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 (hci_test_quirk(hdev, 912 HCI_QUIRK_BROKEN_LOCAL_EXT_FEATURES_PAGE_2)) 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 (hci_test_quirk(hdev, HCI_QUIRK_FIXUP_BUFFER_SIZE)) { 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_read_rssi(struct hci_dev *hdev, void *data, 2154 struct sk_buff *skb) 2155 { 2156 struct hci_rp_read_rssi *rp = data; 2157 struct hci_conn *conn; 2158 2159 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 2160 2161 if (rp->status) 2162 return rp->status; 2163 2164 hci_dev_lock(hdev); 2165 2166 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(rp->handle)); 2167 if (conn) 2168 conn->rssi = rp->rssi; 2169 2170 hci_dev_unlock(hdev); 2171 2172 return rp->status; 2173 } 2174 2175 static u8 hci_cc_read_tx_power(struct hci_dev *hdev, void *data, 2176 struct sk_buff *skb) 2177 { 2178 struct hci_cp_read_tx_power *sent; 2179 struct hci_rp_read_tx_power *rp = data; 2180 struct hci_conn *conn; 2181 2182 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 2183 2184 if (rp->status) 2185 return rp->status; 2186 2187 sent = hci_sent_cmd_data(hdev, HCI_OP_READ_TX_POWER); 2188 if (!sent) 2189 return rp->status; 2190 2191 hci_dev_lock(hdev); 2192 2193 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(rp->handle)); 2194 if (!conn) 2195 goto unlock; 2196 2197 switch (sent->type) { 2198 case 0x00: 2199 conn->tx_power = rp->tx_power; 2200 break; 2201 case 0x01: 2202 conn->max_tx_power = rp->tx_power; 2203 break; 2204 } 2205 2206 unlock: 2207 hci_dev_unlock(hdev); 2208 return rp->status; 2209 } 2210 2211 static u8 hci_cc_write_ssp_debug_mode(struct hci_dev *hdev, void *data, 2212 struct sk_buff *skb) 2213 { 2214 struct hci_ev_status *rp = data; 2215 u8 *mode; 2216 2217 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 2218 2219 if (rp->status) 2220 return rp->status; 2221 2222 mode = hci_sent_cmd_data(hdev, HCI_OP_WRITE_SSP_DEBUG_MODE); 2223 if (mode) 2224 hdev->ssp_debug_mode = *mode; 2225 2226 return rp->status; 2227 } 2228 2229 static void hci_cs_inquiry(struct hci_dev *hdev, __u8 status) 2230 { 2231 bt_dev_dbg(hdev, "status 0x%2.2x", status); 2232 2233 if (status) 2234 return; 2235 2236 if (hci_sent_cmd_data(hdev, HCI_OP_INQUIRY)) 2237 set_bit(HCI_INQUIRY, &hdev->flags); 2238 } 2239 2240 static void hci_cs_create_conn(struct hci_dev *hdev, __u8 status) 2241 { 2242 struct hci_cp_create_conn *cp; 2243 struct hci_conn *conn; 2244 2245 bt_dev_dbg(hdev, "status 0x%2.2x", status); 2246 2247 cp = hci_sent_cmd_data(hdev, HCI_OP_CREATE_CONN); 2248 if (!cp) 2249 return; 2250 2251 hci_dev_lock(hdev); 2252 2253 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &cp->bdaddr); 2254 2255 bt_dev_dbg(hdev, "bdaddr %pMR hcon %p", &cp->bdaddr, conn); 2256 2257 if (status) { 2258 if (conn && conn->state == BT_CONNECT) { 2259 conn->state = BT_CLOSED; 2260 hci_connect_cfm(conn, status); 2261 hci_conn_del(conn); 2262 } 2263 } else { 2264 if (!conn) { 2265 conn = hci_conn_add_unset(hdev, ACL_LINK, &cp->bdaddr, 2266 HCI_ROLE_MASTER); 2267 if (IS_ERR(conn)) 2268 bt_dev_err(hdev, "connection err: %ld", PTR_ERR(conn)); 2269 } 2270 } 2271 2272 hci_dev_unlock(hdev); 2273 } 2274 2275 static void hci_cs_add_sco(struct hci_dev *hdev, __u8 status) 2276 { 2277 struct hci_cp_add_sco *cp; 2278 struct hci_conn *acl; 2279 struct hci_link *link; 2280 __u16 handle; 2281 2282 bt_dev_dbg(hdev, "status 0x%2.2x", status); 2283 2284 if (!status) 2285 return; 2286 2287 cp = hci_sent_cmd_data(hdev, HCI_OP_ADD_SCO); 2288 if (!cp) 2289 return; 2290 2291 handle = __le16_to_cpu(cp->handle); 2292 2293 bt_dev_dbg(hdev, "handle 0x%4.4x", handle); 2294 2295 hci_dev_lock(hdev); 2296 2297 acl = hci_conn_hash_lookup_handle(hdev, handle); 2298 if (acl) { 2299 link = list_first_entry_or_null(&acl->link_list, 2300 struct hci_link, list); 2301 if (link && link->conn) { 2302 link->conn->state = BT_CLOSED; 2303 2304 hci_connect_cfm(link->conn, status); 2305 hci_conn_del(link->conn); 2306 } 2307 } 2308 2309 hci_dev_unlock(hdev); 2310 } 2311 2312 static void hci_cs_auth_requested(struct hci_dev *hdev, __u8 status) 2313 { 2314 struct hci_cp_auth_requested *cp; 2315 struct hci_conn *conn; 2316 2317 bt_dev_dbg(hdev, "status 0x%2.2x", status); 2318 2319 if (!status) 2320 return; 2321 2322 cp = hci_sent_cmd_data(hdev, HCI_OP_AUTH_REQUESTED); 2323 if (!cp) 2324 return; 2325 2326 hci_dev_lock(hdev); 2327 2328 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle)); 2329 if (conn) { 2330 if (conn->state == BT_CONFIG) { 2331 hci_connect_cfm(conn, status); 2332 hci_conn_drop(conn); 2333 } 2334 } 2335 2336 hci_dev_unlock(hdev); 2337 } 2338 2339 static void hci_cs_set_conn_encrypt(struct hci_dev *hdev, __u8 status) 2340 { 2341 struct hci_cp_set_conn_encrypt *cp; 2342 struct hci_conn *conn; 2343 2344 bt_dev_dbg(hdev, "status 0x%2.2x", status); 2345 2346 if (!status) 2347 return; 2348 2349 cp = hci_sent_cmd_data(hdev, HCI_OP_SET_CONN_ENCRYPT); 2350 if (!cp) 2351 return; 2352 2353 hci_dev_lock(hdev); 2354 2355 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle)); 2356 if (conn) { 2357 if (conn->state == BT_CONFIG) { 2358 hci_connect_cfm(conn, status); 2359 hci_conn_drop(conn); 2360 } 2361 } 2362 2363 hci_dev_unlock(hdev); 2364 } 2365 2366 static int hci_outgoing_auth_needed(struct hci_dev *hdev, 2367 struct hci_conn *conn) 2368 { 2369 if (conn->state != BT_CONFIG || !conn->out) 2370 return 0; 2371 2372 if (conn->pending_sec_level == BT_SECURITY_SDP) 2373 return 0; 2374 2375 /* Only request authentication for SSP connections or non-SSP 2376 * devices with sec_level MEDIUM or HIGH or if MITM protection 2377 * is requested. 2378 */ 2379 if (!hci_conn_ssp_enabled(conn) && !(conn->auth_type & 0x01) && 2380 conn->pending_sec_level != BT_SECURITY_FIPS && 2381 conn->pending_sec_level != BT_SECURITY_HIGH && 2382 conn->pending_sec_level != BT_SECURITY_MEDIUM) 2383 return 0; 2384 2385 return 1; 2386 } 2387 2388 static int hci_resolve_name(struct hci_dev *hdev, 2389 struct inquiry_entry *e) 2390 { 2391 struct hci_cp_remote_name_req cp; 2392 2393 memset(&cp, 0, sizeof(cp)); 2394 2395 bacpy(&cp.bdaddr, &e->data.bdaddr); 2396 cp.pscan_rep_mode = e->data.pscan_rep_mode; 2397 cp.pscan_mode = e->data.pscan_mode; 2398 cp.clock_offset = e->data.clock_offset; 2399 2400 return hci_send_cmd(hdev, HCI_OP_REMOTE_NAME_REQ, sizeof(cp), &cp); 2401 } 2402 2403 static bool hci_resolve_next_name(struct hci_dev *hdev) 2404 { 2405 struct discovery_state *discov = &hdev->discovery; 2406 struct inquiry_entry *e; 2407 2408 if (list_empty(&discov->resolve)) 2409 return false; 2410 2411 /* We should stop if we already spent too much time resolving names. */ 2412 if (time_after(jiffies, discov->name_resolve_timeout)) { 2413 bt_dev_warn_ratelimited(hdev, "Name resolve takes too long."); 2414 return false; 2415 } 2416 2417 e = hci_inquiry_cache_lookup_resolve(hdev, BDADDR_ANY, NAME_NEEDED); 2418 if (!e) 2419 return false; 2420 2421 if (hci_resolve_name(hdev, e) == 0) { 2422 e->name_state = NAME_PENDING; 2423 return true; 2424 } 2425 2426 return false; 2427 } 2428 2429 static void hci_check_pending_name(struct hci_dev *hdev, struct hci_conn *conn, 2430 bdaddr_t *bdaddr, u8 *name, u8 name_len) 2431 { 2432 struct discovery_state *discov = &hdev->discovery; 2433 struct inquiry_entry *e; 2434 2435 /* Update the mgmt connected state if necessary. Be careful with 2436 * conn objects that exist but are not (yet) connected however. 2437 * Only those in BT_CONFIG or BT_CONNECTED states can be 2438 * considered connected. 2439 */ 2440 if (conn && (conn->state == BT_CONFIG || conn->state == BT_CONNECTED)) 2441 mgmt_device_connected(hdev, conn, name, name_len); 2442 2443 if (discov->state == DISCOVERY_STOPPED) 2444 return; 2445 2446 if (discov->state == DISCOVERY_STOPPING) 2447 goto discov_complete; 2448 2449 if (discov->state != DISCOVERY_RESOLVING) 2450 return; 2451 2452 e = hci_inquiry_cache_lookup_resolve(hdev, bdaddr, NAME_PENDING); 2453 /* If the device was not found in a list of found devices names of which 2454 * are pending. there is no need to continue resolving a next name as it 2455 * will be done upon receiving another Remote Name Request Complete 2456 * Event */ 2457 if (!e) 2458 return; 2459 2460 list_del(&e->list); 2461 2462 e->name_state = name ? NAME_KNOWN : NAME_NOT_KNOWN; 2463 mgmt_remote_name(hdev, bdaddr, ACL_LINK, 0x00, e->data.rssi, 2464 name, name_len); 2465 2466 if (hci_resolve_next_name(hdev)) 2467 return; 2468 2469 discov_complete: 2470 hci_discovery_set_state(hdev, DISCOVERY_STOPPED); 2471 } 2472 2473 static void hci_cs_remote_name_req(struct hci_dev *hdev, __u8 status) 2474 { 2475 struct hci_cp_remote_name_req *cp; 2476 struct hci_conn *conn; 2477 2478 bt_dev_dbg(hdev, "status 0x%2.2x", status); 2479 2480 /* If successful wait for the name req complete event before 2481 * checking for the need to do authentication */ 2482 if (!status) 2483 return; 2484 2485 cp = hci_sent_cmd_data(hdev, HCI_OP_REMOTE_NAME_REQ); 2486 if (!cp) 2487 return; 2488 2489 hci_dev_lock(hdev); 2490 2491 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &cp->bdaddr); 2492 2493 if (hci_dev_test_flag(hdev, HCI_MGMT)) 2494 hci_check_pending_name(hdev, conn, &cp->bdaddr, NULL, 0); 2495 2496 if (!conn) 2497 goto unlock; 2498 2499 if (!hci_outgoing_auth_needed(hdev, conn)) 2500 goto unlock; 2501 2502 if (!test_and_set_bit(HCI_CONN_AUTH_PEND, &conn->flags)) { 2503 struct hci_cp_auth_requested auth_cp; 2504 2505 set_bit(HCI_CONN_AUTH_INITIATOR, &conn->flags); 2506 2507 auth_cp.handle = __cpu_to_le16(conn->handle); 2508 hci_send_cmd(hdev, HCI_OP_AUTH_REQUESTED, 2509 sizeof(auth_cp), &auth_cp); 2510 } 2511 2512 unlock: 2513 hci_dev_unlock(hdev); 2514 } 2515 2516 static void hci_cs_read_remote_features(struct hci_dev *hdev, __u8 status) 2517 { 2518 struct hci_cp_read_remote_features *cp; 2519 struct hci_conn *conn; 2520 2521 bt_dev_dbg(hdev, "status 0x%2.2x", status); 2522 2523 if (!status) 2524 return; 2525 2526 cp = hci_sent_cmd_data(hdev, HCI_OP_READ_REMOTE_FEATURES); 2527 if (!cp) 2528 return; 2529 2530 hci_dev_lock(hdev); 2531 2532 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle)); 2533 if (conn) { 2534 if (conn->state == BT_CONFIG) { 2535 hci_connect_cfm(conn, status); 2536 hci_conn_drop(conn); 2537 } 2538 } 2539 2540 hci_dev_unlock(hdev); 2541 } 2542 2543 static void hci_cs_read_remote_ext_features(struct hci_dev *hdev, __u8 status) 2544 { 2545 struct hci_cp_read_remote_ext_features *cp; 2546 struct hci_conn *conn; 2547 2548 bt_dev_dbg(hdev, "status 0x%2.2x", status); 2549 2550 if (!status) 2551 return; 2552 2553 cp = hci_sent_cmd_data(hdev, HCI_OP_READ_REMOTE_EXT_FEATURES); 2554 if (!cp) 2555 return; 2556 2557 hci_dev_lock(hdev); 2558 2559 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle)); 2560 if (conn) { 2561 if (conn->state == BT_CONFIG) { 2562 hci_connect_cfm(conn, status); 2563 hci_conn_drop(conn); 2564 } 2565 } 2566 2567 hci_dev_unlock(hdev); 2568 } 2569 2570 static void hci_setup_sync_conn_status(struct hci_dev *hdev, __u16 handle, 2571 __u8 status) 2572 { 2573 struct hci_conn *acl; 2574 struct hci_link *link; 2575 2576 bt_dev_dbg(hdev, "handle 0x%4.4x status 0x%2.2x", handle, status); 2577 2578 hci_dev_lock(hdev); 2579 2580 acl = hci_conn_hash_lookup_handle(hdev, handle); 2581 if (acl) { 2582 link = list_first_entry_or_null(&acl->link_list, 2583 struct hci_link, list); 2584 if (link && link->conn) { 2585 link->conn->state = BT_CLOSED; 2586 2587 hci_connect_cfm(link->conn, status); 2588 hci_conn_del(link->conn); 2589 } 2590 } 2591 2592 hci_dev_unlock(hdev); 2593 } 2594 2595 static void hci_cs_setup_sync_conn(struct hci_dev *hdev, __u8 status) 2596 { 2597 struct hci_cp_setup_sync_conn *cp; 2598 2599 bt_dev_dbg(hdev, "status 0x%2.2x", status); 2600 2601 if (!status) 2602 return; 2603 2604 cp = hci_sent_cmd_data(hdev, HCI_OP_SETUP_SYNC_CONN); 2605 if (!cp) 2606 return; 2607 2608 hci_setup_sync_conn_status(hdev, __le16_to_cpu(cp->handle), status); 2609 } 2610 2611 static void hci_cs_enhanced_setup_sync_conn(struct hci_dev *hdev, __u8 status) 2612 { 2613 struct hci_cp_enhanced_setup_sync_conn *cp; 2614 2615 bt_dev_dbg(hdev, "status 0x%2.2x", status); 2616 2617 if (!status) 2618 return; 2619 2620 cp = hci_sent_cmd_data(hdev, HCI_OP_ENHANCED_SETUP_SYNC_CONN); 2621 if (!cp) 2622 return; 2623 2624 hci_setup_sync_conn_status(hdev, __le16_to_cpu(cp->handle), status); 2625 } 2626 2627 static void hci_cs_sniff_mode(struct hci_dev *hdev, __u8 status) 2628 { 2629 struct hci_cp_sniff_mode *cp; 2630 struct hci_conn *conn; 2631 2632 bt_dev_dbg(hdev, "status 0x%2.2x", status); 2633 2634 if (!status) 2635 return; 2636 2637 cp = hci_sent_cmd_data(hdev, HCI_OP_SNIFF_MODE); 2638 if (!cp) 2639 return; 2640 2641 hci_dev_lock(hdev); 2642 2643 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle)); 2644 if (conn) { 2645 clear_bit(HCI_CONN_MODE_CHANGE_PEND, &conn->flags); 2646 2647 if (test_and_clear_bit(HCI_CONN_SCO_SETUP_PEND, &conn->flags)) 2648 hci_sco_setup(conn, status); 2649 } 2650 2651 hci_dev_unlock(hdev); 2652 } 2653 2654 static void hci_cs_exit_sniff_mode(struct hci_dev *hdev, __u8 status) 2655 { 2656 struct hci_cp_exit_sniff_mode *cp; 2657 struct hci_conn *conn; 2658 2659 bt_dev_dbg(hdev, "status 0x%2.2x", status); 2660 2661 if (!status) 2662 return; 2663 2664 cp = hci_sent_cmd_data(hdev, HCI_OP_EXIT_SNIFF_MODE); 2665 if (!cp) 2666 return; 2667 2668 hci_dev_lock(hdev); 2669 2670 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle)); 2671 if (conn) { 2672 clear_bit(HCI_CONN_MODE_CHANGE_PEND, &conn->flags); 2673 2674 if (test_and_clear_bit(HCI_CONN_SCO_SETUP_PEND, &conn->flags)) 2675 hci_sco_setup(conn, status); 2676 } 2677 2678 hci_dev_unlock(hdev); 2679 } 2680 2681 static void hci_cs_disconnect(struct hci_dev *hdev, u8 status) 2682 { 2683 struct hci_cp_disconnect *cp; 2684 struct hci_conn_params *params; 2685 struct hci_conn *conn; 2686 bool mgmt_conn; 2687 2688 bt_dev_dbg(hdev, "status 0x%2.2x", status); 2689 2690 /* Wait for HCI_EV_DISCONN_COMPLETE if status 0x00 and not suspended 2691 * otherwise cleanup the connection immediately. 2692 */ 2693 if (!status && !hdev->suspended) 2694 return; 2695 2696 cp = hci_sent_cmd_data(hdev, HCI_OP_DISCONNECT); 2697 if (!cp) 2698 return; 2699 2700 hci_dev_lock(hdev); 2701 2702 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle)); 2703 if (!conn) 2704 goto unlock; 2705 2706 if (status && status != HCI_ERROR_UNKNOWN_CONN_ID) { 2707 mgmt_disconnect_failed(hdev, &conn->dst, conn->type, 2708 conn->dst_type, status); 2709 2710 if (conn->type == LE_LINK && conn->role == HCI_ROLE_SLAVE) { 2711 hdev->cur_adv_instance = conn->adv_instance; 2712 hci_enable_advertising(hdev); 2713 } 2714 2715 /* Inform sockets conn is gone before we delete it */ 2716 hci_disconn_cfm(conn, HCI_ERROR_UNSPECIFIED); 2717 2718 goto done; 2719 } 2720 2721 /* During suspend, mark connection as closed immediately 2722 * since we might not receive HCI_EV_DISCONN_COMPLETE 2723 */ 2724 if (hdev->suspended) 2725 conn->state = BT_CLOSED; 2726 2727 mgmt_conn = test_and_clear_bit(HCI_CONN_MGMT_CONNECTED, &conn->flags); 2728 2729 if (conn->type == ACL_LINK) { 2730 if (test_and_clear_bit(HCI_CONN_FLUSH_KEY, &conn->flags)) 2731 hci_remove_link_key(hdev, &conn->dst); 2732 } 2733 2734 params = hci_conn_params_lookup(hdev, &conn->dst, conn->dst_type); 2735 if (params) { 2736 switch (params->auto_connect) { 2737 case HCI_AUTO_CONN_LINK_LOSS: 2738 if (cp->reason != HCI_ERROR_CONNECTION_TIMEOUT) 2739 break; 2740 fallthrough; 2741 2742 case HCI_AUTO_CONN_DIRECT: 2743 case HCI_AUTO_CONN_ALWAYS: 2744 hci_pend_le_list_del_init(params); 2745 hci_pend_le_list_add(params, &hdev->pend_le_conns); 2746 break; 2747 2748 default: 2749 break; 2750 } 2751 } 2752 2753 mgmt_device_disconnected(hdev, &conn->dst, conn->type, conn->dst_type, 2754 cp->reason, mgmt_conn); 2755 2756 hci_disconn_cfm(conn, cp->reason); 2757 2758 done: 2759 /* If the disconnection failed for any reason, the upper layer 2760 * does not retry to disconnect in current implementation. 2761 * Hence, we need to do some basic cleanup here and re-enable 2762 * advertising if necessary. 2763 */ 2764 hci_conn_del(conn); 2765 unlock: 2766 hci_dev_unlock(hdev); 2767 } 2768 2769 static u8 ev_bdaddr_type(struct hci_dev *hdev, u8 type, bool *resolved) 2770 { 2771 /* When using controller based address resolution, then the new 2772 * address types 0x02 and 0x03 are used. These types need to be 2773 * converted back into either public address or random address type 2774 */ 2775 switch (type) { 2776 case ADDR_LE_DEV_PUBLIC_RESOLVED: 2777 if (resolved) 2778 *resolved = true; 2779 return ADDR_LE_DEV_PUBLIC; 2780 case ADDR_LE_DEV_RANDOM_RESOLVED: 2781 if (resolved) 2782 *resolved = true; 2783 return ADDR_LE_DEV_RANDOM; 2784 } 2785 2786 if (resolved) 2787 *resolved = false; 2788 return type; 2789 } 2790 2791 static void cs_le_create_conn(struct hci_dev *hdev, bdaddr_t *peer_addr, 2792 u8 peer_addr_type, u8 own_address_type, 2793 u8 filter_policy) 2794 { 2795 struct hci_conn *conn; 2796 2797 conn = hci_conn_hash_lookup_le(hdev, peer_addr, 2798 peer_addr_type); 2799 if (!conn) 2800 return; 2801 2802 own_address_type = ev_bdaddr_type(hdev, own_address_type, NULL); 2803 2804 /* Store the initiator and responder address information which 2805 * is needed for SMP. These values will not change during the 2806 * lifetime of the connection. 2807 */ 2808 conn->init_addr_type = own_address_type; 2809 if (own_address_type == ADDR_LE_DEV_RANDOM) 2810 bacpy(&conn->init_addr, &hdev->random_addr); 2811 else 2812 bacpy(&conn->init_addr, &hdev->bdaddr); 2813 2814 conn->resp_addr_type = peer_addr_type; 2815 bacpy(&conn->resp_addr, peer_addr); 2816 } 2817 2818 static void hci_cs_le_create_conn(struct hci_dev *hdev, u8 status) 2819 { 2820 struct hci_cp_le_create_conn *cp; 2821 2822 bt_dev_dbg(hdev, "status 0x%2.2x", status); 2823 2824 /* All connection failure handling is taken care of by the 2825 * hci_conn_failed function which is triggered by the HCI 2826 * request completion callbacks used for connecting. 2827 */ 2828 if (status) 2829 return; 2830 2831 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_CREATE_CONN); 2832 if (!cp) 2833 return; 2834 2835 hci_dev_lock(hdev); 2836 2837 cs_le_create_conn(hdev, &cp->peer_addr, cp->peer_addr_type, 2838 cp->own_address_type, cp->filter_policy); 2839 2840 hci_dev_unlock(hdev); 2841 } 2842 2843 static void hci_cs_le_ext_create_conn(struct hci_dev *hdev, u8 status) 2844 { 2845 struct hci_cp_le_ext_create_conn *cp; 2846 2847 bt_dev_dbg(hdev, "status 0x%2.2x", status); 2848 2849 /* All connection failure handling is taken care of by the 2850 * hci_conn_failed function which is triggered by the HCI 2851 * request completion callbacks used for connecting. 2852 */ 2853 if (status) 2854 return; 2855 2856 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_EXT_CREATE_CONN); 2857 if (!cp) 2858 return; 2859 2860 hci_dev_lock(hdev); 2861 2862 cs_le_create_conn(hdev, &cp->peer_addr, cp->peer_addr_type, 2863 cp->own_addr_type, cp->filter_policy); 2864 2865 hci_dev_unlock(hdev); 2866 } 2867 2868 static void hci_cs_le_read_remote_features(struct hci_dev *hdev, u8 status) 2869 { 2870 struct hci_cp_le_read_remote_features *cp; 2871 struct hci_conn *conn; 2872 2873 bt_dev_dbg(hdev, "status 0x%2.2x", status); 2874 2875 if (!status) 2876 return; 2877 2878 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_READ_REMOTE_FEATURES); 2879 if (!cp) 2880 return; 2881 2882 hci_dev_lock(hdev); 2883 2884 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle)); 2885 if (conn) { 2886 if (conn->state == BT_CONFIG) { 2887 hci_connect_cfm(conn, status); 2888 hci_conn_drop(conn); 2889 } 2890 } 2891 2892 hci_dev_unlock(hdev); 2893 } 2894 2895 static void hci_cs_le_start_enc(struct hci_dev *hdev, u8 status) 2896 { 2897 struct hci_cp_le_start_enc *cp; 2898 struct hci_conn *conn; 2899 2900 bt_dev_dbg(hdev, "status 0x%2.2x", status); 2901 2902 if (!status) 2903 return; 2904 2905 hci_dev_lock(hdev); 2906 2907 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_START_ENC); 2908 if (!cp) 2909 goto unlock; 2910 2911 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle)); 2912 if (!conn) 2913 goto unlock; 2914 2915 if (conn->state != BT_CONNECTED) 2916 goto unlock; 2917 2918 hci_disconnect(conn, HCI_ERROR_AUTH_FAILURE); 2919 hci_conn_drop(conn); 2920 2921 unlock: 2922 hci_dev_unlock(hdev); 2923 } 2924 2925 static void hci_cs_switch_role(struct hci_dev *hdev, u8 status) 2926 { 2927 struct hci_cp_switch_role *cp; 2928 struct hci_conn *conn; 2929 2930 BT_DBG("%s status 0x%2.2x", hdev->name, status); 2931 2932 if (!status) 2933 return; 2934 2935 cp = hci_sent_cmd_data(hdev, HCI_OP_SWITCH_ROLE); 2936 if (!cp) 2937 return; 2938 2939 hci_dev_lock(hdev); 2940 2941 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &cp->bdaddr); 2942 if (conn) 2943 clear_bit(HCI_CONN_RSWITCH_PEND, &conn->flags); 2944 2945 hci_dev_unlock(hdev); 2946 } 2947 2948 static void hci_inquiry_complete_evt(struct hci_dev *hdev, void *data, 2949 struct sk_buff *skb) 2950 { 2951 struct hci_ev_status *ev = data; 2952 struct discovery_state *discov = &hdev->discovery; 2953 struct inquiry_entry *e; 2954 2955 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 2956 2957 if (!test_and_clear_bit(HCI_INQUIRY, &hdev->flags)) 2958 return; 2959 2960 smp_mb__after_atomic(); /* wake_up_bit advises about this barrier */ 2961 wake_up_bit(&hdev->flags, HCI_INQUIRY); 2962 2963 if (!hci_dev_test_flag(hdev, HCI_MGMT)) 2964 return; 2965 2966 hci_dev_lock(hdev); 2967 2968 if (discov->state != DISCOVERY_FINDING) 2969 goto unlock; 2970 2971 if (list_empty(&discov->resolve)) { 2972 /* When BR/EDR inquiry is active and no LE scanning is in 2973 * progress, then change discovery state to indicate completion. 