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) { 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 mgmt_conn = test_and_clear_bit(HCI_CONN_MGMT_CONNECTED, &conn->flags); 2722 2723 if (conn->type == ACL_LINK) { 2724 if (test_and_clear_bit(HCI_CONN_FLUSH_KEY, &conn->flags)) 2725 hci_remove_link_key(hdev, &conn->dst); 2726 } 2727 2728 params = hci_conn_params_lookup(hdev, &conn->dst, conn->dst_type); 2729 if (params) { 2730 switch (params->auto_connect) { 2731 case HCI_AUTO_CONN_LINK_LOSS: 2732 if (cp->reason != HCI_ERROR_CONNECTION_TIMEOUT) 2733 break; 2734 fallthrough; 2735 2736 case HCI_AUTO_CONN_DIRECT: 2737 case HCI_AUTO_CONN_ALWAYS: 2738 hci_pend_le_list_del_init(params); 2739 hci_pend_le_list_add(params, &hdev->pend_le_conns); 2740 break; 2741 2742 default: 2743 break; 2744 } 2745 } 2746 2747 mgmt_device_disconnected(hdev, &conn->dst, conn->type, conn->dst_type, 2748 cp->reason, mgmt_conn); 2749 2750 hci_disconn_cfm(conn, cp->reason); 2751 2752 done: 2753 /* If the disconnection failed for any reason, the upper layer 2754 * does not retry to disconnect in current implementation. 2755 * Hence, we need to do some basic cleanup here and re-enable 2756 * advertising if necessary. 2757 */ 2758 hci_conn_del(conn); 2759 unlock: 2760 hci_dev_unlock(hdev); 2761 } 2762 2763 static u8 ev_bdaddr_type(struct hci_dev *hdev, u8 type, bool *resolved) 2764 { 2765 /* When using controller based address resolution, then the new 2766 * address types 0x02 and 0x03 are used. These types need to be 2767 * converted back into either public address or random address type 2768 */ 2769 switch (type) { 2770 case ADDR_LE_DEV_PUBLIC_RESOLVED: 2771 if (resolved) 2772 *resolved = true; 2773 return ADDR_LE_DEV_PUBLIC; 2774 case ADDR_LE_DEV_RANDOM_RESOLVED: 2775 if (resolved) 2776 *resolved = true; 2777 return ADDR_LE_DEV_RANDOM; 2778 } 2779 2780 if (resolved) 2781 *resolved = false; 2782 return type; 2783 } 2784 2785 static void cs_le_create_conn(struct hci_dev *hdev, bdaddr_t *peer_addr, 2786 u8 peer_addr_type, u8 own_address_type, 2787 u8 filter_policy) 2788 { 2789 struct hci_conn *conn; 2790 2791 conn = hci_conn_hash_lookup_le(hdev, peer_addr, 2792 peer_addr_type); 2793 if (!conn) 2794 return; 2795 2796 own_address_type = ev_bdaddr_type(hdev, own_address_type, NULL); 2797 2798 /* Store the initiator and responder address information which 2799 * is needed for SMP. These values will not change during the 2800 * lifetime of the connection. 2801 */ 2802 conn->init_addr_type = own_address_type; 2803 if (own_address_type == ADDR_LE_DEV_RANDOM) 2804 bacpy(&conn->init_addr, &hdev->random_addr); 2805 else 2806 bacpy(&conn->init_addr, &hdev->bdaddr); 2807 2808 conn->resp_addr_type = peer_addr_type; 2809 bacpy(&conn->resp_addr, peer_addr); 2810 } 2811 2812 static void hci_cs_le_create_conn(struct hci_dev *hdev, u8 status) 2813 { 2814 struct hci_cp_le_create_conn *cp; 2815 2816 bt_dev_dbg(hdev, "status 0x%2.2x", status); 2817 2818 /* All connection failure handling is taken care of by the 2819 * hci_conn_failed function which is triggered by the HCI 2820 * request completion callbacks used for connecting. 2821 */ 2822 if (status) 2823 return; 2824 2825 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_CREATE_CONN); 2826 if (!cp) 2827 return; 2828 2829 hci_dev_lock(hdev); 2830 2831 cs_le_create_conn(hdev, &cp->peer_addr, cp->peer_addr_type, 2832 cp->own_address_type, cp->filter_policy); 2833 2834 hci_dev_unlock(hdev); 2835 } 2836 2837 static void hci_cs_le_ext_create_conn(struct hci_dev *hdev, u8 status) 2838 { 2839 struct hci_cp_le_ext_create_conn *cp; 2840 2841 bt_dev_dbg(hdev, "status 0x%2.2x", status); 2842 2843 /* All connection failure handling is taken care of by the 2844 * hci_conn_failed function which is triggered by the HCI 2845 * request completion callbacks used for connecting. 2846 */ 2847 if (status) 2848 return; 2849 2850 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_EXT_CREATE_CONN); 2851 if (!cp) 2852 return; 2853 2854 hci_dev_lock(hdev); 2855 2856 cs_le_create_conn(hdev, &cp->peer_addr, cp->peer_addr_type, 2857 cp->own_addr_type, cp->filter_policy); 2858 2859 hci_dev_unlock(hdev); 2860 } 2861 2862 static void hci_cs_le_read_remote_features(struct hci_dev *hdev, u8 status) 2863 { 2864 struct hci_cp_le_read_remote_features *cp; 2865 struct hci_conn *conn; 2866 2867 bt_dev_dbg(hdev, "status 0x%2.2x", status); 2868 2869 if (!status) 2870 return; 2871 2872 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_READ_REMOTE_FEATURES); 2873 if (!cp) 2874 return; 2875 2876 hci_dev_lock(hdev); 2877 2878 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle)); 2879 if (conn) { 2880 if (conn->state == BT_CONFIG) { 2881 hci_connect_cfm(conn, status); 2882 hci_conn_drop(conn); 2883 } 2884 } 2885 2886 hci_dev_unlock(hdev); 2887 } 2888 2889 static void hci_cs_le_start_enc(struct hci_dev *hdev, u8 status) 2890 { 2891 struct hci_cp_le_start_enc *cp; 2892 struct hci_conn *conn; 2893 2894 bt_dev_dbg(hdev, "status 0x%2.2x", status); 2895 2896 if (!status) 2897 return; 2898 2899 hci_dev_lock(hdev); 2900 2901 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_START_ENC); 2902 if (!cp) 2903 goto unlock; 2904 2905 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle)); 2906 if (!conn) 2907 goto unlock; 2908 2909 if (conn->state != BT_CONNECTED) 2910 goto unlock; 2911 2912 hci_disconnect(conn, HCI_ERROR_AUTH_FAILURE); 2913 hci_conn_drop(conn); 2914 2915 unlock: 2916 hci_dev_unlock(hdev); 2917 } 2918 2919 static void hci_cs_switch_role(struct hci_dev *hdev, u8 status) 2920 { 2921 struct hci_cp_switch_role *cp; 2922 struct hci_conn *conn; 2923 2924 BT_DBG("%s status 0x%2.2x", hdev->name, status); 2925 2926 if (!status) 2927 return; 2928 2929 cp = hci_sent_cmd_data(hdev, HCI_OP_SWITCH_ROLE); 2930 if (!cp) 2931 return; 2932 2933 hci_dev_lock(hdev); 2934 2935 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &cp->bdaddr); 2936 if (conn) 2937 clear_bit(HCI_CONN_RSWITCH_PEND, &conn->flags); 2938 2939 hci_dev_unlock(hdev); 2940 } 2941 2942 static void hci_inquiry_complete_evt(struct hci_dev *hdev, void *data, 2943 struct sk_buff *skb) 2944 { 2945 struct hci_ev_status *ev = data; 2946 struct discovery_state *discov = &hdev->discovery; 2947 struct inquiry_entry *e; 2948 2949 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 2950 2951 if (!test_and_clear_bit(HCI_INQUIRY, &hdev->flags)) 2952 return; 2953 2954 smp_mb__after_atomic(); /* wake_up_bit advises about this barrier */ 2955 wake_up_bit(&hdev->flags, HCI_INQUIRY); 2956 2957 if (!hci_dev_test_flag(hdev, HCI_MGMT)) 2958 return; 2959 2960 hci_dev_lock(hdev); 2961 2962 if (discov->state != DISCOVERY_FINDING) 2963 goto unlock; 2964 2965 if (list_empty(&discov->resolve)) { 2966 /* When BR/EDR inquiry is active and no LE scanning is in 2967 * progress, then change discovery state to indicate completion. 2968 * 2969 * When running LE scanning and BR/EDR inquiry simultaneously 2970 * and the LE scan already finished, then change the discovery 2971 * state to indicate completion. 2972 */ 2973 if (!hci_dev_test_flag(hdev, HCI_LE_SCAN) || 2974 !hci_test_quirk(hdev, HCI_QUIRK_SIMULTANEOUS_DISCOVERY)) 2975 hci_discovery_set_state(hdev, DISCOVERY_STOPPED); 2976 goto unlock; 2977 } 2978 2979 e = hci_inquiry_cache_lookup_resolve(hdev, BDADDR_ANY, NAME_NEEDED); 2980 if (e && hci_resolve_name(hdev, e) == 0) { 2981 e->name_state = NAME_PENDING; 2982 hci_discovery_set_state(hdev, DISCOVERY_RESOLVING); 2983 discov->name_resolve_timeout = jiffies + NAME_RESOLVE_DURATION; 2984 } else { 2985 /* When BR/EDR inquiry is active and no LE scanning is in 2986 * progress, then change discovery state to indicate completion. 2987 * 2988 * When running LE scanning and BR/EDR inquiry simultaneously 2989 * and the LE scan already finished, then change the discovery 2990 * state to indicate completion. 2991 */ 2992 if (!hci_dev_test_flag(hdev, HCI_LE_SCAN) || 2993 !hci_test_quirk(hdev, HCI_QUIRK_SIMULTANEOUS_DISCOVERY)) 2994 hci_discovery_set_state(hdev, DISCOVERY_STOPPED); 2995 } 2996 2997 unlock: 2998 hci_dev_unlock(hdev); 2999 } 3000 3001 static void hci_inquiry_result_evt(struct hci_dev *hdev, void *edata, 3002 struct sk_buff *skb) 3003 { 3004 struct hci_ev_inquiry_result *ev = edata; 3005 struct inquiry_data data; 3006 int i; 3007 3008 if (!hci_ev_skb_pull(hdev, skb, HCI_EV_INQUIRY_RESULT, 3009 flex_array_size(ev, info, ev->num))) 3010 return; 3011 3012 bt_dev_dbg(hdev, "num %d", ev->num); 3013 3014 if (!ev->num) 3015 return; 3016 3017 if (hci_dev_test_flag(hdev, HCI_PERIODIC_INQ)) 3018 return; 3019 3020 hci_dev_lock(hdev); 3021 3022 for (i = 0; i < ev->num; i++) { 3023 struct inquiry_info *info = &ev->info[i]; 3024 u32 flags; 3025 3026 bacpy(&data.bdaddr, &info->bdaddr); 3027 data.pscan_rep_mode = info->pscan_rep_mode; 3028 data.pscan_period_mode = info->pscan_period_mode; 3029 data.pscan_mode = info->pscan_mode; 3030 memcpy(data.dev_class, info->dev_class, 3); 3031 data.clock_offset = info->clock_offset; 3032 data.rssi = HCI_RSSI_INVALID; 3033 data.ssp_mode = 0x00; 3034 3035 flags = hci_inquiry_cache_update(hdev, &data, false); 3036 3037 mgmt_device_found(hdev, &info->bdaddr, ACL_LINK, 0x00, 3038 info->dev_class, HCI_RSSI_INVALID, 3039 flags, NULL, 0, NULL, 0, 0); 3040 } 3041 3042 hci_dev_unlock(hdev); 3043 } 3044 3045 static int hci_read_enc_key_size(struct hci_dev *hdev, struct hci_conn *conn) 3046 { 3047 struct hci_cp_read_enc_key_size cp; 3048 u8 *key_enc_size = hci_conn_key_enc_size(conn); 3049 3050 if (!read_key_size_capable(hdev)) { 3051 conn->enc_key_size = HCI_LINK_KEY_SIZE; 3052 return -EOPNOTSUPP; 3053 } 3054 3055 bt_dev_dbg(hdev, "hcon %p", conn); 3056 3057 memset(&cp, 0, sizeof(cp)); 3058 cp.handle = cpu_to_le16(conn->handle); 3059 3060 /* If the key enc_size is already known, use it as conn->enc_key_size, 3061 * otherwise use hdev->min_enc_key_size so the likes of 3062 * l2cap_check_enc_key_size don't fail while waiting for 3063 * HCI_OP_READ_ENC_KEY_SIZE response. 3064 */ 3065 if (key_enc_size && *key_enc_size) 3066 conn->enc_key_size = *key_enc_size; 3067 else 3068 conn->enc_key_size = hdev->min_enc_key_size; 3069 3070 return hci_send_cmd(hdev, HCI_OP_READ_ENC_KEY_SIZE, sizeof(cp), &cp); 3071 } 3072 3073 static void hci_conn_complete_evt(struct hci_dev *hdev, void *data, 3074 struct sk_buff *skb) 3075 { 3076 struct hci_ev_conn_complete *ev = data; 3077 struct hci_conn *conn; 3078 u8 status = ev->status; 3079 3080 bt_dev_dbg(hdev, "status 0x%2.2x", status); 3081 3082 hci_dev_lock(hdev); 3083 3084 conn = hci_conn_hash_lookup_ba(hdev, ev->link_type, &ev->bdaddr); 3085 if (!conn) { 3086 /* In case of error status and there is no connection pending 3087 * just unlock as there is nothing to cleanup. 3088 */ 3089 if (ev->status) 3090 goto unlock; 3091 3092 /* Connection may not exist if auto-connected. Check the bredr 3093 * allowlist to see if this device is allowed to auto connect. 3094 * If link is an ACL type, create a connection class 3095 * automatically. 3096 * 3097 * Auto-connect will only occur if the event filter is 3098 * programmed with a given address. Right now, event filter is 3099 * only used during suspend. 3100 */ 3101 if (ev->link_type == ACL_LINK && 3102 hci_bdaddr_list_lookup_with_flags(&hdev->accept_list, 3103 &ev->bdaddr, 3104 BDADDR_BREDR)) { 3105 conn = hci_conn_add_unset(hdev, ev->link_type, 3106 &ev->bdaddr, HCI_ROLE_SLAVE); 3107 if (IS_ERR(conn)) { 3108 bt_dev_err(hdev, "connection err: %ld", PTR_ERR(conn)); 3109 goto unlock; 3110 } 3111 } else { 3112 if (ev->link_type != SCO_LINK) 3113 goto unlock; 3114 3115 conn = hci_conn_hash_lookup_ba(hdev, ESCO_LINK, 3116 &ev->bdaddr); 3117 if (!conn) 3118 goto unlock; 3119 3120 conn->type = SCO_LINK; 3121 } 3122 } 3123 3124 /* The HCI_Connection_Complete event is only sent once per connection. 3125 * Processing it more than once per connection can corrupt kernel memory. 3126 * 3127 * As the connection handle is set here for the first time, it indicates 3128 * whether the connection is already set up. 3129 */ 3130 if (!HCI_CONN_HANDLE_UNSET(conn->handle)) { 3131 bt_dev_err(hdev, "Ignoring HCI_Connection_Complete for existing connection"); 3132 goto unlock; 3133 } 3134 3135 if (!status) { 3136 status = hci_conn_set_handle(conn, __le16_to_cpu(ev->handle)); 3137 if (status) 3138 goto done; 3139 3140 if (conn->type == ACL_LINK) { 3141 conn->state = BT_CONFIG; 3142 hci_conn_hold(conn); 3143 3144 if (!conn->out && !hci_conn_ssp_enabled(conn) && 3145 !hci_find_link_key(hdev, &ev->bdaddr)) 3146 conn->disc_timeout = HCI_PAIRING_TIMEOUT; 3147 else 3148 conn->disc_timeout = HCI_DISCONN_TIMEOUT; 3149 } else 3150 conn->state = BT_CONNECTED; 3151 3152 hci_debugfs_create_conn(conn); 3153 hci_conn_add_sysfs(conn); 3154 3155 if (test_bit(HCI_AUTH, &hdev->flags)) 3156 set_bit(HCI_CONN_AUTH, &conn->flags); 3157 3158 if (test_bit(HCI_ENCRYPT, &hdev->flags)) 3159 set_bit(HCI_CONN_ENCRYPT, &conn->flags); 3160 3161 /* "Link key request" completed ahead of "connect request" completes */ 3162 if (ev->encr_mode == 1 && !test_bit(HCI_CONN_ENCRYPT, &conn->flags) && 3163 ev->link_type == ACL_LINK) { 3164 struct link_key *key; 3165 3166 key = hci_find_link_key(hdev, &ev->bdaddr); 3167 if (key) { 3168 set_bit(HCI_CONN_ENCRYPT, &conn->flags); 3169 hci_read_enc_key_size(hdev, conn); 3170 hci_encrypt_cfm(conn, ev->status); 3171 } 3172 } 3173 3174 /* Get remote features */ 3175 if (conn->type == ACL_LINK) { 3176 struct hci_cp_read_remote_features cp; 3177 cp.handle = ev->handle; 3178 hci_send_cmd(hdev, HCI_OP_READ_REMOTE_FEATURES, 3179 sizeof(cp), &cp); 3180 3181 hci_update_scan(hdev); 3182 } 3183 3184 /* Set packet type for incoming connection */ 3185 if (!conn->out && hdev->hci_ver < BLUETOOTH_VER_2_0) { 3186 struct hci_cp_change_conn_ptype cp; 3187 cp.handle = ev->handle; 3188 cp.pkt_type = cpu_to_le16(conn->pkt_type); 3189 hci_send_cmd(hdev, HCI_OP_CHANGE_CONN_PTYPE, sizeof(cp), 3190 &cp); 3191 } 3192 } 3193 3194 if (conn->type == ACL_LINK) 3195 hci_sco_setup(conn, ev->status); 3196 3197 done: 3198 if (status) { 3199 hci_conn_failed(conn, status); 3200 } else if (ev->link_type == SCO_LINK) { 3201 switch (conn->setting & SCO_AIRMODE_MASK) { 3202 case SCO_AIRMODE_CVSD: 3203 if (hdev->notify) 3204 hdev->notify(hdev, HCI_NOTIFY_ENABLE_SCO_CVSD); 3205 break; 3206 } 3207 3208 hci_connect_cfm(conn, status); 3209 } 3210 3211 unlock: 3212 hci_dev_unlock(hdev); 3213 } 3214 3215 static void hci_reject_conn(struct hci_dev *hdev, bdaddr_t *bdaddr) 3216 { 3217 struct hci_cp_reject_conn_req cp; 3218 3219 bacpy(&cp.bdaddr, bdaddr); 3220 cp.reason = HCI_ERROR_REJ_BAD_ADDR; 3221 hci_send_cmd(hdev, HCI_OP_REJECT_CONN_REQ, sizeof(cp), &cp); 3222 } 3223 3224 static void hci_conn_request_evt(struct hci_dev *hdev, void *data, 3225 struct sk_buff *skb) 3226 { 3227 struct hci_ev_conn_request *ev = data; 3228 int mask = hdev->link_mode; 3229 struct inquiry_entry *ie; 3230 struct hci_conn *conn; 3231 __u8 flags = 0; 3232 3233 bt_dev_dbg(hdev, "bdaddr %pMR type 0x%x", &ev->bdaddr, ev->link_type); 3234 3235 /* Reject incoming connection from device with same BD ADDR against 3236 * CVE-2020-26555 3237 */ 3238 if (hdev && !bacmp(&hdev->bdaddr, &ev->bdaddr)) { 3239 bt_dev_dbg(hdev, "Reject connection with same BD_ADDR %pMR\n", 3240 &ev->bdaddr); 3241 hci_reject_conn(hdev, &ev->bdaddr); 3242 return; 3243 } 3244 3245 mask |= hci_proto_connect_ind(hdev, &ev->bdaddr, ev->link_type, 3246 &flags); 3247 3248 if (!(mask & HCI_LM_ACCEPT)) { 3249 hci_reject_conn(hdev, &ev->bdaddr); 3250 return; 3251 } 3252 3253 hci_dev_lock(hdev); 3254 3255 if (hci_bdaddr_list_lookup(&hdev->reject_list, &ev->bdaddr, 3256 BDADDR_BREDR)) { 3257 hci_reject_conn(hdev, &ev->bdaddr); 3258 goto unlock; 3259 } 3260 3261 /* Require HCI_CONNECTABLE or an accept list entry to accept the 3262 * connection. These features are only touched through mgmt so 3263 * only do the checks if HCI_MGMT is set. 3264 */ 3265 if (hci_dev_test_flag(hdev, HCI_MGMT) && 3266 !hci_dev_test_flag(hdev, HCI_CONNECTABLE) && 3267 !hci_bdaddr_list_lookup_with_flags(&hdev->accept_list, &ev->bdaddr, 3268 BDADDR_BREDR)) { 3269 hci_reject_conn(hdev, &ev->bdaddr); 3270 goto unlock; 3271 } 3272 3273 /* Connection accepted */ 3274 3275 ie = hci_inquiry_cache_lookup(hdev, &ev->bdaddr); 3276 if (ie) 3277 memcpy(ie->data.dev_class, ev->dev_class, 3); 3278 3279 conn = hci_conn_hash_lookup_ba(hdev, ev->link_type, 3280 &ev->bdaddr); 3281 if (!conn) { 3282 conn = hci_conn_add_unset(hdev, ev->link_type, &ev->bdaddr, 3283 HCI_ROLE_SLAVE); 3284 if (IS_ERR(conn)) { 3285 bt_dev_err(hdev, "connection err: %ld", PTR_ERR(conn)); 3286 goto unlock; 3287 } 3288 } 3289 3290 memcpy(conn->dev_class, ev->dev_class, 3); 3291 3292 hci_dev_unlock(hdev); 3293 3294 if (ev->link_type == ACL_LINK || 3295 (!(flags & HCI_PROTO_DEFER) && !lmp_esco_capable(hdev))) { 3296 struct hci_cp_accept_conn_req cp; 3297 conn->state = BT_CONNECT; 3298 3299 bacpy(&cp.bdaddr, &ev->bdaddr); 3300 3301 if (lmp_rswitch_capable(hdev) && (mask & HCI_LM_MASTER)) 3302 cp.role = 0x00; /* Become central */ 3303 else 3304 cp.role = 0x01; /* Remain peripheral */ 3305 3306 hci_send_cmd(hdev, HCI_OP_ACCEPT_CONN_REQ, sizeof(cp), &cp); 3307 } else if (!(flags & HCI_PROTO_DEFER)) { 3308 struct hci_cp_accept_sync_conn_req cp; 3309 conn->state = BT_CONNECT; 3310 3311 bacpy(&cp.bdaddr, &ev->bdaddr); 3312 cp.pkt_type = cpu_to_le16(conn->pkt_type); 3313 3314 cp.tx_bandwidth = cpu_to_le32(0x00001f40); 3315 cp.rx_bandwidth = cpu_to_le32(0x00001f40); 3316 cp.max_latency = cpu_to_le16(0xffff); 3317 cp.content_format = cpu_to_le16(hdev->voice_setting); 3318 cp.retrans_effort = 0xff; 3319 3320 hci_send_cmd(hdev, HCI_OP_ACCEPT_SYNC_CONN_REQ, sizeof(cp), 3321 &cp); 3322 } else { 3323 conn->state = BT_CONNECT2; 3324 hci_connect_cfm(conn, 0); 3325 } 3326 3327 return; 3328 unlock: 3329 hci_dev_unlock(hdev); 3330 } 3331 3332 static u8 hci_to_mgmt_reason(u8 err) 3333 { 3334 switch (err) { 3335 case HCI_ERROR_CONNECTION_TIMEOUT: 3336 return MGMT_DEV_DISCONN_TIMEOUT; 3337 case HCI_ERROR_REMOTE_USER_TERM: 3338 case HCI_ERROR_REMOTE_LOW_RESOURCES: 3339 case HCI_ERROR_REMOTE_POWER_OFF: 3340 return MGMT_DEV_DISCONN_REMOTE; 3341 case HCI_ERROR_LOCAL_HOST_TERM: 3342 return MGMT_DEV_DISCONN_LOCAL_HOST; 3343 default: 3344 return MGMT_DEV_DISCONN_UNKNOWN; 3345 } 3346 } 3347 3348 static void hci_disconn_complete_evt(struct hci_dev *hdev, void *data, 3349 struct sk_buff *skb) 3350 { 3351 struct hci_ev_disconn_complete *ev = data; 3352 u8 reason; 3353 struct hci_conn_params *params; 3354 struct hci_conn *conn; 3355 bool mgmt_connected; 3356 3357 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 3358 3359 hci_dev_lock(hdev); 3360 3361 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle)); 3362 if (!conn) 3363 goto unlock; 3364 3365 if (ev->status) { 3366 mgmt_disconnect_failed(hdev, &conn->dst, conn->type, 3367 conn->dst_type, ev->status); 3368 goto unlock; 3369 } 3370 3371 conn->state = BT_CLOSED; 3372 3373 mgmt_connected = test_and_clear_bit(HCI_CONN_MGMT_CONNECTED, &conn->flags); 3374 3375 if (test_bit(HCI_CONN_AUTH_FAILURE, &conn->flags)) 3376 reason = MGMT_DEV_DISCONN_AUTH_FAILURE; 3377 else 3378 reason = hci_to_mgmt_reason(ev->reason); 3379 3380 mgmt_device_disconnected(hdev, &conn->dst, conn->type, conn->dst_type, 3381 reason, mgmt_connected); 3382 3383 if (conn->type == ACL_LINK) { 3384 if (test_and_clear_bit(HCI_CONN_FLUSH_KEY, &conn->flags)) 3385 hci_remove_link_key(hdev, &conn->dst); 3386 3387 hci_update_scan(hdev); 3388 } 3389 3390 /* Re-enable passive scanning if disconnected device is marked 3391 * as auto-connectable. 