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 conn->enc_key_size = rp->key_size; 743 status = 0; 744 745 if (conn->enc_key_size < hdev->min_enc_key_size) { 746 /* As slave role, the conn->state has been set to 747 * BT_CONNECTED and l2cap conn req might not be received 748 * yet, at this moment the l2cap layer almost does 749 * nothing with the non-zero status. 750 * So we also clear encrypt related bits, and then the 751 * handler of l2cap conn req will get the right secure 752 * state at a later time. 753 */ 754 status = HCI_ERROR_AUTH_FAILURE; 755 clear_bit(HCI_CONN_ENCRYPT, &conn->flags); 756 clear_bit(HCI_CONN_AES_CCM, &conn->flags); 757 } 758 } 759 760 hci_encrypt_cfm(conn, status); 761 762 done: 763 hci_dev_unlock(hdev); 764 765 return status; 766 } 767 768 static u8 hci_cc_read_local_commands(struct hci_dev *hdev, void *data, 769 struct sk_buff *skb) 770 { 771 struct hci_rp_read_local_commands *rp = data; 772 773 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 774 775 if (rp->status) 776 return rp->status; 777 778 if (hci_dev_test_flag(hdev, HCI_SETUP) || 779 hci_dev_test_flag(hdev, HCI_CONFIG)) 780 memcpy(hdev->commands, rp->commands, sizeof(hdev->commands)); 781 782 return rp->status; 783 } 784 785 static u8 hci_cc_read_auth_payload_timeout(struct hci_dev *hdev, void *data, 786 struct sk_buff *skb) 787 { 788 struct hci_rp_read_auth_payload_to *rp = data; 789 struct hci_conn *conn; 790 791 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 792 793 if (rp->status) 794 return rp->status; 795 796 hci_dev_lock(hdev); 797 798 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(rp->handle)); 799 if (conn) 800 conn->auth_payload_timeout = __le16_to_cpu(rp->timeout); 801 802 hci_dev_unlock(hdev); 803 804 return rp->status; 805 } 806 807 static u8 hci_cc_write_auth_payload_timeout(struct hci_dev *hdev, void *data, 808 struct sk_buff *skb) 809 { 810 struct hci_rp_write_auth_payload_to *rp = data; 811 struct hci_conn *conn; 812 void *sent; 813 814 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 815 816 sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_AUTH_PAYLOAD_TO); 817 if (!sent) 818 return rp->status; 819 820 hci_dev_lock(hdev); 821 822 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(rp->handle)); 823 if (!conn) { 824 rp->status = 0xff; 825 goto unlock; 826 } 827 828 if (!rp->status) 829 conn->auth_payload_timeout = get_unaligned_le16(sent + 2); 830 831 unlock: 832 hci_dev_unlock(hdev); 833 834 return rp->status; 835 } 836 837 static u8 hci_cc_read_local_features(struct hci_dev *hdev, void *data, 838 struct sk_buff *skb) 839 { 840 struct hci_rp_read_local_features *rp = data; 841 842 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 843 844 if (rp->status) 845 return rp->status; 846 847 memcpy(hdev->features, rp->features, 8); 848 849 /* Adjust default settings according to features 850 * supported by device. */ 851 852 if (hdev->features[0][0] & LMP_3SLOT) 853 hdev->pkt_type |= (HCI_DM3 | HCI_DH3); 854 855 if (hdev->features[0][0] & LMP_5SLOT) 856 hdev->pkt_type |= (HCI_DM5 | HCI_DH5); 857 858 if (hdev->features[0][1] & LMP_HV2) { 859 hdev->pkt_type |= (HCI_HV2); 860 hdev->esco_type |= (ESCO_HV2); 861 } 862 863 if (hdev->features[0][1] & LMP_HV3) { 864 hdev->pkt_type |= (HCI_HV3); 865 hdev->esco_type |= (ESCO_HV3); 866 } 867 868 if (lmp_esco_capable(hdev)) 869 hdev->esco_type |= (ESCO_EV3); 870 871 if (hdev->features[0][4] & LMP_EV4) 872 hdev->esco_type |= (ESCO_EV4); 873 874 if (hdev->features[0][4] & LMP_EV5) 875 hdev->esco_type |= (ESCO_EV5); 876 877 if (hdev->features[0][5] & LMP_EDR_ESCO_2M) 878 hdev->esco_type |= (ESCO_2EV3); 879 880 if (hdev->features[0][5] & LMP_EDR_ESCO_3M) 881 hdev->esco_type |= (ESCO_3EV3); 882 883 if (hdev->features[0][5] & LMP_EDR_3S_ESCO) 884 hdev->esco_type |= (ESCO_2EV5 | ESCO_3EV5); 885 886 return rp->status; 887 } 888 889 static u8 hci_cc_read_local_ext_features(struct hci_dev *hdev, void *data, 890 struct sk_buff *skb) 891 { 892 struct hci_rp_read_local_ext_features *rp = data; 893 894 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 895 896 if (rp->status) 897 return rp->status; 898 899 if (hdev->max_page < rp->max_page) { 900 if (test_bit(HCI_QUIRK_BROKEN_LOCAL_EXT_FEATURES_PAGE_2, 901 &hdev->quirks)) 902 bt_dev_warn(hdev, "broken local ext features page 2"); 903 else 904 hdev->max_page = rp->max_page; 905 } 906 907 if (rp->page < HCI_MAX_PAGES) 908 memcpy(hdev->features[rp->page], rp->features, 8); 909 910 return rp->status; 911 } 912 913 static u8 hci_cc_read_buffer_size(struct hci_dev *hdev, void *data, 914 struct sk_buff *skb) 915 { 916 struct hci_rp_read_buffer_size *rp = data; 917 918 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 919 920 if (rp->status) 921 return rp->status; 922 923 hdev->acl_mtu = __le16_to_cpu(rp->acl_mtu); 924 hdev->sco_mtu = rp->sco_mtu; 925 hdev->acl_pkts = __le16_to_cpu(rp->acl_max_pkt); 926 hdev->sco_pkts = __le16_to_cpu(rp->sco_max_pkt); 927 928 if (test_bit(HCI_QUIRK_FIXUP_BUFFER_SIZE, &hdev->quirks)) { 929 hdev->sco_mtu = 64; 930 hdev->sco_pkts = 8; 931 } 932 933 if (!read_voice_setting_capable(hdev)) 934 hdev->sco_pkts = 0; 935 936 hdev->acl_cnt = hdev->acl_pkts; 937 hdev->sco_cnt = hdev->sco_pkts; 938 939 BT_DBG("%s acl mtu %d:%d sco mtu %d:%d", hdev->name, hdev->acl_mtu, 940 hdev->acl_pkts, hdev->sco_mtu, hdev->sco_pkts); 941 942 if (!hdev->acl_mtu || !hdev->acl_pkts) 943 return HCI_ERROR_INVALID_PARAMETERS; 944 945 return rp->status; 946 } 947 948 static u8 hci_cc_read_bd_addr(struct hci_dev *hdev, void *data, 949 struct sk_buff *skb) 950 { 951 struct hci_rp_read_bd_addr *rp = data; 952 953 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 954 955 if (rp->status) 956 return rp->status; 957 958 if (test_bit(HCI_INIT, &hdev->flags)) 959 bacpy(&hdev->bdaddr, &rp->bdaddr); 960 961 if (hci_dev_test_flag(hdev, HCI_SETUP)) 962 bacpy(&hdev->setup_addr, &rp->bdaddr); 963 964 return rp->status; 965 } 966 967 static u8 hci_cc_read_local_pairing_opts(struct hci_dev *hdev, void *data, 968 struct sk_buff *skb) 969 { 970 struct hci_rp_read_local_pairing_opts *rp = data; 971 972 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 973 974 if (rp->status) 975 return rp->status; 976 977 if (hci_dev_test_flag(hdev, HCI_SETUP) || 978 hci_dev_test_flag(hdev, HCI_CONFIG)) { 979 hdev->pairing_opts = rp->pairing_opts; 980 hdev->max_enc_key_size = rp->max_key_size; 981 } 982 983 return rp->status; 984 } 985 986 static u8 hci_cc_read_page_scan_activity(struct hci_dev *hdev, void *data, 987 struct sk_buff *skb) 988 { 989 struct hci_rp_read_page_scan_activity *rp = data; 990 991 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 992 993 if (rp->status) 994 return rp->status; 995 996 if (test_bit(HCI_INIT, &hdev->flags)) { 997 hdev->page_scan_interval = __le16_to_cpu(rp->interval); 998 hdev->page_scan_window = __le16_to_cpu(rp->window); 999 } 1000 1001 return rp->status; 1002 } 1003 1004 static u8 hci_cc_write_page_scan_activity(struct hci_dev *hdev, void *data, 1005 struct sk_buff *skb) 1006 { 1007 struct hci_ev_status *rp = data; 1008 struct hci_cp_write_page_scan_activity *sent; 1009 1010 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1011 1012 if (rp->status) 1013 return rp->status; 1014 1015 sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_PAGE_SCAN_ACTIVITY); 1016 if (!sent) 1017 return rp->status; 1018 1019 hdev->page_scan_interval = __le16_to_cpu(sent->interval); 1020 hdev->page_scan_window = __le16_to_cpu(sent->window); 1021 1022 return rp->status; 1023 } 1024 1025 static u8 hci_cc_read_page_scan_type(struct hci_dev *hdev, void *data, 1026 struct sk_buff *skb) 1027 { 1028 struct hci_rp_read_page_scan_type *rp = data; 1029 1030 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1031 1032 if (rp->status) 1033 return rp->status; 1034 1035 if (test_bit(HCI_INIT, &hdev->flags)) 1036 hdev->page_scan_type = rp->type; 1037 1038 return rp->status; 1039 } 1040 1041 static u8 hci_cc_write_page_scan_type(struct hci_dev *hdev, void *data, 1042 struct sk_buff *skb) 1043 { 1044 struct hci_ev_status *rp = data; 1045 u8 *type; 1046 1047 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1048 1049 if (rp->status) 1050 return rp->status; 1051 1052 type = hci_sent_cmd_data(hdev, HCI_OP_WRITE_PAGE_SCAN_TYPE); 1053 if (type) 1054 hdev->page_scan_type = *type; 1055 1056 return rp->status; 1057 } 1058 1059 static u8 hci_cc_read_clock(struct hci_dev *hdev, void *data, 1060 struct sk_buff *skb) 1061 { 1062 struct hci_rp_read_clock *rp = data; 1063 struct hci_cp_read_clock *cp; 1064 struct hci_conn *conn; 1065 1066 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1067 1068 if (rp->status) 1069 return rp->status; 1070 1071 hci_dev_lock(hdev); 1072 1073 cp = hci_sent_cmd_data(hdev, HCI_OP_READ_CLOCK); 1074 if (!cp) 1075 goto unlock; 1076 1077 if (cp->which == 0x00) { 1078 hdev->clock = le32_to_cpu(rp->clock); 1079 goto unlock; 1080 } 1081 1082 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(rp->handle)); 1083 if (conn) { 1084 conn->clock = le32_to_cpu(rp->clock); 1085 conn->clock_accuracy = le16_to_cpu(rp->accuracy); 1086 } 1087 1088 unlock: 1089 hci_dev_unlock(hdev); 1090 return rp->status; 1091 } 1092 1093 static u8 hci_cc_read_inq_rsp_tx_power(struct hci_dev *hdev, void *data, 1094 struct sk_buff *skb) 1095 { 1096 struct hci_rp_read_inq_rsp_tx_power *rp = data; 1097 1098 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1099 1100 if (rp->status) 1101 return rp->status; 1102 1103 hdev->inq_tx_power = rp->tx_power; 1104 1105 return rp->status; 1106 } 1107 1108 static u8 hci_cc_read_def_err_data_reporting(struct hci_dev *hdev, void *data, 1109 struct sk_buff *skb) 1110 { 1111 struct hci_rp_read_def_err_data_reporting *rp = data; 1112 1113 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1114 1115 if (rp->status) 1116 return rp->status; 1117 1118 hdev->err_data_reporting = rp->err_data_reporting; 1119 1120 return rp->status; 1121 } 1122 1123 static u8 hci_cc_write_def_err_data_reporting(struct hci_dev *hdev, void *data, 1124 struct sk_buff *skb) 1125 { 1126 struct hci_ev_status *rp = data; 1127 struct hci_cp_write_def_err_data_reporting *cp; 1128 1129 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1130 1131 if (rp->status) 1132 return rp->status; 1133 1134 cp = hci_sent_cmd_data(hdev, HCI_OP_WRITE_DEF_ERR_DATA_REPORTING); 1135 if (!cp) 1136 return rp->status; 1137 1138 hdev->err_data_reporting = cp->err_data_reporting; 1139 1140 return rp->status; 1141 } 1142 1143 static u8 hci_cc_pin_code_reply(struct hci_dev *hdev, void *data, 1144 struct sk_buff *skb) 1145 { 1146 struct hci_rp_pin_code_reply *rp = data; 1147 struct hci_cp_pin_code_reply *cp; 1148 struct hci_conn *conn; 1149 1150 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1151 1152 hci_dev_lock(hdev); 1153 1154 if (hci_dev_test_flag(hdev, HCI_MGMT)) 1155 mgmt_pin_code_reply_complete(hdev, &rp->bdaddr, rp->status); 1156 1157 if (rp->status) 1158 goto unlock; 1159 1160 cp = hci_sent_cmd_data(hdev, HCI_OP_PIN_CODE_REPLY); 1161 if (!cp) 1162 goto unlock; 1163 1164 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &cp->bdaddr); 1165 if (conn) 1166 conn->pin_length = cp->pin_len; 1167 1168 unlock: 1169 hci_dev_unlock(hdev); 1170 return rp->status; 1171 } 1172 1173 static u8 hci_cc_pin_code_neg_reply(struct hci_dev *hdev, void *data, 1174 struct sk_buff *skb) 1175 { 1176 struct hci_rp_pin_code_neg_reply *rp = data; 1177 1178 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1179 1180 hci_dev_lock(hdev); 1181 1182 if (hci_dev_test_flag(hdev, HCI_MGMT)) 1183 mgmt_pin_code_neg_reply_complete(hdev, &rp->bdaddr, 1184 rp->status); 1185 1186 hci_dev_unlock(hdev); 1187 1188 return rp->status; 1189 } 1190 1191 static u8 hci_cc_le_read_buffer_size(struct hci_dev *hdev, void *data, 1192 struct sk_buff *skb) 1193 { 1194 struct hci_rp_le_read_buffer_size *rp = data; 1195 1196 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1197 1198 if (rp->status) 1199 return rp->status; 1200 1201 hdev->le_mtu = __le16_to_cpu(rp->le_mtu); 1202 hdev->le_pkts = rp->le_max_pkt; 1203 1204 hdev->le_cnt = hdev->le_pkts; 1205 1206 BT_DBG("%s le mtu %d:%d", hdev->name, hdev->le_mtu, hdev->le_pkts); 1207 1208 if (hdev->le_mtu && hdev->le_mtu < HCI_MIN_LE_MTU) 1209 return HCI_ERROR_INVALID_PARAMETERS; 1210 1211 return rp->status; 1212 } 1213 1214 static u8 hci_cc_le_read_local_features(struct hci_dev *hdev, void *data, 1215 struct sk_buff *skb) 1216 { 1217 struct hci_rp_le_read_local_features *rp = data; 1218 1219 BT_DBG("%s status 0x%2.2x", hdev->name, rp->status); 1220 1221 if (rp->status) 1222 return rp->status; 1223 1224 memcpy(hdev->le_features, rp->features, 8); 1225 1226 return rp->status; 1227 } 1228 1229 static u8 hci_cc_le_read_adv_tx_power(struct hci_dev *hdev, void *data, 1230 struct sk_buff *skb) 1231 { 1232 struct hci_rp_le_read_adv_tx_power *rp = data; 1233 1234 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1235 1236 if (rp->status) 1237 return rp->status; 1238 1239 hdev->adv_tx_power = rp->tx_power; 1240 1241 return rp->status; 1242 } 1243 1244 static u8 hci_cc_user_confirm_reply(struct hci_dev *hdev, void *data, 1245 struct sk_buff *skb) 1246 { 1247 struct hci_rp_user_confirm_reply *rp = data; 1248 1249 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1250 1251 hci_dev_lock(hdev); 1252 1253 if (hci_dev_test_flag(hdev, HCI_MGMT)) 1254 mgmt_user_confirm_reply_complete(hdev, &rp->bdaddr, ACL_LINK, 0, 1255 rp->status); 1256 1257 hci_dev_unlock(hdev); 1258 1259 return rp->status; 1260 } 1261 1262 static u8 hci_cc_user_confirm_neg_reply(struct hci_dev *hdev, void *data, 1263 struct sk_buff *skb) 1264 { 1265 struct hci_rp_user_confirm_reply *rp = data; 1266 1267 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1268 1269 hci_dev_lock(hdev); 1270 1271 if (hci_dev_test_flag(hdev, HCI_MGMT)) 1272 mgmt_user_confirm_neg_reply_complete(hdev, &rp->bdaddr, 1273 ACL_LINK, 0, rp->status); 1274 1275 hci_dev_unlock(hdev); 1276 1277 return rp->status; 1278 } 1279 1280 static u8 hci_cc_user_passkey_reply(struct hci_dev *hdev, void *data, 1281 struct sk_buff *skb) 1282 { 1283 struct hci_rp_user_confirm_reply *rp = data; 1284 1285 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1286 1287 hci_dev_lock(hdev); 1288 1289 if (hci_dev_test_flag(hdev, HCI_MGMT)) 1290 mgmt_user_passkey_reply_complete(hdev, &rp->bdaddr, ACL_LINK, 1291 0, rp->status); 1292 1293 hci_dev_unlock(hdev); 1294 1295 return rp->status; 1296 } 1297 1298 static u8 hci_cc_user_passkey_neg_reply(struct hci_dev *hdev, void *data, 1299 struct sk_buff *skb) 1300 { 1301 struct hci_rp_user_confirm_reply *rp = data; 1302 1303 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1304 1305 hci_dev_lock(hdev); 1306 1307 if (hci_dev_test_flag(hdev, HCI_MGMT)) 1308 mgmt_user_passkey_neg_reply_complete(hdev, &rp->bdaddr, 1309 ACL_LINK, 0, rp->status); 1310 1311 hci_dev_unlock(hdev); 1312 1313 return rp->status; 1314 } 1315 1316 static u8 hci_cc_read_local_oob_data(struct hci_dev *hdev, void *data, 1317 struct sk_buff *skb) 1318 { 1319 struct hci_rp_read_local_oob_data *rp = data; 1320 1321 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1322 1323 return rp->status; 1324 } 1325 1326 static u8 hci_cc_read_local_oob_ext_data(struct hci_dev *hdev, void *data, 1327 struct sk_buff *skb) 1328 { 1329 struct hci_rp_read_local_oob_ext_data *rp = data; 1330 1331 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1332 1333 return rp->status; 1334 } 1335 1336 static u8 hci_cc_le_set_random_addr(struct hci_dev *hdev, void *data, 1337 struct sk_buff *skb) 1338 { 1339 struct hci_ev_status *rp = data; 1340 bdaddr_t *sent; 1341 1342 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1343 1344 if (rp->status) 1345 return rp->status; 1346 1347 sent = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_RANDOM_ADDR); 1348 if (!sent) 1349 return rp->status; 1350 1351 hci_dev_lock(hdev); 1352 1353 bacpy(&hdev->random_addr, sent); 1354 1355 if (!bacmp(&hdev->rpa, sent)) { 1356 hci_dev_clear_flag(hdev, HCI_RPA_EXPIRED); 1357 queue_delayed_work(hdev->workqueue, &hdev->rpa_expired, 1358 secs_to_jiffies(hdev->rpa_timeout)); 1359 } 1360 1361 hci_dev_unlock(hdev); 1362 1363 return rp->status; 1364 } 1365 1366 static u8 hci_cc_le_set_default_phy(struct hci_dev *hdev, void *data, 1367 struct sk_buff *skb) 1368 { 1369 struct hci_ev_status *rp = data; 1370 struct hci_cp_le_set_default_phy *cp; 1371 1372 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1373 1374 if (rp->status) 1375 return rp->status; 1376 1377 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_DEFAULT_PHY); 1378 if (!cp) 1379 return rp->status; 1380 1381 hci_dev_lock(hdev); 1382 1383 hdev->le_tx_def_phys = cp->tx_phys; 1384 hdev->le_rx_def_phys = cp->rx_phys; 1385 1386 hci_dev_unlock(hdev); 1387 1388 return rp->status; 1389 } 1390 1391 static u8 hci_cc_le_set_adv_set_random_addr(struct hci_dev *hdev, void *data, 1392 struct sk_buff *skb) 1393 { 1394 struct hci_ev_status *rp = data; 1395 struct hci_cp_le_set_adv_set_rand_addr *cp; 1396 struct adv_info *adv; 1397 1398 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1399 1400 if (rp->status) 1401 return rp->status; 1402 1403 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_ADV_SET_RAND_ADDR); 1404 /* Update only in case the adv instance since handle 0x00 shall be using 1405 * HCI_OP_LE_SET_RANDOM_ADDR since that allows both extended and 1406 * non-extended adverting. 1407 */ 1408 if (!cp || !cp->handle) 1409 return rp->status; 1410 1411 hci_dev_lock(hdev); 1412 1413 adv = hci_find_adv_instance(hdev, cp->handle); 1414 if (adv) { 1415 bacpy(&adv->random_addr, &cp->bdaddr); 1416 if (!bacmp(&hdev->rpa, &cp->bdaddr)) { 1417 adv->rpa_expired = false; 1418 queue_delayed_work(hdev->workqueue, 1419 &adv->rpa_expired_cb, 1420 secs_to_jiffies(hdev->rpa_timeout)); 1421 } 1422 } 1423 1424 hci_dev_unlock(hdev); 1425 1426 return rp->status; 1427 } 1428 1429 static u8 hci_cc_le_remove_adv_set(struct hci_dev *hdev, void *data, 1430 struct sk_buff *skb) 1431 { 1432 struct hci_ev_status *rp = data; 1433 u8 *instance; 1434 int err; 1435 1436 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1437 1438 if (rp->status) 1439 return rp->status; 1440 1441 instance = hci_sent_cmd_data(hdev, HCI_OP_LE_REMOVE_ADV_SET); 1442 if (!instance) 1443 return rp->status; 1444 1445 hci_dev_lock(hdev); 1446 1447 err = hci_remove_adv_instance(hdev, *instance); 1448 if (!err) 1449 mgmt_advertising_removed(hci_skb_sk(hdev->sent_cmd), hdev, 1450 *instance); 1451 1452 hci_dev_unlock(hdev); 1453 1454 return rp->status; 1455 } 1456 1457 static u8 hci_cc_le_clear_adv_sets(struct hci_dev *hdev, void *data, 1458 struct sk_buff *skb) 1459 { 1460 struct hci_ev_status *rp = data; 1461 struct adv_info *adv, *n; 1462 int err; 1463 1464 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1465 1466 if (rp->status) 1467 return rp->status; 1468 1469 if (!hci_sent_cmd_data(hdev, HCI_OP_LE_CLEAR_ADV_SETS)) 1470 return rp->status; 1471 1472 hci_dev_lock(hdev); 1473 1474 list_for_each_entry_safe(adv, n, &hdev->adv_instances, list) { 1475 u8 instance = adv->instance; 1476 1477 err = hci_remove_adv_instance(hdev, instance); 1478 if (!err) 1479 mgmt_advertising_removed(hci_skb_sk(hdev->sent_cmd), 1480 hdev, instance); 1481 } 1482 1483 hci_dev_unlock(hdev); 1484 1485 return rp->status; 1486 } 1487 1488 static u8 hci_cc_le_read_transmit_power(struct hci_dev *hdev, void *data, 1489 struct sk_buff *skb) 1490 { 1491 struct hci_rp_le_read_transmit_power *rp = data; 1492 1493 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1494 1495 if (rp->status) 1496 return rp->status; 1497 1498 hdev->min_le_tx_power = rp->min_le_tx_power; 1499 hdev->max_le_tx_power = rp->max_le_tx_power; 1500 1501 return rp->status; 1502 } 1503 1504 static u8 hci_cc_le_set_privacy_mode(struct hci_dev *hdev, void *data, 1505 struct sk_buff *skb) 1506 { 1507 struct hci_ev_status *rp = data; 1508 struct hci_cp_le_set_privacy_mode *cp; 1509 struct hci_conn_params *params; 1510 1511 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1512 1513 if (rp->status) 1514 return rp->status; 1515 1516 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_PRIVACY_MODE); 1517 if (!cp) 1518 return rp->status; 1519 1520 hci_dev_lock(hdev); 1521 1522 params = hci_conn_params_lookup(hdev, &cp->bdaddr, cp->bdaddr_type); 1523 if (params) 1524 WRITE_ONCE(params->privacy_mode, cp->mode); 1525 1526 hci_dev_unlock(hdev); 1527 1528 return rp->status; 1529 } 1530 1531 static u8 hci_cc_le_set_adv_enable(struct hci_dev *hdev, void *data, 1532 struct sk_buff *skb) 1533 { 1534 struct hci_ev_status *rp = data; 1535 __u8 *sent; 1536 1537 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1538 1539 if (rp->status) 1540 return rp->status; 1541 1542 sent = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_ADV_ENABLE); 1543 if (!sent) 1544 return rp->status; 1545 1546 hci_dev_lock(hdev); 1547 1548 /* If we're doing connection initiation as peripheral. Set a 1549 * timeout in case something goes wrong. 1550 */ 1551 if (*sent) { 1552 struct hci_conn *conn; 1553 1554 hci_dev_set_flag(hdev, HCI_LE_ADV); 1555 1556 conn = hci_lookup_le_connect(hdev); 1557 if (conn) 1558 queue_delayed_work(hdev->workqueue, 1559 &conn->le_conn_timeout, 1560 conn->conn_timeout); 1561 } else { 1562 hci_dev_clear_flag(hdev, HCI_LE_ADV); 1563 } 1564 1565 hci_dev_unlock(hdev); 1566 1567 return rp->status; 1568 } 1569 1570 static u8 hci_cc_le_set_ext_adv_enable(struct hci_dev *hdev, void *data, 1571 struct sk_buff *skb) 1572 { 1573 struct hci_cp_le_set_ext_adv_enable *cp; 1574 struct hci_cp_ext_adv_set *set; 1575 struct adv_info *adv = NULL, *n; 1576 struct hci_ev_status *rp = data; 1577 1578 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1579 1580 if (rp->status) 1581 return rp->status; 1582 1583 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_EXT_ADV_ENABLE); 1584 if (!cp) 1585 return rp->status; 1586 1587 set = (void *)cp->data; 1588 1589 hci_dev_lock(hdev); 1590 1591 if (cp->num_of_sets) 1592 adv = hci_find_adv_instance(hdev, set->handle); 1593 1594 if (cp->enable) { 1595 struct hci_conn *conn; 1596 1597 hci_dev_set_flag(hdev, HCI_LE_ADV); 1598 1599 if (adv && !adv->periodic) 1600 adv->enabled = true; 1601 1602 conn = hci_lookup_le_connect(hdev); 1603 if (conn) 1604 queue_delayed_work(hdev->workqueue, 1605 &conn->le_conn_timeout, 1606 conn->conn_timeout); 1607 } else { 1608 if (cp->num_of_sets) { 1609 if (adv) 1610 adv->enabled = false; 1611 1612 /* If just one instance was disabled check if there are 1613 * any other instance enabled before clearing HCI_LE_ADV 1614 */ 1615 list_for_each_entry_safe(adv, n, &hdev->adv_instances, 1616 list) { 1617 if (adv->enabled) 1618 goto unlock; 1619 } 1620 } else { 1621 /* All instances shall be considered disabled */ 1622 list_for_each_entry_safe(adv, n, &hdev->adv_instances, 1623 list) 1624 adv->enabled = false; 1625 } 1626 1627 hci_dev_clear_flag(hdev, HCI_LE_ADV); 1628 } 1629 1630 unlock: 1631 hci_dev_unlock(hdev); 1632 return rp->status; 1633 } 1634 1635 static u8 hci_cc_le_set_scan_param(struct hci_dev *hdev, void *data, 1636 struct sk_buff *skb) 1637 { 1638 struct hci_cp_le_set_scan_param *cp; 1639 struct hci_ev_status *rp = data; 1640 1641 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1642 1643 if (rp->status) 1644 return rp->status; 1645 1646 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_SCAN_PARAM); 1647 if (!cp) 1648 return rp->status; 1649 1650 hci_dev_lock(hdev); 1651 1652 hdev->le_scan_type = cp->type; 1653 1654 hci_dev_unlock(hdev); 1655 1656 return rp->status; 1657 } 1658 1659 static u8 hci_cc_le_set_ext_scan_param(struct hci_dev *hdev, void *data, 1660 struct sk_buff *skb) 1661 { 1662 struct hci_cp_le_set_ext_scan_params *cp; 1663 struct hci_ev_status *rp = data; 1664 struct hci_cp_le_scan_phy_params *phy_param; 1665 1666 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1667 1668 if (rp->status) 1669 return rp->status; 1670 1671 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_EXT_SCAN_PARAMS); 1672 if (!cp) 1673 return rp->status; 1674 1675 phy_param = (void *)cp->data; 1676 1677 hci_dev_lock(hdev); 1678 1679 hdev->le_scan_type = phy_param->type; 1680 1681 hci_dev_unlock(hdev); 1682 1683 return rp->status; 1684 } 1685 1686 static bool has_pending_adv_report(struct hci_dev *hdev) 1687 { 1688 struct discovery_state *d = &hdev->discovery; 1689 1690 return bacmp(&d->last_adv_addr, BDADDR_ANY); 1691 } 1692 1693 static void clear_pending_adv_report(struct hci_dev *hdev) 1694 { 1695 struct discovery_state *d = &hdev->discovery; 1696 1697 bacpy(&d->last_adv_addr, BDADDR_ANY); 1698 d->last_adv_data_len = 0; 1699 } 1700 1701 static void store_pending_adv_report(struct hci_dev *hdev, bdaddr_t *bdaddr, 1702 u8 bdaddr_type, s8 rssi, u32 flags, 1703 u8 *data, u8 len) 1704 { 1705 struct discovery_state *d = &hdev->discovery; 1706 1707 if (len > max_adv_len(hdev)) 1708 return; 1709 1710 bacpy(&d->last_adv_addr, bdaddr); 1711 d->last_adv_addr_type = bdaddr_type; 1712 d->last_adv_rssi = rssi; 1713 d->last_adv_flags = flags; 1714 memcpy(d->last_adv_data, data, len); 1715 d->last_adv_data_len = len; 1716 } 1717 1718 static void le_set_scan_enable_complete(struct hci_dev *hdev, u8 enable) 1719 { 1720 hci_dev_lock(hdev); 1721 1722 switch (enable) { 1723 case LE_SCAN_ENABLE: 1724 hci_dev_set_flag(hdev, HCI_LE_SCAN); 1725 if (hdev->le_scan_type == LE_SCAN_ACTIVE) { 1726 clear_pending_adv_report(hdev); 1727 hci_discovery_set_state(hdev, DISCOVERY_FINDING); 1728 } 1729 break; 1730 1731 case LE_SCAN_DISABLE: 1732 /* We do this here instead of when setting DISCOVERY_STOPPED 1733 * since the latter would potentially require waiting for 1734 * inquiry to stop too. 1735 */ 1736 if (has_pending_adv_report(hdev)) { 1737 struct discovery_state *d = &hdev->discovery; 1738 1739 mgmt_device_found(hdev, &d->last_adv_addr, LE_LINK, 1740 d->last_adv_addr_type, NULL, 1741 d->last_adv_rssi, d->last_adv_flags, 1742 d->last_adv_data, 1743 d->last_adv_data_len, NULL, 0, 0); 1744 } 1745 1746 /* Cancel this timer so that we don't try to disable scanning 1747 * when it's already disabled. 