_conn *conn; 2263 2264 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 2265 2266 if (rp->status) 2267 return rp->status; 2268 2269 sent = hci_sent_cmd_data(hdev, HCI_OP_READ_TX_POWER); 2270 if (!sent) 2271 return rp->status; 2272 2273 hci_dev_lock(hdev); 2274 2275 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(rp->handle)); 2276 if (!conn) 2277 goto unlock; 2278 2279 switch (sent->type) { 2280 case 0x00: 2281 conn->tx_power = rp->tx_power; 2282 break; 2283 case 0x01: 2284 conn->max_tx_power = rp->tx_power; 2285 break; 2286 } 2287 2288 unlock: 2289 hci_dev_unlock(hdev); 2290 return rp->status; 2291 } 2292 2293 static u8 hci_cc_write_ssp_debug_mode(struct hci_dev *hdev, void *data, 2294 struct sk_buff *skb) 2295 { 2296 struct hci_ev_status *rp = data; 2297 u8 *mode; 2298 2299 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 2300 2301 if (rp->status) 2302 return rp->status; 2303 2304 mode = hci_sent_cmd_data(hdev, HCI_OP_WRITE_SSP_DEBUG_MODE); 2305 if (mode) 2306 hdev->ssp_debug_mode = *mode; 2307 2308 return rp->status; 2309 } 2310 2311 static void hci_cs_inquiry(struct hci_dev *hdev, __u8 status) 2312 { 2313 bt_dev_dbg(hdev, "status 0x%2.2x", status); 2314 2315 if (status) { 2316 hci_conn_check_pending(hdev); 2317 return; 2318 } 2319 2320 if (hci_sent_cmd_data(hdev, HCI_OP_INQUIRY)) 2321 set_bit(HCI_INQUIRY, &hdev->flags); 2322 } 2323 2324 static void hci_cs_create_conn(struct hci_dev *hdev, __u8 status) 2325 { 2326 struct hci_cp_create_conn *cp; 2327 struct hci_conn *conn; 2328 2329 bt_dev_dbg(hdev, "status 0x%2.2x", status); 2330 2331 cp = hci_sent_cmd_data(hdev, HCI_OP_CREATE_CONN); 2332 if (!cp) 2333 return; 2334 2335 hci_dev_lock(hdev); 2336 2337 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &cp->bdaddr); 2338 2339 bt_dev_dbg(hdev, "bdaddr %pMR hcon %p", &cp->bdaddr, conn); 2340 2341 if (status) { 2342 if (conn && conn->state == BT_CONNECT) { 2343 if (status != 0x0c || conn->attempt > 2) { 2344 conn->state = BT_CLOSED; 2345 hci_connect_cfm(conn, status); 2346 hci_conn_del(conn); 2347 } else 2348 conn->state = BT_CONNECT2; 2349 } 2350 } else { 2351 if (!conn) { 2352 conn = hci_conn_add_unset(hdev, ACL_LINK, &cp->bdaddr, 2353 HCI_ROLE_MASTER); 2354 if (!conn) 2355 bt_dev_err(hdev, "no memory for new connection"); 2356 } 2357 } 2358 2359 hci_dev_unlock(hdev); 2360 } 2361 2362 static void hci_cs_add_sco(struct hci_dev *hdev, __u8 status) 2363 { 2364 struct hci_cp_add_sco *cp; 2365 struct hci_conn *acl; 2366 struct hci_link *link; 2367 __u16 handle; 2368 2369 bt_dev_dbg(hdev, "status 0x%2.2x", status); 2370 2371 if (!status) 2372 return; 2373 2374 cp = hci_sent_cmd_data(hdev, HCI_OP_ADD_SCO); 2375 if (!cp) 2376 return; 2377 2378 handle = __le16_to_cpu(cp->handle); 2379 2380 bt_dev_dbg(hdev, "handle 0x%4.4x", handle); 2381 2382 hci_dev_lock(hdev); 2383 2384 acl = hci_conn_hash_lookup_handle(hdev, handle); 2385 if (acl) { 2386 link = list_first_entry_or_null(&acl->link_list, 2387 struct hci_link, list); 2388 if (link && link->conn) { 2389 link->conn->state = BT_CLOSED; 2390 2391 hci_connect_cfm(link->conn, status); 2392 hci_conn_del(link->conn); 2393 } 2394 } 2395 2396 hci_dev_unlock(hdev); 2397 } 2398 2399 static void hci_cs_auth_requested(struct hci_dev *hdev, __u8 status) 2400 { 2401 struct hci_cp_auth_requested *cp; 2402 struct hci_conn *conn; 2403 2404 bt_dev_dbg(hdev, "status 0x%2.2x", status); 2405 2406 if (!status) 2407 return; 2408 2409 cp = hci_sent_cmd_data(hdev, HCI_OP_AUTH_REQUESTED); 2410 if (!cp) 2411 return; 2412 2413 hci_dev_lock(hdev); 2414 2415 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle)); 2416 if (conn) { 2417 if (conn->state == BT_CONFIG) { 2418 hci_connect_cfm(conn, status); 2419 hci_conn_drop(conn); 2420 } 2421 } 2422 2423 hci_dev_unlock(hdev); 2424 } 2425 2426 static void hci_cs_set_conn_encrypt(struct hci_dev *hdev, __u8 status) 2427 { 2428 struct hci_cp_set_conn_encrypt *cp; 2429 struct hci_conn *conn; 2430 2431 bt_dev_dbg(hdev, "status 0x%2.2x", status); 2432 2433 if (!status) 2434 return; 2435 2436 cp = hci_sent_cmd_data(hdev, HCI_OP_SET_CONN_ENCRYPT); 2437 if (!cp) 2438 return; 2439 2440 hci_dev_lock(hdev); 2441 2442 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle)); 2443 if (conn) { 2444 if (conn->state == BT_CONFIG) { 2445 hci_connect_cfm(conn, status); 2446 hci_conn_drop(conn); 2447 } 2448 } 2449 2450 hci_dev_unlock(hdev); 2451 } 2452 2453 static int hci_outgoing_auth_needed(struct hci_dev *hdev, 2454 struct hci_conn *conn) 2455 { 2456 if (conn->state != BT_CONFIG || !conn->out) 2457 return 0; 2458 2459 if (conn->pending_sec_level == BT_SECURITY_SDP) 2460 return 0; 2461 2462 /* Only request authentication for SSP connections or non-SSP 2463 * devices with sec_level MEDIUM or HIGH or if MITM protection 2464 * is requested. 2465 */ 2466 if (!hci_conn_ssp_enabled(conn) && !(conn->auth_type & 0x01) && 2467 conn->pending_sec_level != BT_SECURITY_FIPS && 2468 conn->pending_sec_level != BT_SECURITY_HIGH && 2469 conn->pending_sec_level != BT_SECURITY_MEDIUM) 2470 return 0; 2471 2472 return 1; 2473 } 2474 2475 static int hci_resolve_name(struct hci_dev *hdev, 2476 struct inquiry_entry *e) 2477 { 2478 struct hci_cp_remote_name_req cp; 2479 2480 memset(&cp, 0, sizeof(cp)); 2481 2482 bacpy(&cp.bdaddr, &e->data.bdaddr); 2483 cp.pscan_rep_mode = e->data.pscan_rep_mode; 2484 cp.pscan_mode = e->data.pscan_mode; 2485 cp.clock_offset = e->data.clock_offset; 2486 2487 return hci_send_cmd(hdev, HCI_OP_REMOTE_NAME_REQ, sizeof(cp), &cp); 2488 } 2489 2490 static bool hci_resolve_next_name(struct hci_dev *hdev) 2491 { 2492 struct discovery_state *discov = &hdev->discovery; 2493 struct inquiry_entry *e; 2494 2495 if (list_empty(&discov->resolve)) 2496 return false; 2497 2498 /* We should stop if we already spent too much time resolving names. */ 2499 if (time_after(jiffies, discov->name_resolve_timeout)) { 2500 bt_dev_warn_ratelimited(hdev, "Name resolve takes too long."); 2501 return false; 2502 } 2503 2504 e = hci_inquiry_cache_lookup_resolve(hdev, BDADDR_ANY, NAME_NEEDED); 2505 if (!e) 2506 return false; 2507 2508 if (hci_resolve_name(hdev, e) == 0) { 2509 e->name_state = NAME_PENDING; 2510 return true; 2511 } 2512 2513 return false; 2514 } 2515 2516 static void hci_check_pending_name(struct hci_dev *hdev, struct hci_conn *conn, 2517 bdaddr_t *bdaddr, u8 *name, u8 name_len) 2518 { 2519 struct discovery_state *discov = &hdev->discovery; 2520 struct inquiry_entry *e; 2521 2522 /* Update the mgmt connected state if necessary. Be careful with 2523 * conn objects that exist but are not (yet) connected however. 2524 * Only those in BT_CONFIG or BT_CONNECTED states can be 2525 * considered connected. 2526 */ 2527 if (conn && (conn->state == BT_CONFIG || conn->state == BT_CONNECTED)) 2528 mgmt_device_connected(hdev, conn, name, name_len); 2529 2530 if (discov->state == DISCOVERY_STOPPED) 2531 return; 2532 2533 if (discov->state == DISCOVERY_STOPPING) 2534 goto discov_complete; 2535 2536 if (discov->state != DISCOVERY_RESOLVING) 2537 return; 2538 2539 e = hci_inquiry_cache_lookup_resolve(hdev, bdaddr, NAME_PENDING); 2540 /* If the device was not found in a list of found devices names of which 2541 * are pending. there is no need to continue resolving a next name as it 2542 * will be done upon receiving another Remote Name Request Complete 2543 * Event */ 2544 if (!e) 2545 return; 2546 2547 list_del(&e->list); 2548 2549 e->name_state = name ? NAME_KNOWN : NAME_NOT_KNOWN; 2550 mgmt_remote_name(hdev, bdaddr, ACL_LINK, 0x00, e->data.rssi, 2551 name, name_len); 2552 2553 if (hci_resolve_next_name(hdev)) 2554 return; 2555 2556 discov_complete: 2557 hci_discovery_set_state(hdev, DISCOVERY_STOPPED); 2558 } 2559 2560 static void hci_cs_remote_name_req(struct hci_dev *hdev, __u8 status) 2561 { 2562 struct hci_cp_remote_name_req *cp; 2563 struct hci_conn *conn; 2564 2565 bt_dev_dbg(hdev, "status 0x%2.2x", status); 2566 2567 /* If successful wait for the name req complete event before 2568 * checking for the need to do authentication */ 2569 if (!status) 2570 return; 2571 2572 cp = hci_sent_cmd_data(hdev, HCI_OP_REMOTE_NAME_REQ); 2573 if (!cp) 2574 return; 2575 2576 hci_dev_lock(hdev); 2577 2578 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &cp->bdaddr); 2579 2580 if (hci_dev_test_flag(hdev, HCI_MGMT)) 2581 hci_check_pending_name(hdev, conn, &cp->bdaddr, NULL, 0); 2582 2583 if (!conn) 2584 goto unlock; 2585 2586 if (!hci_outgoing_auth_needed(hdev, conn)) 2587 goto unlock; 2588 2589 if (!test_and_set_bit(HCI_CONN_AUTH_PEND, &conn->flags)) { 2590 struct hci_cp_auth_requested auth_cp; 2591 2592 set_bit(HCI_CONN_AUTH_INITIATOR, &conn->flags); 2593 2594 auth_cp.handle = __cpu_to_le16(conn->handle); 2595 hci_send_cmd(hdev, HCI_OP_AUTH_REQUESTED, 2596 sizeof(auth_cp), &auth_cp); 2597 } 2598 2599 unlock: 2600 hci_dev_unlock(hdev); 2601 } 2602 2603 static void hci_cs_read_remote_features(struct hci_dev *hdev, __u8 status) 2604 { 2605 struct hci_cp_read_remote_features *cp; 2606 struct hci_conn *conn; 2607 2608 bt_dev_dbg(hdev, "status 0x%2.2x", status); 2609 2610 if (!status) 2611 return; 2612 2613 cp = hci_sent_cmd_data(hdev, HCI_OP_READ_REMOTE_FEATURES); 2614 if (!cp) 2615 return; 2616 2617 hci_dev_lock(hdev); 2618 2619 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle)); 2620 if (conn) { 2621 if (conn->state == BT_CONFIG) { 2622 hci_connect_cfm(conn, status); 2623 hci_conn_drop(conn); 2624 } 2625 } 2626 2627 hci_dev_unlock(hdev); 2628 } 2629 2630 static void hci_cs_read_remote_ext_features(struct hci_dev *hdev, __u8 status) 2631 { 2632 struct hci_cp_read_remote_ext_features *cp; 2633 struct hci_conn *conn; 2634 2635 bt_dev_dbg(hdev, "status 0x%2.2x", status); 2636 2637 if (!status) 2638 return; 2639 2640 cp = hci_sent_cmd_data(hdev, HCI_OP_READ_REMOTE_EXT_FEATURES); 2641 if (!cp) 2642 return; 2643 2644 hci_dev_lock(hdev); 2645 2646 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle)); 2647 if (conn) { 2648 if (conn->state == BT_CONFIG) { 2649 hci_connect_cfm(conn, status); 2650 hci_conn_drop(conn); 2651 } 2652 } 2653 2654 hci_dev_unlock(hdev); 2655 } 2656 2657 static void hci_setup_sync_conn_status(struct hci_dev *hdev, __u16 handle, 2658 __u8 status) 2659 { 2660 struct hci_conn *acl; 2661 struct hci_link *link; 2662 2663 bt_dev_dbg(hdev, "handle 0x%4.4x status 0x%2.2x", handle, status); 2664 2665 hci_dev_lock(hdev); 2666 2667 acl = hci_conn_hash_lookup_handle(hdev, handle); 2668 if (acl) { 2669 link = list_first_entry_or_null(&acl->link_list, 2670 struct hci_link, list); 2671 if (link && link->conn) { 2672 link->conn->state = BT_CLOSED; 2673 2674 hci_connect_cfm(link->conn, status); 2675 hci_conn_del(link->conn); 2676 } 2677 } 2678 2679 hci_dev_unlock(hdev); 2680 } 2681 2682 static void hci_cs_setup_sync_conn(struct hci_dev *hdev, __u8 status) 2683 { 2684 struct hci_cp_setup_sync_conn *cp; 2685 2686 bt_dev_dbg(hdev, "status 0x%2.2x", status); 2687 2688 if (!status) 2689 return; 2690 2691 cp = hci_sent_cmd_data(hdev, HCI_OP_SETUP_SYNC_CONN); 2692 if (!cp) 2693 return; 2694 2695 hci_setup_sync_conn_status(hdev, __le16_to_cpu(cp->handle), status); 2696 } 2697 2698 static void hci_cs_enhanced_setup_sync_conn(struct hci_dev *hdev, __u8 status) 2699 { 2700 struct hci_cp_enhanced_setup_sync_conn *cp; 2701 2702 bt_dev_dbg(hdev, "status 0x%2.2x", status); 2703 2704 if (!status) 2705 return; 2706 2707 cp = hci_sent_cmd_data(hdev, HCI_OP_ENHANCED_SETUP_SYNC_CONN); 2708 if (!cp) 2709 return; 2710 2711 hci_setup_sync_conn_status(hdev, __le16_to_cpu(cp->handle), status); 2712 } 2713 2714 static void hci_cs_sniff_mode(struct hci_dev *hdev, __u8 status) 2715 { 2716 struct hci_cp_sniff_mode *cp; 2717 struct hci_conn *conn; 2718 2719 bt_dev_dbg(hdev, "status 0x%2.2x", status); 2720 2721 if (!status) 2722 return; 2723 2724 cp = hci_sent_cmd_data(hdev, HCI_OP_SNIFF_MODE); 2725 if (!cp) 2726 return; 2727 2728 hci_dev_lock(hdev); 2729 2730 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle)); 2731 if (conn) { 2732 clear_bit(HCI_CONN_MODE_CHANGE_PEND, &conn->flags); 2733 2734 if (test_and_clear_bit(HCI_CONN_SCO_SETUP_PEND, &conn->flags)) 2735 hci_sco_setup(conn, status); 2736 } 2737 2738 hci_dev_unlock(hdev); 2739 } 2740 2741 static void hci_cs_exit_sniff_mode(struct hci_dev *hdev, __u8 status) 2742 { 2743 struct hci_cp_exit_sniff_mode *cp; 2744 struct hci_conn *conn; 2745 2746 bt_dev_dbg(hdev, "status 0x%2.2x", status); 2747 2748 if (!status) 2749 return; 2750 2751 cp = hci_sent_cmd_data(hdev, HCI_OP_EXIT_SNIFF_MODE); 2752 if (!cp) 2753 return; 2754 2755 hci_dev_lock(hdev); 2756 2757 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle)); 2758 if (conn) { 2759 clear_bit(HCI_CONN_MODE_CHANGE_PEND, &conn->flags); 2760 2761 if (test_and_clear_bit(HCI_CONN_SCO_SETUP_PEND, &conn->flags)) 2762 hci_sco_setup(conn, status); 2763 } 2764 2765 hci_dev_unlock(hdev); 2766 } 2767 2768 static void hci_cs_disconnect(struct hci_dev *hdev, u8 status) 2769 { 2770 struct hci_cp_disconnect *cp; 2771 struct hci_conn_params *params; 2772 struct hci_conn *conn; 2773 bool mgmt_conn; 2774 2775 bt_dev_dbg(hdev, "status 0x%2.2x", status); 2776 2777 /* Wait for HCI_EV_DISCONN_COMPLETE if status 0x00 and not suspended 2778 * otherwise cleanup the connection immediately. 2779 */ 2780 if (!status && !hdev->suspended) 2781 return; 2782 2783 cp = hci_sent_cmd_data(hdev, HCI_OP_DISCONNECT); 2784 if (!cp) 2785 return; 2786 2787 hci_dev_lock(hdev); 2788 2789 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle)); 2790 if (!conn) 2791 goto unlock; 2792 2793 if (status) { 2794 mgmt_disconnect_failed(hdev, &conn->dst, conn->type, 2795 conn->dst_type, status); 2796 2797 if (conn->type == LE_LINK && conn->role == HCI_ROLE_SLAVE) { 2798 hdev->cur_adv_instance = conn->adv_instance; 2799 hci_enable_advertising(hdev); 2800 } 2801 2802 /* Inform sockets conn is gone before we delete it */ 2803 hci_disconn_cfm(conn, HCI_ERROR_UNSPECIFIED); 2804 2805 goto done; 2806 } 2807 2808 mgmt_conn = test_and_clear_bit(HCI_CONN_MGMT_CONNECTED, &conn->flags); 2809 2810 if (conn->type == ACL_LINK) { 2811 if (test_and_clear_bit(HCI_CONN_FLUSH_KEY, &conn->flags)) 2812 hci_remove_link_key(hdev, &conn->dst); 2813 } 2814 2815 params = hci_conn_params_lookup(hdev, &conn->dst, conn->dst_type); 2816 if (params) { 2817 switch (params->auto_connect) { 2818 case HCI_AUTO_CONN_LINK_LOSS: 2819 if (cp->reason != HCI_ERROR_CONNECTION_TIMEOUT) 2820 break; 2821 fallthrough; 2822 2823 case HCI_AUTO_CONN_DIRECT: 2824 case HCI_AUTO_CONN_ALWAYS: 2825 hci_pend_le_list_del_init(params); 2826 hci_pend_le_list_add(params, &hdev->pend_le_conns); 2827 break; 2828 2829 default: 2830 break; 2831 } 2832 } 2833 2834 mgmt_device_disconnected(hdev, &conn->dst, conn->type, conn->dst_type, 2835 cp->reason, mgmt_conn); 2836 2837 hci_disconn_cfm(conn, cp->reason); 2838 2839 done: 2840 /* If the disconnection failed for any reason, the upper layer 2841 * does not retry to disconnect in current implementation. 2842 * Hence, we need to do some basic cleanup here and re-enable 2843 * advertising if necessary. 2844 */ 2845 hci_conn_del(conn); 2846 unlock: 2847 hci_dev_unlock(hdev); 2848 } 2849 2850 static u8 ev_bdaddr_type(struct hci_dev *hdev, u8 type, bool *resolved) 2851 { 2852 /* When using controller based address resolution, then the new 2853 * address types 0x02 and 0x03 are used. These types need to be 2854 * converted back into either public address or random address type 2855 */ 2856 switch (type) { 2857 case ADDR_LE_DEV_PUBLIC_RESOLVED: 2858 if (resolved) 2859 *resolved = true; 2860 return ADDR_LE_DEV_PUBLIC; 2861 case ADDR_LE_DEV_RANDOM_RESOLVED: 2862 if (resolved) 2863 *resolved = true; 2864 return ADDR_LE_DEV_RANDOM; 2865 } 2866 2867 if (resolved) 2868 *resolved = false; 2869 return type; 2870 } 2871 2872 static void cs_le_create_conn(struct hci_dev *hdev, bdaddr_t *peer_addr, 2873 u8 peer_addr_type, u8 own_address_type, 2874 u8 filter_policy) 2875 { 2876 struct hci_conn *conn; 2877 2878 conn = hci_conn_hash_lookup_le(hdev, peer_addr, 2879 peer_addr_type); 2880 if (!conn) 2881 return; 2882 2883 own_address_type = ev_bdaddr_type(hdev, own_address_type, NULL); 2884 2885 /* Store the initiator and responder address information which 2886 * is needed for SMP. These values will not change during the 2887 * lifetime of the connection. 2888 */ 2889 conn->init_addr_type = own_address_type; 2890 if (own_address_type == ADDR_LE_DEV_RANDOM) 2891 bacpy(&conn->init_addr, &hdev->random_addr); 2892 else 2893 bacpy(&conn->init_addr, &hdev->bdaddr); 2894 2895 conn->resp_addr_type = peer_addr_type; 2896 bacpy(&conn->resp_addr, peer_addr); 2897 } 2898 2899 static void hci_cs_le_create_conn(struct hci_dev *hdev, u8 status) 2900 { 2901 struct hci_cp_le_create_conn *cp; 2902 2903 bt_dev_dbg(hdev, "status 0x%2.2x", status); 2904 2905 /* All connection failure handling is taken care of by the 2906 * hci_conn_failed function which is triggered by the HCI 2907 * request completion callbacks used for connecting. 2908 */ 2909 if (status) 2910 return; 2911 2912 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_CREATE_CONN); 2913 if (!cp) 2914 return; 2915 2916 hci_dev_lock(hdev); 2917 2918 cs_le_create_conn(hdev, &cp->peer_addr, cp->peer_addr_type, 2919 cp->own_address_type, cp->filter_policy); 2920 2921 hci_dev_unlock(hdev); 2922 } 2923 2924 static void hci_cs_le_ext_create_conn(struct hci_dev *hdev, u8 status) 2925 { 2926 struct hci_cp_le_ext_create_conn *cp; 2927 2928 bt_dev_dbg(hdev, "status 0x%2.2x", status); 2929 2930 /* All connection failure handling is taken care of by the 2931 * hci_conn_failed function which is triggered by the HCI 2932 * request completion callbacks used for connecting. 2933 */ 2934 if (status) 2935 return; 2936 2937 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_EXT_CREATE_CONN); 2938 if (!cp) 2939 return; 2940 2941 hci_dev_lock(hdev); 2942 2943 cs_le_create_conn(hdev, &cp->peer_addr, cp->peer_addr_type, 2944 cp->own_addr_type, cp->filter_policy); 2945 2946 hci_dev_unlock(hdev); 2947 } 2948 2949 static void hci_cs_le_read_remote_features(struct hci_dev *hdev, u8 status) 2950 { 2951 struct hci_cp_le_read_remote_features *cp; 2952 struct hci_conn *conn; 2953 2954 bt_dev_dbg(hdev, "status 0x%2.2x", status); 2955 2956 if (!status) 2957 return; 2958 2959 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_READ_REMOTE_FEATURES); 2960 if (!cp) 2961 return; 2962 2963 hci_dev_lock(hdev); 2964 2965 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle)); 2966 if (conn) { 2967 if (conn->state == BT_CONFIG) { 2968 hci_connect_cfm(conn, status); 2969 hci_conn_drop(conn); 2970 } 2971 } 2972 2973 hci_dev_unlock(hdev); 2974 } 2975 2976 static void hci_cs_le_start_enc(struct hci_dev *hdev, u8 status) 2977 { 2978 struct hci_cp_le_start_enc *cp; 2979 struct hci_conn *conn; 2980 2981 bt_dev_dbg(hdev, "status 0x%2.2x", status); 2982 2983 if (!status) 2984 return; 2985 2986 hci_dev_lock(hdev); 2987 2988 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_START_ENC); 2989 if (!cp) 2990 goto unlock; 2991 2992 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle)); 2993 if (!conn) 2994 goto unlock; 2995 2996 if (conn->state != BT_CONNECTED) 2997 goto unlock; 2998 2999 hci_disconnect(conn, HCI_ERROR_AUTH_FAILURE); 3000 hci_conn_drop(conn); 3001 3002 unlock: 3003 hci_dev_unlock(hdev); 3004 } 3005 3006 static void hci_cs_switch_role(struct hci_dev *hdev, u8 status) 3007 { 3008 struct hci_cp_switch_role *cp; 3009 struct hci_conn *conn; 3010 3011 BT_DBG("%s status 0x%2.2x", hdev->name, status); 3012 3013 if (!status) 3014 return; 3015 3016 cp = hci_sent_cmd_data(hdev, HCI_OP_SWITCH_ROLE); 3017 if (!cp) 3018 return; 3019 3020 hci_dev_lock(hdev); 3021 3022 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &cp->bdaddr); 3023 if (conn) 3024 clear_bit(HCI_CONN_RSWITCH_PEND, &conn->flags); 3025 3026 hci_dev_unlock(hdev); 3027 } 3028 3029 static void hci_inquiry_complete_evt(struct hci_dev *hdev, void *data, 3030 struct sk_buff *skb) 3031 { 3032 struct hci_ev_status *ev = data; 3033 struct discovery_state *discov = &hdev->discovery; 3034 struct inquiry_entry *e; 3035 3036 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 3037 3038 hci_conn_check_pending(hdev); 3039 3040 if (!test_and_clear_bit(HCI_INQUIRY, &hdev->flags)) 3041 return; 3042 3043 smp_mb__after_atomic(); /* wake_up_bit advises about this barrier */ 3044 wake_up_bit(&hdev->flags, HCI_INQUIRY); 3045 3046 if (!hci_dev_test_flag(hdev, HCI_MGMT)) 3047 return; 3048 3049 hci_dev_lock(hdev); 3050 3051 if (discov->state != DISCOVERY_FINDING) 3052 goto unlock; 3053 3054 if (list_empty(&discov->resolve)) { 3055 /* When BR/EDR inquiry is active and no LE scanning is in 3056 * progress, then change discovery state to indicate completion. 3057 * 3058 * When running LE scanning and BR/EDR inquiry simultaneously 3059 * and the LE scan already finished, then change the discovery 3060 * state to indicate completion. 