2974 * 2975 * When running LE scanning and BR/EDR inquiry simultaneously 2976 * and the LE scan already finished, then change the discovery 2977 * state to indicate completion. 2978 */ 2979 if (!hci_dev_test_flag(hdev, HCI_LE_SCAN) || 2980 !hci_test_quirk(hdev, HCI_QUIRK_SIMULTANEOUS_DISCOVERY)) 2981 hci_discovery_set_state(hdev, DISCOVERY_STOPPED); 2982 goto unlock; 2983 } 2984 2985 e = hci_inquiry_cache_lookup_resolve(hdev, BDADDR_ANY, NAME_NEEDED); 2986 if (e && hci_resolve_name(hdev, e) == 0) { 2987 e->name_state = NAME_PENDING; 2988 hci_discovery_set_state(hdev, DISCOVERY_RESOLVING); 2989 discov->name_resolve_timeout = jiffies + NAME_RESOLVE_DURATION; 2990 } else { 2991 /* When BR/EDR inquiry is active and no LE scanning is in 2992 * progress, then change discovery state to indicate completion. 2993 * 2994 * When running LE scanning and BR/EDR inquiry simultaneously 2995 * and the LE scan already finished, then change the discovery 2996 * state to indicate completion. 2997 */ 2998 if (!hci_dev_test_flag(hdev, HCI_LE_SCAN) || 2999 !hci_test_quirk(hdev, HCI_QUIRK_SIMULTANEOUS_DISCOVERY)) 3000 hci_discovery_set_state(hdev, DISCOVERY_STOPPED); 3001 } 3002 3003 unlock: 3004 hci_dev_unlock(hdev); 3005 } 3006 3007 static void hci_inquiry_result_evt(struct hci_dev *hdev, void *edata, 3008 struct sk_buff *skb) 3009 { 3010 struct hci_ev_inquiry_result *ev = edata; 3011 struct inquiry_data data; 3012 int i; 3013 3014 if (!hci_ev_skb_pull(hdev, skb, HCI_EV_INQUIRY_RESULT, 3015 flex_array_size(ev, info, ev->num))) 3016 return; 3017 3018 bt_dev_dbg(hdev, "num %d", ev->num); 3019 3020 if (!ev->num) 3021 return; 3022 3023 if (hci_dev_test_flag(hdev, HCI_PERIODIC_INQ)) 3024 return; 3025 3026 hci_dev_lock(hdev); 3027 3028 for (i = 0; i < ev->num; i++) { 3029 struct inquiry_info *info = &ev->info[i]; 3030 u32 flags; 3031 3032 bacpy(&data.bdaddr, &info->bdaddr); 3033 data.pscan_rep_mode = info->pscan_rep_mode; 3034 data.pscan_period_mode = info->pscan_period_mode; 3035 data.pscan_mode = info->pscan_mode; 3036 memcpy(data.dev_class, info->dev_class, 3); 3037 data.clock_offset = info->clock_offset; 3038 data.rssi = HCI_RSSI_INVALID; 3039 data.ssp_mode = 0x00; 3040 3041 flags = hci_inquiry_cache_update(hdev, &data, false); 3042 3043 mgmt_device_found(hdev, &info->bdaddr, ACL_LINK, 0x00, 3044 info->dev_class, HCI_RSSI_INVALID, 3045 flags, NULL, 0, NULL, 0, 0); 3046 } 3047 3048 hci_dev_unlock(hdev); 3049 } 3050 3051 static int hci_read_enc_key_size(struct hci_dev *hdev, struct hci_conn *conn) 3052 { 3053 struct hci_cp_read_enc_key_size cp; 3054 u8 *key_enc_size = hci_conn_key_enc_size(conn); 3055 3056 if (!read_key_size_capable(hdev)) { 3057 conn->enc_key_size = HCI_LINK_KEY_SIZE; 3058 return -EOPNOTSUPP; 3059 } 3060 3061 bt_dev_dbg(hdev, "hcon %p", conn); 3062 3063 memset(&cp, 0, sizeof(cp)); 3064 cp.handle = cpu_to_le16(conn->handle); 3065 3066 /* If the key enc_size is already known, use it as conn->enc_key_size, 3067 * otherwise use hdev->min_enc_key_size so the likes of 3068 * l2cap_check_enc_key_size don't fail while waiting for 3069 * HCI_OP_READ_ENC_KEY_SIZE response. 3070 */ 3071 if (key_enc_size && *key_enc_size) 3072 conn->enc_key_size = *key_enc_size; 3073 else 3074 conn->enc_key_size = hdev->min_enc_key_size; 3075 3076 return hci_send_cmd(hdev, HCI_OP_READ_ENC_KEY_SIZE, sizeof(cp), &cp); 3077 } 3078 3079 static void hci_conn_complete_evt(struct hci_dev *hdev, void *data, 3080 struct sk_buff *skb) 3081 { 3082 struct hci_ev_conn_complete *ev = data; 3083 struct hci_conn *conn; 3084 u8 status = ev->status; 3085 3086 bt_dev_dbg(hdev, "status 0x%2.2x", status); 3087 3088 hci_dev_lock(hdev); 3089 3090 /* Check for existing connection: 3091 * 3092 * 1. If it doesn't exist then it must be receiver/slave role. 3093 * 2. If it does exist confirm that it is connecting/BT_CONNECT in case 3094 * of initiator/master role since there could be a collision where 3095 * either side is attempting to connect or something like a fuzzing 3096 * testing is trying to play tricks to destroy the hcon object before 3097 * it even attempts to connect (e.g. hcon->state == BT_OPEN). 3098 */ 3099 conn = hci_conn_hash_lookup_ba(hdev, ev->link_type, &ev->bdaddr); 3100 if (!conn || 3101 (conn->role == HCI_ROLE_MASTER && conn->state != BT_CONNECT)) { 3102 /* In case of error status and there is no connection pending 3103 * just unlock as there is nothing to cleanup. 3104 */ 3105 if (ev->status) 3106 goto unlock; 3107 3108 /* Connection may not exist if auto-connected. Check the bredr 3109 * allowlist to see if this device is allowed to auto connect. 3110 * If link is an ACL type, create a connection class 3111 * automatically. 3112 * 3113 * Auto-connect will only occur if the event filter is 3114 * programmed with a given address. Right now, event filter is 3115 * only used during suspend. 3116 */ 3117 if (ev->link_type == ACL_LINK && 3118 hci_bdaddr_list_lookup_with_flags(&hdev->accept_list, 3119 &ev->bdaddr, 3120 BDADDR_BREDR)) { 3121 conn = hci_conn_add_unset(hdev, ev->link_type, 3122 &ev->bdaddr, HCI_ROLE_SLAVE); 3123 if (IS_ERR(conn)) { 3124 bt_dev_err(hdev, "connection err: %ld", PTR_ERR(conn)); 3125 goto unlock; 3126 } 3127 } else { 3128 if (ev->link_type != SCO_LINK) 3129 goto unlock; 3130 3131 conn = hci_conn_hash_lookup_ba(hdev, ESCO_LINK, 3132 &ev->bdaddr); 3133 if (!conn) 3134 goto unlock; 3135 3136 conn->type = SCO_LINK; 3137 } 3138 } 3139 3140 /* The HCI_Connection_Complete event is only sent once per connection. 3141 * Processing it more than once per connection can corrupt kernel memory. 3142 * 3143 * As the connection handle is set here for the first time, it indicates 3144 * whether the connection is already set up. 3145 */ 3146 if (!HCI_CONN_HANDLE_UNSET(conn->handle)) { 3147 bt_dev_err(hdev, "Ignoring HCI_Connection_Complete for existing connection"); 3148 goto unlock; 3149 } 3150 3151 if (!status) { 3152 status = hci_conn_set_handle(conn, __le16_to_cpu(ev->handle)); 3153 if (status) 3154 goto done; 3155 3156 if (conn->type == ACL_LINK) { 3157 conn->state = BT_CONFIG; 3158 hci_conn_hold(conn); 3159 3160 if (!conn->out && !hci_conn_ssp_enabled(conn) && 3161 !hci_find_link_key(hdev, &ev->bdaddr)) 3162 conn->disc_timeout = HCI_PAIRING_TIMEOUT; 3163 else 3164 conn->disc_timeout = HCI_DISCONN_TIMEOUT; 3165 } else 3166 conn->state = BT_CONNECTED; 3167 3168 hci_debugfs_create_conn(conn); 3169 hci_conn_add_sysfs(conn); 3170 3171 if (test_bit(HCI_AUTH, &hdev->flags)) 3172 set_bit(HCI_CONN_AUTH, &conn->flags); 3173 3174 if (test_bit(HCI_ENCRYPT, &hdev->flags)) 3175 set_bit(HCI_CONN_ENCRYPT, &conn->flags); 3176 3177 /* "Link key request" completed ahead of "connect request" completes */ 3178 if (ev->encr_mode == 1 && !test_bit(HCI_CONN_ENCRYPT, &conn->flags) && 3179 ev->link_type == ACL_LINK) { 3180 struct link_key *key; 3181 3182 key = hci_find_link_key(hdev, &ev->bdaddr); 3183 if (key) { 3184 set_bit(HCI_CONN_ENCRYPT, &conn->flags); 3185 hci_read_enc_key_size(hdev, conn); 3186 hci_encrypt_cfm(conn, ev->status); 3187 } 3188 } 3189 3190 /* Get remote features */ 3191 if (conn->type == ACL_LINK) { 3192 struct hci_cp_read_remote_features cp; 3193 cp.handle = ev->handle; 3194 hci_send_cmd(hdev, HCI_OP_READ_REMOTE_FEATURES, 3195 sizeof(cp), &cp); 3196 3197 hci_update_scan(hdev); 3198 } 3199 3200 /* Set packet type for incoming connection */ 3201 if (!conn->out && hdev->hci_ver < BLUETOOTH_VER_2_0) { 3202 struct hci_cp_change_conn_ptype cp; 3203 cp.handle = ev->handle; 3204 cp.pkt_type = cpu_to_le16(conn->pkt_type); 3205 hci_send_cmd(hdev, HCI_OP_CHANGE_CONN_PTYPE, sizeof(cp), 3206 &cp); 3207 } 3208 } 3209 3210 if (conn->type == ACL_LINK) 3211 hci_sco_setup(conn, ev->status); 3212 3213 done: 3214 if (status) { 3215 hci_conn_failed(conn, status); 3216 } else if (ev->link_type == SCO_LINK) { 3217 switch (conn->setting & SCO_AIRMODE_MASK) { 3218 case SCO_AIRMODE_CVSD: 3219 if (hdev->notify) 3220 hdev->notify(hdev, HCI_NOTIFY_ENABLE_SCO_CVSD); 3221 break; 3222 } 3223 3224 hci_connect_cfm(conn, status); 3225 } 3226 3227 unlock: 3228 hci_dev_unlock(hdev); 3229 } 3230 3231 static void hci_reject_conn(struct hci_dev *hdev, bdaddr_t *bdaddr) 3232 { 3233 struct hci_cp_reject_conn_req cp; 3234 3235 bacpy(&cp.bdaddr, bdaddr); 3236 cp.reason = HCI_ERROR_REJ_BAD_ADDR; 3237 hci_send_cmd(hdev, HCI_OP_REJECT_CONN_REQ, sizeof(cp), &cp); 3238 } 3239 3240 static void hci_conn_request_evt(struct hci_dev *hdev, void *data, 3241 struct sk_buff *skb) 3242 { 3243 struct hci_ev_conn_request *ev = data; 3244 int mask = hdev->link_mode; 3245 struct inquiry_entry *ie; 3246 struct hci_conn *conn; 3247 __u8 flags = 0; 3248 3249 bt_dev_dbg(hdev, "bdaddr %pMR type 0x%x", &ev->bdaddr, ev->link_type); 3250 3251 /* Reject incoming connection from device with same BD ADDR against 3252 * CVE-2020-26555 3253 */ 3254 if (hdev && !bacmp(&hdev->bdaddr, &ev->bdaddr)) { 3255 bt_dev_dbg(hdev, "Reject connection with same BD_ADDR %pMR\n", 3256 &ev->bdaddr); 3257 hci_reject_conn(hdev, &ev->bdaddr); 3258 return; 3259 } 3260 3261 mask |= hci_proto_connect_ind(hdev, &ev->bdaddr, ev->link_type, 3262 &flags); 3263 3264 if (!(mask & HCI_LM_ACCEPT)) { 3265 hci_reject_conn(hdev, &ev->bdaddr); 3266 return; 3267 } 3268 3269 hci_dev_lock(hdev); 3270 3271 if (hci_bdaddr_list_lookup(&hdev->reject_list, &ev->bdaddr, 3272 BDADDR_BREDR)) { 3273 hci_reject_conn(hdev, &ev->bdaddr); 3274 goto unlock; 3275 } 3276 3277 /* Require HCI_CONNECTABLE or an accept list entry to accept the 3278 * connection. These features are only touched through mgmt so 3279 * only do the checks if HCI_MGMT is set. 3280 */ 3281 if (hci_dev_test_flag(hdev, HCI_MGMT) && 3282 !hci_dev_test_flag(hdev, HCI_CONNECTABLE) && 3283 !hci_bdaddr_list_lookup_with_flags(&hdev->accept_list, &ev->bdaddr, 3284 BDADDR_BREDR)) { 3285 hci_reject_conn(hdev, &ev->bdaddr); 3286 goto unlock; 3287 } 3288 3289 /* Connection accepted */ 3290 3291 ie = hci_inquiry_cache_lookup(hdev, &ev->bdaddr); 3292 if (ie) 3293 memcpy(ie->data.dev_class, ev->dev_class, 3); 3294 3295 conn = hci_conn_hash_lookup_ba(hdev, ev->link_type, 3296 &ev->bdaddr); 3297 if (!conn) { 3298 conn = hci_conn_add_unset(hdev, ev->link_type, &ev->bdaddr, 3299 HCI_ROLE_SLAVE); 3300 if (IS_ERR(conn)) { 3301 bt_dev_err(hdev, "connection err: %ld", PTR_ERR(conn)); 3302 goto unlock; 3303 } 3304 } 3305 3306 memcpy(conn->dev_class, ev->dev_class, 3); 3307 3308 hci_dev_unlock(hdev); 3309 3310 if (ev->link_type == ACL_LINK || 3311 (!(flags & HCI_PROTO_DEFER) && !lmp_esco_capable(hdev))) { 3312 struct hci_cp_accept_conn_req cp; 3313 conn->state = BT_CONNECT; 3314 3315 bacpy(&cp.bdaddr, &ev->bdaddr); 3316 3317 if (lmp_rswitch_capable(hdev) && (mask & HCI_LM_MASTER)) 3318 cp.role = 0x00; /* Become central */ 3319 else 3320 cp.role = 0x01; /* Remain peripheral */ 3321 3322 hci_send_cmd(hdev, HCI_OP_ACCEPT_CONN_REQ, sizeof(cp), &cp); 3323 } else if (!(flags & HCI_PROTO_DEFER)) { 3324 struct hci_cp_accept_sync_conn_req cp; 3325 conn->state = BT_CONNECT; 3326 3327 bacpy(&cp.bdaddr, &ev->bdaddr); 3328 cp.pkt_type = cpu_to_le16(conn->pkt_type); 3329 3330 cp.tx_bandwidth = cpu_to_le32(0x00001f40); 3331 cp.rx_bandwidth = cpu_to_le32(0x00001f40); 3332 cp.max_latency = cpu_to_le16(0xffff); 3333 cp.content_format = cpu_to_le16(hdev->voice_setting); 3334 cp.retrans_effort = 0xff; 3335 3336 hci_send_cmd(hdev, HCI_OP_ACCEPT_SYNC_CONN_REQ, sizeof(cp), 3337 &cp); 3338 } else { 3339 conn->state = BT_CONNECT2; 3340 hci_connect_cfm(conn, 0); 3341 } 3342 3343 return; 3344 unlock: 3345 hci_dev_unlock(hdev); 3346 } 3347 3348 static u8 hci_to_mgmt_reason(u8 err) 3349 { 3350 switch (err) { 3351 case HCI_ERROR_CONNECTION_TIMEOUT: 3352 return MGMT_DEV_DISCONN_TIMEOUT; 3353 case HCI_ERROR_REMOTE_USER_TERM: 3354 case HCI_ERROR_REMOTE_LOW_RESOURCES: 3355 case HCI_ERROR_REMOTE_POWER_OFF: 3356 return MGMT_DEV_DISCONN_REMOTE; 3357 case HCI_ERROR_LOCAL_HOST_TERM: 3358 return MGMT_DEV_DISCONN_LOCAL_HOST; 3359 default: 3360 return MGMT_DEV_DISCONN_UNKNOWN; 3361 } 3362 } 3363 3364 static void hci_disconn_complete_evt(struct hci_dev *hdev, void *data, 3365 struct sk_buff *skb) 3366 { 3367 struct hci_ev_disconn_complete *ev = data; 3368 u8 reason; 3369 struct hci_conn_params *params; 3370 struct hci_conn *conn; 3371 bool mgmt_connected; 3372 3373 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 3374 3375 hci_dev_lock(hdev); 3376 3377 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle)); 3378 if (!conn) 3379 goto unlock; 3380 3381 if (ev->status) { 3382 mgmt_disconnect_failed(hdev, &conn->dst, conn->type, 3383 conn->dst_type, ev->status); 3384 goto unlock; 3385 } 3386 3387 conn->state = BT_CLOSED; 3388 3389 mgmt_connected = test_and_clear_bit(HCI_CONN_MGMT_CONNECTED, &conn->flags); 3390 3391 if (test_bit(HCI_CONN_AUTH_FAILURE, &conn->flags)) 3392 reason = MGMT_DEV_DISCONN_AUTH_FAILURE; 3393 else 3394 reason = hci_to_mgmt_reason(ev->reason); 3395 3396 mgmt_device_disconnected(hdev, &conn->dst, conn->type, conn->dst_type, 3397 reason, mgmt_connected); 3398 3399 if (conn->type == ACL_LINK) { 3400 if (test_and_clear_bit(HCI_CONN_FLUSH_KEY, &conn->flags)) 3401 hci_remove_link_key(hdev, &conn->dst); 3402 3403 hci_update_scan(hdev); 3404 } 3405 3406 /* Re-enable passive scanning if disconnected device is marked 3407 * as auto-connectable. 3408 */ 3409 if (conn->type == LE_LINK) { 3410 params = hci_conn_params_lookup(hdev, &conn->dst, 3411 conn->dst_type); 3412 if (params) { 3413 switch (params->auto_connect) { 3414 case HCI_AUTO_CONN_LINK_LOSS: 3415 if (ev->reason != HCI_ERROR_CONNECTION_TIMEOUT) 3416 break; 3417 fallthrough; 3418 3419 case HCI_AUTO_CONN_DIRECT: 3420 case HCI_AUTO_CONN_ALWAYS: 3421 hci_pend_le_list_del_init(params); 3422 hci_pend_le_list_add(params, 3423 &hdev->pend_le_conns); 3424 hci_update_passive_scan(hdev); 3425 break; 3426 3427 default: 3428 break; 3429 } 3430 } 3431 } 3432 3433 hci_disconn_cfm(conn, ev->reason); 3434 3435 /* Re-enable advertising if necessary, since it might 3436 * have been disabled by the connection. From the 3437 * HCI_LE_Set_Advertise_Enable command description in 3438 * the core specification (v4.0): 3439 * "The Controller shall continue advertising until the Host 3440 * issues an LE_Set_Advertise_Enable command with 3441 * Advertising_Enable set to 0x00 (Advertising is disabled) 3442 * or until a connection is created or until the Advertising 3443 * is timed out due to Directed Advertising." 3444 */ 3445 if (conn->type == LE_LINK && conn->role == HCI_ROLE_SLAVE) { 3446 hdev->cur_adv_instance = conn->adv_instance; 3447 hci_enable_advertising(hdev); 3448 } 3449 3450 hci_conn_del(conn); 3451 3452 unlock: 3453 hci_dev_unlock(hdev); 3454 } 3455 3456 static void hci_auth_complete_evt(struct hci_dev *hdev, void *data, 3457 struct sk_buff *skb) 3458 { 3459 struct hci_ev_auth_complete *ev = data; 3460 struct hci_conn *conn; 3461 3462 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 3463 3464 hci_dev_lock(hdev); 3465 3466 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle)); 3467 if (!conn) 3468 goto unlock; 3469 3470 if (!ev->status) { 3471 clear_bit(HCI_CONN_AUTH_FAILURE, &conn->flags); 3472 set_bit(HCI_CONN_AUTH, &conn->flags); 3473 conn->sec_level = conn->pending_sec_level; 3474 } else { 3475 if (ev->status == HCI_ERROR_PIN_OR_KEY_MISSING) 3476 set_bit(HCI_CONN_AUTH_FAILURE, &conn->flags); 3477 3478 mgmt_auth_failed(conn, ev->status); 3479 } 3480 3481 clear_bit(HCI_CONN_AUTH_PEND, &conn->flags); 3482 3483 if (conn->state == BT_CONFIG) { 3484 if (!ev->status && hci_conn_ssp_enabled(conn)) { 3485 struct hci_cp_set_conn_encrypt cp; 3486 cp.handle = ev->handle; 3487 cp.encrypt = 0x01; 3488 hci_send_cmd(hdev, HCI_OP_SET_CONN_ENCRYPT, sizeof(cp), 3489 &cp); 3490 } else { 3491 conn->state = BT_CONNECTED; 3492 hci_connect_cfm(conn, ev->status); 3493 hci_conn_drop(conn); 3494 } 3495 } else { 3496 hci_auth_cfm(conn, ev->status); 3497 3498 hci_conn_hold(conn); 3499 conn->disc_timeout = HCI_DISCONN_TIMEOUT; 3500 hci_conn_drop(conn); 3501 } 3502 3503 if (test_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags)) { 3504 if (!ev->status) { 3505 struct hci_cp_set_conn_encrypt cp; 3506 cp.handle = ev->handle; 3507 cp.encrypt = 0x01; 3508 hci_send_cmd(hdev, HCI_OP_SET_CONN_ENCRYPT, sizeof(cp), 3509 &cp); 3510 } else { 3511 clear_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags); 3512 hci_encrypt_cfm(conn, ev->status); 3513 } 3514 } 3515 3516 unlock: 3517 hci_dev_unlock(hdev); 3518 } 3519 3520 static void hci_remote_name_evt(struct hci_dev *hdev, void *data, 3521 struct sk_buff *skb) 3522 { 3523 struct hci_ev_remote_name *ev = data; 3524 struct hci_conn *conn; 3525 3526 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 3527 3528 hci_dev_lock(hdev); 3529 3530 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr); 3531 3532 if (!hci_dev_test_flag(hdev, HCI_MGMT)) 3533 goto check_auth; 3534 3535 if (ev->status == 0) 3536 hci_check_pending_name(hdev, conn, &ev->bdaddr, ev->name, 3537 strnlen(ev->name, HCI_MAX_NAME_LENGTH)); 3538 else 3539 hci_check_pending_name(hdev, conn, &ev->bdaddr, NULL, 0); 3540 3541 check_auth: 3542 if (!conn) 3543 goto unlock; 3544 3545 if (!hci_outgoing_auth_needed(hdev, conn)) 3546 goto unlock; 3547 3548 if (!test_and_set_bit(HCI_CONN_AUTH_PEND, &conn->flags)) { 3549 struct hci_cp_auth_requested cp; 3550 3551 set_bit(HCI_CONN_AUTH_INITIATOR, &conn->flags); 3552 3553 cp.handle = __cpu_to_le16(conn->handle); 3554 hci_send_cmd(hdev, HCI_OP_AUTH_REQUESTED, sizeof(cp), &cp); 3555 } 3556 3557 unlock: 3558 hci_dev_unlock(hdev); 3559 } 3560 3561 static void hci_encrypt_change_evt(struct hci_dev *hdev, void *data, 3562 struct sk_buff *skb) 3563 { 3564 struct hci_ev_encrypt_change *ev = data; 3565 struct hci_conn *conn; 3566 3567 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 3568 3569 hci_dev_lock(hdev); 3570 3571 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle)); 3572 if (!conn) 3573 goto unlock; 3574 3575 if (!ev->status) { 3576 if (ev->encrypt) { 3577 /* Encryption implies authentication */ 3578 set_bit(HCI_CONN_AUTH, &conn->flags); 3579 set_bit(HCI_CONN_ENCRYPT, &conn->flags); 3580 conn->sec_level = conn->pending_sec_level; 3581 3582 /* P-256 authentication key implies FIPS */ 3583 if (conn->key_type == HCI_LK_AUTH_COMBINATION_P256) 3584 set_bit(HCI_CONN_FIPS, &conn->flags); 3585 3586 if ((conn->type == ACL_LINK && ev->encrypt == 0x02) || 3587 conn->type == LE_LINK) 3588 set_bit(HCI_CONN_AES_CCM, &conn->flags); 3589 } else { 3590 clear_bit(HCI_CONN_ENCRYPT, &conn->flags); 3591 clear_bit(HCI_CONN_AES_CCM, &conn->flags); 3592 } 3593 } 3594 3595 /* We should disregard the current RPA and generate a new one 3596 * whenever the encryption procedure fails. 3597 */ 3598 if (ev->status && conn->type == LE_LINK) { 3599 hci_dev_set_flag(hdev, HCI_RPA_EXPIRED); 3600 hci_adv_instances_set_rpa_expired(hdev, true); 3601 } 3602 3603 clear_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags); 3604 3605 /* Check link security requirements are met */ 3606 if (!hci_conn_check_link_mode(conn)) 3607 ev->status = HCI_ERROR_AUTH_FAILURE; 3608 3609 if (ev->status && conn->state == BT_CONNECTED) { 3610 if (ev->status == HCI_ERROR_PIN_OR_KEY_MISSING) 3611 set_bit(HCI_CONN_AUTH_FAILURE, &conn->flags); 3612 3613 /* Notify upper layers so they can cleanup before 3614 * disconnecting. 3615 */ 3616 hci_encrypt_cfm(conn, ev->status); 3617 hci_disconnect(conn, HCI_ERROR_AUTH_FAILURE); 3618 hci_conn_drop(conn); 3619 goto unlock; 3620 } 3621 3622 /* Try reading the encryption key size for encrypted ACL links */ 3623 if (!ev->status && ev->encrypt && conn->type == ACL_LINK) { 3624 if (hci_read_enc_key_size(hdev, conn)) 3625 goto notify; 3626 3627 goto unlock; 3628 } 3629 3630 /* We skip the WRITE_AUTH_PAYLOAD_TIMEOUT for ATS2851 based controllers 3631 * to avoid unexpected SMP command errors when pairing. 