1748 */ 1749 cancel_delayed_work(&hdev->le_scan_disable); 1750 1751 hci_dev_clear_flag(hdev, HCI_LE_SCAN); 1752 1753 /* The HCI_LE_SCAN_INTERRUPTED flag indicates that we 1754 * interrupted scanning due to a connect request. Mark 1755 * therefore discovery as stopped. 1756 */ 1757 if (hci_dev_test_and_clear_flag(hdev, HCI_LE_SCAN_INTERRUPTED)) 1758 hci_discovery_set_state(hdev, DISCOVERY_STOPPED); 1759 else if (!hci_dev_test_flag(hdev, HCI_LE_ADV) && 1760 hdev->discovery.state == DISCOVERY_FINDING) 1761 queue_work(hdev->workqueue, &hdev->reenable_adv_work); 1762 1763 break; 1764 1765 default: 1766 bt_dev_err(hdev, "use of reserved LE_Scan_Enable param %d", 1767 enable); 1768 break; 1769 } 1770 1771 hci_dev_unlock(hdev); 1772 } 1773 1774 static u8 hci_cc_le_set_scan_enable(struct hci_dev *hdev, void *data, 1775 struct sk_buff *skb) 1776 { 1777 struct hci_cp_le_set_scan_enable *cp; 1778 struct hci_ev_status *rp = data; 1779 1780 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1781 1782 if (rp->status) 1783 return rp->status; 1784 1785 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_SCAN_ENABLE); 1786 if (!cp) 1787 return rp->status; 1788 1789 le_set_scan_enable_complete(hdev, cp->enable); 1790 1791 return rp->status; 1792 } 1793 1794 static u8 hci_cc_le_set_ext_scan_enable(struct hci_dev *hdev, void *data, 1795 struct sk_buff *skb) 1796 { 1797 struct hci_cp_le_set_ext_scan_enable *cp; 1798 struct hci_ev_status *rp = data; 1799 1800 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1801 1802 if (rp->status) 1803 return rp->status; 1804 1805 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_EXT_SCAN_ENABLE); 1806 if (!cp) 1807 return rp->status; 1808 1809 le_set_scan_enable_complete(hdev, cp->enable); 1810 1811 return rp->status; 1812 } 1813 1814 static u8 hci_cc_le_read_num_adv_sets(struct hci_dev *hdev, void *data, 1815 struct sk_buff *skb) 1816 { 1817 struct hci_rp_le_read_num_supported_adv_sets *rp = data; 1818 1819 bt_dev_dbg(hdev, "status 0x%2.2x No of Adv sets %u", rp->status, 1820 rp->num_of_sets); 1821 1822 if (rp->status) 1823 return rp->status; 1824 1825 hdev->le_num_of_adv_sets = rp->num_of_sets; 1826 1827 return rp->status; 1828 } 1829 1830 static u8 hci_cc_le_read_accept_list_size(struct hci_dev *hdev, void *data, 1831 struct sk_buff *skb) 1832 { 1833 struct hci_rp_le_read_accept_list_size *rp = data; 1834 1835 bt_dev_dbg(hdev, "status 0x%2.2x size %u", rp->status, rp->size); 1836 1837 if (rp->status) 1838 return rp->status; 1839 1840 hdev->le_accept_list_size = rp->size; 1841 1842 return rp->status; 1843 } 1844 1845 static u8 hci_cc_le_clear_accept_list(struct hci_dev *hdev, void *data, 1846 struct sk_buff *skb) 1847 { 1848 struct hci_ev_status *rp = data; 1849 1850 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1851 1852 if (rp->status) 1853 return rp->status; 1854 1855 hci_dev_lock(hdev); 1856 hci_bdaddr_list_clear(&hdev->le_accept_list); 1857 hci_dev_unlock(hdev); 1858 1859 return rp->status; 1860 } 1861 1862 static u8 hci_cc_le_add_to_accept_list(struct hci_dev *hdev, void *data, 1863 struct sk_buff *skb) 1864 { 1865 struct hci_cp_le_add_to_accept_list *sent; 1866 struct hci_ev_status *rp = data; 1867 1868 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1869 1870 if (rp->status) 1871 return rp->status; 1872 1873 sent = hci_sent_cmd_data(hdev, HCI_OP_LE_ADD_TO_ACCEPT_LIST); 1874 if (!sent) 1875 return rp->status; 1876 1877 hci_dev_lock(hdev); 1878 hci_bdaddr_list_add(&hdev->le_accept_list, &sent->bdaddr, 1879 sent->bdaddr_type); 1880 hci_dev_unlock(hdev); 1881 1882 return rp->status; 1883 } 1884 1885 static u8 hci_cc_le_del_from_accept_list(struct hci_dev *hdev, void *data, 1886 struct sk_buff *skb) 1887 { 1888 struct hci_cp_le_del_from_accept_list *sent; 1889 struct hci_ev_status *rp = data; 1890 1891 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1892 1893 if (rp->status) 1894 return rp->status; 1895 1896 sent = hci_sent_cmd_data(hdev, HCI_OP_LE_DEL_FROM_ACCEPT_LIST); 1897 if (!sent) 1898 return rp->status; 1899 1900 hci_dev_lock(hdev); 1901 hci_bdaddr_list_del(&hdev->le_accept_list, &sent->bdaddr, 1902 sent->bdaddr_type); 1903 hci_dev_unlock(hdev); 1904 1905 return rp->status; 1906 } 1907 1908 static u8 hci_cc_le_read_supported_states(struct hci_dev *hdev, void *data, 1909 struct sk_buff *skb) 1910 { 1911 struct hci_rp_le_read_supported_states *rp = data; 1912 1913 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1914 1915 if (rp->status) 1916 return rp->status; 1917 1918 memcpy(hdev->le_states, rp->le_states, 8); 1919 1920 return rp->status; 1921 } 1922 1923 static u8 hci_cc_le_read_def_data_len(struct hci_dev *hdev, void *data, 1924 struct sk_buff *skb) 1925 { 1926 struct hci_rp_le_read_def_data_len *rp = data; 1927 1928 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1929 1930 if (rp->status) 1931 return rp->status; 1932 1933 hdev->le_def_tx_len = le16_to_cpu(rp->tx_len); 1934 hdev->le_def_tx_time = le16_to_cpu(rp->tx_time); 1935 1936 return rp->status; 1937 } 1938 1939 static u8 hci_cc_le_write_def_data_len(struct hci_dev *hdev, void *data, 1940 struct sk_buff *skb) 1941 { 1942 struct hci_cp_le_write_def_data_len *sent; 1943 struct hci_ev_status *rp = data; 1944 1945 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1946 1947 if (rp->status) 1948 return rp->status; 1949 1950 sent = hci_sent_cmd_data(hdev, HCI_OP_LE_WRITE_DEF_DATA_LEN); 1951 if (!sent) 1952 return rp->status; 1953 1954 hdev->le_def_tx_len = le16_to_cpu(sent->tx_len); 1955 hdev->le_def_tx_time = le16_to_cpu(sent->tx_time); 1956 1957 return rp->status; 1958 } 1959 1960 static u8 hci_cc_le_add_to_resolv_list(struct hci_dev *hdev, void *data, 1961 struct sk_buff *skb) 1962 { 1963 struct hci_cp_le_add_to_resolv_list *sent; 1964 struct hci_ev_status *rp = data; 1965 1966 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1967 1968 if (rp->status) 1969 return rp->status; 1970 1971 sent = hci_sent_cmd_data(hdev, HCI_OP_LE_ADD_TO_RESOLV_LIST); 1972 if (!sent) 1973 return rp->status; 1974 1975 hci_dev_lock(hdev); 1976 hci_bdaddr_list_add_with_irk(&hdev->le_resolv_list, &sent->bdaddr, 1977 sent->bdaddr_type, sent->peer_irk, 1978 sent->local_irk); 1979 hci_dev_unlock(hdev); 1980 1981 return rp->status; 1982 } 1983 1984 static u8 hci_cc_le_del_from_resolv_list(struct hci_dev *hdev, void *data, 1985 struct sk_buff *skb) 1986 { 1987 struct hci_cp_le_del_from_resolv_list *sent; 1988 struct hci_ev_status *rp = data; 1989 1990 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1991 1992 if (rp->status) 1993 return rp->status; 1994 1995 sent = hci_sent_cmd_data(hdev, HCI_OP_LE_DEL_FROM_RESOLV_LIST); 1996 if (!sent) 1997 return rp->status; 1998 1999 hci_dev_lock(hdev); 2000 hci_bdaddr_list_del_with_irk(&hdev->le_resolv_list, &sent->bdaddr, 2001 sent->bdaddr_type); 2002 hci_dev_unlock(hdev); 2003 2004 return rp->status; 2005 } 2006 2007 static u8 hci_cc_le_clear_resolv_list(struct hci_dev *hdev, void *data, 2008 struct sk_buff *skb) 2009 { 2010 struct hci_ev_status *rp = data; 2011 2012 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 2013 2014 if (rp->status) 2015 return rp->status; 2016 2017 hci_dev_lock(hdev); 2018 hci_bdaddr_list_clear(&hdev->le_resolv_list); 2019 hci_dev_unlock(hdev); 2020 2021 return rp->status; 2022 } 2023 2024 static u8 hci_cc_le_read_resolv_list_size(struct hci_dev *hdev, void *data, 2025 struct sk_buff *skb) 2026 { 2027 struct hci_rp_le_read_resolv_list_size *rp = data; 2028 2029 bt_dev_dbg(hdev, "status 0x%2.2x size %u", rp->status, rp->size); 2030 2031 if (rp->status) 2032 return rp->status; 2033 2034 hdev->le_resolv_list_size = rp->size; 2035 2036 return rp->status; 2037 } 2038 2039 static u8 hci_cc_le_set_addr_resolution_enable(struct hci_dev *hdev, void *data, 2040 struct sk_buff *skb) 2041 { 2042 struct hci_ev_status *rp = data; 2043 __u8 *sent; 2044 2045 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 2046 2047 if (rp->status) 2048 return rp->status; 2049 2050 sent = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_ADDR_RESOLV_ENABLE); 2051 if (!sent) 2052 return rp->status; 2053 2054 hci_dev_lock(hdev); 2055 2056 if (*sent) 2057 hci_dev_set_flag(hdev, HCI_LL_RPA_RESOLUTION); 2058 else 2059 hci_dev_clear_flag(hdev, HCI_LL_RPA_RESOLUTION); 2060 2061 hci_dev_unlock(hdev); 2062 2063 return rp->status; 2064 } 2065 2066 static u8 hci_cc_le_read_max_data_len(struct hci_dev *hdev, void *data, 2067 struct sk_buff *skb) 2068 { 2069 struct hci_rp_le_read_max_data_len *rp = data; 2070 2071 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 2072 2073 if (rp->status) 2074 return rp->status; 2075 2076 hdev->le_max_tx_len = le16_to_cpu(rp->tx_len); 2077 hdev->le_max_tx_time = le16_to_cpu(rp->tx_time); 2078 hdev->le_max_rx_len = le16_to_cpu(rp->rx_len); 2079 hdev->le_max_rx_time = le16_to_cpu(rp->rx_time); 2080 2081 return rp->status; 2082 } 2083 2084 static u8 hci_cc_write_le_host_supported(struct hci_dev *hdev, void *data, 2085 struct sk_buff *skb) 2086 { 2087 struct hci_cp_write_le_host_supported *sent; 2088 struct hci_ev_status *rp = data; 2089 2090 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 2091 2092 if (rp->status) 2093 return rp->status; 2094 2095 sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_LE_HOST_SUPPORTED); 2096 if (!sent) 2097 return rp->status; 2098 2099 hci_dev_lock(hdev); 2100 2101 if (sent->le) { 2102 hdev->features[1][0] |= LMP_HOST_LE; 2103 hci_dev_set_flag(hdev, HCI_LE_ENABLED); 2104 } else { 2105 hdev->features[1][0] &= ~LMP_HOST_LE; 2106 hci_dev_clear_flag(hdev, HCI_LE_ENABLED); 2107 hci_dev_clear_flag(hdev, HCI_ADVERTISING); 2108 } 2109 2110 if (sent->simul) 2111 hdev->features[1][0] |= LMP_HOST_LE_BREDR; 2112 else 2113 hdev->features[1][0] &= ~LMP_HOST_LE_BREDR; 2114 2115 hci_dev_unlock(hdev); 2116 2117 return rp->status; 2118 } 2119 2120 static u8 hci_cc_set_adv_param(struct hci_dev *hdev, void *data, 2121 struct sk_buff *skb) 2122 { 2123 struct hci_cp_le_set_adv_param *cp; 2124 struct hci_ev_status *rp = data; 2125 2126 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 2127 2128 if (rp->status) 2129 return rp->status; 2130 2131 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_ADV_PARAM); 2132 if (!cp) 2133 return rp->status; 2134 2135 hci_dev_lock(hdev); 2136 hdev->adv_addr_type = cp->own_address_type; 2137 hci_dev_unlock(hdev); 2138 2139 return rp->status; 2140 } 2141 2142 static u8 hci_cc_set_ext_adv_param(struct hci_dev *hdev, void *data, 2143 struct sk_buff *skb) 2144 { 2145 struct hci_rp_le_set_ext_adv_params *rp = data; 2146 struct hci_cp_le_set_ext_adv_params *cp; 2147 struct adv_info *adv_instance; 2148 2149 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 2150 2151 if (rp->status) 2152 return rp->status; 2153 2154 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_EXT_ADV_PARAMS); 2155 if (!cp) 2156 return rp->status; 2157 2158 hci_dev_lock(hdev); 2159 hdev->adv_addr_type = cp->own_addr_type; 2160 if (!cp->handle) { 2161 /* Store in hdev for instance 0 */ 2162 hdev->adv_tx_power = rp->tx_power; 2163 } else { 2164 adv_instance = hci_find_adv_instance(hdev, cp->handle); 2165 if (adv_instance) 2166 adv_instance->tx_power = rp->tx_power; 2167 } 2168 /* Update adv data as tx power is known now */ 2169 hci_update_adv_data(hdev, cp->handle); 2170 2171 hci_dev_unlock(hdev); 2172 2173 return rp->status; 2174 } 2175 2176 static u8 hci_cc_read_rssi(struct hci_dev *hdev, void *data, 2177 struct sk_buff *skb) 2178 { 2179 struct hci_rp_read_rssi *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 hci_dev_lock(hdev); 2188 2189 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(rp->handle)); 2190 if (conn) 2191 conn->rssi = rp->rssi; 2192 2193 hci_dev_unlock(hdev); 2194 2195 return rp->status; 2196 } 2197 2198 static u8 hci_cc_read_tx_power(struct hci_dev *hdev, void *data, 2199 struct sk_buff *skb) 2200 { 2201 struct hci_cp_read_tx_power *sent; 2202 struct hci_rp_read_tx_power *rp = data; 2203 struct hci_conn *conn; 2204 2205 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 2206 2207 if (rp->status) 2208 return rp->status; 2209 2210 sent = hci_sent_cmd_data(hdev, HCI_OP_READ_TX_POWER); 2211 if (!sent) 2212 return rp->status; 2213 2214 hci_dev_lock(hdev); 2215 2216 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(rp->handle)); 2217 if (!conn) 2218 goto unlock; 2219 2220 switch (sent->type) { 2221 case 0x00: 2222 conn->tx_power = rp->tx_power; 2223 break; 2224 case 0x01: 2225 conn->max_tx_power = rp->tx_power; 2226 break; 2227 } 2228 2229 unlock: 2230 hci_dev_unlock(hdev); 2231 return rp->status; 2232 } 2233 2234 static u8 hci_cc_write_ssp_debug_mode(struct hci_dev *hdev, void *data, 2235 struct sk_buff *skb) 2236 { 2237 struct hci_ev_status *rp = data; 2238 u8 *mode; 2239 2240 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 2241 2242 if (rp->status) 2243 return rp->status; 2244 2245 mode = hci_sent_cmd_data(hdev, HCI_OP_WRITE_SSP_DEBUG_MODE); 2246 if (mode) 2247 hdev->ssp_debug_mode = *mode; 2248 2249 return rp->status; 2250 } 2251 2252 static void hci_cs_inquiry(struct hci_dev *hdev, __u8 status) 2253 { 2254 bt_dev_dbg(hdev, "status 0x%2.2x", status); 2255 2256 if (status) 2257 return; 2258 2259 if (hci_sent_cmd_data(hdev, HCI_OP_INQUIRY)) 2260 set_bit(HCI_INQUIRY, &hdev->flags); 2261 } 2262 2263 static void hci_cs_create_conn(struct hci_dev *hdev, __u8 status) 2264 { 2265 struct hci_cp_create_conn *cp; 2266 struct hci_conn *conn; 2267 2268 bt_dev_dbg(hdev, "status 0x%2.2x", status); 2269 2270 cp = hci_sent_cmd_data(hdev, HCI_OP_CREATE_CONN); 2271 if (!cp) 2272 return; 2273 2274 hci_dev_lock(hdev); 2275 2276 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &cp->bdaddr); 2277 2278 bt_dev_dbg(hdev, "bdaddr %pMR hcon %p", &cp->bdaddr, conn); 2279 2280 if (status) { 2281 if (conn && conn->state == BT_CONNECT) { 2282 conn->state = BT_CLOSED; 2283 hci_connect_cfm(conn, status); 2284 hci_conn_del(conn); 2285 } 2286 } else { 2287 if (!conn) { 2288 conn = hci_conn_add_unset(hdev, ACL_LINK, &cp->bdaddr, 2289 HCI_ROLE_MASTER); 2290 if (IS_ERR(conn)) 2291 bt_dev_err(hdev, "connection err: %ld", PTR_ERR(conn)); 2292 } 2293 } 2294 2295 hci_dev_unlock(hdev); 2296 } 2297 2298 static void hci_cs_add_sco(struct hci_dev *hdev, __u8 status) 2299 { 2300 struct hci_cp_add_sco *cp; 2301 struct hci_conn *acl; 2302 struct hci_link *link; 2303 __u16 handle; 2304 2305 bt_dev_dbg(hdev, "status 0x%2.2x", status); 2306 2307 if (!status) 2308 return; 2309 2310 cp = hci_sent_cmd_data(hdev, HCI_OP_ADD_SCO); 2311 if (!cp) 2312 return; 2313 2314 handle = __le16_to_cpu(cp->handle); 2315 2316 bt_dev_dbg(hdev, "handle 0x%4.4x", handle); 2317 2318 hci_dev_lock(hdev); 2319 2320 acl = hci_conn_hash_lookup_handle(hdev, handle); 2321 if (acl) { 2322 link = list_first_entry_or_null(&acl->link_list, 2323 struct hci_link, list); 2324 if (link && link->conn) { 2325 link->conn->state = BT_CLOSED; 2326 2327 hci_connect_cfm(link->conn, status); 2328 hci_conn_del(link->conn); 2329 } 2330 } 2331 2332 hci_dev_unlock(hdev); 2333 } 2334 2335 static void hci_cs_auth_requested(struct hci_dev *hdev, __u8 status) 2336 { 2337 struct hci_cp_auth_requested *cp; 2338 struct hci_conn *conn; 2339 2340 bt_dev_dbg(hdev, "status 0x%2.2x", status); 2341 2342 if (!status) 2343 return; 2344 2345 cp = hci_sent_cmd_data(hdev, HCI_OP_AUTH_REQUESTED); 2346 if (!cp) 2347 return; 2348 2349 hci_dev_lock(hdev); 2350 2351 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle)); 2352 if (conn) { 2353 if (conn->state == BT_CONFIG) { 2354 hci_connect_cfm(conn, status); 2355 hci_conn_drop(conn); 2356 } 2357 } 2358 2359 hci_dev_unlock(hdev); 2360 } 2361 2362 static void hci_cs_set_conn_encrypt(struct hci_dev *hdev, __u8 status) 2363 { 2364 struct hci_cp_set_conn_encrypt *cp; 2365 struct hci_conn *conn; 2366 2367 bt_dev_dbg(hdev, "status 0x%2.2x", status); 2368 2369 if (!status) 2370 return; 2371 2372 cp = hci_sent_cmd_data(hdev, HCI_OP_SET_CONN_ENCRYPT); 2373 if (!cp) 2374 return; 2375 2376 hci_dev_lock(hdev); 2377 2378 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle)); 2379 if (conn) { 2380 if (conn->state == BT_CONFIG) { 2381 hci_connect_cfm(conn, status); 2382 hci_conn_drop(conn); 2383 } 2384 } 2385 2386 hci_dev_unlock(hdev); 2387 } 2388 2389 static int hci_outgoing_auth_needed(struct hci_dev *hdev, 2390 struct hci_conn *conn) 2391 { 2392 if (conn->state != BT_CONFIG || !conn->out) 2393 return 0; 2394 2395 if (conn->pending_sec_level == BT_SECURITY_SDP) 2396 return 0; 2397 2398 /* Only request authentication for SSP connections or non-SSP 2399 * devices with sec_level MEDIUM or HIGH or if MITM protection 2400 * is requested. 2401 */ 2402 if (!hci_conn_ssp_enabled(conn) && !(conn->auth_type & 0x01) && 2403 conn->pending_sec_level != BT_SECURITY_FIPS && 2404 conn->pending_sec_level != BT_SECURITY_HIGH && 2405 conn->pending_sec_level != BT_SECURITY_MEDIUM) 2406 return 0; 2407 2408 return 1; 2409 } 2410 2411 static int hci_resolve_name(struct hci_dev *hdev, 2412 struct inquiry_entry *e) 2413 { 2414 struct hci_cp_remote_name_req cp; 2415 2416 memset(&cp, 0, sizeof(cp)); 2417 2418 bacpy(&cp.bdaddr, &e->data.bdaddr); 2419 cp.pscan_rep_mode = e->data.pscan_rep_mode; 2420 cp.pscan_mode = e->data.pscan_mode; 2421 cp.clock_offset = e->data.clock_offset; 2422 2423 return hci_send_cmd(hdev, HCI_OP_REMOTE_NAME_REQ, sizeof(cp), &cp); 2424 } 2425 2426 static bool hci_resolve_next_name(struct hci_dev *hdev) 2427 { 2428 struct discovery_state *discov = &hdev->discovery; 2429 struct inquiry_entry *e; 2430 2431 if (list_empty(&discov->resolve)) 2432 return false; 2433 2434 /* We should stop if we already spent too much time resolving names. */ 2435 if (time_after(jiffies, discov->name_resolve_timeout)) { 2436 bt_dev_warn_ratelimited(hdev, "Name resolve takes too long."); 2437 return false; 2438 } 2439 2440 e = hci_inquiry_cache_lookup_resolve(hdev, BDADDR_ANY, NAME_NEEDED); 2441 if (!e) 2442 return false; 2443 2444 if (hci_resolve_name(hdev, e) == 0) { 2445 e->name_state = NAME_PENDING; 2446 return true; 2447 } 2448 2449 return false; 2450 } 2451 2452 static void hci_check_pending_name(struct hci_dev *hdev, struct hci_conn *conn, 2453 bdaddr_t *bdaddr, u8 *name, u8 name_len) 2454 { 2455 struct discovery_state *discov = &hdev->discovery; 2456 struct inquiry_entry *e; 2457 2458 /* Update the mgmt connected state if necessary. Be careful with 2459 * conn objects that exist but are not (yet) connected however. 2460 * Only those in BT_CONFIG or BT_CONNECTED states can be 2461 * considered connected. 2462 */ 2463 if (conn && (conn->state == BT_CONFIG || conn->state == BT_CONNECTED)) 2464 mgmt_device_connected(hdev, conn, name, name_len); 2465 2466 if (discov->state == DISCOVERY_STOPPED) 2467 return; 2468 2469 if (discov->state == DISCOVERY_STOPPING) 2470 goto discov_complete; 2471 2472 if (discov->state != DISCOVERY_RESOLVING) 2473 return; 2474 2475 e = hci_inquiry_cache_lookup_resolve(hdev, bdaddr, NAME_PENDING); 2476 /* If the device was not found in a list of found devices names of which 2477 * are pending. there is no need to continue resolving a next name as it 2478 * will be done upon receiving another Remote Name Request Complete 2479 * Event */ 2480 if (!e) 2481 return; 2482 2483 list_del(&e->list); 2484 2485 e->name_state = name ? NAME_KNOWN : NAME_NOT_KNOWN; 2486 mgmt_remote_name(hdev, bdaddr, ACL_LINK, 0x00, e->data.rssi, 2487 name, name_len); 2488 2489 if (hci_resolve_next_name(hdev)) 2490 return; 2491 2492 discov_complete: 2493 hci_discovery_set_state(hdev, DISCOVERY_STOPPED); 2494 } 2495 2496 static void hci_cs_remote_name_req(struct hci_dev *hdev, __u8 status) 2497 { 2498 struct hci_cp_remote_name_req *cp; 2499 struct hci_conn *conn; 2500 2501 bt_dev_dbg(hdev, "status 0x%2.2x", status); 2502 2503 /* If successful wait for the name req complete event before 2504 * checking for the need to do authentication */ 2505 if (!status) 2506 return; 2507 2508 cp = hci_sent_cmd_data(hdev, HCI_OP_REMOTE_NAME_REQ); 2509 if (!cp) 2510 return; 2511 2512 hci_dev_lock(hdev); 2513 2514 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &cp->bdaddr); 2515 2516 if (hci_dev_test_flag(hdev, HCI_MGMT)) 2517 hci_check_pending_name(hdev, conn, &cp->bdaddr, NULL, 0); 2518 2519 if (!conn) 2520 goto unlock; 2521 2522 if (!hci_outgoing_auth_needed(hdev, conn)) 2523 goto unlock; 2524 2525 if (!test_and_set_bit(HCI_CONN_AUTH_PEND, &conn->flags)) { 2526 struct hci_cp_auth_requested auth_cp; 2527 2528 set_bit(HCI_CONN_AUTH_INITIATOR, &conn->flags); 2529 2530 auth_cp.handle = __cpu_to_le16(conn->handle); 2531 hci_send_cmd(hdev, HCI_OP_AUTH_REQUESTED, 2532 sizeof(auth_cp), &auth_cp); 2533 } 2534 2535 unlock: 2536 hci_dev_unlock(hdev); 2537 } 2538 2539 static void hci_cs_read_remote_features(struct hci_dev *hdev, __u8 status) 2540 { 2541 struct hci_cp_read_remote_features *cp; 2542 struct hci_conn *conn; 2543 2544 bt_dev_dbg(hdev, "status 0x%2.2x", status); 2545 2546 if (!status) 2547 return; 2548 2549 cp = hci_sent_cmd_data(hdev, HCI_OP_READ_REMOTE_FEATURES); 2550 if (!cp) 2551 return; 2552 2553 hci_dev_lock(hdev); 2554 2555 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle)); 2556 if (conn) { 2557 if (conn->state == BT_CONFIG) { 2558 hci_connect_cfm(conn, status); 2559 hci_conn_drop(conn); 2560 } 2561 } 2562 2563 hci_dev_unlock(hdev); 2564 } 2565 2566 static void hci_cs_read_remote_ext_features(struct hci_dev *hdev, __u8 status) 2567 { 2568 struct hci_cp_read_remote_ext_features *cp; 2569 struct hci_conn *conn; 2570 2571 bt_dev_dbg(hdev, "status 0x%2.2x", status); 2572 2573 if (!status) 2574 return; 2575 2576 cp = hci_sent_cmd_data(hdev, HCI_OP_READ_REMOTE_EXT_FEATURES); 2577 if (!cp) 2578 return; 2579 2580 hci_dev_lock(hdev); 2581 2582 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle)); 2583 if (conn) { 2584 if (conn->state == BT_CONFIG) { 2585 hci_connect_cfm(conn, status); 2586 hci_conn_drop(conn); 2587 } 2588 } 2589 2590 hci_dev_unlock(hdev); 2591 } 2592 2593 static void hci_setup_sync_conn_status(struct hci_dev *hdev, __u16 handle, 2594 __u8 status) 2595 { 2596 struct hci_conn *acl; 2597 struct hci_link *link; 2598 2599 bt_dev_dbg(hdev, "handle 0x%4.4x status 0x%2.2x", handle, status); 2600 2601 hci_dev_lock(hdev); 2602 2603 acl = hci_conn_hash_lookup_handle(hdev, handle); 2604 if (acl) { 2605 link = list_first_entry_or_null(&acl->link_list, 2606 struct hci_link, list); 2607 if (link && link->conn) { 2608 link->conn->state = BT_CLOSED; 2609 2610 hci_connect_cfm(link->conn, status); 2611 hci_conn_del(link->conn); 2612 } 2613 } 2614 2615 hci_dev_unlock(hdev); 2616 } 2617 2618 static void hci_cs_setup_sync_conn(struct hci_dev *hdev, __u8 status) 2619 { 2620 struct hci_cp_setup_sync_conn *cp; 2621 2622 bt_dev_dbg(hdev, "status 0x%2.2x", status); 2623 2624 if (!status) 2625 return; 2626 2627 cp = hci_sent_cmd_data(hdev, HCI_OP_SETUP_SYNC_CONN); 2628 if (!cp) 2629 return; 2630 2631 hci_setup_sync_conn_status(hdev, __le16_to_cpu(cp->handle), status); 2632 } 2633 2634 static void hci_cs_enhanced_setup_sync_conn(struct hci_dev *hdev, __u8 status) 2635 { 2636 struct hci_cp_enhanced_setup_sync_conn *cp; 2637 2638 bt_dev_dbg(hdev, "status 0x%2.2x", status); 2639 2640 if (!status) 2641 return; 2642 2643 cp = hci_sent_cmd_data(hdev, HCI_OP_ENHANCED_SETUP_SYNC_CONN); 2644 if (!cp) 2645 return; 2646 2647 hci_setup_sync_conn_status(hdev, __le16_to_cpu(cp->handle), status); 2648 } 2649 2650 static void hci_cs_sniff_mode(struct hci_dev *hdev, __u8 status) 2651 { 2652 struct hci_cp_sniff_mode *cp; 2653 struct hci_conn *conn; 2654 2655 bt_dev_dbg(hdev, "status 0x%2.2x", status); 2656 2657 if (!status) 2658 return; 2659 2660 cp = hci_sent_cmd_data(hdev, HCI_OP_SNIFF_MODE); 2661 if (!cp) 2662 return; 2663 2664 hci_dev_lock(hdev); 2665 2666 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle)); 2667 if (conn) { 2668 clear_bit(HCI_CONN_MODE_CHANGE_PEND, &conn->flags); 2669 2670 if (test_and_clear_bit(HCI_CONN_SCO_SETUP_PEND, &conn->flags)) 2671 hci_sco_setup(conn, status); 2672 } 2673 2674 hci_dev_unlock(hdev); 2675 } 2676 2677 static void hci_cs_exit_sniff_mode(struct hci_dev *hdev, __u8 status) 2678 { 2679 struct hci_cp_exit_sniff_mode *cp; 2680 struct hci_conn *conn; 2681 2682 bt_dev_dbg(hdev, "status 0x%2.2x", status); 2683 2684 if (!status) 2685 return; 2686 2687 cp = hci_sent_cmd_data(hdev, HCI_OP_EXIT_SNIFF_MODE); 2688 if (!cp) 2689 return; 2690 2691 hci_dev_lock(hdev); 2692 2693 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle)); 2694 if (conn) { 2695 clear_bit(HCI_CONN_MODE_CHANGE_PEND, &conn->flags); 2696 2697 if (test_and_clear_bit(HCI_CONN_SCO_SETUP_PEND, &conn->flags)) 2698 hci_sco_setup(conn, status); 2699 } 2700 2701 hci_dev_unlock(hdev); 2702 } 2703 2704 static void hci_cs_disconnect(struct hci_dev *hdev, u8 status) 2705 { 2706 struct hci_cp_disconnect *cp; 2707 struct hci_conn_params *params; 2708 struct hci_conn *conn; 2709 bool mgmt_conn; 2710 2711 bt_dev_dbg(hdev, "status 0x%2.2x", status); 2712 2713 /* Wait for HCI_EV_DISCONN_COMPLETE if status 0x00 and not suspended 2714 * otherwise cleanup the connection immediately. 