3061 */ 3062 if (!hci_dev_test_flag(hdev, HCI_LE_SCAN) || 3063 !test_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks)) 3064 hci_discovery_set_state(hdev, DISCOVERY_STOPPED); 3065 goto unlock; 3066 } 3067 3068 e = hci_inquiry_cache_lookup_resolve(hdev, BDADDR_ANY, NAME_NEEDED); 3069 if (e && hci_resolve_name(hdev, e) == 0) { 3070 e->name_state = NAME_PENDING; 3071 hci_discovery_set_state(hdev, DISCOVERY_RESOLVING); 3072 discov->name_resolve_timeout = jiffies + NAME_RESOLVE_DURATION; 3073 } else { 3074 /* When BR/EDR inquiry is active and no LE scanning is in 3075 * progress, then change discovery state to indicate completion. 3076 * 3077 * When running LE scanning and BR/EDR inquiry simultaneously 3078 * and the LE scan already finished, then change the discovery 3079 * state to indicate completion. 3080 */ 3081 if (!hci_dev_test_flag(hdev, HCI_LE_SCAN) || 3082 !test_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks)) 3083 hci_discovery_set_state(hdev, DISCOVERY_STOPPED); 3084 } 3085 3086 unlock: 3087 hci_dev_unlock(hdev); 3088 } 3089 3090 static void hci_inquiry_result_evt(struct hci_dev *hdev, void *edata, 3091 struct sk_buff *skb) 3092 { 3093 struct hci_ev_inquiry_result *ev = edata; 3094 struct inquiry_data data; 3095 int i; 3096 3097 if (!hci_ev_skb_pull(hdev, skb, HCI_EV_INQUIRY_RESULT, 3098 flex_array_size(ev, info, ev->num))) 3099 return; 3100 3101 bt_dev_dbg(hdev, "num %d", ev->num); 3102 3103 if (!ev->num) 3104 return; 3105 3106 if (hci_dev_test_flag(hdev, HCI_PERIODIC_INQ)) 3107 return; 3108 3109 hci_dev_lock(hdev); 3110 3111 for (i = 0; i < ev->num; i++) { 3112 struct inquiry_info *info = &ev->info[i]; 3113 u32 flags; 3114 3115 bacpy(&data.bdaddr, &info->bdaddr); 3116 data.pscan_rep_mode = info->pscan_rep_mode; 3117 data.pscan_period_mode = info->pscan_period_mode; 3118 data.pscan_mode = info->pscan_mode; 3119 memcpy(data.dev_class, info->dev_class, 3); 3120 data.clock_offset = info->clock_offset; 3121 data.rssi = HCI_RSSI_INVALID; 3122 data.ssp_mode = 0x00; 3123 3124 flags = hci_inquiry_cache_update(hdev, &data, false); 3125 3126 mgmt_device_found(hdev, &info->bdaddr, ACL_LINK, 0x00, 3127 info->dev_class, HCI_RSSI_INVALID, 3128 flags, NULL, 0, NULL, 0, 0); 3129 } 3130 3131 hci_dev_unlock(hdev); 3132 } 3133 3134 static void hci_conn_complete_evt(struct hci_dev *hdev, void *data, 3135 struct sk_buff *skb) 3136 { 3137 struct hci_ev_conn_complete *ev = data; 3138 struct hci_conn *conn; 3139 u8 status = ev->status; 3140 3141 bt_dev_dbg(hdev, "status 0x%2.2x", status); 3142 3143 hci_dev_lock(hdev); 3144 3145 conn = hci_conn_hash_lookup_ba(hdev, ev->link_type, &ev->bdaddr); 3146 if (!conn) { 3147 /* In case of error status and there is no connection pending 3148 * just unlock as there is nothing to cleanup. 3149 */ 3150 if (ev->status) 3151 goto unlock; 3152 3153 /* Connection may not exist if auto-connected. Check the bredr 3154 * allowlist to see if this device is allowed to auto connect. 3155 * If link is an ACL type, create a connection class 3156 * automatically. 3157 * 3158 * Auto-connect will only occur if the event filter is 3159 * programmed with a given address. Right now, event filter is 3160 * only used during suspend. 3161 */ 3162 if (ev->link_type == ACL_LINK && 3163 hci_bdaddr_list_lookup_with_flags(&hdev->accept_list, 3164 &ev->bdaddr, 3165 BDADDR_BREDR)) { 3166 conn = hci_conn_add_unset(hdev, ev->link_type, 3167 &ev->bdaddr, HCI_ROLE_SLAVE); 3168 if (!conn) { 3169 bt_dev_err(hdev, "no memory for new conn"); 3170 goto unlock; 3171 } 3172 } else { 3173 if (ev->link_type != SCO_LINK) 3174 goto unlock; 3175 3176 conn = hci_conn_hash_lookup_ba(hdev, ESCO_LINK, 3177 &ev->bdaddr); 3178 if (!conn) 3179 goto unlock; 3180 3181 conn->type = SCO_LINK; 3182 } 3183 } 3184 3185 /* The HCI_Connection_Complete event is only sent once per connection. 3186 * Processing it more than once per connection can corrupt kernel memory. 3187 * 3188 * As the connection handle is set here for the first time, it indicates 3189 * whether the connection is already set up. 3190 */ 3191 if (!HCI_CONN_HANDLE_UNSET(conn->handle)) { 3192 bt_dev_err(hdev, "Ignoring HCI_Connection_Complete for existing connection"); 3193 goto unlock; 3194 } 3195 3196 if (!status) { 3197 status = hci_conn_set_handle(conn, __le16_to_cpu(ev->handle)); 3198 if (status) 3199 goto done; 3200 3201 if (conn->type == ACL_LINK) { 3202 conn->state = BT_CONFIG; 3203 hci_conn_hold(conn); 3204 3205 if (!conn->out && !hci_conn_ssp_enabled(conn) && 3206 !hci_find_link_key(hdev, &ev->bdaddr)) 3207 conn->disc_timeout = HCI_PAIRING_TIMEOUT; 3208 else 3209 conn->disc_timeout = HCI_DISCONN_TIMEOUT; 3210 } else 3211 conn->state = BT_CONNECTED; 3212 3213 hci_debugfs_create_conn(conn); 3214 hci_conn_add_sysfs(conn); 3215 3216 if (test_bit(HCI_AUTH, &hdev->flags)) 3217 set_bit(HCI_CONN_AUTH, &conn->flags); 3218 3219 if (test_bit(HCI_ENCRYPT, &hdev->flags)) 3220 set_bit(HCI_CONN_ENCRYPT, &conn->flags); 3221 3222 /* "Link key request" completed ahead of "connect request" completes */ 3223 if (ev->encr_mode == 1 && !test_bit(HCI_CONN_ENCRYPT, &conn->flags) && 3224 ev->link_type == ACL_LINK) { 3225 struct link_key *key; 3226 struct hci_cp_read_enc_key_size cp; 3227 3228 key = hci_find_link_key(hdev, &ev->bdaddr); 3229 if (key) { 3230 set_bit(HCI_CONN_ENCRYPT, &conn->flags); 3231 3232 if (!read_key_size_capable(hdev)) { 3233 conn->enc_key_size = HCI_LINK_KEY_SIZE; 3234 } else { 3235 cp.handle = cpu_to_le16(conn->handle); 3236 if (hci_send_cmd(hdev, HCI_OP_READ_ENC_KEY_SIZE, 3237 sizeof(cp), &cp)) { 3238 bt_dev_err(hdev, "sending read key size failed"); 3239 conn->enc_key_size = HCI_LINK_KEY_SIZE; 3240 } 3241 } 3242 3243 hci_encrypt_cfm(conn, ev->status); 3244 } 3245 } 3246 3247 /* Get remote features */ 3248 if (conn->type == ACL_LINK) { 3249 struct hci_cp_read_remote_features cp; 3250 cp.handle = ev->handle; 3251 hci_send_cmd(hdev, HCI_OP_READ_REMOTE_FEATURES, 3252 sizeof(cp), &cp); 3253 3254 hci_update_scan(hdev); 3255 } 3256 3257 /* Set packet type for incoming connection */ 3258 if (!conn->out && hdev->hci_ver < BLUETOOTH_VER_2_0) { 3259 struct hci_cp_change_conn_ptype cp; 3260 cp.handle = ev->handle; 3261 cp.pkt_type = cpu_to_le16(conn->pkt_type); 3262 hci_send_cmd(hdev, HCI_OP_CHANGE_CONN_PTYPE, sizeof(cp), 3263 &cp); 3264 } 3265 } 3266 3267 if (conn->type == ACL_LINK) 3268 hci_sco_setup(conn, ev->status); 3269 3270 done: 3271 if (status) { 3272 hci_conn_failed(conn, status); 3273 } else if (ev->link_type == SCO_LINK) { 3274 switch (conn->setting & SCO_AIRMODE_MASK) { 3275 case SCO_AIRMODE_CVSD: 3276 if (hdev->notify) 3277 hdev->notify(hdev, HCI_NOTIFY_ENABLE_SCO_CVSD); 3278 break; 3279 } 3280 3281 hci_connect_cfm(conn, status); 3282 } 3283 3284 unlock: 3285 hci_dev_unlock(hdev); 3286 3287 hci_conn_check_pending(hdev); 3288 } 3289 3290 static void hci_reject_conn(struct hci_dev *hdev, bdaddr_t *bdaddr) 3291 { 3292 struct hci_cp_reject_conn_req cp; 3293 3294 bacpy(&cp.bdaddr, bdaddr); 3295 cp.reason = HCI_ERROR_REJ_BAD_ADDR; 3296 hci_send_cmd(hdev, HCI_OP_REJECT_CONN_REQ, sizeof(cp), &cp); 3297 } 3298 3299 static void hci_conn_request_evt(struct hci_dev *hdev, void *data, 3300 struct sk_buff *skb) 3301 { 3302 struct hci_ev_conn_request *ev = data; 3303 int mask = hdev->link_mode; 3304 struct inquiry_entry *ie; 3305 struct hci_conn *conn; 3306 __u8 flags = 0; 3307 3308 bt_dev_dbg(hdev, "bdaddr %pMR type 0x%x", &ev->bdaddr, ev->link_type); 3309 3310 /* Reject incoming connection from device with same BD ADDR against 3311 * CVE-2020-26555 3312 */ 3313 if (hdev && !bacmp(&hdev->bdaddr, &ev->bdaddr)) { 3314 bt_dev_dbg(hdev, "Reject connection with same BD_ADDR %pMR\n", 3315 &ev->bdaddr); 3316 hci_reject_conn(hdev, &ev->bdaddr); 3317 return; 3318 } 3319 3320 mask |= hci_proto_connect_ind(hdev, &ev->bdaddr, ev->link_type, 3321 &flags); 3322 3323 if (!(mask & HCI_LM_ACCEPT)) { 3324 hci_reject_conn(hdev, &ev->bdaddr); 3325 return; 3326 } 3327 3328 hci_dev_lock(hdev); 3329 3330 if (hci_bdaddr_list_lookup(&hdev->reject_list, &ev->bdaddr, 3331 BDADDR_BREDR)) { 3332 hci_reject_conn(hdev, &ev->bdaddr); 3333 goto unlock; 3334 } 3335 3336 /* Require HCI_CONNECTABLE or an accept list entry to accept the 3337 * connection. These features are only touched through mgmt so 3338 * only do the checks if HCI_MGMT is set. 3339 */ 3340 if (hci_dev_test_flag(hdev, HCI_MGMT) && 3341 !hci_dev_test_flag(hdev, HCI_CONNECTABLE) && 3342 !hci_bdaddr_list_lookup_with_flags(&hdev->accept_list, &ev->bdaddr, 3343 BDADDR_BREDR)) { 3344 hci_reject_conn(hdev, &ev->bdaddr); 3345 goto unlock; 3346 } 3347 3348 /* Connection accepted */ 3349 3350 ie = hci_inquiry_cache_lookup(hdev, &ev->bdaddr); 3351 if (ie) 3352 memcpy(ie->data.dev_class, ev->dev_class, 3); 3353 3354 conn = hci_conn_hash_lookup_ba(hdev, ev->link_type, 3355 &ev->bdaddr); 3356 if (!conn) { 3357 conn = hci_conn_add_unset(hdev, ev->link_type, &ev->bdaddr, 3358 HCI_ROLE_SLAVE); 3359 if (!conn) { 3360 bt_dev_err(hdev, "no memory for new connection"); 3361 goto unlock; 3362 } 3363 } 3364 3365 memcpy(conn->dev_class, ev->dev_class, 3); 3366 3367 hci_dev_unlock(hdev); 3368 3369 if (ev->link_type == ACL_LINK || 3370 (!(flags & HCI_PROTO_DEFER) && !lmp_esco_capable(hdev))) { 3371 struct hci_cp_accept_conn_req cp; 3372 conn->state = BT_CONNECT; 3373 3374 bacpy(&cp.bdaddr, &ev->bdaddr); 3375 3376 if (lmp_rswitch_capable(hdev) && (mask & HCI_LM_MASTER)) 3377 cp.role = 0x00; /* Become central */ 3378 else 3379 cp.role = 0x01; /* Remain peripheral */ 3380 3381 hci_send_cmd(hdev, HCI_OP_ACCEPT_CONN_REQ, sizeof(cp), &cp); 3382 } else if (!(flags & HCI_PROTO_DEFER)) { 3383 struct hci_cp_accept_sync_conn_req cp; 3384 conn->state = BT_CONNECT; 3385 3386 bacpy(&cp.bdaddr, &ev->bdaddr); 3387 cp.pkt_type = cpu_to_le16(conn->pkt_type); 3388 3389 cp.tx_bandwidth = cpu_to_le32(0x00001f40); 3390 cp.rx_bandwidth = cpu_to_le32(0x00001f40); 3391 cp.max_latency = cpu_to_le16(0xffff); 3392 cp.content_format = cpu_to_le16(hdev->voice_setting); 3393 cp.retrans_effort = 0xff; 3394 3395 hci_send_cmd(hdev, HCI_OP_ACCEPT_SYNC_CONN_REQ, sizeof(cp), 3396 &cp); 3397 } else { 3398 conn->state = BT_CONNECT2; 3399 hci_connect_cfm(conn, 0); 3400 } 3401 3402 return; 3403 unlock: 3404 hci_dev_unlock(hdev); 3405 } 3406 3407 static u8 hci_to_mgmt_reason(u8 err) 3408 { 3409 switch (err) { 3410 case HCI_ERROR_CONNECTION_TIMEOUT: 3411 return MGMT_DEV_DISCONN_TIMEOUT; 3412 case HCI_ERROR_REMOTE_USER_TERM: 3413 case HCI_ERROR_REMOTE_LOW_RESOURCES: 3414 case HCI_ERROR_REMOTE_POWER_OFF: 3415 return MGMT_DEV_DISCONN_REMOTE; 3416 case HCI_ERROR_LOCAL_HOST_TERM: 3417 return MGMT_DEV_DISCONN_LOCAL_HOST; 3418 default: 3419 return MGMT_DEV_DISCONN_UNKNOWN; 3420 } 3421 } 3422 3423 static void hci_disconn_complete_evt(struct hci_dev *hdev, void *data, 3424 struct sk_buff *skb) 3425 { 3426 struct hci_ev_disconn_complete *ev = data; 3427 u8 reason; 3428 struct hci_conn_params *params; 3429 struct hci_conn *conn; 3430 bool mgmt_connected; 3431 3432 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 3433 3434 hci_dev_lock(hdev); 3435 3436 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle)); 3437 if (!conn) 3438 goto unlock; 3439 3440 if (ev->status) { 3441 mgmt_disconnect_failed(hdev, &conn->dst, conn->type, 3442 conn->dst_type, ev->status); 3443 goto unlock; 3444 } 3445 3446 conn->state = BT_CLOSED; 3447 3448 mgmt_connected = test_and_clear_bit(HCI_CONN_MGMT_CONNECTED, &conn->flags); 3449 3450 if (test_bit(HCI_CONN_AUTH_FAILURE, &conn->flags)) 3451 reason = MGMT_DEV_DISCONN_AUTH_FAILURE; 3452 else 3453 reason = hci_to_mgmt_reason(ev->reason); 3454 3455 mgmt_device_disconnected(hdev, &conn->dst, conn->type, conn->dst_type, 3456 reason, mgmt_connected); 3457 3458 if (conn->type == ACL_LINK) { 3459 if (test_and_clear_bit(HCI_CONN_FLUSH_KEY, &conn->flags)) 3460 hci_remove_link_key(hdev, &conn->dst); 3461 3462 hci_update_scan(hdev); 3463 } 3464 3465 params = hci_conn_params_lookup(hdev, &conn->dst, conn->dst_type); 3466 if (params) { 3467 switch (params->auto_connect) { 3468 case HCI_AUTO_CONN_LINK_LOSS: 3469 if (ev->reason != HCI_ERROR_CONNECTION_TIMEOUT) 3470 break; 3471 fallthrough; 3472 3473 case HCI_AUTO_CONN_DIRECT: 3474 case HCI_AUTO_CONN_ALWAYS: 3475 hci_pend_le_list_del_init(params); 3476 hci_pend_le_list_add(params, &hdev->pend_le_conns); 3477 hci_update_passive_scan(hdev); 3478 break; 3479 3480 default: 3481 break; 3482 } 3483 } 3484 3485 hci_disconn_cfm(conn, ev->reason); 3486 3487 /* Re-enable advertising if necessary, since it might 3488 * have been disabled by the connection. From the 3489 * HCI_LE_Set_Advertise_Enable command description in 3490 * the core specification (v4.0): 3491 * "The Controller shall continue advertising until the Host 3492 * issues an LE_Set_Advertise_Enable command with 3493 * Advertising_Enable set to 0x00 (Advertising is disabled) 3494 * or until a connection is created or until the Advertising 3495 * is timed out due to Directed Advertising." 3496 */ 3497 if (conn->type == LE_LINK && conn->role == HCI_ROLE_SLAVE) { 3498 hdev->cur_adv_instance = conn->adv_instance; 3499 hci_enable_advertising(hdev); 3500 } 3501 3502 hci_conn_del(conn); 3503 3504 unlock: 3505 hci_dev_unlock(hdev); 3506 } 3507 3508 static void hci_auth_complete_evt(struct hci_dev *hdev, void *data, 3509 struct sk_buff *skb) 3510 { 3511 struct hci_ev_auth_complete *ev = data; 3512 struct hci_conn *conn; 3513 3514 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 3515 3516 hci_dev_lock(hdev); 3517 3518 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle)); 3519 if (!conn) 3520 goto unlock; 3521 3522 if (!ev->status) { 3523 clear_bit(HCI_CONN_AUTH_FAILURE, &conn->flags); 3524 set_bit(HCI_CONN_AUTH, &conn->flags); 3525 conn->sec_level = conn->pending_sec_level; 3526 } else { 3527 if (ev->status == HCI_ERROR_PIN_OR_KEY_MISSING) 3528 set_bit(HCI_CONN_AUTH_FAILURE, &conn->flags); 3529 3530 mgmt_auth_failed(conn, ev->status); 3531 } 3532 3533 clear_bit(HCI_CONN_AUTH_PEND, &conn->flags); 3534 3535 if (conn->state == BT_CONFIG) { 3536 if (!ev->status && hci_conn_ssp_enabled(conn)) { 3537 struct hci_cp_set_conn_encrypt cp; 3538 cp.handle = ev->handle; 3539 cp.encrypt = 0x01; 3540 hci_send_cmd(hdev, HCI_OP_SET_CONN_ENCRYPT, sizeof(cp), 3541 &cp); 3542 } else { 3543 conn->state = BT_CONNECTED; 3544 hci_connect_cfm(conn, ev->status); 3545 hci_conn_drop(conn); 3546 } 3547 } else { 3548 hci_auth_cfm(conn, ev->status); 3549 3550 hci_conn_hold(conn); 3551 conn->disc_timeout = HCI_DISCONN_TIMEOUT; 3552 hci_conn_drop(conn); 3553 } 3554 3555 if (test_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags)) { 3556 if (!ev->status) { 3557 struct hci_cp_set_conn_encrypt cp; 3558 cp.handle = ev->handle; 3559 cp.encrypt = 0x01; 3560 hci_send_cmd(hdev, HCI_OP_SET_CONN_ENCRYPT, sizeof(cp), 3561 &cp); 3562 } else { 3563 clear_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags); 3564 hci_encrypt_cfm(conn, ev->status); 3565 } 3566 } 3567 3568 unlock: 3569 hci_dev_unlock(hdev); 3570 } 3571 3572 static void hci_remote_name_evt(struct hci_dev *hdev, void *data, 3573 struct sk_buff *skb) 3574 { 3575 struct hci_ev_remote_name *ev = data; 3576 struct hci_conn *conn; 3577 3578 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 3579 3580 hci_dev_lock(hdev); 3581 3582 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr); 3583 3584 if (!hci_dev_test_flag(hdev, HCI_MGMT)) 3585 goto check_auth; 3586 3587 if (ev->status == 0) 3588 hci_check_pending_name(hdev, conn, &ev->bdaddr, ev->name, 3589 strnlen(ev->name, HCI_MAX_NAME_LENGTH)); 3590 else 3591 hci_check_pending_name(hdev, conn, &ev->bdaddr, NULL, 0); 3592 3593 check_auth: 3594 if (!conn) 3595 goto unlock; 3596 3597 if (!hci_outgoing_auth_needed(hdev, conn)) 3598 goto unlock; 3599 3600 if (!test_and_set_bit(HCI_CONN_AUTH_PEND, &conn->flags)) { 3601 struct hci_cp_auth_requested cp; 3602 3603 set_bit(HCI_CONN_AUTH_INITIATOR, &conn->flags); 3604 3605 cp.handle = __cpu_to_le16(conn->handle); 3606 hci_send_cmd(hdev, HCI_OP_AUTH_REQUESTED, sizeof(cp), &cp); 3607 } 3608 3609 unlock: 3610 hci_dev_unlock(hdev); 3611 } 3612 3613 static void hci_encrypt_change_evt(struct hci_dev *hdev, void *data, 3614 struct sk_buff *skb) 3615 { 3616 struct hci_ev_encrypt_change *ev = data; 3617 struct hci_conn *conn; 3618 3619 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 3620 3621 hci_dev_lock(hdev); 3622 3623 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle)); 3624 if (!conn) 3625 goto unlock; 3626 3627 if (!ev->status) { 3628 if (ev->encrypt) { 3629 /* Encryption implies authentication */ 3630 set_bit(HCI_CONN_AUTH, &conn->flags); 3631 set_bit(HCI_CONN_ENCRYPT, &conn->flags); 3632 conn->sec_level = conn->pending_sec_level; 3633 3634 /* P-256 authentication key implies FIPS */ 3635 if (conn->key_type == HCI_LK_AUTH_COMBINATION_P256) 3636 set_bit(HCI_CONN_FIPS, &conn->flags); 3637 3638 if ((conn->type == ACL_LINK && ev->encrypt == 0x02) || 3639 conn->type == LE_LINK) 3640 set_bit(HCI_CONN_AES_CCM, &conn->flags); 3641 } else { 3642 clear_bit(HCI_CONN_ENCRYPT, &conn->flags); 3643 clear_bit(HCI_CONN_AES_CCM, &conn->flags); 3644 } 3645 } 3646 3647 /* We should disregard the current RPA and generate a new one 3648 * whenever the encryption procedure fails. 3649 */ 3650 if (ev->status && conn->type == LE_LINK) { 3651 hci_dev_set_flag(hdev, HCI_RPA_EXPIRED); 3652 hci_adv_instances_set_rpa_expired(hdev, true); 3653 } 3654 3655 clear_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags); 3656 3657 /* Check link security requirements are met */ 3658 if (!hci_conn_check_link_mode(conn)) 3659 ev->status = HCI_ERROR_AUTH_FAILURE; 3660 3661 if (ev->status && conn->state == BT_CONNECTED) { 3662 if (ev->status == HCI_ERROR_PIN_OR_KEY_MISSING) 3663 set_bit(HCI_CONN_AUTH_FAILURE, &conn->flags); 3664 3665 /* Notify upper layers so they can cleanup before 3666 * disconnecting. 3667 */ 3668 hci_encrypt_cfm(conn, ev->status); 3669 hci_disconnect(conn, HCI_ERROR_AUTH_FAILURE); 3670 hci_conn_drop(conn); 3671 goto unlock; 3672 } 3673 3674 /* Try reading the encryption key size for encrypted ACL links */ 3675 if (!ev->status && ev->encrypt && conn->type == ACL_LINK) { 3676 struct hci_cp_read_enc_key_size cp; 3677 3678 /* Only send HCI_Read_Encryption_Key_Size if the 3679 * controller really supports it. If it doesn't, assume 3680 * the default size (16). 