3392 */ 3393 if (conn->type == LE_LINK) { 3394 params = hci_conn_params_lookup(hdev, &conn->dst, 3395 conn->dst_type); 3396 if (params) { 3397 switch (params->auto_connect) { 3398 case HCI_AUTO_CONN_LINK_LOSS: 3399 if (ev->reason != HCI_ERROR_CONNECTION_TIMEOUT) 3400 break; 3401 fallthrough; 3402 3403 case HCI_AUTO_CONN_DIRECT: 3404 case HCI_AUTO_CONN_ALWAYS: 3405 hci_pend_le_list_del_init(params); 3406 hci_pend_le_list_add(params, 3407 &hdev->pend_le_conns); 3408 hci_update_passive_scan(hdev); 3409 break; 3410 3411 default: 3412 break; 3413 } 3414 } 3415 } 3416 3417 hci_disconn_cfm(conn, ev->reason); 3418 3419 /* Re-enable advertising if necessary, since it might 3420 * have been disabled by the connection. From the 3421 * HCI_LE_Set_Advertise_Enable command description in 3422 * the core specification (v4.0): 3423 * "The Controller shall continue advertising until the Host 3424 * issues an LE_Set_Advertise_Enable command with 3425 * Advertising_Enable set to 0x00 (Advertising is disabled) 3426 * or until a connection is created or until the Advertising 3427 * is timed out due to Directed Advertising." 3428 */ 3429 if (conn->type == LE_LINK && conn->role == HCI_ROLE_SLAVE) { 3430 hdev->cur_adv_instance = conn->adv_instance; 3431 hci_enable_advertising(hdev); 3432 } 3433 3434 hci_conn_del(conn); 3435 3436 unlock: 3437 hci_dev_unlock(hdev); 3438 } 3439 3440 static void hci_auth_complete_evt(struct hci_dev *hdev, void *data, 3441 struct sk_buff *skb) 3442 { 3443 struct hci_ev_auth_complete *ev = data; 3444 struct hci_conn *conn; 3445 3446 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 3447 3448 hci_dev_lock(hdev); 3449 3450 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle)); 3451 if (!conn) 3452 goto unlock; 3453 3454 if (!ev->status) { 3455 clear_bit(HCI_CONN_AUTH_FAILURE, &conn->flags); 3456 set_bit(HCI_CONN_AUTH, &conn->flags); 3457 conn->sec_level = conn->pending_sec_level; 3458 } else { 3459 if (ev->status == HCI_ERROR_PIN_OR_KEY_MISSING) 3460 set_bit(HCI_CONN_AUTH_FAILURE, &conn->flags); 3461 3462 mgmt_auth_failed(conn, ev->status); 3463 } 3464 3465 clear_bit(HCI_CONN_AUTH_PEND, &conn->flags); 3466 3467 if (conn->state == BT_CONFIG) { 3468 if (!ev->status && hci_conn_ssp_enabled(conn)) { 3469 struct hci_cp_set_conn_encrypt cp; 3470 cp.handle = ev->handle; 3471 cp.encrypt = 0x01; 3472 hci_send_cmd(hdev, HCI_OP_SET_CONN_ENCRYPT, sizeof(cp), 3473 &cp); 3474 } else { 3475 conn->state = BT_CONNECTED; 3476 hci_connect_cfm(conn, ev->status); 3477 hci_conn_drop(conn); 3478 } 3479 } else { 3480 hci_auth_cfm(conn, ev->status); 3481 3482 hci_conn_hold(conn); 3483 conn->disc_timeout = HCI_DISCONN_TIMEOUT; 3484 hci_conn_drop(conn); 3485 } 3486 3487 if (test_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags)) { 3488 if (!ev->status) { 3489 struct hci_cp_set_conn_encrypt cp; 3490 cp.handle = ev->handle; 3491 cp.encrypt = 0x01; 3492 hci_send_cmd(hdev, HCI_OP_SET_CONN_ENCRYPT, sizeof(cp), 3493 &cp); 3494 } else { 3495 clear_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags); 3496 hci_encrypt_cfm(conn, ev->status); 3497 } 3498 } 3499 3500 unlock: 3501 hci_dev_unlock(hdev); 3502 } 3503 3504 static void hci_remote_name_evt(struct hci_dev *hdev, void *data, 3505 struct sk_buff *skb) 3506 { 3507 struct hci_ev_remote_name *ev = data; 3508 struct hci_conn *conn; 3509 3510 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 3511 3512 hci_dev_lock(hdev); 3513 3514 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr); 3515 3516 if (!hci_dev_test_flag(hdev, HCI_MGMT)) 3517 goto check_auth; 3518 3519 if (ev->status == 0) 3520 hci_check_pending_name(hdev, conn, &ev->bdaddr, ev->name, 3521 strnlen(ev->name, HCI_MAX_NAME_LENGTH)); 3522 else 3523 hci_check_pending_name(hdev, conn, &ev->bdaddr, NULL, 0); 3524 3525 check_auth: 3526 if (!conn) 3527 goto unlock; 3528 3529 if (!hci_outgoing_auth_needed(hdev, conn)) 3530 goto unlock; 3531 3532 if (!test_and_set_bit(HCI_CONN_AUTH_PEND, &conn->flags)) { 3533 struct hci_cp_auth_requested cp; 3534 3535 set_bit(HCI_CONN_AUTH_INITIATOR, &conn->flags); 3536 3537 cp.handle = __cpu_to_le16(conn->handle); 3538 hci_send_cmd(hdev, HCI_OP_AUTH_REQUESTED, sizeof(cp), &cp); 3539 } 3540 3541 unlock: 3542 hci_dev_unlock(hdev); 3543 } 3544 3545 static void hci_encrypt_change_evt(struct hci_dev *hdev, void *data, 3546 struct sk_buff *skb) 3547 { 3548 struct hci_ev_encrypt_change *ev = data; 3549 struct hci_conn *conn; 3550 3551 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 3552 3553 hci_dev_lock(hdev); 3554 3555 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle)); 3556 if (!conn) 3557 goto unlock; 3558 3559 if (!ev->status) { 3560 if (ev->encrypt) { 3561 /* Encryption implies authentication */ 3562 set_bit(HCI_CONN_AUTH, &conn->flags); 3563 set_bit(HCI_CONN_ENCRYPT, &conn->flags); 3564 conn->sec_level = conn->pending_sec_level; 3565 3566 /* P-256 authentication key implies FIPS */ 3567 if (conn->key_type == HCI_LK_AUTH_COMBINATION_P256) 3568 set_bit(HCI_CONN_FIPS, &conn->flags); 3569 3570 if ((conn->type == ACL_LINK && ev->encrypt == 0x02) || 3571 conn->type == LE_LINK) 3572 set_bit(HCI_CONN_AES_CCM, &conn->flags); 3573 } else { 3574 clear_bit(HCI_CONN_ENCRYPT, &conn->flags); 3575 clear_bit(HCI_CONN_AES_CCM, &conn->flags); 3576 } 3577 } 3578 3579 /* We should disregard the current RPA and generate a new one 3580 * whenever the encryption procedure fails. 3581 */ 3582 if (ev->status && conn->type == LE_LINK) { 3583 hci_dev_set_flag(hdev, HCI_RPA_EXPIRED); 3584 hci_adv_instances_set_rpa_expired(hdev, true); 3585 } 3586 3587 clear_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags); 3588 3589 /* Check link security requirements are met */ 3590 if (!hci_conn_check_link_mode(conn)) 3591 ev->status = HCI_ERROR_AUTH_FAILURE; 3592 3593 if (ev->status && conn->state == BT_CONNECTED) { 3594 if (ev->status == HCI_ERROR_PIN_OR_KEY_MISSING) 3595 set_bit(HCI_CONN_AUTH_FAILURE, &conn->flags); 3596 3597 /* Notify upper layers so they can cleanup before 3598 * disconnecting. 3599 */ 3600 hci_encrypt_cfm(conn, ev->status); 3601 hci_disconnect(conn, HCI_ERROR_AUTH_FAILURE); 3602 hci_conn_drop(conn); 3603 goto unlock; 3604 } 3605 3606 /* Try reading the encryption key size for encrypted ACL links */ 3607 if (!ev->status && ev->encrypt && conn->type == ACL_LINK) { 3608 if (hci_read_enc_key_size(hdev, conn)) 3609 goto notify; 3610 3611 goto unlock; 3612 } 3613 3614 /* We skip the WRITE_AUTH_PAYLOAD_TIMEOUT for ATS2851 based controllers 3615 * to avoid unexpected SMP command errors when pairing. 3616 */ 3617 if (hci_test_quirk(hdev, HCI_QUIRK_BROKEN_WRITE_AUTH_PAYLOAD_TIMEOUT)) 3618 goto notify; 3619 3620 /* Set the default Authenticated Payload Timeout after 3621 * an LE Link is established. As per Core Spec v5.0, Vol 2, Part B 3622 * Section 3.3, the HCI command WRITE_AUTH_PAYLOAD_TIMEOUT should be 3623 * sent when the link is active and Encryption is enabled, the conn 3624 * type can be either LE or ACL and controller must support LMP Ping. 3625 * Ensure for AES-CCM encryption as well. 3626 */ 3627 if (test_bit(HCI_CONN_ENCRYPT, &conn->flags) && 3628 test_bit(HCI_CONN_AES_CCM, &conn->flags) && 3629 ((conn->type == ACL_LINK && lmp_ping_capable(hdev)) || 3630 (conn->type == LE_LINK && (hdev->le_features[0] & HCI_LE_PING)))) { 3631 struct hci_cp_write_auth_payload_to cp; 3632 3633 cp.handle = cpu_to_le16(conn->handle); 3634 cp.timeout = cpu_to_le16(hdev->auth_payload_timeout); 3635 if (hci_send_cmd(conn->hdev, HCI_OP_WRITE_AUTH_PAYLOAD_TO, 3636 sizeof(cp), &cp)) 3637 bt_dev_err(hdev, "write auth payload timeout failed"); 3638 } 3639 3640 notify: 3641 hci_encrypt_cfm(conn, ev->status); 3642 3643 unlock: 3644 hci_dev_unlock(hdev); 3645 } 3646 3647 static void hci_change_link_key_complete_evt(struct hci_dev *hdev, void *data, 3648 struct sk_buff *skb) 3649 { 3650 struct hci_ev_change_link_key_complete *ev = data; 3651 struct hci_conn *conn; 3652 3653 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 3654 3655 hci_dev_lock(hdev); 3656 3657 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle)); 3658 if (conn) { 3659 if (!ev->status) 3660 set_bit(HCI_CONN_SECURE, &conn->flags); 3661 3662 clear_bit(HCI_CONN_AUTH_PEND, &conn->flags); 3663 3664 hci_key_change_cfm(conn, ev->status); 3665 } 3666 3667 hci_dev_unlock(hdev); 3668 } 3669 3670 static void hci_remote_features_evt(struct hci_dev *hdev, void *data, 3671 struct sk_buff *skb) 3672 { 3673 struct hci_ev_remote_features *ev = data; 3674 struct hci_conn *conn; 3675 3676 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 3677 3678 hci_dev_lock(hdev); 3679 3680 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle)); 3681 if (!conn) 3682 goto unlock; 3683 3684 if (!ev->status) 3685 memcpy(conn->features[0], ev->features, 8); 3686 3687 if (conn->state != BT_CONFIG) 3688 goto unlock; 3689 3690 if (!ev->status && lmp_ext_feat_capable(hdev) && 3691 lmp_ext_feat_capable(conn)) { 3692 struct hci_cp_read_remote_ext_features cp; 3693 cp.handle = ev->handle; 3694 cp.page = 0x01; 3695 hci_send_cmd(hdev, HCI_OP_READ_REMOTE_EXT_FEATURES, 3696 sizeof(cp), &cp); 3697 goto unlock; 3698 } 3699 3700 if (!ev->status) { 3701 struct hci_cp_remote_name_req cp; 3702 memset(&cp, 0, sizeof(cp)); 3703 bacpy(&cp.bdaddr, &conn->dst); 3704 cp.pscan_rep_mode = 0x02; 3705 hci_send_cmd(hdev, HCI_OP_REMOTE_NAME_REQ, sizeof(cp), &cp); 3706 } else { 3707 mgmt_device_connected(hdev, conn, NULL, 0); 3708 } 3709 3710 if (!hci_outgoing_auth_needed(hdev, conn)) { 3711 conn->state = BT_CONNECTED; 3712 hci_connect_cfm(conn, ev->status); 3713 hci_conn_drop(conn); 3714 } 3715 3716 unlock: 3717 hci_dev_unlock(hdev); 3718 } 3719 3720 static inline void handle_cmd_cnt_and_timer(struct hci_dev *hdev, u8 ncmd) 3721 { 3722 cancel_delayed_work(&hdev->cmd_timer); 3723 3724 rcu_read_lock(); 3725 if (!test_bit(HCI_RESET, &hdev->flags)) { 3726 if (ncmd) { 3727 cancel_delayed_work(&hdev->ncmd_timer); 3728 atomic_set(&hdev->cmd_cnt, 1); 3729 } else { 3730 if (!hci_dev_test_flag(hdev, HCI_CMD_DRAIN_WORKQUEUE)) 3731 queue_delayed_work(hdev->workqueue, &hdev->ncmd_timer, 3732 HCI_NCMD_TIMEOUT); 3733 } 3734 } 3735 rcu_read_unlock(); 3736 } 3737 3738 static u8 hci_cc_le_read_buffer_size_v2(struct hci_dev *hdev, void *data, 3739 struct sk_buff *skb) 3740 { 3741 struct hci_rp_le_read_buffer_size_v2 *rp = data; 3742 3743 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 3744 3745 if (rp->status) 3746 return rp->status; 3747 3748 hdev->le_mtu = __le16_to_cpu(rp->acl_mtu); 3749 hdev->le_pkts = rp->acl_max_pkt; 3750 hdev->iso_mtu = __le16_to_cpu(rp->iso_mtu); 3751 hdev->iso_pkts = rp->iso_max_pkt; 3752 3753 hdev->le_cnt = hdev->le_pkts; 3754 hdev->iso_cnt = hdev->iso_pkts; 3755 3756 BT_DBG("%s acl mtu %d:%d iso mtu %d:%d", hdev->name, hdev->acl_mtu, 3757 hdev->acl_pkts, hdev->iso_mtu, hdev->iso_pkts); 3758 3759 if (hdev->le_mtu && hdev->le_mtu < HCI_MIN_LE_MTU) 3760 return HCI_ERROR_INVALID_PARAMETERS; 3761 3762 return rp->status; 3763 } 3764 3765 static void hci_unbound_cis_failed(struct hci_dev *hdev, u8 cig, u8 status) 3766 { 3767 struct hci_conn *conn, *tmp; 3768 3769 lockdep_assert_held(&hdev->lock); 3770 3771 list_for_each_entry_safe(conn, tmp, &hdev->conn_hash.list, list) { 3772 if (conn->type != CIS_LINK || 3773 conn->state == BT_OPEN || conn->iso_qos.ucast.cig != cig) 3774 continue; 3775 3776 if (HCI_CONN_HANDLE_UNSET(conn->handle)) 3777 hci_conn_failed(conn, status); 3778 } 3779 } 3780 3781 static u8 hci_cc_le_set_cig_params(struct hci_dev *hdev, void *data, 3782 struct sk_buff *skb) 3783 { 3784 struct hci_rp_le_set_cig_params *rp = data; 3785 struct hci_cp_le_set_cig_params *cp; 3786 struct hci_conn *conn; 3787 u8 status = rp->status; 3788 bool pending = false; 3789 int i; 3790 3791 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 3792 3793 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_CIG_PARAMS); 3794 if (!rp->status && (!cp || rp->num_handles != cp->num_cis || 3795 rp->cig_id != cp->cig_id)) { 3796 bt_dev_err(hdev, "unexpected Set CIG Parameters response data"); 3797 status = HCI_ERROR_UNSPECIFIED; 3798 } 3799 3800 hci_dev_lock(hdev); 3801 3802 /* BLUETOOTH CORE SPECIFICATION Version 5.4 | Vol 4, Part E page 2554 3803 * 3804 * If the Status return parameter is non-zero, then the state of the CIG 3805 * and its CIS configurations shall not be changed by the command. If 3806 * the CIG did not already exist, it shall not be created. 3807 */ 3808 if (status) { 3809 /* Keep current configuration, fail only the unbound CIS */ 3810 hci_unbound_cis_failed(hdev, rp->cig_id, status); 3811 goto unlock; 3812 } 3813 3814 /* BLUETOOTH CORE SPECIFICATION Version 5.3 | Vol 4, Part E page 2553 3815 * 3816 * If the Status return parameter is zero, then the Controller shall 3817 * set the Connection_Handle arrayed return parameter to the connection 3818 * handle(s) corresponding to the CIS configurations specified in 3819 * the CIS_IDs command parameter, in the same order. 3820 */ 3821 for (i = 0; i < rp->num_handles; ++i) { 3822 conn = hci_conn_hash_lookup_cis(hdev, NULL, 0, rp->cig_id, 3823 cp->cis[i].cis_id); 3824 if (!conn || !bacmp(&conn->dst, BDADDR_ANY)) 3825 continue; 3826 3827 if (conn->state != BT_BOUND && conn->state != BT_CONNECT) 3828 continue; 3829 3830 if (hci_conn_set_handle(conn, __le16_to_cpu(rp->handle[i]))) 3831 continue; 3832 3833 if (conn->state == BT_CONNECT) 3834 pending = true; 3835 } 3836 3837 unlock: 3838 if (pending) 3839 hci_le_create_cis_pending(hdev); 3840 3841 hci_dev_unlock(hdev); 3842 3843 return rp->status; 3844 } 3845 3846 static u8 hci_cc_le_setup_iso_path(struct hci_dev *hdev, void *data, 3847 struct sk_buff *skb) 3848 { 3849 struct hci_rp_le_setup_iso_path *rp = data; 3850 struct hci_cp_le_setup_iso_path *cp; 3851 struct hci_conn *conn; 3852 3853 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 3854 3855 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SETUP_ISO_PATH); 3856 if (!cp) 3857 return rp->status; 3858 3859 hci_dev_lock(hdev); 3860 3861 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle)); 3862 if (!conn) 3863 goto unlock; 3864 3865 if (rp->status) { 3866 hci_connect_cfm(conn, rp->status); 3867 hci_conn_del(conn); 3868 goto unlock; 3869 } 3870 3871 switch (cp->direction) { 3872 /* Input (Host to Controller) */ 3873 case 0x00: 3874 /* Only confirm connection if output only */ 3875 if (conn->iso_qos.ucast.out.sdu && !conn->iso_qos.ucast.in.sdu) 3876 hci_connect_cfm(conn, rp->status); 3877 break; 3878 /* Output (Controller to Host) */ 3879 case 0x01: 3880 /* Confirm connection since conn->iso_qos is always configured 3881 * last. 3882 */ 3883 hci_connect_cfm(conn, rp->status); 3884 3885 /* Notify device connected in case it is a BIG Sync */ 3886 if (!rp->status && test_bit(HCI_CONN_BIG_SYNC, &conn->flags)) 3887 mgmt_device_connected(hdev, conn, NULL, 0); 3888 3889 break; 3890 } 3891 3892 unlock: 3893 hci_dev_unlock(hdev); 3894 return rp->status; 3895 } 3896 3897 static void hci_cs_le_create_big(struct hci_dev *hdev, u8 status) 3898 { 3899 bt_dev_dbg(hdev, "status 0x%2.2x", status); 3900 } 3901 3902 static u8 hci_cc_set_per_adv_param(struct hci_dev *hdev, void *data, 3903 struct sk_buff *skb) 3904 { 3905 struct hci_ev_status *rp = data; 3906 struct hci_cp_le_set_per_adv_params *cp; 3907 3908 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 3909 3910 if (rp->status) 3911 return rp->status; 3912 3913 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_PER_ADV_PARAMS); 3914 if (!cp) 3915 return rp->status; 3916 3917 /* TODO: set the conn state */ 3918 return rp->status; 3919 } 3920 3921 static u8 hci_cc_le_set_per_adv_enable(struct hci_dev *hdev, void *data, 3922 struct sk_buff *skb) 3923 { 3924 struct hci_ev_status *rp = data; 3925 struct hci_cp_le_set_per_adv_enable *cp; 3926 struct adv_info *adv = NULL, *n; 3927 u8 per_adv_cnt = 0; 3928 3929 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 3930 3931 if (rp->status) 3932 return rp->status; 3933 3934 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_PER_ADV_ENABLE); 3935 if (!cp) 3936 return rp->status; 3937 3938 hci_dev_lock(hdev); 3939 3940 adv = hci_find_adv_instance(hdev, cp->handle); 3941 3942 if (cp->enable) { 3943 hci_dev_set_flag(hdev, HCI_LE_PER_ADV); 3944 3945 if (adv) 3946 adv->enabled = true; 3947 } else { 3948 /* If just one instance was disabled check if there are 3949 * any other instance enabled before clearing HCI_LE_PER_ADV. 3950 * The current periodic adv instance will be marked as 3951 * disabled once extended advertising is also disabled. 