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 50static 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 62static 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 74static 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 86static 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 126static 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 141static 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 158static 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 168static 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 190static 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 212static 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 239static 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 254static 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 274static 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 309static 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 329static 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 350static 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 374static 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 391static 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 422static 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 448static 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 480done: 481 hci_dev_unlock(hdev); 482 483 return rp->status; 484} 485 486static 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 512static 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 533static 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 558static 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 584static 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 615static 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 632static 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 665static 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 698static 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 720static 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 769done: 770 hci_dev_unlock(hdev); 771 772 return status; 773} 774 775static 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 792static 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 814static 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 838unlock: 839 hci_dev_unlock(hdev); 840 841 return rp->status; 842} 843 844static 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 896static 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 920static 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 935static 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 964static 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 983static 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 1002static 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 1020static 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 1041static 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 1057static 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 1075static 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 1097static 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 1126unlock: 1127 hci_dev_unlock(hdev); 1128 return rp->status; 1129} 1130 1131static 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 1155static 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 1170static 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 1185static 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 1205static 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 1230unlock: 1231 hci_dev_unlock(hdev); 1232 return rp->status; 1233} 1234 1235static 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 1253static 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 1273static 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 1288static 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 1303static 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 1321static 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 1339static 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 1357static 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 1375static 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 1385static 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 1395static 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 1425static 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 1450static 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 1488static 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 1516static 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 1547static 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 1563static 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 1590static 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 1629static 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 1689unlock: 1690 hci_dev_unlock(hdev); 1691 return rp->status; 1692} 1693 1694static 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 1718static 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 1745static 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 1752static 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 1760static 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 1777static 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 1833static 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 1853static 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 1873static 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 1889static 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 1904static 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 1921static 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 1944static 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 1967static 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 1982static 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 1998static 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 2019static 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 2043static 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 2066static 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 2083static 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 2098static 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 2125static 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 2143static 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 2179static 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 2201static 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 2235static 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 2257static 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 2288unlock: 2289 hci_dev_unlock(hdev); 2290 return rp->status; 2291} 2292 2293static 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 2311static 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 2324static 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 2362static 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 2399static 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 2426static 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 2453static 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 2475static 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 2490static 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 2516static 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 2556discov_complete: 2557 hci_discovery_set_state(hdev, DISCOVERY_STOPPED); 2558} 2559 2560static 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 2599unlock: 2600 hci_dev_unlock(hdev); 2601} 2602 2603static 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 2630static 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 2657static 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 2682static 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 2698static 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 2714static 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 2741static 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 2768static 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 2839done: 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); 2846unlock: 2847 hci_dev_unlock(hdev); 2848} 2849 2850static 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 2872static 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 2899static 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 2924static 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 2949static 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 2976static 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 3002unlock: 3003 hci_dev_unlock(hdev); 3004} 3005 3006static 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 3029static 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 3086unlock: 3087 hci_dev_unlock(hdev); 3088} 3089 3090static 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 3134static 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 /* Get remote features */ 3223 if (conn->type == ACL_LINK) { 3224 struct hci_cp_read_remote_features cp; 3225 cp.handle = ev->handle; 3226 hci_send_cmd(hdev, HCI_OP_READ_REMOTE_FEATURES, 3227 sizeof(cp), &cp); 3228 3229 hci_update_scan(hdev); 3230 } 3231 3232 /* Set packet type for incoming connection */ 3233 if (!conn->out && hdev->hci_ver < BLUETOOTH_VER_2_0) { 3234 struct hci_cp_change_conn_ptype cp; 3235 cp.handle = ev->handle; 3236 cp.pkt_type = cpu_to_le16(conn->pkt_type); 3237 hci_send_cmd(hdev, HCI_OP_CHANGE_CONN_PTYPE, sizeof(cp), 3238 &cp); 3239 } 3240 } 3241 3242 if (conn->type == ACL_LINK) 3243 hci_sco_setup(conn, ev->status); 3244 3245done: 3246 if (status) { 3247 hci_conn_failed(conn, status); 3248 } else if (ev->link_type == SCO_LINK) { 3249 switch (conn->setting & SCO_AIRMODE_MASK) { 3250 case SCO_AIRMODE_CVSD: 3251 if (hdev->notify) 3252 hdev->notify(hdev, HCI_NOTIFY_ENABLE_SCO_CVSD); 3253 break; 3254 } 3255 3256 hci_connect_cfm(conn, status); 3257 } 3258 3259unlock: 3260 hci_dev_unlock(hdev); 3261 3262 hci_conn_check_pending(hdev); 3263} 3264 3265static void hci_reject_conn(struct hci_dev *hdev, bdaddr_t *bdaddr) 3266{ 3267 struct hci_cp_reject_conn_req cp; 3268 3269 bacpy(&cp.bdaddr, bdaddr); 3270 cp.reason = HCI_ERROR_REJ_BAD_ADDR; 3271 hci_send_cmd(hdev, HCI_OP_REJECT_CONN_REQ, sizeof(cp), &cp); 3272} 3273 3274static void hci_conn_request_evt(struct hci_dev *hdev, void *data, 3275 struct sk_buff *skb) 3276{ 3277 struct hci_ev_conn_request *ev = data; 3278 int mask = hdev->link_mode; 3279 struct inquiry_entry *ie; 3280 struct hci_conn *conn; 3281 __u8 flags = 0; 3282 3283 bt_dev_dbg(hdev, "bdaddr %pMR type 0x%x", &ev->bdaddr, ev->link_type); 3284 3285 /* Reject incoming connection from device with same BD ADDR against 3286 * CVE-2020-26555 3287 */ 3288 if (hdev && !bacmp(&hdev->bdaddr, &ev->bdaddr)) { 3289 bt_dev_dbg(hdev, "Reject connection with same BD_ADDR %pMR\n", 3290 &ev->bdaddr); 3291 hci_reject_conn(hdev, &ev->bdaddr); 3292 return; 3293 } 3294 3295 mask |= hci_proto_connect_ind(hdev, &ev->bdaddr, ev->link_type, 3296 &flags); 3297 3298 if (!(mask & HCI_LM_ACCEPT)) { 3299 hci_reject_conn(hdev, &ev->bdaddr); 3300 return; 3301 } 3302 3303 hci_dev_lock(hdev); 3304 3305 if (hci_bdaddr_list_lookup(&hdev->reject_list, &ev->bdaddr, 3306 BDADDR_BREDR)) { 3307 hci_reject_conn(hdev, &ev->bdaddr); 3308 goto unlock; 3309 } 3310 3311 /* Require HCI_CONNECTABLE or an accept list entry to accept the 3312 * connection. These features are only touched through mgmt so 3313 * only do the checks if HCI_MGMT is set. 3314 */ 3315 if (hci_dev_test_flag(hdev, HCI_MGMT) && 3316 !hci_dev_test_flag(hdev, HCI_CONNECTABLE) && 3317 !hci_bdaddr_list_lookup_with_flags(&hdev->accept_list, &ev->bdaddr, 3318 BDADDR_BREDR)) { 3319 hci_reject_conn(hdev, &ev->bdaddr); 3320 goto unlock; 3321 } 3322 3323 /* Connection accepted */ 3324 3325 ie = hci_inquiry_cache_lookup(hdev, &ev->bdaddr); 3326 if (ie) 3327 memcpy(ie->data.dev_class, ev->dev_class, 3); 3328 3329 conn = hci_conn_hash_lookup_ba(hdev, ev->link_type, 3330 &ev->bdaddr); 3331 if (!conn) { 3332 conn = hci_conn_add_unset(hdev, ev->link_type, &ev->bdaddr, 3333 HCI_ROLE_SLAVE); 3334 if (!conn) { 3335 bt_dev_err(hdev, "no memory for new connection"); 3336 goto unlock; 3337 } 3338 } 3339 3340 memcpy(conn->dev_class, ev->dev_class, 3); 3341 3342 hci_dev_unlock(hdev); 3343 3344 if (ev->link_type == ACL_LINK || 3345 (!(flags & HCI_PROTO_DEFER) && !lmp_esco_capable(hdev))) { 3346 struct hci_cp_accept_conn_req cp; 3347 conn->state = BT_CONNECT; 3348 3349 bacpy(&cp.bdaddr, &ev->bdaddr); 3350 3351 if (lmp_rswitch_capable(hdev) && (mask & HCI_LM_MASTER)) 3352 cp.role = 0x00; /* Become central */ 3353 else 3354 cp.role = 0x01; /* Remain peripheral */ 3355 3356 hci_send_cmd(hdev, HCI_OP_ACCEPT_CONN_REQ, sizeof(cp), &cp); 3357 } else if (!(flags & HCI_PROTO_DEFER)) { 3358 struct hci_cp_accept_sync_conn_req cp; 3359 conn->state = BT_CONNECT; 3360 3361 bacpy(&cp.bdaddr, &ev->bdaddr); 3362 cp.pkt_type = cpu_to_le16(conn->pkt_type); 3363 3364 cp.tx_bandwidth = cpu_to_le32(0x00001f40); 3365 cp.rx_bandwidth = cpu_to_le32(0x00001f40); 3366 cp.max_latency = cpu_to_le16(0xffff); 3367 cp.content_format = cpu_to_le16(hdev->voice_setting); 3368 cp.retrans_effort = 0xff; 3369 3370 hci_send_cmd(hdev, HCI_OP_ACCEPT_SYNC_CONN_REQ, sizeof(cp), 3371 &cp); 3372 } else { 3373 conn->state = BT_CONNECT2; 3374 hci_connect_cfm(conn, 0); 3375 } 3376 3377 return; 3378unlock: 3379 hci_dev_unlock(hdev); 3380} 3381 3382static u8 hci_to_mgmt_reason(u8 err) 3383{ 3384 switch (err) { 3385 case HCI_ERROR_CONNECTION_TIMEOUT: 3386 return MGMT_DEV_DISCONN_TIMEOUT; 3387 case HCI_ERROR_REMOTE_USER_TERM: 3388 case HCI_ERROR_REMOTE_LOW_RESOURCES: 3389 case HCI_ERROR_REMOTE_POWER_OFF: 3390 return MGMT_DEV_DISCONN_REMOTE; 3391 case HCI_ERROR_LOCAL_HOST_TERM: 3392 return MGMT_DEV_DISCONN_LOCAL_HOST; 3393 default: 3394 return MGMT_DEV_DISCONN_UNKNOWN; 3395 } 3396} 3397 3398static void hci_disconn_complete_evt(struct hci_dev *hdev, void *data, 3399 struct sk_buff *skb) 3400{ 3401 struct hci_ev_disconn_complete *ev = data; 3402 u8 reason; 3403 struct hci_conn_params *params; 3404 struct hci_conn *conn; 3405 bool mgmt_connected; 3406 3407 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 3408 3409 hci_dev_lock(hdev); 3410 3411 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle)); 3412 if (!conn) 3413 goto unlock; 3414 3415 if (ev->status) { 3416 mgmt_disconnect_failed(hdev, &conn->dst, conn->type, 3417 conn->dst_type, ev->status); 3418 goto unlock; 3419 } 3420 3421 conn->state = BT_CLOSED; 3422 3423 mgmt_connected = test_and_clear_bit(HCI_CONN_MGMT_CONNECTED, &conn->flags); 3424 3425 if (test_bit(HCI_CONN_AUTH_FAILURE, &conn->flags)) 3426 reason = MGMT_DEV_DISCONN_AUTH_FAILURE; 3427 else 3428 reason = hci_to_mgmt_reason(ev->reason); 3429 3430 mgmt_device_disconnected(hdev, &conn->dst, conn->type, conn->dst_type, 3431 reason, mgmt_connected); 3432 3433 if (conn->type == ACL_LINK) { 3434 if (test_and_clear_bit(HCI_CONN_FLUSH_KEY, &conn->flags)) 3435 hci_remove_link_key(hdev, &conn->dst); 3436 3437 hci_update_scan(hdev); 3438 } 3439 3440 params = hci_conn_params_lookup(hdev, &conn->dst, conn->dst_type); 3441 if (params) { 3442 switch (params->auto_connect) { 3443 case HCI_AUTO_CONN_LINK_LOSS: 3444 if (ev->reason != HCI_ERROR_CONNECTION_TIMEOUT) 3445 break; 3446 fallthrough; 3447 3448 case HCI_AUTO_CONN_DIRECT: 3449 case HCI_AUTO_CONN_ALWAYS: 3450 hci_pend_le_list_del_init(params); 3451 hci_pend_le_list_add(params, &hdev->pend_le_conns); 3452 hci_update_passive_scan(hdev); 3453 break; 3454 3455 default: 3456 break; 3457 } 3458 } 3459 3460 hci_disconn_cfm(conn, ev->reason); 3461 3462 /* Re-enable advertising if necessary, since it might 3463 * have been disabled by the connection. From the 3464 * HCI_LE_Set_Advertise_Enable command description in 3465 * the core specification (v4.0): 3466 * "The Controller shall continue advertising until the Host 3467 * issues an LE_Set_Advertise_Enable command with 3468 * Advertising_Enable set to 0x00 (Advertising is disabled) 3469 * or until a connection is created or until the Advertising 3470 * is timed out due to Directed Advertising." 3471 */ 3472 if (conn->type == LE_LINK && conn->role == HCI_ROLE_SLAVE) { 3473 hdev->cur_adv_instance = conn->adv_instance; 3474 hci_enable_advertising(hdev); 3475 } 3476 3477 hci_conn_del(conn); 3478 3479unlock: 3480 hci_dev_unlock(hdev); 3481} 3482 3483static void hci_auth_complete_evt(struct hci_dev *hdev, void *data, 3484 struct sk_buff *skb) 3485{ 3486 struct hci_ev_auth_complete *ev = data; 3487 struct hci_conn *conn; 3488 3489 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 3490 3491 hci_dev_lock(hdev); 3492 3493 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle)); 3494 if (!conn) 3495 goto unlock; 3496 3497 if (!ev->status) { 3498 clear_bit(HCI_CONN_AUTH_FAILURE, &conn->flags); 3499 set_bit(HCI_CONN_AUTH, &conn->flags); 3500 conn->sec_level = conn->pending_sec_level; 3501 } else { 3502 if (ev->status == HCI_ERROR_PIN_OR_KEY_MISSING) 3503 set_bit(HCI_CONN_AUTH_FAILURE, &conn->flags); 3504 3505 mgmt_auth_failed(conn, ev->status); 3506 } 3507 3508 clear_bit(HCI_CONN_AUTH_PEND, &conn->flags); 3509 3510 if (conn->state == BT_CONFIG) { 3511 if (!ev->status && hci_conn_ssp_enabled(conn)) { 3512 struct hci_cp_set_conn_encrypt cp; 3513 cp.handle = ev->handle; 3514 cp.encrypt = 0x01; 3515 hci_send_cmd(hdev, HCI_OP_SET_CONN_ENCRYPT, sizeof(cp), 3516 &cp); 3517 } else { 3518 conn->state = BT_CONNECTED; 3519 hci_connect_cfm(conn, ev->status); 3520 hci_conn_drop(conn); 3521 } 3522 } else { 3523 hci_auth_cfm(conn, ev->status); 3524 3525 hci_conn_hold(conn); 3526 conn->disc_timeout = HCI_DISCONN_TIMEOUT; 3527 hci_conn_drop(conn); 3528 } 3529 3530 if (test_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags)) { 3531 if (!ev->status) { 3532 struct hci_cp_set_conn_encrypt cp; 3533 cp.handle = ev->handle; 3534 cp.encrypt = 0x01; 3535 hci_send_cmd(hdev, HCI_OP_SET_CONN_ENCRYPT, sizeof(cp), 3536 &cp); 3537 } else { 3538 clear_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags); 3539 hci_encrypt_cfm(conn, ev->status); 3540 } 3541 } 3542 3543unlock: 3544 hci_dev_unlock(hdev); 3545} 3546 3547static void hci_remote_name_evt(struct hci_dev *hdev, void *data, 3548 struct sk_buff *skb) 3549{ 3550 struct hci_ev_remote_name *ev = data; 3551 struct hci_conn *conn; 3552 3553 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 3554 3555 hci_dev_lock(hdev); 3556 3557 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr); 3558 3559 if (!hci_dev_test_flag(hdev, HCI_MGMT)) 3560 goto check_auth; 3561 3562 if (ev->status == 0) 3563 hci_check_pending_name(hdev, conn, &ev->bdaddr, ev->name, 3564 strnlen(ev->name, HCI_MAX_NAME_LENGTH)); 3565 else 3566 hci_check_pending_name(hdev, conn, &ev->bdaddr, NULL, 0); 3567 3568check_auth: 3569 if (!conn) 3570 goto unlock; 3571 3572 if (!hci_outgoing_auth_needed(hdev, conn)) 3573 goto unlock; 3574 3575 if (!test_and_set_bit(HCI_CONN_AUTH_PEND, &conn->flags)) { 3576 struct hci_cp_auth_requested cp; 3577 3578 set_bit(HCI_CONN_AUTH_INITIATOR, &conn->flags); 3579 3580 cp.handle = __cpu_to_le16(conn->handle); 3581 hci_send_cmd(hdev, HCI_OP_AUTH_REQUESTED, sizeof(cp), &cp); 3582 } 3583 3584unlock: 3585 hci_dev_unlock(hdev); 3586} 3587 3588static void hci_encrypt_change_evt(struct hci_dev *hdev, void *data, 3589 struct sk_buff *skb) 3590{ 3591 struct hci_ev_encrypt_change *ev = data; 3592 struct hci_conn *conn; 3593 3594 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 3595 3596 hci_dev_lock(hdev); 3597 3598 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle)); 3599 if (!conn) 3600 goto unlock; 3601 3602 if (!ev->status) { 3603 if (ev->encrypt) { 3604 /* Encryption implies authentication */ 3605 set_bit(HCI_CONN_AUTH, &conn->flags); 3606 set_bit(HCI_CONN_ENCRYPT, &conn->flags); 3607 conn->sec_level = conn->pending_sec_level; 3608 3609 /* P-256 authentication key implies FIPS */ 3610 if (conn->key_type == HCI_LK_AUTH_COMBINATION_P256) 3611 set_bit(HCI_CONN_FIPS, &conn->flags); 3612 3613 if ((conn->type == ACL_LINK && ev->encrypt == 0x02) || 3614 conn->type == LE_LINK) 3615 set_bit(HCI_CONN_AES_CCM, &conn->flags); 3616 } else { 3617 clear_bit(HCI_CONN_ENCRYPT, &conn->flags); 3618 clear_bit(HCI_CONN_AES_CCM, &conn->flags); 3619 } 3620 } 3621 3622 /* We should disregard the current RPA and generate a new one 3623 * whenever the encryption procedure fails. 