2715 */ 2716 if (!status && !hdev->suspended) 2717 return; 2718 2719 cp = hci_sent_cmd_data(hdev, HCI_OP_DISCONNECT); 2720 if (!cp) 2721 return; 2722 2723 hci_dev_lock(hdev); 2724 2725 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle)); 2726 if (!conn) 2727 goto unlock; 2728 2729 if (status) { 2730 mgmt_disconnect_failed(hdev, &conn->dst, conn->type, 2731 conn->dst_type, status); 2732 2733 if (conn->type == LE_LINK && conn->role == HCI_ROLE_SLAVE) { 2734 hdev->cur_adv_instance = conn->adv_instance; 2735 hci_enable_advertising(hdev); 2736 } 2737 2738 /* Inform sockets conn is gone before we delete it */ 2739 hci_disconn_cfm(conn, HCI_ERROR_UNSPECIFIED); 2740 2741 goto done; 2742 } 2743 2744 mgmt_conn = test_and_clear_bit(HCI_CONN_MGMT_CONNECTED, &conn->flags); 2745 2746 if (conn->type == ACL_LINK) { 2747 if (test_and_clear_bit(HCI_CONN_FLUSH_KEY, &conn->flags)) 2748 hci_remove_link_key(hdev, &conn->dst); 2749 } 2750 2751 params = hci_conn_params_lookup(hdev, &conn->dst, conn->dst_type); 2752 if (params) { 2753 switch (params->auto_connect) { 2754 case HCI_AUTO_CONN_LINK_LOSS: 2755 if (cp->reason != HCI_ERROR_CONNECTION_TIMEOUT) 2756 break; 2757 fallthrough; 2758 2759 case HCI_AUTO_CONN_DIRECT: 2760 case HCI_AUTO_CONN_ALWAYS: 2761 hci_pend_le_list_del_init(params); 2762 hci_pend_le_list_add(params, &hdev->pend_le_conns); 2763 break; 2764 2765 default: 2766 break; 2767 } 2768 } 2769 2770 mgmt_device_disconnected(hdev, &conn->dst, conn->type, conn->dst_type, 2771 cp->reason, mgmt_conn); 2772 2773 hci_disconn_cfm(conn, cp->reason); 2774 2775 done: 2776 /* If the disconnection failed for any reason, the upper layer 2777 * does not retry to disconnect in current implementation. 2778 * Hence, we need to do some basic cleanup here and re-enable 2779 * advertising if necessary. 2780 */ 2781 hci_conn_del(conn); 2782 unlock: 2783 hci_dev_unlock(hdev); 2784 } 2785 2786 static u8 ev_bdaddr_type(struct hci_dev *hdev, u8 type, bool *resolved) 2787 { 2788 /* When using controller based address resolution, then the new 2789 * address types 0x02 and 0x03 are used. These types need to be 2790 * converted back into either public address or random address type 2791 */ 2792 switch (type) { 2793 case ADDR_LE_DEV_PUBLIC_RESOLVED: 2794 if (resolved) 2795 *resolved = true; 2796 return ADDR_LE_DEV_PUBLIC; 2797 case ADDR_LE_DEV_RANDOM_RESOLVED: 2798 if (resolved) 2799 *resolved = true; 2800 return ADDR_LE_DEV_RANDOM; 2801 } 2802 2803 if (resolved) 2804 *resolved = false; 2805 return type; 2806 } 2807 2808 static void cs_le_create_conn(struct hci_dev *hdev, bdaddr_t *peer_addr, 2809 u8 peer_addr_type, u8 own_address_type, 2810 u8 filter_policy) 2811 { 2812 struct hci_conn *conn; 2813 2814 conn = hci_conn_hash_lookup_le(hdev, peer_addr, 2815 peer_addr_type); 2816 if (!conn) 2817 return; 2818 2819 own_address_type = ev_bdaddr_type(hdev, own_address_type, NULL); 2820 2821 /* Store the initiator and responder address information which 2822 * is needed for SMP. These values will not change during the 2823 * lifetime of the connection. 2824 */ 2825 conn->init_addr_type = own_address_type; 2826 if (own_address_type == ADDR_LE_DEV_RANDOM) 2827 bacpy(&conn->init_addr, &hdev->random_addr); 2828 else 2829 bacpy(&conn->init_addr, &hdev->bdaddr); 2830 2831 conn->resp_addr_type = peer_addr_type; 2832 bacpy(&conn->resp_addr, peer_addr); 2833 } 2834 2835 static void hci_cs_le_create_conn(struct hci_dev *hdev, u8 status) 2836 { 2837 struct hci_cp_le_create_conn *cp; 2838 2839 bt_dev_dbg(hdev, "status 0x%2.2x", status); 2840 2841 /* All connection failure handling is taken care of by the 2842 * hci_conn_failed function which is triggered by the HCI 2843 * request completion callbacks used for connecting. 2844 */ 2845 if (status) 2846 return; 2847 2848 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_CREATE_CONN); 2849 if (!cp) 2850 return; 2851 2852 hci_dev_lock(hdev); 2853 2854 cs_le_create_conn(hdev, &cp->peer_addr, cp->peer_addr_type, 2855 cp->own_address_type, cp->filter_policy); 2856 2857 hci_dev_unlock(hdev); 2858 } 2859 2860 static void hci_cs_le_ext_create_conn(struct hci_dev *hdev, u8 status) 2861 { 2862 struct hci_cp_le_ext_create_conn *cp; 2863 2864 bt_dev_dbg(hdev, "status 0x%2.2x", status); 2865 2866 /* All connection failure handling is taken care of by the 2867 * hci_conn_failed function which is triggered by the HCI 2868 * request completion callbacks used for connecting. 2869 */ 2870 if (status) 2871 return; 2872 2873 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_EXT_CREATE_CONN); 2874 if (!cp) 2875 return; 2876 2877 hci_dev_lock(hdev); 2878 2879 cs_le_create_conn(hdev, &cp->peer_addr, cp->peer_addr_type, 2880 cp->own_addr_type, cp->filter_policy); 2881 2882 hci_dev_unlock(hdev); 2883 } 2884 2885 static void hci_cs_le_read_remote_features(struct hci_dev *hdev, u8 status) 2886 { 2887 struct hci_cp_le_read_remote_features *cp; 2888 struct hci_conn *conn; 2889 2890 bt_dev_dbg(hdev, "status 0x%2.2x", status); 2891 2892 if (!status) 2893 return; 2894 2895 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_READ_REMOTE_FEATURES); 2896 if (!cp) 2897 return; 2898 2899 hci_dev_lock(hdev); 2900 2901 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle)); 2902 if (conn) { 2903 if (conn->state == BT_CONFIG) { 2904 hci_connect_cfm(conn, status); 2905 hci_conn_drop(conn); 2906 } 2907 } 2908 2909 hci_dev_unlock(hdev); 2910 } 2911 2912 static void hci_cs_le_start_enc(struct hci_dev *hdev, u8 status) 2913 { 2914 struct hci_cp_le_start_enc *cp; 2915 struct hci_conn *conn; 2916 2917 bt_dev_dbg(hdev, "status 0x%2.2x", status); 2918 2919 if (!status) 2920 return; 2921 2922 hci_dev_lock(hdev); 2923 2924 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_START_ENC); 2925 if (!cp) 2926 goto unlock; 2927 2928 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle)); 2929 if (!conn) 2930 goto unlock; 2931 2932 if (conn->state != BT_CONNECTED) 2933 goto unlock; 2934 2935 hci_disconnect(conn, HCI_ERROR_AUTH_FAILURE); 2936 hci_conn_drop(conn); 2937 2938 unlock: 2939 hci_dev_unlock(hdev); 2940 } 2941 2942 static void hci_cs_switch_role(struct hci_dev *hdev, u8 status) 2943 { 2944 struct hci_cp_switch_role *cp; 2945 struct hci_conn *conn; 2946 2947 BT_DBG("%s status 0x%2.2x", hdev->name, status); 2948 2949 if (!status) 2950 return; 2951 2952 cp = hci_sent_cmd_data(hdev, HCI_OP_SWITCH_ROLE); 2953 if (!cp) 2954 return; 2955 2956 hci_dev_lock(hdev); 2957 2958 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &cp->bdaddr); 2959 if (conn) 2960 clear_bit(HCI_CONN_RSWITCH_PEND, &conn->flags); 2961 2962 hci_dev_unlock(hdev); 2963 } 2964 2965 static void hci_inquiry_complete_evt(struct hci_dev *hdev, void *data, 2966 struct sk_buff *skb) 2967 { 2968 struct hci_ev_status *ev = data; 2969 struct discovery_state *discov = &hdev->discovery; 2970 struct inquiry_entry *e; 2971 2972 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 2973 2974 if (!test_and_clear_bit(HCI_INQUIRY, &hdev->flags)) 2975 return; 2976 2977 smp_mb__after_atomic(); /* wake_up_bit advises about this barrier */ 2978 wake_up_bit(&hdev->flags, HCI_INQUIRY); 2979 2980 if (!hci_dev_test_flag(hdev, HCI_MGMT)) 2981 return; 2982 2983 hci_dev_lock(hdev); 2984 2985 if (discov->state != DISCOVERY_FINDING) 2986 goto unlock; 2987 2988 if (list_empty(&discov->resolve)) { 2989 /* When BR/EDR inquiry is active and no LE scanning is in 2990 * progress, then change discovery state to indicate completion. 2991 * 2992 * When running LE scanning and BR/EDR inquiry simultaneously 2993 * and the LE scan already finished, then change the discovery 2994 * state to indicate completion. 2995 */ 2996 if (!hci_dev_test_flag(hdev, HCI_LE_SCAN) || 2997 !test_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks)) 2998 hci_discovery_set_state(hdev, DISCOVERY_STOPPED); 2999 goto unlock; 3000 } 3001 3002 e = hci_inquiry_cache_lookup_resolve(hdev, BDADDR_ANY, NAME_NEEDED); 3003 if (e && hci_resolve_name(hdev, e) == 0) { 3004 e->name_state = NAME_PENDING; 3005 hci_discovery_set_state(hdev, DISCOVERY_RESOLVING); 3006 discov->name_resolve_timeout = jiffies + NAME_RESOLVE_DURATION; 3007 } else { 3008 /* When BR/EDR inquiry is active and no LE scanning is in 3009 * progress, then change discovery state to indicate completion. 3010 * 3011 * When running LE scanning and BR/EDR inquiry simultaneously 3012 * and the LE scan already finished, then change the discovery 3013 * state to indicate completion. 3014 */ 3015 if (!hci_dev_test_flag(hdev, HCI_LE_SCAN) || 3016 !test_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks)) 3017 hci_discovery_set_state(hdev, DISCOVERY_STOPPED); 3018 } 3019 3020 unlock: 3021 hci_dev_unlock(hdev); 3022 } 3023 3024 static void hci_inquiry_result_evt(struct hci_dev *hdev, void *edata, 3025 struct sk_buff *skb) 3026 { 3027 struct hci_ev_inquiry_result *ev = edata; 3028 struct inquiry_data data; 3029 int i; 3030 3031 if (!hci_ev_skb_pull(hdev, skb, HCI_EV_INQUIRY_RESULT, 3032 flex_array_size(ev, info, ev->num))) 3033 return; 3034 3035 bt_dev_dbg(hdev, "num %d", ev->num); 3036 3037 if (!ev->num) 3038 return; 3039 3040 if (hci_dev_test_flag(hdev, HCI_PERIODIC_INQ)) 3041 return; 3042 3043 hci_dev_lock(hdev); 3044 3045 for (i = 0; i < ev->num; i++) { 3046 struct inquiry_info *info = &ev->info[i]; 3047 u32 flags; 3048 3049 bacpy(&data.bdaddr, &info->bdaddr); 3050 data.pscan_rep_mode = info->pscan_rep_mode; 3051 data.pscan_period_mode = info->pscan_period_mode; 3052 data.pscan_mode = info->pscan_mode; 3053 memcpy(data.dev_class, info->dev_class, 3); 3054 data.clock_offset = info->clock_offset; 3055 data.rssi = HCI_RSSI_INVALID; 3056 data.ssp_mode = 0x00; 3057 3058 flags = hci_inquiry_cache_update(hdev, &data, false); 3059 3060 mgmt_device_found(hdev, &info->bdaddr, ACL_LINK, 0x00, 3061 info->dev_class, HCI_RSSI_INVALID, 3062 flags, NULL, 0, NULL, 0, 0); 3063 } 3064 3065 hci_dev_unlock(hdev); 3066 } 3067 3068 static void hci_conn_complete_evt(struct hci_dev *hdev, void *data, 3069 struct sk_buff *skb) 3070 { 3071 struct hci_ev_conn_complete *ev = data; 3072 struct hci_conn *conn; 3073 u8 status = ev->status; 3074 3075 bt_dev_dbg(hdev, "status 0x%2.2x", status); 3076 3077 hci_dev_lock(hdev); 3078 3079 conn = hci_conn_hash_lookup_ba(hdev, ev->link_type, &ev->bdaddr); 3080 if (!conn) { 3081 /* In case of error status and there is no connection pending 3082 * just unlock as there is nothing to cleanup. 3083 */ 3084 if (ev->status) 3085 goto unlock; 3086 3087 /* Connection may not exist if auto-connected. Check the bredr 3088 * allowlist to see if this device is allowed to auto connect. 3089 * If link is an ACL type, create a connection class 3090 * automatically. 3091 * 3092 * Auto-connect will only occur if the event filter is 3093 * programmed with a given address. Right now, event filter is 3094 * only used during suspend. 3095 */ 3096 if (ev->link_type == ACL_LINK && 3097 hci_bdaddr_list_lookup_with_flags(&hdev->accept_list, 3098 &ev->bdaddr, 3099 BDADDR_BREDR)) { 3100 conn = hci_conn_add_unset(hdev, ev->link_type, 3101 &ev->bdaddr, HCI_ROLE_SLAVE); 3102 if (IS_ERR(conn)) { 3103 bt_dev_err(hdev, "connection err: %ld", PTR_ERR(conn)); 3104 goto unlock; 3105 } 3106 } else { 3107 if (ev->link_type != SCO_LINK) 3108 goto unlock; 3109 3110 conn = hci_conn_hash_lookup_ba(hdev, ESCO_LINK, 3111 &ev->bdaddr); 3112 if (!conn) 3113 goto unlock; 3114 3115 conn->type = SCO_LINK; 3116 } 3117 } 3118 3119 /* The HCI_Connection_Complete event is only sent once per connection. 3120 * Processing it more than once per connection can corrupt kernel memory. 3121 * 3122 * As the connection handle is set here for the first time, it indicates 3123 * whether the connection is already set up. 3124 */ 3125 if (!HCI_CONN_HANDLE_UNSET(conn->handle)) { 3126 bt_dev_err(hdev, "Ignoring HCI_Connection_Complete for existing connection"); 3127 goto unlock; 3128 } 3129 3130 if (!status) { 3131 status = hci_conn_set_handle(conn, __le16_to_cpu(ev->handle)); 3132 if (status) 3133 goto done; 3134 3135 if (conn->type == ACL_LINK) { 3136 conn->state = BT_CONFIG; 3137 hci_conn_hold(conn); 3138 3139 if (!conn->out && !hci_conn_ssp_enabled(conn) && 3140 !hci_find_link_key(hdev, &ev->bdaddr)) 3141 conn->disc_timeout = HCI_PAIRING_TIMEOUT; 3142 else 3143 conn->disc_timeout = HCI_DISCONN_TIMEOUT; 3144 } else 3145 conn->state = BT_CONNECTED; 3146 3147 hci_debugfs_create_conn(conn); 3148 hci_conn_add_sysfs(conn); 3149 3150 if (test_bit(HCI_AUTH, &hdev->flags)) 3151 set_bit(HCI_CONN_AUTH, &conn->flags); 3152 3153 if (test_bit(HCI_ENCRYPT, &hdev->flags)) 3154 set_bit(HCI_CONN_ENCRYPT, &conn->flags); 3155 3156 /* "Link key request" completed ahead of "connect request" completes */ 3157 if (ev->encr_mode == 1 && !test_bit(HCI_CONN_ENCRYPT, &conn->flags) && 3158 ev->link_type == ACL_LINK) { 3159 struct link_key *key; 3160 struct hci_cp_read_enc_key_size cp; 3161 3162 key = hci_find_link_key(hdev, &ev->bdaddr); 3163 if (key) { 3164 set_bit(HCI_CONN_ENCRYPT, &conn->flags); 3165 3166 if (!read_key_size_capable(hdev)) { 3167 conn->enc_key_size = HCI_LINK_KEY_SIZE; 3168 } else { 3169 cp.handle = cpu_to_le16(conn->handle); 3170 if (hci_send_cmd(hdev, HCI_OP_READ_ENC_KEY_SIZE, 3171 sizeof(cp), &cp)) { 3172 bt_dev_err(hdev, "sending read key size failed"); 3173 conn->enc_key_size = HCI_LINK_KEY_SIZE; 3174 } 3175 } 3176 3177 hci_encrypt_cfm(conn, ev->status); 3178 } 3179 } 3180 3181 /* Get remote features */ 3182 if (conn->type == ACL_LINK) { 3183 struct hci_cp_read_remote_features cp; 3184 cp.handle = ev->handle; 3185 hci_send_cmd(hdev, HCI_OP_READ_REMOTE_FEATURES, 3186 sizeof(cp), &cp); 3187 3188 hci_update_scan(hdev); 3189 } 3190 3191 /* Set packet type for incoming connection */ 3192 if (!conn->out && hdev->hci_ver < BLUETOOTH_VER_2_0) { 3193 struct hci_cp_change_conn_ptype cp; 3194 cp.handle = ev->handle; 3195 cp.pkt_type = cpu_to_le16(conn->pkt_type); 3196 hci_send_cmd(hdev, HCI_OP_CHANGE_CONN_PTYPE, sizeof(cp), 3197 &cp); 3198 } 3199 } 3200 3201 if (conn->type == ACL_LINK) 3202 hci_sco_setup(conn, ev->status); 3203 3204 done: 3205 if (status) { 3206 hci_conn_failed(conn, status); 3207 } else if (ev->link_type == SCO_LINK) { 3208 switch (conn->setting & SCO_AIRMODE_MASK) { 3209 case SCO_AIRMODE_CVSD: 3210 if (hdev->notify) 3211 hdev->notify(hdev, HCI_NOTIFY_ENABLE_SCO_CVSD); 3212 break; 3213 } 3214 3215 hci_connect_cfm(conn, status); 3216 } 3217 3218 unlock: 3219 hci_dev_unlock(hdev); 3220 } 3221 3222 static void hci_reject_conn(struct hci_dev *hdev, bdaddr_t *bdaddr) 3223 { 3224 struct hci_cp_reject_conn_req cp; 3225 3226 bacpy(&cp.bdaddr, bdaddr); 3227 cp.reason = HCI_ERROR_REJ_BAD_ADDR; 3228 hci_send_cmd(hdev, HCI_OP_REJECT_CONN_REQ, sizeof(cp), &cp); 3229 } 3230 3231 static void hci_conn_request_evt(struct hci_dev *hdev, void *data, 3232 struct sk_buff *skb) 3233 { 3234 struct hci_ev_conn_request *ev = data; 3235 int mask = hdev->link_mode; 3236 struct inquiry_entry *ie; 3237 struct hci_conn *conn; 3238 __u8 flags = 0; 3239 3240 bt_dev_dbg(hdev, "bdaddr %pMR type 0x%x", &ev->bdaddr, ev->link_type); 3241 3242 /* Reject incoming connection from device with same BD ADDR against 3243 * CVE-2020-26555 3244 */ 3245 if (hdev && !bacmp(&hdev->bdaddr, &ev->bdaddr)) { 3246 bt_dev_dbg(hdev, "Reject connection with same BD_ADDR %pMR\n", 3247 &ev->bdaddr); 3248 hci_reject_conn(hdev, &ev->bdaddr); 3249 return; 3250 } 3251 3252 mask |= hci_proto_connect_ind(hdev, &ev->bdaddr, ev->link_type, 3253 &flags); 3254 3255 if (!(mask & HCI_LM_ACCEPT)) { 3256 hci_reject_conn(hdev, &ev->bdaddr); 3257 return; 3258 } 3259 3260 hci_dev_lock(hdev); 3261 3262 if (hci_bdaddr_list_lookup(&hdev->reject_list, &ev->bdaddr, 3263 BDADDR_BREDR)) { 3264 hci_reject_conn(hdev, &ev->bdaddr); 3265 goto unlock; 3266 } 3267 3268 /* Require HCI_CONNECTABLE or an accept list entry to accept the 3269 * connection. These features are only touched through mgmt so 3270 * only do the checks if HCI_MGMT is set. 3271 */ 3272 if (hci_dev_test_flag(hdev, HCI_MGMT) && 3273 !hci_dev_test_flag(hdev, HCI_CONNECTABLE) && 3274 !hci_bdaddr_list_lookup_with_flags(&hdev->accept_list, &ev->bdaddr, 3275 BDADDR_BREDR)) { 3276 hci_reject_conn(hdev, &ev->bdaddr); 3277 goto unlock; 3278 } 3279 3280 /* Connection accepted */ 3281 3282 ie = hci_inquiry_cache_lookup(hdev, &ev->bdaddr); 3283 if (ie) 3284 memcpy(ie->data.dev_class, ev->dev_class, 3); 3285 3286 conn = hci_conn_hash_lookup_ba(hdev, ev->link_type, 3287 &ev->bdaddr); 3288 if (!conn) { 3289 conn = hci_conn_add_unset(hdev, ev->link_type, &ev->bdaddr, 3290 HCI_ROLE_SLAVE); 3291 if (IS_ERR(conn)) { 3292 bt_dev_err(hdev, "connection err: %ld", PTR_ERR(conn)); 3293 goto unlock; 3294 } 3295 } 3296 3297 memcpy(conn->dev_class, ev->dev_class, 3); 3298 3299 hci_dev_unlock(hdev); 3300 3301 if (ev->link_type == ACL_LINK || 3302 (!(flags & HCI_PROTO_DEFER) && !lmp_esco_capable(hdev))) { 3303 struct hci_cp_accept_conn_req cp; 3304 conn->state = BT_CONNECT; 3305 3306 bacpy(&cp.bdaddr, &ev->bdaddr); 3307 3308 if (lmp_rswitch_capable(hdev) && (mask & HCI_LM_MASTER)) 3309 cp.role = 0x00; /* Become central */ 3310 else 3311 cp.role = 0x01; /* Remain peripheral */ 3312 3313 hci_send_cmd(hdev, HCI_OP_ACCEPT_CONN_REQ, sizeof(cp), &cp); 3314 } else if (!(flags & HCI_PROTO_DEFER)) { 3315 struct hci_cp_accept_sync_conn_req cp; 3316 conn->state = BT_CONNECT; 3317 3318 bacpy(&cp.bdaddr, &ev->bdaddr); 3319 cp.pkt_type = cpu_to_le16(conn->pkt_type); 3320 3321 cp.tx_bandwidth = cpu_to_le32(0x00001f40); 3322 cp.rx_bandwidth = cpu_to_le32(0x00001f40); 3323 cp.max_latency = cpu_to_le16(0xffff); 3324 cp.content_format = cpu_to_le16(hdev->voice_setting); 3325 cp.retrans_effort = 0xff; 3326 3327 hci_send_cmd(hdev, HCI_OP_ACCEPT_SYNC_CONN_REQ, sizeof(cp), 3328 &cp); 3329 } else { 3330 conn->state = BT_CONNECT2; 3331 hci_connect_cfm(conn, 0); 3332 } 3333 3334 return; 3335 unlock: 3336 hci_dev_unlock(hdev); 3337 } 3338 3339 static u8 hci_to_mgmt_reason(u8 err) 3340 { 3341 switch (err) { 3342 case HCI_ERROR_CONNECTION_TIMEOUT: 3343 return MGMT_DEV_DISCONN_TIMEOUT; 3344 case HCI_ERROR_REMOTE_USER_TERM: 3345 case HCI_ERROR_REMOTE_LOW_RESOURCES: 3346 case HCI_ERROR_REMOTE_POWER_OFF: 3347 return MGMT_DEV_DISCONN_REMOTE; 3348 case HCI_ERROR_LOCAL_HOST_TERM: 3349 return MGMT_DEV_DISCONN_LOCAL_HOST; 3350 default: 3351 return MGMT_DEV_DISCONN_UNKNOWN; 3352 } 3353 } 3354 3355 static void hci_disconn_complete_evt(struct hci_dev *hdev, void *data, 3356 struct sk_buff *skb) 3357 { 3358 struct hci_ev_disconn_complete *ev = data; 3359 u8 reason; 3360 struct hci_conn_params *params; 3361 struct hci_conn *conn; 3362 bool mgmt_connected; 3363 3364 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 3365 3366 hci_dev_lock(hdev); 3367 3368 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle)); 3369 if (!conn) 3370 goto unlock; 3371 3372 if (ev->status) { 3373 mgmt_disconnect_failed(hdev, &conn->dst, conn->type, 3374 conn->dst_type, ev->status); 3375 goto unlock; 3376 } 3377 3378 conn->state = BT_CLOSED; 3379 3380 mgmt_connected = test_and_clear_bit(HCI_CONN_MGMT_CONNECTED, &conn->flags); 3381 3382 if (test_bit(HCI_CONN_AUTH_FAILURE, &conn->flags)) 3383 reason = MGMT_DEV_DISCONN_AUTH_FAILURE; 3384 else 3385 reason = hci_to_mgmt_reason(ev->reason); 3386 3387 mgmt_device_disconnected(hdev, &conn->dst, conn->type, conn->dst_type, 3388 reason, mgmt_connected); 3389 3390 if (conn->type == ACL_LINK) { 3391 if (test_and_clear_bit(HCI_CONN_FLUSH_KEY, &conn->flags)) 3392 hci_remove_link_key(hdev, &conn->dst); 3393 3394 hci_update_scan(hdev); 3395 } 3396 3397 /* Re-enable passive scanning if disconnected device is marked 3398 * as auto-connectable. 3399 */ 3400 if (conn->type == LE_LINK) { 3401 params = hci_conn_params_lookup(hdev, &conn->dst, 3402 conn->dst_type); 3403 if (params) { 3404 switch (params->auto_connect) { 3405 case HCI_AUTO_CONN_LINK_LOSS: 3406 if (ev->reason != HCI_ERROR_CONNECTION_TIMEOUT) 3407 break; 3408 fallthrough; 3409 3410 case HCI_AUTO_CONN_DIRECT: 3411 case HCI_AUTO_CONN_ALWAYS: 3412 hci_pend_le_list_del_init(params); 3413 hci_pend_le_list_add(params, 3414 &hdev->pend_le_conns); 3415 hci_update_passive_scan(hdev); 3416 break; 3417 3418 default: 3419 break; 3420 } 3421 } 3422 } 3423 3424 hci_disconn_cfm(conn, ev->reason); 3425 3426 /* Re-enable advertising if necessary, since it might 3427 * have been disabled by the connection. From the 3428 * HCI_LE_Set_Advertise_Enable command description in 3429 * the core specification (v4.0): 3430 * "The Controller shall continue advertising until the Host 3431 * issues an LE_Set_Advertise_Enable command with 3432 * Advertising_Enable set to 0x00 (Advertising is disabled) 3433 * or until a connection is created or until the Advertising 3434 * is timed out due to Directed Advertising." 3435 */ 3436 if (conn->type == LE_LINK && conn->role == HCI_ROLE_SLAVE) { 3437 hdev->cur_adv_instance = conn->adv_instance; 3438 hci_enable_advertising(hdev); 3439 } 3440 3441 hci_conn_del(conn); 3442 3443 unlock: 3444 hci_dev_unlock(hdev); 3445 } 3446 3447 static void hci_auth_complete_evt(struct hci_dev *hdev, void *data, 3448 struct sk_buff *skb) 3449 { 3450 struct hci_ev_auth_complete *ev = data; 3451 struct hci_conn *conn; 3452 3453 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 3454 3455 hci_dev_lock(hdev); 3456 3457 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle)); 3458 if (!conn) 3459 goto unlock; 3460 3461 if (!ev->status) { 3462 clear_bit(HCI_CONN_AUTH_FAILURE, &conn->flags); 3463 set_bit(HCI_CONN_AUTH, &conn->flags); 3464 conn->sec_level = conn->pending_sec_level; 3465 } else { 3466 if (ev->status == HCI_ERROR_PIN_OR_KEY_MISSING) 3467 set_bit(HCI_CONN_AUTH_FAILURE, &conn->flags); 3468 3469 mgmt_auth_failed(conn, ev->status); 3470 } 3471 3472 clear_bit(HCI_CONN_AUTH_PEND, &conn->flags); 3473 3474 if (conn->state == BT_CONFIG) { 3475 if (!ev->status && hci_conn_ssp_enabled(conn)) { 3476 struct hci_cp_set_conn_encrypt cp; 3477 cp.handle = ev->handle; 3478 cp.encrypt = 0x01; 3479 hci_send_cmd(hdev, HCI_OP_SET_CONN_ENCRYPT, sizeof(cp), 3480 &cp); 3481 } else { 3482 conn->state = BT_CONNECTED; 3483 hci_connect_cfm(conn, ev->status); 3484 hci_conn_drop(conn); 3485 } 3486 } else { 3487 hci_auth_cfm(conn, ev->status); 3488 3489 hci_conn_hold(conn); 3490 conn->disc_timeout = HCI_DISCONN_TIMEOUT; 3491 hci_conn_drop(conn); 3492 } 3493 3494 if (test_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags)) { 3495 if (!ev->status) { 3496 struct hci_cp_set_conn_encrypt cp; 3497 cp.handle = ev->handle; 3498 cp.encrypt = 0x01; 3499 hci_send_cmd(hdev, HCI_OP_SET_CONN_ENCRYPT, sizeof(cp), 3500 &cp); 3501 } else { 3502 clear_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags); 3503 hci_encrypt_cfm(conn, ev->status); 3504 } 3505 } 3506 3507 unlock: 3508 hci_dev_unlock(hdev); 3509 } 3510 3511 static void hci_remote_name_evt(struct hci_dev *hdev, void *data, 3512 struct sk_buff *skb) 3513 { 3514 struct hci_ev_remote_name *ev = data; 3515 struct hci_conn *conn; 3516 3517 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 3518 3519 hci_dev_lock(hdev); 3520 3521 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr); 3522 3523 if (!hci_dev_test_flag(hdev, HCI_MGMT)) 3524 goto check_auth; 3525 3526 if (ev->status == 0) 3527 hci_check_pending_name(hdev, conn, &ev->bdaddr, ev->name, 3528 strnlen(ev->name, HCI_MAX_NAME_LENGTH)); 3529 else 3530 hci_check_pending_name(hdev, conn, &ev->bdaddr, NULL, 0); 3531 3532 check_auth: 3533 if (!conn) 3534 goto unlock; 3535 3536 if (!hci_outgoing_auth_needed(hdev, conn)) 3537 goto unlock; 3538 3539 if (!test_and_set_bit(HCI_CONN_AUTH_PEND, &conn->flags)) { 3540 struct hci_cp_auth_requested cp; 3541 3542 set_bit(HCI_CONN_AUTH_INITIATOR, &conn->flags); 3543 3544 cp.handle = __cpu_to_le16(conn->handle); 3545 hci_send_cmd(hdev, HCI_OP_AUTH_REQUESTED, sizeof(cp), &cp); 3546 } 3547 3548 unlock: 3549 hci_dev_unlock(hdev); 3550 } 3551 3552 static void hci_encrypt_change_evt(struct hci_dev *hdev, void *data, 3553 struct sk_buff *skb) 3554 { 3555 struct hci_ev_encrypt_change *ev = data; 3556 struct hci_conn *conn; 3557 3558 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 3559 3560 hci_dev_lock(hdev); 3561 3562 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle)); 3563 if (!conn) 3564 goto unlock; 3565 3566 if (!ev->status) { 3567 if (ev->encrypt) { 3568 /* Encryption implies authentication */ 3569 set_bit(HCI_CONN_AUTH, &conn->flags); 3570 set_bit(HCI_CONN_ENCRYPT, &conn->flags); 3571 conn->sec_level = conn->pending_sec_level; 3572 3573 /* P-256 authentication key implies FIPS */ 3574 if (conn->key_type == HCI_LK_AUTH_COMBINATION_P256) 3575 set_bit(HCI_CONN_FIPS, &conn->flags); 3576 3577 if ((conn->type == ACL_LINK && ev->encrypt == 0x02) || 3578 conn->type == LE_LINK) 3579 set_bit(HCI_CONN_AES_CCM, &conn->flags); 3580 } else { 3581 clear_bit(HCI_CONN_ENCRYPT, &conn->flags); 3582 clear_bit(HCI_CONN_AES_CCM, &conn->flags); 3583 } 3584 } 3585 3586 /* We should disregard the current RPA and generate a new one 3587 * whenever the encryption procedure fails. 