3681 */ 3682 if (!read_key_size_capable(hdev)) { 3683 conn->enc_key_size = HCI_LINK_KEY_SIZE; 3684 goto notify; 3685 } 3686 3687 cp.handle = cpu_to_le16(conn->handle); 3688 if (hci_send_cmd(hdev, HCI_OP_READ_ENC_KEY_SIZE, 3689 sizeof(cp), &cp)) { 3690 bt_dev_err(hdev, "sending read key size failed"); 3691 conn->enc_key_size = HCI_LINK_KEY_SIZE; 3692 goto notify; 3693 } 3694 3695 goto unlock; 3696 } 3697 3698 /* Set the default Authenticated Payload Timeout after 3699 * an LE Link is established. As per Core Spec v5.0, Vol 2, Part B 3700 * Section 3.3, the HCI command WRITE_AUTH_PAYLOAD_TIMEOUT should be 3701 * sent when the link is active and Encryption is enabled, the conn 3702 * type can be either LE or ACL and controller must support LMP Ping. 3703 * Ensure for AES-CCM encryption as well. 3704 */ 3705 if (test_bit(HCI_CONN_ENCRYPT, &conn->flags) && 3706 test_bit(HCI_CONN_AES_CCM, &conn->flags) && 3707 ((conn->type == ACL_LINK && lmp_ping_capable(hdev)) || 3708 (conn->type == LE_LINK && (hdev->le_features[0] & HCI_LE_PING)))) { 3709 struct hci_cp_write_auth_payload_to cp; 3710 3711 cp.handle = cpu_to_le16(conn->handle); 3712 cp.timeout = cpu_to_le16(hdev->auth_payload_timeout); 3713 if (hci_send_cmd(conn->hdev, HCI_OP_WRITE_AUTH_PAYLOAD_TO, 3714 sizeof(cp), &cp)) 3715 bt_dev_err(hdev, "write auth payload timeout failed"); 3716 } 3717 3718 notify: 3719 hci_encrypt_cfm(conn, ev->status); 3720 3721 unlock: 3722 hci_dev_unlock(hdev); 3723 } 3724 3725 static void hci_change_link_key_complete_evt(struct hci_dev *hdev, void *data, 3726 struct sk_buff *skb) 3727 { 3728 struct hci_ev_change_link_key_complete *ev = data; 3729 struct hci_conn *conn; 3730 3731 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 3732 3733 hci_dev_lock(hdev); 3734 3735 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle)); 3736 if (conn) { 3737 if (!ev->status) 3738 set_bit(HCI_CONN_SECURE, &conn->flags); 3739 3740 clear_bit(HCI_CONN_AUTH_PEND, &conn->flags); 3741 3742 hci_key_change_cfm(conn, ev->status); 3743 } 3744 3745 hci_dev_unlock(hdev); 3746 } 3747 3748 static void hci_remote_features_evt(struct hci_dev *hdev, void *data, 3749 struct sk_buff *skb) 3750 { 3751 struct hci_ev_remote_features *ev = data; 3752 struct hci_conn *conn; 3753 3754 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 3755 3756 hci_dev_lock(hdev); 3757 3758 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle)); 3759 if (!conn) 3760 goto unlock; 3761 3762 if (!ev->status) 3763 memcpy(conn->features[0], ev->features, 8); 3764 3765 if (conn->state != BT_CONFIG) 3766 goto unlock; 3767 3768 if (!ev->status && lmp_ext_feat_capable(hdev) && 3769 lmp_ext_feat_capable(conn)) { 3770 struct hci_cp_read_remote_ext_features cp; 3771 cp.handle = ev->handle; 3772 cp.page = 0x01; 3773 hci_send_cmd(hdev, HCI_OP_READ_REMOTE_EXT_FEATURES, 3774 sizeof(cp), &cp); 3775 goto unlock; 3776 } 3777 3778 if (!ev->status && !test_bit(HCI_CONN_MGMT_CONNECTED, &conn->flags)) { 3779 struct hci_cp_remote_name_req cp; 3780 memset(&cp, 0, sizeof(cp)); 3781 bacpy(&cp.bdaddr, &conn->dst); 3782 cp.pscan_rep_mode = 0x02; 3783 hci_send_cmd(hdev, HCI_OP_REMOTE_NAME_REQ, sizeof(cp), &cp); 3784 } else { 3785 mgmt_device_connected(hdev, conn, NULL, 0); 3786 } 3787 3788 if (!hci_outgoing_auth_needed(hdev, conn)) { 3789 conn->state = BT_CONNECTED; 3790 hci_connect_cfm(conn, ev->status); 3791 hci_conn_drop(conn); 3792 } 3793 3794 unlock: 3795 hci_dev_unlock(hdev); 3796 } 3797 3798 static inline void handle_cmd_cnt_and_timer(struct hci_dev *hdev, u8 ncmd) 3799 { 3800 cancel_delayed_work(&hdev->cmd_timer); 3801 3802 rcu_read_lock(); 3803 if (!test_bit(HCI_RESET, &hdev->flags)) { 3804 if (ncmd) { 3805 cancel_delayed_work(&hdev->ncmd_timer); 3806 atomic_set(&hdev->cmd_cnt, 1); 3807 } else { 3808 if (!hci_dev_test_flag(hdev, HCI_CMD_DRAIN_WORKQUEUE)) 3809 queue_delayed_work(hdev->workqueue, &hdev->ncmd_timer, 3810 HCI_NCMD_TIMEOUT); 3811 } 3812 } 3813 rcu_read_unlock(); 3814 } 3815 3816 static u8 hci_cc_le_read_buffer_size_v2(struct hci_dev *hdev, void *data, 3817 struct sk_buff *skb) 3818 { 3819 struct hci_rp_le_read_buffer_size_v2 *rp = data; 3820 3821 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 3822 3823 if (rp->status) 3824 return rp->status; 3825 3826 hdev->le_mtu = __le16_to_cpu(rp->acl_mtu); 3827 hdev->le_pkts = rp->acl_max_pkt; 3828 hdev->iso_mtu = __le16_to_cpu(rp->iso_mtu); 3829 hdev->iso_pkts = rp->iso_max_pkt; 3830 3831 hdev->le_cnt = hdev->le_pkts; 3832 hdev->iso_cnt = hdev->iso_pkts; 3833 3834 BT_DBG("%s acl mtu %d:%d iso mtu %d:%d", hdev->name, hdev->acl_mtu, 3835 hdev->acl_pkts, hdev->iso_mtu, hdev->iso_pkts); 3836 3837 return rp->status; 3838 } 3839 3840 static void hci_unbound_cis_failed(struct hci_dev *hdev, u8 cig, u8 status) 3841 { 3842 struct hci_conn *conn, *tmp; 3843 3844 lockdep_assert_held(&hdev->lock); 3845 3846 list_for_each_entry_safe(conn, tmp, &hdev->conn_hash.list, list) { 3847 if (conn->type != ISO_LINK || !bacmp(&conn->dst, BDADDR_ANY) || 3848 conn->state == BT_OPEN || conn->iso_qos.ucast.cig != cig) 3849 continue; 3850 3851 if (HCI_CONN_HANDLE_UNSET(conn->handle)) 3852 hci_conn_failed(conn, status); 3853 } 3854 } 3855 3856 static u8 hci_cc_le_set_cig_params(struct hci_dev *hdev, void *data, 3857 struct sk_buff *skb) 3858 { 3859 struct hci_rp_le_set_cig_params *rp = data; 3860 struct hci_cp_le_set_cig_params *cp; 3861 struct hci_conn *conn; 3862 u8 status = rp->status; 3863 bool pending = false; 3864 int i; 3865 3866 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 3867 3868 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_CIG_PARAMS); 3869 if (!rp->status && (!cp || rp->num_handles != cp->num_cis || 3870 rp->cig_id != cp->cig_id)) { 3871 bt_dev_err(hdev, "unexpected Set CIG Parameters response data"); 3872 status = HCI_ERROR_UNSPECIFIED; 3873 } 3874 3875 hci_dev_lock(hdev); 3876 3877 /* BLUETOOTH CORE SPECIFICATION Version 5.4 | Vol 4, Part E page 2554 3878 * 3879 * If the Status return parameter is non-zero, then the state of the CIG 3880 * and its CIS configurations shall not be changed by the command. If 3881 * the CIG did not already exist, it shall not be created. 3882 */ 3883 if (status) { 3884 /* Keep current configuration, fail only the unbound CIS */ 3885 hci_unbound_cis_failed(hdev, rp->cig_id, status); 3886 goto unlock; 3887 } 3888 3889 /* BLUETOOTH CORE SPECIFICATION Version 5.3 | Vol 4, Part E page 2553 3890 * 3891 * If the Status return parameter is zero, then the Controller shall 3892 * set the Connection_Handle arrayed return parameter to the connection 3893 * handle(s) corresponding to the CIS configurations specified in 3894 * the CIS_IDs command parameter, in the same order. 3895 */ 3896 for (i = 0; i < rp->num_handles; ++i) { 3897 conn = hci_conn_hash_lookup_cis(hdev, NULL, 0, rp->cig_id, 3898 cp->cis[i].cis_id); 3899 if (!conn || !bacmp(&conn->dst, BDADDR_ANY)) 3900 continue; 3901 3902 if (conn->state != BT_BOUND && conn->state != BT_CONNECT) 3903 continue; 3904 3905 if (hci_conn_set_handle(conn, __le16_to_cpu(rp->handle[i]))) 3906 continue; 3907 3908 if (conn->state == BT_CONNECT) 3909 pending = true; 3910 } 3911 3912 unlock: 3913 if (pending) 3914 hci_le_create_cis_pending(hdev); 3915 3916 hci_dev_unlock(hdev); 3917 3918 return rp->status; 3919 } 3920 3921 static u8 hci_cc_le_setup_iso_path(struct hci_dev *hdev, void *data, 3922 struct sk_buff *skb) 3923 { 3924 struct hci_rp_le_setup_iso_path *rp = data; 3925 struct hci_cp_le_setup_iso_path *cp; 3926 struct hci_conn *conn; 3927 3928 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 3929 3930 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SETUP_ISO_PATH); 3931 if (!cp) 3932 return rp->status; 3933 3934 hci_dev_lock(hdev); 3935 3936 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle)); 3937 if (!conn) 3938 goto unlock; 3939 3940 if (rp->status) { 3941 hci_connect_cfm(conn, rp->status); 3942 hci_conn_del(conn); 3943 goto unlock; 3944 } 3945 3946 switch (cp->direction) { 3947 /* Input (Host to Controller) */ 3948 case 0x00: 3949 /* Only confirm connection if output only */ 3950 if (conn->iso_qos.ucast.out.sdu && !conn->iso_qos.ucast.in.sdu) 3951 hci_connect_cfm(conn, rp->status); 3952 break; 3953 /* Output (Controller to Host) */ 3954 case 0x01: 3955 /* Confirm connection since conn->iso_qos is always configured 3956 * last. 3957 */ 3958 hci_connect_cfm(conn, rp->status); 3959 3960 /* Notify device connected in case it is a BIG Sync */ 3961 if (!rp->status && test_bit(HCI_CONN_BIG_SYNC, &conn->flags)) 3962 mgmt_device_connected(hdev, conn, NULL, 0); 3963 3964 break; 3965 } 3966 3967 unlock: 3968 hci_dev_unlock(hdev); 3969 return rp->status; 3970 } 3971 3972 static void hci_cs_le_create_big(struct hci_dev *hdev, u8 status) 3973 { 3974 bt_dev_dbg(hdev, "status 0x%2.2x", status); 3975 } 3976 3977 static u8 hci_cc_set_per_adv_param(struct hci_dev *hdev, void *data, 3978 struct sk_buff *skb) 3979 { 3980 struct hci_ev_status *rp = data; 3981 struct hci_cp_le_set_per_adv_params *cp; 3982 3983 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 3984 3985 if (rp->status) 3986 return rp->status; 3987 3988 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_PER_ADV_PARAMS); 3989 if (!cp) 3990 return rp->status; 3991 3992 /* TODO: set the conn state */ 3993 return rp->status; 3994 } 3995 3996 static u8 hci_cc_le_set_per_adv_enable(struct hci_dev *hdev, void *data, 3997 struct sk_buff *skb) 3998 { 3999 struct hci_ev_status *rp = data; 4000 struct hci_cp_le_set_per_adv_enable *cp; 4001 struct adv_info *adv = NULL, *n; 4002 u8 per_adv_cnt = 0; 4003 4004 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 4005 4006 if (rp->status) 4007 return rp->status; 4008 4009 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_PER_ADV_ENABLE); 4010 if (!cp) 4011 return rp->status; 4012 4013 hci_dev_lock(hdev); 4014 4015 adv = hci_find_adv_instance(hdev, cp->handle); 4016 4017 if (cp->enable) { 4018 hci_dev_set_flag(hdev, HCI_LE_PER_ADV); 4019 4020 if (adv) 4021 adv->enabled = true; 4022 } else { 4023 /* If just one instance was disabled check if there are 4024 * any other instance enabled before clearing HCI_LE_PER_ADV. 4025 * The current periodic adv instance will be marked as 4026 * disabled once extended advertising is also disabled. 4027 */ 4028 list_for_each_entry_safe(adv, n, &hdev->adv_instances, 4029 list) { 4030 if (adv->periodic && adv->enabled) 4031 per_adv_cnt++; 4032 } 4033 4034 if (per_adv_cnt > 1) 4035 goto unlock; 4036 4037 hci_dev_clear_flag(hdev, HCI_LE_PER_ADV); 4038 } 4039 4040 unlock: 4041 hci_dev_unlock(hdev); 4042 4043 return rp->status; 4044 } 4045 4046 #define HCI_CC_VL(_op, _func, _min, _max) \ 4047 { \ 4048 .op = _op, \ 4049 .func = _func, \ 4050 .min_len = _min, \ 4051 .max_len = _max, \ 4052 } 4053 4054 #define HCI_CC(_op, _func, _len) \ 4055 HCI_CC_VL(_op, _func, _len, _len) 4056 4057 #define HCI_CC_STATUS(_op, _func) \ 4058 HCI_CC(_op, _func, sizeof(struct hci_ev_status)) 4059 4060 static const struct hci_cc { 4061 u16 op; 4062 u8 (*func)(struct hci_dev *hdev, void *data, struct sk_buff *skb); 4063 u16 min_len; 4064 u16 max_len; 4065 } hci_cc_table[] = { 4066 HCI_CC_STATUS(HCI_OP_INQUIRY_CANCEL, hci_cc_inquiry_cancel), 4067 HCI_CC_STATUS(HCI_OP_PERIODIC_INQ, hci_cc_periodic_inq), 4068 HCI_CC_STATUS(HCI_OP_EXIT_PERIODIC_INQ, hci_cc_exit_periodic_inq), 4069 HCI_CC_STATUS(HCI_OP_REMOTE_NAME_REQ_CANCEL, 4070 hci_cc_remote_name_req_cancel), 4071 HCI_CC(HCI_OP_ROLE_DISCOVERY, hci_cc_role_discovery, 4072 sizeof(struct hci_rp_role_discovery)), 4073 HCI_CC(HCI_OP_READ_LINK_POLICY, hci_cc_read_link_policy, 4074 sizeof(struct hci_rp_read_link_policy)), 4075 HCI_CC(HCI_OP_WRITE_LINK_POLICY, hci_cc_write_link_policy, 4076 sizeof(struct hci_rp_write_link_policy)), 4077 HCI_CC(HCI_OP_READ_DEF_LINK_POLICY, hci_cc_read_def_link_policy, 4078 sizeof(struct hci_rp_read_def_link_policy)), 4079 HCI_CC_STATUS(HCI_OP_WRITE_DEF_LINK_POLICY, 4080 hci_cc_write_def_link_policy), 4081 HCI_CC_STATUS(HCI_OP_RESET, hci_cc_reset), 4082 HCI_CC(HCI_OP_READ_STORED_LINK_KEY, hci_cc_read_stored_link_key, 4083 sizeof(struct hci_rp_read_stored_link_key)), 4084 HCI_CC(HCI_OP_DELETE_STORED_LINK_KEY, hci_cc_delete_stored_link_key, 4085 sizeof(struct hci_rp_delete_stored_link_key)), 4086 HCI_CC_STATUS(HCI_OP_WRITE_LOCAL_NAME, hci_cc_write_local_name), 4087 HCI_CC(HCI_OP_READ_LOCAL_NAME, hci_cc_read_local_name, 4088 sizeof(struct hci_rp_read_local_name)), 4089 HCI_CC_STATUS(HCI_OP_WRITE_AUTH_ENABLE, hci_cc_write_auth_enable), 4090 HCI_CC_STATUS(HCI_OP_WRITE_ENCRYPT_MODE, hci_cc_write_encrypt_mode), 4091 HCI_CC_STATUS(HCI_OP_WRITE_SCAN_ENABLE, hci_cc_write_scan_enable), 4092 HCI_CC_STATUS(HCI_OP_SET_EVENT_FLT, hci_cc_set_event_filter), 4093 HCI_CC(HCI_OP_READ_CLASS_OF_DEV, hci_cc_read_class_of_dev, 4094 sizeof(struct hci_rp_read_class_of_dev)), 4095 HCI_CC_STATUS(HCI_OP_WRITE_CLASS_OF_DEV, hci_cc_write_class_of_dev), 4096 HCI_CC(HCI_OP_READ_VOICE_SETTING, hci_cc_read_voice_setting, 4097 sizeof(struct hci_rp_read_voice_setting)), 4098 HCI_CC_STATUS(HCI_OP_WRITE_VOICE_SETTING, hci_cc_write_voice_setting), 4099 HCI_CC(HCI_OP_READ_NUM_SUPPORTED_IAC, hci_cc_read_num_supported_iac, 4100 sizeof(struct hci_rp_read_num_supported_iac)), 4101 HCI_CC_STATUS(HCI_OP_WRITE_SSP_MODE, hci_cc_write_ssp_mode), 4102 HCI_CC_STATUS(HCI_OP_WRITE_SC_SUPPORT, hci_cc_write_sc_support), 4103 HCI_CC(HCI_OP_READ_AUTH_PAYLOAD_TO, hci_cc_read_auth_payload_timeout, 4104 sizeof(struct hci_rp_read_auth_payload_to)), 4105 HCI_CC(HCI_OP_WRITE_AUTH_PAYLOAD_TO, hci_cc_write_auth_payload_timeout, 4106 sizeof(struct hci_rp_write_auth_payload_to)), 4107 HCI_CC(HCI_OP_READ_LOCAL_VERSION, hci_cc_read_local_version, 4108 sizeof(struct hci_rp_read_local_version)), 4109 HCI_CC(HCI_OP_READ_LOCAL_COMMANDS, hci_cc_read_local_commands, 4110 sizeof(struct hci_rp_read_local_commands)), 4111 HCI_CC(HCI_OP_READ_LOCAL_FEATURES, hci_cc_read_local_features, 4112 sizeof(struct hci_rp_read_local_features)), 4113 HCI_CC(HCI_OP_READ_LOCAL_EXT_FEATURES, hci_cc_read_local_ext_features, 4114 sizeof(struct hci_rp_read_local_ext_features)), 4115 HCI_CC(HCI_OP_READ_BUFFER_SIZE, hci_cc_read_buffer_size, 4116 sizeof(struct hci_rp_read_buffer_size)), 4117 HCI_CC(HCI_OP_READ_BD_ADDR, hci_cc_read_bd_addr, 4118 sizeof(struct hci_rp_read_bd_addr)), 4119 HCI_CC(HCI_OP_READ_LOCAL_PAIRING_OPTS, hci_cc_read_local_pairing_opts, 4120 sizeof(struct hci_rp_read_local_pairing_opts)), 4121 HCI_CC(HCI_OP_READ_PAGE_SCAN_ACTIVITY, hci_cc_read_page_scan_activity, 4122 sizeof(struct hci_rp_read_page_scan_activity)), 4123 HCI_CC_STATUS(HCI_OP_WRITE_PAGE_SCAN_ACTIVITY, 4124 hci_cc_write_page_scan_activity), 4125 HCI_CC(HCI_OP_READ_PAGE_SCAN_TYPE, hci_cc_read_page_scan_type, 4126 sizeof(struct hci_rp_read_page_scan_type)), 4127 HCI_CC_STATUS(HCI_OP_WRITE_PAGE_SCAN_TYPE, hci_cc_write_page_scan_type), 4128 HCI_CC(HCI_OP_READ_DATA_BLOCK_SIZE, hci_cc_read_data_block_size, 4129 sizeof(struct hci_rp_read_data_block_size)), 4130 HCI_CC(HCI_OP_READ_FLOW_CONTROL_MODE, hci_cc_read_flow_control_mode, 4131 sizeof(struct hci_rp_read_flow_control_mode)), 4132 HCI_CC(HCI_OP_READ_LOCAL_AMP_INFO, hci_cc_read_local_amp_info, 4133 sizeof(struct hci_rp_read_local_amp_info)), 4134 HCI_CC(HCI_OP_READ_CLOCK, hci_cc_read_clock, 4135 sizeof(struct hci_rp_read_clock)), 4136 HCI_CC(HCI_OP_READ_ENC_KEY_SIZE, hci_cc_read_enc_key_size, 4137 sizeof(struct hci_rp_read_enc_key_size)), 4138 HCI_CC(HCI_OP_READ_INQ_RSP_TX_POWER, hci_cc_read_inq_rsp_tx_power, 4139 sizeof(struct hci_rp_read_inq_rsp_tx_power)), 4140 HCI_CC(HCI_OP_READ_DEF_ERR_DATA_REPORTING, 4141 hci_cc_read_def_err_data_reporting, 4142 sizeof(struct hci_rp_read_def_err_data_reporting)), 4143 HCI_CC_STATUS(HCI_OP_WRITE_DEF_ERR_DATA_REPORTING, 4144 hci_cc_write_def_err_data_reporting), 4145 HCI_CC(HCI_OP_PIN_CODE_REPLY, hci_cc_pin_code_reply, 4146 sizeof(struct hci_rp_pin_code_reply)), 4147 HCI_CC(HCI_OP_PIN_CODE_NEG_REPLY, hci_cc_pin_code_neg_reply, 4148 sizeof(struct hci_rp_pin_code_neg_reply)), 4149 HCI_CC(HCI_OP_READ_LOCAL_OOB_DATA, hci_cc_read_local_oob_data, 4150 sizeof(struct hci_rp_read_local_oob_data)), 4151 HCI_CC(HCI_OP_READ_LOCAL_OOB_EXT_DATA, hci_cc_read_local_oob_ext_data, 4152 sizeof(struct hci_rp_read_local_oob_ext_data)), 4153 HCI_CC(HCI_OP_LE_READ_BUFFER_SIZE, hci_cc_le_read_buffer_size, 4154 sizeof(struct hci_rp_le_read_buffer_size)), 4155 HCI_CC(HCI_OP_LE_READ_LOCAL_FEATURES, hci_cc_le_read_local_features, 4156 sizeof(struct hci_rp_le_read_local_features)), 4157 HCI_CC(HCI_OP_LE_READ_ADV_TX_POWER, hci_cc_le_read_adv_tx_power, 4158 sizeof(struct hci_rp_le_read_adv_tx_power)), 4159 HCI_CC(HCI_OP_USER_CONFIRM_REPLY, hci_cc_user_confirm_reply, 4160 sizeof(struct hci_rp_user_confirm_reply)), 4161 HCI_CC(HCI_OP_USER_CONFIRM_NEG_REPLY, hci_cc_user_confirm_neg_reply, 4162 sizeof(struct hci_rp_user_confirm_reply)), 4163 HCI_CC(HCI_OP_USER_PASSKEY_REPLY, hci_cc_user_passkey_reply, 4164 sizeof(struct hci_rp_user_confirm_reply)), 4165 HCI_CC(HCI_OP_USER_PASSKEY_NEG_REPLY, hci_cc_user_passkey_neg_reply, 4166 sizeof(struct hci_rp_user_confirm_reply)), 4167 HCI_CC_STATUS(HCI_OP_LE_SET_RANDOM_ADDR, hci_cc_le_set_random_addr), 4168 HCI_CC_STATUS(HCI_OP_LE_SET_ADV_ENABLE, hci_cc_le_set_adv_enable), 4169 HCI_CC_STATUS(HCI_OP_LE_SET_SCAN_PARAM, hci_cc_le_set_scan_param), 4170 HCI_CC_STATUS(HCI_OP_LE_SET_SCAN_ENABLE, hci_cc_le_set_scan_enable), 4171 HCI_CC(HCI_OP_LE_READ_ACCEPT_LIST_SIZE, 4172 hci_cc_le_read_accept_list_size, 4173 sizeof(struct hci_rp_le_read_accept_list_size)), 4174 HCI_CC_STATUS(HCI_OP_LE_CLEAR_ACCEPT_LIST, hci_cc_le_clear_accept_list), 4175 HCI_CC_STATUS(HCI_OP_LE_ADD_TO_ACCEPT_LIST, 4176 hci_cc_le_add_to_accept_list), 4177 HCI_CC_STATUS(HCI_OP_LE_DEL_FROM_ACCEPT_LIST, 4178 hci_cc_le_del_from_accept_list), 4179 HCI_CC(HCI_OP_LE_READ_SUPPORTED_STATES, hci_cc_le_read_supported_states, 4180 sizeof(struct hci_rp_le_read_supported_states)), 4181 HCI_CC(HCI_OP_LE_READ_DEF_DATA_LEN, hci_cc_le_read_def_data_len, 4182 sizeof(struct hci_rp_le_read_def_data_len)), 4183 HCI_CC_STATUS(HCI_OP_LE_WRITE_DEF_DATA_LEN, 4184 hci_cc_le_write_def_data_len), 4185 HCI_CC_STATUS(HCI_OP_LE_ADD_TO_RESOLV_LIST, 4186 hci_cc_le_add_to_resolv_list), 4187 HCI_CC_STATUS(HCI_OP_LE_DEL_FROM_RESOLV_LIST, 4188 hci_cc_le_del_from_resolv_list), 4189 HCI_CC_STATUS(HCI_OP_LE_CLEAR_RESOLV_LIST, 4190 hci_cc_le_clear_resolv_list), 4191 HCI_CC(HCI_OP_LE_READ_RESOLV_LIST_SIZE, hci_cc_le_read_resolv_list_size, 4192 sizeof(struct hci_rp_le_read_resolv_list_size)), 4193 HCI_CC_STATUS(HCI_OP_LE_SET_ADDR_RESOLV_ENABLE, 4194 hci_cc_le_set_addr_resolution_enable), 4195 HCI_CC(HCI_OP_LE_READ_MAX_DATA_LEN, hci_cc_le_read_max_data_len, 4196 sizeof(struct hci_rp_le_read_max_data_len)), 4197 HCI_CC_STATUS(HCI_OP_WRITE_LE_HOST_SUPPORTED, 4198 hci_cc_write_le_host_supported), 4199 HCI_CC_STATUS(HCI_OP_LE_SET_ADV_PARAM, hci_cc_set_adv_param), 4200 HCI_CC(HCI_OP_READ_RSSI, hci_cc_read_rssi, 4201 sizeof(struct hci_rp_read_rssi)), 4202 HCI_CC(HCI_OP_READ_TX_POWER, hci_cc_read_tx_power, 4203 sizeof(struct hci_rp_read_tx_power)), 4204 HCI_CC_STATUS(HCI_OP_WRITE_SSP_DEBUG_MODE, hci_cc_write_ssp_debug_mode), 4205 HCI_CC_STATUS(HCI_OP_LE_SET_EXT_SCAN_PARAMS, 4206 hci_cc_le_set_ext_scan_param), 4207 HCI_CC_STATUS(HCI_OP_LE_SET_EXT_SCAN_ENABLE, 4208 hci_cc_le_set_ext_scan_enable), 4209 HCI_CC_STATUS(HCI_OP_LE_SET_DEFAULT_PHY, hci_cc_le_set_default_phy), 4210 HCI_CC(HCI_OP_LE_READ_NUM_SUPPORTED_ADV_SETS, 4211 hci_cc_le_read_num_adv_sets, 4212 sizeof(struct hci_rp_le_read_num_supported_adv_sets)), 4213 HCI_CC(HCI_OP_LE_SET_EXT_ADV_PARAMS, hci_cc_set_ext_adv_param, 4214 sizeof(struct hci_rp_le_set_ext_adv_params)), 4215 HCI_CC_STATUS(HCI_OP_LE_SET_EXT_ADV_ENABLE, 4216 hci_cc_le_set_ext_adv_enable), 4217 HCI_CC_STATUS(HCI_OP_LE_SET_ADV_SET_RAND_ADDR, 4218 hci_cc_le_set_adv_set_random_addr), 4219 HCI_CC_STATUS(HCI_OP_LE_REMOVE_ADV_SET, hci_cc_le_remove_adv_set), 4220 HCI_CC_STATUS(HCI_OP_LE_CLEAR_ADV_SETS, hci_cc_le_clear_adv_sets), 4221 HCI_CC_STATUS(HCI_OP_LE_SET_PER_ADV_PARAMS, hci_cc_set_per_adv_param), 4222 HCI_CC_STATUS(HCI_OP_LE_SET_PER_ADV_ENABLE, 4223 hci_cc_le_set_per_adv_enable), 4224 HCI_CC(HCI_OP_LE_READ_TRANSMIT_POWER, hci_cc_le_read_transmit_power, 4225 sizeof(struct hci_rp_le_read_transmit_power)), 4226 HCI_CC_STATUS(HCI_OP_LE_SET_PRIVACY_MODE, hci_cc_le_set_privacy_mode), 4227 HCI_CC(HCI_OP_LE_READ_BUFFER_SIZE_V2, hci_cc_le_read_buffer_size_v2, 4228 sizeof(struct hci_rp_le_read_buffer_size_v2)), 4229 HCI_CC_VL(HCI_OP_LE_SET_CIG_PARAMS, hci_cc_le_set_cig_params, 4230 sizeof(struct hci_rp_le_set_cig_params), HCI_MAX_EVENT_SIZE), 4231 HCI_CC(HCI_OP_LE_SETUP_ISO_PATH, hci_cc_le_setup_iso_path, 4232 sizeof(struct hci_rp_le_setup_iso_path)), 4233 }; 4234 4235 static u8 hci_cc_func(struct hci_dev *hdev, const struct hci_cc *cc, 4236 struct sk_buff *skb) 4237 { 4238 void *data; 4239 4240 if (skb->len < cc->min_len) { 4241 bt_dev_err(hdev, "unexpected cc 0x%4.4x length: %u < %u", 4242 cc->op, skb->len, cc->min_len); 4243 return HCI_ERROR_UNSPECIFIED; 4244 } 4245 4246 /* Just warn if the length is over max_len size it still be possible to 4247 * partially parse the cc so leave to callback to decide if that is 4248 * acceptable. 4249 */ 4250 if (skb->len > cc->max_len) 4251 bt_dev_warn(hdev, "unexpected cc 0x%4.4x length: %u > %u", 4252 cc->op, skb->len, cc->max_len); 4253 4254 data = hci_cc_skb_pull(hdev, skb, cc->op, cc->min_len); 4255 if (!data) 4256 return HCI_ERROR_UNSPECIFIED; 4257 4258 return cc->func(hdev, data, skb); 4259 } 4260 4261 static void hci_cmd_complete_evt(struct hci_dev *hdev, void *data, 4262 struct sk_buff *skb, u16 *opcode, u8 *status, 4263 hci_req_complete_t *req_complete, 4264 hci_req_complete_skb_t *req_complete_skb) 4265 { 4266 struct hci_ev_cmd_complete *ev = data; 4267 int i; 4268 4269 *opcode = __le16_to_cpu(ev->opcode); 4270 4271 bt_dev_dbg(hdev, "opcode 0x%4.4x", *opcode); 4272 4273 for (i = 0; i < ARRAY_SIZE(hci_cc_table); i++) { 4274 if (hci_cc_table[i].op == *opcode) { 4275 *status = hci_cc_func(hdev, &hci_cc_table[i], skb); 4276 break; 4277 } 4278 } 4279 4280 if (i == ARRAY_SIZE(hci_cc_table)) { 4281 /* Unknown opcode, assume byte 0 contains the status, so 4282 * that e.g. __hci_cmd_sync() properly returns errors 4283 * for vendor specific commands send by HCI drivers. 4284 * If a vendor doesn't actually follow this convention we may 4285 * need to introduce a vendor CC table in order to properly set 4286 * the status. 