3624 */ 3625 if (ev->status && conn->type == LE_LINK) { 3626 hci_dev_set_flag(hdev, HCI_RPA_EXPIRED); 3627 hci_adv_instances_set_rpa_expired(hdev, true); 3628 } 3629 3630 clear_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags); 3631 3632 /* Check link security requirements are met */ 3633 if (!hci_conn_check_link_mode(conn)) 3634 ev->status = HCI_ERROR_AUTH_FAILURE; 3635 3636 if (ev->status && conn->state == BT_CONNECTED) { 3637 if (ev->status == HCI_ERROR_PIN_OR_KEY_MISSING) 3638 set_bit(HCI_CONN_AUTH_FAILURE, &conn->flags); 3639 3640 /* Notify upper layers so they can cleanup before 3641 * disconnecting. 3642 */ 3643 hci_encrypt_cfm(conn, ev->status); 3644 hci_disconnect(conn, HCI_ERROR_AUTH_FAILURE); 3645 hci_conn_drop(conn); 3646 goto unlock; 3647 } 3648 3649 /* Try reading the encryption key size for encrypted ACL links */ 3650 if (!ev->status && ev->encrypt && conn->type == ACL_LINK) { 3651 struct hci_cp_read_enc_key_size cp; 3652 3653 /* Only send HCI_Read_Encryption_Key_Size if the 3654 * controller really supports it. If it doesn't, assume 3655 * the default size (16). 3656 */ 3657 if (!(hdev->commands[20] & 0x10)) { 3658 conn->enc_key_size = HCI_LINK_KEY_SIZE; 3659 goto notify; 3660 } 3661 3662 cp.handle = cpu_to_le16(conn->handle); 3663 if (hci_send_cmd(hdev, HCI_OP_READ_ENC_KEY_SIZE, 3664 sizeof(cp), &cp)) { 3665 bt_dev_err(hdev, "sending read key size failed"); 3666 conn->enc_key_size = HCI_LINK_KEY_SIZE; 3667 goto notify; 3668 } 3669 3670 goto unlock; 3671 } 3672 3673 /* Set the default Authenticated Payload Timeout after 3674 * an LE Link is established. As per Core Spec v5.0, Vol 2, Part B 3675 * Section 3.3, the HCI command WRITE_AUTH_PAYLOAD_TIMEOUT should be 3676 * sent when the link is active and Encryption is enabled, the conn 3677 * type can be either LE or ACL and controller must support LMP Ping. 3678 * Ensure for AES-CCM encryption as well. 3679 */ 3680 if (test_bit(HCI_CONN_ENCRYPT, &conn->flags) && 3681 test_bit(HCI_CONN_AES_CCM, &conn->flags) && 3682 ((conn->type == ACL_LINK && lmp_ping_capable(hdev)) || 3683 (conn->type == LE_LINK && (hdev->le_features[0] & HCI_LE_PING)))) { 3684 struct hci_cp_write_auth_payload_to cp; 3685 3686 cp.handle = cpu_to_le16(conn->handle); 3687 cp.timeout = cpu_to_le16(hdev->auth_payload_timeout); 3688 if (hci_send_cmd(conn->hdev, HCI_OP_WRITE_AUTH_PAYLOAD_TO, 3689 sizeof(cp), &cp)) 3690 bt_dev_err(hdev, "write auth payload timeout failed"); 3691 } 3692 3693notify: 3694 hci_encrypt_cfm(conn, ev->status); 3695 3696unlock: 3697 hci_dev_unlock(hdev); 3698} 3699 3700static void hci_change_link_key_complete_evt(struct hci_dev *hdev, void *data, 3701 struct sk_buff *skb) 3702{ 3703 struct hci_ev_change_link_key_complete *ev = data; 3704 struct hci_conn *conn; 3705 3706 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 3707 3708 hci_dev_lock(hdev); 3709 3710 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle)); 3711 if (conn) { 3712 if (!ev->status) 3713 set_bit(HCI_CONN_SECURE, &conn->flags); 3714 3715 clear_bit(HCI_CONN_AUTH_PEND, &conn->flags); 3716 3717 hci_key_change_cfm(conn, ev->status); 3718 } 3719 3720 hci_dev_unlock(hdev); 3721} 3722 3723static void hci_remote_features_evt(struct hci_dev *hdev, void *data, 3724 struct sk_buff *skb) 3725{ 3726 struct hci_ev_remote_features *ev = data; 3727 struct hci_conn *conn; 3728 3729 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 3730 3731 hci_dev_lock(hdev); 3732 3733 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle)); 3734 if (!conn) 3735 goto unlock; 3736 3737 if (!ev->status) 3738 memcpy(conn->features[0], ev->features, 8); 3739 3740 if (conn->state != BT_CONFIG) 3741 goto unlock; 3742 3743 if (!ev->status && lmp_ext_feat_capable(hdev) && 3744 lmp_ext_feat_capable(conn)) { 3745 struct hci_cp_read_remote_ext_features cp; 3746 cp.handle = ev->handle; 3747 cp.page = 0x01; 3748 hci_send_cmd(hdev, HCI_OP_READ_REMOTE_EXT_FEATURES, 3749 sizeof(cp), &cp); 3750 goto unlock; 3751 } 3752 3753 if (!ev->status && !test_bit(HCI_CONN_MGMT_CONNECTED, &conn->flags)) { 3754 struct hci_cp_remote_name_req cp; 3755 memset(&cp, 0, sizeof(cp)); 3756 bacpy(&cp.bdaddr, &conn->dst); 3757 cp.pscan_rep_mode = 0x02; 3758 hci_send_cmd(hdev, HCI_OP_REMOTE_NAME_REQ, sizeof(cp), &cp); 3759 } else { 3760 mgmt_device_connected(hdev, conn, NULL, 0); 3761 } 3762 3763 if (!hci_outgoing_auth_needed(hdev, conn)) { 3764 conn->state = BT_CONNECTED; 3765 hci_connect_cfm(conn, ev->status); 3766 hci_conn_drop(conn); 3767 } 3768 3769unlock: 3770 hci_dev_unlock(hdev); 3771} 3772 3773static inline void handle_cmd_cnt_and_timer(struct hci_dev *hdev, u8 ncmd) 3774{ 3775 cancel_delayed_work(&hdev->cmd_timer); 3776 3777 rcu_read_lock(); 3778 if (!test_bit(HCI_RESET, &hdev->flags)) { 3779 if (ncmd) { 3780 cancel_delayed_work(&hdev->ncmd_timer); 3781 atomic_set(&hdev->cmd_cnt, 1); 3782 } else { 3783 if (!hci_dev_test_flag(hdev, HCI_CMD_DRAIN_WORKQUEUE)) 3784 queue_delayed_work(hdev->workqueue, &hdev->ncmd_timer, 3785 HCI_NCMD_TIMEOUT); 3786 } 3787 } 3788 rcu_read_unlock(); 3789} 3790 3791static u8 hci_cc_le_read_buffer_size_v2(struct hci_dev *hdev, void *data, 3792 struct sk_buff *skb) 3793{ 3794 struct hci_rp_le_read_buffer_size_v2 *rp = data; 3795 3796 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 3797 3798 if (rp->status) 3799 return rp->status; 3800 3801 hdev->le_mtu = __le16_to_cpu(rp->acl_mtu); 3802 hdev->le_pkts = rp->acl_max_pkt; 3803 hdev->iso_mtu = __le16_to_cpu(rp->iso_mtu); 3804 hdev->iso_pkts = rp->iso_max_pkt; 3805 3806 hdev->le_cnt = hdev->le_pkts; 3807 hdev->iso_cnt = hdev->iso_pkts; 3808 3809 BT_DBG("%s acl mtu %d:%d iso mtu %d:%d", hdev->name, hdev->acl_mtu, 3810 hdev->acl_pkts, hdev->iso_mtu, hdev->iso_pkts); 3811 3812 return rp->status; 3813} 3814 3815static void hci_unbound_cis_failed(struct hci_dev *hdev, u8 cig, u8 status) 3816{ 3817 struct hci_conn *conn, *tmp; 3818 3819 lockdep_assert_held(&hdev->lock); 3820 3821 list_for_each_entry_safe(conn, tmp, &hdev->conn_hash.list, list) { 3822 if (conn->type != ISO_LINK || !bacmp(&conn->dst, BDADDR_ANY) || 3823 conn->state == BT_OPEN || conn->iso_qos.ucast.cig != cig) 3824 continue; 3825 3826 if (HCI_CONN_HANDLE_UNSET(conn->handle)) 3827 hci_conn_failed(conn, status); 3828 } 3829} 3830 3831static u8 hci_cc_le_set_cig_params(struct hci_dev *hdev, void *data, 3832 struct sk_buff *skb) 3833{ 3834 struct hci_rp_le_set_cig_params *rp = data; 3835 struct hci_cp_le_set_cig_params *cp; 3836 struct hci_conn *conn; 3837 u8 status = rp->status; 3838 bool pending = false; 3839 int i; 3840 3841 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 3842 3843 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_CIG_PARAMS); 3844 if (!rp->status && (!cp || rp->num_handles != cp->num_cis || 3845 rp->cig_id != cp->cig_id)) { 3846 bt_dev_err(hdev, "unexpected Set CIG Parameters response data"); 3847 status = HCI_ERROR_UNSPECIFIED; 3848 } 3849 3850 hci_dev_lock(hdev); 3851 3852 /* BLUETOOTH CORE SPECIFICATION Version 5.4 | Vol 4, Part E page 2554 3853 * 3854 * If the Status return parameter is non-zero, then the state of the CIG 3855 * and its CIS configurations shall not be changed by the command. If 3856 * the CIG did not already exist, it shall not be created. 3857 */ 3858 if (status) { 3859 /* Keep current configuration, fail only the unbound CIS */ 3860 hci_unbound_cis_failed(hdev, rp->cig_id, status); 3861 goto unlock; 3862 } 3863 3864 /* BLUETOOTH CORE SPECIFICATION Version 5.3 | Vol 4, Part E page 2553 3865 * 3866 * If the Status return parameter is zero, then the Controller shall 3867 * set the Connection_Handle arrayed return parameter to the connection 3868 * handle(s) corresponding to the CIS configurations specified in 3869 * the CIS_IDs command parameter, in the same order. 3870 */ 3871 for (i = 0; i < rp->num_handles; ++i) { 3872 conn = hci_conn_hash_lookup_cis(hdev, NULL, 0, rp->cig_id, 3873 cp->cis[i].cis_id); 3874 if (!conn || !bacmp(&conn->dst, BDADDR_ANY)) 3875 continue; 3876 3877 if (conn->state != BT_BOUND && conn->state != BT_CONNECT) 3878 continue; 3879 3880 if (hci_conn_set_handle(conn, __le16_to_cpu(rp->handle[i]))) 3881 continue; 3882 3883 if (conn->state == BT_CONNECT) 3884 pending = true; 3885 } 3886 3887unlock: 3888 if (pending) 3889 hci_le_create_cis_pending(hdev); 3890 3891 hci_dev_unlock(hdev); 3892 3893 return rp->status; 3894} 3895 3896static u8 hci_cc_le_setup_iso_path(struct hci_dev *hdev, void *data, 3897 struct sk_buff *skb) 3898{ 3899 struct hci_rp_le_setup_iso_path *rp = data; 3900 struct hci_cp_le_setup_iso_path *cp; 3901 struct hci_conn *conn; 3902 3903 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 3904 3905 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SETUP_ISO_PATH); 3906 if (!cp) 3907 return rp->status; 3908 3909 hci_dev_lock(hdev); 3910 3911 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle)); 3912 if (!conn) 3913 goto unlock; 3914 3915 if (rp->status) { 3916 hci_connect_cfm(conn, rp->status); 3917 hci_conn_del(conn); 3918 goto unlock; 3919 } 3920 3921 switch (cp->direction) { 3922 /* Input (Host to Controller) */ 3923 case 0x00: 3924 /* Only confirm connection if output only */ 3925 if (conn->iso_qos.ucast.out.sdu && !conn->iso_qos.ucast.in.sdu) 3926 hci_connect_cfm(conn, rp->status); 3927 break; 3928 /* Output (Controller to Host) */ 3929 case 0x01: 3930 /* Confirm connection since conn->iso_qos is always configured 3931 * last. 3932 */ 3933 hci_connect_cfm(conn, rp->status); 3934 3935 /* Notify device connected in case it is a BIG Sync */ 3936 if (!rp->status && test_bit(HCI_CONN_BIG_SYNC, &conn->flags)) 3937 mgmt_device_connected(hdev, conn, NULL, 0); 3938 3939 break; 3940 } 3941 3942unlock: 3943 hci_dev_unlock(hdev); 3944 return rp->status; 3945} 3946 3947static void hci_cs_le_create_big(struct hci_dev *hdev, u8 status) 3948{ 3949 bt_dev_dbg(hdev, "status 0x%2.2x", status); 3950} 3951 3952static u8 hci_cc_set_per_adv_param(struct hci_dev *hdev, void *data, 3953 struct sk_buff *skb) 3954{ 3955 struct hci_ev_status *rp = data; 3956 struct hci_cp_le_set_per_adv_params *cp; 3957 3958 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 3959 3960 if (rp->status) 3961 return rp->status; 3962 3963 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_PER_ADV_PARAMS); 3964 if (!cp) 3965 return rp->status; 3966 3967 /* TODO: set the conn state */ 3968 return rp->status; 3969} 3970 3971static u8 hci_cc_le_set_per_adv_enable(struct hci_dev *hdev, void *data, 3972 struct sk_buff *skb) 3973{ 3974 struct hci_ev_status *rp = data; 3975 struct hci_cp_le_set_per_adv_enable *cp; 3976 struct adv_info *adv = NULL, *n; 3977 u8 per_adv_cnt = 0; 3978 3979 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 3980 3981 if (rp->status) 3982 return rp->status; 3983 3984 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_PER_ADV_ENABLE); 3985 if (!cp) 3986 return rp->status; 3987 3988 hci_dev_lock(hdev); 3989 3990 adv = hci_find_adv_instance(hdev, cp->handle); 3991 3992 if (cp->enable) { 3993 hci_dev_set_flag(hdev, HCI_LE_PER_ADV); 3994 3995 if (adv) 3996 adv->enabled = true; 3997 } else { 3998 /* If just one instance was disabled check if there are 3999 * any other instance enabled before clearing HCI_LE_PER_ADV. 4000 * The current periodic adv instance will be marked as 4001 * disabled once extended advertising is also disabled. 4002 */ 4003 list_for_each_entry_safe(adv, n, &hdev->adv_instances, 4004 list) { 4005 if (adv->periodic && adv->enabled) 4006 per_adv_cnt++; 4007 } 4008 4009 if (per_adv_cnt > 1) 4010 goto unlock; 4011 4012 hci_dev_clear_flag(hdev, HCI_LE_PER_ADV); 4013 } 4014 4015unlock: 4016 hci_dev_unlock(hdev); 4017 4018 return rp->status; 4019} 4020 4021#define HCI_CC_VL(_op, _func, _min, _max) \ 4022{ \ 4023 .op = _op, \ 4024 .func = _func, \ 4025 .min_len = _min, \ 4026 .max_len = _max, \ 4027} 4028 4029#define HCI_CC(_op, _func, _len) \ 4030 HCI_CC_VL(_op, _func, _len, _len) 4031 4032#define HCI_CC_STATUS(_op, _func) \ 4033 HCI_CC(_op, _func, sizeof(struct hci_ev_status)) 4034 4035static const struct hci_cc { 4036 u16 op; 4037 u8 (*func)(struct hci_dev *hdev, void *data, struct sk_buff *skb); 4038 u16 min_len; 4039 u16 max_len; 4040} hci_cc_table[] = { 4041 HCI_CC_STATUS(HCI_OP_INQUIRY_CANCEL, hci_cc_inquiry_cancel), 4042 HCI_CC_STATUS(HCI_OP_PERIODIC_INQ, hci_cc_periodic_inq), 4043 HCI_CC_STATUS(HCI_OP_EXIT_PERIODIC_INQ, hci_cc_exit_periodic_inq), 4044 HCI_CC_STATUS(HCI_OP_REMOTE_NAME_REQ_CANCEL, 4045 hci_cc_remote_name_req_cancel), 4046 HCI_CC(HCI_OP_ROLE_DISCOVERY, hci_cc_role_discovery, 4047 sizeof(struct hci_rp_role_discovery)), 4048 HCI_CC(HCI_OP_READ_LINK_POLICY, hci_cc_read_link_policy, 4049 sizeof(struct hci_rp_read_link_policy)), 4050 HCI_CC(HCI_OP_WRITE_LINK_POLICY, hci_cc_write_link_policy, 4051 sizeof(struct hci_rp_write_link_policy)), 4052 HCI_CC(HCI_OP_READ_DEF_LINK_POLICY, hci_cc_read_def_link_policy, 4053 sizeof(struct hci_rp_read_def_link_policy)), 4054 HCI_CC_STATUS(HCI_OP_WRITE_DEF_LINK_POLICY, 4055 hci_cc_write_def_link_policy), 4056 HCI_CC_STATUS(HCI_OP_RESET, hci_cc_reset), 4057 HCI_CC(HCI_OP_READ_STORED_LINK_KEY, hci_cc_read_stored_link_key, 4058 sizeof(struct hci_rp_read_stored_link_key)), 4059 HCI_CC(HCI_OP_DELETE_STORED_LINK_KEY, hci_cc_delete_stored_link_key, 4060 sizeof(struct hci_rp_delete_stored_link_key)), 4061 HCI_CC_STATUS(HCI_OP_WRITE_LOCAL_NAME, hci_cc_write_local_name), 4062 HCI_CC(HCI_OP_READ_LOCAL_NAME, hci_cc_read_local_name, 4063 sizeof(struct hci_rp_read_local_name)), 4064 HCI_CC_STATUS(HCI_OP_WRITE_AUTH_ENABLE, hci_cc_write_auth_enable), 4065 HCI_CC_STATUS(HCI_OP_WRITE_ENCRYPT_MODE, hci_cc_write_encrypt_mode), 4066 HCI_CC_STATUS(HCI_OP_WRITE_SCAN_ENABLE, hci_cc_write_scan_enable), 4067 HCI_CC_STATUS(HCI_OP_SET_EVENT_FLT, hci_cc_set_event_filter), 4068 HCI_CC(HCI_OP_READ_CLASS_OF_DEV, hci_cc_read_class_of_dev, 4069 sizeof(struct hci_rp_read_class_of_dev)), 4070 HCI_CC_STATUS(HCI_OP_WRITE_CLASS_OF_DEV, hci_cc_write_class_of_dev), 4071 HCI_CC(HCI_OP_READ_VOICE_SETTING, hci_cc_read_voice_setting, 4072 sizeof(struct hci_rp_read_voice_setting)), 4073 HCI_CC_STATUS(HCI_OP_WRITE_VOICE_SETTING, hci_cc_write_voice_setting), 4074 HCI_CC(HCI_OP_READ_NUM_SUPPORTED_IAC, hci_cc_read_num_supported_iac, 4075 sizeof(struct hci_rp_read_num_supported_iac)), 4076 HCI_CC_STATUS(HCI_OP_WRITE_SSP_MODE, hci_cc_write_ssp_mode), 4077 HCI_CC_STATUS(HCI_OP_WRITE_SC_SUPPORT, hci_cc_write_sc_support), 4078 HCI_CC(HCI_OP_READ_AUTH_PAYLOAD_TO, hci_cc_read_auth_payload_timeout, 4079 sizeof(struct hci_rp_read_auth_payload_to)), 4080 HCI_CC(HCI_OP_WRITE_AUTH_PAYLOAD_TO, hci_cc_write_auth_payload_timeout, 4081 sizeof(struct hci_rp_write_auth_payload_to)), 4082 HCI_CC(HCI_OP_READ_LOCAL_VERSION, hci_cc_read_local_version, 4083 sizeof(struct hci_rp_read_local_version)), 4084 HCI_CC(HCI_OP_READ_LOCAL_COMMANDS, hci_cc_read_local_commands, 4085 sizeof(struct hci_rp_read_local_commands)), 4086 HCI_CC(HCI_OP_READ_LOCAL_FEATURES, hci_cc_read_local_features, 4087 sizeof(struct hci_rp_read_local_features)), 4088 HCI_CC(HCI_OP_READ_LOCAL_EXT_FEATURES, hci_cc_read_local_ext_features, 4089 sizeof(struct hci_rp_read_local_ext_features)), 4090 HCI_CC(HCI_OP_READ_BUFFER_SIZE, hci_cc_read_buffer_size, 4091 sizeof(struct hci_rp_read_buffer_size)), 4092 HCI_CC(HCI_OP_READ_BD_ADDR, hci_cc_read_bd_addr, 4093 sizeof(struct hci_rp_read_bd_addr)), 4094 HCI_CC(HCI_OP_READ_LOCAL_PAIRING_OPTS, hci_cc_read_local_pairing_opts, 4095 sizeof(struct hci_rp_read_local_pairing_opts)), 4096 HCI_CC(HCI_OP_READ_PAGE_SCAN_ACTIVITY, hci_cc_read_page_scan_activity, 4097 sizeof(struct hci_rp_read_page_scan_activity)), 4098 HCI_CC_STATUS(HCI_OP_WRITE_PAGE_SCAN_ACTIVITY, 4099 hci_cc_write_page_scan_activity), 4100 HCI_CC(HCI_OP_READ_PAGE_SCAN_TYPE, hci_cc_read_page_scan_type, 4101 sizeof(struct hci_rp_read_page_scan_type)), 4102 HCI_CC_STATUS(HCI_OP_WRITE_PAGE_SCAN_TYPE, hci_cc_write_page_scan_type), 4103 HCI_CC(HCI_OP_READ_DATA_BLOCK_SIZE, hci_cc_read_data_block_size, 4104 sizeof(struct hci_rp_read_data_block_size)), 4105 HCI_CC(HCI_OP_READ_FLOW_CONTROL_MODE, hci_cc_read_flow_control_mode, 4106 sizeof(struct hci_rp_read_flow_control_mode)), 4107 HCI_CC(HCI_OP_READ_LOCAL_AMP_INFO, hci_cc_read_local_amp_info, 4108 sizeof(struct hci_rp_read_local_amp_info)), 4109 HCI_CC(HCI_OP_READ_CLOCK, hci_cc_read_clock, 4110 sizeof(struct hci_rp_read_clock)), 4111 HCI_CC(HCI_OP_READ_ENC_KEY_SIZE, hci_cc_read_enc_key_size, 4112 sizeof(struct hci_rp_read_enc_key_size)), 4113 HCI_CC(HCI_OP_READ_INQ_RSP_TX_POWER, hci_cc_read_inq_rsp_tx_power, 4114 sizeof(struct hci_rp_read_inq_rsp_tx_power)), 4115 HCI_CC(HCI_OP_READ_DEF_ERR_DATA_REPORTING, 4116 hci_cc_read_def_err_data_reporting, 4117 sizeof(struct hci_rp_read_def_err_data_reporting)), 4118 HCI_CC_STATUS(HCI_OP_WRITE_DEF_ERR_DATA_REPORTING, 4119 hci_cc_write_def_err_data_reporting), 4120 HCI_CC(HCI_OP_PIN_CODE_REPLY, hci_cc_pin_code_reply, 4121 sizeof(struct hci_rp_pin_code_reply)), 4122 HCI_CC(HCI_OP_PIN_CODE_NEG_REPLY, hci_cc_pin_code_neg_reply, 4123 sizeof(struct hci_rp_pin_code_neg_reply)), 4124 HCI_CC(HCI_OP_READ_LOCAL_OOB_DATA, hci_cc_read_local_oob_data, 4125 sizeof(struct hci_rp_read_local_oob_data)), 4126 HCI_CC(HCI_OP_READ_LOCAL_OOB_EXT_DATA, hci_cc_read_local_oob_ext_data, 4127 sizeof(struct hci_rp_read_local_oob_ext_data)), 4128 HCI_CC(HCI_OP_LE_READ_BUFFER_SIZE, hci_cc_le_read_buffer_size, 4129 sizeof(struct