3632 */ 3633 if (hci_test_quirk(hdev, HCI_QUIRK_BROKEN_WRITE_AUTH_PAYLOAD_TIMEOUT)) 3634 goto notify; 3635 3636 /* Set the default Authenticated Payload Timeout after 3637 * an LE Link is established. As per Core Spec v5.0, Vol 2, Part B 3638 * Section 3.3, the HCI command WRITE_AUTH_PAYLOAD_TIMEOUT should be 3639 * sent when the link is active and Encryption is enabled, the conn 3640 * type can be either LE or ACL and controller must support LMP Ping. 3641 * Ensure for AES-CCM encryption as well. 3642 */ 3643 if (test_bit(HCI_CONN_ENCRYPT, &conn->flags) && 3644 test_bit(HCI_CONN_AES_CCM, &conn->flags) && 3645 ((conn->type == ACL_LINK && lmp_ping_capable(hdev)) || 3646 (conn->type == LE_LINK && (hdev->le_features[0] & HCI_LE_PING)))) { 3647 struct hci_cp_write_auth_payload_to cp; 3648 3649 cp.handle = cpu_to_le16(conn->handle); 3650 cp.timeout = cpu_to_le16(hdev->auth_payload_timeout); 3651 if (hci_send_cmd(conn->hdev, HCI_OP_WRITE_AUTH_PAYLOAD_TO, 3652 sizeof(cp), &cp)) 3653 bt_dev_err(hdev, "write auth payload timeout failed"); 3654 } 3655 3656 notify: 3657 hci_encrypt_cfm(conn, ev->status); 3658 3659 unlock: 3660 hci_dev_unlock(hdev); 3661 } 3662 3663 static void hci_change_link_key_complete_evt(struct hci_dev *hdev, void *data, 3664 struct sk_buff *skb) 3665 { 3666 struct hci_ev_change_link_key_complete *ev = data; 3667 struct hci_conn *conn; 3668 3669 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 3670 3671 hci_dev_lock(hdev); 3672 3673 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle)); 3674 if (conn) { 3675 if (!ev->status) 3676 set_bit(HCI_CONN_SECURE, &conn->flags); 3677 3678 clear_bit(HCI_CONN_AUTH_PEND, &conn->flags); 3679 3680 hci_key_change_cfm(conn, ev->status); 3681 } 3682 3683 hci_dev_unlock(hdev); 3684 } 3685 3686 static void hci_remote_features_evt(struct hci_dev *hdev, void *data, 3687 struct sk_buff *skb) 3688 { 3689 struct hci_ev_remote_features *ev = data; 3690 struct hci_conn *conn; 3691 3692 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 3693 3694 hci_dev_lock(hdev); 3695 3696 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle)); 3697 if (!conn) 3698 goto unlock; 3699 3700 if (!ev->status) 3701 memcpy(conn->features[0], ev->features, 8); 3702 3703 if (conn->state != BT_CONFIG) 3704 goto unlock; 3705 3706 if (!ev->status && lmp_ext_feat_capable(hdev) && 3707 lmp_ext_feat_capable(conn)) { 3708 struct hci_cp_read_remote_ext_features cp; 3709 cp.handle = ev->handle; 3710 cp.page = 0x01; 3711 hci_send_cmd(hdev, HCI_OP_READ_REMOTE_EXT_FEATURES, 3712 sizeof(cp), &cp); 3713 goto unlock; 3714 } 3715 3716 if (!ev->status) { 3717 struct hci_cp_remote_name_req cp; 3718 memset(&cp, 0, sizeof(cp)); 3719 bacpy(&cp.bdaddr, &conn->dst); 3720 cp.pscan_rep_mode = 0x02; 3721 hci_send_cmd(hdev, HCI_OP_REMOTE_NAME_REQ, sizeof(cp), &cp); 3722 } else { 3723 mgmt_device_connected(hdev, conn, NULL, 0); 3724 } 3725 3726 if (!hci_outgoing_auth_needed(hdev, conn)) { 3727 conn->state = BT_CONNECTED; 3728 hci_connect_cfm(conn, ev->status); 3729 hci_conn_drop(conn); 3730 } 3731 3732 unlock: 3733 hci_dev_unlock(hdev); 3734 } 3735 3736 static inline void handle_cmd_cnt_and_timer(struct hci_dev *hdev, u8 ncmd) 3737 { 3738 cancel_delayed_work(&hdev->cmd_timer); 3739 3740 rcu_read_lock(); 3741 if (!test_bit(HCI_RESET, &hdev->flags)) { 3742 if (ncmd) { 3743 cancel_delayed_work(&hdev->ncmd_timer); 3744 atomic_set(&hdev->cmd_cnt, 1); 3745 } else { 3746 if (!hci_dev_test_flag(hdev, HCI_CMD_DRAIN_WORKQUEUE)) 3747 queue_delayed_work(hdev->workqueue, &hdev->ncmd_timer, 3748 HCI_NCMD_TIMEOUT); 3749 } 3750 } 3751 rcu_read_unlock(); 3752 } 3753 3754 static u8 hci_cc_le_read_buffer_size_v2(struct hci_dev *hdev, void *data, 3755 struct sk_buff *skb) 3756 { 3757 struct hci_rp_le_read_buffer_size_v2 *rp = data; 3758 3759 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 3760 3761 if (rp->status) 3762 return rp->status; 3763 3764 hdev->le_mtu = __le16_to_cpu(rp->acl_mtu); 3765 hdev->le_pkts = rp->acl_max_pkt; 3766 hdev->iso_mtu = __le16_to_cpu(rp->iso_mtu); 3767 hdev->iso_pkts = rp->iso_max_pkt; 3768 3769 hdev->le_cnt = hdev->le_pkts; 3770 hdev->iso_cnt = hdev->iso_pkts; 3771 3772 BT_DBG("%s acl mtu %d:%d iso mtu %d:%d", hdev->name, hdev->acl_mtu, 3773 hdev->acl_pkts, hdev->iso_mtu, hdev->iso_pkts); 3774 3775 if (hdev->le_mtu && hdev->le_mtu < HCI_MIN_LE_MTU) 3776 return HCI_ERROR_INVALID_PARAMETERS; 3777 3778 return rp->status; 3779 } 3780 3781 static void hci_unbound_cis_failed(struct hci_dev *hdev, u8 cig, u8 status) 3782 { 3783 struct hci_conn *conn, *tmp; 3784 3785 lockdep_assert_held(&hdev->lock); 3786 3787 list_for_each_entry_safe(conn, tmp, &hdev->conn_hash.list, list) { 3788 if (conn->type != CIS_LINK || 3789 conn->state == BT_OPEN || conn->iso_qos.ucast.cig != cig) 3790 continue; 3791 3792 if (HCI_CONN_HANDLE_UNSET(conn->handle)) 3793 hci_conn_failed(conn, status); 3794 } 3795 } 3796 3797 static u8 hci_cc_le_set_cig_params(struct hci_dev *hdev, void *data, 3798 struct sk_buff *skb) 3799 { 3800 struct hci_rp_le_set_cig_params *rp = data; 3801 struct hci_cp_le_set_cig_params *cp; 3802 struct hci_conn *conn; 3803 u8 status = rp->status; 3804 bool pending = false; 3805 int i; 3806 3807 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 3808 3809 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_CIG_PARAMS); 3810 if (!rp->status && (!cp || rp->num_handles != cp->num_cis || 3811 rp->cig_id != cp->cig_id)) { 3812 bt_dev_err(hdev, "unexpected Set CIG Parameters response data"); 3813 status = HCI_ERROR_UNSPECIFIED; 3814 } 3815 3816 hci_dev_lock(hdev); 3817 3818 /* BLUETOOTH CORE SPECIFICATION Version 5.4 | Vol 4, Part E page 2554 3819 * 3820 * If the Status return parameter is non-zero, then the state of the CIG 3821 * and its CIS configurations shall not be changed by the command. If 3822 * the CIG did not already exist, it shall not be created. 3823 */ 3824 if (status) { 3825 /* Keep current configuration, fail only the unbound CIS */ 3826 hci_unbound_cis_failed(hdev, rp->cig_id, status); 3827 goto unlock; 3828 } 3829 3830 /* BLUETOOTH CORE SPECIFICATION Version 5.3 | Vol 4, Part E page 2553 3831 * 3832 * If the Status return parameter is zero, then the Controller shall 3833 * set the Connection_Handle arrayed return parameter to the connection 3834 * handle(s) corresponding to the CIS configurations specified in 3835 * the CIS_IDs command parameter, in the same order. 3836 */ 3837 for (i = 0; i < rp->num_handles; ++i) { 3838 conn = hci_conn_hash_lookup_cis(hdev, NULL, 0, rp->cig_id, 3839 cp->cis[i].cis_id); 3840 if (!conn || !bacmp(&conn->dst, BDADDR_ANY)) 3841 continue; 3842 3843 if (conn->state != BT_BOUND && conn->state != BT_CONNECT) 3844 continue; 3845 3846 if (hci_conn_set_handle(conn, __le16_to_cpu(rp->handle[i]))) 3847 continue; 3848 3849 if (conn->state == BT_CONNECT) 3850 pending = true; 3851 } 3852 3853 unlock: 3854 if (pending) 3855 hci_le_create_cis_pending(hdev); 3856 3857 hci_dev_unlock(hdev); 3858 3859 return rp->status; 3860 } 3861 3862 static u8 hci_cc_le_setup_iso_path(struct hci_dev *hdev, void *data, 3863 struct sk_buff *skb) 3864 { 3865 struct hci_rp_le_setup_iso_path *rp = data; 3866 struct hci_cp_le_setup_iso_path *cp; 3867 struct hci_conn *conn; 3868 3869 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 3870 3871 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SETUP_ISO_PATH); 3872 if (!cp) 3873 return rp->status; 3874 3875 hci_dev_lock(hdev); 3876 3877 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle)); 3878 if (!conn) 3879 goto unlock; 3880 3881 if (rp->status) { 3882 hci_connect_cfm(conn, rp->status); 3883 hci_conn_del(conn); 3884 goto unlock; 3885 } 3886 3887 switch (cp->direction) { 3888 /* Input (Host to Controller) */ 3889 case 0x00: 3890 /* Only confirm connection if output only */ 3891 if (conn->iso_qos.ucast.out.sdu && !conn->iso_qos.ucast.in.sdu) 3892 hci_connect_cfm(conn, rp->status); 3893 break; 3894 /* Output (Controller to Host) */ 3895 case 0x01: 3896 /* Confirm connection since conn->iso_qos is always configured 3897 * last. 3898 */ 3899 hci_connect_cfm(conn, rp->status); 3900 3901 /* Notify device connected in case it is a BIG Sync */ 3902 if (!rp->status && test_bit(HCI_CONN_BIG_SYNC, &conn->flags)) 3903 mgmt_device_connected(hdev, conn, NULL, 0); 3904 3905 break; 3906 } 3907 3908 unlock: 3909 hci_dev_unlock(hdev); 3910 return rp->status; 3911 } 3912 3913 static void hci_cs_le_create_big(struct hci_dev *hdev, u8 status) 3914 { 3915 bt_dev_dbg(hdev, "status 0x%2.2x", status); 3916 } 3917 3918 static u8 hci_cc_set_per_adv_param(struct hci_dev *hdev, void *data, 3919 struct sk_buff *skb) 3920 { 3921 struct hci_ev_status *rp = data; 3922 struct hci_cp_le_set_per_adv_params *cp; 3923 3924 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 3925 3926 if (rp->status) 3927 return rp->status; 3928 3929 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_PER_ADV_PARAMS); 3930 if (!cp) 3931 return rp->status; 3932 3933 /* TODO: set the conn state */ 3934 return rp->status; 3935 } 3936 3937 static u8 hci_cc_le_set_per_adv_enable(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_enable *cp; 3942 struct adv_info *adv = NULL, *n; 3943 u8 per_adv_cnt = 0; 3944 3945 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 3946 3947 if (rp->status) 3948 return rp->status; 3949 3950 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_PER_ADV_ENABLE); 3951 if (!cp) 3952 return rp->status; 3953 3954 hci_dev_lock(hdev); 3955 3956 adv = hci_find_adv_instance(hdev, cp->handle); 3957 3958 if (cp->enable) { 3959 hci_dev_set_flag(hdev, HCI_LE_PER_ADV); 3960 3961 if (adv) 3962 adv->enabled = true; 3963 } else { 3964 /* If just one instance was disabled check if there are 3965 * any other instance enabled before clearing HCI_LE_PER_ADV. 3966 * The current periodic adv instance will be marked as 3967 * disabled once extended advertising is also disabled. 3968 */ 3969 list_for_each_entry_safe(adv, n, &hdev->adv_instances, 3970 list) { 3971 if (adv->periodic && adv->enabled) 3972 per_adv_cnt++; 3973 } 3974 3975 if (per_adv_cnt > 1) 3976 goto unlock; 3977 3978 hci_dev_clear_flag(hdev, HCI_LE_PER_ADV); 3979 } 3980 3981 unlock: 3982 hci_dev_unlock(hdev); 3983 3984 return rp->status; 3985 } 3986 3987 #define HCI_CC_VL(_op, _func, _min, _max) \ 3988 { \ 3989 .op = _op, \ 3990 .func = _func, \ 3991 .min_len = _min, \ 3992 .max_len = _max, \ 3993 } 3994 3995 #define HCI_CC(_op, _func, _len) \ 3996 HCI_CC_VL(_op, _func, _len, _len) 3997 3998 #define HCI_CC_STATUS(_op, _func) \ 3999 HCI_CC(_op, _func, sizeof(struct hci_ev_status)) 4000 4001 static const struct hci_cc { 4002 u16 op; 4003 u8 (*func)(struct hci_dev *hdev, void *data, struct sk_buff *skb); 4004 u16 min_len; 4005 u16 max_len; 4006 } hci_cc_table[] = { 4007 HCI_CC_STATUS(HCI_OP_INQUIRY_CANCEL, hci_cc_inquiry_cancel), 4008 HCI_CC_STATUS(HCI_OP_PERIODIC_INQ, hci_cc_periodic_inq), 4009 HCI_CC_STATUS(HCI_OP_EXIT_PERIODIC_INQ, hci_cc_exit_periodic_inq), 4010 HCI_CC(HCI_OP_REMOTE_NAME_REQ_CANCEL, hci_cc_remote_name_req_cancel, 4011 sizeof(struct hci_rp_remote_name_req_cancel)), 4012 HCI_CC(HCI_OP_ROLE_DISCOVERY, hci_cc_role_discovery, 4013 sizeof(struct hci_rp_role_discovery)), 4014 HCI_CC(HCI_OP_READ_LINK_POLICY, hci_cc_read_link_policy, 4015 sizeof(struct hci_rp_read_link_policy)), 4016 HCI_CC(HCI_OP_WRITE_LINK_POLICY, hci_cc_write_link_policy, 4017 sizeof(struct hci_rp_write_link_policy)), 4018 HCI_CC(HCI_OP_READ_DEF_LINK_POLICY, hci_cc_read_def_link_policy, 4019 sizeof(struct hci_rp_read_def_link_policy)), 4020 HCI_CC_STATUS(HCI_OP_WRITE_DEF_LINK_POLICY, 4021 hci_cc_write_def_link_policy), 4022 HCI_CC_STATUS(HCI_OP_RESET, hci_cc_reset), 4023 HCI_CC(HCI_OP_READ_STORED_LINK_KEY, hci_cc_read_stored_link_key, 4024 sizeof(struct hci_rp_read_stored_link_key)), 4025 HCI_CC(HCI_OP_DELETE_STORED_LINK_KEY, hci_cc_delete_stored_link_key, 4026 sizeof(struct hci_rp_delete_stored_link_key)), 4027 HCI_CC_STATUS(HCI_OP_WRITE_LOCAL_NAME, hci_cc_write_local_name), 4028 HCI_CC(HCI_OP_READ_LOCAL_NAME, hci_cc_read_local_name, 4029 sizeof(struct hci_rp_read_local_name)), 4030 HCI_CC_STATUS(HCI_OP_WRITE_AUTH_ENABLE, hci_cc_write_auth_enable), 4031 HCI_CC_STATUS(HCI_OP_WRITE_ENCRYPT_MODE, hci_cc_write_encrypt_mode), 4032 HCI_CC_STATUS(HCI_OP_WRITE_SCAN_ENABLE, hci_cc_write_scan_enable), 4033 HCI_CC_STATUS(HCI_OP_SET_EVENT_FLT, hci_cc_set_event_filter), 4034 HCI_CC(HCI_OP_READ_CLASS_OF_DEV, hci_cc_read_class_of_dev, 4035 sizeof(struct hci_rp_read_class_of_dev)), 4036 HCI_CC_STATUS(HCI_OP_WRITE_CLASS_OF_DEV, hci_cc_write_class_of_dev), 4037 HCI_CC(HCI_OP_READ_VOICE_SETTING, hci_cc_read_voice_setting, 4038 sizeof(struct hci_rp_read_voice_setting)), 4039 HCI_CC_STATUS(HCI_OP_WRITE_VOICE_SETTING, hci_cc_write_voice_setting), 4040 HCI_CC(HCI_OP_READ_NUM_SUPPORTED_IAC, hci_cc_read_num_supported_iac, 4041 sizeof(struct hci_rp_read_num_supported_iac)), 4042 HCI_CC_STATUS(HCI_OP_WRITE_SSP_MODE, hci_cc_write_ssp_mode), 4043 HCI_CC_STATUS(HCI_OP_WRITE_SC_SUPPORT, hci_cc_write_sc_support), 4044 HCI_CC(HCI_OP_READ_AUTH_PAYLOAD_TO, hci_cc_read_auth_payload_timeout, 4045 sizeof(struct hci_rp_read_auth_payload_to)), 4046 HCI_CC(HCI_OP_WRITE_AUTH_PAYLOAD_TO, hci_cc_write_auth_payload_timeout, 4047 sizeof(struct hci_rp_write_auth_payload_to)), 4048 HCI_CC(HCI_OP_READ_LOCAL_VERSION, hci_cc_read_local_version, 4049 sizeof(struct hci_rp_read_local_version)), 4050 HCI_CC(HCI_OP_READ_LOCAL_COMMANDS, hci_cc_read_local_commands, 4051 sizeof(struct hci_rp_read_local_commands)), 4052 HCI_CC(HCI_OP_READ_LOCAL_FEATURES, hci_cc_read_local_features, 4053 sizeof(struct hci_rp_read_local_features)), 4054 HCI_CC(HCI_OP_READ_LOCAL_EXT_FEATURES, hci_cc_read_local_ext_features, 4055 sizeof(struct hci_rp_read_local_ext_features)), 4056 HCI_CC(HCI_OP_READ_BUFFER_SIZE, hci_cc_read_buffer_size, 4057 sizeof(struct hci_rp_read_buffer_size)), 4058 HCI_CC(HCI_OP_READ_BD_ADDR, hci_cc_read_bd_addr, 4059 sizeof(struct hci_rp_read_bd_addr)), 4060 HCI_CC(HCI_OP_READ_LOCAL_PAIRING_OPTS, hci_cc_read_local_pairing_opts, 4061 sizeof(struct hci_rp_read_local_pairing_opts)), 4062 HCI_CC(HCI_OP_READ_PAGE_SCAN_ACTIVITY, hci_cc_read_page_scan_activity, 4063 sizeof(struct hci_rp_read_page_scan_activity)), 4064 HCI_CC_STATUS(HCI_OP_WRITE_PAGE_SCAN_ACTIVITY, 4065 hci_cc_write_page_scan_activity), 4066 HCI_CC(HCI_OP_READ_PAGE_SCAN_TYPE, hci_cc_read_page_scan_type, 4067 sizeof(struct hci_rp_read_page_scan_type)), 4068 HCI_CC_STATUS(HCI_OP_WRITE_PAGE_SCAN_TYPE, hci_cc_write_page_scan_type), 4069 HCI_CC(HCI_OP_READ_CLOCK, hci_cc_read_clock, 4070 sizeof(struct hci_rp_read_clock)), 4071 HCI_CC(HCI_OP_READ_ENC_KEY_SIZE, hci_cc_read_enc_key_size, 4072 sizeof(struct hci_rp_read_enc_key_size)), 4073 HCI_CC(HCI_OP_READ_INQ_RSP_TX_POWER, hci_cc_read_inq_rsp_tx_power, 4074 sizeof(struct hci_rp_read_inq_rsp_tx_power)), 4075 HCI_CC(HCI_OP_READ_DEF_ERR_DATA_REPORTING, 4076 hci_cc_read_def_err_data_reporting, 4077 sizeof(struct hci_rp_read_def_err_data_reporting)), 4078 HCI_CC_STATUS(HCI_OP_WRITE_DEF_ERR_DATA_REPORTING, 4079 hci_cc_write_def_err_data_reporting), 4080 HCI_CC(HCI_OP_PIN_CODE_REPLY, hci_cc_pin_code_reply, 4081 sizeof(struct hci_rp_pin_code_reply)), 4082 HCI_CC(HCI_OP_PIN_CODE_NEG_REPLY, hci_cc_pin_code_neg_reply, 4083 sizeof(struct hci_rp_pin_code_neg_reply)), 4084 HCI_CC(HCI_OP_READ_LOCAL_OOB_DATA, hci_cc_read_local_oob_data, 4085 sizeof(struct hci_rp_read_local_oob_data)), 4086 HCI_CC(HCI_OP_READ_LOCAL_OOB_EXT_DATA, hci_cc_read_local_oob_ext_data, 4087 sizeof(struct hci_rp_read_local_oob_ext_data)), 4088 HCI_CC(HCI_OP_LE_READ_BUFFER_SIZE, hci_cc_le_read_buffer_size, 4089 sizeof(struct hci_rp_le_read_buffer_size)), 4090 HCI_CC(HCI_OP_LE_READ_LOCAL_FEATURES, hci_cc_le_read_local_features, 4091 sizeof(struct hci_rp_le_read_local_features)), 4092 HCI_CC(HCI_OP_LE_READ_ADV_TX_POWER, hci_cc_le_read_adv_tx_power, 4093 sizeof(struct hci_rp_le_read_adv_tx_power)), 4094 HCI_CC(HCI_OP_USER_CONFIRM_REPLY, hci_cc_user_confirm_reply, 4095 sizeof(struct hci_rp_user_confirm_reply)), 4096 HCI_CC(HCI_OP_USER_CONFIRM_NEG_REPLY, hci_cc_user_confirm_neg_reply, 4097 sizeof(struct hci_rp_user_confirm_reply)), 4098 HCI_CC(HCI_OP_USER_PASSKEY_REPLY, hci_cc_user_passkey_reply, 4099 sizeof(struct hci_rp_user_confirm_reply)), 4100 HCI_CC(HCI_OP_USER_PASSKEY_NEG_REPLY, hci_cc_user_passkey_neg_reply, 4101 sizeof(struct hci_rp_user_confirm_reply)), 4102 HCI_CC_STATUS(HCI_OP_LE_SET_RANDOM_ADDR, hci_cc_le_set_random_addr), 4103 HCI_CC_STATUS(HCI_OP_LE_SET_ADV_ENABLE, hci_cc_le_set_adv_enable), 4104 HCI_CC_STATUS(HCI_OP_LE_SET_SCAN_PARAM, hci_cc_le_set_scan_param), 4105 HCI_CC_STATUS(HCI_OP_LE_SET_SCAN_ENABLE, hci_cc_le_set_scan_enable), 4106 HCI_CC(HCI_OP_LE_READ_ACCEPT_LIST_SIZE, 4107 hci_cc_le_read_accept_list_size, 4108 sizeof(struct hci_rp_le_read_accept_list_size)), 4109 HCI_CC_STATUS(HCI_OP_LE_CLEAR_ACCEPT_LIST, hci_cc_le_clear_accept_list), 4110 HCI_CC_STATUS(HCI_OP_LE_ADD_TO_ACCEPT_LIST, 4111 hci_cc_le_add_to_accept_list), 4112 HCI_CC_STATUS(HCI_OP_LE_DEL_FROM_ACCEPT_LIST, 4113 hci_cc_le_del_from_accept_list), 4114 HCI_CC(HCI_OP_LE_READ_SUPPORTED_STATES, hci_cc_le_read_supported_states, 4115 sizeof(struct hci_rp_le_read_supported_states)), 4116 HCI_CC(HCI_OP_LE_READ_DEF_DATA_LEN, hci_cc_le_read_def_data_len, 4117 sizeof(struct hci_rp_le_read_def_data_len)), 4118 HCI_CC_STATUS(HCI_OP_LE_WRITE_DEF_DATA_LEN, 4119 hci_cc_le_write_def_data_len), 4120 HCI_CC_STATUS(HCI_OP_LE_ADD_TO_RESOLV_LIST, 4121 hci_cc_le_add_to_resolv_list), 4122 HCI_CC_STATUS(HCI_OP_LE_DEL_FROM_RESOLV_LIST, 4123 hci_cc_le_del_from_resolv_list), 4124 HCI_CC_STATUS(HCI_OP_LE_CLEAR_RESOLV_LIST, 4125 hci_cc_le_clear_resolv_list), 4126 HCI_CC(HCI_OP_LE_READ_RESOLV_LIST_SIZE, hci_cc_le_read_resolv_list_size, 4127 sizeof(struct hci_rp_le_read_resolv_list_size)), 4128 HCI_CC_STATUS(HCI_OP_LE_SET_ADDR_RESOLV_ENABLE, 4129 hci_cc_le_set_addr_resolution_enable), 4130 HCI_CC(HCI_OP_LE_READ_MAX_DATA_LEN, hci_cc_le_read_max_data_len, 4131 sizeof(struct hci_rp_le_read_max_data_len)), 4132 HCI_CC_STATUS(HCI_OP_WRITE_LE_HOST_SUPPORTED, 4133 hci_cc_write_le_host_supported), 4134 HCI_CC_STATUS(HCI_OP_LE_SET_ADV_PARAM, hci_cc_set_adv_param), 4135 HCI_CC(HCI_OP_READ_RSSI, hci_cc_read_rssi, 4136 sizeof(struct hci_rp_read_rssi)), 4137 HCI_CC(HCI_OP_READ_TX_POWER, hci_cc_read_tx_power, 4138 sizeof(struct hci_rp_read_tx_power)), 4139 HCI_CC_STATUS(HCI_OP_WRITE_SSP_DEBUG_MODE, hci_cc_write_ssp_debug_mode), 4140 HCI_CC_STATUS(HCI_OP_LE_SET_EXT_SCAN_PARAMS, 4141 hci_cc_le_set_ext_scan_param), 4142 HCI_CC_STATUS(HCI_OP_LE_SET_EXT_SCAN_ENABLE, 4143 hci_cc_le_set_ext_scan_enable), 4144 HCI_CC_STATUS(HCI_OP_LE_SET_DEFAULT_PHY, hci_cc_le_set_default_phy), 4145 HCI_CC(HCI_OP_LE_READ_NUM_SUPPORTED_ADV_SETS, 4146 hci_cc_le_read_num_adv_sets, 4147 sizeof(struct hci_rp_le_read_num_supported_adv_sets)), 4148 HCI_CC_STATUS(HCI_OP_LE_SET_EXT_ADV_ENABLE, 4149 hci_cc_le_set_ext_adv_enable), 4150 HCI_CC_STATUS(HCI_OP_LE_SET_ADV_SET_RAND_ADDR, 4151 hci_cc_le_set_adv_set_random_addr), 4152 HCI_CC_STATUS(HCI_OP_LE_REMOVE_ADV_SET, hci_cc_le_remove_adv_set), 4153 HCI_CC_STATUS(HCI_OP_LE_CLEAR_ADV_SETS, hci_cc_le_clear_adv_sets), 4154 HCI_CC_STATUS(HCI_OP_LE_SET_PER_ADV_PARAMS, hci_cc_set_per_adv_param), 4155 HCI_CC_STATUS(HCI_OP_LE_SET_PER_ADV_ENABLE, 4156 hci_cc_le_set_per_adv_enable), 4157 HCI_CC(HCI_OP_LE_READ_TRANSMIT_POWER, hci_cc_le_read_transmit_power, 4158 sizeof(struct hci_rp_le_read_transmit_power)), 4159 HCI_CC_STATUS(HCI_OP_LE_SET_PRIVACY_MODE, hci_cc_le_set_privacy_mode), 4160 HCI_CC(HCI_OP_LE_READ_BUFFER_SIZE_V2, hci_cc_le_read_buffer_size_v2, 4161 sizeof(struct hci_rp_le_read_buffer_size_v2)), 4162 HCI_CC_VL(HCI_OP_LE_SET_CIG_PARAMS, hci_cc_le_set_cig_params, 4163 sizeof(struct hci_rp_le_set_cig_params), HCI_MAX_EVENT_SIZE), 4164 HCI_CC(HCI_OP_LE_SETUP_ISO_PATH, hci_cc_le_setup_iso_path, 4165 sizeof(struct hci_rp_le_setup_iso_path)), 4166 }; 4167 4168 static u8 hci_cc_func(struct hci_dev *hdev, const struct hci_cc *cc, 4169 struct sk_buff *skb) 4170 { 4171 void *data; 4172 4173 if (skb->len < cc->min_len) { 4174 bt_dev_err(hdev, "unexpected cc 0x%4.4x length: %u < %u", 4175 cc->op, skb->len, cc->min_len); 4176 return HCI_ERROR_UNSPECIFIED; 4177 } 4178 4179 /* Just warn if the length is over max_len size it still be possible to 4180 * partially parse the cc so leave to callback to decide if that is 4181 * acceptable. 4182 */ 4183 if (skb->len > cc->max_len) 4184 bt_dev_warn(hdev, "unexpected cc 0x%4.4x length: %u > %u", 4185 cc->op, skb->len, cc->max_len); 4186 4187 data = hci_cc_skb_pull(hdev, skb, cc->op, cc->min_len); 4188 if (!data) 4189 return HCI_ERROR_UNSPECIFIED; 4190 4191 return cc->func(hdev, data, skb); 4192 } 4193 4194 static void hci_cmd_complete_evt(struct hci_dev *hdev, void *data, 4195 struct sk_buff *skb, u16 *opcode, u8 *status, 4196 hci_req_complete_t *req_complete, 4197 hci_req_complete_skb_t *req_complete_skb) 4198 { 4199 struct hci_ev_cmd_complete *ev = data; 4200 int i; 4201 4202 *opcode = __le16_to_cpu(ev->opcode); 4203 4204 bt_dev_dbg(hdev, "opcode 0x%4.4x", *opcode); 4205 4206 for (i = 0; i < ARRAY_SIZE(hci_cc_table); i++) { 4207 if (hci_cc_table[i].op == *opcode) { 4208 *status = hci_cc_func(hdev, &hci_cc_table[i], skb); 4209 break; 4210 } 4211 } 4212 4213 if (i == ARRAY_SIZE(hci_cc_table)) { 4214 /* Unknown opcode, assume byte 0 contains the status, so 4215 * that e.g. __hci_cmd_sync() properly returns errors 4216 * for vendor specific commands send by HCI drivers. 4217 * If a vendor doesn't actually follow this convention we may 4218 * need to introduce a vendor CC table in order to properly set 4219 * the status. 