3952 */ 3953 list_for_each_entry_safe(adv, n, &hdev->adv_instances, 3954 list) { 3955 if (adv->periodic && adv->enabled) 3956 per_adv_cnt++; 3957 } 3958 3959 if (per_adv_cnt > 1) 3960 goto unlock; 3961 3962 hci_dev_clear_flag(hdev, HCI_LE_PER_ADV); 3963 } 3964 3965 unlock: 3966 hci_dev_unlock(hdev); 3967 3968 return rp->status; 3969 } 3970 3971 #define HCI_CC_VL(_op, _func, _min, _max) \ 3972 { \ 3973 .op = _op, \ 3974 .func = _func, \ 3975 .min_len = _min, \ 3976 .max_len = _max, \ 3977 } 3978 3979 #define HCI_CC(_op, _func, _len) \ 3980 HCI_CC_VL(_op, _func, _len, _len) 3981 3982 #define HCI_CC_STATUS(_op, _func) \ 3983 HCI_CC(_op, _func, sizeof(struct hci_ev_status)) 3984 3985 static const struct hci_cc { 3986 u16 op; 3987 u8 (*func)(struct hci_dev *hdev, void *data, struct sk_buff *skb); 3988 u16 min_len; 3989 u16 max_len; 3990 } hci_cc_table[] = { 3991 HCI_CC_STATUS(HCI_OP_INQUIRY_CANCEL, hci_cc_inquiry_cancel), 3992 HCI_CC_STATUS(HCI_OP_PERIODIC_INQ, hci_cc_periodic_inq), 3993 HCI_CC_STATUS(HCI_OP_EXIT_PERIODIC_INQ, hci_cc_exit_periodic_inq), 3994 HCI_CC(HCI_OP_REMOTE_NAME_REQ_CANCEL, hci_cc_remote_name_req_cancel, 3995 sizeof(struct hci_rp_remote_name_req_cancel)), 3996 HCI_CC(HCI_OP_ROLE_DISCOVERY, hci_cc_role_discovery, 3997 sizeof(struct hci_rp_role_discovery)), 3998 HCI_CC(HCI_OP_READ_LINK_POLICY, hci_cc_read_link_policy, 3999 sizeof(struct hci_rp_read_link_policy)), 4000 HCI_CC(HCI_OP_WRITE_LINK_POLICY, hci_cc_write_link_policy, 4001 sizeof(struct hci_rp_write_link_policy)), 4002 HCI_CC(HCI_OP_READ_DEF_LINK_POLICY, hci_cc_read_def_link_policy, 4003 sizeof(struct hci_rp_read_def_link_policy)), 4004 HCI_CC_STATUS(HCI_OP_WRITE_DEF_LINK_POLICY, 4005 hci_cc_write_def_link_policy), 4006 HCI_CC_STATUS(HCI_OP_RESET, hci_cc_reset), 4007 HCI_CC(HCI_OP_READ_STORED_LINK_KEY, hci_cc_read_stored_link_key, 4008 sizeof(struct hci_rp_read_stored_link_key)), 4009 HCI_CC(HCI_OP_DELETE_STORED_LINK_KEY, hci_cc_delete_stored_link_key, 4010 sizeof(struct hci_rp_delete_stored_link_key)), 4011 HCI_CC_STATUS(HCI_OP_WRITE_LOCAL_NAME, hci_cc_write_local_name), 4012 HCI_CC(HCI_OP_READ_LOCAL_NAME, hci_cc_read_local_name, 4013 sizeof(struct hci_rp_read_local_name)), 4014 HCI_CC_STATUS(HCI_OP_WRITE_AUTH_ENABLE, hci_cc_write_auth_enable), 4015 HCI_CC_STATUS(HCI_OP_WRITE_ENCRYPT_MODE, hci_cc_write_encrypt_mode), 4016 HCI_CC_STATUS(HCI_OP_WRITE_SCAN_ENABLE, hci_cc_write_scan_enable), 4017 HCI_CC_STATUS(HCI_OP_SET_EVENT_FLT, hci_cc_set_event_filter), 4018 HCI_CC(HCI_OP_READ_CLASS_OF_DEV, hci_cc_read_class_of_dev, 4019 sizeof(struct hci_rp_read_class_of_dev)), 4020 HCI_CC_STATUS(HCI_OP_WRITE_CLASS_OF_DEV, hci_cc_write_class_of_dev), 4021 HCI_CC(HCI_OP_READ_VOICE_SETTING, hci_cc_read_voice_setting, 4022 sizeof(struct hci_rp_read_voice_setting)), 4023 HCI_CC_STATUS(HCI_OP_WRITE_VOICE_SETTING, hci_cc_write_voice_setting), 4024 HCI_CC(HCI_OP_READ_NUM_SUPPORTED_IAC, hci_cc_read_num_supported_iac, 4025 sizeof(struct hci_rp_read_num_supported_iac)), 4026 HCI_CC_STATUS(HCI_OP_WRITE_SSP_MODE, hci_cc_write_ssp_mode), 4027 HCI_CC_STATUS(HCI_OP_WRITE_SC_SUPPORT, hci_cc_write_sc_support), 4028 HCI_CC(HCI_OP_READ_AUTH_PAYLOAD_TO, hci_cc_read_auth_payload_timeout, 4029 sizeof(struct hci_rp_read_auth_payload_to)), 4030 HCI_CC(HCI_OP_WRITE_AUTH_PAYLOAD_TO, hci_cc_write_auth_payload_timeout, 4031 sizeof(struct hci_rp_write_auth_payload_to)), 4032 HCI_CC(HCI_OP_READ_LOCAL_VERSION, hci_cc_read_local_version, 4033 sizeof(struct hci_rp_read_local_version)), 4034 HCI_CC(HCI_OP_READ_LOCAL_COMMANDS, hci_cc_read_local_commands, 4035 sizeof(struct hci_rp_read_local_commands)), 4036 HCI_CC(HCI_OP_READ_LOCAL_FEATURES, hci_cc_read_local_features, 4037 sizeof(struct hci_rp_read_local_features)), 4038 HCI_CC(HCI_OP_READ_LOCAL_EXT_FEATURES, hci_cc_read_local_ext_features, 4039 sizeof(struct hci_rp_read_local_ext_features)), 4040 HCI_CC(HCI_OP_READ_BUFFER_SIZE, hci_cc_read_buffer_size, 4041 sizeof(struct hci_rp_read_buffer_size)), 4042 HCI_CC(HCI_OP_READ_BD_ADDR, hci_cc_read_bd_addr, 4043 sizeof(struct hci_rp_read_bd_addr)), 4044 HCI_CC(HCI_OP_READ_LOCAL_PAIRING_OPTS, hci_cc_read_local_pairing_opts, 4045 sizeof(struct hci_rp_read_local_pairing_opts)), 4046 HCI_CC(HCI_OP_READ_PAGE_SCAN_ACTIVITY, hci_cc_read_page_scan_activity, 4047 sizeof(struct hci_rp_read_page_scan_activity)), 4048 HCI_CC_STATUS(HCI_OP_WRITE_PAGE_SCAN_ACTIVITY, 4049 hci_cc_write_page_scan_activity), 4050 HCI_CC(HCI_OP_READ_PAGE_SCAN_TYPE, hci_cc_read_page_scan_type, 4051 sizeof(struct hci_rp_read_page_scan_type)), 4052 HCI_CC_STATUS(HCI_OP_WRITE_PAGE_SCAN_TYPE, hci_cc_write_page_scan_type), 4053 HCI_CC(HCI_OP_READ_CLOCK, hci_cc_read_clock, 4054 sizeof(struct hci_rp_read_clock)), 4055 HCI_CC(HCI_OP_READ_ENC_KEY_SIZE, hci_cc_read_enc_key_size, 4056 sizeof(struct hci_rp_read_enc_key_size)), 4057 HCI_CC(HCI_OP_READ_INQ_RSP_TX_POWER, hci_cc_read_inq_rsp_tx_power, 4058 sizeof(struct hci_rp_read_inq_rsp_tx_power)), 4059 HCI_CC(HCI_OP_READ_DEF_ERR_DATA_REPORTING, 4060 hci_cc_read_def_err_data_reporting, 4061 sizeof(struct hci_rp_read_def_err_data_reporting)), 4062 HCI_CC_STATUS(HCI_OP_WRITE_DEF_ERR_DATA_REPORTING, 4063 hci_cc_write_def_err_data_reporting), 4064 HCI_CC(HCI_OP_PIN_CODE_REPLY, hci_cc_pin_code_reply, 4065 sizeof(struct hci_rp_pin_code_reply)), 4066 HCI_CC(HCI_OP_PIN_CODE_NEG_REPLY, hci_cc_pin_code_neg_reply, 4067 sizeof(struct hci_rp_pin_code_neg_reply)), 4068 HCI_CC(HCI_OP_READ_LOCAL_OOB_DATA, hci_cc_read_local_oob_data, 4069 sizeof(struct hci_rp_read_local_oob_data)), 4070 HCI_CC(HCI_OP_READ_LOCAL_OOB_EXT_DATA, hci_cc_read_local_oob_ext_data, 4071 sizeof(struct hci_rp_read_local_oob_ext_data)), 4072 HCI_CC(HCI_OP_LE_READ_BUFFER_SIZE, hci_cc_le_read_buffer_size, 4073 sizeof(struct hci_rp_le_read_buffer_size)), 4074 HCI_CC(HCI_OP_LE_READ_LOCAL_FEATURES, hci_cc_le_read_local_features, 4075 sizeof(struct hci_rp_le_read_local_features)), 4076 HCI_CC(HCI_OP_LE_READ_ADV_TX_POWER, hci_cc_le_read_adv_tx_power, 4077 sizeof(struct hci_rp_le_read_adv_tx_power)), 4078 HCI_CC(HCI_OP_USER_CONFIRM_REPLY, hci_cc_user_confirm_reply, 4079 sizeof(struct hci_rp_user_confirm_reply)), 4080 HCI_CC(HCI_OP_USER_CONFIRM_NEG_REPLY, hci_cc_user_confirm_neg_reply, 4081 sizeof(struct hci_rp_user_confirm_reply)), 4082 HCI_CC(HCI_OP_USER_PASSKEY_REPLY, hci_cc_user_passkey_reply, 4083 sizeof(struct hci_rp_user_confirm_reply)), 4084 HCI_CC(HCI_OP_USER_PASSKEY_NEG_REPLY, hci_cc_user_passkey_neg_reply, 4085 sizeof(struct hci_rp_user_confirm_reply)), 4086 HCI_CC_STATUS(HCI_OP_LE_SET_RANDOM_ADDR, hci_cc_le_set_random_addr), 4087 HCI_CC_STATUS(HCI_OP_LE_SET_ADV_ENABLE, hci_cc_le_set_adv_enable), 4088 HCI_CC_STATUS(HCI_OP_LE_SET_SCAN_PARAM, hci_cc_le_set_scan_param), 4089 HCI_CC_STATUS(HCI_OP_LE_SET_SCAN_ENABLE, hci_cc_le_set_scan_enable), 4090 HCI_CC(HCI_OP_LE_READ_ACCEPT_LIST_SIZE, 4091 hci_cc_le_read_accept_list_size, 4092 sizeof(struct hci_rp_le_read_accept_list_size)), 4093 HCI_CC_STATUS(HCI_OP_LE_CLEAR_ACCEPT_LIST, hci_cc_le_clear_accept_list), 4094 HCI_CC_STATUS(HCI_OP_LE_ADD_TO_ACCEPT_LIST, 4095 hci_cc_le_add_to_accept_list), 4096 HCI_CC_STATUS(HCI_OP_LE_DEL_FROM_ACCEPT_LIST, 4097 hci_cc_le_del_from_accept_list), 4098 HCI_CC(HCI_OP_LE_READ_SUPPORTED_STATES, hci_cc_le_read_supported_states, 4099 sizeof(struct hci_rp_le_read_supported_states)), 4100 HCI_CC(HCI_OP_LE_READ_DEF_DATA_LEN, hci_cc_le_read_def_data_len, 4101 sizeof(struct hci_rp_le_read_def_data_len)), 4102 HCI_CC_STATUS(HCI_OP_LE_WRITE_DEF_DATA_LEN, 4103 hci_cc_le_write_def_data_len), 4104 HCI_CC_STATUS(HCI_OP_LE_ADD_TO_RESOLV_LIST, 4105 hci_cc_le_add_to_resolv_list), 4106 HCI_CC_STATUS(HCI_OP_LE_DEL_FROM_RESOLV_LIST, 4107 hci_cc_le_del_from_resolv_list), 4108 HCI_CC_STATUS(HCI_OP_LE_CLEAR_RESOLV_LIST, 4109 hci_cc_le_clear_resolv_list), 4110 HCI_CC(HCI_OP_LE_READ_RESOLV_LIST_SIZE, hci_cc_le_read_resolv_list_size, 4111 sizeof(struct hci_rp_le_read_resolv_list_size)), 4112 HCI_CC_STATUS(HCI_OP_LE_SET_ADDR_RESOLV_ENABLE, 4113 hci_cc_le_set_addr_resolution_enable), 4114 HCI_CC(HCI_OP_LE_READ_MAX_DATA_LEN, hci_cc_le_read_max_data_len, 4115 sizeof(struct hci_rp_le_read_max_data_len)), 4116 HCI_CC_STATUS(HCI_OP_WRITE_LE_HOST_SUPPORTED, 4117 hci_cc_write_le_host_supported), 4118 HCI_CC_STATUS(HCI_OP_LE_SET_ADV_PARAM, hci_cc_set_adv_param), 4119 HCI_CC(HCI_OP_READ_RSSI, hci_cc_read_rssi, 4120 sizeof(struct hci_rp_read_rssi)), 4121 HCI_CC(HCI_OP_READ_TX_POWER, hci_cc_read_tx_power, 4122 sizeof(struct hci_rp_read_tx_power)), 4123 HCI_CC_STATUS(HCI_OP_WRITE_SSP_DEBUG_MODE, hci_cc_write_ssp_debug_mode), 4124 HCI_CC_STATUS(HCI_OP_LE_SET_EXT_SCAN_PARAMS, 4125 hci_cc_le_set_ext_scan_param), 4126 HCI_CC_STATUS(HCI_OP_LE_SET_EXT_SCAN_ENABLE, 4127 hci_cc_le_set_ext_scan_enable), 4128 HCI_CC_STATUS(HCI_OP_LE_SET_DEFAULT_PHY, hci_cc_le_set_default_phy), 4129 HCI_CC(HCI_OP_LE_READ_NUM_SUPPORTED_ADV_SETS, 4130 hci_cc_le_read_num_adv_sets, 4131 sizeof(struct hci_rp_le_read_num_supported_adv_sets)), 4132 HCI_CC_STATUS(HCI_OP_LE_SET_EXT_ADV_ENABLE, 4133 hci_cc_le_set_ext_adv_enable), 4134 HCI_CC_STATUS(HCI_OP_LE_SET_ADV_SET_RAND_ADDR, 4135 hci_cc_le_set_adv_set_random_addr), 4136 HCI_CC_STATUS(HCI_OP_LE_REMOVE_ADV_SET, hci_cc_le_remove_adv_set), 4137 HCI_CC_STATUS(HCI_OP_LE_CLEAR_ADV_SETS, hci_cc_le_clear_adv_sets), 4138 HCI_CC_STATUS(HCI_OP_LE_SET_PER_ADV_PARAMS, hci_cc_set_per_adv_param), 4139 HCI_CC_STATUS(HCI_OP_LE_SET_PER_ADV_ENABLE, 4140 hci_cc_le_set_per_adv_enable), 4141 HCI_CC(HCI_OP_LE_READ_TRANSMIT_POWER, hci_cc_le_read_transmit_power, 4142 sizeof(struct hci_rp_le_read_transmit_power)), 4143 HCI_CC_STATUS(HCI_OP_LE_SET_PRIVACY_MODE, hci_cc_le_set_privacy_mode), 4144 HCI_CC(HCI_OP_LE_READ_BUFFER_SIZE_V2, hci_cc_le_read_buffer_size_v2, 4145 sizeof(struct hci_rp_le_read_buffer_size_v2)), 4146 HCI_CC_VL(HCI_OP_LE_SET_CIG_PARAMS, hci_cc_le_set_cig_params, 4147 sizeof(struct hci_rp_le_set_cig_params), HCI_MAX_EVENT_SIZE), 4148 HCI_CC(HCI_OP_LE_SETUP_ISO_PATH, hci_cc_le_setup_iso_path, 4149 sizeof(struct hci_rp_le_setup_iso_path)), 4150 }; 4151 4152 static u8 hci_cc_func(struct hci_dev *hdev, const struct hci_cc *cc, 4153 struct sk_buff *skb) 4154 { 4155 void *data; 4156 4157 if (skb->len < cc->min_len) { 4158 bt_dev_err(hdev, "unexpected cc 0x%4.4x length: %u < %u", 4159 cc->op, skb->len, cc->min_len); 4160 return HCI_ERROR_UNSPECIFIED; 4161 } 4162 4163 /* Just warn if the length is over max_len size it still be possible to 4164 * partially parse the cc so leave to callback to decide if that is 4165 * acceptable. 4166 */ 4167 if (skb->len > cc->max_len) 4168 bt_dev_warn(hdev, "unexpected cc 0x%4.4x length: %u > %u", 4169 cc->op, skb->len, cc->max_len); 4170 4171 data = hci_cc_skb_pull(hdev, skb, cc->op, cc->min_len); 4172 if (!data) 4173 return HCI_ERROR_UNSPECIFIED; 4174 4175 return cc->func(hdev, data, skb); 4176 } 4177 4178 static void hci_cmd_complete_evt(struct hci_dev *hdev, void *data, 4179 struct sk_buff *skb, u16 *opcode, u8 *status, 4180 hci_req_complete_t *req_complete, 4181 hci_req_complete_skb_t *req_complete_skb) 4182 { 4183 struct hci_ev_cmd_complete *ev = data; 4184 int i; 4185 4186 *opcode = __le16_to_cpu(ev->opcode); 4187 4188 bt_dev_dbg(hdev, "opcode 0x%4.4x", *opcode); 4189 4190 for (i = 0; i < ARRAY_SIZE(hci_cc_table); i++) { 4191 if (hci_cc_table[i].op == *opcode) { 4192 *status = hci_cc_func(hdev, &hci_cc_table[i], skb); 4193 break; 4194 } 4195 } 4196 4197 if (i == ARRAY_SIZE(hci_cc_table)) { 4198 /* Unknown opcode, assume byte 0 contains the status, so 4199 * that e.g. __hci_cmd_sync() properly returns errors 4200 * for vendor specific commands send by HCI drivers. 4201 * If a vendor doesn't actually follow this convention we may 4202 * need to introduce a vendor CC table in order to properly set 4203 * the status. 4204 */ 4205 *status = skb->data[0]; 4206 } 4207 4208 handle_cmd_cnt_and_timer(hdev, ev->ncmd); 4209 4210 hci_req_cmd_complete(hdev, *opcode, *status, req_complete, 4211 req_complete_skb); 4212 4213 if (hci_dev_test_flag(hdev, HCI_CMD_PENDING)) { 4214 bt_dev_err(hdev, 4215 "unexpected event for opcode 0x%4.4x", *opcode); 4216 return; 4217 } 4218 4219 if (atomic_read(&hdev->cmd_cnt) && !skb_queue_empty(&hdev->cmd_q)) 4220 queue_work(hdev->workqueue, &hdev->cmd_work); 4221 } 4222 4223 static void hci_cs_le_create_cis(struct hci_dev *hdev, u8 status) 4224 { 4225 struct hci_cp_le_create_cis *cp; 4226 bool pending = false; 4227 int i; 4228 4229 bt_dev_dbg(hdev, "status 0x%2.2x", status); 4230 4231 if (!status) 4232 return; 4233 4234 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_CREATE_CIS); 4235 if (!cp) 4236 return; 4237 4238 hci_dev_lock(hdev); 4239 4240 /* Remove connection if command failed */ 4241 for (i = 0; i < cp->num_cis; i++) { 4242 struct hci_conn *conn; 4243 u16 handle; 4244 4245 handle = __le16_to_cpu(cp->cis[i].cis_handle); 4246 4247 conn = hci_conn_hash_lookup_handle(hdev, handle); 4248 if (conn) { 4249 if (test_and_clear_bit(HCI_CONN_CREATE_CIS, 4250 &conn->flags)) 4251 pending = true; 4252 conn->state = BT_CLOSED; 4253 hci_connect_cfm(conn, status); 4254 hci_conn_del(conn); 4255 } 4256 } 4257 cp->num_cis = 0; 4258 4259 if (pending) 4260 hci_le_create_cis_pending(hdev); 4261 4262 hci_dev_unlock(hdev); 4263 } 4264 4265 #define HCI_CS(_op, _func) \ 4266 { \ 4267 .op = _op, \ 4268 .func = _func, \ 4269 } 4270 4271 static const struct hci_cs { 4272 u16 op; 4273 void (*func)(struct hci_dev *hdev, __u8 status); 4274 } hci_cs_table[] = { 4275 HCI_CS(HCI_OP_INQUIRY, hci_cs_inquiry), 4276 HCI_CS(HCI_OP_CREATE_CONN, hci_cs_create_conn), 4277 HCI_CS(HCI_OP_DISCONNECT, hci_cs_disconnect), 4278 HCI_CS(HCI_OP_ADD_SCO, hci_cs_add_sco), 4279 HCI_CS(HCI_OP_AUTH_REQUESTED, hci_cs_auth_requested), 4280 HCI_CS(HCI_OP_SET_CONN_ENCRYPT, hci_cs_set_conn_encrypt), 4281 HCI_CS(HCI_OP_REMOTE_NAME_REQ, hci_cs_remote_name_req), 4282 HCI_CS(HCI_OP_READ_REMOTE_FEATURES, hci_cs_read_remote_features), 4283 HCI_CS(HCI_OP_READ_REMOTE_EXT_FEATURES, 4284 hci_cs_read_remote_ext_features), 4285 HCI_CS(HCI_OP_SETUP_SYNC_CONN, hci_cs_setup_sync_conn), 4286 HCI_CS(HCI_OP_ENHANCED_SETUP_SYNC_CONN, 4287 hci_cs_enhanced_setup_sync_conn), 4288 HCI_CS(HCI_OP_SNIFF_MODE, hci_cs_sniff_mode), 4289 HCI_CS(HCI_OP_EXIT_SNIFF_MODE, hci_cs_exit_sniff_mode), 4290 HCI_CS(HCI_OP_SWITCH_ROLE, hci_cs_switch_role), 4291 HCI_CS(HCI_OP_LE_CREATE_CONN, hci_cs_le_create_conn), 4292 HCI_CS(HCI_OP_LE_READ_REMOTE_FEATURES, hci_cs_le_read_remote_features), 4293 HCI_CS(HCI_OP_LE_START_ENC, hci_cs_le_start_enc), 4294 HCI_CS(HCI_OP_LE_EXT_CREATE_CONN, hci_cs_le_ext_create_conn), 4295 HCI_CS(HCI_OP_LE_CREATE_CIS, hci_cs_le_create_cis), 4296 HCI_CS(HCI_OP_LE_CREATE_BIG, hci_cs_le_create_big), 4297 }; 4298 4299 static void hci_cmd_status_evt(struct hci_dev *hdev, void *data, 4300 struct sk_buff *skb, u16 *opcode, u8 *status, 4301 hci_req_complete_t *req_complete, 4302 hci_req_complete_skb_t *req_complete_skb) 4303 { 4304 struct hci_ev_cmd_status *ev = data; 4305 int i; 4306 4307 *opcode = __le16_to_cpu(ev->opcode); 4308 *status = ev->status; 4309 4310 bt_dev_dbg(hdev, "opcode 0x%4.4x", *opcode); 4311 4312 for (i = 0; i < ARRAY_SIZE(hci_cs_table); i++) { 4313 if (hci_cs_table[i].op == *opcode) { 4314 hci_cs_table[i].func(hdev, ev->status); 4315 break; 4316 } 4317 } 4318 4319 handle_cmd_cnt_and_timer(hdev, ev->ncmd); 4320 4321 /* Indicate request completion if the command failed. Also, if 4322 * we're not waiting for a special event and we get a success 4323 * command status we should try to flag the request as completed 4324 * (since for this kind of commands there will not be a command 4325 * complete event). 4326 */ 4327 if (ev->status || (hdev->req_skb && !hci_skb_event(hdev->req_skb))) { 4328 hci_req_cmd_complete(hdev, *opcode, ev->status, req_complete, 4329 req_complete_skb); 4330 if (hci_dev_test_flag(hdev, HCI_CMD_PENDING)) { 4331 bt_dev_err(hdev, "unexpected event for opcode 0x%4.4x", 4332 *opcode); 4333 return; 4334 } 4335 } 4336 4337 if (atomic_read(&hdev->cmd_cnt) && !skb_queue_empty(&hdev->cmd_q)) 4338 queue_work(hdev->workqueue, &hdev->cmd_work); 4339 } 4340 4341 static void hci_hardware_error_evt(struct hci_dev *hdev, void *data, 4342 struct sk_buff *skb) 4343 { 4344 struct hci_ev_hardware_error *ev = data; 4345 4346 bt_dev_dbg(hdev, "code 0x%2.2x", ev->code); 4347 4348 hdev->hw_error_code = ev->code; 4349 4350 queue_work(hdev->req_workqueue, &hdev->error_reset); 4351 } 4352 4353 static void hci_role_change_evt(struct hci_dev *hdev, void *data, 4354 struct sk_buff *skb) 4355 { 4356 struct hci_ev_role_change *ev = data; 4357 struct hci_conn *conn; 4358 4359 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 4360 4361 hci_dev_lock(hdev); 4362 4363 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr); 4364 if (conn) { 4365 if (!ev->status) 4366 conn->role = ev->role; 4367 4368 clear_bit(HCI_CONN_RSWITCH_PEND, &conn->flags); 4369 4370 hci_role_switch_cfm(conn, ev->status, ev->role); 4371 } 4372 4373 hci_dev_unlock(hdev); 4374 } 4375 4376 static void hci_num_comp_pkts_evt(struct hci_dev *hdev, void *data, 4377 struct sk_buff *skb) 4378 { 4379 struct hci_ev_num_comp_pkts *ev = data; 4380 int i; 4381 4382 if (!hci_ev_skb_pull(hdev, skb, HCI_EV_NUM_COMP_PKTS, 4383 flex_array_size(ev, handles, ev->num))) 4384 return; 4385 4386 bt_dev_dbg(hdev, "num %d", ev->num); 4387 4388 for (i = 0; i < ev->num; i++) { 4389 struct hci_comp_pkts_info *info = &ev->handles[i]; 4390 struct hci_conn *conn; 4391 __u16 handle, count; 4392 unsigned int i; 4393 4394 handle = __le16_to_cpu(info->handle); 4395 count = __le16_to_cpu(info->count); 4396 4397 conn = hci_conn_hash_lookup_handle(hdev, handle); 4398 if (!conn) 4399 continue; 4400 4401 conn->sent -= count; 4402 4403 for (i = 0; i < count; ++i) 4404 hci_conn_tx_dequeue(conn); 4405 4406 switch (conn->type) { 4407 case ACL_LINK: 4408 hdev->acl_cnt += count; 4409 if (hdev->acl_cnt > hdev->acl_pkts) 4410 hdev->acl_cnt = hdev->acl_pkts; 4411 break; 4412 4413 case LE_LINK: 4414 if (hdev->le_pkts) { 4415 hdev->le_cnt += count; 4416 if (hdev->le_cnt > hdev->le_pkts) 4417 hdev->le_cnt = hdev->le_pkts; 4418 } else { 4419 hdev->acl_cnt += count; 4420 if (hdev->acl_cnt > hdev->acl_pkts) 4421 hdev->acl_cnt = hdev->acl_pkts; 4422 } 4423 break; 4424 4425 case SCO_LINK: 4426 case ESCO_LINK: 4427 hdev->sco_cnt += count; 4428 if (hdev->sco_cnt > hdev->sco_pkts) 4429 hdev->sco_cnt = hdev->sco_pkts; 4430 4431 break; 4432 4433 case CIS_LINK: 4434 case BIS_LINK: 4435 if (hdev->iso_pkts) { 4436 hdev->iso_cnt += count; 4437 if (hdev->iso_cnt > hdev->iso_pkts) 4438 hdev->iso_cnt = hdev->iso_pkts; 4439 } else if (hdev->le_pkts) { 4440 hdev->le_cnt += count; 4441 if (hdev->le_cnt > hdev->le_pkts) 4442 hdev->le_cnt = hdev->le_pkts; 4443 } else { 4444 hdev->acl_cnt += count; 4445 if (hdev->acl_cnt > hdev->acl_pkts) 4446 hdev->acl_cnt = hdev->acl_pkts; 4447 } 4448 break; 4449 4450 default: 4451 bt_dev_err(hdev, "unknown type %d conn %p", 4452 conn->type, conn); 4453 break; 4454 } 4455 } 4456 4457 queue_work(hdev->workqueue, &hdev->tx_work); 4458 } 4459 4460 static void hci_mode_change_evt(struct hci_dev *hdev, void *data, 4461 struct sk_buff *skb) 4462 { 4463 struct hci_ev_mode_change *ev = data; 4464 struct hci_conn *conn; 4465 4466 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 4467 4468 hci_dev_lock(hdev); 4469 4470 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle)); 4471 if (conn) { 4472 conn->mode = ev->mode; 4473 4474 if (!test_and_clear_bit(HCI_CONN_MODE_CHANGE_PEND, 4475 &conn->flags)) { 4476 if (conn->mode == HCI_CM_ACTIVE) 4477 set_bit(HCI_CONN_POWER_SAVE, &conn->flags); 4478 else 4479 clear_bit(HCI_CONN_POWER_SAVE, &conn->flags); 4480 } 4481 4482 if (test_and_clear_bit(HCI_CONN_SCO_SETUP_PEND, &conn->flags)) 4483 hci_sco_setup(conn, ev->status); 4484 } 4485 4486 hci_dev_unlock(hdev); 4487 } 4488 4489 static void hci_pin_code_request_evt(struct hci_dev *hdev, void *data, 4490 struct sk_buff *skb) 4491 { 4492 struct hci_ev_pin_code_req *ev = data; 4493 struct hci_conn *conn; 4494 4495 bt_dev_dbg(hdev, ""); 4496 4497 hci_dev_lock(hdev); 4498 4499 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr); 4500 if (!conn) 4501 goto unlock; 4502 4503 if (conn->state == BT_CONNECTED) { 4504 hci_conn_hold(conn); 4505 conn->disc_timeout = HCI_PAIRING_TIMEOUT; 4506 hci_conn_drop(conn); 4507 } 4508 4509 if (!hci_dev_test_flag(hdev, HCI_BONDABLE) && 4510 !test_bit(HCI_CONN_AUTH_INITIATOR, &conn->flags)) { 4511 hci_send_cmd(hdev, HCI_OP_PIN_CODE_NEG_REPLY, 4512 sizeof(ev->bdaddr), &ev->bdaddr); 4513 } else if (hci_dev_test_flag(hdev, HCI_MGMT)) { 4514 u8 secure; 4515 4516 if (conn->pending_sec_level == BT_SECURITY_HIGH) 4517 secure = 1; 4518 else 4519 secure = 0; 4520 4521 mgmt_pin_code_request(hdev, &ev->bdaddr, secure); 4522 } 4523 4524 unlock: 4525 hci_dev_unlock(hdev); 4526 } 4527 4528 static void conn_set_key(struct hci_conn *conn, u8 key_type, u8 pin_len) 4529 { 4530 if (key_type == HCI_LK_CHANGED_COMBINATION) 4531 return; 4532 4533 conn->pin_length = pin_len; 4534 conn->key_type = key_type; 4535 4536 switch (key_type) { 4537 case HCI_LK_LOCAL_UNIT: 4538 case HCI_LK_REMOTE_UNIT: 4539 case HCI_LK_DEBUG_COMBINATION: 4540 return; 4541 case HCI_LK_COMBINATION: 4542 if (pin_len == 16) 4543 conn->pending_sec_level = BT_SECURITY_HIGH; 4544 else 4545 conn->pending_sec_level = BT_SECURITY_MEDIUM; 4546 break; 4547 case HCI_LK_UNAUTH_COMBINATION_P192: 4548 case HCI_LK_UNAUTH_COMBINATION_P256: 4549 conn->pending_sec_level = BT_SECURITY_MEDIUM; 4550 break; 4551 case HCI_LK_AUTH_COMBINATION_P192: 4552 conn->pending_sec_level = BT_SECURITY_HIGH; 4553 break; 4554 case HCI_LK_AUTH_COMBINATION_P256: 4555 conn->pending_sec_level = BT_SECURITY_FIPS; 4556 break; 4557 } 4558 } 4559 4560 static void hci_link_key_request_evt(struct hci_dev *hdev, void *data, 4561 struct sk_buff *skb) 4562 { 4563 struct hci_ev_link_key_req *ev = data; 4564 struct hci_cp_link_key_reply cp; 4565 struct hci_conn *conn; 4566 struct link_key *key; 4567 4568 bt_dev_dbg(hdev, ""); 4569 4570 if (!hci_dev_test_flag(hdev, HCI_MGMT)) 4571 return; 4572 4573 hci_dev_lock(hdev); 4574 4575 key = hci_find_link_key(hdev, &ev->bdaddr); 4576 if (!key) { 4577 bt_dev_dbg(hdev, "link key not found for %pMR", &ev->bdaddr); 4578 goto not_found; 4579 } 4580 4581 bt_dev_dbg(hdev, "found key type %u for %pMR", key->type, &ev->bdaddr); 4582 4583 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr); 4584 if (conn) { 4585 clear_bit(HCI_CONN_NEW_LINK_KEY, &conn->flags); 4586 4587 if ((key->type == HCI_LK_UNAUTH_COMBINATION_P192 || 4588 key->type == HCI_LK_UNAUTH_COMBINATION_P256) && 4589 conn->auth_type != 0xff && (conn->auth_type & 0x01)) { 4590 bt_dev_dbg(hdev, "ignoring unauthenticated key"); 4591 goto not_found; 4592 } 4593 4594 if (key->type == HCI_LK_COMBINATION && key->pin_len < 16 && 4595 (conn->pending_sec_level == BT_SECURITY_HIGH || 4596 conn->pending_sec_level == BT_SECURITY_FIPS)) { 4597 bt_dev_dbg(hdev, "ignoring key unauthenticated for high security"); 4598 goto not_found; 4599 } 4600 4601 conn_set_key(conn, key->type, key->pin_len); 4602 } 4603 4604 bacpy(&cp.bdaddr, &ev->bdaddr); 4605 memcpy(cp.link_key, key->val, HCI_LINK_KEY_SIZE); 4606 4607 hci_send_cmd(hdev, HCI_OP_LINK_KEY_REPLY, sizeof(cp), &cp); 4608 4609 hci_dev_unlock(hdev); 4610 4611 return; 4612 4613 not_found: 4614 hci_send_cmd(hdev, HCI_OP_LINK_KEY_NEG_REPLY, 6, &ev->bdaddr); 4615 hci_dev_unlock(hdev); 4616 } 4617 4618 static void hci_link_key_notify_evt(struct hci_dev *hdev, void *data, 4619 struct sk_buff *skb) 4620 { 4621 struct hci_ev_link_key_notify *ev = data; 4622 struct hci_conn *conn; 4623 struct link_key *key; 4624 bool persistent; 4625 u8 pin_len = 0; 4626 4627 bt_dev_dbg(hdev, ""); 4628 4629 hci_dev_lock(hdev); 4630 4631 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr); 4632 if (!conn) 4633 goto unlock; 4634 4635 /* Ignore NULL link key against CVE-2020-26555 */ 4636 if (!crypto_memneq(ev->link_key, ZERO_KEY, HCI_LINK_KEY_SIZE)) { 4637 bt_dev_dbg(hdev, "Ignore NULL link key (ZERO KEY) for %pMR", 4638 &ev->bdaddr); 4639 hci_disconnect(conn, HCI_ERROR_AUTH_FAILURE); 4640 hci_conn_drop(conn); 4641 goto unlock; 4642 } 4643 4644 hci_conn_hold(conn); 4645 conn->disc_timeout = HCI_DISCONN_TIMEOUT; 4646 hci_conn_drop(conn); 4647 4648 set_bit(HCI_CONN_NEW_LINK_KEY, &conn->flags); 4649 conn_set_key(conn, ev->key_type, conn->pin_length); 4650 4651 if (!hci_dev_test_flag(hdev, HCI_MGMT)) 4652 goto unlock; 4653 4654 key = hci_add_link_key(hdev, conn, &ev->bdaddr, ev->link_key, 4655 ev->key_type, pin_len, &persistent); 4656 if (!key) 4657 goto unlock; 4658 4659 /* Update connection information since adding the key will have 4660 * fixed up the type in the case of changed combination keys. 4661 */ 4662 if (ev->key_type == HCI_LK_CHANGED_COMBINATION) 4663 conn_set_key(conn, key->type, key->pin_len); 4664 4665 mgmt_new_link_key(hdev, key, persistent); 4666 4667 /* Keep debug keys around only if the HCI_KEEP_DEBUG_KEYS flag 4668 * is set. If it's not set simply remove the key from the kernel 4669 * list (we've still notified user space about it but with 4670 * store_hint being 0). 4671 */ 4672 if (key->type == HCI_LK_DEBUG_COMBINATION && 4673 !hci_dev_test_flag(hdev, HCI_KEEP_DEBUG_KEYS)) { 4674 list_del_rcu(&key->list); 4675 kfree_rcu(key, rcu); 4676 goto unlock; 4677 } 4678 4679 if (persistent) 4680 clear_bit(HCI_CONN_FLUSH_KEY, &conn->flags); 4681 else 4682 set_bit(HCI_CONN_FLUSH_KEY, &conn->flags); 4683 4684 unlock: 4685 hci_dev_unlock(hdev); 4686 } 4687 4688 static void hci_clock_offset_evt(struct hci_dev *hdev, void *data, 4689 struct sk_buff *skb) 4690 { 4691 struct hci_ev_clock_offset *ev = data; 4692 struct hci_conn *conn; 4693 4694 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 4695 4696 hci_dev_lock(hdev); 4697 4698 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle)); 4699 if (conn && !ev->status) { 4700 struct inquiry_entry *ie; 4701 4702 ie = hci_inquiry_cache_lookup(hdev, &conn->dst); 4703 if (ie) { 4704 ie->data.clock_offset = ev->clock_offset; 4705 ie->timestamp = jiffies; 4706 } 4707 } 4708 4709 hci_dev_unlock(hdev); 4710 } 4711 4712 static void hci_pkt_type_change_evt(struct hci_dev *hdev, void *data, 4713 struct sk_buff *skb) 4714 { 4715 struct hci_ev_pkt_type_change *ev = data; 4716 struct hci_conn *conn; 4717 4718 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 4719 4720 hci_dev_lock(hdev); 4721 4722 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle)); 4723 if (conn && !ev->status) 4724 conn->pkt_type = __le16_to_cpu(ev->pkt_type); 4725 4726 hci_dev_unlock(hdev); 4727 } 4728 4729 static void hci_pscan_rep_mode_evt(struct hci_dev *hdev, void *data, 4730 struct sk_buff *skb) 4731 { 4732 struct hci_ev_pscan_rep_mode *ev = data; 4733 struct inquiry_entry *ie; 4734 4735 bt_dev_dbg(hdev, ""); 4736 4737 hci_dev_lock(hdev); 4738 4739 ie = hci_inquiry_cache_lookup(hdev, &ev->bdaddr); 4740 if (ie) { 4741 ie->data.pscan_rep_mode = ev->pscan_rep_mode; 4742 ie->timestamp = jiffies; 4743 } 4744 4745 hci_dev_unlock(hdev); 4746 } 4747 4748 static void hci_inquiry_result_with_rssi_evt(struct hci_dev *hdev, void *edata, 4749 struct sk_buff *skb) 4750 { 4751 struct hci_ev_inquiry_result_rssi *ev = edata; 4752 struct inquiry_data data; 4753 int i; 4754 4755 bt_dev_dbg(hdev, "num_rsp %d", ev->num); 4756 4757 if (!ev->num) 4758 return; 4759 4760 if (hci_dev_test_flag(hdev, HCI_PERIODIC_INQ)) 4761 return; 4762 4763 hci_dev_lock(hdev); 4764 4765 if (skb->len == array_size(ev->num, 4766 sizeof(struct inquiry_info_rssi_pscan))) { 4767 struct inquiry_info_rssi_pscan *info; 4768 4769 for (i = 0; i < ev->num; i++) { 4770 u32 flags; 4771 4772 info = hci_ev_skb_pull(hdev, skb, 4773 HCI_EV_INQUIRY_RESULT_WITH_RSSI, 4774 sizeof(*info)); 4775 if (!info) { 4776 bt_dev_err(hdev, "Malformed HCI Event: 0x%2.2x", 4777 HCI_EV_INQUIRY_RESULT_WITH_RSSI); 4778 goto unlock; 4779 } 4780 4781 bacpy(&data.bdaddr, &info->bdaddr); 4782 data.pscan_rep_mode = info->pscan_rep_mode; 4783 data.pscan_period_mode = info->pscan_period_mode; 4784 data.pscan_mode = info->pscan_mode; 4785 memcpy(data.dev_class, info->dev_class, 3); 4786 data.clock_offset = info->clock_offset; 4787 data.rssi = info->rssi; 4788 data.ssp_mode = 0x00; 4789 4790 flags = hci_inquiry_cache_update(hdev, &data, false); 4791 4792 mgmt_device_found(hdev, &info->bdaddr, ACL_LINK, 0x00, 4793 info->dev_class, info->rssi, 4794 flags, NULL, 0, NULL, 0, 0); 4795 } 4796 } else if (skb->len == array_size(ev->num, 4797 sizeof(struct inquiry_info_rssi))) { 4798 struct inquiry_info_rssi *info; 4799 4800 for (i = 0; i < ev->num; i++) { 4801 u32 flags; 4802 4803 info = hci_ev_skb_pull(hdev, skb, 4804 HCI_EV_INQUIRY_RESULT_WITH_RSSI, 4805 sizeof(*info)); 4806 if (!info) { 4807 bt_dev_err(hdev, "Malformed HCI Event: 0x%2.2x", 4808 HCI_EV_INQUIRY_RESULT_WITH_RSSI); 4809 goto unlock; 4810 } 4811 4812 bacpy(&data.bdaddr, &info->bdaddr); 4813 data.pscan_rep_mode = info->pscan_rep_mode; 4814 data.pscan_period_mode = info->pscan_period_mode; 4815 data.pscan_mode = 0x00; 4816 memcpy(data.dev_class, info->dev_class, 3); 4817 data.clock_offset = info->clock_offset; 4818 data.rssi = info->rssi; 4819 data.ssp_mode = 0x00; 4820 4821 flags = hci_inquiry_cache_update(hdev, &data, false); 4822 4823 mgmt_device_found(hdev, &info->bdaddr, ACL_LINK, 0x00, 4824 info->dev_class, info->rssi, 4825 flags, NULL, 0, NULL, 0, 0); 4826 } 4827 } else { 4828 bt_dev_err(hdev, "Malformed HCI Event: 0x%2.2x", 4829 HCI_EV_INQUIRY_RESULT_WITH_RSSI); 4830 } 4831 unlock: 4832 hci_dev_unlock(hdev); 4833 } 4834 4835 static void hci_remote_ext_features_evt(struct hci_dev *hdev, void *data, 4836 struct sk_buff *skb) 4837 { 4838 struct hci_ev_remote_ext_features *ev = data; 4839 struct hci_conn *conn; 4840 4841 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 4842 4843 hci_dev_lock(hdev); 4844 4845 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle)); 4846 if (!conn) 4847 goto unlock; 4848 4849 if (ev->page < HCI_MAX_PAGES) 4850 memcpy(conn->features[ev->page], ev->features, 8); 4851 4852 if (!ev->status && ev->page == 0x01) { 4853 struct inquiry_entry *ie; 4854 4855 ie = hci_inquiry_cache_lookup(hdev, &conn->dst); 4856 if (ie) 4857 ie->data.ssp_mode = (ev->features[0] & LMP_HOST_SSP); 4858 4859 if (ev->features[0] & LMP_HOST_SSP) { 4860 set_bit(HCI_CONN_SSP_ENABLED, &conn->flags); 4861 } else { 4862 /* It is mandatory by the Bluetooth specification that 4863 * Extended Inquiry Results are only used when Secure 4864 * Simple Pairing is enabled, but some devices violate 4865 * this. 4866 * 4867 * To make these devices work, the internal SSP 4868 * enabled flag needs to be cleared if the remote host 4869 * features do not indicate SSP support */ 4870 clear_bit(HCI_CONN_SSP_ENABLED, &conn->flags); 4871 } 4872 4873 if (ev->features[0] & LMP_HOST_SC) 4874 set_bit(HCI_CONN_SC_ENABLED, &conn->flags); 4875 } 4876 4877 if (conn->state != BT_CONFIG) 4878 goto unlock; 4879 4880 if (!ev->status && !test_bit(HCI_CONN_MGMT_CONNECTED, &conn->flags)) { 4881 struct hci_cp_remote_name_req cp; 4882 memset(&cp, 0, sizeof(cp)); 4883 bacpy(&cp.bdaddr, &conn->dst); 4884 cp.pscan_rep_mode = 0x02; 4885 hci_send_cmd(hdev, HCI_OP_REMOTE_NAME_REQ, sizeof(cp), &cp); 4886 } else { 4887 mgmt_device_connected(hdev, conn, NULL, 0); 4888 } 4889 4890 if (!hci_outgoing_auth_needed(hdev, conn)) { 4891 conn->state = BT_CONNECTED; 4892 hci_connect_cfm(conn, ev->status); 4893 hci_conn_drop(conn); 4894 } 4895 4896 unlock: 4897 hci_dev_unlock(hdev); 4898 } 4899 4900 static void hci_sync_conn_complete_evt(struct hci_dev *hdev, void *data, 4901 struct sk_buff *skb) 4902 { 4903 struct hci_ev_sync_conn_complete *ev = data; 4904 struct hci_conn *conn; 4905 u8 status = ev->status; 4906 4907 switch (ev->link_type) { 4908 case SCO_LINK: 4909 case ESCO_LINK: 4910 break; 4911 default: 4912 /* As per Core 5.3 Vol 4 Part E 7.7.35 (p.2219), Link_Type 4913 * for HCI_Synchronous_Connection_Complete is limited to 4914 * either SCO or eSCO 4915 */ 4916 bt_dev_err(hdev, "Ignoring connect complete event for invalid link type"); 4917 return; 4918 } 4919 4920 bt_dev_dbg(hdev, "status 0x%2.2x", status); 4921 4922 hci_dev_lock(hdev); 4923 4924 conn = hci_conn_hash_lookup_ba(hdev, ev->link_type, &ev->bdaddr); 4925 if (!conn) { 4926 if (ev->link_type == ESCO_LINK) 4927 goto unlock; 4928 4929 /* When the link type in the event indicates SCO connection 4930 * and lookup of the connection object fails, then check 4931 * if an eSCO connection object exists. 4932 * 4933 * The core limits the synchronous connections to either 4934 * SCO or eSCO. The eSCO connection is preferred and tried 4935 * to be setup first and until successfully established, 4936 * the link type will be hinted as eSCO. 4937 */ 4938 conn = hci_conn_hash_lookup_ba(hdev, ESCO_LINK, &ev->bdaddr); 4939 if (!conn) 4940 goto unlock; 4941 } 4942 4943 /* The HCI_Synchronous_Connection_Complete event is only sent once per connection. 4944 * Processing it more than once per connection can corrupt kernel memory. 4945 * 4946 * As the connection handle is set here for the first time, it indicates 4947 * whether the connection is already set up. 4948 */ 4949 if (!HCI_CONN_HANDLE_UNSET(conn->handle)) { 4950 bt_dev_err(hdev, "Ignoring HCI_Sync_Conn_Complete event for existing connection"); 4951 goto unlock; 4952 } 4953 4954 switch (status) { 4955 case 0x00: 4956 status = hci_conn_set_handle(conn, __le16_to_cpu(ev->handle)); 4957 if (status) { 4958 conn->state = BT_CLOSED; 4959 break; 4960 } 4961 4962 conn->state = BT_CONNECTED; 4963 conn->type = ev->link_type; 4964 4965 hci_debugfs_create_conn(conn); 4966 hci_conn_add_sysfs(conn); 4967 break; 4968 4969 case 0x10: /* Connection Accept Timeout */ 4970 case 0x0d: /* Connection Rejected due to Limited Resources */ 4971 case 0x11: /* Unsupported Feature or Parameter Value */ 4972 case 0x1c: /* SCO interval rejected */ 4973 case 0x1a: /* Unsupported Remote Feature */ 4974 case 0x1e: /* Invalid LMP Parameters */ 4975 case 0x1f: /* Unspecified error */ 4976 case 0x20: /* Unsupported LMP Parameter value */ 4977 if (conn->out) { 4978 conn->pkt_type = (hdev->esco_type & SCO_ESCO_MASK) | 4979 (hdev->esco_type & EDR_ESCO_MASK); 4980 if (hci_setup_sync(conn, conn->parent->handle)) 4981 goto unlock; 4982 } 4983 fallthrough; 4984 4985 default: 4986 conn->state = BT_CLOSED; 4987 break; 4988 } 4989 4990 bt_dev_dbg(hdev, "SCO connected with air mode: %02x", ev->air_mode); 4991 /* Notify only in case of SCO over HCI transport data path which 4992 * is zero and non-zero value shall be non-HCI transport data path 4993 */ 4994 if (conn->codec.data_path == 0 && hdev->notify) { 4995 switch (ev->air_mode) { 4996 case 0x02: 4997 hdev->notify(hdev, HCI_NOTIFY_ENABLE_SCO_CVSD); 4998 break; 4999 case 0x03: 5000 hdev->notify(hdev, HCI_NOTIFY_ENABLE_SCO_TRANSP); 5001 break; 5002 } 5003 } 5004 5005 hci_connect_cfm(conn, status); 5006 if (status) 5007 hci_conn_del(conn); 5008 5009 unlock: 5010 hci_dev_unlock(hdev); 5011 } 5012 5013 static inline size_t eir_get_length(u8 *eir, size_t eir_len) 5014 { 5015 size_t parsed = 0; 5016 5017 while (parsed < eir_len) { 5018 u8 field_len = eir[0]; 5019 5020 if (field_len == 0) 5021 return parsed; 5022 5023 parsed += field_len + 1; 5024 eir += field_len + 1; 5025 } 5026 5027 return eir_len; 5028 } 5029 5030 static void hci_extended_inquiry_result_evt(struct hci_dev *hdev, void *edata, 5031 struct sk_buff *skb) 5032 { 5033 struct hci_ev_ext_inquiry_result *ev = edata; 5034 struct inquiry_data data; 5035 size_t eir_len; 5036 int i; 5037 5038 if (!hci_ev_skb_pull(hdev, skb, HCI_EV_EXTENDED_INQUIRY_RESULT, 5039 flex_array_size(ev, info, ev->num))) 5040 return; 5041 5042 bt_dev_dbg(hdev, "num %d", ev->num); 5043 5044 if (!ev->num) 5045 return; 5046 5047 if (hci_dev_test_flag(hdev, HCI_PERIODIC_INQ)) 5048 return; 5049 5050 hci_dev_lock(hdev); 5051 5052 for (i = 0; i < ev->num; i++) { 5053 struct extended_inquiry_info *info = &ev->info[i]; 5054 u32 flags; 5055 bool name_known; 5056 5057 bacpy(&data.bdaddr, &info->bdaddr); 5058 data.pscan_rep_mode = info->pscan_rep_mode; 5059 data.pscan_period_mode = info->pscan_period_mode; 5060 data.pscan_mode = 0x00; 5061 memcpy(data.dev_class, info->dev_class, 3); 5062 data.clock_offset = info->clock_offset; 5063 data.rssi = info->rssi; 5064 data.ssp_mode = 0x01; 5065 5066 if (hci_dev_test_flag(hdev, HCI_MGMT)) 5067 name_known = eir_get_data(info->data, 5068 sizeof(info->data), 5069 EIR_NAME_COMPLETE, NULL); 5070 else 5071 name_known = true; 5072 5073 flags = hci_inquiry_cache_update(hdev, &data, name_known); 5074 5075 eir_len = eir_get_length(info->data, sizeof(info->data)); 5076 5077 mgmt_device_found(hdev, &info->bdaddr, ACL_LINK, 0x00, 5078 info->dev_class, info->rssi, 5079 flags, info->data, eir_len, NULL, 0, 0); 5080 } 5081 5082 hci_dev_unlock(hdev); 5083 } 5084 5085 static void hci_key_refresh_complete_evt(struct hci_dev *hdev, void *data, 5086 struct sk_buff *skb) 5087 { 5088 struct hci_ev_key_refresh_complete *ev = data; 5089 struct hci_conn *conn; 5090 5091 bt_dev_dbg(hdev, "status 0x%2.2x handle 0x%4.4x", ev->status, 5092 __le16_to_cpu(ev->handle)); 5093 5094 hci_dev_lock(hdev); 5095 5096 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle)); 5097 if (!conn) 5098 goto unlock; 5099 5100 /* For BR/EDR the necessary steps are taken through the 5101 * auth_complete event. 5102 */ 5103 if (conn->type != LE_LINK) 5104 goto unlock; 5105 5106 if (!ev->status) 5107 conn->sec_level = conn->pending_sec_level; 5108 5109 clear_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags); 5110 5111 if (ev->status && conn->state == BT_CONNECTED) { 5112 hci_disconnect(conn, HCI_ERROR_AUTH_FAILURE); 5113 hci_conn_drop(conn); 5114 goto unlock; 5115 } 5116 5117 if (conn->state == BT_CONFIG) { 5118 if (!ev->status) 5119 conn->state = BT_CONNECTED; 5120 5121 hci_connect_cfm(conn, ev->status); 5122 hci_conn_drop(conn); 5123 } else { 5124 hci_auth_cfm(conn, ev->status); 5125 5126 hci_conn_hold(conn); 5127 conn->disc_timeout = HCI_DISCONN_TIMEOUT; 5128 hci_conn_drop(conn); 5129 } 5130 5131 unlock: 5132 hci_dev_unlock(hdev); 5133 } 5134 5135 static u8 hci_get_auth_req(struct hci_conn *conn) 5136 { 5137 /* If remote requests no-bonding follow that lead */ 5138 if (conn->remote_auth == HCI_AT_NO_BONDING || 5139 conn->remote_auth == HCI_AT_NO_BONDING_MITM) 5140 return conn->remote_auth | (conn->auth_type & 0x01); 5141 5142 /* If both remote and local have enough IO capabilities, require 5143 * MITM protection 5144 */ 5145 if (conn->remote_cap != HCI_IO_NO_INPUT_OUTPUT && 5146 conn->io_capability != HCI_IO_NO_INPUT_OUTPUT) 5147 return conn->remote_auth | 0x01; 5148 5149 /* No MITM protection possible so ignore remote requirement */ 5150 return (conn->remote_auth & ~0x01) | (conn->auth_type & 0x01); 5151 } 5152 5153 static u8 bredr_oob_data_present(struct hci_conn *conn) 5154 { 5155 struct hci_dev *hdev = conn->hdev; 5156 struct oob_data *data; 5157 5158 data = hci_find_remote_oob_data(hdev, &conn->dst, BDADDR_BREDR); 5159 if (!data) 5160 return 0x00; 5161 5162 if (bredr_sc_enabled(hdev)) { 5163 /* When Secure Connections is enabled, then just 5164 * return the present value stored with the OOB 5165 * data. The stored value contains the right present 5166 * information. However it can only be trusted when 5167 * not in Secure Connection Only mode. 5168 */ 5169 if (!hci_dev_test_flag(hdev, HCI_SC_ONLY)) 5170 return data->present; 5171 5172 /* When Secure Connections Only mode is enabled, then 5173 * the P-256 values are required. If they are not 5174 * available, then do not declare that OOB data is 5175 * present. 