1 /* 2 BlueZ - Bluetooth protocol stack for Linux 3 Copyright (c) 2000-2001, 2010, Code Aurora Forum. All rights reserved. 4 Copyright 2023-2024 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 <linux/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_debugfs.h" 37 #include "hci_codec.h" 38 #include "smp.h" 39 #include "msft.h" 40 #include "eir.h" 41 42 #define ZERO_KEY "\x00\x00\x00\x00\x00\x00\x00\x00" \ 43 "\x00\x00\x00\x00\x00\x00\x00\x00" 44 45 /* Handle HCI Event packets */ 46 47 static void *hci_ev_skb_pull(struct hci_dev *hdev, struct sk_buff *skb, 48 u8 ev, size_t len) 49 { 50 void *data; 51 52 data = skb_pull_data(skb, len); 53 if (!data) 54 bt_dev_err(hdev, "Malformed Event: 0x%2.2x", ev); 55 56 return data; 57 } 58 59 static void *hci_cc_skb_pull(struct hci_dev *hdev, struct sk_buff *skb, 60 u16 op, size_t len) 61 { 62 void *data; 63 64 data = skb_pull_data(skb, len); 65 if (!data) 66 bt_dev_err(hdev, "Malformed Command Complete: 0x%4.4x", op); 67 68 return data; 69 } 70 71 static void *hci_le_ev_skb_pull(struct hci_dev *hdev, struct sk_buff *skb, 72 u8 ev, size_t len) 73 { 74 void *data; 75 76 data = skb_pull_data(skb, len); 77 if (!data) 78 bt_dev_err(hdev, "Malformed LE Event: 0x%2.2x", ev); 79 80 return data; 81 } 82 83 static u8 hci_cc_inquiry_cancel(struct hci_dev *hdev, void *data, 84 struct sk_buff *skb) 85 { 86 struct hci_ev_status *rp = data; 87 88 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 89 90 /* It is possible that we receive Inquiry Complete event right 91 * before we receive Inquiry Cancel Command Complete event, in 92 * which case the latter event should have status of Command 93 * Disallowed. This should not be treated as error, since 94 * we actually achieve what Inquiry Cancel wants to achieve, 95 * which is to end the last Inquiry session. 96 */ 97 if (rp->status == HCI_ERROR_COMMAND_DISALLOWED && !test_bit(HCI_INQUIRY, &hdev->flags)) { 98 bt_dev_warn(hdev, "Ignoring error of Inquiry Cancel command"); 99 rp->status = 0x00; 100 } 101 102 if (rp->status) 103 return rp->status; 104 105 clear_bit(HCI_INQUIRY, &hdev->flags); 106 smp_mb__after_atomic(); /* wake_up_bit advises about this barrier */ 107 wake_up_bit(&hdev->flags, HCI_INQUIRY); 108 109 hci_dev_lock(hdev); 110 /* Set discovery state to stopped if we're not doing LE active 111 * scanning. 112 */ 113 if (!hci_dev_test_flag(hdev, HCI_LE_SCAN) || 114 hdev->le_scan_type != LE_SCAN_ACTIVE) 115 hci_discovery_set_state(hdev, DISCOVERY_STOPPED); 116 hci_dev_unlock(hdev); 117 118 return rp->status; 119 } 120 121 static u8 hci_cc_periodic_inq(struct hci_dev *hdev, void *data, 122 struct sk_buff *skb) 123 { 124 struct hci_ev_status *rp = data; 125 126 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 127 128 if (rp->status) 129 return rp->status; 130 131 hci_dev_set_flag(hdev, HCI_PERIODIC_INQ); 132 133 return rp->status; 134 } 135 136 static u8 hci_cc_exit_periodic_inq(struct hci_dev *hdev, void *data, 137 struct sk_buff *skb) 138 { 139 struct hci_ev_status *rp = data; 140 141 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 142 143 if (rp->status) 144 return rp->status; 145 146 hci_dev_clear_flag(hdev, HCI_PERIODIC_INQ); 147 148 return rp->status; 149 } 150 151 static u8 hci_cc_remote_name_req_cancel(struct hci_dev *hdev, void *data, 152 struct sk_buff *skb) 153 { 154 struct hci_rp_remote_name_req_cancel *rp = data; 155 156 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 157 158 return rp->status; 159 } 160 161 static u8 hci_cc_role_discovery(struct hci_dev *hdev, void *data, 162 struct sk_buff *skb) 163 { 164 struct hci_rp_role_discovery *rp = data; 165 struct hci_conn *conn; 166 167 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 168 169 if (rp->status) 170 return rp->status; 171 172 hci_dev_lock(hdev); 173 174 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(rp->handle)); 175 if (conn) 176 conn->role = rp->role; 177 178 hci_dev_unlock(hdev); 179 180 return rp->status; 181 } 182 183 static u8 hci_cc_read_link_policy(struct hci_dev *hdev, void *data, 184 struct sk_buff *skb) 185 { 186 struct hci_rp_read_link_policy *rp = data; 187 struct hci_conn *conn; 188 189 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 190 191 if (rp->status) 192 return rp->status; 193 194 hci_dev_lock(hdev); 195 196 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(rp->handle)); 197 if (conn) 198 conn->link_policy = __le16_to_cpu(rp->policy); 199 200 hci_dev_unlock(hdev); 201 202 return rp->status; 203 } 204 205 static u8 hci_cc_write_link_policy(struct hci_dev *hdev, void *data, 206 struct sk_buff *skb) 207 { 208 struct hci_rp_write_link_policy *rp = data; 209 struct hci_conn *conn; 210 void *sent; 211 212 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 213 214 if (rp->status) 215 return rp->status; 216 217 sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_LINK_POLICY); 218 if (!sent) 219 return rp->status; 220 221 hci_dev_lock(hdev); 222 223 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(rp->handle)); 224 if (conn) 225 conn->link_policy = get_unaligned_le16(sent + 2); 226 227 hci_dev_unlock(hdev); 228 229 return rp->status; 230 } 231 232 static u8 hci_cc_read_def_link_policy(struct hci_dev *hdev, void *data, 233 struct sk_buff *skb) 234 { 235 struct hci_rp_read_def_link_policy *rp = data; 236 237 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 238 239 if (rp->status) 240 return rp->status; 241 242 hdev->link_policy = __le16_to_cpu(rp->policy); 243 244 return rp->status; 245 } 246 247 static u8 hci_cc_write_def_link_policy(struct hci_dev *hdev, void *data, 248 struct sk_buff *skb) 249 { 250 struct hci_ev_status *rp = data; 251 void *sent; 252 253 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 254 255 if (rp->status) 256 return rp->status; 257 258 sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_DEF_LINK_POLICY); 259 if (!sent) 260 return rp->status; 261 262 hdev->link_policy = get_unaligned_le16(sent); 263 264 return rp->status; 265 } 266 267 static u8 hci_cc_reset(struct hci_dev *hdev, void *data, struct sk_buff *skb) 268 { 269 struct hci_ev_status *rp = data; 270 271 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 272 273 clear_bit(HCI_RESET, &hdev->flags); 274 275 if (rp->status) 276 return rp->status; 277 278 /* Reset all non-persistent flags */ 279 hci_dev_clear_volatile_flags(hdev); 280 281 hci_discovery_set_state(hdev, DISCOVERY_STOPPED); 282 283 hdev->inq_tx_power = HCI_TX_POWER_INVALID; 284 hdev->adv_tx_power = HCI_TX_POWER_INVALID; 285 286 memset(hdev->adv_data, 0, sizeof(hdev->adv_data)); 287 hdev->adv_data_len = 0; 288 289 memset(hdev->scan_rsp_data, 0, sizeof(hdev->scan_rsp_data)); 290 hdev->scan_rsp_data_len = 0; 291 292 hdev->le_scan_type = LE_SCAN_PASSIVE; 293 294 hdev->ssp_debug_mode = 0; 295 296 hci_bdaddr_list_clear(&hdev->le_accept_list); 297 hci_bdaddr_list_clear(&hdev->le_resolv_list); 298 299 return rp->status; 300 } 301 302 static u8 hci_cc_read_stored_link_key(struct hci_dev *hdev, void *data, 303 struct sk_buff *skb) 304 { 305 struct hci_rp_read_stored_link_key *rp = data; 306 struct hci_cp_read_stored_link_key *sent; 307 308 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 309 310 sent = hci_sent_cmd_data(hdev, HCI_OP_READ_STORED_LINK_KEY); 311 if (!sent) 312 return rp->status; 313 314 if (!rp->status && sent->read_all == 0x01) { 315 hdev->stored_max_keys = le16_to_cpu(rp->max_keys); 316 hdev->stored_num_keys = le16_to_cpu(rp->num_keys); 317 } 318 319 return rp->status; 320 } 321 322 static u8 hci_cc_delete_stored_link_key(struct hci_dev *hdev, void *data, 323 struct sk_buff *skb) 324 { 325 struct hci_rp_delete_stored_link_key *rp = data; 326 u16 num_keys; 327 328 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 329 330 if (rp->status) 331 return rp->status; 332 333 num_keys = le16_to_cpu(rp->num_keys); 334 335 if (num_keys <= hdev->stored_num_keys) 336 hdev->stored_num_keys -= num_keys; 337 else 338 hdev->stored_num_keys = 0; 339 340 return rp->status; 341 } 342 343 static u8 hci_cc_write_local_name(struct hci_dev *hdev, void *data, 344 struct sk_buff *skb) 345 { 346 struct hci_ev_status *rp = data; 347 void *sent; 348 349 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 350 351 sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_LOCAL_NAME); 352 if (!sent) 353 return rp->status; 354 355 hci_dev_lock(hdev); 356 357 if (hci_dev_test_flag(hdev, HCI_MGMT)) 358 mgmt_set_local_name_complete(hdev, sent, rp->status); 359 else if (!rp->status) 360 memcpy(hdev->dev_name, sent, HCI_MAX_NAME_LENGTH); 361 362 hci_dev_unlock(hdev); 363 364 return rp->status; 365 } 366 367 static u8 hci_cc_read_local_name(struct hci_dev *hdev, void *data, 368 struct sk_buff *skb) 369 { 370 struct hci_rp_read_local_name *rp = data; 371 372 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 373 374 if (rp->status) 375 return rp->status; 376 377 if (hci_dev_test_flag(hdev, HCI_SETUP) || 378 hci_dev_test_flag(hdev, HCI_CONFIG)) 379 memcpy(hdev->dev_name, rp->name, HCI_MAX_NAME_LENGTH); 380 381 return rp->status; 382 } 383 384 static u8 hci_cc_write_auth_enable(struct hci_dev *hdev, void *data, 385 struct sk_buff *skb) 386 { 387 struct hci_ev_status *rp = data; 388 void *sent; 389 390 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 391 392 sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_AUTH_ENABLE); 393 if (!sent) 394 return rp->status; 395 396 hci_dev_lock(hdev); 397 398 if (!rp->status) { 399 __u8 param = *((__u8 *) sent); 400 401 if (param == AUTH_ENABLED) 402 set_bit(HCI_AUTH, &hdev->flags); 403 else 404 clear_bit(HCI_AUTH, &hdev->flags); 405 } 406 407 if (hci_dev_test_flag(hdev, HCI_MGMT)) 408 mgmt_auth_enable_complete(hdev, rp->status); 409 410 hci_dev_unlock(hdev); 411 412 return rp->status; 413 } 414 415 static u8 hci_cc_write_encrypt_mode(struct hci_dev *hdev, void *data, 416 struct sk_buff *skb) 417 { 418 struct hci_ev_status *rp = data; 419 __u8 param; 420 void *sent; 421 422 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 423 424 if (rp->status) 425 return rp->status; 426 427 sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_ENCRYPT_MODE); 428 if (!sent) 429 return rp->status; 430 431 param = *((__u8 *) sent); 432 433 if (param) 434 set_bit(HCI_ENCRYPT, &hdev->flags); 435 else 436 clear_bit(HCI_ENCRYPT, &hdev->flags); 437 438 return rp->status; 439 } 440 441 static u8 hci_cc_write_scan_enable(struct hci_dev *hdev, void *data, 442 struct sk_buff *skb) 443 { 444 struct hci_ev_status *rp = data; 445 __u8 param; 446 void *sent; 447 448 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 449 450 sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_SCAN_ENABLE); 451 if (!sent) 452 return rp->status; 453 454 param = *((__u8 *) sent); 455 456 hci_dev_lock(hdev); 457 458 if (rp->status) { 459 hdev->discov_timeout = 0; 460 goto done; 461 } 462 463 if (param & SCAN_INQUIRY) 464 set_bit(HCI_ISCAN, &hdev->flags); 465 else 466 clear_bit(HCI_ISCAN, &hdev->flags); 467 468 if (param & SCAN_PAGE) 469 set_bit(HCI_PSCAN, &hdev->flags); 470 else 471 clear_bit(HCI_PSCAN, &hdev->flags); 472 473 done: 474 hci_dev_unlock(hdev); 475 476 return rp->status; 477 } 478 479 static u8 hci_cc_set_event_filter(struct hci_dev *hdev, void *data, 480 struct sk_buff *skb) 481 { 482 struct hci_ev_status *rp = data; 483 struct hci_cp_set_event_filter *cp; 484 void *sent; 485 486 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 487 488 if (rp->status) 489 return rp->status; 490 491 sent = hci_sent_cmd_data(hdev, HCI_OP_SET_EVENT_FLT); 492 if (!sent) 493 return rp->status; 494 495 cp = (struct hci_cp_set_event_filter *)sent; 496 497 if (cp->flt_type == HCI_FLT_CLEAR_ALL) 498 hci_dev_clear_flag(hdev, HCI_EVENT_FILTER_CONFIGURED); 499 else 500 hci_dev_set_flag(hdev, HCI_EVENT_FILTER_CONFIGURED); 501 502 return rp->status; 503 } 504 505 static u8 hci_cc_read_class_of_dev(struct hci_dev *hdev, void *data, 506 struct sk_buff *skb) 507 { 508 struct hci_rp_read_class_of_dev *rp = data; 509 510 if (WARN_ON(!hdev)) 511 return HCI_ERROR_UNSPECIFIED; 512 513 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 514 515 if (rp->status) 516 return rp->status; 517 518 memcpy(hdev->dev_class, rp->dev_class, 3); 519 520 bt_dev_dbg(hdev, "class 0x%.2x%.2x%.2x", hdev->dev_class[2], 521 hdev->dev_class[1], hdev->dev_class[0]); 522 523 return rp->status; 524 } 525 526 static u8 hci_cc_write_class_of_dev(struct hci_dev *hdev, void *data, 527 struct sk_buff *skb) 528 { 529 struct hci_ev_status *rp = data; 530 void *sent; 531 532 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 533 534 sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_CLASS_OF_DEV); 535 if (!sent) 536 return rp->status; 537 538 hci_dev_lock(hdev); 539 540 if (!rp->status) 541 memcpy(hdev->dev_class, sent, 3); 542 543 if (hci_dev_test_flag(hdev, HCI_MGMT)) 544 mgmt_set_class_of_dev_complete(hdev, sent, rp->status); 545 546 hci_dev_unlock(hdev); 547 548 return rp->status; 549 } 550 551 static u8 hci_cc_read_voice_setting(struct hci_dev *hdev, void *data, 552 struct sk_buff *skb) 553 { 554 struct hci_rp_read_voice_setting *rp = data; 555 __u16 setting; 556 557 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 558 559 if (rp->status) 560 return rp->status; 561 562 setting = __le16_to_cpu(rp->voice_setting); 563 564 if (hdev->voice_setting == setting) 565 return rp->status; 566 567 hdev->voice_setting = setting; 568 569 bt_dev_dbg(hdev, "voice setting 0x%4.4x", setting); 570 571 if (hdev->notify) 572 hdev->notify(hdev, HCI_NOTIFY_VOICE_SETTING); 573 574 return rp->status; 575 } 576 577 static u8 hci_cc_write_voice_setting(struct hci_dev *hdev, void *data, 578 struct sk_buff *skb) 579 { 580 struct hci_ev_status *rp = data; 581 __u16 setting; 582 void *sent; 583 584 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 585 586 if (rp->status) 587 return rp->status; 588 589 sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_VOICE_SETTING); 590 if (!sent) 591 return rp->status; 592 593 setting = get_unaligned_le16(sent); 594 595 if (hdev->voice_setting == setting) 596 return rp->status; 597 598 hdev->voice_setting = setting; 599 600 bt_dev_dbg(hdev, "voice setting 0x%4.4x", setting); 601 602 if (hdev->notify) 603 hdev->notify(hdev, HCI_NOTIFY_VOICE_SETTING); 604 605 return rp->status; 606 } 607 608 static u8 hci_cc_read_num_supported_iac(struct hci_dev *hdev, void *data, 609 struct sk_buff *skb) 610 { 611 struct hci_rp_read_num_supported_iac *rp = data; 612 613 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 614 615 if (rp->status) 616 return rp->status; 617 618 hdev->num_iac = rp->num_iac; 619 620 bt_dev_dbg(hdev, "num iac %d", hdev->num_iac); 621 622 return rp->status; 623 } 624 625 static u8 hci_cc_write_ssp_mode(struct hci_dev *hdev, void *data, 626 struct sk_buff *skb) 627 { 628 struct hci_ev_status *rp = data; 629 struct hci_cp_write_ssp_mode *sent; 630 631 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 632 633 sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_SSP_MODE); 634 if (!sent) 635 return rp->status; 636 637 hci_dev_lock(hdev); 638 639 if (!rp->status) { 640 if (sent->mode) 641 hdev->features[1][0] |= LMP_HOST_SSP; 642 else 643 hdev->features[1][0] &= ~LMP_HOST_SSP; 644 } 645 646 if (!rp->status) { 647 if (sent->mode) 648 hci_dev_set_flag(hdev, HCI_SSP_ENABLED); 649 else 650 hci_dev_clear_flag(hdev, HCI_SSP_ENABLED); 651 } 652 653 hci_dev_unlock(hdev); 654 655 return rp->status; 656 } 657 658 static u8 hci_cc_write_sc_support(struct hci_dev *hdev, void *data, 659 struct sk_buff *skb) 660 { 661 struct hci_ev_status *rp = data; 662 struct hci_cp_write_sc_support *sent; 663 664 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 665 666 sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_SC_SUPPORT); 667 if (!sent) 668 return rp->status; 669 670 hci_dev_lock(hdev); 671 672 if (!rp->status) { 673 if (sent->support) 674 hdev->features[1][0] |= LMP_HOST_SC; 675 else 676 hdev->features[1][0] &= ~LMP_HOST_SC; 677 } 678 679 if (!hci_dev_test_flag(hdev, HCI_MGMT) && !rp->status) { 680 if (sent->support) 681 hci_dev_set_flag(hdev, HCI_SC_ENABLED); 682 else 683 hci_dev_clear_flag(hdev, HCI_SC_ENABLED); 684 } 685 686 hci_dev_unlock(hdev); 687 688 return rp->status; 689 } 690 691 static u8 hci_cc_read_local_version(struct hci_dev *hdev, void *data, 692 struct sk_buff *skb) 693 { 694 struct hci_rp_read_local_version *rp = data; 695 696 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 697 698 if (rp->status) 699 return rp->status; 700 701 if (hci_dev_test_flag(hdev, HCI_SETUP) || 702 hci_dev_test_flag(hdev, HCI_CONFIG)) { 703 hdev->hci_ver = rp->hci_ver; 704 hdev->hci_rev = __le16_to_cpu(rp->hci_rev); 705 hdev->lmp_ver = rp->lmp_ver; 706 hdev->manufacturer = __le16_to_cpu(rp->manufacturer); 707 hdev->lmp_subver = __le16_to_cpu(rp->lmp_subver); 708 } 709 710 return rp->status; 711 } 712 713 static u8 hci_cc_read_enc_key_size(struct hci_dev *hdev, void *data, 714 struct sk_buff *skb) 715 { 716 struct hci_rp_read_enc_key_size *rp = data; 717 struct hci_conn *conn; 718 u16 handle; 719 u8 status = rp->status; 720 721 bt_dev_dbg(hdev, "status 0x%2.2x", status); 722 723 handle = le16_to_cpu(rp->handle); 724 725 hci_dev_lock(hdev); 726 727 conn = hci_conn_hash_lookup_handle(hdev, handle); 728 if (!conn) { 729 status = 0xFF; 730 goto done; 731 } 732 733 /* While unexpected, the read_enc_key_size command may fail. The most 734 * secure approach is to then assume the key size is 0 to force a 735 * disconnection. 736 */ 737 if (status) { 738 bt_dev_err(hdev, "failed to read key size for handle %u", 739 handle); 740 conn->enc_key_size = 0; 741 } else { 742 u8 *key_enc_size = hci_conn_key_enc_size(conn); 743 744 conn->enc_key_size = rp->key_size; 745 status = 0; 746 747 /* Attempt to check if the key size is too small or if it has 748 * been downgraded from the last time it was stored as part of 749 * the link_key. 750 */ 751 if (conn->enc_key_size < hdev->min_enc_key_size || 752 (key_enc_size && conn->enc_key_size < *key_enc_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 /* Update the key encryption size with the connection one */ 767 if (key_enc_size && *key_enc_size != conn->enc_key_size) 768 *key_enc_size = conn->enc_key_size; 769 } 770 771 hci_encrypt_cfm(conn, status); 772 773 done: 774 hci_dev_unlock(hdev); 775 776 return status; 777 } 778 779 static u8 hci_cc_read_local_commands(struct hci_dev *hdev, void *data, 780 struct sk_buff *skb) 781 { 782 struct hci_rp_read_local_commands *rp = data; 783 784 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 785 786 if (rp->status) 787 return rp->status; 788 789 if (hci_dev_test_flag(hdev, HCI_SETUP) || 790 hci_dev_test_flag(hdev, HCI_CONFIG)) 791 memcpy(hdev->commands, rp->commands, sizeof(hdev->commands)); 792 793 return rp->status; 794 } 795 796 static u8 hci_cc_read_auth_payload_timeout(struct hci_dev *hdev, void *data, 797 struct sk_buff *skb) 798 { 799 struct hci_rp_read_auth_payload_to *rp = data; 800 struct hci_conn *conn; 801 802 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 803 804 if (rp->status) 805 return rp->status; 806 807 hci_dev_lock(hdev); 808 809 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(rp->handle)); 810 if (conn) 811 conn->auth_payload_timeout = __le16_to_cpu(rp->timeout); 812 813 hci_dev_unlock(hdev); 814 815 return rp->status; 816 } 817 818 static u8 hci_cc_write_auth_payload_timeout(struct hci_dev *hdev, void *data, 819 struct sk_buff *skb) 820 { 821 struct hci_rp_write_auth_payload_to *rp = data; 822 struct hci_conn *conn; 823 void *sent; 824 825 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 826 827 sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_AUTH_PAYLOAD_TO); 828 if (!sent) 829 return rp->status; 830 831 hci_dev_lock(hdev); 832 833 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(rp->handle)); 834 if (!conn) { 835 rp->status = 0xff; 836 goto unlock; 837 } 838 839 if (!rp->status) 840 conn->auth_payload_timeout = get_unaligned_le16(sent + 2); 841 842 unlock: 843 hci_dev_unlock(hdev); 844 845 return rp->status; 846 } 847 848 static u8 hci_cc_read_local_features(struct hci_dev *hdev, void *data, 849 struct sk_buff *skb) 850 { 851 struct hci_rp_read_local_features *rp = data; 852 853 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 854 855 if (rp->status) 856 return rp->status; 857 858 memcpy(hdev->features, rp->features, 8); 859 860 /* Adjust default settings according to features 861 * supported by device. */ 862 863 if (hdev->features[0][0] & LMP_3SLOT) 864 hdev->pkt_type |= (HCI_DM3 | HCI_DH3); 865 866 if (hdev->features[0][0] & LMP_5SLOT) 867 hdev->pkt_type |= (HCI_DM5 | HCI_DH5); 868 869 if (hdev->features[0][1] & LMP_HV2) { 870 hdev->pkt_type |= (HCI_HV2); 871 hdev->esco_type |= (ESCO_HV2); 872 } 873 874 if (hdev->features[0][1] & LMP_HV3) { 875 hdev->pkt_type |= (HCI_HV3); 876 hdev->esco_type |= (ESCO_HV3); 877 } 878 879 if (lmp_esco_capable(hdev)) 880 hdev->esco_type |= (ESCO_EV3); 881 882 if (hdev->features[0][4] & LMP_EV4) 883 hdev->esco_type |= (ESCO_EV4); 884 885 if (hdev->features[0][4] & LMP_EV5) 886 hdev->esco_type |= (ESCO_EV5); 887 888 if (hdev->features[0][5] & LMP_EDR_ESCO_2M) 889 hdev->esco_type |= (ESCO_2EV3); 890 891 if (hdev->features[0][5] & LMP_EDR_ESCO_3M) 892 hdev->esco_type |= (ESCO_3EV3); 893 894 if (hdev->features[0][5] & LMP_EDR_3S_ESCO) 895 hdev->esco_type |= (ESCO_2EV5 | ESCO_3EV5); 896 897 return rp->status; 898 } 899 900 static u8 hci_cc_read_local_ext_features(struct hci_dev *hdev, void *data, 901 struct sk_buff *skb) 902 { 903 struct hci_rp_read_local_ext_features *rp = data; 904 905 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 906 907 if (rp->status) 908 return rp->status; 909 910 if (hdev->max_page < rp->max_page) { 911 if (test_bit(HCI_QUIRK_BROKEN_LOCAL_EXT_FEATURES_PAGE_2, 912 &hdev->quirks)) 913 bt_dev_warn(hdev, "broken local ext features page 2"); 914 else 915 hdev->max_page = rp->max_page; 916 } 917 918 if (rp->page < HCI_MAX_PAGES) 919 memcpy(hdev->features[rp->page], rp->features, 8); 920 921 return rp->status; 922 } 923 924 static u8 hci_cc_read_buffer_size(struct hci_dev *hdev, void *data, 925 struct sk_buff *skb) 926 { 927 struct hci_rp_read_buffer_size *rp = data; 928 929 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 930 931 if (rp->status) 932 return rp->status; 933 934 hdev->acl_mtu = __le16_to_cpu(rp->acl_mtu); 935 hdev->sco_mtu = rp->sco_mtu; 936 hdev->acl_pkts = __le16_to_cpu(rp->acl_max_pkt); 937 hdev->sco_pkts = __le16_to_cpu(rp->sco_max_pkt); 938 939 if (test_bit(HCI_QUIRK_FIXUP_BUFFER_SIZE, &hdev->quirks)) { 940 hdev->sco_mtu = 64; 941 hdev->sco_pkts = 8; 942 } 943 944 if (!read_voice_setting_capable(hdev)) 945 hdev->sco_pkts = 0; 946 947 hdev->acl_cnt = hdev->acl_pkts; 948 hdev->sco_cnt = hdev->sco_pkts; 949 950 BT_DBG("%s acl mtu %d:%d sco mtu %d:%d", hdev->name, hdev->acl_mtu, 951 hdev->acl_pkts, hdev->sco_mtu, hdev->sco_pkts); 952 953 if (!hdev->acl_mtu || !hdev->acl_pkts) 954 return HCI_ERROR_INVALID_PARAMETERS; 955 956 return rp->status; 957 } 958 959 static u8 hci_cc_read_bd_addr(struct hci_dev *hdev, void *data, 960 struct sk_buff *skb) 961 { 962 struct hci_rp_read_bd_addr *rp = data; 963 964 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 965 966 if (rp->status) 967 return rp->status; 968 969 if (test_bit(HCI_INIT, &hdev->flags)) 970 bacpy(&hdev->bdaddr, &rp->bdaddr); 971 972 if (hci_dev_test_flag(hdev, HCI_SETUP)) 973 bacpy(&hdev->setup_addr, &rp->bdaddr); 974 975 return rp->status; 976 } 977 978 static u8 hci_cc_read_local_pairing_opts(struct hci_dev *hdev, void *data, 979 struct sk_buff *skb) 980 { 981 struct hci_rp_read_local_pairing_opts *rp = data; 982 983 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 984 985 if (rp->status) 986 return rp->status; 987 988 if (hci_dev_test_flag(hdev, HCI_SETUP) || 989 hci_dev_test_flag(hdev, HCI_CONFIG)) { 990 hdev->pairing_opts = rp->pairing_opts; 991 hdev->max_enc_key_size = rp->max_key_size; 992 } 993 994 return rp->status; 995 } 996 997 static u8 hci_cc_read_page_scan_activity(struct hci_dev *hdev, void *data, 998 struct sk_buff *skb) 999 { 1000 struct hci_rp_read_page_scan_activity *rp = data; 1001 1002 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1003 1004 if (rp->status) 1005 return rp->status; 1006 1007 if (test_bit(HCI_INIT, &hdev->flags)) { 1008 hdev->page_scan_interval = __le16_to_cpu(rp->interval); 1009 hdev->page_scan_window = __le16_to_cpu(rp->window); 1010 } 1011 1012 return rp->status; 1013 } 1014 1015 static u8 hci_cc_write_page_scan_activity(struct hci_dev *hdev, void *data, 1016 struct sk_buff *skb) 1017 { 1018 struct hci_ev_status *rp = data; 1019 struct hci_cp_write_page_scan_activity *sent; 1020 1021 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1022 1023 if (rp->status) 1024 return rp->status; 1025 1026 sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_PAGE_SCAN_ACTIVITY); 1027 if (!sent) 1028 return rp->status; 1029 1030 hdev->page_scan_interval = __le16_to_cpu(sent->interval); 1031 hdev->page_scan_window = __le16_to_cpu(sent->window); 1032 1033 return rp->status; 1034 } 1035 1036 static u8 hci_cc_read_page_scan_type(struct hci_dev *hdev, void *data, 1037 struct sk_buff *skb) 1038 { 1039 struct hci_rp_read_page_scan_type *rp = data; 1040 1041 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1042 1043 if (rp->status) 1044 return rp->status; 1045 1046 if (test_bit(HCI_INIT, &hdev->flags)) 1047 hdev->page_scan_type = rp->type; 1048 1049 return rp->status; 1050 } 1051 1052 static u8 hci_cc_write_page_scan_type(struct hci_dev *hdev, void *data, 1053 struct sk_buff *skb) 1054 { 1055 struct hci_ev_status *rp = data; 1056 u8 *type; 1057 1058 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1059 1060 if (rp->status) 1061 return rp->status; 1062 1063 type = hci_sent_cmd_data(hdev, HCI_OP_WRITE_PAGE_SCAN_TYPE); 1064 if (type) 1065 hdev->page_scan_type = *type; 1066 1067 return rp->status; 1068 } 1069 1070 static u8 hci_cc_read_clock(struct hci_dev *hdev, void *data, 1071 struct sk_buff *skb) 1072 { 1073 struct hci_rp_read_clock *rp = data; 1074 struct hci_cp_read_clock *cp; 1075 struct hci_conn *conn; 1076 1077 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1078 1079 if (rp->status) 1080 return rp->status; 1081 1082 hci_dev_lock(hdev); 1083 1084 cp = hci_sent_cmd_data(hdev, HCI_OP_READ_CLOCK); 1085 if (!cp) 1086 goto unlock; 1087 1088 if (cp->which == 0x00) { 1089 hdev->clock = le32_to_cpu(rp->clock); 1090 goto unlock; 1091 } 1092 1093 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(rp->handle)); 1094 if (conn) { 1095 conn->clock = le32_to_cpu(rp->clock); 1096 conn->clock_accuracy = le16_to_cpu(rp->accuracy); 1097 } 1098 1099 unlock: 1100 hci_dev_unlock(hdev); 1101 return rp->status; 1102 } 1103 1104 static u8 hci_cc_read_inq_rsp_tx_power(struct hci_dev *hdev, void *data, 1105 struct sk_buff *skb) 1106 { 1107 struct hci_rp_read_inq_rsp_tx_power *rp = data; 1108 1109 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1110 1111 if (rp->status) 1112 return rp->status; 1113 1114 hdev->inq_tx_power = rp->tx_power; 1115 1116 return rp->status; 1117 } 1118 1119 static u8 hci_cc_read_def_err_data_reporting(struct hci_dev *hdev, void *data, 1120 struct sk_buff *skb) 1121 { 1122 struct hci_rp_read_def_err_data_reporting *rp = data; 1123 1124 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1125 1126 if (rp->status) 1127 return rp->status; 1128 1129 hdev->err_data_reporting = rp->err_data_reporting; 1130 1131 return rp->status; 1132 } 1133 1134 static u8 hci_cc_write_def_err_data_reporting(struct