4220 */ 4221 *status = skb->data[0]; 4222 } 4223 4224 handle_cmd_cnt_and_timer(hdev, ev->ncmd); 4225 4226 hci_req_cmd_complete(hdev, *opcode, *status, req_complete, 4227 req_complete_skb); 4228 4229 if (hci_dev_test_flag(hdev, HCI_CMD_PENDING)) { 4230 bt_dev_err(hdev, 4231 "unexpected event for opcode 0x%4.4x", *opcode); 4232 return; 4233 } 4234 4235 if (atomic_read(&hdev->cmd_cnt) && !skb_queue_empty(&hdev->cmd_q)) 4236 queue_work(hdev->workqueue, &hdev->cmd_work); 4237 } 4238 4239 static void hci_cs_le_create_cis(struct hci_dev *hdev, u8 status) 4240 { 4241 struct hci_cp_le_create_cis *cp; 4242 bool pending = false; 4243 int i; 4244 4245 bt_dev_dbg(hdev, "status 0x%2.2x", status); 4246 4247 if (!status) 4248 return; 4249 4250 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_CREATE_CIS); 4251 if (!cp) 4252 return; 4253 4254 hci_dev_lock(hdev); 4255 4256 /* Remove connection if command failed */ 4257 for (i = 0; i < cp->num_cis; i++) { 4258 struct hci_conn *conn; 4259 u16 handle; 4260 4261 handle = __le16_to_cpu(cp->cis[i].cis_handle); 4262 4263 conn = hci_conn_hash_lookup_handle(hdev, handle); 4264 if (conn) { 4265 if (test_and_clear_bit(HCI_CONN_CREATE_CIS, 4266 &conn->flags)) 4267 pending = true; 4268 conn->state = BT_CLOSED; 4269 hci_connect_cfm(conn, status); 4270 hci_conn_del(conn); 4271 } 4272 } 4273 cp->num_cis = 0; 4274 4275 if (pending) 4276 hci_le_create_cis_pending(hdev); 4277 4278 hci_dev_unlock(hdev); 4279 } 4280 4281 #define HCI_CS(_op, _func) \ 4282 { \ 4283 .op = _op, \ 4284 .func = _func, \ 4285 } 4286 4287 static const struct hci_cs { 4288 u16 op; 4289 void (*func)(struct hci_dev *hdev, __u8 status); 4290 } hci_cs_table[] = { 4291 HCI_CS(HCI_OP_INQUIRY, hci_cs_inquiry), 4292 HCI_CS(HCI_OP_CREATE_CONN, hci_cs_create_conn), 4293 HCI_CS(HCI_OP_DISCONNECT, hci_cs_disconnect), 4294 HCI_CS(HCI_OP_ADD_SCO, hci_cs_add_sco), 4295 HCI_CS(HCI_OP_AUTH_REQUESTED, hci_cs_auth_requested), 4296 HCI_CS(HCI_OP_SET_CONN_ENCRYPT, hci_cs_set_conn_encrypt), 4297 HCI_CS(HCI_OP_REMOTE_NAME_REQ, hci_cs_remote_name_req), 4298 HCI_CS(HCI_OP_READ_REMOTE_FEATURES, hci_cs_read_remote_features), 4299 HCI_CS(HCI_OP_READ_REMOTE_EXT_FEATURES, 4300 hci_cs_read_remote_ext_features), 4301 HCI_CS(HCI_OP_SETUP_SYNC_CONN, hci_cs_setup_sync_conn), 4302 HCI_CS(HCI_OP_ENHANCED_SETUP_SYNC_CONN, 4303 hci_cs_enhanced_setup_sync_conn), 4304 HCI_CS(HCI_OP_SNIFF_MODE, hci_cs_sniff_mode), 4305 HCI_CS(HCI_OP_EXIT_SNIFF_MODE, hci_cs_exit_sniff_mode), 4306 HCI_CS(HCI_OP_SWITCH_ROLE, hci_cs_switch_role), 4307 HCI_CS(HCI_OP_LE_CREATE_CONN, hci_cs_le_create_conn), 4308 HCI_CS(HCI_OP_LE_READ_REMOTE_FEATURES, hci_cs_le_read_remote_features), 4309 HCI_CS(HCI_OP_LE_START_ENC, hci_cs_le_start_enc), 4310 HCI_CS(HCI_OP_LE_EXT_CREATE_CONN, hci_cs_le_ext_create_conn), 4311 HCI_CS(HCI_OP_LE_CREATE_CIS, hci_cs_le_create_cis), 4312 HCI_CS(HCI_OP_LE_CREATE_BIG, hci_cs_le_create_big), 4313 }; 4314 4315 static void hci_cmd_status_evt(struct hci_dev *hdev, void *data, 4316 struct sk_buff *skb, u16 *opcode, u8 *status, 4317 hci_req_complete_t *req_complete, 4318 hci_req_complete_skb_t *req_complete_skb) 4319 { 4320 struct hci_ev_cmd_status *ev = data; 4321 int i; 4322 4323 *opcode = __le16_to_cpu(ev->opcode); 4324 *status = ev->status; 4325 4326 bt_dev_dbg(hdev, "opcode 0x%4.4x", *opcode); 4327 4328 for (i = 0; i < ARRAY_SIZE(hci_cs_table); i++) { 4329 if (hci_cs_table[i].op == *opcode) { 4330 hci_cs_table[i].func(hdev, ev->status); 4331 break; 4332 } 4333 } 4334 4335 handle_cmd_cnt_and_timer(hdev, ev->ncmd); 4336 4337 /* Indicate request completion if the command failed. Also, if 4338 * we're not waiting for a special event and we get a success 4339 * command status we should try to flag the request as completed 4340 * (since for this kind of commands there will not be a command 4341 * complete event). 4342 */ 4343 if (ev->status || (hdev->req_skb && !hci_skb_event(hdev->req_skb))) { 4344 hci_req_cmd_complete(hdev, *opcode, ev->status, req_complete, 4345 req_complete_skb); 4346 if (hci_dev_test_flag(hdev, HCI_CMD_PENDING)) { 4347 bt_dev_err(hdev, "unexpected event for opcode 0x%4.4x", 4348 *opcode); 4349 return; 4350 } 4351 } 4352 4353 if (atomic_read(&hdev->cmd_cnt) && !skb_queue_empty(&hdev->cmd_q)) 4354 queue_work(hdev->workqueue, &hdev->cmd_work); 4355 } 4356 4357 static void hci_hardware_error_evt(struct hci_dev *hdev, void *data, 4358 struct sk_buff *skb) 4359 { 4360 struct hci_ev_hardware_error *ev = data; 4361 4362 bt_dev_dbg(hdev, "code 0x%2.2x", ev->code); 4363 4364 hdev->hw_error_code = ev->code; 4365 4366 queue_work(hdev->req_workqueue, &hdev->error_reset); 4367 } 4368 4369 static void hci_role_change_evt(struct hci_dev *hdev, void *data, 4370 struct sk_buff *skb) 4371 { 4372 struct hci_ev_role_change *ev = data; 4373 struct hci_conn *conn; 4374 4375 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 4376 4377 hci_dev_lock(hdev); 4378 4379 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr); 4380 if (conn) { 4381 if (!ev->status) 4382 conn->role = ev->role; 4383 4384 clear_bit(HCI_CONN_RSWITCH_PEND, &conn->flags); 4385 4386 hci_role_switch_cfm(conn, ev->status, ev->role); 4387 } 4388 4389 hci_dev_unlock(hdev); 4390 } 4391 4392 static void hci_num_comp_pkts_evt(struct hci_dev *hdev, void *data, 4393 struct sk_buff *skb) 4394 { 4395 struct hci_ev_num_comp_pkts *ev = data; 4396 int i; 4397 4398 if (!hci_ev_skb_pull(hdev, skb, HCI_EV_NUM_COMP_PKTS, 4399 flex_array_size(ev, handles, ev->num))) 4400 return; 4401 4402 bt_dev_dbg(hdev, "num %d", ev->num); 4403 4404 hci_dev_lock(hdev); 4405 4406 for (i = 0; i < ev->num; i++) { 4407 struct hci_comp_pkts_info *info = &ev->handles[i]; 4408 struct hci_conn *conn; 4409 __u16 handle, count; 4410 unsigned int i; 4411 4412 handle = __le16_to_cpu(info->handle); 4413 count = __le16_to_cpu(info->count); 4414 4415 conn = hci_conn_hash_lookup_handle(hdev, handle); 4416 if (!conn) 4417 continue; 4418 4419 /* Check if there is really enough packets outstanding before 4420 * attempting to decrease the sent counter otherwise it could 4421 * underflow.. 4422 */ 4423 if (conn->sent >= count) { 4424 conn->sent -= count; 4425 } else { 4426 bt_dev_warn(hdev, "hcon %p sent %u < count %u", 4427 conn, conn->sent, count); 4428 conn->sent = 0; 4429 } 4430 4431 for (i = 0; i < count; ++i) 4432 hci_conn_tx_dequeue(conn); 4433 4434 switch (conn->type) { 4435 case ACL_LINK: 4436 hdev->acl_cnt += count; 4437 if (hdev->acl_cnt > hdev->acl_pkts) 4438 hdev->acl_cnt = hdev->acl_pkts; 4439 break; 4440 4441 case LE_LINK: 4442 if (hdev->le_pkts) { 4443 hdev->le_cnt += count; 4444 if (hdev->le_cnt > hdev->le_pkts) 4445 hdev->le_cnt = hdev->le_pkts; 4446 } else { 4447 hdev->acl_cnt += count; 4448 if (hdev->acl_cnt > hdev->acl_pkts) 4449 hdev->acl_cnt = hdev->acl_pkts; 4450 } 4451 break; 4452 4453 case SCO_LINK: 4454 case ESCO_LINK: 4455 hdev->sco_cnt += count; 4456 if (hdev->sco_cnt > hdev->sco_pkts) 4457 hdev->sco_cnt = hdev->sco_pkts; 4458 4459 break; 4460 4461 case CIS_LINK: 4462 case BIS_LINK: 4463 case PA_LINK: 4464 hdev->iso_cnt += count; 4465 if (hdev->iso_cnt > hdev->iso_pkts) 4466 hdev->iso_cnt = hdev->iso_pkts; 4467 break; 4468 4469 default: 4470 bt_dev_err(hdev, "unknown type %d conn %p", 4471 conn->type, conn); 4472 break; 4473 } 4474 } 4475 4476 queue_work(hdev->workqueue, &hdev->tx_work); 4477 4478 hci_dev_unlock(hdev); 4479 } 4480 4481 static void hci_mode_change_evt(struct hci_dev *hdev, void *data, 4482 struct sk_buff *skb) 4483 { 4484 struct hci_ev_mode_change *ev = data; 4485 struct hci_conn *conn; 4486 4487 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 4488 4489 hci_dev_lock(hdev); 4490 4491 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle)); 4492 if (conn) { 4493 conn->mode = ev->mode; 4494 4495 if (!test_and_clear_bit(HCI_CONN_MODE_CHANGE_PEND, 4496 &conn->flags)) { 4497 if (conn->mode == HCI_CM_ACTIVE) 4498 set_bit(HCI_CONN_POWER_SAVE, &conn->flags); 4499 else 4500 clear_bit(HCI_CONN_POWER_SAVE, &conn->flags); 4501 } 4502 4503 if (test_and_clear_bit(HCI_CONN_SCO_SETUP_PEND, &conn->flags)) 4504 hci_sco_setup(conn, ev->status); 4505 } 4506 4507 hci_dev_unlock(hdev); 4508 } 4509 4510 static void hci_pin_code_request_evt(struct hci_dev *hdev, void *data, 4511 struct sk_buff *skb) 4512 { 4513 struct hci_ev_pin_code_req *ev = data; 4514 struct hci_conn *conn; 4515 4516 bt_dev_dbg(hdev, ""); 4517 4518 hci_dev_lock(hdev); 4519 4520 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr); 4521 if (!conn) 4522 goto unlock; 4523 4524 if (conn->state == BT_CONNECTED) { 4525 hci_conn_hold(conn); 4526 conn->disc_timeout = HCI_PAIRING_TIMEOUT; 4527 hci_conn_drop(conn); 4528 } 4529 4530 if (!hci_dev_test_flag(hdev, HCI_BONDABLE) && 4531 !test_bit(HCI_CONN_AUTH_INITIATOR, &conn->flags)) { 4532 hci_send_cmd(hdev, HCI_OP_PIN_CODE_NEG_REPLY, 4533 sizeof(ev->bdaddr), &ev->bdaddr); 4534 } else if (hci_dev_test_flag(hdev, HCI_MGMT)) { 4535 u8 secure; 4536 4537 if (conn->pending_sec_level == BT_SECURITY_HIGH) 4538 secure = 1; 4539 else 4540 secure = 0; 4541 4542 mgmt_pin_code_request(hdev, &ev->bdaddr, secure); 4543 } 4544 4545 unlock: 4546 hci_dev_unlock(hdev); 4547 } 4548 4549 static void conn_set_key(struct hci_conn *conn, u8 key_type, u8 pin_len) 4550 { 4551 if (key_type == HCI_LK_CHANGED_COMBINATION) 4552 return; 4553 4554 conn->pin_length = pin_len; 4555 conn->key_type = key_type; 4556 4557 switch (key_type) { 4558 case HCI_LK_LOCAL_UNIT: 4559 case HCI_LK_REMOTE_UNIT: 4560 case HCI_LK_DEBUG_COMBINATION: 4561 return; 4562 case HCI_LK_COMBINATION: 4563 if (pin_len == 16) 4564 conn->pending_sec_level = BT_SECURITY_HIGH; 4565 else 4566 conn->pending_sec_level = BT_SECURITY_MEDIUM; 4567 break; 4568 case HCI_LK_UNAUTH_COMBINATION_P192: 4569 case HCI_LK_UNAUTH_COMBINATION_P256: 4570 conn->pending_sec_level = BT_SECURITY_MEDIUM; 4571 break; 4572 case HCI_LK_AUTH_COMBINATION_P192: 4573 conn->pending_sec_level = BT_SECURITY_HIGH; 4574 break; 4575 case HCI_LK_AUTH_COMBINATION_P256: 4576 conn->pending_sec_level = BT_SECURITY_FIPS; 4577 break; 4578 } 4579 } 4580 4581 static void hci_link_key_request_evt(struct hci_dev *hdev, void *data, 4582 struct sk_buff *skb) 4583 { 4584 struct hci_ev_link_key_req *ev = data; 4585 struct hci_cp_link_key_reply cp; 4586 struct hci_conn *conn; 4587 struct link_key *key; 4588 4589 bt_dev_dbg(hdev, ""); 4590 4591 if (!hci_dev_test_flag(hdev, HCI_MGMT)) 4592 return; 4593 4594 hci_dev_lock(hdev); 4595 4596 key = hci_find_link_key(hdev, &ev->bdaddr); 4597 if (!key) { 4598 bt_dev_dbg(hdev, "link key not found for %pMR", &ev->bdaddr); 4599 goto not_found; 4600 } 4601 4602 bt_dev_dbg(hdev, "found key type %u for %pMR", key->type, &ev->bdaddr); 4603 4604 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr); 4605 if (conn) { 4606 clear_bit(HCI_CONN_NEW_LINK_KEY, &conn->flags); 4607 4608 if ((key->type == HCI_LK_UNAUTH_COMBINATION_P192 || 4609 key->type == HCI_LK_UNAUTH_COMBINATION_P256) && 4610 conn->auth_type != 0xff && (conn->auth_type & 0x01)) { 4611 bt_dev_dbg(hdev, "ignoring unauthenticated key"); 4612 goto not_found; 4613 } 4614 4615 if (key->type == HCI_LK_COMBINATION && key->pin_len < 16 && 4616 (conn->pending_sec_level == BT_SECURITY_HIGH || 4617 conn->pending_sec_level == BT_SECURITY_FIPS)) { 4618 bt_dev_dbg(hdev, "ignoring key unauthenticated for high security"); 4619 goto not_found; 4620 } 4621 4622 conn_set_key(conn, key->type, key->pin_len); 4623 } 4624 4625 bacpy(&cp.bdaddr, &ev->bdaddr); 4626 memcpy(cp.link_key, key->val, HCI_LINK_KEY_SIZE); 4627 4628 hci_send_cmd(hdev, HCI_OP_LINK_KEY_REPLY, sizeof(cp), &cp); 4629 4630 hci_dev_unlock(hdev); 4631 4632 return; 4633 4634 not_found: 4635 hci_send_cmd(hdev, HCI_OP_LINK_KEY_NEG_REPLY, 6, &ev->bdaddr); 4636 hci_dev_unlock(hdev); 4637 } 4638 4639 static void hci_link_key_notify_evt(struct hci_dev *hdev, void *data, 4640 struct sk_buff *skb) 4641 { 4642 struct hci_ev_link_key_notify *ev = data; 4643 struct hci_conn *conn; 4644 struct link_key *key; 4645 bool persistent; 4646 u8 pin_len = 0; 4647 4648 bt_dev_dbg(hdev, ""); 4649 4650 hci_dev_lock(hdev); 4651 4652 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr); 4653 if (!conn) 4654 goto unlock; 4655 4656 /* Ignore NULL link key against CVE-2020-26555 */ 4657 if (!crypto_memneq(ev->link_key, ZERO_KEY, HCI_LINK_KEY_SIZE)) { 4658 bt_dev_dbg(hdev, "Ignore NULL link key (ZERO KEY) for %pMR", 4659 &ev->bdaddr); 4660 hci_disconnect(conn, HCI_ERROR_AUTH_FAILURE); 4661 hci_conn_drop(conn); 4662 goto unlock; 4663 } 4664 4665 hci_conn_hold(conn); 4666 conn->disc_timeout = HCI_DISCONN_TIMEOUT; 4667 hci_conn_drop(conn); 4668 4669 set_bit(HCI_CONN_NEW_LINK_KEY, &conn->flags); 4670 conn_set_key(conn, ev->key_type, conn->pin_length); 4671 4672 if (!hci_dev_test_flag(hdev, HCI_MGMT)) 4673 goto unlock; 4674 4675 key = hci_add_link_key(hdev, conn, &ev->bdaddr, ev->link_key, 4676 ev->key_type, pin_len, &persistent); 4677 if (!key) 4678 goto unlock; 4679 4680 /* Update connection information since adding the key will have 4681 * fixed up the type in the case of changed combination keys. 4682 */ 4683 if (ev->key_type == HCI_LK_CHANGED_COMBINATION) 4684 conn_set_key(conn, key->type, key->pin_len); 4685 4686 mgmt_new_link_key(hdev, key, persistent); 4687 4688 /* Keep debug keys around only if the HCI_KEEP_DEBUG_KEYS flag 4689 * is set. If it's not set simply remove the key from the kernel 4690 * list (we've still notified user space about it but with 4691 * store_hint being 0). 4692 */ 4693 if (key->type == HCI_LK_DEBUG_COMBINATION && 4694 !hci_dev_test_flag(hdev, HCI_KEEP_DEBUG_KEYS)) { 4695 list_del_rcu(&key->list); 4696 kfree_rcu(key, rcu); 4697 goto unlock; 4698 } 4699 4700 if (persistent) 4701 clear_bit(HCI_CONN_FLUSH_KEY, &conn->flags); 4702 else 4703 set_bit(HCI_CONN_FLUSH_KEY, &conn->flags); 4704 4705 unlock: 4706 hci_dev_unlock(hdev); 4707 } 4708 4709 static void hci_clock_offset_evt(struct hci_dev *hdev, void *data, 4710 struct sk_buff *skb) 4711 { 4712 struct hci_ev_clock_offset *ev = data; 4713 struct hci_conn *conn; 4714 4715 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 4716 4717 hci_dev_lock(hdev); 4718 4719 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle)); 4720 if (conn && !ev->status) { 4721 struct inquiry_entry *ie; 4722 4723 ie = hci_inquiry_cache_lookup(hdev, &conn->dst); 4724 if (ie) { 4725 ie->data.clock_offset = ev->clock_offset; 4726 ie->timestamp = jiffies; 4727 } 4728 } 4729 4730 hci_dev_unlock(hdev); 4731 } 4732 4733 static void hci_pkt_type_change_evt(struct hci_dev *hdev, void *data, 4734 struct sk_buff *skb) 4735 { 4736 struct hci_ev_pkt_type_change *ev = data; 4737 struct hci_conn *conn; 4738 4739 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 4740 4741 hci_dev_lock(hdev); 4742 4743 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle)); 4744 if (conn && !ev->status) 4745 conn->pkt_type = __le16_to_cpu(ev->pkt_type); 4746 4747 hci_dev_unlock(hdev); 4748 } 4749 4750 static void hci_pscan_rep_mode_evt(struct hci_dev *hdev, void *data, 4751 struct sk_buff *skb) 4752 { 4753 struct hci_ev_pscan_rep_mode *ev = data; 4754 struct inquiry_entry *ie; 4755 4756 bt_dev_dbg(hdev, ""); 4757 4758 hci_dev_lock(hdev); 4759 4760 ie = hci_inquiry_cache_lookup(hdev, &ev->bdaddr); 4761 if (ie) { 4762 ie->data.pscan_rep_mode = ev->pscan_rep_mode; 4763 ie->timestamp = jiffies; 4764 } 4765 4766 hci_dev_unlock(hdev); 4767 } 4768 4769 static void hci_inquiry_result_with_rssi_evt(struct hci_dev *hdev, void *edata, 4770 struct sk_buff *skb) 4771 { 4772 struct hci_ev_inquiry_result_rssi *ev = edata; 4773 struct inquiry_data data; 4774 int i; 4775 4776 bt_dev_dbg(hdev, "num_rsp %d", ev->num); 4777 4778 if (!ev->num) 4779 return; 4780 4781 if (hci_dev_test_flag(hdev, HCI_PERIODIC_INQ)) 4782 return; 4783 4784 hci_dev_lock(hdev); 4785 4786 if (skb->len == array_size(ev->num, 4787 sizeof(struct inquiry_info_rssi_pscan))) { 4788 struct inquiry_info_rssi_pscan *info; 4789 4790 for (i = 0; i < ev->num; i++) { 4791 u32 flags; 4792 4793 info = hci_ev_skb_pull(hdev, skb, 4794 HCI_EV_INQUIRY_RESULT_WITH_RSSI, 4795 sizeof(*info)); 4796 if (!info) { 4797 bt_dev_err(hdev, "Malformed HCI Event: 0x%2.2x", 4798 HCI_EV_INQUIRY_RESULT_WITH_RSSI); 4799 goto unlock; 4800 } 4801 4802 bacpy(&data.bdaddr, &info->bdaddr); 4803 data.pscan_rep_mode = info->pscan_rep_mode; 4804 data.pscan_period_mode = info->pscan_period_mode; 4805 data.pscan_mode = info->pscan_mode; 4806 memcpy(data.dev_class, info->dev_class, 3); 4807 data.clock_offset = info->clock_offset; 4808 data.rssi = info->rssi; 4809 data.ssp_mode = 0x00; 4810 4811 flags = hci_inquiry_cache_update(hdev, &data, false); 4812 4813 mgmt_device_found(hdev, &info->bdaddr, ACL_LINK, 0x00, 4814 info->dev_class, info->rssi, 4815 flags, NULL, 0, NULL, 0, 0); 4816 } 4817 } else if (skb->len == array_size(ev->num, 4818 sizeof(struct inquiry_info_rssi))) { 4819 struct inquiry_info_rssi *info; 4820 4821 for (i = 0; i < ev->num; i++) { 4822 u32 flags; 4823 4824 info = hci_ev_skb_pull(hdev, skb, 4825 HCI_EV_INQUIRY_RESULT_WITH_RSSI, 4826 sizeof(*info)); 4827 if (!info) { 4828 bt_dev_err(hdev, "Malformed HCI Event: 0x%2.2x", 4829 HCI_EV_INQUIRY_RESULT_WITH_RSSI); 4830 goto unlock; 4831 } 4832 4833 bacpy(&data.bdaddr, &info->bdaddr); 4834 data.pscan_rep_mode = info->pscan_rep_mode; 4835 data.pscan_period_mode = info->pscan_period_mode; 4836 data.pscan_mode = 0x00; 4837 memcpy(data.dev_class, info->dev_class, 3); 4838 data.clock_offset = info->clock_offset; 4839 data.rssi = info->rssi; 4840 data.ssp_mode = 0x00; 4841 4842 flags = hci_inquiry_cache_update(hdev, &data, false); 4843 4844 mgmt_device_found(hdev, &info->bdaddr, ACL_LINK, 0x00, 4845 info->dev_class, info->rssi, 4846 flags, NULL, 0, NULL, 0, 0); 4847 } 4848 } else { 4849 bt_dev_err(hdev, "Malformed HCI Event: 0x%2.2x", 4850 HCI_EV_INQUIRY_RESULT_WITH_RSSI); 4851 } 4852 unlock: 4853 hci_dev_unlock(hdev); 4854 } 4855 4856 static void hci_remote_ext_features_evt(struct hci_dev *hdev, void *data, 4857 struct sk_buff *skb) 4858 { 4859 struct hci_ev_remote_ext_features *ev = data; 4860 struct hci_conn *conn; 4861 4862 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 4863 4864 hci_dev_lock(hdev); 4865 4866 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle)); 4867 if (!conn) 4868 goto unlock; 4869 4870 if (ev->page < HCI_MAX_PAGES) 4871 memcpy(conn->features[ev->page], ev->features, 8); 4872 4873 if (!ev->status && ev->page == 0x01) { 4874 struct inquiry_entry *ie; 4875 4876 ie = hci_inquiry_cache_lookup(hdev, &conn->dst); 4877 if (ie) 4878 ie->data.ssp_mode = (ev->features[0] & LMP_HOST_SSP); 4879 4880 if (ev->features[0] & LMP_HOST_SSP) { 4881 set_bit(HCI_CONN_SSP_ENABLED, &conn->flags); 4882 } else { 4883 /* It is mandatory by the Bluetooth specification that 4884 * Extended Inquiry Results are only used when Secure 4885 * Simple Pairing is enabled, but some devices violate 4886 * this. 4887 * 4888 * To make these devices work, the internal SSP 4889 * enabled flag needs to be cleared if the remote host 4890 * features do not indicate SSP support */ 4891 clear_bit(HCI_CONN_SSP_ENABLED, &conn->flags); 4892 } 4893 4894 if (ev->features[0] & LMP_HOST_SC) 4895 set_bit(HCI_CONN_SC_ENABLED, &conn->flags); 4896 } 4897 4898 if (conn->state != BT_CONFIG) 4899 goto unlock; 4900 4901 if (!ev->status && !test_bit(HCI_CONN_MGMT_CONNECTED, &conn->flags)) { 4902 struct hci_cp_remote_name_req cp; 4903 memset(&cp, 0, sizeof(cp)); 4904 bacpy(&cp.bdaddr, &conn->dst); 4905 cp.pscan_rep_mode = 0x02; 4906 hci_send_cmd(hdev, HCI_OP_REMOTE_NAME_REQ, sizeof(cp), &cp); 4907 } else { 4908 mgmt_device_connected(hdev, conn, NULL, 0); 4909 } 4910 4911 if (!hci_outgoing_auth_needed(hdev, conn)) { 4912 conn->state = BT_CONNECTED; 4913 hci_connect_cfm(conn, ev->status); 4914 hci_conn_drop(conn); 4915 } 4916 4917 unlock: 4918 hci_dev_unlock(hdev); 4919 } 4920 4921 static void hci_sync_conn_complete_evt(struct hci_dev *hdev, void *data, 4922 struct sk_buff *skb) 4923 { 4924 struct hci_ev_sync_conn_complete *ev = data; 4925 struct hci_conn *conn; 4926 u8 status = ev->status; 4927 4928 switch (ev->link_type) { 4929 case SCO_LINK: 4930 case ESCO_LINK: 4931 break; 4932 default: 4933 /* As per Core 5.3 Vol 4 Part E 7.7.35 (p.2219), Link_Type 4934 * for HCI_Synchronous_Connection_Complete is limited to 4935 * either SCO or eSCO 4936 */ 4937 bt_dev_err(hdev, "Ignoring connect complete event for invalid link type"); 4938 return; 4939 } 4940 4941 bt_dev_dbg(hdev, "status 0x%2.2x", status); 4942 4943 hci_dev_lock(hdev); 4944 4945 conn = hci_conn_hash_lookup_ba(hdev, ev->link_type, &ev->bdaddr); 4946 if (!conn) { 4947 if (ev->link_type == ESCO_LINK) 4948 goto unlock; 4949 4950 /* When the link type in the event indicates SCO connection 4951 * and lookup of the connection object fails, then check 4952 * if an eSCO connection object exists. 4953 * 4954 * The core limits the synchronous connections to either 4955 * SCO or eSCO. The eSCO connection is preferred and tried 4956 * to be setup first and until successfully established, 4957 * the link type will be hinted as eSCO. 4958 */ 4959 conn = hci_conn_hash_lookup_ba(hdev, ESCO_LINK, &ev->bdaddr); 4960 if (!conn) 4961 goto unlock; 4962 } 4963 4964 /* The HCI_Synchronous_Connection_Complete event is only sent once per connection. 