4287 */ 4288 *status = skb->data[0]; 4289 } 4290 4291 handle_cmd_cnt_and_timer(hdev, ev->ncmd); 4292 4293 hci_req_cmd_complete(hdev, *opcode, *status, req_complete, 4294 req_complete_skb); 4295 4296 if (hci_dev_test_flag(hdev, HCI_CMD_PENDING)) { 4297 bt_dev_err(hdev, 4298 "unexpected event for opcode 0x%4.4x", *opcode); 4299 return; 4300 } 4301 4302 if (atomic_read(&hdev->cmd_cnt) && !skb_queue_empty(&hdev->cmd_q)) 4303 queue_work(hdev->workqueue, &hdev->cmd_work); 4304 } 4305 4306 static void hci_cs_le_create_cis(struct hci_dev *hdev, u8 status) 4307 { 4308 struct hci_cp_le_create_cis *cp; 4309 bool pending = false; 4310 int i; 4311 4312 bt_dev_dbg(hdev, "status 0x%2.2x", status); 4313 4314 if (!status) 4315 return; 4316 4317 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_CREATE_CIS); 4318 if (!cp) 4319 return; 4320 4321 hci_dev_lock(hdev); 4322 4323 /* Remove connection if command failed */ 4324 for (i = 0; cp->num_cis; cp->num_cis--, i++) { 4325 struct hci_conn *conn; 4326 u16 handle; 4327 4328 handle = __le16_to_cpu(cp->cis[i].cis_handle); 4329 4330 conn = hci_conn_hash_lookup_handle(hdev, handle); 4331 if (conn) { 4332 if (test_and_clear_bit(HCI_CONN_CREATE_CIS, 4333 &conn->flags)) 4334 pending = true; 4335 conn->state = BT_CLOSED; 4336 hci_connect_cfm(conn, status); 4337 hci_conn_del(conn); 4338 } 4339 } 4340 4341 if (pending) 4342 hci_le_create_cis_pending(hdev); 4343 4344 hci_dev_unlock(hdev); 4345 } 4346 4347 #define HCI_CS(_op, _func) \ 4348 { \ 4349 .op = _op, \ 4350 .func = _func, \ 4351 } 4352 4353 static const struct hci_cs { 4354 u16 op; 4355 void (*func)(struct hci_dev *hdev, __u8 status); 4356 } hci_cs_table[] = { 4357 HCI_CS(HCI_OP_INQUIRY, hci_cs_inquiry), 4358 HCI_CS(HCI_OP_CREATE_CONN, hci_cs_create_conn), 4359 HCI_CS(HCI_OP_DISCONNECT, hci_cs_disconnect), 4360 HCI_CS(HCI_OP_ADD_SCO, hci_cs_add_sco), 4361 HCI_CS(HCI_OP_AUTH_REQUESTED, hci_cs_auth_requested), 4362 HCI_CS(HCI_OP_SET_CONN_ENCRYPT, hci_cs_set_conn_encrypt), 4363 HCI_CS(HCI_OP_REMOTE_NAME_REQ, hci_cs_remote_name_req), 4364 HCI_CS(HCI_OP_READ_REMOTE_FEATURES, hci_cs_read_remote_features), 4365 HCI_CS(HCI_OP_READ_REMOTE_EXT_FEATURES, 4366 hci_cs_read_remote_ext_features), 4367 HCI_CS(HCI_OP_SETUP_SYNC_CONN, hci_cs_setup_sync_conn), 4368 HCI_CS(HCI_OP_ENHANCED_SETUP_SYNC_CONN, 4369 hci_cs_enhanced_setup_sync_conn), 4370 HCI_CS(HCI_OP_SNIFF_MODE, hci_cs_sniff_mode), 4371 HCI_CS(HCI_OP_EXIT_SNIFF_MODE, hci_cs_exit_sniff_mode), 4372 HCI_CS(HCI_OP_SWITCH_ROLE, hci_cs_switch_role), 4373 HCI_CS(HCI_OP_LE_CREATE_CONN, hci_cs_le_create_conn), 4374 HCI_CS(HCI_OP_LE_READ_REMOTE_FEATURES, hci_cs_le_read_remote_features), 4375 HCI_CS(HCI_OP_LE_START_ENC, hci_cs_le_start_enc), 4376 HCI_CS(HCI_OP_LE_EXT_CREATE_CONN, hci_cs_le_ext_create_conn), 4377 HCI_CS(HCI_OP_LE_CREATE_CIS, hci_cs_le_create_cis), 4378 HCI_CS(HCI_OP_LE_CREATE_BIG, hci_cs_le_create_big), 4379 }; 4380 4381 static void hci_cmd_status_evt(struct hci_dev *hdev, void *data, 4382 struct sk_buff *skb, u16 *opcode, u8 *status, 4383 hci_req_complete_t *req_complete, 4384 hci_req_complete_skb_t *req_complete_skb) 4385 { 4386 struct hci_ev_cmd_status *ev = data; 4387 int i; 4388 4389 *opcode = __le16_to_cpu(ev->opcode); 4390 *status = ev->status; 4391 4392 bt_dev_dbg(hdev, "opcode 0x%4.4x", *opcode); 4393 4394 for (i = 0; i < ARRAY_SIZE(hci_cs_table); i++) { 4395 if (hci_cs_table[i].op == *opcode) { 4396 hci_cs_table[i].func(hdev, ev->status); 4397 break; 4398 } 4399 } 4400 4401 handle_cmd_cnt_and_timer(hdev, ev->ncmd); 4402 4403 /* Indicate request completion if the command failed. Also, if 4404 * we're not waiting for a special event and we get a success 4405 * command status we should try to flag the request as completed 4406 * (since for this kind of commands there will not be a command 4407 * complete event). 4408 */ 4409 if (ev->status || (hdev->req_skb && !hci_skb_event(hdev->req_skb))) { 4410 hci_req_cmd_complete(hdev, *opcode, ev->status, req_complete, 4411 req_complete_skb); 4412 if (hci_dev_test_flag(hdev, HCI_CMD_PENDING)) { 4413 bt_dev_err(hdev, "unexpected event for opcode 0x%4.4x", 4414 *opcode); 4415 return; 4416 } 4417 } 4418 4419 if (atomic_read(&hdev->cmd_cnt) && !skb_queue_empty(&hdev->cmd_q)) 4420 queue_work(hdev->workqueue, &hdev->cmd_work); 4421 } 4422 4423 static void hci_hardware_error_evt(struct hci_dev *hdev, void *data, 4424 struct sk_buff *skb) 4425 { 4426 struct hci_ev_hardware_error *ev = data; 4427 4428 bt_dev_dbg(hdev, "code 0x%2.2x", ev->code); 4429 4430 hdev->hw_error_code = ev->code; 4431 4432 queue_work(hdev->req_workqueue, &hdev->error_reset); 4433 } 4434 4435 static void hci_role_change_evt(struct hci_dev *hdev, void *data, 4436 struct sk_buff *skb) 4437 { 4438 struct hci_ev_role_change *ev = data; 4439 struct hci_conn *conn; 4440 4441 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 4442 4443 hci_dev_lock(hdev); 4444 4445 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr); 4446 if (conn) { 4447 if (!ev->status) 4448 conn->role = ev->role; 4449 4450 clear_bit(HCI_CONN_RSWITCH_PEND, &conn->flags); 4451 4452 hci_role_switch_cfm(conn, ev->status, ev->role); 4453 } 4454 4455 hci_dev_unlock(hdev); 4456 } 4457 4458 static void hci_num_comp_pkts_evt(struct hci_dev *hdev, void *data, 4459 struct sk_buff *skb) 4460 { 4461 struct hci_ev_num_comp_pkts *ev = data; 4462 int i; 4463 4464 if (!hci_ev_skb_pull(hdev, skb, HCI_EV_NUM_COMP_PKTS, 4465 flex_array_size(ev, handles, ev->num))) 4466 return; 4467 4468 if (hdev->flow_ctl_mode != HCI_FLOW_CTL_MODE_PACKET_BASED) { 4469 bt_dev_err(hdev, "wrong event for mode %d", hdev->flow_ctl_mode); 4470 return; 4471 } 4472 4473 bt_dev_dbg(hdev, "num %d", ev->num); 4474 4475 for (i = 0; i < ev->num; i++) { 4476 struct hci_comp_pkts_info *info = &ev->handles[i]; 4477 struct hci_conn *conn; 4478 __u16 handle, count; 4479 4480 handle = __le16_to_cpu(info->handle); 4481 count = __le16_to_cpu(info->count); 4482 4483 conn = hci_conn_hash_lookup_handle(hdev, handle); 4484 if (!conn) 4485 continue; 4486 4487 conn->sent -= count; 4488 4489 switch (conn->type) { 4490 case ACL_LINK: 4491 hdev->acl_cnt += count; 4492 if (hdev->acl_cnt > hdev->acl_pkts) 4493 hdev->acl_cnt = hdev->acl_pkts; 4494 break; 4495 4496 case LE_LINK: 4497 if (hdev->le_pkts) { 4498 hdev->le_cnt += count; 4499 if (hdev->le_cnt > hdev->le_pkts) 4500 hdev->le_cnt = hdev->le_pkts; 4501 } else { 4502 hdev->acl_cnt += count; 4503 if (hdev->acl_cnt > hdev->acl_pkts) 4504 hdev->acl_cnt = hdev->acl_pkts; 4505 } 4506 break; 4507 4508 case SCO_LINK: 4509 hdev->sco_cnt += count; 4510 if (hdev->sco_cnt > hdev->sco_pkts) 4511 hdev->sco_cnt = hdev->sco_pkts; 4512 break; 4513 4514 case ISO_LINK: 4515 if (hdev->iso_pkts) { 4516 hdev->iso_cnt += count; 4517 if (hdev->iso_cnt > hdev->iso_pkts) 4518 hdev->iso_cnt = hdev->iso_pkts; 4519 } else if (hdev->le_pkts) { 4520 hdev->le_cnt += count; 4521 if (hdev->le_cnt > hdev->le_pkts) 4522 hdev->le_cnt = hdev->le_pkts; 4523 } else { 4524 hdev->acl_cnt += count; 4525 if (hdev->acl_cnt > hdev->acl_pkts) 4526 hdev->acl_cnt = hdev->acl_pkts; 4527 } 4528 break; 4529 4530 default: 4531 bt_dev_err(hdev, "unknown type %d conn %p", 4532 conn->type, conn); 4533 break; 4534 } 4535 } 4536 4537 queue_work(hdev->workqueue, &hdev->tx_work); 4538 } 4539 4540 static struct hci_conn *__hci_conn_lookup_handle(struct hci_dev *hdev, 4541 __u16 handle) 4542 { 4543 struct hci_chan *chan; 4544 4545 switch (hdev->dev_type) { 4546 case HCI_PRIMARY: 4547 return hci_conn_hash_lookup_handle(hdev, handle); 4548 case HCI_AMP: 4549 chan = hci_chan_lookup_handle(hdev, handle); 4550 if (chan) 4551 return chan->conn; 4552 break; 4553 default: 4554 bt_dev_err(hdev, "unknown dev_type %d", hdev->dev_type); 4555 break; 4556 } 4557 4558 return NULL; 4559 } 4560 4561 static void hci_num_comp_blocks_evt(struct hci_dev *hdev, void *data, 4562 struct sk_buff *skb) 4563 { 4564 struct hci_ev_num_comp_blocks *ev = data; 4565 int i; 4566 4567 if (!hci_ev_skb_pull(hdev, skb, HCI_EV_NUM_COMP_BLOCKS, 4568 flex_array_size(ev, handles, ev->num_hndl))) 4569 return; 4570 4571 if (hdev->flow_ctl_mode != HCI_FLOW_CTL_MODE_BLOCK_BASED) { 4572 bt_dev_err(hdev, "wrong event for mode %d", 4573 hdev->flow_ctl_mode); 4574 return; 4575 } 4576 4577 bt_dev_dbg(hdev, "num_blocks %d num_hndl %d", ev->num_blocks, 4578 ev->num_hndl); 4579 4580 for (i = 0; i < ev->num_hndl; i++) { 4581 struct hci_comp_blocks_info *info = &ev->handles[i]; 4582 struct hci_conn *conn = NULL; 4583 __u16 handle, block_count; 4584 4585 handle = __le16_to_cpu(info->handle); 4586 block_count = __le16_to_cpu(info->blocks); 4587 4588 conn = __hci_conn_lookup_handle(hdev, handle); 4589 if (!conn) 4590 continue; 4591 4592 conn->sent -= block_count; 4593 4594 switch (conn->type) { 4595 case ACL_LINK: 4596 case AMP_LINK: 4597 hdev->block_cnt += block_count; 4598 if (hdev->block_cnt > hdev->num_blocks) 4599 hdev->block_cnt = hdev->num_blocks; 4600 break; 4601 4602 default: 4603 bt_dev_err(hdev, "unknown type %d conn %p", 4604 conn->type, conn); 4605 break; 4606 } 4607 } 4608 4609 queue_work(hdev->workqueue, &hdev->tx_work); 4610 } 4611 4612 static void hci_mode_change_evt(struct hci_dev *hdev, void *data, 4613 struct sk_buff *skb) 4614 { 4615 struct hci_ev_mode_change *ev = data; 4616 struct hci_conn *conn; 4617 4618 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 4619 4620 hci_dev_lock(hdev); 4621 4622 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle)); 4623 if (conn) { 4624 conn->mode = ev->mode; 4625 4626 if (!test_and_clear_bit(HCI_CONN_MODE_CHANGE_PEND, 4627 &conn->flags)) { 4628 if (conn->mode == HCI_CM_ACTIVE) 4629 set_bit(HCI_CONN_POWER_SAVE, &conn->flags); 4630 else 4631 clear_bit(HCI_CONN_POWER_SAVE, &conn->flags); 4632 } 4633 4634 if (test_and_clear_bit(HCI_CONN_SCO_SETUP_PEND, &conn->flags)) 4635 hci_sco_setup(conn, ev->status); 4636 } 4637 4638 hci_dev_unlock(hdev); 4639 } 4640 4641 static void hci_pin_code_request_evt(struct hci_dev *hdev, void *data, 4642 struct sk_buff *skb) 4643 { 4644 struct hci_ev_pin_code_req *ev = data; 4645 struct hci_conn *conn; 4646 4647 bt_dev_dbg(hdev, ""); 4648 4649 hci_dev_lock(hdev); 4650 4651 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr); 4652 if (!conn) 4653 goto unlock; 4654 4655 if (conn->state == BT_CONNECTED) { 4656 hci_conn_hold(conn); 4657 conn->disc_timeout = HCI_PAIRING_TIMEOUT; 4658 hci_conn_drop(conn); 4659 } 4660 4661 if (!hci_dev_test_flag(hdev, HCI_BONDABLE) && 4662 !test_bit(HCI_CONN_AUTH_INITIATOR, &conn->flags)) { 4663 hci_send_cmd(hdev, HCI_OP_PIN_CODE_NEG_REPLY, 4664 sizeof(ev->bdaddr), &ev->bdaddr); 4665 } else if (hci_dev_test_flag(hdev, HCI_MGMT)) { 4666 u8 secure; 4667 4668 if (conn->pending_sec_level == BT_SECURITY_HIGH) 4669 secure = 1; 4670 else 4671 secure = 0; 4672 4673 mgmt_pin_code_request(hdev, &ev->bdaddr, secure); 4674 } 4675 4676 unlock: 4677 hci_dev_unlock(hdev); 4678 } 4679 4680 static void conn_set_key(struct hci_conn *conn, u8 key_type, u8 pin_len) 4681 { 4682 if (key_type == HCI_LK_CHANGED_COMBINATION) 4683 return; 4684 4685 conn->pin_length = pin_len; 4686 conn->key_type = key_type; 4687 4688 switch (key_type) { 4689 case HCI_LK_LOCAL_UNIT: 4690 case HCI_LK_REMOTE_UNIT: 4691 case HCI_LK_DEBUG_COMBINATION: 4692 return; 4693 case HCI_LK_COMBINATION: 4694 if (pin_len == 16) 4695 conn->pending_sec_level = BT_SECURITY_HIGH; 4696 else 4697 conn->pending_sec_level = BT_SECURITY_MEDIUM; 4698 break; 4699 case HCI_LK_UNAUTH_COMBINATION_P192: 4700 case HCI_LK_UNAUTH_COMBINATION_P256: 4701 conn->pending_sec_level = BT_SECURITY_MEDIUM; 4702 break; 4703 case HCI_LK_AUTH_COMBINATION_P192: 4704 conn->pending_sec_level = BT_SECURITY_HIGH; 4705 break; 4706 case HCI_LK_AUTH_COMBINATION_P256: 4707 conn->pending_sec_level = BT_SECURITY_FIPS; 4708 break; 4709 } 4710 } 4711 4712 static void hci_link_key_request_evt(struct hci_dev *hdev, void *data, 4713 struct sk_buff *skb) 4714 { 4715 struct hci_ev_link_key_req *ev = data; 4716 struct hci_cp_link_key_reply cp; 4717 struct hci_conn *conn; 4718 struct link_key *key; 4719 4720 bt_dev_dbg(hdev, ""); 4721 4722 if (!hci_dev_test_flag(hdev, HCI_MGMT)) 4723 return; 4724 4725 hci_dev_lock(hdev); 4726 4727 key = hci_find_link_key(hdev, &ev->bdaddr); 4728 if (!key) { 4729 bt_dev_dbg(hdev, "link key not found for %pMR", &ev->bdaddr); 4730 goto not_found; 4731 } 4732 4733 bt_dev_dbg(hdev, "found key type %u for %pMR", key->type, &ev->bdaddr); 4734 4735 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr); 4736 if (conn) { 4737 clear_bit(HCI_CONN_NEW_LINK_KEY, &conn->flags); 4738 4739 if ((key->type == HCI_LK_UNAUTH_COMBINATION_P192 || 4740 key->type == HCI_LK_UNAUTH_COMBINATION_P256) && 4741 conn->auth_type != 0xff && (conn->auth_type & 0x01)) { 4742 bt_dev_dbg(hdev, "ignoring unauthenticated key"); 4743 goto not_found; 4744 } 4745 4746 if (key->type == HCI_LK_COMBINATION && key->pin_len < 16 && 4747 (conn->pending_sec_level == BT_SECURITY_HIGH || 4748 conn->pending_sec_level == BT_SECURITY_FIPS)) { 4749 bt_dev_dbg(hdev, "ignoring key unauthenticated for high security"); 4750 goto not_found; 4751 } 4752 4753 conn_set_key(conn, key->type, key->pin_len); 4754 } 4755 4756 bacpy(&cp.bdaddr, &ev->bdaddr); 4757 memcpy(cp.link_key, key->val, HCI_LINK_KEY_SIZE); 4758 4759 hci_send_cmd(hdev, HCI_OP_LINK_KEY_REPLY, sizeof(cp), &cp); 4760 4761 hci_dev_unlock(hdev); 4762 4763 return; 4764 4765 not_found: 4766 hci_send_cmd(hdev, HCI_OP_LINK_KEY_NEG_REPLY, 6, &ev->bdaddr); 4767 hci_dev_unlock(hdev); 4768 } 4769 4770 static void hci_link_key_notify_evt(struct hci_dev *hdev, void *data, 4771 struct sk_buff *skb) 4772 { 4773 struct hci_ev_link_key_notify *ev = data; 4774 struct hci_conn *conn; 4775 struct link_key *key; 4776 bool persistent; 4777 u8 pin_len = 0; 4778 4779 bt_dev_dbg(hdev, ""); 4780 4781 hci_dev_lock(hdev); 4782 4783 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr); 4784 if (!conn) 4785 goto unlock; 4786 4787 /* Ignore NULL link key against CVE-2020-26555 */ 4788 if (!crypto_memneq(ev->link_key, ZERO_KEY, HCI_LINK_KEY_SIZE)) { 4789 bt_dev_dbg(hdev, "Ignore NULL link key (ZERO KEY) for %pMR", 4790 &ev->bdaddr); 4791 hci_disconnect(conn, HCI_ERROR_AUTH_FAILURE); 4792 hci_conn_drop(conn); 4793 goto unlock; 4794 } 4795 4796 hci_conn_hold(conn); 4797 conn->disc_timeout = HCI_DISCONN_TIMEOUT; 4798 hci_conn_drop(conn); 4799 4800 set_bit(HCI_CONN_NEW_LINK_KEY, &conn->flags); 4801 conn_set_key(conn, ev->key_type, conn->pin_length); 4802 4803 if (!hci_dev_test_flag(hdev, HCI_MGMT)) 4804 goto unlock; 4805 4806 key = hci_add_link_key(hdev, conn, &ev->bdaddr, ev->link_key, 4807 ev->key_type, pin_len, &persistent); 4808 if (!key) 4809 goto unlock; 4810 4811 /* Update connection information since adding the key will have 4812 * fixed up the type in the case of changed combination keys. 4813 */ 4814 if (ev->key_type == HCI_LK_CHANGED_COMBINATION) 4815 conn_set_key(conn, key->type, key->pin_len); 4816 4817 mgmt_new_link_key(hdev, key, persistent); 4818 4819 /* Keep debug keys around only if the HCI_KEEP_DEBUG_KEYS flag 4820 * is set. If it's not set simply remove the key from the kernel 4821 * list (we've still notified user space about it but with 4822 * store_hint being 0). 4823 */ 4824 if (key->type == HCI_LK_DEBUG_COMBINATION && 4825 !hci_dev_test_flag(hdev, HCI_KEEP_DEBUG_KEYS)) { 4826 list_del_rcu(&key->list); 4827 kfree_rcu(key, rcu); 4828 goto unlock; 4829 } 4830 4831 if (persistent) 4832 clear_bit(HCI_CONN_FLUSH_KEY, &conn->flags); 4833 else 4834 set_bit(HCI_CONN_FLUSH_KEY, &conn->flags); 4835 4836 unlock: 4837 hci_dev_unlock(hdev); 4838 } 4839 4840 static void hci_clock_offset_evt(struct hci_dev *hdev, void *data, 4841 struct sk_buff *skb) 4842 { 4843 struct hci_ev_clock_offset *ev = data; 4844 struct hci_conn *conn; 4845 4846 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 4847 4848 hci_dev_lock(hdev); 4849 4850 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle)); 4851 if (conn && !ev->status) { 4852 struct inquiry_entry *ie; 4853 4854 ie = hci_inquiry_cache_lookup(hdev, &conn->dst); 4855 if (ie) { 4856 ie->data.clock_offset = ev->clock_offset; 4857 ie->timestamp = jiffies; 4858 } 4859 } 4860 4861 hci_dev_unlock(hdev); 4862 } 4863 4864 static void hci_pkt_type_change_evt(struct hci_dev *hdev, void *data, 4865 struct sk_buff *skb) 4866 { 4867 struct hci_ev_pkt_type_change *ev = data; 4868 struct hci_conn *conn; 4869 4870 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 4871 4872 hci_dev_lock(hdev); 4873 4874 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle)); 4875 if (conn && !ev->status) 4876 conn->pkt_type = __le16_to_cpu(ev->pkt_type); 4877 4878 hci_dev_unlock(hdev); 4879 } 4880 4881 static void hci_pscan_rep_mode_evt(struct hci_dev *hdev, void *data, 4882 struct sk_buff *skb) 4883 { 4884 struct hci_ev_pscan_rep_mode *ev = data; 4885 struct inquiry_entry *ie; 4886 4887 bt_dev_dbg(hdev, ""); 4888 4889 hci_dev_lock(hdev); 4890 4891 ie = hci_inquiry_cache_lookup(hdev, &ev->bdaddr); 4892 if (ie) { 4893 ie->data.pscan_rep_mode = ev->pscan_rep_mode; 4894 ie->timestamp = jiffies; 4895 } 4896 4897 hci_dev_unlock(hdev); 4898 } 4899 4900 static void hci_inquiry_result_with_rssi_evt(struct hci_dev *hdev, void *edata, 4901 struct sk_buff *skb) 4902 { 4903 struct hci_ev_inquiry_result_rssi *ev = edata; 4904 struct inquiry_data data; 4905 int i; 4906 4907 bt_dev_dbg(hdev, "num_rsp %d", ev->num); 4908 4909 if (!ev->num) 4910 return; 4911 4912 if (hci_dev_test_flag(hdev, HCI_PERIODIC_INQ)) 4913 return; 4914 4915 hci_dev_lock(hdev); 4916 4917 if (skb->len == array_size(ev->num, 4918 sizeof(struct inquiry_info_rssi_pscan))) { 4919 struct inquiry_info_rssi_pscan *info; 4920 4921 for (i = 0; i < ev->num; i++) { 4922 u32 flags; 4923 4924 info = hci_ev_skb_pull(hdev, skb, 4925 HCI_EV_INQUIRY_RESULT_WITH_RSSI, 4926 sizeof(*info)); 4927 if (!info) { 4928 bt_dev_err(hdev, "Malformed HCI Event: 0x%2.2x", 4929 HCI_EV_INQUIRY_RESULT_WITH_RSSI); 4930 goto unlock; 4931 } 4932 4933 bacpy(&data.bdaddr, &info->bdaddr); 4934 data.pscan_rep_mode = info->pscan_rep_mode; 4935 data.pscan_period_mode = info->pscan_period_mode; 4936 data.pscan_mode = info->pscan_mode; 4937 memcpy(data.dev_class, info->dev_class, 3); 4938 data.clock_offset = info->clock_offset; 4939 data.rssi = info->rssi; 4940 data.ssp_mode = 0x00; 4941 4942 flags = hci_inquiry_cache_update(hdev, &data, false); 4943 4944 mgmt_device_found(hdev, &info->bdaddr, ACL_LINK, 0x00, 4945 info->dev_class, info->rssi, 4946 flags, NULL, 0, NULL, 0, 0); 4947 } 4948 } else if (skb->len == array_size(ev->num, 4949 sizeof(struct inquiry_info_rssi))) { 4950 struct inquiry_info_rssi *info; 4951 4952 for (i = 0; i < ev->num; i++) { 4953 u32 flags; 4954 4955 info = hci_ev_skb_pull(hdev, skb, 4956 HCI_EV_INQUIRY_RESULT_WITH_RSSI, 4957 sizeof(*info)); 4958 if (!info) { 4959 bt_dev_err(hdev, "Malformed HCI Event: 0x%2.2x", 4960 HCI_EV_INQUIRY_RESULT_WITH_RSSI); 4961 goto unlock; 4962 } 4963 4964 bacpy(&data.bdaddr, &info->bdaddr); 4965 data.pscan_rep_mode = info->pscan_rep_mode; 4966 data.pscan_period_mode = info->pscan_period_mode; 4967 data.pscan_mode = 0x00; 4968 memcpy(data.dev_class, info->dev_class, 3); 4969 data.clock_offset = info->clock_offset; 4970 data.rssi = info->rssi; 4971 data.ssp_mode = 0x00; 4972 4973 flags = hci_inquiry_cache_update(hdev, &data, false); 4974 4975 mgmt_device_found(hdev, &info->bdaddr, ACL_LINK, 0x00, 4976 info->dev_class, info->rssi, 4977 flags, NULL, 0, NULL, 0, 0); 4978 } 4979 } else { 4980 bt_dev_err(hdev, "Malformed HCI Event: 0x%2.2x", 4981 HCI_EV_INQUIRY_RESULT_WITH_RSSI); 4982 } 4983 unlock: 4984 hci_dev_unlock(hdev); 4985 } 4986 4987 static void hci_remote_ext_features_evt(struct hci_dev *hdev, void *data, 4988 struct sk_buff *skb) 4989 { 4990 struct hci_ev_remote_ext_features *ev = data; 4991 struct hci_conn *conn; 4992 4993 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 4994 4995 hci_dev_lock(hdev); 4996 4997 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle)); 4998 if (!conn) 4999 goto unlock; 5000 5001 if (ev->page < HCI_MAX_PAGES) 5002 memcpy(conn->features[ev->page], ev->features, 8); 5003 5004 if (!ev->status && ev->page == 0x01) { 5005 struct inquiry_entry *ie; 5006 5007 ie = hci_inquiry_cache_lookup(hdev, &conn->dst); 5008 if (ie) 5009 ie->data.ssp_mode = (ev->features[0] & LMP_HOST_SSP); 5010 5011 if (ev->features[0] & LMP_HOST_SSP) { 5012 set_bit(HCI_CONN_SSP_ENABLED, &conn->flags); 5013 } else { 5014 /* It is mandatory by the Bluetooth specification that 5015 * Extended Inquiry Results are only used when Secure 5016 * Simple Pairing is enabled, but some devices violate 5017 * this. 5018 * 5019 * To make these devices work, the internal SSP 5020 * enabled flag needs to be cleared if the remote host 5021 * features do not indicate SSP support */ 5022 clear_bit(HCI_CONN_SSP_ENABLED, &conn->flags); 5023 } 5024 5025 if (ev->features[0] & LMP_HOST_SC) 5026 set_bit(HCI_CONN_SC_ENABLED, &conn->flags); 5027 } 5028 5029 if (conn->state != BT_CONFIG) 5030 goto unlock; 5031 5032 if (!ev->status && !test_bit(HCI_CONN_MGMT_CONNECTED, &conn->flags)) { 5033 struct hci_cp_remote_name_req cp; 5034 memset(&cp, 0, sizeof(cp)); 5035 bacpy(&cp.bdaddr, &conn->dst); 5036 cp.pscan_rep_mode = 0x02; 5037 hci_send_cmd(hdev, HCI_OP_REMOTE_NAME_REQ, sizeof(cp), &cp); 5038 } else { 5039 mgmt_device_connected(hdev, conn, NULL, 0); 5040 } 5041 5042 if (!hci_outgoing_auth_needed(hdev, conn)) { 5043 conn->state = BT_CONNECTED; 5044 hci_connect_cfm(conn, ev->status); 5045 hci_conn_drop(conn); 5046 } 5047 5048 unlock: 5049 hci_dev_unlock(hdev); 5050 } 5051 5052 static void hci_sync_conn_complete_evt(struct hci_dev *hdev, void *data, 5053 struct sk_buff *skb) 5054 { 5055 struct hci_ev_sync_conn_complete *ev = data; 5056 struct hci_conn *conn; 5057 u8 status = ev->status; 5058 5059 switch (ev->link_type) { 5060 case SCO_LINK: 5061 case ESCO_LINK: 5062 break; 5063 default: 5064 /* As per Core 5.3 Vol 4 Part E 7.7.35 (p.2219), Link_Type 5065 * for HCI_Synchronous_Connection_Complete is limited to 5066 * either SCO or eSCO 5067 */ 5068 bt_dev_err(hdev, "Ignoring connect complete event for invalid link type"); 5069 return; 5070 } 5071 5072 bt_dev_dbg(hdev, "status 0x%2.2x", status); 5073 5074 hci_dev_lock(hdev); 5075 5076 conn = hci_conn_hash_lookup_ba(hdev, ev->link_type, &ev->bdaddr); 5077 if (!conn) { 5078 if (ev->link_type == ESCO_LINK) 5079 goto unlock; 5080 5081 /* When the link type in the event indicates SCO connection 5082 * and lookup of the connection object fails, then check 5083 * if an eSCO connection object exists. 5084 * 5085 * The core limits the synchronous connections to either 5086 * SCO or eSCO. The eSCO connection is preferred and tried 5087 * to be setup first and until successfully established, 5088 * the link type will be hinted as eSCO. 5089 */ 5090 conn = hci_conn_hash_lookup_ba(hdev, ESCO_LINK, &ev->bdaddr); 5091 if (!conn) 5092 goto unlock; 5093 } 5094 5095 /* The HCI_Synchronous_Connection_Complete event is only sent once per connection. 