3588 */ 3589 if (ev->status && conn->type == LE_LINK) { 3590 hci_dev_set_flag(hdev, HCI_RPA_EXPIRED); 3591 hci_adv_instances_set_rpa_expired(hdev, true); 3592 } 3593 3594 clear_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags); 3595 3596 /* Check link security requirements are met */ 3597 if (!hci_conn_check_link_mode(conn)) 3598 ev->status = HCI_ERROR_AUTH_FAILURE; 3599 3600 if (ev->status && conn->state == BT_CONNECTED) { 3601 if (ev->status == HCI_ERROR_PIN_OR_KEY_MISSING) 3602 set_bit(HCI_CONN_AUTH_FAILURE, &conn->flags); 3603 3604 /* Notify upper layers so they can cleanup before 3605 * disconnecting. 3606 */ 3607 hci_encrypt_cfm(conn, ev->status); 3608 hci_disconnect(conn, HCI_ERROR_AUTH_FAILURE); 3609 hci_conn_drop(conn); 3610 goto unlock; 3611 } 3612 3613 /* Try reading the encryption key size for encrypted ACL links */ 3614 if (!ev->status && ev->encrypt && conn->type == ACL_LINK) { 3615 struct hci_cp_read_enc_key_size cp; 3616 3617 /* Only send HCI_Read_Encryption_Key_Size if the 3618 * controller really supports it. If it doesn't, assume 3619 * the default size (16). 3620 */ 3621 if (!read_key_size_capable(hdev)) { 3622 conn->enc_key_size = HCI_LINK_KEY_SIZE; 3623 goto notify; 3624 } 3625 3626 cp.handle = cpu_to_le16(conn->handle); 3627 if (hci_send_cmd(hdev, HCI_OP_READ_ENC_KEY_SIZE, 3628 sizeof(cp), &cp)) { 3629 bt_dev_err(hdev, "sending read key size failed"); 3630 conn->enc_key_size = HCI_LINK_KEY_SIZE; 3631 goto notify; 3632 } 3633 3634 goto unlock; 3635 } 3636 3637 /* We skip the WRITE_AUTH_PAYLOAD_TIMEOUT for ATS2851 based controllers 3638 * to avoid unexpected SMP command errors when pairing. 3639 */ 3640 if (test_bit(HCI_QUIRK_BROKEN_WRITE_AUTH_PAYLOAD_TIMEOUT, 3641 &hdev->quirks)) 3642 goto notify; 3643 3644 /* Set the default Authenticated Payload Timeout after 3645 * an LE Link is established. As per Core Spec v5.0, Vol 2, Part B 3646 * Section 3.3, the HCI command WRITE_AUTH_PAYLOAD_TIMEOUT should be 3647 * sent when the link is active and Encryption is enabled, the conn 3648 * type can be either LE or ACL and controller must support LMP Ping. 3649 * Ensure for AES-CCM encryption as well. 3650 */ 3651 if (test_bit(HCI_CONN_ENCRYPT, &conn->flags) && 3652 test_bit(HCI_CONN_AES_CCM, &conn->flags) && 3653 ((conn->type == ACL_LINK && lmp_ping_capable(hdev)) || 3654 (conn->type == LE_LINK && (hdev->le_features[0] & HCI_LE_PING)))) { 3655 struct hci_cp_write_auth_payload_to cp; 3656 3657 cp.handle = cpu_to_le16(conn->handle); 3658 cp.timeout = cpu_to_le16(hdev->auth_payload_timeout); 3659 if (hci_send_cmd(conn->hdev, HCI_OP_WRITE_AUTH_PAYLOAD_TO, 3660 sizeof(cp), &cp)) 3661 bt_dev_err(hdev, "write auth payload timeout failed"); 3662 } 3663 3664 notify: 3665 hci_encrypt_cfm(conn, ev->status); 3666 3667 unlock: 3668 hci_dev_unlock(hdev); 3669 } 3670 3671 static void hci_change_link_key_complete_evt(struct hci_dev *hdev, void *data, 3672 struct sk_buff *skb) 3673 { 3674 struct hci_ev_change_link_key_complete *ev = data; 3675 struct hci_conn *conn; 3676 3677 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 3678 3679 hci_dev_lock(hdev); 3680 3681 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle)); 3682 if (conn) { 3683 if (!ev->status) 3684 set_bit(HCI_CONN_SECURE, &conn->flags); 3685 3686 clear_bit(HCI_CONN_AUTH_PEND, &conn->flags); 3687 3688 hci_key_change_cfm(conn, ev->status); 3689 } 3690 3691 hci_dev_unlock(hdev); 3692 } 3693 3694 static void hci_remote_features_evt(struct hci_dev *hdev, void *data, 3695 struct sk_buff *skb) 3696 { 3697 struct hci_ev_remote_features *ev = data; 3698 struct hci_conn *conn; 3699 3700 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 3701 3702 hci_dev_lock(hdev); 3703 3704 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle)); 3705 if (!conn) 3706 goto unlock; 3707 3708 if (!ev->status) 3709 memcpy(conn->features[0], ev->features, 8); 3710 3711 if (conn->state != BT_CONFIG) 3712 goto unlock; 3713 3714 if (!ev->status && lmp_ext_feat_capable(hdev) && 3715 lmp_ext_feat_capable(conn)) { 3716 struct hci_cp_read_remote_ext_features cp; 3717 cp.handle = ev->handle; 3718 cp.page = 0x01; 3719 hci_send_cmd(hdev, HCI_OP_READ_REMOTE_EXT_FEATURES, 3720 sizeof(cp), &cp); 3721 goto unlock; 3722 } 3723 3724 if (!ev->status) { 3725 struct hci_cp_remote_name_req cp; 3726 memset(&cp, 0, sizeof(cp)); 3727 bacpy(&cp.bdaddr, &conn->dst); 3728 cp.pscan_rep_mode = 0x02; 3729 hci_send_cmd(hdev, HCI_OP_REMOTE_NAME_REQ, sizeof(cp), &cp); 3730 } else { 3731 mgmt_device_connected(hdev, conn, NULL, 0); 3732 } 3733 3734 if (!hci_outgoing_auth_needed(hdev, conn)) { 3735 conn->state = BT_CONNECTED; 3736 hci_connect_cfm(conn, ev->status); 3737 hci_conn_drop(conn); 3738 } 3739 3740 unlock: 3741 hci_dev_unlock(hdev); 3742 } 3743 3744 static inline void handle_cmd_cnt_and_timer(struct hci_dev *hdev, u8 ncmd) 3745 { 3746 cancel_delayed_work(&hdev->cmd_timer); 3747 3748 rcu_read_lock(); 3749 if (!test_bit(HCI_RESET, &hdev->flags)) { 3750 if (ncmd) { 3751 cancel_delayed_work(&hdev->ncmd_timer); 3752 atomic_set(&hdev->cmd_cnt, 1); 3753 } else { 3754 if (!hci_dev_test_flag(hdev, HCI_CMD_DRAIN_WORKQUEUE)) 3755 queue_delayed_work(hdev->workqueue, &hdev->ncmd_timer, 3756 HCI_NCMD_TIMEOUT); 3757 } 3758 } 3759 rcu_read_unlock(); 3760 } 3761 3762 static u8 hci_cc_le_read_buffer_size_v2(struct hci_dev *hdev, void *data, 3763 struct sk_buff *skb) 3764 { 3765 struct hci_rp_le_read_buffer_size_v2 *rp = data; 3766 3767 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 3768 3769 if (rp->status) 3770 return rp->status; 3771 3772 hdev->le_mtu = __le16_to_cpu(rp->acl_mtu); 3773 hdev->le_pkts = rp->acl_max_pkt; 3774 hdev->iso_mtu = __le16_to_cpu(rp->iso_mtu); 3775 hdev->iso_pkts = rp->iso_max_pkt; 3776 3777 hdev->le_cnt = hdev->le_pkts; 3778 hdev->iso_cnt = hdev->iso_pkts; 3779 3780 BT_DBG("%s acl mtu %d:%d iso mtu %d:%d", hdev->name, hdev->acl_mtu, 3781 hdev->acl_pkts, hdev->iso_mtu, hdev->iso_pkts); 3782 3783 if (hdev->le_mtu && hdev->le_mtu < HCI_MIN_LE_MTU) 3784 return HCI_ERROR_INVALID_PARAMETERS; 3785 3786 return rp->status; 3787 } 3788 3789 static void hci_unbound_cis_failed(struct hci_dev *hdev, u8 cig, u8 status) 3790 { 3791 struct hci_conn *conn, *tmp; 3792 3793 lockdep_assert_held(&hdev->lock); 3794 3795 list_for_each_entry_safe(conn, tmp, &hdev->conn_hash.list, list) { 3796 if (conn->type != ISO_LINK || !bacmp(&conn->dst, BDADDR_ANY) || 3797 conn->state == BT_OPEN || conn->iso_qos.ucast.cig != cig) 3798 continue; 3799 3800 if (HCI_CONN_HANDLE_UNSET(conn->handle)) 3801 hci_conn_failed(conn, status); 3802 } 3803 } 3804 3805 static u8 hci_cc_le_set_cig_params(struct hci_dev *hdev, void *data, 3806 struct sk_buff *skb) 3807 { 3808 struct hci_rp_le_set_cig_params *rp = data; 3809 struct hci_cp_le_set_cig_params *cp; 3810 struct hci_conn *conn; 3811 u8 status = rp->status; 3812 bool pending = false; 3813 int i; 3814 3815 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 3816 3817 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_CIG_PARAMS); 3818 if (!rp->status && (!cp || rp->num_handles != cp->num_cis || 3819 rp->cig_id != cp->cig_id)) { 3820 bt_dev_err(hdev, "unexpected Set CIG Parameters response data"); 3821 status = HCI_ERROR_UNSPECIFIED; 3822 } 3823 3824 hci_dev_lock(hdev); 3825 3826 /* BLUETOOTH CORE SPECIFICATION Version 5.4 | Vol 4, Part E page 2554 3827 * 3828 * If the Status return parameter is non-zero, then the state of the CIG 3829 * and its CIS configurations shall not be changed by the command. If 3830 * the CIG did not already exist, it shall not be created. 3831 */ 3832 if (status) { 3833 /* Keep current configuration, fail only the unbound CIS */ 3834 hci_unbound_cis_failed(hdev, rp->cig_id, status); 3835 goto unlock; 3836 } 3837 3838 /* BLUETOOTH CORE SPECIFICATION Version 5.3 | Vol 4, Part E page 2553 3839 * 3840 * If the Status return parameter is zero, then the Controller shall 3841 * set the Connection_Handle arrayed return parameter to the connection 3842 * handle(s) corresponding to the CIS configurations specified in 3843 * the CIS_IDs command parameter, in the same order. 3844 */ 3845 for (i = 0; i < rp->num_handles; ++i) { 3846 conn = hci_conn_hash_lookup_cis(hdev, NULL, 0, rp->cig_id, 3847 cp->cis[i].cis_id); 3848 if (!conn || !bacmp(&conn->dst, BDADDR_ANY)) 3849 continue; 3850 3851 if (conn->state != BT_BOUND && conn->state != BT_CONNECT) 3852 continue; 3853 3854 if (hci_conn_set_handle(conn, __le16_to_cpu(rp->handle[i]))) 3855 continue; 3856 3857 if (conn->state == BT_CONNECT) 3858 pending = true; 3859 } 3860 3861 unlock: 3862 if (pending) 3863 hci_le_create_cis_pending(hdev); 3864 3865 hci_dev_unlock(hdev); 3866 3867 return rp->status; 3868 } 3869 3870 static u8 hci_cc_le_setup_iso_path(struct hci_dev *hdev, void *data, 3871 struct sk_buff *skb) 3872 { 3873 struct hci_rp_le_setup_iso_path *rp = data; 3874 struct hci_cp_le_setup_iso_path *cp; 3875 struct hci_conn *conn; 3876 3877 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 3878 3879 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SETUP_ISO_PATH); 3880 if (!cp) 3881 return rp->status; 3882 3883 hci_dev_lock(hdev); 3884 3885 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle)); 3886 if (!conn) 3887 goto unlock; 3888 3889 if (rp->status) { 3890 hci_connect_cfm(conn, rp->status); 3891 hci_conn_del(conn); 3892 goto unlock; 3893 } 3894 3895 switch (cp->direction) { 3896 /* Input (Host to Controller) */ 3897 case 0x00: 3898 /* Only confirm connection if output only */ 3899 if (conn->iso_qos.ucast.out.sdu && !conn->iso_qos.ucast.in.sdu) 3900 hci_connect_cfm(conn, rp->status); 3901 break; 3902 /* Output (Controller to Host) */ 3903 case 0x01: 3904 /* Confirm connection since conn->iso_qos is always configured 3905 * last. 3906 */ 3907 hci_connect_cfm(conn, rp->status); 3908 3909 /* Notify device connected in case it is a BIG Sync */ 3910 if (!rp->status && test_bit(HCI_CONN_BIG_SYNC, &conn->flags)) 3911 mgmt_device_connected(hdev, conn, NULL, 0); 3912 3913 break; 3914 } 3915 3916 unlock: 3917 hci_dev_unlock(hdev); 3918 return rp->status; 3919 } 3920 3921 static void hci_cs_le_create_big(struct hci_dev *hdev, u8 status) 3922 { 3923 bt_dev_dbg(hdev, "status 0x%2.2x", status); 3924 } 3925 3926 static u8 hci_cc_set_per_adv_param(struct hci_dev *hdev, void *data, 3927 struct sk_buff *skb) 3928 { 3929 struct hci_ev_status *rp = data; 3930 struct hci_cp_le_set_per_adv_params *cp; 3931 3932 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 3933 3934 if (rp->status) 3935 return rp->status; 3936 3937 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_PER_ADV_PARAMS); 3938 if (!cp) 3939 return rp->status; 3940 3941 /* TODO: set the conn state */ 3942 return rp->status; 3943 } 3944 3945 static u8 hci_cc_le_set_per_adv_enable(struct hci_dev *hdev, void *data, 3946 struct sk_buff *skb) 3947 { 3948 struct hci_ev_status *rp = data; 3949 struct hci_cp_le_set_per_adv_enable *cp; 3950 struct adv_info *adv = NULL, *n; 3951 u8 per_adv_cnt = 0; 3952 3953 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 3954 3955 if (rp->status) 3956 return rp->status; 3957 3958 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_PER_ADV_ENABLE); 3959 if (!cp) 3960 return rp->status; 3961 3962 hci_dev_lock(hdev); 3963 3964 adv = hci_find_adv_instance(hdev, cp->handle); 3965 3966 if (cp->enable) { 3967 hci_dev_set_flag(hdev, HCI_LE_PER_ADV); 3968 3969 if (adv) 3970 adv->enabled = true; 3971 } else { 3972 /* If just one instance was disabled check if there are 3973 * any other instance enabled before clearing HCI_LE_PER_ADV. 3974 * The current periodic adv instance will be marked as 3975 * disabled once extended advertising is also disabled. 3976 */ 3977 list_for_each_entry_safe(adv, n, &hdev->adv_instances, 3978 list) { 3979 if (adv->periodic && adv->enabled) 3980 per_adv_cnt++; 3981 } 3982 3983 if (per_adv_cnt > 1) 3984 goto unlock; 3985 3986 hci_dev_clear_flag(hdev, HCI_LE_PER_ADV); 3987 } 3988 3989 unlock: 3990 hci_dev_unlock(hdev); 3991 3992 return rp->status; 3993 } 3994 3995 #define HCI_CC_VL(_op, _func, _min, _max) \ 3996 { \ 3997 .op = _op, \ 3998 .func = _func, \ 3999 .min_len = _min, \ 4000 .max_len = _max, \ 4001 } 4002 4003 #define HCI_CC(_op, _func, _len) \ 4004 HCI_CC_VL(_op, _func, _len, _len) 4005 4006 #define HCI_CC_STATUS(_op, _func) \ 4007 HCI_CC(_op, _func, sizeof(struct hci_ev_status)) 4008 4009 static const struct hci_cc { 4010 u16 op; 4011 u8 (*func)(struct hci_dev *hdev, void *data, struct sk_buff *skb); 4012 u16 min_len; 4013 u16 max_len; 4014 } hci_cc_table[] = { 4015 HCI_CC_STATUS(HCI_OP_INQUIRY_CANCEL, hci_cc_inquiry_cancel), 4016 HCI_CC_STATUS(HCI_OP_PERIODIC_INQ, hci_cc_periodic_inq), 4017 HCI_CC_STATUS(HCI_OP_EXIT_PERIODIC_INQ, hci_cc_exit_periodic_inq), 4018 HCI_CC(HCI_OP_REMOTE_NAME_REQ_CANCEL, hci_cc_remote_name_req_cancel, 4019 sizeof(struct hci_rp_remote_name_req_cancel)), 4020 HCI_CC(HCI_OP_ROLE_DISCOVERY, hci_cc_role_discovery, 4021 sizeof(struct hci_rp_role_discovery)), 4022 HCI_CC(HCI_OP_READ_LINK_POLICY, hci_cc_read_link_policy, 4023 sizeof(struct hci_rp_read_link_policy)), 4024 HCI_CC(HCI_OP_WRITE_LINK_POLICY, hci_cc_write_link_policy, 4025 sizeof(struct hci_rp_write_link_policy)), 4026 HCI_CC(HCI_OP_READ_DEF_LINK_POLICY, hci_cc_read_def_link_policy, 4027 sizeof(struct hci_rp_read_def_link_policy)), 4028 HCI_CC_STATUS(HCI_OP_WRITE_DEF_LINK_POLICY, 4029 hci_cc_write_def_link_policy), 4030 HCI_CC_STATUS(HCI_OP_RESET, hci_cc_reset), 4031 HCI_CC(HCI_OP_READ_STORED_LINK_KEY, hci_cc_read_stored_link_key, 4032 sizeof(struct hci_rp_read_stored_link_key)), 4033 HCI_CC(HCI_OP_DELETE_STORED_LINK_KEY, hci_cc_delete_stored_link_key, 4034 sizeof(struct hci_rp_delete_stored_link_key)), 4035 HCI_CC_STATUS(HCI_OP_WRITE_LOCAL_NAME, hci_cc_write_local_name), 4036 HCI_CC(HCI_OP_READ_LOCAL_NAME, hci_cc_read_local_name, 4037 sizeof(struct hci_rp_read_local_name)), 4038 HCI_CC_STATUS(HCI_OP_WRITE_AUTH_ENABLE, hci_cc_write_auth_enable), 4039 HCI_CC_STATUS(HCI_OP_WRITE_ENCRYPT_MODE, hci_cc_write_encrypt_mode), 4040 HCI_CC_STATUS(HCI_OP_WRITE_SCAN_ENABLE, hci_cc_write_scan_enable), 4041 HCI_CC_STATUS(HCI_OP_SET_EVENT_FLT, hci_cc_set_event_filter), 4042 HCI_CC(HCI_OP_READ_CLASS_OF_DEV, hci_cc_read_class_of_dev, 4043 sizeof(struct hci_rp_read_class_of_dev)), 4044 HCI_CC_STATUS(HCI_OP_WRITE_CLASS_OF_DEV, hci_cc_write_class_of_dev), 4045 HCI_CC(HCI_OP_READ_VOICE_SETTING, hci_cc_read_voice_setting, 4046 sizeof(struct hci_rp_read_voice_setting)), 4047 HCI_CC_STATUS(HCI_OP_WRITE_VOICE_SETTING, hci_cc_write_voice_setting), 4048 HCI_CC(HCI_OP_READ_NUM_SUPPORTED_IAC, hci_cc_read_num_supported_iac, 4049 sizeof(struct hci_rp_read_num_supported_iac)), 4050 HCI_CC_STATUS(HCI_OP_WRITE_SSP_MODE, hci_cc_write_ssp_mode), 4051 HCI_CC_STATUS(HCI_OP_WRITE_SC_SUPPORT, hci_cc_write_sc_support), 4052 HCI_CC(HCI_OP_READ_AUTH_PAYLOAD_TO, hci_cc_read_auth_payload_timeout, 4053 sizeof(struct hci_rp_read_auth_payload_to)), 4054 HCI_CC(HCI_OP_WRITE_AUTH_PAYLOAD_TO, hci_cc_write_auth_payload_timeout, 4055 sizeof(struct hci_rp_write_auth_payload_to)), 4056 HCI_CC(HCI_OP_READ_LOCAL_VERSION, hci_cc_read_local_version, 4057 sizeof(struct hci_rp_read_local_version)), 4058 HCI_CC(HCI_OP_READ_LOCAL_COMMANDS, hci_cc_read_local_commands, 4059 sizeof(struct hci_rp_read_local_commands)), 4060 HCI_CC(HCI_OP_READ_LOCAL_FEATURES, hci_cc_read_local_features, 4061 sizeof(struct hci_rp_read_local_features)), 4062 HCI_CC(HCI_OP_READ_LOCAL_EXT_FEATURES, hci_cc_read_local_ext_features, 4063 sizeof(struct hci_rp_read_local_ext_features)), 4064 HCI_CC(HCI_OP_READ_BUFFER_SIZE, hci_cc_read_buffer_size, 4065 sizeof(struct hci_rp_read_buffer_size)), 4066 HCI_CC(HCI_OP_READ_BD_ADDR, hci_cc_read_bd_addr, 4067 sizeof(struct hci_rp_read_bd_addr)), 4068 HCI_CC(HCI_OP_READ_LOCAL_PAIRING_OPTS, hci_cc_read_local_pairing_opts, 4069 sizeof(struct hci_rp_read_local_pairing_opts)), 4070 HCI_CC(HCI_OP_READ_PAGE_SCAN_ACTIVITY, hci_cc_read_page_scan_activity, 4071 sizeof(struct hci_rp_read_page_scan_activity)), 4072 HCI_CC_STATUS(HCI_OP_WRITE_PAGE_SCAN_ACTIVITY, 4073 hci_cc_write_page_scan_activity), 4074 HCI_CC(HCI_OP_READ_PAGE_SCAN_TYPE, hci_cc_read_page_scan_type, 4075 sizeof(struct hci_rp_read_page_scan_type)), 4076 HCI_CC_STATUS(HCI_OP_WRITE_PAGE_SCAN_TYPE, hci_cc_write_page_scan_type), 4077 HCI_CC(HCI_OP_READ_CLOCK, hci_cc_read_clock, 4078 sizeof(struct hci_rp_read_clock)), 4079 HCI_CC(HCI_OP_READ_ENC_KEY_SIZE, hci_cc_read_enc_key_size, 4080 sizeof(struct hci_rp_read_enc_key_size)), 4081 HCI_CC(HCI_OP_READ_INQ_RSP_TX_POWER, hci_cc_read_inq_rsp_tx_power, 4082 sizeof(struct hci_rp_read_inq_rsp_tx_power)), 4083 HCI_CC(HCI_OP_READ_DEF_ERR_DATA_REPORTING, 4084 hci_cc_read_def_err_data_reporting, 4085 sizeof(struct hci_rp_read_def_err_data_reporting)), 4086 HCI_CC_STATUS(HCI_OP_WRITE_DEF_ERR_DATA_REPORTING, 4087 hci_cc_write_def_err_data_reporting), 4088 HCI_CC(HCI_OP_PIN_CODE_REPLY, hci_cc_pin_code_reply, 4089 sizeof(struct hci_rp_pin_code_reply)), 4090 HCI_CC(HCI_OP_PIN_CODE_NEG_REPLY, hci_cc_pin_code_neg_reply, 4091 sizeof(struct hci_rp_pin_code_neg_reply)), 4092 HCI_CC(HCI_OP_READ_LOCAL_OOB_DATA, hci_cc_read_local_oob_data, 4093 sizeof(struct hci_rp_read_local_oob_data)), 4094 HCI_CC(HCI_OP_READ_LOCAL_OOB_EXT_DATA, hci_cc_read_local_oob_ext_data, 4095 sizeof(struct hci_rp_read_local_oob_ext_data)), 4096 HCI_CC(HCI_OP_LE_READ_BUFFER_SIZE, hci_cc_le_read_buffer_size, 4097 sizeof(struct hci_rp_le_read_buffer_size)), 4098 HCI_CC(HCI_OP_LE_READ_LOCAL_FEATURES, hci_cc_le_read_local_features, 4099 sizeof(struct hci_rp_le_read_local_features)), 4100 HCI_CC(HCI_OP_LE_READ_ADV_TX_POWER, hci_cc_le_read_adv_tx_power, 4101 sizeof(struct hci_rp_le_read_adv_tx_power)), 4102 HCI_CC(HCI_OP_USER_CONFIRM_REPLY, hci_cc_user_confirm_reply, 4103 sizeof(struct hci_rp_user_confirm_reply)), 4104 HCI_CC(HCI_OP_USER_CONFIRM_NEG_REPLY, hci_cc_user_confirm_neg_reply, 4105 sizeof(struct hci_rp_user_confirm_reply)), 4106 HCI_CC(HCI_OP_USER_PASSKEY_REPLY, hci_cc_user_passkey_reply, 4107 sizeof(struct hci_rp_user_confirm_reply)), 4108 HCI_CC(HCI_OP_USER_PASSKEY_NEG_REPLY, hci_cc_user_passkey_neg_reply, 4109 sizeof(struct hci_rp_user_confirm_reply)), 4110 HCI_CC_STATUS(HCI_OP_LE_SET_RANDOM_ADDR, hci_cc_le_set_random_addr), 4111 HCI_CC_STATUS(HCI_OP_LE_SET_ADV_ENABLE, hci_cc_le_set_adv_enable), 4112 HCI_CC_STATUS(HCI_OP_LE_SET_SCAN_PARAM, hci_cc_le_set_scan_param), 4113 HCI_CC_STATUS(HCI_OP_LE_SET_SCAN_ENABLE, hci_cc_le_set_scan_enable), 4114 HCI_CC(HCI_OP_LE_READ_ACCEPT_LIST_SIZE, 4115 hci_cc_le_read_accept_list_size, 4116 sizeof(struct hci_rp_le_read_accept_list_size)), 4117 HCI_CC_STATUS(HCI_OP_LE_CLEAR_ACCEPT_LIST, hci_cc_le_clear_accept_list), 4118 HCI_CC_STATUS(HCI_OP_LE_ADD_TO_ACCEPT_LIST, 4119 hci_cc_le_add_to_accept_list), 4120 HCI_CC_STATUS(HCI_OP_LE_DEL_FROM_ACCEPT_LIST, 4121 hci_cc_le_del_from_accept_list), 4122 HCI_CC(HCI_OP_LE_READ_SUPPORTED_STATES, hci_cc_le_read_supported_states, 4123 sizeof(struct hci_rp_le_read_supported_states)), 4124 HCI_CC(HCI_OP_LE_READ_DEF_DATA_LEN, hci_cc_le_read_def_data_len, 4125 sizeof(struct hci_rp_le_read_def_data_len)), 4126 HCI_CC_STATUS(HCI_OP_LE_WRITE_DEF_DATA_LEN, 4127 hci_cc_le_write_def_data_len), 4128 HCI_CC_STATUS(HCI_OP_LE_ADD_TO_RESOLV_LIST, 4129 hci_cc_le_add_to_resolv_list), 4130 HCI_CC_STATUS(HCI_OP_LE_DEL_FROM_RESOLV_LIST, 4131 hci_cc_le_del_from_resolv_list), 4132 HCI_CC_STATUS(HCI_OP_LE_CLEAR_RESOLV_LIST, 4133 hci_cc_le_clear_resolv_list), 4134 HCI_CC(HCI_OP_LE_READ_RESOLV_LIST_SIZE, hci_cc_le_read_resolv_list_size, 4135 sizeof(struct hci_rp_le_read_resolv_list_size)), 4136 HCI_CC_STATUS(HCI_OP_LE_SET_ADDR_RESOLV_ENABLE, 4137 hci_cc_le_set_addr_resolution_enable), 4138 HCI_CC(HCI_OP_LE_READ_MAX_DATA_LEN, hci_cc_le_read_max_data_len, 4139 sizeof(struct hci_rp_le_read_max_data_len)), 4140 HCI_CC_STATUS(HCI_OP_WRITE_LE_HOST_SUPPORTED, 4141 hci_cc_write_le_host_supported), 4142 HCI_CC_STATUS(HCI_OP_LE_SET_ADV_PARAM, hci_cc_set_adv_param), 4143 HCI_CC(HCI_OP_READ_RSSI, hci_cc_read_rssi, 4144 sizeof(struct hci_rp_read_rssi)), 4145 HCI_CC(HCI_OP_READ_TX_POWER, hci_cc_read_tx_power, 4146 sizeof(struct hci_rp_read_tx_power)), 4147 HCI_CC_STATUS(HCI_OP_WRITE_SSP_DEBUG_MODE, hci_cc_write_ssp_debug_mode), 4148 HCI_CC_STATUS(HCI_OP_LE_SET_EXT_SCAN_PARAMS, 4149 hci_cc_le_set_ext_scan_param), 4150 HCI_CC_STATUS(HCI_OP_LE_SET_EXT_SCAN_ENABLE, 4151 hci_cc_le_set_ext_scan_enable), 4152 HCI_CC_STATUS(HCI_OP_LE_SET_DEFAULT_PHY, hci_cc_le_set_default_phy), 4153 HCI_CC(HCI_OP_LE_READ_NUM_SUPPORTED_ADV_SETS, 4154 hci_cc_le_read_num_adv_sets, 4155 sizeof(struct hci_rp_le_read_num_supported_adv_sets)), 4156 HCI_CC(HCI_OP_LE_SET_EXT_ADV_PARAMS, hci_cc_set_ext_adv_param, 4157 sizeof(struct hci_rp_le_set_ext_adv_params)), 4158 HCI_CC_STATUS(HCI_OP_LE_SET_EXT_ADV_ENABLE, 4159 hci_cc_le_set_ext_adv_enable), 4160 HCI_CC_STATUS(HCI_OP_LE_SET_ADV_SET_RAND_ADDR, 4161 hci_cc_le_set_adv_set_random_addr), 4162 HCI_CC_STATUS(HCI_OP_LE_REMOVE_ADV_SET, hci_cc_le_remove_adv_set), 4163 HCI_CC_STATUS(HCI_OP_LE_CLEAR_ADV_SETS, hci_cc_le_clear_adv_sets), 4164 HCI_CC_STATUS(HCI_OP_LE_SET_PER_ADV_PARAMS, hci_cc_set_per_adv_param), 4165 HCI_CC_STATUS(HCI_OP_LE_SET_PER_ADV_ENABLE, 4166 hci_cc_le_set_per_adv_enable), 4167 HCI_CC(HCI_OP_LE_READ_TRANSMIT_POWER, hci_cc_le_read_transmit_power, 4168 sizeof(struct hci_rp_le_read_transmit_power)), 4169 HCI_CC_STATUS(HCI_OP_LE_SET_PRIVACY_MODE, hci_cc_le_set_privacy_mode), 4170 HCI_CC(HCI_OP_LE_READ_BUFFER_SIZE_V2, hci_cc_le_read_buffer_size_v2, 4171 sizeof(struct hci_rp_le_read_buffer_size_v2)), 4172 HCI_CC_VL(HCI_OP_LE_SET_CIG_PARAMS, hci_cc_le_set_cig_params, 4173 sizeof(struct hci_rp_le_set_cig_params), HCI_MAX_EVENT_SIZE), 4174 HCI_CC(HCI_OP_LE_SETUP_ISO_PATH, hci_cc_le_setup_iso_path, 4175 sizeof(struct hci_rp_le_setup_iso_path)), 4176 }; 4177 4178 static u8 hci_cc_func(struct hci_dev *hdev, const struct hci_cc *cc, 4179 struct sk_buff *skb) 4180 { 4181 void *data; 4182 4183 if (skb->len < cc->min_len) { 4184 bt_dev_err(hdev, "unexpected cc 0x%4.4x length: %u < %u", 4185 cc->op, skb->len, cc->min_len); 4186 return HCI_ERROR_UNSPECIFIED; 4187 } 4188 4189 /* Just warn if the length is over max_len size it still be possible to 4190 * partially parse the cc so leave to callback to decide if that is 4191 * acceptable. 4192 */ 4193 if (skb->len > cc->max_len) 4194 bt_dev_warn(hdev, "unexpected cc 0x%4.4x length: %u > %u", 4195 cc->op, skb->len, cc->max_len); 4196 4197 data = hci_cc_skb_pull(hdev, skb, cc->op, cc->min_len); 4198 if (!data) 4199 return HCI_ERROR_UNSPECIFIED; 4200 4201 return cc->func(hdev, data, skb); 4202 } 4203 4204 static void hci_cmd_complete_evt(struct hci_dev *hdev, void *data, 4205 struct sk_buff *skb, u16 *opcode, u8 *status, 4206 hci_req_complete_t *req_complete, 4207 hci_req_complete_skb_t *req_complete_skb) 4208 { 4209 struct hci_ev_cmd_complete *ev = data; 4210 int i; 4211 4212 *opcode = __le16_to_cpu(ev->opcode); 4213 4214 bt_dev_dbg(hdev, "opcode 0x%4.4x", *opcode); 4215 4216 for (i = 0; i < ARRAY_SIZE(hci_cc_table); i++) { 4217 if (hci_cc_table[i].op == *opcode) { 4218 *status = hci_cc_func(hdev, &hci_cc_table[i], skb); 4219 break; 4220 } 4221 } 4222 4223 if (i == ARRAY_SIZE(hci_cc_table)) { 4224 /* Unknown opcode, assume byte 0 contains the status, so 4225 * that e.g. __hci_cmd_sync() properly returns errors 4226 * for vendor specific commands send by HCI drivers. 4227 * If a vendor doesn't actually follow this convention we may 4228 * need to introduce a vendor CC table in order to properly set 4229 * the status. 