hci_dev *hdev, void *data, 1135 struct sk_buff *skb) 1136 { 1137 struct hci_ev_status *rp = data; 1138 struct hci_cp_write_def_err_data_reporting *cp; 1139 1140 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1141 1142 if (rp->status) 1143 return rp->status; 1144 1145 cp = hci_sent_cmd_data(hdev, HCI_OP_WRITE_DEF_ERR_DATA_REPORTING); 1146 if (!cp) 1147 return rp->status; 1148 1149 hdev->err_data_reporting = cp->err_data_reporting; 1150 1151 return rp->status; 1152 } 1153 1154 static u8 hci_cc_pin_code_reply(struct hci_dev *hdev, void *data, 1155 struct sk_buff *skb) 1156 { 1157 struct hci_rp_pin_code_reply *rp = data; 1158 struct hci_cp_pin_code_reply *cp; 1159 struct hci_conn *conn; 1160 1161 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1162 1163 hci_dev_lock(hdev); 1164 1165 if (hci_dev_test_flag(hdev, HCI_MGMT)) 1166 mgmt_pin_code_reply_complete(hdev, &rp->bdaddr, rp->status); 1167 1168 if (rp->status) 1169 goto unlock; 1170 1171 cp = hci_sent_cmd_data(hdev, HCI_OP_PIN_CODE_REPLY); 1172 if (!cp) 1173 goto unlock; 1174 1175 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &cp->bdaddr); 1176 if (conn) 1177 conn->pin_length = cp->pin_len; 1178 1179 unlock: 1180 hci_dev_unlock(hdev); 1181 return rp->status; 1182 } 1183 1184 static u8 hci_cc_pin_code_neg_reply(struct hci_dev *hdev, void *data, 1185 struct sk_buff *skb) 1186 { 1187 struct hci_rp_pin_code_neg_reply *rp = data; 1188 1189 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1190 1191 hci_dev_lock(hdev); 1192 1193 if (hci_dev_test_flag(hdev, HCI_MGMT)) 1194 mgmt_pin_code_neg_reply_complete(hdev, &rp->bdaddr, 1195 rp->status); 1196 1197 hci_dev_unlock(hdev); 1198 1199 return rp->status; 1200 } 1201 1202 static u8 hci_cc_le_read_buffer_size(struct hci_dev *hdev, void *data, 1203 struct sk_buff *skb) 1204 { 1205 struct hci_rp_le_read_buffer_size *rp = data; 1206 1207 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1208 1209 if (rp->status) 1210 return rp->status; 1211 1212 hdev->le_mtu = __le16_to_cpu(rp->le_mtu); 1213 hdev->le_pkts = rp->le_max_pkt; 1214 1215 hdev->le_cnt = hdev->le_pkts; 1216 1217 BT_DBG("%s le mtu %d:%d", hdev->name, hdev->le_mtu, hdev->le_pkts); 1218 1219 if (hdev->le_mtu && hdev->le_mtu < HCI_MIN_LE_MTU) 1220 return HCI_ERROR_INVALID_PARAMETERS; 1221 1222 return rp->status; 1223 } 1224 1225 static u8 hci_cc_le_read_local_features(struct hci_dev *hdev, void *data, 1226 struct sk_buff *skb) 1227 { 1228 struct hci_rp_le_read_local_features *rp = data; 1229 1230 BT_DBG("%s status 0x%2.2x", hdev->name, rp->status); 1231 1232 if (rp->status) 1233 return rp->status; 1234 1235 memcpy(hdev->le_features, rp->features, 8); 1236 1237 return rp->status; 1238 } 1239 1240 static u8 hci_cc_le_read_adv_tx_power(struct hci_dev *hdev, void *data, 1241 struct sk_buff *skb) 1242 { 1243 struct hci_rp_le_read_adv_tx_power *rp = data; 1244 1245 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1246 1247 if (rp->status) 1248 return rp->status; 1249 1250 hdev->adv_tx_power = rp->tx_power; 1251 1252 return rp->status; 1253 } 1254 1255 static u8 hci_cc_user_confirm_reply(struct hci_dev *hdev, void *data, 1256 struct sk_buff *skb) 1257 { 1258 struct hci_rp_user_confirm_reply *rp = data; 1259 1260 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1261 1262 hci_dev_lock(hdev); 1263 1264 if (hci_dev_test_flag(hdev, HCI_MGMT)) 1265 mgmt_user_confirm_reply_complete(hdev, &rp->bdaddr, ACL_LINK, 0, 1266 rp->status); 1267 1268 hci_dev_unlock(hdev); 1269 1270 return rp->status; 1271 } 1272 1273 static u8 hci_cc_user_confirm_neg_reply(struct hci_dev *hdev, void *data, 1274 struct sk_buff *skb) 1275 { 1276 struct hci_rp_user_confirm_reply *rp = data; 1277 1278 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1279 1280 hci_dev_lock(hdev); 1281 1282 if (hci_dev_test_flag(hdev, HCI_MGMT)) 1283 mgmt_user_confirm_neg_reply_complete(hdev, &rp->bdaddr, 1284 ACL_LINK, 0, rp->status); 1285 1286 hci_dev_unlock(hdev); 1287 1288 return rp->status; 1289 } 1290 1291 static u8 hci_cc_user_passkey_reply(struct hci_dev *hdev, void *data, 1292 struct sk_buff *skb) 1293 { 1294 struct hci_rp_user_confirm_reply *rp = data; 1295 1296 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1297 1298 hci_dev_lock(hdev); 1299 1300 if (hci_dev_test_flag(hdev, HCI_MGMT)) 1301 mgmt_user_passkey_reply_complete(hdev, &rp->bdaddr, ACL_LINK, 1302 0, rp->status); 1303 1304 hci_dev_unlock(hdev); 1305 1306 return rp->status; 1307 } 1308 1309 static u8 hci_cc_user_passkey_neg_reply(struct hci_dev *hdev, void *data, 1310 struct sk_buff *skb) 1311 { 1312 struct hci_rp_user_confirm_reply *rp = data; 1313 1314 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1315 1316 hci_dev_lock(hdev); 1317 1318 if (hci_dev_test_flag(hdev, HCI_MGMT)) 1319 mgmt_user_passkey_neg_reply_complete(hdev, &rp->bdaddr, 1320 ACL_LINK, 0, rp->status); 1321 1322 hci_dev_unlock(hdev); 1323 1324 return rp->status; 1325 } 1326 1327 static u8 hci_cc_read_local_oob_data(struct hci_dev *hdev, void *data, 1328 struct sk_buff *skb) 1329 { 1330 struct hci_rp_read_local_oob_data *rp = data; 1331 1332 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1333 1334 return rp->status; 1335 } 1336 1337 static u8 hci_cc_read_local_oob_ext_data(struct hci_dev *hdev, void *data, 1338 struct sk_buff *skb) 1339 { 1340 struct hci_rp_read_local_oob_ext_data *rp = data; 1341 1342 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1343 1344 return rp->status; 1345 } 1346 1347 static u8 hci_cc_le_set_random_addr(struct hci_dev *hdev, void *data, 1348 struct sk_buff *skb) 1349 { 1350 struct hci_ev_status *rp = data; 1351 bdaddr_t *sent; 1352 1353 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1354 1355 if (rp->status) 1356 return rp->status; 1357 1358 sent = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_RANDOM_ADDR); 1359 if (!sent) 1360 return rp->status; 1361 1362 hci_dev_lock(hdev); 1363 1364 bacpy(&hdev->random_addr, sent); 1365 1366 if (!bacmp(&hdev->rpa, sent)) { 1367 hci_dev_clear_flag(hdev, HCI_RPA_EXPIRED); 1368 queue_delayed_work(hdev->workqueue, &hdev->rpa_expired, 1369 secs_to_jiffies(hdev->rpa_timeout)); 1370 } 1371 1372 hci_dev_unlock(hdev); 1373 1374 return rp->status; 1375 } 1376 1377 static u8 hci_cc_le_set_default_phy(struct hci_dev *hdev, void *data, 1378 struct sk_buff *skb) 1379 { 1380 struct hci_ev_status *rp = data; 1381 struct hci_cp_le_set_default_phy *cp; 1382 1383 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1384 1385 if (rp->status) 1386 return rp->status; 1387 1388 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_DEFAULT_PHY); 1389 if (!cp) 1390 return rp->status; 1391 1392 hci_dev_lock(hdev); 1393 1394 hdev->le_tx_def_phys = cp->tx_phys; 1395 hdev->le_rx_def_phys = cp->rx_phys; 1396 1397 hci_dev_unlock(hdev); 1398 1399 return rp->status; 1400 } 1401 1402 static u8 hci_cc_le_set_adv_set_random_addr(struct hci_dev *hdev, void *data, 1403 struct sk_buff *skb) 1404 { 1405 struct hci_ev_status *rp = data; 1406 struct hci_cp_le_set_adv_set_rand_addr *cp; 1407 struct adv_info *adv; 1408 1409 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1410 1411 if (rp->status) 1412 return rp->status; 1413 1414 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_ADV_SET_RAND_ADDR); 1415 /* Update only in case the adv instance since handle 0x00 shall be using 1416 * HCI_OP_LE_SET_RANDOM_ADDR since that allows both extended and 1417 * non-extended adverting. 1418 */ 1419 if (!cp || !cp->handle) 1420 return rp->status; 1421 1422 hci_dev_lock(hdev); 1423 1424 adv = hci_find_adv_instance(hdev, cp->handle); 1425 if (adv) { 1426 bacpy(&adv->random_addr, &cp->bdaddr); 1427 if (!bacmp(&hdev->rpa, &cp->bdaddr)) { 1428 adv->rpa_expired = false; 1429 queue_delayed_work(hdev->workqueue, 1430 &adv->rpa_expired_cb, 1431 secs_to_jiffies(hdev->rpa_timeout)); 1432 } 1433 } 1434 1435 hci_dev_unlock(hdev); 1436 1437 return rp->status; 1438 } 1439 1440 static u8 hci_cc_le_remove_adv_set(struct hci_dev *hdev, void *data, 1441 struct sk_buff *skb) 1442 { 1443 struct hci_ev_status *rp = data; 1444 u8 *instance; 1445 int err; 1446 1447 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1448 1449 if (rp->status) 1450 return rp->status; 1451 1452 instance = hci_sent_cmd_data(hdev, HCI_OP_LE_REMOVE_ADV_SET); 1453 if (!instance) 1454 return rp->status; 1455 1456 hci_dev_lock(hdev); 1457 1458 err = hci_remove_adv_instance(hdev, *instance); 1459 if (!err) 1460 mgmt_advertising_removed(hci_skb_sk(hdev->sent_cmd), hdev, 1461 *instance); 1462 1463 hci_dev_unlock(hdev); 1464 1465 return rp->status; 1466 } 1467 1468 static u8 hci_cc_le_clear_adv_sets(struct hci_dev *hdev, void *data, 1469 struct sk_buff *skb) 1470 { 1471 struct hci_ev_status *rp = data; 1472 struct adv_info *adv, *n; 1473 int err; 1474 1475 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1476 1477 if (rp->status) 1478 return rp->status; 1479 1480 if (!hci_sent_cmd_data(hdev, HCI_OP_LE_CLEAR_ADV_SETS)) 1481 return rp->status; 1482 1483 hci_dev_lock(hdev); 1484 1485 list_for_each_entry_safe(adv, n, &hdev->adv_instances, list) { 1486 u8 instance = adv->instance; 1487 1488 err = hci_remove_adv_instance(hdev, instance); 1489 if (!err) 1490 mgmt_advertising_removed(hci_skb_sk(hdev->sent_cmd), 1491 hdev, instance); 1492 } 1493 1494 hci_dev_unlock(hdev); 1495 1496 return rp->status; 1497 } 1498 1499 static u8 hci_cc_le_read_transmit_power(struct hci_dev *hdev, void *data, 1500 struct sk_buff *skb) 1501 { 1502 struct hci_rp_le_read_transmit_power *rp = data; 1503 1504 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1505 1506 if (rp->status) 1507 return rp->status; 1508 1509 hdev->min_le_tx_power = rp->min_le_tx_power; 1510 hdev->max_le_tx_power = rp->max_le_tx_power; 1511 1512 return rp->status; 1513 } 1514 1515 static u8 hci_cc_le_set_privacy_mode(struct hci_dev *hdev, void *data, 1516 struct sk_buff *skb) 1517 { 1518 struct hci_ev_status *rp = data; 1519 struct hci_cp_le_set_privacy_mode *cp; 1520 struct hci_conn_params *params; 1521 1522 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1523 1524 if (rp->status) 1525 return rp->status; 1526 1527 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_PRIVACY_MODE); 1528 if (!cp) 1529 return rp->status; 1530 1531 hci_dev_lock(hdev); 1532 1533 params = hci_conn_params_lookup(hdev, &cp->bdaddr, cp->bdaddr_type); 1534 if (params) 1535 WRITE_ONCE(params->privacy_mode, cp->mode); 1536 1537 hci_dev_unlock(hdev); 1538 1539 return rp->status; 1540 } 1541 1542 static u8 hci_cc_le_set_adv_enable(struct hci_dev *hdev, void *data, 1543 struct sk_buff *skb) 1544 { 1545 struct hci_ev_status *rp = data; 1546 __u8 *sent; 1547 1548 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1549 1550 if (rp->status) 1551 return rp->status; 1552 1553 sent = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_ADV_ENABLE); 1554 if (!sent) 1555 return rp->status; 1556 1557 hci_dev_lock(hdev); 1558 1559 /* If we're doing connection initiation as peripheral. Set a 1560 * timeout in case something goes wrong. 1561 */ 1562 if (*sent) { 1563 struct hci_conn *conn; 1564 1565 hci_dev_set_flag(hdev, HCI_LE_ADV); 1566 1567 conn = hci_lookup_le_connect(hdev); 1568 if (conn) 1569 queue_delayed_work(hdev->workqueue, 1570 &conn->le_conn_timeout, 1571 conn->conn_timeout); 1572 } else { 1573 hci_dev_clear_flag(hdev, HCI_LE_ADV); 1574 } 1575 1576 hci_dev_unlock(hdev); 1577 1578 return rp->status; 1579 } 1580 1581 static u8 hci_cc_le_set_ext_adv_enable(struct hci_dev *hdev, void *data, 1582 struct sk_buff *skb) 1583 { 1584 struct hci_cp_le_set_ext_adv_enable *cp; 1585 struct hci_cp_ext_adv_set *set; 1586 struct adv_info *adv = NULL, *n; 1587 struct hci_ev_status *rp = data; 1588 1589 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1590 1591 if (rp->status) 1592 return rp->status; 1593 1594 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_EXT_ADV_ENABLE); 1595 if (!cp) 1596 return rp->status; 1597 1598 set = (void *)cp->data; 1599 1600 hci_dev_lock(hdev); 1601 1602 if (cp->num_of_sets) 1603 adv = hci_find_adv_instance(hdev, set->handle); 1604 1605 if (cp->enable) { 1606 struct hci_conn *conn; 1607 1608 hci_dev_set_flag(hdev, HCI_LE_ADV); 1609 1610 if (adv && !adv->periodic) 1611 adv->enabled = true; 1612 1613 conn = hci_lookup_le_connect(hdev); 1614 if (conn) 1615 queue_delayed_work(hdev->workqueue, 1616 &conn->le_conn_timeout, 1617 conn->conn_timeout); 1618 } else { 1619 if (cp->num_of_sets) { 1620 if (adv) 1621 adv->enabled = false; 1622 1623 /* If just one instance was disabled check if there are 1624 * any other instance enabled before clearing HCI_LE_ADV 1625 */ 1626 list_for_each_entry_safe(adv, n, &hdev->adv_instances, 1627 list) { 1628 if (adv->enabled) 1629 goto unlock; 1630 } 1631 } else { 1632 /* All instances shall be considered disabled */ 1633 list_for_each_entry_safe(adv, n, &hdev->adv_instances, 1634 list) 1635 adv->enabled = false; 1636 } 1637 1638 hci_dev_clear_flag(hdev, HCI_LE_ADV); 1639 } 1640 1641 unlock: 1642 hci_dev_unlock(hdev); 1643 return rp->status; 1644 } 1645 1646 static u8 hci_cc_le_set_scan_param(struct hci_dev *hdev, void *data, 1647 struct sk_buff *skb) 1648 { 1649 struct hci_cp_le_set_scan_param *cp; 1650 struct hci_ev_status *rp = data; 1651 1652 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1653 1654 if (rp->status) 1655 return rp->status; 1656 1657 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_SCAN_PARAM); 1658 if (!cp) 1659 return rp->status; 1660 1661 hci_dev_lock(hdev); 1662 1663 hdev->le_scan_type = cp->type; 1664 1665 hci_dev_unlock(hdev); 1666 1667 return rp->status; 1668 } 1669 1670 static u8 hci_cc_le_set_ext_scan_param(struct hci_dev *hdev, void *data, 1671 struct sk_buff *skb) 1672 { 1673 struct hci_cp_le_set_ext_scan_params *cp; 1674 struct hci_ev_status *rp = data; 1675 struct hci_cp_le_scan_phy_params *phy_param; 1676 1677 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1678 1679 if (rp->status) 1680 return rp->status; 1681 1682 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_EXT_SCAN_PARAMS); 1683 if (!cp) 1684 return rp->status; 1685 1686 phy_param = (void *)cp->data; 1687 1688 hci_dev_lock(hdev); 1689 1690 hdev->le_scan_type = phy_param->type; 1691 1692 hci_dev_unlock(hdev); 1693 1694 return rp->status; 1695 } 1696 1697 static bool has_pending_adv_report(struct hci_dev *hdev) 1698 { 1699 struct discovery_state *d = &hdev->discovery; 1700 1701 return bacmp(&d->last_adv_addr, BDADDR_ANY); 1702 } 1703 1704 static void clear_pending_adv_report(struct hci_dev *hdev) 1705 { 1706 struct discovery_state *d = &hdev->discovery; 1707 1708 bacpy(&d->last_adv_addr, BDADDR_ANY); 1709 d->last_adv_data_len = 0; 1710 } 1711 1712 static void store_pending_adv_report(struct hci_dev *hdev, bdaddr_t *bdaddr, 1713 u8 bdaddr_type, s8 rssi, u32 flags, 1714 u8 *data, u8 len) 1715 { 1716 struct discovery_state *d = &hdev->discovery; 1717 1718 if (len > max_adv_len(hdev)) 1719 return; 1720 1721 bacpy(&d->last_adv_addr, bdaddr); 1722 d->last_adv_addr_type = bdaddr_type; 1723 d->last_adv_rssi = rssi; 1724 d->last_adv_flags = flags; 1725 memcpy(d->last_adv_data, data, len); 1726 d->last_adv_data_len = len; 1727 } 1728 1729 static void le_set_scan_enable_complete(struct hci_dev *hdev, u8 enable) 1730 { 1731 hci_dev_lock(hdev); 1732 1733 switch (enable) { 1734 case LE_SCAN_ENABLE: 1735 hci_dev_set_flag(hdev, HCI_LE_SCAN); 1736 if (hdev->le_scan_type == LE_SCAN_ACTIVE) { 1737 clear_pending_adv_report(hdev); 1738 hci_discovery_set_state(hdev, DISCOVERY_FINDING); 1739 } 1740 break; 1741 1742 case LE_SCAN_DISABLE: 1743 /* We do this here instead of when setting DISCOVERY_STOPPED 1744 * since the latter would potentially require waiting for 1745 * inquiry to stop too. 1746 */ 1747 if (has_pending_adv_report(hdev)) { 1748 struct discovery_state *d = &hdev->discovery; 1749 1750 mgmt_device_found(hdev, &d->last_adv_addr, LE_LINK, 1751 d->last_adv_addr_type, NULL, 1752 d->last_adv_rssi, d->last_adv_flags, 1753 d->last_adv_data, 1754 d->last_adv_data_len, NULL, 0, 0); 1755 } 1756 1757 /* Cancel this timer so that we don't try to disable scanning 1758 * when it's already disabled. 1759 */ 1760 cancel_delayed_work(&hdev->le_scan_disable); 1761 1762 hci_dev_clear_flag(hdev, HCI_LE_SCAN); 1763 1764 /* The HCI_LE_SCAN_INTERRUPTED flag indicates that we 1765 * interrupted scanning due to a connect request. Mark 1766 * therefore discovery as stopped. 1767 */ 1768 if (hci_dev_test_and_clear_flag(hdev, HCI_LE_SCAN_INTERRUPTED)) 1769 hci_discovery_set_state(hdev, DISCOVERY_STOPPED); 1770 else if (!hci_dev_test_flag(hdev, HCI_LE_ADV) && 1771 hdev->discovery.state == DISCOVERY_FINDING) 1772 queue_work(hdev->workqueue, &hdev->reenable_adv_work); 1773 1774 break; 1775 1776 default: 1777 bt_dev_err(hdev, "use of reserved LE_Scan_Enable param %d", 1778 enable); 1779 break; 1780 } 1781 1782 hci_dev_unlock(hdev); 1783 } 1784 1785 static u8 hci_cc_le_set_scan_enable(struct hci_dev *hdev, void *data, 1786 struct sk_buff *skb) 1787 { 1788 struct hci_cp_le_set_scan_enable *cp; 1789 struct hci_ev_status *rp = data; 1790 1791 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1792 1793 if (rp->status) 1794 return rp->status; 1795 1796 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_SCAN_ENABLE); 1797 if (!cp) 1798 return rp->status; 1799 1800 le_set_scan_enable_complete(hdev, cp->enable); 1801 1802 return rp->status; 1803 } 1804 1805 static u8 hci_cc_le_set_ext_scan_enable(struct hci_dev *hdev, void *data, 1806 struct sk_buff *skb) 1807 { 1808 struct hci_cp_le_set_ext_scan_enable *cp; 1809 struct hci_ev_status *rp = data; 1810 1811 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1812 1813 if (rp->status) 1814 return rp->status; 1815 1816 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_EXT_SCAN_ENABLE); 1817 if (!cp) 1818 return rp->status; 1819 1820 le_set_scan_enable_complete(hdev, cp->enable); 1821 1822 return rp->status; 1823 } 1824 1825 static u8 hci_cc_le_read_num_adv_sets(struct hci_dev *hdev, void *data, 1826 struct sk_buff *skb) 1827 { 1828 struct hci_rp_le_read_num_supported_adv_sets *rp = data; 1829 1830 bt_dev_dbg(hdev, "status 0x%2.2x No of Adv sets %u", rp->status, 1831 rp->num_of_sets); 1832 1833 if (rp->status) 1834 return rp->status; 1835 1836 hdev->le_num_of_adv_sets = rp->num_of_sets; 1837 1838 return rp->status; 1839 } 1840 1841 static u8 hci_cc_le_read_accept_list_size(struct hci_dev *hdev, void *data, 1842 struct sk_buff *skb) 1843 { 1844 struct hci_rp_le_read_accept_list_size *rp = data; 1845 1846 bt_dev_dbg(hdev, "status 0x%2.2x size %u", rp->status, rp->size); 1847 1848 if (rp->status) 1849 return rp->status; 1850 1851 hdev->le_accept_list_size = rp->size; 1852 1853 return rp->status; 1854 } 1855 1856 static u8 hci_cc_le_clear_accept_list(struct hci_dev *hdev, void *data, 1857 struct sk_buff *skb) 1858 { 1859 struct hci_ev_status *rp = data; 1860 1861 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1862 1863 if (rp->status) 1864 return rp->status; 1865 1866 hci_dev_lock(hdev); 1867 hci_bdaddr_list_clear(&hdev->le_accept_list); 1868 hci_dev_unlock(hdev); 1869 1870 return rp->status; 1871 } 1872 1873 static u8 hci_cc_le_add_to_accept_list(struct hci_dev *hdev, void *data, 1874 struct sk_buff *skb) 1875 { 1876 struct hci_cp_le_add_to_accept_list *sent; 1877 struct hci_ev_status *rp = data; 1878 1879 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1880 1881 if (rp->status) 1882 return rp->status; 1883 1884 sent = hci_sent_cmd_data(hdev, HCI_OP_LE_ADD_TO_ACCEPT_LIST); 1885 if (!sent) 1886 return rp->status; 1887 1888 hci_dev_lock(hdev); 1889 hci_bdaddr_list_add(&hdev->le_accept_list, &sent->bdaddr, 1890 sent->bdaddr_type); 1891 hci_dev_unlock(hdev); 1892 1893 return rp->status; 1894 } 1895 1896 static u8 hci_cc_le_del_from_accept_list(struct hci_dev *hdev, void *data, 1897 struct sk_buff *skb) 1898 { 1899 struct hci_cp_le_del_from_accept_list *sent; 1900 struct hci_ev_status *rp = data; 1901 1902 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1903 1904 if (rp->status) 1905 return rp->status; 1906 1907 sent = hci_sent_cmd_data(hdev, HCI_OP_LE_DEL_FROM_ACCEPT_LIST); 1908 if (!sent) 1909 return rp->status; 1910 1911 hci_dev_lock(hdev); 1912 hci_bdaddr_list_del(&hdev->le_accept_list, &sent->bdaddr, 1913 sent->bdaddr_type); 1914 hci_dev_unlock(hdev); 1915 1916 return rp->status; 1917 } 1918 1919 static u8 hci_cc_le_read_supported_states(struct hci_dev *hdev, void *data, 1920 struct sk_buff *skb) 1921 { 1922 struct hci_rp_le_read_supported_states *rp = data; 1923 1924 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1925 1926 if (rp->status) 1927 return rp->status; 1928 1929 memcpy(hdev->le_states, rp->le_states, 8); 1930 1931 return rp->status; 1932 } 1933 1934 static u8 hci_cc_le_read_def_data_len(struct hci_dev *hdev, void *data, 1935 struct sk_buff *skb) 1936 { 1937 struct hci_rp_le_read_def_data_len *rp = data; 1938 1939 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1940 1941 if (rp->status) 1942 return rp->status; 1943 1944 hdev->le_def_tx_len = le16_to_cpu(rp->tx_len); 1945 hdev->le_def_tx_time = le16_to_cpu(rp->tx_time); 1946 1947 return rp->status; 1948 } 1949 1950 static u8 hci_cc_le_write_def_data_len(struct hci_dev *hdev, void *data, 1951 struct sk_buff *skb) 1952 { 1953 struct hci_cp_le_write_def_data_len *sent; 1954 struct hci_ev_status *rp = data; 1955 1956 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1957 1958 if (rp->status) 1959 return rp->status; 1960 1961 sent = hci_sent_cmd_data(hdev, HCI_OP_LE_WRITE_DEF_DATA_LEN); 1962 if (!sent) 1963 return rp->status; 1964 1965 hdev->le_def_tx_len = le16_to_cpu(sent->tx_len); 1966 hdev->le_def_tx_time = le16_to_cpu(sent->tx_time); 1967 1968 return rp->status; 1969 } 1970 1971 static u8 hci_cc_le_add_to_resolv_list(struct hci_dev *hdev, void *data, 1972 struct sk_buff *skb) 1973 { 1974 struct hci_cp_le_add_to_resolv_list *sent; 1975 struct hci_ev_status *rp = data; 1976 1977 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1978 1979 if (rp->status) 1980 return rp->status; 1981 1982 sent = hci_sent_cmd_data(hdev, HCI_OP_LE_ADD_TO_RESOLV_LIST); 1983 if (!sent) 1984 return rp->status; 1985 1986 hci_dev_lock(hdev); 1987 hci_bdaddr_list_add_with_irk(&hdev->le_resolv_list, &sent->bdaddr, 1988 sent->bdaddr_type, sent->peer_irk, 1989 sent->local_irk); 1990 hci_dev_unlock(hdev); 1991 1992 return rp->status; 1993 } 1994 1995 static u8 hci_cc_le_del_from_resolv_list(struct hci_dev *hdev, void *data, 1996 struct sk_buff *skb) 1997 { 1998 struct hci_cp_le_del_from_resolv_list *sent; 1999 struct hci_ev_status *rp = data; 2000 2001 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 2002 2003 if (rp->status) 2004 return rp->status; 2005 2006 sent = hci_sent_cmd_data(hdev, HCI_OP_LE_DEL_FROM_RESOLV_LIST); 2007 if (!sent) 2008 return rp->status; 2009 2010 hci_dev_lock(hdev); 2011 hci_bdaddr_list_del_with_irk(&hdev->le_resolv_list, &sent->bdaddr, 2012 sent->bdaddr_type); 2013 hci_dev_unlock(hdev); 2014 2015 return rp->status; 2016 } 2017 2018 static u8 hci_cc_le_clear_resolv_list(struct hci_dev *hdev, void *data, 2019 struct sk_buff *skb) 2020 { 2021 struct hci_ev_status *rp = data; 2022 2023 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 2024 2025 if (rp->status) 2026 return rp->status; 2027 2028 hci_dev_lock(hdev); 2029 hci_bdaddr_list_clear(&hdev->le_resolv_list); 2030 hci_dev_unlock(hdev); 2031 2032 return rp->status; 2033 } 2034 2035 static u8 hci_cc_le_read_resolv_list_size(struct hci_dev *hdev, void *data, 2036 struct sk_buff *skb) 2037 { 2038 struct hci_rp_le_read_resolv_list_size *rp = data; 2039 2040 bt_dev_dbg(hdev, "status 0x%2.2x size %u", rp->status, rp->size); 2041 2042 if (rp->status) 2043 return rp->status; 2044 2045 hdev->le_resolv_list_size = rp->size; 2046 2047 return rp->status; 2048 } 2049 2050 static u8 hci_cc_le_set_addr_resolution_enable(struct hci_dev *hdev, void *data, 2051 struct sk_buff *skb) 2052 { 2053 struct hci_ev_status *rp = data; 2054 __u8 *sent; 2055 2056 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 2057 2058 if (rp->status) 2059 return rp->status; 2060 2061 sent = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_ADDR_RESOLV_ENABLE); 2062 if (!sent) 2063 return rp->status; 2064 2065 hci_dev_lock(hdev); 2066 2067 if (*sent) 2068 hci_dev_set_flag(hdev, HCI_LL_RPA_RESOLUTION); 2069 else 2070 hci_dev_clear_flag(hdev, HCI_LL_RPA_RESOLUTION); 2071 2072 hci_dev_unlock(hdev); 2073 2074 return rp->status; 2075 } 2076 2077 static u8 hci_cc_le_read_max_data_len(struct hci_dev *hdev, void *data, 2078 struct sk_buff *skb) 2079 { 2080 struct hci_rp_le_read_max_data_len *rp = data; 2081 2082 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 2083 2084 if (rp->status) 2085 return rp->status; 2086 2087 hdev->le_max_tx_len = le16_to_cpu(rp->tx_len); 2088 hdev->le_max_tx_time = le16_to_cpu(rp->tx_time); 2089 hdev->le_max_rx_len = le16_to_cpu(rp->rx_len); 2090 hdev->le_max_rx_time = le16_to_cpu(rp->rx_time); 2091 2092 return rp->status; 2093 } 2094 2095 static u8 hci_cc_write_le_host_supported(struct hci_dev *hdev, void *data, 2096 struct sk_buff *skb) 2097 { 2098 struct hci_cp_write_le_host_supported *sent; 2099 struct hci_ev_status *rp = data; 2100 2101 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 2102 2103 if (rp->status) 2104 return rp->status; 2105 2106 sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_LE_HOST_SUPPORTED); 2107 if (!sent) 2108 return rp->status; 2109 2110 hci_dev_lock(hdev); 2111 2112 if (sent->le) { 2113 hdev->features[1][0] |= LMP_HOST_LE; 2114 hci_dev_set_flag(hdev, HCI_LE_ENABLED); 2115 } else { 2116 hdev->features[1][0] &= ~LMP_HOST_LE; 2117 hci_dev_clear_flag(hdev, HCI_LE_ENABLED); 2118 hci_dev_clear_flag(hdev, HCI_ADVERTISING); 2119 } 2120 2121 if (sent->simul) 2122 hdev->features[1][0] |= LMP_HOST_LE_BREDR; 2123 else 2124 hdev->features[1][0] &= ~LMP_HOST_LE_BREDR; 2125 2126 hci_dev_unlock(hdev); 2127 2128 return rp->status; 2129 } 2130 2131 static u8 hci_cc_set_adv_param(struct hci_dev *hdev, void *data, 2132 struct sk_buff *skb) 2133 { 2134 struct hci_cp_le_set_adv_param *cp; 2135 struct hci_ev_status *rp = data; 2136 2137 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 2138 2139 if (rp->status) 2140 return rp->status; 2141 2142 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_ADV_PARAM); 2143 if (!cp) 2144 return rp->status; 2145 2146 hci_dev_lock(hdev); 2147 hdev->adv_addr_type = cp->own_address_type; 2148 hci_dev_unlock(hdev); 2149 2150 return rp->status; 2151 } 2152 2153 static u8 hci_cc_set_ext_adv_param(struct hci_dev *hdev, void *data, 2154 struct sk_buff *skb) 2155 { 2156 struct hci_rp_le_set_ext_adv_params *rp = data; 2157 struct hci_cp_le_set_ext_adv_params *cp; 2158 struct adv_info *adv_instance; 2159 2160 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 2161 2162 if (rp->status) 2163 return rp->status; 2164 2165 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_EXT_ADV_PARAMS); 2166 if (!cp) 2167 return rp->status; 2168 2169 hci_dev_lock(hdev); 2170 hdev->adv_addr_type = cp->own_addr_type; 2171 if (!cp->handle) { 2172 /* Store in hdev for instance 0 */ 2173 hdev->adv_tx_power = rp->tx_power; 2174 } else { 2175 adv_instance = hci_find_adv_instance(hdev, cp->handle); 2176 if (adv_instance) 2177 adv_instance->tx_power = rp->tx_power; 2178 } 2179 /* Update adv data as tx power is known now */ 2180 hci_update_adv_data(hdev, cp->handle); 2181 2182 hci_dev_unlock(hdev); 2183 2184 return rp->status; 2185 } 2186 2187 static u8 hci_cc_read_rssi(struct hci_dev *hdev, void *data, 2188 struct sk_buff *skb) 2189 { 2190 struct hci_rp_read_rssi *rp = data; 2191 struct hci_conn *conn; 2192 2193 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 2194 2195 if (rp->status) 2196 return rp->status; 2197 2198 hci_dev_lock(hdev); 2199 2200 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(rp->handle)); 2201 if (conn) 2202 conn->rssi = rp->rssi; 2203 2204 hci_dev_unlock(hdev); 2205 2206 return rp->status; 2207 } 2208 2209 static u8 hci_cc_read_tx_power(struct hci_dev *hdev, void *data, 2210 struct sk_buff *skb) 2211 { 2212 struct hci_cp_read_tx_power *sent; 2213 struct hci_rp_read_tx_power *rp = data; 2214 struct hci_conn *conn; 2215 2216 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 2217 2218 if (rp->status) 2219 return rp->status; 2220 2221 sent = hci_sent_cmd_data(hdev, HCI_OP_READ_TX_POWER); 2222 if (!sent) 2223 return rp->status; 2224 2225 hci_dev_lock(hdev); 2226 2227 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(rp->handle)); 2228 if (!conn) 2229 goto unlock; 2230 2231 switch (sent->type) { 2232 case 0x00: 2233 conn->tx_power = rp->tx_power; 2234 break; 2235 case 0x01: 2236 conn->max_tx_power = rp->tx_power; 2237 break; 2238 } 2239 2240 unlock: 2241 hci_dev_unlock(hdev); 2242 return rp->status; 2243 } 2244 2245 static u8 hci_cc_write_ssp_debug_mode(struct hci_dev *hdev, void *data, 2246 struct sk_buff *skb) 2247 { 2248 struct hci_ev_status *rp = data; 2249 u8 *mode; 2250 2251 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 2252 2253 if (rp->status) 2254 return rp->status; 2255 2256 mode = hci_sent_cmd_data(hdev, HCI_OP_WRITE_SSP_DEBUG_MODE); 2257 if (mode) 2258 hdev->ssp_debug_mode = *mode; 2259 2260 return rp->status; 2261 } 2262 2263 static void hci_cs_inquiry(struct hci_dev *hdev, __u8 status) 2264 { 2265 bt_dev_dbg(hdev, "status 0x%2.2x", status); 2266 2267 if (status) 2268 return; 2269 2270 if (hci_sent_cmd_data(hdev, HCI_OP_INQUIRY)) 2271 set_bit(HCI_INQUIRY, &hdev->flags); 2272 } 2273 2274 static void hci_cs_create_conn(struct hci_dev *hdev, __u8 status) 2275 { 2276 struct hci_cp_create_conn *cp; 2277 struct hci_conn *conn; 2278 2279 bt_dev_dbg(hdev, "status 0x%2.2x", status); 2280 2281 cp = hci_sent_cmd_data(hdev, HCI_OP_CREATE_CONN); 2282 if (!cp) 2283 return; 2284 2285 hci_dev_lock(hdev); 2286 2287 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &cp->bdaddr); 2288 2289 bt_dev_dbg(hdev, "bdaddr %pMR hcon %p", &cp->bdaddr, conn); 2290 2291 if (status) { 2292 if (conn && conn->state == BT_CONNECT) { 2293 conn->state = BT_CLOSED; 2294 hci_connect_cfm(conn, status); 2295 hci_conn_del(conn); 2296 } 2297 } else { 2298 if (!conn) { 2299 conn = hci_conn_add_unset(hdev, ACL_LINK, &cp->bdaddr, 2300 HCI_ROLE_MASTER); 2301 if (IS_ERR(conn)) 2302 bt_dev_err(hdev, "connection err: %ld", PTR_ERR(conn)); 2303 } 2304 } 2305 2306 hci_dev_unlock(hdev); 2307 } 2308 2309 static void hci_cs_add_sco(struct hci_dev *hdev, __u8 status) 2310 { 2311 struct hci_cp_add_sco *cp; 2312 struct hci_conn *acl; 2313 struct hci_link *link; 2314 __u16 handle; 2315 2316 bt_dev_dbg(hdev, "status 0x%2.2x", status); 2317 2318 if (!status) 2319 return; 2320 2321 cp = hci_sent_cmd_data(hdev, HCI_OP_ADD_SCO); 2322 if (!cp) 2323 return; 2324 2325 handle = __le16_to_cpu(cp->handle); 2326 2327 bt_dev_dbg(hdev, "handle 0x%4.4x", handle); 2328 2329 hci_dev_lock(hdev); 2330 2331 acl = hci_conn_hash_lookup_handle(hdev, handle); 2332 if (acl) { 2333 link = list_first_entry_or_null(&acl->link_list, 2334 struct hci_link, list); 2335 if (link && link->conn) { 2336 link->conn->state = BT_CLOSED; 2337 2338 hci_connect_cfm(link->conn, status); 2339 hci_conn_del(link->conn); 2340 } 2341 } 2342 2343 hci_dev_unlock(hdev); 2344 } 2345 2346 static void hci_cs_auth_requested(struct hci_dev *hdev, __u8 status) 2347 { 2348 struct hci_cp_auth_requested *cp; 2349 struct hci_conn *conn; 2350 2351 bt_dev_dbg(hdev, "status 0x%2.2x", status); 2352 2353 if (!status) 2354 return; 2355 2356 cp = hci_sent_cmd_data(hdev, HCI_OP_AUTH_REQUESTED); 2357 if (!cp) 2358 return; 2359 2360 hci_dev_lock(hdev); 2361 2362 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle)); 2363 if (conn) { 2364 if (conn->state == BT_CONFIG) { 2365 hci_connect_cfm(conn, status); 2366 hci_conn_drop(conn); 2367 } 2368 } 2369 2370 hci_dev_unlock(hdev); 2371 } 2372 2373 static void hci_cs_set_conn_encrypt(struct hci_dev *hdev, __u8 status) 2374 { 2375 struct hci_cp_set_conn_encrypt *cp; 2376 struct hci_conn *conn; 2377 2378 bt_dev_dbg(hdev, "status 0x%2.2x", status); 2379 2380 if (!status) 2381 return; 2382 2383 cp = hci_sent_cmd_data(hdev, HCI_OP_SET_CONN_ENCRYPT); 2384 if (!cp) 2385 return; 2386 2387 hci_dev_lock(hdev); 2388 2389 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle)); 2390 if (conn) { 2391 if (conn->state == BT_CONFIG) { 2392 hci_connect_cfm(conn, status); 2393 hci_conn_drop(conn); 2394 } 2395 } 2396 2397 hci_dev_unlock(hdev); 2398 } 2399 2400 static int hci_outgoing_auth_needed(struct hci_dev *hdev, 2401 struct hci_conn *conn) 2402 { 2403 if (conn->state != BT_CONFIG || !conn->out) 2404 return 0; 2405 2406 if (conn->pending_sec_level == BT_SECURITY_SDP) 2407 return 0; 2408 2409 /* Only request authentication for SSP connections or non-SSP 2410 * devices with sec_level MEDIUM or HIGH or if MITM protection 2411 * is requested. 2412 */ 2413 if (!hci_conn_ssp_enabled(conn) && !(conn->auth_type & 0x01) && 2414 conn->pending_sec_level != BT_SECURITY_FIPS && 2415 conn->pending_sec_level != BT_SECURITY_HIGH && 2416 conn->pending_sec_level != BT_SECURITY_MEDIUM) 2417 return 0; 2418 2419 return 1; 2420 } 2421 2422 static int hci_resolve_name(struct hci_dev *hdev, 2423 struct inquiry_entry *e) 2424 { 2425 struct hci_cp_remote_name_req cp; 2426 2427 memset(&cp, 0, sizeof(cp)); 2428 2429 bacpy(&cp.bdaddr, &e->data.bdaddr); 2430 cp.pscan_rep_mode = e->data.pscan_rep_mode; 2431 cp.pscan_mode = e->data.pscan_mode; 2432 cp.clock_offset = e->data.clock_offset; 2433 2434 return hci_send_cmd(hdev, HCI_OP_REMOTE_NAME_REQ, sizeof(cp), &cp); 2435 } 2436 2437 static bool hci_resolve_next_name(struct hci_dev *hdev) 2438 { 2439 struct discovery_state *discov = &hdev->discovery; 2440 struct inquiry_entry *e; 2441 2442 if (list_empty(&discov->resolve)) 2443 return false; 2444 2445 /* We should stop if we already spent too much time resolving names. */ 2446 if (time_after(jiffies, discov->name_resolve_timeout)) { 2447 bt_dev_warn_ratelimited(hdev, "Name resolve takes too long."); 2448 return false; 2449 } 2450 2451 e = hci_inquiry_cache_lookup_resolve(hdev, BDADDR_ANY, NAME_NEEDED); 2452 if (!e) 2453 return false; 2454 2455 if (hci_resolve_name(hdev, e) == 0) { 2456 e->name_state = NAME_PENDING; 2457 return true; 2458 } 2459 2460 return false; 2461 } 2462 2463 static void hci_check_pending_name(struct hci_dev *hdev, struct hci_conn *conn, 2464 bdaddr_t *bdaddr, u8 *name, u8 name_len) 2465 { 2466 struct discovery_state *discov = &hdev->discovery; 2467 struct inquiry_entry *e; 2468 2469 /* Update the mgmt connected state if necessary. Be careful with 2470 * conn objects that exist but are not (yet) connected however. 2471 * Only those in BT_CONFIG or BT_CONNECTED states can be 2472 * considered connected. 2473 */ 2474 if (conn && (conn->state == BT_CONFIG || conn->state == BT_CONNECTED)) 2475 mgmt_device_connected(hdev, conn, name, name_len); 2476 2477 if (discov->state == DISCOVERY_STOPPED) 2478 return; 2479 2480 if (discov->state == DISCOVERY_STOPPING) 2481 goto discov_complete; 2482 2483 if (discov->state != DISCOVERY_RESOLVING) 2484 return; 2485 2486 e = hci_inquiry_cache_lookup_resolve(hdev, bdaddr, NAME_PENDING); 2487 /* If the device was not found in a list of found devices names of which 2488 * are pending. there is no need to continue resolving a next name as it 2489 * will be done upon receiving another Remote Name Request Complete 2490 * Event */ 2491 if (!e) 2492 return; 2493 2494 list_del(&e->list); 2495 2496 e->name_state = name ? NAME_KNOWN : NAME_NOT_KNOWN; 2497 mgmt_remote_name(hdev, bdaddr, ACL_LINK, 0x00, e->data.rssi, 2498 name, name_len); 2499 2500 if (hci_resolve_next_name(hdev)) 2501 return; 2502 2503 discov_complete: 2504 hci_discovery_set_state(hdev, DISCOVERY_STOPPED); 2505 } 2506 2507 static void hci_cs_remote_name_req(struct hci_dev *hdev, __u8 status) 2508 { 2509 struct hci_cp_remote_name_req *cp; 2510 struct hci_conn *conn; 2511 2512 bt_dev_dbg(hdev, "status 0x%2.2x", status); 2513 2514 /* If successful wait for the name req complete event before 2515 * checking for the need to do authentication */ 2516 if (!status) 2517 return; 2518 2519 cp = hci_sent_cmd_data(hdev, HCI_OP_REMOTE_NAME_REQ); 2520 if (!cp) 2521 return; 2522 2523 hci_dev_lock(hdev); 2524 2525 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &cp->bdaddr); 2526 2527 if (hci_dev_test_flag(hdev, HCI_MGMT)) 2528 hci_check_pending_name(hdev, conn, &cp->bdaddr, NULL, 0); 2529 2530 if (!conn) 2531 goto unlock; 2532 2533 if (!hci_outgoing_auth_needed(hdev, conn)) 2534 goto unlock; 2535 2536 if (!test_and_set_bit(HCI_CONN_AUTH_PEND, &conn->flags)) { 2537 struct hci_cp_auth_requested auth_cp; 2538 2539 set_bit(HCI_CONN_AUTH_INITIATOR, &conn->flags); 2540 2541 auth_cp.handle = __cpu_to_le16(conn->handle); 2542 hci_send_cmd(hdev, HCI_OP_AUTH_REQUESTED, 2543 sizeof(auth_cp), &auth_cp); 2544 } 2545 2546 unlock: 2547 hci_dev_unlock(hdev); 2548 } 2549 2550 static void hci_cs_read_remote_features(struct hci_dev *hdev, __u8 status) 2551 { 2552 struct hci_cp_read_remote_features *cp; 2553 struct hci_conn *conn; 2554 2555 bt_dev_dbg(hdev, "status 0x%2.2x", status); 2556 2557 if (!status) 2558 return; 2559 2560 cp = hci_sent_cmd_data(hdev, HCI_OP_READ_REMOTE_FEATURES); 2561 if (!cp) 2562 return; 2563 2564 hci_dev_lock(hdev); 2565 2566 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle)); 2567 if (conn) { 2568 if (conn->state == BT_CONFIG) { 2569 hci_connect_cfm(conn, status); 2570 hci_conn_drop(conn); 2571 } 2572 } 2573 2574 hci_dev_unlock(hdev); 2575 } 2576 2577 static void hci_cs_read_remote_ext_features(struct hci_dev *hdev, __u8 status) 2578 { 2579 struct hci_cp_read_remote_ext_features *cp; 2580 struct hci_conn *conn; 2581 2582 bt_dev_dbg(hdev, "status 0x%2.2x", status); 2583 2584 if (!status) 2585 return; 2586 2587 cp = hci_sent_cmd_data(hdev, HCI_OP_READ_REMOTE_EXT_FEATURES); 2588 if (!cp) 2589 return; 2590 2591 hci_dev_lock(hdev); 2592 2593 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle)); 2594 if (conn) { 2595 if (conn->state == BT_CONFIG) { 2596 hci_connect_cfm(conn, status); 2597 hci_conn_drop(conn); 2598 } 2599 } 2600 2601 hci_dev_unlock(hdev); 2602 } 2603 2604 static void hci_setup_sync_conn_status(struct hci_dev *hdev, __u16 handle, 2605 __u8 status) 2606 { 2607 struct hci_conn *acl; 2608 struct hci_link *link; 2609 2610 bt_dev_dbg(hdev, "handle 0x%4.4x status 0x%2.2x", handle, status); 2611 2612 hci_dev_lock(hdev); 2613 2614 acl = hci_conn_hash_lookup_handle(hdev, handle); 2615 if (acl) { 2616 link = list_first_entry_or_null(&acl->link_list, 2617 struct hci_link, list); 2618 if (link && link->conn) { 2619 link->conn->state = BT_CLOSED; 2620 2621 hci_connect_cfm(link->conn, status); 2622 hci_conn_del(link->conn); 2623 } 2624 } 2625 2626 hci_dev_unlock(hdev); 2627 } 2628 2629 static void hci_cs_setup_sync_conn(struct hci_dev *hdev, __u8 status) 2630 { 2631 struct hci_cp_setup_sync_conn *cp; 2632 2633 bt_dev_dbg(hdev, "status 0x%2.2x", status); 2634 2635 if (!status) 2636 return; 2637 2638 cp = hci_sent_cmd_data(hdev, HCI_OP_SETUP_SYNC_CONN); 2639 if (!cp) 2640 return; 2641 2642 hci_setup_sync_conn_status(hdev, __le16_to_cpu(cp->handle), status); 2643 } 2644 2645 static void hci_cs_enhanced_setup_sync_conn(struct hci_dev *hdev, __u8 status) 2646 { 2647 struct hci_cp_enhanced_setup_sync_conn *cp; 2648 2649 bt_dev_dbg(hdev, "status 0x%2.2x", status); 2650 2651 if (!status) 2652 return; 2653 2654 cp = hci_sent_cmd_data(hdev, HCI_OP_ENHANCED_SETUP_SYNC_CONN); 2655 if (!cp) 2656 return; 2657 2658 hci_setup_sync_conn_status(hdev, __le16_to_cpu(cp->handle), status); 2659 } 2660 2661 static void hci_cs_sniff_mode(struct hci_dev *hdev, __u8 status) 2662 { 2663 struct hci_cp_sniff_mode *cp; 2664 struct hci_conn *conn; 2665 2666 bt_dev_dbg(hdev, "status 0x%2.2x", status); 2667 2668 if (!status) 2669 return; 2670 2671 cp = hci_sent_cmd_data(hdev, HCI_OP_SNIFF_MODE); 2672 if (!cp) 2673 return; 2674 2675 hci_dev_lock(hdev); 2676 2677 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle)); 2678 if (conn) { 2679 clear_bit(HCI_CONN_MODE_CHANGE_PEND, &conn->flags); 2680 2681 if (test_and_clear_bit(HCI_CONN_SCO_SETUP_PEND, &conn->flags)) 2682 hci_sco_setup(conn, status); 2683 } 2684 2685 hci_dev_unlock(hdev); 2686 } 2687 2688 static void hci_cs_exit_sniff_mode(struct hci_dev *hdev, __u8 status) 2689 { 2690 struct hci_cp_exit_sniff_mode *cp; 2691 struct hci_conn *conn; 2692 2693 bt_dev_dbg(hdev, "status 0x%2.2x", status); 2694 2695 if (!status) 2696 return; 2697 2698 cp = hci_sent_cmd_data(hdev, HCI_OP_EXIT_SNIFF_MODE); 2699 if (!cp) 2700 return; 2701 2702 hci_dev_lock(hdev); 2703 2704 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle)); 2705 if (conn) { 2706 clear_bit(HCI_CONN_MODE_CHANGE_PEND, &conn->flags); 2707 2708 if (test_and_clear_bit(HCI_CONN_SCO_SETUP_PEND, &conn->flags)) 2709 hci_sco_setup(conn, status); 2710 } 2711 2712 hci_dev_unlock(hdev); 2713 } 2714 2715 static void hci_cs_disconnect(struct hci_dev *hdev, u8 status) 2716 { 2717 struct hci_cp_disconnect *cp; 2718 struct hci_conn_params *params; 2719 struct hci_conn *conn; 2720 bool mgmt_conn; 2721 2722 bt_dev_dbg(hdev, "status 0x%2.2x", status); 2723 2724 /* Wait for HCI_EV_DISCONN_COMPLETE if status 0x00 and not suspended 2725 * otherwise cleanup the connection immediately. 2726 */ 2727 if (!status && !hdev->suspended) 2728 return; 2729 2730 cp = hci_sent_cmd_data(hdev, HCI_OP_DISCONNECT); 2731 if (!cp) 2732 return; 2733 2734 hci_dev_lock(hdev); 2735 2736 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle)); 2737 if (!conn) 2738 goto unlock; 2739 2740 if (status) { 2741 mgmt_disconnect_failed(hdev, &conn->dst, conn->type, 2742 conn->dst_type, status); 2743 2744 if (conn->type == LE_LINK && conn->role == HCI_ROLE_SLAVE) { 2745 hdev->cur_adv_instance = conn->adv_instance; 2746 hci_enable_advertising(hdev); 2747 } 2748 2749 /* Inform sockets conn is gone before we delete it */ 2750 hci_disconn_cfm(conn, HCI_ERROR_UNSPECIFIED); 2751 2752 goto done; 2753 } 2754 2755 mgmt_conn = test_and_clear_bit(HCI_CONN_MGMT_CONNECTED, &conn->flags); 2756 2757 if (conn->type == ACL_LINK) { 2758 if (test_and_clear_bit(HCI_CONN_FLUSH_KEY, &conn->flags)) 2759 hci_remove_link_key(hdev, &conn->dst); 2760 } 2761 2762 params = hci_conn_params_lookup(hdev, &conn->dst, conn->dst_type); 2763 if (params) { 2764 switch (params->auto_connect) { 2765 case HCI_AUTO_CONN_LINK_LOSS: 2766 if (cp->reason != HCI_ERROR_CONNECTION_TIMEOUT) 2767 break; 2768 fallthrough; 2769 2770 case HCI_AUTO_CONN_DIRECT: 2771 case HCI_AUTO_CONN_ALWAYS: 2772 hci_pend_le_list_del_init(params); 2773 hci_pend_le_list_add(params, &hdev->pend_le_conns); 2774 break; 2775 2776 default: 2777 break; 2778 } 2779 } 2780 2781 mgmt_device_disconnected(hdev, &conn->dst, conn->type, conn->dst_type, 2782 cp->reason, mgmt_conn); 2783 2784 hci_disconn_cfm(conn, cp->reason); 2785 2786 done: 2787 /* If the disconnection failed for any reason, the upper layer 2788 * does not retry to disconnect in current implementation. 2789 * Hence, we need to do some basic cleanup here and re-enable 2790 * advertising if necessary. 2791 */ 2792 hci_conn_del(conn); 2793 unlock: 2794 hci_dev_unlock(hdev); 2795 } 2796 2797 static u8 ev_bdaddr_type(struct hci_dev *hdev, u8 type, bool *resolved) 2798 { 2799 /* When using controller based address resolution, then the new 2800 * address types 0x02 and 0x03 are used. These types need to be 2801 * converted back into either public address or random address type 2802 */ 2803 switch (type) { 2804 case ADDR_LE_DEV_PUBLIC_RESOLVED: 2805 if (resolved) 2806 *resolved = true; 2807 return ADDR_LE_DEV_PUBLIC; 2808 case ADDR_LE_DEV_RANDOM_RESOLVED: 2809 if (resolved) 2810 *resolved = true; 2811 return ADDR_LE_DEV_RANDOM; 2812 } 2813 2814 if (resolved) 2815 *resolved = false; 2816 return type; 2817 } 2818 2819 static void cs_le_create_conn(struct hci_dev *hdev, bdaddr_t *peer_addr, 2820 u8 peer_addr_type, u8 own_address_type, 2821 u8 filter_policy) 2822 { 2823 struct hci_conn *conn; 2824 2825 conn = hci_conn_hash_lookup_le(hdev, peer_addr, 2826 peer_addr_type); 2827 if (!conn) 2828 return; 2829 2830 own_address_type = ev_bdaddr_type(hdev, own_address_type, NULL); 2831 2832 /* Store the initiator and responder address information which 2833 * is needed for SMP. These values will not change during the 2834 * lifetime of the connection. 2835 */ 2836 conn->init_addr_type = own_address_type; 2837 if (own_address_type == ADDR_LE_DEV_RANDOM) 2838 bacpy(&conn->init_addr, &hdev->random_addr); 2839 else 2840 bacpy(&conn->init_addr, &hdev->bdaddr); 2841 2842 conn->resp_addr_type = peer_addr_type; 2843 bacpy(&conn->resp_addr, peer_addr); 2844 } 2845 2846 static void hci_cs_le_create_conn(struct hci_dev *hdev, u8 status) 2847 { 2848 struct hci_cp_le_create_conn *cp; 2849 2850 bt_dev_dbg(hdev, "status 0x%2.2x", status); 2851 2852 /* All connection failure handling is taken care of by the 2853 * hci_conn_failed function which is triggered by the HCI 2854 * request completion callbacks used for connecting. 2855 */ 2856 if (status) 2857 return; 2858 2859 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_CREATE_CONN); 2860 if (!cp) 2861 return; 2862 2863 hci_dev_lock(hdev); 2864 2865 cs_le_create_conn(hdev, &cp->peer_addr, cp->peer_addr_type, 2866 cp->own_address_type, cp->filter_policy); 2867 2868 hci_dev_unlock(hdev); 2869 } 2870 2871 static void hci_cs_le_ext_create_conn(struct hci_dev *hdev, u8 status) 2872 { 2873 struct hci_cp_le_ext_create_conn *cp; 2874 2875 bt_dev_dbg(hdev, "status 0x%2.2x", status); 2876 2877 /* All connection failure handling is taken care of by the 2878 * hci_conn_failed function which is triggered by the HCI 2879 * request completion callbacks used for connecting. 2880 */ 2881 if (status) 2882 return; 2883 2884 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_EXT_CREATE_CONN); 2885 if (!cp) 2886 return; 2887 2888 hci_dev_lock(hdev); 2889 2890 cs_le_create_conn(hdev, &cp->peer_addr, cp->peer_addr_type, 2891 cp->own_addr_type, cp->filter_policy); 2892 2893 hci_dev_unlock(hdev); 2894 } 2895 2896 static void hci_cs_le_read_remote_features(struct hci_dev *hdev, u8 status) 2897 { 2898 struct hci_cp_le_read_remote_features *cp; 2899 struct hci_conn *conn; 2900 2901 bt_dev_dbg(hdev, "status 0x%2.2x", status); 2902 2903 if (!status) 2904 return; 2905 2906 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_READ_REMOTE_FEATURES); 2907 if (!cp) 2908 return; 2909 2910 hci_dev_lock(hdev); 2911 2912 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle)); 2913 if (conn) { 2914 if (conn->state == BT_CONFIG) { 2915 hci_connect_cfm(conn, status); 2916 hci_conn_drop(conn); 2917 } 2918 } 2919 2920 hci_dev_unlock(hdev); 2921 } 2922 2923 static void hci_cs_le_start_enc(struct hci_dev *hdev, u8 status) 2924 { 2925 struct hci_cp_le_start_enc *cp; 2926 struct hci_conn *conn; 2927 2928 bt_dev_dbg(hdev, "status 0x%2.2x", status); 2929 2930 if (!status) 2931 return; 2932 2933 hci_dev_lock(hdev); 2934 2935 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_START_ENC); 2936 if (!cp) 2937 goto unlock; 2938 2939 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle)); 2940 if (!conn) 2941 goto unlock; 2942 2943 if (conn->state != BT_CONNECTED) 2944 goto unlock; 2945 2946 hci_disconnect(conn, HCI_ERROR_AUTH_FAILURE); 2947 hci_conn_drop(conn); 2948 2949 unlock: 2950 hci_dev_unlock(hdev); 2951 } 2952 2953 static void hci_cs_switch_role(struct hci_dev *hdev, u8 status) 2954 { 2955 struct hci_cp_switch_role *cp; 2956 struct hci_conn *conn; 2957 2958 BT_DBG("%s status 0x%2.2x", hdev->name, status); 2959 2960 if (!status) 2961 return; 2962 2963 cp = hci_sent_cmd_data(hdev, HCI_OP_SWITCH_ROLE); 2964 if (!cp) 2965 return; 2966 2967 hci_dev_lock(hdev); 2968 2969 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &cp->bdaddr); 2970 if (conn) 2971 clear_bit(HCI_CONN_RSWITCH_PEND, &conn->flags); 2972 2973 hci_dev_unlock(hdev); 2974 } 2975 2976 static void hci_inquiry_complete_evt(struct hci_dev *hdev, void *data, 2977 struct sk_buff *skb) 2978 { 2979 struct hci_ev_status *ev = data; 2980 struct discovery_state *discov = &hdev->discovery; 2981 struct inquiry_entry *e; 2982 2983 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 2984 2985 if (!test_and_clear_bit(HCI_INQUIRY, &hdev->flags)) 2986 return; 2987 2988 smp_mb__after_atomic(); /* wake_up_bit advises about this barrier */ 2989 wake_up_bit(&hdev->flags, HCI_INQUIRY); 2990 2991 if (!hci_dev_test_flag(hdev, HCI_MGMT)) 2992 return; 2993 2994 hci_dev_lock(hdev); 2995 2996 if (discov->state != DISCOVERY_FINDING) 2997 goto unlock; 2998 2999 if (list_empty(&discov->resolve)) { 3000 /* When BR/EDR inquiry is active and no LE scanning is in 3001 * progress, then change discovery state to indicate completion. 3002 * 3003 * When running LE scanning and BR/EDR inquiry simultaneously 3004 * and the LE scan already finished, then change the discovery 3005 * state to indicate completion. 3006 */ 3007 if (!hci_dev_test_flag(hdev, HCI_LE_SCAN) || 3008 !test_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks)) 3009 hci_discovery_set_state(hdev, DISCOVERY_STOPPED); 3010 goto unlock; 3011 } 3012 3013 e = hci_inquiry_cache_lookup_resolve(hdev, BDADDR_ANY, NAME_NEEDED); 3014 if (e && hci_resolve_name(hdev, e) == 0) { 3015 e->name_state = NAME_PENDING; 3016 hci_discovery_set_state(hdev, DISCOVERY_RESOLVING); 3017 discov->name_resolve_timeout = jiffies + NAME_RESOLVE_DURATION; 3018 } else { 3019 /* When BR/EDR inquiry is active and no LE scanning is in 3020 * progress, then change discovery state to indicate completion. 3021 * 3022 * When running LE scanning and BR/EDR inquiry simultaneously 3023 * and the LE scan already finished, then change the discovery 3024 * state to indicate completion. 3025 */ 3026 if (!hci_dev_test_flag(hdev, HCI_LE_SCAN) || 3027 !test_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks)) 3028 hci_discovery_set_state(hdev, DISCOVERY_STOPPED); 3029 } 3030 3031 unlock: 3032 hci_dev_unlock(hdev); 3033 } 3034 3035 static void hci_inquiry_result_evt(struct hci_dev *hdev, void *edata, 3036 struct sk_buff *skb) 3037 { 3038 struct hci_ev_inquiry_result *ev = edata; 3039 struct inquiry_data data; 3040 int i; 3041 3042 if (!hci_ev_skb_pull(hdev, skb, HCI_EV_INQUIRY_RESULT, 3043 flex_array_size(ev, info, ev->num))) 3044 return; 3045 3046 bt_dev_dbg(hdev, "num %d", ev->num); 3047 3048 if (!ev->num) 3049 return; 3050 3051 if (hci_dev_test_flag(hdev, HCI_PERIODIC_INQ)) 3052 return; 3053 3054 hci_dev_lock(hdev); 3055 3056 for (i = 0; i < ev->num; i++) { 3057 struct inquiry_info *info = &ev->info[i]; 3058 u32 flags; 3059 3060 bacpy(&data.bdaddr, &info->bdaddr); 3061 data.pscan_rep_mode = info->pscan_rep_mode; 3062 data.pscan_period_mode = info->pscan_period_mode; 3063 data.pscan_mode = info->pscan_mode; 3064 memcpy(data.dev_class, info->dev_class, 3); 3065 data.clock_offset = info->clock_offset; 3066 data.rssi = HCI_RSSI_INVALID; 3067 data.ssp_mode = 0x00; 3068 3069 flags = hci_inquiry_cache_update(hdev, &data, false); 3070 3071 mgmt_device_found(hdev, &info->bdaddr, ACL_LINK, 0x00, 3072 info->dev_class, HCI_RSSI_INVALID, 3073 flags, NULL, 0, NULL, 0, 0); 3074 } 3075 3076 hci_dev_unlock(hdev); 3077 } 3078 3079 static int hci_read_enc_key_size(struct hci_dev *hdev, struct hci_conn *conn) 3080 { 3081 struct hci_cp_read_enc_key_size cp; 3082 u8 *key_enc_size = hci_conn_key_enc_size(conn); 3083 3084 if (!read_key_size_capable(hdev)) { 3085 conn->enc_key_size = HCI_LINK_KEY_SIZE; 3086 return -EOPNOTSUPP; 3087 } 3088 3089 bt_dev_dbg(hdev, "hcon %p", conn); 3090 3091 memset(&cp, 0, sizeof(cp)); 3092 cp.handle = cpu_to_le16(conn->handle); 3093 3094 /* If the key enc_size is already known, use it as conn->enc_key_size, 3095 * otherwise use hdev->min_enc_key_size so the likes of 3096 * l2cap_check_enc_key_size don't fail while waiting for 3097 * HCI_OP_READ_ENC_KEY_SIZE response. 3098 */ 3099 if (key_enc_size && *key_enc_size) 3100 conn->enc_key_size = *key_enc_size; 3101 else 3102 conn->enc_key_size = hdev->min_enc_key_size; 3103 3104 return hci_send_cmd(hdev, HCI_OP_READ_ENC_KEY_SIZE, sizeof(cp), &cp); 3105 } 3106 3107 static void hci_conn_complete_evt(struct hci_dev *hdev, void *data, 3108 struct sk_buff *skb) 3109 { 3110 struct hci_ev_conn_complete *ev = data; 3111 struct hci_conn *conn; 3112 u8 status = ev->status; 3113 3114 bt_dev_dbg(hdev, "status 0x%2.2x", status); 3115 3116 hci_dev_lock(hdev); 3117 3118 conn = hci_conn_hash_lookup_ba(hdev, ev->link_type, &ev->bdaddr); 3119 if (!conn) { 3120 /* In case of error status and there is no connection pending 3121 * just unlock as there is nothing to cleanup. 3122 */ 3123 if (ev->status) 3124 goto unlock; 3125 3126 /* Connection may not exist if auto-connected. Check the bredr 3127 * allowlist to see if this device is allowed to auto connect. 3128 * If link is an ACL type, create a connection class 3129 * automatically. 3130 * 3131 * Auto-connect will only occur if the event filter is 3132 * programmed with a given address. Right now, event filter is 3133 * only used during suspend. 3134 */ 3135 if (ev->link_type == ACL_LINK && 3136 hci_bdaddr_list_lookup_with_flags(&hdev->accept_list, 3137 &ev->bdaddr, 3138 BDADDR_BREDR)) { 3139 conn = hci_conn_add_unset(hdev, ev->link_type, 3140 &ev->bdaddr, HCI_ROLE_SLAVE); 3141 if (IS_ERR(conn)) { 3142 bt_dev_err(hdev, "connection err: %ld", PTR_ERR(conn)); 3143 goto unlock; 3144 } 3145 } else { 3146 if (ev->link_type != SCO_LINK) 3147 goto unlock; 3148 3149 conn = hci_conn_hash_lookup_ba(hdev, ESCO_LINK, 3150 &ev->bdaddr); 3151 if (!conn) 3152 goto unlock; 3153 3154 conn->type = SCO_LINK; 3155 } 3156 } 3157 3158 /* The HCI_Connection_Complete event is only sent once per connection. 3159 * Processing it more than once per connection can corrupt kernel memory. 