5176 */ 5177 if (!crypto_memneq(data->rand256, ZERO_KEY, 16) || 5178 !crypto_memneq(data->hash256, ZERO_KEY, 16)) 5179 return 0x00; 5180 5181 return 0x02; 5182 } 5183 5184 /* When Secure Connections is not enabled or actually 5185 * not supported by the hardware, then check that if 5186 * P-192 data values are present. 5187 */ 5188 if (!crypto_memneq(data->rand192, ZERO_KEY, 16) || 5189 !crypto_memneq(data->hash192, ZERO_KEY, 16)) 5190 return 0x00; 5191 5192 return 0x01; 5193 } 5194 5195 static void hci_io_capa_request_evt(struct hci_dev *hdev, void *data, 5196 struct sk_buff *skb) 5197 { 5198 struct hci_ev_io_capa_request *ev = data; 5199 struct hci_conn *conn; 5200 5201 bt_dev_dbg(hdev, ""); 5202 5203 hci_dev_lock(hdev); 5204 5205 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr); 5206 if (!conn || !hci_dev_test_flag(hdev, HCI_SSP_ENABLED)) 5207 goto unlock; 5208 5209 /* Assume remote supports SSP since it has triggered this event */ 5210 set_bit(HCI_CONN_SSP_ENABLED, &conn->flags); 5211 5212 hci_conn_hold(conn); 5213 5214 if (!hci_dev_test_flag(hdev, HCI_MGMT)) 5215 goto unlock; 5216 5217 /* Allow pairing if we're pairable, the initiators of the 5218 * pairing or if the remote is not requesting bonding. 5219 */ 5220 if (hci_dev_test_flag(hdev, HCI_BONDABLE) || 5221 test_bit(HCI_CONN_AUTH_INITIATOR, &conn->flags) || 5222 (conn->remote_auth & ~0x01) == HCI_AT_NO_BONDING) { 5223 struct hci_cp_io_capability_reply cp; 5224 5225 bacpy(&cp.bdaddr, &ev->bdaddr); 5226 /* Change the IO capability from KeyboardDisplay 5227 * to DisplayYesNo as it is not supported by BT spec. */ 5228 cp.capability = (conn->io_capability == 0x04) ? 5229 HCI_IO_DISPLAY_YESNO : conn->io_capability; 5230 5231 /* If we are initiators, there is no remote information yet */ 5232 if (conn->remote_auth == 0xff) { 5233 /* Request MITM protection if our IO caps allow it 5234 * except for the no-bonding case. 5235 */ 5236 if (conn->io_capability != HCI_IO_NO_INPUT_OUTPUT && 5237 conn->auth_type != HCI_AT_NO_BONDING) 5238 conn->auth_type |= 0x01; 5239 } else { 5240 conn->auth_type = hci_get_auth_req(conn); 5241 } 5242 5243 /* If we're not bondable, force one of the non-bondable 5244 * authentication requirement values. 5245 */ 5246 if (!hci_dev_test_flag(hdev, HCI_BONDABLE)) 5247 conn->auth_type &= HCI_AT_NO_BONDING_MITM; 5248 5249 cp.authentication = conn->auth_type; 5250 cp.oob_data = bredr_oob_data_present(conn); 5251 5252 hci_send_cmd(hdev, HCI_OP_IO_CAPABILITY_REPLY, 5253 sizeof(cp), &cp); 5254 } else { 5255 struct hci_cp_io_capability_neg_reply cp; 5256 5257 bacpy(&cp.bdaddr, &ev->bdaddr); 5258 cp.reason = HCI_ERROR_PAIRING_NOT_ALLOWED; 5259 5260 hci_send_cmd(hdev, HCI_OP_IO_CAPABILITY_NEG_REPLY, 5261 sizeof(cp), &cp); 5262 } 5263 5264 unlock: 5265 hci_dev_unlock(hdev); 5266 } 5267 5268 static void hci_io_capa_reply_evt(struct hci_dev *hdev, void *data, 5269 struct sk_buff *skb) 5270 { 5271 struct hci_ev_io_capa_reply *ev = data; 5272 struct hci_conn *conn; 5273 5274 bt_dev_dbg(hdev, ""); 5275 5276 hci_dev_lock(hdev); 5277 5278 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr); 5279 if (!conn) 5280 goto unlock; 5281 5282 conn->remote_cap = ev->capability; 5283 conn->remote_auth = ev->authentication; 5284 5285 unlock: 5286 hci_dev_unlock(hdev); 5287 } 5288 5289 static void hci_user_confirm_request_evt(struct hci_dev *hdev, void *data, 5290 struct sk_buff *skb) 5291 { 5292 struct hci_ev_user_confirm_req *ev = data; 5293 int loc_mitm, rem_mitm, confirm_hint = 0; 5294 struct hci_conn *conn; 5295 5296 bt_dev_dbg(hdev, ""); 5297 5298 hci_dev_lock(hdev); 5299 5300 if (!hci_dev_test_flag(hdev, HCI_MGMT)) 5301 goto unlock; 5302 5303 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr); 5304 if (!conn) 5305 goto unlock; 5306 5307 loc_mitm = (conn->auth_type & 0x01); 5308 rem_mitm = (conn->remote_auth & 0x01); 5309 5310 /* If we require MITM but the remote device can't provide that 5311 * (it has NoInputNoOutput) then reject the confirmation 5312 * request. We check the security level here since it doesn't 5313 * necessarily match conn->auth_type. 5314 */ 5315 if (conn->pending_sec_level > BT_SECURITY_MEDIUM && 5316 conn->remote_cap == HCI_IO_NO_INPUT_OUTPUT) { 5317 bt_dev_dbg(hdev, "Rejecting request: remote device can't provide MITM"); 5318 hci_send_cmd(hdev, HCI_OP_USER_CONFIRM_NEG_REPLY, 5319 sizeof(ev->bdaddr), &ev->bdaddr); 5320 goto unlock; 5321 } 5322 5323 /* If no side requires MITM protection; use JUST_CFM method */ 5324 if ((!loc_mitm || conn->remote_cap == HCI_IO_NO_INPUT_OUTPUT) && 5325 (!rem_mitm || conn->io_capability == HCI_IO_NO_INPUT_OUTPUT)) { 5326 5327 /* If we're not the initiator of request authorization and the 5328 * local IO capability is not NoInputNoOutput, use JUST_WORKS 5329 * method (mgmt_user_confirm with confirm_hint set to 1). 5330 */ 5331 if (!test_bit(HCI_CONN_AUTH_PEND, &conn->flags) && 5332 conn->io_capability != HCI_IO_NO_INPUT_OUTPUT) { 5333 bt_dev_dbg(hdev, "Confirming auto-accept as acceptor"); 5334 confirm_hint = 1; 5335 goto confirm; 5336 } 5337 5338 /* If there already exists link key in local host, leave the 5339 * decision to user space since the remote device could be 5340 * legitimate or malicious. 5341 */ 5342 if (hci_find_link_key(hdev, &ev->bdaddr)) { 5343 bt_dev_dbg(hdev, "Local host already has link key"); 5344 confirm_hint = 1; 5345 goto confirm; 5346 } 5347 5348 BT_DBG("Auto-accept of user confirmation with %ums delay", 5349 hdev->auto_accept_delay); 5350 5351 if (hdev->auto_accept_delay > 0) { 5352 int delay = msecs_to_jiffies(hdev->auto_accept_delay); 5353 queue_delayed_work(conn->hdev->workqueue, 5354 &conn->auto_accept_work, delay); 5355 goto unlock; 5356 } 5357 5358 hci_send_cmd(hdev, HCI_OP_USER_CONFIRM_REPLY, 5359 sizeof(ev->bdaddr), &ev->bdaddr); 5360 goto unlock; 5361 } 5362 5363 confirm: 5364 mgmt_user_confirm_request(hdev, &ev->bdaddr, ACL_LINK, 0, 5365 le32_to_cpu(ev->passkey), confirm_hint); 5366 5367 unlock: 5368 hci_dev_unlock(hdev); 5369 } 5370 5371 static void hci_user_passkey_request_evt(struct hci_dev *hdev, void *data, 5372 struct sk_buff *skb) 5373 { 5374 struct hci_ev_user_passkey_req *ev = data; 5375 5376 bt_dev_dbg(hdev, ""); 5377 5378 if (hci_dev_test_flag(hdev, HCI_MGMT)) 5379 mgmt_user_passkey_request(hdev, &ev->bdaddr, ACL_LINK, 0); 5380 } 5381 5382 static void hci_user_passkey_notify_evt(struct hci_dev *hdev, void *data, 5383 struct sk_buff *skb) 5384 { 5385 struct hci_ev_user_passkey_notify *ev = data; 5386 struct hci_conn *conn; 5387 5388 bt_dev_dbg(hdev, ""); 5389 5390 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr); 5391 if (!conn) 5392 return; 5393 5394 conn->passkey_notify = __le32_to_cpu(ev->passkey); 5395 conn->passkey_entered = 0; 5396 5397 if (hci_dev_test_flag(hdev, HCI_MGMT)) 5398 mgmt_user_passkey_notify(hdev, &conn->dst, conn->type, 5399 conn->dst_type, conn->passkey_notify, 5400 conn->passkey_entered); 5401 } 5402 5403 static void hci_keypress_notify_evt(struct hci_dev *hdev, void *data, 5404 struct sk_buff *skb) 5405 { 5406 struct hci_ev_keypress_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 switch (ev->type) { 5416 case HCI_KEYPRESS_STARTED: 5417 conn->passkey_entered = 0; 5418 return; 5419 5420 case HCI_KEYPRESS_ENTERED: 5421 conn->passkey_entered++; 5422 break; 5423 5424 case HCI_KEYPRESS_ERASED: 5425 conn->passkey_entered--; 5426 break; 5427 5428 case HCI_KEYPRESS_CLEARED: 5429 conn->passkey_entered = 0; 5430 break; 5431 5432 case HCI_KEYPRESS_COMPLETED: 5433 return; 5434 } 5435 5436 if (hci_dev_test_flag(hdev, HCI_MGMT)) 5437 mgmt_user_passkey_notify(hdev, &conn->dst, conn->type, 5438 conn->dst_type, conn->passkey_notify, 5439 conn->passkey_entered); 5440 } 5441 5442 static void hci_simple_pair_complete_evt(struct hci_dev *hdev, void *data, 5443 struct sk_buff *skb) 5444 { 5445 struct hci_ev_simple_pair_complete *ev = data; 5446 struct hci_conn *conn; 5447 5448 bt_dev_dbg(hdev, ""); 5449 5450 hci_dev_lock(hdev); 5451 5452 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr); 5453 if (!conn || !hci_conn_ssp_enabled(conn)) 5454 goto unlock; 5455 5456 /* Reset the authentication requirement to unknown */ 5457 conn->remote_auth = 0xff; 5458 5459 /* To avoid duplicate auth_failed events to user space we check 5460 * the HCI_CONN_AUTH_PEND flag which will be set if we 5461 * initiated the authentication. A traditional auth_complete 5462 * event gets always produced as initiator and is also mapped to 5463 * the mgmt_auth_failed event */ 5464 if (!test_bit(HCI_CONN_AUTH_PEND, &conn->flags) && ev->status) 5465 mgmt_auth_failed(conn, ev->status); 5466 5467 hci_conn_drop(conn); 5468 5469 unlock: 5470 hci_dev_unlock(hdev); 5471 } 5472 5473 static void hci_remote_host_features_evt(struct hci_dev *hdev, void *data, 5474 struct sk_buff *skb) 5475 { 5476 struct hci_ev_remote_host_features *ev = data; 5477 struct inquiry_entry *ie; 5478 struct hci_conn *conn; 5479 5480 bt_dev_dbg(hdev, ""); 5481 5482 hci_dev_lock(hdev); 5483 5484 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr); 5485 if (conn) 5486 memcpy(conn->features[1], ev->features, 8); 5487 5488 ie = hci_inquiry_cache_lookup(hdev, &ev->bdaddr); 5489 if (ie) 5490 ie->data.ssp_mode = (ev->features[0] & LMP_HOST_SSP); 5491 5492 hci_dev_unlock(hdev); 5493 } 5494 5495 static void hci_remote_oob_data_request_evt(struct hci_dev *hdev, void *edata, 5496 struct sk_buff *skb) 5497 { 5498 struct hci_ev_remote_oob_data_request *ev = edata; 5499 struct oob_data *data; 5500 5501 bt_dev_dbg(hdev, ""); 5502 5503 hci_dev_lock(hdev); 5504 5505 if (!hci_dev_test_flag(hdev, HCI_MGMT)) 5506 goto unlock; 5507 5508 data = hci_find_remote_oob_data(hdev, &ev->bdaddr, BDADDR_BREDR); 5509 if (!data) { 5510 struct hci_cp_remote_oob_data_neg_reply cp; 5511 5512 bacpy(&cp.bdaddr, &ev->bdaddr); 5513 hci_send_cmd(hdev, HCI_OP_REMOTE_OOB_DATA_NEG_REPLY, 5514 sizeof(cp), &cp); 5515 goto unlock; 5516 } 5517 5518 if (bredr_sc_enabled(hdev)) { 5519 struct hci_cp_remote_oob_ext_data_reply cp; 5520 5521 bacpy(&cp.bdaddr, &ev->bdaddr); 5522 if (hci_dev_test_flag(hdev, HCI_SC_ONLY)) { 5523 memset(cp.hash192, 0, sizeof(cp.hash192)); 5524 memset(cp.rand192, 0, sizeof(cp.rand192)); 5525 } else { 5526 memcpy(cp.hash192, data->hash192, sizeof(cp.hash192)); 5527 memcpy(cp.rand192, data->rand192, sizeof(cp.rand192)); 5528 } 5529 memcpy(cp.hash256, data->hash256, sizeof(cp.hash256)); 5530 memcpy(cp.rand256, data->rand256, sizeof(cp.rand256)); 5531 5532 hci_send_cmd(hdev, HCI_OP_REMOTE_OOB_EXT_DATA_REPLY, 5533 sizeof(cp), &cp); 5534 } else { 5535 struct hci_cp_remote_oob_data_reply cp; 5536 5537 bacpy(&cp.bdaddr, &ev->bdaddr); 5538 memcpy(cp.hash, data->hash192, sizeof(cp.hash)); 5539 memcpy(cp.rand, data->rand192, sizeof(cp.rand)); 5540 5541 hci_send_cmd(hdev, HCI_OP_REMOTE_OOB_DATA_REPLY, 5542 sizeof(cp), &cp); 5543 } 5544 5545 unlock: 5546 hci_dev_unlock(hdev); 5547 } 5548 5549 static void le_conn_update_addr(struct hci_conn *conn, bdaddr_t *bdaddr, 5550 u8 bdaddr_type, bdaddr_t *local_rpa) 5551 { 5552 if (conn->out) { 5553 conn->dst_type = bdaddr_type; 5554 conn->resp_addr_type = bdaddr_type; 5555 bacpy(&conn->resp_addr, bdaddr); 5556 5557 /* Check if the controller has set a Local RPA then it must be 5558 * used instead or hdev->rpa. 5559 */ 5560 if (local_rpa && bacmp(local_rpa, BDADDR_ANY)) { 5561 conn->init_addr_type = ADDR_LE_DEV_RANDOM; 5562 bacpy(&conn->init_addr, local_rpa); 5563 } else if (hci_dev_test_flag(conn->hdev, HCI_PRIVACY)) { 5564 conn->init_addr_type = ADDR_LE_DEV_RANDOM; 5565 bacpy(&conn->init_addr, &conn->hdev->rpa); 5566 } else { 5567 hci_copy_identity_address(conn->hdev, &conn->init_addr, 5568 &conn->init_addr_type); 5569 } 5570 } else { 5571 conn->resp_addr_type = conn->hdev->adv_addr_type; 5572 /* Check if the controller has set a Local RPA then it must be 5573 * used instead or hdev->rpa. 5574 */ 5575 if (local_rpa && bacmp(local_rpa, BDADDR_ANY)) { 5576 conn->resp_addr_type = ADDR_LE_DEV_RANDOM; 5577 bacpy(&conn->resp_addr, local_rpa); 5578 } else if (conn->hdev->adv_addr_type == ADDR_LE_DEV_RANDOM) { 5579 /* In case of ext adv, resp_addr will be updated in 5580 * Adv Terminated event. 5581 */ 5582 if (!ext_adv_capable(conn->hdev)) 5583 bacpy(&conn->resp_addr, 5584 &conn->hdev->random_addr); 5585 } else { 5586 bacpy(&conn->resp_addr, &conn->hdev->bdaddr); 5587 } 5588 5589 conn->init_addr_type = bdaddr_type; 5590 bacpy(&conn->init_addr, bdaddr); 5591 5592 /* For incoming connections, set the default minimum 5593 * and maximum connection interval. They will be used 5594 * to check if the parameters are in range and if not 5595 * trigger the connection update procedure. 5596 */ 5597 conn->le_conn_min_interval = conn->hdev->le_conn_min_interval; 5598 conn->le_conn_max_interval = conn->hdev->le_conn_max_interval; 5599 } 5600 } 5601 5602 static void le_conn_complete_evt(struct hci_dev *hdev, u8 status, 5603 bdaddr_t *bdaddr, u8 bdaddr_type, 5604 bdaddr_t *local_rpa, u8 role, u16 handle, 5605 u16 interval, u16 latency, 5606 u16 supervision_timeout) 5607 { 5608 struct hci_conn_params *params; 5609 struct hci_conn *conn; 5610 struct smp_irk *irk; 5611 u8 addr_type; 5612 5613 hci_dev_lock(hdev); 5614 5615 /* All controllers implicitly stop advertising in the event of a 5616 * connection, so ensure that the state bit is cleared. 5617 */ 5618 hci_dev_clear_flag(hdev, HCI_LE_ADV); 5619 5620 conn = hci_conn_hash_lookup_ba(hdev, LE_LINK, bdaddr); 5621 if (!conn) { 5622 /* In case of error status and there is no connection pending 5623 * just unlock as there is nothing to cleanup. 5624 */ 5625 if (status) 5626 goto unlock; 5627 5628 conn = hci_conn_add_unset(hdev, LE_LINK, bdaddr, role); 5629 if (IS_ERR(conn)) { 5630 bt_dev_err(hdev, "connection err: %ld", PTR_ERR(conn)); 5631 goto unlock; 5632 } 5633 5634 conn->dst_type = bdaddr_type; 5635 5636 /* If we didn't have a hci_conn object previously 5637 * but we're in central role this must be something 5638 * initiated using an accept list. Since accept list based 5639 * connections are not "first class citizens" we don't 5640 * have full tracking of them. Therefore, we go ahead 5641 * with a "best effort" approach of determining the 5642 * initiator address based on the HCI_PRIVACY flag. 5643 */ 5644 if (conn->out) { 5645 conn->resp_addr_type = bdaddr_type; 5646 bacpy(&conn->resp_addr, bdaddr); 5647 if (hci_dev_test_flag(hdev, HCI_PRIVACY)) { 5648 conn->init_addr_type = ADDR_LE_DEV_RANDOM; 5649 bacpy(&conn->init_addr, &hdev->rpa); 5650 } else { 5651 hci_copy_identity_address(hdev, 5652 &conn->init_addr, 5653 &conn->init_addr_type); 5654 } 5655 } 5656 } else { 5657 cancel_delayed_work(&conn->le_conn_timeout); 5658 } 5659 5660 /* The HCI_LE_Connection_Complete event is only sent once per connection. 5661 * Processing it more than once per connection can corrupt kernel memory. 5662 * 5663 * As the connection handle is set here for the first time, it indicates 5664 * whether the connection is already set up. 5665 */ 5666 if (!HCI_CONN_HANDLE_UNSET(conn->handle)) { 5667 bt_dev_err(hdev, "Ignoring HCI_Connection_Complete for existing connection"); 5668 goto unlock; 5669 } 5670 5671 le_conn_update_addr(conn, bdaddr, bdaddr_type, local_rpa); 5672 5673 /* Lookup the identity address from the stored connection 5674 * address and address type. 5675 * 5676 * When establishing connections to an identity address, the 5677 * connection procedure will store the resolvable random 5678 * address first. Now if it can be converted back into the 5679 * identity address, start using the identity address from 5680 * now on. 5681 */ 5682 irk = hci_get_irk(hdev, &conn->dst, conn->dst_type); 5683 if (irk) { 5684 bacpy(&conn->dst, &irk->bdaddr); 5685 conn->dst_type = irk->addr_type; 5686 } 5687 5688 conn->dst_type = ev_bdaddr_type(hdev, conn->dst_type, NULL); 5689 5690 /* All connection failure handling is taken care of by the 5691 * hci_conn_failed function which is triggered by the HCI 5692 * request completion callbacks used for connecting. 5693 */ 5694 if (status || hci_conn_set_handle(conn, handle)) 5695 goto unlock; 5696 5697 /* Drop the connection if it has been aborted */ 5698 if (test_bit(HCI_CONN_CANCEL, &conn->flags)) { 5699 hci_conn_drop(conn); 5700 goto unlock; 5701 } 5702 5703 if (conn->dst_type == ADDR_LE_DEV_PUBLIC) 5704 addr_type = BDADDR_LE_PUBLIC; 5705 else 5706 addr_type = BDADDR_LE_RANDOM; 5707 5708 /* Drop the connection if the device is blocked */ 5709 if (hci_bdaddr_list_lookup(&hdev->reject_list, &conn->dst, addr_type)) { 5710 hci_conn_drop(conn); 5711 goto unlock; 5712 } 5713 5714 mgmt_device_connected(hdev, conn, NULL, 0); 5715 5716 conn->sec_level = BT_SECURITY_LOW; 5717 conn->state = BT_CONFIG; 5718 5719 /* Store current advertising instance as connection advertising instance 5720 * when sotfware rotation is in use so it can be re-enabled when 5721 * disconnected. 5722 */ 5723 if (!ext_adv_capable(hdev)) 5724 conn->adv_instance = hdev->cur_adv_instance; 5725 5726 conn->le_conn_interval = interval; 5727 conn->le_conn_latency = latency; 5728 conn->le_supv_timeout = supervision_timeout; 5729 5730 hci_debugfs_create_conn(conn); 5731 hci_conn_add_sysfs(conn); 5732 5733 /* The remote features procedure is defined for central 5734 * role only. So only in case of an initiated connection 5735 * request the remote features. 5736 * 5737 * If the local controller supports peripheral-initiated features 5738 * exchange, then requesting the remote features in peripheral 5739 * role is possible. Otherwise just transition into the 5740 * connected state without requesting the remote features. 5741 */ 5742 if (conn->out || 5743 (hdev->le_features[0] & HCI_LE_PERIPHERAL_FEATURES)) { 5744 struct hci_cp_le_read_remote_features cp; 5745 5746 cp.handle = __cpu_to_le16(conn->handle); 5747 5748 hci_send_cmd(hdev, HCI_OP_LE_READ_REMOTE_FEATURES, 5749 sizeof(cp), &cp); 5750 5751 hci_conn_hold(conn); 5752 } else { 5753 conn->state = BT_CONNECTED; 5754 hci_connect_cfm(conn, status); 5755 } 5756 5757 params = hci_pend_le_action_lookup(&hdev->pend_le_conns, &conn->dst, 5758 conn->dst_type); 5759 if (params) { 5760 hci_pend_le_list_del_init(params); 5761 if (params->conn) { 5762 hci_conn_drop(params->conn); 5763 hci_conn_put(params->conn); 5764 params->conn = NULL; 5765 } 5766 } 5767 5768 unlock: 5769 hci_update_passive_scan(hdev); 5770 hci_dev_unlock(hdev); 5771 } 5772 5773 static void hci_le_conn_complete_evt(struct hci_dev *hdev, void *data, 5774 struct sk_buff *skb) 5775 { 5776 struct hci_ev_le_conn_complete *ev = data; 5777 5778 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 5779 5780 le_conn_complete_evt(hdev, ev->status, &ev->bdaddr, ev->bdaddr_type, 5781 NULL, ev->role, le16_to_cpu(ev->handle), 5782 le16_to_cpu(ev->interval), 5783 le16_to_cpu(ev->latency), 5784 le16_to_cpu(ev->supervision_timeout)); 5785 } 5786 5787 static void hci_le_enh_conn_complete_evt(struct hci_dev *hdev, void *data, 5788 struct sk_buff *skb) 5789 { 5790 struct hci_ev_le_enh_conn_complete *ev = data; 5791 5792 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 5793 5794 le_conn_complete_evt(hdev, ev->status, &ev->bdaddr, ev->bdaddr_type, 5795 &ev->local_rpa, ev->role, le16_to_cpu(ev->handle), 5796 le16_to_cpu(ev->interval), 5797 le16_to_cpu(ev->latency), 5798 le16_to_cpu(ev->supervision_timeout)); 5799 } 5800 5801 static void hci_le_ext_adv_term_evt(struct hci_dev *hdev, void *data, 5802 struct sk_buff *skb) 5803 { 5804 struct hci_evt_le_ext_adv_set_term *ev = data; 5805 struct hci_conn *conn; 5806 struct adv_info *adv, *n; 5807 5808 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 5809 5810 /* The Bluetooth Core 5.3 specification clearly states that this event 5811 * shall not be sent when the Host disables the advertising set. So in 5812 * case of HCI_ERROR_CANCELLED_BY_HOST, just ignore the event. 