4230 */ 4231 *status = skb->data[0]; 4232 } 4233 4234 handle_cmd_cnt_and_timer(hdev, ev->ncmd); 4235 4236 hci_req_cmd_complete(hdev, *opcode, *status, req_complete, 4237 req_complete_skb); 4238 4239 if (hci_dev_test_flag(hdev, HCI_CMD_PENDING)) { 4240 bt_dev_err(hdev, 4241 "unexpected event for opcode 0x%4.4x", *opcode); 4242 return; 4243 } 4244 4245 if (atomic_read(&hdev->cmd_cnt) && !skb_queue_empty(&hdev->cmd_q)) 4246 queue_work(hdev->workqueue, &hdev->cmd_work); 4247 } 4248 4249 static void hci_cs_le_create_cis(struct hci_dev *hdev, u8 status) 4250 { 4251 struct hci_cp_le_create_cis *cp; 4252 bool pending = false; 4253 int i; 4254 4255 bt_dev_dbg(hdev, "status 0x%2.2x", status); 4256 4257 if (!status) 4258 return; 4259 4260 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_CREATE_CIS); 4261 if (!cp) 4262 return; 4263 4264 hci_dev_lock(hdev); 4265 4266 /* Remove connection if command failed */ 4267 for (i = 0; i < cp->num_cis; i++) { 4268 struct hci_conn *conn; 4269 u16 handle; 4270 4271 handle = __le16_to_cpu(cp->cis[i].cis_handle); 4272 4273 conn = hci_conn_hash_lookup_handle(hdev, handle); 4274 if (conn) { 4275 if (test_and_clear_bit(HCI_CONN_CREATE_CIS, 4276 &conn->flags)) 4277 pending = true; 4278 conn->state = BT_CLOSED; 4279 hci_connect_cfm(conn, status); 4280 hci_conn_del(conn); 4281 } 4282 } 4283 cp->num_cis = 0; 4284 4285 if (pending) 4286 hci_le_create_cis_pending(hdev); 4287 4288 hci_dev_unlock(hdev); 4289 } 4290 4291 #define HCI_CS(_op, _func) \ 4292 { \ 4293 .op = _op, \ 4294 .func = _func, \ 4295 } 4296 4297 static const struct hci_cs { 4298 u16 op; 4299 void (*func)(struct hci_dev *hdev, __u8 status); 4300 } hci_cs_table[] = { 4301 HCI_CS(HCI_OP_INQUIRY, hci_cs_inquiry), 4302 HCI_CS(HCI_OP_CREATE_CONN, hci_cs_create_conn), 4303 HCI_CS(HCI_OP_DISCONNECT, hci_cs_disconnect), 4304 HCI_CS(HCI_OP_ADD_SCO, hci_cs_add_sco), 4305 HCI_CS(HCI_OP_AUTH_REQUESTED, hci_cs_auth_requested), 4306 HCI_CS(HCI_OP_SET_CONN_ENCRYPT, hci_cs_set_conn_encrypt), 4307 HCI_CS(HCI_OP_REMOTE_NAME_REQ, hci_cs_remote_name_req), 4308 HCI_CS(HCI_OP_READ_REMOTE_FEATURES, hci_cs_read_remote_features), 4309 HCI_CS(HCI_OP_READ_REMOTE_EXT_FEATURES, 4310 hci_cs_read_remote_ext_features), 4311 HCI_CS(HCI_OP_SETUP_SYNC_CONN, hci_cs_setup_sync_conn), 4312 HCI_CS(HCI_OP_ENHANCED_SETUP_SYNC_CONN, 4313 hci_cs_enhanced_setup_sync_conn), 4314 HCI_CS(HCI_OP_SNIFF_MODE, hci_cs_sniff_mode), 4315 HCI_CS(HCI_OP_EXIT_SNIFF_MODE, hci_cs_exit_sniff_mode), 4316 HCI_CS(HCI_OP_SWITCH_ROLE, hci_cs_switch_role), 4317 HCI_CS(HCI_OP_LE_CREATE_CONN, hci_cs_le_create_conn), 4318 HCI_CS(HCI_OP_LE_READ_REMOTE_FEATURES, hci_cs_le_read_remote_features), 4319 HCI_CS(HCI_OP_LE_START_ENC, hci_cs_le_start_enc), 4320 HCI_CS(HCI_OP_LE_EXT_CREATE_CONN, hci_cs_le_ext_create_conn), 4321 HCI_CS(HCI_OP_LE_CREATE_CIS, hci_cs_le_create_cis), 4322 HCI_CS(HCI_OP_LE_CREATE_BIG, hci_cs_le_create_big), 4323 }; 4324 4325 static void hci_cmd_status_evt(struct hci_dev *hdev, void *data, 4326 struct sk_buff *skb, u16 *opcode, u8 *status, 4327 hci_req_complete_t *req_complete, 4328 hci_req_complete_skb_t *req_complete_skb) 4329 { 4330 struct hci_ev_cmd_status *ev = data; 4331 int i; 4332 4333 *opcode = __le16_to_cpu(ev->opcode); 4334 *status = ev->status; 4335 4336 bt_dev_dbg(hdev, "opcode 0x%4.4x", *opcode); 4337 4338 for (i = 0; i < ARRAY_SIZE(hci_cs_table); i++) { 4339 if (hci_cs_table[i].op == *opcode) { 4340 hci_cs_table[i].func(hdev, ev->status); 4341 break; 4342 } 4343 } 4344 4345 handle_cmd_cnt_and_timer(hdev, ev->ncmd); 4346 4347 /* Indicate request completion if the command failed. Also, if 4348 * we're not waiting for a special event and we get a success 4349 * command status we should try to flag the request as completed 4350 * (since for this kind of commands there will not be a command 4351 * complete event). 4352 */ 4353 if (ev->status || (hdev->req_skb && !hci_skb_event(hdev->req_skb))) { 4354 hci_req_cmd_complete(hdev, *opcode, ev->status, req_complete, 4355 req_complete_skb); 4356 if (hci_dev_test_flag(hdev, HCI_CMD_PENDING)) { 4357 bt_dev_err(hdev, "unexpected event for opcode 0x%4.4x", 4358 *opcode); 4359 return; 4360 } 4361 } 4362 4363 if (atomic_read(&hdev->cmd_cnt) && !skb_queue_empty(&hdev->cmd_q)) 4364 queue_work(hdev->workqueue, &hdev->cmd_work); 4365 } 4366 4367 static void hci_hardware_error_evt(struct hci_dev *hdev, void *data, 4368 struct sk_buff *skb) 4369 { 4370 struct hci_ev_hardware_error *ev = data; 4371 4372 bt_dev_dbg(hdev, "code 0x%2.2x", ev->code); 4373 4374 hdev->hw_error_code = ev->code; 4375 4376 queue_work(hdev->req_workqueue, &hdev->error_reset); 4377 } 4378 4379 static void hci_role_change_evt(struct hci_dev *hdev, void *data, 4380 struct sk_buff *skb) 4381 { 4382 struct hci_ev_role_change *ev = data; 4383 struct hci_conn *conn; 4384 4385 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 4386 4387 hci_dev_lock(hdev); 4388 4389 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr); 4390 if (conn) { 4391 if (!ev->status) 4392 conn->role = ev->role; 4393 4394 clear_bit(HCI_CONN_RSWITCH_PEND, &conn->flags); 4395 4396 hci_role_switch_cfm(conn, ev->status, ev->role); 4397 } 4398 4399 hci_dev_unlock(hdev); 4400 } 4401 4402 static void hci_num_comp_pkts_evt(struct hci_dev *hdev, void *data, 4403 struct sk_buff *skb) 4404 { 4405 struct hci_ev_num_comp_pkts *ev = data; 4406 int i; 4407 4408 if (!hci_ev_skb_pull(hdev, skb, HCI_EV_NUM_COMP_PKTS, 4409 flex_array_size(ev, handles, ev->num))) 4410 return; 4411 4412 bt_dev_dbg(hdev, "num %d", ev->num); 4413 4414 for (i = 0; i < ev->num; i++) { 4415 struct hci_comp_pkts_info *info = &ev->handles[i]; 4416 struct hci_conn *conn; 4417 __u16 handle, count; 4418 unsigned int i; 4419 4420 handle = __le16_to_cpu(info->handle); 4421 count = __le16_to_cpu(info->count); 4422 4423 conn = hci_conn_hash_lookup_handle(hdev, handle); 4424 if (!conn) 4425 continue; 4426 4427 conn->sent -= count; 4428 4429 for (i = 0; i < count; ++i) 4430 hci_conn_tx_dequeue(conn); 4431 4432 switch (conn->type) { 4433 case ACL_LINK: 4434 hdev->acl_cnt += count; 4435 if (hdev->acl_cnt > hdev->acl_pkts) 4436 hdev->acl_cnt = hdev->acl_pkts; 4437 break; 4438 4439 case LE_LINK: 4440 if (hdev->le_pkts) { 4441 hdev->le_cnt += count; 4442 if (hdev->le_cnt > hdev->le_pkts) 4443 hdev->le_cnt = hdev->le_pkts; 4444 } else { 4445 hdev->acl_cnt += count; 4446 if (hdev->acl_cnt > hdev->acl_pkts) 4447 hdev->acl_cnt = hdev->acl_pkts; 4448 } 4449 break; 4450 4451 case SCO_LINK: 4452 case ESCO_LINK: 4453 hdev->sco_cnt += count; 4454 if (hdev->sco_cnt > hdev->sco_pkts) 4455 hdev->sco_cnt = hdev->sco_pkts; 4456 4457 break; 4458 4459 case ISO_LINK: 4460 if (hdev->iso_pkts) { 4461 hdev->iso_cnt += count; 4462 if (hdev->iso_cnt > hdev->iso_pkts) 4463 hdev->iso_cnt = hdev->iso_pkts; 4464 } else if (hdev->le_pkts) { 4465 hdev->le_cnt += count; 4466 if (hdev->le_cnt > hdev->le_pkts) 4467 hdev->le_cnt = hdev->le_pkts; 4468 } else { 4469 hdev->acl_cnt += count; 4470 if (hdev->acl_cnt > hdev->acl_pkts) 4471 hdev->acl_cnt = hdev->acl_pkts; 4472 } 4473 break; 4474 4475 default: 4476 bt_dev_err(hdev, "unknown type %d conn %p", 4477 conn->type, conn); 4478 break; 4479 } 4480 } 4481 4482 queue_work(hdev->workqueue, &hdev->tx_work); 4483 } 4484 4485 static void hci_mode_change_evt(struct hci_dev *hdev, void *data, 4486 struct sk_buff *skb) 4487 { 4488 struct hci_ev_mode_change *ev = data; 4489 struct hci_conn *conn; 4490 4491 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 4492 4493 hci_dev_lock(hdev); 4494 4495 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle)); 4496 if (conn) { 4497 conn->mode = ev->mode; 4498 4499 if (!test_and_clear_bit(HCI_CONN_MODE_CHANGE_PEND, 4500 &conn->flags)) { 4501 if (conn->mode == HCI_CM_ACTIVE) 4502 set_bit(HCI_CONN_POWER_SAVE, &conn->flags); 4503 else 4504 clear_bit(HCI_CONN_POWER_SAVE, &conn->flags); 4505 } 4506 4507 if (test_and_clear_bit(HCI_CONN_SCO_SETUP_PEND, &conn->flags)) 4508 hci_sco_setup(conn, ev->status); 4509 } 4510 4511 hci_dev_unlock(hdev); 4512 } 4513 4514 static void hci_pin_code_request_evt(struct hci_dev *hdev, void *data, 4515 struct sk_buff *skb) 4516 { 4517 struct hci_ev_pin_code_req *ev = data; 4518 struct hci_conn *conn; 4519 4520 bt_dev_dbg(hdev, ""); 4521 4522 hci_dev_lock(hdev); 4523 4524 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr); 4525 if (!conn) 4526 goto unlock; 4527 4528 if (conn->state == BT_CONNECTED) { 4529 hci_conn_hold(conn); 4530 conn->disc_timeout = HCI_PAIRING_TIMEOUT; 4531 hci_conn_drop(conn); 4532 } 4533 4534 if (!hci_dev_test_flag(hdev, HCI_BONDABLE) && 4535 !test_bit(HCI_CONN_AUTH_INITIATOR, &conn->flags)) { 4536 hci_send_cmd(hdev, HCI_OP_PIN_CODE_NEG_REPLY, 4537 sizeof(ev->bdaddr), &ev->bdaddr); 4538 } else if (hci_dev_test_flag(hdev, HCI_MGMT)) { 4539 u8 secure; 4540 4541 if (conn->pending_sec_level == BT_SECURITY_HIGH) 4542 secure = 1; 4543 else 4544 secure = 0; 4545 4546 mgmt_pin_code_request(hdev, &ev->bdaddr, secure); 4547 } 4548 4549 unlock: 4550 hci_dev_unlock(hdev); 4551 } 4552 4553 static void conn_set_key(struct hci_conn *conn, u8 key_type, u8 pin_len) 4554 { 4555 if (key_type == HCI_LK_CHANGED_COMBINATION) 4556 return; 4557 4558 conn->pin_length = pin_len; 4559 conn->key_type = key_type; 4560 4561 switch (key_type) { 4562 case HCI_LK_LOCAL_UNIT: 4563 case HCI_LK_REMOTE_UNIT: 4564 case HCI_LK_DEBUG_COMBINATION: 4565 return; 4566 case HCI_LK_COMBINATION: 4567 if (pin_len == 16) 4568 conn->pending_sec_level = BT_SECURITY_HIGH; 4569 else 4570 conn->pending_sec_level = BT_SECURITY_MEDIUM; 4571 break; 4572 case HCI_LK_UNAUTH_COMBINATION_P192: 4573 case HCI_LK_UNAUTH_COMBINATION_P256: 4574 conn->pending_sec_level = BT_SECURITY_MEDIUM; 4575 break; 4576 case HCI_LK_AUTH_COMBINATION_P192: 4577 conn->pending_sec_level = BT_SECURITY_HIGH; 4578 break; 4579 case HCI_LK_AUTH_COMBINATION_P256: 4580 conn->pending_sec_level = BT_SECURITY_FIPS; 4581 break; 4582 } 4583 } 4584 4585 static void hci_link_key_request_evt(struct hci_dev *hdev, void *data, 4586 struct sk_buff *skb) 4587 { 4588 struct hci_ev_link_key_req *ev = data; 4589 struct hci_cp_link_key_reply cp; 4590 struct hci_conn *conn; 4591 struct link_key *key; 4592 4593 bt_dev_dbg(hdev, ""); 4594 4595 if (!hci_dev_test_flag(hdev, HCI_MGMT)) 4596 return; 4597 4598 hci_dev_lock(hdev); 4599 4600 key = hci_find_link_key(hdev, &ev->bdaddr); 4601 if (!key) { 4602 bt_dev_dbg(hdev, "link key not found for %pMR", &ev->bdaddr); 4603 goto not_found; 4604 } 4605 4606 bt_dev_dbg(hdev, "found key type %u for %pMR", key->type, &ev->bdaddr); 4607 4608 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr); 4609 if (conn) { 4610 clear_bit(HCI_CONN_NEW_LINK_KEY, &conn->flags); 4611 4612 if ((key->type == HCI_LK_UNAUTH_COMBINATION_P192 || 4613 key->type == HCI_LK_UNAUTH_COMBINATION_P256) && 4614 conn->auth_type != 0xff && (conn->auth_type & 0x01)) { 4615 bt_dev_dbg(hdev, "ignoring unauthenticated key"); 4616 goto not_found; 4617 } 4618 4619 if (key->type == HCI_LK_COMBINATION && key->pin_len < 16 && 4620 (conn->pending_sec_level == BT_SECURITY_HIGH || 4621 conn->pending_sec_level == BT_SECURITY_FIPS)) { 4622 bt_dev_dbg(hdev, "ignoring key unauthenticated for high security"); 4623 goto not_found; 4624 } 4625 4626 conn_set_key(conn, key->type, key->pin_len); 4627 } 4628 4629 bacpy(&cp.bdaddr, &ev->bdaddr); 4630 memcpy(cp.link_key, key->val, HCI_LINK_KEY_SIZE); 4631 4632 hci_send_cmd(hdev, HCI_OP_LINK_KEY_REPLY, sizeof(cp), &cp); 4633 4634 hci_dev_unlock(hdev); 4635 4636 return; 4637 4638 not_found: 4639 hci_send_cmd(hdev, HCI_OP_LINK_KEY_NEG_REPLY, 6, &ev->bdaddr); 4640 hci_dev_unlock(hdev); 4641 } 4642 4643 static void hci_link_key_notify_evt(struct hci_dev *hdev, void *data, 4644 struct sk_buff *skb) 4645 { 4646 struct hci_ev_link_key_notify *ev = data; 4647 struct hci_conn *conn; 4648 struct link_key *key; 4649 bool persistent; 4650 u8 pin_len = 0; 4651 4652 bt_dev_dbg(hdev, ""); 4653 4654 hci_dev_lock(hdev); 4655 4656 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr); 4657 if (!conn) 4658 goto unlock; 4659 4660 /* Ignore NULL link key against CVE-2020-26555 */ 4661 if (!crypto_memneq(ev->link_key, ZERO_KEY, HCI_LINK_KEY_SIZE)) { 4662 bt_dev_dbg(hdev, "Ignore NULL link key (ZERO KEY) for %pMR", 4663 &ev->bdaddr); 4664 hci_disconnect(conn, HCI_ERROR_AUTH_FAILURE); 4665 hci_conn_drop(conn); 4666 goto unlock; 4667 } 4668 4669 hci_conn_hold(conn); 4670 conn->disc_timeout = HCI_DISCONN_TIMEOUT; 4671 hci_conn_drop(conn); 4672 4673 set_bit(HCI_CONN_NEW_LINK_KEY, &conn->flags); 4674 conn_set_key(conn, ev->key_type, conn->pin_length); 4675 4676 if (!hci_dev_test_flag(hdev, HCI_MGMT)) 4677 goto unlock; 4678 4679 key = hci_add_link_key(hdev, conn, &ev->bdaddr, ev->link_key, 4680 ev->key_type, pin_len, &persistent); 4681 if (!key) 4682 goto unlock; 4683 4684 /* Update connection information since adding the key will have 4685 * fixed up the type in the case of changed combination keys. 4686 */ 4687 if (ev->key_type == HCI_LK_CHANGED_COMBINATION) 4688 conn_set_key(conn, key->type, key->pin_len); 4689 4690 mgmt_new_link_key(hdev, key, persistent); 4691 4692 /* Keep debug keys around only if the HCI_KEEP_DEBUG_KEYS flag 4693 * is set. If it's not set simply remove the key from the kernel 4694 * list (we've still notified user space about it but with 4695 * store_hint being 0). 4696 */ 4697 if (key->type == HCI_LK_DEBUG_COMBINATION && 4698 !hci_dev_test_flag(hdev, HCI_KEEP_DEBUG_KEYS)) { 4699 list_del_rcu(&key->list); 4700 kfree_rcu(key, rcu); 4701 goto unlock; 4702 } 4703 4704 if (persistent) 4705 clear_bit(HCI_CONN_FLUSH_KEY, &conn->flags); 4706 else 4707 set_bit(HCI_CONN_FLUSH_KEY, &conn->flags); 4708 4709 unlock: 4710 hci_dev_unlock(hdev); 4711 } 4712 4713 static void hci_clock_offset_evt(struct hci_dev *hdev, void *data, 4714 struct sk_buff *skb) 4715 { 4716 struct hci_ev_clock_offset *ev = data; 4717 struct hci_conn *conn; 4718 4719 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 4720 4721 hci_dev_lock(hdev); 4722 4723 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle)); 4724 if (conn && !ev->status) { 4725 struct inquiry_entry *ie; 4726 4727 ie = hci_inquiry_cache_lookup(hdev, &conn->dst); 4728 if (ie) { 4729 ie->data.clock_offset = ev->clock_offset; 4730 ie->timestamp = jiffies; 4731 } 4732 } 4733 4734 hci_dev_unlock(hdev); 4735 } 4736 4737 static void hci_pkt_type_change_evt(struct hci_dev *hdev, void *data, 4738 struct sk_buff *skb) 4739 { 4740 struct hci_ev_pkt_type_change *ev = data; 4741 struct hci_conn *conn; 4742 4743 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 4744 4745 hci_dev_lock(hdev); 4746 4747 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle)); 4748 if (conn && !ev->status) 4749 conn->pkt_type = __le16_to_cpu(ev->pkt_type); 4750 4751 hci_dev_unlock(hdev); 4752 } 4753 4754 static void hci_pscan_rep_mode_evt(struct hci_dev *hdev, void *data, 4755 struct sk_buff *skb) 4756 { 4757 struct hci_ev_pscan_rep_mode *ev = data; 4758 struct inquiry_entry *ie; 4759 4760 bt_dev_dbg(hdev, ""); 4761 4762 hci_dev_lock(hdev); 4763 4764 ie = hci_inquiry_cache_lookup(hdev, &ev->bdaddr); 4765 if (ie) { 4766 ie->data.pscan_rep_mode = ev->pscan_rep_mode; 4767 ie->timestamp = jiffies; 4768 } 4769 4770 hci_dev_unlock(hdev); 4771 } 4772 4773 static void hci_inquiry_result_with_rssi_evt(struct hci_dev *hdev, void *edata, 4774 struct sk_buff *skb) 4775 { 4776 struct hci_ev_inquiry_result_rssi *ev = edata; 4777 struct inquiry_data data; 4778 int i; 4779 4780 bt_dev_dbg(hdev, "num_rsp %d", ev->num); 4781 4782 if (!ev->num) 4783 return; 4784 4785 if (hci_dev_test_flag(hdev, HCI_PERIODIC_INQ)) 4786 return; 4787 4788 hci_dev_lock(hdev); 4789 4790 if (skb->len == array_size(ev->num, 4791 sizeof(struct inquiry_info_rssi_pscan))) { 4792 struct inquiry_info_rssi_pscan *info; 4793 4794 for (i = 0; i < ev->num; i++) { 4795 u32 flags; 4796 4797 info = hci_ev_skb_pull(hdev, skb, 4798 HCI_EV_INQUIRY_RESULT_WITH_RSSI, 4799 sizeof(*info)); 4800 if (!info) { 4801 bt_dev_err(hdev, "Malformed HCI Event: 0x%2.2x", 4802 HCI_EV_INQUIRY_RESULT_WITH_RSSI); 4803 goto unlock; 4804 } 4805 4806 bacpy(&data.bdaddr, &info->bdaddr); 4807 data.pscan_rep_mode = info->pscan_rep_mode; 4808 data.pscan_period_mode = info->pscan_period_mode; 4809 data.pscan_mode = info->pscan_mode; 4810 memcpy(data.dev_class, info->dev_class, 3); 4811 data.clock_offset = info->clock_offset; 4812 data.rssi = info->rssi; 4813 data.ssp_mode = 0x00; 4814 4815 flags = hci_inquiry_cache_update(hdev, &data, false); 4816 4817 mgmt_device_found(hdev, &info->bdaddr, ACL_LINK, 0x00, 4818 info->dev_class, info->rssi, 4819 flags, NULL, 0, NULL, 0, 0); 4820 } 4821 } else if (skb->len == array_size(ev->num, 4822 sizeof(struct inquiry_info_rssi))) { 4823 struct inquiry_info_rssi *info; 4824 4825 for (i = 0; i < ev->num; i++) { 4826 u32 flags; 4827 4828 info = hci_ev_skb_pull(hdev, skb, 4829 HCI_EV_INQUIRY_RESULT_WITH_RSSI, 4830 sizeof(*info)); 4831 if (!info) { 4832 bt_dev_err(hdev, "Malformed HCI Event: 0x%2.2x", 4833 HCI_EV_INQUIRY_RESULT_WITH_RSSI); 4834 goto unlock; 4835 } 4836 4837 bacpy(&data.bdaddr, &info->bdaddr); 4838 data.pscan_rep_mode = info->pscan_rep_mode; 4839 data.pscan_period_mode = info->pscan_period_mode; 4840 data.pscan_mode = 0x00; 4841 memcpy(data.dev_class, info->dev_class, 3); 4842 data.clock_offset = info->clock_offset; 4843 data.rssi = info->rssi; 4844 data.ssp_mode = 0x00; 4845 4846 flags = hci_inquiry_cache_update(hdev, &data, false); 4847 4848 mgmt_device_found(hdev, &info->bdaddr, ACL_LINK, 0x00, 4849 info->dev_class, info->rssi, 4850 flags, NULL, 0, NULL, 0, 0); 4851 } 4852 } else { 4853 bt_dev_err(hdev, "Malformed HCI Event: 0x%2.2x", 4854 HCI_EV_INQUIRY_RESULT_WITH_RSSI); 4855 } 4856 unlock: 4857 hci_dev_unlock(hdev); 4858 } 4859 4860 static void hci_remote_ext_features_evt(struct hci_dev *hdev, void *data, 4861 struct sk_buff *skb) 4862 { 4863 struct hci_ev_remote_ext_features *ev = data; 4864 struct hci_conn *conn; 4865 4866 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 4867 4868 hci_dev_lock(hdev); 4869 4870 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle)); 4871 if (!conn) 4872 goto unlock; 4873 4874 if (ev->page < HCI_MAX_PAGES) 4875 memcpy(conn->features[ev->page], ev->features, 8); 4876 4877 if (!ev->status && ev->page == 0x01) { 4878 struct inquiry_entry *ie; 4879 4880 ie = hci_inquiry_cache_lookup(hdev, &conn->dst); 4881 if (ie) 4882 ie->data.ssp_mode = (ev->features[0] & LMP_HOST_SSP); 4883 4884 if (ev->features[0] & LMP_HOST_SSP) { 4885 set_bit(HCI_CONN_SSP_ENABLED, &conn->flags); 4886 } else { 4887 /* It is mandatory by the Bluetooth specification that 4888 * Extended Inquiry Results are only used when Secure 4889 * Simple Pairing is enabled, but some devices violate 4890 * this. 4891 * 4892 * To make these devices work, the internal SSP 4893 * enabled flag needs to be cleared if the remote host 4894 * features do not indicate SSP support */ 4895 clear_bit(HCI_CONN_SSP_ENABLED, &conn->flags); 4896 } 4897 4898 if (ev->features[0] & LMP_HOST_SC) 4899 set_bit(HCI_CONN_SC_ENABLED, &conn->flags); 4900 } 4901 4902 if (conn->state != BT_CONFIG) 4903 goto unlock; 4904 4905 if (!ev->status && !test_bit(HCI_CONN_MGMT_CONNECTED, &conn->flags)) { 4906 struct hci_cp_remote_name_req cp; 4907 memset(&cp, 0, sizeof(cp)); 4908 bacpy(&cp.bdaddr, &conn->dst); 4909 cp.pscan_rep_mode = 0x02; 4910 hci_send_cmd(hdev, HCI_OP_REMOTE_NAME_REQ, sizeof(cp), &cp); 4911 } else { 4912 mgmt_device_connected(hdev, conn, NULL, 0); 4913 } 4914 4915 if (!hci_outgoing_auth_needed(hdev, conn)) { 4916 conn->state = BT_CONNECTED; 4917 hci_connect_cfm(conn, ev->status); 4918 hci_conn_drop(conn); 4919 } 4920 4921 unlock: 4922 hci_dev_unlock(hdev); 4923 } 4924 4925 static void hci_sync_conn_complete_evt(struct hci_dev *hdev, void *data, 4926 struct sk_buff *skb) 4927 { 4928 struct hci_ev_sync_conn_complete *ev = data; 4929 struct hci_conn *conn; 4930 u8 status = ev->status; 4931 4932 switch (ev->link_type) { 4933 case SCO_LINK: 4934 case ESCO_LINK: 4935 break; 4936 default: 4937 /* As per Core 5.3 Vol 4 Part E 7.7.35 (p.2219), Link_Type 4938 * for HCI_Synchronous_Connection_Complete is limited to 4939 * either SCO or eSCO 4940 */ 4941 bt_dev_err(hdev, "Ignoring connect complete event for invalid link type"); 4942 return; 4943 } 4944 4945 bt_dev_dbg(hdev, "status 0x%2.2x", status); 4946 4947 hci_dev_lock(hdev); 4948 4949 conn = hci_conn_hash_lookup_ba(hdev, ev->link_type, &ev->bdaddr); 4950 if (!conn) { 4951 if (ev->link_type == ESCO_LINK) 4952 goto unlock; 4953 4954 /* When the link type in the event indicates SCO connection 4955 * and lookup of the connection object fails, then check 4956 * if an eSCO connection object exists. 4957 * 4958 * The core limits the synchronous connections to either 4959 * SCO or eSCO. The eSCO connection is preferred and tried 4960 * to be setup first and until successfully established, 4961 * the link type will be hinted as eSCO. 4962 */ 4963 conn = hci_conn_hash_lookup_ba(hdev, ESCO_LINK, &ev->bdaddr); 4964 if (!conn) 4965 goto unlock; 4966 } 4967 4968 /* The HCI_Synchronous_Connection_Complete event is only sent once per connection. 4969 * Processing it more than once per connection can corrupt kernel memory. 4970 * 4971 * As the connection handle is set here for the first time, it indicates 4972 * whether the connection is already set up. 4973 */ 4974 if (!HCI_CONN_HANDLE_UNSET(conn->handle)) { 4975 bt_dev_err(hdev, "Ignoring HCI_Sync_Conn_Complete event for existing connection"); 4976 goto unlock; 4977 } 4978 4979 switch (status) { 4980 case 0x00: 4981 status = hci_conn_set_handle(conn, __le16_to_cpu(ev->handle)); 4982 if (status) { 4983 conn->state = BT_CLOSED; 4984 break; 4985 } 4986 4987 conn->state = BT_CONNECTED; 4988 conn->type = ev->link_type; 4989 4990 hci_debugfs_create_conn(conn); 4991 hci_conn_add_sysfs(conn); 4992 break; 4993 4994 case 0x10: /* Connection Accept Timeout */ 4995 case 0x0d: /* Connection Rejected due to Limited Resources */ 4996 case 0x11: /* Unsupported Feature or Parameter Value */ 4997 case 0x1c: /* SCO interval rejected */ 4998 case 0x1a: /* Unsupported Remote Feature */ 4999 case 0x1e: /* Invalid LMP Parameters */ 5000 case 0x1f: /* Unspecified error */ 5001 case 0x20: /* Unsupported LMP Parameter value */ 5002 if (conn->out) { 5003 conn->pkt_type = (hdev->esco_type & SCO_ESCO_MASK) | 5004 (hdev->esco_type & EDR_ESCO_MASK); 5005 if (hci_setup_sync(conn, conn->parent->handle)) 5006 goto unlock; 5007 } 5008 fallthrough; 5009 5010 default: 5011 conn->state = BT_CLOSED; 5012 break; 5013 } 5014 5015 bt_dev_dbg(hdev, "SCO connected with air mode: %02x", ev->air_mode); 5016 /* Notify only in case of SCO over HCI transport data path which 5017 * is zero and non-zero value shall be non-HCI transport data path 5018 */ 5019 if (conn->codec.data_path == 0 && hdev->notify) { 5020 switch (ev->air_mode) { 5021 case 0x02: 5022 hdev->notify(hdev, HCI_NOTIFY_ENABLE_SCO_CVSD); 5023 break; 5024 case 0x03: 5025 hdev->notify(hdev, HCI_NOTIFY_ENABLE_SCO_TRANSP); 5026 break; 5027 } 5028 } 5029 5030 hci_connect_cfm(conn, status); 5031 if (status) 5032 hci_conn_del(conn); 5033 5034 unlock: 5035 hci_dev_unlock(hdev); 5036 } 5037 5038 static inline size_t eir_get_length(u8 *eir, size_t eir_len) 5039 { 5040 size_t parsed = 0; 5041 5042 while (parsed < eir_len) { 5043 u8 field_len = eir[0]; 5044 5045 if (field_len == 0) 5046 return parsed; 5047 5048 parsed += field_len + 1; 5049 eir += field_len + 1; 5050 } 5051 5052 return eir_len; 5053 } 5054 5055 static void hci_extended_inquiry_result_evt(struct hci_dev *hdev, void *edata, 5056 struct sk_buff *skb) 5057 { 5058 struct hci_ev_ext_inquiry_result *ev = edata; 5059 struct inquiry_data data; 5060 size_t eir_len; 5061 int i; 5062 5063 if (!hci_ev_skb_pull(hdev, skb, HCI_EV_EXTENDED_INQUIRY_RESULT, 5064 flex_array_size(ev, info, ev->num))) 5065 return; 5066 5067 bt_dev_dbg(hdev, "num %d", ev->num); 5068 5069 if (!ev->num) 5070 return; 5071 5072 if (hci_dev_test_flag(hdev, HCI_PERIODIC_INQ)) 5073 return; 5074 5075 hci_dev_lock(hdev); 5076 5077 for (i = 0; i < ev->num; i++) { 5078 struct extended_inquiry_info *info = &ev->info[i]; 5079 u32 flags; 5080 bool name_known; 5081 5082 bacpy(&data.bdaddr, &info->bdaddr); 5083 data.pscan_rep_mode = info->pscan_rep_mode; 5084 data.pscan_period_mode = info->pscan_period_mode; 5085 data.pscan_mode = 0x00; 5086 memcpy(data.dev_class, info->dev_class, 3); 5087 data.clock_offset = info->clock_offset; 5088 data.rssi = info->rssi; 5089 data.ssp_mode = 0x01; 5090 5091 if (hci_dev_test_flag(hdev, HCI_MGMT)) 5092 name_known = eir_get_data(info->data, 5093 sizeof(info->data), 5094 EIR_NAME_COMPLETE, NULL); 5095 else 5096 name_known = true; 5097 5098 flags = hci_inquiry_cache_update(hdev, &data, name_known); 5099 5100 eir_len = eir_get_length(info->data, sizeof(info->data)); 5101 5102 mgmt_device_found(hdev, &info->bdaddr, ACL_LINK, 0x00, 5103 info->dev_class, info->rssi, 5104 flags, info->data, eir_len, NULL, 0, 0); 5105 } 5106 5107 hci_dev_unlock(hdev); 5108 } 5109 5110 static void hci_key_refresh_complete_evt(struct hci_dev *hdev, void *data, 5111 struct sk_buff *skb) 5112 { 5113 struct hci_ev_key_refresh_complete *ev = data; 5114 struct hci_conn *conn; 5115 5116 bt_dev_dbg(hdev, "status 0x%2.2x handle 0x%4.4x", ev->status, 5117 __le16_to_cpu(ev->handle)); 5118 5119 hci_dev_lock(hdev); 5120 5121 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle)); 5122 if (!conn) 5123 goto unlock; 5124 5125 /* For BR/EDR the necessary steps are taken through the 5126 * auth_complete event. 5127 */ 5128 if (conn->type != LE_LINK) 5129 goto unlock; 5130 5131 if (!ev->status) 5132 conn->sec_level = conn->pending_sec_level; 5133 5134 clear_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags); 5135 5136 if (ev->status && conn->state == BT_CONNECTED) { 5137 hci_disconnect(conn, HCI_ERROR_AUTH_FAILURE); 5138 hci_conn_drop(conn); 5139 goto unlock; 5140 } 5141 5142 if (conn->state == BT_CONFIG) { 5143 if (!ev->status) 5144 conn->state = BT_CONNECTED; 5145 5146 hci_connect_cfm(conn, ev->status); 5147 hci_conn_drop(conn); 5148 } else { 5149 hci_auth_cfm(conn, ev->status); 5150 5151 hci_conn_hold(conn); 5152 conn->disc_timeout = HCI_DISCONN_TIMEOUT; 5153 hci_conn_drop(conn); 5154 } 5155 5156 unlock: 5157 hci_dev_unlock(hdev); 5158 } 5159 5160 static u8 hci_get_auth_req(struct hci_conn *conn) 5161 { 5162 /* If remote requests no-bonding follow that lead */ 5163 if (conn->remote_auth == HCI_AT_NO_BONDING || 5164 conn->remote_auth == HCI_AT_NO_BONDING_MITM) 5165 return conn->remote_auth | (conn->auth_type & 0x01); 5166 5167 /* If both remote and local have enough IO capabilities, require 5168 * MITM protection 5169 */ 5170 if (conn->remote_cap != HCI_IO_NO_INPUT_OUTPUT && 5171 conn->io_capability != HCI_IO_NO_INPUT_OUTPUT) 5172 return conn->remote_auth | 0x01; 5173 5174 /* No MITM protection possible so ignore remote requirement */ 5175 return (conn->remote_auth & ~0x01) | (conn->auth_type & 0x01); 5176 } 5177 5178 static u8 bredr_oob_data_present(struct hci_conn *conn) 5179 { 5180 struct hci_dev *hdev = conn->hdev; 5181 struct oob_data *data; 5182 5183 data = hci_find_remote_oob_data(hdev, &conn->dst, BDADDR_BREDR); 5184 if (!data) 5185 return 0x00; 5186 5187 if (bredr_sc_enabled(hdev)) { 5188 /* When Secure Connections is enabled, then just 5189 * return the present value stored with the OOB 5190 * data. The stored value contains the right present 5191 * information. However it can only be trusted when 5192 * not in Secure Connection Only mode. 5193 */ 5194 if (!hci_dev_test_flag(hdev, HCI_SC_ONLY)) 5195 return data->present; 5196 5197 /* When Secure Connections Only mode is enabled, then 5198 * the P-256 values are required. If they are not 5199 * available, then do not declare that OOB data is 5200 * present. 