3160 * 3161 * As the connection handle is set here for the first time, it indicates 3162 * whether the connection is already set up. 3163 */ 3164 if (!HCI_CONN_HANDLE_UNSET(conn->handle)) { 3165 bt_dev_err(hdev, "Ignoring HCI_Connection_Complete for existing connection"); 3166 goto unlock; 3167 } 3168 3169 if (!status) { 3170 status = hci_conn_set_handle(conn, __le16_to_cpu(ev->handle)); 3171 if (status) 3172 goto done; 3173 3174 if (conn->type == ACL_LINK) { 3175 conn->state = BT_CONFIG; 3176 hci_conn_hold(conn); 3177 3178 if (!conn->out && !hci_conn_ssp_enabled(conn) && 3179 !hci_find_link_key(hdev, &ev->bdaddr)) 3180 conn->disc_timeout = HCI_PAIRING_TIMEOUT; 3181 else 3182 conn->disc_timeout = HCI_DISCONN_TIMEOUT; 3183 } else 3184 conn->state = BT_CONNECTED; 3185 3186 hci_debugfs_create_conn(conn); 3187 hci_conn_add_sysfs(conn); 3188 3189 if (test_bit(HCI_AUTH, &hdev->flags)) 3190 set_bit(HCI_CONN_AUTH, &conn->flags); 3191 3192 if (test_bit(HCI_ENCRYPT, &hdev->flags)) 3193 set_bit(HCI_CONN_ENCRYPT, &conn->flags); 3194 3195 /* "Link key request" completed ahead of "connect request" completes */ 3196 if (ev->encr_mode == 1 && !test_bit(HCI_CONN_ENCRYPT, &conn->flags) && 3197 ev->link_type == ACL_LINK) { 3198 struct link_key *key; 3199 3200 key = hci_find_link_key(hdev, &ev->bdaddr); 3201 if (key) { 3202 set_bit(HCI_CONN_ENCRYPT, &conn->flags); 3203 hci_read_enc_key_size(hdev, conn); 3204 hci_encrypt_cfm(conn, ev->status); 3205 } 3206 } 3207 3208 /* Get remote features */ 3209 if (conn->type == ACL_LINK) { 3210 struct hci_cp_read_remote_features cp; 3211 cp.handle = ev->handle; 3212 hci_send_cmd(hdev, HCI_OP_READ_REMOTE_FEATURES, 3213 sizeof(cp), &cp); 3214 3215 hci_update_scan(hdev); 3216 } 3217 3218 /* Set packet type for incoming connection */ 3219 if (!conn->out && hdev->hci_ver < BLUETOOTH_VER_2_0) { 3220 struct hci_cp_change_conn_ptype cp; 3221 cp.handle = ev->handle; 3222 cp.pkt_type = cpu_to_le16(conn->pkt_type); 3223 hci_send_cmd(hdev, HCI_OP_CHANGE_CONN_PTYPE, sizeof(cp), 3224 &cp); 3225 } 3226 } 3227 3228 if (conn->type == ACL_LINK) 3229 hci_sco_setup(conn, ev->status); 3230 3231 done: 3232 if (status) { 3233 hci_conn_failed(conn, status); 3234 } else if (ev->link_type == SCO_LINK) { 3235 switch (conn->setting & SCO_AIRMODE_MASK) { 3236 case SCO_AIRMODE_CVSD: 3237 if (hdev->notify) 3238 hdev->notify(hdev, HCI_NOTIFY_ENABLE_SCO_CVSD); 3239 break; 3240 } 3241 3242 hci_connect_cfm(conn, status); 3243 } 3244 3245 unlock: 3246 hci_dev_unlock(hdev); 3247 } 3248 3249 static void hci_reject_conn(struct hci_dev *hdev, bdaddr_t *bdaddr) 3250 { 3251 struct hci_cp_reject_conn_req cp; 3252 3253 bacpy(&cp.bdaddr, bdaddr); 3254 cp.reason = HCI_ERROR_REJ_BAD_ADDR; 3255 hci_send_cmd(hdev, HCI_OP_REJECT_CONN_REQ, sizeof(cp), &cp); 3256 } 3257 3258 static void hci_conn_request_evt(struct hci_dev *hdev, void *data, 3259 struct sk_buff *skb) 3260 { 3261 struct hci_ev_conn_request *ev = data; 3262 int mask = hdev->link_mode; 3263 struct inquiry_entry *ie; 3264 struct hci_conn *conn; 3265 __u8 flags = 0; 3266 3267 bt_dev_dbg(hdev, "bdaddr %pMR type 0x%x", &ev->bdaddr, ev->link_type); 3268 3269 /* Reject incoming connection from device with same BD ADDR against 3270 * CVE-2020-26555 3271 */ 3272 if (hdev && !bacmp(&hdev->bdaddr, &ev->bdaddr)) { 3273 bt_dev_dbg(hdev, "Reject connection with same BD_ADDR %pMR\n", 3274 &ev->bdaddr); 3275 hci_reject_conn(hdev, &ev->bdaddr); 3276 return; 3277 } 3278 3279 mask |= hci_proto_connect_ind(hdev, &ev->bdaddr, ev->link_type, 3280 &flags); 3281 3282 if (!(mask & HCI_LM_ACCEPT)) { 3283 hci_reject_conn(hdev, &ev->bdaddr); 3284 return; 3285 } 3286 3287 hci_dev_lock(hdev); 3288 3289 if (hci_bdaddr_list_lookup(&hdev->reject_list, &ev->bdaddr, 3290 BDADDR_BREDR)) { 3291 hci_reject_conn(hdev, &ev->bdaddr); 3292 goto unlock; 3293 } 3294 3295 /* Require HCI_CONNECTABLE or an accept list entry to accept the 3296 * connection. These features are only touched through mgmt so 3297 * only do the checks if HCI_MGMT is set. 3298 */ 3299 if (hci_dev_test_flag(hdev, HCI_MGMT) && 3300 !hci_dev_test_flag(hdev, HCI_CONNECTABLE) && 3301 !hci_bdaddr_list_lookup_with_flags(&hdev->accept_list, &ev->bdaddr, 3302 BDADDR_BREDR)) { 3303 hci_reject_conn(hdev, &ev->bdaddr); 3304 goto unlock; 3305 } 3306 3307 /* Connection accepted */ 3308 3309 ie = hci_inquiry_cache_lookup(hdev, &ev->bdaddr); 3310 if (ie) 3311 memcpy(ie->data.dev_class, ev->dev_class, 3); 3312 3313 conn = hci_conn_hash_lookup_ba(hdev, ev->link_type, 3314 &ev->bdaddr); 3315 if (!conn) { 3316 conn = hci_conn_add_unset(hdev, ev->link_type, &ev->bdaddr, 3317 HCI_ROLE_SLAVE); 3318 if (IS_ERR(conn)) { 3319 bt_dev_err(hdev, "connection err: %ld", PTR_ERR(conn)); 3320 goto unlock; 3321 } 3322 } 3323 3324 memcpy(conn->dev_class, ev->dev_class, 3); 3325 3326 hci_dev_unlock(hdev); 3327 3328 if (ev->link_type == ACL_LINK || 3329 (!(flags & HCI_PROTO_DEFER) && !lmp_esco_capable(hdev))) { 3330 struct hci_cp_accept_conn_req cp; 3331 conn->state = BT_CONNECT; 3332 3333 bacpy(&cp.bdaddr, &ev->bdaddr); 3334 3335 if (lmp_rswitch_capable(hdev) && (mask & HCI_LM_MASTER)) 3336 cp.role = 0x00; /* Become central */ 3337 else 3338 cp.role = 0x01; /* Remain peripheral */ 3339 3340 hci_send_cmd(hdev, HCI_OP_ACCEPT_CONN_REQ, sizeof(cp), &cp); 3341 } else if (!(flags & HCI_PROTO_DEFER)) { 3342 struct hci_cp_accept_sync_conn_req cp; 3343 conn->state = BT_CONNECT; 3344 3345 bacpy(&cp.bdaddr, &ev->bdaddr); 3346 cp.pkt_type = cpu_to_le16(conn->pkt_type); 3347 3348 cp.tx_bandwidth = cpu_to_le32(0x00001f40); 3349 cp.rx_bandwidth = cpu_to_le32(0x00001f40); 3350 cp.max_latency = cpu_to_le16(0xffff); 3351 cp.content_format = cpu_to_le16(hdev->voice_setting); 3352 cp.retrans_effort = 0xff; 3353 3354 hci_send_cmd(hdev, HCI_OP_ACCEPT_SYNC_CONN_REQ, sizeof(cp), 3355 &cp); 3356 } else { 3357 conn->state = BT_CONNECT2; 3358 hci_connect_cfm(conn, 0); 3359 } 3360 3361 return; 3362 unlock: 3363 hci_dev_unlock(hdev); 3364 } 3365 3366 static u8 hci_to_mgmt_reason(u8 err) 3367 { 3368 switch (err) { 3369 case HCI_ERROR_CONNECTION_TIMEOUT: 3370 return MGMT_DEV_DISCONN_TIMEOUT; 3371 case HCI_ERROR_REMOTE_USER_TERM: 3372 case HCI_ERROR_REMOTE_LOW_RESOURCES: 3373 case HCI_ERROR_REMOTE_POWER_OFF: 3374 return MGMT_DEV_DISCONN_REMOTE; 3375 case HCI_ERROR_LOCAL_HOST_TERM: 3376 return MGMT_DEV_DISCONN_LOCAL_HOST; 3377 default: 3378 return MGMT_DEV_DISCONN_UNKNOWN; 3379 } 3380 } 3381 3382 static void hci_disconn_complete_evt(struct hci_dev *hdev, void *data, 3383 struct sk_buff *skb) 3384 { 3385 struct hci_ev_disconn_complete *ev = data; 3386 u8 reason; 3387 struct hci_conn_params *params; 3388 struct hci_conn *conn; 3389 bool mgmt_connected; 3390 3391 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 3392 3393 hci_dev_lock(hdev); 3394 3395 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle)); 3396 if (!conn) 3397 goto unlock; 3398 3399 if (ev->status) { 3400 mgmt_disconnect_failed(hdev, &conn->dst, conn->type, 3401 conn->dst_type, ev->status); 3402 goto unlock; 3403 } 3404 3405 conn->state = BT_CLOSED; 3406 3407 mgmt_connected = test_and_clear_bit(HCI_CONN_MGMT_CONNECTED, &conn->flags); 3408 3409 if (test_bit(HCI_CONN_AUTH_FAILURE, &conn->flags)) 3410 reason = MGMT_DEV_DISCONN_AUTH_FAILURE; 3411 else 3412 reason = hci_to_mgmt_reason(ev->reason); 3413 3414 mgmt_device_disconnected(hdev, &conn->dst, conn->type, conn->dst_type, 3415 reason, mgmt_connected); 3416 3417 if (conn->type == ACL_LINK) { 3418 if (test_and_clear_bit(HCI_CONN_FLUSH_KEY, &conn->flags)) 3419 hci_remove_link_key(hdev, &conn->dst); 3420 3421 hci_update_scan(hdev); 3422 } 3423 3424 /* Re-enable passive scanning if disconnected device is marked 3425 * as auto-connectable. 3426 */ 3427 if (conn->type == LE_LINK) { 3428 params = hci_conn_params_lookup(hdev, &conn->dst, 3429 conn->dst_type); 3430 if (params) { 3431 switch (params->auto_connect) { 3432 case HCI_AUTO_CONN_LINK_LOSS: 3433 if (ev->reason != HCI_ERROR_CONNECTION_TIMEOUT) 3434 break; 3435 fallthrough; 3436 3437 case HCI_AUTO_CONN_DIRECT: 3438 case HCI_AUTO_CONN_ALWAYS: 3439 hci_pend_le_list_del_init(params); 3440 hci_pend_le_list_add(params, 3441 &hdev->pend_le_conns); 3442 hci_update_passive_scan(hdev); 3443 break; 3444 3445 default: 3446 break; 3447 } 3448 } 3449 } 3450 3451 hci_disconn_cfm(conn, ev->reason); 3452 3453 /* Re-enable advertising if necessary, since it might 3454 * have been disabled by the connection. From the 3455 * HCI_LE_Set_Advertise_Enable command description in 3456 * the core specification (v4.0): 3457 * "The Controller shall continue advertising until the Host 3458 * issues an LE_Set_Advertise_Enable command with 3459 * Advertising_Enable set to 0x00 (Advertising is disabled) 3460 * or until a connection is created or until the Advertising 3461 * is timed out due to Directed Advertising." 3462 */ 3463 if (conn->type == LE_LINK && conn->role == HCI_ROLE_SLAVE) { 3464 hdev->cur_adv_instance = conn->adv_instance; 3465 hci_enable_advertising(hdev); 3466 } 3467 3468 hci_conn_del(conn); 3469 3470 unlock: 3471 hci_dev_unlock(hdev); 3472 } 3473 3474 static void hci_auth_complete_evt(struct hci_dev *hdev, void *data, 3475 struct sk_buff *skb) 3476 { 3477 struct hci_ev_auth_complete *ev = data; 3478 struct hci_conn *conn; 3479 3480 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 3481 3482 hci_dev_lock(hdev); 3483 3484 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle)); 3485 if (!conn) 3486 goto unlock; 3487 3488 if (!ev->status) { 3489 clear_bit(HCI_CONN_AUTH_FAILURE, &conn->flags); 3490 set_bit(HCI_CONN_AUTH, &conn->flags); 3491 conn->sec_level = conn->pending_sec_level; 3492 } else { 3493 if (ev->status == HCI_ERROR_PIN_OR_KEY_MISSING) 3494 set_bit(HCI_CONN_AUTH_FAILURE, &conn->flags); 3495 3496 mgmt_auth_failed(conn, ev->status); 3497 } 3498 3499 clear_bit(HCI_CONN_AUTH_PEND, &conn->flags); 3500 3501 if (conn->state == BT_CONFIG) { 3502 if (!ev->status && hci_conn_ssp_enabled(conn)) { 3503 struct hci_cp_set_conn_encrypt cp; 3504 cp.handle = ev->handle; 3505 cp.encrypt = 0x01; 3506 hci_send_cmd(hdev, HCI_OP_SET_CONN_ENCRYPT, sizeof(cp), 3507 &cp); 3508 } else { 3509 conn->state = BT_CONNECTED; 3510 hci_connect_cfm(conn, ev->status); 3511 hci_conn_drop(conn); 3512 } 3513 } else { 3514 hci_auth_cfm(conn, ev->status); 3515 3516 hci_conn_hold(conn); 3517 conn->disc_timeout = HCI_DISCONN_TIMEOUT; 3518 hci_conn_drop(conn); 3519 } 3520 3521 if (test_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags)) { 3522 if (!ev->status) { 3523 struct hci_cp_set_conn_encrypt cp; 3524 cp.handle = ev->handle; 3525 cp.encrypt = 0x01; 3526 hci_send_cmd(hdev, HCI_OP_SET_CONN_ENCRYPT, sizeof(cp), 3527 &cp); 3528 } else { 3529 clear_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags); 3530 hci_encrypt_cfm(conn, ev->status); 3531 } 3532 } 3533 3534 unlock: 3535 hci_dev_unlock(hdev); 3536 } 3537 3538 static void hci_remote_name_evt(struct hci_dev *hdev, void *data, 3539 struct sk_buff *skb) 3540 { 3541 struct hci_ev_remote_name *ev = data; 3542 struct hci_conn *conn; 3543 3544 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 3545 3546 hci_dev_lock(hdev); 3547 3548 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr); 3549 3550 if (!hci_dev_test_flag(hdev, HCI_MGMT)) 3551 goto check_auth; 3552 3553 if (ev->status == 0) 3554 hci_check_pending_name(hdev, conn, &ev->bdaddr, ev->name, 3555 strnlen(ev->name, HCI_MAX_NAME_LENGTH)); 3556 else 3557 hci_check_pending_name(hdev, conn, &ev->bdaddr, NULL, 0); 3558 3559 check_auth: 3560 if (!conn) 3561 goto unlock; 3562 3563 if (!hci_outgoing_auth_needed(hdev, conn)) 3564 goto unlock; 3565 3566 if (!test_and_set_bit(HCI_CONN_AUTH_PEND, &conn->flags)) { 3567 struct hci_cp_auth_requested cp; 3568 3569 set_bit(HCI_CONN_AUTH_INITIATOR, &conn->flags); 3570 3571 cp.handle = __cpu_to_le16(conn->handle); 3572 hci_send_cmd(hdev, HCI_OP_AUTH_REQUESTED, sizeof(cp), &cp); 3573 } 3574 3575 unlock: 3576 hci_dev_unlock(hdev); 3577 } 3578 3579 static void hci_encrypt_change_evt(struct hci_dev *hdev, void *data, 3580 struct sk_buff *skb) 3581 { 3582 struct hci_ev_encrypt_change *ev = data; 3583 struct hci_conn *conn; 3584 3585 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 3586 3587 hci_dev_lock(hdev); 3588 3589 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle)); 3590 if (!conn) 3591 goto unlock; 3592 3593 if (!ev->status) { 3594 if (ev->encrypt) { 3595 /* Encryption implies authentication */ 3596 set_bit(HCI_CONN_AUTH, &conn->flags); 3597 set_bit(HCI_CONN_ENCRYPT, &conn->flags); 3598 conn->sec_level = conn->pending_sec_level; 3599 3600 /* P-256 authentication key implies FIPS */ 3601 if (conn->key_type == HCI_LK_AUTH_COMBINATION_P256) 3602 set_bit(HCI_CONN_FIPS, &conn->flags); 3603 3604 if ((conn->type == ACL_LINK && ev->encrypt == 0x02) || 3605 conn->type == LE_LINK) 3606 set_bit(HCI_CONN_AES_CCM, &conn->flags); 3607 } else { 3608 clear_bit(HCI_CONN_ENCRYPT, &conn->flags); 3609 clear_bit(HCI_CONN_AES_CCM, &conn->flags); 3610 } 3611 } 3612 3613 /* We should disregard the current RPA and generate a new one 3614 * whenever the encryption procedure fails. 3615 */ 3616 if (ev->status && conn->type == LE_LINK) { 3617 hci_dev_set_flag(hdev, HCI_RPA_EXPIRED); 3618 hci_adv_instances_set_rpa_expired(hdev, true); 3619 } 3620 3621 clear_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags); 3622 3623 /* Check link security requirements are met */ 3624 if (!hci_conn_check_link_mode(conn)) 3625 ev->status = HCI_ERROR_AUTH_FAILURE; 3626 3627 if (ev->status && conn->state == BT_CONNECTED) { 3628 if (ev->status == HCI_ERROR_PIN_OR_KEY_MISSING) 3629 set_bit(HCI_CONN_AUTH_FAILURE, &conn->flags); 3630 3631 /* Notify upper layers so they can cleanup before 3632 * disconnecting. 3633 */ 3634 hci_encrypt_cfm(conn, ev->status); 3635 hci_disconnect(conn, HCI_ERROR_AUTH_FAILURE); 3636 hci_conn_drop(conn); 3637 goto unlock; 3638 } 3639 3640 /* Try reading the encryption key size for encrypted ACL links */ 3641 if (!ev->status && ev->encrypt && conn->type == ACL_LINK) { 3642 if (hci_read_enc_key_size(hdev, conn)) 3643 goto notify; 3644 3645 goto unlock; 3646 } 3647 3648 /* We skip the WRITE_AUTH_PAYLOAD_TIMEOUT for ATS2851 based controllers 3649 * to avoid unexpected SMP command errors when pairing. 3650 */ 3651 if (test_bit(HCI_QUIRK_BROKEN_WRITE_AUTH_PAYLOAD_TIMEOUT, 3652 &hdev->quirks)) 3653 goto notify; 3654 3655 /* Set the default Authenticated Payload Timeout after 3656 * an LE Link is established. As per Core Spec v5.0, Vol 2, Part B 3657 * Section 3.3, the HCI command WRITE_AUTH_PAYLOAD_TIMEOUT should be 3658 * sent when the link is active and Encryption is enabled, the conn 3659 * type can be either LE or ACL and controller must support LMP Ping. 3660 * Ensure for AES-CCM encryption as well. 3661 */ 3662 if (test_bit(HCI_CONN_ENCRYPT, &conn->flags) && 3663 test_bit(HCI_CONN_AES_CCM, &conn->flags) && 3664 ((conn->type == ACL_LINK && lmp_ping_capable(hdev)) || 3665 (conn->type == LE_LINK && (hdev->le_features[0] & HCI_LE_PING)))) { 3666 struct hci_cp_write_auth_payload_to cp; 3667 3668 cp.handle = cpu_to_le16(conn->handle); 3669 cp.timeout = cpu_to_le16(hdev->auth_payload_timeout); 3670 if (hci_send_cmd(conn->hdev, HCI_OP_WRITE_AUTH_PAYLOAD_TO, 3671 sizeof(cp), &cp)) 3672 bt_dev_err(hdev, "write auth payload timeout failed"); 3673 } 3674 3675 notify: 3676 hci_encrypt_cfm(conn, ev->status); 3677 3678 unlock: 3679 hci_dev_unlock(hdev); 3680 } 3681 3682 static void hci_change_link_key_complete_evt(struct hci_dev *hdev, void *data, 3683 struct sk_buff *skb) 3684 { 3685 struct hci_ev_change_link_key_complete *ev = data; 3686 struct hci_conn *conn; 3687 3688 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 3689 3690 hci_dev_lock(hdev); 3691 3692 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle)); 3693 if (conn) { 3694 if (!ev->status) 3695 set_bit(HCI_CONN_SECURE, &conn->flags); 3696 3697 clear_bit(HCI_CONN_AUTH_PEND, &conn->flags); 3698 3699 hci_key_change_cfm(conn, ev->status); 3700 } 3701 3702 hci_dev_unlock(hdev); 3703 } 3704 3705 static void hci_remote_features_evt(struct hci_dev *hdev, void *data, 3706 struct sk_buff *skb) 3707 { 3708 struct hci_ev_remote_features *ev = data; 3709 struct hci_conn *conn; 3710 3711 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 3712 3713 hci_dev_lock(hdev); 3714 3715 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle)); 3716 if (!conn) 3717 goto unlock; 3718 3719 if (!ev->status) 3720 memcpy(conn->features[0], ev->features, 8); 3721 3722 if (conn->state != BT_CONFIG) 3723 goto unlock; 3724 3725 if (!ev->status && lmp_ext_feat_capable(hdev) && 3726 lmp_ext_feat_capable(conn)) { 3727 struct hci_cp_read_remote_ext_features cp; 3728 cp.handle = ev->handle; 3729 cp.page = 0x01; 3730 hci_send_cmd(hdev, HCI_OP_READ_REMOTE_EXT_FEATURES, 3731 sizeof(cp), &cp); 3732 goto unlock; 3733 } 3734 3735 if (!ev->status) { 3736 struct hci_cp_remote_name_req cp; 3737 memset(&cp, 0, sizeof(cp)); 3738 bacpy(&cp.bdaddr, &conn->dst); 3739 cp.pscan_rep_mode = 0x02; 3740 hci_send_cmd(hdev, HCI_OP_REMOTE_NAME_REQ, sizeof(cp), &cp); 3741 } else { 3742 mgmt_device_connected(hdev, conn, NULL, 0); 3743 } 3744 3745 if (!hci_outgoing_auth_needed(hdev, conn)) { 3746 conn->state = BT_CONNECTED; 3747 hci_connect_cfm(conn, ev->status); 3748 hci_conn_drop(conn); 3749 } 3750 3751 unlock: 3752 hci_dev_unlock(hdev); 3753 } 3754 3755 static inline void handle_cmd_cnt_and_timer(struct hci_dev *hdev, u8 ncmd) 3756 { 3757 cancel_delayed_work(&hdev->cmd_timer); 3758 3759 rcu_read_lock(); 3760 if (!test_bit(HCI_RESET, &hdev->flags)) { 3761 if (ncmd) { 3762 cancel_delayed_work(&hdev->ncmd_timer); 3763 atomic_set(&hdev->cmd_cnt, 1); 3764 } else { 3765 if (!hci_dev_test_flag(hdev, HCI_CMD_DRAIN_WORKQUEUE)) 3766 queue_delayed_work(hdev->workqueue, &hdev->ncmd_timer, 3767 HCI_NCMD_TIMEOUT); 3768 } 3769 } 3770 rcu_read_unlock(); 3771 } 3772 3773 static u8 hci_cc_le_read_buffer_size_v2(struct hci_dev *hdev, void *data, 3774 struct sk_buff *skb) 3775 { 3776 struct hci_rp_le_read_buffer_size_v2 *rp = data; 3777 3778 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 3779 3780 if (rp->status) 3781 return rp->status; 3782 3783 hdev->le_mtu = __le16_to_cpu(rp->acl_mtu); 3784 hdev->le_pkts = rp->acl_max_pkt; 3785 hdev->iso_mtu = __le16_to_cpu(rp->iso_mtu); 3786 hdev->iso_pkts = rp->iso_max_pkt; 3787 3788 hdev->le_cnt = hdev->le_pkts; 3789 hdev->iso_cnt = hdev->iso_pkts; 3790 3791 BT_DBG("%s acl mtu %d:%d iso mtu %d:%d", hdev->name, hdev->acl_mtu, 3792 hdev->acl_pkts, hdev->iso_mtu, hdev->iso_pkts); 3793 3794 if (hdev->le_mtu && hdev->le_mtu < HCI_MIN_LE_MTU) 3795 return HCI_ERROR_INVALID_PARAMETERS; 3796 3797 return rp->status; 3798 } 3799 3800 static void hci_unbound_cis_failed(struct hci_dev *hdev, u8 cig, u8 status) 3801 { 3802 struct hci_conn *conn, *tmp; 3803 3804 lockdep_assert_held(&hdev->lock); 3805 3806 list_for_each_entry_safe(conn, tmp, &hdev->conn_hash.list, list) { 3807 if (conn->type != CIS_LINK || 3808 conn->state == BT_OPEN || conn->iso_qos.ucast.cig != cig) 3809 continue; 3810 3811 if (HCI_CONN_HANDLE_UNSET(conn->handle)) 3812 hci_conn_failed(conn, status); 3813 } 3814 } 3815 3816 static u8 hci_cc_le_set_cig_params(struct hci_dev *hdev, void *data, 3817 struct sk_buff *skb) 3818 { 3819 struct hci_rp_le_set_cig_params *rp = data; 3820 struct hci_cp_le_set_cig_params *cp; 3821 struct hci_conn *conn; 3822 u8 status = rp->status; 3823 bool pending = false; 3824 int i; 3825 3826 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 3827 3828 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_CIG_PARAMS); 3829 if (!rp->status && (!cp || rp->num_handles != cp->num_cis || 3830 rp->cig_id != cp->cig_id)) { 3831 bt_dev_err(hdev, "unexpected Set CIG Parameters response data"); 3832 status = HCI_ERROR_UNSPECIFIED; 3833 } 3834 3835 hci_dev_lock(hdev); 3836 3837 /* BLUETOOTH CORE SPECIFICATION Version 5.4 | Vol 4, Part E page 2554 3838 * 3839 * If the Status return parameter is non-zero, then the state of the CIG 3840 * and its CIS configurations shall not be changed by the command. If 3841 * the CIG did not already exist, it shall not be created. 3842 */ 3843 if (status) { 3844 /* Keep current configuration, fail only the unbound CIS */ 3845 hci_unbound_cis_failed(hdev, rp->cig_id, status); 3846 goto unlock; 3847 } 3848 3849 /* BLUETOOTH CORE SPECIFICATION Version 5.3 | Vol 4, Part E page 2553 3850 * 3851 * If the Status return parameter is zero, then the Controller shall 3852 * set the Connection_Handle arrayed return parameter to the connection 3853 * handle(s) corresponding to the CIS configurations specified in 3854 * the CIS_IDs command parameter, in the same order. 3855 */ 3856 for (i = 0; i < rp->num_handles; ++i) { 3857 conn = hci_conn_hash_lookup_cis(hdev, NULL, 0, rp->cig_id, 3858 cp->cis[i].cis_id); 3859 if (!conn || !bacmp(&conn->dst, BDADDR_ANY)) 3860 continue; 3861 3862 if (conn->state != BT_BOUND && conn->state != BT_CONNECT) 3863 continue; 3864 3865 if (hci_conn_set_handle(conn, __le16_to_cpu(rp->handle[i]))) 3866 continue; 3867 3868 if (conn->state == BT_CONNECT) 3869 pending = true; 3870 } 3871 3872 unlock: 3873 if (pending) 3874 hci_le_create_cis_pending(hdev); 3875 3876 hci_dev_unlock(hdev); 3877 3878 return rp->status; 3879 } 3880 3881 static u8 hci_cc_le_setup_iso_path(struct hci_dev *hdev, void *data, 3882 struct sk_buff *skb) 3883 { 3884 struct hci_rp_le_setup_iso_path *rp = data; 3885 struct hci_cp_le_setup_iso_path *cp; 3886 struct hci_conn *conn; 3887 3888 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 3889 3890 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SETUP_ISO_PATH); 3891 if (!cp) 3892 return rp->status; 3893 3894 hci_dev_lock(hdev); 3895 3896 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle)); 3897 if (!conn) 3898 goto unlock; 3899 3900 if (rp->status) { 3901 hci_connect_cfm(conn, rp->status); 3902 hci_conn_del(conn); 3903 goto unlock; 3904 } 3905 3906 switch (cp->direction) { 3907 /* Input (Host to Controller) */ 3908 case 0x00: 3909 /* Only confirm connection if output only */ 3910 if (conn->iso_qos.ucast.out.sdu && !conn->iso_qos.ucast.in.sdu) 3911 hci_connect_cfm(conn, rp->status); 3912 break; 3913 /* Output (Controller to Host) */ 3914 case 0x01: 3915 /* Confirm connection since conn->iso_qos is always configured 3916 * last. 3917 */ 3918 hci_connect_cfm(conn, rp->status); 3919 3920 /* Notify device connected in case it is a BIG Sync */ 3921 if (!rp->status && test_bit(HCI_CONN_BIG_SYNC, &conn->flags)) 3922 mgmt_device_connected(hdev, conn, NULL, 0); 3923 3924 break; 3925 } 3926 3927 unlock: 3928 hci_dev_unlock(hdev); 3929 return rp->status; 3930 } 3931 3932 static void hci_cs_le_create_big(struct hci_dev *hdev, u8 status) 3933 { 3934 bt_dev_dbg(hdev, "status 0x%2.2x", status); 3935 } 3936 3937 static u8 hci_cc_set_per_adv_param(struct hci_dev *hdev, void *data, 3938 struct sk_buff *skb) 3939 { 3940 struct hci_ev_status *rp = data; 3941 struct hci_cp_le_set_per_adv_params *cp; 3942 3943 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 3944 3945 if (rp->status) 3946 return rp->status; 3947 3948 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_PER_ADV_PARAMS); 3949 if (!cp) 3950 return rp->status; 3951 3952 /* TODO: set the conn state */ 3953 return rp->status; 3954 } 3955 3956 static u8 hci_cc_le_set_per_adv_enable(struct hci_dev *hdev, void *data, 3957 struct sk_buff *skb) 3958 { 3959 struct hci_ev_status *rp = data; 3960 struct hci_cp_le_set_per_adv_enable *cp; 3961 struct adv_info *adv = NULL, *n; 3962 u8 per_adv_cnt = 0; 3963 3964 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 3965 3966 if (rp->status) 3967 return rp->status; 3968 3969 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_PER_ADV_ENABLE); 3970 if (!cp) 3971 return rp->status; 3972 3973 hci_dev_lock(hdev); 3974 3975 adv = hci_find_adv_instance(hdev, cp->handle); 3976 3977 if (cp->enable) { 3978 hci_dev_set_flag(hdev, HCI_LE_PER_ADV); 3979 3980 if (adv) 3981 adv->enabled = true; 3982 } else { 3983 /* If just one instance was disabled check if there are 3984 * any other instance enabled before clearing HCI_LE_PER_ADV. 3985 * The current periodic adv instance will be marked as 3986 * disabled once extended advertising is also disabled. 3987 */ 3988 list_for_each_entry_safe(adv, n, &hdev->adv_instances, 3989 list) { 3990 if (adv->periodic && adv->enabled) 3991 per_adv_cnt++; 3992 } 3993 3994 if (per_adv_cnt > 1) 3995 goto unlock; 3996 3997 hci_dev_clear_flag(hdev, HCI_LE_PER_ADV); 3998 } 3999 4000 unlock: 4001 hci_dev_unlock(hdev); 4002 4003 return rp->status; 4004 } 4005 4006 #define HCI_CC_VL(_op, _func, _min, _max) \ 4007 { \ 4008 .op = _op, \ 4009 .func = _func, \ 4010 .min_len = _min, \ 4011 .max_len = _max, \ 4012 } 4013 4014 #define HCI_CC(_op, _func, _len) \ 4015 HCI_CC_VL(_op, _func, _len, _len) 4016 4017 #define HCI_CC_STATUS(_op, _func) \ 4018 HCI_CC(_op, _func, sizeof(struct hci_ev_status)) 4019 4020 static const struct hci_cc { 4021 u16 op; 4022 u8 (*func)(struct hci_dev *hdev, void *data, struct sk_buff *skb); 4023 u16 min_len; 4024 u16 max_len; 4025 } hci_cc_table[] = { 4026 HCI_CC_STATUS(HCI_OP_INQUIRY_CANCEL, hci_cc_inquiry_cancel), 4027 HCI_CC_STATUS(HCI_OP_PERIODIC_INQ, hci_cc_periodic_inq), 4028 HCI_CC_STATUS(HCI_OP_EXIT_PERIODIC_INQ, hci_cc_exit_periodic_inq), 4029 HCI_CC(HCI_OP_REMOTE_NAME_REQ_CANCEL, hci_cc_remote_name_req_cancel, 4030 sizeof(struct hci_rp_remote_name_req_cancel)), 4031 HCI_CC(HCI_OP_ROLE_DISCOVERY, hci_cc_role_discovery, 4032 sizeof(struct hci_rp_role_discovery)), 4033 HCI_CC(HCI_OP_READ_LINK_POLICY, hci_cc_read_link_policy, 4034 sizeof(struct hci_rp_read_link_policy)), 4035 HCI_CC(HCI_OP_WRITE_LINK_POLICY, hci_cc_write_link_policy, 4036 sizeof(struct hci_rp_write_link_policy)), 4037 HCI_CC(HCI_OP_READ_DEF_LINK_POLICY, hci_cc_read_def_link_policy, 4038 sizeof(struct hci_rp_read_def_link_policy)), 4039 HCI_CC_STATUS(HCI_OP_WRITE_DEF_LINK_POLICY, 4040 hci_cc_write_def_link_policy), 4041 HCI_CC_STATUS(HCI_OP_RESET, hci_cc_reset), 4042 HCI_CC(HCI_OP_READ_STORED_LINK_KEY, hci_cc_read_stored_link_key, 4043 sizeof(struct hci_rp_read_stored_link_key)), 4044 HCI_CC(HCI_OP_DELETE_STORED_LINK_KEY, hci_cc_delete_stored_link_key, 4045 sizeof(struct hci_rp_delete_stored_link_key)), 4046 HCI_CC_STATUS(HCI_OP_WRITE_LOCAL_NAME, hci_cc_write_local_name), 4047 HCI_CC(HCI_OP_READ_LOCAL_NAME, hci_cc_read_local_name, 4048 sizeof(struct hci_rp_read_local_name)), 4049 HCI_CC_STATUS(HCI_OP_WRITE_AUTH_ENABLE, hci_cc_write_auth_enable), 4050 HCI_CC_STATUS(HCI_OP_WRITE_ENCRYPT_MODE, hci_cc_write_encrypt_mode), 4051 HCI_CC_STATUS(HCI_OP_WRITE_SCAN_ENABLE, hci_cc_write_scan_enable), 4052 HCI_CC_STATUS(HCI_OP_SET_EVENT_FLT, hci_cc_set_event_filter), 4053 HCI_CC(HCI_OP_READ_CLASS_OF_DEV, hci_cc_read_class_of_dev, 4054 sizeof(struct hci_rp_read_class_of_dev)), 4055 HCI_CC_STATUS(HCI_OP_WRITE_CLASS_OF_DEV, hci_cc_write_class_of_dev), 4056 HCI_CC(HCI_OP_READ_VOICE_SETTING, hci_cc_read_voice_setting, 4057 sizeof(struct hci_rp_read_voice_setting)), 4058 HCI_CC_STATUS(HCI_OP_WRITE_VOICE_SETTING, hci_cc_write_voice_setting), 4059 HCI_CC(HCI_OP_READ_NUM_SUPPORTED_IAC, hci_cc_read_num_supported_iac, 4060 sizeof(struct hci_rp_read_num_supported_iac)), 4061 HCI_CC_STATUS(HCI_OP_WRITE_SSP_MODE, hci_cc_write_ssp_mode), 4062 HCI_CC_STATUS(HCI_OP_WRITE_SC_SUPPORT, hci_cc_write_sc_support), 4063 HCI_CC(HCI_OP_READ_AUTH_PAYLOAD_TO, hci_cc_read_auth_payload_timeout, 4064 sizeof(struct hci_rp_read_auth_payload_to)), 4065 HCI_CC(HCI_OP_WRITE_AUTH_PAYLOAD_TO, hci_cc_write_auth_payload_timeout, 4066 sizeof(struct hci_rp_write_auth_payload_to)), 4067 HCI_CC(HCI_OP_READ_LOCAL_VERSION, hci_cc_read_local_version, 4068 sizeof(struct hci_rp_read_local_version)), 4069 HCI_CC(HCI_OP_READ_LOCAL_COMMANDS, hci_cc_read_local_commands, 4070 sizeof(struct hci_rp_read_local_commands)), 4071 HCI_CC(HCI_OP_READ_LOCAL_FEATURES, hci_cc_read_local_features, 4072 sizeof(struct hci_rp_read_local_features)), 4073 HCI_CC(HCI_OP_READ_LOCAL_EXT_FEATURES, hci_cc_read_local_ext_features, 4074 sizeof(struct hci_rp_read_local_ext_features)), 4075 HCI_CC(HCI_OP_READ_BUFFER_SIZE, hci_cc_read_buffer_size, 4076 sizeof(struct hci_rp_read_buffer_size)), 4077 HCI_CC(HCI_OP_READ_BD_ADDR, hci_cc_read_bd_addr, 4078 sizeof(struct hci_rp_read_bd_addr)), 4079 HCI_CC(HCI_OP_READ_LOCAL_PAIRING_OPTS, hci_cc_read_local_pairing_opts, 4080 sizeof(struct hci_rp_read_local_pairing_opts)), 4081 HCI_CC(HCI_OP_READ_PAGE_SCAN_ACTIVITY, hci_cc_read_page_scan_activity, 4082 sizeof(struct hci_rp_read_page_scan_activity)), 4083 HCI_CC_STATUS(HCI_OP_WRITE_PAGE_SCAN_ACTIVITY, 4084 hci_cc_write_page_scan_activity), 4085 HCI_CC(HCI_OP_READ_PAGE_SCAN_TYPE, hci_cc_read_page_scan_type, 4086 sizeof(struct hci_rp_read_page_scan_type)), 4087 HCI_CC_STATUS(HCI_OP_WRITE_PAGE_SCAN_TYPE, hci_cc_write_page_scan_type), 4088 HCI_CC(HCI_OP_READ_CLOCK, hci_cc_read_clock, 4089 sizeof(struct hci_rp_read_clock)), 4090 HCI_CC(HCI_OP_READ_ENC_KEY_SIZE, hci_cc_read_enc_key_size, 4091 