hci_rp_le_read_buffer_size)), 4130 HCI_CC(HCI_OP_LE_READ_LOCAL_FEATURES, hci_cc_le_read_local_features, 4131 sizeof(struct hci_rp_le_read_local_features)), 4132 HCI_CC(HCI_OP_LE_READ_ADV_TX_POWER, hci_cc_le_read_adv_tx_power, 4133 sizeof(struct hci_rp_le_read_adv_tx_power)), 4134 HCI_CC(HCI_OP_USER_CONFIRM_REPLY, hci_cc_user_confirm_reply, 4135 sizeof(struct hci_rp_user_confirm_reply)), 4136 HCI_CC(HCI_OP_USER_CONFIRM_NEG_REPLY, hci_cc_user_confirm_neg_reply, 4137 sizeof(struct hci_rp_user_confirm_reply)), 4138 HCI_CC(HCI_OP_USER_PASSKEY_REPLY, hci_cc_user_passkey_reply, 4139 sizeof(struct hci_rp_user_confirm_reply)), 4140 HCI_CC(HCI_OP_USER_PASSKEY_NEG_REPLY, hci_cc_user_passkey_neg_reply, 4141 sizeof(struct hci_rp_user_confirm_reply)), 4142 HCI_CC_STATUS(HCI_OP_LE_SET_RANDOM_ADDR, hci_cc_le_set_random_addr), 4143 HCI_CC_STATUS(HCI_OP_LE_SET_ADV_ENABLE, hci_cc_le_set_adv_enable), 4144 HCI_CC_STATUS(HCI_OP_LE_SET_SCAN_PARAM, hci_cc_le_set_scan_param), 4145 HCI_CC_STATUS(HCI_OP_LE_SET_SCAN_ENABLE, hci_cc_le_set_scan_enable), 4146 HCI_CC(HCI_OP_LE_READ_ACCEPT_LIST_SIZE, 4147 hci_cc_le_read_accept_list_size, 4148 sizeof(struct hci_rp_le_read_accept_list_size)), 4149 HCI_CC_STATUS(HCI_OP_LE_CLEAR_ACCEPT_LIST, hci_cc_le_clear_accept_list), 4150 HCI_CC_STATUS(HCI_OP_LE_ADD_TO_ACCEPT_LIST, 4151 hci_cc_le_add_to_accept_list), 4152 HCI_CC_STATUS(HCI_OP_LE_DEL_FROM_ACCEPT_LIST, 4153 hci_cc_le_del_from_accept_list), 4154 HCI_CC(HCI_OP_LE_READ_SUPPORTED_STATES, hci_cc_le_read_supported_states, 4155 sizeof(struct hci_rp_le_read_supported_states)), 4156 HCI_CC(HCI_OP_LE_READ_DEF_DATA_LEN, hci_cc_le_read_def_data_len, 4157 sizeof(struct hci_rp_le_read_def_data_len)), 4158 HCI_CC_STATUS(HCI_OP_LE_WRITE_DEF_DATA_LEN, 4159 hci_cc_le_write_def_data_len), 4160 HCI_CC_STATUS(HCI_OP_LE_ADD_TO_RESOLV_LIST, 4161 hci_cc_le_add_to_resolv_list), 4162 HCI_CC_STATUS(HCI_OP_LE_DEL_FROM_RESOLV_LIST, 4163 hci_cc_le_del_from_resolv_list), 4164 HCI_CC_STATUS(HCI_OP_LE_CLEAR_RESOLV_LIST, 4165 hci_cc_le_clear_resolv_list), 4166 HCI_CC(HCI_OP_LE_READ_RESOLV_LIST_SIZE, hci_cc_le_read_resolv_list_size, 4167 sizeof(struct hci_rp_le_read_resolv_list_size)), 4168 HCI_CC_STATUS(HCI_OP_LE_SET_ADDR_RESOLV_ENABLE, 4169 hci_cc_le_set_addr_resolution_enable), 4170 HCI_CC(HCI_OP_LE_READ_MAX_DATA_LEN, hci_cc_le_read_max_data_len, 4171 sizeof(struct hci_rp_le_read_max_data_len)), 4172 HCI_CC_STATUS(HCI_OP_WRITE_LE_HOST_SUPPORTED, 4173 hci_cc_write_le_host_supported), 4174 HCI_CC_STATUS(HCI_OP_LE_SET_ADV_PARAM, hci_cc_set_adv_param), 4175 HCI_CC(HCI_OP_READ_RSSI, hci_cc_read_rssi, 4176 sizeof(struct hci_rp_read_rssi)), 4177 HCI_CC(HCI_OP_READ_TX_POWER, hci_cc_read_tx_power, 4178 sizeof(struct hci_rp_read_tx_power)), 4179 HCI_CC_STATUS(HCI_OP_WRITE_SSP_DEBUG_MODE, hci_cc_write_ssp_debug_mode), 4180 HCI_CC_STATUS(HCI_OP_LE_SET_EXT_SCAN_PARAMS, 4181 hci_cc_le_set_ext_scan_param), 4182 HCI_CC_STATUS(HCI_OP_LE_SET_EXT_SCAN_ENABLE, 4183 hci_cc_le_set_ext_scan_enable), 4184 HCI_CC_STATUS(HCI_OP_LE_SET_DEFAULT_PHY, hci_cc_le_set_default_phy), 4185 HCI_CC(HCI_OP_LE_READ_NUM_SUPPORTED_ADV_SETS, 4186 hci_cc_le_read_num_adv_sets, 4187 sizeof(struct hci_rp_le_read_num_supported_adv_sets)), 4188 HCI_CC(HCI_OP_LE_SET_EXT_ADV_PARAMS, hci_cc_set_ext_adv_param, 4189 sizeof(struct hci_rp_le_set_ext_adv_params)), 4190 HCI_CC_STATUS(HCI_OP_LE_SET_EXT_ADV_ENABLE, 4191 hci_cc_le_set_ext_adv_enable), 4192 HCI_CC_STATUS(HCI_OP_LE_SET_ADV_SET_RAND_ADDR, 4193 hci_cc_le_set_adv_set_random_addr), 4194 HCI_CC_STATUS(HCI_OP_LE_REMOVE_ADV_SET, hci_cc_le_remove_adv_set), 4195 HCI_CC_STATUS(HCI_OP_LE_CLEAR_ADV_SETS, hci_cc_le_clear_adv_sets), 4196 HCI_CC_STATUS(HCI_OP_LE_SET_PER_ADV_PARAMS, hci_cc_set_per_adv_param), 4197 HCI_CC_STATUS(HCI_OP_LE_SET_PER_ADV_ENABLE, 4198 hci_cc_le_set_per_adv_enable), 4199 HCI_CC(HCI_OP_LE_READ_TRANSMIT_POWER, hci_cc_le_read_transmit_power, 4200 sizeof(struct hci_rp_le_read_transmit_power)), 4201 HCI_CC_STATUS(HCI_OP_LE_SET_PRIVACY_MODE, hci_cc_le_set_privacy_mode), 4202 HCI_CC(HCI_OP_LE_READ_BUFFER_SIZE_V2, hci_cc_le_read_buffer_size_v2, 4203 sizeof(struct hci_rp_le_read_buffer_size_v2)), 4204 HCI_CC_VL(HCI_OP_LE_SET_CIG_PARAMS, hci_cc_le_set_cig_params, 4205 sizeof(struct hci_rp_le_set_cig_params), HCI_MAX_EVENT_SIZE), 4206 HCI_CC(HCI_OP_LE_SETUP_ISO_PATH, hci_cc_le_setup_iso_path, 4207 sizeof(struct hci_rp_le_setup_iso_path)), 4208}; 4209 4210static u8 hci_cc_func(struct hci_dev *hdev, const struct hci_cc *cc, 4211 struct sk_buff *skb) 4212{ 4213 void *data; 4214 4215 if (skb->len < cc->min_len) { 4216 bt_dev_err(hdev, "unexpected cc 0x%4.4x length: %u < %u", 4217 cc->op, skb->len, cc->min_len); 4218 return HCI_ERROR_UNSPECIFIED; 4219 } 4220 4221 /* Just warn if the length is over max_len size it still be possible to 4222 * partially parse the cc so leave to callback to decide if that is 4223 * acceptable. 4224 */ 4225 if (skb->len > cc->max_len) 4226 bt_dev_warn(hdev, "unexpected cc 0x%4.4x length: %u > %u", 4227 cc->op, skb->len, cc->max_len); 4228 4229 data = hci_cc_skb_pull(hdev, skb, cc->op, cc->min_len); 4230 if (!data) 4231 return HCI_ERROR_UNSPECIFIED; 4232 4233 return cc->func(hdev, data, skb); 4234} 4235 4236static void hci_cmd_complete_evt(struct hci_dev *hdev, void *data, 4237 struct sk_buff *skb, u16 *opcode, u8 *status, 4238 hci_req_complete_t *req_complete, 4239 hci_req_complete_skb_t *req_complete_skb) 4240{ 4241 struct hci_ev_cmd_complete *ev = data; 4242 int i; 4243 4244 *opcode = __le16_to_cpu(ev->opcode); 4245 4246 bt_dev_dbg(hdev, "opcode 0x%4.4x", *opcode); 4247 4248 for (i = 0; i < ARRAY_SIZE(hci_cc_table); i++) { 4249 if (hci_cc_table[i].op == *opcode) { 4250 *status = hci_cc_func(hdev, &hci_cc_table[i], skb); 4251 break; 4252 } 4253 } 4254 4255 if (i == ARRAY_SIZE(hci_cc_table)) { 4256 /* Unknown opcode, assume byte 0 contains the status, so 4257 * that e.g. __hci_cmd_sync() properly returns errors 4258 * for vendor specific commands send by HCI drivers. 4259 * If a vendor doesn't actually follow this convention we may 4260 * need to introduce a vendor CC table in order to properly set 4261 * the status. 4262 */ 4263 *status = skb->data[0]; 4264 } 4265 4266 handle_cmd_cnt_and_timer(hdev, ev->ncmd); 4267 4268 hci_req_cmd_complete(hdev, *opcode, *status, req_complete, 4269 req_complete_skb); 4270 4271 if (hci_dev_test_flag(hdev, HCI_CMD_PENDING)) { 4272 bt_dev_err(hdev, 4273 "unexpected event for opcode 0x%4.4x", *opcode); 4274 return; 4275 } 4276 4277 if (atomic_read(&hdev->cmd_cnt) && !skb_queue_empty(&hdev->cmd_q)) 4278 queue_work(hdev->workqueue, &hdev->cmd_work); 4279} 4280 4281static void hci_cs_le_create_cis(struct hci_dev *hdev, u8 status) 4282{ 4283 struct hci_cp_le_create_cis *cp; 4284 bool pending = false; 4285 int i; 4286 4287 bt_dev_dbg(hdev, "status 0x%2.2x", status); 4288 4289 if (!status) 4290 return; 4291 4292 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_CREATE_CIS); 4293 if (!cp) 4294 return; 4295 4296 hci_dev_lock(hdev); 4297 4298 /* Remove connection if command failed */ 4299 for (i = 0; cp->num_cis; cp->num_cis--, i++) { 4300 struct hci_conn *conn; 4301 u16 handle; 4302 4303 handle = __le16_to_cpu(cp->cis[i].cis_handle); 4304 4305 conn = hci_conn_hash_lookup_handle(hdev, handle); 4306 if (conn) { 4307 if (test_and_clear_bit(HCI_CONN_CREATE_CIS, 4308 &conn->flags)) 4309 pending = true; 4310 conn->state = BT_CLOSED; 4311 hci_connect_cfm(conn, status); 4312 hci_conn_del(conn); 4313 } 4314 } 4315 4316 if (pending) 4317 hci_le_create_cis_pending(hdev); 4318 4319 hci_dev_unlock(hdev); 4320} 4321 4322#define HCI_CS(_op, _func) \ 4323{ \ 4324 .op = _op, \ 4325 .func = _func, \ 4326} 4327 4328static const struct hci_cs { 4329 u16 op; 4330 void (*func)(struct hci_dev *hdev, __u8 status); 4331} hci_cs_table[] = { 4332 HCI_CS(HCI_OP_INQUIRY, hci_cs_inquiry), 4333 HCI_CS(HCI_OP_CREATE_CONN, hci_cs_create_conn), 4334 HCI_CS(HCI_OP_DISCONNECT, hci_cs_disconnect), 4335 HCI_CS(HCI_OP_ADD_SCO, hci_cs_add_sco), 4336 HCI_CS(HCI_OP_AUTH_REQUESTED, hci_cs_auth_requested), 4337 HCI_CS(HCI_OP_SET_CONN_ENCRYPT, hci_cs_set_conn_encrypt), 4338 HCI_CS(HCI_OP_REMOTE_NAME_REQ, hci_cs_remote_name_req), 4339 HCI_CS(HCI_OP_READ_REMOTE_FEATURES, hci_cs_read_remote_features), 4340 HCI_CS(HCI_OP_READ_REMOTE_EXT_FEATURES, 4341 hci_cs_read_remote_ext_features), 4342 HCI_CS(HCI_OP_SETUP_SYNC_CONN, hci_cs_setup_sync_conn), 4343 HCI_CS(HCI_OP_ENHANCED_SETUP_SYNC_CONN, 4344 hci_cs_enhanced_setup_sync_conn), 4345 HCI_CS(HCI_OP_SNIFF_MODE, hci_cs_sniff_mode), 4346 HCI_CS(HCI_OP_EXIT_SNIFF_MODE, hci_cs_exit_sniff_mode), 4347 HCI_CS(HCI_OP_SWITCH_ROLE, hci_cs_switch_role), 4348 HCI_CS(HCI_OP_LE_CREATE_CONN, hci_cs_le_create_conn), 4349 HCI_CS(HCI_OP_LE_READ_REMOTE_FEATURES, hci_cs_le_read_remote_features), 4350 HCI_CS(HCI_OP_LE_START_ENC, hci_cs_le_start_enc), 4351 HCI_CS(HCI_OP_LE_EXT_CREATE_CONN, hci_cs_le_ext_create_conn), 4352 HCI_CS(HCI_OP_LE_CREATE_CIS, hci_cs_le_create_cis), 4353 HCI_CS(HCI_OP_LE_CREATE_BIG, hci_cs_le_create_big), 4354}; 4355 4356static void hci_cmd_status_evt(struct hci_dev *hdev, void *data, 4357 struct sk_buff *skb, u16 *opcode, u8 *status, 4358 hci_req_complete_t *req_complete, 4359 hci_req_complete_skb_t *req_complete_skb) 4360{ 4361 struct hci_ev_cmd_status *ev = data; 4362 int i; 4363 4364 *opcode = __le16_to_cpu(ev->opcode); 4365 *status = ev->status; 4366 4367 bt_dev_dbg(hdev, "opcode 0x%4.4x", *opcode); 4368 4369 for (i = 0; i < ARRAY_SIZE(hci_cs_table); i++) { 4370 if (hci_cs_table[i].op == *opcode) { 4371 hci_cs_table[i].func(hdev, ev->status); 4372 break; 4373 } 4374 } 4375 4376 handle_cmd_cnt_and_timer(hdev, ev->ncmd); 4377 4378 /* Indicate request completion if the command failed. Also, if 4379 * we're not waiting for a special event and we get a success 4380 * command status we should try to flag the request as completed 4381 * (since for this kind of commands there will not be a command 4382 * complete event). 4383 */ 4384 if (ev->status || (hdev->req_skb && !hci_skb_event(hdev->req_skb))) { 4385 hci_req_cmd_complete(hdev, *opcode, ev->status, req_complete, 4386 req_complete_skb); 4387 if (hci_dev_test_flag(hdev, HCI_CMD_PENDING)) { 4388 bt_dev_err(hdev, "unexpected event for opcode 0x%4.4x", 4389 *opcode); 4390 return; 4391 } 4392 } 4393 4394 if (atomic_read(&hdev->cmd_cnt) && !skb_queue_empty(&hdev->cmd_q)) 4395 queue_work(hdev->workqueue, &hdev->cmd_work); 4396} 4397 4398static void hci_hardware_error_evt(struct hci_dev *hdev, void *data, 4399 struct sk_buff *skb) 4400{ 4401 struct hci_ev_hardware_error *ev = data; 4402 4403 bt_dev_dbg(hdev, "code 0x%2.2x", ev->code); 4404 4405 hdev->hw_error_code = ev->code; 4406 4407 queue_work(hdev->req_workqueue, &hdev->error_reset); 4408} 4409 4410static void hci_role_change_evt(struct hci_dev *hdev, void *data, 4411 struct sk_buff *skb) 4412{ 4413 struct hci_ev_role_change *ev = data; 4414 struct hci_conn *conn; 4415 4416 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 4417 4418 hci_dev_lock(hdev); 4419 4420 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr); 4421 if (conn) { 4422 if (!ev->status) 4423 conn->role = ev->role; 4424 4425 clear_bit(HCI_CONN_RSWITCH_PEND, &conn->flags); 4426 4427 hci_role_switch_cfm(conn, ev->status, ev->role); 4428 } 4429 4430 hci_dev_unlock(hdev); 4431} 4432 4433static void hci_num_comp_pkts_evt(struct hci_dev *hdev, void *data, 4434 struct sk_buff *skb) 4435{ 4436 struct hci_ev_num_comp_pkts *ev = data; 4437 int i; 4438 4439 if (!hci_ev_skb_pull(hdev, skb, HCI_EV_NUM_COMP_PKTS, 4440 flex_array_size(ev, handles, ev->num))) 4441 return; 4442 4443 if (hdev->flow_ctl_mode != HCI_FLOW_CTL_MODE_PACKET_BASED) { 4444 bt_dev_err(hdev, "wrong event for mode %d", hdev->flow_ctl_mode); 4445 return; 4446 } 4447 4448 bt_dev_dbg(hdev, "num %d", ev->num); 4449 4450 for (i = 0; i < ev->num; i++) { 4451 struct hci_comp_pkts_info *info = &ev->handles[i]; 4452 struct hci_conn *conn; 4453 __u16 handle, count; 4454 4455 handle = __le16_to_cpu(info->handle); 4456 count = __le16_to_cpu(info->count); 4457 4458 conn = hci_conn_hash_lookup_handle(hdev, handle); 4459 if (!conn) 4460 continue; 4461 4462 conn->sent -= count; 4463 4464 switch (conn->type) { 4465 case ACL_LINK: 4466 hdev->acl_cnt += count; 4467 if (hdev->acl_cnt > hdev->acl_pkts) 4468 hdev->acl_cnt = hdev->acl_pkts; 4469 break; 4470 4471 case LE_LINK: 4472 if (hdev->le_pkts) { 4473 hdev->le_cnt += count; 4474 if (hdev->le_cnt > hdev->le_pkts) 4475 hdev->le_cnt = hdev->le_pkts; 4476 } else { 4477 hdev->acl_cnt += count; 4478 if (hdev->acl_cnt > hdev->acl_pkts) 4479 hdev->acl_cnt = hdev->acl_pkts; 4480 } 4481 break; 4482 4483 case SCO_LINK: 4484 hdev->sco_cnt += count; 4485 if (hdev->sco_cnt > hdev->sco_pkts) 4486 hdev->sco_cnt = hdev->sco_pkts; 4487 break; 4488 4489 case ISO_LINK: 4490 if (hdev->iso_pkts) { 4491 hdev->iso_cnt += count; 4492 if (hdev->iso_cnt > hdev->iso_pkts) 4493 hdev->iso_cnt = hdev->iso_pkts; 4494 } else if (hdev->le_pkts) { 4495 hdev->le_cnt += count; 4496 if (hdev->le_cnt > hdev->le_pkts) 4497 hdev->le_cnt = hdev->le_pkts; 4498 } else { 4499 hdev->acl_cnt += count; 4500 if (hdev->acl_cnt > hdev->acl_pkts) 4501 hdev->acl_cnt = hdev->acl_pkts; 4502 } 4503 break; 4504 4505 default: 4506 bt_dev_err(hdev, "unknown type %d conn %p", 4507 conn->type, conn); 4508 break; 4509 } 4510 } 4511 4512 queue_work(hdev->workqueue, &hdev->tx_work); 4513} 4514 4515static struct hci_conn *__hci_conn_lookup_handle(struct hci_dev *hdev, 4516 __u16 handle) 4517{ 4518 struct hci_chan *chan; 4519 4520 switch (hdev->dev_type) { 4521 case HCI_PRIMARY: 4522 return hci_conn_hash_lookup_handle(hdev, handle); 4523 case HCI_AMP: 4524 chan = hci_chan_lookup_handle(hdev, handle); 4525 if (chan) 4526 return chan->conn; 4527 break; 4528 default: 4529 bt_dev_err(hdev, "unknown dev_type %d", hdev->dev_type); 4530 break; 4531 } 4532 4533 return NULL; 4534} 4535 4536static void hci_num_comp_blocks_evt(struct hci_dev *hdev, void *data, 4537 struct sk_buff *skb) 4538{ 4539 struct hci_ev_num_comp_blocks *ev = data; 4540 int i; 4541 4542 if (!hci_ev_skb_pull(hdev, skb, HCI_EV_NUM_COMP_BLOCKS, 4543 flex_array_size(ev, handles, ev->num_hndl))) 4544 return; 4545 4546 if (hdev->flow_ctl_mode != HCI_FLOW_CTL_MODE_BLOCK_BASED) { 4547 bt_dev_err(hdev, "wrong event for mode %d", 4548 hdev->flow_ctl_mode); 4549 return; 4550 } 4551 4552 bt_dev_dbg(hdev, "num_blocks %d num_hndl %d", ev->num_blocks, 4553 ev->num_hndl); 4554 4555 for (i = 0; i < ev->num_hndl; i++) { 4556 struct hci_comp_blocks_info *info = &ev->handles[i]; 4557 struct hci_conn *conn = NULL; 4558 __u16 handle, block_count; 4559 4560 handle = __le16_to_cpu(info->handle); 4561 block_count = __le16_to_cpu(info->blocks); 4562 4563 conn = __hci_conn_lookup_handle(hdev, handle); 4564 if (!conn) 4565 continue; 4566 4567 conn->sent -= block_count; 4568 4569 switch (conn->type) { 4570 case ACL_LINK: 4571 case AMP_LINK: 4572 hdev->block_cnt += block_count; 4573 if (hdev->block_cnt > hdev->num_blocks) 4574 hdev->block_cnt = hdev->num_blocks; 4575 break; 4576 4577 default: 4578 bt_dev_err(hdev, "unknown type %d conn %p", 4579 conn->type, conn); 4580 break; 4581 } 4582 } 4583 4584 queue_work(hdev->workqueue, &hdev->tx_work); 4585} 4586 4587static void hci_mode_change_evt(struct hci_dev *hdev, void *data, 4588 struct sk_buff *skb) 4589{ 4590 struct hci_ev_mode_change *ev = data; 4591 struct hci_conn *conn; 4592 4593 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 4594 4595 hci_dev_lock(hdev); 4596 4597 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle)); 4598 if (conn) { 4599 conn->mode = ev->mode; 4600 4601 if (!test_and_clear_bit(HCI_CONN_MODE_CHANGE_PEND, 4602 &conn->flags)) { 4603 if (conn->mode == HCI_CM_ACTIVE) 4604 set_bit(HCI_CONN_POWER_SAVE, &conn->flags); 4605 else 4606 clear_bit(HCI_CONN_POWER_SAVE, &conn->flags); 4607 } 4608 4609 if (test_and_clear_bit(HCI_CONN_SCO_SETUP_PEND, &conn->flags)) 4610 hci_sco_setup(conn, ev->status); 4611 } 4612 4613 hci_dev_unlock(hdev); 4614} 4615 4616static void hci_pin_code_request_evt(struct hci_dev *hdev, void *data, 4617 struct sk_buff *skb) 4618{ 4619 struct hci_ev_pin_code_req *ev = data; 4620 struct hci_conn *conn; 4621 4622 bt_dev_dbg(hdev, ""); 4623 4624 hci_dev_lock(hdev); 4625 4626 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr); 4627 if (!conn) 4628 goto unlock; 4629 4630 if (conn->state == BT_CONNECTED) { 4631 hci_conn_hold(conn); 4632 conn->disc_timeout = HCI_PAIRING_TIMEOUT; 4633 hci_conn_drop(conn); 4634 } 4635 4636 if (!hci_dev_test_flag(hdev, HCI_BONDABLE) && 4637 !test_bit(HCI_CONN_AUTH_INITIATOR, &conn->flags)) { 4638 hci_send_cmd(hdev, HCI_OP_PIN_CODE_NEG_REPLY, 4639 sizeof(ev->bdaddr), &ev->bdaddr); 4640 } else if (hci_dev_test_flag(hdev, HCI_MGMT)) { 4641 u8 secure; 4642 4643 if (conn->pending_sec_level == BT_SECURITY_HIGH) 4644 secure = 1; 4645 else 4646 secure = 0; 4647 4648 mgmt_pin_code_request(hdev, &ev->bdaddr, secure); 4649 } 4650 4651unlock: 4652 hci_dev_unlock(hdev); 4653} 4654 4655static void conn_set_key(struct hci_conn *conn, u8 key_type, u8 pin_len) 4656{ 4657 if (key_type == HCI_LK_CHANGED_COMBINATION) 4658 return; 4659 4660 conn->pin_length = pin_len; 4661 conn->key_type = key_type; 4662 4663 switch (key_type) { 4664 case HCI_LK_LOCAL_UNIT: 4665 case HCI_LK_REMOTE_UNIT: 4666 case HCI_LK_DEBUG_COMBINATION: 4667 return; 4668 case HCI_LK_COMBINATION: 4669 if (pin_len == 16) 4670 conn->pending_sec_level = BT_SECURITY_HIGH; 4671 else 4672 conn->pending_sec_level = BT_SECURITY_MEDIUM; 4673 break; 4674 case HCI_LK_UNAUTH_COMBINATION_P192: 4675 case HCI_LK_UNAUTH_COMBINATION_P256: 4676 conn->pending_sec_level = BT_SECURITY_MEDIUM; 4677 break; 4678 case HCI_LK_AUTH_COMBINATION_P192: 4679 conn->pending_sec_level = BT_SECURITY_HIGH; 4680 break; 4681 case HCI_LK_AUTH_COMBINATION_P256: 4682 conn->pending_sec_level = BT_SECURITY_FIPS; 4683 break; 4684 } 4685} 4686 4687static void hci_link_key_request_evt(struct hci_dev *hdev, void *data, 4688 struct sk_buff *skb) 4689{ 4690 struct hci_ev_link_key_req *ev = data; 4691 struct hci_cp_link_key_reply cp; 4692 struct hci_conn *conn; 4693 struct link_key *key; 4694 4695 bt_dev_dbg(hdev, ""); 4696 4697 if (!hci_dev_test_flag(hdev, HCI_MGMT)) 4698 return; 4699 4700 hci_dev_lock(hdev); 4701 4702 key = hci_find_link_key(hdev, &ev->bdaddr); 4703 if (!key) { 4704 bt_dev_dbg(hdev, "link key not found for %pMR", &ev->bdaddr); 4705 goto not_found; 4706 } 4707 4708 bt_dev_dbg(hdev, "found key type %u for %pMR", key->type, &ev->bdaddr); 4709 4710 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr); 4711 if (conn) { 4712 clear_bit(HCI_CONN_NEW_LINK_KEY, &conn->flags); 4713 4714 if ((key->type == HCI_LK_UNAUTH_COMBINATION_P192 || 4715 key->type == HCI_LK_UNAUTH_COMBINATION_P256) && 4716 conn->auth_type != 0xff && (conn->auth_type & 0x01)) { 4717 bt_dev_dbg(hdev, "ignoring unauthenticated key"); 4718 goto not_found; 4719 } 4720 4721 if (key->type == HCI_LK_COMBINATION && key->pin_len < 16 && 4722 (conn->pending_sec_level == BT_SECURITY_HIGH || 4723 conn->pending_sec_level == BT_SECURITY_FIPS)) { 4724 bt_dev_dbg(hdev, "ignoring key unauthenticated for high security"); 4725 goto not_found; 4726 } 4727 4728 conn_set_key(conn, key->type, key->pin_len); 4729 } 4730 4731 bacpy(&cp.bdaddr, &ev->bdaddr); 4732 memcpy(cp.link_key, key->val, HCI_LINK_KEY_SIZE); 4733 4734 hci_send_cmd(hdev, HCI_OP_LINK_KEY_REPLY, sizeof(cp), &cp); 4735 4736 hci_dev_unlock(hdev); 4737 4738 return; 4739 4740not_found: 4741 hci_send_cmd(hdev, HCI_OP_LINK_KEY_NEG_REPLY, 6, &ev->bdaddr); 4742 hci_dev_unlock(hdev); 4743} 4744 4745static void hci_link_key_notify_evt(struct hci_dev *hdev, void *data, 4746 struct sk_buff *skb) 4747{ 4748 struct hci_ev_link_key_notify *ev = data; 4749 struct hci_conn *conn; 4750 struct link_key *key; 4751 bool persistent; 4752 u8 pin_len = 0; 4753 4754 bt_dev_dbg(hdev, ""); 4755 4756 hci_dev_lock(hdev); 4757 4758 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr); 4759 if (!conn) 4760 goto unlock; 4761 4762 /* Ignore NULL link key against CVE-2020-26555 */ 4763 if (!crypto_memneq(ev->link_key, ZERO_KEY, HCI_LINK_KEY_SIZE)) { 4764 bt_dev_dbg(hdev, "Ignore NULL link key (ZERO KEY) for %pMR", 4765 &ev->bdaddr); 4766 hci_disconnect(conn, HCI_ERROR_AUTH_FAILURE); 4767 hci_conn_drop(conn); 4768 goto unlock; 4769 } 4770 4771 hci_conn_hold(conn); 4772 conn->disc_timeout = HCI_DISCONN_TIMEOUT; 4773 hci_conn_drop(conn); 4774 4775 set_bit(HCI_CONN_NEW_LINK_KEY, &conn->flags); 4776 conn_set_key(conn, ev->key_type, conn->pin_length); 4777 4778 if (!hci_dev_test_flag(hdev, HCI_MGMT)) 4779 goto unlock; 4780 4781 key = hci_add_link_key(hdev, conn, &ev->bdaddr, ev->link_key, 4782 ev->key_type, pin_len, &persistent); 4783 if (!key) 4784 goto unlock; 4785 4786 /* Update connection information since adding the key will have 4787 * fixed up the type in the case of changed combination keys. 4788 */ 4789 if (ev->key_type == HCI_LK_CHANGED_COMBINATION) 4790 conn_set_key(conn, key->type, key->pin_len); 4791 4792 mgmt_new_link_key(hdev, key, persistent); 4793 4794 /* Keep debug keys around only if the HCI_KEEP_DEBUG_KEYS flag 4795 * is set. If it's not set simply remove the key from the kernel 4796 * list (we've still notified user space about it but with 4797 * store_hint being 0). 