5096 * Processing it more than once per connection can corrupt kernel memory. 5097 * 5098 * As the connection handle is set here for the first time, it indicates 5099 * whether the connection is already set up. 5100 */ 5101 if (!HCI_CONN_HANDLE_UNSET(conn->handle)) { 5102 bt_dev_err(hdev, "Ignoring HCI_Sync_Conn_Complete event for existing connection"); 5103 goto unlock; 5104 } 5105 5106 switch (status) { 5107 case 0x00: 5108 status = hci_conn_set_handle(conn, __le16_to_cpu(ev->handle)); 5109 if (status) { 5110 conn->state = BT_CLOSED; 5111 break; 5112 } 5113 5114 conn->state = BT_CONNECTED; 5115 conn->type = ev->link_type; 5116 5117 hci_debugfs_create_conn(conn); 5118 hci_conn_add_sysfs(conn); 5119 break; 5120 5121 case 0x10: /* Connection Accept Timeout */ 5122 case 0x0d: /* Connection Rejected due to Limited Resources */ 5123 case 0x11: /* Unsupported Feature or Parameter Value */ 5124 case 0x1c: /* SCO interval rejected */ 5125 case 0x1a: /* Unsupported Remote Feature */ 5126 case 0x1e: /* Invalid LMP Parameters */ 5127 case 0x1f: /* Unspecified error */ 5128 case 0x20: /* Unsupported LMP Parameter value */ 5129 if (conn->out) { 5130 conn->pkt_type = (hdev->esco_type & SCO_ESCO_MASK) | 5131 (hdev->esco_type & EDR_ESCO_MASK); 5132 if (hci_setup_sync(conn, conn->parent->handle)) 5133 goto unlock; 5134 } 5135 fallthrough; 5136 5137 default: 5138 conn->state = BT_CLOSED; 5139 break; 5140 } 5141 5142 bt_dev_dbg(hdev, "SCO connected with air mode: %02x", ev->air_mode); 5143 /* Notify only in case of SCO over HCI transport data path which 5144 * is zero and non-zero value shall be non-HCI transport data path 5145 */ 5146 if (conn->codec.data_path == 0 && hdev->notify) { 5147 switch (ev->air_mode) { 5148 case 0x02: 5149 hdev->notify(hdev, HCI_NOTIFY_ENABLE_SCO_CVSD); 5150 break; 5151 case 0x03: 5152 hdev->notify(hdev, HCI_NOTIFY_ENABLE_SCO_TRANSP); 5153 break; 5154 } 5155 } 5156 5157 hci_connect_cfm(conn, status); 5158 if (status) 5159 hci_conn_del(conn); 5160 5161 unlock: 5162 hci_dev_unlock(hdev); 5163 } 5164 5165 static inline size_t eir_get_length(u8 *eir, size_t eir_len) 5166 { 5167 size_t parsed = 0; 5168 5169 while (parsed < eir_len) { 5170 u8 field_len = eir[0]; 5171 5172 if (field_len == 0) 5173 return parsed; 5174 5175 parsed += field_len + 1; 5176 eir += field_len + 1; 5177 } 5178 5179 return eir_len; 5180 } 5181 5182 static void hci_extended_inquiry_result_evt(struct hci_dev *hdev, void *edata, 5183 struct sk_buff *skb) 5184 { 5185 struct hci_ev_ext_inquiry_result *ev = edata; 5186 struct inquiry_data data; 5187 size_t eir_len; 5188 int i; 5189 5190 if (!hci_ev_skb_pull(hdev, skb, HCI_EV_EXTENDED_INQUIRY_RESULT, 5191 flex_array_size(ev, info, ev->num))) 5192 return; 5193 5194 bt_dev_dbg(hdev, "num %d", ev->num); 5195 5196 if (!ev->num) 5197 return; 5198 5199 if (hci_dev_test_flag(hdev, HCI_PERIODIC_INQ)) 5200 return; 5201 5202 hci_dev_lock(hdev); 5203 5204 for (i = 0; i < ev->num; i++) { 5205 struct extended_inquiry_info *info = &ev->info[i]; 5206 u32 flags; 5207 bool name_known; 5208 5209 bacpy(&data.bdaddr, &info->bdaddr); 5210 data.pscan_rep_mode = info->pscan_rep_mode; 5211 data.pscan_period_mode = info->pscan_period_mode; 5212 data.pscan_mode = 0x00; 5213 memcpy(data.dev_class, info->dev_class, 3); 5214 data.clock_offset = info->clock_offset; 5215 data.rssi = info->rssi; 5216 data.ssp_mode = 0x01; 5217 5218 if (hci_dev_test_flag(hdev, HCI_MGMT)) 5219 name_known = eir_get_data(info->data, 5220 sizeof(info->data), 5221 EIR_NAME_COMPLETE, NULL); 5222 else 5223 name_known = true; 5224 5225 flags = hci_inquiry_cache_update(hdev, &data, name_known); 5226 5227 eir_len = eir_get_length(info->data, sizeof(info->data)); 5228 5229 mgmt_device_found(hdev, &info->bdaddr, ACL_LINK, 0x00, 5230 info->dev_class, info->rssi, 5231 flags, info->data, eir_len, NULL, 0, 0); 5232 } 5233 5234 hci_dev_unlock(hdev); 5235 } 5236 5237 static void hci_key_refresh_complete_evt(struct hci_dev *hdev, void *data, 5238 struct sk_buff *skb) 5239 { 5240 struct hci_ev_key_refresh_complete *ev = data; 5241 struct hci_conn *conn; 5242 5243 bt_dev_dbg(hdev, "status 0x%2.2x handle 0x%4.4x", ev->status, 5244 __le16_to_cpu(ev->handle)); 5245 5246 hci_dev_lock(hdev); 5247 5248 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle)); 5249 if (!conn) 5250 goto unlock; 5251 5252 /* For BR/EDR the necessary steps are taken through the 5253 * auth_complete event. 5254 */ 5255 if (conn->type != LE_LINK) 5256 goto unlock; 5257 5258 if (!ev->status) 5259 conn->sec_level = conn->pending_sec_level; 5260 5261 clear_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags); 5262 5263 if (ev->status && conn->state == BT_CONNECTED) { 5264 hci_disconnect(conn, HCI_ERROR_AUTH_FAILURE); 5265 hci_conn_drop(conn); 5266 goto unlock; 5267 } 5268 5269 if (conn->state == BT_CONFIG) { 5270 if (!ev->status) 5271 conn->state = BT_CONNECTED; 5272 5273 hci_connect_cfm(conn, ev->status); 5274 hci_conn_drop(conn); 5275 } else { 5276 hci_auth_cfm(conn, ev->status); 5277 5278 hci_conn_hold(conn); 5279 conn->disc_timeout = HCI_DISCONN_TIMEOUT; 5280 hci_conn_drop(conn); 5281 } 5282 5283 unlock: 5284 hci_dev_unlock(hdev); 5285 } 5286 5287 static u8 hci_get_auth_req(struct hci_conn *conn) 5288 { 5289 /* If remote requests no-bonding follow that lead */ 5290 if (conn->remote_auth == HCI_AT_NO_BONDING || 5291 conn->remote_auth == HCI_AT_NO_BONDING_MITM) 5292 return conn->remote_auth | (conn->auth_type & 0x01); 5293 5294 /* If both remote and local have enough IO capabilities, require 5295 * MITM protection 5296 */ 5297 if (conn->remote_cap != HCI_IO_NO_INPUT_OUTPUT && 5298 conn->io_capability != HCI_IO_NO_INPUT_OUTPUT) 5299 return conn->remote_auth | 0x01; 5300 5301 /* No MITM protection possible so ignore remote requirement */ 5302 return (conn->remote_auth & ~0x01) | (conn->auth_type & 0x01); 5303 } 5304 5305 static u8 bredr_oob_data_present(struct hci_conn *conn) 5306 { 5307 struct hci_dev *hdev = conn->hdev; 5308 struct oob_data *data; 5309 5310 data = hci_find_remote_oob_data(hdev, &conn->dst, BDADDR_BREDR); 5311 if (!data) 5312 return 0x00; 5313 5314 if (bredr_sc_enabled(hdev)) { 5315 /* When Secure Connections is enabled, then just 5316 * return the present value stored with the OOB 5317 * data. The stored value contains the right present 5318 * information. However it can only be trusted when 5319 * not in Secure Connection Only mode. 5320 */ 5321 if (!hci_dev_test_flag(hdev, HCI_SC_ONLY)) 5322 return data->present; 5323 5324 /* When Secure Connections Only mode is enabled, then 5325 * the P-256 values are required. If they are not 5326 * available, then do not declare that OOB data is 5327 * present. 5328 */ 5329 if (!crypto_memneq(data->rand256, ZERO_KEY, 16) || 5330 !crypto_memneq(data->hash256, ZERO_KEY, 16)) 5331 return 0x00; 5332 5333 return 0x02; 5334 } 5335 5336 /* When Secure Connections is not enabled or actually 5337 * not supported by the hardware, then check that if 5338 * P-192 data values are present. 5339 */ 5340 if (!crypto_memneq(data->rand192, ZERO_KEY, 16) || 5341 !crypto_memneq(data->hash192, ZERO_KEY, 16)) 5342 return 0x00; 5343 5344 return 0x01; 5345 } 5346 5347 static void hci_io_capa_request_evt(struct hci_dev *hdev, void *data, 5348 struct sk_buff *skb) 5349 { 5350 struct hci_ev_io_capa_request *ev = data; 5351 struct hci_conn *conn; 5352 5353 bt_dev_dbg(hdev, ""); 5354 5355 hci_dev_lock(hdev); 5356 5357 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr); 5358 if (!conn || !hci_dev_test_flag(hdev, HCI_SSP_ENABLED)) 5359 goto unlock; 5360 5361 /* Assume remote supports SSP since it has triggered this event */ 5362 set_bit(HCI_CONN_SSP_ENABLED, &conn->flags); 5363 5364 hci_conn_hold(conn); 5365 5366 if (!hci_dev_test_flag(hdev, HCI_MGMT)) 5367 goto unlock; 5368 5369 /* Allow pairing if we're pairable, the initiators of the 5370 * pairing or if the remote is not requesting bonding. 5371 */ 5372 if (hci_dev_test_flag(hdev, HCI_BONDABLE) || 5373 test_bit(HCI_CONN_AUTH_INITIATOR, &conn->flags) || 5374 (conn->remote_auth & ~0x01) == HCI_AT_NO_BONDING) { 5375 struct hci_cp_io_capability_reply cp; 5376 5377 bacpy(&cp.bdaddr, &ev->bdaddr); 5378 /* Change the IO capability from KeyboardDisplay 5379 * to DisplayYesNo as it is not supported by BT spec. */ 5380 cp.capability = (conn->io_capability == 0x04) ? 5381 HCI_IO_DISPLAY_YESNO : conn->io_capability; 5382 5383 /* If we are initiators, there is no remote information yet */ 5384 if (conn->remote_auth == 0xff) { 5385 /* Request MITM protection if our IO caps allow it 5386 * except for the no-bonding case. 5387 */ 5388 if (conn->io_capability != HCI_IO_NO_INPUT_OUTPUT && 5389 conn->auth_type != HCI_AT_NO_BONDING) 5390 conn->auth_type |= 0x01; 5391 } else { 5392 conn->auth_type = hci_get_auth_req(conn); 5393 } 5394 5395 /* If we're not bondable, force one of the non-bondable 5396 * authentication requirement values. 5397 */ 5398 if (!hci_dev_test_flag(hdev, HCI_BONDABLE)) 5399 conn->auth_type &= HCI_AT_NO_BONDING_MITM; 5400 5401 cp.authentication = conn->auth_type; 5402 cp.oob_data = bredr_oob_data_present(conn); 5403 5404 hci_send_cmd(hdev, HCI_OP_IO_CAPABILITY_REPLY, 5405 sizeof(cp), &cp); 5406 } else { 5407 struct hci_cp_io_capability_neg_reply cp; 5408 5409 bacpy(&cp.bdaddr, &ev->bdaddr); 5410 cp.reason = HCI_ERROR_PAIRING_NOT_ALLOWED; 5411 5412 hci_send_cmd(hdev, HCI_OP_IO_CAPABILITY_NEG_REPLY, 5413 sizeof(cp), &cp); 5414 } 5415 5416 unlock: 5417 hci_dev_unlock(hdev); 5418 } 5419 5420 static void hci_io_capa_reply_evt(struct hci_dev *hdev, void *data, 5421 struct sk_buff *skb) 5422 { 5423 struct hci_ev_io_capa_reply *ev = data; 5424 struct hci_conn *conn; 5425 5426 bt_dev_dbg(hdev, ""); 5427 5428 hci_dev_lock(hdev); 5429 5430 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr); 5431 if (!conn) 5432 goto unlock; 5433 5434 conn->remote_cap = ev->capability; 5435 conn->remote_auth = ev->authentication; 5436 5437 unlock: 5438 hci_dev_unlock(hdev); 5439 } 5440 5441 static void hci_user_confirm_request_evt(struct hci_dev *hdev, void *data, 5442 struct sk_buff *skb) 5443 { 5444 struct hci_ev_user_confirm_req *ev = data; 5445 int loc_mitm, rem_mitm, confirm_hint = 0; 5446 struct hci_conn *conn; 5447 5448 bt_dev_dbg(hdev, ""); 5449 5450 hci_dev_lock(hdev); 5451 5452 if (!hci_dev_test_flag(hdev, HCI_MGMT)) 5453 goto unlock; 5454 5455 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr); 5456 if (!conn) 5457 goto unlock; 5458 5459 loc_mitm = (conn->auth_type & 0x01); 5460 rem_mitm = (conn->remote_auth & 0x01); 5461 5462 /* If we require MITM but the remote device can't provide that 5463 * (it has NoInputNoOutput) then reject the confirmation 5464 * request. We check the security level here since it doesn't 5465 * necessarily match conn->auth_type. 5466 */ 5467 if (conn->pending_sec_level > BT_SECURITY_MEDIUM && 5468 conn->remote_cap == HCI_IO_NO_INPUT_OUTPUT) { 5469 bt_dev_dbg(hdev, "Rejecting request: remote device can't provide MITM"); 5470 hci_send_cmd(hdev, HCI_OP_USER_CONFIRM_NEG_REPLY, 5471 sizeof(ev->bdaddr), &ev->bdaddr); 5472 goto unlock; 5473 } 5474 5475 /* If no side requires MITM protection; auto-accept */ 5476 if ((!loc_mitm || conn->remote_cap == HCI_IO_NO_INPUT_OUTPUT) && 5477 (!rem_mitm || conn->io_capability == HCI_IO_NO_INPUT_OUTPUT)) { 5478 5479 /* If we're not the initiators request authorization to 5480 * proceed from user space (mgmt_user_confirm with 5481 * confirm_hint set to 1). The exception is if neither 5482 * side had MITM or if the local IO capability is 5483 * NoInputNoOutput, in which case we do auto-accept 5484 */ 5485 if (!test_bit(HCI_CONN_AUTH_PEND, &conn->flags) && 5486 conn->io_capability != HCI_IO_NO_INPUT_OUTPUT && 5487 (loc_mitm || rem_mitm)) { 5488 bt_dev_dbg(hdev, "Confirming auto-accept as acceptor"); 5489 confirm_hint = 1; 5490 goto confirm; 5491 } 5492 5493 /* If there already exists link key in local host, leave the 5494 * decision to user space since the remote device could be 5495 * legitimate or malicious. 5496 */ 5497 if (hci_find_link_key(hdev, &ev->bdaddr)) { 5498 bt_dev_dbg(hdev, "Local host already has link key"); 5499 confirm_hint = 1; 5500 goto confirm; 5501 } 5502 5503 BT_DBG("Auto-accept of user confirmation with %ums delay", 5504 hdev->auto_accept_delay); 5505 5506 if (hdev->auto_accept_delay > 0) { 5507 int delay = msecs_to_jiffies(hdev->auto_accept_delay); 5508 queue_delayed_work(conn->hdev->workqueue, 5509 &conn->auto_accept_work, delay); 5510 goto unlock; 5511 } 5512 5513 hci_send_cmd(hdev, HCI_OP_USER_CONFIRM_REPLY, 5514 sizeof(ev->bdaddr), &ev->bdaddr); 5515 goto unlock; 5516 } 5517 5518 confirm: 5519 mgmt_user_confirm_request(hdev, &ev->bdaddr, ACL_LINK, 0, 5520 le32_to_cpu(ev->passkey), confirm_hint); 5521 5522 unlock: 5523 hci_dev_unlock(hdev); 5524 } 5525 5526 static void hci_user_passkey_request_evt(struct hci_dev *hdev, void *data, 5527 struct sk_buff *skb) 5528 { 5529 struct hci_ev_user_passkey_req *ev = data; 5530 5531 bt_dev_dbg(hdev, ""); 5532 5533 if (hci_dev_test_flag(hdev, HCI_MGMT)) 5534 mgmt_user_passkey_request(hdev, &ev->bdaddr, ACL_LINK, 0); 5535 } 5536 5537 static void hci_user_passkey_notify_evt(struct hci_dev *hdev, void *data, 5538 struct sk_buff *skb) 5539 { 5540 struct hci_ev_user_passkey_notify *ev = data; 5541 struct hci_conn *conn; 5542 5543 bt_dev_dbg(hdev, ""); 5544 5545 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr); 5546 if (!conn) 5547 return; 5548 5549 conn->passkey_notify = __le32_to_cpu(ev->passkey); 5550 conn->passkey_entered = 0; 5551 5552 if (hci_dev_test_flag(hdev, HCI_MGMT)) 5553 mgmt_user_passkey_notify(hdev, &conn->dst, conn->type, 5554 conn->dst_type, conn->passkey_notify, 5555 conn->passkey_entered); 5556 } 5557 5558 static void hci_keypress_notify_evt(struct hci_dev *hdev, void *data, 5559 struct sk_buff *skb) 5560 { 5561 struct hci_ev_keypress_notify *ev = data; 5562 struct hci_conn *conn; 5563 5564 bt_dev_dbg(hdev, ""); 5565 5566 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr); 5567 if (!conn) 5568 return; 5569 5570 switch (ev->type) { 5571 case HCI_KEYPRESS_STARTED: 5572 conn->passkey_entered = 0; 5573 return; 5574 5575 case HCI_KEYPRESS_ENTERED: 5576 conn->passkey_entered++; 5577 break; 5578 5579 case HCI_KEYPRESS_ERASED: 5580 conn->passkey_entered--; 5581 break; 5582 5583 case HCI_KEYPRESS_CLEARED: 5584 conn->passkey_entered = 0; 5585 break; 5586 5587 case HCI_KEYPRESS_COMPLETED: 5588 return; 5589 } 5590 5591 if (hci_dev_test_flag(hdev, HCI_MGMT)) 5592 mgmt_user_passkey_notify(hdev, &conn->dst, conn->type, 5593 conn->dst_type, conn->passkey_notify, 5594 conn->passkey_entered); 5595 } 5596 5597 static void hci_simple_pair_complete_evt(struct hci_dev *hdev, void *data, 5598 struct sk_buff *skb) 5599 { 5600 struct hci_ev_simple_pair_complete *ev = data; 5601 struct hci_conn *conn; 5602 5603 bt_dev_dbg(hdev, ""); 5604 5605 hci_dev_lock(hdev); 5606 5607 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr); 5608 if (!conn || !hci_conn_ssp_enabled(conn)) 5609 goto unlock; 5610 5611 /* Reset the authentication requirement to unknown */ 5612 conn->remote_auth = 0xff; 5613 5614 /* To avoid duplicate auth_failed events to user space we check 5615 * the HCI_CONN_AUTH_PEND flag which will be set if we 5616 * initiated the authentication. A traditional auth_complete 5617 * event gets always produced as initiator and is also mapped to 5618 * the mgmt_auth_failed event */ 5619 if (!test_bit(HCI_CONN_AUTH_PEND, &conn->flags) && ev->status) 5620 mgmt_auth_failed(conn, ev->status); 5621 5622 hci_conn_drop(conn); 5623 5624 unlock: 5625 hci_dev_unlock(hdev); 5626 } 5627 5628 static void hci_remote_host_features_evt(struct hci_dev *hdev, void *data, 5629 struct sk_buff *skb) 5630 { 5631 struct hci_ev_remote_host_features *ev = data; 5632 struct inquiry_entry *ie; 5633 struct hci_conn *conn; 5634 5635 bt_dev_dbg(hdev, ""); 5636 5637 hci_dev_lock(hdev); 5638 5639 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr); 5640 if (conn) 5641 memcpy(conn->features[1], ev->features, 8); 5642 5643 ie = hci_inquiry_cache_lookup(hdev, &ev->bdaddr); 5644 if (ie) 5645 ie->data.ssp_mode = (ev->features[0] & LMP_HOST_SSP); 5646 5647 hci_dev_unlock(hdev); 5648 } 5649 5650 static void hci_remote_oob_data_request_evt(struct hci_dev *hdev, void *edata, 5651 struct sk_buff *skb) 5652 { 5653 struct hci_ev_remote_oob_data_request *ev = edata; 5654 struct oob_data *data; 5655 5656 bt_dev_dbg(hdev, ""); 5657 5658 hci_dev_lock(hdev); 5659 5660 if (!hci_dev_test_flag(hdev, HCI_MGMT)) 5661 goto unlock; 5662 5663 data = hci_find_remote_oob_data(hdev, &ev->bdaddr, BDADDR_BREDR); 5664 if (!data) { 5665 struct hci_cp_remote_oob_data_neg_reply cp; 5666 5667 bacpy(&cp.bdaddr, &ev->bdaddr); 5668 hci_send_cmd(hdev, HCI_OP_REMOTE_OOB_DATA_NEG_REPLY, 5669 sizeof(cp), &cp); 5670 goto unlock; 5671 } 5672 5673 if (bredr_sc_enabled(hdev)) { 5674 struct hci_cp_remote_oob_ext_data_reply cp; 5675 5676 bacpy(&cp.bdaddr, &ev->bdaddr); 5677 if (hci_dev_test_flag(hdev, HCI_SC_ONLY)) { 5678 memset(cp.hash192, 0, sizeof(cp.hash192)); 5679 memset(cp.rand192, 0, sizeof(cp.rand192)); 5680 } else { 5681 memcpy(cp.hash192, data->hash192, sizeof(cp.hash192)); 5682 memcpy(cp.rand192, data->rand192, sizeof(cp.rand192)); 5683 } 5684 memcpy(cp.hash256, data->hash256, sizeof(cp.hash256)); 5685 memcpy(cp.rand256, data->rand256, sizeof(cp.rand256)); 5686 5687 hci_send_cmd(hdev, HCI_OP_REMOTE_OOB_EXT_DATA_REPLY, 5688 sizeof(cp), &cp); 5689 } else { 5690 struct hci_cp_remote_oob_data_reply cp; 5691 5692 bacpy(&cp.bdaddr, &ev->bdaddr); 5693 memcpy(cp.hash, data->hash192, sizeof(cp.hash)); 5694 memcpy(cp.rand, data->rand192, sizeof(cp.rand)); 5695 5696 hci_send_cmd(hdev, HCI_OP_REMOTE_OOB_DATA_REPLY, 5697 sizeof(cp), &cp); 5698 } 5699 5700 unlock: 5701 hci_dev_unlock(hdev); 5702 } 5703 5704 #if IS_ENABLED(CONFIG_BT_HS) 5705 static void hci_chan_selected_evt(struct hci_dev *hdev, void *data, 5706 struct sk_buff *skb) 5707 { 5708 struct hci_ev_channel_selected *ev = data; 5709 struct hci_conn *hcon; 5710 5711 bt_dev_dbg(hdev, "handle 0x%2.2x", ev->phy_handle); 5712 5713 hcon = hci_conn_hash_lookup_handle(hdev, ev->phy_handle); 5714 if (!hcon) 5715 return; 5716 5717 amp_read_loc_assoc_final_data(hdev, hcon); 5718 } 5719 5720 static void hci_phy_link_complete_evt(struct hci_dev *hdev, void *data, 5721 struct sk_buff *skb) 5722 { 5723 struct hci_ev_phy_link_complete *ev = data; 5724 struct hci_conn *hcon, *bredr_hcon; 5725 5726 bt_dev_dbg(hdev, "handle 0x%2.2x status 0x%2.2x", ev->phy_handle, 5727 ev->status); 5728 5729 hci_dev_lock(hdev); 5730 5731 hcon = hci_conn_hash_lookup_handle(hdev, ev->phy_handle); 5732 if (!hcon) 5733 goto unlock; 5734 5735 if (!hcon->amp_mgr) 5736 goto unlock; 5737 5738 if (ev->status) { 5739 hci_conn_del(hcon); 5740 goto unlock; 5741 } 5742 5743 bredr_hcon = hcon->amp_mgr->l2cap_conn->hcon; 5744 5745 hcon->state = BT_CONNECTED; 5746 bacpy(&hcon->dst, &bredr_hcon->dst); 5747 5748 hci_conn_hold(hcon); 5749 hcon->disc_timeout = HCI_DISCONN_TIMEOUT; 5750 hci_conn_drop(hcon); 5751 5752 hci_debugfs_create_conn(hcon); 5753 hci_conn_add_sysfs(hcon); 5754 5755 amp_physical_cfm(bredr_hcon, hcon); 5756 5757 unlock: 5758 hci_dev_unlock(hdev); 5759 } 5760 5761 static void hci_loglink_complete_evt(struct hci_dev *hdev, void *data, 5762 struct sk_buff *skb) 5763 { 5764 struct hci_ev_logical_link_complete *ev = data; 5765 struct hci_conn *hcon; 5766 struct hci_chan *hchan; 5767 struct amp_mgr *mgr; 5768 5769 bt_dev_dbg(hdev, "log_handle 0x%4.4x phy_handle 0x%2.2x status 0x%2.2x", 5770 le16_to_cpu(ev->handle), ev->phy_handle, ev->status); 5771 5772 hcon = hci_conn_hash_lookup_handle(hdev, ev->phy_handle); 5773 if (!hcon) 5774 return; 5775 5776 /* Create AMP hchan */ 5777 hchan = hci_chan_create(hcon); 5778 if (!hchan) 5779 return; 5780 5781 hchan->handle = le16_to_cpu(ev->handle); 5782 hchan->amp = true; 5783 5784 BT_DBG("hcon %p mgr %p hchan %p", hcon, hcon->amp_mgr, hchan); 5785 5786 mgr = hcon->amp_mgr; 5787 if (mgr && mgr->bredr_chan) { 5788 struct l2cap_chan *bredr_chan = mgr->bredr_chan; 5789 5790 l2cap_chan_lock(bredr_chan); 5791 5792 bredr_chan->conn->mtu = hdev->block_mtu; 5793 l2cap_logical_cfm(bredr_chan, hchan, 0); 5794 hci_conn_hold(hcon); 5795 5796 l2cap_chan_unlock(bredr_chan); 5797 } 5798 } 5799 5800 static void hci_disconn_loglink_complete_evt(struct hci_dev *hdev, void *data, 5801 struct sk_buff *skb) 5802 { 5803 struct hci_ev_disconn_logical_link_complete *ev = data; 5804 struct hci_chan *hchan; 5805 5806 bt_dev_dbg(hdev, "handle 0x%4.4x status 0x%2.2x", 5807 le16_to_cpu(ev->handle), ev->status); 5808 5809 if (ev->status) 5810 return; 5811 5812 hci_dev_lock(hdev); 5813 5814 hchan = hci_chan_lookup_handle(hdev, le16_to_cpu(ev->handle)); 5815 if (!hchan || !hchan->amp) 5816 goto unlock; 5817 5818 amp_destroy_logical_link(hchan, ev->reason); 5819 5820 unlock: 5821 hci_dev_unlock(hdev); 5822 } 5823 5824 static void hci_disconn_phylink_complete_evt(struct hci_dev *hdev, void *data, 5825 struct sk_buff *skb) 5826 { 5827 struct hci_ev_disconn_phy_link_complete *ev = data; 5828 struct hci_conn *hcon; 5829 5830 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 5831 5832 if (ev->status) 5833 return; 5834 5835 hci_dev_lock(hdev); 5836 5837 hcon = hci_conn_hash_lookup_handle(hdev, ev->phy_handle); 5838 if (hcon && hcon->type == AMP_LINK) { 5839 hcon->state = BT_CLOSED; 5840 hci_disconn_cfm(hcon, ev->reason); 5841 hci_conn_del(hcon); 5842 } 5843 5844 hci_dev_unlock(hdev); 5845 } 5846 #endif 5847 5848 static void le_conn_update_addr(struct hci_conn *conn, bdaddr_t *bdaddr, 5849 u8 bdaddr_type, bdaddr_t *local_rpa) 5850 { 5851 if (conn->out) { 5852 conn->dst_type = bdaddr_type; 5853 conn->resp_addr_type = bdaddr_type; 5854 bacpy(&conn->resp_addr, bdaddr); 5855 5856 /* Check if the controller has set a Local RPA then it must be 5857 * used instead or hdev->rpa. 5858 */ 5859 if (local_rpa && bacmp(local_rpa, BDADDR_ANY)) { 5860 conn->init_addr_type = ADDR_LE_DEV_RANDOM; 5861 bacpy(&conn->init_addr, local_rpa); 5862 } else if (hci_dev_test_flag(conn->hdev, HCI_PRIVACY)) { 5863 conn->init_addr_type = ADDR_LE_DEV_RANDOM; 5864 bacpy(&conn->init_addr, &conn->hdev->rpa); 5865 } else { 5866 hci_copy_identity_address(conn->hdev, &conn->init_addr, 5867 &conn->init_addr_type); 5868 } 5869 } else { 5870 conn->resp_addr_type = conn->hdev->adv_addr_type; 5871 /* Check if the controller has set a Local RPA then it must be 5872 * used instead or hdev->rpa. 5873 */ 5874 if (local_rpa && bacmp(local_rpa, BDADDR_ANY)) { 5875 conn->resp_addr_type = ADDR_LE_DEV_RANDOM; 5876 bacpy(&conn->resp_addr, local_rpa); 5877 } else if (conn->hdev->adv_addr_type == ADDR_LE_DEV_RANDOM) { 5878 /* In case of ext adv, resp_addr will be updated in 5879 * Adv Terminated event. 