sizeof(struct hci_rp_read_enc_key_size)), 4092 HCI_CC(HCI_OP_READ_INQ_RSP_TX_POWER, hci_cc_read_inq_rsp_tx_power, 4093 sizeof(struct hci_rp_read_inq_rsp_tx_power)), 4094 HCI_CC(HCI_OP_READ_DEF_ERR_DATA_REPORTING, 4095 hci_cc_read_def_err_data_reporting, 4096 sizeof(struct hci_rp_read_def_err_data_reporting)), 4097 HCI_CC_STATUS(HCI_OP_WRITE_DEF_ERR_DATA_REPORTING, 4098 hci_cc_write_def_err_data_reporting), 4099 HCI_CC(HCI_OP_PIN_CODE_REPLY, hci_cc_pin_code_reply, 4100 sizeof(struct hci_rp_pin_code_reply)), 4101 HCI_CC(HCI_OP_PIN_CODE_NEG_REPLY, hci_cc_pin_code_neg_reply, 4102 sizeof(struct hci_rp_pin_code_neg_reply)), 4103 HCI_CC(HCI_OP_READ_LOCAL_OOB_DATA, hci_cc_read_local_oob_data, 4104 sizeof(struct hci_rp_read_local_oob_data)), 4105 HCI_CC(HCI_OP_READ_LOCAL_OOB_EXT_DATA, hci_cc_read_local_oob_ext_data, 4106 sizeof(struct hci_rp_read_local_oob_ext_data)), 4107 HCI_CC(HCI_OP_LE_READ_BUFFER_SIZE, hci_cc_le_read_buffer_size, 4108 sizeof(struct hci_rp_le_read_buffer_size)), 4109 HCI_CC(HCI_OP_LE_READ_LOCAL_FEATURES, hci_cc_le_read_local_features, 4110 sizeof(struct hci_rp_le_read_local_features)), 4111 HCI_CC(HCI_OP_LE_READ_ADV_TX_POWER, hci_cc_le_read_adv_tx_power, 4112 sizeof(struct hci_rp_le_read_adv_tx_power)), 4113 HCI_CC(HCI_OP_USER_CONFIRM_REPLY, hci_cc_user_confirm_reply, 4114 sizeof(struct hci_rp_user_confirm_reply)), 4115 HCI_CC(HCI_OP_USER_CONFIRM_NEG_REPLY, hci_cc_user_confirm_neg_reply, 4116 sizeof(struct hci_rp_user_confirm_reply)), 4117 HCI_CC(HCI_OP_USER_PASSKEY_REPLY, hci_cc_user_passkey_reply, 4118 sizeof(struct hci_rp_user_confirm_reply)), 4119 HCI_CC(HCI_OP_USER_PASSKEY_NEG_REPLY, hci_cc_user_passkey_neg_reply, 4120 sizeof(struct hci_rp_user_confirm_reply)), 4121 HCI_CC_STATUS(HCI_OP_LE_SET_RANDOM_ADDR, hci_cc_le_set_random_addr), 4122 HCI_CC_STATUS(HCI_OP_LE_SET_ADV_ENABLE, hci_cc_le_set_adv_enable), 4123 HCI_CC_STATUS(HCI_OP_LE_SET_SCAN_PARAM, hci_cc_le_set_scan_param), 4124 HCI_CC_STATUS(HCI_OP_LE_SET_SCAN_ENABLE, hci_cc_le_set_scan_enable), 4125 HCI_CC(HCI_OP_LE_READ_ACCEPT_LIST_SIZE, 4126 hci_cc_le_read_accept_list_size, 4127 sizeof(struct hci_rp_le_read_accept_list_size)), 4128 HCI_CC_STATUS(HCI_OP_LE_CLEAR_ACCEPT_LIST, hci_cc_le_clear_accept_list), 4129 HCI_CC_STATUS(HCI_OP_LE_ADD_TO_ACCEPT_LIST, 4130 hci_cc_le_add_to_accept_list), 4131 HCI_CC_STATUS(HCI_OP_LE_DEL_FROM_ACCEPT_LIST, 4132 hci_cc_le_del_from_accept_list), 4133 HCI_CC(HCI_OP_LE_READ_SUPPORTED_STATES, hci_cc_le_read_supported_states, 4134 sizeof(struct hci_rp_le_read_supported_states)), 4135 HCI_CC(HCI_OP_LE_READ_DEF_DATA_LEN, hci_cc_le_read_def_data_len, 4136 sizeof(struct hci_rp_le_read_def_data_len)), 4137 HCI_CC_STATUS(HCI_OP_LE_WRITE_DEF_DATA_LEN, 4138 hci_cc_le_write_def_data_len), 4139 HCI_CC_STATUS(HCI_OP_LE_ADD_TO_RESOLV_LIST, 4140 hci_cc_le_add_to_resolv_list), 4141 HCI_CC_STATUS(HCI_OP_LE_DEL_FROM_RESOLV_LIST, 4142 hci_cc_le_del_from_resolv_list), 4143 HCI_CC_STATUS(HCI_OP_LE_CLEAR_RESOLV_LIST, 4144 hci_cc_le_clear_resolv_list), 4145 HCI_CC(HCI_OP_LE_READ_RESOLV_LIST_SIZE, hci_cc_le_read_resolv_list_size, 4146 sizeof(struct hci_rp_le_read_resolv_list_size)), 4147 HCI_CC_STATUS(HCI_OP_LE_SET_ADDR_RESOLV_ENABLE, 4148 hci_cc_le_set_addr_resolution_enable), 4149 HCI_CC(HCI_OP_LE_READ_MAX_DATA_LEN, hci_cc_le_read_max_data_len, 4150 sizeof(struct hci_rp_le_read_max_data_len)), 4151 HCI_CC_STATUS(HCI_OP_WRITE_LE_HOST_SUPPORTED, 4152 hci_cc_write_le_host_supported), 4153 HCI_CC_STATUS(HCI_OP_LE_SET_ADV_PARAM, hci_cc_set_adv_param), 4154 HCI_CC(HCI_OP_READ_RSSI, hci_cc_read_rssi, 4155 sizeof(struct hci_rp_read_rssi)), 4156 HCI_CC(HCI_OP_READ_TX_POWER, hci_cc_read_tx_power, 4157 sizeof(struct hci_rp_read_tx_power)), 4158 HCI_CC_STATUS(HCI_OP_WRITE_SSP_DEBUG_MODE, hci_cc_write_ssp_debug_mode), 4159 HCI_CC_STATUS(HCI_OP_LE_SET_EXT_SCAN_PARAMS, 4160 hci_cc_le_set_ext_scan_param), 4161 HCI_CC_STATUS(HCI_OP_LE_SET_EXT_SCAN_ENABLE, 4162 hci_cc_le_set_ext_scan_enable), 4163 HCI_CC_STATUS(HCI_OP_LE_SET_DEFAULT_PHY, hci_cc_le_set_default_phy), 4164 HCI_CC(HCI_OP_LE_READ_NUM_SUPPORTED_ADV_SETS, 4165 hci_cc_le_read_num_adv_sets, 4166 sizeof(struct hci_rp_le_read_num_supported_adv_sets)), 4167 HCI_CC(HCI_OP_LE_SET_EXT_ADV_PARAMS, hci_cc_set_ext_adv_param, 4168 sizeof(struct hci_rp_le_set_ext_adv_params)), 4169 HCI_CC_STATUS(HCI_OP_LE_SET_EXT_ADV_ENABLE, 4170 hci_cc_le_set_ext_adv_enable), 4171 HCI_CC_STATUS(HCI_OP_LE_SET_ADV_SET_RAND_ADDR, 4172 hci_cc_le_set_adv_set_random_addr), 4173 HCI_CC_STATUS(HCI_OP_LE_REMOVE_ADV_SET, hci_cc_le_remove_adv_set), 4174 HCI_CC_STATUS(HCI_OP_LE_CLEAR_ADV_SETS, hci_cc_le_clear_adv_sets), 4175 HCI_CC_STATUS(HCI_OP_LE_SET_PER_ADV_PARAMS, hci_cc_set_per_adv_param), 4176 HCI_CC_STATUS(HCI_OP_LE_SET_PER_ADV_ENABLE, 4177 hci_cc_le_set_per_adv_enable), 4178 HCI_CC(HCI_OP_LE_READ_TRANSMIT_POWER, hci_cc_le_read_transmit_power, 4179 sizeof(struct hci_rp_le_read_transmit_power)), 4180 HCI_CC_STATUS(HCI_OP_LE_SET_PRIVACY_MODE, hci_cc_le_set_privacy_mode), 4181 HCI_CC(HCI_OP_LE_READ_BUFFER_SIZE_V2, hci_cc_le_read_buffer_size_v2, 4182 sizeof(struct hci_rp_le_read_buffer_size_v2)), 4183 HCI_CC_VL(HCI_OP_LE_SET_CIG_PARAMS, hci_cc_le_set_cig_params, 4184 sizeof(struct hci_rp_le_set_cig_params), HCI_MAX_EVENT_SIZE), 4185 HCI_CC(HCI_OP_LE_SETUP_ISO_PATH, hci_cc_le_setup_iso_path, 4186 sizeof(struct hci_rp_le_setup_iso_path)), 4187 }; 4188 4189 static u8 hci_cc_func(struct hci_dev *hdev, const struct hci_cc *cc, 4190 struct sk_buff *skb) 4191 { 4192 void *data; 4193 4194 if (skb->len < cc->min_len) { 4195 bt_dev_err(hdev, "unexpected cc 0x%4.4x length: %u < %u", 4196 cc->op, skb->len, cc->min_len); 4197 return HCI_ERROR_UNSPECIFIED; 4198 } 4199 4200 /* Just warn if the length is over max_len size it still be possible to 4201 * partially parse the cc so leave to callback to decide if that is 4202 * acceptable. 4203 */ 4204 if (skb->len > cc->max_len) 4205 bt_dev_warn(hdev, "unexpected cc 0x%4.4x length: %u > %u", 4206 cc->op, skb->len, cc->max_len); 4207 4208 data = hci_cc_skb_pull(hdev, skb, cc->op, cc->min_len); 4209 if (!data) 4210 return HCI_ERROR_UNSPECIFIED; 4211 4212 return cc->func(hdev, data, skb); 4213 } 4214 4215 static void hci_cmd_complete_evt(struct hci_dev *hdev, void *data, 4216 struct sk_buff *skb, u16 *opcode, u8 *status, 4217 hci_req_complete_t *req_complete, 4218 hci_req_complete_skb_t *req_complete_skb) 4219 { 4220 struct hci_ev_cmd_complete *ev = data; 4221 int i; 4222 4223 *opcode = __le16_to_cpu(ev->opcode); 4224 4225 bt_dev_dbg(hdev, "opcode 0x%4.4x", *opcode); 4226 4227 for (i = 0; i < ARRAY_SIZE(hci_cc_table); i++) { 4228 if (hci_cc_table[i].op == *opcode) { 4229 *status = hci_cc_func(hdev, &hci_cc_table[i], skb); 4230 break; 4231 } 4232 } 4233 4234 if (i == ARRAY_SIZE(hci_cc_table)) { 4235 /* Unknown opcode, assume byte 0 contains the status, so 4236 * that e.g. __hci_cmd_sync() properly returns errors 4237 * for vendor specific commands send by HCI drivers. 4238 * If a vendor doesn't actually follow this convention we may 4239 * need to introduce a vendor CC table in order to properly set 4240 * the status. 4241 */ 4242 *status = skb->data[0]; 4243 } 4244 4245 handle_cmd_cnt_and_timer(hdev, ev->ncmd); 4246 4247 hci_req_cmd_complete(hdev, *opcode, *status, req_complete, 4248 req_complete_skb); 4249 4250 if (hci_dev_test_flag(hdev, HCI_CMD_PENDING)) { 4251 bt_dev_err(hdev, 4252 "unexpected event for opcode 0x%4.4x", *opcode); 4253 return; 4254 } 4255 4256 if (atomic_read(&hdev->cmd_cnt) && !skb_queue_empty(&hdev->cmd_q)) 4257 queue_work(hdev->workqueue, &hdev->cmd_work); 4258 } 4259 4260 static void hci_cs_le_create_cis(struct hci_dev *hdev, u8 status) 4261 { 4262 struct hci_cp_le_create_cis *cp; 4263 bool pending = false; 4264 int i; 4265 4266 bt_dev_dbg(hdev, "status 0x%2.2x", status); 4267 4268 if (!status) 4269 return; 4270 4271 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_CREATE_CIS); 4272 if (!cp) 4273 return; 4274 4275 hci_dev_lock(hdev); 4276 4277 /* Remove connection if command failed */ 4278 for (i = 0; i < cp->num_cis; i++) { 4279 struct hci_conn *conn; 4280 u16 handle; 4281 4282 handle = __le16_to_cpu(cp->cis[i].cis_handle); 4283 4284 conn = hci_conn_hash_lookup_handle(hdev, handle); 4285 if (conn) { 4286 if (test_and_clear_bit(HCI_CONN_CREATE_CIS, 4287 &conn->flags)) 4288 pending = true; 4289 conn->state = BT_CLOSED; 4290 hci_connect_cfm(conn, status); 4291 hci_conn_del(conn); 4292 } 4293 } 4294 cp->num_cis = 0; 4295 4296 if (pending) 4297 hci_le_create_cis_pending(hdev); 4298 4299 hci_dev_unlock(hdev); 4300 } 4301 4302 #define HCI_CS(_op, _func) \ 4303 { \ 4304 .op = _op, \ 4305 .func = _func, \ 4306 } 4307 4308 static const struct hci_cs { 4309 u16 op; 4310 void (*func)(struct hci_dev *hdev, __u8 status); 4311 } hci_cs_table[] = { 4312 HCI_CS(HCI_OP_INQUIRY, hci_cs_inquiry), 4313 HCI_CS(HCI_OP_CREATE_CONN, hci_cs_create_conn), 4314 HCI_CS(HCI_OP_DISCONNECT, hci_cs_disconnect), 4315 HCI_CS(HCI_OP_ADD_SCO, hci_cs_add_sco), 4316 HCI_CS(HCI_OP_AUTH_REQUESTED, hci_cs_auth_requested), 4317 HCI_CS(HCI_OP_SET_CONN_ENCRYPT, hci_cs_set_conn_encrypt), 4318 HCI_CS(HCI_OP_REMOTE_NAME_REQ, hci_cs_remote_name_req), 4319 HCI_CS(HCI_OP_READ_REMOTE_FEATURES, hci_cs_read_remote_features), 4320 HCI_CS(HCI_OP_READ_REMOTE_EXT_FEATURES, 4321 hci_cs_read_remote_ext_features), 4322 HCI_CS(HCI_OP_SETUP_SYNC_CONN, hci_cs_setup_sync_conn), 4323 HCI_CS(HCI_OP_ENHANCED_SETUP_SYNC_CONN, 4324 hci_cs_enhanced_setup_sync_conn), 4325 HCI_CS(HCI_OP_SNIFF_MODE, hci_cs_sniff_mode), 4326 HCI_CS(HCI_OP_EXIT_SNIFF_MODE, hci_cs_exit_sniff_mode), 4327 HCI_CS(HCI_OP_SWITCH_ROLE, hci_cs_switch_role), 4328 HCI_CS(HCI_OP_LE_CREATE_CONN, hci_cs_le_create_conn), 4329 HCI_CS(HCI_OP_LE_READ_REMOTE_FEATURES, hci_cs_le_read_remote_features), 4330 HCI_CS(HCI_OP_LE_START_ENC, hci_cs_le_start_enc), 4331 HCI_CS(HCI_OP_LE_EXT_CREATE_CONN, hci_cs_le_ext_create_conn), 4332 HCI_CS(HCI_OP_LE_CREATE_CIS, hci_cs_le_create_cis), 4333 HCI_CS(HCI_OP_LE_CREATE_BIG, hci_cs_le_create_big), 4334 }; 4335 4336 static void hci_cmd_status_evt(struct hci_dev *hdev, void *data, 4337 struct sk_buff *skb, u16 *opcode, u8 *status, 4338 hci_req_complete_t *req_complete, 4339 hci_req_complete_skb_t *req_complete_skb) 4340 { 4341 struct hci_ev_cmd_status *ev = data; 4342 int i; 4343 4344 *opcode = __le16_to_cpu(ev->opcode); 4345 *status = ev->status; 4346 4347 bt_dev_dbg(hdev, "opcode 0x%4.4x", *opcode); 4348 4349 for (i = 0; i < ARRAY_SIZE(hci_cs_table); i++) { 4350 if (hci_cs_table[i].op == *opcode) { 4351 hci_cs_table[i].func(hdev, ev->status); 4352 break; 4353 } 4354 } 4355 4356 handle_cmd_cnt_and_timer(hdev, ev->ncmd); 4357 4358 /* Indicate request completion if the command failed. Also, if 4359 * we're not waiting for a special event and we get a success 4360 * command status we should try to flag the request as completed 4361 * (since for this kind of commands there will not be a command 4362 * complete event). 4363 */ 4364 if (ev->status || (hdev->req_skb && !hci_skb_event(hdev->req_skb))) { 4365 hci_req_cmd_complete(hdev, *opcode, ev->status, req_complete, 4366 req_complete_skb); 4367 if (hci_dev_test_flag(hdev, HCI_CMD_PENDING)) { 4368 bt_dev_err(hdev, "unexpected event for opcode 0x%4.4x", 4369 *opcode); 4370 return; 4371 } 4372 } 4373 4374 if (atomic_read(&hdev->cmd_cnt) && !skb_queue_empty(&hdev->cmd_q)) 4375 queue_work(hdev->workqueue, &hdev->cmd_work); 4376 } 4377 4378 static void hci_hardware_error_evt(struct hci_dev *hdev, void *data, 4379 struct sk_buff *skb) 4380 { 4381 struct hci_ev_hardware_error *ev = data; 4382 4383 bt_dev_dbg(hdev, "code 0x%2.2x", ev->code); 4384 4385 hdev->hw_error_code = ev->code; 4386 4387 queue_work(hdev->req_workqueue, &hdev->error_reset); 4388 } 4389 4390 static void hci_role_change_evt(struct hci_dev *hdev, void *data, 4391 struct sk_buff *skb) 4392 { 4393 struct hci_ev_role_change *ev = data; 4394 struct hci_conn *conn; 4395 4396 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 4397 4398 hci_dev_lock(hdev); 4399 4400 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr); 4401 if (conn) { 4402 if (!ev->status) 4403 conn->role = ev->role; 4404 4405 clear_bit(HCI_CONN_RSWITCH_PEND, &conn->flags); 4406 4407 hci_role_switch_cfm(conn, ev->status, ev->role); 4408 } 4409 4410 hci_dev_unlock(hdev); 4411 } 4412 4413 static void hci_num_comp_pkts_evt(struct hci_dev *hdev, void *data, 4414 struct sk_buff *skb) 4415 { 4416 struct hci_ev_num_comp_pkts *ev = data; 4417 int i; 4418 4419 if (!hci_ev_skb_pull(hdev, skb, HCI_EV_NUM_COMP_PKTS, 4420 flex_array_size(ev, handles, ev->num))) 4421 return; 4422 4423 bt_dev_dbg(hdev, "num %d", ev->num); 4424 4425 for (i = 0; i < ev->num; i++) { 4426 struct hci_comp_pkts_info *info = &ev->handles[i]; 4427 struct hci_conn *conn; 4428 __u16 handle, count; 4429 unsigned int i; 4430 4431 handle = __le16_to_cpu(info->handle); 4432 count = __le16_to_cpu(info->count); 4433 4434 conn = hci_conn_hash_lookup_handle(hdev, handle); 4435 if (!conn) 4436 continue; 4437 4438 conn->sent -= count; 4439 4440 for (i = 0; i < count; ++i) 4441 hci_conn_tx_dequeue(conn); 4442 4443 switch (conn->type) { 4444 case ACL_LINK: 4445 hdev->acl_cnt += count; 4446 if (hdev->acl_cnt > hdev->acl_pkts) 4447 hdev->acl_cnt = hdev->acl_pkts; 4448 break; 4449 4450 case LE_LINK: 4451 if (hdev->le_pkts) { 4452 hdev->le_cnt += count; 4453 if (hdev->le_cnt > hdev->le_pkts) 4454 hdev->le_cnt = hdev->le_pkts; 4455 } else { 4456 hdev->acl_cnt += count; 4457 if (hdev->acl_cnt > hdev->acl_pkts) 4458 hdev->acl_cnt = hdev->acl_pkts; 4459 } 4460 break; 4461 4462 case SCO_LINK: 4463 case ESCO_LINK: 4464 hdev->sco_cnt += count; 4465 if (hdev->sco_cnt > hdev->sco_pkts) 4466 hdev->sco_cnt = hdev->sco_pkts; 4467 4468 break; 4469 4470 case CIS_LINK: 4471 case BIS_LINK: 4472 if (hdev->iso_pkts) { 4473 hdev->iso_cnt += count; 4474 if (hdev->iso_cnt > hdev->iso_pkts) 4475 hdev->iso_cnt = hdev->iso_pkts; 4476 } else if (hdev->le_pkts) { 4477 hdev->le_cnt += count; 4478 if (hdev->le_cnt > hdev->le_pkts) 4479 hdev->le_cnt = hdev->le_pkts; 4480 } else { 4481 hdev->acl_cnt += count; 4482 if (hdev->acl_cnt > hdev->acl_pkts) 4483 hdev->acl_cnt = hdev->acl_pkts; 4484 } 4485 break; 4486 4487 default: 4488 bt_dev_err(hdev, "unknown type %d conn %p", 4489 conn->type, conn); 4490 break; 4491 } 4492 } 4493 4494 queue_work(hdev->workqueue, &hdev->tx_work); 4495 } 4496 4497 static void hci_mode_change_evt(struct hci_dev *hdev, void *data, 4498 struct sk_buff *skb) 4499 { 4500 struct hci_ev_mode_change *ev = data; 4501 struct hci_conn *conn; 4502 4503 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 4504 4505 hci_dev_lock(hdev); 4506 4507 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle)); 4508 if (conn) { 4509 conn->mode = ev->mode; 4510 4511 if (!test_and_clear_bit(HCI_CONN_MODE_CHANGE_PEND, 4512 &conn->flags)) { 4513 if (conn->mode == HCI_CM_ACTIVE) 4514 set_bit(HCI_CONN_POWER_SAVE, &conn->flags); 4515 else 4516 clear_bit(HCI_CONN_POWER_SAVE, &conn->flags); 4517 } 4518 4519 if (test_and_clear_bit(HCI_CONN_SCO_SETUP_PEND, &conn->flags)) 4520 hci_sco_setup(conn, ev->status); 4521 } 4522 4523 hci_dev_unlock(hdev); 4524 } 4525 4526 static void hci_pin_code_request_evt(struct hci_dev *hdev, void *data, 4527 struct sk_buff *skb) 4528 { 4529 struct hci_ev_pin_code_req *ev = data; 4530 struct hci_conn *conn; 4531 4532 bt_dev_dbg(hdev, ""); 4533 4534 hci_dev_lock(hdev); 4535 4536 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr); 4537 if (!conn) 4538 goto unlock; 4539 4540 if (conn->state == BT_CONNECTED) { 4541 hci_conn_hold(conn); 4542 conn->disc_timeout = HCI_PAIRING_TIMEOUT; 4543 hci_conn_drop(conn); 4544 } 4545 4546 if (!hci_dev_test_flag(hdev, HCI_BONDABLE) && 4547 !test_bit(HCI_CONN_AUTH_INITIATOR, &conn->flags)) { 4548 hci_send_cmd(hdev, HCI_OP_PIN_CODE_NEG_REPLY, 4549 sizeof(ev->bdaddr), &ev->bdaddr); 4550 } else if (hci_dev_test_flag(hdev, HCI_MGMT)) { 4551 u8 secure; 4552 4553 if (conn->pending_sec_level == BT_SECURITY_HIGH) 4554 secure = 1; 4555 else 4556 secure = 0; 4557 4558 mgmt_pin_code_request(hdev, &ev->bdaddr, secure); 4559 } 4560 4561 unlock: 4562 hci_dev_unlock(hdev); 4563 } 4564 4565 static void conn_set_key(struct hci_conn *conn, u8 key_type, u8 pin_len) 4566 { 4567 if (key_type == HCI_LK_CHANGED_COMBINATION) 4568 return; 4569 4570 conn->pin_length = pin_len; 4571 conn->key_type = key_type; 4572 4573 switch (key_type) { 4574 case HCI_LK_LOCAL_UNIT: 4575 case HCI_LK_REMOTE_UNIT: 4576 case HCI_LK_DEBUG_COMBINATION: 4577 return; 4578 case HCI_LK_COMBINATION: 4579 if (pin_len == 16) 4580 conn->pending_sec_level = BT_SECURITY_HIGH; 4581 else 4582 conn->pending_sec_level = BT_SECURITY_MEDIUM; 4583 break; 4584 case HCI_LK_UNAUTH_COMBINATION_P192: 4585 case HCI_LK_UNAUTH_COMBINATION_P256: 4586 conn->pending_sec_level = BT_SECURITY_MEDIUM; 4587 break; 4588 case HCI_LK_AUTH_COMBINATION_P192: 4589 conn->pending_sec_level = BT_SECURITY_HIGH; 4590 break; 4591 case HCI_LK_AUTH_COMBINATION_P256: 4592 conn->pending_sec_level = BT_SECURITY_FIPS; 4593 break; 4594 } 4595 } 4596 4597 static void hci_link_key_request_evt(struct hci_dev *hdev, void *data, 4598 struct sk_buff *skb) 4599 { 4600 struct hci_ev_link_key_req *ev = data; 4601 struct hci_cp_link_key_reply cp; 4602 struct hci_conn *conn; 4603 struct link_key *key; 4604 4605 bt_dev_dbg(hdev, ""); 4606 4607 if (!hci_dev_test_flag(hdev, HCI_MGMT)) 4608 return; 4609 4610 hci_dev_lock(hdev); 4611 4612 key = hci_find_link_key(hdev, &ev->bdaddr); 4613 if (!key) { 4614 bt_dev_dbg(hdev, "link key not found for %pMR", &ev->bdaddr); 4615 goto not_found; 4616 } 4617 4618 bt_dev_dbg(hdev, "found key type %u for %pMR", key->type, &ev->bdaddr); 4619 4620 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr); 4621 if (conn) { 4622 clear_bit(HCI_CONN_NEW_LINK_KEY, &conn->flags); 4623 4624 if ((key->type == HCI_LK_UNAUTH_COMBINATION_P192 || 4625 key->type == HCI_LK_UNAUTH_COMBINATION_P256) && 4626 conn->auth_type != 0xff && (conn->auth_type & 0x01)) { 4627 bt_dev_dbg(hdev, "ignoring unauthenticated key"); 4628 goto not_found; 4629 } 4630 4631 if (key->type == HCI_LK_COMBINATION && key->pin_len < 16 && 4632 (conn->pending_sec_level == BT_SECURITY_HIGH || 4633 conn->pending_sec_level == BT_SECURITY_FIPS)) { 4634 bt_dev_dbg(hdev, "ignoring key unauthenticated for high security"); 4635 goto not_found; 4636 } 4637 4638 conn_set_key(conn, key->type, key->pin_len); 4639 } 4640 4641 bacpy(&cp.bdaddr, &ev->bdaddr); 4642 memcpy(cp.link_key, key->val, HCI_LINK_KEY_SIZE); 4643 4644 hci_send_cmd(hdev, HCI_OP_LINK_KEY_REPLY, sizeof(cp), &cp); 4645 4646 hci_dev_unlock(hdev); 4647 4648 return; 4649 4650 not_found: 4651 hci_send_cmd(hdev, HCI_OP_LINK_KEY_NEG_REPLY, 6, &ev->bdaddr); 4652 hci_dev_unlock(hdev); 4653 } 4654 4655 static void hci_link_key_notify_evt(struct hci_dev *hdev, void *data, 4656 struct sk_buff *skb) 4657 { 4658 struct hci_ev_link_key_notify *ev = data; 4659 struct hci_conn *conn; 4660 struct link_key *key; 4661 bool persistent; 4662 u8 pin_len = 0; 4663 4664 bt_dev_dbg(hdev, ""); 4665 4666 hci_dev_lock(hdev); 4667 4668 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr); 4669 if (!conn) 4670 goto unlock; 4671 4672 /* Ignore NULL link key against CVE-2020-26555 */ 4673 if (!crypto_memneq(ev->link_key, ZERO_KEY, HCI_LINK_KEY_SIZE)) { 4674 bt_dev_dbg(hdev, "Ignore NULL link key (ZERO KEY) for %pMR", 4675 &ev->bdaddr); 4676 hci_disconnect(conn, HCI_ERROR_AUTH_FAILURE); 4677 hci_conn_drop(conn); 4678 goto unlock; 4679 } 4680 4681 hci_conn_hold(conn); 4682 conn->disc_timeout = HCI_DISCONN_TIMEOUT; 4683 hci_conn_drop(conn); 4684 4685 set_bit(HCI_CONN_NEW_LINK_KEY, &conn->flags); 4686 conn_set_key(conn, ev->key_type, conn->pin_length); 4687 4688 if (!hci_dev_test_flag(hdev, HCI_MGMT)) 4689 goto unlock; 4690 4691 key = hci_add_link_key(hdev, conn, &ev->bdaddr, ev->link_key, 4692 ev->key_type, pin_len, &persistent); 4693 if (!key) 4694 goto unlock; 4695 4696 /* Update connection information since adding the key will have 4697 * fixed up the type in the case of changed combination keys. 4698 */ 4699 if (ev->key_type == HCI_LK_CHANGED_COMBINATION) 4700 conn_set_key(conn, key->type, key->pin_len); 4701 4702 mgmt_new_link_key(hdev, key, persistent); 4703 4704 /* Keep debug keys around only if the HCI_KEEP_DEBUG_KEYS flag 4705 * is set. If it's not set simply remove the key from the kernel 4706 * list (we've still notified user space about it but with 4707 * store_hint being 0). 4708 */ 4709 if (key->type == HCI_LK_DEBUG_COMBINATION && 4710 !hci_dev_test_flag(hdev, HCI_KEEP_DEBUG_KEYS)) { 4711 list_del_rcu(&key->list); 4712 kfree_rcu(key, rcu); 4713 goto unlock; 4714 } 4715 4716 if (persistent) 4717 clear_bit(HCI_CONN_FLUSH_KEY, &conn->flags); 4718 else 4719 set_bit(HCI_CONN_FLUSH_KEY, &conn->flags); 4720 4721 unlock: 4722 hci_dev_unlock(hdev); 4723 } 4724 4725 static void hci_clock_offset_evt(struct hci_dev *hdev, void *data, 4726 struct sk_buff *skb) 4727 { 4728 struct hci_ev_clock_offset *ev = data; 4729 struct hci_conn *conn; 4730 4731 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 4732 4733 hci_dev_lock(hdev); 4734 4735 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle)); 4736 if (conn && !ev->status) { 4737 struct inquiry_entry *ie; 4738 4739 ie = hci_inquiry_cache_lookup(hdev, &conn->dst); 4740 if (ie) { 4741 ie->data.clock_offset = ev->clock_offset; 4742 ie->timestamp = jiffies; 4743 } 4744 } 4745 4746 hci_dev_unlock(hdev); 4747 } 4748 4749 static void hci_pkt_type_change_evt(struct hci_dev *hdev, void *data, 4750 struct sk_buff *skb) 4751 { 4752 struct hci_ev_pkt_type_change *ev = data; 4753 struct hci_conn *conn; 4754 4755 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 4756 4757 hci_dev_lock(hdev); 4758 4759 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle)); 4760 if (conn && !ev->status) 4761 conn->pkt_type = __le16_to_cpu(ev->pkt_type); 4762 4763 hci_dev_unlock(hdev); 4764 } 4765 4766 static void hci_pscan_rep_mode_evt(struct hci_dev *hdev, void *data, 4767 struct sk_buff *skb) 4768 { 4769 struct hci_ev_pscan_rep_mode *ev = data; 4770 struct inquiry_entry *ie; 4771 4772 bt_dev_dbg(hdev, ""); 4773 4774 hci_dev_lock(hdev); 4775 4776 ie = hci_inquiry_cache_lookup(hdev, &ev->bdaddr); 4777 if (ie) { 4778 ie->data.pscan_rep_mode = ev->pscan_rep_mode; 4779 ie->timestamp = jiffies; 4780 } 4781 4782 hci_dev_unlock(hdev); 4783 } 4784 4785 static void hci_inquiry_result_with_rssi_evt(struct hci_dev *hdev, void *edata, 4786 struct sk_buff *skb) 4787 { 4788 struct hci_ev_inquiry_result_rssi *ev = edata; 4789 struct inquiry_data data; 4790 int i; 4791 4792 bt_dev_dbg(hdev, "num_rsp %d", ev->num); 4793 4794 if (!ev->num) 4795 return; 4796 4797 if (hci_dev_test_flag(hdev, HCI_PERIODIC_INQ)) 4798 return; 4799 4800 hci_dev_lock(hdev); 4801 4802 if (skb->len == array_size(ev->num, 4803 sizeof(struct inquiry_info_rssi_pscan))) { 4804 struct inquiry_info_rssi_pscan *info; 4805 4806 for (i = 0; i < ev->num; i++) { 4807 u32 flags; 4808 4809 info = hci_ev_skb_pull(hdev, skb, 4810 HCI_EV_INQUIRY_RESULT_WITH_RSSI, 4811 sizeof(*info)); 4812 if (!info) { 4813 bt_dev_err(hdev, "Malformed HCI Event: 0x%2.2x", 4814 HCI_EV_INQUIRY_RESULT_WITH_RSSI); 4815 goto unlock; 4816 } 4817 4818 bacpy(&data.bdaddr, &info->bdaddr); 4819 data.pscan_rep_mode = info->pscan_rep_mode; 4820 data.pscan_period_mode = info->pscan_period_mode; 4821 data.pscan_mode = info->pscan_mode; 4822 memcpy(data.dev_class, info->dev_class, 3); 4823 data.clock_offset = info->clock_offset; 4824 data.rssi = info->rssi; 4825 data.ssp_mode = 0x00; 4826 4827 flags = hci_inquiry_cache_update(hdev, &data, false); 4828 4829 mgmt_device_found(hdev, &info->bdaddr, ACL_LINK, 0x00, 4830 info->dev_class, info->rssi, 4831 flags, NULL, 0, NULL, 0, 0); 4832 } 4833 } else if (skb->len == array_size(ev->num, 4834 sizeof(struct inquiry_info_rssi))) { 4835 struct inquiry_info_rssi *info; 4836 4837 for (i = 0; i < ev->num; i++) { 4838 u32 flags; 4839 4840 info = hci_ev_skb_pull(hdev, skb, 4841 HCI_EV_INQUIRY_RESULT_WITH_RSSI, 4842 sizeof(*info)); 4843 if (!info) { 4844 bt_dev_err(hdev, "Malformed HCI Event: 0x%2.2x", 4845 HCI_EV_INQUIRY_RESULT_WITH_RSSI); 4846 goto unlock; 4847 } 4848 4849 bacpy(&data.bdaddr, &info->bdaddr); 4850 data.pscan_rep_mode = info->pscan_rep_mode; 4851 data.pscan_period_mode = info->pscan_period_mode; 4852 data.pscan_mode = 0x00; 4853 memcpy(data.dev_class, info->dev_class, 3); 4854 data.clock_offset = info->clock_offset; 4855 data.rssi = info->rssi; 4856 data.ssp_mode = 0x00; 4857 4858 flags = hci_inquiry_cache_update(hdev, &data, false); 4859 4860 mgmt_device_found(hdev, &info->bdaddr, ACL_LINK, 0x00, 4861 info->dev_class, info->rssi, 4862 flags, NULL, 0, NULL, 0, 0); 4863 } 4864 } else { 4865 bt_dev_err(hdev, "Malformed HCI Event: 0x%2.2x", 4866 HCI_EV_INQUIRY_RESULT_WITH_RSSI); 4867 } 4868 unlock: 4869 hci_dev_unlock(hdev); 4870 } 4871 4872 static void hci_remote_ext_features_evt(struct hci_dev *hdev, void *data, 4873 struct sk_buff *skb) 4874 { 4875 struct hci_ev_remote_ext_features *ev = data; 4876 struct hci_conn *conn; 4877 4878 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 4879 4880 hci_dev_lock(hdev); 4881 4882 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle)); 4883 if (!conn) 4884 goto unlock; 4885 4886 if (ev->page < HCI_MAX_PAGES) 4887 memcpy(conn->features[ev->page], ev->features, 8); 4888 4889 if (!ev->status && ev->page == 0x01) { 4890 struct inquiry_entry *ie; 4891 4892 ie = hci_inquiry_cache_lookup(hdev, &conn->dst); 4893 if (ie) 4894 ie->data.ssp_mode = (ev->features[0] & LMP_HOST_SSP); 4895 4896 if (ev->features[0] & LMP_HOST_SSP) { 4897 set_bit(HCI_CONN_SSP_ENABLED, &conn->flags); 4898 } else { 4899 /* It is mandatory by the Bluetooth specification that 4900 * Extended Inquiry Results are only used when Secure 4901 * Simple Pairing is enabled, but some devices violate 4902 * this. 4903 * 4904 * To make these devices work, the internal SSP 4905 * enabled flag needs to be cleared if the remote host 4906 * features do not indicate SSP support */ 4907 clear_bit(HCI_CONN_SSP_ENABLED, &conn->flags); 4908 } 4909 4910 if (ev->features[0] & LMP_HOST_SC) 4911 set_bit(HCI_CONN_SC_ENABLED, &conn->flags); 4912 } 4913 4914 if (conn->state != BT_CONFIG) 4915 goto unlock; 4916 4917 if (!ev->status && !test_bit(HCI_CONN_MGMT_CONNECTED, &conn->flags)) { 4918 struct hci_cp_remote_name_req cp; 4919 memset(&cp, 0, sizeof(cp)); 4920 bacpy(&cp.bdaddr, &conn->dst); 4921 cp.pscan_rep_mode = 0x02; 4922 hci_send_cmd(hdev, HCI_OP_REMOTE_NAME_REQ, sizeof(cp), &cp); 4923 } else { 4924 mgmt_device_connected(hdev, conn, NULL, 0); 4925 } 4926 4927 if (!hci_outgoing_auth_needed(hdev, conn)) { 4928 conn->state = BT_CONNECTED; 4929 hci_connect_cfm(conn, ev->status); 4930 hci_conn_drop(conn); 4931 } 4932 4933 unlock: 4934 hci_dev_unlock(hdev); 4935 } 4936 4937 static void hci_sync_conn_complete_evt(struct hci_dev *hdev, void *data, 4938 struct sk_buff *skb) 4939 { 4940 struct hci_ev_sync_conn_complete *ev = data; 4941 struct hci_conn *conn; 4942 u8 status = ev->status; 4943 4944 switch (ev->link_type) { 4945 case SCO_LINK: 4946 case ESCO_LINK: 4947 break; 4948 default: 4949 /* As per Core 5.3 Vol 4 Part E 7.7.35 (p.2219), Link_Type 4950 * for HCI_Synchronous_Connection_Complete is limited to 4951 * either SCO or eSCO 4952 */ 4953 bt_dev_err(hdev, "Ignoring connect complete event for invalid link type"); 4954 return; 4955 } 4956 4957 bt_dev_dbg(hdev, "status 0x%2.2x", status); 4958 4959 hci_dev_lock(hdev); 4960 4961 conn = hci_conn_hash_lookup_ba(hdev, ev->link_type, &ev->bdaddr); 4962 if (!conn) { 4963 if (ev->link_type == ESCO_LINK) 4964 goto unlock; 4965 4966 /* When the link type in the event indicates SCO connection 4967 * and lookup of the connection object fails, then check 4968 * if an eSCO connection object exists. 