4798 */ 4799 if (key->type == HCI_LK_DEBUG_COMBINATION && 4800 !hci_dev_test_flag(hdev, HCI_KEEP_DEBUG_KEYS)) { 4801 list_del_rcu(&key->list); 4802 kfree_rcu(key, rcu); 4803 goto unlock; 4804 } 4805 4806 if (persistent) 4807 clear_bit(HCI_CONN_FLUSH_KEY, &conn->flags); 4808 else 4809 set_bit(HCI_CONN_FLUSH_KEY, &conn->flags); 4810 4811unlock: 4812 hci_dev_unlock(hdev); 4813} 4814 4815static void hci_clock_offset_evt(struct hci_dev *hdev, void *data, 4816 struct sk_buff *skb) 4817{ 4818 struct hci_ev_clock_offset *ev = data; 4819 struct hci_conn *conn; 4820 4821 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 4822 4823 hci_dev_lock(hdev); 4824 4825 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle)); 4826 if (conn && !ev->status) { 4827 struct inquiry_entry *ie; 4828 4829 ie = hci_inquiry_cache_lookup(hdev, &conn->dst); 4830 if (ie) { 4831 ie->data.clock_offset = ev->clock_offset; 4832 ie->timestamp = jiffies; 4833 } 4834 } 4835 4836 hci_dev_unlock(hdev); 4837} 4838 4839static void hci_pkt_type_change_evt(struct hci_dev *hdev, void *data, 4840 struct sk_buff *skb) 4841{ 4842 struct hci_ev_pkt_type_change *ev = data; 4843 struct hci_conn *conn; 4844 4845 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 4846 4847 hci_dev_lock(hdev); 4848 4849 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle)); 4850 if (conn && !ev->status) 4851 conn->pkt_type = __le16_to_cpu(ev->pkt_type); 4852 4853 hci_dev_unlock(hdev); 4854} 4855 4856static void hci_pscan_rep_mode_evt(struct hci_dev *hdev, void *data, 4857 struct sk_buff *skb) 4858{ 4859 struct hci_ev_pscan_rep_mode *ev = data; 4860 struct inquiry_entry *ie; 4861 4862 bt_dev_dbg(hdev, ""); 4863 4864 hci_dev_lock(hdev); 4865 4866 ie = hci_inquiry_cache_lookup(hdev, &ev->bdaddr); 4867 if (ie) { 4868 ie->data.pscan_rep_mode = ev->pscan_rep_mode; 4869 ie->timestamp = jiffies; 4870 } 4871 4872 hci_dev_unlock(hdev); 4873} 4874 4875static void hci_inquiry_result_with_rssi_evt(struct hci_dev *hdev, void *edata, 4876 struct sk_buff *skb) 4877{ 4878 struct hci_ev_inquiry_result_rssi *ev = edata; 4879 struct inquiry_data data; 4880 int i; 4881 4882 bt_dev_dbg(hdev, "num_rsp %d", ev->num); 4883 4884 if (!ev->num) 4885 return; 4886 4887 if (hci_dev_test_flag(hdev, HCI_PERIODIC_INQ)) 4888 return; 4889 4890 hci_dev_lock(hdev); 4891 4892 if (skb->len == array_size(ev->num, 4893 sizeof(struct inquiry_info_rssi_pscan))) { 4894 struct inquiry_info_rssi_pscan *info; 4895 4896 for (i = 0; i < ev->num; i++) { 4897 u32 flags; 4898 4899 info = hci_ev_skb_pull(hdev, skb, 4900 HCI_EV_INQUIRY_RESULT_WITH_RSSI, 4901 sizeof(*info)); 4902 if (!info) { 4903 bt_dev_err(hdev, "Malformed HCI Event: 0x%2.2x", 4904 HCI_EV_INQUIRY_RESULT_WITH_RSSI); 4905 goto unlock; 4906 } 4907 4908 bacpy(&data.bdaddr, &info->bdaddr); 4909 data.pscan_rep_mode = info->pscan_rep_mode; 4910 data.pscan_period_mode = info->pscan_period_mode; 4911 data.pscan_mode = info->pscan_mode; 4912 memcpy(data.dev_class, info->dev_class, 3); 4913 data.clock_offset = info->clock_offset; 4914 data.rssi = info->rssi; 4915 data.ssp_mode = 0x00; 4916 4917 flags = hci_inquiry_cache_update(hdev, &data, false); 4918 4919 mgmt_device_found(hdev, &info->bdaddr, ACL_LINK, 0x00, 4920 info->dev_class, info->rssi, 4921 flags, NULL, 0, NULL, 0, 0); 4922 } 4923 } else if (skb->len == array_size(ev->num, 4924 sizeof(struct inquiry_info_rssi))) { 4925 struct inquiry_info_rssi *info; 4926 4927 for (i = 0; i < ev->num; i++) { 4928 u32 flags; 4929 4930 info = hci_ev_skb_pull(hdev, skb, 4931 HCI_EV_INQUIRY_RESULT_WITH_RSSI, 4932 sizeof(*info)); 4933 if (!info) { 4934 bt_dev_err(hdev, "Malformed HCI Event: 0x%2.2x", 4935 HCI_EV_INQUIRY_RESULT_WITH_RSSI); 4936 goto unlock; 4937 } 4938 4939 bacpy(&data.bdaddr, &info->bdaddr); 4940 data.pscan_rep_mode = info->pscan_rep_mode; 4941 data.pscan_period_mode = info->pscan_period_mode; 4942 data.pscan_mode = 0x00; 4943 memcpy(data.dev_class, info->dev_class, 3); 4944 data.clock_offset = info->clock_offset; 4945 data.rssi = info->rssi; 4946 data.ssp_mode = 0x00; 4947 4948 flags = hci_inquiry_cache_update(hdev, &data, false); 4949 4950 mgmt_device_found(hdev, &info->bdaddr, ACL_LINK, 0x00, 4951 info->dev_class, info->rssi, 4952 flags, NULL, 0, NULL, 0, 0); 4953 } 4954 } else { 4955 bt_dev_err(hdev, "Malformed HCI Event: 0x%2.2x", 4956 HCI_EV_INQUIRY_RESULT_WITH_RSSI); 4957 } 4958unlock: 4959 hci_dev_unlock(hdev); 4960} 4961 4962static void hci_remote_ext_features_evt(struct hci_dev *hdev, void *data, 4963 struct sk_buff *skb) 4964{ 4965 struct hci_ev_remote_ext_features *ev = data; 4966 struct hci_conn *conn; 4967 4968 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 4969 4970 hci_dev_lock(hdev); 4971 4972 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle)); 4973 if (!conn) 4974 goto unlock; 4975 4976 if (ev->page < HCI_MAX_PAGES) 4977 memcpy(conn->features[ev->page], ev->features, 8); 4978 4979 if (!ev->status && ev->page == 0x01) { 4980 struct inquiry_entry *ie; 4981 4982 ie = hci_inquiry_cache_lookup(hdev, &conn->dst); 4983 if (ie) 4984 ie->data.ssp_mode = (ev->features[0] & LMP_HOST_SSP); 4985 4986 if (ev->features[0] & LMP_HOST_SSP) { 4987 set_bit(HCI_CONN_SSP_ENABLED, &conn->flags); 4988 } else { 4989 /* It is mandatory by the Bluetooth specification that 4990 * Extended Inquiry Results are only used when Secure 4991 * Simple Pairing is enabled, but some devices violate 4992 * this. 4993 * 4994 * To make these devices work, the internal SSP 4995 * enabled flag needs to be cleared if the remote host 4996 * features do not indicate SSP support */ 4997 clear_bit(HCI_CONN_SSP_ENABLED, &conn->flags); 4998 } 4999 5000 if (ev->features[0] & LMP_HOST_SC) 5001 set_bit(HCI_CONN_SC_ENABLED, &conn->flags); 5002 } 5003 5004 if (conn->state != BT_CONFIG) 5005 goto unlock; 5006 5007 if (!ev->status && !test_bit(HCI_CONN_MGMT_CONNECTED, &conn->flags)) { 5008 struct hci_cp_remote_name_req cp; 5009 memset(&cp, 0, sizeof(cp)); 5010 bacpy(&cp.bdaddr, &conn->dst); 5011 cp.pscan_rep_mode = 0x02; 5012 hci_send_cmd(hdev, HCI_OP_REMOTE_NAME_REQ, sizeof(cp), &cp); 5013 } else { 5014 mgmt_device_connected(hdev, conn, NULL, 0); 5015 } 5016 5017 if (!hci_outgoing_auth_needed(hdev, conn)) { 5018 conn->state = BT_CONNECTED; 5019 hci_connect_cfm(conn, ev->status); 5020 hci_conn_drop(conn); 5021 } 5022 5023unlock: 5024 hci_dev_unlock(hdev); 5025} 5026 5027static void hci_sync_conn_complete_evt(struct hci_dev *hdev, void *data, 5028 struct sk_buff *skb) 5029{ 5030 struct hci_ev_sync_conn_complete *ev = data; 5031 struct hci_conn *conn; 5032 u8 status = ev->status; 5033 5034 switch (ev->link_type) { 5035 case SCO_LINK: 5036 case ESCO_LINK: 5037 break; 5038 default: 5039 /* As per Core 5.3 Vol 4 Part E 7.7.35 (p.2219), Link_Type 5040 * for HCI_Synchronous_Connection_Complete is limited to 5041 * either SCO or eSCO 5042 */ 5043 bt_dev_err(hdev, "Ignoring connect complete event for invalid link type"); 5044 return; 5045 } 5046 5047 bt_dev_dbg(hdev, "status 0x%2.2x", status); 5048 5049 hci_dev_lock(hdev); 5050 5051 conn = hci_conn_hash_lookup_ba(hdev, ev->link_type, &ev->bdaddr); 5052 if (!conn) { 5053 if (ev->link_type == ESCO_LINK) 5054 goto unlock; 5055 5056 /* When the link type in the event indicates SCO connection 5057 * and lookup of the connection object fails, then check 5058 * if an eSCO connection object exists. 5059 * 5060 * The core limits the synchronous connections to either 5061 * SCO or eSCO. The eSCO connection is preferred and tried 5062 * to be setup first and until successfully established, 5063 * the link type will be hinted as eSCO. 5064 */ 5065 conn = hci_conn_hash_lookup_ba(hdev, ESCO_LINK, &ev->bdaddr); 5066 if (!conn) 5067 goto unlock; 5068 } 5069 5070 /* The HCI_Synchronous_Connection_Complete event is only sent once per connection. 5071 * Processing it more than once per connection can corrupt kernel memory. 5072 * 5073 * As the connection handle is set here for the first time, it indicates 5074 * whether the connection is already set up. 5075 */ 5076 if (!HCI_CONN_HANDLE_UNSET(conn->handle)) { 5077 bt_dev_err(hdev, "Ignoring HCI_Sync_Conn_Complete event for existing connection"); 5078 goto unlock; 5079 } 5080 5081 switch (status) { 5082 case 0x00: 5083 status = hci_conn_set_handle(conn, __le16_to_cpu(ev->handle)); 5084 if (status) { 5085 conn->state = BT_CLOSED; 5086 break; 5087 } 5088 5089 conn->state = BT_CONNECTED; 5090 conn->type = ev->link_type; 5091 5092 hci_debugfs_create_conn(conn); 5093 hci_conn_add_sysfs(conn); 5094 break; 5095 5096 case 0x10: /* Connection Accept Timeout */ 5097 case 0x0d: /* Connection Rejected due to Limited Resources */ 5098 case 0x11: /* Unsupported Feature or Parameter Value */ 5099 case 0x1c: /* SCO interval rejected */ 5100 case 0x1a: /* Unsupported Remote Feature */ 5101 case 0x1e: /* Invalid LMP Parameters */ 5102 case 0x1f: /* Unspecified error */ 5103 case 0x20: /* Unsupported LMP Parameter value */ 5104 if (conn->out) { 5105 conn->pkt_type = (hdev->esco_type & SCO_ESCO_MASK) | 5106 (hdev->esco_type & EDR_ESCO_MASK); 5107 if (hci_setup_sync(conn, conn->parent->handle)) 5108 goto unlock; 5109 } 5110 fallthrough; 5111 5112 default: 5113 conn->state = BT_CLOSED; 5114 break; 5115 } 5116 5117 bt_dev_dbg(hdev, "SCO connected with air mode: %02x", ev->air_mode); 5118 /* Notify only in case of SCO over HCI transport data path which 5119 * is zero and non-zero value shall be non-HCI transport data path 5120 */ 5121 if (conn->codec.data_path == 0 && hdev->notify) { 5122 switch (ev->air_mode) { 5123 case 0x02: 5124 hdev->notify(hdev, HCI_NOTIFY_ENABLE_SCO_CVSD); 5125 break; 5126 case 0x03: 5127 hdev->notify(hdev, HCI_NOTIFY_ENABLE_SCO_TRANSP); 5128 break; 5129 } 5130 } 5131 5132 hci_connect_cfm(conn, status); 5133 if (status) 5134 hci_conn_del(conn); 5135 5136unlock: 5137 hci_dev_unlock(hdev); 5138} 5139 5140static inline size_t eir_get_length(u8 *eir, size_t eir_len) 5141{ 5142 size_t parsed = 0; 5143 5144 while (parsed < eir_len) { 5145 u8 field_len = eir[0]; 5146 5147 if (field_len == 0) 5148 return parsed; 5149 5150 parsed += field_len + 1; 5151 eir += field_len + 1; 5152 } 5153 5154 return eir_len; 5155} 5156 5157static void hci_extended_inquiry_result_evt(struct hci_dev *hdev, void *edata, 5158 struct sk_buff *skb) 5159{ 5160 struct hci_ev_ext_inquiry_result *ev = edata; 5161 struct inquiry_data data; 5162 size_t eir_len; 5163 int i; 5164 5165 if (!hci_ev_skb_pull(hdev, skb, HCI_EV_EXTENDED_INQUIRY_RESULT, 5166 flex_array_size(ev, info, ev->num))) 5167 return; 5168 5169 bt_dev_dbg(hdev, "num %d", ev->num); 5170 5171 if (!ev->num) 5172 return; 5173 5174 if (hci_dev_test_flag(hdev, HCI_PERIODIC_INQ)) 5175 return; 5176 5177 hci_dev_lock(hdev); 5178 5179 for (i = 0; i < ev->num; i++) { 5180 struct extended_inquiry_info *info = &ev->info[i]; 5181 u32 flags; 5182 bool name_known; 5183 5184 bacpy(&data.bdaddr, &info->bdaddr); 5185 data.pscan_rep_mode = info->pscan_rep_mode; 5186 data.pscan_period_mode = info->pscan_period_mode; 5187 data.pscan_mode = 0x00; 5188 memcpy(data.dev_class, info->dev_class, 3); 5189 data.clock_offset = info->clock_offset; 5190 data.rssi = info->rssi; 5191 data.ssp_mode = 0x01; 5192 5193 if (hci_dev_test_flag(hdev, HCI_MGMT)) 5194 name_known = eir_get_data(info->data, 5195 sizeof(info->data), 5196 EIR_NAME_COMPLETE, NULL); 5197 else 5198 name_known = true; 5199 5200 flags = hci_inquiry_cache_update(hdev, &data, name_known); 5201 5202 eir_len = eir_get_length(info->data, sizeof(info->data)); 5203 5204 mgmt_device_found(hdev, &info->bdaddr, ACL_LINK, 0x00, 5205 info->dev_class, info->rssi, 5206 flags, info->data, eir_len, NULL, 0, 0); 5207 } 5208 5209 hci_dev_unlock(hdev); 5210} 5211 5212static void hci_key_refresh_complete_evt(struct hci_dev *hdev, void *data, 5213 struct sk_buff *skb) 5214{ 5215 struct hci_ev_key_refresh_complete *ev = data; 5216 struct hci_conn *conn; 5217 5218 bt_dev_dbg(hdev, "status 0x%2.2x handle 0x%4.4x", ev->status, 5219 __le16_to_cpu(ev->handle)); 5220 5221 hci_dev_lock(hdev); 5222 5223 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle)); 5224 if (!conn) 5225 goto unlock; 5226 5227 /* For BR/EDR the necessary steps are taken through the 5228 * auth_complete event. 5229 */ 5230 if (conn->type != LE_LINK) 5231 goto unlock; 5232 5233 if (!ev->status) 5234 conn->sec_level = conn->pending_sec_level; 5235 5236 clear_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags); 5237 5238 if (ev->status && conn->state == BT_CONNECTED) { 5239 hci_disconnect(conn, HCI_ERROR_AUTH_FAILURE); 5240 hci_conn_drop(conn); 5241 goto unlock; 5242 } 5243 5244 if (conn->state == BT_CONFIG) { 5245 if (!ev->status) 5246 conn->state = BT_CONNECTED; 5247 5248 hci_connect_cfm(conn, ev->status); 5249 hci_conn_drop(conn); 5250 } else { 5251 hci_auth_cfm(conn, ev->status); 5252 5253 hci_conn_hold(conn); 5254 conn->disc_timeout = HCI_DISCONN_TIMEOUT; 5255 hci_conn_drop(conn); 5256 } 5257 5258unlock: 5259 hci_dev_unlock(hdev); 5260} 5261 5262static u8 hci_get_auth_req(struct hci_conn *conn) 5263{ 5264 /* If remote requests no-bonding follow that lead */ 5265 if (conn->remote_auth == HCI_AT_NO_BONDING || 5266 conn->remote_auth == HCI_AT_NO_BONDING_MITM) 5267 return conn->remote_auth | (conn->auth_type & 0x01); 5268 5269 /* If both remote and local have enough IO capabilities, require 5270 * MITM protection 5271 */ 5272 if (conn->remote_cap != HCI_IO_NO_INPUT_OUTPUT && 5273 conn->io_capability != HCI_IO_NO_INPUT_OUTPUT) 5274 return conn->remote_auth | 0x01; 5275 5276 /* No MITM protection possible so ignore remote requirement */ 5277 return (conn->remote_auth & ~0x01) | (conn->auth_type & 0x01); 5278} 5279 5280static u8 bredr_oob_data_present(struct hci_conn *conn) 5281{ 5282 struct hci_dev *hdev = conn->hdev; 5283 struct oob_data *data; 5284 5285 data = hci_find_remote_oob_data(hdev, &conn->dst, BDADDR_BREDR); 5286 if (!data) 5287 return 0x00; 5288 5289 if (bredr_sc_enabled(hdev)) { 5290 /* When Secure Connections is enabled, then just 5291 * return the present value stored with the OOB 5292 * data. The stored value contains the right present 5293 * information. However it can only be trusted when 5294 * not in Secure Connection Only mode. 5295 */ 5296 if (!hci_dev_test_flag(hdev, HCI_SC_ONLY)) 5297 return data->present; 5298 5299 /* When Secure Connections Only mode is enabled, then 5300 * the P-256 values are required. If they are not 5301 * available, then do not declare that OOB data is 5302 * present. 5303 */ 5304 if (!crypto_memneq(data->rand256, ZERO_KEY, 16) || 5305 !crypto_memneq(data->hash256, ZERO_KEY, 16)) 5306 return 0x00; 5307 5308 return 0x02; 5309 } 5310 5311 /* When Secure Connections is not enabled or actually 5312 * not supported by the hardware, then check that if 5313 * P-192 data values are present. 5314 */ 5315 if (!crypto_memneq(data->rand192, ZERO_KEY, 16) || 5316 !crypto_memneq(data->hash192, ZERO_KEY, 16)) 5317 return 0x00; 5318 5319 return 0x01; 5320} 5321 5322static void hci_io_capa_request_evt(struct hci_dev *hdev, void *data, 5323 struct sk_buff *skb) 5324{ 5325 struct hci_ev_io_capa_request *ev = data; 5326 struct hci_conn *conn; 5327 5328 bt_dev_dbg(hdev, ""); 5329 5330 hci_dev_lock(hdev); 5331 5332 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr); 5333 if (!conn || !hci_dev_test_flag(hdev, HCI_SSP_ENABLED)) 5334 goto unlock; 5335 5336 /* Assume remote supports SSP since it has triggered this event */ 5337 set_bit(HCI_CONN_SSP_ENABLED, &conn->flags); 5338 5339 hci_conn_hold(conn); 5340 5341 if (!hci_dev_test_flag(hdev, HCI_MGMT)) 5342 goto unlock; 5343 5344 /* Allow pairing if we're pairable, the initiators of the 5345 * pairing or if the remote is not requesting bonding. 5346 */ 5347 if (hci_dev_test_flag(hdev, HCI_BONDABLE) || 5348 test_bit(HCI_CONN_AUTH_INITIATOR, &conn->flags) || 5349 (conn->remote_auth & ~0x01) == HCI_AT_NO_BONDING) { 5350 struct hci_cp_io_capability_reply cp; 5351 5352 bacpy(&cp.bdaddr, &ev->bdaddr); 5353 /* Change the IO capability from KeyboardDisplay 5354 * to DisplayYesNo as it is not supported by BT spec. */ 5355 cp.capability = (conn->io_capability == 0x04) ? 5356 HCI_IO_DISPLAY_YESNO : conn->io_capability; 5357 5358 /* If we are initiators, there is no remote information yet */ 5359 if (conn->remote_auth == 0xff) { 5360 /* Request MITM protection if our IO caps allow it 5361 * except for the no-bonding case. 5362 */ 5363 if (conn->io_capability != HCI_IO_NO_INPUT_OUTPUT && 5364 conn->auth_type != HCI_AT_NO_BONDING) 5365 conn->auth_type |= 0x01; 5366 } else { 5367 conn->auth_type = hci_get_auth_req(conn); 5368 } 5369 5370 /* If we're not bondable, force one of the non-bondable 5371 * authentication requirement values. 