5880 */ 5881 if (!ext_adv_capable(conn->hdev)) 5882 bacpy(&conn->resp_addr, 5883 &conn->hdev->random_addr); 5884 } else { 5885 bacpy(&conn->resp_addr, &conn->hdev->bdaddr); 5886 } 5887 5888 conn->init_addr_type = bdaddr_type; 5889 bacpy(&conn->init_addr, bdaddr); 5890 5891 /* For incoming connections, set the default minimum 5892 * and maximum connection interval. They will be used 5893 * to check if the parameters are in range and if not 5894 * trigger the connection update procedure. 5895 */ 5896 conn->le_conn_min_interval = conn->hdev->le_conn_min_interval; 5897 conn->le_conn_max_interval = conn->hdev->le_conn_max_interval; 5898 } 5899 } 5900 5901 static void le_conn_complete_evt(struct hci_dev *hdev, u8 status, 5902 bdaddr_t *bdaddr, u8 bdaddr_type, 5903 bdaddr_t *local_rpa, u8 role, u16 handle, 5904 u16 interval, u16 latency, 5905 u16 supervision_timeout) 5906 { 5907 struct hci_conn_params *params; 5908 struct hci_conn *conn; 5909 struct smp_irk *irk; 5910 u8 addr_type; 5911 5912 hci_dev_lock(hdev); 5913 5914 /* All controllers implicitly stop advertising in the event of a 5915 * connection, so ensure that the state bit is cleared. 5916 */ 5917 hci_dev_clear_flag(hdev, HCI_LE_ADV); 5918 5919 conn = hci_conn_hash_lookup_ba(hdev, LE_LINK, bdaddr); 5920 if (!conn) { 5921 /* In case of error status and there is no connection pending 5922 * just unlock as there is nothing to cleanup. 5923 */ 5924 if (status) 5925 goto unlock; 5926 5927 conn = hci_conn_add_unset(hdev, LE_LINK, bdaddr, role); 5928 if (!conn) { 5929 bt_dev_err(hdev, "no memory for new connection"); 5930 goto unlock; 5931 } 5932 5933 conn->dst_type = bdaddr_type; 5934 5935 /* If we didn't have a hci_conn object previously 5936 * but we're in central role this must be something 5937 * initiated using an accept list. Since accept list based 5938 * connections are not "first class citizens" we don't 5939 * have full tracking of them. Therefore, we go ahead 5940 * with a "best effort" approach of determining the 5941 * initiator address based on the HCI_PRIVACY flag. 5942 */ 5943 if (conn->out) { 5944 conn->resp_addr_type = bdaddr_type; 5945 bacpy(&conn->resp_addr, bdaddr); 5946 if (hci_dev_test_flag(hdev, HCI_PRIVACY)) { 5947 conn->init_addr_type = ADDR_LE_DEV_RANDOM; 5948 bacpy(&conn->init_addr, &hdev->rpa); 5949 } else { 5950 hci_copy_identity_address(hdev, 5951 &conn->init_addr, 5952 &conn->init_addr_type); 5953 } 5954 } 5955 } else { 5956 cancel_delayed_work(&conn->le_conn_timeout); 5957 } 5958 5959 /* The HCI_LE_Connection_Complete event is only sent once per connection. 5960 * Processing it more than once per connection can corrupt kernel memory. 5961 * 5962 * As the connection handle is set here for the first time, it indicates 5963 * whether the connection is already set up. 5964 */ 5965 if (!HCI_CONN_HANDLE_UNSET(conn->handle)) { 5966 bt_dev_err(hdev, "Ignoring HCI_Connection_Complete for existing connection"); 5967 goto unlock; 5968 } 5969 5970 le_conn_update_addr(conn, bdaddr, bdaddr_type, local_rpa); 5971 5972 /* Lookup the identity address from the stored connection 5973 * address and address type. 5974 * 5975 * When establishing connections to an identity address, the 5976 * connection procedure will store the resolvable random 5977 * address first. Now if it can be converted back into the 5978 * identity address, start using the identity address from 5979 * now on. 5980 */ 5981 irk = hci_get_irk(hdev, &conn->dst, conn->dst_type); 5982 if (irk) { 5983 bacpy(&conn->dst, &irk->bdaddr); 5984 conn->dst_type = irk->addr_type; 5985 } 5986 5987 conn->dst_type = ev_bdaddr_type(hdev, conn->dst_type, NULL); 5988 5989 /* All connection failure handling is taken care of by the 5990 * hci_conn_failed function which is triggered by the HCI 5991 * request completion callbacks used for connecting. 5992 */ 5993 if (status || hci_conn_set_handle(conn, handle)) 5994 goto unlock; 5995 5996 /* Drop the connection if it has been aborted */ 5997 if (test_bit(HCI_CONN_CANCEL, &conn->flags)) { 5998 hci_conn_drop(conn); 5999 goto unlock; 6000 } 6001 6002 if (conn->dst_type == ADDR_LE_DEV_PUBLIC) 6003 addr_type = BDADDR_LE_PUBLIC; 6004 else 6005 addr_type = BDADDR_LE_RANDOM; 6006 6007 /* Drop the connection if the device is blocked */ 6008 if (hci_bdaddr_list_lookup(&hdev->reject_list, &conn->dst, addr_type)) { 6009 hci_conn_drop(conn); 6010 goto unlock; 6011 } 6012 6013 mgmt_device_connected(hdev, conn, NULL, 0); 6014 6015 conn->sec_level = BT_SECURITY_LOW; 6016 conn->state = BT_CONFIG; 6017 6018 /* Store current advertising instance as connection advertising instance 6019 * when sotfware rotation is in use so it can be re-enabled when 6020 * disconnected. 6021 */ 6022 if (!ext_adv_capable(hdev)) 6023 conn->adv_instance = hdev->cur_adv_instance; 6024 6025 conn->le_conn_interval = interval; 6026 conn->le_conn_latency = latency; 6027 conn->le_supv_timeout = supervision_timeout; 6028 6029 hci_debugfs_create_conn(conn); 6030 hci_conn_add_sysfs(conn); 6031 6032 /* The remote features procedure is defined for central 6033 * role only. So only in case of an initiated connection 6034 * request the remote features. 6035 * 6036 * If the local controller supports peripheral-initiated features 6037 * exchange, then requesting the remote features in peripheral 6038 * role is possible. Otherwise just transition into the 6039 * connected state without requesting the remote features. 6040 */ 6041 if (conn->out || 6042 (hdev->le_features[0] & HCI_LE_PERIPHERAL_FEATURES)) { 6043 struct hci_cp_le_read_remote_features cp; 6044 6045 cp.handle = __cpu_to_le16(conn->handle); 6046 6047 hci_send_cmd(hdev, HCI_OP_LE_READ_REMOTE_FEATURES, 6048 sizeof(cp), &cp); 6049 6050 hci_conn_hold(conn); 6051 } else { 6052 conn->state = BT_CONNECTED; 6053 hci_connect_cfm(conn, status); 6054 } 6055 6056 params = hci_pend_le_action_lookup(&hdev->pend_le_conns, &conn->dst, 6057 conn->dst_type); 6058 if (params) { 6059 hci_pend_le_list_del_init(params); 6060 if (params->conn) { 6061 hci_conn_drop(params->conn); 6062 hci_conn_put(params->conn); 6063 params->conn = NULL; 6064 } 6065 } 6066 6067 unlock: 6068 hci_update_passive_scan(hdev); 6069 hci_dev_unlock(hdev); 6070 } 6071 6072 static void hci_le_conn_complete_evt(struct hci_dev *hdev, void *data, 6073 struct sk_buff *skb) 6074 { 6075 struct hci_ev_le_conn_complete *ev = data; 6076 6077 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 6078 6079 le_conn_complete_evt(hdev, ev->status, &ev->bdaddr, ev->bdaddr_type, 6080 NULL, ev->role, le16_to_cpu(ev->handle), 6081 le16_to_cpu(ev->interval), 6082 le16_to_cpu(ev->latency), 6083 le16_to_cpu(ev->supervision_timeout)); 6084 } 6085 6086 static void hci_le_enh_conn_complete_evt(struct hci_dev *hdev, void *data, 6087 struct sk_buff *skb) 6088 { 6089 struct hci_ev_le_enh_conn_complete *ev = data; 6090 6091 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 6092 6093 le_conn_complete_evt(hdev, ev->status, &ev->bdaddr, ev->bdaddr_type, 6094 &ev->local_rpa, ev->role, le16_to_cpu(ev->handle), 6095 le16_to_cpu(ev->interval), 6096 le16_to_cpu(ev->latency), 6097 le16_to_cpu(ev->supervision_timeout)); 6098 } 6099 6100 static void hci_le_ext_adv_term_evt(struct hci_dev *hdev, void *data, 6101 struct sk_buff *skb) 6102 { 6103 struct hci_evt_le_ext_adv_set_term *ev = data; 6104 struct hci_conn *conn; 6105 struct adv_info *adv, *n; 6106 6107 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 6108 6109 /* The Bluetooth Core 5.3 specification clearly states that this event 6110 * shall not be sent when the Host disables the advertising set. So in 6111 * case of HCI_ERROR_CANCELLED_BY_HOST, just ignore the event. 6112 * 6113 * When the Host disables an advertising set, all cleanup is done via 6114 * its command callback and not needed to be duplicated here. 6115 */ 6116 if (ev->status == HCI_ERROR_CANCELLED_BY_HOST) { 6117 bt_dev_warn_ratelimited(hdev, "Unexpected advertising set terminated event"); 6118 return; 6119 } 6120 6121 hci_dev_lock(hdev); 6122 6123 adv = hci_find_adv_instance(hdev, ev->handle); 6124 6125 if (ev->status) { 6126 if (!adv) 6127 goto unlock; 6128 6129 /* Remove advertising as it has been terminated */ 6130 hci_remove_adv_instance(hdev, ev->handle); 6131 mgmt_advertising_removed(NULL, hdev, ev->handle); 6132 6133 list_for_each_entry_safe(adv, n, &hdev->adv_instances, list) { 6134 if (adv->enabled) 6135 goto unlock; 6136 } 6137 6138 /* We are no longer advertising, clear HCI_LE_ADV */ 6139 hci_dev_clear_flag(hdev, HCI_LE_ADV); 6140 goto unlock; 6141 } 6142 6143 if (adv) 6144 adv->enabled = false; 6145 6146 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->conn_handle)); 6147 if (conn) { 6148 /* Store handle in the connection so the correct advertising 6149 * instance can be re-enabled when disconnected. 6150 */ 6151 conn->adv_instance = ev->handle; 6152 6153 if (hdev->adv_addr_type != ADDR_LE_DEV_RANDOM || 6154 bacmp(&conn->resp_addr, BDADDR_ANY)) 6155 goto unlock; 6156 6157 if (!ev->handle) { 6158 bacpy(&conn->resp_addr, &hdev->random_addr); 6159 goto unlock; 6160 } 6161 6162 if (adv) 6163 bacpy(&conn->resp_addr, &adv->random_addr); 6164 } 6165 6166 unlock: 6167 hci_dev_unlock(hdev); 6168 } 6169 6170 static void hci_le_conn_update_complete_evt(struct hci_dev *hdev, void *data, 6171 struct sk_buff *skb) 6172 { 6173 struct hci_ev_le_conn_update_complete *ev = data; 6174 struct hci_conn *conn; 6175 6176 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 6177 6178 if (ev->status) 6179 return; 6180 6181 hci_dev_lock(hdev); 6182 6183 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle)); 6184 if (conn) { 6185 conn->le_conn_interval = le16_to_cpu(ev->interval); 6186 conn->le_conn_latency = le16_to_cpu(ev->latency); 6187 conn->le_supv_timeout = le16_to_cpu(ev->supervision_timeout); 6188 } 6189 6190 hci_dev_unlock(hdev); 6191 } 6192 6193 /* This function requires the caller holds hdev->lock */ 6194 static struct hci_conn *check_pending_le_conn(struct hci_dev *hdev, 6195 bdaddr_t *addr, 6196 u8 addr_type, bool addr_resolved, 6197 u8 adv_type) 6198 { 6199 struct hci_conn *conn; 6200 struct hci_conn_params *params; 6201 6202 /* If the event is not connectable don't proceed further */ 6203 if (adv_type != LE_ADV_IND && adv_type != LE_ADV_DIRECT_IND) 6204 return NULL; 6205 6206 /* Ignore if the device is blocked or hdev is suspended */ 6207 if (hci_bdaddr_list_lookup(&hdev->reject_list, addr, addr_type) || 6208 hdev->suspended) 6209 return NULL; 6210 6211 /* Most controller will fail if we try to create new connections 6212 * while we have an existing one in peripheral role. 6213 */ 6214 if (hdev->conn_hash.le_num_peripheral > 0 && 6215 (!test_bit(HCI_QUIRK_VALID_LE_STATES, &hdev->quirks) || 6216 !(hdev->le_states[3] & 0x10))) 6217 return NULL; 6218 6219 /* If we're not connectable only connect devices that we have in 6220 * our pend_le_conns list. 6221 */ 6222 params = hci_pend_le_action_lookup(&hdev->pend_le_conns, addr, 6223 addr_type); 6224 if (!params) 6225 return NULL; 6226 6227 if (!params->explicit_connect) { 6228 switch (params->auto_connect) { 6229 case HCI_AUTO_CONN_DIRECT: 6230 /* Only devices advertising with ADV_DIRECT_IND are 6231 * triggering a connection attempt. This is allowing 6232 * incoming connections from peripheral devices. 6233 */ 6234 if (adv_type != LE_ADV_DIRECT_IND) 6235 return NULL; 6236 break; 6237 case HCI_AUTO_CONN_ALWAYS: 6238 /* Devices advertising with ADV_IND or ADV_DIRECT_IND 6239 * are triggering a connection attempt. This means 6240 * that incoming connections from peripheral device are 6241 * accepted and also outgoing connections to peripheral 6242 * devices are established when found. 6243 */ 6244 break; 6245 default: 6246 return NULL; 6247 } 6248 } 6249 6250 conn = hci_connect_le(hdev, addr, addr_type, addr_resolved, 6251 BT_SECURITY_LOW, hdev->def_le_autoconnect_timeout, 6252 HCI_ROLE_MASTER); 6253 if (!IS_ERR(conn)) { 6254 /* If HCI_AUTO_CONN_EXPLICIT is set, conn is already owned 6255 * by higher layer that tried to connect, if no then 6256 * store the pointer since we don't really have any 6257 * other owner of the object besides the params that 6258 * triggered it. This way we can abort the connection if 6259 * the parameters get removed and keep the reference 6260 * count consistent once the connection is established. 6261 */ 6262 6263 if (!params->explicit_connect) 6264 params->conn = hci_conn_get(conn); 6265 6266 return conn; 6267 } 6268 6269 switch (PTR_ERR(conn)) { 6270 case -EBUSY: 6271 /* If hci_connect() returns -EBUSY it means there is already 6272 * an LE connection attempt going on. Since controllers don't 6273 * support more than one connection attempt at the time, we 6274 * don't consider this an error case. 6275 */ 6276 break; 6277 default: 6278 BT_DBG("Failed to connect: err %ld", PTR_ERR(conn)); 6279 return NULL; 6280 } 6281 6282 return NULL; 6283 } 6284 6285 static void process_adv_report(struct hci_dev *hdev, u8 type, bdaddr_t *bdaddr, 6286 u8 bdaddr_type, bdaddr_t *direct_addr, 6287 u8 direct_addr_type, s8 rssi, u8 *data, u8 len, 6288 bool ext_adv, bool ctl_time, u64 instant) 6289 { 6290 struct discovery_state *d = &hdev->discovery; 6291 struct smp_irk *irk; 6292 struct hci_conn *conn; 6293 bool match, bdaddr_resolved; 6294 u32 flags; 6295 u8 *ptr; 6296 6297 switch (type) { 6298 case LE_ADV_IND: 6299 case LE_ADV_DIRECT_IND: 6300 case LE_ADV_SCAN_IND: 6301 case LE_ADV_NONCONN_IND: 6302 case LE_ADV_SCAN_RSP: 6303 break; 6304 default: 6305 bt_dev_err_ratelimited(hdev, "unknown advertising packet " 6306 "type: 0x%02x", type); 6307 return; 6308 } 6309 6310 if (len > max_adv_len(hdev)) { 6311 bt_dev_err_ratelimited(hdev, 6312 "adv larger than maximum supported"); 6313 return; 6314 } 6315 6316 /* Find the end of the data in case the report contains padded zero 6317 * bytes at the end causing an invalid length value. 6318 * 6319 * When data is NULL, len is 0 so there is no need for extra ptr 6320 * check as 'ptr < data + 0' is already false in such case. 6321 */ 6322 for (ptr = data; ptr < data + len && *ptr; ptr += *ptr + 1) { 6323 if (ptr + 1 + *ptr > data + len) 6324 break; 6325 } 6326 6327 /* Adjust for actual length. This handles the case when remote 6328 * device is advertising with incorrect data length. 6329 */ 6330 len = ptr - data; 6331 6332 /* If the direct address is present, then this report is from 6333 * a LE Direct Advertising Report event. In that case it is 6334 * important to see if the address is matching the local 6335 * controller address. 6336 */ 6337 if (!hci_dev_test_flag(hdev, HCI_MESH) && direct_addr) { 6338 direct_addr_type = ev_bdaddr_type(hdev, direct_addr_type, 6339 &bdaddr_resolved); 6340 6341 /* Only resolvable random addresses are valid for these 6342 * kind of reports and others can be ignored. 6343 */ 6344 if (!hci_bdaddr_is_rpa(direct_addr, direct_addr_type)) 6345 return; 6346 6347 /* If the controller is not using resolvable random 6348 * addresses, then this report can be ignored. 6349 */ 6350 if (!hci_dev_test_flag(hdev, HCI_PRIVACY)) 6351 return; 6352 6353 /* If the local IRK of the controller does not match 6354 * with the resolvable random address provided, then 6355 * this report can be ignored. 6356 */ 6357 if (!smp_irk_matches(hdev, hdev->irk, direct_addr)) 6358 return; 6359 } 6360 6361 /* Check if we need to convert to identity address */ 6362 irk = hci_get_irk(hdev, bdaddr, bdaddr_type); 6363 if (irk) { 6364 bdaddr = &irk->bdaddr; 6365 bdaddr_type = irk->addr_type; 6366 } 6367 6368 bdaddr_type = ev_bdaddr_type(hdev, bdaddr_type, &bdaddr_resolved); 6369 6370 /* Check if we have been requested to connect to this device. 6371 * 6372 * direct_addr is set only for directed advertising reports (it is NULL 6373 * for advertising reports) and is already verified to be RPA above. 6374 */ 6375 conn = check_pending_le_conn(hdev, bdaddr, bdaddr_type, bdaddr_resolved, 6376 type); 6377 if (!ext_adv && conn && type == LE_ADV_IND && 6378 len <= max_adv_len(hdev)) { 6379 /* Store report for later inclusion by 6380 * mgmt_device_connected 6381 */ 6382 memcpy(conn->le_adv_data, data, len); 6383 conn->le_adv_data_len = len; 6384 } 6385 6386 if (type == LE_ADV_NONCONN_IND || type == LE_ADV_SCAN_IND) 6387 flags = MGMT_DEV_FOUND_NOT_CONNECTABLE; 6388 else 6389 flags = 0; 6390 6391 /* All scan results should be sent up for Mesh systems */ 6392 if (hci_dev_test_flag(hdev, HCI_MESH)) { 6393 mgmt_device_found(hdev, bdaddr, LE_LINK, bdaddr_type, NULL, 6394 rssi, flags, data, len, NULL, 0, instant); 6395 return; 6396 } 6397 6398 /* Passive scanning shouldn't trigger any device found events, 6399 * except for devices marked as CONN_REPORT for which we do send 6400 * device found events, or advertisement monitoring requested. 6401 */ 6402 if (hdev->le_scan_type == LE_SCAN_PASSIVE) { 6403 if (type == LE_ADV_DIRECT_IND) 6404 return; 6405 6406 if (!hci_pend_le_action_lookup(&hdev->pend_le_reports, 6407 bdaddr, bdaddr_type) && 6408 idr_is_empty(&hdev->adv_monitors_idr)) 6409 return; 6410 6411 mgmt_device_found(hdev, bdaddr, LE_LINK, bdaddr_type, NULL, 6412 rssi, flags, data, len, NULL, 0, 0); 6413 return; 6414 } 6415 6416 /* When receiving a scan response, then there is no way to 6417 * know if the remote device is connectable or not. However 6418 * since scan responses are merged with a previously seen 6419 * advertising report, the flags field from that report 6420 * will be used. 6421 * 6422 * In the unlikely case that a controller just sends a scan 6423 * response event that doesn't match the pending report, then 6424 * it is marked as a standalone SCAN_RSP. 6425 */ 6426 if (type == LE_ADV_SCAN_RSP) 6427 flags = MGMT_DEV_FOUND_SCAN_RSP; 6428 6429 /* If there's nothing pending either store the data from this 6430 * event or send an immediate device found event if the data 6431 * should not be stored for later. 6432 */ 6433 if (!ext_adv && !has_pending_adv_report(hdev)) { 6434 /* If the report will trigger a SCAN_REQ store it for 6435 * later merging. 6436 */ 6437 if (type == LE_ADV_IND || type == LE_ADV_SCAN_IND) { 6438 store_pending_adv_report(hdev, bdaddr, bdaddr_type, 6439 rssi, flags, data, len); 6440 return; 6441 } 6442 6443 mgmt_device_found(hdev, bdaddr, LE_LINK, bdaddr_type, NULL, 6444 rssi, flags, data, len, NULL, 0, 0); 6445 return; 6446 } 6447 6448 /* Check if the pending report is for the same device as the new one */ 6449 match = (!bacmp(bdaddr, &d->last_adv_addr) && 6450 bdaddr_type == d->last_adv_addr_type); 6451 6452 /* If the pending data doesn't match this report or this isn't a 6453 * scan response (e.g. we got a duplicate ADV_IND) then force 6454 * sending of the pending data. 6455 */ 6456 if (type != LE_ADV_SCAN_RSP || !match) { 6457 /* Send out whatever is in the cache, but skip duplicates */ 6458 if (!match) 6459 mgmt_device_found(hdev, &d->last_adv_addr, LE_LINK, 6460 d->last_adv_addr_type, NULL, 6461 d->last_adv_rssi, d->last_adv_flags, 6462 d->last_adv_data, 6463 d->last_adv_data_len, NULL, 0, 0); 6464 6465 /* If the new report will trigger a SCAN_REQ store it for 6466 * later merging. 6467 */ 6468 if (!ext_adv && (type == LE_ADV_IND || 6469 type == LE_ADV_SCAN_IND)) { 6470 store_pending_adv_report(hdev, bdaddr, bdaddr_type, 6471 rssi, flags, data, len); 6472 return; 6473 } 6474 6475 /* The advertising reports cannot be merged, so clear 6476 * the pending report and send out a device found event. 