4965 * Processing it more than once per connection can corrupt kernel memory. 4966 * 4967 * As the connection handle is set here for the first time, it indicates 4968 * whether the connection is already set up. 4969 */ 4970 if (!HCI_CONN_HANDLE_UNSET(conn->handle)) { 4971 bt_dev_err(hdev, "Ignoring HCI_Sync_Conn_Complete event for existing connection"); 4972 goto unlock; 4973 } 4974 4975 switch (status) { 4976 case 0x00: 4977 status = hci_conn_set_handle(conn, __le16_to_cpu(ev->handle)); 4978 if (status) { 4979 conn->state = BT_CLOSED; 4980 break; 4981 } 4982 4983 conn->state = BT_CONNECTED; 4984 conn->type = ev->link_type; 4985 4986 hci_debugfs_create_conn(conn); 4987 hci_conn_add_sysfs(conn); 4988 break; 4989 4990 case 0x10: /* Connection Accept Timeout */ 4991 case 0x0d: /* Connection Rejected due to Limited Resources */ 4992 case 0x11: /* Unsupported Feature or Parameter Value */ 4993 case 0x1c: /* SCO interval rejected */ 4994 case 0x1a: /* Unsupported Remote Feature */ 4995 case 0x1e: /* Invalid LMP Parameters */ 4996 case 0x1f: /* Unspecified error */ 4997 case 0x20: /* Unsupported LMP Parameter value */ 4998 if (conn->out) { 4999 conn->pkt_type = (hdev->esco_type & SCO_ESCO_MASK) | 5000 (hdev->esco_type & EDR_ESCO_MASK); 5001 if (hci_setup_sync(conn, conn->parent->handle)) 5002 goto unlock; 5003 } 5004 fallthrough; 5005 5006 default: 5007 conn->state = BT_CLOSED; 5008 break; 5009 } 5010 5011 bt_dev_dbg(hdev, "SCO connected with air mode: %02x", ev->air_mode); 5012 /* Notify only in case of SCO over HCI transport data path which 5013 * is zero and non-zero value shall be non-HCI transport data path 5014 */ 5015 if (conn->codec.data_path == 0 && hdev->notify) { 5016 switch (ev->air_mode) { 5017 case 0x02: 5018 hdev->notify(hdev, HCI_NOTIFY_ENABLE_SCO_CVSD); 5019 break; 5020 case 0x03: 5021 hdev->notify(hdev, HCI_NOTIFY_ENABLE_SCO_TRANSP); 5022 break; 5023 } 5024 } 5025 5026 hci_connect_cfm(conn, status); 5027 if (status) 5028 hci_conn_del(conn); 5029 5030 unlock: 5031 hci_dev_unlock(hdev); 5032 } 5033 5034 static inline size_t eir_get_length(u8 *eir, size_t eir_len) 5035 { 5036 size_t parsed = 0; 5037 5038 while (parsed < eir_len) { 5039 u8 field_len = eir[0]; 5040 5041 if (field_len == 0) 5042 return parsed; 5043 5044 parsed += field_len + 1; 5045 eir += field_len + 1; 5046 } 5047 5048 return eir_len; 5049 } 5050 5051 static void hci_extended_inquiry_result_evt(struct hci_dev *hdev, void *edata, 5052 struct sk_buff *skb) 5053 { 5054 struct hci_ev_ext_inquiry_result *ev = edata; 5055 struct inquiry_data data; 5056 size_t eir_len; 5057 int i; 5058 5059 if (!hci_ev_skb_pull(hdev, skb, HCI_EV_EXTENDED_INQUIRY_RESULT, 5060 flex_array_size(ev, info, ev->num))) 5061 return; 5062 5063 bt_dev_dbg(hdev, "num %d", ev->num); 5064 5065 if (!ev->num) 5066 return; 5067 5068 if (hci_dev_test_flag(hdev, HCI_PERIODIC_INQ)) 5069 return; 5070 5071 hci_dev_lock(hdev); 5072 5073 for (i = 0; i < ev->num; i++) { 5074 struct extended_inquiry_info *info = &ev->info[i]; 5075 u32 flags; 5076 bool name_known; 5077 5078 bacpy(&data.bdaddr, &info->bdaddr); 5079 data.pscan_rep_mode = info->pscan_rep_mode; 5080 data.pscan_period_mode = info->pscan_period_mode; 5081 data.pscan_mode = 0x00; 5082 memcpy(data.dev_class, info->dev_class, 3); 5083 data.clock_offset = info->clock_offset; 5084 data.rssi = info->rssi; 5085 data.ssp_mode = 0x01; 5086 5087 if (hci_dev_test_flag(hdev, HCI_MGMT)) 5088 name_known = eir_get_data(info->data, 5089 sizeof(info->data), 5090 EIR_NAME_COMPLETE, NULL); 5091 else 5092 name_known = true; 5093 5094 flags = hci_inquiry_cache_update(hdev, &data, name_known); 5095 5096 eir_len = eir_get_length(info->data, sizeof(info->data)); 5097 5098 mgmt_device_found(hdev, &info->bdaddr, ACL_LINK, 0x00, 5099 info->dev_class, info->rssi, 5100 flags, info->data, eir_len, NULL, 0, 0); 5101 } 5102 5103 hci_dev_unlock(hdev); 5104 } 5105 5106 static void hci_key_refresh_complete_evt(struct hci_dev *hdev, void *data, 5107 struct sk_buff *skb) 5108 { 5109 struct hci_ev_key_refresh_complete *ev = data; 5110 struct hci_conn *conn; 5111 5112 bt_dev_dbg(hdev, "status 0x%2.2x handle 0x%4.4x", ev->status, 5113 __le16_to_cpu(ev->handle)); 5114 5115 hci_dev_lock(hdev); 5116 5117 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle)); 5118 if (!conn) 5119 goto unlock; 5120 5121 /* For BR/EDR the necessary steps are taken through the 5122 * auth_complete event. 5123 */ 5124 if (conn->type != LE_LINK) 5125 goto unlock; 5126 5127 if (!ev->status) 5128 conn->sec_level = conn->pending_sec_level; 5129 5130 clear_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags); 5131 5132 if (ev->status && conn->state == BT_CONNECTED) { 5133 hci_disconnect(conn, HCI_ERROR_AUTH_FAILURE); 5134 hci_conn_drop(conn); 5135 goto unlock; 5136 } 5137 5138 if (conn->state == BT_CONFIG) { 5139 if (!ev->status) 5140 conn->state = BT_CONNECTED; 5141 5142 hci_connect_cfm(conn, ev->status); 5143 hci_conn_drop(conn); 5144 } else { 5145 hci_auth_cfm(conn, ev->status); 5146 5147 hci_conn_hold(conn); 5148 conn->disc_timeout = HCI_DISCONN_TIMEOUT; 5149 hci_conn_drop(conn); 5150 } 5151 5152 unlock: 5153 hci_dev_unlock(hdev); 5154 } 5155 5156 static u8 hci_get_auth_req(struct hci_conn *conn) 5157 { 5158 /* If remote requests no-bonding follow that lead */ 5159 if (conn->remote_auth == HCI_AT_NO_BONDING || 5160 conn->remote_auth == HCI_AT_NO_BONDING_MITM) 5161 return conn->remote_auth | (conn->auth_type & 0x01); 5162 5163 /* If both remote and local have enough IO capabilities, require 5164 * MITM protection 5165 */ 5166 if (conn->remote_cap != HCI_IO_NO_INPUT_OUTPUT && 5167 conn->io_capability != HCI_IO_NO_INPUT_OUTPUT) 5168 return conn->remote_auth | 0x01; 5169 5170 /* No MITM protection possible so ignore remote requirement */ 5171 return (conn->remote_auth & ~0x01) | (conn->auth_type & 0x01); 5172 } 5173 5174 static u8 bredr_oob_data_present(struct hci_conn *conn) 5175 { 5176 struct hci_dev *hdev = conn->hdev; 5177 struct oob_data *data; 5178 5179 data = hci_find_remote_oob_data(hdev, &conn->dst, BDADDR_BREDR); 5180 if (!data) 5181 return 0x00; 5182 5183 if (bredr_sc_enabled(hdev)) { 5184 /* When Secure Connections is enabled, then just 5185 * return the present value stored with the OOB 5186 * data. The stored value contains the right present 5187 * information. However it can only be trusted when 5188 * not in Secure Connection Only mode. 5189 */ 5190 if (!hci_dev_test_flag(hdev, HCI_SC_ONLY)) 5191 return data->present; 5192 5193 /* When Secure Connections Only mode is enabled, then 5194 * the P-256 values are required. If they are not 5195 * available, then do not declare that OOB data is 5196 * present. 5197 */ 5198 if (!crypto_memneq(data->rand256, ZERO_KEY, 16) || 5199 !crypto_memneq(data->hash256, ZERO_KEY, 16)) 5200 return 0x00; 5201 5202 return 0x02; 5203 } 5204 5205 /* When Secure Connections is not enabled or actually 5206 * not supported by the hardware, then check that if 5207 * P-192 data values are present. 5208 */ 5209 if (!crypto_memneq(data->rand192, ZERO_KEY, 16) || 5210 !crypto_memneq(data->hash192, ZERO_KEY, 16)) 5211 return 0x00; 5212 5213 return 0x01; 5214 } 5215 5216 static void hci_io_capa_request_evt(struct hci_dev *hdev, void *data, 5217 struct sk_buff *skb) 5218 { 5219 struct hci_ev_io_capa_request *ev = data; 5220 struct hci_conn *conn; 5221 5222 bt_dev_dbg(hdev, ""); 5223 5224 hci_dev_lock(hdev); 5225 5226 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr); 5227 if (!conn || !hci_dev_test_flag(hdev, HCI_SSP_ENABLED)) 5228 goto unlock; 5229 5230 /* Assume remote supports SSP since it has triggered this event */ 5231 set_bit(HCI_CONN_SSP_ENABLED, &conn->flags); 5232 5233 hci_conn_hold(conn); 5234 5235 if (!hci_dev_test_flag(hdev, HCI_MGMT)) 5236 goto unlock; 5237 5238 /* Allow pairing if we're pairable, the initiators of the 5239 * pairing or if the remote is not requesting bonding. 5240 */ 5241 if (hci_dev_test_flag(hdev, HCI_BONDABLE) || 5242 test_bit(HCI_CONN_AUTH_INITIATOR, &conn->flags) || 5243 (conn->remote_auth & ~0x01) == HCI_AT_NO_BONDING) { 5244 struct hci_cp_io_capability_reply cp; 5245 5246 bacpy(&cp.bdaddr, &ev->bdaddr); 5247 /* Change the IO capability from KeyboardDisplay 5248 * to DisplayYesNo as it is not supported by BT spec. */ 5249 cp.capability = (conn->io_capability == 0x04) ? 5250 HCI_IO_DISPLAY_YESNO : conn->io_capability; 5251 5252 /* If we are initiators, there is no remote information yet */ 5253 if (conn->remote_auth == 0xff) { 5254 /* Request MITM protection if our IO caps allow it 5255 * except for the no-bonding case. 5256 */ 5257 if (conn->io_capability != HCI_IO_NO_INPUT_OUTPUT && 5258 conn->auth_type != HCI_AT_NO_BONDING) 5259 conn->auth_type |= 0x01; 5260 } else { 5261 conn->auth_type = hci_get_auth_req(conn); 5262 } 5263 5264 /* If we're not bondable, force one of the non-bondable 5265 * authentication requirement values. 5266 */ 5267 if (!hci_dev_test_flag(hdev, HCI_BONDABLE)) 5268 conn->auth_type &= HCI_AT_NO_BONDING_MITM; 5269 5270 cp.authentication = conn->auth_type; 5271 cp.oob_data = bredr_oob_data_present(conn); 5272 5273 hci_send_cmd(hdev, HCI_OP_IO_CAPABILITY_REPLY, 5274 sizeof(cp), &cp); 5275 } else { 5276 struct hci_cp_io_capability_neg_reply cp; 5277 5278 bacpy(&cp.bdaddr, &ev->bdaddr); 5279 cp.reason = HCI_ERROR_PAIRING_NOT_ALLOWED; 5280 5281 hci_send_cmd(hdev, HCI_OP_IO_CAPABILITY_NEG_REPLY, 5282 sizeof(cp), &cp); 5283 } 5284 5285 unlock: 5286 hci_dev_unlock(hdev); 5287 } 5288 5289 static void hci_io_capa_reply_evt(struct hci_dev *hdev, void *data, 5290 struct sk_buff *skb) 5291 { 5292 struct hci_ev_io_capa_reply *ev = data; 5293 struct hci_conn *conn; 5294 5295 bt_dev_dbg(hdev, ""); 5296 5297 hci_dev_lock(hdev); 5298 5299 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr); 5300 if (!conn) 5301 goto unlock; 5302 5303 conn->remote_cap = ev->capability; 5304 conn->remote_auth = ev->authentication; 5305 5306 unlock: 5307 hci_dev_unlock(hdev); 5308 } 5309 5310 static void hci_user_confirm_request_evt(struct hci_dev *hdev, void *data, 5311 struct sk_buff *skb) 5312 { 5313 struct hci_ev_user_confirm_req *ev = data; 5314 int loc_mitm, rem_mitm, confirm_hint = 0; 5315 struct hci_conn *conn; 5316 5317 bt_dev_dbg(hdev, ""); 5318 5319 hci_dev_lock(hdev); 5320 5321 if (!hci_dev_test_flag(hdev, HCI_MGMT)) 5322 goto unlock; 5323 5324 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr); 5325 if (!conn) 5326 goto unlock; 5327 5328 loc_mitm = (conn->auth_type & 0x01); 5329 rem_mitm = (conn->remote_auth & 0x01); 5330 5331 /* If we require MITM but the remote device can't provide that 5332 * (it has NoInputNoOutput) then reject the confirmation 5333 * request. We check the security level here since it doesn't 5334 * necessarily match conn->auth_type. 5335 */ 5336 if (conn->pending_sec_level > BT_SECURITY_MEDIUM && 5337 conn->remote_cap == HCI_IO_NO_INPUT_OUTPUT) { 5338 bt_dev_dbg(hdev, "Rejecting request: remote device can't provide MITM"); 5339 hci_send_cmd(hdev, HCI_OP_USER_CONFIRM_NEG_REPLY, 5340 sizeof(ev->bdaddr), &ev->bdaddr); 5341 goto unlock; 5342 } 5343 5344 /* If no side requires MITM protection; use JUST_CFM method */ 5345 if ((!loc_mitm || conn->remote_cap == HCI_IO_NO_INPUT_OUTPUT) && 5346 (!rem_mitm || conn->io_capability == HCI_IO_NO_INPUT_OUTPUT)) { 5347 5348 /* If we're not the initiator of request authorization and the 5349 * local IO capability is not NoInputNoOutput, use JUST_WORKS 5350 * method (mgmt_user_confirm with confirm_hint set to 1). 5351 */ 5352 if (!test_bit(HCI_CONN_AUTH_PEND, &conn->flags) && 5353 conn->io_capability != HCI_IO_NO_INPUT_OUTPUT) { 5354 bt_dev_dbg(hdev, "Confirming auto-accept as acceptor"); 5355 confirm_hint = 1; 5356 goto confirm; 5357 } 5358 5359 /* If there already exists link key in local host, leave the 5360 * decision to user space since the remote device could be 5361 * legitimate or malicious. 5362 */ 5363 if (hci_find_link_key(hdev, &ev->bdaddr)) { 5364 bt_dev_dbg(hdev, "Local host already has link key"); 5365 confirm_hint = 1; 5366 goto confirm; 5367 } 5368 5369 BT_DBG("Auto-accept of user confirmation with %ums delay", 5370 hdev->auto_accept_delay); 5371 5372 if (hdev->auto_accept_delay > 0) { 5373 int delay = msecs_to_jiffies(hdev->auto_accept_delay); 5374 queue_delayed_work(conn->hdev->workqueue, 5375 &conn->auto_accept_work, delay); 5376 goto unlock; 5377 } 5378 5379 hci_send_cmd(hdev, HCI_OP_USER_CONFIRM_REPLY, 5380 sizeof(ev->bdaddr), &ev->bdaddr); 5381 goto unlock; 5382 } 5383 5384 confirm: 5385 mgmt_user_confirm_request(hdev, &ev->bdaddr, ACL_LINK, 0, 5386 le32_to_cpu(ev->passkey), confirm_hint); 5387 5388 unlock: 5389 hci_dev_unlock(hdev); 5390 } 5391 5392 static void hci_user_passkey_request_evt(struct hci_dev *hdev, void *data, 5393 struct sk_buff *skb) 5394 { 5395 struct hci_ev_user_passkey_req *ev = data; 5396 5397 bt_dev_dbg(hdev, ""); 5398 5399 if (hci_dev_test_flag(hdev, HCI_MGMT)) 5400 mgmt_user_passkey_request(hdev, &ev->bdaddr, ACL_LINK, 0); 5401 } 5402 5403 static void hci_user_passkey_notify_evt(struct hci_dev *hdev, void *data, 5404 struct sk_buff *skb) 5405 { 5406 struct hci_ev_user_passkey_notify *ev = data; 5407 struct hci_conn *conn; 5408 5409 bt_dev_dbg(hdev, ""); 5410 5411 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr); 5412 if (!conn) 5413 return; 5414 5415 conn->passkey_notify = __le32_to_cpu(ev->passkey); 5416 conn->passkey_entered = 0; 5417 5418 if (hci_dev_test_flag(hdev, HCI_MGMT)) 5419 mgmt_user_passkey_notify(hdev, &conn->dst, conn->type, 5420 conn->dst_type, conn->passkey_notify, 5421 conn->passkey_entered); 5422 } 5423 5424 static void hci_keypress_notify_evt(struct hci_dev *hdev, void *data, 5425 struct sk_buff *skb) 5426 { 5427 struct hci_ev_keypress_notify *ev = data; 5428 struct hci_conn *conn; 5429 5430 bt_dev_dbg(hdev, ""); 5431 5432 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr); 5433 if (!conn) 5434 return; 5435 5436 switch (ev->type) { 5437 case HCI_KEYPRESS_STARTED: 5438 conn->passkey_entered = 0; 5439 return; 5440 5441 case HCI_KEYPRESS_ENTERED: 5442 conn->passkey_entered++; 5443 break; 5444 5445 case HCI_KEYPRESS_ERASED: 5446 conn->passkey_entered--; 5447 break; 5448 5449 case HCI_KEYPRESS_CLEARED: 5450 conn->passkey_entered = 0; 5451 break; 5452 5453 case HCI_KEYPRESS_COMPLETED: 5454 return; 5455 } 5456 5457 if (hci_dev_test_flag(hdev, HCI_MGMT)) 5458 mgmt_user_passkey_notify(hdev, &conn->dst, conn->type, 5459 conn->dst_type, conn->passkey_notify, 5460 conn->passkey_entered); 5461 } 5462 5463 static void hci_simple_pair_complete_evt(struct hci_dev *hdev, void *data, 5464 struct sk_buff *skb) 5465 { 5466 struct hci_ev_simple_pair_complete *ev = data; 5467 struct hci_conn *conn; 5468 5469 bt_dev_dbg(hdev, ""); 5470 5471 hci_dev_lock(hdev); 5472 5473 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr); 5474 if (!conn || !hci_conn_ssp_enabled(conn)) 5475 goto unlock; 5476 5477 /* Reset the authentication requirement to unknown */ 5478 conn->remote_auth = 0xff; 5479 5480 /* To avoid duplicate auth_failed events to user space we check 5481 * the HCI_CONN_AUTH_PEND flag which will be set if we 5482 * initiated the authentication. A traditional auth_complete 5483 * event gets always produced as initiator and is also mapped to 5484 * the mgmt_auth_failed event */ 5485 if (!test_bit(HCI_CONN_AUTH_PEND, &conn->flags) && ev->status) 5486 mgmt_auth_failed(conn, ev->status); 5487 5488 hci_conn_drop(conn); 5489 5490 unlock: 5491 hci_dev_unlock(hdev); 5492 } 5493 5494 static void hci_remote_host_features_evt(struct hci_dev *hdev, void *data, 5495 struct sk_buff *skb) 5496 { 5497 struct hci_ev_remote_host_features *ev = data; 5498 struct inquiry_entry *ie; 5499 struct hci_conn *conn; 5500 5501 bt_dev_dbg(hdev, ""); 5502 5503 hci_dev_lock(hdev); 5504 5505 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr); 5506 if (conn) 5507 memcpy(conn->features[1], ev->features, 8); 5508 5509 ie = hci_inquiry_cache_lookup(hdev, &ev->bdaddr); 5510 if (ie) 5511 ie->data.ssp_mode = (ev->features[0] & LMP_HOST_SSP); 5512 5513 hci_dev_unlock(hdev); 5514 } 5515 5516 static void hci_remote_oob_data_request_evt(struct hci_dev *hdev, void *edata, 5517 struct sk_buff *skb) 5518 { 5519 struct hci_ev_remote_oob_data_request *ev = edata; 5520 struct oob_data *data; 5521 5522 bt_dev_dbg(hdev, ""); 5523 5524 hci_dev_lock(hdev); 5525 5526 if (!hci_dev_test_flag(hdev, HCI_MGMT)) 5527 goto unlock; 5528 5529 data = hci_find_remote_oob_data(hdev, &ev->bdaddr, BDADDR_BREDR); 5530 if (!data) { 5531 struct hci_cp_remote_oob_data_neg_reply cp; 5532 5533 bacpy(&cp.bdaddr, &ev->bdaddr); 5534 hci_send_cmd(hdev, HCI_OP_REMOTE_OOB_DATA_NEG_REPLY, 5535 sizeof(cp), &cp); 5536 goto unlock; 5537 } 5538 5539 if (bredr_sc_enabled(hdev)) { 5540 struct hci_cp_remote_oob_ext_data_reply cp; 5541 5542 bacpy(&cp.bdaddr, &ev->bdaddr); 5543 if (hci_dev_test_flag(hdev, HCI_SC_ONLY)) { 5544 memset(cp.hash192, 0, sizeof(cp.hash192)); 5545 memset(cp.rand192, 0, sizeof(cp.rand192)); 5546 } else { 5547 memcpy(cp.hash192, data->hash192, sizeof(cp.hash192)); 5548 memcpy(cp.rand192, data->rand192, sizeof(cp.rand192)); 5549 } 5550 memcpy(cp.hash256, data->hash256, sizeof(cp.hash256)); 5551 memcpy(cp.rand256, data->rand256, sizeof(cp.rand256)); 5552 5553 hci_send_cmd(hdev, HCI_OP_REMOTE_OOB_EXT_DATA_REPLY, 5554 sizeof(cp), &cp); 5555 } else { 5556 struct hci_cp_remote_oob_data_reply cp; 5557 5558 bacpy(&cp.bdaddr, &ev->bdaddr); 5559 memcpy(cp.hash, data->hash192, sizeof(cp.hash)); 5560 memcpy(cp.rand, data->rand192, sizeof(cp.rand)); 5561 5562 hci_send_cmd(hdev, HCI_OP_REMOTE_OOB_DATA_REPLY, 5563 sizeof(cp), &cp); 5564 } 5565 5566 unlock: 5567 hci_dev_unlock(hdev); 5568 } 5569 5570 static void le_conn_update_addr(struct hci_conn *conn, bdaddr_t *bdaddr, 5571 u8 bdaddr_type, bdaddr_t *local_rpa) 5572 { 5573 if (conn->out) { 5574 conn->dst_type = bdaddr_type; 5575 conn->resp_addr_type = bdaddr_type; 5576 bacpy(&conn->resp_addr, bdaddr); 5577 5578 /* Check if the controller has set a Local RPA then it must be 5579 * used instead or hdev->rpa. 5580 */ 5581 if (local_rpa && bacmp(local_rpa, BDADDR_ANY)) { 5582 conn->init_addr_type = ADDR_LE_DEV_RANDOM; 5583 bacpy(&conn->init_addr, local_rpa); 5584 } else if (hci_dev_test_flag(conn->hdev, HCI_PRIVACY)) { 5585 conn->init_addr_type = ADDR_LE_DEV_RANDOM; 5586 bacpy(&conn->init_addr, &conn->hdev->rpa); 5587 } else { 5588 hci_copy_identity_address(conn->hdev, &conn->init_addr, 5589 &conn->init_addr_type); 5590 } 5591 } else { 5592 conn->resp_addr_type = conn->hdev->adv_addr_type; 5593 /* Check if the controller has set a Local RPA then it must be 5594 * used instead or hdev->rpa. 5595 */ 5596 if (local_rpa && bacmp(local_rpa, BDADDR_ANY)) { 5597 conn->resp_addr_type = ADDR_LE_DEV_RANDOM; 5598 bacpy(&conn->resp_addr, local_rpa); 5599 } else if (conn->hdev->adv_addr_type == ADDR_LE_DEV_RANDOM) { 5600 /* In case of ext adv, resp_addr will be updated in 5601 * Adv Terminated event. 5602 */ 5603 if (!ext_adv_capable(conn->hdev)) 5604 bacpy(&conn->resp_addr, 5605 &conn->hdev->random_addr); 5606 } else { 5607 bacpy(&conn->resp_addr, &conn->hdev->bdaddr); 5608 } 5609 5610 conn->init_addr_type = bdaddr_type; 5611 bacpy(&conn->init_addr, bdaddr); 5612 5613 /* For incoming connections, set the default minimum 5614 * and maximum connection interval. They will be used 5615 * to check if the parameters are in range and if not 5616 * trigger the connection update procedure. 5617 */ 5618 conn->le_conn_min_interval = conn->hdev->le_conn_min_interval; 5619 conn->le_conn_max_interval = conn->hdev->le_conn_max_interval; 5620 } 5621 } 5622 5623 static void le_conn_complete_evt(struct hci_dev *hdev, u8 status, 5624 bdaddr_t *bdaddr, u8 bdaddr_type, 5625 bdaddr_t *local_rpa, u8 role, u16 handle, 5626 u16 interval, u16 latency, 5627 u16 supervision_timeout) 5628 { 5629 struct hci_conn_params *params; 5630 struct hci_conn *conn; 5631 struct smp_irk *irk; 5632 u8 addr_type; 5633 5634 hci_dev_lock(hdev); 5635 5636 /* All controllers implicitly stop advertising in the event of a 5637 * connection, so ensure that the state bit is cleared. 5638 */ 5639 hci_dev_clear_flag(hdev, HCI_LE_ADV); 5640 5641 /* Check for existing connection: 5642 * 5643 * 1. If it doesn't exist then use the role to create a new object. 5644 * 2. If it does exist confirm that it is connecting/BT_CONNECT in case 5645 * of initiator/master role since there could be a collision where 5646 * either side is attempting to connect or something like a fuzzing 5647 * testing is trying to play tricks to destroy the hcon object before 5648 * it even attempts to connect (e.g. hcon->state == BT_OPEN). 5649 */ 5650 conn = hci_conn_hash_lookup_role(hdev, LE_LINK, role, bdaddr); 5651 if (!conn || 5652 (conn->role == HCI_ROLE_MASTER && conn->state != BT_CONNECT)) { 5653 /* In case of error status and there is no connection pending 5654 * just unlock as there is nothing to cleanup. 