5372 */ 5373 if (!hci_dev_test_flag(hdev, HCI_BONDABLE)) 5374 conn->auth_type &= HCI_AT_NO_BONDING_MITM; 5375 5376 cp.authentication = conn->auth_type; 5377 cp.oob_data = bredr_oob_data_present(conn); 5378 5379 hci_send_cmd(hdev, HCI_OP_IO_CAPABILITY_REPLY, 5380 sizeof(cp), &cp); 5381 } else { 5382 struct hci_cp_io_capability_neg_reply cp; 5383 5384 bacpy(&cp.bdaddr, &ev->bdaddr); 5385 cp.reason = HCI_ERROR_PAIRING_NOT_ALLOWED; 5386 5387 hci_send_cmd(hdev, HCI_OP_IO_CAPABILITY_NEG_REPLY, 5388 sizeof(cp), &cp); 5389 } 5390 5391unlock: 5392 hci_dev_unlock(hdev); 5393} 5394 5395static void hci_io_capa_reply_evt(struct hci_dev *hdev, void *data, 5396 struct sk_buff *skb) 5397{ 5398 struct hci_ev_io_capa_reply *ev = data; 5399 struct hci_conn *conn; 5400 5401 bt_dev_dbg(hdev, ""); 5402 5403 hci_dev_lock(hdev); 5404 5405 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr); 5406 if (!conn) 5407 goto unlock; 5408 5409 conn->remote_cap = ev->capability; 5410 conn->remote_auth = ev->authentication; 5411 5412unlock: 5413 hci_dev_unlock(hdev); 5414} 5415 5416static void hci_user_confirm_request_evt(struct hci_dev *hdev, void *data, 5417 struct sk_buff *skb) 5418{ 5419 struct hci_ev_user_confirm_req *ev = data; 5420 int loc_mitm, rem_mitm, confirm_hint = 0; 5421 struct hci_conn *conn; 5422 5423 bt_dev_dbg(hdev, ""); 5424 5425 hci_dev_lock(hdev); 5426 5427 if (!hci_dev_test_flag(hdev, HCI_MGMT)) 5428 goto unlock; 5429 5430 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr); 5431 if (!conn) 5432 goto unlock; 5433 5434 loc_mitm = (conn->auth_type & 0x01); 5435 rem_mitm = (conn->remote_auth & 0x01); 5436 5437 /* If we require MITM but the remote device can't provide that 5438 * (it has NoInputNoOutput) then reject the confirmation 5439 * request. We check the security level here since it doesn't 5440 * necessarily match conn->auth_type. 5441 */ 5442 if (conn->pending_sec_level > BT_SECURITY_MEDIUM && 5443 conn->remote_cap == HCI_IO_NO_INPUT_OUTPUT) { 5444 bt_dev_dbg(hdev, "Rejecting request: remote device can't provide MITM"); 5445 hci_send_cmd(hdev, HCI_OP_USER_CONFIRM_NEG_REPLY, 5446 sizeof(ev->bdaddr), &ev->bdaddr); 5447 goto unlock; 5448 } 5449 5450 /* If no side requires MITM protection; auto-accept */ 5451 if ((!loc_mitm || conn->remote_cap == HCI_IO_NO_INPUT_OUTPUT) && 5452 (!rem_mitm || conn->io_capability == HCI_IO_NO_INPUT_OUTPUT)) { 5453 5454 /* If we're not the initiators request authorization to 5455 * proceed from user space (mgmt_user_confirm with 5456 * confirm_hint set to 1). The exception is if neither 5457 * side had MITM or if the local IO capability is 5458 * NoInputNoOutput, in which case we do auto-accept 5459 */ 5460 if (!test_bit(HCI_CONN_AUTH_PEND, &conn->flags) && 5461 conn->io_capability != HCI_IO_NO_INPUT_OUTPUT && 5462 (loc_mitm || rem_mitm)) { 5463 bt_dev_dbg(hdev, "Confirming auto-accept as acceptor"); 5464 confirm_hint = 1; 5465 goto confirm; 5466 } 5467 5468 /* If there already exists link key in local host, leave the 5469 * decision to user space since the remote device could be 5470 * legitimate or malicious. 5471 */ 5472 if (hci_find_link_key(hdev, &ev->bdaddr)) { 5473 bt_dev_dbg(hdev, "Local host already has link key"); 5474 confirm_hint = 1; 5475 goto confirm; 5476 } 5477 5478 BT_DBG("Auto-accept of user confirmation with %ums delay", 5479 hdev->auto_accept_delay); 5480 5481 if (hdev->auto_accept_delay > 0) { 5482 int delay = msecs_to_jiffies(hdev->auto_accept_delay); 5483 queue_delayed_work(conn->hdev->workqueue, 5484 &conn->auto_accept_work, delay); 5485 goto unlock; 5486 } 5487 5488 hci_send_cmd(hdev, HCI_OP_USER_CONFIRM_REPLY, 5489 sizeof(ev->bdaddr), &ev->bdaddr); 5490 goto unlock; 5491 } 5492 5493confirm: 5494 mgmt_user_confirm_request(hdev, &ev->bdaddr, ACL_LINK, 0, 5495 le32_to_cpu(ev->passkey), confirm_hint); 5496 5497unlock: 5498 hci_dev_unlock(hdev); 5499} 5500 5501static void hci_user_passkey_request_evt(struct hci_dev *hdev, void *data, 5502 struct sk_buff *skb) 5503{ 5504 struct hci_ev_user_passkey_req *ev = data; 5505 5506 bt_dev_dbg(hdev, ""); 5507 5508 if (hci_dev_test_flag(hdev, HCI_MGMT)) 5509 mgmt_user_passkey_request(hdev, &ev->bdaddr, ACL_LINK, 0); 5510} 5511 5512static void hci_user_passkey_notify_evt(struct hci_dev *hdev, void *data, 5513 struct sk_buff *skb) 5514{ 5515 struct hci_ev_user_passkey_notify *ev = data; 5516 struct hci_conn *conn; 5517 5518 bt_dev_dbg(hdev, ""); 5519 5520 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr); 5521 if (!conn) 5522 return; 5523 5524 conn->passkey_notify = __le32_to_cpu(ev->passkey); 5525 conn->passkey_entered = 0; 5526 5527 if (hci_dev_test_flag(hdev, HCI_MGMT)) 5528 mgmt_user_passkey_notify(hdev, &conn->dst, conn->type, 5529 conn->dst_type, conn->passkey_notify, 5530 conn->passkey_entered); 5531} 5532 5533static void hci_keypress_notify_evt(struct hci_dev *hdev, void *data, 5534 struct sk_buff *skb) 5535{ 5536 struct hci_ev_keypress_notify *ev = data; 5537 struct hci_conn *conn; 5538 5539 bt_dev_dbg(hdev, ""); 5540 5541 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr); 5542 if (!conn) 5543 return; 5544 5545 switch (ev->type) { 5546 case HCI_KEYPRESS_STARTED: 5547 conn->passkey_entered = 0; 5548 return; 5549 5550 case HCI_KEYPRESS_ENTERED: 5551 conn->passkey_entered++; 5552 break; 5553 5554 case HCI_KEYPRESS_ERASED: 5555 conn->passkey_entered--; 5556 break; 5557 5558 case HCI_KEYPRESS_CLEARED: 5559 conn->passkey_entered = 0; 5560 break; 5561 5562 case HCI_KEYPRESS_COMPLETED: 5563 return; 5564 } 5565 5566 if (hci_dev_test_flag(hdev, HCI_MGMT)) 5567 mgmt_user_passkey_notify(hdev, &conn->dst, conn->type, 5568 conn->dst_type, conn->passkey_notify, 5569 conn->passkey_entered); 5570} 5571 5572static void hci_simple_pair_complete_evt(struct hci_dev *hdev, void *data, 5573 struct sk_buff *skb) 5574{ 5575 struct hci_ev_simple_pair_complete *ev = data; 5576 struct hci_conn *conn; 5577 5578 bt_dev_dbg(hdev, ""); 5579 5580 hci_dev_lock(hdev); 5581 5582 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr); 5583 if (!conn || !hci_conn_ssp_enabled(conn)) 5584 goto unlock; 5585 5586 /* Reset the authentication requirement to unknown */ 5587 conn->remote_auth = 0xff; 5588 5589 /* To avoid duplicate auth_failed events to user space we check 5590 * the HCI_CONN_AUTH_PEND flag which will be set if we 5591 * initiated the authentication. A traditional auth_complete 5592 * event gets always produced as initiator and is also mapped to 5593 * the mgmt_auth_failed event */ 5594 if (!test_bit(HCI_CONN_AUTH_PEND, &conn->flags) && ev->status) 5595 mgmt_auth_failed(conn, ev->status); 5596 5597 hci_conn_drop(conn); 5598 5599unlock: 5600 hci_dev_unlock(hdev); 5601} 5602 5603static void hci_remote_host_features_evt(struct hci_dev *hdev, void *data, 5604 struct sk_buff *skb) 5605{ 5606 struct hci_ev_remote_host_features *ev = data; 5607 struct inquiry_entry *ie; 5608 struct hci_conn *conn; 5609 5610 bt_dev_dbg(hdev, ""); 5611 5612 hci_dev_lock(hdev); 5613 5614 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr); 5615 if (conn) 5616 memcpy(conn->features[1], ev->features, 8); 5617 5618 ie = hci_inquiry_cache_lookup(hdev, &ev->bdaddr); 5619 if (ie) 5620 ie->data.ssp_mode = (ev->features[0] & LMP_HOST_SSP); 5621 5622 hci_dev_unlock(hdev); 5623} 5624 5625static void hci_remote_oob_data_request_evt(struct hci_dev *hdev, void *edata, 5626 struct sk_buff *skb) 5627{ 5628 struct hci_ev_remote_oob_data_request *ev = edata; 5629 struct oob_data *data; 5630 5631 bt_dev_dbg(hdev, ""); 5632 5633 hci_dev_lock(hdev); 5634 5635 if (!hci_dev_test_flag(hdev, HCI_MGMT)) 5636 goto unlock; 5637 5638 data = hci_find_remote_oob_data(hdev, &ev->bdaddr, BDADDR_BREDR); 5639 if (!data) { 5640 struct hci_cp_remote_oob_data_neg_reply cp; 5641 5642 bacpy(&cp.bdaddr, &ev->bdaddr); 5643 hci_send_cmd(hdev, HCI_OP_REMOTE_OOB_DATA_NEG_REPLY, 5644 sizeof(cp), &cp); 5645 goto unlock; 5646 } 5647 5648 if (bredr_sc_enabled(hdev)) { 5649 struct hci_cp_remote_oob_ext_data_reply cp; 5650 5651 bacpy(&cp.bdaddr, &ev->bdaddr); 5652 if (hci_dev_test_flag(hdev, HCI_SC_ONLY)) { 5653 memset(cp.hash192, 0, sizeof(cp.hash192)); 5654 memset(cp.rand192, 0, sizeof(cp.rand192)); 5655 } else { 5656 memcpy(cp.hash192, data->hash192, sizeof(cp.hash192)); 5657 memcpy(cp.rand192, data->rand192, sizeof(cp.rand192)); 5658 } 5659 memcpy(cp.hash256, data->hash256, sizeof(cp.hash256)); 5660 memcpy(cp.rand256, data->rand256, sizeof(cp.rand256)); 5661 5662 hci_send_cmd(hdev, HCI_OP_REMOTE_OOB_EXT_DATA_REPLY, 5663 sizeof(cp), &cp); 5664 } else { 5665 struct hci_cp_remote_oob_data_reply cp; 5666 5667 bacpy(&cp.bdaddr, &ev->bdaddr); 5668 memcpy(cp.hash, data->hash192, sizeof(cp.hash)); 5669 memcpy(cp.rand, data->rand192, sizeof(cp.rand)); 5670 5671 hci_send_cmd(hdev, HCI_OP_REMOTE_OOB_DATA_REPLY, 5672 sizeof(cp), &cp); 5673 } 5674 5675unlock: 5676 hci_dev_unlock(hdev); 5677} 5678 5679#if IS_ENABLED(CONFIG_BT_HS) 5680static void hci_chan_selected_evt(struct hci_dev *hdev, void *data, 5681 struct sk_buff *skb) 5682{ 5683 struct hci_ev_channel_selected *ev = data; 5684 struct hci_conn *hcon; 5685 5686 bt_dev_dbg(hdev, "handle 0x%2.2x", ev->phy_handle); 5687 5688 hcon = hci_conn_hash_lookup_handle(hdev, ev->phy_handle); 5689 if (!hcon) 5690 return; 5691 5692 amp_read_loc_assoc_final_data(hdev, hcon); 5693} 5694 5695static void hci_phy_link_complete_evt(struct hci_dev *hdev, void *data, 5696 struct sk_buff *skb) 5697{ 5698 struct hci_ev_phy_link_complete *ev = data; 5699 struct hci_conn *hcon, *bredr_hcon; 5700 5701 bt_dev_dbg(hdev, "handle 0x%2.2x status 0x%2.2x", ev->phy_handle, 5702 ev->status); 5703 5704 hci_dev_lock(hdev); 5705 5706 hcon = hci_conn_hash_lookup_handle(hdev, ev->phy_handle); 5707 if (!hcon) 5708 goto unlock; 5709 5710 if (!hcon->amp_mgr) 5711 goto unlock; 5712 5713 if (ev->status) { 5714 hci_conn_del(hcon); 5715 goto unlock; 5716 } 5717 5718 bredr_hcon = hcon->amp_mgr->l2cap_conn->hcon; 5719 5720 hcon->state = BT_CONNECTED; 5721 bacpy(&hcon->dst, &bredr_hcon->dst); 5722 5723 hci_conn_hold(hcon); 5724 hcon->disc_timeout = HCI_DISCONN_TIMEOUT; 5725 hci_conn_drop(hcon); 5726 5727 hci_debugfs_create_conn(hcon); 5728 hci_conn_add_sysfs(hcon); 5729 5730 amp_physical_cfm(bredr_hcon, hcon); 5731 5732unlock: 5733 hci_dev_unlock(hdev); 5734} 5735 5736static void hci_loglink_complete_evt(struct hci_dev *hdev, void *data, 5737 struct sk_buff *skb) 5738{ 5739 struct hci_ev_logical_link_complete *ev = data; 5740 struct hci_conn *hcon; 5741 struct hci_chan *hchan; 5742 struct amp_mgr *mgr; 5743 5744 bt_dev_dbg(hdev, "log_handle 0x%4.4x phy_handle 0x%2.2x status 0x%2.2x", 5745 le16_to_cpu(ev->handle), ev->phy_handle, ev->status); 5746 5747 hcon = hci_conn_hash_lookup_handle(hdev, ev->phy_handle); 5748 if (!hcon) 5749 return; 5750 5751 /* Create AMP hchan */ 5752 hchan = hci_chan_create(hcon); 5753 if (!hchan) 5754 return; 5755 5756 hchan->handle = le16_to_cpu(ev->handle); 5757 hchan->amp = true; 5758 5759 BT_DBG("hcon %p mgr %p hchan %p", hcon, hcon->amp_mgr, hchan); 5760 5761 mgr = hcon->amp_mgr; 5762 if (mgr && mgr->bredr_chan) { 5763 struct l2cap_chan *bredr_chan = mgr->bredr_chan; 5764 5765 l2cap_chan_lock(bredr_chan); 5766 5767 bredr_chan->conn->mtu = hdev->block_mtu; 5768 l2cap_logical_cfm(bredr_chan, hchan, 0); 5769 hci_conn_hold(hcon); 5770 5771 l2cap_chan_unlock(bredr_chan); 5772 } 5773} 5774 5775static void hci_disconn_loglink_complete_evt(struct hci_dev *hdev, void *data, 5776 struct sk_buff *skb) 5777{ 5778 struct hci_ev_disconn_logical_link_complete *ev = data; 5779 struct hci_chan *hchan; 5780 5781 bt_dev_dbg(hdev, "handle 0x%4.4x status 0x%2.2x", 5782 le16_to_cpu(ev->handle), ev->status); 5783 5784 if (ev->status) 5785 return; 5786 5787 hci_dev_lock(hdev); 5788 5789 hchan = hci_chan_lookup_handle(hdev, le16_to_cpu(ev->handle)); 5790 if (!hchan || !hchan->amp) 5791 goto unlock; 5792 5793 amp_destroy_logical_link(hchan, ev->reason); 5794 5795unlock: 5796 hci_dev_unlock(hdev); 5797} 5798 5799static void hci_disconn_phylink_complete_evt(struct hci_dev *hdev, void *data, 5800 struct sk_buff *skb) 5801{ 5802 struct hci_ev_disconn_phy_link_complete *ev = data; 5803 struct hci_conn *hcon; 5804 5805 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 5806 5807 if (ev->status) 5808 return; 5809 5810 hci_dev_lock(hdev); 5811 5812 hcon = hci_conn_hash_lookup_handle(hdev, ev->phy_handle); 5813 if (hcon && hcon->type == AMP_LINK) { 5814 hcon->state = BT_CLOSED; 5815 hci_disconn_cfm(hcon, ev->reason); 5816 hci_conn_del(hcon); 5817 } 5818 5819 hci_dev_unlock(hdev); 5820} 5821#endif 5822 5823static void le_conn_update_addr(struct hci_conn *conn, bdaddr_t *bdaddr, 5824 u8 bdaddr_type, bdaddr_t *local_rpa) 5825{ 5826 if (conn->out) { 5827 conn->dst_type = bdaddr_type; 5828 conn->resp_addr_type = bdaddr_type; 5829 bacpy(&conn->resp_addr, bdaddr); 5830 5831 /* Check if the controller has set a Local RPA then it must be 5832 * used instead or hdev->rpa. 5833 */ 5834 if (local_rpa && bacmp(local_rpa, BDADDR_ANY)) { 5835 conn->init_addr_type = ADDR_LE_DEV_RANDOM; 5836 bacpy(&conn->init_addr, local_rpa); 5837 } else if (hci_dev_test_flag(conn->hdev, HCI_PRIVACY)) { 5838 conn->init_addr_type = ADDR_LE_DEV_RANDOM; 5839 bacpy(&conn->init_addr, &conn->hdev->rpa); 5840 } else { 5841 hci_copy_identity_address(conn->hdev, &conn->init_addr, 5842 &conn->init_addr_type); 5843 } 5844 } else { 5845 conn->resp_addr_type = conn->hdev->adv_addr_type; 5846 /* Check if the controller has set a Local RPA then it must be 5847 * used instead or hdev->rpa. 5848 */ 5849 if (local_rpa && bacmp(local_rpa, BDADDR_ANY)) { 5850 conn->resp_addr_type = ADDR_LE_DEV_RANDOM; 5851 bacpy(&conn->resp_addr, local_rpa); 5852 } else if (conn->hdev->adv_addr_type == ADDR_LE_DEV_RANDOM) { 5853 /* In case of ext adv, resp_addr will be updated in 5854 * Adv Terminated event. 5855 */ 5856 if (!ext_adv_capable(conn->hdev)) 5857 bacpy(&conn->resp_addr, 5858 &conn->hdev->random_addr); 5859 } else { 5860 bacpy(&conn->resp_addr, &conn->hdev->bdaddr); 5861 } 5862 5863 conn->init_addr_type = bdaddr_type; 5864 bacpy(&conn->init_addr, bdaddr); 5865 5866 /* For incoming connections, set the default minimum 5867 * and maximum connection interval. They will be used 5868 * to check if the parameters are in range and if not 5869 * trigger the connection update procedure. 5870 */ 5871 conn->le_conn_min_interval = conn->hdev->le_conn_min_interval; 5872 conn->le_conn_max_interval = conn->hdev->le_conn_max_interval; 5873 } 5874} 5875 5876static void le_conn_complete_evt(struct hci_dev *hdev, u8 status, 5877 bdaddr_t *bdaddr, u8 bdaddr_type, 5878 bdaddr_t *local_rpa, u8 role, u16 handle, 5879 u16 interval, u16 latency, 5880 u16 supervision_timeout) 5881{ 5882 struct hci_conn_params *params; 5883 struct hci_conn *conn; 5884 struct smp_irk *irk; 5885 u8 addr_type; 5886 5887 hci_dev_lock(hdev); 5888 5889 /* All controllers implicitly stop advertising in the event of a 5890 * connection, so ensure that the state bit is cleared. 5891 */ 5892 hci_dev_clear_flag(hdev, HCI_LE_ADV); 5893 5894 conn = hci_conn_hash_lookup_ba(hdev, LE_LINK, bdaddr); 5895 if (!conn) { 5896 /* In case of error status and there is no connection pending 5897 * just unlock as there is nothing to cleanup. 5898 */ 5899 if (status) 5900 goto unlock; 5901 5902 conn = hci_conn_add_unset(hdev, LE_LINK, bdaddr, role); 5903 if (!conn) { 5904 bt_dev_err(hdev, "no memory for new connection"); 5905 goto unlock; 5906 } 5907 5908 conn->dst_type = bdaddr_type; 5909 5910 /* If we didn't have a hci_conn object previously 5911 * but we're in central role this must be something 5912 * initiated using an accept list. Since accept list based 5913 * connections are not "first class citizens" we don't 5914 * have full tracking of them. Therefore, we go ahead 5915 * with a "best effort" approach of determining the 5916 * initiator address based on the HCI_PRIVACY flag. 5917 */ 5918 if (conn->out) { 5919 conn->resp_addr_type = bdaddr_type; 5920 bacpy(&conn->resp_addr, bdaddr); 5921 if (hci_dev_test_flag(hdev, HCI_PRIVACY)) { 5922 conn->init_addr_type = ADDR_LE_DEV_RANDOM; 5923 bacpy(&conn->init_addr, &hdev->rpa); 5924 } else { 5925 hci_copy_identity_address(hdev, 5926 &conn->init_addr, 5927 &conn->init_addr_type); 5928 } 5929 } 5930 } else { 5931 cancel_delayed_work(&conn->le_conn_timeout); 5932 } 5933 5934 /* The HCI_LE_Connection_Complete event is only sent once per connection. 5935 * Processing it more than once per connection can corrupt kernel memory. 5936 * 5937 * As the connection handle is set here for the first time, it indicates 5938 * whether the connection is already set up. 5939 */ 5940 if (!HCI_CONN_HANDLE_UNSET(conn->handle)) { 5941 bt_dev_err(hdev, "Ignoring HCI_Connection_Complete for existing connection"); 5942 goto unlock; 5943 } 5944 5945 le_conn_update_addr(conn, bdaddr, bdaddr_type, local_rpa); 5946 5947 /* Lookup the identity address from the stored connection 5948 * address and address type. 5949 * 5950 * When establishing connections to an identity address, the 5951 * connection procedure will store the resolvable random 5952 * address first. Now if it can be converted back into the 5953 * identity address, start using the identity address from 5954 * now on. 5955 */ 5956 irk = hci_get_irk(hdev, &conn->dst, conn->dst_type); 5957 if (irk) { 5958 bacpy(&conn->dst, &irk->bdaddr); 5959 conn->dst_type = irk->addr_type; 5960 } 5961 5962 conn->dst_type = ev_bdaddr_type(hdev, conn->dst_type, NULL); 5963 5964 /* All connection failure handling is taken care of by the 5965 * hci_conn_failed function which is triggered by the HCI 5966 * request completion callbacks used for connecting. 5967 */ 5968 if (status || hci_conn_set_handle(conn, handle)) 5969 goto unlock; 5970 5971 /* Drop the connection if it has been aborted */ 5972 if (test_bit(HCI_CONN_CANCEL, &conn->flags)) { 5973 hci_conn_drop(conn); 5974 goto unlock; 5975 } 5976 5977 if (conn->dst_type == ADDR_LE_DEV_PUBLIC) 5978 addr_type = BDADDR_LE_PUBLIC; 5979 else 5980 addr_type = BDADDR_LE_RANDOM; 5981 5982 /* Drop the connection if the device is blocked */ 5983 if (hci_bdaddr_list_lookup(&hdev->reject_list, &conn->dst, addr_type)) { 5984 hci_conn_drop(conn); 5985 goto unlock; 5986 } 5987 5988 mgmt_device_connected(hdev, conn, NULL, 0); 5989 5990 conn->sec_level = BT_SECURITY_LOW; 5991 conn->state = BT_CONFIG; 5992 5993 /* Store current advertising instance as connection advertising instance 5994 * when sotfware rotation is in use so it can be re-enabled when 5995 * disconnected. 5996 */ 5997 if (!ext_adv_capable(hdev)) 5998 conn->adv_instance = hdev->cur_adv_instance; 5999 6000 conn->le_conn_interval = interval; 6001 conn->le_conn_latency = latency; 6002 conn->le_supv_timeout = supervision_timeout; 6003 6004 hci_debugfs_create_conn(conn); 6005 hci_conn_add_sysfs(conn); 6006 6007 /* The remote features procedure is defined for central 6008 * role only. So only in case of an initiated connection 6009 * request the remote features. 