5201 */ 5202 if (!crypto_memneq(data->rand256, ZERO_KEY, 16) || 5203 !crypto_memneq(data->hash256, ZERO_KEY, 16)) 5204 return 0x00; 5205 5206 return 0x02; 5207 } 5208 5209 /* When Secure Connections is not enabled or actually 5210 * not supported by the hardware, then check that if 5211 * P-192 data values are present. 5212 */ 5213 if (!crypto_memneq(data->rand192, ZERO_KEY, 16) || 5214 !crypto_memneq(data->hash192, ZERO_KEY, 16)) 5215 return 0x00; 5216 5217 return 0x01; 5218 } 5219 5220 static void hci_io_capa_request_evt(struct hci_dev *hdev, void *data, 5221 struct sk_buff *skb) 5222 { 5223 struct hci_ev_io_capa_request *ev = data; 5224 struct hci_conn *conn; 5225 5226 bt_dev_dbg(hdev, ""); 5227 5228 hci_dev_lock(hdev); 5229 5230 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr); 5231 if (!conn || !hci_dev_test_flag(hdev, HCI_SSP_ENABLED)) 5232 goto unlock; 5233 5234 /* Assume remote supports SSP since it has triggered this event */ 5235 set_bit(HCI_CONN_SSP_ENABLED, &conn->flags); 5236 5237 hci_conn_hold(conn); 5238 5239 if (!hci_dev_test_flag(hdev, HCI_MGMT)) 5240 goto unlock; 5241 5242 /* Allow pairing if we're pairable, the initiators of the 5243 * pairing or if the remote is not requesting bonding. 5244 */ 5245 if (hci_dev_test_flag(hdev, HCI_BONDABLE) || 5246 test_bit(HCI_CONN_AUTH_INITIATOR, &conn->flags) || 5247 (conn->remote_auth & ~0x01) == HCI_AT_NO_BONDING) { 5248 struct hci_cp_io_capability_reply cp; 5249 5250 bacpy(&cp.bdaddr, &ev->bdaddr); 5251 /* Change the IO capability from KeyboardDisplay 5252 * to DisplayYesNo as it is not supported by BT spec. */ 5253 cp.capability = (conn->io_capability == 0x04) ? 5254 HCI_IO_DISPLAY_YESNO : conn->io_capability; 5255 5256 /* If we are initiators, there is no remote information yet */ 5257 if (conn->remote_auth == 0xff) { 5258 /* Request MITM protection if our IO caps allow it 5259 * except for the no-bonding case. 5260 */ 5261 if (conn->io_capability != HCI_IO_NO_INPUT_OUTPUT && 5262 conn->auth_type != HCI_AT_NO_BONDING) 5263 conn->auth_type |= 0x01; 5264 } else { 5265 conn->auth_type = hci_get_auth_req(conn); 5266 } 5267 5268 /* If we're not bondable, force one of the non-bondable 5269 * authentication requirement values. 5270 */ 5271 if (!hci_dev_test_flag(hdev, HCI_BONDABLE)) 5272 conn->auth_type &= HCI_AT_NO_BONDING_MITM; 5273 5274 cp.authentication = conn->auth_type; 5275 cp.oob_data = bredr_oob_data_present(conn); 5276 5277 hci_send_cmd(hdev, HCI_OP_IO_CAPABILITY_REPLY, 5278 sizeof(cp), &cp); 5279 } else { 5280 struct hci_cp_io_capability_neg_reply cp; 5281 5282 bacpy(&cp.bdaddr, &ev->bdaddr); 5283 cp.reason = HCI_ERROR_PAIRING_NOT_ALLOWED; 5284 5285 hci_send_cmd(hdev, HCI_OP_IO_CAPABILITY_NEG_REPLY, 5286 sizeof(cp), &cp); 5287 } 5288 5289 unlock: 5290 hci_dev_unlock(hdev); 5291 } 5292 5293 static void hci_io_capa_reply_evt(struct hci_dev *hdev, void *data, 5294 struct sk_buff *skb) 5295 { 5296 struct hci_ev_io_capa_reply *ev = data; 5297 struct hci_conn *conn; 5298 5299 bt_dev_dbg(hdev, ""); 5300 5301 hci_dev_lock(hdev); 5302 5303 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr); 5304 if (!conn) 5305 goto unlock; 5306 5307 conn->remote_cap = ev->capability; 5308 conn->remote_auth = ev->authentication; 5309 5310 unlock: 5311 hci_dev_unlock(hdev); 5312 } 5313 5314 static void hci_user_confirm_request_evt(struct hci_dev *hdev, void *data, 5315 struct sk_buff *skb) 5316 { 5317 struct hci_ev_user_confirm_req *ev = data; 5318 int loc_mitm, rem_mitm, confirm_hint = 0; 5319 struct hci_conn *conn; 5320 5321 bt_dev_dbg(hdev, ""); 5322 5323 hci_dev_lock(hdev); 5324 5325 if (!hci_dev_test_flag(hdev, HCI_MGMT)) 5326 goto unlock; 5327 5328 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr); 5329 if (!conn) 5330 goto unlock; 5331 5332 loc_mitm = (conn->auth_type & 0x01); 5333 rem_mitm = (conn->remote_auth & 0x01); 5334 5335 /* If we require MITM but the remote device can't provide that 5336 * (it has NoInputNoOutput) then reject the confirmation 5337 * request. We check the security level here since it doesn't 5338 * necessarily match conn->auth_type. 5339 */ 5340 if (conn->pending_sec_level > BT_SECURITY_MEDIUM && 5341 conn->remote_cap == HCI_IO_NO_INPUT_OUTPUT) { 5342 bt_dev_dbg(hdev, "Rejecting request: remote device can't provide MITM"); 5343 hci_send_cmd(hdev, HCI_OP_USER_CONFIRM_NEG_REPLY, 5344 sizeof(ev->bdaddr), &ev->bdaddr); 5345 goto unlock; 5346 } 5347 5348 /* If no side requires MITM protection; use JUST_CFM method */ 5349 if ((!loc_mitm || conn->remote_cap == HCI_IO_NO_INPUT_OUTPUT) && 5350 (!rem_mitm || conn->io_capability == HCI_IO_NO_INPUT_OUTPUT)) { 5351 5352 /* If we're not the initiator of request authorization and the 5353 * local IO capability is not NoInputNoOutput, use JUST_WORKS 5354 * method (mgmt_user_confirm with confirm_hint set to 1). 5355 */ 5356 if (!test_bit(HCI_CONN_AUTH_PEND, &conn->flags) && 5357 conn->io_capability != HCI_IO_NO_INPUT_OUTPUT) { 5358 bt_dev_dbg(hdev, "Confirming auto-accept as acceptor"); 5359 confirm_hint = 1; 5360 goto confirm; 5361 } 5362 5363 /* If there already exists link key in local host, leave the 5364 * decision to user space since the remote device could be 5365 * legitimate or malicious. 5366 */ 5367 if (hci_find_link_key(hdev, &ev->bdaddr)) { 5368 bt_dev_dbg(hdev, "Local host already has link key"); 5369 confirm_hint = 1; 5370 goto confirm; 5371 } 5372 5373 BT_DBG("Auto-accept of user confirmation with %ums delay", 5374 hdev->auto_accept_delay); 5375 5376 if (hdev->auto_accept_delay > 0) { 5377 int delay = msecs_to_jiffies(hdev->auto_accept_delay); 5378 queue_delayed_work(conn->hdev->workqueue, 5379 &conn->auto_accept_work, delay); 5380 goto unlock; 5381 } 5382 5383 hci_send_cmd(hdev, HCI_OP_USER_CONFIRM_REPLY, 5384 sizeof(ev->bdaddr), &ev->bdaddr); 5385 goto unlock; 5386 } 5387 5388 confirm: 5389 mgmt_user_confirm_request(hdev, &ev->bdaddr, ACL_LINK, 0, 5390 le32_to_cpu(ev->passkey), confirm_hint); 5391 5392 unlock: 5393 hci_dev_unlock(hdev); 5394 } 5395 5396 static void hci_user_passkey_request_evt(struct hci_dev *hdev, void *data, 5397 struct sk_buff *skb) 5398 { 5399 struct hci_ev_user_passkey_req *ev = data; 5400 5401 bt_dev_dbg(hdev, ""); 5402 5403 if (hci_dev_test_flag(hdev, HCI_MGMT)) 5404 mgmt_user_passkey_request(hdev, &ev->bdaddr, ACL_LINK, 0); 5405 } 5406 5407 static void hci_user_passkey_notify_evt(struct hci_dev *hdev, void *data, 5408 struct sk_buff *skb) 5409 { 5410 struct hci_ev_user_passkey_notify *ev = data; 5411 struct hci_conn *conn; 5412 5413 bt_dev_dbg(hdev, ""); 5414 5415 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr); 5416 if (!conn) 5417 return; 5418 5419 conn->passkey_notify = __le32_to_cpu(ev->passkey); 5420 conn->passkey_entered = 0; 5421 5422 if (hci_dev_test_flag(hdev, HCI_MGMT)) 5423 mgmt_user_passkey_notify(hdev, &conn->dst, conn->type, 5424 conn->dst_type, conn->passkey_notify, 5425 conn->passkey_entered); 5426 } 5427 5428 static void hci_keypress_notify_evt(struct hci_dev *hdev, void *data, 5429 struct sk_buff *skb) 5430 { 5431 struct hci_ev_keypress_notify *ev = data; 5432 struct hci_conn *conn; 5433 5434 bt_dev_dbg(hdev, ""); 5435 5436 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr); 5437 if (!conn) 5438 return; 5439 5440 switch (ev->type) { 5441 case HCI_KEYPRESS_STARTED: 5442 conn->passkey_entered = 0; 5443 return; 5444 5445 case HCI_KEYPRESS_ENTERED: 5446 conn->passkey_entered++; 5447 break; 5448 5449 case HCI_KEYPRESS_ERASED: 5450 conn->passkey_entered--; 5451 break; 5452 5453 case HCI_KEYPRESS_CLEARED: 5454 conn->passkey_entered = 0; 5455 break; 5456 5457 case HCI_KEYPRESS_COMPLETED: 5458 return; 5459 } 5460 5461 if (hci_dev_test_flag(hdev, HCI_MGMT)) 5462 mgmt_user_passkey_notify(hdev, &conn->dst, conn->type, 5463 conn->dst_type, conn->passkey_notify, 5464 conn->passkey_entered); 5465 } 5466 5467 static void hci_simple_pair_complete_evt(struct hci_dev *hdev, void *data, 5468 struct sk_buff *skb) 5469 { 5470 struct hci_ev_simple_pair_complete *ev = data; 5471 struct hci_conn *conn; 5472 5473 bt_dev_dbg(hdev, ""); 5474 5475 hci_dev_lock(hdev); 5476 5477 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr); 5478 if (!conn || !hci_conn_ssp_enabled(conn)) 5479 goto unlock; 5480 5481 /* Reset the authentication requirement to unknown */ 5482 conn->remote_auth = 0xff; 5483 5484 /* To avoid duplicate auth_failed events to user space we check 5485 * the HCI_CONN_AUTH_PEND flag which will be set if we 5486 * initiated the authentication. A traditional auth_complete 5487 * event gets always produced as initiator and is also mapped to 5488 * the mgmt_auth_failed event */ 5489 if (!test_bit(HCI_CONN_AUTH_PEND, &conn->flags) && ev->status) 5490 mgmt_auth_failed(conn, ev->status); 5491 5492 hci_conn_drop(conn); 5493 5494 unlock: 5495 hci_dev_unlock(hdev); 5496 } 5497 5498 static void hci_remote_host_features_evt(struct hci_dev *hdev, void *data, 5499 struct sk_buff *skb) 5500 { 5501 struct hci_ev_remote_host_features *ev = data; 5502 struct inquiry_entry *ie; 5503 struct hci_conn *conn; 5504 5505 bt_dev_dbg(hdev, ""); 5506 5507 hci_dev_lock(hdev); 5508 5509 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr); 5510 if (conn) 5511 memcpy(conn->features[1], ev->features, 8); 5512 5513 ie = hci_inquiry_cache_lookup(hdev, &ev->bdaddr); 5514 if (ie) 5515 ie->data.ssp_mode = (ev->features[0] & LMP_HOST_SSP); 5516 5517 hci_dev_unlock(hdev); 5518 } 5519 5520 static void hci_remote_oob_data_request_evt(struct hci_dev *hdev, void *edata, 5521 struct sk_buff *skb) 5522 { 5523 struct hci_ev_remote_oob_data_request *ev = edata; 5524 struct oob_data *data; 5525 5526 bt_dev_dbg(hdev, ""); 5527 5528 hci_dev_lock(hdev); 5529 5530 if (!hci_dev_test_flag(hdev, HCI_MGMT)) 5531 goto unlock; 5532 5533 data = hci_find_remote_oob_data(hdev, &ev->bdaddr, BDADDR_BREDR); 5534 if (!data) { 5535 struct hci_cp_remote_oob_data_neg_reply cp; 5536 5537 bacpy(&cp.bdaddr, &ev->bdaddr); 5538 hci_send_cmd(hdev, HCI_OP_REMOTE_OOB_DATA_NEG_REPLY, 5539 sizeof(cp), &cp); 5540 goto unlock; 5541 } 5542 5543 if (bredr_sc_enabled(hdev)) { 5544 struct hci_cp_remote_oob_ext_data_reply cp; 5545 5546 bacpy(&cp.bdaddr, &ev->bdaddr); 5547 if (hci_dev_test_flag(hdev, HCI_SC_ONLY)) { 5548 memset(cp.hash192, 0, sizeof(cp.hash192)); 5549 memset(cp.rand192, 0, sizeof(cp.rand192)); 5550 } else { 5551 memcpy(cp.hash192, data->hash192, sizeof(cp.hash192)); 5552 memcpy(cp.rand192, data->rand192, sizeof(cp.rand192)); 5553 } 5554 memcpy(cp.hash256, data->hash256, sizeof(cp.hash256)); 5555 memcpy(cp.rand256, data->rand256, sizeof(cp.rand256)); 5556 5557 hci_send_cmd(hdev, HCI_OP_REMOTE_OOB_EXT_DATA_REPLY, 5558 sizeof(cp), &cp); 5559 } else { 5560 struct hci_cp_remote_oob_data_reply cp; 5561 5562 bacpy(&cp.bdaddr, &ev->bdaddr); 5563 memcpy(cp.hash, data->hash192, sizeof(cp.hash)); 5564 memcpy(cp.rand, data->rand192, sizeof(cp.rand)); 5565 5566 hci_send_cmd(hdev, HCI_OP_REMOTE_OOB_DATA_REPLY, 5567 sizeof(cp), &cp); 5568 } 5569 5570 unlock: 5571 hci_dev_unlock(hdev); 5572 } 5573 5574 static void le_conn_update_addr(struct hci_conn *conn, bdaddr_t *bdaddr, 5575 u8 bdaddr_type, bdaddr_t *local_rpa) 5576 { 5577 if (conn->out) { 5578 conn->dst_type = bdaddr_type; 5579 conn->resp_addr_type = bdaddr_type; 5580 bacpy(&conn->resp_addr, bdaddr); 5581 5582 /* Check if the controller has set a Local RPA then it must be 5583 * used instead or hdev->rpa. 5584 */ 5585 if (local_rpa && bacmp(local_rpa, BDADDR_ANY)) { 5586 conn->init_addr_type = ADDR_LE_DEV_RANDOM; 5587 bacpy(&conn->init_addr, local_rpa); 5588 } else if (hci_dev_test_flag(conn->hdev, HCI_PRIVACY)) { 5589 conn->init_addr_type = ADDR_LE_DEV_RANDOM; 5590 bacpy(&conn->init_addr, &conn->hdev->rpa); 5591 } else { 5592 hci_copy_identity_address(conn->hdev, &conn->init_addr, 5593 &conn->init_addr_type); 5594 } 5595 } else { 5596 conn->resp_addr_type = conn->hdev->adv_addr_type; 5597 /* Check if the controller has set a Local RPA then it must be 5598 * used instead or hdev->rpa. 5599 */ 5600 if (local_rpa && bacmp(local_rpa, BDADDR_ANY)) { 5601 conn->resp_addr_type = ADDR_LE_DEV_RANDOM; 5602 bacpy(&conn->resp_addr, local_rpa); 5603 } else if (conn->hdev->adv_addr_type == ADDR_LE_DEV_RANDOM) { 5604 /* In case of ext adv, resp_addr will be updated in 5605 * Adv Terminated event. 5606 */ 5607 if (!ext_adv_capable(conn->hdev)) 5608 bacpy(&conn->resp_addr, 5609 &conn->hdev->random_addr); 5610 } else { 5611 bacpy(&conn->resp_addr, &conn->hdev->bdaddr); 5612 } 5613 5614 conn->init_addr_type = bdaddr_type; 5615 bacpy(&conn->init_addr, bdaddr); 5616 5617 /* For incoming connections, set the default minimum 5618 * and maximum connection interval. They will be used 5619 * to check if the parameters are in range and if not 5620 * trigger the connection update procedure. 5621 */ 5622 conn->le_conn_min_interval = conn->hdev->le_conn_min_interval; 5623 conn->le_conn_max_interval = conn->hdev->le_conn_max_interval; 5624 } 5625 } 5626 5627 static void le_conn_complete_evt(struct hci_dev *hdev, u8 status, 5628 bdaddr_t *bdaddr, u8 bdaddr_type, 5629 bdaddr_t *local_rpa, u8 role, u16 handle, 5630 u16 interval, u16 latency, 5631 u16 supervision_timeout) 5632 { 5633 struct hci_conn_params *params; 5634 struct hci_conn *conn; 5635 struct smp_irk *irk; 5636 u8 addr_type; 5637 5638 hci_dev_lock(hdev); 5639 5640 /* All controllers implicitly stop advertising in the event of a 5641 * connection, so ensure that the state bit is cleared. 5642 */ 5643 hci_dev_clear_flag(hdev, HCI_LE_ADV); 5644 5645 conn = hci_conn_hash_lookup_ba(hdev, LE_LINK, bdaddr); 5646 if (!conn) { 5647 /* In case of error status and there is no connection pending 5648 * just unlock as there is nothing to cleanup. 5649 */ 5650 if (status) 5651 goto unlock; 5652 5653 conn = hci_conn_add_unset(hdev, LE_LINK, bdaddr, role); 5654 if (IS_ERR(conn)) { 5655 bt_dev_err(hdev, "connection err: %ld", PTR_ERR(conn)); 5656 goto unlock; 5657 } 5658 5659 conn->dst_type = bdaddr_type; 5660 5661 /* If we didn't have a hci_conn object previously 5662 * but we're in central role this must be something 5663 * initiated using an accept list. Since accept list based 5664 * connections are not "first class citizens" we don't 5665 * have full tracking of them. Therefore, we go ahead 5666 * with a "best effort" approach of determining the 5667 * initiator address based on the HCI_PRIVACY flag. 5668 */ 5669 if (conn->out) { 5670 conn->resp_addr_type = bdaddr_type; 5671 bacpy(&conn->resp_addr, bdaddr); 5672 if (hci_dev_test_flag(hdev, HCI_PRIVACY)) { 5673 conn->init_addr_type = ADDR_LE_DEV_RANDOM; 5674 bacpy(&conn->init_addr, &hdev->rpa); 5675 } else { 5676 hci_copy_identity_address(hdev, 5677 &conn->init_addr, 5678 &conn->init_addr_type); 5679 } 5680 } 5681 } else { 5682 cancel_delayed_work(&conn->le_conn_timeout); 5683 } 5684 5685 /* The HCI_LE_Connection_Complete event is only sent once per connection. 5686 * Processing it more than once per connection can corrupt kernel memory. 5687 * 5688 * As the connection handle is set here for the first time, it indicates 5689 * whether the connection is already set up. 5690 */ 5691 if (!HCI_CONN_HANDLE_UNSET(conn->handle)) { 5692 bt_dev_err(hdev, "Ignoring HCI_Connection_Complete for existing connection"); 5693 goto unlock; 5694 } 5695 5696 le_conn_update_addr(conn, bdaddr, bdaddr_type, local_rpa); 5697 5698 /* Lookup the identity address from the stored connection 5699 * address and address type. 5700 * 5701 * When establishing connections to an identity address, the 5702 * connection procedure will store the resolvable random 5703 * address first. Now if it can be converted back into the 5704 * identity address, start using the identity address from 5705 * now on. 5706 */ 5707 irk = hci_get_irk(hdev, &conn->dst, conn->dst_type); 5708 if (irk) { 5709 bacpy(&conn->dst, &irk->bdaddr); 5710 conn->dst_type = irk->addr_type; 5711 } 5712 5713 conn->dst_type = ev_bdaddr_type(hdev, conn->dst_type, NULL); 5714 5715 /* All connection failure handling is taken care of by the 5716 * hci_conn_failed function which is triggered by the HCI 5717 * request completion callbacks used for connecting. 5718 */ 5719 if (status || hci_conn_set_handle(conn, handle)) 5720 goto unlock; 5721 5722 /* Drop the connection if it has been aborted */ 5723 if (test_bit(HCI_CONN_CANCEL, &conn->flags)) { 5724 hci_conn_drop(conn); 5725 goto unlock; 5726 } 5727 5728 if (conn->dst_type == ADDR_LE_DEV_PUBLIC) 5729 addr_type = BDADDR_LE_PUBLIC; 5730 else 5731 addr_type = BDADDR_LE_RANDOM; 5732 5733 /* Drop the connection if the device is blocked */ 5734 if (hci_bdaddr_list_lookup(&hdev->reject_list, &conn->dst, addr_type)) { 5735 hci_conn_drop(conn); 5736 goto unlock; 5737 } 5738 5739 mgmt_device_connected(hdev, conn, NULL, 0); 5740 5741 conn->sec_level = BT_SECURITY_LOW; 5742 conn->state = BT_CONFIG; 5743 5744 /* Store current advertising instance as connection advertising instance 5745 * when sotfware rotation is in use so it can be re-enabled when 5746 * disconnected. 5747 */ 5748 if (!ext_adv_capable(hdev)) 5749 conn->adv_instance = hdev->cur_adv_instance; 5750 5751 conn->le_conn_interval = interval; 5752 conn->le_conn_latency = latency; 5753 conn->le_supv_timeout = supervision_timeout; 5754 5755 hci_debugfs_create_conn(conn); 5756 hci_conn_add_sysfs(conn); 5757 5758 /* The remote features procedure is defined for central 5759 * role only. So only in case of an initiated connection 5760 * request the remote features. 5761 * 5762 * If the local controller supports peripheral-initiated features 5763 * exchange, then requesting the remote features in peripheral 5764 * role is possible. Otherwise just transition into the 5765 * connected state without requesting the remote features. 5766 */ 5767 if (conn->out || 5768 (hdev->le_features[0] & HCI_LE_PERIPHERAL_FEATURES)) { 5769 struct hci_cp_le_read_remote_features cp; 5770 5771 cp.handle = __cpu_to_le16(conn->handle); 5772 5773 hci_send_cmd(hdev, HCI_OP_LE_READ_REMOTE_FEATURES, 5774 sizeof(cp), &cp); 5775 5776 hci_conn_hold(conn); 5777 } else { 5778 conn->state = BT_CONNECTED; 5779 hci_connect_cfm(conn, status); 5780 } 5781 5782 params = hci_pend_le_action_lookup(&hdev->pend_le_conns, &conn->dst, 5783 conn->dst_type); 5784 if (params) { 5785 hci_pend_le_list_del_init(params); 5786 if (params->conn) { 5787 hci_conn_drop(params->conn); 5788 hci_conn_put(params->conn); 5789 params->conn = NULL; 5790 } 5791 } 5792 5793 unlock: 5794 hci_update_passive_scan(hdev); 5795 hci_dev_unlock(hdev); 5796 } 5797 5798 static void hci_le_conn_complete_evt(struct hci_dev *hdev, void *data, 5799 struct sk_buff *skb) 5800 { 5801 struct hci_ev_le_conn_complete *ev = data; 5802 5803 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 5804 5805 le_conn_complete_evt(hdev, ev->status, &ev->bdaddr, ev->bdaddr_type, 5806 NULL, ev->role, le16_to_cpu(ev->handle), 5807 le16_to_cpu(ev->interval), 5808 le16_to_cpu(ev->latency), 5809 le16_to_cpu(ev->supervision_timeout)); 5810 } 5811 5812 static void hci_le_enh_conn_complete_evt(struct hci_dev *hdev, void *data, 5813 struct sk_buff *skb) 5814 { 5815 struct hci_ev_le_enh_conn_complete *ev = data; 5816 5817 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 5818 5819 le_conn_complete_evt(hdev, ev->status, &ev->bdaddr, ev->bdaddr_type, 5820 &ev->local_rpa, ev->role, le16_to_cpu(ev->handle), 5821 le16_to_cpu(ev->interval), 5822 le16_to_cpu(ev->latency), 5823 le16_to_cpu(ev->supervision_timeout)); 5824 } 5825 5826 static void hci_le_ext_adv_term_evt(struct hci_dev *hdev, void *data, 5827 struct sk_buff *skb) 5828 { 5829 struct hci_evt_le_ext_adv_set_term *ev = data; 5830 struct hci_conn *conn; 5831 struct adv_info *adv, *n; 5832 5833 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 5834 5835 /* The Bluetooth Core 5.3 specification clearly states that this event 5836 * shall not be sent when the Host disables the advertising set. So in 5837 * case of HCI_ERROR_CANCELLED_BY_HOST, just ignore the event. 5838 * 5839 * When the Host disables an advertising set, all cleanup is done via 5840 * its command callback and not needed to be duplicated here. 5841 */ 5842 if (ev->status == HCI_ERROR_CANCELLED_BY_HOST) { 5843 bt_dev_warn_ratelimited(hdev, "Unexpected advertising set terminated event"); 5844 return; 5845 } 5846 5847 hci_dev_lock(hdev); 5848 5849 adv = hci_find_adv_instance(hdev, ev->handle); 5850 5851 if (ev->status) { 5852 if (!adv) 5853 goto unlock; 5854 5855 /* Remove advertising as it has been terminated */ 5856 hci_remove_adv_instance(hdev, ev->handle); 5857 mgmt_advertising_removed(NULL, hdev, ev->handle); 5858 5859 list_for_each_entry_safe(adv, n, &hdev->adv_instances, list) { 5860 if (adv->enabled) 5861 goto unlock; 5862 } 5863 5864 /* We are no longer advertising, clear HCI_LE_ADV */ 5865 hci_dev_clear_flag(hdev, HCI_LE_ADV); 5866 goto unlock; 5867 } 5868 5869 if (adv) 5870 adv->enabled = false; 5871 5872 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->conn_handle)); 5873 if (conn) { 5874 /* Store handle in the connection so the correct advertising 5875 * instance can be re-enabled when disconnected. 5876 */ 5877 conn->adv_instance = ev->handle; 5878 5879 if (hdev->adv_addr_type != ADDR_LE_DEV_RANDOM || 5880 bacmp(&conn->resp_addr, BDADDR_ANY)) 5881 goto unlock; 5882 5883 if (!ev->handle) { 5884 bacpy(&conn->resp_addr, &hdev->random_addr); 5885 goto unlock; 5886 } 5887 5888 if (adv) 5889 bacpy(&conn->resp_addr, &adv->random_addr); 5890 } 5891 5892 unlock: 5893 hci_dev_unlock(hdev); 5894 } 5895 5896 static void hci_le_conn_update_complete_evt(struct hci_dev *hdev, void *data, 5897 struct sk_buff *skb) 5898 { 5899 struct hci_ev_le_conn_update_complete *ev = data; 5900 struct hci_conn *conn; 5901 5902 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 5903 5904 if (ev->status) 5905 return; 5906 5907 hci_dev_lock(hdev); 5908 5909 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle)); 5910 if (conn) { 5911 conn->le_conn_interval = le16_to_cpu(ev->interval); 5912 conn->le_conn_latency = le16_to_cpu(ev->latency); 5913 conn->le_supv_timeout = le16_to_cpu(ev->supervision_timeout); 5914 } 5915 5916 hci_dev_unlock(hdev); 5917 } 5918 5919 /* This function requires the caller holds hdev->lock */ 5920 static struct hci_conn *check_pending_le_conn(struct hci_dev *hdev, 5921 bdaddr_t *addr, 5922 u8 addr_type, bool addr_resolved, 5923 u8 adv_type, u8 phy, u8 sec_phy) 5924 { 5925 struct hci_conn *conn; 5926 struct hci_conn_params *params; 5927 5928 /* If the event is not connectable don't proceed further */ 5929 if (adv_type != LE_ADV_IND && adv_type != LE_ADV_DIRECT_IND) 5930 return NULL; 5931 5932 /* Ignore if the device is blocked or hdev is suspended */ 5933 if (hci_bdaddr_list_lookup(&hdev->reject_list, addr, addr_type) || 5934 hdev->suspended) 5935 return NULL; 5936 5937 /* Most controller will fail if we try to create new connections 5938 * while we have an existing one in peripheral role. 5939 */ 5940 if (hdev->conn_hash.le_num_peripheral > 0 && 5941 (test_bit(HCI_QUIRK_BROKEN_LE_STATES, &hdev->quirks) || 5942 !(hdev->le_states[3] & 0x10))) 5943 return NULL; 5944 5945 /* If we're not connectable only connect devices that we have in 5946 * our pend_le_conns list. 5947 */ 5948 params = hci_pend_le_action_lookup(&hdev->pend_le_conns, addr, 5949 addr_type); 5950 if (!params) 5951 return NULL; 5952 5953 if (!params->explicit_connect) { 5954 switch (params->auto_connect) { 5955 case HCI_AUTO_CONN_DIRECT: 5956 /* Only devices advertising with ADV_DIRECT_IND are 5957 * triggering a connection attempt. This is allowing 5958 * incoming connections from peripheral devices. 5959 */ 5960 if (adv_type != LE_ADV_DIRECT_IND) 5961 return NULL; 5962 break; 5963 case HCI_AUTO_CONN_ALWAYS: 5964 /* Devices advertising with ADV_IND or ADV_DIRECT_IND 5965 * are triggering a connection attempt. This means 5966 * that incoming connections from peripheral device are 5967 * accepted and also outgoing connections to peripheral 5968 * devices are established when found. 5969 */ 5970 break; 5971 default: 5972 return NULL; 5973 } 5974 } 5975 5976 conn = hci_connect_le(hdev, addr, addr_type, addr_resolved, 5977 BT_SECURITY_LOW, hdev->def_le_autoconnect_timeout, 5978 HCI_ROLE_MASTER, phy, sec_phy); 5979 if (!IS_ERR(conn)) { 5980 /* If HCI_AUTO_CONN_EXPLICIT is set, conn is already owned 5981 * by higher layer that tried to connect, if no then 5982 * store the pointer since we don't really have any 5983 * other owner of the object besides the params that 5984 * triggered it. This way we can abort the connection if 5985 * the parameters get removed and keep the reference 5986 * count consistent once the connection is established. 