5655 */ 5656 if (status) 5657 goto unlock; 5658 5659 conn = hci_conn_add_unset(hdev, LE_LINK, bdaddr, role); 5660 if (IS_ERR(conn)) { 5661 bt_dev_err(hdev, "connection err: %ld", PTR_ERR(conn)); 5662 goto unlock; 5663 } 5664 5665 conn->dst_type = bdaddr_type; 5666 5667 /* If we didn't have a hci_conn object previously 5668 * but we're in central role this must be something 5669 * initiated using an accept list. Since accept list based 5670 * connections are not "first class citizens" we don't 5671 * have full tracking of them. Therefore, we go ahead 5672 * with a "best effort" approach of determining the 5673 * initiator address based on the HCI_PRIVACY flag. 5674 */ 5675 if (conn->out) { 5676 conn->resp_addr_type = bdaddr_type; 5677 bacpy(&conn->resp_addr, bdaddr); 5678 if (hci_dev_test_flag(hdev, HCI_PRIVACY)) { 5679 conn->init_addr_type = ADDR_LE_DEV_RANDOM; 5680 bacpy(&conn->init_addr, &hdev->rpa); 5681 } else { 5682 hci_copy_identity_address(hdev, 5683 &conn->init_addr, 5684 &conn->init_addr_type); 5685 } 5686 } 5687 } else { 5688 cancel_delayed_work(&conn->le_conn_timeout); 5689 } 5690 5691 /* The HCI_LE_Connection_Complete event is only sent once per connection. 5692 * Processing it more than once per connection can corrupt kernel memory. 5693 * 5694 * As the connection handle is set here for the first time, it indicates 5695 * whether the connection is already set up. 5696 */ 5697 if (!HCI_CONN_HANDLE_UNSET(conn->handle)) { 5698 bt_dev_err(hdev, "Ignoring HCI_Connection_Complete for existing connection"); 5699 goto unlock; 5700 } 5701 5702 le_conn_update_addr(conn, bdaddr, bdaddr_type, local_rpa); 5703 5704 /* Lookup the identity address from the stored connection 5705 * address and address type. 5706 * 5707 * When establishing connections to an identity address, the 5708 * connection procedure will store the resolvable random 5709 * address first. Now if it can be converted back into the 5710 * identity address, start using the identity address from 5711 * now on. 5712 */ 5713 irk = hci_get_irk(hdev, &conn->dst, conn->dst_type); 5714 if (irk) { 5715 bacpy(&conn->dst, &irk->bdaddr); 5716 conn->dst_type = irk->addr_type; 5717 } 5718 5719 conn->dst_type = ev_bdaddr_type(hdev, conn->dst_type, NULL); 5720 5721 /* All connection failure handling is taken care of by the 5722 * hci_conn_failed function which is triggered by the HCI 5723 * request completion callbacks used for connecting. 5724 */ 5725 if (status || hci_conn_set_handle(conn, handle)) 5726 goto unlock; 5727 5728 /* Drop the connection if it has been aborted */ 5729 if (test_bit(HCI_CONN_CANCEL, &conn->flags)) { 5730 hci_conn_drop(conn); 5731 goto unlock; 5732 } 5733 5734 if (conn->dst_type == ADDR_LE_DEV_PUBLIC) 5735 addr_type = BDADDR_LE_PUBLIC; 5736 else 5737 addr_type = BDADDR_LE_RANDOM; 5738 5739 /* Drop the connection if the device is blocked */ 5740 if (hci_bdaddr_list_lookup(&hdev->reject_list, &conn->dst, addr_type)) { 5741 hci_conn_drop(conn); 5742 goto unlock; 5743 } 5744 5745 mgmt_device_connected(hdev, conn, NULL, 0); 5746 5747 conn->sec_level = BT_SECURITY_LOW; 5748 conn->state = BT_CONFIG; 5749 5750 /* Store current advertising instance as connection advertising instance 5751 * when software rotation is in use so it can be re-enabled when 5752 * disconnected. 5753 */ 5754 if (!ext_adv_capable(hdev)) 5755 conn->adv_instance = hdev->cur_adv_instance; 5756 5757 conn->le_conn_interval = interval; 5758 conn->le_conn_latency = latency; 5759 conn->le_supv_timeout = supervision_timeout; 5760 5761 hci_debugfs_create_conn(conn); 5762 hci_conn_add_sysfs(conn); 5763 5764 /* The remote features procedure is defined for central 5765 * role only. So only in case of an initiated connection 5766 * request the remote features. 5767 * 5768 * If the local controller supports peripheral-initiated features 5769 * exchange, then requesting the remote features in peripheral 5770 * role is possible. Otherwise just transition into the 5771 * connected state without requesting the remote features. 5772 */ 5773 if (conn->out || 5774 (hdev->le_features[0] & HCI_LE_PERIPHERAL_FEATURES)) { 5775 struct hci_cp_le_read_remote_features cp; 5776 5777 cp.handle = __cpu_to_le16(conn->handle); 5778 5779 hci_send_cmd(hdev, HCI_OP_LE_READ_REMOTE_FEATURES, 5780 sizeof(cp), &cp); 5781 5782 hci_conn_hold(conn); 5783 } else { 5784 conn->state = BT_CONNECTED; 5785 hci_connect_cfm(conn, status); 5786 } 5787 5788 params = hci_pend_le_action_lookup(&hdev->pend_le_conns, &conn->dst, 5789 conn->dst_type); 5790 if (params) { 5791 hci_pend_le_list_del_init(params); 5792 if (params->conn) { 5793 hci_conn_drop(params->conn); 5794 hci_conn_put(params->conn); 5795 params->conn = NULL; 5796 } 5797 } 5798 5799 unlock: 5800 hci_update_passive_scan(hdev); 5801 hci_dev_unlock(hdev); 5802 } 5803 5804 static void hci_le_conn_complete_evt(struct hci_dev *hdev, void *data, 5805 struct sk_buff *skb) 5806 { 5807 struct hci_ev_le_conn_complete *ev = data; 5808 5809 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 5810 5811 le_conn_complete_evt(hdev, ev->status, &ev->bdaddr, ev->bdaddr_type, 5812 NULL, ev->role, le16_to_cpu(ev->handle), 5813 le16_to_cpu(ev->interval), 5814 le16_to_cpu(ev->latency), 5815 le16_to_cpu(ev->supervision_timeout)); 5816 } 5817 5818 static void hci_le_enh_conn_complete_evt(struct hci_dev *hdev, void *data, 5819 struct sk_buff *skb) 5820 { 5821 struct hci_ev_le_enh_conn_complete *ev = data; 5822 5823 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 5824 5825 le_conn_complete_evt(hdev, ev->status, &ev->bdaddr, ev->bdaddr_type, 5826 &ev->local_rpa, ev->role, le16_to_cpu(ev->handle), 5827 le16_to_cpu(ev->interval), 5828 le16_to_cpu(ev->latency), 5829 le16_to_cpu(ev->supervision_timeout)); 5830 } 5831 5832 static void hci_le_ext_adv_term_evt(struct hci_dev *hdev, void *data, 5833 struct sk_buff *skb) 5834 { 5835 struct hci_evt_le_ext_adv_set_term *ev = data; 5836 struct hci_conn *conn; 5837 struct adv_info *adv, *n; 5838 5839 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 5840 5841 /* The Bluetooth Core 5.3 specification clearly states that this event 5842 * shall not be sent when the Host disables the advertising set. So in 5843 * case of HCI_ERROR_CANCELLED_BY_HOST, just ignore the event. 5844 * 5845 * When the Host disables an advertising set, all cleanup is done via 5846 * its command callback and not needed to be duplicated here. 5847 */ 5848 if (ev->status == HCI_ERROR_CANCELLED_BY_HOST) { 5849 bt_dev_warn_ratelimited(hdev, "Unexpected advertising set terminated event"); 5850 return; 5851 } 5852 5853 hci_dev_lock(hdev); 5854 5855 adv = hci_find_adv_instance(hdev, ev->handle); 5856 5857 if (ev->status) { 5858 if (!adv) 5859 goto unlock; 5860 5861 /* Remove advertising as it has been terminated */ 5862 hci_remove_adv_instance(hdev, ev->handle); 5863 mgmt_advertising_removed(NULL, hdev, ev->handle); 5864 5865 list_for_each_entry_safe(adv, n, &hdev->adv_instances, list) { 5866 if (adv->enabled) 5867 goto unlock; 5868 } 5869 5870 /* We are no longer advertising, clear HCI_LE_ADV */ 5871 hci_dev_clear_flag(hdev, HCI_LE_ADV); 5872 goto unlock; 5873 } 5874 5875 if (adv) 5876 adv->enabled = false; 5877 5878 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->conn_handle)); 5879 if (conn) { 5880 /* Store handle in the connection so the correct advertising 5881 * instance can be re-enabled when disconnected. 5882 */ 5883 conn->adv_instance = ev->handle; 5884 5885 if (hdev->adv_addr_type != ADDR_LE_DEV_RANDOM || 5886 bacmp(&conn->resp_addr, BDADDR_ANY)) 5887 goto unlock; 5888 5889 if (!ev->handle) { 5890 bacpy(&conn->resp_addr, &hdev->random_addr); 5891 goto unlock; 5892 } 5893 5894 if (adv) 5895 bacpy(&conn->resp_addr, &adv->random_addr); 5896 } 5897 5898 unlock: 5899 hci_dev_unlock(hdev); 5900 } 5901 5902 static void hci_le_conn_update_complete_evt(struct hci_dev *hdev, void *data, 5903 struct sk_buff *skb) 5904 { 5905 struct hci_ev_le_conn_update_complete *ev = data; 5906 struct hci_conn *conn; 5907 5908 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 5909 5910 if (ev->status) 5911 return; 5912 5913 hci_dev_lock(hdev); 5914 5915 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle)); 5916 if (conn) { 5917 conn->le_conn_interval = le16_to_cpu(ev->interval); 5918 conn->le_conn_latency = le16_to_cpu(ev->latency); 5919 conn->le_supv_timeout = le16_to_cpu(ev->supervision_timeout); 5920 } 5921 5922 hci_dev_unlock(hdev); 5923 } 5924 5925 /* This function requires the caller holds hdev->lock */ 5926 static struct hci_conn *check_pending_le_conn(struct hci_dev *hdev, 5927 bdaddr_t *addr, 5928 u8 addr_type, bool addr_resolved, 5929 u8 adv_type, u8 phy, u8 sec_phy) 5930 { 5931 struct hci_conn *conn; 5932 struct hci_conn_params *params; 5933 5934 /* If the event is not connectable don't proceed further */ 5935 if (adv_type != LE_ADV_IND && adv_type != LE_ADV_DIRECT_IND) 5936 return NULL; 5937 5938 /* Ignore if the device is blocked or hdev is suspended */ 5939 if (hci_bdaddr_list_lookup(&hdev->reject_list, addr, addr_type) || 5940 hdev->suspended) 5941 return NULL; 5942 5943 /* Most controller will fail if we try to create new connections 5944 * while we have an existing one in peripheral role. 5945 */ 5946 if (hdev->conn_hash.le_num_peripheral > 0 && 5947 (hci_test_quirk(hdev, HCI_QUIRK_BROKEN_LE_STATES) || 5948 !(hdev->le_states[3] & 0x10))) 5949 return NULL; 5950 5951 /* If we're not connectable only connect devices that we have in 5952 * our pend_le_conns list. 5953 */ 5954 params = hci_pend_le_action_lookup(&hdev->pend_le_conns, addr, 5955 addr_type); 5956 if (!params) 5957 return NULL; 5958 5959 if (!params->explicit_connect) { 5960 switch (params->auto_connect) { 5961 case HCI_AUTO_CONN_DIRECT: 5962 /* Only devices advertising with ADV_DIRECT_IND are 5963 * triggering a connection attempt. This is allowing 5964 * incoming connections from peripheral devices. 5965 */ 5966 if (adv_type != LE_ADV_DIRECT_IND) 5967 return NULL; 5968 break; 5969 case HCI_AUTO_CONN_ALWAYS: 5970 /* Devices advertising with ADV_IND or ADV_DIRECT_IND 5971 * are triggering a connection attempt. This means 5972 * that incoming connections from peripheral device are 5973 * accepted and also outgoing connections to peripheral 5974 * devices are established when found. 5975 */ 5976 break; 5977 default: 5978 return NULL; 5979 } 5980 } 5981 5982 conn = hci_connect_le(hdev, addr, addr_type, addr_resolved, 5983 BT_SECURITY_LOW, hdev->def_le_autoconnect_timeout, 5984 HCI_ROLE_MASTER, phy, sec_phy); 5985 if (!IS_ERR(conn)) { 5986 /* If HCI_AUTO_CONN_EXPLICIT is set, conn is already owned 5987 * by higher layer that tried to connect, if no then 5988 * store the pointer since we don't really have any 5989 * other owner of the object besides the params that 5990 * triggered it. This way we can abort the connection if 5991 * the parameters get removed and keep the reference 5992 * count consistent once the connection is established. 5993 */ 5994 5995 if (!params->explicit_connect) 5996 params->conn = hci_conn_get(conn); 5997 5998 return conn; 5999 } 6000 6001 switch (PTR_ERR(conn)) { 6002 case -EBUSY: 6003 /* If hci_connect() returns -EBUSY it means there is already 6004 * an LE connection attempt going on. Since controllers don't 6005 * support more than one connection attempt at the time, we 6006 * don't consider this an error case. 6007 */ 6008 break; 6009 default: 6010 BT_DBG("Failed to connect: err %ld", PTR_ERR(conn)); 6011 return NULL; 6012 } 6013 6014 return NULL; 6015 } 6016 6017 static void process_adv_report(struct hci_dev *hdev, u8 type, bdaddr_t *bdaddr, 6018 u8 bdaddr_type, bdaddr_t *direct_addr, 6019 u8 direct_addr_type, u8 phy, u8 sec_phy, s8 rssi, 6020 u8 *data, u8 len, bool ext_adv, bool ctl_time, 6021 u64 instant) 6022 { 6023 struct discovery_state *d = &hdev->discovery; 6024 struct smp_irk *irk; 6025 struct hci_conn *conn; 6026 bool match, bdaddr_resolved; 6027 u32 flags; 6028 u8 *ptr; 6029 6030 switch (type) { 6031 case LE_ADV_IND: 6032 case LE_ADV_DIRECT_IND: 6033 case LE_ADV_SCAN_IND: 6034 case LE_ADV_NONCONN_IND: 6035 case LE_ADV_SCAN_RSP: 6036 break; 6037 default: 6038 bt_dev_err_ratelimited(hdev, "unknown advertising packet " 6039 "type: 0x%02x", type); 6040 return; 6041 } 6042 6043 if (len > max_adv_len(hdev)) { 6044 bt_dev_err_ratelimited(hdev, 6045 "adv larger than maximum supported"); 6046 return; 6047 } 6048 6049 /* Find the end of the data in case the report contains padded zero 6050 * bytes at the end causing an invalid length value. 6051 * 6052 * When data is NULL, len is 0 so there is no need for extra ptr 6053 * check as 'ptr < data + 0' is already false in such case. 6054 */ 6055 for (ptr = data; ptr < data + len && *ptr; ptr += *ptr + 1) { 6056 if (ptr + 1 + *ptr > data + len) 6057 break; 6058 } 6059 6060 /* Adjust for actual length. This handles the case when remote 6061 * device is advertising with incorrect data length. 6062 */ 6063 len = ptr - data; 6064 6065 /* If the direct address is present, then this report is from 6066 * a LE Direct Advertising Report event. In that case it is 6067 * important to see if the address is matching the local 6068 * controller address. 6069 * 6070 * If local privacy is not enable the controller shall not be 6071 * generating such event since according to its documentation it is only 6072 * valid for filter_policy 0x02 and 0x03, but the fact that it did 6073 * generate LE Direct Advertising Report means it is probably broken and 6074 * won't generate any other event which can potentially break 6075 * auto-connect logic so in case local privacy is not enable this 6076 * ignores the direct_addr so it works as a regular report. 6077 */ 6078 if (!hci_dev_test_flag(hdev, HCI_MESH) && direct_addr && 6079 hci_dev_test_flag(hdev, HCI_PRIVACY)) { 6080 direct_addr_type = ev_bdaddr_type(hdev, direct_addr_type, 6081 &bdaddr_resolved); 6082 6083 /* Only resolvable random addresses are valid for these 6084 * kind of reports and others can be ignored. 6085 */ 6086 if (!hci_bdaddr_is_rpa(direct_addr, direct_addr_type)) 6087 return; 6088 6089 /* If the local IRK of the controller does not match 6090 * with the resolvable random address provided, then 6091 * this report can be ignored. 6092 */ 6093 if (!smp_irk_matches(hdev, hdev->irk, direct_addr)) 6094 return; 6095 } 6096 6097 /* Check if we need to convert to identity address */ 6098 irk = hci_get_irk(hdev, bdaddr, bdaddr_type); 6099 if (irk) { 6100 bdaddr = &irk->bdaddr; 6101 bdaddr_type = irk->addr_type; 6102 } 6103 6104 bdaddr_type = ev_bdaddr_type(hdev, bdaddr_type, &bdaddr_resolved); 6105 6106 /* Check if we have been requested to connect to this device. 6107 * 6108 * direct_addr is set only for directed advertising reports (it is NULL 6109 * for advertising reports) and is already verified to be RPA above. 6110 */ 6111 conn = check_pending_le_conn(hdev, bdaddr, bdaddr_type, bdaddr_resolved, 6112 type, phy, sec_phy); 6113 if (!ext_adv && conn && type == LE_ADV_IND && 6114 len <= max_adv_len(hdev)) { 6115 /* Store report for later inclusion by 6116 * mgmt_device_connected 6117 */ 6118 memcpy(conn->le_adv_data, data, len); 6119 conn->le_adv_data_len = len; 6120 } 6121 6122 if (type == LE_ADV_NONCONN_IND || type == LE_ADV_SCAN_IND) 6123 flags = MGMT_DEV_FOUND_NOT_CONNECTABLE; 6124 else 6125 flags = 0; 6126 6127 /* All scan results should be sent up for Mesh systems */ 6128 if (hci_dev_test_flag(hdev, HCI_MESH)) { 6129 mgmt_device_found(hdev, bdaddr, LE_LINK, bdaddr_type, NULL, 6130 rssi, flags, data, len, NULL, 0, instant); 6131 return; 6132 } 6133 6134 /* Passive scanning shouldn't trigger any device found events, 6135 * except for devices marked as CONN_REPORT for which we do send 6136 * device found events, or advertisement monitoring requested. 6137 */ 6138 if (hdev->le_scan_type == LE_SCAN_PASSIVE) { 6139 if (type == LE_ADV_DIRECT_IND) 6140 return; 6141 6142 if (!hci_pend_le_action_lookup(&hdev->pend_le_reports, 6143 bdaddr, bdaddr_type) && 6144 idr_is_empty(&hdev->adv_monitors_idr)) 6145 return; 6146 6147 mgmt_device_found(hdev, bdaddr, LE_LINK, bdaddr_type, NULL, 6148 rssi, flags, data, len, NULL, 0, 0); 6149 return; 6150 } 6151 6152 /* When receiving a scan response, then there is no way to 6153 * know if the remote device is connectable or not. However 6154 * since scan responses are merged with a previously seen 6155 * advertising report, the flags field from that report 6156 * will be used. 6157 * 6158 * In the unlikely case that a controller just sends a scan 6159 * response event that doesn't match the pending report, then 6160 * it is marked as a standalone SCAN_RSP. 6161 */ 6162 if (type == LE_ADV_SCAN_RSP) 6163 flags = MGMT_DEV_FOUND_SCAN_RSP; 6164 6165 /* If there's nothing pending either store the data from this 6166 * event or send an immediate device found event if the data 6167 * should not be stored for later. 6168 */ 6169 if (!has_pending_adv_report(hdev)) { 6170 /* If the report will trigger a SCAN_REQ store it for 6171 * later merging. 6172 */ 6173 if (!ext_adv && (type == LE_ADV_IND || 6174 type == LE_ADV_SCAN_IND)) { 6175 store_pending_adv_report(hdev, bdaddr, bdaddr_type, 6176 rssi, flags, data, len); 6177 return; 6178 } 6179 6180 mgmt_device_found(hdev, bdaddr, LE_LINK, bdaddr_type, NULL, 6181 rssi, flags, data, len, NULL, 0, 0); 6182 return; 6183 } 6184 6185 /* Check if the pending report is for the same device as the new one */ 6186 match = (!bacmp(bdaddr, &d->last_adv_addr) && 6187 bdaddr_type == d->last_adv_addr_type); 6188 6189 /* If the pending data doesn't match this report or this isn't a 6190 * scan response (e.g. we got a duplicate ADV_IND) then force 6191 * sending of the pending data. 6192 */ 6193 if (type != LE_ADV_SCAN_RSP || !match) { 6194 /* Send out whatever is in the cache, but skip duplicates */ 6195 if (!match) 6196 mgmt_device_found(hdev, &d->last_adv_addr, LE_LINK, 6197 d->last_adv_addr_type, NULL, 6198 d->last_adv_rssi, d->last_adv_flags, 6199 d->last_adv_data, 6200 d->last_adv_data_len, NULL, 0, 0); 6201 6202 /* If the new report will trigger a SCAN_REQ store it for 6203 * later merging. 6204 */ 6205 if (!ext_adv && (type == LE_ADV_IND || 6206 type == LE_ADV_SCAN_IND)) { 6207 store_pending_adv_report(hdev, bdaddr, bdaddr_type, 6208 rssi, flags, data, len); 6209 return; 6210 } 6211 6212 /* The advertising reports cannot be merged, so clear 6213 * the pending report and send out a device found event. 6214 */ 6215 clear_pending_adv_report(hdev); 6216 mgmt_device_found(hdev, bdaddr, LE_LINK, bdaddr_type, NULL, 6217 rssi, flags, data, len, NULL, 0, 0); 6218 return; 6219 } 6220 6221 /* If we get here we've got a pending ADV_IND or ADV_SCAN_IND and 6222 * the new event is a SCAN_RSP. We can therefore proceed with 6223 * sending a merged device found event. 6224 */ 6225 mgmt_device_found(hdev, &d->last_adv_addr, LE_LINK, 6226 d->last_adv_addr_type, NULL, rssi, d->last_adv_flags, 6227 d->last_adv_data, d->last_adv_data_len, data, len, 0); 6228 clear_pending_adv_report(hdev); 6229 } 6230 6231 static void hci_le_adv_report_evt(struct hci_dev *hdev, void *data, 6232 struct sk_buff *skb) 6233 { 6234 struct hci_ev_le_advertising_report *ev = data; 6235 u64 instant = jiffies; 6236 6237 if (!ev->num) 6238 return; 6239 6240 hci_dev_lock(hdev); 6241 6242 while (ev->num--) { 6243 struct hci_ev_le_advertising_info *info; 6244 s8 rssi; 6245 6246 info = hci_le_ev_skb_pull(hdev, skb, 6247 HCI_EV_LE_ADVERTISING_REPORT, 6248 sizeof(*info)); 6249 if (!info) 6250 break; 6251 6252 if (!hci_le_ev_skb_pull(hdev, skb, HCI_EV_LE_ADVERTISING_REPORT, 6253 info->length + 1)) 6254 break; 6255 6256 if (info->length <= max_adv_len(hdev)) { 6257 rssi = info->data[info->length]; 6258 process_adv_report(hdev, info->type, &info->bdaddr, 6259 info->bdaddr_type, NULL, 0, 6260 HCI_ADV_PHY_1M, 0, rssi, 6261 info->data, info->length, false, 6262 false, instant); 6263 } else { 6264 bt_dev_err(hdev, "Dropping invalid advertising data"); 6265 } 6266 } 6267 6268 hci_dev_unlock(hdev); 6269 } 6270 6271 static u8 ext_evt_type_to_legacy(struct hci_dev *hdev, u16 evt_type) 6272 { 6273 u16 pdu_type = evt_type & ~LE_EXT_ADV_DATA_STATUS_MASK; 6274 6275 if (!pdu_type) 6276 return LE_ADV_NONCONN_IND; 6277 6278 if (evt_type & LE_EXT_ADV_LEGACY_PDU) { 6279 switch (evt_type) { 6280 case LE_LEGACY_ADV_IND: 6281 return LE_ADV_IND; 6282 case LE_LEGACY_ADV_DIRECT_IND: 6283 return LE_ADV_DIRECT_IND; 6284 case LE_LEGACY_ADV_SCAN_IND: 6285 return LE_ADV_SCAN_IND; 6286 case LE_LEGACY_NONCONN_IND: 6287 return LE_ADV_NONCONN_IND; 6288 case LE_LEGACY_SCAN_RSP_ADV: 6289 case LE_LEGACY_SCAN_RSP_ADV_SCAN: 6290 return LE_ADV_SCAN_RSP; 6291 } 6292 6293 goto invalid; 6294 } 6295 6296 if (evt_type & LE_EXT_ADV_CONN_IND) { 6297 if (evt_type & LE_EXT_ADV_DIRECT_IND) 6298 return LE_ADV_DIRECT_IND; 6299 6300 return LE_ADV_IND; 6301 } 6302 6303 if (evt_type & LE_EXT_ADV_SCAN_RSP) 6304 return LE_ADV_SCAN_RSP; 6305 6306 if (evt_type & LE_EXT_ADV_SCAN_IND) 6307 return LE_ADV_SCAN_IND; 6308 6309 if (evt_type & LE_EXT_ADV_DIRECT_IND) 6310 return LE_ADV_NONCONN_IND; 6311 6312 invalid: 6313 bt_dev_err_ratelimited(hdev, "Unknown advertising packet type: 0x%02x", 6314 evt_type); 6315 6316 return LE_ADV_INVALID; 6317 } 6318 6319 static void hci_le_ext_adv_report_evt(struct hci_dev *hdev, void *data, 6320 struct sk_buff *skb) 6321 { 6322 struct hci_ev_le_ext_adv_report *ev = data; 6323 u64 instant = jiffies; 6324 6325 if (!ev->num) 6326 return; 6327 6328 hci_dev_lock(hdev); 6329 6330 while (ev->num--) { 6331 struct hci_ev_le_ext_adv_info *info; 6332 u8 legacy_evt_type; 6333 u16 evt_type; 6334 6335 info = hci_le_ev_skb_pull(hdev, skb, HCI_EV_LE_EXT_ADV_REPORT, 6336 sizeof(*info)); 6337 if (!info) 6338 break; 6339 6340 if (!hci_le_ev_skb_pull(hdev, skb, HCI_EV_LE_EXT_ADV_REPORT, 6341 info->length)) 6342 break; 6343 6344 evt_type = __le16_to_cpu(info->type) & LE_EXT_ADV_EVT_TYPE_MASK; 6345 legacy_evt_type = ext_evt_type_to_legacy(hdev, evt_type); 6346 6347 if (hci_test_quirk(hdev, 6348 HCI_QUIRK_FIXUP_LE_EXT_ADV_REPORT_PHY)) { 6349 info->primary_phy &= 0x1f; 6350 info->secondary_phy &= 0x1f; 6351 } 6352 6353 /* Check if PA Sync is pending and if the hci_conn SID has not 6354 * been set update it. 6355 */ 6356 if (hci_dev_test_flag(hdev, HCI_PA_SYNC)) { 6357 struct hci_conn *conn; 6358 6359 conn = hci_conn_hash_lookup_create_pa_sync(hdev); 6360 if (conn && conn->sid == HCI_SID_INVALID) 6361 conn->sid = info->sid; 6362 } 6363 6364 if (legacy_evt_type != LE_ADV_INVALID) { 6365 process_adv_report(hdev, legacy_evt_type, &info->bdaddr, 6366 info->bdaddr_type, NULL, 0, 6367 info->primary_phy, 6368 info->secondary_phy, 6369 info->rssi, info->data, info->length, 6370 !