4969 * 4970 * The core limits the synchronous connections to either 4971 * SCO or eSCO. The eSCO connection is preferred and tried 4972 * to be setup first and until successfully established, 4973 * the link type will be hinted as eSCO. 4974 */ 4975 conn = hci_conn_hash_lookup_ba(hdev, ESCO_LINK, &ev->bdaddr); 4976 if (!conn) 4977 goto unlock; 4978 } 4979 4980 /* The HCI_Synchronous_Connection_Complete event is only sent once per connection. 4981 * Processing it more than once per connection can corrupt kernel memory. 4982 * 4983 * As the connection handle is set here for the first time, it indicates 4984 * whether the connection is already set up. 4985 */ 4986 if (!HCI_CONN_HANDLE_UNSET(conn->handle)) { 4987 bt_dev_err(hdev, "Ignoring HCI_Sync_Conn_Complete event for existing connection"); 4988 goto unlock; 4989 } 4990 4991 switch (status) { 4992 case 0x00: 4993 status = hci_conn_set_handle(conn, __le16_to_cpu(ev->handle)); 4994 if (status) { 4995 conn->state = BT_CLOSED; 4996 break; 4997 } 4998 4999 conn->state = BT_CONNECTED; 5000 conn->type = ev->link_type; 5001 5002 hci_debugfs_create_conn(conn); 5003 hci_conn_add_sysfs(conn); 5004 break; 5005 5006 case 0x10: /* Connection Accept Timeout */ 5007 case 0x0d: /* Connection Rejected due to Limited Resources */ 5008 case 0x11: /* Unsupported Feature or Parameter Value */ 5009 case 0x1c: /* SCO interval rejected */ 5010 case 0x1a: /* Unsupported Remote Feature */ 5011 case 0x1e: /* Invalid LMP Parameters */ 5012 case 0x1f: /* Unspecified error */ 5013 case 0x20: /* Unsupported LMP Parameter value */ 5014 if (conn->out) { 5015 conn->pkt_type = (hdev->esco_type & SCO_ESCO_MASK) | 5016 (hdev->esco_type & EDR_ESCO_MASK); 5017 if (hci_setup_sync(conn, conn->parent->handle)) 5018 goto unlock; 5019 } 5020 fallthrough; 5021 5022 default: 5023 conn->state = BT_CLOSED; 5024 break; 5025 } 5026 5027 bt_dev_dbg(hdev, "SCO connected with air mode: %02x", ev->air_mode); 5028 /* Notify only in case of SCO over HCI transport data path which 5029 * is zero and non-zero value shall be non-HCI transport data path 5030 */ 5031 if (conn->codec.data_path == 0 && hdev->notify) { 5032 switch (ev->air_mode) { 5033 case 0x02: 5034 hdev->notify(hdev, HCI_NOTIFY_ENABLE_SCO_CVSD); 5035 break; 5036 case 0x03: 5037 hdev->notify(hdev, HCI_NOTIFY_ENABLE_SCO_TRANSP); 5038 break; 5039 } 5040 } 5041 5042 hci_connect_cfm(conn, status); 5043 if (status) 5044 hci_conn_del(conn); 5045 5046 unlock: 5047 hci_dev_unlock(hdev); 5048 } 5049 5050 static inline size_t eir_get_length(u8 *eir, size_t eir_len) 5051 { 5052 size_t parsed = 0; 5053 5054 while (parsed < eir_len) { 5055 u8 field_len = eir[0]; 5056 5057 if (field_len == 0) 5058 return parsed; 5059 5060 parsed += field_len + 1; 5061 eir += field_len + 1; 5062 } 5063 5064 return eir_len; 5065 } 5066 5067 static void hci_extended_inquiry_result_evt(struct hci_dev *hdev, void *edata, 5068 struct sk_buff *skb) 5069 { 5070 struct hci_ev_ext_inquiry_result *ev = edata; 5071 struct inquiry_data data; 5072 size_t eir_len; 5073 int i; 5074 5075 if (!hci_ev_skb_pull(hdev, skb, HCI_EV_EXTENDED_INQUIRY_RESULT, 5076 flex_array_size(ev, info, ev->num))) 5077 return; 5078 5079 bt_dev_dbg(hdev, "num %d", ev->num); 5080 5081 if (!ev->num) 5082 return; 5083 5084 if (hci_dev_test_flag(hdev, HCI_PERIODIC_INQ)) 5085 return; 5086 5087 hci_dev_lock(hdev); 5088 5089 for (i = 0; i < ev->num; i++) { 5090 struct extended_inquiry_info *info = &ev->info[i]; 5091 u32 flags; 5092 bool name_known; 5093 5094 bacpy(&data.bdaddr, &info->bdaddr); 5095 data.pscan_rep_mode = info->pscan_rep_mode; 5096 data.pscan_period_mode = info->pscan_period_mode; 5097 data.pscan_mode = 0x00; 5098 memcpy(data.dev_class, info->dev_class, 3); 5099 data.clock_offset = info->clock_offset; 5100 data.rssi = info->rssi; 5101 data.ssp_mode = 0x01; 5102 5103 if (hci_dev_test_flag(hdev, HCI_MGMT)) 5104 name_known = eir_get_data(info->data, 5105 sizeof(info->data), 5106 EIR_NAME_COMPLETE, NULL); 5107 else 5108 name_known = true; 5109 5110 flags = hci_inquiry_cache_update(hdev, &data, name_known); 5111 5112 eir_len = eir_get_length(info->data, sizeof(info->data)); 5113 5114 mgmt_device_found(hdev, &info->bdaddr, ACL_LINK, 0x00, 5115 info->dev_class, info->rssi, 5116 flags, info->data, eir_len, NULL, 0, 0); 5117 } 5118 5119 hci_dev_unlock(hdev); 5120 } 5121 5122 static void hci_key_refresh_complete_evt(struct hci_dev *hdev, void *data, 5123 struct sk_buff *skb) 5124 { 5125 struct hci_ev_key_refresh_complete *ev = data; 5126 struct hci_conn *conn; 5127 5128 bt_dev_dbg(hdev, "status 0x%2.2x handle 0x%4.4x", ev->status, 5129 __le16_to_cpu(ev->handle)); 5130 5131 hci_dev_lock(hdev); 5132 5133 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle)); 5134 if (!conn) 5135 goto unlock; 5136 5137 /* For BR/EDR the necessary steps are taken through the 5138 * auth_complete event. 5139 */ 5140 if (conn->type != LE_LINK) 5141 goto unlock; 5142 5143 if (!ev->status) 5144 conn->sec_level = conn->pending_sec_level; 5145 5146 clear_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags); 5147 5148 if (ev->status && conn->state == BT_CONNECTED) { 5149 hci_disconnect(conn, HCI_ERROR_AUTH_FAILURE); 5150 hci_conn_drop(conn); 5151 goto unlock; 5152 } 5153 5154 if (conn->state == BT_CONFIG) { 5155 if (!ev->status) 5156 conn->state = BT_CONNECTED; 5157 5158 hci_connect_cfm(conn, ev->status); 5159 hci_conn_drop(conn); 5160 } else { 5161 hci_auth_cfm(conn, ev->status); 5162 5163 hci_conn_hold(conn); 5164 conn->disc_timeout = HCI_DISCONN_TIMEOUT; 5165 hci_conn_drop(conn); 5166 } 5167 5168 unlock: 5169 hci_dev_unlock(hdev); 5170 } 5171 5172 static u8 hci_get_auth_req(struct hci_conn *conn) 5173 { 5174 /* If remote requests no-bonding follow that lead */ 5175 if (conn->remote_auth == HCI_AT_NO_BONDING || 5176 conn->remote_auth == HCI_AT_NO_BONDING_MITM) 5177 return conn->remote_auth | (conn->auth_type & 0x01); 5178 5179 /* If both remote and local have enough IO capabilities, require 5180 * MITM protection 5181 */ 5182 if (conn->remote_cap != HCI_IO_NO_INPUT_OUTPUT && 5183 conn->io_capability != HCI_IO_NO_INPUT_OUTPUT) 5184 return conn->remote_auth | 0x01; 5185 5186 /* No MITM protection possible so ignore remote requirement */ 5187 return (conn->remote_auth & ~0x01) | (conn->auth_type & 0x01); 5188 } 5189 5190 static u8 bredr_oob_data_present(struct hci_conn *conn) 5191 { 5192 struct hci_dev *hdev = conn->hdev; 5193 struct oob_data *data; 5194 5195 data = hci_find_remote_oob_data(hdev, &conn->dst, BDADDR_BREDR); 5196 if (!data) 5197 return 0x00; 5198 5199 if (bredr_sc_enabled(hdev)) { 5200 /* When Secure Connections is enabled, then just 5201 * return the present value stored with the OOB 5202 * data. The stored value contains the right present 5203 * information. However it can only be trusted when 5204 * not in Secure Connection Only mode. 5205 */ 5206 if (!hci_dev_test_flag(hdev, HCI_SC_ONLY)) 5207 return data->present; 5208 5209 /* When Secure Connections Only mode is enabled, then 5210 * the P-256 values are required. If they are not 5211 * available, then do not declare that OOB data is 5212 * present. 5213 */ 5214 if (!crypto_memneq(data->rand256, ZERO_KEY, 16) || 5215 !crypto_memneq(data->hash256, ZERO_KEY, 16)) 5216 return 0x00; 5217 5218 return 0x02; 5219 } 5220 5221 /* When Secure Connections is not enabled or actually 5222 * not supported by the hardware, then check that if 5223 * P-192 data values are present. 5224 */ 5225 if (!crypto_memneq(data->rand192, ZERO_KEY, 16) || 5226 !crypto_memneq(data->hash192, ZERO_KEY, 16)) 5227 return 0x00; 5228 5229 return 0x01; 5230 } 5231 5232 static void hci_io_capa_request_evt(struct hci_dev *hdev, void *data, 5233 struct sk_buff *skb) 5234 { 5235 struct hci_ev_io_capa_request *ev = data; 5236 struct hci_conn *conn; 5237 5238 bt_dev_dbg(hdev, ""); 5239 5240 hci_dev_lock(hdev); 5241 5242 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr); 5243 if (!conn || !hci_dev_test_flag(hdev, HCI_SSP_ENABLED)) 5244 goto unlock; 5245 5246 /* Assume remote supports SSP since it has triggered this event */ 5247 set_bit(HCI_CONN_SSP_ENABLED, &conn->flags); 5248 5249 hci_conn_hold(conn); 5250 5251 if (!hci_dev_test_flag(hdev, HCI_MGMT)) 5252 goto unlock; 5253 5254 /* Allow pairing if we're pairable, the initiators of the 5255 * pairing or if the remote is not requesting bonding. 5256 */ 5257 if (hci_dev_test_flag(hdev, HCI_BONDABLE) || 5258 test_bit(HCI_CONN_AUTH_INITIATOR, &conn->flags) || 5259 (conn->remote_auth & ~0x01) == HCI_AT_NO_BONDING) { 5260 struct hci_cp_io_capability_reply cp; 5261 5262 bacpy(&cp.bdaddr, &ev->bdaddr); 5263 /* Change the IO capability from KeyboardDisplay 5264 * to DisplayYesNo as it is not supported by BT spec. */ 5265 cp.capability = (conn->io_capability == 0x04) ? 5266 HCI_IO_DISPLAY_YESNO : conn->io_capability; 5267 5268 /* If we are initiators, there is no remote information yet */ 5269 if (conn->remote_auth == 0xff) { 5270 /* Request MITM protection if our IO caps allow it 5271 * except for the no-bonding case. 5272 */ 5273 if (conn->io_capability != HCI_IO_NO_INPUT_OUTPUT && 5274 conn->auth_type != HCI_AT_NO_BONDING) 5275 conn->auth_type |= 0x01; 5276 } else { 5277 conn->auth_type = hci_get_auth_req(conn); 5278 } 5279 5280 /* If we're not bondable, force one of the non-bondable 5281 * authentication requirement values. 5282 */ 5283 if (!hci_dev_test_flag(hdev, HCI_BONDABLE)) 5284 conn->auth_type &= HCI_AT_NO_BONDING_MITM; 5285 5286 cp.authentication = conn->auth_type; 5287 cp.oob_data = bredr_oob_data_present(conn); 5288 5289 hci_send_cmd(hdev, HCI_OP_IO_CAPABILITY_REPLY, 5290 sizeof(cp), &cp); 5291 } else { 5292 struct hci_cp_io_capability_neg_reply cp; 5293 5294 bacpy(&cp.bdaddr, &ev->bdaddr); 5295 cp.reason = HCI_ERROR_PAIRING_NOT_ALLOWED; 5296 5297 hci_send_cmd(hdev, HCI_OP_IO_CAPABILITY_NEG_REPLY, 5298 sizeof(cp), &cp); 5299 } 5300 5301 unlock: 5302 hci_dev_unlock(hdev); 5303 } 5304 5305 static void hci_io_capa_reply_evt(struct hci_dev *hdev, void *data, 5306 struct sk_buff *skb) 5307 { 5308 struct hci_ev_io_capa_reply *ev = data; 5309 struct hci_conn *conn; 5310 5311 bt_dev_dbg(hdev, ""); 5312 5313 hci_dev_lock(hdev); 5314 5315 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr); 5316 if (!conn) 5317 goto unlock; 5318 5319 conn->remote_cap = ev->capability; 5320 conn->remote_auth = ev->authentication; 5321 5322 unlock: 5323 hci_dev_unlock(hdev); 5324 } 5325 5326 static void hci_user_confirm_request_evt(struct hci_dev *hdev, void *data, 5327 struct sk_buff *skb) 5328 { 5329 struct hci_ev_user_confirm_req *ev = data; 5330 int loc_mitm, rem_mitm, confirm_hint = 0; 5331 struct hci_conn *conn; 5332 5333 bt_dev_dbg(hdev, ""); 5334 5335 hci_dev_lock(hdev); 5336 5337 if (!hci_dev_test_flag(hdev, HCI_MGMT)) 5338 goto unlock; 5339 5340 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr); 5341 if (!conn) 5342 goto unlock; 5343 5344 loc_mitm = (conn->auth_type & 0x01); 5345 rem_mitm = (conn->remote_auth & 0x01); 5346 5347 /* If we require MITM but the remote device can't provide that 5348 * (it has NoInputNoOutput) then reject the confirmation 5349 * request. We check the security level here since it doesn't 5350 * necessarily match conn->auth_type. 5351 */ 5352 if (conn->pending_sec_level > BT_SECURITY_MEDIUM && 5353 conn->remote_cap == HCI_IO_NO_INPUT_OUTPUT) { 5354 bt_dev_dbg(hdev, "Rejecting request: remote device can't provide MITM"); 5355 hci_send_cmd(hdev, HCI_OP_USER_CONFIRM_NEG_REPLY, 5356 sizeof(ev->bdaddr), &ev->bdaddr); 5357 goto unlock; 5358 } 5359 5360 /* If no side requires MITM protection; use JUST_CFM method */ 5361 if ((!loc_mitm || conn->remote_cap == HCI_IO_NO_INPUT_OUTPUT) && 5362 (!rem_mitm || conn->io_capability == HCI_IO_NO_INPUT_OUTPUT)) { 5363 5364 /* If we're not the initiator of request authorization and the 5365 * local IO capability is not NoInputNoOutput, use JUST_WORKS 5366 * method (mgmt_user_confirm with confirm_hint set to 1). 5367 */ 5368 if (!test_bit(HCI_CONN_AUTH_PEND, &conn->flags) && 5369 conn->io_capability != HCI_IO_NO_INPUT_OUTPUT) { 5370 bt_dev_dbg(hdev, "Confirming auto-accept as acceptor"); 5371 confirm_hint = 1; 5372 goto confirm; 5373 } 5374 5375 /* If there already exists link key in local host, leave the 5376 * decision to user space since the remote device could be 5377 * legitimate or malicious. 5378 */ 5379 if (hci_find_link_key(hdev, &ev->bdaddr)) { 5380 bt_dev_dbg(hdev, "Local host already has link key"); 5381 confirm_hint = 1; 5382 goto confirm; 5383 } 5384 5385 BT_DBG("Auto-accept of user confirmation with %ums delay", 5386 hdev->auto_accept_delay); 5387 5388 if (hdev->auto_accept_delay > 0) { 5389 int delay = msecs_to_jiffies(hdev->auto_accept_delay); 5390 queue_delayed_work(conn->hdev->workqueue, 5391 &conn->auto_accept_work, delay); 5392 goto unlock; 5393 } 5394 5395 hci_send_cmd(hdev, HCI_OP_USER_CONFIRM_REPLY, 5396 sizeof(ev->bdaddr), &ev->bdaddr); 5397 goto unlock; 5398 } 5399 5400 confirm: 5401 mgmt_user_confirm_request(hdev, &ev->bdaddr, ACL_LINK, 0, 5402 le32_to_cpu(ev->passkey), confirm_hint); 5403 5404 unlock: 5405 hci_dev_unlock(hdev); 5406 } 5407 5408 static void hci_user_passkey_request_evt(struct hci_dev *hdev, void *data, 5409 struct sk_buff *skb) 5410 { 5411 struct hci_ev_user_passkey_req *ev = data; 5412 5413 bt_dev_dbg(hdev, ""); 5414 5415 if (hci_dev_test_flag(hdev, HCI_MGMT)) 5416 mgmt_user_passkey_request(hdev, &ev->bdaddr, ACL_LINK, 0); 5417 } 5418 5419 static void hci_user_passkey_notify_evt(struct hci_dev *hdev, void *data, 5420 struct sk_buff *skb) 5421 { 5422 struct hci_ev_user_passkey_notify *ev = data; 5423 struct hci_conn *conn; 5424 5425 bt_dev_dbg(hdev, ""); 5426 5427 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr); 5428 if (!conn) 5429 return; 5430 5431 conn->passkey_notify = __le32_to_cpu(ev->passkey); 5432 conn->passkey_entered = 0; 5433 5434 if (hci_dev_test_flag(hdev, HCI_MGMT)) 5435 mgmt_user_passkey_notify(hdev, &conn->dst, conn->type, 5436 conn->dst_type, conn->passkey_notify, 5437 conn->passkey_entered); 5438 } 5439 5440 static void hci_keypress_notify_evt(struct hci_dev *hdev, void *data, 5441 struct sk_buff *skb) 5442 { 5443 struct hci_ev_keypress_notify *ev = data; 5444 struct hci_conn *conn; 5445 5446 bt_dev_dbg(hdev, ""); 5447 5448 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr); 5449 if (!conn) 5450 return; 5451 5452 switch (ev->type) { 5453 case HCI_KEYPRESS_STARTED: 5454 conn->passkey_entered = 0; 5455 return; 5456 5457 case HCI_KEYPRESS_ENTERED: 5458 conn->passkey_entered++; 5459 break; 5460 5461 case HCI_KEYPRESS_ERASED: 5462 conn->passkey_entered--; 5463 break; 5464 5465 case HCI_KEYPRESS_CLEARED: 5466 conn->passkey_entered = 0; 5467 break; 5468 5469 case HCI_KEYPRESS_COMPLETED: 5470 return; 5471 } 5472 5473 if (hci_dev_test_flag(hdev, HCI_MGMT)) 5474 mgmt_user_passkey_notify(hdev, &conn->dst, conn->type, 5475 conn->dst_type, conn->passkey_notify, 5476 conn->passkey_entered); 5477 } 5478 5479 static void hci_simple_pair_complete_evt(struct hci_dev *hdev, void *data, 5480 struct sk_buff *skb) 5481 { 5482 struct hci_ev_simple_pair_complete *ev = data; 5483 struct hci_conn *conn; 5484 5485 bt_dev_dbg(hdev, ""); 5486 5487 hci_dev_lock(hdev); 5488 5489 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr); 5490 if (!conn || !hci_conn_ssp_enabled(conn)) 5491 goto unlock; 5492 5493 /* Reset the authentication requirement to unknown */ 5494 conn->remote_auth = 0xff; 5495 5496 /* To avoid duplicate auth_failed events to user space we check 5497 * the HCI_CONN_AUTH_PEND flag which will be set if we 5498 * initiated the authentication. A traditional auth_complete 5499 * event gets always produced as initiator and is also mapped to 5500 * the mgmt_auth_failed event */ 5501 if (!test_bit(HCI_CONN_AUTH_PEND, &conn->flags) && ev->status) 5502 mgmt_auth_failed(conn, ev->status); 5503 5504 hci_conn_drop(conn); 5505 5506 unlock: 5507 hci_dev_unlock(hdev); 5508 } 5509 5510 static void hci_remote_host_features_evt(struct hci_dev *hdev, void *data, 5511 struct sk_buff *skb) 5512 { 5513 struct hci_ev_remote_host_features *ev = data; 5514 struct inquiry_entry *ie; 5515 struct hci_conn *conn; 5516 5517 bt_dev_dbg(hdev, ""); 5518 5519 hci_dev_lock(hdev); 5520 5521 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr); 5522 if (conn) 5523 memcpy(conn->features[1], ev->features, 8); 5524 5525 ie = hci_inquiry_cache_lookup(hdev, &ev->bdaddr); 5526 if (ie) 5527 ie->data.ssp_mode = (ev->features[0] & LMP_HOST_SSP); 5528 5529 hci_dev_unlock(hdev); 5530 } 5531 5532 static void hci_remote_oob_data_request_evt(struct hci_dev *hdev, void *edata, 5533 struct sk_buff *skb) 5534 { 5535 struct hci_ev_remote_oob_data_request *ev = edata; 5536 struct oob_data *data; 5537 5538 bt_dev_dbg(hdev, ""); 5539 5540 hci_dev_lock(hdev); 5541 5542 if (!hci_dev_test_flag(hdev, HCI_MGMT)) 5543 goto unlock; 5544 5545 data = hci_find_remote_oob_data(hdev, &ev->bdaddr, BDADDR_BREDR); 5546 if (!data) { 5547 struct hci_cp_remote_oob_data_neg_reply cp; 5548 5549 bacpy(&cp.bdaddr, &ev->bdaddr); 5550 hci_send_cmd(hdev, HCI_OP_REMOTE_OOB_DATA_NEG_REPLY, 5551 sizeof(cp), &cp); 5552 goto unlock; 5553 } 5554 5555 if (bredr_sc_enabled(hdev)) { 5556 struct hci_cp_remote_oob_ext_data_reply cp; 5557 5558 bacpy(&cp.bdaddr, &ev->bdaddr); 5559 if (hci_dev_test_flag(hdev, HCI_SC_ONLY)) { 5560 memset(cp.hash192, 0, sizeof(cp.hash192)); 5561 memset(cp.rand192, 0, sizeof(cp.rand192)); 5562 } else { 5563 memcpy(cp.hash192, data->hash192, sizeof(cp.hash192)); 5564 memcpy(cp.rand192, data->rand192, sizeof(cp.rand192)); 5565 } 5566 memcpy(cp.hash256, data->hash256, sizeof(cp.hash256)); 5567 memcpy(cp.rand256, data->rand256, sizeof(cp.rand256)); 5568 5569 hci_send_cmd(hdev, HCI_OP_REMOTE_OOB_EXT_DATA_REPLY, 5570 sizeof(cp), &cp); 5571 } else { 5572 struct hci_cp_remote_oob_data_reply cp; 5573 5574 bacpy(&cp.bdaddr, &ev->bdaddr); 5575 memcpy(cp.hash, data->hash192, sizeof(cp.hash)); 5576 memcpy(cp.rand, data->rand192, sizeof(cp.rand)); 5577 5578 hci_send_cmd(hdev, HCI_OP_REMOTE_OOB_DATA_REPLY, 5579 sizeof(cp), &cp); 5580 } 5581 5582 unlock: 5583 hci_dev_unlock(hdev); 5584 } 5585 5586 static void le_conn_update_addr(struct hci_conn *conn, bdaddr_t *bdaddr, 5587 u8 bdaddr_type, bdaddr_t *local_rpa) 5588 { 5589 if (conn->out) { 5590 conn->dst_type = bdaddr_type; 5591 conn->resp_addr_type = bdaddr_type; 5592 bacpy(&conn->resp_addr, bdaddr); 5593 5594 /* Check if the controller has set a Local RPA then it must be 5595 * used instead or hdev->rpa. 5596 */ 5597 if (local_rpa && bacmp(local_rpa, BDADDR_ANY)) { 5598 conn->init_addr_type = ADDR_LE_DEV_RANDOM; 5599 bacpy(&conn->init_addr, local_rpa); 5600 } else if (hci_dev_test_flag(conn->hdev, HCI_PRIVACY)) { 5601 conn->init_addr_type = ADDR_LE_DEV_RANDOM; 5602 bacpy(&conn->init_addr, &conn->hdev->rpa); 5603 } else { 5604 hci_copy_identity_address(conn->hdev, &conn->init_addr, 5605 &conn->init_addr_type); 5606 } 5607 } else { 5608 conn->resp_addr_type = conn->hdev->adv_addr_type; 5609 /* Check if the controller has set a Local RPA then it must be 5610 * used instead or hdev->rpa. 5611 */ 5612 if (local_rpa && bacmp(local_rpa, BDADDR_ANY)) { 5613 conn->resp_addr_type = ADDR_LE_DEV_RANDOM; 5614 bacpy(&conn->resp_addr, local_rpa); 5615 } else if (conn->hdev->adv_addr_type == ADDR_LE_DEV_RANDOM) { 5616 /* In case of ext adv, resp_addr will be updated in 5617 * Adv Terminated event. 5618 */ 5619 if (!ext_adv_capable(conn->hdev)) 5620 bacpy(&conn->resp_addr, 5621 &conn->hdev->random_addr); 5622 } else { 5623 bacpy(&conn->resp_addr, &conn->hdev->bdaddr); 5624 } 5625 5626 conn->init_addr_type = bdaddr_type; 5627 bacpy(&conn->init_addr, bdaddr); 5628 5629 /* For incoming connections, set the default minimum 5630 * and maximum connection interval. They will be used 5631 * to check if the parameters are in range and if not 5632 * trigger the connection update procedure. 5633 */ 5634 conn->le_conn_min_interval = conn->hdev->le_conn_min_interval; 5635 conn->le_conn_max_interval = conn->hdev->le_conn_max_interval; 5636 } 5637 } 5638 5639 static void le_conn_complete_evt(struct hci_dev *hdev, u8 status, 5640 bdaddr_t *bdaddr, u8 bdaddr_type, 5641 bdaddr_t *local_rpa, u8 role, u16 handle, 5642 u16 interval, u16 latency, 5643 u16 supervision_timeout) 5644 { 5645 struct hci_conn_params *params; 5646 struct hci_conn *conn; 5647 struct smp_irk *irk; 5648 u8 addr_type; 5649 5650 hci_dev_lock(hdev); 5651 5652 /* All controllers implicitly stop advertising in the event of a 5653 * connection, so ensure that the state bit is cleared. 5654 */ 5655 hci_dev_clear_flag(hdev, HCI_LE_ADV); 5656 5657 conn = hci_conn_hash_lookup_ba(hdev, LE_LINK, bdaddr); 5658 if (!conn) { 5659 /* In case of error status and there is no connection pending 5660 * just unlock as there is nothing to cleanup. 5661 */ 5662 if (status) 5663 goto unlock; 5664 5665 conn = hci_conn_add_unset(hdev, LE_LINK, bdaddr, role); 5666 if (IS_ERR(conn)) { 5667 bt_dev_err(hdev, "connection err: %ld", PTR_ERR(conn)); 5668 goto unlock; 5669 } 5670 5671 conn->dst_type = bdaddr_type; 5672 5673 /* If we didn't have a hci_conn object previously 5674 * but we're in central role this must be something 5675 * initiated using an accept list. Since accept list based 5676 * connections are not "first class citizens" we don't 5677 * have full tracking of them. Therefore, we go ahead 5678 * with a "best effort" approach of determining the 5679 * initiator address based on the HCI_PRIVACY flag. 5680 */ 5681 if (conn->out) { 5682 conn->resp_addr_type = bdaddr_type; 5683 bacpy(&conn->resp_addr, bdaddr); 5684 if (hci_dev_test_flag(hdev, HCI_PRIVACY)) { 5685 conn->init_addr_type = ADDR_LE_DEV_RANDOM; 5686 bacpy(&conn->init_addr, &hdev->rpa); 5687 } else { 5688 hci_copy_identity_address(hdev, 5689 &conn->init_addr, 5690 &conn->init_addr_type); 5691 } 5692 } 5693 } else { 5694 cancel_delayed_work(&conn->le_conn_timeout); 5695 } 5696 5697 /* The HCI_LE_Connection_Complete event is only sent once per connection. 5698 * Processing it more than once per connection can corrupt kernel memory. 5699 * 5700 * As the connection handle is set here for the first time, it indicates 5701 * whether the connection is already set up. 5702 */ 5703 if (!HCI_CONN_HANDLE_UNSET(conn->handle)) { 5704 bt_dev_err(hdev, "Ignoring HCI_Connection_Complete for existing connection"); 5705 goto unlock; 5706 } 5707 5708 le_conn_update_addr(conn, bdaddr, bdaddr_type, local_rpa); 5709 5710 /* Lookup the identity address from the stored connection 5711 * address and address type. 5712 * 5713 * When establishing connections to an identity address, the 5714 * connection procedure will store the resolvable random 5715 * address first. Now if it can be converted back into the 5716 * identity address, start using the identity address from 5717 * now on. 5718 */ 5719 irk = hci_get_irk(hdev, &conn->dst, conn->dst_type); 5720 if (irk) { 5721 bacpy(&conn->dst, &irk->bdaddr); 5722 conn->dst_type = irk->addr_type; 5723 } 5724 5725 conn->dst_type = ev_bdaddr_type(hdev, conn->dst_type, NULL); 5726 5727 /* All connection failure handling is taken care of by the 5728 * hci_conn_failed function which is triggered by the HCI 5729 * request completion callbacks used for connecting. 5730 */ 5731 if (status || hci_conn_set_handle(conn, handle)) 5732 goto unlock; 5733 5734 /* Drop the connection if it has been aborted */ 5735 if (test_bit(HCI_CONN_CANCEL, &conn->flags)) { 5736 hci_conn_drop(conn); 5737 goto unlock; 5738 } 5739 5740 if (conn->dst_type == ADDR_LE_DEV_PUBLIC) 5741 addr_type = BDADDR_LE_PUBLIC; 5742 else 5743 addr_type = BDADDR_LE_RANDOM; 5744 5745 /* Drop the connection if the device is blocked */ 5746 if (hci_bdaddr_list_lookup(&hdev->reject_list, &conn->dst, addr_type)) { 5747 hci_conn_drop(conn); 5748 goto unlock; 5749 } 5750 5751 mgmt_device_connected(hdev, conn, NULL, 0); 5752 5753 conn->sec_level = BT_SECURITY_LOW; 5754 conn->state = BT_CONFIG; 5755 5756 /* Store current advertising instance as connection advertising instance 5757 * when sotfware rotation is in use so it can be re-enabled when 5758 * disconnected. 5759 */ 5760 if (!ext_adv_capable(hdev)) 5761 conn->adv_instance = hdev->cur_adv_instance; 5762 5763 conn->le_conn_interval = interval; 5764 conn->le_conn_latency = latency; 5765 conn->le_supv_timeout = supervision_timeout; 5766 5767 hci_debugfs_create_conn(conn); 5768 hci_conn_add_sysfs(conn); 5769 5770 /* The remote features procedure is defined for central 5771 * role only. So only in case of an initiated connection 5772 * request the remote features. 5773 * 5774 * If the local controller supports peripheral-initiated features 5775 * exchange, then requesting the remote features in peripheral 5776 * role is possible. Otherwise just transition into the 5777 * connected state without requesting the remote features. 5778 */ 5779 if (conn->out || 5780 (hdev->le_features[0] & HCI_LE_PERIPHERAL_FEATURES)) { 5781 struct hci_cp_le_read_remote_features cp; 5782 5783 cp.handle = __cpu_to_le16(conn->handle); 5784 5785 hci_send_cmd(hdev, HCI_OP_LE_READ_REMOTE_FEATURES, 5786 sizeof(cp), &cp); 5787 5788 hci_conn_hold(conn); 5789 } else { 5790 conn->state = BT_CONNECTED; 5791 hci_connect_cfm(conn, status); 5792 } 5793 5794 params = hci_pend_le_action_lookup(&hdev->pend_le_conns, &conn->dst, 5795 conn->dst_type); 5796 if (params) { 5797 hci_pend_le_list_del_init(params); 5798 if (params->conn) { 5799 hci_conn_drop(params->conn); 5800 hci_conn_put(params->conn); 5801 params->conn = NULL; 5802 } 5803 } 5804 5805 unlock: 5806 hci_update_passive_scan(hdev); 5807 hci_dev_unlock(hdev); 5808 } 5809 5810 static void hci_le_conn_complete_evt(struct hci_dev *hdev, void *data, 5811 struct sk_buff *skb) 5812 { 5813 struct hci_ev_le_conn_complete *ev = data; 5814 5815 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 5816 5817 le_conn_complete_evt(hdev, ev->status, &ev->bdaddr, ev->bdaddr_type, 5818 NULL, ev->role, le16_to_cpu(ev->handle), 5819 le16_to_cpu(ev->interval), 5820 le16_to_cpu(ev->latency), 5821 le16_to_cpu(ev->supervision_timeout)); 5822 } 5823 5824 static void hci_le_enh_conn_complete_evt(struct hci_dev *hdev, void *data, 5825 struct sk_buff *skb) 5826 { 5827 struct hci_ev_le_enh_conn_complete *ev = data; 5828 5829 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 5830 5831 le_conn_complete_evt(hdev, ev->status, &ev->bdaddr, ev->bdaddr_type, 5832 &ev->local_rpa, ev->role, le16_to_cpu(ev->handle), 5833 le16_to_cpu(ev->interval), 5834 le16_to_cpu(ev->latency), 5835 le16_to_cpu(ev->supervision_timeout)); 5836 } 5837 5838 static void hci_le_ext_adv_term_evt(struct hci_dev *hdev, void *data, 5839 struct sk_buff *skb) 5840 { 5841 struct hci_evt_le_ext_adv_set_term *ev = data; 5842 struct hci_conn *conn; 5843 struct adv_info *adv, *n; 5844 5845 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 5846 5847 /* The Bluetooth Core 5.3 specification clearly states that this event 5848 * shall not be sent when the Host disables the advertising set. So in 5849 * case of HCI_ERROR_CANCELLED_BY_HOST, just ignore the event. 