6477 */ 6478 clear_pending_adv_report(hdev); 6479 mgmt_device_found(hdev, bdaddr, LE_LINK, bdaddr_type, NULL, 6480 rssi, flags, data, len, NULL, 0, 0); 6481 return; 6482 } 6483 6484 /* If we get here we've got a pending ADV_IND or ADV_SCAN_IND and 6485 * the new event is a SCAN_RSP. We can therefore proceed with 6486 * sending a merged device found event. 6487 */ 6488 mgmt_device_found(hdev, &d->last_adv_addr, LE_LINK, 6489 d->last_adv_addr_type, NULL, rssi, d->last_adv_flags, 6490 d->last_adv_data, d->last_adv_data_len, data, len, 0); 6491 clear_pending_adv_report(hdev); 6492 } 6493 6494 static void hci_le_adv_report_evt(struct hci_dev *hdev, void *data, 6495 struct sk_buff *skb) 6496 { 6497 struct hci_ev_le_advertising_report *ev = data; 6498 u64 instant = jiffies; 6499 6500 if (!ev->num) 6501 return; 6502 6503 hci_dev_lock(hdev); 6504 6505 while (ev->num--) { 6506 struct hci_ev_le_advertising_info *info; 6507 s8 rssi; 6508 6509 info = hci_le_ev_skb_pull(hdev, skb, 6510 HCI_EV_LE_ADVERTISING_REPORT, 6511 sizeof(*info)); 6512 if (!info) 6513 break; 6514 6515 if (!hci_le_ev_skb_pull(hdev, skb, HCI_EV_LE_ADVERTISING_REPORT, 6516 info->length + 1)) 6517 break; 6518 6519 if (info->length <= max_adv_len(hdev)) { 6520 rssi = info->data[info->length]; 6521 process_adv_report(hdev, info->type, &info->bdaddr, 6522 info->bdaddr_type, NULL, 0, rssi, 6523 info->data, info->length, false, 6524 false, instant); 6525 } else { 6526 bt_dev_err(hdev, "Dropping invalid advertising data"); 6527 } 6528 } 6529 6530 hci_dev_unlock(hdev); 6531 } 6532 6533 static u8 ext_evt_type_to_legacy(struct hci_dev *hdev, u16 evt_type) 6534 { 6535 if (evt_type & LE_EXT_ADV_LEGACY_PDU) { 6536 switch (evt_type) { 6537 case LE_LEGACY_ADV_IND: 6538 return LE_ADV_IND; 6539 case LE_LEGACY_ADV_DIRECT_IND: 6540 return LE_ADV_DIRECT_IND; 6541 case LE_LEGACY_ADV_SCAN_IND: 6542 return LE_ADV_SCAN_IND; 6543 case LE_LEGACY_NONCONN_IND: 6544 return LE_ADV_NONCONN_IND; 6545 case LE_LEGACY_SCAN_RSP_ADV: 6546 case LE_LEGACY_SCAN_RSP_ADV_SCAN: 6547 return LE_ADV_SCAN_RSP; 6548 } 6549 6550 goto invalid; 6551 } 6552 6553 if (evt_type & LE_EXT_ADV_CONN_IND) { 6554 if (evt_type & LE_EXT_ADV_DIRECT_IND) 6555 return LE_ADV_DIRECT_IND; 6556 6557 return LE_ADV_IND; 6558 } 6559 6560 if (evt_type & LE_EXT_ADV_SCAN_RSP) 6561 return LE_ADV_SCAN_RSP; 6562 6563 if (evt_type & LE_EXT_ADV_SCAN_IND) 6564 return LE_ADV_SCAN_IND; 6565 6566 if (evt_type == LE_EXT_ADV_NON_CONN_IND || 6567 evt_type & LE_EXT_ADV_DIRECT_IND) 6568 return LE_ADV_NONCONN_IND; 6569 6570 invalid: 6571 bt_dev_err_ratelimited(hdev, "Unknown advertising packet type: 0x%02x", 6572 evt_type); 6573 6574 return LE_ADV_INVALID; 6575 } 6576 6577 static void hci_le_ext_adv_report_evt(struct hci_dev *hdev, void *data, 6578 struct sk_buff *skb) 6579 { 6580 struct hci_ev_le_ext_adv_report *ev = data; 6581 u64 instant = jiffies; 6582 6583 if (!ev->num) 6584 return; 6585 6586 hci_dev_lock(hdev); 6587 6588 while (ev->num--) { 6589 struct hci_ev_le_ext_adv_info *info; 6590 u8 legacy_evt_type; 6591 u16 evt_type; 6592 6593 info = hci_le_ev_skb_pull(hdev, skb, HCI_EV_LE_EXT_ADV_REPORT, 6594 sizeof(*info)); 6595 if (!info) 6596 break; 6597 6598 if (!hci_le_ev_skb_pull(hdev, skb, HCI_EV_LE_EXT_ADV_REPORT, 6599 info->length)) 6600 break; 6601 6602 evt_type = __le16_to_cpu(info->type) & LE_EXT_ADV_EVT_TYPE_MASK; 6603 legacy_evt_type = ext_evt_type_to_legacy(hdev, evt_type); 6604 if (legacy_evt_type != LE_ADV_INVALID) { 6605 process_adv_report(hdev, legacy_evt_type, &info->bdaddr, 6606 info->bdaddr_type, NULL, 0, 6607 info->rssi, info->data, info->length, 6608 !(evt_type & LE_EXT_ADV_LEGACY_PDU), 6609 false, instant); 6610 } 6611 } 6612 6613 hci_dev_unlock(hdev); 6614 } 6615 6616 static int hci_le_pa_term_sync(struct hci_dev *hdev, __le16 handle) 6617 { 6618 struct hci_cp_le_pa_term_sync cp; 6619 6620 memset(&cp, 0, sizeof(cp)); 6621 cp.handle = handle; 6622 6623 return hci_send_cmd(hdev, HCI_OP_LE_PA_TERM_SYNC, sizeof(cp), &cp); 6624 } 6625 6626 static void hci_le_pa_sync_estabilished_evt(struct hci_dev *hdev, void *data, 6627 struct sk_buff *skb) 6628 { 6629 struct hci_ev_le_pa_sync_established *ev = data; 6630 int mask = hdev->link_mode; 6631 __u8 flags = 0; 6632 struct hci_conn *pa_sync; 6633 6634 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 6635 6636 hci_dev_lock(hdev); 6637 6638 hci_dev_clear_flag(hdev, HCI_PA_SYNC); 6639 6640 mask |= hci_proto_connect_ind(hdev, &ev->bdaddr, ISO_LINK, &flags); 6641 if (!(mask & HCI_LM_ACCEPT)) { 6642 hci_le_pa_term_sync(hdev, ev->handle); 6643 goto unlock; 6644 } 6645 6646 if (!(flags & HCI_PROTO_DEFER)) 6647 goto unlock; 6648 6649 if (ev->status) { 6650 /* Add connection to indicate the failed PA sync event */ 6651 pa_sync = hci_conn_add_unset(hdev, ISO_LINK, BDADDR_ANY, 6652 HCI_ROLE_SLAVE); 6653 6654 if (!pa_sync) 6655 goto unlock; 6656 6657 set_bit(HCI_CONN_PA_SYNC_FAILED, &pa_sync->flags); 6658 6659 /* Notify iso layer */ 6660 hci_connect_cfm(pa_sync, ev->status); 6661 } 6662 6663 unlock: 6664 hci_dev_unlock(hdev); 6665 } 6666 6667 static void hci_le_per_adv_report_evt(struct hci_dev *hdev, void *data, 6668 struct sk_buff *skb) 6669 { 6670 struct hci_ev_le_per_adv_report *ev = data; 6671 int mask = hdev->link_mode; 6672 __u8 flags = 0; 6673 6674 bt_dev_dbg(hdev, "sync_handle 0x%4.4x", le16_to_cpu(ev->sync_handle)); 6675 6676 hci_dev_lock(hdev); 6677 6678 mask |= hci_proto_connect_ind(hdev, BDADDR_ANY, ISO_LINK, &flags); 6679 if (!(mask & HCI_LM_ACCEPT)) 6680 hci_le_pa_term_sync(hdev, ev->sync_handle); 6681 6682 hci_dev_unlock(hdev); 6683 } 6684 6685 static void hci_le_remote_feat_complete_evt(struct hci_dev *hdev, void *data, 6686 struct sk_buff *skb) 6687 { 6688 struct hci_ev_le_remote_feat_complete *ev = data; 6689 struct hci_conn *conn; 6690 6691 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 6692 6693 hci_dev_lock(hdev); 6694 6695 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle)); 6696 if (conn) { 6697 if (!ev->status) 6698 memcpy(conn->features[0], ev->features, 8); 6699 6700 if (conn->state == BT_CONFIG) { 6701 __u8 status; 6702 6703 /* If the local controller supports peripheral-initiated 6704 * features exchange, but the remote controller does 6705 * not, then it is possible that the error code 0x1a 6706 * for unsupported remote feature gets returned. 6707 * 6708 * In this specific case, allow the connection to 6709 * transition into connected state and mark it as 6710 * successful. 6711 */ 6712 if (!conn->out && ev->status == 0x1a && 6713 (hdev->le_features[0] & HCI_LE_PERIPHERAL_FEATURES)) 6714 status = 0x00; 6715 else 6716 status = ev->status; 6717 6718 conn->state = BT_CONNECTED; 6719 hci_connect_cfm(conn, status); 6720 hci_conn_drop(conn); 6721 } 6722 } 6723 6724 hci_dev_unlock(hdev); 6725 } 6726 6727 static void hci_le_ltk_request_evt(struct hci_dev *hdev, void *data, 6728 struct sk_buff *skb) 6729 { 6730 struct hci_ev_le_ltk_req *ev = data; 6731 struct hci_cp_le_ltk_reply cp; 6732 struct hci_cp_le_ltk_neg_reply neg; 6733 struct hci_conn *conn; 6734 struct smp_ltk *ltk; 6735 6736 bt_dev_dbg(hdev, "handle 0x%4.4x", __le16_to_cpu(ev->handle)); 6737 6738 hci_dev_lock(hdev); 6739 6740 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle)); 6741 if (conn == NULL) 6742 goto not_found; 6743 6744 ltk = hci_find_ltk(hdev, &conn->dst, conn->dst_type, conn->role); 6745 if (!ltk) 6746 goto not_found; 6747 6748 if (smp_ltk_is_sc(ltk)) { 6749 /* With SC both EDiv and Rand are set to zero */ 6750 if (ev->ediv || ev->rand) 6751 goto not_found; 6752 } else { 6753 /* For non-SC keys check that EDiv and Rand match */ 6754 if (ev->ediv != ltk->ediv || ev->rand != ltk->rand) 6755 goto not_found; 6756 } 6757 6758 memcpy(cp.ltk, ltk->val, ltk->enc_size); 6759 memset(cp.ltk + ltk->enc_size, 0, sizeof(cp.ltk) - ltk->enc_size); 6760 cp.handle = cpu_to_le16(conn->handle); 6761 6762 conn->pending_sec_level = smp_ltk_sec_level(ltk); 6763 6764 conn->enc_key_size = ltk->enc_size; 6765 6766 hci_send_cmd(hdev, HCI_OP_LE_LTK_REPLY, sizeof(cp), &cp); 6767 6768 /* Ref. Bluetooth Core SPEC pages 1975 and 2004. STK is a 6769 * temporary key used to encrypt a connection following 6770 * pairing. It is used during the Encrypted Session Setup to 6771 * distribute the keys. Later, security can be re-established 6772 * using a distributed LTK. 6773 */ 6774 if (ltk->type == SMP_STK) { 6775 set_bit(HCI_CONN_STK_ENCRYPT, &conn->flags); 6776 list_del_rcu(<k->list); 6777 kfree_rcu(ltk, rcu); 6778 } else { 6779 clear_bit(HCI_CONN_STK_ENCRYPT, &conn->flags); 6780 } 6781 6782 hci_dev_unlock(hdev); 6783 6784 return; 6785 6786 not_found: 6787 neg.handle = ev->handle; 6788 hci_send_cmd(hdev, HCI_OP_LE_LTK_NEG_REPLY, sizeof(neg), &neg); 6789 hci_dev_unlock(hdev); 6790 } 6791 6792 static void send_conn_param_neg_reply(struct hci_dev *hdev, u16 handle, 6793 u8 reason) 6794 { 6795 struct hci_cp_le_conn_param_req_neg_reply cp; 6796 6797 cp.handle = cpu_to_le16(handle); 6798 cp.reason = reason; 6799 6800 hci_send_cmd(hdev, HCI_OP_LE_CONN_PARAM_REQ_NEG_REPLY, sizeof(cp), 6801 &cp); 6802 } 6803 6804 static void hci_le_remote_conn_param_req_evt(struct hci_dev *hdev, void *data, 6805 struct sk_buff *skb) 6806 { 6807 struct hci_ev_le_remote_conn_param_req *ev = data; 6808 struct hci_cp_le_conn_param_req_reply cp; 6809 struct hci_conn *hcon; 6810 u16 handle, min, max, latency, timeout; 6811 6812 bt_dev_dbg(hdev, "handle 0x%4.4x", __le16_to_cpu(ev->handle)); 6813 6814 handle = le16_to_cpu(ev->handle); 6815 min = le16_to_cpu(ev->interval_min); 6816 max = le16_to_cpu(ev->interval_max); 6817 latency = le16_to_cpu(ev->latency); 6818 timeout = le16_to_cpu(ev->timeout); 6819 6820 hcon = hci_conn_hash_lookup_handle(hdev, handle); 6821 if (!hcon || hcon->state != BT_CONNECTED) 6822 return send_conn_param_neg_reply(hdev, handle, 6823 HCI_ERROR_UNKNOWN_CONN_ID); 6824 6825 if (max > hcon->le_conn_max_interval) 6826 return send_conn_param_neg_reply(hdev, handle, 6827 HCI_ERROR_INVALID_LL_PARAMS); 6828 6829 if (hci_check_conn_params(min, max, latency, timeout)) 6830 return send_conn_param_neg_reply(hdev, handle, 6831 HCI_ERROR_INVALID_LL_PARAMS); 6832 6833 if (hcon->role == HCI_ROLE_MASTER) { 6834 struct hci_conn_params *params; 6835 u8 store_hint; 6836 6837 hci_dev_lock(hdev); 6838 6839 params = hci_conn_params_lookup(hdev, &hcon->dst, 6840 hcon->dst_type); 6841 if (params) { 6842 params->conn_min_interval = min; 6843 params->conn_max_interval = max; 6844 params->conn_latency = latency; 6845 params->supervision_timeout = timeout; 6846 store_hint = 0x01; 6847 } else { 6848 store_hint = 0x00; 6849 } 6850 6851 hci_dev_unlock(hdev); 6852 6853 mgmt_new_conn_param(hdev, &hcon->dst, hcon->dst_type, 6854 store_hint, min, max, latency, timeout); 6855 } 6856 6857 cp.handle = ev->handle; 6858 cp.interval_min = ev->interval_min; 6859 cp.interval_max = ev->interval_max; 6860 cp.latency = ev->latency; 6861 cp.timeout = ev->timeout; 6862 cp.min_ce_len = 0; 6863 cp.max_ce_len = 0; 6864 6865 hci_send_cmd(hdev, HCI_OP_LE_CONN_PARAM_REQ_REPLY, sizeof(cp), &cp); 6866 } 6867 6868 static void hci_le_direct_adv_report_evt(struct hci_dev *hdev, void *data, 6869 struct sk_buff *skb) 6870 { 6871 struct hci_ev_le_direct_adv_report *ev = data; 6872 u64 instant = jiffies; 6873 int i; 6874 6875 if (!hci_le_ev_skb_pull(hdev, skb, HCI_EV_LE_DIRECT_ADV_REPORT, 6876 flex_array_size(ev, info, ev->num))) 6877 return; 6878 6879 if (!ev->num) 6880 return; 6881 6882 hci_dev_lock(hdev); 6883 6884 for (i = 0; i < ev->num; i++) { 6885 struct hci_ev_le_direct_adv_info *info = &ev->info[i]; 6886 6887 process_adv_report(hdev, info->type, &info->bdaddr, 6888 info->bdaddr_type, &info->direct_addr, 6889 info->direct_addr_type, info->rssi, NULL, 0, 6890 false, false, instant); 6891 } 6892 6893 hci_dev_unlock(hdev); 6894 } 6895 6896 static void hci_le_phy_update_evt(struct hci_dev *hdev, void *data, 6897 struct sk_buff *skb) 6898 { 6899 struct hci_ev_le_phy_update_complete *ev = data; 6900 struct hci_conn *conn; 6901 6902 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 6903 6904 if (ev->status) 6905 return; 6906 6907 hci_dev_lock(hdev); 6908 6909 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle)); 6910 if (!conn) 6911 goto unlock; 6912 6913 conn->le_tx_phy = ev->tx_phy; 6914 conn->le_rx_phy = ev->rx_phy; 6915 6916 unlock: 6917 hci_dev_unlock(hdev); 6918 } 6919 6920 static void hci_le_cis_estabilished_evt(struct hci_dev *hdev, void *data, 6921 struct sk_buff *skb) 6922 { 6923 struct hci_evt_le_cis_established *ev = data; 6924 struct hci_conn *conn; 6925 struct bt_iso_qos *qos; 6926 bool pending = false; 6927 u16 handle = __le16_to_cpu(ev->handle); 6928 6929 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 6930 6931 hci_dev_lock(hdev); 6932 6933 conn = hci_conn_hash_lookup_handle(hdev, handle); 6934 if (!conn) { 6935 bt_dev_err(hdev, 6936 "Unable to find connection with handle 0x%4.4x", 6937 handle); 6938 goto unlock; 6939 } 6940 6941 if (conn->type != ISO_LINK) { 6942 bt_dev_err(hdev, 6943 "Invalid connection link type handle 0x%4.4x", 6944 handle); 6945 goto unlock; 6946 } 6947 6948 qos = &conn->iso_qos; 6949 6950 pending = test_and_clear_bit(HCI_CONN_CREATE_CIS, &conn->flags); 6951 6952 /* Convert ISO Interval (1.25 ms slots) to SDU Interval (us) */ 6953 qos->ucast.in.interval = le16_to_cpu(ev->interval) * 1250; 6954 qos->ucast.out.interval = qos->ucast.in.interval; 6955 6956 switch (conn->role) { 6957 case HCI_ROLE_SLAVE: 6958 /* Convert Transport Latency (us) to Latency (msec) */ 6959 qos->ucast.in.latency = 6960 DIV_ROUND_CLOSEST(get_unaligned_le24(ev->c_latency), 6961 1000); 6962 qos->ucast.out.latency = 6963 DIV_ROUND_CLOSEST(get_unaligned_le24(ev->p_latency), 6964 1000); 6965 qos->ucast.in.sdu = le16_to_cpu(ev->c_mtu); 6966 qos->ucast.out.sdu = le16_to_cpu(ev->p_mtu); 6967 qos->ucast.in.phy = ev->c_phy; 6968 qos->ucast.out.phy = ev->p_phy; 6969 break; 6970 case HCI_ROLE_MASTER: 6971 /* Convert Transport Latency (us) to Latency (msec) */ 6972 qos->ucast.out.latency = 6973 DIV_ROUND_CLOSEST(get_unaligned_le24(ev->c_latency), 6974 1000); 6975 qos->ucast.in.latency = 6976 DIV_ROUND_CLOSEST(get_unaligned_le24(ev->p_latency), 6977 1000); 6978 qos->ucast.out.sdu = le16_to_cpu(ev->c_mtu); 6979 qos->ucast.in.sdu = le16_to_cpu(ev->p_mtu); 6980 qos->ucast.out.phy = ev->c_phy; 6981 qos->ucast.in.phy = ev->p_phy; 6982 break; 6983 } 6984 6985 if (!ev->status) { 6986 conn->state = BT_CONNECTED; 6987 hci_debugfs_create_conn(conn); 6988 hci_conn_add_sysfs(conn); 6989 hci_iso_setup_path(conn); 6990 goto unlock; 6991 } 6992 6993 conn->state = BT_CLOSED; 6994 hci_connect_cfm(conn, ev->status); 6995 hci_conn_del(conn); 6996 6997 unlock: 6998 if (pending) 6999 hci_le_create_cis_pending(hdev); 7000 7001 hci_dev_unlock(hdev); 7002 } 7003 7004 static void hci_le_reject_cis(struct hci_dev *hdev, __le16 handle) 7005 { 7006 struct hci_cp_le_reject_cis cp; 7007 7008 memset(&cp, 0, sizeof(cp)); 7009 cp.handle = handle; 7010 cp.reason = HCI_ERROR_REJ_BAD_ADDR; 7011 hci_send_cmd(hdev, HCI_OP_LE_REJECT_CIS, sizeof(cp), &cp); 7012 } 7013 7014 static void hci_le_accept_cis(struct hci_dev *hdev, __le16 handle) 7015 { 7016 struct hci_cp_le_accept_cis cp; 7017 7018 memset(&cp, 0, sizeof(cp)); 7019 cp.handle = handle; 7020 hci_send_cmd(hdev, HCI_OP_LE_ACCEPT_CIS, sizeof(cp), &cp); 7021 } 7022 7023 static void hci_le_cis_req_evt(struct hci_dev *hdev, void *data, 7024 struct sk_buff *skb) 7025 { 7026 struct hci_evt_le_cis_req *ev = data; 7027 u16 acl_handle, cis_handle; 7028 struct hci_conn *acl, *cis; 7029 int mask; 7030 __u8 flags = 0; 7031 7032 acl_handle = __le16_to_cpu(ev->acl_handle); 7033 cis_handle = __le16_to_cpu(ev->cis_handle); 7034 7035 bt_dev_dbg(hdev, "acl 0x%4.4x handle 0x%4.4x cig 0x%2.2x cis 0x%2.2x", 7036 acl_handle, cis_handle, ev->cig_id, ev->cis_id); 7037 7038 hci_dev_lock(hdev); 7039 7040 acl = hci_conn_hash_lookup_handle(hdev, acl_handle); 7041 if (!acl) 7042 goto unlock; 7043 7044 mask = hci_proto_connect_ind(hdev, &acl->dst, ISO_LINK, &flags); 7045 if (!(mask & HCI_LM_ACCEPT)) { 7046 hci_le_reject_cis(hdev, ev->cis_handle); 7047 goto unlock; 7048 } 7049 7050 cis = hci_conn_hash_lookup_handle(hdev, cis_handle); 7051 if (!cis) { 7052 cis = hci_conn_add(hdev, ISO_LINK, &acl->dst, HCI_ROLE_SLAVE, 7053 cis_handle); 7054 if (!cis) { 7055 hci_le_reject_cis(hdev, ev->cis_handle); 7056 goto unlock; 7057 } 7058 } 7059 7060 cis->iso_qos.ucast.cig = ev->cig_id; 7061 cis->iso_qos.ucast.cis = ev->cis_id; 7062 7063 if (!(flags & HCI_PROTO_DEFER)) { 7064 hci_le_accept_cis(hdev, ev->cis_handle); 7065 } else { 7066 cis->state = BT_CONNECT2; 7067 hci_connect_cfm(cis, 0); 7068 } 7069 7070 unlock: 7071 hci_dev_unlock(hdev); 7072 } 7073 7074 static int hci_iso_term_big_sync(struct hci_dev *hdev, void *data) 7075 { 7076 u8 handle = PTR_UINT(data); 7077 7078 return hci_le_terminate_big_sync(hdev, handle, 7079 HCI_ERROR_LOCAL_HOST_TERM); 7080 } 7081 7082 static void hci_le_create_big_complete_evt(struct hci_dev *hdev, void *data, 7083 struct sk_buff *skb) 7084 { 7085 struct hci_evt_le_create_big_complete *ev = data; 7086 struct hci_conn *conn; 7087 __u8 i = 0; 7088 7089 BT_DBG("%s status 0x%2.2x", hdev->name, ev->status); 7090 7091 if (!hci_le_ev_skb_pull(hdev, skb, HCI_EVT_LE_CREATE_BIG_COMPLETE, 7092 flex_array_size(ev, bis_handle, ev->num_bis))) 7093 return; 7094 7095 hci_dev_lock(hdev); 7096 rcu_read_lock(); 7097 7098 /* Connect all BISes that are bound to the BIG */ 7099 list_for_each_entry_rcu(conn, &hdev->conn_hash.list, list) { 7100 if (bacmp(&conn->dst, BDADDR_ANY) || 7101 conn->type != ISO_LINK || 7102 conn->iso_qos.bcast.big != ev->handle) 7103 continue; 7104 7105 if (hci_conn_set_handle(conn, 7106 __le16_to_cpu(ev->bis_handle[i++]))) 7107 continue; 7108 7109 if (!ev->status) { 7110 conn->state = BT_CONNECTED; 7111 set_bit(HCI_CONN_BIG_CREATED, &conn->flags); 7112 rcu_read_unlock(); 7113 hci_debugfs_create_conn(conn); 7114 hci_conn_add_sysfs(conn); 7115 hci_iso_setup_path(conn); 7116 rcu_read_lock(); 7117 continue; 7118 } 7119 7120 hci_connect_cfm(conn, ev->status); 7121 rcu_read_unlock(); 7122 hci_conn_del(conn); 7123 rcu_read_lock(); 7124 } 7125 7126 rcu_read_unlock(); 7127 7128 if (!ev->status && !i) 7129 /* If no BISes have been connected for the BIG, 7130 * terminate. This is in case all bound connections 7131 * have been closed before the BIG creation 7132 * has completed. 7133 */ 7134 hci_cmd_sync_queue(hdev, hci_iso_term_big_sync, 7135 UINT_PTR(ev->handle), NULL); 7136 7137 hci_dev_unlock(hdev); 7138 } 7139 7140 static void hci_le_big_sync_established_evt(struct hci_dev *hdev, void *data, 7141 struct sk_buff *skb) 7142 { 7143 struct hci_evt_le_big_sync_estabilished *ev = data; 7144 struct hci_conn *bis; 7145 struct hci_conn *pa_sync; 7146 int i; 7147 7148 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 7149 7150 if (!hci_le_ev_skb_pull(hdev, skb, HCI_EVT_LE_BIG_SYNC_ESTABILISHED, 7151 flex_array_size(ev, bis, ev->num_bis))) 7152 return; 7153 7154 hci_dev_lock(hdev); 7155 7156 if (!ev->status) { 7157 pa_sync = hci_conn_hash_lookup_pa_sync_big_handle(hdev, ev->handle); 7158 if (pa_sync) 7159 /* Also mark the BIG sync established event on the 7160 * associated PA sync hcon 7161 */ 7162 set_bit(HCI_CONN_BIG_SYNC, &pa_sync->flags); 7163 } 7164 7165 for (i = 0; i < ev->num_bis; i++) { 7166 u16 handle = le16_to_cpu(ev->bis[i]); 7167 __le32 interval; 7168 7169 bis = hci_conn_hash_lookup_handle(hdev, handle); 7170 if (!bis) { 7171 bis = hci_conn_add(hdev, ISO_LINK, BDADDR_ANY, 7172 HCI_ROLE_SLAVE, handle); 7173 if (!bis) 7174 continue; 7175 } 7176 7177 if (ev->status != 0x42) 7178 /* Mark PA sync as established */ 7179 set_bit(HCI_CONN_PA_SYNC, &bis->flags); 7180 7181 bis->iso_qos.bcast.big = ev->handle; 7182 memset(&interval, 0, sizeof(interval)); 7183 memcpy(&interval, ev->latency, sizeof(ev->latency)); 7184 bis->iso_qos.bcast.in.interval = le32_to_cpu(interval); 7185 /* Convert ISO Interval (1.25 ms slots) to latency (ms) */ 7186 bis->iso_qos.bcast.in.latency = le16_to_cpu(ev->interval) * 125 / 100; 7187 bis->iso_qos.bcast.in.sdu = le16_to_cpu(ev->max_pdu); 7188 7189 if (!ev->status) { 7190 set_bit(HCI_CONN_BIG_SYNC, &bis->flags); 7191 hci_iso_setup_path(bis); 7192 } 7193 } 7194 7195 /* In case BIG sync failed, notify each failed connection to 7196 * the user after all hci connections have been added 7197 */ 7198 if (ev->status) 7199 for (i = 0; i < ev->num_bis; i++) { 7200 u16 handle = le16_to_cpu(ev->bis[i]); 7201 7202 bis = hci_conn_hash_lookup_handle(hdev, handle); 7203 7204 set_bit(HCI_CONN_BIG_SYNC_FAILED, &bis->flags); 7205 hci_connect_cfm(bis, ev->status); 7206 } 7207 7208 hci_dev_unlock(hdev); 7209 } 7210 7211 static void hci_le_big_info_adv_report_evt(struct hci_dev *hdev, void *data, 7212 struct sk_buff *skb) 7213 { 7214 struct hci_evt_le_big_info_adv_report *ev = data; 7215 int mask = hdev->link_mode; 7216 __u8 flags = 0; 7217 struct hci_conn *pa_sync; 7218 7219 bt_dev_dbg(hdev, "sync_handle 0x%4.4x", le16_to_cpu(ev->sync_handle)); 7220 7221 hci_dev_lock(hdev); 7222 7223 mask |= hci_proto_connect_ind(hdev, BDADDR_ANY, ISO_LINK, &flags); 7224 if (!(mask & HCI_LM_ACCEPT)) { 7225 hci_le_pa_term_sync(hdev, ev->sync_handle); 7226 goto unlock; 7227 } 7228 7229 if (!