(evt_type & LE_EXT_ADV_LEGACY_PDU), 6371 false, instant); 6372 } 6373 } 6374 6375 hci_dev_unlock(hdev); 6376 } 6377 6378 static int hci_le_pa_term_sync(struct hci_dev *hdev, __le16 handle) 6379 { 6380 struct hci_cp_le_pa_term_sync cp; 6381 6382 memset(&cp, 0, sizeof(cp)); 6383 cp.handle = handle; 6384 6385 return hci_send_cmd(hdev, HCI_OP_LE_PA_TERM_SYNC, sizeof(cp), &cp); 6386 } 6387 6388 static void hci_le_pa_sync_established_evt(struct hci_dev *hdev, void *data, 6389 struct sk_buff *skb) 6390 { 6391 struct hci_ev_le_pa_sync_established *ev = data; 6392 int mask = hdev->link_mode; 6393 __u8 flags = 0; 6394 struct hci_conn *pa_sync, *conn; 6395 6396 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 6397 6398 hci_dev_lock(hdev); 6399 6400 hci_dev_clear_flag(hdev, HCI_PA_SYNC); 6401 6402 conn = hci_conn_hash_lookup_create_pa_sync(hdev); 6403 if (!conn) { 6404 bt_dev_err(hdev, 6405 "Unable to find connection for dst %pMR sid 0x%2.2x", 6406 &ev->bdaddr, ev->sid); 6407 goto unlock; 6408 } 6409 6410 clear_bit(HCI_CONN_CREATE_PA_SYNC, &conn->flags); 6411 6412 conn->sync_handle = le16_to_cpu(ev->handle); 6413 conn->sid = HCI_SID_INVALID; 6414 6415 mask |= hci_proto_connect_ind(hdev, &ev->bdaddr, PA_LINK, 6416 &flags); 6417 if (!(mask & HCI_LM_ACCEPT)) { 6418 hci_le_pa_term_sync(hdev, ev->handle); 6419 goto unlock; 6420 } 6421 6422 if (!(flags & HCI_PROTO_DEFER)) 6423 goto unlock; 6424 6425 /* Add connection to indicate PA sync event */ 6426 pa_sync = hci_conn_add_unset(hdev, PA_LINK, BDADDR_ANY, 6427 HCI_ROLE_SLAVE); 6428 6429 if (IS_ERR(pa_sync)) 6430 goto unlock; 6431 6432 pa_sync->sync_handle = le16_to_cpu(ev->handle); 6433 6434 if (ev->status) { 6435 set_bit(HCI_CONN_PA_SYNC_FAILED, &pa_sync->flags); 6436 6437 /* Notify iso layer */ 6438 hci_connect_cfm(pa_sync, ev->status); 6439 } 6440 6441 unlock: 6442 hci_dev_unlock(hdev); 6443 } 6444 6445 static void hci_le_per_adv_report_evt(struct hci_dev *hdev, void *data, 6446 struct sk_buff *skb) 6447 { 6448 struct hci_ev_le_per_adv_report *ev = data; 6449 int mask = hdev->link_mode; 6450 __u8 flags = 0; 6451 struct hci_conn *pa_sync; 6452 6453 bt_dev_dbg(hdev, "sync_handle 0x%4.4x", le16_to_cpu(ev->sync_handle)); 6454 6455 hci_dev_lock(hdev); 6456 6457 mask |= hci_proto_connect_ind(hdev, BDADDR_ANY, PA_LINK, &flags); 6458 if (!(mask & HCI_LM_ACCEPT)) 6459 goto unlock; 6460 6461 if (!(flags & HCI_PROTO_DEFER)) 6462 goto unlock; 6463 6464 pa_sync = hci_conn_hash_lookup_pa_sync_handle 6465 (hdev, 6466 le16_to_cpu(ev->sync_handle)); 6467 6468 if (!pa_sync) 6469 goto unlock; 6470 6471 if (ev->data_status == LE_PA_DATA_COMPLETE && 6472 !test_and_set_bit(HCI_CONN_PA_SYNC, &pa_sync->flags)) { 6473 /* Notify iso layer */ 6474 hci_connect_cfm(pa_sync, 0); 6475 6476 /* Notify MGMT layer */ 6477 mgmt_device_connected(hdev, pa_sync, NULL, 0); 6478 } 6479 6480 unlock: 6481 hci_dev_unlock(hdev); 6482 } 6483 6484 static void hci_le_remote_feat_complete_evt(struct hci_dev *hdev, void *data, 6485 struct sk_buff *skb) 6486 { 6487 struct hci_ev_le_remote_feat_complete *ev = data; 6488 struct hci_conn *conn; 6489 6490 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 6491 6492 hci_dev_lock(hdev); 6493 6494 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle)); 6495 if (conn) { 6496 if (!ev->status) 6497 memcpy(conn->features[0], ev->features, 8); 6498 6499 if (conn->state == BT_CONFIG) { 6500 __u8 status; 6501 6502 /* If the local controller supports peripheral-initiated 6503 * features exchange, but the remote controller does 6504 * not, then it is possible that the error code 0x1a 6505 * for unsupported remote feature gets returned. 6506 * 6507 * In this specific case, allow the connection to 6508 * transition into connected state and mark it as 6509 * successful. 6510 */ 6511 if (!conn->out && ev->status == HCI_ERROR_UNSUPPORTED_REMOTE_FEATURE && 6512 (hdev->le_features[0] & HCI_LE_PERIPHERAL_FEATURES)) 6513 status = 0x00; 6514 else 6515 status = ev->status; 6516 6517 conn->state = BT_CONNECTED; 6518 hci_connect_cfm(conn, status); 6519 hci_conn_drop(conn); 6520 } 6521 } 6522 6523 hci_dev_unlock(hdev); 6524 } 6525 6526 static void hci_le_ltk_request_evt(struct hci_dev *hdev, void *data, 6527 struct sk_buff *skb) 6528 { 6529 struct hci_ev_le_ltk_req *ev = data; 6530 struct hci_cp_le_ltk_reply cp; 6531 struct hci_cp_le_ltk_neg_reply neg; 6532 struct hci_conn *conn; 6533 struct smp_ltk *ltk; 6534 6535 bt_dev_dbg(hdev, "handle 0x%4.4x", __le16_to_cpu(ev->handle)); 6536 6537 hci_dev_lock(hdev); 6538 6539 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle)); 6540 if (conn == NULL) 6541 goto not_found; 6542 6543 ltk = hci_find_ltk(hdev, &conn->dst, conn->dst_type, conn->role); 6544 if (!ltk) 6545 goto not_found; 6546 6547 if (smp_ltk_is_sc(ltk)) { 6548 /* With SC both EDiv and Rand are set to zero */ 6549 if (ev->ediv || ev->rand) 6550 goto not_found; 6551 } else { 6552 /* For non-SC keys check that EDiv and Rand match */ 6553 if (ev->ediv != ltk->ediv || ev->rand != ltk->rand) 6554 goto not_found; 6555 } 6556 6557 memcpy(cp.ltk, ltk->val, ltk->enc_size); 6558 memset(cp.ltk + ltk->enc_size, 0, sizeof(cp.ltk) - ltk->enc_size); 6559 cp.handle = cpu_to_le16(conn->handle); 6560 6561 conn->pending_sec_level = smp_ltk_sec_level(ltk); 6562 6563 conn->enc_key_size = ltk->enc_size; 6564 6565 hci_send_cmd(hdev, HCI_OP_LE_LTK_REPLY, sizeof(cp), &cp); 6566 6567 /* Ref. Bluetooth Core SPEC pages 1975 and 2004. STK is a 6568 * temporary key used to encrypt a connection following 6569 * pairing. It is used during the Encrypted Session Setup to 6570 * distribute the keys. Later, security can be re-established 6571 * using a distributed LTK. 6572 */ 6573 if (ltk->type == SMP_STK) { 6574 set_bit(HCI_CONN_STK_ENCRYPT, &conn->flags); 6575 list_del_rcu(<k->list); 6576 kfree_rcu(ltk, rcu); 6577 } else { 6578 clear_bit(HCI_CONN_STK_ENCRYPT, &conn->flags); 6579 } 6580 6581 hci_dev_unlock(hdev); 6582 6583 return; 6584 6585 not_found: 6586 neg.handle = ev->handle; 6587 hci_send_cmd(hdev, HCI_OP_LE_LTK_NEG_REPLY, sizeof(neg), &neg); 6588 hci_dev_unlock(hdev); 6589 } 6590 6591 static void send_conn_param_neg_reply(struct hci_dev *hdev, u16 handle, 6592 u8 reason) 6593 { 6594 struct hci_cp_le_conn_param_req_neg_reply cp; 6595 6596 cp.handle = cpu_to_le16(handle); 6597 cp.reason = reason; 6598 6599 hci_send_cmd(hdev, HCI_OP_LE_CONN_PARAM_REQ_NEG_REPLY, sizeof(cp), 6600 &cp); 6601 } 6602 6603 static void hci_le_remote_conn_param_req_evt(struct hci_dev *hdev, void *data, 6604 struct sk_buff *skb) 6605 { 6606 struct hci_ev_le_remote_conn_param_req *ev = data; 6607 struct hci_cp_le_conn_param_req_reply cp; 6608 struct hci_conn *hcon; 6609 u16 handle, min, max, latency, timeout; 6610 6611 bt_dev_dbg(hdev, "handle 0x%4.4x", __le16_to_cpu(ev->handle)); 6612 6613 handle = le16_to_cpu(ev->handle); 6614 min = le16_to_cpu(ev->interval_min); 6615 max = le16_to_cpu(ev->interval_max); 6616 latency = le16_to_cpu(ev->latency); 6617 timeout = le16_to_cpu(ev->timeout); 6618 6619 hcon = hci_conn_hash_lookup_handle(hdev, handle); 6620 if (!hcon || hcon->state != BT_CONNECTED) 6621 return send_conn_param_neg_reply(hdev, handle, 6622 HCI_ERROR_UNKNOWN_CONN_ID); 6623 6624 if (max > hcon->le_conn_max_interval) 6625 return send_conn_param_neg_reply(hdev, handle, 6626 HCI_ERROR_INVALID_LL_PARAMS); 6627 6628 if (hci_check_conn_params(min, max, latency, timeout)) 6629 return send_conn_param_neg_reply(hdev, handle, 6630 HCI_ERROR_INVALID_LL_PARAMS); 6631 6632 if (hcon->role == HCI_ROLE_MASTER) { 6633 struct hci_conn_params *params; 6634 u8 store_hint; 6635 6636 hci_dev_lock(hdev); 6637 6638 params = hci_conn_params_lookup(hdev, &hcon->dst, 6639 hcon->dst_type); 6640 if (params) { 6641 params->conn_min_interval = min; 6642 params->conn_max_interval = max; 6643 params->conn_latency = latency; 6644 params->supervision_timeout = timeout; 6645 store_hint = 0x01; 6646 } else { 6647 store_hint = 0x00; 6648 } 6649 6650 hci_dev_unlock(hdev); 6651 6652 mgmt_new_conn_param(hdev, &hcon->dst, hcon->dst_type, 6653 store_hint, min, max, latency, timeout); 6654 } 6655 6656 cp.handle = ev->handle; 6657 cp.interval_min = ev->interval_min; 6658 cp.interval_max = ev->interval_max; 6659 cp.latency = ev->latency; 6660 cp.timeout = ev->timeout; 6661 cp.min_ce_len = 0; 6662 cp.max_ce_len = 0; 6663 6664 hci_send_cmd(hdev, HCI_OP_LE_CONN_PARAM_REQ_REPLY, sizeof(cp), &cp); 6665 } 6666 6667 static void hci_le_direct_adv_report_evt(struct hci_dev *hdev, void *data, 6668 struct sk_buff *skb) 6669 { 6670 struct hci_ev_le_direct_adv_report *ev = data; 6671 u64 instant = jiffies; 6672 int i; 6673 6674 if (!hci_le_ev_skb_pull(hdev, skb, HCI_EV_LE_DIRECT_ADV_REPORT, 6675 flex_array_size(ev, info, ev->num))) 6676 return; 6677 6678 if (!ev->num) 6679 return; 6680 6681 hci_dev_lock(hdev); 6682 6683 for (i = 0; i < ev->num; i++) { 6684 struct hci_ev_le_direct_adv_info *info = &ev->info[i]; 6685 6686 process_adv_report(hdev, info->type, &info->bdaddr, 6687 info->bdaddr_type, &info->direct_addr, 6688 info->direct_addr_type, HCI_ADV_PHY_1M, 0, 6689 info->rssi, NULL, 0, false, false, instant); 6690 } 6691 6692 hci_dev_unlock(hdev); 6693 } 6694 6695 static void hci_le_phy_update_evt(struct hci_dev *hdev, void *data, 6696 struct sk_buff *skb) 6697 { 6698 struct hci_ev_le_phy_update_complete *ev = data; 6699 struct hci_conn *conn; 6700 6701 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 6702 6703 if (ev->status) 6704 return; 6705 6706 hci_dev_lock(hdev); 6707 6708 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle)); 6709 if (!conn) 6710 goto unlock; 6711 6712 conn->le_tx_phy = ev->tx_phy; 6713 conn->le_rx_phy = ev->rx_phy; 6714 6715 unlock: 6716 hci_dev_unlock(hdev); 6717 } 6718 6719 static void hci_le_cis_established_evt(struct hci_dev *hdev, void *data, 6720 struct sk_buff *skb) 6721 { 6722 struct hci_evt_le_cis_established *ev = data; 6723 struct hci_conn *conn; 6724 struct bt_iso_qos *qos; 6725 bool pending = false; 6726 u16 handle = __le16_to_cpu(ev->handle); 6727 u32 c_sdu_interval, p_sdu_interval; 6728 6729 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 6730 6731 hci_dev_lock(hdev); 6732 6733 conn = hci_conn_hash_lookup_handle(hdev, handle); 6734 if (!conn) { 6735 bt_dev_err(hdev, 6736 "Unable to find connection with handle 0x%4.4x", 6737 handle); 6738 goto unlock; 6739 } 6740 6741 if (conn->type != CIS_LINK) { 6742 bt_dev_err(hdev, 6743 "Invalid connection link type handle 0x%4.4x", 6744 handle); 6745 goto unlock; 6746 } 6747 6748 qos = &conn->iso_qos; 6749 6750 pending = test_and_clear_bit(HCI_CONN_CREATE_CIS, &conn->flags); 6751 6752 /* BLUETOOTH CORE SPECIFICATION Version 5.4 | Vol 6, Part G 6753 * page 3075: 6754 * Transport_Latency_C_To_P = CIG_Sync_Delay + (FT_C_To_P) × 6755 * ISO_Interval + SDU_Interval_C_To_P 6756 * ... 6757 * SDU_Interval = (CIG_Sync_Delay + (FT) x ISO_Interval) - 6758 * Transport_Latency 6759 */ 6760 c_sdu_interval = (get_unaligned_le24(ev->cig_sync_delay) + 6761 (ev->c_ft * le16_to_cpu(ev->interval) * 1250)) - 6762 get_unaligned_le24(ev->c_latency); 6763 p_sdu_interval = (get_unaligned_le24(ev->cig_sync_delay) + 6764 (ev->p_ft * le16_to_cpu(ev->interval) * 1250)) - 6765 get_unaligned_le24(ev->p_latency); 6766 6767 switch (conn->role) { 6768 case HCI_ROLE_SLAVE: 6769 qos->ucast.in.interval = c_sdu_interval; 6770 qos->ucast.out.interval = p_sdu_interval; 6771 /* Convert Transport Latency (us) to Latency (msec) */ 6772 qos->ucast.in.latency = 6773 DIV_ROUND_CLOSEST(get_unaligned_le24(ev->c_latency), 6774 1000); 6775 qos->ucast.out.latency = 6776 DIV_ROUND_CLOSEST(get_unaligned_le24(ev->p_latency), 6777 1000); 6778 qos->ucast.in.sdu = ev->c_bn ? le16_to_cpu(ev->c_mtu) : 0; 6779 qos->ucast.out.sdu = ev->p_bn ? le16_to_cpu(ev->p_mtu) : 0; 6780 qos->ucast.in.phy = ev->c_phy; 6781 qos->ucast.out.phy = ev->p_phy; 6782 break; 6783 case HCI_ROLE_MASTER: 6784 qos->ucast.in.interval = p_sdu_interval; 6785 qos->ucast.out.interval = c_sdu_interval; 6786 /* Convert Transport Latency (us) to Latency (msec) */ 6787 qos->ucast.out.latency = 6788 DIV_ROUND_CLOSEST(get_unaligned_le24(ev->c_latency), 6789 1000); 6790 qos->ucast.in.latency = 6791 DIV_ROUND_CLOSEST(get_unaligned_le24(ev->p_latency), 6792 1000); 6793 qos->ucast.out.sdu = ev->c_bn ? le16_to_cpu(ev->c_mtu) : 0; 6794 qos->ucast.in.sdu = ev->p_bn ? le16_to_cpu(ev->p_mtu) : 0; 6795 qos->ucast.out.phy = ev->c_phy; 6796 qos->ucast.in.phy = ev->p_phy; 6797 break; 6798 } 6799 6800 if (!ev->status) { 6801 conn->state = BT_CONNECTED; 6802 hci_debugfs_create_conn(conn); 6803 hci_conn_add_sysfs(conn); 6804 hci_iso_setup_path(conn); 6805 goto unlock; 6806 } 6807 6808 conn->state = BT_CLOSED; 6809 hci_connect_cfm(conn, ev->status); 6810 hci_conn_del(conn); 6811 6812 unlock: 6813 if (pending) 6814 hci_le_create_cis_pending(hdev); 6815 6816 hci_dev_unlock(hdev); 6817 } 6818 6819 static void hci_le_reject_cis(struct hci_dev *hdev, __le16 handle) 6820 { 6821 struct hci_cp_le_reject_cis cp; 6822 6823 memset(&cp, 0, sizeof(cp)); 6824 cp.handle = handle; 6825 cp.reason = HCI_ERROR_REJ_BAD_ADDR; 6826 hci_send_cmd(hdev, HCI_OP_LE_REJECT_CIS, sizeof(cp), &cp); 6827 } 6828 6829 static void hci_le_accept_cis(struct hci_dev *hdev, __le16 handle) 6830 { 6831 struct hci_cp_le_accept_cis cp; 6832 6833 memset(&cp, 0, sizeof(cp)); 6834 cp.handle = handle; 6835 hci_send_cmd(hdev, HCI_OP_LE_ACCEPT_CIS, sizeof(cp), &cp); 6836 } 6837 6838 static void hci_le_cis_req_evt(struct hci_dev *hdev, void *data, 6839 struct sk_buff *skb) 6840 { 6841 struct hci_evt_le_cis_req *ev = data; 6842 u16 acl_handle, cis_handle; 6843 struct hci_conn *acl, *cis; 6844 int mask; 6845 __u8 flags = 0; 6846 6847 acl_handle = __le16_to_cpu(ev->acl_handle); 6848 cis_handle = __le16_to_cpu(ev->cis_handle); 6849 6850 bt_dev_dbg(hdev, "acl 0x%4.4x handle 0x%4.4x cig 0x%2.2x cis 0x%2.2x", 6851 acl_handle, cis_handle, ev->cig_id, ev->cis_id); 6852 6853 hci_dev_lock(hdev); 6854 6855 acl = hci_conn_hash_lookup_handle(hdev, acl_handle); 6856 if (!acl) 6857 goto unlock; 6858 6859 mask = hci_proto_connect_ind(hdev, &acl->dst, CIS_LINK, &flags); 6860 if (!(mask & HCI_LM_ACCEPT)) { 6861 hci_le_reject_cis(hdev, ev->cis_handle); 6862 goto unlock; 6863 } 6864 6865 cis = hci_conn_hash_lookup_handle(hdev, cis_handle); 6866 if (!cis) { 6867 cis = hci_conn_add(hdev, CIS_LINK, &acl->dst, 6868 HCI_ROLE_SLAVE, cis_handle); 6869 if (IS_ERR(cis)) { 6870 hci_le_reject_cis(hdev, ev->cis_handle); 6871 goto unlock; 6872 } 6873 } 6874 6875 cis->iso_qos.ucast.cig = ev->cig_id; 6876 cis->iso_qos.ucast.cis = ev->cis_id; 6877 6878 if (!(flags & HCI_PROTO_DEFER)) { 6879 hci_le_accept_cis(hdev, ev->cis_handle); 6880 } else { 6881 cis->state = BT_CONNECT2; 6882 hci_connect_cfm(cis, 0); 6883 } 6884 6885 unlock: 6886 hci_dev_unlock(hdev); 6887 } 6888 6889 static int hci_iso_term_big_sync(struct hci_dev *hdev, void *data) 6890 { 6891 u8 handle = PTR_UINT(data); 6892 6893 return hci_le_terminate_big_sync(hdev, handle, 6894 HCI_ERROR_LOCAL_HOST_TERM); 6895 } 6896 6897 static void hci_le_create_big_complete_evt(struct hci_dev *hdev, void *data, 6898 struct sk_buff *skb) 6899 { 6900 struct hci_evt_le_create_big_complete *ev = data; 6901 struct hci_conn *conn; 6902 __u8 i = 0; 6903 6904 BT_DBG("%s status 0x%2.2x", hdev->name, ev->status); 6905 6906 if (!hci_le_ev_skb_pull(hdev, skb, HCI_EVT_LE_CREATE_BIG_COMPLETE, 6907 flex_array_size(ev, bis_handle, ev->num_bis))) 6908 return; 6909 6910 hci_dev_lock(hdev); 6911 6912 /* Connect all BISes that are bound to the BIG */ 6913 while ((conn = hci_conn_hash_lookup_big_state(hdev, ev->handle, 6914 BT_BOUND, 6915 HCI_ROLE_MASTER))) { 6916 if (ev->status) { 6917 hci_connect_cfm(conn, ev->status); 6918 hci_conn_del(conn); 6919 continue; 6920 } 6921 6922 if (hci_conn_set_handle(conn, 6923 __le16_to_cpu(ev->bis_handle[i++]))) 6924 continue; 6925 6926 conn->state = BT_CONNECTED; 6927 set_bit(HCI_CONN_BIG_CREATED, &conn->flags); 6928 hci_debugfs_create_conn(conn); 6929 hci_conn_add_sysfs(conn); 6930 hci_iso_setup_path(conn); 6931 } 6932 6933 if (!ev->status && !i) 6934 /* If no BISes have been connected for the BIG, 6935 * terminate. This is in case all bound connections 6936 * have been closed before the BIG creation 6937 * has completed. 6938 */ 6939 hci_cmd_sync_queue(hdev, hci_iso_term_big_sync, 6940 UINT_PTR(ev->handle), NULL); 6941 6942 hci_dev_unlock(hdev); 6943 } 6944 6945 static void hci_le_big_sync_established_evt(struct hci_dev *hdev, void *data, 6946 struct sk_buff *skb) 6947 { 6948 struct hci_evt_le_big_sync_established *ev = data; 6949 struct hci_conn *bis, *conn; 6950 int i; 6951 6952 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 6953 6954 if (!hci_le_ev_skb_pull(hdev, skb, HCI_EVT_LE_BIG_SYNC_ESTABLISHED, 6955 flex_array_size(ev, bis, ev->num_bis))) 6956 return; 6957 6958 hci_dev_lock(hdev); 6959 6960 conn = hci_conn_hash_lookup_big_sync_pend(hdev, ev->handle, 6961 ev->num_bis); 6962 if (!conn) { 6963 bt_dev_err(hdev, 6964 "Unable to find connection for big 0x%2.2x", 6965 ev->handle); 6966 goto unlock; 6967 } 6968 6969 clear_bit(HCI_CONN_CREATE_BIG_SYNC, &conn->flags); 6970 6971 conn->num_bis = 0; 6972 memset(conn->bis, 0, sizeof(conn->num_bis)); 6973 6974 for (i = 0; i < ev->num_bis; i++) { 6975 u16 handle = le16_to_cpu(ev->bis[i]); 6976 __le32 interval; 6977 6978 bis = hci_conn_hash_lookup_handle(hdev, handle); 6979 if (!bis) { 6980 if (handle > HCI_CONN_HANDLE_MAX) { 6981 bt_dev_dbg(hdev, "ignore too large handle %u", handle); 6982 continue; 6983 } 6984 bis = hci_conn_add(hdev, BIS_LINK, BDADDR_ANY, 6985 HCI_ROLE_SLAVE, handle); 6986 if (IS_ERR(bis)) 6987 continue; 6988 } 6989 6990 if (ev->status != 0x42) { 6991 /* Mark PA sync as established */ 6992 set_bit(HCI_CONN_PA_SYNC, &bis->flags); 6993 /* Reset cleanup callback of PA Sync so it doesn't 6994 * terminate the sync when deleting the connection. 6995 */ 6996 conn->cleanup = NULL; 6997 } 6998 6999 bis->sync_handle = conn->sync_handle; 7000 bis->iso_qos.bcast.big = ev->handle; 7001 memset(&interval, 0, sizeof(interval)); 7002 memcpy(&interval, ev->latency, sizeof(ev->latency)); 7003 bis->iso_qos.bcast.in.interval = le32_to_cpu(interval); 7004 /* Convert ISO Interval (1.25 ms slots) to latency (ms) */ 7005 bis->iso_qos.bcast.in.latency = le16_to_cpu(ev->interval) * 125 / 100; 7006 bis->iso_qos.bcast.in.sdu = le16_to_cpu(ev->max_pdu); 7007 7008 if (!ev->status) { 7009 bis->state = BT_CONNECTED; 7010 set_bit(HCI_CONN_BIG_SYNC, &bis->flags); 7011 hci_debugfs_create_conn(bis); 7012 hci_conn_add_sysfs(bis); 7013 hci_iso_setup_path(bis); 7014 } 7015 } 7016 7017 /* In case BIG sync failed, notify each failed connection to 7018 * the user after all hci connections have been added 7019 */ 7020 if (ev->status) 7021 for (i = 0; i < ev->num_bis; i++) { 7022 u16 handle = le16_to_cpu(ev->bis[i]); 7023 7024 bis = hci_conn_hash_lookup_handle(hdev, handle); 7025 if (!bis) 7026 continue; 7027 7028 set_bit(HCI_CONN_BIG_SYNC_FAILED, &bis->flags); 7029 hci_connect_cfm(bis, ev->status); 7030 } 7031 7032 unlock: 7033 hci_dev_unlock(hdev); 7034 } 7035 7036 static void hci_le_big_sync_lost_evt(struct hci_dev *hdev, void *data, 7037 struct sk_buff *skb) 7038 { 7039 struct hci_evt_le_big_sync_lost *ev = data; 7040 struct hci_conn *bis, *conn; 7041 bool mgmt_conn; 7042 7043 bt_dev_dbg(hdev, "big handle 0x%2.2x", ev->handle); 7044 7045 hci_dev_lock(hdev); 7046 7047 /* Delete the pa sync connection */ 7048 bis = hci_conn_hash_lookup_pa_sync_big_handle(hdev, ev->handle); 7049 if (bis) { 7050 conn = hci_conn_hash_lookup_pa_sync_handle(hdev, 7051 bis->sync_handle); 7052 if (conn) 7053 hci_conn_del(conn); 7054 } 7055 7056 /* Delete each bis connection */ 7057 while ((bis = hci_conn_hash_lookup_big_state(hdev, ev->handle, 7058 BT_CONNECTED, 7059 HCI_ROLE_SLAVE))) { 7060 mgmt_conn = test_and_clear_bit(HCI_CONN_MGMT_CONNECTED, &bis->flags); 7061 mgmt_device_disconnected(hdev, &bis->dst, bis->type, bis->dst_type, 7062 ev->reason, mgmt_conn); 7063 7064 clear_bit(HCI_CONN_BIG_SYNC, &bis->flags); 7065 hci_disconn_cfm(bis, ev->reason); 7066 hci_conn_del(bis); 7067 } 7068 7069 hci_dev_unlock(hdev); 7070 } 7071 7072 static void hci_le_big_info_adv_report_evt(struct hci_dev *hdev, void *data, 7073 struct sk_buff *skb) 7074 { 7075 struct hci_evt_le_big_info_adv_report *ev = data; 7076 int mask = hdev->link_mode; 7077 __u8 flags = 0; 7078 struct hci_conn *pa_sync; 7079 7080 bt_dev_dbg(hdev, "sync_handle 0x%4.4x", le16_to_cpu(ev->sync_handle)); 7081 7082 hci_dev_lock(hdev); 7083 7084 mask |= hci_proto_connect_ind(hdev, BDADDR_ANY, BIS_LINK, &flags); 7085 if (!