5987 */ 5988 5989 if (!params->explicit_connect) 5990 params->conn = hci_conn_get(conn); 5991 5992 return conn; 5993 } 5994 5995 switch (PTR_ERR(conn)) { 5996 case -EBUSY: 5997 /* If hci_connect() returns -EBUSY it means there is already 5998 * an LE connection attempt going on. Since controllers don't 5999 * support more than one connection attempt at the time, we 6000 * don't consider this an error case. 6001 */ 6002 break; 6003 default: 6004 BT_DBG("Failed to connect: err %ld", PTR_ERR(conn)); 6005 return NULL; 6006 } 6007 6008 return NULL; 6009 } 6010 6011 static void process_adv_report(struct hci_dev *hdev, u8 type, bdaddr_t *bdaddr, 6012 u8 bdaddr_type, bdaddr_t *direct_addr, 6013 u8 direct_addr_type, u8 phy, u8 sec_phy, s8 rssi, 6014 u8 *data, u8 len, bool ext_adv, bool ctl_time, 6015 u64 instant) 6016 { 6017 struct discovery_state *d = &hdev->discovery; 6018 struct smp_irk *irk; 6019 struct hci_conn *conn; 6020 bool match, bdaddr_resolved; 6021 u32 flags; 6022 u8 *ptr; 6023 6024 switch (type) { 6025 case LE_ADV_IND: 6026 case LE_ADV_DIRECT_IND: 6027 case LE_ADV_SCAN_IND: 6028 case LE_ADV_NONCONN_IND: 6029 case LE_ADV_SCAN_RSP: 6030 break; 6031 default: 6032 bt_dev_err_ratelimited(hdev, "unknown advertising packet " 6033 "type: 0x%02x", type); 6034 return; 6035 } 6036 6037 if (len > max_adv_len(hdev)) { 6038 bt_dev_err_ratelimited(hdev, 6039 "adv larger than maximum supported"); 6040 return; 6041 } 6042 6043 /* Find the end of the data in case the report contains padded zero 6044 * bytes at the end causing an invalid length value. 6045 * 6046 * When data is NULL, len is 0 so there is no need for extra ptr 6047 * check as 'ptr < data + 0' is already false in such case. 6048 */ 6049 for (ptr = data; ptr < data + len && *ptr; ptr += *ptr + 1) { 6050 if (ptr + 1 + *ptr > data + len) 6051 break; 6052 } 6053 6054 /* Adjust for actual length. This handles the case when remote 6055 * device is advertising with incorrect data length. 6056 */ 6057 len = ptr - data; 6058 6059 /* If the direct address is present, then this report is from 6060 * a LE Direct Advertising Report event. In that case it is 6061 * important to see if the address is matching the local 6062 * controller address. 6063 * 6064 * If local privacy is not enable the controller shall not be 6065 * generating such event since according to its documentation it is only 6066 * valid for filter_policy 0x02 and 0x03, but the fact that it did 6067 * generate LE Direct Advertising Report means it is probably broken and 6068 * won't generate any other event which can potentially break 6069 * auto-connect logic so in case local privacy is not enable this 6070 * ignores the direct_addr so it works as a regular report. 6071 */ 6072 if (!hci_dev_test_flag(hdev, HCI_MESH) && direct_addr && 6073 hci_dev_test_flag(hdev, HCI_PRIVACY)) { 6074 direct_addr_type = ev_bdaddr_type(hdev, direct_addr_type, 6075 &bdaddr_resolved); 6076 6077 /* Only resolvable random addresses are valid for these 6078 * kind of reports and others can be ignored. 6079 */ 6080 if (!hci_bdaddr_is_rpa(direct_addr, direct_addr_type)) 6081 return; 6082 6083 /* If the local IRK of the controller does not match 6084 * with the resolvable random address provided, then 6085 * this report can be ignored. 6086 */ 6087 if (!smp_irk_matches(hdev, hdev->irk, direct_addr)) 6088 return; 6089 } 6090 6091 /* Check if we need to convert to identity address */ 6092 irk = hci_get_irk(hdev, bdaddr, bdaddr_type); 6093 if (irk) { 6094 bdaddr = &irk->bdaddr; 6095 bdaddr_type = irk->addr_type; 6096 } 6097 6098 bdaddr_type = ev_bdaddr_type(hdev, bdaddr_type, &bdaddr_resolved); 6099 6100 /* Check if we have been requested to connect to this device. 6101 * 6102 * direct_addr is set only for directed advertising reports (it is NULL 6103 * for advertising reports) and is already verified to be RPA above. 6104 */ 6105 conn = check_pending_le_conn(hdev, bdaddr, bdaddr_type, bdaddr_resolved, 6106 type, phy, sec_phy); 6107 if (!ext_adv && conn && type == LE_ADV_IND && 6108 len <= max_adv_len(hdev)) { 6109 /* Store report for later inclusion by 6110 * mgmt_device_connected 6111 */ 6112 memcpy(conn->le_adv_data, data, len); 6113 conn->le_adv_data_len = len; 6114 } 6115 6116 if (type == LE_ADV_NONCONN_IND || type == LE_ADV_SCAN_IND) 6117 flags = MGMT_DEV_FOUND_NOT_CONNECTABLE; 6118 else 6119 flags = 0; 6120 6121 /* All scan results should be sent up for Mesh systems */ 6122 if (hci_dev_test_flag(hdev, HCI_MESH)) { 6123 mgmt_device_found(hdev, bdaddr, LE_LINK, bdaddr_type, NULL, 6124 rssi, flags, data, len, NULL, 0, instant); 6125 return; 6126 } 6127 6128 /* Passive scanning shouldn't trigger any device found events, 6129 * except for devices marked as CONN_REPORT for which we do send 6130 * device found events, or advertisement monitoring requested. 6131 */ 6132 if (hdev->le_scan_type == LE_SCAN_PASSIVE) { 6133 if (type == LE_ADV_DIRECT_IND) 6134 return; 6135 6136 if (!hci_pend_le_action_lookup(&hdev->pend_le_reports, 6137 bdaddr, bdaddr_type) && 6138 idr_is_empty(&hdev->adv_monitors_idr)) 6139 return; 6140 6141 mgmt_device_found(hdev, bdaddr, LE_LINK, bdaddr_type, NULL, 6142 rssi, flags, data, len, NULL, 0, 0); 6143 return; 6144 } 6145 6146 /* When receiving a scan response, then there is no way to 6147 * know if the remote device is connectable or not. However 6148 * since scan responses are merged with a previously seen 6149 * advertising report, the flags field from that report 6150 * will be used. 6151 * 6152 * In the unlikely case that a controller just sends a scan 6153 * response event that doesn't match the pending report, then 6154 * it is marked as a standalone SCAN_RSP. 6155 */ 6156 if (type == LE_ADV_SCAN_RSP) 6157 flags = MGMT_DEV_FOUND_SCAN_RSP; 6158 6159 /* If there's nothing pending either store the data from this 6160 * event or send an immediate device found event if the data 6161 * should not be stored for later. 6162 */ 6163 if (!ext_adv && !has_pending_adv_report(hdev)) { 6164 /* If the report will trigger a SCAN_REQ store it for 6165 * later merging. 6166 */ 6167 if (type == LE_ADV_IND || type == LE_ADV_SCAN_IND) { 6168 store_pending_adv_report(hdev, bdaddr, bdaddr_type, 6169 rssi, flags, data, len); 6170 return; 6171 } 6172 6173 mgmt_device_found(hdev, bdaddr, LE_LINK, bdaddr_type, NULL, 6174 rssi, flags, data, len, NULL, 0, 0); 6175 return; 6176 } 6177 6178 /* Check if the pending report is for the same device as the new one */ 6179 match = (!bacmp(bdaddr, &d->last_adv_addr) && 6180 bdaddr_type == d->last_adv_addr_type); 6181 6182 /* If the pending data doesn't match this report or this isn't a 6183 * scan response (e.g. we got a duplicate ADV_IND) then force 6184 * sending of the pending data. 6185 */ 6186 if (type != LE_ADV_SCAN_RSP || !match) { 6187 /* Send out whatever is in the cache, but skip duplicates */ 6188 if (!match) 6189 mgmt_device_found(hdev, &d->last_adv_addr, LE_LINK, 6190 d->last_adv_addr_type, NULL, 6191 d->last_adv_rssi, d->last_adv_flags, 6192 d->last_adv_data, 6193 d->last_adv_data_len, NULL, 0, 0); 6194 6195 /* If the new report will trigger a SCAN_REQ store it for 6196 * later merging. 6197 */ 6198 if (!ext_adv && (type == LE_ADV_IND || 6199 type == LE_ADV_SCAN_IND)) { 6200 store_pending_adv_report(hdev, bdaddr, bdaddr_type, 6201 rssi, flags, data, len); 6202 return; 6203 } 6204 6205 /* The advertising reports cannot be merged, so clear 6206 * the pending report and send out a device found event. 6207 */ 6208 clear_pending_adv_report(hdev); 6209 mgmt_device_found(hdev, bdaddr, LE_LINK, bdaddr_type, NULL, 6210 rssi, flags, data, len, NULL, 0, 0); 6211 return; 6212 } 6213 6214 /* If we get here we've got a pending ADV_IND or ADV_SCAN_IND and 6215 * the new event is a SCAN_RSP. We can therefore proceed with 6216 * sending a merged device found event. 6217 */ 6218 mgmt_device_found(hdev, &d->last_adv_addr, LE_LINK, 6219 d->last_adv_addr_type, NULL, rssi, d->last_adv_flags, 6220 d->last_adv_data, d->last_adv_data_len, data, len, 0); 6221 clear_pending_adv_report(hdev); 6222 } 6223 6224 static void hci_le_adv_report_evt(struct hci_dev *hdev, void *data, 6225 struct sk_buff *skb) 6226 { 6227 struct hci_ev_le_advertising_report *ev = data; 6228 u64 instant = jiffies; 6229 6230 if (!ev->num) 6231 return; 6232 6233 hci_dev_lock(hdev); 6234 6235 while (ev->num--) { 6236 struct hci_ev_le_advertising_info *info; 6237 s8 rssi; 6238 6239 info = hci_le_ev_skb_pull(hdev, skb, 6240 HCI_EV_LE_ADVERTISING_REPORT, 6241 sizeof(*info)); 6242 if (!info) 6243 break; 6244 6245 if (!hci_le_ev_skb_pull(hdev, skb, HCI_EV_LE_ADVERTISING_REPORT, 6246 info->length + 1)) 6247 break; 6248 6249 if (info->length <= max_adv_len(hdev)) { 6250 rssi = info->data[info->length]; 6251 process_adv_report(hdev, info->type, &info->bdaddr, 6252 info->bdaddr_type, NULL, 0, 6253 HCI_ADV_PHY_1M, 0, rssi, 6254 info->data, info->length, false, 6255 false, instant); 6256 } else { 6257 bt_dev_err(hdev, "Dropping invalid advertising data"); 6258 } 6259 } 6260 6261 hci_dev_unlock(hdev); 6262 } 6263 6264 static u8 ext_evt_type_to_legacy(struct hci_dev *hdev, u16 evt_type) 6265 { 6266 if (evt_type & LE_EXT_ADV_LEGACY_PDU) { 6267 switch (evt_type) { 6268 case LE_LEGACY_ADV_IND: 6269 return LE_ADV_IND; 6270 case LE_LEGACY_ADV_DIRECT_IND: 6271 return LE_ADV_DIRECT_IND; 6272 case LE_LEGACY_ADV_SCAN_IND: 6273 return LE_ADV_SCAN_IND; 6274 case LE_LEGACY_NONCONN_IND: 6275 return LE_ADV_NONCONN_IND; 6276 case LE_LEGACY_SCAN_RSP_ADV: 6277 case LE_LEGACY_SCAN_RSP_ADV_SCAN: 6278 return LE_ADV_SCAN_RSP; 6279 } 6280 6281 goto invalid; 6282 } 6283 6284 if (evt_type & LE_EXT_ADV_CONN_IND) { 6285 if (evt_type & LE_EXT_ADV_DIRECT_IND) 6286 return LE_ADV_DIRECT_IND; 6287 6288 return LE_ADV_IND; 6289 } 6290 6291 if (evt_type & LE_EXT_ADV_SCAN_RSP) 6292 return LE_ADV_SCAN_RSP; 6293 6294 if (evt_type & LE_EXT_ADV_SCAN_IND) 6295 return LE_ADV_SCAN_IND; 6296 6297 if (evt_type == LE_EXT_ADV_NON_CONN_IND || 6298 evt_type & LE_EXT_ADV_DIRECT_IND) 6299 return LE_ADV_NONCONN_IND; 6300 6301 invalid: 6302 bt_dev_err_ratelimited(hdev, "Unknown advertising packet type: 0x%02x", 6303 evt_type); 6304 6305 return LE_ADV_INVALID; 6306 } 6307 6308 static void hci_le_ext_adv_report_evt(struct hci_dev *hdev, void *data, 6309 struct sk_buff *skb) 6310 { 6311 struct hci_ev_le_ext_adv_report *ev = data; 6312 u64 instant = jiffies; 6313 6314 if (!ev->num) 6315 return; 6316 6317 hci_dev_lock(hdev); 6318 6319 while (ev->num--) { 6320 struct hci_ev_le_ext_adv_info *info; 6321 u8 legacy_evt_type; 6322 u16 evt_type; 6323 6324 info = hci_le_ev_skb_pull(hdev, skb, HCI_EV_LE_EXT_ADV_REPORT, 6325 sizeof(*info)); 6326 if (!info) 6327 break; 6328 6329 if (!hci_le_ev_skb_pull(hdev, skb, HCI_EV_LE_EXT_ADV_REPORT, 6330 info->length)) 6331 break; 6332 6333 evt_type = __le16_to_cpu(info->type) & LE_EXT_ADV_EVT_TYPE_MASK; 6334 legacy_evt_type = ext_evt_type_to_legacy(hdev, evt_type); 6335 6336 if (test_bit(HCI_QUIRK_FIXUP_LE_EXT_ADV_REPORT_PHY, 6337 &hdev->quirks)) { 6338 info->primary_phy &= 0x1f; 6339 info->secondary_phy &= 0x1f; 6340 } 6341 6342 if (legacy_evt_type != LE_ADV_INVALID) { 6343 process_adv_report(hdev, legacy_evt_type, &info->bdaddr, 6344 info->bdaddr_type, NULL, 0, 6345 info->primary_phy, 6346 info->secondary_phy, 6347 info->rssi, info->data, info->length, 6348 !(evt_type & LE_EXT_ADV_LEGACY_PDU), 6349 false, instant); 6350 } 6351 } 6352 6353 hci_dev_unlock(hdev); 6354 } 6355 6356 static int hci_le_pa_term_sync(struct hci_dev *hdev, __le16 handle) 6357 { 6358 struct hci_cp_le_pa_term_sync cp; 6359 6360 memset(&cp, 0, sizeof(cp)); 6361 cp.handle = handle; 6362 6363 return hci_send_cmd(hdev, HCI_OP_LE_PA_TERM_SYNC, sizeof(cp), &cp); 6364 } 6365 6366 static void hci_le_pa_sync_estabilished_evt(struct hci_dev *hdev, void *data, 6367 struct sk_buff *skb) 6368 { 6369 struct hci_ev_le_pa_sync_established *ev = data; 6370 int mask = hdev->link_mode; 6371 __u8 flags = 0; 6372 struct hci_conn *pa_sync, *conn; 6373 6374 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 6375 6376 hci_dev_lock(hdev); 6377 6378 hci_dev_clear_flag(hdev, HCI_PA_SYNC); 6379 6380 conn = hci_conn_hash_lookup_sid(hdev, ev->sid, &ev->bdaddr, 6381 ev->bdaddr_type); 6382 if (!conn) { 6383 bt_dev_err(hdev, 6384 "Unable to find connection for dst %pMR sid 0x%2.2x", 6385 &ev->bdaddr, ev->sid); 6386 goto unlock; 6387 } 6388 6389 clear_bit(HCI_CONN_CREATE_PA_SYNC, &conn->flags); 6390 6391 conn->sync_handle = le16_to_cpu(ev->handle); 6392 conn->sid = HCI_SID_INVALID; 6393 6394 mask |= hci_proto_connect_ind(hdev, &ev->bdaddr, ISO_LINK, &flags); 6395 if (!(mask & HCI_LM_ACCEPT)) { 6396 hci_le_pa_term_sync(hdev, ev->handle); 6397 goto unlock; 6398 } 6399 6400 if (!(flags & HCI_PROTO_DEFER)) 6401 goto unlock; 6402 6403 /* Add connection to indicate PA sync event */ 6404 pa_sync = hci_conn_add_unset(hdev, ISO_LINK, BDADDR_ANY, 6405 HCI_ROLE_SLAVE); 6406 6407 if (IS_ERR(pa_sync)) 6408 goto unlock; 6409 6410 pa_sync->sync_handle = le16_to_cpu(ev->handle); 6411 6412 if (ev->status) { 6413 set_bit(HCI_CONN_PA_SYNC_FAILED, &pa_sync->flags); 6414 6415 /* Notify iso layer */ 6416 hci_connect_cfm(pa_sync, ev->status); 6417 } 6418 6419 unlock: 6420 /* Handle any other pending PA sync command */ 6421 hci_pa_create_sync_pending(hdev); 6422 6423 hci_dev_unlock(hdev); 6424 } 6425 6426 static void hci_le_per_adv_report_evt(struct hci_dev *hdev, void *data, 6427 struct sk_buff *skb) 6428 { 6429 struct hci_ev_le_per_adv_report *ev = data; 6430 int mask = hdev->link_mode; 6431 __u8 flags = 0; 6432 struct hci_conn *pa_sync; 6433 6434 bt_dev_dbg(hdev, "sync_handle 0x%4.4x", le16_to_cpu(ev->sync_handle)); 6435 6436 hci_dev_lock(hdev); 6437 6438 mask |= hci_proto_connect_ind(hdev, BDADDR_ANY, ISO_LINK, &flags); 6439 if (!(mask & HCI_LM_ACCEPT)) 6440 goto unlock; 6441 6442 if (!(flags & HCI_PROTO_DEFER)) 6443 goto unlock; 6444 6445 pa_sync = hci_conn_hash_lookup_pa_sync_handle 6446 (hdev, 6447 le16_to_cpu(ev->sync_handle)); 6448 6449 if (!pa_sync) 6450 goto unlock; 6451 6452 if (ev->data_status == LE_PA_DATA_COMPLETE && 6453 !test_and_set_bit(HCI_CONN_PA_SYNC, &pa_sync->flags)) { 6454 /* Notify iso layer */ 6455 hci_connect_cfm(pa_sync, 0); 6456 6457 /* Notify MGMT layer */ 6458 mgmt_device_connected(hdev, pa_sync, NULL, 0); 6459 } 6460 6461 unlock: 6462 hci_dev_unlock(hdev); 6463 } 6464 6465 static void hci_le_remote_feat_complete_evt(struct hci_dev *hdev, void *data, 6466 struct sk_buff *skb) 6467 { 6468 struct hci_ev_le_remote_feat_complete *ev = data; 6469 struct hci_conn *conn; 6470 6471 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 6472 6473 hci_dev_lock(hdev); 6474 6475 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle)); 6476 if (conn) { 6477 if (!ev->status) 6478 memcpy(conn->features[0], ev->features, 8); 6479 6480 if (conn->state == BT_CONFIG) { 6481 __u8 status; 6482 6483 /* If the local controller supports peripheral-initiated 6484 * features exchange, but the remote controller does 6485 * not, then it is possible that the error code 0x1a 6486 * for unsupported remote feature gets returned. 6487 * 6488 * In this specific case, allow the connection to 6489 * transition into connected state and mark it as 6490 * successful. 6491 */ 6492 if (!conn->out && ev->status == HCI_ERROR_UNSUPPORTED_REMOTE_FEATURE && 6493 (hdev->le_features[0] & HCI_LE_PERIPHERAL_FEATURES)) 6494 status = 0x00; 6495 else 6496 status = ev->status; 6497 6498 conn->state = BT_CONNECTED; 6499 hci_connect_cfm(conn, status); 6500 hci_conn_drop(conn); 6501 } 6502 } 6503 6504 hci_dev_unlock(hdev); 6505 } 6506 6507 static void hci_le_ltk_request_evt(struct hci_dev *hdev, void *data, 6508 struct sk_buff *skb) 6509 { 6510 struct hci_ev_le_ltk_req *ev = data; 6511 struct hci_cp_le_ltk_reply cp; 6512 struct hci_cp_le_ltk_neg_reply neg; 6513 struct hci_conn *conn; 6514 struct smp_ltk *ltk; 6515 6516 bt_dev_dbg(hdev, "handle 0x%4.4x", __le16_to_cpu(ev->handle)); 6517 6518 hci_dev_lock(hdev); 6519 6520 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle)); 6521 if (conn == NULL) 6522 goto not_found; 6523 6524 ltk = hci_find_ltk(hdev, &conn->dst, conn->dst_type, conn->role); 6525 if (!ltk) 6526 goto not_found; 6527 6528 if (smp_ltk_is_sc(ltk)) { 6529 /* With SC both EDiv and Rand are set to zero */ 6530 if (ev->ediv || ev->rand) 6531 goto not_found; 6532 } else { 6533 /* For non-SC keys check that EDiv and Rand match */ 6534 if (ev->ediv != ltk->ediv || ev->rand != ltk->rand) 6535 goto not_found; 6536 } 6537 6538 memcpy(cp.ltk, ltk->val, ltk->enc_size); 6539 memset(cp.ltk + ltk->enc_size, 0, sizeof(cp.ltk) - ltk->enc_size); 6540 cp.handle = cpu_to_le16(conn->handle); 6541 6542 conn->pending_sec_level = smp_ltk_sec_level(ltk); 6543 6544 conn->enc_key_size = ltk->enc_size; 6545 6546 hci_send_cmd(hdev, HCI_OP_LE_LTK_REPLY, sizeof(cp), &cp); 6547 6548 /* Ref. Bluetooth Core SPEC pages 1975 and 2004. STK is a 6549 * temporary key used to encrypt a connection following 6550 * pairing. It is used during the Encrypted Session Setup to 6551 * distribute the keys. Later, security can be re-established 6552 * using a distributed LTK. 6553 */ 6554 if (ltk->type == SMP_STK) { 6555 set_bit(HCI_CONN_STK_ENCRYPT, &conn->flags); 6556 list_del_rcu(<k->list); 6557 kfree_rcu(ltk, rcu); 6558 } else { 6559 clear_bit(HCI_CONN_STK_ENCRYPT, &conn->flags); 6560 } 6561 6562 hci_dev_unlock(hdev); 6563 6564 return; 6565 6566 not_found: 6567 neg.handle = ev->handle; 6568 hci_send_cmd(hdev, HCI_OP_LE_LTK_NEG_REPLY, sizeof(neg), &neg); 6569 hci_dev_unlock(hdev); 6570 } 6571 6572 static void send_conn_param_neg_reply(struct hci_dev *hdev, u16 handle, 6573 u8 reason) 6574 { 6575 struct hci_cp_le_conn_param_req_neg_reply cp; 6576 6577 cp.handle = cpu_to_le16(handle); 6578 cp.reason = reason; 6579 6580 hci_send_cmd(hdev, HCI_OP_LE_CONN_PARAM_REQ_NEG_REPLY, sizeof(cp), 6581 &cp); 6582 } 6583 6584 static void hci_le_remote_conn_param_req_evt(struct hci_dev *hdev, void *data, 6585 struct sk_buff *skb) 6586 { 6587 struct hci_ev_le_remote_conn_param_req *ev = data; 6588 struct hci_cp_le_conn_param_req_reply cp; 6589 struct hci_conn *hcon; 6590 u16 handle, min, max, latency, timeout; 6591 6592 bt_dev_dbg(hdev, "handle 0x%4.4x", __le16_to_cpu(ev->handle)); 6593 6594 handle = le16_to_cpu(ev->handle); 6595 min = le16_to_cpu(ev->interval_min); 6596 max = le16_to_cpu(ev->interval_max); 6597 latency = le16_to_cpu(ev->latency); 6598 timeout = le16_to_cpu(ev->timeout); 6599 6600 hcon = hci_conn_hash_lookup_handle(hdev, handle); 6601 if (!hcon || hcon->state != BT_CONNECTED) 6602 return send_conn_param_neg_reply(hdev, handle, 6603 HCI_ERROR_UNKNOWN_CONN_ID); 6604 6605 if (max > hcon->le_conn_max_interval) 6606 return send_conn_param_neg_reply(hdev, handle, 6607 HCI_ERROR_INVALID_LL_PARAMS); 6608 6609 if (hci_check_conn_params(min, max, latency, timeout)) 6610 return send_conn_param_neg_reply(hdev, handle, 6611 HCI_ERROR_INVALID_LL_PARAMS); 6612 6613 if (hcon->role == HCI_ROLE_MASTER) { 6614 struct hci_conn_params *params; 6615 u8 store_hint; 6616 6617 hci_dev_lock(hdev); 6618 6619 params = hci_conn_params_lookup(hdev, &hcon->dst, 6620 hcon->dst_type); 6621 if (params) { 6622 params->conn_min_interval = min; 6623 params->conn_max_interval = max; 6624 params->conn_latency = latency; 6625 params->supervision_timeout = timeout; 6626 store_hint = 0x01; 6627 } else { 6628 store_hint = 0x00; 6629 } 6630 6631 hci_dev_unlock(hdev); 6632 6633 mgmt_new_conn_param(hdev, &hcon->dst, hcon->dst_type, 6634 store_hint, min, max, latency, timeout); 6635 } 6636 6637 cp.handle = ev->handle; 6638 cp.interval_min = ev->interval_min; 6639 cp.interval_max = ev->interval_max; 6640 cp.latency = ev->latency; 6641 cp.timeout = ev->timeout; 6642 cp.min_ce_len = 0; 6643 cp.max_ce_len = 0; 6644 6645 hci_send_cmd(hdev, HCI_OP_LE_CONN_PARAM_REQ_REPLY, sizeof(cp), &cp); 6646 } 6647 6648 static void hci_le_direct_adv_report_evt(struct hci_dev *hdev, void *data, 6649 struct sk_buff *skb) 6650 { 6651 struct hci_ev_le_direct_adv_report *ev = data; 6652 u64 instant = jiffies; 6653 int i; 6654 6655 if (!hci_le_ev_skb_pull(hdev, skb, HCI_EV_LE_DIRECT_ADV_REPORT, 6656 flex_array_size(ev, info, ev->num))) 6657 return; 6658 6659 if (!ev->num) 6660 return; 6661 6662 hci_dev_lock(hdev); 6663 6664 for (i = 0; i < ev->num; i++) { 6665 struct hci_ev_le_direct_adv_info *info = &ev->info[i]; 6666 6667 process_adv_report(hdev, info->type, &info->bdaddr, 6668 info->bdaddr_type, &info->direct_addr, 6669 info->direct_addr_type, HCI_ADV_PHY_1M, 0, 6670 info->rssi, NULL, 0, false, false, instant); 6671 } 6672 6673 hci_dev_unlock(hdev); 6674 } 6675 6676 static void hci_le_phy_update_evt(struct hci_dev *hdev, void *data, 6677 struct sk_buff *skb) 6678 { 6679 struct hci_ev_le_phy_update_complete *ev = data; 6680 struct hci_conn *conn; 6681 6682 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 6683 6684 if (ev->status) 6685 return; 6686 6687 hci_dev_lock(hdev); 6688 6689 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle)); 6690 if (!conn) 6691 goto unlock; 6692 6693 conn->le_tx_phy = ev->tx_phy; 6694 conn->le_rx_phy = ev->rx_phy; 6695 6696 unlock: 6697 hci_dev_unlock(hdev); 6698 } 6699 6700 static void hci_le_cis_estabilished_evt(struct hci_dev *hdev, void *data, 6701 struct sk_buff *skb) 6702 { 6703 struct hci_evt_le_cis_established *ev = data; 6704 struct hci_conn *conn; 6705 struct bt_iso_qos *qos; 6706 bool pending = false; 6707 u16 handle = __le16_to_cpu(ev->handle); 6708 u32 c_sdu_interval, p_sdu_interval; 6709 6710 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 6711 6712 hci_dev_lock(hdev); 6713 6714 conn = hci_conn_hash_lookup_handle(hdev, handle); 6715 if (!conn) { 6716 bt_dev_err(hdev, 6717 "Unable to find connection with handle 0x%4.4x", 6718 handle); 6719 goto unlock; 6720 } 6721 6722 if (conn->type != ISO_LINK) { 6723 bt_dev_err(hdev, 6724 "Invalid connection link type handle 0x%4.4x", 6725 handle); 6726 goto unlock; 6727 } 6728 6729 qos = &conn->iso_qos; 6730 6731 pending = test_and_clear_bit(HCI_CONN_CREATE_CIS, &conn->flags); 6732 6733 /* BLUETOOTH CORE SPECIFICATION Version 5.4 | Vol 6, Part G 6734 * page 3075: 6735 * Transport_Latency_C_To_P = CIG_Sync_Delay + (FT_C_To_P) × 6736 * ISO_Interval + SDU_Interval_C_To_P 6737 * ... 6738 * SDU_Interval = (CIG_Sync_Delay + (FT) x ISO_Interval) - 6739 * Transport_Latency 6740 */ 6741 c_sdu_interval = (get_unaligned_le24(ev->cig_sync_delay) + 6742 (ev->c_ft * le16_to_cpu(ev->interval) * 1250)) - 6743 get_unaligned_le24(ev->c_latency); 6744 p_sdu_interval = (get_unaligned_le24(ev->cig_sync_delay) + 6745 (ev->p_ft * le16_to_cpu(ev->interval) * 1250)) - 6746 get_unaligned_le24(ev->p_latency); 6747 6748 switch (conn->role) { 6749 case HCI_ROLE_SLAVE: 6750 qos->ucast.in.interval = c_sdu_interval; 6751 qos->ucast.out.interval = p_sdu_interval; 6752 /* Convert Transport Latency (us) to Latency (msec) */ 6753 qos->ucast.in.latency = 6754 DIV_ROUND_CLOSEST(get_unaligned_le24(ev->c_latency), 6755 1000); 6756 qos->ucast.out.latency = 6757 DIV_ROUND_CLOSEST(get_unaligned_le24(ev->p_latency), 6758 1000); 6759 qos->ucast.in.sdu = le16_to_cpu(ev->c_mtu); 6760 qos->ucast.out.sdu = le16_to_cpu(ev->p_mtu); 6761 qos->ucast.in.phy = ev->c_phy; 6762 qos->ucast.out.phy = ev->p_phy; 6763 break; 6764 case HCI_ROLE_MASTER: 6765 qos->ucast.in.interval = p_sdu_interval; 6766 qos->ucast.out.interval = c_sdu_interval; 6767 /* Convert Transport Latency (us) to Latency (msec) */ 6768 qos->ucast.out.latency = 6769 DIV_ROUND_CLOSEST(get_unaligned_le24(ev->c_latency), 6770 1000); 6771 qos->ucast.in.latency = 6772 DIV_ROUND_CLOSEST(get_unaligned_le24(ev->p_latency), 6773 1000); 6774 qos->ucast.out.sdu = le16_to_cpu(ev->c_mtu); 6775 qos->ucast.in.sdu = le16_to_cpu(ev->p_mtu); 6776 qos->ucast.out.phy = ev->c_phy; 6777 qos->ucast.in.phy = ev->p_phy; 6778 break; 6779 } 6780 6781 if (!ev->status) { 6782 conn->state = BT_CONNECTED; 6783 hci_debugfs_create_conn(conn); 6784 hci_conn_add_sysfs(conn); 6785 hci_iso_setup_path(conn); 6786 goto unlock; 6787 } 6788 6789 conn->state = BT_CLOSED; 6790 hci_connect_cfm(conn, ev->status); 6791 hci_conn_del(conn); 6792 6793 unlock: 6794 if (pending) 6795 hci_le_create_cis_pending(hdev); 6796 6797 hci_dev_unlock(hdev); 6798 } 6799 6800 static void hci_le_reject_cis(struct hci_dev *hdev, __le16 handle) 6801 { 6802 struct hci_cp_le_reject_cis cp; 6803 6804 memset(&cp, 0, sizeof(cp)); 6805 cp.handle = handle; 6806 cp.reason = HCI_ERROR_REJ_BAD_ADDR; 6807 hci_send_cmd(hdev, HCI_OP_LE_REJECT_CIS, sizeof(cp), &cp); 6808 } 6809 6810 static void hci_le_accept_cis(struct hci_dev *hdev, __le16 handle) 6811 { 6812 struct hci_cp_le_accept_cis cp; 6813 6814 memset(&cp, 0, sizeof(cp)); 6815 cp.handle = handle; 6816 hci_send_cmd(hdev, HCI_OP_LE_ACCEPT_CIS, sizeof(cp), &cp); 6817 } 6818 6819 static void hci_le_cis_req_evt(struct hci_dev *hdev, void *data, 6820 struct sk_buff *skb) 6821 { 6822 struct hci_evt_le_cis_req *ev = data; 6823 u16 acl_handle, cis_handle; 6824 struct hci_conn *acl, *cis; 6825 int mask; 6826 __u8 flags = 0; 6827 6828 acl_handle = __le16_to_cpu(ev->acl_handle); 6829 cis_handle = __le16_to_cpu(ev->cis_handle); 6830 6831 bt_dev_dbg(hdev, "acl 0x%4.4x handle 0x%4.4x cig 0x%2.2x cis 0x%2.2x", 6832 acl_handle, cis_handle, ev->cig_id, ev->cis_id); 6833 6834 hci_dev_lock(hdev); 6835 6836 acl = hci_conn_hash_lookup_handle(hdev, acl_handle); 6837 if (!acl) 6838 goto unlock; 6839 6840 mask = hci_proto_connect_ind(hdev, &acl->dst, ISO_LINK, &flags); 6841 if (!