(flags & HCI_PROTO_DEFER)) 7230 goto unlock; 7231 7232 pa_sync = hci_conn_hash_lookup_pa_sync_handle 7233 (hdev, 7234 le16_to_cpu(ev->sync_handle)); 7235 7236 if (pa_sync) 7237 goto unlock; 7238 7239 /* Add connection to indicate the PA sync event */ 7240 pa_sync = hci_conn_add_unset(hdev, ISO_LINK, BDADDR_ANY, 7241 HCI_ROLE_SLAVE); 7242 7243 if (!pa_sync) 7244 goto unlock; 7245 7246 pa_sync->sync_handle = le16_to_cpu(ev->sync_handle); 7247 set_bit(HCI_CONN_PA_SYNC, &pa_sync->flags); 7248 7249 /* Notify iso layer */ 7250 hci_connect_cfm(pa_sync, 0x00); 7251 7252 /* Notify MGMT layer */ 7253 mgmt_device_connected(hdev, pa_sync, NULL, 0); 7254 7255 unlock: 7256 hci_dev_unlock(hdev); 7257 } 7258 7259 #define HCI_LE_EV_VL(_op, _func, _min_len, _max_len) \ 7260 [_op] = { \ 7261 .func = _func, \ 7262 .min_len = _min_len, \ 7263 .max_len = _max_len, \ 7264 } 7265 7266 #define HCI_LE_EV(_op, _func, _len) \ 7267 HCI_LE_EV_VL(_op, _func, _len, _len) 7268 7269 #define HCI_LE_EV_STATUS(_op, _func) \ 7270 HCI_LE_EV(_op, _func, sizeof(struct hci_ev_status)) 7271 7272 /* Entries in this table shall have their position according to the subevent 7273 * opcode they handle so the use of the macros above is recommend since it does 7274 * attempt to initialize at its proper index using Designated Initializers that 7275 * way events without a callback function can be ommited. 7276 */ 7277 static const struct hci_le_ev { 7278 void (*func)(struct hci_dev *hdev, void *data, struct sk_buff *skb); 7279 u16 min_len; 7280 u16 max_len; 7281 } hci_le_ev_table[U8_MAX + 1] = { 7282 /* [0x01 = HCI_EV_LE_CONN_COMPLETE] */ 7283 HCI_LE_EV(HCI_EV_LE_CONN_COMPLETE, hci_le_conn_complete_evt, 7284 sizeof(struct hci_ev_le_conn_complete)), 7285 /* [0x02 = HCI_EV_LE_ADVERTISING_REPORT] */ 7286 HCI_LE_EV_VL(HCI_EV_LE_ADVERTISING_REPORT, hci_le_adv_report_evt, 7287 sizeof(struct hci_ev_le_advertising_report), 7288 HCI_MAX_EVENT_SIZE), 7289 /* [0x03 = HCI_EV_LE_CONN_UPDATE_COMPLETE] */ 7290 HCI_LE_EV(HCI_EV_LE_CONN_UPDATE_COMPLETE, 7291 hci_le_conn_update_complete_evt, 7292 sizeof(struct hci_ev_le_conn_update_complete)), 7293 /* [0x04 = HCI_EV_LE_REMOTE_FEAT_COMPLETE] */ 7294 HCI_LE_EV(HCI_EV_LE_REMOTE_FEAT_COMPLETE, 7295 hci_le_remote_feat_complete_evt, 7296 sizeof(struct hci_ev_le_remote_feat_complete)), 7297 /* [0x05 = HCI_EV_LE_LTK_REQ] */ 7298 HCI_LE_EV(HCI_EV_LE_LTK_REQ, hci_le_ltk_request_evt, 7299 sizeof(struct hci_ev_le_ltk_req)), 7300 /* [0x06 = HCI_EV_LE_REMOTE_CONN_PARAM_REQ] */ 7301 HCI_LE_EV(HCI_EV_LE_REMOTE_CONN_PARAM_REQ, 7302 hci_le_remote_conn_param_req_evt, 7303 sizeof(struct hci_ev_le_remote_conn_param_req)), 7304 /* [0x0a = HCI_EV_LE_ENHANCED_CONN_COMPLETE] */ 7305 HCI_LE_EV(HCI_EV_LE_ENHANCED_CONN_COMPLETE, 7306 hci_le_enh_conn_complete_evt, 7307 sizeof(struct hci_ev_le_enh_conn_complete)), 7308 /* [0x0b = HCI_EV_LE_DIRECT_ADV_REPORT] */ 7309 HCI_LE_EV_VL(HCI_EV_LE_DIRECT_ADV_REPORT, hci_le_direct_adv_report_evt, 7310 sizeof(struct hci_ev_le_direct_adv_report), 7311 HCI_MAX_EVENT_SIZE), 7312 /* [0x0c = HCI_EV_LE_PHY_UPDATE_COMPLETE] */ 7313 HCI_LE_EV(HCI_EV_LE_PHY_UPDATE_COMPLETE, hci_le_phy_update_evt, 7314 sizeof(struct hci_ev_le_phy_update_complete)), 7315 /* [0x0d = HCI_EV_LE_EXT_ADV_REPORT] */ 7316 HCI_LE_EV_VL(HCI_EV_LE_EXT_ADV_REPORT, hci_le_ext_adv_report_evt, 7317 sizeof(struct hci_ev_le_ext_adv_report), 7318 HCI_MAX_EVENT_SIZE), 7319 /* [0x0e = HCI_EV_LE_PA_SYNC_ESTABLISHED] */ 7320 HCI_LE_EV(HCI_EV_LE_PA_SYNC_ESTABLISHED, 7321 hci_le_pa_sync_estabilished_evt, 7322 sizeof(struct hci_ev_le_pa_sync_established)), 7323 /* [0x0f = HCI_EV_LE_PER_ADV_REPORT] */ 7324 HCI_LE_EV_VL(HCI_EV_LE_PER_ADV_REPORT, 7325 hci_le_per_adv_report_evt, 7326 sizeof(struct hci_ev_le_per_adv_report), 7327 HCI_MAX_EVENT_SIZE), 7328 /* [0x12 = HCI_EV_LE_EXT_ADV_SET_TERM] */ 7329 HCI_LE_EV(HCI_EV_LE_EXT_ADV_SET_TERM, hci_le_ext_adv_term_evt, 7330 sizeof(struct hci_evt_le_ext_adv_set_term)), 7331 /* [0x19 = HCI_EVT_LE_CIS_ESTABLISHED] */ 7332 HCI_LE_EV(HCI_EVT_LE_CIS_ESTABLISHED, hci_le_cis_estabilished_evt, 7333 sizeof(struct hci_evt_le_cis_established)), 7334 /* [0x1a = HCI_EVT_LE_CIS_REQ] */ 7335 HCI_LE_EV(HCI_EVT_LE_CIS_REQ, hci_le_cis_req_evt, 7336 sizeof(struct hci_evt_le_cis_req)), 7337 /* [0x1b = HCI_EVT_LE_CREATE_BIG_COMPLETE] */ 7338 HCI_LE_EV_VL(HCI_EVT_LE_CREATE_BIG_COMPLETE, 7339 hci_le_create_big_complete_evt, 7340 sizeof(struct hci_evt_le_create_big_complete), 7341 HCI_MAX_EVENT_SIZE), 7342 /* [0x1d = HCI_EV_LE_BIG_SYNC_ESTABILISHED] */ 7343 HCI_LE_EV_VL(HCI_EVT_LE_BIG_SYNC_ESTABILISHED, 7344 hci_le_big_sync_established_evt, 7345 sizeof(struct hci_evt_le_big_sync_estabilished), 7346 HCI_MAX_EVENT_SIZE), 7347 /* [0x22 = HCI_EVT_LE_BIG_INFO_ADV_REPORT] */ 7348 HCI_LE_EV_VL(HCI_EVT_LE_BIG_INFO_ADV_REPORT, 7349 hci_le_big_info_adv_report_evt, 7350 sizeof(struct hci_evt_le_big_info_adv_report), 7351 HCI_MAX_EVENT_SIZE), 7352 }; 7353 7354 static void hci_le_meta_evt(struct hci_dev *hdev, void *data, 7355 struct sk_buff *skb, u16 *opcode, u8 *status, 7356 hci_req_complete_t *req_complete, 7357 hci_req_complete_skb_t *req_complete_skb) 7358 { 7359 struct hci_ev_le_meta *ev = data; 7360 const struct hci_le_ev *subev; 7361 7362 bt_dev_dbg(hdev, "subevent 0x%2.2x", ev->subevent); 7363 7364 /* Only match event if command OGF is for LE */ 7365 if (hdev->req_skb && 7366 hci_opcode_ogf(hci_skb_opcode(hdev->req_skb)) == 0x08 && 7367 hci_skb_event(hdev->req_skb) == ev->subevent) { 7368 *opcode = hci_skb_opcode(hdev->req_skb); 7369 hci_req_cmd_complete(hdev, *opcode, 0x00, req_complete, 7370 req_complete_skb); 7371 } 7372 7373 subev = &hci_le_ev_table[ev->subevent]; 7374 if (!subev->func) 7375 return; 7376 7377 if (skb->len < subev->min_len) { 7378 bt_dev_err(hdev, "unexpected subevent 0x%2.2x length: %u < %u", 7379 ev->subevent, skb->len, subev->min_len); 7380 return; 7381 } 7382 7383 /* Just warn if the length is over max_len size it still be 7384 * possible to partially parse the event so leave to callback to 7385 * decide if that is acceptable. 7386 */ 7387 if (skb->len > subev->max_len) 7388 bt_dev_warn(hdev, "unexpected subevent 0x%2.2x length: %u > %u", 7389 ev->subevent, skb->len, subev->max_len); 7390 data = hci_le_ev_skb_pull(hdev, skb, ev->subevent, subev->min_len); 7391 if (!data) 7392 return; 7393 7394 subev->func(hdev, data, skb); 7395 } 7396 7397 static bool hci_get_cmd_complete(struct hci_dev *hdev, u16 opcode, 7398 u8 event, struct sk_buff *skb) 7399 { 7400 struct hci_ev_cmd_complete *ev; 7401 struct hci_event_hdr *hdr; 7402 7403 if (!skb) 7404 return false; 7405 7406 hdr = hci_ev_skb_pull(hdev, skb, event, sizeof(*hdr)); 7407 if (!hdr) 7408 return false; 7409 7410 if (event) { 7411 if (hdr->evt != event) 7412 return false; 7413 return true; 7414 } 7415 7416 /* Check if request ended in Command Status - no way to retrieve 7417 * any extra parameters in this case. 7418 */ 7419 if (hdr->evt == HCI_EV_CMD_STATUS) 7420 return false; 7421 7422 if (hdr->evt != HCI_EV_CMD_COMPLETE) { 7423 bt_dev_err(hdev, "last event is not cmd complete (0x%2.2x)", 7424 hdr->evt); 7425 return false; 7426 } 7427 7428 ev = hci_cc_skb_pull(hdev, skb, opcode, sizeof(*ev)); 7429 if (!ev) 7430 return false; 7431 7432 if (opcode != __le16_to_cpu(ev->opcode)) { 7433 BT_DBG("opcode doesn't match (0x%2.2x != 0x%2.2x)", opcode, 7434 __le16_to_cpu(ev->opcode)); 7435 return false; 7436 } 7437 7438 return true; 7439 } 7440 7441 static void hci_store_wake_reason(struct hci_dev *hdev, u8 event, 7442 struct sk_buff *skb) 7443 { 7444 struct hci_ev_le_advertising_info *adv; 7445 struct hci_ev_le_direct_adv_info *direct_adv; 7446 struct hci_ev_le_ext_adv_info *ext_adv; 7447 const struct hci_ev_conn_complete *conn_complete = (void *)skb->data; 7448 const struct hci_ev_conn_request *conn_request = (void *)skb->data; 7449 7450 hci_dev_lock(hdev); 7451 7452 /* If we are currently suspended and this is the first BT event seen, 7453 * save the wake reason associated with the event. 7454 */ 7455 if (!hdev->suspended || hdev->wake_reason) 7456 goto unlock; 7457 7458 /* Default to remote wake. Values for wake_reason are documented in the 7459 * Bluez mgmt api docs. 7460 */ 7461 hdev->wake_reason = MGMT_WAKE_REASON_REMOTE_WAKE; 7462 7463 /* Once configured for remote wakeup, we should only wake up for 7464 * reconnections. It's useful to see which device is waking us up so 7465 * keep track of the bdaddr of the connection event that woke us up. 7466 */ 7467 if (event == HCI_EV_CONN_REQUEST) { 7468 bacpy(&hdev->wake_addr, &conn_request->bdaddr); 7469 hdev->wake_addr_type = BDADDR_BREDR; 7470 } else if (event == HCI_EV_CONN_COMPLETE) { 7471 bacpy(&hdev->wake_addr, &conn_complete->bdaddr); 7472 hdev->wake_addr_type = BDADDR_BREDR; 7473 } else if (event == HCI_EV_LE_META) { 7474 struct hci_ev_le_meta *le_ev = (void *)skb->data; 7475 u8 subevent = le_ev->subevent; 7476 u8 *ptr = &skb->data[sizeof(*le_ev)]; 7477 u8 num_reports = *ptr; 7478 7479 if ((subevent == HCI_EV_LE_ADVERTISING_REPORT || 7480 subevent == HCI_EV_LE_DIRECT_ADV_REPORT || 7481 subevent == HCI_EV_LE_EXT_ADV_REPORT) && 7482 num_reports) { 7483 adv = (void *)(ptr + 1); 7484 direct_adv = (void *)(ptr + 1); 7485 ext_adv = (void *)(ptr + 1); 7486 7487 switch (subevent) { 7488 case HCI_EV_LE_ADVERTISING_REPORT: 7489 bacpy(&hdev->wake_addr, &adv->bdaddr); 7490 hdev->wake_addr_type = adv->bdaddr_type; 7491 break; 7492 case HCI_EV_LE_DIRECT_ADV_REPORT: 7493 bacpy(&hdev->wake_addr, &direct_adv->bdaddr); 7494 hdev->wake_addr_type = direct_adv->bdaddr_type; 7495 break; 7496 case HCI_EV_LE_EXT_ADV_REPORT: 7497 bacpy(&hdev->wake_addr, &ext_adv->bdaddr); 7498 hdev->wake_addr_type = ext_adv->bdaddr_type; 7499 break; 7500 } 7501 } 7502 } else { 7503 hdev->wake_reason = MGMT_WAKE_REASON_UNEXPECTED; 7504 } 7505 7506 unlock: 7507 hci_dev_unlock(hdev); 7508 } 7509 7510 #define HCI_EV_VL(_op, _func, _min_len, _max_len) \ 7511 [_op] = { \ 7512 .req = false, \ 7513 .func = _func, \ 7514 .min_len = _min_len, \ 7515 .max_len = _max_len, \ 7516 } 7517 7518 #define HCI_EV(_op, _func, _len) \ 7519 HCI_EV_VL(_op, _func, _len, _len) 7520 7521 #define HCI_EV_STATUS(_op, _func) \ 7522 HCI_EV(_op, _func, sizeof(struct hci_ev_status)) 7523 7524 #define HCI_EV_REQ_VL(_op, _func, _min_len, _max_len) \ 7525 [_op] = { \ 7526 .req = true, \ 7527 .func_req = _func, \ 7528 .min_len = _min_len, \ 7529 .max_len = _max_len, \ 7530 } 7531 7532 #define HCI_EV_REQ(_op, _func, _len) \ 7533 HCI_EV_REQ_VL(_op, _func, _len, _len) 7534 7535 /* Entries in this table shall have their position according to the event opcode 7536 * they handle so the use of the macros above is recommend since it does attempt 7537 * to initialize at its proper index using Designated Initializers that way 7538 * events without a callback function don't have entered. 7539 */ 7540 static const struct hci_ev { 7541 bool req; 7542 union { 7543 void (*func)(struct hci_dev *hdev, void *data, 7544 struct sk_buff *skb); 7545 void (*func_req)(struct hci_dev *hdev, void *data, 7546 struct sk_buff *skb, u16 *opcode, u8 *status, 7547 hci_req_complete_t *req_complete, 7548 hci_req_complete_skb_t *req_complete_skb); 7549 }; 7550 u16 min_len; 7551 u16 max_len; 7552 } hci_ev_table[U8_MAX + 1] = { 7553 /* [0x01 = HCI_EV_INQUIRY_COMPLETE] */ 7554 HCI_EV_STATUS(HCI_EV_INQUIRY_COMPLETE, hci_inquiry_complete_evt), 7555 /* [0x02 = HCI_EV_INQUIRY_RESULT] */ 7556 HCI_EV_VL(HCI_EV_INQUIRY_RESULT, hci_inquiry_result_evt, 7557 sizeof(struct hci_ev_inquiry_result), HCI_MAX_EVENT_SIZE), 7558 /* [0x03 = HCI_EV_CONN_COMPLETE] */ 7559 HCI_EV(HCI_EV_CONN_COMPLETE, hci_conn_complete_evt, 7560 sizeof(struct hci_ev_conn_complete)), 7561 /* [0x04 = HCI_EV_CONN_REQUEST] */ 7562 HCI_EV(HCI_EV_CONN_REQUEST, hci_conn_request_evt, 7563 sizeof(struct hci_ev_conn_request)), 7564 /* [0x05 = HCI_EV_DISCONN_COMPLETE] */ 7565 HCI_EV(HCI_EV_DISCONN_COMPLETE, hci_disconn_complete_evt, 7566 sizeof(struct hci_ev_disconn_complete)), 7567 /* [0x06 = HCI_EV_AUTH_COMPLETE] */ 7568 HCI_EV(HCI_EV_AUTH_COMPLETE, hci_auth_complete_evt, 7569 sizeof(struct hci_ev_auth_complete)), 7570 /* [0x07 = HCI_EV_REMOTE_NAME] */ 7571 HCI_EV(HCI_EV_REMOTE_NAME, hci_remote_name_evt, 7572 sizeof(struct hci_ev_remote_name)), 7573 /* [0x08 = HCI_EV_ENCRYPT_CHANGE] */ 7574 HCI_EV(HCI_EV_ENCRYPT_CHANGE, hci_encrypt_change_evt, 7575 sizeof(struct hci_ev_encrypt_change)), 7576 /* [0x09 = HCI_EV_CHANGE_LINK_KEY_COMPLETE] */ 7577 HCI_EV(HCI_EV_CHANGE_LINK_KEY_COMPLETE, 7578 hci_change_link_key_complete_evt, 7579 sizeof(struct hci_ev_change_link_key_complete)), 7580 /* [0x0b = HCI_EV_REMOTE_FEATURES] */ 7581 HCI_EV(HCI_EV_REMOTE_FEATURES, hci_remote_features_evt, 7582 sizeof(struct hci_ev_remote_features)), 7583 /* [0x0e = HCI_EV_CMD_COMPLETE] */ 7584 HCI_EV_REQ_VL(HCI_EV_CMD_COMPLETE, hci_cmd_complete_evt, 7585 sizeof(struct hci_ev_cmd_complete), HCI_MAX_EVENT_SIZE), 7586 /* [0x0f = HCI_EV_CMD_STATUS] */ 7587 HCI_EV_REQ(HCI_EV_CMD_STATUS, hci_cmd_status_evt, 7588 sizeof(struct hci_ev_cmd_status)), 7589 /* [0x10 = HCI_EV_CMD_STATUS] */ 7590 HCI_EV(HCI_EV_HARDWARE_ERROR, hci_hardware_error_evt, 7591 sizeof(struct hci_ev_hardware_error)), 7592 /* [0x12 = HCI_EV_ROLE_CHANGE] */ 7593 HCI_EV(HCI_EV_ROLE_CHANGE, hci_role_change_evt, 7594 sizeof(struct hci_ev_role_change)), 7595 /* [0x13 = HCI_EV_NUM_COMP_PKTS] */ 7596 HCI_EV_VL(HCI_EV_NUM_COMP_PKTS, hci_num_comp_pkts_evt, 7597 sizeof(struct hci_ev_num_comp_pkts), HCI_MAX_EVENT_SIZE), 7598 /* [0x14 = HCI_EV_MODE_CHANGE] */ 7599 HCI_EV(HCI_EV_MODE_CHANGE, hci_mode_change_evt, 7600 sizeof(struct hci_ev_mode_change)), 7601 /* [0x16 = HCI_EV_PIN_CODE_REQ] */ 7602 HCI_EV(HCI_EV_PIN_CODE_REQ, hci_pin_code_request_evt, 7603 sizeof(struct hci_ev_pin_code_req)), 7604 /* [0x17 = HCI_EV_LINK_KEY_REQ] */ 7605 HCI_EV(HCI_EV_LINK_KEY_REQ, hci_link_key_request_evt, 7606 sizeof(struct hci_ev_link_key_req)), 7607 /* [0x18 = HCI_EV_LINK_KEY_NOTIFY] */ 7608 HCI_EV(HCI_EV_LINK_KEY_NOTIFY, hci_link_key_notify_evt, 7609 sizeof(struct hci_ev_link_key_notify)), 7610 /* [0x1c = HCI_EV_CLOCK_OFFSET] */ 7611 HCI_EV(HCI_EV_CLOCK_OFFSET, hci_clock_offset_evt, 7612 sizeof(struct hci_ev_clock_offset)), 7613 /* [0x1d = HCI_EV_PKT_TYPE_CHANGE] */ 7614 HCI_EV(HCI_EV_PKT_TYPE_CHANGE, hci_pkt_type_change_evt, 7615 sizeof(struct hci_ev_pkt_type_change)), 7616 /* [0x20 = HCI_EV_PSCAN_REP_MODE] */ 7617 HCI_EV(HCI_EV_PSCAN_REP_MODE, hci_pscan_rep_mode_evt, 7618 sizeof(struct hci_ev_pscan_rep_mode)), 7619 /* [0x22 = HCI_EV_INQUIRY_RESULT_WITH_RSSI] */ 7620 HCI_EV_VL(HCI_EV_INQUIRY_RESULT_WITH_RSSI, 7621 hci_inquiry_result_with_rssi_evt, 7622 sizeof(struct hci_ev_inquiry_result_rssi), 7623 HCI_MAX_EVENT_SIZE), 7624 /* [0x23 = HCI_EV_REMOTE_EXT_FEATURES] */ 7625 HCI_EV(HCI_EV_REMOTE_EXT_FEATURES, hci_remote_ext_features_evt, 7626 sizeof(struct hci_ev_remote_ext_features)), 7627 /* [0x2c = HCI_EV_SYNC_CONN_COMPLETE] */ 7628 HCI_EV(HCI_EV_SYNC_CONN_COMPLETE, hci_sync_conn_complete_evt, 7629 sizeof(struct hci_ev_sync_conn_complete)), 7630 /* [0x2d = HCI_EV_EXTENDED_INQUIRY_RESULT] */ 7631 HCI_EV_VL(HCI_EV_EXTENDED_INQUIRY_RESULT, 7632 hci_extended_inquiry_result_evt, 7633 sizeof(struct hci_ev_ext_inquiry_result), HCI_MAX_EVENT_SIZE), 7634 /* [0x30 = HCI_EV_KEY_REFRESH_COMPLETE] */ 7635 HCI_EV(HCI_EV_KEY_REFRESH_COMPLETE, hci_key_refresh_complete_evt, 7636 sizeof(struct hci_ev_key_refresh_complete)), 7637 /* [0x31 = HCI_EV_IO_CAPA_REQUEST] */ 7638 HCI_EV(HCI_EV_IO_CAPA_REQUEST, hci_io_capa_request_evt, 7639 sizeof(struct hci_ev_io_capa_request)), 7640 /* [0x32 = HCI_EV_IO_CAPA_REPLY] */ 7641 HCI_EV(HCI_EV_IO_CAPA_REPLY, hci_io_capa_reply_evt, 7642 sizeof(struct hci_ev_io_capa_reply)), 7643 /* [0x33 = HCI_EV_USER_CONFIRM_REQUEST] */ 7644 HCI_EV(HCI_EV_USER_CONFIRM_REQUEST, hci_user_confirm_request_evt, 7645 sizeof(struct hci_ev_user_confirm_req)), 7646 /* [0x34 = HCI_EV_USER_PASSKEY_REQUEST] */ 7647 HCI_EV(HCI_EV_USER_PASSKEY_REQUEST, hci_user_passkey_request_evt, 7648 sizeof(struct hci_ev_user_passkey_req)), 7649 /* [0x35 = HCI_EV_REMOTE_OOB_DATA_REQUEST] */ 7650 HCI_EV(HCI_EV_REMOTE_OOB_DATA_REQUEST, hci_remote_oob_data_request_evt, 7651 sizeof(struct hci_ev_remote_oob_data_request)), 7652 /* [0x36 = HCI_EV_SIMPLE_PAIR_COMPLETE] */ 7653 HCI_EV(HCI_EV_SIMPLE_PAIR_COMPLETE, hci_simple_pair_complete_evt, 7654 sizeof(struct hci_ev_simple_pair_complete)), 7655 /* [0x3b = HCI_EV_USER_PASSKEY_NOTIFY] */ 7656 HCI_EV(HCI_EV_USER_PASSKEY_NOTIFY, hci_user_passkey_notify_evt, 7657 sizeof(struct hci_ev_user_passkey_notify)), 7658 /* [0x3c = HCI_EV_KEYPRESS_NOTIFY] */ 7659 HCI_EV(HCI_EV_KEYPRESS_NOTIFY, hci_keypress_notify_evt, 7660 sizeof(struct hci_ev_keypress_notify)), 7661 /* [0x3d = HCI_EV_REMOTE_HOST_FEATURES] */ 7662 HCI_EV(HCI_EV_REMOTE_HOST_FEATURES, hci_remote_host_features_evt, 7663 sizeof(struct hci_ev_remote_host_features)), 7664 /* [0x3e = HCI_EV_LE_META] */ 7665 HCI_EV_REQ_VL(HCI_EV_LE_META, hci_le_meta_evt, 7666 sizeof(struct hci_ev_le_meta), HCI_MAX_EVENT_SIZE), 7667 #if IS_ENABLED(CONFIG_BT_HS) 7668 /* [0x40 = HCI_EV_PHY_LINK_COMPLETE] */ 7669 HCI_EV(HCI_EV_PHY_LINK_COMPLETE, hci_phy_link_complete_evt, 7670 sizeof(struct hci_ev_phy_link_complete)), 7671 /* [0x41 = HCI_EV_CHANNEL_SELECTED] */ 7672 HCI_EV(HCI_EV_CHANNEL_SELECTED, hci_chan_selected_evt, 7673 sizeof(struct hci_ev_channel_selected)), 7674 /* [0x42 = HCI_EV_DISCONN_PHY_LINK_COMPLETE] */ 7675 HCI_EV(HCI_EV_DISCONN_LOGICAL_LINK_COMPLETE, 7676 hci_disconn_loglink_complete_evt, 7677 sizeof(struct hci_ev_disconn_logical_link_complete)), 7678 /* [0x45 = HCI_EV_LOGICAL_LINK_COMPLETE] */ 7679 HCI_EV(HCI_EV_LOGICAL_LINK_COMPLETE, hci_loglink_complete_evt, 7680 sizeof(struct hci_ev_logical_link_complete)), 7681 /* [0x46 = HCI_EV_DISCONN_LOGICAL_LINK_COMPLETE] */ 7682 HCI_EV(HCI_EV_DISCONN_PHY_LINK_COMPLETE, 7683 hci_disconn_phylink_complete_evt, 7684 sizeof(struct hci_ev_disconn_phy_link_complete)), 7685 #endif 7686 /* [0x48 = HCI_EV_NUM_COMP_BLOCKS] */ 7687 HCI_EV(HCI_EV_NUM_COMP_BLOCKS, hci_num_comp_blocks_evt, 7688 sizeof(struct hci_ev_num_comp_blocks)), 7689 /* [0xff = HCI_EV_VENDOR] */ 7690 HCI_EV_VL(HCI_EV_VENDOR, msft_vendor_evt, 0, HCI_MAX_EVENT_SIZE), 7691 }; 7692 7693 static void hci_event_func(struct hci_dev *hdev, u8 event, struct sk_buff *skb, 7694 u16 *opcode, u8 *status, 7695 hci_req_complete_t *req_complete, 7696 hci_req_complete_skb_t *req_complete_skb) 7697 { 7698 const struct hci_ev *ev = &hci_ev_table[event]; 7699 void *data; 7700 7701 if (!ev->func) 7702 return; 7703 7704 if (skb->len < ev->min_len) { 7705 bt_dev_err(hdev, "unexpected event 0x%2.2x length: %u < %u", 7706 event, skb->len, ev->min_len); 7707 return; 7708 } 7709 7710 /* Just warn if the length is over max_len size it still be 7711 * possible to partially parse the event so leave to callback to 7712 * decide if that is acceptable. 7713 */ 7714 if (skb->len > ev->max_len) 7715 bt_dev_warn_ratelimited(hdev, 7716 "unexpected event 0x%2.2x length: %u > %u", 7717 event, skb->len, ev->max_len); 7718 7719 data = hci_ev_skb_pull(hdev, skb, event, ev->min_len); 7720 if (!data) 7721 return; 7722 7723 if (ev->req) 7724 ev->func_req(hdev, data, skb, opcode, status, req_complete, 7725 req_complete_skb); 7726 else 7727 ev->func(hdev, data, skb); 7728 } 7729 7730 void hci_event_packet(struct hci_dev *hdev, struct sk_buff *skb) 7731 { 7732 struct hci_event_hdr *hdr = (void *) skb->data; 7733 hci_req_complete_t req_complete = NULL; 7734 hci_req_complete_skb_t req_complete_skb = NULL; 7735 struct sk_buff *orig_skb = NULL; 7736 u8 status = 0, event, req_evt = 0; 7737 u16 opcode = HCI_OP_NOP; 7738 7739 if (skb->len < sizeof(*hdr)) { 7740 bt_dev_err(hdev, "Malformed HCI Event"); 7741 goto done; 7742 } 7743 7744 kfree_skb(hdev->recv_event); 7745 hdev->recv_event = skb_clone(skb, GFP_KERNEL); 7746 7747 event = hdr->evt; 7748 if (!event) { 7749 bt_dev_warn(hdev, "Received unexpected HCI Event 0x%2.2x", 7750 event); 7751 goto done; 7752 } 7753 7754 /* Only match event if command OGF is not for LE */ 7755 if (hdev->req_skb && 7756 hci_opcode_ogf(hci_skb_opcode(hdev->req_skb)) != 0x08 && 7757 hci_skb_event(hdev->req_skb) == event) { 7758 hci_req_cmd_complete(hdev, hci_skb_opcode(hdev->req_skb), 7759 status, &req_complete, &req_complete_skb); 7760 req_evt = event; 7761 } 7762 7763 /* If it looks like we might end up having to call 7764 * req_complete_skb, store a pristine copy of the skb since the 7765 * various handlers may modify the original one through 7766 * skb_pull() calls, etc. 7767 */ 7768 if (req_complete_skb || event == HCI_EV_CMD_STATUS || 7769 event == HCI_EV_CMD_COMPLETE) 7770 orig_skb = skb_clone(skb, GFP_KERNEL); 7771 7772 skb_pull(skb, HCI_EVENT_HDR_SIZE); 7773 7774 /* Store wake reason if we're suspended */ 7775 hci_store_wake_reason(hdev, event, skb); 7776 7777 bt_dev_dbg(hdev, "event 0x%2.2x", event); 7778 7779 hci_event_func(hdev, event, skb, &opcode, &status, &req_complete, 7780 &req_complete_skb); 7781 7782 if (req_complete) { 7783 req_complete(hdev, status, opcode); 7784 } else if (req_complete_skb) { 7785 if (!hci_get_cmd_complete(hdev, opcode, req_evt, orig_skb)) { 7786 kfree_skb(orig_skb); 7787 orig_skb = NULL; 7788 } 7789 req_complete_skb(hdev, status, opcode, orig_skb); 7790 } 7791 7792 done: 7793 kfree_skb(orig_skb); 7794 kfree_skb(skb); 7795 hdev->stat.evt_rx++; 7796 } 7797