5813 * 5814 * When the Host disables an advertising set, all cleanup is done via 5815 * its command callback and not needed to be duplicated here. 5816 */ 5817 if (ev->status == HCI_ERROR_CANCELLED_BY_HOST) { 5818 bt_dev_warn_ratelimited(hdev, "Unexpected advertising set terminated event"); 5819 return; 5820 } 5821 5822 hci_dev_lock(hdev); 5823 5824 adv = hci_find_adv_instance(hdev, ev->handle); 5825 5826 if (ev->status) { 5827 if (!adv) 5828 goto unlock; 5829 5830 /* Remove advertising as it has been terminated */ 5831 hci_remove_adv_instance(hdev, ev->handle); 5832 mgmt_advertising_removed(NULL, hdev, ev->handle); 5833 5834 list_for_each_entry_safe(adv, n, &hdev->adv_instances, list) { 5835 if (adv->enabled) 5836 goto unlock; 5837 } 5838 5839 /* We are no longer advertising, clear HCI_LE_ADV */ 5840 hci_dev_clear_flag(hdev, HCI_LE_ADV); 5841 goto unlock; 5842 } 5843 5844 if (adv) 5845 adv->enabled = false; 5846 5847 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->conn_handle)); 5848 if (conn) { 5849 /* Store handle in the connection so the correct advertising 5850 * instance can be re-enabled when disconnected. 5851 */ 5852 conn->adv_instance = ev->handle; 5853 5854 if (hdev->adv_addr_type != ADDR_LE_DEV_RANDOM || 5855 bacmp(&conn->resp_addr, BDADDR_ANY)) 5856 goto unlock; 5857 5858 if (!ev->handle) { 5859 bacpy(&conn->resp_addr, &hdev->random_addr); 5860 goto unlock; 5861 } 5862 5863 if (adv) 5864 bacpy(&conn->resp_addr, &adv->random_addr); 5865 } 5866 5867 unlock: 5868 hci_dev_unlock(hdev); 5869 } 5870 5871 static void hci_le_conn_update_complete_evt(struct hci_dev *hdev, void *data, 5872 struct sk_buff *skb) 5873 { 5874 struct hci_ev_le_conn_update_complete *ev = data; 5875 struct hci_conn *conn; 5876 5877 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 5878 5879 if (ev->status) 5880 return; 5881 5882 hci_dev_lock(hdev); 5883 5884 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle)); 5885 if (conn) { 5886 conn->le_conn_interval = le16_to_cpu(ev->interval); 5887 conn->le_conn_latency = le16_to_cpu(ev->latency); 5888 conn->le_supv_timeout = le16_to_cpu(ev->supervision_timeout); 5889 } 5890 5891 hci_dev_unlock(hdev); 5892 } 5893 5894 /* This function requires the caller holds hdev->lock */ 5895 static struct hci_conn *check_pending_le_conn(struct hci_dev *hdev, 5896 bdaddr_t *addr, 5897 u8 addr_type, bool addr_resolved, 5898 u8 adv_type, u8 phy, u8 sec_phy) 5899 { 5900 struct hci_conn *conn; 5901 struct hci_conn_params *params; 5902 5903 /* If the event is not connectable don't proceed further */ 5904 if (adv_type != LE_ADV_IND && adv_type != LE_ADV_DIRECT_IND) 5905 return NULL; 5906 5907 /* Ignore if the device is blocked or hdev is suspended */ 5908 if (hci_bdaddr_list_lookup(&hdev->reject_list, addr, addr_type) || 5909 hdev->suspended) 5910 return NULL; 5911 5912 /* Most controller will fail if we try to create new connections 5913 * while we have an existing one in peripheral role. 5914 */ 5915 if (hdev->conn_hash.le_num_peripheral > 0 && 5916 (hci_test_quirk(hdev, HCI_QUIRK_BROKEN_LE_STATES) || 5917 !(hdev->le_states[3] & 0x10))) 5918 return NULL; 5919 5920 /* If we're not connectable only connect devices that we have in 5921 * our pend_le_conns list. 5922 */ 5923 params = hci_pend_le_action_lookup(&hdev->pend_le_conns, addr, 5924 addr_type); 5925 if (!params) 5926 return NULL; 5927 5928 if (!params->explicit_connect) { 5929 switch (params->auto_connect) { 5930 case HCI_AUTO_CONN_DIRECT: 5931 /* Only devices advertising with ADV_DIRECT_IND are 5932 * triggering a connection attempt. This is allowing 5933 * incoming connections from peripheral devices. 5934 */ 5935 if (adv_type != LE_ADV_DIRECT_IND) 5936 return NULL; 5937 break; 5938 case HCI_AUTO_CONN_ALWAYS: 5939 /* Devices advertising with ADV_IND or ADV_DIRECT_IND 5940 * are triggering a connection attempt. This means 5941 * that incoming connections from peripheral device are 5942 * accepted and also outgoing connections to peripheral 5943 * devices are established when found. 5944 */ 5945 break; 5946 default: 5947 return NULL; 5948 } 5949 } 5950 5951 conn = hci_connect_le(hdev, addr, addr_type, addr_resolved, 5952 BT_SECURITY_LOW, hdev->def_le_autoconnect_timeout, 5953 HCI_ROLE_MASTER, phy, sec_phy); 5954 if (!IS_ERR(conn)) { 5955 /* If HCI_AUTO_CONN_EXPLICIT is set, conn is already owned 5956 * by higher layer that tried to connect, if no then 5957 * store the pointer since we don't really have any 5958 * other owner of the object besides the params that 5959 * triggered it. This way we can abort the connection if 5960 * the parameters get removed and keep the reference 5961 * count consistent once the connection is established. 5962 */ 5963 5964 if (!params->explicit_connect) 5965 params->conn = hci_conn_get(conn); 5966 5967 return conn; 5968 } 5969 5970 switch (PTR_ERR(conn)) { 5971 case -EBUSY: 5972 /* If hci_connect() returns -EBUSY it means there is already 5973 * an LE connection attempt going on. Since controllers don't 5974 * support more than one connection attempt at the time, we 5975 * don't consider this an error case. 5976 */ 5977 break; 5978 default: 5979 BT_DBG("Failed to connect: err %ld", PTR_ERR(conn)); 5980 return NULL; 5981 } 5982 5983 return NULL; 5984 } 5985 5986 static void process_adv_report(struct hci_dev *hdev, u8 type, bdaddr_t *bdaddr, 5987 u8 bdaddr_type, bdaddr_t *direct_addr, 5988 u8 direct_addr_type, u8 phy, u8 sec_phy, s8 rssi, 5989 u8 *data, u8 len, bool ext_adv, bool ctl_time, 5990 u64 instant) 5991 { 5992 struct discovery_state *d = &hdev->discovery; 5993 struct smp_irk *irk; 5994 struct hci_conn *conn; 5995 bool match, bdaddr_resolved; 5996 u32 flags; 5997 u8 *ptr; 5998 5999 switch (type) { 6000 case LE_ADV_IND: 6001 case LE_ADV_DIRECT_IND: 6002 case LE_ADV_SCAN_IND: 6003 case LE_ADV_NONCONN_IND: 6004 case LE_ADV_SCAN_RSP: 6005 break; 6006 default: 6007 bt_dev_err_ratelimited(hdev, "unknown advertising packet " 6008 "type: 0x%02x", type); 6009 return; 6010 } 6011 6012 if (len > max_adv_len(hdev)) { 6013 bt_dev_err_ratelimited(hdev, 6014 "adv larger than maximum supported"); 6015 return; 6016 } 6017 6018 /* Find the end of the data in case the report contains padded zero 6019 * bytes at the end causing an invalid length value. 6020 * 6021 * When data is NULL, len is 0 so there is no need for extra ptr 6022 * check as 'ptr < data + 0' is already false in such case. 6023 */ 6024 for (ptr = data; ptr < data + len && *ptr; ptr += *ptr + 1) { 6025 if (ptr + 1 + *ptr > data + len) 6026 break; 6027 } 6028 6029 /* Adjust for actual length. This handles the case when remote 6030 * device is advertising with incorrect data length. 6031 */ 6032 len = ptr - data; 6033 6034 /* If the direct address is present, then this report is from 6035 * a LE Direct Advertising Report event. In that case it is 6036 * important to see if the address is matching the local 6037 * controller address. 6038 * 6039 * If local privacy is not enable the controller shall not be 6040 * generating such event since according to its documentation it is only 6041 * valid for filter_policy 0x02 and 0x03, but the fact that it did 6042 * generate LE Direct Advertising Report means it is probably broken and 6043 * won't generate any other event which can potentially break 6044 * auto-connect logic so in case local privacy is not enable this 6045 * ignores the direct_addr so it works as a regular report. 6046 */ 6047 if (!hci_dev_test_flag(hdev, HCI_MESH) && direct_addr && 6048 hci_dev_test_flag(hdev, HCI_PRIVACY)) { 6049 direct_addr_type = ev_bdaddr_type(hdev, direct_addr_type, 6050 &bdaddr_resolved); 6051 6052 /* Only resolvable random addresses are valid for these 6053 * kind of reports and others can be ignored. 6054 */ 6055 if (!hci_bdaddr_is_rpa(direct_addr, direct_addr_type)) 6056 return; 6057 6058 /* If the local IRK of the controller does not match 6059 * with the resolvable random address provided, then 6060 * this report can be ignored. 6061 */ 6062 if (!smp_irk_matches(hdev, hdev->irk, direct_addr)) 6063 return; 6064 } 6065 6066 /* Check if we need to convert to identity address */ 6067 irk = hci_get_irk(hdev, bdaddr, bdaddr_type); 6068 if (irk) { 6069 bdaddr = &irk->bdaddr; 6070 bdaddr_type = irk->addr_type; 6071 } 6072 6073 bdaddr_type = ev_bdaddr_type(hdev, bdaddr_type, &bdaddr_resolved); 6074 6075 /* Check if we have been requested to connect to this device. 6076 * 6077 * direct_addr is set only for directed advertising reports (it is NULL 6078 * for advertising reports) and is already verified to be RPA above. 6079 */ 6080 conn = check_pending_le_conn(hdev, bdaddr, bdaddr_type, bdaddr_resolved, 6081 type, phy, sec_phy); 6082 if (!ext_adv && conn && type == LE_ADV_IND && 6083 len <= max_adv_len(hdev)) { 6084 /* Store report for later inclusion by 6085 * mgmt_device_connected 6086 */ 6087 memcpy(conn->le_adv_data, data, len); 6088 conn->le_adv_data_len = len; 6089 } 6090 6091 if (type == LE_ADV_NONCONN_IND || type == LE_ADV_SCAN_IND) 6092 flags = MGMT_DEV_FOUND_NOT_CONNECTABLE; 6093 else 6094 flags = 0; 6095 6096 /* All scan results should be sent up for Mesh systems */ 6097 if (hci_dev_test_flag(hdev, HCI_MESH)) { 6098 mgmt_device_found(hdev, bdaddr, LE_LINK, bdaddr_type, NULL, 6099 rssi, flags, data, len, NULL, 0, instant); 6100 return; 6101 } 6102 6103 /* Passive scanning shouldn't trigger any device found events, 6104 * except for devices marked as CONN_REPORT for which we do send 6105 * device found events, or advertisement monitoring requested. 6106 */ 6107 if (hdev->le_scan_type == LE_SCAN_PASSIVE) { 6108 if (type == LE_ADV_DIRECT_IND) 6109 return; 6110 6111 if (!hci_pend_le_action_lookup(&hdev->pend_le_reports, 6112 bdaddr, bdaddr_type) && 6113 idr_is_empty(&hdev->adv_monitors_idr)) 6114 return; 6115 6116 mgmt_device_found(hdev, bdaddr, LE_LINK, bdaddr_type, NULL, 6117 rssi, flags, data, len, NULL, 0, 0); 6118 return; 6119 } 6120 6121 /* When receiving a scan response, then there is no way to 6122 * know if the remote device is connectable or not. However 6123 * since scan responses are merged with a previously seen 6124 * advertising report, the flags field from that report 6125 * will be used. 6126 * 6127 * In the unlikely case that a controller just sends a scan 6128 * response event that doesn't match the pending report, then 6129 * it is marked as a standalone SCAN_RSP. 6130 */ 6131 if (type == LE_ADV_SCAN_RSP) 6132 flags = MGMT_DEV_FOUND_SCAN_RSP; 6133 6134 /* If there's nothing pending either store the data from this 6135 * event or send an immediate device found event if the data 6136 * should not be stored for later. 6137 */ 6138 if (!has_pending_adv_report(hdev)) { 6139 /* If the report will trigger a SCAN_REQ store it for 6140 * later merging. 6141 */ 6142 if (!ext_adv && (type == LE_ADV_IND || 6143 type == LE_ADV_SCAN_IND)) { 6144 store_pending_adv_report(hdev, bdaddr, bdaddr_type, 6145 rssi, flags, data, len); 6146 return; 6147 } 6148 6149 mgmt_device_found(hdev, bdaddr, LE_LINK, bdaddr_type, NULL, 6150 rssi, flags, data, len, NULL, 0, 0); 6151 return; 6152 } 6153 6154 /* Check if the pending report is for the same device as the new one */ 6155 match = (!bacmp(bdaddr, &d->last_adv_addr) && 6156 bdaddr_type == d->last_adv_addr_type); 6157 6158 /* If the pending data doesn't match this report or this isn't a 6159 * scan response (e.g. we got a duplicate ADV_IND) then force 6160 * sending of the pending data. 6161 */ 6162 if (type != LE_ADV_SCAN_RSP || !match) { 6163 /* Send out whatever is in the cache, but skip duplicates */ 6164 if (!match) 6165 mgmt_device_found(hdev, &d->last_adv_addr, LE_LINK, 6166 d->last_adv_addr_type, NULL, 6167 d->last_adv_rssi, d->last_adv_flags, 6168 d->last_adv_data, 6169 d->last_adv_data_len, NULL, 0, 0); 6170 6171 /* If the new report will trigger a SCAN_REQ store it for 6172 * later merging. 6173 */ 6174 if (!ext_adv && (type == LE_ADV_IND || 6175 type == LE_ADV_SCAN_IND)) { 6176 store_pending_adv_report(hdev, bdaddr, bdaddr_type, 6177 rssi, flags, data, len); 6178 return; 6179 } 6180 6181 /* The advertising reports cannot be merged, so clear 6182 * the pending report and send out a device found event. 6183 */ 6184 clear_pending_adv_report(hdev); 6185 mgmt_device_found(hdev, bdaddr, LE_LINK, bdaddr_type, NULL, 6186 rssi, flags, data, len, NULL, 0, 0); 6187 return; 6188 } 6189 6190 /* If we get here we've got a pending ADV_IND or ADV_SCAN_IND and 6191 * the new event is a SCAN_RSP. We can therefore proceed with 6192 * sending a merged device found event. 6193 */ 6194 mgmt_device_found(hdev, &d->last_adv_addr, LE_LINK, 6195 d->last_adv_addr_type, NULL, rssi, d->last_adv_flags, 6196 d->last_adv_data, d->last_adv_data_len, data, len, 0); 6197 clear_pending_adv_report(hdev); 6198 } 6199 6200 static void hci_le_adv_report_evt(struct hci_dev *hdev, void *data, 6201 struct sk_buff *skb) 6202 { 6203 struct hci_ev_le_advertising_report *ev = data; 6204 u64 instant = jiffies; 6205 6206 if (!ev->num) 6207 return; 6208 6209 hci_dev_lock(hdev); 6210 6211 while (ev->num--) { 6212 struct hci_ev_le_advertising_info *info; 6213 s8 rssi; 6214 6215 info = hci_le_ev_skb_pull(hdev, skb, 6216 HCI_EV_LE_ADVERTISING_REPORT, 6217 sizeof(*info)); 6218 if (!info) 6219 break; 6220 6221 if (!hci_le_ev_skb_pull(hdev, skb, HCI_EV_LE_ADVERTISING_REPORT, 6222 info->length + 1)) 6223 break; 6224 6225 if (info->length <= max_adv_len(hdev)) { 6226 rssi = info->data[info->length]; 6227 process_adv_report(hdev, info->type, &info->bdaddr, 6228 info->bdaddr_type, NULL, 0, 6229 HCI_ADV_PHY_1M, 0, rssi, 6230 info->data, info->length, false, 6231 false, instant); 6232 } else { 6233 bt_dev_err(hdev, "Dropping invalid advertising data"); 6234 } 6235 } 6236 6237 hci_dev_unlock(hdev); 6238 } 6239 6240 static u8 ext_evt_type_to_legacy(struct hci_dev *hdev, u16 evt_type) 6241 { 6242 if (evt_type & LE_EXT_ADV_LEGACY_PDU) { 6243 switch (evt_type) { 6244 case LE_LEGACY_ADV_IND: 6245 return LE_ADV_IND; 6246 case LE_LEGACY_ADV_DIRECT_IND: 6247 return LE_ADV_DIRECT_IND; 6248 case LE_LEGACY_ADV_SCAN_IND: 6249 return LE_ADV_SCAN_IND; 6250 case LE_LEGACY_NONCONN_IND: 6251 return LE_ADV_NONCONN_IND; 6252 case LE_LEGACY_SCAN_RSP_ADV: 6253 case LE_LEGACY_SCAN_RSP_ADV_SCAN: 6254 return LE_ADV_SCAN_RSP; 6255 } 6256 6257 goto invalid; 6258 } 6259 6260 if (evt_type & LE_EXT_ADV_CONN_IND) { 6261 if (evt_type & LE_EXT_ADV_DIRECT_IND) 6262 return LE_ADV_DIRECT_IND; 6263 6264 return LE_ADV_IND; 6265 } 6266 6267 if (evt_type & LE_EXT_ADV_SCAN_RSP) 6268 return LE_ADV_SCAN_RSP; 6269 6270 if (evt_type & LE_EXT_ADV_SCAN_IND) 6271 return LE_ADV_SCAN_IND; 6272 6273 if (evt_type == LE_EXT_ADV_NON_CONN_IND || 6274 evt_type & LE_EXT_ADV_DIRECT_IND) 6275 return LE_ADV_NONCONN_IND; 6276 6277 invalid: 6278 bt_dev_err_ratelimited(hdev, "Unknown advertising packet type: 0x%02x", 6279 evt_type); 6280 6281 return LE_ADV_INVALID; 6282 } 6283 6284 static void hci_le_ext_adv_report_evt(struct hci_dev *hdev, void *data, 6285 struct sk_buff *skb) 6286 { 6287 struct hci_ev_le_ext_adv_report *ev = data; 6288 u64 instant = jiffies; 6289 6290 if (!ev->num) 6291 return; 6292 6293 hci_dev_lock(hdev); 6294 6295 while (ev->num--) { 6296 struct hci_ev_le_ext_adv_info *info; 6297 u8 legacy_evt_type; 6298 u16 evt_type; 6299 6300 info = hci_le_ev_skb_pull(hdev, skb, HCI_EV_LE_EXT_ADV_REPORT, 6301 sizeof(*info)); 6302 if (!info) 6303 break; 6304 6305 if (!hci_le_ev_skb_pull(hdev, skb, HCI_EV_LE_EXT_ADV_REPORT, 6306 info->length)) 6307 break; 6308 6309 evt_type = __le16_to_cpu(info->type) & LE_EXT_ADV_EVT_TYPE_MASK; 6310 legacy_evt_type = ext_evt_type_to_legacy(hdev, evt_type); 6311 6312 if (hci_test_quirk(hdev, 6313 HCI_QUIRK_FIXUP_LE_EXT_ADV_REPORT_PHY)) { 6314 info->primary_phy &= 0x1f; 6315 info->secondary_phy &= 0x1f; 6316 } 6317 6318 /* Check if PA Sync is pending and if the hci_conn SID has not 6319 * been set update it. 6320 */ 6321 if (hci_dev_test_flag(hdev, HCI_PA_SYNC)) { 6322 struct hci_conn *conn; 6323 6324 conn = hci_conn_hash_lookup_create_pa_sync(hdev); 6325 if (conn && conn->sid == HCI_SID_INVALID) 6326 conn->sid = info->sid; 6327 } 6328 6329 if (legacy_evt_type != LE_ADV_INVALID) { 6330 process_adv_report(hdev, legacy_evt_type, &info->bdaddr, 6331 info->bdaddr_type, NULL, 0, 6332 info->primary_phy, 6333 info->secondary_phy, 6334 info->rssi, info->data, info->length, 6335 !(evt_type & LE_EXT_ADV_LEGACY_PDU), 6336 false, instant); 6337 } 6338 } 6339 6340 hci_dev_unlock(hdev); 6341 } 6342 6343 static int hci_le_pa_term_sync(struct hci_dev *hdev, __le16 handle) 6344 { 6345 struct hci_cp_le_pa_term_sync cp; 6346 6347 memset(&cp, 0, sizeof(cp)); 6348 cp.handle = handle; 6349 6350 return hci_send_cmd(hdev, HCI_OP_LE_PA_TERM_SYNC, sizeof(cp), &cp); 6351 } 6352 6353 static void hci_le_pa_sync_estabilished_evt(struct hci_dev *hdev, void *data, 6354 struct sk_buff *skb) 6355 { 6356 struct hci_ev_le_pa_sync_established *ev = data; 6357 int mask = hdev->link_mode; 6358 __u8 flags = 0; 6359 struct hci_conn *pa_sync, *conn; 6360 6361 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 6362 6363 hci_dev_lock(hdev); 6364 6365 hci_dev_clear_flag(hdev, HCI_PA_SYNC); 6366 6367 conn = hci_conn_hash_lookup_create_pa_sync(hdev); 6368 if (!conn) { 6369 bt_dev_err(hdev, 6370 "Unable to find connection for dst %pMR sid 0x%2.2x", 6371 &ev->bdaddr, ev->sid); 6372 goto unlock; 6373 } 6374 6375 clear_bit(HCI_CONN_CREATE_PA_SYNC, &conn->flags); 6376 6377 conn->sync_handle = le16_to_cpu(ev->handle); 6378 conn->sid = HCI_SID_INVALID; 6379 6380 mask |= hci_proto_connect_ind(hdev, &ev->bdaddr, BIS_LINK, 6381 &flags); 6382 if (!(mask & HCI_LM_ACCEPT)) { 6383 hci_le_pa_term_sync(hdev, ev->handle); 6384 goto unlock; 6385 } 6386 6387 if (!