(mask & HCI_LM_ACCEPT)) { 6842 hci_le_reject_cis(hdev, ev->cis_handle); 6843 goto unlock; 6844 } 6845 6846 cis = hci_conn_hash_lookup_handle(hdev, cis_handle); 6847 if (!cis) { 6848 cis = hci_conn_add(hdev, ISO_LINK, &acl->dst, HCI_ROLE_SLAVE, 6849 cis_handle); 6850 if (IS_ERR(cis)) { 6851 hci_le_reject_cis(hdev, ev->cis_handle); 6852 goto unlock; 6853 } 6854 } 6855 6856 cis->iso_qos.ucast.cig = ev->cig_id; 6857 cis->iso_qos.ucast.cis = ev->cis_id; 6858 6859 if (!(flags & HCI_PROTO_DEFER)) { 6860 hci_le_accept_cis(hdev, ev->cis_handle); 6861 } else { 6862 cis->state = BT_CONNECT2; 6863 hci_connect_cfm(cis, 0); 6864 } 6865 6866 unlock: 6867 hci_dev_unlock(hdev); 6868 } 6869 6870 static int hci_iso_term_big_sync(struct hci_dev *hdev, void *data) 6871 { 6872 u8 handle = PTR_UINT(data); 6873 6874 return hci_le_terminate_big_sync(hdev, handle, 6875 HCI_ERROR_LOCAL_HOST_TERM); 6876 } 6877 6878 static void hci_le_create_big_complete_evt(struct hci_dev *hdev, void *data, 6879 struct sk_buff *skb) 6880 { 6881 struct hci_evt_le_create_big_complete *ev = data; 6882 struct hci_conn *conn; 6883 __u8 i = 0; 6884 6885 BT_DBG("%s status 0x%2.2x", hdev->name, ev->status); 6886 6887 if (!hci_le_ev_skb_pull(hdev, skb, HCI_EVT_LE_CREATE_BIG_COMPLETE, 6888 flex_array_size(ev, bis_handle, ev->num_bis))) 6889 return; 6890 6891 hci_dev_lock(hdev); 6892 6893 /* Connect all BISes that are bound to the BIG */ 6894 while ((conn = hci_conn_hash_lookup_big_state(hdev, ev->handle, 6895 BT_BOUND))) { 6896 if (ev->status) { 6897 hci_connect_cfm(conn, ev->status); 6898 hci_conn_del(conn); 6899 continue; 6900 } 6901 6902 if (hci_conn_set_handle(conn, 6903 __le16_to_cpu(ev->bis_handle[i++]))) 6904 continue; 6905 6906 conn->state = BT_CONNECTED; 6907 set_bit(HCI_CONN_BIG_CREATED, &conn->flags); 6908 hci_debugfs_create_conn(conn); 6909 hci_conn_add_sysfs(conn); 6910 hci_iso_setup_path(conn); 6911 } 6912 6913 if (!ev->status && !i) 6914 /* If no BISes have been connected for the BIG, 6915 * terminate. This is in case all bound connections 6916 * have been closed before the BIG creation 6917 * has completed. 6918 */ 6919 hci_cmd_sync_queue(hdev, hci_iso_term_big_sync, 6920 UINT_PTR(ev->handle), NULL); 6921 6922 hci_dev_unlock(hdev); 6923 } 6924 6925 static void hci_le_big_sync_established_evt(struct hci_dev *hdev, void *data, 6926 struct sk_buff *skb) 6927 { 6928 struct hci_evt_le_big_sync_estabilished *ev = data; 6929 struct hci_conn *bis, *conn; 6930 int i; 6931 6932 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 6933 6934 if (!hci_le_ev_skb_pull(hdev, skb, HCI_EVT_LE_BIG_SYNC_ESTABILISHED, 6935 flex_array_size(ev, bis, ev->num_bis))) 6936 return; 6937 6938 hci_dev_lock(hdev); 6939 6940 conn = hci_conn_hash_lookup_big_sync_pend(hdev, ev->handle, 6941 ev->num_bis); 6942 if (!conn) { 6943 bt_dev_err(hdev, 6944 "Unable to find connection for big 0x%2.2x", 6945 ev->handle); 6946 goto unlock; 6947 } 6948 6949 clear_bit(HCI_CONN_CREATE_BIG_SYNC, &conn->flags); 6950 6951 conn->num_bis = 0; 6952 memset(conn->bis, 0, sizeof(conn->num_bis)); 6953 6954 for (i = 0; i < ev->num_bis; i++) { 6955 u16 handle = le16_to_cpu(ev->bis[i]); 6956 __le32 interval; 6957 6958 bis = hci_conn_hash_lookup_handle(hdev, handle); 6959 if (!bis) { 6960 if (handle > HCI_CONN_HANDLE_MAX) { 6961 bt_dev_dbg(hdev, "ignore too large handle %u", handle); 6962 continue; 6963 } 6964 bis = hci_conn_add(hdev, ISO_LINK, BDADDR_ANY, 6965 HCI_ROLE_SLAVE, handle); 6966 if (IS_ERR(bis)) 6967 continue; 6968 } 6969 6970 if (ev->status != 0x42) 6971 /* Mark PA sync as established */ 6972 set_bit(HCI_CONN_PA_SYNC, &bis->flags); 6973 6974 bis->sync_handle = conn->sync_handle; 6975 bis->iso_qos.bcast.big = ev->handle; 6976 memset(&interval, 0, sizeof(interval)); 6977 memcpy(&interval, ev->latency, sizeof(ev->latency)); 6978 bis->iso_qos.bcast.in.interval = le32_to_cpu(interval); 6979 /* Convert ISO Interval (1.25 ms slots) to latency (ms) */ 6980 bis->iso_qos.bcast.in.latency = le16_to_cpu(ev->interval) * 125 / 100; 6981 bis->iso_qos.bcast.in.sdu = le16_to_cpu(ev->max_pdu); 6982 6983 if (!ev->status) { 6984 set_bit(HCI_CONN_BIG_SYNC, &bis->flags); 6985 hci_iso_setup_path(bis); 6986 } 6987 } 6988 6989 /* In case BIG sync failed, notify each failed connection to 6990 * the user after all hci connections have been added 6991 */ 6992 if (ev->status) 6993 for (i = 0; i < ev->num_bis; i++) { 6994 u16 handle = le16_to_cpu(ev->bis[i]); 6995 6996 bis = hci_conn_hash_lookup_handle(hdev, handle); 6997 if (!bis) 6998 continue; 6999 7000 set_bit(HCI_CONN_BIG_SYNC_FAILED, &bis->flags); 7001 hci_connect_cfm(bis, ev->status); 7002 } 7003 7004 unlock: 7005 /* Handle any other pending BIG sync command */ 7006 hci_le_big_create_sync_pending(hdev); 7007 7008 hci_dev_unlock(hdev); 7009 } 7010 7011 static void hci_le_big_info_adv_report_evt(struct hci_dev *hdev, void *data, 7012 struct sk_buff *skb) 7013 { 7014 struct hci_evt_le_big_info_adv_report *ev = data; 7015 int mask = hdev->link_mode; 7016 __u8 flags = 0; 7017 struct hci_conn *pa_sync; 7018 7019 bt_dev_dbg(hdev, "sync_handle 0x%4.4x", le16_to_cpu(ev->sync_handle)); 7020 7021 hci_dev_lock(hdev); 7022 7023 mask |= hci_proto_connect_ind(hdev, BDADDR_ANY, ISO_LINK, &flags); 7024 if (!(mask & HCI_LM_ACCEPT)) 7025 goto unlock; 7026 7027 if (!(flags & HCI_PROTO_DEFER)) 7028 goto unlock; 7029 7030 pa_sync = hci_conn_hash_lookup_pa_sync_handle 7031 (hdev, 7032 le16_to_cpu(ev->sync_handle)); 7033 7034 if (!pa_sync) 7035 goto unlock; 7036 7037 pa_sync->iso_qos.bcast.encryption = ev->encryption; 7038 7039 /* Notify iso layer */ 7040 hci_connect_cfm(pa_sync, 0); 7041 7042 unlock: 7043 hci_dev_unlock(hdev); 7044 } 7045 7046 #define HCI_LE_EV_VL(_op, _func, _min_len, _max_len) \ 7047 [_op] = { \ 7048 .func = _func, \ 7049 .min_len = _min_len, \ 7050 .max_len = _max_len, \ 7051 } 7052 7053 #define HCI_LE_EV(_op, _func, _len) \ 7054 HCI_LE_EV_VL(_op, _func, _len, _len) 7055 7056 #define HCI_LE_EV_STATUS(_op, _func) \ 7057 HCI_LE_EV(_op, _func, sizeof(struct hci_ev_status)) 7058 7059 /* Entries in this table shall have their position according to the subevent 7060 * opcode they handle so the use of the macros above is recommend since it does 7061 * attempt to initialize at its proper index using Designated Initializers that 7062 * way events without a callback function can be ommited. 7063 */ 7064 static const struct hci_le_ev { 7065 void (*func)(struct hci_dev *hdev, void *data, struct sk_buff *skb); 7066 u16 min_len; 7067 u16 max_len; 7068 } hci_le_ev_table[U8_MAX + 1] = { 7069 /* [0x01 = HCI_EV_LE_CONN_COMPLETE] */ 7070 HCI_LE_EV(HCI_EV_LE_CONN_COMPLETE, hci_le_conn_complete_evt, 7071 sizeof(struct hci_ev_le_conn_complete)), 7072 /* [0x02 = HCI_EV_LE_ADVERTISING_REPORT] */ 7073 HCI_LE_EV_VL(HCI_EV_LE_ADVERTISING_REPORT, hci_le_adv_report_evt, 7074 sizeof(struct hci_ev_le_advertising_report), 7075 HCI_MAX_EVENT_SIZE), 7076 /* [0x03 = HCI_EV_LE_CONN_UPDATE_COMPLETE] */ 7077 HCI_LE_EV(HCI_EV_LE_CONN_UPDATE_COMPLETE, 7078 hci_le_conn_update_complete_evt, 7079 sizeof(struct hci_ev_le_conn_update_complete)), 7080 /* [0x04 = HCI_EV_LE_REMOTE_FEAT_COMPLETE] */ 7081 HCI_LE_EV(HCI_EV_LE_REMOTE_FEAT_COMPLETE, 7082 hci_le_remote_feat_complete_evt, 7083 sizeof(struct hci_ev_le_remote_feat_complete)), 7084 /* [0x05 = HCI_EV_LE_LTK_REQ] */ 7085 HCI_LE_EV(HCI_EV_LE_LTK_REQ, hci_le_ltk_request_evt, 7086 sizeof(struct hci_ev_le_ltk_req)), 7087 /* [0x06 = HCI_EV_LE_REMOTE_CONN_PARAM_REQ] */ 7088 HCI_LE_EV(HCI_EV_LE_REMOTE_CONN_PARAM_REQ, 7089 hci_le_remote_conn_param_req_evt, 7090 sizeof(struct hci_ev_le_remote_conn_param_req)), 7091 /* [0x0a = HCI_EV_LE_ENHANCED_CONN_COMPLETE] */ 7092 HCI_LE_EV(HCI_EV_LE_ENHANCED_CONN_COMPLETE, 7093 hci_le_enh_conn_complete_evt, 7094 sizeof(struct hci_ev_le_enh_conn_complete)), 7095 /* [0x0b = HCI_EV_LE_DIRECT_ADV_REPORT] */ 7096 HCI_LE_EV_VL(HCI_EV_LE_DIRECT_ADV_REPORT, hci_le_direct_adv_report_evt, 7097 sizeof(struct hci_ev_le_direct_adv_report), 7098 HCI_MAX_EVENT_SIZE), 7099 /* [0x0c = HCI_EV_LE_PHY_UPDATE_COMPLETE] */ 7100 HCI_LE_EV(HCI_EV_LE_PHY_UPDATE_COMPLETE, hci_le_phy_update_evt, 7101 sizeof(struct hci_ev_le_phy_update_complete)), 7102 /* [0x0d = HCI_EV_LE_EXT_ADV_REPORT] */ 7103 HCI_LE_EV_VL(HCI_EV_LE_EXT_ADV_REPORT, hci_le_ext_adv_report_evt, 7104 sizeof(struct hci_ev_le_ext_adv_report), 7105 HCI_MAX_EVENT_SIZE), 7106 /* [0x0e = HCI_EV_LE_PA_SYNC_ESTABLISHED] */ 7107 HCI_LE_EV(HCI_EV_LE_PA_SYNC_ESTABLISHED, 7108 hci_le_pa_sync_estabilished_evt, 7109 sizeof(struct hci_ev_le_pa_sync_established)), 7110 /* [0x0f = HCI_EV_LE_PER_ADV_REPORT] */ 7111 HCI_LE_EV_VL(HCI_EV_LE_PER_ADV_REPORT, 7112 hci_le_per_adv_report_evt, 7113 sizeof(struct hci_ev_le_per_adv_report), 7114 HCI_MAX_EVENT_SIZE), 7115 /* [0x12 = HCI_EV_LE_EXT_ADV_SET_TERM] */ 7116 HCI_LE_EV(HCI_EV_LE_EXT_ADV_SET_TERM, hci_le_ext_adv_term_evt, 7117 sizeof(struct hci_evt_le_ext_adv_set_term)), 7118 /* [0x19 = HCI_EVT_LE_CIS_ESTABLISHED] */ 7119 HCI_LE_EV(HCI_EVT_LE_CIS_ESTABLISHED, hci_le_cis_estabilished_evt, 7120 sizeof(struct hci_evt_le_cis_established)), 7121 /* [0x1a = HCI_EVT_LE_CIS_REQ] */ 7122 HCI_LE_EV(HCI_EVT_LE_CIS_REQ, hci_le_cis_req_evt, 7123 sizeof(struct hci_evt_le_cis_req)), 7124 /* [0x1b = HCI_EVT_LE_CREATE_BIG_COMPLETE] */ 7125 HCI_LE_EV_VL(HCI_EVT_LE_CREATE_BIG_COMPLETE, 7126 hci_le_create_big_complete_evt, 7127 sizeof(struct hci_evt_le_create_big_complete), 7128 HCI_MAX_EVENT_SIZE), 7129 /* [0x1d = HCI_EV_LE_BIG_SYNC_ESTABILISHED] */ 7130 HCI_LE_EV_VL(HCI_EVT_LE_BIG_SYNC_ESTABILISHED, 7131 hci_le_big_sync_established_evt, 7132 sizeof(struct hci_evt_le_big_sync_estabilished), 7133 HCI_MAX_EVENT_SIZE), 7134 /* [0x22 = HCI_EVT_LE_BIG_INFO_ADV_REPORT] */ 7135 HCI_LE_EV_VL(HCI_EVT_LE_BIG_INFO_ADV_REPORT, 7136 hci_le_big_info_adv_report_evt, 7137 sizeof(struct hci_evt_le_big_info_adv_report), 7138 HCI_MAX_EVENT_SIZE), 7139 }; 7140 7141 static void hci_le_meta_evt(struct hci_dev *hdev, void *data, 7142 struct sk_buff *skb, u16 *opcode, u8 *status, 7143 hci_req_complete_t *req_complete, 7144 hci_req_complete_skb_t *req_complete_skb) 7145 { 7146 struct hci_ev_le_meta *ev = data; 7147 const struct hci_le_ev *subev; 7148 7149 bt_dev_dbg(hdev, "subevent 0x%2.2x", ev->subevent); 7150 7151 /* Only match event if command OGF is for LE */ 7152 if (hdev->req_skb && 7153 hci_opcode_ogf(hci_skb_opcode(hdev->req_skb)) == 0x08 && 7154 hci_skb_event(hdev->req_skb) == ev->subevent) { 7155 *opcode = hci_skb_opcode(hdev->req_skb); 7156 hci_req_cmd_complete(hdev, *opcode, 0x00, req_complete, 7157 req_complete_skb); 7158 } 7159 7160 subev = &hci_le_ev_table[ev->subevent]; 7161 if (!subev->func) 7162 return; 7163 7164 if (skb->len < subev->min_len) { 7165 bt_dev_err(hdev, "unexpected subevent 0x%2.2x length: %u < %u", 7166 ev->subevent, skb->len, subev->min_len); 7167 return; 7168 } 7169 7170 /* Just warn if the length is over max_len size it still be 7171 * possible to partially parse the event so leave to callback to 7172 * decide if that is acceptable. 7173 */ 7174 if (skb->len > subev->max_len) 7175 bt_dev_warn(hdev, "unexpected subevent 0x%2.2x length: %u > %u", 7176 ev->subevent, skb->len, subev->max_len); 7177 data = hci_le_ev_skb_pull(hdev, skb, ev->subevent, subev->min_len); 7178 if (!data) 7179 return; 7180 7181 subev->func(hdev, data, skb); 7182 } 7183 7184 static bool hci_get_cmd_complete(struct hci_dev *hdev, u16 opcode, 7185 u8 event, struct sk_buff *skb) 7186 { 7187 struct hci_ev_cmd_complete *ev; 7188 struct hci_event_hdr *hdr; 7189 7190 if (!skb) 7191 return false; 7192 7193 hdr = hci_ev_skb_pull(hdev, skb, event, sizeof(*hdr)); 7194 if (!hdr) 7195 return false; 7196 7197 if (event) { 7198 if (hdr->evt != event) 7199 return false; 7200 return true; 7201 } 7202 7203 /* Check if request ended in Command Status - no way to retrieve 7204 * any extra parameters in this case. 7205 */ 7206 if (hdr->evt == HCI_EV_CMD_STATUS) 7207 return false; 7208 7209 if (hdr->evt != HCI_EV_CMD_COMPLETE) { 7210 bt_dev_err(hdev, "last event is not cmd complete (0x%2.2x)", 7211 hdr->evt); 7212 return false; 7213 } 7214 7215 ev = hci_cc_skb_pull(hdev, skb, opcode, sizeof(*ev)); 7216 if (!ev) 7217 return false; 7218 7219 if (opcode != __le16_to_cpu(ev->opcode)) { 7220 BT_DBG("opcode doesn't match (0x%2.2x != 0x%2.2x)", opcode, 7221 __le16_to_cpu(ev->opcode)); 7222 return false; 7223 } 7224 7225 return true; 7226 } 7227 7228 static void hci_store_wake_reason(struct hci_dev *hdev, u8 event, 7229 struct sk_buff *skb) 7230 { 7231 struct hci_ev_le_advertising_info *adv; 7232 struct hci_ev_le_direct_adv_info *direct_adv; 7233 struct hci_ev_le_ext_adv_info *ext_adv; 7234 const struct hci_ev_conn_complete *conn_complete = (void *)skb->data; 7235 const struct hci_ev_conn_request *conn_request = (void *)skb->data; 7236 7237 hci_dev_lock(hdev); 7238 7239 /* If we are currently suspended and this is the first BT event seen, 7240 * save the wake reason associated with the event. 7241 */ 7242 if (!hdev->suspended || hdev->wake_reason) 7243 goto unlock; 7244 7245 /* Default to remote wake. Values for wake_reason are documented in the 7246 * Bluez mgmt api docs. 7247 */ 7248 hdev->wake_reason = MGMT_WAKE_REASON_REMOTE_WAKE; 7249 7250 /* Once configured for remote wakeup, we should only wake up for 7251 * reconnections. It's useful to see which device is waking us up so 7252 * keep track of the bdaddr of the connection event that woke us up. 7253 */ 7254 if (event == HCI_EV_CONN_REQUEST) { 7255 bacpy(&hdev->wake_addr, &conn_request->bdaddr); 7256 hdev->wake_addr_type = BDADDR_BREDR; 7257 } else if (event == HCI_EV_CONN_COMPLETE) { 7258 bacpy(&hdev->wake_addr, &conn_complete->bdaddr); 7259 hdev->wake_addr_type = BDADDR_BREDR; 7260 } else if (event == HCI_EV_LE_META) { 7261 struct hci_ev_le_meta *le_ev = (void *)skb->data; 7262 u8 subevent = le_ev->subevent; 7263 u8 *ptr = &skb->data[sizeof(*le_ev)]; 7264 u8 num_reports = *ptr; 7265 7266 if ((subevent == HCI_EV_LE_ADVERTISING_REPORT || 7267 subevent == HCI_EV_LE_DIRECT_ADV_REPORT || 7268 subevent == HCI_EV_LE_EXT_ADV_REPORT) && 7269 num_reports) { 7270 adv = (void *)(ptr + 1); 7271 direct_adv = (void *)(ptr + 1); 7272 ext_adv = (void *)(ptr + 1); 7273 7274 switch (subevent) { 7275 case HCI_EV_LE_ADVERTISING_REPORT: 7276 bacpy(&hdev->wake_addr, &adv->bdaddr); 7277 hdev->wake_addr_type = adv->bdaddr_type; 7278 break; 7279 case HCI_EV_LE_DIRECT_ADV_REPORT: 7280 bacpy(&hdev->wake_addr, &direct_adv->bdaddr); 7281 hdev->wake_addr_type = direct_adv->bdaddr_type; 7282 break; 7283 case HCI_EV_LE_EXT_ADV_REPORT: 7284 bacpy(&hdev->wake_addr, &ext_adv->bdaddr); 7285 hdev->wake_addr_type = ext_adv->bdaddr_type; 7286 break; 7287 } 7288 } 7289 } else { 7290 hdev->wake_reason = MGMT_WAKE_REASON_UNEXPECTED; 7291 } 7292 7293 unlock: 7294 hci_dev_unlock(hdev); 7295 } 7296 7297 #define HCI_EV_VL(_op, _func, _min_len, _max_len) \ 7298 [_op] = { \ 7299 .req = false, \ 7300 .func = _func, \ 7301 .min_len = _min_len, \ 7302 .max_len = _max_len, \ 7303 } 7304 7305 #define HCI_EV(_op, _func, _len) \ 7306 HCI_EV_VL(_op, _func, _len, _len) 7307 7308 #define HCI_EV_STATUS(_op, _func) \ 7309 HCI_EV(_op, _func, sizeof(struct hci_ev_status)) 7310 7311 #define HCI_EV_REQ_VL(_op, _func, _min_len, _max_len) \ 7312 [_op] = { \ 7313 .req = true, \ 7314 .func_req = _func, \ 7315 .min_len = _min_len, \ 7316 .max_len = _max_len, \ 7317 } 7318 7319 #define HCI_EV_REQ(_op, _func, _len) \ 7320 HCI_EV_REQ_VL(_op, _func, _len, _len) 7321 7322 /* Entries in this table shall have their position according to the event opcode 7323 * they handle so the use of the macros above is recommend since it does attempt 7324 * to initialize at its proper index using Designated Initializers that way 7325 * events without a callback function don't have entered. 7326 */ 7327 static const struct hci_ev { 7328 bool req; 7329 union { 7330 void (*func)(struct hci_dev *hdev, void *data, 7331 struct sk_buff *skb); 7332 void (*func_req)(struct hci_dev *hdev, void *data, 7333 struct sk_buff *skb, u16 *opcode, u8 *status, 7334 hci_req_complete_t *req_complete, 7335 hci_req_complete_skb_t *req_complete_skb); 7336 }; 7337 u16 min_len; 7338 u16 max_len; 7339 } hci_ev_table[U8_MAX + 1] = { 7340 /* [0x01 = HCI_EV_INQUIRY_COMPLETE] */ 7341 HCI_EV_STATUS(HCI_EV_INQUIRY_COMPLETE, hci_inquiry_complete_evt), 7342 /* [0x02 = HCI_EV_INQUIRY_RESULT] */ 7343 HCI_EV_VL(HCI_EV_INQUIRY_RESULT, hci_inquiry_result_evt, 7344 sizeof(struct hci_ev_inquiry_result), HCI_MAX_EVENT_SIZE), 7345 /* [0x03 = HCI_EV_CONN_COMPLETE] */ 7346 HCI_EV(HCI_EV_CONN_COMPLETE, hci_conn_complete_evt, 7347 sizeof(struct hci_ev_conn_complete)), 7348 /* [0x04 = HCI_EV_CONN_REQUEST] */ 7349 HCI_EV(HCI_EV_CONN_REQUEST, hci_conn_request_evt, 7350 sizeof(struct hci_ev_conn_request)), 7351 /* [0x05 = HCI_EV_DISCONN_COMPLETE] */ 7352 HCI_EV(HCI_EV_DISCONN_COMPLETE, hci_disconn_complete_evt, 7353 sizeof(struct hci_ev_disconn_complete)), 7354 /* [0x06 = HCI_EV_AUTH_COMPLETE] */ 7355 HCI_EV(HCI_EV_AUTH_COMPLETE, hci_auth_complete_evt, 7356 sizeof(struct hci_ev_auth_complete)), 7357 /* [0x07 = HCI_EV_REMOTE_NAME] */ 7358 HCI_EV(HCI_EV_REMOTE_NAME, hci_remote_name_evt, 7359 sizeof(struct hci_ev_remote_name)), 7360 /* [0x08 = HCI_EV_ENCRYPT_CHANGE] */ 7361 HCI_EV(HCI_EV_ENCRYPT_CHANGE, hci_encrypt_change_evt, 7362 sizeof(struct hci_ev_encrypt_change)), 7363 /* [0x09 = HCI_EV_CHANGE_LINK_KEY_COMPLETE] */ 7364 HCI_EV(HCI_EV_CHANGE_LINK_KEY_COMPLETE, 7365 hci_change_link_key_complete_evt, 7366 sizeof(struct hci_ev_change_link_key_complete)), 7367 /* [0x0b = HCI_EV_REMOTE_FEATURES] */ 7368 HCI_EV(HCI_EV_REMOTE_FEATURES, hci_remote_features_evt, 7369 sizeof(struct hci_ev_remote_features)), 7370 /* [0x0e = HCI_EV_CMD_COMPLETE] */ 7371 HCI_EV_REQ_VL(HCI_EV_CMD_COMPLETE, hci_cmd_complete_evt, 7372 sizeof(struct hci_ev_cmd_complete), HCI_MAX_EVENT_SIZE), 7373 /* [0x0f = HCI_EV_CMD_STATUS] */ 7374 HCI_EV_REQ(HCI_EV_CMD_STATUS, hci_cmd_status_evt, 7375 sizeof(struct hci_ev_cmd_status)), 7376 /* [0x10 = HCI_EV_CMD_STATUS] */ 7377 HCI_EV(HCI_EV_HARDWARE_ERROR, hci_hardware_error_evt, 7378 sizeof(struct hci_ev_hardware_error)), 7379 /* [0x12 = HCI_EV_ROLE_CHANGE] */ 7380 HCI_EV(HCI_EV_ROLE_CHANGE, hci_role_change_evt, 7381 sizeof(struct hci_ev_role_change)), 7382 /* [0x13 = HCI_EV_NUM_COMP_PKTS] */ 7383 HCI_EV_VL(HCI_EV_NUM_COMP_PKTS, hci_num_comp_pkts_evt, 7384 sizeof(struct hci_ev_num_comp_pkts), HCI_MAX_EVENT_SIZE), 7385 /* [0x14 = HCI_EV_MODE_CHANGE] */ 7386 HCI_EV(HCI_EV_MODE_CHANGE, hci_mode_change_evt, 7387 sizeof(struct hci_ev_mode_change)), 7388 /* [0x16 = HCI_EV_PIN_CODE_REQ] */ 7389 HCI_EV(HCI_EV_PIN_CODE_REQ, hci_pin_code_request_evt, 7390 sizeof(struct hci_ev_pin_code_req)), 7391 /* [0x17 = HCI_EV_LINK_KEY_REQ] */ 7392 HCI_EV(HCI_EV_LINK_KEY_REQ, hci_link_key_request_evt, 7393 sizeof(struct hci_ev_link_key_req)), 7394 /* [0x18 = HCI_EV_LINK_KEY_NOTIFY] */ 7395 HCI_EV(HCI_EV_LINK_KEY_NOTIFY, hci_link_key_notify_evt, 7396 sizeof(struct hci_ev_link_key_notify)), 7397 /* [0x1c = HCI_EV_CLOCK_OFFSET] */ 7398 HCI_EV(HCI_EV_CLOCK_OFFSET, hci_clock_offset_evt, 7399 sizeof(struct hci_ev_clock_offset)), 7400 /* [0x1d = HCI_EV_PKT_TYPE_CHANGE] */ 7401 HCI_EV(HCI_EV_PKT_TYPE_CHANGE, hci_pkt_type_change_evt, 7402 sizeof(struct hci_ev_pkt_type_change)), 7403 /* [0x20 = HCI_EV_PSCAN_REP_MODE] */ 7404 HCI_EV(HCI_EV_PSCAN_REP_MODE, hci_pscan_rep_mode_evt, 7405 sizeof(struct hci_ev_pscan_rep_mode)), 7406 /* [0x22 = HCI_EV_INQUIRY_RESULT_WITH_RSSI] */ 7407 HCI_EV_VL(HCI_EV_INQUIRY_RESULT_WITH_RSSI, 7408 hci_inquiry_result_with_rssi_evt, 7409 sizeof(struct hci_ev_inquiry_result_rssi), 7410 HCI_MAX_EVENT_SIZE), 7411 /* [0x23 = HCI_EV_REMOTE_EXT_FEATURES] */ 7412 HCI_EV(HCI_EV_REMOTE_EXT_FEATURES, hci_remote_ext_features_evt, 7413 sizeof(struct hci_ev_remote_ext_features)), 7414 /* [0x2c = HCI_EV_SYNC_CONN_COMPLETE] */ 7415 HCI_EV(HCI_EV_SYNC_CONN_COMPLETE, hci_sync_conn_complete_evt, 7416 sizeof(struct hci_ev_sync_conn_complete)), 7417 /* [0x2d = HCI_EV_EXTENDED_INQUIRY_RESULT] */ 7418 HCI_EV_VL(HCI_EV_EXTENDED_INQUIRY_RESULT, 7419 hci_extended_inquiry_result_evt, 7420 sizeof(struct hci_ev_ext_inquiry_result), HCI_MAX_EVENT_SIZE), 7421 /* [0x30 = HCI_EV_KEY_REFRESH_COMPLETE] */ 7422 HCI_EV(HCI_EV_KEY_REFRESH_COMPLETE, hci_key_refresh_complete_evt, 7423 sizeof(struct hci_ev_key_refresh_complete)), 7424 /* [0x31 = HCI_EV_IO_CAPA_REQUEST] */ 7425 HCI_EV(HCI_EV_IO_CAPA_REQUEST, hci_io_capa_request_evt, 7426 sizeof(struct hci_ev_io_capa_request)), 7427 /* [0x32 = HCI_EV_IO_CAPA_REPLY] */ 7428 HCI_EV(HCI_EV_IO_CAPA_REPLY, hci_io_capa_reply_evt, 7429 sizeof(struct hci_ev_io_capa_reply)), 7430 /* [0x33 = HCI_EV_USER_CONFIRM_REQUEST] */ 7431 HCI_EV(HCI_EV_USER_CONFIRM_REQUEST, hci_user_confirm_request_evt, 7432 sizeof(struct hci_ev_user_confirm_req)), 7433 /* [0x34 = HCI_EV_USER_PASSKEY_REQUEST] */ 7434 HCI_EV(HCI_EV_USER_PASSKEY_REQUEST, hci_user_passkey_request_evt, 7435 sizeof(struct hci_ev_user_passkey_req)), 7436 /* [0x35 = HCI_EV_REMOTE_OOB_DATA_REQUEST] */ 7437 HCI_EV(HCI_EV_REMOTE_OOB_DATA_REQUEST, hci_remote_oob_data_request_evt, 7438 sizeof(struct hci_ev_remote_oob_data_request)), 7439 /* [0x36 = HCI_EV_SIMPLE_PAIR_COMPLETE] */ 7440 HCI_EV(HCI_EV_SIMPLE_PAIR_COMPLETE, hci_simple_pair_complete_evt, 7441 sizeof(struct hci_ev_simple_pair_complete)), 7442 /* [0x3b = HCI_EV_USER_PASSKEY_NOTIFY] */ 7443 HCI_EV(HCI_EV_USER_PASSKEY_NOTIFY, hci_user_passkey_notify_evt, 7444 sizeof(struct hci_ev_user_passkey_notify)), 7445 /* [0x3c = HCI_EV_KEYPRESS_NOTIFY] */ 7446 HCI_EV(HCI_EV_KEYPRESS_NOTIFY, hci_keypress_notify_evt, 7447 sizeof(struct hci_ev_keypress_notify)), 7448 /* [0x3d = HCI_EV_REMOTE_HOST_FEATURES] */ 7449 HCI_EV(HCI_EV_REMOTE_HOST_FEATURES, hci_remote_host_features_evt, 7450 sizeof(struct hci_ev_remote_host_features)), 7451 /* [0x3e = HCI_EV_LE_META] */ 7452 HCI_EV_REQ_VL(HCI_EV_LE_META, hci_le_meta_evt, 7453 sizeof(struct hci_ev_le_meta), HCI_MAX_EVENT_SIZE), 7454 /* [0xff = HCI_EV_VENDOR] */ 7455 HCI_EV_VL(HCI_EV_VENDOR, msft_vendor_evt, 0, HCI_MAX_EVENT_SIZE), 7456 }; 7457 7458 static void hci_event_func(struct hci_dev *hdev, u8 event, struct sk_buff *skb, 7459 u16 *opcode, u8 *status, 7460 hci_req_complete_t *req_complete, 7461 hci_req_complete_skb_t *req_complete_skb) 7462 { 7463 const struct hci_ev *ev = &hci_ev_table[event]; 7464 void *data; 7465 7466 if (!ev->func) 7467 return; 7468 7469 if (skb->len < ev->min_len) { 7470 bt_dev_err(hdev, "unexpected event 0x%2.2x length: %u < %u", 7471 event, skb->len, ev->min_len); 7472 return; 7473 } 7474 7475 /* Just warn if the length is over max_len size it still be 7476 * possible to partially parse the event so leave to callback to 7477 * decide if that is acceptable. 7478 */ 7479 if (skb->len > ev->max_len) 7480 bt_dev_warn_ratelimited(hdev, 7481 "unexpected event 0x%2.2x length: %u > %u", 7482 event, skb->len, ev->max_len); 7483 7484 data = hci_ev_skb_pull(hdev, skb, event, ev->min_len); 7485 if (!data) 7486 return; 7487 7488 if (ev->req) 7489 ev->func_req(hdev, data, skb, opcode, status, req_complete, 7490 req_complete_skb); 7491 else 7492 ev->func(hdev, data, skb); 7493 } 7494 7495 void hci_event_packet(struct hci_dev *hdev, struct sk_buff *skb) 7496 { 7497 struct hci_event_hdr *hdr = (void *) skb->data; 7498 hci_req_complete_t req_complete = NULL; 7499 hci_req_complete_skb_t req_complete_skb = NULL; 7500 struct sk_buff *orig_skb = NULL; 7501 u8 status = 0, event, req_evt = 0; 7502 u16 opcode = HCI_OP_NOP; 7503 7504 if (skb->len < sizeof(*hdr)) { 7505 bt_dev_err(hdev, "Malformed HCI Event"); 7506 goto done; 7507 } 7508 7509 kfree_skb(hdev->recv_event); 7510 hdev->recv_event = skb_clone(skb, GFP_KERNEL); 7511 7512 event = hdr->evt; 7513 if (!event) { 7514 bt_dev_warn(hdev, "Received unexpected HCI Event 0x%2.2x", 7515 event); 7516 goto done; 7517 } 7518 7519 /* Only match event if command OGF is not for LE */ 7520 if (hdev->req_skb && 7521 hci_opcode_ogf(hci_skb_opcode(hdev->req_skb)) != 0x08 && 7522 hci_skb_event(hdev->req_skb) == event) { 7523 hci_req_cmd_complete(hdev, hci_skb_opcode(hdev->req_skb), 7524 status, &req_complete, &req_complete_skb); 7525 req_evt = event; 7526 } 7527 7528 /* If it looks like we might end up having to call 7529 * req_complete_skb, store a pristine copy of the skb since the 7530 * various handlers may modify the original one through 7531 * skb_pull() calls, etc. 7532 */ 7533 if (req_complete_skb || event == HCI_EV_CMD_STATUS || 7534 event == HCI_EV_CMD_COMPLETE) 7535 orig_skb = skb_clone(skb, GFP_KERNEL); 7536 7537 skb_pull(skb, HCI_EVENT_HDR_SIZE); 7538 7539 /* Store wake reason if we're suspended */ 7540 hci_store_wake_reason(hdev, event, skb); 7541 7542 bt_dev_dbg(hdev, "event 0x%2.2x", event); 7543 7544 hci_event_func(hdev, event, skb, &opcode, &status, &req_complete, 7545 &req_complete_skb); 7546 7547 if (req_complete) { 7548 req_complete(hdev, status, opcode); 7549 } else if (req_complete_skb) { 7550 if (!hci_get_cmd_complete(hdev, opcode, req_evt, orig_skb)) { 7551 kfree_skb(orig_skb); 7552 orig_skb = NULL; 7553 } 7554 req_complete_skb(hdev, status, opcode, orig_skb); 7555 } 7556 7557 done: 7558 kfree_skb(orig_skb); 7559 kfree_skb(skb); 7560 hdev->stat.evt_rx++; 7561 } 7562