6010 * 6011 * If the local controller supports peripheral-initiated features 6012 * exchange, then requesting the remote features in peripheral 6013 * role is possible. Otherwise just transition into the 6014 * connected state without requesting the remote features. 6015 */ 6016 if (conn->out || 6017 (hdev->le_features[0] & HCI_LE_PERIPHERAL_FEATURES)) { 6018 struct hci_cp_le_read_remote_features cp; 6019 6020 cp.handle = __cpu_to_le16(conn->handle); 6021 6022 hci_send_cmd(hdev, HCI_OP_LE_READ_REMOTE_FEATURES, 6023 sizeof(cp), &cp); 6024 6025 hci_conn_hold(conn); 6026 } else { 6027 conn->state = BT_CONNECTED; 6028 hci_connect_cfm(conn, status); 6029 } 6030 6031 params = hci_pend_le_action_lookup(&hdev->pend_le_conns, &conn->dst, 6032 conn->dst_type); 6033 if (params) { 6034 hci_pend_le_list_del_init(params); 6035 if (params->conn) { 6036 hci_conn_drop(params->conn); 6037 hci_conn_put(params->conn); 6038 params->conn = NULL; 6039 } 6040 } 6041 6042unlock: 6043 hci_update_passive_scan(hdev); 6044 hci_dev_unlock(hdev); 6045} 6046 6047static void hci_le_conn_complete_evt(struct hci_dev *hdev, void *data, 6048 struct sk_buff *skb) 6049{ 6050 struct hci_ev_le_conn_complete *ev = data; 6051 6052 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 6053 6054 le_conn_complete_evt(hdev, ev->status, &ev->bdaddr, ev->bdaddr_type, 6055 NULL, ev->role, le16_to_cpu(ev->handle), 6056 le16_to_cpu(ev->interval), 6057 le16_to_cpu(ev->latency), 6058 le16_to_cpu(ev->supervision_timeout)); 6059} 6060 6061static void hci_le_enh_conn_complete_evt(struct hci_dev *hdev, void *data, 6062 struct sk_buff *skb) 6063{ 6064 struct hci_ev_le_enh_conn_complete *ev = data; 6065 6066 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 6067 6068 le_conn_complete_evt(hdev, ev->status, &ev->bdaddr, ev->bdaddr_type, 6069 &ev->local_rpa, ev->role, le16_to_cpu(ev->handle), 6070 le16_to_cpu(ev->interval), 6071 le16_to_cpu(ev->latency), 6072 le16_to_cpu(ev->supervision_timeout)); 6073} 6074 6075static void hci_le_ext_adv_term_evt(struct hci_dev *hdev, void *data, 6076 struct sk_buff *skb) 6077{ 6078 struct hci_evt_le_ext_adv_set_term *ev = data; 6079 struct hci_conn *conn; 6080 struct adv_info *adv, *n; 6081 6082 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 6083 6084 /* The Bluetooth Core 5.3 specification clearly states that this event 6085 * shall not be sent when the Host disables the advertising set. So in 6086 * case of HCI_ERROR_CANCELLED_BY_HOST, just ignore the event. 6087 * 6088 * When the Host disables an advertising set, all cleanup is done via 6089 * its command callback and not needed to be duplicated here. 6090 */ 6091 if (ev->status == HCI_ERROR_CANCELLED_BY_HOST) { 6092 bt_dev_warn_ratelimited(hdev, "Unexpected advertising set terminated event"); 6093 return; 6094 } 6095 6096 hci_dev_lock(hdev); 6097 6098 adv = hci_find_adv_instance(hdev, ev->handle); 6099 6100 if (ev->status) { 6101 if (!adv) 6102 goto unlock; 6103 6104 /* Remove advertising as it has been terminated */ 6105 hci_remove_adv_instance(hdev, ev->handle); 6106 mgmt_advertising_removed(NULL, hdev, ev->handle); 6107 6108 list_for_each_entry_safe(adv, n, &hdev->adv_instances, list) { 6109 if (adv->enabled) 6110 goto unlock; 6111 } 6112 6113 /* We are no longer advertising, clear HCI_LE_ADV */ 6114 hci_dev_clear_flag(hdev, HCI_LE_ADV); 6115 goto unlock; 6116 } 6117 6118 if (adv) 6119 adv->enabled = false; 6120 6121 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->conn_handle)); 6122 if (conn) { 6123 /* Store handle in the connection so the correct advertising 6124 * instance can be re-enabled when disconnected. 6125 */ 6126 conn->adv_instance = ev->handle; 6127 6128 if (hdev->adv_addr_type != ADDR_LE_DEV_RANDOM || 6129 bacmp(&conn->resp_addr, BDADDR_ANY)) 6130 goto unlock; 6131 6132 if (!ev->handle) { 6133 bacpy(&conn->resp_addr, &hdev->random_addr); 6134 goto unlock; 6135 } 6136 6137 if (adv) 6138 bacpy(&conn->resp_addr, &adv->random_addr); 6139 } 6140 6141unlock: 6142 hci_dev_unlock(hdev); 6143} 6144 6145static void hci_le_conn_update_complete_evt(struct hci_dev *hdev, void *data, 6146 struct sk_buff *skb) 6147{ 6148 struct hci_ev_le_conn_update_complete *ev = data; 6149 struct hci_conn *conn; 6150 6151 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 6152 6153 if (ev->status) 6154 return; 6155 6156 hci_dev_lock(hdev); 6157 6158 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle)); 6159 if (conn) { 6160 conn->le_conn_interval = le16_to_cpu(ev->interval); 6161 conn->le_conn_latency = le16_to_cpu(ev->latency); 6162 conn->le_supv_timeout = le16_to_cpu(ev->supervision_timeout); 6163 } 6164 6165 hci_dev_unlock(hdev); 6166} 6167 6168/* This function requires the caller holds hdev->lock */ 6169static struct hci_conn *check_pending_le_conn(struct hci_dev *hdev, 6170 bdaddr_t *addr, 6171 u8 addr_type, bool addr_resolved, 6172 u8 adv_type) 6173{ 6174 struct hci_conn *conn; 6175 struct hci_conn_params *params; 6176 6177 /* If the event is not connectable don't proceed further */ 6178 if (adv_type != LE_ADV_IND && adv_type != LE_ADV_DIRECT_IND) 6179 return NULL; 6180 6181 /* Ignore if the device is blocked or hdev is suspended */ 6182 if (hci_bdaddr_list_lookup(&hdev->reject_list, addr, addr_type) || 6183 hdev->suspended) 6184 return NULL; 6185 6186 /* Most controller will fail if we try to create new connections 6187 * while we have an existing one in peripheral role. 6188 */ 6189 if (hdev->conn_hash.le_num_peripheral > 0 && 6190 (!test_bit(HCI_QUIRK_VALID_LE_STATES, &hdev->quirks) || 6191 !(hdev->le_states[3] & 0x10))) 6192 return NULL; 6193 6194 /* If we're not connectable only connect devices that we have in 6195 * our pend_le_conns list. 6196 */ 6197 params = hci_pend_le_action_lookup(&hdev->pend_le_conns, addr, 6198 addr_type); 6199 if (!params) 6200 return NULL; 6201 6202 if (!params->explicit_connect) { 6203 switch (params->auto_connect) { 6204 case HCI_AUTO_CONN_DIRECT: 6205 /* Only devices advertising with ADV_DIRECT_IND are 6206 * triggering a connection attempt. This is allowing 6207 * incoming connections from peripheral devices. 6208 */ 6209 if (adv_type != LE_ADV_DIRECT_IND) 6210 return NULL; 6211 break; 6212 case HCI_AUTO_CONN_ALWAYS: 6213 /* Devices advertising with ADV_IND or ADV_DIRECT_IND 6214 * are triggering a connection attempt. This means 6215 * that incoming connections from peripheral device are 6216 * accepted and also outgoing connections to peripheral 6217 * devices are established when found. 6218 */ 6219 break; 6220 default: 6221 return NULL; 6222 } 6223 } 6224 6225 conn = hci_connect_le(hdev, addr, addr_type, addr_resolved, 6226 BT_SECURITY_LOW, hdev->def_le_autoconnect_timeout, 6227 HCI_ROLE_MASTER); 6228 if (!IS_ERR(conn)) { 6229 /* If HCI_AUTO_CONN_EXPLICIT is set, conn is already owned 6230 * by higher layer that tried to connect, if no then 6231 * store the pointer since we don't really have any 6232 * other owner of the object besides the params that 6233 * triggered it. This way we can abort the connection if 6234 * the parameters get removed and keep the reference 6235 * count consistent once the connection is established. 6236 */ 6237 6238 if (!params->explicit_connect) 6239 params->conn = hci_conn_get(conn); 6240 6241 return conn; 6242 } 6243 6244 switch (PTR_ERR(conn)) { 6245 case -EBUSY: 6246 /* If hci_connect() returns -EBUSY it means there is already 6247 * an LE connection attempt going on. Since controllers don't 6248 * support more than one connection attempt at the time, we 6249 * don't consider this an error case. 6250 */ 6251 break; 6252 default: 6253 BT_DBG("Failed to connect: err %ld", PTR_ERR(conn)); 6254 return NULL; 6255 } 6256 6257 return NULL; 6258} 6259 6260static void process_adv_report(struct hci_dev *hdev, u8 type, bdaddr_t *bdaddr, 6261 u8 bdaddr_type, bdaddr_t *direct_addr, 6262 u8 direct_addr_type, s8 rssi, u8 *data, u8 len, 6263 bool ext_adv, bool ctl_time, u64 instant) 6264{ 6265 struct discovery_state *d = &hdev->discovery; 6266 struct smp_irk *irk; 6267 struct hci_conn *conn; 6268 bool match, bdaddr_resolved; 6269 u32 flags; 6270 u8 *ptr; 6271 6272 switch (type) { 6273 case LE_ADV_IND: 6274 case LE_ADV_DIRECT_IND: 6275 case LE_ADV_SCAN_IND: 6276 case LE_ADV_NONCONN_IND: 6277 case LE_ADV_SCAN_RSP: 6278 break; 6279 default: 6280 bt_dev_err_ratelimited(hdev, "unknown advertising packet " 6281 "type: 0x%02x", type); 6282 return; 6283 } 6284 6285 if (len > max_adv_len(hdev)) { 6286 bt_dev_err_ratelimited(hdev, 6287 "adv larger than maximum supported"); 6288 return; 6289 } 6290 6291 /* Find the end of the data in case the report contains padded zero 6292 * bytes at the end causing an invalid length value. 6293 * 6294 * When data is NULL, len is 0 so there is no need for extra ptr 6295 * check as 'ptr < data + 0' is already false in such case. 6296 */ 6297 for (ptr = data; ptr < data + len && *ptr; ptr += *ptr + 1) { 6298 if (ptr + 1 + *ptr > data + len) 6299 break; 6300 } 6301 6302 /* Adjust for actual length. This handles the case when remote 6303 * device is advertising with incorrect data length. 6304 */ 6305 len = ptr - data; 6306 6307 /* If the direct address is present, then this report is from 6308 * a LE Direct Advertising Report event. In that case it is 6309 * important to see if the address is matching the local 6310 * controller address. 6311 */ 6312 if (!hci_dev_test_flag(hdev, HCI_MESH) && direct_addr) { 6313 direct_addr_type = ev_bdaddr_type(hdev, direct_addr_type, 6314 &bdaddr_resolved); 6315 6316 /* Only resolvable random addresses are valid for these 6317 * kind of reports and others can be ignored. 6318 */ 6319 if (!hci_bdaddr_is_rpa(direct_addr, direct_addr_type)) 6320 return; 6321 6322 /* If the controller is not using resolvable random 6323 * addresses, then this report can be ignored. 6324 */ 6325 if (!hci_dev_test_flag(hdev, HCI_PRIVACY)) 6326 return; 6327 6328 /* If the local IRK of the controller does not match 6329 * with the resolvable random address provided, then 6330 * this report can be ignored. 6331 */ 6332 if (!smp_irk_matches(hdev, hdev->irk, direct_addr)) 6333 return; 6334 } 6335 6336 /* Check if we need to convert to identity address */ 6337 irk = hci_get_irk(hdev, bdaddr, bdaddr_type); 6338 if (irk) { 6339 bdaddr = &irk->bdaddr; 6340 bdaddr_type = irk->addr_type; 6341 } 6342 6343 bdaddr_type = ev_bdaddr_type(hdev, bdaddr_type, &bdaddr_resolved); 6344 6345 /* Check if we have been requested to connect to this device. 6346 * 6347 * direct_addr is set only for directed advertising reports (it is NULL 6348 * for advertising reports) and is already verified to be RPA above. 6349 */ 6350 conn = check_pending_le_conn(hdev, bdaddr, bdaddr_type, bdaddr_resolved, 6351 type); 6352 if (!ext_adv && conn && type == LE_ADV_IND && 6353 len <= max_adv_len(hdev)) { 6354 /* Store report for later inclusion by 6355 * mgmt_device_connected 6356 */ 6357 memcpy(conn->le_adv_data, data, len); 6358 conn->le_adv_data_len = len; 6359 } 6360 6361 if (type == LE_ADV_NONCONN_IND || type == LE_ADV_SCAN_IND) 6362 flags = MGMT_DEV_FOUND_NOT_CONNECTABLE; 6363 else 6364 flags = 0; 6365 6366 /* All scan results should be sent up for Mesh systems */ 6367 if (hci_dev_test_flag(hdev, HCI_MESH)) { 6368 mgmt_device_found(hdev, bdaddr, LE_LINK, bdaddr_type, NULL, 6369 rssi, flags, data, len, NULL, 0, instant); 6370 return; 6371 } 6372 6373 /* Passive scanning shouldn't trigger any device found events, 6374 * except for devices marked as CONN_REPORT for which we do send 6375 * device found events, or advertisement monitoring requested. 6376 */ 6377 if (hdev->le_scan_type == LE_SCAN_PASSIVE) { 6378 if (type == LE_ADV_DIRECT_IND) 6379 return; 6380 6381 if (!hci_pend_le_action_lookup(&hdev->pend_le_reports, 6382 bdaddr, bdaddr_type) && 6383 idr_is_empty(&hdev->adv_monitors_idr)) 6384 return; 6385 6386 mgmt_device_found(hdev, bdaddr, LE_LINK, bdaddr_type, NULL, 6387 rssi, flags, data, len, NULL, 0, 0); 6388 return; 6389 } 6390 6391 /* When receiving a scan response, then there is no way to 6392 * know if the remote device is connectable or not. However 6393 * since scan responses are merged with a previously seen 6394 * advertising report, the flags field from that report 6395 * will be used. 6396 * 6397 * In the unlikely case that a controller just sends a scan 6398 * response event that doesn't match the pending report, then 6399 * it is marked as a standalone SCAN_RSP. 6400 */ 6401 if (type == LE_ADV_SCAN_RSP) 6402 flags = MGMT_DEV_FOUND_SCAN_RSP; 6403 6404 /* If there's nothing pending either store the data from this 6405 * event or send an immediate device found event if the data 6406 * should not be stored for later. 6407 */ 6408 if (!ext_adv && !has_pending_adv_report(hdev)) { 6409 /* If the report will trigger a SCAN_REQ store it for 6410 * later merging. 6411 */ 6412 if (type == LE_ADV_IND || type == LE_ADV_SCAN_IND) { 6413 store_pending_adv_report(hdev, bdaddr, bdaddr_type, 6414 rssi, flags, data, len); 6415 return; 6416 } 6417 6418 mgmt_device_found(hdev, bdaddr, LE_LINK, bdaddr_type, NULL, 6419 rssi, flags, data, len, NULL, 0, 0); 6420 return; 6421 } 6422 6423 /* Check if the pending report is for the same device as the new one */ 6424 match = (!bacmp(bdaddr, &d->last_adv_addr) && 6425 bdaddr_type == d->last_adv_addr_type); 6426 6427 /* If the pending data doesn't match this report or this isn't a 6428 * scan response (e.g. we got a duplicate ADV_IND) then force 6429 * sending of the pending data. 6430 */ 6431 if (type != LE_ADV_SCAN_RSP || !match) { 6432 /* Send out whatever is in the cache, but skip duplicates */ 6433 if (!match) 6434 mgmt_device_found(hdev, &d->last_adv_addr, LE_LINK, 6435 d->last_adv_addr_type, NULL, 6436 d->last_adv_rssi, d->last_adv_flags, 6437 d->last_adv_data, 6438 d->last_adv_data_len, NULL, 0, 0); 6439 6440 /* If the new report will trigger a SCAN_REQ store it for 6441 * later merging. 6442 */ 6443 if (!ext_adv && (type == LE_ADV_IND || 6444 type == LE_ADV_SCAN_IND)) { 6445 store_pending_adv_report(hdev, bdaddr, bdaddr_type, 6446 rssi, flags, data, len); 6447 return; 6448 } 6449 6450 /* The advertising reports cannot be merged, so clear 6451 * the pending report and send out a device found event. 6452 */ 6453 clear_pending_adv_report(hdev); 6454 mgmt_device_found(hdev, bdaddr, LE_LINK, bdaddr_type, NULL, 6455 rssi, flags, data, len, NULL, 0, 0); 6456 return; 6457 } 6458 6459 /* If we get here we've got a pending ADV_IND or ADV_SCAN_IND and 6460 * the new event is a SCAN_RSP. We can therefore proceed with 6461 * sending a merged device found event. 6462 */ 6463 mgmt_device_found(hdev, &d->last_adv_addr, LE_LINK, 6464 d->last_adv_addr_type, NULL, rssi, d->last_adv_flags, 6465 d->last_adv_data, d->last_adv_data_len, data, len, 0); 6466 clear_pending_adv_report(hdev); 6467} 6468 6469static void hci_le_adv_report_evt(struct hci_dev *hdev, void *data, 6470 struct sk_buff *skb) 6471{ 6472 struct hci_ev_le_advertising_report *ev = data; 6473 u64 instant = jiffies; 6474 6475 if (!ev->num) 6476 return; 6477 6478 hci_dev_lock(hdev); 6479 6480 while (ev->num--) { 6481 struct hci_ev_le_advertising_info *info; 6482 s8 rssi; 6483 6484 info = hci_le_ev_skb_pull(hdev, skb, 6485 HCI_EV_LE_ADVERTISING_REPORT, 6486 sizeof(*info)); 6487 if (!info) 6488 break; 6489 6490 if (!hci_le_ev_skb_pull(hdev, skb, HCI_EV_LE_ADVERTISING_REPORT, 6491 info->length + 1)) 6492 break; 6493 6494 if (info->length <= max_adv_len(hdev)) { 6495 rssi = info->data[info->length]; 6496 process_adv_report(hdev, info->type, &info->bdaddr, 6497 info->bdaddr_type, NULL, 0, rssi, 6498 info->data, info->length, false, 6499 false, instant); 6500 } else { 6501 bt_dev_err(hdev, "Dropping invalid advertising data"); 6502 } 6503 } 6504 6505 hci_dev_unlock(hdev); 6506} 6507 6508static u8 ext_evt_type_to_legacy(struct hci_dev *hdev, u16 evt_type) 6509{ 6510 if (evt_type & LE_EXT_ADV_LEGACY_PDU) { 6511 switch (evt_type) { 6512 case LE_LEGACY_ADV_IND: 6513 return LE_ADV_IND; 6514 case LE_LEGACY_ADV_DIRECT_IND: 6515 return LE_ADV_DIRECT_IND; 6516 case LE_LEGACY_ADV_SCAN_IND: 6517 return LE_ADV_SCAN_IND; 6518 case LE_LEGACY_NONCONN_IND: 6519 return LE_ADV_NONCONN_IND; 6520 case LE_LEGACY_SCAN_RSP_ADV: 6521 case LE_LEGACY_SCAN_RSP_ADV_SCAN: 6522 return LE_ADV_SCAN_RSP; 6523 } 6524 6525 goto invalid; 6526 } 6527 6528 if (evt_type & LE_EXT_ADV_CONN_IND) { 6529 if (evt_type & LE_EXT_ADV_DIRECT_IND) 6530 return LE_ADV_DIRECT_IND; 6531 6532 return LE_ADV_IND; 6533 } 6534 6535 if (evt_type & LE_EXT_ADV_SCAN_RSP) 6536 return LE_ADV_SCAN_RSP; 6537 6538 if (evt_type & LE_EXT_ADV_SCAN_IND) 6539 return LE_ADV_SCAN_IND; 6540 6541 if (evt_type == LE_EXT_ADV_NON_CONN_IND || 6542 evt_type & LE_EXT_ADV_DIRECT_IND) 6543 return LE_ADV_NONCONN_IND; 6544 6545invalid: 6546 bt_dev_err_ratelimited(hdev, "Unknown advertising packet type: 0x%02x", 6547 evt_type); 6548 6549 return LE_ADV_INVALID; 6550} 6551 6552static void hci_le_ext_adv_report_evt(struct hci_dev *hdev, void *data, 6553 struct sk_buff *skb) 6554{ 6555 struct hci_ev_le_ext_adv_report *ev = data; 6556 u64 instant = jiffies; 6557 6558 if (!ev->num) 6559 return; 6560 6561 hci_dev_lock(hdev); 6562 6563 while (ev->num--) { 6564 struct hci_ev_le_ext_adv_info *info; 6565 u8 legacy_evt_type; 6566 u16 evt_type; 6567 6568 info = hci_le_ev_skb_pull(hdev, skb, HCI_EV_LE_EXT_ADV_REPORT, 6569 sizeof(*info)); 6570 if (!info) 6571 break; 6572 6573 if (!hci_le_ev_skb_pull(hdev, skb, HCI_EV_LE_EXT_ADV_REPORT, 6574 info->length)) 6575 break; 6576 6577 evt_type = __le16_to_cpu(info->type) & LE_EXT_ADV_EVT_TYPE_MASK; 6578 legacy_evt_type = ext_evt_type_to_legacy(hdev, evt_type); 6579 if (legacy_evt_type != LE_ADV_INVALID) { 6580 process_adv_report(hdev, legacy_evt_type, &info->bdaddr, 6581 info->bdaddr_type, NULL, 0, 6582 info->rssi, info->data, info->length, 6583 !(evt_type & LE_EXT_ADV_LEGACY_PDU), 6584 false, instant); 6585 } 6586 } 6587 6588 hci_dev_unlock(hdev); 6589} 6590 6591static int hci_le_pa_term_sync(struct hci_dev *hdev, __le16 handle) 6592{ 6593 struct hci_cp_le_pa_term_sync cp; 6594 6595 memset(&cp, 0, sizeof(cp)); 6596 cp.handle = handle; 6597 6598 return hci_send_cmd(hdev, HCI_OP_LE_PA_TERM_SYNC, sizeof(cp), &cp); 6599} 6600 6601static void hci_le_pa_sync_estabilished_evt(struct hci_dev *hdev, void *data, 6602 struct sk_buff *skb) 6603{ 6604 struct hci_ev_le_pa_sync_established *ev = data; 6605 int mask = hdev->link_mode; 6606 __u8 flags = 0; 6607 struct hci_conn *pa_sync; 6608 6609 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 6610 6611 hci_dev_lock(hdev); 6612 6613 hci_dev_clear_flag(hdev, HCI_PA_SYNC); 6614 6615 mask |= hci_proto_connect_ind(hdev, &ev->bdaddr, ISO_LINK, &flags); 6616 if (!(mask & HCI_LM_ACCEPT)) { 6617 hci_le_pa_term_sync(hdev, ev->handle); 6618 goto unlock; 6619 } 6620 6621 if (!