(flags & HCI_PROTO_DEFER)) 6388 goto unlock; 6389 6390 /* Add connection to indicate PA sync event */ 6391 pa_sync = hci_conn_add_unset(hdev, BIS_LINK, BDADDR_ANY, 6392 HCI_ROLE_SLAVE); 6393 6394 if (IS_ERR(pa_sync)) 6395 goto unlock; 6396 6397 pa_sync->sync_handle = le16_to_cpu(ev->handle); 6398 6399 if (ev->status) { 6400 set_bit(HCI_CONN_PA_SYNC_FAILED, &pa_sync->flags); 6401 6402 /* Notify iso layer */ 6403 hci_connect_cfm(pa_sync, ev->status); 6404 } 6405 6406 unlock: 6407 hci_dev_unlock(hdev); 6408 } 6409 6410 static void hci_le_per_adv_report_evt(struct hci_dev *hdev, void *data, 6411 struct sk_buff *skb) 6412 { 6413 struct hci_ev_le_per_adv_report *ev = data; 6414 int mask = hdev->link_mode; 6415 __u8 flags = 0; 6416 struct hci_conn *pa_sync; 6417 6418 bt_dev_dbg(hdev, "sync_handle 0x%4.4x", le16_to_cpu(ev->sync_handle)); 6419 6420 hci_dev_lock(hdev); 6421 6422 mask |= hci_proto_connect_ind(hdev, BDADDR_ANY, BIS_LINK, &flags); 6423 if (!(mask & HCI_LM_ACCEPT)) 6424 goto unlock; 6425 6426 if (!(flags & HCI_PROTO_DEFER)) 6427 goto unlock; 6428 6429 pa_sync = hci_conn_hash_lookup_pa_sync_handle 6430 (hdev, 6431 le16_to_cpu(ev->sync_handle)); 6432 6433 if (!pa_sync) 6434 goto unlock; 6435 6436 if (ev->data_status == LE_PA_DATA_COMPLETE && 6437 !test_and_set_bit(HCI_CONN_PA_SYNC, &pa_sync->flags)) { 6438 /* Notify iso layer */ 6439 hci_connect_cfm(pa_sync, 0); 6440 6441 /* Notify MGMT layer */ 6442 mgmt_device_connected(hdev, pa_sync, NULL, 0); 6443 } 6444 6445 unlock: 6446 hci_dev_unlock(hdev); 6447 } 6448 6449 static void hci_le_remote_feat_complete_evt(struct hci_dev *hdev, void *data, 6450 struct sk_buff *skb) 6451 { 6452 struct hci_ev_le_remote_feat_complete *ev = data; 6453 struct hci_conn *conn; 6454 6455 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 6456 6457 hci_dev_lock(hdev); 6458 6459 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle)); 6460 if (conn) { 6461 if (!ev->status) 6462 memcpy(conn->features[0], ev->features, 8); 6463 6464 if (conn->state == BT_CONFIG) { 6465 __u8 status; 6466 6467 /* If the local controller supports peripheral-initiated 6468 * features exchange, but the remote controller does 6469 * not, then it is possible that the error code 0x1a 6470 * for unsupported remote feature gets returned. 6471 * 6472 * In this specific case, allow the connection to 6473 * transition into connected state and mark it as 6474 * successful. 6475 */ 6476 if (!conn->out && ev->status == HCI_ERROR_UNSUPPORTED_REMOTE_FEATURE && 6477 (hdev->le_features[0] & HCI_LE_PERIPHERAL_FEATURES)) 6478 status = 0x00; 6479 else 6480 status = ev->status; 6481 6482 conn->state = BT_CONNECTED; 6483 hci_connect_cfm(conn, status); 6484 hci_conn_drop(conn); 6485 } 6486 } 6487 6488 hci_dev_unlock(hdev); 6489 } 6490 6491 static void hci_le_ltk_request_evt(struct hci_dev *hdev, void *data, 6492 struct sk_buff *skb) 6493 { 6494 struct hci_ev_le_ltk_req *ev = data; 6495 struct hci_cp_le_ltk_reply cp; 6496 struct hci_cp_le_ltk_neg_reply neg; 6497 struct hci_conn *conn; 6498 struct smp_ltk *ltk; 6499 6500 bt_dev_dbg(hdev, "handle 0x%4.4x", __le16_to_cpu(ev->handle)); 6501 6502 hci_dev_lock(hdev); 6503 6504 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle)); 6505 if (conn == NULL) 6506 goto not_found; 6507 6508 ltk = hci_find_ltk(hdev, &conn->dst, conn->dst_type, conn->role); 6509 if (!ltk) 6510 goto not_found; 6511 6512 if (smp_ltk_is_sc(ltk)) { 6513 /* With SC both EDiv and Rand are set to zero */ 6514 if (ev->ediv || ev->rand) 6515 goto not_found; 6516 } else { 6517 /* For non-SC keys check that EDiv and Rand match */ 6518 if (ev->ediv != ltk->ediv || ev->rand != ltk->rand) 6519 goto not_found; 6520 } 6521 6522 memcpy(cp.ltk, ltk->val, ltk->enc_size); 6523 memset(cp.ltk + ltk->enc_size, 0, sizeof(cp.ltk) - ltk->enc_size); 6524 cp.handle = cpu_to_le16(conn->handle); 6525 6526 conn->pending_sec_level = smp_ltk_sec_level(ltk); 6527 6528 conn->enc_key_size = ltk->enc_size; 6529 6530 hci_send_cmd(hdev, HCI_OP_LE_LTK_REPLY, sizeof(cp), &cp); 6531 6532 /* Ref. Bluetooth Core SPEC pages 1975 and 2004. STK is a 6533 * temporary key used to encrypt a connection following 6534 * pairing. It is used during the Encrypted Session Setup to 6535 * distribute the keys. Later, security can be re-established 6536 * using a distributed LTK. 6537 */ 6538 if (ltk->type == SMP_STK) { 6539 set_bit(HCI_CONN_STK_ENCRYPT, &conn->flags); 6540 list_del_rcu(<k->list); 6541 kfree_rcu(ltk, rcu); 6542 } else { 6543 clear_bit(HCI_CONN_STK_ENCRYPT, &conn->flags); 6544 } 6545 6546 hci_dev_unlock(hdev); 6547 6548 return; 6549 6550 not_found: 6551 neg.handle = ev->handle; 6552 hci_send_cmd(hdev, HCI_OP_LE_LTK_NEG_REPLY, sizeof(neg), &neg); 6553 hci_dev_unlock(hdev); 6554 } 6555 6556 static void send_conn_param_neg_reply(struct hci_dev *hdev, u16 handle, 6557 u8 reason) 6558 { 6559 struct hci_cp_le_conn_param_req_neg_reply cp; 6560 6561 cp.handle = cpu_to_le16(handle); 6562 cp.reason = reason; 6563 6564 hci_send_cmd(hdev, HCI_OP_LE_CONN_PARAM_REQ_NEG_REPLY, sizeof(cp), 6565 &cp); 6566 } 6567 6568 static void hci_le_remote_conn_param_req_evt(struct hci_dev *hdev, void *data, 6569 struct sk_buff *skb) 6570 { 6571 struct hci_ev_le_remote_conn_param_req *ev = data; 6572 struct hci_cp_le_conn_param_req_reply cp; 6573 struct hci_conn *hcon; 6574 u16 handle, min, max, latency, timeout; 6575 6576 bt_dev_dbg(hdev, "handle 0x%4.4x", __le16_to_cpu(ev->handle)); 6577 6578 handle = le16_to_cpu(ev->handle); 6579 min = le16_to_cpu(ev->interval_min); 6580 max = le16_to_cpu(ev->interval_max); 6581 latency = le16_to_cpu(ev->latency); 6582 timeout = le16_to_cpu(ev->timeout); 6583 6584 hcon = hci_conn_hash_lookup_handle(hdev, handle); 6585 if (!hcon || hcon->state != BT_CONNECTED) 6586 return send_conn_param_neg_reply(hdev, handle, 6587 HCI_ERROR_UNKNOWN_CONN_ID); 6588 6589 if (max > hcon->le_conn_max_interval) 6590 return send_conn_param_neg_reply(hdev, handle, 6591 HCI_ERROR_INVALID_LL_PARAMS); 6592 6593 if (hci_check_conn_params(min, max, latency, timeout)) 6594 return send_conn_param_neg_reply(hdev, handle, 6595 HCI_ERROR_INVALID_LL_PARAMS); 6596 6597 if (hcon->role == HCI_ROLE_MASTER) { 6598 struct hci_conn_params *params; 6599 u8 store_hint; 6600 6601 hci_dev_lock(hdev); 6602 6603 params = hci_conn_params_lookup(hdev, &hcon->dst, 6604 hcon->dst_type); 6605 if (params) { 6606 params->conn_min_interval = min; 6607 params->conn_max_interval = max; 6608 params->conn_latency = latency; 6609 params->supervision_timeout = timeout; 6610 store_hint = 0x01; 6611 } else { 6612 store_hint = 0x00; 6613 } 6614 6615 hci_dev_unlock(hdev); 6616 6617 mgmt_new_conn_param(hdev, &hcon->dst, hcon->dst_type, 6618 store_hint, min, max, latency, timeout); 6619 } 6620 6621 cp.handle = ev->handle; 6622 cp.interval_min = ev->interval_min; 6623 cp.interval_max = ev->interval_max; 6624 cp.latency = ev->latency; 6625 cp.timeout = ev->timeout; 6626 cp.min_ce_len = 0; 6627 cp.max_ce_len = 0; 6628 6629 hci_send_cmd(hdev, HCI_OP_LE_CONN_PARAM_REQ_REPLY, sizeof(cp), &cp); 6630 } 6631 6632 static void hci_le_direct_adv_report_evt(struct hci_dev *hdev, void *data, 6633 struct sk_buff *skb) 6634 { 6635 struct hci_ev_le_direct_adv_report *ev = data; 6636 u64 instant = jiffies; 6637 int i; 6638 6639 if (!hci_le_ev_skb_pull(hdev, skb, HCI_EV_LE_DIRECT_ADV_REPORT, 6640 flex_array_size(ev, info, ev->num))) 6641 return; 6642 6643 if (!ev->num) 6644 return; 6645 6646 hci_dev_lock(hdev); 6647 6648 for (i = 0; i < ev->num; i++) { 6649 struct hci_ev_le_direct_adv_info *info = &ev->info[i]; 6650 6651 process_adv_report(hdev, info->type, &info->bdaddr, 6652 info->bdaddr_type, &info->direct_addr, 6653 info->direct_addr_type, HCI_ADV_PHY_1M, 0, 6654 info->rssi, NULL, 0, false, false, instant); 6655 } 6656 6657 hci_dev_unlock(hdev); 6658 } 6659 6660 static void hci_le_phy_update_evt(struct hci_dev *hdev, void *data, 6661 struct sk_buff *skb) 6662 { 6663 struct hci_ev_le_phy_update_complete *ev = data; 6664 struct hci_conn *conn; 6665 6666 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 6667 6668 if (ev->status) 6669 return; 6670 6671 hci_dev_lock(hdev); 6672 6673 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle)); 6674 if (!conn) 6675 goto unlock; 6676 6677 conn->le_tx_phy = ev->tx_phy; 6678 conn->le_rx_phy = ev->rx_phy; 6679 6680 unlock: 6681 hci_dev_unlock(hdev); 6682 } 6683 6684 static void hci_le_cis_estabilished_evt(struct hci_dev *hdev, void *data, 6685 struct sk_buff *skb) 6686 { 6687 struct hci_evt_le_cis_established *ev = data; 6688 struct hci_conn *conn; 6689 struct bt_iso_qos *qos; 6690 bool pending = false; 6691 u16 handle = __le16_to_cpu(ev->handle); 6692 u32 c_sdu_interval, p_sdu_interval; 6693 6694 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 6695 6696 hci_dev_lock(hdev); 6697 6698 conn = hci_conn_hash_lookup_handle(hdev, handle); 6699 if (!conn) { 6700 bt_dev_err(hdev, 6701 "Unable to find connection with handle 0x%4.4x", 6702 handle); 6703 goto unlock; 6704 } 6705 6706 if (conn->type != CIS_LINK) { 6707 bt_dev_err(hdev, 6708 "Invalid connection link type handle 0x%4.4x", 6709 handle); 6710 goto unlock; 6711 } 6712 6713 qos = &conn->iso_qos; 6714 6715 pending = test_and_clear_bit(HCI_CONN_CREATE_CIS, &conn->flags); 6716 6717 /* BLUETOOTH CORE SPECIFICATION Version 5.4 | Vol 6, Part G 6718 * page 3075: 6719 * Transport_Latency_C_To_P = CIG_Sync_Delay + (FT_C_To_P) × 6720 * ISO_Interval + SDU_Interval_C_To_P 6721 * ... 6722 * SDU_Interval = (CIG_Sync_Delay + (FT) x ISO_Interval) - 6723 * Transport_Latency 6724 */ 6725 c_sdu_interval = (get_unaligned_le24(ev->cig_sync_delay) + 6726 (ev->c_ft * le16_to_cpu(ev->interval) * 1250)) - 6727 get_unaligned_le24(ev->c_latency); 6728 p_sdu_interval = (get_unaligned_le24(ev->cig_sync_delay) + 6729 (ev->p_ft * le16_to_cpu(ev->interval) * 1250)) - 6730 get_unaligned_le24(ev->p_latency); 6731 6732 switch (conn->role) { 6733 case HCI_ROLE_SLAVE: 6734 qos->ucast.in.interval = c_sdu_interval; 6735 qos->ucast.out.interval = p_sdu_interval; 6736 /* Convert Transport Latency (us) to Latency (msec) */ 6737 qos->ucast.in.latency = 6738 DIV_ROUND_CLOSEST(get_unaligned_le24(ev->c_latency), 6739 1000); 6740 qos->ucast.out.latency = 6741 DIV_ROUND_CLOSEST(get_unaligned_le24(ev->p_latency), 6742 1000); 6743 qos->ucast.in.sdu = le16_to_cpu(ev->c_mtu); 6744 qos->ucast.out.sdu = le16_to_cpu(ev->p_mtu); 6745 qos->ucast.in.phy = ev->c_phy; 6746 qos->ucast.out.phy = ev->p_phy; 6747 break; 6748 case HCI_ROLE_MASTER: 6749 qos->ucast.in.interval = p_sdu_interval; 6750 qos->ucast.out.interval = c_sdu_interval; 6751 /* Convert Transport Latency (us) to Latency (msec) */ 6752 qos->ucast.out.latency = 6753 DIV_ROUND_CLOSEST(get_unaligned_le24(ev->c_latency), 6754 1000); 6755 qos->ucast.in.latency = 6756 DIV_ROUND_CLOSEST(get_unaligned_le24(ev->p_latency), 6757 1000); 6758 qos->ucast.out.sdu = le16_to_cpu(ev->c_mtu); 6759 qos->ucast.in.sdu = le16_to_cpu(ev->p_mtu); 6760 qos->ucast.out.phy = ev->c_phy; 6761 qos->ucast.in.phy = ev->p_phy; 6762 break; 6763 } 6764 6765 if (!ev->status) { 6766 conn->state = BT_CONNECTED; 6767 hci_debugfs_create_conn(conn); 6768 hci_conn_add_sysfs(conn); 6769 hci_iso_setup_path(conn); 6770 goto unlock; 6771 } 6772 6773 conn->state = BT_CLOSED; 6774 hci_connect_cfm(conn, ev->status); 6775 hci_conn_del(conn); 6776 6777 unlock: 6778 if (pending) 6779 hci_le_create_cis_pending(hdev); 6780 6781 hci_dev_unlock(hdev); 6782 } 6783 6784 static void hci_le_reject_cis(struct hci_dev *hdev, __le16 handle) 6785 { 6786 struct hci_cp_le_reject_cis cp; 6787 6788 memset(&cp, 0, sizeof(cp)); 6789 cp.handle = handle; 6790 cp.reason = HCI_ERROR_REJ_BAD_ADDR; 6791 hci_send_cmd(hdev, HCI_OP_LE_REJECT_CIS, sizeof(cp), &cp); 6792 } 6793 6794 static void hci_le_accept_cis(struct hci_dev *hdev, __le16 handle) 6795 { 6796 struct hci_cp_le_accept_cis cp; 6797 6798 memset(&cp, 0, sizeof(cp)); 6799 cp.handle = handle; 6800 hci_send_cmd(hdev, HCI_OP_LE_ACCEPT_CIS, sizeof(cp), &cp); 6801 } 6802 6803 static void hci_le_cis_req_evt(struct hci_dev *hdev, void *data, 6804 struct sk_buff *skb) 6805 { 6806 struct hci_evt_le_cis_req *ev = data; 6807 u16 acl_handle, cis_handle; 6808 struct hci_conn *acl, *cis; 6809 int mask; 6810 __u8 flags = 0; 6811 6812 acl_handle = __le16_to_cpu(ev->acl_handle); 6813 cis_handle = __le16_to_cpu(ev->cis_handle); 6814 6815 bt_dev_dbg(hdev, "acl 0x%4.4x handle 0x%4.4x cig 0x%2.2x cis 0x%2.2x", 6816 acl_handle, cis_handle, ev->cig_id, ev->cis_id); 6817 6818 hci_dev_lock(hdev); 6819 6820 acl = hci_conn_hash_lookup_handle(hdev, acl_handle); 6821 if (!acl) 6822 goto unlock; 6823 6824 mask = hci_proto_connect_ind(hdev, &acl->dst, CIS_LINK, &flags); 6825 if (!(mask & HCI_LM_ACCEPT)) { 6826 hci_le_reject_cis(hdev, ev->cis_handle); 6827 goto unlock; 6828 } 6829 6830 cis = hci_conn_hash_lookup_handle(hdev, cis_handle); 6831 if (!cis) { 6832 cis = hci_conn_add(hdev, CIS_LINK, &acl->dst, 6833 HCI_ROLE_SLAVE, cis_handle); 6834 if (IS_ERR(cis)) { 6835 hci_le_reject_cis(hdev, ev->cis_handle); 6836 goto unlock; 6837 } 6838 } 6839 6840 cis->iso_qos.ucast.cig = ev->cig_id; 6841 cis->iso_qos.ucast.cis = ev->cis_id; 6842 6843 if (!(flags & HCI_PROTO_DEFER)) { 6844 hci_le_accept_cis(hdev, ev->cis_handle); 6845 } else { 6846 cis->state = BT_CONNECT2; 6847 hci_connect_cfm(cis, 0); 6848 } 6849 6850 unlock: 6851 hci_dev_unlock(hdev); 6852 } 6853 6854 static int hci_iso_term_big_sync(struct hci_dev *hdev, void *data) 6855 { 6856 u8 handle = PTR_UINT(data); 6857 6858 return hci_le_terminate_big_sync(hdev, handle, 6859 HCI_ERROR_LOCAL_HOST_TERM); 6860 } 6861 6862 static void hci_le_create_big_complete_evt(struct hci_dev *hdev, void *data, 6863 struct sk_buff *skb) 6864 { 6865 struct hci_evt_le_create_big_complete *ev = data; 6866 struct hci_conn *conn; 6867 __u8 i = 0; 6868 6869 BT_DBG("%s status 0x%2.2x", hdev->name, ev->status); 6870 6871 if (!hci_le_ev_skb_pull(hdev, skb, HCI_EVT_LE_CREATE_BIG_COMPLETE, 6872 flex_array_size(ev, bis_handle, ev->num_bis))) 6873 return; 6874 6875 hci_dev_lock(hdev); 6876 6877 /* Connect all BISes that are bound to the BIG */ 6878 while ((conn = hci_conn_hash_lookup_big_state(hdev, ev->handle, 6879 BT_BOUND))) { 6880 if (ev->status) { 6881 hci_connect_cfm(conn, ev->status); 6882 hci_conn_del(conn); 6883 continue; 6884 } 6885 6886 if (hci_conn_set_handle(conn, 6887 __le16_to_cpu(ev->bis_handle[i++]))) 6888 continue; 6889 6890 conn->state = BT_CONNECTED; 6891 set_bit(HCI_CONN_BIG_CREATED, &conn->flags); 6892 hci_debugfs_create_conn(conn); 6893 hci_conn_add_sysfs(conn); 6894 hci_iso_setup_path(conn); 6895 } 6896 6897 if (!ev->status && !i) 6898 /* If no BISes have been connected for the BIG, 6899 * terminate. This is in case all bound connections 6900 * have been closed before the BIG creation 6901 * has completed. 6902 */ 6903 hci_cmd_sync_queue(hdev, hci_iso_term_big_sync, 6904 UINT_PTR(ev->handle), NULL); 6905 6906 hci_dev_unlock(hdev); 6907 } 6908 6909 static void hci_le_big_sync_established_evt(struct hci_dev *hdev, void *data, 6910 struct sk_buff *skb) 6911 { 6912 struct hci_evt_le_big_sync_estabilished *ev = data; 6913 struct hci_conn *bis, *conn; 6914 int i; 6915 6916 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 6917 6918 if (!hci_le_ev_skb_pull(hdev, skb, HCI_EVT_LE_BIG_SYNC_ESTABLISHED, 6919 flex_array_size(ev, bis, ev->num_bis))) 6920 return; 6921 6922 hci_dev_lock(hdev); 6923 6924 conn = hci_conn_hash_lookup_big_sync_pend(hdev, ev->handle, 6925 ev->num_bis); 6926 if (!conn) { 6927 bt_dev_err(hdev, 6928 "Unable to find connection for big 0x%2.2x", 6929 ev->handle); 6930 goto unlock; 6931 } 6932 6933 clear_bit(HCI_CONN_CREATE_BIG_SYNC, &conn->flags); 6934 6935 conn->num_bis = 0; 6936 memset(conn->bis, 0, sizeof(conn->num_bis)); 6937 6938 for (i = 0; i < ev->num_bis; i++) { 6939 u16 handle = le16_to_cpu(ev->bis[i]); 6940 __le32 interval; 6941 6942 bis = hci_conn_hash_lookup_handle(hdev, handle); 6943 if (!bis) { 6944 if (handle > HCI_CONN_HANDLE_MAX) { 6945 bt_dev_dbg(hdev, "ignore too large handle %u", handle); 6946 continue; 6947 } 6948 bis = hci_conn_add(hdev, BIS_LINK, BDADDR_ANY, 6949 HCI_ROLE_SLAVE, handle); 6950 if (IS_ERR(bis)) 6951 continue; 6952 } 6953 6954 if (ev->status != 0x42) 6955 /* Mark PA sync as established */ 6956 set_bit(HCI_CONN_PA_SYNC, &bis->flags); 6957 6958 bis->sync_handle = conn->sync_handle; 6959 bis->iso_qos.bcast.big = ev->handle; 6960 memset(&interval, 0, sizeof(interval)); 6961 memcpy(&interval, ev->latency, sizeof(ev->latency)); 6962 bis->iso_qos.bcast.in.interval = le32_to_cpu(interval); 6963 /* Convert ISO Interval (1.25 ms slots) to latency (ms) */ 6964 bis->iso_qos.bcast.in.latency = le16_to_cpu(ev->interval) * 125 / 100; 6965 bis->iso_qos.bcast.in.sdu = le16_to_cpu(ev->max_pdu); 6966 6967 if (!ev->status) { 6968 bis->state = BT_CONNECTED; 6969 set_bit(HCI_CONN_BIG_SYNC, &bis->flags); 6970 hci_debugfs_create_conn(bis); 6971 hci_conn_add_sysfs(bis); 6972 hci_iso_setup_path(bis); 6973 } 6974 } 6975 6976 /* In case BIG sync failed, notify each failed connection to 6977 * the user after all hci connections have been added 6978 */ 6979 if (ev->status) 6980 for (i = 0; i < ev->num_bis; i++) { 6981 u16 handle = le16_to_cpu(ev->bis[i]); 6982 6983 bis = hci_conn_hash_lookup_handle(hdev, handle); 6984 if (!bis) 6985 continue; 6986 6987 set_bit(HCI_CONN_BIG_SYNC_FAILED, &bis->flags); 6988 hci_connect_cfm(bis, ev->status); 6989 } 6990 6991 unlock: 6992 hci_dev_unlock(hdev); 6993 } 6994 6995 static void hci_le_big_info_adv_report_evt(struct hci_dev *hdev, void *data, 6996 struct sk_buff *skb) 6997 { 6998 struct hci_evt_le_big_info_adv_report *ev = data; 6999 int mask = hdev->link_mode; 7000 __u8 flags = 0; 7001 struct hci_conn *pa_sync; 7002 7003 bt_dev_dbg(hdev, "sync_handle 0x%4.4x", le16_to_cpu(ev->sync_handle)); 7004 7005 hci_dev_lock(hdev); 7006 7007 mask |= hci_proto_connect_ind(hdev, BDADDR_ANY, BIS_LINK, &flags); 7008 if (!(mask & HCI_LM_ACCEPT)) 7009 goto unlock; 7010 7011 if (!(flags & HCI_PROTO_DEFER)) 7012 goto unlock; 7013 7014 pa_sync = hci_conn_hash_lookup_pa_sync_handle 7015 (hdev, 7016 le16_to_cpu(ev->sync_handle)); 7017 7018 if (!pa_sync) 7019 goto unlock; 7020 7021 pa_sync->iso_qos.bcast.encryption = ev->encryption; 7022 7023 /* Notify iso layer */ 7024 hci_connect_cfm(pa_sync, 0); 7025 7026 unlock: 7027 hci_dev_unlock(hdev); 7028 } 7029 7030 #define HCI_LE_EV_VL(_op, _func, _min_len, _max_len) \ 7031 [_op] = { \ 7032 .func = _func, \ 7033 .min_len = _min_len, \ 7034 .max_len = _max_len, \ 7035 } 7036 7037 #define HCI_LE_EV(_op, _func, _len) \ 7038 HCI_LE_EV_VL(_op, _func, _len, _len) 7039 7040 #define HCI_LE_EV_STATUS(_op, _func) \ 7041 HCI_LE_EV(_op, _func, sizeof(struct hci_ev_status)) 7042 7043 /* Entries in this table shall have their position according to the subevent 7044 * opcode they handle so the use of the macros above is recommend since it does 7045 * attempt to initialize at its proper index using Designated Initializers that 7046 * way events without a callback function can be ommited. 