5850 * 5851 * When the Host disables an advertising set, all cleanup is done via 5852 * its command callback and not needed to be duplicated here. 5853 */ 5854 if (ev->status == HCI_ERROR_CANCELLED_BY_HOST) { 5855 bt_dev_warn_ratelimited(hdev, "Unexpected advertising set terminated event"); 5856 return; 5857 } 5858 5859 hci_dev_lock(hdev); 5860 5861 adv = hci_find_adv_instance(hdev, ev->handle); 5862 5863 if (ev->status) { 5864 if (!adv) 5865 goto unlock; 5866 5867 /* Remove advertising as it has been terminated */ 5868 hci_remove_adv_instance(hdev, ev->handle); 5869 mgmt_advertising_removed(NULL, hdev, ev->handle); 5870 5871 list_for_each_entry_safe(adv, n, &hdev->adv_instances, list) { 5872 if (adv->enabled) 5873 goto unlock; 5874 } 5875 5876 /* We are no longer advertising, clear HCI_LE_ADV */ 5877 hci_dev_clear_flag(hdev, HCI_LE_ADV); 5878 goto unlock; 5879 } 5880 5881 if (adv) 5882 adv->enabled = false; 5883 5884 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->conn_handle)); 5885 if (conn) { 5886 /* Store handle in the connection so the correct advertising 5887 * instance can be re-enabled when disconnected. 5888 */ 5889 conn->adv_instance = ev->handle; 5890 5891 if (hdev->adv_addr_type != ADDR_LE_DEV_RANDOM || 5892 bacmp(&conn->resp_addr, BDADDR_ANY)) 5893 goto unlock; 5894 5895 if (!ev->handle) { 5896 bacpy(&conn->resp_addr, &hdev->random_addr); 5897 goto unlock; 5898 } 5899 5900 if (adv) 5901 bacpy(&conn->resp_addr, &adv->random_addr); 5902 } 5903 5904 unlock: 5905 hci_dev_unlock(hdev); 5906 } 5907 5908 static void hci_le_conn_update_complete_evt(struct hci_dev *hdev, void *data, 5909 struct sk_buff *skb) 5910 { 5911 struct hci_ev_le_conn_update_complete *ev = data; 5912 struct hci_conn *conn; 5913 5914 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 5915 5916 if (ev->status) 5917 return; 5918 5919 hci_dev_lock(hdev); 5920 5921 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle)); 5922 if (conn) { 5923 conn->le_conn_interval = le16_to_cpu(ev->interval); 5924 conn->le_conn_latency = le16_to_cpu(ev->latency); 5925 conn->le_supv_timeout = le16_to_cpu(ev->supervision_timeout); 5926 } 5927 5928 hci_dev_unlock(hdev); 5929 } 5930 5931 /* This function requires the caller holds hdev->lock */ 5932 static struct hci_conn *check_pending_le_conn(struct hci_dev *hdev, 5933 bdaddr_t *addr, 5934 u8 addr_type, bool addr_resolved, 5935 u8 adv_type, u8 phy, u8 sec_phy) 5936 { 5937 struct hci_conn *conn; 5938 struct hci_conn_params *params; 5939 5940 /* If the event is not connectable don't proceed further */ 5941 if (adv_type != LE_ADV_IND && adv_type != LE_ADV_DIRECT_IND) 5942 return NULL; 5943 5944 /* Ignore if the device is blocked or hdev is suspended */ 5945 if (hci_bdaddr_list_lookup(&hdev->reject_list, addr, addr_type) || 5946 hdev->suspended) 5947 return NULL; 5948 5949 /* Most controller will fail if we try to create new connections 5950 * while we have an existing one in peripheral role. 5951 */ 5952 if (hdev->conn_hash.le_num_peripheral > 0 && 5953 (test_bit(HCI_QUIRK_BROKEN_LE_STATES, &hdev->quirks) || 5954 !(hdev->le_states[3] & 0x10))) 5955 return NULL; 5956 5957 /* If we're not connectable only connect devices that we have in 5958 * our pend_le_conns list. 5959 */ 5960 params = hci_pend_le_action_lookup(&hdev->pend_le_conns, addr, 5961 addr_type); 5962 if (!params) 5963 return NULL; 5964 5965 if (!params->explicit_connect) { 5966 switch (params->auto_connect) { 5967 case HCI_AUTO_CONN_DIRECT: 5968 /* Only devices advertising with ADV_DIRECT_IND are 5969 * triggering a connection attempt. This is allowing 5970 * incoming connections from peripheral devices. 5971 */ 5972 if (adv_type != LE_ADV_DIRECT_IND) 5973 return NULL; 5974 break; 5975 case HCI_AUTO_CONN_ALWAYS: 5976 /* Devices advertising with ADV_IND or ADV_DIRECT_IND 5977 * are triggering a connection attempt. This means 5978 * that incoming connections from peripheral device are 5979 * accepted and also outgoing connections to peripheral 5980 * devices are established when found. 5981 */ 5982 break; 5983 default: 5984 return NULL; 5985 } 5986 } 5987 5988 conn = hci_connect_le(hdev, addr, addr_type, addr_resolved, 5989 BT_SECURITY_LOW, hdev->def_le_autoconnect_timeout, 5990 HCI_ROLE_MASTER, phy, sec_phy); 5991 if (!IS_ERR(conn)) { 5992 /* If HCI_AUTO_CONN_EXPLICIT is set, conn is already owned 5993 * by higher layer that tried to connect, if no then 5994 * store the pointer since we don't really have any 5995 * other owner of the object besides the params that 5996 * triggered it. This way we can abort the connection if 5997 * the parameters get removed and keep the reference 5998 * count consistent once the connection is established. 5999 */ 6000 6001 if (!params->explicit_connect) 6002 params->conn = hci_conn_get(conn); 6003 6004 return conn; 6005 } 6006 6007 switch (PTR_ERR(conn)) { 6008 case -EBUSY: 6009 /* If hci_connect() returns -EBUSY it means there is already 6010 * an LE connection attempt going on. Since controllers don't 6011 * support more than one connection attempt at the time, we 6012 * don't consider this an error case. 6013 */ 6014 break; 6015 default: 6016 BT_DBG("Failed to connect: err %ld", PTR_ERR(conn)); 6017 return NULL; 6018 } 6019 6020 return NULL; 6021 } 6022 6023 static void process_adv_report(struct hci_dev *hdev, u8 type, bdaddr_t *bdaddr, 6024 u8 bdaddr_type, bdaddr_t *direct_addr, 6025 u8 direct_addr_type, u8 phy, u8 sec_phy, s8 rssi, 6026 u8 *data, u8 len, bool ext_adv, bool ctl_time, 6027 u64 instant) 6028 { 6029 struct discovery_state *d = &hdev->discovery; 6030 struct smp_irk *irk; 6031 struct hci_conn *conn; 6032 bool match, bdaddr_resolved; 6033 u32 flags; 6034 u8 *ptr; 6035 6036 switch (type) { 6037 case LE_ADV_IND: 6038 case LE_ADV_DIRECT_IND: 6039 case LE_ADV_SCAN_IND: 6040 case LE_ADV_NONCONN_IND: 6041 case LE_ADV_SCAN_RSP: 6042 break; 6043 default: 6044 bt_dev_err_ratelimited(hdev, "unknown advertising packet " 6045 "type: 0x%02x", type); 6046 return; 6047 } 6048 6049 if (len > max_adv_len(hdev)) { 6050 bt_dev_err_ratelimited(hdev, 6051 "adv larger than maximum supported"); 6052 return; 6053 } 6054 6055 /* Find the end of the data in case the report contains padded zero 6056 * bytes at the end causing an invalid length value. 6057 * 6058 * When data is NULL, len is 0 so there is no need for extra ptr 6059 * check as 'ptr < data + 0' is already false in such case. 6060 */ 6061 for (ptr = data; ptr < data + len && *ptr; ptr += *ptr + 1) { 6062 if (ptr + 1 + *ptr > data + len) 6063 break; 6064 } 6065 6066 /* Adjust for actual length. This handles the case when remote 6067 * device is advertising with incorrect data length. 6068 */ 6069 len = ptr - data; 6070 6071 /* If the direct address is present, then this report is from 6072 * a LE Direct Advertising Report event. In that case it is 6073 * important to see if the address is matching the local 6074 * controller address. 6075 * 6076 * If local privacy is not enable the controller shall not be 6077 * generating such event since according to its documentation it is only 6078 * valid for filter_policy 0x02 and 0x03, but the fact that it did 6079 * generate LE Direct Advertising Report means it is probably broken and 6080 * won't generate any other event which can potentially break 6081 * auto-connect logic so in case local privacy is not enable this 6082 * ignores the direct_addr so it works as a regular report. 6083 */ 6084 if (!hci_dev_test_flag(hdev, HCI_MESH) && direct_addr && 6085 hci_dev_test_flag(hdev, HCI_PRIVACY)) { 6086 direct_addr_type = ev_bdaddr_type(hdev, direct_addr_type, 6087 &bdaddr_resolved); 6088 6089 /* Only resolvable random addresses are valid for these 6090 * kind of reports and others can be ignored. 6091 */ 6092 if (!hci_bdaddr_is_rpa(direct_addr, direct_addr_type)) 6093 return; 6094 6095 /* If the local IRK of the controller does not match 6096 * with the resolvable random address provided, then 6097 * this report can be ignored. 6098 */ 6099 if (!smp_irk_matches(hdev, hdev->irk, direct_addr)) 6100 return; 6101 } 6102 6103 /* Check if we need to convert to identity address */ 6104 irk = hci_get_irk(hdev, bdaddr, bdaddr_type); 6105 if (irk) { 6106 bdaddr = &irk->bdaddr; 6107 bdaddr_type = irk->addr_type; 6108 } 6109 6110 bdaddr_type = ev_bdaddr_type(hdev, bdaddr_type, &bdaddr_resolved); 6111 6112 /* Check if we have been requested to connect to this device. 6113 * 6114 * direct_addr is set only for directed advertising reports (it is NULL 6115 * for advertising reports) and is already verified to be RPA above. 6116 */ 6117 conn = check_pending_le_conn(hdev, bdaddr, bdaddr_type, bdaddr_resolved, 6118 type, phy, sec_phy); 6119 if (!ext_adv && conn && type == LE_ADV_IND && 6120 len <= max_adv_len(hdev)) { 6121 /* Store report for later inclusion by 6122 * mgmt_device_connected 6123 */ 6124 memcpy(conn->le_adv_data, data, len); 6125 conn->le_adv_data_len = len; 6126 } 6127 6128 if (type == LE_ADV_NONCONN_IND || type == LE_ADV_SCAN_IND) 6129 flags = MGMT_DEV_FOUND_NOT_CONNECTABLE; 6130 else 6131 flags = 0; 6132 6133 /* All scan results should be sent up for Mesh systems */ 6134 if (hci_dev_test_flag(hdev, HCI_MESH)) { 6135 mgmt_device_found(hdev, bdaddr, LE_LINK, bdaddr_type, NULL, 6136 rssi, flags, data, len, NULL, 0, instant); 6137 return; 6138 } 6139 6140 /* Passive scanning shouldn't trigger any device found events, 6141 * except for devices marked as CONN_REPORT for which we do send 6142 * device found events, or advertisement monitoring requested. 6143 */ 6144 if (hdev->le_scan_type == LE_SCAN_PASSIVE) { 6145 if (type == LE_ADV_DIRECT_IND) 6146 return; 6147 6148 if (!hci_pend_le_action_lookup(&hdev->pend_le_reports, 6149 bdaddr, bdaddr_type) && 6150 idr_is_empty(&hdev->adv_monitors_idr)) 6151 return; 6152 6153 mgmt_device_found(hdev, bdaddr, LE_LINK, bdaddr_type, NULL, 6154 rssi, flags, data, len, NULL, 0, 0); 6155 return; 6156 } 6157 6158 /* When receiving a scan response, then there is no way to 6159 * know if the remote device is connectable or not. However 6160 * since scan responses are merged with a previously seen 6161 * advertising report, the flags field from that report 6162 * will be used. 6163 * 6164 * In the unlikely case that a controller just sends a scan 6165 * response event that doesn't match the pending report, then 6166 * it is marked as a standalone SCAN_RSP. 6167 */ 6168 if (type == LE_ADV_SCAN_RSP) 6169 flags = MGMT_DEV_FOUND_SCAN_RSP; 6170 6171 /* If there's nothing pending either store the data from this 6172 * event or send an immediate device found event if the data 6173 * should not be stored for later. 6174 */ 6175 if (!has_pending_adv_report(hdev)) { 6176 /* If the report will trigger a SCAN_REQ store it for 6177 * later merging. 6178 */ 6179 if (!ext_adv && (type == LE_ADV_IND || 6180 type == LE_ADV_SCAN_IND)) { 6181 store_pending_adv_report(hdev, bdaddr, bdaddr_type, 6182 rssi, flags, data, len); 6183 return; 6184 } 6185 6186 mgmt_device_found(hdev, bdaddr, LE_LINK, bdaddr_type, NULL, 6187 rssi, flags, data, len, NULL, 0, 0); 6188 return; 6189 } 6190 6191 /* Check if the pending report is for the same device as the new one */ 6192 match = (!bacmp(bdaddr, &d->last_adv_addr) && 6193 bdaddr_type == d->last_adv_addr_type); 6194 6195 /* If the pending data doesn't match this report or this isn't a 6196 * scan response (e.g. we got a duplicate ADV_IND) then force 6197 * sending of the pending data. 6198 */ 6199 if (type != LE_ADV_SCAN_RSP || !match) { 6200 /* Send out whatever is in the cache, but skip duplicates */ 6201 if (!match) 6202 mgmt_device_found(hdev, &d->last_adv_addr, LE_LINK, 6203 d->last_adv_addr_type, NULL, 6204 d->last_adv_rssi, d->last_adv_flags, 6205 d->last_adv_data, 6206 d->last_adv_data_len, NULL, 0, 0); 6207 6208 /* If the new report will trigger a SCAN_REQ store it for 6209 * later merging. 6210 */ 6211 if (!ext_adv && (type == LE_ADV_IND || 6212 type == LE_ADV_SCAN_IND)) { 6213 store_pending_adv_report(hdev, bdaddr, bdaddr_type, 6214 rssi, flags, data, len); 6215 return; 6216 } 6217 6218 /* The advertising reports cannot be merged, so clear 6219 * the pending report and send out a device found event. 6220 */ 6221 clear_pending_adv_report(hdev); 6222 mgmt_device_found(hdev, bdaddr, LE_LINK, bdaddr_type, NULL, 6223 rssi, flags, data, len, NULL, 0, 0); 6224 return; 6225 } 6226 6227 /* If we get here we've got a pending ADV_IND or ADV_SCAN_IND and 6228 * the new event is a SCAN_RSP. We can therefore proceed with 6229 * sending a merged device found event. 6230 */ 6231 mgmt_device_found(hdev, &d->last_adv_addr, LE_LINK, 6232 d->last_adv_addr_type, NULL, rssi, d->last_adv_flags, 6233 d->last_adv_data, d->last_adv_data_len, data, len, 0); 6234 clear_pending_adv_report(hdev); 6235 } 6236 6237 static void hci_le_adv_report_evt(struct hci_dev *hdev, void *data, 6238 struct sk_buff *skb) 6239 { 6240 struct hci_ev_le_advertising_report *ev = data; 6241 u64 instant = jiffies; 6242 6243 if (!ev->num) 6244 return; 6245 6246 hci_dev_lock(hdev); 6247 6248 while (ev->num--) { 6249 struct hci_ev_le_advertising_info *info; 6250 s8 rssi; 6251 6252 info = hci_le_ev_skb_pull(hdev, skb, 6253 HCI_EV_LE_ADVERTISING_REPORT, 6254 sizeof(*info)); 6255 if (!info) 6256 break; 6257 6258 if (!hci_le_ev_skb_pull(hdev, skb, HCI_EV_LE_ADVERTISING_REPORT, 6259 info->length + 1)) 6260 break; 6261 6262 if (info->length <= max_adv_len(hdev)) { 6263 rssi = info->data[info->length]; 6264 process_adv_report(hdev, info->type, &info->bdaddr, 6265 info->bdaddr_type, NULL, 0, 6266 HCI_ADV_PHY_1M, 0, rssi, 6267 info->data, info->length, false, 6268 false, instant); 6269 } else { 6270 bt_dev_err(hdev, "Dropping invalid advertising data"); 6271 } 6272 } 6273 6274 hci_dev_unlock(hdev); 6275 } 6276 6277 static u8 ext_evt_type_to_legacy(struct hci_dev *hdev, u16 evt_type) 6278 { 6279 if (evt_type & LE_EXT_ADV_LEGACY_PDU) { 6280 switch (evt_type) { 6281 case LE_LEGACY_ADV_IND: 6282 return LE_ADV_IND; 6283 case LE_LEGACY_ADV_DIRECT_IND: 6284 return LE_ADV_DIRECT_IND; 6285 case LE_LEGACY_ADV_SCAN_IND: 6286 return LE_ADV_SCAN_IND; 6287 case LE_LEGACY_NONCONN_IND: 6288 return LE_ADV_NONCONN_IND; 6289 case LE_LEGACY_SCAN_RSP_ADV: 6290 case LE_LEGACY_SCAN_RSP_ADV_SCAN: 6291 return LE_ADV_SCAN_RSP; 6292 } 6293 6294 goto invalid; 6295 } 6296 6297 if (evt_type & LE_EXT_ADV_CONN_IND) { 6298 if (evt_type & LE_EXT_ADV_DIRECT_IND) 6299 return LE_ADV_DIRECT_IND; 6300 6301 return LE_ADV_IND; 6302 } 6303 6304 if (evt_type & LE_EXT_ADV_SCAN_RSP) 6305 return LE_ADV_SCAN_RSP; 6306 6307 if (evt_type & LE_EXT_ADV_SCAN_IND) 6308 return LE_ADV_SCAN_IND; 6309 6310 if (evt_type == LE_EXT_ADV_NON_CONN_IND || 6311 evt_type & LE_EXT_ADV_DIRECT_IND) 6312 return LE_ADV_NONCONN_IND; 6313 6314 invalid: 6315 bt_dev_err_ratelimited(hdev, "Unknown advertising packet type: 0x%02x", 6316 evt_type); 6317 6318 return LE_ADV_INVALID; 6319 } 6320 6321 static void hci_le_ext_adv_report_evt(struct hci_dev *hdev, void *data, 6322 struct sk_buff *skb) 6323 { 6324 struct hci_ev_le_ext_adv_report *ev = data; 6325 u64 instant = jiffies; 6326 6327 if (!ev->num) 6328 return; 6329 6330 hci_dev_lock(hdev); 6331 6332 while (ev->num--) { 6333 struct hci_ev_le_ext_adv_info *info; 6334 u8 legacy_evt_type; 6335 u16 evt_type; 6336 6337 info = hci_le_ev_skb_pull(hdev, skb, HCI_EV_LE_EXT_ADV_REPORT, 6338 sizeof(*info)); 6339 if (!info) 6340 break; 6341 6342 if (!hci_le_ev_skb_pull(hdev, skb, HCI_EV_LE_EXT_ADV_REPORT, 6343 info->length)) 6344 break; 6345 6346 evt_type = __le16_to_cpu(info->type) & LE_EXT_ADV_EVT_TYPE_MASK; 6347 legacy_evt_type = ext_evt_type_to_legacy(hdev, evt_type); 6348 6349 if (test_bit(HCI_QUIRK_FIXUP_LE_EXT_ADV_REPORT_PHY, 6350 &hdev->quirks)) { 6351 info->primary_phy &= 0x1f; 6352 info->secondary_phy &= 0x1f; 6353 } 6354 6355 /* Check if PA Sync is pending and if the hci_conn SID has not 6356 * been set update it. 6357 */ 6358 if (hci_dev_test_flag(hdev, HCI_PA_SYNC)) { 6359 struct hci_conn *conn; 6360 6361 conn = hci_conn_hash_lookup_create_pa_sync(hdev); 6362 if (conn && conn->sid == HCI_SID_INVALID) 6363 conn->sid = info->sid; 6364 } 6365 6366 if (legacy_evt_type != LE_ADV_INVALID) { 6367 process_adv_report(hdev, legacy_evt_type, &info->bdaddr, 6368 info->bdaddr_type, NULL, 0, 6369 info->primary_phy, 6370 info->secondary_phy, 6371 info->rssi, info->data, info->length, 6372 !(evt_type & LE_EXT_ADV_LEGACY_PDU), 6373 false, instant); 6374 } 6375 } 6376 6377 hci_dev_unlock(hdev); 6378 } 6379 6380 static int hci_le_pa_term_sync(struct hci_dev *hdev, __le16 handle) 6381 { 6382 struct hci_cp_le_pa_term_sync cp; 6383 6384 memset(&cp, 0, sizeof(cp)); 6385 cp.handle = handle; 6386 6387 return hci_send_cmd(hdev, HCI_OP_LE_PA_TERM_SYNC, sizeof(cp), &cp); 6388 } 6389 6390 static void hci_le_pa_sync_estabilished_evt(struct hci_dev *hdev, void *data, 6391 struct sk_buff *skb) 6392 { 6393 struct hci_ev_le_pa_sync_established *ev = data; 6394 int mask = hdev->link_mode; 6395 __u8 flags = 0; 6396 struct hci_conn *pa_sync, *conn; 6397 6398 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 6399 6400 hci_dev_lock(hdev); 6401 6402 hci_dev_clear_flag(hdev, HCI_PA_SYNC); 6403 6404 conn = hci_conn_hash_lookup_create_pa_sync(hdev); 6405 if (!conn) { 6406 bt_dev_err(hdev, 6407 "Unable to find connection for dst %pMR sid 0x%2.2x", 6408 &ev->bdaddr, ev->sid); 6409 goto unlock; 6410 } 6411 6412 clear_bit(HCI_CONN_CREATE_PA_SYNC, &conn->flags); 6413 6414 conn->sync_handle = le16_to_cpu(ev->handle); 6415 conn->sid = HCI_SID_INVALID; 6416 6417 mask |= hci_proto_connect_ind(hdev, &ev->bdaddr, BIS_LINK, 6418 &flags); 6419 if (!(mask & HCI_LM_ACCEPT)) { 6420 hci_le_pa_term_sync(hdev, ev->handle); 6421 goto unlock; 6422 } 6423 6424 if (!(flags & HCI_PROTO_DEFER)) 6425 goto unlock; 6426 6427 /* Add connection to indicate PA sync event */ 6428 pa_sync = hci_conn_add_unset(hdev, BIS_LINK, BDADDR_ANY, 6429 HCI_ROLE_SLAVE); 6430 6431 if (IS_ERR(pa_sync)) 6432 goto unlock; 6433 6434 pa_sync->sync_handle = le16_to_cpu(ev->handle); 6435 6436 if (ev->status) { 6437 set_bit(HCI_CONN_PA_SYNC_FAILED, &pa_sync->flags); 6438 6439 /* Notify iso layer */ 6440 hci_connect_cfm(pa_sync, ev->status); 6441 } 6442 6443 unlock: 6444 hci_dev_unlock(hdev); 6445 } 6446 6447 static void hci_le_per_adv_report_evt(struct hci_dev *hdev, void *data, 6448 struct sk_buff *skb) 6449 { 6450 struct hci_ev_le_per_adv_report *ev = data; 6451 int mask = hdev->link_mode; 6452 __u8 flags = 0; 6453 struct hci_conn *pa_sync; 6454 6455 bt_dev_dbg(hdev, "sync_handle 0x%4.4x", le16_to_cpu(ev->sync_handle)); 6456 6457 hci_dev_lock(hdev); 6458 6459 mask |= hci_proto_connect_ind(hdev, BDADDR_ANY, BIS_LINK, &flags); 6460 if (!(mask & HCI_LM_ACCEPT)) 6461 goto unlock; 6462 6463 if (!(flags & HCI_PROTO_DEFER)) 6464 goto unlock; 6465 6466 pa_sync = hci_conn_hash_lookup_pa_sync_handle 6467 (hdev, 6468 le16_to_cpu(ev->sync_handle)); 6469 6470 if (!pa_sync) 6471 goto unlock; 6472 6473 if (ev->data_status == LE_PA_DATA_COMPLETE && 6474 !test_and_set_bit(HCI_CONN_PA_SYNC, &pa_sync->flags)) { 6475 /* Notify iso layer */ 6476 hci_connect_cfm(pa_sync, 0); 6477 6478 /* Notify MGMT layer */ 6479 mgmt_device_connected(hdev, pa_sync, NULL, 0); 6480 } 6481 6482 unlock: 6483 hci_dev_unlock(hdev); 6484 } 6485 6486 static void hci_le_remote_feat_complete_evt(struct hci_dev *hdev, void *data, 6487 struct sk_buff *skb) 6488 { 6489 struct hci_ev_le_remote_feat_complete *ev = data; 6490 struct hci_conn *conn; 6491 6492 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 6493 6494 hci_dev_lock(hdev); 6495 6496 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle)); 6497 if (conn) { 6498 if (!ev->status) 6499 memcpy(conn->features[0], ev->features, 8); 6500 6501 if (conn->state == BT_CONFIG) { 6502 __u8 status; 6503 6504 /* If the local controller supports peripheral-initiated 6505 * features exchange, but the remote controller does 6506 * not, then it is possible that the error code 0x1a 6507 * for unsupported remote feature gets returned. 6508 * 6509 * In this specific case, allow the connection to 6510 * transition into connected state and mark it as 6511 * successful. 6512 */ 6513 if (!conn->out && ev->status == HCI_ERROR_UNSUPPORTED_REMOTE_FEATURE && 6514 (hdev->le_features[0] & HCI_LE_PERIPHERAL_FEATURES)) 6515 status = 0x00; 6516 else 6517 status = ev->status; 6518 6519 conn->state = BT_CONNECTED; 6520 hci_connect_cfm(conn, status); 6521 hci_conn_drop(conn); 6522 } 6523 } 6524 6525 hci_dev_unlock(hdev); 6526 } 6527 6528 static void hci_le_ltk_request_evt(struct hci_dev *hdev, void *data, 6529 struct sk_buff *skb) 6530 { 6531 struct hci_ev_le_ltk_req *ev = data; 6532 struct hci_cp_le_ltk_reply cp; 6533 struct hci_cp_le_ltk_neg_reply neg; 6534 struct hci_conn *conn; 6535 struct smp_ltk *ltk; 6536 6537 bt_dev_dbg(hdev, "handle 0x%4.4x", __le16_to_cpu(ev->handle)); 6538 6539 hci_dev_lock(hdev); 6540 6541 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle)); 6542 if (conn == NULL) 6543 goto not_found; 6544 6545 ltk = hci_find_ltk(hdev, &conn->dst, conn->dst_type, conn->role); 6546 if (!ltk) 6547 goto not_found; 6548 6549 if (smp_ltk_is_sc(ltk)) { 6550 /* With SC both EDiv and Rand are set to zero */ 6551 if (ev->ediv || ev->rand) 6552 goto not_found; 6553 } else { 6554 /* For non-SC keys check that EDiv and Rand match */ 6555 if (ev->ediv != ltk->ediv || ev->rand != ltk->rand) 6556 goto not_found; 6557 } 6558 6559 memcpy(cp.ltk, ltk->val, ltk->enc_size); 6560 memset(cp.ltk + ltk->enc_size, 0, sizeof(cp.ltk) - ltk->enc_size); 6561 cp.handle = cpu_to_le16(conn->handle); 6562 6563 conn->pending_sec_level = smp_ltk_sec_level(ltk); 6564 6565 conn->enc_key_size = ltk->enc_size; 6566 6567 hci_send_cmd(hdev, HCI_OP_LE_LTK_REPLY, sizeof(cp), &cp); 6568 6569 /* Ref. Bluetooth Core SPEC pages 1975 and 2004. STK is a 6570 * temporary key used to encrypt a connection following 6571 * pairing. It is used during the Encrypted Session Setup to 6572 * distribute the keys. Later, security can be re-established 6573 * using a distributed LTK. 6574 */ 6575 if (ltk->type == SMP_STK) { 6576 set_bit(HCI_CONN_STK_ENCRYPT, &conn->flags); 6577 list_del_rcu(<k->list); 6578 kfree_rcu(ltk, rcu); 6579 } else { 6580 clear_bit(HCI_CONN_STK_ENCRYPT, &conn->flags); 6581 } 6582 6583 hci_dev_unlock(hdev); 6584 6585 return; 6586 6587 not_found: 6588 neg.handle = ev->handle; 6589 hci_send_cmd(hdev, HCI_OP_LE_LTK_NEG_REPLY, sizeof(neg), &neg); 6590 hci_dev_unlock(hdev); 6591 } 6592 6593 static void send_conn_param_neg_reply(struct hci_dev *hdev, u16 handle, 6594 u8 reason) 6595 { 6596 struct hci_cp_le_conn_param_req_neg_reply cp; 6597 6598 cp.handle = cpu_to_le16(handle); 6599 cp.reason = reason; 6600 6601 hci_send_cmd(hdev, HCI_OP_LE_CONN_PARAM_REQ_NEG_REPLY, sizeof(cp), 6602 &cp); 6603 } 6604 6605 static void hci_le_remote_conn_param_req_evt(struct hci_dev *hdev, void *data, 6606 struct sk_buff *skb) 6607 { 6608 struct hci_ev_le_remote_conn_param_req *ev = data; 6609 struct hci_cp_le_conn_param_req_reply cp; 6610 struct hci_conn *hcon; 6611 u16 handle, min, max, latency, timeout; 6612 6613 bt_dev_dbg(hdev, "handle 0x%4.4x", __le16_to_cpu(ev->handle)); 6614 6615 handle = le16_to_cpu(ev->handle); 6616 min = le16_to_cpu(ev->interval_min); 6617 max = le16_to_cpu(ev->interval_max); 6618 latency = le16_to_cpu(ev->latency); 6619 timeout = le16_to_cpu(ev->timeout); 6620 6621 hcon = hci_conn_hash_lookup_handle(hdev, handle); 6622 if (!hcon || hcon->state != BT_CONNECTED) 6623 return send_conn_param_neg_reply(hdev, handle, 6624 HCI_ERROR_UNKNOWN_CONN_ID); 6625 6626 if (max > hcon->le_conn_max_interval) 6627 return send_conn_param_neg_reply(hdev, handle, 6628 HCI_ERROR_INVALID_LL_PARAMS); 6629 6630 if (hci_check_conn_params(min, max, latency, timeout)) 6631 return send_conn_param_neg_reply(hdev, handle, 6632 HCI_ERROR_INVALID_LL_PARAMS); 6633 6634 if (hcon->role == HCI_ROLE_MASTER) { 6635 struct hci_conn_params *params; 6636 u8 store_hint; 6637 6638 hci_dev_lock(hdev); 6639 6640 params = hci_conn_params_lookup(hdev, &hcon->dst, 6641 hcon->dst_type); 6642 if (params) { 6643 params->conn_min_interval = min; 6644 params->conn_max_interval = max; 6645 params->conn_latency = latency; 6646 params->supervision_timeout = timeout; 6647 store_hint = 0x01; 6648 } else { 6649 store_hint = 0x00; 6650 } 6651 6652 hci_dev_unlock(hdev); 6653 6654 mgmt_new_conn_param(hdev, &hcon->dst, hcon->dst_type, 6655 store_hint, min, max, latency, timeout); 6656 } 6657 6658 cp.handle = ev->handle; 6659 cp.interval_min = ev->interval_min; 6660 cp.interval_max = ev->interval_max; 6661 cp.latency = ev->latency; 6662 cp.timeout = ev->timeout; 6663 cp.min_ce_len = 0; 6664 cp.max_ce_len = 0; 6665 6666 hci_send_cmd(hdev, HCI_OP_LE_CONN_PARAM_REQ_REPLY, sizeof(cp), &cp); 6667 } 6668 6669 static void hci_le_direct_adv_report_evt(struct hci_dev *hdev, void *data, 6670 struct sk_buff *skb) 6671 { 6672 struct hci_ev_le_direct_adv_report *ev = data; 6673 u64 instant = jiffies; 6674 int i; 6675 6676 if (!hci_le_ev_skb_pull(hdev, skb, HCI_EV_LE_DIRECT_ADV_REPORT, 6677 flex_array_size(ev, info, ev->num))) 6678 return; 6679 6680 if (!ev->num) 6681 return; 6682 6683 hci_dev_lock(hdev); 6684 6685 for (i = 0; i < ev->num; i++) { 6686 struct hci_ev_le_direct_adv_info *info = &ev->info[i]; 6687 6688 process_adv_report(hdev, info->type, &info->bdaddr, 6689 info->bdaddr_type, &info->direct_addr, 6690 info->direct_addr_type, HCI_ADV_PHY_1M, 0, 6691 info->rssi, NULL, 0, false, false, instant); 6692 } 6693 6694 hci_dev_unlock(hdev); 6695 } 6696 6697 static void hci_le_phy_update_evt(struct hci_dev *hdev, void *data, 6698 struct sk_buff *skb) 6699 { 6700 struct hci_ev_le_phy_update_complete *ev = data; 6701 struct hci_conn *conn; 6702 6703 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 6704 6705 if (ev->status) 6706 return; 6707 6708 hci_dev_lock(hdev); 6709 6710 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle)); 6711 if (!conn) 6712 goto unlock; 6713 6714 conn->le_tx_phy = ev->tx_phy; 6715 conn->le_rx_phy = ev->rx_phy; 6716 6717 unlock: 6718 hci_dev_unlock(hdev); 6719 } 6720 6721 static void hci_le_cis_estabilished_evt(struct hci_dev *hdev, void *data, 6722 struct sk_buff *skb) 6723 { 6724 struct hci_evt_le_cis_established *ev = data; 6725 struct hci_conn *conn; 6726 struct bt_iso_qos *qos; 6727 bool pending = false; 6728 u16 handle = __le16_to_cpu(ev->handle); 6729 u32 c_sdu_interval, p_sdu_interval; 6730 6731 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 6732 6733 hci_dev_lock(hdev); 6734 6735 conn = hci_conn_hash_lookup_handle(hdev, handle); 6736 if (!conn) { 6737 bt_dev_err(hdev, 6738 "Unable to find connection with handle 0x%4.4x", 6739 handle); 6740 goto unlock; 6741 } 6742 6743 if (conn->type != CIS_LINK) { 6744 bt_dev_err(hdev, 6745 "Invalid connection link type handle 0x%4.4x", 6746 handle); 6747 goto unlock; 6748 } 6749 6750 qos = &conn->iso_qos; 6751 6752 pending = test_and_clear_bit(HCI_CONN_CREATE_CIS, &conn->flags); 6753 6754 /* BLUETOOTH CORE SPECIFICATION Version 5.4 | Vol 6, Part G 6755 * page 3075: 6756 * Transport_Latency_C_To_P = CIG_Sync_Delay + (FT_C_To_P) × 6757 * ISO_Interval + SDU_Interval_C_To_P 6758 * ... 