(flags & HCI_PROTO_DEFER)) 6622 goto unlock; 6623 6624 if (ev->status) { 6625 /* Add connection to indicate the failed PA sync event */ 6626 pa_sync = hci_conn_add_unset(hdev, ISO_LINK, BDADDR_ANY, 6627 HCI_ROLE_SLAVE); 6628 6629 if (!pa_sync) 6630 goto unlock; 6631 6632 set_bit(HCI_CONN_PA_SYNC_FAILED, &pa_sync->flags); 6633 6634 /* Notify iso layer */ 6635 hci_connect_cfm(pa_sync, ev->status); 6636 } 6637 6638unlock: 6639 hci_dev_unlock(hdev); 6640} 6641 6642static void hci_le_per_adv_report_evt(struct hci_dev *hdev, void *data, 6643 struct sk_buff *skb) 6644{ 6645 struct hci_ev_le_per_adv_report *ev = data; 6646 int mask = hdev->link_mode; 6647 __u8 flags = 0; 6648 6649 bt_dev_dbg(hdev, "sync_handle 0x%4.4x", le16_to_cpu(ev->sync_handle)); 6650 6651 hci_dev_lock(hdev); 6652 6653 mask |= hci_proto_connect_ind(hdev, BDADDR_ANY, ISO_LINK, &flags); 6654 if (!(mask & HCI_LM_ACCEPT)) 6655 hci_le_pa_term_sync(hdev, ev->sync_handle); 6656 6657 hci_dev_unlock(hdev); 6658} 6659 6660static void hci_le_remote_feat_complete_evt(struct hci_dev *hdev, void *data, 6661 struct sk_buff *skb) 6662{ 6663 struct hci_ev_le_remote_feat_complete *ev = data; 6664 struct hci_conn *conn; 6665 6666 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 6667 6668 hci_dev_lock(hdev); 6669 6670 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle)); 6671 if (conn) { 6672 if (!ev->status) 6673 memcpy(conn->features[0], ev->features, 8); 6674 6675 if (conn->state == BT_CONFIG) { 6676 __u8 status; 6677 6678 /* If the local controller supports peripheral-initiated 6679 * features exchange, but the remote controller does 6680 * not, then it is possible that the error code 0x1a 6681 * for unsupported remote feature gets returned. 6682 * 6683 * In this specific case, allow the connection to 6684 * transition into connected state and mark it as 6685 * successful. 6686 */ 6687 if (!conn->out && ev->status == 0x1a && 6688 (hdev->le_features[0] & HCI_LE_PERIPHERAL_FEATURES)) 6689 status = 0x00; 6690 else 6691 status = ev->status; 6692 6693 conn->state = BT_CONNECTED; 6694 hci_connect_cfm(conn, status); 6695 hci_conn_drop(conn); 6696 } 6697 } 6698 6699 hci_dev_unlock(hdev); 6700} 6701 6702static void hci_le_ltk_request_evt(struct hci_dev *hdev, void *data, 6703 struct sk_buff *skb) 6704{ 6705 struct hci_ev_le_ltk_req *ev = data; 6706 struct hci_cp_le_ltk_reply cp; 6707 struct hci_cp_le_ltk_neg_reply neg; 6708 struct hci_conn *conn; 6709 struct smp_ltk *ltk; 6710 6711 bt_dev_dbg(hdev, "handle 0x%4.4x", __le16_to_cpu(ev->handle)); 6712 6713 hci_dev_lock(hdev); 6714 6715 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle)); 6716 if (conn == NULL) 6717 goto not_found; 6718 6719 ltk = hci_find_ltk(hdev, &conn->dst, conn->dst_type, conn->role); 6720 if (!ltk) 6721 goto not_found; 6722 6723 if (smp_ltk_is_sc(ltk)) { 6724 /* With SC both EDiv and Rand are set to zero */ 6725 if (ev->ediv || ev->rand) 6726 goto not_found; 6727 } else { 6728 /* For non-SC keys check that EDiv and Rand match */ 6729 if (ev->ediv != ltk->ediv || ev->rand != ltk->rand) 6730 goto not_found; 6731 } 6732 6733 memcpy(cp.ltk, ltk->val, ltk->enc_size); 6734 memset(cp.ltk + ltk->enc_size, 0, sizeof(cp.ltk) - ltk->enc_size); 6735 cp.handle = cpu_to_le16(conn->handle); 6736 6737 conn->pending_sec_level = smp_ltk_sec_level(ltk); 6738 6739 conn->enc_key_size = ltk->enc_size; 6740 6741 hci_send_cmd(hdev, HCI_OP_LE_LTK_REPLY, sizeof(cp), &cp); 6742 6743 /* Ref. Bluetooth Core SPEC pages 1975 and 2004. STK is a 6744 * temporary key used to encrypt a connection following 6745 * pairing. It is used during the Encrypted Session Setup to 6746 * distribute the keys. Later, security can be re-established 6747 * using a distributed LTK. 6748 */ 6749 if (ltk->type == SMP_STK) { 6750 set_bit(HCI_CONN_STK_ENCRYPT, &conn->flags); 6751 list_del_rcu(<k->list); 6752 kfree_rcu(ltk, rcu); 6753 } else { 6754 clear_bit(HCI_CONN_STK_ENCRYPT, &conn->flags); 6755 } 6756 6757 hci_dev_unlock(hdev); 6758 6759 return; 6760 6761not_found: 6762 neg.handle = ev->handle; 6763 hci_send_cmd(hdev, HCI_OP_LE_LTK_NEG_REPLY, sizeof(neg), &neg); 6764 hci_dev_unlock(hdev); 6765} 6766 6767static void send_conn_param_neg_reply(struct hci_dev *hdev, u16 handle, 6768 u8 reason) 6769{ 6770 struct hci_cp_le_conn_param_req_neg_reply cp; 6771 6772 cp.handle = cpu_to_le16(handle); 6773 cp.reason = reason; 6774 6775 hci_send_cmd(hdev, HCI_OP_LE_CONN_PARAM_REQ_NEG_REPLY, sizeof(cp), 6776 &cp); 6777} 6778 6779static void hci_le_remote_conn_param_req_evt(struct hci_dev *hdev, void *data, 6780 struct sk_buff *skb) 6781{ 6782 struct hci_ev_le_remote_conn_param_req *ev = data; 6783 struct hci_cp_le_conn_param_req_reply cp; 6784 struct hci_conn *hcon; 6785 u16 handle, min, max, latency, timeout; 6786 6787 bt_dev_dbg(hdev, "handle 0x%4.4x", __le16_to_cpu(ev->handle)); 6788 6789 handle = le16_to_cpu(ev->handle); 6790 min = le16_to_cpu(ev->interval_min); 6791 max = le16_to_cpu(ev->interval_max); 6792 latency = le16_to_cpu(ev->latency); 6793 timeout = le16_to_cpu(ev->timeout); 6794 6795 hcon = hci_conn_hash_lookup_handle(hdev, handle); 6796 if (!hcon || hcon->state != BT_CONNECTED) 6797 return send_conn_param_neg_reply(hdev, handle, 6798 HCI_ERROR_UNKNOWN_CONN_ID); 6799 6800 if (max > hcon->le_conn_max_interval) 6801 return send_conn_param_neg_reply(hdev, handle, 6802 HCI_ERROR_INVALID_LL_PARAMS); 6803 6804 if (hci_check_conn_params(min, max, latency, timeout)) 6805 return send_conn_param_neg_reply(hdev, handle, 6806 HCI_ERROR_INVALID_LL_PARAMS); 6807 6808 if (hcon->role == HCI_ROLE_MASTER) { 6809 struct hci_conn_params *params; 6810 u8 store_hint; 6811 6812 hci_dev_lock(hdev); 6813 6814 params = hci_conn_params_lookup(hdev, &hcon->dst, 6815 hcon->dst_type); 6816 if (params) { 6817 params->conn_min_interval = min; 6818 params->conn_max_interval = max; 6819 params->conn_latency = latency; 6820 params->supervision_timeout = timeout; 6821 store_hint = 0x01; 6822 } else { 6823 store_hint = 0x00; 6824 } 6825 6826 hci_dev_unlock(hdev); 6827 6828 mgmt_new_conn_param(hdev, &hcon->dst, hcon->dst_type, 6829 store_hint, min, max, latency, timeout); 6830 } 6831 6832 cp.handle = ev->handle; 6833 cp.interval_min = ev->interval_min; 6834 cp.interval_max = ev->interval_max; 6835 cp.latency = ev->latency; 6836 cp.timeout = ev->timeout; 6837 cp.min_ce_len = 0; 6838 cp.max_ce_len = 0; 6839 6840 hci_send_cmd(hdev, HCI_OP_LE_CONN_PARAM_REQ_REPLY, sizeof(cp), &cp); 6841} 6842 6843static void hci_le_direct_adv_report_evt(struct hci_dev *hdev, void *data, 6844 struct sk_buff *skb) 6845{ 6846 struct hci_ev_le_direct_adv_report *ev = data; 6847 u64 instant = jiffies; 6848 int i; 6849 6850 if (!hci_le_ev_skb_pull(hdev, skb, HCI_EV_LE_DIRECT_ADV_REPORT, 6851 flex_array_size(ev, info, ev->num))) 6852 return; 6853 6854 if (!ev->num) 6855 return; 6856 6857 hci_dev_lock(hdev); 6858 6859 for (i = 0; i < ev->num; i++) { 6860 struct hci_ev_le_direct_adv_info *info = &ev->info[i]; 6861 6862 process_adv_report(hdev, info->type, &info->bdaddr, 6863 info->bdaddr_type, &info->direct_addr, 6864 info->direct_addr_type, info->rssi, NULL, 0, 6865 false, false, instant); 6866 } 6867 6868 hci_dev_unlock(hdev); 6869} 6870 6871static void hci_le_phy_update_evt(struct hci_dev *hdev, void *data, 6872 struct sk_buff *skb) 6873{ 6874 struct hci_ev_le_phy_update_complete *ev = data; 6875 struct hci_conn *conn; 6876 6877 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 6878 6879 if (ev->status) 6880 return; 6881 6882 hci_dev_lock(hdev); 6883 6884 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle)); 6885 if (!conn) 6886 goto unlock; 6887 6888 conn->le_tx_phy = ev->tx_phy; 6889 conn->le_rx_phy = ev->rx_phy; 6890 6891unlock: 6892 hci_dev_unlock(hdev); 6893} 6894 6895static void hci_le_cis_estabilished_evt(struct hci_dev *hdev, void *data, 6896 struct sk_buff *skb) 6897{ 6898 struct hci_evt_le_cis_established *ev = data; 6899 struct hci_conn *conn; 6900 struct bt_iso_qos *qos; 6901 bool pending = false; 6902 u16 handle = __le16_to_cpu(ev->handle); 6903 6904 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 6905 6906 hci_dev_lock(hdev); 6907 6908 conn = hci_conn_hash_lookup_handle(hdev, handle); 6909 if (!conn) { 6910 bt_dev_err(hdev, 6911 "Unable to find connection with handle 0x%4.4x", 6912 handle); 6913 goto unlock; 6914 } 6915 6916 if (conn->type != ISO_LINK) { 6917 bt_dev_err(hdev, 6918 "Invalid connection link type handle 0x%4.4x", 6919 handle); 6920 goto unlock; 6921 } 6922 6923 qos = &conn->iso_qos; 6924 6925 pending = test_and_clear_bit(HCI_CONN_CREATE_CIS, &conn->flags); 6926 6927 /* Convert ISO Interval (1.25 ms slots) to SDU Interval (us) */ 6928 qos->ucast.in.interval = le16_to_cpu(ev->interval) * 1250; 6929 qos->ucast.out.interval = qos->ucast.in.interval; 6930 6931 switch (conn->role) { 6932 case HCI_ROLE_SLAVE: 6933 /* Convert Transport Latency (us) to Latency (msec) */ 6934 qos->ucast.in.latency = 6935 DIV_ROUND_CLOSEST(get_unaligned_le24(ev->c_latency), 6936 1000); 6937 qos->ucast.out.latency = 6938 DIV_ROUND_CLOSEST(get_unaligned_le24(ev->p_latency), 6939 1000); 6940 qos->ucast.in.sdu = le16_to_cpu(ev->c_mtu); 6941 qos->ucast.out.sdu = le16_to_cpu(ev->p_mtu); 6942 qos->ucast.in.phy = ev->c_phy; 6943 qos->ucast.out.phy = ev->p_phy; 6944 break; 6945 case HCI_ROLE_MASTER: 6946 /* Convert Transport Latency (us) to Latency (msec) */ 6947 qos->ucast.out.latency = 6948 DIV_ROUND_CLOSEST(get_unaligned_le24(ev->c_latency), 6949 1000); 6950 qos->ucast.in.latency = 6951 DIV_ROUND_CLOSEST(get_unaligned_le24(ev->p_latency), 6952 1000); 6953 qos->ucast.out.sdu = le16_to_cpu(ev->c_mtu); 6954 qos->ucast.in.sdu = le16_to_cpu(ev->p_mtu); 6955 qos->ucast.out.phy = ev->c_phy; 6956 qos->ucast.in.phy = ev->p_phy; 6957 break; 6958 } 6959 6960 if (!ev->status) { 6961 conn->state = BT_CONNECTED; 6962 hci_debugfs_create_conn(conn); 6963 hci_conn_add_sysfs(conn); 6964 hci_iso_setup_path(conn); 6965 goto unlock; 6966 } 6967 6968 conn->state = BT_CLOSED; 6969 hci_connect_cfm(conn, ev->status); 6970 hci_conn_del(conn); 6971 6972unlock: 6973 if (pending) 6974 hci_le_create_cis_pending(hdev); 6975 6976 hci_dev_unlock(hdev); 6977} 6978 6979static void hci_le_reject_cis(struct hci_dev *hdev, __le16 handle) 6980{ 6981 struct hci_cp_le_reject_cis cp; 6982 6983 memset(&cp, 0, sizeof(cp)); 6984 cp.handle = handle; 6985 cp.reason = HCI_ERROR_REJ_BAD_ADDR; 6986 hci_send_cmd(hdev, HCI_OP_LE_REJECT_CIS, sizeof(cp), &cp); 6987} 6988 6989static void hci_le_accept_cis(struct hci_dev *hdev, __le16 handle) 6990{ 6991 struct hci_cp_le_accept_cis cp; 6992 6993 memset(&cp, 0, sizeof(cp)); 6994 cp.handle = handle; 6995 hci_send_cmd(hdev, HCI_OP_LE_ACCEPT_CIS, sizeof(cp), &cp); 6996} 6997 6998static void hci_le_cis_req_evt(struct hci_dev *hdev, void *data, 6999 struct sk_buff *skb) 7000{ 7001 struct hci_evt_le_cis_req *ev = data; 7002 u16 acl_handle, cis_handle; 7003 struct hci_conn *acl, *cis; 7004 int mask; 7005 __u8 flags = 0; 7006 7007 acl_handle = __le16_to_cpu(ev->acl_handle); 7008 cis_handle = __le16_to_cpu(ev->cis_handle); 7009 7010 bt_dev_dbg(hdev, "acl 0x%4.4x handle 0x%4.4x cig 0x%2.2x cis 0x%2.2x", 7011 acl_handle, cis_handle, ev->cig_id, ev->cis_id); 7012 7013 hci_dev_lock(hdev); 7014 7015 acl = hci_conn_hash_lookup_handle(hdev, acl_handle); 7016 if (!acl) 7017 goto unlock; 7018 7019 mask = hci_proto_connect_ind(hdev, &acl->dst, ISO_LINK, &flags); 7020 if (!(mask & HCI_LM_ACCEPT)) { 7021 hci_le_reject_cis(hdev, ev->cis_handle); 7022 goto unlock; 7023 } 7024 7025 cis = hci_conn_hash_lookup_handle(hdev, cis_handle); 7026 if (!cis) { 7027 cis = hci_conn_add(hdev, ISO_LINK, &acl->dst, HCI_ROLE_SLAVE, 7028 cis_handle); 7029 if (!cis) { 7030 hci_le_reject_cis(hdev, ev->cis_handle); 7031 goto unlock; 7032 } 7033 } 7034 7035 cis->iso_qos.ucast.cig = ev->cig_id; 7036 cis->iso_qos.ucast.cis = ev->cis_id; 7037 7038 if (!(flags & HCI_PROTO_DEFER)) { 7039 hci_le_accept_cis(hdev, ev->cis_handle); 7040 } else { 7041 cis->state = BT_CONNECT2; 7042 hci_connect_cfm(cis, 0); 7043 } 7044 7045unlock: 7046 hci_dev_unlock(hdev); 7047} 7048 7049static int hci_iso_term_big_sync(struct hci_dev *hdev, void *data) 7050{ 7051 u8 handle = PTR_UINT(data); 7052 7053 return hci_le_terminate_big_sync(hdev, handle, 7054 HCI_ERROR_LOCAL_HOST_TERM); 7055} 7056 7057static void hci_le_create_big_complete_evt(struct hci_dev *hdev, void *data, 7058 struct sk_buff *skb) 7059{ 7060 struct hci_evt_le_create_big_complete *ev = data; 7061 struct hci_conn *conn; 7062 __u8 i = 0; 7063 7064 BT_DBG("%s status 0x%2.2x", hdev->name, ev->status); 7065 7066 if (!hci_le_ev_skb_pull(hdev, skb, HCI_EVT_LE_CREATE_BIG_COMPLETE, 7067 flex_array_size(ev, bis_handle, ev->num_bis))) 7068 return; 7069 7070 hci_dev_lock(hdev); 7071 rcu_read_lock(); 7072 7073 /* Connect all BISes that are bound to the BIG */ 7074 list_for_each_entry_rcu(conn, &hdev->conn_hash.list, list) { 7075 if (bacmp(&conn->dst, BDADDR_ANY) || 7076 conn->type != ISO_LINK || 7077 conn->iso_qos.bcast.big != ev->handle) 7078 continue; 7079 7080 if (hci_conn_set_handle(conn, 7081 __le16_to_cpu(ev->bis_handle[i++]))) 7082 continue; 7083 7084 if (!ev->status) { 7085 conn->state = BT_CONNECTED; 7086 set_bit(HCI_CONN_BIG_CREATED, &conn->flags); 7087 rcu_read_unlock(); 7088 hci_debugfs_create_conn(conn); 7089 hci_conn_add_sysfs(conn); 7090 hci_iso_setup_path(conn); 7091 rcu_read_lock(); 7092 continue; 7093 } 7094 7095 hci_connect_cfm(conn, ev->status); 7096 rcu_read_unlock(); 7097 hci_conn_del(conn); 7098 rcu_read_lock(); 7099 } 7100 7101 rcu_read_unlock(); 7102 7103 if (!ev->status && !i) 7104 /* If no BISes have been connected for the BIG, 7105 * terminate. This is in case all bound connections 7106 * have been closed before the BIG creation 7107 * has completed. 7108 */ 7109 hci_cmd_sync_queue(hdev, hci_iso_term_big_sync, 7110 UINT_PTR(ev->handle), NULL); 7111 7112 hci_dev_unlock(hdev); 7113} 7114 7115static void hci_le_big_sync_established_evt(struct hci_dev *hdev, void *data, 7116 struct sk_buff *skb) 7117{ 7118 struct hci_evt_le_big_sync_estabilished *ev = data; 7119 struct hci_conn *bis; 7120 struct hci_conn *pa_sync; 7121 int i; 7122 7123 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 7124 7125 if (!hci_le_ev_skb_pull(hdev, skb, HCI_EVT_LE_BIG_SYNC_ESTABILISHED, 7126 flex_array_size(ev, bis, ev->num_bis))) 7127 return; 7128 7129 hci_dev_lock(hdev); 7130 7131 if (!ev->status) { 7132 pa_sync = hci_conn_hash_lookup_pa_sync_big_handle(hdev, ev->handle); 7133 if (pa_sync) 7134 /* Also mark the BIG sync established event on the 7135 * associated PA sync hcon 7136 */ 7137 set_bit(HCI_CONN_BIG_SYNC, &pa_sync->flags); 7138 } 7139 7140 for (i = 0; i < ev->num_bis; i++) { 7141 u16 handle = le16_to_cpu(ev->bis[i]); 7142 __le32 interval; 7143 7144 bis = hci_conn_hash_lookup_handle(hdev, handle); 7145 if (!bis) { 7146 bis = hci_conn_add(hdev, ISO_LINK, BDADDR_ANY, 7147 HCI_ROLE_SLAVE, handle); 7148 if (!bis) 7149 continue; 7150 } 7151 7152 if (ev->status != 0x42) 7153 /* Mark PA sync as established */ 7154 set_bit(HCI_CONN_PA_SYNC, &bis->flags); 7155 7156 bis->iso_qos.bcast.big = ev->handle; 7157 memset(&interval, 0, sizeof(interval)); 7158 memcpy(&interval, ev->latency, sizeof(ev->latency)); 7159 bis->iso_qos.bcast.in.interval = le32_to_cpu(interval); 7160 /* Convert ISO Interval (1.25 ms slots) to latency (ms) */ 7161 bis->iso_qos.bcast.in.latency = le16_to_cpu(ev->interval) * 125 / 100; 7162 bis->iso_qos.bcast.in.sdu = le16_to_cpu(ev->max_pdu); 7163 7164 if (!ev->status) { 7165 set_bit(HCI_CONN_BIG_SYNC, &bis->flags); 7166 hci_iso_setup_path(bis); 7167 } 7168 } 7169 7170 /* In case BIG sync failed, notify each failed connection to 7171 * the user after all hci connections have been added 7172 */ 7173 if (ev->status) 7174 for (i = 0; i < ev->num_bis; i++) { 7175 u16 handle = le16_to_cpu(ev->bis[i]); 7176 7177 bis = hci_conn_hash_lookup_handle(hdev, handle); 7178 7179 set_bit(HCI_CONN_BIG_SYNC_FAILED, &bis->flags); 7180 hci_connect_cfm(bis, ev->status); 7181 } 7182 7183 hci_dev_unlock(hdev); 7184} 7185 7186static void hci_le_big_info_adv_report_evt(struct hci_dev *hdev, void *data, 7187 struct sk_buff *skb) 7188{ 7189 struct hci_evt_le_big_info_adv_report *ev = data; 7190 int mask = hdev->link_mode; 7191 __u8 flags = 0; 7192 struct hci_conn *pa_sync; 7193 7194 bt_dev_dbg(hdev, "sync_handle 0x%4.4x", le16_to_cpu(ev->sync_handle)); 7195 7196 hci_dev_lock(hdev); 7197 7198 mask |= hci_proto_connect_ind(hdev, BDADDR_ANY, ISO_LINK, &flags); 7199 if (!(mask & HCI_LM_ACCEPT)) { 7200 hci_le_pa_term_sync(hdev, ev->sync_handle); 7201 goto unlock; 7202 } 7203 7204 if (!(flags & HCI_PROTO_DEFER)) 7205 goto unlock; 7206 7207 pa_sync = hci_conn_hash_lookup_pa_sync_handle 7208 (hdev, 7209 le16_to_cpu(ev->sync_handle)); 7210 7211 if (pa_sync) 7212 goto unlock; 7213 7214 /* Add connection to indicate the PA sync event */ 7215 pa_sync = hci_conn_add_unset(hdev, ISO_LINK, BDADDR_ANY, 7216 HCI_ROLE_SLAVE); 7217 7218 if (!pa_sync) 7219 goto unlock; 7220 7221 pa_sync->sync_handle = le16_to_cpu(ev->sync_handle); 7222 set_bit(HCI_CONN_PA_SYNC, &pa_sync->flags); 7223 7224 /* Notify iso layer */ 7225 hci_connect_cfm(pa_sync, 0x00); 7226 7227 /* Notify MGMT layer */ 7228 mgmt_device_connected(hdev, pa_sync, NULL, 0); 7229 7230unlock: 7231 hci_dev_unlock(hdev); 7232} 7233 7234#define HCI_LE_EV_VL(_op, _func, _min_len, _max_len) \ 7235[_op] = { \ 7236 .func = _func, \ 7237 .min_len = _min_len, \ 7238 .max_len = _max_len, \ 7239} 7240 7241#define HCI_LE_EV(_op, _func, _len) \ 7242 HCI_LE_EV_VL(_op, _func, _len, _len) 7243 7244#define HCI_LE_EV_STATUS(_op, _func) \ 7245 HCI_LE_EV(_op, _func, sizeof(struct hci_ev_status)) 7246 7247/* Entries in this table shall have their position according to the subevent 7248 * opcode they handle so the use of the macros above is recommend since it does 7249 * attempt to initialize at its proper index using Designated Initializers that 7250 * way events without a callback function can be ommited. 