7047 */ 7048 static const struct hci_le_ev { 7049 void (*func)(struct hci_dev *hdev, void *data, struct sk_buff *skb); 7050 u16 min_len; 7051 u16 max_len; 7052 } hci_le_ev_table[U8_MAX + 1] = { 7053 /* [0x01 = HCI_EV_LE_CONN_COMPLETE] */ 7054 HCI_LE_EV(HCI_EV_LE_CONN_COMPLETE, hci_le_conn_complete_evt, 7055 sizeof(struct hci_ev_le_conn_complete)), 7056 /* [0x02 = HCI_EV_LE_ADVERTISING_REPORT] */ 7057 HCI_LE_EV_VL(HCI_EV_LE_ADVERTISING_REPORT, hci_le_adv_report_evt, 7058 sizeof(struct hci_ev_le_advertising_report), 7059 HCI_MAX_EVENT_SIZE), 7060 /* [0x03 = HCI_EV_LE_CONN_UPDATE_COMPLETE] */ 7061 HCI_LE_EV(HCI_EV_LE_CONN_UPDATE_COMPLETE, 7062 hci_le_conn_update_complete_evt, 7063 sizeof(struct hci_ev_le_conn_update_complete)), 7064 /* [0x04 = HCI_EV_LE_REMOTE_FEAT_COMPLETE] */ 7065 HCI_LE_EV(HCI_EV_LE_REMOTE_FEAT_COMPLETE, 7066 hci_le_remote_feat_complete_evt, 7067 sizeof(struct hci_ev_le_remote_feat_complete)), 7068 /* [0x05 = HCI_EV_LE_LTK_REQ] */ 7069 HCI_LE_EV(HCI_EV_LE_LTK_REQ, hci_le_ltk_request_evt, 7070 sizeof(struct hci_ev_le_ltk_req)), 7071 /* [0x06 = HCI_EV_LE_REMOTE_CONN_PARAM_REQ] */ 7072 HCI_LE_EV(HCI_EV_LE_REMOTE_CONN_PARAM_REQ, 7073 hci_le_remote_conn_param_req_evt, 7074 sizeof(struct hci_ev_le_remote_conn_param_req)), 7075 /* [0x0a = HCI_EV_LE_ENHANCED_CONN_COMPLETE] */ 7076 HCI_LE_EV(HCI_EV_LE_ENHANCED_CONN_COMPLETE, 7077 hci_le_enh_conn_complete_evt, 7078 sizeof(struct hci_ev_le_enh_conn_complete)), 7079 /* [0x0b = HCI_EV_LE_DIRECT_ADV_REPORT] */ 7080 HCI_LE_EV_VL(HCI_EV_LE_DIRECT_ADV_REPORT, hci_le_direct_adv_report_evt, 7081 sizeof(struct hci_ev_le_direct_adv_report), 7082 HCI_MAX_EVENT_SIZE), 7083 /* [0x0c = HCI_EV_LE_PHY_UPDATE_COMPLETE] */ 7084 HCI_LE_EV(HCI_EV_LE_PHY_UPDATE_COMPLETE, hci_le_phy_update_evt, 7085 sizeof(struct hci_ev_le_phy_update_complete)), 7086 /* [0x0d = HCI_EV_LE_EXT_ADV_REPORT] */ 7087 HCI_LE_EV_VL(HCI_EV_LE_EXT_ADV_REPORT, hci_le_ext_adv_report_evt, 7088 sizeof(struct hci_ev_le_ext_adv_report), 7089 HCI_MAX_EVENT_SIZE), 7090 /* [0x0e = HCI_EV_LE_PA_SYNC_ESTABLISHED] */ 7091 HCI_LE_EV(HCI_EV_LE_PA_SYNC_ESTABLISHED, 7092 hci_le_pa_sync_estabilished_evt, 7093 sizeof(struct hci_ev_le_pa_sync_established)), 7094 /* [0x0f = HCI_EV_LE_PER_ADV_REPORT] */ 7095 HCI_LE_EV_VL(HCI_EV_LE_PER_ADV_REPORT, 7096 hci_le_per_adv_report_evt, 7097 sizeof(struct hci_ev_le_per_adv_report), 7098 HCI_MAX_EVENT_SIZE), 7099 /* [0x12 = HCI_EV_LE_EXT_ADV_SET_TERM] */ 7100 HCI_LE_EV(HCI_EV_LE_EXT_ADV_SET_TERM, hci_le_ext_adv_term_evt, 7101 sizeof(struct hci_evt_le_ext_adv_set_term)), 7102 /* [0x19 = HCI_EVT_LE_CIS_ESTABLISHED] */ 7103 HCI_LE_EV(HCI_EVT_LE_CIS_ESTABLISHED, hci_le_cis_estabilished_evt, 7104 sizeof(struct hci_evt_le_cis_established)), 7105 /* [0x1a = HCI_EVT_LE_CIS_REQ] */ 7106 HCI_LE_EV(HCI_EVT_LE_CIS_REQ, hci_le_cis_req_evt, 7107 sizeof(struct hci_evt_le_cis_req)), 7108 /* [0x1b = HCI_EVT_LE_CREATE_BIG_COMPLETE] */ 7109 HCI_LE_EV_VL(HCI_EVT_LE_CREATE_BIG_COMPLETE, 7110 hci_le_create_big_complete_evt, 7111 sizeof(struct hci_evt_le_create_big_complete), 7112 HCI_MAX_EVENT_SIZE), 7113 /* [0x1d = HCI_EV_LE_BIG_SYNC_ESTABLISHED] */ 7114 HCI_LE_EV_VL(HCI_EVT_LE_BIG_SYNC_ESTABLISHED, 7115 hci_le_big_sync_established_evt, 7116 sizeof(struct hci_evt_le_big_sync_estabilished), 7117 HCI_MAX_EVENT_SIZE), 7118 /* [0x22 = HCI_EVT_LE_BIG_INFO_ADV_REPORT] */ 7119 HCI_LE_EV_VL(HCI_EVT_LE_BIG_INFO_ADV_REPORT, 7120 hci_le_big_info_adv_report_evt, 7121 sizeof(struct hci_evt_le_big_info_adv_report), 7122 HCI_MAX_EVENT_SIZE), 7123 }; 7124 7125 static void hci_le_meta_evt(struct hci_dev *hdev, void *data, 7126 struct sk_buff *skb, u16 *opcode, u8 *status, 7127 hci_req_complete_t *req_complete, 7128 hci_req_complete_skb_t *req_complete_skb) 7129 { 7130 struct hci_ev_le_meta *ev = data; 7131 const struct hci_le_ev *subev; 7132 7133 bt_dev_dbg(hdev, "subevent 0x%2.2x", ev->subevent); 7134 7135 /* Only match event if command OGF is for LE */ 7136 if (hdev->req_skb && 7137 (hci_opcode_ogf(hci_skb_opcode(hdev->req_skb)) == 0x08 || 7138 hci_skb_opcode(hdev->req_skb) == HCI_OP_NOP) && 7139 hci_skb_event(hdev->req_skb) == ev->subevent) { 7140 *opcode = hci_skb_opcode(hdev->req_skb); 7141 hci_req_cmd_complete(hdev, *opcode, 0x00, req_complete, 7142 req_complete_skb); 7143 } 7144 7145 subev = &hci_le_ev_table[ev->subevent]; 7146 if (!subev->func) 7147 return; 7148 7149 if (skb->len < subev->min_len) { 7150 bt_dev_err(hdev, "unexpected subevent 0x%2.2x length: %u < %u", 7151 ev->subevent, skb->len, subev->min_len); 7152 return; 7153 } 7154 7155 /* Just warn if the length is over max_len size it still be 7156 * possible to partially parse the event so leave to callback to 7157 * decide if that is acceptable. 7158 */ 7159 if (skb->len > subev->max_len) 7160 bt_dev_warn(hdev, "unexpected subevent 0x%2.2x length: %u > %u", 7161 ev->subevent, skb->len, subev->max_len); 7162 data = hci_le_ev_skb_pull(hdev, skb, ev->subevent, subev->min_len); 7163 if (!data) 7164 return; 7165 7166 subev->func(hdev, data, skb); 7167 } 7168 7169 static bool hci_get_cmd_complete(struct hci_dev *hdev, u16 opcode, 7170 u8 event, struct sk_buff *skb) 7171 { 7172 struct hci_ev_cmd_complete *ev; 7173 struct hci_event_hdr *hdr; 7174 7175 if (!skb) 7176 return false; 7177 7178 hdr = hci_ev_skb_pull(hdev, skb, event, sizeof(*hdr)); 7179 if (!hdr) 7180 return false; 7181 7182 if (event) { 7183 if (hdr->evt != event) 7184 return false; 7185 return true; 7186 } 7187 7188 /* Check if request ended in Command Status - no way to retrieve 7189 * any extra parameters in this case. 7190 */ 7191 if (hdr->evt == HCI_EV_CMD_STATUS) 7192 return false; 7193 7194 if (hdr->evt != HCI_EV_CMD_COMPLETE) { 7195 bt_dev_err(hdev, "last event is not cmd complete (0x%2.2x)", 7196 hdr->evt); 7197 return false; 7198 } 7199 7200 ev = hci_cc_skb_pull(hdev, skb, opcode, sizeof(*ev)); 7201 if (!ev) 7202 return false; 7203 7204 if (opcode != __le16_to_cpu(ev->opcode)) { 7205 BT_DBG("opcode doesn't match (0x%2.2x != 0x%2.2x)", opcode, 7206 __le16_to_cpu(ev->opcode)); 7207 return false; 7208 } 7209 7210 return true; 7211 } 7212 7213 static void hci_store_wake_reason(struct hci_dev *hdev, u8 event, 7214 struct sk_buff *skb) 7215 { 7216 struct hci_ev_le_advertising_info *adv; 7217 struct hci_ev_le_direct_adv_info *direct_adv; 7218 struct hci_ev_le_ext_adv_info *ext_adv; 7219 const struct hci_ev_conn_complete *conn_complete = (void *)skb->data; 7220 const struct hci_ev_conn_request *conn_request = (void *)skb->data; 7221 7222 hci_dev_lock(hdev); 7223 7224 /* If we are currently suspended and this is the first BT event seen, 7225 * save the wake reason associated with the event. 7226 */ 7227 if (!hdev->suspended || hdev->wake_reason) 7228 goto unlock; 7229 7230 /* Default to remote wake. Values for wake_reason are documented in the 7231 * Bluez mgmt api docs. 7232 */ 7233 hdev->wake_reason = MGMT_WAKE_REASON_REMOTE_WAKE; 7234 7235 /* Once configured for remote wakeup, we should only wake up for 7236 * reconnections. It's useful to see which device is waking us up so 7237 * keep track of the bdaddr of the connection event that woke us up. 7238 */ 7239 if (event == HCI_EV_CONN_REQUEST) { 7240 bacpy(&hdev->wake_addr, &conn_request->bdaddr); 7241 hdev->wake_addr_type = BDADDR_BREDR; 7242 } else if (event == HCI_EV_CONN_COMPLETE) { 7243 bacpy(&hdev->wake_addr, &conn_complete->bdaddr); 7244 hdev->wake_addr_type = BDADDR_BREDR; 7245 } else if (event == HCI_EV_LE_META) { 7246 struct hci_ev_le_meta *le_ev = (void *)skb->data; 7247 u8 subevent = le_ev->subevent; 7248 u8 *ptr = &skb->data[sizeof(*le_ev)]; 7249 u8 num_reports = *ptr; 7250 7251 if ((subevent == HCI_EV_LE_ADVERTISING_REPORT || 7252 subevent == HCI_EV_LE_DIRECT_ADV_REPORT || 7253 subevent == HCI_EV_LE_EXT_ADV_REPORT) && 7254 num_reports) { 7255 adv = (void *)(ptr + 1); 7256 direct_adv = (void *)(ptr + 1); 7257 ext_adv = (void *)(ptr + 1); 7258 7259 switch (subevent) { 7260 case HCI_EV_LE_ADVERTISING_REPORT: 7261 bacpy(&hdev->wake_addr, &adv->bdaddr); 7262 hdev->wake_addr_type = adv->bdaddr_type; 7263 break; 7264 case HCI_EV_LE_DIRECT_ADV_REPORT: 7265 bacpy(&hdev->wake_addr, &direct_adv->bdaddr); 7266 hdev->wake_addr_type = direct_adv->bdaddr_type; 7267 break; 7268 case HCI_EV_LE_EXT_ADV_REPORT: 7269 bacpy(&hdev->wake_addr, &ext_adv->bdaddr); 7270 hdev->wake_addr_type = ext_adv->bdaddr_type; 7271 break; 7272 } 7273 } 7274 } else { 7275 hdev->wake_reason = MGMT_WAKE_REASON_UNEXPECTED; 7276 } 7277 7278 unlock: 7279 hci_dev_unlock(hdev); 7280 } 7281 7282 #define HCI_EV_VL(_op, _func, _min_len, _max_len) \ 7283 [_op] = { \ 7284 .req = false, \ 7285 .func = _func, \ 7286 .min_len = _min_len, \ 7287 .max_len = _max_len, \ 7288 } 7289 7290 #define HCI_EV(_op, _func, _len) \ 7291 HCI_EV_VL(_op, _func, _len, _len) 7292 7293 #define HCI_EV_STATUS(_op, _func) \ 7294 HCI_EV(_op, _func, sizeof(struct hci_ev_status)) 7295 7296 #define HCI_EV_REQ_VL(_op, _func, _min_len, _max_len) \ 7297 [_op] = { \ 7298 .req = true, \ 7299 .func_req = _func, \ 7300 .min_len = _min_len, \ 7301 .max_len = _max_len, \ 7302 } 7303 7304 #define HCI_EV_REQ(_op, _func, _len) \ 7305 HCI_EV_REQ_VL(_op, _func, _len, _len) 7306 7307 /* Entries in this table shall have their position according to the event opcode 7308 * they handle so the use of the macros above is recommend since it does attempt 7309 * to initialize at its proper index using Designated Initializers that way 7310 * events without a callback function don't have entered. 7311 */ 7312 static const struct hci_ev { 7313 bool req; 7314 union { 7315 void (*func)(struct hci_dev *hdev, void *data, 7316 struct sk_buff *skb); 7317 void (*func_req)(struct hci_dev *hdev, void *data, 7318 struct sk_buff *skb, u16 *opcode, u8 *status, 7319 hci_req_complete_t *req_complete, 7320 hci_req_complete_skb_t *req_complete_skb); 7321 }; 7322 u16 min_len; 7323 u16 max_len; 7324 } hci_ev_table[U8_MAX + 1] = { 7325 /* [0x01 = HCI_EV_INQUIRY_COMPLETE] */ 7326 HCI_EV_STATUS(HCI_EV_INQUIRY_COMPLETE, hci_inquiry_complete_evt), 7327 /* [0x02 = HCI_EV_INQUIRY_RESULT] */ 7328 HCI_EV_VL(HCI_EV_INQUIRY_RESULT, hci_inquiry_result_evt, 7329 sizeof(struct hci_ev_inquiry_result), HCI_MAX_EVENT_SIZE), 7330 /* [0x03 = HCI_EV_CONN_COMPLETE] */ 7331 HCI_EV(HCI_EV_CONN_COMPLETE, hci_conn_complete_evt, 7332 sizeof(struct hci_ev_conn_complete)), 7333 /* [0x04 = HCI_EV_CONN_REQUEST] */ 7334 HCI_EV(HCI_EV_CONN_REQUEST, hci_conn_request_evt, 7335 sizeof(struct hci_ev_conn_request)), 7336 /* [0x05 = HCI_EV_DISCONN_COMPLETE] */ 7337 HCI_EV(HCI_EV_DISCONN_COMPLETE, hci_disconn_complete_evt, 7338 sizeof(struct hci_ev_disconn_complete)), 7339 /* [0x06 = HCI_EV_AUTH_COMPLETE] */ 7340 HCI_EV(HCI_EV_AUTH_COMPLETE, hci_auth_complete_evt, 7341 sizeof(struct hci_ev_auth_complete)), 7342 /* [0x07 = HCI_EV_REMOTE_NAME] */ 7343 HCI_EV(HCI_EV_REMOTE_NAME, hci_remote_name_evt, 7344 sizeof(struct hci_ev_remote_name)), 7345 /* [0x08 = HCI_EV_ENCRYPT_CHANGE] */ 7346 HCI_EV(HCI_EV_ENCRYPT_CHANGE, hci_encrypt_change_evt, 7347 sizeof(struct hci_ev_encrypt_change)), 7348 /* [0x09 = HCI_EV_CHANGE_LINK_KEY_COMPLETE] */ 7349 HCI_EV(HCI_EV_CHANGE_LINK_KEY_COMPLETE, 7350 hci_change_link_key_complete_evt, 7351 sizeof(struct hci_ev_change_link_key_complete)), 7352 /* [0x0b = HCI_EV_REMOTE_FEATURES] */ 7353 HCI_EV(HCI_EV_REMOTE_FEATURES, hci_remote_features_evt, 7354 sizeof(struct hci_ev_remote_features)), 7355 /* [0x0e = HCI_EV_CMD_COMPLETE] */ 7356 HCI_EV_REQ_VL(HCI_EV_CMD_COMPLETE, hci_cmd_complete_evt, 7357 sizeof(struct hci_ev_cmd_complete), HCI_MAX_EVENT_SIZE), 7358 /* [0x0f = HCI_EV_CMD_STATUS] */ 7359 HCI_EV_REQ(HCI_EV_CMD_STATUS, hci_cmd_status_evt, 7360 sizeof(struct hci_ev_cmd_status)), 7361 /* [0x10 = HCI_EV_CMD_STATUS] */ 7362 HCI_EV(HCI_EV_HARDWARE_ERROR, hci_hardware_error_evt, 7363 sizeof(struct hci_ev_hardware_error)), 7364 /* [0x12 = HCI_EV_ROLE_CHANGE] */ 7365 HCI_EV(HCI_EV_ROLE_CHANGE, hci_role_change_evt, 7366 sizeof(struct hci_ev_role_change)), 7367 /* [0x13 = HCI_EV_NUM_COMP_PKTS] */ 7368 HCI_EV_VL(HCI_EV_NUM_COMP_PKTS, hci_num_comp_pkts_evt, 7369 sizeof(struct hci_ev_num_comp_pkts), HCI_MAX_EVENT_SIZE), 7370 /* [0x14 = HCI_EV_MODE_CHANGE] */ 7371 HCI_EV(HCI_EV_MODE_CHANGE, hci_mode_change_evt, 7372 sizeof(struct hci_ev_mode_change)), 7373 /* [0x16 = HCI_EV_PIN_CODE_REQ] */ 7374 HCI_EV(HCI_EV_PIN_CODE_REQ, hci_pin_code_request_evt, 7375 sizeof(struct hci_ev_pin_code_req)), 7376 /* [0x17 = HCI_EV_LINK_KEY_REQ] */ 7377 HCI_EV(HCI_EV_LINK_KEY_REQ, hci_link_key_request_evt, 7378 sizeof(struct hci_ev_link_key_req)), 7379 /* [0x18 = HCI_EV_LINK_KEY_NOTIFY] */ 7380 HCI_EV(HCI_EV_LINK_KEY_NOTIFY, hci_link_key_notify_evt, 7381 sizeof(struct hci_ev_link_key_notify)), 7382 /* [0x1c = HCI_EV_CLOCK_OFFSET] */ 7383 HCI_EV(HCI_EV_CLOCK_OFFSET, hci_clock_offset_evt, 7384 sizeof(struct hci_ev_clock_offset)), 7385 /* [0x1d = HCI_EV_PKT_TYPE_CHANGE] */ 7386 HCI_EV(HCI_EV_PKT_TYPE_CHANGE, hci_pkt_type_change_evt, 7387 sizeof(struct hci_ev_pkt_type_change)), 7388 /* [0x20 = HCI_EV_PSCAN_REP_MODE] */ 7389 HCI_EV(HCI_EV_PSCAN_REP_MODE, hci_pscan_rep_mode_evt, 7390 sizeof(struct hci_ev_pscan_rep_mode)), 7391 /* [0x22 = HCI_EV_INQUIRY_RESULT_WITH_RSSI] */ 7392 HCI_EV_VL(HCI_EV_INQUIRY_RESULT_WITH_RSSI, 7393 hci_inquiry_result_with_rssi_evt, 7394 sizeof(struct hci_ev_inquiry_result_rssi), 7395 HCI_MAX_EVENT_SIZE), 7396 /* [0x23 = HCI_EV_REMOTE_EXT_FEATURES] */ 7397 HCI_EV(HCI_EV_REMOTE_EXT_FEATURES, hci_remote_ext_features_evt, 7398 sizeof(struct hci_ev_remote_ext_features)), 7399 /* [0x2c = HCI_EV_SYNC_CONN_COMPLETE] */ 7400 HCI_EV(HCI_EV_SYNC_CONN_COMPLETE, hci_sync_conn_complete_evt, 7401 sizeof(struct hci_ev_sync_conn_complete)), 7402 /* [0x2d = HCI_EV_EXTENDED_INQUIRY_RESULT] */ 7403 HCI_EV_VL(HCI_EV_EXTENDED_INQUIRY_RESULT, 7404 hci_extended_inquiry_result_evt, 7405 sizeof(struct hci_ev_ext_inquiry_result), HCI_MAX_EVENT_SIZE), 7406 /* [0x30 = HCI_EV_KEY_REFRESH_COMPLETE] */ 7407 HCI_EV(HCI_EV_KEY_REFRESH_COMPLETE, hci_key_refresh_complete_evt, 7408 sizeof(struct hci_ev_key_refresh_complete)), 7409 /* [0x31 = HCI_EV_IO_CAPA_REQUEST] */ 7410 HCI_EV(HCI_EV_IO_CAPA_REQUEST, hci_io_capa_request_evt, 7411 sizeof(struct hci_ev_io_capa_request)), 7412 /* [0x32 = HCI_EV_IO_CAPA_REPLY] */ 7413 HCI_EV(HCI_EV_IO_CAPA_REPLY, hci_io_capa_reply_evt, 7414 sizeof(struct hci_ev_io_capa_reply)), 7415 /* [0x33 = HCI_EV_USER_CONFIRM_REQUEST] */ 7416 HCI_EV(HCI_EV_USER_CONFIRM_REQUEST, hci_user_confirm_request_evt, 7417 sizeof(struct hci_ev_user_confirm_req)), 7418 /* [0x34 = HCI_EV_USER_PASSKEY_REQUEST] */ 7419 HCI_EV(HCI_EV_USER_PASSKEY_REQUEST, hci_user_passkey_request_evt, 7420 sizeof(struct hci_ev_user_passkey_req)), 7421 /* [0x35 = HCI_EV_REMOTE_OOB_DATA_REQUEST] */ 7422 HCI_EV(HCI_EV_REMOTE_OOB_DATA_REQUEST, hci_remote_oob_data_request_evt, 7423 sizeof(struct hci_ev_remote_oob_data_request)), 7424 /* [0x36 = HCI_EV_SIMPLE_PAIR_COMPLETE] */ 7425 HCI_EV(HCI_EV_SIMPLE_PAIR_COMPLETE, hci_simple_pair_complete_evt, 7426 sizeof(struct hci_ev_simple_pair_complete)), 7427 /* [0x3b = HCI_EV_USER_PASSKEY_NOTIFY] */ 7428 HCI_EV(HCI_EV_USER_PASSKEY_NOTIFY, hci_user_passkey_notify_evt, 7429 sizeof(struct hci_ev_user_passkey_notify)), 7430 /* [0x3c = HCI_EV_KEYPRESS_NOTIFY] */ 7431 HCI_EV(HCI_EV_KEYPRESS_NOTIFY, hci_keypress_notify_evt, 7432 sizeof(struct hci_ev_keypress_notify)), 7433 /* [0x3d = HCI_EV_REMOTE_HOST_FEATURES] */ 7434 HCI_EV(HCI_EV_REMOTE_HOST_FEATURES, hci_remote_host_features_evt, 7435 sizeof(struct hci_ev_remote_host_features)), 7436 /* [0x3e = HCI_EV_LE_META] */ 7437 HCI_EV_REQ_VL(HCI_EV_LE_META, hci_le_meta_evt, 7438 sizeof(struct hci_ev_le_meta), HCI_MAX_EVENT_SIZE), 7439 /* [0xff = HCI_EV_VENDOR] */ 7440 HCI_EV_VL(HCI_EV_VENDOR, msft_vendor_evt, 0, HCI_MAX_EVENT_SIZE), 7441 }; 7442 7443 static void hci_event_func(struct hci_dev *hdev, u8 event, struct sk_buff *skb, 7444 u16 *opcode, u8 *status, 7445 hci_req_complete_t *req_complete, 7446 hci_req_complete_skb_t *req_complete_skb) 7447 { 7448 const struct hci_ev *ev = &hci_ev_table[event]; 7449 void *data; 7450 7451 if (!ev->func) 7452 return; 7453 7454 if (skb->len < ev->min_len) { 7455 bt_dev_err(hdev, "unexpected event 0x%2.2x length: %u < %u", 7456 event, skb->len, ev->min_len); 7457 return; 7458 } 7459 7460 /* Just warn if the length is over max_len size it still be 7461 * possible to partially parse the event so leave to callback to 7462 * decide if that is acceptable. 7463 */ 7464 if (skb->len > ev->max_len) 7465 bt_dev_warn_ratelimited(hdev, 7466 "unexpected event 0x%2.2x length: %u > %u", 7467 event, skb->len, ev->max_len); 7468 7469 data = hci_ev_skb_pull(hdev, skb, event, ev->min_len); 7470 if (!data) 7471 return; 7472 7473 if (ev->req) 7474 ev->func_req(hdev, data, skb, opcode, status, req_complete, 7475 req_complete_skb); 7476 else 7477 ev->func(hdev, data, skb); 7478 } 7479 7480 void hci_event_packet(struct hci_dev *hdev, struct sk_buff *skb) 7481 { 7482 struct hci_event_hdr *hdr = (void *) skb->data; 7483 hci_req_complete_t req_complete = NULL; 7484 hci_req_complete_skb_t req_complete_skb = NULL; 7485 struct sk_buff *orig_skb = NULL; 7486 u8 status = 0, event, req_evt = 0; 7487 u16 opcode = HCI_OP_NOP; 7488 7489 if (skb->len < sizeof(*hdr)) { 7490 bt_dev_err(hdev, "Malformed HCI Event"); 7491 goto done; 7492 } 7493 7494 hci_dev_lock(hdev); 7495 kfree_skb(hdev->recv_event); 7496 hdev->recv_event = skb_clone(skb, GFP_KERNEL); 7497 hci_dev_unlock(hdev); 7498 7499 event = hdr->evt; 7500 if (!event) { 7501 bt_dev_warn(hdev, "Received unexpected HCI Event 0x%2.2x", 7502 event); 7503 goto done; 7504 } 7505 7506 /* Only match event if command OGF is not for LE */ 7507 if (hdev->req_skb && 7508 hci_opcode_ogf(hci_skb_opcode(hdev->req_skb)) != 0x08 && 7509 hci_skb_event(hdev->req_skb) == event) { 7510 hci_req_cmd_complete(hdev, hci_skb_opcode(hdev->req_skb), 7511 status, &req_complete, &req_complete_skb); 7512 req_evt = event; 7513 } 7514 7515 /* If it looks like we might end up having to call 7516 * req_complete_skb, store a pristine copy of the skb since the 7517 * various handlers may modify the original one through 7518 * skb_pull() calls, etc. 7519 */ 7520 if (req_complete_skb || event == HCI_EV_CMD_STATUS || 7521 event == HCI_EV_CMD_COMPLETE) 7522 orig_skb = skb_clone(skb, GFP_KERNEL); 7523 7524 skb_pull(skb, HCI_EVENT_HDR_SIZE); 7525 7526 /* Store wake reason if we're suspended */ 7527 hci_store_wake_reason(hdev, event, skb); 7528 7529 bt_dev_dbg(hdev, "event 0x%2.2x", event); 7530 7531 hci_event_func(hdev, event, skb, &opcode, &status, &req_complete, 7532 &req_complete_skb); 7533 7534 if (req_complete) { 7535 req_complete(hdev, status, opcode); 7536 } else if (req_complete_skb) { 7537 if (!hci_get_cmd_complete(hdev, opcode, req_evt, orig_skb)) { 7538 kfree_skb(orig_skb); 7539 orig_skb = NULL; 7540 } 7541 req_complete_skb(hdev, status, opcode, orig_skb); 7542 } 7543 7544 done: 7545 kfree_skb(orig_skb); 7546 kfree_skb(skb); 7547 hdev->stat.evt_rx++; 7548 } 7549