(mask & HCI_LM_ACCEPT)) 7086 goto unlock; 7087 7088 if (!(flags & HCI_PROTO_DEFER)) 7089 goto unlock; 7090 7091 pa_sync = hci_conn_hash_lookup_pa_sync_handle 7092 (hdev, 7093 le16_to_cpu(ev->sync_handle)); 7094 7095 if (!pa_sync) 7096 goto unlock; 7097 7098 pa_sync->iso_qos.bcast.encryption = ev->encryption; 7099 7100 /* Notify iso layer */ 7101 hci_connect_cfm(pa_sync, 0); 7102 7103 unlock: 7104 hci_dev_unlock(hdev); 7105 } 7106 7107 #define HCI_LE_EV_VL(_op, _func, _min_len, _max_len) \ 7108 [_op] = { \ 7109 .func = _func, \ 7110 .min_len = _min_len, \ 7111 .max_len = _max_len, \ 7112 } 7113 7114 #define HCI_LE_EV(_op, _func, _len) \ 7115 HCI_LE_EV_VL(_op, _func, _len, _len) 7116 7117 #define HCI_LE_EV_STATUS(_op, _func) \ 7118 HCI_LE_EV(_op, _func, sizeof(struct hci_ev_status)) 7119 7120 /* Entries in this table shall have their position according to the subevent 7121 * opcode they handle so the use of the macros above is recommend since it does 7122 * attempt to initialize at its proper index using Designated Initializers that 7123 * way events without a callback function can be omitted. 7124 */ 7125 static const struct hci_le_ev { 7126 void (*func)(struct hci_dev *hdev, void *data, struct sk_buff *skb); 7127 u16 min_len; 7128 u16 max_len; 7129 } hci_le_ev_table[U8_MAX + 1] = { 7130 /* [0x01 = HCI_EV_LE_CONN_COMPLETE] */ 7131 HCI_LE_EV(HCI_EV_LE_CONN_COMPLETE, hci_le_conn_complete_evt, 7132 sizeof(struct hci_ev_le_conn_complete)), 7133 /* [0x02 = HCI_EV_LE_ADVERTISING_REPORT] */ 7134 HCI_LE_EV_VL(HCI_EV_LE_ADVERTISING_REPORT, hci_le_adv_report_evt, 7135 sizeof(struct hci_ev_le_advertising_report), 7136 HCI_MAX_EVENT_SIZE), 7137 /* [0x03 = HCI_EV_LE_CONN_UPDATE_COMPLETE] */ 7138 HCI_LE_EV(HCI_EV_LE_CONN_UPDATE_COMPLETE, 7139 hci_le_conn_update_complete_evt, 7140 sizeof(struct hci_ev_le_conn_update_complete)), 7141 /* [0x04 = HCI_EV_LE_REMOTE_FEAT_COMPLETE] */ 7142 HCI_LE_EV(HCI_EV_LE_REMOTE_FEAT_COMPLETE, 7143 hci_le_remote_feat_complete_evt, 7144 sizeof(struct hci_ev_le_remote_feat_complete)), 7145 /* [0x05 = HCI_EV_LE_LTK_REQ] */ 7146 HCI_LE_EV(HCI_EV_LE_LTK_REQ, hci_le_ltk_request_evt, 7147 sizeof(struct hci_ev_le_ltk_req)), 7148 /* [0x06 = HCI_EV_LE_REMOTE_CONN_PARAM_REQ] */ 7149 HCI_LE_EV(HCI_EV_LE_REMOTE_CONN_PARAM_REQ, 7150 hci_le_remote_conn_param_req_evt, 7151 sizeof(struct hci_ev_le_remote_conn_param_req)), 7152 /* [0x0a = HCI_EV_LE_ENHANCED_CONN_COMPLETE] */ 7153 HCI_LE_EV(HCI_EV_LE_ENHANCED_CONN_COMPLETE, 7154 hci_le_enh_conn_complete_evt, 7155 sizeof(struct hci_ev_le_enh_conn_complete)), 7156 /* [0x0b = HCI_EV_LE_DIRECT_ADV_REPORT] */ 7157 HCI_LE_EV_VL(HCI_EV_LE_DIRECT_ADV_REPORT, hci_le_direct_adv_report_evt, 7158 sizeof(struct hci_ev_le_direct_adv_report), 7159 HCI_MAX_EVENT_SIZE), 7160 /* [0x0c = HCI_EV_LE_PHY_UPDATE_COMPLETE] */ 7161 HCI_LE_EV(HCI_EV_LE_PHY_UPDATE_COMPLETE, hci_le_phy_update_evt, 7162 sizeof(struct hci_ev_le_phy_update_complete)), 7163 /* [0x0d = HCI_EV_LE_EXT_ADV_REPORT] */ 7164 HCI_LE_EV_VL(HCI_EV_LE_EXT_ADV_REPORT, hci_le_ext_adv_report_evt, 7165 sizeof(struct hci_ev_le_ext_adv_report), 7166 HCI_MAX_EVENT_SIZE), 7167 /* [0x0e = HCI_EV_LE_PA_SYNC_ESTABLISHED] */ 7168 HCI_LE_EV(HCI_EV_LE_PA_SYNC_ESTABLISHED, 7169 hci_le_pa_sync_established_evt, 7170 sizeof(struct hci_ev_le_pa_sync_established)), 7171 /* [0x0f = HCI_EV_LE_PER_ADV_REPORT] */ 7172 HCI_LE_EV_VL(HCI_EV_LE_PER_ADV_REPORT, 7173 hci_le_per_adv_report_evt, 7174 sizeof(struct hci_ev_le_per_adv_report), 7175 HCI_MAX_EVENT_SIZE), 7176 /* [0x12 = HCI_EV_LE_EXT_ADV_SET_TERM] */ 7177 HCI_LE_EV(HCI_EV_LE_EXT_ADV_SET_TERM, hci_le_ext_adv_term_evt, 7178 sizeof(struct hci_evt_le_ext_adv_set_term)), 7179 /* [0x19 = HCI_EVT_LE_CIS_ESTABLISHED] */ 7180 HCI_LE_EV(HCI_EVT_LE_CIS_ESTABLISHED, hci_le_cis_established_evt, 7181 sizeof(struct hci_evt_le_cis_established)), 7182 /* [0x1a = HCI_EVT_LE_CIS_REQ] */ 7183 HCI_LE_EV(HCI_EVT_LE_CIS_REQ, hci_le_cis_req_evt, 7184 sizeof(struct hci_evt_le_cis_req)), 7185 /* [0x1b = HCI_EVT_LE_CREATE_BIG_COMPLETE] */ 7186 HCI_LE_EV_VL(HCI_EVT_LE_CREATE_BIG_COMPLETE, 7187 hci_le_create_big_complete_evt, 7188 sizeof(struct hci_evt_le_create_big_complete), 7189 HCI_MAX_EVENT_SIZE), 7190 /* [0x1d = HCI_EV_LE_BIG_SYNC_ESTABLISHED] */ 7191 HCI_LE_EV_VL(HCI_EVT_LE_BIG_SYNC_ESTABLISHED, 7192 hci_le_big_sync_established_evt, 7193 sizeof(struct hci_evt_le_big_sync_established), 7194 HCI_MAX_EVENT_SIZE), 7195 /* [0x1e = HCI_EVT_LE_BIG_SYNC_LOST] */ 7196 HCI_LE_EV_VL(HCI_EVT_LE_BIG_SYNC_LOST, 7197 hci_le_big_sync_lost_evt, 7198 sizeof(struct hci_evt_le_big_sync_lost), 7199 HCI_MAX_EVENT_SIZE), 7200 /* [0x22 = HCI_EVT_LE_BIG_INFO_ADV_REPORT] */ 7201 HCI_LE_EV_VL(HCI_EVT_LE_BIG_INFO_ADV_REPORT, 7202 hci_le_big_info_adv_report_evt, 7203 sizeof(struct hci_evt_le_big_info_adv_report), 7204 HCI_MAX_EVENT_SIZE), 7205 }; 7206 7207 static void hci_le_meta_evt(struct hci_dev *hdev, void *data, 7208 struct sk_buff *skb, u16 *opcode, u8 *status, 7209 hci_req_complete_t *req_complete, 7210 hci_req_complete_skb_t *req_complete_skb) 7211 { 7212 struct hci_ev_le_meta *ev = data; 7213 const struct hci_le_ev *subev; 7214 7215 bt_dev_dbg(hdev, "subevent 0x%2.2x", ev->subevent); 7216 7217 /* Only match event if command OGF is for LE */ 7218 if (hdev->req_skb && 7219 (hci_opcode_ogf(hci_skb_opcode(hdev->req_skb)) == 0x08 || 7220 hci_skb_opcode(hdev->req_skb) == HCI_OP_NOP) && 7221 hci_skb_event(hdev->req_skb) == ev->subevent) { 7222 *opcode = hci_skb_opcode(hdev->req_skb); 7223 hci_req_cmd_complete(hdev, *opcode, 0x00, req_complete, 7224 req_complete_skb); 7225 } 7226 7227 subev = &hci_le_ev_table[ev->subevent]; 7228 if (!subev->func) 7229 return; 7230 7231 if (skb->len < subev->min_len) { 7232 bt_dev_err(hdev, "unexpected subevent 0x%2.2x length: %u < %u", 7233 ev->subevent, skb->len, subev->min_len); 7234 return; 7235 } 7236 7237 /* Just warn if the length is over max_len size it still be 7238 * possible to partially parse the event so leave to callback to 7239 * decide if that is acceptable. 7240 */ 7241 if (skb->len > subev->max_len) 7242 bt_dev_warn(hdev, "unexpected subevent 0x%2.2x length: %u > %u", 7243 ev->subevent, skb->len, subev->max_len); 7244 data = hci_le_ev_skb_pull(hdev, skb, ev->subevent, subev->min_len); 7245 if (!data) 7246 return; 7247 7248 subev->func(hdev, data, skb); 7249 } 7250 7251 static bool hci_get_cmd_complete(struct hci_dev *hdev, u16 opcode, 7252 u8 event, struct sk_buff *skb) 7253 { 7254 struct hci_ev_cmd_complete *ev; 7255 struct hci_event_hdr *hdr; 7256 7257 if (!skb) 7258 return false; 7259 7260 hdr = hci_ev_skb_pull(hdev, skb, event, sizeof(*hdr)); 7261 if (!hdr) 7262 return false; 7263 7264 if (event) { 7265 if (hdr->evt != event) 7266 return false; 7267 return true; 7268 } 7269 7270 /* Check if request ended in Command Status - no way to retrieve 7271 * any extra parameters in this case. 7272 */ 7273 if (hdr->evt == HCI_EV_CMD_STATUS) 7274 return false; 7275 7276 if (hdr->evt != HCI_EV_CMD_COMPLETE) { 7277 bt_dev_err(hdev, "last event is not cmd complete (0x%2.2x)", 7278 hdr->evt); 7279 return false; 7280 } 7281 7282 ev = hci_cc_skb_pull(hdev, skb, opcode, sizeof(*ev)); 7283 if (!ev) 7284 return false; 7285 7286 if (opcode != __le16_to_cpu(ev->opcode)) { 7287 BT_DBG("opcode doesn't match (0x%2.2x != 0x%2.2x)", opcode, 7288 __le16_to_cpu(ev->opcode)); 7289 return false; 7290 } 7291 7292 return true; 7293 } 7294 7295 static void hci_store_wake_reason(struct hci_dev *hdev, u8 event, 7296 struct sk_buff *skb) 7297 { 7298 struct hci_ev_le_advertising_info *adv; 7299 struct hci_ev_le_direct_adv_info *direct_adv; 7300 struct hci_ev_le_ext_adv_info *ext_adv; 7301 const struct hci_ev_conn_complete *conn_complete = (void *)skb->data; 7302 const struct hci_ev_conn_request *conn_request = (void *)skb->data; 7303 7304 hci_dev_lock(hdev); 7305 7306 /* If we are currently suspended and this is the first BT event seen, 7307 * save the wake reason associated with the event. 7308 */ 7309 if (!hdev->suspended || hdev->wake_reason) 7310 goto unlock; 7311 7312 /* Default to remote wake. Values for wake_reason are documented in the 7313 * Bluez mgmt api docs. 7314 */ 7315 hdev->wake_reason = MGMT_WAKE_REASON_REMOTE_WAKE; 7316 7317 /* Once configured for remote wakeup, we should only wake up for 7318 * reconnections. It's useful to see which device is waking us up so 7319 * keep track of the bdaddr of the connection event that woke us up. 7320 */ 7321 if (event == HCI_EV_CONN_REQUEST) { 7322 bacpy(&hdev->wake_addr, &conn_request->bdaddr); 7323 hdev->wake_addr_type = BDADDR_BREDR; 7324 } else if (event == HCI_EV_CONN_COMPLETE) { 7325 bacpy(&hdev->wake_addr, &conn_complete->bdaddr); 7326 hdev->wake_addr_type = BDADDR_BREDR; 7327 } else if (event == HCI_EV_LE_META) { 7328 struct hci_ev_le_meta *le_ev = (void *)skb->data; 7329 u8 subevent = le_ev->subevent; 7330 u8 *ptr = &skb->data[sizeof(*le_ev)]; 7331 u8 num_reports = *ptr; 7332 7333 if ((subevent == HCI_EV_LE_ADVERTISING_REPORT || 7334 subevent == HCI_EV_LE_DIRECT_ADV_REPORT || 7335 subevent == HCI_EV_LE_EXT_ADV_REPORT) && 7336 num_reports) { 7337 adv = (void *)(ptr + 1); 7338 direct_adv = (void *)(ptr + 1); 7339 ext_adv = (void *)(ptr + 1); 7340 7341 switch (subevent) { 7342 case HCI_EV_LE_ADVERTISING_REPORT: 7343 bacpy(&hdev->wake_addr, &adv->bdaddr); 7344 hdev->wake_addr_type = adv->bdaddr_type; 7345 break; 7346 case HCI_EV_LE_DIRECT_ADV_REPORT: 7347 bacpy(&hdev->wake_addr, &direct_adv->bdaddr); 7348 hdev->wake_addr_type = direct_adv->bdaddr_type; 7349 break; 7350 case HCI_EV_LE_EXT_ADV_REPORT: 7351 bacpy(&hdev->wake_addr, &ext_adv->bdaddr); 7352 hdev->wake_addr_type = ext_adv->bdaddr_type; 7353 break; 7354 } 7355 } 7356 } else { 7357 hdev->wake_reason = MGMT_WAKE_REASON_UNEXPECTED; 7358 } 7359 7360 unlock: 7361 hci_dev_unlock(hdev); 7362 } 7363 7364 #define HCI_EV_VL(_op, _func, _min_len, _max_len) \ 7365 [_op] = { \ 7366 .req = false, \ 7367 .func = _func, \ 7368 .min_len = _min_len, \ 7369 .max_len = _max_len, \ 7370 } 7371 7372 #define HCI_EV(_op, _func, _len) \ 7373 HCI_EV_VL(_op, _func, _len, _len) 7374 7375 #define HCI_EV_STATUS(_op, _func) \ 7376 HCI_EV(_op, _func, sizeof(struct hci_ev_status)) 7377 7378 #define HCI_EV_REQ_VL(_op, _func, _min_len, _max_len) \ 7379 [_op] = { \ 7380 .req = true, \ 7381 .func_req = _func, \ 7382 .min_len = _min_len, \ 7383 .max_len = _max_len, \ 7384 } 7385 7386 #define HCI_EV_REQ(_op, _func, _len) \ 7387 HCI_EV_REQ_VL(_op, _func, _len, _len) 7388 7389 /* Entries in this table shall have their position according to the event opcode 7390 * they handle so the use of the macros above is recommend since it does attempt 7391 * to initialize at its proper index using Designated Initializers that way 7392 * events without a callback function don't have entered. 7393 */ 7394 static const struct hci_ev { 7395 bool req; 7396 union { 7397 void (*func)(struct hci_dev *hdev, void *data, 7398 struct sk_buff *skb); 7399 void (*func_req)(struct hci_dev *hdev, void *data, 7400 struct sk_buff *skb, u16 *opcode, u8 *status, 7401 hci_req_complete_t *req_complete, 7402 hci_req_complete_skb_t *req_complete_skb); 7403 }; 7404 u16 min_len; 7405 u16 max_len; 7406 } hci_ev_table[U8_MAX + 1] = { 7407 /* [0x01 = HCI_EV_INQUIRY_COMPLETE] */ 7408 HCI_EV_STATUS(HCI_EV_INQUIRY_COMPLETE, hci_inquiry_complete_evt), 7409 /* [0x02 = HCI_EV_INQUIRY_RESULT] */ 7410 HCI_EV_VL(HCI_EV_INQUIRY_RESULT, hci_inquiry_result_evt, 7411 sizeof(struct hci_ev_inquiry_result), HCI_MAX_EVENT_SIZE), 7412 /* [0x03 = HCI_EV_CONN_COMPLETE] */ 7413 HCI_EV(HCI_EV_CONN_COMPLETE, hci_conn_complete_evt, 7414 sizeof(struct hci_ev_conn_complete)), 7415 /* [0x04 = HCI_EV_CONN_REQUEST] */ 7416 HCI_EV(HCI_EV_CONN_REQUEST, hci_conn_request_evt, 7417 sizeof(struct hci_ev_conn_request)), 7418 /* [0x05 = HCI_EV_DISCONN_COMPLETE] */ 7419 HCI_EV(HCI_EV_DISCONN_COMPLETE, hci_disconn_complete_evt, 7420 sizeof(struct hci_ev_disconn_complete)), 7421 /* [0x06 = HCI_EV_AUTH_COMPLETE] */ 7422 HCI_EV(HCI_EV_AUTH_COMPLETE, hci_auth_complete_evt, 7423 sizeof(struct hci_ev_auth_complete)), 7424 /* [0x07 = HCI_EV_REMOTE_NAME] */ 7425 HCI_EV(HCI_EV_REMOTE_NAME, hci_remote_name_evt, 7426 sizeof(struct hci_ev_remote_name)), 7427 /* [0x08 = HCI_EV_ENCRYPT_CHANGE] */ 7428 HCI_EV(HCI_EV_ENCRYPT_CHANGE, hci_encrypt_change_evt, 7429 sizeof(struct hci_ev_encrypt_change)), 7430 /* [0x09 = HCI_EV_CHANGE_LINK_KEY_COMPLETE] */ 7431 HCI_EV(HCI_EV_CHANGE_LINK_KEY_COMPLETE, 7432 hci_change_link_key_complete_evt, 7433 sizeof(struct hci_ev_change_link_key_complete)), 7434 /* [0x0b = HCI_EV_REMOTE_FEATURES] */ 7435 HCI_EV(HCI_EV_REMOTE_FEATURES, hci_remote_features_evt, 7436 sizeof(struct hci_ev_remote_features)), 7437 /* [0x0e = HCI_EV_CMD_COMPLETE] */ 7438 HCI_EV_REQ_VL(HCI_EV_CMD_COMPLETE, hci_cmd_complete_evt, 7439 sizeof(struct hci_ev_cmd_complete), HCI_MAX_EVENT_SIZE), 7440 /* [0x0f = HCI_EV_CMD_STATUS] */ 7441 HCI_EV_REQ(HCI_EV_CMD_STATUS, hci_cmd_status_evt, 7442 sizeof(struct hci_ev_cmd_status)), 7443 /* [0x10 = HCI_EV_CMD_STATUS] */ 7444 HCI_EV(HCI_EV_HARDWARE_ERROR, hci_hardware_error_evt, 7445 sizeof(struct hci_ev_hardware_error)), 7446 /* [0x12 = HCI_EV_ROLE_CHANGE] */ 7447 HCI_EV(HCI_EV_ROLE_CHANGE, hci_role_change_evt, 7448 sizeof(struct hci_ev_role_change)), 7449 /* [0x13 = HCI_EV_NUM_COMP_PKTS] */ 7450 HCI_EV_VL(HCI_EV_NUM_COMP_PKTS, hci_num_comp_pkts_evt, 7451 sizeof(struct hci_ev_num_comp_pkts), HCI_MAX_EVENT_SIZE), 7452 /* [0x14 = HCI_EV_MODE_CHANGE] */ 7453 HCI_EV(HCI_EV_MODE_CHANGE, hci_mode_change_evt, 7454 sizeof(struct hci_ev_mode_change)), 7455 /* [0x16 = HCI_EV_PIN_CODE_REQ] */ 7456 HCI_EV(HCI_EV_PIN_CODE_REQ, hci_pin_code_request_evt, 7457 sizeof(struct hci_ev_pin_code_req)), 7458 /* [0x17 = HCI_EV_LINK_KEY_REQ] */ 7459 HCI_EV(HCI_EV_LINK_KEY_REQ, hci_link_key_request_evt, 7460 sizeof(struct hci_ev_link_key_req)), 7461 /* [0x18 = HCI_EV_LINK_KEY_NOTIFY] */ 7462 HCI_EV(HCI_EV_LINK_KEY_NOTIFY, hci_link_key_notify_evt, 7463 sizeof(struct hci_ev_link_key_notify)), 7464 /* [0x1c = HCI_EV_CLOCK_OFFSET] */ 7465 HCI_EV(HCI_EV_CLOCK_OFFSET, hci_clock_offset_evt, 7466 sizeof(struct hci_ev_clock_offset)), 7467 /* [0x1d = HCI_EV_PKT_TYPE_CHANGE] */ 7468 HCI_EV(HCI_EV_PKT_TYPE_CHANGE, hci_pkt_type_change_evt, 7469 sizeof(struct hci_ev_pkt_type_change)), 7470 /* [0x20 = HCI_EV_PSCAN_REP_MODE] */ 7471 HCI_EV(HCI_EV_PSCAN_REP_MODE, hci_pscan_rep_mode_evt, 7472 sizeof(struct hci_ev_pscan_rep_mode)), 7473 /* [0x22 = HCI_EV_INQUIRY_RESULT_WITH_RSSI] */ 7474 HCI_EV_VL(HCI_EV_INQUIRY_RESULT_WITH_RSSI, 7475 hci_inquiry_result_with_rssi_evt, 7476 sizeof(struct hci_ev_inquiry_result_rssi), 7477 HCI_MAX_EVENT_SIZE), 7478 /* [0x23 = HCI_EV_REMOTE_EXT_FEATURES] */ 7479 HCI_EV(HCI_EV_REMOTE_EXT_FEATURES, hci_remote_ext_features_evt, 7480 sizeof(struct hci_ev_remote_ext_features)), 7481 /* [0x2c = HCI_EV_SYNC_CONN_COMPLETE] */ 7482 HCI_EV(HCI_EV_SYNC_CONN_COMPLETE, hci_sync_conn_complete_evt, 7483 sizeof(struct hci_ev_sync_conn_complete)), 7484 /* [0x2f = HCI_EV_EXTENDED_INQUIRY_RESULT] */ 7485 HCI_EV_VL(HCI_EV_EXTENDED_INQUIRY_RESULT, 7486 hci_extended_inquiry_result_evt, 7487 sizeof(struct hci_ev_ext_inquiry_result), HCI_MAX_EVENT_SIZE), 7488 /* [0x30 = HCI_EV_KEY_REFRESH_COMPLETE] */ 7489 HCI_EV(HCI_EV_KEY_REFRESH_COMPLETE, hci_key_refresh_complete_evt, 7490 sizeof(struct hci_ev_key_refresh_complete)), 7491 /* [0x31 = HCI_EV_IO_CAPA_REQUEST] */ 7492 HCI_EV(HCI_EV_IO_CAPA_REQUEST, hci_io_capa_request_evt, 7493 sizeof(struct hci_ev_io_capa_request)), 7494 /* [0x32 = HCI_EV_IO_CAPA_REPLY] */ 7495 HCI_EV(HCI_EV_IO_CAPA_REPLY, hci_io_capa_reply_evt, 7496 sizeof(struct hci_ev_io_capa_reply)), 7497 /* [0x33 = HCI_EV_USER_CONFIRM_REQUEST] */ 7498 HCI_EV(HCI_EV_USER_CONFIRM_REQUEST, hci_user_confirm_request_evt, 7499 sizeof(struct hci_ev_user_confirm_req)), 7500 /* [0x34 = HCI_EV_USER_PASSKEY_REQUEST] */ 7501 HCI_EV(HCI_EV_USER_PASSKEY_REQUEST, hci_user_passkey_request_evt, 7502 sizeof(struct hci_ev_user_passkey_req)), 7503 /* [0x35 = HCI_EV_REMOTE_OOB_DATA_REQUEST] */ 7504 HCI_EV(HCI_EV_REMOTE_OOB_DATA_REQUEST, hci_remote_oob_data_request_evt, 7505 sizeof(struct hci_ev_remote_oob_data_request)), 7506 /* [0x36 = HCI_EV_SIMPLE_PAIR_COMPLETE] */ 7507 HCI_EV(HCI_EV_SIMPLE_PAIR_COMPLETE, hci_simple_pair_complete_evt, 7508 sizeof(struct hci_ev_simple_pair_complete)), 7509 /* [0x3b = HCI_EV_USER_PASSKEY_NOTIFY] */ 7510 HCI_EV(HCI_EV_USER_PASSKEY_NOTIFY, hci_user_passkey_notify_evt, 7511 sizeof(struct hci_ev_user_passkey_notify)), 7512 /* [0x3c = HCI_EV_KEYPRESS_NOTIFY] */ 7513 HCI_EV(HCI_EV_KEYPRESS_NOTIFY, hci_keypress_notify_evt, 7514 sizeof(struct hci_ev_keypress_notify)), 7515 /* [0x3d = HCI_EV_REMOTE_HOST_FEATURES] */ 7516 HCI_EV(HCI_EV_REMOTE_HOST_FEATURES, hci_remote_host_features_evt, 7517 sizeof(struct hci_ev_remote_host_features)), 7518 /* [0x3e = HCI_EV_LE_META] */ 7519 HCI_EV_REQ_VL(HCI_EV_LE_META, hci_le_meta_evt, 7520 sizeof(struct hci_ev_le_meta), HCI_MAX_EVENT_SIZE), 7521 /* [0xff = HCI_EV_VENDOR] */ 7522 HCI_EV_VL(HCI_EV_VENDOR, msft_vendor_evt, 0, HCI_MAX_EVENT_SIZE), 7523 }; 7524 7525 static void hci_event_func(struct hci_dev *hdev, u8 event, struct sk_buff *skb, 7526 u16 *opcode, u8 *status, 7527 hci_req_complete_t *req_complete, 7528 hci_req_complete_skb_t *req_complete_skb) 7529 { 7530 const struct hci_ev *ev = &hci_ev_table[event]; 7531 void *data; 7532 7533 if (!ev->func) 7534 return; 7535 7536 if (skb->len < ev->min_len) { 7537 bt_dev_err(hdev, "unexpected event 0x%2.2x length: %u < %u", 7538 event, skb->len, ev->min_len); 7539 return; 7540 } 7541 7542 /* Just warn if the length is over max_len size it still be 7543 * possible to partially parse the event so leave to callback to 7544 * decide if that is acceptable. 7545 */ 7546 if (skb->len > ev->max_len) 7547 bt_dev_warn_ratelimited(hdev, 7548 "unexpected event 0x%2.2x length: %u > %u", 7549 event, skb->len, ev->max_len); 7550 7551 data = hci_ev_skb_pull(hdev, skb, event, ev->min_len); 7552 if (!data) 7553 return; 7554 7555 if (ev->req) 7556 ev->func_req(hdev, data, skb, opcode, status, req_complete, 7557 req_complete_skb); 7558 else 7559 ev->func(hdev, data, skb); 7560 } 7561 7562 void hci_event_packet(struct hci_dev *hdev, struct sk_buff *skb) 7563 { 7564 struct hci_event_hdr *hdr = (void *) skb->data; 7565 hci_req_complete_t req_complete = NULL; 7566 hci_req_complete_skb_t req_complete_skb = NULL; 7567 struct sk_buff *orig_skb = NULL; 7568 u8 status = 0, event, req_evt = 0; 7569 u16 opcode = HCI_OP_NOP; 7570 7571 if (skb->len < sizeof(*hdr)) { 7572 bt_dev_err(hdev, "Malformed HCI Event"); 7573 goto done; 7574 } 7575 7576 hci_dev_lock(hdev); 7577 kfree_skb(hdev->recv_event); 7578 hdev->recv_event = skb_clone(skb, GFP_KERNEL); 7579 hci_dev_unlock(hdev); 7580 7581 event = hdr->evt; 7582 if (!event) { 7583 bt_dev_warn(hdev, "Received unexpected HCI Event 0x%2.2x", 7584 event); 7585 goto done; 7586 } 7587 7588 /* Only match event if command OGF is not for LE */ 7589 if (hdev->req_skb && 7590 hci_opcode_ogf(hci_skb_opcode(hdev->req_skb)) != 0x08 && 7591 hci_skb_event(hdev->req_skb) == event) { 7592 hci_req_cmd_complete(hdev, hci_skb_opcode(hdev->req_skb), 7593 status, &req_complete, &req_complete_skb); 7594 req_evt = event; 7595 } 7596 7597 /* If it looks like we might end up having to call 7598 * req_complete_skb, store a pristine copy of the skb since the 7599 * various handlers may modify the original one through 7600 * skb_pull() calls, etc. 7601 */ 7602 if (req_complete_skb || event == HCI_EV_CMD_STATUS || 7603 event == HCI_EV_CMD_COMPLETE) 7604 orig_skb = skb_clone(skb, GFP_KERNEL); 7605 7606 skb_pull(skb, HCI_EVENT_HDR_SIZE); 7607 7608 /* Store wake reason if we're suspended */ 7609 hci_store_wake_reason(hdev, event, skb); 7610 7611 bt_dev_dbg(hdev, "event 0x%2.2x", event); 7612 7613 hci_event_func(hdev, event, skb, &opcode, &status, &req_complete, 7614 &req_complete_skb); 7615 7616 if (req_complete) { 7617 req_complete(hdev, status, opcode); 7618 } else if (req_complete_skb) { 7619 if (!hci_get_cmd_complete(hdev, opcode, req_evt, orig_skb)) { 7620 kfree_skb(orig_skb); 7621 orig_skb = NULL; 7622 } 7623 req_complete_skb(hdev, status, opcode, orig_skb); 7624 } 7625 7626 done: 7627 kfree_skb(orig_skb); 7628 kfree_skb(skb); 7629 hdev->stat.evt_rx++; 7630 } 7631