6759 * SDU_Interval = (CIG_Sync_Delay + (FT) x ISO_Interval) - 6760 * Transport_Latency 6761 */ 6762 c_sdu_interval = (get_unaligned_le24(ev->cig_sync_delay) + 6763 (ev->c_ft * le16_to_cpu(ev->interval) * 1250)) - 6764 get_unaligned_le24(ev->c_latency); 6765 p_sdu_interval = (get_unaligned_le24(ev->cig_sync_delay) + 6766 (ev->p_ft * le16_to_cpu(ev->interval) * 1250)) - 6767 get_unaligned_le24(ev->p_latency); 6768 6769 switch (conn->role) { 6770 case HCI_ROLE_SLAVE: 6771 qos->ucast.in.interval = c_sdu_interval; 6772 qos->ucast.out.interval = p_sdu_interval; 6773 /* Convert Transport Latency (us) to Latency (msec) */ 6774 qos->ucast.in.latency = 6775 DIV_ROUND_CLOSEST(get_unaligned_le24(ev->c_latency), 6776 1000); 6777 qos->ucast.out.latency = 6778 DIV_ROUND_CLOSEST(get_unaligned_le24(ev->p_latency), 6779 1000); 6780 qos->ucast.in.sdu = le16_to_cpu(ev->c_mtu); 6781 qos->ucast.out.sdu = le16_to_cpu(ev->p_mtu); 6782 qos->ucast.in.phy = ev->c_phy; 6783 qos->ucast.out.phy = ev->p_phy; 6784 break; 6785 case HCI_ROLE_MASTER: 6786 qos->ucast.in.interval = p_sdu_interval; 6787 qos->ucast.out.interval = c_sdu_interval; 6788 /* Convert Transport Latency (us) to Latency (msec) */ 6789 qos->ucast.out.latency = 6790 DIV_ROUND_CLOSEST(get_unaligned_le24(ev->c_latency), 6791 1000); 6792 qos->ucast.in.latency = 6793 DIV_ROUND_CLOSEST(get_unaligned_le24(ev->p_latency), 6794 1000); 6795 qos->ucast.out.sdu = le16_to_cpu(ev->c_mtu); 6796 qos->ucast.in.sdu = le16_to_cpu(ev->p_mtu); 6797 qos->ucast.out.phy = ev->c_phy; 6798 qos->ucast.in.phy = ev->p_phy; 6799 break; 6800 } 6801 6802 if (!ev->status) { 6803 conn->state = BT_CONNECTED; 6804 hci_debugfs_create_conn(conn); 6805 hci_conn_add_sysfs(conn); 6806 hci_iso_setup_path(conn); 6807 goto unlock; 6808 } 6809 6810 conn->state = BT_CLOSED; 6811 hci_connect_cfm(conn, ev->status); 6812 hci_conn_del(conn); 6813 6814 unlock: 6815 if (pending) 6816 hci_le_create_cis_pending(hdev); 6817 6818 hci_dev_unlock(hdev); 6819 } 6820 6821 static void hci_le_reject_cis(struct hci_dev *hdev, __le16 handle) 6822 { 6823 struct hci_cp_le_reject_cis cp; 6824 6825 memset(&cp, 0, sizeof(cp)); 6826 cp.handle = handle; 6827 cp.reason = HCI_ERROR_REJ_BAD_ADDR; 6828 hci_send_cmd(hdev, HCI_OP_LE_REJECT_CIS, sizeof(cp), &cp); 6829 } 6830 6831 static void hci_le_accept_cis(struct hci_dev *hdev, __le16 handle) 6832 { 6833 struct hci_cp_le_accept_cis cp; 6834 6835 memset(&cp, 0, sizeof(cp)); 6836 cp.handle = handle; 6837 hci_send_cmd(hdev, HCI_OP_LE_ACCEPT_CIS, sizeof(cp), &cp); 6838 } 6839 6840 static void hci_le_cis_req_evt(struct hci_dev *hdev, void *data, 6841 struct sk_buff *skb) 6842 { 6843 struct hci_evt_le_cis_req *ev = data; 6844 u16 acl_handle, cis_handle; 6845 struct hci_conn *acl, *cis; 6846 int mask; 6847 __u8 flags = 0; 6848 6849 acl_handle = __le16_to_cpu(ev->acl_handle); 6850 cis_handle = __le16_to_cpu(ev->cis_handle); 6851 6852 bt_dev_dbg(hdev, "acl 0x%4.4x handle 0x%4.4x cig 0x%2.2x cis 0x%2.2x", 6853 acl_handle, cis_handle, ev->cig_id, ev->cis_id); 6854 6855 hci_dev_lock(hdev); 6856 6857 acl = hci_conn_hash_lookup_handle(hdev, acl_handle); 6858 if (!acl) 6859 goto unlock; 6860 6861 mask = hci_proto_connect_ind(hdev, &acl->dst, CIS_LINK, &flags); 6862 if (!(mask & HCI_LM_ACCEPT)) { 6863 hci_le_reject_cis(hdev, ev->cis_handle); 6864 goto unlock; 6865 } 6866 6867 cis = hci_conn_hash_lookup_handle(hdev, cis_handle); 6868 if (!cis) { 6869 cis = hci_conn_add(hdev, CIS_LINK, &acl->dst, 6870 HCI_ROLE_SLAVE, cis_handle); 6871 if (IS_ERR(cis)) { 6872 hci_le_reject_cis(hdev, ev->cis_handle); 6873 goto unlock; 6874 } 6875 } 6876 6877 cis->iso_qos.ucast.cig = ev->cig_id; 6878 cis->iso_qos.ucast.cis = ev->cis_id; 6879 6880 if (!(flags & HCI_PROTO_DEFER)) { 6881 hci_le_accept_cis(hdev, ev->cis_handle); 6882 } else { 6883 cis->state = BT_CONNECT2; 6884 hci_connect_cfm(cis, 0); 6885 } 6886 6887 unlock: 6888 hci_dev_unlock(hdev); 6889 } 6890 6891 static int hci_iso_term_big_sync(struct hci_dev *hdev, void *data) 6892 { 6893 u8 handle = PTR_UINT(data); 6894 6895 return hci_le_terminate_big_sync(hdev, handle, 6896 HCI_ERROR_LOCAL_HOST_TERM); 6897 } 6898 6899 static void hci_le_create_big_complete_evt(struct hci_dev *hdev, void *data, 6900 struct sk_buff *skb) 6901 { 6902 struct hci_evt_le_create_big_complete *ev = data; 6903 struct hci_conn *conn; 6904 __u8 i = 0; 6905 6906 BT_DBG("%s status 0x%2.2x", hdev->name, ev->status); 6907 6908 if (!hci_le_ev_skb_pull(hdev, skb, HCI_EVT_LE_CREATE_BIG_COMPLETE, 6909 flex_array_size(ev, bis_handle, ev->num_bis))) 6910 return; 6911 6912 hci_dev_lock(hdev); 6913 6914 /* Connect all BISes that are bound to the BIG */ 6915 while ((conn = hci_conn_hash_lookup_big_state(hdev, ev->handle, 6916 BT_BOUND))) { 6917 if (ev->status) { 6918 hci_connect_cfm(conn, ev->status); 6919 hci_conn_del(conn); 6920 continue; 6921 } 6922 6923 if (hci_conn_set_handle(conn, 6924 __le16_to_cpu(ev->bis_handle[i++]))) 6925 continue; 6926 6927 conn->state = BT_CONNECTED; 6928 set_bit(HCI_CONN_BIG_CREATED, &conn->flags); 6929 hci_debugfs_create_conn(conn); 6930 hci_conn_add_sysfs(conn); 6931 hci_iso_setup_path(conn); 6932 } 6933 6934 if (!ev->status && !i) 6935 /* If no BISes have been connected for the BIG, 6936 * terminate. This is in case all bound connections 6937 * have been closed before the BIG creation 6938 * has completed. 6939 */ 6940 hci_cmd_sync_queue(hdev, hci_iso_term_big_sync, 6941 UINT_PTR(ev->handle), NULL); 6942 6943 hci_dev_unlock(hdev); 6944 } 6945 6946 static void hci_le_big_sync_established_evt(struct hci_dev *hdev, void *data, 6947 struct sk_buff *skb) 6948 { 6949 struct hci_evt_le_big_sync_estabilished *ev = data; 6950 struct hci_conn *bis, *conn; 6951 int i; 6952 6953 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 6954 6955 if (!hci_le_ev_skb_pull(hdev, skb, HCI_EVT_LE_BIG_SYNC_ESTABLISHED, 6956 flex_array_size(ev, bis, ev->num_bis))) 6957 return; 6958 6959 hci_dev_lock(hdev); 6960 6961 conn = hci_conn_hash_lookup_big_sync_pend(hdev, ev->handle, 6962 ev->num_bis); 6963 if (!conn) { 6964 bt_dev_err(hdev, 6965 "Unable to find connection for big 0x%2.2x", 6966 ev->handle); 6967 goto unlock; 6968 } 6969 6970 clear_bit(HCI_CONN_CREATE_BIG_SYNC, &conn->flags); 6971 6972 conn->num_bis = 0; 6973 memset(conn->bis, 0, sizeof(conn->num_bis)); 6974 6975 for (i = 0; i < ev->num_bis; i++) { 6976 u16 handle = le16_to_cpu(ev->bis[i]); 6977 __le32 interval; 6978 6979 bis = hci_conn_hash_lookup_handle(hdev, handle); 6980 if (!bis) { 6981 if (handle > HCI_CONN_HANDLE_MAX) { 6982 bt_dev_dbg(hdev, "ignore too large handle %u", handle); 6983 continue; 6984 } 6985 bis = hci_conn_add(hdev, BIS_LINK, BDADDR_ANY, 6986 HCI_ROLE_SLAVE, handle); 6987 if (IS_ERR(bis)) 6988 continue; 6989 } 6990 6991 if (ev->status != 0x42) 6992 /* Mark PA sync as established */ 6993 set_bit(HCI_CONN_PA_SYNC, &bis->flags); 6994 6995 bis->sync_handle = conn->sync_handle; 6996 bis->iso_qos.bcast.big = ev->handle; 6997 memset(&interval, 0, sizeof(interval)); 6998 memcpy(&interval, ev->latency, sizeof(ev->latency)); 6999 bis->iso_qos.bcast.in.interval = le32_to_cpu(interval); 7000 /* Convert ISO Interval (1.25 ms slots) to latency (ms) */ 7001 bis->iso_qos.bcast.in.latency = le16_to_cpu(ev->interval) * 125 / 100; 7002 bis->iso_qos.bcast.in.sdu = le16_to_cpu(ev->max_pdu); 7003 7004 if (!ev->status) { 7005 set_bit(HCI_CONN_BIG_SYNC, &bis->flags); 7006 hci_iso_setup_path(bis); 7007 } 7008 } 7009 7010 /* In case BIG sync failed, notify each failed connection to 7011 * the user after all hci connections have been added 7012 */ 7013 if (ev->status) 7014 for (i = 0; i < ev->num_bis; i++) { 7015 u16 handle = le16_to_cpu(ev->bis[i]); 7016 7017 bis = hci_conn_hash_lookup_handle(hdev, handle); 7018 if (!bis) 7019 continue; 7020 7021 set_bit(HCI_CONN_BIG_SYNC_FAILED, &bis->flags); 7022 hci_connect_cfm(bis, ev->status); 7023 } 7024 7025 unlock: 7026 hci_dev_unlock(hdev); 7027 } 7028 7029 static void hci_le_big_info_adv_report_evt(struct hci_dev *hdev, void *data, 7030 struct sk_buff *skb) 7031 { 7032 struct hci_evt_le_big_info_adv_report *ev = data; 7033 int mask = hdev->link_mode; 7034 __u8 flags = 0; 7035 struct hci_conn *pa_sync; 7036 7037 bt_dev_dbg(hdev, "sync_handle 0x%4.4x", le16_to_cpu(ev->sync_handle)); 7038 7039 hci_dev_lock(hdev); 7040 7041 mask |= hci_proto_connect_ind(hdev, BDADDR_ANY, BIS_LINK, &flags); 7042 if (!(mask & HCI_LM_ACCEPT)) 7043 goto unlock; 7044 7045 if (!(flags & HCI_PROTO_DEFER)) 7046 goto unlock; 7047 7048 pa_sync = hci_conn_hash_lookup_pa_sync_handle 7049 (hdev, 7050 le16_to_cpu(ev->sync_handle)); 7051 7052 if (!pa_sync) 7053 goto unlock; 7054 7055 pa_sync->iso_qos.bcast.encryption = ev->encryption; 7056 7057 /* Notify iso layer */ 7058 hci_connect_cfm(pa_sync, 0); 7059 7060 unlock: 7061 hci_dev_unlock(hdev); 7062 } 7063 7064 #define HCI_LE_EV_VL(_op, _func, _min_len, _max_len) \ 7065 [_op] = { \ 7066 .func = _func, \ 7067 .min_len = _min_len, \ 7068 .max_len = _max_len, \ 7069 } 7070 7071 #define HCI_LE_EV(_op, _func, _len) \ 7072 HCI_LE_EV_VL(_op, _func, _len, _len) 7073 7074 #define HCI_LE_EV_STATUS(_op, _func) \ 7075 HCI_LE_EV(_op, _func, sizeof(struct hci_ev_status)) 7076 7077 /* Entries in this table shall have their position according to the subevent 7078 * opcode they handle so the use of the macros above is recommend since it does 7079 * attempt to initialize at its proper index using Designated Initializers that 7080 * way events without a callback function can be ommited. 7081 */ 7082 static const struct hci_le_ev { 7083 void (*func)(struct hci_dev *hdev, void *data, struct sk_buff *skb); 7084 u16 min_len; 7085 u16 max_len; 7086 } hci_le_ev_table[U8_MAX + 1] = { 7087 /* [0x01 = HCI_EV_LE_CONN_COMPLETE] */ 7088 HCI_LE_EV(HCI_EV_LE_CONN_COMPLETE, hci_le_conn_complete_evt, 7089 sizeof(struct hci_ev_le_conn_complete)), 7090 /* [0x02 = HCI_EV_LE_ADVERTISING_REPORT] */ 7091 HCI_LE_EV_VL(HCI_EV_LE_ADVERTISING_REPORT, hci_le_adv_report_evt, 7092 sizeof(struct hci_ev_le_advertising_report), 7093 HCI_MAX_EVENT_SIZE), 7094 /* [0x03 = HCI_EV_LE_CONN_UPDATE_COMPLETE] */ 7095 HCI_LE_EV(HCI_EV_LE_CONN_UPDATE_COMPLETE, 7096 hci_le_conn_update_complete_evt, 7097 sizeof(struct hci_ev_le_conn_update_complete)), 7098 /* [0x04 = HCI_EV_LE_REMOTE_FEAT_COMPLETE] */ 7099 HCI_LE_EV(HCI_EV_LE_REMOTE_FEAT_COMPLETE, 7100 hci_le_remote_feat_complete_evt, 7101 sizeof(struct hci_ev_le_remote_feat_complete)), 7102 /* [0x05 = HCI_EV_LE_LTK_REQ] */ 7103 HCI_LE_EV(HCI_EV_LE_LTK_REQ, hci_le_ltk_request_evt, 7104 sizeof(struct hci_ev_le_ltk_req)), 7105 /* [0x06 = HCI_EV_LE_REMOTE_CONN_PARAM_REQ] */ 7106 HCI_LE_EV(HCI_EV_LE_REMOTE_CONN_PARAM_REQ, 7107 hci_le_remote_conn_param_req_evt, 7108 sizeof(struct hci_ev_le_remote_conn_param_req)), 7109 /* [0x0a = HCI_EV_LE_ENHANCED_CONN_COMPLETE] */ 7110 HCI_LE_EV(HCI_EV_LE_ENHANCED_CONN_COMPLETE, 7111 hci_le_enh_conn_complete_evt, 7112 sizeof(struct hci_ev_le_enh_conn_complete)), 7113 /* [0x0b = HCI_EV_LE_DIRECT_ADV_REPORT] */ 7114 HCI_LE_EV_VL(HCI_EV_LE_DIRECT_ADV_REPORT, hci_le_direct_adv_report_evt, 7115 sizeof(struct hci_ev_le_direct_adv_report), 7116 HCI_MAX_EVENT_SIZE), 7117 /* [0x0c = HCI_EV_LE_PHY_UPDATE_COMPLETE] */ 7118 HCI_LE_EV(HCI_EV_LE_PHY_UPDATE_COMPLETE, hci_le_phy_update_evt, 7119 sizeof(struct hci_ev_le_phy_update_complete)), 7120 /* [0x0d = HCI_EV_LE_EXT_ADV_REPORT] */ 7121 HCI_LE_EV_VL(HCI_EV_LE_EXT_ADV_REPORT, hci_le_ext_adv_report_evt, 7122 sizeof(struct hci_ev_le_ext_adv_report), 7123 HCI_MAX_EVENT_SIZE), 7124 /* [0x0e = HCI_EV_LE_PA_SYNC_ESTABLISHED] */ 7125 HCI_LE_EV(HCI_EV_LE_PA_SYNC_ESTABLISHED, 7126 hci_le_pa_sync_estabilished_evt, 7127 sizeof(struct hci_ev_le_pa_sync_established)), 7128 /* [0x0f = HCI_EV_LE_PER_ADV_REPORT] */ 7129 HCI_LE_EV_VL(HCI_EV_LE_PER_ADV_REPORT, 7130 hci_le_per_adv_report_evt, 7131 sizeof(struct hci_ev_le_per_adv_report), 7132 HCI_MAX_EVENT_SIZE), 7133 /* [0x12 = HCI_EV_LE_EXT_ADV_SET_TERM] */ 7134 HCI_LE_EV(HCI_EV_LE_EXT_ADV_SET_TERM, hci_le_ext_adv_term_evt, 7135 sizeof(struct hci_evt_le_ext_adv_set_term)), 7136 /* [0x19 = HCI_EVT_LE_CIS_ESTABLISHED] */ 7137 HCI_LE_EV(HCI_EVT_LE_CIS_ESTABLISHED, hci_le_cis_estabilished_evt, 7138 sizeof(struct hci_evt_le_cis_established)), 7139 /* [0x1a = HCI_EVT_LE_CIS_REQ] */ 7140 HCI_LE_EV(HCI_EVT_LE_CIS_REQ, hci_le_cis_req_evt, 7141 sizeof(struct hci_evt_le_cis_req)), 7142 /* [0x1b = HCI_EVT_LE_CREATE_BIG_COMPLETE] */ 7143 HCI_LE_EV_VL(HCI_EVT_LE_CREATE_BIG_COMPLETE, 7144 hci_le_create_big_complete_evt, 7145 sizeof(struct hci_evt_le_create_big_complete), 7146 HCI_MAX_EVENT_SIZE), 7147 /* [0x1d = HCI_EV_LE_BIG_SYNC_ESTABLISHED] */ 7148 HCI_LE_EV_VL(HCI_EVT_LE_BIG_SYNC_ESTABLISHED, 7149 hci_le_big_sync_established_evt, 7150 sizeof(struct hci_evt_le_big_sync_estabilished), 7151 HCI_MAX_EVENT_SIZE), 7152 /* [0x22 = HCI_EVT_LE_BIG_INFO_ADV_REPORT] */ 7153 HCI_LE_EV_VL(HCI_EVT_LE_BIG_INFO_ADV_REPORT, 7154 hci_le_big_info_adv_report_evt, 7155 sizeof(struct hci_evt_le_big_info_adv_report), 7156 HCI_MAX_EVENT_SIZE), 7157 }; 7158 7159 static void hci_le_meta_evt(struct hci_dev *hdev, void *data, 7160 struct sk_buff *skb, u16 *opcode, u8 *status, 7161 hci_req_complete_t *req_complete, 7162 hci_req_complete_skb_t *req_complete_skb) 7163 { 7164 struct hci_ev_le_meta *ev = data; 7165 const struct hci_le_ev *subev; 7166 7167 bt_dev_dbg(hdev, "subevent 0x%2.2x", ev->subevent); 7168 7169 /* Only match event if command OGF is for LE */ 7170 if (hdev->req_skb && 7171 (hci_opcode_ogf(hci_skb_opcode(hdev->req_skb)) == 0x08 || 7172 hci_skb_opcode(hdev->req_skb) == HCI_OP_NOP) && 7173 hci_skb_event(hdev->req_skb) == ev->subevent) { 7174 *opcode = hci_skb_opcode(hdev->req_skb); 7175 hci_req_cmd_complete(hdev, *opcode, 0x00, req_complete, 7176 req_complete_skb); 7177 } 7178 7179 subev = &hci_le_ev_table[ev->subevent]; 7180 if (!subev->func) 7181 return; 7182 7183 if (skb->len < subev->min_len) { 7184 bt_dev_err(hdev, "unexpected subevent 0x%2.2x length: %u < %u", 7185 ev->subevent, skb->len, subev->min_len); 7186 return; 7187 } 7188 7189 /* Just warn if the length is over max_len size it still be 7190 * possible to partially parse the event so leave to callback to 7191 * decide if that is acceptable. 7192 */ 7193 if (skb->len > subev->max_len) 7194 bt_dev_warn(hdev, "unexpected subevent 0x%2.2x length: %u > %u", 7195 ev->subevent, skb->len, subev->max_len); 7196 data = hci_le_ev_skb_pull(hdev, skb, ev->subevent, subev->min_len); 7197 if (!data) 7198 return; 7199 7200 subev->func(hdev, data, skb); 7201 } 7202 7203 static bool hci_get_cmd_complete(struct hci_dev *hdev, u16 opcode, 7204 u8 event, struct sk_buff *skb) 7205 { 7206 struct hci_ev_cmd_complete *ev; 7207 struct hci_event_hdr *hdr; 7208 7209 if (!skb) 7210 return false; 7211 7212 hdr = hci_ev_skb_pull(hdev, skb, event, sizeof(*hdr)); 7213 if (!hdr) 7214 return false; 7215 7216 if (event) { 7217 if (hdr->evt != event) 7218 return false; 7219 return true; 7220 } 7221 7222 /* Check if request ended in Command Status - no way to retrieve 7223 * any extra parameters in this case. 7224 */ 7225 if (hdr->evt == HCI_EV_CMD_STATUS) 7226 return false; 7227 7228 if (hdr->evt != HCI_EV_CMD_COMPLETE) { 7229 bt_dev_err(hdev, "last event is not cmd complete (0x%2.2x)", 7230 hdr->evt); 7231 return false; 7232 } 7233 7234 ev = hci_cc_skb_pull(hdev, skb, opcode, sizeof(*ev)); 7235 if (!ev) 7236 return false; 7237 7238 if (opcode != __le16_to_cpu(ev->opcode)) { 7239 BT_DBG("opcode doesn't match (0x%2.2x != 0x%2.2x)", opcode, 7240 __le16_to_cpu(ev->opcode)); 7241 return false; 7242 } 7243 7244 return true; 7245 } 7246 7247 static void hci_store_wake_reason(struct hci_dev *hdev, u8 event, 7248 struct sk_buff *skb) 7249 { 7250 struct hci_ev_le_advertising_info *adv; 7251 struct hci_ev_le_direct_adv_info *direct_adv; 7252 struct hci_ev_le_ext_adv_info *ext_adv; 7253 const struct hci_ev_conn_complete *conn_complete = (void *)skb->data; 7254 const struct hci_ev_conn_request *conn_request = (void *)skb->data; 7255 7256 hci_dev_lock(hdev); 7257 7258 /* If we are currently suspended and this is the first BT event seen, 7259 * save the wake reason associated with the event. 7260 */ 7261 if (!hdev->suspended || hdev->wake_reason) 7262 goto unlock; 7263 7264 /* Default to remote wake. Values for wake_reason are documented in the 7265 * Bluez mgmt api docs. 7266 */ 7267 hdev->wake_reason = MGMT_WAKE_REASON_REMOTE_WAKE; 7268 7269 /* Once configured for remote wakeup, we should only wake up for 7270 * reconnections. It's useful to see which device is waking us up so 7271 * keep track of the bdaddr of the connection event that woke us up. 7272 */ 7273 if (event == HCI_EV_CONN_REQUEST) { 7274 bacpy(&hdev->wake_addr, &conn_request->bdaddr); 7275 hdev->wake_addr_type = BDADDR_BREDR; 7276 } else if (event == HCI_EV_CONN_COMPLETE) { 7277 bacpy(&hdev->wake_addr, &conn_complete->bdaddr); 7278 hdev->wake_addr_type = BDADDR_BREDR; 7279 } else if (event == HCI_EV_LE_META) { 7280 struct hci_ev_le_meta *le_ev = (void *)skb->data; 7281 u8 subevent = le_ev->subevent; 7282 u8 *ptr = &skb->data[sizeof(*le_ev)]; 7283 u8 num_reports = *ptr; 7284 7285 if ((subevent == HCI_EV_LE_ADVERTISING_REPORT || 7286 subevent == HCI_EV_LE_DIRECT_ADV_REPORT || 7287 subevent == HCI_EV_LE_EXT_ADV_REPORT) && 7288 num_reports) { 7289 adv = (void *)(ptr + 1); 7290 direct_adv = (void *)(ptr + 1); 7291 ext_adv = (void *)(ptr + 1); 7292 7293 switch (subevent) { 7294 case HCI_EV_LE_ADVERTISING_REPORT: 7295 bacpy(&hdev->wake_addr, &adv->bdaddr); 7296 hdev->wake_addr_type = adv->bdaddr_type; 7297 break; 7298 case HCI_EV_LE_DIRECT_ADV_REPORT: 7299 bacpy(&hdev->wake_addr, &direct_adv->bdaddr); 7300 hdev->wake_addr_type = direct_adv->bdaddr_type; 7301 break; 7302 case HCI_EV_LE_EXT_ADV_REPORT: 7303 bacpy(&hdev->wake_addr, &ext_adv->bdaddr); 7304 hdev->wake_addr_type = ext_adv->bdaddr_type; 7305 break; 7306 } 7307 } 7308 } else { 7309 hdev->wake_reason = MGMT_WAKE_REASON_UNEXPECTED; 7310 } 7311 7312 unlock: 7313 hci_dev_unlock(hdev); 7314 } 7315 7316 #define HCI_EV_VL(_op, _func, _min_len, _max_len) \ 7317 [_op] = { \ 7318 .req = false, \ 7319 .func = _func, \ 7320 .min_len = _min_len, \ 7321 .max_len = _max_len, \ 7322 } 7323 7324 #define HCI_EV(_op, _func, _len) \ 7325 HCI_EV_VL(_op, _func, _len, _len) 7326 7327 #define HCI_EV_STATUS(_op, _func) \ 7328 HCI_EV(_op, _func, sizeof(struct hci_ev_status)) 7329 7330 #define HCI_EV_REQ_VL(_op, _func, _min_len, _max_len) \ 7331 [_op] = { \ 7332 .req = true, \ 7333 .func_req = _func, \ 7334 .min_len = _min_len, \ 7335 .max_len = _max_len, \ 7336 } 7337 7338 #define HCI_EV_REQ(_op, _func, _len) \ 7339 HCI_EV_REQ_VL(_op, _func, _len, _len) 7340 7341 /* Entries in this table shall have their position according to the event opcode 7342 * they handle so the use of the macros above is recommend since it does attempt 7343 * to initialize at its proper index using Designated Initializers that way 7344 * events without a callback function don't have entered. 7345 */ 7346 static const struct hci_ev { 7347 bool req; 7348 union { 7349 void (*func)(struct hci_dev *hdev, void *data, 7350 struct sk_buff *skb); 7351 void (*func_req)(struct hci_dev *hdev, void *data, 7352 struct sk_buff *skb, u16 *opcode, u8 *status, 7353 hci_req_complete_t *req_complete, 7354 hci_req_complete_skb_t *req_complete_skb); 7355 }; 7356 u16 min_len; 7357 u16 max_len; 7358 } hci_ev_table[U8_MAX + 1] = { 7359 /* [0x01 = HCI_EV_INQUIRY_COMPLETE] */ 7360 HCI_EV_STATUS(HCI_EV_INQUIRY_COMPLETE, hci_inquiry_complete_evt), 7361 /* [0x02 = HCI_EV_INQUIRY_RESULT] */ 7362 HCI_EV_VL(HCI_EV_INQUIRY_RESULT, hci_inquiry_result_evt, 7363 sizeof(struct hci_ev_inquiry_result), HCI_MAX_EVENT_SIZE), 7364 /* [0x03 = HCI_EV_CONN_COMPLETE] */ 7365 HCI_EV(HCI_EV_CONN_COMPLETE, hci_conn_complete_evt, 7366 sizeof(struct hci_ev_conn_complete)), 7367 /* [0x04 = HCI_EV_CONN_REQUEST] */ 7368 HCI_EV(HCI_EV_CONN_REQUEST, hci_conn_request_evt, 7369 sizeof(struct hci_ev_conn_request)), 7370 /* [0x05 = HCI_EV_DISCONN_COMPLETE] */ 7371 HCI_EV(HCI_EV_DISCONN_COMPLETE, hci_disconn_complete_evt, 7372 sizeof(struct hci_ev_disconn_complete)), 7373 /* [0x06 = HCI_EV_AUTH_COMPLETE] */ 7374 HCI_EV(HCI_EV_AUTH_COMPLETE, hci_auth_complete_evt, 7375 sizeof(struct hci_ev_auth_complete)), 7376 /* [0x07 = HCI_EV_REMOTE_NAME] */ 7377 HCI_EV(HCI_EV_REMOTE_NAME, hci_remote_name_evt, 7378 sizeof(struct hci_ev_remote_name)), 7379 /* [0x08 = HCI_EV_ENCRYPT_CHANGE] */ 7380 HCI_EV(HCI_EV_ENCRYPT_CHANGE, hci_encrypt_change_evt, 7381 sizeof(struct hci_ev_encrypt_change)), 7382 /* [0x09 = HCI_EV_CHANGE_LINK_KEY_COMPLETE] */ 7383 HCI_EV(HCI_EV_CHANGE_LINK_KEY_COMPLETE, 7384 hci_change_link_key_complete_evt, 7385 sizeof(struct hci_ev_change_link_key_complete)), 7386 /* [0x0b = HCI_EV_REMOTE_FEATURES] */ 7387 HCI_EV(HCI_EV_REMOTE_FEATURES, hci_remote_features_evt, 7388 sizeof(struct hci_ev_remote_features)), 7389 /* [0x0e = HCI_EV_CMD_COMPLETE] */ 7390 HCI_EV_REQ_VL(HCI_EV_CMD_COMPLETE, hci_cmd_complete_evt, 7391 sizeof(struct hci_ev_cmd_complete), HCI_MAX_EVENT_SIZE), 7392 /* [0x0f = HCI_EV_CMD_STATUS] */ 7393 HCI_EV_REQ(HCI_EV_CMD_STATUS, hci_cmd_status_evt, 7394 sizeof(struct hci_ev_cmd_status)), 7395 /* [0x10 = HCI_EV_CMD_STATUS] */ 7396 HCI_EV(HCI_EV_HARDWARE_ERROR, hci_hardware_error_evt, 7397 sizeof(struct hci_ev_hardware_error)), 7398 /* [0x12 = HCI_EV_ROLE_CHANGE] */ 7399 HCI_EV(HCI_EV_ROLE_CHANGE, hci_role_change_evt, 7400 sizeof(struct hci_ev_role_change)), 7401 /* [0x13 = HCI_EV_NUM_COMP_PKTS] */ 7402 HCI_EV_VL(HCI_EV_NUM_COMP_PKTS, hci_num_comp_pkts_evt, 7403 sizeof(struct hci_ev_num_comp_pkts), HCI_MAX_EVENT_SIZE), 7404 /* [0x14 = HCI_EV_MODE_CHANGE] */ 7405 HCI_EV(HCI_EV_MODE_CHANGE, hci_mode_change_evt, 7406 sizeof(struct hci_ev_mode_change)), 7407 /* [0x16 = HCI_EV_PIN_CODE_REQ] */ 7408 HCI_EV(HCI_EV_PIN_CODE_REQ, hci_pin_code_request_evt, 7409 sizeof(struct hci_ev_pin_code_req)), 7410 /* [0x17 = HCI_EV_LINK_KEY_REQ] */ 7411 HCI_EV(HCI_EV_LINK_KEY_REQ, hci_link_key_request_evt, 7412 sizeof(struct hci_ev_link_key_req)), 7413 /* [0x18 = HCI_EV_LINK_KEY_NOTIFY] */ 7414 HCI_EV(HCI_EV_LINK_KEY_NOTIFY, hci_link_key_notify_evt, 7415 sizeof(struct hci_ev_link_key_notify)), 7416 /* [0x1c = HCI_EV_CLOCK_OFFSET] */ 7417 HCI_EV(HCI_EV_CLOCK_OFFSET, hci_clock_offset_evt, 7418 sizeof(struct hci_ev_clock_offset)), 7419 /* [0x1d = HCI_EV_PKT_TYPE_CHANGE] */ 7420 HCI_EV(HCI_EV_PKT_TYPE_CHANGE, hci_pkt_type_change_evt, 7421 sizeof(struct hci_ev_pkt_type_change)), 7422 /* [0x20 = HCI_EV_PSCAN_REP_MODE] */ 7423 HCI_EV(HCI_EV_PSCAN_REP_MODE, hci_pscan_rep_mode_evt, 7424 sizeof(struct hci_ev_pscan_rep_mode)), 7425 /* [0x22 = HCI_EV_INQUIRY_RESULT_WITH_RSSI] */ 7426 HCI_EV_VL(HCI_EV_INQUIRY_RESULT_WITH_RSSI, 7427 hci_inquiry_result_with_rssi_evt, 7428 sizeof(struct hci_ev_inquiry_result_rssi), 7429 HCI_MAX_EVENT_SIZE), 7430 /* [0x23 = HCI_EV_REMOTE_EXT_FEATURES] */ 7431 HCI_EV(HCI_EV_REMOTE_EXT_FEATURES, hci_remote_ext_features_evt, 7432 sizeof(struct hci_ev_remote_ext_features)), 7433 /* [0x2c = HCI_EV_SYNC_CONN_COMPLETE] */ 7434 HCI_EV(HCI_EV_SYNC_CONN_COMPLETE, hci_sync_conn_complete_evt, 7435 sizeof(struct hci_ev_sync_conn_complete)), 7436 /* [0x2d = HCI_EV_EXTENDED_INQUIRY_RESULT] */ 7437 HCI_EV_VL(HCI_EV_EXTENDED_INQUIRY_RESULT, 7438 hci_extended_inquiry_result_evt, 7439 sizeof(struct hci_ev_ext_inquiry_result), HCI_MAX_EVENT_SIZE), 7440 /* [0x30 = HCI_EV_KEY_REFRESH_COMPLETE] */ 7441 HCI_EV(HCI_EV_KEY_REFRESH_COMPLETE, hci_key_refresh_complete_evt, 7442 sizeof(struct hci_ev_key_refresh_complete)), 7443 /* [0x31 = HCI_EV_IO_CAPA_REQUEST] */ 7444 HCI_EV(HCI_EV_IO_CAPA_REQUEST, hci_io_capa_request_evt, 7445 sizeof(struct hci_ev_io_capa_request)), 7446 /* [0x32 = HCI_EV_IO_CAPA_REPLY] */ 7447 HCI_EV(HCI_EV_IO_CAPA_REPLY, hci_io_capa_reply_evt, 7448 sizeof(struct hci_ev_io_capa_reply)), 7449 /* [0x33 = HCI_EV_USER_CONFIRM_REQUEST] */ 7450 HCI_EV(HCI_EV_USER_CONFIRM_REQUEST, hci_user_confirm_request_evt, 7451 sizeof(struct hci_ev_user_confirm_req)), 7452 /* [0x34 = HCI_EV_USER_PASSKEY_REQUEST] */ 7453 HCI_EV(HCI_EV_USER_PASSKEY_REQUEST, hci_user_passkey_request_evt, 7454 sizeof(struct hci_ev_user_passkey_req)), 7455 /* [0x35 = HCI_EV_REMOTE_OOB_DATA_REQUEST] */ 7456 HCI_EV(HCI_EV_REMOTE_OOB_DATA_REQUEST, hci_remote_oob_data_request_evt, 7457 sizeof(struct hci_ev_remote_oob_data_request)), 7458 /* [0x36 = HCI_EV_SIMPLE_PAIR_COMPLETE] */ 7459 HCI_EV(HCI_EV_SIMPLE_PAIR_COMPLETE, hci_simple_pair_complete_evt, 7460 sizeof(struct hci_ev_simple_pair_complete)), 7461 /* [0x3b = HCI_EV_USER_PASSKEY_NOTIFY] */ 7462 HCI_EV(HCI_EV_USER_PASSKEY_NOTIFY, hci_user_passkey_notify_evt, 7463 sizeof(struct hci_ev_user_passkey_notify)), 7464 /* [0x3c = HCI_EV_KEYPRESS_NOTIFY] */ 7465 HCI_EV(HCI_EV_KEYPRESS_NOTIFY, hci_keypress_notify_evt, 7466 sizeof(struct hci_ev_keypress_notify)), 7467 /* [0x3d = HCI_EV_REMOTE_HOST_FEATURES] */ 7468 HCI_EV(HCI_EV_REMOTE_HOST_FEATURES, hci_remote_host_features_evt, 7469 sizeof(struct hci_ev_remote_host_features)), 7470 /* [0x3e = HCI_EV_LE_META] */ 7471 HCI_EV_REQ_VL(HCI_EV_LE_META, hci_le_meta_evt, 7472 sizeof(struct hci_ev_le_meta), HCI_MAX_EVENT_SIZE), 7473 /* [0xff = HCI_EV_VENDOR] */ 7474 HCI_EV_VL(HCI_EV_VENDOR, msft_vendor_evt, 0, HCI_MAX_EVENT_SIZE), 7475 }; 7476 7477 static void hci_event_func(struct hci_dev *hdev, u8 event, struct sk_buff *skb, 7478 u16 *opcode, u8 *status, 7479 hci_req_complete_t *req_complete, 7480 hci_req_complete_skb_t *req_complete_skb) 7481 { 7482 const struct hci_ev *ev = &hci_ev_table[event]; 7483 void *data; 7484 7485 if (!ev->func) 7486 return; 7487 7488 if (skb->len < ev->min_len) { 7489 bt_dev_err(hdev, "unexpected event 0x%2.2x length: %u < %u", 7490 event, skb->len, ev->min_len); 7491 return; 7492 } 7493 7494 /* Just warn if the length is over max_len size it still be 7495 * possible to partially parse the event so leave to callback to 7496 * decide if that is acceptable. 7497 */ 7498 if (skb->len > ev->max_len) 7499 bt_dev_warn_ratelimited(hdev, 7500 "unexpected event 0x%2.2x length: %u > %u", 7501 event, skb->len, ev->max_len); 7502 7503 data = hci_ev_skb_pull(hdev, skb, event, ev->min_len); 7504 if (!data) 7505 return; 7506 7507 if (ev->req) 7508 ev->func_req(hdev, data, skb, opcode, status, req_complete, 7509 req_complete_skb); 7510 else 7511 ev->func(hdev, data, skb); 7512 } 7513 7514 void hci_event_packet(struct hci_dev *hdev, struct sk_buff *skb) 7515 { 7516 struct hci_event_hdr *hdr = (void *) skb->data; 7517 hci_req_complete_t req_complete = NULL; 7518 hci_req_complete_skb_t req_complete_skb = NULL; 7519 struct sk_buff *orig_skb = NULL; 7520 u8 status = 0, event, req_evt = 0; 7521 u16 opcode = HCI_OP_NOP; 7522 7523 if (skb->len < sizeof(*hdr)) { 7524 bt_dev_err(hdev, "Malformed HCI Event"); 7525 goto done; 7526 } 7527 7528 hci_dev_lock(hdev); 7529 kfree_skb(hdev->recv_event); 7530 hdev->recv_event = skb_clone(skb, GFP_KERNEL); 7531 hci_dev_unlock(hdev); 7532 7533 event = hdr->evt; 7534 if (!event) { 7535 bt_dev_warn(hdev, "Received unexpected HCI Event 0x%2.2x", 7536 event); 7537 goto done; 7538 } 7539 7540 /* Only match event if command OGF is not for LE */ 7541 if (hdev->req_skb && 7542 hci_opcode_ogf(hci_skb_opcode(hdev->req_skb)) != 0x08 && 7543 hci_skb_event(hdev->req_skb) == event) { 7544 hci_req_cmd_complete(hdev, hci_skb_opcode(hdev->req_skb), 7545 status, &req_complete, &req_complete_skb); 7546 req_evt = event; 7547 } 7548 7549 /* If it looks like we might end up having to call 7550 * req_complete_skb, store a pristine copy of the skb since the 7551 * various handlers may modify the original one through 7552 * skb_pull() calls, etc. 7553 */ 7554 if (req_complete_skb || event == HCI_EV_CMD_STATUS || 7555 event == HCI_EV_CMD_COMPLETE) 7556 orig_skb = skb_clone(skb, GFP_KERNEL); 7557 7558 skb_pull(skb, HCI_EVENT_HDR_SIZE); 7559 7560 /* Store wake reason if we're suspended */ 7561 hci_store_wake_reason(hdev, event, skb); 7562 7563 bt_dev_dbg(hdev, "event 0x%2.2x", event); 7564 7565 hci_event_func(hdev, event, skb, &opcode, &status, &req_complete, 7566 &req_complete_skb); 7567 7568 if (req_complete) { 7569 req_complete(hdev, status, opcode); 7570 } else if (req_complete_skb) { 7571 if (!hci_get_cmd_complete(hdev, opcode, req_evt, orig_skb)) { 7572 kfree_skb(orig_skb); 7573 orig_skb = NULL; 7574 } 7575 req_complete_skb(hdev, status, opcode, orig_skb); 7576 } 7577 7578 done: 7579 kfree_skb(orig_skb); 7580 kfree_skb(skb); 7581 hdev->stat.evt_rx++; 7582 } 7583