7251 */ 7252static const struct hci_le_ev { 7253 void (*func)(struct hci_dev *hdev, void *data, struct sk_buff *skb); 7254 u16 min_len; 7255 u16 max_len; 7256} hci_le_ev_table[U8_MAX + 1] = { 7257 /* [0x01 = HCI_EV_LE_CONN_COMPLETE] */ 7258 HCI_LE_EV(HCI_EV_LE_CONN_COMPLETE, hci_le_conn_complete_evt, 7259 sizeof(struct hci_ev_le_conn_complete)), 7260 /* [0x02 = HCI_EV_LE_ADVERTISING_REPORT] */ 7261 HCI_LE_EV_VL(HCI_EV_LE_ADVERTISING_REPORT, hci_le_adv_report_evt, 7262 sizeof(struct hci_ev_le_advertising_report), 7263 HCI_MAX_EVENT_SIZE), 7264 /* [0x03 = HCI_EV_LE_CONN_UPDATE_COMPLETE] */ 7265 HCI_LE_EV(HCI_EV_LE_CONN_UPDATE_COMPLETE, 7266 hci_le_conn_update_complete_evt, 7267 sizeof(struct hci_ev_le_conn_update_complete)), 7268 /* [0x04 = HCI_EV_LE_REMOTE_FEAT_COMPLETE] */ 7269 HCI_LE_EV(HCI_EV_LE_REMOTE_FEAT_COMPLETE, 7270 hci_le_remote_feat_complete_evt, 7271 sizeof(struct hci_ev_le_remote_feat_complete)), 7272 /* [0x05 = HCI_EV_LE_LTK_REQ] */ 7273 HCI_LE_EV(HCI_EV_LE_LTK_REQ, hci_le_ltk_request_evt, 7274 sizeof(struct hci_ev_le_ltk_req)), 7275 /* [0x06 = HCI_EV_LE_REMOTE_CONN_PARAM_REQ] */ 7276 HCI_LE_EV(HCI_EV_LE_REMOTE_CONN_PARAM_REQ, 7277 hci_le_remote_conn_param_req_evt, 7278 sizeof(struct hci_ev_le_remote_conn_param_req)), 7279 /* [0x0a = HCI_EV_LE_ENHANCED_CONN_COMPLETE] */ 7280 HCI_LE_EV(HCI_EV_LE_ENHANCED_CONN_COMPLETE, 7281 hci_le_enh_conn_complete_evt, 7282 sizeof(struct hci_ev_le_enh_conn_complete)), 7283 /* [0x0b = HCI_EV_LE_DIRECT_ADV_REPORT] */ 7284 HCI_LE_EV_VL(HCI_EV_LE_DIRECT_ADV_REPORT, hci_le_direct_adv_report_evt, 7285 sizeof(struct hci_ev_le_direct_adv_report), 7286 HCI_MAX_EVENT_SIZE), 7287 /* [0x0c = HCI_EV_LE_PHY_UPDATE_COMPLETE] */ 7288 HCI_LE_EV(HCI_EV_LE_PHY_UPDATE_COMPLETE, hci_le_phy_update_evt, 7289 sizeof(struct hci_ev_le_phy_update_complete)), 7290 /* [0x0d = HCI_EV_LE_EXT_ADV_REPORT] */ 7291 HCI_LE_EV_VL(HCI_EV_LE_EXT_ADV_REPORT, hci_le_ext_adv_report_evt, 7292 sizeof(struct hci_ev_le_ext_adv_report), 7293 HCI_MAX_EVENT_SIZE), 7294 /* [0x0e = HCI_EV_LE_PA_SYNC_ESTABLISHED] */ 7295 HCI_LE_EV(HCI_EV_LE_PA_SYNC_ESTABLISHED, 7296 hci_le_pa_sync_estabilished_evt, 7297 sizeof(struct hci_ev_le_pa_sync_established)), 7298 /* [0x0f = HCI_EV_LE_PER_ADV_REPORT] */ 7299 HCI_LE_EV_VL(HCI_EV_LE_PER_ADV_REPORT, 7300 hci_le_per_adv_report_evt, 7301 sizeof(struct hci_ev_le_per_adv_report), 7302 HCI_MAX_EVENT_SIZE), 7303 /* [0x12 = HCI_EV_LE_EXT_ADV_SET_TERM] */ 7304 HCI_LE_EV(HCI_EV_LE_EXT_ADV_SET_TERM, hci_le_ext_adv_term_evt, 7305 sizeof(struct hci_evt_le_ext_adv_set_term)), 7306 /* [0x19 = HCI_EVT_LE_CIS_ESTABLISHED] */ 7307 HCI_LE_EV(HCI_EVT_LE_CIS_ESTABLISHED, hci_le_cis_estabilished_evt, 7308 sizeof(struct hci_evt_le_cis_established)), 7309 /* [0x1a = HCI_EVT_LE_CIS_REQ] */ 7310 HCI_LE_EV(HCI_EVT_LE_CIS_REQ, hci_le_cis_req_evt, 7311 sizeof(struct hci_evt_le_cis_req)), 7312 /* [0x1b = HCI_EVT_LE_CREATE_BIG_COMPLETE] */ 7313 HCI_LE_EV_VL(HCI_EVT_LE_CREATE_BIG_COMPLETE, 7314 hci_le_create_big_complete_evt, 7315 sizeof(struct hci_evt_le_create_big_complete), 7316 HCI_MAX_EVENT_SIZE), 7317 /* [0x1d = HCI_EV_LE_BIG_SYNC_ESTABILISHED] */ 7318 HCI_LE_EV_VL(HCI_EVT_LE_BIG_SYNC_ESTABILISHED, 7319 hci_le_big_sync_established_evt, 7320 sizeof(struct hci_evt_le_big_sync_estabilished), 7321 HCI_MAX_EVENT_SIZE), 7322 /* [0x22 = HCI_EVT_LE_BIG_INFO_ADV_REPORT] */ 7323 HCI_LE_EV_VL(HCI_EVT_LE_BIG_INFO_ADV_REPORT, 7324 hci_le_big_info_adv_report_evt, 7325 sizeof(struct hci_evt_le_big_info_adv_report), 7326 HCI_MAX_EVENT_SIZE), 7327}; 7328 7329static void hci_le_meta_evt(struct hci_dev *hdev, void *data, 7330 struct sk_buff *skb, u16 *opcode, u8 *status, 7331 hci_req_complete_t *req_complete, 7332 hci_req_complete_skb_t *req_complete_skb) 7333{ 7334 struct hci_ev_le_meta *ev = data; 7335 const struct hci_le_ev *subev; 7336 7337 bt_dev_dbg(hdev, "subevent 0x%2.2x", ev->subevent); 7338 7339 /* Only match event if command OGF is for LE */ 7340 if (hdev->req_skb && 7341 hci_opcode_ogf(hci_skb_opcode(hdev->req_skb)) == 0x08 && 7342 hci_skb_event(hdev->req_skb) == ev->subevent) { 7343 *opcode = hci_skb_opcode(hdev->req_skb); 7344 hci_req_cmd_complete(hdev, *opcode, 0x00, req_complete, 7345 req_complete_skb); 7346 } 7347 7348 subev = &hci_le_ev_table[ev->subevent]; 7349 if (!subev->func) 7350 return; 7351 7352 if (skb->len < subev->min_len) { 7353 bt_dev_err(hdev, "unexpected subevent 0x%2.2x length: %u < %u", 7354 ev->subevent, skb->len, subev->min_len); 7355 return; 7356 } 7357 7358 /* Just warn if the length is over max_len size it still be 7359 * possible to partially parse the event so leave to callback to 7360 * decide if that is acceptable. 7361 */ 7362 if (skb->len > subev->max_len) 7363 bt_dev_warn(hdev, "unexpected subevent 0x%2.2x length: %u > %u", 7364 ev->subevent, skb->len, subev->max_len); 7365 data = hci_le_ev_skb_pull(hdev, skb, ev->subevent, subev->min_len); 7366 if (!data) 7367 return; 7368 7369 subev->func(hdev, data, skb); 7370} 7371 7372static bool hci_get_cmd_complete(struct hci_dev *hdev, u16 opcode, 7373 u8 event, struct sk_buff *skb) 7374{ 7375 struct hci_ev_cmd_complete *ev; 7376 struct hci_event_hdr *hdr; 7377 7378 if (!skb) 7379 return false; 7380 7381 hdr = hci_ev_skb_pull(hdev, skb, event, sizeof(*hdr)); 7382 if (!hdr) 7383 return false; 7384 7385 if (event) { 7386 if (hdr->evt != event) 7387 return false; 7388 return true; 7389 } 7390 7391 /* Check if request ended in Command Status - no way to retrieve 7392 * any extra parameters in this case. 7393 */ 7394 if (hdr->evt == HCI_EV_CMD_STATUS) 7395 return false; 7396 7397 if (hdr->evt != HCI_EV_CMD_COMPLETE) { 7398 bt_dev_err(hdev, "last event is not cmd complete (0x%2.2x)", 7399 hdr->evt); 7400 return false; 7401 } 7402 7403 ev = hci_cc_skb_pull(hdev, skb, opcode, sizeof(*ev)); 7404 if (!ev) 7405 return false; 7406 7407 if (opcode != __le16_to_cpu(ev->opcode)) { 7408 BT_DBG("opcode doesn't match (0x%2.2x != 0x%2.2x)", opcode, 7409 __le16_to_cpu(ev->opcode)); 7410 return false; 7411 } 7412 7413 return true; 7414} 7415 7416static void hci_store_wake_reason(struct hci_dev *hdev, u8 event, 7417 struct sk_buff *skb) 7418{ 7419 struct hci_ev_le_advertising_info *adv; 7420 struct hci_ev_le_direct_adv_info *direct_adv; 7421 struct hci_ev_le_ext_adv_info *ext_adv; 7422 const struct hci_ev_conn_complete *conn_complete = (void *)skb->data; 7423 const struct hci_ev_conn_request *conn_request = (void *)skb->data; 7424 7425 hci_dev_lock(hdev); 7426 7427 /* If we are currently suspended and this is the first BT event seen, 7428 * save the wake reason associated with the event. 7429 */ 7430 if (!hdev->suspended || hdev->wake_reason) 7431 goto unlock; 7432 7433 /* Default to remote wake. Values for wake_reason are documented in the 7434 * Bluez mgmt api docs. 7435 */ 7436 hdev->wake_reason = MGMT_WAKE_REASON_REMOTE_WAKE; 7437 7438 /* Once configured for remote wakeup, we should only wake up for 7439 * reconnections. It's useful to see which device is waking us up so 7440 * keep track of the bdaddr of the connection event that woke us up. 7441 */ 7442 if (event == HCI_EV_CONN_REQUEST) { 7443 bacpy(&hdev->wake_addr, &conn_request->bdaddr); 7444 hdev->wake_addr_type = BDADDR_BREDR; 7445 } else if (event == HCI_EV_CONN_COMPLETE) { 7446 bacpy(&hdev->wake_addr, &conn_complete->bdaddr); 7447 hdev->wake_addr_type = BDADDR_BREDR; 7448 } else if (event == HCI_EV_LE_META) { 7449 struct hci_ev_le_meta *le_ev = (void *)skb->data; 7450 u8 subevent = le_ev->subevent; 7451 u8 *ptr = &skb->data[sizeof(*le_ev)]; 7452 u8 num_reports = *ptr; 7453 7454 if ((subevent == HCI_EV_LE_ADVERTISING_REPORT || 7455 subevent == HCI_EV_LE_DIRECT_ADV_REPORT || 7456 subevent == HCI_EV_LE_EXT_ADV_REPORT) && 7457 num_reports) { 7458 adv = (void *)(ptr + 1); 7459 direct_adv = (void *)(ptr + 1); 7460 ext_adv = (void *)(ptr + 1); 7461 7462 switch (subevent) { 7463 case HCI_EV_LE_ADVERTISING_REPORT: 7464 bacpy(&hdev->wake_addr, &adv->bdaddr); 7465 hdev->wake_addr_type = adv->bdaddr_type; 7466 break; 7467 case HCI_EV_LE_DIRECT_ADV_REPORT: 7468 bacpy(&hdev->wake_addr, &direct_adv->bdaddr); 7469 hdev->wake_addr_type = direct_adv->bdaddr_type; 7470 break; 7471 case HCI_EV_LE_EXT_ADV_REPORT: 7472 bacpy(&hdev->wake_addr, &ext_adv->bdaddr); 7473 hdev->wake_addr_type = ext_adv->bdaddr_type; 7474 break; 7475 } 7476 } 7477 } else { 7478 hdev->wake_reason = MGMT_WAKE_REASON_UNEXPECTED; 7479 } 7480 7481unlock: 7482 hci_dev_unlock(hdev); 7483} 7484 7485#define HCI_EV_VL(_op, _func, _min_len, _max_len) \ 7486[_op] = { \ 7487 .req = false, \ 7488 .func = _func, \ 7489 .min_len = _min_len, \ 7490 .max_len = _max_len, \ 7491} 7492 7493#define HCI_EV(_op, _func, _len) \ 7494 HCI_EV_VL(_op, _func, _len, _len) 7495 7496#define HCI_EV_STATUS(_op, _func) \ 7497 HCI_EV(_op, _func, sizeof(struct hci_ev_status)) 7498 7499#define HCI_EV_REQ_VL(_op, _func, _min_len, _max_len) \ 7500[_op] = { \ 7501 .req = true, \ 7502 .func_req = _func, \ 7503 .min_len = _min_len, \ 7504 .max_len = _max_len, \ 7505} 7506 7507#define HCI_EV_REQ(_op, _func, _len) \ 7508 HCI_EV_REQ_VL(_op, _func, _len, _len) 7509 7510/* Entries in this table shall have their position according to the event opcode 7511 * they handle so the use of the macros above is recommend since it does attempt 7512 * to initialize at its proper index using Designated Initializers that way 7513 * events without a callback function don't have entered. 7514 */ 7515static const struct hci_ev { 7516 bool req; 7517 union { 7518 void (*func)(struct hci_dev *hdev, void *data, 7519 struct sk_buff *skb); 7520 void (*func_req)(struct hci_dev *hdev, void *data, 7521 struct sk_buff *skb, u16 *opcode, u8 *status, 7522 hci_req_complete_t *req_complete, 7523 hci_req_complete_skb_t *req_complete_skb); 7524 }; 7525 u16 min_len; 7526 u16 max_len; 7527} hci_ev_table[U8_MAX + 1] = { 7528 /* [0x01 = HCI_EV_INQUIRY_COMPLETE] */ 7529 HCI_EV_STATUS(HCI_EV_INQUIRY_COMPLETE, hci_inquiry_complete_evt), 7530 /* [0x02 = HCI_EV_INQUIRY_RESULT] */ 7531 HCI_EV_VL(HCI_EV_INQUIRY_RESULT, hci_inquiry_result_evt, 7532 sizeof(struct hci_ev_inquiry_result), HCI_MAX_EVENT_SIZE), 7533 /* [0x03 = HCI_EV_CONN_COMPLETE] */ 7534 HCI_EV(HCI_EV_CONN_COMPLETE, hci_conn_complete_evt, 7535 sizeof(struct hci_ev_conn_complete)), 7536 /* [0x04 = HCI_EV_CONN_REQUEST] */ 7537 HCI_EV(HCI_EV_CONN_REQUEST, hci_conn_request_evt, 7538 sizeof(struct hci_ev_conn_request)), 7539 /* [0x05 = HCI_EV_DISCONN_COMPLETE] */ 7540 HCI_EV(HCI_EV_DISCONN_COMPLETE, hci_disconn_complete_evt, 7541 sizeof(struct hci_ev_disconn_complete)), 7542 /* [0x06 = HCI_EV_AUTH_COMPLETE] */ 7543 HCI_EV(HCI_EV_AUTH_COMPLETE, hci_auth_complete_evt, 7544 sizeof(struct hci_ev_auth_complete)), 7545 /* [0x07 = HCI_EV_REMOTE_NAME] */ 7546 HCI_EV(HCI_EV_REMOTE_NAME, hci_remote_name_evt, 7547 sizeof(struct hci_ev_remote_name)), 7548 /* [0x08 = HCI_EV_ENCRYPT_CHANGE] */ 7549 HCI_EV(HCI_EV_ENCRYPT_CHANGE, hci_encrypt_change_evt, 7550 sizeof(struct hci_ev_encrypt_change)), 7551 /* [0x09 = HCI_EV_CHANGE_LINK_KEY_COMPLETE] */ 7552 HCI_EV(HCI_EV_CHANGE_LINK_KEY_COMPLETE, 7553 hci_change_link_key_complete_evt, 7554 sizeof(struct hci_ev_change_link_key_complete)), 7555 /* [0x0b = HCI_EV_REMOTE_FEATURES] */ 7556 HCI_EV(HCI_EV_REMOTE_FEATURES, hci_remote_features_evt, 7557 sizeof(struct hci_ev_remote_features)), 7558 /* [0x0e = HCI_EV_CMD_COMPLETE] */ 7559 HCI_EV_REQ_VL(HCI_EV_CMD_COMPLETE, hci_cmd_complete_evt, 7560 sizeof(struct hci_ev_cmd_complete), HCI_MAX_EVENT_SIZE), 7561 /* [0x0f = HCI_EV_CMD_STATUS] */ 7562 HCI_EV_REQ(HCI_EV_CMD_STATUS, hci_cmd_status_evt, 7563 sizeof(struct hci_ev_cmd_status)), 7564 /* [0x10 = HCI_EV_CMD_STATUS] */ 7565 HCI_EV(HCI_EV_HARDWARE_ERROR, hci_hardware_error_evt, 7566 sizeof(struct hci_ev_hardware_error)), 7567 /* [0x12 = HCI_EV_ROLE_CHANGE] */ 7568 HCI_EV(HCI_EV_ROLE_CHANGE, hci_role_change_evt, 7569 sizeof(struct hci_ev_role_change)), 7570 /* [0x13 = HCI_EV_NUM_COMP_PKTS] */ 7571 HCI_EV_VL(HCI_EV_NUM_COMP_PKTS, hci_num_comp_pkts_evt, 7572 sizeof(struct hci_ev_num_comp_pkts), HCI_MAX_EVENT_SIZE), 7573 /* [0x14 = HCI_EV_MODE_CHANGE] */ 7574 HCI_EV(HCI_EV_MODE_CHANGE, hci_mode_change_evt, 7575 sizeof(struct hci_ev_mode_change)), 7576 /* [0x16 = HCI_EV_PIN_CODE_REQ] */ 7577 HCI_EV(HCI_EV_PIN_CODE_REQ, hci_pin_code_request_evt, 7578 sizeof(struct hci_ev_pin_code_req)), 7579 /* [0x17 = HCI_EV_LINK_KEY_REQ] */ 7580 HCI_EV(HCI_EV_LINK_KEY_REQ, hci_link_key_request_evt, 7581 sizeof(struct hci_ev_link_key_req)), 7582 /* [0x18 = HCI_EV_LINK_KEY_NOTIFY] */ 7583 HCI_EV(HCI_EV_LINK_KEY_NOTIFY, hci_link_key_notify_evt, 7584 sizeof(struct hci_ev_link_key_notify)), 7585 /* [0x1c = HCI_EV_CLOCK_OFFSET] */ 7586 HCI_EV(HCI_EV_CLOCK_OFFSET, hci_clock_offset_evt, 7587 sizeof(struct hci_ev_clock_offset)), 7588 /* [0x1d = HCI_EV_PKT_TYPE_CHANGE] */ 7589 HCI_EV(HCI_EV_PKT_TYPE_CHANGE, hci_pkt_type_change_evt, 7590 sizeof(struct hci_ev_pkt_type_change)), 7591 /* [0x20 = HCI_EV_PSCAN_REP_MODE] */ 7592 HCI_EV(HCI_EV_PSCAN_REP_MODE, hci_pscan_rep_mode_evt, 7593 sizeof(struct hci_ev_pscan_rep_mode)), 7594 /* [0x22 = HCI_EV_INQUIRY_RESULT_WITH_RSSI] */ 7595 HCI_EV_VL(HCI_EV_INQUIRY_RESULT_WITH_RSSI, 7596 hci_inquiry_result_with_rssi_evt, 7597 sizeof(struct hci_ev_inquiry_result_rssi), 7598 HCI_MAX_EVENT_SIZE), 7599 /* [0x23 = HCI_EV_REMOTE_EXT_FEATURES] */ 7600 HCI_EV(HCI_EV_REMOTE_EXT_FEATURES, hci_remote_ext_features_evt, 7601 sizeof(struct hci_ev_remote_ext_features)), 7602 /* [0x2c = HCI_EV_SYNC_CONN_COMPLETE] */ 7603 HCI_EV(HCI_EV_SYNC_CONN_COMPLETE, hci_sync_conn_complete_evt, 7604 sizeof(struct hci_ev_sync_conn_complete)), 7605 /* [0x2d = HCI_EV_EXTENDED_INQUIRY_RESULT] */ 7606 HCI_EV_VL(HCI_EV_EXTENDED_INQUIRY_RESULT, 7607 hci_extended_inquiry_result_evt, 7608 sizeof(struct hci_ev_ext_inquiry_result), HCI_MAX_EVENT_SIZE), 7609 /* [0x30 = HCI_EV_KEY_REFRESH_COMPLETE] */ 7610 HCI_EV(HCI_EV_KEY_REFRESH_COMPLETE, hci_key_refresh_complete_evt, 7611 sizeof(struct hci_ev_key_refresh_complete)), 7612 /* [0x31 = HCI_EV_IO_CAPA_REQUEST] */ 7613 HCI_EV(HCI_EV_IO_CAPA_REQUEST, hci_io_capa_request_evt, 7614 sizeof(struct hci_ev_io_capa_request)), 7615 /* [0x32 = HCI_EV_IO_CAPA_REPLY] */ 7616 HCI_EV(HCI_EV_IO_CAPA_REPLY, hci_io_capa_reply_evt, 7617 sizeof(struct hci_ev_io_capa_reply)), 7618 /* [0x33 = HCI_EV_USER_CONFIRM_REQUEST] */ 7619 HCI_EV(HCI_EV_USER_CONFIRM_REQUEST, hci_user_confirm_request_evt, 7620 sizeof(struct hci_ev_user_confirm_req)), 7621 /* [0x34 = HCI_EV_USER_PASSKEY_REQUEST] */ 7622 HCI_EV(HCI_EV_USER_PASSKEY_REQUEST, hci_user_passkey_request_evt, 7623 sizeof(struct hci_ev_user_passkey_req)), 7624 /* [0x35 = HCI_EV_REMOTE_OOB_DATA_REQUEST] */ 7625 HCI_EV(HCI_EV_REMOTE_OOB_DATA_REQUEST, hci_remote_oob_data_request_evt, 7626 sizeof(struct hci_ev_remote_oob_data_request)), 7627 /* [0x36 = HCI_EV_SIMPLE_PAIR_COMPLETE] */ 7628 HCI_EV(HCI_EV_SIMPLE_PAIR_COMPLETE, hci_simple_pair_complete_evt, 7629 sizeof(struct hci_ev_simple_pair_complete)), 7630 /* [0x3b = HCI_EV_USER_PASSKEY_NOTIFY] */ 7631 HCI_EV(HCI_EV_USER_PASSKEY_NOTIFY, hci_user_passkey_notify_evt, 7632 sizeof(struct hci_ev_user_passkey_notify)), 7633 /* [0x3c = HCI_EV_KEYPRESS_NOTIFY] */ 7634 HCI_EV(HCI_EV_KEYPRESS_NOTIFY, hci_keypress_notify_evt, 7635 sizeof(struct hci_ev_keypress_notify)), 7636 /* [0x3d = HCI_EV_REMOTE_HOST_FEATURES] */ 7637 HCI_EV(HCI_EV_REMOTE_HOST_FEATURES, hci_remote_host_features_evt, 7638 sizeof(struct hci_ev_remote_host_features)), 7639 /* [0x3e = HCI_EV_LE_META] */ 7640 HCI_EV_REQ_VL(HCI_EV_LE_META, hci_le_meta_evt, 7641 sizeof(struct hci_ev_le_meta), HCI_MAX_EVENT_SIZE), 7642#if IS_ENABLED(CONFIG_BT_HS) 7643 /* [0x40 = HCI_EV_PHY_LINK_COMPLETE] */ 7644 HCI_EV(HCI_EV_PHY_LINK_COMPLETE, hci_phy_link_complete_evt, 7645 sizeof(struct hci_ev_phy_link_complete)), 7646 /* [0x41 = HCI_EV_CHANNEL_SELECTED] */ 7647 HCI_EV(HCI_EV_CHANNEL_SELECTED, hci_chan_selected_evt, 7648 sizeof(struct hci_ev_channel_selected)), 7649 /* [0x42 = HCI_EV_DISCONN_PHY_LINK_COMPLETE] */ 7650 HCI_EV(HCI_EV_DISCONN_LOGICAL_LINK_COMPLETE, 7651 hci_disconn_loglink_complete_evt, 7652 sizeof(struct hci_ev_disconn_logical_link_complete)), 7653 /* [0x45 = HCI_EV_LOGICAL_LINK_COMPLETE] */ 7654 HCI_EV(HCI_EV_LOGICAL_LINK_COMPLETE, hci_loglink_complete_evt, 7655 sizeof(struct hci_ev_logical_link_complete)), 7656 /* [0x46 = HCI_EV_DISCONN_LOGICAL_LINK_COMPLETE] */ 7657 HCI_EV(HCI_EV_DISCONN_PHY_LINK_COMPLETE, 7658 hci_disconn_phylink_complete_evt, 7659 sizeof(struct hci_ev_disconn_phy_link_complete)), 7660#endif 7661 /* [0x48 = HCI_EV_NUM_COMP_BLOCKS] */ 7662 HCI_EV(HCI_EV_NUM_COMP_BLOCKS, hci_num_comp_blocks_evt, 7663 sizeof(struct hci_ev_num_comp_blocks)), 7664 /* [0xff = HCI_EV_VENDOR] */ 7665 HCI_EV_VL(HCI_EV_VENDOR, msft_vendor_evt, 0, HCI_MAX_EVENT_SIZE), 7666}; 7667 7668static void hci_event_func(struct hci_dev *hdev, u8 event, struct sk_buff *skb, 7669 u16 *opcode, u8 *status, 7670 hci_req_complete_t *req_complete, 7671 hci_req_complete_skb_t *req_complete_skb) 7672{ 7673 const struct hci_ev *ev = &hci_ev_table[event]; 7674 void *data; 7675 7676 if (!ev->func) 7677 return; 7678 7679 if (skb->len < ev->min_len) { 7680 bt_dev_err(hdev, "unexpected event 0x%2.2x length: %u < %u", 7681 event, skb->len, ev->min_len); 7682 return; 7683 } 7684 7685 /* Just warn if the length is over max_len size it still be 7686 * possible to partially parse the event so leave to callback to 7687 * decide if that is acceptable. 7688 */ 7689 if (skb->len > ev->max_len) 7690 bt_dev_warn_ratelimited(hdev, 7691 "unexpected event 0x%2.2x length: %u > %u", 7692 event, skb->len, ev->max_len); 7693 7694 data = hci_ev_skb_pull(hdev, skb, event, ev->min_len); 7695 if (!data) 7696 return; 7697 7698 if (ev->req) 7699 ev->func_req(hdev, data, skb, opcode, status, req_complete, 7700 req_complete_skb); 7701 else 7702 ev->func(hdev, data, skb); 7703} 7704 7705void hci_event_packet(struct hci_dev *hdev, struct sk_buff *skb) 7706{ 7707 struct hci_event_hdr *hdr = (void *) skb->data; 7708 hci_req_complete_t req_complete = NULL; 7709 hci_req_complete_skb_t req_complete_skb = NULL; 7710 struct sk_buff *orig_skb = NULL; 7711 u8 status = 0, event, req_evt = 0; 7712 u16 opcode = HCI_OP_NOP; 7713 7714 if (skb->len < sizeof(*hdr)) { 7715 bt_dev_err(hdev, "Malformed HCI Event"); 7716 goto done; 7717 } 7718 7719 kfree_skb(hdev->recv_event); 7720 hdev->recv_event = skb_clone(skb, GFP_KERNEL); 7721 7722 event = hdr->evt; 7723 if (!event) { 7724 bt_dev_warn(hdev, "Received unexpected HCI Event 0x%2.2x", 7725 event); 7726 goto done; 7727 } 7728 7729 /* Only match event if command OGF is not for LE */ 7730 if (hdev->req_skb && 7731 hci_opcode_ogf(hci_skb_opcode(hdev->req_skb)) != 0x08 && 7732 hci_skb_event(hdev->req_skb) == event) { 7733 hci_req_cmd_complete(hdev, hci_skb_opcode(hdev->req_skb), 7734 status, &req_complete, &req_complete_skb); 7735 req_evt = event; 7736 } 7737 7738 /* If it looks like we might end up having to call 7739 * req_complete_skb, store a pristine copy of the skb since the 7740 * various handlers may modify the original one through 7741 * skb_pull() calls, etc. 7742 */ 7743 if (req_complete_skb || event == HCI_EV_CMD_STATUS || 7744 event == HCI_EV_CMD_COMPLETE) 7745 orig_skb = skb_clone(skb, GFP_KERNEL); 7746 7747 skb_pull(skb, HCI_EVENT_HDR_SIZE); 7748 7749 /* Store wake reason if we're suspended */ 7750 hci_store_wake_reason(hdev, event, skb); 7751 7752 bt_dev_dbg(hdev, "event 0x%2.2x", event); 7753 7754 hci_event_func(hdev, event, skb, &opcode, &status, &req_complete, 7755 &req_complete_skb); 7756 7757 if (req_complete) { 7758 req_complete(hdev, status, opcode); 7759 } else if (req_complete_skb) { 7760 if (!hci_get_cmd_complete(hdev, opcode, req_evt, orig_skb)) { 7761 kfree_skb(orig_skb); 7762 orig_skb = NULL; 7763 } 7764 req_complete_skb(hdev, status, opcode, orig_skb); 7765 } 7766 7767done: 7768 kfree_skb(orig_skb); 7769 kfree_skb(skb); 7770 hdev->stat.evt_rx++; 7771} 7772